Search Results — 2000 specimen records retrieved (1590 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA19020  Abies concolor Mark Lubinski 2000-10-12 PDR 1103214 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36, ~5 mi W of Susanville. 0 Comment
  CDA19039  Abies concolor Mark Lubinski 2000-10-12 PDR 070105 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36. 0 Comment
  CHSC23488  Abies concolor Wayne O. Baum 1971-7-16 71 -73 Lassen E. slope of Gallatin Peak. 2072 Comment
  RSA759629  Abies concolor Doug Goldman 2004-11-6 2940 Lassen Along the east side of Forest Road 32N08, about 2.6 miles east of the intersection with Route 44. Crater lake Mountain, Lassen National Forest. 1811 Comment
  CAS-BOT-BC331636  Acer macrophyllum Louella Bass 1973-5-29 EU 51 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC28647  Achillea millefolium John Thomas Howell 1976-7-19 51958 Lassen SW of Susanville on Gold Run Road 1341 Comment
  CAS-BOT-BC28648  Achillea millefolium Louella Bass 1973-5-29 72 Lassen Elysian Valley 1325 Comment
  CHSC23526  Achillea millefolium Wayne O. Baum 1971-7-20 71 -53 Lassen N. slope of Gallatin Peak. 2011 Comment
  CHSC4909  Achillea millefolium A. E. Anderson 1967-7-1 67 Lassen Along fence n of road to Murrer Ranch, 1 mi. from ranch buildings. 1371 Comment
  JEPS127717  Achillea millefolium Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -172 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  JEPS36915  Achillea millefolium Brown and Wieslander 1922-7-30 18 Lassen meadow near Martin Springs; Eagle Lake Comment
  RSA129148  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen Near Johnstonville. 1280 Comment
  UC1131573  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen near Johnstonville; Susanville Quadrangle Comment
  UC593529  Achnatherum hymenoides E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1745 Lassen e-facing slope of gully in mountain above Red Rock 1420 Comment
  UCD50358  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  CAS-BOT-BC210662  Achnatherum lemmonii John Thomas Howell 1976-7-20 52004 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  SEINET249775 Image available Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UC1137653  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson F 198 Lassen Grass Valley Lassen National Forest 1696 Comment
  UCD37477  Achnatherum lemmonii Beecher Crampton 1960-6-18 5717 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UCD50546  Achnatherum lemmonii A. H. Shunk 1923-1 11 Lassen Bogard Ranger Sta., Lassen County, California. Comment
  CAS-BOT-BC216801  Achnatherum occidentale David D. Keck 1944-7-8 5451 Lassen 1.5 miles W of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  CHSC68888  Achnatherum occidentale subsp. californicum Vernon Oswald; Lowell Ahart 1997-6-24 8600 Lassen South of Susanville on the north side of Diamond Mtn. On forest Rd. 29N43, 1.2 miles east of Gold Run Rd. 1685 Comment
  UCD51136  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-18 3262 b Lassen Logan Mountain, 13 miles north of Lassen Peak, Lassen National Forest. 1981 Comment
  UCD51224  Achnatherum occidentale subsp. pubescens A. A. Beetle 1944-8-17 3040 Lassen 8 miles northeast of Susanville. Comment
  SEINET229581 Image available Achnatherum thurberianum Gary Schoolcraft 1982-6-22 722 Lassen North end of Fort Sage Mountains Comment
  SEINET235298 Image available Achnatherum thurberianum R. B. Turner 1980-5-18 Lassen Hwy 139 1 miles N of Susanville. 1463 Comment
  UCD51423  Achnatherum thurberianum Beecher Crampton 1964-6-27 7091 Lassen 21 miles north of Susanville, north end of Eagle Lake, B.L.M. Bucks Bay allotment. 1676 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD55295  Achnatherum thurberianum Ellen Dean; Gary Schoolcraft 2006-5-16 3116 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  UC1037345  Achnatherum webberi Leo Whitney 1935-7-3 3587 Lassen Ashurst Mt. Comment
  CHSC27639  Acmispon americanus var. americanus George Deniso 1978-7-16 77 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  CHSC30612  Acmispon denticulatus L. Maslin 1975-7-1 12 Lassen On the road to Lower Dry L. from Eagle Lake Field Station, 2 mi. ELFS. 1524 Comment
  OBI75866  Aconitum columbianum subsp. columbianum Anthony Baniaga 2011-8-9 490 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  CAS-BOT-BC391607  Actaea rubra John Thomas Howell; Gordon H. True 1973-8-1 50164 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC112436  Aegilops cylindrica Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18787 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  SEINET4339237  Aegilops triuncialis G. Schoolcraft 1997-6-26 2603 Lassen 1.2 mile north of Susanville, west of Highway 395 1326 Comment
  CAS-BOT-BC383114  Agastache parvifolia Andrew Townesmith; Karen M. Meyer 2007-7-22 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44 1971 Comment
  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
  CHSC57190  Agastache parvifolia Mary Meyer 1980-7-1 Lassen In lava flow on side of road running west at the south end of McCoy Flat. 1645 Comment
  CHSC9544  Agastache parvifolia L. E. Ray 1967-6-25 53 Lassen Coll. ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  JEPS126482  Agastache parvifolia Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -055 Lassen At Fredonyer Peak. Comment
  JEPS85818  Agastache parvifolia Roy E. Buck 1989-10-5 1419 Lassen wnw-facing slope of ridge overlooking n end Eagle Lake (ca 1.8 air km sw of Fredonyer Paek summit, 28 air km n of Susanville); overlooking n end Eagle Lake, sw of Fredonyer Peak 2115 Comment
  SEINET10814664  Agastache parvifolia Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44. 1971 Comment
  UC1124436  Agastache parvifolia A. Simontacchi 1940-6-30 915 Lassen 8.6 mi w Burgess Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  POM70458  Agastache urticifolia Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC104571  Agastache urticifolia F. Stephens 1894-7-15 Lassen Madeline Divide Comment
  CAS-BOT-BC30239  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen West of Janesville Comment
  JEPS62630  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen w of Janesville; Sierra Nevada Comment
  UC1037267  Ageratina occidentalis Leo Whitney 1933-8-27 1797 Lassen 14 mi w Eagle Lake (Harvey Lookout); Lassen National Forest, Harvey Valley 2225 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
  JEPS29231  Agoseris heterophylla Lauramay T. Dempster 1961-6-17 1671 Lassen s, 4 mi sw of junction of Gold Run Creek and Richmond Road Susanville; Gold Run Creek Comment
  CAS-BOT-BC433230  Agoseris heterophylla K. L. Chambers; Peter G. Dorris 1963-5-11 s.n. Lassen Red Rock Road, just east of Hwy. 395 (and just w. of Nevada State Line), ca. 10 mi. n. of Hwy. 70 junction, and s. of Constantia. Comment
  SEINET6738695 Image available Agoseris heterophylla M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 80- 19 -1 Lassen Smoke Creek Rd., 0.1 mile E of Hwy 395 1372 Comment
  UCD107495  Agoseris monticola Tim Kuhn 2006-7-18 41 Lassen Eagle Lake Ranger District.. Comment
  UC584270  Agoseris parviflora G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2325 Lassen about 1 mi below summit Black Mt. 1940 Comment
  UC585114  Agoseris parviflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1793 Lassen about 2 mi n Madeline 1363 Comment
  UC773952  Agoseris parviflora L. R. Short and J. Warren 1936-6-5 S- 372 Lassen Burgess Spring Experiment Range Burgess Spring Experiment Range 1798 Comment
  UC1776674 Image available Agoseris parviflora G. Schoolcraft 1994-7-7 2365 Lassen About 1 miles west of Boot Lake 219 Comment
  CHSC36498  Agoseris retrorsa Theresa Costa 1982-6-2 28 Lassen Ca. .6 mi W jct forest service rds 5.16 and 5.17, ca. 10 yd E 5.16 heading over Black Mtn. Comment
  CAS-BOT-BC127582  Agropyron cristatum Margaret Williams 1974-8-4 74- 4 -78 Lassen Sierra Nevada. Burned area near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  SEINET3915762  Agropyron cristatum LeDoux, Dunn 1973-5-24 859 Lassen Collected at jct. of Hwy. 70&395 at Arco Station.; 0 Comment
  CHSC50848  Agropyron desertorum Vernon Oswald; Lowell Ahart 1990-7-25 4396 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 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
  SEINET10509727  Agropyron desertorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 484 Lassen 5 mi s of milford near honey lake on us hwy 395; along roadside in grass Artemesia tridentata assoc; quercus jeffery pine on mtn range to west at Approximately the same altitude. 1250 Comment
  SEINET13680062  Agropyron desertorum J. R. Reeder, C. G. Reeder 1981-5-20 7350 Lassen 3.5 km NNW of Janesville. above Long Valley 1250 Comment
  SEINET12950845  Agrositanion saundersii B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11518 Lassen Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat.; 41.08261 -120.34968 1692 Comment
  UC1137133  Agrostis alba August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest, Bogard Ranger Station Comment
  CAS-BOT-BC127238  Agrostis exarata Malcom A. Nobs; S. Galen Smith 1949-7-21 1057 Lassen 4 miles north of Madeline. 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
  UCD108003  Agrostis stolonifera Tim Kuhn 2006-7-25 57 Lassen Eagle Lake Ranger District. Comment
  POM75113  Aliciella lottiae Marcus E. Jones 1897-6-24 9872 Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 Comment
  CHSC7661  Allium acuminatum Beverley J. Wise 1969-5-18 138 Lassen 17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  HSC81650  Allium acuminatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6026 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  POM110306  Allium acuminatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  SEINET194965  Allium acuminatum A. A. Heller 1938-1 Lassen 0 Comment
  UC1299748  Allium acuminatum Freed W. Hoffman 1946-6-9 739 Lassen on Highway 395 about 10 mi s Alturas; Dry Creek Comment
  RSA367043  Allium amplectens Anstruther Davidson s.n. Lassen [No locality information provided] Comment
  SEINET222604 Image available Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Hwy 395, 3 mi. S of Ravendale. Comment
  CHSC64812  Allium atrorubens var. atrorubens Vernon H. Oswald 1995-6-7 6836 Lassen Modoc Plateau, on N side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi E of Wendel, NE of Susanville. 1237 Comment
  RSA487942  Allium atrorubens var. atrorubens A. Tiehm, J. Nachlinger 1988-6-2 11702 Lassen South side of Shaffer Mountain, 3.4 miles north of the Wendel road on Hwy 395 from Susanville to Alturas, west of the highway. 1387 Comment
  RSA367053  Allium bisceptrum Rockwell 1925-01 s.n. Lassen Eagle Lake. Comment
  CAS-BOT-BC459452  Allium bisceptrum David D. Keck; J. Clausen 1935-6-25 3767 Lassen 2 miles W of Westwood on road to Chester at county line. 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
  SEINET3884275  Allium campanulatum Mary Merello, H. H. Schimdt; L. Woodruff 1993-6-27 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94.; 0 1700 Comment
  UC1133790  Allium campanulatum A. Simontacchi 1940-7-1 935 Lassen 2.6 mi ssw Puls Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1133851  Allium parvum A. Simontacchi 1940-5-17 735 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS47583  Allium platycaule Hilda W. Grinnell 1934-6-1 Lassen 8 mi sw Susanville 1950 Comment
  UC119983  Allium platycaule T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS94536  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1997-6-24 8604 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 (29N10)); Diamond Mountain, Forest Road 29N43 1655 Comment
  UC106708  Allophyllum integrifolium T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CDA40010  Allophyllum integrifolium T. C. Fuller 1963-7-15 10889 Lassen Road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  CAS-BOT-BC171316  Alnus incana subsp. tenuifolia John Thomas Howell; Gordon H. True 1973-8-1 50223 Lassen Headwaters of Boxter Creek, Canadian Zone forest, E slope of Diamond Range s of Susanville. Sierra Nevada Comment
  UC1586110  Alnus incana subsp. tenuifolia Barbara Ertter 1988-7-25 7868 Lassen ridge of mts. ca 1.5 mi due e Diamond Peak (n face, ca 10 air mi due s of Susanville); Diamond Mts. 2255 Comment
  RSA0011565  Alopecurus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46987 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CHSC58861  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1992-7-16 5108 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 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
  UCD55871  Alopecurus aequalis Beecher Crampton 1964-6-27 7097 Lassen ca. 8 miles southeast Ravendale B.L.M. Spanish Springs- Shinn Mountains Resource Conservation area. 1981 Comment
  CHSC99293  Alopecurus geniculatus Lowell Ahart; John Dittes 2008-6-20 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1130817  Alopecurus geniculatus A. Simontacchi 1940-5-17 745 Lassen 5.9 mi. s. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CHSC91330  Alopecurus pratensis Lowell Ahart; John Dittes 2005-6-1 11868 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  SEINET5340064  Alyssum desertorum M. J. Williams, A. Tiehm, J. Nachlinger 1988-6-2 88- 27 -4 Lassen Hwy 395, 0.4 mile E of Susanville road after turn to Alturas. Comment
  CHSC64769  Alyssum minus subsp. micranthum Vernon H. Oswald 1995-5-31 6804 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  CDA3617  Alyssum minus var. micranthum Vernon H. Oswald & Lowell Ahart 1998-6-4 9144 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. Comment
  JEPS93815  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1998-6-4 9144 Lassen s of Constantia (at parking area at end of spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  CDA23696  Amaranthus blitoides S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC115589  Amaranthus blitoides Lowell Ahart; John Dittes 2015-7-14 20324 Lassen On the edge of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1264 Comment
  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
  CHSC77181  Ambrosia acanthicarpa G. Schoolcraft 1998-9-14 2809 Lassen Flats N of Turtle Point. 1264 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
  UCR67435  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CHSC1536  Amelanchier pallida V. Holt 1935-5-31 Lassen Near Susanville. 1584 Comment
  RSA38467  Amelanchier pallida Philip A. Munz 1947-5-19 11859 Lassen Fredonyer Forest Camp Ground on Hwy 36 W of Susanville. 1509 Comment
  SBBG14885  Amelanchier utahensis A. I. Richardson 1961-5-30 8 Lassen S of Eagle Lake 1402 Comment
  UC12072  Amelanchier utahensis Mrs. R. M. Austin and Bruce Jun 1898 2338 Lassen Comment
  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
  SEINET9183301  Amphiscirpus nevadensis R. R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CHSC91325  Amsinckia intermedia Lowell Ahart; John Dittes 2005-6-1 11878 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  RSA0089911  Amsinckia menziesii L. Ahart 2005-6-1 11899 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  JEPS114653  Amsinckia menziesii var. 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
  UC726761  Amsinckia menziesii var. menziesii A. A. Heller 1941-6-24 16190 Lassen 1 mi e Bieber (along the highway) Comment
  JEPS107401  Amsinckia tessellata var. tessellata Lowell Ahart, John Dittes 2005-6-1 11881 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1470 Comment
  UCD159579  Anaphalis margaritacea D. S. Park 2011-8-24 316 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  CAS-BOT-BC45257  Ancistrocarphus filagineus B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6562 Lassen US Highway 395, 6.0 km N of railroad crossing and 20.1 km N of Litchfield. 1330 Comment
  CHSC117217  Ancistrocarphus filagineus Lowell Ahart; John Dittes 2016-6-7 21000 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
  CAS-BOT-BC45258  Ancistrocarphus filagineus H. D. Ripley; R. C. Barneby 1944-5-30 5862 Lassen North of Viewland 137 Comment
  CHSC5194  Antennaria argentea A. Santos 1946-6-14 Lassen Spalding's, Eagle Lake. 1558 Comment
  CHSC66232  Antennaria argentea Vernon H. Oswald; Lowell Ahart 1996-6-24 7837 Lassen Forest Rd. 31N63 ca. 0.2 mi S of the spur road to the cabins at Papoose Mdws., ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1644 Comment
  SEINET3145644  Antennaria argentea M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  CHSC108021  Antennaria dimorpha Lowell Ahart; John Dittes 2011-6-20 17508 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1137664  Antennaria dimorpha L. R. Short 1936-6-8 S- 386 Lassen Burgess Spr. Exp. Range Lassen National Forest, Thompson Meadow 1743 Comment
  CAS-BOT-BC59218  Antennaria dimorpha Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  JEPS117487  Antennaria geyeri Lowell Ahart, John Dittes 2010-7-31 16974 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
  RSA416687  Antennaria geyeri J. T. Howell 1934-7-9 12520 Lassen Pine Creek Flat 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
  SEINET3145605  Antennaria geyeri M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  CAS-BOT-BC58688  Antennaria luzuloides Louella Bass 1974-6-2 EV 135 Lassen Elysian Valley 1325 Comment
  HSC82217  Antennaria luzuloides Thomas W. Nelson, Jane P. Nelson 1980-7-6 6000 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC380912  Antennaria luzuloides Marcus E. Jones, A. M. 1897-6-18 Lassen Chat 1524 Comment
  UC1523746  Apera interrupta Gary Schoolcraft 1981-6-8 618 Lassen s of Beaver Creek 1249 Comment
  JEPS49800  Apocynum androsaemifolium Brown and Wieslander 1922-7-17 3 Lassen Eagle Lake, Martin Springs Comment
  JEPS49803  Apocynum androsaemifolium Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  UC1123464  Apocynum androsaemifolium H. P. Hagge 1929-9-12 28 Lassen Logan Mt. Eagle Lake Quad., Logan Mt. Comment
  UC1123490  Apocynum androsaemifolium A. Simontacchi 1940-8-5 930 Lassen 4.2 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CAS-BOT-BC392211  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  CHSC30563  Aquilegia formosa Sori H. Shad 1970-6-26 3 Lassen Found in Murrer, S upper Meadow in a silty soil. 1584 Comment
  CHSC30594  Aquilegia formosa Marc Held 1972-7-7 41 Lassen Collected on the roadside above Gallatin Beach. 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
  SEINET10480699  Arabis Mary Susan Taylor 1982-5-7 Taylor 4425 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  RSA0129285  Arabis holboellii var. pinetorum R. C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake. Comment
  HSC82265  Arabis holboellii var. retrofracta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5992 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS28468  Arabis rectissima var. rectissima George W. Gillett 1957-9-4 1123 Lassen about 1/8 mi below Widow Lake (Widow Lake Trail); Lassen Volcanic National Park 2011 Comment
  NY119565  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  NY119564  Arabis sparsiflora var. sparsiflora D. W. McNeal 1983-6-5 2842 Lassen Above co. rd. #201 above the N shore of Eagle Lake, 2.9 miles W of the jct. of Hwy. 139. Comment
  NY119619  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81179 Lassen About three miles north of Eagle Lake Comment
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  CDA6787  Arctium minus T. C. Fuller 1959-7-7 4725 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  RSA38477  Arctostaphylos manzanita subsp. manzanita P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1509 Comment
  CHSC72309  Arenaria aculeata L. P. Janeway; Glenn Clifton 1998-7-9 5738 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  JEPS28438  Arenaria congesta var. congesta George W. Gillett 1957-7-29 945 Lassen Along trail between Butte Lake Snag Lake; Lassen Volcanic National Park 1859 Comment
  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
  UC465891  Arenaria congesta var. subcongesta Franklin P. Nutting Lassen Dixey Valley Comment
  UC1249269  Arenaria congesta var. subcongesta Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8463 Lassen 50 m se Susanville Comment
  CAS-BOT-BC401655  Argemone munita subsp. munita John Thomas Howell 1955-7-19 30816 Lassen East side of Beckwourth Pass 1493 Comment
  CAS-BOT-BC401792  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3545 Lassen Hills north of Susanville Comment
  CAS-BOT-BC82113  Arnica chamissonis B. Bartholomew; B. Anderson 1988-7-22 4498 Lassen Mosquito Creek ca. 2 km SW of patterson Meadow, southern end of the Warner Mountain 2080 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
  CHSC5195  Arnica chamissonis J. Wolf 1946-6-20 Lassen Grasshopper Valley. 1624 Comment
  CHSC60873  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1993-7-8 5665 Lassen Pittville Rd. (Lassen 111, 36N01) 2.4 mi N of Hwy. 44, on the NE edge of Poison Lake. 1705 Comment
  JEPS35887  Arnica chamissonis Brown and Wieslander 1922-7-30 26 Lassen Martin Springs , Eagle Lake Comment
  POM203853  Arnica chamissonis subsp. foliosa J. T. Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  RSA0059627  Arnica chamissonis subsp. foliosa 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
  JEPS94480  Arnica cordifolia Vernon H. Oswald and Lowell Ahart 1997-5-27 8527 Lassen 5.4 mi ne of Highway 139 0.4 mi e of its junction with the road to Shingle Mill Spring (n of Susanville on Forest Route 38N04); Forest Route 38N04 1798 Comment
  POM29781  Arnica cordifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  JEPS118456  Arnica cordifolia var. cordifolia Lowell Ahart, John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CHSC27167  Arnica dealbata J. D. Prouty 1978-7-27 30 Lassen 3.9 mi w of jct with road A-1 on n side of Merrill Flat Rd just e of Roney Corral, s of Eagle Lake. 1770 Comment
  UC36753  Arnica dealbata M. S. Baker and Frank Nutting 1894-7-28 Lassen mts s Eagle Lake Comment
  CHSC60812  Arnica fulgens Vernon H. Oswald; Lowell Ahart 1993-6-28 5580 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  CAS-BOT-BC82712  Arnica longifolia James Jokerst 1983-7-23 1870 Lassen Grasshopper Valley Quad. Near Madeline Plains 1614 Comment
  CAS-BOT-BC82713  Arnica longifolia Clarence R. Quick 1962-6-18 62 -16 Lassen Road 21, Blacks Mountain E.F. Hdqrts., east of Halls Flat, north of Poison Lake Comment
  CHSC12429  Arnica nevadensis Robert W. Severin 1969-6-21 10 Lassen 2 mi SSE E.L.B.S. between Five Points turnoffs. 1584 Comment
  CDA10134  Artemisia abrotanum E. E. Fix 1964-11-4 Lassen From Soil Conservation Service Nevada. 0 Comment
  UCD129181  Artemisia arbuscula A. A. Beetle 1957-8-16 12802 Lassen between Susanville and Johnstonville. Comment
  CHSC118794  Artemisia arbuscula subsp. arbuscula L. P. Janeway; B. Castro 2015-6-5 11766 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC118795  Artemisia arbuscula subsp. arbuscula L. P. Janeway 2015-8-9 11823 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01- the road to Patterson Camprgound); 0.7 air-km west of Long Valley, 5.3 air-km northeast of Blue Lake. 2179 Comment
  SEINET3396710  Artemisia arbuscula subsp. longicaulis S. C. McArthur, E. D. McArthur 1986-1 1591 Lassen Shafer Mountains Comment
  CHSC72215  Artemisia cana subsp. bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-14 9622 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  CAS-BOT-BC84829  Artemisia cana subsp. cana Ernest C. Twisselmann 1961-7-21 6572 Lassen Harvey Valley 1981 Comment
  UCD159571  Artemisia douglasiana D. S. Park 2011-6-27 308 Lassen East of Westwood. Growing near Willard Creek. 1471 Comment
  JEPS103170  Artemisia dracunculus Beth Corbin 2002-7-10 1089 Lassen Madeline Plains, ESE side. 5 air mi N of top of Observation Pk. 1627 Comment
  JEPS124638 Image available Artemisia lindleyana Laurie Hooker 1965-7-13 119 Lassen On highway 299 west under 2nd bridge of Pit river overflow. Comment
  JEPS37008  Artemisia ludoviciana subsp. incompta W. L. Jepson 1918-8-4 7809 Lassen Horse Lake 1554 Comment
  CHSC117459  Artemisia ludoviciana subsp. ludoviciana Lowell Ahart; John Dittes 2016-7-13 21105 Lassen Center of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS37022  Artemisia nova R. F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  RSA719608  Artemisia nova A. Tiehm, Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of highway 1402 Comment
  CDA19747  Artemisia spinescens D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  UCR67441  Artemisia tridentata George K. Helmkamp 1990-9-23 D- 7 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CAS-BOT-BC97325  Artemisia tridentata subsp. tridentata George W. Gillett 1957-9-4 1132 Lassen Near Bute Lake; intersection of the Widow Lake - Snag Lake trails 1859 Comment
  RSA647532  Artemisia tridentata subsp. tridentata Marion P. Harthill 1972-6-16 793 Lassen Doyle Comment
  SEINET3391559  Artemisia tridentata subsp. tridentata E. D. McArthur 1982-1 EDM- 1357 Lassen NW of Janesville. @ Jct of Co. Ros 205 & 219 Comment
  UC773962  Artemisia tridentata subsp. vaseyana L. R. Short 1936-9-30 S- 505 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1752 Comment
  UC1035970  Asclepias cordifolia Helen K. Sharsmith 1955-6-27 4514 Lassen near Fall River Mills (in forest adjacent to State Highway 299); Lassen National Forest 1219 Comment
  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
  RSA401104  Asclepias speciosa George Willet 1935-6-27 s.n. Lassen Susanville Comment
  SEINET199764  Asclepias speciosa George A. Fischer 1933-7-29 F- 276 Lassen Lassen National Forest; Stringer, in southwest corner of N.F. 1695 Comment
  CHSC92938  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
  CHSC12949  Astragalus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5811 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  POM204051  Astragalus accidens var. hendersonii J. T. Howell 1934-6-10 11875 Lassen Janesville Comment
  CAS-BOT-BC177432  Astragalus andersonii John Thomas Howell 1934-6-10 11875 Lassen Janesville Comment
  CAS-BOT-BC177437  Astragalus andersonii John Thomas Howell 1934-6-10 11846 Lassen 4 miles south of Omira Comment
  CHSC93569  Astragalus andersonii Lowell Ahart; John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC585206  Astragalus andersonii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1754 Lassen nw-facing slope of ridge e Red Rock; ridge e of Red Rock 1615 Comment
  UC84393  Astragalus andersonii T. Brandegee 1892-6-30 Lassen Janesville Comment
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Oct 22 2007
  CDA26598  Astragalus andersonii T. C. Fuller 1965-6-3 13608 Lassen Driveway to the cemetery, Janesville. 0 Comment
  SEINET10874238  Astragalus andersonii Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 861 Lassen Collected at jct of hwy 70 & 395 at arco station. Comment
  SEINET5323085  Astragalus andersonii M. J. Williams, A. Tiehm 1978-5-14 78- 48 -2 Lassen 2.8 mi S of northern road into Red Rock (off Hwy 395). 1372 Comment
  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
  SEINET2059942 Image available Astragalus argophyllus var. argophyllus Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10347 Lassen 1 mi W of the State line on the dirt road from Hwy 395 to Smoke Creek, S side of Rush Creek 1341 Comment
  CAS-BOT-BC178764  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen Along north shore of Eagle Lake 1554 Comment
  JEPS699  Astragalus canadensis var. brevidens Jos. Grinnell 1929-6-13 Lassen Spaldings Island , Spaldings Island (Eagle Lake) Comment
  NY797390  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1645.9 Comment
  NY797391  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen Along north shore of Eagle Lake 1554.5 Comment
  CHSC118474  Astragalus canadensis var. brevidens Don Lepley 2016-9-17 6 /28/2015 Lassen Eagle Lake Ranger District. Southwest corner of Eagle Lake, roughly a half-mile northeast of entrance of Christie Campground, near end of rough road past Eagle Lake Resort. UTM 683577 x 4493277 1559 Comment
  UCD33606  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  RSA0028049  Astragalus curvicarpus John F. Emmel 1996-7-14 1423 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  RSA111041  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5676 Lassen N or Doyle. 1265 Comment
  SEINET10838264  Astragalus curvicarpus Paul Gallian, David B. Dunn 1971-6-2 Gallian 509 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
  CHSC23432  Astragalus curvicarpus var. curvicarpus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5816 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  UC1609292  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-6-14 5519 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd.518,33N89), among low dunes on upper beach btwn road and lake); w shore Eagle Lake 1566 Comment
  CHSC29935  Astragalus filipes Robin Ondricek; Robert Ediger 1978-6-6 37 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1670 Comment
  HSC82216  Astragalus filipes Thomas W. Nelson, Jane P. Nelson 1980-7-6 6001 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1537108  Astragalus filipes Gordon H. True Jr. 1938-7-9 911 Lassen Madeline Plains near Termo; Madeline Plains near Termo 1524 Comment
  CHSC77209  Astragalus geyeri var. geyeri G. Schoolcraft 1997-6-3 2593 Lassen Flats n. of Fort Sage Mtns. 1219 Comment
  CAS-BOT-BC186861  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford 1264 Comment
  NY674268  Astragalus gibbsii G. Schoolcraft 1993-6-8 2285 Lassen US Highway 395 at Airport Road 1274 Comment
  RSA121850  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley 1341 Comment
  CAS-BOT-BC186914  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5740 Lassen Mesa W. of Susanville 1371 Comment
  CHSC83623  Astragalus inversus L. P. Janeway 2001-6-28 7237 Lassen High Cascade Range. Southeast slope of Cone Mountain, 0.8 km south-southeast of the summit; along Road 33N41Y 0.2 km northwest of Road 33N41YD. 1950 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
  RSA111018  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 4300 Lassen West of Susanville 1310 Comment
  UC1561990  Astragalus inversus Barbara Ertter 1987-7-25 7314 Lassen ca 27 airmi nw Susanville (FR33N02 to Harvey Valley w of jct w/FR33N04); nw of Susanville 1737 Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  CAS-BOT-BC229045  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC187159  Astragalus lentiginosus var. floribundus Arnold Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile north of Wendel 1231 Comment
  NY675585  Astragalus lentiginosus var. floribundus H. D. D. Ripley 1943-6-13 5678 Lassen North of Doyle 1265 Comment
  UC1128892  Astragalus lentiginosus var. lentiginosus A. Simontacchi 1940-6-8 844 Lassen Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest) Comment
  CAS-BOT-BC192841  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  JEPS87063  Astragalus pulsiferae Dean Wm. Taylor with Glenn Clifton 1990-6-12 10877 Lassen ca 0.5 mi before the Modoc County Line (road from Adin to Ash Valley (Forest Road 88)); Modoc Plateau, road from Adin to Ash Valley 1554 Comment
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Jan 31 2015
  NY694127  Astragalus pulsiferae var. pulsiferae See comments 1981-6-23 614 Lassen West of Susanville 1463 Comment
  RSA339984  Astragalus pulsiferae var. pulsiferae Noel Holmgren, Patricia K. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 1890 Comment
  SEINET5324389  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 L-16 Lassen 2 mile W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  SEINET10452237  Astragalus purshii Mary Susan Taylor 1974-1 Taylor 257 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS108699  Astragalus purshii var. purshii H. Chappel, K. Moran, K. Strassman 2002-6-27 ALT- 13 Lassen Pit River Valley / Beaver Creek 1258 Comment
  POM16083  Astragalus purshii var. tinctus M. S. Baker 1894-7-9 s.n. Lassen Dixey Valley Comment
  UC1136766  Astragalus purshii var. tinctus George A. Fischer and Irwin H. Johnson 1933-7-14 F- 249 Lassen Lassen Forest 1767 Comment
  POM25988  Astragalus whitneyi Marcus E. Jones 1897-6-28 s.n Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC68862  Astragalus whitneyi var. confusus Vernon H. Oswald; Lowell Ahart 1997-6-24 8634 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CAS-BOT-BC200869  Astragalus whitneyi var. confusus D. B. Dunn; B. J. Cox 1971-6-2 17770 Lassen Approx. 12 mi. S. of Adin on Calif. Hwy. 139 1371 Comment
  NY701852  Astragalus whitneyi var. siskiyouensis H. D. D. Ripley 1943-6-14 5747 Lassen Hidden Valley, east of Susanville 1585 Comment
  UC1567401  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  CAS-BOT-BC66017  Athyrium filix-femina var. cyclosorum B. C. Cain 1925-8-24 120 Lassen 1 mile below Drakesbad, Mt. Lassen Nat. Park Comment
  OBI75877  Athysanus pusillus Anthony Baniaga 2011-6-29 399 Lassen Lassen Natl Forest. Fredonyer Pass, S of Willard ck. Fredonyer Pass quad T29N R10E sec 14 NW of SE 1500 Comment
  JEPS120466  Atriplex canescens var. canescens L. P. Janeway, B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. Comment
  JEPS29746  Atriplex confertifolia Rimo Bacigalupi and L. R. Heckard 1962-5-28 8501 Lassen along road from U.S. 395 past Wendel and Flanagan to Pyramid Lake, Nevada, 2 mi e Wendel junction (n of Honey Lake); , e of Wendel junction 1219 Comment
  UCR244045  Atriplex gardneri var. falcata Jim Andre 1993-6-1 19715 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  JEPS94838  Atriplex gmelinii var. gmelinii Vernon H. Oswald and Lowell Ahart 1998-9-8 9581 Lassen 2.2 mi n of Bieber (on County Road 91 (Bieber-Lookout Road)); Ash Creek and Big Swamp, County Road 91 1258 Comment
  UCD97420  Atriplex hortensis E. K. Balls; P. C. Everett 1952-10-10 18138 Lassen 1.7 miles NE of Standish, Hwy. 395 between Susanville and Alturas. 1249 Comment
  JEPS95903  Atriplex prostrata Lowell Ahart 1999-9-13 8209 Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  CHSC68609  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1997-5-7 8402 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. 1420 Comment
  CAS-BOT-BC106486  Balsamorhiza hookeri Elmer I. Applegate 1934-5-4 8919 Lassen Plains at south end of Secret Valley Comment
  JEPS94113  Balsamorhiza hookeri Vernon H. Oswald and Lowell Ahart 1998-5-22 90889 Lassen Hwy. 36 between Fredonyer Summit and Susanville (0.4 mi. w. of the Susan R. & Bizz Johnston Trail) 1417 Comment
  CAS-BOT-BC100053  Balsamorhiza lanata B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6557 Lassen Just S of Ravendale 1580 Comment
  UCD129528  Balsamorhiza macrolepis Tom Vestal DVM 2002-5-23 s.n. Lassen south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir. Comment
  SEINET10617239  Balsamorhiza sagittata Billy Joe Cox 1971-6-2 Cox 3216 Lassen Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia. 1646 Comment
  CAS-BOT-BC16436  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49177 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  CHSC76094  Bassia hyssopifolia Lowell Ahart 1999-9-13 8206 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  RSA79262  Bassia hyssopifolia E. K. Balls 1952-10-10 18137 Lassen 0.7 miles E of Standish, Hwy 395, between Susanville and Alturas. 1250 Comment
  UCD97537  Bassia hyssopifolia E. K. Balls; P. C. Everett 1952-10-10 18137 Lassen 0.7 mi. e. of Standish, Hwy. 395, between Susanville and Alturas. 1249 Comment
  RSA385883  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale; lower slopes of Observation Peak Comment
  SD52270  Beckmannia syzigachne F. Stephens 1894-8-11 11766 Lassen Comment
  CHSC110167  Berberis aquifolium var. aquifolium V. Lockie 2010-5-1 Lassen Location: Just off of Highway 139, east side of road, approx. 8.25 miles NE of Susanville, CA on Antelope Mountain. 1630 Comment
  SEINET3100770 Image available Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles W of highway 395 on highway 70 then 5.5 road miles N on Scott Road. 1490 Comment
  UCR182884  Berteroa incana D. Mcdonald 2005-7-18 PDR 1307852 Lassen Modoc Plateau, Hallelujah Junction Comment
  CHSC29876  Berula erecta Robin L. Ondericek 1978-8-8 119 Lassen In water above the dam at Murrers Upper Meadow. 1548 Comment
  CHSC66844  Berula erecta Vernon H. Oswald 1996-9-21 8285 Lassen Modoc Plateau. Ca. 3 mi W of Hwy. 139 on the road to Eagle Lake Biological Station, ca. 10 mi (air) N of Susanville. 1508 Comment
  HSC95177  Bidens cernua Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 678 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95769  Bidens cernua Gordon Leppig, J. Cromwell 1997-7-27 616 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1542915  Bidens cernua G. Schoolcraft 1987-9-1 5380 Lassen 3.5 mi w of Madeline (along Ash Valley Road); Ash Valley Road 1639 Comment
  CHSC34602  Bistorta bistortoides N. E. Heiken 1978-7-16 72 Lassen Colman L., several mi S of Eagle L. 1962 Comment
  HSC23511  Bistorta bistortoides B. Anthony 1967-7-14 290 Lassen 5.3 mi. from jct. of Hwy. 44 and rd. to Silver Lake 1799 Comment
  CAS-BOT-BC128045  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3725 Lassen 5 mi. S. of Likely (Modoc Co.) 1402 Comment
  HSC81800  Blepharipappus scaber Thomas W. Nelson, Jane P. Nelson 1980-7-6 6030 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  SFV3785  Blepharipappus scaber I. L. Wiggins, D. B. Wiggins 1961-6-11 16355 Lassen East of Eagle Lake, 2 miles north of Susanville. Roadside. 1340 Comment
  UC1119057  Blepharipappus scaber A. Simontacchi 1940-7-8 5575 Lassen 5.1 mi s of Jelly Camp (Halls Flat); Halls Flat 1699 Comment
  UC1393121  Blepharipappus scaber John L. Strother 1970-5-23 953 Lassen 6 mi n of Honey Lake 1280 Comment
  RSA603799  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3725 Lassen 5 miles south of Likely. 1402 Comment
  SEINET10846329  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2600 Lassen Hallelujah Jct. intersection of U.S. Hwy. 395 & CA Hwy. 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  CHSC107999  Boechera pinetorum Lowell Ahart; John Dittes 2011-6-20 17505 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CAS-BOT-BC25509  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-8-1 50203 Lassen Sierra Nevada. Summit of Diamond Range, south of Susanville. About 3 miles east of Diamond Mountain. 2194 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
  CAS-BOT-BC25877  Boechera subpinnatifida John Thomas Howell 1934-6-10 11861 Lassen Honey Lake Valley, 37 miles south of Susanville. 1219 Comment
  UC1561877  Boechera subpinnatifida Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen Skeedaddle Mountains on NE side of Honey Lake, E of road over saddle on W side of range. 1645 Comment
  RSA121169  Boisduvalia glabella G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 197 Lassen Grass Valley (Dry Lake), Lassen [National] Forest 1695 Comment
  JEPS95898  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1999-9-13 8221 Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  UCR202646  Brickellia microphylla George K. Helmkamp 1990-9-23 B- 15 Lassen Modoc Plateau, Susanville 1189 Comment
  UC1137774  Brodiaea coronaria subsp. coronaria August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest 1706 Comment
  CHSC27122  Bromus briziformis Robert A. Schlising 1978-6-28 3295 Lassen E of Eagle Lake at Lower Dry Lake. 1645 Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
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Jun 19 2008
  CHSC36486  Bromus briziformis Margaret E. Halloran 1982-6-2 2 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of jct. Hwy 139 and Ravendale Rd. Comment
  JEPS45832  Bromus briziformis Duncan Dunning 1923-6-6 Lassen lava rocks below Ravendale Comment
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Jun 24 2009
  UCR119112  Bromus carinatus Beecher Crampton 1954-7-5 2055 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  UC1136817  Bromus carinatus var. carinatus George A. Fischer, Irwin H. Johnson 1933-7-12 F 231 Lassen Lassen National Forest, Patterson Flat Patterson Flat; Lassen National Forest, Patterson Flat 1737 Comment
  UCD59087  Bromus carinatus var. marginatus L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Lassen Forest. 1828 Comment
  CHSC118475  Bromus carinatus var. marginatus Don Lepley 2016-7-20 Lassen Eagle Lake Ranger District. Uphill side of Road 29N43.2 at outlet of Aspen Flat (tributary to Baxter Creek). 2026 Comment
  UC1024682  Bromus ciliatus Leo Whitney 1934-7-26 2164 Lassen 7-8 mi sw of Eagle Lake (near Bridge Creek, Lassen National Forest, Bridge Creek Camp); Lassen National Forest, Bridge Creek Camp 1737 Comment
  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
  UCD58445  Bromus commutatus R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. Comment
  JEPS103200  Bromus japonicus G. Schoolcraft 1995-6-6 2492 Lassen Antelope Spring N of Skedaddle Mountains 1524 Comment
  SEINET10717734  Bromus japonicus Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9750 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  CHSC7690  Bromus madritensis subsp. rubens Beverley J. Wise 1969-5-23 126 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1554 Comment
  CAS-BOT-BC162182  Bromus orcuttianus John Thomas Howell; Gordon H. True 1973-8-1 50180 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  UC53747  Bromus secalinus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  RSA0062688  Bromus subvelutinus Marion P. Harthill 1971-6-21 210 Lassen Susanville. Comment
  CAS-BOT-BC161576  Bromus suksdorfii Clare B. Hardham 1971-8-22 18407 Lassen Diamond Mountain. Comment
  CHSC12421  Bromus tectorum Anne Linda Brisk 1969-6-19 4 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CAS-BOT-BC185530  Bromus vulgaris John Thomas Howell; Gordon H. True 1973-7-31 50056 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  POM312337  Callitriche verna Verne Grant, H. L. Mason 1947-7-9 13294 Lassen 5 miles E of Bieber. Comment
  CAS-BOT-BC80346  Calocedrus decurrens John Thomas Howell 1976-7-19 51964 Lassen on Gold Run Creek southwest of Susanville 1386 Comment
  SEINET11051598  Calocedrus decurrens D. Charlet 1996-7-8 2289 Lassen Sierra NV, Diamond Mountains, East Canyon, Milford Grade, Laufman Campground. 1620 Comment
  HSC15373  Calochortus bruneaunis M. T. Milligan 1964-8-6 209 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  SBBG15290  Calochortus leichtlinii H. and M. Dearing 1938-7-1 2237 Lassen top of pass W of Susanville 1762 Comment
  CAS-BOT-BC487968  Calochortus leichtlinii Marcus E. A M Jones 1897-7-8 s.n. Lassen Lassen's Peak 1828 Comment
  CHSC6233  Calyptridium umbellatum L. Harman 1946-6-23 Lassen Roop mountain. 2133 Comment
  UC699726  Calyptridium umbellatum Farris Farris 1936-6-15 Lassen Eagle Lake road 1676 Comment
  UC773930  Calystegia occidentalis subsp. occidentalis L. R. Short and Wm. Gansberg 1936-7-3 S- 469 Lassen Lassen Forest , Lassen <National> Forest (Burgess Spring Experiment Range) 1848 Comment
  CHSC7660  Camassia quamash Beverly J. Wise 1969-5-18 142 Lassen Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake. 1554 Comment
  CAS-BOT-BC497000  Camassia quamash Luella Bass 1980-6-14 EV 2 - 80 Lassen Elysian Valley Comment
  RSA0009459  Camassia quamash subsp. breviflora Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET8197883  Camassia quamash var. breviflora J. A. Young 1982-6-9 s.n. Lassen Meyer's Ranch, Adin. 1372 Comment
  SEINET10480825  Camelina microcarpa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17759 Lassen Approx 12 mi s of adin on state hwy 139, in basalt and clay; along edge of rd on rolling knoll, in artemisia-juniper assoc. 1372 Comment
  RSA38438  Camissonia boothii subsp. alyssoides P. A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Hwy 395. 1341 Comment
  JEPS107788  Camissonia contorta Lowell Ahart, John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  NY851343  Camissonia contorta LeDoux 1973-5-25 870 Lassen Collected 3 miles north of Milford on Hwy 395 at Honey Lake campgrounds Comment
  RSA186551  Camissonia parvula Peter H. Raven 1962-5-28 17870 Lassen Along U.S. Highway 395, 32 miles south of Milford Comment
  CHSC71092  Camissonia pubens Vernon H. Oswald; Lowell Ahart 1998-5-22 9136 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. Roadside banks. 1341 Comment
  RSA271914  Camissonia pubens Christopher Davidson 1975-6-7 2758 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA125385  Camissonia tanacetifolia Arthur R. Kruckeberg 1954-6-22 3322 Lassen 6 miles south of Likely along Highway 395 Comment
  RSA12158  Camissonia tanacetifolia subsp. quadriperforata Wayne E. Sawyer 1935-6-27 219 Lassen Long Valley. 1311 Comment
  CAS-BOT-BC160858  Camissonia tanacetifolia subsp. tanacetifolia Mrs. C. C. Bruce 1898-6-1 2203 Lassen Susanville Comment
  CAS-BOT-BC160863  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-7-8 12505 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC160867  Camissonia tanacetifolia subsp. tanacetifolia Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16364 Lassen Roadside along California Highway 139, about 1 mile N of Grasshopper Valley Comment
  CAS-BOT-BC160874  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  CAS-BOT-BC282942  Canadanthus modestus B. Bartholomew; B. Anderson 1988-7-22 4499 Lassen Mosquito Creek ca 2 km SW of Patterson Meadow, S end of the Warner Mountains 2080 Comment
  CHSC117199  Capsella bursa-pastoris Lowell Ahart; John Dittes 2016-6-7 20980 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS107837  Capsella bursa-pastoris Lowell Ahart, John Dittes 2005-6-2 11919 Lassen Near bunkhouse, Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC773929  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  CAS-BOT-BC37252  Cardamine breweri Louella Bass 1980-5-22 s.n. Lassen Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville. Comment
  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
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  JEPS63614  Carex angustata Leland S. Smith 1922-7-30 68 Lassen Martin Spring Meadow Lassen National Forest 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
  CAS-BOT-BC19394  Carex bolanderi John Thomas Howell; Gordon H. True 1973-8-1 50175 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  JEPS94477  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8502 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling road); Forest Route 38N04 1546 Comment
  CDA33049  Carex douglasii T. C. Fuller 1963-7-15 10890 Lassen South side of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  JEPS118277  Carex filifolia var. erostrata Lowell Ahart, John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1609197  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  SEINET7558599 Image available Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  SEINET7559362 Image available Carex fracta Barbara L. Wilson, Richard Brainerd, Bruce Newhouse 2004-8-28 11194 Lassen Near Bluff Falls in the Lassen National Forest, approximately 0.7 air mile south of the south boundary of Lassen Volcanic National Park on Highway 89. 1981 Comment
  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
  CHSC76848  Carex lenticularis var. lipocarpa L. P. Janeway; Loren Gehrung 1999-10-9 6594 Lassen High Cascade Range. In southwestern arm of Caribou Lake, 1995 Comment
  HSC95193  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 528 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS97331  Carex limosa Vernon H. Oswald 1995-8-26 7217 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  CHSC114406  Carex microptera Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A. 2133 Comment
  UC2015854  Carex microptera Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4447 Lassen Lassen Volcanic National Park. Lassen Peak, above parking area. Comment
  UC1583950  Carex multicaulis G. Schoolcraft 1990-5-15 2049 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  CHSC99782  Carex nebrascensis Lowell Ahart; John Dittes 2007-6-20 15019 Lassen On wet soil or in shallow water on the north side of the levee, about 90 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  JEPS28339  Carex nebrascensis George W. Gillett 1957-7-22 881 Lassen Lassen Volcanic National Park, Snag Lake, Campsite near south shore Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  RSA755319  Carex nebrascensis L. Ahart, John Dittes 2008-6-22 15019 Lassen On the north side of the levee, about 90 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 air miles northeast of Bieber. 1261 Comment
  UC1536798  Carex nebrascensis Gordon H. True Jr. 1939-6-15 995 Lassen near Grasshopper Valley; Bullard Lake Comment
  RSA201569  Carex nebrascensis 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), California. 1905 Comment
  CAS-BOT-BC119041  Carex pellita John Thomas Howell 1976-7-19 s.n. Lassen On Gold Run Creek SW of Susanville 1386 Comment
  CHSC58857  Carex pellita Vernon H. Oswald; Lowell Ahart 1992-7-16 5120 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  CHSC66413  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-17 7809 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 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
  CHSC77245  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek. 1767 Comment
  CHSC89747  Carex petasata L. P. Janeway 2004-6-26 8153 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  SEINET4292243 Image available Carex petasata Unknown 2004-1 8139 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. Swains Hole 7.5' quad. Comment
  UC506938  Carex petasata George A. Fischer, Irwin H. Johnson 1933-7-12 Lassen Patterson Flat Lassen National Forest 1737 Comment
  HSC48074  Carex praegracilis D. H. Norris, F. J. Hermann 1972-5-17 22629 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  UC1542937  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen near Stone Ranch; Eagle Lake 1554 Comment
  UCD55306  Carex praegracilis Ellen Dean; Gary Schoolcraft 2006-5-16 3135 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  CAS-BOT-BC118402  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen Along shore of Eagle Lake near Stone Ranch. 1554 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 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
  CHSC53660  Carex rossii L. P. Janeway; Oscar V. Janeway, Lillian D. Janeway 1987-5-27 2101 Lassen Near S end of Eagle Lake. Along Eagle Lake Rd at jct with road to Pikes Pk. 1569 Comment
  JEPS118165  Carex rossii Dean W. Taylor 2009-5-20 20604 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  HSC48075  Carex simulata D. H. Norris, F. J. Hermann 1972-5-17 22630 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  UC2031886  Carex simulata Nick Otting 2003-7-16 686 Lassen Modoc Plateau, Smoke Creek, at Big Spring, 13 air miles east-southeast of Ravendale. Comment
  HSC97395  Carex straminiformis L. P. Janeway 2003-7-24 7917 Lassen High Cascade Range, along FS 30N14, 1.1 km from FS 30N21, upper Susan River, 4.7 mi. W of Clover Valley 1932 Comment
  CHSC77248  Carex subfusca G. Schoolcraft 1997-7-9 2608 Lassen S of Doyle Corral. 1706 Comment
  JEPS28384  Carex subfusca George W. Gillett 1957-7-26 911 Lassen lake shore near ne arm of Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  SEINET4292262 Image available Carex subfusca Unknown 2003-1 7915 Lassen Swain Mountain 7.5'quad. High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of CloverValley. Comment
  CAS-BOT-BC116612  Carex subfusca Hans Leschke 1957-9-21 1528 Lassen Trail Butte Lake-Cinder Cove at cold spring. 1859 Comment
  CAS-BOT-BC116613  Carex subfusca Hans Leschke 1958-8-17 1568 Lassen Reflexion Lake 1792 Comment
  CAS-BOT-BC116617  Carex subfusca B. Clear 1938-7-14 s.n. Lassen Manzanita Lake, Lassen Park. Comment
  CAS-BOT-BC116622  Carex subfusca W. B. Cooke; V. G. Cooke 1976-10-7 53192 Lassen Lassen Volcanic National Park, Butte Lake. 1841 Comment
  UC1142963  Carex utriculata A. L. Hormay 1941-6-17 24 Lassen near Westwood (Meadow Lake); Lassen National Forest 1615 Comment
  CHSC96454  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  SEINET7579960 Image available Carex vesicaria George W. Gillett 1957-7-22 879 Lassen Lassen Volcanic National Par, Snag Lake, matin of gravel bars along south shore. 1850 Comment
  UCD123074  Castilleja Grady L. Webster 1989-5-13 7711 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UC1368787  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen about 6 mi n Honey Lake 1280 Comment
  RSA38476  Castilleja angustifolia Philip A. Munz 1947-5-19 11866 Lassen 27.7 miles south of Ravendale. 1311 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-BC249613  Castilleja applegatei subsp. pinetorum G. Schoolcraft 1987-5-6 1699 Lassen North end of Eagle Lake near Stone Ranch 1554 Comment
  CAS-BOT-BC249617  Castilleja applegatei subsp. pinetorum Alice Eastwood; John Thomas Howell 1940-6-15 8326 Lassen Grasshopper Valley Comment
  CAS-BOT-BC249622  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-9 12527 Lassen Harvey Valley Comment
  CAS-BOT-BC249623  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-10 12556 Lassen Black's Mt. Comment
  CHSC36455  Castilleja applegatei subsp. pinetorum Susan H. Euing 1982-6-5 9 Lassen Ca. 3 1/2 mi s of jct of forest service roads 5.16 and 5.17. Comment
  RSA747544  Castilleja applegatei subsp. pinetorum K. M. Meyer, A. Townesmith 2007-7-23 152 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
  UC1537569  Castilleja applegatei subsp. pinetorum Gordon H. True Jr. 1936-6-27 563 Lassen Hot Springs Mountain 1676 Comment
  UCD170229  Castilleja applegatei subsp. pinetorum K. M. Meyer; A. Townesmith 2007-7-23 152 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
  UCR268960  Castilleja applegatei subsp. pinetorum Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31428 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  JEPS94529  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1997-6-24 8642 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  SEINET3836934 Image available Castilleja campestris Marcus E. Jones 1897-7-3 Lassen Pratville 1372 Comment
  CHSC5897  Castilleja campestris subsp. campestris J. B. Kimsey 1946-6-11 Lassen Pine Creek near Eagle Lake. 1584 Comment
  UCD55264  Castilleja chromosa Ellen Dean 2006-5-15 3062 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  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
  SEINET10549100  Castilleja chromosa Paul Gallian 1971-6-2 Gallian 460 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, jeffry pine along high ridge in sandy wash. Comment
  CHSC66262  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1996-6-24 7842 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow. 1633 Comment
  CHSC92738  Castilleja lacera L. P. Janeway 2005-7-3 8454 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
  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
  CHSC6268  Castilleja linariifolia P. Balch 1955-7-21 Lassen Willow Creek, Eagle Lake. 1463 Comment
  UC1542951  Castilleja linariifolia G. Schoolcraft 1987-9-1 1771 Lassen s side near top Observation Mtn. 2346 Comment
  UC26450  Castilleja linariifolia Milo S. Baker 1894-7-25 Lassen Eagle Lake 1524 Comment
  HSC63893  Castilleja linariifolia Teresa Prendusi 1980-7-1 Lassen McCoy Flat, 5 mi. E of northern tip of Eagle Lake 1646 Comment
  UC485781  Castilleja miniata H. E. and S. T. Parks Jun 1928 250 Lassen Drakesbad; Lassen National Park Comment
  CAS-BOT-BC244894  Castilleja miniata W. C. McCalla 1940-6-21 6284 Lassen Little valley along Hy. 36, west of Susanville Comment
  RSA46750  Castilleja miniata J. T. Howell 1934-6-10 11871 Lassen Janesville 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
  JEPS114696  Castilleja pilosa Lowell Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  JEPS86248  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5529 Lassen about 0.5 mi e Nubieber 1249 Comment
  RSA0037005  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-19 14879 Lassen 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
  JEPS114750  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-22 15027 Lassen Along a small natural drainage, about 20 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  JEPS121270  Castilleja tenuis Lowell Ahart 2013-7-22 18840 Lassen W margin of duck field, about 30 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS124373  Castilleja tenuis Lowell Ahart, John Dittes 2015-7-13 20314 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS4336  Castilleja tenuis Brown and Wieslander 1922-7-18 36 Lassen Martin Springs; Eagle Lake Comment
  RSA0059451  Castilleja tenuis Lowell Ahart, John Dittes 2011-6-20 17499 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1012485  Castilleja tenuis Francis W. Pennell 1940-6-7 25727 Lassen 8 mi e Nubieber (Route 299) 1310 Comment
  CAS-BOT-BC52050  Ceanothus prostratus L. B. Barlow 1967-7-4 92 Lassen 5 mi. South of Eagle Lake Biological Station on Gallatin Beach Road 1737 Comment
  JEPS118451  Ceanothus prostratus Lowell Ahart, John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  POM339726  Ceanothus prostratus F. R. Fosberg 1969-8-15 51427 Lassen 10miles W of Susanville Comment
  UC1071530  Ceanothus prostratus A. Simontacchi 1940-6-5 819 Lassen 8.2 mi WNW of Harvey Valley Ranger Station 1737 Comment
  JEPS107853  Ceanothus velutinus var. velutinus Lowell Ahart, John Dittes 2005-6-2 11943 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  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
  OBI4702  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On N side of old rd to Susanville, 1 mi W of Johnstonville Comment
  CAS-BOT-BC276999  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  CDA7223  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  NY444409  Centaurea solstitialis G. Schoolcraft 1982-8-17 866 Lassen Along Smoke Creek Road, just east of Hwy 395 Comment
  CDA7335  Centaurea squarrosa T. C. Fuller 1959-10-15 3125 Lassen East of Pitt River, road to Lookout, ca. 2 miles north of Bieber. 0 Comment
  CDA7336  Centaurea squarrosa T. C. Fuller 1966-7-2 14961 Lassen 0.1 mile to 0.9 mile south of the bridge at Pittville. 0 Comment
  UCD159569  Centaurea stoebe subsp. micranthos D. S. Park 2011-6-27 306 Lassen East of Westwood. Growing near Willard Creek. Comment
  UCD130109  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen west side of Hwy 395, 1.7 miles south of Doyle. Comment
  CAS-BOT-BC106028  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 12 Lassen Roadside and fields Cramer Ranch, Big Valley Comment
  JEPS94089  Centaurea virgata subsp. squarrosa Vernon H. Oswald and Lowell Ahart 1998-9-8 9571 Lassen Hwy. 299 at the R.R. overpass on the e. side of Nubieber 1255 Comment
  CAS-BOT-BC106074  Centaurea virgata subsp. squarrosa Barrett Anderson 1986-7-9 3128 Lassen Road to Day, about 2.4 km N of Rte 299. 1065 Comment
  SEINET13331314 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  UCD130124  Centaurea virgata subsp. squarrosa Dan Marcum 1980-8-24 s.n. Lassen Big Valley. Comment
  CHSC93679  Centaurium tenuiflorum Lowell Ahart; John Dittes 2005-6-2 11977 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
  CAS-BOT-BC279594  Centromadia pungens subsp. pungens R. F. Hoover 1940-10-1 4657 Lassen Near Honey Lake, betw. Janesville and Standish Comment
  CHSC76087  Centromadia pungens subsp. pungens Lowell Ahart; Vernon H. Oswald 1999-9-13 8224 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  JEPS95910  Centromadia pungens subsp. pungens Lowell Ahart 1999-9-13 8224 Lassen on the north side of Mapes Road; about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  CHSC7715  Cerastium fontanum subsp. vulgare Beverley J. Wise 1969-5-23 5 Lassen Susanville--833 Mark St. Garden. 1310 Comment
  CAS-BOT-BC400184  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek 1560 Comment
  UC956834  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1947-7-9 13295 Lassen irrigation ditch 5 mi e Bieber Comment
  UCD150404  Ceratophyllum demersum William Anderson 1963-6-12 s..n. Lassen Honey Lake Valley. Comment
  JEPS124551 Image available Cercocarpus ledifolius P. L. Billings 1965-7-12 90 Lassen 5 mi. N of Susanville on Hwy 139 - 50 yds from road. Comment
  SEINET10483778  Cercocarpus ledifolius Mary Susan Taylor 1974-5-4 Taylor 226 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  UC764012  Cercocarpus ledifolius var. ledifolius R. F. Hoover 1940-9-21 4604 Lassen 4 mi w of Susanville Comment
  CDA19743  Chaenactis douglasii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Between Ravendale and Secret Valley. 0 Comment
  CAS-BOT-BC276614  Chaenactis douglasii var. douglasii Louella Bass 1978-7-11 78 -10 Lassen Elysian Valley 1325 Comment
  CHSC48134  Chaenactis douglasii var. douglasii Vernon Oswald 1986-6-15 2116 Lassen Hwy 139, 8.6 mi ne of Susanville. 1615 Comment
  CHSC75451  Chaenactis douglasii var. douglasii Vernon H. Oswald 1999-6-9 9741 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1136776  Chaenactis douglasii var. douglasii L. R. Short and Wm. Gansberg 1946-7-9 S- 480 Lassen Burgess Spring Experimental Range Lassen Forest, Burgess Spring Experimental Range 1804 Comment
  UCD19699  Chaenactis nevadensis Donald W. Kyhos 1967-9-1 67 -87 Lassen Mount Lassen National Park, in the devastated area within 1/2 mile north of Hat Lake. Comment
  JEPS107309  Chaenactis stevioides Lowell Ahart, John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction 1460 Comment
  SEINET7450297 Image available Chaenactis stevioides F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CHSC4857  Chamaebatiaria millefolium R. Carter 1967-7-13 588 Lassen On the rd to Eagle Lake, Biology Station and Willow Creek. 1584 Comment
  SEINET11908036  Chamaebatiaria millefolium Unknown 1973-1 11 Lassen approx. 50 m W from entrance to Chico State Biological Field Station on E side of Eagle Lake Comment
  CHSC21229  Chamaesaracha nana Robert A. Schlising 1974-6-20 3145 Lassen Near Lower Dry Lake, about 3 mi E of Eagle Lake. Comment
  CHSC113085  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18857 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117544  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2016-7-13 21130 A Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC66863  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1996-9-10 8278 Lassen Mountain Meadows Reservoir SW of Westwood. On the embankment of the railroad at the northwest edge of the reservoir. 1539 Comment
  SJSU10817  Chamaesyce serpyllifolia C. L. Kline 1965-7-12 190 Lassen 8.3 mi NE of Susanville by Hwy 139 1036 Comment
  JEPS39306  Chamerion angustifolium subsp. circumvagum Brown and Wieslander 1922-7-23 37 Lassen Martin Sprs. Eagle Lake Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  HSC991  Cheilanthes gracillima H. E. Parks, S. T. Parks Jun 1928 262 Lassen Mt. Lassen National Park, Drakesbad 2134 Comment
  CHSC94958  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 to Black Hole and junction with Road 35N06; follow the latter about one mile just onto Lassen National Forest land and walk north about 50 yards to low escarpment. 1591 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
  JEPS95746  Chenopodium album Vernon H. Oswald and L. Ahart 1995-8-14 7180 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  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
  CAS-BOT-BC426318  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  CAS-BOT-BC426358  Chenopodium incognitum Margaret Williams; Steven Williams 1974-7-26 s.n. Lassen Near Hallelujah Junction 1493 Comment
  CHSC58839  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1992-7-16 5103 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
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Nov 1 2014
  POM203791  Chenopodium pratericola J. T. Howell 1934-7-8 12499 Lassen Spalding s, Eagle Lake. Comment
  CAS-BOT-BC260781  Chenopodium rubrum var. humile Malcom A. Nobs; S. Galen Smith 1949-7-22 1071 Lassen Northeast shore of Eagle Lake Comment
  CAS-BOT-BC451356  Chimaphila menziesii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain: Susanville. Perkin's Ranch 2133 Comment
  CHSC6236  Chimaphila umbellata P. Balch 1955-7-22 Lassen Roadside between Eagle Lake and Pittville Road. 1676 Comment
  UC1483847  Chimaphila umbellata G. Schoolcraft 1980-7-29 343 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  CAS-BOT-BC39672  Chorispora tenella Gary Schoolcraft 1982-3-24 624 Lassen Lower end of Amedee Canyon. 1280 Comment
  CAS-BOT-BC39671  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
  CAS-BOT-BC247862  Chorizanthe watsonii John Thomas Howell 1962-6-19 37885 Lassen 3 mi. s. of Hallelujah Junction 1524 Comment
  CHSC30554  Chrysolepis sempervirens Sori H. Shad 1970-6-26 20 Lassen Found at the edge of Deans Meadow. 1828 Comment
  CAS-BOT-BC140657  Chrysothamnus humilis Clare B. Hardham 1971-8-22 18391 Lassen Diamond Mountain 2346 Comment
  UC1137593  Chrysothamnus humilis L. R. Short and J. Warren 1936-8-17 S- 495 Lassen Burgess Spr. Exp. Range Lassen Forest 1760 Comment
  RSA79230  Chrysothamnus nauseosus subsp. albicaulis E. K. Balls, Percy C. Everett 1952-10-10 18135 Lassen 4 miles east of Susan River Bridge, Hwy. 36 1372 Comment
  UCD38333  Chrysothamnus viscidiflorus Beecher Crampton 1954-5-11 1883 Lassen Beckwourth Pass. 1588 Comment
  CHSC77190  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  CHSC42146  Chrysothamnus viscidiflorus subsp. viscidiflorus C. E. Laver 1985-8-14 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. Along roadsides. 2194 Comment
  JEPS21409  Chrysothamnus viscidiflorus subsp. viscidiflorus W. L. Jepson 1918-8-4 7813 Lassen e of Eagle Lake; Horse Lake 1554 Comment
  UC1136976  Chrysothamnus viscidiflorus subsp. viscidiflorus L. R. Short and Wm. Gansberg 1936-8-13 S- 494 Lassen Lassen Forest, Burgess Spr. Exp. Range 1770 Comment
  UC1483871  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1980-10-8 357 Lassen near turn-off to Big Spring (along Post Camp road) 1706 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
  UC1299430  Chylismia claviformis subsp. integrior Freed W. Hoffman 1946-6-8 728 Lassen s end Madeline Plains Comment
  UCD130490  Cichorium intybus K. M. Meyer; A. Townesmith 2007-7-19 133 Lassen Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek. 1459 Comment
  CDA38209  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CDA38210  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  UCD59781  Cinna latifolia John Thomas Howell; G. H. True 1973-8-1 50346 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  RSA746510  Cirsium andersonii K. M. Meyer, A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. CA, 1.3 mi. on road 110, off Hwy A21, 1821 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-BC277934  Cirsium canovirens T. C. Fuller 1959-7-7 2739 Lassen Hwy. 395 6 miles/north/road to Karlo Comment
  CAS-BOT-BC278006  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8308 Lassen Willow Creek near Hayden Hill Comment
  JEPS30608  Cirsium douglasii var. breweri Peter H. Raven and Otto T. Solbrig 1958-6-17 13280 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  CAS-BOT-BC278092  Cirsium douglasii var. breweri Peter H. Raven; Otto T. Solbrig 1958-6-17 13280 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  CHSC116356  Cirsium inamoenum J. R. Keck Jr.; D. L. Haws 1980-7-22 PDR 330194 Lassen Ravendale, BLM rangeland. 1625 Comment
  CDA1491  Cirsium ochrocentrum G. D. Barbe 1982-7-12 3878 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 Comment
  CAS-BOT-BC280428  Cirsium ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen M. A. Mallory ranch, Richmond Road, ca. 4 mi. SE/Susanville Comment
  CAS-BOT-BC280438  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 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
  CDA1521  Cirsium ochrocentrum var. ochrocentrum G. D. Barbe 1982-7-12 3876 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 Comment
  CAS-BOT-BC286305  Cirsium scariosum John Thomas Howell 1934-7-6 12435 Lassen Harvey 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
  CAS-BOT-BC233914  Cistanthe umbellata Carl B. Wolf 1929-9-1 3788 Lassen Mt. Lassen National Park, between Grassy and Snag Lakes Comment
  CAS-BOT-BC162636  Clarkia John Thomas Howell 1974-7-30 s.n. Lassen Diamond Mountain - Sierra Nevada 2286 Comment
  CHSC66393  Clarkia gracilis subsp. gracilis Vernon H. Oswald; Lowell Ahart 1996-6-17 7792 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  CAS-BOT-BC123818  Clarkia lassenensis Alice Eastwood; John Thomas Howell 1940-6-11 7983 Lassen Big Valley Mts. Comment
  CAS-BOT-BC163164  Clarkia lassenensis A. M. Vollmer; L. Beane 1953-7-1 98 Lassen Along Halls Flat road, beginning 6 mi. W of Susanville to McArthur 1554 Comment
  CHSC4876  Clarkia lassenensis R. Carter 1967-6-23 546 Lassen Growing 10 yds. off S side of road. Comment
  CAS-BOT-BC164869  Clarkia rhomboidea Clare B. Hardham 1961-6-16 7447 Lassen S. of Susanville Comment
  UC773908  Clarkia rhomboidea L. R. Short and Wm. Gansberg 1936-7-3 S- 358 Lassen Burgess Spring Experiment Range Lassen Forest 1847 Comment
  RSA46419  Clarkia stellata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin s Ranch. 1829 Comment
  CAS-BOT-BC439760  Claytonia rubra subsp. depressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49179 Lassen Elysian Valley northwest of Janesville 1325 Comment
  UC7897  Claytonia rubra subsp. rubra M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS17868  Cleome platycarpa Rimo Bacigalupi with G. T. Robbins 1955-7-21 5430 Lassen 8 mi e U.S. Hwy. 395 (along Smoke Creek Ranch road, se part of Secret Valley); Secret Valley 1402 Comment
  JEPS83688  Cleome platycarpa Staria S. Vanderpool and Richard Vanderpool 1986-6-8 1237 d Lassen 3.5 mi n Hwy. 395 jct. with highway to Wendel (at Noble Emigrant Trail Historical Monument, Hwy 395) 1341 Comment
  UC1537256  Cleome platycarpa Gordon H. True Jr. 1938-7-8 904 Lassen n of Hot Spring Mountain 1371 Comment
  CAS-BOT-BC32957  Cleomella alata C. C. (Mrs.) Bruce 1898-6-1 2364 Lassen Shumway Comment
  SEINET8584734  Cleomella hillmanii var. hillmanii W. Harnach 2010-6-1 1241 Lassen Approx 10 miles NE of Doyle on Fort Sage Road then 1.9 miles N on Cal-Neva Road. Honey Lake Valley. Comment
  NY242421  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 Comment
  UCD150394  Cleomella parviflora Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  CAS-BOT-BC423225  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 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
  CHSC23569  Collinsia parviflora W. O. Baum 1971-7-6 38 Lassen E slope of Gallatin Peak. 1950 Comment
  CHSC7757  Collinsia parviflora Beverley J. Wise 1969-4-26 102 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  UC1023722  Collinsia parviflora Francis W. Pennell 1940-6-9 25752 Lassen 7 mi n of Madeline (Route 395); Route 395 1615 Comment
  UC1032573  Collinsia parviflora A. Simontacchi 1940-5-10 691 Lassen 7.3 mi w of Harvey Mountain Lookout (Lassen National Forest); Lassen National Forest 1752 Comment
  CDA34520  Collinsia parviflora B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  HSC63776  Collinsia parviflora Teresa Prendusi 1980-4-30 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  RSA60368  Collinsia parviflora E. K. Balls 1950-5-9 15951 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  UC2016541  Collinsia torreyi Richard Olmstead 1984-6-26 577 Lassen 2.5 miles east of junction of Forest Service Road and Red Rock Lookout Road (28N02). Comment
  CHSC59776  Collomia grandiflora Mary Meyer 1980-5-15 Lassen On slopes near creek along Secret Creek Canyon. 1371 Comment
  CHSC7767  Collomia grandiflora Beverley J. Wise 1969-6-1 75 Lassen N.E. city limits of Susanville, on Chestnut, at intersection with Hwy 139. 1310 Comment
  JEPS117587  Collomia grandiflora Lowell Ahart, John Dittes 2010-7-31 17002 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  RSA523347  Collomia grandiflora G. H. True 1938-7-9 906 Lassen Near Horse Lake 1524 Comment
  HSC63767  Collomia grandiflora Teresa Prendusi 1980-5-19 Lassen 1 mi. N of Saddle Rock, 16 mi. S of Ravendale along Hwy. 395 1524 Comment
  UC1924199  Collomia linearis Debra Valov 2005-8-20 2005229 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1279 Comment
  CHSC29920  Collomia tinctoria Robin L. Ondricek 1978-6-20 64 Lassen Gallatin Burn, 1.8 mi s of Five Corners. 2011 Comment
  UC1037277  Collomia tinctoria Leo Whitney 1934-7-22 1749 Lassen 6 mi w lower end of Eagle Lake; Lassen National Forest, Antelope Mountain 1981 Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  UC1567424  Comandra umbellata subsp. californica G. Schoolcraft 1989-6-7 1908 Lassen Shaffer Mountain near top Shaffer Mountain 2011 Comment
  CAS-BOT-BC286116  Conyza canadensis John Thomas Howell 1974-7-8 50503 Lassen Susanville 1295 Comment
  POM33286  Conyza canadensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  JEPS17408  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 mi w of Nevada Line, 17.5 mi e of US Hwy 395); draingage of Rush Creek 1341 Comment
  JEPS95913  Cordylanthus maritimus subsp. canescens Lowell Ahart 1999-9-13 8218 Lassen 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
  POM43083  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  POM77897  Cornus occidentalis Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CAS-BOT-BC212204  Cornus sericea Clare B. Hardham 1971-8-22 18903 Lassen Diamond Mountain Comment
  SEINET10739210  Cornus sericea subsp. sericea Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 839 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
  CHSC5205  Crepis acuminata A. Santos 1946-6-10 Lassen Eagle Lake. Near Pelican Island. 1554 Comment
  RSA716340  Crepis acuminata L. Ahart, John Dittes 2005-6-2 11933 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  UC581283  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2314 Lassen about a mi below summit; Black Mountain 1940 Comment
  CAS-BOT-BC290392  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2294 Lassen South slope Thompson Peak, south of Janesville 2133 Comment
  CAS-BOT-BC290393  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2313 Lassen Black Mountain about a mile below the summit 1940 Comment
  CHSC93561  Crepis intermedia Lowell Ahart; John Dittes 2005-6-1 11918 Lassen Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC581218  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2347 Lassen Quartz Mine Willow Creek 1524 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
  UC91877  Crepis monticola T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC1924597  Crepis occidentalis Debra Valov 2006-5-28 2006007 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1305 Comment
  CAS-BOT-BC290822  Crepis occidentalis subsp. pumila Doris Kildale Gillespie 1930-5-13 9366 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC290823  Crepis occidentalis subsp. pumila Elmer I. Applegate 1934-5-4 8915 Lassen South of Secret Valley Comment
  POM203850  Crepis occidentalis subsp. pumila J. T. Howell 1934-6-10 11872 Lassen Janesville Comment
  UC296046  Crepis pleurocarpa E. B. Babcock and J. L. Collins 1926-7-21 89 Lassen 8 mi w Susanville (on hwy to Quincy) 1371 Comment
  UC1483839  Crocidium multicaule G. Schoolcraft 1980-4-6 199 Lassen near base of Bass Hill (along Hwy 395, near city dump) 1280 Comment
  UCD59985  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  UC1951064  Cryptantha Debra Valov 2007-5-22 2007076 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CHSC29917  Cryptantha affinis Robin L. Ondricek 1978-7-22 108 Lassen 1977 Burn area, 1.8 mi e of Coleman Rd. on Lassen Co. Road A1. 1950 Comment
  SBBG6231  Cryptantha affinis H. and M. Dearing 1938-6-30 2226 Lassen ca. 50 mi W of Susanville Comment
  RSA0059645  Cryptantha ambigua Richard R. Halse 2004-8-8 6616 Lassen Along State Highway 139 ca. 6 miles north of Eagle Lake. 1710 Comment
  UCD119054  Cryptantha ambigua Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  JEPS67504  Cryptantha circumscissa W. L. Jepson 1918-8-2 7761 Lassen Beckwith Pass 1463 Comment
  POM72292  Cryptantha circumscissa Marcus E. Jones 1897-6-18 7079 , 7076 Lassen Chat 1524 Comment
  CAS-BOT-BC189458  Cryptantha circumscissa var. circumscissa Alice Eastwood; John Thomas Howell 1940-6-16 8333 Lassen Near Susanville Comment
  NY1110382  Cryptantha humilis B. J. Ertter 1987-6-16 7182 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 Comment
  POM46564  Cryptantha humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CHSC92723  Cryptantha simulans L. P. Janeway 2005-7-3 8448 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  CHSC106073  Cryptantha torreyana Lowell Ahart; John Dittes 2010-7-31 17028 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
  CHSC27926  Cryptantha torreyana M. S. Taylor 1974-7-9 267 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 12 mi nw of Susanville. 1524 Comment
  POM72225  Cryptantha torreyana Marcus E. Jones 1897-6-25 7103 Lassen Susanville. 1341 Comment
  UC1037249  Cryptantha torreyana Leo Whitney 1934-7-5 1787 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  UC1037251  Cryptantha torreyana Leo Whitney 1934-7-5 1787 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  SEINET12764836  Cryptantha torreyana var. torreyana Robert L. Johnson, Mikel R. Stevens 2015-7-10 3940 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  UC1523762  Cusickiella douglasii Gary Schoolcraft 1982-7-20 809 Lassen e McKesick Pk; e of McKesick Pk 2072 Comment
  UC193142  Cycladenia humilis var. humilis J. G. Lemmon Lassen near Shasta (Black Cone); ; Black Cone, near Shasta Comment
  CHSC112187  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 f 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the Crest. 1950 Comment
  CHSC60296  Cymopterus terebinthinus var. californicus Mary Ann Showers 1992-6-13 2560 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  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
  JEPS96081  Cyperus squarrosus Vernon H. Oswald and Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir s.w. Westwood (edge of reservoir between R.R. and Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  JEPS127205  Cystopteris fragilis Lowell Ahart, John Dittes 2016-6-7 21007 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC1063768  Cystopteris fragilis A. Simontacchi 1940-6-5 814 Lassen 3.9 miles nw Cone Mt.; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  CHSC117527  Damasonium californicum Lowell Ahart; John Dittes 2016-7-13 21138 Lassen South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC30066  Damasonium californicum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19182 Lassen Harvey Valley near Cone Springs Comment
  JEPS32210  Damasonium californicum Jos. Grinnell 1928-6-26 Lassen Poison Lake Lassen Peak Region, Poison Lake 1737 Comment
  UC1130604  Damasonium californicum A. Simontacchi 1940-7-4 914 Lassen s. shore Government Lake; Lassen Nat'l Forest, Halls Flat Quad., Government Lake Comment
  UCD61297  Danthonia unispicata F. C. Raney 1966-6-25 Lassen Harvey Valley, Lassen National Forest. Comment
  JEPS18992  Deinandra lobbii Rimo Bacigalupi with L. R. Heckard 1957-8-18 6060 Lassen 3.1 mi ne Bieber (along U.S. Highway No. 299, nw Lassen County); Big Valley 1249 Comment
  UC1567411  Deinandra lobbii G. Schoolcraft 1989-7-24 1997 Lassen w Hayden Hill Mine (along road); Susanville 1737 Comment
  SD51285  Deinandra lobbii Darley F. Howe 1961-8-4 3135 Lassen 11.5 miles east of McArthur on U. S. Highway 299. Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  UC1136878  Delphinium andersonii L. R. Short 1936-5-12 S- 347 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1834 Comment
  UC1583981  Delphinium andersonii G. Schoolcraft 1990-6-12 2090 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CAS-BOT-BC1414  Delphinium andersonii subsp. cognatum David Daniels Keck; J. Clausen 1935-6-24 3748 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC5070  Delphinium depauperatum D. L. Stites 1967-7-4 106 Lassen Ca. 8 mi s of Eagle Lake Biology Station, Deans Meadow. 1950 Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  UC726275  Delphinium nudicaule A. A. Heller 1940-5-22 15663 Lassen hill back of Westwood Cemetery (station several mi w of type station) Comment
  CAS-BOT-BC116044  Delphinium nuttallianum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49180 Lassen Sierra Nevada, Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC116050  Delphinium nuttallianum Mrs. E. C. Sutliffe 1957-7-21 863 Lassen Drakesbad, Lassen Volcanic Park Comment
  OBI75897  Deschampsia cespitosa Anthony Baniaga 2011-8-17 508 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1978 Comment
  CAS-BOT-BC194258  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1943-7-10 49769 Lassen Near Westwood - Sierra Nevada 1554 Comment
  CAS-BOT-BC194262  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1959-9-23 34888 Lassen Juniper Lake north end, Lassen Park 2057 Comment
  CAS-BOT-BC194263  Deschampsia cespitosa subsp. cespitosa G. S. Crew 1927-7-15 57 Lassen Feather Lake, Lassen Forest 1737 Comment
  JEPS122164  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-8-20 19719 Lassen 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. Comment
  CAS-BOT-BC192739  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50650 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC192744  Deschampsia danthonioides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16328 Lassen Along southern shore of Eagle Lake Comment
  JEPS107688  Deschampsia danthonioides Lowell Ahart, John Dittes 2005-6-1 11913 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
  UC1024821  Deschampsia danthonioides Leo Whitney 1935-6-20 3251 Lassen Camp 10 Fruit Grower's Supply Company Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  RSA268159  Deschampsia danthonioides J. R. Reeder, C. G. Reeder 1972-6-1 5630 Lassen 2 miles S. of Nubieber. 1037 Comment
  HSC68802  Deschampsia elongata G. Schoolcraft 1980-8-13 350 Lassen N side of Diamond Mountain. 1951 Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  CAS-BOT-BC43089  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  CDA42999  Descurainia nelsonii L. Ahart, John Dittes 2008-6-19 14891 Lassen West bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  CHSC64771  Descurainia paradisa Vernon H. Oswald 1995-5-24 6776 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel). Roadside. 1219 Comment
  CHSC25101  Descurainia pinnata W. R. Lessig 1967-6-24 3 Lassen 1/4 mi. N. of Eagle Lake Biology Station. 1584 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
  CAS-BOT-BC43164  Descurainia pinnata subsp. brachycarpa John Thomas Howell 1976-7-20 52023 Lassen Sierra Nevada. Bottom flatas along Willard Creek near its confluence with Susana River. 1432 Comment
  UC1126908  Descurainia sophia A. Simontacchi 1940-6-8 828 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CHSC34409  Dieteria canescens Terrance Finn 1979-7-14 11 Lassen +/- .75 mi. from Hallelujah Junction, dirt road towards well. 1493 Comment
  SD132250  Dieteria canescens G. Helmkamp 1990-9-23 G 8 Lassen North of Ravendale. 1675 Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  UC1037283  Dieteria canescens var. shastensis Leo Whitney 1933-8-21 1716 Lassen ca 14 mi w Eagle Lake (Harvey Mountain near Harvey Valley); Lassen National Forest, Harvey Mountain 1737 Comment
  CHSC13945  Diplacus mephiticus M. S. Taylor 1974-7-6 311 Lassen On Gallatin Peak overlooking Gallatin Beach, ca. 13 mi nw of Susanville. 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
  CAS-BOT-BC151431  Diplacus nanus A. M. Vollmer; L. Beane 1953-7-1 104 Lassen Along Halls Flat Road, beginning 6 miles wet of Susanville to McArthur 1554 Comment
  SEINET8205956  Diplacus viscidus R. Carter 1967-7-7 577 Lassen collected outside dining hall; Eagle Lake Biology Station, E central shore. 1524 Comment
  RSA0011496  Dipsacus fullonum R. F. Thorne, Larry E. DeBuhr 1975-8-22 46971 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC91302  Distichlis spicata Lowell Ahart; John Dittes 2005-6-2 11922 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UCD64624  Distichlis spicata var. stricta Verne Grant; Irving Schneider 1947-9-5 8377 Lassen Northwest shore of Eagle Lake by Sam Webb's place (Spaulding). Comment
  HSC95203  Dodecatheon alpinum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-28 507 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC4896  Dodecatheon jeffreyi Bill Wilson 1967-7-15 203 Lassen Collected at Upper Murrer Meadow, 2.5 mi. E of Eagle Lake Biological Station, 10 mi. N of Susanville. 1524 Comment
  HSC17905  Dodecatheon subalpinum W. F. Nickel 1965-4-11 Lassen About 100 yds. W of Paynes Creek on Hwy. 36 Comment
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Jun 27 2013
  CHSC117297  Downingia bacigalupii Lowell Ahart; John Dittes 2016-7-13 21116 Lassen Strand of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC4763  Downingia bacigalupii R. Carter 1967-7-16 622 Lassen Growing in drying vernal pool along side rd. 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
  JEPS117578  Downingia bacigalupii Lowell Ahart, John Dittes 2010-7-31 17013 Lassen Bottom of small wash, 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
  JEPS21587  Downingia bacigalupii Calvin McMillan 1949-6-15 1543 Lassen w of Bieber (nw Lassen County (corner)) Comment
  UC1024290  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (adjacent to State Highway 299); Lassen National Forest Comment
  UC1191995  Downingia bacigalupii Verne Grant and Irving Schneider 1947-7-31 8209 Lassen ne quarter George Williams section 19; Madeline Plain Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  UCD55038  Downingia bacigalupii Gerald Dickinson 1963-7-3 73 Lassen U.S. Highway 299; 1 mile west of Bieber. 1249 Comment
  UCR163269  Downingia bacigalupii Jim Andre 1993-6-29 1408 B Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  JEPS108450  Downingia bacigalupii Lisa Schultheis 1995-6-27 227 -95 Lassen About 3.5 mi S of Madeline, W side of Hwy 395. Comment
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  CHSC60887  Downingia bicornuta var. bicornuta Vernon H. Oswald; Lowell Ahart 1993-7-8 5649 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  JEPS87497  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen on s.e. edge Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi. n. of Hwy. 44, e. side of R.R., which parallels the lake shore at this point) 1709 Comment
  RSA0035911  Downingia bicornuta var. bicornuta Lowell A. Ahart, John Dittes 2008-6-20 14945 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1188739  Downingia insignis John H. Weiler, L. Constance, and E. Molseed 1960-6-13 60163 Lassen 1.7 mi s Ravendale (w side of U.S. Highway 395) Comment
  RSA505420  Downingia insignis Rimo Bacigalupi, Mitchell, S. Galen Smith, G. Bacigalupi 1957-6-28 6000 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline 1616 Comment
  SJSU3581  Downingia insignis P. L. Billings 1965-7-13 76 Lassen near Nubieber 1274 Comment
  HSC68798  Downingia laeta Gary Schoolcraft 1980-7-16 319 Lassen N end of Nelson Corral Reservoir area. 1805 Comment
  SEINET10448469  Draba verna Mary Susan Taylor 1982-5-7 Taylor 4428 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  CHSC108018  Draba verna var. aestivalis Lowell Ahart; John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS107454  Draba verna var. aestivalis Lowell Ahart, John Dittes 2005-6-1 11901 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS118282  Draba verna var. aestivalis Lowell Ahart, John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CHSC96701  Drosera anglica Gordon Leppig; J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. Peatland i ... Field redacted by CHSC, contact the data manager for more information 1970 Comment
  CAS-BOT-BC401538  Drosera rotundifolia G. Schoolcraft 1997-8-5 2648 Lassen Along Robbers Creek near Robbers Spring 1798 Comment
  CAS-BOT-BC159342  Drymocallis lactea var. lactea Louella Bass 1973-6-14 106 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CAS-BOT-BC159343  Drymocallis lactea var. lactea John Thomas Howell; Gordon H. True 1973-8-1 50224 Lassen East slope of Diamond Range south of Susanville - Sierra Nevada 2133 Comment
  CHSC99982  Elaeagnus angustifolia L. P. Janeway 2008-8-2 9522 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  JEPS121273  Elatine Lowell Ahart, John Dittes 2013-7-23 18890 Lassen Man-made pond, about 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC116199  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20301 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC116201  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20296 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCR198140  Elatine chilensis Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  RSA0011453  Eleocharis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46985 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC113619  Eleocharis acicularis George Wilson Gillett 1957-9-4 1128 Lassen Widow Lake. East margin of lower lake, near inlet; in drying mud. 2072 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  JEPS28331  Eleocharis acicularis George W. Gillett 1957-7-22 878 Lassen Snag Lake Lassen Volcanic National Park (margin of gravel bars along s shore) 1844 Comment
  CDA7765  Eleocharis acicularis var. acicularis G. Schoolcraft 1995-5-22 s.n. Lassen Morgan Spring N of Skedaddle Mtns. Comment
  CHSC66272  Eleocharis bella Vernon H. Oswald 1996-6-24 7851 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow just S of the cabins. 1633 Comment
  UCD62817  Elymus X saundersii Beecher Crampton 1960-6-18 5716 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD62907  Elymus X saundersii Beecher Crampton 1954-7-5 2061 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  JEPS127354  Elymus caput-medusae Lowell Ahart, John Dittes 2016-7-13 21145 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  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
  CHSC7700  Elymus condensatus Beverley J. Wise 1969-5-23 130 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  UCD61417  Elymus elymoides Beecher Crampton 1954-7-5 2065 Lassen Along Hwy. 36, 5.5 miles west of Susanville. 1447 Comment
  UCD61553  Elymus elymoides A. A. Beetle 1941-6-28 2804 Lassen 10 miles W of Chester, rte 36. Comment
  UCR7841  Elymus elymoides Marilyn Malin 1968-6-21 248 Lassen Along roadside, near tree blazed to indicate path to the ice caves on the west side of Eagle Lake Comment
  UC1567377  Elymus elymoides subsp. elymoides G. Schoolcraft 1989-6-19 1917 Lassen Ash Valley RNA/ACEC 1554 Comment
  JEPS128170  Elymus elymoides var. californicus M. C. Mahoney, J. A. Nash 2017-7-20 CA 350 -84 Lassen On Snowstorm Mt. From Susanville take Highway 395 N. Turn left onto an unnamed road that heads west onto Snowstorm Mt. Follow thus rough road for ~5 miles before taking a right onto a road going SE towards Snowstorm Mt. summit. About 1 mile up, the population is on either side of this road. Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  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
  UC60832  Elymus trachycaulus M. S. Baker and Frank Nutting 1894-7-5 Lassen mts. s Dixey Valley Comment
  CHSC92829  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2005-6-1 11880 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS114765  Elymus trachycaulus subsp. subsecundus Lowell Ahart, John Dittes 2008-6-20 14908 Lassen about 100 yds W of where the levee road crosses Bog Valley Canal, in Big Valley, about 4 mi (air) NE of the Headquarters at Ash Creek State Wildlife Area, about 7 mi (air) NE of Bieber 1263 Comment
  JEPS123855  Elymus trachycaulus subsp. trachycaulus Lowell Ahart, John Dittes 2015-7-14 20332 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC76104  Elytrigia elongata Lowell Ahart; Vernon H. Oswald 1999-9-13 8212 Lassen On the edge of a canal, just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1220396  Elytrigia elongata T. C. Fuller 1963-7-15 10887 Lassen 2.9 mi se Pittville (s of road to Little Valley) Comment
  CHSC111258  Ephedra viridis L. P. Janeway; B. Castro 2012-7-3 10940 B Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  CHSC30602  Ephedra viridis L. J. Dawson 1975-7-7 43 Lassen 6 mi from Hwy. 395 on Ravensdale Road. 1584 Comment
  CHSC64747  Ephedra viridis Vernon H. Oswald 1995-6-7 6832 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 9.5, 4.1 mi e of Wendel, ne of Susanville. 1231 Comment
  CHSC89  Ephedra viridis 1928-5-28 Lassen Antelope grade north of Susanville. 1615 Comment
  HSC1306  Ephedra viridis J. W. Bosworth 1965-5-1 31 Lassen 20 mi. N of Susanville on Hwy. 395 1220 Comment
  UC1537115  Ephedra viridis Gordon H. True Jr. 555 Lassen n slope Hot Spring Mountain 1981 Comment
  UC281  Ephedra viridis J. Burtt Davy Jun 17 1897-Jun 24 1897 3342 Lassen Honey Lake Valley Honey Lake Valley (on slopes of lava hills) Comment
  SEINET10738966  Epilobium angustifolium subsp. circumvagum Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 838 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
  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
  HSC95173  Epilobium ciliatum subsp. ciliatum Gordon Leppig, J. Cromwell 1997-7-27 617 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS121238  Epilobium ciliatum subsp. ciliatum Lowell Ahart, John Dittes 2013-7-22 18856 Lassen 30 yards S of the man-made pond, about 120 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC59090  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5183 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Bottom of a cutbank of the creek where it enters the lake. 1853 Comment
  HSC95313  Epilobium oregonense Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 688 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1122350  Epilobium torreyi A. Simontacchi 1940-6-30 905 Lassen 2.2 mi ene Ebey Lake 1699 Comment
  CAS-BOT-BC57307  Equisetum laevigatum John Thomas Howell 1974-7-8 50473 Lassen Susanville 1295 Comment
  JEPS88087  Equisetum laevigatum Vernon H. Oswald and Lowell Ahart 1996-6-17 7820 Lassen ca. 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, at 6 mi post of Devil's Corral Trailhead); Modoc Palteau 1420 Comment
  CAS-BOT-BC57236  Equisetum laevigatum Alice Eastwood; John Thomas Howell 1940-6-11 7996 Lassen Bieber Comment
  SEINET10530241  Equisetum laevigatum Mary Susan Taylor 1982-5-29 Taylor 4566 Lassen 4900 ft. T22N R17E sw/sw sec 23. Loyalton quad. In sandy rd embankment at jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno. 1493 Comment
  SBBG115768  Eragrostis mexicana subsp. virescens J. T. Howell 1976-7-19 51943 Lassen Susanville 1296 Comment
  SEINET8267478  Eremogone congesta L. E. Detling 1936-6-28 1757 Lassen near Susanville. Comment
  CHSC5228  Eremogone congesta var. simulans J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2421 Comment
  CAS-BOT-BC174264  Eremogone congesta var. simulans Walter Knight; Irja Knight; James Vale; Keith Wagnon 1981-5-24 4120 Lassen Between Adin and Willow Creek Comment
  CHSC117206  Eremogone congesta var. subcongesta Lowell Ahart; John Dittes 2016-6-7 20983 Lassen 40 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
  CHSC68745  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1997-5-27 8485 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
  CHSC68856  Eremogone congesta var. subcongesta Vernon Oswald; Lowell Ahart 1997-6-24 8632 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CAS-BOT-BC174282  Eremogone congesta var. suffrutescens H. D. Ripley; R. C. Barneby 1943-6-14 5742 Lassen W. of Susanville 1371 Comment
  CHSC4897  Eriastrum signatum Bill Wilson 1967-7-4 51 Lassen Collected at Dean's Meadow, 6 mi S of Eagle Lake Biological Station. 4 mi. N of Susanville. 1950 Comment
  JEPS19760  Eriastrum signatum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6008 Lassen along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  UC526132  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen near Plumas Junction Comment
  CAS-BOT-BC515169  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen Near Plumas Junction Comment
  OBI77051  Eriastrum sparsiflorum Anthony Baniaga 2011-7-1 410 Lassen CDFB. Bass Hill Wildlife Area W of hwy 395. Janesville quad T29N R13E sec 19 SW of SW 1279 Comment
  UC23553  Eriastrum wilcoxii M. S. Baker and Frank Nutting 1892-7-2 Lassen s side Dixey Mts. Comment
  UC506538  Eriastrum wilcoxii J. Burtt Davy Jun 17 1897-Jun 24 1897 3408 Lassen Amedie Honey Lake Valley Comment
  UC1118874  Ericameria bloomeri A. Simontacchi 1940-7-7 929 Lassen 0.8 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC298170  Ericameria nauseosa var. oreophila Gary Schoolcraft 1984-9-26 1380 Lassen Painter Flat 1706 Comment
  CAS-BOT-BC298179  Ericameria nauseosa var. oreophila John Thomas Howell 1924-8-13 s.n. Lassen Near Doyle Comment
  CAS-BOT-BC298180  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel, on road to Janesville 1219 Comment
  RSA518408  Ericameria nauseosa var. oreophila George K. Helmkamp 1990-9-23 A- 2 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  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-BC294182  Ericameria nauseosa var. speciosa Margaret Williams 1974-8-4 74 -L-71 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC294183  Ericameria nauseosa var. speciosa Clare B. Hardham 1969-8-28 17426 Lassen West of Janesville Comment
  CAS-BOT-BC294187  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50217 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  JEPS21495  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-27 4628 Lassen Susanville Comment
  UC747216  Ericameria nauseosa var. speciosa G. Thomas Robbins 1945-10-7 2152 Lassen 2-3 mi ne of Burgess Spring (Harvey Valley, se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  CAS-BOT-BC293204  Ericameria suffruticosa Clare B. Hardham 1971-8-22 18393 Lassen Diamond Mountain 2133 Comment
  CHSC77193  Ericameria suffruticosa G. Schoolcraft 1997-8-6 Lassen Diamond Mtn. 2316 Comment
  CHSC64863  Erigeron aphanactis var. aphanactis Vernon H. Oswald; Lowell Ahart 1995-6-19 6890 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 3.6 mi e of Hwy. 395. On the s side of the road. 1353 Comment
  JEPS97423  Erigeron aphanactis var. aphanactis Vernon H. Oswald and L. Ahart 1995-6-19 6890 Lassen T30N R15E SE1/4 SE1/4 Sect. 12, 4440 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 3.6 mi e of Hwy. 395. Many-stemmed herbaceous perennial from a branching and tap-rooted caudex 1353 Comment
  CAS-BOT-BC293524  Erigeron aphanactis var. aphanactis Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Ball's Canyon, south of Secret Valley Comment
  CHSC29923  Erigeron bloomeri Robin Ondricek 1978-6-6 35 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1584 Comment
  JEPS94521  Erigeron bloomeri Vernon H. Oswald and Lowell Ahart 1997-5-27 8486 Lassen 38.2 mi n of Susanville (e side of Highway 139 at a small farm pond,, 7.4 mi n of Eagle Lake Road); Highway 139 1627 Comment
  SEINET201632  Erigeron bloomeri A. Cronquist, AH Holmgren 1959-6-17 8460 Lassen 50 mi SE of Susanville Comment
  SEINET3132724  Erigeron bloomeri J. L. Strother 1970-5-23 952 Lassen ca. 6 mi. N of Honey Lk. 1280 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
  GMDRC6952  Erigeron bloomeri var. bloomeri J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31427 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
  GMDRC7734  Erigeron bloomeri var. bloomeri J. M. Andre, G. Clifton 1993-6-1 33411 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  HSC81651  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  JEPS89690  Erigeron bloomeri var. bloomeri Dean Wm. Taylor with Glenn Clifton 1990-6-12 10878 Lassen Forest Road 39N08 just as the road enters the valley as traveling from Adin (Ash Valley, Modoc Plateau); Modoc Plateau, Ash Valley, Forest Road 39N08 1554 Comment
  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
  CAS-BOT-BC297189  Erigeron coulteri G. Schoolcraft 1994-7-6 2358 Lassen About 1 mile west of Boot Lake 2042 Comment
  SEINET8667206 Image available Erigeron divergens M. J. Williams 1984-6-16 84- 31 -1 Lassen Doyle grade, County Hwy 331, 2.6 mi W of Doyle Comment
  UCD131887  Erigeron eatonii var. nevadincola Grady L. Webster 1989-5-13 7719 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC300374  Erigeron eatonii var. plantagineus Alice Eastwood; John Thomas Howell 1940-6-11 7980 Lassen Big Valley Mts. Comment
  UC1609229  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  JEPS95073  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  RSA93190  Erigeron elegantulus F. W. Peirson 1926-6-24 6855 Lassen On Madeline Plain Comment
  POM36253  Erigeron filifolius Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  RSA739690  Erigeron filifolius var. filifolius John Dittes, Scott Chamberlain 2004-6-28 s.n. Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-miles east of Plumas County line. 1512 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
  JEPS97369  Erigeron inornatus var. calidipetris Vernon H. Oswald and L. Ahart 1995-7-24 7146 Lassen T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. 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 1905 Comment
  POM41676  Erigeron inornatus var. inornatus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1136838  Erigeron inornatus var. inornatus L. R. Short and D. Gish 1936-8-3 S- 397 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1795 Comment
  CAS-BOT-BC295506  Erigeron linearis Mrs. C. C. Bruce 1898-6-1 21821 Lassen Madaline [Madeline] Plains Comment
  CHSC92678  Erigeron linearis L. P. Janeway; B. Castro 2005-7-10 8485 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  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
  RSA713117  Erigeron linearis L. P. Janeway, B. Castro 2005-7-10 8485 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge. 1993 Comment
  UC206218  Erigeron linearis Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC31442  Erigeron linearis Mrs. R. M. Austin Jun 1894 Lassen lava bed w Willow Creek Comment
  CHSC12615  Erigeron philadelphicus Jannae Pitts 1972-6-23 265 Lassen On the road to Eagle Lake Field Station, 2 mi se of the station on the e side of the road. Comment
  SEINET8667852 Image available Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  CHSC86949  Erigeron pumilus var. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  UC31462  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC506996  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley 1700 Comment
  CHSC116927  Eriogonum J. P. Bergmann 3011-04-30 Lassen Fort Sage OHV Recreation area. 1450 Comment
  SEINET3836451 Image available Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-2 7772 Lassen Beckwith Pass 1463 Comment
  SEINET5328378  Eriogonum baileyi var. baileyi M. J. Williams 1974-7-26 74 -L-25 Lassen 2 mi. west of Hallelujah Junction, south of Hwy. 70. 1494 Comment
  UC1409081  Eriogonum baileyi var. baileyi R. F. Thorne and C. W. Tilforth 1969-9-6 39260 Lassen ca. 0.7 mi se along Hwy 395 Milford (w of Honey Lake) 1280 Comment
  CHSC25303  Eriogonum caespitosum Pauleen Broyles 1977-5-30 150 Lassen Lava flow ca 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Creek Road, ca 8 km ne of Herlong. 1660 Comment
  SEINET8513012  Eriogonum caespitosum A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 s.n. Lassen Constantia Allotment, West of Peterson's 1490 Comment
  SD232774  Eriogonum cernuum Greg R. Ballmer 1993-7-31 Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, ca. 2 0 5 mi. (airline) W. of Nevada border Comment
  NY242502  Eriogonum collinum G. Schoolcraft 1983-6-28 1021 Lassen East side of Mud Flat. 31-15-26 1341.1 Comment
  RSA0027359  Eriogonum elatum John F. Emmel 1994-7-18 1334 Lassen North end of Fort Sage Mtns; 1.0 air mi north and 0.7-0.9 air mi east of Indian Spring. 1707 Comment
  CAS-BOT-BC263045  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  CHSC65157  Eriogonum maculatum Vernon H. Oswald; Lowell Ahart 1995-7-5 6961 Lassen North of Honey Lake on Smoke Creek Ranch Rd., 1.2 mi w of the Nevada-California state line. 1335 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
  NY430489  Eriogonum marifolium G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mountain 2316.5 Comment
  CAS-BOT-BC267342  Eriogonum marifolium var. marifolium Clare B. Hardham 1971-8-22 18402 Lassen Diamond Mountain 2346 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
  NY430485  Eriogonum microthecum var. ambiguum G. Schoolcraft 1999-7-28 2871 Lassen Ridge on east end of Skedaddle Mountains 2133.6 Comment
  NY282208  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-9-8 912 Lassen In Robinson Canyon west of Doyle Ca. 1585.0 Comment
  SEINET245664  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mi west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  UCD13226  Eriogonum nudum Janet Browder 1973-6-3 98 Lassen Lassen CO. Eagle Lake recreation Area, County Road 201, 1 mile north of airport. Elevation 5100 feet. 1554 Comment
  CHSC106170  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  UCR67381  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M 4 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CAS-BOT-BC261446  Eriogonum nudum var. nudum Mike Vasey 1990-6-30 9056 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CHSC13698  Eriogonum nudum var. pubiflorum J. Wolf 1946-6-24 Lassen MeCoy Flat. Eagle Lake. 1645 Comment
  CHSC67061  Eriogonum nudum var. pubiflorum Willis Ball 1969-6-27 50 Lassen Found about 50 yds. S. of Gallatin Beach. Growing beside Gallatin Beach Parking Lot. 1561 Comment
  CHSC87119  Eriogonum nudum var. pubiflorum L. P. Janeway 2001-6-20 7204 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC1137674  Eriogonum nudum var. pubiflorum L. R. Short and Wm. Gansberg 1936-7-3 S- 474 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  SEINET5333908  Eriogonum ochrocephalum D. Tonenna 2007-8-20 s.n. Lassen Hwy 395, 6 mi north of Halellujah Junction along west side of road. 1450 Comment
  SEINET523073  Eriogonum ochrocephalum var. ochrocephalum Paul Opler 2002-6-22 Lassen US 395, 1 mi. S. Hallelotah junction. Comment
  NY282047  Eriogonum ovalifolium var. nevadense G. Schoolcraft 1982-6-28 738 Lassen Ft. Sage Mtns. 762.0 Comment
  UC1609436  Eriogonum ovalifolium var. nivale Vernon H. Oswald and Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd.(33N02) 1.7 mi n Hwy 44 (e of Poison Lake, e side of Grays Valley); Grays Valley 1719 Comment
  UCD55294  Eriogonum ovalifolium var. ovalifolium Ellen Dean; Gary Schoolcraft 2006-5-16 3115 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  OBI76937  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen Natl forest. NW of intersection of 29N02Y and the "B" spur. Fredonyer Pass quad T29N R10E sec 22 SE of NE 1630 Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  UC6570  Eriogonum prociduum Mrs. R. M. Austin June, 1894 Lassen Willow Creek Valley Comment
  CHSC68901  Eriogonum spergulinum var. reddingianum Vernon Oswald; Lowell Ahart 1997-6-24 8596 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). Along the edge of the road. 1685 Comment
  UC6621  Eriogonum spergulinum var. reddingianum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UCR248329  Eriogonum sphaerocephalum Elizabeth A. Kempton 2007-8-15 512 Lassen Near Basehill landfill 1282 Comment
  CHSC68755  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald; Lowell Ahart 1997-5-27 8491 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  CHSC89739  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2004-6-26 8142 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
  RSA31953  Eriogonum sphaerocephalum var. halimioides A. A. Heller 1938-6-23 15214 Lassen south of Secret Valley on U.S. Highway #395. 1372 Comment
  UC1609360  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald and Lowell Ahart 1993-7-8 5674 Lassen 1.4 mi ssw Pittville Rd. (Lassen 111, 36N01) (e side of Hall's Flat Rd. (33N18), ca. 5.4 air mi nw of Poison Lake) 1694 Comment
  NY283128  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Jonesville on Highway 395. Comment
  RSA125406  Eriogonum sphaerocephalum var. sphaerocephalum Arthur R. Kruckeberg 1954-6-22 3323 Lassen Frequent on sagebrush antelope brush slopes betw Susanville and Jonesville on Hwy 395 Comment
  RSA0029191  Eriogonum strictum John F. Emmel 1997-6-8 1491 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 Comment
  CHSC12967  Eriogonum strictum var. anserinum K. R. Stern 1974-6-26 5865 Lassen E end of Champs flat. Comment
  UC412821  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  SBBG1643  Eriogonum umbellatum H. and M. Dearing 1938-6-30 2235 Lassen 20 mi N of Susanville [Hwy 44] 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
  HSC17377  Eriogonum umbellatum var. modocense M. T. Milligan 1964-7-17 144 Lassen 3.5 mi. W of Eagle Lake Rd. on Marrill Flat Rd. 1677 Comment
  CAS-BOT-BC265091  Eriogonum umbellatum var. nevadense John Thomas Howell 1976-7-19 51951 Lassen Southwest of Susanville on Gold Run Road, Sierra Nevada 1341 Comment
  CAS-BOT-BC265100  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Slope south of Ravendale on U.S. Highway #395 Comment
  JEPS56240  Eriogonum umbellatum var. nevadense Hilda W. Grinnell 1928-6-26 Lassen inside crater-rim of Cinder Cone Lassen Volcanic National Park 2103 Comment
  JEPS97420  Eriogonum umbellatum var. nevadense Vernon H. Oswald and L. Ahart 1995-6-19 6888 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Loosely cespitose perennial 1350 Comment
  SD52313  Eriogonum umbellatum var. nevadense F. Stephens 1894-7-7 9210 Lassen Pete's Valley Comment
  UC584410  Eriogonum umbellatum var. nevadense G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2310 Lassen w Milford (crest of range head of Stony Ridge); Stony Ridge 1930 Comment
  UC585250  Eriogonum umbellatum var. nevadense E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1756 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UCR208066  Eriogonum umbellatum var. polyanthum L. P. Janeway 2004-6-26 8157 Lassen High Cascade Range, about 1.3 km WSW of Patterson Flat, at junction of roads 35N08 and 35N20, in Blacks Mountain Experimental Forest 1750 Comment
  CAS-BOT-BC262364  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  CHSC12414  Eriogonum vimineum Anne Linda Brisk 1969-6-21 16 Lassen 1/4 mi NE of ELBS. 1554 Comment
  JEPS56158  Eriogonum vimineum W. L. Jepson 1918-8-5 7817 Lassen Madelin Plains 1615 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
  POM195124  Eriogonum vimineum D. D. Keck 1930-7-23 951 Lassen Susanville. 1280 Comment
  JEPS56155  Eriogonum vimineum Alma U. Ames 1917-10-9 50 Lassen 25 mi n, on Hat Creek Road Mt. Lassen Comment
  SEINET11933856  Eriogonum vimineum N. H. Holmgren, Holmgren, P. K. 1980-1 9493 Lassen Rye Patch Canyon Rd, 3.4 km (2.1m) E of US Hwy 395, 14.5 km (9mi) airline distance SE of Ravendale 1700 Comment
  JEPS96132  Eriophorum gracile Vernon H. Oswald and Lowell Ahart 1996-6-24 7888 Lassen 2.5 mi. s. Eagle Lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), e. side Papoose Meadows, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC12492  Eriophyllum lanatum Carol Weld 1969-6-20 9 Lassen Dean's Meadow. 1950 Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  CHSC67057  Eriophyllum lanatum Willis Ball 1969-6-19 9 Lassen Found approx. 1/2 mile N. of E.L.B.S. Near old Eagle Lake basin. 1584 Comment
  CAS-BOT-BC308138  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake 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
  UC1142994  Eriophyllum lanatum var. achilleoides August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest, Harvey Mtn. 2133 Comment
  CAS-BOT-BC301528  Eriophyllum lanatum var. integrifolium Ralph K. Gierisch 1968-7-11 3355 Lassen Lassen National Forest. Highway 44 1737 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  CHSC7701  Erodium cicutarium Beverley J. Wise 1969-4-28 43 Lassen Susanville City Limits - Junction of Chestnut Sty. and Hwy 139, South side of Chestnut St. 1310 Comment
  CHSC58831  Eryngium alismifolium Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  UC1487305  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UC1508837  Eryngium alismifolium Gary Schoolcraft 1981-8-11 558 Lassen Silva Flat Reservoir 1706 Comment
  SEINET8673813  Eryngium alismifolium Ornduff 1958-7-22 5014 Lassen along Highway 395, 6.6 miles north of Ravendale Comment
  UC477504  Erysimum capitatum var. capitatum Geo. O. Fisher 1928-6-21 28 Lassen Lassen <National> Forest 1615 Comment
  UC773887  Erysimum capitatum var. capitatum L. R. Short and B. H. Short 1936-6-15 S- 437 Lassen Longs Well Lassen Forest 1712 Comment
  CAS-BOT-BC55195  Erysimum repandum Louella Bass 1982-5-30 s.n. Lassen Near Karls RR Station on Karls Road northeast of Susanville. Comment
  POM203959  Erysimum repandum J. T. Howell 1934-6-10 11904 Lassen 3 miles S of Ravendale. Comment
  CHSC5904  Erythranthe guttata M. West 1946-6-15 Lassen So. end Eagle Lake. 1584 Comment
  CHSC61240  Erythranthe guttata P. V. Caldwell 1972-6-23 244 Lassen Headwaters of Willow Creek, Upper Murer's Meadow, along creek bank. Eagle Lake. Comment
  SEINET13768666 Image available Erythranthe guttata Francis W. Pennell 1940-1 25777 Lassen Route 36, 6 miles east of Westwood. 1585 Comment
  RSA0049634  Erythranthe inflatula Dean Wm. Taylor 2012-6-6 21224 Lassen Moll Reservoir (ca.10 air miles E of Adin), west side of the reservoir 1603 Comment
  CAS-BOT-BC151473  Erythranthe latidens James Jokerst 1983-7-23 1872 Lassen Grasshopper Valley Quad., near Madeline Plains 1614 Comment
  CHSC5909  Erythranthe primuloides J. B. Kimsey 1946-6-20 Lassen Grasshopper Valley. 1615 Comment
  CHSC71102  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1998-5-22 9123 Lassen Road to Summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CHSC93671  Erythranthe suksdorfii Lowell Ahart; John Dittes 2005-6-2 11963 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
  UCD139645  Erythronium multiscapideum W. W. Robbins 1926-4-17 541 Lassen Grass Valley. Comment
  SFV18615  Eschscholzia caespitosa T. W. Nelson, J. P. Nelson 1990-7-14 8777 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  CAS-BOT-BC403150  Eschscholzia californica A. M. Vollmer; L. Beane 1953-7-1 103 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC110771  Euphorbia crenulata Dean Wm. Taylor 2012-7-18 21273 Lassen Pumice flat nestled in the cones about 2 miles South of the south end Poison Lake (along Highway 44). 1783 Comment
  CHSC5248  Euphorbia crenulata L. Harman 1946-6-23 Lassen Eagle Lake. Near top of Roop Mt. 2133 Comment
  UCD39131  Euphorbia crenulata Beecher Crampton 1964-6-25 7072 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  SEINET12143360  Euphorbia serpillifolia Unknown 1978-1 103 Lassen along dirt road near Miners Point, SE end of Eagle Lake 1585 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
  CAS-BOT-BC278432  Festuca idahoensis Clarence R. Quick 1961-6-21 61 -28 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC278437  Festuca idahoensis John Thomas Howell 1934-7-6 12430 Lassen Hall's Flat Comment
  CHSC99481  Festuca idahoensis Lowell Ahart; John Dittes 2008-6-19 14880 -A 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
  JEPS123453  Festuca idahoensis Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -142 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  RSA0037004  Festuca idahoensis Lowell A. Ahart, John Dittes 2008-6-19 14880 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UCD37476  Festuca idahoensis Beecher Crampton 1960-6-18 5715 Lassen Southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UCD66094  Festuca idahoensis C. R. Quick 1962-6-17 62- 30 Lassen Western Pacific RR, south of Halls Flat. 1706 Comment
  CAS-BOT-BC278433  Festuca idahoensis Clarence R. Quick 1962-6-17 62 -30 Lassen Western Pacific RR., S. of Halls Flat, Susanville-Pittville road near Blacks Mt. Experimental Station 1706 Comment
  UC188917  Festuca rubra Milo S. Baker Lassen Eagle Lake Comment
  UCD66348  Festuca rubra L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  UC1130345  Floerkea proserpinacoides Robert W. Gardner 1937-6-14 G 4 Lassen Burgess Spring Experiment Range 1798 Comment
  CHSC60393  Fragaria virginiana Mary Ann Showers 1992-6-12 2521 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  POM76343  Fraxinus dipetala C. C. Bruce 1897-7-3 s.n. Lassen Janesville(?), below Prattville 1372 Comment
  CAS-BOT-BC504438  Fritillaria atropurpurea John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50694 Lassen South and southeast of Diamond Mt., Sierra Nevada 2286 Comment
  CHSC25565  Fritillaria pudica Robert A. Schlising 1977-4-4 3187 Lassen East of Eagle Lake Field Station, along dirt road at Murrers Upper Meadow. 1554 Comment
  RSA647556  Galium aparine Marion P. Harthill 1972-6-16 s.n. Lassen Doyle. Comment
  UC773944  Galium bifolium L. R. Short and W. Gansberg 1926-6-2 S- 368 Lassen Lassen National Forest 1850 Comment
  POM203777  Galium bolanderi J. T. Howell 1934-7-3 12381 Lassen Near Dry Lake. Mtns. SE of Bieber. Comment
  OBI75867  Galium triflorum Anthony Baniaga 2011-8-9 493 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  HSC87162  Gayophytum diffusum J. D. Prouty 1978-6-27 1 Lassen E of Eagle Lake, Black Mt. Rd., SE of Eagle Lake Field Station 1616 Comment
  JEPS117572  Gayophytum diffusum subsp. diffusum Lowell Ahart, John Dittes 2010-7-31 17020 A Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  RSA719874  Gayophytum diffusum subsp. diffusum Michael A. Vincent, K. Levings 2006-7-29 12902 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  POM38697  Gayophytum diffusum subsp. parviflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC25091  Gayophytum heterozygum K. R. Stern 1967-7-1 2469 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  RSA122206  Gayophytum humile L. R. Short, J. Warren 1936-6-23 S 450 Lassen Burgess Spr. Exp. Range, Lassen National Forest 1762 Comment
  POM38703  Gayophytum racemosum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 Comment
  NY1101445  Geranium viscosissimum var. nervosum B. M. Bartholomew 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains. 2080 Comment
  UC1037208  Geum macrophyllum var. perincisum Leo Whitney 1933-8-14 1568 Lassen 8 mi nw of Eagle Lake (Lassen National Forest, Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UCD39130  Geum triflorum Beecher Crampton 1964-6-25 7067 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  RSA122289  Geum triflorum var. ciliatum K. e. Bradshaw 1939-5-27 25210 Lassen Near S end of Black Mtn EF Plot 39-4. 1738 Comment
  SBBG70512  Geum triflorum var. ciliatum E. Rockwell -Jun-1925 934 Lassen Eagle Lake 1554 Comment
  CHSC106568  Gilia inconspicua K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  JEPS107828  Gilia inconspicua Lowell Ahart, John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  RSA104236  Gilia malior Verne Grant, Alva Grant 1956-5-17 21753 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  RSA95713  Gilia modocensis Verne Grant 1955-6-8 9668 Lassen 3.6 mi n of Halleluja Jct. on hwy 395. 1311 Comment
Read comments
May 2 2012
  RSA95716  Gilia modocensis Verne Grant 1955-6-8 9666 Lassen c. 2 miles north of Doyle. 1311 Comment
Read comments
May 2 2012
  CHSC93697  Gilia ochroleuca Lowell Ahart; John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  RSA28121  Gilia salticola Elmer I. Applegate 1934-5-4 8914 Lassen South end of Secret Valley Comment
  SD131882  Gilia salticola Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mountains on northeast side of Honey Lake, talus slopes at base of rimrock on south side of Hot Springs VABM 2286 Comment
  JEPS109641  Gilia sinistra subsp. sinistra Dean W. Taylor 2002-6-21 18171 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  JEPS69702  Gilia sinuata J. W. Blankinship 1911-11-29 Lassen Red Rock Comment
  SBBG52268  Gilia sinuata C. Davidson 1975-6-7 2756 Lassen 1 mi E of Beckwourth Pass on Hwy 70 Comment
  CAS-BOT-BC283865  Glyceria borealis George W. Gillett 1957-7-26 922 Lassen Lassen Volcanic National Park. Near shore of Butte Lake 1844 Comment
  CHSC99290  Gnaphalium palustre Lowell Ahart; John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS121245  Gnaphalium palustre Lowell Ahart, John Dittes 2013-7-22 18861 Lassen 30 yards S of the man-made pond, about 120 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS127281  Gnaphalium palustre Lowell Ahart, John Dittes 2016-7-13 21108 Lassen About 150 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
  RSA0105586  Gnaphalium palustre Lowell Ahart, John Dittes 2013-7-22 18861 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC302591  Gnaphalium palustre John Thomas Howell 1959-9-23 s.n. Lassen Lassen Volcanic National Park. Beach at se. end of Juniper Lake 2057 Comment
  UC1533149  Gratiola ebracteata G. Schoolcraft 1986-7-28 1664 Lassen along edge Moll Res. (w of Ash Valley); w of Ash Valley 1606 Comment
  HSC104131  Grayia spinosa H. Chappel, J. Goldhammer 2002-5-30 - 2 Lassen Southeast of Susanville. 1248 Comment
  UCD132463  Grindelia nana Dan Marcum 1978-7-3 s.n. Lassen exact location unknown. Comment
  JEPS124632 Image available Grindelia nana Himayat H. Naqvi 1965-7-13 164 Lassen Near pit river overflow number 7-05. Comment
  CHSC60757  Gymnosteris parvula Vernon H. Oswald; Lowell Ahart 1993-6-3 5485 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. In a meadow. 1731 Comment
  SEINET3818101  Habenaria leucostachys A. A. Heller 1938-1 Lassen Comment
  HSC69598  Hackelia californica Gary Schoolcraft 1980-7-15 310 Lassen W of Biebes 1799 Comment
  UC1537393  Hackelia floribunda Gordon H. True Jr. 1936-6-27 562 Lassen n slope of Hot Spring Mountain 1828 Comment
  CDA36354  Halogeton glomeratus B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  RSA97605  Halogeton glomeratus Edward Bass 1951-9-19 s.n. Lassen Herlong. Comment
  UCD98894  Halogeton glomeratus Thos. H. Kearney; John Thomas Howell 1951-8-20 28229 Lassen Honey Lake Valley near Herlong. 1280 Comment
  CAS-BOT-BC314765  Helianthella californica var. nevadensis G. Schoolcraft 1988-7-11 1822 Lassen About 1 mile S. of Hwy. 44 on road to Goumaz 1645 Comment
  SJSU8893  Helianthella californica var. nevadensis W. Savage 1971-7-20 723 Lassen c. 2 mi N of Milford near W side Honey L 1264 Comment
  JEPS124644 Image available Helianthus annuus M. R. Kempf 1965-7-12 284 Lassen [...] miles south of Milburn on Hwy 395- Sierra Valley. Comment
  CDA18385  Helianthus bolanderi G. D. Barbe 1978-8-31 2424 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  JEPS25527  Helianthus cusickii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7141 Lassen beside Hwy 395 one-fourth mi s of junction road to Smoke Creek 1341 Comment
  RSA0012972  Helianthus nuttallii subsp. nuttallii H. L. Mason 1947-8-11 13492 Lassen Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  CHSC68846  Hemizonella minima Vernon Oswald; Lowell Ahart 1997-6-24 8592 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  CHSC92717  Hemizonella minima L. P. Janeway; B. Castro 2005-7-10 8481 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
  UC174811  Hemizonella minima T. S. Brandegee 1892-6-26 Lassen Milford Comment
  HSC29978  Hesperochiron californicus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19191 Lassen Harvey Valley near Cone Springs Comment
  RSA0128926  Hesperochiron californicus Christopher Davidson 1975-6-6 2719 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  RSA122623  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley. Lassen Forest. 1707 Comment
  CHSC61155  Hesperochiron pumilus Vernon H. Oswald; Lowell Ahart 1993-5-12 5382 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 ( to Westwood) and Poison Lake, on the edge of a large meadowy opening covered with sagebrush scrub along Pine Creek. 1737 Comment
  SEINET5499822  Hesperochiron pumilus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC65038  Hesperolinon micranthum Vernon H. Oswald; Lowell Ahart 1995-7-5 6957 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  POM87380  Hesperolinon micranthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1601274  Hesperolinon micranthum Leo Whitney 1934-9-5 1889 Lassen between Susanville and Westwood; Lassen National Forest, Fredonyer Pass 1706 Comment
  UC867806  Hesperolinon micranthum C. L. Hitchcock 1940-5-26 6618 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  CAS-BOT-BC280678  Hesperostipa comata William Rothstrom 1975-6-9 s.n. Lassen Johnstonville. 1/4 mile south of Hwy. 395, west of airport 1264 Comment
  JEPS87469  Hesperostipa comata Vernon H. Oswald and Lowell Ahart 1993-6-14 5542 Lassen n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  CHSC50819  Heterotheca villosa var. minor Vernon Oswald; Lowell Ahart 1990-7-25 4397 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. Roadside. 1463 Comment
  CHSC72301  Heterotheca villosa var. minor L. P. Janeway; Glenn Clifton 1998-7-9 5740 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  RSA783327  Heterotheca villosa var. minor R. R. Halse 2010-8-26 8091 Lassen Along State Hwy 70 at Beckwourth Pass ca. 4.3 miles west of its junction with US Hwy 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  UC1562324  Heterotheca villosa var. minor Vernon Oswald and Lowell Ahart 1990-7-25 4397 Lassen 2.2 mi w Hwy 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  RSA0009648  Heterotheca villosa var. minor Marcus E. Jones 1897-6-18 s.n. Lassen Chat Comment
  NY783478  Heuchera rubescens G. Schoolcraft 1982-6-23 728 Lassen Fort Sage Mountains 1828.8 Comment
  CAS-BOT-BC312419  Hieracium albiflorum John Thomas Howell; Gordon H. True 1973-7-31 50025 Lassen Road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  CAS-BOT-BC312420  Hieracium albiflorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49448 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  UC135018  Hieracium albiflorum T. S. Brandegee 1892-7-2 s. n. Lassen Susanville Comment
  CAS-BOT-BC318714  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  HSC103617  Hieracium horridum Thomas W. Nelson, Jane Nelson 1985-8-10 8020 Lassen Along west side of Silver Lake. 1829 Comment
  UC897899  Hieracium nudicaule A. A. Heller 1938-7-28 15301 Lassen about a mi e Westwood (edge of s swamp) 1524 Comment
  HSC93305  Hieracium nudicaule Vernon H. Oswald, L. Ahart 1996-8-1 8129 Lassen F.S. Rd. 28N56 (D-Line) ca. 0.6 mi. NNW of Dyer Mtn. Lookout, SSW of Westwood 2012 Comment
  RSA32855  Hieracium scouleri A. A. Heller 1938-7-28 15301 Lassen About 2 miles east of Westwood. 1524 Comment
  JEPS105682  Hieracium scouleri L. P. Janeway 2001-6-20 7196 Lassen along 22 Road about 1.8 km W of Black Hole, about 11.9 km N-NE of Harvey Mountain 460 Comment
  CHSC99281  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UCD85482  Hordeum brachyantherum L. Whitney 1935-3-28 Lassen Fruit Growers Supply Co. Camp #10. Comment
  CHSC5060  Hordeum jubatum D. L. Stites 1967-6-25 54 Lassen Ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  UC1137163  Hordeum jubatum August L. Hormay 1932-8-12 Lassen e edge Eagle Lake; Lassen National Forest, e edge Eagle Lake Comment
  UCD85742  Hordeum jubatum Gerald Dickinson 1963-7-15 99 Lassen Ravenville. US Hwy 395. 1618 Comment
  UCD85755  Hordeum jubatum August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  CAS-BOT-BC289575  Hordeum marinum subsp. gussoneanum Geo. A. Fischer 1928-5-27 23 Lassen Willow Springs, Lassen Forest 1280 Comment
  UCD55288  Hordeum murinum subsp. glaucum Ellen Dean; Gary Schoolcraft 2006-5-16 3107 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  CAS-BOT-BC284897  Hordeum murinum subsp. leporinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49208 Lassen Elysian Valley northwest of Janesville 1325 Comment
  JEPS114764  Hordeum murinum subsp. leporinum Lowell Ahart, John Dittes 2008-6-20 14915 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
  UC1924232  Hordeum murinum subsp. leporinum Debra Valov 2004-6-9 2004262 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC36189  Horkelia fusca subsp. parviflora M. S. Taylor; B. Hammond 1982-7-8 4789 Lassen Along spur rd ca. 1/3 mi w of Scott Rd, ca. 1.5 mi ne of Beckwourth Pass. 1463 Comment
  UC538008  Horkelia fusca subsp. tenella Leo Whitney 1938-7-3 3038 Lassen Bogard Ranger Station Lassen National Forest 1767 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
  JEPS74735  Horkelia tridentata subsp. flavescens G. S. Crew and C. S. Robinson 1927-6-25 24 Lassen near Wetwood Junction; Lassen Forest, Norval Flat 1442 Comment
  CAS-BOT-BC213004  Hosackia crassifolia John Thomas Howell; Gordon H. True 1973-7-31 50036 Lassen In areas of granitic rock on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  SEINET183889  Hydrophyllum capitatum var. alpinum L. Constance 1938-7-10 2325 Lassen 0.5 miles W of Fredonyer Pass. 1676 Comment
  CAS-BOT-BC312843  Hymenoxys lemmonii J. E. Stuart 1930-6-1 s.n. Lassen Eight miles south of Constantia on the Reno Road Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  CHSC41841  Hypericum formosum var. scouleri P. V. Caldwell 1972-7-13 271 Lassen Eagle Lake. Growing scattered on edge of upper Papoose Creek above forest road to Papoose Meadows. Comment
  CHSC5007  Hypericum formosum var. scouleri L. G. Bennett 1967-7-8 123 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC66726  Hypericum formosum var. scouleri Vernon H. Oswald; Lowell Ahart 1996-8-1 8127 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. Common on a wet, open meadowy slope in mixed coniferous forest on the downhill side of the road. 1737 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
  UC117500  Idahoa scapigera T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  HSC69298  Idahoa scapigera Gary Schoolcraft 1980-4-8 203 Lassen E side of Schaffer Mtn., 0.25 mi. W of Hwy. 395 1463 Comment
  SEINET10904184  Idahoa scapigera David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17766 Lassen Approx. 12 Mi. S. Of adin on ca. Hwy 139, in basalt and clay; along edge or rd. On rolling knoll, in artemesia juniper assoc. 1372 Comment
  JEPS94604  Ipomopsis congesta subsp. congesta Vernon H. Oswald and Lowell Ahart 1997-5-27 8493 Lassen w side of Hwy 139 s Willow Creek Guard Station (0.9 mi s of Forest Rd. 38N04 to Coyote Flat) 1577 Comment
  CHSC107328  Iris hartwegii subsp. hartwegii Lowell Ahart; John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley. 1264 Comment
  JEPS17345  Iris missouriensis W. L. Jepson 1918-8-4 7811 Lassen Horse Lake 1554 Comment
  RSA0025413  Isoetes nuttallii Forrest Freund 2013-5-23 194 Lassen HWY 44. Near pond on the south west side of the road, in open patches. 1716 Comment
  UC2062873  Isoetes nuttallii Forrest Freund 2016-5-19 258 Lassen Pappoose meadow. Comment
  CHSC77255  Isolepis G. Schoolcraft 1997-8-4 2675 Lassen W of Willow Creek Valley. 1554 Comment
  CAS-BOT-BC324778  Iva axillaris P. Monnet 1913-7-4 826 Lassen Honey Lake 1219 Comment
  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
  UC177069  Iva axillaris subsp. robustior T. S. Brandegee 1892-6-25 Lassen Honey Lake Honey Lake Comment
  CAS-BOT-BC123376  Ivesia paniculata T. W. Nelson; J. P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 miles E of Adin. 1554 Comment
  CAS-BOT-BC148542  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  CAS-BOT-BC148543  Ivesia paniculata James R. Shevock 1986-7-20 11740 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles west of Madeline and U.S. highway 395 - Modoc Plateau 1550 Comment
  UC1567359  Ivesia paniculata G. Schoolcraft 1980-7-14 306 Lassen w of Madeline; Ash Valley 1548 Comment
  SEINET10891010 Image available Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 Nelson 5984 Lassen T38N, R11W, S. 31 & 32. Ash Valley along Adin-Madeline Rd. 16 miles east of Adin. Sagebrush steppe. 1554 Comment
  UC1100958  Juncus balticus Herbert L. Mason and Verne Grant 1947-7-9 13297 Lassen 5 mi e Bieber Comment
  UC1745663  Juncus balticus Annetta M. Carter 1945-9-30 1725 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC1142944  Juncus balticus subsp. ater A. L. Hormay 1941-6-18 4 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC1567409  Juncus bufonius G. Schoolcraft 1989-7-18 1981 Lassen near Bucks Spring (s of Clarks Valley Road) 1874 Comment
  JEPS96127  Juncus bufonius var. occidentalis Vernon H. Oswald and Lowell Ahart 1996-6-24 7838 Lassen ca 0.5 mi s Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  JEPS67093  Juncus confusus Brown and Wieslander 1922-7-23 69 Lassen Martin Springs Eagle Lake Comment
  SD71006  Juncus howellii John Thomas Howell 1959-9-23 34880 Lassen North end of Juniper Lake. 2057 Comment
  SEINET3507367 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  UC1100948  Juncus mexicanus Malcolm A. Nobs and S. Galen Smith 1947-8-1 8230 Lassen irrigation ditch running sw into State Fish & Game nesting area on w end of Section 19 Madeline Plain Comment
  UC1136936  Juncus mexicanus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 238 Lassen Patterson Flat Lassen National Forest 1737 Comment
  JEPS28706  Juncus nevadensis George W. Gillett 1957-7-28 934 Lassen Widow Lake Lassen Volcanic National Park 2072 Comment
  SEINET7421843 Image available Juncus nevadensis A. L. Hormay 1941-1 25440 Lassen Sec. 31, T 33N, R 9 E, Little Harvey Valley. Altitude 5500 ft. 1676 Comment
  JEPS121289  Juncus nevadensis var. nevadensis Lowell Ahart, John Dittes 2013-7-23 18906 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  HSC103607  Juncus orthophyllus Thomas W. Nelson, Jane Nelson 1985-8-10 8002 Lassen Along north side of Silver Lake 1829 Comment
  POM110894  Juncus orthophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  JEPS107949  Juncus tiehmii Lowell Ahart, John Dittes 2005-6-2 11959 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
  CHSC13798  Juniperus occidentalis Cathy Crittenden 1970-7-8 26 Lassen About 300 yds. From five corners on road to Mahogany Lake. 1767 Comment
  CHSC66  Juniperus occidentalis K. McKenzie 1928-4-10 Lassen Near Bieber in Big Valley. Comment
  RSA78920  Juniperus occidentalis E. K. Balls, P. C. Everett 1952-10-10 18141 Lassen 8 mi SE of ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UC1134311  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ene Chats; Sierraville Quad. 1569 Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
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Apr 29 2013
  UCR164308  Juniperus occidentalis Maile Neel 2000-4-29 G- 3 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  RSA597841  Juniperus occidentalis var. occidentalis F. C. Vasek 1964-9-12 640912 -8 Lassen Road to Karlo, 3.8 miles from its junction with the Litchfield - Leavit Road 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
  RSA121075  Kelloggia galioides L. R. Short, D. Gish 1936-6-10 S- 379 Lassen Burgess Spr. Exp. Range. Lassen Forest. (MDM?) 1814 Comment
  UC1136752  Kelloggia galioides George A. Fischer and Irwin H. Johnson 1933-7-14 255 Lassen Lassen National Forest 1783 Comment
  CHSC99520  Koeleria macrantha Lowell Ahart; John Dittes 2008-6-19 14896 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
  CHSC5032  Lactuca serriola L. B. Barlow 1967-7-6 96 Lassen 2 mi. west of Murrer's Ranch turn off, 14.9 mi. north of Susanville, Highway 139. 1463 Comment
  CDA7521  Lactuca tatarica subsp. pulchella Lee Wheeler 1964-7-15 Lassen Around railroad station, Litchfield. 0 Comment
  UCD106192  Ladeania lanceolata D. P. Browne 1918-5-1 s.n. Lassen Hackstaff. Comment
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Jun 30 2012
  CAS-BOT-BC341481  Lagophylla ramosissima Barrett Anderson 1986-7-9 3122 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  CHSC66374  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1996-6-17 7782 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Along the trail at the 7 mile post on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  JEPS114637  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
  RSA0035916  Lasthenia glaberrima Lowell A. Ahart, John Dittes 2008-6-20 14901 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1573178  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout (.5 mi s of the Modoc County Line); Pit River Watershed, Big Valley 1249 Comment
  POM29621  Lathyrus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC1137764  Lathyrus brownii August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  UC1584016  Lathyrus lanszwertii var. aridus G. Schoolcraft 1990-5-15 2043 Lassen about 2 mi s Nubieber; John's Valley 1402 Comment
  CHSC106679  Layia glandulosa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC7632  Layia glandulosa Beverley J. Wise 1969-5-3 25 Lassen 4.3 mi. east on Las. Co. Rd. 338 beyond junction with Hwy 395. 1554 Comment
  CAS-BOT-BC321494  Layia glandulosa John Thomas Howell 1962-6-19 37888 Lassen Sagebrush flat, 3 mi S of Hallelujah Junction 1524 Comment
  SEINET11447818 Image available Layia glandulosa M. S. Baker 1905-1 s.n. Lassen Dixey Valley Comment
  SEINET11807266  Layia glandulosa N. H. Holmgren, Holmgren, P. K. 1980-1 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  HSC95316  Lemna minuta Gordon Leppig 1998-8-17 1048 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET11586251  Lemna trisulca B. L. Wilson, R. Brainerd, D. Lytjen, B. Newhouse, N. Otting 2004-8-24 11166 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, W of an old railroad right of way 1463 Comment
  UC1101266  Lemna trisulca Malcolm A. Nobs, S. Galen Smith 1949-7-22 1076 Lassen 10 mi n of Susanville (along Willow Creek, Willow Creek Valley); Willow Creek Valley, Willow Creek Comment
  SD117142  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek, at bridge on Highway 139, approximately10 miles north of Susanville. 1509 Comment
  CAS-BOT-BC88739  Lepidium appelianum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-16 16529 Lassen 4.1 miles east of Bieber. Comment
  CAS-BOT-BC88740  Lepidium appelianum Mrs. H. C. Cantelow 1935-6-8 875 Lassen 6 miles north of Bieber. Comment
  CHSC112401  Lepidium campestre Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18782 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CDA42959  Lepidium chalepense L. Ahart, John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. Comment
  CAS-BOT-BC88939  Lepidium dictyotum Arnold Tiehm 1980-5-29 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air mile north-northwest of Wendel. 1231 Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. Comment
  CHSC64873  Lepidium perfoliatum Vernon H. Oswald; Lowell Ahart 1995-6-19 6899 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Near the road. 1383 Comment
  JEPS95756  Lepidium perfoliatum Vernon H. Oswald and L. Ahart 1995-6-19 6899 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  CAS-BOT-BC12812  Lepidium perfoliatum Margaret Williams 1974-7-27 74 -L-48 Lassen Sierra Nevada. Near Hallelujah Junction west of Highway 70. 1493 Comment
  CAS-BOT-BC12815  Lepidium perfoliatum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. Comment
  CHSC68896  Leptosiphon ciliatus Vernon Oswald; Lowell Ahart 1997-6-24 8605 .1 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
  POM74003  Leptosiphon ciliatus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  POM253335  Leptosiphon harknessii A. A. Heller 1939-7-28 15299 Lassen About a mile east of Westwood in the Arid Transition Life zone 1524 Comment
  POM74199  Leptosiphon harknessii Marcus E. Jones 1897-7-2 10394 Lassen Susanville 1524 Comment
  CAS-BOT-BC508368  Leucocrinum montanum M. Lavin; K. Lavin 1982-5-16 4067 Lassen 1.5 miles east of Halleluja Jct., US 395, Sierra Nevada 1676 Comment
  OBI48150  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  OBI77050  Leucocrinum montanum Anthony Baniaga 2011-5-31 295 Lassen Lassen NF. Off hwy 44, along 32N60. Poison Lake quad T32N R7E sec 14 SW of NE 1705 Comment
  SEINET12044967  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek Comment
  SEINET8480557  Leucocrinum montanum M. J. Williams 1969-5-24 s.n. Lassen Hwy 44, near Bogart Ranger Station. 1646 Comment
  NY962818  Leucophysalis nana N. H. Holmgren 1980-7-4 9510 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  NY962821  Leucophysalis nana N. H. Holmgren 1978-6-12 8936 Lassen 0.8 km (0.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale 1920 Comment
  JEPS43360  Lewisia nevadensis C. S. Robinson 1927-6-25 19 Lassen near Westwood Junction (Norval Flat); Lassen forest 1747 Comment
  CAS-BOT-BC283770  Leymus cinereus John Thomas Howell 1973-7-10 49770 Lassen Near Westwood 1554 Comment
  JEPS103214  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mile N of Sagehen Summit on W side of Hwy 395 1706 Comment
  JEPS128173  Leymus cinereus M. C. Mahoney, J. A. Nash 2017-8-22 CA 350 -88 Lassen South of Pilgrim Lake of Buckhorn Byway. From Susanville take Highway 395 north to Buckhorn Byway and follow the road east past Buckhorn Reservoir and Dry Lake. Then take a right onto an unnamed road that is right on the CA/NV border. Continue for 1/2 mile. Population is on either side of the road. Comment
  UCD64227  Leymus cinereus Beecher Crampton 1960-6-18 5718 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  RSA126619  Leymus condensatus A. Simontacchi 1940-6-30 946 Lassen Halls Flat: 8.6 miles W. of Burgees Spring 1700 Comment
  CAS-BOT-BC274466  Leymus triticoides John Thomas Howell 1974-7-8 50467 Lassen Susanville 1295 Comment
  CDA34729  Leymus triticoides L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 air miles southeast of Adin. Comment
  RSA299171  Leymus triticoides J. T. Howell 1974-7-9 50467 Lassen Susanville 1296 Comment
  UC1037100  Leymus triticoides Leo Whitney 1933-8-4 2128 Lassen ca 10 mi nw north end of Eagle Lake; Lassen National Forest, Sheepshead 1889 Comment
  JEPS96064  Ligusticum grayi Vernon H. Oswald and Lowell Ahart 1996-8-1 8127 .1 Lassen s.-s.w. Westwood (ca. 2 mi. n. of Dyer Mt. Lookout, Forest Rd. 28N56 (D-line), on downhill side of rd.) 1737 Comment
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CAS-BOT-BC130709  Lilium pardalinum Louella Bass 1973-6-15 114 Lassen Elysian Valley 1325 Comment
  JEPS3468  Limosella aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3354 Lassen Honey Lake Valley; Adobe meadows Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain 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
  SEINET10902894  Linanthus harknessii Mary Susan Taylor 1974-1 Taylor 290 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC64802  Linanthus pungens Vernon H. Oswald 1995-5-24 6758 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. On a outcrop at the base of the Amedee Mtns. 1280 Comment
  UC106752  Linanthus septentrionalis T. S. Brandegee 1892-6-30 Lassen Jonesville Comment
  CDA6345  Linaria genistifolia subsp. dalmatica T. C. Fuller 1968-6-12 17236 Lassen Corut Street & Miller Road, southwest Susanville. 0 Comment
  UC506914  Linum lewisii George A. Fischer, Irwin H. Johnson 1933-7-14 F 264 Lassen Lassen National Forest, Mt. Diablo Meridian Lassen National Forest; , Mt. Diablo Meridian 1767 Comment
  CHSC36448  Linum lewisii var. lewisii Susan H. Euing 1982-6-3 2 Lassen Ca. 0.8 mi s jct forest service roads 5.16 and 5.17 heading towards 5-Corners. Comment
  CHSC68872  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1997-6-24 8641 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  UC773886  Lithophragma glabrum L. R. Short 1936-4-28 S- 336 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  SEINET6032241  Lithophragma glabrum J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin Comment
  RSA38473  Lithophragma parviflorum P. A. Munz 1947-5-18 11862 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  CAS-BOT-BC428416  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen Between Susanville and Janesville Comment
  CHSC21169  Lithophragma tenellum M. S. Taylor 1974-5-4 228 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  UC506915  Lithospermum ruderale George A. Fischer and Irwin H. Johnson 1933-7-19 F 262 Lassen Lassen; Sec. 2 1783 Comment
  HSC69589  Lithospermum ruderale Gary Schoolcraft 1979-6-19 67 Lassen W of Post Camp on N side of main road 1829 Comment
  CAS-BOT-BC269059  Lolium perenne John Thomas Howell; Gordon H. True 1973-8-1 50187 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC12951  Lomatium K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5842 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  CHSC117201  Lomatium bicolor var. leptocarpum Lowell Ahart; John Dittes 2016-6-7 20975 Lassen 20 yards west of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 6.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  UC21192  Lomatium bicolor var. leptocarpum M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  HSC21524  Lomatium caruifolium var. denticulatum B. R. Templeton 1962-4-24 Lassen 2 mi W of Millville Comment
  RSA0049635  Lomatium foeniculaceum subsp. macdougalii Dean Wm. Taylor 2012-6-6 21225 Lassen Vicinity Hunsinger Flat (ca. 10 miles ESE of Adin), 88 feet due E of junction of Forest Road 38N33 with Forest Road 38N04 1600 Comment
  UC1479579  Lomatium macrocarpum G. Schoolcraft 1980-4-8 204 Lassen just n. Viewland (w. side of Hwy. 395) 1371 Comment
  UCD127267  Lomatium macrocarpum Beecher Crampton 1960-6-18 5722 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  RSA715615  Lomatium nevadense L. Ahart 2005-6-1 11847 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction 1449 Comment
  UC1951074  Lomatium nevadense Debra Valov 2009-4-25 2009017 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  OBI48160  Lomatium nevadense Rhonda Riggins 1989-4-27 1651 Lassen U.S. 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line. 1676 Comment
  CHSC99119  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2008-6-19 14899 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
  UC1137734  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  OBI48161  Lomatium ravenii Rhonda Riggins 1989-4-27 1641 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale. 1311 Comment
  UC1479584 Image available Lomatium ravenii Gary Schoolcraft 1980-5-6 218 A Lassen Honey Lake Island 1219 Comment
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Oct 26 2017
  UCR267419  Lomatium ravenii Jim Andre, Glenn L. Clifton 1993-6-14 30002 Lassen northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville 1646 Comment
  OBI81753  Lomatium triternatum Tracey Call, Viola Call 1961-5-30 2051 Lassen 2 miles north of Madeline Comment
  CHSC42629  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2059 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  SEINET222482  Lomatium triternatum var. macrocarpum Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8930 Lassen Upper Smoke Creek south side of Observation Peak 7.6 km northeast of Tye Patch Canyon summit 18.5 km airline distance 1700 Comment
  CHSC25907  Lotus K. R. Stern 1967-7-1 2464 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  UC1594612  Lotus nevadensis var. nevadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5106 Lassen 1.2 mi se County Rd. A21 (Long Lake on s side of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  CHSC110911  Ludwigia palustris Lowell Ahart; John Dittes 2012-7-9 18291 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  JEPS48705  Lupinus Hilda W. Grinnell 1934-6-2 Lassen two mi e Westwood; e of Westwood Comment
  RSA719890  Lupinus albifrons var. albifrons Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12914 Lassen Along Rt. 395, ca. 6 miles southeast of Johnstonville. Comment
  CHSC37703  Lupinus arbustus M. S. Taylor 1982-8-27 5051 Lassen Crystal Peak, Diamond Mt, 6 air mi sw of Doyle. 2377 Comment
  SEINET5327708  Lupinus arbustus J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA Comment
  CAS-BOT-BC208730  Lupinus argenteus var. heteranthus L. S. Smith 1918-8-13 1035 Lassen Silver Cr., Modoc Forest 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
  CAS-BOT-BC208759  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-5-23 47349 Lassen Susanville, 1.4 miles west, Highway 36 Comment
  CHSC93684  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2005-6-1 11873 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.8 miles (air) northwest of Hallelujah Junction. 1448 Comment
  NY736928  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6019 Lassen 3 miles west of Doyle Comment
  SEINET5327973  Lupinus argenteus var. heteranthus M. J. Williams 1974-7-29 74 -L-58 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 50 1494 Comment
  UC1924256  Lupinus argenteus var. heteranthus Debra Valov 2004-5-31 2004231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC585203  Lupinus argenteus var. heteranthus E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1757 Lassen e Red Rock; e of Red Rock 1615 Comment
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Nov 4 2011
  UCD106809  Lupinus argenteus var. heteranthus R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  CHSC93547  Lupinus argenteus var. meionanthus Lowell Ahart; John Dittes 2005-6-2 11937 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  CAS-BOT-BC196637  Lupinus breweri var. breweri A. M. Vollmer; L. Beane 1953-7-1 57 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS126477  Lupinus holosericeus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-28 CA 350 -068 Lassen Take 395 to Ravendale. Follow county road 527 to Buckhorn Byway. Follow for approximately 15 miles then turn right at the south end of Pilgrim Lake. Drive past two gates and through Painter's Creek. About 500 meters out of the creek on Painter's Flat. Comment
  SEINET249342  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395 ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC1982376  Lupinus lepidus var. confertus Richard R. Halse 2004-6-22 6670 Lassen Along U. S. Hwy. 395 ca. 7.8 miles southeast of Susanville. Comment
  CHSC99124  Lupinus lepidus var. sellulus Lowell Ahart; John Dittes 2008-6-19 14886 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
  UC1537122  Lupinus lepidus var. sellulus Gordon H. True Jr. 1936-6-25 535 Lassen slopes e Harvey Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  NY747330  Lupinus lepidus var. utahensis A. Tiehm 1984-6-25 8823 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81 1829 Comment
  CHSC60830  Lupinus leucophyllus Vernon H. Oswald; Lowell Ahart 1993-6-28 5607 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC1609421  Lupinus leucophyllus Vernon H. Oswald and Lowell Ahart 1993-6-28 5607 Lassen Rd 35N04 n Hwy 44 (nw edge of valley, ne of Poison Lake); Harvey Valley, Aspen Well 1725 Comment
  JEPS103203  Lupinus leucophyllus G. Schoolcraft 1994-6-9 2347 Lassen 1 1/2 mile NE of Hwy 139 on Grasshopper-Termo Road 1615 Comment
  SEINET10452640  Lupinus meionanthus Taylor 1982-8-27 Taylor 5050 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
  UC70372  Lupinus microcarpus var. microcarpus Milo S. Baker 1893-1 Lassen Cra<ig?>s Comment
  JEPS94110  Lupinus nevadensis Vernon H. Oswald and Lowell Ahart 1998-5-22 9113 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1402 Comment
  NY747489  Lupinus nevadensis G. Schoolcraft 1986-4-28 1526 Lassen Lower W. slopes of Fort Sage Mountains 1433 Comment
  CHSC7671  Lupinus polycarpus Beverley J. Wise 1969-5-4 62 Lassen 0.5 mi west on Shaeffer Mtn lookout access road from junction with Hwy 395. 24.4 mi E. of Susanv. 1615 Comment
  SEINET10871085  Lupinus polycarpus Marcus E. Jones 1897-6-26 Jones s.n. Lassen Susanville, perkin's ranch. 1463 Comment
  SEINET10490893  Lupinus sellulus var. sellulus Billy Joe Cox 1971-6-11 Cox 3179 Lassen 8 mi. W of susanville, on calif hwy 36 along road cut in volcanic soil; pinus Jeffreyi forest. 1554 Comment
  RSA69483  Luzula comosa F. W. Peirson 1926-6-22 6826 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  CHSC113060  Lythrum hyssopifolia Lowell Ahart; John Dittes 2013-7-23 18896 Lassen Along the south margin of the levee road, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS88431  Lythrum portula Vernon H. Oswald and Lowell Ahart 1996-8-1 8104 Lassen sw of Westwood (ne of Indian Ole Dam, Mountain Meadows Reservoir); Mountain Meadows Reservoir Comment
  SFV7754  Madia citrigracilis T. Gordon, K. Kimbrough 1975-8-15 1214 Lassen 16 miles south of Adin. 1402 Comment
  CHSC4904  Madia elegans Bill Wilson 1967-7-15 163 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  UC1136966  Madia elegans L. R. Short 1936-6-26 S- 457 Lassen Burgess Spr. Exp. Range Lassen Forest 1837 Comment
  CAS-BOT-BC343698  Madia elegans Margaret Williams; Louella Bass 1972-10-22 EV 7 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  UCD134243  Madia elegans J. E. Stuart 1929-8-1 2035 Lassen Roy Hardwood Ranch, Milford. Comment
  CAS-BOT-BC344299  Madia exigua H. D. Ripley; R. C. Barneby 1943-6-13 5716 Lassen South of Johnstonville 1328 Comment
  UC2047849  Madia exigua Debra Valov 2016-6-20 1297 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; on NW-facing, dry, rocky outcrop. Comment
  UCD134274  Madia glomerata J. M. Tucker 1950-7-25 1975 Lassen road from Pittville, 33 miles northwest of Susanville. Comment
  CAS-BOT-BC343054  Madia gracilis David D. Keck 1930-7-23 949 Lassen Susanville 1280 Comment
  CHSC12436  Malacothrix Robert W. Severin 1969-6-25 19 Lassen Murrer's Upper Meadow, 2 mi es e of E.L.B.S. Near west side of meadow. 1584 Comment
  JEPS103229  Malacothrix floccifera G. Schoolcraft 1997-6-24 2595 Lassen About 4 miles W of Doyle on S side of Doyle Grade Road 1767 Comment
  UC92217  Malacothrix floccifera unknown 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC347437  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Sierra Nevada Mountains. Gold Run Creek south of Susanville Comment
  CAS-BOT-BC179097  Malva neglecta Mrs. H. C. Cantelow 1940-5-31 4011 Lassen E. of Bieber Comment
  UCR67380  Malvella leprosa George K. Helmkamp 1990-9-23 A- 8 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  SEINET8894054  Malvella leprosa D. S. Mapes 1942-7-13 s.n. Lassen Mapes Ranch, Litchfield. 1067 Comment
  CHSC106353  Marrubium vulgare Lowell Ahart; John Dittes 2010-8-30 17087 Lassen On the north side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Lane and Walters Road, 550 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. 1274 Comment
  UC1594528  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1992-7-16 5126 Lassen between Old Station and Susanville (Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1 mi e of Willow Spring Rd. (Forest Rd. 31N56)) 1745 Comment
  UC62420  Marsilea oligospora Baker and Nutting 1894-7-25 Lassen near Eagle Lake Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  POM260428  Marsilea vestita C. L. Hitchcock 1940-5-26 6649 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET10475266  Matricaria occidentalis Mary Susan Taylor 1982-6-12 Taylor 4651 Lassen 4010 ft. T28N R14E se sec 3. Standish quad. Alkali flats in Hartson Lake Refuge, 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville. 1222 Comment
  CHSC66389  Medicago lupulina Vernon H. Oswald; Lowell Ahart 1996-6-17 7812 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 6.0 mile post E of Devils Corral Trailhead. 1420 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
  CHSC7670  Medicago sativa Beverley J. Wise 1969-6-4 63 Lassen North edge of Milford on Hwy 395. 1249 Comment
  UC38833  Melica fugax M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UCD87270  Melica fugax Beecher Crampton 1960-6-18 5707 Lassen Lassen County (N.E.): southern Warner Mountain, Long Valley, 6 miles southeast of Jess Valleys. 2133 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
  CAS-BOT-BC262447  Melica subulata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49438 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS123854  Mentha arvensis Lowell Ahart, John Dittes 2015-7-14 20337 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  SJSU11391  Mentha arvensis J. W. Tilden 1960-6-27 1521 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  JEPS63459  Mentha canadensis W. L. Jepson 1918-8-2 7784 Lassen on lower bench Long Valley Creek (1 mi below Boni Ranch house, Long Valley); Long Valley, on lower bench of Long Valley Creek 1371 Comment
  CHSC106683  Mentzelia albicaulis B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC71128  Mentzelia albicaulis Vernon H. Oswald 1998-5-22 9137 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  JEPS107449  Mentzelia albicaulis Lowell Ahart, John Dittes 2005-6-1 11888 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  NY22895  Mentzelia albicaulis LeDoux 1973-5-25 869 Lassen Collected 3 miles north of Milford, on Highway 395 at Honey Lake campgrounds Comment
  UCD117207  Mentzelia albicaulis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  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
  HSC31748  Mentzelia congesta Donald Spalinger 1974-5-16 61 Lassen 300 yds. S of intersection of Rd. A3 and H 395 1250 Comment
  RSA715551  Mentzelia congesta L. Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  CHSC5300  Mentzelia dispersa P. Balch 1955-7-22 Lassen Paul Bunyan Rd., 3 1/2 mi from Susanville toward Eagle Lake. 1889 Comment
  UC506973  Mentzelia dispersa George A. Fischer, Irwin H. Johnson 1933-7-12 F 229 Lassen Lassen Forrest, Patterson Flat 1737 Comment
  RSA0034475  Mentzelia laevicaulis Geo. R. Julian 1962-8-3 s.n. Lassen California Highway #139 north of Susanville. Comment
  POM83245  Mentzelia montana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  JEPS88323  Menyanthes trifoliata Vernon H. Oswald and Lowell Ahart 1996-6-24 7890 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, Papoose Meadows); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC7719  Mertensia ciliata var. stomatechoides Clarence Ash 1969-5-21 2 Lassen Diamond Mountain, distance from Susanville undetermined. 1828 Comment
  NY1084278  Mertensia oblongifolia M. J. Williams 1986-5-14 86- 39 --1 Lassen 1.5 rd mi W of turn to Dodge Reservoir, on rd from Tuledad Canyon to Ravendale. 1706.9 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
  OBI76978  Microseris nutans Anthony Baniaga 2011-8-4 486 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill along 30N21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  CAS-BOT-BC349297  Microseris nutans Clarence R. Quick 1961-6-21 61 -34 Lassen 0.8 mile north off Road 1, Blacks Mountain Experimental Forest, northeast of Lassen Peak 1798 Comment
  SEINET4673741  Microsteris gracilis Leigh A. Johnson 1993-4-23 93 -004 Lassen Jct. HWY 395 and road to Ramhorn Campground and Painter Flat ca. 60 miles south of Alturis. 1650 Comment
  RSA74070  Microsteris gracilis subsp. humilis Milo S. Baker 1952-5-23 12414 Lassen Highway 36, east of Chester Comment
  RSA104221  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 9801 Lassen 4 miles S of Ravendale. 1280 Comment
  NY963916  Microsteris gracilis var. gracilis W. W. Eggleston 1911-5-29 6762 Lassen Vicinity of Doyle Station 1290 Comment
  UC1609131  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-28 5609 Lassen ne Poison Lake (n of Hwy. 44 on Rd. 33N06, nne of Burgess Meadow, sse flank of mtn.); Harvey Mtn. 1798 Comment
  UC1063535  Mimulus breweri A. Simontacchi 1940-5-28 786 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET230131 Image available Mimulus densus Noel H. Holmgren, Patricia K. Holmgren 1980-1 9512 Lassen Observation peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 2190 Comment
  CHSC5905  Mimulus floribundus M. West 1946-7-1 Lassen Pine Creek, Eagle Lake. 1584 Comment
  POM252822  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi. south of Westwood. 1524 Comment
  CDA41793  Mimulus guttatus Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 533 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC95322  Mimulus guttatus Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 533 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1012180  Mimulus guttatus Francis W. Pennell 1940-6-10 25778 Lassen 3 mi e Westwood (Route 36) 1584 Comment
  JEPS2648 Image available Mimulus jepsonii W. L. Jepson 1910-6-10 4112 Lassen Twin Lakes (Grassy Lake); ; Twin Lakes (Grassy Lake), Lassen Co. 2225 Comment
  JEPS94552  Mimulus lewisii Vernon Oswald and Lowell Ahart 1997-6-24 8616 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
  JEPS11447  Mimulus microphyllus Brown and Wieslander 1922-7-30 39 Lassen Martin Springs Eagle Lake Comment
  UC726697  Mimulus microphyllus A. A. Heller 1938-6-22 15183 Lassen 1 mi e Westwood 1524 Comment
  UC1523772  Mimulus moniliformis Gary Schoolcraft 1981-6-25 475 Lassen Comment
  CHSC59100  Mimulus moschatus Vernon H. Oswald; Lowell Ahart 1992-8-25 5182 Lassen Lassen Volcanic National Park. Grassy creek near the S end of Snag Lake. 1853 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
  RSA535802  Mimulus nanus var. mephiticus David M. Thompson 1988-6-1 923 Lassen 2.7 mi NW of Milford along Hwy 395. 1250 Comment
  JEPS15594  Mimulus nanus var. nanus Milo S. Baker 1893-7-5 Lassen Dixey Valley Comment
  JEPS11060  Mimulus primuloides Brown and Wieslander 1922-7-30 27 Lassen Martin Springs Eagle Lake Comment
  JEPS4302  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mi s Westwood 1524 Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  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
  UC1037311  Mimulus torreyi Leo Whitney 1934-7-27 1808 Lassen 5 mi w lower end of Eagle Lake (near Antelope Mt.); Lassen National Forest 1737 Comment
  UC1561993  Mimulus torreyi Barbara Ertter 1987-7-25 7317 Lassen Hwy 44 ca 1 mi e Shasta Co. line 1645 Comment
  NY813498  Mirabilis laevis var. retrorsa M. Bourell 1997-5-31 5881 Lassen Wendel Road 10.9 miles southeast of Highway 395. Comment
  SEINET10498937  Monardella odoratissima Mary Susan Taylor 1974-1 Taylor 275 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  LA54200  Monardella odoratissima subsp. glauca John Thomas Howell; 1934-6-10 11888 Lassen 12 mi. N of Susanville on rd to Horse Lake Comment
  RSA0037134  Monardella odoratissima subsp. glauca L. P. Janeway, B. Castro 2012-7-2 10933 Lassen Modoc Plateau. Along Skedaddle Ranch Road 6.4 road km north of Skedaddle Creek at an unnamed tributary of Bull Creek. 1533 Comment
  RSA122018  Monardella odoratissima subsp. glauca L. R. Short, Wm Gansberg 1936-7-3 S- 467 Lassen MDM, Burgess Spr. Exp. Range. 1849 Comment
  UC1137693  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen National Forest 1722 Comment
  UCR268963  Monardella odoratissima subsp. glauca Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31425 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  CAS-BOT-BC222147  Monardella odoratissima subsp. pallida W. Lessig 1967-7-20 28 Lassen 2 mi s of Five Corners on w side of rd to Dean's Meadow 1828 Comment
  CHSC63392  Monolepis nuttalliana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6315 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  UC1567380  Monolepis nuttalliana G. Schoolcraft 1989-5-16 1879 Lassen w. of Hwy. 395 Secret Valley 1347 Comment
  UC1602197  Monolepis nuttalliana M. S. Baker and Frank Nutting 1894-7-2 Lassen s. side Dixey Mts. Dixey Mts. Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC4797  Montia chamissoi R. Carter 1967-7-7 583 Lassen Collected at W end of reservoir in open wet meadow. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  JEPS87431  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02) 7 air mi w Eagle Lake (5.3 mi e of Lassen 105 (32N28Y), near Summit Camp) 1889 Comment
  UC1136742  Montia chamissoi Robert W. Gardner 1937-6-14 G 3 Lassen Burgess Spring Experimental Range 1767 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
  CHSC54192  Montia linearis Vernon H. Oswald 1991-5-28 4619 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. Locally abundant on the bed of a drying vernal pool on an undulating sagebrush flat east of the barn. 1264 Comment
  CHSC68758  Montia linearis Vernon H. Oswald; Lowell Ahart 1997-5-27 8497 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. Common in moist gravel on the flood plain of a small creek paralleling the road. 1546 Comment
  RSA122965  Montia linearis L. R. Short, Wm Gansberg 1936-6-8 s 392 Lassen Burgess Spring Exp. Range 1744 Comment
  CAS-BOT-BC262636  Muhlenbergia asperifolia C. S. Robinson 1928-9-18 120 Lassen Lassen National Forest. Hanna Estate, Morgan Springs. Around Sulphur Springs 1508 Comment
  JEPS70578  Muhlenbergia asperifolia W. L. Jepson 1918-8-2 7780 Lassen seepage swale below spring Beckwith Pass 1463 Comment
  UC1101599  Muhlenbergia asperifolia Malcolm A. Nobs and S. Galen Smith 1949-8-20 1480 Lassen marshy banks of creek 1 mi n Doyle; Honey Lake Valley, Long Creek Comment
  UC36660  Muhlenbergia asperifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3367 Lassen Adobe Meadows Honey Lake Valley Comment
  UC589858  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen near Red Rock; Sierraville Quadrangle 1341 Comment
  CAS-BOT-BC260598  Muhlenbergia filiformis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49495 Lassen Elysian Valley, W of Janesville 1325 Comment
  UC1024665  Muhlenbergia filiformis Leo Whitney 1934-8-15 2184 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UC1101591  Muhlenbergia richardsonis Malcolm A. Nobs and S. Galen Smith 1949-7-21 1060 Lassen 4 mi n Madeline (shallow marshy stream from springs) Comment
  UCD86987  Muhlenbergia richardsonis L. Whitney 1933-8-3 3042 Lassen Slate Creek. 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  CAS-BOT-BC275156  Muhlenbergia richardsonis George W. Gillett 1957-7-22 871 Lassen Lassen Volcanic National Park. Snag Lake, S shore 1850 Comment
  JEPS107463  Muilla transmontana Lowell Ahart, John Dittes 2005-6-1 11855 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UCD55275  Muilla transmontana Ellen Dean 2006-5-15 3090 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. 1246 Comment
  CAS-BOT-BC515651  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen NW corner of Secret Valley near Karlo Comment
  CHSC91312  Myosotis discolor Lowell Ahart; John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC1609242  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-7-8 5651 Lassen 1.9 mi n ow Hwy 44, on se edge of Poison Lake (Pittville Road) 1709 Comment
  NY492651  Myosurus apetalus var. montanus N. H. Holmgren 1978-6-11 8913 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  JEPS118467  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley 1268 Comment
  RSA125293  Myosurus minimus Peter H. Raven 1958-6-17 13285 Lassen Along United States Hwy 395, 1.9 miles S of Ravendale. Comment
  RSA233733  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39134 Lassen Said Valley Reservoir. Comment
  UC1101505  Myriophyllum sibiricum Malcolm A. Nobs and S. Galen Smith 1949-7-20 1049 Lassen Irrigation canal, ca. 4 mi W of Adin. Comment
  HSC13476  Myriophyllum verticillatum Fred J. Kindel 1955-7-8 Lassen Mt. Meadows Reservoir, Westwood Comment
  CHSC25310  Nama aretioides Pauleen Broyles 1977-6-1 157 Lassen Skedaddle Ranch Road at South Fork Reservoir turn-off, ca 8 km ne of Herlong. 1660 Comment
  HSC22985  Nama aretioides John Pratt 1970-7-5 67 Lassen 1250 Comment
  RSA17432  Nama aretioides Elmer I. Applegate 1934-5-4 8929 Lassen Secret Valley, 20 miles south of Ravendale. Comment
  RSA0043136  Nama aretioides var. californica Christopher Davidson 1975-6-7 2760 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCD55269  Nama aretioides var. multiflora Ellen Dean 2006-5-15 3070 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1247 Comment
  UCD87411  Nassella cernua T. S. Brandegee 1892-7-1 s.n. Lassen Susanville. Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  HSC75910  Navarretia breweri D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19274 Lassen Harvey Valley near Cone Springs Comment
  RSA123149  Navarretia breweri L. R. Short, J. Warren 1936-6-5 S- 374 Lassen Lassen [National] Forest: MDM, Burgess Spr. Exp. Range 1799 Comment
  UC1184057  Navarretia breweri Jean Langenheim 1957-6-22 4365 Lassen Said Valley Reservoir, ne part of Lassen County Said Valley Reservoir Comment
  UC1283709  Navarretia breweri Beecher Crampton 1964-6-27 7099 Lassen ca 8 mi se Ravendale (Spanish Springs - Shinn Mtns Recreation area) 1981 Comment
  UC1609452  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake rd (Lassen A1) ca 3 mi w Eagle Lake (0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  SEINET11268213  Navarretia breweri Vernon H. Oswald, Lowell Ahart 1993-6-28 5592 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.; 0 1719 Comment
  UCR119029  Navarretia intertexta Beecher Crampton 1954-7-6 2072 Lassen Modoc Plateau, 17 miles south of Ravendale along US highway 395. 1524 Comment
  JEPS121309  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2013-7-22 18869 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC58847  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5101 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. On bed of lake. White-flowered plants collected at McCoy Flat Reservoir. 1745 Comment
  CHSC6202  Navarretia leptalea J. B. Kimsey 1946-6-26 Lassen Pine Creek, Eagle Lake. 1615 Comment
  JEPS114396  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS120031  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2012-7-9 18288 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127174  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2016-7-15 21213 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1537488  Navarretia leucocephala subsp. minima Gordon H. True Jr. 1936-6-25 528 Lassen e of Harvey Ranger Station; Harvey Valley 1706 Comment
  SEINET2440299  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2005-7-28 05 -222 Lassen Lassen Natl. Forest, NE Long Lake vicinity. Off Hwy 44 at mile marker 20.74. At junction of spur road 31N01 leading from Hwy 44 and 31N51, which runs along NE edge of lake.; 0 1727 Comment
  UC1184061  Navarretia linearifolia subsp. linearifolia Jean Langenheim 1957-6-22 4368 Lassen Said Valley Said Valley (northeastern part Lassen County) Comment
  UC909114  Navarretia linearifolia subsp. linearifolia G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-7 4009 Lassen 5 mi se Black's Mtn Experimental Range; Grass Valley, Black's Mtn Experimental Range 1676 Comment
  CHSC89726  Navarretia sinistra subsp. sinistra L. P. Janeway 2004-6-26 8148 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
  JEPS120810  Nemophila pedunculata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18724 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  POM73805B  Nemophila pedunculata Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  UCSC000580  Nemophila pedunculata L. R. Short, W. Gansberg 1936-6-8 393 Lassen Burgess Spring Experiment Range 1743 Comment
  UC1567448  Neoholmgrenia andina G. Schoolcraft 1989-6-7 1907 Lassen ne lower slopes Shaffer Mtn. 1524 Comment
  CHSC67175  Nestotus stenophyllus James D. Jokerst 1991-5-29 3305 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
  CHSC65161  Nicotiana attenuata Vernon H. Oswald; Lowell Ahart 1995-7-5 6960 Lassen Modoc Plateau. North of Honey Lake at Bull Flat on Smoke Creek Ranch Rd., 10.3 mi e of Hwy 395. At roadside. 1432 Comment
  CHSC67071  Nicotiana attenuata Willis Ball 1969-6-28 54 Lassen Found on E.L.B.S. 1554 Comment
  UCD126693  Nicotiana attenuata Gerald Dickinson 1963-7-17 108 Lassen at entrance of Eagle Lake recreation site, Highway 139. 1559 Comment
  CDA23453  Nitrophila occidentalis Lee Wheeler 1961-8-11 Lassen On the John Capezzoli Ranch in Standish. 0 Comment
  UC1111001  Nuphar lutea subsp. polysepala Herbert L. Mason 1957-7-7 14727 Lassen Valley s of Eagle Lake Comment
  OBI48977  Oenothera deltoides Lewis S. Rose 1940-6-16 40598 Lassen Buntinville 1280 Comment
  UCD106858  Oenothera deltoides R. N. Raynor 1939-5-31 s.n. Lassen Milford, Honey Lake Valley. Comment
  UC107611  Oenothera deltoides subsp. piperi T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  SEINET10491875  Oenothera deltoides subsp. piperi Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2591 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and calif hwy 36 to susanville, near johnstonville. Assoc; purshia-artemesia. 1311 Comment
  SJSU10936  Oenothera deltoides subsp. piperi G. R. Ostrander 1965-7-12 70 Lassen by Hwy 395, 5 mi N of Doyle 1158 Comment
  CHSC4767  Oenothera elata subsp. hirsutissima R. Carter 1967-7-16 621 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side of rd. Comment
  UC1186545  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 mi n Bridge Camp; Hat Creek Comment
  RSA8247  Oenothera flava Elmer I. Applegate 1929-6-24 5881 Lassen Big Valley south of Bieber Comment
  HSC103620  Oreostemma alpigenum var. andersonii Thomas W. Nelson, Jane Nelson 1985-8-10 8015 Lassen Along north side of Silver Lake 1829 Comment
  UCD134723  Oreostemma alpigenum var. andersonii Ratliff 1966-7-15 9 Lassen Lassen Forest. Lower Pine Creek - PLDT 49. 1676 Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  UC1137581  Orthocarpus cuspidatus subsp. cryptanthus A. Simontacchi 1940-7-8 926 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1523713  Orthocarpus cuspidatus subsp. cryptanthus Gary Schoolcraft 1981-7-6 616 Lassen near top Goodrich Mtn.; near top of Goodrich Mtn. 1828 Comment
  RSA712893  Orthocarpus lacerus L. P. Janeway 2005-7-3 8454 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
  CAS-BOT-BC413246  Oxytheca dendroidea subsp. dendroidea Gordon H. True 1973-8-22 7655 Lassen North shore of Honey Lake ca. 5 miles east of Janesville and just west of Hartson Reservoir 1219 Comment
  UCR92119  Oxytheca dendroidea subsp. dendroidea G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  CHSC99145  Packera cana Lowell Ahart; John Dittes 2008-6-19 14877 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1924213  Packera eurycephala var. eurycephala Debra Valov 2004-6-9 2004270 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  HSC95271  Packera pseudaurea var. pseudaurea Gordon Leppig 1998-7-12 948 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC35992  Packera subnuda M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CAS-BOT-BC10387  Paeonia brownii J. T. Howell; Gordon H. True; Margaret Williams 1973-5-12 49158 Lassen In cemetary, Janesville 1295 Comment
  CHSC13509  Panicum J. Pitts 1972-6-23 271 Lassen 50 yds. n of Eagle Lake Biology Station. 1524 Comment
  NY1092251  Panicum capillare A. Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel. 1220 Comment
  CAS-BOT-BC259612  Pascopyrum smithii James Jokerst 1983-7-25 1898 Lassen Near Madeline Plains 1614 Comment
  CAS-BOT-BC259613  Pascopyrum smithii James Jokerst 1983-7-25 1886 Lassen Near Madeline Plains 1614 Comment
  CHSC71076  Pectocarya penicillata Vernon H. Oswald; Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  JEPS107455  Pectocarya penicillata Lowell Ahart, John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  HSC20946  Pedicularis semibarbata H. E. Parks, S. T. Parks Jun 1928 237 Lassen Drakesbad, Mt. Lassen, E side 1524 Comment
  UC2042972  Pedicularis semibarbata Barbara Ertter 1990-5-13 8965 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  SD6613  Pedicularis semibarbata Mrs. R. M. Austin 1880-1 Lassen Dutch Hill Comment
  CDA41877  Penstemon deustus T. C. Fuller 1963-7-15 10901 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  HSC68837  Penstemon deustus Gary Schoolcraft 1979-6-26 97 Lassen Small peak N of Radeo Flat 1951 Comment
  CHSC60779  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1993-6-14 5513 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. 1810 Comment
  CHSC62007  Penstemon gracilentus Eenam Sin 1992-6-3 26 Lassen North east corner at the base of Gallatin Peak. 1524 Comment
  JEPS11269  Penstemon gracilentus Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  NY600695  Penstemon gracilentus G. H. True Jr. 1938-7-14 959 Lassen Summit on Milford Grade, just on north slope 1676.4 Comment
  SEINET10917288  Penstemon gracilentus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1900 Comment
  UC1035884  Penstemon gracilentus Annie M. Alexander and Louise Kellogg 1946-8-13 5157 Lassen w side of Eagle Lake Comment
  UC1063186  Penstemon gracilentus A. Simontacchi 1940-6-20 851 Lassen 4.1 mi w Harvey Mountain Lookout; Lassen National Forest, Hall's Flat Quad. Comment
  HSC22978  Penstemon gracilentus John Pratt 1970-6-21 31 Lassen 1738 Comment
  UC1523811  Penstemon janishiae Gary Schoolcraft 1983-5-31 963 Lassen along Hwy 139 near Upper McBride Sp; near Upper McBride Sp. 1584 Comment
  UCD124278  Penstemon laetus Beecher Crampton 1964-6-26 7082 Lassen ca. 32 miles northwest of Susanville west end of Harvey Valley. Comment
  NY627262  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mile south of Westwood Comment
  POM252805  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mile S of Westwood. Comment
  UC1523710  Penstemon neotericus Gary Schoolcraft 1981-7-9 502 Lassen e slope of Roop Mtn. Comment
  HSC22984  Penstemon neotericus John Pratt 1970-7-11 69 Lassen Dyer Mtn. 1829 Comment
  HSC21043  Penstemon newberryi Fred J. Kindel 1955-7-19 Lassen Silver Lake Comment
  POM172676  Penstemon newberryi subsp. newberryi Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  SEINET3836566 Image available Penstemon newberryi subsp. newberryi Marcus E. Jones 1897-7-7 Lassen Lassen's Peak 1829 Comment
  CHSC4877  Penstemon roezlii R. Carter 1967-6-23 542 Lassen Growing ca. 5 yds off N side rd. Comment
  CHSC7753  Penstemon roezlii Beverly J. Wise 1969-5-15 109 Lassen 24.5 mi. East on Hwy 395 on the West side of Hwy. 1554 Comment
  JEPS29104  Penstemon roezlii Lauramay T. Dempster 1961-6-17 1680 Lassen just w Tule Mountain; just w of Tule Mountain 1645 Comment
  NY641735  Penstemon roezlii K. A. Vincent 1986-6-14 4321 Lassen Upper Long Valley; along east side of US 395, ca. 5.5 miles north of jct. US 70, ca. 13.2 road miles north of Bordertown and Nevada state line 1463.0 Comment
  NY650102  Penstemon roezlii J. T. Howell 1973-8-1 50205 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164.1 Comment
  POM44786  Penstemon roezlii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1520673  Penstemon roezlii Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9523 Lassen 24 km (15 mi) airline distance se Ravendale (21.9 km (13.6 mi) from U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1580 Comment
  SEINET226061  Penstemon roezlii M. Lavin 1982-5-30 4122 Lassen E of Hallelujah Junction 22 air mi NW of Reno W side of Petersen Mtns 1676 Comment
  UCD124154  Penstemon roezlii Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Balls Canyon, south of Secret Valley. Comment
  SEINET12326936  Penstemon rydbergii L. E. Ray 1967-1 100 Lassen 8 mi S ELBS, Deans Meadow 1951 Comment
  CAS-BOT-BC239494  Penstemon rydbergii var. oreocharis Lassen 1927 G. S. Crew 1927-7-1 49 Lassen Lassen National Forest, Bogard R.S. pasture 1712 Comment
  CAS-BOT-BC239504  Penstemon rydbergii var. oreocharis Louella Bass 1973-6-6 EV 100 Lassen Elysian Valley 1325 Comment
  CHSC13645  Penstemon rydbergii var. oreocharis M. S. Taylor 1974-6-25 287 Lassen Abundant in meadow ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC27679  Penstemon rydbergii var. oreocharis J. D. Prouty 1978-7-27 28 Lassen W of Eagle L. in small swale just n of Rd 105 on E margin of Champs Flat. 1694 Comment
  CHSC99300  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2008-6-20 14919 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SJSU7940  Penstemon rydbergii var. oreocharis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline Comment
  UC1137681  Penstemon rydbergii var. oreocharis George A. Fischer and Irwin H. Johnson 1933-7-12 F 228 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  NY660809  Penstemon speciosus N. H. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale. 1680 Comment
  POM194755  Penstemon speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats). 1494 Comment
  UC614464  Penstemon speciosus L. Constance 1938-6-11 2331 Lassen 3.5 mi n Secret Valley (Madeline Plains on Susanville-Alturas road); n of Secret Valley, Madeline Plains 1524 Comment
  NY660811  Penstemon speciosus D. W. McNeal 1983-6-5 2836 Lassen Road bank beside Highway #395, 9.2 miles north of the Plumas Co. line. Comment
  NY661063  Penstemon speciosus D. D. Keck 1935-6-25 3768 Lassen Ca. 2 miles west of Westwood on road to Chester at Co. line. Comment
  SEINET5329894 Image available Penstemon speciosus F. B. Headley 1915-5-28 3 Lassen Honey Lake Comment
  CAS-BOT-BC239665  Penstemon sudans John Thomas Howell; Gordon H. True 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC243409  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville 1280 Comment
  CHSC43495  Penstemon sudans Lowell Ahart; John Thomas Howell 1974-7-9 531 Lassen Along Eagle Lake Road, about 3 1/2 miles north-west of Susanville. 1584 Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  JEPS84973  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, Honey Lake 1828 Comment
  NY661803  Penstemon sudans N. H. Holmgren 1978-6-12 8937 Lassen Rye Patch Canyon, 4.3 km (2.7 miles) east of U.S. Highway 395, just above Ramhorn Campground, 14.5 km (9 miles) airline distance southeast of Ravendale. 1740 Comment
  NY661806  Penstemon sudans J. T. Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432.6 Comment
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Apr 21 2013
  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
  SEINET12335380  Penstemon venustus K. A. Vincent 1987-1 4500 Lassen Sierra Nevada, SE side of Fredonyer Butte, N side of CA 36 ca 11.5 mi WSW of Susanville 1585 Comment
  CDA26041  Peraphyllum ramosissimum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20382 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  RSA59742  Peraphyllum ramosissimum E. K. Balls 1950-5-19 14789 Lassen 1.6 miles S of Modoc county line, Hwy. 395, between Madeline and Likely. 1463 Comment
  CHSC29907  Perideridia bolanderi Robin Ondricek; Wesley Dempsey 1978-6-7 43 Lassen Ridge E of Lower Dry Lake, 12.5 mi N of Susanville. 1706 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
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  SEINET12120566  Perideridia gairdneri Unknown 1978-1 3 Lassen Papoose Creek, SE corner of Eagle L 1585 Comment
  CHSC13648  Persicaria amphibia M. S. Taylor 1974-7-10 312 Lassen Abundant in floating masses along w shore of Eagle Lake in vicinity of Grebe Nesting Area, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC13862  Persicaria amphibia F. T. Griggs 1973-4-25 100 Lassen Northwest shore of Black Mountain in Eagle Lake. Comment
  CHSC61234  Persicaria amphibia P. V. Caldwell 1972-7-16 297 Lassen At foot of Black Mtn. on e shore of Eagle Lake. Comment
  UCD149828  Persicaria amphibia Al Jennings 1963-7-10 s.n. Lassen Lassen County. Honey Lake Refuge. Comment
  CAS-BOT-BC419144  Persicaria maculosa Luella Bass 1980-8-29 s.n. Lassen Standish Comment
  JEPS17742  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5419 Lassen along Smoke Creek Ranch rd 6.8 mi e jnct. with U.S. 395 1402 Comment
  UC1537547  Phacelia adenophora Gordon H. True Jr. 1938-7-8 905 Lassen near Termo 1371 Comment
  UC726890  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen along Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  POM98589  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen Madeline Plain. Comment
  RSA0009544  Phacelia bicolor Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  JEPS94704  Phacelia bicolor var. bicolor Vernon H. Oswald and Lowell Ahart 1998-5-22 9132 Lassen 6 mi ne of Doyle (3.5 mi e of Fort Sage Road, near the summit of the dirt road in the Fort Sage Mountains); Fort Sage Mountains 1737 Comment
  UCD120478  Phacelia hastata John Thomas Howell 1934-7-8 12480 Lassen Champ's Flat. Comment
  RSA716141  Phacelia hastata subsp. compacta L. Ahart, John Dittes 2005-6-2 11950 Lassen Along a poor dirt road, about one mile northeast of the Anderson Ranch home, Long Valley, about five and a half miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction. 1499 Comment
  CHSC23597  Phacelia heterophylla subsp. virgata W. O. Baum 1971-7-1 71 -24 Lassen S. slope of Gallatin Peak. 2011 Comment
  CHSC66390  Phacelia heterophylla subsp. virgata Vernon H. Oswald; Lowell Ahart 1996-6-17 7776 Lassen Modoc Plateau. Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy.36 ca. 7 mi W of Susanville. Locally abundant along the trail and on brushy slopes at the bridge spanning the Susan River on the N side of Hwy. 36. 1432 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
  CHSC4910  Phacelia humilis A. E. Anderson 1967-6-23 5 Lassen Around Eagle Lake Biological Station. 1554 Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  UC773945  Phacelia humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  UCD120534  Phacelia humilis var. humilis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake, Warner Mountains, Modoc National Forest, northeastern part of county (ca. 18 miles airline southeast of Likely). 1905 Comment
  RSA83225  Phacelia inundata Verne Grant, Alva Grant 1947-9-5 8374 Lassen Northwest shore of Eagle Lake Comment
  CHSC106571  Phacelia linearis Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC12442  Phacelia linearis Robert W. Severin 1969-6-25 33 Lassen E.L.B.S. 25 feet s of library. 1569 Comment
  CHSC5051  Phacelia linearis L. B. Barlow 1967-6-23 3 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  JEPS94103  Phacelia linearis Vernon H. Oswald and Lowell Ahart 1998-5-22 9106 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  CDA40405  Phacelia linearis T. C. Fuller 1963-6-1 10637 Lassen Road to Willow Springs Campground, 2.0 miles east of Pittville-Susanville Road, 11.3 miles (road) south of Pittville. 0 Comment
  NY1056433  Phacelia lutea var. glandulifera A. Tiehm 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway 1387 Comment
  CAS-BOT-BC134047  Phacelia mutabilis John Thomas Howell 1977-6-22 52400 Lassen north end of Eagle Lake 1584 Comment
  UC506976  Phacelia mutabilis George A. Fischer, Irwin H. Johnson 1933-7-12 F 226 Lassen Lassen <National> Forest 1722 Comment
  CAS-BOT-BC159066  Phacelia ramosissima var. eremophila Clare B. Hardham 1971-8-22 18400 Lassen North slopes, Diamond Mountain 2133 Comment
  POM203780  Phacelia ramosissima var. eremophila J. T. Howell 1934-6-10 11873 Lassen Janesville Comment
  CHSC59552  Phacelia ramosissima var. ramosissima M> Meyer 1980-7-8 514 Lassen Amongst rocks (lg.) and junipers on top of Grasshopper Ridge. 1724 Comment
  CAS-BOT-BC159229  Phacelia ramosissima var. subglabra John Thomas Howell 1934-6-30 11873 Lassen Janesville 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
  RSA72886  Phacelia tetramera Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  NY1057984  Phacelia thermalis P. A. Munz 1947-5-19 11878 Lassen Highway 395 4 miles south of Madeline Comment
  POM266079  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Floodplain of Pitt River, one mile west of Bieber. Comment
  RSA128306  Phacelia thermalis Peter H. Raven, Otto T. Solbrig 1958-6-17 13297 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  RSA334843  Phacelia thermalis Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8595 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  JEPS91153  Phlox douglasii subsp. rigida Dean W. Taylor 1974-6-14 3715 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC1137650  Phlox douglasii subsp. rigida A. Simontacchi 1940-5-17 744 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1609184  Phlox gracilis Vernon H. Oswald and Lowell Ahart 1993-5-12 5376 Lassen 3.5 mi nw A21 (to Westwood) (canal crossing Hwy 44, on the n side of the road and on the e side of the canal) 1729 Comment
  RSA0029644  Phlox speciosa subsp. occidentalis Anthony Baniaga 2011-6-11 333 Lassen Lassen National Forest. At intersection of A1 and Sydnes Rd, north side of Eagle Lake. 1623 Comment
  CHSC35953  Phlox stansburyi M. S. Taylor 1982-5-29 4572 Lassen Ca. 500 yds ne of the jct of Hwys 70 and 395 at Hallululia Jct, ca 23 mi n of Reno. Comment
  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
  JEPS94127  Phlox stansburyi Vernon H. Oswald and Lowell Ahart 1998-5-22 9114 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts. 0.6 mi. e. of Fort Sate Rd.); Fort Sage Mts. 1402 Comment
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  RSA38466  Phlox stansburyi P. A. Munz 1947-5-19 11884 Lassen Madeline 1677 Comment
  RSA121476  Phoenicaulis cheiranthoides L. R. Short 1936-4-28 S 335 Lassen Burgess Spring Experimental Range. Lassen Forest. 1738 Comment
  SEINET247771  Phoenicaulis cheiranthoides Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9515 Lassen Observation Peak, near the top of the mountain, 17 km (10.5 mi) air distance east of Ravendale. 2420 Comment
  CHSC117545  Phoradendron bolleanum Lowell Ahart; John Dittes 2016-7-13 21136 Lassen 5 yards south of the gate to the pond, along 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
  UC465860  Phoradendron densum Franklin P. Nutting 1900-7-6 Lassen s. side Dixey Mts. Comment
  UC1037196  Phyllodoce breweri Leo Whitney 1934-9-16 1518 Lassen Lassen National Park, nw edge of Bumpass Hell Bumpass Hell; Lassen National Park, Bumpass Hell 2560 Comment
  RSA772875  Pilularia americana R. F. Thorne, Larry E. DeBuhr 1975-8-22 47209 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  SEINET11610302  Pinus jeffreyi David Charlet 1996-7-8 2288 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  SEINET11610645  Pinus lambertiana David Charlet 1996-7-8 2291 Lassen Diamond Mts; Sierra Nevada Janesville Grade, Great Basin drainage (Honey Lake) 1859 Comment
  CHSC4461  Pinus ponderosa C. Glascock 1965-2-7 224 Lassen 1.2.mi. w of Susanville Forest Ranger Station, Hwy. 36, ca. 20 ft. from road's edge. Comment
  CHSC84893  Pinus ponderosa L. P. Janeway; B. Castro 2003-10-5 8005 Lassen High Cascade Range. Cone Lake and trailhead parking area (trail 1.3 km southwest into Caribou Wilderness Area). 2055 Comment
  JEPS28716  Plagiobothrys cognatus George W. Gillett 1957-7-29 954 Lassen Snag Lake Lassen Volcanic National Park (shoreline near e inlet) 1850 Comment
  UC1609179  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5626 Lassen e of Poison Lake (n of Hwy 44 along Rd 33N47 at ne end of Little Harvey Valley, on small branch of Pine Creek, between Champs Flat and Harvey Valley); Little Harvey Valley, Pine Creek 1737 Comment
  CDA42913  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC99538  Plagiobothrys cusickii Lowell Ahart; John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS119643  Plagiobothrys cusickii Lowell Ahart, John Dittes 2012-7-9 18284 -A Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0039528  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC224968  Plagiobothrys hispidulus J. Burtt Davy 1897-6-17 3360 Lassen Adobe Meadows, Honey Lake Valley Comment
  CHSC112431  Plagiobothrys hispidulus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18776 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
  CHSC60334  Plagiobothrys hispidulus Mary Ann Showers 1992-6-12 2530 a Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  CHSC60726  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1993-6-14 5510 Lassen Junction of Lassen A1 (Eagle Lake Rd.) with Lassen A21 (32N02), ca. 3 mi (air) W of Eagle Lake. Roadside depression. 1813 Comment
  UC773949  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1743 Comment
  CAS-BOT-BC224971  Plagiobothrys hispidulus Gary Schoolcraft 1983-8-24 1146 Lassen Big Dry Lake S of Walsh Mountain 1615 Comment
  CHSC106839  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy 44 ca 1 mi E of Shasta Co. line. Flat lodgepole forest S of hwy. 1645 Comment
  UC1609214  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  UC1618198  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy. 44 ca. 1 mi. e. Shasta Co. line (s. of hwy.) 1645 Comment
  UC25081  Plagiobothrys hispidus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS107963  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  UC1483869  Plagiobothrys leptocladus G. Schoolcraft 1980-5-7 223 Lassen n shore Honey Lake Island; n shore Honey Lake Island 1219 Comment
  UCD55307  Plagiobothrys leptocladus Ellen Dean; Gary Schoolcraft 2006-5-16 3136 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  RSA0105581  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA337274  Plagiobothrys scouleri Noel Holmgren, Patricia K. Holmgren 1980-7-3 9476 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  POM71640  Plagiobothrys scouleri var. hispidulus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  SEINET10972885  Plagiobothrys scouleri var. hispidulus Katherine L. Morris 1973-5-25 Morris 248 Lassen 27.7 mi NW of the junction of Hwy 36 & 44 on Hwy 44, at Robber's Spring, in an open meadow on one side of the hwy with yellow pine, white fir and open on the other side. Comment
  RSA164364  Plagiobothrys shastensis Clare B. Hardham 1961-6-17 7509 Lassen Baxter Creek S of Susanville. 1677 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
  HSC16618  Platanthera dilatata var. leucostachys Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  CHSC96724  Platanthera leucostachys Gordon Leppig 1998-7-12 941 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  UC1037205  Platanthera leucostachys Leo Whitney 1933-8-8 1562 Lassen ca 8 mi nw Eagle Lake (spring at bed of Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UC1037280  Platanthera leucostachys Leo Whitney 1934-7-25 1740 Lassen ca 7 to 8 mi sw Eagle Lake (Bridge Creek Camp, near Bridge Creek); Lassen National forest, Bridge Creek 1737 Comment
  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
  POM260454  Plectritis congesta subsp. brachystemon C. Leo Hitchcock 1940-5-26 6604 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 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
  CHSC64854  Plectritis macrocera Vernon H. Oswald 1995-6-26 6942 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  CHSC99738  Plectritis macrocera Lowell Ahart; John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC326715  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade south of and paralleling Highway 70 just southeast of Beckwourth Pass on Plumas-Lassen county line 1584 Comment
  CHSC7691  Poa Beverley J. Wise 1969-6-4 124 Lassen 10 mi. east of Susanville (Janesville), cut in hill next to cemetery. 1310 Comment
  RSA484154  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
  SEINET10565425  Poa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17785 Lassen 6 mi N of Hallelujah Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  UCD90605  Poa bulbosa Alan A. Beetle; G. L. Stebbins Jr. 1942-5-29 3364 Lassen at Nubieber, near dwellings. Comment
  SEINET10517071  Poa bulbosa Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2603 Lassen Hallelujah Jct. intersection of US Hwy 395 & Calif. Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  CHSC101048  Poa cusickii subsp. cusickii John Dittes 2008-5-22 1525 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace and toe-slope on northeast side of Willow Creek. 483 Comment
  JEPS70635  Poa cusickii subsp. cusickii G. S. Crew and C. S. Robinson 1927-7-15 61 Lassen sw Lassen Co. Clover Valley; Lassen Forest 1767 Comment
  UC1024814  Poa cusickii subsp. cusickii Leo Whitney 1935-6-19 3265 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1583964  Poa fendleriana subsp. longiligula G. Schoolcraft 1990-5-16 2054 Lassen ca 1 mi w Muck Valley 1280 Comment
  SEINET190961 Image available Poa pratensis A. A. Beetle 2797 Lassen 10 miles west of Chester Mountain meadow. 1524 Comment
  SEINET10867718  Poa pratensis Katherine L. Morris 1973-5-25 Morris 243 Lassen Collected 7.6 mi NW of Jct of Hwy 36 & 44 on Hwy 44, in an area of yellow pine and incense cedar; very moist area. Comment
  CHSC99523  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2008-6-22 15020 Lassen On the road sides of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC604682  Poa pratensis subsp. pratensis Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  UCD90322  Poa secunda A. A. Beetle; G. L. Stebbins Jr. 1942-5-30 3365 Lassen Nubieber. Comment
  CAS-BOT-BC236251  Poa secunda subsp. juncifolia John Thomas Howell 1934-6-14 12172 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  UC1024804  Poa secunda subsp. juncifolia Leo Whitney 1935-6-23 3289 Lassen Fruit Grower's Supply Company, Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024938  Poa secunda subsp. juncifolia Leo Whitney 1935-6-26 3336 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1776716  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2348 Lassen About 1.5 miles NE of Red Rock Lake 2042 Comment
  UC589943  Poa secunda subsp. juncifolia Leo Whitney 1936-5-26 3157 Lassen 10 mi e Adin (near Ash Creek) Comment
  UC718010  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada 1341 Comment
  UC718011  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5447 Lassen 2 mi w Westwood (meadow leading to Mountain Meadows Reservoir); Sierra Nevada 1524 Comment
  UCD92148  Poa secunda subsp. juncifolia Collector Unknown 1935-6-27 s.n. Lassen Squaw Valley. Comment
  CAS-BOT-BC236184  Poa secunda subsp. secunda John Thomas Howell 1976-7-20 52008 Lassen About 5 miles W of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UC1024836  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3220 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC127313  Poa secunda subsp. secunda Milo S. Baker Lassen Dixie Valley Comment
  SEINET7873582  Poa secunda subsp. secunda J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch. Comment
  SEINET10443291  Poa secunda var. secunda M. Church 2016-6-10 3 Lassen E of Hwy 395, N of Hallelujah Junction. 1442 Comment
  UC773972  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experiment Range; Lassen Forest 1767 Comment
  UCD91756  Poa wheeleri L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp 10. Comment
  CHSC67263  Polemonium micranthum James D. Jokerst 1991-5-29 3312 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of drainage. 1584 Comment
  JEPS112858  Polemonium micranthum Dean Wm. Taylor, Glenn L. Clifton 1992-5-7 12548 B Lassen Eagle Lake Region, Pine Creek, on Forest Road 33N07 ca. 0.8 mile S of Byrgess Flat, 1767 Comment
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  SEINET8729406 Image available Polemonium micranthum Unknown 1986-1 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill, T36N, R16E, S35, 5600 ft. 1707 Comment
  POM74373  Polemonium occidentale Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC74163  Polyctenium fremontii G. Schoolcraft 1998-5-19 2707 Lassen South end Mud Flat. 1341 Comment
  CAS-BOT-BC74171  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Highway 395. 1609 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
  CHSC68619  Polyctenium fremontii var. fremontii Vernon H. Oswald; Lowell Ahart 1997-5-7 8405 Lassen Mud Flat along Smoke Creek Ranch Rd. 1.7 mi east of Hwy. 395. 1356 Comment
  JEPS94355  Polyctenium fremontii var. fremontii Vernon H. Oswald and Lowell Ahart 1997-5-7 8405 Lassen 1.7 ni e of Highway 395 (Mud Flat along Smoke Creek Ranch Road); Mud Flat, Smoke Creek Ranch Road 1356 Comment
  CHSC64797  Polygala subspinosa Vernon H. Oswald 1995-5-31 6815 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  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
  CDA22783  Polygonum davisiae C. Siebe 1971-6-19 Lassen Near cattle corrals at southwest end of Westwood. 0 Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC773925  Polygonum douglasii subsp. douglasii L. R. Short and J. Warren July, 1936 S- 420 Lassen Burgess Spring Experiment Range 1856 Comment
  JEPS104432  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, ca 1/4 mile southwest of the Susan River, ca 8 miles (air) southwest of Susanville. 1433 Comment
  JEPS46148  Polygonum douglasii subsp. spergulariiforme Duncan Dunning 1921-8-11 Lassen 3 mi s Antelope Mountain (sw of Eagle Lake); Martin Spring Comment
  UC1137781  Polygonum douglasii subsp. spergulariiforme August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  UC1178952  Polygonum douglasii subsp. spergulariiforme Herbert L. Mason Jul 29 1955-Jul 31 1955 14645 Lassen near Westwood Junction ((railroad station 15 mi w of Susanville), s Lassen Co.) Comment
  RSA0011553  Polygonum esotericum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46999 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UC1924203  Polygonum lapathifolium Debra Valov 2005-8-20 2005221 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC110776  Polygonum polygaloides subsp. confertiflorum Dean Wm. Taylor 2012-7-18 21278 Lassen Cascade Ranges. Windmill Flat tributary Juniper Creek, Pit River Watershed, 11 miles S of Adin). 1706 Comment
  CHSC60844  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1719 Comment
  CHSC66256  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1996-6-24 7856 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally abundant near a ditch on the W side of the meadow ca. 0.3 mi S of the cabins. 1633 Comment
  JEPS97417  Polygonum ramosissimum Vernon H. Oswald and L. Ahart 1995-6-19 6880 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  UC773924  Polygonum sawatchense subsp. oblivium L. R. Short 1936-5-22 S- 352 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  UC1136188  Polygonum sawatchense subsp. sawatchense A. Simontacchi 1940-5-28 780 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC420157  Polygonum sawatchense subsp. sawatchense Clarence R. Quick 1961-6-21 61 -18 Lassen Adjacent to Road 21, Blacks Mountain Expermental [Experimental] Forest, northeast of Lassen Peak 1798 Comment
  CDA22787  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. Comment
  HSC97193  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy. 36, 1/4 mi. SW of the Susan River, 8 air mi. SW of Susanville 1434 Comment
  RSA82761  Polygonum spergulariiforme J. M. Tucker 1950-7-25 1976 Lassen 33 miles NW of Susanville, on road from Pitville Comment
  SBBG128041  Polygonum spergulariiforme L. Ahart, J. Dittes 2010-7-31 16979 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
  JEPS121244  Polypogon monspeliensis Lowell Ahart, John Dittes 2013-7-22 18874 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
  RSA719889  Polypogon monspeliensis Michael A. Vincent, K. Levings 2006-7-29 12915 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  CHSC29892  Porterella carnosula Robin L. Ondricek 1978-7-5 87 Lassen The ne edge of Mahogany Lake between the water and the trees. 2057 Comment
  CHSC60343  Porterella carnosula Mary Ann Showers 1992-6-13 2550 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 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
  SEINET3795836 Image available Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9461 Lassen Madeline plains, along US hwy 395, 5.6 km (3.5 mi) S of Madeline 1615 Comment
  SEINET10460844  Porterella carnosula Baker 1894-7-21 Baker s.n. Lassen Near Eagle Lake. 1524 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
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  UCR196279  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  CAS-BOT-BC453915  Potamogeton pectinatus W. I. Follett; S. B. Benson 1957-11-2 s.n. Lassen Tributary of Secret Creek, 1.1 mi. n. of Karlo Comment
  CAS-BOT-BC454090  Potamogeton pusillus subsp. tenuissimus Wm. Anderson 1960-6-16 s.n. Lassen Barrow pit along county road 1 mi. nw. of Tanner Ranch, Honey Lake Valley Comment
  UC1099901  Potamogeton pusillus var. pusillus Verne Grant, Irving Schneider 1947-7-31 8202 Lassen Madeline Plain, ne quarter of George Williams section 19 Madeline Plain Comment
  UC1100047  Potamogeton pusillus var. pusillus Malcolm A. Nobs, S. Galen Smith 1949-7-20 1045 Lassen Bieber, along Highway 299 Bieber Comment
  CHSC65370  Potamogeton zosteriformis Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7220 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  CHSC64894  Potentilla basaltica Vernon H. Oswald 1995-6-26 6933 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the w side of the road adjacent to a flat of low sagebrush. 1542 Comment
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 Comment
  POM366534  Potentilla glandulosa subsp. ashlandica Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CAS-BOT-BC141633  Potentilla gracilis var. elmeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49452 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  CHSC99535  Potentilla gracilis var. fastigiata Lowell Ahart; John Dittes 2008-6-20 14954 Lassen In meadow, about 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA504625  Potentilla gracilis var. fastigiata Bruce Bartholomew 1988-6-25 4373 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  UC1137589  Potentilla gracilis var. fastigiata A. Simontacchi 1940-7-8 939 Lassen 3.9 mi se Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  CAS-BOT-BC540359  Potentilla gracilis var. fastigiata Alice Eastwood 1912-8-22 1870 Lassen Lassen Butte Region: Morgans Springs Comment
  CAS-BOT-BC540366  Potentilla gracilis var. fastigiata B. Bartholomew; B. Anderson 1988-6-25 4373 Lassen Warner Mountains 2080 Comment
  CAS-BOT-BC158477  Potentilla gracilis var. gracilis Alice Eastwood; John Thomas Howell 1940-6-11 7997 Lassen Bieber Comment
  CHSC5003  Potentilla millefolia K. C. Newman 1967-7-14 87 Lassen Collected in meadow along SH 44 about 15 mi. from the junction of SH 36 going toward Redding. 1828 Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CHSC66731  Potentilla rivalis Vernon H. Oswald; Lowell Ahart 1996-8-1 8103 Lassen Mountain Meadows Reservoir SW of Westwood. In forest bordering the lake NE of Indian Ole Dam. 1539 Comment
  CHSC30570  Prunella vulgaris Sori H. Shad 1970-6-24 31 Lassen Collected in upper Murrer's Meadow. 1524 Comment
  CAS-BOT-BC159781  Prunus andersonii Margaret Williams 1974-8-4 74 -L-75 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SJSU14477  Prunus andersonii W. D. Pitts 1990-5-29 297 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  UC1128289  Prunus andersonii E. Sawyer 1935-6-27 227 Lassen Long Valley 1310 Comment
  UCD35732  Prunus emarginata Beecher Crampton 1960-6-18 5725 Lassen southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CHSC91204  Prunus virginiana var. demissa Lowell Ahart; John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  JEPS88231  Prunus virginiana var. demissa Vernon H. Oswald and Lowell Ahart 1996-6-17 7767 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Highway 36, on the n side of Hwy 36 0.2 mi e of the 7 Mile Post); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  UCD113534  Prunus virginiana var. demissa W. Robert Powell 1985-7-30 3080 c Lassen about 3 miles WNW of Susanville on narrow flood plane of Piute Creek. 1402 Comment
  CHSC13511  Pseudognaphalium thermale J. Pitts 1972-6-29 293 Lassen 3 mi se of Five Points on e side of road. Comment
  CAS-BOT-BC239798  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51999 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC239806  Pseudoroegneria spicata James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 mi. ssw. of Karlo 1417 Comment
  UCD91491  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3018 Lassen On east side of Horse Lake. Comment
  UCD91511  Pseudoroegneria spicata August L. Hormay 1929-6-1 s.n. Lassen Susanville Forest Office. Comment
  UC60834  Pseudoroegneria spicata subsp. spicata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Amedee; Honey Lake Valley, Amedee Comment
  UC718009  Pseudoroegneria spicata subsp. spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada 1341 Comment
  CHSC67079  Pseudostellaria jamesiana Jeanne Boze 1981-6-13 116 Lassen On northeast slope of Galletin Peak. 1981 Comment
  JEPS51149  Pseudostellaria jamesiana Brown and Wieslander 1922-7-28 51 Lassen Martin Sprs. Eagle Lake; , Martin Sprs Comment
  UC1924584  Psilocarphus brevissimus var. brevissimus Debra Valov 2006-5-28 2006014 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC72538  Pteridium aquilinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49175 Lassen Elysian Valley northwest of Janesville 1325 Comment
  RSA32005  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles E of Westwood 1524 Comment
  CDA26233  Purshia tridentata S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  SEINET3394464  Purshia tridentata E. D. McArthur 1982-1 EDM- 1356 Lassen NW of Janesville at Jct of crossroads 205 & 219 Comment
  CAS-BOT-BC147818  Purshia tridentata var. tridentata Clarence Quick 1963-7-12 63 -31 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CAS-BOT-BC147867  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen Near outlet of Widow Lake, ca. 50 yards from lake 2057 Comment
  CHSC105257  Purshia tridentata var. tridentata Lowell Ahart; John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  JEPS117495  Purshia tridentata var. tridentata Lowell Ahart, John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  POM90536  Purshia tridentata var. tridentata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC462880  Pyrola asarifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 Comment
  CHSC6237  Pyrola picta P. Balch 1955-7-22 Lassen Between Eagle Lake and Pittville road. 1676 Comment
  OBI75873  Pyrola picta Anthony Baniaga 2011-8-10 496 Lassen Lassen Natl Forest. About 1/4 mi SE of Swain Mdw, S of Robbers Ck. Swain Mtn quad T29N R8E sec 35 NE of SW 1721 Comment
  UC1332443  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  UC1609363  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald and Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd (Lassen 111, 36N01) 3.0 mi n Hwy 44 (ne of Poison Lake) 1709 Comment
  UC1037291  Pyrrocoma hirta var. lanulosa Leo Whitney 1934-7-10 1671 Lassen ca 14 mi w Eagle Lake (dry meadow near Harvey Valley Spring); Lassen National forest, Harvey Valley 1737 Comment
  UC1143034  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1783 Comment
  POM39970  Pyrrocoma lanceolata Marcus E. Jones 1897-6-30 s.n. Lassen Ranch below Eagle Lake. Susanville, 4 miles. 1524 Comment
  JEPS100333  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17838 Lassen meadow 0.5 air mi S of Doyle Grade, along private road in rural residential area Feather River Watershed 1859 Comment
  RSA715949  Pyrrocoma lucida L. P. Janeway 2005-7-31 8512 Lassen Northern High Sierra Nevada. Diamond Mountains; Head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  POM106363  Quercus kelloggii Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCD46733  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen Southwest of Susanville on Gold Run Road, Lassen County. 1341 Comment
  UCR67040  Quercus kelloggii George K. Helmkamp 1990-10-4 M- 8 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CAS-BOT-BC104477  Quercus vacciniifolia C. Hart Merriam 1925-8-22 s.n. Lassen Summit, between Butte Creek Meadows and Lake Almanor Comment
  UC1608998  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy 44 (between Poison Lake and Susanville) 1749 Comment
  JEPS88527  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1996-6-24 7877 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  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
  CHSC112752  Ranunculus aquatilis var. diffusus Lowell Ahart; John Dittes 2013-7-23 18891 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  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
  CDA24319  Ranunculus cymbalaria var. saximontanus T. C. Fuller 1980-8-6 20317 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
  CHSC59807  Ranunculus cymbalaria var. saximontanus Mary Meyer; Teresa Prendusi 1980-5-8 Lassen Near the creek in Balls Canyon. 1341 Comment
  UC1745660  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  RSA152629  Ranunculus cymbalaria var. saximontanus I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16345 Lassen N of road 13.5 miles E of Susanville Comment
  OBI75893  Ranunculus flammula Anthony Baniaga 2011-8-17 504 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1978 Comment
  CHSC84874  Ranunculus flammula var. ovalis Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 352 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  UC118184  Ranunculus occidentalis T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  CHSC91184  Ranunculus testiculatus Lowell Ahart; John Dittes 2005-6-1 11911 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
  CHSC8729  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01. Comment
  SEINET10871347  Ribes Mary Susan Taylor 1974-5-4 Taylor 223 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CHSC7763  Ribes aureum Beverley J. Wise 1969-5-4 98 Lassen North shore of Leavitt Lake, south side Hwy 395. 1266 Comment
  CHSC99274  Ribes aureum var. aureum Lowell Ahart; John Dittes 2008-6-20 14950 Lassen 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
  JEPS114691  Ribes aureum var. aureum Lowell Ahart, John Dittes 2008-6-20 14950 Lassen 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
  RSA0115086  Ribes aureum var. aureum Lowell A. Ahart, John Dittes 2008-6-20 14950 Lassen 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
  CAS-BOT-BC93392  Ribes cereum Milo S. Baker 1894-6-1 s.n. Lassen South side Dixey Mountains. Comment
  CDA25528  Ribes cereum J. R. Keck Jr. 1977-7-13 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  CHSC12476  Ribes cereum Carol Weld 1969-6-19 2 Lassen Juniper sagebrush ca 150 yds. N. of Eagle Lake Field Station. 1554 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
  UC1127635  Ribes cereum A. Simontacchi 1940-6-15 882 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS87426 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1993-6-3 54887 Lassen just s of ford over Pine Creek (Champs Flat Rd (Lassen 105, Forest 32N28Y), 7.0 mi n of tis junction w Lassen 21 (32N02) to Eagle Lake, between Poison Lake and Susanville); Champs Flat Rd, Lassen 105, Forest 32N28Y 1688 Comment
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  UC585163  Ribes velutinum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1738 Lassen gully on mountain above Red Rock 1420 Comment
  UC773883  Ribes velutinum L. R. Short and Wm. Gansberg 1936-7-9 S- 481 Lassen Burgess Spring Experiment Range Lassen Forest 1783 Comment
  SD131593  Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen south side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from susanville to Alturas west of the highway 1385 Comment
  OBI48617  Rigiopappus leptocladus Lewis S. Rose 1940-6-11 40507 Lassen 8 mi W of Nubieber 1219 Comment
  SEINET10799165  Rigiopappus leptocladus Arnold J. Tiehm, Margaret J. Williams; Jan Nachlinger 1988-6-2 Tiehm 11700 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on Highway 395 from Susanvile to Alturas, west of the highway. 1387 Comment
  UC1924227  Rorippa curvipes Debra Valov 2004-6-8 2004247 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC10717  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-7-1 Lassen Dixey Mts. Comment
  RSA0065538  Rorippa curvisiliqua Marion P. Harthill 1971-6-20 216 Lassen Susanville. 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
  CHSC117284  Rorippa palustris var. fernaldiana Lowell Ahart; John Dittes 2016-7-15 21218 Lassen Along a ditch west of the road, about 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  RSA702446  Rosa californica L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat. Black Mountains Experimental Forest. 1790 Comment
  CHSC60400  Rosa woodsii subsp. ultramontana Mary Ann Showers 1992-6-13 2533 Lassen Lassen Volcanic National Park. East shore of Butte Lake, ca. .3 miles south of Butte Creek outlet. West of trail, near shoreline. 1841 Comment
  CHSC66400  Rosa woodsii subsp. ultramontana Vernon H. Oswald; Lowell Ahart 1996-6-17 7773 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  CHSC99109  Rosa woodsii subsp. ultramontana Lowell Ahart; John Dittes 2008-6-20 14972 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
  HSC93474  Rosa woodsii subsp. ultramontana Gordon Leppig, Tony LaBanca 1998-7-13 874 Lassen Modoc National Forest, Blue Lake Ranch. 1799 Comment
  UC75495  Rosa woodsii subsp. ultramontana Milo S. Baker 1898-1 Lassen Vicker's Comment
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  UC1746173  Rumex Annetta M. Carter 1945-9-30 1720 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CAS-BOT-BC421955  Rumex acetosella Margaret Williams; Steven Williams 1974-7-26 74 -L-23 Lassen Near Hellelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CDA2904  Rumex crispus Gordon Leppig 1998-7-12 962 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  UC452560  Rumex crispus Franklin P. Nutting Lassen near Lookout; Big Valley Comment
  CAS-BOT-BC433244  Rumex crispus Margaret Williams 1974-7-27 74 -L-64 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC433632  Rumex lacustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13266 Lassen Along United States Highway 395, 11.8 miles north-east of Litchfield Comment
  UCD101331  Rumex lacustris Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  UCR270584  Rumex salicifolius John F. Emmel 1998-6-6 1555 Lassen Long Valley Creek at Hwy 70, c. 1.8 miles west of Hallelujah Junction 1463 Comment
  UC748281  Rumex salicifolius var. triangulivalvis Annie M. Alexander and Louise Kellogg 1946-8-11 5153 Lassen nw end Grasshopper Valley Comment
  CDA23213  Rumex salicifolius var. triangulivalvis T. C. Fuller 1959-7-7 Lassen Highway 395, 11 miles south of Ravendale. 0 Comment
  RSA0105590  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD101653  Rumex venosus Rimo Bacigalupi; L. R. Heckard 1962-5-28 8494 Lassen Along U.S. Highway 395, 10 miles south of Milford. 1219 Comment
  SEINET4176402  Rumex venosus N. J. Hartke 1953-5-18 29 Lassen 2 miles north of Halleluja, Calif. Comment
  SEINET4176560  Rumex venosus Cahlan 1932-5-31 1413 Lassen Between Doyle and Susanville Comment
  JEPS88426  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1996-8-1 8107 Lassen receding shore of the Mountain Meadows Reservoir ne Indian Ole Dam (sw of Westwood); Mountain Meadows Reservoir, ne of Indian Ole Dam 1539 Comment
  CAS-BOT-BC445672  Sagittaria cuneata Jean L. Pawek 1964-8-16 604 Lassen Lake Almanor near Chester 1371 Comment
  CAS-BOT-BC445673  Sagittaria cuneata George W. Gillett 1957-7-28 918 Lassen Lassen Volcanic National Park. Butte Lake 1844 Comment
  CHSC61243  Sagittaria latifolia P. V. Caldwell 1972-6-23 246 Lassen Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow. Comment
  CAS-BOT-BC102812  Salix boothii Mrs. H. P. Bracelin 1934-6-14 820 Lassen Upper Silver Creek, near Silver Lake (Lost Lake), Warner Mountains 2316 Comment
  CAS-BOT-BC102813  Salix boothii Mrs. H. P. Bracelin 1934-6-14 821 Lassen Upper Silver Creek, near Silver Lake (Lost Lake), Warner Mountains 2316 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
  CHSC66403  Salix exigua Vernon H. Oswald; Lowell Ahart 1996-6-17 7784 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. 1432 Comment
  SEINET3260826  Salix exigua Marcus E. Jones 1897-6-25 Lassen Susanville. 1340 Comment
  CAS-BOT-BC104044  Salix hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen McArthur, at edge of Pit River 950 Comment
  CAS-BOT-BC128172  Salix lasiandra var. lasiandra John Thomas Howell 1976-7-20 52018 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass - Sierra Nevada 1432 Comment
  CAS-BOT-BC128173  Salix lasiandra var. lasiandra Hans Leschke 1960-8-8 1736 Lassen Below trail ski hut, Crumbaugh Lake 1981 Comment
  POM209470  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 685 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  POM209555  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 684 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  POM209558  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 686 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  NY187800  Salix lucida subsp. caudata J. T. Howell 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville 1325.9 Comment
  CHSC13655  Salix scouleriana E. L. Smith 1971-7-26 987 Lassen At Eagle Lake Field Station ca. 20 mi nw of Susanville. 1615 Comment
  JEPS96090  Salix scouleriana Vernon H. Oswald and Lowell Ahart 1996-6-17 7770 Lassen on n side of Hwy 36 ca 0.2 mi e & mile post (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1432 Comment
  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
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  UCD125448  Salvia aethiopis J. M. Tucker 1950-7-26 1979 Lassen outskirts of Susanville, on east side of town. Comment
  CAS-BOT-BC214311  Salvia dorrii var. pilosa Elmer I. Applegate 1897-6-3 860 Lassen Madeline Plains Comment
  SEINET10880384  Sambucus caerulea Andrew Townesmith 2012-9-4 Townesmith 2398 Lassen Along California route 44, at milepost 34, ca. 2 miles west of intersection with California route 36. 1671 Comment
  CHSC23496  Sambucus mexicana Wayne O. Baum 1971-7-6 71 -74 Lassen Basalt outcrop. . 2042 Comment
  JEPS94542  Sambucus racemosa var. microbotrys Vernon Oswald and Lowell Ahart 1997-6-24 8609 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville on n side of Diamond Mountain along Forest Road 29N43, 5.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1889 Comment
  CAS-BOT-BC110335  Sarcobatus vermiculatus John Thomas Howell 1975-7-23 51414 Lassen Sierra Nevada. On Highway 395 about 5 miles southeast of Doyle. 1310 Comment
  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
  CHSC66854  Sarcobatus vermiculatus Vernon H. Oswald 1996-9-21 8288 Lassen Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. Growing on the edge of the levee road along the N side of Wlillow Creek ca. 0.5 mi E of the parking area on the highway. 1490 Comment
  JEPS28664  Saxifraga odontoloma George W. Gillett 1957-7-22 6070 Lassen near campsite at s end of Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  JEPS47551  Saxifraga oregana Milo S. Baker 1894-7-9 Lassen Pine Creek 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
  CAS-BOT-BC283087  Schedonorus arundinaceus Margaret Williams; Louella Bass 1972-10-22 EV 3 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  UCD65649  Schedonorus arundinaceus John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49474 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  RSA0009705  Schoenoplectus acutus var. occidentalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 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
  HSC95197  Scirpus microcarpus Gordon Leppig 1998-7-12 943 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA39106  Scirpus pungens T. C. Fuller 1964-10-8 12708 Lassen Wendel Hot Springs, ca. 1 mile west of Wendel. 0 Comment
  CHSC77219  Scutellaria holmgreniorum G. Schoolcraft 1998-7-14 2762 Lassen N. of Shaffer well on E. side of Tablelands. 1371 Comment
  CAS-BOT-BC214262  Scutellaria nana G. Schoolcraft 1986-6-18 1630 Lassen S. side of Smoke Creek between Shinn & Smoke Creek Ranches 1493 Comment
  CAS-BOT-BC214263  Scutellaria nana H. D. Ripley; R. C. Barneby 1943-6-15 5764 Lassen Smoke Creek, N-E of Viewland 1341 Comment
  CAS-BOT-BC214267  Scutellaria nana Peter H. Raven; Otto T. Solbrig 1958-6-17 13270 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  SEINET10499152  Scutellaria nana Mary Merello 1993-6-28 Merello 750 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  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
  SEINET13947829 Image available Scutellaria nana G. Schoolcraft 1986-1 1628 Lassen Ca 3 mi E of Hwy 395 on Hall Springs Road; 4700 ft alt., T32N, R16E, SEC32 1433 Comment
  CAS-BOT-BC240085  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak Comment
  RSA483309  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi south of Ravendale, lower slopes Observation Peak Comment
  UCD92555  Secale cereale D. Haskelle 2000-2-7 s.n. Lassen Doyle. Comment
  UC205197  Sedum stenopetalum Franklin P. Nutting Lassen Dixey Valley Dixey Valley (sage-brush flat) Comment
  CDA34518  Senecio aronicoides B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  CDA38660  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 PDR# 1535022 Lassen South of Adin; Hwy. 139 at Milepost 58. 0 Comment
  CHSC54176  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. Meadow. 1267 Comment
  UC1586592  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen ca 7 mi ne Bieber (s end of Elkins Ln (100 ft s of Modoc-Lassen county line)); Ash Creek Wildlife Area 1267 Comment
  CAS-BOT-BC363686  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen About 4 miles east of Westwood 1432 Comment
  SBBG8784  Senecio hydrophilus H. and M. Dearing 1938-7-1 2241 Lassen 12 mi W of Susanville Comment
  UC1142925  Senecio hydrophilus A. L. Hormay 1941-6-23 12 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 Comment
  SEINET10799223  Senecio integerrimus Billy Joe Cox 1971-6-2 Cox 2993 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon Pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-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
  CHSC61620  Senecio integerrimus var. exaltatus Arthur C. Barrett 1915-7-1 2 Lassen Laufman Ranger Stat. 1463 Comment
  JEPS85743  Senecio integerrimus var. exaltatus Roy E. Buck and Robert A. Price 1988-6-26 1031 Lassen ca 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  UC1063253  Senecio integerrimus var. exaltatus A. Simontacchi 1940-5-15 712 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quad. 1699 Comment
  UC1776693  Senecio integerrimus var. exaltatus G. Schoolcraft 1994-7-7 2368 Lassen About 1 mile west of Boot Lake 219 Comment
  CDA8680  Senecio serra T. C. Fuller 1959-7-7 4726 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  JEPS79212  Senecio serra var. serra L. R. Heckard with R. C. Bacigalupi 1980-6-12 5253 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  JEPS117478  Setaria viridis Lowell Ahart, John Dittes 2010-8-31 17139 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
  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
  JEPS117494  Sidalcea glaucescens Lowell Ahart, John Dittes 2010-7-31 17016 Lassen On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1143016  Sidalcea glaucescens August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn; Lassen National Forest, nw of Black's Mtn 1706 Comment
  CAS-BOT-BC205766  Sidalcea oregana L. S. Smith 1918-8-12 1031 Lassen Modoc National Forest. Camp One Comment
  POM260336  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UC1537657  Sidalcea oregana subsp. oregana Gordon H. True Jr. 1937-7-10 789 Lassen rocky mesa near Skeedaddle; near Skeedaddle 1493 Comment
  CHSC99148  Sidalcea oregana subsp. spicata Lowell Ahart; John Dittes 2008-6-19 14890 Lassen 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
  POM253297  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 1 mile East of Westwood. 1524 Comment
  CAS-BOT-BC384311  Silene bernardina Clare B. Hardham 1971-8-22 18369 Lassen Diamond Mountain 2133 Comment
  RSA123272  Silene bernardina L. R. Short, D. Gish 1936-7-15 S- 487 Lassen MDM, Burgess Spr. Exp. Range; Forest: Lassen. 1744 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
  UC311415  Silene lemmonii Marcus E. Jones, A. M. 1897-6-28 Lassen Perkin's Ranch Diamond Mt., , Perkin's Ranch (Susanville) 1828 Comment
  SEINET8879824  Silene menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc NF, along Blue Lake Road N of Blue Lake, above Parsnip Creek, ca 15 miles ESE of Likely. 1860 Comment
  SDSU4478  Silene menziesii D. F. Howe 1964-8-1 3908 Lassen Parsnip Creek, Warner Mts., Modoc National Forest. 1829 Comment
  CHSC106846  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen Ridge of Diamond Mts ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville. 2255 Comment
  JEPS87996  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ca 1.5 mi e Diamond Peak (ca 10 airmi due s of Susanville, ridge of Diamond Mts.); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  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
  CAS-BOT-BC389548  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  UC465657  Silene occidentalis subsp. occidentalis Franklin P. Nutting Lassen Silver Lake Comment
  CHSC111252  Sisymbrium altissimum L. P. Janeway; B. Castro 2012-7-2 10935 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS107807  Sisyrinchium bellum Lowell Ahart, John Dittes 2005-6-2 11948 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  UC4218  Sisyrinchium bellum J. Burtt Davy Jun 17 1897-Jun 24 1897 3302 Lassen Tule Confederacy Adobe Meadows; Honey Lake Valley Comment
  UC477505  Sisyrinchium bellum Geo. A. Fisher 1928-6-23 30 Lassen Halls Flat 1615 Comment
  UC21381  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  CHSC106203  Solanum physalifolium var. nitidibaccatum 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
  CDA34234  Solanum sarrachoides L. Ahart, J. Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4,235 feet from Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC365369  Solidago elongata B. C. Cain 1925-8-24 78 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CHSC59081  Solidago elongata Vernon H. Oswald; Lowell Ahart 1992-8-25 5177 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Edge of meadow. 1950 Comment
  JEPS103173  Solidago velutina subsp. californica G. Schoolcraft 1994-8-29 2426 Lassen About 1 mile west of Susanville up Piute Creek 1341 Comment
  SBBG3122  Sorbus sitchensis H. and M. Dearing 1939-6-12 3644 Lassen S of Lassen Comment
  HSC21340  Sparganium angustifolium R. G. Means 1962-7-4 71 Lassen Hwy. 139 at Slate Creek 1616 Comment
  HSC95260  Sparganium emersum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 530 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  CAS-BOT-BC390559  Spergularia rubra G. Schoolcraft 1997-8-6 2656 Lassen Along w. fork of Gold Run Creek about 8 miles sw of Susanville 1859 Comment
  CAS-BOT-BC213213  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Standish Comment
  CAS-BOT-BC213212  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Transplanted to the garden of Edward and Luella Bass in Standish, from Stacy, east of the south end of Honey Lake 1219 Comment
  UC2042785  Sphaeromeria cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7192 Lassen Skeedaddle Mountains on NE side of Honey Lake, on S side of Hot Springs. Comment
  CDA8825  Sphaeromeria potentilloides var. potentilloides Gary Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 0 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-BC149623  Spiraea douglasii Louella Bass 1973-6-17 EV - 118 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC149627  Spiraea douglasii B. C. Cain 1925-8-24 80 Lassen 1 mile below Drakesbad, Mt. Lassen Nat. Park 1645 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
  CAS-BOT-BC421460  Spiraea splendens M. S. Baker; Frank Nutting 1894-7-30 s.n. Lassen Silver Lake Comment
  UC845562  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen meadow about 1 mi e Westwood 1524 Comment
  RSA31977  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen About 2 miles east of Westwood. 1524 Comment
  HSC26818  Stanleya elata D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19286 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC60992  Stanleya viridiflora H. D. Ripley; R. C. Barneby 1943-6-15 5761 a Lassen Smoke Creek, northeast of Kesiland [illegible?]. 1341 Comment
  CDA25155  Stanleya viridiflora L. Bass 1982-7-25 Oct- 82 Lassen Near Karlo, about 12 miles north of Litchfield. Comment
  HSC4289  Stellaria longipes M. T. Milligan 1964-7-16 139 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  SJSU8510  Stellaria longipes subsp. longipes J. W. Tilden 1960-6-27 1516 Lassen by Moonlight Rd c. 5 mi E of Westwood 1524 Comment
  CHSC5211  Stenotus acaulis J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  JEPS94459  Stenotus acaulis Vernon Oswald and Lowell Ahart 1997-6-24 8630 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
  UC86569  Stenotus acaulis T. S. Brandegee 1892-7-2 Lassen Near Susanville Comment
  CAS-BOT-BC375066  Stephanomeria Gordon H. True 1973-8-22 7657 Lassen North shore of Honey Lake ca. 5 miles east of Janesville & just west of Hartson Reservoir 1219 Comment
  JEPS28674  Stephanomeria tenuifolia George W. Gillett 1957-7-26 901 Lassen Butte Lake, point of rocks w of outlet an above trail Lassen Volcanic National Park 1844 Comment
  UC1523732  Stephanomeria tenuifolia Gary Schoolcraft 1981-7-7 513 Lassen nw of Susanville Peak 2011 Comment
  HSC79992  Stipa comata William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  SEINET10443621  Stipa thurberiana M. Church 2016-6-21 5 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1507 Comment
  SEINET8512762  Stipa thurberiana A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1093 Lassen Costantia Allotment. Highway 395 North into California, then right on paved entrance road before Red Rock Road and red rock formation, follow road right (South), then left (East) at top of first hill, go in roughly 0.5 miles, population is along roadside 1461 Comment
  UCR119160  Stipa thurberiana Beecher Crampton 1964-6-27 7095 Lassen Modoc Plateau, 5 miles southwest of Ravendale. 1707 Comment
  CHSC80622  Streptanthella longirostris Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolscraft 2001-6-2 10039 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  HSC23510  Stuckenia pectinata R. Carter 1967-7-13 594 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  UC7234  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3397 Lassen Amedee Honey Lake Valley Comment
  JEPS114622  Swertia albicaulis var. albicaulis Lowell Ahart, John Dittes 2008-6-19 14881 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC1123453  Swertia albicaulis var. albicaulis Robert W. Gardner 1937-6-16 G- 13 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798