Search Results — 2000 specimen records retrieved (1635 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78034  Abies concolor Doris K. Kildale 1927-9-11 2794 Lassen 8-10 miles north of Susanville 1524 Comment
  CDA467  Abies concolor Mark Lubinski 1999-10-12 PDR# 070105 Lassen 1 mi. W of State Route 44 and 36 (intersection). Comment
  CHSC13792  Abies concolor Anne Linda Brisk 1969-7-2 33 Lassen Growing along the shore of Mohogany Lake. Comment
  RSA759629  Abies concolor Doug Goldman 2004-11-6 2940 Lassen Along the east side of Forest Road 32N08, about 2.6 miles east of the intersection with Route 44. Crater lake Mountain, Lassen National Forest. 1811 Comment
  JEPS94537  Acer glabrum var. torreyi Vernon Oswald and Lowell Ahart 1997-6-24 8607 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain, along Forest Road 29N43, 5.4 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1889 Comment
  SEINET7893918  Acer macrophyllum E. Brooks 1927-5-9 s.n. Lassen 80 miles N of Reno. Comment
  CAS-BOT-BC28647  Achillea millefolium John Thomas Howell 1976-7-19 51958 Lassen SW of Susanville on Gold Run Road 1341 Comment
  CHSC60271  Achillea millefolium P. V. Caldwell 1972-6-23 245 Lassen Headwaters of Willow Creek, Upper Murer's Meadow. Comment
  CHSC67055  Achillea millefolium Willis Ball 1969-6-20 19 Lassen Found in Dean's Meadow. 1950 Comment
  RSA129148  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen Near Johnstonville. 1280 Comment
  UC593529  Achnatherum hymenoides E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1745 Lassen e-facing slope of gully in mountain above Red Rock 1420 Comment
  CAS-BOT-BC110706  Achnatherum nelsonii subsp. dorei G. Schoolcraft 1994-7-7 2373 Lassen About 1 mile west of Boot Lake. 2346 Comment
  SBBG115546  Achnatherum nevadense B. Crampton 1960-6-18 5729 Lassen S Warner Mts, ca. 1.25 mi N of Blue Lake, in vicinity of Blue Lake Ranch 1981 Comment
  CAS-BOT-BC216451  Achnatherum occidentale subsp. californicum John Thomas Howell 1969-8-7 45884 Lassen Butte Lake, Lassen Park Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  UC506986  Achnatherum occidentale subsp. occidentale George A. Fischer and Irwin H. Johnson 1933-7-12 F- 218 Lassen Lassen Forest 1722 Comment
  CAS-BOT-BC218616  Achnatherum occidentale subsp. pubescens Margaret Williams; Steven Williams 1974-7-26 74 -L-37 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  UC1024910  Achnatherum occidentale subsp. pubescens Leo Whitney 3372 a Lassen ca. 13 mi w of upper end of Eagle Lake (Ashurt Mountain); Ashurt Mountain Comment
  UC1153871  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2066 Lassen 5.5 mi w, along State Hwy. 36 Susanville (volcanic rubble under pine) 1447 Comment
  UCD18960  Achnatherum occidentale subsp. pubescens Raymond D. Ratliff 1965-7-12 16 Lassen Lassen National Forest, Harvey Valley Allotment (HV-81-76 and 21-15). 1737 Comment
  UCD51194  Achnatherum occidentale subsp. pubescens L. Whitney 1935-6-24 s.n. Lassen Squaw Valley. Comment
  CAS-BOT-BC218007  Achnatherum thurberianum J. A. Jenkins 1937-7-15 2355 Lassen SW slope Big Valley Mountain along highway from McArthur to Bieber 1127 Comment
  UC584246  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2208 Lassen Inspiration Point just w of town Susanville 1280 Comment
  UC584332  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2226 Lassen 6 mi s Ravendale 1660 Comment
  UC579786  Achnatherum webberi David D. Keck and J. Clausen 1935-6-24 3749 Lassen 2 mi s, on borders of an alkali mud flat Ravendale 1465 Comment
  UCD51301  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Along US Hwy 395, 15 miles south of Ravendale. 1676 Comment
  CHSC113083  Acmispon denticulatus Lowell Ahart; John Dittes 2013-7-23 18888 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
  CHSC99296  Acmispon denticulatus Lowell Ahart; John Dittes 2008-6-20 14970 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC465624  Aconitum columbianum Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC412873  Aconogonon davisiae Lassen 1927 G. S. Crew 1927-6-25 31 Lassen Lassen National Forest. Norval Flat 1747 Comment
  CAS-BOT-BC391607  Actaea rubra John Thomas Howell; Gordon H. True 1973-8-1 50164 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  JEPS35591  Adonis aestivalis Wayne Savage 1964-7-1 339 Lassen 1/2 mi n of Willow Creek Guard Station (16 mi n of Susanville, on State Highway 139, 54 mi s of Adin); State Highway 139 1219 Comment
  UCD51460  Aegilops cylindrica Andy Babcock 1981-6-10 s.n. Lassen Comment
  CHSC12958  Agastache parvifolia K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5804 Lassen W side of Hwy. 139, ca. 7.7 mi n of Murrer Ranch turnoff, ca. 100 yds. s of Colley Point overlooking Eagle Lake. Comment
  CHSC12963  Agastache parvifolia L. B. Barlow 1967-6-30 51 Lassen West central shore of Eagle Lake, 1/2 mi. south of Pelican Point. 1554 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
  JEPS76087  Agastache parvifolia Gary Laver 1977-8-11 Lassen nw side Crater Mt. (Eagle Lake District); Lassen National Forest, , Eagle Lake District 1719 Comment
  JEPS85818  Agastache parvifolia Roy E. Buck 1989-10-5 1419 Lassen wnw-facing slope of ridge overlooking n end Eagle Lake (ca 1.8 air km sw of Fredonyer Paek summit, 28 air km n of Susanville); overlooking n end Eagle Lake, sw of Fredonyer Peak 2115 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
  POM147886  Agastache urticifolia J. B. Feudge 1927-7-20 1754 Lassen Westwood Comment
  CAS-BOT-BC30238  Ageratina occidentalis George Wilson Gillett 1957-7-26 904 Lassen Butte lake, point of rocks west of outlet and above trail 1844 Comment
  CAS-BOT-BC30239  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen West of Janesville Comment
  UC29344  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long Valley Comment
  UCR73167  Agoseris glauca G. L. Webster 1989-5-13 7704 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA0065401  Agoseris glauca M. P. Harthill 1971-6-21 223 Lassen Ravendale. Comment
  RSA715616  Agoseris glauca var. glauca L. Ahart 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1567420  Agoseris glauca var. glauca G. Schoolcraft 1989-6-6 1902 Lassen n end Secret Valley ((w of Hwy 395)) 1350 Comment
  CDA9936  Agoseris glauca var. laciniata T. C. Fuller 1963-6-11 10664 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CAS-BOT-BC15350  Agoseris heterophylla Doris Kildale Gillespie 1930-5-13 9370 Lassen Between Susanville and Janesville Comment
  JEPS118267  Agoseris heterophylla Lowell Ahart, John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS94999  Agoseris heterophylla Vernon Oswald and Lowell Ahart 1997-6-24 8601 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  RSA416397  Agoseris heterophylla Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CAS-BOT-BC127583  Agropyron cristatum John Thomas Howell 1974-7-8 50468 Lassen Sierra Nevada. Susanville. 1295 Comment
  UCR7835  Agropyron cristatum Marilyn Malin 1968-6-21 247 Lassen Brockman Flats Lava Bed,W side of Eagle Lake, site of 1956 Merrill burn 1600 Comment
  SEINET10789617  Agropyron cristatum John Thomas Howell 1961-9-25 Howell 36970 Lassen East side of Beckwourth Pass. Sierra Nevada. 1554 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
  UC1130648  Agrostis alba H. S. Yates 1936-8-11 6069 Lassen Baxter Creek Susanville Quadrangle Comment
  CAS-BOT-BC127237  Agrostis exarata John Thomas Howell; Gordon H. True 1973-7-31 50021 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1737 Comment
  CAS-BOT-BC127240  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50226 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  CHSC112795  Agrostis exarata Lowell Ahart; John Dittes 2013-7-22 18858 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC8791  Agrostis exarata D. E. Anderson 1963-8-25 2803 Lassen 3 mi. E of Cromberg 1372 Comment
Read comments
Apr 25 2013
  JEPS100322  Agrostis exarata Dean W. Taylor 2001-7-12 17829 Lassen Diamond Mountains, spring at mouth of canyon ca. 4 miles NW of Constantia, along Forest Road 25N02X 1341 Comment
  RSA0105582  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1142988  Agrostis exarata A. L. Hormay 1941-6-25 21 Lassen Burgess Spring Lassen Forest 1676 Comment
  UCD39949  Agrostis exarata A. H. Murphy 1953-6-24 HG 48 Lassen Lassen County?: Hog Lake, James pasture. 762 Comment
  UCD52115  Agrostis exarata R. Tofsrud 1947-7-1 240 Lassen Between Bieber and Nubieber. Comment
  CAS-BOT-BC139292  Agrostis idahoensis G. Schoolcraft 1994-8-1 2383 Lassen About 2 miles west of Boot Lake. 2255 Comment
  SEINET7594038 Image available Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen Lassen Volcanic National Park; Snag Lake. Margin of gravel bars 110 yards above lake near south shore. 1850 Comment
  UC1024658  Agrostis oregonensis Leo Whitney 1933-8-7 2194 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1024638  Agrostis pallens Leo Whitney 1934-7-10 2225 Lassen meadow near Harvey Spring (ca 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  CAS-BOT-BC138801  Agrostis scabra John Thomas Howell 1959-9-23 34882 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  UCD53279  Agrostis scabra August L. Hormay 1932-7-20 s.n. Lassen Lassen National Forest. Bogard Ranger Station. Comment
  POM98581  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  CHSC29881  Agrostis stolonifera Robin L. Ondricek 1978-8-2 112 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  JEPS28055  Agrostis thurberiana George W. Gillett 1957-7-28 925 -a Lassen upper end Butte Lake (trail to Widow Lake above junction with Snag Lake trail, 100 yds above trail junction); Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC138571  Agrostis variabilis John Thomas Howell; Gordon H. True 1973-8-1 50234 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. Headwaters of Baxter Creek. 2133 Comment
  UCD149882  Aliciella leptomeria Harry George 1967-6-14 s.n. Lassen Hartson Reservoir. 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
  UC978579  Alisma gramineum Verne Grant and Irving Schneider 1947-9-6 8382 Lassen creek midway between Eagle Lake and Susanville 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
  CAS-BOT-BC459568  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen 2 miles east of Fredonyer Summit on Highway #36, in the Arid Transition Life Zone. Comment
  CAS-BOT-BC459570  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen Along Skedaddle Ranch Road near stateline, Susanville 1584 Comment
  CHSC7663  Allium anceps Beverley J. Wise 1969-5-4 140 Lassen 23.4 mi. east of Susanville on Hwy 395. 1615 Comment
  NY247822  Allium bidwelliae R. M. Austin 06 1879 s.n. Lassen Pine Creek Meadows. Comment
  CHSC69845  Allium lemmonii D. W. McNeal 1983-6-5 2840 Lassen Beside Eagle Lake Rd. (Lassen Co. Hwy. A-1) ) 0.5 mi. n. of Hwy. #36. Comment
  UC1136928  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  UCD138558  Allium lemmonii A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3366 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  POM260464  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 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
  UC1133851  Allium parvum A. Simontacchi 1940-5-17 735 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC474045  Allium parvum Doris Kildale Gillespie 1930-5-13 9371 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC474075  Allium platycaule Clare B. Hardham 1971-7-22 s.n. Lassen Diamond Moutain 2346 Comment
  CAS-BOT-BC476624  Allium tolmiei E. K. Balls 1950-5-18 14 .767. Lassen Along Ash Creek, above Ash Creek Public camp, off rd. from Adin to Medeline. 1584 Comment
  JEPS107805  Alnus incana subsp. tenuifolia Lowell Ahart, John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  UC1586110  Alnus incana subsp. tenuifolia Barbara Ertter 1988-7-25 7868 Lassen ridge of mts. ca 1.5 mi due e Diamond Peak (n face, ca 10 air mi due s of Susanville); Diamond Mts. 2255 Comment
  RSA0011565  Alopecurus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46987 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  HSC22949  Alopecurus aequalis John Pratt 1970-6-21 35 Lassen 1707 Comment
  JEPS87183  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
  UCD55846  Alopecurus aequalis L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp #10. Comment
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  CAS-BOT-BC138162  Alopecurus aequalis var. aequalis John Thomas Howell 1975-7-23 51388 Lassen Sierra Nevada. Susanville. 1295 Comment
  RSA772750  Alopecurus aequalis var. aequalis R. F. Thorne, Larry E. DeBuhr 1975-8-22 47211 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  JEPS120874  Alopecurus carolinianus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18731 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
  CHSC54195  Alopecurus geniculatus Vernon H. Oswald 1991-5-28 4620 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 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
  CHSC116090  Amaranthus californicus Lowell Ahart; John Dittes 2015-7-13 20317 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS41027  Ambrosia acanthicarpa W. L. Jepson 1939-8-11 19380 Lassen Milford 1280 Comment
  RSA719708  Ambrosia acanthicarpa Michael A. Vincent, K. Levings 2006-7-29 12920 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  UCD112860  Amelanchier alnifolia Beecher Crampton 1954-5-11 1881 Lassen Beckwourth Pass, Plumas. 1588 Comment
  RSA38464  Amelanchier pallida Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  UC1137669  Amelanchier utahensis George A. Fischer and Irwin H. Johnson 1933-7-14 F 270 Lassen Lassen Forest 1737 Comment
  UCD169449  Amsinckia menziesii Lowell Ahart; John Dittes 2005-6-1 11899 Lassen Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction, east side of the railroad underpass, on the north side of Scott Road. 1459 Comment
  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
  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
  UCD119818  Amsinckia tessellata John Thomas Howell 1934-6-10 11842 Lassen Near Plumas Junction. Comment
  JEPS107401  Amsinckia tessellata var. tessellata Lowell Ahart, John Dittes 2005-6-1 11881 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1470 Comment
  UCD159579  Anaphalis margaritacea D. S. Park 2011-8-24 316 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  CAS-BOT-BC63954  Antennaria argentea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49454 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1125575  Antennaria argentea A. Simontacchi 1940-6-23 886 Lassen 3.2 mi sw Schoonamaker Lake; Halls Flat Quad. 1920 Comment
  UC773954  Antennaria argentea L. R. Short and Wm. Gansberg 1936-6-10 S- 414 Lassen Burgess Spr. Exp. Range 1856 Comment
  CAS-BOT-BC63952  Antennaria argentea H. D. Ripley; R. C. Barneby 1944-5-29 5958 Lassen Susanville Comment
  CHSC108021  Antennaria dimorpha Lowell Ahart; John Dittes 2011-6-20 17508 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
  CHSC71069  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1998-5-22 9088 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  HSC28309  Antennaria dimorpha D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19266 Lassen Harvey Valley near Cone Springs Comment
  UC180151  Antennaria dimorpha unknown 1892-6-24 Lassen Honey Lake Comment
  UC1951075  Antennaria dimorpha Debra Valov 2009-4-25 2009016 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC65087  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1995-7-24 7130 Lassen High Cascade Range. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  CHSC92677  Antennaria geyeri L. P. Janeway; B. Castro 2005-7-10 8478 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  JEPS100336  Antennaria geyeri Dean W. Taylor 2001-7-19 17842 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  CAS-BOT-BC58694  Antennaria luzuloides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16360 Lassen Near NE end of Eagle Lake Comment
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  JEPS96124  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1996-6-24 7857 Lassen ca. 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow ca. 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  POM39269  Antennaria luzuloides Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1125572  Antennaria luzuloides A. Simontacchi 1940-6-3 725 Lassen 8.3 mi se Alcohol Jacks Cabin; Halls Flat Quad. 1706 Comment
  UC585069  Antennaria luzuloides E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1791 Lassen about 2 mi n Madeline 1363 Comment
  CHSC92826  Antennaria luzuloides subsp. aberrans 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
  UC1609102  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  UC1123464  Apocynum androsaemifolium H. P. Hagge 1929-9-12 28 Lassen Logan Mt. Eagle Lake Quad., Logan Mt. Comment
  CAS-BOT-BC392013  Aquilegia Clare B. Hardham 1969-8-28 17453 I Lassen Slope west of Janesville Comment
  RSA122701  Aquilegia formosa L. R. Short 1936-6-26 72751 Lassen Burgess Spring, Exp Range. 1838 Comment
  CHSC4814  Aquilegia formosa var. truncata R. Carter 1967-7-29 573 Lassen Found in Murrer's meadow, W side where canal runs. 1584 Comment
  HSC18051  Aquilegia formosa var. truncata Fred J. Kindel 1955-7-9 Lassen Susan River Comment
  SEINET10480699  Arabis Mary Susan Taylor 1982-5-7 Taylor 4425 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
  SEINET10866232  Arabis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2601 Lassen Hallelujah jct intersection of u.s. 395 And state hwy 70; in open waste area adjacent to artemisia tridentata comm. 1433 Comment
  RSA0129285  Arabis holboellii var. pinetorum R. C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake. Comment
  SEINET5340852  Arabis sparsiflora var. subvillosa R. C. Rollins, K. W. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake. Comment
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  POM339728  Arctostaphylos manzanita subsp. manzanita F. R. Fosberg 1969-8-16 51425 Lassen (California Registered Historical Landmark 678) 10 mi. west of Susanville. Comment
  RSA46474  Arctostaphylos nevadensis Doris K. Kildale 1926-9-11 2764 Lassen Juniper Lake. 2055 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
  CAS-BOT-BC43783  Arctostaphylos stanfordiana T. S. Brandegee 1886-1-1 30 Lassen Barrow pit along county road S. of Mapes Ranch, Henry Lake Valley Comment
  SEINET10537551  Arenaria aculeata Mary Susan Taylor 1982-8-27 Taylor 5056 A Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  RSA768779  Arenaria congesta var. congesta L. Ahart, John Dittes 2010-7-31 17011 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
  NY342368  Arenaria congesta var. simulans A. A. Heller 1938-6-23 15198 Lassen East of Fredonyer Pass 1645.9 Comment
  CHSC52769  Argemone munita subsp. rotundata L. P. Janeway 1990-7-4 3770 Lassen Dry gravelly bench near east-side of saddle 0.8 mi NE of Meadowview Peak. 1981 Comment
  CHSC65290  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1995-8-14 7186 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  JEPS19757  Arnica chamissonis Rimo Bacigalupi with S. Galen Smith 1957-6-28 6005 Lassen 6.1 mi s of Madeline Comment
  UC1142923  Arnica chamissonis A. L. Hormay 1941-6-23 8 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 Comment
  UC73900  Arnica chamissonis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  UC91141  Arnica chamissonis unknown 1892-7-1 Lassen Susanville Comment
  UC29631  Arnica chamissonis M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  POM253188  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mile east of Fredonyer Pass on hwy 36 1707 Comment
  RSA32851  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen More or less shaped gravelly slope in the yellow pine forest 1 mile east of Fredonyer Pass, on State Hwy #36 1738 Comment
  UCD159572  Arnica cordifolia D. S. Park 2011-6-27 309 Lassen East of Westwood. Growing near Willard Creek. 1700 Comment
  CHSC5221  Arnica dealbata 1944-7-26 Lassen Juniper Lake. 2055 Comment
  JEPS21729  Arnica dealbata Franklin P. Nutting Lassen mts s Eagle Lake Eagle Lake Comment
  CHSC115054  Arnica fulgens J. Moeller; S. Puentes 2008-5-14 Lassen DFG OCC #13. Along 33N02 Harvey Valley Road off HW 44, ~5.8 air miles east of Poison Lake. 1735 Comment
  UCR7843  Arnica longifolia Marilyn Malin 1968-6-27 257 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 Comment
  CAS-BOT-BC85029  Arnica sororia Elmer I. Applegate 1897-6-3 866 Lassen Madeline Plains Comment
  JEPS109852  Arnica sororia Dean W. Taylor 2006-6-29 19559 Lassen Longs Cabin (ca. 12 air miles NE of Old Station) 1783 Comment
  CAS-BOT-BC85028  Arnica sororia Clarence Quick 1963-7-12 63 -37 Lassen Black Mountain Experimental Forest east of Halls Flat 1859 Comment
  UCD129182  Artemisia arbuscula A. A. Beetle 1957-8-16 12766 Lassen 15 miles south of Alturas. Comment
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Jul 11 2013
  UC1137582  Artemisia arbuscula subsp. arbuscula A. Simontacchi 1940-9-16 947 Lassen 1.3 mi ne of Ebey Lake; Lassen National Forest, Halls Flat Quadrangle 1691 Comment
  CHSC118471  Artemisia arbuscula subsp. thermopola Don Leply 2016-7-31 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile northeast of railroad crossing on Highway 44. 40N31:46.7 x 121W01:35.9. 1743 Comment
  SDSU6174  Artemisia cana subsp. bolanderi D. F. Howe 1966-8-25 4302 Lassen 41 miles south of Alturas on #395. 1676 Comment
  UC1479613  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 195 Lassen Painter Flat 1719 Comment
  CAS-BOT-BC84832  Artemisia cana subsp. cana G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  UC1567427  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen w of Susanville (along BJ Trail at Hobo Camp.) 1310 Comment
  CAS-BOT-BC90330  Artemisia douglasiana Clare B. Hardham 1971-8-22 18374 Lassen North slopes, Diamond Mountain 2133 Comment
  CHSC64749  Artemisia spinescens Vernon H. Oswald 1995-5-24 6772 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wen-del). 1219 Comment
  UCD149841  Artemisia spinescens William Anderson 1965-4-20 s.n. Lassen Wendel. Comment
  JEPS28804  Artemisia tridentata George W. Gillett 1957-9-4 1132 Lassen near Butte Lake (intersection of the Widow Lake-Snag Lake trails); Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC97326  Artemisia tridentata subsp. tridentata Clare B. Hardham 1971-8-22 18395 Lassen Diamond Mountain 2346 Comment
  JEPS37010  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7819 Lassen Madelin Plains 1615 Comment
  UC1136978  Artemisia tridentata subsp. tridentata George A. Fisher and Irwin H. Johnson 1933-9-8 F 282 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1706 Comment
  CHSC77188  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  JEPS123853  Asclepias fascicularis Lowell Ahart, John Dittes 2015-7-14 20325 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  RSA401104  Asclepias speciosa George Willet 1935-6-27 s.n. Lassen Susanville Comment
  SEINET199764  Asclepias speciosa George A. Fischer 1933-7-29 F- 276 Lassen Lassen National Forest; Stringer, in southwest corner of N.F. 1695 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
  UCR73170  Astragalus G. L. Webster 1989-5-13 7721 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  CAS-BOT-BC177324  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles N WW of Termo 1615 Comment
  JEPS107970  Astragalus andersonii Lowell Ahart, John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  NY791375  Astragalus andersonii W. W. Eggleston 1911-5-29 6730 Lassen Vicinity of Doyle Station 1290 Comment
  NY791377  Astragalus andersonii W. W. Eggleston 1911-7-8 7188 Lassen Vicinity of Doyle Station 1290 Comment
  UC84393  Astragalus andersonii T. Brandegee 1892-6-30 Lassen Janesville Comment
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Oct 22 2007
  SEINET5323085  Astragalus andersonii M. J. Williams, A. Tiehm 1978-5-14 78- 48 -2 Lassen 2.8 mi S of northern road into Red Rock (off Hwy 395). 1372 Comment
  CHSC63394  Astragalus anxius V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6351 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  HSC61704  Astragalus anxius Thomas W. Nelson, Jane P. Nelson 1980-7-6 5988 Lassen In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin. Comment
  NY790602  Astragalus argophyllus var. argophyllus A. Tiehm 1986-5-12 10347 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  NY790603  Astragalus argophyllus var. argophyllus A. Tiehm 1986-5-12 10347 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CAS-BOT-BC178764  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen Along north shore of Eagle Lake 1554 Comment
  CAS-BOT-BC178763  Astragalus canadensis var. brevidens John Thomas Howell 1977-8-11 52718 Lassen EAst of Beckwourth Pass, near Halleluja Junction - Sierra Nevada 1554 Comment
  UCD33606  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  RSA111041  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5676 Lassen N or Doyle. 1265 Comment
  SEINET948261  Astragalus curvicarpus Ira. L. Wiggins, Dorothy B. Wiggins 1961-1 16331 Lassen Gravelly slopes at margin of grain field 13.5 mi. E of Susanville, sec 36 Comment
  JEPS87396  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111,36N01) 1.9 mi n of Hwy 44 on the se edge Poison Lake; se edge Poison Lake 1709 Comment
  CAS-BOT-BC177842  Astragalus curvicarpus var. curvicarpus M. E. Jones 1897-6-24 s.n. Lassen 10 to 15 mi. w. of Amedee 1219 Comment
  RSA59356  Astragalus curvicarpus var. curvicarpus E. K. Balls 1950-5-21 14825 Lassen Near Standish, Hwy 395, 7 miles from jct of Hwy 36 and 395. 1250 Comment
  SEINET7103940  Astragalus curvicarpus var. curvicarpus D. W. McNeal 1983-6-5 2839 Lassen Hwy #395, 9.2 mi N of the Plumas Co. line.; 0 Comment
  CAS-BOT-BC182952  Astragalus filipes Lassen 1927 G. S. Crew 1927-7-15 74 Lassen Lassen National Forest 1725 Comment
  CAS-BOT-BC182959  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt rd paralelling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno 1524 Comment
  CAS-BOT-BC182960  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi. s of Constantia 1402 Comment
  CHSC37683  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  CHSC5279  Astragalus filipes L. Harman 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CAS-BOT-BC186865  Astragalus gibbsii E. K. Balls 1950-5-9 15949 Lassen 6 miles south of Doyle, Hwy 395 1371 Comment
  POM24783  Astragalus gibbsii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET3142990  Astragalus gibbsii E. K. Balls 1950-5-9 15949 Lassen 6 mi S of Doyle, Hwy 395 1372 Comment
  UC1332123  Astragalus gibbsii Alice Eastwood and John Thomas Howell 1940-6-16 8336 Lassen near Susanville Comment
  CDA26675  Astragalus gibbsii Taylor Jun 1938 Lassen Susanville. 0 Comment
  CAS-BOT-BC186911  Astragalus inversus Leo Whitney 1935-7-21 1931 Lassen Near Harvey Valley Spring, Lassen N.F. 1737 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  JEPS109851  Astragalus inversus Dean W. Taylor 2006-6-29 19560 Lassen Halls Flat; along County Road 111 3.6 miles N of Poison Station (siding)(ca. 12 air miles NE of Old Station) 1706 Comment
  RSA111019  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 5740 Lassen 3 miles west of Susanville. Comment
  UCD18950  Astragalus inversus Raymond D. Ratliff 1965-8-5 42 Lassen Lassen National Forest, Champ's Flat Allot. (CF 21-8). 1743 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
  RSA0006774  Astragalus iodanthus var. diaphanoides H. D. Ripley, R. C. Barneby 1943-1-15 5768 Lassen Snake Creek, 13 miles NE of Viewland [?]. 1402 Comment
  CAS-BOT-BC229045  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC229051  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC99730  Astragalus lemmonii Lowell Ahart; John Dittes 2008-6-20 14968 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC13384  Astragalus lemmonii M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  RSA0074201  Astragalus lemmonii L. T. Stephenson 1897-09 6448 Lassen Chat, Sierra Valley Comment
  SEINET10486607  Astragalus lentiginosus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3112 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 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
  CHSC7667  Astragalus lentiginosus var. platyphyllidius Beverley J. Wise 1969-5-4 56 Lassen 1.7 mi. west on Shaeffer Mtn Lookout Rd off Hwy 395 (approx. 1 mi. south of Las Co. Rd. 338). 1676 Comment
  RSA112071  Astragalus lentiginosus var. salinus H. D. Ripley, R. C. Barneby 1943-6-13 5678 Lassen N. of Doyle 1265 Comment
  CHSC64786  Astragalus malacus Vernon H. Oswald 1995-5-31 6814 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1341 Comment
  NY676224  Astragalus malacus B. M. Bartholomew 1993-5-13 6551 Lassen Just south of Ravendale 1580 Comment
  SEINET240400  Astragalus pulsiferae var. coronensis S. L. Welsh, ND Atwood 2001-6-14 28150 Lassen E of Hwy 395, road to Rams Horn Spring campground 1540 Comment
  NY694132  Astragalus pulsiferae var. pulsiferae M. J. Williams 1973-7-26 74-L- 16 Lassen 2 miles west of Highway 395, near Highway 70 1494 Comment
  RSA0006848  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass. 1494 Comment
  CAS-BOT-BC194090  Astragalus purshii var. purshii H. D. Ripley; R. C. Barneby 1943-6-14 5741 Lassen West of Susanville 1310 Comment
  RSA715542  Astragalus purshii var. purshii L. Ahart 2005-6-1 11870 Lassen About 1/2 miles west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70., 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  RSA0006859  Astragalus purshii var. purshii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1944-5-29 5957 Lassen Susanville Comment
  RSA110893  Astragalus purshii var. purshii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5741 Lassen West of Susanville. 1311 Comment
  CAS-BOT-BC192972  Astragalus purshii var. tinctus John Thomas Howell 1934-6-10 11862 Lassen Honey Lake Valley 37 miles s. of Susanville Comment
  UC604677  Astragalus purshii var. tinctus Farris Farris 1935-5-20 Lassen three mi sw Susanville; sw of Susanville 1310 Comment
  UC773896  Astragalus purshii var. tinctus L. R. Short and J. Warren 1936-6-11 S- 402 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range (Lassen National Forest) 1789 Comment
  UC82576  Astragalus spaldingii unknown 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC200873  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CAS-BOT-BC200874  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CAS-BOT-BC199137  Astragalus whitneyi var. siskiyouensis Clare B. Hardham 1971-8-22 18366 Lassen Diamond Mountain 2346 Comment
  CHSC5284  Astragalus whitneyi var. siskiyouensis V. Holt 1945-6-1 Lassen Eagle Lake. Comment
  CAS-BOT-BC198724  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  UC1730231  Astragalus whitneyi var. whitneyi L. P. Janeway 1998-7-8 5722 Lassen ridgetop saddle 2.4 mi NW of Red Rock (along road 213, 0.1 mi E of jct of Roads 28N08, 29N10, 213, and 28N55); ; Ridgetop saddle about 2.4 mi northwest of Red Rock; along Road 213, 0.1 mi east of the junction of Roads 28N08, 29N10, 213, and 28N55. 1988 Comment
  CAS-BOT-BC17410  Athysanus pusillus Doris Kildale Gillespie 1930-5-12 9342 Lassen 2 miles north of Susanville on road to Alturas. Comment
  NY652203  Atriplex argentea var. hillmanii G. Schoolcraft 1989-5-16 1874 Lassen West of Highway 395 about 2 miles south of Karlo turnoff 1356.4 Comment
  JEPS120466  Atriplex canescens var. canescens L. P. Janeway, B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. Comment
  CHSC110306  Atriplex confertifolia L. P. Janeway; B. Castro 2012-7-2 10924 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  UC1136349  Atriplex truncata E. Sawyer 1935-6-27 217 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CAS-BOT-BC106492  Balsamorhiza hookeri Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville State Hwy #36 Comment
  SEINET10859166  Balsamorhiza hookeri David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17769 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  CHSC5234  Barbarea orthoceras A. Santos 1946-6-12 Lassen Eagle Lake. Pine Creek. 1584 Comment
  CHSC68741  Barbarea orthoceras Vernon H. Oswald; Lowell Ahart 1997-5-27 8501 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi easat of Hwy. 139. On the flood plain of a creek paralleling the road. 1546 Comment
  CHSC63703  Bassia hyssopifolia Vernon H. Oswald 1994-9-6 6469 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. Common in the parking lot and along the levee road on the N side of the creek. 1490 Comment
  UC1191423  Bassia hyssopifolia Verne Grant and Irving Schneider 1947-9-6 8390 Lassen near Wendel (irrigation ditch w of Fleming Ranch Headquarters) 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
  CAS-BOT-BC145784  Beckmannia syzigachne Peter H. Raven; Otto T. Solbrig 1958-6-17 13262 Lassen United States Highway 395, 2.1 miles northeast of Standish. Comment
  CHSC112801  Beckmannia syzigachne Lowell Ahart; John Dittes 2013-7-22 18843 Lassen West margin of a duck field, about 40 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 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
  RSA129087  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 miles E.S.E. of Susanville 1280 Comment
  SD52270  Beckmannia syzigachne F. Stephens 1894-8-11 11766 Lassen Comment
  CDA20547  Berteroa incana D. McDonald 2005-7-18 PDR 1307852 Lassen Modoc Plateau; Hallelujah Junction. 1478 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
  UC1191930  Berula erecta Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 a Lassen 1 mi s of Doyle (Long Creek); Long Creek Comment
  HSC95266  Bidens cernua Gordon Leppig 1998-8-17 1047 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC34602  Bistorta bistortoides N. E. Heiken 1978-7-16 72 Lassen Colman L., several mi S of Eagle L. 1962 Comment
  SBBG29153  Bistorta bistortoides A. A. Heller 1938-6-23 15141 Lassen 2 mi E of Westwood Comment
  CAS-BOT-BC127954  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC128015  Blepharipappus scaber Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee 1219 Comment
  CAS-BOT-BC128044  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CDA18268  Blepharipappus scaber G. D. Barbe 1974-8-2 1932 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CHSC4444  Blepharipappus scaber K. R. Stern 1967-7-1 2444 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  JEPS114752  Blepharipappus scaber Lowell Ahart, John Dittes 2008-6-19 14876 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  POM223583  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3733 Lassen 2 miles south of Ravendale. 1463 Comment
  RSA713115  Blepharipappus scaber L. P. Janeway 2005-7-4 8462 Lassen Ridge top north above Long Valley; 0.4 km west of Road 34N41. High Cascade Range 1752 Comment
  CAS-BOT-BC127953  Blepharipappus scaber B. J. Hammerly 1941-6-20 s.n. Lassen On dry plateau of lava boulders 8 mi S.-E. of Likely on Blue Lake 1676 Comment
  HSC42530  Blepharipappus scaber Barbara Kelly 1977-8-9 566 Lassen 14.3 mi. E of Madeline on the dirt road from Adin Comment
  RSA637596  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land, Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), S of BLM road 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  SEINET10912069  Blepharipappus scaber David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17767 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  UC1537354  Blepharipappus scaber Gordon H. True Jr. 1937-7-10 790 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1493 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
  CHSC60335  Boechera pinetorum Mary Ann Showers 1992-6-13 2542 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  CHSC25300  Boechera puberula Pauleen Broyles 1977-5-30 143 Lassen Spencer's Basin ca 8 km n of Herlong. 1770 Comment
  CAS-BOT-BC14712  Boechera repanda John Thomas Howell; Gordon H. True 1973-8-1 50218 Lassen Sierra Nevada. Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2164 Comment
  CHSC40526  Boechera retrofracta J. D. Jokerst 1983-5-30 1796 Lassen West of Ash Valley, along the road that leads to Know Mt. ca 1.0 mile north of the road to either Aden or Madeline. Comment
  RSA0090999  Boechera retrofracta Dean Wm. Taylor 2009-5-21 20602 Lassen Susanville; Susanville Peak, easterly flank along logging road trending northward from Susanville Indian Rancheria. 1600 Comment
  CAS-BOT-BC25507  Boechera retrofracta Doris Kildale Gillespie 1930-5-14 9383 Lassen 5 miles west of Susanville. Comment
  CHSC29913  Boechera sparsiflora Robin L. Ondricek 1978-5-25 27 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  CHSC68746  Boechera sparsiflora Vernon H. Oswald; Lowell Ahart 1997-5-27 8512 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 1.4 mi east of Hwy. 139. Roadside. 1645 Comment
  UC1126562  Boechera sparsiflora H. P. Hagge 1929-9-19 40 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  UC1561877  Boechera subpinnatifida Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen Skeedaddle Mountains on NE side of Honey Lake, E of road over saddle on W side of range. 1645 Comment
  UC2046019  Bolboschoenus maritimus subsp. paludosus Nick Otting, Carex Working Group 2003-7-19 708 Lassen Modoc Plateau, Biscar Reservoir, 19 air miles northeast of Susanville. Comment
  HSC82193  Brodiaea coronaria subsp. coronaria Thomas W. Nelson, Jane P. Nelson 1980-7-6 6047 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC149497  Bromus briziformis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Few miles north of Leitchfield in lava country. Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
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Jun 19 2008
  UCD57488  Bromus briziformis Lauramay T. Dempster 1961-6-17 1675 Lassen About 8 miles north of Karlo Road junction with Hwy. 395. 1584 Comment
  RSA0065493  Bromus briziformis Marion P. Harthill 1971-6-21 203 Lassen Susanville. Comment
  SEINET4345029  Bromus briziformis J. A. Young 1982-6-7 s.n. Lassen N.E. Lassen Co. 1676 Comment
  UCD32659  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD59099  Bromus carinatus var. marginatus R. Tofsrud 1947-7-1 224 Lassen Between Ravendale and Thermo. Comment
  UCD58445  Bromus commutatus R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. Comment
  UCD58457  Bromus commutatus A. A. Beetle 1941-6-28 2810 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  UCD58467  Bromus commutatus Beecher Crampton 1954-7-5 2056 Lassen Along Hwy. 36. 4.5 miles west of Susanville. Comment
  UCR119122  Bromus hordeaceus Beecher Crampton 1954-7-5 2067 Lassen Modoc Plateau, 5 miles west of Susanville. 1448 Comment
  CHSC92831  Bromus japonicus Lowell Ahart; John Dittes 2005-6-1 11865 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  SEINET11261383  Bromus japonicus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3923 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  SEINET10717734  Bromus japonicus Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9750 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  RSA126867  Bromus marginatus G. A. Fischer, I. H. Johnson 1933-7-12 F 231 Lassen Patterson Flat. Lassen Forest. Comment
  CAS-BOT-BC162182  Bromus orcuttianus John Thomas Howell; Gordon H. True 1973-8-1 50180 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  UC1024917  Bromus racemosus Leo Whitney 1935-6-28 3361 a Lassen Bieber 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
  CAS-BOT-BC161419  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49199 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  CHSC12421  Bromus tectorum Anne Linda Brisk 1969-6-19 4 Lassen 1/4 mi NE of ELBS. 1554 Comment
  RSA152589  Bromus tectorum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16341 Lassen 13.5 mi. E. of Susanville Comment
  UC1024960  Bromus tectorum Leo Whitney 1935-6-24 3301 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  SEINET10515052  Bromus tectorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 522 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET10515057  Bromus tectorum Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3117 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UC1924233  Calamagrostis stricta Debra Valov 2004-6-9 2004263 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC80346  Calocedrus decurrens John Thomas Howell 1976-7-19 51964 Lassen on Gold Run Creek southwest of Susanville 1386 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
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  CAS-BOT-BC487967  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen In the valley east of Fredonyer Pass, Comment
  UC1537211  Calochortus macrocarpus Gordon H. True Jr. 1936-6-26 542 Lassen near Litchfield (w slope of Rice Canyon); Rice Canyon 1463 Comment
  UC3429  Calochortus macrocarpus Milo S. Baker 1894-7-21 Lassen Eagle Lake 1524 Comment
  HSC22969  Calochortus macrocarpus var. macrocarpus John Pratt 1970-6-4 62 Lassen Susanville Comment
  UC851940  Calyptridium monospermum C. L. Hitchcock 1940-5-26 6608 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  CHSC30571  Calyptridium umbellatum Sori H Shad 1970-6-25 32 Lassen Found E. 2 mile past Murrer's Meadow on N. side of road in rocky soil. 1524 Comment
  CHSC6233  Calyptridium umbellatum L. Harman 1946-6-23 Lassen Roop mountain. 2133 Comment
  CHSC80256  Calyptridium umbellatum Jeanne Boze 1981-6-13 111 Lassen On roadbed and northeast slope of Gallatin Peak. 1950 Comment
  UC72577  Calyptridium umbellatum Milo S. Baker 1890-1 Lassen Milford Comment
  SEINET188321  Calyptridium umbellatum C. L. Hitchcock 1940-5-26 6608 Lassen Ca 12 mi N of Fall River Mills (Shasta Co) on Fall River 1372 Comment
  SEINET10533674  Camassia leichtlinii subsp. suksdorfii Katherine L. Morris 1973-5-25 Morris 251 Lassen 27.7 mils nw of the jct. Of hwy. 36 And 44 on hwy. 44, At robber's spring, in An open meadow on one side of the hyw wirh yellow pine, white fir and open on The other side Comment
  UC1134560  Camassia quamash subsp. breviflora A. Simontacchi 1940-5-17 736 Lassen 5.9 mi s of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 Comment
  CAS-BOT-BC497553  Camassia quamash subsp. breviflora L. Beane; A. M. Vollmer 1953-7-1 92 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC497554  Camassia quamash subsp. breviflora Doris Kildale Gillespie 1930-5-13 9390 Lassen Between Susanville and Janesville Comment
  CHSC64770  Camelina microcarpa Vernon H. Oswald 1995-5-31 6807 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  SBBG70392  Camelina sativa subsp. sativa H. and M. Dearing 1939-6-6 3564 Lassen Bieber Comment
  CHSC4969  Camissonia R. Carter 1967-6-23 540 Lassen Along rd to Murrer's Meadow. 1584 Comment
  NY850967  Camissonia boothii subsp. alyssoides A. Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  NY850970  Camissonia boothii subsp. alyssoides P. A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  POM253278  Camissonia claviformis subsp. cruciformis A. A. Heller 1938-6-23 s.n. Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  JEPS89992  Camissonia contorta Dean Wm. Taylor with Robert A. Price 1988-6-4 9768 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. Watershed 1036 Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  RSA17675  Camissonia parvula Elmer I. Applegate 1934-5-4 8930 Lassen Secret Valley Comment
  RSA271914  Camissonia pubens Christopher Davidson 1975-6-7 2758 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA113688  Camissonia tanacetifolia H. K. Sharsmith 1955-6-27 4511 -B Lassen Adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1220 Comment
  JEPS121275  Camissonia tanacetifolia subsp. tanacetifolia Lowell Ahart, John Dittes 2013-7-22 18885 Lassen Man-made pond, about 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  POM204165  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell 1934-7-8 12505 Lassen Spalding s, Eagle Lake. 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
  CAS-BOT-BC160874  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  JEPS94549  Cardamine breweri Vernon Oswald and Lowell Ahart 1997-6-24 8618 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43, 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 Comment
  NY119877  Cardamine breweri R. C. Rollins 1981-5-30 81168 Lassen Gold Run Road, toward Ski Line Drive, 10 miles S of Susanville Comment
  UC10331  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  CAS-BOT-BC37252  Cardamine breweri Louella Bass 1980-5-22 s.n. Lassen Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville. Comment
  RSA74138  Cardamine pulcherrima Milo S. Baker 1952-5-23 12430 Lassen Hwy. 36, 1/2 mi West of Fredonyer Pass 1753 Comment
  SEINET515879  Cardaria pubescens Vernon H. Oswald 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi N of Bieber on County road 91 (Bieber-Lookout Rd.). 1259 Comment
  CAS-BOT-BC18287  Carex John Thomas Howell; Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road, south of Susanville. 1584 Comment
  CHSC112417  Carex Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18770 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD163081  Carex Jack Major 1966-6-24 Lassen Modoc National Forest. Long Valley. 3 airline miles southwest of Patterson Guard Station. (Exact location unknown. Coordinates estimated by label maker.) 1981 Comment
  CAS-BOT-BC18447  Carex abrupta George Wilson Gillett 1957-7-21 867 Lassen Lassen Volcanic National Park. Swale below (north of) summit of trail between Juniper Lake and Cameron Meadow. 2118 Comment
  CHSC89753  Carex abrupta L. P. Janeway 2004-6-26 8170 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. Roadside ditch. 1790 Comment
  UC142947  Carex angustata A. L. Hormay 1941-6-18 5 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 Comment
  CAS-BOT-BC18104  Carex athrostachya John Thomas Howell 1973-7-10 49780 Lassen Sierra Nevada. Fredonyer Pass. 1737 Comment
  CAS-BOT-BC18107  Carex athrostachya James Stokes 1939-6-15 s.n. Lassen Bullard Lake west of Grasshopper Valley. Comment
  UC506936  Carex athrostachya George A. Fischer, Irwin H. Johnson 1933-7-12 F 237 Lassen Patterson flat 1737 Comment
  CDA33021  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen Adjacent to boat ramp, campground on the east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. 0 Comment
  CDA33034  Carex barbarae T. C. Fuller 1963-7-15 10892 Lassen South of road to Pittsville, 5.4 miles northwest of Little Valley. 0 Comment
  CHSC96431  Carex cusickii Gordon Leppig; J. Cromwell 1997-7-27 620 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC19779  Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvery Valley. Comment
  JEPS94477  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8502 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling road); Forest Route 38N04 1546 Comment
  JEPS94486  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8519 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38MN04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir, Forest Route 38MN04 1682 Comment
  RSA122792  Carex douglasii G. A. Fischer, I. H. Johnson 1933-7-12 F- 234 Lassen Patterson Flat. 1738 Comment
  RSA298354  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen About 2 miles north of Westwood. Comment
  UC1924590  Carex douglasii Debra Valov 2006-5-28 2006020 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UC773860  Carex douglasii L. R. Short and Wm. Gansberg June 1936 S- 419 Lassen Burgess Spring Experiment Range 1856 Comment
  SEINET10823343  Carex douglasii Gordon H. True 1939-6-15 True 996 Lassen Bullard Lake west of Grasshopper Valley. Comment
  CHSC108015  Carex filifolia var. erostrata Lowell Ahart; John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  SEINET7558599 Image available Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  UCD140321  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Harvey Valley, 6 miles north Bogard Ranger Station, Lassen National Forest. 1676 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
  SEINET7587561 Image available Carex heteroneura George W. Gillett 1957-7-28 937 Lassen Lassen Volcanic National Park, Widow Lake. 2073 Comment
  SEINET7561698 Image available Carex hoodii George W. Gillet 1957-7-29 946 Lassen Lassen Volcanic National Park, along trail between Snag Lake and Butte Lake. 1859 Comment
  CHSC25908  Carex nebrascensis K. R. Stern 1967-4-24 2409 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  POM81950  Carex nebrascensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC66413  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-17 7809 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  SEINET7570967 Image available Carex pellita George W. Gillett 1957-7-26 906 Lassen Lassen Volcanic National Park, Butte Lake, east shore 200 yards beyond the outlet. 1844 Comment
  SEINET7571315 Image available Carex petasata L. P. Janeway 2004-6-26 8153 Lassen Poison Lake 7.5' quad, High Cascade Range, about 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1133449  Carex petasata Robert W. Gardner 1937-6-18 G 6 Lassen Burgess Spring Experimental Range 1699 Comment
  UC506938  Carex petasata George A. Fischer, Irwin H. Johnson 1933-7-12 Lassen Patterson Flat Lassen National Forest 1737 Comment
  SEINET10817202  Carex phaeocephala Willard W. Eggleston 1927-7-11 Eggleston 21474 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  CAS-BOT-BC118401  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen Dry drainageway of Rush Creek, N of Smoke Creek Ranch Road, 2 km W of the stateline, Comment
  JEPS107839  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11859 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  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
  CAS-BOT-BC118740  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49455 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS118165  Carex rossii Dean W. Taylor 2009-5-20 20604 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  CHSC99507  Carex sheldonii Lowell Ahart; John Dittes 2008-6-22 15045 Lassen High dry bank of a levee, north of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.5 miles (air) northeast of Bieber. 1267 Comment
  CDA33169  Carex simulata Gordon Leppig, J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch Comment
  CAS-BOT-BC116620  Carex subfusca George Wilson Gillett 1957-7-26 911 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  UC2031888  Carex subfusca Nick Otting and Bruce Newhouse 2003-7-15 680 Lassen Sierra Nevada Mountains, Diamond Mountain, 1700 feet southeast of summit, 8 air miles south-southwest of Susanville. Comment
  CAS-BOT-BC116618  Carex subfusca B. Clear 1938-7-14 s.n. Lassen Lily Ponds, Manzanita Lake, Lassen Park. 1781 Comment
  HSC95282  Carex vesicaria Gordon Leppig 1998-6-12 932 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95285  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95287  Carex vesicaria Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 534 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC114879  Carex whitneyi Beecher Crampton 1964-6-26 7075 Lassen Ca 4 mi SSE Bogard Ranger Station, Lassen National Forest. Comment
  CHSC106687  Castilleja angustifolia Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and trail to Indian Springs. 1439 Comment
  CHSC71100  Castilleja angustifolia Vernon H. Oswald; Lowell Ahart 1998-5-22 9108 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  CHSC93566  Castilleja angustifolia Lowell Ahart; John Dittes 2005-6-2 11941 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  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
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC249619  Castilleja applegatei subsp. pinetorum Alice Eastwood; John Thomas Howell 1940-6-15 8326 Lassen Grasshopper Valley Comment
  CHSC60412  Castilleja applegatei subsp. pinetorum Mary Ann Showers 1992-6-13 2538 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  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
  JEPS85742  Castilleja applegatei subsp. pinetorum Roy E. Buck and Robert A. Price 1988-6-26 1030 Lassen ca 0.5 air mi n Fredonyer Peak main summit (on subsidiary peak, ca 30 air mi nne of Susanville); Fredonyer Peak 2377 Comment
  UC1136983  Castilleja applegatei subsp. pinetorum L. R. Short and J. Warren 1936-6-5 S- 378 Lassen Burgess Spring Experiment Range; Lassen Forest 1792 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
  SEINET3159144  Castilleja chromosa J. L. Strother 1970-5-23 954 Lassen about 6 mi N of Honey Lake 1280 Comment
  CHSC117183  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 21021 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
  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
  JEPS126527  Castilleja lacera Lowell Ahart, John Dittes 2016-6-7 21021 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC6268  Castilleja linariifolia P. Balch 1955-7-21 Lassen Willow Creek, Eagle Lake. 1463 Comment
  UC1523790  Castilleja miniata Gary Schoolcraft Aug 1979 Lassen Goodrich Meadow 1554 Comment
  CAS-BOT-BC244887  Castilleja miniata Alice Eastwood 1912-8-22 1784 Lassen trail from Morgans Springs to Sulphur Works. Lassen Butte Region. Comment
  CAS-BOT-BC241003  Castilleja pilosa Lassen 1927 G. S. Crew 1927-6-25 22 Lassen Lassen National Forest 1706 Comment
  CHSC64895  Castilleja pilosa Vernon H. Oswald; Vernon H. Oswald 1995-6-26 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  CHSC99291  Castilleja pilosa Lowell Ahart; John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS17615  Castilleja pilosa Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5410 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadow, s end of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS80679  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5531 Lassen nw corner Eagle Lake; North Eagle Lake Campground 1524 Comment
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0037005  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-19 14879 Lassen East bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  RSA637591  Castilleja pilosa Michael A. Vincent 1999-6-9 8584 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CAS-BOT-BC241004  Castilleja pilosa E. K. Balls 1950-5-19 14 .778 Lassen 17.5 mi. W. of Madeline on rd. from Adin 1676 Comment
  HSC103924  Castilleja tenuis L. Ahart, John Dittes 2008-6-22 15027 Lassen Big Valley; ~5 mi. (air) NE of Bieber, and ~2.1 mi. (air) NE of the Headquarters at Ash Creek State Wildlife Area 1263 Comment
  RSA0045639  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-22 15027 Lassen About 20 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about, 5.0 miles (air) northeast of Bieber. 1262 Comment
  UC1137685  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen Forest 1743 Comment
  SJSU11528  Castilleja tenuis J. W. Tilden 1960-6-27 1514 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CHSC46505  Ceanothus cordulatus Lowell Ahart 1974-7-9 514 Lassen Growing along the edge of Eagle Lake Road on dry stony soil, about 4 miles west of Susanville. 1584 Comment
  CHSC7725  Ceanothus cuneatus Berverly J. Wise 1969-4-21 91 Lassen 2.6 mi. south of Susanville on the Old Dump Rd. 1341 Comment
  CAS-BOT-BC52048  Ceanothus prostratus John Thomas Howell 1976-7-19 51982 Lassen on Gold Run Creek Southwest of Susanville 1386 Comment
  CDA5726  Ceanothus prostratus Gary Schoolcraft 2000-4-25 2890 Lassen 3.5 miles north of Susanville along Highway 139. Comment
  CHSC107342  Ceanothus prostratus Lowell Ahart; John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC7727  Ceanothus prostratus Beverly J. Wise 1969-4-21 90 Lassen Approx. 2 mi. past Susanville old dump on old dump road. 1341 Comment
  RSA152665  Ceanothus prostratus I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16317 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  HSC99160  Ceanothus prostratus Paul J. CaraDonna 2009-5-17 133 Lassen Vista Point, S of highway, 0.25 mi. S of mile marker 58 1524 Comment
  CHSC6287  Ceanothus velutinus R. Clicquennoi 1967-7-1 37 Lassen Four miles s of Eagle Lake Biology Station off Gallatin Beach Road. 1554 Comment
  RSA716140  Ceanothus velutinus L. Ahart 2005-6-2 11943 Lassen 1.5 miles NE of the Anderson Ranch home, Long Valley, 6 miles (air) N of intersection of Scott Road and Hwy 70, 7.5 miles (air) NW of Hallelujah Jct. 1602 Comment
  CAS-BOT-BC52437  Ceanothus velutinus var. velutinus 1927-7-15 58 Lassen Lassen Forest, 1/2 mi. South of Bogard Ranger Sta. 1737 Comment
  SEINET10690337  Ceanothus velutinus var. velutinus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CDA1996  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen 1 mi. W of Johnstonville, on N side of old road to Susanville. (A27 ? Johnstonville Rd. N of Center Rd.) 0 Comment
  CAS-BOT-BC272110  Centaurea cyanus Margaret Williams; Steven Williams 1974-7-26 74 -L-9 Lassen Near Hallelujah Junction west of Why 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  CDA37979  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen Secret Valley, Highway 395, 3.3 miles north of road to Karlo. 0 Comment
  RSA121127  Centaurea repens E. Sawyer 1935-6-27 239 Lassen 5 miles NNE of Beckwith Pass Comment
  CAS-BOT-BC281208  Centaurea stoebe subsp. micranthos Lee E. Wheeler 1962-8-15 s.n. Lassen Doyle area Comment
  UCD130124  Centaurea virgata subsp. squarrosa Dan Marcum 1980-8-24 s.n. Lassen Big Valley. Comment
  JEPS46972  Centaurium exaltatum W. L. Jepson 1918-8-2 7759 Lassen Beckwith Pass 1463 Comment
  NY187215  Centaurium exaltatum B. J. Ertter 1987-7-24 7305 Lassen Ca. 3/4 mi ENE of Beckwourth Pass at end of crumbling paved road. 1524.0 Comment
  RSA715992  Centaurium muehlenbergii L. Ahart, John Dittes 2005-6-2 11977 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CHSC29928  Cerastium fontanum subsp. vulgare Robin L. Ondricek 1978-6-16 77 Lassen In the meadow below the dam at Murrers Upper Meadow. 1548 Comment
  HSC26513  Cercocarpus ledifolius J. P. Smith, J. O. Sawyer 1972-5-6 5241 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  JEPS126473  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -063 Lassen Take 139 north to Fredonyer Peak. Comment
  CAS-BOT-BC143809  Cercocarpus ledifolius var. ledifolius A. G. Brenneis 1928-5-28 B 3 Lassen 1/2 mi. East of Willow Springs, Lassen National Forest 1371 Comment
  CHSC6241  Cercocarpus ledifolius var. ledifolius W. Vinyard 1946-6-17 Lassen Specimen with flowers from summit Mt. Fredonyer. 2421 Comment
  UC452575  Cercocarpus ledifolius var. ledifolius Mrs. R. M. Austin 1879-1 Lassen Comment
  UC764012  Cercocarpus ledifolius var. ledifolius R. F. Hoover 1940-9-21 4604 Lassen 4 mi w of Susanville Comment
  SD8909  Chaenactis douglasii R. M. Austin Aug 1882 Lassen Comment
  CAS-BOT-BC276615  Chaenactis douglasii var. douglasii Louella Bass 1973-6-14 104 Lassen Elysian Valley 1325 Comment
  CHSC23518  Chaenactis douglasii var. douglasii Wayne O. Baum 1971-7-6 71 -50 Lassen Slope of Gallatin Peak. 2011 Comment
  JEPS19806  Chaenactis douglasii var. douglasii Rimo Bacigalupi with S. Galen Smith 1957-6-28 6012 Lassen ne of Karlo (along U.S. Highway 395, near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  UC1567442  Chaenactis stevioides G. Schoolcraft 1989-5-31 1886 Lassen about 4 mi n of Wendel Rd. (along Skedaddle Ranch Road) 1493 Comment
  CHSC30603  Chamaebatiaria millefolium Mary Nesset 1975-7-16 10 Lassen E.L.B.S. water tank. 1554 Comment
  CHSC6251  Chamaebatiaria millefolium 1944-7-16 Lassen West side of Eagle Lake. 1584 Comment
  UC1125091  Chamaesaracha nana Robert W. Gardner 1937-6-20 G- 23 Lassen Burgess Spring Experimental Range; Halls Flat Quad. 1699 Comment
  CHSC31977  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart; J. T. Howell 1974-7-9 532 Lassen Along edge of rd, 4 mi w of Susanville. 1584 Comment
  SJSU10817  Chamaesyce serpyllifolia C. L. Kline 1965-7-12 190 Lassen 8.3 mi NE of Susanville by Hwy 139 1036 Comment
  UC1924223  Chamaesyce serpyllifolia var. serpyllifolia Debra Valov 2004-6-8 2004251 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC94958  Cheilanthes intertexta Donald E. Lepley 2006-6-18 Lassen Southeast of Dixie Valley, about 2.5 air miles west of Pat Morris Spring. Take County Road 404 southeast from Pittville area to Little Valley, then Road 35N05 (USFS 22) about 15 miles to Black Hole and junction with Road 35N06; follow the latter about one mile just onto Lassen National Forest land and walk north about 50 yards to low escarpment. 1591 Comment
  UC1949078  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  UC1594604 Image available Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake S side of Hwy 44, between Old Station and Susanville, 1.2 mi SE of County Road A21 1745 Comment
  CHSC6235  Chimaphila menziesii P. Balch 1955-7-22 Lassen Eagle Lake. Between Eagle Lake and Pittville road. 1676 Comment
  CAS-BOT-BC247862  Chorizanthe watsonii John Thomas Howell 1962-6-19 37885 Lassen 3 mi. s. of Hallelujah Junction 1524 Comment
  CHSC23506  Chrysolepis sempervirens Wayne O. Baum 1971-7-8 71 -64 Lassen E. slope of Gallatin Peak. 1920 Comment
  UC1135264  Chrysolepis sempervirens A. Simontacchi 1940-6-15 881 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 2164 Comment
  UCSB62935  Chrysolepis sempervirens Sarr, Dan 1995-7-31 Lassen within crater of Crater Mountain 670 Comment
  CDA46  Chrysothamnus albidus O. W. Newman Aug 1915 s.n. Lassen Susanville. Comment
  CAS-BOT-BC140657  Chrysothamnus humilis Clare B. Hardham 1971-8-22 18391 Lassen Diamond Mountain 2346 Comment
  SEINET4671623 Image available Chrysothamnus nauseosus subsp. consimilis Carl B. Wolf 1932-7-18 Lassen Big Valley, 2 6/10 miles from Bieber on road to; Alturas. 1268 Comment
  UCR268964  Chrysothamnus viscidiflorus subsp. puberulus Jim Andre 2013-7-12 31420 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  CAS-BOT-BC105905  Chrysothamnus viscidiflorus subsp. viscidiflorus Ludwig A. Waitzinger 1924-8-17 s.n. Lassen Susanville hill west of north st Comment
  JEPS21409  Chrysothamnus viscidiflorus subsp. viscidiflorus W. L. Jepson 1918-8-4 7813 Lassen e of Eagle Lake; Horse Lake 1554 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
  UC747217  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Thomas Robbins 1945-10-7 2154 Lassen 2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  JEPS103168  Chylismia claviformis subsp. cruciformis Beth Corbin 2002-5-1 1065 Lassen Honey Lake Valley, about 2 mi SE of Wendel. 1234 Comment
  UC1567437  Chylismia claviformis subsp. cruciformis G. Schoolcraft 1989-5-16 1875 Lassen w Hwy 395 (ca 2 mi s of Karlo turnoff) 1356 Comment
  CDA38210  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  SEINET218720  Cirsium acaulescens J. M. Gillett, A. G. Moulds 1964-6-9 12640 Lassen Westwood. Meadow along stream. Comment
  UC1119176  Cirsium andersonii H. P. Hagge 1929-9-14 32 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  UCD159575  Cirsium arvense D. S. Park 2011-6-27 311 -2 Lassen East of Westwood. Growing near Willard Creek. Comment
  CDA1129  Cirsium canescens T. C. Fuller 1966-7-22 14981 -B Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC278012  Cirsium cymosum Peter H. Raven; Otto T. Solbrig 1958-6-17 13303 Lassen 8.0 miles north of Madeline along United States Highway 395 Comment
  CDA1167  Cirsium cymosum T. C. Fuller 1959-7-7 2763 Lassen Hwy 395; 1 mile north of Ravendale. 0 Comment
  CHSC7638  Cirsium cymosum Beverly J. Wise 1969-5-15 17 Lassen 23.8 mi. East of Susanville of Hwy 395. 1524 Comment
  CAS-BOT-BC278001  Cirsium cymosum John Thomas Howell 1934-6-10 11908 Lassen Madeline Plains near Termo Comment
  SD113205  Cirsium cymosum Darley F. Howe 1964-7-31 3947 Lassen Near east bank of Blue Lake, Warner Mountains, Modoc National Forest. 1890 Comment
  JEPS30611  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  SEINET7451109 Image available Cirsium cymosum var. cymosum J. A. Young 1982-6-9 s.n. Lassen Meyers Ranch, Adin, CA 1280 Comment
  CAS-BOT-BC278091  Cirsium douglasii var. breweri Peter H. Raven; Otto T. Solbrig 1958-6-17 13280 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  SEINET7144190  Cirsium occidentale var. candidissimum Noel 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 junction with Calif 70 (Halleluja Junction).; 0 1524 Comment
  UC91792  Cirsium occidentale var. candidissimum T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UCD170227  Cirsium occidentale var. candidissimum K. M. Meyer; A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. 1.3 miles on road 110, off Highway A21. Mixed Pine and populus forest. Near Susan River. 1821 Comment
  RSA186826  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CDA37705  Cirsium ochrocentrum Robin Breckenridge 2006-8-15 s.n. Lassen Madeline Plains, Westside Road, old Basque homestead. 0 Comment
  UC1119211  Cirsium scariosum var. americanum A. Simontacchi 1940-6-3 794 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CDA1562  Cirsium scariosum var. americanum D. Chambers, M. Carstens 1979-8-22 s.n. Lassen Modoc National Forest, private inholding, south side of Juniper Creek. 0 Comment
  CDA20242  Cirsium undulatum G. D. Barbe 1984-8-2 4186 Lassen Madeline Plains; Just e of Westside Rd, 3 mi no f Termo-Grasshopper Rd., Madeline Plains, along e base of Dry Valley Ridge. 1615 Comment
  RSA186831  Cirsium undulatum T. C. Fuller 1966-7-22 14981 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC439004  Cistanthe monosperma C. L. Hitchcock 1940-5-26 6608 Lassen Ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1371 Comment
  CAS-BOT-BC162636  Clarkia John Thomas Howell 1974-7-30 s.n. Lassen Diamond Mountain - Sierra Nevada 2286 Comment
  CAS-BOT-BC164868  Clarkia rhomboidea H. D. Ripley; R. C. Barneby 1943-6-13 5693 Lassen South of Milford 1432 Comment
  CHSC61223  Clarkia stellata P. V. Caldwell 1972-6-15 225 Lassen Eagle Lake: W face on Black Mtn. 1706 Comment
  CAS-BOT-BC451730  Claytonia lanceolata 1927-5-25 6 Lassen Lassen National Forest. Norval Flat 1747 Comment
  RSA0080500  Claytonia lanceolata M. S. Baker 1952-5-23 12429 Lassen Hwy. 36; 0.5 mi. West of Predonyer Pass. 1753 Comment
  UC1483836  Claytonia perfoliata subsp. intermontana G. Schoolcraft 1980-4-8 200 Lassen just w Hwy. 395 (along Shaffer Mountain peak road); Shaffer Mountain 1402 Comment
  CHSC99500  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2008-6-20 14910 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC108022  Claytonia rubra subsp. rubra Lowell Ahart; John Dittes 2011-6-20 17486 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
  CHSC92649  Claytonia rubra subsp. rubra L. P. Janeway 2005-7-4 8464 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  JEPS118455  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2011-6-20 17486 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
  JEPS25528  Cleome platycarpa Rimo Bacigalupi with Lincoln Constance 1959-6-16 7142 Lassen 0.25 mi s U.S. Highway 395 junction with road to Smoke Creek (beside U.S. Hwy 395) 1341 Comment
  RSA657118  Cleomella hillmanii G. L. Clifton 1995-5-24 34202 Lassen About 3/4 miles north of Calneva Lake. 1220 Comment
  CAS-BOT-BC423224  Cleomella plocasperma Arnold Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel 1231 Comment
  CHSC77207  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  NY242362  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  CHSC112413  Collinsia parviflora Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18737 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC68769  Collinsia parviflora Vernon H. Oswald; Lowell Ahart 1997-5-27 8500 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  JEPS94700  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9126 Lassen 5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  JEPS95129  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1997-5-27 8500 Lassen North of Susanville (on Forest Rte. 38N04 (between Hwy. 139 near Willow Creek Guard Station & Coyote Flat), 0.1 mi. e. of Hwy. 139, on flood plain of small creek paralleling rd.) 1546 Comment
  SBBG66419  Collinsia parviflora S. W. Hutchinson -Jun-1925 Lassen Eagle Lake 1554 Comment
  SEINET13396903  Collinsia parviflora J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch, near Adin. 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
  SEINET13405554  Collinsia torreyi D. E. Brix 1962-5-2 s. n. Lassen Red Rock Road. 1433 Comment
  UC773850  Collinsia torreyi var. latifolia L. R. Short 1936-6-25 S 455 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1752 Comment
  JEPS117587  Collomia grandiflora Lowell Ahart, John Dittes 2010-7-31 17002 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  HSC16917  Collomia grandiflora Jim Vaughn 1956-7-25 Lassen Drakesbad 1738 Comment
  RSA712933  Collomia tinctoria L. P. Janeway 2005-7-4 8468 Lassen Ridge top north above Long Valley; 0.4 km west of Road 34N41. High Cascade Range. 1752 Comment
  UC1123659  Collomia tinctoria A. Simontacchi 898 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quadrangle Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  HSC95333  Comarum palustre Gordon Leppig, Tony LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  CAS-BOT-BC286113  Conyza canadensis John Thomas Howell 1974-7-10 50532 Lassen Elysian Valley 1325 Comment
  POM33281  Conyza canadensis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  POM33286  Conyza canadensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  UC31437  Conyza canadensis J. Burtt Davy Jun 17 1897-Jun 24 1897 3393 Lassen borders of hot springs Amedee; Honey Lake Valley Comment
  CAS-BOT-BC286114  Conyza canadensis Louella Bass 1983-9-1 s.n. Lassen At Edward Bass residence, Standish Comment
  UC1483856  Corallorhiza maculata G. Schoolcraft 1980-7-15 308 Lassen w Bieber; Big Valley Mountain timber sale area (Bureau of Land Managem 1798 Comment
  POM43099  Cordylanthus maritimus subsp. canescens Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  UC762620  Cordylanthus ramosus R. F. Hoover 1940-10-5 4678 Lassen Secret Valley Comment
  CAS-BOT-BC212205  Cornus sericea Louella Bass 1973-5-29 EU 85 Lassen Elysian Valley 1325 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
  CAS-BOT-BC290390  Crepis acuminata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49462 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC21233  Crepis acuminata Robert A. Schlising 1974-6-25 3148 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station. Near Bly Tunnel. Comment
  CHSC75453  Crepis acuminata Vernon H. Oswald; Lowell Ahart 1999-6-9 9742 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  UC581294  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2346 Lassen about 4 mi se Willow Creek Range Station (se of Adin) 1767 Comment
  CHSC93561  Crepis intermedia Lowell Ahart; John Dittes 2005-6-1 11918 Lassen Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  CDA20365  Crepis intermedia D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Secret Valley. 0 Comment
  UC581249  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2257 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Co.) Comment
  POM17695  Crepis monticola Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1136842  Crepis occidentalis George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 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
  UC30521  Crepis occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3406 Lassen Chat Honey Lake Valley Comment
  UCD130973  Crepis occidentalis Grady L. Webster 1989-5-13 7722 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CHSC60814  Crepis occidentalis subsp. conjuncta Vernon H. Oswald; Lowell Ahart 1993-6-28 5606 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  CAS-BOT-BC376565  Crepis occidentalis subsp. occidentalis B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6566 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield 1330 Comment
  POM230953  Crepis occidentalis subsp. pumila G. Ledyard Stebbins, J. A. Jenkins 1937-7-15 2359 Lassen West side of Big Valley Mountain on Highway 1220 Comment
  UC1137698  Crepis occidentalis subsp. pumila A. Simontacchi 1940-6-11 845 Lassen 3.1 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  POM203850  Crepis occidentalis subsp. pumila J. T. Howell 1934-6-10 11872 Lassen Janesville Comment
  JEPS107791  Crepis pleurocarpa Lowell Ahart, John Dittes 2005-6-2 11934 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  CAS-BOT-BC299713  Crocidium Louella Bass 1973-4-22 23 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  NY1153787  Cryptantha affinis G. Schoolcraft 1990-6-12 2089 Lassen About 17 miles east of Ravendale in Pine Dunes RNA 1707 Comment
  SEINET10455878  Cryptantha circumscissa Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 879 Lassen Collected 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  CHSC47980  Cryptantha intermedia Vernon Oswald 1986-6-15 2113 Lassen Hwy 36, 15.0 mi e of Plumas-Lassen Co. line, 3.5 mi e of Fredonyer Pass. 1508 Comment
  JEPS124572 Image available Cryptantha intermedia var. grandiflora S. Hardinghaus 1967-7-11 167715 -114 Lassen 6 mi. S. of Eagle Lake where meets Hw 139 at west shore, on Hwy 139. Comment
  SEINET8545983  Cryptantha intermedia var. grandiflora J. A. Young 1982-6-7 s.n. Lassen Redlands. 1676 Comment
  UCD119960  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley. 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
  UC79293  Cryptantha simulans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CHSC65300  Cryptantha torreyana Vernon H. Oswald; Lowell Ahart 1995-8-14 7198 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 4.7 mi W of Hwy. 395, N of Susanville. 1676 Comment
  POM72585  Cryptantha torreyana Marcus E. Jones 1897-6-25 7102 Lassen Susanville. 1341 Comment
  HSC68930  Cryptantha watsonii Gary Schoolcraft 1980-5-7 219 Lassen On Honey Lake Island 1220 Comment
  CHSC6214  Cryptogramma acrostichoides P. Balch 1955-6-1 Lassen Silver Lake, Eagle Lake. 1981 Comment
  UC570279  Cupressus bakeri D. Dunning 1935-11-17 Lassen 2 mi e Burney Spring; Burney Quadrangle 1463 Comment
  SEINET248370  Cusickiella douglasii Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale. 1700 Comment
  UC1541364  Cycladenia humilis var. humilis H. E. and S. T. Parks 1928-6-20 Lassen Mt. Lassen, Drakesbad 2133 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
  SBBG50491  Cynoglossum occidentale J. T. Howell 1974-7-9 50483 Lassen between Susanville and SW end of Eagle Lake 1828 Comment
  UC1587038  Cynoglossum occidentale G. Schoolcraft 1991-7-30 2192 Lassen Bear <Sring> on n. side of widow Mt. 1780 Comment
  CAS-BOT-BC114052  Cyperus squarrosus John Thomas Howell 1974-7-10 50523 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC114167  Cyperus squarrosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49512 Lassen Elysian Valley, W of Janesville. 1325 Comment
  CHSC66868  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir SW of Westwood. Along the receding marshy edge of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  UC569547  Cyperus squarrosus H. S. Yates 1936-8-11 6065 Lassen Baxter Creek Susanville Quad., Baxter Creek 1280 Comment
  SEINET7725892  Cypripedium californicum Unknown Lassen Mt. Dyer 1829 Comment
  UCR244032  Dactylis glomerata Jim Andre, G. L. Clifton 1993-6-3 19702 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  CHSC59574  Damasonium californicum Mary Meyer 1980-6-1 559 Lassen Along creek off Champs Flat Road. 1677 Comment
  JEPS32207  Damasonium californicum J. B. Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  UC1130605  Damasonium californicum Robert W. Gardner 1937-6-26 G- 25 Lassen Poison Lake Halls Flat Quad., Poison Lake Comment
  UC985942  Damasonium californicum Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 755 Lassen on Great Northern R.R. <Nubeiber> (Hwy. 299); , Great Northern R.R. Comment
  HSC24237  Damasonium californicum John Pratt 1970-6-21 33 Lassen Seasonally flooded lake Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
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Jul 11 2013
  UCD61007  Danthonia californica var. americana L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  HSC69064  Danthonia unispicata Gary Schoolcraft 1980-7-28 332 Lassen Meadow E of Tule Mountain. 2043 Comment
  JEPS88200  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1996-6-17 7803 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CHSC106590  Delphinium andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC64806  Delphinium andersonii Vernon H. Oswald 1995-5-24 6784 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. On the s side of the road. 1219 Comment
  RSA0005300  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CHSC67294  Delphinium nuttallianum James D. Jokerst 1991-5-29 3306 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  OBI75897  Deschampsia cespitosa Anthony Baniaga 2011-8-17 508 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1978 Comment
  CAS-BOT-BC194258  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1943-7-10 49769 Lassen Near Westwood - Sierra Nevada 1554 Comment
  RSA126933  Deschampsia cespitosa subsp. cespitosa G. A. Fischer, I. H. Johnson 1933-7-14 F- 244 Lassen Patterson Flat 1738 Comment
  UC188776  Deschampsia cespitosa subsp. cespitosa Milo S. Baker July 1894 Lassen Eagle Lake Comment
  CAS-BOT-BC192745  Deschampsia danthonioides Malcom A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  CHSC117220  Deschampsia danthonioides Lowell Ahart; John Dittes 2016-6-7 20994 Lassen West of pond, 110 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
  CHSC29861  Deschampsia danthonioides Robin L. Ondricek 1978-7-15 102 Lassen Where the spring arises above the dam at Murrers Upper Meadow. 1548 Comment
  JEPS107688  Deschampsia danthonioides Lowell Ahart, John Dittes 2005-6-1 11913 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  POM114878  Deschampsia danthonioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 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
  POM313167  Deschampsia elongata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  UCD63560  Deschampsia elongata John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49467 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CAS-BOT-BC201808  Deschampsia elongata Malcom A. Nobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  CHSC60884  Descurainia incisa subsp. filipes Vernon H. Oswald; Lowell Ahart 1993-7-8 5656 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along a ridge between the railroad and the lake. 1709 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
  SEINET10841501  Descurainia sophia Mary Susan Taylor 1974-1 Taylor 258 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC61163  Dicentra uniflora Vernon H. Oswald; Lowell Ahart 1993-5-12 5374 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in forest. 1737 Comment
  CHSC34409  Dieteria canescens Terrance Finn 1979-7-14 11 Lassen +/- .75 mi. from Hallelujah Junction, dirt road towards well. 1493 Comment
  CAS-BOT-BC299810  Dieteria canescens var. canescens Ella Dales Cantelow 1940-10-5 3412 Lassen N.W. of Johnstonville Comment
  CHSC14038  Dieteria canescens var. shastensis S. Villard 1973-7-12 62 Lassen Slopes of Galatin Peak. Comment
  CHSC98341  Dieteria canescens var. shastensis B. Castro; L. P. Janeway 2005-7-10 1504 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
  SFV18616  Dieteria canescens var. shastensis T. W. Nelson, J. P. Nelson 1990-7-14 8773 Lassen Bogard rest area. 1730 Comment
  CHSC63378  Dimeresia howellii V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6353 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  CAS-BOT-BC153632  Diplacus jepsonii Lassen 1927 G. S. Crew 1927-6-25 23 Lassen Norval Flat, Lassen National Forest 1747 Comment
  CHSC4832  Diplacus jepsonii R. Carter 1967-7-14 602 Lassen Growing on n side of rd. ca. 3.5 mi e of Silver Lake between rd (31N07) and Susan River. 1828 Comment
  CAS-BOT-BC153683  Diplacus mephiticus Mike Vasey 1990-6-30 9050 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CHSC35128  Diplacus mephiticus N. E. Heiken 1978-6-27 53 Lassen SE side of Eagle L. 1554 Comment
  SEINET201638 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8454 Lassen 25 mi NW of Reno Comment
  CAS-BOT-BC151428  Diplacus nanus Doris Kildale Gillespie 1930-5-12 9354 Lassen Between Susanville and Leavitt Lake Comment
  CAS-BOT-BC208722  Distichlis spicata G. Schoolcraft 1986-9-10 1675 Lassen Along N. shore of Eagle Lake Comment
  CHSC67075  Distichlis spicata Willis Ball 1969-6-19 11 Lassen Found in dry Eagle Lake basin about 1/2 mile N.E. of E.L.B.S. 1554 Comment
  UC38076  Distichlis spicata J. Burtt Davy June 17-24 1897 3304 Lassen Honey Lake Valley Comment
  CHSC36491  Dodecatheon alpinum Theresa Costa 1982-6-4 35 Lassen Murrers Upper Meadow. Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  RSA772873  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC60825  Downingia bacigalupii Vernon H. Oswald; Lowell Ahart 1993-6-28 5612 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  JEPS120905  Downingia bacigalupii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18738 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  UC1143165  Downingia bacigalupii A. Simontacchi 1940-6-16 874 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1229824  Downingia bacigalupii John Weiler 1959-4-22 59203 Lassen 11.1 mi se Eagle Lake (along county highway A-1) Comment
  UC1520668  Downingia bacigalupii Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9462 Lassen 5.6 mi w U.S. Highway 395; Madeline Plains 1615 Comment
  UCR163269  Downingia bacigalupii Jim Andre 1993-6-29 1408 B Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  CAS-BOT-BC492927  Downingia bacigalupii Louis K. Mann; M. Pat Mann 1963-6-18 s.n. Lassen On State Hwy 139 from Susanville to Adin, 42 mi N of Susanville. Comment
  JEPS108474  Downingia bacigalupii Lisa Schultheis 1995-6-28 233 -95 Lassen SW of Nubeiber, off of 299; S side of road at entrance to Muck Valley Hydroelectric Plant.. Comment
  POM68157  Downingia bacigalupii Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 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
  SEINET10461289  Downingia bicornuta var. bicornuta Mary Merello 1993-6-27 Merello 744 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  UC1101473  Downingia bicornuta var. bicornuta Herbert L. Mason and Verne Grant 1947-7-9 13291 Lassen 5 mi e Bieber Comment
  UC28984  Downingia bicornuta var. bicornuta J. Burtt Davy Jun 17 1897-Jun 24 1897 3348 Lassen Honey Lake Valley Comment
  JEPS108508  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 228 -95 Lassen W sie of Rt. 395, 3.5 mi S of Madeline. Comment
  SEINET12329657  Downingia elegans N. H. Holmgren, Holmgren, P. K. 1978-1 8902 Lassen Madeline Plains, Coyote flat, 14.5 km (9 mi.) east-northeast of Termo and 13 km (8 mi.) airline 1630 Comment
  JEPS3751  Downingia insignis Helen-Mar Wheeler 1952-7-11 Lassen s of Madeline Comment
  SJSU3174  Downingia insignis J. W. Tilden 1958-6-27 1290 Lassen Madeline Comment
  CAS-BOT-BC266476  Downingia laeta Philip A. Munz 1947-5-20 11892 Lassen Milford 1264 Comment
  RSA530016  Downingia laeta D. W. Taylor, Clifton, Palmer, Buck 1988-6-6 9005 Lassen Big Valley; road from Bieber to Lookout, 0.5 miles south of the Modoc County Line. 1250 Comment
  CAS-BOT-BC41370  Draba verna M. S. Taylor 1982-5-7 4428 Lassen Reno Junction on Highway 70 just east of Beckwourth Pass. 1524 Comment
  UC1258491  Draba verna G. Schoolcraft 1980-4-8 202 Lassen along Shaffer Mountain Peak Road just w Highway 395; along Shaffer Mountain Peak Road 1402 Comment
  CHSC69125  Drosera anglica Vernon Oswald; Beth Corbin, Gary Schoolcraft 1997-8-5 8812 Lassen North slope of Robbers Creek at Robbers Spring, so ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  UCD99551  Drosera rotundifolia Barry Rice 2009-7-5 BR 090703 Lassen at Robbers Spring. Comment
  UC1028268  Drymocallis lactea var. austiniae A. Simontacchi 1940-6-6 825 Lassen 9.3 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad. Comment
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Oct 7 2008
  CAS-BOT-BC159342  Drymocallis lactea var. lactea Louella Bass 1973-6-14 106 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CHSC23710  Drymocallis lactea var. lactea Robert Smallwood 1970-6-27 129 Lassen North edge of Dean's Meadow. Comment
  HSC31371  Dysphania pumilio D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19292 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  UC1483817  Eatonella nivea G. Schoolcraft 1980-5-8 226 Lassen sw of Herlong 1255 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  JEPS121286  Elatine Lowell Ahart, John Dittes 2013-7-22 18883 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC107341  Elatine californica Lowell Ahart; John Dittes 2011-6-21 17527 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  RSA0011453  Eleocharis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46985 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  UC1567360  Eleocharis bella G. Schoolcraft 1989-7-18 1982 Lassen S of Clarks Valley Road near Bucks Spring 1874 Comment
  JEPS120126  Eleocharis macrostachya Lowell Ahart, John Dittes 2012-7-9 18293 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1818  Eleocharis macrostachya J. Burtt Davy Jun 17-24 1897 3287 Lassen Honey Lake Valley, W end of lake Comment
  UC1100132  Elodea nuttallii Herbert L. Mason and Verne Grant 1947-7-9 13292 Lassen 5 miles east of Bieber Comment
  UC803919  Elymus G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4008 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  CHSC112467  Elymus caput-medusae Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18749 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET12738784  Elymus elymoides M. Church 2016-6-27 6 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1408 Comment
  UCD61417  Elymus elymoides Beecher Crampton 1954-7-5 2065 Lassen Along Hwy. 36, 5.5 miles west of Susanville. 1447 Comment
  UCD61621  Elymus elymoides R. Tofsrud 1947-7-1 217 Lassen East of Madeline. Comment
  CHSC25916  Elymus elymoides subsp. elymoides K. R. Stern 1967-6-30 2446 Lassen West central side of Eagle Lake. 1554 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
  UC1133007  Elymus elymoides subsp. elymoides H. P. Hagge 1929-9-11 23 Lassen Logan Mtn. Lassen National Forest, Eagle Lake Quadrangle Comment
  JEPS128171  Elymus elymoides var. californicus M. C. Mahoney, J. A. Nash 2017-7-31 CA 350 -86 Lassen On Fredonyer Peak. From Susanville take Highway 139 N towards Eagle Lake and turn right following signs for Fredonyer Peak Fire Lookout. Towards the top, stay right at both forks in the road. Follow the road past the last fork for two miles. Population is on both sides of the road. Comment
  CDA31743  Elymus glaucus A. A. Beetle 1941-6-28 2803 Lassen Near Route 36, 10 miles west of Chester 0 Comment
  UC7793970  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
Read comments
Aug 1 2007
  UCD61838  Elymus glaucus Burle Jones 1940-8-15 Lassen Lassen Park, Hat Creek. Comment
  CAS-BOT-BC206731  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CAS-BOT-BC234092  Elymus multisetus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16343 Lassen Hillside 13.5 mi. E of Susanville Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  CDA31738  Elymus trachycaulus T. C. Fuller 1963-7-15 10888 Lassen 2.9 miles southeast of Pittville, south of road to Little Valley 0 Comment
  UC1024951  Elymus trachycaulus Leo Whitney 1935-6-25 3314 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC70687  Elymus trachycaulus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CHSC114411  Elymus trachycaulus subsp. trachycaulus Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, in landing at end of Road 28N52A. 2133 Comment
  UCD62694  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1932-7-1 Lassen Lassen National Forest. Bogard Ranger Station. Comment
  UCD62706  Elymus trachycaulus subsp. trachycaulus L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  GMDRC7737  Elymus triticoides J. M. Andre, G. Clifton 1993-6-1 33414 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  CHSC76104  Elytrigia elongata Lowell Ahart; Vernon H. Oswald 1999-9-13 8212 Lassen On the edge of a canal, just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  CHSC111257  Ephedra viridis L. P. Janeway; B. Castro 2012-7-3 10940 A Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  CHSC25297  Ephedra viridis Pauleen Broyles 1977-5-30 141 Lassen Spencer's Spring ca 8 km nne of Herlong. 1620 Comment
  CHSC93239  Ephedra viridis John Dittes; Scott Chamberlain 2004-6-28 1022 Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow edge. 1496 Comment
  UC281  Ephedra viridis J. Burtt Davy Jun 17 1897-Jun 24 1897 3342 Lassen Honey Lake Valley Honey Lake Valley (on slopes of lava hills) 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
  SEINET6628957 Image available Epilobium A. W. Harvilik 1967-1 4 Lassen jct. of 5.19 with road to Mutters Meadow 152 Comment
  POM145990  Epilobium angustifolium subsp. circumvagum J. B. Feudge 1927-7-20 1716 Lassen West of Susanville Comment
  CHSC14185  Epilobium brachycarpum M. S. Taylor 1974-7-10 279 Lassen Ca. 50 ft w of road to Gallatin Beach, ca. 5 mi s of Gallatin Beach on Eagle Lake, ca. 10 mi nw of Susanville. 1524 Comment
  CHSC29866  Epilobium brachycarpum Robin L. Ondricek 1978-6-27 72 Lassen .6 mi n of Five Corners along road to ELFS. 1706 Comment
  UC1136768  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  HSC22866  Epilobium brachycarpum John Pratt 1970-6-14 17 Lassen Comment
  CHSC117519  Epilobium campestre Lowell Ahart; John Dittes 2016-7-13 21128 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Biebeer, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS117579  Epilobium campestre Lowell Ahart, John Dittes 2010-7-31 16996 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  HSC95335  Epilobium ciliatum subsp. ciliatum Gordon Leppig 1998-8-17 1054 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC100124  Epilobium ciliatum subsp. ciliatum M. T. Milligan 1964-7-16 143 Lassen 2 mi. W on Silver Lake Rd., along Upper Susan River 1829 Comment
  CHSC115607  Epilobium densiflorum Lowell Ahart; John Dittes 2015-7-13 20307 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber,, Big Valley. 1267 Comment
  CDA20353  Epilobium densiflorum H. Leach August 1949 s.n. Lassen Modoc Plateau; Madeline Plain. 0 Comment
  RSA123006  Epilobium hallianum L. R. Short, J. Warren 1936-6-11 S- 429 Lassen Burgess Spr. Exp. Range 1738 Comment
  HSC95332  Epilobium oregonense Gordon Leppig 1998-7-12 937 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC332739  Epilobium pallidum R. F. Thorne; Larry E. DeBuhr 1975-8-22 46980 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  CDA38101  Epilobium palustre Gordon Leppig 1998-8-17 1049 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC117524  Epilobium torreyi Lowell Ahart; John Dittes 2016-7-13 21126 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miless (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC82195  Epilobium torreyi Thomas W. Nelson, Jane P. Nelson 1980-7-6 6050 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CHSC12451  Equisetum arvense Robert W. Severin 1969-6-26 41 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach, 3 mi s of E. L. B. S. 1645 Comment
  CHSC66368  Equisetum arvense Vernon H. Oswald; Lowell Ahart 1996-6-17 7821 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of a pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CAS-BOT-BC57303  Equisetum laevigatum John Thomas Howell; Gordon H. True 1973-8-1 50235 Lassen Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville 2133 Comment
  CAS-BOT-BC57305  Equisetum laevigatum Clare B. Hardham 1969-8-28 17458 Lassen west of Janesville 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
  CAS-BOT-BC57236  Equisetum laevigatum Alice Eastwood; John Thomas Howell 1940-6-11 7996 Lassen Bieber Comment
  RSA719899  Equisetum laevigatum Michael A. Vincent, K. Levings 2006-7-29 12905 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CHSC77263  Eragrostis cilianensis G. Schoolcraft 1997-8-20 2700 Lassen Safeway parking lot in Susanville. 1264 Comment
  RSA0045087  Eremogone congesta Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  SJSU9835  Eremogone congesta J. W. Tilden 1960-6-27 1505 Lassen foot of Moonlight Rd near Westwood 1524 Comment
  CAS-BOT-BC174189  Eremogone congesta var. congesta Mrs. R. M. Austin; Mrs. Bruce 1898-6-1 2156 Lassen [Madaline] Madeline Plains Comment
  CAS-BOT-BC174199  Eremogone congesta var. congesta L. G. Bennett 1967-6-24 33 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow near Eagle Lake 1493 Comment
  CHSC87106  Eremogone congesta var. congesta L. P. Janeway 2001-6-20 7191 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  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
  CAS-BOT-BC174201  Eremogone congesta var. congesta Clarence R. Quick 1964-7-29 64 -88 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CHSC29857  Eremogone congesta var. simulans Robin Ondricek 1978-6-6 32 Lassen At Murrers Upper Meadow, .5 mi E of intersection with main rd. to ELFS and tunnel crossing. 1569 Comment
  CHSC5228  Eremogone congesta var. simulans J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2421 Comment
  CHSC117206  Eremogone congesta var. subcongesta Lowell Ahart; John Dittes 2016-6-7 20983 Lassen 40 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-BC159992  Eremothera boothii subsp. alyssoides G. L. Stage 1962-6-14 62 -131 Lassen 19 miles southeast of Ravendale 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-BC160009  Eremothera boothii subsp. boothii Louella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  CHSC23501  Eriastrum signatum Wayne O. Baum 1971-7-16 71 -78 Lassen S. slope of Gallatin Peak. 2042 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
  CAS-BOT-BC515175  Eriastrum signatum Rimo Bacigalupi; G. T. Robbins 1955-7-21 5417 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  OBI82827  Eriastrum sparsiflorum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3932 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  NY1012936  Eriastrum sparsiflorum var. wilcoxii G. Schoolcraft 1985-7-29 1492 Lassen West slopes of Fort Sage Mountains 1585 Comment
  UC134007  Eriastrum wilcoxii Walter Bryant July 1888 Lassen Comment
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  UC1118663  Ericameria bloomeri H. P. Hagge 1929-9-11 15 Lassen Logan Mt. Eagle Lake Quad., Logan Mtn. 1828 Comment
  UC1136849  Ericameria bloomeri L. R. Short and J. Warren 1936-8-17 S- 497 Lassen Burgess Spr. Exp. Range Lassen Forest 1767 Comment
  UC1523743  Ericameria bloomeri Gary Schoolcraft 1981-8-25 565 Lassen w side of Eagle Lake (along main road) Comment
  CAS-BOT-BC298178  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298183  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-4 2397 Lassen Big Valley, 3.6 miles from Bieber on road to Alturas 1267 Comment
  OBI5746  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-5 2401 Lassen 3/4 mi E of Termo 1646 Comment
  CAS-BOT-BC294182  Ericameria nauseosa var. speciosa Margaret Williams 1974-8-4 74 -L-71 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  HSC68556  Ericameria nauseosa var. speciosa Gary Schoolcraft 1980-8-10 359 Lassen Along Post Camp Rd. N of Shinn Peaks 1890 Comment
  CAS-BOT-BC299487  Ericameria nauseosa var. washoensis Gary Schoolcraft 1984-9-11 1375 Lassen Along Hwy. 395 about 1/2 mi. south of Ramhorn Campground Road 1615 Comment
  CAS-BOT-BC293008  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 1/2 mile from Janesville on the road to Wendel - Western edge of Honey Lake Valley 1280 Comment
  CHSC93247  Erigeron aphanactis var. aphanactis John Dittes; Scott Chamberlain 2004-6-28 1008 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  UC87724  Erigeron aphanactis var. aphanactis unknown 1892-6-22 Lassen Honey Lake Comment
  RSA0049609  Erigeron aphanactis var. congestus Dean Wm. Taylor 2012-6-7 21229 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  SEINET8082921 Image available Erigeron bloomeri S. Jesselson, M. Gray 2015-5-28 NV 030 -1065 Lassen Plumas allotment: Hwy 395 into CA, first meian crossing after check station, turn right, follow road right (S), take 2nd left, follow uphill road bearing SE until reach gray metal gate. 1727 Comment
  SEINET8513560 Image available Erigeron bloomeri A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1090 Lassen Constantia Allotment, West of Peterson's 1490 Comment
  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
  SEINET3132724  Erigeron bloomeri J. L. Strother 1970-5-23 952 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  CAS-BOT-BC294485  Erigeron bloomeri var. bloomeri John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50676 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CHSC105254  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
  UC1609105  Erigeron bloomeri var. bloomeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  RSA636042  Erigeron bloomeri var. bloomeri Michael A. Vincent 1999-6-9 8583 b Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CAS-BOT-BC297196  Erigeron coulteri Clare B. Hardham 1971-8-22 18398 Lassen Diamond Mountain 2133 Comment
  CHSC65297  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1995-8-14 7193 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small stream, N of Susanville. 1676 Comment
  CHSC66373  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1996-6-17 7808 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the Susan River E of Devils Corral Trailhead and W of the 6.0 mile post. 1402 Comment
  JEPS127714  Erigeron divergens Alejandro Brambila, Michael Dolan 2016-7-20 CA 320 -169 Lassen Railroad trail north of Tule Mountain. Collection is North of gate on Modoc-Lassen county line. 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
  CAS-BOT-BC300373  Erigeron eatonii var. plantagineus Alice Eastwood; John Thomas Howell 1940-6-15 8320 Lassen Said Valley Comment
  CAS-BOT-BC300374  Erigeron eatonii var. plantagineus Alice Eastwood; John Thomas Howell 1940-6-11 7980 Lassen Big Valley Mts. 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
  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
  JEPS1207  Erigeron eatonii var. plantagineus Milo S. Baker 1952-5-23 12433 Lassen Hwy 36 1/2 mi w Fredonyer Pass 1752 Comment
  UC1136837  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  UC1587058  Erigeron eatonii var. plantagineus G. Schoolcraft 1991-6-18 2162 Lassen along Hwy 139 4 mi w Said Valley Res. 1706 Comment
  UC87584  Erigeron eatonii var. plantagineus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC300425  Erigeron elegantulus Roxana S. Ferris; Rena Duthie 1919-6-12 20 Lassen Madeline Comment
  JEPS95073  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  CHSC72297  Erigeron filifolius L. P. Janeway; Glenn Clifton 1998-7-9 5739 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  UCD131967  Erigeron glacialis var. glacialis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volc. Nat'l Park. 2286 Comment
  JEPS97369  Erigeron inornatus var. calidipetris Vernon H. Oswald and L. Ahart 1995-7-24 7146 Lassen T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor 1905 Comment
  OBI76966  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen Natl Forest.N of 30N61, W of A21. Swain Mtn quad. T30N R8E sec 26 NW of SW 1728 Comment
  CAS-BOT-BC295472  Erigeron lassenianus var. lassenianus Parkison 1916-6-21 40 Lassen Lassen National Forest. Near Patterson Cabin 1706 Comment
  CAS-BOT-BC295505  Erigeron linearis John Thomas Howell 1934-6-14 12137 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  HSC63770  Erigeron linearis Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  CHSC77195  Erigeron nevadincola G. Schoolcraft 1998-6-30 Lassen N. slope of Ft. Sage Mtns. 1950 Comment
  CHSC20347  Erigeron philadelphicus Mary E. Meyer 1973-7-7 17 Lassen Upper Murrer's Meadow. 1572 Comment
  CHSC30580  Erigeron philadelphicus Sori H. Shad 1970-6-25 46 Lassen 3 mile from E.L.B.S. in Meadow. 1524 Comment
  CHSC5209  Erigeron philadelphicus M. West 1946-7-10 Lassen Pine Creek, Eagle Lake. 1584 Comment
  HSC5530  Erigeron philadelphicus M. S. Baker 1893-1 Lassen Vicker's Ranch, Big Valley, collected in the summer Comment
  CDA34230  Erigeron pumilus subsp. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  RSA702451  Erigeron pumilus subsp. intermedius L. P. Janeway 2004-6-26 8163 Lassen High Cascade Range, alt peteeson Flat, Balcks Mtn Experimental Forest. 1767 Comment
  CAS-BOT-BC300122  Erigeron pumilus var. intermedius Alice Eastwood; John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  HSC100803  Erigeron pumilus var. intermedius Lowell Ahart, John Dittes 2010-7-31 16986 Lassen 3,330 ft. N of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1521 Comment
  UC31450  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow Dixey Valley, Adobe meadow Comment
  UC76016  Erigeron pumilus var. intermedius Milo S. Baker 1894-7-1 Lassen Dixey Valley Comment
  CAS-BOT-BC300117  Erigeron pumilus var. intermedius Gary Schoolcraft 1989-6-19 1916 Lassen Ash Valley RWA/ACEC Comment
  SBBG128042  Erigeron pumilus var. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen ca. 3330 feet N of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  JEPS57071  Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-14 7995 Lassen e side, Madeline Plains, at base of foothills Madeline Plains 1615 Comment
  UCR92117  Eriogonum cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  RSA616540  Eriogonum cernuum var. cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border Comment
  CHSC14063  Eriogonum collinum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5839 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  UC1395152  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen 4.5 mi s, along U.S. Highway 395 Ravendale Comment
  RSA509426  Eriogonum douglasii G. R. Ballmer 1988-7-19 s.n. Lassen Warner Mountains, vicinity of Blue Lake 1738 Comment
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 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
  POM105623  Eriogonum elatum var. elatum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  SEINET251879  Eriogonum elatum var. villosum Leila M. Shultz, John S. Shultz 1985-6-23 8608 Lassen Long Valley Creek drainage, 5 miles north of Doyle. 1305 Comment
  UCD100069  Eriogonum fasciculatum var. polifolium Collector unknown 1919-5-1 289 Lassen Coyote Hill. Comment
  UCR90298  Eriogonum kearneyi G. R. Ballmer 1993-7-1 s.n. Lassen N end of Fort Sage Mtns 1542 Comment
  RSA125289  Eriogonum maculatum Peter H. Raven, Otto T. Solbrig 1958-6-17 13271 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  RSA176182  Eriogonum maculatum Noel Holmgren, James L. Reveal 1964-8-22 1724 Lassen 35 miles mortheast of Susanville, 18 miles south of Ravendale along U.S. 395 Comment
  UC1533147  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 0.1 mi w along Smoke Creek Road CA-NV stateline 1341 Comment
  CAS-BOT-BC267342  Eriogonum marifolium var. marifolium Clare B. Hardham 1971-8-22 18402 Lassen Diamond Mountain 2346 Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  CHSC84392  Eriogonum microthecum var. ambiguum Lowell Ahart 2003-8-17 10518 Lassen Small drainage, about 100 yards west of the cattle guard, on the southeast side of Smoke Creek Ranch Road, about 8-9 miles (air) northeast of Highway 395, about 30 miles (air) northeast of Susanville. 1450 Comment
  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
  SD64343  Eriogonum microthecum var. laxiflorum D. F. Howe 1966-8-24 Lassen 39 miles northeast of Litchfield on hwy #395 1676 Comment
  UC585235  Eriogonum microthecum var. laxiflorum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1753 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  NY803607  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-22 2949 Lassen About 3 miles northwest of Constantia, CA 1 mile west on FS Road 24N22X 1417 Comment
  UC1980557  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mile west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle. Comment
  JEPS128413  Eriogonum nudum Catherine Bauer with Ellen Bauer Benson 2017-8-16 19 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC266366  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True 1973-7-31 50020 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  SEINET530760  Eriogonum nudum var. deductum Paul Opler 2008-8-6 Lassen West of Milford, nr. Laufman Campground. Comment
  JEPS117368  Eriogonum nudum var. nudum Lowell Ahart, John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  CAS-BOT-BC269826  Eriogonum nudum var. pubiflorum John Thomas Howell 1934-7-8 12498 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC269924  Eriogonum nudum var. pubiflorum A. M. Vollmer; L. Beane 1953-7-1 30 Lassen Along Halls Flat road, beginning 6 mi. West of Susanville, to McArthur 1554 Comment
  CHSC13456  Eriogonum nudum var. pubiflorum J. Pitts 1972-6-25 272 Lassen 30 yds. e of Papoose Creek on Road 4.25, on n side of road. S of Eagle Lake 1/4 mi. Comment
  UC1032183  Eriogonum nudum var. pubiflorum H. P. Hagge 1929-9-11 17 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC1137674  Eriogonum nudum var. pubiflorum L. R. Short and Wm. Gansberg 1936-7-3 S- 474 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  UCR17292  Eriogonum nudum var. pubiflorum Frank C. Vasek 1975-7-11 750711- 40 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  POM105328  Eriogonum ochrocephalum var. ochrocephalum Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  SEINET524403  Eriogonum ochrocephalum var. ochrocephalum Paul A. Opler 2003-6-29 Lassen Quarry, 5 mi N of Hallelujah Junction, access road to west of US 295. Comment
  CAS-BOT-BC258739  Eriogonum ovalifolium var. ovalifolium John Thomas Howell 1934-7-7 12469 Lassen Pine Creek Flat Comment
  UC412810  Eriogonum ovalifolium var. ovalifolium Franklin P. Nutting Lassen Pine Creek Comment
  CHSC60839  Eriogonum ovalifolium var. purpureum Vernon H. Oswald; Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. Edge of a vernal pool in a meadow. 1719 Comment
  OBI76937  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen Natl forest. NW of intersection of 29N02Y and the "B" spur. Fredonyer Pass quad T29N R10E sec 22 SE of NE 1630 Comment
  SEINET516318  Eriogonum ovalifolium var. purpureum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the W side of Hwy. 44 ca. 1 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  CHSC45490  Eriogonum spergulinum var. reddingianum Lowell Ahart; John Thomas Howell 1974-7-9 516 Lassen Along the edge of Eagle Lake. 1584 Comment
  NY283074  Eriogonum spergulinum var. reddingianum R. F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  POM203845  Eriogonum spergulinum var. reddingianum J. T. Howell 1934-7-6 12446 Lassen Harvey Valley Comment
  RSA716265  Eriogonum sphaerocephalum L. Ahart, John Dittes 2005-6-2 11984 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Road and Highway 70; 5.8 mi. (air) northwest of Hallelujah Junction. 1431 Comment
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Jun 1 2009
  SBBG65540  Eriogonum sphaerocephalum S. W. Hutchinson -Jun-1925 858 Lassen near Susanville 1219 Comment
  CAS-BOT-BC271959  Eriogonum sphaerocephalum var. halimioides Pauleen Broyles 1977-6-1 165 Lassen Spencer Basin, 8 km n of Herlong 1770 Comment
  CHSC110769  Eriogonum sphaerocephalum var. halimioides Dean Wm. Taylor 2012-5-16 21200 b Lassen Modoc Plateau. Ca. 1 air mile S of Stanford Camp (ca. 3 air mi SSE of Big Jack Lake). 1920 Comment
  CHSC87118  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7200 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  JEPS94611  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald and Lowell Ahart 1997-5-27 8491 Lassen e side of Hwy 139 at small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  RSA702603  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2004-6-26 8142 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  CAS-BOT-BC262738  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Janesville on Highway 395 Comment
  CHSC1330  Eriogonum sphaerocephalum var. sphaerocephalum V. Holt 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  CAS-BOT-BC262742  Eriogonum strictum var. anserinum H. D. Ripley; R. C. Barneby 1944-5-30 5965 Lassen Secret Valley 1554 Comment
  CHSC106067  Eriogonum strictum var. anserinum Lowell Ahart; John Dittes 2010-7-31 16989 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  SBBG64170  Eriogonum umbellatum D. Crofton-Atkins 1931-6-7 Lassen Susanville 1310 Comment
  CAS-BOT-BC267888  Eriogonum umbellatum Hans Leschke 1957-9-21 1527 Lassen Rim of Cinder Cone Crater, Lassen Volcanic National Park 2087 Comment
  SEINET10479553  Eriogonum umbellatum Mary Susan Taylor 1974-1 Taylor 306 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC267815  Eriogonum umbellatum var. covillei G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mtn. 2316 Comment
  CHSC23499  Eriogonum umbellatum var. modocense Wayne O. Baum 1971-7-9 71 -81 Lassen N. slope of Gallatin Peak. 2072 Comment
  CHSC66395  Eriogonum umbellatum var. modocense Vernon H. Oswald; Lowell Ahart 1996-6-17 7799 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  JEPS114751  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
  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
  UCR268959  Eriogonum umbellatum var. modocense Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31429 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  RSA152682  Eriogonum umbellatum var. modocense I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16361 Lassen On ridge among volcanic boulders near NE end of Eagle Lake. Comment
  CAS-BOT-BC265095  Eriogonum umbellatum var. nevadense Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16361 Lassen Near NE end of Eagle Lake Comment
  CAS-BOT-BC265101  Eriogonum umbellatum var. nevadense Frank W. Peirson 1926-6-24 6848 Lassen A few miles southward from the Madeline Plain Comment
  RSA766453  Eriogonum ursinum C. Epling, Wm. Robinson 1935-7-17 s.n. Lassen Chaos Crags, Lassen Park Comment
  CHSC61233  Eriogonum vimineum P. V. Caldwell 1972-6-17 227 Lassen Eagle Lake B. Station. Outside and around Tom Rodgers Hall. Comment
  CHSC64888  Eriogonum vimineum Vernon H. Oswald; Lowell Ahart 1995-6-19 6882 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. On the edges and bottom of an eroded dry wash on the n side of the road. 1371 Comment
  JEPS104108  Eriogonum vimineum Lowell Ahart 2003-8-17 10516 Lassen On the w side of the paved road, on the e side of Highway 36, ca 1/4 mi sw of the Susan River, ca 8 mi (air) sw of Susanville. 1433 Comment
  JEPS56158  Eriogonum vimineum W. L. Jepson 1918-8-5 7817 Lassen Madelin Plains 1615 Comment
  NY399613  Eriogonum vimineum N. H. Holmgren 1980-7-3 9493 Lassen Rye Patch Canyon road, 3.4 km (2.1 miles) east of U.S. Highway 395, 14.5 km (9 miles) airline distance southeast of Ravendale 1700 Comment
  UC1032292  Eriogonum vimineum H. S. Yates 1936-8-11 6070 Lassen Baxter Creek Susanville Quadrangle, Baxter Creek Comment
  SDSU7202  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2.0 Miles north of Janesville. 1219 Comment
  UC86006  Eriogonum vimineum W. E. Bryant 1888-1 Lassen Comment
  POM111648  Eriophorum gracile Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  HSC28861  Eriophyllum lanatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19174 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC308137  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC308140  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen 2 miles east of Fredonyer Pass on Highway #36 1645 Comment
  UC507011  Eriophyllum lanatum var. achilleoides George A. Fischer and Irwin H. Johnson 1933-7-14 F 250 Lassen Lassen Forest 1767 Comment
  UC896366  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen on a ridge e Fredonyer Pass (on Highway #36) 1645 Comment
  UC1249275  Eriophyllum lanatum var. achilleoides Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8469 Lassen 50 mi se Susanville Comment
  UC90245  Eriophyllum lanatum var. integrifolium T. S. Brandegee 1892-7-26 Lassen Milford Comment
  UCD103215  Erodium cicutarium P. B. Schultz 1967-7-12 75 Lassen 100 feet east of highway, 1/4 mile west of Willow Creek campground, 14.9 miles southeast of Adin on State Highway 139. 1524 Comment
  SEINET8673719  Eryngium alismifolium Unknown 1958-7-22 5012 Lassen next to Highway 395 , 4.5 miles south of Ravendale Comment
  UC1587182  Eryngium alismifolium Beth Corbin 1990-7-18 588 Lassen ca. 2 mi. e. Wilson Spring (ca. 2 mi. s.w. of Little Valley, just n. of Forest Rd. 22) 1550 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
  CHSC71396  Erythranthe floribunda V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9258 Lassen Moll Reservoir in Ash Valley southeast of Adin. Along the upper edge of the reservoir. 1615 Comment
  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
  CAS-BOT-BC153610  Erythranthe moniliformis Louella Bass 1973-6-17 124 Lassen Elysian Valley Comment
  SEINET3836923 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Pratville, Clear Creek 1524 Comment
  POM252826A  Erythranthe pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mile south of Westwood. 1524 Comment
  UC1562582  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ca 10 airmi due s of, (ridge of Diamond Mts ca 1.5 mi e of Diamond Peak) Susanville; Diamond Mts. 2255 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  CHSC115563  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2015-7-13 20312 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CDA20565  Euphorbia virgata C. Pirosko 2005-7-28 PDR 1303859 Lassen Modoc Plateau; Eagle Brothers Ranch, 20 mi S of Susanville off Hwy 395. 0 Comment
  CAS-BOT-BC312106  Eurybia integrifolia Alice Eastwood 1912-8-22 1883 Lassen Morgans Springs, Lassen Butte Region Comment
  RSA0027354  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak. 2378 Comment
  POM112027  Festuca idahoensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1024694  Festuca idahoensis Leo Whitney 1933-7-10 2151 Lassen ca 25 mi w Eagle Lake (upper end); Lassen National Forest, Halls Flat 1737 Comment
  UC1024801  Festuca idahoensis Leo Whitney 1935-6-23 3294 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD65965  Festuca idahoensis Beecher Crampton 1960-6-18 5715 Lassen N. E. Lassen County: Southern Warner Mountains, 1.25 miles north of Blue Lake, in vicinity of Blue Lake Ranch area. 1981 Comment
  UCD65970  Festuca idahoensis R. Tofsrud 1947-7-1 219 Lassen East of Madeline. Comment
  UCR17280  Festuca idahoensis Frank C. Vasek 1975-7-11 750711- 31 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC278433  Festuca idahoensis Clarence R. Quick 1962-6-17 62 -30 Lassen Western Pacific RR., S. of Halls Flat, Susanville-Pittville road near Blacks Mt. Experimental Station 1706 Comment
  UCR183193  Festuca microstachys Jim Andre, G. L. Clifton 1993-5-28 7714 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  UCR244064  Festuca microstachys Jim Andre, G. L. Clifton 1993-6-9 19690 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UCD66339  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  CHSC60393  Fragaria virginiana Mary Ann Showers 1992-6-12 2521 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  SJSU6086  Frasera albicaulis var. nitida J. W. Tilden 1960-6-27 1509 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  RSA367711  Fritillaria atropurpurea Christopher Davidson 1975-6-7 2727 Lassen 2.1 mi W of Westwood on Hwy 36. 1555 Comment
  RSA59815  Fritillaria atropurpurea E. K. Balls 1950-5-19 14769 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  SEINET8478847  Fritillaria lanceolata C. G. Gulling 1905-1 1536 Lassen Big Meadows. Comment
  CHSC60698  Fritillaria pudica Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5274 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CHSC61690  Fritillaria pudica Julie L. Brown 1986-3-27 Lassen Ca. 50 m n of Eagle Lake Field Station on path to the marsh. Ca. 20 km n of Susanville. 1667 Comment
  CAS-BOT-BC506180  Fritillaria pudica E. K. Balls 1950-5-18 14768 Lassen Ash Creek, above Ash Creek Public Camp, off road from Adin to Madeline 1615 Comment
  CAS-BOT-BC508129  Fritillaria recurva Mrs. A S. Baldwin 1928-5-10 318 Lassen Coyote Flat. Over ridge from Dixie Valley Comment
  JEPS126534  Galium aparine Lowell Ahart, John Dittes 2016-6-7 21020 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  JEPS127170  Galium aparine Lowell Ahart, John Dittes 2016-7-15 21223 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC59565  Galium bifolium Mary Meyer 1980-7-20 518 Lassen On west side of Fredonyer Peak. 2377 Comment
  UC773944  Galium bifolium L. R. Short and W. Gansberg 1926-6-2 S- 368 Lassen Lassen National Forest 1850 Comment
  UC1523797  Galium multiflorum Gary Schoolcraft 1982-6-22 747 B Lassen Ft. Sage Mtns. 1767 Comment
  UC585184  Galium multiflorum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1740 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  JEPS6562  Galium trifidum var. pacificum Brown and Wieslander 1922-7-30 46 Lassen Martin Sprs. Eagle Lake Comment
  RSA0004469  Gayophytum helleri var. erosulatum W. L. Jepson 1918-8-2 7754 Lassen Beckwith Pass 1463 Comment
  HSC63969  Gayophytum humile Teresa Prendusi 1980-7-1 1121 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  POM203958  Gayophytum racemosum J. T. Howell 1934-7-7 12473 Lassen Harvey Valley. Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 Comment
  UC1122614  Gayophytum racemosum A. Simontacchi 1940-5-28 775 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC58499  Gentianopsis simplex Vernon H. Oswald 1992-7-3 5052 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. Along drainage on the upper strand of the lake. 1851 Comment
  UCD103467  Geranium oreganum L. R. Short; Wm. Gansberg 1936-6-12 S- 433 Lassen Lassen Forest, MDM, Burgess Spr. Exp. Range. 1807 Comment
  NY1101445  Geranium viscosissimum var. nervosum B. M. Bartholomew 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains. 2080 Comment
  CHSC60847  Geum triflorum Vernon H. Oswald; Lowell Ahart 1993-6-28 5603 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  CHSC89723  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  RSA702135  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1609243  Geum triflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5603 Lassen ne of Poison Lake (Road 35N04 at Aspen Well, n of Hwy 44 on the nw edge of Harvey Valley); Harvey Valley, Aspen Well 1725 Comment
  RSA122289  Geum triflorum var. ciliatum K. e. Bradshaw 1939-5-27 25210 Lassen Near S end of Black Mtn EF Plot 39-4. 1738 Comment
  UCR73831  Gilia brecciarum G. L. Webster 1989-5-13 7706 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  SEINET200250  Gilia capillaris Herbert L. Mason 1955-7-31 14643 Lassen Near Westwood Junction (railroad station 15mi west of Susanville) Comment
  SEINET11268345  Gilia inconspicua Vernon H. Oswald, Lowell Ahart 1998-5-22 9107 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle.; 0 1372 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
  UC1483794  Gilia leptomeria G. Schoolcraft 1980-5-7 220 Lassen n shore Honey Lake Island n shore of Honey Lake Island 1219 Comment
  UC1584002  Gilia lottiae G. Schoolcraft 1990-6-12 2085 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); e of Ravendale in Pine Dunes RNA 1706 Comment
  RSA0068910  Gilia minima Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  GMDRC7730  Gilia salticola J. M. Andre, G. Clifton 1993-6-1 33406 Lassen Modoc Plateau: along US Hwy 395, approx. 30 mi. NE of Susanville, north end of Secret Valley, SE end of Snowstorm Mtn, about 15 mi. SSE of Ravendale 1375 Comment
  RSA28121  Gilia salticola Elmer I. Applegate 1934-5-4 8914 Lassen South end of Secret Valley Comment
  CAS-BOT-BC283865  Glyceria borealis George W. Gillett 1957-7-26 922 Lassen Lassen Volcanic National Park. Near shore of Butte Lake 1844 Comment
  HSC95337  Glyceria borealis Gordon Leppig, J. Cromwell 1997-7-27 624 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  JEPS123845  Glyceria borealis Lowell Ahart, John Dittes 2015-7-14 20326 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  RSA126642  Glyceria borealis H. S. Yates 1936-8-12 6083 Lassen McKenzie Meadow. 1524 Comment
  CHSC113079  Gnaphalium palustre Lowell Ahart; John Dittes 2013-7-22 18861 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC29999  Gnaphalium palustre D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19276 Lassen Harvey Valley near Cone Springs Comment
  HSC82197  Gnaphalium palustre Thomas W. Nelson, Jane P. Nelson 1980-7-6 6052 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS127281  Gnaphalium palustre Lowell Ahart, John Dittes 2016-7-13 21108 Lassen About 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CAS-BOT-BC302588  Gnaphalium palustre Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amadee 1219 Comment
  UC1533164  Gratiola ebracteata G. Schoolcraft 1983-8-9 1132 Lassen along edge Moll Reservoir; along edge of Moll Reservoir 1600 Comment
  RSA772749  Gratiola heterosepala Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47210 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC64781  Grayia spinosa Vernon H. Oswald 1995-5-24 6764 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of Amedee Mtns. 1249 Comment
  UC1136436  Grayia spinosa E. Sawyer 1935-6-27 226 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UC1537382  Grayia spinosa Gordon H. True Jr. 1936-6-26 551 Lassen flats s.e. Standish; Honey Lake Valley 1219 Comment
  CHSC7652  Grindelia squarrosa Beverley J. Wise 1968-8-28 20 Lassen 1.5 mi. north on Crazy Harry Canyon Road off Hwy 36 (Las. Co. Rd. no. 230). 1584 Comment
  CAS-BOT-BC304680  Grindelia squarrosa Margaret Williams 1974-8-4 74 -L-84 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UCD98139  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CHSC118792  Hackelia amethystina L. P. Janeway; B. Castro 2017-7-2 12341 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of Skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  HSC69598  Hackelia californica Gary Schoolcraft 1980-7-15 310 Lassen W of Biebes 1799 Comment
  OBI76932  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen Natl forest. Windy Hollow. Pine Crk Valley quad. T31N R8E sec 15 SE of SW 1720 Comment
  UC1483851  Hackelia californica G. Schoolcraft 1980-7-15 310 Lassen w of Bieber; Big Valley Mountain 1798 Comment
  CAS-BOT-BC231157  Hackelia cusickii Mrs. A S. Baldwin 1927-5-19 s.n. Lassen Lava beds Comment
  UC1560394  Hackelia micrantha E. Joyal and D. Mehlman 1988-6-29 1295 Lassen Blue Lake campground Warner Mountains 1850 Comment
  CHSC25102  Halogeton glomeratus Paul Lyman 1970-5-12 19 Lassen Skeedaddle Mountain, Smoke Creek Desert, Litchfield. Found 200 yards east of Skedaddle Ranch house along Smoke Creek Spring. This area is high desert grassland and about 1/2 mi. west of Nevada Line. Comment
  UCR109608  Halogeton glomeratus T. C. Fuller 1962-8-28 9475 Lassen Adjacent to railroad tracks, Herlong Siding 1250 Comment
Read comments
Apr 14 2011
  CDA3151  Halogeton glomeratus G. Randall 1953-9-2 Lassen Amedee. 0 Comment
  UCD98889  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  CHSC12456  Hastingsia alba Robert W. Severin 1969-6-26 34 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach; 3 mi. s of E. L. B. S. 1645 Comment
  UC1553381  Helianthella californica subsp. nevadensis G. Schoolcraft 1988-7-11 1822 Lassen about 1 mi s Hwy. 44 (on road to Goumaz) 1645 Comment
  UC88867  Helianthella californica subsp. nevadensis T. S. Brandegee 1882-7-1 Lassen Susanville Comment
  CHSC7647  Helianthus annuus Beverley J. Wise 1948-8-23 21 Lassen 5 mi. N.W. of Susanville of Las. Co. Rd. 201. 1371 Comment
  UCR57493  Helianthus annuus R. D. Goeden, Don W. Ricker 1989-8-22 890822- 9 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  HSC69596  Helianthus annuus Gary Schoolcraft 1980-7-16 319 Lassen On Mud Flat on Hwy. 395 1341 Comment
  UC32278  Helianthus annuus Baker and Nutting 1894-7-2 Lassen Comment
  CDA18385  Helianthus bolanderi G. D. Barbe 1978-8-31 2424 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
  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
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  CAS-BOT-BC305785  Helianthus nuttallii Herbert L. Mason 1947-8-11 13492 Lassen Highway 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  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
  JEPS1678  Hesperochiron californicus G. S. Crew and C. S. Robinson 1927-1 10 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  UC1069088  Hesperochiron pumilus A. Simontacchi 1940-5-9 696 Lassen 4.4 mi. s.-s.e. of B.M. 7310 on Blacks Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CHSC106086  Hesperolinon micranthum Lowell Ahart; John Dittes 2010-7-31 16975 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
  JEPS17743  Hesperolinon micranthum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5416 Lassen along Smoke Creek Ranch Rd. 6 mi e jnct. with U.S. 395; Bull Flat, Deep Creek 1428 Comment
  RSA165544  Hesperolinon micranthum Clare B. Hardham 7537 Lassen Lava flows. Rte. 395 between Alturas and Susanville. 1524 Comment
  UC1609506  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
  UCD32669  Hesperostipa comata Beecher Crampton 1954-7-6 2071 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  UCR244106  Heterotheca villosa Jim Andre, G. L. Clifton 1993-6-9 19697 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  SEINET1910062  Heterotheca villosa var. minor Barbara Ertter 1987-1 7302 Lassen Lassen Co.: ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet in sagebrush zone. 1524 Comment
  UC1562822  Heuchera rubescens Barbara Ertter with Gary Schoolcraft 1987-6-16 7201 Lassen ne side Honey Lake (between Hot Springs Peak and VABM); Skeedaddle Mountains 2255 Comment
  CHSC5212  Hieracium albiflorum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  CAS-BOT-BC318711  Hieracium horridum Lemmon 1874-9-1 s.n. Lassen Shasta Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  UCR7790  Holcus lanatus Marilyn Malin 1968-7-11 261 Lassen West side of Hwy 395 on west side of Honey Lake 1280 Comment
Read comments
Sep 19 2013
  OBI75895  Holodiscus discolor var. glabrescens Anthony Baniaga 2011-8-17 506 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1850 Comment
  JEPS93830  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1998-6-4 9140 Lassen s of Constantia (Red Rock Road at its junction with Hwy 395); Red Rock Road at its junction with Hwy 395 1365 Comment
  UCD85479  Hordeum brachyantherum L. Whitney 1933-8-2 s.n. Lassen Near Slate Creek. 1889 Comment
  UC506970  Hordeum brachyantherum subsp. brachyantherum George A. Fischer and Irwin H. Johnson 1933-7-12 F 232 Lassen Patterson Flat 1737 Comment
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  UCD85684  Hordeum jubatum subsp. intermedium A. A. Beetle 1941-6-28 2808 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 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
  HSC25727  Horkelia fusca var. tenella D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19181 Lassen Harvey Valley near Cone Springs Comment
  SEINET5342517  Hornungia procumbens N. H. Holmgren, P. K. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  RSA370316  Hymenolobus procumbens A. Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10350 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  SEINET10472162  Hypericum formosum subsp. scouleri Mary Susan Taylor 1974-1 Taylor 283 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET5344266  Hypericum scouleri C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC7179  Idahoa scapigera Lynn R. Thomas 1969-4-17 101 Lassen E edge of Rice Canyon Rd., 4 mi. n of junction with 'back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  HSC69298  Idahoa scapigera Gary Schoolcraft 1980-4-8 203 Lassen E side of Schaffer Mtn., 0.25 mi. W of Hwy. 395 1463 Comment
  NY52524  Iliamna bakeri G. Schoolcraft 1983-8-22 1142 Lassen Along Ash Valley Rd. west of Madeline 1737.4 Comment
  NY52525  Iliamna bakeri G. Schoolcraft 1983-7-20 1101 Lassen SE slopes of Fredonyer[?] mtn. 2011.7 Comment
  SD61029  Iliamna bakeri Darley F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mountains; Modoc National Forest. 1829 Comment
  UCD126378  Iliamna bakeri Richard R. Halse 2004-7-8 6615 Lassen Along State Highway 139, around 6 miles north of Eagle Lake. 1710 Comment
  UC1123846  Ipomopsis aggregata A. Simontacchi 1940-7-1 884 Lassen 4.6 mi ssw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle 1889 Comment
  CHSC1230  Ipomopsis aggregata subsp. formosissima K. Chew 1954-7-7 Lassen NW end of Eagle Lake. 1615 Comment
  HSC42419  Ipomopsis congesta Barbara Kelly 1977-8-9 561 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  RSA748951  Ipomopsis congesta J. R. Shevock, Barbara Ertter 1986-7-20 11741 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles W of Madeline and U.S. Hwy 395. 1550 Comment
  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
  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
  JEPS121786  Iris missouriensis B. Castro and L. P. Janeway 2012-7-2 1936 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; large meadows along Skedaddle Creek, just upstream from Skedaddle Ranch. Comment
  UC1134718  Iris missouriensis Robert W. Gardner 1937-6-16 G- 17 Lassen Burgess Spring; Halls Flat Quad. 1699 Comment
  CDA34397  Isatis tinctoria E. Finley 1986-6-18 Lassen Near Nubieber, U.S. 299. 0 Comment
  CHSC66711  Isoetes howellii Vernon H. Oswald; Lowell Ahart 1996-8-1 8111 Lassen Mountain Meadows Reservoir SW of Westwood. NE of Indian Ole Dam. 1539 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
  CHSC30626  Iva axillaris T. M. Lane 1975-7-7 41 Lassen Along Hwy 395, 5 km nnw of Termo; 56 km s of Alturas. 1815 Comment
  UC1924201  Iva axillaris Debra Valov 2005-8-20 2005225 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1280 Comment
  RSA719895  Iva axillaris subsp. robustior Michael A. Vincent, K. Levings 2006-7-29 12908 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  UC73973  Iva axillaris subsp. robustior J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Song Valley; Honey Lake Valley Comment
  CAS-BOT-BC123376  Ivesia paniculata T. W. Nelson; J. P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 miles E of Adin. 1554 Comment
  CAS-BOT-BC148543  Ivesia paniculata James R. Shevock 1986-7-20 11740 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles west of Madeline and U.S. highway 395 - Modoc Plateau 1550 Comment
  SEINET4855366  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  CHSC30617  Juncus balticus M. A. Dubin 1975-7-20 7 Lassen Marsh 0.8 miles NE of Eagle Lake Field Station. 1569 Comment
  UC1100958  Juncus balticus Herbert L. Mason and Verne Grant 1947-7-9 13297 Lassen 5 mi e Bieber Comment
  UC648318  Juncus balticus Leo Whitney 1934-8-2 1970 Lassen Bridge Creek Camp Lassen National Forest 1737 Comment
  GMDRC7742  Juncus balticus subsp. ater J. M. Andre, G. Clifton 1993-6-11 33423 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  JEPS121288  Juncus balticus subsp. ater Lowell Ahart, John Dittes 2013-7-23 18903 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC117520  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2016-7-13 21140 Lassen Scattered along the south edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest ofk Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCR88026  Juncus confusus J. T. Howell, G. H. True 1973-8-1 50171 Lassen Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  UC1601859  Juncus ensifolius Baker and Nutting 1894-7-24 Lassen Eagle Lake Comment
  JEPS94376  Juncus hemiendytus var. hemiendytus Vernon Oswald and Lowell Ahart 1997-6-24 8653 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  SEINET3507367 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  POM111106  Juncus mexicanus Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC67714  Juncus nevadensis James D. Jokerst 1983-7-25 1899 Lassen Madeline Plains W of Termo. Comment
  UCD141628  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen Skedaddle Mountains. 1828 Comment
  JEPS117620  Juncus tenuis 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
  SBBG126190  Juncus trilocularis P. F. Zika 2008-7-14 23893 Lassen S side of St Hwy 44, SE end of Grays Valley near Lodgepole 1730 Comment
  CHSC117179  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UCD133732  Juniperus californica Grady L. Webster; with Bot. 102 class 1989-5-13 7703 Lassen Scattered in sagebrush scrub on rolling slopes 2.5 mi E of Beckworth Pass. 1493 Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  CHSC66  Juniperus occidentalis K. McKenzie 1928-4-10 Lassen Near Bieber in Big Valley. Comment
  SEINET3864782 Image available Juniperus occidentalis Maile Neel 2000-4-29 G- 1 Lassen Northern Sierra Nevada Mtns. Six miles west of Susanville on Hwy 36 at intersection with Eagle Lake Road (A1) near Eagle Ranger Station, Lassen National Forest. (Susanville 7.7'Q).; 0 1400 Comment
  UC1134311  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ene Chats; Sierraville Quad. 1569 Comment
  UC1136938  Juniperus occidentalis L. R. Short 1936-9-30 S- 508 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1828 Comment
  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
  UCR164508  Juniperus occidentalis Maile Neel 2000-4-29 G- 2 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10899767  Juniperus occidentalis Jeffrey Huber 1971-6-2 Huber 130 Lassen Approx. 30 mi N of Susanville, on Calif. Hwy 139, in basalt; Pinus-Artemesia-Juniper assoc. 1646 Comment
  SEINET10966161  Juniperus occidentalis Mary Susan Taylor 1974-5-4 Taylor 217 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
  UCR162426  Juniperus occidentalis subsp. australis David A. Charlet 1991-8-7 909 Lassen East shore of Eagle Lake 1616 Comment
  RSA302156  Juniperus occidentalis var. occidentalis J. R. Shevock 1971-4-9 943 Lassen Hwy 299 1372 Comment
  SEINET10719654  Juniperus occidentalis var. occidentalis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 132 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  UCR4289  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-8-31 650831- 05 Lassen c. 45 mi north of Susanville 1662 Comment
  SEINET5334994  Juniperus osteosperma J. T. Howell 1961-9-26 36969 Lassen East side of Beckwith Pass 1554 Comment
  CHSC23744  Kelloggia galioides M. S. Taylor 1974-7-10 273 Lassen Scattered on W side of Gallatin Beach Rd, ca. 3 mi S of Gallatin Beach on Eagle Lake, ca 12 mi NW of Susanville. 1524 Comment
  SEINET10869776  Kelloggia galioides Mary Susan Taylor 1974-1 Taylor 273 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC65307  Kochia scoparia Vernon Oswald; Lowelll Ahart 1995-8-14 7172 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  CAS-BOT-BC180803  Kochia scoparia Louella Bass 1981-7-21 s.n. Lassen Standish Comment
  UC1483844  Koeleria macrantha G. Schoolcraft 1980-7-28 335 Lassen e side Tule Mountain; e side of Tule Mtn. 2042 Comment
  UC891450  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen about a mile e of Westwood Comment
  CAS-BOT-BC341481  Lagophylla ramosissima Barrett Anderson 1986-7-9 3122 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  RSA0036999  Lamium amplexicaule Lowell A. Ahart, John Dittes 2008-6-20 14962 Lassen About 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS67993  Lappula redowskii W. L. Jepson 1918-8-2 7765 Lassen Beckwith Pass 1463 Comment
  UC864541  Lathyrus brownii A. A. Heller 1938-6-4 15147 Lassen 1 mi e Fredonyer Pass 1706 Comment
  CDA20367  Layia glandulosa D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC106679  Layia glandulosa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC5215  Layia glandulosa 1944-6-28 Lassen Eagle Lake. 1584 Comment
  CHSC64757  Layia glandulosa Vernon H. Oswald 1995-5-31 6817 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  OBI76935  Layia glandulosa Anthony Baniaga 2011-6-11 332 Lassen Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21 1623 Comment
  UCSB30244  Layia glandulosa Hardham, Clare 1961-6-16 Lassen Gold Run Creek, south of Susanville Comment
  UC2046024  Lemna trisulca Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11166 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. Comment
  JEPS407  Lemna turionifera W. L. Jepson 1918-8-16 8000 Lassen Merrillville 1524 Comment
  CDA42959  Lepidium chalepense L. 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. Comment
  CAS-BOT-BC89722  Lepidium latifolium Gary Schoolcraft 1984-7-31 1330 Lassen Along Highway 395 about 1 mile north of Ravendale Fire Station. 1615 Comment
  NY76543  Lepidium latifolium J. T. Howell 1975-7-23 51384 Lassen Eagle Lake Lumber Company yard, Susanville 1295.4 Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. 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
  CHSC99742  Lepidium perfoliatum Lowell Ahart; John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS107842  Lepidium perfoliatum Lowell Ahart, John Dittes 2005-6-2 11920 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
  UC1143000  Lepidium perfoliatum August L. Hormay 1934-5-15 Lassen nw of Black Mt.; Lassen National Forest, Forest and Range Expt. Sta. 1584 Comment
  HSC6828  Lepidium perfoliatum K. P. St. John 1965-5-6 28 Lassen Susanville, across from Walker's Restaurant Comment
  HSC79798  Lepidium perfoliatum William E. Rodstrom 1978-6-10 Lassen Behind BLM office, 705 Hull St., Susanville Comment
  SEINET10448715  Lepidium perfoliatum Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 860 Lassen Collected at the jct. Of hwy 70 & 395 at arco station. Comment
  UC1123943  Leptodactylon pungens E. Sawyer 1935-6-27 230 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  UC1137585  Leptodactylon pungens A. Simontacchi 1940-6-30 911 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quad. Comment
  CHSC68896  Leptosiphon ciliatus Vernon Oswald; Lowell Ahart 1997-6-24 8605 .1 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  CHSC60372  Leptosiphon harknessii Mary Ann Showers 1992-6-12 2518 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  CHSC59839  Leucocrinum montanum Mary Meyer 1980-5-6 Lassen Left side of Hwy 395, along barbed-wire fence, 1/4 mi from old gas station. 1615 Comment
  JEPS94470  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1997-5-27 8509 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, on small creek paralleling road on north); Forest Route 38N04 1560 Comment
  UC1609488  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  CAS-BOT-BC508365  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen Along Hwy. 139 n. of Said Valley Reservoir 1676 Comment
  HSC38587  Leucocrinum montanum J. P. Smith, J. O. Sawyer 1971-5-23 Lassen 3 mi. N of junction of Hwy. 139 and turnoff to Thermo Comment
  CAS-BOT-BC283770  Leymus cinereus John Thomas Howell 1973-7-10 49770 Lassen Near Westwood 1554 Comment
  CDA7155  Leymus cinereus G. Schoolcraft 1993-9-18 s.n. Lassen 1 mile N of Sagehen on W side of Hwy 395. Comment
  JEPS127710  Leymus cinereus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -165 Lassen Cold Spring Road N after Dorsey Butte. Comment
  JEPS68548  Leymus cinereus W. L. Jepson 1918-8-2 7795 Lassen Constantia Honey Lake Valley 1219 Comment
  RSA299613  Leymus cinereus J. T. Howell 1974-7-9 50495 Lassen Susanville; Sierra Nevada 1296 Comment
  UC1037143  Leymus cinereus Leo Whitney 3335 Lassen Camp 10 <of> Fruit Grower's Supply Company Lassen National Forest Comment
  SEINET239966 Image available Leymus triticoides G. L. Clifton 1996-6-5 34629 Lassen East of Herlong close to the railroad. 1234 Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  UCD88004  Leymus triticoides H. S. Yates 1936-8-11 6061 Lassen Near Red Rock. 1341 Comment
  RSA0035910  Lilaea scilloides Lowell A. Ahart, John Dittes 2008-6-20 14943 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1100164  Lilaea scilloides Malcolm A. Nobs and S. Galen Smith 1949-7-20 1048 Lassen Bieber; along Highway 299 Comment
  UCD116467  Limnanthes alba subsp. alba W. W. Robbins 1926-4-17 535 Lassen Grass Valley. Comment
  UC1567430  Limosella acaulis G. Schoolcraft 1989-7-24 1995 Lassen along n shore Said Valley Reservoir; n shore of Said Valley Reservoir 1630 Comment
  CAS-BOT-BC246146  Limosella aquatica Malcom A. Nobs; S. Galen Smith 1949-7-20 1046 Lassen Bieber, along Highway 299 Comment
  RSA0011457  Linanthus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46973 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 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
  UC1025087  Linanthus harknessii Leo Whitney 1934-7-5 1788 Lassen ca 15 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Crater Mountain 2225 Comment
  SEINET12249488  Linanthus harknessii Unknown 1967-1 562 Lassen 1.75 mi W of Eagle Lake Biology Station 1585 Comment
  CDA33308  Linanthus pungens F. Taylor, Agric. Comm. 1932-9-1 Lassen Beiber; near Niles Ranch 0 Comment
  CHSC80221  Linum lewisii var. lewisii Jeanne Boze 1981-6-12 110 Lassen Along road to 5 corners, 3.1 from Eagle Lake Field Station. 1737 Comment
  POM111784  Lipocarpha micrantha C. C. Bruce 1897-1 s.n. Lassen Susanville? Comment
Read comments
Jan 23 2011
  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
  CAS-BOT-BC435428  Lithophragma glabrum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49166 Lassen Elysian Valley northeast of Janesville; Sierra Nevada 1325 Comment
  SD43499  Lithophragma parviflorum Philip A. Munz 1947-5-18 11862 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville 1509 Comment
  HSC75899  Lithophragma tenellum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19163 Lassen 3 mi. N of Westwood 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
  JEPS96063  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1996-6-24 7855 Lassen 2.5 mi. s. Eagle lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow ca. 0.3 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  POM132862  Lomatium bicolor var. leptocarpum M. S. Baker 1894-07 s.n. Lassen Big Valley Comment
  RSA14394  Lomatium bicolor var. leptocarpum Elmer I. Applegate 1929-6-24 5880 Lassen Big Valley, near Bieber 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
  CHSC29900  Lomatium dissectum var. multifidum Robin Ondricek 1978-6-8 44 Lassen Ridge E of Lower Dry Lake in area between basalt and loam. 1767 Comment
  RSA0049635  Lomatium foeniculaceum subsp. macdougalii Dean Wm. Taylor 2012-6-6 21225 Lassen Vicinity Hunsinger Flat (ca. 10 miles ESE of Adin), 88 feet due E of junction of Forest Road 38N33 with Forest Road 38N04 1600 Comment
  CAS-BOT-BC211146  Lomatium grayi Mrs. C. C. Bruce 1898-6-1 2286 Lassen Madaline [Madeline] Plains Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  CHSC71065  Lomatium nevadense var. nevadense Vernon H. Oswald; Lowell Ahart 1998-5-22 9120 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CHSC29850  Lomatium nudicaule Robin Ondricek 1978-6-7 42 Lassen Lower Dry Lake along outer edges of shoreline. 1645 Comment
  CAS-BOT-BC217796  Lomatium ravenii B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6558 Lassen Just S of Ravendale 1580 Comment
  NY406056  Lomatium ravenii L. Constance 1959-6-14 3672 Lassen One mile south of Ravendale 1463.0 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
  OBI48163  Lomatium triternatum Rhonda Riggins 1989-4-27 1648 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  CHSC13733  Lomatium triternatum var. macrocarpum C. Freeman 1973-6-27 7 Lassen Collected roadside ca. 1 mi n of the road crossing. 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
  UC1187701  Lomatium vaginatum Tracey and Viola Call 1961-5-30 2049 Lassen Horse Lake Road 1/8 mi w of jct with 395 about 1 1/2 mi s Ravendale; Horse Lake Road 1463 Comment
  OBI81598  Lomatium vaginatum Tracy Call, Viola Call 1961-5-30 2047 Lassen About 2 miles south of Ravendale 1463 Comment
  OBI81601  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2052 Lassen Lassen-Modoc Co. line near highway U.S. 395. 1676 Comment
  CHSC60829  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5608 Lassen N of Hwy 44 of Harvey Rd. One (34N27) 1.5 mi NE of Aspen Well, N of Harvey Valley, NE of Poison Lake. 1761 Comment
  JEPS107457  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2005-6-2 11970 -A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  JEPS55772  Lotus purshianus var. purshianus Brown and Wieslander 1922-8-19 89 Lassen Martin Springs Eagle Lake Comment
  UC862221  Lotus purshianus var. purshianus A. A. Heller 1938-6-23 15199 Lassen slope e of Fredonyer Pass 1828 Comment
  NY716011  Lotus tenuis A. J. Cronquist 1959-6-17 8474 Lassen Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville 1311 Comment
  RSA28314  Lotus unifoliolatus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET10490461  Lupinus arbustus subsp. arbustus Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 478 Lassen Ca 3 miles s of janesville at honey lake, rest area on us hwy 395; in Sagebrush-grass margin between jeffery pine-oak forest and honey lake 1250 Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  NY732865  Lupinus arbustus subsp. calcaratus N. H. 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 1830 Comment
  UC1553386  Lupinus argenteus G. Schoolcraft 1988-8-24 1856 Lassen 16 mi e Adin; Ash Valley RNA/ACEC 1554 Comment
  UCD55156  Lupinus argenteus Ellen Dean 2006-5-15 3044 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1254 Comment
  CAS-BOT-BC196339  Lupinus argenteus var. argenteus John Thomas Howell 1934-6-10 11910 Lassen 2 miles s. of Madeline Comment
  CAS-BOT-BC208738  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21510 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CAS-BOT-BC208742  Lupinus argenteus var. heteranthus Elmer I. Applegate 1923-9-30 4032 Lassen Doyle Comment
  CAS-BOT-BC208749  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-15 8310 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC208758  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of doyle, along Hwy 395 Comment
  CAS-BOT-BC208767  Lupinus argenteus var. heteranthus Elmer I. Applegate 1923-9-30 4032 Lassen Sagebrush plains south of Money Lake, Doyle Comment
  SBBG126108  Lupinus argenteus var. heteranthus L. Ahart, J. Dittes 2010-7-31 16977 Lassen ca 100 yards NE of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  SEINET11261487  Lupinus argenteus var. heteranthus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3926 Lassen 5.5 rd miles west of jct with Hwy 395 on Dawn Dr then rd to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1899 Comment
  UC127527  Lupinus argenteus var. heteranthus J. Burtt Davy Jun 17-24, 1897 Lassen Honey Lake Valley Comment
  UC127554  Lupinus argenteus var. heteranthus Baker and Nutting 1894-7-30 Lassen near Bieber (Big Valley); , near Bieber Comment
  UC1537121  Lupinus argenteus var. heteranthus Gordon H. True Jr. 1936-6-27 556 Lassen near top Hot Spring Mountain; near top of Hot Spring Mountain 1828 Comment
  SEINET10452632  Lupinus caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  CDA43214  Lupinus caudatus subsp. caudatus Jeffery Huber 1971-6-2 145 Lassen 6 miles north of Hallelujah Junction on US Highway 295. 0 Comment
  SEINET10490715  Lupinus caudatus subsp. caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25n, r17e, se1/4, sec 8. Doyle quad. Corolla blue. In sandy sagebrush Scrub, in doyle, ca 0.5 mi. E of hwy 395. Comment
  RSA0029190  Lupinus confertus John F. Emmel 1997-6-8 1490 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  JEPS126477  Lupinus holosericeus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-28 CA 350 -068 Lassen Take 395 to Ravendale. Follow county road 527 to Buckhorn Byway. Follow for approximately 15 miles then turn right at the south end of Pilgrim Lake. Drive past two gates and through Painter's Creek. About 500 meters out of the creek on Painter's Flat. Comment
  CHSC66388  Lupinus lepidus var. confertus Vernon H. Oswald; Lowell Ahart 1996-6-17 7807 Lassen Modoc Palteau. Bizz Johnson Trail accessed at Devils Corral Trailhead loacted off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of Susan River E of Devils Corral Trailhead and W of the 6.0 mile post. 1402 Comment
  JEPS65081  Lupinus lepidus var. confertus W. L. Jepson Aug. 1918 7798 Lassen Raker Ranch near Buntingville; Raker Ranch naer Buntingville 1219 Comment
  SEINET5332986  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy 395, ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  UC527349  Lupinus lepidus var. confertus C. B. Wolf 1931-9-6 2404 Lassen on the road to Wendel 1/2 mi from Janesville (western edge of Honey Lake Valley); western edge of Honey Lake Valley 1280 Comment
  CHSC117063  Lupinus lepidus var. confertus Mary De Decker 1955-8-25 262 Lassen Honey Lake: Highway 395 Comment
  CHSC14189  Lupinus lepidus var. lobbii M. S. Taylor 1974-7-10 271 Lassen Collected roadside, ca. 3 mi s of Gallatin Beach, ca. 3 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC60355  Lupinus lepidus var. lobbii Mary Ann Showers 1992-6-27 2602 Lassen Lassen Volcanic National Park. Pumice Flat northwest of Crescent Crater. 2194 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
  JEPS28491  Lupinus lepidus var. sellulus George W. Gillett 1957-9-4 1131 Lassen intersection of Widow Lake and Snag Lake trails (Butte Lake); Lassen Volcanic National Park, Butte Lake 1859 Comment
  CHSC71085  Lupinus nevadensis Vernon H. Oswald; Lowell Ahart 1998-5-22 9113 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  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
  SEINET10486166  Lupinus polycarpus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17754 Lassen Approx 12 mi s of adin on state hwy. 139, In basalt and clay; along edge of Road on rolling knoll, in artemisia-juniper association. 1372 Comment
  SEINET10871082  Lupinus polycarpus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2576 Lassen 6 mi. S of Adin; along California Hwy. 139 right-of-way. 1372 Comment
  HSC69591  Lupinus pusillus subsp. intermontanus Gary Schoolcraft 1980-5-30 246 Lassen On S side of road into Diaz Ranch at N end of Mud Flat 1360 Comment
  HSC40685  Lupinus sellulus var. artulus Thomas W. Nelson, Jane P. Nelson 1976-8-1 3123 Lassen Lassen Volcanic National Park at Devestated Area Comment
  SEINET10485916  Lupinus sellulus var. lobbii Duane Isely, I. Isely 1971-7-12 Isely 11383 Lassen Ca 1 mi from state #44, road to bogard campground, lassen national forest (30 Mi nw of susanville). Sagebrush opening in woodlands; fugitive against rocks Or by sagebrush; arising from vertical rhizones from subterranean caudex; Corolla dull mauve; keel tip light. 1676 Comment
  RSA160041  Lupinus subvexus var. subvexus David B. Dunn 1956-7-3 11925 Lassen Along Hwy. 395, 5.5 miles So. of Likely, before dropping into valley. Comment
  SEINET10490263  Lupinus subvexus var. transmontanus David B. Dunn 1956-7-3 Dunn 11925 Lassen Collected on roadside among volcanic rocks. Along hwy 395, 5.5 mi s of likely, Before dropping into valley. Color lavender. Sagebrush common. Comment
  CHSC102882  Luzula comosa var. laxa Peter F. Zika 2008-7-14 23895 Lassen Cascade Range Highlands. E side of Route A21, NW end of Clover Valley, Susan River basin. 1800 Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  CDA40729  Lycopus uniflorus Gordon Leppig, J. Cromwell 1997-7-27 625 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC65313  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the edges of the lake and on floating bogs. 1859 Comment
  JEPS121263  Lythrum hyssopifolia Lowell Ahart, John Dittes 2013-7-23 18896 Lassen Along S margin of the levee road, about 100 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC66727  Lythrum portula Vernon H. Oswald; Lowell Ahart 1996-8-1 8104 Lassen Mountain Meadows Reservoir of Westwood. On shore of reservoir NE of Indian Ole Dam. 1539 Comment
  SEINET10872918  Machaerocarpus californicus Mary Susan Taylor 1982-6-12 Taylor 4647 Lassen T29N R10E ne/nw sec 13. Westwood quad. Aquatic in still pond on n side of West Fork of Susan River, s side of Hwy 36 at jct w/ Willow Cr Rd, 8 mi w Susanville. Comment
  UC1567356  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen intersection of Highway 139 and A2 s Adin 1341 Comment
  CAS-BOT-BC342656  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  CAS-BOT-BC343691  Madia elegans Alice Eastwood 1912-8-22 1817 Lassen Morgans Springs, Lassen Butte Region Comment
  CAS-BOT-BC344298  Madia exigua John Thomas Howell 1973-7-10 49782 Lassen Fredonyer Pass 1737 Comment
  UC469045  Madia exigua Franklin P. Nutting Lassen Dixie Valley Comment
  CAS-BOT-BC343062  Madia gracilis Clare B. Hardham 1969-8-28 17460 Lassen Slope west of Janesville Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC12436  Malacothrix Robert W. Severin 1969-6-25 19 Lassen Murrer's Upper Meadow, 2 mi es e of E.L.B.S. Near west side of meadow. 1584 Comment
  CAS-BOT-BC347438  Malacothrix floccifera Clare B. Hardham 1969-8-28 17422 Lassen Slope west of Janesville Comment
  CAS-BOT-BC347442  Malacothrix floccifera John Thomas Howell; Gordon H. True 1973-8-1 50158 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  RSA164326  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Gold Run Creek south of Susanville. Comment
  UC585134  Malacothrix glabrata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1767 Lassen ridge above Red Rock 1524 Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  JEPS88059  Marsilea vestita subsp. vestita Vernon H. Oswald and Lowell Ahart 1996-9-10 8274 Lassen sw Westwood (Mountain Meadows Reservoir, edge of reservoir between RR and Indian Ole Dam) 1539 Comment
  CHSC29877  Matricaria occidentalis Robin L. Ondricek 1978-8-26 127 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  CAS-BOT-BC348267  Matricaria occidentalis M. S. Taylor 1982-6-12 4651 Lassen In Hartson Lake Refuge, ca. 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville 1222 Comment
  SEINET10475266  Matricaria occidentalis Mary Susan Taylor 1982-6-12 Taylor 4651 Lassen 4010 ft. T28N R14E se sec 3. Standish quad. Alkali flats in Hartson Lake Refuge, 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville. 1222 Comment
  CHSC93666  Medicago lupulina Lowell Ahart; John Dittes 2005-6-2 11966 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
  RSA715988  Medicago lupulina L. Ahart, John Dittes 2005-6-2 11966 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CHSC7670  Medicago sativa Beverley J. Wise 1969-6-4 63 Lassen North edge of Milford on Hwy 395. 1249 Comment
  UC1024833  Melica bulbosa Leo Whitney 1935-6-11 3226 Lassen Fruit Grower's Supply Company, Camp 10; Lassen National Forest Comment
  UCD86363  Melica bulbosa B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CAS-BOT-BC281027  Melica stricta Clare B. Hardham 1969-8-28 s.n. Lassen W of Janesville Comment
  CHSC112987  Melilotus officinalis Lowell Ahart; John Dittes 2013-7-22 18868 Lassen On the sides of the levee road, about 100 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC105237  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC106683  Mentzelia albicaulis B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 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
  CHSC71128  Mentzelia albicaulis Vernon H. Oswald 1998-5-22 9137 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  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
  CHSC66392  Mentzelia dispersa Vernon H. Oswald; Lowell Ahart 1996-6-17 7772 Lassen Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants in dry soil on the edge of the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  JEPS127346  Mentzelia dispersa Lowell Ahart, John Dittes 2016-7-13 21124 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  RSA32753  Mentzelia dispersa A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. 1524 Comment
  UC872458  Mentzelia dispersa C. L. Hitchcock 1940-5-26 6606 Lassen ca 12 m n Fall River Mills (Shasta Co.) (lava beds, On Fall River) 1371 Comment
  JEPS88213  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1996-6-17 7772 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville 1432 Comment
  JEPS124811 Image available Mentzelia laevicaulis J. Yamanaka 1965-7-12 120 Lassen Highway 395, 15 miles N. of junction of Calif. 104 US 395. Comment
  CHSC27075  Menyanthes trifoliata Robert A. Schlising 1978-8-1 3332 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  CAS-BOT-BC231081  Mertensia oblongifolia Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-14 86- 39 -1 Lassen 1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale 1706 Comment
  CHSC61178  Micranthes aprica Vernon H. Oswald; Lowell Ahart 1993-5-12 5373 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in the forest. 1737 Comment
  CAS-BOT-BC429080  Micranthes odontoloma George W. Gillett 1957-7-22 886 Lassen Lassen Volcanic National Park. Snag Lake. Near campsite at south end of Lake. 1850 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
  CHSC99301  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15036 Lassen About 220 yards west of the road levee, open dry 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
  UC1136773  Microseris laciniata subsp. laciniata George A. Fischer and Irwin H. Johnson 1933-7-12 F- 195 Lassen Grass Valley (Dry Lake) Lassen National Forest 1694 Comment
  CHSC99143  Microseris nutans Lowell Ahart; John Dittes 2008-6-19 14871 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
  UC1070116  Microseris nutans Robert W. Gardner 1937-6-16 G- 14 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  UC773918  Microseris nutans L. R. Short 1936-6-1 S- 353 Lassen Burgess Spring Experiment Range Lassen Forest 1859 Comment
  CAS-BOT-BC349296  Microseris nutans Parkison 1916-6-21 41 -a Lassen Lassen National Forest. Meadow Border, Patterson Camp 1706 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
  CHSC60415  Mimulus breweri Mary Ann Showers 1992-6-13 2551 Lassen Shorline at western end of Widow Lake. Lassen Volcanic National Park. 2072 Comment
  RSA252826B  Mimulus floribundus A. A. Heller 1938-6-22 15187 Lassen 1 mile south of Westwood. 1524 Comment
  JEPS2648 Image available Mimulus jepsonii W. L. Jepson 1910-6-10 4112 Lassen Twin Lakes (Grassy Lake); ; Twin Lakes (Grassy Lake), Lassen Co. 2225 Comment
  JEPS10491  Mimulus microphyllus Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  JEPS11447  Mimulus microphyllus Brown and Wieslander 1922-7-30 39 Lassen Martin Springs Eagle Lake Comment
  POM43476  Mimulus moschatus var. longiflorus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  SEINET10830517  Mimulus nanus Mary Susan Taylor 1974-1 Taylor 311 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UCD149990  Mimulus nanus var. mephiticus William Anderson 1963-6-9 s.n. Lassen Honey Lake Valley. Comment
  UCD94000  Mimulus nanus var. mephiticus Dena Grossenbacher; Joel Smith 2008-6-25 893 Lassen Along Forest Service Road 29N43 approximately 1 mile east of junction with Gold Run Road. 1682 Comment
  HSC81185  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1025076  Mimulus primuloides Leo Whitney 1933-8-14 1595 Lassen meadow near Slate Creek (ca 8 mi nw of Eagle Lake); Lassen National Forest 1920 Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  UC886329  Mimulus pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen lava beds ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  JEPS88207  Mimulus pulsiferae Vernon H. Oswald and Lowell Ahart 1996-6-24 7865 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake; Modoc Plateau, Montane Meadow in Yellow Pine Forest. On the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  RSA536393  Mimulus pygmaeus Rick Crowther 1991-5-28 s.n. Lassen Swains Hole Reservoir, 3 miles N of Hwy 44 off USGS Road 33N18. 1619 Comment
  JEPS19730  Mimulus suksdorfii Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5990 Lassen 7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Rail Road, just e of U.S. Highway 395); on Southern Pacific Rail Road 1676 Comment
  JEPS94112  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1998-5-22 9123 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  UCD150408  Mirabilis laevis var. retrorsa William Anderson 1963-6-23 s.n. Lassen Wendel. Comment
  SEINET10498937  Monardella odoratissima Mary Susan Taylor 1974-1 Taylor 275 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC111253  Monardella odoratissima subsp. glauca L. P. Janeway; B. Castro 2012-7-2 10933 Lassen Modoc Plateau. Along Skedaddle Ranch Road 6.4 road km north of Skedaddle Creek at an unnamed tributary of Bull Creek. 1533 Comment
  LA54200  Monardella odoratissima subsp. glauca John Thomas Howell; 1934-6-10 11888 Lassen 12 mi. N of Susanville on rd to Horse Lake Comment
  RSA122018  Monardella odoratissima subsp. glauca L. R. Short, Wm Gansberg 1936-7-3 S- 467 Lassen MDM, Burgess Spr. Exp. Range. 1849 Comment
  RSA505703  Monardella odoratissima subsp. glauca G. H. True 1938-7-14 961 Lassen Milford Grade, just noth of summit. 1768 Comment
  CHSC118842  Monardella odoratissima subsp. pallida L. P. Janeway; B. Castro 2017-7-2 12340 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  HSC14276  Monardella odoratissima subsp. pallida M. T. Milligan 1964-7-16 133 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  HSC14280  Monardella villosa D. E. Anderson 1963-8-25 2800 Lassen 3 mi. N of Cromberg along Hwy. Alt 40 1372 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
  HSC81781  Monolepis nuttalliana Thomas W. Nelson, Jane Nelson 1980-7-6 6013 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 Comment
  UC1567380  Monolepis nuttalliana G. Schoolcraft 1989-5-16 1879 Lassen w. of Hwy. 395 Secret Valley 1347 Comment
  POM203792  Monolepis pusilla J. T. Howell 1934-6-10 11895 Lassen Horse Lake Comment
  UC1533152  Montia chamissoi G. Schoolcraft 1986-5-20 1578 Lassen about 4 mi n of Horse Lake 1630 Comment
  UC1609468  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
  UC1586593  Montia dichotoma Vernon H. Oswald 1991-5-28 4618 Lassen 5 mi ne of Bieber (Wayman Barn at the w end of Hunt Road, Ash Creek Wildlife Area, flat east of barn); Ash Creek Wildlife Area 1264 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
  JEPS120896  Montia linearis Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18736 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
  UC1101599  Muhlenbergia asperifolia Malcolm A. Nobs and S. Galen Smith 1949-8-20 1480 Lassen marshy banks of creek 1 mi n Doyle; Honey Lake Valley, Long Creek 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
  UC188911  Muhlenbergia asperifolia Milo S. Baker Lassen Eagle Lake Comment
  UCD86562  Muhlenbergia asperifolia R. Tofsrud 1947-7-1 227 Lassen Between Johnstonville and Standish. Comment
  UC589840  Muhlenbergia filiformis H. S. Yates 1936-8-12 6081 Lassen McKenzie Meadow Susanville Quadrangle 1524 Comment
  RSA256304  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6237 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  SD109577  Muhlenbergia jonesii John R. Reeder, Charlotte G. Reeder 1972-7-24 5809 Lassen 22 miles NW of Susanville in vicinity of Silver Lake, along State Hwy. 44, Lassen National Forest 1707 Comment
  JEPS28263  Muhlenbergia richardsonis George W. Gillett 1957-7-22 871 Lassen s shore of lake Lassen Volcanic National Park, Snag Lake (margin of gravel bars) 1850 Comment
  POM114433  Muhlenbergia richardsonis Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  SJSU4296  Muhlenbergia richardsonis J. W. Tilden 1960-6-27 1511 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  CAS-BOT-BC275156  Muhlenbergia richardsonis George W. Gillett 1957-7-22 871 Lassen Lassen Volcanic National Park. Snag Lake, S shore 1850 Comment
  CHSC7657  Muilla transmontana Beverley J. Wise 1969-5-3 145 Lassen 4.7 mi. east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1615 Comment
  CHSC91312  Myosotis discolor Lowell Ahart; John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC1951072  Myosurus apetalus Debra Valov 2009-4-26 2009019 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UCD55284  Myosurus apetalus Ellen Dean; Gary Schoolcraft 2006-5-16 3103 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  NY492693  Myosurus minimus P. H. Raven 1958-6-17 13285 Lassen Along U. S. Highway 395, 1.9 miles south of Ravendale Comment
  UC1584005  Myosurus minimus G. Schoolcraft 1990-5-16 2055 Lassen just e Third Butte 1267 Comment
  UC9325  Myosurus minimus M. S. Baker and Frank Nutting 1894-7-1 Lassen w side Dixey Mts Comment
  UC1101499  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
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Aug 12 2008
  CDA36310  Myriophyllum sibiricum J. R. Keck Jr., D. L. Haws 1978-9-6 PDR# 330036 Lassen Eagle Lake; at the public boat ramp at Spaulding Resort. 0 Comment
  UC1101501  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-9-7 8398 Lassen Susan River by Highway 395 at Bridge 7-34, 1/2 mi W of Litchfield. Comment
  UCD102560  Myriophyllum sibiricum G. Schoolcraft 1996-9-11 2565 Lassen Willow Creek. 1310 Comment
  CHSC65036  Nama aretioides var. californica Vernon H. Oswald; Lowell Ahart 1995-7-5 6955 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy 395. 1383 Comment
  RSA0043136  Nama aretioides var. californica Christopher Davidson 1975-6-7 2760 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS79141  Nama aretioides var. multiflora L. R. Heckard with R. Bacigalupi 1980-6-11 5243 Lassen 11.3 mi n Litchfield (along U.S. 395 s of Deep Creek crossing); s of Deep Creek crossing, n of Litchfield 1463 Comment
  UC133072  Nama aretioides var. multiflora Dr. Gustav Eisen 1891-1 Lassen Honey Lake Comment
  CDA40304  Nama aretioides var. multiflora S. E. Piper 1943-7-2 s.n. Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC91324  Nama densa var. densa Lowell Ahart; John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction. 1461 Comment
  SEINET7878178 Image available Nama lobbii Annetta Carter 1946-1 s.n. Lassen Altitude ca. 5500 feet; crest of ridge ten miles northeast of Susanville, Lassen County. 1676 Comment
  SD3921  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CDA40081  Navarretia breweri T. C. Fuller 1963-6-11 10658 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  NY1012730  Navarretia breweri D. W. McNeal 1978-5-30 2126 Lassen Beside Highway #395, 11.2 miles south of Ravendale Comment
  CHSC4887  Navarretia capillaris Bill Wilson 1967-7-5 41 Lassen Collected at Eagle Lake Biological Station. 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  CHSC117294  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2016-7-13 21131 Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC112979  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2013-7-22 18853 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS69637  Navarretia leptalea subsp. leptalea Brown and Wieslander 1922-8-20 86 Lassen Martin Sprs. Eagle Lake Comment
  CAS-BOT-BC230387  Navarretia leucocephala subsp. minima James Jokerst 1983-7-24 1882 Lassen Near Madeline Plains 1614 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
  JEPS127174  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2016-7-15 21213 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC23681  Navarretia leucocephala subsp. minima J. Burtt Davy Jun 17 1897-Jun 24 1897 3362 Lassen Honey Lake Valley Comment
  HSC96700  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1986-6-24 8183 Lassen Along SR 395 58.9 mi. N of jct. with SR 36 Comment
  CHSC60840  Navarretia linearifolia subsp. linearifolia Vernon H. Oswald; Lowell Ahart 1993-6-28 5616 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In woods along the road. 1798 Comment
  CHSC110778  Navarretia sinistra subsp. sinistra Dean Wm. Taylor 2012-7-18 21281 Lassen Cascade Ranges. Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  JEPS107402  Nemophila parviflora var. austiniae Lowell Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  RSA122626  Nemophila parviflora var. austiniae L. R. Short, J. Warren 1936-6-9 S- 404 Lassen Burgess Spring Experiment Range. 1845 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
  CAS-BOT-BC349855  Nestotus stenophyllus Alice Eastwood; John Thomas Howell 1940-6-15 8314 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC106075  Nicotiana attenuata Lowell Ahart; John Dittes 2010-7-31 17022 Lassen On the north side of the road, about 40 yards west 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
  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
  POM103204  Nitrophila occidentalis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CDA18261  Nothocalais alpestris G. D. Barbe 1974-8-2 1923 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS94115  Nothocalais troximoides Vernon H. Oswald and Lowell Ahart 1998-5-22 9097 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
  UC635505  Nuphar lutea subsp. polysepala Dorothy Tebbe 1929-7-30 132 Lassen in a pond near Lake Almanor Comment
  UC8805  Nuphar lutea subsp. polysepala J. Burtt Davy Jun 17 1897-Jun 24 1897 3336 Lassen Honey Lake Valley, deep pools of Susan River Susan River; Honey Lake Valley, Susan River Comment
  CDA20352  Oenothera alyssoides var. villosa D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  SEINET10453107  Oenothera deltoides Mary Susan Taylor 1982-6-12 Taylor 4652 Lassen T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft. 1280 Comment
  CHSC36283  Oenothera deltoides subsp. piperi M. S. Taylor 1982-6-12 4652 Lassen Both sides of Hwy 395, ca. 1 mi n of Milford. 1280 Comment
  UC1122216  Oenothera deltoides subsp. piperi E. Sawyer 1935-6-27 231 Lassen Long Valley Sierraville Quadrangle Comment
  SEINET10491874  Oenothera deltoides subsp. piperi Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 477 Lassen Approx 3 mi s of hanesville at honey lake, rest area on us hwy 395; in sagebrush-grass margin between jeffery pine oak forest and honey lake. 1250 Comment
  NY998639  Oenothera deltoides var. piperi W. W. Eggleston 1911-5-29 6745 Lassen Vicinity of Doyle Station 393 Comment
  CHSC4767  Oenothera elata subsp. hirsutissima R. Carter 1967-7-16 621 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side of rd. Comment
  RSA8247  Oenothera flava Elmer I. Applegate 1929-6-24 5881 Lassen Big Valley south of Bieber Comment
  CHSC29938  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 71 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  CAS-BOT-BC349945  Onopordum acanthium O. Havens 1963-8-9 s.n. Lassen P. S. Hall ranch, Doyle Comment
  CAS-BOT-BC350042  Oreostemma alpigenum var. andersonii Hans Leschke 1958-9-30 1571 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  CHSC66716  Oreostemma alpigenum var. andersonii Vernon H. Oswald; Lowell Ahart 1996-8-1 8121 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of West-wood. 1737 Comment
  JEPS88402  Oreostemma alpigenum var. andersonii Vernon H. Oswald and Lowell Ahart 1996-8-1 8121 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi n Dyer Mtn. Lookout (ssw of Westwood) 1737 Comment
  HSC93438  Oreostemma elatum Vernon H. Oswald 1996-8-1 8120 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  RSA0011497  Orobanche Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46972 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CDA42001  Orobanche corymbosa T. C. Fuller 1980-8-5 20313 Lassen Along east side of Tuledad Road, 7.4 km. southeast of the campground on the east shore of Dodge Reservoir, northeast of Ravendale. 0 Comment
  JEPS103166  Orobanche corymbosa Beth Corbin 2002-7-10 1087 Lassen Madeline Plains, 5 air mi N of top of Observation Peak. 1627 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
  UCR244039  Orobanche fasciculata Jim Andre 1993-6-1 19709 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC499906  Orobanche fasciculata Clare B. Hardham no date on label; det'd 1980. s.n. Lassen Sierra Nevada: Gold Rush Creek, S of Susanville Comment
  CAS-BOT-BC502937  Orobanche uniflora G. Schoolcraft 1999-4-21 2813 Lassen On E. Bald Mtn about 10 mi SE of Susanville 1341 Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  RSA165526  Orthocarpus hispidus Clare B. Hardham 1961-6-17 7501 Lassen Baxter Creek S of Susanville. Comment
  UCD39135  Orthocarpus luteus Beecher Crampton 1964-6-26 7085 Lassen 35 miles n.w. Susanville, Gray's Valley, 3 miles north Bogard Ranger Station. Comment
  RSA0089259  Orthocarpus purpurascens Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  POM105807  Oxytheca dendroidea Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  RSA78899  Oxytheca dendroidea E. K. Balls, Percy C. Everett 1952-10-10 18140 Lassen 5.5 miles NE of Litchfield, Hwy 395, between Susanville and Alturas 1280 Comment
  UC125352  Oxytheca dendroidea subsp. dendroidea T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  HSC63731  Packera cana Teresa Prendusi 1980-7-14 1118 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  CHSC5217  Packera multilobata A. Santos 1946-6-17 Lassen Eagle Lake. Mr. Fredonyer Rd. 2072 Comment
  HSC18106  Paeonia H. E. Parks, S. T. Parks Jun 1928 223 Lassen Lassen National Park, Drakesbad 1768 Comment
  HSC26234  Paeonia brownii D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19260 Lassen Harvey Valley near Cone Springs 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
  CHSC93670  Panicum capillare Lowell Ahart; John Dittes 2005-6-2 11973 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
  SEINET3133156  Panicum lanuginosum var. fasciculatum R. W. Spellenberg 1965-7-15 1229 Lassen Lassen Volcanic NP, Devil's Kitchen Comment
  SEINET10456342  Pectocarya penicillata David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17750 Lassen 3 mi. S of Hallelujah Jct, on US Hwy 395, jct of US 395 & CA 70. Comment
  OBI75871  Pedicularis groenlandica Anthony Baniaga 2011-8-9 494 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  SEINET3836472 Image available Pedicularis semibarbata Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Susanville, Perkin's Ranch 1829 Comment
  RSA121814  Pedicularis semibarbata G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 272 Lassen Lassen Forest. 1738 Comment
  UC62506  Pellaea Baker and Nutting 1894-5-25 Lassen Pine Creek Comment
  UC153407  Penstemon cinicola Milo S. Baker Aug 1894 152 Lassen Pine Creek Comment
  JEPS11227  Penstemon deustus var. pedicellatus Jos. Grinnell 1928-6-18 Lassen Eagle Lake 1584 Comment
  CHSC57205  Penstemon gracilentus Mary Meyer 1980-7-23 Lassen Along Cleghorn Creek. 1645 Comment
  JEPS94557  Penstemon gracilentus Vernon Oswald and Lowell Ahart 1997-6-24 8598 Lassen s of Susanville (on n side of Dianmond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Dianmond Mountain, Forest Road 29N43 1685 Comment
  NY600703  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen East slope of Tule Mountains 1770 Comment
  SEINET10917288  Penstemon gracilentus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1900 Comment
  CHSC60419  Penstemon heterodoxus var. shastensis Mary Ann Showers 1992-6-12 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  UC584356  Penstemon janishiae G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2282 Lassen summit and e slope Diamond Mt. 2194 Comment
  JEPS11208  Penstemon neotericus Brown and Wieslander 1922-7-23 9 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  SBBG28836  Penstemon neotericus A. A. Heller 1939-7-28 15294 Lassen W of Westwood 1524 Comment
  NY627251  Penstemon neotericus K. A. Vincent 1986-7-19 4381 Lassen Sierra Nevada, Roop Mountain; along CA A1 ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  NY627256  Penstemon neotericus K. A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mountain; along CA A1, ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  NY627261  Penstemon neotericus F. W. Pennell 1940-7-23 26248 Lassen Route 36, 3 miles northwest of Westwood 1585.0 Comment
  SEINET10744553  Penstemon newberryi var. newberryi Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 843 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10. T31N R7E S35 NW 1/4. 1980 Comment
  CHSC118789  Penstemon roezlii L. P. Janeway; B. Castro 2015-6-5 11757 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
  CHSC60859  Penstemon roezlii Vernon H. Oswald; Lowell Ahart 1993-6-28 5618 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  NY650094  Penstemon roezlii N. H. Holmgren 1978-6-11 8920 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
  NY650115  Penstemon roezlii F. W. Pennell 1940-6-9 25755 Lassen Route 395, 5 miles north of Madeline 1676.4 Comment
  UC1520673  Penstemon roezlii Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9523 Lassen 24 km (15 mi) airline distance se Ravendale (21.9 km (13.6 mi) from U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1580 Comment
  UC585179  Penstemon roezlii E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1764 Lassen summit of ridge e Red Rock; e of Red Rock 1828 Comment
  SEINET5323614 Image available Penstemon rydbergii N. H. Holmgren, P. K. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CAS-BOT-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-BC239511  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219 Comment
  CHSC116103  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2015-7-13 20316 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC30576  Penstemon rydbergii var. oreocharis Sori H. Shad 1970-7-9 41 Lassen North east edge of Meadow. 1584 Comment
  CHSC93700  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2005-6-2 11988 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
  JEPS11475  Penstemon rydbergii var. oreocharis Brown and Wieslander 1922-7-18 50 Lassen Eagle Lake , Eagle Lake (Martin Sprs) Comment
  JEPS124372  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2015-7-13 20316 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  NY651252  Penstemon rydbergii var. oreocharis G. Schoolcraft 1985-6-12 1418 Lassen Edge of Grasshopper Valley, at south end. 1615.4 Comment
  UCD39133  Penstemon rydbergii var. oreocharis Beecher Crampton 1964-6-26 7081 Lassen 32 miles n.w. Susanville east end of Harvey Valley. 1694 Comment
  CAS-BOT-BC239509  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen One mile east of Westwood 1524 Comment
  CHSC25148  Penstemon speciosus L. E. Ray 1967-6-24 52 Lassen Collected ca. 8 miles s ELBS, Deans Meadow. 1950 Comment
  JEPS29738  Penstemon speciosus Rimo Bacigalupi and L. R. Heckard 1962-5-28 8493 Lassen along U.S. highway 395, 10 mi s Milford; s of Milford 1219 Comment
  SBBG26872  Penstemon speciosus D. D. Keck 1930-7-23 50 Lassen Susanville 1280 Comment
  UC1142999  Penstemon speciosus August L. Hormay 1934-6-30 Lassen Harvey Valley Lassen National Forest 1615 Comment
  UC1527430  Penstemon speciosus Gordon H. True Jr. 1936-6-25 529 Lassen e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station 1767 Comment
  UC423512  Penstemon speciosus David D. Keck 1930-7-23 947 Lassen Reno Junction Sierra Nevada, Reno Junction (southeastern Lassen County) 1493 Comment
  NY660819  Penstemon speciosus subsp. speciosus F. D. Payne 1929-7-12 86 Lassen Ridge above Lost Lake, southern end of the Warner Range. 2286.0 Comment
  NY661061  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 950 Lassen Susanville 1280.2 Comment
  CAS-BOT-BC239659  Penstemon sudans G. Schoolcraft 1996-7-15 2534 Lassen About 2 miles n. of Susanville 1371 Comment
  CAS-BOT-BC239660  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen 2 miles east of Fredonyer Pass 1645 Comment
  JEPS109636  Penstemon sudans Dean W. Taylor 2002-6-21 18167 Lassen Highway 139 about 4 miles North from Lassen College (ca. 5 miles N of Susanville) 1478 Comment
  JEPS94561  Penstemon sudans Vernon Oswald and Lowell Ahart 1997-6-24 8599 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 Comment
  NY661796  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass 1615.4 Comment
  NY661798  Penstemon sudans F. W. Pennell 1940-6-9 25768 Lassen Route 36. Hill, west of Susanville 1371.6 Comment
  NY661801  Penstemon sudans D. D. Keck 1930-7-23 948 Lassen Susanville 1280.2 Comment
  NY661806  Penstemon sudans J. T. Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432.6 Comment
Read comments
Apr 21 2013
  NY661808  Penstemon sudans D. D. Keck 1935-6-25 3756 Lassen Susanville; just west of town Comment
  UC1012184  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36 hill w Susanville; hill w of Susanville 1371 Comment
  UC169110  Penstemon sudans Marcus E. Jones 1897-6-24 Lassen 10-15 mi w Amedee; ; W from Amedee 1219 Comment
  UC27436  Penstemon sudans J. Burtt Davy Jun 17 1897-Jun 24 1897 3401 Lassen Willow Creek , Willow Creek (Honey Lake Valley) Comment
  CHSC7723  Peraphyllum ramosissimum Beverley J. Wise 1969-5-4 193 Lassen 1.5 mi. west of Shaeffer Mtn lookout access road off Hwy 395 (approx. 1 mi. south of Las Co. 338). 1676 Comment
  HSC100162  Peraphyllum ramosissimum J. P. Smith, & J. O. Sawyer 2011-8-14 13377 Lassen Along service road, 1.8 mi. from Hwy. 395. 1541 Comment
  CHSC105250  Perideridia kelloggii Lowell Ahart; John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC29870  Perideridia oregana Robin L. Ondricek 1978-7-15 103 Lassen .6 mi e of jct. with main road to ELFS on road to Murrers Upper Meadow. 1554 Comment
  CAS-BOT-BC222762  Perideridia parishii Clare B. Hardham 1971-8-22 18397 A Lassen Diamond Mountain 2133 Comment
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  JEPS12408  Perideridia parishii subsp. latifolia Brown and Wieslander 1922-7-30 15 Lassen Martin Sprs. Eagle Lake Comment
  CHSC6232  Persicaria 1945-7-1 Lassen Eagle Lake. 1554 Comment
  OBI77201  Persicaria amphibia Anthony Baniaga 2011-7-23 517 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1707 Comment
  CHSC25307  Phacelia adenophora Pauleen Broyles 1977-6-1 154 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 cm ne of Herlong. 1660 Comment
  JEPS1608  Phacelia adenophora Mrs. C. C. Bruce June 1898 2198 Lassen Madeline Plains Comment
  JEPS95723  Phacelia adenophora Vernon H. Oswald and L. Ahart 1995-6-19 6884 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395 1371 Comment
  OBI48096  Phacelia adenophora Rhonda Riggins 1989-4-27 1643 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  UC1537547  Phacelia adenophora Gordon H. True Jr. 1938-7-8 905 Lassen near Termo 1371 Comment
  RSA715550  Phacelia bicolor L. Ahart, John Dittes 2005-6-1 11886 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  CHSC71089  Phacelia bicolor var. bicolor Vernon H. Oswald; Lowell Ahart 1998-5-22 9132 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  UC24403  Phacelia hastata subsp. compacta J. Burtt Davy Jun 17 1897-Jun 24 1897 3407 Lassen Chat Honey Lake Valley, Long Valley Comment
  NY1057241  Phacelia heterophylla N. H. Holmgren 1980-7-4 9503 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  RSA122631  Phacelia heterophylla subsp. virgata L. R. Short 1936-6-30 S- 463 Lassen Burgess Spr. Exp. Range. 1817 Comment
  CHSC4910  Phacelia humilis A. E. Anderson 1967-6-23 5 Lassen Around Eagle Lake Biological Station. 1554 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
  NY1057845  Phacelia humilis B. J. Ertter 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  UC1259992  Phacelia humilis Jeffrey Huber 1971-6-2 111 Lassen on CA Hwy 139 approx. 30 mi n Susanville 1645 Comment
  UC24377  Phacelia humilis Mrs. C. C. Bruce June 1898 2191 Lassen Susanville Antelope hills Comment
  CHSC68891  Phacelia humilis var. humilis Vernon H. Oswald; Lowell Ahart 1997-6-24 8620 Lassen South of susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. 2036 Comment
  RSA201834  Phacelia humilis var. humilis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake, Warner Mountains, Modoc National Forest, northeastern part of the county (ca. 18 miles airline southeast of Likely). 1905 Comment
  CHSC67059  Phacelia linearis Willis Ball 1969-6-28 55 Lassen Found on E.L.B.S. in dry basaltic soil. 1554 Comment
  JEPS94481  Phacelia linearis Vernon H. Oswald and Lowell Ahart 1997-5-27 8526 Lassen 4.9 mi ne of Highway 139 (Coyote Flat on Forest Route 38N04); Coyote Flat on Forest Route 38N04 1813 Comment
  NY1056434  Phacelia lutea var. glandulifera N. H. Holmgren 1980-7-3 9473 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  JEPS17909  Phacelia procera Rimo Bacigalupi with G. T. Robbins 1955-7-21 5433 Lassen along upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Cr. 1767 Comment
  UC107462  Phacelia racemosa Mrs. R. M. Austin 1879-1 Lassen Eagle Lake Comment
  CHSC23109  Phacelia ramosissima Robert A. Schlising 1974-6-25 3149 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station; basaltic rocks from Black Mt. lava flow near Bly Tunnel. Comment
  CHSC29886  Phacelia ramosissima var. eremophila Robin L. Ondricek 1978-8-2 109 Lassen In moss covered basalt on top of the ridge se of ELFS. 1609 Comment
  UC1483880  Phacelia ramosissima var. eremophila G. Schoolcraft 1979-6-26 94 Lassen on dunes located off Marr Road 1706 Comment
  SEINET3091893 Image available Phacelia tetramera Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  NY1057983  Phacelia thermalis H. D. D. Ripley 1943-6-15 5761 Lassen Along Smoke Creek northeast of Viewland 1311 Comment
  RSA74152  Phacelia thermalis J. T. Howell 1934-6-16 12222 Lassen Bieber Comment
  UCD88538  Phalaris arundinacea R. Tofsrud 1951-7-13 s.n. Lassen Near Susanville. Comment
  SJSU5104  Phleum pratense H. L. Buckalew 1961-7-9 Lassen near lake shore, Blue Lake, Warner Mts 1828 Comment
  UCD89650  Phleum pratense L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  JEPS94530  Phlox diffusa Vernon Oswald and Lowell Ahart 1997-6-24 8638 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
  RSA122928  Phlox diffusa subsp. diffusa L. R. Short 1936-4-28 S- 332 Lassen Lassen National Forest, Burgess Spring Experimental Range 1738 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
  UC1124221  Phlox gracilis A. Simontacchi 1940-5-10 690 Lassen 7.3 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC773891  Phlox gracilis L. R. Short and Wm. Gansberg 1936-6-2 S- 363 Lassen Burgess Spring Experimental Range Lassen Forest 1859 Comment
  CHSC1306  Phlox speciosa subsp. occidentalis M. Anthony 1953-4-27 Lassen Susanville. 1280 Comment
  POM74317  Phlox speciosa subsp. occidentalis Marcus E. Jones 1897-6-26 10522 Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC106569  Phlox stansburyi K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  CHSC106668  Phlox stansburyi B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC7764  Phlox stansburyi Beverley J. Wise 1969-4-10 93 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  CHSC91334  Phlox stansburyi Lowell Ahart; John Dittes 2005-6-1 11846 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UCD118472  Phlox stansburyi var. brevifolia Grady L. Webster 1989-5-13 7716 Lassen 2.5 mi E of Beckworth Pass. 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
  CHSC60669  Phoenicaulis cheiranthoides Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5272 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  UC1136913  Phoenicaulis cheiranthoides L. R. Short 1936-4-28 S 335 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1737 Comment
  SEINET7295530 Image available Phragmites John Thomas Howell 1975-1 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia. Comment
  UC769862  Phragmites australis R. F. Hoover 1940-10-11 4682 Lassen s Doyle; Long Valley 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
  CDA601  Pinus washoensis Gordon Leppig, Sylvia Leppig and Juli & Kai Neander 1998-8-18 1065 Lassen Modoc National Forest, Blue Lake Campground Comment
  POM73008  Plagiobothrys Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UCR201593  Plagiobothrys Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  CHSC60332  Plagiobothrys cognatus Mary Ann Showers 1992-6-13 2547 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  JEPS28648  Plagiobothrys cognatus George W. Gillett 1957-7-22 873 Lassen Snag Lake Lassen Volcanic National Park (near inlet at s end of lake) 1850 Comment
  SJSU8053  Plagiobothrys cognatus R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline Comment
  CHSC99538  Plagiobothrys cusickii Lowell Ahart; John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SBBG128883  Plagiobothrys cusickii L. Ahart, J. Dittes 2008-6-20 14914 Lassen vernal pool, ca. 100 yards SW of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CAS-BOT-BC224977  Plagiobothrys hispidulus Peter H. Raven; Otto T. Solbrig 1958-6-17 13286 Lassen Along US Highway 395, 1.8 miles S of Ravendale Comment
  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
  CAS-BOT-BC224969  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  SJSU8065  Plagiobothrys hispidus J. W. Tilden 1960-6-27 1495 Lassen Westwood 1524 Comment
  UC100839  Plagiobothrys hispidus Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UC1561381  Plagiobothrys hispidus Barbara Ertter with Gary Schoolcraft 1987-6-16 7190 Lassen on s side Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2286 Comment
  UC1483821  Plagiobothrys kingii G. Schoolcraft 1980-5-8 227 Lassen s. Herlong 1255 Comment
  UC1560401  Plagiobothrys mollis E. Joyal and D. Mehlman 1988-6-27 1286 Lassen Poison Lake 2000 Comment
  JEPS88405  Plagiobothrys mollis var. mollis Vernon H. Oswald and Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir s.w. of Westwood (receding shore of the reservoir n.e. of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  RSA0105581  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA715627  Plagiobothrys scouleri var. cusickii L. Ahart, John Dittes 2005-6-1 11906 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  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
  SEINET10972868  Plagiobothrys tenellus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17760 Lassen Approx. 12 mi S of Adin on CA Hwy 139. 1372 Comment
  POM73080  Plagiobothrys torreyi Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  JEPS103179  Plantago lanceolata G. Schoolcraft 2000-6-5 2897 Lassen Hwy 395 and Johnstonville Road near Susanville Airport 1310 Comment
  SEINET6170697  Platanthera dilatata var. leucostachys C. G. Gulling 1905-1 Lassen 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
  UC1037205  Platanthera leucostachys Leo Whitney 1933-8-8 1562 Lassen ca 8 mi nw Eagle Lake (spring at bed of Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  CHSC117208  Plectritis macrocera Lowell Ahart; John Dittes 2016-6-7 21005 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS114707  Plectritis macrocera Lowell Ahart, John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS26653  Plectritis macrocera Lauramay T. Dempster 1961-6-17 1668 Lassen about 4 mi sw of junction w Richmond Road (s of Susanville, Gold Run Creek); Gold Run Creek Comment
  RSA337278  Plectritis macrocera Noel Holmgren, Patricia K. Holmgren 1980-7-3 9488 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Hwy 395, 14.5 km (9 mi) airline distance southeast of Ravendale. 1700 Comment
  UCD55158  Plectritis macrocera Ellen Dean 2006-5-15 3046 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  CAS-BOT-BC255679  Poa bolanderi Clare B. Hardham 1971-8-22 18912 Lassen Diamond Mountain 2133 Comment
  CAS-BOT-BC227203  Poa bulbosa Barbara T. Keller 1974-5-7 1265 Lassen Along highway 395 about 5 miles west of Hurlong, 1/4 mile south of Honey Lake Comment
  CHSC7688  Poa bulbosa Beverley J. Wise 1969-4-28 133 Lassen North city limits of Milford (Hwy 395). 1310 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
  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
  CAS-BOT-BC255128  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Long Valley, southern Warner Mountains, 3 miles E of Blue Lake 2133 Comment
  JEPS70635  Poa cusickii subsp. cusickii G. S. Crew and C. S. Robinson 1927-7-15 61 Lassen sw Lassen Co. Clover Valley; Lassen Forest 1767 Comment
  HSC10766  Poa pratensis M. T. Milligan 1964-7-16 131 Lassen 2 mi. W on Silver Lake Rd., along Upper Susan River 1829 Comment
  UCD91816  Poa pratensis Louella Bass 1973-5-25 EV 45 Lassen Elysian Valley. 1325 Comment
  CHSC91319  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  CAS-BOT-BC255017  Poa secunda J. D. Schoeller 1928-5-27 406 Lassen Laufman Canyon Summit 1889 Comment
  JEPS126492  Poa secunda Jennifer Mueller, A. Brambila July 6-15, 2016 CA 370 -227 Lassen Head south through Eagleville, CA to Bare Ranch. Comment
  JEPS85786  Poa secunda Roy E. Buck and Robert A. Price 1988-6-26 1027 Lassen ca 30 air km nne Susanville (Fredonyer Peak, on subsidiary peak ca 0.5 air km n of main summit) 2377 Comment
  POM180946  Poa secunda P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia. Comment
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Jan 6 2015
  POM267993  Poa secunda D. D. Keck 1944-7-8 5456 Lassen 5 miles east of Westwood, on road to Fredonyer Pass. 1585 Comment
  SD34480  Poa secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester, mountain meadow 1524 Comment
  SEINET10966852  Poa secunda Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2602 Lassen Hallelujah Jct. intersection of US Hwy 395 & CA Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  CAS-BOT-BC236259  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 miles E of Westwood on road to Fredonyer Pass 1584 Comment
  UC699670  Poa secunda subsp. juncifolia Gus Hormay 1944-7-2 Lassen Halls Flat Comment
  UC718010  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada 1341 Comment
  UCD92377  Poa secunda subsp. juncifolia B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD92396  Poa secunda subsp. juncifolia A. H. Shunk 1923-7-28 s.n. Lassen Madeline. Comment
  UCD92429  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
  CAS-BOT-BC251088  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49189 Lassen Elysian Valley northwest of Janesville 1325 Comment
  SEINET7294025 Image available Poa secunda subsp. juncifolia Leo Whitney 1935-1 3259 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC30521  Poa secunda subsp. secunda Sandra C. Morey 1980-4-26 78 Lassen Hwy. 139, ca. 1.0 mi. s of jctn. with Hwy. 299. 1284 Comment
  CHSC91208  Poa secunda subsp. secunda Lowell Ahart; John Dittes 2005-6-1 11845 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  JEPS107471  Poa secunda subsp. secunda Lowell Ahart, John Dittes 2005-6-1 11845 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1024818  Poa secunda subsp. secunda Leo Whitney 1935-6-19 3261 a Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132871  Poa secunda subsp. secunda A. Simontacchi 1940-5-28 784 Lassen 3.2 mi wsw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132876  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 737 Lassen 5.9 mi s Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132880  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 734 Lassen 5.7 mi ssw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC584341  Poa secunda subsp. secunda G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2322 Lassen ca 1 mi below summit Black Mt 1940 Comment
  UCD90488  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  UCD92016  Poa secunda subsp. secunda A. H. Shunk 1923-1 14 Lassen Hayden Hill. Comment
  UC1024823  Poa wheeleri Leo Whitney 1935-6-13 3241 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024873  Poa wheeleri Leo Whitney 1935-5-26 3154 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1143038  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Nat'l Forest 1859 Comment
  OBI48165  Polemonium micranthum Rhonda Riggins 1989-4-27 1644 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  NY182309  Polyctenium fremontii A. Tiehm 1984-6-25 8825 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81. 1828.8 Comment
  UC1567408  Polyctenium fremontii G. Schoolcraft 1989-5-3 1867 Lassen n end Secret Valley s Karlo; n end Secret Valley s of Karlo 1341 Comment
  UC188175  Polyctenium fremontii J. G. Lemmon Lassen Eagle Lake and Madeline Plains Comment
  SD131676  Polyctenium fremontii Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11703 Lassen 6.6 miles north of the Wendel Road on Highway 395 from Susanville to Alturas. 1349 Comment
  NY406791  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  SEINET3035191 Image available Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  CHSC117618  Polygala subspinosa L. P. Janeway and B. Castro 2015-6-5 11765 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
  UC1537257  Polygonum amphibium var. emersum Gordon H. True 1936-6-22 514 Lassen Honey Lake Valley; deep slough 1219 Comment
  JEPS114703  Polygonum arenastrum Lowell Ahart, John Dittes 2008-6-20 14931 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC1136193  Polygonum bistortoides A. Simontacchi 1940-5-17 741 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1536794  Polygonum bistortoides Gordon H. True Jr. 1939-6-15 1036 Lassen w Grasshopper Valley; Bullard Lake Comment
  CAS-BOT-BC414488  Polygonum douglasii W. R. Dudley 1893-6-23 s.n. Lassen Castle Lake Trail, near Mt. Shasta Comment
  CHSC60384  Polygonum douglasii subsp. douglasii Mary Ann Showers 1992-6-12 2528 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  UC1567376  Polygonum douglasii subsp. douglasii G. Schoolcraft 1989-6-19 1918 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
  RSA128554  Polygonum hydropiper Peter H. Raven 1954-9-2 8115 Lassen Bed of St. Helena Creek at Mirabel Park, 4.8 miles S of Middletown Comment
  UC1603212  Polygonum polygaloides J. Guardino 1993-5-22 171 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CHSC110776  Polygonum polygaloides subsp. confertiflorum Dean Wm. Taylor 2012-7-18 21278 Lassen Cascade Ranges. Windmill Flat tributary Juniper Creek, Pit River Watershed, 11 miles S of Adin). 1706 Comment
  CHSC58506  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 1992-7-3 5049 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1 mi N of Cameron Meadow. 1950 Comment
  UC1060646  Polygonum polygaloides subsp. kelloggii Herbert L. Mason 1957-7-5 14712 Lassen between Madeline and summit of grade; Madeline Plains Comment
  RSA122845  Polygonum sawatchense L. R. Short 1936-5-22 6025 Lassen Burgess Spring, Exp Range. 1837 Comment
  UC465764  Polygonum shastense Franklin P. Nutting Lassen Silver Lake Comment
  CAS-BOT-BC420976  Polygonum spergulariiforme Clare B. Hardham 1969-8-28 17432 Lassen Slope west of Janesville Comment
  SBBG119830  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy 36, ca. 0.25 air mi SW of the Susan River, ca. 8 air mi SW of Susanville 1433 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
  UC1024708  Polypogon monspeliensis Leo Whitney 1934-8-6 2136 Lassen Susan River Honey Lake Valley; , Honey Lake Valley 1371 Comment
  UC1132901  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen near Red Rock; Sierraville Quad., near Red Rock Comment
  CHSC12480  Populus tremuloides Carol Weld 1969-6-25 21 Lassen Murrer's Meadow. 1524 Comment
  SEINET10460760  Porterella carnosula Eggleston 1927-7-11 EGGLESTON 21476 Lassen Bogard Ranger Station, Lassen Forest 1500 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
  SEINET10972533  Porterella carnosula Mary Susan Taylor 1974-1 Taylor 308 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC7716  Portulaca oleracea Beverley J. Wise 1969-6-3 6 Lassen Susanville, 833 Mark St. 1310 Comment
  CHSC4837  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  JEPS97315  Potamogeton amplifolius Vernon H. Oswald 1995-8-26 7218 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
  CHSC117537  Potamogeton diversifolius Lowell Ahart; John Dittes 2017-7-13 21149 Lassen Southwest part of pond, 150 yares east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  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
  SEINET3893473  Potamogeton pusillus Arnold Tiehm, Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0 1698 Comment
  CHSC76030  Potamogeton richardsonii Vernon H. Oswald 1999-8-4 9833 Lassen Mountain Meadows Reservoir southwest of Westwood. Along the edge of the reservoir. 1539 Comment
  RSA327306  Potamogeton richardsonii A. Tiehm, Gary Schoolcraft 1984-8-14 9242 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  UC1536817  Potamogeton striatus Gordon H. True Jr. 1939-7-6 1006 Lassen Honey Lake Valley, Hartson Lake Comment
  UC1598197  Potentilla basaltica G. L. Clifton 1988-7-20 18126 Lassen near Ash Valley; Likely Quad., near Ash Valley 1541 Comment
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 Comment
  UC1191488  Potentilla biennis Verne Grant, Irving Schneider 1947-7-30 8189 Lassen s point of w embayment Tule Lake Comment
  CAS-BOT-BC540031  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  POM312882  Potentilla biennis Verne Grant 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  CAS-BOT-BC143111  Potentilla breweri M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CHSC13850  Potentilla gracilis var. fastigiata F. T. Griggs 1973-7-7 106 Lassen Lassen county Cone Spring. Comment
  CHSC6256  Potentilla gracilis var. fastigiata V. Holt 1946-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CHSC89733  Potentilla gracilis var. fastigiata L. P. Janeway 2004-6-26 8159 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  CAS-BOT-BC540368  Potentilla gracilis var. fastigiata David D. Keck 1930-7-23 956 b Lassen 3 miles east of Westwood 1524 Comment
  JEPS121267  Potentilla gracilis var. flabelliformis Lowell Ahart, John Dittes 2013-7-23 18899 Lassen Along a small drainage, W of the road levee, about 100 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1136994  Potentilla millefolia George A. Fischer, Irwin H. Johnson 1933-7-14 F 240 Lassen Patterson R. S. Lassen National Forest, Patterson R. S. 1737 Comment
  UC1191492  Potentilla rivalis Verne Grant, Irving Schneider 1947-8-1 8236 Lassen e end of Tule Lake Comment
  NY833598  Potentilla rivalis var. millegrana G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1646 Comment
  CHSC35955  Prunus andersonii M. S. Taylor 1982-5-7 4424 Lassen Reno Junction and along old road paralleling Hwy 70 just e of Beckwourth Pass. 1524 Comment
  SEINET3157217  Prunus andersonii E. K. Balls 1950-5-9 15947 Lassen 6 mi S of Doyle, hwy 395 1372 Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  CHSC23523  Prunus emarginata Wayne O. Baum 1971-7-7 71 -83 Lassen N. slope of Gallatin Peak. 2011 Comment
  JEPS126465  Prunus emarginata Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-10 CA 350 -056 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  CAS-BOT-BC154771  Prunus virginiana var. demissa L. B. Barlow 1967-7-1 63 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road 1554 Comment
  RSA123193  Prunus virginiana var. demissa L. R. Short, Wm Gansberg 1936-7-3 S- 466 Lassen MDM. Burgess Spr. Exp. Range. 1848 Comment
  SEINET10914051  Prunus virginiana var. demissa Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 835 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CAS-BOT-BC239797  Pseudoroegneria spicata John Thomas Howell 1934-6-14 12166 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC239806  Pseudoroegneria spicata James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 mi. ssw. of Karlo 1417 Comment
  CHSC67079  Pseudostellaria jamesiana Jeanne Boze 1981-6-13 116 Lassen On northeast slope of Galletin Peak. 1981 Comment
  JEPS94550  Pseudostellaria jamesiana Vernon Oswald and Lowell Ahart 1997-6-24 8619 Lassen 2.7 mi e of boundary of Lassen National Forest (7.4 mi e of God Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment of the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  CAS-BOT-BC174802  Pseudostellaria jamesiana Mrs. H. C. Cantelow 1949-6-11 7 Lassen Summit of Fredonyer Pass Comment
  CAS-BOT-BC361753  Psilocarphus brevissimus var. brevissimus John Thomas Howell 1934-7-10 12541 Lassen Patterson Flats Comment
  JEPS121242  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2013-7-22 18872 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS30616  Psilocarphus brevissimus var. brevissimus Peter H. Raven with Otto T. Solbrig 1958-6-17 13284 Lassen along United States Highway 395 1.9 me s Ravendale Comment
  CAS-BOT-BC361754  Psilocarphus brevissimus var. brevissimus H. D. Ripley; R. C. Barneby 1944-5-30 5961 Lassen North of Viewland 1371 Comment
  CHSC60879  Psilocarphus oregonus Vernon H. Oswald; Lowell Ahart 1993-7-8 5672 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  CDA27774  Psoralidium lanceolatum S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC80646  Psoralidium lanceolatum Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10040 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  UC124154  Psoralidium lanceolatum unknown 1892-6-23 Lassen Honey Lake Comment
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May 13 2011
  UCD136178  Pteridium aquilinum var. pubescens John Thomas Howell; Gordon H. True 1973-5-12 49175 Lassen Sierra Nevada, Elysian Valley northwest of Janesville. 1325 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
  UCD91531  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area. 1981 Comment
  JEPS114875  Puccinellia lemmonii Lowell Ahart, John Dittes 2008-6-20 14967 Lassen Saline area, 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
  UCD91899  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat se of Ravendale BLM Fire Station, Susanville. 1645 Comment
  SEINET4890224  Puccinellia lemmonii N. H. Holmgren, P. Holmgren 1978-6-13 8939 Lassen 2.7 km (1.7mi) north-west of Wendel. 1250 Comment
  CHSC109221  Purshia tridentata B. Castro; L. P. Janeway 2003-10-5 1460 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail betweenCone Lake and Triange Lade, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  CHSC13644  Purshia tridentata M. S. Taylor 1974-6-25 260 Lassen Surrounding meadow, ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC7722  Purshia tridentata Beverley J. Wise 1969-5-4 94 Lassen 3.0 mi west on Shaeffer Mtn Lookout rd off Hwy 395, 27.4 mi. east of Susanville. 2042 Comment
  SEINET10542488  Purshia tridentata Jeffrey Huber 1971-6-11 Huber 338 Lassen 6 miles w of susanville, on calif. Hwy 36, volcanic soil, pinus ponderosa Forest 1615 Comment
  SEINET10542491  Purshia tridentata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 894 Lassen 3 miles n of milford, on hwy 395 at honey lake campgrounds Comment
  CAS-BOT-BC147817  Purshia tridentata var. tridentata Clarence R. Quick 1961-6-21 61 -33 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC147822  Purshia tridentata var. tridentata Margaret Williams; Steven Williams 1974-7-26 74 -L-19 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC147867  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen Near outlet of Widow Lake, ca. 50 yards from lake 2057 Comment
  CHSC66399  Purshia tridentata var. tridentata Vernon H. Oswald; Lowell Ahart 1996-6-17 7769 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Along the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. 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
  RSA0084312  Pyrola dentata Diana D. Jolles, Erik M. Beaston 2011-7-5 441 Lassen Lassen National Forest near area where Susan River flows through Clover Valley. Thinning unit near intersection of A-21 road and Silver Lake Road some miles south of Highway 44. 1784 Comment
  CHSC6237  Pyrola picta P. Balch 1955-7-22 Lassen Between Eagle Lake and Pittville road. 1676 Comment
  UCD18973  Pyrola picta Raymond D. Ratliff 1965-7-29 35 Lassen Lassen National Forest, Harvey Valley and Champ's Flat Allotments (HV 19-13, CF 19-6). 1706 Comment
  CAS-BOT-BC362265  Pyrrocoma carthamoides var. cusickii John Thomas Howell 1934-7-6 12453 Lassen Harvey Valley Comment
  UC1609363  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald and Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd (Lassen 111, 36N01) 3.0 mi n Hwy 44 (ne of Poison Lake) 1709 Comment
  UC469065  Pyrrocoma hirta var. hirta Franklin P. Nutting Lassen Dixey Valley , Northern California 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
  CAS-BOT-BC362273  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains 1614 Comment
  CAS-BOT-BC105246  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen SW of Susanville on Gold Run Road 1341 Comment
  UC1192295  Quercus kelloggii Verne Grant and Irving Schneider 1947-9-7 8400 Lassen several mi s Janesville (along Highway 395, w of Honey Lake, and along e foot of Sierras) Comment
  UCD46733  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen Southwest of Susanville on Gold Run Road, Lassen County. 1341 Comment
  JEPS93978  Ranunculus alismifolius var. alismifolius Vernon H. Oswald 1998-6-22 9230 Lassen ca. 18 mi. n. Westwood (Champs Flat Rd. (A-21) 1.8 mi. n. of Hwy. 44) 1749 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
  CDA24294  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC95453  Ranunculus aquatilis Gordon Leppig, Tony LaBanca 1997-6-29 539 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1537334  Ranunculus aquatilis var. capillaceus Gordon H. True Jr. 1936-6-21 515 Lassen Honey Lake Valley; in deeper sloughs 1219 Comment
  SEINET10899319  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1982-6-12 Taylor 4648 Lassen T29N R10E ne/nw sec 13. Westwood quad. Aquatic in still pond on n side of West Fork of Susan River, s side of Hwy 36 at jct w/ Willow Cr Rd, 8 mi w Susanville. Comment
  CAS-BOT-BC379025  Ranunculus aquatilis var. diffusus M. S. Taylor 1982-6-12 4647 Lassen aquatic in still pond S side of Hwy 36, N side of west fork Susan River, at jct with Willow Creek Rd., ca. 8 mi W of Susanville Comment
  CHSC6246  Ranunculus canus W. Vinyard 1946-6-13 Lassen Pine Creek, Eagle Lake. 60 Comment
  SEINET10536136  Ranunculus cymbalaria Mary Susan Taylor 1974-1 Taylor 268 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  OBI75893  Ranunculus flammula Anthony Baniaga 2011-8-17 504 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1978 Comment
  CHSC60612  Ranunculus flammula var. ovalis Mary Ann Showers 1992-6-13 2549 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC7184  Ranunculus glaberrimus var. ellipticus Lynn R. Thomas 1969-4-17 100 Lassen Ca. 100 yds. w of Rice Canyon Rd., down hillside and just across small creek; 5 mi n of junction with 'Back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  CHSC13795  Ranunculus macounii Cathy Crittenden 1970-7-8 37 Lassen Lower Murrer's Meadow along Willow Creek. 1463 Comment
  RSA715670  Ranunculus occidentalis L. Ahart, John Dittes 2005-6-1 11857 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1126217  Ranunculus occidentalis A. Simontacchi 1940-5-14 707 Lassen 6.1 mi sse Ladder Butte; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1136881  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  UC506988  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  SEINET208822  Ranunculus occidentalis var. eisenii J. Major 1966-6-24 s.n. Lassen Modoc National Forest ; Above Blue Lake Warner Mtns ca 18 air mi SE of Likely 1905 Comment
  UC1587083  Ranunculus sceleratus G. Schoolcraft 1991-6-27 2174 Lassen 3 mi e Susanville (n of Johnstonville Rd, along ditch) 1280 Comment
  OBI5233  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville Comment
  CHSC27740  Ranunculus uncinatus Jennifer Estep 1978-7-5 10 Lassen E side of Mahogany L. 2060 Comment
  UC699688  Ribes hudsonianum var. petiolare J. L. Mielke, J. W. Kimmey 1941-6-29 Lassen Silver Creek (Lost Lake) Warner Mountains, Modoc National Forest Comment
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Jul 19 2010
  JEPS49414  Ribes inerme var. inerme Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  SEINET5339729  Ribes nevadense C. G. Gulling 1905-1 1537 Lassen Big Meadows 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
  SEINET10482949  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 285 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET10838520  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 309 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC60743  Ribes velutinum Vernon H. Oswald; Lowell Ahart 1993-6-14 5547 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
  SEINET10684651  Ribes viscosissimum Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 151 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CHSC117224  Rigiopappus leptocladus Lowell Ahart; John Dittes 2016-6-7 20976 Lassen 20 yards west 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
  JEPS29198  Rigiopappus leptocladus Lauramay T. Dempster 1961-6-17 1672 Lassen Gold Run Creek about 4 mi sw of junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  UC1567416  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen lower ne slope Shaffer Mtn. 1432 Comment
  CAS-BOT-BC363008  Rigiopappus leptocladus unspecified 1940-5-31 s.n. Lassen E. of McArthur Comment
  OBI48617  Rigiopappus leptocladus Lewis S. Rose 1940-6-11 40507 Lassen 8 mi W of Nubieber 1219 Comment
  CHSC84873  Rorippa curvisiliqua Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 354 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  RSA0065538  Rorippa curvisiliqua Marion P. Harthill 1971-6-20 216 Lassen Susanville. Comment
  JEPS114351  Rorippa curvisiliqua var. orientalis Lowell Ahart, John Dittes 2008-6-20 14937 Lassen On the edge of Big Valley Canal and in vernal pools, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast o 1263 Comment
  CHSC25060  Rorippa nasturtium-aquaticum L. B. Barlow 1967-6-24 40 Lassen Meadow 4 mi. east of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 Comment
  UC1536933  Rorippa nasturtium-aquaticum Gordon H. True Jr. 1936-6-26 547 Lassen e Eagle Lake (head of Willow Creek); , e of Eagle Lake 1584 Comment
  JEPS121241  Rorippa palustris subsp. hispida Lowell Ahart, John Dittes 2013-7-22 18864 Lassen N margin of a duck field, about 100 yards E of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  NY758403  Rorippa sinuata N. H. Holmgren 1980-7-3 9478 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) air distance northwest of Termo 1620 Comment
  NY182161  Rorippa sinuata G. Schoolcraft 1983-6-22 1018 Lassen Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  JEPS128172  Rosa woodsii M. C. Mahoney, J. A. Nash 2017-8-7 CA 350 -87 Lassen South of Horse Lake. From Susanville take Highway 139 N. Turn right Horse Lake Road (Highway 536). Continue for 5 miles. Population is on the right in a drainage running parallel to the road. Comment
  CHSC66400  Rosa woodsii subsp. ultramontana Vernon H. Oswald; Lowell Ahart 1996-6-17 7773 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 bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  SDSU9232  Rosa woodsii var. ultramontana D. F. Howe 1964-8-1 3916 Lassen Prsnip Creek, Warner Mtns. Modoc National Forest. 1829 Comment
  UC773922  Rosa woodsii var. ultramontana L. R. Short and Wm. Gansberg 1936-7-9 S- 484 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  CAS-BOT-BC148389  Rubus leucodermis Louella Bass 1973-5-29 EV- 53 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CHSC6261  Rubus leucodermis P. Balch 1955-7-20 Lassen Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville. 1615 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
  JEPS28496  Rubus parviflorus George W. Gillett 1957-7-26 912 Lassen Butte Lake Lassen Volcanic National Park, Butte Lake 1844 Comment
  CHSC106088  Rumex acetosella Lowell Ahart; John Dittes 2010-7-31 17001 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC27648  Rumex acetosella George Deniso 1978-7-16 74 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  CAS-BOT-BC421954  Rumex acetosella Margaret Williams; Louella Bass 1972-10-22 EV 5 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CHSC112845  Rumex crispus Lowell Ahart; John Dittes 2013-7-22 18865 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC452560  Rumex crispus Franklin P. Nutting Lassen near Lookout; Big Valley Comment
  CHSC113066  Rumex fueginus Lowell Ahart; John Dittes 2013-7-22 18849 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC433634  Rumex lacustris James Jokerst 1983-7-25 1891 Lassen Near Madeline Plains. 1614 Comment
  SD64325  Rumex lacustris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on hwy #395 1676 Comment
  CAS-BOT-BC433633  Rumex lacustris M. K. Bellue 1947-9-1 s.n. Lassen Along highway between Doyle and Janesville 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
  UCR163274  Rumex salicifolius Jim Andre 1993-6-29 1409 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  SDSU9722  Rumex salicifolius var. lacustris D. F. Howe 1966-8-25 Lassen 41.0 Miles s of Alturas on #3954.2 miles N of juction with #12, on #1. 1676 Comment
  UC1594643  Rumex salicifolius var. triangulivalvis Vernon H. Oswald and Lowell Ahart 1992-7-16 5123 Lassen 1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on the logging road paralleling the e side of Bridge Creek, swamp on Bridge Creek); Bridge Creek 1719 Comment
  CAS-BOT-BC109418  Rumex venosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49231 Lassen Sierra Nevada. On Highway 395 northwest of Doyle on road to Milford. 1280 Comment
  SEINET8584738  Rumex venosus W. Harnach 2011-6-4 1247 Lassen NE slope of Turtle Mtn., Fort Sage Mtns., Honey Lake Valley, approx. 7.5 miles NE of Doyle, CA on the Fort Sage Road. 1329 Comment
  CHSC27591  Sagittaria cuneata J. D. Prouty 1978-7-23 24 Lassen Upper Murrers Meadow, SE of Eagle L. 1545 Comment
  CHSC5006  Sagittaria cuneata L. G. Bennett 1968-7-8 124 Lassen Murrers Meadow, north end, near Eagle Lake. 1493 Comment
  CHSC66737  Sagittaria cuneata Vernon H. Oswald; Lowell Ahart 1996-8-1 8107 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  HSC95346  Salix eastwoodiae Gordon Leppig, J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC106585  Salix exigua C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC91187  Salix exigua Lowell Ahart; John Dittes 2005-6-1 11905 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
  CAS-BOT-BC107961  Salix geyeriana John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49220 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  HSC26528  Salix lasiandra J. P. Smith, J. O. Sawyer 1972-5-6 5239 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  CAS-BOT-BC128126  Salix lasiandra var. lasiandra G. Schoolcraft 1999-5-7 2821 Lassen Susanville, along BJ Trail near 4 mi. marker. 1371 Comment
  CHSC9572  Salix lemmonii E. L. Smith 1971-4-28 946 B Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  UC1776696  Salix lemmonii G. Schoolcraft 1994-8-3 2425 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  HSC95283  Salix petrophila Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UCD170117  Salsola paulsenii R. Breckenridge; K. Filippini 2007-6-14 s.n. Lassen Wendell Plains. Comment
  UC1037333  Salsola tragus Leo Whitney 1934-9-1 1957 Lassen Fredonyer Pass Lassen Nat'l Forest, Fredonyer Pass Comment
  UC669627  Salvia aethiopis Vesta Holt 1944-6-19 Lassen roadside near Susanville Comment
  CDA5754  Salvia aethiopis C. Siebe, W. V. Johnson 1958-7-11 Lassen Westwood. 0 Comment
  CHSC42206  Salvia dorrii C. E. Laver 1985-6-1 Lassen Ca. 5.5 mi ne of Litchfield and 5 mi nw of Wendel. 1371 Comment
  CDA40944  Salvia dorrii subsp. dorrii Vernon H. Oswald & Lowell Ahart 1998-6-4 9145 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. Comment
  CAS-BOT-BC214313  Salvia dorrii var. pilosa Ella Dales Cantelow 1941-5-22 3656 Lassen 2 1/2 mi. n. of Secret Valley C.C.C. Camp, Hy. 395, Quincy to Alturas Comment
  CHSC12487  Sambucus mexicana Carol Weld 1969-6-26 45 Lassen 7.8 miles SW of Eagle Lake Field Station. 1584 Comment
  CAS-BOT-BC238592  Sambucus nigra subsp. caerulea John Thomas Howell 1974-7-10 50548 Lassen Elysian Valley 1325 Comment
  CHSC60347  Sambucus racemosa var. microbotrys Mary Ann Showers 1992-6-13 2557 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  JEPS103224  Sanicula graveolens G. Schoolcraft 1992-5-1 2235 Lassen W. of Susan Hills Subd. SW. of Susanville 1341 Comment
  JEPS947  Sanicula tuberosa G. S. Crew, C. S. Robinson 6/1/1927-7/1/1927 12 Lassen near Westwood Junction (Lassen National Forest, Norval Flat, sw Lassen County); Lassen National Forest, Norval Flat 2051 Comment
  CAS-BOT-BC110337  Sarcobatus vermiculatus John Thomas Howell 1934-6-10 11897 Lassen Horse Lake. Comment
  CAS-BOT-BC466321  Sarcodes sanguinea John Thomas Howell 1973-7-10 49786 Lassen Sierra Nevada, Fredonyer Pass 1737 Comment
  UC1608991  Saxifraga nidifica var. nidifica Vernon H. Oswald and Lowell Ahart 1993-5-12 5388 Lassen 1.6 mi se of Pittsville Road (Hwy 44 between Poiston Lake and A21 (to Westwood)) 1719 Comment
  RSA59813  Saxifraga oregana E. K. Balls 1950-5-19 14771 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  CAS-BOT-BC283611  Schedonorus pratensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49466 Lassen Elysian Valley, W of Janesville 1325 Comment
  RSA252443  Schoenoplectus pungens Robert F. Thorne, C. W. Tilforth 1969-9-6 39257 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  POM111502  Scirpus microcarpus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CDA28506  Sclerolinon digynum J. T. Howell, G. H. True 1973-6-28 49490 Lassen Elysian Valley. Comment
  CAS-BOT-BC240003  Scribneria bolanderi Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 759 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  JEPS88199  Scribneria bolanderi Vernon H. Oswald and Lowell Ahart 1996-6-17 7804 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side of trail between Devils Corral Trailhead and the 6.0 mi. post); Modoc Plateau, Bizz Johnson Trail 1420 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
  UC1561866  Scrophularia desertorum Barbara Ertter with Gary Schoolcraft 1987-6-16 7191 Lassen ne side Honey Lake (s side of Hot Springs VABM); Skeedaddle Mts 2286 Comment
  CAS-BOT-BC383106  Scrophularia lanceolata Andrew Townesmith; Karen M. Meyer 2007-7-20 837 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  SEINET4855797  Scutellaria holmgreniorum Unknown 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U. S. Hwy 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale. 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
  UC1137689  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest, Lassen Forest and Range Experiment Station Lassen National Forest; , Lassen Forest and Range Experiment S 1722 Comment
  UC506981  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest 1722 Comment
  CAS-BOT-BC240083  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16344 Lassen 13.5 mi. E. of Susanville Comment
  CAS-BOT-BC240084  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16342 Lassen 13.5 mi. E. of Susanville Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  UC831880  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen w of Fredonyer Pass (on Highway 36) 1676 Comment
  CHSC108003  Senecio hydrophiloides Lowell Ahart; John Dittes 2011-6-20 17503 Lassen About 10 yards west of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  UC2027206  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen National Forest. Southern McCoy Flat. Spalding Tract quandrangle Comment
  HSC28835  Senecio integerrimus D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19263 Lassen In Harvey Valley near Cone Springs Comment
  OBI76982  Senecio integerrimus var. exaltatus Anthony Baniaga 2011-6-20 384 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  UC1608996  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1993-6-3 5480 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y) where it diverges from Lassen 21 (32N02) to Eagle Lake (s side of valley, between Poison Lake and Susanville); Pine Creek Valley 1725 Comment
  CAS-BOT-BC364153  Senecio serra B. 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
  HSC90792  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air mi due S of Susanville. 2256 Comment
  RSA768029  Sidalcea glaucescens L. Ahart, John Dittes 2010-7-31 17016 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  CAS-BOT-BC205766  Sidalcea oregana L. S. Smith 1918-8-12 1031 Lassen Modoc National Forest. Camp One Comment
  CHSC6184  Sidalcea oregana R. Gein 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  HSC95261  Sidalcea oregana subsp. spicata Gordon Leppig 1998-8-17 1050 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET9005527  Sidalcea oregana var. spicata C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CAS-BOT-BC384308  Silene bernardina John Thomas Howell 1934-7-10 12536 Lassen Between Harvey Valley and Patterson Flats Comment
  UC585109  Silene bernardina E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1765 Lassen rocky ne slope of ridge near summit e Red Rock; summit e of Red Rock 1828 Comment
  UC311415  Silene lemmonii Marcus E. Jones, A. M. 1897-6-28 Lassen Perkin's Ranch Diamond Mt., , Perkin's Ranch (Susanville) 1828 Comment
  CAS-BOT-BC389552  Silene nuda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49488 Lassen Elysian Valley. West of Janesville 1325 Comment
  CHSC36188  Silene nuda M. S. Taylor 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass. 1432 Comment
  JEPS50953  Silene nuda W. L. Jepson 1918-8-3 7802 Lassen near Buntingville (at Raker Ranch, Honey Lake Valley); Honey Lake Valley, at Raker Ranch 1219 Comment
  CAS-BOT-BC389548  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  SJSU10112  Silene nuda J. W. Tilden 1960-6-27 1502 Lassen foot of Moonlight Rd near Westwood 1524 Comment
  UC465657  Silene occidentalis subsp. occidentalis Franklin P. Nutting Lassen Silver Lake Comment
  CAS-BOT-BC75079  Sisymbrium altissimum Louella Bass 1973-5-25 46 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC75078  Sisymbrium altissimum Barrett Anderson 1986-7-9 3123 Lassen Road to Day, about 2.4 km north of Route 299. 1065 Comment
  RSA123140  Sisyrinchium bellum L. R. Short, William Gansberg 1936-6-11 S- 430 Lassen Burgess Spr. Exp. Range 1731 Comment
  CHSC7681  Sisyrinchium douglasii Beverley J. Wise 1969-4-21 137 Lassen 2.6 mi. south of Susanville on the old dump road. 1341 Comment
  CAS-BOT-BC365369  Solidago elongata B. C. Cain 1925-8-24 78 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CAS-BOT-BC365752  Solidago spectabilis Lassen 1927 G. S. Crew 1927-7-15 82 Lassen Lassen National Forest. Feather Lake 1737 Comment
  UC1136808  Solidago velutina subsp. californica L. R. Short 1936-8-20 S- 376 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1859 Comment
  HSC21349  Sparganium emersum Fred J. Kindel 1955-6-27 Lassen Mt. Meadows Reservoir. Comment
  UC1099936  Sparganium emersum var. emersum Verne Grant and Irving Schneider 1947-8-24 8271 Lassen nw shore Blue Lake (n Lassen County) Comment
  CHSC93240  Sphaeromeria potentilloides var. potentilloides John Dittes; Scott Chamberlain 2004-6-28 1013 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-miles east of Plumas County line; meadow. 1445 Comment
  UC13098  Spiraea densiflora M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC149629  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen Mt. Lassen National Park between Grassy and Snag Lakes Comment
  SEINET10737171  Spiraea douglasii Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 840 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CHSC61074  Spiranthes porrifolia Vernon H. Oswald 1993-8-3 5754 Lassen Cooper Swamp located E of Siver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  HSC95184  Spiranthes porrifolia Gordon Leppig 1998-8-17 1038 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95268  Spiranthes romanzoffiana Gordon Leppig, J. Cromwell 1997-7-26 601 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET3818362  Spiranthes romanzoffiana A. A. Heller 1938-1 Lassen Comment
  JEPS128405  Stachys rigida Catherine Bauer with Ellen Bauer Benson 2017-8-16 12 Lassen South of Highway 44, North of Butte Lake, between Butte Creek and access road into Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  GMDRC6448  Stanleya viridiflora J. M. Andre, Glenn Clifton 1993-6-14 30001 Lassen northeast base of Shaffer Mtn near Secret Creek, about 20 miles ENE of Susanville 1646 Comment
  CHSC96723  Stellaria longipes var. longipes Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 544 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CHSC68848  Stenotus acaulis Vernon Oswald; Lowell Ahart 1997-6-24 8630 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
  CDA18266  Stephanomeria spinosa G. D. Barbe 1974-8-2 1929 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UCR57502  Stephanomeria spinosa R. D. Goeden, Don W. Ricker 1989-8-22 890822- 10 Lassen Modoc Plateau, Horse Lake Road, just east of Hansen Road, SW of Ravendale 1567 Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  CHSC66853  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1996-10-3 8296 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 13.4 mi N of Smoke Creek Ranch Rd. Roadside. 1524 Comment
  SEINET10524630  Stipa comata var. comata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 884 Lassen Coll 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  UCR119159  Stipa nevadensis Beecher Crampton 1960-6-18 5729 Lassen Warner Mountains, Southern edge of mountains, 1.25 miles north of Blue Lake in vicinity of Blue Lake Ranch. 1982 Comment
  SEINET10973548  Streptanthus cordatus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17787 Lassen 6 mi. N. Of hallelujah jct on us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  UC1123452  Swertia albicaulis var. albicaulis A. Simontacchi 1940-6-6 823 Lassen 3.6 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  SBBG58593  Swertia albicaulis var. nitida S. W. Hutchinson -Jun-1925 369 Lassen Eagle Lake 1554 Comment
  POM68227  Symphoricarpos acutus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS13650  Symphoricarpos mollis Mrs. R. M. Austin 1879-1 Lassen Mt. Dyer; extreme sw Lassen County near Plumas County boundary 2277 Comment
  CAS-BOT-BC245874  Symphoricarpos rotundifolius T. S. Brandegee 1892-6-26 s.n. Lassen Milford Comment
  CHSC12410  Symphoricarpos rotundifolius var. rotundifolius Lynn R. Thomas 1969-6-20 133 Lassen Road up Black Mt. N of Five Corners, ca. 3 mi S of E. L. B. S. 1706 Comment
  CAS-BOT-BC97525  Symphyotrichum ascendens Elmer I. Applegate 1923-9-30 4036 Lassen Constantia, Honey Lake Valley Comment
  JEPS93963  Symphyotrichum campestre Vernon H. Oswald 1998-9-14 9623 Lassen Windy Hollow on the w side of Highway 44 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44 1737 Comment
  SD64326  Symphyotrichum campestre Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395 1675 Comment
  CAS-BOT-BC98929  Symphyotrichum foliaceum var. parryi G. Schoolcraft 1994-7-6 2359 Lassen About 1 mile west of Boot Lake 204 Comment
  CHSC59130  Symphyotrichum frondosum Vernon H. Oswald 1992-7-3 5054 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1851 Comment
  JEPS40821  Symphyotrichum spathulatum Brown and Wieslander 1922-7-30 66 Lassen Martin Sprs, Eagle Lake Eagle Lake Comment
  RSA201220  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 s.n. Lassen Ca. 4 miles SE of Susanville. Comment
  CAS-BOT-BC376848  Taraxacum John Thomas Howell 1934-6-14 12139 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC117508  Taraxacum officinale Lowell Ahart; John Dittes 2016-7-13 21112 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 southern slope of Big Valley. 1289 Comment
  CHSC27714  Taraxia tanacetifolia Robert A. Schlising 1978-7-6 3311 Lassen Dry Lake, SE of Eagle Lake. 1645 Comment
  JEPS31727  Taraxia tanacetifolia W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment
  JEPS31730  Taraxia tanacetifolia W. L. Jepson 1918-8-15 7998 Lassen Grasshopper Valley 1615 Comment
  UC1035972  Taraxia tanacetifolia Helen K. Sharsmith 1955-6-27 4511 B Lassen forest adjacent to State Hwy 299 near Fall River Mills; Lassen National Forest 1219 Comment
  UC1143007  Taraxia tanacetifolia August L. Hormay 1934-5-14 Lassen Poison Lake Lassen <National> Forest 1706 Comment
  UC128751  Taraxia tanacetifolia Milo S. Baker Lassen near Eagle Lake Comment
  UCD18972  Taraxia tanacetifolia Jack N. Reppert 1965-7-15 37 Lassen Lassen National Forest, Champ's Flat Allotment (CF 17-41). 1682 Comment
  CAS-BOT-BC329047  Tetradymia canescens Elmer I. Applegate 1897-6-4 3034 Lassen Madeline Plains Comment
  CHSC64761  Tetradymia canescens Vernon H. Oswald 1995-6