Search Results — 2000 specimen records retrieved (1626 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
  CHSC23488  Abies concolor Wayne O. Baum 1971-7-16 71 -73 Lassen E. slope of Gallatin Peak. 2072 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
  CHSC6219  Abies magnifica P. Balch 1955-6-1 Lassen Silver Lake. 1981 Comment
  CHSC68838  Acer glabrum var. torreyi Vernon Oswald; Lowell Ahart 1997-6-24 8607 Lassen South of Susanville on the north side of Diamond Mtn. At a springy slope with streamlets along Forest Rd.29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary 1889 Comment
  CAS-BOT-BC334175  Acer negundo var. californicum J. T. Howell 1975-7-23 s.n. Lassen Susanville, in park 1295 Comment
  CHSC12493  Achillea millefolium Carol Weld 1969-6-20 20 Lassen Dean's Meadow. 1950 Comment
  CAS-BOT-BC28649  Achillea millefolium Lassen 1927 G. S. Crew 1927-7-15 78 Lassen Lassen County 1725 Comment
  CHSC52909  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near the east-side of saddle ca 0.8 mi NE of Meadowview Peak. 1981 Comment
  RSA647518  Achnatherum hymenoides Marion P. Harthill 1972-6-16 777 Lassen Doyle 1372 Comment
  CAS-BOT-BC210661  Achnatherum lemmonii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50644 Lassen South and southeast of Diamond Mt. 2286 Comment
  UC773978  Achnatherum lemmonii L. R. Short and J. Warren 1936-6-9 S- 401 Lassen Burgess Spr. Exp. Range Lassen Forest 1808 Comment
  UCD50563  Achnatherum lemmonii B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CAS-BOT-BC210742  Achnatherum nelsonii John Thomas Howell 1976-7-20 52026 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  SEINET249960 Image available Achnatherum nevadense Beecher Crampton 1954-7-5 2064 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  CAS-BOT-BC216802  Achnatherum occidentale John Thomas Howell 1934-7-6 12431 Lassen Hall's Flat Comment
  CAS-BOT-BC216444  Achnatherum occidentale subsp. californicum 1927-6-25 29 Lassen Unspecified 1706 Comment
  UC773979  Achnatherum occidentale subsp. californicum L. R. Short and Wm. Gansberg 1936-6-2 S- 366 Lassen Burgess Spring Experiment Range Lassen Forest 1858 Comment
  UC1024688  Achnatherum occidentale subsp. occidentale Leo Whitney 1933-7-15 2157 Lassen 16 mi w of upper end of Eagle Lake; Lassen National Forest, Harvey Montain Comment
  CAS-BOT-BC218609  Achnatherum occidentale subsp. pubescens John Thomas Howell 1976-7-20 52003 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek, Sierra Nevada 1432 Comment
  CAS-BOT-BC218613  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True 1973-7-31 50033 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  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
  RSA700231  Achnatherum thurberianum L. P. Janeway 2001-6-20 7205 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  SEINET235298 Image available Achnatherum thurberianum R. B. Turner 1980-5-18 Lassen Hwy 139 1 miles N of Susanville. 1463 Comment
  UCD55535  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen 7 miles north of Madeline, along US highway 395. 1524 Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  SBBG67342  Acmispon americanus S. W. Hutchinson -Jun-1925 539 Lassen Eagle Lake region 1554 Comment
  CHSC27639  Acmispon americanus var. americanus George Deniso 1978-7-16 77 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  CHSC117223  Acmispon denticulatus Lowell Ahart; John Dittes 2016-6-7 20996 Lassen West of the pond, 110 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bierber, 7.3 Miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS120844  Acmispon denticulatus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18746 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC112436  Aegilops cylindrica Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18787 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  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
  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
  JEPS28682  Agastache parvifolia George W. Gillett 1957-7-26 909 Lassen along e shore Butte Lake (Butte Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Butte Lake 1859 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
  CAS-BOT-BC30235  Ageratina occidentalis Hans Leschke 1956-9-22 s.n. Lassen Near Sulphur Works entrance 2042 Comment
  HSC63943  Ageratina occidentalis Teresa Prendusi 1980-7-16 Lassen Willow Creek 1463 Comment
  UC29341  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  UC29344  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  JEPS107469  Agoseris glauca var. glauca Lowell Ahart, John Dittes 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 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UCD128649  Agoseris glauca var. glauca Grady L. Webster 1989-5-13 7704 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  JEPS103193  Agoseris grandiflora G. Schoolcraft 2000-6-19 2904 Lassen West of Cold Spring Valley 1706 Comment
  UC29371  Agoseris grandiflora var. grandiflora M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  CAS-BOT-BC22894  Agoseris heterophylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49168 Lassen Elysian Valley northwest of Janesville 1325 Comment
  UC1136777  Agoseris parviflora L. R. Short and J. Warren 1936-6-5 S- 372 Lassen Burgess Spr. Exp. Range Lassen National Forest 1798 Comment
  UC584270  Agoseris parviflora G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2325 Lassen about 1 mi below summit Black Mt. 1940 Comment
  UCD55280  Agoseris retrorsa Ellen Dean 2006-5-15 3095 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  HSC100160  Agropyron cristatum J. P. Smith, & J. O. Sawyer 2011-8-14 13375 Lassen Ramhorn Campground. 1383 Comment
  UCR244067  Agropyron cristatum Jim Andre, G. L. Clifton 1993-6-9 19693 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
  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
  SEINET10509727  Agropyron desertorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 484 Lassen 5 mi s of milford near honey lake on us hwy 395; along roadside in grass Artemesia tridentata assoc; quercus jeffery pine on mtn range to west at Approximately the same altitude. 1250 Comment
  SEINET7297772 Image available Agrositanion John Thomas Howell 1976-1 52002 Lassen Open juniper-Jeffrey pine woodland on basaltic rock, about 5 miles west of Fredonyer Pass near confluecne of Susan River and Willard Creek. 1433 Comment
  UC60210  Agrostis J. Burtt Davy Jun 17 1897-Jun 24 1897 3303 Lassen Honey Lake Valley 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
  JEPS121247  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards S of the man-made pond, about 120 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley. Comment
  POM313172  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  RSA129621  Agrostis exarata H. S. Yates 1936-8-11 6067 Lassen Baxter Creek 1280 Comment
  RSA299261  Agrostis exarata J. T. Howell, Gordon H. True 1973-8-1 50226 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville Comment
  UC53515  Agrostis exarata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CAS-BOT-BC139675  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49484 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1567418  Agrostis pallens G. Schoolcraft 1989-7-18 1978 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UC53496  Agrostis pallens M. S. Baker and Frank Nutting 1894-7-21 Lassen Eagle Lake 1524 Comment
  UCD53118  Agrostis pallens Beecher Crampton 1960-6-20 5732 Lassen Halls's Flat, 1/2 mile south Black's Mtn. Exper. Sta. USDA, 11 miles n.w. Bogard Ranger Station, Lassen Natl. Forest. 1706 Comment
  UC1024796  Agrostis scabra Leo Whitney 1933-8-4 2228 Lassen ca 10 mi nw Eagle Lake, n end; Lassen National Forest, Sheepshead 1889 Comment
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest Comment
  UCD53299  Agrostis scabra L. Whitney 1933-8-15 s.n. Lassen Meadow near Sheepshead. Comment
  CHSC29881  Agrostis stolonifera Robin L. Ondricek 1978-8-2 112 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  UC53478  Agrostis variabilis M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake 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
  RSA119134  Alisma plantago-aquatica Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC55670  Alisma plantago-aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3337 Lassen Susan River Honey Lake Valley 1219 Comment
  UC1536805  Alisma plantago-aquatica Gordon H. True Jr. 1939-7-6 1016 Lassen George Bailey Ranch Honey Lake Valley Comment
  JEPS124713 Image available Alisma triviale P. Matteson 1968-7-9 86 Lassen 1.6 mi. N. of intersection of HWY 139 and Horse Lake Road. Comment
  CHSC29882  Allium acuminatum Robin L. Ondricek 1978-6-6 36 Lassen One me S of Colley Point Overlook on Hwy 139. 1670 Comment
  CHSC7661  Allium acuminatum Beverley J. Wise 1969-5-18 138 Lassen 17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  CAS-BOT-BC459567  Allium acuminatum H. C. Cantelow 1940-5-31 3898 Lassen East of Mc Arthur Comment
  HSC47285  Allium anceps Dale McNeal 1978-5-30 2127 Lassen Beside Hwy. 395, 3 mi. S of Ravendale Comment
  SEINET10899656  Allium anceps Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2572 Lassen 3 miles s of hallelujah jct., On u.s. Hwy. 395, Jct. Of u.s. 395 & Calif. 70; Along roadside and in artemesia - grassland field Comment
  SEINET222604 Image available Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Hwy 395, 3 mi. S of Ravendale. Comment
  RSA125593  Allium lemmonii Peter H. Raven, Otto T. Solbrig 1958-6-17 13288 Lassen U. S. Highway 395, 1.8 miles south of Ravendale. 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
  SEINET10532723  Allium lemmonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17786 Lassen 6 miles n of hallelujah jct. On u.s. Hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge & in sandy wash 1402 Comment
  SEINET3885792  Allium lemmonii Noel H. Holmgren, Patricia K. Holmgren 1978-6-12 8934 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance east-southeast of Ravendale.; 0 1768 Comment
  CHSC7185  Allium parvum Lynn R. Thomas 1969-4-17 90 Lassen 100 yds n of Ward Lake, ca. 15 mi e of Susanville. 1280 Comment
  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
  POM110002  Allium platycaule Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  POM110004  Allium platycaule Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  SEINET3878902  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 mi W of Madeline on rd. from Adin.; 0 1676 Comment
  RSA367108  Allium platycaule Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
Read comments
Nov 17 2011
  CHSC117192  Allophyllum divaricatum Lowell Ahart; John Dittes 2016-6-7 21011 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC106708  Allophyllum integrifolium T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC26169  Alnus incana subsp. tenuifolia Detzer; Sacks 1977-7-24 2 Lassen Ca. 3 mi se Milford, .5 mi se Laufman Ranger Stn., on unimproved USFS road. 1481 Comment
  UC1135175  Alnus incana subsp. tenuifolia C. W. Hanks 1934-9-27 94 Lassen Long Valley Sierraville Quadrangle (w slope, near Plumas National Forest) Comment
Read comments
May 8 2013
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  CHSC117529  Alopecurus carolinianus Lowell Ahart; John Dittes 2016-7-13 21142 Lassen Scattered along the west edge of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC108017  Alopecurus geniculatus Lowell Ahart; John Dittes 2011-6-20 17504 Lassen In the small stream, about 80 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
  RSA0029642  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen National Forest. Poison Lake. 1700 Comment
  SEINET200168  Alopecurus geniculatus M. A. Nobs, SG Smith 1949-5-29 764 Lassen 2 mi E of Adin Comment
  CAS-BOT-BC137990  Alopecurus pratensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49219 Lassen Sierra Nevada. Elysian Valley northwest of Janseville. 1325 Comment
  UC1924261  Alyssum minus subsp. micranthum Debra Valov 2004-5-31 2004226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC1924262  Alyssum minus subsp. micranthum Debra Valov 2004-5-31 2004226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC106172  Amaranthus blitoides Lowell Ahart; John Dittes 2010-8-30 17090 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CHSC29941  Amaranthus blitoides Robin L. Ondricek 1978-8-7 117 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  CHSC29942  Amaranthus blitoides Robin L. Ondricek 1978-8-2 111 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  UCD97198  Amaranthus blitoides John Thomas Howell 8-9 Jul 1974 50501 Lassen Sierra Nevada. Susanville. 1295 Comment
  JEPS124370  Amaranthus californicus Lowell Ahart, John Dittes 2015-7-13 20317 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS40951  Ambrosia acanthicarpa R. F. Hoover 1940-10-5 4666 Lassen Wendel 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
  RSA132023  Ambrosia acanthicarpa Delzie Demaree 1959-8-18 41520 Lassen P.O. Termo. Comment
  CHSC29918  Amelanchier alnifolia var. pumila Robin L. Ondricek 1978-5-25 26 Lassen .5 mi S of tunnel crossing on road to Eagle Lake Field Station. 1554 Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  RSA166673  Amelanchier pallida Alfred Richardson 1961-5-30 8 Lassen S of Eagle Lake. 1402 Comment
  RSA38467  Amelanchier pallida Philip A. Munz 1947-5-19 11859 Lassen Fredonyer Forest Camp Ground on Hwy 36 W of Susanville. 1509 Comment
  CHSC60784  Amphiscirpus nevadensis Vernon H. Oswald; Lowell Ahart 1993-6-14 5521 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). Shallow depressions among low dunes on the upper beach between the road and the lake. 1566 Comment
  CAS-BOT-BC28271  Amphiscirpus nevadensis William Anderson 1963-6-25 s.n. Lassen Dakin unit, Honey Lake Refuge. Comment
  CAS-BOT-BC222251  Amsinckia Elmer I. Applegate 1934-5-4 8916 Lassen At south end of Secret Valley Comment
  CAS-BOT-BC222254  Amsinckia John Thomas Howell 1934-6-16 12220 Lassen Big Valley, 4 miles ne. of Bieber Comment
  POM71504  Amsinckia intermedia Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA0089911  Amsinckia menziesii L. Ahart 2005-6-1 11899 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
  SEINET10455820  Amsinckia menziesii Paul Gallian, David B. Dunn 1971-6-2 Gallian 480 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus-Jeffrey Pine on mountain range to W at approximately the same altitude. 1250 Comment
  JEPS114629  Amsinckia menziesii var. menziesii Lowell Ahart, John Dittes 2008-6-22 15042 Lassen On the east side of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  HSC28822  Amsinckia tessellata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19277 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CHSC64764  Amsinckia tessellata var. tessellata Vernon H. Oswald 1995-5-24 6761 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1280 Comment
  JEPS94122  Amsinckia tessellata var. tessellata Vernon H. Oswald and Lowell Ahart 1998-5-22 9091 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  UC1167764  Amsinckia tessellata var. tessellata Peter H. Raven with Otto T. Solbrig 1958-6-17 13276 Lassen 19.0 mi s Ravendale (along US Hwy 395) Comment
  UC585123  Amsinckia tessellata var. tessellata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1747 Lassen e facing slope of gully on mountain above Red Rock 1432 Comment
  UC424647  Anemone occidentalis R. H. Finch Aug. 1930 Lassen <Mineral ?> Comment
  UC1483865  Anisocoma acaulis G. Schoolcraft 1980-5-7 225 Lassen s shore Honey Lake Island 1219 Comment
  SEINET2035368  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1370 Comment
  HSC42425  Antennaria argentea Barbara Kelly 1977-8-8 550 Lassen Ash Creek Campground Comment
  CHSC91298  Antennaria dimorpha Lowell Ahart; John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC1137285  Antennaria dimorpha K. E. Bradshaw 1939-5-27 244 Lassen near s end of Black Mt. Experimental Forest; Lassen National Forest, Halls Flat Quad., Thompson Meadow 1737 Comment
  CDA10076  Antennaria dimorpha T. C. Fuller 1963-6-1 10640 Lassen 0.25 mile north of Willow Springs Campground, 3.1 miles southeast of Pittville-Susanville Road, 12.4 miles (road) south of Pittville. 0 Comment
  CAS-BOT-BC69136  Antennaria geyeri John Thomas Howell 1934-7-8 12492 Lassen Spalding's, Eagle Lake Comment
  CHSC60809  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 .1 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  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
  CHSC86973  Antennaria geyeri L. P. Janeway 2001-6-20 7206 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
  RSA700232  Antennaria geyeri L. P. Janeway 2001-4-20 7206 Lassen HIGH CASCADE RANGE: 0.6 km east of road 111 and 1.3 km south of Road 35N60, about 11 km west of ittle Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC506910  Antennaria geyeri George A. Fischer and Irwin H. Johnson 1933-7-17 F- 267 Lassen Lassen National Forest 1722 Comment
  UC773955  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Burgess Spring Experiement Range 1828 Comment
  CAS-BOT-BC69142  Antennaria geyeri Christopher Davidson 1974-7-24 2487 Lassen jCa. 4 mi W of Janesville on rd to Antelope Valley 2133 Comment
  JEPS19756  Antennaria luzuloides Rimo Bacigalupi with S. Galen Smith 1957-6-28 5996 Lassen 3.6 mi n of Madeline 1645 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
  RSA32730  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen State highway 36, about 4 miles east of Westwood Comment
  CHSC60810  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1993-6-14 5527 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
  CHSC64837  Antennaria luzuloides subsp. aberrans Vernon H. Oswald 1995-6-25 6930 Lassen Modoc Plateau Ash Valley Rd. (Lassen 527), 9.5 mi w of Madeline, on the s side of the reservoir at Fleming Sheep Camp. 1621 Comment
  CAS-BOT-BC77284  Antennaria microphylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49414 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS95712  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  CHSC60838  Aphyllon purpureum Vernon H. Oswald; Lowell Ahart 1993-6-28 5615 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In a depression bordering the road. 1798 Comment
  JEPS49803  Apocynum androsaemifolium Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  JEPS95872  Apocynum cannabinum Vernon H. Oswald and L. Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395: T31N R15E NE1/4 Sect. 3, 4450 ft elevation, sagebrush scrub, volcanic rock substrate 1356 Comment
  CAS-BOT-BC392211  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  CHSC29891  Arabis holboellii var. retrofracta Robin L. Ondricek 1978-5-25 29 Lassen .4 mi N of Lake Forest Development on Co. Rd. A1. 1828 Comment
  JEPS28468  Arabis rectissima var. rectissima George W. Gillett 1957-9-4 1123 Lassen about 1/8 mi below Widow Lake (Widow Lake Trail); Lassen Volcanic National Park 2011 Comment
  NY119565  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  NY119617  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83226 Lassen Above Laufman Ranger Station, Plumas National Forest, 4.5 miles E of U.S. Hwy. 395 Comment
  SEINET2471253  Arceuthobium abietinum R. L. Mathiasen 2008-9-26 2008 -68 Lassen 16.5 km S. of N. entrance to Lassen Nat. Park on State Rte. 89 1940 Comment
  CHSC91321  Arceuthobium campylopodum Lowell Ahart; John Dittes 2005-6-1 11894 Lassen On the west side of Scott Road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.9 miles (air) northwest of Hallelujah Junction. 1465 Comment
  SEINET2471218  Arceuthobium campylopodum R. L. Mathiasen 2009-8-20 2009 -51 Lassen 2 km NW. of jct. of State Rte. 44 and State Rte. 36 on Rte. 44 1563 Comment
  CAS-BOT-BC45902  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45907  Arctostaphylos nevadensis Bill Wilson 1967-7-14 205 Lassen Silver Lake, 20 mi. NW of Susanville 1889 Comment
  CAS-BOT-BC45908  Arctostaphylos nevadensis M. S. Baker; Frank Nutting 1894-1-1 s.n Lassen Lassen Country Comment
  HSC67173  Arctostaphylos patula J. P. Smith, J. O. Sawyer 1972-5-6 5238 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  NY223210  Arctostaphylos patula P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1508.8 Comment
  UC82992  Arctostaphylos patula T. S. Brandegee 1892-7-26 Lassen Milford Comment
  CHSC7703  Arctostaphylos patula subsp. gankinii Beverley J. Wise 1969-5-9 41 Lassen 11 mi. west of Susanville on Forest Serv. Rd. 8246 off Hwy 36. 1524 Comment
  JEPS117259  Arenaria congesta var. congesta Lowell Ahart, John Dittes 2010-7-31 17011 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
  POM101442  Arenaria congesta var. simulans Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC726207  Arenaria congesta var. subcongesta A. A. Heller 1938-6-23 15198 Lassen e Fredonyer Pass 1645 Comment
  UC852268  Arenaria congesta var. subcongesta A. A. Heller 1938-6-23 15198 Lassen e Fredonyer Pss 1645 Comment
  UC1249269  Arenaria congesta var. subcongesta Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8463 Lassen 50 m se Susanville Comment
  UC1299621  Arenaria congesta var. subcongesta Freed W. Hoffman 1946-6-8 911 Lassen Dry Creek, Highway 395 Comment
  UC584297  Arenaria congesta var. suffrutescens G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2206 Lassen just w of the town on Inspiration Point; Susanville 1280 Comment
  JEPS94556  Arenaria kingii var. glabrescens Vernon Oswald and Lowell Ahart 1997-6-24 8633 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CAS-BOT-BC401656  Argemone munita subsp. munita Margaret Williams; Steven Williams 1974-7-26 74 -L-11 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  HSC16736  Argemone munita subsp. rotundata M. T. Milligan 1964-7-17 147 Lassen 2 mi. N on main road from Eagle Lake General Store 1677 Comment
  RSA11786  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3345 Lassen Hills north of Susanville Comment
  CAS-BOT-BC400405  Aristolochia californica Jas. McMurphy 1914-4-1 s.n. Lassen Pitt Comment
  CAS-BOT-BC82117  Arnica chamissonis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49429 Lassen Elysian Valley, west of Janesville 1325 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
  HSC12534  Arnica chamissonis M. S. Baker 28 Jul [year missing] Lassen South of Eagle Lake Comment
  CHSC11767  Arnica cordifolia Wayne O. Baum 1971-6-21 71 -5 Lassen E. slope of Gallatin Peak. 1920 Comment
  POM29781  Arnica cordifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC108027  Arnica cordifolia var. cordifolia Lowell Ahart; John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS118456  Arnica cordifolia var. cordifolia Lowell Ahart, John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS21729  Arnica dealbata Franklin P. Nutting Lassen mts s Eagle Lake Eagle Lake Comment
  JEPS109911  Arnica fulgens Dean W. Taylor 2007-6-14 20128 Lassen Upper Gooch Valley, Forest Road 35N05 (County Road 22) 0.3 miles north of junction with Forest Road 34N45 1889 Comment
  UC1567375  Arnica fulgens G. Schoolcraft 1989-7-18 1977 Lassen 1 mi w, (s of Clark Valley Rd, at Buck's Spring_ Clark's Valley; Buck's Spring) 1859 Comment
  UC1609098  Arnica fulgens Vernon H. Oswald and Lowell Ahart 1993-6-28 5580 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  CAS-BOT-BC82712  Arnica longifolia James Jokerst 1983-7-23 1870 Lassen Grasshopper Valley Quad. Near Madeline Plains 1614 Comment
  UC1609362  Arnica sororia Vernon H. Oswald and Lowell Ahart 1993-7-8 5668 Lassen Halls Flat Rd (33N18) 0.4 mi sw Pittville Rd. (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, between road and open meadow to w) 1706 Comment
  UC29582  Arnica sororia M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Mts. Comment
  JEPS103219  Arnica sororia G. Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  CAS-BOT-BC85003  Artemisia arbuscula subsp. arbuscula Clare B. Hardham 1971-8-22 18370 Lassen Diamond Mountain 2346 Comment
  RSA388738  Artemisia arbuscula subsp. arbuscula Jack Reveal 1984-8-15 s.n. Lassen Dry Flats in YPF along hwy 44, ca. 19 miles north of Susanville 1585 Comment
  SD117633  Artemisia arbuscula subsp. arbuscula Jack L. Reveal 1984-8-15 2842 Lassen Along highway 44, ca. 19 miles north of Susanville 1584 Comment
  UC762616  Artemisia biennis R. F. Hoover 1940-10-10 4681 Lassen Johnstonville Comment
  HSC68803  Artemisia cana subsp. bolanderi Gary Schoolcraft 1979-10-3 198 Lassen In Dry Valley 1/4 mi. west of Dry Valley Gap 1616 Comment
  UCD129274  Artemisia cana subsp. bolanderi Howard Leach Date Unknown s.n. Lassen Madeline Plains. Comment
  CAS-BOT-BC84831  Artemisia cana subsp. cana Elmer I. Applegate 1897-6-3 859 Lassen North end of Madeline Plains, northern Lassen County. Comment
  SEINET10722478  Artemisia ludoviciana subsp. ludoviciana Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 134 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  UCD129363  Artemisia tridentata Beecher Crampton 1960-6-20 5736 Lassen Grass Valley, 4 miles southeast of Black's Mountain Experiment Station, USDA. 1676 Comment
  POM30964  Artemisia tridentata subsp. tridentata Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA0092309  Artemisia tridentata subsp. tridentata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31432 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  SEINET230064  Artemisia tridentata subsp. tridentata Leila M. Shultz, John S. Shultz 1985-6-23 8611 Lassen Long Valley Creek drainage, 5 miles north of Doyle 1305 Comment
  UC1035970  Asclepias cordifolia Helen K. Sharsmith 1955-6-27 4514 Lassen near Fall River Mills (in forest adjacent to State Highway 299); Lassen National Forest 1219 Comment
  CHSC117492  Asclepias fascicularis Lowell Ahart; John Dittes 2016-7-13 21150 Lassen Sides of the overflow, about 50 yards north of the dam, 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 of the southern slope of Big Valley. 1289 Comment
  CHSC5039  Asclepias fascicularis L. B. Barlow 1967-7-11 129 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC60269  Asclepias fascicularis P. V. Caldwell 1972-6-24 298 Lassen Rocky beach off road to beach near the tunnel at Eagle Lake B. S. Comment
  UC1037219  Asclepias fascicularis Leo Whitney 1933-8-10 1580 Lassen near Hall's Flat (ca. 25 mi w of upper end of Eagle Lake); Lassen National Forest 1737 Comment
  JEPS124872 Image available Asclepias speciosa Lynne C. Carter 1967-7-11 81 Lassen 1.1 mi. South of Millford on Hwy 395. West of Honey Lake. Comment
  RSA504836  Aster modestus Bruce Bartholomew, B. Anderson 1988-7-22 4499 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
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Jan 31 2013
  CHSC12949  Astragalus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5811 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  UCD105589  Astragalus Grady L. Webster 1989-5-13 7721 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UCR73170  Astragalus G. L. Webster 1989-5-13 7721 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA624916  Astragalus B. J. Cox, Paul Gallian 1971-6-2 2599 Lassen Hallelujah Jct. intersection of U.S. 395 and Hwy 70. Comment
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Jan 15 2016
  NY790906  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles northwest of Termo 1615.4 Comment
  RSA0006693  Astragalus agrestis H. D. Ripley, R. C. Barneby 1944-5-30 5976 Lassen North of Termo; 1662 Comment
  CHSC77208  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle. 1402 Comment
  CHSC78382  Astragalus andersonii Vernon H. Oswald 2000-6-10 9928 Lassen Near the OHV Staging Area in the Fort Sage Mountains northeast of Doyle. 1444 Comment
  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
  CAS-BOT-BC177434  Astragalus andersonii John Wynn Gillespie; Doris Kildale Gillespie 1930-5-14 9378 a Lassen 5 miles west of Susanville on Red Bluff road Comment
  SEINET10544285 Image available Astragalus anxius R. J. Meinke 1991-7-16 Meinke 6108 Lassen Ash Valley, ca. 25 km W of Madeline, along Ash Valley Rd.; on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sec. 5. In loose, gravelly ash thinly overlying volcanic bedrock. 1550 Comment
  RSA415412  Astragalus canadensis var. brevidens Rockwell 1925-7-1 s.n. Lassen Eagle Lake 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
  UCD53891  Astragalus canadensis var. brevidens A. M. Shapiro 2005-6-10 s.n. Lassen 1 mi. SE Beckwourth Pass. 1524 Comment
  CDA26649  Astragalus curvicarpus T. C. Fuller 1965-6-3 13607 Lassen 1.3 miles west-northwest of Janesville. 0 Comment
  SEINET10486010  Astragalus curvicarpus Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 862 Lassen Collected on road bank 24 mi n of california state line on hwy 395. Comment
  CAS-BOT-BC177847  Astragalus curvicarpus var. curvicarpus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville Comment
  CHSC60899  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Edge of woods between the road and railroad. 1709 Comment
  UC1609292  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-6-14 5519 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd.518,33N89), among low dunes on upper beach btwn road and lake); w shore Eagle Lake 1566 Comment
  UC372641  Astragalus curvicarpus var. curvicarpus Marcus E. Jones, A. M. 1897-6-24 Lassen 10 to 15 mi w from Amedee; w from Amedee 1219 Comment
  CAS-BOT-BC177835  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-16 8346 Lassen Buntingville Comment
  NY803534  Astragalus curvicarpus var. curvicarpus D. W. McNeal 1983-6-5 2839 Lassen Beside Highway 395, 9.2 miles north of the Plumas Co. line Comment
  CHSC37537  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
  HSC82216  Astragalus filipes Thomas W. Nelson, Jane P. Nelson 1980-7-6 6001 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS95714  Astragalus filipes Vernon H. Oswald and L. Ahart 1995-6-19 6883 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. Erect, many-stemmed herbaceous perennial. Corolla pale cream. 1371 Comment
  NY813074  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km south of Doyle on U.S. Highway 395 1430 Comment
  UC1537108  Astragalus filipes Gordon H. True Jr. 1938-7-9 911 Lassen Madeline Plains near Termo; Madeline Plains near Termo 1524 Comment
  CAS-BOT-BC182955  Astragalus filipes T. C. Fuller 1965-8-26 14038 Lassen Haskell Parks range, Diaz Flat, ca. 5 mi. e. of Hayden Hill, n.w. Lassen Co. Comment
  CAS-BOT-BC186864  Astragalus gibbsii Doris Kildale Gillespie 1930-5-12 9348 Lassen Between Susanville and Leavitt Lake Comment
  CDA19718  Astragalus gibbsii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 1341 Comment
  POM24783  Astragalus gibbsii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CDA26675  Astragalus gibbsii Taylor Jun 1938 Lassen Susanville. 0 Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  CAS-BOT-BC229045  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  JEPS91412  Astragalus lemmonii Dean Wm. Taylor with Glenn Clifton 1990-6-12 10881 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  UC13384  Astragalus lemmonii M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC187156  Astragalus lentiginosus var. chartaceus John Thomas Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  CAS-BOT-BC187160  Astragalus lentiginosus var. floribundus Noel H. Holmgren; Patricia K. Holmgren 1980-7-5 9520 Lassen Upper Smoke Creek drainage, 20.4 km (12.7 mi) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale 1580 Comment
  CHSC5281  Astragalus lentiginosus var. floribundus P. Collett 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  UC862859  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 60 Comment
  CHSC60900  Astragalus lentiginosus var. lentiginosus Vernon H. Oswald 1993-7-8 5663 Lassen Pittvile Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  CHSC67215  Astragalus lentiginosus var. platyphyllidius James D. Jokerst 1991-5-28 3291 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, ca. 400 ft E of the highway on steep slopes above the road, S of a small canyon mouth. 1554 Comment
  CDA19719  Astragalus malacus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  CAS-BOT-BC192842  Astragalus pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  JEPS54791  Astragalus pulsiferae J. B. Davy June 1897 Lassen Chat Long Valley, Chat Comment
  UC1567373  Astragalus pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen e slope Shaffer Mtn. 1524 Comment
  CAS-BOT-BC192840  Astragalus pulsiferae H. D. Ripley; R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass, S. Lassen Co. 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
  HSC28311  Astragalus purshii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19269 Lassen Harvey Valley near Cone Springs Comment
  SEINET10841190  Astragalus purshii Mary Susan Taylor 1974-5-4 Taylor 224 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CAS-BOT-BC194087  Astragalus purshii var. purshii Louella Bass 1973-6-12 102 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  RSA121818  Astragalus purshii var. purshii G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 249 Lassen Forest: Lassen. 1784 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
  SEINET10490025  Astragalus purshii var. tinctus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17789 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridentata pinyon pine Jeffery pine along high ridge and sandy wash. 1402 Comment
  RSA339987  Astragalus whitneyi Noel Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 2195 Comment
  CHSC5284  Astragalus whitneyi var. siskiyouensis V. Holt 1945-6-1 Lassen Eagle Lake. Comment
  NY701850  Astragalus whitneyi var. siskiyouensis B. J. Ertter 1987-6-16 7183 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 Comment
  CAS-BOT-BC199135  Astragalus whitneyi var. siskiyouensis H. D. Ripley; R. C. Barneby 1943-6-14 5747 Lassen Above Hidden Valley W of Susanville 1584 Comment
  RSA110171  Astragalus whitneyi var. siskiyouensis H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5747 Lassen Hidden Valley E of Susanville. 1585 Comment
  NY526733  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel 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
  JEPS29746  Atriplex confertifolia Rimo Bacigalupi and L. R. Heckard 1962-5-28 8501 Lassen along road from U.S. 395 past Wendel and Flanagan to Pyramid Lake, Nevada, 2 mi e Wendel junction (n of Honey Lake); , e of Wendel junction 1219 Comment
  CHSC63701  Atriplex heterosperma Vernon H. Oswald 1994-9-6 6467 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. 1490 Comment
  UCD50220  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  UCD97420  Atriplex hortensis E. K. Balls; P. C. Everett 1952-10-10 18138 Lassen 1.7 miles NE of Standish, Hwy. 395 between Susanville and Alturas. 1249 Comment
  UC219338  Atriplex rosea H. M. Hall 1921-9-11 11682 Lassen s side Honey Lake Valley; s side Honey Lake Valley Comment
  UC1035992  Balsamorhiza Helen K. Sharsmith 1955-6-22 4500 Lassen 5 mi beyond, on road to Likely Bue Lake; Warner Mountains, Modoc National Forest 1767 Comment
  CAS-BOT-BC106485  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen Warner Mountains, Modoc National Forest - Five miles beyond Blue Lake on road to Likely 1767 Comment
  JEPS1758  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi w of, along Hwy. 36 Fredonyer Pass 1752 Comment
  UC1035988  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen 5 miles beyond Blue Lake on road to Likely. Warner Mountains, Modoc National Forest Comment
  UC579779  Balsamorhiza hookeri David D. Keck and J. Clausen 1935-6-24 3747 Lassen 2 mi s of Ravendale 1464 Comment
  SEINET10534911  Balsamorhiza incana Billy Joe Cox 1971-6-2 Cox 3102 Lassen 4 mi. S of Adin along CA Hwy. 139 in basalt-clay; valley floor in Artemisia. 1341 Comment
  CHSC5234  Barbarea orthoceras A. Santos 1946-6-12 Lassen Eagle Lake. Pine Creek. 1584 Comment
  JEPS94602  Barbarea orthoceras Vernon H. Oswald and Lowell Ahart 1997-5-27 8501 Lassen on Forest Route 38N04 0.1 mi e Hwy. 139 ((between Hwy 139 near Willow Springs Guard Station and Coyote Flat), n of Susanville) 1546 Comment
  SEINET11193258  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, intersection of Hwy 139 and Eagle Lake Road. 1494 Comment
  CHSC63727  Beckmannia syzigachne Vernon H. Oswald 1994-9-6 6471 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. 1490 Comment
  NY833352  Berteroa incana A. Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles west of highway 395 on highway 70 then 5.5 road miles north on Scott Road 1494 Comment
  JEPS113921  Berteroa incana William Harnach 2006-5-31 1229 Lassen Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch). Comment
  CHSC111100  Bidens cernua Lowell Ahart; John Dittes 2012-7-9 18295 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CDA10495  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC96712  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CAS-BOT-BC413000  Bistorta bistortoides A. M. Vollmer; L. Beane 1953-7-1 65 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC413002  Bistorta bistortoides L. G. Bennett 1967-7-14 174 Lassen 5.3 miles from the junction of Highway 44 and the Silver Lake rd. on Highway 44 1950 Comment
  HSC22872  Bistorta bistortoides John Pratt 1970-6-13 8 Lassen 1677 Comment
  CAS-BOT-BC127957  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC127971  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CAS-BOT-BC128034  Blepharipappus scaber John Thomas Howell 1976-7-20 52032 Lassen In dried depression. about 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC93244  Blepharipappus scaber John Dittes; Scott Chamberlain 2004-6-28 1006 Lassen Modoc Plateau; Long Valley; ca. 2.3 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 2.7 air-miles west of Hwy 395, ca. 1.2 air-miles east of Plumas County line; near meadow edge. 1443 Comment
  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
  SFV3785  Blepharipappus scaber I. L. Wiggins, D. B. Wiggins 1961-6-11 16355 Lassen East of Eagle Lake, 2 miles north of Susanville. Roadside. 1340 Comment
  SJSU4600  Blepharipappus scaber J. W. Tilden 1958-6-27 1287 Lassen Madeline Comment
  UC1924224  Blepharipappus scaber Debra Valov 2004-6-8 2004250 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC604683  Blepharipappus scaber Farris Farris 1935-5-20 Lassen Susanville 1341 Comment
  POM223718  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3725 Lassen 5 miles south of Likely. 1402 Comment
  SEINET3132721  Blepharipappus scaber J. L. Strother 1970-5-13 953 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  CAS-BOT-BC14092  Boechera pauciflora John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50687 Lassen Sierra Nevada. South and southeast of Diamond Mountain. 2286 Comment
  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
  CHSC25300  Boechera puberula Pauleen Broyles 1977-5-30 143 Lassen Spencer's Basin ca 8 km n of Herlong. 1770 Comment
  CHSC91294  Boechera retrofracta Lowell Ahart; John Dittes 2005-6-2 11926 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  UC1143032  Boechera retrofracta L. R. Short 1936-6-1 S- 354 Lassen Burgess Spring Experimental Range Lassen National Forest 1859 Comment
  CAS-BOT-BC25507  Boechera retrofracta Doris Kildale Gillespie 1930-5-14 9383 Lassen 5 miles west of Susanville. Comment
  CAS-BOT-BC25935  Boechera suffrutescens Blanche Clear 1940-7-25 s.n. Lassen Volcanic Park. Cinder Cone. Comment
  RSA32754  Boisduvalia macrantha A. A. Heller 1938-7-28 15295 Lassen About a mile east of Westwood 1524 Comment
  RSA0011460  Boisduvalia macrantha Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46980 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  UC1537621  Bolboschoenus maritimus Gordon H. True Jr. 1939-7-6 1025 Lassen George Bailey Ranch Honey Lake Valley 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
  HSC103654  Brickellia californica Thomas W. Nelson, Jane Nelson 1985-8-10 8021 Lassen Along west side of Silver Lake. 1829 Comment
  SEINET8193957  Brodiaea congesta J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch. Comment
  CHSC92737  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  RSA0065492  Bromus breviaristatus Marion P. Harthill 1971-6-21 208 Lassen Susanville. 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
  CHSC27122  Bromus briziformis Robert A. Schlising 1978-6-28 3295 Lassen E of Eagle Lake at Lower Dry Lake. 1645 Comment
  CHSC36462  Bromus briziformis Jeffrey R. Peek 1982-6-1 21 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of jct. Hwy 139 and Ravendale Rd. Comment
  CHSC80306  Bromus briziformis Jeanne Boze 1981-6-11 101 Lassen About 4 m from road, back from Horse Lake Road, 5.5 mi from Hwy 139. 1676 Comment
  SEINET8506610  Bromus briziformis D. W. Taylor 2005-6-29 19380 Lassen Piute Creek, 3 miles West from western edge, Susanville 1311 Comment
  CAS-BOT-BC149500  Bromus briziformis Clare B. Hardham 1961-6-17 7507 Lassen Susanville Aturas Road. Lava Flows. Route 395. 1432 Comment
  CHSC118475  Bromus carinatus var. marginatus Don Lepley 2016-7-20 Lassen Eagle Lake Ranger District. Uphill side of Road 29N43.2 at outlet of Aspen Flat (tributary to Baxter Creek). 2026 Comment
  UC1024682  Bromus ciliatus Leo Whitney 1934-7-26 2164 Lassen 7-8 mi sw of Eagle Lake (near Bridge Creek, Lassen National Forest, Bridge Creek Camp); Lassen National Forest, Bridge Creek Camp 1737 Comment
  JEPS95805  Bromus commutatus Vernon H. Oswald and L. Ahart 1999-6-9 9750 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  RSA127004  Bromus commutatus H. S. Yates 1936-8-11 6074 Lassen Bexter Creek [Baxter? creek]. Susanville. 1280 Comment
  UC1037137  Bromus diandrus Leo Whitney 1935-6-28 3371 Lassen Bieber Comment
  OBI82789  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
  UCD59065  Bromus orcuttianus L. Whitney 1935-6-25 s.n. Lassen Ashurst Mt. Comment
  UC60732  Bromus secalinus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  CHSC31983  Bromus tectorum L. Ahart; J. T. Howell 1974-7-9 535 Lassen Along the rd 4.5 mi w of Susanville. 1584 Comment
  CHSC36476  Bromus tectorum Margaret E. Halloran 1982-6-6 13 Lassen N of Eagle Lake Field Station on a point directly e of Pelican Pt. Comment
  UC1137129  Bromus tectorum August L. Hormay 1932-5-20 Lassen Lassen National Forest, Hat Creek Hat Creek; Lassen National Forest, Hat Creek Comment
  RSA128308  Callitriche hermaphroditica P. H. Raven, Otto T. Solbrig 1958-6-17 13260 Lassen Along U.S. Hwy 395, 2.1 miles NE of Standish. Comment
  JEPS124786 Image available Callitriche palustris B. Corwin 1964-7-1 124 Lassen Under bridges between Bieber and New Bieber on rte. 299. Comment
  CHSC66239  Callitriche verna Vernon H. Oswald; Lowell Ahart 1996-6-24 7870 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In or along Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  CHSC12426  Calocedrus decurrens Anne Linda Brisk 1969-6-20 12 Lassen 5.5 mi S of ELBS on Road 5.16.2. 1920 Comment
  CHSC27601  Calocedrus decurrens George Deniso 1978-7-24 99 Lassen Roadside between Gallatin Peak and Miners Bay, SE side of Eagle L. 1597 Comment
  HSC15373  Calochortus bruneaunis M. T. Milligan 1964-8-6 209 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  CHSC4430  Calochortus leichtlinii K. R. Stern 1967-7-1 2473 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  CHSC4921  Calochortus leichtlinii L. G. Bennett 1967-6-24 24 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  HSC23523  Calochortus leichtlinii R. Carter 1967-6-27 552 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  UC3407  Calochortus leichtlinii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  RSA377380  Calochortus leichtlinii Christopher Davidson 1974-7-25 2498 Lassen Lassen Volcanic National Park, road to Juniper Lake 2134 Comment
  SEINET3363841 Image available Calochortus leichtlinii Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Perkin's Ranch 1829 Comment
  CHSC27653  Calochortus macrocarpus Cindy Prouty 1978-7-26 9 Lassen Lower Dry L.; SE of Eagle L. 1645 Comment
  SEINET8197399  Calochortus macrocarpus M. J. Williams 1969-6-22 s.n. Lassen N of Litchfield. 1372 Comment
  JEPS17206  Calyptridium umbellatum Frances D. Payne 1929-7-12 101 Lassen Lost Lake, Camp I Lost Lake; Warner Mountains, , Camp I 2286 Comment
  CHSC107327  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2011-6-20 17492 Lassen Depression in meadow, about 40 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC99737  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2008-6-20 14905 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
  HSC30047  Camassia quamash subsp. breviflora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19197 Lassen Harvey Valley near Cone Springs Comment
  UC1608997  Camassia quamash subsp. breviflora Vernon H. Oswald and Lowell Ahart 1993-6-3 5475 Lassen between Poison Lake and Susanville (3.7 mi n of Hwy 44 at spur road 32N02E, on se side of Pine Creek Valley); Champs Flat Road, Pine Creek Valley 1731 Comment
  CAS-BOT-BC497557  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles east of Westwood, In the Arid Transition Life Zone 1463 Comment
  OBI76938  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along hwy 395 ca. 6.6 mi S of Karlo Rd quad 1220 Comment
  CHSC4969  Camissonia R. Carter 1967-6-23 540 Lassen Along rd to Murrer's Meadow. 1584 Comment
  UCR201582  Camissonia Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  NY850975  Camissonia boothii subsp. alyssoides Mrs. C. C. Bruce 06 1898 2139 Lassen Shumway Comment
  NY851232  Camissonia claviformis var. cruciformis A. A. Heller 1938-6-23 15211 Lassen U.S. Highway #395, about midway between Mapes and Secret Valley 1372 Comment
  CHSC93568  Camissonia contorta Lowell Ahart; John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  CHSC93694  Camissonia pubens Lowell Ahart; John Dittes 2005-6-2 11993 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  SEINET10903367  Camissonia pusilla David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17799 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentat, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC160834  Camissonia tanacetifolia subsp. quadriperforata W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC160858  Camissonia tanacetifolia subsp. tanacetifolia Mrs. C. C. Bruce 1898-6-1 2203 Lassen Susanville Comment
  CAS-BOT-BC160859  Camissonia tanacetifolia subsp. tanacetifolia A. M. Vollmer; L. Beane 1953-7-1 41 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC160873  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-6-10 11883 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC160876  Camissonia tanacetifolia subsp. tanacetifolia R. K. Gierisch; D. H. Esplin 1969-7-18 3550 Lassen Near Modoc National Forest. Madeline Plains 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
  RSA60365  Camissonia tanacetifolia subsp. tanacetifolia E. K. Balls 1950-5-9 15954 Lassen 0.5 mi. south of Modoc Co. Line, Highway 395 1220 Comment
  CHSC117199  Capsella bursa-pastoris Lowell Ahart; John Dittes 2016-6-7 20980 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC972184  Cardamine nuttallii Milo S. Baker 1952-5-23 12430 Lassen Highway 36 1/2 mi w Fredonyer Pass; w of Fredonyer Pass 1752 Comment
  CAS-BOT-BC17908  Carex angustata George Wilson Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. South Shore of Snag Lake. 100 yards from lake. 1850 Comment
  UC142947  Carex angustata A. L. Hormay 1941-6-18 5 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 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
  CAS-BOT-BC19067  Carex aurea John Thomas Howell 1976-7-19 51969 Lassen Sierra Nevada. On Gold Run Creek southwest of Susanville. 1386 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
  CHSC68770  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8502 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  JEPS107438  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  SEINET10437847  Carex douglasii B. L. Wilson, P. Zika 2011-8-7 16803 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  UC1736284  Carex douglasii Dean W. Taylor 1974-6-14 3716 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  HSC95229  Carex echinata subsp. echinata Gordon Leppig, Tony LaBanca 1997-6-28 517 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET7485202 Image available Carex filifolia Barbara L. Wilson, Danna Lytjen and Nick Otting 2005-1 11451 Lassen northeast part of Round Corral Reservoir, north of Buckhorn Road about a mile and a half west of Pyramid Lake 1876 Comment
  HSC48360  Carex filifolia var. erostrata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19171 Lassen Open pasture in Harvey Valley near Cone Springs Comment
  SEINET7558601 Image available Carex filifolia var. erostrata Richard Driscoll 1965-5-31 s.n. Lassen Lassen. Bogard Ranger Sta., Harvey Valley, NW of Susanvile. 1707 Comment
  HSC103600  Carex fracta Thomas W. Nelson, Jane Nelson 1985-8-10 8011 Lassen Along north side of Silver Lake 1829 Comment
  SEINET7587564 Image available Carex heteroneura L. P. Janeway 2003-7-24 7915 A Lassen Swain Mountain 7.5' Quad, High Cascade Range, along Forest Service Road 30N14 1.1 km from Road 30N21. Small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  CHSC61065  Carex heteroneura var. heteroneura Vernon H. Oswald; 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
  CHSC85976  Carex integra L. P. Janeway 2003-7-24 7916 Lassen High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  HSC95182  Carex interior Gordon Leppig 1998-8-17 1055 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  CAS-BOT-BC31697  Carex mariposana John Thomas Howell; Gordon H. True 1973-7-31 50045 Lassen On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  UC1133499  Carex microptera A. Simontacchi 1940-7-3 917 Lassen 3.5 mi wsw Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC31946  Carex microptera Clare B. Hardham 1971-8-22 18373 Lassen Streamside, Diamond Mt. 2346 Comment
  CHSC87113  Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC1583950  Carex multicaulis G. Schoolcraft 1990-5-15 2049 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  CHSC25910  Carex nebrascensis K. R. Stern 1967-6-25 2429 Lassen Road to Eagle Lake Biological Station, Dean's Meadow near Gallatin Peak, ca. 3 mi. S of Eagle Lake. 1676 Comment
  JEPS114767  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-20 14953 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS114853  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-22 15019 Lassen N side of levee, about 90 yds E of the tall poles, in Big Valley, about 3.5 mi NE of the Headquarters at Ash Creek State Wildlife Area, about 5.5 mi (air) NE of Bieber 1260 Comment
  JEPS120112  Carex nebrascensis Lowell Ahart, John Dittes 2012-7-9 18298 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET7568738 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7914 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  HSC103619  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8014 Lassen Along north side of Silver Lake 1829 Comment
  HSC103652  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8016 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC119044  Carex pellita Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1828 Comment
  CHSC66270  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-24 7892 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the southern-most spring on the E side of the meadow 1633 Comment
  CHSC75552  Carex pellita Vernon H. Oswald; Lowell Ahart 1999-6-9 9738 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395. 1353 Comment
  CHSC77250  Carex praegracilis G. Schoolcraft 1995-5-23 2487 Lassen Three Springs. 1554 Comment
  UC190401  Carex praegracilis M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CAS-BOT-BC118742  Carex preslii Alice Eastwood; John Thomas Howell 1940-6-16 8338 Lassen Janesville Comment
  CHSC53660  Carex rossii L. P. Janeway; Oscar V. Janeway, Lillian D. Janeway 1987-5-27 2101 Lassen Near S end of Eagle Lake. Along Eagle Lake Rd at jct with road to Pikes Pk. 1569 Comment
  JEPS122357  Carex simulata Joseph Broberg, Jaycee Leonard 2012-7-25 CA 320 -115 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left onto Cold Springs road. Collection is at Dodge Springs Comment
  CHSC85987  Carex subfusca L. P. Janeway 2003-7-24 7915 Lassen High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  SD130912  Carex subfusca John Thomas Howell, Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada Mountains; Diamond Range; Gold Run Creek Road south of Susanville; transition zone forest in areas of granitic rock. 1584 Comment
  JEPS28336  Carex utriculata George W. Gillett 1957-7-22 885 Lassen near campsite at s end of lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  HSC103651  Carex utriculata Thomas W. Nelson, Jane Nelson 1985-8-10 8009 Lassen Along north side of Silver Lake 1829 Comment
  HSC95282  Carex vesicaria Gordon Leppig 1998-6-12 932 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET7579960 Image available Carex vesicaria George W. Gillett 1957-7-22 879 Lassen Lassen Volcanic National Par, Snag Lake, matin of gravel bars along south shore. 1850 Comment
  CAS-BOT-BC114880  Carex whitneyi John Thomas Howell; Gordon H. True 1973-8-1 50201 Lassen Ca 3 mi SE of Diamond Mt. E slope of Diamond Range S of Susanville. 2194 Comment
  CHSC106570  Castilleja angustifolia K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  CHSC14085  Castilleja angustifolia K R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5841 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  JEPS107801  Castilleja angustifolia Lowell Ahart, John Dittes 2005-6-2 11978 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the interesection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
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Oct 20 2009
  JEPS81474  Castilleja angustifolia M. S. Taylor 1982-5-29 4568 Lassen ca 0.5 mi n dirt road paralleling Hwy. 395 jct. with Scott Rd. (ca 20 mi n of Reno) Comment
  RSA38476  Castilleja angustifolia Philip A. Munz 1947-5-19 11866 Lassen 27.7 miles south of Ravendale. 1311 Comment
  CAS-BOT-BC249614  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-21 44 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  CHSC91291  Castilleja applegatei subsp. pinetorum Lowell Ahart; John Dittes 2005-6-2 11929 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  UC1137290  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  SBBG7046  Castilleja campestris H. and M. Dearing 1939-6-6 3565 Lassen marsh on Pitt River, Bieber Comment
  CHSC23901  Castilleja lacera A. W. Harvilik 1967-7-8 39 Lassen Collected in Murrer's Meadow ca. 3 mi se of Eagle Lake Biological Station. 1524 Comment
  UC1609288  Castilleja lacera Vernon H. Oswald and Lowell Ahart 1993-6-28 5575 Lassen 0.2 mi n Hwy. 44, e side of Grays Valley (Harvey Valley Rd (33N02), e of Poison Lake); Grays Valley 1749 Comment
  CHSC63419  Castilleja linariifolia Vernon H. Oswald 1994-7-8 6369 Lassen Wildlife Viewing Area along Hwy. 139 on the NE shore of Eagle Lake, 5.9 mi S of County Rd. 201 (A1). 1557 Comment
  UC26450  Castilleja linariifolia Milo S. Baker 1894-7-25 Lassen Eagle Lake 1524 Comment
  CAS-BOT-BC244885  Castilleja miniata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49417 Lassen Elysian Valley, west of Janesville. Plants of the Sierra Nevada 1325 Comment
  JEPS10806  Castilleja miniata Brown and Wieslander 1922-7-23 67 Lassen Martin Springs; Eagle Lake Comment
  SEINET14062605  Castilleja miniata C. G. Gulling 1905-1 1568 Lassen Big Meadows. Comment
  CAS-BOT-BC241000  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-BC241002  Castilleja pilosa Doughitt; Parkison 1916-6-8 4 Lassen Lassen National Forest. Harvey Valley 1676 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
  UC1012185  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen 5 mi s Ravendale (Route 395) 1645 Comment
  RSA505409  Castilleja psittacina R. C. Bacigalupi, S. Galen Smith 1957-6-28 6004 Lassen 5.9 miles south of Madeline. 1616 Comment
  CHSC112415  Castilleja tenuis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18773 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
  CHSC93692  Castilleja tenuis Lowell Ahart; John Dittes 2005-6-1 11902 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
  CHSC93698  Castilleja tenuis Lowell Ahart; John Dittes 2005-6-2 11962 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  JEPS114743  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-19 14874 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
  RSA0059451  Castilleja tenuis Lowell Ahart, John Dittes 2011-6-20 17499 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1012485  Castilleja tenuis Francis W. Pennell 1940-6-7 25727 Lassen 8 mi e Nubieber (Route 299) 1310 Comment
  JEPS103212  Castilleja tenuis G. Schoolcraft 1993-6-29 2314 Lassen Ash Valley RNA 16 miles east of Adin, CA 1554 Comment
  SEINET196483  Ceanothus cordulatus C. B. Heisser 1947-7-13 s.n. Lassen Near Westwood Comment
  SEINET5339273  Ceanothus cuneatus W. Priest 1956-4-27 s.n. Lassen 20 mi south of Lassen Park turnoff, Ca. Hwy 36. 762 Comment
  CAS-BOT-BC52051  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen About 4 1/2 mis. West of Bieber along Highway #299 Comment
  CHSC6249  Ceanothus prostratus J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2133 Comment
  HSC42297  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen 4.5 mi W of Bieber along Hwy. 299 Comment
  HSC75914  Ceanothus prostratus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19248 Lassen 3 mi. N of Westwood 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
  UC1071527  Ceanothus prostratus K. Bradshaw 1939-5-27 233 Lassen Black Mt. Experimental Forest - Plot 39-1, s end Lassen National Forest, Halls Flat Quad. Comment
  CHSC6250  Ceanothus velutinus L. Harman 1946-6-23 Lassen Roop mountain. Eagle Lake. 2133 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
  CAS-BOT-BC52438  Ceanothus velutinus var. velutinus John Thomas Howell 1924-8-13 637 Lassen Between Chester and Westwood Comment
  CAS-BOT-BC52440  Ceanothus velutinus var. velutinus Brighton C. Cain 1925-8-24 115 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  OBI4702  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On N side of old rd to Susanville, 1 mi W of Johnstonville Comment
  CDA36156  Centaurea maculosa CDFA Staff Jul 1998 Lassen Susanville. 0 Comment
  RSA121127  Centaurea repens E. Sawyer 1935-6-27 239 Lassen 5 miles NNE of Beckwith Pass Comment
  RSA97606  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley Comment
  SEINET13331053 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1959-10-15 s.n. Lassen Roadside, E. of Pitt River on road to Lookout, about 2 mi. N. of Bieber Comment
  SEINET13331058 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 mi. N. of Bieber, Big Valley Comment
  SEINET13331314 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  JEPS95910  Centromadia pungens subsp. pungens Lowell Ahart 1999-9-13 8224 Lassen on the north side of Mapes Road; about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  CAS-BOT-BC279595  Centromadia pungens subsp. pungens Gladys L. Smith; Margaret Williams; Loring Williams; Charles Smith 1983-9-15 8392 Lassen Along Lassen 3-A, the Susanville By-pass for Rte. 395 1219 Comment
  POM101579  Cerastium glomeratum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC29948  Cercocarpus ledifolius var. ledifolius Robin L. Ondricek 1978-6-8 45 Lassen Ridge E of Lower Dry Lake. 1767 Comment
  JEPS28675  Cercocarpus ledifolius var. ledifolius George W. Gillett 1957-7-26 902 Lassen Butte Lake, Lassen Volcanic National Park Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  JEPS112814  Chaenactis douglasii Dean W. Taylor 1974-6-14 3723 Lassen Plumas National Forest; Janesville Grade Road, at summit ca. 4 mi SSW of Janesville 1706 Comment
  CDA10715  Chaenactis douglasii var. achilleifolia T. C. Fuller 1959-7-7 Lassen Highway 395, 1.6 miles south of Ravendale. 0 Comment
  UCR7839  Chaenactis douglasii var. douglasii Marilyn Malin 1968-6-19 250 Lassen Eagle Lake Biological Station[Chico State Biological Station], 50 ft. NE of the A-Frame cabin 59 Comment
  CAS-BOT-BC276617  Chaenactis douglasii var. douglasii John Thomas Howell 1976-7-20 52024 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles W of Fredonyer Pass 1432 Comment
  CDA10717  Chaenactis glabriuscula var. megacephala T. C. Fuller 1963-6-1 10628 Lassen East side of road to Hall s Flat, 4.9 miles south of Pittville. 0 Comment
  UC1567442  Chaenactis stevioides G. Schoolcraft 1989-5-31 1886 Lassen about 4 mi n of Wendel Rd. (along Skedaddle Ranch Road) 1493 Comment
  CHSC19727  Chamaebatiaria millefolium Mary E. Meyer 1973-7-7 14 Lassen Located west of ELBS water tower. Comment
  NY758642  Chamaebatiaria millefolium G. Schoolcraft 1981-7-29 554 Lassen On south slope of McDonald Peak 2134 Comment
  CHSC5919  Chamaesaracha nana M. West 1946-6-18 Lassen Spalding's, Eagle Lake. 1554 Comment
  CHSC58840  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1992-7-16 5114 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. Beds of creek and reservoir. 1691 Comment
  JEPS114649  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart, John Dittes 2008-6-20 14913 Lassen On the levee road and in vernal pools, 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
  UC1609091  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and Lowell Ahart 1993-7-8 5660 Lassen 1.9 mi n Hwy 44 (Pittville Rd., on se edge of lake, between the rr and the lake); Poison Lake 1709 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  SJSU10817  Chamaesyce serpyllifolia C. L. Kline 1965-7-12 190 Lassen 8.3 mi NE of Susanville by Hwy 139 1036 Comment
  JEPS95711  Chenopodium album Vernon H. Oswald and L. Ahart 1995-8-14 7180 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  RSA233736  Chenopodium botrys R. F. Thorne, C. W. Tilforth 1969-9-6 39259 Lassen along Long Valley Creek, c. 14 mi. SE of Milford. 1311 Comment
  UC1587041  Chenopodium fremontii G. Schoolcraft 1991-7-31 2206 Lassen just s of Shinn Peak 2103 Comment
  RSA756362  Chenopodium hians Barbara Ertter 1988-7-25 7871 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2226 Comment
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  CHSC66862  Chenopodium rubrum var. humile Vernon H. Oswald; Lowell Ahart 1996-9-10 8279 Lassen Mountain Meadows Reservoir SW of Westwood. On the embankment of the railroad at the northwest edge of the reservoir. 1539 Comment
  SBBG18321  Chorizanthe watsonii C. B. Hardham 1961-6-17 7499 Lassen Baxter Crk, S of Susanville 1524 Comment
  CAS-BOT-BC247862  Chorizanthe watsonii John Thomas Howell 1962-6-19 37885 Lassen 3 mi. s. of Hallelujah Junction 1524 Comment
  UCSB17200  Chorizanthe watsonii Hardham, Clare 1961-6-17 Lassen Baxter Cr. south of Susanville, Sierra Nevada Mountains 1524 Comment
  CAS-BOT-BC36277  Chrysolepis sempervirens John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49413 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC36325  Chrysolepis sempervirens George W. Gillett 1957-7-26 905 Lassen Point of rocks wets of Butte Lake outlet and above trail 1844 Comment
  CHSC21064  Chrysolepis sempervirens M. S. Taylor 1975-7-16 842 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. Comment
  CHSC5249  Chrysolepis sempervirens P. Balch 1955-6-12 Lassen Eagle Lake. Forest between Eagle and Pittville Rd. Comment
  SEINET7450655 Image available Chrysopsis villosa var. minor R. R. Halse 2010-8-26 8091 Lassen Along State HWY 70 at Beckwourth Pass about 4.3 miles west of its junction with US HWY 395 or 1.6 miles east of Sierra Valley 1584 Comment
  RSA3395  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile east of Termo 1646 Comment
  CDA19740  Chrysothamnus viscidiflorus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  CAS-BOT-BC106024  Chrysothamnus viscidiflorus subsp. lanceolatus Ynez Whilton Winblad 1935-9-23 s.n. Lassen Susanville Comment
  UC1483877  Chrysothamnus viscidiflorus subsp. lanceolatus G. Schoolcraft 1979-8-23 182 Lassen Painter Flat Comment
  CAS-BOT-BC100756  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 2872 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  RSA0094567  Chrysothamnus viscidiflorus subsp. puberulus Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31420 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  CHSC42146  Chrysothamnus viscidiflorus subsp. viscidiflorus C. E. Laver 1985-8-14 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. Along roadsides. 2194 Comment
  UC1136976  Chrysothamnus viscidiflorus subsp. viscidiflorus L. R. Short and Wm. Gansberg 1936-8-13 S- 494 Lassen Lassen Forest, Burgess Spr. Exp. Range 1770 Comment
  UC761819  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-9-29 4644 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  JEPS17735  Chylismia claviformis subsp. cruciformis Rimo Bacigalupi with G. T. Robbins 1955-7-21 5424 Lassen s Smoke Cr. Ranch Rd. (17.5 mi e of US 395 and 1.3 mi w of Nev. State line); Rush Cr. 1353 Comment
  CAS-BOT-BC184828  Cinna latifolia Clare B. Hardham 1971-8-22 18408 Lassen Diamond Mountain. 2133 Comment
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  CHSC115576  Cirsium Lowell Ahart; John Dittes, Joe DiSalvo 2015-7-14 20322 Lassen On the south side of the levee road, about 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1260 Comment
  CAS-BOT-BC284384  Cirsium arvense John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49418 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC277934  Cirsium canovirens T. C. Fuller 1959-7-7 2739 Lassen Hwy. 395 6 miles/north/road to Karlo Comment
  CDA1174  Cirsium cymosum G. D. Barbe 1982-7-13 3882 Lassen Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd. 0 Comment
  CAS-BOT-BC278005  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, on highway 299 Comment
  JEPS30610  Cirsium cymosum var. cymosum Peter H. Raven with Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  JEPS30609  Cirsium douglasii var. breweri Peter H. Raven and Otto T. Solbrig 1958-6-17 13280 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  CDA1261  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 -C Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  JEPS59280  Cirsium occidentale var. candidissimum W. L. Jepson 1918-8-2 7796 Lassen Honey Lake Valley 1219 Comment
  CDA1491  Cirsium ochrocentrum G. D. Barbe 1982-7-12 3878 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 Comment
  CDA1526  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC286308  Cirsium scariosum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49427 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC286309  Cirsium scariosum Louella Bass 1973-6-17 117 Lassen Elysian Valley 1325 Comment
  SBBG7961  Cirsium scariosum var. americanum H. and M. Dearing 1938-7-1 2242 Lassen W of Susanville Comment
  CDA37717  Cirsium undulatum Breckenridge/Mitchell 2007-7-11 s.n. Lassen Madeline Plains, along Westside Road, from historic Basque homestead. 0 Comment
  CAS-BOT-BC233916  Cistanthe umbellata Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1676 Comment
  CAS-BOT-BC123818  Clarkia lassenensis Alice Eastwood; John Thomas Howell 1940-6-11 7983 Lassen Big Valley Mts. Comment
  CHSC59759  Clarkia rhomboidea Mary Meyer 1980-8-5 Lassen 2148 Comment
  CHSC61223  Clarkia stellata P. V. Caldwell 1972-6-15 225 Lassen Eagle Lake: W face on Black Mtn. 1706 Comment
  UC1567444  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi n Wendel Rd. (along Skedaddle Ranch Rd) 1463 Comment
  POM93741A  Cleomella parviflora Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1533121  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen about 1 mi w CA-NV stateline (along Smoke Creek Road) 1341 Comment
  CAS-BOT-BC423222  Cleomella plocasperma Luella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  CDA25307  Cleomella plocasperma T. C. Fuller 1962-8-28 9474 Lassen Road to Wendell, 1 mile northwest of Herlong Siding, northeast of Honey Lake. 0 Comment
  SEINET5767254  Cleomella plocasperma D. S. Mapes 1942-7-13 s.n. Lassen 2 1/2 miles SW of Wendel, Honey Lake Basin 1067 Comment
  CHSC71101  Collinsia parviflora Vernon H. Oswald; Lowell Ahart 1998-5-22 9126 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  HSC97103  Collinsia parviflora L. Ahart 2005-6-1 11858 Lassen 1/2 mile west of Scott Rd., Long Valley, about 2 air miles NW of the intersection of Scott Rd. and Hwy. 70. 3.9 air miles NW of Hallelujah Junction 1449 Comment
  JEPS107462  Collinsia parviflora Lowell Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  HSC63776  Collinsia parviflora Teresa Prendusi 1980-4-30 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  CHSC6198  Collomia grandiflora P. Collett 1946-6-24 Lassen Spalding's, Eagle Lake. 1554 Comment
  CHSC7767  Collomia grandiflora Beverley J. Wise 1969-6-1 75 Lassen N.E. city limits of Susanville, on Chestnut, at intersection with Hwy 139. 1310 Comment
  NY963534  Collomia grandiflora N. H. Holmgren 1980-7-4 9502 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  HSC63767  Collomia grandiflora Teresa Prendusi 1980-5-19 Lassen 1 mi. N of Saddle Rock, 16 mi. S of Ravendale along Hwy. 395 1524 Comment
  CHSC6199  Collomia tinctoria J. B. Kimsey 1946-6-13 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  HSC30185  Collomia tinctoria D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19261 Lassen Harvey Valley near Cone Springs Comment
  RSA122984  Collomia tinctoria L. R. Short, J. Warren 1936-6-10 s- 382 Lassen Burgess Spr. Exp. Range 1790 Comment
  JEPS121290  Conium maculatum Lowell Ahart, John Dittes 2013-7-23 18901 Lassen W side of the road levee, about 80 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET11242313  Conringia orientalis N. H. Holmgren, P. K. Holmgren 1980-1 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 miles) W of Hwy 395, from a turnoff 10.3 km (6.4 miles) S of Madeline. 1620 Comment
  POM33281  Conyza canadensis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC6277  Corallorhiza maculata A. Santos 1946-7-11 Lassen Silver Lake. 1981 Comment
  JEPS17409  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 m <e?> of Nevada line, 17.5 m w of US Hwy 395); drainage of Rush Creek Comment
  CAS-BOT-BC212206  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  CHSC118478  Corydalis aurea Allison Sanger 2015-5-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Outlet of Papoose Meadows, above rock weir blocking outlet. 1624 Comment
  CHSC93564  Crepis acuminata Lowell Ahart; John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  UC773983  Crepis acuminata L. R. Short 1936-7-9 S- 509 A Lassen Burgess Spring Experiment Range Lassen <National> Forest 1818 Comment
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  CHSC29884  Crepis bakeri Robin L. Ondricek 1978-7-15 98 Lassen On the ne and nw sides of Lower Dry Lake in the area where the trees begin. 1645 Comment
  CHSC60813  Crepis bakeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 Lassen N of Hwy 44 on Rd. 33N06, on the flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In woods bordering the road. A drying vernal pool is located in a forest opening nearby. 1798 Comment
  POM230908  Crepis intermedia G. Ledyard Stebbins, J. A. Jenkins 1937-7-10 2296 Lassen Crest of range head of Stony Ridge, west of Milford 1951 Comment
  UC581207  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2340 Lassen s-facing slope 3 mi e Champs 1780 Comment
  CAS-BOT-BC291551  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-11 2328 Lassen Black Mountain 1 1/2 miles from summit 1889 Comment
  UC1609227  Crepis occidentalis subsp. conjuncta Vernon H. Oswald and Lowell Ahart 1993-6-28 5606 Lassen Rd 35N04 n Hwy 44 (nw edge of valley, ne of Poison Lake); Harvey Valley, Aspen Well 1725 Comment
  CAS-BOT-BC290750  Crepis occidentalis subsp. occidentalis Doris Kildale Gillespie 1930-5-12 9337 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC290752  Crepis occidentalis subsp. occidentalis John Thomas Howell 1934-6-10 11872 Lassen Janesville Comment
  CAS-BOT-BC376564  Crepis occidentalis subsp. occidentalis M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  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
  CAS-BOT-BC299713  Crocidium Louella Bass 1973-4-22 23 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC13599  Cryptantha J. Pitts 1972-6-23 268 Lassen Ca. 40 yds e of Shepherd's Hall, Eagle Lake Field Station. Comment
  RSA647827  Cryptantha Marion P. Harthill 1971-6-20 206 Lassen Susanville Comment
  CHSC23567  Cryptantha affinis W. O. Baum 1971-7-6 28 Lassen E slope of Gallatin Peak. 1950 Comment
  JEPS94987  Cryptantha ambigua Vernon Oswald and Lowell Ahart 1997-6-24 8593 Lassen s of Susanville (1.2 mi e of Gold Run Road (29N10), on n side of Diamond Mountain on Forest Road 29N43); Diamond Mountain, Forest Road 29N43 1685 Comment
  CHSC5014  Cryptantha circumscissa L. G. Bennett 1967-7-5 111 Lassen Immediate vicinity of Eagle Lake Biological Station, Eagle Lake. 1554 Comment
  CHSC7765  Cryptantha circumscissa Beverly J. Wise 1969-5-18 77 Lassen 17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  SDSU20525  Cryptantha echinella Nuri Benet-Pierce, John P. Pierce 2012-7-14 526 Lassen Diamond Mountain. 2023 Comment
  UCD55289  Cryptantha flaccida Ellen Dean; Gary Schoolcraft 2006-5-16 3110 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. 1260 Comment
  NY1110382  Cryptantha humilis B. J. Ertter 1987-6-16 7182 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 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
  NY1111719  Cryptantha intermedia var. grandiflora N. H. Holmgren 1980-7-3 9474 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
  SEINET8545993  Cryptantha intermedia var. grandiflora J. A. Young 1978-4-13 s.n. Lassen Adin, Meyers Ranch. Comment
  CDA40508  Cryptantha muricata Gary Schoolcraft 2000-6-19 2903 Lassen West of Cold Spring Velley. Comment
  RSA164363  Cryptantha simulans Clare B. Hardham 1961-6-17 7505 Lassen Baxter Creek S of Susanville. Comment
  CHSC77202  Cryptantha torreyana G. Schoolcraft 1997-8-6 2653 Lassen S side of Gold Run Rd. 1889 Comment
  POM72228  Cryptantha torreyana Marcus E. Jones 1897-6-19 6862 Lassen Chat 1616 Comment
  UC1037251  Cryptantha torreyana Leo Whitney 1934-7-5 1787 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  SEINET10497287  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 280 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  RSA0008806  Cryptantha watsonii Barbara Ertter, Gary Schoolcraft 1987-6-16 7187 Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  UCD54418  Cuscuta approximata Jerry Schmierer 1986-9-1 s.n. Lassen Don Blickenstaff Ranch. Comment
  NY674779  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale, CA 1737 Comment
  CHSC66868  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir SW of Westwood. Along the receding marshy edge of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  CAS-BOT-BC208395  Dalea ornata Gary Schoolcraft 1984-6-28 1280 Lassen NW of Shaffer Mtn., on the tablelands 1402 Comment
  CHSC117527  Damasonium californicum Lowell Ahart; John Dittes 2016-7-13 21138 Lassen South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC60782  Damasonium californicum Vernon H. Oswald; Lowell Ahart 1993-6-14 5507 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. 1728 Comment
  CHSC99298  Damasonium californicum Lowell Ahart; John Dittes 2008-6-20 14941 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS32210  Damasonium californicum Jos. Grinnell 1928-6-26 Lassen Poison Lake Lassen Peak Region, Poison Lake 1737 Comment
  POM119128  Damasonium californicum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET3895836 Image available Damasonium californicum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0 1698 Comment
  CDA35647  Damasonium californicum J. R. Keck Jr. 1985-7-18 PDR# 330136 Lassen Ballard Reservoir; Near Old Station. Lassen National Forest. 0 Comment
  JEPS124716 Image available Damasonium californicum B. Corwin 1964-7-1 123 Lassen Under bridges between Bieber and New Bieber on rte. 299. Comment
  POM260301  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UCD138002  Damasonium californicum Calvin McMillan; Malcom A. Nobs 1949-6-15 784 Lassen Nubieber. Comment
  UC1024653  Danthonia californica Leo Whitney 1933-8-3 2201 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CHSC66281  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1996-6-24 7839 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  HSC69064  Danthonia unispicata Gary Schoolcraft 1980-7-28 332 Lassen Meadow E of Tule Mountain. 2043 Comment
  RSA299133  Danthonia unispicata J. T. Howell 1977-6-22 52406 Lassen west of Susanville near the confluence of Willard Creek and Susan River 1433 Comment
  UCD61360  Danthonia unispicata John Thomas Howell 1977-6-22 52406 Lassen West of Susanville near the confluence of Willard Creek and Susan River. 1432 Comment
  SDSU4575  Deinandra lobbii D. F. Howe 1961-8-4 3135 Lassen 11.5 miles east of Mc Arthur on U.S. 299. 1372 Comment
  JEPS28461  Delphinium George W. Gillett 1957-7-21 864 Lassen Juniper Lake-Cameron Meadow trail 300 yd n trail summit; Lassen Volcanic National Park 2118 Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CAS-BOT-BC1424  Delphinium andersonii David Daniels Keck; J. Clausen 1935-6-24 3748 Lassen 2 mi. S of Ravendale 1464 Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  UC1583981  Delphinium andersonii G. Schoolcraft 1990-6-12 2090 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  CDA24233  Delphinium depauperatum T. C. Fuller 1963-6-1 10636 Lassen Road east to Willow Springs Campground, 1.9 miles east of Pittville-Susanville Road, 11.2 road miles south of Pittville. 0 Comment
  CAS-BOT-BC9946  Delphinium nudicaule Mrs. Baldwin 1928-5-10 N. S. Lassen Coyote Flat. Comment
  CHSC36468  Delphinium nudicaule Jeffrey R. Peek 1982-6-3 29 Lassen Ca. .3 mi s jct of forest service roads 5.16 and 5.17, heading toward 5-corners. Comment
  CHSC36497  Delphinium nudicaule Theresa Costa 1982-6-3 29 Lassen Ca. .3 mi s jct forest service rds 5.16 and 5.17, ca. 5 yd w 5.16, heading toward 5-corners. Comment
  UC1126095  Delphinium nuttallianum A. Simontacchi 1940-5-14 708 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1142937  Deschampsia cespitosa A. L. Hormay 1941-6-23 16 Lassen Burgess Spring 1676 Comment
  CAS-BOT-BC194258  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1943-7-10 49769 Lassen Near Westwood - Sierra Nevada 1554 Comment
  CAS-BOT-BC194259  Deschampsia cespitosa subsp. cespitosa Ray Hanson 1954-8-23 s.n. Lassen Near Jackey Lake 2112 Comment
  UC1037093  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1934-7-15 2211 Lassen ca. 15 mi. w. Eagle lake (Crater Lake, Lassen Nat'l Forest); Lassen Nat'l Forest, Crater Lake 2133 Comment
  UC188776  Deschampsia cespitosa subsp. cespitosa Milo S. Baker July 1894 Lassen Eagle Lake Comment
  CHSC66282  Deschampsia danthonioides Vernon H. Oswald; Lowell Ahart 1996-6-24 7840 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. ON the W side of the meadow just S of the cabins. 1633 Comment
  JEPS120871  Deschampsia danthonioides Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18754 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
  POM313171  Deschampsia danthonioides Malcolm A. Nobs, S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  UC1131558  Deschampsia danthonioides Robert W. Gardner 1937-6-20 G- 21 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UCD62516  Deschampsia danthonioides L. Whitney 1935-5-27 3124 Lassen Bieber. Comment
  CAS-BOT-BC192746  Deschampsia danthonioides Clarence R. Quick 1962-6-17 62 25 A Lassen Swains Hole, a manmade pond in sagebrush flat south of Blacks Experimental Station 1554 Comment
  JEPS28059  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Widow Lake 2072 Comment
  UCD63431  Deschampsia elongata L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  UC1609092  Descurainia incisa subsp. filipes Vernon H. Oswald and Lowell Ahart 1993-7-8 5656 Lassen ne edge Poison Lake (1.9 mi n of Hwy 44, Pittville Rd (Lassen 111, 36N01), ridge between railroad and lake) 1709 Comment
  CHSC99147  Descurainia nelsonii Lowell Ahart; John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CAS-BOT-BC43105  Descurainia paradisa G. Schoolcraft 1998-6-9 2733 Lassen Lower slopes of Amedee Mountains. 1249 Comment
  CHSC25138  Descurainia pinnata B. Anthony 1967-6-23 154 Lassen Eagle Lake Biological Station. 1554 Comment
  CAS-BOT-BC43167  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9325 Lassen 2 miles north of Susanville on road to Alturas. Comment
  UC1143009  Descurainia richardsonii August L. Hormay 1934-5-11 Lassen 2.5 mi nw Hall's Flat; Lassen National Forest 1676 Comment
  CHSC13943  Descurainia sophia M. S. Taylor 1974-6-20 258 Lassen Ca. 100 yds ne of Eagle Lake Field Station, ca. 1 ft e of Whitehead Rd, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC99284  Descurainia sophia Lowell Ahart; John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UCD114789  Descurainia sophia R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  CHSC7664  Dichelostemma multiflorum Beverley J. Wise 1969-6-1 141 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  CAS-BOT-BC500984  Dichelostemma multiflorum Ella Dales Cantelow 1940-5-31 3920 Lassen Hy. 299 E. of Mc Arthur Comment
  HSC82268  Dieteria canescens var. canescens Thomas W. Nelson, Jane P. Nelson 1980-7-6 5996 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1523806  Dieteria canescens var. canescens Gary Schoolcraft 1982-7-7 769 Lassen Ft. Sage Mtns. 1950 Comment
  HSC42427  Dieteria canescens var. shastensis Barbara Kelly 1977-8-9 562 Lassen 16 1/4 miles E of Madeline Comment
  UC1037283  Dieteria canescens var. shastensis Leo Whitney 1933-8-21 1716 Lassen ca 14 mi w Eagle Lake (Harvey Mountain near Harvey Valley); Lassen National Forest, Harvey Mountain 1737 Comment
  UC86846  Dieteria canescens var. shastensis T. S. Brandegee Lassen 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-BC153675  Diplacus mephiticus M. S. Baker; Frank Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  CHSC13945  Diplacus mephiticus M. S. Taylor 1974-7-6 311 Lassen On Gallatin Peak overlooking Gallatin Beach, ca. 13 mi nw of Susanville. Comment
  CHSC57240  Diplacus mephiticus David M. Thompson 1998-6-1 923 Lassen 2.7 mi NW of Milford along Hwy 395. 1249 Comment
  CAS-BOT-BC151433  Diplacus nanus D. B. Dunn; B. J. Cox 1971-6-2 17798 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 1402 Comment
  RSA0011496  Dipsacus fullonum R. F. Thorne, Larry E. DeBuhr 1975-8-22 46971 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC31978  Distichlis spicata L. Ahart; J. T. Howell 1974-7-9 536 Lassen Along rd, 5 mi w of Susanville. 1584 Comment
  UC38076  Distichlis spicata J. Burtt Davy June 17-24 1897 3304 Lassen Honey Lake Valley Comment
  UC60743  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  SACT001016  Distichlis spicata var. stricta Verne Grant, Irving Schneider 1947-9-5 Lassen Rhizomatous, northwest shore of Eagle Lake Comment
  CHSC4780  Dodecatheon alpinum R. Carter 1967-6-27 567 Lassen Found in Murrer's upper Meadow 100 yds. S of small dam. 1584 Comment
  UC1553397  Dodecatheon conjugens G. Schoolcraft 1988-4-25 1783 Lassen Ash Valley RNA/ACEC 16 mi e Adin; Ash Valley RNA/ACEC e of Adin 1554 Comment
  UC559941  Dodecatheon conjugens Leo Whitney 1935-6-10 3211 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  CHSC29898  Dodecatheon jeffreyi Robin L. Ondricek 1978-7-7 92 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  CHSC6234  Dodecatheon jeffreyi M. West 1946-6-20 Lassen Meadow above Grasshopper Valley. 1828 Comment
  CHSC23439  Downingia bacigalupii K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5807 Lassen Drying vernal pool area, e side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  CHSC95386  Downingia bacigalupii H. Chappel; J. Goldhammer, K. Moran, K. Strassman 2002-7-9 ALT- 018 Lassen Ecoregion 4. Muck Valley (at top of mountain pass). 1386 Comment
  JEPS96026  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1996-6-24 7845 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  RSA768782  Downingia bacigalupii L. Ahart, John Dittes 2010-7-31 17013 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
  UC1143165  Downingia bacigalupii A. Simontacchi 1940-6-16 874 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1523717  Downingia bacigalupii Gregg Riegel 1981-6-17 1150 Lassen 1280 Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 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
  CHSC23491  Downingia bicornuta K. R. Stern 1974-6-26 5855 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  RSA0035911  Downingia bicornuta var. bicornuta Lowell A. Ahart, John Dittes 2008-6-20 14945 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
  UC157670  Downingia bicornuta var. bicornuta Milo S. Baker 1894-7-12 Lassen Pine Creek 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
  JEPS19680  Downingia insignis Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 6000 Lassen 3.1 mi s Madeline (ditches along U.S. Highway 395); Madeline Plains 1615 Comment
  CHSC65304  Downingia laeta Vernon H. Oswald; Lowell Ahart 1995-8-14 7199 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  POM175682  Downingia laeta R. S. Williams 1887-7-30 s.n. Lassen Near Augusta (?) Comment
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Jul 9 2013
  UCD149942  Downingia laeta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  UCD55040  Downingia laeta Malcolm A. Nobs; S. Galen Smith 1949-7-20 1047 Lassen Bieber; along Highway 299. Comment
  SBBG33614  Downingia pulchella H. and M. Dearing 1938-6-30 2224 Lassen ca. 50 mi W of Susanville 1219 Comment
  CAS-BOT-BC41952  Draba albertina John Thomas Howell 1934-6-30 12132 Lassen Warner Mountains. Near Lost Lake. 2438 Comment
  CHSC65308  Drosera anglica Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7216 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Lik ... Field redacted by CHSC, contact the data manager for more information 1859 Comment
  JEPS106520  Drymocallis glandulosa var. glandulosa L. P. Janeway 2004-6-26 8154 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
  UC1143045  Drymocallis lactea L. R. Short and J. Warren 1936-6-10 S- 425 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1853 Comment
  CHSC76099  Elaeagnus angustifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8223 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3-1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC116196  Elatine Lowell Ahart; John Dittes 2015-7-13 20297 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116193  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20299 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121282  Elatine californica Lowell Ahart, John Dittes 2013-7-22 18881 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
  RSA252429  Elatine californica R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39136 Lassen Said Valley Reservoir. Comment
  UCD58788  Elatine chilensis Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  CHSC60449  Eleocharis acicularis var. acicularis Mary Ann Showers 1992-6-13 2548 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CDA7765  Eleocharis acicularis var. acicularis G. Schoolcraft 1995-5-22 s.n. Lassen Morgan Spring N of Skedaddle Mtns. Comment
  CHSC117180  Eleocharis bella Lowell Ahart; John Dittes 2016-6-7 21015 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
  JEPS88513  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1996-6-24 7851 Lassen Papoose Meadows Modoc Plateau (ca 0.5 mi e of Eagle Lake Rd (A1) and 2.5 mi s of Eagle Lake, at pile of fenceposts on w side of meadow just s of cabins) 1633 Comment
  CAS-BOT-BC112847  Eleocharis macrostachya Hans Leschke 1959-8-2 1588 Lassen Manzanita Lake 1781 Comment
  POM11415  Eleocharis montevidensis var. montevidensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CHSC117286  Eleocharis palustris Lowell Ahart; John Dittes 2016-7-15 21215 Lassen About 300b yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) mortheast of Bieber, Big Valley. 1261 Comment
  CHSC96438  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  SEINET190966  Elymus A. A. Beetle 1941-6-28 2803 Lassen 10 mi W of Chester Rte 36 Comment
  UC506940  Elymus X saundersii George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassn <National> Forest 1737 Comment
  CHSC60798  Elymus cinereus Vernon H. Oswald; Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  CAS-BOT-BC227484  Elymus elymoides John Thomas Howell 1976-7-20 52000 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC227493  Elymus elymoides John Thomas Howell 1934-6-10 11866 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  JEPS128418  Elymus elymoides Jennifer Mueller 2017-7-18 CA 320 -193 Lassen Near Long Springs on Cold Springs Mountain. 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
  UC593454  Elymus elymoides subsp. elymoides E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1742 Lassen e-facing slope of gully on mt. above Red Rock 1420 Comment
  CHSC111248  Elymus spicatus B. Castro; L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. 1417 Comment
  UCR17291  Elymus spicatus Frank C. Vasek 1975-7-11 750711- 02 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  UC1024684  Elymus trachycaulus Leo Whitney 1933-8-3 2161 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCR119182  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Modoc Plateau, 4.5 miles west of Susanville along state highway 36. 1433 Comment
  CHSC105211  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2010-7-19 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 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
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Oct 5 2019
  CHSC29894  Elymus trachycaulus subsp. trachycaulus Robin L. Ondricek 1978-8-2 113 Lassen North edge of dam at Murrers Upper Meadow. 1548 Comment
  HSC8755  Elymus trachycaulus subsp. trachycaulus M. T. Milligan 1964-8-6 205 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA299617  Elymus trachycaulus subsp. trachycaulus J. T. Howell 1973-7-10 49776 Lassen Fredonyer Pass 1738 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
  CDA2041  Elytrigia elongata T. C. Fuller 1963-7-15 10887 Lassen South of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  CDA2044  Elytrigia elongata T. C. Fuller 1963-7-16 10920 Lassen Head of Secret Valley, W side of Hwy 395 to Litchfield, 14.1 miles S of Ravendale. 0 Comment
  CAS-BOT-BC81878  Ephedra viridis M. Bourell 1997-5-31 5882 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  CHSC116918  Ephedra viridis J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CHSC23330  Ephedra viridis Mark Stopher 1976-1-11 29 Lassen Ca. 52 miles south of Susanville on Hwy. 395 then two miles east on Red Rock Road. 1328 Comment
  CHSC89  Ephedra viridis 1928-5-28 Lassen Antelope grade north of Susanville. 1615 Comment
  SEINET3868651  Ephedra viridis D. H. Norris, T. Nelson 1971-6-22 19306 Lassen Along Hwy. 395 about 4 miles east of Standish.; 0 Comment
  SEINET10532271  Ephedra viridis Mary Susan Taylor 1982-5-29 Taylor 4563 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  CHSC89728  Epilobium brachycarpum L. P. Janeway 2004-6-26 8146 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS121278  Epilobium brachycarpum Lowell Ahart 2013-7-22 18844 Lassen W margin of duck field, about 20 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA123007  Epilobium brachycarpum L. R. Short, J. Warren 1936-6-23 S- 454 Lassen Burgess Spring Exp. Range, Lassen forest 1744 Comment
  UC773933  Epilobium brachycarpum L. R. Short and J. Warren 1936-6-23 S- 454 Lassen Burgess Spring Experiment Range Lassen National Forest 1743 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
  UC303060  Epilobium canum subsp. latifolium Pearl Safford 111 Lassen Susanville [uncertain locality] Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC6190  Epilobium ciliatum subsp. ciliatum P. Balch 1955-7-24 Lassen Gallatin's Beach, Eagle Lake. 1561 Comment
  JEPS119642  Epilobium ciliatum subsp. ciliatum Lowell Ahart, John Dittes 2012-7-9 18301 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS114690  Epilobium ciliatum subsp. glandulosum Lowell Ahart, John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC58845  Epilobium densiflorum Vernon H. Oswald; Lowell Ahart 1992-7-16 5110 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. On the bed of the creek on the bed of the reservoir. 1691 Comment
  JEPS121249  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 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
  CDA20353  Epilobium densiflorum H. Leach August 1949 s.n. Lassen Modoc Plateau; Madeline Plain. 0 Comment
  UC303068  Epilobium glaberrimum subsp. glaberrimum Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  JEPS88515  Epilobium hallianum Vernon H. Oswald and Lowell Ahart 1996-6-24 7849 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1924264  Epilobium hallianum Debra Valov 2005-8-20 2005226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  RSA458712  Epilobium minutum Christopher Davidson 1975-6-7 2758 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SJSU10675  Epilobium oregonense J. W. Tilden 1960-6-27 1517 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  UC1609447  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  SEINET3271522 Image available Epilobium oregonense Marcus E. Jones 1897-6-30 Lassen 4 mi. below Eagle Lake 1524 Comment
  SEINET194973  Epilobium pallidum A. A. Heller 1938-7-28 15295 Lassen Edge of swamp about mile east of Westwood 1524 Comment
  UC1122350  Epilobium torreyi A. Simontacchi 1940-6-30 905 Lassen 2.2 mi ene Ebey Lake 1699 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-BC57304  Equisetum laevigatum John Thomas Howell 1973-7-10 49771 Lassen near Westwood 1554 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
  RSA719899  Equisetum laevigatum Michael A. Vincent, K. Levings 2006-7-29 12905 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CAS-BOT-BC284042  Eragrostis minor John Thomas Howell 1976-7-19 51942 Lassen Susanville, Sierra Nevada 1287 Comment
  CAS-BOT-BC174119  Eremogone aculeata B. J. Hammerly 1941-6-20 50 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  SBBG124753  Eremogone congesta var. simulans C. B. Hardham 1961-6-17 7531 Lassen Hwy 395, between Alturas and Susanville 1524 Comment
  RSA0057705  Eremogone congesta var. subcongesta L. P. Janeway 2001-6-20 7199 Lassen Modoc Plateau. Along 22 Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  CAS-BOT-BC481938  Eremogone kingii var. glabrescens B. J. Hammerly 1941-6-21 51 Lassen 8 mi SE of Likely on Blue Lake Road Comment
  UCD150407  Eremothera boothii subsp. alyssoides William Anderson 1963-6-2 s.n. Lassen Wendel. Comment
  UC1483823  Eremothera minor G. Schoolcraft 1980-6-11 267 Lassen w Wendel 1219 Comment
  CHSC23501  Eriastrum signatum Wayne O. Baum 1971-7-16 71 -78 Lassen S. slope of Gallatin Peak. 2042 Comment
  RSA0124147  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau just above the flats along the S side of Rush Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  UC1178959  Eriastrum signatum Herbert L. Mason 1957-7-5 14714 Lassen s Madeline; Madeline Plains Comment
  CAS-BOT-BC515171  Eriastrum signatum Lewis S. Rose 1934-7-25 34410 Lassen Reno Jct. 1371 Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  RSA0124149  Eriastrum signatum Christopher Davidson 1975-6-7 2763 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS124583 Image available Eriastrum sparsiflorum J. Yamanaka 1965-7-12 123 Lassen Highway 395, 2.6 miles No. of Milford Habitat. Comment
  UCD149881  Eriastrum wilcoxii William Anderson 1963-6-26 s.n. Lassen Honey Lake. Comment
  CAS-BOT-BC286606  Ericameria bloomeri E. K. Balls; P. C. Everett 1952-10-9 18134 Lassen About Plumas-Lassen county line, Hwy 89, east of Lake Almanor 1219 Comment
  RSA747338  Ericameria bloomeri K. M. Meyer, A. Townesmith 2007-7-23 155 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
  UC1776699  Ericameria bloomeri G. Schoolcraft 1992-8-19 2249 Lassen About 1 mile east of Devil's Corral, HWY 36 1493 Comment
  CAS-BOT-BC287478  Ericameria greenei Ralph K. Gierisch 1968-7-11 3348 Lassen Harvey Valley, Lassen Forest 1676 Comment
  CHSC12490  Ericameria nauseosa Carol Weld 1969-6-19 59 Lassen Ca 150 yd N.W. of Eagle Lake Field Station. 1554 Comment
  CHSC23484  Ericameria nauseosa Wayne O. Baum 1971-7-29 71 -57 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC298170  Ericameria nauseosa var. oreophila Gary Schoolcraft 1984-9-26 1380 Lassen Painter Flat 1706 Comment
  CAS-BOT-BC298172  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel on the road to Janesville 1219 Comment
  CAS-BOT-BC298180  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel, on road to Janesville 1219 Comment
  CAS-BOT-BC298182  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  UC1553387  Ericameria nauseosa var. oreophila G. Schoolcraft 1988-8-24 1853 Lassen 16 mi e of Adin (Ash Valley RNA/ACEC); Ash Valley 1554 Comment
  UC761818  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-27 4628 Lassen Susanville Comment
  CHSC78479  Ericameria suffruticosa Vernon H. Oswald 2000-7-31 9946 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  CDA18267  Erigeron G. D. Barbe 1974-8-2 1931 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC293524  Erigeron aphanactis var. aphanactis Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Ball's Canyon, south of Secret Valley Comment
  JEPS94521  Erigeron bloomeri Vernon H. Oswald and Lowell Ahart 1997-5-27 8486 Lassen 38.2 mi n of Susanville (e side of Highway 139 at a small farm pond,, 7.4 mi n of Eagle Lake Road); Highway 139 1627 Comment
  SEINET240401  Erigeron bloomeri S. L. Welsh, ND Atwood 2001-6-14 28153 Lassen E of Hwy 395, rd to Rams Horn Spring campground 1539 Comment
  SEINET10617399  Erigeron bloomeri David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17790 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  SEINET201632  Erigeron bloomeri A. Cronquist, AH Holmgren 1959-6-17 8460 Lassen 50 mi SE of Susanville Comment
  CHSC60815  Erigeron bloomeri var. bloomeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC67463  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of rodge N of drainage. 1584 Comment
  CHSC68843  Erigeron bloomeri var. bloomeri Vernon Oswald; Lowell Ahart 1997-6-24 8631 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
  HSC81651  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  JEPS114758  Erigeron bloomeri var. bloomeri Lowell Ahart, John Dittes 2008-6-19 14894 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC773917  Erigeron bloomeri var. bloomeri L. R. Short and J. Warren 1936-6-23 S- 451 Lassen Burgess Springs Experiment Range Lassen National Forest, Burgess Springs Experiment Range 1741 Comment
  JEPS117585  Erigeron divergens Lowell Ahart, John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  SEINET5708465 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  UC1536893  Erigeron divergens G. H. True Jr. 1936-6-21 516 Lassen roadside se Litchfield; Honey Lake Valley 1219 Comment
  UC1583973  Erigeron divergens G. Schoolcraft 1990-7-11 2107 Lassen on e slopes Tule Mtn. 1767 Comment
  UC1924228  Erigeron divergens Debra Valov 2004-6-8 2004246 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC296846  Erigeron divergens John Thomas Howell 1973-7-10 49773 Lassen Near Westwood, Sierra Nevada 1554 Comment
  SEINET10475564  Erigeron eatonii var. nevadincola Mary Merello 1993-6-28 Merello 753 Lassen Lassen National Forest. Along Forest Service Road 33N02 to Harvey Mountain Lookout and Harvey Valley. Open pine scrub and sagebrush woodland. 1740 Comment
  CAS-BOT-BC300371  Erigeron eatonii var. plantagineus B. Bartholomew; B. Anderson 1988-6-25 4374 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC300425  Erigeron elegantulus Roxana S. Ferris; Rena Duthie 1919-6-12 20 Lassen Madeline Comment
  JEPS95131  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
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 Comment
  RSA700234  Erigeron filifolius var. filifolius L. P. Janeway 2001-6-20 7201 Lassen High Cascade Range, 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  SBBG8113  Erigeron inornatus H. and M. Dearing 1938-7-1 2236 Lassen Susanville Comment
  CHSC59077  Erigeron inornatus var. inornatus Vernon H. Oswald; Lowell Ahart 1992-8-25 5180 Lassen Lassen Volcanic National Park. Juniper Lake-Snag Lake Trail, ca. midway between Cameron Meadow and Snag Lake. 1935 Comment
  CAS-BOT-BC295470  Erigeron lassenianus var. lassenianus Clarence R. Quick 1961-6-21 61 -21 Lassen Adjacent to Road 21, Blacks Mt. Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC295472  Erigeron lassenianus var. lassenianus Parkison 1916-6-21 40 Lassen Lassen National Forest. Near Patterson Cabin 1706 Comment
  CHSC105241  Erigeron pumilus subsp. intermedius Lowell Ahart; John Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC68845  Erigeron pumilus var. intermedius Vernon Oswald; Lowell Ahart 1997-6-24 8648 Lassen South of Susanville at the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC93688  Erigeron pumilus var. intermedius Lowell Ahart; John Dittes 2005-6-1 11853 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC31450  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow Dixey Valley, Adobe meadow Comment
  CDA18265  Eriogonum baileyi G. D. Barbe 1974-8-2 1928 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET5328378  Eriogonum baileyi var. baileyi M. J. Williams 1974-7-26 74 -L-25 Lassen 2 mi. west of Hallelujah Junction, south of Hwy. 70. 1494 Comment
  CHSC25303  Eriogonum caespitosum Pauleen Broyles 1977-5-30 150 Lassen Lava flow ca 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Creek Road, ca 8 km ne of Herlong. 1660 Comment
  CAS-BOT-BC241837  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N. LItchfield, 26.6 mi S Ravendale 1310 Comment
  NY242504  Eriogonum collinum A. J. Cronquist 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  CHSC68899  Eriogonum douglasii var. meridionale Vernon Oswald; Lowell Ahart 1997-6-24 8639 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  UCSC005349  Eriogonum elatum Randall Morgan 1998-7-20 3319 Lassen Hwy 144 west of Susanville Comment
  SEINET210992  Eriogonum gracilipes Noel H. Holmgren, Barton L. Bethe 1970-6-25 4378 Lassen Northe end if Petersen Mountain, near U.S. 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). T 23N, R 18E. Sec 6. Comment
  SEINET5330338  Eriogonum inflatum var. inflatum F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  CAS-BOT-BC263047  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  NY430489  Eriogonum marifolium G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mountain 2316.5 Comment
  CAS-BOT-BC267344  Eriogonum marifolium var. marifolium G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2289 Lassen East slope of Thompson Peak, south of Janesville 2346 Comment
  UC7867810  Eriogonum microthecum var. ambiguum R. F. Hoover 1940-9-28 4636 Lassen canyon n Leavitt Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  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
  CAS-BOT-BC268689  Eriogonum microthecum var. laxiflorum Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  NY282159  Eriogonum microthecum var. laxiflorum R. F. Hoover 1940-9-28 4636 Lassen Canyon north of Leavitt. Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  CAS-BOT-BC266368  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49514 Lassen West of Janesville, Elysian Valley, Sierra Nevada 1325 Comment
  POM105409  Eriogonum nudum var. deductum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC68900  Eriogonum nudum var. nudum Vernon Oswald; Lowell Ahart 1997-6-24 8595 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). Along the edge of the road. 1685 Comment
  JEPS126471  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-9-2 CA 350 -065 Lassen Turn right onto Buckhorn Byway from 395. Continue past Pilgrim Lake. Turn right at the first available turn, past exclusion fence (around 20 miles). Will eventually arrived at riparian area. Comment
  UC1032183  Eriogonum nudum var. pubiflorum H. P. Hagge 1929-9-11 17 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC1032332  Eriogonum nudum var. pubiflorum A. Simontacchi 1940-7-2 931 Lassen 6. 2 mi ene Ebey Lake; Lssen National Forest, Halls Flar Quadrangle Comment
  UC1542950  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1758 Lassen Hayden Hill, old town site 1737 Comment
  NY762344  Eriogonum nudum var. pubiflorum B. Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km north of Route 299 1065 Comment
  UC77673  Eriogonum nudum var. scapigerum T. S. Brandegee 1892-6-27 Lassen Milford Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  UCR259107  Eriogonum nummulare John F. Emmel 1993-7-29 1284 Lassen Southeast Honey Lake Valley, 4.1 air miles west and 1.3 air miles south of Calneva railroad stop, c. 2 air miles north of peak of Turtle Mountain 1256 Comment
  CHSC12966  Eriogonum ovalifolium var. nivale K. R. Stern 1974-6-26 5864 Lassen Ca. 3 mi nw of intersection of Pittville Rd. with Hwy. 44, ca. 200 yds. ne of Poison Lake. 1700 Comment
  UC1609436  Eriogonum ovalifolium var. nivale Vernon H. Oswald and Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd.(33N02) 1.7 mi n Hwy 44 (e of Poison Lake, e side of Grays Valley); Grays Valley 1719 Comment
  UC54767  Eriogonum ovalifolium var. ovalifolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee Honey Lake Valley, Amadee Comment
  UCD55294  Eriogonum ovalifolium var. ovalifolium Ellen Dean; Gary Schoolcraft 2006-5-16 3115 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. 1274 Comment
  RSA59736  Eriogonum prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W of Madeline on road from Adin 1677 Comment
  UC1483820  Eriogonum prociduum G. Schoolcraft 1980-7-14 308 Lassen w Madeline (Ash Valley); Ash Valley 1548 Comment
  UC6570  Eriogonum prociduum Mrs. R. M. Austin June, 1894 Lassen Willow Creek Valley Comment
  CAS-BOT-BC258146  Eriogonum prociduum var. prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W. of Madeline on rd. from Adin 1676 Comment
  CAS-BOT-BC272626  Eriogonum spergulinum var. reddingianum John Thomas Howell 1934-7-6 12446 Lassen Harvey Valley 2438 Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  CAS-BOT-BC272623  Eriogonum spergulinum var. reddingianum M. S. Baker; Frank Nutting 1894-1-1 s.n. Lassen Unspecified Comment
  CAS-BOT-BC271959  Eriogonum sphaerocephalum var. halimioides Pauleen Broyles 1977-6-1 165 Lassen Spencer Basin, 8 km n of Herlong 1770 Comment
  CHSC64846  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1995-6-26 6927 Lassen Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  CHSC68755  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald; Lowell Ahart 1997-5-27 8491 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  OBI77559  Eriogonum sphaerocephalum var. halimioides Anthony Baniaga 2011-7-1 409 Lassen CDFG. Bass Hill Wildlife Area W of hwy 395. Janesville quad. T29N R13E sec 19 SW of SW 1279 Comment
  JEPS56418  Eriogonum sphaerocephalum var. sphaerocephalum Hilda W. Grinnell 1934-5-31 Lassen near Susanville (mouth of Piute Creek Canyon); Piute Creek Canyon Comment
  NY283383  Eriogonum strictum G. Schoolcraft 1985-6-12 1422 Lassen Near intersection of Horse Lake Road & Highway 139 1487.4 Comment
  CHSC71247  Eriogonum strictum var. anserinum Vernon H. Oswald; Lowell Ahart 1998-6-4 9147 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  CHSC99136  Eriogonum strictum var. anserinum Lowell Ahart; John Dittes 2008-6-19 14893 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
  NY762354  Eriogonum strictum var. anserinum H. D. D. Ripley 1944-5-30 5965 Lassen Secret Valley 1554.5 Comment
  UC1032334  Eriogonum strictum var. anserinum A. Simontacchi 1940-6-30 907 Lassen 2.2 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS126484  Eriogonum umbellatum Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -051 Lassen Take Horse Lake Road for about 15 miles. Comment
  SBBG64170  Eriogonum umbellatum D. Crofton-Atkins 1931-6-7 Lassen Susanville 1310 Comment
  CAS-BOT-BC267816  Eriogonum umbellatum var. covillei Annie M. Alexander; Louise Kellogg 1942-8-21 3356 Lassen Below Golden Trout Resort, Cottonwood Creek, Cottonwood Lakes, southwest of Lone Pine, Sierra Nevada Comment
  CHSC86975  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
  CAS-BOT-BC265099  Eriogonum umbellatum var. nevadense Mrs. E. C. Van Dyke 1931-6-13 s.n. Lassen Kelly Camp, Mt. Lassen Natl. Park Comment
  NY399396  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Between Secret Valley and Ravendale. Upper Sonoran Life Zone 1524.0 Comment
  UC1143015  Eriogonum umbellatum var. nevadense August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  CAS-BOT-BC265098  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-12 1 -83 Lassen On Sears Road near Janesville, Sierra Nevada Comment
  JEPS117588  Eriogonum umbellatum var. polyanthum Lowell Ahart, John Dittes 2010-7-31 16988 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  POM105077  Eriogonum umbellatum var. polyanthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC6403  Eriogonum ursinum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC262354  Eriogonum vimineum G. Schoolcraft 1993-6-29 2306 Lassen Ash Valley RNA/ACEC at south end of T in Rd. 1539 Comment
  CHSC84440  Eriogonum vimineum Lowell Ahart 2003-8-17 10516 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
  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
  RSA768781  Eriogonum vimineum L. Ahart, John Dittes 2010-7-31 17018 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  CDA22697  Eriogonum vimineum T. C. Fuller 1963-7-15 10894 Lassen Road to Pittville, 4.3 miles northwest of Little Valley. 0 Comment
  CHSC66273  Eriophorum gracile Vernon H. Oswald; Lowell Ahart 1996-6-24 7888 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC96443  Eriophorum gracile Gordon Leppig; T. LaBanca, L. Arguello 1997-6-28 508 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC300340  Eriophyllum A. M. Vollmer; L. Beane 1953-7-1 42 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  CDA5861  Eriophyllum lanatum var. achilleoides Gary Schoolcraft 1991-7-3 2199 Lassen East slope of widow mountain. Comment
  POM253262  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen Ridge east of Fredonyer Pass on Highway 36 1646 Comment
  UC773893  Eriophyllum lanatum var. achilleoides L. R. Short and J. Warren 1936-6-29 S 459 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1822 Comment
  CAS-BOT-BC301531  Eriophyllum lanatum var. integrifolium Louella Bass 1983-6-10 8 -83 Lassen Lassen College Campus, Susanville Comment
  SEINET10673285  Eriophyllum lanatum var. integrifolium Paul Gallian, David B. Dunn 1971-6-2 Gallian 472 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UC1487305  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UCD18971  Eryngium alismifolium Raymond D. Ratliff 1965-8-4 39 Lassen Lassen National Forest, Harvey Valley Allotment (HV 78-73). 1706 Comment
  JEPS66448  Eryngium alismifolium L. R. Heckard and P. Rubtzoff 1971-8-4 2709 Lassen ca. 10 mi. n. Terms (along U.S. Hwy. 395) Comment
  JEPS66442  Eryngium articulatum L. R. Heckard and P. Rubtzoff 1971-8-3 2703 Lassen 1.3 mi. w. of Pit R. bridge at Bieber 1219 Comment
  UC21010  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3374 Lassen Honey Lake Valley Comment
  UC773887  Erysimum capitatum var. capitatum L. R. Short and B. H. Short 1936-6-15 S- 437 Lassen Longs Well Lassen Forest 1712 Comment
  JEPS118156  Erysimum repandum Dean W. Taylor 2009-5-21 20607 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air mi E of Round Valley Reservoir 1706 Comment
  JEPS79211  Erysimum repandum L. R. Heckard with R. C. Bacigalupi 1980-6-11 5247 Lassen 11.3 mi. n. Litchfield (along U.S. 395 s. of Deep Creek crossing, between R.R. & hwy.) 1463 Comment
  UCD149850  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  CHSC60405  Erythranthe breweri Mary Ann Showers 1992-6-12 2527 Lassen Lassen Volcanic National Park. Butte Lake. 1859 Comment
  CHSC30599  Erythranthe guttata Marc Held 1972-6-23 9 Lassen Upper Murrer's Meadow along spring red stream. 4.5 miles south-east of E.L.B.S. (approx.). Comment
  SEINET13723865 Image available Erythranthe moniliformis Farris Farris 1936-1 Lassen Diamond Mountain 1829 Comment
  CHSC37357  Erythranthe primuloides NE Heiken 1978-7-5 73 Lassen S of Eagle L., E shore of Mahogany L. 2060 Comment
  CHSC43496  Erythranthe primuloides Lowell Ahart 1974-7-9 521 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  OBI76994  Erythranthe pulsiferae Anthony Baniaga 2011-6-30 403 Lassen Lassen Natl Forest. Fredonyer Pass quad T29N R10E sec 23 NE of SE 1526 Comment
  CHSC60775  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1993-6-14 5523 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
  CHSC71102  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1998-5-22 9123 Lassen Road to Summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CAS-BOT-BC502813  Erythronium purpurascens Alice Eastwood 1912-8-22 s.n. Lassen Trail from Morgan Spring to Lassen Butte Comment
  CAS-BOT-BC403149  Eschscholzia californica Elmer I. Applegate 1923-9-30 4033 Lassen Constantia Comment
  CHSC117283  Eschscholzia californica subsp. californica Lowell Ahart; John Dittes 2016-7-15 21228 Lassen About 100 yards west of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1278 Comment
  UCR67467  Eucephalus breweri George K. Helmkamp 1990-10-4 M- 6 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 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
  SEINET9594781  Euphorbia crenulata D. W. Taylor 2012-7-18 21273 Lassen Along Hwy 44, pumice flat nestled in the cones ca 2 miles S of the S end of Poison Lke. 1783 Comment
  RSA712794  Festuca L. P. Janeway 2005-7-3 8460 Lassen High Cascade Range. At junction of road 22 and road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. NAD83. 1523 Comment
  GMDRC6957  Festuca idahoensis J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31434 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  HSC29817  Festuca idahoensis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19186 Lassen Harvey Valley near Cone Springs Comment
  JEPS123453  Festuca idahoensis Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -142 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  JEPS127718  Festuca idahoensis Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -173 Lassen South on 395. West on 171. Continue above 6000ft. Comment
  JEPS17718  Festuca idahoensis Rimo Bacigalupi with G. T. Robbins 1955-7-19 5371 Lassen 10.3 mi se Adin (along Ash Valley road between Adin and Madeline) 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
  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
  UCR17288  Festuca idahoensis Frank C. Vasek 1975-7-11 750711- 04 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  OBI75881  Festuca myuros Anthony Baniaga 2011-6-30 406 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1460 Comment
  UC53432  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
Read comments
Jun 24 2009
  UCD66336  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  UCD66364  Festuca rubra A. H. Shunk 1923-1 13 Lassen Hayden Hill. Comment
  SJSU6457  Festuca viridula H. L. Buckalew 1961-7-10 Lassen by Blue Lake, Warner Mts 1828 Comment
  JEPS19565  Floerkea proserpinacoides Milo S. Baker and F. P. Nutting 1894-6-15 Lassen Meadow in the Big Valley Mountains situated nw of Big Valley in which Bieber and Nubieber are located, northwestern Lassen County Big Valley; Big Valley Mountains Comment
  CHSC66397  Frangula rubra Vernon H. Oswald; Lowell Ahart 1996-6-17 7779 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Shrub growing in openings on a brushy slope on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  CAS-BOT-BC55724  Frangula rubra subsp. rubra Boldenweck 7718 Lassen Lassen N.F. Comment
  CHSC4503  Fremontodendron californicum subsp. californicum C. Glascock 1965-5-15 419 Lassen 12.4 mi. w of Mineral R. S. on Hwy. 36 at n roadside. Comment
  OBI75875  Fritillaria atropurpurea Anthony Baniaga 2011-1 Lassen Comment
  JEPS4950  Fritillaria pudica Louise Scroggy 1918-3-24 Lassen 1/4 mi above Pit River (on Dixie Valley Road, 2 mi above Rocky Comfort School House in nw corner of Lassen Co., 15 mi n of boundary line); Dixie Valley Road Comment
  RSA180586  Gaillardia aristata T. C. Fuller 1965-8-25 14036 Lassen East side of Hwy. 395 to Doyle, 2.4 miles north of Hallelujah Junction Comment
  SEINET11615980  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  CHSC93556  Galium boreale subsp. septentrionale Lowell Ahart; John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  CHSC113000  Galium trifidum subsp. columbianum Lowell Ahart; John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29944  Gayophytum Robin L. Ondricek 1978-6-14 54 Lassen 1.8 mi e of Coleman Lake Rd. on Lassen Co. Al. 1950 Comment
  CHSC36176  Gayophytum diffusum Jerry Snodgrass 1978-6-28 1 Lassen Lower Dry Lakes e of Eagle Lake. 1645 Comment
  JEPS117572  Gayophytum diffusum subsp. diffusum Lowell Ahart, John Dittes 2010-7-31 17020 A Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  POM38697  Gayophytum diffusum subsp. parviflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  POM38702  Gayophytum helleri var. glabrum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  POM196436  Gayophytum heterozygum A. H. Kramer s.n. Lassen Prospect Peak Comment
  POM38695  Gayophytum heterozygum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1122617  Gayophytum heterozygum A. Simontacchi 1940-6-24 892 Lassen 0.2 mi nnw Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS107306  Gayophytum racemosum Lowell Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction 1438 Comment
  NY999656  Gayophytum ramosissimum J. T. Howell 1974-7-8 50463 Lassen Susanville 1295 Comment
  POM204159  Gayophytum ramosissimum J. T. Howell 1934-6-10 11843 Lassen Near Plumas Junction Comment
  JEPS88543  Gentiana calycosa Vernon H. Oswald and Lowell Ahart 1996-8-1 8119 Lassen Forest Rd, 28N56 (D-Line) ca. 2 mi N of Cyer Mtn. Lookout SSW of Westwood 1737 Comment
  UC1037290  Gentianella amarella subsp. acuta Leo Whitney 1934-7-24 1690 Lassen ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest 1737 Comment
  UCD103467  Geranium oreganum L. R. Short; Wm. Gansberg 1936-6-12 S- 433 Lassen Lassen Forest, MDM, Burgess Spr. Exp. Range. 1807 Comment
  CHSC5011  Geranium viscosissimum var. nervosum L. G. Bennett 1967-7-4 105 Lassen Deans Meadow, near Eagle Lake. 1706 Comment
  UC1136907  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  UC477497  Geum triflorum A. G. Brenneis 1928-7-3 14 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  CAS-BOT-BC143567  Geum triflorum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50668 Lassen NE. of Diamond Mt. 2255 Comment
  CHSC48846  Geum triflorum var. ciliatum Vernon Oswald 1986-5-28 2066 Lassen Hwy 139 between Eagle Lake and Adin, 49.0 mi n of Susanville. 1630 Comment
  SD107308  Gilia Christopher Davidson 1975-6-7 2756 Lassen 1.0 mile east of Beckwourth Pass on Highway 70. 1524 Comment
  SEINET14625061  Gilia brecciarum subsp. brecciarum M. J. Williams, A. Tiehm 1978-5-14 78- 48 -1 Lassen Hwy 395, 2.8 miles S of Red Rock road turn-off. 1372 Comment
  RSA0068910  Gilia minima Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CHSC48652  Gilia modocensis Vernon Oswald 1986-5-28 2078 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  JEPS107831  Gilia modocensis Lowell Ahart, John Dittes 2005-6-2 11989 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  CAS-BOT-BC523868  Gilia modocensis Alice Eastwood; John Thomas Howell 1940-6-16 8355 Lassen Constantia Comment
  RSA95714  Gilia modocensis Verne Grant, Alva Grant 1955-6-8 9666 A Lassen c. 2 miles north of Doyle. 1311 Comment
Read comments
May 2 2012
  CHSC25915  Gilia sinuata K. R. Stern 1967-7-1 2437 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  UC52852  Gilia sinuata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee , Amadee (Amedee?) (Honey Lake Valley) Comment
  OBI77053  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  UC1483863  Glyptopleura marginata G. Schoolcraft 1980-5-9 232 A Lassen near state line s of High Rock Ranch 1219 Comment
  JEPS114877  Gnaphalium palustre Lowell Ahart, John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  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
  CHSC36464  Grayia spinosa Jeffrey R. Peek 1982-6-1 25 Lassen Ca. 10 yds e of Ravendale Rd, e of Horse Lake. Comment
  SEINET4175755  Grayia spinosa F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  JEPS127268  Grindelia hirsutula Lowell Ahart, John Dittes 2016-7-13 21107 Lassen 30 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
  SEINET10475073  Grindelia squarrosa Mary Susan Taylor 1982-8-19 Taylor 5024 Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  SEINET8770843 Image available Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Turnoff to Janesville along Hwy 395 Comment
  CDA34391  Gypsophila paniculata Anonymous 1987-6-17 Lassen Off US 395 near Janesville. 0 Comment
  CHSC114922  Gypsophila paniculata D. B. Joley 1976-6-22 1 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
  UCD165252  Halogeton glomeratus John M. Tucker 1950-7-26 1978 Lassen Southeastern part of county; Herlong, CA, Herlong Ordnance Depot; (Exact location unknown, coordinates estimated by label maker). Comment
  CHSC12485  Hastingsia alba Carol Weld 1969-6-26 44 Lassen 7.8 miles S. W. of Eagle Lake Field Station. 1584 Comment
  CAS-BOT-BC314764  Helianthella californica var. nevadensis A. M. Vollmer; L. Beane 1953-7-1 37 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC4996  Helianthus annuus R. Clicquennoi 1967-7-1 62 Lassen 0.2 mi w of Murrer's Ranch turnoff, 14.9 mi n of Susanville, highway 139. 1463 Comment
  UCR57493  Helianthus annuus R. D. Goeden, Don W. Ricker 1989-8-22 890822- 9 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  UC32278  Helianthus annuus Baker and Nutting 1894-7-2 Lassen Comment
  CHSC64756  Helianthus cusickii Vernon H. Oswald 1995-5-31 6798 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  POM253276  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  SD64346  Helianthus nuttallii Darley F. Howe 1966-8-26 4303 Lassen Modoc-Lassen County Line, east of Warner Mountains. 1340 Comment
  RSA783699  Heliotropium curassavicum R. R. Halse 2010-8-25 8086 Lassen Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake. 1559 Comment
  SJSU8133  Hemizonella minima J. W. Tilden 1960-6-27 1500 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  UC1776717  Hemizonella minima G. Schoolcraft 1987-5-19 1704 Lassen Ash Valley RNA 16 mi. E. of Adin 1554 Comment
  POM360351  Hemizonia lobbii J. T. Howell 1934-7-3 12380 Lassen Big Valley, near Bieber Comment
  CHSC68750  Hesperochiron californicus Vernon H. Oswald; Lowell Ahart 1997-5-27 8525 Lassen Coyote Flat on Forest Route 38N04 4.7 mi northeast of Hwy. 139. 1798 Comment
  NY1082476  Hesperochiron californicus A. Tiehm 1986-5-12 10348 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  SEINET5499704  Hesperochiron californicus N. H. Holmgren, P. K. Holmgren 1978-6-11 8910 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  UC1567384  Hesperochiron californicus G. Schoolcraft 1989-5-3 1866 Lassen s of Karlo (n end of Secret Valley); Secret Valley 1341 Comment
  UC1609376  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1993-5-12 5377 Lassen 3.5 mi nw of A21 to Westwood (Canal crossing Highway 44, on the n side of the road and on the e side of the canal) 1729 Comment
  CHSC5258  Hesperochiron pumilus J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek near Eagle Lake. 1584 Comment
  HSC82201  Hesperolinon micranthum Thomas W. Nelson, Jane Nelson 1980-7-6 6022 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 Comment
  JEPS27188  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1670 Lassen about 4 mi sw junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  POM87378  Hesperolinon micranthum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1094379  Hesperolinon micranthum R. C. Bacigalupi with S. Galen Smith 1957-6-28 5995 Lassen 6.0 mi n Madeline (on Highway 395) 1676 Comment
  UC1601275  Hesperolinon micranthum Leo Whitney 1934-7-8 1793 Lassen open flat near Harvey Valley Spring (ca 14 mi w of Eagle Lake); Lassen National Forest Comment
  UC867806  Hesperolinon micranthum C. L. Hitchcock 1940-5-26 6618 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SJSU7861  Hesperolinon micranthum V. Hardham 1965-7-12 127 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou County) on State Rt 139 1463 Comment
  UC17267  Hesperolinon micranthum Mrs. Brandegee Lassen Comment
  JEPS87469  Hesperostipa comata Vernon H. Oswald and Lowell Ahart 1993-6-14 5542 Lassen n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  JEPS103227  Heterocodon rariflorum G. Schoolcraft 1997-7-14 2609 Lassen Decomposed granite S of Milford 1402 Comment
  NY783479  Heuchera rubescens G. Schoolcraft 1983-6-28 1037 Lassen Wendel Canyon 1645.9 Comment
  CAS-BOT-BC312417  Hieracium albiflorum Clare B. Hardham 1971-8-22 18378 Lassen Diamond Mountain 2133 Comment
  JEPS28670  Hieracium albiflorum George W. Gillett 1957-7-24 895 Lassen dry flats between Cameron Meadow and Snag Lake; Lassen Volcanic National Park 1950 Comment
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  POM36066  Hieracium albiflorum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC32790  Hieracium horridum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  UC92036  Hieracium scouleri unknown 1892-6-28 Lassen Janesville Comment
  CHSC75503  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1999-6-9 9737 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395, springy marsh surrounded by sagebrush scrub. 1353 Comment
  CHSC107997  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2011-6-20 17482 Lassen On the east bank 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
  CHSC112406  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18728 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
  CHSC99281  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  POM352505  Hordeum arizonicum A. A. Beetle 1941-6-28 s.n. Lassen 6 mi south of Ravendale, Lower slopes of Observation Peak Comment
  UCD85482  Hordeum brachyantherum L. Whitney 1935-3-28 Lassen Fruit Growers Supply Co. Camp #10. Comment
  CHSC65367  Hordeum jubatum Vernon H. Oswald; Lowell Ahart 1995-8-14 7189 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Roadside pond. 1645 Comment
  JEPS114836  Hordeum jubatum Lowell Ahart, John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  RSA123433  Hordeum jubatum H. S. Yates 1936-8-11 6075 Lassen Baxter Creek 1280 Comment
  SEINET10591500  Hordeum jubatum Vernon H. Oswald, Lowell Ahart 1995-8-14 Oswald 7189 Lassen T33N R14E S2 NE1/4, Modoc Plateau, sagebrush scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Growing in moist soil along the margin of a large roadside pond. 1646 Comment
  CAS-BOT-BC289575  Hordeum marinum subsp. gussoneanum Geo. A. Fischer 1928-5-27 23 Lassen Willow Springs, Lassen Forest 1280 Comment
  CHSC117517  Hordeum marinum subsp. gussoneanum Lowell Ahart; John Dittes 2016-7-13 21147 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCD55288  Hordeum murinum subsp. glaucum Ellen Dean; Gary Schoolcraft 2006-5-16 3107 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
  CAS-BOT-BC284896  Hordeum murinum subsp. leporinum John Thomas Howell 1973-7-10 49801 Lassen Susanville 1295 Comment
  CAS-BOT-BC537888  Horkelia tridentata var. flavescens A. M. Vollmer; L. Beane 1953-7-1 59 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC65301  Hornungia procumbens Vernon H. Oswald; Lowell Ahart 1995-8-14 7202 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) on the E side of Horse Lake, 13.5 mi W of Hwy. 395, N of Susanville. On the shore of the lake. 1560 Comment
  CHSC66387  Hosackia oblongifolia var. oblongifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7818 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marshy pool at the 6.0 mile post of Devils Corral Trailhead. 1420 Comment
  JEPS87416  Hydrophyllum capitatum var. alpinum Vernon H. Oswald and Lowell Ahart 1993-5-12 5378 Lassen 3.5 mi nw of A21 to Westwood (on n side of road and on e side of Canal crossing Hwy 44) 1729 Comment
  UC1069096  Hydrophyllum capitatum var. alpinum A. Simontacchi 1940-5-10 692 Lassen 4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad. 1752 Comment
  RSA122624  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen MDM, Burgess Spr. Exp. Range. 1753 Comment
  CHSC5266  Hypericum formosum var. scouleri J. Wolf 1946-6-20 Lassen Eagle Lake, Grasshopper Valley. 1624 Comment
  RSA746512  Hypericum perforatum K. M. Meyer, A. Townesmith 2007-7-19 140 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  SEINET10720226  Hypericum perforatum Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 140 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC401310  Hypericum scouleri B. C. Cain 1925-8-24 87 Lassen 1 mile below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  SJSU10961  Hypericum scouleri H. L. Buckalew 1961-7-10 Lassen Blue L Comment
  CDA24887  Idahoa scapigera T. C. Fuller 1963-6-1 10640 a Lassen 0.25 mile north of Willow Springs Campground, 3.1 miles southeast of Pittville-Susanville Road, 12.4 miles (road) south of Pittville. 0 Comment
  CHSC81032  Iliamna bakeri Vernon H. Oswald 2001-7-14 10050 Lassen Hwy 139 at the 11 mile post between Susanville and Eagle Lake. 1706 Comment
  NY52524  Iliamna bakeri G. Schoolcraft 1983-8-22 1142 Lassen Along Ash Valley Rd. west of Madeline 1737.4 Comment
  HSC63937  Ipomopsis aggregata Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak. alongside rd. to lookout 2317 Comment
  CHSC1230  Ipomopsis aggregata subsp. formosissima K. Chew 1954-7-7 Lassen NW end of Eagle Lake. 1615 Comment
  CHSC13883  Ipomopsis aggregata subsp. formosissima S. Villard 1973-7-12 65 Lassen Gallatin Peak. 1066 Comment
  CHSC23502  Ipomopsis aggregata subsp. formosissima Wayne O. Baum 1970-6-30 70 -1 Lassen E. slope of Gallatin Peak. 1981 Comment
  UC1523747  Ipomopsis congesta Gary Schoolcraft 1981-7-15 460 Lassen Ash Valley 1539 Comment
  JEPS94604  Ipomopsis congesta subsp. congesta Vernon H. Oswald and Lowell Ahart 1997-5-27 8493 Lassen w side of Hwy 139 s Willow Creek Guard Station (0.9 mi s of Forest Rd. 38N04 to Coyote Flat) 1577 Comment
  CHSC36461  Iris missouriensis Susan H. Euing 1982-6-4 15 Lassen Ca. 3/4 mi n of Murrer's Upper Meadow. 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
  UC117143  Iris missouriensis Mrs. R. M. Austin 1879-1 302 Lassen Eagle Lake 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
  UC2062876  Isoetes nuttallii Forrest Freund 2016-5-18 257 Lassen Hog flat reservoir. Comment
  CHSC77255  Isolepis G. Schoolcraft 1997-8-4 2675 Lassen W of Willow Creek Valley. 1554 Comment
  CAS-BOT-BC324778  Iva axillaris P. Monnet 1913-7-4 826 Lassen Honey Lake 1219 Comment
  RSA126721  Iva axillaris subsp. robustior Peter H. Raven, Otto T. Solbrig 1958-6-17 13265 Lassen Along Hwy 395, 11.8 miles NE of Litchfied Comment
  UC73973  Iva axillaris subsp. robustior J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Song Valley; Honey Lake Valley Comment
  CHSC35570  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  HSC71700  Ivesia paniculata Gary Schoolcraft 1981-8-18 564 Lassen 1585 Comment
  RSA59709  Ivesia paniculata E. K. Balls 1950-5-19 14783 Lassen 16.5 miles W of Madeline on road from Adin 1677 Comment
  SEINET3860195  Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 mi E of Adin.; 0 1554 Comment
  JEPS109644  Ivesia sericoleuca Dean W. Taylor 2002-6-21 18168 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  UC1133735  Juncus balticus A. Simontacchi 1940-5-17 738 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  HSC26016  Juncus bryoides F. J. Hermann 1972-5-17 24752 Lassen 8 mi. W of Susanville 1677 Comment
  SEINET3877716  Juncus bufonius Arnold Tiehm, Jan Nachlinger; Gary Schoolcraft 1984-6-25 8824 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81.; 0 1829 Comment
  JEPS126565  Juncus hemiendytus var. hemiendytus Lowell Ahart, John Dittes 2016-6-7 20991 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC1543894  Juncus luciensis John Thomas Howell and Louella Bass 1974-7-10 50538 Lassen Elysian Valley Sierra Nevada 1325 Comment
  SEINET10533379  Juncus mexicanus Douglas G. LeDoux, David B. Dunn 1975-5-25 LeDoux 791 Lassen Collected 3 miles n of milford on hwy. 395 At honey lake campgrounds Comment
  RSA201265  Juncus nevadensis J. T. Howell 1959-9-23 34884 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UC1133741  Juncus nevadensis A. Simontacchi 1940-6-7 894 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1594640  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5124 Lassen 1.3 mi n of Hwy 44 and McCoy Flat Reservoir (Swamp on Bridge Creek, w of Cinder Pit on the logging road paralleling the e side of Bridge Creek, between Old Station and Susanville) 1719 Comment
  JEPS121289  Juncus nevadensis var. nevadensis Lowell Ahart, John Dittes 2013-7-23 18906 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1133742  Juncus tenuis Robert W. Gardner 1939-6-28 G- 33 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1706 Comment
  JEPS126568  Juncus tiehmii Lowell Ahart, John Dittes 2016-6-7 20989 Lassen 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CAS-BOT-BC279914  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley 1740 Comment
  CHSC66417  Juncus trilocularis Vernon H. Oswald; Lowell Ahart 1996-6-17 7805 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  RSA78920  Juniperus occidentalis E. K. Balls, P. C. Everett 1952-10-10 18141 Lassen 8 mi SE of ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
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Apr 29 2013
  UCR164507  Juniperus occidentalis Maile Neel 2000-4-29 G- 4 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10859617  Juniperus occidentalis Leila M. Shultz, John S. Shultz 1985-6-23 Shultz 8601 Lassen 41 miles north of Susanville on highway 395. Dark basaltic soils. Western Juniper-sagebrush-bitterbrush association. 1435 Comment
  RSA235556  Juniperus occidentalis var. occidentalis Noel Holmgren, Patricia K. Holmgren 1970-7-28 4625 Lassen North end of Petersen Mountain, near US 395, 8 miles north of Halleluja Junction (junction with Calif. 70). 1524 Comment
  SEINET11056685  Juniperus occidentalis var. occidentalis D. Charlet 1994-7-6 1923 Lassen Susanville, corner of Main and Fair Streets. 1292 Comment
  NY20366  Juniperus osteosperma J. T. Howell 1961-9-26 36969 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UCR3784  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 03 Lassen Calif. Hwy 70 (alt. US Hwy 40), 1.6 mi west of its junction w/ US Hwy 395 Comment
  UCR3789  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 07 Lassen 5.2-5.4 mi north of the junction of US Hwy 395 w/ Calif. Hwy 70 (alt. US Hwy 40) 1479 Comment
  CHSC6262  Kelloggia galioides W. Vinyard 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 Comment
  UC1137699  Kelloggia galioides A. Simontacchi 1940-6-14 860 Lassen 7.5 mi wsw Schoonamaker Lake; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UCD18974  Kelloggia galioides Raymond D. Ratliff 1965-7-29 34 Lassen Lassen National Forest, Lower Pine Creek Allotment (LPC 13-2). 1719 Comment
  UC506998  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-7-12 F 205 Lassen Grass Valley; Lassen Forest, Grass Valley 1699 Comment
  UCD85786  Koeleria macrantha Beecher Crampton 1960-6-18 5727 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  UCD86011  Koeleria macrantha L. Whitney 1935-6-24 s.n. Lassen Squaw Valley. Comment
  CAS-BOT-BC271330  Koeleria pyramidata David D. Keck 1944-7-8 5447 A Lassen 2 mi. E. of Westwood, in meadow leading down to Mountain Meadows Reservoir 1524 Comment
  UC726003  Kyhosia bolanderi A. A. Heller 1938-9-1 15342 Lassen about 2 mi e of Westwood 1524 Comment
  UC891450  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen about a mile e of Westwood Comment
  UCR67465  Lactuca saligna George K. Helmkamp 1990-9-23 G- 13 Lassen north of Ravendale 1677 Comment
  CAS-BOT-BC341483  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  POM204133  Lagophylla ramosissima J. T. Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles S of Susanville. Comment
  UC33057  Lagophylla ramosissima M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  POM54286  Lagophylla ramosissima Milo S. Baker 1894-7-5 s.n. Lassen Dixey Valley. Comment
  RSA795323  Lagophylla ramosissima subsp. ramosissima L. Ahart, John Dittes 2010-7-31 16997 Lassen On the north side of the road, about 5 yards west 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
  JEPS67993  Lappula redowskii W. L. Jepson 1918-8-2 7765 Lassen Beckwith Pass 1463 Comment
  JEPS125806  Lappula redowskii var. cupulata William Harnach 2010-6-1 1240 Lassen Approximately 10 miles NE of Doyle on Fort Sage Road then 1 mile N on Cal -Neva Road. Honey Lake Valley. Comment
  JEPS108558  Lathyrus nevadensis var. nevadensis L. P. Janeway 2005-7-3 8451 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout 1536 Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CHSC7632  Layia glandulosa Beverley J. Wise 1969-5-3 25 Lassen 4.3 mi. east on Las. Co. Rd. 338 beyond junction with Hwy 395. 1554 Comment
  CHSC91322  Layia glandulosa Lowell Ahart; John Dittes 2005-6-1 11889 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
  JEPS107446  Layia glandulosa Lowell Ahart, John Dittes 2005-6-1 11889 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
  CAS-BOT-BC321492  Layia glandulosa P. Monnet 1913-7-4 822 Lassen Hot Springs Peak 2133 Comment
  RSA164325  Layia glandulosa subsp. glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, south of Susanville. Plants of the Sierra Nevada Mountains. Comment
  HSC95316  Lemna minuta Gordon Leppig 1998-8-17 1048 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC4789  Lemna trisulca R. Carter 1967-7-13 591 Lassen Ca. 5 mi E of Eagle Lake Biology Station, at point where rd. comes nearest to Willow Creek. 1560 Comment
  UC1101266  Lemna trisulca Malcolm A. Nobs, S. Galen Smith 1949-7-22 1076 Lassen 10 mi n of Susanville (along Willow Creek, Willow Creek Valley); Willow Creek Valley, Willow Creek Comment
  SD117142  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek, at bridge on Highway 139, approximately10 miles north of Susanville. 1509 Comment
  HSC68797  Lepidium dictyotum Gary Schoolcraft 1980-5-7 221 Lassen Honey Lake Island, N shore 1220 Comment
  NY23186  Lepidium dictyotum A. Tiehm 1980-5-29 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north-northwest of Wendel 1231.4 Comment
  UC10677  Lepidium dictyotum var. acutidens M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  CDA37688  Lepidium latifolium Robin Breckenridge 2004-7-1 s.n. Lassen East of Susanville. 0 Comment
  CHSC36487  Lepidium perfoliatum Margaret E. Halloran 1982-6-2 1 Lassen Ca. 2 mi e jct of Hwy 139 and Ravendale Rd. Comment
  JEPS114647  Lepidium perfoliatum Lowell Ahart, John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  CHSC13629  Leptosiphon harknessii M. S. Taylor 1974-6-25 290 Lassen Vernal pool ca. 4 ft s of road, ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville. 1524 Comment
  UC1583992  Lewisia nevadensis G. Schoolcraft 1990-5-15 2044 Lassen 3 mi s Nubieber; John's Valley 1402 Comment
  UCD64234  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mi. N of Sagehen Summit on W side of Hwy 395. 1706 Comment
  UCD64266  Leymus cinereus A. H. Shunk 1923-7-28 Lassen Madeline. Comment
  RSA126619  Leymus condensatus A. Simontacchi 1940-6-30 946 Lassen Halls Flat: 8.6 miles W. of Burgees Spring 1700 Comment
  CAS-BOT-BC274463  Leymus triticoides J. Burtt Davy 1897-6-17 3320 Lassen Honey Lake Valley Comment
  CAS-BOT-BC274466  Leymus triticoides John Thomas Howell 1974-7-8 50467 Lassen Susanville 1295 Comment
  CDA34729  Leymus triticoides 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 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 air miles southeast of Adin. Comment
  UCD86623  Leymus triticoides G. Douglas Barbe 1974-8-20 1924 Lassen Upper Long Valley. Hallelujah Junction, NW corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CHSC13735  Lilium washingtonianum subsp. washingtonianum S. Villard 1973-7-3 58 Lassen On west side of county road going from Susanville to Plumas National Forest, 2 miles after pavement ends. Comment
  UC1567430  Limosella acaulis G. Schoolcraft 1989-7-24 1995 Lassen along n shore Said Valley Reservoir; n shore of Said Valley Reservoir 1630 Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  SEINET10496792  Linanthus ciliatus Mary Susan Taylor 1974-1 Taylor 284 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1025096  Linanthus harknessii Leo Whitney 1934-5-27 1639 Lassen near Crater Lake 1828 Comment
  UC1536989  Linum lewisii Gordon H. True 1936-6-25 538 Lassen e of Harvey Ranger Station (Harvey Valley); Harvey Valley 1798 Comment
  RSA795325  Linum lewisii var. lewisii L. Ahart, John Dittes 2010-7-31 16981 Lassen 10 yards northeast 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
  UC1483825  Lithophragma glabrum G. Schoolcraft 1980-4-8 201 Lassen e side Shaffer Mountain; e side Shaffer Mountain 1463 Comment
  CAS-BOT-BC435431  Lithophragma glabrum H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13.5 miles west of Susanville Comment
  SEINET6032241  Lithophragma glabrum J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin Comment
  JEPS47654  Lithophragma parviflorum T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  HSC63953  Lithophragma parviflorum Teresa Prendusi 1980-4-30 1113 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  CHSC11773  Lithophragma tenellum Wayne O. Baum 1971-6-15 71 -1 Lassen South side of fire trail approx. 100 ft. from Rd. 5 at extreme S. E. corner of Gallatin Peak. 1920 Comment
  CHSC25086  Lithophragma tenellum K. R. Stern 1967-6-25 2433 Lassen Meadow on road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  JEPS47671  Lithophragma tenellum Milo S. Baker 1890-1 Lassen Milford Comment
  UC1127235  Lithophragma tenellum A. Simontacchi 1940-5-10 693 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  JEPS21376  Lithospermum ruderale Brown and Wieslander 1922-6-13 64 Lassen Martin Springs Eagle Lake (Eagle Lake) Comment
  POM72685  Lithospermum ruderale Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CHSC12951  Lomatium K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5842 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  SEINET8588605  Lomatium austiniae A. Rosenblum, A. Ortega 2015-5-28 NV 030 -1063 Lassen Plumas allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line 1460 Comment
  POM260287  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA27417  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CAS-BOT-BC211117  Lomatium canbyi B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6552 Lassen Just S of Ravendale 1580 Comment
  SEINET178371  Lomatium dissectum var. multifidum Marcus E. Jones 1897-6-25 Lassen Susanville. 1341 Comment
  RSA452590  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  NY1141204  Lomatium donnellii M. Lavin 1982-5-16 4064 Lassen 1.5 miles east of Hallelujah Junction (U.S. 395). 22 air miles 325° from Reno, Nevada. West side of Petersen Range 1676 Comment
  SEINET183892  Lomatium leptocarpum L. Contance 1938-6-11 2327 Lassen 5 miles southwest of Susanville 1372 Comment
  NY1066293  Lomatium macrocarpum B. M. Bartholomew 1993-5-13 6554 Lassen Just south of Ravendale. 1580 Comment
  CHSC106671  Lomatium nevadense B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  POM78183  Lomatium nevadense Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  UC1123036  Lomatium nevadense var. parishii K. E. Bradshaw 1939-5-27 241 A Lassen Plot 39-1 Black Mt. Exp. Forest (Lassen Nat'l Forest); , Halls Flat Quad., Black Mt. Exp. Forest Comment
  CHSC29850  Lomatium nudicaule Robin Ondricek 1978-6-7 42 Lassen Lower Dry Lake along outer edges of shoreline. 1645 Comment
  CHSC106684  Lomatium plummerae B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CAS-BOT-BC217795  Lomatium ravenii B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6564 Lassen U.S. Hwy 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield 1330 Comment
  CAS-BOT-BC217800  Lomatium ravenii David D. Keck; J. Clausen 1935-6-24 3738 Lassen 2 mi. S. of Ravendale 1464 Comment
  JEPS28836 Image available Lomatium ravenii Lincoln Constance and Emil DiFulvio 1962-4-16 3747 Lassen 1 mi. s. Ravendale 1615 Comment
  OBI48161  Lomatium ravenii Rhonda Riggins 1989-4-27 1641 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale. 1311 Comment
  UC1479584 Image available Lomatium ravenii Gary Schoolcraft 1980-5-6 218 A Lassen Honey Lake Island 1219 Comment
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Oct 26 2017
  OBI81733  Lomatium ravenii Tracey Call, Viola Call 1961-5-30 2048 Lassen about 2 miles south of Ravendale Comment
  SEINET10693768 Image available Lomatium ravenii Lincoln Constance, Rimo Bacigalupi 1959-6-14 Constance 3672 Lassen Open, slightly alkaline flat with Artemisia, Blepharipappus, Cryptantha and Eriogonum. One mile south of Ravendale. 1463 Comment
  POM78598  Lomatium triternatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  POM78599  Lomatium triternatum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC13733  Lomatium triternatum var. macrocarpum C. Freeman 1973-6-27 7 Lassen Collected roadside ca. 1 mi n of the road crossing. Comment
  CHSC29875  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-6 31 Lassen Ca. 1 mi from ELFS where the power lines cross the road. 1572 Comment
  RSA0049611  Lomatium vaginatum Dean Wm. Taylor 2012-6-7 21232 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  CHSC58490  Lonicera conjugialis Vernon H. Oswald 1992-7-3 5050 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1mi N of Cameron Meadow. 1950 Comment
  RSA18256  Lonicera conjugialis C. B. Wolf 1929-9-1 3786 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  CAS-BOT-BC200923  Lotus John Thomas Howell 1976-7-19 51953 Lassen Southwest of Susanville on Gold Run Road 1341 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
  RSA122901  Lotus unifoliolatus L. R. Short, J. Warren 1936-6-23 S- 447 Lassen Burgess Spring, Exp Range. Comment
  RSA715662  Lotus unifoliolatus L. Ahart 2005-6-2 11970 -A Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CHSC110911  Ludwigia palustris Lowell Ahart; John Dittes 2012-7-9 18291 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC4820  Lupinus R. Carter 1967-7-16 618 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca. 12 mi n of Susanville, on s side of rd. Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  SEINET7123961 Image available Lupinus andersonii E. A. Bourdo Jr. 1972-1 s.n. Lassen Lassen National Park Comment
  JEPS64900  Lupinus angustiflorus Brown and Wieslander 1922-7-23 61 Lassen Martin Springs , Martin Springs (Eagle Lake) Comment
  CHSC905  Lupinus arbustus R. Gein 1946-6-20 Lassen Mt. Fredonyer. 2133 Comment
  CAS-BOT-BC208728  Lupinus argenteus var. heteranthus F. Payne 1929-7-12 74 Lassen Lost Lake, Warner Mts. 2286 Comment
  CAS-BOT-BC208737  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21501 Lassen Reserboir above Grasshopper Valley, Lassen Forest 1500 Comment
  CAS-BOT-BC208745  Lupinus argenteus var. heteranthus John Thomas Howell 1974-7-8 50461 Lassen Susanville - Sierra Nevada 1295 Comment
  CAS-BOT-BC208753  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 mi. W of Doyle Comment
  CAS-BOT-BC208756  Lupinus argenteus var. heteranthus Frank W. Peirson 1926-6-24 6852 Lassen Madeline Plains Comment
  CAS-BOT-BC208760  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47444 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208762  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-7-17 47699 Lassen Park Highway, Summit Lake Camp - Lassen Volcanic National Park Comment
  CHSC909  Lupinus argenteus var. heteranthus L. Harman 1946-6-22 Lassen Webb's camp, Eagle Lake. 1554 Comment
  CHSC93684  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2005-6-1 11873 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.8 miles (air) northwest of Hallelujah Junction. 1448 Comment
  NY736925  Lupinus argenteus var. heteranthus P. Gallian 1971-6-2 458 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  NY736927  Lupinus argenteus var. heteranthus J. T. Howell 1974-7-8 50461 Lassen Susanville 1295 Comment
  UC1129448  Lupinus argenteus var. heteranthus A. E. Wieslander June 1929 109 Lassen Constantia; Sierraville Quad. Comment
  UC1924256  Lupinus argenteus var. heteranthus Debra Valov 2004-5-31 2004231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC727156  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen along U.S. Highway #395 just outside Johnstonville; just outside of Johnstonville Comment
  UCD106820  Lupinus argenteus var. heteranthus Leo Whitney 1934-7-17 s.n. Lassen Lassen N. F. Comment
  SEINET10484990  Lupinus brevicaulis Gary Schoolcraft 1980-5-30 Schoolcraft 246 Lassen Lassen co. T31n, r15e, se1/4, sec. 11. Elev. 4460'. On s side of rd. Into Diaz ranch at n end of mud flat. Associated with artemisia tridentata, Chrysothamnus spp., Sitanion hystrix. 1359 Comment
  CAS-BOT-BC196641  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  SEINET3145129  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 mi S of Doyle 1372 Comment
  RSA39736  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford. 1265 Comment
  SEINET10490608  Lupinus caudatus subsp. caudatus Jeffrey Huber 1971-6-2 Huber 145 Lassen 6 mi. N of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  SEINET10490714  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 481 Lassen 5 mi. S of milford near honey lake on us hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - jeffery pine on mountain range to w at Approx. The same altitude. 1250 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
  POM23945  Lupinus confertus F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  RSA339168  Lupinus confertus Margaret J. Williams 1983-7-31 s.n. Lassen Roadside near Janesville. 1280 Comment
  RSA87160  Lupinus confertus Mary DeDecker 1955-8-25 262 Lassen Honey Lake: Highway 395. Comment
  SD51227  Lupinus confertus Darley F. Howe 1960-9-21 2993 Lassen 2 miles north of Janesvill on Hwy 395 1280 Comment
  SEINET10687175  Lupinus croceus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 154 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  JEPS65081  Lupinus lepidus var. confertus W. L. Jepson Aug. 1918 7798 Lassen Raker Ranch near Buntingville; Raker Ranch naer Buntingville 1219 Comment
  UC127007  Lupinus lepidus var. confertus M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  SEINET8051629  Lupinus lepidus var. confertus M. J. Williams 1983-7-31 83- 126 -1 Lassen Roadside near Janesville 1280 Comment
  CHSC5290  Lupinus lepidus var. sellulus 1944-2-7 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  JEPS88206  Lupinus lepidus var. sellulus Vernon H. Oswald and Lowell Ahart 1996-6-24 7867 Lassen Papoose Meadows located 0.5 mi e of Eagle Lake Rd (A!), and 2.5 mi s of Eagle Lake, 0.2 mi s of the cabins Papoose Meadows; Modoc Plateau, Papoose Meadows 1633 Comment
  UC126929  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  UCD107961  Lupinus leucophyllus G. Schoolcraft 1994-6-9 2347 Lassen 1 1/2 m. NE of Hwy. 139 on Grasshopper-Temo Rd. 1615 Comment
  UCD107964  Lupinus leucophyllus R. Tofsrud 1951-7-13 s.n. Lassen Bieber area, Albaugh Ranch. Comment
  JEPS114708  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET10450708  Lupinus nevadensis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2595 Lassen Hallelujah jct. Intersection of u.s. Hwy. 395 And state hwy. 70. In open waste Area adjacent to artemisia tridentata community. 1433 Comment
  RSA18697  Lupinus onustus Marcus E. Jones 1887-06 s.n. Lassen Susanville Comment
  SEINET10871085  Lupinus polycarpus Marcus E. Jones 1897-6-26 Jones s.n. Lassen Susanville, perkin's ranch. 1463 Comment
  NY747608  Lupinus polyphyllus var. saxosus G. Schoolcraft 1985-5-15 1386 Lassen Along Hwy 139 about 2 miles [illegible word] of Hayden Hill turnoff 1463 Comment
  SEINET10486219  Lupinus saxosus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2575 Lassen 6 mi s of adin; along state hwy. 139 Right-of-way. In basalt-clay, grassy road Bank. Artemisia-juniper association. 1372 Comment
  SEINET6191823 Image available Lupinus sellulus subsp. sellulus B. J. Cox 1971-1 3186 Lassen 3 mi E of Westwood on CA 36 1608 Comment
  HSC28314  Lupinus sellulus var. lobbii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19159 Lassen 3 mi. N of Westwood Comment
  POM252848  Lupinus subvexus var. subvexus A. A. Heller 1938-6-23 15219 Lassen Along U. S. H ighway 395 between Termo and Madeline. 1524 Comment
  CHSC4269  Luzula macrantha K. R. Stern 1967-6-24 2419 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagel Lake Biological Station. 1554 Comment
  CHSC93681  Lythrum hyssopifolia Lowell Ahart; John Dittes 2005-6-2 11969 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  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
  JEPS88431  Lythrum portula Vernon H. Oswald and Lowell Ahart 1996-8-1 8104 Lassen sw of Westwood (ne of Indian Ole Dam, Mountain Meadows Reservoir); Mountain Meadows Reservoir Comment
  CHSC112974  Lythrum tribracteatum Lowell Ahart; John Dittes 2013-7-23 18902 Lassen Dry drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121287  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 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
  CDA8224  Machaeranthera canescens T. C. Fuller 1964-10-8 12703 Lassen Head of Secret Valley, south of Ravendale. 0 Comment
  UC905682  Madia citrigracilis David D. Keck 1930-7-23 949 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  CAS-BOT-BC343695  Madia elegans Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  CHSC4904  Madia elegans Bill Wilson 1967-7-15 163 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  SEINET11601338 Image available Madia elegans J. A. Young 1983-8-4 s.n. Lassen Janesville Comment
  UC89447  Madia elegans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC89366  Madia exigua T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  JEPS89663  Madia glomerata Dean W. Taylor 1989-8-4 10423 Lassen Hwy. 299 at Muck Valley Rd. ca. 2 mi. w. Nubieber (Modoc Plateau); Modoc Plateau 1539 Comment
  UC1594645  Madia glomerata Vernon H. Oswald and Lowell Ahart 1992-7-16 5130 Lassen on si side Bridge Creek Spring Road (County Rd 112, Forest Rd. 31N06) (ca 0.4 mi e of Champs Flat Rd (County Rd 105, Forest Rd 32N02), between Old Station and Susanville); Feather Lake 1749 Comment
  CAS-BOT-BC334691  Madia glomerata Alice Eastwood 1912-8-22 1801 Lassen Morgans Springs, Lassen Butte Region Comment
  CHSC66376  Madia gracilis Vernon H. Oswald; Lowell Ahart 1996-6-17 7783 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  SEINET11601445 Image available Madia gracilis J. A. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, Ca. 1372 Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA715984  Madia minima L. Ahart, John Dittes 2005-6-2 11940 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
  JEPS128415  Maianthemum stellatum Catherine Bauer with Ellen Bauer Benson 2017-8-16 21 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  JEPS103229  Malacothrix floccifera G. Schoolcraft 1997-6-24 2595 Lassen About 4 miles W of Doyle on S side of Doyle Grade Road 1767 Comment
  SEINET11601669 Image available Malacothrix glabrata F. B. Henning 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  CAS-BOT-BC348029  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi. n. Wendel Rd. along Skedaddle Ranch Rd. Comment
  SEINET11601767 Image available Malacothrix torreyi A. Tiehm 1978-5-15 4159 Lassen 0.4 mile west of the Nevada stateline on highway 81 from Gerlach to Cedarville Comment
  JEPS124803 Image available Malva neglecta Lynne C. Carter 1967-7-11 82 Lassen 1.1 mile south of Millford on HWY 395, west of Honey Lake. Comment
  RSA0011558  Marsilea vestita R. F. Thorne, Larry E. DeBuhr 1975-8-22 46994 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC65287  Marsilea vestita subsp. vestita Vernon H. Oswald; Lowell Ahart 1995-8-14 7201 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  CHSC99294  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  SEINET10474309  Matricaria matricarioides Mary Susan Taylor 1982-8-19 Taylor 5025 A Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  CHSC68889  Melica fugax Vernon Oswald; Lowell Ahart 1997-6-24 8645 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC71342  Melica fugax Vernon H. Oswald 1998-6-22 9232 Lassen Champs Flat Rd. (A-21) 1.8 mi north of Hwy. 44, ca. 18 air mi north of Westwood. 1749 Comment
  UC38833  Melica fugax M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC5298  Mentzelia albicaulis 1944-6-23 Lassen Eagle Lake. 1584 Comment
  JEPS117360  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  JEPS94107  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9137 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  RSA715553  Mentzelia albicaulis L. Ahart, John Dittes 2005-6-1 11888 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  SFV12339  Mentzelia albicaulis J. Major 1966-6-24 s. n. Lassen Warner Mountains Above Blue Lake, about 18 miles (airline) southeast of Likely. 1905 Comment
  UC1609094  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1993-7-8 5654 Lassen 1.9 m N Hwy. 44 (on the SE edge of Poison Lake.); Pittville Rd.(Lassen 111,36N01); T32N R7E SE1/4 SE 1/4 Sec. 4 1709 Comment
  RSA152590  Mentzelia albicaulis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16340 Lassen 13.5 mi. E. of Susanville. Comment
  UCD117207  Mentzelia albicaulis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CHSC48605  Mentzelia congesta Vernon Oswald 1986-5-28 2054 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  SEINET8707736  Mentzelia congesta B. L. Wilson, D. Lytjen, N. Otting. 2005-7-27 11547 Lassen Pine Dunes, an exclosure, S of Buckhorn Road and ca 1 mile NW of Buckhorn Reservoir. 1716 Comment
  CHSC13851  Mentzelia dispersa J. Grove 1973-7-30 Lassen At Sugar Pine Basin. 1524 Comment
  CHSC29933  Mentzelia dispersa Robin L. Ondricek 1978-6-22 67 Lassen In rocky soil among Jeffrey Pines at the n end of Mahogany Lake. 2057 Comment
  CHSC93682  Mentzelia dispersa Lowell Ahart; John Dittes 2005-6-1 11872 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
  JEPS107292  Mentzelia dispersa Lowell Ahart, John Dittes 2005-6-1 11872 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
  POM260353  Mentzelia dispersa C. L. Hitchcock 1940-5-26 6606 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  RSA152663  Mentzelia dispersa I. L. Wiggins, Dorothy Wiggins 1961-6-10 16323 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  RSA719900  Mentzelia dispersa Michael A. Vincent, K. Levings 2006-7-29 12904 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  SJSU8590  Mentzelia laevicaulis M. D. Fleschner 1965-7-12 112 Lassen by Hwy 395 near S shore Honey L c. 2 mi SE of Milford Comment
  RSA202434  Mentzelia montana Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of Likely) 1905 Comment
  SEINET194902  Mentzelia pinetorum A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. Transition Life Zone. 1524 Comment
  CHSC27164  Menyanthes trifoliata J. D. Prouty 1978-7-28 36 Lassen Murrer's Upper Meadow. 1548 Comment
  SBBG2836  Micranthes integrifolia H. and M. Dearing 1938-6-30 2232 Lassen Box 20 mi N of Susanville [Hwy 44] 1066 Comment
  CHSC68767  Micranthes nidifica Vernon H. Oswald; Lowell Ahart 1997-5-27 8499 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the margin of the flood plain of a small creek paralleling the road. 1546 Comment
  CHSC6266  Micranthes oregana M. West 1946-7-12 Lassen Stephens Ranch. 1905 Comment
  CHSC99239  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  JEPS88326  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1996-6-24 7843 Lassen Papoose Meados located ca.0/5 mi E of Eagle Lake Road (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau. 1633 Comment
  RSA14498  Microseris laciniata subsp. laciniata Elmer I. Applegate 1929-6-24 5879 Lassen Big Valley, near Bieber Comment
  CHSC29930  Microsteris gracilis Robin L. Ondricek 1978-6-20 65 Lassen Callatin Burn, 1.8 mi s of Five Corners. 2011 Comment
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Jan 31 2011
  UCD55154  Microsteris gracilis Ellen Dean 2006-5-15 3042 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  RSA122927  Microsteris gracilis subsp. gracilis Anonymous 1936-5-7 S- 343 Lassen Lassen National Forest, MDM, Burgess Spr. Exp. Range 1738 Comment
  RSA104220  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 21757 Lassen Sage brush flat about Lassen County: 8 miles S of Madeline 1280 Comment
  SD62167  Miltitzia lutea Rimo Bacigalupi, G. T. Robbins 1955-7-21 5429 Lassen Southeastern part of Secret Valley, along Smoke Creek Ranch Road, 8.0 miles east of U. S. Highway 395. 1402 Comment
  SEINET13764907  Mimetanthe pilosa M. J. Williams 1974-7-26 74 -L-29 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UCR201581  Mimulus Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  UC1778584  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen Moist clayey soil. East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track and wet ditch. 1749 Comment
  UC1037226  Mimulus breweri Leo Whitney 1933-8-14 1596 a Lassen ca. 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1012180  Mimulus guttatus Francis W. Pennell 1940-6-10 25778 Lassen 3 mi e Westwood (Route 36) 1584 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
  JEPS63626  Mimulus nanus var. jepsonii G. S. Crew and C. S. Robinson 1927-6-25 23 Lassen near Wetwood Junction; Lassen Forest, Norval Flat 1747 Comment
  LA209350  Mimulus nanus var. mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 sn Lassen Near Old Chat Comment
  LA95554  Mimulus nanus var. mephiticus Frank W. Peirson; 6853 Lassen Madeline Plain Comment
  UC124340  Mimulus nanus var. mephiticus Gustav Eisen 1891-1 Lassen Honey Lake Comment
  UC1537591  Mimulus nanus var. mephiticus Gordon H. True Jr. 1936-6-26 548 Lassen 2 mi e Eagle Lake (head of creek); Willow Creek 1584 Comment
  RSA60367  Mimulus nanus var. nanus E. K. Balls 1950-5-9 15952 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  HSC95324  Mimulus primuloides var. primuloides Gordon Leppig, J. Cromwell 1997-7-27 604 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS4302  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mi s Westwood 1524 Comment
  UC1736253  Mimulus suksdorfii Dean W. Taylor 1992-5-7 12547 Lassen Eagle Lake Region, Pine Creek, on Forest Road 33N07 ca. 0.8 mile S of Byrgess Flat, 1767 Comment
  JEPS94562  Mitella pentandra Vernon Oswald and Lowell Ahart 1997-6-24 8615 Lassen slope along Forest Rd. 29N43 5.4 mi e Gold Run Rd. (n side of mtn., s of Susanville); Diamond Mtn. 1889 Comment
  CHSC13637  Monardella odoratissima M. S. Taylor 1974-7-3 275 Lassen Abundant along roadsides ca. 5 mi s of Eagle Lake and Gallatin Beach. 1524 Comment
  CHSC27650  Monardella odoratissima Cindy Prouty 1978-7-10 2 Lassen Colman L., several mi SE of Eagle L. 1962 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
  JEPS95748  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  LA54200  Monardella odoratissima subsp. glauca John Thomas Howell; 1934-6-10 11888 Lassen 12 mi. N of Susanville on rd to Horse Lake Comment
  UC1537598  Monardella odoratissima subsp. glauca Gordon H. True Jr. 1936-6-27 552 Lassen between Bull Flat and Hot Spring Mountain 1524 Comment
  CAS-BOT-BC213930  Monardella odoratissima subsp. pallida M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Mts. s of Eagle Lake Comment
  CAS-BOT-BC213932  Monardella odoratissima subsp. pallida A. M. Vollmer; L. Beane 1953-7-1 47 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC29873  Monardella odoratissima subsp. pallida Robin L. Ondricek 1978-6-27 74 Lassen 1977 Burn, .1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  CAS-BOT-BC222146  Monardella odoratissima subsp. pallida A. E. Anderson 1967-7-13 92 Lassen Eastern slope of Dean's Ridge, 0.6 mi. s of Five Corners on road to Gallatin Beach 1676 Comment
  OBI75862  Monardella odoratissima subsp. pallida Anthony Baniaga 2011-9-1 509 Lassen Lassen Natl Forest. W of Bailey Crk, along F.S. 10 Red Cinder quad. T29N R7E sec 3 SE of NE 1844 Comment
  RSA408689  Monardella odoratissima subsp. pallida Christopher Davidson 1974-7-24 2488 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  CHSC75490  Monolepis nuttalliana Vernon H. Oswald; Lowell Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  JEPS95874  Monolepis nuttalliana Vernon H. Oswald and L. Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030: T31N R15E Sect. 31, 4420 ft elevation, sagebrush scrub 1347 Comment
  JEPS94601  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1997-5-27 8498 Lassen on Forest Route 38N04 0.1 mi e Hwy. 139 ((between Hwy 139 near Willow Springs Guard Station and Coyote Flat), n of Susanville) 1546 Comment
  UC963894  Montia chamissoi Milo S. Baker 1952-5-23 12421 a Lassen e of Chester (Hwy 36) Comment
  POM312351  Montia chamissoi Malcolm A. Nobs, S. Galen Smith 1949-7-21 1064 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  CAS-BOT-BC444846  Montia fontana G. Schoolcraft 1995-5-16 2478 Lassen 2 mi. east of Bull Flat. 1615 Comment
  CAS-BOT-BC445064  Montia linearis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49216 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC60845  Montia linearis Vernon H. Oswald; Lowell Ahart 1993-6-28 5611 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
  JEPS94476  Montia linearis Vernon H. Oswald and Lowell Ahart 1997-5-27 8497 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling the road); Forest Route 38N04 1546 Comment
  CAS-BOT-BC262636  Muhlenbergia asperifolia C. S. Robinson 1928-9-18 120 Lassen Lassen National Forest. Hanna Estate, Morgan Springs. Around Sulphur Springs 1508 Comment
  CHSC44580  Muhlenbergia asperifolia Lowell Ahart; John Thomas Howell 1974-7-9 519 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  HSC10386  Muhlenbergia asperifolia M. T. Milligan 1964-8-6 201 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  POM172678  Muhlenbergia asperifolia Franklin P. Nutting s.n. Lassen Eagle Lake. Comment
  HSC95304  Muhlenbergia filiformis Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 680 Lassen Modo National Forest, Blue Lake Ranch. 1970 Comment
  RSA256304  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6237 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  UC163551  Muhlenbergia jonesii Milo S. Baker Lassen Eagle Lake Comment
  POM114433  Muhlenbergia richardsonis Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  RSA129676  Muhlenbergia richardsonis G. A. Fischer, Irwin Johnson 1933-7-12 F- 224 Lassen Lassen National Forest; Stringer Meadow. 1723 Comment
  RSA268996  Muhlenbergia richardsonis J. R. Reeder 1972-7-24 5806 Lassen Lassen National Park 1921 Comment
  UCD86950  Muhlenbergia richardsonis R. M. Love 1940-7-5 s.n. Lassen Madeline Plains. Comment
  RSA0011555  Muhlenbergia richardsonis R. F. Thorne, Larry E. DeBuhr 1975-8-22 46997 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  OBI76991  Myosurus apetalus var. borealis Anthony Baniaga 2011-6-10 325 Lassen Lassen/Modoc County. On the S side of Hwy 299, ca. 1.2 mi E of Lassen County rd 428. 1295 Comment
  CHSC66864  Myriophyllum sibiricum Vernon H. Oswald; Lowell Ahart 1996-9-10 8281 Lassen Mountain Meadows Reservoir SW of Westwood. Localized colony in shallow water along the railroad embankment at the northwest edge of the reservoir. 1539 Comment
  JEPS96085  Myriophyllum sibiricum Vernon H. Oswald and Lowell Ahart 1996-9-10 8281 Lassen s.w Westwood (Mt. Meadows Reservoir, shallow water along R.R. embankment n.w. edge of reservoir); Mt. Meadows Reservoir 1539 Comment
  CHSC48463  Nama densa var. densa Vernon Oswald 1986-5-28 2057 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139 1584 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
  SEINET5624608 Image available Nasturtium officinale L. E. Ray 1967-1 29 Lassen ca. 3.5 mi SE ELBS Upper Murrer Meadow 1524 Comment
  CHSC45356  Navarretia breweri Vernon Oswald 1986-5-28 2058 Lassen Hwy 139 between Eagle Lake and Adin, 32.0 mi n of Susanville. 1630 Comment
  UC1116681  Navarretia breweri Beecher Crampton 1961-6-20 5737 Lassen 6.5 mi n Bogard Ranger Station; Lassen National Forest, Little Harvey Valley 1676 Comment
  UC1184057  Navarretia breweri Jean Langenheim 1957-6-22 4365 Lassen Said Valley Reservoir, ne part of Lassen County Said Valley Reservoir Comment
  UC1537491  Navarretia breweri Gordon H. True Jr. 1938-7-9 910 Lassen near Termo 1219 Comment
  SEINET11268213  Navarretia breweri Vernon H. Oswald, Lowell Ahart 1993-6-28 5592 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.; 0 1719 Comment
  CHSC1241  Navarretia capillaris 1944-6-30 Lassen Grasshopper Valley, N. of Eagle Lake. 1615 Comment
  CHSC4268  Navarretia divaricata K. R. Stern 1967-6-24 2418 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC44331  Navarretia divaricata Lowell Ahart; John Thomas Howell 1974-7-9 541 Lassen Along Eagle Lake Road, on the south-west side of Eagle Lake. 1584 Comment
  CHSC117216  Navarretia intertexta Lowell Ahart; John Dittes 2016-6-7 21001 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS114395  Navarretia intertexta Lowell Ahart, John Dittes 2008-6-22 15028 Lassen about 120 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  HSC82196  Navarretia intertexta subsp. propinqua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6051 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS19816  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 Lassen 7 mi n Madeline (just e of U.S. Highway 395 (about 1 mi n of Sage Hen siding on S.P. Railroad)) 1676 Comment
  CHSC27670  Navarretia leptalea subsp. bicolor Robert A. Schlising 1978-7-9 3312 Lassen South of Eagle Lake. Area between Papoose Meadows and Eagle Lake Road. Comment
  UC909068  Navarretia leucocephala subsp. bakeri G. L. Stebbins Jr. 1949-8-6 4003 b Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  CHSC66253  Navarretia leucocephala subsp. minima Vernon H. Oswald; Lowell Ahart 1996-6-24 7847 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  HSC82246  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1980-7-6 5986 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1537488  Navarretia leucocephala subsp. minima Gordon H. True Jr. 1936-6-25 528 Lassen e of Harvey Ranger Station; Harvey Valley 1706 Comment
  UC909096  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 a Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  UC908650  Navarretia leucocephala subsp. minima Lincoln Constance 1946-7-3 Lassen Madeline Station Comment
  POM68111  Nemacladus sigmoideus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC93691  Nemophila parviflora var. austiniae Lowell Ahart; John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  RSA38472  Nemophila parviflora var. austiniae P. A. Munz 1947-5-18 11860 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  JEPS1932  Nemophila pedunculata L. Constance 1938-6-10 2323 Lassen 2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); McKenzie Meadows, sw of Fredonyer Pass 1524 Comment
  UC604678  Nemophila pedunculata Farris Farris 1935-5-20 Lassen five mi sw Susanville; sw of Susanville 1341 Comment
  UC1567448  Neoholmgrenia andina G. Schoolcraft 1989-6-7 1907 Lassen ne lower slopes Shaffer Mtn. 1524 Comment
  UC1191769  Nicotiana acuminata var. multiflora Verne Grant and Irving Schneider 1947-9-7 8399 Lassen 0.5 mi w Litchfield (Susan River by Highway 395 at Bridge 7-34); Susan River Comment
  CHSC55804  Nicotiana attenuata Vernon H. Oswald 1991-9-23 4875 Lassen Lassen Volcanic Park. Butte Lake in the northeast corner of the park. Collected on the strand of the lake at its outlet; along the east side of the lake. 1841 Comment
  UC26151  Nicotiana attenuata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  SEINET10832656  Nicotiana attenuata Mary Susan Taylor 1974-1 Taylor 270 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 Comment
  RSA0009448  Nuphar lutea subsp. polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC7772  Oenothera Beverley J. Wise 1969-5-23 69 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  JEPS124825 Image available Oenothera deltoides C. Meek 1969-7-8 68 Lassen Along Hi #395, 1 mi south of intersection to Herlong Army Depot, 8 mi. south of Milford. Comment
  JEPS124836 Image available Oenothera deltoides Laurie Hooker 1965-7-12 106 Lassen 2.6 miles past Milford on Highway 395. Comment
  CHSC12954  Oenothera deltoides subsp. piperi K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5803 Lassen Field on w side of Janesville Rd., ca. 0.1 mi w of turnoff from Hwy. 395, ca. 11 mi se of Susanville. Comment
  JEPS29737  Oenothera deltoides subsp. piperi Rimo Bacigalupi and L. R. Heckard 1962-5-28 8492 Lassen along US Hwy 395 10 mi s Milford 1219 Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 Comment
  UC174846  Oenothera elata subsp. hirsutissima T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  SD64323  Oenothera tanacetifolia D. F. Howe 1966-8-25 Lassen 4.5 miles south of Alturas on Hwy #395. 1676 Comment
  CHSC5198  Oreostemma alpigenum var. andersonii M. West 1955-7-10 Lassen Eagle Lake. Stephen's Ranch. 1905 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
  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
  CHSC10945  Orobanche corymbosa K. D. Cox 1971-7-5 144 Lassen Approx. 1/4 mi. NW of main campus L.F.S. 1554 Comment
  JEPS22322  Orobanche uniflora subsp. occidentalis Peter H. Raven and Otto T. Solbrig 1958-6-16 13251 Lassen 4.5 miles east of Westwood on State Highway 36. Comment
  SEINET10549655  Orthocarpus copelandii Mary Susan Taylor 1974-1 Taylor 307 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  UC1484779  Orthocarpus cuspidatus subsp. cryptanthus Noel H. Holmgren and Patricia K. Holmgren 1978-6-12 8933 Lassen 17 km (10.5 mi) airline distance ese Ravendale (s of Observation Peak, upper Smoke Creek); Upper Smoke Creek, just s of Observation Peak 1770 Comment
  RSA715624  Orthocarpus hispidus L. Ahart, John Dittes 2005-6-1 11902 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
  POM82978  Osmorhiza berteroi Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC125352  Oxytheca dendroidea subsp. dendroidea T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UC30052  Oxytheca perfoliata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC10388  Paeonia brownii Margaret Williams; Steven Williams 1974-7-26 74- 2 -14 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  CAS-BOT-BC10387  Paeonia brownii J. T. Howell; Gordon H. True; Margaret Williams 1973-5-12 49158 Lassen In cemetary, Janesville 1295 Comment
  RSA59891  Paeonia brownii E. K. Balls 1950-5-19 14774 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline 1585 Comment
  CHSC13509  Panicum J. Pitts 1972-6-23 271 Lassen 50 yds. n of Eagle Lake Biology Station. 1524 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
  NY1092251  Panicum capillare A. Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel. 1220 Comment
  POM115996  Panicum capillare Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  RSA126977  Panicum capillare H. S. Yates 1936-8-11 6073 Lassen Baxter Creek 1280 Comment
  UC1131606  Panicum capillare H. S. Yates 1936-8-11 6073 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  UCD89524  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen Susanville. 1295 Comment
  UCD89807  Panicum capillare subsp. hillmanii John Thomas Howell 1973-7-10 49808 Lassen Doyle. Comment
  CDA5733  Pectocarya penicillata L. Ahart, J. Dittes 2005-6-1 11907 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  JEPS107455  Pectocarya penicillata Lowell Ahart, John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  RSA294197  Pectocarya penicillata A. Tiehm 1980-5-29 5753 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  RSA715628  Pectocarya penicillata John Dittes 2005-6-1 11907 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. 1460 Comment
  SBBG68673  Pedicularis attollens H. and M. Dearing 1938-7-1 2238 Lassen 12 mi W of Susanville Comment
  CHSC4924  Pedicularis semibarbata L. G. Bennett 1967-7-14 142 Lassen Immediate vicinity of Silver Lake. 1975 Comment
  UC1125741  Pedicularis semibarbata A. Simontacchi 1940-5-27 727 Lassen 9.3 mi nw of Crater Lake; Lassen National Forest 1752 Comment
  RSA121814  Pedicularis semibarbata G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 272 Lassen Lassen Forest. 1738 Comment
  SD6613  Pedicularis semibarbata Mrs. R. M. Austin 1880-1 Lassen Dutch Hill Comment
  RSA715656  Penstemon deustus subsp. heterander L. Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  RSA177476  Penstemon deustus subsp. sudans R. M. Straw 1962-6-29 2198 Lassen 10 miles W of Susanville on Cal 36. 1580 Comment
  CHSC4441  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-30 2451 Lassen West Central side of Eagle Lake. 1554 Comment
  HSC81803  Penstemon deustus var. pedicellatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6035 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  JEPS28681  Penstemon deustus var. pedicellatus George W. Gillett 1957-7-26 908 Lassen e shore Butte Lake Lassen Volcanic National Park, e shore Butte Lake 1859 Comment
  NY591825  Penstemon deustus var. pedicellatus F. W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1097.3 Comment
  POM44652  Penstemon gracilentus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  SEINET5328215 Image available Penstemon gracilentus G. Schoolcraft 1994-7-7 2370 Lassen about 1 mi W of Boot Lake 235 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
  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
  NY627268  Penstemon neotericus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  UC27480  Penstemon newberryi var. newberryi Milo S. Baker 1891-6 Lassen Silver Lake Comment
  CHSC4912  Penstemon roezlii A. E. Anderson 1967-6-24 27 Lassen Abundant in soil on roadside leading to Murrer's Meadow, 1 mi. east of junction of road to Eagle Lake Biological Station. 1554 Comment
  NY650102  Penstemon roezlii J. T. Howell 1973-8-1 50205 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164.1 Comment
  SBBG28920  Penstemon roezlii D. D. Keck 1954-7-23 954 Lassen 12 mi W of Susanville 1676 Comment
  NY650106  Penstemon roezlii D. W. McNeal 1983-6-5 2837 Lassen On a road bank beside Highway #395, 9.2 miles north of the Plumas Co. line. Comment
  SEINET5329596 Image available Penstemon roezlii J. T. Howell, Gordon H. True; Wayne Dakan 1974-7-30 50689 Lassen S and SE of Diamond Mt., 2286 Comment
  UCD124154  Penstemon roezlii Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Balls Canyon, south of Secret Valley. Comment
  JEPS128128  Penstemon rydbergii Catherine Bauer with Ellen Bauer Benson 2017-8-18 25 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC239510  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 4 miles east of Westwood 1432 Comment
  CHSC12483  Penstemon rydbergii var. oreocharis Carol Weld 1969-6-20 15 Lassen Dean's Meadow. 1950 Comment
  CHSC4791  Penstemon rydbergii var. oreocharis R. Carter 1967-7-7 582 Lassen Collected at W end of reservoir. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  JEPS27628  Penstemon rydbergii var. oreocharis Frances D. Payne 1929-7-12 91 Lassen eastern slope of the southern end of the Warner Range e slope of s end of Warner Range, Upper Silver Creek (Upper Silver Creek) 2286 Comment
  NY651252  Penstemon rydbergii var. oreocharis G. Schoolcraft 1985-6-12 1418 Lassen Edge of Grasshopper Valley, at south end. 1615.4 Comment
  NY651292  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen 1 mile south of Westwood 1524.0 Comment
  CHSC12458  Penstemon speciosus Robert W. Severin 1969-6-20 2 Lassen 4 miles s of E. L. B. S. in Dean's Meadow. 1950 Comment
  CHSC4438  Penstemon speciosus K. R. Stern 1967-6-30 2449 Lassen West Central side of Eagle Lake. 1554 Comment
  NY660832  Penstemon speciosus F. W. Pennell 1940-6-9 25753 Lassen Route 395, 5 miles north of Madeline 1676.4 Comment
  NY661031  Penstemon speciosus J. T. Howell 1934-6-19 11882 Lassen 12 miles north of Susanville on road to Horse Lake Comment
  NY660820  Penstemon speciosus H. D. D. Ripley 1943-6-13 5672 Lassen South of Constantia 1463.0 Comment
  CAS-BOT-BC243406  Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen NE of Shaffer Mtn. 1356 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
  OBI75899  Penstemon sudans Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 478 Lassen Lassen Natl Forst. Hwy 36, ca. 1/4 mi E of "Fredonyer Pass Winter OHV Parking Lot" Fredonyer Pass quad T29N R10E sec 2 NW of SW 1950 Comment
  UC1012466  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36 w Susanville; w of Susanville 1371 Comment
  UC1583939  Penstemon sudans G. Schoolcraft 1990-8-6 2121 Lassen along Bizz Johnson Trail w Susanville; along Bizz Johnson Trail w of Susanville 1310 Comment
  SEINET5323639 Image available Penstemon sudans J. T. Howell, Gordon H. True 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1585 Comment
  OBI75898  Penstemon venustus Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 479 Lassen Lassen Natl Forest. Along Hwy 36. Fredonyer Pass quad. T29N R10E sec 2 sW of NW 1701 Comment
  OBI82794  Penstemon venustus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3935 Lassen E of Freydonyer Pass. 6.2 rd mi west on Hwy 36 after jct with Hwy 44. S side of rd. Ca 11 air mi wsw of Susanville.; 0 1659 Comment
  UC2027331  Penstemon venustus Anthony Baniaga and R. Bomberger 2011-7-28 479 Lassen Lassen National Forest. Along Highway 36. Fredonyer Pass quadrangle Comment
  RSA519197  Penstemon venustus Karl Vincent 1987-8-5 4500 Lassen Sierra Nevada, SE side of Fredonyer Butte; about 30 plants, some up to 40 inflorescences, on steep gravelly roadbank along N side of Ca 36 ca. 11.5 mi WSW of Susanville, E of Fredonyer Pass 1585 Comment
  HSC100163  Peraphyllum ramosissimum J. P. Smith, & J. O. Sawyer 2011-8-14 13378 Lassen Along service road to transmitter facility, 3.2 mi. W of Hwy. 395. Comment
  NY850110  Peraphyllum ramosissimum G. Schoolcraft 1984-6-11 1207 Lassen Hills east of Bull Flat 1585 Comment
  CHSC91292  Perideridia bolanderi Lowell Ahart; John Dittes 2005-6-1 11916 Lassen Along a small wash, on the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  POM82581  Perideridia bolanderi subsp. bolanderi Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UCD127832  Perideridia bolanderi subsp. bolanderi R. C. Bechtel 1954-7-12 s.n. Lassen Norvell. Comment
  SEINET3088961 Image available Peritoma platycarpa N. H. Holmgren, Patricia K. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  SEINET5845147  Peritoma platycarpa J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  CAS-BOT-BC413480  Persicaria amphibia L. S. Smith 1918-7-22 1006 Lassen Modoc National Forest. Blue Lake 1874 Comment
  CAS-BOT-BC413522  Persicaria amphibia George W. Gillett 1957-7-26 921 Lassen Lassen Volcanic National Park. Butte Lake 1844 Comment
  CHSC58505  Persicaria amphibia Vernon H. Oswald; Lowell Ahart 1992-7-9 5079 Lassen Lassen Volcanic National Park. S side of Horseshoe Lake. 1994 Comment
  CHSC7682  Phacelia adenophora Beverley J. Wise 1969-5-3 49 Lassen 6.1 mi. junction with Hwy 395 on Las. Co. Rd. 338. 1615 Comment
  JEPS25529  Phacelia adenophora Rimo Bacigalupi with Lincoln Constance 1959-6-16 7143 Lassen US Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside road) 1341 Comment
  OBI48096  Phacelia adenophora Rhonda Riggins 1989-4-27 1643 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  RSA17669  Phacelia adenophora Elmer I. Applegate 1934-5-4 8912 Lassen South end of Secret Valley Comment
  RSA38632  Phacelia adenophora P. A. Munz 1947-5-19 11872 Lassen 19 miles south of Ravendale. 1341 Comment
  RSA722579  Phacelia adenophora R. R. Halse 1975-6-20 1198 Lassen Madeline Plains, along Lassen County Road 508, 1.5 miles east of Termo. 1590 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
  UCR244050  Phacelia bicolor var. bicolor Jim Andre 1993-6-1 19720 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  HSC30187  Phacelia hastata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19262 Lassen Harvey Valley near Cone Springs Comment
  CHSC29888  Phacelia hastata subsp. hastata Robin L. Ondricek 1978-8-9 121 Lassen 0.1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  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
  CHSC93673  Phacelia heterophylla subsp. virgata Lowell Ahart; John Dittes 2005-6-2 11983 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  UC773947  Phacelia heterophylla subsp. virgata L. R. Short and Wm. Gansberg 1936-7-9 S- 478 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  CHSC23550  Phacelia humilis W. O. Baum 1971-6-28 23 Lassen E slope of Gallatin Peak. 1981 Comment
  CHSC28594  Phacelia humilis M. S. Taylor 1974-7-9 266 Lassen Scattered ca 3 ft e side of Whitehead Rd, ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. Comment
  CHSC5262  Phacelia humilis 1944-7-9 Lassen Dow Butte, Eagle Lake. 2042 Comment
  JEPS118501  Phacelia humilis A. Holmen 2011-8-12 CA 320 -92 Lassen US Hwy 395 South to Termo. Turn East onto Lassen Co. Rd 508 (Juniper Ridge Rd). Continue approximately 11 miles to Cold Springs Rd and head north for 3 miles. Turn and travel about 1 mile. Collection site is along road. Comment
  NY1057847  Phacelia humilis N. H. Holmgren 1978-6-11 8908 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  SBBG15797  Phacelia humilis H. and M. Dearing 1938-6-30 2234 Lassen 20 mi N of Susanville [Hwy 44] Comment
  SEINET12765228  Phacelia humilis Vernon H. Oswald, Lowell Ahart 1997-6-24 8620 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a impoundment on Forest Rd. 29N43, ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary.; 0 2036 Comment
  RSA128301  Phacelia humilis var. humilis Peter H. Raven, Otto T. Solbrig 1958-6-16 13246 Lassen Four and a half miles east of Westwood on State Highway 36. Comment
  UC735052  Phacelia inundata Lincoln Constance 1946-7-3 3097 Lassen Spauldings Eagle Lake (w edge of lake) 1706 Comment
  CHSC12454  Phacelia linearis Robert W. Severin 1969-6-27 38 Lassen E.L.B.S., 250 ft. n of Vesta Holt Hall. Comment
  CHSC5051  Phacelia linearis L. B. Barlow 1967-6-23 3 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC726  Phacelia linearis F. Hughes 1935-6-2 Lassen Near Susanville. 1524 Comment
  CHSC93235  Phacelia linearis John Dittes; Scott Chamberlain 2004-6-28 1009 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
  SBBG64994  Phacelia linearis S. W. Hutchinson -Jun-1925 395 Lassen Eagle Lake 1554 Comment
  SD6842  Phacelia linearis Mrs. R. M. Austin 1879-1 Lassen Eagle Lake Comment
  SEINET5519037  Phacelia linearis J. Young 1982-6-9 s.n. Lassen Adin, M. Meyer's Ranch 1372 Comment
  NY1056437  Phacelia lutea var. glandulifera A. A. Heller 1938-6-23 15210 Lassen U.S. Highway #395, about midway between Mapes and Secret Valley 1372 Comment
  CHSC111256  Phacelia mutabilis L. P. Janeway; B. Castro 2012-7-3 10939 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
  JEPS4041  Phacelia mutabilis Frances D. Payne 1929-7-12 85 Lassen ridge above Lost Lake; Warner Mountains 2438 Comment
  CAS-BOT-BC141448  Phacelia ramosissima var. eremophila John Thomas Howell 1934-6-10 11873 Lassen Janesville Comment
  OBI82828  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  CHSC27604  Phacelia ramosissima var. ramosissima N. E. Heiken 1978-7-27 51 Lassen SE side of Eagle Lake. 1554 Comment
  JEPS97248  Phacelia thermalis Vernon H. Oswald and Lowell Ahart 1995-6-19 6902 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi E of Highway 395. Comment
  UCD89650  Phleum pratense L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  UC106950  Phlox diffusa T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS118284  Phlox douglasii Lowell Ahart, John Dittes 2011-6-20 17506 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
  UC1537492  Phlox douglasii subsp. rigida Gordon H. True Jr. 1936-6-27 560 Lassen Top of Hot Spring Mountain Hot Spring Mountain 1828 Comment
  JEPS71121  Phlox gracilis Dr. R. H. Loughridge 1912-1 Lassen Madeline Plains Comment
  RSA304681  Phlox hoodii var. canescens Jim Shevock 1971-4-9 944 Lassen Hwy 299, E of Dana. 1067 Comment
  UC1567441  Phlox longifolia G. Schoolcraft 1989-5-16 1878 Lassen w of Rice Canyon Rd. (at base of Antelope Mtn.); Antelope Mtn. 1280 Comment
  UC1924579  Phlox speciosa Debra Valov 2006-5-29 2006031 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1282 Comment
  CHSC91202  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2005-6-2 11928 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  RSA59557  Phlox speciosa subsp. occidentalis E. K. Balls 1950-5-22 14826 Lassen 10.8 miles SE of Susanville, 1.1 miles SE of Buntingville, W of Honey Lake 1280 Comment
  CHSC26429  Phlox stansburyi Gary McGrath 1977-4-24 2 Lassen Ca. 20 m w of Hwy 139, 3 km n of Susanville. 1310 Comment
  CHSC35953  Phlox stansburyi M. S. Taylor 1982-5-29 4572 Lassen Ca. 500 yds ne of the jct of Hwys 70 and 395 at Hallululia Jct, ca 23 mi n of Reno. Comment
  UC106966  Phlox stansburyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CHSC76837  Phoradendron densum L. P. Janeway; B. Castro, Loren Gehrung 1999-10-10 6595 A Lassen High Cascade Range. Near Eiler Creek between Fraener Peak and Horse Heaven Buttes; at Cypress Trailhead into Thousand Lakes Wilderness Area. 1639 Comment
  CDA19731  Phyllodoce breweri J. Chattin August 1947 s.n. Lassen Northern California; Silver Lake. 0 Comment
  CHSC23508  Pinus jeffreyi Wayne O. Baum 1971-7-16 71 -74 Lassen E. slope of Gallatin Peak. 2072 Comment
  SEINET12429009  Pinus monophylla var. californiarum D. Charlet, P. Herman 1995-3-6 2192 Lassen Diamond Mountains, 10 kn ESE of Adams Peak; W side Long Valley, NW of Petersen Mtn. on little ridgetop visible from US 395, below railroad above windmill; 1408 Comment
  CHSC6218  Pinus ponderosa P. Balch 1955-6-26 Lassen Stafford's Lodge, Eagle Lake. 1569 Comment
  CHSC84893  Pinus ponderosa L. P. Janeway; B. Castro 2003-10-5 8005 Lassen High Cascade Range. Cone Lake and trailhead parking area (trail 1.3 km southwest into Caribou Wilderness Area). 2055 Comment
  NY951529  Pinus ponderosa var. ponderosa D. H. Goldman 2004-11-6 2941 Lassen Along the N side of Forest Road 32N08, just N of Pine Creel Valley and about 1.8 miles E of the intersection with Rt. 44. Crater Lake Mountain, Lassen National Forest 1725 Comment
  CDA601  Pinus washoensis Gordon Leppig, Sylvia Leppig and Juli & Kai Neander 1998-8-18 1065 Lassen Modoc National Forest, Blue Lake Campground Comment
  CHSC29914  Plagiobothrys cognatus Robin L. Ondricek 1978-7-5 85 Lassen Grassy area bordering ne edge of Mahogany Lake. 2057 Comment
  CHSC117547  Plagiobothrys cusickii Lowell Ahart; John Dittes 2016-7-13 21114 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the northern slope of Big Valley. 1289 Comment
  JEPS114769  Plagiobothrys cusickii Lowell Ahart, John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SJSU8035  Plagiobothrys cusickii J. W. Tilden 1960-6-27 1518 Lassen 5 mi E of Westwood by Moonlight Rd 1524 Comment
  CHSC60334  Plagiobothrys hispidulus Mary Ann Showers 1992-6-12 2530 a Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest Comment
  CHSC64768  Plagiobothrys leptocladus Vernon H. Oswald 1995-5-24 6780 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  JEPS121266  Plagiobothrys mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA128304  Plagiobothrys mollis P. H. Raven, Otto T. Solbrig 1958-6-17 13258 Lassen Along U.S. Hwy 395, 7.1 miles W of Standish. Comment
  POM71640  Plagiobothrys scouleri var. hispidulus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC112445  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18771 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
  CHSC112751  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2013-7-22 18873 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
  UC1567370  Plagiobothrys stipitatus var. micranthus G. Schoolcraft 1989-7-24 1991 Lassen Said Valley Reservoir Said Valley 1630 Comment
  UC496322  Plagiobothrys tenellus Doris Keldale Gillespie 1930-5-12 9329 Lassen 2 mi s Susanville (on road to Alturas) Comment
  UC1037280  Platanthera leucostachys Leo Whitney 1934-7-25 1740 Lassen ca 7 to 8 mi sw Eagle Lake (Bridge Creek Camp, near Bridge Creek); Lassen National forest, Bridge Creek 1737 Comment
  UC726205  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen 2 mi e Westwood 1524 Comment
  UC845587  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen about 1 mi e Westwood 1524 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
  CHSC4942  Plectritis macrocera W. Lessig 1967-5-23 16 Lassen Coll. ca. 200 yds. ne of Eagle Lake Biology Station. 1524 Comment
  CHSC4992  Plectritis macrocera L. E. Ray 1967-6-23 48 Lassen Collected ca. 200 yds, ne of ELBS. 1524 Comment
  UC768477  Pleiacanthus spinosus Robert F. Hoover 1940-9-28 4630 Lassen Susanville Comment
  RSA484154  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
  SEINET10565425  Poa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17785 Lassen 6 mi N of Hallelujah Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  UC1136987  Poa X fibrata George A. Fischer and Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat; Lassen Nat'l Forest 1737 Comment
  CAS-BOT-BC254944  Poa bulbosa John Thomas Howell 1975-7-23 51395 Lassen Susanville 1295 Comment
  RSA115224  Poa compressa Beecher Crampton 1956-7-17 3736 Lassen Ca. 2.5 miles north of Emigrant Gap. 1372 Comment
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Apr 28 2013
  JEPS107793  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes 2005-6-2 11927 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  CHSC61599  Poa pratensis Arthur C. Barrett 1915-6-3 18 Lassen Plumas National Forest. Laufman Ranger Station. Meadow. 1463 Comment
  UCD91978  Poa pratensis L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  SEINET10867718  Poa pratensis Katherine L. Morris 1973-5-25 Morris 243 Lassen Collected 7.6 mi NW of Jct of Hwy 36 & 44 on Hwy 44, in an area of yellow pine and incense cedar; very moist area. Comment
  UC1024691  Poa pratensis subsp. pratensis Leo Whitney 1933-8-2 2154 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen Nat'l Forest 1920 Comment
  JEPS127715  Poa secunda Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -170 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  RSA647530  Poa secunda Marion P. Harthill 1972-6-17 820 Lassen Madeline. 1677 Comment
  UCD90323  Poa secunda A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3367 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  CAS-BOT-BC236258  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 miles E of Westwood on road to Fredonyer Pass 1584 Comment
  CAS-BOT-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
  CAS-BOT-BC247053  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  CHSC77270  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2350 Lassen About 1.5 miles NE of Red Rock Lake. 2042 Comment
  JEPS70648  Poa secunda subsp. juncifolia Dr. Longbridge 1912-1 Lassen Amadee Comment
  UC1143013  Poa secunda subsp. juncifolia August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mt; Lassen Nat'l Forest 1706 Comment
  UCD18953  Poa secunda subsp. juncifolia Jack N. Reppert 1965-7-12 28 Lassen Lassen National Forest, Harvey Valley Allot. (HV 17-11). 1682 Comment
  UCD92377  Poa secunda subsp. juncifolia B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD92381  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen Constantia. Comment
  JEPS127637  Poa secunda subsp. nevadensis Alejandro Brambila, Michael Dolan 2016-6-27 CA 320 -151 Lassen Northwest of Madeline Plains up Anderson Canyon to Spooner Reservoir. 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
  HSC10738  Poa secunda subsp. secunda R. S. White 1965-5-15 74 Lassen 10 mi. W of Susanville on Hwy. 36 Comment
  SEINET7294129 Image available Poa secunda subsp. secunda John Thomas Howell, Gordon H. True; Margaret Williams 1973-1 49197 Lassen In open yellow pine forest, Elysian Valley northwest of Janesville. 1326 Comment
  UC1024681  Poa secunda subsp. secunda Leo Whitney 1934-7-10 2165 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen Nat'l Forest, Harvey Valley 1737 Comment
  UC1024836  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3220 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC506999  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 206 Lassen Grass Valley; Lassen Nat'l Forest 1699 Comment
  UC70958  Poa secunda subsp. secunda M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  UC1143038  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Nat'l Forest 1859 Comment
  CAS-BOT-BC244269  Podagrostis humilis George W. Gillett 1957-7-28 925 a Lassen Lassen Volcanic National Park. Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake, 100 yards above trail junction 1859 Comment
  UC1609361  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5669 Lassen ca. 5.4 mi. (air) n.w. Poison Lake (Halls Flat Rd. (33N18), 1.4 mi. s.-s.w. of Pittville Rd. (Lassen 111, 36N01), w. side of rd.) 1694 Comment
  UC449772  Polemonium occidentale Franklin P. Nutting 1894-7-28 Lassen Bridge Creek Bridge Creek (Northern California) Comment
  SEINET10838602  Polyctenium fremontii Arnold J. Tiehm 1988-6-2 Tiehm 11703 Lassen 6.6 mi. N. Of the wendel rd on hwy 395 from susanville to alturas, mud flats along the hwy, t30n, r15e, sec 15. Plants growing with artemesia ant the edge of silty flats which were inundated earlier in the year. Petals white to pink. Comment
  NY182307  Polyctenium fremontii var. confertum G. Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1609.3 Comment
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CAS-BOT-BC167848  Polygala subspinosa H. D. Ripley; R. C. Barneby 1943-6-15 5760 Lassen E. of Viewland 1310 Comment
  CAS-BOT-BC167849  Polygala subspinosa Junea Kelly 1937-6-1 s.n. Lassen South of Secret Valley on road from Susanville to Alturas Comment
  CHSC64797  Polygala subspinosa Vernon H. Oswald 1995-5-31 6815 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CAS-BOT-BC419771  Polygonum argyrocoleon Alice Eastwood 1912-8-22 1795 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  CHSC66255  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1996-6-24 7864 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally common in open woods on the W side of the meadow ca. 0.4 mi S of the cabins. 1633 Comment
  UC1567355  Polygonum douglasii subsp. majus G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC 1554 Comment
  CHSC84438  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  JEPS51271  Polygonum douglasii subsp. spergulariiforme Brown and Wieslander 1922-7-20 88 Lassen Martin Sprs. Eagle Lake Comment
  UC1143031  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experimental Range Lassen National Forest 1767 Comment
  RSA122844  Polygonum kelloggii L. R. Short, Wm. Gansberg 1936-6-8 s 390 Lassen Burgess Spring, Exp Range. 1744 Comment
  CHSC59096  Polygonum minimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5178 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Locally abundant in an opening on the brushy edge of the meadow. 1950 Comment
  HSC31363  Polygonum parryi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19196 Lassen Harvey Valley near Cone Springs Comment
  UC1603211  Polygonum polygaloides J. Guardino 1993-6-8 261 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 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
  JEPS19797  Polygonum polygaloides subsp. confertiflorum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6003 Lassen 3.1 mi s of Madeline (along U.S. Highway 395, Madeline Plains); Madeline Plains, U.S. Highway 395 1615 Comment
  UC1609321  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  CAS-BOT-BC419910  Polygonum polygaloides subsp. kelloggii George W. Gillett 1957-7-28 939 Lassen Lassen Volcanic National Park. Widow Lake. 2072 Comment
  CHSC4773  Polygonum polygaloides subsp. kelloggii R. Carter 1967-6-27 559 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  CHSC6231  Polygonum polygaloides subsp. kelloggii R. Gein 1946-6-12 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  UC1136922  Polygonum sawatchense subsp. sawatchense George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 Comment
  RSA161483  Polygonum shastense Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  RSA122848  Polygonum spergulariiforme L. R. Short 1936-9-30 s 501 Lassen Burgess Spring, Exp Range. 1768 Comment
  CAS-BOT-BC420975  Polygonum spergulariiforme Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pitville [Pittville] 1219 Comment
  CHSC29892  Porterella carnosula Robin L. Ondricek 1978-7-5 87 Lassen The ne edge of Mahogany Lake between the water and the trees. 2057 Comment
  JEPS103627  Porterella carnosula Lisa Schultheis 1995-6-27 224 -95 Lassen large vernal pool at corner of 33N56Y and 33NO6. W of Champs Flat Comment
  CHSC118487  Porterella carnosula Don Lepley 2015-5-29 Lassen Lassen National Forest. Eagle Lake Ranger District. Southeast corner of Pine Creek Valley, about seven air miles east of Bogard Rest Area. 1716 Comment
  SEINET10460819  Porterella carnosula G. Ledyard Stebbins 1949-8-6 Stebbins 4002 Lassen Edge of Feather Lake, between Susanville and McArthur. Mud flats 1676 Comment
  SEINET5334401  Portulaca oleracea Unknown 1942-8-31 s.n. Lassen Honey Lake Valley. 1067 Comment
  CAS-BOT-BC452093  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  UC1609364  Potamogeton diversifolius Vernon H. Oswald and Lowell Ahart 1993-7-8 5666 Lassen ne edge of Poison Lake (2.4 mi n of Hwy 44, Pittville Road (Lassen 111, 36N01)) 1705 Comment
  CHSC100538  Potamogeton foliosus Daniel B. Marcum 2007-7-25 Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 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
  UC1100045  Potamogeton foliosus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1477 Lassen 1 mi n of Doyle (banks of Long Creek); Honey Lake Valley Comment
  CHSC66284  Potamogeton gramineus Vernon H. Oswald; Lowell Ahart 1996-6-24 7876 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  UC1099822  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-7-20 1044 Lassen Bieber, along highway 299 Bieber Comment
  UC60851  Potamogeton striatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3357 Lassen marsh near Amedee; Honey Lake Valley Comment
  CHSC65370  Potamogeton zosteriformis Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7220 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 Comment
  CHSC89722  Potentilla glandulosa subsp. glandulosa L. P. Janeway 2004-6-26 8154 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
  CHSC5044  Potentilla glandulosa subsp. nevadensis L. B. Barlow 1967-7-4 87 Lassen 5 mi s of Eagle Lake Biological Station on Gallatin Beach Road. 1737 Comment
  CHSC12478  Potentilla gracilis var. fastigiata Carol Weld 1969-6-26 35 Lassen Papoose Meadow. 1615 Comment
  SEINET6637685  Potentilla gracilis var. fastigiata C. G. Gulling 1905-1 1529 Lassen Big Meadows Comment
  CAS-BOT-BC158514  Potentilla millefolia G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  UCR67033  Potentilla rivalis George K. Helmkamp 1990-10-4 M- 3 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CHSC117197  Poterium sanguisorba Lowell Ahart; John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  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
  RSA0028244  Prunus andersonii John F. Emmel 1994-7-18 1335 Lassen Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle. 1305 Comment
  UC1128502  Prunus emarginata A. Simontacchi 1940-6-4 799 Lassen 7.1 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1836 Comment
  SEINET3850947  Prunus virginiana Dwayne Estes 2004-1 06028 Lassen SE side of Horse Lake along E roadside 1554 Comment
  CAS-BOT-BC383104  Prunus virginiana var. demissa Andrew Townesmith; Karen M. Meyer 2007-7-20 835 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 1429 Comment
  CHSC6259  Prunus virginiana var. demissa R. Gein 1946-6-11 Lassen Eagle Lake. On Pine Creek. 1580 Comment
  CHSC91204  Prunus virginiana var. demissa Lowell Ahart; John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  JEPS107870  Prunus virginiana var. demissa Lowell Ahart, John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC1128504  Prunus virginiana var. demissa A. Simontacchi 1940-6-4 800 Lassen 7.1 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1836 Comment
  UC773874  Prunus virginiana var. demissa L. R. Short, Wm. Gansberg 1936-7-3 S 466 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1847 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
  RSA647559  Pseudoroegneria spicata subsp. spicata Marion P. Harthill 1972-6-17 809 Lassen Ravendale 1768 Comment
  CHSC11770  Pseudostellaria jamesiana Wayne O. Baum 1971-7-6 71 -6 Lassen E. slope of Gallatin Peak. 1950 Comment
  UC120048  Pseudostellaria jamesiana unknown 1892-7-2 Lassen Susanville Comment
  RSA0011562  Psilocarphus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46990 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC112453  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18756 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
  CHSC117522  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes 2016-7-13 21110 Lassen Strand of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miless(air) southwest of Adin, hills at the southern slope of Big Valley. 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
  JEPS127273  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2016-7-13 21110 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC99273  Psilocarphus tenellus var. tenellus Lowell Ahart; John Dittes 2008-6-22 15029 Lassen About 120 yards west of the road levee, on the bottom of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  NY702519  Psoralidium lanceolatum J. T. Howell 1934-6-10 11860 Lassen Doyle Comment
  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
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  CAS-BOT-BC453500  Pterospora andromedea John Thomas Howell; Gordon H. True 1973-7-31 50024 Lassen Sierra Nevada, on road from Janesville to Thompso Peak, Diamond Range 1737 Comment
  CHSC77267  Puccinellia distans G. Schoolcraft 1993-6-1 2270 Lassen Coyote Spring. 1463 Comment
  CDA32666  Puccinellia lemmonii Gary Schoolcraft 2000-6-19 2906 Lassen Flat southeast of Ravendale BLM Fire Station. 0 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
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  CAS-BOT-BC147821  Purshia tridentata var. tridentata Alice Eastwood; John Thomas Howell 1940-6-16 8341 Lassen Janesville Comment
  CAS-BOT-BC147824  Purshia tridentata var. tridentata M. S. Taylor 1982-5-7 4431 Lassen Reno Junction on Hwy 70, just e of Beckwourth Pass 1524 Comment
  JEPS117495  Purshia tridentata var. tridentata Lowell Ahart, John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  RSA122150  Purshia tridentata var. tridentata G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 212 Lassen Lassen Forest. 1723 Comment
  RSA86630  Purshia tridentata var. tridentata F. W. Peirson 1932-7-20 10355 Lassen 20 miles SE of Susanville. Comment
  UC1128550  Purshia tridentata var. tridentata K. Bradshaw 1939-5-27 234 Lassen Black Mountain Experimental Forest; Lassen National Forest, Halls Flat Quad. 1752 Comment
  POM90536  Purshia tridentata var. tridentata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC462881  Pyrola asarifolia George W. Gillett 1957-7-24 900 Lassen Lassen Volcanic National Park: Cameron Meadow 1950 Comment
  CHSC59803  Pyrola dentata Mary Meyer 1980-7-31 Lassen Forest adjacent to road. 1828 Comment
  CAS-BOT-BC462755  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  RSA0084313  Pyrola picta Diana D. Jolles, Erik M. Beaston 2011-7-5 442 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
  UC477495  Pyrola picta A. G. Brenneis 1928-7-3 11 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  CAS-BOT-BC362156  Pyrrocoma apargioides Margaret Williams 1974-7-27 74 -L-65 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC1561924  Pyrrocoma hirta var. hirta Barbara Ertter 1987-7-25 7312 a Lassen Pine Creek Valley at junction of Bridge Creek Springs Road ca 22 airmiles nw Susanville; Pine Creek Valley 1737 Comment
  CHSC58834  Pyrrocoma hirta var. lanulosa Vernon H. Oswald; Lowell Ahart 1992-7-16 5129 Lassen Feather Lake on the S side of Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), ca. 0.4 mi E of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02), between Old Station and Susanville. On the margin of the lake. 1749 Comment
  UC1143034  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1783 Comment
  SEINET13710357  Pyrrocoma lanceolata Lowell William Ahart, Lowell William Ahart 1999-1 8231 Lassen Willow Creek Wildlife Area, Hwy. 139, 4800 Ft (T31N, R12E, sec 4, SW 1/4) 1463 Comment
  CHSC76089  Pyrrocoma lanceolata var. lanceolata Lowell Ahart; Vernon H. Oswald 1999-9-13 8231 Lassen In the field on the north side of the dirt road, Willow Creek is on the south side of the road, about 250 yards east of the sign in station along Highway 139, Willow Creek Wildlife Area. 1463 Comment
  JEPS100334  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17839 Lassen meadow along jeep road southward from Doyle Grade and 1 air mile South therefrom, just E of Plumas County line, Plumas National Forest 2042 Comment
  UC296045  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC94255  Quercus garryana Alice Eastwood; John Thomas Howell 1940-6-11 7966 Lassen Eastern Fall River Valley Comment
  CAS-BOT-BC105246  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen SW of Susanville on Gold Run Road 1341 Comment
  CHSC5250  Quercus kelloggii P. Balch 1955-7-25 Lassen Eagle Lake. Roop Mt. Rd., 5 mi from Susanville. 1828 Comment
  RSA518917  Quercus kelloggii George K. Helmkamp 1990-10-4 M- 8 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  RSA715982  Quercus kelloggii L. Ahart, John Dittes 2005-6-2 11942 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
  UCD46640  Quercus kelloggii Annie M. Alexander; Louise Kellogg 1946-8-14 5158 Lassen On hill back of town. Susanville. Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  CAS-BOT-BC379462  Ranunculus alismifolius Lassen G. S. Crew 1927-5-25 3 Lassen Lassen Forest, Norval Flat 1747 Comment
  JEPS28456  Ranunculus alismifolius var. alismellus George W. Gillett 1957-6-21 869 Lassen meadow 300 yd n Juniper Lake-Cameron Meadow trail summit; Lassen Volcanic National Park 2118 Comment
  SEINET5338283  Ranunculus alismifolius var. hartwegii J. Young 1982-6-9 s.n. Lassen M.Meyers Ranch, Adin, Ca. 1372 Comment
  HSC95301  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1101365  Ranunculus aquatilis var. capillaceus Verne Grant and Irving Schneider 1947-7-30 8197 Lassen Tule Lake; w end Comment
  UC9368  Ranunculus aquatilis var. capillaceus M. S. Baker and Frank Nutting 1894-7-25 Lassen Eagle Lake 1524 Comment
  NY493017  Ranunculus aquatilis var. diffusus B. M. Bartholomew 1988-7-22 4504 Lassen Mosquito Creek ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  CAS-BOT-BC379022  Ranunculus aquatilis var. diffusus Peter H. Raven; Otto T. Solbrig 1958-6-17 13256 Lassen in a pond along United States Highway 395, 7.1 mi west of Standish Comment
  CHSC117213  Ranunculus arvensis Lowell Ahart; John Dittes 2016-6-7 21003 Lassen Near 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
  SEINET10536136  Ranunculus cymbalaria Mary Susan Taylor 1974-1 Taylor 268 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1101377  Ranunculus cymbalaria var. saximontanus Malcolm A. Nobs and S. Galen Smith 1949-8-20 1484 Lassen creek banks 1 mi n Doyle; Honey Lake Valley, Long Creek Comment
  CHSC84874  Ranunculus flammula var. ovalis Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 352 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  JEPS123841  Ranunculus macounii Lowell Ahart, John Dittes 2015-7-14 20328 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC69597  Ranunculus occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3379 Lassen Honey Lake Valley Comment
  SEINET5338821  Ranunculus occidentalis var. dissectus J. Young 1978-4-3 s.n. Lassen Meyers Ranch, Adin, Calif. Comment
  CHSC115029  Rhamnus alnifolia Stephanie Puentes 2011-8-16 Lassen E of Lake Almanor and NE of Dyer Mtn. Dense thicket on both sides of stream. 1824 Comment
  UC870780  Rhamnus californica C. L. Hitchcock 1940-5-26 6619 Lassen ca 12 mi n Fall River Mills; Fall River 1371 Comment
  RSA747549  Rhamnus rubra K. M. Meyer, A. Townesmith 2007-7-23 156 Lassen Lassen National Forest. 5.6 miles SW on 32N10 off Hwy 44. (Turn at rest area). 1980 Comment
  SEINET5845254  Ribes C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  UC11663  Ribes aureum J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC225883  Ribes cereum B. Bartholomew; B. Anderson 1988-7-22 4503 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountains. 2080 Comment
  CAS-BOT-BC93388  Ribes cereum Barbara Shervanick 1974-5-8 1272 Lassen Eagle Lake Road, on the west side of Eagle Lake, about 18 miles north of SR 36. Eagle Lake drainage area. Cascades. 1584 Comment
  UCR17254  Ribes cereum Frank C. Vasek 1975-7-11 750711- 18 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  RSA0024767  Ribes roezlii James Henrickson 1969-9-4 4267 Lassen 4 miles S of Westwood along Highway 147. 1390 Comment
  RSA0026922  Ribes roezlii Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles below Eagle Lake. 1524 Comment
  SEINET10482953  Ribes roezlii Mary Susan Taylor 1974-5-4 Taylor 229 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  SEINET12216573  Ribes roezlii Unknown 1972-1 286 Lassen 1 mi S of Five Points on Dean's Ridge Rd going to Dean's Meadow Comment
  OBI75884  Ribes velutinum Anthony Baniaga 2011-7-1 414 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  SEINET177615 Image available Ribes velutinum M. E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  SD131593  Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen south side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from susanville to Alturas west of the highway 1385 Comment
  UC10716  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-6-1 Lassen Dixey Mts. Comment
  CHSC117291  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2016-7-13 21115 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC66861  Rorippa curvisiliqua var. orientalis Vernon H. Oswald; Lowell Ahart 1996-9-10 8282 Lassen Mountain Meadows Reservoir SW of Westwood. On the embankment of the railroad along the northwest edge of the reservoir. 1539 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
  CHSC75480  Rorippa nasturtium-aquaticum Vernon H. Oswald; Lowell Ahart 1999-6-9 9736 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395. In marsh. 1353 Comment
  JEPS95871  Rorippa sinuata Vernon H. Oswald and L. Ahart 1999-6-9 9735 Lassen Hwy. 395 northeast of Susanville and north of Smoke Creek Ranch Rd. at Mud Flat: T30N R15E Sect. 3, 4425 ft elevation, dry playa surrounded by sagebrush scrub. Small part of a perennial forming a colony on the bank between the highway and the playa. 1348 Comment
  NY661122  Rorippa sinuata B. Corbin 2002-6-4 1079 Lassen Deep Creek crossing of Highway 395. 1350.3 Comment
  RSA702446  Rosa californica L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat. Black Mountains Experimental Forest. 1790 Comment
  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
  CHSC60400  Rosa woodsii subsp. ultramontana Mary Ann Showers 1992-6-13 2533 Lassen Lassen Volcanic National Park. East shore of Butte Lake, ca. .3 miles south of Butte Creek outlet. West of trail, near shoreline. 1841 Comment
  CAS-BOT-BC148390  Rubus leucodermis John Thomas Howell 1974-7-9 50482 Lassen Coniferous forest between Susanville and SW end of Eagle Lake 1828 Comment
  CHSC23481  Rubus leucodermis Wayne O. Baum 1971-7-5 71 -84 Lassen E. slope of Gallatin Peak. 2072 Comment
  SEINET4199964  Rumex crispus M. J. Williams 1974-7-29 74 -L-64 Lassen 2 mi. West of Hallelujah Junction, south of Hwy. 70 Comment
  CAS-BOT-BC433633  Rumex lacustris M. K. Bellue 1947-9-1 s.n. Lassen Along highway between Doyle and Janesville Comment
  UC1070548  Rumex paucifolius A. Simontacchi 1940-5-18 755 Lassen 6.7 mi e Smoky Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1745691  Rumex salicifolius var. lacustris Annetta M. Carter 1945-9-30 1718 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC526136  Rumex salicifolius var. lacustris John Thomas Howell 1934-7-8 12486 Lassen Spalding's Eagle Lake Comment
  UC6951 Image available Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  UC6952 Image available Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake; ; Silver Lake, Lassen Co. Comment
  UC6962  Rumex salicifolius var. salicifolius M. S. Baker and F. Nutting 1894-7-1 Lassen Dixie Mts. 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
  SEINET4176394  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  JEPS51078  Sagina saginoides Brown and Wieslander 1922-7-30 45 Lassen Eagle Lake, Martin Springs 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
  JEPS28698  Sagittaria cuneata George W. Gillett 1957-7-26 918 Lassen e shore Butte Lake Butte Lake; Lassen Volcanic National Park, e shore Butte Lake 1844 Comment
  UC1051438  Sagittaria cuneata Herbert L. Mason 1955-8-13 14647 a Lassen Willow Creek Valley Comment
  UCD149941  Sagittaria latifolia William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC132739  Salix arctica E. B. Copeland 1931-8-16 s.n. Lassen Mount Lassen, on the south shore of Emerald Lake 2370 Comment
  CHSC96714  Salix eastwoodiae Gordon Leppig; J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  HSC95346  Salix eastwoodiae Gordon Leppig, J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC108055  Salix exigua John Thomas Howell 1975-7-23 51403 Lassen Wet ground along Hwy. 395 between Johnstonville and Jonesville - Sierra Nevada 1280 Comment
  SEINET10682433  Salix exigua Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 137 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  SEINET10932103  Salix lasiandra Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 889 Lassen Collected 3 mi n of milford on hwy 395 at honey lake campgrounds. Comment
  JEPS114627  Salix lasiandra subsp. lasiandra Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  SEINET10682438  Salix lasiolepis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 138 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CHSC60767  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1993-6-3 5489 Lassen Bridge Creek Spring Rd. (Lassen 112, Forest 31N06), at Bridge Creek, N of Hwy 44 between Poison Lake and Susanville. 1746 Comment
  JEPS87437  Salix lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-3 5489 Lassen n. of Hwy. 44 between Poison Lake and Susanville (Bridge Creek Spring Rd. (Lassen 112, Forest 31N06) at Bridge Creek, s. edge of rd.); betw Poison Lake and Susanville, Bridge Creek 1746 Comment
  CHSC99729  Salix lucida subsp. lasiandra Lowell Ahart; John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. 1257 Comment
  JEPS96090  Salix scouleriana Vernon H. Oswald and Lowell Ahart 1996-6-17 7770 Lassen on n side of Hwy 36 ca 0.2 mi e & mile post (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1432 Comment
  UCR67403  Salsola gobicola George K. Helmkamp 1990-9-23 B- 16 -90 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  HSC31743  Salvia dorrii Donald Spalinger 1974-5-16 67 Lassen Near Hwy. leading from Wendel to Flanigan 1280 Comment
  SEINET12319555  Sambucus caerulea Unknown 1978-1 27 Lassen SE end of Eagle L., base of basalt boulders from Black Mnt., T32N,R11E, sec.22 1609 Comment
  UCD137207  Sambucus nigra subsp. caerulea P. B. Schultz 1967-7-12 78 Lassen 14 miles southeast of Adin on State Highway 139. 1524 Comment
  OBI75902  Sanicula graveolens Anthony Baniaga 2011-8-1 475 Lassen Lassen Natl Forest. NW Swain Meadow. Swain Mtn qud T30N R8E sec 27 SE of NW 1768 Comment
  UC1441325  Sanicula tuberosa David H. French 1968-6-2 2880 Lassen about 5 mi e of Westwood (near State Hwy 36) Comment
  CAS-BOT-BC110335  Sarcobatus vermiculatus John Thomas Howell 1975-7-23 51414 Lassen Sierra Nevada. On Highway 395 about 5 miles southeast of Doyle. 1310 Comment
  RSA0009383  Saxifraga oregana Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  JEPS78082  Scirpus acutus var. occidentalis Gary W. Zamzow 1972-7-18 88 Lassen beside Highway 395 16.8 mi s of the intersection with Highway 36; beside Highway 395 1280 Comment
  UC2120  Scirpus fluviatilis J. Burtt Davy Jun 17 1897-Jun 24 1897 3285 Lassen w end Honey Lake; Honey Lake Valley, w end Honey Lake Comment
  JEPS87446  Scirpus nevadensis Vernon H. Oswald and Lowell Ahart 1993-6-14 5521 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake 1566 Comment
  UC766119  Scirpus nevadensis R. F. Hoover 1940-10-10 4679 Lassen Litchfield Comment
  SEINET10744751  Scrophularia lanceolata Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 837 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  SD61030  Scrophularia lanceolata Darley F. Howe 1962-8-2 3923 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc Natl. Forest 1829 Comment
  CAS-BOT-BC214188  Scutellaria John Thomas Howell 1976-7-19 51978 Lassen Gold Run Creek southwest of Susanville, Sierra Nevada 1386 Comment
  NY415691  Scutellaria holmgreniorum N. H. Holmgren 1980-7-5 9524 Lassen 21.9 km (13.6 mi.) from U.S. Hwy. 395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale 1580 Comment
  UC1713590  Scutellaria holmgreniorum G. Schoolcraft 1986-6-18 1630 Lassen s side of Smoke Creek (between Shinn and Smoke Creek ranches) 1493 Comment
  CAS-BOT-BC214268  Scutellaria nana Richard Olmstead 1984-6-27 584 Lassen Rye Patch Canyon Rd., 13.2 mi E of US 395, turnoff ca 14 mi. S of Ravendale 1548 Comment
  CAS-BOT-BC214269  Scutellaria nana John Thomas Howell 1934-6-10 11879 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC214270  Scutellaria nana John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50692 Lassen Slope south and southeast of Diamond Mt., Sierra Nevada 2286 Comment
  RSA128297  Scutellaria nana Peter H. Raven, Otto T. Solbrig 1958-6-17 13270 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  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
  UC1537581  Scutellaria nana Gordon H. True Jr. 1936-6-25 540 Lassen e of Harvey Valley Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  UC1549236  Scutellaria nana Richard Olmstead 1984-6-27 581 Lassen turnoff 14 mi s of Ravendale (10.3 mi e of US 395); Rye Patch Canyon Road 1603 Comment
  UC506981  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest 1722 Comment
  SEINET13947834 Image available Scutellaria nana Noel H. Holmgren, Patricia K. Holmgren 1980-1 9524 Lassen Upper Smoke Creek drainage, 21.9 km from US Hwy 395 via Rye Patch Canyon, 24 km airline distance SE of Ravendale; 1580 m alt., T33N, R16E, SEC36 1580 Comment
  CDA28589  Secale cereale D. Haskelle 2000-2-7 s.n. Lassen Doyle. 0 Comment
  SEINET4891272  Secale cereale M. J. Williams 1974-7-26 74 -I-38 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  UC1184060  Senecio aronicoides Jean Langenheim 1957-6-26 4372 Lassen ne part Said Valley Comment
  SEINET10801294  Senecio aronicoides Katherine L. Morris, David B. Dunn; Melvin L. Conrad 1973-5-25 Morris 230 Lassen Collected 7.6 mi. NW of Jct. of Hwy. 36 & 44 on Hwy. 44, in an area of yellow pine and incense cedar; very moist area. Comment
  CHSC106074  Senecio canus Lowell Ahart; John Dittes 2010-7-31 16990 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC23475  Senecio clarkianus Wayne O. Baum 1971-7-14 71 -61 Lassen N. slope of Gallatin Peak. 2011 Comment
  POM260867  Senecio eurycephalus Alice Eastwood, J. T. Howell 1940-6-11 7968 Lassen Eastern Fall River Valley. Comment
  OBI76980  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen Natl Forest. Southern McCoy Flat. Spalding Tract quad T33N R10E sec 32 SE of SW 1700 Comment
  CAS-BOT-BC363686  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen About 4 miles east of Westwood 1432 Comment
  UC1583967  Senecio hydrophilus G. Schoolcraft 1990-8-14 2122 Lassen between M.P. 56 and 57 on Highway 139 s Adin 1432 Comment
  SEINET10799223  Senecio integerrimus Billy Joe Cox 1971-6-2 Cox 2993 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon Pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC363856  Senecio integerrimus var. exaltatus Doris Kildale Gillespie 1930-5-13 9388 Lassen Between Susanville and Janesville Comment
  RSA0124944  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14 .772 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  RSA0124971  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14776 Lassen By E. end Maul Reservoir, on rd. from Adin to Madeline. 1524 Comment
  JEPS79212  Senecio serra var. serra L. R. Heckard with R. C. Bacigalupi 1980-6-12 5253 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  CHSC13513  Senecio triangularis J. Pitts 1972-7-22 337 Lassen Found ca. .5 mi past Lassen Park gate. 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
  CDA36706  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen Along a bench on the south slope of the Rush Creek Drainage, 0.3 km south of the Smoke Creek Ranch Road, 2 km west of the stateline. 0 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
  UCR18733  Sidalcea glaucescens Frank C. Vasek 1975-7-11 750711- 14 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC205765  Sidalcea oregana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  CHSC6184  Sidalcea oregana R. Gein 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  UC1037274  Sidalcea oregana Leo Whitney 1934-7-10 1760 Lassen 14 mi w of Eagle Lake (near Harvey Valley Spring, Lassen National Forest, Harvey Valley); Lassen National Forest, Harvey Valley 1737 Comment
  UC506975  Sidalcea oregana subsp. oregana George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Lassen Forest , Patterson Flat 1737 Comment
  UC871446  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen 1 mi w Bieber (overflow of Pit River); Pit River Comment
  CHSC66729  Sidalcea oregana subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-8-1 8114 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
  HSC95261  Sidalcea oregana subsp. spicata Gordon Leppig 1998-8-17 1050 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM253297  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 1 mile East of Westwood. 1524 Comment
  NY746728  Sidalcea oregana var. maxima A. Tiehm 1988-6-2 11704 Lassen East side of Snowshoe [Snowstorm?] Mountain, 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway 1402 Comment
  CAS-BOT-BC384311  Silene bernardina Clare B. Hardham 1971-8-22 18369 Lassen Diamond Mountain 2133 Comment
  SBBG71651  Silene bernardina S. W. Hutchinson -Jun-1925 72 Lassen near Eagle Lake 1554 Comment
  UC506918  Silene bernardina George A. Fischer and Irwin H. Johnson 1933-7-14 F- 257 Lassen Lassen Forest 1783 Comment
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  CHSC65097  Silene menziesii Vernon H. Oswald; Lowell Ahart 1995-7-24 7137 Lassen High Cascade Range. Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. At the NE corner of the impoundment on Pine Creek. 1905 Comment
  CAS-BOT-BC389551  Silene nuda John Thomas Howell 1974-7-10 50547 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC389554  Silene nuda Elmer I. Applegate 1923-9-30 4035 Lassen Constantia, Honey Lake Valley Comment
  CHSC115594  Silene nuda Lowell Ahart; John Dittes 2015-7-14 20334 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  CHSC4836  Silene nuda R. Carter 1967-7-16 616 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
  NY813531  Silene nuda subsp. insectivora G. Schoolcraft 1988-7-7 1818 Lassen Southeast corner of Madeline Plains ca. 1 mile south of Horne Ranch 1646 Comment
  JEPS107467  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-1 11850 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CAS-BOT-BC75077  Sisymbrium altissimum Mrs. H. C. Cantelow 1940-5-31 3759 Lassen 11 miles east of McArthur. Comment
  RSA152595  Sisymbrium altissimum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16333 Lassen 13.5 miles E of Susanville. Comment
  UCD115496  Sisymbrium altissimum P. B. Kennedy 1927-9-1 s.n. Lassen Janesville. Comment
  UCR88862  Smilacina stellata J. T. Howell, G. H. True, Margaret Williams 1973-6-28 49421 Lassen Sierra Nevada Mtns/ Modoc Plateau, Elysian Valley, west of Janesville 1326 Comment
  CDA34234  Solanum sarrachoides L. Ahart, J. Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4,235 feet from Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley. Comment
  CDA18276  Solanum triflorum G. D. Barbe 1974-8-2 1942 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC158899  Sorbus scopulina John Thomas Howell; Gordon H. True 1973-8-1 50151 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  HSC95264  Sparganium emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1099936  Sparganium emersum var. emersum Verne Grant and Irving Schneider 1947-8-24 8271 Lassen nw shore Blue Lake (n Lassen County) Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CAS-BOT-BC390559  Spergularia rubra G. Schoolcraft 1997-8-6 2656 Lassen Along w. fork of Gold Run Creek about 8 miles sw of Susanville 1859 Comment
  CHSC64869  Sphaeromeria potentilloides var. potentilloides Vernon H. Oswald 1995-6-26 6934 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the e side of the road adjacent to a flat of low sagebrush. 1542 Comment
  CAS-BOT-BC374759  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 1998-6-29 2319 Lassen Ash Valley along main road crossing Ah [Ash] Crk. 1554 Comment
  CHSC5277  Stachys ajugoides var. rigida P. Balch 1955-7-17 Lassen Papoose Creek, near Gallatin's. Eagle Lake. 1615 Comment
  RSA746511  Stachys ajugoides var. rigida K. M. Meyer, A. Townesmith 2007-7-21 142 Lassen Lassen National Forest. CA, 1.3 mi. on road 110, off Hwy A21, 1821 Comment
  CHSC64776  Stanleya pinnata var. pinnata Vernon H. Oswald 1995-6-7 6841 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 19.5 just w of Skedaddle Creek, e of Wendel, ne of Susanville. Flat bordering the road. 1237 Comment
  CAS-BOT-BC60993  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen Near Karlo, about 12 miles north of Litchfield. 1356 Comment
  NY608067  Stanleya viridiflora G. Schoolcraft 1998-7-14 2763 Lassen Along Karlo Road, 1 mile south of Biscas Reservoir Road. 1356.4 Comment
  SEINET5337331  Stellaria longipes C. G. Gulling 1905-1 1551 Lassen Big Meadows Comment
  SJSU8510  Stellaria longipes subsp. longipes J. W. Tilden 1960-6-27 1516 Lassen by Moonlight Rd c. 5 mi E of Westwood 1524 Comment
  CHSC99292  Stellaria longipes var. longipes Lowell Ahart; John Dittes 2008-6-20 14956 Lassen About 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC375006  Stenotus acaulis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50659 Lassen Summit ridge of Diamond Mountain 2346 Comment
  CHSC77201  Stenotus lanuginosus G. Schoolcraft 1993-6-10 2294 Lassen Along Clark's Valley Rd. s. of Red Rock Lake. 1828 Comment
  CAS-BOT-BC375066  Stephanomeria Gordon H. True 1973-8-22 7657 Lassen North shore of Honey Lake ca. 5 miles east of Janesville & just west of Hartson Reservoir 1219 Comment
  UC1037278  Stephanomeria lactucina Leo Whitney 1934-7-22 1747 Lassen 6 mi w Eagle Lake, lower end (near Antelope Mountain); Lassen National Forest 1889 Comment
  CDA8868  Stephanomeria spinosa E. E. Fix 1946-7-21 Lassen Susanville. 0 Comment
  CAS-BOT-BC322921  Stephanomeria tenuifolia George W. Gillett 1957-7-26 901 Lassen Butte Lake, Lassen Volcanic National Park 1844 Comment
  CHSC23504  Stephanomeria tenuifolia Wayne O. Baum 1971-7-19 71 -76 Lassen E. slope of Gallatin Peak. 2072 Comment
  CHSC118490  Stipa comata var. comata Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. About 140 yards souteast of central entrance to Sandy Beach cinder pits and 1.9 air miles north-northwest of Spalding marina. UTM 687661 x 4506890. 1563 Comment
  HSC22876  Stipa hymenoides John Pratt 1970-6-14 15 Lassen East of Janesville Comment
  UCD51436  Stipa thurberiana A. A. Beetle; G. L. Stebbins Jr. 1942-5-30 3362 Lassen 10 miles NE of McArthur. Comment
  CHSC57125  Streptanthus Mary Meyer 1980-7-21 Lassen Near sharp bend in road on way to Fire Lookout. 2316 Comment
  SEINET10448889  Streptanthus cordatus Billy Joe Cox 1971-6-2 Cox 2992 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
  UC1184065  Streptanthus tortuosus var. orbiculatus Jean Langenheim 1957-6-26 4381 Lassen from area adjacent to 1937 chaparral quadrat (ne part of Lassen Co.); Northwest Said Valley Comment
  CHSC110305  Suaeda nigra L. P. Janeway; B. Castro 2012-7-2 10925 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC60831  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-28 5605 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  JEPS114622  Swertia albicaulis var. albicaulis Lowell Ahart, John Dittes 2008-6-19 14881 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
  UC1123453  Swertia albicaulis var. albicaulis Robert W. Gardner 1937-6-16 G- 13 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  CAS-BOT-BC269699  Symphoricarpos mollis G. Schoolcraft 1997-6-24 2604 Lassen Doyle Grade W of Doyle 1706 Comment
  CHSC23553  Symphoricarpos rotundifolius var. rotundifolius W. O. Baum 1971-7-5 21 Lassen N slope of Gallatin Peak. 2011 Comment
  JEPS103196  Symphyotrichum bracteolatum G. Schoolcraft 1996-9-9 2585 Lassen Lower end of Willow Creek below petroglyphs 1310 Comment
  UCD136493  Symphyotrichum campestre Verne Grant; Irving Schneider 1947-7-31 8210 Lassen northeast quarter of George Williams section 19, Madeline Plain. Comment
  CAS-BOT-BC98932  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1831 Lassen Trail from Morgan's Springs to Lassen Butte Comment
  JEPS31869  Symphyotrichum frondosum R. F. Hoover 1940-10-1 4660 Lassen near, between Jonesville and Standish Honey Lake Comment
  CAS-BOT-BC98541  Symphyotrichum spathulatum B. C. Cain 1925-8-24 82 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  JEPS122175  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-8-20 19720