Search Results — 2000 specimen records retrieved (1652 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA19020  Abies concolor Mark Lubinski 2000-10-12 PDR 1103214 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36, ~5 mi W of Susanville. 0 Comment
  UCD133116  Abies concolor Beecher Crampton 1960-6-18 5711 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  CHSC13794  Abies magnifica Cathy Crittenden 1970-7-9 39 Lassen 2 1/2 miles east of Antelope Mtn. lookout on road to Eagle Lake Resort. 1981 Comment
  CAS-BOT-BC330610  Acer glabrum var. glabrum Clare B. Hardham 1969-8-28 17438 Lassen Sierra Nevada. West of Janesville. Comment
  RSA603232  Acer glabrum var. torreyi C. Epling, Wm. Robinson 1935-7-19 s.n. Lassen Sulphur Spring, Lassen Park Comment
Read comments
May 1 2013
  CAS-BOT-BC260401  Achnatherum hymenoides John Thomas Howell 1974-7-8 50464 Lassen Susanville 1295 Comment
  CAS-BOT-BC260404  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near E side of saddle ca 0.8 mile NE of Meadowview Peak 1981 Comment
  CAS-BOT-BC210662  Achnatherum lemmonii John Thomas Howell 1976-7-20 52004 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD50617  Achnatherum lemmonii Beecher Crampton 1960-6-18 5717 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC110708  Achnatherum nevadense G. Schoolcraft 1997-6-26 2600 Lassen Large knob between Milford and Janesville. 1676 Comment
  UCD50843  Achnatherum nevadense B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CHSC106321  Achnatherum occidentale subsp. californicum Lowell Ahart; John Dittes 2010-7-31 17027 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-BC218609  Achnatherum occidentale subsp. pubescens John Thomas Howell 1976-7-20 52003 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek, Sierra Nevada 1432 Comment
  UC1024939  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-26 3334 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC773977  Achnatherum occidentale subsp. pubescens L. R. Short and J. Warren 1936-6-29 S- 462 Lassen Burgess Spring Experimental Range Lassen National Forest 1820 Comment
  UCD18961  Achnatherum occidentale subsp. pubescens Raymond D. Ratliff 1965-7-12 15 Lassen Lassen National Forest, Harvey Valley Allotment and Champ's Flat Allotment (HV 81-76 and CF 81-9). 1737 Comment
  UCD51205  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2069 Lassen Along US Hwy. 395, 1 mile east of Johnstonville. Comment
  CAS-BOT-BC218007  Achnatherum thurberianum J. A. Jenkins 1937-7-15 2355 Lassen SW slope Big Valley Mountain along highway from McArthur to Bieber 1127 Comment
  CHSC29880  Achnatherum thurberianum Robin L. Ondricek 1978-6-8 47 Lassen Ridge E of Lower Dry Lake. 1798 Comment
  RSA700231  Achnatherum thurberianum L. P. Janeway 2001-6-20 7205 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UCD51422  Achnatherum thurberianum L. Whitney 1935-6-19 3267 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UC1037345  Achnatherum webberi Leo Whitney 1935-7-3 3587 Lassen Ashurst Mt. Comment
  CHSC117295  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2016-7-13 21119 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
  CHSC29897  Acmispon americanus var. americanus Robin L. Ondricek 1978-7-7 91 Lassen Below the dam in Murrers Upper Mdw. 1548 Comment
  JEPS60356  Aconitum columbianum Brown and Wieslander 1922-7-30 20 Lassen Eagle Lake, Martin Springs Comment
  UC465624  Aconitum columbianum Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC412871  Aconogonon davisiae Brighton C. Cain 1925-8-25 127 Lassen Horse trail from summit of Mt. Lassen to Drakesbad, Mt. Lassen Volcanic National Park Comment
  CAS-BOT-BC412874  Aconogonon davisiae G. Schoolcraft 1997-8-6 2664 Lassen N of Dimond [Diamond] Rock Peak 2316 Comment
  CAS-BOT-BC418769  Aconogonon phytolaccifolium Alice Eastwood 1912-8-22 1878 Lassen Morgans Springs [Morgans Hot Springs, el. 5000 ft.], Lassen Butte Region 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
  CAS-BOT-BC110715  Aegilops cylindrica John Thomas Howell 1974-7-8 50505 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC12963  Agastache parvifolia L. B. Barlow 1967-6-30 51 Lassen West central shore of Eagle Lake, 1/2 mi. south of Pelican Point. 1554 Comment
  CHSC21954  Agastache parvifolia Robert A. Schlising 1974-7-19 3152 Lassen SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station along dirt road. Comment
  CHSC23525  Agastache urticifolia Wayne O. Baum 1971-7-14 71 -68 Lassen N slope of Gallatin Peak. 2011 Comment
  UC1483811  Agastache urticifolia G. Schoolcraft 1979-7-5 122 Lassen n face Observatioin Peak; n face of Observation Peak 1828 Comment
  CAS-BOT-BC30232  Ageratina occidentalis William Bridge Cooke 1938-8-24 11580 Lassen In small valley just west of Bolam Creek. Also on an outcropping west of Horse Camp in the Shasta Fir Forest 2133 Comment
  CAS-BOT-BC30234  Ageratina occidentalis Hans Leschke 1961-8-18 1832 Lassen Summit area of Diamond Peak 2423 Comment
  CHSC7650  Agoseris glauca var. laciniata Beverley J. Wise 1969-4-29 9 Lassen 3.5 mi. from Susanville on the Round Valley road (turns off Hwy 139 approx. 1.4 mi. from Susanville). 1341 Comment
  CHSC66418  Agropyron desertorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7800 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Ca.0.1 mi E of Devils Corral Trialhead. 1420 Comment
  UC60210  Agrostis J. Burtt Davy Jun 17 1897-Jun 24 1897 3303 Lassen Honey Lake Valley Comment
  CAS-BOT-BC127237  Agrostis exarata John Thomas Howell; Gordon H. True 1973-7-31 50021 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1737 Comment
  CAS-BOT-BC127240  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50226 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  RSA0105582  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA129621  Agrostis exarata H. S. Yates 1936-8-11 6067 Lassen Baxter Creek 1280 Comment
  UC1037106  Agrostis exarata Leo Whitney 1934-9-1 3000 Lassen Fredonyer Campground Lassen National Forest 1706 Comment
  UC1100103  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen 4 mi n Madeline Comment
  UC773966  Agrostis exarata L. R. Short 1936-8-21 S- 499 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1798 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-BC139677  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49485 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC139295  Agrostis idahoensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49523 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1024658  Agrostis oregonensis Leo Whitney 1933-8-7 2194 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1024919  Agrostis pallens Leo Whitney 1935-6-27 3319 Lassen meadow 2 mi n Camp 10; Lassen National Forest, Fruit Growers Supply Company Comment
  UCD53246  Agrostis pallens L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  CHSC29905  Agrostis scabra Robin L. Ondricek 1978-8-4 114 Lassen Near edge of Eagle Lake along grassy shoreline. 1554 Comment
  CAS-BOT-BC138624  Agrostis stolonifera Margaret Williams; Steven Williams 1974-7-26 74 -L-40 Lassen Sierra Nevada. Near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  CHSC29881  Agrostis stolonifera Robin L. Ondricek 1978-8-2 112 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  UCD53581  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Lassen National Forest. Bogard Ranger Station. Comment
  CAS-BOT-BC138570  Agrostis variabilis John Thomas Howell 1959-9-23 34890 Lassen North end of Juniper Lake, Lassen Park. 2057 Comment
  UC978580  Alisma gramineum Verne Grant and Irving Schneider 1947-8-1 8221 Lassen irrigation ditch running sw into State Fish and Game nesting area on west side of Section 19; Madeline Plain Comment
  UC55670  Alisma plantago-aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3337 Lassen Susan River Honey Lake Valley 1219 Comment
  POM119135  Alisma triviale Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  HSC81650  Allium acuminatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6026 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
  UC1483842  Allium acuminatum G. Schoolcraft 1980-6-5 250 Lassen ne side of Snowstorm Mountain Snowstorm Mountain 1584 Comment
  UC1567412  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen along Skedaddle Ranch Rd. near stateline 1584 Comment
  CAS-BOT-BC461096  Allium anceps B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6553 Lassen Just S of Ravendale 1580 Comment
  SEINET222604 Image available Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Hwy 395, 3 mi. S of Ravendale. Comment
  CHSC27661  Allium campanulatum Robert A. Schlising 1978-7-1 3302 Lassen S of Eagle Lake at E side of Mahogany Lake. 2060 Comment
  UC1133790  Allium campanulatum A. Simontacchi 1940-7-1 935 Lassen 2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET8122319  Allium lemmonii G. Schoolcraft 1993-1 2287 Lassen Clark Valley Road, ca 9.5 miles E of Madaline. 1829 Comment
  HSC47288  Allium lemmonii Dale McNeal 1978-5-30 2129 Lassen Beside Hwy. 395, 1.9 mi. S of Ravendale Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 Comment
  UCD55299  Allium parvum Ellen Dean; Gary Schoolcraft 2006-5-16 3120 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  SEINET12058087  Allium parvum Unknown 1992-3-31 618 A Lassen Ash Valley, ca 15 road mi SE of Adin via Ash Valley Road Comment
  SEINET8191388  Allium parvum L. Miller 1934-3-29 s.n. Lassen E of Susanville. Comment
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  CAS-BOT-BC476625  Allium tolmiei B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6563 Lassen U.S. Hwy. 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield. 1330 Comment
  UC1299751  Allium tolmiei var. tolmiei Freed W. Hoffman 1946-6-9 731 Lassen on Highway 395 about 10 mi s Alturas; Dry Creek Comment
  CAS-BOT-BC171316  Alnus incana subsp. tenuifolia John Thomas Howell; Gordon H. True 1973-8-1 50223 Lassen Headwaters of Boxter Creek, Canadian Zone forest, E slope of Diamond Range s of Susanville. Sierra Nevada Comment
  CHSC26169  Alnus incana subsp. tenuifolia Detzer; Sacks 1977-7-24 2 Lassen Ca. 3 mi se Milford, .5 mi se Laufman Ranger Stn., on unimproved USFS road. 1481 Comment
  CHSC91199  Alnus incana subsp. tenuifolia Lowell Ahart; John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  RSA129209  Alopecurus aequalis Alice Yates 1936-8-11 6068 Lassen Baxter Creek; Susanville 1280 Comment
  UC1594602  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  UC60734  Alopecurus aequalis M. S. Baker and F. Nutting 1894-7-1 Lassen n. side Dixey Mts. Comment
  UC790958  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 mi. w. Chester (Rte. 36) Comment
  UCD55821  Alopecurus aequalis Mrs. Austin 1894-6-1 s.n. Lassen Willow Creek Valley. Comment
  JEPS127218  Alopecurus carolinianus Lowell Ahart, John Dittes 2016-7-15 21214 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC108017  Alopecurus geniculatus Lowell Ahart; John Dittes 2011-6-20 17504 Lassen In the small stream, about 80 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  OBI77305  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  RSA0029642  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen National Forest. Poison Lake. 1700 Comment
  UCD55918  Alopecurus saccatus P. B. Kennedy 1927-6-13 s.n. Lassen Pit River. Comment
  CDA3617  Alyssum minus var. micranthum Vernon H. Oswald & Lowell Ahart 1998-6-4 9144 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. 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
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  JEPS95710  Ambrosia acanthicarpa Vernon H. Oswald and L. Ahart 1995-8-14 7191 Lassen T33N R14E SW1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville 1645 Comment
  RSA252462  Ambrosia acanthicarpa R. F. Thorne, C. W. Tilforth 1969-9-6 39266 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CHSC29918  Amelanchier alnifolia var. pumila Robin L. Ondricek 1978-5-25 26 Lassen .5 mi S of tunnel crossing on road to Eagle Lake Field Station. 1554 Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 Comment
  SBBG14885  Amelanchier utahensis A. I. Richardson 1961-5-30 8 Lassen S of Eagle Lake 1402 Comment
  UC12072  Amelanchier utahensis Mrs. R. M. Austin and Bruce Jun 1898 2338 Lassen Comment
  CHSC99501  Amsinckia menziesii Lowell Ahart; John Dittes 2008-6-20 14909 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
  SEINET12492784  Amsinckia tessellata F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  UC1167764  Amsinckia tessellata var. tessellata Peter H. Raven with Otto T. Solbrig 1958-6-17 13276 Lassen 19.0 mi s Ravendale (along US Hwy 395) Comment
  UC61145  Amsinckia tessellata var. tessellata Jos. Burtt Davy Lassen Honey Lake Valley Awadee Comment
  UC424647  Anemone occidentalis R. H. Finch Aug. 1930 Lassen <Mineral ?> Comment
  SEINET6735001 Image available Anisocoma acaulis F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CAS-BOT-BC63874  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  UC1125575  Antennaria argentea A. Simontacchi 1940-6-23 886 Lassen 3.2 mi sw Schoonamaker Lake; Halls Flat Quad. 1920 Comment
  CHSC71069  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1998-5-22 9088 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  UC585078  Antennaria dimorpha E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1755 Lassen nw-facing slope of ridge e of Redrock 1600 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
  CAS-BOT-BC69141  Antennaria geyeri Clare B. Hardham 1969-8-28 17453 D Lassen West of Janesville Comment
  RSA416687  Antennaria geyeri J. T. Howell 1934-7-9 12520 Lassen Pine Creek Flat Comment
  CAS-BOT-BC58692  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen East of Westwood Comment
  CAS-BOT-BC58694  Antennaria luzuloides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16360 Lassen Near NE end of Eagle Lake Comment
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  RSA702449  Antennaria luzuloides L. P. Janeway 2004-6-26 8167 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UC1523723  Antennaria rosea Gary Schoolcraft 1982-8-10 865 Lassen se of, along Hwy 139 Adin 1584 Comment
  UC1583976  Antennaria rosea G. Schoolcraft 1990-7-2 2103 Lassen w of Cold Spring Mtn. 1645 Comment
  UC1609112  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-14 5506 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  UCD159578  Anthemis cotula D. S. Park 2011-8-24 315 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  RSA125375  Anthoxanthum aristatum P. H. Raven, Otto T. Solbrig 1958-6-16 13228 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  CHSC117198  Aphyllon fasciculatum Lowell Ahart; John Dittes 2016-6-7 20997 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC93250  Apocynum cannabinum John Dittes; Scott Chamberlain 2004-6-28 1021 Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow. 1496 Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  CHSC4814  Aquilegia formosa var. truncata R. Carter 1967-7-29 573 Lassen Found in Murrer's meadow, W side where canal runs. 1584 Comment
  NY112363  Arabis hirsuta G. Schoolcraft 1985-7-23 1479 Lassen 1.5 miles NW of Coon Camp Springs 35-10-23. 1798.3 Comment
  SEINET228463  Arabis holboellii var. pinetorum Reed C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just north of Eagle Lake. Comment
  RSA0001920  Arabis sabulosa var. frigida Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  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
  NY119616  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81181 Lassen 5.3 miles S of junction of California Hwy. 139 and County Road 201 Comment
  NY119617  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83226 Lassen Above Laufman Ranger Station, Plumas National Forest, 4.5 miles E of U.S. Hwy. 395 Comment
  SEINET5340852  Arabis sparsiflora var. subvillosa R. C. Rollins, K. W. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake. Comment
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  POM339728  Arctostaphylos manzanita subsp. manzanita F. R. Fosberg 1969-8-16 51425 Lassen (California Registered Historical Landmark 678) 10 mi. west of Susanville. Comment
  CAS-BOT-BC45910  Arctostaphylos nevadensis Hans Leschke 1957-7-12 s.n Lassen Above Cold Boiling Lake 2316 Comment
  CHSC5245  Arctostaphylos nevadensis M. West 1946-7-12 Lassen Eagle Lake. Silver Lake. 1981 Comment
  UC773875  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
  CHSC23558  Arctostaphylos patula subsp. patula W. O. Baum 1971-6-21 41 Lassen E slope of Gallatin Peak on fire trail. 1920 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
  UC8100  Arenaria congesta var. congesta M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  POM101442  Arenaria congesta var. simulans Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA313571  Arenaria congesta var. simulans J. R. Shevock 1972-5-20 1816 Lassen Along Hwy 395; near Ravendale. 1372 Comment
  JEPS100348  Arenaria kingii var. glabrescens Dean W. Taylor 2001-6-28 17816 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  CAS-BOT-BC401655  Argemone munita subsp. munita John Thomas Howell 1955-7-19 30816 Lassen East side of Beckwourth Pass 1493 Comment
  RSA11786  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3345 Lassen Hills north of Susanville Comment
  RSA152609  Argemone munita subsp. rotundata I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. e of Susanville Comment
  CHSC5195  Arnica chamissonis J. Wolf 1946-6-20 Lassen Grasshopper Valley. 1624 Comment
  UC1776710  Arnica chamissonis G. Schoolcraft 1997-8-1 2385 Lassen About 2 miles W of Boot Lake 2255 Comment
  HSC12534  Arnica chamissonis M. S. Baker 28 Jul [year missing] Lassen South of Eagle Lake Comment
  CAS-BOT-BC82313  Arnica cordifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 Comment
  CDA10117  Arnica cordifolia T. C. Fuller 1963-7-15 10896 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  SEINET3082318 Image available Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen Yellow Pine Forest, 1 mile east of Fredonyer Pass, on State Highway #36. 1740 Comment
  CHSC89756  Arnica mollis L. P. Janeway 2004-6-26 8166 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC77183  Arnica parryi subsp. sonnei G. Schoolcraft 1994-8-2 2400 Lassen About 2 miles west of Boot Lake. 2286 Comment
  RSA702450  Arnica sororia L. P. Janeway 2004-6-26 8166 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UCD129145  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UCD129182  Artemisia arbuscula A. A. Beetle 1957-8-16 12766 Lassen 15 miles south of Alturas. Comment
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Jul 11 2013
  CHSC72214  Artemisia arbuscula subsp. arbuscula Vernon H. Oswald 1998-9-14 9621 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  GMDRC6956  Artemisia arbuscula subsp. arbuscula J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31433 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  SBBG95821  Artemisia cana G. K. Helmkamp 1990-9-23 A- 5 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  UC1479613  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 195 Lassen Painter Flat 1719 Comment
  UC1507398  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 194 Lassen Painter Flat 1722 Comment
  UC29681  Artemisia douglasiana M. S. Baker and Frank Nutting 1894-1 Lassen Bridge Creek Comment
  UC1776711  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfield and Bass Hill Roads 1322 Comment
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Aug 12 2019
  CHSC5196  Artemisia ludoviciana M. West 1946-7-9 Lassen Eagle Lake. Pine Creek, Eagle Lake. 1580 Comment
  JEPS97304  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald and L. Ahart 1995-8-14 7196 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
  SEINET10722478  Artemisia ludoviciana subsp. ludoviciana Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 134 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  UC1776685  Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains E of Ravendale, CA 1627 Comment
  UC762615  Artemisia nova Robert F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  CHSC5197  Artemisia tridentata P. Balch 1955-7-10 Lassen Fields adjoining Stafford's Ranch, Eagle Lake. 1584 Comment
  CHSC7180  Artemisia tridentata Lynn R. Thomas 1969-4-17 99 Lassen Ca. 100 yds down hillside W of Rice Canyon Rd. across small creek, 5 mi N of junction with 'back road to Litchfield', 12 mi E of Susanville. 1310 Comment
  CAS-BOT-BC97324  Artemisia tridentata subsp. tridentata Margaret Williams; Steven Williams 1974-7-26 74 -L-4 Lassen area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 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
  RSA0092309  Artemisia tridentata subsp. tridentata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31432 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  RSA758317  Artemisia tridentata subsp. tridentata Doug Goldman 2004-11-5 2935 Lassen To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake 1256 Comment
  SEINET3360477 Image available Artemisia tridentata subsp. tridentata A. A. Beetle 1957-8-16 12891 Lassen Between Ravendale and Termo. Comment
  CAS-BOT-BC99281  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  SEINET195654  Artemisia tridentata subsp. vaseyana G. Thomas Robbins 1945-10-7 2155 Lassen Lassen National Forest; Harvey Mountain, 2-3 miles northeast of burgess Spring, Harvey Valley 1676 Comment
  SEINET199764  Asclepias speciosa George A. Fischer 1933-7-29 F- 276 Lassen Lassen National Forest; Stringer, in southwest corner of N.F. 1695 Comment
  CDA5651  Asperugo procumbens Ancell May 1940 Lassen Susanville. 0 Comment
  CHSC66717  Aster elatus Vernon H. Oswald; Lowell Ahart 1996-8-1 8120 A Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  CHSC25906  Astragalus K. R. Stern 1967-7-1 2468 Lassen Roadside, Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  RSA0006691  Astragalus accidens var. hendersonii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 108749 Lassen South of Constantia. 1463 Comment
  CAS-BOT-BC177439  Astragalus andersonii Margaret Williams 1974-7-27 74 -L-55 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC7674  Astragalus andersonii Beverly J. Wise 1969-5-9 51 Lassen 10.2 mi. West of Susanville. North side of junction with hwy 36 on Fredonyer campground rd. Forest service rd. no. 8246. 1615 Comment
  CDA26598  Astragalus andersonii T. C. Fuller 1965-6-3 13608 Lassen Driveway to the cemetery, Janesville. 0 Comment
  SEINET5323325  Astragalus andersonii M. J. Williams 1974-8-4 L- 74 -83 Lassen west of Hwy 395, near Hwy 70 in former burn area 1494 Comment
  HSC42428  Astragalus anxius Barbara Kelly 1977-8-9 558 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  HSC69614  Astragalus anxius Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  NY790602  Astragalus argophyllus var. argophyllus A. Tiehm 1986-5-12 10347 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CAS-BOT-BC178767  Astragalus canadensis var. brevidens Leo Whitney 1934-7-4 2073 Lassen Sand dunes near north shore of Eagle Lake, Lassen N.E. 158 Comment
  CHSC5278  Astragalus canadensis var. brevidens 1944-6-28 Lassen Eagle Lake. 1615 Comment
  RSA111041  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5676 Lassen N or Doyle. 1265 Comment
  CHSC23432  Astragalus curvicarpus var. curvicarpus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5816 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CHSC60738  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-6-14 5519 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
  CHSC60899  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Edge of woods between the road and railroad. 1709 Comment
  NY803536  Astragalus curvicarpus var. curvicarpus P. Gallian 1971-6-2 509 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  NY803535  Astragalus curvicarpus var. curvicarpus M. J. Williams 1973-5-12 73-C- 16 Lassen Near Herlong Turn from Highway 395 1250 Comment
  NY803537  Astragalus curvicarpus var. curvicarpus LeDoux 1973-5-24 862 Lassen Collected on road bank 24 miles north of California state line of Highway 395 Comment
  CHSC37683  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  UC13367  Astragalus filipes M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC1583579  Astragalus filipes G. Schoolcraft 1990-6-13 2093 Lassen in John's Valley about 4 mi s Nubierber; s of Nubieber in John's Valley 1371 Comment
  RSA339170  Astragalus filipes Margaret J. Williams 1983-7-31 339170 Lassen Ash Valley road, 17 mi. from Aden. 1829 Comment
  SEINET5325729  Astragalus filipes M. J. Williams 1983-7-31 83- 125 -1 Lassen Ash Valley road, 17 mi from Aden. 1829 Comment
  CHSC116921  Astragalus geyeri J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CAS-BOT-BC186858  Astragalus gibbsii Louella Bass 1973-6-3 96 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC186862  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford 1264 Comment
  RSA121850  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley 1341 Comment
  SD43503  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford, dry silty flats 1260 Comment
  CAS-BOT-BC186916  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  POM180437  Astragalus inversus T. S. Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  POM23663  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CAS-BOT-BC229045  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CHSC13508  Astragalus lentiginosus J. Pitts 1972-6-22 253 Lassen 130 yds. n of Eagle Lake Biology Station by an alkali marsh. Comment
  UCD35735  Astragalus lentiginosus Beecher Crampton 1960-6-20 5738 Lassen Harvey Valley, 6 miles north of Bogard Ranger Station. 1676 Comment
  CAS-BOT-BC187156  Astragalus lentiginosus var. chartaceus John Thomas Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  NY675509  Astragalus lentiginosus var. chartaceus H. D. D. Ripley 1943-6-14 5744 Lassen Hidden Valley east of Susanville 1311 Comment
  UC1537105  Astragalus lentiginosus var. floribundus Gordon H. True Jr. 1938-7-8 903 Lassen n Hot Spring Mountain (Mud Flat); n of Hot Spring Mountains, Mud Flat 1371 Comment
  JEPS114628  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
  UC1609460  Astragalus lentiginosus var. lentiginosus Vernon H. Oswald and Lowell Ahart 1993-7-8 5663 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi n Hwy 44 (se edge Poison Lake); se edge Poison Lake 1709 Comment
  SEINET10486634  Astragalus malacus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2599 Lassen Hallalujah jct intersection of us hwy 395 & calif hwy 70; in open waste area Adjacent to artemisia tridentata community. 1433 Comment
  SEINET241244 Image available Astragalus pulsiferae S. L. Welsh 2001-6-14 28258 Lassen E of Hwy. 395, road to Rams Horn Spring campground. Comment
  NY621934  Astragalus pulsiferae var. coronensis S. L. Welsh 2001-6-14 28158 Lassen E of Hwy. 395, road to Rams Horn Spring campground 1539.2 Comment
  CAS-BOT-BC192855  Astragalus pulsiferae var. pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen East slope of Shaffer Mtn. Comment
  NY694132  Astragalus pulsiferae var. pulsiferae M. J. Williams 1973-7-26 74-L- 16 Lassen 2 miles west of Highway 395, near Highway 70 1494 Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  HSC28311  Astragalus purshii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19269 Lassen Harvey Valley near Cone Springs Comment
  CHSC57280  Astragalus purshii var. lagopinus Mary Meyer 1980-7-14 Lassen Ash Valley. 1524 Comment
  CAS-BOT-BC194087  Astragalus purshii var. purshii Louella Bass 1973-6-12 102 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CAS-BOT-BC194092  Astragalus purshii var. purshii Farris Farris 1935-5-20 s.n. Lassen Three miles southwest of Susanville 1310 Comment
  JEPS108699  Astragalus purshii var. purshii H. Chappel, K. Moran, K. Strassman 2002-6-27 ALT- 13 Lassen Pit River Valley / Beaver Creek 1258 Comment
  CAS-BOT-BC192972  Astragalus purshii var. tinctus John Thomas Howell 1934-6-10 11862 Lassen Honey Lake Valley 37 miles s. of Susanville Comment
  CHSC68747  Astragalus purshii var. tinctus Vernon H. Oswald; Lowell Ahart 1997-5-27 8517 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat) 2.6 mi northeast of Hwy. 139. 1682 Comment
  UC1128894  Astragalus purshii var. tinctus K. E. Bradshaw 1939-5-27 235 Lassen Black Mountain Experimental Forest-Plot 39-1 center of plot Halls Flat Quad., Lassen National Forest Comment
  RSA339987  Astragalus whitneyi Noel Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 2195 Comment
  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
  CHSC5284  Astragalus whitneyi var. siskiyouensis V. Holt 1945-6-1 Lassen Eagle Lake. Comment
  RSA110171  Astragalus whitneyi var. siskiyouensis H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5747 Lassen Hidden Valley E of Susanville. 1585 Comment
  CHSC107993  Athysanus pusillus Lowell Ahart; John Dittes 2011-6-20 17491 Lassen About 40 yards east of the stream, about 70 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
  SEINET5344853  Atriplex canescens S. Massed, Jared Jaggers, D. Mathews 2011-10-24 Seeds of Success. NV 030 . Carson Lassen Northeast of Doyle. On the Northern slopes of Fort Sage Mountains. 1291 Comment
  CHSC36483  Atriplex confertifolia Margaret E. Halloran 1982-6-2 6 Lassen Ravendale Rd e of Horse Lake. 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
  UCR244045  Atriplex gardneri var. falcata Jim Andre 1993-6-1 19715 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CHSC63702  Atriplex rosea Vernon H. Oswald 1994-9-6 6468 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. Common in the parking lot and along the levee road on the N side of the creek. 1490 Comment
  UC1136349  Atriplex truncata E. Sawyer 1935-6-27 217 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CAS-BOT-BC106572  Balsamorhiza deltoidea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  UC1794995  Balsamorhiza hookeri R. K. Brummitt 1998-5-17 19897 Lassen 12 km W of Susanville, E foot of Fredonyer Pass 1400 Comment
  JEPS103175  Balsamorhiza hookeri G. Schoolcraft 2000-4-26 2891 Lassen 1.8 miles W of Highway 395 on Shaffer Mountain Road 1554 Comment
  CHSC98317  Balsamorhiza macrolepis var. platylepis B. Castro; L. P. Janeway 2005-7-10 1500 Lassen Northern High Sierra Nevada. Nr Plumas Co line. Crest of the Diamond Mtns, overlooking NW end of Honey Lake, at N end of Stony Ridge. At NE edge of windswept, low flat ridge off end of jeep road ca 0.7 mi from its jcn with sharp bend in Rd 27N12, above headwaters of Stony Creek. 1993 Comment
  CHSC5200  Balsamorhiza sagittata 1944-7-9 Lassen Dow Butte. 2042 Comment
  JEPS114368  Barbarea orthoceras Lowell Ahart, John Dittes 2008-6-20 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 1263 Comment
  JEPS28469  Barbarea orthoceras George W. Gillett 1957-7-21 868 Lassen 300 yds n of trail summit Juniper Lake - Cameron Meadow trail; Lassen Volcanic National Park 2118 Comment
  SEINET11193258  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, intersection of Hwy 139 and Eagle Lake Road. 1494 Comment
  CHSC76094  Bassia hyssopifolia Lowell Ahart 1999-9-13 8206 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
  UCD56782  Beckmannia syzigachne Leo Whitney 1934-8-6 2210 Lassen Honey Lake Valley. Bank of Susan River. 1371 Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  UCD54547  Bergia texana Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2731 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  SEINET11193808  Berteroa incana W. Harnach 2006-5-31 1229 Lassen Long Valley, Anderson Ranch, Scott Road, ca 5.5 miles N of Hwy 70. 1457 Comment
  HSC95769  Bidens cernua Gordon Leppig, J. Cromwell 1997-7-27 616 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1542915  Bidens cernua G. Schoolcraft 1987-9-1 5380 Lassen 3.5 mi w of Madeline (along Ash Valley Road); Ash Valley Road 1639 Comment
  UC761894  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near Honey Lake (between Janesville and Standish) Comment
  CHSC4759  Bistorta bistortoides R. Carter 1967-7-14 613 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir in grassy open area. Comment
  CAS-BOT-BC128034  Blepharipappus scaber John Thomas Howell 1976-7-20 52032 Lassen In dried depression. about 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC128046  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CHSC93244  Blepharipappus scaber John Dittes; Scott Chamberlain 2004-6-28 1006 Lassen Modoc Plateau; Long Valley; ca. 2.3 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 2.7 air-miles west of Hwy 395, ca. 1.2 air-miles east of Plumas County line; near meadow edge. 1443 Comment
  HSC81800  Blepharipappus scaber Thomas W. Nelson, Jane P. Nelson 1980-7-6 6030 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  SEINET11261379  Blepharipappus scaber Stanley L. Welsh, N. Duane Atwood 2001-6-14 28151 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1540 Comment
  SEINET11261380  Blepharipappus scaber Robert L. Johnson, Mikel R. Stevens 2015-7-10 3922 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  SJSU4600  Blepharipappus scaber J. W. Tilden 1958-6-27 1287 Lassen Madeline Comment
  UC1924224  Blepharipappus scaber Debra Valov 2004-6-8 2004250 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC604683  Blepharipappus scaber Farris Farris 1935-5-20 Lassen Susanville 1341 Comment
  CAS-BOT-BC128031  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  CAS-BOT-BC14294  Boechera platysperma John Thomas Howell; Gordon H. True 1973-7-31 50040 Lassen Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak. 1737 Comment
  CHSC101060  Boechera puberula John Dittes 2008-5-22 1532 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 350 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, volcanic outcrop on northeast side of Willow Creek. 485 Comment
  JEPS114362  Boechera puberula Lowell Ahart, John Dittes 2008-6-19 14883 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  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-BC25510  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 miles west of Madeline. 1584 Comment
  CHSC91294  Boechera retrofracta Lowell Ahart; John Dittes 2005-6-2 11926 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  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
  CHSC36460  Boechera sparsiflora Susan H. Euing 1982-6-6 14 Lassen Pine Creek below fish trap. Comment
  CHSC99127  Boechera sparsiflora Lowell Ahart; John Dittes 2008-6-19 14885 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
  JEPS94610  Boechera sparsiflora Vernon H. Oswald and Lowell Ahart 1997-5-27 8512 Lassen on Forest Route 38N04 1.4 mi e Hwy. 139 ((between Hwy 139 near Willow Springs Guard Station and Coyote Flat), n of Susanville) 1645 Comment
  CAS-BOT-BC25707  Boechera sparsiflora H. D. Ripley; R. C. Barneby 1943-6-13 5702 Lassen South of Gifford. 1569 Comment
  CAS-BOT-BC25877  Boechera subpinnatifida John Thomas Howell 1934-6-10 11861 Lassen Honey Lake Valley, 37 miles south of Susanville. 1219 Comment
  UC1561877  Boechera subpinnatifida Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen Skeedaddle Mountains on NE side of Honey Lake, E of road over saddle on W side of range. 1645 Comment
  POM253282  Boisduvalia densiflora var. pallescens A. A. Heller 1938-7-28 15296 Lassen About a mile east of Westwood 1524 Comment
  POM46125  Boisduvalia glabella Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA339991  Boisduvalia stricta Noel Holmgren, Patricia K. Holmgren 1980-7-3 9492 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Hwy 395, 14.5 km (9 mi) airline distance southeast of Ravendale. 1700 Comment
  UC2118  Bolboschoenus fluviatilis J. Burtt Davy Jun 17 1897-Jun 24 1897 3313 Lassen Byers' Ranch Honey Lake Valley, Byers' Ranch 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
  CAS-BOT-BC457057  Brodiaea coronaria subsp. coronaria A. M. Vollmer; L. Beane 1953-7-1 105 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  RSA0065492  Bromus breviaristatus Marion P. Harthill 1971-6-21 208 Lassen Susanville. Comment
  CHSC36451  Bromus briziformis Susan H. Euing 1982-6-2 5 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of Hwy 139 and Ravendale Rd. 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
  SEINET3921581  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 Comment
  CAS-BOT-BC149582  Bromus carinatus var. carinatus Clare B. Hardham 1971-8-22 18403 A Lassen Sierra Nevada. Diamond Mountain. Comment
  UC1024795  Bromus carinatus var. carinatus Leo Whitney 1935-6-10 3212 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10 Lassen National Forest; , Fruit Grower's Supply Company Comment
  UCD32660  Bromus commutatus Beecher Crampton 1954-7-5 2056 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD59488  Bromus diandrus L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
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Jun 24 2009
  UC70688  Bromus inermis subsp. inermis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CHSC7690  Bromus madritensis subsp. rubens Beverley J. Wise 1969-5-23 126 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1554 Comment
  UC1037147  Bromus marginatus Leo Whitney 1935-7-6 3429 Lassen near Pit River (Lassen National Park); Lassen National Park Comment
  CAS-BOT-BC162178  Bromus orcuttianus John Thomas Howell 1934-7-10 12554 Lassen Black's Mountain. Comment
  CAS-BOT-BC162181  Bromus orcuttianus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49472 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC162017  Bromus racemosus Louella Bass 1973-5-29 EV 66 Lassen Elysian Valley. 1325 Comment
  CAS-BOT-BC161656  Bromus secalinus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1615 Comment
  RSA0062688  Bromus subvelutinus Marion P. Harthill 1971-6-21 210 Lassen Susanville. Comment
  CAS-BOT-BC161576  Bromus suksdorfii Clare B. Hardham 1971-8-22 18407 Lassen Diamond Mountain. Comment
  CHSC112781  Bromus tectorum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18751 Lassen Drainage filled with dirt from the construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1924566  Bromus tectorum Debra Valov 2006-5-28 2006038 Lassen Bieber off County Rd. A2 ca 12 km east of Hwy 299 1279 Comment
  UC773967  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S 409 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  SEINET4564915  Bromus tectorum H. Durio 1979-5-23 4221 Lassen Meyers Ranch, Adin Comment
  UC1142960  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Westwood Junction Lassen National Forest 1737 Comment
  CHSC112410  Callitriche heterophylla Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18750 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
  UCD169625  Callitriche palustris R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1615 Comment
  SEINET3828391  Callitriche verna R. F. Thorne, Larry E. De Buhr 1975-1 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC4430  Calochortus leichtlinii K. R. Stern 1967-7-1 2473 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  SEINET3260040 Image available Calochortus macrocarpus Marcus E. Jones 1897-7-1 Lassen Susanville at Perkin's Ranch. 1520 Comment
  SDSU5718  Calystegia occidentalis subsp. occidentalis D. F. Howe 1964-8-1 3915 Lassen Modock National Forest. 1829 Comment
  UC1134560  Camassia quamash subsp. breviflora A. Simontacchi 1940-5-17 736 Lassen 5.9 mi s of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 Comment
  CAS-BOT-BC497552  Camassia quamash subsp. breviflora John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49223 Lassen Elysian Valley northwest of Janesville 1325 Comment
  HSC15435  Camassia quamash subsp. breviflora Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  NY661118  Camelina microcarpa G. Schoolcraft 2000-5-24 2896 Lassen Near Ducasse Reservoir south of Termo, CA. 1645.9 Comment
  RSA339990  Camissonia andina Noel Holmgren, Patricia K. Holmgren 1980-7-5 9521 Lassen Lassen County: upper Smoke Creek drainage, 20.4km (12.7miles) from Hwy 395 via Rye Patch Canyon, 24km (15miles) airline distance SE of Ravendale 1585 Comment
  POM39324  Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  HSC22959  Camissonia claviformis John Pratt 1970-7-5 65 Lassen 1250 Comment
  NY851232  Camissonia claviformis var. cruciformis A. A. Heller 1938-6-23 15211 Lassen U.S. Highway #395, about midway between Mapes and Secret Valley 1372 Comment
  CHSC93568  Camissonia contorta Lowell Ahart; John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  HSC68913  Camissonia minor Gary Schoolcraft 1980-6-11 265 Lassen W of Wendel 1220 Comment
  CHSC93689  Camissonia parvula Lowell Ahart; John Dittes 2005-6-1 11852 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
  RSA186551  Camissonia parvula Peter H. Raven 1962-5-28 17870 Lassen Along U.S. Highway 395, 32 miles south of Milford Comment
  NY851778  Camissonia pubens W. W. Eggleston 1911-5-29 6741 Lassen Vicinity of Doyle Station 1290 Comment
  HSC16514  Camissonia tanacetifolia K. P. St. John 1965-5-6 29 Lassen 6 mi. N of Litchfield on Hwy. 395 Comment
  NY852079  Camissonia tanacetifolia P. H. Raven 1963-5-29 18426 Lassen Along U. S. Highway 395 0.9 mile north of Ravendale Comment
  CAS-BOT-BC160834  Camissonia tanacetifolia subsp. quadriperforata W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC160869  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17876 Lassen In clayey field 0.5 miles north of Ravendale 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
  CHSC99732  Cardamine oligosperma Lowell Ahart; John Dittes 2008-6-20 14942 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  RSA149125  Cardaria pubescens I. L. Wiggins, Dorothy Wiggins 1961-6-16 16529 Lassen 4.1 miles E of Bieber. Comment
  UCD163081  Carex Jack Major 1966-6-24 Lassen Modoc National Forest. Long Valley. 3 airline miles southwest of Patterson Guard Station. (Exact location unknown. Coordinates estimated by label maker.) 1981 Comment
  CHSC85992  Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  JEPS28338  Carex angustata George W. Gillett 1957-7-22 883 Lassen campsite near s end of lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  HSC95168  Carex cusickii Gordon Leppig, J. Cromwell 1997-7-26 600 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC110089  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  CHSC113778  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highwy 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  POM80803  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC2031876  Carex densa Nick Otting and Bruce Newhouse 2003-7-17 703 Lassen Cascade Mountains, Susan River, 2 air miles west of Susanville. Comment
  UC190403  Carex douglasii M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixey Valley Comment
  UC1924574  Carex douglasii Debra Valov 2006-5-29 2006025 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1279 Comment
  CAS-BOT-BC19778  Carex douglasii Clarence Roy Quick 1962-6-17 32 -18 Lassen sagebrush flat, north of DeLasmutt Ranch on old dirt road to Blacks Mountain E.F. Headquarters. 1615 Comment
  UCD140286  Carex douglasii James P. Smith; John Sawyer 1971-5-23 4664 Lassen along California 139, 1 mile south of junction with road to Thermo. Comment
  HSC95229  Carex echinata subsp. echinata Gordon Leppig, Tony LaBanca 1997-6-28 517 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS118277  Carex filifolia var. erostrata Lowell Ahart, John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SEINET7559362 Image available Carex fracta Barbara L. Wilson, Richard Brainerd, Bruce Newhouse 2004-8-28 11194 Lassen Near Bluff Falls in the Lassen National Forest, approximately 0.7 air mile south of the south boundary of Lassen Volcanic National Park on Highway 89. 1981 Comment
  HSC103598  Carex leporinella Thomas W. Nelson, Jane Nelson 1985-8-10 8012 Lassen Along north side of Silver Lake campground 1829 Comment
  CDA33106  Carex limosa Gordon Leppig, J. Cromwell 1997-7-27 610 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC96450  Carex limosa Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC46422  Carex mariposana D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19178 Lassen Harvey Valley near Cone Springs Comment
  UC2031882  Carex microptera Nick Otting and Danna Lytjen 2003-7-15 692 Lassen Sierra Nevada Mountains, Diamond Mountain, 1500 feet southeast of summit, 7.5 air miles south-southwest of Susanville. Comment
  CAS-BOT-BC31946  Carex microptera Clare B. Hardham 1971-8-22 18373 Lassen Streamside, Diamond Mt. 2346 Comment
  UC2015854  Carex microptera Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4447 Lassen Lassen Volcanic National Park. Lassen Peak, above parking area. Comment
  SEINET7568445 Image available Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen Coble Mountain 7.5' Quad. 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
  CHSC29957  Carex multicostata Robin L. Ondricek 1978-6-27 78 Lassen On Coleman Lake Rd., .7 mi ne of Lassen Co. Rd. A1. 1950 Comment
  CHSC96455  Carex nebrascensis Gordon Leppig 1998-8-17 1053 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CHSC99782  Carex nebrascensis Lowell Ahart; John Dittes 2007-6-20 15019 Lassen On wet soil or in shallow water on the north side of the levee, about 90 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC1142949  Carex nebrascensis A. L. Hormay 1941-6-18 7 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC2031879  Carex pachystachya Nick Otting and Dick Brainerd 2003-7-17 700 Lassen Cascade Mountains, Susan River, 4 air miles west of Susanville. Comment
  CAS-BOT-BC118399  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49193 Lassen Elysian Valley, northwest of Janesville. 1325 Comment
  CHSC77249  Carex praegracilis G. Schoolcraft 1997-7-30 2625 Lassen W slope of Diamond Mtn. 1889 Comment
  CHSC77250  Carex praegracilis G. Schoolcraft 1995-5-23 2487 Lassen Three Springs. 1554 Comment
  HSC48074  Carex praegracilis D. H. Norris, F. J. Hermann 1972-5-17 22629 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  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
  UC190401  Carex praegracilis M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CAS-BOT-BC118400  Carex praegracilis John Thomas Howell 1975-7-23 51407 Lassen Wet ground along Hwy 395 between Johnstonville and Jonesville 1280 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  UC2031874  Carex sheldonii Nick Otting and Danna Lytjen 2003-7-21 714 Lassen Modoc Plateau, Cedar Creek near Moon Lake, 6.25 air miles east-northeast of Madeline. Comment
  CDA33169  Carex simulata Gordon Leppig, J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch Comment
  UC1142951  Carex simulata A. L. Hormay 1941-6-23 14 Lassen Burgess Spring Lassen National Forest 1676 Comment
  CHSC77246  Carex subfusca G. Schoolcraft 1998-7-7 2754 Lassen Along Pine Creek NE of Fredonyer Peak. 1645 Comment
  CAS-BOT-BC116607  Carex subfusca Clare B. Hardham 1971-8-22 18383 Lassen Diamond Mountain streambed. 2133 Comment
  SEINET4170122  Carex subfusca Unknown 1966-6-24 Lassen Above Blue Lake, Warner Mountains, ca. 18 mi airline mi S. E. of Likely 1905 Comment
  HSC95282  Carex vesicaria Gordon Leppig 1998-6-12 932 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA517387  Carex whitneyi Leland S. Smith 1922-7-23 75 Lassen Lassen National Forest. Comment
  RSA220022  Carex whitneyi Beecher Crampton 1964-6-26 s.n. Lassen Ca. 4 miles SSE Bogard Ranger Station, Lassen National Forest. Comment
  CAS-BOT-BC248944  Castilleja Mike Vasey 1990-6-30 9055 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CHSC14085  Castilleja angustifolia K R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5841 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  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
  CAS-BOT-BC249616  Castilleja applegatei subsp. pinetorum Doris Kildale Gillespie 1930-5-13 9367 Lassen Between Susanville and Janesville Comment
  CHSC36455  Castilleja applegatei subsp. pinetorum Susan H. Euing 1982-6-5 9 Lassen Ca. 3 1/2 mi s of jct of forest service roads 5.16 and 5.17. Comment
  HSC23468  Castilleja applegatei subsp. pinetorum John Pratt 1970-6-21 29 Lassen 1738 Comment
  JEPS85742  Castilleja applegatei subsp. pinetorum Roy E. Buck and Robert A. Price 1988-6-26 1030 Lassen ca 0.5 air mi n Fredonyer Peak main summit (on subsidiary peak, ca 30 air mi nne of Susanville); Fredonyer Peak 2377 Comment
  UC1137290  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC199398  Castilleja applegatei subsp. pinetorum Franklin P. Nutting Lassen Dixie Mts. Comment
  UC773848  Castilleja applegatei subsp. pinetorum L. R. Short and J. Warren 1936-6-5 S- 378 Lassen Burgess Spring Experiment Range; Lassen Forest 1792 Comment
  CHSC65124  Castilleja arachnoidea Vernon H. Oswald; Lowell Ahart 1995-7-24 7134 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W od Upper Stephens Medws., just S of Pine Creek. 1950 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
  UC1137570  Castilleja campestris subsp. campestris A. Simontacchi 1940-6-30 913 Lassen s shore Government Lake; Lassen National Park, Halls Flat Quad. 1524 Comment
  UC604559  Castilleja campestris subsp. campestris C. W. Sharsmith 1938-7-18 3631 Lassen 2 mi s Madeline; Madeline Plains Comment
  UC725999  Castilleja campestris subsp. campestris A. A. Heller 1938-6-23 15218 Lassen between Termo and Madeline (along U.S. Hwy 395) 1615 Comment
  UCR244105  Castilleja chromosa Jim Andre, G. L. Clifton 1993-6-9 19696 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
  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
  JEPS118272  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
  RSA46749  Castilleja linariifolia J. T. Howell 1934-6-10 11885 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  UC584315  Castilleja linariifolia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2281 Lassen e slope and summit Diamond Mt.; Diamont Mt. 2194 Comment
  CDA41236  Castilleja linariifolia T. C. Fuller 1980-8-5 20313 Lassen Along east side of Tuledad Road, 7.4 km. southeast of the campground on the east shore of Dodge Reservoir, northeast of Ravendale. 0 Comment
  JEPS10806  Castilleja miniata Brown and Wieslander 1922-7-23 67 Lassen Martin Springs; Eagle Lake Comment
  CAS-BOT-BC244888  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen meadows foot of Lassen Butte. Lassen Butte Region Comment
  CHSC81564  Castilleja minor subsp. minor Vernon H. Oswald 2001-9-26 10058 Lassen Dakin Unit of Honey Lake Wildlife Area. 1219 Comment
  CAS-BOT-BC240999  Castilleja pilosa Alice Eastwood 1940-6-15 8318 Lassen Said Valley 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
  CHSC5902  Castilleja pilosa J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  JEPS76165  Castilleja pilosa T. I. Chuang and Fei-Mei Chuang 1977-7-25 7658 Lassen about 0.25 mi s Madeline (on Highway 395) Comment
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1012185  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen 5 mi s Ravendale (Route 395) 1645 Comment
  CHSC108002  Castilleja tenuis Lowell Ahart; John Dittes 2011-6-20 17499 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC99131  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-19 14874 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS88198  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1996-6-17 7802 Lassen 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy 36, n side of trail between Devils Corral Trailhead and the 6.0 mi post); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC1483853  Castilleja tenuis G. Schoolcraft 1980-7-16 316 Lassen near Nelson Corral Reservoir 1804 Comment
  UCD164167  Caulanthus major N. Ivalu Cacho; Sharon Y. Strauss, Bryan T. Drew 2010-7-5 IC-SS 131 - Lassen Fredoyner Peak; on rocky outcrop on summit. 2393 Comment
  RSA0027351  Caulanthus major John F. Emmel 1994-7-17 1328 Lassen Summit area of Observation Peak. 2378 Comment
  CHSC115601  Caulanthus major var. nevadensis Lowell Ahart; John Dittes 2015-7-14 30329 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 of Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 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
  CHSC46505  Ceanothus cordulatus Lowell Ahart 1974-7-9 514 Lassen Growing along the edge of Eagle Lake Road on dry stony soil, about 4 miles west of Susanville. 1584 Comment
  CHSC4984  Ceanothus prostratus R. Clicquennoi 1967-7-4 5 Lassen 5 mi s of Eagle Lake Biology Station on Gallatin Beach Rd. Comment
  CHSC7726  Ceanothus prostratus Beverly J. Wise 1969-4-20 89 Lassen Big Springs; 1/4 mi. west of Hwy 144, approx. 8 mi. north of Susanville. 1341 Comment
  CHSC7727  Ceanothus prostratus Beverly J. Wise 1969-4-21 90 Lassen Approx. 2 mi. past Susanville old dump on old dump road. 1341 Comment
  RSA38478  Ceanothus prostratus P. A. Munz 1947-5-18 11864 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1509 Comment
  SEINET10493654  Ceanothus prostratus Mary Merello 1993-6-28 Merello 748 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1281295  Ceanothus prostratus H. E. McMinn 1941-8-27 5402 Lassen 3.5 mi from Pine Cone Inn (5 mi from Newbieber [Neubieber?]); 5 mi from Neubeiber Comment
  JEPS42164  Ceanothus velutinus Brown and Wieslander 1921-9-1 83 Lassen Martin Sring Eagle Lake Comment
  CAS-BOT-BC52439  Ceanothus velutinus var. velutinus Jeanne Janish; Carl Janish 1938-9-4 s.n. Lassen above upper Twin Lake, Lassen National Park 2042 Comment
  SEINET10690337  Ceanothus velutinus var. velutinus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  UCD130022  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen east side of Highway 395 to Madelaine, 1.9 mile north of Termo. Comment
  CDA7251  Centaurea maculosa T. C. Fuller 1962-8-28 9472 Lassen West side of Highway 395, 1.7 miles south of Doyle. 0 Comment
  CDA7341  Centaurea squarrosa Loring White Jul 1950 Lassen Kramer Ranch, Big Valley, just over line Modoc-Lassen. 0 Comment
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May 19 2009
  CDA35515  Centaurea squarrosa CDFA Staff 1986-6-18 s.n. Lassen Near Nubieber, off Hwy 299. 0 Comment
  CDA7336  Centaurea squarrosa T. C. Fuller 1966-7-2 14961 Lassen 0.1 mile to 0.9 mile south of the bridge at Pittville. 0 Comment
  UC1717201  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen w. side of Hwy 395, 1.7 mi. s. of Doyle Comment
  OBI4697  Centaurea virgata subsp. squarrosa T. C. Fuller, W. T. Parsons 1960-7-26 4873 Lassen 4 mi NW of Nubieber, Big Valley Comment
  CHSC7715  Cerastium fontanum subsp. vulgare Beverley J. Wise 1969-5-23 5 Lassen Susanville--833 Mark St. Garden. 1310 Comment
  CHSC99741  Cerastium glomeratum Lowell Ahart; John Dittes 2008-6-20 14966 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  CHSC23520  Cercocarpus ledifolius var. ledifolius Wayne O. Baum 1971-6-28 71 -47 Lassen E. slope of Gallatin Peak. 2103 Comment
  CHSC4884  Cercocarpus ledifolius var. ledifolius Bill Wilson 1967-7-19 208 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  RSA0027356  Chaenactis John F. Emmel 1994-7-17 1331 Lassen Summit area of Observation Peak. 2378 Comment
  HSC42418  Chaenactis douglasii var. douglasii Barbara Kelly 1977-8-9 560 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  CAS-BOT-BC276612  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-25 3755 Lassen Susanville, just W of town 1300 Comment
  JEPS107309  Chaenactis stevioides Lowell Ahart, John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction 1460 Comment
  HSC68932  Chaetadelpha wheeleri Gary Schoolcraft 1980-6-12 279 Lassen Near Skedaddle Creek on Wendel Hwy. 1238 Comment
  CHSC6251  Chamaebatiaria millefolium 1944-7-16 Lassen West side of Eagle Lake. 1584 Comment
  POM451345  Chamaebatiaria millefolium J. T. Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  CHSC21229  Chamaesaracha nana Robert A. Schlising 1974-6-20 3145 Lassen Near Lower Dry Lake, about 3 mi E of Eagle Lake. Comment
  NY1001400  Chamaesyce maculata G. Schoolcraft 1998-9-17 2810 Lassen Susanville BLM office 1268 Comment
  SEINET9250629  Chamaesyce maculata G. Schoolcraft 1998-1 2810 Lassen Susanville, BLM office. 1268 Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 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
  CHSC105236  Chenopodium berlandieri Lowell Ahart; John Dittes 2010-7-31 17021 Lassen About 40 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  JEPS97785  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC1587041  Chenopodium fremontii G. Schoolcraft 1991-7-31 2206 Lassen just s of Shinn Peak 2103 Comment
  CDA23377  Chenopodium hians J. T. Howell 1962-6-19 37889 Lassen 3 miles south of Hallelujah Junction. Comment
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  CHSC58839  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1992-7-16 5103 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
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Nov 1 2014
  CAS-BOT-BC260781  Chenopodium rubrum var. humile Malcom A. Nobs; S. Galen Smith 1949-7-22 1071 Lassen Northeast shore of Eagle Lake Comment
  CHSC6235  Chimaphila menziesii P. Balch 1955-7-22 Lassen Eagle Lake. Between Eagle Lake and Pittville road. 1676 Comment
  POM77432  Chimaphila menziesii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC6236  Chimaphila umbellata P. Balch 1955-7-22 Lassen Roadside between Eagle Lake and Pittville Road. 1676 Comment
  CAS-BOT-BC39671  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  JEPS57772  Chorizanthe watsonii W. L. Jepson 1918-8-2 7766 Lassen Beckwith Pass 1463 Comment
  SEINET10730905  Chrysolepis sempervirens Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 841 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10. T31N R7E S35 NW 1/4. 1980 Comment
  POM212177  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles form Bieber on the road to Alturas 1268 Comment
  RSA3038  Chrysothamnus parryi subsp. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  UCD38333  Chrysothamnus viscidiflorus Beecher Crampton 1954-5-11 1883 Lassen Beckwourth Pass. 1588 Comment
  CAS-BOT-BC106024  Chrysothamnus viscidiflorus subsp. lanceolatus Ynez Whilton Winblad 1935-9-23 s.n. Lassen Susanville Comment
  CAS-BOT-BC105903  Chrysothamnus viscidiflorus subsp. viscidiflorus Margaret Williams 1974-7-27 74 -L-56 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 - Sierra Nevada 1493 Comment
  CHSC65296  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald 1995-8-14 7183 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Roadside. 1645 Comment
  HSC103551  Chrysothamnus viscidiflorus subsp. viscidiflorus Thomas W. Nelson, Jane Nelson 1985-8-10 8030 Lassen Along north side of Silver Lake 1829 Comment
  UC921129  Chrysothamnus viscidiflorus subsp. viscidiflorus Vesta Holt 1945-8-11 Lassen Eagle Lake Comment
  CAS-BOT-BC162753  Chylismia claviformis subsp. cruciformis G. H. True 1937-7-10 791 Lassen Skeedaddle Comment
  UC1186580  Chylismia claviformis subsp. integrior G. I. Stage and R. W. Thorp 1959-6-20 59 -116 Lassen 9.6 mi n Litchfield Comment
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UCD59781  Cinna latifolia John Thomas Howell; G. H. True 1973-8-1 50346 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UCD159568  Cirsium D. S. Park 2011-6-27 305 Lassen Near Antelope Mt. 1999 Comment
  CAS-BOT-BC285336  Cirsium andersonii Annie M. Alexander; Louise Kellogg 1946-8-13 5156 Lassen West side of Eagle Lake Comment
  UCD18968  Cirsium andersonii Raymond D. Ratliff 1965-8-5 45 Lassen Lassen National Forest, Harvey Valley Allotment (HV 20-14). 1725 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
  CDA1124  Cirsium canescens T. C. Fuller 1966-7-22 14981 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1168  Cirsium cymosum G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2798 Lassen Secret Creek drainage, W side of Hwy 395 at foot of Saddle Rock. 15 mi. south of Ravendale. 0 Comment
  CAS-BOT-BC278007  Cirsium cymosum John Thomas Howell 1934-6-10 11908 Lassen Madeline Plains near Termo Comment
  JEPS30610  Cirsium cymosum var. cymosum Peter H. Raven with Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  JEPS30797  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13303 Lassen along US Hwy 395 8.0 mi n Madeline Comment
  JEPS30608  Cirsium douglasii var. breweri Peter H. Raven and Otto T. Solbrig 1958-6-17 13280 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  JEPS59279  Cirsium occidentale var. californicum W. L. Jepson 1918-8-4 7807 Lassen Horse Lake 1554 Comment
  RSA186825  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC280421  Cirsium ochrocentrum T. C. Fuller 1980-8-5 20311 Lassen East shore of Dodge Reservoir, 28 km. (17.5 mi.) northeast of Ravendale Comment
  CAS-BOT-BC280424  Cirsium ochrocentrum Lee E. Wheeler 1959-7-23 s.n. Lassen M. A. Mallory prop. Richmond Rd., ca. 4 mi SE/Susanville Comment
  CDA1523  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen Honey Lake; M.A. Mallory prop. Richmond Rd., about 4 mi. SE of Susanville. 0 Comment
  JEPS59259  Cirsium scariosum Brown and Wieslander 1922-7-23 91 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  CAS-BOT-BC169804  Cistanthe rosea H. D. Ripley; R. C. Barneby 1943-6-18 5464 Lassen Smoke Creek, NE of Viewland 1402 Comment
  CAS-BOT-BC233916  Cistanthe umbellata Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1676 Comment
  CAS-BOT-BC163165  Clarkia lassenensis Louella Bass 1983-6-10 6 -83 Lassen Lassen College Campus, Susanville Comment
  CAS-BOT-BC172562  Clarkia purpurea subsp. purpurea John Thomas Howell 1974-7-10 50550 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CAS-BOT-BC164867  Clarkia rhomboidea Louella Bass 1978-6-10 78 -1 Lassen Elysian Valley 1325 Comment
  UC1587045  Clarkia rhomboidea G. Schoolcraft 1991-7-30 2194 Lassen e side Widow Mountain 1889 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
  OBI76916  Claytonia rubra subsp. rubra Anthony Baniaga 2011-6-7 315 Lassen Lassen Natl Forest. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad 1747 Comment
  POM102012  Claytonia rubra subsp. rubra Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  UC1537370  Cleome platycarpa Gordon H. True Jr. 1937-6-27 792 Lassen near Skeedaddle 1524 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
  CHSC36465  Collinsia parviflora Heffrey R. Peek 1982-6-3 26 Lassen Ca. .9 mi w of jct of forest service roads 5.16 and 5.17 over Black Mountain. Ca. 20 yds e of 5.16. Comment
  CHSC71101  Collinsia parviflora Vernon H. Oswald; Lowell Ahart 1998-5-22 9126 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CHSC99505  Collinsia parviflora Lowell Ahart; John Dittes 2008-6-20 14916 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
  RSA0117250  Collinsia parviflora L. Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1023722  Collinsia parviflora Francis W. Pennell 1940-6-9 25752 Lassen 7 mi n of Madeline (Route 395); Route 395 1615 Comment
  UC1924582  Collinsia parviflora Debra Valov 2006-5-28 2006011 Lassen Bieber off County Rd. A2 c. 12 km east of Hwy 299 1279 Comment
  HSC63776  Collinsia parviflora Teresa Prendusi 1980-4-30 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  RSA60368  Collinsia parviflora E. K. Balls 1950-5-9 15951 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  SEINET10548304  Collinsia sparsiflora Mary Susan Taylor 1982-5-7 Taylor 4427 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  SEINET2445250  Collomia grandiflora Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9502 Lassen Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0 1890 Comment
  HSC63767  Collomia grandiflora Teresa Prendusi 1980-5-19 Lassen 1 mi. N of Saddle Rock, 16 mi. S of Ravendale along Hwy. 395 1524 Comment
  UC1924199  Collomia linearis Debra Valov 2005-8-20 2005229 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1279 Comment
  UC23683  Collomia linearis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC1123658  Collomia tinctoria A. Simontacchi 1940-5-28 778 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC23854  Collomia tinctoria M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC95333  Comarum palustre Gordon Leppig, Tony LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  NY704016  Conringia orientalis N. H. Holmgren 1980-7-3 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CDA3699  Conringia orientalis E. E. Fix 1961-6-1 Lassen E. Williams ranch, Termo. 0 Comment
  POM43099  Cordylanthus maritimus subsp. canescens Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  UC26324  Cordylanthus maritimus subsp. canescens J. Burtt Davy Jun 17 1897-Jun 24 1897 3396 Lassen Amedee Honey Lake Valley Comment
  UC761797  Cordylanthus ramosus R. F. Hoover 1940-9-28 4640 Lassen Leavitt Comment
  JEPS74320  Cordylanthus tenuis subsp. tenuis John Thomas Howell and Gordon H. True 1973-7-31 50019 Lassen on road from Janesville to Thompson Peak; Sierra Nevada, Diamond Range 1737 Comment
  UC1776697  Cornus sericea subsp. sericea G. Schoolcraft 1994-8-3 2424 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  RSA38461  Cornus stolonifera P. A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 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
  UC581294  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2346 Lassen about 4 mi se Willow Creek Range Station (se of Adin) 1767 Comment
  UC581208  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2216 Lassen just w ridge crest between Willow Creek Valley and Horse Lake 524 Comment
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Jul 18 2007
  UC581249  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2257 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Co.) Comment
  UC581270  Crepis modocensis subsp. subacaulis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2276 Lassen Diamond Mt.; summit and e slope Comment
  POM17695  Crepis monticola Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  POM230947  Crepis occidentalis E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1748 Lassen Ridge east of Red Rock. 1616 Comment
  UC581242  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2259 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville) Comment
  SEINET2144365 Image available Crepis occidentalis subsp. costata A. A. Heller 1938-6-23 s.n. Lassen Valley east of Fredonyer Pass, on state highway 36 Comment
  CAS-BOT-BC290752  Crepis occidentalis subsp. occidentalis John Thomas Howell 1934-6-10 11872 Lassen Janesville Comment
  CAS-BOT-BC376502  Crepis occidentalis subsp. occidentalis David D. Keck; J. Clausen 1935-6-24 3752 Lassen 2 miles south of Ravendale 1463 Comment
  POM253179  Crepis occidentalis subsp. pumila A. A. Heller 1938-6-23 15201 Lassen Along Highway 36 in the valley east of Fredonyer Pass Comment
  CAS-BOT-BC290821  Crepis occidentalis subsp. pumila G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-15 2362 A Lassen In Big Valley 2 miles west of Adin 1060 Comment
  CAS-BOT-BC290824  Crepis occidentalis subsp. pumila David D. Keck; J. Clausen 1935-6-25 3759 Lassen Susanville 1340 Comment
  POM203850  Crepis occidentalis subsp. pumila J. T. Howell 1934-6-10 11872 Lassen Janesville Comment
  CHSC67080  Cressa truxillensis Jeanne Boze 1981-6-11 106 Lassen Outer edge of Horse Lake, 11 1/2 mil. from 139 on Horse Lake Rd. 1539 Comment
  CAS-BOT-BC299713  Crocidium Louella Bass 1973-4-22 23 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC23441  Cryptantha K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5840 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  CHSC29967  Cryptantha affinis R. A. Schlising 1979-6-7 3450 Lassen Sof Eagle Lake, in Lassen National Forest, 5 mi N of Hwy 36, on Hwy A1. Comment
  HSC82192  Cryptantha ambigua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6043 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CHSC106580  Cryptantha circumscissa C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC71074  Cryptantha circumscissa Vernon H. Oswald; Lowell Ahart 1998-5-22 9135 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 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
  UCD54568  Cryptantha circumscissa Ellen Dean; Dawn Cunningham 2005-10-25 2751 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  POM73232  Cryptantha hendersonii Marcus E. Jones 1897-6-26 6900 Lassen Susanville, Perkin s Ranch. 1463 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
  JEPS124572 Image available Cryptantha intermedia var. grandiflora S. Hardinghaus 1967-7-11 167715 -114 Lassen 6 mi. S. of Eagle Lake where meets Hw 139 at west shore, on Hwy 139. Comment
  JEPS94832  Cryptantha pterocarya Vernon H. Oswald and Lowell Ahart 1998-5-22 9112 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0;.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  POM72228  Cryptantha torreyana Marcus E. Jones 1897-6-19 6862 Lassen Chat 1616 Comment
  UC24702  Cryptantha torreyana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  NY1112083  Cryptantha watsonii B. J. Ertter 1987-6-16 7187 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 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
  CDA39916  Cuscuta californica var. breviflora T. C. Fuller 1963-7-16 10922 Lassen Hwy 395 to Ravendale, 10 miles north of Litchfield. 0 Comment
  UC22937  Cycladenia humilis var. humilis Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  CHSC60296  Cymopterus terebinthinus var. californicus Mary Ann Showers 1992-6-13 2560 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  SBBG50491  Cynoglossum occidentale J. T. Howell 1974-7-9 50483 Lassen between Susanville and SW end of Eagle Lake 1828 Comment
  CHSC117528  Cyperus squarrosus Lowell Ahart; John Dittes 2016-7-13 21139 Lassen Scattered along the south edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1133514  Cyperus squarrosus H. S. Yates 1936-8-11 6065 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  CAS-BOT-BC208394  Dalea ornata Arnold Tiehm; Raymond Evans; James Young 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest if Litchfield 1371 Comment
  CHSC117527  Damasonium californicum Lowell Ahart; John Dittes 2016-7-13 21138 Lassen South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS32210  Damasonium californicum Jos. Grinnell 1928-6-26 Lassen Poison Lake Lassen Peak Region, Poison Lake 1737 Comment
  UC527  Damasonium californicum J. Burtt Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  RSA0011557  Damasonium californicum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  HSC68921  Danthonia californica Gary Schoolcraft 1980-7-28 329 Lassen E of Tule Mountain and S of Blue Lake. 2043 Comment
  UC1024914  Danthonia californica Leo Whitney 1935-6-25 3368 Lassen near Camp 10 <of?> Fruit Grower's Supply Company; Lassen National Forest Comment
  UC1609259  Danthonia californica Vernon H. Oswald and Lowell Ahart 1993-8-3 5755 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  CAS-BOT-BC192327  Danthonia unispicata Parkison 1916-6-10 15 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CAS-BOT-BC192330  Danthonia unispicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50691 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC141772  Dasiphora fruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50669 Lassen Cirque-like hollow ne. of Diamond Mt. - Sierra Nevada 2255 Comment
  CHSC48859  Dasiphora fruticosa Vernon Oswald 1986-8-7 2270 Lassen Hwy 36, 12.6 mi e of the Lassen-Plumas County line, 0.8 mi e of Fredonyer Pass. Roadcut. 1706 Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CHSC7730  Delphinium andersonii Beverley J. Wise 1969-5-18 83 Lassen 7.7 mi. West of Susanville on Las. Co. Rd. 215 on the south side of the road. 1341 Comment
  UCD95650  Delphinium andersonii James D. Jokerst 1983-5-30 1794 Lassen Ca.1.5 mi. N of Eagle Lake, ca. 50 m W of Hwy. 139, ca. 1.0 I N of Eagle Lake Rd. Comment
  CAS-BOT-BC8991  Delphinium depauperatum Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  UC1131416  Deschampsia cespitosa H. S. Yates 1936-8-12 6087 Lassen Westwood Susanville Quad., Westwood Comment
  CAS-BOT-BC194257  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-9 12517 Lassen Bridges Creek Spring Comment
  JEPS71178  Deschampsia cespitosa subsp. cespitosa Brown and Wieslander 71 Lassen Comment
  POM203128  Deschampsia cespitosa subsp. cespitosa J. T. Howell 1934-7-9 12517 Lassen Bridges Creek Spring. Comment
  RSA126933  Deschampsia cespitosa subsp. cespitosa G. A. Fischer, I. H. Johnson 1933-7-14 F- 244 Lassen Patterson Flat 1738 Comment
  UC1142950  Deschampsia cespitosa subsp. cespitosa A. L. Hormay 1941-6-23 13 Lassen Burgess Spring Lassen Nt'l Forest, Burgess Spring 1676 Comment
  HSC69076  Deschampsia danthonioides Gary Schoolcraft 1980-7-16 313 Lassen Near Nelson Corral Reservoir. 1805 Comment
  JEPS120871  Deschampsia danthonioides Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18754 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1100291  Deschampsia danthonioides Malcolm A. Nobs and S. Galen Smith 1949-7-21 1059 Lassen 4 mi. n. Madeline Comment
  UC1131557  Deschampsia danthonioides A. Simontacchi 1940-6-4 813 Lassen 14.8 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CAS-BOT-BC201810  Deschampsia elongata Clare B. Hardham 1971-8-22 18377 Lassen Diamond Mountain 2133 Comment
  CAS-BOT-BC201813  Deschampsia elongata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49467 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1100290  Deschampsia elongata Malcolm A. Nobs and S. Galen Smith 1949-7-21 1058 Lassen 4 mi. n. Madeline Comment
  UCD63431  Deschampsia elongata L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  UCD63522  Deschampsia elongata Malcolm A. Knobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles N of Madeline. Comment
  UC1136915  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  CHSC13510  Descurainia sophia J. Pitts 1967-6-23 269 Lassen Front of Vesta Holt Hall, Eagle Lake Biology Station. Comment
  JEPS114350  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
  UC1126908  Descurainia sophia A. Simontacchi 1940-6-8 828 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CHSC7664  Dichelostemma multiflorum Beverley J. Wise 1969-6-1 141 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  CAS-BOT-BC290960  Dieteria canescens var. shastensis James Jokerst 1983-7-24 1879 Lassen Near Madeline Plains 1614 Comment
  UC1536890  Dieteria canescens var. shastensis G. H. True Jr. 1936-6-25 532 Lassen flats e of Harvey Ranger Station; Harvey Valley 1706 Comment
  CHSC9543  Diplacus mephiticus A. W. Harvilik 1967-6-24 36 Lassen Collected near the gas pump at Eagle Lake Biological Station. 1554 Comment
  SEINET13702844  Diplacus mephiticus G. Schoolcraft 1980-5-7 225 B Lassen Honey Lake Island. 1219 Comment
  SEINET13703366  Diplacus mephiticus F. B. Headley 1915-5-28 13 Lassen Honey Lake. Comment
  SEINET13703699  Diplacus mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8673 Lassen Near Old Chat. Comment
  CAS-BOT-BC151431  Diplacus nanus A. M. Vollmer; L. Beane 1953-7-1 104 Lassen Along Halls Flat Road, beginning 6 miles wet of Susanville to McArthur 1554 Comment
  CAS-BOT-BC151434  Diplacus nanus Louella Bass 1977-6-12 77 -1&2 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC208723  Distichlis spicata C. S. Robinson 1928-9-18 119 Lassen Hanna Estate, Morgan Springs 1508 Comment
  CHSC115787  Distichlis spicata Lowell Ahart; John Dittes 2015-7-14 20333 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
  SACT001015  Distichlis spicata var. stricta Malcolm Nobs, S. Smith 1949-7-22 Lassen Both staminate and pistillate, forming a dense turf around high water mark, alkaline. Comment
  CHSC36450  Dodecatheon alpinum Susan H. Euing 1982-6-4 4 Lassen Murrers Upper Meadow. Comment
  UC1553397  Dodecatheon conjugens G. Schoolcraft 1988-4-25 1783 Lassen Ash Valley RNA/ACEC 16 mi e Adin; Ash Valley RNA/ACEC e of Adin 1554 Comment
  UC1609465  Dodecatheon conjugens Vernon H. Oswald and Lowell Ahart 1993-5-12 5381 Lassen Forest Rd. 32N08 to Crater Lake 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, edge of meadowy opening along creek); Pine Creek 1737 Comment
  CHSC23459  Downingia K. R. Stern 1973-4-18 5853 Lassen Drying vernal pool area, ca. 0.2 mi n of Hwy 44 on Pittsville Rd. Comment
  RSA772873  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC113007  Downingia bacigalupii Lowell Ahart; John Dittes 2013-7-22 18875 Lassen Around 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
  RSA340002  Downingia bacigalupii Noel Holmgren, Patricia K. Holmgren 1980-7-3 9482 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  POM68179  Downingia bicornuta Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA28137  Downingia bicornuta Elmer I. Applegate 1929-6-24 5883 Lassen Pond just north of Beiber, NW corner of county. Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  UC803945  Downingia bicornuta var. bicornuta G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4005 Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  HSC69067  Downingia insignis Gary Schoolcraft 1980-7-16 317 Lassen N end of Nelson Corral Reservoir area. 1805 Comment
  JEPS97322  Downingia insignis Vernon H. Oswald and L. Ahart 1995-8-14 7184 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  JEPS24763  Downingia laeta John H. Weiler, L. Constance, E. Molseed 1960-6-13 60164 Lassen 1.7 mi. s. Ravendale (w. side of U.S. 395) 1615 Comment
  RSA530016  Downingia laeta D. W. Taylor, Clifton, Palmer, Buck 1988-6-6 9005 Lassen Big Valley; road from Bieber to Lookout, 0.5 miles south of the Modoc County Line. 1250 Comment
  CAS-BOT-BC41952  Draba albertina John Thomas Howell 1934-6-30 12132 Lassen Warner Mountains. Near Lost Lake. 2438 Comment
  SEINET10481008  Draba aurea John G. Lemmon Lemmon s.n. Lassen Lassen's peak in volcanic ashes, CA. Comment
  CHSC508  Draba verna J. Wakeman 1963-5-11 Lassen 6 mi. east of Bieber on hiway 299. Comment
  CHSC108018  Draba verna var. aestivalis Lowell Ahart; John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC99297  Draba verna var. verna Lowell Ahart; John Dittes 2008-6-20 14959 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
  CHSC69125  Drosera anglica Vernon Oswald; Beth Corbin, Gary Schoolcraft 1997-8-5 8812 Lassen North slope of Robbers Creek at Robbers Spring, so ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  HSC68048  Drosera anglica J. P. Smith, J. O. Sawyer 1973-8-9 7281 Lassen Blue Lake, Modoc National Forest. 1829 Comment
  CAS-BOT-BC157796  Drymocallis lactea var. lactea John Thomas Howell 1934-6-14 12156 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC76099  Elaeagnus angustifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8223 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3-1/2 miles (air) southeast of Standish. 1210 Comment
  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
  CHSC60896  Elatine californica Vernon H. Oswald; Lowell Ahart 1993-7-8 5646 Lassen Pittville Rd (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  HSC7304  Eleocharis acicularis Fred J. Kindel 1955-6-15 Lassen Mt. Meadows Reservoir, Westwood Comment
  UC1609483  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1993-6-28 5599 Lassen NE of Poison Lake (Rd 35N04 at Aspen Well, N of Hwy 44 on NW edge of Harvey Valley) 1725 Comment
  CAS-BOT-BC112846  Eleocharis macrostachya John Thomas Howell 1973-7-10 49805 Lassen Near Susanville on road to Janesville. 1295 Comment
  JEPS127217  Eleocharis palustris Lowell Ahart, John Dittes 2016-7-15 21215 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1142965  Eleocharis quinqueflora A. L. Hormay 1941-6-25 19 Lassen Burgess Spring Lassen National Forest 1676 Comment
  HSC95296  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC112467  Elymus caput-medusae Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18749 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC115611  Elymus cinereus Lowell Ahart; John Dittes 2015-7-14 20327 Lassen On the north side of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  HSC5270  Elymus cinereus M. T. Milligan 1964-8-6 197 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  SEINET12737887  Elymus cinereus M. Church 2016-7-26 14 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1412 Comment
  SEINET10521741  Elymus cinereus Paul Gallian, David B. Dunn 1971-6-2 Gallian 490 Lassen 5 mi. S. of Milford near Honey Lake on U.S. Hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - Jeffrey Pine on mountain range to west at approximately the same altitude. 1250 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  JEPS123452  Elymus elymoides Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -148 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  SEINET12745640  Elymus elymoides J. B. Davy 1897-1 D Lassen Honey Lake Valley, Long Valley. Comment
  UC1924248  Elymus elymoides Debra Valov 2004-6-9 2004264 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD61421  Elymus elymoides L. D. Whitney 1935-6-27 Lassen Squaw Valley. Comment
  CHSC6320  Elymus elymoides subsp. elymoides Nick Santamaria 1968-6-29 16 Lassen On the ELBS grounds. Comment
  UC1133007  Elymus elymoides subsp. elymoides H. P. Hagge 1929-9-11 23 Lassen Logan Mtn. Lassen National Forest, Eagle Lake Quadrangle Comment
  UC1136930  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC773976  Elymus elymoides subsp. elymoides L. R. Short and J. Warren 1936-6-29 S- 461 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1820 Comment
  JEPS126480  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-15 CA 350 -044 Lassen Throughout reservoir along right side of Horse Road when traveling North. Comment
  JEPS126496  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-12 CA 350 -74 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. 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-BC206735  Elymus glaucus subsp. glaucus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49446 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  RSA0105549  Elymus spicatus L. P. Janeway, B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  UC1024916  Elymus trachycaulus Leo Whitney 1935-6-29 3362 Lassen Bieber Comment
  UC1136823  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  GMDRC7737  Elymus triticoides J. M. Andre, G. Clifton 1993-6-1 33414 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  SEINET12758322  Elymus triticoides D. Snider 1942-8-30 s.n. Lassen Pine Creek Camp. 1524 Comment
  SEINET10561204  Elymus triticoides subsp. multiflorus Howell 1973-6-28 Howell 49522 Lassen Elysian Valley, west of Janesville. 1326 Comment
  CHSC32865  Ephedra viridis J. S. White 1980-4-14 124 Lassen 3 mi ne of Wendel. 1371 Comment
  HSC26173  Ephedra viridis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19306 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  NY70786  Ephedra viridis A. J. Cronquist 1959-6-17 8477 Lassen 6 miles northeast of Susanville 1828.8 Comment
  SEINET6628957 Image available Epilobium A. W. Harvilik 1967-1 4 Lassen jct. of 5.19 with road to Mutters Meadow 152 Comment
  CHSC113058  Epilobium brachycarpum Lowell Ahart; John Dittes 2013-7-22 18845 Lassen West margin of a duck field, about 10 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1122562  Epilobium brachycarpum A. Simontacchi 1940-6-13 852 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC773909  Epilobium brachycarpum L. R. Short and Wm. Gansberg 1936-8-11 S- 493 Lassen Burgess Spring Experiment Range Lassen National Forest 1746 Comment
  CHSC113081  Epilobium campestre Lowell Ahart; John Dittes 2013-7-22 18850 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
  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
  UC303060  Epilobium canum subsp. latifolium Pearl Safford 111 Lassen Susanville [uncertain locality] Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC113008  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes 2013-7-22 18856 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
  HSC95173  Epilobium ciliatum subsp. ciliatum Gordon Leppig, J. Cromwell 1997-7-27 617 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1191740  Epilobium ciliatum subsp. ciliatum Malcolm A. Nobs and S. Galen Smith 1949-8-20 1471 Lassen 1 mi s Milford (seepage area); Honey Lake Valley Comment
  UC1583966  Epilobium ciliatum subsp. ciliatum G. Schoolcraft 1990-8-14 2123 Lassen on Hwy 139 between M.P. 56 and M.P. 57 (s of Adin) 1432 Comment
  UC20216  Epilobium ciliatum subsp. ciliatum M. S. Baker and Frank Nutting 1894-7-25 Lassen Willow Creek Comment
  JEPS117486  Epilobium densiflorum Lowell Ahart, John Dittes 2010-7-31 16994 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
  UC1924202  Epilobium densiflorum Debra Valov 2005-8-20 2005223 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC59090  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5183 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Bottom of a cutbank of the creek where it enters the lake. 1853 Comment
  UC1924229  Epilobium hallianum Debra Valov 2005-8-19 2005218 Lassen Eagle Lake; Hwy 139, Mi. marker 25 1554 Comment
  CHSC59091  Epilobium hornemannii subsp. hornemannii Vernon H. Oswald; Lowell Ahart 1992-8-25 5184 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Along the bottom of a cutbank of a creek where it enters the lake. 1853 Comment
  CHSC60912  Epilobium pallidum Vernon H. Oswald; Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the bed of a vernal pool on the E side of the road. 1694 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
  RSA123008  Epilobium paniculatum L. R. Short, Wm. Gansberg 1936-8-11 S- 493 Lassen Lassen Forest, Burgess Spr. Exp. Range 1747 Comment
  CAS-BOT-BC56948  Equisetum arvense John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49463 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC66369  Equisetum laevigatum Vernon H. Oswald; Lowell Ahart 1996-6-17 7820 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  UC62615  Equisetum laevigatum Baker and Nutting 1894-7-5 Lassen <Dixay> Valley 1066 Comment
  RSA719899  Equisetum laevigatum Michael A. Vincent, K. Levings 2006-7-29 12905 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CAS-BOT-BC174094  Eremogone aculeata John Thomas Howell 1934-6-14 12160 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC4266  Eremogone congesta K. R. Stern 1967-6-24 2422 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  RSA0045087  Eremogone congesta Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CHSC60826  Eremogone congesta var. congesta Vernon H. Oswald; Lowell Ahart 1993-6-28 5582 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC89740  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8141 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
  NY1057004  Eremogone congesta var. simulans A. J. Cronquist 1959-6-17 8463 Lassen 50 miles southeast of Susanville Comment
  CHSC111269  Eremogone congesta var. subcongesta L. P. Janeway 2012-7-3 10941 Lassen Modoc Plateau. Near top of Shaffer Mountain, rocky outcrops, west-northwest facing and very rocky with lots of outcrops of hard dark volcanic rock. 2032 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
  RSA0057704  Eremogone congesta var. subcongesta Barbara Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  SJSU3559  Eremogone congesta var. subcongesta V. Hardham 1965-7-12 129 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139, Modoc National Forest 1463 Comment
  CAS-BOT-BC159996  Eremothera boothii subsp. alyssoides P. Monnet 1913-7-4 7951 Lassen Hot Springs Peak, S.E. of Lassen County 1800 Comment
  CHSC64793  Eremothera boothii subsp. alyssoides Vernon H. Oswald 1995-5-24 6765 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of the Amedee Mtns. 1249 Comment
  UC725471  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen on Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  UCD150407  Eremothera boothii subsp. alyssoides William Anderson 1963-6-2 s.n. Lassen Wendel. Comment
  UC23552  Eriastrum signatum M. S. Baker and Frank Nutting 1894-7-25 Lassen Eagle Lake 1524 Comment
  CDA39986  Eriastrum signatum T. C. Fuller 1980-8-6 20323 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  UC506538  Eriastrum wilcoxii J. Burtt Davy Jun 17 1897-Jun 24 1897 3408 Lassen Amedie Honey Lake Valley Comment
  JEPS69069  Eriastrum wilcoxii Walter Bryant July 1888 Lassen Comment
  CAS-BOT-BC298177  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  RSA518408  Ericameria nauseosa var. oreophila George K. Helmkamp 1990-9-23 A- 2 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  CAS-BOT-BC294181  Ericameria nauseosa var. speciosa R. E. Frenkel 1964-10-1 915 Lassen On California Hwy. 36, 1.0 mile east of California Hwy. 44, west of Susanville 1493 Comment
  CAS-BOT-BC294184  Ericameria nauseosa var. speciosa Louella Bass 1973-9-4 EV 133 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC299485  Ericameria nauseosa var. washoensis Gary Schoolcraft 1979-8-23 181 Lassen Just off Post Camp Road along road to Big Spring 1676 Comment
  CDA18270  Erigeron G. D. Barbe 1974-8-2 1935 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET10721387  Erigeron Paul Gallian, David B. Dunn 1971-6-2 Gallian 462 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET8079426 Image available Erigeron aphanactis var. aphanactis M. J. Williams 1974-7-29 74- 1 -49 Lassen 2 mi. west of Hallelujah Junction, south of Hwy 70 1494 Comment
  CAS-BOT-BC293524  Erigeron aphanactis var. aphanactis Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Ball's Canyon, south of Secret Valley Comment
  CHSC29923  Erigeron bloomeri Robin Ondricek 1978-6-6 35 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1584 Comment
  JEPS41560  Erigeron bloomeri Franklin P. Nutting Lassen Dixey Valley Comment
  JEPS80681  Erigeron bloomeri L. R. Heckard and T. I. Chuang 1981-6-10 5532 Lassen North Eagle Lake Campground Eagle Lake (nw corner of lake) 1524 Comment
  SEINET8082921 Image available Erigeron bloomeri S. Jesselson, M. Gray 2015-5-28 NV 030 -1065 Lassen Plumas allotment: Hwy 395 into CA, first meian crossing after check station, turn right, follow road right (S), take 2nd left, follow uphill road bearing SE until reach gray metal gate. 1727 Comment
  SEINET8513560 Image available Erigeron bloomeri A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1090 Lassen Constantia Allotment, West of Peterson's 1490 Comment
  CAS-BOT-BC294483  Erigeron bloomeri var. bloomeri L. P. Janeway 1990-7-4 3768 Lassen On knob ca 0.8 mi NE of Meadowview Peak 1981 Comment
  CAS-BOT-BC294488  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-7-8 12513 Lassen Harvey Valley Comment
  CHSC4947  Erigeron bloomeri var. bloomeri R. Carter 1967-6-23 545 Lassen Growing 10 yds off s side rd. Comment
  CHSC52763  Erigeron bloomeri var. bloomeri L. P. Janeway 1990-7-4 3768 Lassen On knob ca 0.8 mi NE of Meadowview Peak. 1981 Comment
  CHSC92714  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2005-7-10 8486 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  OBI76959  Erigeron bloomeri var. bloomeri Anthony Baniaga 2011-7-6 421 Lassen Lassen Natl Forest. Near intersection of 29N02Y and the "B" spur. Fredonyer Pass quad. T29N r10E sec 23 SW of SW 1640 Comment
  UC1118090  Erigeron bloomeri var. bloomeri A. Simontacchi 1940-6-12 848 Lassen 3.7 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1523793  Erigeron bloomeri var. bloomeri Gary Schoolcraft 1981-6-3 603 Lassen w of Susanville (near Cheney Creek); Cheney Creek 1463 Comment
  CAS-BOT-BC297144  Erigeron concinnus var. concinnus Ella Dales Cantelow 1940-5-31 3086 Lassen e. of Bieber 1219 Comment
  CAS-BOT-BC297189  Erigeron coulteri G. Schoolcraft 1994-7-6 2358 Lassen About 1 mile west of Boot Lake 2042 Comment
  CAS-BOT-BC296847  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-16 8340 Lassen Janesville Comment
  UC1924196  Erigeron divergens Debra Valov 2005-8-20 2005234 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 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
  UC1776680  Erigeron eatonii var. plantagineus G. Schoolcraft 1993-6-29 2313 Lassen Ash Valley RNA 16 miles E of Adin 1554 Comment
  CHSC112185  Erigeron elegantulus Dean Wm. Taylor 2012-6-7 21227 Lassen Modoc Plateau. Grass Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139. 1635 Comment
  CHSC80592  Erigeron filifolius var. filifolius Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10035 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  CHSC93249  Erigeron filifolius var. filifolius John Dittes; Scott Chamberlain 2004-6-28 1016 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
  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
  SBBG8113  Erigeron inornatus H. and M. Dearing 1938-7-1 2236 Lassen Susanville 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
  UC1136838  Erigeron inornatus var. inornatus L. R. Short and D. Gish 1936-8-3 S- 397 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1795 Comment
  UC584244  Erigeron lassenianus var. lassenianus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2264 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties) Comment
  JEPS41565  Erigeron linearis F. W. Peirson 1926-6-24 6855 Lassen Madeline Plain Comment
  CAS-BOT-BC295237  Erigeron lonchophyllus G. Schoolcraft 1999-6-29 2848 Lassen E. edge of Madeline Plains about 9 mi. ne of Ravendale 1615 Comment
  SD9017  Erigeron nivalis Mrs. R. M. Austin 1882-8-10 Lassen Lassen Peak Comment
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Apr 29 2013
  SJSU6631  Erigeron philadelphicus var. philadelphicus H. L. Buckalew 1961-7-9 Lassen spring by Blue Lake, Warner Mountains 1920 Comment
  RSA702451  Erigeron pumilus subsp. intermedius L. P. Janeway 2004-6-26 8163 Lassen High Cascade Range, alt peteeson Flat, Balcks Mtn Experimental Forest. 1767 Comment
  JEPS93827  Erigeron pumilus var. intermedius Vernon H. Oswald and Lowell Ahart 1998-6-4 9139 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  UC31450  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow Dixey Valley, Adobe meadow Comment
  UC76008  Erigeron pumilus var. intermedius Milo S. Baker 1890-1 Lassen Honey Lake Valley, near Milford; Honey lake Valley Comment
  CAS-BOT-BC300121  Erigeron pumilus var. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mi. southeast of Milford, Hwy 395, above Honey Lake 1280 Comment
  UCD18963  Erigeron pumilus var. intermedius R. E. Francis 1965-7-7 8 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 Comment
  CAS-BOT-BC300310  Erigeron tener G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2285 Lassen Summit Thompson Peak, south of Janesville 2330 Comment
  UC584286  Erigeron tener G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2285 Lassen summit Thompson Peak (s of Janesville) 2346 Comment
  UCD99771  Eriogonum baileyi Margaret Williams; Steven Williams 1974-7-26 74- 4 - Lassen near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 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
  JEPS25524  Eriogonum collinum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7136 Lassen sandy playa 1/4 mi beside US 395 road to Smoke Creek 1341 Comment
  NY242506  Eriogonum collinum A. J. Cronquist 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  NY242507  Eriogonum collinum R. F. Hoover 1940-9-29 4645 Lassen Between Shaffer Mountain and Warren Peak, in low pass. Comment
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Jul 1 2013
  RSA238630  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along Hwy 395, 4.5 miles south of Ravendale Comment
  UC1395152  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen 4.5 mi s, along U.S. Highway 395 Ravendale Comment
  POM105623  Eriogonum elatum var. elatum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CDA22621  Eriogonum microthecum var. ambiguum L. Ahart 2003-8-17 10518 Lassen About 100 yards west of the cattle guard, on the southeast side of Smoke Creek Ranch Road, about 8 - 9 miles (air) northeast of Highway 395, about 30 miles (air) northeast of Susanville. Comment
  CAS-BOT-BC268689  Eriogonum microthecum var. laxiflorum Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  CAS-BOT-BC268690  Eriogonum microthecum var. laxiflorum Clare B. Hardham 1971-8-22 18365 Lassen Diamond Mountain 2346 Comment
  NY803458  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-26 2946 Lassen Slopes west of The Mark Store 6 miles southeast of Milford, CA - nw1/4 1320 Comment
  SEINET245664  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mi west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  CAS-BOT-BC266368  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49514 Lassen West of Janesville, Elysian Valley, Sierra Nevada 1325 Comment
  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
  SD13333  Eriogonum nudum var. nudum R. V. Chamberlain 1935-9-8 6584 Lassen Guernsey Creek 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
  UC77673  Eriogonum nudum var. scapigerum T. S. Brandegee 1892-6-27 Lassen Milford Comment
  SBBG65173  Eriogonum ovalifolium S. W. Hutchinson -Jun-1925 Lassen Eagle Lake to Caribou Lake 1828 Comment
  RSA0020051  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen National Forest. NW of intersection of 29N02Y and the ''B'' spur. 1630 Comment
  CAS-BOT-BC272625  Eriogonum spergulinum var. reddingianum John Thomas Howell 1934-6-14 12123 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  RSA713122  Eriogonum spergulinum var. reddingianum L. P. Janeway, B. Castro 2005-7-10 8483 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 and 28N02) and Road 28N01. 1859 Comment
  NY283103  Eriogonum sphaerocephalum G. Schoolcraft 1982-6-28 737 Lassen Fort Sage Mountains 1706.9 Comment
  POM105202  Eriogonum sphaerocephalum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 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
  JEPS94611  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald and Lowell Ahart 1997-5-27 8491 Lassen e side of Hwy 139 at small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  RSA31953  Eriogonum sphaerocephalum var. halimioides A. A. Heller 1938-6-23 15214 Lassen south of Secret Valley on U.S. Highway #395. 1372 Comment
  RSA700235  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7200 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  UC1226260  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 mi s Adin Comment
  CAS-BOT-BC262737  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Janesville on Highway 395 Comment
  CAS-BOT-BC262740  Eriogonum sphaerocephalum var. sphaerocephalum Brandegee 1892-6-30 s.n. Lassen Susanville Comment
  CHSC25087  Eriogonum sphaerocephalum var. sphaerocephalum K. R. Stern 1967-7-1 2456 Lassen Ca. 16 mi. NE of Susanville. State Hwy 139. Comment
  NY283149  Eriogonum sphaerocephalum var. sphaerocephalum N. H. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km. (11.5 miles) airline distance east-southeast of Ravendale 1830 Comment
  CAS-BOT-BC262743  Eriogonum strictum var. anserinum Ralph K. Gierisch 1968-7-11 3347 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  UC1249283  Eriogonum strictum var. anserinum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8473 Lassen 50 mi se Susanville 1371 Comment
  CAS-BOT-BC267889  Eriogonum umbellatum Hans Leschke 1964-9-3 1892 Lassen Cinder Cone, Lassen Volcanic National Park Comment
  CAS-BOT-BC267890  Eriogonum umbellatum A. A. Heller 1938-6-23 15202 Lassen West of Susanville Comment
  CAS-BOT-BC267893  Eriogonum umbellatum H. D. Ripley; R. C. Barneby 1943-6-13 5413 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC267898  Eriogonum umbellatum John Thomas Howell 1934-7-6 12436 Lassen Harvey Valley Comment
  HSC63828  Eriogonum umbellatum Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  CAS-BOT-BC267815  Eriogonum umbellatum var. covillei G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mtn. 2316 Comment
  GMDRC6954  Eriogonum umbellatum var. modocense J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31429 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  CAS-BOT-BC265092  Eriogonum umbellatum var. nevadense John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50673 Lassen Summit ridge of Diamond Mt., Sierra Nevada 2346 Comment
  POM253245  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Grassy, gravelly slope between Secret Valley and Ravendale. 1524 Comment
  SEINET10479566  Eriogonum umbellatum var. nevadense Taylor 1982-8-27 Taylor 5056 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  POM253240  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15202 Lassen Ocasional on on pen gravelly slope denuded of timber west of Susanville. Comment
  POM253241  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15190 Lassen 3 mi. east of Westwood. Comment
  NY399609  Eriogonum vimineum J. L. Reveal 1971-6-22 2464 Lassen Along U.S. Highway 395, 4.5 miles south of Ravendale Comment
  NY399826  Eriogonum vimineum G. Schoolcraft 1982-8-18 889 Lassen Along Doyle Grade road west of Doyle Creek 1585.0 Comment
  POM195124  Eriogonum vimineum D. D. Keck 1930-7-23 951 Lassen Susanville. 1280 Comment
  RSA252387  Eriogonum vimineum Robert F. Thorne, C. W. Tilforth 1969-9-6 39260 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  UC1258486  Eriogonum vimineum G. Schoolcraft 1979-6-19 78 B Lassen Painter's Flat 1719 Comment
  UC1587101  Eriogonum vimineum G. Schoolcraft 1991-7-31 2202 Lassen along Karlo Road about 1/2 mi e Hwy. 395 1356 Comment
  SDSU7202  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2.0 Miles north of Janesville. 1219 Comment
  CHSC12492  Eriophyllum lanatum Carol Weld 1969-6-20 9 Lassen Dean's Meadow. 1950 Comment
  SEINET10672052  Eriophyllum lanatum Paul Gallian, David B. Dunn 1971-6-2 Gallian 517 Lassen 6 mi. N of Hallelujah Jct., on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UC725390  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen e slope of Freydonyer Pass (on State Highway #36); State Highway #36, Freydonyer Pass 1645 Comment
  UC1249275  Eriophyllum lanatum var. achilleoides Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8469 Lassen 50 mi se Susanville Comment
  OBI75879  Eriophyllum lanatum var. croceum Anthony Baniaga 2011-6-29 402 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW 1500 Comment
  CHSC59683  Eriophyllum lanatum var. integrifolium Mary Meyer 1980-5-7 Lassen Mesa between Pete's Creek. 1447 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
  SEINET3132728  Eriophyllum lanatum var. integrifolium J. L. Strother 1970-5-23 956 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  JEPS107866  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
  UC1087822  Eryngium alismifolium Ornduff 1958-7-22 5012 Lassen 4.5 mi S of Ravendale (next to Highway 395) Comment
  UC1088542  Eryngium alismifolium Ornduff 1958-7-22 5014 Lassen 6.6 mi. n. Ravendale (along Hwy. 395) Comment
  UC1487304  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UC1487306  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 550 Lassen U.C. Botanical Garden; ; alongside State Highway 395, 4.1 miles NNW of Termo, Madeline Plains Comment
  UCD18971  Eryngium alismifolium Raymond D. Ratliff 1965-8-4 39 Lassen Lassen National Forest, Harvey Valley Allotment (HV 78-73). 1706 Comment
  UC21011  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3382 Lassen Honey Lake Valley Comment
  CDA38323  Eryngium articulatum M. Pryor, E. E. Fix 1961-8-9 s.n. Lassen 1 mile north of Bieber. 0 Comment
  CAS-BOT-BC55194  Erysimum repandum Gary Schoolcraft 1982-5-20 668 Lassen Along Shaffer Mountain Road near Highway 395. 1386 Comment
  CHSC7752  Erythranthe guttata Beverley J. Wise 1969-5-18 107 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  CHSC5909  Erythranthe primuloides J. B. Kimsey 1946-6-20 Lassen Grasshopper Valley. 1615 Comment
  RSA234813  Erythranthe pulsiferae Francis W. Pennell 1940-6-10 25781 Lassen Northeast of West wood. 1646 Comment
  CHSC54358  Erythranthe rubella Richard Snow 1991-5-5 22 Lassen East of Susanville. Comment
  RSA445591  Eschscholzia californica J. D. Detzer, M. Sacks 1977-7-28 35 Lassen 0.5 km S of Hwy 395, 4 miles W of Milford. 1386 Comment
  RSA59555  Eschscholzia californica E. K. Balls 1950-5-22 14828 Lassen 1 mile S of Milford, Hwy 395. 1280 Comment
  JEPS127177  Eschscholzia californica subsp. californica Lowell Ahart, John Dittes 2016-7-15 21228 Lassen 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
  CHSC54180  Euclidium syriacum Vernon H. Oswald 1991-5-28 4616 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the east side of the barn. 1264 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  CAS-BOT-BC312103  Eurybia integrifolia B. Bartholomew; B. Anderson 1988-7-22 4502 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  UCD98885  Fallopia convolvulus R. N. Raynor 1938-7-16 s.n. Lassen Clark Dairy Ranch, 3 mi. SE Susanville. Comment
  CAS-BOT-BC278428  Festuca idahoensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC278437  Festuca idahoensis John Thomas Howell 1934-7-6 12430 Lassen Hall's Flat Comment
  CHSC42184  Festuca idahoensis C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. 2194 Comment
  JEPS127716  Festuca idahoensis Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -171 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  UC1609256  Festuca idahoensis Vernon H. Oswald and Lowell Ahart 1993-7-8 5664 Lassen 1.9 mi n Hwy. 44 (Pittville Rd (Lassen 111, 36N01), between the road and railroad, on se edge of Poison Lake); Poison Lake 1709 Comment
  UCR244064  Festuca microstachys Jim Andre, G. L. Clifton 1993-6-9 19690 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC278932  Festuca rubra John Thomas Howell 1934-7-6 12458 Lassen Harvey Valley Comment
  JEPS28300  Festuca rubra George W. Gillett 1957-7-28 923 Lassen upper end Butte Lake (trail to Widow Lake above junction w/ Snag Lake trail, dry wash 100 yds. above trail junction); Lassen Volcanic Nat'l Park, Butte Lake 1859 Comment
  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
  CAS-BOT-BC506181  Fritillaria pudica Louella Bass 1974-3-26 EV 141 Lassen Sierra Nevada, Elysian Valley 1325 Comment
  CHSC25058  Galium aparine L. B. Barlow 1967-6-23 20 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC36475  Galium aparine Margaret E. Holloran 1982-6-6 14 Lassen N of Eagle Lake Field Station on a point directly E of Pelican Pt. Comment
  UC773941  Galium aparine L. R. Short and Wm. Gansberg 1936-6-2 S- 367 Lassen Burgess Spring Experimental Range Lassen National Forest 1850 Comment
  HSC68928  Galium multiflorum Gary Schoolcraft 1980-5-30 245 Lassen Bird Canyon, SW of Herlong 1433 Comment
  CHSC23503  Gayophytum Wayne O. Baum 1971-7-12 71 -75 Lassen S. slope of Gallatin Peak. 2042 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
  CHSC36176  Gayophytum diffusum Jerry Snodgrass 1978-6-28 1 Lassen Lower Dry Lakes e of Eagle Lake. 1645 Comment
  UC1122620  Gayophytum diffusum subsp. parviflorum A. Simontacchi 1940-5-28 779 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC25090  Gayophytum heterozygum K. R. Stern 1967-7-1 2442 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  CHSC27713  Gayophytum heterozygum Robert A. Schlising 1978-7-21 3318 Lassen E side of Eagle L., near Eagle Lake Field Station. 1578 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
  CHSC93686  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
  POM203958  Gayophytum racemosum J. T. Howell 1934-7-7 12473 Lassen Harvey Valley. Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 Comment
  UC107796  Gayophytum racemosum T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UC1714624  Gayophytum ramosissimum Franklin P. Nutting 1894-7-5 Lassen Dixey Valley Comment
  UCD55160  Gayophytum ramosissimum Ellen Dean 2006-5-15 3048 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  SEINET3287483 Image available Gayophytum ramosissimum Marcus E. Jones 1897-6-18 Lassen Chats. 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
  JEPS31405  Gentiana newberryi G. S. Crew and C. S. Robinson 1927-7-15 68 Lassen Bogard Ranger Station, sw Lassen Co. Lassen Forest 1737 Comment
  UC405455  Gentiana newberryi Mrs. R. M. Austin 1879-1 Lassen Mountain Meadows Comment
  HSC8435  Gentiana newberryi Fred J. Kindel 1955-8-1 Lassen Mt. Meadows Reservoir Comment
  JEPS94471  Geum triflorum Vernon H. Oswald and Lowell Ahart 1997-5-27 8504 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling the road); Forest Route 38N04 1546 Comment
  UC773877  Geum triflorum L. R. Short, J. Warren 1936-6-23 S 423 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1764 Comment
  CHSC1549  Geum triflorum var. ciliatum 1944-7-5 Lassen Champ's Flat west of Eagle Lake. 1584 Comment
  CHSC6253  Geum triflorum var. ciliatum J. B. Kimsey 1946-6-25 Lassen Eagle Lake. Prison Springs, McCoy Flat. 1676 Comment
  RSA0086587  Gilia Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  UCR201713  Gilia Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  JEPS17737  Gilia leptomeria Rimo Bacigalupi with G. T. Robbins 1955-7-21 5422 Lassen 17.5 mi e U.S. 395 (1.3 mi w of Nevada State line, s of Smoke Creek Ranch Road, Rush Creek); Rush Creek, s of Smoke Creek Ranch Road 1353 Comment
  CHSC11771  Gilia modocensis Wayne O. Baum 1971-6-28 71 -4 Lassen S. slope of Gallatin Peak. 2042 Comment
  NY1011680  Gilia polycladon G. Schoolcraft 1982-4-29 638 Lassen Amedee Canyon 1372 Comment
  JEPS69702  Gilia sinuata J. W. Blankinship 1911-11-29 Lassen Red Rock Comment
  UC128865  Gilia sinuata P. B. Kennedy 1901-6-10 Lassen R.R. Sta Constantia Comment
  CAS-BOT-BC280598  Glyceria elata John Thomas Howell; Gordon H. True 1973-7-31 50046 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UC1776715  Glyceria elata G. Schoolcraft 1994-7-6 2354 Lassen About 2 miles west of Boot Lake 2072 Comment
  CAS-BOT-BC302595  Gnaphalium palustre John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49494 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1483835  Gnaphalium palustre G. Schoolcraft 1980-7-22 Lassen nw of BLM fire station (along Hwy 395) 1630 Comment
  UC1536868  Gnaphalium palustre G. H. True Jr. 1938-7-14 956 Lassen near Janesville 1280 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
  JEPS124631 Image available Grindelia nana Virginia Hardham 1965-7-13 132 Lassen Along roadside 1.4 mi past junction of As and 299. Comment
  UCD132463  Grindelia nana Dan Marcum 1978-7-3 s.n. Lassen exact location unknown. 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
  CAS-BOT-BC388467  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  UC1220391  Gypsophila paniculata var. paniculata T. C. Fuller 1963-7-16 11013 Lassen Janesville; hillslope n of cemetary Comment
  SBBG63470  Hackelia velutina E. Rockwell -Jun-1925 53 Lassen Eagle Lake 1554 Comment
  UCD98887  Halogeton glomeratus Les Berry; J. L. Myler 1954-8-17 s.n. Lassen Karlo. Comment
  UC1553381  Helianthella californica subsp. nevadensis G. Schoolcraft 1988-7-11 1822 Lassen about 1 mi s Hwy. 44 (on road to Goumaz) 1645 Comment
  CHSC43613  Helianthus annuus Vernon Oswald 1986-8-7 2274 Lassen Hwy 36, 15.7 mi e of the Lassen-Plumas County line, 1.7 mi sw of the Susan River. Roadside. 1447 Comment
  CAS-BOT-BC305410  Helianthus annuus Verne Grant; Irving Schneider 1947-7-31 8215 Lassen Northeast quarter of George Williams section 19, Madeline Plain Comment
  JEPS94088  Helianthus bolanderi Vernon H. Oswald and Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at R.R. overpass on e. side of Nubieber 1255 Comment
  CAS-BOT-BC305662  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  POM253276  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  UC1483881  Helianthus cusickii G. Schoolcraft 1979-6-19 71 Lassen South of Big Spring 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
  SD64346  Helianthus nuttallii Darley F. Howe 1966-8-26 4303 Lassen Modoc-Lassen County Line, east of Warner Mountains. 1340 Comment
  UC1483827  Heliotropium curassavicum G. Schoolcraft 1980-7-10 303 Lassen e. shore Eagle Lake 1554 Comment
  UCD73908  Heliotropium curassavicum var. oculatum Rebecca Epanchin-Niell 2001-6-14 44 Lassen Jay Dow, Sr. Wetlands (owned by University of Nevada, Reno) on the south side of Honey Lake. Comment
  CHSC91196  Hemizonella minima Lowell Ahart; John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  JEPS107809  Hemizonella minima Lowell Ahart, John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  SEINET11197274 Image available Hemizonella minima G. Schoolcraft 1997-6-26 2601 Lassen W of Hwy 395 between Janesville and Milford 1676 Comment
  UC1137704  Hemizonella minima A. Simontacchi 1940-5-28 788 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC174811  Hemizonella minima T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC1776663  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  UC1178997  Hesperochiron californicus Herbert L. Mason 1949-4-16 13992 Lassen 2 mi. s. Standish Comment
  RSA122623  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley. Lassen Forest. 1707 Comment
  JEPS1670  Hesperochiron pumilus G. S. Crew and C. S. Robinson 1927-6-10 11 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 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
  JEPS97309  Hesperolinon micranthum Vernon H. Oswald and L. Ahart 1995-7-5 6957 Lassen T30N R16E NW1/4 NW1/4 Sec. 7, 4540 ft, Modoc Plateau, Sagebrush Scrub. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395 1383 Comment
  UC1094379  Hesperolinon micranthum R. C. Bacigalupi with S. Galen Smith 1957-6-28 5995 Lassen 6.0 mi n Madeline (on Highway 395) 1676 Comment
  UC17262  Hesperolinon micranthum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. 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
  JEPS96087  Heterocodon rariflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7859 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd, w side Papoose Meadows, ca 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1562324  Heterotheca villosa var. minor Vernon Oswald and Lowell Ahart 1990-7-25 4397 Lassen 2.2 mi w Hwy 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  NY783473  Heuchera rubescens B. J. Ertter 1987-6-16 7201 Lassen Skeedaddle Mountains on northeast side of Honey Lake; between Hot Springs Peak and VABM 2255.5 Comment
  NY783478  Heuchera rubescens G. Schoolcraft 1982-6-23 728 Lassen Fort Sage Mountains 1828.8 Comment
  CAS-BOT-BC312419  Hieracium albiflorum John Thomas Howell; Gordon H. True 1973-7-31 50025 Lassen Road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  CAS-BOT-BC312420  Hieracium albiflorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49448 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  UC135018  Hieracium albiflorum T. S. Brandegee 1892-7-2 s. n. Lassen Susanville Comment
  CHSC98320  Hieracium greenei B. Castro; L. P. Janeway 2005-7-10 1505 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  JEPS88432  Hieracium greenei Vernon H. Oswald and Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi nnw Dyer Mtn. Lookout (ssw of Westwood) 2011 Comment
  CAS-BOT-BC318713  Hieracium horridum Wm. Bridge Cooke 1938-9-17 11703 Lassen Canyon below Horse Camp, Mount Shasta 2133 Comment
  UC485536  Hieracium horridum Franklin P. Nutting 1984-7-30 Lassen Silver Lake Silver Lake Comment
  UC897899  Hieracium nudicaule A. A. Heller 1938-7-28 15301 Lassen about a mi e Westwood (edge of s swamp) 1524 Comment
  CHSC66720  Hieracium scouleri var. nudicaule Vernon H. Oswald; Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road. 2011 Comment
  UC1191967  Hippuris vulgaris Malcolm A. Nobs and S. Galen Smith 1949-8-20 1471 a Lassen 1 mi. s. Milford (Honey Lake Valley); Honey Lake Valley Comment
  RSA747548  Holodiscus microphyllus var. glabrescens K. M. Meyer, A. Townesmith 2007-7-23 150 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  POM91032  Holodiscus microphyllus var. glabrescens Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC107997  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2011-6-20 17482 Lassen On the east bank of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC99281  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA755003  Holosteum umbellatum subsp. umbellatum L. Ahart, John Dittes 2008-6-20 14922 Lassen About 10-100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber. 1264 Comment
  OBI77055  Hordeum brachyantherum Anthony Baniaga 2011-8-4 487 Lassen Lassen NF. About 1/2 mi WNW of Griffith Hill along 30n21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  UC506970  Hordeum brachyantherum subsp. brachyantherum George A. Fischer and Irwin H. Johnson 1933-7-12 F 232 Lassen Patterson Flat 1737 Comment
  CHSC25162  Hordeum jubatum L. E. Ray 1967-6-25 54 Lassen Ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  UCD85868  Hordeum marinum subsp. gussoneanum John Thomas Howell 1974-7-10 50533 a Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC60848  Horkelia fusca subsp. tenella Vernon H. Oswald; Lowell Ahart 1993-6-28 5577 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  JEPS87433  Horkelia fusca subsp. tenella Vernon H. Oswald and Lowell Ahart 1993-6-28 5577 Lassen 0.2 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley, e of Poison Lake); e of Poison Lake, e side of Grays Valley 1749 Comment
  RSA14933  Horkelia fusca subsp. tenella J. T. Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  UC1609471  Horkelia fusca subsp. tenella Vernon H. Oswald and Lowell Ahart 1993-6-28 5577 Lassen 0.2 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley, e of Poison Lake); e of Poison Lake, e side of Grays Valley 1749 Comment
  HSC25727  Horkelia fusca var. tenella D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19181 Lassen Harvey Valley near Cone Springs Comment
  SBBG2949  Horkelia fusca var. tenella H. and M. Dearing 1938-6-30 2229 Lassen N of Susanville [Hwy 44] Comment
  SEINET183889  Hydrophyllum capitatum var. alpinum L. Constance 1938-7-10 2325 Lassen 0.5 miles W of Fredonyer Pass. 1676 Comment
  CHSC118790  Hymenoxys cooperi L. P. Janeway; B. Castro 2015-6-5 11756 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
  SJSU8059  Hypericum anagalloides J. W. Tilden 1960-6-27 1523 Lassen 5 mi E of Westwood via Moonlight Rd 1524 Comment
  CAS-BOT-BC401309  Hypericum scouleri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49436 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC52812  Iliamna bakeri G. Schoolcraft 1981-7-29 552 Lassen On rocky slopes of McDonald Peak near top. 2377 Comment
  NY52524  Iliamna bakeri G. Schoolcraft 1983-8-22 1142 Lassen Along Ash Valley Rd. west of Madeline 1737.4 Comment
  HSC17038  Ipomopsis aggregata Fred J. Kindel 1955-6-28 Lassen Susan River Comment
  HSC69077  Ipomopsis aggregata Gary Schoolcraft 1979-7-12 145 Lassen NW side of Shinu Peaks 2134 Comment
  CHSC68895  Ipomopsis congesta subsp. montana Vernon Oswald; Lowell Ahart 1997-6-24 8637 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
  CHSC111244  Iris missouriensis B. Castro; L. P. Janeway 2012-7-2 1936 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Moun-tains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1604 Comment
  CHSC4265  Iris missouriensis K. R. Stern 1967-6-24 2425 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  JEPS17345  Iris missouriensis W. L. Jepson 1918-8-4 7811 Lassen Horse Lake 1554 Comment
  RSA0025413  Isoetes nuttallii Forrest Freund 2013-5-23 194 Lassen HWY 44. Near pond on the south west side of the road, in open patches. 1716 Comment
  CHSC77255  Isolepis G. Schoolcraft 1997-8-4 2675 Lassen W of Willow Creek Valley. 1554 Comment
  UC1037332  Iva axillaris subsp. robustior Leo Whitney 1934-9-5 1958 Lassen Fredonyer Pass; Lassen National Park 1676 Comment
  UC1537066  Iva axillaris subsp. robustior Gordon H. True Jr. 1936-6-21 517 Lassen se of Litchfield; Honey Lake Valley 1219 Comment
  NY833699  Ivesia baileyi G. Schoolcraft s.n. Lassen In Wendel Canyon 1585 Comment
  JEPS94475  Ivesia paniculata Vernon H. Oswald and Lowell Ahart 1997-5-27 8494 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on n side of a creek paralleling the road); Forest Route 38N04 1546 Comment
  UC1100949  Juncus balticus Verne Grant and Irving Schneider 1947-7-31 8211 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1587074  Juncus balticus G. Schoolcraft 1991-7-31 2204 Lassen Cottonwood Spring Shinn Mtn. 2042 Comment
  UCR244138  Juncus balticus Jim Andre, G. L. Clifton 1993-6-9 19700 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  SEINET7421696 Image available Juncus balticus A. L. Hormay 1941-1 25441 Lassen Sec. 31, T 33N, R 9 E, Little Harvey Valley. Altitude 5500 ft. 2007 Comment
  UC1142944  Juncus balticus subsp. ater A. L. Hormay 1941-6-18 4 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  HSC23084  Juncus balticus subsp. ater John Pratt 1970-1 14 Lassen Comment
  CHSC99280  Juncus bufonius var. congestus Lowell Ahart; John Dittes 2008-6-20 14958 Lassen In meadow, around a new pond, 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
  JEPS107804  Juncus bufonius var. occidentalis Lowell Ahart, John Dittes 2005-6-2 11958 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  CHSC60788  Juncus hemiendytus var. hemiendytus Vernon H. Oswald; Lowell Ahart 1993-6-3 5483 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.4 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. 1728 Comment
  UC1608994  Juncus hemiendytus var. hemiendytus Vernon H. Oswald and Lowell Ahart 1993-6-3 5483 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y), 2.4 mi n of its jct with Lassen 21 (32N02) to Eagle Lake (on w edge of Pine Creek Valley, between Poison Lake and Susanville); Pine Creek Valley 1728 Comment
  RSA201267  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  CHSC114407  Juncus laccatus Don Lepley 2014-6-17 Lassen Lassen National Forest; Eagle Lake Ranger District. Location uncertain; near one of the forks of Baxter Cfreek, probably the northernmost one, along either Road 29N07 or downslope at the A-spur. SE1/4 of NE1/4 of Sec 5 of SW1/4 of NW1/4 of Sec 4. 1767 Comment
  POM110628  Juncus macrandrus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1100950  Juncus mexicanus Verne Grant and Irving Schneider 1947-7-30 8191 Lassen s point of w embayment Tule Lake Comment
  CHSC5268  Juncus nevadensis 1944-7-26 Lassen Eagle Lake. Juniper Lake. 2055 Comment
  CHSC96731  Juncus nevadensis Gordon Leppig 1998-7-12 946 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow a complex. 1970 Comment
  JEPS87450  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  RSA647524  Juncus nevadensis Marion P. Harthill 1974-6-14 1518 Lassen Madeline. 152 Comment
  UC1133725  Juncus sphaerocarpus A. Simontacchi 1940-6-5 815 A Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC1133737  Juncus tiehmii A. Simontacchi 1940-6-5 815 Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  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
  CHSC92739  Juncus trilocularis L. P. Janeway 2005-7-3 8456 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  RSA0035254  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, Cascade Range Highlands. 1730 Comment
  UCD168847  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley. 1740 Comment
  CHSC117193  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 20990 Lassen 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS126564  Juniperus occidentalis Lowell Ahart, John Dittes 2016-6-7 20974 Lassen About 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC1134311  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ene Chats; Sierraville Quad. 1569 Comment
  UC773866  Juniperus occidentalis L. R. Short 1936-9-30 S- 508 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1828 Comment
  UCD133775  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen 5 miles from Susanville; dry hills on Gold Run Creek. 1310 Comment
  SEINET5334961  Juniperus occidentalis J. Vetter 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  SEINET10932817  Juniperus occidentalis subsp. australis Mary Susan Taylor 1982-5-29 Taylor 4570 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  SEINET3865186 Image available Juniperus osteosperma Noel H. Holmgren, Patricia K. Holmgren 1970-7-28 4625 Lassen North end of Peterson Mountain, near US 395, 8 miles north of Halleluja Junction (junction with Calif. 70).; 0 1524 Comment
  CAS-BOT-BC180806  Kochia scoparia John Thomas Howell 1974-7-8 50509 Lassen Susanville - Sierra Nevada 1295 Comment
  RSA702594  Koeleria macrantha L. P. Janeway 2004-6-26 8149 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UCD85786  Koeleria macrantha Beecher Crampton 1960-6-18 5727 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  CHSC59078  Lactuca serriola Vernon H. Oswald; Lowell Ahart 1992-8-25 5190 Lassen Lassen Volcanic National Park. West shore of Snag Lake near the islands. 1851 Comment
  CHSC5214  Lactuca tatarica subsp. pulchella 1944-8-11 Lassen Eagle Lake. 1584 Comment
  CHSC71383  Lactuca tatarica subsp. pulchella Vernon H. Oswald; B. Corbin, G. Schoolcraft 1998-7-13 9256 Lassen Hwy. 139 along the east shore of Eagle Lake. Roadside. 1560 Comment
  CAS-BOT-BC341487  Lagophylla ramosissima John Thomas Howell 1973-8-1 50156 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  JEPS127275  Lagophylla ramosissima Lowell Ahart, John Dittes 2016-7-13 21109 Lassen 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. Comment
  UC33057  Lagophylla ramosissima M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CDA20367  Layia glandulosa D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC60718  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  CHSC64757  Layia glandulosa Vernon H. Oswald 1995-5-31 6817 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC7632  Layia glandulosa Beverley J. Wise 1969-5-3 25 Lassen 4.3 mi. east on Las. Co. Rd. 338 beyond junction with Hwy 395. 1554 Comment
  JEPS94780  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1998-6-4 9143 Lassen s of Constantia (spur road on n side of Red Rock Road o.6 mi e of Highway) 1389 Comment
  UC468843  Layia glandulosa Franklin P. Nutting Lassen Dixey Valley Comment
  CHSC4847  Lemna minor R. Carter 1967-7-13 590 Lassen Along shore of Willow Creek. Comment
  CHSC99242  Lemna minuta Lowell Ahart; John Dittes 2008-6-22 15022 Lassen On shallow water, south side of the levee, about 50 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
  HSC95178  Lemna minuta Gordon Leppig 1998-7-12 935 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95338  Lemna minuta Gordon Leppig, J. Cromwell 1997-7-27 621 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  SD117142  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek, at bridge on Highway 139, approximately10 miles north of Susanville. 1509 Comment
  CHSC75476  Lepidium chalepense Vernon H. Oswald; Lowell Ahart 1999-6-9 9749 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: on the dam of the reservoir. 1353 Comment
  UC10677  Lepidium dictyotum var. acutidens M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  CAS-BOT-BC89718  Lepidium latifolium John Thomas Howell 1975-7-23 51413 Lassen Sierra Nevada. On Highway 395 between Johnstonville and Janesville. 1280 Comment
  UCD115696  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen 75 sq. ft. infestation on east side of road, Hwy 395 to Litchfield, 4.7 miles south of Ravendale, Madelaine Plains. 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
  CHSC36444  Lepidium perfoliatum Jeffrey R. Peek 1982-6-1 22 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd. Ca. 10 yd e of Ravendale Rd. 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
  JEPS95731  Lepidium perfoliatum Vernon H. Oswald and L. Ahart 1995-6-19 6899 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  OBI48159  Lepidium perfoliatum Rhonda Riggins 1989-4-27 1642 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  JEPS53770  Lepidium virginicum var. virginicum W. L. Jepson 1918-8-2 7763 Lassen Beckwith Pass 1463 Comment
  UC1123943  Leptodactylon pungens E. Sawyer 1935-6-27 230 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  UC572594  Leptodactylon pungens E. Sawyer 1935-6-27 230 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  CHSC99130  Leptosiphon bolanderi Lowell Ahart; John Dittes 2008-6-19 14892 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
  CHSC27644  Leptosiphon ciliatus Jerry Snodgrass 1978-7-10 46 Lassen Colman L., DE of Eagle L. 1962 Comment
  CHSC92716  Leptosiphon ciliatus L. P. Janeway; B. Castro 2005-7-10 8480 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  CHSC13629  Leptosiphon harknessii M. S. Taylor 1974-6-25 290 Lassen Vernal pool ca. 4 ft s of road, ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville. 1524 Comment
  RSA702599  Leptosiphon harknessii L. P. Janeway 2004-7-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  CHSC59839  Leucocrinum montanum Mary Meyer 1980-5-6 Lassen Left side of Hwy 395, along barbed-wire fence, 1/4 mi from old gas station. 1615 Comment
  JEPS87460  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  JEPS94470  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1997-5-27 8509 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, on small creek paralleling road on north); Forest Route 38N04 1560 Comment
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  HSC38587  Leucocrinum montanum J. P. Smith, J. O. Sawyer 1971-5-23 Lassen 3 mi. N of junction of Hwy. 139 and turnoff to Thermo Comment
  CHSC36446  Lewisia rediviva Jeffrey R. Peek 1982-6-1 23 Lassen Ca 2 mi e of Horse Lake. 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
  UC803946  Leymus G. L. Stebbins Jr., P. Dansereau, K. Narayan, and C. McMillan 1949-8-6 4006 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  JEPS87470  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  CAS-BOT-BC274465  Leymus triticoides Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  UC1131756  Leymus triticoides A. Simontacchi 1940-8-30 912 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD86642  Leymus triticoides J. Earl Coke 1931-6-1 s.n. Lassen Lassen County. 1524 Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  CAS-BOT-BC246146  Limosella aquatica Malcom A. Nobs; S. Galen Smith 1949-7-20 1046 Lassen Bieber, along Highway 299 Comment
  CHSC113012  Limosella aquatica Lowell Ahart; John Dittes 2013-7-23 18889 Lassen Around a man made pond, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29863  Limosella aquatica Robin L. Ondricek 1978-8-9 124 Lassen At the ne edge of Mahogany Lake. 2057 Comment
  JEPS3468  Limosella aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3354 Lassen Honey Lake Valley; Adobe meadows Comment
  UCR228120  Limosella aquatica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47205 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
  RSA0037003  Linanthus bolanderi Lowell A. Ahart, John Dittes 2008-6-19 14892 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
  UC52823  Linanthus bolanderi M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. 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
  UC1184062  Linanthus ciliatus Jean Langenheim 1957-6-26 4400 Lassen nw Said Valley, from areas adjacent ot 1937 chaparral quadrat, e part of Lassen County Said Valley Comment
  CHSC89741  Linanthus harknessii L. P. Janeway 2004-6-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS58449  Linanthus harknessii W. L. Jepson 1918-8-5 7814 Lassen near South Fork Peak 1645 Comment
  SEINET10902894  Linanthus harknessii Mary Susan Taylor 1974-1 Taylor 290 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC29901  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds. 1584 Comment
  CHSC6204  Linanthus pungens 1944-7-9 Lassen Eagle Lake. Dow Butte. 2042 Comment
  CHSC64802  Linanthus pungens Vernon H. Oswald 1995-5-24 6758 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. On a outcrop at the base of the Amedee Mtns. 1280 Comment
  CHSC61430  Linum lewisii var. lewisii Vernon H. Oswald; Lowell Ahart 1993-8-18 5832 Lassen Lassen Volcanic National Park. Summit ridge of Mt. Conard, near the S boundary of the park. Common in loose rock approaching the highest point on the ridge from the north. 2484 Comment
  CHSC91299  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2005-6-2 11935 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
  RSA795325  Linum lewisii var. lewisii L. Ahart, John Dittes 2010-7-31 16981 Lassen 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  CAS-BOT-BC435427  Lithophragma glabrum John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 1524 Comment
  CHSC60688  Lithophragma glabrum Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5273 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CAS-BOT-BC435430  Lithophragma glabrum Louella Bass 1975-4-15 22 Lassen Elysian Valley; Sierra Nevada 1325 Comment
  JEPS47654  Lithophragma parviflorum T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  RSA38473  Lithophragma parviflorum P. A. Munz 1947-5-18 11862 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  CAS-BOT-BC428422  Lithophragma tenellum John Thomas Howell 1934-6-14 12129 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS21376  Lithospermum ruderale Brown and Wieslander 1922-6-13 64 Lassen Martin Springs Eagle Lake (Eagle Lake) Comment
  UCR73173  Lomatium G. L. Webster 1989-5-13 7718 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA0049671  Lomatium bicolor var. leptocarpum Dean Wm. Taylor 2012-5-15 21195 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
  CHSC29900  Lomatium dissectum var. multifidum Robin Ondricek 1978-6-8 44 Lassen Ridge E of Lower Dry Lake in area between basalt and loam. 1767 Comment
  SEINET178371  Lomatium dissectum var. multifidum Marcus E. Jones 1897-6-25 Lassen Susanville. 1341 Comment
  NY1141204  Lomatium donnellii M. Lavin 1982-5-16 4064 Lassen 1.5 miles east of Hallelujah Junction (U.S. 395). 22 air miles 325° from Reno, Nevada. West side of Petersen Range 1676 Comment
  SEINET8584736  Lomatium foeniculaceum subsp. macdougalii W. Harnach 2010-6-8 1243 Lassen 2 miles west of the California Nevada state line, north side of Fort Sage Road, northeast of Doyle, CA. 1219 Comment
  CAS-BOT-BC211146  Lomatium grayi Mrs. C. C. Bruce 1898-6-1 2286 Lassen Madaline [Madeline] Plains Comment
  CHSC71064  Lomatium macrocarpum Vernon H. Oswald; Lowell Ahart 1998-5-22 9110 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  RSA339995  Lomatium macrocarpum Noel Holmgren, Patricia Holmgren 1980-7-3 9487 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  RSA724325  Lomatium macrocarpum Richard Halse 1977-5-22 1549 Lassen Along Highway 395, 9.5 miles north of Madeline 1490 Comment
  CHSC7744  Lomatium nevadense Beverley J. Wise 1969-4-13 116 Lassen 5.6 mi. east on Las. Co. Rd. 338 past the junction with Hwy 395. 1554 Comment
  UC1123083  Lomatium nevadense A. Simontacchi 1940-5-27 768 Lassen 9.3 mi NW of Crater Lake 1752 Comment
  CHSC67148  Lomatium nevadense var. nevadense James D. Jokerst 1991-5-29 3307 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
  JEPS118215  Lomatium nevadense var. nevadense Dean W. Taylor 2004-5-11 19060 Lassen 1.5 miles southwest of Constantina along Highway 395 1402 Comment
  UC1561383  Lomatium nevadense var. nevadense Barbara Ertter with Gary Schoolcraft 1987-6-16 7185 Lassen ridge w. Hot Springs VABM (Skeedaddle Mts., on n.e. side of Honey Lake); Skeedaddle Mts., Honey Lake 2133 Comment
  SEINET5333498  Lomatium nevadense var. nevadense K. Chambers 2002-4-21 6347 Lassen Highway 395, 28 mi. S. of Ravendale, n. of Honey Lake. Comment
  UC773965  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  UC1167732  Lomatium nudicaule Peter H. Raven with Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 mi. e. Westwood (on State Hwy. 36) Comment
  UC671788  Lomatium plummerae Dan Tillotson 1942-6-10 Lassen four mi s Madeline Comment
  CAS-BOT-BC217797  Lomatium ravenii Lincoln Constance; E. DiFulvio 1962-4-16 3747 Lassen 1 mile S of Ravendale 1615 Comment
  UC1177543 Image available Lomatium ravenii Peter H. Raven with Otto T. Solbrig 1958-6-17 13287 Lassen 1.8 mi. s. Ravendale (along U.S. Hwy. 395) Comment
  UC1599737 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen s. Ravendale 1615 Comment
  OBI81733  Lomatium ravenii Tracey Call, Viola Call 1961-5-30 2048 Lassen about 2 miles south of Ravendale Comment
  CHSC42628  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2050 Lassen Hwy 36, 15.0 mi e of Plumas-Lassen Co. line, 3.5 mi ne of Fredonyer Pass. 1508 Comment
  CHSC5018  Lomatium triternatum var. macrocarpum L. G. Bennett 1967-6-24 26 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  SEINET11130700  Lomatium triternatum var. platycarpum N. H. Holmgren, P. K. Holmgren 1978-6-11 8930 Lassen Upper Smoke Creek, S side of Observation Peak, 7.6 km (4.7 miles) NE of Rye Patch Canyon summit, 18.5 km (11.5 miles) airline distance ESE of Ravendale. 1700 Comment
  CHSC112137  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21244 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 air miles S of Adin). 1722 Comment
  SEINET11131289  Lomatium triternatum var. triternatum J. A. Young 1982-6-9 s.n. Lassen Mayer's Ranch, Adin 1372 Comment
  POM78250  Lomatium vaginatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  SEINET9672826  Lomatium vaginatum G. Schoolcraft 1979-5-1 13 Lassen East of Post Camp 1707 Comment
  CHSC60829  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5608 Lassen N of Hwy 44 of Harvey Rd. One (34N27) 1.5 mi NE of Aspen Well, N of Harvey Valley, NE of Poison Lake. 1761 Comment
  UC1249270  Lotus corniculatus Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8474 Lassen 1 mi se Milford (near Honey Lake, 26 mi se of Susanville) 1310 Comment
  POM28315  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS55772  Lotus purshianus var. purshianus Brown and Wieslander 1922-8-19 89 Lassen Martin Springs Eagle Lake Comment
  UC507000  Lotus purshianus var. purshianus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 193 Lassen Grass Valley Lassen Forest 1694 Comment
  UC862219  Lotus purshianus var. purshianus A. A. Heller 1938-7-28 15300 Lassen just e Westwood Comment
  SEINET3559881 Image available Lotus tenuis Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8474 Lassen Near Honey Lake, 1 mi SE of Milford, 26 mi SE of Susanville 1311 Comment
  POM253309  Lotus unifoliolatus A. A. Heller 1938-7-28 15300 Lassen Just east of Westwood. Comment
  CHSC113075  Ludwigia palustris Lowell Ahart; John Dittes 2013-7-23 18904 Lassen Dry drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC198253  Lupinus John Thomas Howell 1976-7-19 51950 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA519408  Lupinus Rockwell 1925-7-1 s.n. Lassen Beckwith 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
  SEINET10484655  Lupinus arbustus subsp. calcaratus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2577 Lassen 6 miles s of adin; along cal hwy 139 right-of-way; in basalt clay, grassy road Bank; artemisia, juniper assoc. 1372 Comment
  POM252845  Lupinus arbustus subsp. silvicola A. A. Heller 1938-6-4 15142 Lassen In open places near Fredonyer Pass. 1707 Comment
  CAS-BOT-BC208728  Lupinus argenteus var. heteranthus F. Payne 1929-7-12 74 Lassen Lost Lake, Warner Mts. 2286 Comment
  CAS-BOT-BC208737  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21501 Lassen Reserboir above Grasshopper Valley, Lassen Forest 1500 Comment
  CAS-BOT-BC208740  Lupinus argenteus var. heteranthus Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 11 miles south of Ravendale, Hwy. 395 Comment
  CAS-BOT-BC208748  Lupinus argenteus var. heteranthus Alice Eastwood; John Thomas Howell 1940-6-16 8334 Lassen Near Susanville. Comment
  CAS-BOT-BC208751  Lupinus argenteus var. heteranthus John Thomas Howell 1934-7-10 12560 Lassen Black's Mt. Comment
  CAS-BOT-BC208754  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21512 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CDA27387  Lupinus argenteus var. heteranthus T. C. Fuller 1963-6-11 10660 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC93684  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2005-6-1 11873 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.8 miles (air) northwest of Hallelujah Junction. 1448 Comment
  NY736926  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Along U.S. Highway #395 just outside of Johnstonville. Upper Sonoran Life Zone Comment
  NY736927  Lupinus argenteus var. heteranthus J. T. Howell 1974-7-8 50461 Lassen Susanville 1295 Comment
  NY736930  Lupinus argenteus var. heteranthus G. H. True Jr. 1936-6-27 556 Lassen Near top of Hot Spring Mountain 1829 Comment
  NY736987  Lupinus argenteus var. heteranthus M. Bourell 1997-5-31 5879 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  RSA0037007  Lupinus argenteus var. heteranthus Lowell A. Ahart, John Dittes 2008-6-19 14873 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
  UC1137308  Lupinus argenteus var. heteranthus George A. Fischer and Irwin H. Johnson 1933-7-14 F- 265 Lassen Lassen Forest 1767 Comment
  CHSC106591  Lupinus argenteus var. meionanthus C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  SEINET2063029 Image available Lupinus aridus subsp. aridus Arnold Tiehm, Jan Nachlinger, Gary Schoolcraft 1984-6-25 8823 Lassen Rodeo Flat, 2.7 miles W of the state line on Buckhorn Road from Ravendale to Hwy 81. Comment
  HSC81486  Lupinus caudatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6015 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 Comment
  JEPS88246  Lupinus lepidus var. confertus Vernon H. Oswald and Lowell Ahart 1996-6-17 7807 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, on edge of Susan River E of Devils Corral Trailhead and w of 6.0 mi post); Modoc Plateau, Susan River 1402 Comment
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  CHSC99135  Lupinus lepidus var. lobbii Lowell Ahart; John Dittes 2008-6-19 14886 -A Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC506994  Lupinus leucophyllus George A. Fischer and Irwin H. Johnson 1933-7-12 204 Lassen Grass Valley. Comment
  SEINET11268214  Lupinus leucophyllus Vernon H. Oswald, Lowell Ahart 1993-6-28 5607 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake.; 0 1725 Comment
  SEINET8058059  Lupinus nevadensis G. Schoolcraft 1997-5-7 2587 Lassen Fort Sagae Mtns. ne of Doyle CA. 1585 Comment
  UC574453  Lupinus onustus M. E. Jones 1897-6-26 Lassen Perkin's Ranch Susanville (Susanville) 1463 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
  CHSC64788  Lupinus pusillus var. intermontanus Vernon H. Oswald 1995-5-31 6818 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  HSC40685  Lupinus sellulus var. artulus Thomas W. Nelson, Jane P. Nelson 1976-8-1 3123 Lassen Lassen Volcanic National Park at Devestated Area Comment
  RSA69483  Luzula comosa F. W. Peirson 1926-6-22 6826 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  CHSC102882  Luzula comosa var. laxa Peter F. Zika 2008-7-14 23895 Lassen Cascade Range Highlands. E side of Route A21, NW end of Clover Valley, Susan River basin. 1800 Comment
  CAS-BOT-BC231452  Lycium barbarum John Thomas Howell 1974-7-8 50512 Lassen Susanville 1295 Comment
  CHSC113060  Lythrum hyssopifolia Lowell Ahart; John Dittes 2013-7-23 18896 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
  JEPS107819  Lythrum hyssopifolia Lowell Ahart, John Dittes 2005-6-2 11969 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  HSC93435  Lythrum portula Vernon H. Oswald, L. Ahart 1996-8-1 8104 Lassen Mtn. Meadows Reservoir SW of Westwood, receding shore NE of Indian Ole Dam 1540 Comment
  SFV7754  Madia citrigracilis T. Gordon, K. Kimbrough 1975-8-15 1214 Lassen 16 miles south of Adin. 1402 Comment
  UC89447  Madia elegans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC1053319  Madia glomerata J. M. Tucker 1950-7-25 1975 Lassen road from Pittville 33 mi nw Susanville 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
  JEPS88244  Madia gracilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7783 Lassen bank on n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (trail accessed at Devil's Corral Trailhead located off Hwy, ca. 7 mi w of Susanville); Modoc Plateau 1432 Comment
  CAS-BOT-BC343054  Madia gracilis David D. Keck 1930-7-23 949 Lassen Susanville 1280 Comment
  JEPS128415  Maianthemum stellatum Catherine Bauer with Ellen Bauer Benson 2017-8-16 21 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC512878  Maianthemum stellatum Louella Bass 1973-6-17 120 Lassen Elysian Valley 1325 Comment
  JEPS103229  Malacothrix floccifera G. Schoolcraft 1997-6-24 2595 Lassen About 4 miles W of Doyle on S side of Doyle Grade Road 1767 Comment
  POM37232  Malacothrix floccifera Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1616 Comment
  UC1523757  Malacothrix floccifera Gary Schoolcraft 1983-7-6 1068 Lassen w of Susanville (n of Gold Run Road) 1463 Comment
  CHSC80607  Malacothrix glabrata V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10038 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  JEPS102664  Malacothrix glabrata V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10038 Lassen N-NE of Doyle (dirt road bordering the E side of Turtle Mountain) 1828 Comment
  UC585134  Malacothrix glabrata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1767 Lassen ridge above Red Rock 1524 Comment
  UCD54571  Malvella leprosa Ellen Dean; Dawn Cunningham 2005-10-25 2754 Lassen E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond. 1248 Comment
  RSA312311  Malvella leprosa Verne Grant, Irving Schneider 1947-9-6 8386 Lassen Hot springs about one mile west of Wendel. Comment
  RSA0011558  Marsilea vestita R. F. Thorne, Larry E. DeBuhr 1975-8-22 46994 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC91314  Matricaria discoidea Lowell Ahart; John Dittes 2005-6-1 11895 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS93831  Matricaria discoidea Vernon H. Oswald and Lowell Ahart 1998-6-4 9138 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  SEINET3816871  Matricaria discoidea Noel H. Holmgren, Patricia K. Holmgren 1980-7-5 9522 Lassen Upper smoke creek drainage, 20.4 km from U.S. highway 395 via Rye Patch Canyon, 24 km airline distance southeast of Ravendale, 1580 Comment
  CHSC36282  Matricaria occidentalis M. S. Taylor 1982-6-12 4651 Lassen Alkali flats in Hartson Lake Refuge, ca. 1 mi n of Hartson lake on n side of Honey Lake, ca. 13 mi se of Susanville. 1222 Comment
  UCD54546  Matricaria occidentalis Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2730 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  JEPS93977  Melica fugax Vernon H. Oswald 1998-6-22 9232 Lassen ca. 18 air mi. n. Westwood (Champs Flat Rd. (A-21) 1.8 mi. n. of Hwy. 44) 1749 Comment
  JEPS94455  Melica fugax Vernon Oswald and Lowell Ahart 1997-6-24 8645 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
  SEINET208829 Image available Melica fugax Jack Major 1966-6-24 Lassen Modoc National Forest ; Long Valley 3 miles airline southwest of Patterson Guard Station northeastern Lassen County. 2088 Comment
  UC38833  Melica fugax M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek 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
  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
  UCR67372  Mentha canadensis George K. Helmkamp 1990-9-23 E- 16 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  HSC81799  Mentzelia albicaulis Thomas W. Nelson, Jane Nelson 1980-7-6 6025 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
  JEPS117562  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UCD55287  Mentzelia albicaulis Ellen Dean; Gary Schoolcraft 2006-5-16 3106 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  HSC63775  Mentzelia albicaulis Teresa Prendusi 1980-4-28 Lassen Rice Canyon along W slope. 1372 Comment
  JEPS124816 Image available Mentzelia albicaulis Joe Ammirati 1964-6-30 70 Lassen N. of Susanville ca. 12.3 mi. on HW 139. Comment
  RSA715551  Mentzelia congesta L. Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  UC1609444  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  CHSC5300  Mentzelia dispersa P. Balch 1955-7-22 Lassen Paul Bunyan Rd., 3 1/2 mi from Susanville toward Eagle Lake. 1889 Comment
  CHSC92643  Mentzelia dispersa L. P. Janeway 2005-7-4 8470 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  RSA712934  Mentzelia dispersa L. P. Janeway 2005-7-4 8470 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UCD117218  Mentzelia dispersa Verne Grant; Irving Schneider 1947-8-1 8228 Lassen irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
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Dec 5 2012
  CDA36642  Mentzelia dispersa T. C. Fuller 1963-7-15 10900 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  JEPS88213  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1996-6-17 7772 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville 1432 Comment
  SD130462  Mentzelia dispersa John Thomas Howell, Gordon H. True 1973-8-1 50204 Lassen The Sierra Nevada. Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville. 2164 Comment
  JEPS124811 Image available Mentzelia laevicaulis J. Yamanaka 1965-7-12 120 Lassen Highway 395, 15 miles N. of junction of Calif. 104 US 395. Comment
  UC1121656  Mentzelia montana Robert W. Gardner 1937-6-18 G 22 Lassen Halls Flat Quadrangle, Burgess Spring Experimental Range Comment
  UC420650  Mentzelia montana T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  JEPS88323  Menyanthes trifoliata Vernon H. Oswald and Lowell Ahart 1996-6-24 7890 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, Papoose Meadows); Modoc Plateau, Papoose Meadows 1633 Comment
  JEPS95001  Mertensia ciliata Vernon Oswald and Lowell Ahart 1997-6-24 8617 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  CAS-BOT-BC231081  Mertensia oblongifolia Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-14 86- 39 -1 Lassen 1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale 1706 Comment
  CAS-BOT-BC429185  Micranthes oregana Parkison 1916-7-21 27 Lassen Lassen National Forest. Harvey R.S. 1676 Comment
  SEINET5345127  Micromonolepis pusilla A. Tiehm 1980-1 5757 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC322655  Microseris laciniata Elmer I. Applegate 1929-6-24 5879 Lassen Big Valley near Bieber 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
  JEPS118158  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
  HSC28899  Microseris nutans D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19168 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC349299  Microseris nutans Elmer I. Applegate 1929-6-21 5778 Lassen Kelly's Camp, Warner Valley, Mt. Lassen region 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
  SEINET10902895  Microsteris gracilis Mary Susan Taylor 1974-5-4 Taylor 227 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  RSA104218  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-17 9799 Lassen South of Secret Valley, north of Litchfield 1311 Comment
  UC24031 Image available Miltitzia glandulifera var. californica Mrs. C. C. Bruce 1898-6-1 21354 Lassen Madeline Plains; ; Madeline Plains, Lassen Co. Comment
  SEINET13764907  Mimetanthe pilosa M. J. Williams 1974-7-26 74 -L-29 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UCD122430  Mimulus breviflorus S. E. Schoenig 1998-7-5 98- 71 Lassen East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track. 1749 Comment
  UC726695  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi e Westwood 1524 Comment
  CHSC117184  Mimulus guttatus Lowell Ahart; John Dittes 2016-6-7 21009 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  HSC95322  Mimulus guttatus Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 533 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1012180  Mimulus guttatus Francis W. Pennell 1940-6-10 25778 Lassen 3 mi e Westwood (Route 36) 1584 Comment
  CDA41794  Mimulus guttatus T. C. Fuller 1961-5-17 6961 Lassen Hot springs, Wendell. 0 Comment
  JEPS2648 Image available Mimulus jepsonii W. L. Jepson 1910-6-10 4112 Lassen Twin Lakes (Grassy Lake); ; Twin Lakes (Grassy Lake), Lassen Co. 2225 Comment
  JEPS107380  Mimulus mephiticus Lowell Ahart, John Dittes 2005-6-1 11869 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC726697  Mimulus microphyllus A. A. Heller 1938-6-22 15183 Lassen 1 mi e Westwood 1524 Comment
  HSC20714  Mimulus moschatus M. T. Milligan 1964-7-16 132 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UCD122771  Mimulus nanus S. E. Schoenig 1998-7-5 98- 72 Lassen by S side of Hwy 44 vicinity of Bogard campground. 1737 Comment
  JEPS24856  Mimulus nanus var. mephiticus Jean Langenheim 1957-6-26 4377 Lassen nw end Said Valley 1645 Comment
  UC1561980  Mimulus nanus var. mephiticus Barbara Ertter with Gary Schoolcraft 1987-6-16 7197 Lassen saddle on e side Hot Springs Peak (on ne side of lake); Skeedaddle Mountains, Honey Lake 2194 Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  RSA536398  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-7-2 634 Lassen 0.25 mile SE of Robbers Spring, 70 ft SSW of Hwy 44, 3.5 miles NW of USFS Bogard Work Center. 1098 Comment
  JEPS94112  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1998-5-22 9123 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  CAS-BOT-BC10905  Mimulus suksdorfii Clarence Roy Quick 1962-6-17 62 -21 Lassen Blacks Mountain Experimental Forest Headquarters, USFS, south of Hall's Flat. 1615 Comment
  RSA149052  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  CHSC65314  Monardella odoratissima subsp. glauca Vernon H. Oswald; Lowell Ahart 1995-8-14 7192 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  LA54185  Monardella odoratissima subsp. glauca Carl Epling; William Robison 1935-7-15 sn Lassen Fredonyor Pass Comment
  CAS-BOT-BC213930  Monardella odoratissima subsp. pallida M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Mts. s of Eagle Lake Comment
  CAS-BOT-BC213933  Monardella odoratissima subsp. pallida Clare B. Hardham 1969-8-28 17455 Lassen Slope west of Janesville, Sierra Nevada Comment
  CAS-BOT-BC222148  Monardella odoratissima subsp. pallida Geo. A. Fisher 1928-6-12 27 Lassen Lassen National Forest 1615 Comment
  CHSC27651  Monardella odoratissima subsp. pallida N. E. Heiken 1978-7-27 94 Lassen Beneath Pine Creek Birdge, just W of fish trap. 1560 Comment
  CHSC29873  Monardella odoratissima subsp. pallida Robin L. Ondricek 1978-6-27 74 Lassen 1977 Burn, .1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  OBI75862  Monardella odoratissima subsp. pallida Anthony Baniaga 2011-9-1 509 Lassen Lassen Natl Forest. W of Bailey Crk, along F.S. 10 Red Cinder quad. T29N R7E sec 3 SE of NE 1844 Comment
  JEPS122366  Monardella sheltonii Joseph Broberg, Jaycee Leonard 2012-8-27 CA 320 -127 Lassen From Alturas head South on Highway 395. At the town of Likely turn left onto county road 64, and continue to Jess Valley. Turn right at fork onto county road 258. Continue past Blue Lake, and turn onto Clark Valley road. Collection site is just after border between BLM and USFS land. South of aspen stand Comment
  JEPS95874  Monolepis nuttalliana Vernon H. Oswald and L. Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030: T31N R15E Sect. 31, 4420 ft elevation, sagebrush scrub 1347 Comment
  NY497723  Montia chamissoi N. H. Holmgren 1978-6-11 8917 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
  NY497728  Montia chamissoi G. Schoolcraft 1993-6-1 2272 Lassen Upper Secret Creek, south of Tule Patch Spring 1463.0 Comment
  CHSC93672  Montia linearis Lowell Ahart; John Dittes 2005-6-2 11956 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC773867  Montia linearis L. R. Short, Wm. Gansberg 1936-6-8 S 392 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1743 Comment
  JEPS88525  Montia linearis Vernon H. Oswald and Lowell Ahart 1996-6-24 7875 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 Forest. 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
  UCD86562  Muhlenbergia asperifolia R. Tofsrud 1947-7-1 227 Lassen Between Johnstonville and Standish. Comment
  UC1024822  Muhlenbergia filiformis Leo Whitney 1935-6-21 3250 Lassen meadow Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  UC163592  Muhlenbergia filiformis Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  RSA256324  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-7-1 6240 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  RSA256329  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-5-23 6170 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1738 Comment
  UCD86769  Muhlenbergia jonesii A. H. Shunk 1923-1 12 Lassen Bogard Ranger Station. Comment
  CAS-BOT-BC275082  Muhlenbergia richardsonis Malcom A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline Comment
  CHSC58862  Muhlenbergia richardsonis Vernon H. Oswald; Lowell Ahart 1992-7-16 5105 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. On the margin of the lake. 1745 Comment
  SACT001607  Muhlenbergia squarrosa Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  CHSC57215  Muilla transmontana Mary Meyer 1980-5-20 523 Lassen On mesa 1 mi due east of BLM campground and spring, north of Snowstorm Mountain. 1645 Comment
  JEPS96136  Myosotis discolor Vernon H. Oswald and Lowell Ahart 1996-6-24 7880 Lassen ca. 0.5 mi. e. of Eagle Lake Rd. (A1) and 2.5 mi. s. of Eagle lake (Papoose Meadows, along Papoose Creek where it leaves the n. end of the meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  UC1126100  Myosurus apetalus A. Simontacchi 1940-5-21 761 Lassen 4.1 mi e Blacks Mountain; Lassen National Forest 1737 Comment
  UC1126101  Myosurus apetalus A. Simontacchi 1940-5-17 739 Lassen 5.9 mi s Patterson Mtn; Lassen National Forest 1706 Comment
  CAS-BOT-BC392254  Myosurus apetalus Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm; Arnold Tiehm 1986-5-14 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale. 0.1 mi from Calif-Nev line Comment
  NY492641  Myosurus apetalus M. J. Williams 1986-5-14 8638- 3 Lassen Tuledad Canyon Road, from Duck Flat to Ravendale. 0.1 mile west of California-Nevada line. Comment
  SEINET12093181  Myosurus apetalus M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale. 0.1 mi W of Calif-Nev line Comment
  CHSC68868  Myosurus apetalus var. borealis Vernon Oswald; Lowell Ahart 1997-6-24 8651 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. In a meadow. 2249 Comment
  CHSC107321  Myosurus minimus Lowell Ahart; John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC112462  Myosurus minimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18726 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
  JEPS97413  Myosurus minimus Vernon H. Oswald and L. Ahart 1995-6-19 6895 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Abundant on the drying beds of vernally flooded wetlands on a stony and brushy flat. 1383 Comment
  RSA0035919  Myosurus minimus Lowell A. Ahart, John Dittes 2008-6-20 14940 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA125293  Myosurus minimus Peter H. Raven 1958-6-17 13285 Lassen Along United States Hwy 395, 1.9 miles S of Ravendale. Comment
  POM93121  Myriophyllum hippuroides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1101505  Myriophyllum sibiricum Malcolm A. Nobs and S. Galen Smith 1949-7-20 1049 Lassen Irrigation canal, ca. 4 mi W of Adin. Comment
  UCR153449  Myriophyllum sibiricum R. F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139 1646 Comment
  HSC22985  Nama aretioides John Pratt 1970-7-5 67 Lassen 1250 Comment
  RSA0084057  Nama aretioides var. californica Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC7683  Nama demissa Berverly J. Wise 1969-5-18 48 Lassen 7.7 mi. E. of Susanville on Co. Rd. 215 on the south side of the road. 1341 Comment
  CHSC91296  Nama densa var. densa Lowell Ahart; John Dittes 2005-6-1 11908 A Lassen On the east side of Scott Road, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1460 Comment
  JEPS107795  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11908 -A Lassen On the east side of Scott Road, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1460 Comment
  UC971978  Nama lobbii Annetta Carter 1946-8-19 1777 Lassen crest of ridge ten mi ne Susanville; ne of Susanville 1676 Comment
  UCD87411  Nassella cernua T. S. Brandegee 1892-7-1 s.n. Lassen Susanville. Comment
  CHSC9067  Navarretia Silas Carr 1970-6-24 126 Lassen E. edge of road entering N. portion of Murrers Meadow. Comment
  RSA0011498  Navarretia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46974 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  UC1124158  Navarretia breweri A. Simontacchi 1940-5-28 774 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC604552  Navarretia breweri C. W. Sharsmith 1938-7-18 3638 Lassen 3 mi s Termo; Madeline Plains Comment
  CHSC29885  Navarretia capillaris Robin L. Ondricek 1978-7-5 89 Lassen At the edge of the trees on the ne side of Mahogany Lake. 2057 Comment
  SEINET200215  Navarretia divaricata C. McMillan 1949-6-15 1541 Lassen Five miles west of Bieber Comment
  CHSC23850  Navarretia divaricata subsp. vividior K. R. Stern 1974-6-22 5850 B Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  UC1058209  Navarretia divaricata subsp. vividior C. McMillan 1949-6-15 1541 Lassen 5 mi w Bieber Comment
  UCD32670  Navarretia intertexta Beecher Crampton 1954-7-6 2072 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  POM74488  Navarretia intertexta Marcus E. Jones 1897-7-1 10134 Lassen 7 miles south of Susanville at Perkin's Ranch 1524 Comment
  JEPS121309  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2013-7-22 18869 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS124382  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2015-11-14 20303 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC23861  Navarretia intertexta subsp. propinqua A. W. Harvilik 1967-7-7 38 Lassen Collected on hwy. 139 ca. 6 mi from Susanville. 1463 Comment
  JEPS106521  Navarretia intertexta subsp. propinqua L. P. Janeway 2004-6-26 8144 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  JEPS17720  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with G. T. Robbins 1955-7-19 5373 Lassen 10.3 mi se Adin (along Ash Valley road between Adin and Madeline) 1524 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
  RSA91887  Navarretia intertexta subsp. propinqua Beecher Crampton 1954-7-5 2047 Lassen State Highway 36, 4.5 miles west of Susanville 1433 Comment
  UCD48605  Navarretia intertexta subsp. propinqua John M. Tucker 1950-7-25 1977 Lassen On road from Pittville, 33 miles northwest of Susanville, Lassen County, California. Comment
  CHSC1253  Navarretia leptalea 1951-7-8 Lassen Pit River. 1524 Comment
  CHSC27670  Navarretia leptalea subsp. bicolor Robert A. Schlising 1978-7-9 3312 Lassen South of Eagle Lake. Area between Papoose Meadows and Eagle Lake Road. Comment
  SJSU11520  Navarretia leucocephala subsp. bakeri J. W. Tilden 1958-6-27 1295 Lassen Madeline, Madeline Plains 1615 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
  CHSC112753  Navarretia leucocephala subsp. leucocephala Lowell Ahart; John Dittes 2013-7-22 18851 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC63964  Navarretia leucocephala subsp. minima Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  JEPS120031  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2012-7-9 18288 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  POM312617  Navarretia leucocephala subsp. minima Malcolm A. Nobs, S. Galen Smith 1949-5-29 756 Lassen Nubieber on Great Northern Railway, Highway 299 Comment
  RSA0035408  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC230388  Navarretia leucocephala subsp. minima Peter H. Raven; Otto T. Solbrig 1958-6-17 13296 Lassen Along US Highway 395, 4.8 miles S of Madeline Comment
  UC1137583  Navarretia linearifolia subsp. linearifolia A. Simontacchi 1940-6-4 803 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1143039  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  UC1609451  Navarretia linearifolia subsp. linearifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5616 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  JEPS27169  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 1673 Lassen about 4 mi sw Gold Run Creek junction with Richmond Road (Gold Run Creek, s of Susanville); Gold Run Creek Comment
  SBBG22467  Nemacladus capillaris C. B. Hardham 1961-6-16 7450 Lassen Gold Run Crk, S of Susanville Comment
  JEPS126535  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 Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC1069207  Nemophila pedunculata A. Simontacchi 1940-5-21 759 Lassen 4.1 mi sse Blacks Mtn; Halls Flat Quad., Lassen National Forest, sse of Blacks Mtn 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
  CHSC65042  Neoholmgrenia andina Vernon H. Oswald; Lowell Ahart 1995-7-5 6959 Lassen Modoc Plateau. North of Honey Lake at Bull Flat on Smoke Creek Ranch Rd., 10.3 mi e of Hwy. 395. At roadside. 1432 Comment
  JEPS19729  Neoholmgrenia andina Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5992 Lassen about 1 mi n Sage Hen siding on S.P. Railway (along U.S. Hwy 395, and 7.0 mi n of Madeline) 1676 Comment
  UC1137647  Nestotus stenophyllus A. Simontacchi 1940-5-17 749 Lassen 1.1 mile SSW of Dixie Spring 1699 Comment
  UC1191769  Nicotiana acuminata var. multiflora Verne Grant and Irving Schneider 1947-9-7 8399 Lassen 0.5 mi w Litchfield (Susan River by Highway 395 at Bridge 7-34); Susan River Comment
  JEPS12268  Nicotiana attenuata W. L. Jepson 1939-8-12 19410 Lassen sw of Dixie Valley Comment
  UC7442  Nitrophila occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3326 Lassen Honey Lake Valley 1219 Comment
  UC1070117  Nothocalais troximoides A. Simontacchi 1940-5-17 732 Lassen 5.7 mi ssw Patterson Mountain; Halls Flat Quad. Comment
  SEINET5345714  Oenothera deltoides var. piperi P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  RSA516978  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  RSA27327  Oenothera flava C. L. Hitchcock 1940-5-26 6642 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UC524174  Oenothera flava subsp. flava Elmer I. Applegate 1929-6-24 5881 Lassen s Bieber; Big Valley Comment
  CHSC9548  Onobrychis viciifolia R. Clicquennoi 1967-6-24 13 Lassen .2 mi w of main rd. 3 mi e of Eagle Lake Biological Station on rd. to Murrer's Meadow. 1554 Comment
  JEPS109987  Oreostemma alpigenum var. andersonii Dean W. Taylor 2007-6-14 20131 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood 1801 Comment
  OBI75869  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
Read comments
Apr 29 2013
  CHSC10945  Orobanche corymbosa K. D. Cox 1971-7-5 144 Lassen Approx. 1/4 mi. NW of main campus L.F.S. 1554 Comment
  CAS-BOT-BC499907  Orobanche fasciculata R. J. Dobbs 1928-5-23 s.n. Lassen Strawberry Pek switchback 1219 Comment
  UC1609174  Orobanche uniflora subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5615 Lassen N of Highway 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. Comment
  SEINET10549655  Orthocarpus copelandii Mary Susan Taylor 1974-1 Taylor 307 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SD52193  Orthocarpus copelandii var. cryptanthus F. Stephens 1894-7-15 8115 Lassen Bunch Grass Spring Comment
  HSC69075  Osmorhiza occidentalis Gary Schoolcraft 1980-7-29 342 Lassen Widow Peak Area 1585 Comment
  UC125352  Oxytheca dendroidea subsp. dendroidea T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UCR92119  Oxytheca dendroidea subsp. dendroidea G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  CAS-BOT-BC316809  Packera cana Alice Eastwood; John Thomas Howell 1940-6-15 8313 Lassen Upper Willow Creek East of Hayden Hill Comment
  HSC42421  Packera eurycephala Barbara Kelly 1977-8-8 548 Lassen Ash Creek Campground Comment
  CAS-BOT-BC316859  Packera eurycephala var. eurycephala Michael A. Vincent 1999-6-9 8581 Lassen Along US Rte. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  UC35980  Packera eurycephala var. eurycephala Mrs. C. C. Bruce June 1898 2176 Lassen Shumway Comment
  CHSC7639  Packera multilobata Beverley J. Wise 1969-5-3 27 Lassen 4.5 mi. east of junction of Hwy 395 and Las. Co. 338 (Smokey Creek Road). 1554 Comment
  JEPS25526  Packera multilobata Rimo Bacigalupi with Lincoln Constance 1959-6-16 7139 Lassen beside U.S. Highway 395 one fourth mi s of junction of road to Smoke Creek 1341 Comment
  CHSC93246  Packera streptanthifolia John Dittes; Scott Chamberlain 2004-6-28 1011 Lassen Modoc Plateau; Long Valley; ca. 2.0 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1448 Comment
  JEPS121279  Panicum Lowell Ahart, John Dittes 2013-7-23 18909 Lassen On the E side the gravel road, N-S road W of Big Canal, 0.76 Mile N of CA 299, 4.9 air miles NE of Bieber, Big Valley. Comment
  UCD89524  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen Susanville. 1295 Comment
  CAS-BOT-BC259612  Pascopyrum smithii James Jokerst 1983-7-25 1898 Lassen Near Madeline Plains 1614 Comment
  CHSC77265  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE. of Shaffer Mtn. 1356 Comment
  CDA5733  Pectocarya penicillata L. Ahart, J. Dittes 2005-6-1 11907 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  CHSC71076  Pectocarya penicillata Vernon H. Oswald; Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  JEPS107455  Pectocarya penicillata Lowell Ahart, John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  SEINET10456342  Pectocarya penicillata David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17750 Lassen 3 mi. S of Hallelujah Jct, on US Hwy 395, jct of US 395 & CA 70. Comment
  JEPS10720  Pedicularis attollens Brown and Wieslander 1922-7-23 29 Lassen Martin Springs; Eagle Lake Comment
  JEPS79152  Pedicularis attollens L. R. Heckard with R. Bacigalupi 1980-6-12 5259 Lassen just ne of Westwood (near golf course) 1554 Comment
  SBBG68675  Pedicularis attollens S. W. Hutchinson -Jun-1925 1092 Lassen Eagle Lake 1554 Comment
  HSC68839  Pedicularis centranthera Gary Schoolcraft 1980-4-30 211 Lassen W of Shaffer Well, N of Shaffer Mtn. 1354 Comment
  JEPS3332  Pedicularis groenlandica George Gillett 1952-7-29 119 Lassen w slopes of Paradise Meadow; Lassen Volcanic National Park 2148 Comment
  UC2042972  Pedicularis semibarbata Barbara Ertter 1990-5-13 8965 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  POM195126  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 948 Lassen Susanville. 1280 Comment
  CHSC65129  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1995-7-24 7135 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  CHSC57320  Penstemon gracilentus Mary Meyer 1980-7-21 Lassen 2072 Comment
  JEPS11269  Penstemon gracilentus Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  JEPS11274  Penstemon gracilentus Brown and Wieslander 1922-7-23 43 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  RSA746506  Penstemon gracilentus K. M. Meyer, A. Townesmith 2007-7-23 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off hwy. 44. (turn at rest area). 1900 Comment
  SEINET5329198 Image available Penstemon neotericus C. G. Gulling 1905-1 1543 Lassen Big Meadows Comment
  CAS-BOT-BC383112  Penstemon newberryi var. newberryi Andrew Townesmith; Karen M. Meyer 2007-7-22 843 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  SEINET5323576 Image available Penstemon procerus var. procerus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC36449  Penstemon roezlii Susan H. Euing 1982-6-4 3 Lassen Ca. 0.5 mi e of Murrers Upper Meadow on road leading to meadow. Comment
  CHSC36470  Penstemon roezlii Jeffrey R. Peek 1982-6-4 31 Lassen Ca. .5 mi e of Murrers Upper Meadow on road going to meadow. Comment
  POM268103  Penstemon roezlii H. C. Cantelow 1941-5-22 s.n. Lassen North of Litchfield, US Hwy 395. Comment
  UC585179  Penstemon roezlii E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1764 Lassen summit of ridge e Red Rock; e of Red Rock 1828 Comment
  UC690374  Penstemon roezlii David D. Keck and J. Clausen 1935-6-24 3727 Lassen 5 mi s Likely ((Modoc Co.)); s of Likely 1400 Comment
  NY650123  Penstemon roezlii H. D. D. Ripley 1943-6-13 5671 Lassen South of Constantia 1463.0 Comment
  SEINET5329596 Image available Penstemon roezlii J. T. Howell, Gordon H. True; Wayne Dakan 1974-7-30 50689 Lassen S and SE of Diamond Mt., 2286 Comment
  CAS-BOT-BC239506  Penstemon rydbergii var. oreocharis L. B. Barlow 1967-7-4 89 Lassen 5 mi. south of Eagle Lake Biological Sation on Gallatin Beach Road 1737 Comment
  CHSC37348  Penstemon rydbergii var. oreocharis Cindy Prouty 1978-7-5 14 Lassen E shore of Mohagany L., S of Eagle L. 2060 Comment
  JEPS11475  Penstemon rydbergii var. oreocharis Brown and Wieslander 1922-7-18 50 Lassen Eagle Lake , Eagle Lake (Martin Sprs) Comment
  POM252929  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen Along Hwy 36, 1 mile east of Westwood. 1524 Comment
  UC54980  Penstemon rydbergii var. oreocharis J. B. Davy Lassen Amedee Comment
  UCSB6193  Penstemon rydbergii var. oreocharis Heller, A. 1938-6-23 Lassen East of Westwood 1493 Comment
  HSC81485  Penstemon speciosus Thomas W. Nelson, Jane Nelson 1980-7-6 6018 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  NY660809  Penstemon speciosus N. H. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale. 1680 Comment
  NY661031  Penstemon speciosus J. T. Howell 1934-6-19 11882 Lassen 12 miles north of Susanville on road to Horse Lake Comment
  UC1583941  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen sw slopes of Cold Spring Mtn. 1889 Comment
  CAS-BOT-BC239660  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen 2 miles east of Fredonyer Pass 1645 Comment
  CAS-BOT-BC239663  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36, west of Susanville 1371 Comment
  CAS-BOT-BC243407  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen Slope 2 mile seast of Fredonyer Pass 1645 Comment
  CHSC23482  Penstemon sudans Wayne O. Baum 1971-7-9 71 -86 Lassen E slope of Gallatin Peak. 2072 Comment
  JEPS9321  Penstemon sudans George W. Gillett 1953-7-13 274 Lassen Highway 36, one mi e Fredonyer Pass (Lassen National Forest); , e of Fredonyer Pass 1706 Comment
  NY661796  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass 1615.4 Comment
  NY661797  Penstemon sudans G. W. Gillett 1953-7-13 274 Lassen Fredonyer Pass, Highway 36. One mile east of pass. 1706.9 Comment
  NY661801  Penstemon sudans D. D. Keck 1930-7-23 948 Lassen Susanville 1280.2 Comment
  NY661803  Penstemon sudans N. H. Holmgren 1978-6-12 8937 Lassen Rye Patch Canyon, 4.3 km (2.7 miles) east of U.S. Highway 395, just above Ramhorn Campground, 14.5 km (9 miles) airline distance southeast of Ravendale. 1740 Comment
  NY661808  Penstemon sudans D. D. Keck 1935-6-25 3756 Lassen Susanville; just west of town Comment
  POM82582  Perideridia bolanderi subsp. bolanderi Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA0092314  Perideridia bolanderi subsp. bolanderi Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31422 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  SEINET12121439  Perideridia gairdneri Unknown 1978-1 62 Lassen Papoose Creek ca 1 km S of Gallatin Beach, S end of Eagle L 1585 Comment
  UC1143014  Perideridia oregana August L. Hormay 1934-7-2 Lassen Headquarters Lassen National Forest (1/2 mi n of Black's Mtn.) 1706 Comment
  UC1390003  Perideridia oregana John Weiler 1963-8-2 63236 Lassen along Hwy 299 between Bieber and Nubieber Comment
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  OBI48093  Peritoma platycarpa Rhonda Riggins 1989-4-27 1638 Lassen Wash through volcanic boulder pavement, US395, 8.4 mi N. Litchfield, 26.6 mi S Rav endale 1311 Comment
  CHSC13648  Persicaria amphibia M. S. Taylor 1974-7-10 312 Lassen Abundant in floating masses along w shore of Eagle Lake in vicinity of Grebe Nesting Area, ca. 13 mi nw of Susanville. 1524 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
  JEPS1608  Phacelia adenophora Mrs. C. C. Bruce June 1898 2198 Lassen Madeline Plains Comment
  JEPS25529  Phacelia adenophora Rimo Bacigalupi with Lincoln Constance 1959-6-16 7143 Lassen US Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside road) 1341 Comment
  JEPS79216  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  UC1401312  Phacelia adenophora D. B. Dunn 1956-7-3 11917 Lassen on hwy 395 31 mi ne Johnstonville (n side of flats) Comment
  UCD84588  Phacelia adenophora J. DiTomaso 2010-7-2 s.n. Lassen 15 miles E of Hwy 395 on Smoke Creek Ranch Road. Three miles W of Nevada state line. Comment
  POM230485  Phacelia adenophora D. D. Keck, Jens Clausen 1935-6-24 3736 Lassen 2 miles south of Ravendale. 1463 Comment
  POM98589  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen Madeline Plain. Comment
  RSA715550  Phacelia bicolor L. Ahart, John Dittes 2005-6-1 11886 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  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
  SJSU11244  Phacelia hastata J. W. Tilden 1960-6-27 1499 Lassen foot of Moonlight Rd, outskirts of Westwood 1524 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
  UCD55292  Phacelia heterophylla subsp. virgata Ellen Dean; Gary Schoolcraft 2006-5-16 3113 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  SJSU14069  Phacelia heterophylla subsp. virgata W. Savage 1964-6-30 335 Lassen E of Susanville 1310 Comment
  NY1057846  Phacelia humilis N. H. Holmgren 1980-7-4 9511 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  UC1562814  Phacelia humilis Barbara Ertter with Gary Schoolcraft 1987-6-16 7196 Lassen saddle on e side Hot Springs Peak (ne side of Honey Lake); Skeedaddle Mountains 2194 Comment
  UC24376  Phacelia humilis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC24377  Phacelia humilis Mrs. C. C. Bruce June 1898 2191 Lassen Susanville Antelope hills Comment
  CHSC68891  Phacelia humilis var. humilis Vernon H. Oswald; Lowell Ahart 1997-6-24 8620 Lassen South of susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. 2036 Comment
  RSA427992  Phacelia humilis var. humilis Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC5263  Phacelia imbricata 1944-7-6 Lassen Eagle Lake. Harvey Valley. 1694 Comment
  CHSC48470  Phacelia inundata Vernon Oswald 1986-6-15 2114 Lassen Near Eagle Lake Biological Station. 1584 Comment
  UC735052  Phacelia inundata Lincoln Constance 1946-7-3 3097 Lassen Spauldings Eagle Lake (w edge of lake) 1706 Comment
  UC932054  Phacelia inundata Verne Grant and Alva Grant 1947-9-5 8374 Lassen nw shore Eagle Lake Comment
  CHSC26176  Phacelia linearis J. P. Kroessig 1977-5-23 36 Lassen Eagle Lake Biological Station ca 37 km nnw of Susanville. 1570 Comment
  JEPS2134  Phacelia linearis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen near Chat; Honey Lake Valley Comment
  NY998460  Phacelia linearis W. W. Eggleston 1911-5-29 6721 Lassen Vicinity of Doyle Station 1290 Comment
  UCD150392  Phacelia linearis William Anderson 1963-6-2 s.n. Lassen Eagle Lake. Comment
  NY1056434  Phacelia lutea var. glandulifera N. H. Holmgren 1980-7-3 9473 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  NY1056443  Phacelia lutea var. glandulifera N. H. Holmgren 1978-6-11 8931 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  NY1056439  Phacelia lutea var. glandulifera W. W. Eggleston 1911-7-7 7166 Lassen Secret Valley 1330 Comment
  CHSC111256  Phacelia mutabilis L. P. Janeway; B. Castro 2012-7-3 10939 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  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
  RSA370317  Phacelia tetramera Arnold Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  CAS-BOT-BC179912  Phacelia thermalis Peter H. Raven; Otto T. Solbrig 1958-6-17 13297 Lassen Hwy 395, 4.8 miles south of Madeline Comment
  JEPS79143  Phacelia thermalis L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  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-BC265822  Phalaris arundinacea John Thomas Howell 1974-7-8 50477 Lassen Susanville, Sierra Nevada 1295 Comment
  JEPS28271  Phleum alpinum George W. Gillett 1957-7-29 950 Lassen along trail between Butte Lake and Snag Lake (Lassen Volcanic National Park); , btw Butte Lake and Snag Lake 1859 Comment
  CAS-BOT-BC232852  Phlox David D. Keck; J. Clausen 1935-6-24 3744 Lassen 2 miles S of Ravendale Comment
  UC1537492  Phlox douglasii subsp. rigida Gordon H. True Jr. 1936-6-27 560 Lassen Top of Hot Spring Mountain Hot Spring Mountain 1828 Comment
  JEPS71121  Phlox gracilis Dr. R. H. Loughridge 1912-1 Lassen Madeline Plains Comment
  RSA304681  Phlox hoodii var. canescens Jim Shevock 1971-4-9 944 Lassen Hwy 299, E of Dana. 1067 Comment
  UC1567441  Phlox longifolia G. Schoolcraft 1989-5-16 1878 Lassen w of Rice Canyon Rd. (at base of Antelope Mtn.); Antelope Mtn. 1280 Comment
  UC1924579  Phlox speciosa Debra Valov 2006-5-29 2006031 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1282 Comment
  CHSC6210  Phlox speciosa subsp. occidentalis R. Gein 1946-6-17 Lassen Summit of Mt. Fredonyer. 2421 Comment
  CHSC91202  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2005-6-2 11928 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  OBI76927  Phlox speciosa subsp. occidentalis Anthony Baniaga 2011-6-11 333 Lassen Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21 1623 Comment
  RSA121476  Phoenicaulis cheiranthoides L. R. Short 1936-4-28 S 335 Lassen Burgess Spring Experimental Range. Lassen Forest. 1738 Comment
  UC585228  Phoenicaulis cheiranthoides E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1758 Lassen nw side of summit e of Red Rock 1828 Comment
  CAS-BOT-BC250985  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia Comment
  CAS-BOT-BC58236  Phyllodoce breweri Ella Dales Cantelow 1941-9-13 3599 Lassen Mt. Lassen Nat. Park. Comment
  CHSC5247  Phyllodoce breweri 1946-7-12 Lassen Silver Lake. 1981 Comment
  CHSC6220  Pinus contorta subsp. murrayana P. Balch 1955-7-3 Lassen Eagle Lake Resort. 1615 Comment
  CHSC21478  Pinus monticola M. S. Taylor 1975-7-16 841 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. 2133 Comment
  JEPS46865  Pinus ponderosa G. M. Homans 1914-1-13 Lassen Big Mdws. Comment
  CAS-BOT-BC80047  Pinus washoensis John Thomas Howell 1969-8-7 45886 Lassen Between Butte Lake and Cinder Cone Comment
  UC429180  Piperia unalascensis Franklin P. Nutting Lassen Big Valley Mts., Lassen and Modoc Counties Big Valley Mts. Comment
  POM204143  Plagiobothrys bracteatus J. T. Howell 1934-7-10 12540 Lassen Patterson Flats Comment
  CHSC27607  Plagiobothrys cognatus Nancy Heiken 1978-7-5 79 Lassen S of Eagle Lake at E shore of Mahogany Lake; meadow at lake margin. 2060 Comment
  JEPS28716  Plagiobothrys cognatus George W. Gillett 1957-7-29 954 Lassen Snag Lake Lassen Volcanic National Park (shoreline near e inlet) 1850 Comment
  UC1609179  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5626 Lassen e of Poison Lake (n of Hwy 44 along Rd 33N47 at ne end of Little Harvey Valley, on small branch of Pine Creek, between Champs Flat and Harvey Valley); Little Harvey Valley, Pine Creek 1737 Comment
  UC526162  Plagiobothrys cognatus John Thomas Howell 1934-6-10 11890 Lassen 15 mi. n. Susanville (on rd. to Horse Lake) Comment
  UCD120786  Plagiobothrys cognatus B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  CDA42913  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC106079  Plagiobothrys cusickii Lowell Ahart; John Dittes 2010-7-31 17014 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
  CHSC110891  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC99538  Plagiobothrys cusickii Lowell Ahart; John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS107314  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-1 11906 Lassen Depression on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS117204  Plagiobothrys cusickii Lowell Ahart, John Dittes 2010-7-31 17014 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
  JEPS124383  Plagiobothrys cusickii Lowell Ahart, John Dittes 2015-7-13 20305 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127173  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-15 21212 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0105587  Plagiobothrys cusickii Lowell Ahart, John Dittes 2013-7-22 18870 Lassen 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1601346  Plagiobothrys cusickii J. Burtt Davy Jun 17 1897-Jun 24 1897 3371 Lassen Honey Lake Valley Comment
  CAS-BOT-BC224968  Plagiobothrys hispidulus J. Burtt Davy 1897-6-17 3360 Lassen Adobe Meadows, Honey Lake Valley Comment
  CHSC60334  Plagiobothrys hispidulus Mary Ann Showers 1992-6-12 2530 a Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  UC1025083  Plagiobothrys hispidulus Leo Whitney 1933-8-14 2002 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CAS-BOT-BC224976  Plagiobothrys hispidulus Clarence R. Quick 1962-6-17 62 27 C Lassen Swains Hole, S of Blacks Mountains Experimental Station 1615 Comment
  CHSC106839  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy 44 ca 1 mi E of Shasta Co. line. Flat lodgepole forest S of hwy. 1645 Comment
  JEPS94132  Plagiobothrys leptocladus Vernon H. Oswald and Lowell Ahart 1998-5-22 9099 Lassen ca. 3 mi. n. Doyle (Hackstaff Rd. 1.0 mi. s.of Laver Crossing Rd., 0.2 mi. n. of Fort Sage Rd.) 1316 Comment
  CAS-BOT-BC228462  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen Along edge of Moll Res. W of Ash Valley 1606 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
  CHSC66721  Plagiobothrys mollis var. mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 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
  CHSC115564  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2015-7-13 20319 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
  JEPS124369  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2015-7-13 20319 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0105588  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2013-7-22 18873 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC71079  Plagiobothrys tenellus Vernon H. Oswald; Lowell Ahart 1998-5-22 9093 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  CHSC93662  Plagiobothrys tenellus Lowell Ahart; John Dittes 2005-6-2 11994 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  POM368959  Plagiobothrys tenellus Christopher Davidson 1975-6-7 2766 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA0086588  Plantago Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  RSA0017432  Plantago lanceolata Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  HSC95289  Platanthera dilatata var. leucostachys Gordon Leppig, J. Cromwell 1997-7-26 602 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC4752  Platanthera leucostachys R. Carter 1967-7-14 609 Lassen Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  CHSC67073  Platanthera leucostachys Willis Ball 1969-6-26 41 Lassen Above Gallatin Beach. 1615 Comment
  CHSC107326  Plectritis macrocera Lowell Ahart; John Dittes 2011-6-20 17494 Lassen Meadow, about 30 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC31979  Pleiacanthus spinosus L. Ahart 1974-7-9 547 Lassen Along Hwy 395, 1 mi n of jct of Hwys 395 and 70. 1524 Comment
  HSC79990  Pleiacanthus spinosus William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  JEPS36547  Pleiacanthus spinosus W. L. Jepson 1918-8-2 7790 Lassen Long Valley 1371 Comment
  RSA788671  Pleiacanthus spinosus J. R. Shevock, Barbara Ertter 1986-7-20 11738 Lassen Along U.S. highway 395 at Red Rock Road. 1500 Comment
  UCD92172  Poa A. A. Beetle 1941-6-28 2815 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  SEINET10863882  Poa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17758 Lassen Approx. 12 mi S of Adin on Calif. Hwy 139, in basalt & clay; along edge of road on rolling knoll, in Artemesia_Juniper assoc. 1372 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-BC254942  Poa bulbosa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49187 Lassen Elysian Valley NW of Janesville 1325 Comment
  CHSC108013  Poa bulbosa Lowell Ahart; John Dittes 2011-6-20 17495 Lassen About 40 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC7688  Poa bulbosa Beverley J. Wise 1969-4-28 133 Lassen North city limits of Milford (Hwy 395). 1310 Comment
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC255034  Poa compressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49506 Lassen Elysian Valley, W of Janesville 1325 Comment
  UC1583964  Poa fendleriana subsp. longiligula G. Schoolcraft 1990-5-16 2054 Lassen ca 1 mi w Muck Valley 1280 Comment
  CAS-BOT-BC247322  Poa pratensis David D. Keck 1944-7-8 5448 Lassen 2 mi. E. of Westwood, in wet sod of meadow leading down to Mountain Meadows Reservoir 1524 Comment
  CHSC91319  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  CHSC99523  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
  UC1024691  Poa pratensis subsp. pratensis Leo Whitney 1933-8-2 2154 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen Nat'l Forest 1920 Comment
  RSA101643  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  RSA647529  Poa secunda Marion P. Harthill 1972-6-17 821 Lassen Madeline. 1677 Comment
  SD34480  Poa secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester, mountain meadow 1524 Comment
  CAS-BOT-BC247053  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  CHSC33318  Poa secunda subsp. juncifolia P. Reynolds 1979-7-4 18 Lassen 3 mi. NE of Wendel, Wendel Canyon in the Skedaddle Mtn. Range. 1371 Comment
  CHSC77270  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2350 Lassen About 1.5 miles NE of Red Rock Lake. 2042 Comment
  UC1024804  Poa secunda subsp. juncifolia Leo Whitney 1935-6-23 3289 Lassen Fruit Grower's Supply Company, Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC39628  Poa secunda subsp. juncifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3318 Lassen Honey Lake Valley, De Witt's Honey Lake Valley Comment
  UC718010  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada 1341 Comment
  UCD32654  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2048 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  UCD92381  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen Constantia. Comment
  SEINET7854865  Poa secunda subsp. juncifolia G. Schoolcraft 1995-5-22 2489 Lassen East of Skedaddle Ranch. 1554 Comment
  CAS-BOT-BC236182  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49188 Lassen Elysian Valley NW of Janesville 1325 Comment
  HSC22383  Poa secunda subsp. secunda D. E. Anderson 1969-7-5 4997 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UC127313  Poa secunda subsp. secunda Milo S. Baker Lassen Dixie Valley Comment
  UC1024806  Poa wheeleri Leo Whitney 1935-6-23 3287 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024809  Poa wheeleri Leo Whitney 1935-6-16 3273 Lassen ca 15 mi w Eagle Lake (Crater Lake); Lassen Nat'l Forest 2133 Comment
  UC1136985  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experimental Range; Lassen Forest 1767 Comment
  JEPS112858  Polemonium micranthum Dean Wm. Taylor, Glenn L. Clifton 1992-5-7 12548 B Lassen Eagle Lake Region, Pine Creek, on Forest Road 33N07 ca. 0.8 mile S of Byrgess Flat, 1767 Comment
  SEINET8729406 Image available Polemonium micranthum Unknown 1986-1 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill, T36N, R16E, S35, 5600 ft. 1707 Comment
  CAS-BOT-BC74166  Polyctenium fremontii H. D. Ripley; R. C. Barneby 1944-3-30 5970 Lassen South of Ravendale. 1691 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
  UC188175  Polyctenium fremontii J. G. Lemmon Lassen Eagle Lake and Madeline Plains Comment
  HSC63923  Polyctenium fremontii Teresa Prendusi, M. Meyer 1980-4-30 Lassen Along Hwy. 395, 3 mi. SE of Ravendale 1616 Comment
  SD131676  Polyctenium fremontii Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11703 Lassen 6.6 miles north of the Wendel Road on Highway 395 from Susanville to Alturas. 1349 Comment
  NY1002472  Polygala subspinosa H. D. D. Ripley 1943-6-15 5760 Lassen East of Viewland 1311 Comment
  UC726504  Polygala subspinosa A. A. Heller 1938-6-23 15213 Lassen stony wash s Secret Valley; ; S of Secret Valley, Shasta [=Lassen] Co. Comment
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Oct 19 2007
  UC1537257  Polygonum amphibium var. emersum Gordon H. True 1936-6-22 514 Lassen Honey Lake Valley; deep slough 1219 Comment
  CAS-BOT-BC419766  Polygonum argyrocoleon Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pittville 1219 Comment
  JEPS28662  Polygonum bistortoides George W. Gillett 1957-7-22 882 Lassen Snag Lake Lassen Volcanic National Park (campsite near s end) 1850 Comment
  UC1136193  Polygonum bistortoides A. Simontacchi 1940-5-17 741 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC465777  Polygonum californicum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  RSA518872  Polygonum davisiae Barbara J. Ertter 1988-7-25 7863 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  CAS-BOT-BC414488  Polygonum douglasii W. R. Dudley 1893-6-23 s.n. Lassen Castle Lake Trail, near Mt. Shasta Comment
  CHSC60384  Polygonum douglasii subsp. douglasii Mary Ann Showers 1992-6-12 2528 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  UC1136177  Polygonum douglasii subsp. douglasii E. Sawyer 1935-6-27 215 Lassen Long Valley Sierraville Quadrangle Comment
  HSC100804  Polygonum douglasii subsp. spergulariiforme Lowell Ahart, John Dittes 2010-7-31 16979 Lassen 100 yd. NE of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, 8.4 (air) mi. SE of Adin. 1521 Comment
  JEPS117589  Polygonum douglasii subsp. spergulariiforme 2010-7-31 16979 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1521 Comment
  UC850047  Polygonum douglasii subsp. spergulariiforme M. S. Baker and F. Nutting 1894-1 Lassen Lassen Co. Comment
  RSA0011553  Polygonum esotericum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46999 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  SEINET11933855  Polygonum kelloggii N. H. Holmgren, Holmgren, P. K. 1980-1 9466 Lassen Madeline Plains, along US Hwy 395, 5.6 km S of Madeline, T36N, R13E, S9 1620 Comment
  HSC31370  Polygonum minimum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19243 Lassen About 3 mi. N of Westwood Comment
  UC1603214  Polygonum polygaloides J. Guardino 1993-6-9 281 A Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CAS-BOT-BC419856  Polygonum polygaloides subsp. confertiflorum James Jokerst 1983-7-24 1883 Lassen Near Madeline Plains. 1614 Comment
  CHSC113013  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2013-7-23 18905 Lassen On the northwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC58506  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 1992-7-3 5049 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1 mi N of Cameron Meadow. 1950 Comment
  CHSC78483  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 2000-7-31 9948 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  JEPS120876  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18732 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  UC1258489  Polygonum polygaloides subsp. confertiflorum G. Schoolcraft 1980-7-10 299 Lassen along Rice Canyon Rd in grazing enclosure Bureau of Land Management 1548 Comment
  CHSC27660  Polygonum polygaloides subsp. kelloggii Robert A. Schlising 1978-7-1 3303 Lassen S of Eagle Lake at E side of Mahogany Lake. At moist margin of lake. 2060 Comment
  CAS-BOT-BC420157  Polygonum sawatchense subsp. sawatchense Clarence R. Quick 1961-6-21 61 -18 Lassen Adjacent to Road 21, Blacks Mountain Expermental [Experimental] Forest, northeast of Lassen Peak 1798 Comment
  CDA22787  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. Comment
  RSA122848  Polygonum spergulariiforme L. R. Short 1936-9-30 s 501 Lassen Burgess Spring, Exp Range. 1768 Comment
  CAS-BOT-BC420977  Polygonum spergulariiforme Clarence R. Quick 1964-7-29 64 -87 Lassen Blacks Mt. Experimental Forest 1798 Comment
  UCD100686  Polygonum spergulariiforme J. M. Tucker 1950-7-25 1976 Lassen 33 miles northwest of Susanville, on road from Pittville. Comment
  SEINET10661618  Polypogon monspeliensis Lowell Ahart, John Dittes 2005-6-2 Ahart 11967 Lassen T23N, R17E, southwest 1/4 Section 10. 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
  UCD54545  Populus fremontii subsp. fremontii Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2729 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  CHSC13799  Populus tremuloides Cathy Crittenden 1970-7-9 41 Lassen Antelope lookout. 2316 Comment
  CHSC113811  Porterella carnosula Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18727 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
  CHSC5224  Porterella carnosula R. Gein 1946-6-11 Lassen Near Aspen Grove, Eagle Lake. 1615 Comment
  CHSC60343  Porterella carnosula Mary Ann Showers 1992-6-13 2550 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  UC195849  Porterella carnosula Franklin P. Nutting Lassen flat near Eagle Lake; near Eagle Lake Comment
  SEINET10460820  Porterella carnosula Taylor 1988-6-6 Taylor 9007 Lassen Road from Bieber to Lookout, 0.5 miles south of the Modoc County Line 1250 Comment
  SEINET10460836  Porterella carnosula Rimo Bacigalupi Bacigalupi 6023 Lassen In rich peaty black soil of ditches along U.S. Highway 395, Madeline Plains, 3.1 miles south of Madeline 1615 Comment
  CHSC7716  Portulaca oleracea Beverley J. Wise 1969-6-3 6 Lassen Susanville, 833 Mark St. 1310 Comment
  RSA772320  Potamogeton Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47202 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  RSA772321  Potamogeton diversifolius Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47201 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  POM118853  Potamogeton foliosus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCR196279  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  UCD58790  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  OBI77555  Potamogeton natans Anthony Baniaga 2011-7-23 458 Lassen Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4 1700 Comment
  UC1100072  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-9-6 8380 Lassen n arm of Eagle Lake Comment
  CAS-BOT-BC453914  Potamogeton pectinatus Verne Grant; Irving Schneider 1947-9-6 8380 Lassen North arm of Eagle Lake Comment
  SEINET3893473  Potamogeton pusillus Arnold Tiehm, Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0 1698 Comment
  RSA233761  Potamogeton richardsonii Robert F. Thorne, C. W. Tilforth 1969-9-5 39140 Lassen Said Valley Reservoir. Comment
  RSA327306  Potamogeton richardsonii A. Tiehm, Gary Schoolcraft 1984-8-14 9242 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  CHSC64894  Potentilla basaltica Vernon H. Oswald 1995-6-26 6933 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the w side of the road adjacent to a flat of low sagebrush. 1542 Comment
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 Comment
  UCD113701  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  CDA26098  Potentilla glandulosa T. C. Fuller 1963-7-15 10903 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  UC773876  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spring Experiment Range Lassen National Forest 1767 Comment
  CAS-BOT-BC540369  Potentilla gracilis var. fastigiata B. C. Cain 1925-8-24 76 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CAS-BOT-BC158475  Potentilla gracilis var. gracilis John Thomas Howell 1976-7-19 51948 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CHSC89732  Potentilla millefolia L. P. Janeway 2004-6-26 8160 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 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
  CHSC66401  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1996-6-17 7787 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  CHSC117197  Poterium sanguisorba Lowell Ahart; John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC5273  Prunella vulgaris var. lanceolata M. West 1946-7-7 Lassen Eagle Lake. Butte Creek. Comment
  POM70071  Prunella vulgaris var. lanceolata Marcus E. Jones 1897-7-25 s.n. Lassen Susanville. 1341 Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  SJSU8180  Prunus andersonii M. D. Fleschner 1965-7-12 Lassen 2 mi SE of Milford near Honey L 1249 Comment
  HSC25730  Prunus virginiana var. demissa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19164 Lassen 3 mi. N of Westwood Comment
  RSA59556  Prunus virginiana var. melanocarpa E. K. Balls 1950-5-22 14827 Lassen 1.8 miles SE of Buntingville. W of Honey Lake, Hwy 395. 1280 Comment
  CHSC13511  Pseudognaphalium thermale J. Pitts 1972-6-29 293 Lassen 3 mi se of Five Points on e side of road. Comment
  CAS-BOT-BC239801  Pseudoroegneria spicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50693 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC239804  Pseudoroegneria spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi. W. of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  UCD91507  Pseudoroegneria spicata Beecher Crampton 1964-6-27 7089 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  UC1483808  Pseudoroegneria spicata subsp. spicata P. Bousier May 1979 Lassen n of Wendel (ner Brubeck Spring) 1554 Comment
  UC188856  Pseudoroegneria spicata subsp. spicata Milo S. Baker Lassen s side of Dixie Valley Dixie Valley Comment
  CAS-BOT-BC80092  Pseudotsuga menziesii John Thomas Howell 1976-7-19 51965 Lassen on Gold Run Creek southwest of Susanville 1386 Comment
  SEINET5345381  Pseudotsuga menziesii var. menziesii D. A. Charlet 1996-7-8 2290 Lassen Diamond Mts; Sierra Nevada Janesville Grade, just within National Forest boundary, Great Basin drainage (Honey Lake) 1855 Comment
  JEPS96091  Psilocarphus oregonus Vernon H. Oswald and Lowell Ahart 1996-6-17 7794 Lassen Devils Corral Trailhead Modoc Plateau (shallow ditch just sw of parking area, located off Hwy 36 ca. 7 mi w, trailhead is access to Bizz Johnson Trail) 1420 Comment
  CHSC99273  Psilocarphus tenellus var. tenellus Lowell Ahart; John Dittes 2008-6-22 15029 Lassen About 120 yards west of the road levee, on the bottom of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS114630  Psilocarphus tenellus var. tenellus Lowell Ahart, John Dittes 2008-6-22 15029 Lassen About 120 yards west of the road levee, on the bottom of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  CHSC80646  Psoralidium lanceolatum Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10040 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  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
  UC773902  Pterospora andromedea L. R. Short and D. Gish 1936-7-15 S 488 Lassen Burgess Spring Experiment Range 1813 Comment
  CAS-BOT-BC453500  Pterospora andromedea John Thomas Howell; Gordon H. True 1973-7-31 50024 Lassen Sierra Nevada, on road from Janesville to Thompso Peak, Diamond Range 1737 Comment
  HSC68918  Pterospora andromedea Gary Schoolcraft 1980-7-28 339 Lassen N of Clark's Valley 2073 Comment
  CDA32666  Puccinellia lemmonii Gary Schoolcraft 2000-6-19 2906 Lassen Flat southeast of Ravendale BLM Fire Station. 0 Comment
  SEINET4890224  Puccinellia lemmonii N. H. Holmgren, P. Holmgren 1978-6-13 8939 Lassen 2.7 km (1.7mi) north-west of Wendel. 1250 Comment
  UCR244041  Puccinellia nuttalliana Jim Andre 1993-6-1 19711 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-BC147815  Purshia tridentata var. tridentata D. B. Dunn; B. J. Cox 1971-6-2 17784 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 1402 Comment
  CAS-BOT-BC147821  Purshia tridentata var. tridentata Alice Eastwood; John Thomas Howell 1940-6-16 8341 Lassen Janesville Comment
  CAS-BOT-BC147824  Purshia tridentata var. tridentata M. S. Taylor 1982-5-7 4431 Lassen Reno Junction on Hwy 70, just e of Beckwourth Pass 1524 Comment
  JEPS44640  Purshia tridentata var. tridentata Frank W. Peirson 1932-7-20 10355 Lassen 20 mi se Susanville Comment
  RSA60361  Purshia tridentata var. tridentata E. K. Balls 1950-5-9 15946 Lassen 6 miles S of Doyle, Hwy 395 1372 Comment
  RSA647526  Purshia tridentata var. tridentata Marion P. Harthill 1972-6-17 814 Lassen Ravendale 1768 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
  UC12421  Purshia tridentata var. tridentata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. Comment
  UC467830  Purshia tridentata var. tridentata Franklin P. Nutting Lassen Pine Creek Comment
  RSA0080608  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin's Ranch. 1829 Comment
  CAS-BOT-BC466052  Pyrola picta Louella Bass 1973-6-23 EU 129 Lassen Elysian Valley 1325 Comment
  UCD18973  Pyrola picta Raymond D. Ratliff 1965-7-29 35 Lassen Lassen National Forest, Harvey Valley and Champ's Flat Allotments (HV 19-13, CF 19-6). 1706 Comment
  CHSC58834  Pyrrocoma hirta var. lanulosa Vernon H. Oswald; Lowell Ahart 1992-7-16 5129 Lassen Feather Lake on the S side of Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), ca. 0.4 mi E of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02), between Old Station and Susanville. On the margin of the lake. 1749 Comment
  UC1143034  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1783 Comment
  RSA715949  Pyrrocoma lucida L. P. Janeway 2005-7-31 8512 Lassen Northern High Sierra Nevada. Diamond Mountains; Head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  CAS-BOT-BC362319  Pyrrocoma racemosa var. paniculata John Thomas Howell 1951-8-20 28227 Lassen Honey Lake Valley near Herlong 1280 Comment
  CAS-BOT-BC362320  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee, Honey Lake Valley Comment
  CAS-BOT-BC105247  Quercus kelloggii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49159 Lassen Elysian Valley NW of Janesville 1325 Comment
  CHSC25909  Ranunculus K. R. Stern 1967-6-25 2434 Lassen Meadow on road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  CAS-BOT-BC379463  Ranunculus alismifolius Louella Bass 1973-4-16 18 Lassen Elysian 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
  UC1609182  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-5-12 5380 Lassen canal crossing Hwy 44 3.5 mi nw A21 (to Westwood) (n side of road and e side of canal) 1729 Comment
  HSC18114  Ranunculus alismifolius var. hartwegii R. J. Vernimen 1963-5-4 49 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
  CHSC8743  Ranunculus aquatilis var. capillaceus S. Chulasmai 1966-5-13 35 Lassen Vernal pool, (Johnstonville). Comment
  CHSC112752  Ranunculus aquatilis var. diffusus Lowell Ahart; John Dittes 2013-7-23 18891 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
  CHSC65319  Ranunculus aquatilis var. diffusus Vernon H. Oswald; Lowell Ahart 1995-8-14 7185 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. In roadside pond. 1645 Comment
  JEPS77523  Ranunculus aquatilis var. hispidulus L. R. Heckard, T. I. Chuang and R. Bacigalupi 1978-7-20 4893 Lassen junction of Blue Lake turn-off with Likely-Patterson Guard Station road; Warner Mts. 1889 Comment
  SEINET10536136  Ranunculus cymbalaria Mary Susan Taylor 1974-1 Taylor 268 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1745660  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  HSC23500  Ranunculus cymbalaria var. saximontanus Bill Wilson 1967-6-30 59 Lassen Slough Point, 2 mi. W across lake from Eagle Lake Biological Station, 10 mi. N of Susanville 1585 Comment
  JEPS28454  Ranunculus flammula George W. Gillett 1957-7-22 872 Lassen Snag Lake Lassen Volcanic National Park (s shore) 1850 Comment
  SEINET10535979  Ranunculus occidentalis Mary Merello 1993-6-28 Merello 749 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1126218  Ranunculus occidentalis K. E. Bradshaw 1939-5-27 242 Lassen Black Mountain Experimental Forest Lassen National Forest, Halls Flat Quadrangle (Plot 39-4) Comment
  UC1137287  Ranunculus occidentalis K. E. Bradshaw 1939-5-27 242 Lassen near S. end of Black Mountain Experimental Forest Plot 39-4; Lassen National Forest, Halls Flat Quadrangle 1737 Comment
  UC1924564  Ranunculus occidentalis Debra Valov 2006-5-30 2006036 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UC69597  Ranunculus occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3379 Lassen Honey Lake Valley Comment
  UC1191443  Ranunculus sceleratus Malcolm A. Nobs and S. Galen Smith 1949-7-21 1050 Lassen marshy creek ca 1 mi e Madeline Comment
  JEPS127178  Rhaponticum repens Lowell Ahart, John Dittes 2016-7-15 21229 Lassen 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
  UC1587100  Rhaponticum repens G. Schoolcraft 1991-7-31 2203 Lassen just n of Hall Spring; Shinn Mts. 1706 Comment
  CHSC7759  Ribes aureum Beverley J. Wise 1969-5-4 101 Lassen 0.5 mi. south on Las. Co. Rd. 305 off junction of Hwy 395. 1249 Comment
  UC1136910  Ribes cereum L. R. Short and Wm. Gansberg 1936-6-16 S- 439 Lassen Burgess Spr. Exp. Range Lassen Forest 1880 Comment
  CHSC86948  Ribes cereum var. cereum L. P. Janeway 2001-6-19 7188 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
  CAS-BOT-BC169008  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  UC11723  Ribes inerme var. inerme M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC75460  Ribes inerme var. inerme Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  CAS-BOT-BC212579  Ribes montigenum Alice Eastwood 1912-8-22 1863 Lassen Trail from Morgan Springs to Lassen Butte Comment
  SEINET10482953  Ribes roezlii Mary Susan Taylor 1974-5-4 Taylor 229 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  HSC20364  Ribes velutinum L. H. Myers 1963-4-6 37 Lassen 1.0 mi. S of Janesville 1280 Comment
  JEPS49252  Ribes velutinum W. L. Jepson 1918-8-5 7820 Lassen near South Fork Peak 1463 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
  UCR17277  Ribes velutinum Frank C. Vasek 1975-7-11 750711- 29 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  SEINET10482959  Ribes velutinum Mary Susan Taylor 1974-1 Taylor 288 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC23568  Ribes viscosissimum W. O. Baum 1971-6-21 32 Lassen E slope on fire trail on Gallatin Peak. 1920 Comment
  HSC82187  Rigiopappus leptocladus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6036 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS29198  Rigiopappus leptocladus Lauramay T. Dempster 1961-6-17 1672 Lassen Gold Run Creek about 4 mi sw of junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  UC485203  Rigiopappus leptocladus Franklin P. Nutting Lassen Dixie Valley Comment
  CAS-BOT-BC363008  Rigiopappus leptocladus unspecified 1940-5-31 s.n. Lassen E. of McArthur Comment
  CAS-BOT-BC74531  Rorippa curvisiliqua John Thomas Howell; Gordon H. True 1973-8-1 50243 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2133 Comment
  CHSC75479  Rorippa curvisiliqua var. curvisiliqua Vernon H. Oswald; Lowell Ahart 1999-6-9 9758 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. On a meadow adjacent to the highway. 1645 Comment
  CHSC13796  Rorippa nasturtium-aquaticum Cathy Crittenden 1970-7-8 31 Lassen Lower Murrer's Meadow; by Willow Creek. 1463 Comment
  CHSC5023  Rorippa nasturtium-aquaticum L. G. Bennett 1967-6-24 45 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  UC1536933  Rorippa nasturtium-aquaticum Gordon H. True Jr. 1936-6-26 547 Lassen e Eagle Lake (head of Willow Creek); , e of Eagle Lake 1584 Comment
  NY182160  Rorippa sinuata G. Schoolcraft 1989-6-6 1901 Lassen North end of Secret Valley west of Hwy. 395. 1350.3 Comment
  CHSC89759  Rosa californica L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  RSA702446  Rosa californica L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat. Black Mountains Experimental Forest. 1790 Comment
  CHSC66400  Rosa woodsii subsp. ultramontana Vernon H. Oswald; Lowell Ahart 1996-6-17 7773 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  UC75495  Rosa woodsii subsp. ultramontana Milo S. Baker 1898-1 Lassen Vicker's Comment
  CAS-BOT-BC148257  Rosa woodsii var. ultramontana George W. Gillett 1957-7-26 915 Lassen Butte Lake - Lassen Volcanic National Park 1844 Comment
  CAS-BOT-BC148391  Rubus leucodermis John Thomas Howell; Gordon H. True 1973-8-1 50248 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1950 Comment
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC25904  Rumex K. R. Stern 1967-6-30 2445 Lassen West central side of Eagle Lake. 1554 Comment
  JEPS117592  Rumex acetosella 2010-7-31 17001 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  RSA768027  Rumex acetosella L. Ahart, John Dittes 2010-7-31 17001 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  CAS-BOT-BC421954  Rumex acetosella Margaret Williams; Louella Bass 1972-10-22 EV 5 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  SEINET10479394  Rumex acetosella Jeffrey Huber 1971-6-11 Huber 319 Lassen 3 mi E of Westwood, on CA Hwy 36; in volcanic soils (basalt), in Pinus jeffreyi. 1608 Comment
  HSC95219  Rumex crispus Gordon Leppig 1998-7-12 962 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  NY324109  Rumex lacustris M. S. Baker 1894-1 s.n. Lassen Silver Lake [according to annotation by Rech. f.] Comment
  UC748316  Rumex maritimus Annie M. Alexander and Louise Kellogg 1946-8-11 5154 A Lassen nw end Eagle Lake (Sam Webb's Hunting Cabins) Comment
  UC465818  Rumex occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee Honey Lake Valley Comment
  UC1036081  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5154 Lassen nw end Eagle Lake (Sam Webb's Hunting Cabins) Comment
  UC6952 Image available Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake; ; Silver Lake, Lassen Co. Comment
  CHSC58852  Rumex salicifolius var. triangulivalvis Vernon H. Oswald; Lowell Ahart 1992-7-16 5123 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. Common on drier parts of a marshy meadow. 1719 Comment
  CAS-BOT-BC434263  Rumex triangulivalvis Annie M. Alexander; Louise Kellogg 1946-8-11 5153 Lassen Northwest end Grasshopper Valley. Comment
  HSC29859  Rumex venosus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19300 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CHSC66737  Sagittaria cuneata Vernon H. Oswald; Lowell Ahart 1996-8-1 8107 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  CAS-BOT-BC332741  Sagittaria cuneata R. F. Thorne; Larry E. DeBuhr 1975-8-22 46992 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  CHSC61243  Sagittaria latifolia P. V. Caldwell 1972-6-23 246 Lassen Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow. Comment
  NY188399  Salix eriocephala subsp. mackenzieana R. D. Dorn 1972-6-2 1492 Lassen Willow Creek, about 15 miles SSE of Adin 1524.0 Comment
  CHSC99285  Salix exigua Lowell Ahart; John Dittes 2008-6-22 15043 Lassen On the bottom of a deep ditch, on the south side of the road levee, open meadow area, 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. Comment
  RSA715622  Salix exigua L. Ahart, John Dittes 2005-6-1 11905 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  SEINET3260826  Salix exigua Marcus E. Jones 1897-6-25 Lassen Susanville. 1340 Comment
  CAS-BOT-BC107961  Salix geyeriana John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49220 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  NY430479  Salix laevigata G. Schoolcraft 1994-8-2 2413 Lassen About 1.5 miles southwest of Boot Lake 2011.7 Comment
  CAS-BOT-BC128175  Salix lasiandra var. lasiandra G. Schoolcraft 1999-5-7 2822 Lassen Susanville 1371 Comment
  CAS-BOT-BC106964  Salix lasiolepis G. Schoolcraft 1999-5-7 2820 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  CHSC60767  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1993-6-3 5489 Lassen Bridge Creek Spring Rd. (Lassen 112, Forest 31N06), at Bridge Creek, N of Hwy 44 between Poison Lake and Susanville. 1746 Comment
  POM209557  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 683 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  UC1609475  Salix lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-3 5489 Lassen n. of Hwy. 44 between Poison Lake and Susanville (Bridge Creek Spring Rd. (Lassen 112, Forest 31N06) at Bridge Creek, s. edge of rd.) 1746 Comment
  CAS-BOT-BC124635  Salix lemmonii Hans Leschke 1960-8-9 1744 Lassen Manzanita Lake 1781 Comment
  NY187800  Salix lucida subsp. caudata J. T. Howell 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville 1325.9 Comment
  CHSC66405  Salix scouleriana Vernon H. Oswald; Lowell Ahart 1996-6-17 7770 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Ca. 2 mi E of the 7 mile post. 1432 Comment
  CHSC76096  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-9-13 8205 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  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
  CHSC12422  Sambucus mexicana Anne Linda Brisk 1969-6-26 28 Lassen 7.2 mi SW of ELBS on Road 4.25. 1584 Comment
  CHSC26166  Sambucus mexicana Detzer; M. Sacks 1977-7-15 5 Lassen Ca. 3.5 mi SE of Milford, 1 mi SE of Laufman Rngr. Stn. on unimproved USFS road. 1420 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
  POM90118  Sanguisorba annua Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 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
  UC1409833  Sanicula tuberosa K. Morris, Dunn and Conrad 1973-5-25 242 Lassen 7.6 mi nw of Junction of Hwy 36 and 44 on Highway 44 Highway 44 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
  RSA79261  Sarcobatus vermiculatus E. K. Balls 1952-10-10 18136 Lassen 5.2 miles W of Standish, Hwy 395, Susanville to Alturas. 1250 Comment
  CAS-BOT-BC466320  Sarcodes sanguinea R. Carter 1967-6-22 536 Lassen 1/4 mi S of Corners on Peans Ridge Rd., on way to Mahogany Lake 1950 Comment
  CAS-BOT-BC283085  Schedonorus arundinaceus John Thomas Howell; Gordon H. True 1973-8-1 50185 Lassen Gold Run Creek Road south of Susanville, Diamond Range, Sierra Nevada 1584 Comment
  RSA300132  Schedonorus arundinaceus J. T. Howell, Gordon H. True 1973-8-1 50185 Lassen Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  CAS-BOT-BC111302  Schoenoplectus acutus var. occidentalis R. F. Thorne; C. W. Tilforth 1969-9-6 39256 Lassen Sandy flats along Long Valley Creek c. 14 mi SE of Milford. Comment
  UC1567432  Schoenoplectus acutus var. occidentalis G. Schoolcraft 1989-7-31 1998 Lassen along A27 about 8 mi e Susanville; e of Susanville 1243 Comment
  POM123064  Schoenoplectus maritimus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  RSA252443  Schoenoplectus pungens Robert F. Thorne, C. W. Tilforth 1969-9-6 39257 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  UC2119  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3291 Lassen beside sloughs Honey Lake Valley, beside sloughs Tule Confederacy (Tule Confederacy, Honey Lake Valley) Comment
  JEPS87446  Scirpus nevadensis Vernon H. Oswald and Lowell Ahart 1993-6-14 5521 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake 1566 Comment
  CDA39106  Scirpus pungens T. C. Fuller 1964-10-8 12708 Lassen Wendel Hot Springs, ca. 1 mile west of Wendel. 0 Comment
  JEPS11413  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  CAS-BOT-BC383106  Scrophularia lanceolata Andrew Townesmith; Karen M. Meyer 2007-7-20 837 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  RSA165466  Scrophularia lanceolata Clare B. Hardham 1961-6-17 7531 a Lassen Rte 395 Alturas Susanville Road 1524 Comment
  CAS-BOT-BC214267  Scutellaria nana Peter H. Raven; Otto T. Solbrig 1958-6-17 13270 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  HSC82199  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6054 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  POM252832  Scutellaria nana A. A. Heller 1938-6-23 15186 Lassen 1 mile south of Westwood. 1524 Comment
  RSA719468  Scutellaria nana L. P. Janeway 2005-4-7 84614 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 534 Comment
  UC1537581  Scutellaria nana Gordon H. True Jr. 1936-6-25 540 Lassen e of Harvey Valley Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  UC1549237  Scutellaria nana Richard Olmstead 1984-6-27 586 Lassen turnoff 14 mi s of Ravendale (12.2 mi e of US 395, Rye Patch Canyon Road); Rye Patch Canyon Road 1566 Comment
  UC1609093  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-7-8 5653 Lassen on se edge of Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi n of Hwy 44) 1709 Comment
  UC1609176  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-6-28 5595 Lassen e of Poison Lake (Harvey Valley Rd. (33N02), 2.0 mi n of Hwy 44, between Grays Valley and Harvey Valley); Harvey Valley Rd. 1734 Comment
  UC790980  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi s of Ravendale (Observation Peak); Observation Peak Comment
  SEINET10517203  Secale cereale Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 887 Lassen Collected 3 mi N of Milford. On Hwy 395 at Honey Lake Campgrounds. Comment
  CDA34518  Senecio aronicoides B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  CHSC106074  Senecio canus Lowell Ahart; John Dittes 2010-7-31 16990 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC108003  Senecio hydrophiloides Lowell Ahart; John Dittes 2011-6-20 17503 Lassen About 10 yards west of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC2027206  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen National Forest. Southern McCoy Flat. Spalding Tract quandrangle Comment
  CHSC58836  Senecio hydrophilus Vernon H. Oswald; Lowell Ahart 1992-7-16 5128 Lassen Feather Lake on the S side of Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), ca. 0.4 mi E of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02), between Old Station and Susanville. On the margin of the lake. 1749 Comment
  CHSC99108  Senecio hydrophilus Lowell Ahart; John Dittes 2008-6-20 14907 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC30613  Senecio integerrimus L. Maslin 1975-7-1 10 Lassen At the foothill of n Black Mtn. near Eagle Lake Field Station. 1981 Comment
  SEINET10799222  Senecio integerrimus Paul Gallian, David B. Dunn 1971-6-2 Gallian 504 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC23517  Senecio integerrimus var. exaltatus Wayne O. Baum 1971-6-28 71 -18 Lassen E. slope of Gallatin Peak. 1920 Comment
  CHSC60723  Senecio integerrimus var. exaltatus Vernon H. Oswald; Lowell Ahart 1993-6-3 5480 Lassen Champs Flat Rd. (Lassen 105, 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake, on the S side of Pine Creek Valley, between Poison Lake and Susanville. Meadow. 1725 Comment
  CAS-BOT-BC341186  Senecio lugens John Thomas Howell 1934-6-14 12159 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
  RSA518886  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  CAS-BOT-BC216251  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen On the south slope of the Rush Creek drainage, 0.3 km. south of the Smoke Creek Ranch Road, 2 km. west of teh stateline Comment
  CDA36706  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen Along a bench on the south slope of the Rush Creek Drainage, 0.3 km south of the Smoke Creek Ranch Road, 2 km west of the stateline. 0 Comment
  HSC100806  Sidalcea glaucescens Lowell Ahart, John Dittes 2010-7-31 17016 Lassen S side of road, ~50 yd. E of culvert, where road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1516 Comment
  UC1143016  Sidalcea glaucescens August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn; Lassen National Forest, nw of Black's Mtn 1706 Comment
  CAS-BOT-BC205779  Sidalcea oregana B. Bartholomew; B. Anderson 1988-7-22 4506 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  HSC82270  Sidalcea oregana subsp. oregana Thomas W. Nelson, Jane Nelson 1980-7-6 5996 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM230480  Sidalcea oregana subsp. oregana D. D. Keck, Jens Clausen 1935-6-24 3740 Lassen 2 miles S. of Ravendale, Comment
  POM260336  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  POM84772  Sidalcea oregana subsp. spicata Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA31660  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 2 miles E of Westwood. 1524 Comment
  UC1553380  Sidalcea oregana subsp. spicata G. Schoolcraft 1988-7-7 1820 Lassen at Painter Creek and Horne Ranch Rd. crossing 1645 Comment
  NY54618  Sidalcea oregana var. maxima N. H. Holmgren 1980-7-3 9479 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. highway 395, 16 km (10 mi) airline distance northwest of Termo 1620 Comment
  SEINET9005527  Sidalcea oregana var. spicata C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  JEPS28445  Silene bernardina George W. Gillett 1957-7-24 896 Lassen dry flats between Cameron Meadow and Snag Lake (Lassen Volcanic National Park); , btw Cameron Mdw and Snag Lake 1950 Comment
  UC1125817  Silene bernardina A. Simontacchi 1940-7-3 928 Lassen 2.3 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1844 Comment
  CAS-BOT-BC136278  Silene douglasii A. R. Kruckberg 1951-9-2 2899 Lassen across road from Lake Helen, Lassen N.P. 2743 Comment
  CHSC54863  Silene invisa Vernon H. Oswald 1991-8-23 4844 Lassen Lassen Volcanic National Park. Trail from Juniper Lake Campground to the outlet of Juniper Lake, just west of the former. 2060 Comment
  UC311415  Silene lemmonii Marcus E. Jones, A. M. 1897-6-28 Lassen Perkin's Ranch Diamond Mt., , Perkin's Ranch (Susanville) 1828 Comment
  CHSC65097  Silene menziesii Vernon H. Oswald; Lowell Ahart 1995-7-24 7137 Lassen High Cascade Range. Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. At the NE corner of the impoundment on Pine Creek. 1905 Comment
  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
  SJSU5887  Silene menziesii H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CHSC115594  Silene nuda Lowell Ahart; John Dittes 2015-7-14 20334 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  HSC4227  Silene verecunda Fred J. Kindel 1955-7-9 Lassen Susan River Comment
  RSA719894  Sisymbrium altissimum Michael A. Vincent, K. Levings 2006-7-29 12909 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CHSC99110  Sisyrinchium bellum Lowell Ahart; John Dittes 2008-6-20 14964 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0035823  Sisyrinchium bellum Lowell A. Ahart, John Dittes 2008-6-20 14964 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC7681  Sisyrinchium douglasii Beverley J. Wise 1969-4-21 137 Lassen 2.6 mi. south of Susanville on the old dump road. 1341 Comment
  UC21380  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  CDA38568  Sium suave T. C. Fuller 1959-7-7 4732 Lassen Highway 395, 7.5 miles east of Susanville. 0 Comment
  UCD128140  Sium suave J. M. Tucker 1950-7-25 1973 Lassen 0.5 mile southwest of Bieber. Comment
  CHSC65362  Solanum triflorum Vernon H. Oswald; Lowell Ahart 1995-8-14 7176 Lassen Modoc Plateau. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  UC1191779  Solanum triflorum Verne Grant, Irving Schneider 1947-8-1 8234 Lassen east end of Tule Lake Tule Lake Comment
  CAS-BOT-BC364906  Solidago velutina subsp. californica Clare B. Hardham 1969-8-28 17437 Lassen Slope west of Janesville Comment
  UC1776708  Solidago velutina subsp. sparsiflora G. Schoolcraft 1994-8-3 2416 Lassen About 1 mile S of Boot Lake 1889 Comment
  CHSC113057  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2013-7-22 18846 Lassen West margin of a duck field, about 50 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116096  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2015-7-13 20304 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
  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
  CDA37488  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  POM82495  Sphenosciadium capitellatum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC13098  Spiraea densiflora M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  HSC95184  Spiranthes porrifolia Gordon Leppig 1998-8-17 1038 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC845562  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen meadow about 1 mi e Westwood 1524 Comment
  JEPS128405  Stachys rigida Catherine Bauer with Ellen Bauer Benson 2017-8-16 12 Lassen South of Highway 44, North of Butte Lake, between Butte Creek and access road into Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CHSC75482  Stanleya viridiflora Vernon H. Oswald; Lowell Ahart 1999-6-9 9744 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
  UCD99328  Stellaria longipes subsp. longipes Ratliff 1966-7-8 1 Lassen Harvey Valley Allot. - Plot 49. 1706 Comment
  CHSC4785  Stellaria longipes var. longipes R. Carter 1967-6-29 574 Lassen In Murrer's Meadow, 100 yds. SE of dam. Comment
  CHSC4946  Stellaria longipes var. longipes R. Carter 1967-6-23 550 Lassen In meadow, 25 yds w of dam in Murrer's Meadow. 1584 Comment
  JEPS107846  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2005-6-2 11992 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  RSA0049620  Stenotus lanuginosus var. lanuginosus Dean Wm. Taylor 2012-5-16 21201 Lassen ca. 1 air mile S of Stanford Camp (ca. 3 air mi SSE of Big Jack Lake) 1920 Comment
  JEPS17401  Stephanomeria exigua subsp. exigua Rimo Bacigalupi and G. T. Robbins 1955-7-21 5425 Lassen In drainage of Rush Creek, S of the Smoke Creek Ranch Road, 1.3 mi E of the Nevada State line and 17.5 mi E of U.S. Highway 395. 1341 Comment
  UC74066  Stephanomeria exigua subsp. exigua J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC322911  Stephanomeria tenuifolia Clare B. Hardham 1969-8-28 17429 Lassen West of Janesville, Sierra Nevada Comment
  HSC22318  Stipa nelsonii subsp. dorei D. E. Anderson 1969-7-5 4992 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  OBI22293  Stipa webberi Robert F. Hoover 1940-9-29 4647 Lassen Pass between Shaffer Mt and Warren Peak Comment
  UCD149957  Stuckenia filiformis subsp. alpina William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  SEINET958426  Stuckenia pectinata Verne Grant, Irving Schneider 1947-1 8184 Lassen East side of Tule Lake. Comment
  POM102724  Suaeda moquinii Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  UC7240  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3325 Lassen Honey Lake Valley 1828 Comment
  CHSC63602  Subularia aquatica var. americana Vernon H. Oswald; John Ost, Mary Lou Mini 1994-8-6 6447 Lassen Caribou Wilderness along the west loop of the trail from the Hay Meadow to Long Lake. On the margin of a pond. 2065 Comment
  CHSC105255  Swertia albicaulis var. albicaulis Lowell Ahart; John Dittes 2010-7-31 16987 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
  JEPS114622  Swertia albicaulis var. albicaulis Lowell Ahart, John Dittes 2008-6-19 14881 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC1609461  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (at Aspen Well, n of Hwy 44, on the nw edge of Harvey Valley) 1725 Comment
  SD211535  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen circa 3/4 mile East-Northeast of Beckwourth Pass at end of old crumbling paved road 1524 Comment
  UC1949147  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment
  CHSC72216  Symphyotrichum campestre Vernon H. Oswald 1998-9-14 9623 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  UC1192209  Symphyotrichum campestre Verne Grant and Irving Schneider 1947-7-31 8210 Lassen ne quater of George Williams section 19 Madeline Plain Comment
  UCD107503  Symphyotrichum foliaceum Tim Kuhn 2006-7-18 49 Lassen Eagle Lake Ranger District. Comment
  JEPS95902  Symphyotrich