Search Results — 2000 specimen records retrieved (1623 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78034  Abies concolor Doris K. Kildale 1927-9-11 2794 Lassen 8-10 miles north of Susanville 1524 Comment
  CDA19039  Abies concolor Mark Lubinski 2000-10-12 PDR 070105 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36. 0 Comment
  CHSC84856  Abies concolor L. P. Janeway; B. Castro 2003-10-5 8002 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  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
  CHSC12419  Achillea millefolium Anne Linda Brisk 1969-6-20 9 Lassen Growing in Dean's Meadow. 1950 Comment
  CHSC61621  Achillea millefolium Arthur C. Barrett 1918-6-19 29 Lassen Laufman Ranger Station. NW slope in Plumas Forest. 1463 Comment
  HSC4553  Achillea millefolium M. T. Milligan 1964-7-16 136 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  JEPS127717  Achillea millefolium Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -172 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  SEINET11842145  Achillea millefolium Unknown 1978-1 30 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. T29N, R10E, sec. 24 1500 Comment
  CAS-BOT-BC260400  Achnatherum hymenoides Margaret Williams; Steven Williams 1974-7-26 74 -L-1 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  CAS-BOT-BC260403  Achnatherum hymenoides P. Monnet 1913-7-1 799 Lassen Hot Springs Peak 1828 Comment
  CHSC60791  Achnatherum hymenoides Vernon H. Oswald; Lowell Ahart 1993-6-14 5544 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
  SEINET249775 Image available Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UC773978  Achnatherum lemmonii L. R. Short and J. Warren 1936-6-9 S- 401 Lassen Burgess Spr. Exp. Range Lassen Forest 1808 Comment
  UCD32658  Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CHSC109530  Achnatherum occidentale subsp. californicum B. Castro; L. P. Janeway 2003-10-5 1459 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail between Cone Lake and Triangle Lake, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  CAS-BOT-BC218612  Achnatherum occidentale subsp. pubescens John Thomas Howell 1955-7-19 30821 Lassen East side of Beckwourth Pass, Sierra Nevada 1493 Comment
  UC1024810  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-11 3271 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1143012  Achnatherum occidentale subsp. pubescens August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest 2133 Comment
  UC1153871  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2066 Lassen 5.5 mi w, along State Hwy. 36 Susanville (volcanic rubble under pine) 1447 Comment
  UCD51209  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2051 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  UC1024911  Achnatherum thurberianum Leo Whitney 1935-6-25 3372 b Lassen ca 13 mi w of upper end Eagle Lake; Ashurst Mountain Comment
  UC584327  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2355 Lassen along highway from McArthur to Bieber; Big Valley Mt. 1100 Comment
  CAS-BOT-BC217991  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  CHSC30681  Acmispon americanus var. americanus M. S. Taylor 1974-7-10 281 Lassen In meadow, ca. 0.5 mi e of Gallatin Beach, ca. 0.5 mi s of Eagle Lake, ca. 12 mi ne of Susanville. 1524 Comment
  CHSC5075  Acmispon americanus var. americanus D. L. Stites 1967-7-8 121 Lassen Ca. 18 mi n of Susanville. 1371 Comment
  CHSC113083  Acmispon denticulatus Lowell Ahart; John Dittes 2013-7-23 18888 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS60355  Aconitum columbianum Brown and Wieslander 1922-7-30 19 Lassen Eagle Lake, Martin Springs Comment
  OBI75866  Aconitum columbianum subsp. columbianum Anthony Baniaga 2011-8-9 490 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  CAS-BOT-BC412873  Aconogonon davisiae Lassen 1927 G. S. Crew 1927-6-25 31 Lassen Lassen National Forest. Norval Flat 1747 Comment
  JEPS31589  Adonis aestivalis J. R. Sweeney 1962-7-5 2653 Lassen 1/2 mi n of Willow Creek Guard Station (16 mi n of Susanville, Modoc National Forest, on State Highway 139, 54 mi s of Adin); Modoc National Forest, State Highway 139 1219 Comment
  JEPS124517 Image available Adonis aestivalis D. Griffiths 1967-7-12 179 Lassen 3 miles north of Willow Creek Camp. On Hiway 139. 100 yards east of road. Comment
  UCD95438  Adonis aestivalis Gerald Dickinson 1963-7-2 s.n. Lassen Willow Creek Campground, ca. 18 miles southeast of Adin on road to Termo. 1219 Comment
  CAS-BOT-BC383114  Agastache parvifolia Andrew Townesmith; Karen M. Meyer 2007-7-22 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44 1971 Comment
  CHSC67060  Agastache parvifolia Willis Ball 1969-6-25 27 Lassen Found in Upper Murrer's Meadow. 1584 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
  UC1483811  Agastache urticifolia G. Schoolcraft 1979-7-5 122 Lassen n face Observatioin Peak; n face of Observation Peak 1828 Comment
  SEINET10669171  Agoseris Jeffrey Huber 1971-6-2 Huber 123 Lassen Approx. 30 mi. N of Susanville, on CA Hwy. 139, in basalt; Pinus-Artemisia-Juniper Assoc. 1646 Comment
  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
  RSA0009531  Agoseris grandiflora Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC585114  Agoseris parviflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1793 Lassen about 2 mi n Madeline 1363 Comment
  CDA1684  Agropyron cristatum subsp. pectinatum G. D. Barbe 1974-8-2 1919 Lassen Hallelujah Junction, US 395 at Hwy 70, northwest corner. Comment
  CAS-BOT-BC127240  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50226 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  CHSC112795  Agrostis exarata Lowell Ahart; John Dittes 2013-7-22 18858 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC69074  Agrostis exarata Gary Schoolcraft 1980-8-13 351 Lassen N side of Diamond Mountain, south of Susanville 1951 Comment
  JEPS100322  Agrostis exarata Dean W. Taylor 2001-7-12 17829 Lassen Diamond Mountains, spring at mouth of canyon ca. 4 miles NW of Constantia, along Forest Road 25N02X 1341 Comment
  UC1024693  Agrostis exarata Leo Whitney 1933-8-2 2152 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCD39949  Agrostis exarata A. H. Murphy 1953-6-24 HG 48 Lassen Lassen County?: Hog Lake, James pasture. 762 Comment
  UCD52428  Agrostis exarata L. Whitney 1933-8-2 2152 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  CAS-BOT-BC139680  Agrostis gigantea Clare B. Hardham 1969-8-28 17427 Lassen Sierra Nevada. West of Janesville. Comment
  CHSC58860  Agrostis pallens Vernon H. Oswald; Lowell Ahart 1992-7-16 5107 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  UCD53171  Agrostis pallens L. D. Whitney 1935-6-27 s.n. Lassen near Fruit Grower Supply Co. Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  UCD53279  Agrostis scabra August L. Hormay 1932-7-20 s.n. Lassen Lassen National Forest. Bogard Ranger Station. Comment
  POM98581  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  CAS-BOT-BC138626  Agrostis stolonifera G. Schoolcraft 1999-9-8 2884 Lassen Along Susan River west of Susanville. 1341 Comment
  UCSC000092  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Bogard Ranger Station - Lassen National Forest Comment
  CAS-BOT-BC267065  Alisma gramineum Malcom A. Nobs; S. Galen Smith 1949-7-22 1074 Lassen Marshes along Willow Creek, Willow Creek Valley, 10 miles N of Susanville Comment
  RSA0039525  Alisma triviale Lowell A. Ahart, John Dittes 2012-7-9 18294 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
  GMDRC7739  Allium acuminatum J. M. Andre, G. Clifton 1993-6-1 33419 Lassen Modoc Plateau: along US Hwy 395 approx 11 mi. SE of Ravendale, just north of Tule Patch Spring, east of Snowstorm Mtn 1588 Comment
  POM110306  Allium acuminatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC843269  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen e Fredonyer Pass (on Highway #36) 1645 Comment
  CAS-BOT-BC459571  Allium acuminatum H. C. Cantelow 1940-5-31 s.n. Lassen 4 miles east of Mc Arthur, Highway 299 Comment
  SEINET194965  Allium acuminatum A. A. Heller 1938-1 Lassen 0 Comment
  SEINET3883817  Allium anceps D. W. McNeal 1980-6-1 2340 Lassen Beside Co. Highway 88, between Adin and Madeline, 15.0 miles east of Highway 299 in Adin.; 0 Comment
  CAS-BOT-BC470924  Allium lemmonii D. B. Dunn; B. J. Cox 1971-6-2 17786 Lassen 6 miles north of Hallelujah Junction on U.S. Hwy 395 1402 Comment
  CAS-BOT-BC474047  Allium parvum Louella Bass 1973-4-15 20 Lassen Elysian Valley 1325 Comment
  POM110004  Allium platycaule Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC119983  Allium platycaule T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC474073  Allium platycaule H. D. Ripley; R. C. Barneby 1943-6-14 5733 Lassen Fredonyer Pass 1676 Comment
  CDA28189  Alopecurus aequalis A. A. Beetle 1941-6-28 Lassen Route 36, 10 mi west of Chester 0 Comment
  CHSC65366  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1995-8-14 7194 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittant stream, N of Susanville. 1676 Comment
  CHSC117285  Alopecurus carolinianus Lowell Ahart; John Dittes 2016-7-15 21214 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
  CAS-BOT-BC138012  Alopecurus geniculatus Peter H. Raven; Otto T. Solbrig 1958-6-17 13299 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  CDA43006  Alopecurus geniculatus L. Ahart, John Dittes 2008-6-2 14960 Lassen About 300 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. Comment
Read comments
Oct 5 2019
  OBI77305  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  UC1130817  Alopecurus geniculatus A. Simontacchi 1940-5-17 745 Lassen 5.9 mi. s. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. 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
  CHSC54178  Alyssum minus subsp. micranthum Vernon H. Oswald 1991-5-28 4629 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. In meadow. 1267 Comment
  CHSC71228  Alyssum minus subsp. micranthum Vernon H. Oswald; Lowell Ahart 1998-6-4 9144 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. At the parking area at the end of the spur road. 1389 Comment
  HSC102800  Alyssum simplex L. Ahart 2011-6-20 17493 Lassen 1.9 air miles NW of Moll Reservoir, 2.8 air miles W of Ash Valley, 8.4 air miles SE of Adin; ~ 80 yds. N of where road crosses Hunsinger Draw 1521 Comment
  JEPS93815  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1998-6-4 9144 Lassen s of Constantia (at parking area at end of spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  JEPS94600  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1997-5-27 8496 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
  CHSC5065  Amaranthus albus D. L. Stites 1967-7-1 143 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  JEPS123852  Amaranthus blitoides Lowell Ahart, John Dittes 2015-7-14 20324 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  CAS-BOT-BC42891  Ambrosia acanthicarpa Margaret Williams; Steven Williams 1974-7-26 74 -L-10 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC142908  Amelanchier A. A. Heller 1938-6-4 15144 Lassen On the bank of a small stream in the pine forest a mile east of Fredonyer Pass on Highway #36. 1706 Comment
  UCD112861  Amelanchier alnifolia Beecher Crampton 1954-5-11 1881 Lassen Beckwourth Pass, Plumas. 1588 Comment
  RSA166673  Amelanchier pallida Alfred Richardson 1961-5-30 8 Lassen S of Eagle Lake. 1402 Comment
  CAS-BOT-BC142539  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  JEPS28676  Amelanchier utahensis George W. Gillett 1957-7-26 903 Lassen Butte Lake Lassen Volcanic National Park (point of rocks w of outlet and above trail) 1844 Comment
  SD43502  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  UC506908  Amelanchier utahensis George A. Fischer and Irwin H. Johnson 1933-7-14 F 270 Lassen Lassen Forest 1737 Comment
  UCR139398  Amelanchier utahensis P. A. Munz 1947-5-20 11886 Lassen Eastern Sierra Nevada Mtns., Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  UCD146584  Amphiscirpus nevadensis Richard R. Halse 2010-8-25 8087 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  JEPS61105  Amsinckia menziesii var. menziesii W. L. Jepson 1918-8-2 7777 Lassen Beckwith Pass 1463 Comment
  UCD159573  Anaphalis margaritacea D. S. Park 2011-6-27 310 Lassen East of Westwood. Growing near Willard Creek. 1700 Comment
  CHSC71068  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9134 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  POM33879  Anisocoma acaulis Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.?] 1220 Comment
  CAS-BOT-BC63951  Antennaria argentea A. M. Vollmer; L. Beane 1953-7-1 101 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC63952  Antennaria argentea H. D. Ripley; R. C. Barneby 1944-5-29 5958 Lassen Susanville Comment
  CHSC54170  Antennaria dimorpha Vernon H. Oswald 1991-5-28 4624 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  UC1951075  Antennaria dimorpha Debra Valov 2009-4-25 2009016 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  HSC69048  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Schaffer Mtn. about 1/2 mile west of Hwy. 395 1463 Comment
  UC1609173  Antennaria geyeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5614 .1 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  CAS-BOT-BC58691  Antennaria luzuloides John Thomas Howell 1934-7-6 12443 Lassen Harvey Valley Comment
  CAS-BOT-BC58692  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen East of Westwood 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
  UC1523734  Antennaria luzuloides Gary Schoolcraft 1981-7-8 498 Lassen s of Coulthurst Flat 1920 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
  UC1523728  Antennaria rosea Gary Schoolcraft 1982-7-14 800 Lassen w of Constantia 1524 Comment
  CHSC27593  Apocynum androsaemifolium N. E. Heiken 1978-7-10 85 Lassen Colman Lake, several mi S of Eagle L. 1962 Comment
  CAS-BOT-BC392013  Aquilegia Clare B. Hardham 1969-8-28 17453 I Lassen Slope west of Janesville Comment
  CAS-BOT-BC392210  Aquilegia formosa John Thomas Howell 1974-7-10 50545 Lassen Elysian Valley 1325 Comment
  CHSC12461  Aquilegia formosa var. truncata Robert W. Severin 1969-6-25 15 Lassen West side of Murrer's Upper Meadow. 2 mi ESE E.L.B.S. 1584 Comment
  CHSC4273  Aquilegia formosa var. truncata K. R. Stern 1967-6-24 2404 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  SEINET10833275  Arabis David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17783 Lassen 6 mi n of hallelujah jct on u.s. 395, In artemisia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  NY112495  Arabis holboellii var. pinetorum R. C. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake Comment
  HSC25977  Arabis holboellii var. retrofracta D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19270 Lassen Harvey Valley near Cone Springs Comment
  HSC30184  Arabis holboellii var. retrofracta D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19199 Lassen Harvey Valley near Cone Springs Comment
  JEPS53155  Arabis rectissima var. rectissima Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  NY119564  Arabis sparsiflora var. sparsiflora D. W. McNeal 1983-6-5 2842 Lassen Above co. rd. #201 above the N shore of Eagle Lake, 2.9 miles W of the jct. of Hwy. 139. Comment
  SEINET5340852  Arabis sparsiflora var. subvillosa R. C. Rollins, K. W. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake. Comment
  SEINET1916077  Arceuthobium abietinum R. L. Mathiasen 2010-1 1061 Lassen 0.3 km W of Fredonyer Pass on Rte. 36; On Abies Iowiana 1660 Comment
  SEINET2471272  Arceuthobium abietinum R. L. Mathiasen 2008-9-15 2008 -27 Lassen 12.8 km S. of jct. of Westwood Road on State Route 44 1720 Comment
  CAS-BOT-BC45900  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45903  Arctostaphylos nevadensis Mrs. E. C. Sutliffe 1927-6-1 s.n Lassen Drakesbad, Lassen Volcanic Park Comment
  CAS-BOT-BC45906  Arctostaphylos nevadensis Marcus E. Jones 1897-7-7 s.n Lassen Lassen's Peak 1828 Comment
  CAS-BOT-BC45908  Arctostaphylos nevadensis M. S. Baker; Frank Nutting 1894-1-1 s.n Lassen Lassen Country Comment
  CHSC21058  Arctostaphylos nevadensis M. S. Taylor 1975-7-16 838 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. Comment
  CHSC5245  Arctostaphylos nevadensis M. West 1946-7-12 Lassen Eagle Lake. Silver Lake. 1981 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
  SEINET530728  Arenaria congesta var. lithophila Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  CAS-BOT-BC27516  Arenaria congesta var. simulans Amos Arthur Heller 1938-6-23 15198 Lassen 2 miles E of Fredonyer Pass 1645 Comment
  UC8098  Arenaria congesta var. subcongesta M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC852268  Arenaria congesta var. subcongesta A. A. Heller 1938-6-23 15198 Lassen e Fredonyer Pss 1645 Comment
  SEINET12090189  Argemone munita Unknown 1977-1 14 Lassen ca .5 mi S of Highway 395, 2 mi W of Milford at Honey Lake Campground, Sec. 16, T27N, R13E 1268 Comment
  CHSC6196  Argemone munita subsp. rotundata M. West 1946-6-14 Lassen Antelope Grade. 1615 Comment
  CAS-BOT-BC401788  Argemone munita subsp. rotundata John Thomas Howell 1924-8-13 638 Lassen Honey Lake Comment
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  RSA152609  Argemone munita subsp. rotundata I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. e of Susanville Comment
  SEINET10940510  Argemone platyceras var. hispida Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 864 Lassen Collected on raod bank 24 mi n of calif state line of hwy 395. Comment
  CDA10113  Arnica amplexicaulis G. D. Barbe 1982-7-12 3871 Lassen Along South Grasshopper Road at west base of Grasshopper Ridge, 4 miles south of Termo-Grasshopper Road. Comment
  JEPS35881  Arnica chamissonis Leland S. Smith 1918-7-22 1007 Lassen Blue Lake Modoc National Forest, Warner Range (w end), Blue Lake 1874 Comment
  UC1776710  Arnica chamissonis G. Schoolcraft 1997-8-1 2385 Lassen About 2 miles W of Boot Lake 2255 Comment
  UCD129113  Arnica chamissonis Chandler V. Jensen 1962-7-1 s.n. Lassen north of Susanville, Secret Valley near Said Reservoir. Comment
  HSC104020  Arnica chamissonis subsp. foliosa L. Ahart, John Dittes 2008-6-20 14902 Lassen About 7.0 air mi. NE of Bieber, ~4.0 air mi. NE of Headquarters at Ash Creek State Wildlife Area; ~ 10 yds. west of where the levee road crosses Big Valley Canal, in Big Valley. 1264 Comment
  JEPS21729  Arnica dealbata Franklin P. Nutting Lassen mts s Eagle Lake Eagle Lake Comment
  CAS-BOT-BC295821  Arnica dealbata W. S. Williams 1924-9-1 4 Lassen Lassen National Forest. East of Brokeoff Mt. 2133 Comment
  SEINET8734516 Image available Arnica foliosa var. incana A. L. Hormay 1941-1 8 Lassen Lassen; Sec. 31, T 33N, R. 9 E, Little Valley 1679 Comment
  CAS-BOT-BC82712  Arnica longifolia James Jokerst 1983-7-23 1870 Lassen Grasshopper Valley Quad. Near Madeline Plains 1614 Comment
  CHSC66715  Arnica mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8123 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  JEPS35883  Arnica mollis Frances D. Payne 1929-7-12 99 Lassen Upper Silver Creek, se extremity of Warner Mts Warner Mountains, Upper Silver Creek 2499 Comment
  UC1137701  Arnica mollis A. Simontacchi 1940-5-28 785 Lassen 3.2 mi wsw Patterson Mtn.; Halls Flat Quad. 1767 Comment
  CHSC12429  Arnica nevadensis Robert W. Severin 1969-6-21 10 Lassen 2 mi SSE E.L.B.S. between Five Points turnoffs. 1584 Comment
  JEPS103219  Arnica sororia G. Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UCD129188  Artemisia arbuscula F. C. Raney 1966-6-25 s. n. Lassen Harvey Valley, Lassen National Forest. Comment
  UCD35734  Artemisia arbuscula Beecher Crampton 1960-6-20 5735 Lassen Grass Valley ca. 4 miles southeast of Black's Mtn. Exper. Station USDA. 1676 Comment
  UC217036  Artemisia arbuscula subsp. arbuscula H. M. Hall 1921-9-10 11674 Lassen eastern Lassen County Comment
  CHSC76079  Artemisia biennis Lowell Ahart; Vernon H. Oswald 1999-9-13 8213 Lassen Just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  SEINET222925 Image available Artemisia cana A. A. Beetle 1957-8-16 Lassen Lassen County: Between Ravendale and Termo. Comment
  HSC68838  Artemisia cana subsp. bolanderi Gary Schoolcraft 1979-9-27 195 Lassen Painter Flat 1720 Comment
  CAS-BOT-BC84832  Artemisia cana subsp. cana G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  UCD159571  Artemisia douglasiana D. S. Park 2011-6-27 308 Lassen East of Westwood. Growing near Willard Creek. 1471 Comment
  CAS-BOT-BC499174  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen Lassen Volcanic National Park. Snag Lake; near the Butte Lake Trail above Snag Lake 1859 Comment
  RSA523927  Artemisia ludoviciana subsp. ludoviciana G. H. True 1937-7-10 783 Lassen Bull Flat, Refuge 1Q 1524 Comment
  CHSC5197  Artemisia tridentata P. Balch 1955-7-10 Lassen Fields adjoining Stafford's Ranch, Eagle Lake. 1584 Comment
  CHSC110309  Artemisia tridentata subsp. tridentata L. P. Janeway; B. Castro 2012-7-2 10927 Lassen Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road. 1473 Comment
  CHSC76080  Artemisia tridentata subsp. tridentata Lowell Ahart; Vernon H. Oswald 1999-9-13 8202 Lassen On the west side of the dirt road and 1/4 mile south of the sign-in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  SEINET3397751  Artemisia tridentata subsp. tridentata Unknown 1994-1 s.n. Lassen 15 mi. N. of Litchfield Comment
  UC74062  Artemisia tridentata subsp. tridentata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  JEPS124637 Image available Artemisia vulgaris Dixie Funnell 1965-7-13 137 Lassen Growing under bridge about 4 feet from the water. Highway 299, under bridge 705 for pit overflow. Comment
  HSC3295  Asclepias cordifolia H. E. Parks, S. T. Parks Jun 1928 226 Lassen Lassen National Park, Drakesbad 1982 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
  CHSC105766  Asclepias fascicularis Nick Otting 2005-7-28 Lassen Five Springs Creek, downstream from Five Springs. 1356 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
  POM76177  Asclepias fascicularis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC6223  Asclepias speciosa M. West 1946-7-7 Lassen Eagle Lake 1584 Comment
  UCR73170  Astragalus G. L. Webster 1989-5-13 7721 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA0027352  Astragalus John F. Emmel 1994-7-17 1327 Lassen Summit area of Observation Peak. 2378 Comment
  RSA624916  Astragalus B. J. Cox, Paul Gallian 1971-6-2 2599 Lassen Hallelujah Jct. intersection of U.S. 395 and Hwy 70. Comment
Read comments
Jan 15 2016
  POM204051  Astragalus accidens var. hendersonii J. T. Howell 1934-6-10 11875 Lassen Janesville Comment
  CHSC117759  Astragalus agrestis Virginia Dains; Joanne Crawford 2016-7-13 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km northwest of Termo, 4.7 km west of Highway 395, 150 meters south of agricultural fields. 1617 Comment
  UC13379  Astragalus agrestis Mrs. R. M. Austin and Bruce June 1898 2211 Lassen Madaline Plains Comment
  CAS-BOT-BC177438  Astragalus andersonii Alice Eastwood; John Thomas Howell 1940-6-16 8351 Lassen Omira Comment
  CDA26597  Astragalus andersonii L. Ahart, J. Dittes 2005-6-1 11917 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. Comment
  CHSC93569  Astragalus andersonii Lowell Ahart; John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  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
  SEINET5323085  Astragalus andersonii M. J. Williams, A. Tiehm 1978-5-14 78- 48 -2 Lassen 2.8 mi S of northern road into Red Rock (off Hwy 395). 1372 Comment
  HSC61704  Astragalus anxius Thomas W. Nelson, Jane P. Nelson 1980-7-6 5988 Lassen In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin. Comment
  RSA614442  Astragalus anxius M. L. Carlson 1996-6-11 4202 Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET4856104  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley, ca. 25 km W of madeline, along Ash Valley Rd., on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sect. 5. 1550 Comment
  NY790603  Astragalus argophyllus var. argophyllus A. Tiehm 1986-5-12 10347 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CHSC63396  Astragalus canadensis var. brevidens Vernon H. Oswald 1994-7-8 6368 Lassen Wildlife Viewing Area along Hwy. 139 on the NE shore of Eagle Lake, 5.9 mi S of County Rd. 201 (A1). 1557 Comment
  CAS-BOT-BC178766  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. east of Madeline Plains. 1712 Comment
  SEINET948261  Astragalus curvicarpus Ira. L. Wiggins, Dorothy B. Wiggins 1961-1 16331 Lassen Gravelly slopes at margin of grain field 13.5 mi. E of Susanville, sec 36 Comment
  CAS-BOT-BC177844  Astragalus curvicarpus var. curvicarpus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville Comment
  SEINET7103940  Astragalus curvicarpus var. curvicarpus D. W. McNeal 1983-6-5 2839 Lassen Hwy #395, 9.2 mi N of the Plumas Co. line.; 0 Comment
  NY658500  Astragalus filipes P. H. Raven 1958-6-17 13290 Lassen Along US Highway 395, o.4 mile South of Ravendale Comment
  SEINET231384 Image available Astragalus filipes Margaret J. Williams 1983-7-31 83- 125 -1 Lassen Ash Valley Road, 17 mi from Aden 1829 Comment
  CAS-BOT-BC186853  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch 1463 Comment
  CAS-BOT-BC186857  Astragalus gibbsii G. Schoolcraft 1993-6-8 2285 Lassen US Highway 395 at Airport Rd. 1274 Comment
  CAS-BOT-BC186860  Astragalus gibbsii John Thomas Howell 1974-7-8 50462 Lassen Susanville 1295 Comment
  CDA19718  Astragalus gibbsii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 1341 Comment
  NY674271  Astragalus gibbsii P. A. Munz 1947-5-20 11889 Lassen Milford 1265 Comment
  UC1332123  Astragalus gibbsii Alice Eastwood and John Thomas Howell 1940-6-16 8336 Lassen near Susanville Comment
  CAS-BOT-BC186867  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1942-5-22 4541 Lassen Loyalton 1524 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 Comment
  RSA110069  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5692 Lassen South of Milford. 1433 Comment
  CAS-BOT-BC186915  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  POM24454  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  RSA0006774  Astragalus iodanthus var. diaphanoides H. D. Ripley, R. C. Barneby 1943-1-15 5768 Lassen Snake Creek, 13 miles NE of Viewland [?]. 1402 Comment
  CHSC115597  Astragalus lemmonii Lowell Ahart; John Dittes 2015-7-14 20336 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  CAS-BOT-BC187156  Astragalus lentiginosus var. chartaceus John Thomas Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  POM25710  Astragalus lentiginosus var. floribundus Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC5280  Astragalus lentiginosus var. lentiginosus 1926-6-1 Lassen Buck's Point, Eagle Lake. 1615 Comment
  CHSC99508  Astragalus lentiginosus var. lentiginosus Lowell Ahart; John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber. 1268 Comment
  UC1128892  Astragalus lentiginosus var. lentiginosus A. Simontacchi 1940-6-8 844 Lassen Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest) Comment
  RSA109610  Astragalus lentiginosus var. platyphyllidius H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen Hidden Valley E of Susanville 1311 Comment
  CAS-BOT-BC192843  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC192847  Astragalus pulsiferae H. D. Ripley; R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley 1615 Comment
  SEINET241244 Image available Astragalus pulsiferae S. L. Welsh 2001-6-14 28258 Lassen E of Hwy. 395, road to Rams Horn Spring campground. 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
  SEINET4853424  Astragalus pulsiferae var. coronensis Stanley L. Welsh 2001-6-14 28158 Lassen E of Hwy 395, Rd to Rams Horn Spring campground. 1540 Comment
  CHSC98311  Astragalus pulsiferae var. pulsiferae R. Ondricek-Fallscheer 1999-7-2 196 Lassen About 3/4 air mi SW of Hallelujah Junction (the junction of Hwy 70 and Hwy 395). 1499 Comment
  UC13450  Astragalus pulsiferae var. suksdorfii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SEINET6654255  Astragalus purshii var. lagopinus Stanley L. Welsh, N. Duane Atwood 2001-6-14 28157 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1539 Comment
  NY678236  Astragalus purshii var. lectulus S. L. Welsh 2001-6-14 28157 Lassen East of Highway 395, road to Rams Horn Spring campground 1539 Comment
  RSA0007957  Astragalus purshii var. lectulus H. D. Ripley, R. C. Barneby 1944-5-30 5983 Lassen 2 miles N of Madeline. 1707 Comment
  CAS-BOT-BC194088  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Perkin's Ranch, top of Diamond Mt., Susanville 2225 Comment
  UC1609114  Astragalus purshii var. purshii Vernon H. Oswald and Lowell Ahart 1993-6-14 5520 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89); w shore Eagle Lake, Sandy Beach 1566 Comment
  RSA0006859  Astragalus purshii var. purshii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1944-5-29 5957 Lassen Susanville Comment
  POM16083  Astragalus purshii var. tinctus M. S. Baker 1894-7-9 s.n. Lassen Dixey Valley Comment
  UC1136766  Astragalus purshii var. tinctus George A. Fischer and Irwin H. Johnson 1933-7-14 F- 249 Lassen Lassen Forest 1767 Comment
  RSA38443  Astragalus purshii var. tinctus P. A. Munz 1947-5-19 12269 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  RSA60318  Astragalus purshii var. tinctus E. K. Balls 1950-5-9 15955 Lassen 0.5 mi. south of Modoc Co. Line, Hwy 395. 1220 Comment
  UC1601984  Astragalus purshii var. tinctus Mrs. R. M. Austin 1879-1 Lassen Comment
  UC82576  Astragalus spaldingii unknown 1892-6-22 Lassen Honey Lake Comment
  SEINET12165119  Astragalus whitneyi N. H. Holmgren, Holmgren, P. K. 1980-1 9514 Lassen Observation Peak, S side of Mt. 18km airline dist. E of Ravendale. T34N R16E S33 Comment
  UCD105490  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  CAS-BOT-BC200869  Astragalus whitneyi var. confusus D. B. Dunn; B. J. Cox 1971-6-2 17770 Lassen Approx. 12 mi. S. of Adin on Calif. Hwy. 139 1371 Comment
  CAS-BOT-BC200876  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susnaville. Perkin's Ranch 2225 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-BC198724  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  OBI75877  Athysanus pusillus Anthony Baniaga 2011-6-29 399 Lassen Lassen Natl Forest. Fredonyer Pass, S of Willard ck. Fredonyer Pass quad T29N R10E sec 14 NW of SE 1500 Comment
  UC295904  Atriplex argentea H. M. Hall 1925-8-31 12215 Lassen Amedee Comment
  CAS-BOT-BC170276  Atriplex confertifolia C. B. Wolf 1931-9-5 1279 Lassen Honey Lake Valley, 1/2 mile from Medee R.R. Station on road to Doyle. 1219 Comment
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC172657  Atriplex gardneri var. falcata Gary Schoolcraft 1983-6-20 1012 Lassen Mud Flat 1341 Comment
  UC768839  Atriplex gardneri var. falcata R. F. Hoover 1940-10-5 4677 Lassen alkali plain s Secret Valley; s of Secret Valley Comment
  SEINET515855  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 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
  CHSC65305  Atriplex rosea Vernon H. Oswald; Lowell Ahart 1995-8-14 7174 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  CHSC76273  Atriplex rosea Lowell Ahart; Vernon H. Oswald 1999-9-13 8203 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  RSA518558  Atriplex rosea George K. Helmkamp 1990-9-23 H- 7 Lassen N of Ravendale 1677 Comment
  JEPS117922  Atriplex truncata L. P. Janeway 2008-8-2 9528 Lassen just above the flats along the south side of Rush Creek Modoc Plateau (south side fo Smokey Creek Ranch Road 1.8 km west of the CA-NV line.) 1349 Comment
  CHSC71070  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1998-5-22 9089 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  CAS-BOT-BC106489  Balsamorhiza hookeri David D. Keck; J. Clausen 1935-6-24 3747 Lassen 2 mi. S. of Ravendale, in light sandy clay soil with some rock. 1463 Comment
  CAS-BOT-BC106496  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-13 9363 Lassen Between Susanville and Janesville Comment
  JEPS94113  Balsamorhiza hookeri Vernon H. Oswald and Lowell Ahart 1998-5-22 90889 Lassen Hwy. 36 between Fredonyer Summit and Susanville (0.4 mi. w. of the Susan R. & Bizz Johnston Trail) 1417 Comment
  UC1137703  Balsamorhiza sagittata A. Simontacchi 1940-6-4 802 Lassen 7.0 mi sw of Jacks Lake (Halls Flat); Halls Flat 1828 Comment
  UC1794997  Balsamorhiza sagittata R. K. Brummitt 1998-5-17 19900 Lassen 2 km W of Susanville on Rte. 36 1350 Comment
  CAS-BOT-BC16435  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49464 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC16436  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49177 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  CAS-BOT-BC16438  Barbarea orthoceras A. M. Vollmer; L. Beane 1953-7-1 72 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur. 1554 Comment
  CDA43005  Barbarea orthoceras L. Ahart, John Dittes 2008-6-2 14949 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. Comment
Read comments
Oct 5 2019
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  JEPS121240  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18843 Lassen West margin of duckfield, about 40 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley. Comment
  POM172679  Beckmannia syzigachne Franklin P. Nutting 1894-7-6 s.n. Lassen Dixey Valley Comment
  UCD56782  Beckmannia syzigachne Leo Whitney 1934-8-6 2210 Lassen Honey Lake Valley. Bank of Susan River. 1371 Comment
  UCD56798  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  NY526245  Betula glandulosa B. M. Bartholomew 1988-7-22 4500 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  CHSC58833  Betula pumila var. glandulifera Vernon H. Oswald; Lowell Ahart 1992-7-16 5116 Lassen On Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  CHSC112972  Bidens cernua Lowell Ahart; John Dittes 2013-7-23 18897 Lassen Along the south margin of the levee road, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC95177  Bidens cernua Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 678 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET4176271  Bistorta bistortoides C. G. Gulling 1905-1 1548 Lassen Big Meadows 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
  CHSC68732  Blepharipappus scaber Vernon H. Oswald; Lowell Ahart 1997-5-27 8484 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  JEPS114752  Blepharipappus scaber Lowell Ahart, John Dittes 2008-6-19 14876 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  POM204103  Blepharipappus scaber J. T. Howell 1934-6-10 11894 Lassen Horse Lake Comment
  RSA17718  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen South end of Secret Valley Comment
  UC1119057  Blepharipappus scaber A. Simontacchi 1940-7-8 5575 Lassen 5.1 mi s of Jelly Camp (Halls Flat); Halls Flat 1699 Comment
  UC773892  Blepharipappus scaber L. R. Short 1936-6-10 S- 415 Lassen Burgess Spr. Exp. Range 1798 Comment
  UC894096  Blepharipappus scaber C. L. Hitchcock 1940-5-26 6612 Lassen ca 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  SEINET7379359 Image available Blepharipappus scaber subsp. scaber J. A. Young 1982-6-9 s.n. Lassen Myers Ranch, Adin 1372 Comment
  CAS-BOT-BC16826  Boechera Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16325 Lassen Along southern shore of Eagle Lake. Comment
  JEPS53091  Boechera pauciflora Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  CHSC13946  Boechera pinetorum M. S. Taylor 1974-7-12 313 Lassen Above road bank by Clear Lake in Lassen National Forest. Comment
  CHSC75356  Boechera puberula Vernon H. Oswald 1999-5-7 9725 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  CHSC117221  Boechera rectissima Lowell Ahart; John Dittes 2016-6-7 20981 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. 1289 Comment
  CAS-BOT-BC14712  Boechera repanda John Thomas Howell; Gordon H. True 1973-8-1 50218 Lassen Sierra Nevada. Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2164 Comment
  RSA0090999  Boechera retrofracta Dean Wm. Taylor 2009-5-21 20602 Lassen Susanville; Susanville Peak, easterly flank along logging road trending northward from Susanville Indian Rancheria. 1600 Comment
  UC1126590  Boechera retrofracta A. Simontacchi 1940-5-13 699 Lassen 7.5 mi wsw Cone Ranch Hdq.; Lassen National Forest, Halls Flat Quad. 1920 Comment
  CAS-BOT-BC25705  Boechera sparsiflora John Thomas Howell; Gordon H. True 1973-7-31 50064 Lassen Sierra Nevada. Diamond Range. Road from Janesville to Thompson Peak. 1783 Comment
  CHSC40528  Boechera sparsiflora J. D. Jokerst 1983-5-30 1797 Lassen West of Ash Valley along the SW side of the road to Knox Mt ca 1 mile north of its junction with the road that connects Aden and Madeline. Comment
  UC1137672  Boechera sparsiflora L. R. Short 1936-6-1 S- 354 Lassen Burgess Spr. Exp. Range Lassen Forest 1859 Comment
  UC585227  Boechera sparsiflora E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1761 Lassen nw side of summit of ridge e Red Rock 1828 Comment
  CAS-BOT-BC25677  Boechera sparsiflora H. D. Ripley; R. C. Barneby 1944-3-29 5948 Lassen South of Constantia. 1447 Comment
  CAS-BOT-BC25706  Boechera sparsiflora Reed Clark Rollins; Kathryn W. Rollins; Aileen Roads 1983-7-5 83226 Lassen Plumas National Forest. Above Laufman Ranger Station. 4.5 miles east of US Highway 395. Comment
  UC506904  Boechera suffrutescens George A. Fischer and Irwin H. Johnson 1933-7-14 F- 273 Lassen Lassen Forest 1722 Comment
  RSA41170  Boisduvalia glabella Robert F. Hoover 1940-9-21 4602 Lassen 4 miles west of Susanville Comment
  POM254312  Boisduvalia macrantha Alice Eastwood, John Thomas Howell 1940-6-11 7973 Lassen Big Valley Mountains. Comment
  CHSC76305  Bolboschoenus maritimus subsp. paludosus Lowell Ahart; Vernon H. Oswald 1999-9-13 8221 Lassen On the edge of a flooded field, just south of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  JEPS95898  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1999-9-13 8221 Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  JEPS18771  Brickellia microphylla var. microphylla R. F. Hoover 1940-10-5 4674 Lassen pass between Shaffer Mt. and Warren Peak Shaffer Mt. 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
  RSA712894  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  UC1134039  Brodiaea coronaria subsp. coronaria A. Simontacchi 1940-6-15 871 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat 1767 Comment
  HSC82193  Brodiaea coronaria subsp. coronaria Thomas W. Nelson, Jane P. Nelson 1980-7-6 6047 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  SEINET201569  Brodiaea coronaria subsp. coronaria Arthur Cronquist 1959-6-18 8485 Lassen 5 miles south of Adin Comment
  UC60846  Bromus M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mountains Comment
  CHSC110715  Bromus briziformis Dean Wm. Taylor 2005-6-29 19380 Lassen Modoc Plateau. Piute Creek, 3 miles west from western edge Susanville. 1310 Comment
  SEINET222548 Image available Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8909 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak 28 km east of Ravendale and 22.5 km airlin 1680 Comment
  UC1037124  Bromus carinatus var. carinatus Leo Whitney 1935-6-16 3274 Lassen 15 mi w of Eagle Lake (Lassen National Forest, Crater Lake); Lassen National Forest, Crater Lake 2133 Comment
  UC1130972  Bromus carinatus var. carinatus H. P. Hagge 1929-8-12 29 Lassen Logan Mountain 1828 Comment
  UC1136818  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1820 Comment
  CAS-BOT-BC149158  Bromus carinatus var. marginatus John Thomas Howell; Gordon H. True 1973-8-1 50199 Lassen Sierra Nevada. Ca. 3 miles southeast of Disamond Mountain. East slope of Diamond Range south of Susanville. 2194 Comment
  UCD59099  Bromus carinatus var. marginatus R. Tofsrud 1947-7-1 224 Lassen Between Ravendale and Thermo. 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
  RSA715540  Bromus ciliatus var. ciliatus L. Ahart 2005-6-1 11865 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CAS-BOT-BC155941  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1024828  Bromus racemosus Leo Whitney 1935-6-12 3232 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10 Lassen National Forest; , Fruit Grower's Supply Company, Camp Comment
  CAS-BOT-BC161419  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49199 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  CDA1862  Bromus tectorum A. A. Beetle 1941-6-28 2796 Lassen Rte. 36, 10 miles west of Chester. 0 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
  UC1142960  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Westwood Junction Lassen National Forest 1737 Comment
  JEPS120868  Callitriche heterophylla Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18750 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD149989  Callitriche palustris William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  CHSC118825  Calochortus leichtlinii L. P. Janeway; B. Castro 2017-7-2 12339 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
  CAS-BOT-BC487966  Calochortus leichtlinii R. Carter 1967-4-27 552 Lassen 1.75 mi w of Eagel Lake Biology Station 1584 Comment
  JEPS124668 Image available Calochortus leichtlinii Laurel Loeblich 1964-6-30 59 Lassen Highway 139 8.7 miles north of Susanville. Comment
  OBI75876  Calochortus leichtlinii Anthony Baniaga 2011-6-29 398 Lassen Lassen Natl Forest. Fredonyer Pass, S of Willard ck. Fredonyer Pass quad T29N R10E sec 14 NE of NE 1528 Comment
  CAS-BOT-BC483437  Calochortus macrocarpus Amy Rhinehart 1895-6-1 s.n. Lassen Unspecified Comment
  HSC63946  Calyptridium monospermum Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  UC699726  Calyptridium umbellatum Farris Farris 1936-6-15 Lassen Eagle Lake road 1676 Comment
  SEINET230279  Calystegia polymorpha Noel H. Holmgren, Patricia K. Holmgren 1980-7-9 9581 Lassen Surprise Valley 23.7 km south of Fort Bidwell 1400 Comment
  CAS-BOT-BC497000  Camassia quamash Luella Bass 1980-6-14 EV 2 - 80 Lassen Elysian Valley Comment
  CHSC66238  Camelina microcarpa Vernon H. Oswald; Lowell Ahart 1996-6-24 7881 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the NE corner of the meadow (ca. 0.1 mi E of where Papoose Creek leaves the N end of the meadow). 1636 Comment
  JEPS96126  Camelina microcarpa Vernon H. Oswald and Lowell Ahart 1996-6-24 7881 Lassen 2.5 mi s of Eagle Lake (0.5 mi e of Eagle Lake Road (A1), at ne corner of Papoose Meadows, (0.1 mi e of where Papoose Creek leaves the n end of meadow)); Modoc Plateau, Papoose Meadows 1636 Comment
  CHSC4969  Camissonia R. Carter 1967-6-23 540 Lassen Along rd to Murrer's Meadow. 1584 Comment
  NY850416  Camissonia andina N. H. Holmgren 1980-7-5 9521 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
  POM38357  Camissonia andina Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  HSC69078  Camissonia boothii subsp. alyssoides Gary Schoolcraft 1980-5-16 234 Lassen N of Kiln on Wendel Hwy. 1280 Comment
  NY850967  Camissonia boothii subsp. alyssoides A. Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  NY850975  Camissonia boothii subsp. alyssoides Mrs. C. C. Bruce 06 1898 2139 Lassen Shumway Comment
  NY850976  Camissonia boothii subsp. alyssoides W. W. Eggleston 1911-7-7 7176 Lassen Secret Valley 1330 Comment
  UCR183189  Camissonia boothii subsp. alyssoides Jim Andre, G. L. Clifton 1993-5-28 7710 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  RSA38439  Camissonia claviformis subsp. cruciformis P. A. Munz 1947-5-19 11873 Lassen 19 miles south of Ravendale. 1341 Comment
  RSA186551  Camissonia parvula Peter H. Raven 1962-5-28 17870 Lassen Along U.S. Highway 395, 32 miles south of Milford Comment
  UC107616  Camissonia pubens T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  NY852083  Camissonia tanacetifolia G. Schoolcraft 1997-7-2 2607 Lassen On Mud Flat west of Highway 395 1341 Comment
  CAS-BOT-BC160833  Camissonia tanacetifolia subsp. quadriperforata James Jokerst 1983-5-31 1787 Lassen Near Madeline Plains 1583 Comment
  CAS-BOT-BC160860  Camissonia tanacetifolia subsp. tanacetifolia Margaret Williams; Steven Williams 1974-7-26 74 -L-24 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC160863  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-7-8 12505 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC160867  Camissonia tanacetifolia subsp. tanacetifolia Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16364 Lassen Roadside along California Highway 139, about 1 mile N of Grasshopper Valley Comment
  UC1137752  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  CAS-BOT-BC37244  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49478 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC37252  Cardamine breweri Louella Bass 1980-5-22 s.n. Lassen Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville. Comment
  CHSC61025  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1993-8-3 5743 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. At the SW edge of the swamp. 1932 Comment
  RSA74138  Cardamine pulcherrima Milo S. Baker 1952-5-23 12430 Lassen Hwy. 36, 1/2 mi West of Fredonyer Pass 1753 Comment
  CAS-BOT-BC18287  Carex John Thomas Howell; Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road, south of Susanville. 1584 Comment
  CHSC58858  Carex angustata Vernon H. Oswald; Lowell Ahart 1992-7-16 5115 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  SEINET7550662 Image available Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flats; Black Mountains Experimental Forest. Poison Lake 7.5' quad. 1767 Comment
  UC1537643  Carex athrostachya Gordon H. True Jr. 1939-6-15 994 Lassen Bullard Lake, W of Grasshopper Valley Comment
  UC2031877  Carex athrostachya Nick Otting and Dick Brainerd 2003-7-17 702 Lassen Cascade Mountains, Susan River, 2 air miles west of Susanville. Comment
  CHSC77241  Carex aurea G. Schoolcraft 1998-7-7 2755 Lassen Along Pine Creek NE. of Fredonyer Peak. 1645 Comment
  CAS-BOT-BC34933  Carex densa T. C. Fuller 1966-7-20 14963 Lassen South side of road to Pittville, 5.4 miles west of Little Valley Post Office. NW Lassen County. Comment
  CHSC65136  Carex disperma Vernon H. Oswald; Lowell Ahart 1995-7-24 7145 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. 1905 Comment
  CAS-BOT-BC19779  Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvery Valley. Comment
  HSC48337  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen 2 mi. N of Westwood Comment
  POM80614  Carex douglasii Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC19777  Carex douglasii Clarence Roy Quick 1962-6-17 62 -24 Lassen Swains hole, a man made pond in sagebrush flat south of Blacks Mountain Experimental Station. 1554 Comment
  CAS-BOT-BC20166  Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  UC1133496  Carex filifolia var. erostrata A. Simontacchi 1940-5-17 729 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1133497  Carex filifolia var. erostrata A. Simontacchi 1940-5-28 789 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1609197  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  CAS-BOT-BC34001  Carex filifolia var. filifolia Louella Bass 1973-4-13 EV 14 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC34002  Carex filifolia var. filifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49194 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC21303  Carex fracta John Thomas Howell; Gordon H. True 1973-7-31 50047 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  JEPS118163  Carex geyeri Dean W. Taylor 2009-5-20 20601 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
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May 18 2013
  CAS-BOT-BC22275  Carex hassei John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49477 Lassen Elysian Valley, west of Janesville. 1325 Comment
  UC1609196  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  JEPS120111  Carex integra Lowell Ahart, John Dittes 2012-7-9 18299 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
  HSC103653  Carex lenticularis var. limnophila Thomas W. Nelson, Jane Nelson 1985-8-10 8010 Lassen Along north side of Silver Lake 1829 Comment
  HSC103673  Carex lenticularis var. lipocarpa Thomas W. Nelson, Jane Nelson 1985-8-10 8023 Lassen Margin of pond along south side of lava flow on west side of Silver Lake 1829 Comment
  HSC46422  Carex mariposana D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19178 Lassen Harvey Valley near Cone Springs Comment
  UC1136940  Carex microptera George A. Fischer, Irwin H. Johnson 1933-7-12 F 237 Lassen Patterson Flat Lassen Forest 1737 Comment
  CHSC66271  Carex nebrascensis Vernon H. Oswald; Lowell Ahart 1996-6-24 7882 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. Meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  CHSC85989  Carex nebrascensis L. P. Janeway 2003-7-24 7914 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  HSC103614  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8005 Lassen Along north side of Silver Lake 1829 Comment
  HSC103619  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8014 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC119043  Carex pellita George Wilson Gillett 1957-7-26 906 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CHSC61593  Carex pellita Arthur C. Barrett 1915-8-18 36 Lassen Plumas National Forest. Along stream near Laufman Sta. 1508 Comment
  CHSC89747  Carex petasata L. P. Janeway 2004-6-26 8153 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
  UC1755280  Carex petasata Dean W. Taylor 2007-6-14 20126 Lassen stream channel draining Lower Gooch Valley into Gordon Valley [dry on this date in a very dry year, stream channel with fluvial geomorphology indicating flow in spring on average] 1828 Comment
  JEPS107834  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  JEPS118273  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 17477 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1542937  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen near Stone Ranch; Eagle Lake 1554 Comment
  CAS-BOT-BC118615  Carex raynoldsii George Wilson Gillett 1957-7-29 948 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  CAS-BOT-BC118029  Carex rossii John Thomas Howell; Gordon H. True 1959-9-23 s.n. Lassen N end of Juniper Lake, Lassen Park. 2057 Comment
  JEPS118165  Carex rossii Dean W. Taylor 2009-5-20 20604 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  CAS-BOT-BC118229  Carex scopulorum var. bracteosa John Thomas Howell 1934-6-14 12162 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UC2031891  Carex sheldonii Nick Otting 2003-7-14 674 Lassen Modoc Plateau, Willow Creek at Willow Creek Campground, 14 air miles south-southeast of Adin. Comment
  CHSC96453  Carex simulata Gordon Leppig; J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  UC1108042  Carex specifica E. B. Copeland 1932-8-15 Lassen woods between Hat Lake and Summit Lake; Mount Lassen 1981 Comment
  CAS-BOT-BC116606  Carex subfusca Clare B. Hardham 1969-8-28 17440 Lassen West of Janesville. Comment
  JEPS28384  Carex subfusca George W. Gillett 1957-7-26 911 Lassen lake shore near ne arm of Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  CAS-BOT-BC115282  Carex utriculata W. B. Cooke; V. G. Cooke 1976-10-7 53193 Lassen Butte Lake, Near lake shore, Lassen Volcanic National Park. Comment
  HSC103651  Carex utriculata Thomas W. Nelson, Jane Nelson 1985-8-10 8009 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC115062  Carex vesicaria George Wilson Gillett 1957-7-22 879 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. 1850 Comment
  CAS-BOT-BC114881  Carex whitneyi John Thomas Howell 1959-9-23 s.n. Lassen North end of Juniper Lake, Lassen Park. 2057 Comment
  HSC48217  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19237 Lassen 2 mi. N of Westwood Comment
  RSA298353  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  CAS-BOT-BC114884  Carex whitneyi Hans Leschke 1958-8-15 s.n. Lassen Trail Butte-to Snag Lake near Lava beds. 1920 Comment
  CHSC71100  Castilleja angustifolia Vernon H. Oswald; Lowell Ahart 1998-5-22 9108 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  CHSC93559  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. Comment
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Oct 20 2009
  JEPS23795  Castilleja angustifolia Rimo Bacigalupi with Lincoln Constance 1959-7-16 7140 Lassen 0.25 mi s U.S. Hwy. 395 junction with road Smoke Creek (beside U.S. Hwy 395) 1341 Comment
  JEPS62334  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen ca 6 mi n Honey Lake 1280 Comment
  JEPS79146  Castilleja angustifolia L. R. Heckard with R. Bacigalupi 1980-6-11 5249 Lassen about 8 mi ne Litchfield (along U.S. Hwy 395) 1371 Comment
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  CHSC67068  Castilleja applegatei Willis Ball 1969-6-20 20 Lassen Found approx. 2 mls. down from Dean's Meadow going towards 5 pts. 1828 Comment
  UC1483848  Castilleja applegatei G. Schoolcraft 1979-7-5 123 Lassen se of Observation Mountain Lookout (top of Observation Mountain); Observation Mountain 2407 Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC249622  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-9 12527 Lassen Harvey Valley Comment
  CHSC30598  Castilleja applegatei subsp. pinetorum Marc Held 1972-6-29 19 Lassen 3 miles from Dean's Meadow, towards 5 points, off road side. Comment
  CHSC5077  Castilleja applegatei subsp. pinetorum R. Clicquennoi 1967-6-30 27 Lassen W cent. shore of Eagle Lake, 1/2 mi s of Pelican Point. 1554 Comment
  JEPS117583  Castilleja applegatei subsp. pinetorum Lowell Ahart, John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  UC1184064  Castilleja applegatei subsp. pinetorum Jean Langenheim 1957-6-26 4394 Lassen nw Said Valley Said Valley (e Lassen County) Comment
  JEPS28820  Castilleja arachnoidea Frances Payne 1929-7-12 83 Lassen between Camp 1 and Lost Lake (s end of Warner Range, e slope); Warner Range 2286 Comment
  JEPS94529  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1997-6-24 8642 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CHSC60921  Castilleja campestris subsp. campestris Vernon H. Oswald; Lowell Ahart 1993-7-8 5644 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 22N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  CHSC99527  Castilleja campestris subsp. campestris Lowell Ahart; John Dittes 2008-6-20 14978 Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1137570  Castilleja campestris subsp. campestris A. Simontacchi 1940-6-30 913 Lassen s shore Government Lake; Lassen National Park, Halls Flat Quad. 1524 Comment
  UCD55264  Castilleja chromosa Ellen Dean 2006-5-15 3062 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  CHSC107998  Castilleja lacera Lowell Ahart; John Dittes 2011-6-20 17500 Lassen In ditch along the north side of the road, about 40 yards east of the stream about 40 yards east of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC117183  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 21021 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC1567405  Castilleja lacera G. Schoolcraft 1989-6-5 1895 Lassen s of Adin (intersection of Hwy 139 and A2) 1341 Comment
  HSC63893  Castilleja linariifolia Teresa Prendusi 1980-7-1 Lassen McCoy Flat, 5 mi. E of northern tip of Eagle Lake 1646 Comment
  SEINET14062605  Castilleja miniata C. G. Gulling 1905-1 1568 Lassen Big Meadows. Comment
  CAS-BOT-BC244888  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen meadows foot of Lassen Butte. Lassen Butte Region Comment
  POM44361  Castilleja miniata Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CHSC81564  Castilleja minor subsp. minor Vernon H. Oswald 2001-9-26 10058 Lassen Dakin Unit of Honey Lake Wildlife Area. 1219 Comment
  JEPS57496  Castilleja minor subsp. minor L. R. Heckard 1968-8-12 2117 Lassen just n Milford (along shore of Honey Lake); Honey Lake 1310 Comment
  CAS-BOT-BC241005  Castilleja pilosa Margaret Williams; Lyn Wise 1976-5-31 76- 22 -1 Lassen Near Nervine Aero Service, E of Beckwourth 1524 Comment
  JEPS76162  Castilleja pilosa T. I. Chuang with Fei-Mei Chuang 1977-7-25 7661 Lassen 17.6 mi w Madeline 1600 Comment
  UC1483790  Castilleja pilosa Mary Meyer 1980-7-1 Lassen Champs Flat 1677 Comment
  CHSC113090  Castilleja tenuis Lowell Ahart; John Dittes 2013-7-22 18840 Lassen West margin of a duck field, about 30 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC66263  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1996-6-24 7841 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
  CHSC99526  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-20 14944 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
  UC1143036  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen National Forest 1743 Comment
  UC717969  Castilleja tenuis David D. Keck 1944-6-8 5444 Lassen 2 mi e Westwood (near Mountain Meadows Reservoir) 1524 Comment
  RSA0034899  Caulanthus inflatus Bob Thille 1964-3-14 Lassen 3 miles south of Atola, Highway 395. 883 Comment
  CAS-BOT-BC39554  Caulanthus major G. Schoolcraft 1981-7-7 591 Lassen Northwest of Susanville Peak. 2011 Comment
  CHSC80621  Caulanthus major var. nevadensis Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolscraft 2001-6-2 10036 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountin from the end of a $WD road. 1828 Comment
  NY608460  Caulanthus major var. nevadensis N. H. Holmgren 1978-6-11 8923 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  RSA0035394  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2008-6-20 14920 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC48706  Ceanothus cordulatus John Thomas Howell 1974-7-9 50480 Lassen Coniferous forest between Susanville and SW end of Eagle lake 1828 Comment
  HSC26519  Ceanothus cuneatus J. P. Smith, J. O. Sawyer 1972-5-6 5242 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  CAS-BOT-BC52047  Ceanothus prostratus A. M. Vollmer; L. Beane 1953-7-1 88 Lassen Along Halls Flat Road, beinning 6 miles West of Susanville to McArthur 1554 Comment
  CAS-BOT-BC52052  Ceanothus prostratus Milo S. Baker 1894-7-30 s.n. Lassen Near Silver Lake Comment
  JEPS118451  Ceanothus prostratus Lowell Ahart, John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  RSA122353  Ceanothus prostratus C. B. Bradshaw 1939-5-27 233 Lassen S end Black Mt. EF Plot 39-1, s15. 1753 Comment
  CHSC23565  Ceanothus velutinus W. O. Baum 1971-6-28 46 Lassen E slope of Gallatin Peak. 1950 Comment
  CHSC5047  Ceanothus velutinus L. B. Barlow 1967-7-1 64 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road. 1554 Comment
  CAS-BOT-BC277001  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen E. side of Hwy 395 to Madelaine, 1.9 mi. n. of Termo Comment
  RSA157739  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Hwy. 395 to Madelaine, 1.6 miles north of Termo Comment
  CDA7341  Centaurea squarrosa Loring White Jul 1950 Lassen Kramer Ranch, Big Valley, just over line Modoc-Lassen. 0 Comment
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May 19 2009
  CAS-BOT-BC281203  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen W side of Highway 395, 1.7 miles S of Doyle Comment
  UC1533151  Centaurea virgata subsp. squarrosa G. Schoolcraft 1986-7-28 1666 Lassen about 3.5 mi SW of Nubieber (along Hwy 299) 1402 Comment
  SEINET13331057 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  UCD130124  Centaurea virgata subsp. squarrosa Dan Marcum 1980-8-24 s.n. Lassen Big Valley. 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
  CAS-BOT-BC388153  Cerastium fontanum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49480 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC23531  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  CAS-BOT-BC400182  Ceratophyllum demersum B. Trowbridge 1977-8-9 5986 Lassen Water of Willow Creek near Rice Canyon northeast of Susanville 1524 Comment
  UC1523792  Cercis occidentalis Gary Schoolcraft 1981-6-9 447 Lassen w Nubieber 1280 Comment
  JEPS126473  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -063 Lassen Take 139 north to Fredonyer Peak. Comment
  CHSC23520  Cercocarpus ledifolius var. ledifolius Wayne O. Baum 1971-6-28 71 -47 Lassen E. slope of Gallatin Peak. 2103 Comment
  UC773879  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  CHSC48134  Chaenactis douglasii var. douglasii Vernon Oswald 1986-6-15 2116 Lassen Hwy 139, 8.6 mi ne of Susanville. 1615 Comment
  UC1136776  Chaenactis douglasii var. douglasii L. R. Short and Wm. Gansberg 1946-7-9 S- 480 Lassen Burgess Spring Experimental Range Lassen Forest, Burgess Spring Experimental Range 1804 Comment
  UC30985  Chaenactis douglasii var. douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3410 Lassen Amedee Honey Lake Valley Comment
  UC1567442  Chaenactis stevioides G. Schoolcraft 1989-5-31 1886 Lassen about 4 mi n of Wendel Rd. (along Skedaddle Ranch Road) 1493 Comment
  UC585132  Chaenactis xantiana E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1770 Lassen sw facing slope of ridge above Red Rock 1524 Comment
  CAS-BOT-BC279643  Chaenactis xantiana H. D. Ripley; R. C. Barneby 1943-6-15 5754 Lassen N.-E. of Litchfield 1234 Comment
  UC1542162  Chamaesaracha nana Paul Covel 1986-6-6 Lassen e of Chester (Lake Almanor dike); Lake Almanor Comment
  UC1776692  Chamaesaracha nana G. Schoolcraft 1999-6-29 2849 Lassen E. edge of Madeline Plains about 9 miles NE of Ravendale, CA 1615 Comment
  CHSC113085  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18857 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121298  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-7-22 18847 Lassen W margin of duck field, about 30 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA0045636  Chamomilla suaveolens 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
  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
  UC1745664  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CAS-BOT-BC473049  Chenopodium desiccatum Margaret Williams; Steven Williams 1974-7-26 74 -L-36 Lassen Sierra Nevada. Burned area near Hallelujah Junction, W of Hwy 395 and S of Hwy 70 1493 Comment
  SEINET4171909  Chenopodium leptophyllum M. J. Williams 1974-7-26 74 -L-36 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  CDA23382  Chenopodium leptophyllum M. K. Bellue 1938-8-1 Lassen Butte Lake. 0 Comment
  CHSC60892  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1993-7-8 5659 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
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Nov 1 2014
  POM77432  Chimaphila menziesii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC23506  Chrysolepis sempervirens Wayne O. Baum 1971-7-8 71 -64 Lassen E. slope of Gallatin Peak. 1920 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
  SJSU3013  Chrysothamnus viscidiflorus J. W. Tilden 1967-8-23 1772 Lassen Litchfield, southeastern Lassen County 1402 Comment
  CHSC7637  Chrysothamnus viscidiflorus subsp. puberulus Beverley J. Wise 1969-9-29 15 Lassen 4.5 mi. north of Susanville on Hwy 139. Roadside. 1371 Comment
  CAS-BOT-BC105902  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1987-9-9 1776 Lassen Ash Valley RNA just S. of T in road 1554 Comment
  OBI5967  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 mi from Bieber on the road to Alturas 1268 Comment
  UC1776665  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1994-9-13 2430 Lassen Just above gate along road to Fredonyer Pk. lookout 2255 Comment
  CAS-BOT-BC162753  Chylismia claviformis subsp. cruciformis G. H. True 1937-7-10 791 Lassen Skeedaddle Comment
  CAS-BOT-BC162757  Chylismia claviformis subsp. cruciformis Philip A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravensdale, on Highway 395 1341 Comment
  POM35787  Cichorium intybus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SD61012  Cirsium andersonii Darley F. Howe 1964-8-1 3911 Lassen 3.3 miles on ridge road above Harvey Creek, Warner Mountains; Modoc National Forest. 1950 Comment
  CAS-BOT-BC284385  Cirsium arvense John Thomas Howell; Gordon H. True 1973-8-1 50225 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville, Sierra Nevada 2133 Comment
  CDA1125  Cirsium canescens T. C. Fuller 1962-8-28 9479 Lassen 0.25 mi n. of Termo, Madelaine Plains; roadside, Hwy 395 to Madelaine. 0 Comment
  CAS-BOT-BC278008  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8307 Lassen Willow Creek near Hayden Hill 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-BC278004  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen Hwy. 395, 7 miles north/road to Karlo Comment
  CAS-BOT-BC278088  Cirsium douglasii var. breweri Alice Eastwood; John Thomas Howell 1940-6-15 8306 Lassen Willow Creek near Hayden Hill Comment
  CDA1258  Cirsium inamoenum J. R. Keck Jr., D. L. Haws 1980-7-22 PDR# 330194 Lassen Ravendale, BLM rangeland. Comment
  JEPS59279  Cirsium occidentale var. californicum W. L. Jepson 1918-8-4 7807 Lassen Horse Lake 1554 Comment
  JEPS59280  Cirsium occidentale var. candidissimum W. L. Jepson 1918-8-2 7796 Lassen Honey Lake Valley 1219 Comment
  CAS-BOT-BC285579  Cirsium occidentale var. candidissimum John Thomas Howell 1934-7-11 12563 Lassen Eldridge, 10 miles se. of Fall River Mills Comment
  CAS-BOT-BC280437  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14200 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  JEPS59259  Cirsium scariosum Brown and Wieslander 1922-7-23 91 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  RSA504590  Cirsium scariosum Bruce Bartholomew 1988-6-25 4370 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  RSA186831  Cirsium undulatum T. C. Fuller 1966-7-22 14981 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CDA21727  Cirsium undulatum Lee Wheeler 1965-9-21 Lassen Pitt River Ranch, first road going north west of Bailey Creek, first old vacant ranch on left side of road, 18 miles west of Termo. 0 Comment
  CHSC23510  Cirsium vulgare Wayne O. Baum 1971-7-6 71 -56 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC439004  Cistanthe monosperma C. L. Hitchcock 1940-5-26 6608 Lassen Ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1371 Comment
  CAS-BOT-BC233914  Cistanthe umbellata Carl B. Wolf 1929-9-1 3788 Lassen Mt. Lassen National Park, between Grassy and Snag Lakes Comment
  CAS-BOT-BC233918  Cistanthe umbellata D. B. Dunn; B. J. Cox 1971-6-2 17792 Lassen 6 mi. N. of Halleluja Jct. on U.S. Hwy 395 1402 Comment
  LA47494  Clarkia gracilis subsp. albicaulis Clare B. Hardham; 1961-6-16 7485 Lassen Gold Run Creek, S of Susanville Comment
  CAS-BOT-BC172038  Clarkia gracilis subsp. gracilis Louella Bass 1973-5-29 EV 79 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC66393  Clarkia gracilis subsp. gracilis Vernon H. Oswald; Lowell Ahart 1996-6-17 7792 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  LA202501  Clarkia gracilis subsp. gracilis Brian Le Neve; 1996-7-4 84 Lassen between Lake Almanor and Susanville on State Highway 36 Comment
  CHSC91195  Clarkia lassenensis Lowell Ahart; John Dittes 2005-6-2 11951 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction. 1512 Comment
  NY999400  Clarkia lassenensis N. H. Holmgren 1980-7-4 9517 Lassen Observation Peak, south slope of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  CAS-BOT-BC164866  Clarkia rhomboidea Louella Bass 1973-5-29 EV 63 Lassen Elysian Valley 1325 Comment
  UC773910  Clarkia rhomboidea L. R. Short, J. Warren 1936-6-23 S- 448 Lassen Burgess Spring Experimental Range Lassen Forest 1798 Comment
  SEINET5336402  Claytonia perfoliata subsp. intermontana J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin CA. Comment
  CAS-BOT-BC440042  Claytonia perfoliata subsp. perfoliata Louella Bass 1973-4-23 25 Lassen Elysian Valley. 1325 Comment
  UC2013401  Claytonia rubra Debra Valov 2011-6-16 1113 Lassen Bieber; off County A2 c. 8 km east of Highway 299. Comment
  CHSC99500  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2008-6-20 14910 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS94123  Claytonia rubra subsp. depressa Vernon H. Oswald and Lowell Ahart 1998-5-22 9124 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  CHSC108022  Claytonia rubra subsp. rubra Lowell Ahart; John Dittes 2011-6-20 17486 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC34942  Claytonia rubra subsp. rubra P. Fehr 1974-4-24 4 Lassen Ca. 1.75 mi n of junction of Cherry Terrace and Piute Creek, Susanville. 1219 Comment
  CHSC7734  Claytonia rubra subsp. rubra Beverly J. Wise 1969-4-29 81 Lassen 3.4 mi. north of Susanville on Hwy 139 at the junction with Round Valley Road. 1341 Comment
  SBBG12321  Claytonia rubra subsp. rubra A. I. Richardson 1961-5-30 6 Lassen rd S of Eagle Lake 1402 Comment
  UC452681  Claytonia umbellata Milo S. Baker 1890-1 Lassen Milford Comment
  NY222826  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen East end of Skedaddle Mtns. near stateline. Comment
  UC1567389  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen e end Skedaddle Mtns. (near stateline) 1493 Comment
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Aug 12 2008
  RSA657118  Cleomella hillmanii G. L. Clifton 1995-5-24 34202 Lassen About 3/4 miles north of Calneva Lake. 1220 Comment
  UC1587089  Cleomella parviflora G. Schoolcraft 1991-7-22 2178 Lassen s of Smoke Creek Road (just w of CA/NV line) 1341 Comment
  CHSC77207  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  JEPS83689  Cleomella plocasperma Staria S. Vanderpool and Richard Vanderpool 1986-6-8 1236 a Lassen 0.5 mi w Wendel (on paved county road) 1196 Comment
  NY242079  Cleomella plocasperma R. F. Hoover 1940-9-29 4642 Lassen Litchfield. Comment
  RSA739646  Cleomella plocasperma L. P. Janeway, Linus Gog 2008-8-2 9530 Lassen Modoc Plateau just above th flats along the S side of Rusch Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  CHSC116917  Collinsia parviflora J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  UC1137686  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1737 Comment
  UC1143004  Collinsia parviflora August L. Hormay 1934-5-9 Lassen Lassen Nation Forest, Black Mountain Headquarters Black Mountain Headquarters; Lassen Nation Forest, Black Mountain Headquarters 1706 Comment
  UC1143037  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1737 Comment
  UCD55268  Collinsia parviflora Ellen Dean 2006-5-15 3066 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  POM75605  Collomia grandiflora Marcus E. Jones 1897-6-26 10168 Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1537483  Collomia grandiflora Gordon H. True Jr. 1938-7-9 906 Lassen near Horse Lake 1524 Comment
  SEINET12319536  Collomia grandiflora N. E. Heiken 1978-1 87 Lassen Lower Dry Lakes, E of Eagle L 1573 Comment
  JEPS94551  Collomia linearis Vernon Oswald and Lowell Ahart 1997-6-24 8621 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville on n side of Diamond Mountain at an impoundment on edge of Forest Rd 29N43 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 Comment
  UC23615  Collomia linearis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  JEPS121063 Image available Convolvulus arvensis M. L. Wheelis 1964-7-1 123 Lassen HIghway 395, 3 miles north of Hallelulah Junction. Comment
  CAS-BOT-BC286112  Conyza canadensis John Thomas Howell; Gordon H. True 1973-8-1 50154 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC6277  Corallorhiza maculata A. Santos 1946-7-11 Lassen Silver Lake. 1981 Comment
  CHSC77234  Cordylanthus ramosus G. Schoolcraft 1999-8-10 2873 Lassen S. of Doyle Grade about 2.5 mi. w. of Doyle, CA. 1584 Comment
  CAS-BOT-BC212207  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  UC303067  Corydalis caseana subsp. caseana Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC27664  Crepis acuminata Robert A. Schlising 1978-7-15 3317 Lassen SE of Eagle Lake at Dry Lake. 1645 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
  JEPS107982  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
  UC581254  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2214 Lassen just w ridge crest between Willow Creek Valley and Horse Lake 1720 Comment
  UC581282  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2313 Lassen about 1 mi below summit; Black Mountain 1940 Comment
  CHSC36849  Crepis bakeri M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno. Comment
  OBI75880  Crepis bakeri Anthony Baniaga 2011-6-30 404 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1470 Comment
  CAS-BOT-BC376483  Crepis bakeri subsp. cusickii G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-14 2331 Lassen Along road half way between Bogard Ranger Station and Harney Valley 1630 Comment
  CAS-BOT-BC291548  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-7 2203 Lassen Susanville just west of the town on Inspiratin Point Comment
  UC1136841  Crepis monticola L. R. Short and J. Warren 1936-6-23 S- 444 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1839 Comment
  UC581316  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2221 Lassen 6 mi s Ravensdale 1676 Comment
  UC581317  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2218 Lassen 6 mi s Ravensdale 1676 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-BC376460  Crepis occidentalis subsp. pumila James Jokerst 1983-7-23 1868 Lassen Near Madeline Plains 1614 Comment
  HSC81647  Crepis occidentalis subsp. pumila Thomas W. Nelson, Jane P. Nelson 1980-7-6 6031 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  JEPS117488  Crepis occidentalis subsp. pumila Lowell Ahart, John Dittes 2010-7-31 16982 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC290824  Crepis occidentalis subsp. pumila David D. Keck; J. Clausen 1935-6-25 3759 Lassen Susanville 1340 Comment
  CAS-BOT-BC299711  Crocidium Wm. Anderson 1963-4-15 s.n. Lassen Harson Reservoir Comment
  JEPS124754 Image available Croton setiger Laurie Hooker 1965-7-12 113 Lassen On highway 139, 13 miles East of Susanville. Comment
  SJSU10956  Croton setiger V. Hardham 1965-7-12 122 Lassen 12.4 mi NE of Susanville on Hwy 139 1493 Comment
  HSC63831  Crypsis vaginiflora Teresa Prendusi 1980-8-27 Lassen Reservoir just NE of Susanville 1280 Comment
  UCD59985  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  CHSC68849  Cryptantha Vernon Oswald; Lowell Ahart 1997-6-24 8593 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  SBBG19764  Cryptantha affinis C. B. Hardham 1961-6-17 7505 Lassen Baxter Crk, S of Susanville Comment
  CHSC106071  Cryptantha ambigua Lowell Ahart; John Dittes 2010-7-31 17023 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
  CHSC64840  Cryptantha ambigua Vernon H. Oswald 1995-6-26 6918 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  SDSU20524  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 524 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  UC1561921  Cryptantha ambigua Barbara Ertter with Gary Schoolcraft 1987-6-16 7199 Lassen on ne side Honey Lake (saddle on e side of Hot Springs Peak); Skeedaddle Mountains 2194 Comment
  CHSC93236  Cryptantha circumscissa John Dittes; Scott Chamberlain 2004-6-28 1010 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  UC1063881  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  UC577869  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  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
  CHSC75468  Cryptantha humilis Vernon H. Oswald; Lowell Ahart 1999-6-19 9743 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  JEPS109640  Cryptantha intermedia Dean W. Taylor 2002-6-21 18172 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  CHSC92722  Cryptantha torreyana L. P. Janeway 2005-7-3 8449 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
  SEINET10497288  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 267 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET12764836  Cryptantha torreyana var. torreyana Robert L. Johnson, Mikel R. Stevens 2015-7-10 3940 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  CHSC27582  Cryptantha watsonii N. E. Heiken 1978-6-27 54 Lassen SE end of Eagle Lake, near Eagle Lake Field Station. 1554 Comment
  CHSC76827  Cupressus bakeri L. P. Janeway; B. Castro, Loren Gehrung 1999-10-10 6595 B Lassen High cascade Range. Near Eiler Creek between Fraener Peak and Horse Heaven Buttes; about 0.2 mi southeast of Cypress Trailhead in to Thousand Lakes Wilderness Area. 1658 Comment
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May 17 2007
  SEINET7897188  Cuscuta californica var. californica B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11445 Lassen Along Highway 395 at Mud Flat, north of Susanville 1347 Comment
  RSA0049668  Cusickiella douglasii Dean Wm. Taylor 2012-5-15 21198 Lassen Hayden Hill Mine region, stony flats along the county road about 1 mile East of Snyder Waterhold 1722 Comment
  POM180742  Cycladenia humilis A. W. Kramer s.n. Lassen Prospect Peak, Lassen National Park Comment
  RSA0049616  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the crest 1950 Comment
  CDA40496  Cynoglossum occidentale T. C. Fuller 1962-6-13 8997 c Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  CAS-BOT-BC114167  Cyperus squarrosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49512 Lassen Elysian Valley, W of Janesville. 1325 Comment
  UC1037350  Cystopteris fragilis Leo Whitney 1935-5-26 3142 Lassen 10 mi e Adin (lava bluff at Ash Creek) Comment
  UC1522132  Dalea ornata Arnold Tiehm, Raymond Evans, and James Young 1984-6-7 8592 Lassen 7.5 air mi. n.-n.w. of Litchfield (n.w. side of Shaffe Mt.); Shaffe Mt. 1371 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
  CAS-BOT-BC445515  Damasonium californicum M. S. Taylor 1982-6-12 4647 Lassen On n side of Susan River (West Fork), s side of hwy 36, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  JEPS124716 Image available Damasonium californicum B. Corwin 1964-7-1 123 Lassen Under bridges between Bieber and New Bieber on rte. 299. Comment
  JEPS124717 Image available Damasonium californicum M. L. Wheelis 1964-6-30 137 Lassen Second bridge (to the north) between Bieber and New Bieber. Comment
  UCD21047  Damasonium californicum E. Bortiri 2002-7-19 WFC 83 Lassen Bear Valley Reservoir, Rd 35N08 to Long Valley from Hwy 44, Lassen Co. Comment
  POM172479  Danthonia californica var. americana Franklin P. Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  UC1024948  Danthonia californica var. americana Leo Whitney 1935-6-28 3321 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  HSC69064  Danthonia unispicata Gary Schoolcraft 1980-7-28 332 Lassen Meadow E of Tule Mountain. 2043 Comment
  CAS-BOT-BC291777  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  SD51285  Deinandra lobbii Darley F. Howe 1961-8-4 3135 Lassen 11.5 miles east of McArthur on U. S. Highway 299. Comment
  UC1583981  Delphinium andersonii G. Schoolcraft 1990-6-12 2090 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC854041  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  UC9127  Delphinium andersonii Mrs. C. C. Bruce June 1898 2238 Lassen Shumway Comment
  CAS-BOT-BC26673  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen one mile east of Fredonyer Pass on Highway #36, Arid Transition Life Zone 1706 Comment
  CAS-BOT-BC10139  Delphinium menziesii Mrs. H. C. Cantelow 1949-6-11 7 Lassen Summit of Fredonyer Pass Comment
  SEINET10675839 Image available Delphinium nudicaule A. Arthur Heller 1938-6-4 Heller 15149 Lassen More or less shaded gravelly slope in the yellow pine forest one mile east of Fredonyer Pass on Highway #36, Arid Transition Life Zone. 1707 Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  CAS-BOT-BC116052  Delphinium nuttallianum Albert Michael Vollmer; L. Beane 1953-7-1 84 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  HSC27054  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  RSA0011561  Deschampsia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46991 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC194261  Deschampsia cespitosa subsp. cespitosa John Thomas Howell; Gordon H. True 1973-8-1 50230 Lassen Headwaters of Boxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  UC1142950  Deschampsia cespitosa subsp. cespitosa A. L. Hormay 1941-6-23 13 Lassen Burgess Spring Lassen Nt'l Forest, Burgess Spring 1676 Comment
  UC60239  Deschampsia cespitosa subsp. cespitosa M. S. Baker and F. Nutting July 1894 Lassen Eagle Lake 1524 Comment
  CAS-BOT-BC192745  Deschampsia danthonioides Malcom A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  UC1100291  Deschampsia danthonioides Malcolm A. Nobs and S. Galen Smith 1949-7-21 1059 Lassen 4 mi. n. Madeline Comment
  UC1131558  Deschampsia danthonioides Robert W. Gardner 1937-6-20 G- 21 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UC1131560  Deschampsia danthonioides A. Simontacchi 1940-6-8 827 Lassen Halls Flat Ranger Station Lassen Nat'l Forest, Halls Flat Quad., Halls Flat Ranger Sta Comment
  JEPS100347  Descurainia incana Dean W. Taylor 2001-6-28 17817 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  CHSC29947  Descurainia pinnata Robin L. Ondricek 1978-6-19 62 Lassen Around Eagle Lake Field Station. 1554 Comment
  CHSC4810  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected at Eagle Lake Biology Station, e central shore of Eagle Lake. 1524 Comment
  CAS-BOT-BC43165  Descurainia pinnata subsp. brachycarpa A. Simontacchi 1940-6-4 808 Lassen 14.8 miles west of Harvey Mountain Lookout. 1813 Comment
  CAS-BOT-BC43166  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9327 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CAS-BOT-BC43163  Descurainia pinnata subsp. brachycarpa John Thomas Howell 1934-6-10 11902 Lassen 3 miles south of Ravendale. Comment
  UC1143009  Descurainia richardsonii August L. Hormay 1934-5-11 Lassen 2.5 mi nw Hall's Flat; Lassen National Forest 1676 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
  SD8289  Dicentra formosa Mrs. R. M. Austin Aug 1882 Lassen Comment
  CHSC56816  Dichelostemma multiflorum Jerry Snodgrass 1978-7-8 42 Lassen Willard Creek, 2 mi S of Hwy 36 near Forest Service campsite. 1499 Comment
  POM109921  Dichelostemma multiflorum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin s Ranch. 1463 Comment
  CAS-BOT-BC500985  Dichelostemma multiflorum Ella Dales Cantelow 1935-6-8 s. n. Lassen 13 mi. w. of Bieber Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  CHSC45007  Dieteria canescens var. shastensis Lowell Ahart; John Thomas Howell 1974-7-9 539 Lassen Near the south edge of Eagle Lake. 1584 Comment
  CHSC60820  Dieteria canescens var. shastensis Vernon H. Oswald; Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, between Grays Valley and Harvey Valley, E of Poison Lake. 1734 Comment
  CAS-BOT-BC290959  Dieteria canescens var. shastensis P. Monnet No date on label 789 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  UCSB25961  Dieteria canescens var. shastensis Wilken, Dieter; Haller, John; Langford, A. 1968-9-12 Lassen Along California Highway 36, 11.2 miles east of Chester 1524 Comment
  CAS-BOT-BC153681  Diplacus mephiticus L. G. Bennett 1967-6-23 21 Lassen Eagle Lake Biological Station Grounds 1554 Comment
  SEINET201637 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8464 Lassen 50 mi SE of Susanville Comment
  CHSC60776  Diplacus nanus Vernon H. Oswald; Lowell Ahart 1993-6-3 5482 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 1.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the NW edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  CDA31696  Distichlis spicata E. E. Fix, Agric. Comm. Sep 1951 Lassen 0 Comment
  JEPS107865  Distichlis spicata Lowell Ahart, John Dittes 2005-6-2 11922 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  HSC17851  Dodecatheon alpinum Jim Vaughn 1956-8-11 Lassen Horseshoe Lake, Mt. Lassen National Park 1982 Comment
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Apr 28 2013
  HSC17852  Dodecatheon alpinum M. T. Milligan 1964-7-16 135 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC1776683  Dodecatheon conjugens G. Schoolcraft 1999-5-5 2814 Lassen Along Tuledad Road about 2 mile NE of Dodge Reservoir 1859 Comment
  HSC17905  Dodecatheon subalpinum W. F. Nickel 1965-4-11 Lassen About 100 yds. W of Paynes Creek on Hwy. 36 Comment
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Jun 27 2013
  UCR227662  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  CHSC5223  Downingia bacigalupii J. B. Kimsey 1946-6-11 Lassen Eagle Lake. Pine Creek. 1584 Comment
  JEPS14618  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (forest adjacent to State Highway 299); Lassen National Forest 1219 Comment
  UC1024290  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (adjacent to State Highway 299); Lassen National Forest Comment
  UC1191995  Downingia bacigalupii Verne Grant and Irving Schneider 1947-7-31 8209 Lassen ne quarter George Williams section 19; Madeline Plain Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  UCR163269  Downingia bacigalupii Jim Andre 1993-6-29 1408 B Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  SEINET12329644  Downingia bacigalupii N. H. Holmgren, Holmgren, P. K. 1980-1 9472 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) W of US Highway 395 from a turnoff 10.3 km 1615 Comment
  UCD23274  Downingia bacigalupii Louis K. Mann, Pat Mann 1963-6-18 s.n. Lassen Road cut through sagebrush flat. 13 miles north of Susanville on road to Merrillville. Comment
  CHSC30606  Downingia bicornuta T. M. Lane 1975-6-23 28 Lassen 50 m n of spring headwaters of Willow Cr; 3.2 km ese of Eagle Lake Field Station; 22.4 km n of Susanville. 1589 Comment
  CDA42329  Downingia elegans G. D. Barbe 1982-7-12 3869 Lassen Grasshopper Valley; 0.8 miles northeast of Highway 139, on South Grasshopper Road. 0 Comment
  SEINET3147635  Downingia elegans M. E. Jones 1897-6-22 sn Lassen 10 mi S of Amedee 1219 Comment
  RSA128294  Downingia insignis P. H. Raven, Otto T. Solbrig 1958-6-17 13282 Lassen Along U.S. Hwy 395, 1.9 miles S of Ravendale. Comment
  SJSU3174  Downingia insignis J. W. Tilden 1958-6-27 1290 Lassen Madeline Comment
  RSA293375  Downingia insignis Reino Alava 1957-7-5 1144 Lassen Along Highway 395, 10 miles N of Madeline. Comment
  CHSC99496  Downingia laeta Lowell Ahart; John Dittes 2008-6-20 14928 Lassen Bottom of 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
  RSA0035918  Downingia laeta Lowell A. Ahart, John Dittes 2008-6-20 14928 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET8039620  Downingia laeta G. Schoolcraft 1995-6-6 2493 Lassen Laver Spring. 1585 Comment
  CHSC91326  Draba verna var. aestivalis Lowell Ahart; John Dittes 2005-6-1 11901 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CAS-BOT-BC527338  Drymocallis glandulosa var. reflexa John Thomas Howell 1977-6-22 52405 Lassen West of Susanville near the confluence of Willard Creek and Susan River, Sierra Nevada 1432 Comment
  JEPS121283  Elatine Lowell Ahart, John Dittes 2013-7-22 18882 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC107341  Elatine californica Lowell Ahart; John Dittes 2011-6-21 17527 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC112749  Elatine californica Lowell Ahart; John Dittes 2013-7-22 18881 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116198  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20300 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
  JEPS123972  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC113617  Eleocharis acicularis George Wilson Gillett 1957-7-22 878 Lassen Snag Lake. Margin of gravel bars along south shore. 1844 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  RSA772874  Eleocharis acicularis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47208 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  UC1836  Eleocharis acicularis J. Burtt Davy Jun 17-24 1897 3290 Lassen Honey Lake Valley Comment
  UC1567360  Eleocharis bella G. Schoolcraft 1989-7-18 1982 Lassen S of Clarks Valley Road near Bucks Spring 1874 Comment
  CAS-BOT-BC112847  Eleocharis macrostachya Hans Leschke 1959-8-2 1588 Lassen Manzanita Lake 1781 Comment
  UCD54570  Eleocharis parvula Ellen Dean; Dawn Cunningham 2005-10-25 2753 Lassen East of the town of Susanville. Property N of California Correctional Facility. Western side of property. Extensive seasonal wetland system that was used until June 2005 as receiving area for geothermal heating system used by Correctional Facility and prison. 1248 Comment
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Oct 5 2010
  RSA127038  Eleocharis quinqueflora Robert W. Gardner 1939-6-15 G- 36 Lassen Little Harvey Valley 1700 Comment
  CHSC96438  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95296  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM313177  Elodea nuttallii H. L. Mason, Verne Grant 1947-7-9 13292 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  SEINET10525781  Elymus X hansenii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 886 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  HSC10975  Elymus caput-medusae T. F. Newman 1965-7-28 6540 Lassen N side of Skedaddle Mtn., E side of Wendel. Comment
  UCD64242  Elymus condensatus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  CAS-BOT-BC227493  Elymus elymoides John Thomas Howell 1934-6-10 11866 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  JEPS122360  Elymus elymoides Joseph Broberg, Jaycee Leonard 2012-7-31 CA 320 -117 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left into the Mendibourne wildlife game management area. Collection is across a fence in BLM land Comment
  JEPS128418  Elymus elymoides Jennifer Mueller 2017-7-18 CA 320 -193 Lassen Near Long Springs on Cold Springs Mountain. Comment
  UCD61624  Elymus elymoides A. A. Beetle 1941-6-28 2804 Lassen 10 miles W of Chester, rte 36. Comment
  SEINET10527893  Elymus elymoides Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2581 Lassen 6 mi S of Adin, alond Calif. hwy 139 right-of-way; in basalt-clay, grassy road bank; Artemesia-Juniper assoc. 1372 Comment
  CHSC118823  Elymus elymoides var. californicus L. P. Janeway; B Castro 2015-6-5 11762 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  HSC22391  Elymus elymoides var. californicus D. E. Anderson 1969-7-5 4996 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  JEPS126479  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-30 CA 350 -043 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  UC1136935  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  CAS-BOT-BC206731  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CAS-BOT-BC206734  Elymus glaucus subsp. glaucus John Thomas Howell; Gordon H. True 1973-8-1 50179 Lassen Gold Run Creek south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  UCD62499  Elymus multisetus John Thomas Howell 1976-7-20 52001 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  JEPS68378  Elymus trachycaulus Brown and Wieslander 1922-7-23 74 Lassen Martin Springs Comment
  UC1024705  Elymus trachycaulus Leo Whitney 1933-6-9 2139 Lassen Black's Lake Lassen National Forest 1706 Comment
  UC1037145  Elymus trachycaulus Leo Whitney 1935-6-24 3306 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  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
  SEINET12755568  Elymus triticoides F. H. Hillman 1897-7-12 s.n. Lassen Chat. Comment
  SEINET6657093  Elymus triticoides Leo Whitney 1934-8-4 2128 Lassen Sheepshead, ca. 10 miles northwest of north end of Eagle Lake, Lassen National Forest.; 0 1890 Comment
  CHSC76104  Elytrigia elongata Lowell Ahart; Vernon H. Oswald 1999-9-13 8212 Lassen On the edge of a canal, just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1220396  Elytrigia elongata T. C. Fuller 1963-7-15 10887 Lassen 2.9 mi se Pittville (s of road to Little Valley) Comment
  CAS-BOT-BC81879  Ephedra viridis Doris Kildale Gillespie 1930-5-12 9347 Lassen between Susanville and Leavitt Lake 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
  CHSC25297  Ephedra viridis Pauleen Broyles 1977-5-30 141 Lassen Spencer's Spring ca 8 km nne of Herlong. 1620 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
  SEINET11739305  Ephedra viridis M. Sacks, Detzer 1977-1 13 Lassen 4 km S of Hwy 395 1386 Comment
  SEINET5335198  Ephedra viridis F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  CHSC106080  Epilobium brachycarpum Lowell Ahart; John Dittes 2010-7-31 17005 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  UC1137772  Epilobium brachycarpum August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest 1706 Comment
  RSA0011500  Epilobium brachycarpum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46975 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  JEPS121248  Epilobium campestre Lowell Ahart, John Dittes 2013-7-22 18850 Lassen About 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
  RSA0105583  Epilobium campestre Lowell Ahart, John Dittes 2013-7-22 18850 Lassen About 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1523739  Epilobium campestre Gary Schoolcraft 1981-9-1 571 Lassen se of Bieber (along road) 1255 Comment
  UC1594621  Epilobium campestre Vernon H. Oswald and Lowell Ahart 1992-7-16 5110 Lassen between Old Station and Susanville (s side of Hwy 44); McCoy Flat Reservoir, Bridge Creek 1691 Comment
  UC764398  Epilobium campestre R. F. Hoover 1940-9-21 4602 Lassen 4 mi w Susanville 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
  HSC95176  Epilobium ciliatum subsp. ciliatum Gordon Leppig, Kai Neander, Juli Neander 1997-7-26 690 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA0105585  Epilobium ciliatum subsp. ciliatum Lowell Ahart, John Dittes 2013-7-22 18856 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC118481  Epilobium ciliatum subsp. ciliatum Don Lepley 2015-6-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Southwest corner of Eagle Lake, roughly a half-mile northeast of entrance to Christie Campground, close to current lakeshore. UTM 683603 x 4493237 1559 Comment
  JEPS114690  Epilobium ciliatum subsp. glandulosum Lowell Ahart, John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC66251  Epilobium hallianum Vernon H. Oswald; Lowell Ahart 1996-6-24 7849 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
  CHSC77220  Epilobium oregonense G. Schoolcraft 1993-7-20 2330 Lassen About 1 mile s. of Boot Lake. Along creek. 1950 Comment
  HSC95332  Epilobium oregonense Gordon Leppig 1998-7-12 937 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC725478  Epilobium pallidum A. A. Heller 1938-7-28 15295 Lassen meadow edge of a swamp about 2 mi e Westwood 1524 Comment
  UC726203  Epilobium pallidum A. A. Heller 1941-6-26 16233 Lassen on ridge w Nieubieber Comment
  CHSC117524  Epilobium torreyi Lowell Ahart; John Dittes 2016-7-13 21126 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miless (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC56947  Equisetum arvense John Thomas Howell 1974-7-8 50476 Lassen Susanville 1295 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
  CAS-BOT-BC57139  Equisetum hyemale subsp. affine John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49432 Lassen Elysian Valley, west of Janesville 1325 Comment
  SEINET10530241  Equisetum laevigatum Mary Susan Taylor 1982-5-29 Taylor 4566 Lassen 4900 ft. T22N R17E sw/sw sec 23. Loyalton quad. In sandy rd embankment at jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno. 1493 Comment
  CDA18386  Eragrostis cilianensis G. D. Barbe 1978-8-31 2425 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  CAS-BOT-BC284059  Eragrostis pectinacea var. pectinacea John Thomas Howell 1975-7-23 51383 Lassen Susanville, Sierra Nevada 1295 Comment
  CAS-BOT-BC174122  Eremogone aculeata Clare B. Hardham 1971-8-22 18426 Lassen Diamond Mountain 2346 Comment
  NY1057004  Eremogone congesta var. simulans A. J. Cronquist 1959-6-17 8463 Lassen 50 miles southeast of Susanville Comment
  CHSC66382  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1996-6-17 7798 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  CHSC67078  Eremogone congesta var. subcongesta Jeanne Boze 1981-6-11 104 Lassen Along roadside, ca. 6 mi. from Hwy. 139 on Horse Lake Rd. 1737 Comment
  CHSC91922  Eremogone congesta var. suffrutescens L. P. Janeway; B. Castro 2005-7-10 8476 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  CAS-BOT-BC159999  Eremothera boothii subsp. alyssoides Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 7 miles south of Secret Valley C.C.C. Camp Comment
  CAS-BOT-BC160000  Eremothera boothii subsp. alyssoides Elmer I. Applegate 1934-5-4 8918 Lassen Secret Valley Comment
  UCD150407  Eremothera boothii subsp. alyssoides William Anderson 1963-6-2 s.n. Lassen Wendel. Comment
  SEINET3995252  Eremothera minor A. Tiehm 1980-1 5752 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  UC1483823  Eremothera minor G. Schoolcraft 1980-6-11 267 Lassen w Wendel 1219 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
  SEINET14595159  Eriastrum signatum M. J. Williams 1974-7-26 74 -L-27 Lassen S of Hwy 70, 2 miles W of Hallelujhah Junction. 1494 Comment
  UC1178959  Eriastrum signatum Herbert L. Mason 1957-7-5 14714 Lassen s Madeline; Madeline Plains Comment
  UC908543  Eriastrum signatum R. F. Hoover 1940-10-1 4648 Lassen Johnstonville Comment
  CAS-BOT-BC515169  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen Near Plumas Junction Comment
  RSA0124146  Eriastrum signatum David B. Dunn 1956-7-3 11922 Lassen On Highway 395. Comment
  JEPS69071  Eriastrum wilcoxii W. L. Jepson 1918-8-2 7792 Lassen Long Valley 1219 Comment
Read comments
Nov 7 2008
  UC1118663  Ericameria bloomeri H. P. Hagge 1929-9-11 15 Lassen Logan Mt. Eagle Lake Quad., Logan Mtn. 1828 Comment
  UC1523743  Ericameria bloomeri Gary Schoolcraft 1981-8-25 565 Lassen w side of Eagle Lake (along main road) Comment
  UC29712  Ericameria nauseosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3344 Lassen Honey Lake Valley Comment
  CAS-BOT-BC298171  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  CAS-BOT-BC298174  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
  UCD54540  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2724 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  UC1776655  Ericameria parryi var. nevadensis G. Schoolcraft 1998-8-19 2803 Lassen N upper slope of Shaffer Mountain 1981 Comment
  SEINET10617383  Erigeron aphanactis Jeffrey Huber 1971-6-2 Huber 133 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  UC135492  Erigeron aphanactis var. aphanactis unknown 1892-6-22 Lassen Honey Lake Comment
  SEINET8513002 Image available Erigeron bloomeri A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-5-28 s.n. Lassen Costantia Allotment. West of Peterson's 1490 Comment
  CAS-BOT-BC294488  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-7-8 12513 Lassen Harvey Valley Comment
  CHSC25088  Erigeron bloomeri var. bloomeri K. R. Stern 1967-6-24 2415 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC64864  Erigeron bloomeri var. bloomeri Vernon H. Oswald 1995-6-26 6917 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  GMDRC7734  Erigeron bloomeri var. bloomeri J. M. Andre, G. Clifton 1993-6-1 33411 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
  JEPS89690  Erigeron bloomeri var. bloomeri Dean Wm. Taylor with Glenn Clifton 1990-6-12 10878 Lassen Forest Road 39N08 just as the road enters the valley as traveling from Adin (Ash Valley, Modoc Plateau); Modoc Plateau, Ash Valley, Forest Road 39N08 1554 Comment
  UC1228141  Erigeron bloomeri var. bloomeri Beecher Crampton 1960-6-18 5723 Lassen vicinity Blue Lake Ranch; southern Warner Mountains Comment
  CHSC105252  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
  CHSC117510  Erigeron divergens Lowell Ahart; John Dittes 2016-7-13 21106 Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 mile south of County Road A-2, 5.3 miles(air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  CHSC65297  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1995-8-14 7193 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small stream, N of Susanville. 1676 Comment
  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
  JEPS88241  Erigeron divergens Vernon H. Oswald and Lowell Ahart 1996-6-17 7808 Lassen gravel bar on edge of river e Devils Corral Trailhead (Bizz Johnson Trail) (w of 6.0 milepost, trailhead located off of Hwy 36, ca. 7 mi w of Susanville); Modoc Plateau, Susan River 1402 Comment
  UC1561865  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca .75 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  UCR67028  Erigeron divergens George K. Helmkamp 1990-9-23 G- 7 Lassen north of Ravendale 1677 Comment
  CAS-BOT-BC295976  Erigeron divergens Peter H. Raven 1963-5-29 18424 Lassen U.S. Highway 395 12.0 miles south of Ravendale Comment
  CHSC65088  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1995-7-24 7129 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi ESE of Silver Lake on Forest Route 10 just S of its jct. with Forest Road 30N21. At roadside. 1935 Comment
  CHSC77194  Erigeron eatonii var. plantagineus G. Schoolcraft 1993-6-29 Lassen Ash Valley RNA 16 mi. E. of Adin. 1554 Comment
  CHSC89752  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  JEPS87524  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  UC1587058  Erigeron eatonii var. plantagineus G. Schoolcraft 1991-6-18 2162 Lassen along Hwy 139 4 mi w Said Valley Res. 1706 Comment
  CAS-BOT-BC300426  Erigeron elegantulus Mrs. C. C. Bruce 1898-6-1 2182 Lassen Madeline Plains Comment
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 Comment
  UC87694  Erigeron filifolius T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CHSC105240  Erigeron filifolius var. filifolius Lowell Ahart; John Dittes 2010-7-31 17008 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  UCR244069  Erigeron filifolius var. filifolius Jim Andre, G. L. Clifton 1993-6-9 19695 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
  UCD131967  Erigeron glacialis var. glacialis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volc. Nat'l Park. 2286 Comment
  UC2027204  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen National Forest. N of 30N61, W of A21. Swain Mountain quadrangle Comment
  CHSC25547  Erigeron inornatus var. inornatus Robert A. Schlising 1974-7-19 3153 Lassen SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station. Comment
  CHSC68844  Erigeron linearis Vernon H. Oswald; Lowell Ahart 1997-6-24 8608 Lassen South of Susanville on the north side of Diamond Mtn. at slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. At roadside. 1889 Comment
  JEPS94538  Erigeron linearis Vernon Oswald and Lowell Ahart 1997-6-24 8608 Lassen 0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43 1889 Comment
  CAS-BOT-BC295959  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  SJSU6631  Erigeron philadelphicus var. philadelphicus H. L. Buckalew 1961-7-9 Lassen spring by Blue Lake, Warner Mountains 1920 Comment
  JEPS117505  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
  CHSC86949  Erigeron pumilus var. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  HSC82250  Erigeron pumilus var. intermedius Thomas W. Nelson, Jane Nelson 1980-7-6 5994 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS22799  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley Lassen Forest, Grass Valley 1700 Comment
  UC87588  Erigeron pumilus var. intermedius T. S. Brandegee 1892-6-28 Lassen Jamesville Comment
  SEINET251878  Eriogonum Leila M. Shultz, John S. Shultz 1985-6-23 8607 Lassen Long Valley Creek drainage, 5 miles north of Doyle. 1305 Comment
  UC762677  Eriogonum baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville Comment
  CAS-BOT-BC241568  Eriogonum baileyi var. baileyi Margaret Williams; Steven Williams 1974-7-26 74 -L-25 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC7738  Eriogonum caespitosum Beverley J. Wise 1969-5-3 78 Lassen 3.4 mi east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1584 Comment
  NY242927  Eriogonum caespitosum B. M. Bartholomew 1993-5-13 6567 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield. 1330 Comment
  POM253244  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen Grassy, gravelly slope between Secret Valley and Ravendale, on U.S. Highway 395 1524 Comment
  CAS-BOT-BC241835  Eriogonum caespitosum Pauleen Broyles 1977-5-30 150 Lassen Ca. 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Creed [Creek] Road, ca 8 km ne of Herlong 1660 Comment
  JEPS19795  Eriogonum collinum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6009 Lassen ne along US Highway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  NY242501  Eriogonum collinum N. H. Holmgren 1980-7-3 9485 Lassen U.S. Highway 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  NY242502  Eriogonum collinum G. Schoolcraft 1983-6-28 1021 Lassen East side of Mud Flat. 31-15-26 1341.1 Comment
  RSA338584  Eriogonum collinum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9485 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  RSA0009291  Eriogonum collinum G. H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1494 Comment
  UC1553394  Eriogonum douglasii var. douglasii G. Schoolcraft 1988-6-7 1812 Lassen 14 air mi ne Ravendale 1737 Comment
  CHSC50839  Eriogonum elatum var. elatum Vernon Oswald; Lowell Ahart 1990-7-25 4399 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 Comment
  JEPS116871  Eriogonum elatum var. elatum David Gowen 2007-7-13 785 Lassen Just off Hwy 395 south of Constantia at road crossing Long Valley Creek. Comment
  CHSC93237  Eriogonum elatum var. villosum John Dittes; Scott Chamberlain 2004-6-28 1020 A Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-mile east of Plumas County line; near meadow edge. 1511 Comment
  UCR90298  Eriogonum kearneyi G. R. Ballmer 1993-7-1 s.n. Lassen N end of Fort Sage Mtns 1542 Comment
  CAS-BOT-BC259389  Eriogonum luteolum Ernest C. Twisselmann 1961-9-21 6571 Lassen Harvey Valley Road, ca. 14 miles south of Pitville [Pittville] 1219 Comment
  RSA125289  Eriogonum maculatum Peter H. Raven, Otto T. Solbrig 1958-6-17 13271 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  RSA176182  Eriogonum maculatum Noel Holmgren, James L. Reveal 1964-8-22 1724 Lassen 35 miles mortheast of Susanville, 18 miles south of Ravendale along U.S. 395 Comment
  UC1305802  Eriogonum maculatum Noel H. Holmgren, James L. Reveal 1964-8-22 1724 Lassen 18 mi s along U.S. 395 Ravendale (35 mi ne of Susanville) Comment
  SEINET10299463  Eriogonum maculatum W. L. Jepson 1918-8-5 Lassen Madelin Plains 1615 Comment
  UC7867810  Eriogonum microthecum var. ambiguum R. F. Hoover 1940-9-28 4636 Lassen canyon n Leavitt Comment
  NY281555  Eriogonum microthecum var. laxiflorum E. K. Balls 1952-10-10 18143 Lassen In Northern Juniper Woodland, 8 mi. s.e. of Ravendale, Hwy 395, between Susanville and Alturas. 1280.2 Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  UC762680  Eriogonum nidularium R. F. Hoover 1940-9-29 4643 Lassen pass between Mt. Shaffer and Warren Peak Comment
  CHSC106170  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CHSC57303  Eriogonum nudum var. pubiflorum Mary Meyer 1980-7-14 Lassen 1/4 mi southeast of rest stop on Hwy 395, south of Ravendale. 1645 Comment
  CHSC87119  Eriogonum nudum var. pubiflorum L. P. Janeway 2001-6-20 7204 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC761785  Eriogonum nudum var. pubiflorum R. F. Hoover 1940-9-28 4629 Lassen Susanville Comment
  UC77673  Eriogonum nudum var. scapigerum T. S. Brandegee 1892-6-27 Lassen Milford Comment
  CHSC60839  Eriogonum ovalifolium var. purpureum Vernon H. Oswald; Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. Edge of a vernal pool in a meadow. 1719 Comment
  HSC26580  Eriogonum ovalifolium var. purpureum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19303 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS93951  Eriogonum ovalifolium var. purpureum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the w side of Highway 44 ca. 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44 1737 Comment
  OBI76940  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen Natl forest. Windy Hollow. Pine Crk Valley quad. T31N R8E sec 15 NE of SE 1716 Comment
  CAS-BOT-BC272626  Eriogonum spergulinum var. reddingianum John Thomas Howell 1934-7-6 12446 Lassen Harvey Valley 2438 Comment
  JEPS56326  Eriogonum spergulinum var. reddingianum Hilda Grinnell 1928-6-28 Lassen near Butte Lake 1889 Comment
  HSC63565  Eriogonum sphaerocephalum var. halimioides Thomas W. Nelson, Jane P. Nelson 1980-7-6 5998 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS28865  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 mi s Adin Comment
  RSA31953  Eriogonum sphaerocephalum var. halimioides A. A. Heller 1938-6-23 15214 Lassen south of Secret Valley on U.S. Highway #395. 1372 Comment
  UC1226260  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 mi s Adin Comment
  UC1483798  Eriogonum sphaerocephalum var. halimioides Teresa Prendusi 1980-7-14 Lassen along Ash Valley road about 15 mi w Madeline; Ash Valley 1524 Comment
  CAS-BOT-BC262740  Eriogonum sphaerocephalum var. sphaerocephalum Brandegee 1892-6-30 s.n. Lassen Susanville Comment
  JEPS56418  Eriogonum sphaerocephalum var. sphaerocephalum Hilda W. Grinnell 1934-5-31 Lassen near Susanville (mouth of Piute Creek Canyon); Piute Creek Canyon Comment
  RSA0029191  Eriogonum strictum John F. Emmel 1997-6-8 1491 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  CAS-BOT-BC262743  Eriogonum strictum var. anserinum Ralph K. Gierisch 1968-7-11 3347 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC13650  Eriogonum strictum var. anserinum M. S. Taylor 1974-6-20 256 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1554 Comment
  UC1924216  Eriogonum strictum var. anserinum Debra Valov 2004-6-9 2004268 Lassen Bieber; off County A2 c. 12 km E of Hwy 299 1270 Comment
  CAS-BOT-BC262770  Eriogonum strictum var. proliferum Doris Kildale Gillespie 1930-5-13 9365 Lassen Between Susanville and Janesville Comment
  UC85812  Eriogonum strictum var. proliferum Brandegee June 1892 Lassen Susanville Comment
  RSA782634  Eriogonum umbellatum Elizabeth A. Kempton, Tim Tibault 2006-7-29 418 Lassen Town of Chester. Vacant lot at intersection of Willow Way and Main Street 1388 Comment
  SEINET8513574  Eriogonum umbellatum O. Schilling, M. Gray, S. Jesselson, A. Rosenblum 2015-7-16 NV 030 -1125 Lassen Constantia Allotment, South on Red Rock Road until reach Highway 395, head South, second left into allotment, halfway up first hill 1469 Comment
  CAS-BOT-BC267892  Eriogonum umbellatum Margaret M. Hanna 1956-6-3 s.n. Lassen Near Hiway 299, 62 mi. E. of Redding Comment
  CHSC30618  Eriogonum umbellatum var. modocense Eric Miller 1975-7-8 7 Lassen N. E. slope of Gallatin Peak. 2011 Comment
  NY399204  Eriogonum umbellatum var. modocense G. Schoolcraft 1981-6-15 459 Lassen Ash Valley 1554.5 Comment
  UC1537274  Eriogonum umbellatum var. modocense Gordon H. True Jr. 1936-6-25 536 Lassen e Harvey Ranger Station; Harvey Valley 1706 Comment
  JEPS88218  Eriogonum umbellatum var. modocense Vernon H. Oswald and Lowell Ahart 1996-6-17 7799 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville 1420 Comment
  CAS-BOT-BC265097  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-10 3 -83 Lassen About 3 miles east of Susanville, Center Road near Leavitt Lane, Sierra Nevada Comment
  CHSC68902  Eriogonum umbellatum var. nevadense Vernon Oswald; Lowell Ahart 1997-6-24 8640 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
  JEPS56240  Eriogonum umbellatum var. nevadense Hilda W. Grinnell 1928-6-26 Lassen inside crater-rim of Cinder Cone Lassen Volcanic National Park 2103 Comment
  NY399401  Eriogonum umbellatum var. nevadense N. H. Holmgren 1970-6-25 4375 Lassen North end of Petersen Mountain, near U.S. 395, 8 miles north of junction with California 70 (Hallelujah Junction) 1524.0 Comment
  UC585250  Eriogonum umbellatum var. nevadense E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1756 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  RSA766453  Eriogonum ursinum C. Epling, Wm. Robinson 1935-7-17 s.n. Lassen Chaos Crags, Lassen Park Comment
  CDA18387  Eriogonum vimineum G. D. Barbe 1978-8-31 2426 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  CHSC12414  Eriogonum vimineum Anne Linda Brisk 1969-6-21 16 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC64888  Eriogonum vimineum Vernon H. Oswald; Lowell Ahart 1995-6-19 6882 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. On the edges and bottom of an eroded dry wash on the n side of the road. 1371 Comment
  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
  SEINET10299456  Eriogonum vimineum Gary Schoolcraft 1982-8-18 889 Lassen Along Doyle Grade Road west of Doyle Creek 1585 Comment
  UC1032292  Eriogonum vimineum H. S. Yates 1936-8-11 6070 Lassen Baxter Creek Susanville Quadrangle, Baxter Creek Comment
  UC1258486  Eriogonum vimineum G. Schoolcraft 1979-6-19 78 B Lassen Painter's Flat 1719 Comment
  UC1982142  Eriogonum vimineum Elizabeth Kempton 2007-8-15 511 Lassen Janesville, intersection of 395 and Sunnyside Rd. Comment
  CAS-BOT-BC262356  Eriogonum vimineum Margaret Williams; Louella Bass 1972-10-22 EV 1 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC262366  Eriogonum vimineum David D. Keck 1930-7-23 951 Lassen Susanville 1280 Comment
  HSC69595  Eriogonum vimineum J. Walker 1979-7-18 37 Lassen Near Skedaddle Creek, S portion 1311 Comment
  SEINET10299461  Eriogonum vimineum W. L. Jepson 1918-8-5 7816 Lassen Madelin Plains 1615 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
  JEPS96132  Eriophorum gracile Vernon H. Oswald and Lowell Ahart 1996-6-24 7888 Lassen 2.5 mi. s. Eagle Lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), e. side Papoose Meadows, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  HSC81546  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 5997 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA647563  Eriophyllum lanatum Marion P. Harthill 1972-6-17 810 Lassen Ravendale 1768 Comment
  CHSC117205  Eriophyllum lanatum var. achilleoides Lowell Ahart; John Dittes 2016-6-7 21004 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. 1289 Comment
  RSA221801  Eriophyllum lanatum var. integrifolium Noel Holmgren, John J. Fay, Barton L. Bethers 1970-6-25 4376 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  CHSC91300  Erodium cicutarium Lowell Ahart; John Dittes 2005-6-2 11923 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
  CHSC58831  Eryngium alismifolium Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  UC809840  Eryngium alismifolium G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 3999 Lassen n.w. Susanville (Hog Flat); Hog Flat 1676 Comment
  CDA38323  Eryngium articulatum M. Pryor, E. E. Fix 1961-8-9 s.n. Lassen 1 mile north of Bieber. 0 Comment
  UCD107938  Eryngium pinnatisectum Tim Kuhn 2006-7-20 53 Lassen Eagle Lake Ranger District. Comment
  CAS-BOT-BC54588  Erysimum capitatum Al Simontacchi 1940-6-15 868 Lassen Lassen Forest. 0.6 miles west southwest of Black Mountains. 2133 Comment
  UC1533163  Erysimum capitatum G. Schoolcraft 1986-4-28 1529 Lassen lower w slopes Ft. Sage Mtns. 1432 Comment
  UC1584017  Erysimum capitatum G. Schoolcraft 1990-5-15 2047 Lassen about 4 mi s Nubeiber; John's Valley area 1310 Comment
  JEPS53558  Erysimum capitatum var. capitatum Frances D. Payne 1929-7-12 93 Lassen on ridge above Lost Lake; Warner Mts. 2286 Comment
  JEPS94111  Erysimum capitatum var. capitatum Vernon H. Oswald and Lowell Ahart 1998-5-22 9117 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 1.1 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1447 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
  CHSC60405  Erythranthe breweri Mary Ann Showers 1992-6-12 2527 Lassen Lassen Volcanic National Park. Butte Lake. 1859 Comment
  CHSC99532  Erythranthe guttata Lowell Ahart; John Dittes 2008-6-20 14978 -A Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC60923  Erythranthe inflatula Vernon H. Oswald; Lowell Ahart 1993-7-8 5652 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  CHSC71395  Erythranthe inflatula Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9263 Lassen Pittville Rd. (Lassen 111, FS 36N01) on the southeast edge of Poison Lake 1.9 mi N of Hwy. 44. On the bank of a pond on the east side of the railroad, which parallels the lake shore at this point. 1709 Comment
  CAS-BOT-BC151473  Erythranthe latidens James Jokerst 1983-7-23 1872 Lassen Grasshopper Valley Quad., near Madeline Plains 1614 Comment
  CAS-BOT-BC153608  Erythranthe moniliformis John Thomas Howell; Gordon H. True 1973-7-31 50051 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  SFV18615  Eschscholzia caespitosa T. W. Nelson, J. P. Nelson 1990-7-14 8777 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  CHSC6197  Eschscholzia californica R. Gein 1946-6-17 Lassen Horse Lake, near Eagle Lake. 1554 Comment
  UC725540  Eschscholzia californica A. A. Heller 1941-6-26 16228 Lassen a short distance w county line near Adin (Modoc County) (along U.S. Hwy 299) Comment
  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
  RSA518978  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UC1562582  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ca 10 airmi due s of, (ridge of Diamond Mts ca 1.5 mi e of Diamond Peak) Susanville; Diamond Mts. 2255 Comment
  RSA183413  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its jct with Bassett Road (ca 2 miles S of US Hwy 299 and 4 miles SW of Adin). 1280 Comment
  UCD39131  Euphorbia crenulata Beecher Crampton 1964-6-25 7072 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  UCD142769  Euphorbia serpillifolia R. N. Raynor 1938-7-16 s.n. Lassen Honey Lake Valley. Comment
  CHSC64874  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1995-6-19 6881 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  UC1533119  Euphorbia spathulata G. Schoolcraft 1986-6-18 1629 Lassen 3.5 mi e Hwy. 195 (on road to Hall Sp.) 1463 Comment
  UC468921  Eurybia integrifolia Franklin P. Nutting Lassen Silver Lake Comment
  SD112378  Eurybia integrifolia Darley F. Howe 1964-8-2 3919 Lassen East Creek, Warner Mountains, Modoc National Forest. 2010 Comment
  SEINET8687854 Image available Euthamia occidentalis L. Kerr, A. Rossman, T. Sparer 2012-10-31 NV 030 -858 Lassen Head north on I-580/US 395 past Reno. Right onto Red Rock Road. Go for about one mile and park on right side of road. Hike about 300 feet west down to creek and collection area on irght side of road. 1362 Comment
  UCD66089  Festuca idahoensis Al Franklin 1987-7-6 87 -26 Lassen Eagle Lake Field Station, east shore of Eagle Lake, N of Susanville. 1584 Comment
  CAS-BOT-BC278937  Festuca rubra George W. Gillett 1957-7-28 923 Lassen Lassen Volcanic National Park. Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake 1859 Comment
  CHSC61058  Fragaria virginiana Vernon H. Oswald; Lowell Ahart 1993-8-3 5756 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the margin of the swamp. 1932 Comment
  SEINET10852446  Frangula rubra Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 156 Lassen Lassen National Forest. 5.6 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1980 Comment
  UC1523707  Fraxinus latifolia Gregg Riegel 1981-6-17 1128 Lassen in and along Beaver Creek Beaver Creek 1280 Comment
  HSC21366  Fremontodendron californicum J. J. Wagoner 1965-4-30 49 Lassen 16 mi. W of Child's Meadow, along Hwy. 36 Comment
  OBI75875  Fritillaria atropurpurea Anthony Baniaga 2011-1 Lassen Comment
  RSA59761  Fritillaria pudica E. K. Balls 1950-5-18 14768 Lassen Above Ash Creek Public Camp., off rd. from Adin to Madeline. 1616 Comment
  CHSC60766  Galium aparine Vernon H. Oswald; Lowell Ahart 1993-6-14 5548 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  HSC75888  Galium aparine D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19278 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC1609119  Galium aparine Vernon H. Oswald and Lowell Ahart 1993-6-14 5548 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  UC773944  Galium bifolium L. R. Short and W. Gansberg 1926-6-2 S- 368 Lassen Lassen National Forest 1850 Comment
  RSA121073  Galium bifolium L. R. Short, W. Gansberg 1936-6-2 S- 368 Lassen Lassen forest. MDM. 1851 Comment
  UC1226043  Galium multiflorum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8471 Lassen 50 mi se Susanville 1371 Comment
  OBI75867  Galium triflorum Anthony Baniaga 2011-8-9 493 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  CAS-BOT-BC478871  Gayophytum John Thomas Howell; Gordon H. True 1973-7-31 50061 Lassen Transition Zone forest in areas of granitic rock on road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  CAS-BOT-BC478878  Gayophytum John Thomas Howell; Gordon H. True 1973-8-1 50206 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2164 Comment
  UCD55278  Gayophytum diffusum Ellen Dean 2006-5-15 3093 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
  SBBG61277  Gayophytum diffusum subsp. parviflorum S. W. Hutchinson -Jun-1925 735 Lassen Eagle Lake 1554 Comment
  SEINET10453071  Gayophytum diffusum subsp. parviflorum Mary Susan Taylor 1982-8-19 Taylor 5023 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
  POM38702  Gayophytum helleri var. glabrum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC27713  Gayophytum heterozygum Robert A. Schlising 1978-7-21 3318 Lassen E side of Eagle L., near Eagle Lake Field Station. 1578 Comment
  UC1122616  Gayophytum heterozygum A. Simontacchi 1940-6-30 897 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Hall's Flat Quadrangle 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
  UC303066  Gayophytum heterozygum Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC27711  Gayophytum racemosum George Deriso 1978-7-21 90 Lassen S of Eagle Lake, at E end of Mahogany Lake; near lake shore. 2060 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
  RSA271916  Gayophytum ramosissimum Christopher Davidson 1975-6-7 2759 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC66725  Gentiana calycosa Vernon H. Oswald; Lowell Ahart 1996-8-1 8119 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood 1737 Comment
  UC405455  Gentiana newberryi Mrs. R. M. Austin 1879-1 Lassen Mountain Meadows Comment
  CHSC76758  Gentiana newberryi var. newberryi L. P. Janeway 1999-9-5 6576 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 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
  CHSC58499  Gentianopsis simplex Vernon H. Oswald 1992-7-3 5052 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. Along drainage on the upper strand of the lake. 1851 Comment
  CHSC59088  Gentianopsis simplex Vernon H. Oswald; Lowell Ahart 1992-8-25 5186 Lassen Lassen Volcanic National Park. Grassy Creek on the S end of Snag Lake. 1851 Comment
  UC773888  Geranium viscosissimum L. R. Short and Wm. Gansberg 1936-6-12 S- 433 Lassen Burgess Spring Experiment Range Lassen Forest 1807 Comment
  HSC95165  Geum macrophyllum Gordon Leppig 1998-7-12 951 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM161476  Geum macrophyllum Franklin Nutting 1894-7-12 s.n. Lassen Pine Creek. Comment
  RSA454250  Geum macrophyllum Roch Well 1929-7-1 s.n. Lassen [Unspecified] Comment
  JEPS47198  Geum triflorum Frances D. Payne 1929-7-12 87 Lassen on ridge above Lost Lake (Upper Silver Creek, northwestern Lassen County); Warner Mountains, Upper Silver Creek 2286 Comment
  CHSC64798  Gilia inconspicua Vernon H. Oswald 1995-5-24 6768 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. Flat bordering the road. 1219 Comment
  JEPS107828  Gilia inconspicua Lowell Ahart, John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  JEPS94632  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen spur road on n side of Red Rock Rd. 0.6 mi e Hwy. 395 (s of Constantia) 1389 Comment
  JEPS94902  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen s of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); n side of Red Rock Road 1389 Comment
  CDA40032  Gilia inconspicua Vernon H. Oswald & Lowell Ahart 1998-6-4 9146 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. Comment
  UC1776720  Gilia leptomeria G. Schoolcraft 1998-6-8 2732 Lassen Lower slopes of amedee in gravel pit 1249 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
  NY1011680  Gilia polycladon G. Schoolcraft 1982-4-29 638 Lassen Amedee Canyon 1372 Comment
  SEINET3087473 Image available Gilia salticola Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert. 1448 Comment
  UC1562812  Gilia salticola Barbara Ertter with Gary Schoolcraft 1987-6-16 7189 Lassen on s side Hot Springs VABM (ne side Honey Lake, Skeedaddle Mountains); Skeedaddle Mountains, s side Hot Springs VABM 2286 Comment
  CHSC60756  Gilia sinuata Vernon H. Oswald; Lowell Ahart 1993-6-14 5545 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 dunes on the N side of the road. 1566 Comment
  CAS-BOT-BC280599  Glyceria elata John Thomas Howell; Gordon H. True 1973-8-1 50184 A Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  UC1483835  Gnaphalium palustre G. Schoolcraft 1980-7-22 Lassen nw of BLM fire station (along Hwy 395) 1630 Comment
  CAS-BOT-BC302588  Gnaphalium palustre Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amadee 1219 Comment
  CHSC31131  Grayia spinosa J. S. White 1980-4-14 118 Lassen On 2% s slope, 1 mi ne of Wendel. 1295 Comment
  UC585073  Grayia spinosa E. B. Babcock and G. L. Stebbins Jr. 1936-6-8 1777 Lassen 4 mi. s. Ravendale (n. end Secret Valley); n. end Secret Valley 1371 Comment
  CDA6056  Grindelia nana D. Sheehy 1990-8-17 Lassen Highway 395, south of Doyle, ca. 5 miles north of Hallelujah Junction. 0 Comment
  SJSU3576  Grindelia nana C. L. Kline 1965-7-13 195 Lassen State Rte 299, 1 mi NE of Nubieber 1274 Comment
  CHSC60757  Gymnosteris parvula Vernon H. Oswald; Lowell Ahart 1993-6-3 5485 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. In a meadow. 1731 Comment
  UC1533130  Gymnosteris parvula G. Schoolcraft 1986-5-14 1567 Lassen near road at stateline in Tuledad Canyon Tuledad Canyon 1524 Comment
Read comments
Nov 4 2011
  UC773869  Hackelia californica L. R. Short, J. Warren 1936-6-26 S 458 Lassen Burgess Spring Experiment Range; Lassen National Forest 1853 Comment
  CAS-BOT-BC231155  Hackelia cusickii Mrs. A S. Baldwin 1930-5-1 s.n. Lassen Coyote Creek lava bed Comment
  UC1583983  Hackelia cusickii G. Schoolcraft 1990-6-26 2097 Lassen sw of Ash Valley 1767 Comment
  CHSC7712  Halogeton glomeratus Jesse Langdon 1969-5-23 8 Lassen Stacey - 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  UC1042370  Halogeton glomeratus Tho. H. Kearney and John Thomas Howell 1951-8-20 28229 Lassen near Herlong; Honey Lake Valley 1280 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
  CDA3151  Halogeton glomeratus G. Randall 1953-9-2 Lassen Amedee. 0 Comment
  RSA97952  Halogeton glomeratus J. L. Myler, Les Berry 1954-8-17 s.n. Lassen Karlo. Comment
  UCD98889  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  CHSC12485  Hastingsia alba Carol Weld 1969-6-26 44 Lassen 7.8 miles S. W. of Eagle Lake Field Station. 1584 Comment
  UC1192217  Helianthus annuus Verne Grant and Irving Schneider 1947-7-31 8215 Lassen irrigation ditch ne quarter George Williams section 19; Madeline Plain Comment
  HSC69596  Helianthus annuus Gary Schoolcraft 1980-7-16 319 Lassen On Mud Flat on Hwy. 395 1341 Comment
  CDA18385  Helianthus bolanderi G. D. Barbe 1978-8-31 2424 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  CAS-BOT-BC305661  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC118791  Helianthus cusickii L. P. Janeway; B. Castro 2015-6-5 11755 Lassen Great basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  CAS-BOT-BC305785  Helianthus nuttallii Herbert L. Mason 1947-8-11 13492 Lassen Highway 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  POM360351  Hemizonia lobbii J. T. Howell 1934-7-3 12380 Lassen Big Valley, near Bieber Comment
  SEINET8734813 Image available Hemizonia pungens subsp. pungens Unknown 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  HSC65632  Hesperochiron californicus J. P. Smith, J. O. Sawyer 1971-5-23 4661 Lassen Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo Comment
  JEPS1678  Hesperochiron californicus G. S. Crew and C. S. Robinson 1927-1 10 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  UC1567384  Hesperochiron californicus G. Schoolcraft 1989-5-3 1866 Lassen s of Karlo (n end of Secret Valley); Secret Valley 1341 Comment
  SEINET5499822  Hesperochiron pumilus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CAS-BOT-BC180030  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Ash Creek Public Camp, off rd. from Adin to Madeline. Comment
  CHSC4793  Hesperolinon micranthum R. Carter 1967-6-29 570 Lassen On rd to Murrer's Meadow. Eagle Lake. Comment
  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
  POM87380  Hesperolinon micranthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC280678  Hesperostipa comata William Rothstrom 1975-6-9 s.n. Lassen Johnstonville. 1/4 mile south of Hwy. 395, west of airport 1264 Comment
  UC60155  Hesperostipa comata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  UC1562822  Heuchera rubescens Barbara Ertter with Gary Schoolcraft 1987-6-16 7201 Lassen ne side Honey Lake (between Hot Springs Peak and VABM); Skeedaddle Mountains 2255 Comment
  CAS-BOT-BC312311  Hieracium Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  UC1069594  Hieracium argutum H. P. Hagge 1929-9-18 39 Lassen Logan Mountain Eagle Lake Quad., Logan Mountain Comment
  UCD107499  Hieracium scouleri Tim Kuhn 2006-7-19 45 Lassen Eagle Lake Ranger District. Comment
  CHSC66245  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1996-6-24 7885 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Localized colony in shallow water in marshy meadow on the E side of Papoose Creek N of the springs. 1633 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
  CAS-BOT-BC280698  Holcus lanatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49501 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC63966  Holodiscus microphyllus var. glabrescens Teresa Prendusi 1980-7-10 Lassen N face of Little Fredonyer Peak, above Horse Lake 1768 Comment
  CAS-BOT-BC280893  Hordeum brachyantherum subsp. brachyantherum George W. Gillett 1957-7-29 951 Lassen Lassen Volcanic National Park. Trail between Butte Lake and Snag Lake 1859 Comment
  CHSC41842  Hordeum brachyantherum subsp. brachyantherum P. V. Caldwell 1972-7-12 273 Lassen 300 meters from Eagle Lake on Papoose Creek. Comment
  JEPS95804  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald and L. Ahart 1999-6-9 9751 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
  UC1100324  Hordeum brachyantherum subsp. brachyantherum Malcolm A. Nobs, S. Galen Smith 1949-7-21 1055 Lassen 4 mi N of Madelaine 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
  CHSC7694  Hordeum jubatum Beverley J. Wise 1969-6-4 131 Lassen 10 mi. east of Susanville on Hwy 395, Janesville cut in Hwy. 1310 Comment
  UC38637  Hordeum jubatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3299 Lassen Honey Lake Valley Comment
  UC1024656  Hordeum marinum subsp. gussoneanum Leo Whitney 1933-8-1 2198 Lassen ca 18 mi se Fall River Mills (Shasta County); Lassen National Forest, Black's Lake 1706 Comment
  UC188782  Hordeum marinum subsp. gussoneanum Milo S. Baker Lassen n side Dixie Mountains; n side Dixie Mountains Comment
  CAS-BOT-BC289574  Hordeum marinum subsp. gussoneanum John Thomas Howell 1973-7-10 49804 Lassen Near Susanville on road to Jonesville, Sierra Nevada 1295 Comment
  UC1924232  Hordeum murinum subsp. leporinum Debra Valov 2004-6-9 2004262 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  HSC26604  Horkelia tridentata var. flavescens D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19221 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC537967  Horkelia tridentata var. flavescens C. L. Hitchcock 1940-5-26 6597 Lassen Ca. 12 miles north of Fall River Mills. (Shasta Co.) on Fall River 1371 Comment
  CHSC21234  Hydrophyllum capitatum var. alpinum F. Tom Griggs; Robert A. Schlising 1974-5-30 3135 Lassen West side of Colman Lake, at margins of meadow. 1950 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
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  SEINET10472162  Hypericum formosum subsp. scouleri Mary Susan Taylor 1974-1 Taylor 283 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC5266  Hypericum formosum var. scouleri J. Wolf 1946-6-20 Lassen Eagle Lake, Grasshopper Valley. 1624 Comment
  UCD115194  Idahoa scapigera R. N. Raynor 1940-4-16 s.n. Lassen Big Valley. Comment
  JEPS816  Ipomopsis aggregata Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  UC106649  Ipomopsis aggregata T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  HSC17038  Ipomopsis aggregata Fred J. Kindel 1955-6-28 Lassen Susan River Comment
  CHSC12453  Ipomopsis aggregata subsp. formosissima Robert W. Severin 1969-7-10 46 Lassen Found on Galatin Peak, in burn area; 2 mi s of E.L.B.S. 1828 Comment
  RSA123124  Ipomopsis aggregata subsp. formosissima B. O. Schreiber 1936-6-25 S- 412 Lassen Burgess Spr. Exp. Range Comment
  RSA748951  Ipomopsis congesta J. R. Shevock, Barbara Ertter 1986-7-20 11741 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles W of Madeline and U.S. Hwy 395. 1550 Comment
  CHSC107328  Iris hartwegii subsp. hartwegii Lowell Ahart; John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley. 1264 Comment
  UC1609389  Isoetes howellii Vernon H. Oswald and Lowell Ahart 1993-6-28 5622 Lassen e Poison Lake (between Champs Flat and Harvey Valley, ne end of Little Harvey Valley, n of Hwy 44 along Rd 33N47, along small branch of Pine Creek); Little Harvey Valley 1737 Comment
  CAS-BOT-BC61865  Isoetes nuttallii John Thomas Howell 1974-7-10 50537 Lassen Elysian Valley 1325 Comment
  CHSC44875  Iva axillaris Lowell Ahart; John Thomas Howell 1974-7-9 529 Lassen Along the edge of Eagle Lake Road, about 3 miles north-west of Susanville. 1584 Comment
  CHSC7635  Iva axillaris Beverley J. Wise 1969-5-23 23 Lassen 34.5 mi. E of Susanville on La. Co. Rd. 320. 1249 Comment
  HSC5876  Iva axillaris M. T. Milligan 1964-8-6 203 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS109845  Ivesia webberi Dean W. Taylor 2004-5-11 19062 Lassen Seven Lakes Mountain, northwestern end flanking Dry Valley, along jeep road ca. 1 mile from Nevada State Line 1341 Comment
  CHSC5267  Juncus balticus 1944-6-26 Lassen Eagle Lake. 1584 Comment
  UCD141331  Juncus balticus subsp. ater John Thomas Howell 1959-9-23 34881 A Lassen North end of Juniper Lake. 2057 Comment
  JEPS88220  Juncus brachyphyllus Vernon H. Oswald and Lowell Ahart 1996-6-17 7805 Lassen n side og Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  JEPS121285  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2013-7-23 18907 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS96127  Juncus bufonius var. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-24 7838 Lassen ca 0.5 mi s Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC117203  Juncus hemiendytus var. hemiendytus Lowell Ahart; John Dittes 2016-6-7 20991 Lassen West edge of pond, 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  SD71006  Juncus howellii John Thomas Howell 1959-9-23 34880 Lassen North end of Juniper Lake. 2057 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
  UC1601786  Juncus nevadensis Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
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Jul 3 2013
  JEPS103213  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen North slopes of Skedaddle Mountains 1828 Comment
  RSA647524  Juncus nevadensis Marion P. Harthill 1974-6-14 1518 Lassen Madeline. 152 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
  UC1601819  Juncus tenuis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixis Mts. Dixie Mts. Comment
  CHSC87114  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
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Apr 29 2013
  SEINET5334982  Juniperus occidentalis W. Priest 1956-4-22 s.n. Lassen about 2 miles north of Susanville 1524 Comment
  SJSU11548  Kelloggia galioides J. W. Tilden 1960-6-27 1496 Lassen Westwood 1554 Comment
  CDA42199  Kelloggia galioides T. C. Fuller 1963-7-15 10906 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  SEINET12319533  Kelloggia galioides N. E. Heiken 1978-1 78 Lassen E shore of Mahogany L, S of Eagle L 2060 Comment
  NY539721  Kochia americana G. Schoolcraft 1998-9-14 2808 Lassen Honey Lake Valley northwest of Duck Lake 1219.2 Comment
  UCR244048  Kochia americana Jim Andre 1993-6-1 19718 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC180803  Kochia scoparia Louella Bass 1981-7-21 s.n. Lassen Standish Comment
  CAS-BOT-BC180850  Kochia scoparia Louella Bass 1981-9-29 s.n. Lassen Standish Comment
  CHSC89746  Koeleria macrantha L. P. Janeway 2004-6-26 8149 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
  POM113359  Koeleria macrantha Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  UC726003  Kyhosia bolanderi A. A. Heller 1938-9-1 15342 Lassen about 2 mi e of Westwood 1524 Comment
  CHSC76088  Lactuca tatarica subsp. pulchella Lowell Ahart; Vernon H. Oswald 1999-9-13 8233 Lassen On the strand of Eagle Lake, west of Highway 139, near the south end of the lake and highway, Eagle Lake. 1554 Comment
  JEPS88243  Lagophylla ramosissima Vernon H. Oswald and Lowell Ahart 1996-6-17 7782 Lassen ca. 7 mi w Susanville (along Bizz Johnson Trail at 7 mile post on n side of Hwy 36 between trail and highway bridges spanning Susan River); Modoc Plateau 1432 Comment
  CDA43007  Lamium amplexicaule L. Ahart, John Dittes 2008-6-2 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
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Oct 5 2019
  CHSC99304  Lamium amplexicaule Lowell Ahart; John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET8584733  Lappula redowskii var. cupulata W. Harnach 2010-6-1 1240 Lassen Honey Lake Valley, on Fort Sage Road then 1 mile N on Cal-Neva Road, Alturus powerline, ca 10 miles NE of Doyle. 1219 Comment
  UC864540  Lathyrus brownii A. A. Heller 1938-6-4 15148 Lassen 1 mi e Fredonyer Pass 1706 Comment
  UC1584016  Lathyrus lanszwertii var. aridus G. Schoolcraft 1990-5-15 2043 Lassen about 2 mi s Nubieber; John's Valley 1402 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
  SEINET11447828 Image available Layia glandulosa F. B. Headley 1915-5-28 s.n. Lassen Honey lake Comment
  CAS-BOT-BC321491  Layia glandulosa Milo S. Baker 1936-6-16 8360 Lassen About 30 mi N of Susanville along Hwy 395. Comment
  SEINET10473885  Layia glandulosa Mary Susan Taylor 1982-5-29 Taylor 4571 Lassen T22N R17E se/ne sec 11. Beckwourth Pass quad. Ca. 500 yds ne of the jct of Hwys 70 & 395 at Hallelula Jct, ca. 23 mi n of Reno. 5000 ft. 1524 Comment
  SEINET10759249  Layia glandulosa Billy Joe Cox 1971-6-2 Cox 3089 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
  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
  RSA318598A  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 Comment
  CAS-BOT-BC88820  Lepidium campestre Louella Bass 1973-6-15 110 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  POM94542  Lepidium dictyotum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CDA3797  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen Madelaine Plains , on east side of road, Highway 395 to Litchfield, 4.7 miles south of Ravendale. 0 Comment
  CHSC111251  Lepidium perfoliatum L. P. Janeway; B. Castro 2012-7-2 10936 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. Comment
  CHSC4915  Lepidium perfoliatum A. E. Anderson 1967-7-1 69 Lassen North side of road 0.5 mi. e of Murrer Ranch buildings. 1371 Comment
  CAS-BOT-BC12812  Lepidium perfoliatum Margaret Williams 1974-7-27 74 -L-48 Lassen Sierra Nevada. Near Hallelujah Junction west of Highway 70. 1493 Comment
  RSA152592  Lepidium perfoliatum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16332 Lassen 13.5 mi. E of Susanville. Comment
  UC584301  Leptodactylon pungens G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2284 Lassen summit and e slope of Diamond Mt. 2194 Comment
  SEINET7967451 Image available Leptosiphon ciliatus John Thomas Howell 1974-7-10 50560 Lassen Elysian Valley 1326 Comment
  SEINET8480557  Leucocrinum montanum M. J. Williams 1969-5-24 s.n. Lassen Hwy 44, near Bogart Ranger Station. 1646 Comment
  POM71468  Leucophysalis nana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC1136693  Lewisia nevadensis A. Simontacchi 1940-5-5 714 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat quadrangle Comment
  UC614395  Lewisia nevadensis L. Constance 1938-6-11 2326 Lassen 5 mi sw Susanville 1371 Comment
  CHSC64848  Lewisia rediviva Vernon H. Oswald 1995-6-26 6946 Lassen Modoc Plateau. Coyote Flat on Hunzinger Flat Rd. (FS 38N04) 5.6 mi s of its junction with Ash Valley Rd. (Lassen 527). 1783 Comment
  CAS-BOT-BC283772  Leymus cinereus John Thomas Howell 1974-7-8 50495 Lassen Susanville 1295 Comment
  JEPS68548  Leymus cinereus W. L. Jepson 1918-8-2 7795 Lassen Constantia Honey Lake Valley 1219 Comment
  RSA299613  Leymus cinereus J. T. Howell 1974-7-9 50495 Lassen Susanville; Sierra Nevada 1296 Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  UC1037138  Leymus triticoides Leo Whitney 1925-6-28 3364 Lassen Bieber Comment
  UC38251  Leymus triticoides J. Burtt Davy Jun 17 1897-Jun 24 1897 3320 Lassen Honey Lake Valley Comment
  HSC21517  Ligusticum grayi M. T. Milligan 1964-7-16 141 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  RSA0035910  Lilaea scilloides Lowell A. Ahart, John Dittes 2008-6-20 14943 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET4690760  Lilaea scilloides B. L. Wilson, D. Lytjen 2005-7-28 11484 Lassen Deep creek enar confluence with a smaller stream 1359 Comment
  CHSC60855  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1993-6-28 5602 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  JEPS114652  Limosella aquatica Lowell Ahart, John Dittes 2008-6-20 14927 Lassen Bottom of 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 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS120860  Limosella aquatica Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18755 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
  UC1123989  Linanthus ciliatus C. W. Hanks 1934-9-25 90 Lassen mts w Long Valley (near the Plumas National Forest); Sierraville Quad. 1767 Comment
  CHSC29901  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds. 1584 Comment
  CHSC60841  Linanthus pungens Vernon H. Oswald; Lowell Ahart 1993-6-28 5594 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC6204  Linanthus pungens 1944-7-9 Lassen Eagle Lake. Dow Butte. 2042 Comment
  RSA715980  Linum lewisii L. Ahart, John Dittes 2005-6-2 11935 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  UC1130238  Linum lewisii A. Simontacchi 1940-6-8 841 Lassen 4.1 mi e of Halls Flat Ranger Station (Lassen National Forest); Lassen National Forest 1737 Comment
  UC1136855  Linum lewisii L. R. Short and D. Gish 1936-6-5 S 385 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1760 Comment
  RSA38473  Lithophragma parviflorum P. A. Munz 1947-5-18 11862 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  JEPS119670  Lithospermum arvense Lowell Ahart, John Dittes 2012-7-11 18351 Lassen About 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittvile, 3955 feet east of Lassen - Shasta County Line, Fall River Valley. Comment
  JEPS107869  Lithospermum ruderale Lowell Ahart, John Dittes 2005-6-2 11932 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
  UC131185  Loeflingia squarrosa var. artemisiarum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CHSC7698  Lolium multiflorum Beverley J. Wise 1969-5-23 132 Lassen 34.8 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  SEINET8588544  Lomatium austiniae 2015-5-20 NV 030 -1058 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line 1460 Comment
  SEINET8588616  Lomatium austiniae S. Jesselson, A. Ortega, J. White, A. Rosenblum 2015-5-28 NV 030 -1064 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. 1547 Comment
  CHSC60806  Lomatium bicolor var. leptocarpum Vernon H. Oswald; Lowell Ahart 1993-6-28 5620 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
  CHSC66229  Lomatium bicolor var. leptocarpum Vernon H. Oswald 1996-6-24 7855 Lassen Papoose Meadows located ca.0.5 mi E of Eagel Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  CHSC65245  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen In rocky areas along U.S. Hwy. 395, 9.5 mi. north of Madeline. 1490 Comment
  SEINET7063559  Lomatium macrocarpum A. G. Vestal 1947-4-5 s.n. Lassen Hidden Valley south of Route 139. UTM Zone 11, 702975mE, 4478192mN. (WGS84/NAD83). 1295 Comment
  RSA724325  Lomatium macrocarpum Richard Halse 1977-5-22 1549 Lassen Along Highway 395, 9.5 miles north of Madeline 1490 Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  POM78183  Lomatium nevadense Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC66230  Lomatium nevadense var. nevadense Vernon H. Oswald; Lowell Ahart 1996-6-24 7862 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  CHSC93705  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2005-6-1 11847 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
  RSA0049670  Lomatium nevadense var. nevadense Dean Wm. Taylor 2012-5-15 21196 Lassen Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley) 1676 Comment
  UC1123082  Lomatium nevadense var. nevadense A. Simontacchi 1940-5-10 689 Lassen 7.3 mi. w. Harvey Mt. Lookout (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  CHSC108004  Lomatium nudicaule Lowell Ahart; John Dittes 2011-6-20 17497 Lassen About 40 yards east of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC60807  Lomatium nudicaule Vernon H. Oswald; Lowell Ahart 1993-6-28 5617 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  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
  RSA0049623  Lomatium ravenii Dean Wm. Taylor 2012-5-17 21208 Lassen Madeline Plains, at the western base of Juniper Ridge (ca. 5 miles E of Termo) 1615 Comment
  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
  UC1559672 Image available Lomatium ravenii Gary Schoolcraft 1988-5-4 1792 Lassen ca. 3 mi. s.e. Ravendale 1615 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
  RSA125336  Lomatium tracyi P. H. Raven, Otto T. Solbrig 1958-6-16 13248 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  POM78598  Lomatium triternatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  OBI81753  Lomatium triternatum Tracey Call, Viola Call 1961-5-30 2051 Lassen 2 miles north of Madeline Comment
  CHSC13733  Lomatium triternatum var. macrocarpum C. Freeman 1973-6-27 7 Lassen Collected roadside ca. 1 mi n of the road crossing. Comment
  SEINET222482  Lomatium triternatum var. macrocarpum Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8930 Lassen Upper Smoke Creek south side of Observation Peak 7.6 km northeast of Tye Patch Canyon summit 18.5 km airline distance 1700 Comment
  RSA0049637  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21245 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin) 1706 Comment
  GMDRC7741  Lotus corniculatus J. M. Andre, G. Clifton 1993-6-11 33422 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  JEPS88234  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7818 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, at 6.0 mi. post e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC1523783  Lotus oblongifolius var. oblongifolius Gary Schoolcraft 1981-7-14 534 Lassen s of Pittville (along Beaver Creek); Beaver Creek 1158 Comment
  JEPS107457  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2005-6-2 11970 -A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  UC1129240  Lotus purshianus var. purshianus A. Simontacchi 1940-6-30 903 Lassen 2.6 mi w Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  UC862221  Lotus purshianus var. purshianus A. A. Heller 1938-6-23 15199 Lassen slope e of Fredonyer Pass 1828 Comment
  POM253309  Lotus unifoliolatus A. A. Heller 1938-7-28 15300 Lassen Just east of Westwood. Comment
  CAS-BOT-BC198253  Lupinus John Thomas Howell 1976-7-19 51950 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  SEINET12765226  Lupinus arbustus Vernon H. Oswald 1997-6-24 8635 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. about midway between Aspen Flat and Red Rock Lookout.; 0 2249 Comment
  SEINET5327673  Lupinus arbustus H. Durio 1979-5-23 s.n. Lassen Meyers Ranch, Adin 1372 Comment
  SEINET10490460  Lupinus arbustus subsp. arbustus Katherine L. Morris 1973-5-25 Morris 211 Lassen 9.6 miles n of milford on us 395 in an area covered with artemisia, purshia, And rabbit bush Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  UCR119030  Lupinus argenteus subsp. argenteus Beecher Crampton 1954-7-6 2079 Lassen Modoc Plateau, Madeline. 1524 Comment
  UCD35223  Lupinus argenteus var. argenteus Beecher Crampton 1954-7-6 2079 Lassen Madeline. 1524 Comment
  CAS-BOT-BC208736  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21497 Lassen 7 1/2 miles north of Bogard Staton, Bogard Ranger Station, Lassen Forest 1500 Comment
  CAS-BOT-BC208749  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-15 8310 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC208756  Lupinus argenteus var. heteranthus Frank W. Peirson 1926-6-24 6852 Lassen Madeline Plains Comment
  CAS-BOT-BC208766  Lupinus argenteus var. heteranthus Beeson 1927-7-11 21470 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  CHSC71084  Lupinus argenteus var. heteranthus Vernon H. Oswald; Lowell Ahart 1998-5-22 9094 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  UC83091  Lupinus argenteus var. heteranthus T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  SEINET5327880  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6019 Lassen 3 mi W of Doyle Comment
  SEINET10969898  Lupinus brevicaulis David B. Dunn 1956-7-3 Dunn 11916 Lassen Coll. On a dry rocky slope with only an occasional juniper, considerable Artemisia tridentata. N side of the alkali flats, 31 mi. Ne of johnstonville On hwy 395. Comment
  SEINET10490607  Lupinus caudatus subsp. caudatus Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 863 Lassen Collected on road bank 24 mi n of calif. State line on hwy 395. Comment
  SEINET10936587  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11914 Lassen Collected at jct of hwy 395 and 36 near johnstonville. 6 Mi. E of susanville. Open valley with sparse artemesia tridentata, arid grassland well below Woodland. Comment
  SEINET10969761  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 511 Lassen 6 mi. N of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET530758  Lupinus caudatus var. caudatus Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  SEINET10940170  Lupinus confertus Thomas W. Nelson, Jane P. Nelson 1981-7-17 Nelson 6735 Lassen Along State Route 395, 22 mi S of Susanville, California, at milepost marker 46.80. Sagebrush scrub. Comment
  NY747197  Lupinus lepidus var. confertus R. F. Hoover 1940-10-1 4653 Lassen Janesville Comment
  SEINET249342  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395 ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC527349  Lupinus lepidus var. confertus C. B. Wolf 1931-9-6 2404 Lassen on the road to Wendel 1/2 mi from Janesville (western edge of Honey Lake Valley); western edge of Honey Lake Valley 1280 Comment
  CHSC117063  Lupinus lepidus var. confertus Mary De Decker 1955-8-25 262 Lassen Honey Lake: Highway 395 Comment
  UC1138211  Lupinus lepidus var. lobbii George A. Fischer and Irwin H. Johnson 1933-7-12 F 203 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  JEPS28491  Lupinus lepidus var. sellulus George W. Gillett 1957-9-4 1131 Lassen intersection of Widow Lake and Snag Lake trails (Butte Lake); Lassen Volcanic National Park, Butte Lake 1859 Comment
  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
  CHSC91606  Lupinus leucophyllus L. P. Janeway 2005-7-4 8473 Lassen High Cascade Range. 0.2 km south of Road 33N02 on low ridge between Burgess Spring and Dixie Spring, along Road 33N02C. 1746 Comment
  UC15910  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SEINET10488726  Lupinus leucophyllus Charles Piper Smith 1947-6-13 Smith 47448 Lassen Highway 299, adin, 1.3 mi west 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
  NY747426  Lupinus microcarpus G. Schoolcraft 1982-6-29 742 Lassen Along Highway 395 south of Madeline 1615 Comment
  CAS-BOT-BC202119  Lupinus nevadensis Gary Schoolcraft 1986-4-28 1526 Lassen Lower W. slopes of Ft. Sage Mtns. 1432 Comment
  JEPS103164  Lupinus nevadensis Beth Corbin 2002-4-11 1056 Lassen Skedaddle Ranch Rd, W of Skedaddle Ck, .5 mi NE of Spencer Ck Rd. 1310 Comment
  SEINET10486166  Lupinus polycarpus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17754 Lassen Approx 12 mi s of adin on state hwy. 139, In basalt and clay; along edge of Road on rolling knoll, in artemisia-juniper association. 1372 Comment
  SEINET6191823 Image available Lupinus sellulus subsp. sellulus B. J. Cox 1971-1 3186 Lassen 3 mi E of Westwood on CA 36 1608 Comment
  RSA32777  Lupinus subvexus var. subvexus A. A. Heller 1938-6-23 15219 Lassen Along U. S. H ighway 395 between Termo and Madeline. 1524 Comment
  UCSB48516  Madia Clare B. Hardham 1961-6-16 7451 Lassen collected at Gold Run Creek S of Susanville Comment
  POM253193  Madia bolanderi A. A. Heller 1937-9-1 15342 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  CAS-BOT-BC342645  Madia citrigracilis John Thomas Howell 1934-7-8 12494 Lassen Spalding's, Eagle Lake 1584 Comment
  SFV7754  Madia citrigracilis T. Gordon, K. Kimbrough 1975-8-15 1214 Lassen 16 miles south of Adin. 1402 Comment
  SFV7756  Madia citriodora T. Gordon, K. Kimbrough 1975-8-15 1212 Lassen 16 miles south of Adin. 1402 Comment
  SEINET11601338 Image available Madia elegans J. A. Young 1983-8-4 s.n. Lassen Janesville Comment
  CHSC44881  Madia gracilis Lowell Ahart; John Thomas Howell 1974-7-9 525 Lassen Along the edge of Eagle Lake Road, about 3 miles north-west of Susanville. 1584 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
  JEPS117590  Madia gracilis Lowell Ahart, John Dittes 2010-7-31 17006 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin Comment
  CAS-BOT-BC343054  Madia gracilis David D. Keck 1930-7-23 949 Lassen Susanville 1280 Comment
  CAS-BOT-BC343061  Madia gracilis Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale 1680 Comment
  CHSC12430  Malva neglecta Robert W. Severin 1969-6-25 18 Lassen 1 3/4 mi e E.L.B.S. along road to Murrer's Upper Meadow, 1/2 mi from road to station. 1584 Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  RSA647538  Matricaria matricarioides Marion P. Harthill 1972-6-16 783 Lassen Doyle 1372 Comment
  CHSC93666  Medicago lupulina Lowell Ahart; John Dittes 2005-6-2 11966 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  RSA715988  Medicago lupulina L. Ahart, John Dittes 2005-6-2 11966 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CAS-BOT-BC271118  Melica bulbosa G. Schoolcraft 1995-5-17 2490 Lassen Three Springs on S slope of Five Springs Mtn. 1524 Comment
  UCD86363  Melica bulbosa B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  SEINET4671551  Melica bulbosa H. Durio 1979-5-23 s.n. Lassen Adin, Meyers Ranch 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
  UC972185  Melica fugax Milo S. Baker 1952-5-23 12427 Lassen e of Chester (Highway 36) Comment
  UC972186  Melica fugax Milo S. Baker 1952-4-24 12411 Lassen ca 15 mi e Chester (at old road quarry) Comment
  UC1158682  Melica stricta Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8468 Lassen 50 mi se Susanville 1371 Comment
  CHSC112987  Melilotus officinalis Lowell Ahart; John Dittes 2013-7-22 18868 Lassen On the sides of the levee road, about 100 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CDA40725  Mentha canadensis T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20383 Lassen West end of the dam of Smoke Creek Reservoir. 0 Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 Comment
  CHSC25305  Mentzelia albicaulis Pauleen Broyles 1977-6-1 152 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  JEPS29743  Mentzelia albicaulis Rimo Bacigalupi and L. R. Heckard 1962-5-28 8498 Lassen 2.7 mi n Milford (along U.S. highway 395) 1219 Comment
  HSC31748  Mentzelia congesta Donald Spalinger 1974-5-16 61 Lassen 300 yds. S of intersection of Rd. A3 and H 395 1250 Comment
  CHSC117298  Mentzelia dispersa Lowell Ahart; John Dittes 2016-7-13 21124 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 at the southern slope of Big Valley. 1289 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
  CHSC13731  Mentzelia laevicaulis S. Villard 1973-7-18 54 Lassen Hwy. 139 4 mi. N of Susanville on E side of road. Comment
  CHSC5301  Mentzelia laevicaulis M. West 1946-7-17 Lassen Antelope Grade, near Susanville. Eagle Lake. 1615 Comment
  SEINET5333248  Mentzelia laevicaulis R. H. Miller 1954-8-27 1116 Lassen On U.S. 395, 3 miles north of Doyle. 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
  SBBG2836  Micranthes integrifolia H. and M. Dearing 1938-6-30 2232 Lassen Box 20 mi N of Susanville [Hwy 44] 1066 Comment
  CAS-BOT-BC429080  Micranthes odontoloma George W. Gillett 1957-7-22 886 Lassen Lassen Volcanic National Park. Snag Lake. Near campsite at south end of Lake. 1850 Comment
  SD8330  Micranthes odontoloma Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
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Apr 29 2013
  CAS-BOT-BC429184  Micranthes oregana John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49424 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC6266  Micranthes oregana M. West 1946-7-12 Lassen Stephens Ranch. 1905 Comment
  CHSC66261  Micranthes oregana Vernon H. Oswald; Lowell Ahart 1996-6-24 7889 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  OBI76931  Microseris laciniata Anthony Baniaga 2011-7-9 434 Lassen Lassen Natl forest. SW Pine Crk Valley. Pine Crk valley quad T31N R8E sec 10 NE of NE 1715 Comment
  JEPS118157  Microseris laciniata subsp. laciniata Dean W. Taylor 2009-5-21 20606 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  UC563094  Microseris laciniata subsp. laciniata Elmer I. Applegate 1929-6-24 5879 Lassen near Bieber; Big Valley, Gumbo Flat Comment
  CHSC117189  Microseris nutans Lowell Ahart; John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC1070115  Microseris nutans A. Simontacchi 1940-5-28 782 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1752 Comment
  CAS-BOT-BC349299  Microseris nutans Elmer I. Applegate 1929-6-21 5778 Lassen Kelly's Camp, Warner Valley, Mt. Lassen region Comment
  CAS-BOT-BC349302  Microseris nutans G. Schoolcraft 1993-6-29 2317 Lassen Ash Valley, 16 mi E. of Adin 1554 Comment
  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
  CDA41658  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen East side of Poison Lake, 50 meters west of Pitville Road, 1.8 miles northwest of Highway 44, east of railroad track and wet ditch. Comment
  UC1063535  Mimulus breweri A. Simontacchi 1940-5-28 786 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS94563  Mimulus mephiticus Vernon Oswald and Lowell Ahart 1997-6-24 8597 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 Comment
  UC773851  Mimulus microphyllus L. R. Short and J. Warren 1936-6-10 S- 417 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1856 Comment
  SEINET10756203 Image available Mimulus nanus var. jepsonii Willis L. Jepson 1910-6-10 Jepson 4112 Lassen Twin Lakes (Grassy Lake). 2225 Comment
  HSC22945  Mimulus nanus var. mephiticus John Pratt 1970-6-27 48 Lassen 0.5 mi. E of Turtle Head 1220 Comment
  JEPS29741  Mimulus nanus var. mephiticus Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8496 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  LA95554  Mimulus nanus var. mephiticus Frank W. Peirson; 6853 Lassen Madeline Plain Comment
  UC886157  Mimulus nanus var. mephiticus A. A. Heller 1938-6-22 15188 Lassen about 1 1/2 mi s Westwood 1524 Comment
  UC1553406  Mimulus nanus var. nanus Gary Schoolcraft 1988-6-20 1813 Lassen 16 mi w Madeline; Ash Valley 1584 Comment
  UC1609130  Mimulus nanus var. nanus Vernon H. Oswald and Lowell Ahart 1993-6-3 5482 Lassen 1.8 mi n Lassen 21 (32N02) to Eagle Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), nw edge of valley, between Poison Lake and Susanville); Pine Creek Valley 1728 Comment
  JEPS88207  Mimulus pulsiferae Vernon H. Oswald and Lowell Ahart 1996-6-24 7865 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake; Modoc Plateau, Montane Meadow in Yellow Pine Forest. On the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  RSA536394  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-18 627 Lassen Gray's Valley, 4 miles N of USFS Bogard Work Center. 1715 Comment
  UC1609384  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1993-6-14 5522 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89)); Eagle Lake 1566 Comment
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Nov 22 2007
  JEPS97367  Mitella pentandra Vernon H. Oswald and L. Ahart 1995-7-24 7142 Lassen T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. 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 1905 Comment
  CAS-BOT-BC221780  Monardella odoratissima Gordon H. True 1936-6-27 552 Lassen Between Bull Flat and Hot Spring Mt. 1524 Comment
  CHSC52767  Monardella odoratissima subsp. glauca L. P. Janeway 1990-7-4 3771 A Lassen Ca 0.9 mi NE of Meadowview Peak. 1981 Comment
  JEPS95713  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, 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
  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
  RSA505703  Monardella odoratissima subsp. glauca G. H. True 1938-7-14 961 Lassen Milford Grade, just noth of summit. 1768 Comment
  SEINET3152591  Monardella odoratissima subsp. glauca L. S. Rose 1940-6-15 40593 Lassen 10 mi. N of Susanville, Round Valley. 1524 Comment
  UC1537598  Monardella odoratissima subsp. glauca Gordon H. True Jr. 1936-6-27 552 Lassen between Bull Flat and Hot Spring Mountain 1524 Comment
  UCD18952  Monardella odoratissima subsp. glauca Raymond D. Ratliff 1965-8-5 44 Lassen Lassen National Forest, Harvey Valley Allot. (HV 20-14 'area'). 1725 Comment
  UC295853  Monardella odoratissima subsp. glauca H. M. Hall 1925-8-30 12213 Lassen 27 mi s Alturas Comment
  UCD125203  Monardella odoratissima subsp. glauca John F. Sorenson 1986-7-5 s.n. Lassen 9 miles southeast of Termo, Bailey Creek drainage; Bailey Creek above Bailey Reservoir. Comment
  CHSC45231  Monardella odoratissima subsp. pallida P. V. Caldwell 1972-7-8 269 Lassen Eagle Lake. Rd 32N02 about 2 mi from Summit Camp. Comment
  JEPS63401  Monardella odoratissima subsp. pallida Jos. Grinnell 1928-6-28 Lassen Near Butte Lake 1889 Comment
  RSA18163  Monardella odoratissima subsp. pallida Carl B. Wolf 1929-9-1 3782 Lassen Mt. Lassen Nat l Park, between Grassy Lake and Snag Lake. Comment
  UC506977  Monardella odoratissima subsp. pallida George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen Forest 1722 Comment
  SDSU5609  Monolepis nuttalliana D. F. Howe 1964-7-31 3903 Lassen Modoc National Forest 10.2 miles from entrance on road from Likely. 1768 Comment
  POM203792  Monolepis pusilla J. T. Howell 1934-6-10 11895 Lassen Horse Lake Comment
  CAS-BOT-BC444626  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  HSC75892  Montia chamissoi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19155 Lassen 3 mi. N of Westwood Comment
  UC1136742  Montia chamissoi Robert W. Gardner 1937-6-14 G 3 Lassen Burgess Spring Experimental Range 1767 Comment
  CAS-BOT-BC445065  Montia linearis Louella Bass 1973-5-29 55 Lassen Elysian Valley. 1325 Comment
  RSA122965  Montia linearis L. R. Short, Wm Gansberg 1936-6-8 s 392 Lassen Burgess Spring Exp. Range 1744 Comment
  UC1951065  Montia linearis Debra Valov 2007-5-22 2007075 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  UC1024657  Muhlenbergia andina Leo Whitney 1934-7-24 2195 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  CAS-BOT-BC262636  Muhlenbergia asperifolia C. S. Robinson 1928-9-18 120 Lassen Lassen National Forest. Hanna Estate, Morgan Springs. Around Sulphur Springs 1508 Comment
  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
  CHSC93667  Muhlenbergia asperifolia Lowell Ahart; John Dittes 2005-6-2 11972 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  RSA129322  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6072 Lassen Baxter Creek 1280 Comment
  UC1137155  Muhlenbergia asperifolia August L. Hormay 1932-8-12 Lassen se edge of lake Lassen National Forest, Eagle Lake Comment
  UCD86529  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  CDA32541  Muhlenbergia filiformis Gordon Leppig 1998-7-12 958 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  UC163592  Muhlenbergia filiformis Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  UC163551  Muhlenbergia jonesii Milo S. Baker Lassen Eagle Lake Comment
  UC60836  Muhlenbergia jonesii M. S. Baker and Frank Nutting 1894-7-30 Lassen near Silver Lake Comment
  RSA0115568  Muhlenbergia richardsonis Jim M. Andre, G. Clifton 1993-6-11 33424 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale. 1545 Comment
  UC506980  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 224 Lassen Stringer Mdw. Lassen National Forest 1722 Comment
  UCD39732  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 Comment
  UCD86899  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 Comment
  CHSC64813  Muilla transmontana Vernon H. Oswald 1995-5-31 6810 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.7 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  JEPS107463  Muilla transmontana Lowell Ahart, John Dittes 2005-6-1 11855 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
  HSC63965  Muilla transmontana Teresa Prendusi 1980-5-8 Lassen Balls Canyon N of Shaffer Mtn. 6 mi. W of Hwy. 395 1372 Comment
  RSA715554  Myosotis discolor L. Ahart, John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  UC1924589  Myosurus apetalus Debra Valov 2006-5-29 2006019 Lassen Bieber California, Lassen Co., Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  NY492651  Myosurus apetalus var. montanus N. H. Holmgren 1978-6-11 8913 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  CAS-BOT-BC83318  Myosurus minimus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49489 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CHSC107334  Myosurus minimus Lowell Ahart; John Dittes 2011-6-21 17526 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  UC1924226  Myosurus minimus Debra Valov 2004-6-8 2004248 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC4844  Myriophyllum sibiricum R. Carter 1967-7-13 592 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CHSC77218  Myriophyllum sibiricum G. Schoolcraft 1996-7-10 2532 Lassen Willow Creek- northeast of Susanville. 1432 Comment
  HSC13476  Myriophyllum verticillatum Fred J. Kindel 1955-7-8 Lassen Mt. Meadows Reservoir, Westwood Comment
  UC133072  Nama aretioides var. multiflora Dr. Gustav Eisen 1891-1 Lassen Honey Lake Comment
  UC585170  Nama aretioides var. multiflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1773 Lassen Red Rock 1280 Comment
  UC773905  Navarretia breweri L. R. Short and J. Warren 1936-6-5 S- 374 Lassen Burgess Spring Experiment Range Lassen Forest 1798 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
  CHSC6208  Navarretia divaricata W. Vinyard 1946-6-12 Lassen Eagle Lake. Willow Creek. 1371 Comment
  CHSC99105  Navarretia intertexta Lowell Ahart; John Dittes 2008-6-22 15028 Lassen Along a small natural drainage, 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
  POM74438  Navarretia intertexta Marcus E. Jones 1897-6-18 10111 Lassen Chat. 1524 Comment
  CHSC34346  Navarretia intertexta subsp. propinqua K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5808 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  UC1184059  Navarretia intertexta subsp. propinqua Jean Langenheim 1957-6-22 4366 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  UC1594648  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5101 Lassen 1.2 mi se County Rd. A21 (Long Lake on the s of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  CHSC1252  Navarretia leptalea K. Chew 1951-7-8 Lassen Stephens Meadows, Pine Creek. 1706 Comment
  CHSC4760  Navarretia leptalea R. Carter 1967-7-14 615 Lassen Roadside on N side of rd. Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  RSA67608  Navarretia leptalea Verne Grant, Alva Grant 1950-7-13 8943 Lassen Camp Fredonyer, on road from Westwood to Susanville 1524 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
  JEPS19814  Navarretia leucocephala subsp. minima Rimo Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  UC1058208  Navarretia leucocephala subsp. minima C. McMillan 1949-6-15 1542 Lassen 5 mi w Bieber Comment
  UC1137584  Navarretia leucocephala subsp. minima A. Simontacchi 1940-6-15 872 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC908650  Navarretia leucocephala subsp. minima Lincoln Constance 1946-7-3 Lassen Madeline Station Comment
  SEINET2440302  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2005-7-28 05 -220 Lassen Lassen Natl. Forest, NE Long Lake vicinity. Off Hwy 44 at mile marker 20.74. Along 31N01 leading to NE edge of lake.; 0 1712 Comment
  UC773906  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  SEINET14160494  Navarretia sinistra D. W. Taylor 2012-7-18 21281 Lassen Cascade Ranges, Windmill Flat (9tributary Juniper Creek, Pit River watershed, 11 miles S of Adin), Letterbox Hill. 1707 Comment
  CHSC117190  Nemophila pedunculata Lowell Ahart; John Dittes 2016-6-7 21010 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valleuy Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CHSC99497  Nemophila pedunculata Lowell Ahart; John Dittes 2008-6-20 14918 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
  JEPS118279  Nemophila pedunculata Lowell Ahart, John Dittes 2011-6-20 17481 Lassen On old gopher mounds, meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  HSC30192  Nemophila spatulata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19156 Lassen 3 mi. N of Westwood Comment
  CHSC4786  Neoholmgrenia andina R. Carter 1967-6-29 572 Lassen On roadside, N side of Rd. Along road to Murrer's Meadow, Eagle Lake. 1584 Comment
  CHSC44642  Nestotus stenophyllus J. D. Jokerst 1983-5-30 1795 Lassen Ca. 1.5 miles north of the north edge of Eagle Lake ca. 1.0 mile N of Eagle Lake Rd 50 meters west of Highway 139. Comment
  HSC68171  Nestotus stenophyllus J. P. Smith, J. O. Sawyer 1971-5-23 4659 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  UC1137647  Nestotus stenophyllus A. Simontacchi 1940-5-17 749 Lassen 1.1 mile SSW of Dixie Spring 1699 Comment
  UC1745659  Nicotiana attenuata Annetta M. Carter 1945-9-30 1722 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  HSC4506  Nitrophila occidentalis Fred J. Kindel 1955-7-14 Lassen Wendel Comment
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 Comment
  UC682109  Nothocalais troximoides G. L. Stebbins Jr. with A. A. Beetle 1942-5-30 3238 Lassen on road to Adin 5.2 mi e Bieber 1280 Comment
  RSA0009447  Nuphar lutea subsp. polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC566272  Oenothera deltoides subsp. piperi E. Sawyer 1935-6-27 231 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  UC70345  Oenothera deltoides subsp. piperi Milo S. Baker 1890-1 Lassen Milford Comment
  POM38743  Oenothera deltoides subsp. piperi Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  UC1562804  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved rd) 1524 Comment
  RSA271917  Onobrychis viciifolia Christopher Davidson 1975-6-7 2749 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CAS-BOT-BC349945  Onopordum acanthium O. Havens 1963-8-9 s.n. Lassen P. S. Hall ranch, Doyle Comment
  CAS-BOT-BC350039  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen About a mile east of Westwood 1524 Comment
  CAS-BOT-BC350046  Oreostemma alpigenum var. andersonii John Thomas Howell 1934-7-9 12515 Lassen Bridges Creek Spring Comment
  UC1136756  Orobanche corymbosa subsp. corymbosa L. R. Short and J. Warren 1936-6-30 S- 465 Lassen NW of Eagle Lake, Burgess Spring Experiment Range. Comment
  CAS-BOT-BC502937  Orobanche uniflora G. Schoolcraft 1999-4-21 2813 Lassen On E. Bald Mtn about 10 mi SE of Susanville 1341 Comment
  SEINET10549655  Orthocarpus copelandii Mary Susan Taylor 1974-1 Taylor 307 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  POM44324  Orthocarpus cuspidatus subsp. copelandii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC13631  Orthocarpus cuspidatus subsp. cryptanthus M. S. Taylor 1974-7-13 307 Lassen Ca. 15 ft w of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC37345  Orthocarpus cuspidatus subsp. cryptanthus J. D. Prouty 1978-6-28 5 Lassen Lower Dry L., SE of Eagle L. 1645 Comment
  RSA165526  Orthocarpus hispidus Clare B. Hardham 1961-6-17 7501 Lassen Baxter Creek S of Susanville. Comment
  CHSC78408  Oryzopsis exigua Vernon H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 2000-6-18 9929 Lassen East-northeast of the lookout on Observation Peak located east of Ravendale. 2377 Comment
  UC1483840  Osmorhiza berteroi G. Schoolcraft 1979-8-2 178 Lassen Tule Mountain; top, Bureau of Land Management 2133 Comment
  UC1776707  Osmorhiza occidentalis G. Schoolcraft 1994-7-7 2447 Lassen About 1 mile W of Boot Lake 2407 Comment
  POM105807  Oxytheca dendroidea Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CHSC35585  Packera cana G. Schoolcraft 1979-7-11 143 Lassen South face of Observation Peak. 2316 Comment
  HSC42421  Packera eurycephala Barbara Kelly 1977-8-8 548 Lassen Ash Creek Campground Comment
  CAS-BOT-BC316858  Packera eurycephala var. eurycephala C. C. (Mrs.) Bruce 1898-6-1 2176 Lassen Shumway Comment
  CHSC6195  Paeonia brownii P. Balch 1955-7-22 Lassen Roadside meadow 3 1/2 mi. from Antelope Lookout. Eagle Lake. 2133 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
  UCD89807  Panicum capillare subsp. hillmanii John Thomas Howell 1973-7-10 49808 Lassen Doyle. Comment
  SEINET229883 Image available Pappostipa speciosa G. Schoolcraft 1982-6-22 721 Lassen N end of Fort Sage Mts. 1524 Comment
  CAS-BOT-BC259609  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE of Shaffer Mountain 1356 Comment
  CAS-BOT-BC259613  Pascopyrum smithii James Jokerst 1983-7-25 1886 Lassen Near Madeline Plains 1614 Comment
  CHSC65122  Pectiantia pentandra Vernon H. Oswald; Lowell Ahart 1995-7-24 7142 Lassen 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. 1905 Comment
  JEPS68204  Pectocarya penicillata W. L. Jepson 1918-8-2 7770 Lassen Beckwith Pass 1463 Comment
  UC1258487  Pectocarya penicillata G. Schoolcraft 1980-5-8 231 A Lassen e Herlong; Bureau of Land Management 1219 Comment
  JEPS79152  Pedicularis attollens L. R. Heckard with R. Bacigalupi 1980-6-12 5259 Lassen just ne of Westwood (near golf course) 1554 Comment
  JEPS94553  Pedicularis groenlandica Vernon Oswald and Lowell Ahart 1997-6-24 8652 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CHSC5004  Pedicularis semibarbata K. C. Newman 1967-7-14 80 Lassen Collected near Silver Lake, along the road just past the picnic area in dry soil. 1828 Comment
  UC1125741  Pedicularis semibarbata A. Simontacchi 1940-5-27 727 Lassen 9.3 mi nw of Crater Lake; Lassen National Forest 1752 Comment
  UC1523781  Pedicularis semibarbata G. Schoolcraft 1981-6-30 487 Lassen western slopes of Roop Mountain 1889 Comment
  UC773852  Pedicularis semibarbata L. R. Short, J. Warren 1936-6-9 S 410 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  SD6613  Pedicularis semibarbata Mrs. R. M. Austin 1880-1 Lassen Dutch Hill Comment
  RSA6481  Penstemon D. D. Keck 1930-7-23 953 Lassen 4 miles west of Susanville, nearly to the divide; but not seen on western watershed. 1463 Comment
  CHSC80281  Penstemon deustus Jeanne Boze 1981-6-12 119 Lassen 0.25 mi south of Eagle Lake Field Station. 1615 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
  POM195123  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 953 Lassen 4 miles west of Susanville, nearly to the divide; but not seen on western watershed. 1463 Comment
  CHSC61241  Penstemon deustus var. pedicellatus P. V. Caldwell 1972-6-15 222 Lassen 10 ft n of Lecture Lab. entrance. Eagle Lake Field Station. 1554 Comment
  CHSC93676  Penstemon deustus var. pedicellatus Lowell Ahart; John Dittes 2005-6-2 11979 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
  JEPS29103  Penstemon deustus var. pedicellatus Lauramay T. Dempster 1961-6-17 1679 Lassen Highway 395 just w Tule Mt.; just w of Tule Mt. 1645 Comment
  CHSC14190  Penstemon gracilentus M. S. Taylor 1974-7-10 276 Lassen Abundant in meadow ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC23498  Penstemon gracilentus Wayne O. Baum 1971-7-7 71 -85 Lassen E. slope of Gallatin Peak. 1981 Comment
  HSC69068  Penstemon gracilentus Gary Schoolcraft 1980-8-13 352 Lassen N face of Diamond Mtn., S of Susanville 1982 Comment
  JEPS27801  Penstemon gracilentus Frances D. Payne 1929-7-12 81 Lassen Lost Lake e drainage..Warner Range, Skunkcabbage and Silver Creeks... (watersheds of Skunkcabbage and Silver Creeks, eastern drainage of the s end of the Warner Range) 2286 Comment
  NY600695  Penstemon gracilentus G. H. True Jr. 1938-7-14 959 Lassen Summit on Milford Grade, just on north slope 1676.4 Comment
  NY600697  Penstemon gracilentus K. A. Vincent 1986-7-19 4382 Lassen Sierra Nevada, Roop Mountain; along CA A1 at Eagle Lake Summit, ca. 7.6 miles north of junction CA 36, ca. 7 air miles northwest of Susanville. 1932.4 Comment
  SEINET272361 Image available Penstemon gracilentus Karl Vincent, Charlott Labbe 1986-7-19 4382 Lassen Sierra Nevada Roop Mtn.; common in burned area in pine-spruce forest along CA A1 at Eagle Lake Summit ca 7.6 mi N of j 1932 Comment
  SEINET5328215 Image available Penstemon gracilentus G. Schoolcraft 1994-7-7 2370 Lassen about 1 mi W of Boot Lake 235 Comment
  CHSC23709  Penstemon heterophyllus var. purdyi Robert Smallwood 1970-6-27 123 Lassen Dean's Meadow. North east edge. Comment
  CHSC66733  Penstemon neotericus Vernon H. Oswald; Lowell Ahart 1996-8-1 8118 Lassen Junction of Forest Rd. 28N56 (D-line) and the spure road to Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1536 Comment
  JEPS9341  Penstemon neotericus George W. Gillett 1953-7-13 272 Lassen Westwood Junction, Highway 36 Lassen National Forest, Westwood Junction, Highway 36 (open areas near road) 1562 Comment
  UC1523710  Penstemon neotericus Gary Schoolcraft 1981-7-9 502 Lassen e slope of Roop Mtn. Comment
  UC887183  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mi s Westwood; s of Westwood 1524 Comment
  RSA21708  Penstemon neotericus Carl B. Wolf 1937-8-7 9068 Lassen Northern Sierra Nevada. Red Bluff -Susanville Road, 11.5 mi E of Chester. 1494 Comment
  JEPS7228  Penstemon newberryi var. newberryi W. L. Jepson 1910-6-11 4116 Lassen Cinder Cone 2133 Comment
  CHSC36494  Penstemon roezlii Theresa Costa 1982-6-4 32 Lassen Ca. .5 mi e of Murrers Upper Meadow, heading towards meadow. Comment
  NY641735  Penstemon roezlii K. A. Vincent 1986-6-14 4321 Lassen Upper Long Valley; along east side of US 395, ca. 5.5 miles north of jct. US 70, ca. 13.2 road miles north of Bordertown and Nevada state line 1463.0 Comment
  POM268103  Penstemon roezlii H. C. Cantelow 1941-5-22 s.n. Lassen North of Litchfield, US Hwy 395. Comment
  RSA668002  Penstemon roezlii Karl Vincent 1986-6-14 4321 Lassen Upper Long Valley, along E side of US 395, ca 5.5 mi N of jct US 70, ca 13.2 rd mi N of Bordertown and Nevada state line. 1463 Comment
  UC1063511  Penstemon roezlii A. Simontacchi 1940-6-20 851 A Lassen 4.1 mi w Harvey Mountain Lookout; Lassen National Forest, Hall's Flat Quad. Comment
  NY641729  Penstemon roezlii A. J. Cronquist 1959-6-17 8470 Lassen 50 miles southeast of Susanville. 1371.6 Comment
  NY650103  Penstemon roezlii J. T. Howell 1974-7-30 50689 Lassen Slope south and southeast of Diamond Mountain 2225.0 Comment
  RSA299199  Penstemon roezlii J. T. Howell, Gordon H. True, Wayne Dakan 1974-7-30 50689 Lassen South and southeast of Diamond Mtn. 2226 Comment
  CAS-BOT-BC239502  Penstemon rydbergii var. oreocharis Al Simontacchi 1940-6-3 792 Lassen Lassen National Forest, 8.3 miles SE of Alcohol Jacks Cabin 1706 Comment
  CHSC107320  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2011-6-20 17502 Lassen Meadow, about 40 yards west of the stream, about 50 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
  CHSC27679  Penstemon rydbergii var. oreocharis J. D. Prouty 1978-7-27 28 Lassen W of Eagle L. in small swale just n of Rd 105 on E margin of Champs Flat. 1694 Comment
  CHSC59826  Penstemon rydbergii var. oreocharis Mary Meyer 1980-7-9 Lassen In dry meadows 1 mi northwest of Horse Camp Spring. 1706 Comment
  JEPS114709  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2008-6-20 14919 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
  JEPS124372  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2015-7-13 20316 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS12898  Penstemon rydbergii var. oreocharis G. S. Crew and C. S. Robinson 1927-7-1 49 Lassen Bogard R.S. pasture Lassen Forest <sw?>, Bogard R.S. pasture 1712 Comment
  SJSU7940  Penstemon rydbergii var. oreocharis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline Comment
  UC54980  Penstemon rydbergii var. oreocharis J. B. Davy Lassen Amedee Comment
  CHSC13894  Penstemon speciosus L. E. Ray 1967-6-24 33 Lassen Collected ca. 3 mi. se ELBS, above Upper Murrer Meadow. 1524 Comment
  CHSC4821  Penstemon speciosus R. Carter 1967-7-21 625 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Diamond Mountains. Comment
  CHSC64811  Penstemon speciosus Vernon H. Oswald 1995-5-31 6812 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.0 mi e of Hwy. 395, between Litchfield and Ravendale. 1341 Comment
  HSC63768  Penstemon speciosus Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N tip of Eagle Lake 1768 Comment
  NY661010  Penstemon speciosus L. Constance 1938-6-11 2331 Lassen 3.5 miles north of Secret Valley, Madeline Plains on Susanville-Alturas road 1524.0 Comment
  RSA17709  Penstemon speciosus Elmer I. Applegate 1934-5-4 8932 Lassen South end of Secret Valley Comment
  UC1012478  Penstemon speciosus Francis W. Pennell 1940-6-9 25753 Lassen Route 395, 5 mi n Madeline; n of Madeline 1676 Comment
  UC1036208  Penstemon speciosus George W. Gillett July 1953 273 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass (Highway 36) 1752 Comment
  UC1226034  Penstemon speciosus Arthur Cronquist, Arthur H. Holmgren 1959-6-16 8455 Lassen 26 mi nw Reno; nw of Reno Comment
  UC1583941  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen sw slopes of Cold Spring Mtn. 1889 Comment
  UC54978  Penstemon speciosus Jos. Burtt Davy Lassen Amedee Comment
  NY660811  Penstemon speciosus D. W. McNeal 1983-6-5 2836 Lassen Road bank beside Highway #395, 9.2 miles north of the Plumas Co. line. Comment
  NY660820  Penstemon speciosus H. D. D. Ripley 1943-6-13 5672 Lassen South of Constantia 1463.0 Comment
  RSA305777  Penstemon speciosus James R. Shevock 1972-5-20 1815 Lassen Near Ravendale, Hwy 395. 1220 Comment
  UC1012214  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi n of junction with Route #24 (ne of Plumas); ne of Plumas 1524 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
  NY661798  Penstemon sudans F. W. Pennell 1940-6-9 25768 Lassen Route 36. Hill, west of Susanville 1371.6 Comment
  NY661801  Penstemon sudans D. D. Keck 1930-7-23 948 Lassen Susanville 1280.2 Comment
  NY661802  Penstemon sudans W. W. Eggleston 1911-7-7 7177 Lassen Secret Valley 1330 Comment
  UC1561843  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains 1828 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
  UC2027331  Penstemon venustus Anthony Baniaga and R. Bomberger 2011-7-28 479 Lassen Lassen National Forest. Along Highway 36. Fredonyer Pass quadrangle Comment
  NY850110  Peraphyllum ramosissimum G. Schoolcraft 1984-6-11 1207 Lassen Hills east of Bull Flat 1585 Comment
  RSA59742  Peraphyllum ramosissimum E. K. Balls 1950-5-19 14789 Lassen 1.6 miles S of Modoc county line, Hwy. 395, between Madeline and Likely. 1463 Comment
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  CHSC64859  Perideridia bolanderi subsp. bolanderi Vernon H. Oswald; Lowell Ahart 1995-6-19 6900 Lassen Modoc Plateau. Between Litchfield and Rravendale on Smoke Creek Ranch Rd., 7.6 mi e of Hwy. 395. 1444 Comment
  UC1123141  Perideridia bolanderi subsp. bolanderi A. Simontacchi 1940-6-11 846 Lassen 3.7 mi sse Black Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS117493  Perideridia kelloggii Lowell Ahart, John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  CAS-BOT-BC222762  Perideridia parishii Clare B. Hardham 1971-8-22 18397 A Lassen Diamond Mountain 2133 Comment
  CHSC61234  Persicaria amphibia P. V. Caldwell 1972-7-16 297 Lassen At foot of Black Mtn. on e shore of Eagle Lake. Comment
  SJSU10648  Persicaria amphibia H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CAS-BOT-BC419144  Persicaria maculosa Luella Bass 1980-8-29 s.n. Lassen Standish 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
  JEPS17742  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5419 Lassen along Smoke Creek Ranch rd 6.8 mi e jnct. with U.S. 395 1402 Comment
  JEPS95723  Phacelia adenophora Vernon H. Oswald and L. Ahart 1995-6-19 6884 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395 1371 Comment
  RSA17669  Phacelia adenophora Elmer I. Applegate 1934-5-4 8912 Lassen South end of Secret Valley Comment
  RSA38635  Phacelia adenophora P. A. Munz 1947-5-19 11881 Lassen Madeline 1677 Comment
  SD131633  Phacelia adenophora Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11701 Lassen S side of Schaffer Mt, W of Hwy 395 from Susanville to Alturas, 3.4 mi N of Wendel Rd 1387 Comment
  UC708799  Phacelia adenophora Vesta Holt 1946-6-20 4 Lassen Grasshopper Valley Comment
  CHSC71089  Phacelia bicolor var. bicolor Vernon H. Oswald; Lowell Ahart 1998-5-22 9132 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  CHSC91316  Phacelia bicolor var. bicolor Lowell Ahart; John Dittes 2005-6-1 11886 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
  UC1069270  Phacelia bicolor var. bicolor E. Sawyer 1935-6-27 233 Lassen Long Valley Sierraville Quadrangle Comment
  JEPS87427  Phacelia glandulifera Vernon H. Oswald and Lowell Ahart 1993-6-14 5541 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), n side of rd); Eagle Lake 1566 Comment
  CHSC93554  Phacelia hastata subsp. compacta Lowell Ahart; John Dittes 2005-6-2 11950 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction. 1498 Comment
  JEPS107814  Phacelia heterophylla subsp. virgata Lowell Ahart, John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction 1512 Comment
  POM195121  Phacelia heterophylla subsp. virgata D. D. Keck 1930-7-23 956 Lassen Fifteen miles west of Susanville. 1524 Comment
  CHSC80207  Phacelia humilis Jeanne Boze 1981-6-13 113 Lassen On northeast slope of Gallatin Peak. 2011 Comment
  RSA83225  Phacelia inundata Verne Grant, Alva Grant 1947-9-5 8374 Lassen Northwest shore of Eagle Lake Comment
  CHSC33362  Phacelia linearis Wayne O. Baum 1971-7-5 71 -17 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC5265  Phacelia linearis J. Wolf 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  CAS-BOT-BC134047  Phacelia mutabilis John Thomas Howell 1977-6-22 52400 Lassen north end of Eagle Lake 1584 Comment
  SD58172  Phacelia mutabilis Frances Payne 1929-7-12 85 Lassen NE Warner Mts., Ridge above Lost Lake 2438 Comment
  UC1483880  Phacelia ramosissima var. eremophila G. Schoolcraft 1979-6-26 94 Lassen on dunes located off Marr Road 1706 Comment
  CHSC59552  Phacelia ramosissima var. ramosissima M> Meyer 1980-7-8 514 Lassen Amongst rocks (lg.) and junipers on top of Grasshopper Ridge. 1724 Comment
  CHSC64879  Phacelia thermalis Vernon H. Oswald; Lowell Ahart 1995-6-19 6902 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395. 1444 Comment
  RSA337279  Phacelia thermalis Noel Holmgren, Patricia K. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U. S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  CAS-BOT-BC253549  Phleum alpinum G. Schoolcraft 1997-8-6 2668 Lassen Diamond Mtn. 2316 Comment
  JEPS94530  Phlox diffusa Vernon Oswald and Lowell Ahart 1997-6-24 8638 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC2042998  Phlox diffusa Barbara Ertter 1990-5-13 8964 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  RSA122928  Phlox diffusa subsp. diffusa L. R. Short 1936-4-28 S- 332 Lassen Lassen National Forest, Burgess Spring Experimental Range 1738 Comment
  UC773891  Phlox gracilis L. R. Short and Wm. Gansberg 1936-6-2 S- 363 Lassen Burgess Spring Experimental Range Lassen Forest 1859 Comment
  UC773907  Phlox gracilis unknown 1936-5-7 S- 343 Lassen Burgess Spring Experimental Range Lassen Forest 1737 Comment
  CHSC54189  Phlox hoodii subsp. canescens Vernon H. Oswald 1991-5-28 4626 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  HSC17176  Phlox longifolia M. L. Stuart 1965-5-2 53 Lassen 35 mi. NE of Susanville Comment
  RSA647573  Phlox longifolia Marion P. Harthill 1971-6-21 226 Lassen Ravendale Comment
  RSA469948  Phlox longifolia subsp. brevifolia Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC4263  Phlox speciosa K. R. Stern 1967-6-24 2412 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  JEPS69990  Phlox speciosa subsp. occidentalis Leland S. Smith 1918-5-12 922 Lassen Hayden Hill, s end of Modoc National Forest Modoc National Forest Comment
  RSA0029644  Phlox speciosa subsp. occidentalis Anthony Baniaga 2011-6-11 333 Lassen Lassen National Forest. At intersection of A1 and Sydnes Rd, north side of Eagle Lake. 1623 Comment
  NY963725  Phlox speciosa var. nitida H. D. D. Ripley 1944-5-29 5955 Lassen South of Janesville 1280 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
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  UC1136913  Phoenicaulis cheiranthoides L. R. Short 1936-4-28 S 335 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1737 Comment
  UC1100404  Phragmites australis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1489 Lassen 1 mi s Doyle; Long Creek Comment
  CHSC5247  Phyllodoce breweri 1946-7-12 Lassen Silver Lake. 1981 Comment
  SEINET3873297  Pinus flexilis Stanley L. Welsh, N. Duane Atwood 2001-6-13 28124 Lassen Ca 2 mi n of jct of Hwy 395 and Hwy 70, e of Beckwourth Pass.; 0 1575 Comment
  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
  UC429180  Piperia unalascensis Franklin P. Nutting Lassen Big Valley Mts., Lassen and Modoc Counties Big Valley Mts. Comment
  HSC104018  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 5.5 air mi. NE of Bieber, Ash Creek Wildlife Area, ~100 yds. SE of tall poles 1268 Comment
  SBBG125478  Plagiobothrys cusickii L. Ahart 2012-7-9 18284 Lassen ca. 100 yards SE of tall poles, Ash Crk State Wildlife Area, ca. 5.5 mi NE of Bieber, Big Valley 1267 Comment
  UC1137695  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Lassen National Forest 1743 Comment
  CHSC60881  Plagiobothrys hispidus Vernon H. Oswald; Lowell Ahart 1993-7-8 5655 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along a low, stony ridge between the railroad and the lake. 1709 Comment
  RSA666368  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy 44 ca 1 mi E of Shasta Co. line. 1646 Comment
  UC1483821  Plagiobothrys kingii G. Schoolcraft 1980-5-8 227 Lassen s. Herlong 1255 Comment
  CHSC71078  Plagiobothrys leptocladus Vernon H. Oswald; Lowell Ahart 1998-5-22 9099 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. On the bed of a vernal pool. 1316 Comment
  UC1483869  Plagiobothrys leptocladus G. Schoolcraft 1980-5-7 223 Lassen n shore Honey Lake Island; n shore Honey Lake Island 1219 Comment
  CHSC116091  Plagiobothrys mollis var. mollis Lowell Ahart; John Dittes 2015-7-13 20306 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA337274  Plagiobothrys scouleri Noel Holmgren, Patricia K. Holmgren 1980-7-3 9476 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  POM71640  Plagiobothrys scouleri var. hispidulus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC117209  Plagiobothrys tenellus Lowell Ahart; John Dittes 2016-6-7 21006 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC91317  Plagiobothrys tenellus Lowell Ahart; John Dittes 2005-6-1 11883 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
  JEPS90082  Plagiobothrys tenellus Dean Wm. Taylor with Robert A. Price 1988-6-4 9766 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. watershed, Fall R. Valley 1036 Comment
  UC101433  Plagiobothrys tenellus Marcus E. Jones, A. M. 1897-6-18 7141 Lassen Chat 1524 Comment
  JEPS124568 Image available Plagiobothrys tener Dixie Funnell 1965-7-13 144 Lassen 4.2 miles west of Dead Horse Summit. HW 89. Comment
  RSA0086588  Plantago Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  UC1951081  Plectritis congesta subsp. brachystemon Debra Valov 2009-4-24 2009010 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC4992  Plectritis macrocera L. E. Ray 1967-6-23 48 Lassen Collected ca. 200 yds, ne of ELBS. 1524 Comment
  CHSC64854  Plectritis macrocera Vernon H. Oswald 1995-6-26 6942 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  SEINET8658736  Plectritis macrocera C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UCD55158  Plectritis macrocera Ellen Dean 2006-5-15 3046 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  CHSC36850  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade, s of and paralleling Hwy 70, just se of Beckwourth Pass on Plumas-Lassen county line. 1584 Comment
  UC699671  Poa X fibrata Gus Hormay 1944-7-2 Lassen Squaw Valley Comment
  CAS-BOT-BC227203  Poa bulbosa Barbara T. Keller 1974-5-7 1265 Lassen Along highway 395 about 5 miles west of Hurlong, 1/4 mile south of Honey Lake Comment
  CAS-BOT-BC254945  Poa bulbosa Barbara Shervanick 1974-5-9 1298 Lassen Highway 89 through Lassen National Forest, about 0.25 mile N of Bridge Campground 1371 Comment
  JEPS114748  Poa bulbosa Lowell Ahart, John Dittes 2008-6-22 15035 Lassen About 220 yards west of the road levee, on the banks 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
  SEINET10868155  Poa bulbosa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17757 Lassen Approx. 12 mi S of Adin on Calif. Hwy 139, in basalt & clay; along edge of road on rolling knol, in Artemisia-Juniper assoc. 1372 Comment
  CAS-BOT-BC255033  Poa compressa John Thomas Howell 1974-7-10 50553 Lassen Elysian Valley 1325 Comment
  JEPS120878  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18780 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1024881  Poa cusickii subsp. cusickii Leo Whitney 1935-5-26 3141 Lassen 10 mi e Adin (Ash Creek) Comment
  SEINET10524396  Poa fendleriana Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 883 Lassen Collected 3 mi N of Milford, Calif. on Hwy 395 at Honey Lake campgrounds. Comment
  UCD91956  Poa pratensis R. Tofsrud 1947-7-24 213 Lassen 13 miles E of Madeline. Comment
  JEPS107465  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS114849  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2008-6-22 15020 Lassen On the road sides of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  UC1142958  Poa pratensis subsp. pratensis A. L. Hormay 1941-6-25 31 Lassen Westwood Junction; Lassen Nat'l Forest 1737 Comment
  UCR244104  Poa pratensis subsp. pratensis Jim Andre, G. L. Clifton 1993-6-9 19698 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
  POM100297  Poa secunda Marcus E. Jones 1897-6-23 11426 Lassen Amedee. 1220 Comment
  RSA647529  Poa secunda Marion P. Harthill 1972-6-17 821 Lassen Madeline. 1677 Comment
  UCD90454  Poa secunda L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Comment
  CAS-BOT-BC236256  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 miles W of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC247053  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  UCD32654  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2048 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  UCD92396  Poa secunda subsp. juncifolia A. H. Shunk 1923-7-28 s.n. Lassen Madeline. Comment
  UCD92397  Poa secunda subsp. juncifolia A. H. Shunk 1923-8-5 9 Lassen Bogard Ranger Station. Comment
  SEINET7294025 Image available Poa secunda subsp. juncifolia Leo Whitney 1935-1 3259 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  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
  UC1024818  Poa secunda subsp. secunda Leo Whitney 1935-6-19 3261 a Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024841  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3213 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1136988  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 219 Lassen Lassen Nat'l Forest 1722 Comment
  UCD91638  Poa secunda subsp. secunda A. L. Hormay 1941-6-26 37 Lassen Lassen National Forest. Pine Creek, Bogard Ranger Station. 1706 Comment
  UC1024806  Poa wheeleri Leo Whitney 1935-6-23 3287 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024807  Poa wheeleri Leo Whitney 1935-6-23 3286 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  CHSC110774  Pogogyne floribunda Dean Wm. Taylor 2012-7-18 21276 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  CHSC112409  Polemonium micranthum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18743 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
  SD61072  Polemonium occidentale Darley F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mountains, Modoc Natl. Forest 2012 Comment
  SEINET3562962 Image available Polyctenium fremontii Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, mud flats along the highway. 1347 Comment
  HSC63923  Polyctenium fremontii Teresa Prendusi, M. Meyer 1980-4-30 Lassen Along Hwy. 395, 3 mi. SE of Ravendale 1616 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
  JEPS94355  Polyctenium fremontii var. fremontii Vernon H. Oswald and Lowell Ahart 1997-5-7 8405 Lassen 1.7 ni e of Highway 395 (Mud Flat along Smoke Creek Ranch Road); Mud Flat, Smoke Creek Ranch Road 1356 Comment
  NY406791  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  CHSC117618  Polygala subspinosa L. P. Janeway and B. Castro 2015-6-5 11765 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  HSC24811  Polygala subspinosa D. H. Norris, F. J. Hermann 1972-5-17 22633 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  JEPS50529  Polygonum amphibium var. emersum W. L. Jepson 7997 a Lassen Grasshopper Valley 1615 Comment
  UC1536797  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch Honey Lake Valley Comment
  SBBG61490  Polygonum californicum E. Rockwell -Jun-1925 884 Lassen Eagle Lake 1554 Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC414491  Polygonum douglasii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50683 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  CHSC58849  Polygonum douglasii subsp. spergulariiforme Vernon H. Oswald; Lowell Ahart 1992-7-16 5125 Lassen Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1.0 mi E of Willow Spring Rd. (Forest Rd. 31N56), between Old Station and Susanville. 1745 Comment
  UC850047  Polygonum douglasii subsp. spergulariiforme M. S. Baker and F. Nutting 1894-1 Lassen Lassen Co. Comment
  HSC30028  Polygonum minimum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19271 Lassen Harvey Valley near Cone Springs Comment
  JEPS28705  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen draw 1 mi above Butte Lake (on Widow Lake Trail); Lassen Volcanic National Park 1905 Comment
  CHSC58850  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 a Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  HSC69611  Polygonum polygaloides subsp. confertiflorum Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  JEPS83273  Polygonum polygaloides subsp. confertiflorum J. D. Jokerst 1983-7-24 1883 Lassen Madeline Plains nw of Ravendale; Madeline Plains 1584 Comment
  RSA0045637  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area,, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  CAS-BOT-BC420159  Polygonum sawatchense subsp. sawatchense G. Schoolcraft 1988-6-15 1814 Lassen Ash Valley RNA/ACEC 16 miles east of Adin 1584 Comment
  RSA122848  Polygonum spergulariiforme L. R. Short 1936-9-30 s 501 Lassen Burgess Spring, Exp Range. 1768 Comment
  CHSC112799  Polypogon monspeliensis Lowell Ahart; John Dittes 2013-7-22 18874 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
  UC1132901  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen near Red Rock; Sierraville Quad., near Red Rock Comment
  UC50635  Polypogon monspeliensis J. Burtt Davy Jun 17 1897-Jun 24 1897 3351 Lassen Honey Lake Valley Comment
  CHSC13649  Porterella carnosula M. S. Taylor 1974-7-13 308 Lassen Abundant along edge of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi ne of Susanville. 1524 Comment
  CHSC71386  Porterella carnosula V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9259 Lassen Moll Reservoir in Ash Valley southeast of Adin. 1615 Comment
  UC526144  Porterella carnosula John Thomas Howell 1934-7-7 12466 Lassen near Feather Lake; near Feather Lake Comment
  SEINET10460835  Porterella carnosula Rimo Bacigalupi 1957-6-28 Bacigalupi 6023 Lassen In rich black wet soil in ditch along road, Highway 395 in Madeline Plains 3.1 miles south of Madeline 1615 Comment
  POM118979  Potamogeton natans Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC2046022  Potamogeton natans Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11167 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. Comment
  JEPS103226  Potamogeton nodosus G. Schoolcraft 1996-9-11 2563 Lassen Willow Creek below petroglyphs above dam 1341 Comment
  UC1099901  Potamogeton pusillus var. pusillus Verne Grant, Irving Schneider 1947-7-31 8202 Lassen Madeline Plain, ne quarter of George Williams section 19 Madeline Plain Comment
  OBI82315  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  RSA233761  Potamogeton richardsonii Robert F. Thorne, C. W. Tilforth 1969-9-5 39140 Lassen Said Valley Reservoir. Comment
  UC60851  Potamogeton striatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3357 Lassen marsh near Amedee; Honey Lake Valley Comment
  JEPS88679  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen along Ash Creek at the crossing of Ash Valley Road (Lassen County Road 527, Forest Road 39N08) Modoc Plateau, along Ash Creek, Ash Valley (Ash Valley) 1554 Comment
  UC1776675  Potentilla breweri G. Schoolcraft 1994-8-1 2390 Lassen About 2 miles W of Boot Lake 2456 Comment
  UC1137589  Potentilla gracilis var. fastigiata A. Simontacchi 1940-7-8 939 Lassen 3.9 mi se Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  CAS-BOT-BC540366  Potentilla gracilis var. fastigiata B. Bartholomew; B. Anderson 1988-6-25 4373 Lassen Warner Mountains 2080 Comment
  CAS-BOT-BC158475  Potentilla gracilis var. gracilis John Thomas Howell 1976-7-19 51948 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  SEINET10540584  Potentilla klamathensis Katherine L. Morris 1973-5-25 Morris 253 Lassen 27.7 miles nw of the junction of hwy 36 and 44 on hwy 44, at robber's spring, In an open meadow on one side of the hwy with yellow pine, white fir and open On the other side Comment
  CHSC4889  Potentilla millefolia L. G. Bennett 1967-7-17 166 Lassen 0.3 mi n of junction of Silver Lake Road and Hwy 44, on Hwy 44. 1975 Comment
  CHSC7046  Potentilla millefolia E. L. Williams 1969-4-28 18 Lassen Meadow on Highway 32, 58 mi toward Chester. 259 Comment
  CAS-BOT-BC158515  Potentilla millefolia Clarence R. Quick 1962-6-17 62 -17 Lassen North of DeLasmutt Ranch, along a dirt road to Black Mountain E.F. Hdqrts. 1615 Comment
  SJSU5819  Poteridium annuum J. W. Tilden 1960-6-27 1503 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  CAS-BOT-BC159777  Prunus andersonii R. F. Thorne; C. W. Tilforth 1969-9-6 39252 Lassen Beckwourth Pass, Plumas-Lassen Co. line county 1589 Comment
  HSC18803  Prunus andersonii Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  JEPS94135  Prunus andersonii Vernon H. Oswald and Lowell Ahart 1998-5-22 9119 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 1.1 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1447 Comment
  JEPS126465  Prunus emarginata Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-10 CA 350 -056 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  CAS-BOT-BC154614  Prunus subcordata John Thomas Howell 1974-7-8 50496 Lassen Susanville 1295 Comment
  JEPS44919  Prunus virginiana var. demissa W. L. Jepson 1918-8-3 7800 Lassen Honey Lake Valley 1219 Comment
  UC60834  Pseudoroegneria spicata subsp. spicata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Amedee; Honey Lake Valley, Amedee Comment
  UC718009  Pseudoroegneria spicata subsp. spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada 1341 Comment
  CAS-BOT-BC80093  Pseudotsuga menziesii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49409 Lassen Elysian Valley, west of Janesville 1325 Comment
  UCD135122  Pseudotsuga menziesii var. menziesii John Thomas Howell; Gordon H. True 1973-6-28 49409 Lassen Sierra Nevada, Elysian Valley, west of Janesville. 1310 Comment
  SEINET10801640  Psilocarphus brevissimus Katherine L. Morris, David B. Dunn; Douglas G. LeDoux 1973-5-25 Morris 249 Lassen 27.7 mi. NW of the junction of Hwy. 36 & 44 on Hwy. 44, at Robber's Spring, in an open meadow on one side of the highway with yellow pine, white fir and open on the other side. Comment
  CHSC30610  Psilocarphus brevissimus var. brevissimus L. Maslin 1975-7-1 5 Lassen Lower Dry Lake. 1828 Comment
  UC1924584  Psilocarphus brevissimus var. brevissimus Debra Valov 2006-5-28 2006014 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC66377  Psilocarphus oregonus Vernon H. Oswald; Lowell Ahart 1996-6-17 7794 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  JEPS102794  Psoralidium lanceolatum Vernon H. Oswald 2001-6-2 10040 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  CAS-BOT-BC460510  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile E of Westwood 1524 Comment
  UCD34874  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs rec. area. Comment
  UCD91890  Puccinellia lemmonii Freed W. Hoffman 1946-5-28 1820 Lassen Beiber. Comment
  RSA647519  Puccinellia nuttalliana Marion P. Harthill 1972-6-17 801 Lassen Standish. Comment
  CHSC109221  Purshia tridentata B. Castro; L. P. Janeway 2003-10-5 1460 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail betweenCone Lake and Triange Lade, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  CHSC13644  Purshia tridentata M. S. Taylor 1974-6-25 260 Lassen Surrounding meadow, ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC5019  Purshia tridentata L. G. Bennett 1967-7-1 81 Lassen 4 miles from Eagle Lake Biological Station on road to Gallatin Beach. 1676 Comment
  CAS-BOT-BC147816  Purshia tridentata var. tridentata Doris Kildale Gillespie 1930-5-12 9321 Lassen 2 miles north of Susanville on road to Alturas Comment
  UC1128540  Purshia tridentata var. tridentata C. W. Hanks 1934-9-26 91 Lassen w side Long Valley (near Plumas National Forest); Sierraville Quad. 1432 Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. Comment
  CAS-BOT-BC462757  Pyrola dentata John Thomas Howell; Gordon H. True 1973-7-31 50023 Lassen Sierra Nevada: on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  RSA0083372  Pyrola dentata Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  SEINET178134  Pyrola picta Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Susancille, Perkins R. 1829 Comment
  UC73543  Pyrola picta Milo S. Baker 1890-1 Lassen Milford Comment
  CAS-BOT-BC466053  Pyrola picta A. G. Brenneis 1928-7-3 11 Lassen Lassen Forest, Jesson Valley 1463 Comment
  UC412673  Pyrola picta Franklin P. Nutting Jul 1928 Lassen Mts. S of Eagle Lake Comment
  HSC81545  Pyrrocoma carthamoides var. cusickii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6049 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC35843  Pyrrocoma hirta var. lanulosa M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake 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
  CHSC52666  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains. 1614 Comment
  UC21043  Pyrrocoma racemosa var. paniculata J. Burtt Davy Jun 17 1897-Jun 24 1897 3380 Lassen Honey Lake Valley Comment
  UC1035885  Quercus kelloggii Annie M. Alexander and Louise Kellogg 1946-8-14 5158 Lassen Susanville, on hill back of town Comment
  UCD46729  Quercus kelloggii Verne Grant 1947-9-7 8400 Lassen Along Highway 395 west of Honey Lake, several miles south of Janesville, Lassen County, California. Comment
  UC1187154  Quercus vacciniifolia Jean Langenheim 1957-6-22 4371 Lassen nw Said Valley, ne part of Lassen County Said Valley 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
  UC1608998  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy 44 (between Poison Lake and Susanville) 1749 Comment
  SEINET516314  Ranunculus alismifolius var. lemmonii Vernon H. Oswald 1998-6-22 9230 Lassen Champs Flat Rd. (A-21) 1.8 mi N of Hwy 44, ca. 18 air mi N of Westwood. 1750 Comment
  HSC95453  Ranunculus aquatilis Gordon Leppig, Tony LaBanca 1997-6-29 539 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS107311  Ranunculus aquatilis var. aquatilis Lowell Ahart, John Dittes 2005-6-1 11904 Lassen Bottom of a depression, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CHSC6245  Ranunculus aquatilis var. capillaceus R. Gein 1946-6-17 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  NY652209  Ranunculus aquatilis var. capillaceus G. Schoolcraft 1996-9-11 2561 Lassen Willow Creek near Belfast 1432.6 Comment
  POM98935  Ranunculus aquatilis var. capillaceus Marcus E. Jones 1897-6-29 s.n. Lassen Susanville. 1311 Comment
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Jan 10 2016
  SEINET10536066  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1974-1 Taylor 282 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC110303  Ranunculus aquatilis var. diffusus L. P. Janeway; B. Castro 2012-7-2 10932 Lassen Modoc Plateau. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1600 Comment
  CHSC6246  Ranunculus canus W. Vinyard 1946-6-13 Lassen Pine Creek, Eagle Lake. 60 Comment
  CHSC6247  Ranunculus cymbalaria var. saximontanus M. West 1946-7-2 Lassen Pine Creek, Eagle Lake. 1584 Comment
  UC9428  Ranunculus cymbalaria var. saximontanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3332 Lassen Honey Lake Valley 1219 Comment
  CHSC77228  Ranunculus glaberrimus var. glaberrimus G. Schoolcraft 1996-3-30 2517 Lassen West of Susanhills subdivision, S. of Susanville. 1432 Comment
  UC1136881  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  UC118171  Ranunculus occidentalis T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC106217  Ranunculus occidentalis var. occidentalis Arthur C. Barrett 1915-6-3 15 Lassen Plumas National Forest. Laufman Ranger Station. 1463 Comment
Read comments
Jun 16 2012
  CHSC91186  Ranunculus occidentalis var. occidentalis Lowell Ahart; John Dittes 2005-6-1 11857 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
  JEPS118446  Ranunculus occidentalis var. occidentalis Lowell Ahart, John Dittes 2011-6-20 17479 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CDA3492  Ranunculus testiculatus T. C. Fuller 1969-5-22 18480 Lassen County fairgrounds, Susanville. 0 Comment
  OBI5233  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville Comment
  CHSC27740  Ranunculus uncinatus Jennifer Estep 1978-7-5 10 Lassen E side of Mahogany L. 2060 Comment
  CHSC4991  Ranunculus uncinatus L. E. Ray 1967-6-24 28 Lassen Collected ca. 3.5 mi. se ELBS, Upper Murrer Meadow. 1524 Comment
  UC1587100  Rhaponticum repens G. Schoolcraft 1991-7-31 2203 Lassen just n of Hall Spring; Shinn Mts. 1706 Comment
  JEPS124781 Image available Rhus aromatica C. Meek 1969-7-9 85 Lassen On south facing slope overlooking the Pitt Gorge off Hi #299; 2 mi West of Fall River Mills. Comment
  CAS-BOT-BC93390  Ribes cereum George W. Gillett 1957-7-26 916 Lassen Lassen Volcanic National Park. Butte Lake. 1844 Comment
  CAS-BOT-BC93393  Ribes cereum Carl B. Wolf 1929-9-1 3780 Lassen Mount Lassen National Park, between grassy and Snag Lakes. Comment
  CHSC67058  Ribes cereum Willis Ball 1969-6-19 8 Lassen Found approx. 100 yds. N.E. of E.L.B.S. 1615 Comment
  UC773884  Ribes cereum L. R. Short and Wm. Gansberg 1936-6-16 S- 439 Lassen Burgess Spring Experiment Range Lassen Forest 1880 Comment
  CHSC60742  Ribes cereum var. cereum Vernon H. Oswald; Lowell Ahart 1993-6-3 5487 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville. 1688 Comment
  JEPS87426 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1993-6-3 54887 Lassen just s of ford over Pine Creek (Champs Flat Rd (Lassen 105, Forest 32N28Y), 7.0 mi n of tis junction w Lassen 21 (32N02) to Eagle Lake, between Poison Lake and Susanville); Champs Flat Rd, Lassen 105, Forest 32N28Y 1688 Comment
  UC75460  Ribes inerme var. inerme Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 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
  CHSC12424  Ribes velutinum Anne Linda Brisk 1969-6-19 1 Lassen 1/4 mi NE of ELBS. 1554 Comment
  UC1136911  Ribes velutinum L. R. Short and Wm. Gansberg 1936-7-9 S- 481 Lassen MDM, Burgess Spr. Exp. Range Lassen Forest 1783 Comment
  CAS-BOT-BC363009  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen Lower NE slope of Shaffer Mtn. Comment
  CAS-BOT-BC363010  Rigiopappus leptocladus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49205 Lassen Elysian Valley northwest of Janesville 1325 Comment
  HSC82187  Rigiopappus leptocladus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6036 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC363013  Rigiopappus leptocladus Milo S. Baker 1894-7-1 s.n. Lassen S. side Dixey [Dixie] Mts. Comment
  UC1924227  Rorippa curvipes Debra Valov 2004-6-8 2004247 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC1126739  Rorippa curvisiliqua A. Simontacchi 1940-6-4 806 Lassen 14.8 mi w Harvey Mountain Lookout; Halls Flat Quad., Lassen National Forest Comment
  CHSC5023  Rorippa nasturtium-aquaticum L. G. Bennett 1967-6-24 45 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC13947  Rorippa sphaerocarpa M. S. Taylor 1974-7-8 265 Lassen On bank of levee, ca. 1 mi n of Honey Lake, ca. 1 mi s of Standish, Honey Lake Wildlife Refuge. Comment
  UCR17283  Rosa californica Frank C. Vasek 1975-7-11 750711- 22 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC12463  Rosa woodsii subsp. ultramontana Robert W. Severin 1969-6-26 44 Lassen Springs area 1 mile north of Galatin Beach, 3 mi s of E.L.B.S. 1645 Comment
  JEPS45635  Rosa woodsii var. ultramontana W. L. Jepson 1918-8-2 7782 Lassen 1 mi below Boni Ranch (lower bench of creek); Long Valley Creek 1371 Comment
  UC773922  Rosa woodsii var. ultramontana L. R. Short and Wm. Gansberg 1936-7-9 S- 484 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  UC1070543  Rumex H. S. Yates 1936-8-11 6057 Lassen near Red Rock; Sierraville Quad. 1341 Comment
  CHSC106088  Rumex acetosella Lowell Ahart; John Dittes 2010-7-31 17001 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CAS-BOT-BC421956  Rumex acetosella John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49507 Lassen Elysian Valley, west of Janesville 1325 Comment
  CDA2904  Rumex crispus Gordon Leppig 1998-7-12 962 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  UC6963  Rumex maritimus M. S. Baker and Frank Nutting 1894-7-25 Lassen Willow Creek Comment
  UC1037331  Rumex paucifolius Leo Whitney 1934-7-3 1954 Lassen 14 mi w Eagle Lake (Bogard Ranger Station); Lassen National Forest 1737 Comment
  UCR163274  Rumex salicifolius Jim Andre 1993-6-29 1409 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  UC6973  Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  JEPS114648  Rumex salicifolius var. triangulivalvis Lowell Ahart, John Dittes 2008-6-20 14930 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA0105589  Rumex triangulivalvis Lowell Ahart, John Dittes 2013-7-22 18867 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS29739  Rumex venosus Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8494 Lassen 10 mi s Milford (along U.S. Hwy 395) 1219 Comment
  SEINET4176403  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  CHSC27591  Sagittaria cuneata J. D. Prouty 1978-7-23 24 Lassen Upper Murrers Meadow, SE of Eagle L. 1545 Comment
  UCD138009  Sagittaria cuneata Calvin McMillan; Malcom A. Nobs 1949-6-17 799 Lassen Grass Lake, Highway 97. Comment
  CHSC61243  Sagittaria latifolia P. V. Caldwell 1972-6-23 246 Lassen Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow. Comment
  CAS-BOT-BC132713  Salix A. T. Whittemore 1979-4-21 79 -040 Lassen South shore of Eagle Lake Comment
  CAS-BOT-BC132739  Salix arctica E. B. Copeland 1931-8-16 s.n. Lassen Mount Lassen, on the south shore of Emerald Lake 2370 Comment
  POM362636  Salix bonplandiana Christopher Davidson 1975-6-6 2725 Lassen Ca 3.5 miles on road to Thompson Peak. Branching E of rd 204 ca 7.5 miles SW of Susanville. (Rd 204 follows Gold Run Cr.) 1677 Comment
  CAS-BOT-BC102812  Salix boothii Mrs. H. P. Bracelin 1934-6-14 820 Lassen Upper Silver Creek, near Silver Lake (Lost Lake), Warner Mountains 2316 Comment
  CHSC58514  Salix boothii Vernon H. Oswald 1992-7-3 5048 Lassen Trail from Juniper L. to Snag L., on the W edge of Cameron Meadow. 1950 Comment
  CAS-BOT-BC103456  Salix eastwoodiae G. Schoolcraft 1997-8-6 2666 Lassen Diamond Mtn. 2316 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
  CHSC91187  Salix exigua Lowell Ahart; John Dittes 2005-6-1 11905 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  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
  UC481924  Salix exigua var. hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen at edge of Pit River McArthur 960 Comment
  NY430479  Salix laevigata G. Schoolcraft 1994-8-2 2413 Lassen About 1.5 miles southwest of Boot Lake 2011.7 Comment
  CAS-BOT-BC128171  Salix lasiandra var. lasiandra John Thomas Howell; Gordon H. True 1973-7-31 50042 Lassen On road from Janesville to Thompson Peak, Diamond Range - Sierra Nevada 1783 Comment
  CAS-BOT-BC128174  Salix lasiandra var. lasiandra Mrs. E. C. Sutliffe 1927-6-1 s.n. Lassen Drakesbad - Lassen Volcanic park Comment
  CHSC13668  Salix lemmonii E. L. Smith 1971-4-28 946 A Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  POM209558  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 686 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  POM362823  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 684 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  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
  POM107066  Salix melanopsis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  HSC95283  Salix petrophila Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC126176  Salix scouleriana John Thomas Howell 1969-8-7 45885 Lassen Between Butte Lake and Cinder Cone, Lassen Park Comment
  POM106677  Salix scouleriana Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  JEPS59867  Salsola tragus W. L. Jepson 1918-8-2 7791 Lassen Long Valley 1219 Comment
  UC1136482  Salsola tragus E. Sawyer 1935-6-27 218 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CHSC64790  Salvia dorrii var. dorrii Vernon H. Oswald 1995-5-24 6757 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1280 Comment
  CHSC71239  Salvia dorrii var. dorrii Vernon H. Oswald; Lowell Ahart 1998-6-4 9145 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  UCLA27615  Salvia dorrii var. dorrii Mrs. H. C. Cantelow 1941-5-22 Lassen 2.5 mi n Secret Valley (C.C.C. Camp on U.S. Hwy 395 to Alturas from Quincy) Comment
  CAS-BOT-BC238592  Sambucus nigra subsp. caerulea John Thomas Howell 1974-7-10 50548 Lassen Elysian Valley 1325 Comment
  UCD137207  Sambucus nigra subsp. caerulea P. B. Schultz 1967-7-12 78 Lassen 14 miles southeast of Adin on State Highway 139. 1524 Comment
  JEPS88210  Sanguisorba annua Vernon H. Oswald and Lowell Ahart 1996-6-17 7787 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at the Hwy 36 bridge spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  POM83011  Sanicula graveolens Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  JEPS947  Sanicula tuberosa G. S. Crew, C. S. Robinson 6/1/1927-7/1/1927 12 Lassen near Westwood Junction (Lassen National Forest, Norval Flat, sw Lassen County); Lassen National Forest, Norval Flat 2051 Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC110336  Sarcobatus vermiculatus Louella Bass 1982-6-20 s.n. Lassen West of Karlo. Comment
  CDA23525  Sarcobatus vermiculatus M. R. Pryor 1953-9-22 Lassen 0.5 mile west of Jack Crow s property, Stacey. 0 Comment
  CDA23526  Sarcobatus vermiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 A Lassen Wendel. 0 Comment
  CHSC30628  Sarcobatus vermiculatus T. M. Lane 1975-7-7 35 Lassen SE of Horse Lake Rd, on se shore of Horse Lake; 19 km nne of Susanville. 1508 Comment
  HSC4526  Sarcobatus vermiculatus Fred J. Kindel 1955-7-14 Lassen Wendel, Hot Springs Comment
  JEPS59876  Sarcobatus vermiculatus W. L. Jepson 1918-8-4 7805 Lassen Horse Lake 1554 Comment
  SJSU14475  Sarcobatus vermiculatus W. D. Pitts 1990-5-29 298 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  JEPS1765  Saxifraga nidifica var. nidifica Milo S. Baker 1952-5-23 12422 Lassen e of Chester (Hwy 36) Comment
  CDA25442  Saxifraga oregana Gordon Leppig 1998-7-12 939 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  CAS-BOT-BC283087  Schedonorus arundinaceus Margaret Williams; Louella Bass 1972-10-22 EV 3 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC383111  Schoenoplectus acutus var. occidentalis Andrew Townesmith; Karen M. Meyer 2007-7-22 842 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  CHSC91792  Schoenoplectus acutus var. occidentalis L. P. Janeway 2005-8-27 8525 Lassen High Cascade Range. Northwest shore of Eagle Lake; east end of Sandy Beach, west side of Rocky Point. 1550 Comment
  RSA252375  Schoenoplectus acutus var. occidentalis Robert F. Thorne, C. W. Tilforth 1969-9-6 39256 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  CHSC66415  Scirpus microcarpus Vernon H. Oswald; Lowell Ahart 1996-6-17 7819 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. In a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  SEINET3815589 Image available Scirpus microcarpus Marcus E. Jones 1897-1 Lassen Susanville 1341 Comment
  CAS-BOT-BC240002  Scribneria bolanderi Alice Eastwood; John Thomas Howell 1940-6-11 7974 Lassen Big Valley Mts. Comment
  JEPS88199  Scribneria bolanderi Vernon H. Oswald and Lowell Ahart 1996-6-17 7804 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side of trail between Devils Corral Trailhead and the 6.0 mi. post); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UCD92528  Scribneria bolanderi Malcolm A. Nobs; S. Galen Smith, Herbert L. Mason 1949-5-29 759 Lassen on Great Northern Railroad, Highway 299, Nubeiber. Comment
  JEPS29096  Scrophularia lanceolata Lauramay T. Dempster 1961-6-17 1674 Lassen ca 4 mi n of Karlo Rd junction with Hwy 395 1432 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
  NY415692  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
  POM252832  Scutellaria nana A. A. Heller 1938-6-23 15186 Lassen 1 mile south of Westwood. 1524 Comment
  SBBG125002  Scutellaria nana C. B. Hardham -Jun-2000 Lassen Gold Run Crk, S of Susanville Comment
  CAS-BOT-BC240082  Secale cereale Margaret Williams; Steven Williams 1974-7-26 74 -L-38 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  UC11232  Sedum stenopetalum M. S. Baker and Frank Nutting 1894-7-7 Lassen Harvey's Ranch Comment
  CAS-BOT-BC363324  Senecio aronicoides Alice Eastwood 1912-8-22 1819 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  UC1136810  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F 253 Lassen Lassen National Forest 1783 Comment
  RSA0012768  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen West of Fredonyer Pass on Highway 36. 1677 Comment
  UC1609237  Senecio hydrophiloides Vernon H. Oswald and Lowell Ahart 1993-6-28 5600 Lassen Rd 35N04 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley 1725 Comment
  HSC95295  Senecio hydrophilus Gordon Leppig, J. Cromwell 1997-7-27 615 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UCD135547  Senecio integerrimus Grady L. Webster 1989-5-13 7723 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  UCD135546  Senecio integerrimus Grady L. Webster 1989-5-13 7702 Lassen Butterfly Valley area. Aound 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  CAS-BOT-BC363810  Senecio integerrimus var. exaltatus John Thomas Howell 1934-6-14 12158 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC364253  Senecio triangularis B. C. Cain 1925-8-24 108 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  SD8445  Sibbaldia procumbens Mrs. R. M. Austin 1882-8-7 Lassen King's Valley Comment
  UC1587031  Sidalcea glaucescens G. Schoolcraft 1991-7-30 2198 Lassen East slope of Widow Mountain 1859 Comment
  RSA25322  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA647545  Sidalcea oregana subsp. oregana Marion P. Harthill 1971-6-21 204 Lassen Susanville. Comment
  RSA31660  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 2 miles E of Westwood. 1524 Comment
  CHSC57275  Silene bernardina Mary Meyer 1980-7-22 Lassen Downhill 100 yds west from sharp bend in road on top going to Lookout Tower. 2316 Comment
  UC585109  Silene bernardina E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1765 Lassen rocky ne slope of ridge near summit e Red Rock; summit e of Red Rock 1828 Comment
  SEINET8879824  Silene menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc NF, along Blue Lake Road N of Blue Lake, above Parsnip Creek, ca 15 miles ESE of Likely. 1860 Comment
  CAS-BOT-BC389552  Silene nuda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49488 Lassen Elysian Valley. West of Janesville 1325 Comment
  CHSC36188  Silene nuda M. S. Taylor 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass. 1432 Comment
  JEPS50953  Silene nuda W. L. Jepson 1918-8-3 7802 Lassen near Buntingville (at Raker Ranch, Honey Lake Valley); Honey Lake Valley, at Raker Ranch 1219 Comment
  JEPS87996  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ca 1.5 mi e Diamond Peak (ca 10 airmi due s of Susanville, ridge of Diamond Mts.); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  UCD18969  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  UCD99020  Silene nuda E. Sawyer 1935-6-27 223 Lassen Long Valley. 1310 Comment
  JEPS50951  Silene occidentalis subsp. occidentalis Brown and Wieslander 1922-7-23 32 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  HSC4227  Silene verecunda Fred J. Kindel 1955-7-9 Lassen Susan River Comment
  CAS-BOT-BC74890  Sinapis alba John Thomas Howell 1974-7-8 50502 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC7183  Sisyrinchium douglasii Lynn R. Thomas 1969-4-18 103 Lassen On bluff directly behind Lassen Memorial Hospital (area of old city dump), Susanville. (USGS 'Susanville') 1341 Comment
  CHSC7681  Sisyrinchium douglasii Beverley J. Wise 1969-4-21 137 Lassen 2.6 mi. south of Susanville on the old dump road. 1341 Comment
  UC3888  Smilacina stellata J. Burtt Davy Jun 17 1897-Jun 24 1897 3387 Lassen Adobe Meadows Honey Lake Valley, Byer's Ranch Comment
  SEINET7707308  Sorbus californica G. Schoolcraft 1997-1 2672 Lassen Diamond Mountain, N slope 2317 Comment
  CAS-BOT-BC236547  Sorghum halepense Louella Bass 1980-7-29 EV 5 -80 Lassen Elysian Valley, Hwy. 395 at County Road 207, near Jamesville, Sierra Nevada Comment
  CHSC27654  Sparganium emersum subsp. emersum Jerry Snodgrass 1978-7-11 50 b Lassen Papoose Creek, SE corner of Eagle L. Meadow; in pool. 1584 Comment
  CHSC66285  Sparganium emersum subsp. emersum Vernon H. Oswald; Lowell Ahart 1996-6-24 7871 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS96089  Sparganium emersum subsp. emersum Vernon H. Oswald and Lowell Ahart 1996-6-24 7871 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow 1633 Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CAS-BOT-BC438841  Sparganium natans Andrew Townesmith; Karen M. Meyer 2007-7-22 844 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. 1981 Comment
  UCD150406  Sphaeromeria potentilloides William Anderson 1963-6-9 s.n. Lassen Vinton. 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-BC149625  Spiraea douglasii Parkison 1916-7-23 41 Lassen Harvey R.S. Pasture, Lassen National Forest 1676 Comment
  HSC95180  Spiranthes porrifolia Gordon Leppig, J. Cromwell 1997-7-27 603 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS64515  Spiranthes romanzoffiana Brown and Wieslander 1922-7-30 49 Lassen Martin Sprs. Eagle Lake Comment
  CHSC5276  Stachys ajugoides var. rigida L. Harman 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  CHSC5277  Stachys ajugoides var. rigida P. Balch 1955-7-17 Lassen Papoose Creek, near Gallatin's. Eagle Lake. 1615 Comment
  UC773921  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spring Experiment Range Lassen Forest 1795 Comment
  SJSU11331  Stachys rigida J. W. Tilden 1960-6-27 1522 Lassen by Moonlight Rd 5 mi E of Westwood 1524 Comment
  HSC26818  Stanleya elata D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19286 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC391078  Stellaria longipes subsp. longipes Louella Bass 1973-5-29 87 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC391143  Stellaria longipes subsp. longipes John Thomas Howell 1934-6-14 12149 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC4785  Stellaria longipes var. longipes R. Carter 1967-6-29 574 Lassen In Murrer's Meadow, 100 yds. SE of dam. Comment
  POM33607  Stephanomeria spinosa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC29899  Stephanomeria tenuifolia Robin L. Ondricek 1978-8-2 110 Lassen On top of ridge se of Eagle Lake Field Station. 1609 Comment
  HSC26013  Stipa hymenoides D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19297 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  SEINET8512762  Stipa thurberiana A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1093 Lassen Costantia Allotment. Highway 395 North into California, then right on paved entrance road before Red Rock Road and red rock formation, follow road right (South), then left (East) at top of first hill, go in roughly 0.5 miles, population is along roadside 1461 Comment
  CAS-BOT-BC519057  Streptopus amplexifolius Alice Eastwood 1912-8-22 1765 Lassen Trail to Sulphur Mine from Morgans, Lassen Butte Region 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
  CHSC48447  Swertia albicaulis var. albicaulis Vernon Oswald 1986-5-28 2060 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  CHSC99142  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
  RSA0037006  Swertia albicaulis var. albicaulis Lowell A. Ahart, John Dittes 2008-6-19 14881 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1123452  Swertia albicaulis var. albicaulis A. Simontacchi 1940-6-6 823 Lassen 3.6 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  CHSC27669  Swertia albicaulis var. nitida Robert A. Schlising 1978-7-9 3312 Lassen S of Eagle Lake; forested area between Papoose Meadows and Eagle Lake Road. Comment
  CHSC83620  Symphoricarpos rotundifolius var. rotundifolius L. P. Janeway 2001-6-28 7236 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  HSC93475  Symphoricarpos rotundifolius var. rotundifolius Gordon Leppig, Tony LaBanca 1998-7-13 964 Lassen Modoc National Forest, Blue Lake Ranch. 1799 Comment
  JEPS88239  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7801 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, edge of trail ca. 0.2 mi. e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  JEPS93963  Symphyotrichum campestre Vernon H. Oswald 1998-9-14 9623 Lassen Windy Hollow on the w side of Highway 44 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44 1737 Comment
  CAS-BOT-BC98929  Symphyotrichum foliaceum var. parryi G. Schoolcraft 1994-7-6 2359 Lassen About 1 mile west of Boot Lake 204 Comment
  OBI75865  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen Natl Forest. Caribou Wilderness; N of Long Lake. Red Cinder quad. T30 N R7E sec 9NE of SW 2099 Comment
  SFV7757  Symphyotrichum spathulatum T. Gordon, K. Kimbrough 1975-8-15 1211 Lassen 16 miles south of Adin. 1402 Comment
  JEPS122175  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-8-20 19720 Lassen 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. Comment
  CHSC59074  Symphyotrichum spathulatum var. yosemitanum Vernon H. Oswald; Lowell Ahart 1992-8-25 5179 Lassen Lassen Volcanic National Park. Opening in forest on the W side of the trail ca. 0.1 mi NW of Cameron Meadow, between Juniper and Snag Lakes. 1950 Comment
  RSA324710  Taeniatherum caput-medusae A. Tiehm, James Young, Raymond Evans 1984-6-7 8597 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  CHSC5066  Taraxacum officinale D. L. Stites 1967-6-24 30 Lassen Collected ca. 3 mi. se ELBS, Upper Murrer Meadow. 1524 Comment
  UC1136807  Taraxacum officinale L. R. Short and W. McNulty 1936-6-17 Lassen Burgess Spr. Exp. Range Lassen Forest 1795 Comment
  CHSC59758  Taraxia tanacetifolia Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In meadows by creek in Balls Canyon. 1219 Comment
  CHSC99278  Taraxia tanacetifolia Lowell Ahart; John Dittes 2008-6-22 15037 Lassen About 220 yards west of the road levee, on the banks 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
  LA204037  Tetradymia canescens Lewis S. Rose; 1934-7-23 34409 Lassen Reno Junction 1371 Comment
  SEINET7106806  Tetradymia canescens Richard R. Halse 2010-8-26 8090 Lassen Along State Hwy. 70 at Beckwourth Pass ca 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles E of Sierra Valley.; 0 1584 Comment
  UC501445  Tetradymia canescens Frank W. Peirson 1932-7-20 10354 Lassen 20 mi se Susanville Comment
  UC830638  Tetradymia glabrata A. A. Heller 1938-6-23 15205 Lassen near Mapes (on U.S. Hwy 395) 1310 Comment
  RSA94936  Tetradymia glabrata F. W. Peirson 1926-6-24 6854 Lassen On Madeline Plain Comment
  CAS-BOT-BC392289  Thalictrum fendleri Alice Eastwood 1912-8-22 1769 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  CAS-BOT-BC399734  Thalictrum occidentale L. S. Smith 1918-8-11 1030 Lassen Modoc National Forest. Camp One above Lost Lake 2484 Comment
  UC10930  Thelypodium crispum M. S. Baker and F. Nutting 1894-7-6 Lassen Dixey Valley Comment
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Oct 10 2006
  RSA294538  Thelypodium flexuosum A. Tiehm 1980-5-29 5745 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  UC1479578  Thelypodium flexuosum Gary Schoolcraft 1980-5-16 233 Lassen e. side Honey Lake (n.e. of Amedee Hot Springs) 1219 Comment
  UCD55274  Thelypodium flexuosum Ellen Dean 2006-5-15 3084 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  CAS-BOT-BC88111  Thelypodium integrifolium subsp. complanatum T. C. Fuller 1980-9-4 20336 Lassen 0.3 km. south of the Smoke Creek Ranch Road, 2 km. west of the state line, Rush Creek Drainage. Comment
  CDA25198  Thelypodium integrifolium subsp. complanatum T. C. Fuller 1980-8-6 20321 Lassen 0.3 km south of Smoke Creek Ranch Road, 2 km west of the state line, Rush Creek drainage. 0 Comment
  CAS-BOT-BC197368  Thinopyrum intermedium subsp. barbulatum John Thomas Howell 1974-7-10 50520 Lassen At the cemetery along road, Janesville 1295 Comment