Search Results — 2000 specimen records retrieved (1593 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA19039  Abies concolor Mark Lubinski 2000-10-12 PDR 070105 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36. 0 Comment
  CHSC84856  Abies concolor L. P. Janeway; B. Castro 2003-10-5 8002 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  CAS-BOT-BC331636  Acer macrophyllum Louella Bass 1973-5-29 EU 51 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC28648  Achillea millefolium Louella Bass 1973-5-29 72 Lassen Elysian Valley 1325 Comment
  CHSC12493  Achillea millefolium Carol Weld 1969-6-20 20 Lassen Dean's Meadow. 1950 Comment
  CHSC5191  Achillea millefolium J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek, Eagle Lake, Lassen Co., California. 1580 Comment
  CHSC60271  Achillea millefolium P. V. Caldwell 1972-6-23 245 Lassen Headwaters of Willow Creek, Upper Murer's Meadow. Comment
  JEPS36915  Achillea millefolium Brown and Wieslander 1922-7-30 18 Lassen meadow near Martin Springs; Eagle Lake Comment
  UC1125421  Achillea millefolium A. Simontacchi 1940-6-13 826 Lassen 3.3 mi wsw Patterson Mtn.; Halls Flat Quad. 1752 Comment
  UCD51450  Achnatherum X bloomeri Howard Gebel 1966-6-14 s.n. Lassen Belfast tableland. 1341 Comment
  CAS-BOT-BC260400  Achnatherum hymenoides Margaret Williams; Steven Williams 1974-7-26 74 -L-1 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  CAS-BOT-BC260402  Achnatherum hymenoides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16335 Lassen 13.5 miles E of Susanville Comment
  CHSC60791  Achnatherum hymenoides Vernon H. Oswald; Lowell Ahart 1993-6-14 5544 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89) 1566 Comment
  RSA716057  Achnatherum hymenoides L. Ahart, John Dittes 2005-6-2 11996 Lassen Long Valley, about 41/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1428 Comment
  RSA152596  Achnatherum hymenoides I. L. Wiggins, Dorothy Wiggins 1961-6-11 16335 Lassen 13.5 miles east of Susanville. Comment
  SEINET249775 Image available Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UCD50509  Achnatherum lemmonii R. Tofsrud 1947-7-1 243 Lassen Between Bieber and Nubieber. Comment
  UCD18959  Achnatherum nelsonii Jack N. Reppert 1965-7-13 17 Lassen Lassen National Forest, Harvey Valley Allotment (HV-17). 1682 Comment
  SBBG115546  Achnatherum nevadense B. Crampton 1960-6-18 5729 Lassen S Warner Mts, ca. 1.25 mi N of Blue Lake, in vicinity of Blue Lake Ranch 1981 Comment
  UCD50888  Achnatherum occidentale Beecher Crampton 1960-6-20 5733 Lassen 1/2 mile south Black's Mtn. Exper. Station, USDA Forest Service, 11 miles north Bogard Ranger Station, Lassen National Forest. 1706 Comment
  UC1024688  Achnatherum occidentale subsp. occidentale Leo Whitney 1933-7-15 2157 Lassen 16 mi w of upper end of Eagle Lake; Lassen National Forest, Harvey Montain Comment
  UC1133257  Achnatherum occidentale subsp. occidentale H. P. Hagge 1929-9-17 38 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC506985  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F- 215 Lassen Lassen Forest 1706 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
  UC1153871  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2066 Lassen 5.5 mi w, along State Hwy. 36 Susanville (volcanic rubble under pine) 1447 Comment
  JEPS114857  Achnatherum thurberianum Lowell Ahart, John Dittes 2008-6-19 14870 Lassen about 100 yds E of Willow Creek, about 120 yds NE of Hwy 139, near Forest Road 36N02, about 19.6 mi E-SE of Bieber 1578 Comment
  UC1026712  Achnatherum thurberianum Leo Whitney 1935-6-25 3311 Lassen 13 mi w of upper end Eagle Lake; Ashurst Mountain Comment
  UCD51441  Achnatherum thurberianum L. Whitney 1935-6-19 3258 Lassen Ashurst Mountain, 13 miles west of upper end of Eagle Lake, Lassen National Forest. 1584 Comment
  CAS-BOT-BC217991  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  CHSC105251  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2010-7-31 16999 Lassen On the north side of the road, about 15 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
  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
  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
  UC1220355  Adonis aestivalis J. R. Sweeney 1962-6-5 2653 Lassen 1/2 mi n ow Willow Creek Guard Station (16 mi n of Susanville on State Highway 139, 54 mi s of Adin); State Highway 139 1219 Comment
  CHSC26987  Agastache parvifolia J. D. Prouty 1978-9-17 Lassen Bald Hills, North Shore Eagle Lake. Comment
  CHSC60832  Agastache parvifolia Vernon H. Oswald; Lowell Ahart 1993-6-28 5619 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  OBI48641  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen Grasshopper Valley, 39 mi N of Susanville 1524 Comment
  CDA40751  Agastache parvifolia T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20381 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  UC104571  Agastache urticifolia F. Stephens 1894-7-15 Lassen Madeline Divide Comment
  UC1483833  Ageratina occidentalis G. Schoolcraft 1979-8-15 180 Lassen Tule Mountain area Tule Mountain 2042 Comment
  CAS-BOT-BC30234  Ageratina occidentalis Hans Leschke 1961-8-18 1832 Lassen Summit area of Diamond Peak 2423 Comment
  CAS-BOT-BC30235  Ageratina occidentalis Hans Leschke 1956-9-22 s.n. Lassen Near Sulphur Works entrance 2042 Comment
  CAS-BOT-BC30236  Ageratina occidentalis Hans Leschke 1959-8-8 1634 Lassen Between Bumpas Hell and Cold Boiling Lake 2407 Comment
  JEPS107469  Agoseris glauca var. glauca Lowell Ahart, John Dittes 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CHSC101022  Agoseris glauca var. laciniata John Dittes 2008-5-22 1539 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace on northeast side of Willow Creek. 483 Comment
  CHSC93703  Agoseris glauca var. monticola Lowell Ahart; John Dittes 2005-6-1 11851 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
  UC76006  Agoseris grandiflora var. grandiflora Milo S. Baker Lassen s side Dixie Mt. Comment
  JEPS118267  Agoseris heterophylla Lowell Ahart, John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC585117  Agoseris heterophylla var. heterophylla E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1774 Lassen dry sandy wash Red Rock 1280 Comment
  CHSC36467  Agoseris retrorsa Jeffrey R. Peek 1982-6-3 28 Lassen Ca. .6 mi W jct forest service rds 5.16 and 5.17, ca. 10 yd E 5.16 heading over Black Mtn. Comment
  CAS-BOT-BC127582  Agropyron cristatum Margaret Williams 1974-8-4 74- 4 -78 Lassen Sierra Nevada. Burned area near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  UC1562323  Agropyron cristatum Vernon H. Oswald and Lowell Ahart 1990-7-25 4396 Lassen 2.2 mi w of Highway 395 (intersection of Hwy 70 and Scott Road) 1463 Comment
  JEPS88236  Agropyron desertorum Vernon H. Oswald and Lowell Ahart 1996-6-17 7800 Lassen 7 mi w of Susanville (1 mi e of Devils Corral Trailhead, Bizz Johnson Trail (accessed at Devils Corral Trailhead), off Hwy 36); Modoc Plateau 1420 Comment
  RSA299167  Agropyron desertorum J. T. Howell 1974-7-8 50468 Lassen Susanville 1296 Comment
  UCD32657  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UC60210  Agrostis J. Burtt Davy Jun 17 1897-Jun 24 1897 3303 Lassen Honey Lake Valley Comment
  HSC69074  Agrostis exarata Gary Schoolcraft 1980-8-13 351 Lassen N side of Diamond Mountain, south of Susanville 1951 Comment
  UCD52115  Agrostis exarata R. Tofsrud 1947-7-1 240 Lassen Between Bieber and Nubieber. Comment
  CAS-BOT-BC139450  Agrostis hyemalis Leo Whitney 1933-8-4 2228 Lassen Meadow near Sheepshead. 1889 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest Comment
  SEINET10510581  Agrostis scabra R. Ondricek 1978-8-4 Ondricek 114 Lassen Near edge of Eagle Lake along grassy shoreline. T32N, R11E, se tip of Sec. 19, Antelope Mtn. Quadrangle, 1554 Comment
  CAS-BOT-BC138622  Agrostis stolonifera H. S. Yates 1936-8-11 6069 Lassen Baxter Creek. 1280 Comment
  SEINET5335984  Agrostis stolonifera M. J. Williams 1974-7-26 74 -L-39 Lassen 2 mi. W of Hallelujah Junction, S of highway 70 1494 Comment
  UCD108003  Agrostis stolonifera Tim Kuhn 2006-7-25 57 Lassen Eagle Lake Ranger District. Comment
  UC188820  Agrostis variabilis Milo S. Baker July 1894 Lassen Comment
  RSA0066567  Aliciella triodon Marcus E. Jones 1897-6-25 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC978579  Alisma gramineum Verne Grant and Irving Schneider 1947-9-6 8382 Lassen creek midway between Eagle Lake and Susanville Comment
  CHSC113091  Alisma lanceolatum Lowell Ahart; John Dittes 2013-7-22 18841 Lassen West margin of a duck field, about 80 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA119134  Alisma plantago-aquatica Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1567412  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen along Skedaddle Ranch Rd. near stateline 1584 Comment
  CAS-BOT-BC459569  Allium acuminatum G. Schoolcraft 1986-5-19 1574 Lassen North slope of Bald Mtn., Susanville 1280 Comment
  CAS-BOT-BC459570  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen Along Skedaddle Ranch Road near stateline, Susanville 1584 Comment
  HSC67113  Allium anceps Dale McNeal 1980-6-1 2340 Lassen Beside Hwy. 88 between Adin and Madeline, 15 mi. E of Hwy. 299 in Adin Comment
  SEINET10899656  Allium anceps Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2572 Lassen 3 miles s of hallelujah jct., On u.s. Hwy. 395, Jct. Of u.s. 395 & Calif. 70; Along roadside and in artemesia - grassland field Comment
  SEINET3883805  Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Highway 395, 3.0 miles south of Ravendale.; 0 Comment
  RSA487942  Allium atrorubens var. atrorubens A. Tiehm, J. Nachlinger 1988-6-2 11702 Lassen South side of Shaffer Mountain, 3.4 miles north of the Wendel road on Hwy 395 from Susanville to Alturas, west of the highway. 1387 Comment
  NY247822  Allium bidwelliae R. M. Austin 06 1879 s.n. Lassen Pine Creek Meadows. Comment
  CHSC27592  Allium campanulatum Jennifer Estep 1978-7-5 22 Lassen E side of Mahogany Lake, S of Eagle L. 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
  UC1133850  Allium lemmonii A. Simontacchi 1940-6-4 805 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1229822  Allium lemmonii Gus Hormay 1961-6-15 Lassen experimental forest ot Patterson Flat Patterson Flat Comment
  HSC84126  Allium lemmonii Dale McNeal 1983-6-6 2846 Lassen Beside Hwy. 395, 4.5 mi. S of Modoc County line Comment
  POM260464  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 Comment
  SEINET8191388  Allium parvum L. Miller 1934-3-29 s.n. Lassen E of Susanville. Comment
  POM110002  Allium platycaule Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC474073  Allium platycaule H. D. Ripley; R. C. Barneby 1943-6-14 5733 Lassen Fredonyer Pass 1676 Comment
  CAS-BOT-BC474075  Allium platycaule Clare B. Hardham 1971-7-22 s.n. Lassen Diamond Moutain 2346 Comment
  RSA367108  Allium platycaule Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
Read comments
Nov 17 2011
  RSA59747  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 miles west of Madeline on road from Adin. 1677 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
  UC106708  Allophyllum integrifolium T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC26169  Alnus incana subsp. tenuifolia Detzer; Sacks 1977-7-24 2 Lassen Ca. 3 mi se Milford, .5 mi se Laufman Ranger Stn., on unimproved USFS road. 1481 Comment
  UC1586110  Alnus incana subsp. tenuifolia Barbara Ertter 1988-7-25 7868 Lassen ridge of mts. ca 1.5 mi due e Diamond Peak (n face, ca 10 air mi due s of Susanville); Diamond Mts. 2255 Comment
  CDA28189  Alopecurus aequalis A. A. Beetle 1941-6-28 Lassen Route 36, 10 mi west of Chester 0 Comment
  JEPS87183  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  SEINET10510844  Alopecurus aequalis Alan A. Beetle 1941-6-28 Beetle 2795 Lassen 10 miles west of Chester, rte 36, open meadow near small stream. Assoc. Scirpus congdoni, Deschampsia, Ranunculus. Comment
  CHSC112469  Alopecurus carolinianus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18731 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
  CHSC117529  Alopecurus carolinianus Lowell Ahart; John Dittes 2016-7-13 21142 Lassen Scattered along the west edge of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC54195  Alopecurus geniculatus Vernon H. Oswald 1991-5-28 4620 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  CHSC99293  Alopecurus geniculatus Lowell Ahart; John Dittes 2008-6-20 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114770  Alopecurus geniculatus Lowell Ahart, John Dittes 2008-6-20 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley Comment
  JEPS107365  Alopecurus pratensis Lowell Ahart, John Dittes 2005-6-1 11868 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
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CHSC115589  Amaranthus blitoides Lowell Ahart; John Dittes 2015-7-14 20324 Lassen On the edge 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. 1264 Comment
  CHSC27717  Amaranthus blitoides Robert A. Schlising 1978-7-27 3319 Lassen E of Eagle Lake and NE of Eagle L. Field Station. 1578 Comment
  JEPS78111  Amaranthus blitoides Gary W. Zamzow 1972-7-18 86 Lassen beside Highway 395, 3 mi n Hallelujah Junction 1371 Comment
  CHSC76262  Amaranthus powellii Lowell Ahart; Vernon H. Oswald 1999-9-13 8226 Lassen Along a small slough on the north side of Mapes Road, about 1/2 mile east of lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CAS-BOT-BC42891  Ambrosia acanthicarpa Margaret Williams; Steven Williams 1974-7-26 74 -L-10 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC77181  Ambrosia acanthicarpa G. Schoolcraft 1998-9-14 2809 Lassen Flats N of Turtle Point. 1264 Comment
  UCD143900  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen along State Highway 70 at Beckwourth Pass around 4.3 miles west of its junction with US Highway 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  CAS-BOT-BC42863  Ambrosia acanthicarpa R. E. Frenkel 1964-10-1 916 Lassen On California Hwy. 36, 1 mile east of California Hwy 44, west of Susanville 1493 Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 Comment
  CAS-BOT-BC142539  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  UC12072  Amelanchier utahensis Mrs. R. M. Austin and Bruce Jun 1898 2338 Lassen Comment
  UC726025  Amelanchier utahensis A. A. Heller 1938-6-4 15144 Lassen about 1 mi e Fredonyer Pass 1706 Comment
  CAS-BOT-BC28272  Amphiscirpus nevadensis John Thomas Howell 1934-7-8 12506 Lassen Spalding's, Eagle Lake Comment
  CHSC76307  Amphiscirpus nevadensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8228 Lassen Along a small slough, on the south side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC99503  Amsinckia intermedia Lowell Ahart; John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC725370  Amsinckia tessellata var. tessellata A. A. Heller 1938-6-23 15204 Lassen just outside Johnstonville (on US Hwy #395) Comment
  CHSC71067  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9121 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  SEINET3145644  Antennaria argentea M. E. Jones 1897-6-25 sn 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
  UC380911  Antennaria argentea Marcus E. Jones, A. M. 1897-6-25 Lassen Susanville 1341 Comment
  CAS-BOT-BC59217  Antennaria dimorpha Doris Kildale Gillespie 1930-5-13 9392 Lassen Between Susanville and Janesville Comment
  CHSC86973  Antennaria geyeri L. P. Janeway 2001-6-20 7206 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  RSA416687  Antennaria geyeri J. T. Howell 1934-7-9 12520 Lassen Pine Creek Flat Comment
  SEINET3145605  Antennaria geyeri M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  UC506910  Antennaria geyeri George A. Fischer and Irwin H. Johnson 1933-7-17 F- 267 Lassen Lassen National Forest 1722 Comment
  CAS-BOT-BC58691  Antennaria luzuloides John Thomas Howell 1934-7-6 12443 Lassen Harvey Valley Comment
  CAS-BOT-BC58693  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen East of Westwood Comment
  JEPS107290  Antennaria luzuloides Lowell Ahart, John Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  JEPS96124  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1996-6-24 7857 Lassen ca. 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow ca. 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  SBBG63409  Antennaria luzuloides S. W. Hutchinson, M. N. Ackley -Jun-1925 212 Lassen Eagle Lake region 1554 Comment
  CHSC89757  Antennaria luzuloides subsp. aberrans L. P. Janeway 2004-6-26 8168 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC60713  Antennaria rosea subsp. confinis Vernon H. Oswald; Lowell Ahart 1993-6-14 5526 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
  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
  CHSC4823  Apocynum androsaemifolium R. Carter 1967-7-21 624 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Dramond Mountains. Comment
  CHSC6221  Apocynum androsaemifolium W. Vinyard 1946-6-17 Lassen Eagle Lake, summit of Mt. Fredonyer. 2349 Comment
  CAS-BOT-BC392210  Aquilegia formosa John Thomas Howell 1974-7-10 50545 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC392212  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  UC1143029  Arabis glabra L. R. Short and Wm. Gansberg 1936-7-10 S- 422 Lassen Burgess Spring Experimental Range Lassen National Forest 1850 Comment
  JEPS53155  Arabis rectissima var. rectissima Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  RSA0005588  Arabis sabulosa var. frigida Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC1523810  Arabis sparsiflora var. sparsiflora Gary Schoolcraft 1983-5-24 957 Lassen w. Doyle (along Doyle Grade Rd.) 1645 Comment
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  UC21853  Arctostaphylos nevadensis M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  CHSC23558  Arctostaphylos patula subsp. patula W. O. Baum 1971-6-21 41 Lassen E slope of Gallatin Peak on fire trail. 1920 Comment
  CHSC36979  Arenaria aculeata M. S. Taylor; B. Hammond 1982-8-27 5056 A Lassen On ridge between Crystal and Adams Peaks, Diamond Mts, ca. 4 air mi sw of Constantia. 2225 Comment
  JEPS28438  Arenaria congesta var. congesta George W. Gillett 1957-7-29 945 Lassen Along trail between Butte Lake Snag Lake; Lassen Volcanic National Park 1859 Comment
  UC1136825  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 2223 Lassen Lassen Forest 1728 Comment
  JEPS94458  Arenaria congesta var. subcongesta Vernon Oswald and Lowell Ahart 1997-6-24 8632 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
  UC465891  Arenaria congesta var. subcongesta Franklin P. Nutting Lassen Dixey Valley Comment
  UC1523778  Arenaria serpyllifolia subsp. serpyllifolia Gary Schoolcraft 1981-6-9 441 Lassen s Pittville Comment
  CHSC30585  Argemone munita subsp. argentea P. V. Caldwell 1972-6-24 253 Lassen Sandy beach area between the tunnel and E.L.B.S., off the roadside. Comment
  CAS-BOT-BC401655  Argemone munita subsp. munita John Thomas Howell 1955-7-19 30816 Lassen East side of Beckwourth Pass 1493 Comment
  CHSC6196  Argemone munita subsp. rotundata M. West 1946-6-14 Lassen Antelope Grade. 1615 Comment
  CAS-BOT-BC401791  Argemone munita subsp. rotundata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. E. of Susanville Comment
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  SD113191  Arnica chamissonis Darley F. Howe 1964-8-2 3921 Lassen East Creek, Warner Mountains, Modoc National Forest 2010 Comment
  UC1609304  Arnica chamissonis Vernon H. Oswald and Lowell Ahart 1993-7-8 5665 Lassen Pittville Rd (Lassen 111, 36N01) 2.4 mi n Hwy 44 (ne edge of lake); Poison Lake 1705 Comment
  UC584281  Arnica chamissonis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-13 2343 Lassen Cleghorn Reservoir 1828 Comment
  UC2027326  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen National Forest. Willard Creek. Fredonyer Pass. Fredonyer Pass quadrangle Comment
  OBI75878  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 SW of SW 1500 Comment
  CAS-BOT-BC295821  Arnica dealbata W. S. Williams 1924-9-1 4 Lassen Lassen National Forest. East of Brokeoff Mt. 2133 Comment
  UCR7843  Arnica longifolia Marilyn Malin 1968-6-27 257 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 Comment
  CAS-BOT-BC82713  Arnica longifolia Clarence R. Quick 1962-6-18 62 -16 Lassen Road 21, Blacks Mountain E.F. Hdqrts., east of Halls Flat, north of Poison Lake Comment
  JEPS109852  Arnica sororia Dean W. Taylor 2006-6-29 19559 Lassen Longs Cabin (ca. 12 air miles NE of Old Station) 1783 Comment
  OBI76979  Arnica sororia Anthony Baniaga 2011-6-23 389 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  CAS-BOT-BC85002  Artemisia arbuscula subsp. arbuscula James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-20 4117 Lassen 81 miles south of Alturas in Lassen County. Comment
  RSA78904  Artemisia arbuscula subsp. arbuscula E. K. Balls, Percy C. Everett 1952-10-10 18145 Lassen 6.7 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas 1280 Comment
  UC217036  Artemisia arbuscula subsp. arbuscula H. M. Hall 1921-9-10 11674 Lassen eastern Lassen County Comment
  CAS-BOT-BC84828  Artemisia cana subsp. cana Ernest C. Twisselmann 1961-7-21 6572 Lassen Harvey Valley 1981 Comment
  CAS-BOT-BC90329  Artemisia douglasiana Clare B. Hardham 1969-8-28 17443 Lassen slope west of Janesville Comment
  CAS-BOT-BC90332  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen Along BJ Trail west of Susanville at Hobo Camp Comment
  UCR67466  Artemisia douglasiana George K. Helmkamp 1990-9-23 G- 9 Lassen north of Ravendale 1677 Comment
  SEINET6775481 Image available Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near intersection of Wingfield and Bass Hill Roads 1323 Comment
  CAS-BOT-BC93742  Artemisia ludoviciana subsp. incompta Louella Bass 1974-7-1 s.n. Lassen Sierra Nevada - Elysian Valley 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
  JEPS37022  Artemisia nova R. F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  SEINET251695  Artemisia nova Arnold Tiehm, Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 Rd miles N of Karlo Rd. on highway 395 from Litchfield to Alturas, Just E of the highway. 1402 Comment
  CAS-BOT-BC97328  Artemisia tridentata subsp. tridentata L. S. Smith 1918-8-11 1026 Lassen Modoc National Forest, Camp One 2529 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
  CHSC66846  Artemisia tridentata subsp. tridentata Vernon H. Oswald 1996-10-3 8294 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. 1402 Comment
  UC1537161  Asclepias fascicularis Gordon H. True Jr. 1937-7-10 787 Lassen between Bull Flat and Skeedaddle 1493 Comment
  POM261533  Aster eatonii Alice Eastwood 1912-8-22 1918 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  RSA504836  Aster modestus Bruce Bartholomew, B. Anderson 1988-7-22 4499 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
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Jan 31 2013
  CHSC117759  Astragalus agrestis Virginia Dains; Joanne Crawford 2016-7-13 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km northwest of Termo, 4.7 km west of Highway 395, 150 meters south of agricultural fields. 1617 Comment
  NY791372  Astragalus andersonii N. H. Holmgren 1970-6-25 4379 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). 1524.0 Comment
  NY791377  Astragalus andersonii W. W. Eggleston 1911-7-8 7188 Lassen Vicinity of Doyle Station 1290 Comment
  UC13320  Astragalus andersonii L. T. Stephenson Sept 1897 Lassen Chat Comment
  UC585206  Astragalus andersonii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1754 Lassen nw-facing slope of ridge e Red Rock; ridge e of Red Rock 1615 Comment
  SEINET10450638  Astragalus andersonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17802 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine alon ghigh ridge and in sandy wash. 1402 Comment
  SEINET5323085  Astragalus andersonii M. J. Williams, A. Tiehm 1978-5-14 78- 48 -2 Lassen 2.8 mi S of northern road into Red Rock (off Hwy 395). 1372 Comment
  CAS-BOT-BC177444  Astragalus argophyllus var. argophyllus Arnold Tiehm; Gary Schoolcraft; Margaret Williams 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 Comment
  SEINET5323198  Astragalus bolanderi R. McKee, H. L. Westover 1918-6-13 s.n. Lassen Susanville Comment
  CAS-BOT-BC178765  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains N. of Observation Pk. & Horne Ranch Rd. 1645 Comment
  JEPS699  Astragalus canadensis var. brevidens Jos. Grinnell 1929-6-13 Lassen Spaldings Island , Spaldings Island (Eagle Lake) Comment
  RSA415412  Astragalus canadensis var. brevidens Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CAS-BOT-BC178763  Astragalus canadensis var. brevidens John Thomas Howell 1977-8-11 52718 Lassen EAst of Beckwourth Pass, near Halleluja Junction - Sierra Nevada 1554 Comment
  SEINET948261  Astragalus curvicarpus Ira. L. Wiggins, Dorothy B. Wiggins 1961-1 16331 Lassen Gravelly slopes at margin of grain field 13.5 mi. E of Susanville, sec 36 Comment
  CHSC7676  Astragalus curvicarpus var. curvicarpus Beverly J. Wise 1969-5-18 53 Lassen 7.7 mi. East of Susanville on the south side of Las. Co. Rd. 215. 1341 Comment
  JEPS54557  Astragalus curvicarpus var. curvicarpus T. Brandegee 1892-6-23 Lassen Honey Lake Comment
  SEINET5325006  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch. 1280 Comment
  CAS-BOT-BC182952  Astragalus filipes Lassen 1927 G. S. Crew 1927-7-15 74 Lassen Lassen National Forest 1725 Comment
  CAS-BOT-BC182960  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi. s of Constantia 1402 Comment
  HSC82216  Astragalus filipes Thomas W. Nelson, Jane P. Nelson 1980-7-6 6001 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  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
  UC81430  Astragalus filipes T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UCR18728  Astragalus filipes Frank C. Vasek 1975-7-11 750711- 01 Lassen Modoc Plateau, [Said Valley] State Hwy 139, 3.5 mi north of Grasshopper Valley at junction with Termo Rd. 1650 Comment
  SEINET10903957  Astragalus filipes Williams 1983-7-31 Williams 83 -125-1 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
  CAS-BOT-BC186858  Astragalus gibbsii Louella Bass 1973-6-3 96 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC186861  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
  SEINET3416806 Image available Astragalus gibbsii Lewis S. Rose 1940-6-16 40595 Lassen Susanville, Susanville. 1280 Comment
  CAS-BOT-BC186868  Astragalus gibbsii E. K. Balls 1950-5-21 14825 Lassen Near Standish, Hwy 395, 7 mi. from junction of Hwys 36 and 395 1249 Comment
  CHSC98246  Astragalus inversus Allison Sanger 2003-6-25 Lassen Halls Flat, west of Road 33N13, roughly 3 air miles north-northwest of Swains Hole and 8 miles east-northeast of Old Station. 1676 Comment
  POM180437  Astragalus inversus T. S. Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  UC1142997  Astragalus inversus August L. Hormay 1934-7-2 Lassen Black's Mtn Headquarters , Black's Mtn Headquarters (Lassen National Forest) 1706 Comment
  POM23664  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC64785  Astragalus iodanthus var. diaphanoides Vernon H. Oswald 1995-5-24 6763 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1249 Comment
  CAS-BOT-BC187155  Astragalus lentiginosus var. chartaceus H. D. Ripley; R. C. Barneby 14 Jun. 5744 Lassen Hidden Valley E of Susanville 1310 Comment
  UC13383  Astragalus lentiginosus var. floribundus L. T. Stephenson Sep 1897 Lassen Chat , Chat (Sierra Valley) Comment
  UC862859  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 60 Comment
  CAS-BOT-BC187331  Astragalus lentiginosus var. salinus Alice Eastwood; John Thomas Howell 1940-6-16 8335 Lassen Near Susanville Comment
  CHSC99125  Astragalus lentiginosus var. salinus Lowell Ahart; John Dittes 2008-6-19 14898 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
  JEPS118281  Astragalus lentiginosus var. salinus Lowell Ahart, John Dittes 2011-6-20 17510 Lassen Forest floor, near the edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin 1511 Comment
  SBBG128879  Astragalus lentiginosus var. salinus L. Ahart 2011-6-20 17510 Lassen near edge of Ash Valley Rd, 3120 feet S of Ash Crk Cmpgrd, ca. 6.5 mi (air) SE of Adin 1511 Comment
  UC570045  Astragalus pulsiferae E. Sawyer 1935-6-27 237 Lassen Long Valley Sierraville Quad., Long Valley 1310 Comment
  JEPS109744  Astragalus pulsiferae var. coronensis Dean W. Taylor 2005-6-29 19379 Lassen Piute Creek, 3 mi W from western edge Susanville 1310 Comment
  NY694127  Astragalus pulsiferae var. pulsiferae See comments 1981-6-23 614 Lassen West of Susanville 1463 Comment
  NY694131  Astragalus pulsiferae var. pulsiferae A. A. Heller 1907-7-1 8674 Lassen Near Old Chat Comment
  SEINET5324389  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 L-16 Lassen 2 mile W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  UC13450  Astragalus pulsiferae var. suksdorfii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC23489  Astragalus purshii Waynes O. Baum 1971-7-16 71 -70 Lassen W. slope of Gallatin Peak. 1981 Comment
  CHSC25301  Astragalus purshii Pauleen Broyles 1977-5-30 144 Lassen Spencer's Basin ca 8 km n of Herlong. 1770 Comment
  SJSU8415  Astragalus purshii J. W. Tilden 1960-6-27 1498 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  JEPS127726  Astragalus purshii var. purshii H. Chappel, K. Moran & K. Strassman 2002-6-27 ALT- 013 Lassen Pit River Valley/Beaver Creek BLM land Comment
  UC1609114  Astragalus purshii var. purshii Vernon H. Oswald and Lowell Ahart 1993-6-14 5520 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89); w shore Eagle Lake, Sandy Beach 1566 Comment
  CAS-BOT-BC194091  Astragalus purshii var. purshii Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC194096  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8345 Lassen Jonesville Comment
  RSA0006859  Astragalus purshii var. purshii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1944-5-29 5957 Lassen Susanville Comment
  POM45166  Astragalus purshii var. tinctus T. S. Brandegee 1892-6-23 s.n. Lassen Honey Lake 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
  UC1128896  Astragalus purshii var. tinctus A. Simontacchi 1940-6-8 839 Lassen 1/2 mi ne Ebey Lake; Halls Flat Quad., Lassen National Forest, e of Ebey Lake 1699 Comment
  UC13372  Astragalus whitneyi M. S. Baker and F. Nutting 1894-7-3 Lassen s side Dixey Mts. Comment
  RSA26502  Astragalus whitneyi Marcus E. Jones 1897-6-30 s.n Lassen Susanville; 7 miles below Eagle Lake. 1524 Comment
  RSA639008  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 Lassen Bureau of Land Management land, Madeline Plains: SW of US Rt 395, SE of CR 515 (Termo road), S of BLM road 1614, and SW of Termo. Along jeep road to Schott Canyon. Comment
  JEPS94456  Astragalus whitneyi var. confusus Vernon Oswald and Lowell Ahart 1997-6-24 8634 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
  NY701852  Astragalus whitneyi var. siskiyouensis H. D. D. Ripley 1943-6-14 5747 Lassen Hidden Valley, east of Susanville 1585 Comment
  CHSC71080  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1998-5-22 9130 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Along a streamlet. 1463 Comment
  RSA0059603  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
  NY652203  Atriplex argentea var. hillmanii G. Schoolcraft 1989-5-16 1874 Lassen West of Highway 395 about 2 miles south of Karlo turnoff 1356.4 Comment
  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
  CAS-BOT-BC170276  Atriplex confertifolia C. B. Wolf 1931-9-5 1279 Lassen Honey Lake Valley, 1/2 mile from Medee R.R. Station on road to Doyle. 1219 Comment
  UC768839  Atriplex gardneri var. falcata R. F. Hoover 1940-10-5 4677 Lassen alkali plain s Secret Valley; s of Secret Valley Comment
  CHSC76092  Atriplex heterosperma Lowell Ahart; Vernon Oswald 1999-9-13 8204 Lassen On the west side of the dirt road and 1/4 mi south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1924265  Avena fatua Debra Valov 2004-6-9 2004265 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC106555  Balsamorhiza John Thomas Howell 1976-7-20 52011 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek - Sierra Nevada 1432 Comment
  CAS-BOT-BC106487  Balsamorhiza hookeri Betty J. Hammerly 1941-6-21 51 Lassen 8 miles SE of Likely on Blue Lake Road Comment
  CAS-BOT-BC106489  Balsamorhiza hookeri David D. Keck; J. Clausen 1935-6-24 3747 Lassen 2 mi. S. of Ravendale, in light sandy clay soil with some rock. 1463 Comment
  JEPS30490  Balsamorhiza hookeri Peter H. Raven and Otto T. Solbrig 1958-6-17 13292 Lassen o.4 mi s, along U.S. Highway 395 Ravendale Comment
  UC1794995  Balsamorhiza hookeri R. K. Brummitt 1998-5-17 19897 Lassen 12 km W of Susanville, E foot of Fredonyer Pass 1400 Comment
  UCD129523  Balsamorhiza hookeri Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  SEINET7239770 Image available Balsamorhiza hookeri var. hirsuta G. Schoolcraft 1998-7-8 2750 Lassen South of Round Corral Reservoir 1890 Comment
  CAS-BOT-BC100053  Balsamorhiza lanata B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6557 Lassen Just S of Ravendale 1580 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
  CHSC7644  Balsamorhiza sagittata Beverley J. Wise 1969-5-20 32 Lassen West city limits of Susanville on Hwy 36. 1341 Comment
  SEINET10617239  Balsamorhiza sagittata Billy Joe Cox 1971-6-2 Cox 3216 Lassen Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia. 1646 Comment
  SEINET10924972  Balsamorhiza sagittata Katherine L. Morris, Douglas G. LeDoux; David B. Dunn 1973-5-25 Morris 216 Lassen Collected 2.6 mi. W of Susanville, on U.S. 36, in an area of Pinus jeffreyi and Purshia. Comment
  CHSC99151  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
  NY119709  Barbarea orthoceras R. C. Rollins 1981-5-30 81165 Lassen Gold Run Road toward Sky Line Drive, 10 miles S of Susanville Comment
  CHSC99983  Bassia hyssopifolia L. P. Janeway 2008-8-2 9525 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  NY529209  Bassia hyssopifolia V. E. Grant 1947-9-6 8390 Lassen Irrigation ditch west of Fleming Ranch Headquarters, near Wendel Comment
  SEINET3872219  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake.; 0 1559 Comment
  JEPS127216  Beckmannia syzigachne Lowell Ahart, John Dittes 2016-7-15 21216 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1100216  Beckmannia syzigachne Herbert L. Mason 1947-7-9 13299 Lassen 5 mi e Bieber Comment
  UC573777  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 mi ese Susanville; Susanville Quadrangle 1280 Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  CHSC96767  Berteroa incana D. McDonald 2005-7-18 1307852 Lassen Modoc Plateau. Lassen County. Hallelujah Junction. Comment
  SEINET9310410  Berteroa incana Unknown 2005-7-18 1307852 Lassen Modoc Plateau Comment
  CHSC66844  Berula erecta Vernon H. Oswald 1996-9-21 8285 Lassen Modoc Plateau. Ca. 3 mi W of Hwy. 139 on the road to Eagle Lake Biological Station, ca. 10 mi (air) N of Susanville. 1508 Comment
  HSC95181  Betula glandulosa Gordon Leppig 1998-7-12 957 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS32533  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near, between Jonesville and Standish Honey Lake Comment
  UC1553384  Bidens cernua G. Schoolcraft 1988-8-10 1848 Lassen 10 mi ne of Susanville (along Hwy 139 at Jack's Valley Spring); Highway 139, Jack's Valley Spring 1505 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
  CHSC99132  Blepharipappus scaber Lowell Ahart; John Dittes 2008-6-19 14876 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
  JEPS88876  Blepharipappus scaber Lauramay T. Dempster 1961-6-17 1669 Lassen about 4 mi sw junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  POM223583  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3733 Lassen 2 miles south of Ravendale. 1463 Comment
  RSA713115  Blepharipappus scaber L. P. Janeway 2005-7-4 8462 Lassen Ridge top north above Long Valley; 0.4 km west of Road 34N41. High Cascade Range 1752 Comment
  RSA768023  Blepharipappus scaber L. Ahart, John Dittes 2010-7-31 16980 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
  UC1136967  Blepharipappus scaber L. R. Short 1936-6-10 S- 415 Lassen Burgess Spr. Exp. Range 1798 Comment
  UC1393121  Blepharipappus scaber John L. Strother 1970-5-23 953 Lassen 6 mi n of Honey Lake 1280 Comment
  UC194505  Blepharipappus scaber unknown 1878-4-1 Lassen Madeline Plains Comment
  CAS-BOT-BC128047  Blepharipappus scaber B. J. Hammerly 1941-6-21 49 Lassen Dry plateau 8 mi. SE. of Likely on Blue Lake road Comment
  RSA647521  Blepharipappus scaber Marion P. Harthill 1972-6-17 806 Lassen Ravendale. 1646 Comment
  SEINET7379359 Image available Blepharipappus scaber subsp. scaber J. A. Young 1982-6-9 s.n. Lassen Myers Ranch, Adin 1372 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-BC14089  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 miles SE of Nigger Cabin. 1737 Comment
  CHSC40529  Boechera pauciflora J. D. Jokerst 1983-5-30 1798 Lassen Along the SW side of the road to Knox Mt. ca 1 mile north of its junction with the road that connects Aden and Madeline. Comment
  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
  UCD114424  Boechera puberula Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  CAS-BOT-BC25705  Boechera sparsiflora John Thomas Howell; Gordon H. True 1973-7-31 50064 Lassen Sierra Nevada. Diamond Range. Road from Janesville to Thompson Peak. 1783 Comment
  CHSC12965  Boechera sparsiflora K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5815 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  JEPS90262  Boechera sparsiflora Dean Wm. Taylor with Glenn L. Clifton 1992-5-7 12542 Lassen 1.5 mi sw of Ash Valley Cemetery (Modoc Plateau, Ash Valley); Modoc Plateau, Ash Valley Comment
  CAS-BOT-BC25706  Boechera sparsiflora Reed Clark Rollins; Kathryn W. Rollins; Aileen Roads 1983-7-5 83226 Lassen Plumas National Forest. Above Laufman Ranger Station. 4.5 miles east of US Highway 395. Comment
  RSA772655  Boisduvalia glabella Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  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
  CAS-BOT-BC127868  Brickellia greenei Clare B. Hardham 1969-8-28 17430 A Lassen Granitic slope west of Janesville Comment
  RSA712894  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CHSC27122  Bromus briziformis Robert A. Schlising 1978-6-28 3295 Lassen E of Eagle Lake at Lower Dry Lake. 1645 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
  CHSC64814  Bromus briziformis Vernon H. Oswald 1995-5-31 6799 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  JEPS45832  Bromus briziformis Duncan Dunning 1923-6-6 Lassen lava rocks below Ravendale Comment
Read comments
Jun 24 2009
  OBI75882  Bromus briziformis Anthony Baniaga 2011-6-30 405 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1470 Comment
  CAS-BOT-BC149582  Bromus carinatus var. carinatus Clare B. Hardham 1971-8-22 18403 A Lassen Sierra Nevada. Diamond Mountain. Comment
  UC1136818  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1820 Comment
  UCD59104  Bromus carinatus var. marginatus A. A. Beetle 1941-6-28 2802 Lassen 10 miles W of Chester. 1524 Comment
  UCD58463  Bromus commutatus L. D. Whitney 1935-6-23 s.n. Lassen Fruit Growers Supply Co., Camp #10. Comment
  UCD58854  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  OBI82789  Bromus japonicus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3923 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  UC1024947  Bromus madritensis subsp. rubens Leo Whitney 1935-6-21 3322 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UC1037125  Bromus marginatus Leo Whitney 1935-6-19 3262 a Lassen near Camp 10 (Lassen National Forest, Fruit Grower's Supply Company); Lassen National Forest, Fruit Grower's Supply Company Comment
  CAS-BOT-BC162017  Bromus racemosus Louella Bass 1973-5-29 EV 66 Lassen Elysian Valley. 1325 Comment
  UC1024828  Bromus racemosus Leo Whitney 1935-6-12 3232 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10 Lassen National Forest; , Fruit Grower's Supply Company, Camp Comment
  HSC79991  Bromus tectorum William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  JEPS107312  Bromus tectorum Lowell Ahart, John Dittes 2005-6-1 11909 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
  UCD57776  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Lassen National Forest. Westwood Junction. 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
  POM85831  Callitriche heterophylla var. bolanderi Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  NY18970  Calocedrus decurrens K. Morris 1973-5-25 226 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  HSC15373  Calochortus bruneaunis M. T. Milligan 1964-8-6 209 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  RSA377380  Calochortus leichtlinii Christopher Davidson 1974-7-25 2498 Lassen Lassen Volcanic National Park, road to Juniper Lake 2134 Comment
  CAS-BOT-BC483439  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CDA39286  Calochortus macrocarpus L. E. Wheeler 1967-7-25 s.n. Lassen H. Boswell property, Madelaine. 0 Comment
  HSC63826  Calyptridium monospermum Teresa Prendusi 1980-7-1 Lassen Champs Flat, 7 mi. W of northern tip of Eagle Lake 1677 Comment
  CHSC23563  Calyptridium umbellatum W. O. Baum 1971-6-21 43 Lassen In fire trail; e slope of Gallatin Peak. 1920 Comment
  CHSC34600  Calyptridium umbellatum Cindy Prouty 1978-7-10 17 Lassen Colman L. area, SE of Eagel L. 1962 Comment
  UC1136685  Calyptridium umbellatum A. Simontacchi 1940-5-17 733 Lassen 5.7 mi ssw of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 Comment
  UC852120  Calyptridium umbellatum A. A. Heller 1938-6-22 15139 Lassen 1 mi s of Westwood 1524 Comment
  SD61074  Calystegia occidentalis subsp. occidentalis Darley F. Howe 1964-8-1 3915 Lassen Parsnip Creek, Modoc National Forest, Warner Mountains. 1830 Comment
  SDSU5718  Calystegia occidentalis subsp. occidentalis D. F. Howe 1964-8-1 3915 Lassen Modock National Forest. 1829 Comment
  SEINET3992160  Camassia quamash A. A. Heller 1938-5-4 15140 Lassen 2 mi E of Westwood; Transition Life Zone 1494 Comment
  JEPS61547  Camassia quamash subsp. quamash Leland S. Smith 1927-6-10 14 Lassen Lassen National Forest, Norvell Flat Norvell Flat; Lassen National Forest, Norvell Flat 1747 Comment
  CDA39275  Camassia quamash subsp. quamash G. D. Barbe, Phyllis Hiatt, Mike Keffer 1980-6-4 2797 Lassen Secret Creek drainage, west side of Highway 395 at the foot of basaltic Saddle Rock, 15 miles (24.1 km) south of Ravendale. 0 Comment
  JEPS96126  Camelina microcarpa Vernon H. Oswald and Lowell Ahart 1996-6-24 7881 Lassen 2.5 mi s of Eagle Lake (0.5 mi e of Eagle Lake Road (A1), at ne corner of Papoose Meadows, (0.1 mi e of where Papoose Creek leaves the n end of meadow)); Modoc Plateau, Papoose Meadows 1636 Comment
  NY850974  Camissonia boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen About midway between Mapes and Secret Valley on U.S. Highway #395. 1372 Comment
  JEPS89992  Camissonia contorta Dean Wm. Taylor with Robert A. Price 1988-6-4 9768 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. Watershed 1036 Comment
  SEINET5343990  Camissonia contorta M. J. Williams 1974-7-26 74 -L-22 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 70 1494 Comment
  UC180090  Camissonia contorta Milo S. Baker 1890-1 Lassen Milford Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  JEPS107981  Camissonia parvula Lowell Ahart, John Dittes 2005-6-2 11938 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  UC107616  Camissonia pubens T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  HSC86885  Camissonia tanacetifolia R. Carter 1967-6-23 547 Lassen Upper part of Murrer's Meadow Comment
  NY852074  Camissonia tanacetifolia Mrs. C. C. Bruce 06 1898 2203 Lassen Susanville Comment
  RSA113688  Camissonia tanacetifolia H. K. Sharsmith 1955-6-27 4511 -B Lassen Adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1220 Comment
  HSC22874  Camissonia tanacetifolia John Pratt 1970-6-13 6 Lassen 1677 Comment
  HSC63834  Camissonia tanacetifolia Teresa Prendusi 1980-5-16 Lassen 6 mi. S of Ravendale and 1 mi. W of Hwy. 395 Comment
  RSA186587  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  JEPS124378  Capsella bursa-pastoris Lowell Ahart, John Dittes 2015-7-13 20308 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  POM95249  Capsella bursa-pastoris Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC10331  Cardamine breweri M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  UC1609211  Cardamine breweri Vernon H. Oswald and Lowell Ahart 1993-8-3 5743 Lassen ca 13 mi (air) n. Lake Almanor (s.w. edge Cooper Swamp located e. of Silver Lake just e. of the Caribou Wilderness); Cooper Swamp 1932 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
  RSA149125  Cardaria pubescens I. L. Wiggins, Dorothy Wiggins 1961-6-16 16529 Lassen 4.1 miles E of Bieber. Comment
  CHSC85988  Carex abrupta L. P. Janeway 2003-7-24 7918 Lassen High Cascade Range. Small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  CHSC112416  Carex angustata Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18769 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC76790  Carex angustata L. P. Janeway 1999-9-5 6574 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  JEPS63614  Carex angustata Leland S. Smith 1922-7-30 68 Lassen Martin Spring Meadow Lassen National Forest Comment
  SEINET7549686 Image available Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  POM313130  Carex athrostachya H. L. Mason 1947-7-9 13300 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  CHSC66412  Carex aurea Vernon H. Oswald; Lowell Ahart 1996-6-17 7814 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  CHSC77241  Carex aurea G. Schoolcraft 1998-7-7 2755 Lassen Along Pine Creek NE. of Fredonyer Peak. 1645 Comment
  POM80807  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CAS-BOT-BC19779  Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvery Valley. Comment
  CHSC68771  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8519 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
  HSC48337  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen 2 mi. N of Westwood Comment
  JEPS107438  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1776677  Carex douglasii G. Schoolcraft 1995-5-22 2486 Lassen East of Skedaddle Ranch 1554 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
  CAS-BOT-BC75502  Carex echinata var. ormantha Leo Whitney 1934-8-2 1967 Lassen Bridge Creek Camp. 1737 Comment
  CAS-BOT-BC19917  Carex epapillosa L. S. Smith 1918-8-11 1018 Lassen Modoc Forest. Trail to Lost Lake-T38-16. 2438 Comment
  SEINET7485203 Image available Carex filifolia Barbara L. Wilson, Danna Lytjen and Nick Otting 2005-1 11494 Lassen Blue Door Flat, seven or eight miles east of Highway 295 on county road 510 1774 Comment
  CHSC68772  Carex filifolia var. erostrata Vernon H. Oswald; Lowell Ahart 1997-5-27 8510 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  UC1609197  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  JEPS28342  Carex heteroneura George W. Gillett 1957-7-21 865 Lassen 300 yds. n trail summit (Juniper Lake - Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  CAS-BOT-BC20937  Carex heteroneura George Wilson Gillett 1957-7-28 937 Lassen Widow Lake. South shore. 2072 Comment
  JEPS63616  Carex hoodii Leland S. Smith 1922-7-18 78 Lassen Martin Springs Meadow, Lassen National Forest Comment
  UC190415  Carex hoodii M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  CHSC115041  Carex inops subsp. inops Stephanie Puentes 2011-7-7 09419 Lassen Big Foot THP. In the Big Valley Mountains, west of Big Valley. About 5 air miles SW of Lookout and 6 air miles NW of Bieber. 1447 Comment
  HSC48181  Carex integra D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19239 Lassen 2 mi. N of Westwood Comment
  UC1133501  Carex integra A. Simontacchi 1940-5-14 720 Lassen 4.1 mi wnw Aspen Well; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC35780  Carex jonesii J. T. Howell 1934-6-14 12165 Lassen Warner Mts.; near Lost Lake 2438 Comment
  CHSC76848  Carex lenticularis var. lipocarpa L. P. Janeway; Loren Gehrung 1999-10-9 6594 Lassen High Cascade Range. In southwestern arm of Caribou Lake, 1995 Comment
  CAS-BOT-BC31439  Carex leporinella Hans Leschke 1945-9-15 s.n. Lassen Near Twin Lakes, Mt. Lassen Comment
  UC1133499  Carex microptera A. Simontacchi 1940-7-3 917 Lassen 3.5 mi wsw Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC25908  Carex nebrascensis K. R. Stern 1967-4-24 2409 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  CHSC66411  Carex nebrascensis Vernon H. Oswald; Lowell Ahart 1996-6-17 7813 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the edge of the trail at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  SEINET7568737 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7913 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  UC1133502  Carex nebrascensis Robert W. Gardner 1939-6-6 G- 29 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  CAS-BOT-BC119042  Carex pellita Hans Leschke 1960-8-10 1768 a Lassen Badger Flat 1912 Comment
  CHSC66270  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-24 7892 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the southern-most spring on the E side of the meadow 1633 Comment
  CHSC93433  Carex petasata Martin J. Lenz 2004-6-23 221 Lassen Approx. 0.6 air mi. WSW of Schoonamaker Lake. UTM 10 664213 E 4515435 N. Edge of seasonally wet meadow. 1707 Comment
  JEPS106522  Carex petasata L. P. Janeway 2004-6-26 8139 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  CAS-BOT-BC118399  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49193 Lassen Elysian Valley, northwest of Janesville. 1325 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
  UC1542937  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen near Stone Ranch; Eagle Lake 1554 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-BC118402  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen Along shore of Eagle Lake near Stone Ranch. 1554 Comment
  CDA33131  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  CAS-BOT-BC118615  Carex raynoldsii George Wilson Gillett 1957-7-29 948 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  CAS-BOT-BC118026  Carex rossii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49195 Lassen Elysian Valley NW of Janesville. 1325 Comment
  CAS-BOT-BC118229  Carex scopulorum var. bracteosa John Thomas Howell 1934-6-14 12162 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  POM81761  Carex sheldonii Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CDA33169  Carex simulata Gordon Leppig, J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch Comment
  CHSC74312  Carex simulata James D. Jokerst 1991-5-28 3297 Lassen Survey for reroute of Hwy. 139 at the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. Modoc Plateau. 1554 Comment
  HSC95226  Carex simulata Gordon Leppig 1998-8-17 1046 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC117018  Carex straminiformis Clare B. Hardham 1971-8-22 18423 Lassen Diamond mountain. Comment
  UCD140896  Carex straminiformis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  JEPS28384  Carex subfusca George W. Gillett 1957-7-26 911 Lassen lake shore near ne arm of Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  SEINET4292262 Image available Carex subfusca Unknown 2003-1 7915 Lassen Swain Mountain 7.5'quad. High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of CloverValley. Comment
  UC2031880  Carex subfusca Nick Otting 2003-7-17 695 Lassen Cascade Mountains, Susan River, 1/2 mile NE of Devil's Corral, 5 air miles west of Susanville. Comment
  JEPS28341  Carex vesicaria George W. Gillett 1957-7-22 879 Lassen along south shore Snag Lake Lassen Volcanic National Park, Snag Lake 1850 Comment
  HSC103677  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8029 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  OBI75892  Carex vesicaria Anthony Baniaga 2011-8-17 503 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1978 Comment
  RSA298353  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  CAS-BOT-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
  CAS-BOT-BC248972  Castilleja Margaret M. Hanna 1956-6-3 942 Lassen 2 mi. west of Nubieber, Hiway 299 Comment
  JEPS79146  Castilleja angustifolia L. R. Heckard with R. Bacigalupi 1980-6-11 5249 Lassen about 8 mi ne Litchfield (along U.S. Hwy 395) 1371 Comment
  UC585181  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1759 Lassen e of Red Rock (nw side of summit of ridge) 1828 Comment
  CAS-BOT-BC249610  Castilleja applegatei subsp. pinetorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49170 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CHSC7749  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-11 103 Lassen West city limits of Susanville at 'Inspiration Point. 1341 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
  UC1924599  Castilleja applegatei subsp. pinetorum Debra Valov 2006-5-28 2006009 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1291 Comment
  UC199389  Castilleja applegatei subsp. pinetorum Milo S. Baker Lassen Dixie Mountains Comment
  CAS-BOT-BC243710  Castilleja applegatei var. pinetorum Clarence R. Quick 1961-6-21 61 -31 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  UC1609116  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1993-6-14 5525 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd (Lassen A1), at Sandy Beach, on the w shore of Eagle Lake, on the upper beach between the road and the lake); Eagle Lake 1566 Comment
  CHSC99527  Castilleja campestris subsp. campestris Lowell Ahart; John Dittes 2008-6-20 14978 Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS62838  Castilleja campestris subsp. campestris John Weiler 1970-7-6 70188 Lassen 3.6 mi s Madeline (along Highway 395) 1371 Comment
  CHSC115227  Castilleja chromosa B. Castro; L. P. Janeway. 2015-6-5 2094 Lassen Great Basin. Near the SE corner of the Warner Mtns. Along W side of Tuledad Toad ca 3 air mi NE of Dodge Reservoir and 0.5 road-mi S of W end of Tuledad Canyon, on gentle NE-facing slope. 1661 Comment
  CHSC60852  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1993-6-28 5575 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  CHSC66262  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1996-6-24 7842 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow. 1633 Comment
  UC1567405  Castilleja lacera G. Schoolcraft 1989-6-5 1895 Lassen s of Adin (intersection of Hwy 139 and A2) 1341 Comment
  HSC20530  Castilleja linariifolia M. T. Milligan 1964-8-6 208 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS62836  Castilleja linariifolia John Weiler 1970-7-8 70240 Lassen n shore Eagle Lake Comment
  JEPS76163  Castilleja linariifolia T. I. Chuang with Fei-Mei Chuang 1977-7-25 7660 Lassen 10 mi w Madeline Comment
  CAS-BOT-BC244886  Castilleja miniata Louella Bass 1973-6-17 116 Lassen Elysian Valley. Plants of the Sierra Nevada 1325 Comment
  CAS-BOT-BC244888  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen meadows foot of Lassen Butte. Lassen Butte Region Comment
  POM44361  Castilleja miniata Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  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
  CHSC5911  Castilleja tenuis J. B. Kimsey 1946-6-20 Lassen Grasshopper Valley. 1615 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
  JEPS114743  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-19 14874 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS124373  Castilleja tenuis Lowell Ahart, John Dittes 2015-7-13 20314 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CDA7137  Castilleja tenuis G. Schoolcraft 1993-6-29 s.n. Lassen Ash Valley RNA 16 miles E of Adin, CA Comment
  CHSC29953  Caulanthus major Robin L. Ondricek 1978-6-8 46 Lassen Ridge E of Lower Dry Lake. 1767 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
  NY608462  Caulanthus major var. nevadensis G. Schoolcraft 1982-7-6 758 Lassen Fort Sage Mountains 1981.2 Comment
  CAS-BOT-BC48706  Ceanothus cordulatus John Thomas Howell 1974-7-9 50480 Lassen Coniferous forest between Susanville and SW end of Eagle lake 1828 Comment
  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
  POM85246  Ceanothus cordulatus Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CAS-BOT-BC49259  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7991 Lassen Big Valley Mts. Comment
  HSC26519  Ceanothus cuneatus J. P. Smith, J. O. Sawyer 1972-5-6 5242 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
Read comments
Apr 29 2013
  CHSC6249  Ceanothus prostratus J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2133 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
  UC727092  Ceanothus prostratus A. A. Heller 1941-6-26 16230 Lassen on roadside banks on the ridge w Nieubieber; w of Nieubierber Comment
  HSC30197  Ceanothus prostratus var. laxus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19257 Lassen Harvey Valley near Cone Springs Comment
  UC1071532  Ceanothus velutinus A. Simontacchi 1940-6-15 866 Lassen 1.0 mi ssw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  OBI4702  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On N side of old rd to Susanville, 1 mi W of Johnstonville Comment
  UCD130019  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen east side of Highway 395 to Madelaine, 1.6 mile north of Termo. Comment
  CDA36156  Centaurea maculosa CDFA Staff Jul 1998 Lassen Susanville. 0 Comment
  JEPS30734  Centaurea virgata subsp. squarrosa E. E. Fix 1960-9-21 Lassen Bieber, vic. of Comment
  JEPS78140  Centaurea virgata subsp. squarrosa Sally Levingson 1972-7-19 99 Lassen 2 mi east of Beiber on Highway A2 beside the road. 975 Comment
  CAS-BOT-BC106074  Centaurea virgata subsp. squarrosa Barrett Anderson 1986-7-9 3128 Lassen Road to Day, about 2.4 km N of Rte 299. 1065 Comment
  NY187215  Centaurium exaltatum B. J. Ertter 1987-7-24 7305 Lassen Ca. 3/4 mi ENE of Beckwourth Pass at end of crumbling paved road. 1524.0 Comment
  CHSC66722  Cerastium fontanum subsp. vulgare Vernon H. Oswald; Lowell Ahart 1996-8-1 8126 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. On the downhill side of the road. 1737 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
  UC956834  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1947-7-9 13295 Lassen irrigation ditch 5 mi e Bieber Comment
  UC452575  Cercocarpus ledifolius var. ledifolius Mrs. R. M. Austin 1879-1 Lassen Comment
  UC1777700  Chaenactis douglasii var. douglasii Donald W. Kyhos 1967-9-1 67 -88 Lassen Mt. Lassen National Park. Area within 1/2 mile north of Hat Lake. Pumice slopes Comment
  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
  RSA30268  Chaenactis xantiana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC19727  Chamaebatiaria millefolium Mary E. Meyer 1973-7-7 14 Lassen Located west of ELBS water tower. Comment
  UC747012  Chamaebatiaria millefolium G. Thomas Robbins 1945-10-6 2151 Lassen nw slope ofCrater Lake Mountain, Lassen National Forest Crater Lake Mountain; Lassen National Forest, Crater Lake Mountain 1981 Comment
  CHSC113085  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18857 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117544  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2016-7-13 21130 A Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC65310  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1995-8-14 7178 Lassen Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  CHSC76100  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8234 Lassen On the west side of Highway 139, near the south end of Eagle Lake and the highway, Eagle Lake. 1554 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  CHSC6213  Cheilanthes gracillima P. Balch 1955-6-1 Lassen Silver Lake, Eagle Lake. 1981 Comment
  CHSC106830  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet. 1524 Comment
  POM312473  Chenopodium chenopodioides Verne Grant, Irving Schneider 1947-9-5 8368 Lassen NW shore of Eagle Lake, by Sam Webb s place (Spaulding). Comment
  UC1191330  Chenopodium chenopodioides Malcolm A. Nobs and S. Galen Smith 1949-7-22 1071 Lassen Eagle Lake; ne shore Comment
  CDA23377  Chenopodium hians J. T. Howell 1962-6-19 37889 Lassen 3 miles south of Hallelujah Junction. Comment
  CAS-BOT-BC426318  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  CAS-BOT-BC260781  Chenopodium rubrum var. humile Malcom A. Nobs; S. Galen Smith 1949-7-22 1071 Lassen Northeast shore of Eagle Lake Comment
  UCD149970  Chloropyron maritimum subsp. canescens Harry George and F. K. 1967-8-15 s.n. Lassen Honey Lake Wildlife Area, Dakin Unit. Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CAS-BOT-BC36325  Chrysolepis sempervirens George W. Gillett 1957-7-26 905 Lassen Point of rocks wets of Butte Lake outlet and above trail 1844 Comment
  SEINET7450659 Image available Chrysopsis villosa var. minor M. J. Williams 1974-7-29 74 -L-61 Lassen 2 mi. west of Hallelujah Junction, south of Hwy. 70. 1494 Comment
  RSA79230  Chrysothamnus nauseosus subsp. albicaulis E. K. Balls, Percy C. Everett 1952-10-10 18135 Lassen 4 miles east of Susan River Bridge, Hwy. 36 1372 Comment
  CHSC66850  Chrysothamnus viscidiflorus subsp. lanceolatus Vernon H. Oswald 1996-9-21 8287 Lassen Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. Levee, along the S edge of Willow Creek ca. 1 mi E of the parking area on the highway. 1490 Comment
  CAS-BOT-BC105902  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1987-9-9 1776 Lassen Ash Valley RNA just S. of T in road 1554 Comment
  SEINET7451023 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1994-9-13 2430 Lassen Just above gate along road to Fredonyer Peak lookout 2256 Comment
  UC1776665  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1994-9-13 2430 Lassen Just above gate along road to Fredonyer Pk. lookout 2255 Comment
  UC761845  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-10-5 4664 Lassen Wendel Comment
  CAS-BOT-BC162753  Chylismia claviformis subsp. cruciformis G. H. True 1937-7-10 791 Lassen Skeedaddle Comment
  SEINET10940912  Cirsium Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 475 Lassen Approx. 2 mi. N of Susanville, across Calif. Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  CHSC23554  Cirsium andersonii W. O. Baum 1971-7-6 49 Lassen Slope of Gallatin Peak. 1981 Comment
  UC1483859  Cirsium andersonii G. Schoolcraft 1980-8-13 354 Lassen n side Diamond Mt. Comment
  NY409534  Cirsium arvense G. Schoolcraft 1988-8-10 1847 Lassen In Willow Creek Valley along Hwy. 139. 149.4 Comment
  CDA1170  Cirsium cymosum T. C. Fuller 1963-7-16 10921 -B Lassen West of Hwy 395; 14.3 miles south of Ravendale. 0 Comment
  CDA1172  Cirsium cymosum T. C. Fuller 1963-7-16 10921 -C Lassen West of Hwy 395; 14.3 miles south of Ravendale. 0 Comment
  CAS-BOT-BC278003  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, Hy. 299 Comment
  CAS-BOT-BC278005  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, on highway 299 Comment
  CAS-BOT-BC278011  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen 7 mi N/road to Karlo Comment
  UC1587096  Cirsium occidentale var. candidissimum G. Schoolcraft 1991-7-30 2201 Lassen s of Widow Mt. (along Rock Canyon Rd.) 1310 Comment
  CDA1489  Cirsium ochrocentrum Lee Wheeler 1959-7-23 s.n. Lassen Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.) Comment
  CDA1526  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1527  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 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
  JEPS109645  Cirsium scariosum Dean W. Taylor 2002-6-21 18176 Lassen Windmill Flat (lying ca. 1.5 mi NW of Snider Lake), north end of the flat near the base of the windmill 1706 Comment
  CHSC7631  Cirsium vulgare Beverley J. Wise 1968-8-23 16 Lassen 10 mi. N.W. of Susanville on the Las. Co. Rd. 201. 1798 Comment
  CAS-BOT-BC233914  Cistanthe umbellata Carl B. Wolf 1929-9-1 3788 Lassen Mt. Lassen National Park, between Grassy and Snag Lakes Comment
  CAS-BOT-BC233917  Cistanthe umbellata G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC233919  Cistanthe umbellata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49204 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  LA47494  Clarkia gracilis subsp. albicaulis Clare B. Hardham; 1961-6-16 7485 Lassen Gold Run Creek, S of Susanville Comment
  JEPS108559  Clarkia lassenensis L. P. Janeway 2005-7-3 8452 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout 1536 Comment
  NY999400  Clarkia lassenensis N. H. Holmgren 1980-7-4 9517 Lassen Observation Peak, south slope of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  JEPS43672  Clarkia rhomboidea Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  UC1587045  Clarkia rhomboidea G. Schoolcraft 1991-7-30 2194 Lassen e side Widow Mountain 1889 Comment
  HSC63829  Clarkia stellata Teresa Prendusi 1980-7-1 Lassen McCoy Flat, 5 mi. E of northern tip of Eagle Lake 1646 Comment
  CHSC112426  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18742 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
  JEPS126532  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC68621  Cleome platycarpa Vernon H. Oswald; Lowell Ahart 1997-5-7 8403 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. Growing in disturbed roadside gravel. 1420 Comment
  JEPS25528  Cleome platycarpa Rimo Bacigalupi with Lincoln Constance 1959-6-16 7142 Lassen 0.25 mi s U.S. Highway 395 junction with road to Smoke Creek (beside U.S. Hwy 395) 1341 Comment
  JEPS79144  Cleome platycarpa L. R. Heckard with R. Bacigalupi 1980-6-11 5248 Lassen 11.3 mi. n. Litchfield (along U.S. 395, s. of Deep Creek crossing) 1463 Comment
  SEINET3153948  Cleome platycarpa J. L. Strother 1970-5-23 951 Lassen About 6 miles N of Honey Lake, at ca. 4200 feet elevation. 1280 Comment
  CAS-BOT-BC32957  Cleomella alata C. C. (Mrs.) Bruce 1898-6-1 2364 Lassen Shumway Comment
  JEPS42688  Cleomella parviflora J. Burtt Davy Jun 17 1897-Jun 24 1897 3352 Lassen Amedee Honey Lake Vally Comment
  CAS-BOT-BC423223  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  CHSC77207  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  SEINET5767254  Cleomella plocasperma D. S. Mapes 1942-7-13 s.n. Lassen 2 1/2 miles SW of Wendel, Honey Lake Basin 1067 Comment
  UCD150400  Cleomella plocasperma Harry A. George and F. K. 1957-8-15 s.n. Lassen Honey Lake Wildlife Area, Dakin Unit. Comment
  CHSC36452  Collinsia greenei Susan H. Euing 1982-6-6 6 Lassen Pine Creek below fish trap. Flood plain-dry lake bed area. Comment
Read comments
Jun 18 2018
  CHSC23569  Collinsia parviflora W. O. Baum 1971-7-6 38 Lassen E slope of Gallatin Peak. 1950 Comment
  CHSC80278  Collinsia parviflora Jeanne Boze 1981-6-13 112 Lassen Northeast base of Gallatin Peak. 1950 Comment
  JEPS114656  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
  UC1137686  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1737 Comment
  HSC68935  Collinsia parviflora Gary Schoolcraft 1979-5-1 15 Lassen Along road between Big Springs and Shearing Corrals 1677 Comment
  RSA0117241  Collinsia parviflora K. e. Bradshaw 1939-5-27 229 Lassen Lassen Forest. S. end Black Mt. Experimental Forest, Plot 39-1. 1753 Comment
  SBBG12810  Collinsia parviflora A. I. Richardson 1961-5-30 5 Lassen 9 mi S of Eagle Lake 1402 Comment
  CHSC5903  Collinsia torreyi M. West 1946-6-24 Lassen Dow Butte Road. Eagle Lake. 1828 Comment
  UC773850  Collinsia torreyi var. latifolia L. R. Short 1936-6-25 S 455 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1752 Comment
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  CHSC25140  Collomia grandiflora R. Clicquennoi 1967-6-30 28 Lassen W central shore of Eagle Lake, 1/2 mi s of Pelican Point. 1554 Comment
  CHSC4440  Collomia grandiflora K. R. Stern 1967-6-30 2450 Lassen West central side of Eagle Lake. 1554 Comment
  OBI77560  Collomia grandiflora Anthony Baniaga 2011-7-5 419 Lassen Lassen Natl Forest. E of Willard Ck. Fredonyer Pass quad T29N R10e sec 25 NE of NW Comment
  RSA0020052  Collomia grandiflora Anthony Baniaga 2011-7-5 419 Lassen Lassen National Forest. E. of Willard Creek. 1487 Comment
  SBBG58193  Collomia grandiflora E. Rockwell -Jun-1925 802 Lassen Eagle Lake 1554 Comment
  UC1137779  Collomia grandiflora August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest/Forest and Range Exp't Station 2133 Comment
  HSC23534  Collomia grandiflora R. Carter 1967-7-13 585 Lassen S side of rd. to Eagle Lake Biology Station and Willow Creek 1585 Comment
  UC1981729  Collomia linearis Debra Valov 2010-7-17 2010102 Lassen Bieber, Lassen Co., CA;; off County Rs A2 c. 8.7 km east of Hwy 299. Comment
  CHSC6199  Collomia tinctoria J. B. Kimsey 1946-6-13 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  CHSC96716  Comarum palustre Gordon Leppig; T. LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  HSC95148  Comarum palustre Gordon Leppig 1998-7-12 934 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC71887  Consolida ajacis Vernon H. Oswald; Lowell Ahart 1998-9-8 9584 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Between the road and the marsh. 1258 Comment
  CHSC7713  Convolvulus arvensis Beverley J. Wise 1969-6-4 33 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  POM33286  Conyza canadensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CAS-BOT-BC286114  Conyza canadensis Louella Bass 1983-9-1 s.n. Lassen At Edward Bass residence, Standish Comment
  JEPS57534  Cordylanthus maritimus subsp. canescens Harry George 1963-8-15 Lassen shores of Honey Lake Comment
  CAS-BOT-BC212207  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  CHSC66384  Cornus sericea subsp. sericea Vernon H. Oswald; Lowell Ahart 1996-6-17 7810 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marsh at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  JEPS107790  Crepis acuminata Lowell Ahart, John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC581283  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2314 Lassen about a mi below summit; Black Mountain 1940 Comment
  CAS-BOT-BC290391  Crepis acuminata G. L. Stebbins, Jr.; E. B. Babcock 1936-6-7 1763 Lassen Near summit east of Red Rock 1818 Comment
  CAS-BOT-BC376483  Crepis bakeri subsp. cusickii G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-14 2331 Lassen Along road half way between Bogard Ranger Station and Harney Valley 1630 Comment
  UC581207  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2340 Lassen s-facing slope 3 mi e Champs 1780 Comment
  UC773981  Crepis intermedia L. R. Short 1935-7-9 S- 509 B Lassen Burgess Spring Experiment Range 1818 Comment
  UC581285  Crepis modocensis subsp. subacaulis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2278 Lassen Diamond Mt.; summit and e slope Comment
  CAS-BOT-BC291584  Crepis modocensis subsp. subacaulis G. L. Stebbins; J. A. Jenkins 1937-7-10 2278 Lassen Slope of Diamond Mt. 2286 Comment
  POM230947  Crepis occidentalis E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1748 Lassen Ridge east of Red Rock. 1616 Comment
  UC581194  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2303 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  RSA647829  Crepis occidentalis Marion P. Harthill 1971-6-21 209 Lassen Noble Emigrant Trail Monument, Susanville Comment
  SEINET7838833 Image available Crepis occidentalis N. H. Holmgren, P. K. Holmgren 1978-6-11 8929 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-south of Ravendale. 1707 Comment
  CHSC60814  Crepis occidentalis subsp. conjuncta Vernon H. Oswald; Lowell Ahart 1993-6-28 5606 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  CAS-BOT-BC376557  Crepis occidentalis subsp. conjuncta A. A. Heller 1938-6-23 15201 Lassen Valley east of Fredonyer Pass Comment
  CAS-BOT-BC376564  Crepis occidentalis subsp. occidentalis M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  UC581276  Crepis occidentalis subsp. occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2320 Lassen w-facing slope about 1 mi below summit; Black Mt. 1940 Comment
  UC895333  Crepis occidentalis subsp. occidentalis A. A. Heller 1938-6-23 15201 Lassen valley e Fredonyer Pass (on State Hwy 36) Comment
  CAS-BOT-BC290824  Crepis occidentalis subsp. pumila David D. Keck; J. Clausen 1935-6-25 3759 Lassen Susanville 1340 Comment
  CHSC5206  Crepis pleurocarpa 1944-6-28 Lassen Eagle Lake. 1584 Comment
  UC1951064  Cryptantha Debra Valov 2007-5-22 2007076 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  UC78406  Cryptantha affinis T. S. Brandegee 1891-7-2 Lassen Susanville Comment
  HSC31746  Cryptantha circumscissa Donald Spalinger 1974-5-16 62 Lassen 300 yds. S of intersection of Rd. A3 and H 395 1250 Comment
  JEPS94827  Cryptantha circumscissa Vernon H. Oswald and Lowell Ahart 1998-5-22 9135 Lassen 3.5 mi n of Doyle (Fort Sage Road 2.3 mi n of Hackstaff Road); Fort Sage Road 1341 Comment
  RSA716061  Cryptantha circumscissa L. Ahart, John Dittes 2005-6-1 11890 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
  CAS-BOT-BC189459  Cryptantha circumscissa var. circumscissa Elmer I. Applegate 1934-5-4 8933 Lassen Secret Valley, 20 miles S of Ravendale Comment
  UC1562830  Cryptantha humilis Barbara Ertter with Gary Schoolcraft 1987-6-16 7182 Lassen w of Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2133 Comment
  CHSC71075  Cryptantha pterocarya var. pterocarya Vernon H. Oswald; Lowell Ahart 1998-5-22 9112 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
  CHSC68850  Cryptantha simulans Vernon Oswald; Lowell Ahart 1997-6-24 8594 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  RSA123891  Cryptantha simulans G. A. Fischer, I. Johnson 1933-7-14 F- 260 Lassen Lassen Forest. 1784 Comment
  RSA164363  Cryptantha simulans Clare B. Hardham 1961-6-17 7505 Lassen Baxter Creek S of Susanville. Comment
  UC1587053  Cryptantha torreyana G. Schoolcraft 1991-7-30 2193 Lassen e side Widow Mountain 1889 Comment
  RSA123892  Cryptantha torreyana G. A. Fischer, I. Johnson 1933-7-12 F- 222 Lassen Near Sheep bedground. 1723 Comment
  SEINET10497287  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 280 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. 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
  OBI75868  Cuscuta occidentalis Anthony Baniaga 2011-8-9 492 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
  JEPS124897 Image available Cuscuta pentagona Peter Schultz 1967-7-11 67 Lassen 2 miles north of Doyle. Comment
  NY704022  Cusickiella douglasii N. H. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale 1700 Comment
  POM180742  Cycladenia humilis A. W. Kramer s.n. Lassen Prospect Peak, Lassen National Park Comment
  UC193142  Cycladenia humilis var. humilis J. G. Lemmon Lassen near Shasta (Black Cone); ; Black Cone, near Shasta Comment
  UC22937  Cycladenia humilis var. humilis Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC114167  Cyperus squarrosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49512 Lassen Elysian Valley, W of Janesville. 1325 Comment
  JEPS127269  Cyperus squarrosus Lowell Ahart, John Dittes 2016-7-13 21139 Lassen 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. Comment
  UC569547  Cyperus squarrosus H. S. Yates 1936-8-11 6065 Lassen Baxter Creek Susanville Quad., Baxter Creek 1280 Comment
  JEPS127205  Cystopteris fragilis Lowell Ahart, John Dittes 2016-6-7 21007 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  SEINET6627868  Cystopteris fragilis M. J. Williams 1970-7-4 s.n. Lassen Ash Creek, SE of Adin 1280 Comment
  CAS-BOT-BC445517  Damasonium californicum Arnold Tiehm; Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line 1698 Comment
  POM119128  Damasonium californicum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1731161  Damasonium californicum Dean W. Taylor 1974-6-14 3714 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd. Poison Lake; Modoc Plateau 1615 Comment
  POM260301  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen Overflow of Pitt River, 1 mile W of Bieber 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
  RSA245244  Damasonium californicum John Pratt 1970-6-21 33 Lassen [No locality information provided] Comment
  SEINET6188248  Damasonium californicum R. F. Thorne, Larry E. De Buhr 1975-1 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 iles south of Modoc county line. 1615 Comment
  GMDRC7740  Danthonia californica J. M. Andre, G. Clifton 1993-6-11 33421 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
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Jul 11 2013
  HSC69064  Danthonia unispicata Gary Schoolcraft 1980-7-28 332 Lassen Meadow E of Tule Mountain. 2043 Comment
  UC1567411  Deinandra lobbii G. Schoolcraft 1989-7-24 1997 Lassen w Hayden Hill Mine (along road); Susanville 1737 Comment
  UCD39136  Delphinium andersonii Beecher Crampton 1964-6-27 7093 Lassen West of Termo. Madeline Plains. Comment
  UCR244044  Delphinium andersonii Jim Andre 1993-6-1 19714 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  UC1609175  Delphinium depauperatum Vernon H. Oswald and Lowell Ahart 1993-6-28 5601 Lassen Rd. 35NO4 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley 1725 Comment
  HSC79826  Delphinium depauperatum William Rothstrom 1975-6-9 Lassen Near Day, 1.0 mi. E of large cinder pit mine 1280 Comment
  CAS-BOT-BC9942  Delphinium nudicaule A. A. Heller 1940-5-22 15663 Lassen Hill back of Westwood Cemetery on a cut over slope. This station is sevral miles west of the type station. Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 Comment
  CHSC36497  Delphinium nudicaule Theresa Costa 1982-6-3 29 Lassen Ca. .3 mi s jct forest service rds 5.16 and 5.17, ca. 5 yd w 5.16, heading toward 5-corners. Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  RSA398661  Delphinium nudicaule Christopher Davidson 1975-6-6 2722 Lassen 3.9 miles from jct of county roads 204 and 205 on road 204 along Gold Run Creek, SW of Susanville. 1395 Comment
  SEINET10675839 Image available Delphinium nudicaule A. Arthur Heller 1938-6-4 Heller 15149 Lassen More or less shaded gravelly slope in the yellow pine forest one mile east of Fredonyer Pass on Highway #36, Arid Transition Life Zone. 1707 Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  CHSC7732  Delphinium nuttallianum Beverley J. Wise 1969-5-9 85 Lassen 11.7 mi. west of Susanville on Forest Serv. 8246 off Hwy. 36. 1524 Comment
  CHSC93695  Delphinium nuttallianum Lowell Ahart; John Dittes 2005-6-2 11955 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  CAS-BOT-BC116043  Delphinium nuttallianum Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass. Comment
  CAS-BOT-BC116053  Delphinium nuttallianum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen West slope, Fredonyer Pass, 13.5 miles west of Susanville 1554 Comment
  OBI75897  Deschampsia cespitosa Anthony Baniaga 2011-8-17 508 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1978 Comment
  JEPS28061  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen 100 yds. above lake near s. shore Snag Lake; Lassen Volcanic Nat'l Park, Snag Lake 1850 Comment
  UC1037093  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1934-7-15 2211 Lassen ca. 15 mi. w. Eagle lake (Crater Lake, Lassen Nat'l Forest); Lassen Nat'l Forest, Crater Lake 2133 Comment
  UC1037258  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1933-8-2 106 Lassen ca. 8 mi. n.w. Eagle lake (Slate Creek, Lassen Nat'l Forest); Lassen Nat'l Forest, Slate Creek 1920 Comment
  UC60239  Deschampsia cespitosa subsp. cespitosa M. S. Baker and F. Nutting July 1894 Lassen Eagle Lake 1524 Comment
  UC1131558  Deschampsia danthonioides Robert W. Gardner 1937-6-20 G- 21 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UCD61873  Deschampsia danthonioides A. A. Beetle 1941-6-28 2816 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  UCD62999  Deschampsia danthonioides John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49499 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  UCD63431  Deschampsia elongata L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  CAS-BOT-BC43090  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  JEPS107794  Descurainia sophia Lowell Ahart 2005-6-2 11925 A Lassen near the Anderson Ranch home, Long Valley, about 4 3/4 air mi N of intersection of Scott Road and Hwy 70, 6.2 air mi NW of Hallelujah Junction 1459 Comment
  SD8289  Dicentra formosa Mrs. R. M. Austin Aug 1882 Lassen Comment
  CHSC61163  Dicentra uniflora Vernon H. Oswald; Lowell Ahart 1993-5-12 5374 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in forest. 1737 Comment
  CAS-BOT-BC500983  Dichelostemma multiflorum T. S. Brandegee 1892-7-30 s. n. Lassen Susanville Comment
  CHSC34409  Dieteria canescens Terrance Finn 1979-7-14 11 Lassen +/- .75 mi. from Hallelujah Junction, dirt road towards well. 1493 Comment
  CAS-BOT-BC299811  Dieteria canescens var. canescens Mrs. H. C. Cantelow 1940-10-5 s.n. Lassen About 1 1/2 mi. N.W. of Johnstonville, east of Sierra Nevada Mts. Comment
  SEINET5709536 Image available Dieteria canescens var. canescens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7711 Lassen Willow Creek. Collected along Forest Road 37N04, off of CA 139.; Willow Creek 1575 Comment
  CHSC14038  Dieteria canescens var. shastensis S. Villard 1973-7-12 62 Lassen Slopes of Galatin Peak. Comment
  JEPS30487  Dieteria canescens var. shastensis Peter H. Raven with Otto T. Solbrig 1958-6-15 13244 Lassen 5.7 mi w Westwood (on State Highway 36) Comment
  JEPS87533  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  UC1136761  Dieteria canescens var. shastensis Irwin H. Johnson 1933-7-14 F 268 Lassen Lassen Forest 1752 Comment
  UC1136762  Dieteria canescens var. shastensis L. R. Short 1936-6-25 S- 427 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  UC1609238  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  UC506907  Dieteria canescens var. shastensis George A. Fischer and Irwin H. Johnson 1933-7-14 F- 268 Lassen Lassen Forest 1752 Comment
  CAS-BOT-BC153632  Diplacus jepsonii Lassen 1927 G. S. Crew 1927-6-25 23 Lassen Norval Flat, Lassen National Forest 1747 Comment
  CAS-BOT-BC153681  Diplacus mephiticus L. G. Bennett 1967-6-23 21 Lassen Eagle Lake Biological Station Grounds 1554 Comment
  CHSC91183  Diplacus 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
  SEINET13703366  Diplacus mephiticus F. B. Headley 1915-5-28 13 Lassen Honey Lake. Comment
  SEINET201637 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8464 Lassen 50 mi SE of Susanville Comment
  CAS-BOT-BC154008  Diplacus torreyi Ira 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
  CAS-BOT-BC208723  Distichlis spicata C. S. Robinson 1928-9-18 119 Lassen Hanna Estate, Morgan Springs 1508 Comment
  CAS-BOT-BC208725  Distichlis spicata A. A. Beetle 1941-6-28 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak Comment
  CHSC31978  Distichlis spicata L. Ahart; J. T. Howell 1974-7-9 536 Lassen Along rd, 5 mi w of Susanville. 1584 Comment
  CHSC7693  Distichlis spicata Beverley J. Wise 1969-5-23 129 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd 320. 1249 Comment
  JEPS123846  Distichlis spicata Lowell Ahart, John Dittes 2015-7-14 20333 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC1533158  Distichlis spicata G. Schoolcraft 1986-9-10 1675 Lassen Along N shore of Eagle Lake 1554 Comment
  UC60225  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  UCR7793  Distichlis spicata var. nana Marilyn Malin 1968-6-20 258 Lassen Great Basin; Modoc Plateau, west side of Eagle Lake c. 100 yds. south of Bly Tunnel 1561 Comment
  UCD64624  Distichlis spicata var. stricta Verne Grant; Irving Schneider 1947-9-5 8377 Lassen Northwest shore of Eagle Lake by Sam Webb's place (Spaulding). Comment
  HSC17852  Dodecatheon alpinum M. T. Milligan 1964-7-16 135 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC559941  Dodecatheon conjugens Leo Whitney 1935-6-10 3211 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  CHSC29898  Dodecatheon jeffreyi Robin L. Ondricek 1978-7-7 92 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  CHSC57272  Downingia bacigalupii Mary Meyer 1980-7-1 Lassen Drying ditch along road in southeast area of Champs Flat. 1677 Comment
  CHSC60825  Downingia bacigalupii Vernon H. Oswald; Lowell Ahart 1993-6-28 5612 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  JEPS120905  Downingia bacigalupii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18738 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1143165  Downingia bacigalupii A. Simontacchi 1940-6-16 874 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1243994  Downingia bacigalupii John H. Weiler 1959-6-28 59304 Lassen 2.9 mi s Siskiyou County line (in Lassen County along Highway 89); Dickson Flat Comment
  UC1609180  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1993-6-28 5612 Lassen ne of Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvye Mtn); Harvey Mtn. 1798 Comment
  JEPS108474  Downingia bacigalupii Lisa Schultheis 1995-6-28 233 -95 Lassen SW of Nubeiber, off of 299; S side of road at entrance to Muck Valley Hydroelectric Plant.. Comment
  POM68157  Downingia bacigalupii Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  POM260453  Downingia bicornuta C. L. Hitchcock 1940-5-26 6645 Lassen Overflow of Pitt River, 1 mile W of Bieber. Comment
  JEPS22793  Downingia bicornuta var. bicornuta August L. Hormay 1934-5-15 Lassen 1 mi ne Halls Flat Railroad Station (on the Keddie-Nubieber (freight) branch of the W.P.R.R.) 1554 Comment
  JEPS108488  Downingia bicornuta var. bicornuta Lisa Schultheis 1996-6-28 308 -96 Lassen Between Bieber and Adin. Corner of Finley Rd. and Rt. 299. Comment
  JEPS108508  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 228 -95 Lassen W sie of Rt. 395, 3.5 mi S of Madeline. Comment
  CHSC54182  Downingia cuspidata Vernon H. Oswald 1991-5-28 4623 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  SBBG69657  Downingia elegans S. W. Hutchinson -Jun-1925 494 Lassen Bieber 1270 Comment
  SEINET3147635  Downingia elegans M. E. Jones 1897-6-22 sn Lassen 10 mi S of Amedee 1219 Comment
  RSA298985  Downingia insignis Helen-Mar Wheeler 1952-7-11 s.n. Lassen South of Madeline. Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  UCD55103  Downingia insignis Gerald Dickinson 1963-7-3 72 Lassen U.S. Highway 299; 1 mile west of Bierber. 1249 Comment
  SEINET10539558  Draba David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17801 Lassen 6 mi. N of hallelujah jct. On u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC41953  Draba albertina John Thomas Howell 1934-6-30 12132 Lassen Warner Mountains. Near Lost Lake. 2438 Comment
  CHSC61140  Draba verna var. aestivalis Vernon H. Oswald; Lowell Ahart 1993-5-12 5391 Lassen Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road. 1652 Comment
  UC1483817  Eatonella nivea G. Schoolcraft 1980-5-8 226 Lassen sw of Herlong 1255 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  CDA188  Echinochloa crus-galli O. W. Newman 1915-8-26 Lassen Susanville. Comment
  CHSC116193  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20299 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116198  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20300 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS123972  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA252429  Elatine californica R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39136 Lassen Said Valley Reservoir. Comment
  CHSC60975  Elatine chilensis Lowell Ahart 1993-5-17 6954 Lassen On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. Comment
  UCR198140  Elatine chilensis 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
  RSA0011453  Eleocharis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46985 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC113591  Eleocharis acicularis John Thomas Howell 1959-9-23 34892 Lassen Juniper Lake camp grounds, Lassen Park 2057 Comment
  UC1100703  Eleocharis parishii Malcolm A. Nobs and S. Galen Smith 1949-8-20 1490 Lassen 1 mi S of, Long Creek Doyle Comment
  UCD55302  Eleocharis parvula Ellen Dean; Gary Schoolcraft 2006-5-16 3131 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
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Oct 5 2010
  JEPS127354  Elymus caput-medusae Lowell Ahart, John Dittes 2016-7-13 21145 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS121785  Elymus cinereus B. Castro and L. P. Janeway 2012-7-2 1937 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at Skedaddle Ranch. Comment
  CAS-BOT-BC227482  Elymus elymoides John Thomas Howell; Gordon H. True 1973-8-1 50197 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CAS-BOT-BC227493  Elymus elymoides John Thomas Howell 1934-6-10 11866 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  RSA647555  Elymus elymoides Marion P. Harthill 1971-6-21 200 Lassen Susanville Comment
  SEINET12745634  Elymus elymoides F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  UC1136931  Elymus elymoides subsp. elymoides L. R. Short and J. Warren 1936-6-29 S- 461 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1820 Comment
  JEPS126479  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-30 CA 350 -043 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  JEPS126494  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-5 CA 350 -73 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
  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
  CHSC112796  Elymus glaucus Lowell Ahart; John Dittes 2013-7-23 18893 Lassen About 30 feet northeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  UCD62558  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Susanville. In city park. Comment
  CHSC111248  Elymus spicatus B. Castro; L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. 1417 Comment
  CHSC117482  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
  JEPS121791  Elymus spicatus B. Castro and L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. Comment
  SEINET5642835  Elymus spicatus Fred W. Hoffman 1946-6-8 1822 Lassen Lava beds east of Karlo, CA.; 0 Comment
  UCR244046  Elymus spicatus Jim Andre 1993-6-1 19716 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CHSC92829  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2005-6-1 11880 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS107397  Elymus trachycaulus subsp. subsecundus Lowell Ahart, John Dittes 2005-6-1 11880 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1470 Comment
  CHSC112048  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2012-7-9 18297 Lassen On dry soil, on the south side of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC69080  Elymus trachycaulus subsp. trachycaulus Gary Schoolcraft 1980-7-28 333 Lassen Meadow E of Tule Mountain. 2043 Comment
  CAS-BOT-BC81878  Ephedra viridis M. Bourell 1997-5-31 5882 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  CHSC116918  Ephedra viridis J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CHSC25297  Ephedra viridis Pauleen Broyles 1977-5-30 141 Lassen Spencer's Spring ca 8 km nne of Herlong. 1620 Comment
  CHSC7186  Ephedra viridis Lynn R Thomas 1969-3-6 9 Lassen 75 yds. W of US 395 ca. 26 mi ne of Susanville (nr rail and highway intersection at Viewland). 1347 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
  CHSC29866  Epilobium brachycarpum Robin L. Ondricek 1978-6-27 72 Lassen .6 mi n of Five Corners along road to ELFS. 1706 Comment
  HSC68917  Epilobium brachycarpum Gary Schoolcraft 1980-7-7 302 Lassen N end of Eagle Lake 1585 Comment
  JEPS121253  Epilobium brachycarpum Lowell Ahart 2013-7-22 18845 Lassen W margin of duck field, about 10 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET12541844  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC773933  Epilobium brachycarpum L. R. Short and J. Warren 1936-6-23 S- 454 Lassen Burgess Spring Experiment Range Lassen National Forest 1743 Comment
  CHSC110908  Epilobium campestre Lowell Ahart; John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  CHSC117519  Epilobium campestre Lowell Ahart; John Dittes 2016-7-13 21128 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Biebeer, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC27121  Epilobium campestre Robert A. Schlising 1978-6-28 3296 Lassen E of Eagle Lake at Dry Lake. 1645 Comment
  JEPS117579  Epilobium campestre Lowell Ahart, John Dittes 2010-7-31 16996 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  CHSC29945  Epilobium ciliatum subsp. ciliatum Robin L. Ondricek 1978-8-6 115 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  CHSC6189  Epilobium ciliatum subsp. ciliatum J. B. Kimsey 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  JEPS39248  Epilobium ciliatum subsp. ciliatum Brown and Wieslander 1922-7-30 16 Lassen Martin Sprs. Eagle Lake Comment
  UC1583987  Epilobium ciliatum subsp. ciliatum G. Schoolcraft 1990-7-11 2108 Lassen n Moon Lake (at reservoir edge); McCabe Spring 1669 Comment
  HSC68920  Epilobium ciliatum subsp. glandulosum Gary Schoolcraft 1980-7-16 315 Lassen Near Nelson Corral Reservoir 1805 Comment
  NY1001473  Epilobium ciliatum var. ciliatum V. E. Grant 1947-9-6 8388 Lassen Irrigation ditch west of Fleming Ranch headquarters, near Wendel Comment
  CHSC115607  Epilobium densiflorum Lowell Ahart; John Dittes 2015-7-13 20307 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber,, Big Valley. 1267 Comment
  UC1567379  Epilobium densiflorum G. Schoolcraft 1989-7-18 1984 Lassen s Clark's Valley Rd. (near Box Spring) 1813 Comment
  NY1000301  Epilobium glaberrimum var. fastigiatum C. B. Hardham 1969-8-28 17438 Lassen Granitic slope west of Janesville Comment
  UC773935  Epilobium hallianum L. R. Short and J. Warren 1936-6-11 S- 429 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1737 Comment
  CHSC27074  Epilobium oregonense Robert A. Schlising 1978-8-1 3333 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  CHSC61052  Epilobium oregonense Vernon H. Oswald; Lowell Ahart 1993-8-3 5741 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  HSC95313  Epilobium oregonense Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 688 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95332  Epilobium oregonense Gordon Leppig 1998-7-12 937 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC82195  Epilobium torreyi Thomas W. Nelson, Jane P. Nelson 1980-7-6 6050 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS114954  Equisetum laevigatum Lowell Ahart, John Dittes 2008-6-20 14933 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
  RSA719899  Equisetum laevigatum Michael A. Vincent, K. Levings 2006-7-29 12905 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  SEINET10530259  Equisetum laevigatum Jeffrey Huber 1971-6-11 Huber 318 Lassen 3 mi E of Westwood, on CA Hwy 36; in volcanic soils (basalt), in Pinus jeffreyi. 1608 Comment
  CHSC91598  Eragrostis cilianensis G. Douglas Barbe 1978-8-31 2425 Lassen Modoc National Forest. Roadside, Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). 1417 Comment
  CAS-BOT-BC284042  Eragrostis minor John Thomas Howell 1976-7-19 51942 Lassen Susanville, Sierra Nevada 1287 Comment
  CAS-BOT-BC481938  Eremogone kingii var. glabrescens B. J. Hammerly 1941-6-21 51 Lassen 8 mi SE of Likely on Blue Lake Road Comment
  CAS-BOT-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 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
  CHSC4897  Eriastrum signatum Bill Wilson 1967-7-4 51 Lassen Collected at Dean's Meadow, 6 mi S of Eagle Lake Biological Station. 4 mi. N of Susanville. 1950 Comment
  RSA0124148  Eriastrum signatum R. R. Halse 2004-7-21 6669 Lassen At junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford. 1274 Comment
  UC526132  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen near Plumas Junction Comment
  JEPS103167  Eriastrum signatum Beth Corbin 2002-10-2 1115 Lassen Grasshopper Valley, S of Termo-Grasshopper Road. 1633 Comment
  JEPS116872  Eriastrum sparsiflorum David Gowen 2007-7-12 784 Lassen Just off Hwy 395 south of Constantia at road crossing Long Valley Creek. Comment
  JEPS124584 Image available Eriastrum sparsiflorum M. R. Kempf 1965-7-12 290 Lassen 1 mile N. of Milburn, growing west side of road HWY 398. Comment
  NY1012936  Eriastrum sparsiflorum var. wilcoxii G. Schoolcraft 1985-7-29 1492 Lassen West slopes of Fort Sage Mountains 1585 Comment
  UC23553  Eriastrum wilcoxii M. S. Baker and Frank Nutting 1892-7-2 Lassen s side Dixey Mts. Comment
  UC506538  Eriastrum wilcoxii J. Burtt Davy Jun 17 1897-Jun 24 1897 3408 Lassen Amedie Honey Lake Valley Comment
  UC1037321  Ericameria bloomeri Leo Whitney 1934-9-9 1886 Lassen near summit Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  CHSC76085  Ericameria nauseosa var. oreophila Lowell Ahart; Vernon H. Oswald 1999-9-13 8220 Lassen Along road, about 100 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC527348  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 Lassen 3 mi from Wendel (on the road to Janesville); Honey Lake Valley 1219 Comment
  UCD54535  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2720 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CAS-BOT-BC294184  Ericameria nauseosa var. speciosa Louella Bass 1973-9-4 EV 133 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC294187  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50217 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  UC1136975  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spr. Exp. Range Lassen Forest 1755 Comment
  UC221388  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11680 Lassen 21 mi from Susanville (along roadside, s side of Honey Lake Valley); Honey Lake Valley Comment
  UC773959  Ericameria nauseosa var. speciosa L. R. Short 1936-9-14 S- 503 Lassen Burgess Spring Experiment Range Lassen Forest 1761 Comment
  SEINET201631  Erigeron aphanactis A. Cronquist, AH Holmgren 1959-6-17 8466 Lassen 50 mi SE of Susanville 1372 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
  CAS-BOT-BC293527  Erigeron aphanactis var. aphanactis P. Monnet 1913-7-6 809 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  CDA4405  Erigeron bloomeri T. C. Fuller 1963-6-1 10632 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CAS-BOT-BC294488  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-7-8 12513 Lassen Harvey Valley Comment
  GMDRC7734  Erigeron bloomeri var. bloomeri J. M. Andre, G. Clifton 1993-6-1 33411 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  CAS-BOT-BC294486  Erigeron bloomeri var. bloomeri Clarence R. Quick 1964-7-29 64 -90 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CHSC23483  Erigeron cervinus Wayne O. Baum 1971-7-12 71 -58 Lassen Slope of Gallatin Peak. 2042 Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline Comment
  CAS-BOT-BC295979  Erigeron divergens Clare B. Hardham 1969-8-28 17421 Lassen West of Janesville, Sierra Nevada Comment
  CAS-BOT-BC296848  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-11 7979 Lassen Big Valley Mts. Comment
  CHSC66373  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1996-6-17 7808 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the Susan River E of Devils Corral Trailhead and W of the 6.0 mile post. 1402 Comment
  JEPS127714  Erigeron divergens Alejandro Brambila, Michael Dolan 2016-7-20 CA 320 -169 Lassen Railroad trail north of Tule Mountain. Collection is North of gate on Modoc-Lassen county line. Comment
  JEPS97306  Erigeron divergens Vernon H. Oswald and L. Ahart 1995-8-14 7193 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
  CAS-BOT-BC295977  Erigeron divergens Margaret J. Williams 1984-6-16 84- 31 -1 Lassen Doyle Grade, County Hwy 331 2.6 mi. W of Doyle Comment
  CHSC60816  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. 1728 Comment
  CHSC68735  Erigeron elegantulus Vernon H. Oswald; Lowell Ahart 1997-5-27 8492 Lassen West side of Hwy. 139 south of Willow Creek Guard Station, 0.9 mi south of Forest Road 38N04 to Coyote Flat. Along road and adjacent slope. 1577 Comment
  CHSC87110  Erigeron filifolius var. filifolius L. P. Janeway 2001-6-20 7201 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  OBI76966  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen Natl Forest.N of 30N61, W of A21. Swain Mtn quad. T30N R8E sec 26 NW of SW 1728 Comment
  CHSC59077  Erigeron inornatus var. inornatus Vernon H. Oswald; Lowell Ahart 1992-8-25 5180 Lassen Lassen Volcanic National Park. Juniper Lake-Snag Lake Trail, ca. midway between Cameron Meadow and Snag Lake. 1935 Comment
  SEINET5708488 Image available Erigeron inornatus var. inornatus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7715 Lassen Grasshopper Valley. Collected along CA 139.; Grasshopper Valley 1586 Comment
  UC1523776  Erigeron inornatus var. inornatus Gary Schoolcraft 1981-7-21 529 Lassen about 2 mi along main road, se of Little Valley P.O. 1280 Comment
  CHSC67165  Erigeron linearis James D. Jokerst 1991-5-29 3314 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  CHSC68844  Erigeron linearis Vernon H. Oswald; Lowell Ahart 1997-6-24 8608 Lassen South of Susanville on the north side of Diamond Mtn. at slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. At roadside. 1889 Comment
  CHSC92678  Erigeron linearis L. P. Janeway; B. Castro 2005-7-10 8485 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
  CHSC77195  Erigeron nevadincola G. Schoolcraft 1998-6-30 Lassen N. slope of Ft. Sage Mtns. 1950 Comment
  CHSC5209  Erigeron philadelphicus M. West 1946-7-10 Lassen Pine Creek, Eagle Lake. 1584 Comment
  JEPS22799  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley Lassen Forest, Grass Valley 1700 Comment
  UC87588  Erigeron pumilus var. intermedius T. S. Brandegee 1892-6-28 Lassen Jamesville Comment
  CAS-BOT-BC255400  Eriogonum Mike Vasey 1990-6-30 9061 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Raod, Modoc National Forest 1500 Comment
  SEINET530700  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  CAS-BOT-BC241832  Eriogonum caespitosum B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6567 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield 1330 Comment
  OBI48168  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Rav endale 1311 Comment
  UCR92117  Eriogonum cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  SD232774  Eriogonum cernuum Greg R. Ballmer 1993-7-31 Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, ca. 2 0 5 mi. (airline) W. of Nevada border 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
  NY242508  Eriogonum collinum H. D. D. Ripley 1943-6-15 5758 Lassen Near Viewland. 1310.6 Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  CHSC50839  Eriogonum elatum var. elatum Vernon Oswald; Lowell Ahart 1990-7-25 4399 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 Comment
  CAS-BOT-BC263044  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  CAS-BOT-BC263047  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  RSA0009584  Eriogonum maculatum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  POM203841  Eriogonum marifolium J. T. Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  UC1523724  Eriogonum microthecum var. ambiguum Gary Schoolcraft 1982-8-18 898 Lassen s Doyle Grade Road (w of Doyle) 1584 Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  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
  UC1980557  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mile west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle. Comment
  POM105409  Eriogonum nudum var. deductum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  SJSU9529  Eriogonum nudum var. deductum J. W. Tilden 1960-6-27 1492 Lassen Westwood 1524 Comment
  SEINET5330904  Eriogonum nudum var. deductum M. J. Williams, G. H. True; J. T. Howell 1973-6-28 73 -EV-1 Lassen Elysian Valley. 1372 Comment
  RSA518444  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M- 4 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. Comment
  CAS-BOT-BC269826  Eriogonum nudum var. pubiflorum John Thomas Howell 1934-7-8 12498 Lassen Spalding's, Eagle Lake Comment
  CHSC23478  Eriogonum nudum var. pubiflorum Wayne O. Baum 1971-7-9 71 -80 Lassen N. slope of Gallatin Peak. 2042 Comment
  CHSC27645  Eriogonum nudum var. pubiflorum Jerry Snodgrass 1978-7-10 47 Lassen Coleman L., SE of Eagle L. 1962 Comment
  SEINET530684  Eriogonum nummulare Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  NY281931  Eriogonum ochrocephalum var. ochrocephalum N. H. Holmgren 1970-6-25 4378 Lassen North end of Peterson Mountain, near US 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). 1524.0 Comment
  JEPS87369  Eriogonum ovalifolium var. nivale Vernon H. Oswald and Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd.(33N02) 1.7 mi n Hwy 44 (e of Poison Lake, e side of Grays Valley); Grays Valley 1719 Comment
  UC412810  Eriogonum ovalifolium var. ovalifolium Franklin P. Nutting Lassen Pine Creek Comment
  HSC63562  Eriogonum prociduum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6027 Lassen Ash Valley, along branch road off Adin-Madeline road, 200 yds. from junction 1555 Comment
  CHSC12948  Eriogonum prociduum var. prociduum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5813 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CAS-BOT-BC268619  Eriogonum spergulinum var. reddingianum Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC272626  Eriogonum spergulinum var. reddingianum John Thomas Howell 1934-7-6 12446 Lassen Harvey Valley 2438 Comment
  NY283074  Eriogonum spergulinum var. reddingianum R. F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  POM105812  Eriogonum spergulinum var. reddingianum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC272628  Eriogonum spergulinum var. reddingianum H. D. Ripley; R. C. Barneby 1943-6-13 5705 Lassen South of Milford 1859 Comment
  POM105202  Eriogonum sphaerocephalum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC68755  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald; Lowell Ahart 1997-5-27 8491 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  JEPS28865  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 mi s Adin Comment
  UC1609360  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald and Lowell Ahart 1993-7-8 5674 Lassen 1.4 mi ssw Pittville Rd. (Lassen 111, 36N01) (e side of Hall's Flat Rd. (33N18), ca. 5.4 air mi nw of Poison Lake) 1694 Comment
  JEPS56418  Eriogonum sphaerocephalum var. sphaerocephalum Hilda W. Grinnell 1934-5-31 Lassen near Susanville (mouth of Piute Creek Canyon); Piute Creek Canyon Comment
  CAS-BOT-BC267894  Eriogonum umbellatum A. M. Vollmer; L. Beane 1953-7-1 102 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC267899  Eriogonum umbellatum John Thomas Howell 1976-7-20 52009 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek, Sierra Nevada 1432 Comment
  JEPS127724  Eriogonum umbellatum Alejandro Brambila, Michael Dolan 2016-8-2 CA 320 -181 Lassen Head north on unnamed road west of Holbrook Reservoir from Ash Valley Road. Comment
  JEPS85788  Eriogonum umbellatum var. modocense Roy E. Buck, Robert A. Price 1988-6-26 1029 Lassen subsidiary peak ca. 0.5 air km n main summit (ca. 30 air km nne of Susanville); Fredonyer Peak 2377 Comment
  RSA0092311  Eriogonum umbellatum var. modocense Jim M. Andre, Tasha La Doux, Senna Andre, 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. 1732 Comment
  CAS-BOT-BC265095  Eriogonum umbellatum var. nevadense Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16361 Lassen Near NE end of Eagle Lake Comment
  CAS-BOT-BC265100  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Slope south of Ravendale on U.S. Highway #395 Comment
  JEPS97420  Eriogonum umbellatum var. nevadense Vernon H. Oswald and L. Ahart 1995-6-19 6888 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Loosely cespitose perennial 1350 Comment
  NY399396  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Between Secret Valley and Ravendale. Upper Sonoran Life Zone 1524.0 Comment
  POM253245  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Grassy, gravelly slope between Secret Valley and Ravendale. 1524 Comment
  RSA62913  Eriogonum umbellatum var. nevadense B. J. Cox, David B. Dunn 1971-6-2 2605 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
  UC585250  Eriogonum umbellatum var. nevadense E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1756 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UC773862  Eriogonum umbellatum var. nevadense L. R. Short and J. Warren 1936-6-12 S- 432 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1804 Comment
  HSC17448  Eriogonum ursinum H. E. Parks, S. T. Parks Jun 1928 229 Lassen Mt. Lassen N.P., Drakesbad 1982 Comment
  CAS-BOT-BC262362  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 miles south of Omira Comment
  CHSC30591  Eriogonum vimineum Leonard Walk 1972-6-22 2 Lassen 50 yrds. N. of Eagle Lake Biology Station kitchen. 1554 Comment
  POM105135  Eriogonum vimineum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  SEINET10299456  Eriogonum vimineum Gary Schoolcraft 1982-8-18 889 Lassen Along Doyle Grade Road west of Doyle Creek 1585 Comment
  UC1032093  Eriogonum vimineum E. Sawyer 1935-6-27 240 Lassen 3.5 mi ne Beckwith Pass; Sierraville Quadrangle Comment
  UC1982142  Eriogonum vimineum Elizabeth Kempton 2007-8-15 511 Lassen Janesville, intersection of 395 and Sunnyside Rd. Comment
  UC412790  Eriogonum vimineum Franklin P. Nutting Lassen Adobe flat on n side Dixey Mts. Dixey Mts. Comment
  CAS-BOT-BC262360  Eriogonum vimineum H. D. Ripley; R. C. Barneby 1943-6-15 5763 Lassen N.-E. of Viewland 1341 Comment
  SDSU7202  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2.0 Miles north of Janesville. 1219 Comment
  SEINET3160096  Eriogonum vimineum subsp. vimineum L. S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  HSC95298  Eriophorum gracile Gordon Leppig, Tony LaBanca 1997-6-29 531 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC12440  Eriophyllum Robert W. Severin 1969-6-19 25 Lassen 3/4 mi. n E.L.B.S. 1569 Comment
  HSC81546  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 5997 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC604680  Eriophyllum lanatum var. achilleoides Farris Farris 1935-5-30 Lassen four mi se Susanville 1341 Comment
  CAS-BOT-BC301530  Eriophyllum lanatum var. integrifolium Louella Bass 1973-5-25 39 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC301532  Eriophyllum lanatum var. integrifolium 1927-7-1 50 Lassen Lassen National Forest. Bogard Ranger Station 1712 Comment
  OBI76976  Eriophyllum lanatum var. integrifolium Anthony Baniaga 2011-6-20 386 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  UC1283706  Eriophyllum lanatum var. integrifolium Beecher Crampton 1964-6-25 7068 Lassen State Hwy 44 25 mi nw Susanville; Lassen National Forest, Bogard Ranger Station 1722 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  SEINET10673285  Eriophyllum lanatum var. integrifolium Paul Gallian, David B. Dunn 1971-6-2 Gallian 472 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC116092  Erodium cicutarium Lowell Ahart; John Dittes 2015-7-13 20320 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
  UC1130323  Erodium cicutarium A. Simontacchi 1940-6-8 832 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 Comment
  JEPS124540 Image available Erodium cicutarium Laurel Loeblich 1964-6-30 58 Lassen 19 mi. north of Halleluja Junction (highways 40 and 395) on 395; 1 1/2 mi. south of Doyle. Comment
  UC1487305  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  CDA38323  Eryngium articulatum M. Pryor, E. E. Fix 1961-8-9 s.n. Lassen 1 mile north of Bieber. 0 Comment
  UC1533163  Erysimum capitatum G. Schoolcraft 1986-4-28 1529 Lassen lower w slopes Ft. Sage Mtns. 1432 Comment
  CHSC99238  Erysimum repandum Lowell Ahart; John Dittes 2008-6-20 14900 Lassen About 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC55198  Erysimum repandum John Thomas Howell 1977-6-23 52397 Lassen Northeast of Susanville on road to Eagle Lake. Comment
  CHSC91311  Erythranthe arvensis Lowell Ahart; John Dittes 2005-6-1 11900 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  RSA0049634  Erythranthe inflatula Dean Wm. Taylor 2012-6-6 21224 Lassen Moll Reservoir (ca.10 air miles E of Adin), west side of the reservoir 1603 Comment
  CHSC64897  Erythranthe latidens Vernon H. Oswald; Lowell Ahart 1995-6-19 6887 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Modoc Plateau. 1350 Comment
  CAS-BOT-BC153610  Erythranthe moniliformis Louella Bass 1973-6-17 124 Lassen Elysian Valley Comment
  CHSC43496  Erythranthe primuloides Lowell Ahart 1974-7-9 521 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  SEINET3836923 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Pratville, Clear Creek 1524 Comment
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 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
  CDA3709  Euclidium syriacum Lee Wheeler 1955-6-24 Lassen Bieber area. 0 Comment
  SEINET11989048  Euclidium syriacum Unknown 1966-1 712 Lassen Frosty Acres ranch, at end of Albaugh Rd, 0.6 mi W of jct with Bassett Rd (ca 2 mi S of US 299 & 4 1280 Comment
  CDA14324  Euphorbia crenulata B. Corbin 1998-7-23 s.n. Lassen Lassen National Forest; Hwy 36, immed. E of junction w/Hwy 147, on Lassen NF. 0 Comment
  CDA20565  Euphorbia virgata C. Pirosko 2005-7-28 PDR 1303859 Lassen Modoc Plateau; Eagle Brothers Ranch, 20 mi S of Susanville off Hwy 395. 0 Comment
  UCD142354  Euphorbia virgata Fay Roberts 1938-8-21 s.n. Lassen Bieber. 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
  CAS-BOT-BC312105  Eurybia integrifolia Alice Eastwood 1912-8-22 1914 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  CAS-BOT-BC310645  Euthamia occidentalis Louella Bass 1980-8-29 s.n. Lassen Standish Comment
  CAS-BOT-BC278459  Festuca idahoensis John Thomas Howell 1934-6-14 12169 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC60867  Festuca idahoensis Vernon H. Oswald; Lowell Ahart 1993-6-28 5585 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. In a meadow. 1731 Comment
  CHSC60932  Festuca idahoensis Vernon H. Oswald; Lowell Ahart 1993-7-8 5664 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Woods between the road and the railroad. 1709 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
  POM112027  Festuca idahoensis Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA0037004  Festuca idahoensis Lowell A. Ahart, John Dittes 2008-6-19 14880 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
  RSA715621  Festuca idahoensis L. Ahart, John Dittes 2005-6-1 11880 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1471 Comment
  UC1026711  Festuca idahoensis Leo Whitney 1935-6-23 3295 Lassen Camp 10, Fruit Grower's Supply Company Comment
  UC1136814  Festuca idahoensis George A. Fischer and Irwin H. Johnson 1933-7-12 F 216 Lassen Lassen National Forest 1722 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
  CHSC112779  Festuca myuros Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18784 Lassen Along a fence on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS71219  Festuca rubra Brown and Wieslander 1922-7-23 80 Lassen Comment
  UCD66348  Festuca rubra L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  CHSC60393  Fragaria virginiana Mary Ann Showers 1992-6-12 2521 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  POM76343  Fraxinus dipetala C. C. Bruce 1897-7-3 s.n. Lassen Janesville(?), below Prattville 1372 Comment
  CHSC4503  Fremontodendron californicum subsp. californicum C. Glascock 1965-5-15 419 Lassen 12.4 mi. w of Mineral R. S. on Hwy. 36 at n roadside. Comment
  HSC26684  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19220 Lassen 3 mi. N of Westwood Comment
  UC1134589  Fritillaria atropurpurea K. E. Bradshaw 1939-3-27 232 Lassen s end of Black Mountain Experimental Forest, Lassen National Forest Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1752 Comment
  CAS-BOT-BC504437  Fritillaria atropurpurea John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49174 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  RSA59761  Fritillaria pudica E. K. Balls 1950-5-18 14768 Lassen Above Ash Creek Public Camp., off rd. from Adin to Madeline. 1616 Comment
  CHSC117272  Galium aparine Lowell Ahart; John Dittes 2016-7-15 21223 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
  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
  HSC63933  Galium bifolium Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak 2195 Comment
  CHSC59813  Galium multiflorum Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In rocks on lower Balls Canyon wall. 1341 Comment
  UC1479580  Galium multiflorum G. Schoolcraft 1980-6-6 253 Lassen sw Herlong; Bird Canyon area 1341 Comment
  SEINET12495958  Galium multiflorum var. multiflorum G. Schoolcraft 1999-7-12 2857 Lassen North slope of Tulehead canyon near NV stateline 1737 Comment
  RSA0105575  Galium trifidum subsp. columbianum Lowell Ahart, John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD121940  Galium trifidum subsp. subbiflorum John Thomas Howell 1959-9-23 34886 Lassen North end of Juniper Lake. 2057 Comment
  CHSC60407  Galium trifidum var. pacificum Mary Ann Showers 1992-6-13 2552 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CDA18258  Gayophytum diffusum subsp. parviflorum G. D. Barbe 1974-8-2 1920 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET10453071  Gayophytum diffusum subsp. parviflorum Mary Susan Taylor 1982-8-19 Taylor 5023 Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  POM196436  Gayophytum heterozygum A. H. Kramer s.n. Lassen Prospect Peak Comment
  UC303066  Gayophytum heterozygum Pearl Safford Lassen Susanville [uncertain locality] 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
  SEINET10936377  Gayophytum ramosissimum David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17752 Lassen 3 mi s of hallelujah jct on us hwy 395 & calif 70; along roadside and in artemesia-grassland field. Comment
  UC726252  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen 2 mi e Westwood 1524 Comment
  JEPS28803  Gentianella amarella subsp. acuta George W. Gillett 1957-9-4 1130 Lassen 0.25 mi below Widow Lake (near Butte Lake, on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  POM88686  Geranium pusillum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC773888  Geranium viscosissimum L. R. Short and Wm. Gansberg 1936-6-12 S- 433 Lassen Burgess Spring Experiment Range Lassen Forest 1807 Comment
  CHSC71389  Geranium viscosissimum var. nervosum Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9261 Lassen Forest Route 38N04 between Hwy. 139 and Williams Reservoir 1.2 mi east of the road to Smith Flat, 2.0 mi northeast of Hwy. 139 at Willow Creek Campground. 1664 Comment
  POM91888  Geum aleppicum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CHSC64851  Geum triflorum Vernon H. Oswald 1995-6-26 6943 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  JEPS60511  Geum triflorum Brown and Wieslander 1922-7-23 22 Lassen Eagle Lake, Martin Springs Eagle Lake; , Martin Springs 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
  RSA122289  Geum triflorum var. ciliatum K. e. Bradshaw 1939-5-27 25210 Lassen Near S end of Black Mtn EF Plot 39-4. 1738 Comment
  JEPS94830  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-5-22 9107 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains 1371 Comment
  UC1093640  Gilia inconspicua Herbert L. Mason 1957-7-5 14716 Lassen town s Madeline (Madeline Plains); Madeline Plains (town s of Madeline) Comment
  CHSC48652  Gilia modocensis Vernon Oswald 1986-5-28 2078 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  RSA104286  Gilia modocensis Verne Grant, Alva Grant 1956-5-17 9796 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  SEINET3087473 Image available Gilia salticola Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert. 1448 Comment
  RSA469630  Gilia sinuata Christopher Davidson 1975-6-7 2756 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SD135571  Gilia sinuata John Thomas Howell, Gordon H. True, Margaret Williams 1973-5-12 49156 Lassen Janesville, in cemetary. 1295 Comment
  HSC95337  Glyceria borealis Gordon Leppig, J. Cromwell 1997-7-27 624 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  JEPS121245  Gnaphalium palustre Lowell Ahart, John Dittes 2013-7-22 18861 Lassen 30 yards S of the man-made pond, about 120 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  CAS-BOT-BC302592  Gnaphalium palustre George W. Gillett 1957-9-4 1124 Lassen Lassen Volcanic National Park. Widow Lake 2072 Comment
  CHSC29864  Gratiola ebracteata Robin L. Ondricek 1978-8-9 123 Lassen In mud at the ne edge of Mahogany Lake. 2057 Comment
  RSA772749  Gratiola heterosepala Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47210 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UC444903  Gratiola neglecta Milo S. Baker 1899-8-24 Lassen Carmichael's Mill Big Valley (Big Valley) Comment
  CHSC30600  Grayia spinosa L. J. Dawson 1975-7-7 41 Lassen Ca. 500 yd e of Horselake, playa lake. 1584 Comment
  CHSC31131  Grayia spinosa J. S. White 1980-4-14 118 Lassen On 2% s slope, 1 mi ne of Wendel. 1295 Comment
  UC1136429  Grayia spinosa C. W. Hanks 1934-9-25 88 Lassen near the Plumas Nat'l Forest Long Valley; Sierraville Quad., Long Valley Comment
  UC1537382  Grayia spinosa Gordon H. True Jr. 1936-6-26 551 Lassen flats s.e. Standish; Honey Lake Valley 1219 Comment
  CHSC117540  Grindelia nana Lowell Ahart; John Dittes 2016-7-13 21197 Lassen Drying strand of the pond near the overflow, 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
  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
  RSA719893  Gypsophila paniculata Michael A. Vincent, K. Levings 2006-7-29 112911 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  UCD98139  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CDA34391  Gypsophila paniculata Anonymous 1987-6-17 Lassen Off US 395 near Janesville. 0 Comment
  SEINET10837176  Hackelia bella Katherine L. Morris 1973-5-25 Morris 245 Lassen Collected 13.7 mi NW of the junction of Hwy 36 & 44 on Hwy 44, in an area of yellow pine, fir and Ribes. Comment
  UC1587098  Hackelia californica G. Schoolcraft 1991-7-30 2197 Lassen e slope of Widow Mountain 1859 Comment
  POM126235  Hackelia cusickii Franklin P. Nutting s.n. Lassen Dixey Mountains Comment
  UC1035997  Hackelia cusickii Helen K. Sharsmith 1955-6-22 4496 Lassen 5 mi beyond Blue Lake (on road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UCD98891  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  CHSC12456  Hastingsia alba Robert W. Severin 1969-6-26 34 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach; 3 mi. s of E. L. B. S. 1645 Comment
  JEPS78105  Helianthus annuus G. W. Zamzow 1972-7-18 87 Lassen beside Hwy 395 16.8 mi s intersection with Highway 36 1280 Comment
  CHSC71860  Helianthus bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Roadside. 1255 Comment
  GMDRC7736  Helianthus cusickii J. M. Andre, G. Clifton 1993-6-1 33413 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
  RSA17683  Helianthus cusickii Elmer I. Applegate 1934-5-4 8927 Lassen South end of Secret Valley Comment
  RSA38474  Helianthus cusickii P. A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale. 1311 Comment
  CHSC68846  Hemizonella minima Vernon Oswald; Lowell Ahart 1997-6-24 8592 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  SEINET11197274 Image available Hemizonella minima G. Schoolcraft 1997-6-26 2601 Lassen W of Hwy 395 between Janesville and Milford 1676 Comment
  SJSU8133  Hemizonella minima J. W. Tilden 1960-6-27 1500 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  SEINET8734813 Image available Hemizonia pungens subsp. pungens Unknown 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  CHSC77177  Heracleum lanatum G. Schoolcraft 1997-7-30 2618 Lassen W slope of Dimond Mtn. 1950 Comment
  SEINET11119304  Heracleum lanatum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CHSC61154  Hesperochiron californicus Vernon H. Oswald; Lowell Ahart 1993-5-12 5377 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood), at a large, meadowy flat covered with dwarf sagebrush and scattered small pines. 1729 Comment
  HSC29978  Hesperochiron californicus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19191 Lassen Harvey Valley near Cone Springs Comment
  UC1037238  Hesperochiron californicus Leo Whitney 1935-6-20 3253 Lassen Lassen Nat'l Forest, Fruit Grower's Supply Company, Camp 10 Comment
  UC124518  Hesperochiron californicus T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC7685  Hesperochiron pumilus Beverley J. Wise 1969-5-9 46 Lassen 10.5 mi. west of Susanville on Forest serv. 8246 off Hwy. 36. 1524 Comment
  JEPS19755  Hesperolinon micranthum Rimo Bacigalupi with S. Galen Smith 1957-6-28 5995 Lassen just e U. S. Highway No. 395 (7.0 mi n of Madeline (about a mi n of Sage Hen siding on Southern Pacific RR line)) Comment
  POM204157  Hesperolinon micranthum J. T. Howell 1934-6-10 11887 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  CAS-BOT-BC280679  Hesperostipa comata Margaret Williams; Steven Williams 1974-7-26 74 -L-43 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 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
  NY783486  Heuchera rubescens G. Schoolcraft 1979-6-21 82 Lassen Wendel Canyon 1585.0 Comment
  CAS-BOT-BC312417  Hieracium albiflorum Clare B. Hardham 1971-8-22 18378 Lassen Diamond Mountain 2133 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
  POM36066  Hieracium albiflorum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1136852  Hieracium albiflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen <National> Forest 1737 Comment
  UC92024  Hieracium albiflorum unknown 1892-7-26 Lassen Milford Comment
  CAS-BOT-BC318714  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  UC1523774  Hieracium scouleri Gary Schoolcraft 1981-7-8 500 Lassen w of Eagle Lake; Coulthurst Flat 1828 Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  UCD170233  Holodiscus discolor 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
  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
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  UC1024802  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1935-6-23 3291 Lassen Camp 10 Fruit Grower's Supply Company Lassen National Forest Comment
  UC1100324  Hordeum brachyantherum subsp. brachyantherum Malcolm A. Nobs, S. Galen Smith 1949-7-21 1055 Lassen 4 mi N of Madelaine Comment
  UC53616  Hordeum brachyantherum subsp. brachyantherum J. Burtt Davy Jun 17 1897-Jun 24 1897 3366 Lassen Adobe Meadows Honey Lake Valley, Adobe Meadows Comment
  UC53617  Hordeum brachyantherum subsp. brachyantherum M. S. Baker and Frank Nutting 1894-7-4 Lassen Dixey Valley Comment
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  UC570171  Hordeum jubatum H. S. Yates 1936-8-11 6075 Lassen Baxter Creek Susanville Quad., Baxter Creek 1280 Comment
  UC188782  Hordeum marinum subsp. gussoneanum Milo S. Baker Lassen n side Dixie Mountains; n side Dixie Mountains Comment
  CAS-BOT-BC284896  Hordeum murinum subsp. leporinum John Thomas Howell 1973-7-10 49801 Lassen Susanville 1295 Comment
  UC538008  Horkelia fusca subsp. tenella Leo Whitney 1938-7-3 3038 Lassen Bogard Ranger Station Lassen National Forest 1767 Comment
  CHSC71324  Horkelia tridentata subsp. tridentata Vernon H. Oswald 1998-6-22 9229 Lassen Champs Flat Rd. (A-21) 1.6 mi north of Hwy. 44, ca. 18 air mi north of Westwood. 1764 Comment
  SEINET5342517  Hornungia procumbens N. H. Holmgren, P. K. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CHSC66386  Hosackia crassifolia var. crassifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7778 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Growing on a brushy slope on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  NY170060  Hutchinsia procumbens A. Tiehm 1980-5-29 5749 Lassen N end of Honey Lake Valley, just N of Hot Springs, 1.1 air mi NNW of Wendel. 1231.4 Comment
  CHSC61156  Hydrophyllum capitatum var. alpinum Vernon H. Oswald; Lowell Ahart 1993-5-12 5378 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood), at a large, meadowy flat. 1729 Comment
  UC1567386  Hydrophyllum capitatum var. alpinum G. Schoolcraft 1989-5-8 1872 Lassen about 1 mi e Silva Flat Reservoir 1737 Comment
  UC773900  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen Burgess Spring Experiment Range; Lassen Forest 1752 Comment
  POM95280  Hymenolobus procumbens Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  RSA88526  Hypericum androsaemum P. H. Raven 1951-7-27 3627 Lassen Lake Ediya Comment
  SEINET10472162  Hypericum formosum subsp. scouleri Mary Susan Taylor 1974-1 Taylor 283 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  HSC69298  Idahoa scapigera Gary Schoolcraft 1980-4-8 203 Lassen E side of Schaffer Mtn., 0.25 mi. W of Hwy. 395 1463 Comment
  NY52522  Iliamna bakeri G. Schoolcraft 1984-8-27 1371 Lassen Eastern slopes of Little Hat Mtn. 1981.2 Comment
  JEPS808  Ipomopsis aggregata Brown and Wieslander 1922-6-19 1 Lassen Martin Springs Eagle Lake Comment
  UC908152  Ipomopsis aggregata Loyd Swift 1928-6-12 Lassen Hall's Flat Lassen National Forest Comment
  CHSC13883  Ipomopsis aggregata subsp. formosissima S. Villard 1973-7-12 65 Lassen Gallatin Peak. 1066 Comment
  UC1523747  Ipomopsis congesta Gary Schoolcraft 1981-7-15 460 Lassen Ash Valley 1539 Comment
  CHSC63410  Ipomopsis congesta subsp. congesta V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6354 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  CHSC75515  Ipomopsis congesta subsp. congesta Vernon H. Oswald; Lowell Ahart 1999-6-9 9745 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  JEPS94604  Ipomopsis congesta subsp. congesta Vernon H. Oswald and Lowell Ahart 1997-5-27 8493 Lassen w side of Hwy 139 s Willow Creek Guard Station (0.9 mi s of Forest Rd. 38N04 to Coyote Flat) 1577 Comment
  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
  CHSC4936  Iris missouriensis A. E. Anderson 1967-5-24 33 Lassen In Murrer's Upper Meadow, 4 mi. se Eagle Lake Biological Sta. 1554 Comment
  RSA181824  Iris missouriensis H. N. Metcalf, Jack C. Wilson 1965-7-1 65 -23 Lassen Southeast of Susanville, on back road to Janesville Comment
  CAS-BOT-BC69981  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake Campground, Lassen Park. 2057 Comment
  HSC28862  Iva axillaris D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19298 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  SD64329  Iva axillaris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395. 1675 Comment
  UCD54548  Iva axillaris Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2733 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  UC1537066  Iva axillaris subsp. robustior Gordon H. True Jr. 1936-6-21 517 Lassen se of Litchfield; Honey Lake Valley 1219 Comment
  CDA20368  Iva axillaris var. robustior D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC64852  Ivesia paniculata Vernon H. Oswald 1995-6-26 6947 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
  SEINET3860245  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 mi W of Madeline.; 0 Comment
  RSA0005626  Ivesia paniculata Thomas W. Nelson, J. P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 miles east of Adin. 1555 Comment
  SEINET10891010 Image available Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 Nelson 5984 Lassen T38N, R11W, S. 31 & 32. Ash Valley along Adin-Madeline Rd. 16 miles east of Adin. Sagebrush steppe. 1554 Comment
  CHSC30562  Juncus balticus Sori H. Shad 1970-7-1 5 Lassen Found on the side of spring above Gallaten Beach. 2438 Comment
  CHSC5267  Juncus balticus 1944-6-26 Lassen Eagle Lake. 1584 Comment
  UC648318  Juncus balticus Leo Whitney 1934-8-2 1970 Lassen Bridge Creek Camp Lassen National Forest 1737 Comment
  CHSC91305  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2005-6-2 11957 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
  JEPS121285  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2013-7-23 18907 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCR88026  Juncus confusus J. T. Howell, G. H. True 1973-8-1 50171 Lassen Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  CHSC117203  Juncus hemiendytus var. hemiendytus Lowell Ahart; John Dittes 2016-6-7 20991 Lassen West edge of pond, 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC110769  Juncus mertensianus Clare B. Hardham 1969-8-28 17441 Lassen Sierra Nevada. West of Janesville. 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
  JEPS28706  Juncus nevadensis George W. Gillett 1957-7-28 934 Lassen Widow Lake Lassen Volcanic National Park 2072 Comment
  UCD141628  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen Skedaddle Mountains. 1828 Comment
  SEINET3881686  Juncus sphaerocarpus Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville.; 0 Comment
  CHSC106359  Juncus trilocularis Lowell Ahart; John Dittes 2010-7-31 17026 Lassen About 20 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS121379  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, yellow pine forest Comment
  CHSC3494  Juniperus californica Roger Jaegel 1966-5-14 152 Lassen Located twenty-two miles north of Susanville, along the bank of Eagle Lake at C. S. C. Biological Station. Comment
  SD139428  Juniperus grandis F. C. Vasek 1962-9-3 day 2 Lassen State highway 36, 3.6 miles west of Ranger Station, west of Susanville 1525 Comment
  CHSC5037  Juniperus occidentalis L. B. Barlow 1967-7-16 131 Lassen Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC66  Juniperus occidentalis K. McKenzie 1928-4-10 Lassen Near Bieber in Big Valley. Comment
  HSC1271  Juniperus occidentalis R. H. Berg 1963-4-6 37 Lassen 10 mi. N of Susanville Comment
  UCR164307  Juniperus occidentalis Maile Neel 2000-4-29 G- 01 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  UCR1818  Juniperus occidentalis subsp. australis Frank C. Vasek 1962-9-3 620903- 04 Lassen Calif. Hwy 36, 3.6 mi west of the Ranger Station, west 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
  UCR4282  Juniperus occidentalis var. australis Frank C. Vasek 1965-8-31 650831- 06 Lassen 3.8 mi west of the Ranger Station at Susanville Comment
  SEINET10719654  Juniperus occidentalis var. occidentalis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 132 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  UCR3634  Juniperus osteosperma Frank C. Vasek 1964-8-13 640813- 05 Lassen US Hwy 395, 2.5 mi east of the Sierra Co. line Comment
  SEINET11064452  Juniperus osteosperma D. Charlet 1993-7-13 1581 Lassen Fort Sage Mountains at OHV trailhead. 1490 Comment
  CHSC29939  Kelloggia galioides Robin L. Ondricek 1978-6-14 55 Lassen 1.8 mi E of Coleman Rd. on Lassen Co. Rd. 1950 Comment
  HSC69049  Kelloggia galioides Gary Schoolcraft 1979-7-3 111 Lassen 4.3 mi. up the road from Observation Peak 2134 Comment
  UC303069  Kelloggia galioides Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC65307  Kochia scoparia Vernon Oswald; Lowelll Ahart 1995-8-14 7172 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  CAS-BOT-BC180803  Kochia scoparia Louella Bass 1981-7-21 s.n. Lassen Standish Comment
  RSA715671  Koeleria macrantha L. Ahart, John Dittes 2005-6-1 11860 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 on Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1609258  Koeleria macrantha Vernon H. Oswald and Lowell Ahart 1993-6-28 5586 Lassen e Poison Lake (Harvey Valley Rd. (33N02) 1.2 mi n of Hwy 44, e side of Grays Valley); Grays Valley, e of Poison Lake 1731 Comment
  UC53716  Koeleria macrantha M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  UC60736  Koeleria macrantha M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  UCD85987  Koeleria macrantha R. Tofsrud 1947-7-1 214 Lassen 13 miles E of Madeline. Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  CAS-BOT-BC340319  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen About a mile east of Westwood 1524 Comment
  UC726003  Kyhosia bolanderi A. A. Heller 1938-9-1 15342 Lassen about 2 mi e of Westwood 1524 Comment
  CHSC5032  Lactuca serriola L. B. Barlow 1967-7-6 96 Lassen 2 mi. west of Murrer's Ranch turn off, 14.9 mi. north of Susanville, Highway 139. 1463 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
  UC74070  Lactuca tatarica subsp. pulchella J. Burtt Davy 1897-6-17 Lassen Comment
  UC1924230  Lagophylla ramosissima Debra Valov 2005-8-20 2005216 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CDA18264  Lagophylla ramosissima subsp. ramosissima G. D. Barbe 1974-8-2 1926 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CHSC99304  Lamium amplexicaule Lowell Ahart; John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS67993  Lappula redowskii W. L. Jepson 1918-8-2 7765 Lassen Beckwith Pass 1463 Comment
  CHSC112414  Lasthenia glaberrima Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18739 Lassen Near a drainage filled with dirt from construction of a pond, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA0045638  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about, 5.0 miles (air) northeast of Bieber. 1262 Comment
  SEINET10543694  Lathyrus David B. Dunn 1971-6-2 Dunn 17753 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc. 1372 Comment
  CHSC7669  Lathyrus brownii Beverley J. Wise 1969-5-9 58 Lassen 10.5 mi West of Susanville on Forest service rd. no. 8246 off Hwy 36. 1615 Comment
  UC1584016  Lathyrus lanszwertii var. aridus G. Schoolcraft 1990-5-15 2043 Lassen about 2 mi s Nubieber; John's Valley 1402 Comment
  CDA19744  Layia glandulosa D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC106572  Layia glandulosa Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 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
  SEINET11447828 Image available Layia glandulosa F. B. Headley 1915-5-28 s.n. Lassen Honey lake Comment
  UCSB30244  Layia glandulosa Hardham, Clare 1961-6-16 Lassen Gold Run Creek, south of Susanville Comment
  CDA8139  Layia glandulosa Vernon H. Oswald & Lowell Ahart 1998-6-4 9143 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. Comment
  SEINET11807266  Layia glandulosa N. H. Holmgren, Holmgren, P. K. 1980-1 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  UC55668  Lemna minuscula Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley, Cold Springs Cold Springs; Willow Creek Valley, Cold Springs Comment
  HSC95315  Lemna minuta Gordon Leppig, Tony LaBanca 1997-6-29 526 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS114851  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
  RSA318598B  Lemna turionifera Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 Comment
  CHSC71871  Lepidium appelianum Vernon H. Oswald; Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Roadside. 1258 Comment
  SFV1437  Lepidium appelianum I. L. Wiggins, D. B. Wiggins 1961-6-16 16529 Lassen 4.1 miles east of Bieber. 1265 Comment
  CAS-BOT-BC88820  Lepidium campestre Louella Bass 1973-6-15 110 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CDA42959  Lepidium chalepense L. Ahart, John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. Comment
  CAS-BOT-BC88939  Lepidium dictyotum Arnold Tiehm 1980-5-29 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air mile north-northwest of Wendel. 1231 Comment
  CAS-BOT-BC89720  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen On east side of road, Highway 395 to Lichtenfield, 4.7 miles south of Ravendale, Madelaine Plains. Comment
  CDA3793  Lepidium latifolium Lee Wheeler 1962-8-15 Lassen Ravendale area. 0 Comment
  CHSC99742  Lepidium perfoliatum Lowell Ahart; John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UCD115849  Lepidium perfoliatum R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. Comment
  UCD115855  Lepidium perfoliatum Grady L. Webster 1989-5-13 7713 Lassen 2.5 mi E of Beckworth Pass. 1493 Comment
  JEPS126521  Leptosiphon bolanderi Lowell Ahart, John Dittes 2016-6-7 20979 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 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
  CHSC44326  Leptosiphon harknessii Lowell Ahart; John Thomas Howell 1974-7-9 518 Lassen Along the edge of Eagle Lake Road, near the south-west side of Eagle Lake. 1584 Comment
  GMDRC6950  Leptosiphon harknessii J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31424 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  UC1553405  Leucocrinum montanum Gary Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  CAS-BOT-BC508365  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen Along Hwy. 139 n. of Said Valley Reservoir 1676 Comment
  HSC38587  Leucocrinum montanum J. P. Smith, J. O. Sawyer 1971-5-23 Lassen 3 mi. N of junction of Hwy. 139 and turnoff to Thermo Comment
  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
  JEPS103214  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mile N of Sagehen Summit on W side of Hwy 395 1706 Comment
  JEPS126490  Leymus cinereus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-14 CA 350 -76 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the Skedaddle Road, head uphill to the end of private property squares. Comment
  JEPS127710  Leymus cinereus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -165 Lassen Cold Spring Road N after Dorsey Butte. Comment
  RSA152594  Leymus cinereus I. L. Wiggins, Dorothy Wiggins 1961-6-11 16336 Lassen On hillside 13.5 mi. of Susanville Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  CAS-BOT-BC274467  Leymus triticoides John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49522 Lassen Elysian Valley, west of Janesville 1325 Comment
  SEINET239966 Image available Leymus triticoides G. L. Clifton 1996-6-5 34629 Lassen East of Herlong close to the railroad. 1234 Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  JEPS28660  Ligusticum grayi George W. Gillett 1957-7-21 870 Lassen Lassen Volcanic Nat'l Park, Cameron Meadow 1950 Comment
  POM119423  Lilaea scilloides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC485771  Lilium parvum H. E. Parks Jun 1928 222 Lassen Drakesbad; Lassen National Park Comment
Read comments
Dec 13 2006
  CAS-BOT-BC246147  Limosella aquatica R. F. Thorne; C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir 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
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1609099  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1993-6-28 5602 Lassen Rd 35N04 at Aspen Well n of Hwy 44 on the nw edge Harvey Valley (ne of Poison Lake); ne of Poison Lake 1725 Comment
  JEPS96128  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, edge of Papoose Creek where it leaves the N end of the meadow 1633 Comment
  JEPS107873  Linanthus ciliatus Lowell Ahart, John Dittes 2005-6-2 11936 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
  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
  UCR208968  Linanthus ciliatus Lowell Ahart 2005-6-2 11936 Lassen about 1.5 miles NE of the Anderson Ranch home, Long Valley, c. 6 miles (air) north of the intersection of Scott Road and Hwy 70, 7.5 miles (air) northwest of Halleluja Junction 1601 Comment
  CHSC92715  Linanthus pungens L. P. Janeway; B. Castro 2005-7-10 8479 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
  UC1553388  Linaria genistifolia subsp. dalmatica G. Schoolcraft 1988-8-23 1852 Lassen sw corner of Chestnut and Grand in Susanville Susanville 1310 Comment
  CDA6345  Linaria genistifolia subsp. dalmatica T. C. Fuller 1968-6-12 17236 Lassen Corut Street & Miller Road, southwest Susanville. 0 Comment
  POM111784  Lipocarpha micrantha C. C. Bruce 1897-1 s.n. Lassen Susanville? Comment
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Jan 23 2011
  CAS-BOT-BC428416  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen Between Susanville and Janesville Comment
  RSA0037174  Lithospermum arvense Lowell A. Ahart, John Dittes 2012-7-11 18351 Lassen North edge of a farmed field, on the south side of the highway, about 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittville, 3955 feet east of Lassen-Shasta County Line, Fall River Valley. 1205 Comment
  SBBG125299  Lithospermum arvense L. Ahart, J. Dittes 2012-7-11 18351 Lassen N edge of a farmed field, S side of hwy, ca. 100 yards E of Cable Rd and Pittville Rd, 2.16 mi NNE of Pittville, 3955 feet E of Lassen-Shasta County Line, Fall River Valley 1205 Comment
  JEPS21376  Lithospermum ruderale Brown and Wieslander 1922-6-13 64 Lassen Martin Springs Eagle Lake (Eagle Lake) Comment
  UC614436  Lomatium bicolor var. leptocarpum L. Constance 1938-6-11 2327 Lassen 5 mi. s.w. Susanville 1371 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
  POM78249  Lomatium donnellii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1776682  Lomatium hendersonii G. Schoolcraft 1996-3-28 2516 Lassen Sage Hen summit near Lassen/Modoc county line 1463 Comment
  CHSC57338  Lomatium macrocarpum B. G. Clark 1987-4-15 21 Lassen Slope 60 ft north side of Paul Bunyan Rd. 0.5 mi east of jct with Paiute Lane, Susanville. 1280 Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 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
  CHSC42626  Lomatium nudicaule Vernon Oswald 1986-5-28 2047 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC7746  Lomatium piperi Beverly J. Wise 1969-3-29 115 Lassen Along Hwy 139 2 mi north of Susanville. 1341 Comment
  JEPS103161  Lomatium plummerae G. Schoolcraft 1996-5-13 2519 Lassen Ft. Sage OHV area 3 mi. NE of Doyle 1402 Comment
  LA84781  Lomatium ravenii Tracy Call; Viola Call 1961-5-30 2048 Lassen about 2 mi. S of Ravendale 1462 Comment
  RSA0049623  Lomatium ravenii Dean Wm. Taylor 2012-5-17 21208 Lassen Madeline Plains, at the western base of Juniper Ridge (ca. 5 miles E of Termo) 1615 Comment
  UC1187686 Image available Lomatium ravenii Tracey and Viola Call 1961-5-30 2048 Lassen ca. 2 mi. s. Ravendale 1463 Comment
  UC1599737 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen s. Ravendale 1615 Comment
  UCR267419  Lomatium ravenii Jim Andre, Glenn L. Clifton 1993-6-14 30002 Lassen northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville 1646 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
  SEINET11131322  Lomatium triternatum var. triternatum M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 86201 Lassen Smoke Creek Rd., E of HWY 395 1433 Comment
  CHSC58491  Lonicera conjugialis Vernon H. Oswald 1992-7-3 5057 Lassen Lassen Volcanic National Park. Grassy Creek between Horseshoe and Snag lakes, ca. 0.3 mi NE of the trail to Cameron Meadow. 1950 Comment
  JEPS13678  Lonicera conjugialis W. L. Jepson 1910-6-11 4119 Lassen Snag Lake 1889 Comment
  SD6574  Lonicera involucrata Mrs. R. M. Austin 1882-8-7 Lassen Hot Spring Valley. Comment
  JEPS88234  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7818 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, at 6.0 mi. post e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC1523783  Lotus oblongifolius var. oblongifolius Gary Schoolcraft 1981-7-14 534 Lassen s of Pittville (along Beaver Creek); Beaver Creek 1158 Comment
  JEPS107457  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2005-6-2 11970 -A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  UC507000  Lotus purshianus var. purshianus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 193 Lassen Grass Valley Lassen Forest 1694 Comment
  HSC23526  Lotus salsuginosus R. Carter 1967-6-27 554 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  NY716011  Lotus tenuis A. J. Cronquist 1959-6-17 8474 Lassen Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville 1311 Comment
  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
  CHSC117281  Ludwigia palustris Lowell Ahart; John Dittes 2016-7-15 21220 Lassen About 50 yards west of the road and 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
  JEPS85684  Lupinus W. L. Jepson 1937-8-11 19375 Lassen Milford 1280 Comment
  RSA622143  Lupinus B. J. Cox, Paul Gallian 1971-6-2 2590 Lassen Approx. 6 mi. S. of Susanville at Jct. of U.S. Hwy 395 and Calif. Hwy 36 to Susanville, near Johnstonville. 1311 Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  CHSC27936  Lupinus angustiflorus M. S. Taylor 1974-6-20 314 Lassen Abundant around Crater Lake, Lassen National Park. Comment
  UC15769  Lupinus angustiflorus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  SEINET10841274  Lupinus arbustus subsp. silvicola 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
  UC1553386  Lupinus argenteus G. Schoolcraft 1988-8-24 1856 Lassen 16 mi e Adin; Ash Valley RNA/ACEC 1554 Comment
  UCR119030  Lupinus argenteus subsp. argenteus Beecher Crampton 1954-7-6 2079 Lassen Modoc Plateau, Madeline. 1524 Comment
  CHSC106069  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2010-7-31 16977 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
  CHSC91670  Lupinus argenteus var. heteranthus L. P. Janeway 2005-7-3 8459 Lassen High Cascade Range. At junction of Road 22 and Road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. 1523 Comment
  JEPS117258  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2010-7-31 16977 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
  UC1137308  Lupinus argenteus var. heteranthus George A. Fischer and Irwin H. Johnson 1933-7-14 F- 265 Lassen Lassen Forest 1767 Comment
  UCD106819  Lupinus argenteus var. heteranthus Grady L. Webster 1989-5-13 7712 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UCD106820  Lupinus argenteus var. heteranthus Leo Whitney 1934-7-17 s.n. Lassen Lassen N. F. Comment
  SEINET5327809  Lupinus argenteus var. heteranthus G. Schoolcraft 1997-5-14 2589 Lassen W slope of Ft. Sage Mtns. 3 mi N of Doyle 1311 Comment
  HSC28310  Lupinus brevicaulis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19280 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  JEPS79210  Lupinus brevicaulis L. R. Heckard with R. C. Bacigalupi 1980-6-11 5246 Lassen along US 395, 11.3 mi n Litchfield (s of Deep Creek crossing); , n of Litchfield 1463 Comment
  POM23858  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA39736  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford. 1265 Comment
  SEINET10490671  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 458 Lassen 6 mi. N of hallelujah jact on us hwy 395, in aremisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  POM212173  Lupinus confertus Carl B. Wolf 1931-9-6 2404 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  RSA3037  Lupinus confertus Carl B. Wolf 1931-9-6 2404 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  RSA0029190  Lupinus confertus John F. Emmel 1997-6-8 1490 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  SEINET10450525  Lupinus confertus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in a field near Susanville. 1298 Comment
  UCR18740  Lupinus corymbosus Frank C. Vasek 1975-7-11 75011- 21 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC66388  Lupinus lepidus var. confertus Vernon H. Oswald; Lowell Ahart 1996-6-17 7807 Lassen Modoc Palteau. Bizz Johnson Trail accessed at Devils Corral Trailhead loacted off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of Susan River E of Devils Corral Trailhead and W of the 6.0 mile post. 1402 Comment
  NY716913  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Highway 395 ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC1129510  Lupinus lepidus var. confertus H. S. Yates 1936-8-11 6071 Lassen Baxter Creek; Susanville Quadrangle, Baxter Creek Comment
  UC764829  Lupinus lepidus var. confertus R. F. Hoover 1940-10-1 4653 Lassen Janesville Comment
  UCD108246  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395, ca 7.8 miles southeast of Susanville. 1293 Comment
  SEINET8051629  Lupinus lepidus var. confertus M. J. Williams 1983-7-31 83- 126 -1 Lassen Roadside near Janesville 1280 Comment
  NY747435  Lupinus microcarpus A. A. Heller 1938-6-23 15219 Lassen Along the highway (U.S. #395) between Termo and Madeline 1524 Comment
  CDA27535  Lupinus microcarpus var. microcarpus T. C. Fuller 1963-6-1 10623 Lassen West side of road to Susanville, 2.2 miles south of Pittville. 0 Comment
  CAS-BOT-BC323945  Lupinus nevadensis M. S. Taylor 1982-5-29 4567 Lassen Along dirt road paralleling Hwy 395, on its E side, ca 0.5 mi N of Hwy 395 jct with Scott Rd, ca. 20 mi N of Reno. Comment
  CHSC5288  Lupinus obtusilobus 1944-7-26 Lassen Juniper Lake. 2055 Comment
  RSA0005616  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC108001  Lupinus polycarpus Lowell Ahart; John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UCR79417  Lupinus polyphyllus subsp. superbus J. T. Howell, G. H. True, Margaret Williams 1973-6-28 49412 Lassen Sierra Nevada Mtns/ Modoc Plateau, Elysian Valley, west of Janesville 1326 Comment
  UC1713549  Lupinus polyphyllus var. burkei M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  SEINET10488918  Lupinus sellulus Katherine L. Morris 1973-5-25 Morris 215 Lassen Collected 2.6 mi w of susanville, on u.s. 36, In an area of pinus jeffreyi and Purshia. Intermediate to l. Confertus (?). 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
  RSA0011458  Madia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46977 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC4904  Madia elegans Bill Wilson 1967-7-15 163 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  UCR67469  Madia elegans George K. Helmkamp 1990-10-4 M 11 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CAS-BOT-BC343692  Madia elegans Gary Schoolcraft 1985-8-5 1501 Lassen South of Doyle 1402 Comment
  SD50990  Madia elegans Darley F. Howe 1960-9-21 Lassen 2 miles north of Janesville on #395 Comment
  SEINET11601334 Image available Madia elegans M. J. Williams, G. L. Smith 1983-1 83- 155 -2 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  UC76023  Madia exigua Milo S. Baker Jul 1905 Lassen Dixie Valley Comment
  UC1594645  Madia glomerata Vernon H. Oswald and Lowell Ahart 1992-7-16 5130 Lassen on si side Bridge Creek Spring Road (County Rd 112, Forest Rd. 31N06) (ca 0.4 mi e of Champs Flat Rd (County Rd 105, Forest Rd 32N02), between Old Station and Susanville); Feather Lake 1749 Comment
  UC905684  Madia glomerata David D. Keck 1930-7-23 955 Lassen 15 mi w Susanville; Sierra Nevada 1525 Comment
  JEPS117590  Madia gracilis Lowell Ahart, John Dittes 2010-7-31 17006 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin Comment
  JEPS17908  Madia gracilis Rimo Bacigalupi with G. T. Robbins 1955-7-21 5432 Lassen upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Creek 1767 Comment
  SEINET11807269  Madia gracilis N. H. Holmgren, Holmgren, P. K. 1980-1 9497 Lassen Observation Peak, S base in upper Smoke Creek drainage, 19 km airline distance ESE of Ravendale 1680 Comment
  SEINET481268  Madia gracilis N. H. Holmgren, P. K. Holmgren 9497 1980-7-4 Lassen Observation Peak, sousth obase in upper Smoke Creek drainage, 19 km (12 miles) airline distance east-southeast of Ravendale Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC6274  Maianthemum stellatum M. West 1946-6-17 Lassen On Mt. Fredonyer. 2133 Comment
  CAS-BOT-BC512879  Maianthemum stellatum Louella Bass 1973-5-25 37 Lassen Elysian Valley 1325 Comment
  CHSC12436  Malacothrix Robert W. Severin 1969-6-25 19 Lassen Murrer's Upper Meadow, 2 mi es e of E.L.B.S. Near west side of meadow. 1584 Comment
  CAS-BOT-BC347441  Malacothrix floccifera Louella Bass 1973-6-23 131 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC348029  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi. n. Wendel Rd. along Skedaddle Ranch Rd. Comment
  UC1567438  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi N Wendel Road, along Skedaddle Ranch Rdoad. 1493 Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CDA5693  Marrubium vulgare T. C. Fuller 1964-10-8 12704 Lassen West side of Highway 395 to Standish, 1 mile south of Secret Valley. 0 Comment
  UC62421  Marsilea oligospora Baker and Nutting 1894-7-12 Lassen Pine Creek Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  CHSC117546  Marsilea vestita subsp. vestita Lowell Ahart 2016-7-13 21130 B Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS88240  Medicago lupulina Vernon H. Oswald and Lowell Ahart 1996-6-17 7812 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, on edge of trail at the 6.0 mi. post e. of Devils Corral Trailhead); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC584328  Melica bulbosa G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2283 Lassen e slope and summit Diamond Mt. 2194 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
  UCD88494  Melica stricta L. Whitney 1933-8-1 s.n. Lassen Near Slate Creek. 1920 Comment
  CAS-BOT-BC262447  Melica subulata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49438 Lassen Elysian Valley, west of Janesville 1325 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
  SJSU11391  Mentha arvensis J. W. Tilden 1960-6-27 1521 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CHSC5298  Mentzelia albicaulis 1944-6-23 Lassen Eagle Lake. 1584 Comment
  JEPS107449  Mentzelia albicaulis Lowell Ahart, John Dittes 2005-6-1 11888 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
  SEINET8707736  Mentzelia congesta B. L. Wilson, D. Lytjen, N. Otting. 2005-7-27 11547 Lassen Pine Dunes, an exclosure, S of Buckhorn Road and ca 1 mile NW of Buckhorn Reservoir. 1716 Comment
  CHSC29933  Mentzelia dispersa Robin L. Ondricek 1978-6-22 67 Lassen In rocky soil among Jeffrey Pines at the n end of Mahogany Lake. 2057 Comment
  UC1137741  Mentzelia dispersa George A. Fischer, Irwin H. Johnson F 229 Lassen Lassen National Forest, Patterson Flat 1737 Comment
  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
  POM83245  Mentzelia montana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SBBG2836  Micranthes integrifolia H. and M. Dearing 1938-6-30 2232 Lassen Box 20 mi N of Susanville [Hwy 44] 1066 Comment
  CAS-BOT-BC429081  Micranthes odontoloma Alice Eastwood 1912-8-22 1861 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC66261  Micranthes oregana Vernon H. Oswald; Lowell Ahart 1996-6-24 7889 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  NY539941  Micromonolepis pusilla A. Tiehm 1986-5-12 10351 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek 1341.1 Comment
  OBI76931  Microseris laciniata Anthony Baniaga 2011-7-9 434 Lassen Lassen Natl forest. SW Pine Crk Valley. Pine Crk valley quad T31N R8E sec 10 NE of NE 1715 Comment
  JEPS114755  Microseris laciniata subsp. laciniata Lowell Ahart, John Dittes 2008-6-22 15026 Lassen Open meadow area, about 50 yards southwest of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  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
  CHSC106089  Microseris nutans Lowell Ahart; John Dittes 2010-7-31 17000 Lassen Dry meadow, on the north side of the road, about 30 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
  CHSC117189  Microseris nutans Lowell Ahart; John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  RSA702595  Microseris nutans L. P. Janeway 2004-6-26 8152 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  CAS-BOT-BC349296  Microseris nutans Parkison 1916-6-21 41 -a Lassen Lassen National Forest. Meadow Border, Patterson Camp 1706 Comment
  CAS-BOT-BC349298  Microseris nutans Clarence R. Quick 1961-6-21 61 -19 Lassen Adjacent to Road 21, Blacks Mt. Experimental Forest, northeast of Lassen Peak 1798 Comment
  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
  OBI48095  Microsteris gracilis Rhonda Riggins 1989-4-27 1637 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  RSA74070  Microsteris gracilis subsp. humilis Milo S. Baker 1952-5-23 12414 Lassen Highway 36, east of Chester Comment
  UC1609131  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-28 5609 Lassen ne Poison Lake (n of Hwy. 44 on Rd. 33N06, nne of Burgess Meadow, sse flank of mtn.); Harvey Mtn. 1798 Comment
  UC1778584  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen Moist clayey soil. East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track and wet ditch. 1749 Comment
  RSA505418  Mimulus breviflorus R. C. Bacigalupi, S. Galen Smith 1957-6-28 5989 Lassen Along rivulet just east of U.S. Highway 395, 7.0 miles north of Madeline, about one mile north of Sage Hen siding on Southern Pacific Railroad; 1677 Comment
  UC1063535  Mimulus breweri A. Simontacchi 1940-5-28 786 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS88205  Mimulus breweri Vernon H. Oswald and Lowell Ahart 1996-6-24 7866 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, on the W side of the meadow ca. 0.2 mi S of the cabin. 1633 Comment
  CHSC5905  Mimulus floribundus M. West 1946-7-1 Lassen Pine Creek, Eagle Lake. 1584 Comment
  JEPS107802  Mimulus floribundus Lowell Ahart, John Dittes 2005-6-2 11970 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
  POM252822  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi. south of Westwood. 1524 Comment
  SEINET10570320  Mimulus guttatus Jeffrey Huber 1971-6-11 Huber 320 Lassen 3 mi e of westwood, on calif hwy 36, in volcanic soils, in pinus jeffreyi. 1608 Comment
  JEPS97419  Mimulus latidens Vernon H. Oswald and L. Ahart 1995-6-19 6887 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395 1350 Comment
  JEPS28704  Mimulus microphyllus George W. Gillett 1957-7-28 930 Lassen 1 mi above Butte Lake (on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  JEPS10776  Mimulus moniliformis Brown and Wieslander 1922-7-30 17 Lassen near Martin Springs Comment
  CDA38387  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen By south side of Highway 44, vicinity of Bogard Campground. Comment
  SEINET10929288  Mimulus nanus Paul Gallian, David B. Dunn 1971-6-2 Gallian 467 Lassen 6 mi n of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  RSA422232  Mimulus nanus var. nanus Christopher Davidson 1975-6-7 2764 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS4302  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mi s Westwood 1524 Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  RSA536390  Mimulus pygmaeus Beth Corbin 1991-5-23 618 Lassen Adobe South Vernal Pool, 3 miles N of Timbered Crater, 14 miles N of Fall River Mills. 1098 Comment
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Jul 2 2013
  UC1561993  Mimulus torreyi Barbara Ertter 1987-7-25 7317 Lassen Hwy 44 ca 1 mi e Shasta Co. line 1645 Comment
  HSC22951  Monardella odoratissima John Pratt 1970-6-21 30 Lassen 1738 Comment
  CHSC5272  Monardella odoratissima subsp. glauca J. B. Kimsey 1946-6-11 Lassen Pine Creek, near Eagle Lake. 1580 Comment
  JEPS95713  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  UC1124581  Monardella odoratissima subsp. glauca H. P. Hagge 1929-9-11 19 Lassen Logan Mtn. Eagle Lake Quadrangle Comment
  CHSC23511  Monardella odoratissima subsp. pallida Wayne O. Baum 1971-7-12 71 -69 Lassen E. slope of Gallatin Peak. 2011 Comment
  JEPS63401  Monardella odoratissima subsp. pallida Jos. Grinnell 1928-6-28 Lassen Near Butte Lake 1889 Comment
  UC124968  Monardella odoratissima subsp. pallida T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CHSC99530  Monolepis nuttalliana Lowell Ahart; John Dittes 2008-6-22 15034 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  SDSU5609  Monolepis nuttalliana D. F. Howe 1964-7-31 3903 Lassen Modoc National Forest 10.2 miles from entrance on road from Likely. 1768 Comment
  UC526137  Monolepis pusilla John Thomas Howell 1934-6-10 11895 Lassen Horse Lake Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC57311  Montia chamissoi Mary Meyer 1980-7-9 Lassen In Horse Camp Spring. 1706 Comment
  UC1776709  Montia chamissoi G. Schoolcraft 1994-7-7 2452 Lassen About 1 mile W of Boot Lake 2194 Comment
  NY497727  Montia chamissoi G. Schoolcraft 1982-6-16 703 Lassen Along Smoke Creek north of Shinn Ranch 1554.5 Comment
  CHSC66257  Montia linearis Vernon H. Oswald; Lowell Ahart 1996-6-24 7875 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Growing in moist soil on the edge of Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  UC773867  Montia linearis L. R. Short, Wm. Gansberg 1936-6-8 S 392 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1743 Comment
  CAS-BOT-BC445067  Montia linearis Clarence R. Quick 1962-6-17 62 -20 Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  SEINET5334396  Montia linearis J. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, Ca. 1372 Comment
  HSC10386  Muhlenbergia asperifolia M. T. Milligan 1964-8-6 201 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  POM115416  Muhlenbergia asperifolia Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  POM172678  Muhlenbergia asperifolia Franklin P. Nutting s.n. Lassen Eagle Lake. Comment
  RSA256304  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6237 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  RSA256322  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1973-6-5 6236 Lassen 35 miles NW of Susanvill, near Pittville sing on Hwy 44 1738 Comment
  CHSC71134  Muilla transmontana Vernon H. Oswald; Lowell Ahart 1998-5-22 9133 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  CHSC91312  Myosotis discolor Lowell Ahart; John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CAS-BOT-BC392253  Myosurus apetalus G. Schoolcraft 1993-6-10 2290 Lassen N. of Clark's Valley Rd. e. of Red Rock Lake 1828 Comment
  CHSC68760  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1997-5-27 8518 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
  JEPS94606  Myosurus minimus Vernon H. Oswald and Lowell Ahart 1997-5-27 8518 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  JEPS103172  Myriophyllum sibiricum G. Schoolcraft 1996-9-11 2565 Lassen Willow Creek below petroglyphs and above dam 1310 Comment
  RSA233733  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39134 Lassen Said Valley Reservoir. Comment
  RSA634201  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139. Comment
  UCD102560  Myriophyllum sibiricum G. Schoolcraft 1996-9-11 2565 Lassen Willow Creek. 1310 Comment
  UCR183191  Nama aretioides var. multiflora Jim Andre, G. L. Clifton 1993-5-28 7712 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 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
  SEINET7878178 Image available Nama lobbii Annetta Carter 1946-1 s.n. Lassen Altitude ca. 5500 feet; crest of ridge ten miles northeast of Susanville, Lassen County. 1676 Comment
  CHSC23862  Navarretia breweri K. R. Stern 1974-6-26 5856 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  SBBG58267  Navarretia breweri E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 Comment
  UC1116681  Navarretia breweri Beecher Crampton 1961-6-20 5737 Lassen 6.5 mi n Bogard Ranger Station; Lassen National Forest, Little Harvey Valley 1676 Comment
  UC1184057  Navarretia breweri Jean Langenheim 1957-6-22 4365 Lassen Said Valley Reservoir, ne part of Lassen County Said Valley Reservoir Comment
  CDA40081  Navarretia breweri T. C. Fuller 1963-6-11 10658 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC4887  Navarretia capillaris Bill Wilson 1967-7-5 41 Lassen Collected at Eagle Lake Biological Station. 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  JEPS28649  Navarretia capillaris George W. Gillett 1957-7-21 861 Lassen 300 yards n summit Juniper Lake-Cameron Meadow trail (Lassen Volcanic National Park); , Juniper Lake-Cameron Mdw trai 2118 Comment
  CHSC14175  Navarretia divaricata K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5806 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  SEINET200215  Navarretia divaricata C. McMillan 1949-6-15 1541 Lassen Five miles west of Bieber 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
  CHSC23861  Navarretia intertexta subsp. propinqua A. W. Harvilik 1967-7-7 38 Lassen Collected on hwy. 139 ca. 6 mi from Susanville. 1463 Comment
  CHSC58847  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5101 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. On bed of lake. White-flowered plants collected at McCoy Flat Reservoir. 1745 Comment
  CHSC89737  Navarretia leucocephala subsp. minima L. P. Janeway 2004-6-26 8145 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  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
  UC909067  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 c Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
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Oct 17 2009
  CAS-BOT-BC230383  Navarretia leucocephala subsp. minima Beecher Crampton 1960-6-20 5731 Lassen 0.5 mile S of Black's Mountain Experiment Station, USDA Forest Service, Lassen National Forest 1706 Comment
  UC1137773  Navarretia linearifolia subsp. linearifolia August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest, Black's Mtn 1706 Comment
  UC1184061  Navarretia linearifolia subsp. linearifolia Jean Langenheim 1957-6-22 4368 Lassen Said Valley Said Valley (northeastern part Lassen County) Comment
  SEINET10464780  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 Dempster 1673 Lassen Gold Run Creek about 4 miles southwest of junction with Richmond Road, south ofSusanville Comment
  UC67087  Nemophila parviflora var. austiniae T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  POM73805A  Nemophila parviflora var. austiniae Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  UC1137710  Nemophila pedunculata L. R. Short and Wm. Gansberg 1936-6-8 S- 393 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1743 Comment
  POM73805B  Nemophila pedunculata Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  HSC30192  Nemophila spatulata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19156 Lassen 3 mi. N of Westwood Comment
  UC26151  Nicotiana attenuata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CDA41136  Nicotiana attenuata T. C. Fuller 1959-7-7 4734 Lassen Highway 395, 2.4 miles south of road to Karlo. 0 Comment
  CHSC60720  Nothocalais troximoides Vernon H. Oswald; Lowell Ahart 1993-6-14 5504 Lassen Champs Flat Rd. (Lassen A21/105, Forest 32N02), 1.8 mi N of Hwy 44, between Poison Lake and Susanville. 1749 Comment
  UC682109  Nothocalais troximoides G. L. Stebbins Jr. with A. A. Beetle 1942-5-30 3238 Lassen on road to Adin 5.2 mi e Bieber 1280 Comment
  CAS-BOT-BC349916  Nothocalais troximoides G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2309 Lassen Crest of range head of Stony Ridge, west of Milford 1930 Comment
  UCD33605  Oenothera deltoides Beecher Crampton 1970-6-26 8638 Lassen Lassen County, 10 miles north of Milford. Comment
  JEPS124837 Image available Oenothera deltoides J. Yamanaka 1965-7-12 122 Lassen U. S. Highway 395, 2.6 miles N. of Milford Sandy soil. Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 Comment
  UC1186545  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 mi n Bridge Camp; Hat Creek Comment
  UC874023  Oenothera flava subsp. flava C. L. Hitchcock 1940-5-26 6642 Lassen overflow of river 1 mi w Bieber; Pitt River Comment
  CDA18274  Onobrychis viciifolia G. D. Barbe 1974-8-2 1940 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC350043  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1845 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  CAS-BOT-BC350045  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1899 Lassen Battle Creek Meadow, Lassen Butte Region Comment
  UC2027324  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen National Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mountain quadrangle Comment
  HSC93438  Oreostemma elatum Vernon H. Oswald 1996-8-1 8120 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  CHSC65153  Orobanche corymbosa Vernon H. Oswald; Lowell Ahart 1995-7-5 6956 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  SEINET5766936  Orobanche corymbosa F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  CAS-BOT-BC499906  Orobanche fasciculata Clare B. Hardham no date on label; det'd 1980. s.n. Lassen Sierra Nevada: Gold Rush Creek, S of Susanville Comment
  RSA14096  Orthocarpus campestris Elmer I. Applegate 1929-6-24 5884 Lassen North edge of the town of Beiber, Pit River. Comment
  SEINET10549655  Orthocarpus copelandii Mary Susan Taylor 1974-1 Taylor 307 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SD7034  Orthocarpus copelandii var. cryptanthus Mrs. R. M. Austin 1882-8-9 Lassen Hills - near Hot Spring, Val. Comment
  POM44324  Orthocarpus cuspidatus subsp. copelandii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UCD18956  Orthocarpus cuspidatus subsp. copelandii Raymond D. Ratliff 1965-7-17 21 Lassen Lassen National Forest, Lyon's hgd., Harvey Valley Allot. 1706 Comment
  CHSC23505  Orthocarpus cuspidatus subsp. cryptanthus Wayne O. Baum 1970-7-7 70 -2 Lassen Top of Gallatin Peak. 2117 Comment
  CHSC37345  Orthocarpus cuspidatus subsp. cryptanthus J. D. Prouty 1978-6-28 5 Lassen Lower Dry L., SE of Eagle L. 1645 Comment
  JEPS17630  Orthocarpus cuspidatus subsp. cryptanthus Rimo Bacigalupi with G. T. Robbins 1955-7-20 5412 Lassen 4.4 mi s Patterson Ranger Station (near eastern edge of Long Valley Meadow, southern tip of the Warner Mountains); southern tip of Warner Mountains, eastern edge Long Valley M 2057 Comment
  UC1137684  Orthocarpus cuspidatus subsp. cryptanthus L. R. Short and J. Warren 1936-6-23 S- 453 Lassen Burgess Spr. Exp. Range; Lassen Forest, Burgess Spr. Exp. Range 1804 Comment
  SEINET13756747  Orthocarpus cuspidatus subsp. cryptanthus N. H. Holmgren, Patricia K. Holmgren 1978-6-12 8933 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance east-southeast of Ravendale. 1768 Comment
  RSA165526  Orthocarpus hispidus Clare B. Hardham 1961-6-17 7501 Lassen Baxter Creek S of Susanville. Comment
  OBI75887  Osmorhiza berteroi Anthony Baniaga 2011-8-16 501 Lassen Lassen Natl Forest. Just N of intersection 32N10H with F.S. 10. Red Cinder quad T30N R8E sec 18 NW of NW 1905 Comment
  JEPS114621  Packera cana Lowell Ahart, John Dittes 2008-6-19 14877 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
  UC35980  Packera eurycephala var. eurycephala Mrs. C. C. Bruce June 1898 2176 Lassen Shumway Comment
  OBI49191  Packera eurycephala var. eurycephala Lewis S. Rose 1940-6-11 40505 Lassen 8 mi W of Nubieber 1219 Comment
  UC35937 Image available Packera indecora M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
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Sep 26 2006
  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
  UC187441  Packera streptanthifolia T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC10386  Paeonia brownii J. T. Howell 1955-7-19 30820 Lassen East side of Beckwourth Pass 1493 Comment
  CAS-BOT-BC10429  Paeonia brownii J. T. Howell 1934-6-14 12146 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CHSC112794  Panicum Lowell Ahart; John Dittes 2013-7-23 18909 Lassen On the east side of the gravel road, north-south road west of Big Canal, 0.76 mile north of State Highway 299, 4.9 miles (air) northeast of Bieber, Big Valley. 1257 Comment
  UC149529  Panicum capillare J. Burtt Davy Jun 17 1897-Jun 24 1897 3346 Lassen Honey Lake Valley Comment
  SEINET229883 Image available Pappostipa speciosa G. Schoolcraft 1982-6-22 721 Lassen N end of Fort Sage Mts. 1524 Comment
  CAS-BOT-BC259609  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE of Shaffer Mountain 1356 Comment
  UC1101564  Paspalum distichum Malcolm A. Nobs and S. Galen Smith 1949-8-20 1479 Lassen 1 mi n Doyle (banks of Long Creek); Honey Lake Valley, banks of Long Creek Comment
  CDA5491  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  SEINET10456341  Pectocarya penicillata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 874 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  UC718015  Pedicularis attollens David Keck 1944-7-8 5443 Lassen 2 mi e of Westwood (in meadow leaning down to Mountain Meadows Reservoir); Sierra Nefada 1524 Comment
  CAS-BOT-BC7094  Pedicularis attollens subsp. protogyna Francis Whittier Pennell 1940-6-10 25771 Lassen Route 36 road to Coppervale R.S., E of Westwood Comment
  UCR267420  Pedicularis centranthera Jim Andre, Glenn L. Clifton 1993-6-14 30003 Lassen northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville 1646 Comment
  JEPS3332  Pedicularis groenlandica George Gillett 1952-7-29 119 Lassen w slopes of Paradise Meadow; Lassen Volcanic National Park 2148 Comment
  CHSC4924  Pedicularis semibarbata L. G. Bennett 1967-7-14 142 Lassen Immediate vicinity of Silver Lake. 1975 Comment
  PASA868  Penstemon confertus var. procerus Margaret Stason 1932-6-23 438 Lassen Kelleys Camp, Warners Creek Comment
  SEINET10547960  Penstemon confusus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2607 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along ridge and in sandy wash. 1402 Comment
  JEPS107844  Penstemon deustus var. pedicellatus Lowell Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  CHSC62007  Penstemon gracilentus Eenam Sin 1992-6-3 26 Lassen North east corner at the base of Gallatin Peak. 1524 Comment
  NY600719  Penstemon gracilentus A. M. Alexander 1946-8-13 5157 Lassen West side of Eagle Lake Comment
  UC506922  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen Forest 1783 Comment
  SEINET5328215 Image available Penstemon gracilentus G. Schoolcraft 1994-7-7 2370 Lassen about 1 mi W of Boot Lake 235 Comment
  CHSC68881  Penstemon heterodoxus var. heterodoxus Vernon Oswald 1997-6-24 8643 Lassen South of Susanville near the samll pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  SEINET5329197 Image available Penstemon heterophyllus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC68882  Penstemon janishiae Vernon Oswald; Lowell Ahart 1997-6-24 8644 Lassen South of Susanville near the small pool on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  POM252804  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen West of Westwood. Comment
  NY627254  Penstemon neotericus K. A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mountain; along CA 36, ca. 1 mile east of jct. CA A21 on east side of Westwood. 1524.0 Comment
  NY627268  Penstemon neotericus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  POM147859  Penstemon neotericus J. B. Feudge 1927-7-20 1768 Lassen Westwood. Comment
  RSA257090  Penstemon newberryi Christopher Davidson 1974-7-23 2497 Lassen Lassen Volcanic Nat'l Park. Rd to Juniper Lake. 2134 Comment
  POM172676  Penstemon newberryi subsp. newberryi Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  SEINET3836566 Image available Penstemon newberryi subsp. newberryi Marcus E. Jones 1897-7-7 Lassen Lassen's Peak 1829 Comment
  CAS-BOT-BC239220  Penstemon newberryi var. berryi Hans Leschke 1957-7-12 s.n. Lassen Lassen Volcanic National Park, above Cold Boiling Lake 2377 Comment
  CAS-BOT-BC239222  Penstemon newberryi var. berryi C. R. Quick 1964-7-11 64 -77 Lassen Humboldt Summit ne. of Janesville & Butte Mdws. 2011 Comment
  HSC30182  Penstemon roezlii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19289 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS29104  Penstemon roezlii Lauramay T. Dempster 1961-6-17 1680 Lassen just w Tule Mountain; just w of Tule Mountain 1645 Comment
  JEPS103216  Penstemon roezlii G. Schoolcraft 1989-7-3 1947 Lassen Diamond Mtns. on Diamond Peak 2346 Comment
  SEINET226061  Penstemon roezlii M. Lavin 1982-5-30 4122 Lassen E of Hallelujah Junction 22 air mi NW of Reno W side of Petersen Mtns 1676 Comment
  CAS-BOT-BC239494  Penstemon rydbergii var. oreocharis Lassen 1927 G. S. Crew 1927-7-1 49 Lassen Lassen National Forest, Bogard R.S. pasture 1712 Comment
  CAS-BOT-BC239497  Penstemon rydbergii var. oreocharis Louella Bass 1973-5-29 EV 50 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC239499  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36, road to Coppervale R.S., E. of Westwood 1493 Comment
  CAS-BOT-BC239501  Penstemon rydbergii var. oreocharis Robert W. Gardner 1937-6-20 G - 19 Lassen Lassen National Forest, Burgess Spring 1699 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
  CHSC12412  Penstemon rydbergii var. oreocharis Lynn R. Thomas 1969-6-20 136 Lassen Dean's Meadow, ca. 6 mi. s of E.L.B.S. 1950 Comment
  UC1063480  Penstemon rydbergii var. oreocharis A. Simontacchi 1940-6-3 792 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CHSC12411  Penstemon speciosus Lynn R. Thomas 1969-6-20 135 Lassen Just above Deans Meadow, ca. 6 mi. s of E. L. B. S. 2011 Comment
  CHSC12458  Penstemon speciosus Robert W. Severin 1969-6-20 2 Lassen 4 miles s of E. L. B. S. in Dean's Meadow. 1950 Comment
  CHSC30557  Penstemon speciosus Sori H. Shad 1970-6-25 14 Lassen Found in Dean's Meadow, 6 miles south of E. L. B. S. Comment
  JEPS101465  Penstemon speciosus Dean W. Taylor 1974-6-14 3721 Lassen Janesville Grade road about 4 miles SSW Janesville, Plumas National Forest 1706 Comment
  NY661040  Penstemon speciosus G. W. Gillett 1953-7-1 273 Lassen Fredonyer Pass, Highway 36. Lassen National Forest. 1752.6 Comment
  UC1036208  Penstemon speciosus George W. Gillett July 1953 273 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass (Highway 36) 1752 Comment
  UC1520676  Penstemon speciosus Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9518 Lassen 19 km (12 mi) airline distance ese Ravendale (14.8 km (9.2 mi) e U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1680 Comment
  UC423671  Penstemon speciosus David D. Keck 1930-7-23 950 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  UCR183192  Penstemon speciosus Jim Andre, G. L. Clifton 1993-5-28 7713 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  NY661063  Penstemon speciosus D. D. Keck 1935-6-25 3768 Lassen Ca. 2 miles west of Westwood on road to Chester at Co. line. Comment
  RSA38458  Penstemon speciosus Philip A. Munz 1947-5-19 11877 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  CAS-BOT-BC239664  Penstemon sudans John Thomas Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 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
  NY661805  Penstemon sudans J. T. Howell 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range Comment
  UC423647  Penstemon sudans David D. Keck 1930-7-23 953 Lassen 4 mi w Susanville; Sierra Nevada 1463 Comment
  SEINET5323637 Image available Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen In rimrock NE of Shaffer Mtn 1356 Comment
  HSC100163  Peraphyllum ramosissimum J. P. Smith, & J. O. Sawyer 2011-8-14 13378 Lassen Along service road to transmitter facility, 3.2 mi. W of Hwy. 395. Comment
  NY850110  Peraphyllum ramosissimum G. Schoolcraft 1984-6-11 1207 Lassen Hills east of Bull Flat 1585 Comment
  RSA59742  Peraphyllum ramosissimum E. K. Balls 1950-5-19 14789 Lassen 1.6 miles S of Modoc county line, Hwy. 395, between Madeline and Likely. 1463 Comment
  UC191152  Peraphyllum ramosissimum C. F. Sonne Jun 1879 Lassen near Susanville (West Valley, Buffalo Ravine); Buffalo Ravine Comment
  CHSC42647  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1986-5-28 2049 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 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
  SEINET11153899  Perideridia gairdneri subsp. borealis M. S. Baker July 31 (no year) s.n. Lassen Silver Lake. Comment
  CHSC105249  Perideridia lemmonii Lowell Ahart; John Dittes 2010-7-31 16991 Lassen On the south side 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
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  HSC23085  Peritoma platycarpa John Pratt 1970-7-5 63 Lassen 1250 Comment
  CHSC6232  Persicaria 1945-7-1 Lassen Eagle Lake. 1554 Comment
  CHSC59095  Persicaria lapathifolia Vernon H. Oswald; Lowell Ahart 1992-8-25 5189 Lassen Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  CHSC77223  Persicaria lapathifolia G. Schoolcraft 1996-9-11 2560 Lassen Lower end of Willow Creek below petroglyphs and above dam. 1341 Comment
  CAS-BOT-BC419143  Persicaria maculosa G. Schoolcraft 1995-8-16 2515 Lassen North of Cherry Mountain 1584 Comment
  RSA17669  Phacelia adenophora Elmer I. Applegate 1934-5-4 8912 Lassen South end of Secret Valley Comment
  RSA722579  Phacelia adenophora R. R. Halse 1975-6-20 1198 Lassen Madeline Plains, along Lassen County Road 508, 1.5 miles east of Termo. 1590 Comment
  UC1483800  Phacelia adenophora G. Schoolcraft 1980-5-30 248 Lassen along Hwy 395 n Mud Flat; Secret Valley Area 1359 Comment
  UC1567436  Phacelia adenophora G. Schoolcraft 1989-5-16 1876 Lassen w Hwy 295; Secret Valley 1347 Comment
  UC1603542  Phacelia adenophora Arnold Tiem, Margaret Williams, and Jan Nachlinger 1988-6-2 11701 Lassen on hwy 395 3.4 road mi n Wendel road (from Susanville to Alturas, s side of mt., w of hwy); Shaffer Mt. 1386 Comment
  UCD120256  Phacelia adenophora Philip A. Munz 1947-5-19 11881 Lassen Near road, Madeline. 1676 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
  RSA0009544  Phacelia bicolor Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  JEPS29745  Phacelia bicolor var. bicolor Rimo Bacigalupi and L. R. Heckard 1962-5-28 8500 Lassen junction of cut-off road to Standish and Litchfield (Lassen Co. A3) with U.S. highway 395 1219 Comment
  UC1069270  Phacelia bicolor var. bicolor E. Sawyer 1935-6-27 233 Lassen Long Valley Sierraville Quadrangle Comment
  UCR244050  Phacelia bicolor var. bicolor Jim Andre 1993-6-1 19720 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  HSC30187  Phacelia hastata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19262 Lassen Harvey Valley near Cone Springs Comment
  JEPS107796  Phacelia hastata subsp. compacta Lowell Ahart, John Dittes 2005-6-2 11950 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction 1498 Comment
  GMDRC6948  Phacelia hastata subsp. hastata J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31421 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
  SBBG64963  Phacelia heterophylla E. Rockwell -Jun-1925 404 Lassen Eagle Lake 1554 Comment
  CHSC5262  Phacelia humilis 1944-7-9 Lassen Dow Butte, Eagle Lake. 2042 Comment
  NY1057842  Phacelia humilis P. A. Munz 1947-5-20 11885 Lassen Laufman Forestry Public Camp above Milford 1524 Comment
  SBBG15797  Phacelia humilis H. and M. Dearing 1938-6-30 2234 Lassen 20 mi N of Susanville [Hwy 44] Comment
  UC133065  Phacelia humilis T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UCD120530  Phacelia humilis var. humilis Beecher Crampton 1960-6-18 5728 Lassen N.E. part of county; southern Warner Mtns., vicinity Blue Lake Ranch. Comment
  RSA128301  Phacelia humilis var. humilis Peter H. Raven, Otto T. Solbrig 1958-6-16 13246 Lassen Four and a half miles east of Westwood on State Highway 36. Comment
  CHSC12454  Phacelia linearis Robert W. Severin 1969-6-27 38 Lassen E.L.B.S., 250 ft. n of Vesta Holt Hall. Comment
  HSC82245  Phacelia linearis Thomas W. Nelson, Jane P. Nelson 1980-7-6 5987 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  SFV3020  Phacelia linearis I. L. Wiggins, D. B. Wiggins 1961-6-16 16530 Lassen Big Valley Mountains. South-facing road-cut slope, 0.8 miles west of summit of Big Velley Pass. 1380 Comment
  UCD20363  Phacelia linearis Joe DiTomaso 2002-6-4 s.n. Lassen Lassen County, about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. Comment
  UC506976  Phacelia mutabilis George A. Fischer, Irwin H. Johnson 1933-7-12 F 226 Lassen Lassen <National> Forest 1722 Comment
  CAS-BOT-BC159229  Phacelia ramosissima var. subglabra John Thomas Howell 1934-6-30 11873 Lassen Janesville Comment
  NY1057984  Phacelia thermalis P. A. Munz 1947-5-19 11878 Lassen Highway 395 4 miles south of Madeline Comment
  POM73715  Phacelia thermalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC60737  Phleum alpinum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC1776695  Phleum pratense G. Schoolcraft 1994-8-2 2407 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  UC1137642  Phlox douglasii subsp. rigida A. Simontacchi 1940-5-13 701 Lassen 4.1 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1981 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
  CHSC91334  Phlox stansburyi Lowell Ahart; John Dittes 2005-6-1 11846 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC106966  Phlox stansburyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CHSC68743  Phoenicaulis cheiranthoides Vernon H. Oswald; Lowell Ahart 1997-5-27 8490 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. At a pullout along the highway. 1627 Comment
  RSA0027357  Phoradendron juniperinum John F. Emmel 1994-7-17 1332 Lassen Along road near north base of Observation Peak. 1768 Comment
  UC769862  Phragmites australis R. F. Hoover 1940-10-11 4682 Lassen s Doyle; Long Valley Comment
  CAS-BOT-BC58236  Phyllodoce breweri Ella Dales Cantelow 1941-9-13 3599 Lassen Mt. Lassen Nat. Park. Comment
  CHSC12502  Pinus lambertiana Carol Weld 1969-6-20 13 Lassen Road between Five Corners and Dean's Meadow. 1889 Comment
  NY951542  Pinus ponderosa var. ponderosa D. H. Goldman 2004-11-6 2941 Lassen Along the N side of Forest Road 32N08, just N of Pine Creel Valley and about 1.8 miles E of the intersection with Rt. 44. Crater Lake Mountain, Lassen National Forest 1725 Comment
  CAS-BOT-BC80047  Pinus washoensis John Thomas Howell 1969-8-7 45886 Lassen Between Butte Lake and Cinder Cone Comment
  CDA601  Pinus washoensis Gordon Leppig, Sylvia Leppig and Juli & Kai Neander 1998-8-18 1065 Lassen Modoc National Forest, Blue Lake Campground Comment
  UCD120786  Plagiobothrys cognatus B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  HSC104018  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 5.5 air mi. NE of Bieber, Ash Creek Wildlife Area, ~100 yds. SE of tall poles 1268 Comment
  SBBG125478  Plagiobothrys cusickii L. Ahart 2012-7-9 18284 Lassen ca. 100 yards SE of tall poles, Ash Crk State Wildlife Area, ca. 5.5 mi NE of Bieber, Big Valley 1267 Comment
  CHSC60334  Plagiobothrys hispidulus Mary Ann Showers 1992-6-12 2530 a Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  JEPS103210  Plagiobothrys hispidulus G. Schoolcraft 1989-7-24 1991 Lassen Said Valley Reservoir 1630 Comment
  CHSC59082  Plagiobothrys hispidus Vernon H. Oswald; Lowell Ahart 1992-8-25 5193 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. 1851 Comment
  UC1537689  Plagiobothrys leptocladus Gordon H. True Jr. 1936-6-25 522 Lassen Honey Lake Valley 1219 Comment
  UC614658  Plagiobothrys leptocladus L. Constance 1938-6-11 2330 Lassen slightly alkaline overflow of the Susan River at Litchfield; Susan River, Litchfield 1219 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
  JEPS114692  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2008-6-20 14921 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
  SJSU9125  Platanthera dilatata var. leucostachys H. L. Buckalew 1961-7-2 Lassen Blue Lake near Blue Lake Road Comment
  CHSC67073  Platanthera leucostachys Willis Ball 1969-6-26 41 Lassen Above Gallatin Beach. 1615 Comment
  UC1037205  Platanthera leucostachys Leo Whitney 1933-8-8 1562 Lassen ca 8 mi nw Eagle Lake (spring at bed of Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  CHSC112449  Plectritis macrocera Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18747 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
  CHSC117208  Plectritis macrocera Lowell Ahart; John Dittes 2016-6-7 21005 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC4942  Plectritis macrocera W. Lessig 1967-5-23 16 Lassen Coll. ca. 200 yds. ne of Eagle Lake Biology Station. 1524 Comment
  JEPS114707  Plectritis macrocera Lowell Ahart, John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  UC1553411  Plectritis macrocera G. Schoolcraft 1987-5-19 1702 Lassen 16 mi e of Adin (Ash Valley (RNA/ACEC)); Ash Valley 1554 Comment
  HSC63959  Plectritis macrocera Teresa Prendusi 1980-5-19 Lassen Saddle Rock. 1524 Comment
  SEINET780337  Plectritis macrocera B. J. Cox, D. B. Dunn 1971-6-2 3116 Lassen Six miles N of Halleujah jct. on U.S. Hwy. 395, in Artemesia tridentata. 1402 Comment
  CAS-BOT-BC326713  Pleiacanthus spinosus Gordon H. True 1973-8-22 7658 Lassen North shore of Honey Lake ca. 5 miles east of Janesville and just west of Hartson Reservoir Comment
  CAS-BOT-BC326715  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade south of and paralleling Highway 70 just southeast of Beckwourth Pass on Plumas-Lassen county line 1584 Comment
  HSC68933  Pleuricospora fimbriolata Gary Schoolcraft 1980-7-29 341 Lassen On Big Valley Mountain timber sale area, W of Bieber, CA. 1829 Comment
  RSA484154  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
  UCD92183  Poa George A. Fischer; Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat - Lassen Nat'l Forest. 1737 Comment
  CAS-BOT-BC255679  Poa bolanderi Clare B. Hardham 1971-8-22 18912 Lassen Diamond Mountain 2133 Comment
  JEPS114748  Poa bulbosa Lowell Ahart, John Dittes 2008-6-22 15035 Lassen About 220 yards west of the road levee, on the banks of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  UC1924563  Poa bulbosa Debra Valov 2006-5-30 2006035 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UCD90624  Poa bulbosa Beecher Crampton 1964-6-27 7096 Lassen ca. 8 miles southeast of Ravendale Bureau Land Management Spanish Springs--Shinn Mtns. Resource Conservation area. 1981 Comment
  SEINET10868155  Poa bulbosa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17757 Lassen Approx. 12 mi S of Adin on Calif. Hwy 139, in basalt & clay; along edge of road on rolling knol, in Artemisia-Juniper assoc. 1372 Comment
  CAS-BOT-BC255034  Poa compressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49506 Lassen Elysian Valley, W of Janesville 1325 Comment
  UC1024815  Poa cusickii subsp. cusickii Leo Whitney 1935-6-19 3264 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest 1722 Comment
  JEPS114849  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2008-6-22 15020 Lassen On the road sides of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  CAS-BOT-BC255017  Poa secunda J. D. Schoeller 1928-5-27 406 Lassen Laufman Canyon Summit 1889 Comment
  CAS-BOT-BC255021  Poa secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49521 Lassen Elysian Valley, W of Janesville 1325 Comment
  JEPS85786  Poa secunda Roy E. Buck and Robert A. Price 1988-6-26 1027 Lassen ca 30 air km nne Susanville (Fredonyer Peak, on subsidiary peak ca 0.5 air km n of main summit) 2377 Comment
  UC1951068  Poa secunda Debra Valov 2009-4-26 2009024 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET10522723  Poa secunda Jeffrey Huber 1971-6-2 Huber 106 Lassen 4 mi S of Adin along CA Hwy 139 in basalt-clay; valley floor in Artemesia. 1341 Comment
  CHSC115514  Poa secunda subsp. juncifolia Lowell Ahart; John Dittes 2015-7-14 20331 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
  SJSU15450  Poa secunda subsp. juncifolia John Rawlings, Sara Timby 2014-6-15 1265 Lassen In and around BLM campground at north end of Eagle Lake. 1580 Comment
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Feb 18 2015
  UC1153860  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2048 Lassen 4.5 mi w Susanville 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
  UC39629  Poa secunda subsp. juncifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3316 Lassen Honey Lake Valley Comment
  UCD92243  Poa secunda subsp. juncifolia Beecher Crampton 1960-6-18 5713 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD92368  Poa secunda subsp. juncifolia J. B. Davy 17-24 Jun 1897 s.n. Lassen Honey Lake Valley. Comment
  UCD92397  Poa secunda subsp. juncifolia A. H. Shunk 1923-8-5 9 Lassen Bogard Ranger Station. Comment
  CAS-BOT-BC236181  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49196 Lassen Elysian Valley NW of Janesville 1325 Comment
  CHSC23556  Poa secunda subsp. secunda W. O. Baum 1971-7-5 12 Lassen E slope of Gallatin Peak. 1981 Comment
  CHSC91208  Poa secunda subsp. secunda Lowell Ahart; John Dittes 2005-6-1 11845 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1024874  Poa secunda subsp. secunda Leo Whitney 1935-5-26 3151 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1132629  Poa secunda subsp. secunda C. W. Hanks 1934-9-27 96 Lassen Long Valley; Plumas Nat'l forest, Sierraville Quadrangle Comment
  UC1132876  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 737 Lassen 5.9 mi s Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132878  Poa secunda subsp. secunda Robert W. Gardner 1939-6-28 G- 31 Lassen Little Harvey Valley; Halls Flat Quadrangle Comment
  UC1132883  Poa secunda subsp. secunda A. Simontacchi 1940-5-13 697 Lassen 4.6 mi sw of B. M. 7310 on Blacks Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC70684  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UC1037308  Polemonium occidentale Leo Whitney 1934-7-24 1582 Lassen ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek, Lassen National Forest); Lassen National forest, near Bridge Ceek, sw Eagle Lake 1737 Comment
  UC449772  Polemonium occidentale Franklin P. Nutting 1894-7-28 Lassen Bridge Creek Bridge Creek (Northern California) Comment
  CAS-BOT-BC263248  Polemonium pulcherrimum var. pulcherrimum R. Stubbs 2010-8-9 019 Lassen Dixie Mountain Peak Lookout. Only seen down trail from lookout towards bathroom on the south slope 2516 Comment
  CHSC29868  Polyctenium fremontii Robin L. Ondricek 1978-6-20 66 Lassen At edge of tree line around Mahogany Lake; s of Eagle Lake. 2057 Comment
  RSA487941  Polyctenium fremontii A. Tiehm, Jan Nachlinger, M. Williams 1988-6-2 11703 Lassen 6.6 miles north of the Wendel Rd. on Hey 395 from Susanville to Alturas. 1348 Comment
  SEINET229584  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Hwy 395. 1609 Comment
  CHSC117618  Polygala subspinosa L. P. Janeway and B. Castro 2015-6-5 11765 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC117761  Polygala subspinosa Virginia Dains; Joanne Crawford 2016-6-14 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 20 km northeast of Skedaddle Mtns, 11 km east of Highway 395, 1.5 km north of Smoke Creek Ranch Road. 1432 Comment
  UC1136918  Polygonum George A. Fischer, Irwin H. Johnson 1933-7-12 F 192 Lassen Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley 1694 Comment
  NY404577  Polygonum amphibium G. H. True Jr. 1936-6-22 514 Lassen Honey Lake Valley 1219.2 Comment
  UC6720  Polygonum amphibium var. emersum J. Burtt Davy Jun 17 1897-Jun 24 1897 3321 Lassen Honey Lake Valley; shallow w end of lake Comment
  UC1536797  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch Honey Lake Valley Comment
  CAS-BOT-BC419767  Polygonum argyrocoleon John Thomas Howell 1976-7-20 52030 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC419769  Polygonum argyrocoleon G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC. Comment
  CHSC99299  Polygonum aviculare Lowell Ahart; John Dittes 2008-6-20 14931 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC414490  Polygonum douglasii John Thomas Howell 1974-7-10 50562 Lassen Elysian Valley 1325 Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 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
  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
  UC1924203  Polygonum lapathifolium Debra Valov 2005-8-20 2005221 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 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-BC419860  Polygonum polygaloides subsp. confertiflorum Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 757 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  JEPS121265  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2013-7-23 18905 Lassen On the NW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS83273  Polygonum polygaloides subsp. confertiflorum J. D. Jokerst 1983-7-24 1883 Lassen Madeline Plains nw of Ravendale; Madeline Plains 1584 Comment
  RSA339992  Polygonum polygaloides subsp. confertiflorum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9466 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 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
  UC1609321  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  UC1136189  Polygonum polygaloides subsp. kelloggii A. Simontacchi 1940-6-4 807 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  HSC82252  Polygonum spergulariiforme Thomas W. Nelson, Jane P. Nelson 1980-7-6 6009 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CHSC93665  Polypogon monspeliensis Lowell Ahart; John Dittes 2005-6-2 11967 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  JEPS88211  Polypogon monspeliensis Vernon H. Oswald and Lowell Ahart 1996-6-17 7791 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, trailside just s.e. of Hwy 36 bridge spanning the Susan R.); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  UC1100378  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1478 Lassen 1 mi n Doyle (Honey Lake Valley, marshy banks of Long Creek); Honey Lake Valley, banks of Long Creek Comment
  UC1132901  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen near Red Rock; Sierraville Quad., near Red Rock 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
  JEPS17746  Porterella carnosula Rimo Bacigalupi with G. T. Robbins 1955-7-20 5408 Lassen 4.4 mi s Patterson Ranger Station (Long Valley, southern end of Warner Mts., Modoc National Forest); Modoc National Forest, s end of Warner Mts. 2057 Comment
  JEPS28708  Porterella carnosula George W. Gillett 1957-7-29 938 Lassen near w end Widow Lake (Widow Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Widow Lake 2072 Comment
  UC803937  Porterella carnosula G. L. Stebbins Jr. 1949-8-6 4002 Lassen edge Feather Lake (between Susanville and McArthur Mud Flats) 1676 Comment
  SEINET10460826  Porterella carnosula Gary Schoolcraft 1980-7-16 Schoolcraft 318 Lassen T38N R12ESE 1/4 Sec 23 Comment
  SEINET10460829  Porterella carnosula Howell 1934-7-7 Howell 12466 Lassen Near Feather Lake Comment
  SEINET12326931  Porterella carnosula Unknown 1978-1 15 Lassen E shore Mahogany L., S of Eagle L., T31N;R11E, sec. 21 2060 Comment
  CAS-BOT-BC452093  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  POM118979  Potamogeton natans Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  JEPS103226  Potamogeton nodosus G. Schoolcraft 1996-9-11 2563 Lassen Willow Creek below petroglyphs above dam 1341 Comment
  UC1100075  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8243 Lassen e end of Tule Lake Comment
  CAS-BOT-BC454091  Potamogeton pusillus subsp. tenuissimus Verne Grant; Irving Schneider 1947-7-31 8212 Lassen Northeast quarter of George Williams section 19, Madeline Plain Comment
  UCR228123  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 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
  UC60851  Potamogeton striatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3357 Lassen marsh near Amedee; Honey Lake Valley Comment
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 Comment
  OBI77552  Potentilla biennis Anthony Baniaga 2011-7-23 460 Lassen Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4 1700 Comment
  POM34025  Potentilla glandulosa subsp. ashlandica Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC506995  Potentilla gracilis George A. Fischer and Irwin H. Johnson 1933-7-12 F 208 Lassen Grass Valley Lassen National Forest, Grass Valley 1700 Comment
  CHSC93529  Potentilla gracilis var. fastigiata Lowell Ahart; John Dittes 2005-6-1 11854 Lassen Long Valley, on the west side of the poor dirt road, about 1/2 mile west of Scott Road, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  POM260871  Potentilla gracilis var. fastigiata Alice Eastwood 1940-6-11 7997 Lassen Bieber Comment
  SBBG3009  Potentilla gracilis var. flabelliformis H. and M. Dearing 1938-7-1 2240 Lassen W of Susanville Comment
  SJSU5833  Potentilla millefolia J. W. Tilden 1960-6-27 1512 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  UCD113957  Potentilla rivalis G. Schoolcraft 2000-6-13 2902 Lassen Susanville. Cold Spring Valley. 1645 Comment
  CHSC12434  Prunella vulgaris Robert W. Severin 1969-6-25 13 Lassen At sw corner Murrer's Upper Meadow, 50' n mouth of Bly Tunnel; 2 mi ese E. L. B. S. 1584 Comment
  CHSC30570  Prunella vulgaris Sori H. Shad 1970-6-24 31 Lassen Collected in upper Murrer's Meadow. 1524 Comment
  CAS-BOT-BC159781  Prunus andersonii Margaret Williams 1974-8-4 74 -L-75 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CDA26124  Prunus andersonii S. E. Piper 1943-7-14 Lassen Southwest, south and east edges of Honey Lake Desert. 1 mile east of Herlong. 0 Comment
  CHSC106567  Prunus andersonii K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  CHSC106581  Prunus andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  OBI77048  Prunus andersonii Anthony Baniaga 2011-7-1 412 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  RSA123188  Prunus andersonii E. Sawyer 1935-6-27 10893 Lassen Long Valley. 1311 Comment
  SJSU13984  Prunus andersonii N. A. Hopkins 1988-5-16 1400 Lassen Scott Rd by Long Valley Cr c. 3 mi N of Hwy 70 1432 Comment
  CAS-BOT-BC154614  Prunus subcordata John Thomas Howell 1974-7-8 50496 Lassen Susanville 1295 Comment
  CHSC7721  Prunus virginiana var. demissa Beverley J. Wise 1969-5-18 192 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On canyon wall. 1554 Comment
  CHSC91204  Prunus virginiana var. demissa Lowell Ahart; John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  UCD113534  Prunus virginiana var. demissa W. Robert Powell 1985-7-30 3080 c Lassen about 3 miles WNW of Susanville on narrow flood plane of Piute Creek. 1402 Comment
  JEPS127720  Pseudoroegneria spicata Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -175 Lassen 171 west from 385 south. After the second tight switchback the population is off the road downslope. Comment
  UCD91501  Pseudoroegneria spicata Beecher Crampton 1954-7-5 2053 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD91513  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51997 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  UC188856  Pseudoroegneria spicata subsp. spicata Milo S. Baker Lassen s side of Dixie Valley Dixie Valley Comment
  CHSC27600  Psilocarphus brevissimus var. brevissimus J. D. Prouty 1978-6-28 4 Lassen Lower Dry Lakes, SE of Eagle L. Comment
  JEPS109637  Psilocarphus brevissimus var. brevissimus Dean W. Taylor 2002-6-21 18174 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  JEPS117492  Pterospora andromedea Lowell Ahart, John Dittes 2010-7-31 17007 Lassen On the sout side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1137729  Pterospora andromedea L. R. Short and D. Gish 1936-7-15 S- 488 Lassen Burgess Spr. Exp. Range Lassen National Forest 1813 Comment
  UC1562803  Pterospora andromedea Barbara Ertter 1987-7-25 7319 Lassen Hwy 44 ca 1 mi E of Shasta Co. line 1645 Comment
  UCD91890  Puccinellia lemmonii Freed W. Hoffman 1946-5-28 1820 Lassen Beiber. Comment
  SEINET3394464  Purshia tridentata E. D. McArthur 1982-1 EDM- 1356 Lassen NW of Janesville at Jct of crossroads 205 & 219 Comment
  UC1128551  Purshia tridentata var. tridentata A. Simontacchi 1940-6-4 798 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1836 Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. Comment
  CAS-BOT-BC462755  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CHSC6237  Pyrola picta P. Balch 1955-7-22 Lassen Between Eagle Lake and Pittville road. 1676 Comment
  CHSC60880  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald; Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd. (Lassen 111, 36N01) 3.0 mi N of Hwy. 44, NE of Poison Lake. 1709 Comment
  UC1136851  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range 1783 Comment
  UC1584018  Pyrrocoma hirta var. lanulosa G. Schoolcraft 1990-8-1 2119 Lassen about 1 mi s Heath Reservoir 1737 Comment
  CDA8517  Pyrrocoma lanceolata var. lanceolata T. C. Fuller 1980-8-6 20315 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  JEPS109778  Pyrrocoma lucida Dean W. Taylor 2002-8-10 18309 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  CHSC91189  Quercus kelloggii Lowell Ahart; John Dittes 2005-6-2 11942 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
  RSA67201  Quercus kelloggii P. A. Munz 1951-9-15 16986 Lassen On dry flats, 6 mi west of Bieber. 1341 Comment
  RSA715982  Quercus kelloggii L. Ahart, John Dittes 2005-6-2 11942 Lassen 1.5 miles NE of the Anderson Ranch home, Long Valley, 6 miles (air) N of intersection of Scott Road and Hwy 70, 7.5 miles (air) NW of Hallelujah Jct. 1602 Comment
  CHSC7774  Ranunculus Beverley J. Wise 1969-5-18 147 Lassen Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake. 1554 Comment
  JEPS55017  Ranunculus alismifolius var. alismifolius Leland S. Smith 1927-5-25 3 Lassen near Westwood Junction; Lassen Forest, Norval Flat 1747 Comment
  CHSC27739  Ranunculus alismifolius var. hartwegii J. D. Prouty 1978-7-5 17 Lassen NE shore of Mahogany L., S of Eagle L. Meadow around lake. 2060 Comment
  HSC27356  Ranunculus alismifolius var. lemmonii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19192 Lassen Harvey Valley near Cone Springs Comment
  HSC95301  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC112451  Ranunculus aquatilis var. aquatilis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18797 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-BC334481  Ranunculus aquatilis var. capillaceus R. F. Thorne; Larry E. DeBuhr 1975-8-22 46981 Lassen Along Hwy 395 ca 6 miles N of Madeline and 4.5 miles S of Modoc county line. 1616 Comment
  JEPS88527  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1996-6-24 7877 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  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
  CHSC6246  Ranunculus canus W. Vinyard 1946-6-13 Lassen Pine Creek, Eagle Lake. 60 Comment
  CHSC75526  Ranunculus cymbalaria var. saximontanus Vernon H. Oswald; Lowell Ahart 1999-6-9 9757 Lassen Northeast of Susanville and 4.1 mi south of Biscar Wildlife Management Area on BLM 26030 at the water crossing on Secret Creek. 1347 Comment
  RSA523410  Ranunculus cymbalaria var. saximontanus Rodney H. True 1936-6-26 544 Lassen Honey Lake Valley- Willow Creek Valley Road. 1524 Comment
  UC1136880  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spr. Exp. Range Lassen National Forest 1737 Comment
  UC773872  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spring Experiment Range Lassen National Forest 1737 Comment
  UC1608992  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald and Lowell Ahart 1993-5-12 5383 Lassen Forest Rd 32N08 (to Crater Lake) 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, along creek); Pine Creek 1737 Comment
  RSA74352  Ranunculus occidentalis var. ultramontanus Milo S. Baker 1952-5-23 12409 Lassen Along Hwy 36, betw Pluster and Fredownyer Pass. Comment
  CHSC101037  Ranunculus populago John Dittes 2008-5-22 1526 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek. 482 Comment
  JEPS94133  Ranunculus testiculatus Vernon H. Oswald and Lowell Ahart 1988-5-22 9101 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
  CHSC68903  Ranunculus uncinatus var. uncinatus Vernon Oswald; Lowell Ahart 1997-6-24 8613 Lassen South of Susanville on the north side of Diamond Mtn. at a slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. Along a roadside ditch. 1889 Comment
  CHSC44887  Ratibida columnifera Lowell Ahart; John Thomas Howell 1974-7-9 513 Lassen Near the south-west side of Eagle Lake. 1584 Comment
  CAS-BOT-BC362886  Ratibida columnifera John Thomas Howell 1974-7-9 50486 Lassen SW. of Wildcat Point, Eagle Lake 1554 Comment
  JEPS127350  Rhaponticum repens Lowell Ahart, John Dittes 2016-7-13 21103 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS124781 Image available Rhus aromatica C. Meek 1969-7-9 85 Lassen On south facing slope overlooking the Pitt Gorge off Hi #299; 2 mi West of Fall River Mills. Comment
  SEINET5845254  Ribes C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  CAS-BOT-BC93392  Ribes cereum Milo S. Baker 1894-6-1 s.n. Lassen South side Dixey Mountains. Comment
  CDA25528  Ribes cereum J. R. Keck Jr. 1977-7-13 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  UC1127635  Ribes cereum A. Simontacchi 1940-6-15 882 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC747359  Ribes cereum G. Thomas Robbins 1945-10-6 2149 Lassen summit Crater Lake Mt. (above lake); Lassen National Forest 2194 Comment
  CAS-BOT-BC93389  Ribes cereum Hans Leschke 1960-8-10 1782 Lassen Lassen National Park. Near Badger Flat. 1912 Comment
  CHSC68749  Ribes cereum var. cereum Vernon H. Oswald; Lowell Ahart 1997-5-27 8515 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
  JEPS49414  Ribes inerme var. inerme Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  NY455349  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 miles east of Fredonyer Pass 1706.9 Comment
  SEINET12216573  Ribes roezlii Unknown 1972-1 286 Lassen 1 mi S of Five Points on Dean's Ridge Rd going to Dean's Meadow Comment
  CDA25586  Ribes velutinum J. R. Keck Jr. 1977-8-1 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 Comment
  CAS-BOT-BC173959  Ribes viscosissimum John Thomas Howell; Gordon H. True 1973-8-1 50247 Lassen Gold Run Creek road south of Susanville. Diamond Range 1950 Comment
  RSA0020889  Ribes viscosissimum K. M. Meyer, A. Townesmith 2007-7-23 151 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  UC1523807  Ribes viscosissimum Gary Schoolcraft 1982-8-9 860 Lassen near Susanville; Diamond Mtn. 2011 Comment
  CAS-BOT-BC363009  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen Lower NE slope of Shaffer Mtn. Comment
  UC1924227  Rorippa curvipes Debra Valov 2004-6-8 2004247 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  RSA431533  Rorippa curvisiliqua Rockwell s.n. Lassen Eagle Lake. Comment
  UC1126740  Rorippa nasturtium-aquaticum Robert W. Gardner 1937-6-16 G- 15 Lassen Burgess Spring Experimental Range Halls Flat Quad., Burgess Spring Experimental Range Comment
  CHSC5241  Rorippa palustris var. occidentalis V. Holt 1945-6-5 Lassen Aspen Grove, Eagle Lake. 1584 Comment
  POM312442  Rorippa sinuata Verne Grant, Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  CHSC13947  Rorippa sphaerocarpa M. S. Taylor 1974-7-8 265 Lassen On bank of levee, ca. 1 mi n of Honey Lake, ca. 1 mi s of Standish, Honey Lake Wildlife Refuge. Comment
  CHSC12463  Rosa woodsii subsp. ultramontana Robert W. Severin 1969-6-26 44 Lassen Springs area 1 mile north of Galatin Beach, 3 mi s of E.L.B.S. 1645 Comment
  CDA26287  Rosa woodsii var. ultramontana Gordon Leppig, T. LaBlanca 1998-7-13 874 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC106587  Rosa woodsii var. ultramontana C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  RSA647522  Rosa woodsii var. ultramontana Marion P. Harthill 1972-6-16 803 Lassen Litchfield 1311 Comment
  UC1137304  Rosa woodsii var. ultramontana L. R. Short and Wm. Gansberg 1936-7-9 S- 484 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  CAS-BOT-BC148359  Rubus leucodermis Hans Leschke 1964-9-3 1893 Lassen Butte Lake, near Cold Spring on trail to Cinder Cone - Lassen Volcanic National Park Comment
  UC1070543  Rumex H. S. Yates 1936-8-11 6057 Lassen near Red Rock; Sierraville Quad. 1341 Comment
  CAS-BOT-BC421953  Rumex acetosella Paul Gallian; B. J. Cox 1971-6-2 482 Lassen 5 miles South of Milford near Honey Lake on U.S. Hwy. 395 1249 Comment
  CAS-BOT-BC421955  Rumex acetosella Margaret Williams; Steven Williams 1974-7-26 74 -L-23 Lassen Near Hellelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC7737  Rumex crispus Beverley J. Wise 1969-5-23 80 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  JEPS121297  Rumex crispus Lowell Ahart 2013-7-22 18865 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1745691  Rumex salicifolius var. lacustris Annetta M. Carter 1945-9-30 1718 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CHSC99509  Rumex salicifolius var. triangulivalvis Lowell Ahart; John Dittes 2008-6-20 14930 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CDA23213  Rumex salicifolius var. triangulivalvis T. C. Fuller 1959-7-7 Lassen Highway 395, 11 miles south of Ravendale. 0 Comment
  CHSC113065  Rumex stenophyllus Lowell Ahart; John Dittes 2013-7-22 18866 Lassen North margin of road levee, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC111165  Rumex triangulivalvis Lowell Ahart; John Dittes 2012-7-9 18302 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
  SEINET4176394  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  UC568  Sagittaria State Geological Survey 1800-1 2189 Lassen Comment
  CHSC27591  Sagittaria cuneata J. D. Prouty 1978-7-23 24 Lassen Upper Murrers Meadow, SE of Eagle L. 1545 Comment
  UC935793  Sagittaria cuneata Calvin McMillan and Malcolm A. Nobs 1949-6-15 785 Lassen Nubieber Comment
  CAS-BOT-BC132739  Salix arctica E. B. Copeland 1931-8-16 s.n. Lassen Mount Lassen, on the south shore of Emerald Lake 2370 Comment
  CHSC96714  Salix eastwoodiae Gordon Leppig; J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CAS-BOT-BC108057  Salix exigua John Thomas Howell; Gordon H. True 1973-8-1 50150 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1584 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
  CAS-BOT-BC104044  Salix hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen McArthur, at edge of Pit River 950 Comment
  JEPS114627  Salix lasiandra subsp. lasiandra Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  CAS-BOT-BC128173  Salix lasiandra var. lasiandra Hans Leschke 1960-8-8 1736 Lassen Below trail ski hut, Crumbaugh Lake 1981 Comment
  CAS-BOT-BC128175  Salix lasiandra var. lasiandra G. Schoolcraft 1999-5-7 2822 Lassen Susanville 1371 Comment
  JEPS88212  Salix lasiandra var. lasiandra Vernon H. Oswald and Lowell Ahart 1996-6-17 7790 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau 1402 Comment
  POM209469  Salix lemmonii Carleton R. Ball 1932-7-24 687 Lassen Mt. Lassen Highway. 0.6 mile N of Sulphur Works Checking Station. Lassen Volcanic National Park. 1982 Comment
  CHSC99729  Salix lucida subsp. lasiandra Lowell Ahart; John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. 1257 Comment
  RSA715977  Salix lucida subsp. lasiandra L. Ahart, John Dittes 2005-6-2 11925 Lassen Along a small ditch. Along the road. Near the Anderson Ranch home. Long Valey. About 4.75 miles (air) N of the intersection of Scott Rd and Hwy 70. 6.2 miles (air) NW of Hallelujah Jct. 1460 Comment
  SEINET10952234  Salix lucida subsp. lasiandra Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 139 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 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
  JEPS96090  Salix scouleriana Vernon H. Oswald and Lowell Ahart 1996-6-17 7770 Lassen on n side of Hwy 36 ca 0.2 mi e & mile post (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1432 Comment
  CDA5749  Salvia aethiopis Margaret Bellue Jul 1949 Lassen Susanville. 0 Comment
  CHSC106175  Salvia aethiopis Lowell Ahart; John Dittes 2010-8-30 17091 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
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  JEPS94499  Salvia aethiopis Vernon H. Oswald and Lowell Ahart 1997-5-27 8482 Lassen just n of Susanville (w side of Highway 139 at Lassen Community College); Lassen Community College, Highway 139 1310 Comment
  RSA339985  Salvia aethiopis Noel Holmgren, Patricia K. Holmgren 1980-7-3 9459 Lassen US Highway 395, 7.9 km (4.9 mi) south of Likely 1550 Comment
  HSC27359  Salvia dorrii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19296 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC214313  Salvia dorrii var. pilosa Ella Dales Cantelow 1941-5-22 3656 Lassen 2 1/2 mi. n. of Secret Valley C.C.C. Camp, Hy. 395, Quincy to Alturas Comment
  SEINET12319555  Sambucus caerulea Unknown 1978-1 27 Lassen SE end of Eagle L., base of basalt boulders from Black Mnt., T32N,R11E, sec.22 1609 Comment
  CHSC5226  Sambucus melanocarpa A. Santos 1946-6-17 Lassen E side of Eagle Lake. 1615 Comment
  JEPS5934  Sambucus racemosa var. microbotrys Frances D. Payne 1929-7-12 80 Lassen Lost Lake Warner Mountains (se extremity of mts.) 2286 Comment
  UCD127944  Sanicula bipinnatifida W. W. Robbins 1926-4-17 534 Lassen Grass Valley. Comment
  JEPS94454  Sanicula graveolens Vernon Oswald and Lowell Ahart 1997-6-24 8629 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  JEPS103224  Sanicula graveolens G. Schoolcraft 1992-5-1 2235 Lassen W. of Susan Hills Subd. SW. of Susanville 1341 Comment
  POM83011  Sanicula graveolens Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  SEINET3239873  Santalaceae R. L. Mathiasen 2010-1 1018 Lassen 16 km W of north entrance to Lassen Nat. Park on Rte. 44 1380 Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC31116  Sarcobatus vermiculatus J. S. White 1980-4-14 114 Lassen Basin area. 0.1 mi n of US Hwy 395 3.5 mi e of Litchfield. 1341 Comment
  SJSU14475  Sarcobatus vermiculatus W. D. Pitts 1990-5-29 298 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  UCD101770  Sarcobatus vermiculatus Beecher Crampton 1960-6-19 5730 Lassen southeast of Karlo; along U.S. Hwy 395. Comment
  UC1121106  Sarcodes sanguinea A. Simontacchi 1940-6-17 883 Lassen 1.4 miles S of Patterson Mtn. 1821 Comment
  JEPS1765  Saxifraga nidifica var. nidifica Milo S. Baker 1952-5-23 12422 Lassen e of Chester (Hwy 36) Comment
  CHSC91792  Schoenoplectus acutus var. occidentalis L. P. Janeway 2005-8-27 8525 Lassen High Cascade Range. Northwest shore of Eagle Lake; east end of Sandy Beach, west side of Rocky Point. 1550 Comment
  UC1100464  Scribneria bolanderi Malcolm A. Nobs, S. Galen Smith, Herbert L. Mason 1949-5-29 759 Lassen Nubeiber, on Great Northern Railroad, Highway 299 Nubeiber; , Great Northern Railroad, Highway 299 Comment
  UCD92528  Scribneria bolanderi Malcolm A. Nobs; S. Galen Smith, Herbert L. Mason 1949-5-29 759 Lassen on Great Northern Railroad, Highway 299, Nubeiber. Comment
  UC1713590  Scutellaria holmgreniorum G. Schoolcraft 1986-6-18 1630 Lassen s side of Smoke Creek (between Shinn and Smoke Creek ranches) 1493 Comment
  SEINET3861523  Scutellaria holmgreniorum Noel H. Holmgren, Patricia K. Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy-395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale.; 0 1585 Comment
  SEINET10499152  Scutellaria nana Mary Merello 1993-6-28 Merello 750 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
  UC1549235  Scutellaria nana Richard Olmstead 1983-7-2 415 Lassen 16 mi s of Ravendale (1 mi s of rest area, near small stream, along US 395); US 395 1444 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
  UC205197  Sedum stenopetalum Franklin P. Nutting Lassen Dixey Valley Dixey Valley (sage-brush flat) Comment
  CAS-BOT-BC363326  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen West of Fredonyer Pass 1676 Comment
  HSC95277  Senecio hydrophilus Gordon Leppig 1998-8-17 1057 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1063253  Senecio integerrimus var. exaltatus A. Simontacchi 1940-5-15 712 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quad. 1699 Comment
  RSA0124944  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14 .772 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  SJSU13986  Senecio integerrimus var. exaltatus N. A. Hopkins 1988-5-16 1399 Lassen by Scott Valley Rd W of Long Valley Cr 4 mi N of Hwy 70 1524 Comment
  JEPS100319  Senecio spartioides Dean W. Taylor 2001-7-12 17830 Lassen Diamond Mountains, headwaters of Rhodes Creek, along Forest Road 24N02X 1996 Comment
  CAS-BOT-BC364254  Senecio triangularis Clare B. Hardham 1971-8-22 18409 Lassen Diamond Mountain. Aspen Swamp, North slope 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
  CHSC105238  Sidalcea glaucescens Lowell Ahart; John Dittes 2010-7-31 17016 Lassen On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  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
  RSA768029  Sidalcea glaucescens L. Ahart, John Dittes 2010-7-31 17016 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  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
  UC871446  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen 1 mi w Bieber (overflow of Pit River); Pit River Comment
  UC871518  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen 1 mi w Bieber (overflow of the Pitt River); Pitt River, w of Bieber Comment
  UC186050  Sidalcea oregana subsp. spicata T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  POM84786  Sidalcea oregana subsp. spicata Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  NY746728  Sidalcea oregana var. maxima A. Tiehm 1988-6-2 11704 Lassen East side of Snowshoe [Snowstorm?] Mountain, 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway 1402 Comment
  SEINET246897  Sidalcea oregana var. maxima Unknown 1988-6-2 11704 Lassen East side of Snowshoe Mt., 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway. 1402 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-BC384310  Silene bernardina George W. Gillett 1957-7-24 896 Lassen Lassen Volcanic National Park. Flats between Cameron Meadow and Snag Lake 1950 Comment
  CAS-BOT-BC136279  Silene douglasii A. G. Brennels 1928-7-3 7 Lassen Lassen Forest, Jesson Valley 1463 Comment
  CHSC5229  Silene douglasii J. B. Kimsey 1946-6-10 Lassen Eagle Lake. Pelican Point. 1584 Comment
  UC1523715  Silene douglasii Gary Schoolcraft 1981-7-15 512 Lassen near top Fredonyir Peak; near top Fredonyir Peak 2346 Comment
  CHSC91925  Silene nuda L. P. Janeway 2005-7-31 8511 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  JEPS50954  Silene nuda W. L. Jepson 1918-8-2 7758 Lassen Beckwith Pass 1463 Comment
  UC120167  Silene nuda unknown 1892-6-24 Lassen Honey Lake Comment
  CHSC91206  Sisymbrium altissimum Lowell Ahart; John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  NY189188  Sisymbrium altissimum B. Anderson 1986-7-9 3123 Lassen Road to Day, about 2.4 km N of Rte. 299. 1065 Comment
  SEINET10448866  Sisymbrium altissimum Paul Gallian, David B. Dunn 1971-6-2 Gallian 521 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. Comment
  SEINET11987253  Sisymbrium altissimum J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4135 Lassen 65 mi S of Alturas, along edge of hwy #395 Comment
  UCD115496  Sisymbrium altissimum P. B. Kennedy 1927-9-1 s.n. Lassen Janesville. Comment
  UCD115529  Sisymbrium altissimum R. Tofsrud 1951-7-13 s.n. Lassen Bieber area, Albaugh ranch. Comment
  CHSC91178  Sisyrinchium bellum Lowell Ahart; John Dittes 2005-6-2 11948 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
  CDA38565  Sium F. A. Taylor 1939-7-5 s.n. Lassen Bieber. 0 Comment
  POM82470  Sium suave Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC365368  Solidago elongata Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  CHSC59081  Solidago elongata Vernon H. Oswald; Lowell Ahart 1992-8-25 5177 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Edge of meadow. 1950 Comment
  UC1583971  Sonchus asper G. Schoolcraft 1990-7-31 2117 Lassen along Hwy 299 between Bieber and Nubieber 1249 Comment
  JEPS124384  Sonchus asper subsp. asper Lowell Ahart, John Dittes 2015-7-13 20304 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  HSC95262  Sparganium emersum Gordon Leppig, J. Cromwell 1997-7-27 627 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC66285  Sparganium emersum subsp. emersum Vernon H. Oswald; Lowell Ahart 1996-6-24 7871 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CAS-BOT-BC438841  Sparganium natans Andrew Townesmith; Karen M. Meyer 2007-7-22 844 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. 1981 Comment
  JEPS103181  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  POM161479  Sphenosciadium capitellatum Franklin P. Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  UC1137688  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spr. Exp. Range Lassen Forest 1795 Comment
  JEPS95975  Stanleya viridiflora Vernon H. Oswald and L. 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: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  SEINET11604939  Stanleya viridiflora L. Bass 1982-7-25 10 -82 Lassen Near Karlo, ca 12 miles N of Litchfield. 1356 Comment
  UCD99328  Stellaria longipes subsp. longipes Ratliff 1966-7-8 1 Lassen Harvey Valley Allot. - Plot 49. 1706 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
  JEPS114768  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2008-6-20 14956 Lassen About 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC68848  Stenotus acaulis Vernon Oswald; Lowell Ahart 1997-6-24 8630 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC92676  Stenotus acaulis L. P. Janeway; B. Castro 2005-7-10 8487 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  CAS-BOT-BC375066  Stephanomeria Gordon H. True 1973-8-22 7657 Lassen North shore of Honey Lake ca. 5 miles east of Janesville & just west of Hartson Reservoir 1219 Comment
  CAS-BOT-BC375595  Stephanomeria lactucina Margaret Williams; Steven Williams 1974-7-26 74 -L-12 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS36876  Stephanomeria lactucina Brown and Wieslander 1922-7-19 40 Lassen Martin Springs Eagle Lake Comment
  CAS-BOT-BC375593  Stephanomeria lactucina Gary Schoolcraft 1982-7-14 785 Lassen West on Constantia 1463 Comment
  JEPS94085  Stephanomeria paniculata Vernon H. Oswald and Lowell Ahart 1998-9-8 9588 Lassen Kramer Rd. 3.1 mi. s. Lookout 1280 Comment
  CAS-BOT-BC322925  Stephanomeria tenuifolia Clarence R. Quick 1964-8-5 64 -95 Lassen Cal Mt. east of Poison Lake 1767 Comment
  HSC24234  Stipa comata John Pratt 1970-6-27 49 Lassen .5 mi. E of Turtle Head Comment
  UCR244065  Stipa comata Jim Andre, G. L. Clifton 1993-6-9 19691 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
  HSC22318  Stipa nelsonii subsp. dorei D. E. Anderson 1969-7-5 4992 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  CAS-BOT-BC61289  Streptanthus cordatus var. cordatus Alice Eastwood; John Thomas Howell 1940-6-15 8309 Lassen Willow Creek near Hayden Hill. Comment
  UCD149957  Stuckenia filiformis subsp. alpina William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  UC7240  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3325 Lassen Honey Lake Valley 1828 Comment
  CHSC48447  Swertia albicaulis var. albicaulis Vernon Oswald 1986-5-28 2060 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  CHSC60831  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-28 5605 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  JEPS87423  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (Road 35N04 at Aspen Well, n of Hwy 44 on nw edge of Harvey Valley); Harvey Valley, Aspen Well 1725 Comment
  UC223697  Symphyotrichum ascendens Elmer I. Applegate 1923-9-30 4036 Lassen Constantia, Honey Lake Valley Comment
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Feb 4 2016
  UC773956  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1792 Comment
  CHSC118847  Symphyotrichum bracteolatum L. P. Janeway 2015-8-10 11830 Lassen Warner Mountains. Steep west-facing slope above the 64 Road (39N01 - the road to Patterson Campground), 0.2 km north-northeast of crossing of East Creek; between Peterson Meadow and Long Valley. 2047 Comment
  CHSC66848  Symphyotrichum frondosum Vernon H. Oswald 1996-9-21 8286 Lassen Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. On the S edge of Willow Creek ca. 1 mi E of the parking area on the highway. 1490 Comment
  UC1192071  Symphyotrichum frondosum Verne Grant and Irving Schneider 1947-9-5 8375 Lassen northwest shore of Eagle Lake by Sam Webb's place Comment
  UC1745661  Symphyotrichum frondosum Annetta M. Carter 1945-9-30 1724 Lassen