Search Results — 2000 specimen records retrieved (1640 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  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
  UC1196917  Abies magnifica var. magnifica A. W. and M. Kildale 1926-9-1 2725 Lassen 11 mi n Chester; Lassen National Park, Juniper Lakes 2054 Comment
  CAS-BOT-BC28648  Achillea millefolium Louella Bass 1973-5-29 72 Lassen Elysian Valley 1325 Comment
  CHSC4769  Achillea millefolium R. Carter 1967-7-16 619 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side on rd. Comment
  UC1131573  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen near Johnstonville; Susanville Quadrangle Comment
  UC1024816  Achnatherum lemmonii Leo Whitney 1935-6-19 3263 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD50709  Achnatherum lemmonii George A. Fischer; Irwin H. Johnson 1933-7-12 198 Lassen Grass Valley. 1696 Comment
  CAS-BOT-BC216849  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-7-31 50059 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  JEPS94534  Achnatherum occidentale subsp. californicum Vernon Oswald and Lowell Ahart 1997-6-24 8600 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10), along edge of the road); Diamond Mountain on Forest Road 29N43 1685 Comment
  UCD51042  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3296 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UCD51066  Achnatherum occidentale subsp. californicum Beecher Crampton 1960-6-18 5729 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UC1137654  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 218 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest 1722 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
  UCD51169  Achnatherum occidentale subsp. pubescens A. L. Hormay 1934-6-30 s.n. Lassen on Harvey Mountain, Lassen National Forest. 2133 Comment
  CAS-BOT-BC218008  Achnatherum thurberianum John Thomas Howell 1976-7-20 52005 Lassen About 5 miles W of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC42221  Achnatherum thurberianum C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. 2194 Comment
  RSA647558  Achnatherum thurberianum Marion P. Harthill 1972-6-17 832 Lassen Madeline. 1677 Comment
  SEINET235298 Image available Achnatherum thurberianum R. B. Turner 1980-5-18 Lassen Hwy 139 1 miles N of Susanville. 1463 Comment
  UCD51425  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. 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
  CAS-BOT-BC391608  Actaea rubra Louella Bass 1973-6-17 119 Lassen Elysian Valley 1325 Comment
  JEPS31589  Adonis aestivalis J. R. Sweeney 1962-7-5 2653 Lassen 1/2 mi n of Willow Creek Guard Station (16 mi n of Susanville, Modoc National Forest, on State Highway 139, 54 mi s of Adin); Modoc National Forest, State Highway 139 1219 Comment
  SEINET4339237  Aegilops triuncialis G. Schoolcraft 1997-6-26 2603 Lassen 1.2 mile north of Susanville, west of Highway 395 1326 Comment
  CHSC4853  Agastache parvifolia R. Carter 1967-7-13 584 Lassen On the s side of road to Eagle Lake Biology Station and Willow Creek. 1584 Comment
  JEPS126483  Agastache parvifolia Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -047 Lassen Directly off Horn Ranch Road. Follow Horn Ranch Road until you reach a fork with a sign. Follow road left then continue for about 3-5 miles. Comment
  UC1483882  Agastache parvifolia G. Schoolcraft 1979-9-3 193 Lassen on F.S. Road #16, 5-6 mi w Hwy 44 1950 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
  CHSC23525  Agastache urticifolia Wayne O. Baum 1971-7-14 71 -68 Lassen N slope of Gallatin Peak. 2011 Comment
  POM70458  Agastache urticifolia Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC1483811  Agastache urticifolia G. Schoolcraft 1979-7-5 122 Lassen n face Observatioin Peak; n face of Observation Peak 1828 Comment
  CAS-BOT-BC383105  Ageratina occidentalis Andrew Townesmith; Karen M. Meyer 2007-7-20 836 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  JEPS62630  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen w of Janesville; Sierra Nevada Comment
  CAS-BOT-BC30234  Ageratina occidentalis Hans Leschke 1961-8-18 1832 Lassen Summit area of Diamond Peak 2423 Comment
  HSC63943  Ageratina occidentalis Teresa Prendusi 1980-7-16 Lassen Willow Creek 1463 Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long Valley Comment
  UC468891  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3404 Lassen Chat Honey Lake Valley, Long Valley Comment
  SEINET10616047  Agoseris glauca Paul Gallian, David B. Dunn 1971-6-2 Gallian 520 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
  SEINET10925084  Agoseris glauca Paul Gallian, David B. Dunn 1971-6-2 Gallian 510 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
  CHSC64836  Agoseris glauca var. glauca Vernon H. Oswald 1995-6-26 6944 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
  UC1567420  Agoseris glauca var. glauca G. Schoolcraft 1989-6-6 1902 Lassen n end Secret Valley ((w of Hwy 395)) 1350 Comment
  UCD128649  Agoseris glauca var. glauca Grady L. Webster 1989-5-13 7704 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  CHSC7650  Agoseris glauca var. laciniata Beverley J. Wise 1969-4-29 9 Lassen 3.5 mi. from Susanville on the Round Valley road (turns off Hwy 139 approx. 1.4 mi. from Susanville). 1341 Comment
  JEPS107320  Agoseris heterophylla Lowell Ahart, John Dittes 2005-6-1 11885 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction 1438 Comment
  POM34510  Agoseris heterophylla Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  UC29359  Agoseris heterophylla var. heterophylla M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  UCD55280  Agoseris retrorsa Ellen Dean 2006-5-15 3095 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  CAS-BOT-BC127581  Agropyron cristatum John Thomas Howell 1961-9-25 36970 Lassen Sierra Nevada. East side of Beckwourth Pass. 1554 Comment
  CAS-BOT-BC127583  Agropyron cristatum John Thomas Howell 1974-7-8 50468 Lassen Sierra Nevada. Susanville. 1295 Comment
  SEINET3915762  Agropyron cristatum LeDoux, Dunn 1973-5-24 859 Lassen Collected at jct. of Hwy. 70&395 at Arco Station.; 0 Comment
  SEINET10509717  Agropyron desertorum Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 859 Lassen Collected at jct of hwy 70 & 395 at arco station. Comment
  SEINET10509726  Agropyron desertorum Billy Joe Cox 1971-6-2 Cox 3227 Lassen 5 mi s of milford near honey lake on us hwy 395; along roadside in grass, Jeffery pine on mts range to w at approximately the same altitude. 1250 Comment
  UCR152278  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  UC60210  Agrostis J. Burtt Davy Jun 17 1897-Jun 24 1897 3303 Lassen Honey Lake Valley Comment
  CAS-BOT-BC127238  Agrostis exarata Malcom A. Nobs; S. Galen Smith 1949-7-21 1057 Lassen 4 miles north of Madeline. Comment
  POM313172  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  RSA129621  Agrostis exarata H. S. Yates 1936-8-11 6067 Lassen Baxter Creek 1280 Comment
  RSA299277  Agrostis idahoensis J. T. Howell, Gordon H. True 1973-8-1 50232 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2134 Comment
  UC1024638  Agrostis pallens Leo Whitney 1934-7-10 2225 Lassen meadow near Harvey Spring (ca 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  UC1483834  Agrostis pallens G. Schoolcraft 1980-7-28 330 Lassen rocky meadow area e Tule Mountain (s of Blue Lake) 2042 Comment
  UCD53299  Agrostis scabra L. Whitney 1933-8-15 s.n. Lassen Meadow near Sheepshead. Comment
  UCSC000092  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Bogard Ranger Station - Lassen National Forest Comment
  UC188820  Agrostis variabilis Milo S. Baker July 1894 Lassen Comment
  SEINET14163171  Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 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
  GMDRC7739  Allium acuminatum J. M. Andre, G. Clifton 1993-6-1 33419 Lassen Modoc Plateau: along US Hwy 395 approx 11 mi. SE of Ravendale, just north of Tule Patch Spring, east of Snowstorm Mtn 1588 Comment
  POM110306  Allium acuminatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  JEPS94130  Allium anceps Vernon H. Oswald and Lowell Ahart 1998-5-22 9102 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
  SD6424  Allium anceps Mrs. R. M. Austin 1879-1 Lassen No further location information given on label. Comment
  CHSC99735  Allium bisceptrum var. bisceptrum Lowell Ahart; John Dittes 2008-6-20 14975 Lassen Upland on the northeast side of Big Valley, about 5.3 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 8.3 miles (air) northeast of Bieber. 1287 Comment
  CHSC69845  Allium lemmonii D. W. McNeal 1983-6-5 2840 Lassen Beside Eagle Lake Rd. (Lassen Co. Hwy. A-1) ) 0.5 mi. n. of Hwy. #36. Comment
  UC1609487  Allium lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-28 5587 Lassen e. of Poison Lake (Harvey Valley Rd. (33N02), 1.2 mi n. of Hwy. 44, e side of Grays Valley); Grays Valley 1731 Comment
  CAS-BOT-BC470923  Allium lemmonii B. Bartholomew; B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  HSC84126  Allium lemmonii Dale McNeal 1983-6-6 2846 Lassen Beside Hwy. 395, 4.5 mi. S of Modoc County line Comment
  POM110002  Allium platycaule Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  RSA367108  Allium platycaule Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
Read comments
Nov 17 2011
  RSA537548  Alnus incana Barbara Ertter 1988-7-25 7868 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  HSC63950  Alopecurus aequalis Teresa Prendusi 1980-7-9 1115 Lassen Horse Camp Spring, approximately 39 mi. N of spring 1707 Comment
  RSA129209  Alopecurus aequalis Alice Yates 1936-8-11 6068 Lassen Baxter Creek; Susanville 1280 Comment
  UC1594602  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  UCR80283  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen Route 36, 10 mi west of Chester Comment
  CDA43006  Alopecurus geniculatus L. Ahart, John Dittes 2008-6-2 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
Read comments
Oct 5 2019
  JEPS71146  Alopecurus geniculatus Brown and Wieslander 81 Lassen Comment
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley Comment
  UCD18957  Alopecurus geniculatus Raymond D. Ratliff 1965-7-22 20 Lassen Lassen National Forest, Harvey Valley Allot. (HV 78-73). 1706 Comment
  CHSC67189  Alyssum desertorum James D. Jokerst 1991-5-29 3317 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, E and adjacent to the highway +/- 200 m S of its junction with the road to the W across the N end of the Lake. 1584 Comment
  CHSC71228  Alyssum minus subsp. micranthum Vernon H. Oswald; Lowell Ahart 1998-6-4 9144 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. At the parking area at the end of the spur road. 1389 Comment
  JEPS94600  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1997-5-27 8496 Lassen on Forest Route 38N04 0.1 mi e Hwy. 139 ((between Hwy 139 near Willow Springs Guard Station and Coyote Flat), n of Susanville) 1546 Comment
  JEPS117361  Amaranthus blitoides Lowell Ahart, John Dittes 2010-8-30 17090 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  JEPS124370  Amaranthus californicus Lowell Ahart, John Dittes 2015-7-13 20317 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCD54542  Amaranthus californicus Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2727 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  CHSC71844  Amaranthus powellii Vernon Oswald; Lowell Ahart 1998-9-8 9570 Lassen Hwy 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  JEPS95710  Ambrosia acanthicarpa Vernon H. Oswald and L. Ahart 1995-8-14 7191 Lassen T33N R14E SW1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville 1645 Comment
  RSA132023  Ambrosia acanthicarpa Delzie Demaree 1959-8-18 41520 Lassen P.O. Termo. Comment
  HSC18512  Amelanchier alnifolia var. semiintegrifolia H. E. Parks, S. T. Parks 1928-6-16 261 Lassen Lassen National Park, Drakesbad 1677 Comment
  SEINET10685317  Amelanchier utahensis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 135 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  JEPS107822  Amphiscirpus nevadensis Lowell Ahart, John Dittes 2005-6-2 11975 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
  CHSC91309  Amsinckia menziesii Lowell Ahart; John Dittes 2005-6-1 11899 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
  CHSC99501  Amsinckia menziesii Lowell Ahart; John Dittes 2008-6-20 14909 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UCD119818  Amsinckia tessellata John Thomas Howell 1934-6-10 11842 Lassen Near Plumas Junction. Comment
  CHSC5040  Anaphalis L. B. Barlow 1967-7-4 95 Lassen 5 mi. south of Eagle Lake Biological Station on Gallatin Beach Road. 1737 Comment
  JEPS88217  Ancistrocarphus filagineus Vernon H. Oswald and Lowell Ahart 1996-6-17 7797 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off of Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  CHSC4828  Anemone oregana R . Carter 1967-7-14 601 Lassen On n side of rd. at the Silver Lake Camp Grounds on the n shore of Silver Lake. Comment
  CHSC23527  Antennaria argentea Wayne O. Baum 1971-7-12 71 -54 Lassen E. slope of Gallatin Peak. 1950 Comment
  CHSC91298  Antennaria dimorpha Lowell Ahart; John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC1137751  Antennaria dimorpha L. R. Short 1936-6-8 S- 386 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1743 Comment
  SEINET10854084  Antennaria dimorpha Billy Joe Cox 1971-6-2 Cox 2997 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC69138  Antennaria geyeri Milo S. Baker 1894-7-12 s.n. Lassen Pine Creek Comment
  RSA700232  Antennaria geyeri L. P. Janeway 2001-4-20 7206 Lassen HIGH CASCADE RANGE: 0.6 km east of road 111 and 1.3 km south of Road 35N60, about 11 km west of ittle Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  RSA713120  Antennaria geyeri L. P. Janeway, B. Castro 2005-7-10 8478 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01 1859 Comment
  RSA416688  Antennaria geyeri Christopher Davidson 1974-7-24 2487 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  SJSU7638  Antennaria geyeri J. W. Tilden 1960-6-27 1510 Lassen foot of Moonlight Road in outskirts Westwood 1524 Comment
  CDA10077  Antennaria luzuloides L. Ahart, J. 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. Comment
  HSC82198  Antennaria luzuloides Thomas W. Nelson, Jane P. Nelson 1980-7-6 6053 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS22839  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen 4 mi e Westwood Comment
  UC1523764  Antennaria luzuloides Gary Schoolcraft 1981-7-8 498 Lassen near Coulthurst Flat 1920 Comment
  UCD169450  Antennaria luzuloides Lowell Ahart; John Dittes 2005-6-1 11862 Lassen Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. About 1/2 mile west of Scott Road, on the east side of the poor dirt road. 1448 Comment
  CHSC68730  Antennaria luzuloides subsp. luzuloides Vernon H. Oswald; Lowell Ahart 1997-5-27 8506 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
  CAS-BOT-BC77284  Antennaria microphylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49414 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1523723  Antennaria rosea Gary Schoolcraft 1982-8-10 865 Lassen se of, along Hwy 139 Adin 1584 Comment
  UC1609102  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  UC1609112  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-14 5506 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  UCD128940  Antennaria rosea Beecher Crampton 1960-6-18 5712 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UC885063  Antirrhinum vexillocalyculatum subsp. breweri C. L. Hitchcock 1940-5-26 6597 a Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  CHSC6221  Apocynum androsaemifolium W. Vinyard 1946-6-17 Lassen Eagle Lake, summit of Mt. Fredonyer. 2349 Comment
  UC1137727  Apocynum androsaemifolium L. R. Short and D. Gish 1936-8-5 S- 492 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1783 Comment
  CHSC75442  Apocynum cannabinum Vernon H. Oswald; Lowell Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. 1356 Comment
  CAS-BOT-BC392211  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  CHSC52772  Aquilegia formosa George Deniso 1978-7-11 65 Lassen ca. .75 km E of Gallatin Beach, S end of Eagle L. 1584 Comment
  UC306926  Aquilegia formosa Marcus E. Jones 1897-6-28 Lassen Susanville, Perkin's Ranch Diamond Mt. 1828 Comment
  CHSC12461  Aquilegia formosa var. truncata Robert W. Severin 1969-6-25 15 Lassen West side of Murrer's Upper Meadow. 2 mi ESE E.L.B.S. 1584 Comment
  CHSC4814  Aquilegia formosa var. truncata R. Carter 1967-7-29 573 Lassen Found in Murrer's meadow, W side where canal runs. 1584 Comment
  UC773931  Arabis L. R. Short 1936-6-1 S- 354 Lassen Burgess Spring Experiment Range Lassen Forest 1859 Comment
  UC1126589  Arabis glabra A. Simontacchi 1940-7-3 916 Lassen 2.6 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1935 Comment
  SEINET10481537  Arabis puberula David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17764 Lassen Approx 12 mi s of adin on state hwy 139, in basalt and clay; along edge of rd on rolling knoll, in artemesia-juniper association. 1372 Comment
  POM316895  Arabis rectissima Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC1504479  Arabis rectissima var. rectissima Reed C. Rollins and Kathryn W. Rollins 1981-5-31 81172 Lassen 2.2 mi n CA Hwy 36 junction with County Hwy A-1 Comment
  NY119631  Arabis suffrutescens G. Schoolcraft 1983-6-29 1038 Lassen Coulthurst Flat area, 34-10-27 SW 1889.8 Comment
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  NY223210  Arctostaphylos patula P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1508.8 Comment
  UC1137730  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  UCD53307  Arctostaphylos patula Beecher Crampton 1964-1-26 7080 Lassen Ca. 35 miles NW of Susanville. 2042 Comment
  UC1136825  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 2223 Lassen Lassen Forest 1728 Comment
  CDA23999  Arenaria congesta var. crassula T. C. Fuller 1963-6-11 10661 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  UC1537301  Arenaria congesta var. suffrutescens Gordon H. True Jr. 1936-6-27 561 Lassen Top of Hot Spring Mountain Hot Spring Mountain 1981 Comment
  CHSC107316  Arnica chamissonis Lowell Ahart; John Dittes 2011-6-21 17534 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
  CHSC66713  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1996-8-1 8109 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  JEPS17745  Arnica chamissonis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5414 Lassen Mosquito Creek (along), in Corporation Meadow, s end of Warner Mts. Modoc National Forest, Warner Mts., Corporation Meadow, Mosq 2042 Comment
  JEPS97303  Arnica chamissonis Vernon H. Oswald and L. Ahart 1995-8-14 7186 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  SD113191  Arnica chamissonis Darley F. Howe 1964-8-2 3921 Lassen East Creek, Warner Mountains, Modoc National Forest 2010 Comment
  UC507003  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 194 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  CDA10117  Arnica cordifolia T. C. Fuller 1963-7-15 10896 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC108027  Arnica cordifolia var. cordifolia Lowell Ahart; John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC5221  Arnica dealbata 1944-7-26 Lassen Juniper Lake. 2055 Comment
  SEINET8734516 Image available Arnica foliosa var. incana A. L. Hormay 1941-1 8 Lassen Lassen; Sec. 31, T 33N, R. 9 E, Little Valley 1679 Comment
  CHSC66715  Arnica mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8123 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  JEPS35883  Arnica mollis Frances D. Payne 1929-7-12 99 Lassen Upper Silver Creek, se extremity of Warner Mts Warner Mountains, Upper Silver Creek 2499 Comment
  CAS-BOT-BC85004  Artemisia arbuscula subsp. arbuscula John Thomas Howell 1934-7-6 12455 Lassen Harvey Valley Comment
  CHSC72214  Artemisia arbuscula subsp. arbuscula Vernon H. Oswald 1998-9-14 9621 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  UC1137582  Artemisia arbuscula subsp. arbuscula A. Simontacchi 1940-9-16 947 Lassen 1.3 mi ne of Ebey Lake; Lassen National Forest, Halls Flat Quadrangle 1691 Comment
  CHSC118471  Artemisia arbuscula subsp. thermopola Don Leply 2016-7-31 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile northeast of railroad crossing on Highway 44. 40N31:46.7 x 121W01:35.9. 1743 Comment
  SBBG95821  Artemisia cana G. K. Helmkamp 1990-9-23 A- 5 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  UC1507398  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 194 Lassen Painter Flat 1722 Comment
  CAS-BOT-BC84832  Artemisia cana subsp. cana G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  UC1567427  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen w of Susanville (along BJ Trail at Hobo Camp.) 1310 Comment
  UC1776711  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfield and Bass Hill Roads 1322 Comment
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Aug 12 2019
  CHSC65291  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald; Lowell Ahart 1995-8-14 7196 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  UCD129340  Artemisia nova W. A. Williams 1951-8-6 s.n. Lassen Black's Mountain Range Experiement Station, (old Hell's Flat Ranger Station site). 25 miles south of Pittville. 1584 Comment
  UCD129363  Artemisia tridentata Beecher Crampton 1960-6-20 5736 Lassen Grass Valley, 4 miles southeast of Black's Mountain Experiment Station, USDA. 1676 Comment
  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
  JEPS37009  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7818 Lassen near South Fork Peak 1645 Comment
  SEINET3360477 Image available Artemisia tridentata subsp. tridentata A. A. Beetle 1957-8-16 12891 Lassen Between Ravendale and Termo. Comment
  SEINET3391559  Artemisia tridentata subsp. tridentata E. D. McArthur 1982-1 EDM- 1357 Lassen NW of Janesville. @ Jct of Co. Ros 205 & 219 Comment
  SEINET195654  Artemisia tridentata subsp. vaseyana G. Thomas Robbins 1945-10-7 2155 Lassen Lassen National Forest; Harvey Mountain, 2-3 miles northeast of burgess Spring, Harvey Valley 1676 Comment
  UCD137866  Asarum lemmonii Grady L. Webster 1989-5-13 7701 Lassen Butterfly Valley area. ca. 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  UC1136827  Asclepias speciosa George A. Fisher, Irwin H. Johnson 1933-7-29 F Lassen Stringer Lassen National Forest 1694 Comment
  JEPS124872 Image available Asclepias speciosa Lynne C. Carter 1967-7-11 81 Lassen 1.1 mi. South of Millford on Hwy 395. West of Honey Lake. Comment
  CDA5651  Asperugo procumbens Ancell May 1940 Lassen Susanville. 0 Comment
  CAS-BOT-BC99241  Aster G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  RSA18259  Aster breweri C. B. Wolf 1929-9-1 3783 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  RSA712643  Aster campestris L. P. Janeway 2005-7-31 8514 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
  CHSC66717  Aster elatus Vernon H. Oswald; Lowell Ahart 1996-8-1 8120 A Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  CHSC25906  Astragalus K. R. Stern 1967-7-1 2468 Lassen Roadside, Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC4429  Astragalus K. R. Stern 1967-6-30 2453 Lassen West Central side of Eagle Lake. 1554 Comment
  UCD105584  Astragalus Grady L. Webster 1989-5-13 7710 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC177433  Astragalus andersonii John Thomas Howell 1934-6-10 11875 Lassen Janesville Comment
  NY791370  Astragalus andersonii A. J. Cronquist 1959-6-16 8453 Lassen 25 miles northwest of Reno Comment
  NY791371  Astragalus andersonii D. B. Dunn 1971-6-2 17802 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402.1 Comment
  CHSC63394  Astragalus anxius V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6351 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  RSA614442  Astragalus anxius M. L. Carlson 1996-6-11 4202 Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET4856104  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley, ca. 25 km W of madeline, along Ash Valley Rd., on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sect. 5. 1550 Comment
  RSA362358  Astragalus argophyllus var. argophyllus A. Tiehm, Gary Schoolcraft 1986-5-12 10347 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
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Aug 12 2008
  CAS-BOT-BC178767  Astragalus canadensis var. brevidens Leo Whitney 1934-7-4 2073 Lassen Sand dunes near north shore of Eagle Lake, Lassen N.E. 158 Comment
  UC82577  Astragalus canadensis var. brevidens unknown 1892-6-20 Lassen Milford Comment
  UCD33606  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  RSA111039  Astragalus curvicarpus R. C. Barneby 1949-6-11 11 Lassen Secret Valley, 18 miles S of R(illegible) Comment
  SEINET12162068  Astragalus curvicarpus K. R. Stern 1974-1 5816 Lassen 16.5 mi W of Madeline, on Madeline-Adin Rd. Likely Quadrangle, sec. 32, R11E T35N 1548 Comment
  CAS-BOT-BC177845  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-16 8336 Lassen Near Susanville Comment
  NY803538  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch 1280 Comment
  CAS-BOT-BC177846  Astragalus curvicarpus var. curvicarpus Ella Dales Cantelow 1941-5-22 3657 Lassen 3 1/2 mi. s. of Secret Valley, C.C.C. Camp U.S. Hy 395 Susanville to Alturas Comment
  CDA26665  Astragalus filipes G. D. Barbe 1982-7-12 3873 Lassen East base of Dry Valley Ridge along Westside Road, 3 miles north of Dry Valley Gap (Thermo-Grasshopper Road), Madeline Plains. Comment
  CHSC7675  Astragalus filipes Beverley J. Wise 1969-5-3 52 Lassen 4.8 mi. east of Hwy 395 on Las. Co. Rd 338 (Smoke Creek road). 1615 Comment
  JEPS117260  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 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
  UC81430  Astragalus filipes T. S. Brandegee 1892-6-26 Lassen Milford Comment
  RSA339170  Astragalus filipes Margaret J. Williams 1983-7-31 339170 Lassen Ash Valley road, 17 mi. from Aden. 1829 Comment
  UC1128797  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley Sierraville Quad., Long Valley Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 Comment
  RSA38462  Astragalus gibbsii P. A. Munz 1947-5-20 11889 Lassen Milford 1265 Comment
  CAS-BOT-BC186915  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC186916  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 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
  POM23664  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CAS-BOT-BC186942  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west of Amedee 1219 Comment
  SEINET5324147  Astragalus iodanthus var. iodanthus A. Tiehm 1980-1 5755 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  CAS-BOT-BC229049  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  NY675574  Astragalus lentiginosus var. floribundus N. H. Holmgren 1980-7-5 9520 Lassen Upper Smoke Creek drainage, 20.4 km (12.7 miles) from U. S. Highway 395 via Rye Patch Canyon, 24 km (15 miles) airline distance southeast of Ravendale 1580 Comment
  NY675579  Astragalus lentiginosus var. floribundus A. Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile north of Wendel 1231 Comment
  SEINET5325521  Astragalus lentiginosus var. floribundus A. Tiehm 1980-1 5751 Lassen North end of Honey Lake Valley, 1 mile orth of Wendel. 1231 Comment
  JEPS114628  Astragalus lentiginosus var. lentiginosus Lowell Ahart, John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber 1268 Comment
  POM26417  Astragalus lentiginosus var. lentiginosus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  RSA754374  Astragalus lentiginosus var. lentiginosus Brian Knaus 2005-6-14 137 Lassen NE corner of Poison lake. ASLElE-12 1685 Comment
  CHSC67216  Astragalus lentiginosus var. platyphyllidius James D. Jokerst 1991-5-29 3310 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
  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
  RSA112071  Astragalus lentiginosus var. salinus H. D. Ripley, R. C. Barneby 1943-6-13 5678 Lassen N. of Doyle 1265 Comment
  CHSC7666  Astragalus malacus Beverley J. Wise 1969-5-3 55 Lassen 4.6 mi. east of junction of Hwy 395 on Las. Co. road 338 (Smoke Creek Road). 1554 Comment
  SD107330  Astragalus malacus Christopher Davidson 1975-6-7 2748 Lassen 1 mile east of Beckwourth Pass on Hwy 70, high steppe or rolling grassland, unfenced on south side of road, in dry channel at lower end of gentle slope 1524 Comment
  UC1128893  Astragalus obscurus A. Simontacchi 1940-5-17 748 Lassen 1.1 mi ssw Dixie Spring (Lassen National Forest); Halls Flat Quad., , ssw of Dixie Sprin Comment
  UC13451  Astragalus pulsiferae L. T. Stephenson Sept., 1897 Lassen Chat Comment
  CHSC98309  Astragalus pulsiferae var. coronensis R. Ondricek-Fallscheer 2003-6-7 210 Lassen About 27 air mi NE of Susanville, 9 air mi SSE of Ravendale, and 0.5 air mi NW of Rye Patch Springs; 0.5 mi E of Hwy 395 and 150 ft. N of road to Ramhorn Springs Campground. 1615 Comment
  NY621934  Astragalus pulsiferae var. coronensis S. L. Welsh 2001-6-14 28158 Lassen E of Hwy. 395, road to Rams Horn Spring campground 1539.2 Comment
  NY694120  Astragalus pulsiferae var. coronensis N. H. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  NY694121  Astragalus pulsiferae var. coronensis S. L. Welsh 2001-6-14 28150 Lassen East of Highway 395, road to Rams Horn Spring campground 1540 Comment
  NY694131  Astragalus pulsiferae var. pulsiferae A. A. Heller 1907-7-1 8674 Lassen Near Old Chat Comment
  RSA0006849  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 Comment
  SEINET5324574  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 -L-16 Lassen Burn area, W of Hwy 395 and Near Hwy 70. 1494 Comment
  CAS-BOT-BC194090  Astragalus purshii var. purshii H. D. Ripley; R. C. Barneby 1943-6-14 5741 Lassen West of Susanville 1310 Comment
  CAS-BOT-BC194099  Astragalus purshii var. purshii John Thomas Howell 1934-6-10 11876 Lassen Janesville Comment
  CAS-BOT-BC194095  Astragalus purshii var. purshii Clare B. Hardham 1978-4-20 21588 Lassen North west edge of Susanville Comment
  CAS-BOT-BC194096  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8345 Lassen Jonesville Comment
  JEPS114761  Astragalus purshii var. tinctus Lowell Ahart, John Dittes 2008-6-19 14888 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
  JEPS94605  Astragalus purshii var. tinctus Vernon H. Oswald and Lowell Ahart 1997-5-27 8517 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
  UC1128897  Astragalus whitneyi A. Simontacchi 1940-6-6 824 Lassen 9.3 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad. Comment
  UC82594  Astragalus whitneyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  SEINET10490007  Astragalus whitneyi var. confusus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17770 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
  JEPS108557  Astragalus whitneyi var. siskiyouensis L. P. Janeway 2005-7-4 8469 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41 1752 Comment
  JEPS120466  Atriplex canescens var. canescens L. P. Janeway, B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. Comment
  CAS-BOT-BC172657  Atriplex gardneri var. falcata Gary Schoolcraft 1983-6-20 1012 Lassen Mud Flat 1341 Comment
  UC1567451  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen Secret Valley w Hwy 395; Secret Valley 1347 Comment
  CHSC65305  Atriplex rosea Vernon H. Oswald; Lowell Ahart 1995-8-14 7174 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  RSA518558  Atriplex rosea George K. Helmkamp 1990-9-23 H- 7 Lassen N of Ravendale 1677 Comment
  RSA88586  Atriplex truncata J. T. Howell 1951-8-20 28226 Lassen Honey Lake Valley near Herlong 1280 Comment
  RSA122664B  Avena sativa A. Simontacchi 1940-6-13 854 Lassen 3.4 miles W.S.W. of Patterson Mtn.; Halls Flat 1738 Comment
  UCD129522  Balsamorhiza hirsuta G. Schoolcraft 2000-4-26 2891 Lassen Susanville, 1.8 miles west of Hwy 395 on Shaffer Mountain Road. 1554 Comment
  CAS-BOT-BC106496  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-13 9363 Lassen Between Susanville and Janesville Comment
  JEPS19803  Balsamorhiza hookeri Rimo Bacigalupi with S. Galen Smith 1957-6-28 6013 Lassen ne of Karlo, along U.S. Highway 395 Karlo (near headwaters of Secret Cr., n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  UC964788  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi west of Fredonyer Pass, Highway 36 Comment
  CAS-BOT-BC106490  Balsamorhiza hookeri Ella Dales Cantelow 1941-5-22 3550 Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville Hwy #36 Comment
  CAS-BOT-BC106495  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-12 9318 Lassen Fredonia Pass near Susaville Comment
  SEINET10617201  Balsamorhiza hookeri Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 476 Lassen Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  HSC100313  Balsamorhiza hookeri var. hirsuta Chris Boever, Ed Lutz and Wendi Lutz 2010-7-7 370102 Lassen On Co. Rd. 1, S from Cedarville, take gravel rd. 15 mi. to Tuledad Canyon Road. 1823 Comment
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May 1 2020
  CAS-BOT-BC100053  Balsamorhiza lanata B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6557 Lassen Just S of Ravendale 1580 Comment
  CHSC5200  Balsamorhiza sagittata 1944-7-9 Lassen Dow Butte. 2042 Comment
  UC1136968  Balsamorhiza sagittata L. R. Short and Wm. Gansberg 1936-6-16 S- 441 Lassen Burgess Spr. Exp. Range Lassen National Forest 1813 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
  JEPS124725 Image available Beckmannia eruciformis Virginia Hardham 1965-7-13 134 Lassen 1.4 mi. past junction As and 299 going west. Comment
  CHSC112801  Beckmannia syzigachne Lowell Ahart; John Dittes 2013-7-22 18843 Lassen West margin of a duck field, about 40 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121246  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18871 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA129087  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 miles E.S.E. of Susanville 1280 Comment
  SD52270  Beckmannia syzigachne F. Stephens 1894-8-11 11766 Lassen Comment
  UC37450  Beckmannia syzigachne J. Burtt Davy Jun 17 1897-Jun 24 1897 3315 Lassen Honey Lake Valley Comment
  NY833352  Berteroa incana A. Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles west of highway 395 on highway 70 then 5.5 road miles north on Scott Road 1494 Comment
  UC1191930  Berula erecta Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 a Lassen 1 mi s of Doyle (Long Creek); Long Creek Comment
  CHSC58833  Betula pumila var. glandulifera Vernon H. Oswald; Lowell Ahart 1992-7-16 5116 Lassen On Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  HSC95177  Bidens cernua Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 678 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC1342  Bistorta bistortoides L. Harmon 1946-6-23 Lassen Squaw Valley. Comment
  HSC17479  Bistorta bistortoides Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  CAS-BOT-BC127951  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CAS-BOT-BC127971  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CAS-BOT-BC128034  Blepharipappus scaber John Thomas Howell 1976-7-20 52032 Lassen In dried depression. about 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC128050  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3725 Lassen 5 mi. S. of Likely (Modoc Co.) 1402 Comment
  CHSC117222  Blepharipappus scaber Lowell Ahart; John Dittes 2016-6-7 20977 Lassen 20 yards west of the pond, along the road to the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC5201  Blepharipappus scaber 1944-7-1 Lassen Eagle Lake. 1584 Comment
  UC762497  Blepharipappus scaber R. F. Hoover 1940-9-28 4633 Lassen Susanville Comment
  UC894096  Blepharipappus scaber C. L. Hitchcock 1940-5-26 6612 Lassen ca 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  SEINET10912069  Blepharipappus scaber David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17767 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  UC1181375  Blepharipappus scaber R. W. Thorp and G. I. Stage 1960-6-11 60 -63 Lassen 6.5 mi north of Termo Comment
  UC1609118  Boechera Vernon H. Oswald and Lowell Ahart 1993-6-14 5546 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd (Lassen A1) at Sandy Beach on w shore of Eagle Lake, n side of rd); Eagle Lake 1566 Comment
  UC1126591  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad. 1737 Comment
  CAS-BOT-BC14514  Boechera puberula H. D. Ripley; R. C. Barneby 1944-3-30 5890 Lassen North of Madeline. 1706 Comment
  CHSC60730  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1993-6-14 5512 Lassen Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. Roadside. 1810 Comment
  CHSC99133  Boechera retrofracta Lowell Ahart; John Dittes 2008-6-19 14884 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
  JEPS118280  Boechera retrofracta Lowell Ahart, John Dittes 2011-6-20 17509 Lassen Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin 1511 Comment
  UC1553390  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 mi west of Madeline, CA. 1584 Comment
  CAS-BOT-BC25507  Boechera retrofracta Doris Kildale Gillespie 1930-5-14 9383 Lassen 5 miles west of Susanville. Comment
  CHSC71125  Boechera sparsiflora Vernon H. Oswald; Lowell Ahart 1998-5-22 9131 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
  CHSC99127  Boechera sparsiflora Lowell Ahart; John Dittes 2008-6-19 14885 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS94610  Boechera sparsiflora Vernon H. Oswald and Lowell Ahart 1997-5-27 8512 Lassen on Forest Route 38N04 1.4 mi e Hwy. 139 ((between Hwy 139 near Willow Springs Guard Station and Coyote Flat), n of Susanville) 1645 Comment
  CAS-BOT-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
  CAS-BOT-BC25864  Boechera subpinnatifida Doris Kildale Gillespie 1930-5-14 9382 Lassen Fredonia [Fredonyer] Pass near Susanville. Comment
  UC506904  Boechera suffrutescens George A. Fischer and Irwin H. Johnson 1933-7-14 F- 273 Lassen Lassen Forest 1722 Comment
  POM46125  Boisduvalia glabella Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC2118  Bolboschoenus fluviatilis J. Burtt Davy Jun 17 1897-Jun 24 1897 3313 Lassen Byers' Ranch Honey Lake Valley, Byers' Ranch Comment
  UC2046019  Bolboschoenus maritimus subsp. paludosus Nick Otting, Carex Working Group 2003-7-19 708 Lassen Modoc Plateau, Biscar Reservoir, 19 air miles northeast of Susanville. Comment
  UC1037276  Brickellia grandiflora Leo Whitney 1934-7-25 1758 Lassen ca. 15 mi w of, Eagle Lake; Lassen National Forest, Crater Mountain 2225 Comment
  CAS-BOT-BC149498  Bromus briziformis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile west of Karls. Comment
  JEPS26570  Bromus briziformis Lauramay T. Dempster 1961-6-17 1675 Lassen about 8 mi n of Karlo Road junction with Hwy 395, w of highway Karlo Road 1584 Comment
  CAS-BOT-BC149584  Bromus carinatus var. carinatus John Thomas Howell 1973-7-10 49778 Lassen Sierra Nevada. Fredonyer Pass. 1737 Comment
  UC1130972  Bromus carinatus var. carinatus H. P. Hagge 1929-8-12 29 Lassen Logan Mountain 1828 Comment
  UC506924  Bromus carinatus var. carinatus George A. Fischer, Irwin H. Johnson 1933-7-14 F 251 Lassen Lassen National Forest 1767 Comment
  UC53631  Bromus carinatus var. carinatus M. S. Baker and Frank Nutting 1894-7-5 Lassen s of Dixie Valley Comment
  UCD59099  Bromus carinatus var. marginatus R. Tofsrud 1947-7-1 224 Lassen Between Ravendale and Thermo. Comment
  CAS-BOT-BC155938  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  JEPS95805  Bromus commutatus Vernon H. Oswald and L. Ahart 1999-6-9 9750 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  UCD58446  Bromus commutatus A. A. Beetle 1941-6-28 2809 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  UCD58457  Bromus commutatus A. A. Beetle 1941-6-28 2810 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  UCD58463  Bromus commutatus L. D. Whitney 1935-6-23 s.n. Lassen Fruit Growers Supply Co., Camp #10. Comment
  CHSC64901  Bromus japonicus Vernon H. Oswald; Lowell Ahart 1995-6-19 6874 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  JEPS103200  Bromus japonicus G. Schoolcraft 1995-6-6 2492 Lassen Antelope Spring N of Skedaddle Mountains 1524 Comment
  CAS-BOT-BC162181  Bromus orcuttianus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49472 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC161656  Bromus secalinus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1615 Comment
  UC53747  Bromus secalinus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  CHSC106583  Bromus tectorum Zachary Garcia 2008-4-8 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC13497  Bromus tectorum J. Pitts 1972-6-22 244 Lassen 50 yds. n of Eagle Lake Biology Station. Comment
  CHSC36476  Bromus tectorum Margaret E. Halloran 1982-6-6 13 Lassen N of Eagle Lake Field Station on a point directly e of Pelican Pt. Comment
  UC604684  Bromus tectorum Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  CHSC68744  Callitriche hermaphroditica Vernon H. Oswald; Lowell Ahart 1997-5-27 8514 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
  JEPS124785 Image available Callitriche palustris M. L. Wheelis 1964-7-1 136 Lassen Loc. bridges between Bieber and New Bieber. Comment
  POM312337  Callitriche verna Verne Grant, H. L. Mason 1947-7-9 13294 Lassen 5 miles E of Bieber. Comment
  RSA233787  Callitriche verna R. F. Thorne, C. W. Tilforth 1969-9-5 39133 Lassen Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139. 1433 Comment
  CAS-BOT-BC487967  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen In the valley east of Fredonyer Pass, Comment
  RSA166662  Calochortus leichtlinii H. Dearing, M. Dearing 1938-7-1 2237 Lassen Top of pass west of Susanville 1763 Comment
  UC1537211  Calochortus macrocarpus Gordon H. True Jr. 1936-6-26 542 Lassen near Litchfield (w slope of Rice Canyon); Rice Canyon 1463 Comment
  CAS-BOT-BC483437  Calochortus macrocarpus Amy Rhinehart 1895-6-1 s.n. Lassen Unspecified Comment
  HSC22969  Calochortus macrocarpus var. macrocarpus John Pratt 1970-6-4 62 Lassen Susanville Comment
  UCD105297  Caltha leptosepala K. M. Meyer; A. Townesmith 2007-7-21 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A 21. 1920 Comment
  CHSC36458  Calyptridium monospermum Susan H. Euing 1982-6-5 12 Lassen Base of northeast slope, Gallatin Peak, approx. 1000 ft. from summit. Comment
  UC1523751  Calyptridium umbellatum G. Schoolcraft 1981-5-5 374 Lassen Ash Valley 1548 Comment
  UC699726  Calyptridium umbellatum Farris Farris 1936-6-15 Lassen Eagle Lake road 1676 Comment
  UC1537347  Calyptridium umbellatum Gordon H. True Jr. 1936-6-25 534 Lassen Hall's Valley 1524 Comment
  SEINET230279  Calystegia polymorpha Noel H. Holmgren, Patricia K. Holmgren 1980-7-9 9581 Lassen Surprise Valley 23.7 km south of Fort Bidwell 1400 Comment
  SEINET3992160  Camassia quamash A. A. Heller 1938-5-4 15140 Lassen 2 mi E of Westwood; Transition Life Zone 1494 Comment
  CHSC99737  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2008-6-20 14905 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC843733  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 mi s of Westwood 1524 Comment
  POM253049  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles south of Westwood 1524 Comment
  CHSC93245  Camelina microcarpa John Dittes; Scott Chamberlain 2004-6-28 1019 Lassen Modoc Plateau; Long Valley; ca. 4.4 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.6 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; near road. 1465 Comment
  HSC69078  Camissonia boothii subsp. alyssoides Gary Schoolcraft 1980-5-16 234 Lassen N of Kiln on Wendel Hwy. 1280 Comment
  NY851231  Camissonia claviformis var. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale, on Highway 395 Comment
  RSA294815  Camissonia minor Arnold Tiehm 1980-5-29 5752 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  NY852081  Camissonia tanacetifolia N. H. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  NY852070  Camissonia tanacetifolia A. R. Kruckeberg 1954-6-22 3322 Lassen 6 miles south of Likely on Highway 395 Comment
  RSA0011501  Camissonia tanacetifolia Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46978 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  SEINET10492095  Camissonia tanacetifolia David B. Dunn, Paul Gallian 1971-6-2 Dunn 493 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc; juniper artemesia. 1646 Comment
  CAS-BOT-BC160833  Camissonia tanacetifolia subsp. quadriperforata James Jokerst 1983-5-31 1787 Lassen Near Madeline Plains 1583 Comment
  POM38369  Camissonia tanacetifolia subsp. quadriperforata F. H. Hillman 1897-7-12 s.n. Lassen Chat. Comment
  CAS-BOT-BC160863  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-7-8 12505 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC160878  Camissonia tanacetifolia subsp. tanacetifolia Lassen 1927 G. S. Crew 1927-6-25 38 Lassen Lassen National Forest. Norval Flat 1747 Comment
  CAS-BOT-BC160861  Camissonia tanacetifolia subsp. tanacetifolia Raymond Nelson 1962-8-25 s.n. Lassen Lassen Volcanic National Park. On the east shore of Snag Lake Comment
  CAS-BOT-BC160872  Camissonia tanacetifolia subsp. tanacetifolia Loran C. Anderson; Kent Fish 1965-8-17 2951 Lassen Along hiway 44, in undisturbed sites of Hog Flat. 24 air miles northwest of Susanville 1676 Comment
  RSA186587  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  CAS-BOT-BC37035  Capsella bursa-pastoris Louella Bass 1973-4-13 12 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UC1924258  Capsella bursa-pastoris Debra Valov 2004-5-31 2004229 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD114153  Capsella bursa-pastoris L. R. Short; J. Warren 1936-6-9 S- 408 Lassen Burgess Spring Experimental Range; around old sheep bed-grounds. 1844 Comment
  JEPS95978  Cardaria chalepensis Vernon H. Oswald and L. Ahart 1999-6-9 9749 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  CDA3650  Cardaria draba G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2801 Lassen 7.2 miles (11.6 km) north of Termo, 7.1 miles south of Madeline, east side of Madeline Plain. Comment
  CAS-BOT-BC18287  Carex John Thomas Howell; Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road, south of Susanville. 1584 Comment
  CHSC112417  Carex Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18770 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC18285  Carex John Thomas Howell 1975-7-23 51408 Lassen Sierra Nevada. Along Highway 395 between Johnstonville and Janesville. 1280 Comment
  JEPS28338  Carex angustata George W. Gillett 1957-7-22 883 Lassen campsite near s end of lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  UC190429  Carex angustata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  SEINET7549702 Image available Carex angustata George W. Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake. 1850 Comment
  SEINET13327167  Carex aquatilis var. aquatilis J. Atchley 1993-5-5 1 Lassen Along willow creek. 1219 Comment
  CHSC89754  Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC506936  Carex athrostachya George A. Fischer, Irwin H. Johnson 1933-7-12 F 237 Lassen Patterson flat 1737 Comment
  CDA33021  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen Adjacent to boat ramp, campground on the east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. 0 Comment
  UC1108041  Carex brainerdii E. B. Copeland 1932-8-15 Lassen below Raker Peak (woods by Lost Creek); Mount Lassen, Lost Creek 1889 Comment
  HSC95169  Carex cusickii Gordon Leppig 1998-7-12 952 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC76791  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  UC1748339  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen NW corner of Upper Stephens Meadow (Upper Pine Creek near Stephens Camp); High Cascade Range 1900 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
  RSA298354  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen About 2 miles north of Westwood. Comment
  UC1776677  Carex douglasii G. Schoolcraft 1995-5-22 2486 Lassen East of Skedaddle Ranch 1554 Comment
  UC1924574  Carex douglasii Debra Valov 2006-5-29 2006025 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1279 Comment
  UC506939  Carex douglasii George A. Fischer, Irwin H. Johnson 1933-7-12 F 234 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  CAS-BOT-BC19780  Carex douglasii H. D. Ripley; R. C. Barneby 1943-6-14 5145 Lassen Hidden Valley, E of Susanville. 1584 Comment
  CAS-BOT-BC20166  Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  JEPS94473  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1997-5-27 8510 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling road on the north); Forest Route 38N04 1560 Comment
  UC1133496  Carex filifolia var. erostrata A. Simontacchi 1940-5-17 729 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC22274  Carex hassei Ralph K. Gierisch 1968-7-12 3360 Lassen Hwy. 36 at Goodrich Creek. 1554 Comment
  SEINET7587572 Image available Carex heteroneura George W. Gillett 1957-7-21 865 Lassen Lassen Volcanic National Park, Juniper Lake, Cameron Meadow trail, north of trail summit. 2118 Comment
  CHSC114410  Carex infirminervia Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. 6.5 or so air miles south of Susanville, in alder patch below the second aspen stand in an ephemeral drainage corridor upslope from the end of Road 29N07A. 1719 Comment
  CAS-BOT-BC35780  Carex jonesii J. T. Howell 1934-6-14 12165 Lassen Warner Mts.; near Lost Lake 2438 Comment
  UC1609199  Carex livida Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen e Silver Lake (just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
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May 19 2014
  SEINET7568445 Image available Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen Coble Mountain 7.5' Quad. High Cascade Range, 0.6 km east of Road 111 and 1.3 km south of Road 35N60, about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC1583950  Carex multicaulis G. Schoolcraft 1990-5-15 2049 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  CAS-BOT-BC32177  Carex multicostata Beecher Crampton 1964-6-26 7076 Lassen Ca 4 mi SSE Bogard Ranger Station, Lassen National Forest. 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
  UC1142949  Carex nebrascensis A. L. Hormay 1941-6-18 7 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC1536798  Carex nebrascensis Gordon H. True Jr. 1939-6-15 995 Lassen near Grasshopper Valley; Bullard Lake Comment
  UC2031885  Carex nebrascensis Nick Otting 2003-7-16 688 Lassen Modoc Plateau, Smoke Creek, 1200 feet downstream of Rye Patch Road crossing, 15 air miles southeast of Ravendale. Comment
  CAS-BOT-BC119715  Carex nervina Clare B. Hardham 1961-6-17 7508 Lassen Baxter Creek south of Susanville. Comment
  CAS-BOT-BC119716  Carex nervina John Thomas Howell 1976-7-19 51989 Lassen On Gold Run Creek SW of Susanville. 1386 Comment
  CAS-BOT-BC119044  Carex pellita Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1828 Comment
  CHSC75552  Carex pellita Vernon H. Oswald; Lowell Ahart 1999-6-9 9738 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395. 1353 Comment
  JEPS128406  Carex pellita Catherine Bauer with Ellen Bauer Benson 2017-8-16 14 Lassen South of Highway 44, North of Butte Lake, between Butte Creek and access road into Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC2031883  Carex pellita Nick Otting 2003-7-16 691 Lassen Modoc Plateau, Smoke Creek, 14 air miles southeast of Ravendale. Comment
  UC1133448  Carex petasata Robert W. Gardner 1939-6-28 G- 32 Lassen Burgess Spring Experimental Range, Halls Flat Quadrangle Burgess Spring Experimental Range Comment
  SEINET10817202  Carex phaeocephala Willard W. Eggleston 1927-7-11 Eggleston 21474 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  CAS-BOT-BC118401  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen Dry drainageway of Rush Creek, N of Smoke Creek Ranch Road, 2 km W of the stateline, Comment
  CHSC77249  Carex praegracilis G. Schoolcraft 1997-7-30 2625 Lassen W slope of Diamond Mtn. 1889 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 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-BC118739  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49471 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC118025  Carex rossii Peter H. Raven; Otto Thomas Solbrig 1958-6-16 13245 Lassen 5.7 mi W of Westwood on St Hwy 36. 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-BC118029  Carex rossii John Thomas Howell; Gordon H. True 1959-9-23 s.n. Lassen N end of Juniper Lake, Lassen Park. 2057 Comment
  CHSC110302  Carex simulata L. P. Janeway; B. Castro 2012-7-2 10930 Lassen Modoc Plateau. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1600 Comment
  HSC95305  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 514 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS122357  Carex simulata Joseph Broberg, Jaycee Leonard 2012-7-25 CA 320 -115 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left onto Cold Springs road. Collection is at Dodge Springs Comment
  SEINET6171441  Carex simulata CLM Team 2014-7-29 NV 030 -984 Lassen From Reno head north on 395, turn right onto Red Rock Rd. and proceed roughly 0.5-0.75 of a mile and park at dirt pull off on the right side of the road 1381 Comment
  CAS-BOT-BC116625  Carex subfusca Alice Eastwood; John Thomas Howell 1940-6-15 8304 Lassen Willow Creek near Hayden Hill. 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
  POM81203  Carex subfusca Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 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
  SEINET4170122  Carex subfusca Unknown 1966-6-24 Lassen Above Blue Lake, Warner Mountains, ca. 18 mi airline mi S. E. of Likely 1905 Comment
  JEPS28336  Carex utriculata George W. Gillett 1957-7-22 885 Lassen near campsite at s end of lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  HSC103651  Carex utriculata Thomas W. Nelson, Jane Nelson 1985-8-10 8009 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC114881  Carex whitneyi John Thomas Howell 1959-9-23 s.n. Lassen North end of Juniper Lake, Lassen Park. 2057 Comment
  HSC48217  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19237 Lassen 2 mi. N of Westwood Comment
  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
  CHSC75539  Castilleja angustifolia Vernon H. Oswald; Lowell Ahart 1999-6-9 9746 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. Comment
  CHSC93559  Castilleja angustifolia Lowell Ahart; John Dittes 2005-6-2 11978 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the interesection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
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Oct 20 2009
  UC1368787  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen about 6 mi n Honey Lake 1280 Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC249618  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-20 44 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  CHSC7750  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-4 105 Lassen 4 mi. north of Susanville on Hwy 139 (Antelope Grade). 1371 Comment
  CHSC7751  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-3 106 Lassen 28.4 mi. N.E. of Susanville. 1554 Comment
  UC1136983  Castilleja applegatei subsp. pinetorum L. R. Short and J. Warren 1936-6-5 S- 378 Lassen Burgess Spring Experiment Range; Lassen Forest 1792 Comment
  JEPS17631  Castilleja arachnoidea Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5409 Lassen 4.4 mi s Patterson Ranger Station (on e edge of Long Valley Meadow, s tip of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS28820  Castilleja arachnoidea Frances Payne 1929-7-12 83 Lassen between Camp 1 and Lost Lake (s end of Warner Range, e slope); Warner Range 2286 Comment
  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
  RSA428370B  Castilleja arachnoidea Christopher Davidson 1974-7-25 2500 Lassen Lassen Volcanic nat. Park, at Juniper Lake. 2134 Comment
  UC1484795  Castilleja campestris subsp. campestris Noel H. Holmgren and Patricia K. Holmgren 1978-6-10 8903 Lassen 9 mi ene Termo (and 8 air distance); Madeline Plains, Coyote Flat 1630 Comment
  UCR244105  Castilleja chromosa Jim Andre, G. L. Clifton 1993-6-9 19696 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CHSC4764  Castilleja lacera R. Carter 1967-7-16 623 Lassen Along side road. Comment
  UC1924561  Castilleja lacera Debra Valov 2006-5-29 2006033 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  OBI75870  Castilleja lemmonii Anthony Baniaga 2011-8-10 495 Lassen Lassen Natl Forest. Barnes Flat. Swain Mtn quad. T30N R8E sec 9 SE of SE 1769 Comment
  JEPS79327  Castilleja linariifolia T. C. Fuller 1980-8-5 20313 Lassen 7.4 km se Dodge Reservoir campground (along e side of Tuledad Road, on the e shore of Dodge Reservoir, ne of Ravendale) Comment
  UC26450  Castilleja linariifolia Milo S. Baker 1894-7-25 Lassen Eagle Lake 1524 Comment
  CAS-BOT-BC244892  Castilleja miniata John Thomas Howell 1934-7-10 12559 Lassen Black's Mt. Comment
  POM44364  Castilleja miniata Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SEINET14062605  Castilleja miniata C. G. Gulling 1905-1 1568 Lassen Big Meadows. Comment
  CAS-BOT-BC241000  Castilleja pilosa Michael A. Vincent 1999-6-9 8584 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield 1524 Comment
  CAS-BOT-BC241005  Castilleja pilosa Margaret Williams; Lyn Wise 1976-5-31 76- 22 -1 Lassen Near Nervine Aero Service, E of Beckwourth 1524 Comment
  CHSC60771  Castilleja pilosa Vernn H. Oswald; Lowell Ahart 1993-6-14 5525 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
  CHSC99144  Castilleja pilosa Lowell Ahart; John Dittes 2008-6-19 14879 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
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  UC1483790  Castilleja pilosa Mary Meyer 1980-7-1 Lassen Champs Flat 1677 Comment
  CHSC112415  Castilleja tenuis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18773 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC113090  Castilleja tenuis Lowell Ahart; John Dittes 2013-7-22 18840 Lassen West margin of a duck field, about 30 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA0037002  Castilleja tenuis Lowell A. Ahart, John Dittes 2008-6-19 14874 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
  UC1143036  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen National Forest 1743 Comment
  UC1609289  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1993-6-28 5576 Lassen 0.2 mi n Highway 44 (Harvey Valley Rd. (33N02), e side of Grays Valley, e of Poison Lake); Grays Valley 1749 Comment
  UC27205  Castilleja tenuis J. Burtt Davy Jun 17 1897-Jun 24 1897 3359 Lassen Adobe meadows; Honey Lake Valley Comment
  UC1477726  Caulanthus major var. nevadensis Gary Schoolcraft 1979-7-10 140 Lassen e of summit Observation Peak; e of summit Observation Peak 2392 Comment
  POM85246  Ceanothus cordulatus Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  SEINET196483  Ceanothus cordulatus C. B. Heisser 1947-7-13 s.n. Lassen Near Westwood Comment
  UC1553382  Ceanothus cordulatus G. Schoolcraft 1988-7-11 1823 Lassen ca 5 mi n Hwy 36 (along Hwy 44) 1676 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
  CAS-BOT-BC52047  Ceanothus prostratus A. M. Vollmer; L. Beane 1953-7-1 88 Lassen Along Halls Flat Road, beinning 6 miles West of Susanville to McArthur 1554 Comment
  CAS-BOT-BC52052  Ceanothus prostratus Milo S. Baker 1894-7-30 s.n. Lassen Near Silver Lake Comment
  RSA122353  Ceanothus prostratus C. B. Bradshaw 1939-5-27 233 Lassen S end Black Mt. EF Plot 39-1, s15. 1753 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
  HSC30197  Ceanothus prostratus var. laxus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19257 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC52439  Ceanothus velutinus var. velutinus Jeanne Janish; Carl Janish 1938-9-4 s.n. Lassen above upper Twin Lake, Lassen National Park 2042 Comment
  SEINET10690337  Ceanothus velutinus var. velutinus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC277000  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  CDA37979  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen Secret Valley, Highway 395, 3.3 miles north of road to Karlo. 0 Comment
  RSA157739  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Hwy. 395 to Madelaine, 1.6 miles north of Termo Comment
  CDA36156  Centaurea maculosa CDFA Staff Jul 1998 Lassen Susanville. 0 Comment
  RSA121127  Centaurea repens E. Sawyer 1935-6-27 239 Lassen 5 miles NNE of Beckwith Pass Comment
  UC1042560  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 Lassen Cramer Ranch Big Valley Comment
  RSA186838  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville Comment
  CHSC23520  Cercocarpus ledifolius var. ledifolius Wayne O. Baum 1971-6-28 71 -47 Lassen E. slope of Gallatin Peak. 2103 Comment
  UC1136909  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  UC452575  Cercocarpus ledifolius var. ledifolius Mrs. R. M. Austin 1879-1 Lassen Comment
  JEPS112814  Chaenactis douglasii Dean W. Taylor 1974-6-14 3723 Lassen Plumas National Forest; Janesville Grade Road, at summit ca. 4 mi SSW of Janesville 1706 Comment
  CAS-BOT-BC276614  Chaenactis douglasii var. douglasii Louella Bass 1978-7-11 78 -10 Lassen Elysian Valley 1325 Comment
  CHSC31977  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart; J. T. Howell 1974-7-9 532 Lassen Along edge of rd, 4 mi w of Susanville. 1584 Comment
  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
  JEPS97305  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and L. Ahart 1995-8-14 7178 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  UC1609091  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and Lowell Ahart 1993-7-8 5660 Lassen 1.9 mi n Hwy 44 (Pittville Rd., on se edge of lake, between the rr and the lake); Poison Lake 1709 Comment
  SEINET9445226  Chamaesyce serpyllifolia M. J. Williams 1974-7-29 74 -L-47 Lassen S of Hwy 70, 2 miles W of Hallelujah Junction. 1494 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  UC1481746  Cheilanthes Milo S. Baker 1894-7-5 2 a Lassen Dixie Mts Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  UC1871947  Cheilanthes intertexta Donald E. Lepley 2006-6-18 Lassen Southeast of Dixie Valley, about 2.5 air miles west of Pat Morris Spring. Take County Road 404 southeast from Pittville area to Little Valley, then Road 35N05 (USFS 22) about 15 miles at Black Hole and junction with Road 35N06; follow the latter about one mile just nto Lassen National Forest land and walk north about 50 yards to low escarpment. Comment
  CHSC112973  Chenopodium album Lowell Ahart; John Dittes 2013-7-22 18859 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
  POM103115  Chenopodium atrovirens Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  UC1191324  Chenopodium chenopodioides Verne Grant and Irving Schneider 1947-9-5 8368 Lassen by Sam Webb's place (Spaulding) (nw shore of lake); Eagle Lake Comment
  UC1949076  Chenopodium desiccatum Barbara Ertter 1988-7-25 7871 Lassen ridge of Diamond Mts. ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville; spur on N-face. Comment
  UC1483860  Chimaphila menziesii G. Schoolcraft 1980-7-15 311 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  UC1483847  Chimaphila umbellata G. Schoolcraft 1980-7-29 343 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CAS-BOT-BC247863  Chorizanthe watsonii Clare B. Hardham 1961-6-17 7499 Lassen Baxter Cr. south of Susanville 1524 Comment
  JEPS57772  Chorizanthe watsonii W. L. Jepson 1918-8-2 7766 Lassen Beckwith Pass 1463 Comment
  UC1135264  Chrysolepis sempervirens A. Simontacchi 1940-6-15 881 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 2164 Comment
  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
  CAS-BOT-BC140657  Chrysothamnus humilis Clare B. Hardham 1971-8-22 18391 Lassen Diamond Mountain 2346 Comment
  CHSC78477  Chrysothamnus humilis Beth Corbin 2000-7-24 979 Lassen Northeast of Poison Lake, just east of the Pittville Highway. 1705 Comment
  UC1137593  Chrysothamnus humilis L. R. Short and J. Warren 1936-8-17 S- 495 Lassen Burgess Spr. Exp. Range Lassen Forest 1760 Comment
  UCR67461  Chrysothamnus nauseosus George K. Helmkamp 1990-9-23 D- 10 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CDA10774  Chrysothamnus nauseosus subsp. albicaulis M. R. Pryor 1953-9-22 Lassen Stacey. 0 Comment
  RSA3149  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles form Wendel on road to Jonesville 1220 Comment
  CAS-BOT-BC100756  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 2872 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  HSC5341  Chrysothamnus viscidiflorus subsp. viscidiflorus M. T. Milligan 1964-8-6 196 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC747217  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Thomas Robbins 1945-10-7 2154 Lassen 2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  UC761819  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-9-29 4644 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  RSA252470  Chrysothamnus viscidiflorus var. lanceolatus R. F. Thorne, C. W. Tilforth 1969-9-6 39267 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC162755  Chylismia claviformis subsp. cruciformis A. A. Heller 1938-6-23 15211 Lassen On an extensive flat north of Balls Canyon on U.S. Highway #395 Comment
  JEPS29747  Chylismia claviformis subsp. cruciformis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8502 Lassen 2 mi e Wendel junction (on road past Flanagan to Pyramid Lake, Nevada, in low areas n of Honey Lake) 1219 Comment
  SD61012  Cirsium andersonii Darley F. Howe 1964-8-1 3911 Lassen 3.3 miles on ridge road above Harvey Creek, Warner Mountains; Modoc National Forest. 1950 Comment
  CAS-BOT-BC277918  Cirsium canescens T. C. Fuller 1966-7-22 14981 Lassen E. of rd. at e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  JEPS30611  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  CDA1257  Cirsium inamoenum T. C. Fuller 1959-7-7 2739 Lassen Rocky hillside by Hwy 395, 6 mi N/ road to Karlo. Comment
  CDA1258  Cirsium inamoenum J. R. Keck Jr., D. L. Haws 1980-7-22 PDR# 330194 Lassen Ravendale, BLM rangeland. Comment
  CDA1260  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 -B Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. Comment
  CDA1262  Cirsium inamoenum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20380 Lassen West side of Smoke Creek Reservoir; drainage on east side of road above lake. Comment
  RSA186826  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  RSA186832  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC280437  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14200 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CDA1520  Cirsium ochrocentrum var. 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
  CDA1522  Cirsium ochrocentrum var. ochrocentrum Lee Wheeler, T. C. Fuller 1518-58 1958-11-12 s.n. Lassen Honey Lake M. Mallery (Mallory) ranch, Susanville. (4 mi SE of Susanville). 0 Comment
  CDA1523  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen Honey Lake; M.A. Mallory prop. Richmond Rd., about 4 mi. SE of Susanville. 0 Comment
  CAS-BOT-BC286304  Cirsium scariosum Alice Eastwood; John Thomas Howell 1940-6-11 7961 Lassen Eastern Fall River Valley Comment
  CDA21727  Cirsium undulatum Lee Wheeler 1965-9-21 Lassen Pitt River Ranch, first road going north west of Bailey Creek, first old vacant ranch on left side of road, 18 miles west of Termo. 0 Comment
  CHSC4876  Clarkia lassenensis R. Carter 1967-6-23 546 Lassen Growing 10 yds. off S side of road. Comment
  CHSC91195  Clarkia lassenensis Lowell Ahart; John Dittes 2005-6-2 11951 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction. 1512 Comment
  UCR244103  Clarkia lassenensis Jim Andre, G. L. Clifton 1993-6-9 19699 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
  CHSC4775  Clarkia rhomboidea R. Carter 1967-6-27 564 Lassen Ca. 10 yds off S side of Rd. Comment
  JEPS123454  Clarkia rhomboidea Wilson Collison, Jaileen Merced 2015-7-13 CA 320 -139 Lassen 2014 Bald Fire, West Beaver Creek. Comment
  CHSC36439  Clarkia stellata Dave Leuck 1981-6-16 20 Lassen Subway Cave on Hwy 44. Comment
  CHSC83619  Clarkia stellata L. P. Janeway 2001-6-28 7233 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  JEPS94123  Claytonia rubra subsp. depressa Vernon H. Oswald and Lowell Ahart 1998-5-22 9124 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  NY222830  Cleome platycarpa G. H. True Jr. 1937-6-27 792 Lassen Near Skeedaddle. 1524.0 Comment
  NY242101  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi. N. Wendel Rd. along Skedaddle Ranch Rd. 1463.0 Comment
  RSA657118  Cleomella hillmanii G. L. Clifton 1995-5-24 34202 Lassen About 3/4 miles north of Calneva Lake. 1220 Comment
  UC1567444  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi n Wendel Rd. (along Skedaddle Ranch Rd) 1463 Comment
  CAS-BOT-BC423225  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  CAS-BOT-BC423226  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341 Comment
  CHSC64779  Cleomella plocasperma Vernon H. Oswald 1995-6-7 6834 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. On a flat dominated by greasewood and saltgrass near the railroad. 1231 Comment
  NY242228  Cleomella plocasperma A. Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 Comment
  NY242362  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  UC1533121  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen about 1 mi w CA-NV stateline (along Smoke Creek Road) 1341 Comment
  RSA93741B  Cleomella plocasperma Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 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
  CHSC36478  Collinsia parviflora Margaret E. Halloran 1982-6-6 11 Lassen Pine Creek jst below fish trap where Pine Creek empties into Eagle Lake. Comment
  JEPS11714  Collinsia parviflora F. W. Pennell 1940-6-9 25752 Lassen 7 mi n Madeline (along Rte 395) 1615 Comment
  RSA0059629  Collinsia parviflora Lowell Ahart, John Dittes 2011-6-20 17487 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  SBBG66419  Collinsia parviflora S. W. Hutchinson -Jun-1925 Lassen Eagle Lake 1554 Comment
  CHSC30572  Collomia grandiflora Sori H. Shad 1970-7-1 33 Lassen Found 3/4 mile past Murrer's. Meadow near edge of road. 1524 Comment
  SEINET2445656  Collomia grandiflora E. E. McKee, Westover 1918-6-12 s.n. Lassen Susanville, Calif.; 0 Comment
  JEPS17747  Collomia linearis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5407 Lassen 4.4 mi s Patterson Ranger Sta.; southern end of Warner Mountains, Modoc National Forest, Lon 2057 Comment
  CHSC60835  Collomia tinctoria Vernon H. Oswald; Lowell Ahart 1993-6-28 5597 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, between Grays Valley and Harvey Valley, E of Poison Lake. Along the edge of the road. 1734 Comment
  UC1123658  Collomia tinctoria A. Simontacchi 1940-5-28 778 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC179604  Comandra umbellata subsp. pallida G. Schoolcraft 1989-6-7 1908 Lassen NW slope of Shaffer Mtn. near top 2011 Comment
  SEINET11242313  Conringia orientalis N. H. Holmgren, P. K. Holmgren 1980-1 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 miles) W of Hwy 395, from a turnoff 10.3 km (6.4 miles) S of Madeline. 1620 Comment
  HSC23535  Convolvulus arvensis L. G. Bennett 1967-7-17 180 Lassen Murrers Meadow, near Eagle Lake 1494 Comment
  CAS-BOT-BC286113  Conyza canadensis John Thomas Howell 1974-7-10 50532 Lassen Elysian Valley 1325 Comment
  UC26324  Cordylanthus maritimus subsp. canescens J. Burtt Davy Jun 17 1897-Jun 24 1897 3396 Lassen Amedee Honey Lake Valley Comment
  JEPS11645  Cordylanthus ramosus R. F. Hoover 1940-10-1 4655 Lassen Jonesville Comment
  POM43084  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CAS-BOT-BC212207  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  NY500130  Corydalis aurea subsp. aurea N. H. Holmgren 1980-7-4 9516 Lassen Observation Peak, near top of Mountain, 17 km (10.5 miles) airline distance east of Ravendale 2420 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
  CHSC29884  Crepis bakeri Robin L. Ondricek 1978-7-15 98 Lassen On the ne and nw sides of Lower Dry Lake in the area where the trees begin. 1645 Comment
  OBI75880  Crepis bakeri Anthony Baniaga 2011-6-30 404 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1470 Comment
  SEINET10474584  Crepis bakeri subsp. cusickii Mary Susan Taylor 1982-5-29 Taylor 4562 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  POM230909  Crepis intermedia G. Ledyard Stebbins, J. A. Jenkins 1937-7-10 2317 Lassen Black Mountain about a mile below the summit. 1951 Comment
  CAS-BOT-BC291548  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-7 2203 Lassen Susanville just west of the town on Inspiratin Point Comment
  CAS-BOT-BC291584  Crepis modocensis subsp. subacaulis G. L. Stebbins; J. A. Jenkins 1937-7-10 2278 Lassen Slope of Diamond Mt. 2286 Comment
  UC581297  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-7 2196 Lassen Inspiration Point Susanville (just w of town) Comment
  UC581304  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2352 Lassen sw-facing slope of mts. along hwy from McArthur to Bieber; Big Valley Mts. 1100 Comment
  UC506906  Crepis occidentalis subsp. conjuncta George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 Comment
  CAS-BOT-BC290752  Crepis occidentalis subsp. occidentalis John Thomas Howell 1934-6-10 11872 Lassen Janesville Comment
  CAS-BOT-BC376564  Crepis occidentalis subsp. occidentalis M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  CHSC118853  Crepis occidentalis subsp. occidentalis L. P. Janeway; B. Castro 2015-6-5 11775 Lassen Greast Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 13.0 road-km south of the junction at the west end of Tuledad Canyon; 6.8 road-km north of Stage Road (which is in the eastern corner of Madeline Plains); west side of a northeasten branch of Red Rock Creek. 1695 Comment
  CHSC76103  Crypsis schoenoides Lowell Ahart; Vernon H. Oswald 1999-9-13 8216 Lassen In a field, about 150 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
  UCD59992  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  CHSC23441  Cryptantha K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5840 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  CHSC5053  Cryptantha L. B. Barlow 1967-6-23 15 Lassen 1/4 mi. north Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  SDSU20524  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 524 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  UCD119054  Cryptantha ambigua Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  CHSC5014  Cryptantha circumscissa L. G. Bennett 1967-7-5 111 Lassen Immediate vicinity of Eagle Lake Biological Station, Eagle Lake. 1554 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
  HSC63772  Cryptantha flavoculata Teresa Prendusi 1980-5-22 1125 Lassen Shaffer Mtn. near top 2012 Comment
  UC78602  Cryptantha pterocarya T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC77202  Cryptantha torreyana G. Schoolcraft 1997-8-6 2653 Lassen S side of Gold Run Rd. 1889 Comment
  POM197158  Cryptogramma acrostichoides Anonymous 1881-07 s.n. Lassen Mount Lassen Comment
  UC1587038  Cynoglossum occidentale G. Schoolcraft 1991-7-30 2192 Lassen Bear <Sring> on n. side of widow Mt. 1780 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
  JEPS28326  Cyperus squarrosus George W. Gillett 1957-9-4 1125 Lassen e. margin of lower lake Widow Lake (near inlet); Lassen Volcanic Nat'l Park 2072 Comment
  CAS-BOT-BC114056  Cyperus squarrosus George Wilson Gillett 1957-9-4 1125 Lassen Widow Lake. East margin of lower lake, near inlet in drying mud. 2072 Comment
  SEINET6627868  Cystopteris fragilis M. J. Williams 1970-7-4 s.n. Lassen Ash Creek, SE of Adin 1280 Comment
  CAS-BOT-BC208395  Dalea ornata Gary Schoolcraft 1984-6-28 1280 Lassen NW of Shaffer Mtn., on the tablelands 1402 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
  SEINET3895836 Image available Damasonium californicum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line.; 0 1698 Comment
  UC1483795  Damasonium californicum G. Schoolcraft 1979-6-26 98 Lassen Buckthorn Lake n.w. of Pyramid Lake 1889 Comment
  UC527  Damasonium californicum J. Burtt Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  SEINET3828852  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
  HSC68921  Danthonia californica Gary Schoolcraft 1980-7-28 329 Lassen E of Tule Mountain and S of Blue Lake. 2043 Comment
  UC1024914  Danthonia californica Leo Whitney 1935-6-25 3368 Lassen near Camp 10 <of?> Fruit Grower's Supply Company; Lassen National Forest Comment
  CHSC66281  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1996-6-24 7839 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  UCD61007  Danthonia californica var. americana L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  JEPS88200  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1996-6-17 7803 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UC1024799  Danthonia unispicata Leo Whitney 1935-6-24 3298 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  CHSC4983  Delphinium andersonii R. Clicquennoi 1967-6-24 38 Lassen Meadow. 4 mi e of Eagle Lake Biology Station at Murrer's Upper Meadow. 1524 Comment
  CHSC93658  Delphinium andersonii Lowell Ahart; John Dittes 2005-6-2 11995 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
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  RSA0005299  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CDA24233  Delphinium depauperatum T. C. Fuller 1963-6-1 10636 Lassen Road east to Willow Springs Campground, 1.9 miles east of Pittville-Susanville Road, 11.2 road miles south of Pittville. 0 Comment
  CAS-BOT-BC116051  Delphinium nuttallianum Albert Michael Vollmer; L. Beane 1953-7-1 63 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 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
  CAS-BOT-BC194265  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen Snag Lake, margin of gravel bars 100 yards above lake near south shore - Lassen Volcanic National Park 1850 Comment
  CAS-BOT-BC194266  Deschampsia cespitosa subsp. cespitosa M. S. Baker; F. Nutting 1894-7-21 s.n. Lassen Eagle Lake 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
  CAS-BOT-BC192745  Deschampsia danthonioides Malcom A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  HSC9591  Deschampsia danthonioides D. E. Anderson 1969-7-5 4994 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  UC1131557  Deschampsia danthonioides A. Simontacchi 1940-6-4 813 Lassen 14.8 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UCD62833  Deschampsia danthonioides Malcolm A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles N of Madeline. Comment
  CAS-BOT-BC192746  Deschampsia danthonioides Clarence R. Quick 1962-6-17 62 25 A Lassen Swains Hole, a manmade pond in sagebrush flat south of Blacks Experimental Station 1554 Comment
  CAS-BOT-BC201809  Deschampsia elongata Malcom A. Nobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  JEPS28059  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Widow Lake 2072 Comment
  CAS-BOT-BC42987  Descurainia incisa subsp. incisa A. M. Vollmer; L. Beane 1953-7-1 13 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur. 1554 Comment
  SEINET10480969  Descurainia pinnata Jeffrey Huber 1971-6-2 Huber 134 Lassen 6 mi n of halleluja jct on u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  CHSC99284  Descurainia sophia Lowell Ahart; John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1126908  Descurainia sophia A. Simontacchi 1940-6-8 828 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CAS-BOT-BC500986  Dichelostemma multiflorum H. D. Ripley; R. C. Barneby 1943-6-14 5750 Lassen West of Susanville 1310 Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  CHSC45007  Dieteria canescens var. shastensis Lowell Ahart; John Thomas Howell 1974-7-9 539 Lassen Near the south edge of Eagle Lake. 1584 Comment
  CHSC60820  Dieteria canescens var. shastensis Vernon H. Oswald; Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, between Grays Valley and Harvey Valley, E of Poison Lake. 1734 Comment
  UC86850  Dieteria canescens var. shastensis Wm. M. Canby 1897-9-1 138 Lassen Mt. Shasta Comment
  CAS-BOT-BC153674  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8673 Lassen Near Old Chat Comment
  CHSC25121  Diplacus mephiticus William R. Lessig 1967-6-24 6 Lassen Collected ca. 200 yds. N. E. of Eagle Lake Biological Station. 1524 Comment
  CHSC67069  Diplacus mephiticus Willis Ball 1969-6-19 10 Lassen Found in old dry Eagle Lake basin about 1/2 mile N.E. of E.L.B.S. 1554 Comment
  CHSC71133  Diplacus mephiticus Vernon H. Oswald; Lowell Ahart 1998-5-22 9118 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  SBBG66659  Diplacus mephiticus S. W. Hutchinson -Jun-1925 Lassen near Eagle Lake Comment
  CAS-BOT-BC151429  Diplacus nanus John Thomas Howell 1962-6-19 37887 Lassen 3 mi. s. of Hallelujah Junction - Sierra Nevada 1524 Comment
  CAS-BOT-BC151433  Diplacus nanus D. B. Dunn; B. J. Cox 1971-6-2 17798 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 1402 Comment
  CDA31694  Distichlis spicata T. C. Fuller 1959-7-7 4733 Lassen Hwy 395 just east of Standish. 0 Comment
  CDA31696  Distichlis spicata E. E. Fix, Agric. Comm. Sep 1951 Lassen 0 Comment
  CHSC115787  Distichlis spicata Lowell Ahart; John Dittes 2015-7-14 20333 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  HSC9639  Distichlis spicata M. T. Milligan 1964-8-6 199 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  SBBG115909  Distichlis spicata J. T. Howell 1973-7-10 49764 Lassen near Westwood 1554 Comment
  SACT001016  Distichlis spicata var. stricta Verne Grant, Irving Schneider 1947-9-5 Lassen Rhizomatous, northwest shore of Eagle Lake Comment
  CHSC4945  Dodecatheon alpinum R. Carter 1967-6-23 549 Lassen 25 yds w of dam in Murrer's Meadow. Along rd to Murrer's Meadow. 1584 Comment
  HSC95203  Dodecatheon alpinum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-28 507 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC773868  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  RSA59710  Dodecatheon conjugens E. K. Balls 1950-5-18 14766 Lassen Above Ash Creek Public Camp., off rd. from Adin to Madeline. 1616 Comment
  CHSC113007  Downingia bacigalupii Lowell Ahart; John Dittes 2013-7-22 18875 Lassen Around a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC12415  Downingia bacigalupii Anne Linda Brisk 1969-6-26 30 Lassen Growing in Papoose Meadow, 13.5 mi SW of ELBS. 1658 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
  CAS-BOT-BC492927  Downingia bacigalupii Louis K. Mann; M. Pat Mann 1963-6-18 s.n. Lassen On State Hwy 139 from Susanville to Adin, 42 mi N of Susanville. Comment
  RSA113687  Downingia bacigalupii H. K. Sharsmith 1955-6-27 4512 Lassen Adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1220 Comment
  CHSC23491  Downingia bicornuta K. R. Stern 1974-6-26 5855 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  CHSC59527  Downingia bicornuta Mary Meyer 1980-7-9 506 Lassen Horse Camp Springs, down-stream in cow pod. 1706 Comment
  JEPS114876  Downingia bicornuta var. bicornuta Lowell Ahart, John Dittes 2008-6-20 14945 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
  UC157670  Downingia bicornuta var. bicornuta Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UC157671  Downingia bicornuta var. bicornuta Milo S. Baker Lassen near Eagle Lake Comment
  UC1609203  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen 1.9 mi n Highway 44 (Pittville Rd (Lassen 111, 36N01), se edge of Poison Lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  SEINET8733890 Image available Downingia elegans Helen K. Sharsmith 1955-1 4512 Lassen adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1219 Comment
  JEPS106977  Downingia insignis Lisa Schultheis 1995-6-27 226 -95 Lassen East side of 395, 1.6 miles south of Ravendale Comment
  CAS-BOT-BC266475  Downingia laeta G. Schoolcraft 1999-6-29 2850 Lassen E edge of Madeline Plains about 9 miles NE of Ravendale 1615 Comment
  CAS-BOT-BC266476  Downingia laeta Philip A. Munz 1947-5-20 11892 Lassen Milford 1264 Comment
  UCD149942  Downingia laeta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC41370  Draba verna M. S. Taylor 1982-5-7 4428 Lassen Reno Junction on Highway 70 just east of Beckwourth Pass. 1524 Comment
  JEPS94137  Draba verna Vernon H. Oswald and Lowell Ahart 1998-5-22 9128 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts., 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  CAS-BOT-BC157796  Drymocallis lactea var. lactea John Thomas Howell 1934-6-14 12156 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC159342  Drymocallis lactea var. lactea Louella Bass 1973-6-14 106 Lassen Elysian Valley - Sierra Nevada 1325 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
  CHSC76099  Elaeagnus angustifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8223 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3-1/2 miles (air) southeast of Standish. 1210 Comment
  JEPS123974  Elatine Lowell Ahart, John Dittes 2015-7-13 20295 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC107341  Elatine californica Lowell Ahart; John Dittes 2011-6-21 17527 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC29940  Elatine rubella Robin L. Ondricek 1978-7-5 93 Lassen At the edge of Mahogany Lake at the ne end. 2057 Comment
  JEPS28332  Eleocharis acicularis George W. Gillett 1957-7-28 933 Lassen Widow Lake Lassen Volcanic National Park (shore) 2072 Comment
  UC1609483  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1993-6-28 5599 Lassen NE of Poison Lake (Rd 35N04 at Aspen Well, N of Hwy 44 on NW edge of Harvey Valley) 1725 Comment
  CHSC60450  Eleocharis macrostachya Mary Ann Showers 1992-6-13 2555 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  SEINET7586406 Image available Eleocharis montevidensis Unknown 1969-9-6 39258 Lassen Along Long Valley Creek, c 14 mi SE of Milford. 1311 Comment
  UCD54550  Eleocharis parvula Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2734 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
Read comments
Oct 5 2010
  HSC95296  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UCD62904  Elymus X saundersii Lester J. Berry 1960-7-8 Lassen Burgess Springs Road, floor of Harvey Valley, ca. 7 miles S of Black's Mtn. Exper. Station, USDA. Comment
  SEINET10521751  Elymus cinereus var. pubens Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 888 Lassen 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  SEINET10521752  Elymus cinereus var. pubens Billy Joe Cox 1971-6-2 Cox 3232 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus- Jeffery Pine on mountain range to west at approx. same alt. 1250 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-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  CAS-BOT-BC227493  Elymus elymoides John Thomas Howell 1934-6-10 11866 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  SEINET12745640  Elymus elymoides J. B. Davy 1897-1 D Lassen Honey Lake Valley, Long Valley. Comment
  UCD61485  Elymus elymoides Beecher Crampton 1954-7-6 2075 Lassen Along US Hwy 395, 15 miles south of Ravendale. 1676 Comment
  UCD61624  Elymus elymoides A. A. Beetle 1941-6-28 2804 Lassen 10 miles W of Chester, rte 36. Comment
  CHSC7687  Elymus elymoides subsp. elymoides Beverley J. Wise 1969-5-23 136 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  UC1133007  Elymus elymoides subsp. elymoides H. P. Hagge 1929-9-11 23 Lassen Logan Mtn. Lassen National Forest, Eagle Lake Quadrangle Comment
  UC1537224  Elymus elymoides subsp. elymoides Gordon H. True Jr. 1937-7-10 786 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1524 Comment
  JEPS126495  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-6-28 CA 350 -72 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
  UCD62312  Elymus glaucus A. A. Beetle 1941-6-28 2803 Lassen 10 miles W of Chester, rte 36. Comment
  CAS-BOT-BC234094  Elymus multisetus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49447 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  UCD62571  Elymus repens Beecher Crampton 1954-7-5 2059 Lassen Hwy 36, 4.5 miles west of Susanville. Comment
  SEINET5642835  Elymus spicatus Fred W. Hoffman 1946-6-8 1822 Lassen Lava beds east of Karlo, CA.; 0 Comment
  UC1024684  Elymus trachycaulus Leo Whitney 1933-8-3 2161 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1136823  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  CHSC114411  Elymus trachycaulus subsp. trachycaulus Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, in landing at end of Road 28N52A. 2133 Comment
  HSC8755  Elymus trachycaulus subsp. trachycaulus M. T. Milligan 1964-8-6 205 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CHSC32865  Ephedra viridis J. S. White 1980-4-14 124 Lassen 3 mi ne of Wendel. 1371 Comment
  CHSC71123  Ephedra viridis Vernon H. Oswald; Lowell Ahart 1998-5-22 9103 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  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
  JEPS117496  Epilobium brachycarpum Lowell Ahart, John Dittes 2010-7-31 17005 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  SEINET12541858  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC507002  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  UCR67373  Epilobium brachycarpum George K. Helmkamp 1990-9-23 E- 17 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  RSA0011500  Epilobium brachycarpum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46975 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC118849  Epilobium campestre L. P. Janeway 2015-8-9 11821 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01 - the road to Patterson Campground); 0.7 air-km west of Long Valley, 5.3 air-km northeast of Blue Lake. 2179 Comment
  JEPS119650  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. Comment
  JEPS127267  Epilobium campestre Lowell Ahart, John Dittes 2016-7-13 21128 Lassen 60 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
  CHSC29945  Epilobium ciliatum subsp. ciliatum Robin L. Ondricek 1978-8-6 115 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  HSC95335  Epilobium ciliatum subsp. ciliatum Gordon Leppig 1998-8-17 1054 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC68920  Epilobium ciliatum subsp. glandulosum Gary Schoolcraft 1980-7-16 315 Lassen Near Nelson Corral Reservoir 1805 Comment
  RSA0105579  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  NY1000301  Epilobium glaberrimum var. fastigiatum C. B. Hardham 1969-8-28 17438 Lassen Granitic slope west of Janesville Comment
  HSC26606  Epilobium hallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19179 Lassen Harvey Valley near Cone Springs Comment
  UC1924229  Epilobium hallianum Debra Valov 2005-8-19 2005218 Lassen Eagle Lake; Hwy 139, Mi. marker 25 1554 Comment
  UC1609446  Epilobium pallidum Vernon H. Oswald and Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd (33N18) 1.4 mi ssw Pittville Rd (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, bed of vernal pool on e side of rd) 1694 Comment
  CHSC96704  Epilobium palustre Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 538 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  RSA508633  Epipactis gigantea Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  CAS-BOT-BC57303  Equisetum laevigatum John Thomas Howell; Gordon H. True 1973-8-1 50235 Lassen Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville 2133 Comment
  CAS-BOT-BC57306  Equisetum laevigatum M. S. Taylor 1982-5-29 4566 Lassen the jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno Comment
  CHSC30622  Equisetum laevigatum John Steiner 1975-6-23 5 Lassen Upper Murrer's Meadow. 1536 Comment
  CHSC66369  Equisetum laevigatum Vernon H. Oswald; Lowell Ahart 1996-6-17 7820 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  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
  CHSC76105  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8229 Lassen Along the north side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  JEPS94837  Eragrostis pectinacea var. pectinacea Vernon H. Oswald and Lowell Ahart 1998-9-8 9578 Lassen Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber; , Highway 299 1255 Comment
  CAS-BOT-BC174121  Eremogone 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
  CHSC4879  Eremogone congesta R. Carter 1967-6-23 544 Lassen Growing ca. 5 yds. off N side road. Comment
  JEPS124510 Image available Eremogone congesta Lynne C. Carter 1967-7-11 87 Lassen Willow Creek Campground, Modoc Natl. Forest, about 300 ft. up the ridge North of Ranger Station. Comment
  CHSC91525  Eremogone congesta var. congesta L. P. Janeway 2005-7-3 8457 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CHSC111269  Eremogone congesta var. subcongesta L. P. Janeway 2012-7-3 10941 Lassen Modoc Plateau. Near top of Shaffer Mountain, rocky outcrops, west-northwest facing and very rocky with lots of outcrops of hard dark volcanic rock. 2032 Comment
  RSA0057704  Eremogone congesta var. subcongesta Barbara Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  CHSC91922  Eremogone congesta var. suffrutescens L. P. Janeway; B. Castro 2005-7-10 8476 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  SEINET12875577 Image available Eremogone congesta var. suffrutescens George W. Gillett 1957-1 945 Lassen Along trail between Butte Lake and Snag Lake. 1859 Comment
  UCD150407  Eremothera boothii subsp. alyssoides William Anderson 1963-6-2 s.n. Lassen Wendel. Comment
  CHSC100870  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  CHSC5079  Eriastrum signatum A. W. Harvilik 1967-6-30 35 Lassen Collected near junction of rd. 5.19 and rd to Murrer's Meadow. 1524 Comment
  CHSC6201  Eriastrum signatum M. West 1946-7-2 Lassen Spalding's, Eagle Lake. 1554 Comment
  SEINET14592139  Eriastrum signatum R. R. Halse 2004-7-21 6669 Lassen At junction of US Hwy 395 and State Road A 26, ca 11 miles SE of Milford. 1274 Comment
  UC23552  Eriastrum signatum M. S. Baker and Frank Nutting 1894-7-25 Lassen Eagle Lake 1524 Comment
  UC572262  Eriastrum signatum E. Sawyer 1935-6-29 222 Lassen LOng Valley Sierraville Quadrangle 1310 Comment
  CAS-BOT-BC515171  Eriastrum signatum Lewis S. Rose 1934-7-25 34410 Lassen Reno Jct. 1371 Comment
  JEPS124585 Image available Eriastrum sparsiflorum Dixie Funnell 1965-7-12 127 Lassen 2.6 miles north of MIlford. Comment
  JEPS69071  Eriastrum wilcoxii W. L. Jepson 1918-8-2 7792 Lassen Long Valley 1219 Comment
Read comments
Nov 7 2008
  UC23553  Eriastrum wilcoxii M. S. Baker and Frank Nutting 1892-7-2 Lassen s side Dixey Mts. Comment
  CAS-BOT-BC286605  Ericameria bloomeri M. S. Taylor; B. Hammond 1982-8-27 5054 Lassen Crystal Peak area, Diamond Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC286606  Ericameria bloomeri E. K. Balls; P. C. Everett 1952-10-9 18134 Lassen About Plumas-Lassen county line, Hwy 89, east of Lake Almanor 1219 Comment
  RSA747338  Ericameria bloomeri K. M. Meyer, A. Townesmith 2007-7-23 155 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC298170  Ericameria nauseosa var. oreophila Gary Schoolcraft 1984-9-26 1380 Lassen Painter Flat 1706 Comment
  CAS-BOT-BC298175  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel on the road to Janesville 1219 Comment
  CAS-BOT-BC298176  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298179  Ericameria nauseosa var. oreophila John Thomas Howell 1924-8-13 s.n. Lassen Near Doyle Comment
  JEPS21524  Ericameria nauseosa var. oreophila W. L. Jepson 1918-8-4 7808 Lassen Horse Lake 1554 Comment
  UCD54569  Ericameria nauseosa var. oreophila Ellen Dean; Dawn Cunningham 2005-10-25 2752 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  CAS-BOT-BC293010  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 1/2 mile from Janesville on the road to Wendel - Western edge of Honey Lake Valley 1280 Comment
  UC1776655  Ericameria parryi var. nevadensis G. Schoolcraft 1998-8-19 2803 Lassen N upper slope of Shaffer Mountain 1981 Comment
  CHSC93247  Erigeron aphanactis var. aphanactis John Dittes; Scott Chamberlain 2004-6-28 1008 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  SEINET8082921 Image available Erigeron bloomeri S. Jesselson, M. Gray 2015-5-28 NV 030 -1065 Lassen Plumas allotment: Hwy 395 into CA, first meian crossing after check station, turn right, follow road right (S), take 2nd left, follow uphill road bearing SE until reach gray metal gate. 1727 Comment
  SEINET8513002 Image available Erigeron bloomeri A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-5-28 s.n. Lassen Costantia Allotment. West of Peterson's 1490 Comment
  UCD131273  Erigeron bloomeri Beecher Crampton 1960-6-18 5723 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 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-BC294485  Erigeron bloomeri var. bloomeri John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50676 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CAS-BOT-BC294489  Erigeron bloomeri var. bloomeri Ralph K. Gierisch 1968-7-11 3343 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC4947  Erigeron bloomeri var. bloomeri R. Carter 1967-6-23 545 Lassen Growing 10 yds off s side rd. Comment
  CHSC67463  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of rodge N of drainage. 1584 Comment
  CHSC68733  Erigeron bloomeri var. bloomeri Vernon H. Oswald; Lowell Ahart 1997-5-27 8486 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
  UC1136835  Erigeron bloomeri var. bloomeri L. R. Short and J. Warren 1936-6-23 S- 451 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1741 Comment
  UC1368785  Erigeron bloomeri var. bloomeri John L. Strother 1970-5-23 952 Lassen about 6 mi n Honey Lake 1280 Comment
  UC1536892  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-25 531 Lassen Harvey Ranger Station Harvey Valley 1706 Comment
  CAS-BOT-BC294486  Erigeron bloomeri var. bloomeri Clarence R. Quick 1964-7-29 64 -90 Lassen Blacks Mt. Experimental Forest 1798 Comment
  UC1553393  Erigeron chrysopsidis var. austiniae G. Schoolcraft 1988-6-7 1811 Lassen about 14 air mi ne Ravendale 1737 Comment
  UC584273  Erigeron compositus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2286 Lassen s of Janesville (summit Thompson Peak); Thompson Peak 2346 Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline Comment
  CAS-BOT-BC297146  Erigeron concinnus var. concinnus John Thomas Howell 1934-7-6 12439 Lassen Harvey Valley Comment
  CAS-BOT-BC296847  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-16 8340 Lassen Janesville Comment
  JEPS88241  Erigeron divergens Vernon H. Oswald and Lowell Ahart 1996-6-17 7808 Lassen gravel bar on edge of river e Devils Corral Trailhead (Bizz Johnson Trail) (w of 6.0 milepost, trailhead located off of Hwy 36, ca. 7 mi w of Susanville); Modoc Plateau, Susan River 1402 Comment
  UC1561865  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca .75 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  UC1583973  Erigeron divergens G. Schoolcraft 1990-7-11 2107 Lassen on e slopes Tule Mtn. 1767 Comment
  RSA78916  Erigeron divergens E. K. Balls, Percy C. Everett 1952-10-10 18144 Lassen 8 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UC1776657  Erigeron eatonii var. nevadincola G. Schoolcraft 1998-6-30 2743 Lassen N slope of Ft. Sage Mountains 1950 Comment
  CHSC27599  Erigeron eatonii var. plantagineus Cindy Prouty 1978-7-5 12 Lassen East shore of Mahogany Lake, S of Eagle Lake. 2060 Comment
  UC1136837  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  UC1609303  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5515 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd. (Lassen A1) 0.5 mi sw Spaulding Tract Rd. (Rd. 518, 33N89)) 1810 Comment
  CHSC64838  Erigeron elegantulus Vernon H. Oswald 1995-6-26 6945 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
  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
  JEPS114760  Erigeron elegantulus Lowell Ahart, John Dittes 2008-6-19 14866 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
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 Comment
  UCR244069  Erigeron filifolius var. filifolius Jim Andre, G. L. Clifton 1993-6-9 19695 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC295182  Erigeron inornatus John Thomas Howell 1974-7-10 50561 Lassen Elysian Valley 1325 Comment
  CHSC65089  Erigeron inornatus var. calidipetris Vernon H. Oswald; Lowell Ahart 1995-7-24 7146 Lassen Cascade Range. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. Edge of the road. 1905 Comment
  CHSC88611  Erigeron inornatus var. calidipetris Linnea Hanson 1998-8-11 378 Lassen Lassen National Forest. Off Hwy. A21 north of Westwood. 1524 Comment
  JEPS109853  Erigeron inornatus var. calidipetris Dean W. Taylor 2006-6-29 19558 Lassen vicinity Long Lake; Highway 44 at the junction of County Road A21, southwest quadrant, near the junction with Forest Road 31N89 1737 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
  SFV10992  Erigeron lassenianus var. deficiens J. Turner, F. M. Ball 1962-7-13 1193 Lassen Laufman Public Camp, 3 miles off Highway 395 from Milford near Honey Lake. 1494 Comment
  CAS-BOT-BC295470  Erigeron lassenianus var. lassenianus Clarence R. Quick 1961-6-21 61 -21 Lassen Adjacent to Road 21, Blacks Mt. Experimental Forest northeast of Lassen Peak 1798 Comment
  CHSC112190  Erigeron linearis Dean Wm. Taylor 2012-6-7 21231 Lassen Modoc Plateau. Grasshopper Valley; Grasshopper Valley Road 2.3 miles E of junction with Highway 139. 1635 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
  RSA0049610  Erigeron linearis Dean Wm. Taylor 2012-6-7 21231 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  UC206218  Erigeron linearis Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  CHSC20347  Erigeron philadelphicus Mary E. Meyer 1973-7-7 17 Lassen Upper Murrer's Meadow. 1572 Comment
  POM32998  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CHSC99137  Erigeron pumilus subsp. intermedius Lowell Ahart; John Dittes 2008-6-19 14867 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
  CHSC71222  Erigeron pumilus var. intermedius Vernon H. Oswald; Lowell Ahart 1998-6-4 9139 Lassen Red Rock Rd at its junction with Hwy. 395 south of Constantia. 1365 Comment
  JEPS93827  Erigeron pumilus var. intermedius Vernon H. Oswald and Lowell Ahart 1998-6-4 9139 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  CAS-BOT-BC300121  Erigeron pumilus var. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mi. southeast of Milford, Hwy 395, above Honey Lake 1280 Comment
  UCD150396  Erigeron pumilus var. intermedius William Anderson 1963-6-3 s.n. Lassen Hartson Reservoir. Comment
  UCD18963  Erigeron pumilus var. intermedius R. E. Francis 1965-7-7 8 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 Comment
  CAS-BOT-BC300310  Erigeron tener G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2285 Lassen Summit Thompson Peak, south of Janesville 2330 Comment
  UCR67382  Eriogonum baileyi var. baileyi George K. Helmkamp 1990-10-4 M 9 A Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  SJSU13948  Eriogonum baileyi var. praebens N. A. Hopkins 1986-8-28 1381 Lassen County Rd 33 (Scott Rd), lower Long Valley N of Hwy &0 & E of Beckwourth Pass Comment
  NY242927  Eriogonum caespitosum B. M. Bartholomew 1993-5-13 6567 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield. 1330 Comment
  CAS-BOT-BC241837  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N. LItchfield, 26.6 mi S Ravendale 1310 Comment
  SEINET11934606  Eriogonum caespitosum Unknown 1977-1 150 Lassen 1.6 km SE of South Fork Reservoir and 1.6 km N of Skedaddle Creek Rd. ca 8 km NE of Herlong 1660 Comment
  RSA616540  Eriogonum cernuum var. cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border Comment
  POM105835  Eriogonum collinum R. M. Austin 1883-09 s.n. Lassen Madaline Plains Comment
  SEINET6332092  Eriogonum collinum A. J. Cronquist, A. H. Holmgren 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615 Comment
  UC1305745  Eriogonum collinum Noel H. Holmgren, James L. Reveal 1964-8-22 1723 Lassen 4 mi s Ravendale (48 mi ne of Susanville) Comment
  UC1537297  Eriogonum collinum Gordon H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1493 Comment
  CHSC99120  Eriogonum douglasii var. meridionale Lowell Ahart; John Dittes 2008-6-19 14895 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
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CAS-BOT-BC246500  Eriogonum douglasii var. meridionale Parkison & Party 1916-6-8 8 Lassen Lassen National Forest, Sage type, Harvey Valley 1676 Comment
  RSA0065383  Eriogonum elatum M. P. Harthill 1972-6-16 s.n. Lassen Doyle. Comment
  SEINET5330338  Eriogonum inflatum var. inflatum F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  CAS-BOT-BC259388  Eriogonum luteolum Clare B. Hardham 1961-6-16 7490 Lassen Gold Run Creek. South of Susanville Comment
  CAS-BOT-BC263047  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  RSA125289  Eriogonum maculatum Peter H. Raven, Otto T. Solbrig 1958-6-17 13271 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  CAS-BOT-BC267343  Eriogonum marifolium var. marifolium A. M. Vollmer; L. Beane 1953-7-1 83 Lassen Along Halls Flat Road beginning 6 miles west of Susanville to McArthur 1554 Comment
  POM105455  Eriogonum microtheca var. ambiguum Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  SD132453  Eriogonum nudum G. Helmkamp 1990-9-23 G 11 Lassen Sagebrush scrub area N of Ravendale. Riparian area beside small creek 1676 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
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. Comment
  CAS-BOT-BC269924  Eriogonum nudum var. pubiflorum A. M. Vollmer; L. Beane 1953-7-1 30 Lassen Along Halls Flat road, beginning 6 mi. West of Susanville, to McArthur 1554 Comment
  JEPS126471  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-9-2 CA 350 -065 Lassen Turn right onto Buckhorn Byway from 395. Continue past Pilgrim Lake. Turn right at the first available turn, past exclusion fence (around 20 miles). Will eventually arrived at riparian area. Comment
  UC1542950  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1758 Lassen Hayden Hill, old town site 1737 Comment
  UC761785  Eriogonum nudum var. pubiflorum R. F. Hoover 1940-9-28 4629 Lassen Susanville Comment
  SEINET530683  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
  CAS-BOT-BC258739  Eriogonum ovalifolium var. ovalifolium John Thomas Howell 1934-7-7 12469 Lassen Pine Creek Flat Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  CHSC92718  Eriogonum spergulinum var. reddingianum L. P. Janeway; B. Castro 2005-7-10 8483 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of 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
  JEPS94560  Eriogonum spergulinum var. reddingianum Vernon Oswald and Lowell Ahart 1997-6-24 8596 Lassen s of Susanville (on the n side of Diamond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1685 Comment
  CAS-BOT-BC271960  Eriogonum sphaerocephalum var. halimioides B. J. Hammerly 1941-6-21 46 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  SEINET530720  Eriogonum sphaerocephalum var. halimioides Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  UCR55662  Eriogonum sphaerocephalum var. halimioides G. R. Ballmer 1988-7-19 s.n. Lassen Warner Mtns, vicinity of Blue Lake 1982 Comment
  SEINET11261405  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 miles south of Adin.; 0 Comment
  CAS-BOT-BC262768  Eriogonum strictum var. proliferum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50658 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CHSC25912  Eriogonum strictum var. proliferum K. R. Stern 1967-7-1 2435 Lassen California State Hwy. 139, 14 mi. N of Susanville. Comment
  CHSC59788  Eriogonum umbellatum var. modocense Mary Meyer 1980-5-7 Lassen Scattered beneath sagebrush on Pete's Mesa. 1447 Comment
  CHSC99123  Eriogonum umbellatum var. modocense Lowell Ahart; John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  GMDRC6954  Eriogonum umbellatum var. modocense J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31429 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  HSC17376  Eriogonum umbellatum var. modocense M. T. Milligan 1964-8-6 202 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC161881  Eriogonum umbellatum var. modocense T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UC412898  Eriogonum umbellatum var. modocense W. E. Bryant Aug. 1888 Lassen Eagle Lake Comment
  CAS-BOT-BC265095  Eriogonum umbellatum var. nevadense Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16361 Lassen Near NE end of Eagle Lake Comment
  CAS-BOT-BC265096  Eriogonum umbellatum var. nevadense Louella Bass 1980-5-1 s.n. Lassen South side of Janesville on Hwy. 395, Sierra Nevada Comment
  CAS-BOT-BC265099  Eriogonum umbellatum var. nevadense Mrs. E. C. Van Dyke 1931-6-13 s.n. Lassen Kelly Camp, Mt. Lassen Natl. Park Comment
  NY399396  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Between Secret Valley and Ravendale. Upper Sonoran Life Zone 1524.0 Comment
  RSA766453  Eriogonum ursinum C. Epling, Wm. Robinson 1935-7-17 s.n. Lassen Chaos Crags, Lassen Park Comment
  CAS-BOT-BC262359  Eriogonum vimineum Alice Eastwood; John Thomas Howell 1940-6-16 8343 Lassen Janesville Comment
  CAS-BOT-BC262364  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  CHSC27646  Eriogonum vimineum Cindy Prouty 1978-6-27 24 Lassen SE of Eagle L., Black Mtn., S of Eagle L. Field Station. 1554 Comment
  JEPS19807  Eriogonum vimineum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6011 Lassen ne, along U.S. Hghway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  JEPS56158  Eriogonum vimineum W. L. Jepson 1918-8-5 7817 Lassen Madelin Plains 1615 Comment
  JEPS97409  Eriogonum vimineum Vernon H. Oswald and L. Ahart 1995-6-19 6882 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395 1371 Comment
  POM105137  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  UCR245457  Eriogonum vimineum Elizabeth A. Kempton 2007-8-15 511 Lassen Janesville, intersection of Hwy 395 and Sunnyside Road 973 Comment
  CAS-BOT-BC262355  Eriogonum vimineum David D. Keck 1930-7-23 951 Lassen Susanville 1280 Comment
  CAS-BOT-BC262356  Eriogonum vimineum Margaret Williams; Louella Bass 1972-10-22 EV 1 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  HSC97608  Eriophorum gracile Vernon H. Oswald, L. Ahart 1996-6-24 7888 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1) and 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 Comment
  CAS-BOT-BC308137  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC308141  Eriophyllum lanatum var. achilleoides B. J. Hammerly 1941-6-21 43 Lassen 8 mi. SE of Likely on Blue Lake Road Comment
  JEPS126470  Eriophyllum lanatum var. achilleoides Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-14 CA 350 -046 Lassen Drive North on Horse Lake Road. Comment
  UC1136992  Eriophyllum lanatum var. achilleoides George A. Fischer and Irwin H. Johnson 1933-7-14 F 250 Lassen 3.5 mi ne Grass Valley 1767 Comment
  UC1393123  Eriophyllum lanatum var. achilleoides John L. Strother 1970-5-23 956 Lassen about 6 mi n of Honey Lake 1280 Comment
  UC1249275  Eriophyllum lanatum var. achilleoides Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8469 Lassen 50 mi se Susanville Comment
  JEPS117575  Eriophyllum lanatum var. grandiflorum Lowell Ahart, John Dittes 2010-7-31 17024 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC301530  Eriophyllum lanatum var. integrifolium Louella Bass 1973-5-25 39 Lassen Elysian Valley 1325 Comment
  POM66833  Eriophyllum lanatum var. integrifolium Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  UC1609106  Eriophyllum lanatum var. integrifolium Vernon H. Oswald and Lowell Ahart 1993-6-28 5583 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  UC1487304  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UC648306  Eryngium alismifolium John Thomas Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  UCD107938  Eryngium pinnatisectum Tim Kuhn 2006-7-20 53 Lassen Eagle Lake Ranger District. Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  UC1584017  Erysimum capitatum G. Schoolcraft 1990-5-15 2047 Lassen about 4 mi s Nubeiber; John's Valley area 1310 Comment
  UC1184056  Erysimum perenne Jean Langenheim 1957-6-26 4398 Lassen from areas adjacent to 1937 chaparral quadrat (nw part of valley); Said Valley Comment
  CAS-BOT-BC153608  Erythranthe moniliformis John Thomas Howell; Gordon H. True 1973-7-31 50051 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  CHSC5016  Erythranthe primuloides L. G. Bennett 1967-7-14 173 Lassen 5.3 miles from the juction of Highway 44 and the Silver Lake rd. on Highway 44. 1950 Comment
  SEINET3836923 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Pratville, Clear Creek 1524 Comment
  SEINET13754534 Image available Erythranthe pulsiferae C. L. Hitchcock 1940-1 6611 Lassen Lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1370 Comment
  PASA565  Erythronium purpurascens Margaret Stason 1932-6-21 440 Lassen Devil's Kitchen, Lassen National Park Comment
  NY499985  Eschscholzia californica B. J. Ertter 1987-7-24 7297 Lassen Ca. 3/4 mile east-northeast of Beckwourth Pass at end of old crumbling paved road 1524.0 Comment
  CAS-BOT-BC312018  Eucephalus breweri Clare B. Hardham 1971-8-22 18390 Lassen Diamond Mountain 2133 Comment
  CDA3706  Euclidium syriacum E. E. Fix 1951-6-8 Lassen 0 Comment
  RSA0086578  Euphorbia Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  SEINET8506929  Euphorbia crenulata D. W. Taylor 2008-5-14 20198 Lassen Unnamed flat about 2 air miles SSE of Poison Butte 1768 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
  UCD142769  Euphorbia serpillifolia R. N. Raynor 1938-7-16 s.n. Lassen Honey Lake Valley. Comment
  NY1001166  Euphorbia spathulata A. Tiehm 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1387 Comment
  UCD142354  Euphorbia virgata Fay Roberts 1938-8-21 s.n. Lassen Bieber. Comment
  UC29863  Eurybia integrifolia Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  UC468921  Eurybia integrifolia Franklin P. Nutting Lassen Silver Lake Comment
  CAS-BOT-BC312105  Eurybia integrifolia Alice Eastwood 1912-8-22 1914 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  CAS-BOT-BC312106  Eurybia integrifolia Alice Eastwood 1912-8-22 1883 Lassen Morgans Springs, Lassen Butte Region Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  JEPS114856  Festuca idahoensis Lowell Ahart, John Dittes 2008-6-19 14880 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
  UCD66089  Festuca idahoensis Al Franklin 1987-7-6 87 -26 Lassen Eagle Lake Field Station, east shore of Eagle Lake, N of Susanville. 1584 Comment
  UCR17280  Festuca idahoensis Frank C. Vasek 1975-7-11 750711- 31 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC117218  Festuca microstachys var. microstachys Lowell Ahart; John Dittes 2016-6-7 21002 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1024808  Festuca rubra Leo Whitney 1935-6-23 3284 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD66339  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  UCD66393  Festuca rubra A. L. Hormay 1941-6-26 27 Lassen Lassen National Forest. Westwood Junction. 1737 Comment
  JEPS95107  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1997-6-24 8650 Lassen s of Susanville just s of small ond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout Red Rock Lookout; crest of Diamond Mountain 2249 Comment
  UCR18732  Frasera albicaulis Frank C. Vasek 1975-7-11 750711- 05 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  RSA304281  Fritillaria pudica James R. Shevock 1971-4-9 946 Lassen East of Dana, Highway 299 915 Comment
  CHSC25058  Galium aparine L. B. Barlow 1967-6-23 20 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  RSA647556  Galium aparine Marion P. Harthill 1972-6-16 s.n. Lassen Doyle. Comment
  CHSC68871  Galium bifolium Vernon Oswald; Lowell Ahart 1997-6-24 8606 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  UC1523737  Galium bolanderi Lisa Ganio 1981-6-17 24 Lassen Beaver Creek 1280 Comment
  CDA42121  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 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. Comment
  UC1479581  Galium multiflorum G. Schoolcraft 1980-5-30 245 Lassen sw Herlong; Bird Canyon 1432 Comment
  UCD121940  Galium trifidum subsp. subbiflorum John Thomas Howell 1959-9-23 34886 Lassen North end of Juniper Lake. 2057 Comment
  JEPS6562  Galium trifidum var. pacificum Brown and Wieslander 1922-7-30 46 Lassen Martin Sprs. Eagle Lake Comment
  JEPS58896  Galium trifidum var. pusillum John Thomas Howell 1959-9-23 34886 Lassen n end of lake Lassen Volcanic National Park, Juniper Lake 2057 Comment
  OBI77063  Garrya fremontii Anthony Baniaga 2011-6-7 310 Lassen Lassen NF.. W of 34N60. Burney Mtn East quad. T34N r3E sec 35 SW of NE 1747 Comment
  UC1137737  Gayophytum diffusum subsp. parviflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 247 Lassen Lassen National Forest 1767 Comment
  RSA0004469  Gayophytum helleri var. erosulatum W. L. Jepson 1918-8-2 7754 Lassen Beckwith Pass 1463 Comment
  HSC63969  Gayophytum humile Teresa Prendusi 1980-7-1 1121 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  UC107796  Gayophytum racemosum T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  HSC93314  Gentiana calycosa Vernon H. Oswald, L. Ahart 1996-8-1 8119 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  UC405455  Gentiana newberryi Mrs. R. M. Austin 1879-1 Lassen Mountain Meadows Comment
  CHSC77216  Geranium richardsonii Schoolcraft 1999-6-25 2840 Lassen SW of Lost Lake on SE slopes of Warner Mtns. 2225 Comment
  UC1037229  Geranium viscosissimum Leo Whitney 2007 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC1037272  Geranium viscosissimum Leo Whitney 1934-7-10 1766 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  POM91888  Geum aleppicum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  POM161476  Geum macrophyllum Franklin Nutting 1894-7-12 s.n. Lassen Pine Creek. Comment
  CAS-BOT-BC459363  Geum macrophyllum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49425 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC143570  Geum triflorum A. G. Brenneis 1928-7-3 B 14 Lassen Lassen National Forest, Jesson Valley 1463 Comment
  RSA470172  Gilia brecciarum Christopher Davidson 1975-6-7 2757 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SEINET14626750  Gilia brecciarum subsp. brecciarum D. L. Neal 1960-5-7 R- 34 Lassen Red Rock area, ca 10 miles S of Doyle. 1463 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
  CHSC7766  Gilia modocensis Beverley J. Wise 1969-5-18 76 Lassen 16.8 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1371 Comment
  UC604679  Gilia modocensis Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  RSA516988  Gilia ophthalmoides Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  UC1562812  Gilia salticola Barbara Ertter with Gary Schoolcraft 1987-6-16 7189 Lassen on s side Hot Springs VABM (ne side Honey Lake, Skeedaddle Mountains); Skeedaddle Mountains, s side Hot Springs VABM 2286 Comment
  CHSC115832  Glyceria borealis Lowell Ahart; John Dittes 2015-7-14 20326 Lassen In Big Vallley Canal, on the east side of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1269 Comment
  HSC95337  Glyceria borealis Gordon Leppig, J. Cromwell 1997-7-27 624 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  UC1483863  Glyptopleura marginata G. Schoolcraft 1980-5-9 232 A Lassen near state line s of High Rock Ranch 1219 Comment
  UC1536868  Gnaphalium palustre G. H. True Jr. 1938-7-14 956 Lassen near Janesville 1280 Comment
  CHSC60414  Gratiola ebracteata Mary Ann Showers 1992-6-13 2543 Lassen Shoreline at western end of Widow Lake. Lassen Volcania National Park. 2072 Comment
  UC1567378  Gratiola ebracteata G. Schoolcraft 1989-7-24 1992 Lassen Said Valley Reservoir; along reservoir 1630 Comment
  CHSC5231  Grayia spinosa V. Holt 1944-6-28 Lassen S slope of Rocky Point, w side of Eagle Lake. 1627 Comment
  SEINET12330175  Gymnosteris parvula M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -2 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale, 0.1 mi W Calif-Nev line Comment
  UCD98139  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CAS-BOT-BC388467  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  SEINET3818101  Habenaria leucostachys A. A. Heller 1938-1 Lassen Comment
  CHSC118792  Hackelia amethystina L. P. Janeway; B. Castro 2017-7-2 12341 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of Skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  JEPS103223  Hackelia amethystina G. Schoolcraft 1981-6-12 455 Lassen Gold Run Rd. on lower slopes of Diamond Mtn. 1889 Comment
  SEINET3928294  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0 1720 Comment
  UC1137586  Hackelia californica A. Simontacchi 1940-6-15 869 Lassen 0.8 mi sw of Blacks Mountain; Lassen National Forest 2103 Comment
  UC699734  Hackelia californica Farris Farris 1936-6-15 Lassen Eagle Lake Summit 1981 Comment
  UC1583977  Hackelia cusickii G. Schoolcraft 1990-7-2 2099 Lassen sw slopes of Cold Spring Mountain 1950 Comment
  POM72793  Hackelia micrantha Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1483797  Hackelia micrantha G. Schoolcraft 1979-7-10 134 Lassen w of road near top of Observation Mountain (aspect north) 2133 Comment
  SBBG63470  Hackelia velutina E. Rockwell -Jun-1925 53 Lassen Eagle Lake 1554 Comment
  UCD98902  Halogeton glomeratus R. Tofsrud; J. M. Tucker 1950-7-26 1978 Lassen Herlong Army Ordnance Depot, southeastern Lassen County. Comment
  HSC5786  Helianthus annuus R. G. Means 1962-7-4 65 Lassen 10 mi. N of Doyle, Hwy. 395 1220 Comment
  UC32278  Helianthus annuus Baker and Nutting 1894-7-2 Lassen Comment
  CHSC13635  Heliotropium curassavicum M. S. Taylor 1974-6-25 269 Lassen On w shore of Pelican Pt, on e shore of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  SEINET3871713  Heliotropium curassavicum Richard R. Halse 2010-8-25 8086 Lassen Along State Hwy. 139 ca 26/2 miles N of Susanville on the NE shore of Eagle Lake.; 0 1559 Comment
  UC174811  Hemizonella minima T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CDA7799  Hemizonia pungens subsp. pungens D. French 1970-10-8 Lassen Blickenstaff Road #311. 0 Comment
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  JEPS17743  Hesperolinon micranthum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5416 Lassen along Smoke Creek Ranch Rd. 6 mi e jnct. with U.S. 395; Bull Flat, Deep Creek 1428 Comment
  JEPS27189  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1682 Lassen Hwy 395 just w Tule Mountain 1645 Comment
  UC1601275  Hesperolinon micranthum Leo Whitney 1934-7-8 1793 Lassen open flat near Harvey Valley Spring (ca 14 mi w of Eagle Lake); Lassen National Forest Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CAS-BOT-BC310910  Heterotheca villosa Margaret Williams 1974-7-27 74- 61 -61 Lassen West of Hwy 395 and south of Hwy 70. Near Hallelujah Junction 1493 Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat 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
  UC506909  Hieracium albiflorum George A. Fischer, 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-BC318712  Hieracium horridum Wm. Bridge Cooke 1938-9-17 11703 Lassen Canyon below Horse Camp, Mount Shasta 2133 Comment
  CAS-BOT-BC315993  Hieracium nudicaule H. Dearing; M. Dearing 1938-7-1 2247 Lassen Near Westwood Comment
  UC897899  Hieracium nudicaule A. A. Heller 1938-7-28 15301 Lassen about a mi e Westwood (edge of s swamp) 1524 Comment
  CAS-BOT-BC280698  Holcus lanatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49501 Lassen Elysian Valley, west of Janesville 1325 Comment
  UCD84898  Holcus lanatus John Thomas Howell; Gordon H. True, M. Williams 1973-6-28 49501 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CAS-BOT-BC150128  Holodiscus microphyllus var. glabrescens P. Monnet 1913-7-4 802 Lassen Hot Springs Peak 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
  CHSC71232  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald; Lowell Ahart 1998-6-4 9140 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 Comment
  UC1609207  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  OBI77055  Hordeum brachyantherum Anthony Baniaga 2011-8-4 487 Lassen Lassen NF. About 1/2 mi WNW of Griffith Hill along 30n21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  UC1024802  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1935-6-23 3291 Lassen Camp 10 Fruit Grower's Supply Company Lassen National Forest Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  HSC10190  Hordeum jubatum M. T. Milligan 1964-8-6 200 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS114836  Hordeum jubatum Lowell Ahart, John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  JEPS97307  Hordeum jubatum Vernon H. Oswald and L. Ahart 1995-8-14 7189 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  UC570171  Hordeum jubatum H. S. Yates 1936-8-11 6075 Lassen Baxter Creek Susanville Quad., Baxter Creek 1280 Comment
  UCD85755  Hordeum jubatum August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UCD86237  Hordeum murinum subsp. glaucum John Thomas Howell 1973-7-10 49801 Lassen Susanville. In city park. 1295 Comment
  SEINET10483366  Horkelia fusca subsp. pseudocapitata Taylor 1982-7-8 Taylor 4789 Lassen T23N R17E sw sec 28. Beckwourth Pass quad. ALong spur rd ca. 1/3 mi w of Scott Rd, ca. 1.5 mi ne of Beckwourth Pass, ca. 30 mi n of Reno. 4800 ft. Sagebrush Scrub. 1463 Comment
  POM34906  Horkelia fusca var. brownii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC143985  Horkelia fusca var. tenella Clarence R. Quick 1962-6-17 62 -19 Lassen N. of DeLasmutt Ranch on Hwy. 44 along dirt road to Blacks Mountain E. F. Hdqrts. 1615 Comment
  HSC26604  Horkelia tridentata var. flavescens D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19221 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC537888  Horkelia tridentata var. flavescens A. M. Vollmer; L. Beane 1953-7-1 59 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  NY608898  Hornungia procumbens G. Schoolcraft 1993-6-1 2271 Lassen At Cayote Spring, east of 3 Springs on 5 Springs Mountain 1463.0 Comment
  CAS-BOT-BC213003  Hosackia crassifolia John Thomas Howell 1974-7-10 50551 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC213001  Hosackia crassifolia H. D. Ripley; R. C. Barneby 1943-6-14 5438 Lassen Volcanic hillskide, in open pine woods, Susanville 1402 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
  NY170061  Hutchinsia procumbens N. H. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1680 Comment
  CHSC21234  Hydrophyllum capitatum var. alpinum F. Tom Griggs; Robert A. Schlising 1974-5-30 3135 Lassen West side of Colman Lake, at margins of meadow. 1950 Comment
  UC773900  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen Burgess Spring Experiment Range; Lassen Forest 1752 Comment
  POM73939  Hydrophyllum occidentale Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  POM66398  Hymenoxys lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  SJSU8059  Hypericum anagalloides J. W. Tilden 1960-6-27 1523 Lassen 5 mi E of Westwood via Moonlight Rd 1524 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
  JEPS66829  Hypericum formosum var. scouleri Brown and Wieslander 1922-7-30 28 Lassen Eagle Lake, Martin Springs Comment
  CHSC7179  Idahoa scapigera Lynn R. Thomas 1969-4-17 101 Lassen E edge of Rice Canyon Rd., 4 mi. n of junction with 'back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  CDA24887  Idahoa scapigera T. C. Fuller 1963-6-1 10640 a Lassen 0.25 mile north of Willow Springs Campground, 3.1 miles southeast of Pittville-Susanville Road, 12.4 miles (road) south of Pittville. 0 Comment
  UC1123846  Ipomopsis aggregata A. Simontacchi 1940-7-1 884 Lassen 4.6 mi ssw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle 1889 Comment
  SD7674  Ipomopsis congesta Mrs. R. M. Austin 1880-1 Lassen Lassen Peak. Comment
  UC1134718  Iris missouriensis Robert W. Gardner 1937-6-16 G- 17 Lassen Burgess Spring; Halls Flat Quad. 1699 Comment
  CHSC59160  Isoetes bolanderi Vernon H. Oswald; Lowell Ahart 1992-9-15 5215 Lassen Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. Lassen Volcanic National Park. 2164 Comment
  UCD135760  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake campground, Lassen Park. 2057 Comment
  UC1609389  Isoetes howellii Vernon H. Oswald and Lowell Ahart 1993-6-28 5622 Lassen e Poison Lake (between Champs Flat and Harvey Valley, ne end of Little Harvey Valley, n of Hwy 44 along Rd 33N47, along small branch of Pine Creek); Little Harvey Valley 1737 Comment
  CAS-BOT-BC61857  Isoetes nuttallii Alice Eastwood; John Thomas Howell 1940-6-11 7984 Lassen Big Valley Mts. Comment
  UC1609409  Isoetes orcuttii Vernon H. Oswald and Lowell Ahart 1993-6-3 5476 Lassen between Poison Lake and Susanville (Champs Flat Rd (Lassen 21/105, Forest 32N02), 3.7 mi n of Hwy 44 at spur rd 32N02E, se side of Pine Creek Valley); Pine Creek Valley 1731 Comment
  CHSC111241  Iva axillaris B. Castro; L. P. Janeway 2012-7-3 1939 Lassen Modoc Plateau. Honey Lake Valley, NE side of Honey Lake; 2.9 air mi NW of Wendel. 2 road mi SE of Hwy 395, 0.35 mi S of Wendel Road on road into Fish and Game Wildlife Area [Honey Lake State WL Area, Fleming Unit]. 1219 Comment
  CHSC30626  Iva axillaris T. M. Lane 1975-7-7 41 Lassen Along Hwy 395, 5 km nnw of Termo; 56 km s of Alturas. 1815 Comment
  HSC71700  Ivesia paniculata Gary Schoolcraft 1981-8-18 564 Lassen 1585 Comment
  HSC75599  Ivesia paniculata Thomas W. Nelson, Jane Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 mi. E of Adin 1555 Comment
  JEPS94475  Ivesia paniculata Vernon H. Oswald and Lowell Ahart 1997-5-27 8494 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on n side of a creek paralleling the road); Forest Route 38N04 1546 Comment
  UC1594838  Ivesia paniculata J. Stephen Shelly and Ginger V. King 1985-6-29 1029 Lassen Adin-Madeline Rd. Ash Valley (15.4 mi w of U.S. Hwy 395) 1554 Comment
  RSA0005627  Ivesia paniculata B. Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 mi W of Madeline Comment
  CHSC47521  Juncus balticus Lowell Ahart; John Thomas Howell 1974-7-9 542 Lassen At the south edge of Eagle Lake. 1584 Comment
  SEINET6336292  Juncus balticus B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11503 Lassen Blue Door Flat, 7 or 8 miles east of Highway 395 on county road 510 1774 Comment
  UC648318  Juncus balticus Leo Whitney 1934-8-2 1970 Lassen Bridge Creek Camp Lassen National Forest 1737 Comment
  SEINET7421696 Image available Juncus balticus A. L. Hormay 1941-1 25441 Lassen Sec. 31, T 33N, R 9 E, Little Harvey Valley. Altitude 5500 ft. 2007 Comment
  SEINET11787326  Juncus bufonius A. Tiehm, Nachlinger, J.; Schoolcraft, G. 1984-1 8824 Lassen Rodeo Flat, 2.7 road mi W of state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  CHSC59101  Juncus bufonius var. bufonius Vernon H. Oswald; Lowell Ahart 1992-8-25 5187 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 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
  UC1137590  Juncus confusus A. Simontacchi 1940-7-3 918 Lassen 3.4 mi wsw Harvey Mtn. Lookout; Halls Flat Quad. 1828 Comment
  RSA129410  Juncus dubius H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow. 1524 Comment
  CAS-BOT-BC245809  Juncus hemiendytus var. hemiendytus Alice Eastwood; John Thomas Howell 1940-6-11 s.n. Lassen SW of Nubieber, Big Valley Mts. Comment
  HSC97877  Juncus hemiendytus var. hemiendytus Vernon H. Oswald, L. Ahart 1996-6-24 7852 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1), 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 Comment
  RSA201267  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  SD71006  Juncus howellii John Thomas Howell 1959-9-23 34880 Lassen North end of Juniper Lake. 2057 Comment
  SEINET3507366 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake Comment
  UC1100950  Juncus mexicanus Verne Grant and Irving Schneider 1947-7-30 8191 Lassen s point of w embayment Tule Lake 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
  HSC95202  Juncus nevadensis Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-28 512 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95327  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA201265  Juncus nevadensis J. T. Howell 1959-9-23 34884 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UCD108039  Juncus occidentalis Tim Kuhn 2006-7-26 76 Lassen Eagle Lake Ranger District. Comment
  CAS-BOT-BC279914  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley 1740 Comment
  RSA0035254  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, Cascade Range Highlands. 1730 Comment
  CHSC107318  Juncus uncialis Lowell Ahart; John Dittes 2011-6-21 17532 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC117193  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 20990 Lassen 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS126524  Juncus uncialis Lowell Ahart, John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  SEINET11738933  Juniperus californica L. V. Ritter 1969-1 191 Lassen E side Forward Rd., 8 mi NE Manton Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  HSC1267  Juniperus occidentalis L. H. Myers 1963-4-10 40 Lassen 1.0 mi. S of Janesville 1280 Comment
  HSC1271  Juniperus occidentalis R. H. Berg 1963-4-6 37 Lassen 10 mi. N of Susanville Comment
  SEINET3864776 Image available Juniperus occidentalis Stanley L. Welsh, N. Duane Atwood 2001-6-13 28123 Lassen Ca. 2 mi n of jct of Hwy 395 and Hwy 70, e of Beckwourth Pass.; 0 1575 Comment
  UC1134300  Juniperus occidentalis A. Simontacchi 1940-6-5 820 Lassen 8.0 mi wnw of Harvey Valley Ranger Station; Halls Flat Quad., Lassen National Forest Comment
  UC333780  Juniperus occidentalis unknown 1893-5-28 Lassen Susanville Comment
  UCD133775  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen 5 miles from Susanville; dry hills on Gold Run Creek. 1310 Comment
  CAS-BOT-BC81289  Juniperus osteosperma John Thomas Howell 1961-9-25 36969 Lassen East side of Beckwourth Pass 1554 Comment
  NY20362  Juniperus osteosperma N. H. Holmgren 1970-7-28 4625 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
  RSA597875  Juniperus osteosperma F. C. Vasek 1964-9-12 640912 -5 Lassen U.S. 395, 5.2 miles north of its junction with State 70 (U.S. alt. 40) 1479 Comment
  SD139404  Juniperus osteosperma F. C. Vasek 1964-9-12 day 6 Lassen U. S. 395, 5.2 miles north of its junction with State Highway 70 (U. S.40) 1480 Comment
  SEINET5335014  Juniperus osteosperma P. A. Lehenbauer 1937-10-24 s.n. Lassen east & south of Hallelujah Sta. 20 miles N of Reno Comment
  SJSU11548  Kelloggia galioides J. W. Tilden 1960-6-27 1496 Lassen Westwood 1554 Comment
  UC1125668  Kelloggia galioides H. P. Hagge 1929-9-17 37 Lassen Logan Mtn.; Eagle Lake Quad. 1828 Comment
  UC889305  Kelloggia galioides C. L. Hitchcock 1940-5-26 6602 Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 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
  CHSC91190  Koeleria macrantha Lowell 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 of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 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
  UC2027323  Kyhosia bolanderi Anthony Baniaga 2011-8-16 499 Lassen Lassen National Forest. Along F.S. 10, ca. 1 mi NE of Cummings Spring. Red Cinder quadrangle Comment
  UC726003  Kyhosia bolanderi A. A. Heller 1938-9-1 15342 Lassen about 2 mi e of Westwood 1524 Comment
  CHSC71864  Lactuca saligna Vernon H. Oswald; Lowell Ahart 1998-9-8 9574 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  JEPS94084  Lactuca saligna Vernon H. Oswald and Lowell Ahart 1998-9-8 9574 Lassen Hwy. 299 at the R.R. overpass on e. side of Nubieber (near the hwy.) 1255 Comment
  CHSC5067  Lactuca serriola L. Stites 1967-7-4 122 Lassen Collects at Eagle Lake Biology Station. 1371 Comment
  CAS-BOT-BC341485  Lagophylla ramosissima John Thomas Howell 1974-7-10 50527 Lassen Elysian Valley 1325 Comment
  JEPS38999  Lagophylla ramosissima W. L. Jepson 1918-8-2 7776 Lassen Bedswith Pass 1463 Comment
  POM204133  Lagophylla ramosissima J. T. Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles S of Susanville. Comment
  CAS-BOT-BC341480  Lagophylla ramosissima Margaret Williams 1974-7-27 74 -L-62 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC99279  Lasthenia glaberrima Lowell Ahart; John Dittes 2008-6-20 14901 Lassen Sides of a vernal pool, 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
  JEPS114878  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, along a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  CAS-BOT-BC204905  Lathyrus A. M. Vollmer; L. Beane 1953-7-1 100 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 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
  UC1137764  Lathyrus brownii August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  CAS-BOT-BC321496  Layia glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, S of Susanville. Comment
  JEPS94833  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1998-5-22 9109 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  CAS-BOT-BC321495  Layia glandulosa M. S. Taylor 1982-5-29 4571 Lassen 500 yds NE of the jct of Hwy 70 with Hwy 395 at Hallelulia Jct, ca 23 mi N of Reno. 1524 Comment
  CAS-BOT-BC534922  Lemna turionifera Peter H. Raven; Otto T. Solbrig 1958-6-17 13261 Lassen Ditch along United States Highway 395, 2.1 milesnorth-east of Standish Comment
  SFV1437  Lepidium appelianum I. L. Wiggins, D. B. Wiggins 1961-6-16 16529 Lassen 4.1 miles east of Bieber. 1265 Comment
  CHSC29943  Lepidium campestre Robin L. Ondricek 1978-6-19 61 Lassen Outside the lab at ELFS. 1554 Comment
  CHSC99534  Lepidium campestre Lowell Ahart; John Dittes 2008-6-20 14957 Lassen In meadow, 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
  UCR47477  Lepidium draba Don Pendleton 1986-6-24 s.n. Lassen 5 miles south of Termo on Hwy 395 1617 Comment
  JEPS114647  Lepidium perfoliatum Lowell Ahart, John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  UC1126714  Lepidium perfoliatum A. Simontacchi 1940-6-8 829 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 Comment
  CAS-BOT-BC12815  Lepidium perfoliatum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. Comment
  NY90026  Lepidium perfoliatum D. B. Dunn 1971-6-2 17749 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, Junction of US 395 and California 70 Comment
  UCD63835  Leptochloa fusca subsp. fascicularis Chandler Jensen 1959-9-8 Lassen Honey Lake Valley near Standish. Comment
  UC106733  Leptodactylon pungens T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  UC506992  Leptodactylon pungens George A. Fischer and Irwin H. Johnson 1933-7-12 F 202 Lassen Grass Valley; Lassen Forest, Grass Valley 1700 Comment
  CHSC99130  Leptosiphon bolanderi Lowell Ahart; John Dittes 2008-6-19 14892 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC91188  Leptosiphon 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
  CHSC92716  Leptosiphon ciliatus L. P. Janeway; B. Castro 2005-7-10 8480 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  RSA0092312  Leptosiphon harknessii Jim M. Andre, Tasha La Doux, Senna Andre, 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. 1732 Comment
  RSA31679  Leptosiphon harknessii A. A. Heller 1938-7-28 15299 Lassen About 2 miles east of Westwood. 1524 Comment
  RSA702599  Leptosiphon harknessii L. P. Janeway 2004-7-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  JEPS94470  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1997-5-27 8509 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, on small creek paralleling road on north); Forest Route 38N04 1560 Comment
  UCR201583  Leucocrinum montanum Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  SEINET6170686  Leucophysalis nana G. Schoolcraft 1999-6-29 2849 Lassen E edge of Madeline Plains ca 9 mi NE of Ravendale 1615 Comment
  CAS-BOT-BC444493  Lewisia triphylla George W. Gillett 1957-7-21 863 Lassen Lassen Volcanic National Park. Juniper Lake - Cameron Meadow trail 2118 Comment
  CAS-BOT-BC283769  Leymus cinereus Margaret Williams; Steven Williams 1974-7-26 74 -L-41 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 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
  POM113953  Leymus triticoides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET239973 Image available Leymus triticoides G. L. Clifton 1996-6-5 34630 Lassen East of Herlong close to the railroad. 1230 Comment
  UCD65590  Leymus triticoides R. Tofsrud 1947-7-1 218 Lassen Near Thermos. Comment
  UCD65617  Leymus triticoides L. Whitney 1933-8-4 2128 Lassen Lassen National Forest. Sheepshead, ca. 10 miles NW of N end of Eagle Lake. 1889 Comment
  UCD87762  Leymus triticoides L. G. Stiles 1927-6-2 s.n. Lassen Milford. Comment
  POM119423  Lilaea scilloides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC130709  Lilium pardalinum Louella Bass 1973-6-15 114 Lassen Elysian Valley 1325 Comment
  HSC15585  Lilium pardalinum subsp. pardalinum Fred J. Kindel 1955-7-8 Lassen Susan River Comment
  RSA508635  Lilium washingtonianum Mrs. R. M. Austin 1880-7-20 s.n. Lassen Mount Dyer [SW edge of Lassen Co.] Comment
  CHSC59098  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1992-8-25 5188 Lassen Grassy Creek at the E end of Snag Lake. Lassen Volcanic National Park. 1850 Comment
  UC1567430  Limosella acaulis G. Schoolcraft 1989-7-24 1995 Lassen along n shore Said Valley Reservoir; n shore of Said Valley Reservoir 1630 Comment
  CAS-BOT-BC246146  Limosella aquatica Malcom A. Nobs; S. Galen Smith 1949-7-20 1046 Lassen Bieber, along Highway 299 Comment
  JEPS114858  Linanthus bolanderi Lowell Ahart, John Dittes 2008-6-19 14892 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  SEINET10496792  Linanthus ciliatus Mary Susan Taylor 1974-1 Taylor 284 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC89741  Linanthus harknessii L. P. Janeway 2004-6-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS58449  Linanthus harknessii W. L. Jepson 1918-8-5 7814 Lassen near South Fork Peak 1645 Comment
  CHSC29901  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds. 1584 Comment
  CHSC79186  Linanthus pungens L. P. Janeway 2000-6-24 6838 Lassen Northern High Sierra Nevada. Volcanic promontory on south edge of the top of Crystal Peak. 2371 Comment
  UC1107337  Linanthus septentrionalis Jean Langenheim 1957-6-22 4367 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  UC1553388  Linaria genistifolia subsp. dalmatica G. Schoolcraft 1988-8-23 1852 Lassen sw corner of Chestnut and Grand in Susanville Susanville 1310 Comment
  UC867779  Linum lewisii Alice Eastwood Aug 22 1912-Aug 26 1912 1853 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC108025  Lithophragma glabrum Lowell Ahart; John Dittes 2011-6-20 17488 Lassen Meadow, about 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1258492  Lithophragma glabrum G. Schoolcraft 1980-4-8 201 Lassen along Shaffer Mountain Peak road just w Hwy. 395; Shaffer Mountain Peak road 1402 Comment
  JEPS119670  Lithospermum arvense Lowell Ahart, John Dittes 2012-7-11 18351 Lassen About 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittvile, 3955 feet east of Lassen - Shasta County Line, Fall River Valley. Comment
  JEPS107869  Lithospermum ruderale Lowell Ahart, John Dittes 2005-6-2 11932 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  SEINET10456166  Lithospermum ruderale Paul Gallian, David B. Dunn 1971-6-2 Gallian 463 Lassen 6 mi. N of Hallelujah Jct. on US Hwy 395. 1402 Comment
  CHSC7743  Lomatium Beverly J. Wise 1969-5-3 113 Lassen 7.3 mi. east on Las. Ca. Rd.338, past junction with Hwy 395. 1645 Comment
  JEPS105642  Lomatium bicolor var. leptocarpum L. P. Janeway 2001-6-19 7186 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain 1640 Comment
  POM132862  Lomatium bicolor var. leptocarpum M. S. Baker 1894-07 s.n. Lassen Big Valley Comment
  UC21192  Lomatium bicolor var. leptocarpum M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC604536  Lomatium bicolor var. leptocarpum C. W. Sharsmith 1938-7-18 3633 Lassen 2 mi. s. Madeline (Madeline Plains); Madeline Plains Comment
  SEINET178371  Lomatium dissectum var. multifidum Marcus E. Jones 1897-6-25 Lassen Susanville. 1341 Comment
  UC1137733  Lomatium dissectum var. multifidum L. R. Short 1936-5-12 S- 348 Lassen Lassen Forest, Burgess Spring Experimental Range 1834 Comment
  RSA271913  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA452590  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS125805  Lomatium foeniculaceum subsp. macdougalii William Harnach 2010-6-8 1243 Lassen 2 miles west of the California Nevada state line, north side of Fort Sage Road, northeast of Doyle, CA. Comment
  HSC81652  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6028 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  NY1066293  Lomatium macrocarpum B. M. Bartholomew 1993-5-13 6554 Lassen Just south of Ravendale. 1580 Comment
  RSA517344  Lomatium nevadense Barbara Ertter, Gary Schoolcraft 1987-6-16 s.n. Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  JEPS118215  Lomatium nevadense var. nevadense Dean W. Taylor 2004-5-11 19060 Lassen 1.5 miles southwest of Constantina along Highway 395 1402 Comment
  UC1123082  Lomatium nevadense var. nevadense A. Simontacchi 1940-5-10 689 Lassen 7.3 mi. w. Harvey Mt. Lookout (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  UC1561383  Lomatium nevadense var. nevadense Barbara Ertter with Gary Schoolcraft 1987-6-16 7185 Lassen ridge w. Hot Springs VABM (Skeedaddle Mts., on n.e. side of Honey Lake); Skeedaddle Mts., Honey Lake 2133 Comment
  UC1123086  Lomatium nevadense var. parishii A. Simontacchi 1940-5-14 709 A Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1123088  Lomatium nudicaule A. Simontacchi 1940-6-13 857 Lassen 3.3 mi. w.-s.w. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UC1137735  Lomatium nudicaule L. R. Short and Wm. Gansberg 1936-6-8 S- 399 Lassen Lassen Forest, Burgess Spring Exp. Range 1755 Comment
  UC1609374  Lomatium piperi Vernon H. Oswald and Lowell Ahart 1993-6-3 5471 Lassen between Poison Lake and Susanville (Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi. n. of Hwy. 44) 1749 Comment
  CHSC27666  Lomatium ravenii Robert A. Schlising 1978-7-2 3309 Lassen Ca 1.5 mi S Ravendal, near jct hwy 395 and horse Lake Road; large population between Horse Lake Road and S. Pac. RR tracks. 1621 Comment
  CHSC112191  Lomatium roseanum Dean Wm. Taylor 2012-6-7 21235 Lassen Sierra Nevada. Diamond Mts.: Ridgetop 1 mile east of Diamond Peak. 2225 Comment
  OBI81753  Lomatium triternatum Tracey Call, Viola Call 1961-5-30 2051 Lassen 2 miles north of Madeline Comment
  CHSC112137  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21244 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 air miles S of Adin). 1722 Comment
  OBI81391  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2049 Lassen Ravendale, Horse Lake road. 1/8 mile west of Jct. with 395 about 1.5 miles south of Ravendale, in sagebrush. Yellow blossom. 1463 Comment
  RSA0049611  Lomatium vaginatum Dean Wm. Taylor 2012-6-7 21232 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  UCD55281  Lomatium vaginatum Ellen Dean; Gary Schoolcraft 2006-5-16 3100 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. 1207 Comment
  RSA38457  Lomatium vaginatum P. A. Munz 1947-5-19 11880 Lassen Madeline 1677 Comment
  SEINET13944725 Image available Lomatium vaginatum Arnold Tiehm, Margaret Williams and Gary Schoolcraft 1986-1 10345 Lassen 6.7 miles east of highway 395 on dirt road to Smoke Creek and the Smoke Creek Desert; 4650 ft. T30 R16E SEC3. 1417 Comment
  CHSC61026  Lonicera cauriana Vernon H. Oswald; Lowell Ahart 1993-8-3 5751 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  RSA18256  Lonicera conjugialis C. B. Wolf 1929-9-1 3786 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  CHSC7677  Lotus corniculatus Beverley J. Wise 1969-5-23 59 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  UC1249270  Lotus corniculatus Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8474 Lassen 1 mi se Milford (near Honey Lake, 26 mi se of Susanville) 1310 Comment
  UC80952  Lotus nevadensis var. nevadensis T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC24959  Lotus purshianus K. R. Stern 1974-6-26 5858 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, ca. 1.8 mi nw of intersection with Hwy. 44. Comment
  UC1544785  Lotus purshianus var. purshianus Almut G. Jones 1984-8-11 6876 Lassen near Doyle (along Road 395) 1350 Comment
  UC862219  Lotus purshianus var. purshianus A. A. Heller 1938-7-28 15300 Lassen just e Westwood Comment
  RSA122900  Lotus unifoliolatus G. A. Fischer, Irwin H. Johnson 1933-7-12 193 Lassen Grass Valley 1695 Comment
  RSA28314  Lotus unifoliolatus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC113075  Ludwigia palustris Lowell Ahart; John Dittes 2013-7-23 18904 Lassen Dry drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS127169  Ludwigia palustris Lowell Ahart, John Dittes 2016-7-15 21220 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC198253  Lupinus John Thomas Howell 1976-7-19 51950 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  SEINET5766201 Image available Lupinus M. S. Baker, Frank Nutting 1894-1 s.n. Lassen Big Valley Comment
  NY748272  Lupinus W. W. Eggleston 1910-9-3 6298 Lassen Vicinity of Doyle Station 1240 Comment
  JEPS108147  Lupinus andersonii L. P. Janeway, B. Castro 2005-7-10 8482 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 & 28N02) and Road 28N01 1859 Comment
  CHSC118483  Lupinus angustiflorus Don Lepley 2015-6-14 Lassen Lassen National Forest. Eagle Lake Ranger District. Along Road 32N73 about 0.4 air mile east-southeast of Antelope Mt. Lookout and about 18 air miles northwest of Susanville. UTM 677436 x 4495404 2244 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  SEINET10490460  Lupinus arbustus subsp. arbustus Katherine L. Morris 1973-5-25 Morris 211 Lassen 9.6 miles n of milford on us 395 in an area covered with artemisia, purshia, And rabbit bush Comment
  NY732862  Lupinus arbustus subsp. calcaratus H. D. D. Ripley 1944-5-30 5975 Lassen Ravendale 1676 Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  POM252845  Lupinus arbustus subsp. silvicola A. A. Heller 1938-6-4 15142 Lassen In open places near Fredonyer Pass. 1707 Comment
  UC1553386  Lupinus argenteus G. Schoolcraft 1988-8-24 1856 Lassen 16 mi e Adin; Ash Valley RNA/ACEC 1554 Comment
  CAS-BOT-BC208744  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Just outside of Johnstonville on U.S. Highway #395. 1280 Comment
  CHSC71084  Lupinus argenteus var. heteranthus Vernon H. Oswald; Lowell Ahart 1998-5-22 9094 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  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
  JEPS94125  Lupinus argenteus var. heteranthus Vernon H. Oswald and Lowell Ahart 1998-5-22 9094 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  NY736930  Lupinus argenteus var. heteranthus G. H. True Jr. 1936-6-27 556 Lassen Near top of Hot Spring Mountain 1829 Comment
  NY736931  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of Doyle, along Highway 395 Comment
  SBBG126108  Lupinus argenteus var. heteranthus L. Ahart, J. Dittes 2010-7-31 16977 Lassen ca 100 yards NE of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  UC1129453  Lupinus argenteus var. heteranthus E. Sawyer 1935-6-21 229 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  UC865087  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 Lassen just outside of Johnstonville ( along U.S. Hwy 395) Comment
  SEINET5327880  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6019 Lassen 3 mi W of Doyle Comment
  CAS-BOT-BC196640  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  RSA60369  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 miles south of Doyle. 1372 Comment
  SEINET10969761  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 511 Lassen 6 mi. N of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  POM23945  Lupinus confertus F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  UC127007  Lupinus lepidus var. confertus M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  SEINET8051636  Lupinus lepidus var. confertus G. Schoolcraft 1992-8-11 2246 Lassen Along Highway 395 near inters. of Janesville Road 1280 Comment
  CHSC14189  Lupinus lepidus var. lobbii M. S. Taylor 1974-7-10 271 Lassen Collected roadside, ca. 3 mi s of Gallatin Beach, ca. 3 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC99135  Lupinus lepidus var. lobbii Lowell Ahart; John Dittes 2008-6-19 14886 -A Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1137588  Lupinus lepidus var. lobbii A. Simontacchi 1940-6-30 909 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET10904060  Lupinus lepidus var. sellulus Mary Merello 1993-6-27 Merello 741 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  CAS-BOT-BC202120  Lupinus nevadensis Doris Kildale Gillespie 1930-5-13 9373 Lassen Beteen Susanville and Janesville Comment
  JEPS103164  Lupinus nevadensis Beth Corbin 2002-4-11 1056 Lassen Skedaddle Ranch Rd, W of Skedaddle Ck, .5 mi NE of Spencer Ck Rd. 1310 Comment
  SEINET10450708  Lupinus nevadensis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2595 Lassen Hallelujah jct. Intersection of u.s. Hwy. 395 And state hwy. 70. In open waste Area adjacent to artemisia tridentata community. 1433 Comment
  SEINET8059970  Lupinus polyphyllus var. burkei W. W. Eggleston 1910-1 6305 Lassen Vicinity of Doyle Station 1240 Comment
  SEINET10486219  Lupinus saxosus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2575 Lassen 6 mi s of adin; along state hwy. 139 Right-of-way. In basalt-clay, grassy road Bank. Artemisia-juniper association. 1372 Comment
  RSA69483  Luzula comosa F. W. Peirson 1926-6-22 6826 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  CHSC65313  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the edges of the lake and on floating bogs. 1859 Comment
  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
  UC1567356  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen intersection of Highway 139 and A2 s Adin 1341 Comment
  CAS-BOT-BC342657  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  CAS-BOT-BC343692  Madia elegans Gary Schoolcraft 1985-8-5 1501 Lassen South of Doyle 1402 Comment
  CAS-BOT-BC343698  Madia elegans Margaret Williams; Louella Bass 1972-10-22 EV 7 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  POM29905  Madia elegans subsp. elegans Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA719892  Madia elegans subsp. elegans Michael A. Vincent, K. Levings 2006-7-29 12912 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  UC89366  Madia exigua T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  CHSC29911  Madia glomerata Robin L. Ondricek 1978-8-26 126 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  OBI55501  Madia glomerata David J. Keil, Kathleen Keil 1992-7-25 23607 Lassen Along hwy 36, 9.1 mi E of Plumas County line, W of Susanville 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
  SJSU10452  Maianthemum stellatum H. L. Buckalew 1961-7-9 Lassen spring near Blue Lake, Warner Mts 1828 Comment
  CHSC7775  Malva neglecta Beverly J. Wise 1969-5-26 68 Lassen Susanville - 833 Mark St. 1310 Comment
  UC18838  Malvella leprosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3330 Lassen near the hot springs Honey Lake Valley 1219 Comment
  RSA312311  Malvella leprosa Verne Grant, Irving Schneider 1947-9-6 8386 Lassen Hot springs about one mile west of Wendel. Comment
  UCD18955  Marsilea vestita Raymond D. Ratliff 1965-7-22 23 Lassen Lassen National Forest, Harvey Valley Allot. (HV 78-73). 1706 Comment
  CHSC112768  Matricaria discoidea Lowell Ahart; John Dittes 2013-7-22 18862 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS114749  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  RSA715623  Matricaria matricarioides L. Ahart, John Dittes 2005-6-1 11895 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
  UC585137  Matricaria occidentalis E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1781 Lassen 3 mi e Susanville 1219 Comment
  JEPS107816  Medicago lupulina Lowell Ahart, John Dittes 2005-6-2 11966 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  SCFS2169  Medicago sativa H. Naqui 1965-7-13 130 Lassen PCT dunes [?] bridge, Hwy 139 1402 Comment
  JEPS94455  Melica fugax Vernon Oswald and Lowell Ahart 1997-6-24 8645 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC188796  Melica fugax Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UCD37478  Melica fugax Beecher Crampton 1960-6-18 5726 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UCD87291  Melica fugax Jack Major 1966-6-24 s.n. Lassen Lassen County (northeastern): Long Valley, 3 miles airline southwest of Patterson Guard Station, Modoc National Forest. Comment
  CHSC11769  Melica stricta Wayne O. Baum 1971-7-5 71 -3 Lassen E. slope of Gallatin Peak. 2011 Comment
  UCR67372  Mentha canadensis George K. Helmkamp 1990-9-23 E- 16 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CHSC60751  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-14 5536 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
  CHSC60909  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-7-8 5654 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poisen Lake. 1709 Comment
  JEPS117360  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  JEPS29743  Mentzelia albicaulis Rimo Bacigalupi and L. R. Heckard 1962-5-28 8498 Lassen 2.7 mi n Milford (along U.S. highway 395) 1219 Comment
  CHSC117538  Mentzelia congesta Lowell Ahart; John Dittes 2016-7-12 21150 A Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south ofd 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
  CHSC48605  Mentzelia congesta Vernon Oswald 1986-5-28 2054 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  SEINET8707736  Mentzelia congesta B. L. Wilson, D. Lytjen, N. Otting. 2005-7-27 11547 Lassen Pine Dunes, an exclosure, S of Buckhorn Road and ca 1 mile NW of Buckhorn Reservoir. 1716 Comment
  UC124778  Mentzelia congesta T. S. Brandegee 1893-6-23 Lassen Honey Lake Comment
  UC73419  Mentzelia congesta Milo S. Baker 1890-1 Lassen Honey Lake Valley Comment
  CHSC4913  Mentzelia dispersa A. E. Anderson 1967-6-23 10 Lassen Abundant among sagebrush in Jeffrey Pine-Juniper forest around Eagle Lake Biological Station. 1554 Comment
  JEPS127346  Mentzelia dispersa Lowell Ahart, John Dittes 2016-7-13 21124 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS94543  Mentzelia dispersa Vernon Oswald and Lowell Ahart 1997-6-24 8603 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  UC872458  Mentzelia dispersa C. L. Hitchcock 1940-5-26 6606 Lassen ca 12 m n Fall River Mills (Shasta Co.) (lava beds, On Fall River) 1371 Comment
  JEPS88213  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1996-6-17 7772 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville 1432 Comment
  RSA202434  Mentzelia montana Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of Likely) 1905 Comment
  CHSC27075  Menyanthes trifoliata Robert A. Schlising 1978-8-1 3332 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  CHSC68851  Mertensia ciliata Vernon Oswald; Lowell Ahart 1997-6-24 8617 Lassen South of Susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. 2036 Comment
  JEPS95161  Mertensia ciliata Vernon Oswald and Lowell Ahart 1997-6-24 8617 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  CHSC7717  Mertensia longiflora Beverley J. Wise 1969-5-3 3 Lassen 12 mi. N.E. of Susanville on Lass. Co. Rd. 216 off Las. Co. Rd. 215. On bank of Willow Creek. 1554 Comment
  CAS-BOT-BC429183  Micranthes oregana John Thomas Howell 1934-7-9 12516 Lassen Bridges Creek Spring Comment
  CAS-BOT-BC349300  Microseris nutans A. M. Vollmer; L. Beane 1953-7-1 53 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 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
  HSC28899  Microseris nutans D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19168 Lassen 3 mi. N of Westwood Comment
  POM34993  Microseris nutans Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC1136771  Microseris nutans L. R. Short 1936-6-1 S- 353 Lassen Lassen Forest 1859 Comment
  UC35776  Microseris nutans M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley 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
  CDA8392  Microseris nutans T. C. Fuller 1963-6-1 10631 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  SD62167  Miltitzia lutea Rimo Bacigalupi, G. T. Robbins 1955-7-21 5429 Lassen Southeastern part of Secret Valley, along Smoke Creek Ranch Road, 8.0 miles east of U. S. Highway 395. 1402 Comment
  UC1776670 Image available Mimulus arvensis G. Schoolcraft 1994-7-6 2356 Lassen About 2 miles west of Boot Lake 2103 Comment
  UCD122430  Mimulus breviflorus S. E. Schoenig 1998-7-5 98- 71 Lassen East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track. 1749 Comment
  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
  UC726695  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi e Westwood 1524 Comment
  UC526139  Mimulus guttatus John Thomas Howell 1934-7-9 12518 Lassen Bridge Creek Spring Comment
  JEPS23736  Mimulus inflatulus Rimo Bacigalupi with S. Galen Smith 1957-6-28 5998 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  JEPS107380  Mimulus mephiticus Lowell Ahart, John Dittes 2005-6-1 11869 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS94563  Mimulus mephiticus Vernon Oswald and Lowell Ahart 1997-6-24 8597 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 Comment
  UC726697  Mimulus microphyllus A. A. Heller 1938-6-22 15183 Lassen 1 mi e Westwood 1524 Comment
  JEPS10777  Mimulus moniliformis Brown and Wieslander 1922-7-30 17 Lassen Martin Springs Comment
Read comments
Jun 4 2007
  SEINET10830517  Mimulus nanus Mary Susan Taylor 1974-1 Taylor 311 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS27381  Mimulus nanus var. mephiticus H. W. Grinnell 1934-6-1 Lassen top of divide 8 mi sw Susanville 1950 Comment
  JEPS85744  Mimulus nanus var. mephiticus Roy E. Buck, Robert A. Price 1988-6-26 1032 Lassen ca. 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  LA209350  Mimulus nanus var. mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 sn Lassen Near Old Chat Comment
  LA95554  Mimulus nanus var. mephiticus Frank W. Peirson; 6853 Lassen Madeline Plain Comment
  POM297719  Mimulus nanus var. mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat. Comment
  RSA422243  Mimulus nanus var. mephiticus Christopher Davidson 1975-6-7 2765 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC886157  Mimulus nanus var. mephiticus A. A. Heller 1938-6-22 15188 Lassen about 1 1/2 mi s Westwood 1524 Comment
  UCD94000  Mimulus nanus var. mephiticus Dena Grossenbacher; Joel Smith 2008-6-25 893 Lassen Along Forest Service Road 29N43 approximately 1 mile east of junction with Gold Run Road. 1682 Comment
  HSC81185  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  POM43828  Mimulus nanus var. nanus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  UC1063561  Mimulus nanus var. nanus A. Simontacchi 1940-5-14 718 Lassen 3.5 mi sw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1553406  Mimulus nanus var. nanus Gary Schoolcraft 1988-6-20 1813 Lassen 16 mi w Madeline; Ash Valley 1584 Comment
  RSA60366  Mimulus nanus var. nanus E. K. Balls 1950-5-9 15953 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  SBBG26857  Mimulus pulsiferae C. L. Hitchcock 1940-5-28 6611 Lassen lava beds, ca. 18 mi N of Fall River Mills on Fall River Comment
  UC1063104  Mimulus pulsiferae A. Simontacchi 1940-6-15 862 Lassen 2.3 mi ssw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA536394  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-18 627 Lassen Gray's Valley, 4 miles N of USFS Bogard Work Center. 1715 Comment
  RSA152664  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  NY813498  Mirabilis laevis var. retrorsa M. Bourell 1997-5-31 5881 Lassen Wendel Road 10.9 miles southeast of Highway 395. Comment
  UC477503  Monardella glauca Geo. A. Fisher 1928-6-12 27 Lassen Lassen Forest 1615 Comment
  CHSC13637  Monardella odoratissima M. S. Taylor 1974-7-3 275 Lassen Abundant along roadsides ca. 5 mi s of Eagle Lake and Gallatin Beach. 1524 Comment
  HSC22951  Monardella odoratissima John Pratt 1970-6-21 30 Lassen 1738 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
  CHSC118842  Monardella odoratissima subsp. pallida L. P. Janeway; B. Castro 2017-7-2 12340 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  CHSC12413  Monardella odoratissima subsp. pallida Anne Linda Brisk 1969-7-10 42 Lassen 6 mi from ELBS on Road 5A. 1889 Comment
  OBI75862  Monardella odoratissima subsp. pallida Anthony Baniaga 2011-9-1 509 Lassen Lassen Natl Forest. W of Bailey Crk, along F.S. 10 Red Cinder quad. T29N R7E sec 3 SE of NE 1844 Comment
  HSC14280  Monardella villosa D. E. Anderson 1963-8-25 2800 Lassen 3 mi. N of Cromberg along Hwy. Alt 40 1372 Comment
  JEPS95874  Monolepis nuttalliana Vernon H. Oswald and L. Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030: T31N R15E Sect. 31, 4420 ft elevation, sagebrush scrub 1347 Comment
  UCR244049  Monolepis pusilla Jim Andre 1993-6-1 19719 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC444695  Montia chamissoi Louella Bass 1973-6-17 123 Lassen Elysian Valley. 1325 Comment
  CHSC59564  Montia chamissoi Mary Meyer 1980-5-15 531 Lassen In streams along rocks and in moist riparian sites. 1371 Comment
  CHSC60764  Montia chamissoi Vernon H. Oswald; Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02), 5.3 mi E of Lassen 105 (32N28Y), near Summit Camp, ca. 7 mi (air) W of Eagle Lake. Common in shallow water and on wet soil along a streamlet draining into a pond located in a small meadow surrounded by open pine woodland with an understory of sagebrush. 1889 Comment
  JEPS28404  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen 1 mi above Butte Lake (Lassen Volcanic National Park, Widow Lake Trail); Lassen Volcanic National Park, Widow Lake Trail 1905 Comment
  NY497728  Montia chamissoi G. Schoolcraft 1993-6-1 2272 Lassen Upper Secret Creek, south of Tule Patch Spring 1463.0 Comment
  OBI76977  Montia chamissoi Anthony Baniaga 2011-6-20 385 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  CAS-BOT-BC444696  Montia chamissoi Louella Bass 1977-6-12 77 -3 Lassen Elysian Valley 1325 Comment
  POM312351  Montia chamissoi Malcolm A. Nobs, S. Galen Smith 1949-7-21 1064 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  UC1586593  Montia dichotoma Vernon H. Oswald 1991-5-28 4618 Lassen 5 mi ne of Bieber (Wayman Barn at the w end of Hunt Road, Ash Creek Wildlife Area, flat east of barn); Ash Creek Wildlife Area 1264 Comment
  CAS-BOT-BC445064  Montia linearis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49216 Lassen Elysian Valley northwest of Janesville 1325 Comment
  JEPS107818  Montia linearis Lowell Ahart, John Dittes 2005-6-2 11956 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  UC1136744  Montia linearis A. Simontacchi 1940-5-14 711 Lassen 10.2 mi e of Coyote Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  CAS-BOT-BC262635  Muhlenbergia asperifolia John Thomas Howell 1973-7-10 49801 Lassen Hwy. 395, 4 miles north of Doyle Comment
  CHSC44580  Muhlenbergia asperifolia Lowell Ahart; John Thomas Howell 1974-7-9 519 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  CHSC60477  Muhlenbergia filiformis Mary Ann Showers 1992-6-12 2519 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  CHSC96693  Muhlenbergia filiformis Gordon Leppig; Juli Neander, Kai Neader 1997-7-25 680 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  HSC95294  Muhlenbergia filiformis Gordon Leppig 1998-7-12 958 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC275333  Muhlenbergia jonesii John R. Reeder; Charlotte G. Reeder 1973-7-1 6240 Lassen Ca. 25 miles NW of Susanville along State Highway 44 in Lassen National Forest 1767 Comment
  RSA129677  Muhlenbergia richardsonis G. A. Fischer, Irwin Johnson 1933-7-12 F- 196 Lassen Lassen National Forest; Grass Valley. 1695 Comment
  RSA268991  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1972-7-24 5812 Lassen Lassen National Forest; 17 miles NW of Susanville, along Hwy 44 1128 Comment
  UC1483824  Muilla transmontana G. Schoolcraft 1980-6-6 255 Lassen sw Herlong; Bird Canyon 1341 Comment
  UC1924589  Myosurus apetalus Debra Valov 2006-5-29 2006019 Lassen Bieber California, Lassen Co., Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  SEINET12093181  Myosurus apetalus M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale. 0.1 mi W of Calif-Nev line Comment
  CAS-BOT-BC83320  Myosurus minimus James Jokerst 1983-7-25 1890 Lassen Near Madeline Plains. 1614 Comment
  JEPS114645  Myosurus minimus Lowell Ahart, John Dittes 2008-6-20 14940 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
  UC1584005  Myosurus minimus G. Schoolcraft 1990-5-16 2055 Lassen just e Third Butte 1267 Comment
  CHSC77218  Myriophyllum sibiricum G. Schoolcraft 1996-7-10 2532 Lassen Willow Creek- northeast of Susanville. 1432 Comment
  JEPS124839 Image available Myriophyllum sibiricum John Degenfelder 1969-7-8 85 Lassen on highway 139 about 16 miles north of Susanville. Comment
  RSA338411  Myriophyllum spicatum Robert F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, near junction of Termo-Grasshopper Rd. & Hwy 139. 1433 Comment
  HSC22985  Nama aretioides John Pratt 1970-7-5 67 Lassen 1250 Comment
  CDA40304  Nama aretioides var. multiflora S. E. Piper 1943-7-2 s.n. Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC91296  Nama densa var. densa Lowell Ahart; John Dittes 2005-6-1 11908 A Lassen On the east side of Scott Road, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1460 Comment
  JEPS19815  Navarretia breweri Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 -a Lassen 7 mi n Madeline (about 1 mi n of Sage Hen siding on S.P Railroad, just e of U.S. Highway 395) 1676 Comment
  UC133863  Navarretia breweri Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  CHSC29859  Navarretia capillaris Robin L. Ondricek 1978-7-6 90 Lassen On the w side of Lower Dry Lake. 1645 Comment
  CHSC116082  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2015-7-13 20303 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
  CHSC29924  Navarretia intertexta subsp. propinqua Robin Ondricek 1978-6-7 40 Lassen Murrers Upper Meadow, .7 mi E of intersection with main road to ELFS and tunnel crossing. 1560 Comment
  UC1594649  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5111 Lassen s side Hwy. 44 (Bridge Creek entering McCoy Flat Reservoir, between Old Station and Susanville); McCoy Flat Reservoir, Bridge Creek 1691 Comment
  JEPS70408  Navarretia intertexta subsp. propinqua W. L. Jepson 1918-8-5 7815 Lassen near South Fork Peak (camp at summit road) 1645 Comment
  POM75594  Navarretia leucocephala subsp. minima Marcus E. Jones 1897-6-18 10107 Lassen Chat. 1524 Comment
  UC909096  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 a Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  UCD48537  Navarretia leucocephala subsp. minima Gerald Dickinson 1963-7-3 75 Lassen Along U.S. Highway 299, 1 mile west of Bieber. 1249 Comment
  RSA67607  Navarretia sinistra Verne Grant, Alva Grant 1950-7-13 8941 Lassen Above Fredonyer Camp on road from Westwood to Susanville 1524 Comment
  RSA164415  Nemacladus capillaris Clare B. Hardham 1961-6-16 7450 Lassen Gold Run Creek south of Susanville. Comment
  SEINET10458443  Nemacladus rigidus Rupert C. Barneby 1943-6-15 Barneby 5765 Lassen Smoke Creek northeast of Viewland 1341 Comment
  JEPS107402  Nemophila parviflora var. austiniae Lowell Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC107265  Nemophila parviflora var. austiniae T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC606944  Nemophila parviflora var. austiniae L. Constance 1938-6-10 2324 Lassen 0.5 mi w Fredonyer Pass (junction of Crazy Harry and Westwood--Susanville Roads); w of Fredonyer Pass 1676 Comment
  NY1082721  Nemophila pedunculata N. H. Holmgren 1978-6-11 8911 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  UC1069207  Nemophila pedunculata A. Simontacchi 1940-5-21 759 Lassen 4.1 mi sse Blacks Mtn; Halls Flat Quad., Lassen National Forest, sse of Blacks Mtn Comment
  HSC22942  Nicotiana acuminata John Pratt 1970-6-27 46 Lassen 0.5 mi. E of Turtle Head 1220 Comment
  CHSC4841  Nicotiana attenuata R. Carter 1967-7-13 596 Lassen Collected behind water tank. Ca. 500 yds NE of Eagle Lake Biology Station on the e shore. 1524 Comment
  CHSC65361  Nicotiana attenuata Vernon H. Oswald; Lowell Ahart 1995-8-14 7182 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  JEPS118498  Nicotiana attenuata A. Holmen 23 August 2011 CA 320 -96 Lassen South US hwy 3959 to Termo, turn left onto Lassen Co. Rd 508 (Juniper Ridge Rd). Follow road for 8.5 miles and turn North. Travel 4 miles and take left fork. Travel across meadow (0.3 mi) and turn left. Follow road for 2.5 miles and park. (Note: Need landowner permission to access this site) 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
  HSC31754  Oenothera cespitosa var. marginata Donald Spalinger 1974-5-16 65 Lassen E of Hurlong in the Doyle Winter Deer Range 1220 Comment
  CHSC106678  Oenothera deltoides subsp. piperi Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC26139  Oenothera deltoides subsp. piperi Detzer; Sacks 1977-6-27 46 Lassen On bank along Hwy. 395, ca. 4 km w of Milford. 1386 Comment
  UC1186579  Oenothera deltoides subsp. piperi G. I. Stage and R. W. Thorp 1959-6-19 59 -113 Lassen 7.2 mi se Milford Comment
  NY998638  Oenothera deltoides var. piperi W. W. Eggleston 1911-9-3 7705 Lassen Vicinity of Doyle Station 1290 Comment
  UCR71445  Oenothera elata subsp. hirsutissima Barbara Ertter 1987-7-24 7304 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  CHSC9548  Onobrychis viciifolia R. Clicquennoi 1967-6-24 13 Lassen .2 mi w of main rd. 3 mi e of Eagle Lake Biological Station on rd. to Murrer's Meadow. 1554 Comment
  CAS-BOT-BC349945  Onopordum acanthium O. Havens 1963-8-9 s.n. Lassen P. S. Hall ranch, Doyle Comment
  HSC103620  Oreostemma alpigenum var. andersonii Thomas W. Nelson, Jane Nelson 1985-8-10 8015 Lassen Along north side of Silver Lake 1829 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
  CDA42001  Orobanche corymbosa T. C. Fuller 1980-8-5 20313 Lassen Along east side of Tuledad Road, 7.4 km. southeast of the campground on the east shore of Dodge Reservoir, northeast of Ravendale. 0 Comment
  UC1561410  Orobanche corymbosa subsp. corymbosa Barbara Ertter 1987-7-25 7315 Lassen Ca 27 air miles NW of Susanville, FR33N02 to Harvey Valley W of junction with FR33N04. Comment
  SD52193  Orthocarpus copelandii var. cryptanthus F. Stephens 1894-7-15 8115 Lassen Bunch Grass Spring Comment
  CHSC12936  Orthocarpus cuspidatus subsp. cryptanthus K. R. Stern 1974-6-26 5870 Lassen N margin of meadow on s side of Hwy. 44, 5.6 mi n of intersection with County Rd. A-21 to Westwood. Comment
  POM44256  Orthocarpus hispidus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1483840  Osmorhiza berteroi G. Schoolcraft 1979-8-2 178 Lassen Tule Mountain; top, Bureau of Land Management 2133 Comment
  NY404457  Oxytheca dendroidea subsp. dendroidea R. F. Hoover 1940-10-5 4676 Lassen Pass between Shaffer Mountain and Warren Peak Comment
  JEPS117577  Packera cana Lowell Ahart, John Dittes 2010-7-31 16990 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  HSC42421  Packera eurycephala Barbara Kelly 1977-8-8 548 Lassen Ash Creek Campground Comment
  HSC68931  Packera eurycephala Gary Schoolcraft 1980-6-5 251 Lassen N base of Snowstorm Mtn. 1585 Comment
  CAS-BOT-BC316858  Packera eurycephala var. eurycephala C. C. (Mrs.) Bruce 1898-6-1 2176 Lassen Shumway Comment
  UC187441  Packera streptanthifolia T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC10388  Paeonia brownii Margaret Williams; Steven Williams 1974-7-26 74- 2 -14 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  POM99654  Paeonia brownii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  SEINET10537847  Paeonia brownii Mary Susan Taylor 1982-8-27 Taylor 5053 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  SEINET10537860  Paeonia brownii Paul Gallian, David B. Dunn 1971-6-2 Gallian 503 Lassen 6 mi n of hallelujah hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC259612  Pascopyrum smithii James Jokerst 1983-7-25 1898 Lassen Near Madeline Plains 1614 Comment
  CHSC42176  Pascopyrum smithii C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. 2194 Comment
  JEPS94120  Pectocarya penicillata Vernon H. Oswald and Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  UC1258487  Pectocarya penicillata G. Schoolcraft 1980-5-8 231 A Lassen e Herlong; Bureau of Land Management 1219 Comment
  NY90883  Pedicularis attollens subsp. protogyna F. W. Pennell 1940-6-10 25771 Lassen Route 36. Road to Coppervale R. S., E of Westwood. Comment
  OBI75871  Pedicularis groenlandica Anthony Baniaga 2011-8-9 494 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  UC41744  Pedicularis groenlandica M. S. Baker and Frank Nutting 1894-7-12 Lassen Comment
  SD6613  Pedicularis semibarbata Mrs. R. M. Austin 1880-1 Lassen Dutch Hill Comment
  UC303057  Pellaea brachyptera Pearl Safford Lassen Susanville [uncertain locality] Comment
  HSC68837  Penstemon deustus Gary Schoolcraft 1979-6-26 97 Lassen Small peak N of Radeo Flat 1951 Comment
  POM203059  Penstemon deustus subsp. sudans J. T. Howell 1934-6-10 11880 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  CHSC93676  Penstemon deustus var. pedicellatus Lowell Ahart; John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  NY591825  Penstemon deustus var. pedicellatus F. W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1097.3 Comment
  CHSC5912  Penstemon gracilentus R. Gein 1946-6-24 Lassen McCoy Flat. Eagle Lake. 1645 Comment
  NY600715  Penstemon gracilentus B. J. Ertter 1988-7-25 7866 Lassen Ridge of Diamond Mountains ca. 1.5 miles east of Diamond Peak, ca. 10 airmiles due south of Susanville. 2255.5 Comment
  UC1483843  Penstemon gracilentus G. Schoolcraft 1979-7-3 110 Lassen 4.3 mi up the road from Observation Peak (near Curlleaf Mtn.); up rd from Obseration Peak, near Curlleaf Mtn. 2133 Comment
  UC1585967  Penstemon gracilentus Barbara Ertter 1988-7-25 7866 Lassen ca 10 air mi due s Susanville (ridge of Diamond Mts., ca 1.5 mi e of Diamond Peak, n face); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  HSC21014  Penstemon gracilentus M. T. Milligan 1964-7-16 142 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC1874751  Penstemon gracilentus Karl Vincent, Charlotte Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn.; Alng CA A1 at Eagle Lake Summit, ca. 7.6 mi N of jct. CA 36, ca 7 air mi NW of Susanville. 1932 Comment
  JEPS9341  Penstemon neotericus George W. Gillett 1953-7-13 272 Lassen Westwood Junction, Highway 36 Lassen National Forest, Westwood Junction, Highway 36 (open areas near road) 1562 Comment
  SEINET5329198 Image available Penstemon neotericus C. G. Gulling 1905-1 1543 Lassen Big Meadows Comment
  UC725482  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen w Westwood; w of Westwood 1524 Comment
  RSA257090  Penstemon newberryi Christopher Davidson 1974-7-23 2497 Lassen Lassen Volcanic Nat'l Park. Rd to Juniper Lake. 2134 Comment
  UC27480  Penstemon newberryi var. newberryi Milo S. Baker 1891-6 Lassen Silver Lake Comment
  UCD13228  Penstemon oreocharis Janet Browder 1973-6-3 78 Lassen Lassen CO. Eagle Lake Recreation Area, Day Camp. Grassy area by lake. Elevation 5100 feet. 1554 Comment
  CHSC12441  Penstemon roezlii Robert W. Severin 1969-6-20 4 Lassen 4 mi s of E. L. B. S. in Dean's Meadow. Comment
  CHSC4912  Penstemon roezlii A. E. Anderson 1967-6-24 27 Lassen Abundant in soil on roadside leading to Murrer's Meadow, 1 mi. east of junction of road to Eagle Lake Biological Station. 1554 Comment
  CHSC5913  Penstemon roezlii R. Gein 1946-6-26 Lassen Eagle Lake. Pine Creek bridge. 1584 Comment
  CHSC59571  Penstemon roezlii Mary Meyer 1980-5-20 524 Lassen Along ridge above Secret Creek. 1432 Comment
  NY641730  Penstemon roezlii R. G. Olmstead 1984-6-27 582 Lassen 10.3 miles east from U.S. 395 pm Rye Patch Canyon road. 1603.3 Comment
  NY650107  Penstemon roezlii A. J. Cronquist 1959-6-18 8483 Lassen 5 miles south of Adin Comment
  NY650137  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass 1615.4 Comment
  POM252932  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass. 1646 Comment
  POM44788  Penstemon roezlii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SEINET201570  Penstemon roezlii A. Cronquist, AH Holmgren 1959-6-17 8470 Lassen 50 mi SE of Susanville 1372 Comment
  CAS-BOT-BC239497  Penstemon rydbergii var. oreocharis Louella Bass 1973-5-29 EV 50 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC239504  Penstemon rydbergii var. oreocharis Louella Bass 1973-6-6 EV 100 Lassen Elysian Valley 1325 Comment
  NY650948  Penstemon rydbergii var. oreocharis H. D. D. Ripley 1943-6-13 5706 Lassen 8 miles south of Milford 1859.3 Comment
  NY651296  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219.2 Comment
  JEPS11507  Penstemon speciosus Milo S. Baker 1890-1 Lassen Honey Lake Valley Comment
  JEPS95972  Penstemon speciosus Vernon H. Oswald and L. Ahart 1999-6-9 9747 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
  UC1142999  Penstemon speciosus August L. Hormay 1934-6-30 Lassen Harvey Valley Lassen National Forest 1615 Comment
  CDA33279  Penstemon speciosus T. C. Fuller 1963-6-11 10665 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CAS-BOT-BC239662  Penstemon sudans John Thomas Howell 1977-6-22 52404 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  JEPS103201  Penstemon sudans G. Schoolcraft 1990-7-2 2101 Lassen top of Cold Spring Mountain 2130 Comment
  NY661805  Penstemon sudans J. T. Howell 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range Comment
  NY661807  Penstemon sudans B. J. Ertter 1987-6-16 7178 Lassen Skeedaddle Mountains on northeast side of Honey Lake, ca. 1 mile west of Hot Springs VABM 1828.8 Comment
  UC1012466  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36 w Susanville; w of Susanville 1371 Comment
  UC1561843  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains 1828 Comment
  UC2027337  Penstemon sudans Anthony Baniaga and R. Bomberger 2011-7-28 478 Lassen Lassen National Forest. Highway 36, ca. 1/4 mi E of Fredonyer Pass Winter OHV Parking Lot Fredonyer Pass quadrangle Comment
  SEINET5323638 Image available Penstemon sudans G. Schoolcraft 1998-7-8 2752 Lassen Along Hwy 139 about 3 mi. n. os Susanville. 1402 Comment
  CHSC49042  Penstemon venustus Vernon Oswald 1986-7-22 2219 Lassen Hwy. 36, ca. 1 mi ne of Fredonyer Pass. 1706 Comment
  NY763152  Penstemon venustus K. A. Vincent 1987-6-25 4436 Lassen Sierra Nevada, southeast side of Fredonyer Butte; along north side of CA 36 ca. 11.5 miles WSW of Susanville, east of Fredonyer Pass 1585.0 Comment
  NY763153  Penstemon venustus K. A. Vincent 1987-8-5 4500 Lassen Sierra Nevada, southeast side of Fredonyer Butte; along north side of CA 36 ca. 11.5 miles WSW of Susanville, east of Fredonyer Pass. 1585.0 Comment
  POM91106  Peraphyllum ramosissimum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles north. 1524 Comment
  CHSC91292  Perideridia bolanderi Lowell Ahart; John Dittes 2005-6-1 11916 Lassen Along a small wash, on the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  SEINET10545980  Perideridia bolanderi subsp. bolanderi Paul Gallian, David B. Dunn 1971-6-2 Gallian 464 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
  CHSC105250  Perideridia kelloggii Lowell Ahart; John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CAS-BOT-BC222762  Perideridia parishii Clare B. Hardham 1971-8-22 18397 A Lassen Diamond Mountain 2133 Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  CHSC6230  Persicaria amphibia J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  JEPS25529  Phacelia adenophora Rimo Bacigalupi with Lincoln Constance 1959-6-16 7143 Lassen US Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside road) 1341 Comment
  OBI48096  Phacelia adenophora Rhonda Riggins 1989-4-27 1643 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  POM266184  Phacelia adenophora J. T. Howell 1934-6-10 11898 Lassen Horse Lake Comment
  RSA38632  Phacelia adenophora P. A. Munz 1947-5-19 11872 Lassen 19 miles south of Ravendale. 1341 Comment
  UC614680  Phacelia adenophora L. Constance 1938-6-11 2329 Lassen Madeline Plains 1219 Comment
  UC708799  Phacelia adenophora Vesta Holt 1946-6-20 4 Lassen Grasshopper Valley Comment
  RSA83071  Phacelia adenophora Verne Grant, Alva Grant 1947-8-1 8225 Lassen On dike of irrigation ditch southwest of Madeline. Comment
  RSA715550  Phacelia bicolor L. Ahart, John Dittes 2005-6-1 11886 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  RSA22955  Phacelia bicolor Elmer I. Applegate 1934-5-4 8928 Lassen South of Secret Valley. 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
  UC107370  Phacelia bicolor var. bicolor T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  JEPS78146  Phacelia hastata Gary W. Zamzow 1972-7-19 89 Lassen Hwy 139 15 mi s Adin; Willow Creek campground 1524 Comment
  SJSU11244  Phacelia hastata J. W. Tilden 1960-6-27 1499 Lassen foot of Moonlight Rd, outskirts of Westwood 1524 Comment
  UC1537532  Phacelia hastata Gordon H. True 1936-6-27 566 Lassen Hot Spring Mountain 1676 Comment
  UC726924  Phacelia hastata A. A. Heller 1941-6-24 16192 Lassen 3 mi e Bieber Comment
  CDA40418  Phacelia hastata J. T. Howell 1934-7-8 12480 Lassen Champ s Flat. 0 Comment
  UCD120478  Phacelia hastata John Thomas Howell 1934-7-8 12480 Lassen Champ's Flat. Comment
  CHSC91193  Phacelia heterophylla subsp. virgata Lowell Ahart; John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction. 1512 Comment
  CHSC26178  Phacelia humilis J. P. Kroessig 1977-5-25 35 Lassen At Eagle Lake Biological Station, ca. 37 km nnw of susanville. 1570 Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  NY1057846  Phacelia humilis N. H. Holmgren 1980-7-4 9511 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  RSA427992  Phacelia humilis var. humilis Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  RSA516986  Phacelia humilis var. humilis Barbara Ertter, Gary Schoolcraft 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak. 2195 Comment
  CHSC48470  Phacelia inundata Vernon Oswald 1986-6-15 2114 Lassen Near Eagle Lake Biological Station. 1584 Comment
  CHSC26176  Phacelia linearis J. P. Kroessig 1977-5-23 36 Lassen Eagle Lake Biological Station ca 37 km nnw of Susanville. 1570 Comment
  CHSC59551  Phacelia linearis Mary Meyer 1980-5-20 Lassen Common along ridges above Secret Creek. 1432 Comment
  CHSC68751  Phacelia linearis Vernon H. Oswald; Lowell Ahart 1997-5-27 8526 Lassen Coyote Flat on Forest Route 38N04 4.9 mi northeast of Hwy.139. 1813 Comment
  RSA149122  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-16 16530 Lassen 0.8 mile west of summit of Big Valley Pass. Comment
  NY1056499  Phacelia lutea var. lutea M. J. Williams 1986-5-12 86- 21 --1 Lassen Smoke Creek Road, east of Highway 395 1448 Comment
  UC107462  Phacelia racemosa Mrs. R. M. Austin 1879-1 Lassen Eagle Lake Comment
  SEINET7926036  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  CAS-BOT-BC141447  Phacelia ramosissima var. eremophila H. D. Ripley; R. C. Barneby 1943-6-13 5691 Lassen Milford 1264 Comment
  NY1056748  Phacelia tetramera A. Tiehm 1986-5-12 10349 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CHSC64879  Phacelia thermalis Vernon H. Oswald; Lowell Ahart 1995-6-19 6902 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395. 1444 Comment
  RSA38633  Phacelia thermalis P. A. Munz 1947-5-19 11878 Lassen Highway 395, 4 miles south of Madeline. Comment
  RSA337279  Phacelia thermalis Noel Holmgren, Patricia K. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U. S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CAS-BOT-BC232852  Phlox David D. Keck; J. Clausen 1935-6-24 3744 Lassen 2 miles S of Ravendale Comment
  UC773891  Phlox gracilis L. R. Short and Wm. Gansberg 1936-6-2 S- 363 Lassen Burgess Spring Experimental Range Lassen Forest 1859 Comment
  JEPS29740  Phlox speciosa subsp. occidentalis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8495 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  JEPS69990  Phlox speciosa subsp. occidentalis Leland S. Smith 1918-5-12 922 Lassen Hayden Hill, s end of Modoc National Forest Modoc National Forest Comment
  RSA715978  Phlox speciosa subsp. occidentalis L. Ahart, John Dittes 2005-6-2 11928 Lassen about 1.4 miles 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. 1499 Comment
  CHSC71130  Phlox stansburyi Vernon H. Oswald; Lowell Ahart 1998-5-22 9114 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
  CHSC7764  Phlox stansburyi Beverley J. Wise 1969-4-10 93 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1237939  Phlox stansburyi John Weiler and A. P. Nelson May 26 1961-May 29 1961 61237 Lassen behind motel at Ravendale (on U.S. Hwy 395) Comment
  UCD55262  Phlox stansburyi Ellen Dean 2006-5-15 3060 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  CHSC48338  Phoenicaulis cheiranthoides Vernon Oswald 1986-5-28 2061 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  JEPS127162  Phoradendron bolleanum Lowell Ahart, John Dittes 2016-7-13 21136 Lassen 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at southern slope of Big Valley. Comment
  UC2013398  Phoradendron bolleanum Debra Valov 2012-6-19 1115 Lassen Bieber; of County Road A2 c. 2.5 mi east of Highway 299. Comment
  UC74048  Picrothamnus desertorum J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  CHSC60871  Pilularia americana Vernon H. Oswald; Lowell Ahart 1993-7-8 5648 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  CHSC6220  Pinus contorta subsp. murrayana P. Balch 1955-7-3 Lassen Eagle Lake Resort. 1615 Comment
  SEINET10859539  Pinus lambertiana Paulson 1970-7-21 PAULSON s.n. Lassen 28N 6 E-19 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
  CHSC60823  Plagiobothrys cognatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5626 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. On the bed of a branch of Pine Creek. 1737 Comment
  CHSC58837  Plagiobothrys cusickii Vernon H. Oswald; Lowell Ahart 1992-7-16 5113 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 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
  JEPS124383  Plagiobothrys cusickii Lowell Ahart, John Dittes 2015-7-13 20305 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS87184  Plagiobothrys cusickii Vernon H. Oswald and Lowell Ahart 1992-7-16 5113 Lassen between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir on s. side of Hwy. 44); Bridge Creek 1691 Comment
  RSA0035913  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2008-6-20 14914 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
  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
  CAS-BOT-BC224977  Plagiobothrys hispidulus Peter H. Raven; Otto T. Solbrig 1958-6-17 13286 Lassen Along US Highway 395, 1.8 miles S of Ravendale Comment
  JEPS121293  Plagiobothrys hispidulus Lowell Ahart 2013-7-22 18854 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
  JEPS87509  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1993-6-14 5510 Lassen ca 3 mi (air) w. Eagle Lake (junction of Lassen A1 (Eagle Creek Rd.) with Lassen A21 (32N02)) 1813 Comment
  JEPS88203  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1996-6-24 7861 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), w side of meadow 0.4 mi s of cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1609215  Plagiobothrys hispidulus Vernon H. Oswald and Lowell Ahart 1993-6-14 5510 Lassen ca 3 mi (air) w. Eagle Lake (junction of Lassen A1 (Eagle Creek Rd.) with Lassen A21 (32N02)) 1813 Comment
  UC1191065  Plagiobothrys mollis Robert Ornduff 1959-7-18 5060 Lassen 1 mi e Madeline (on road from Madeline to the Patterson Ranger Station); Modoc National Forest Comment
  UC1533150  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen w Ash Valley (along edge of Moll Reservoir); edge Moll Reservoir 1606 Comment
  RSA715627  Plagiobothrys scouleri var. cusickii L. Ahart, John Dittes 2005-6-1 11906 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  CHSC71079  Plagiobothrys tenellus Vernon H. Oswald; Lowell Ahart 1998-5-22 9093 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  RSA60317  Plagiobothrys tenellus E. K. Balls 1950-5-9 15950 Lassen 12 miles north of Doyle, Hwy 395. 1296 Comment
  SEINET10873743  Plagiobothrys tenellus Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 875 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  CAS-BOT-BC189615  Plagiobothrys torreyi Clare B. Hardham 1961-6-17 7509 Lassen Baxter Creek S of Susanville 1676 Comment
  CHSC7769  Plantago lanceolata Beverley J. Wise 1969-6-4 74 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  UCD124605  Plantago lanceolata P. B. Schultz 1967-7-11 70 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  UC1951081  Plectritis congesta subsp. brachystemon Debra Valov 2009-4-24 2009010 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  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
  CHSC7742  Plectritis macrocera Beverly J. Wise 1969-4-10 118 Lassen 2.8 mi. north of Susanville on Shasta Forest logging Rd #7-off Hwy 139. 1341 Comment
  UC1136987  Poa X fibrata George A. Fischer and Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat; Lassen Nat'l Forest 1737 Comment
  CAS-BOT-BC227203  Poa bulbosa Barbara T. Keller 1974-5-7 1265 Lassen Along highway 395 about 5 miles west of Hurlong, 1/4 mile south of Honey Lake Comment
  RSA115224  Poa compressa Beecher Crampton 1956-7-17 3736 Lassen Ca. 2.5 miles north of Emigrant Gap. 1372 Comment
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Apr 28 2013
  CAS-BOT-BC255128  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Long Valley, southern Warner Mountains, 3 miles E of Blue Lake 2133 Comment
  UCD90918  Poa cusickii Leo Whitney 1935-6-10 3214 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC77269  Poa cusickii subsp. cusickii G. Schoolcraft 1994-7-7 2351 Lassen About 1.5 miles NE of Red Rock Lake. 2042 Comment
  JEPS120878  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18780 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1533157  Poa cusickii subsp. cusickii G. Schoolcraft 1986-6-25 1644 Lassen 3 mi nw Termo 1615 Comment
  CAS-BOT-BC247319  Poa pratensis Louella Bass 1973-5-29 EU 67 Lassen Elysian Valley 1325 Comment
  CHSC91319  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  JEPS126508  Poa secunda Alejandro Brambila, Michael Dolan 2016-7-7 CA 320 -157 Lassen Ash Valley road 1 mi past Holbrook Reservoir. Comment
  RSA647529  Poa secunda Marion P. Harthill 1972-6-17 821 Lassen Madeline. 1677 Comment
  UC1924591  Poa secunda Debra Valov 2006-5-28 2006001 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1284 Comment
  UCD90275  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 miles W of Chester, rte 36. Comment
  UCD90454  Poa secunda L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Comment
  CAS-BOT-BC236251  Poa secunda subsp. juncifolia John Thomas Howell 1934-6-14 12172 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CAS-BOT-BC236253  Poa secunda subsp. juncifolia John Thomas Howell 1934-7-6 12459 Lassen Harvey Valley Comment
  JEPS123838  Poa secunda subsp. juncifolia Lowell Ahart, John Dittes 2015-7-14 20331 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC1024869  Poa secunda subsp. juncifolia Leo Whitney 1935-5-26 3157 Lassen 10 mi e Adin (Ash Creek) Comment
  UC188907  Poa secunda subsp. juncifolia Milo S. Baker Lassen Dixie Valley Comment
  UCD92368  Poa secunda subsp. juncifolia J. B. Davy 17-24 Jun 1897 s.n. Lassen Honey Lake Valley. Comment
  UCD92427  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 s.n. Lassen Near Fruit Grower's Supply Co., Camp 10. Comment
  UC1132880  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 734 Lassen 5.7 mi ssw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  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
  UC70958  Poa secunda subsp. secunda M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  UCD92017  Poa secunda subsp. secunda A. H. Shunk 1923-8-20 s.n. Lassen Madeline. Comment
  HSC68792  Poa wheeleri Gary Schoolcraft 1979-7-3 112 Lassen 4.3 mi. up Observational Lookout Rd. from Horne Ranch Rd. 2134 Comment
  UC1024806  Poa wheeleri Leo Whitney 1935-6-23 3287 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1143038  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Nat'l Forest 1859 Comment
  UCD91755  Poa wheeleri Leo Whitney 1935-6-13 3240 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC110774  Pogogyne floribunda Dean Wm. Taylor 2012-7-18 21276 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  UC1037339  Pogogyne floribunda Leo Whitney 1933-8-5 1902 Lassen Hall's Flat, ca. 25 miles west of upper end of Eagle Lake, Lassen National Forest. 1737 Comment
  UC1609361  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5669 Lassen ca. 5.4 mi. (air) n.w. Poison Lake (Halls Flat Rd. (33N18), 1.4 mi. s.-s.w. of Pittville Rd. (Lassen 111, 36N01), w. side of rd.) 1694 Comment
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  JEPS17614  Polemonium occidentale Rimo Bacigalupi 1955-7-20 5404 Lassen on grade 2.3 mi s Patterson Ranger Station ([and 0.8 mi s of Lassen-Modoc county line], meadowy spots along East Creek, southern end of the Warner Mountains); Modoc National Forest, Warner Mountains, East Creek 2011 Comment
  NY182333  Polyctenium fremontii H. D. D. Ripley 1944-5-30 5970 Lassen South of Ravensdale. 1691.6 Comment
  SEINET258241 Image available Polyctenium fremontii var. confertum Arnold Tiehm, Jan Nachlinger, Margaret Williams 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on Hwy. 295 from Susanville to Alturas. T30N R15E Sec 15 1350 Comment
  CHSC4777  Polygonum R. Carter 1967-6-27 556 Lassen Ca. 100 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  UC6645  Polygonum amphibium var. stipulaceum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  JEPS120904  Polygonum aviculare subsp. depressum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18735 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
  UC1136194  Polygonum bistortoides Robert W. Gardner 1937-6-20 G- 20 Lassen Burgess Spring Halls Flat Quadrangle Comment
  UCD33604  Polygonum californicum Beecher Crampton 1970-6-26 8637 b Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  CAS-BOT-BC414490  Polygonum douglasii John Thomas Howell 1974-7-10 50562 Lassen Elysian Valley 1325 Comment
  UC1567352  Polygonum douglasii subsp. austiniae G. Schoolcraft 1989-7-3 1946 Lassen Diamond Peak Diamond Mtsn. 2346 Comment
  CHSC60384  Polygonum douglasii subsp. douglasii Mary Ann Showers 1992-6-12 2528 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  JEPS117591  Polygonum douglasii subsp. douglasii Lowell Ahart, John Dittes 2010-7-31 16978 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
  UC1567376  Polygonum douglasii subsp. douglasii G. Schoolcraft 1989-6-19 1918 Lassen Ash Valley RNA/ACEC 1554 Comment
  CHSC25902  Polygonum douglasii subsp. spergulariiforme K. R. Stern 1967-7-1 2467 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC84438  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  UC1553395  Polygonum douglasii subsp. spergulariiforme G. Schoolcraft 1988-6-15 1814 Lassen 16 mi e Adin; Ash Valley RNA/AEC 1584 Comment
  CHSC59096  Polygonum minimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5178 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Locally abundant in an opening on the brushy edge of the meadow. 1950 Comment
  CHSC112396  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18732 Lassen Drainage filled with dirt form 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
  CHSC113013  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2013-7-23 18905 Lassen On the northwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS120876  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18732 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  RSA0045637  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area,, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  UC1191311  Polygonum polygaloides subsp. confertiflorum Herbert L. Mason Jul 29 1955-Jul 31 1955 14639 Lassen Pine Creek Flat Comment
  CAS-BOT-BC419910  Polygonum polygaloides subsp. kelloggii George W. Gillett 1957-7-28 939 Lassen Lassen Volcanic National Park. Widow Lake. 2072 Comment
  CHSC6231  Polygonum polygaloides subsp. kelloggii R. Gein 1946-6-12 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  JEPS87371  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald and Lowell Ahart 1993-8-3 5749 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor, e side of swamp); Cooper Swamp 1932 Comment
  UCD100647  Polygonum ramosissimum Verne Grant; Irving Schneider 1947-8-1 8227 Lassen Southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC506934  Polygonum sawatchense subsp. oblivium George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 Comment
  UCD100686  Polygonum spergulariiforme J. M. Tucker 1950-7-25 1976 Lassen 33 miles northwest of Susanville, on road from Pittville. Comment
  UC1024708  Polypogon monspeliensis Leo Whitney 1934-8-6 2136 Lassen Susan River Honey Lake Valley; , Honey Lake Valley 1371 Comment
  JEPS23859  Porterella carnosula Peter H. Raven with Otto T. Solbrig 1958-6-17 13294 Lassen along United States Highway 395, 4.8 mi s Madeline Comment
  UC1573183  Porterella carnosula Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9007 Lassen road from Bieber to Lookout 0.5 mi s Modoc County Line (Big Valley, Pit River Watershed); Pit River Watershed, Big Valley 1249 Comment
  SEINET10460817  Porterella carnosula Whitney 1933-8-21 WHITNEY s.n. Lassen In a water-hole near Hall's Flat, 25 miles W. NW. of Eagle Lake, Lassen National Forest Comment
  SEINET10460826  Porterella carnosula Gary Schoolcraft 1980-7-16 Schoolcraft 318 Lassen T38N R12ESE 1/4 Sec 23 Comment
  CHSC4838  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  JEPS97315  Potamogeton amplifolius Vernon H. Oswald 1995-8-26 7218 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UCD150403  Potamogeton crispus William Anderson 1963-7-9 s.n. Lassen Honey Lake Refuge. Comment
  CHSC4840  Potamogeton filiformis R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  POM118854  Potamogeton foliosus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET3892719  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field.; 0 1280 Comment
  CAS-BOT-BC267150  Potamogeton foliosus W. I. Follett; Seth Bertram Benson 1957-11-2 s.n. Lassen Tributary of Secret Creek, 1.1 miles N of Karlo Comment
  SEINET10704662  Potamogeton natans Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 146 Lassen Lassen National Forest. 1.3 mi. on Road 10 to Silver Lake off Road 110. 1963 Comment
  UC1100074  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8244 Lassen e end of Tule Lake Comment
  UC60850  Potamogeton zosteriformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3356 Lassen near Amedee; Honey Lake Valley Comment
  JEPS88679  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen along Ash Creek at the crossing of Ash Valley Road (Lassen County Road 527, Forest Road 39N08) Modoc Plateau, along Ash Creek, Ash Valley (Ash Valley) 1554 Comment
  CHSC68764  Potentilla biennis Vernon H. Oswald; Lowell Ahart 1997-5-27 8487 Lassen East side of Hwy. 139 at a small pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  UC1776675  Potentilla breweri G. Schoolcraft 1994-8-1 2390 Lassen About 2 miles W of Boot Lake 2456 Comment
  JEPS44188  Potentilla fruticosa Brown and Wieslander 1922-7-25 4 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  RSA123323  Potentilla glandulosa L. R. Short 1936-6-10 s- 425 Lassen [Unspecified] 1854 Comment
  JEPS121267  Potentilla gracilis var. flabelliformis Lowell Ahart, John Dittes 2013-7-23 18899 Lassen Along a small drainage, W of the road levee, about 100 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC4889  Potentilla millefolia L. G. Bennett 1967-7-17 166 Lassen 0.3 mi n of junction of Silver Lake Road and Hwy 44, on Hwy 44. 1975 Comment
  UC506926  Potentilla millefolia George A. Fischer and Irwin H. Johnson 1933-7-14 F. 240 Lassen Patterson R.S. Lassen National Forest, Patterson R.S. 1737 Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CHSC66401  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1996-6-17 7787 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  CHSC1579  Prunus andersonii A. Stone 1937-5-14 Lassen Honey Lake region. Comment
  JEPS94135  Prunus andersonii Vernon H. Oswald and Lowell Ahart 1998-5-22 9119 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 1.1 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1447 Comment
  SJSU14477  Prunus andersonii W. D. Pitts 1990-5-29 297 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  CHSC23523  Prunus emarginata Wayne O. Baum 1971-7-7 71 -83 Lassen N. slope of Gallatin Peak. 2011 Comment
  UC2013400  Prunus virginiana var. demissa Debra Valov 2011-6-16 1105 Lassen Bieber; off County A2 c. 8 km east of Highway 299. Comment
  UCD91501  Pseudoroegneria spicata Beecher Crampton 1954-7-5 2053 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UC718009  Pseudoroegneria spicata subsp. spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada 1341 Comment
  JEPS48629  Pseudostellaria jamesiana Hilda W. Grinnell 1934-6-1 Lassen top of divide 8 mi sw Susanville 1950 Comment
  SEINET5345382  Pseudotsuga menziesii var. menziesii D. A. Charlet, T. Charlet 1996-7-20 2300 Lassen Sierra Nevada; Diamond Mts, Upper East canyon (Milford Grade) 1770 Comment
  CHSC112453  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18756 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC113077  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes 2013-7-22 18872 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS119651  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2012-7-9 18290 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS96091  Psilocarphus oregonus Vernon H. Oswald and Lowell Ahart 1996-6-17 7794 Lassen Devils Corral Trailhead Modoc Plateau (shallow ditch just sw of parking area, located off Hwy 36 ca. 7 mi w, trailhead is access to Bizz Johnson Trail) 1420 Comment
  CDA27774  Psoralidium lanceolatum S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  HSC63951  Puccinellia distans Teresa Prendusi 1980-7-9 1114 Lassen Horse Camp Spring about 39 mi. N of Susanville. 1707 Comment
  UCD34874  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs rec. area. Comment
  UCD91531  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area. 1981 Comment
  UCD91859  Puccinellia distans Malcolm A. Nobs; S. Galen Smith 1949-7-22 1070 Lassen NE shore of Eagle Lake. Comment
  POM313139  Puccinellia distans Malcolm A. Nobs, S. Galen Smith 1949-7-22 1070 Lassen Northeast shore of Eagle Lake Comment
  CHSC93243  Puccinellia lemmonii John Dittes; Scott Chamberlain 2004-6-28 1015 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1445 Comment
  UCD93433  Puccinellia nuttalliana G. Schoolcraft 2000-6-12 2908 Lassen Cold Springs Reservoir at NE end of Madeline Plains. 1645 Comment
  UCD92258  Puccinellia simplex Leo Whitney 1935-3-2 3012 Lassen Rosamond Lake, Mohave Desert. Comment
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Apr 29 2013
  CDA26233  Purshia tridentata S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC109221  Purshia tridentata B. Castro; L. P. Janeway 2003-10-5 1460 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail betweenCone Lake and Triange Lade, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  CHSC13644  Purshia tridentata M. S. Taylor 1974-6-25 260 Lassen Surrounding meadow, ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC23564  Purshia tridentata W. O. Baum 1971-6-28 42 Lassen Along fire trail on e slope of Gallatin Peak. 1920 Comment
  CHSC5019  Purshia tridentata L. G. Bennett 1967-7-1 81 Lassen 4 miles from Eagle Lake Biological Station on road to Gallatin Beach. 1676 Comment
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  CAS-BOT-BC147821  Purshia tridentata var. tridentata Alice Eastwood; John Thomas Howell 1940-6-16 8341 Lassen Janesville Comment
  CAS-BOT-BC147823  Purshia tridentata var. tridentata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49161 Lassen Elysian Valley northwest of Janesville 1325 Comment
  HSC19580  Purshia tridentata var. tridentata Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  HSC19581  Purshia tridentata var. tridentata L. H. Myers 1963-4-5 29 Lassen W of Hwy. 395 near Janesville 1280 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
  JEPS28661  Pyrola asarifolia George W. Gillett 1957-7-22 880 Lassen Snag Lake, South shore near Campsite 1850 Comment
  UC477495  Pyrola picta A. G. Brenneis 1928-7-3 11 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  CAS-BOT-BC362265  Pyrrocoma carthamoides var. cusickii John Thomas Howell 1934-7-6 12453 Lassen Harvey Valley Comment
  CAS-BOT-BC362266  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  UC1136851  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range 1783 Comment
  CHSC115058  Pyrrocoma lucida Allison Sanger 2012-7-25 Lassen Lassen National Forest, Eagle Lake Ranger District. Near Road 28N38 just south of junction with Road 28N03, about 1.2 miles east of Mountain Meadows Reservoir. Sec. 31, SE1/4 of NE1/4 and Sec. 32 SW1/4 of NW1/4. 1554 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
  CAS-BOT-BC362319  Pyrrocoma racemosa var. paniculata John Thomas Howell 1951-8-20 28227 Lassen Honey Lake Valley near Herlong 1280 Comment
  UC1583970  Pyrrocoma racemosa var. paniculata G. Schoolcraft 1990-9-13 2129 Lassen upper end of Stoney creek Stoney Creek 1463 Comment
  JEPS37795  Quercus kelloggii W. L. Jepson 1939-8-11 19371 Lassen Milford 1280 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
  CHSC23897  Ranunculus aquatilis var. capillaceus George Ellmore 1973-7-7 7318 Lassen In bottom of Dixie Springs. 1581 Comment
  CHSC41844  Ranunculus aquatilis var. capillaceus P. V. Caldwell 1972-7-12 284 Lassen Floating on pools and on banks of Papoose Creek. Comment
  UC1537334  Ranunculus aquatilis var. capillaceus Gordon H. True Jr. 1936-6-21 515 Lassen Honey Lake Valley; in deeper sloughs 1219 Comment
  UC9368  Ranunculus aquatilis var. capillaceus M. S. Baker and Frank Nutting 1894-7-25 Lassen Eagle Lake 1524 Comment
  RSA0011456  Ranunculus aquatilis var. capillaceus Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46981 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  NY493018  Ranunculus aquatilis var. diffusus P. H. Raven 1958-6-19 13256 Lassen In a pond along United States Highway 395, 7.1 miles west of Standish Comment
  RSA152633  Ranunculus aquatilis var. hispidulus I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16347 Lassen In shallow stream about 10 miles E of Susanville Comment
  CHSC4982  Ranunculus cymbalaria R. Clicquennoi 1967-6-24 53 Lassen In meadow, 4 mi e of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 Comment
  CHSC27662  Ranunculus cymbalaria var. saximontanus Robert A. Schlising 1978-7-27 3320 Lassen E side of Eagle Lake. Pasture. Comment
  RSA523410  Ranunculus cymbalaria var. saximontanus Rodney H. True 1936-6-26 544 Lassen Honey Lake Valley- Willow Creek Valley Road. 1524 Comment
  CHSC7184  Ranunculus glaberrimus var. ellipticus Lynn R. Thomas 1969-4-17 100 Lassen Ca. 100 yds. w of Rice Canyon Rd., down hillside and just across small creek; 5 mi n of junction with 'Back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  UC1584003  Ranunculus occidentalis G. Schoolcraft 1990-5-15 2050 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  UC506988  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  RSA0062681  Ranunculus occidentalis Marion P. Harthill 1972-6-17 825 Lassen Madeline. 1676 Comment
  NY494767  Ranunculus occidentalis var. dissectus H. D. D. Ripley 1943-6-13 5682 Lassen Near Milford 1264.9 Comment
  SEINET208822  Ranunculus occidentalis var. eisenii J. Major 1966-6-24 s.n. Lassen Modoc National Forest ; Above Blue Lake Warner Mtns ca 18 air mi SE of Likely 1905 Comment
  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
  JEPS28453  Ranunculus uncinatus George W. Gillett 1957-7-28 926 Lassen on trail to Widow Lake 100 yd above junction with Snag Lake Trail; Lassen Volcanic National Park, Butte Lake 1859 Comment
  UC1523733  Rhamnus rubra Gary Schoolcraft 1981-7-21 544 Lassen ne of Pittville (along Hwy 299) 1249 Comment
  CAS-BOT-BC92389  Ribes aureum var. aureum Doris K. Kildale 1930-5-12 9358 Lassen Between Susanville and Leavitt Lake. Comment
  CAS-BOT-BC93390  Ribes cereum George W. Gillett 1957-7-26 916 Lassen Lassen Volcanic National Park. Butte Lake. 1844 Comment
  CHSC21360  Ribes cereum M. S. Taylor 1974-5-4 219 Lassen Scattered ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  JEPS49429 Image available Ribes cereum W. L. Jepson 1910-6-11 4118 Lassen base Cinder Cone 1889 Comment
  UC747359  Ribes cereum G. Thomas Robbins 1945-10-6 2149 Lassen summit Crater Lake Mt. (above lake); Lassen National Forest 2194 Comment
  UCR17281  Ribes cereum Frank C. Vasek 1975-7-11 750711- 30 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UC699688  Ribes hudsonianum var. petiolare J. L. Mielke, J. W. Kimmey 1941-6-29 Lassen Silver Creek (Lost Lake) Warner Mountains, Modoc National Forest Comment
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Jul 19 2010
  UCR55663  Ribes hudsonianum var. petiolare G. R. Ballmer 1988-7-19 s.n. Lassen Blue Lake, extreme S end of Modoc National Forest, c. 3 mi (airline) south of Modoc county line 1860 Comment
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Jul 20 2010
  RSA0023962  Ribes velutinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC363012  Rigiopappus leptocladus Doris Kildale Gillespie 1930-5-12 9341 Lassen 2 miles north of Susanville on road to Alturas Comment
  JEPS95976  Rorippa curvisiliqua Vernon H. Oswald and L. Ahart 1999-6-9 9758 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass: T29N R10E NW1/4 Sect. 22, 5400 ft elevation, mixed coniferous forest 1645 Comment
  CHSC66861  Rorippa curvisiliqua var. orientalis Vernon H. Oswald; Lowell Ahart 1996-9-10 8282 Lassen Mountain Meadows Reservoir SW of Westwood. On the embankment of the railroad along the northwest edge of the reservoir. 1539 Comment
  CHSC36472  Rorippa nasturtium-aquaticum Jeffrey R. Peek 1982-6-4 33 Lassen Ca. 50 yds along Willow Creek from its beginning in Murrers Upper Meadow. Comment
  CHSC75480  Rorippa nasturtium-aquaticum Vernon H. Oswald; Lowell Ahart 1999-6-9 9736 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395. In marsh. 1353 Comment
  UC1536933  Rorippa nasturtium-aquaticum Gordon H. True Jr. 1936-6-26 547 Lassen e Eagle Lake (head of Willow Creek); , e of Eagle Lake 1584 Comment
  SEINET10973519  Rorippa obtusa Mary Susan Taylor 1974-1 Taylor 278 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  NY182160  Rorippa sinuata G. Schoolcraft 1989-6-6 1901 Lassen North end of Secret Valley west of Hwy. 395. 1350.3 Comment
  NY758403  Rorippa sinuata N. H. Holmgren 1980-7-3 9478 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) air distance northwest of Termo 1620 Comment
  HSC93474  Rosa woodsii subsp. ultramontana Gordon Leppig, Tony LaBanca 1998-7-13 874 Lassen Modoc National Forest, Blue Lake Ranch. 1799 Comment
  CAS-BOT-BC148257  Rosa woodsii var. ultramontana George W. Gillett 1957-7-26 915 Lassen Butte Lake - Lassen Volcanic National Park 1844 Comment
  CAS-BOT-BC148360  Rubus leucodermis George W. Gillett 1957-7-26 914 Lassen Butte Lake - Lassen Volcanic National Park 1844 Comment
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS94540  Rubus parviflorus Vernon Oswald and Lowell Ahart 1997-6-24 8614 Lassen 0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43 1889 Comment
  CHSC27648  Rumex acetosella George Deniso 1978-7-16 74 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  CAS-BOT-BC433245  Rumex crispus Louella Bass 1973-6-15 EV- 108 Lassen Elysian Valley 1325 Comment
  NY324109  Rumex lacustris M. S. Baker 1894-1 s.n. Lassen Silver Lake [according to annotation by Rech. f.] Comment
  CHSC65317  Rumex occidentalis Vernon H. Oswald 1995-8-21 7210 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the marshy edge of the lake. 1859 Comment
  CAS-BOT-BC109329  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA. 1554 Comment
  UC1101217  Rumex salicifolius var. lacustris Verne Grant and Irving Schneider 1947-7-29 8183 Lassen e side Tule Lake Comment
  UC1136137  Rumex salicifolius var. lacustris E. Sawyer 1935-6-27 228 Lassen Long Valley Sierraville Quad. 1310 Comment
  CAS-BOT-BC434075  Rumex transitorius John Thomas Howell 1976-7-19 51959 Lassen Southwest of Susanville on Gold Run Road. 1341 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
  CAS-BOT-BC109417  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia. Comment
  UC568  Sagittaria State Geological Survey 1800-1 2189 Lassen Comment
  UC1051438  Sagittaria cuneata Herbert L. Mason 1955-8-13 14647 a Lassen Willow Creek Valley Comment
  UC935793  Sagittaria cuneata Calvin McMillan and Malcolm A. Nobs 1949-6-15 785 Lassen Nubieber Comment
  CAS-BOT-BC445674  Sagittaria cuneata Clarence R. Quick 1964-8-4 64 -102 Lassen Reservoir at Long's cabin between Black's Mt. and Experimental Forest 1783 Comment
  HSC2900  Sagittaria latifolia Fred J. Kindel 1955-6-30 Lassen Mtn. Meadows Reservoir. Comment
  CHSC96721  Salix arctica Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CHSC65007  Salix eastwoodiae Vernon H. Oswald 1991-8-5 4803 Lassen Little Willow Lake located near the south boundary of the park, ca. 2.5 miles (air) south-southeast of Drakesbad. 1844 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
  JEPS107443  Salix exigua Lowell Ahart, John Dittes 2005-6-1 11905 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS114626  Salix exigua Lowell Ahart, John Dittes 2008-6-22 15043 Lassen On the bottom of a deep ditch, on the south side of the road levee, open meadow area, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  SEINET3260830  Salix exigua Marcus E. Jones 1897-6-28 Lassen Susanville. 1340 Comment
  HSC26528  Salix lasiandra J. P. Smith, J. O. Sawyer 1972-5-6 5239 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  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
  JEPS78095  Salsola tragus Gary W. Zamzow 1972-7-18 84 Lassen beside Highway 395, 3 mi n Hallelujah Junction; n of Hallelujah Junction 1371 Comment
  UC1191402  Salsola tragus Verne Grant and Irving Schneider 1947-7-19 8080 Lassen s. of Alutras (in Pit Valley, Williams Ranch, along Southern Pacific right-of-way); Pit Valley, Williams Ranch Comment
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Jun 24 2009
  UCD125447  Salvia aethiopis L. Myler 1951-1 s.n. Lassen Exact location unknown. Comment
  UC1136751  Sambucus mexicana L. R. Short and J. Warren 1936-7-28 S- 490 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  RSA537728  Sambucus microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  JEPS5934  Sambucus racemosa var. microbotrys Frances D. Payne 1929-7-12 80 Lassen Lost Lake Warner Mountains (se extremity of mts.) 2286 Comment
  JEPS88210  Sanguisorba annua Vernon H. Oswald and Lowell Ahart 1996-6-17 7787 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at the Hwy 36 bridge spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  UC1924239  Sanguisorba annua Debra Valov 2004-6-8 2004245 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC30628  Sarcobatus vermiculatus T. M. Lane 1975-7-7 35 Lassen SE of Horse Lake Rd, on se shore of Horse Lake; 19 km nne of Susanville. 1508 Comment
  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
  HSC4526  Sarcobatus vermiculatus Fred J. Kindel 1955-7-14 Lassen Wendel, Hot Springs Comment
  SJSU14475  Sarcobatus vermiculatus W. D. Pitts 1990-5-29 298 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  UC1136501  Sarcobatus vermiculatus E. Sawyer 1935-6-27 216 Lassen Sierraville Quad., Long Valley Comment
  UCD101770  Sarcobatus vermiculatus Beecher Crampton 1960-6-19 5730 Lassen southeast of Karlo; along U.S. Hwy 395. Comment
  CHSC4972  Sarcodes sanguinea R. Carter 1967-6-22 536 Lassen ca 1/4 mi S of Five Corners on Peans Ridge Road. 1584 Comment
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Jan 31 2011
  UC70391  Sarcodes sanguinea Milo S. Baker 1890-4 Lassen Honey Lake Valley Comment
  UC1608991  Saxifraga nidifica var. nidifica Vernon H. Oswald and Lowell Ahart 1993-5-12 5388 Lassen 1.6 mi se of Pittsville Road (Hwy 44 between Poiston Lake and A21 (to Westwood)) 1719 Comment
  RSA59813  Saxifraga oregana E. K. Balls 1950-5-19 14771 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  RSA719709  Schoenoplectus pungens Michael A. Vincent, K. Levings 2006-7-29 12919 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  CHSC93678  Schoenoplectus pungens var. longispicatus Lowell Ahart; John Dittes 2005-6-2 11975 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
  JEPS78082  Scirpus acutus var. occidentalis Gary W. Zamzow 1972-7-18 88 Lassen beside Highway 395 16.8 mi s of the intersection with Highway 36; beside Highway 395 1280 Comment
  UC1100881  Scirpus nevadensis Verne Grant and Irving Schneider 1947-9-5 8376 Lassen nw shore Eagle Lake (by Sam Webb's place; Spaulding); nw shore Eagle Lake by Sam Webb's place Comment
  JEPS63795  Scirpus pungens W. L. Jepson 1918-8-2 7785 Lassen 1 mi below Boni Ranch house (lower bench of Long Valley Creek); Long Valley 1371 Comment
  UC1100818  Scirpus pungens Malcolm A. Nobs, S. Galen Smith 1949-8-20 1485 Lassen 1 mi n Doyle (marshy banks of Long Creek, Honey Lake Valley); Honey Lake Valley Comment
  SACT002079  Scribneria bolanderi Malcolm Nobs, Galen Smith 1949-5-29 Lassen Vernal meadowland. Marsh, on Great Northern Railroad, Highway 299, Nubeiber. Comment
  CAS-BOT-BC383106  Scrophularia lanceolata Andrew Townesmith; Karen M. Meyer 2007-7-20 837 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  JEPS29096  Scrophularia lanceolata Lauramay T. Dempster 1961-6-17 1674 Lassen ca 4 mi n of Karlo Rd junction with Hwy 395 1432 Comment
  NY415691  Scutellaria holmgreniorum N. H. Holmgren 1980-7-5 9524 Lassen 21.9 km (13.6 mi.) from U.S. Hwy. 395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale 1580 Comment
  RSA123264  Scutellaria nana L. R. Short, J. Warren 1935-6-23 S- 445 Lassen Lassen Forest, MDM, Burgess Spr. Exp. Range. 1809 Comment
  RSA201224  Scutellaria nana Clarence R. Quick 1964-8-1 64 -92 Lassen Cal Mt. east of Poison Lake. 1768 Comment
  UC1137689  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest, Lassen Forest and Range Experiment Station Lassen National Forest; , Lassen Forest and Range Experiment S 1722 Comment
  UC1549236  Scutellaria nana Richard Olmstead 1984-6-27 581 Lassen turnoff 14 mi s of Ravendale (10.3 mi e of US 395); Rye Patch Canyon Road 1603 Comment
  SEINET13947834 Image available Scutellaria nana Noel H. Holmgren, Patricia K. Holmgren 1980-1 9524 Lassen Upper Smoke Creek drainage, 21.9 km from US Hwy 395 via Rye Patch Canyon, 24 km airline distance SE of Ravendale; 1580 m alt., T33N, R16E, SEC36 1580 Comment
  CAS-BOT-BC240081  Secale cereale R. E. Frenkel 1964-7-12 664 Lassen On California Hwy. 299, 1.5 miles west of Bieber 1249 Comment
  CAS-BOT-BC240083  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16344 Lassen 13.5 mi. E. of Susanville Comment
  RSA152627  Secale cereale I. L. Wiggins, Dorothy Wiggins 1961-6-11 16342 Lassen On hillside 13.5 mi. of Susanville Comment
  UC1063252  Senecio aronicoides A. Simontacchi 1940-5-28 769 Lassen 9.3 mi nw Crater Lake; Halls Flat Quad. 1752 Comment
  CHSC114299  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 Lassen South of Adin; Hwy. 139 at Milepost 58. On both sides of the road. Comment
  JEPS17740  Senecio hydrophiloides Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5413 Lassen 4.4 mi s Patterson Ranger Station (in meadow e edge of Long Valley, s end of the Warner Mountains); Modoc National Forest, Warner Mountains, Long Valley 2057 Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC363855  Senecio integerrimus var. exaltatus A. M. Vollmer; L. Beane 1953-7-1 71 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC60723  Senecio integerrimus var. exaltatus Vernon H. Oswald; Lowell Ahart 1993-6-3 5480 Lassen Champs Flat Rd. (Lassen 105, 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake, on the S side of Pine Creek Valley, between Poison Lake and Susanville. Meadow. 1725 Comment
  CHSC64759  Senecio integerrimus var. exaltatus Vernon H. Oswald 1995-6-7 6843 Lassen High Cascade Range. Hwy 36, 5.5 mi e of Westwood. Along the se edge of McKenzie Mdws., on the n side of the road. 1584 Comment
  JEPS94603  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1997-5-27 8508 Lassen on Forest Route 38N04 0.3 mi e Hwy. 139 (n of Susanville (between Hwy 139 near Willow Creek Guard Station and Coyote Flat), between the road and a small creek) 1560 Comment
  SFV10993  Senecio serra J. Turner, F. M. Ball (1192) 1962-7-13 s. n. Lassen Laufman Public Camp, 3 miles off Highway 395 from Milford near Honey Lake. 1494 Comment
  UC36171  Senecio triangularis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 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
  CAS-BOT-BC205776  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC205779  Sidalcea oregana B. Bartholomew; B. Anderson 1988-7-22 4506 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  CHSC27642  Sidalcea oregana George Deniso 1978-7-21 88 Lassen Colman L., W shore, SE of Eagle L. 1962 Comment
  CHSC6184  Sidalcea oregana R. Gein 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 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
  RSA719898  Sidalcea oregana subsp. oregana Michael A. Vincent, K. Levings 2006-7-29 12906 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  UC506918  Silene bernardina George A. Fischer and Irwin H. Johnson 1933-7-14 F- 257 Lassen Lassen Forest 1783 Comment
  CAS-BOT-BC136279  Silene douglasii A. G. Brennels 1928-7-3 7 Lassen Lassen Forest, Jesson Valley 1463 Comment
  OBI75863  Silene douglasii Anthony Baniaga 2011-9-1 510 Lassen Lassen Natl Forest. W of Bailey Crk, along F.S. 10 Red Cinder quad. T29N R7E sec 3 SE of NE 1896 Comment
  UC1258485  Silene menziesii G. Schoolcraft 1980-7-28 336 Lassen s Blue Lake; s of Blue Lake 2072 Comment
  SJSU5887  Silene menziesii H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  RSA722689  Silene menziesii subsp. menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  CHSC89312  Silene nuda G. Douglas Barbe 1974-8-20 1936 Lassen Upper Long Valley. Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UC717968  Silene nuda David D. Keck 1944-7-8 5446 Lassen 2 mi e Westwood (in grassy meadow leading to Mountain Meadows Reservoir); Sierra Nevada, mdw leading to Mountain Meadows Reservoir 1524 Comment
  UCD18970  Silene nuda subsp. insectivora Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). 1700 Comment
  JEPS50951  Silene occidentalis subsp. occidentalis Brown and Wieslander 1922-7-23 32 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  CHSC112766  Sisymbrium altissimum Lowell Ahart; John Dittes 2013-7-23 18884 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET11572879  Sisymbrium altissimum M. J. Williams 1974-7-26 74 -L-33 Lassen 2 mi. W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  JEPS88552  Sisyrinchium bellum Vernon H. Oswald and Lowell Ahart 1996-6-24 7875 .1 Lassen ca 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, in meadow bordering Papoose Creek where it leaves the n end of the meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  JEPS117479  Solanum sarrachoides Lowell Ahart, John Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley 1276 Comment
  UCR67459  Solidago occidentalis George K. Helmkamp 1990-9-23 G- 10 Lassen north of Ravendale 1677 Comment
  UCD136093  Solidago velutina subsp. californica G. Schoolcraft 1994-8-29 2426 Lassen about 1 mile west of Susanville up Piute Creek. 1341 Comment
  CHSC113057  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2013-7-22 18846 Lassen West margin of a duck field, about 50 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS96089  Sparganium emersum subsp. emersum Vernon H. Oswald and Lowell Ahart 1996-6-24 7871 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow 1633 Comment
  UC309  Sparganium emersum var. emersum J. Burtt Davy Jun 17 1897-Jun 24 1897 397 Lassen sloughs of Susan River; Honey Lake Valley Comment
  CAS-BOT-BC213214  Sphaeralcea grossulariifolia P. Monnet 1913-7-1 803 Lassen Hot Spring Peak 1524 Comment
  CHSC93240  Sphaeromeria potentilloides var. potentilloides John Dittes; Scott Chamberlain 2004-6-28 1013 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-miles east of Plumas County line; meadow. 1445 Comment
  CAS-BOT-BC374759  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 1998-6-29 2319 Lassen Ash Valley along main road crossing Ah [Ash] Crk. 1554 Comment
  CAS-BOT-BC383109  Spiraea douglasii Andrew Townesmith; Karen M. Meyer 2007-7-20 840 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  JEPS128408  Spiraea douglasii Catherine Bauer with Ellen Bauer Benson 2017-8-16 16 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  OBI77204  Spiraea douglasii Anthony Baniaga 2011-8-10 515 Lassen Lassen NF. along Robbers Crk. Swain Mtn quad T29N R8E sec 35 NE of SW 1721 Comment
  SEINET10737171  Spiraea douglasii Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 840 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  UC773921  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spring Experiment Range Lassen Forest 1795 Comment
  UCD115760  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen near Karlo, about 12 miles north of Litchfield. 1356 Comment
  CAS-BOT-BC391079  Stellaria longipes subsp. longipes B. C. Cain 1925-8-24 69 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park Comment
  CAS-BOT-BC391143  Stellaria longipes subsp. longipes John Thomas Howell 1934-6-14 12149 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CDA24150  Stellaria longipes var. longipes Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-29 537 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC4785  Stellaria longipes var. longipes R. Carter 1967-6-29 574 Lassen In Murrer's Meadow, 100 yds. SE of dam. Comment
  CHSC5230  Stellaria longipes var. longipes P. Balch 1955-7-20 Lassen Eagle Lake. Roadside meadow 3 1/2 mi from Antelope lookout. 1676 Comment
  CHSC68737  Stenotus acaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8507 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. Between the road and a small creek paralleling the road on the north. 1560 Comment
  UC1037278  Stephanomeria lactucina Leo Whitney 1934-7-22 1747 Lassen 6 mi w Eagle Lake, lower end (near Antelope Mountain); Lassen National Forest 1889 Comment
  CAS-BOT-BC322921  Stephanomeria tenuifolia George W. Gillett 1957-7-26 901 Lassen Butte Lake, Lassen Volcanic National Park 1844 Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  UCR67447  Stephanomeria virgata George K. Helmkamp 1990-9-23 D- 8 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  OBI22293  Stipa webberi Robert F. Hoover 1940-9-29 4647 Lassen Pass between Shaffer Mt and Warren Peak Comment
  SEINET10973548  Streptanthus cordatus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17787 Lassen 6 mi. N. Of hallelujah jct on us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC519057  Streptopus amplexifolius Alice Eastwood 1912-8-22 1765 Lassen Trail to Sulphur Mine from Morgans, Lassen Butte Region Comment
  CHSC64784  Suaeda moquinii Vernon H. Oswald 1995-6-7 6835 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. Flat near the railroad. 1231 Comment
  CHSC63602  Subularia aquatica var. americana Vernon H. Oswald; John Ost, Mary Lou Mini 1994-8-6 6447 Lassen Caribou Wilderness along the west loop of the trail from the Hay Meadow to Long Lake. On the margin of a pond. 2065 Comment
  JEPS94613  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8488 Lassen e side of Hwy 139 at a small farm stock pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  CHSC12410  Symphoricarpos rotundifolius var. rotundifolius Lynn R. Thomas 1969-6-20 133 Lassen Road up Black Mt. N of Five Corners, ca. 3 mi S of E. L. B. S. 1706 Comment
  CHSC66381  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald; Lowell Ahart 1996-6-17 7801 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. 1420 Comment
  UC1536787  Symphoricarpos rotundifolius var. rotundifolius G. H. True 1936-6-27 553 Lassen just below summit of Hot Springs Mt. 1981 Comment
  CHSC76081  Symphyotrichum ascendens Lowell Ahart; Vernon H. Oswald 1999-9-13 8230 Lassen Along the south side of the dirt road, Willow Creek is on the south side of the road, about 250 yards east of the sign-in station along Highway 139, Willow Creek Wildlife Area. 1463 Comment
  SEINET1906280  Symphyotrichum ascendens Barbara Ertter 1987-1 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; 1524 Comment
  UC1561922  Symphyotrichum campestre Barbara Ertter 1987-7-25 7311 a Lassen 22 airmiles nw of Susanville; Pine Creek Valley 1737 Comment
  UC2027325  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen National Forest. Caribou Wilderness; N of Long Lake. Red Cinder quadrangle. Comment
  CAS-BOT-BC98934  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1917 Lassen Battle Creek Meadows - Lassen Butte Region Comment
  UC1523744  Symphyotrichum frondosum Gary Schoolcraft 1981-8-11 563 Lassen Said Valley Reservoir 1630 Comment
  UCD54543  Symphyotrichum frondosum Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2726 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1246 Comment
  CAS-BOT-BC97918  Symphyotrichum frondosum G. D. Hanna 1958-9-20 s.n. Lassen Cold Spring - Eastern Lassen Co. Comment
  SEINET10617707  Taraxacum californicum David B. Dunn, Billy Joe Cox 1971-1 Lassen Comment
  CHSC117508  Taraxacum officinale Lowell Ahart; John Dittes 2016-7-13 21112 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at southern slope of Big Valley. 1289 Comment
  CHSC7643  Taraxacum officinale Beverley J. Wise 1969-3-4 30 Lassen 0.5 mi. north of Susanville on Hwy 139. 1310 Comment
  CHSC30556  Taraxia subacaulis Sori H. Shad 1970-6-26 15 Lassen Collected in Deans Meadow. 1828 Comment
  UC1776673  Taraxia subacaulis G. Schoolcraft 1993-6-10 2288 Lassen N of Clark's Valley Road E of Red Rock Lake 1828 Comment
  CHSC84872  Taraxia tanacetifolia Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 353 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  CHSC91182  Taraxia tanacetifolia Lowell Ahart; John Dittes 2005-6-1 11856 Lassen In the center 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
  JEPS107459  Taraxia tanacetifolia Lowell Ahart, John Dittes 2005-6-1 11856 Lassen In the center 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
  JEPS94547  Taraxia tanacetifolia Vernon Oswald and Lowell Ahart 1997-6-24 8623 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52, 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  SBBG20782  Taraxia tanacetifolia A. I. Richardson 1961-5-31 11 Lassen near Seaid Valley Reservoir Comment
  UC20508  Taraxia tanacetifolia Mrs. C. C. Bruce June 1898 2203 Lassen Susanville Comment
  UCSB12577  Taraxia tanacetifolia Dearing, Hugh; Dearing, Margaret 1938-6-30 Lassen 40 miles west of Susanville Comment
  CAS-BOT-BC329047  Tetradymia canescens Elmer I. Applegate 1897-6-4 3034 Lassen Madeline Plains Comment
  CHSC50825  Tetradymia canescens Vernon Oswald; Lowell Ahart 1990-7-25 4398 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. Roadside bank. 1463 Comment
  UC1562341  Tetradymia canescens Vernon Oswald and Lowell Ahart 1990-7-25 4398 Lassen 2.2 mi w Hwy 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  SJSU5619  Tetradymia canescens V. Hardham 1965-7-13 139 Lassen Pit R Falls 1066 Comment
  CAS-BOT-BC340063  Tetradymia glabrata P. Monnet 1913-7-1 801 a Lassen Hot Springs Peak 1828 Comment