Search Results — 2000 specimen records retrieved (1569 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
  CDA467  Abies concolor Mark Lubinski 1999-10-12 PDR# 070105 Lassen 1 mi. W of State Route 44 and 36 (intersection). Comment
  CHSC84856  Abies concolor L. P. Janeway; B. Castro 2003-10-5 8002 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  RSA603232  Acer glabrum var. torreyi C. Epling, Wm. Robinson 1935-7-19 s.n. Lassen Sulphur Spring, Lassen Park Comment
Read comments
May 1 2013
  CHSC6285  Achillea millefolium R. Clicquennoi 1967-7-1 14 Lassen 16 mi n of Susanville, Calif. Highway 139. 1645 Comment
  CHSC67055  Achillea millefolium Willis Ball 1969-6-20 19 Lassen Found in Dean's Meadow. 1950 Comment
  SEINET6700552 Image available Achillea millefolium T. L. Breene, H. Sampson 1937-9-27 77 Lassen Reno Junction Comment
  UC1136758  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley 1700 Comment
  SEINET11842145  Achillea millefolium Unknown 1978-1 30 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. T29N, R10E, sec. 24 1500 Comment
  UCD51450  Achnatherum X bloomeri Howard Gebel 1966-6-14 s.n. Lassen Belfast tableland. 1341 Comment
  CHSC30608  Achnatherum hymenoides R. C. Abbott 1975-6-17 3 Lassen 18.5 m w of road to Lassen Co youth camp, directly e of Eagle Lake Field Station. 1554 Comment
  RSA716057  Achnatherum hymenoides L. Ahart, John Dittes 2005-6-2 11996 Lassen Long Valley, about 41/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1428 Comment
  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
  UCD50374  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  UCD50597  Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  RSA129475  Achnatherum lemmonii var. lemmonii G. A. Fischer 1933-7-14 252 Lassen Lassen Forest 1768 Comment
  UCD50787  Achnatherum nelsonii R. Tofsrud 1947-7-1 221 Lassen 13 miles E of Madeline. Comment
  SEINET249960 Image available Achnatherum nevadense Beecher Crampton 1954-7-5 2064 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UCD37479  Achnatherum nevadense Beecher Crampton 1960-6-18 5729 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  SEINET11695935  Achnatherum nevadense Unknown 1960-6-18 5729 Lassen southern Warner Mountains, 1.25 mi N of Blue Lake, in vicinity of Blue Lake Ranch 1981 Comment
  CAS-BOT-BC216849  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-7-31 50059 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  JEPS456  Achnatherum occidentale subsp. californicum G. S. Crew and C. S. Robinson 1927-6-25 29 Lassen near Westwood <Tet?>; Lassen Forest 1706 Comment
  UCD51122  Achnatherum occidentale subsp. californicum L. R. Short; W. Gansberg 1936-6-2 S 366 Lassen Burgess Spring Experimental Range, Lassen National Forest. 1858 Comment
  POM115575  Achnatherum occidentale subsp. occidentale Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC218615  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49486 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  UCD32668  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-6 2069 Lassen Lassen County, 1 mile east of Johnstonville, along US highway 1395. 1219 Comment
  UCD51167  Achnatherum occidentale subsp. pubescens A. H. Shunk 1923-8-1 s.n. Lassen Madeline. Comment
  UCD51215  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  JEPS102671  Achnatherum speciosum V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10034 Lassen NE of Doyle (Fort Sage Mountains, trailhead to top of mountain from the end of a 4WD road) 1798 Comment
  SEINET201660 Image available Achnatherum speciosum A. Cronquist, AH Holmgren 1992-6-17 8467 Lassen 50 mi SE of Susanville 1372 Comment
  JEPS107797  Achnatherum thurberianum Lowell Ahart, John Dittes 2005-6-2 11946 Lassen 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, about 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  UCD32656  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD34873  Achnatherum thurberianum Beecher Crampton 1964-6-27 7095 Lassen Lassen County, ca. 5 miles S.W. of Ravendale, BLM land. Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  CHSC29909  Acmispon americanus var. americanus Robin L. Ondricek 1978-7-15 99 Lassen East side of Lower Dry Lake. 1645 Comment
  CHSC113083  Acmispon denticulatus Lowell Ahart; John Dittes 2013-7-23 18888 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS60356  Aconitum columbianum Brown and Wieslander 1922-7-30 20 Lassen Eagle Lake, Martin Springs Comment
  CAS-BOT-BC418769  Aconogonon phytolaccifolium Alice Eastwood 1912-8-22 1878 Lassen Morgans Springs [Morgans Hot Springs, el. 5000 ft.], Lassen Butte Region Comment
  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
  CAS-BOT-BC391608  Actaea rubra Louella Bass 1973-6-17 119 Lassen Elysian Valley 1325 Comment
  SEINET4339237  Aegilops triuncialis G. Schoolcraft 1997-6-26 2603 Lassen 1.2 mile north of Susanville, west of Highway 395 1326 Comment
  CHSC25082  Agastache parvifolia K. R. Stern 1967-6-30 2455 Lassen West Central side of Eagle Lake. 1554 Comment
  CDA40751  Agastache parvifolia T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20381 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  HSC86888  Agastache parvifolia R. Carter 1967-7-3 584 Lassen S side of rd. on way to Eagle Lake Biology Station and Willow Creek 1585 Comment
  OBI77068  Agastache urticifolia Anthony Baniaga 2011-7-5 417 Lassen Lassen NF. E of Willard Crk Fredonyer Pass quad T29N R10E sec 25 NE of NW 1473 Comment
  CAS-BOT-BC30233  Ageratina occidentalis Hans Leschke 1964-9-4 1894 Lassen Lassen Highway near Diamond Point Comment
  UC29371  Agoseris grandiflora var. grandiflora M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. 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
  UC1924573  Agoseris heterophylla var. heterophylla Debra Valov 2006-5-29 2006023 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  POM318656  Agoseris heterophylla var. heterophylla Patricia Wilder 1971-6-20 5053 Lassen About 6 miles southeast of Adin on Adin - Madelaine Road; Modoc National Forest; Cascades mountain range, Cascade River drainage area 1768 Comment
  CAS-BOT-BC13412  Agoseris retrorsa A. A. Heller 1940-5-22 15644 Lassen Hill above Westwood Cemetary 1524 Comment
  UC773915  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  SEINET10964052  Agropyron trachycaulum R. Ondricek 1978-8-2 Ondricek 113 Lassen North edge of dam at Murrers Upper Meadow. T32N, R11E, E edge of Sec. 26, Fredonyer Peak Quadrangle, 15 ft. 1548 Comment
  SEINET7297772 Image available Agrositanion John Thomas Howell 1976-1 52002 Lassen Open juniper-Jeffrey pine woodland on basaltic rock, about 5 miles west of Fredonyer Pass near confluecne of Susan River and Willard Creek. 1433 Comment
  UC1137133  Agrostis alba August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest, Bogard Ranger Station Comment
  CAS-BOT-BC127237  Agrostis exarata John Thomas Howell; Gordon H. True 1973-7-31 50021 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1737 Comment
  CAS-BOT-BC127238  Agrostis exarata Malcom A. Nobs; S. Galen Smith 1949-7-21 1057 Lassen 4 miles north of Madeline. Comment
  CAS-BOT-BC127240  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50226 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  POM313172  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  RSA0105582  Agrostis exarata Lowell Ahart, John Dittes 2013-7-22 18858 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1037106  Agrostis exarata Leo Whitney 1934-9-1 3000 Lassen Fredonyer Campground Lassen National Forest 1706 Comment
  UCD52277  Agrostis exarata Malcolm A. Nobs; Galen Smith 1949-7-21 1057 Lassen 4 miles N of Madeline. Comment
  CAS-BOT-BC139677  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49485 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC139678  Agrostis gigantea John Thomas Howell 1975-7-23 51401 Lassen Sierra Nevada. Susanville. 1295 Comment
  CAS-BOT-BC139294  Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen Lassen Volcanic National Park. Snag Lake. Margin of gravel bars 100 yards above lake near south shore. 1850 Comment
  RSA299277  Agrostis idahoensis J. T. Howell, Gordon H. True 1973-8-1 50232 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2134 Comment
  UC1594652  Agrostis pallens Vernon H. Oswald and Lowell Ahart 1992-7-16 5107 Lassen s side of Hwy 44 1.2 mi se County Road A21 (between Old Station and Susanville); Long Lake 1745 Comment
  UCD53246  Agrostis pallens L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  UC60211  Agrostis stolonifera J. Burtt Davy Jun 17 1897-Jun 24 1897 3307 Lassen Tule Confederacy Honey Lake Valley Comment
  HSC63727  Aliciella leptomeria Teresa Prendusi 1980-5-19 1134 Lassen Saddle Rock. 1524 Comment
  POM75042  Aliciella lottiae Marcus E. Jones 1897-6-22 9875 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CHSC117273  Alisma triviale Lowell Ahart; John Dittes 2016-7-15 21221 Lassen About 50 yards west of the road and about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD150402  Alisma triviale William Anderson 1963-7-10 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC131926  Allium Mike Vasey 1990-6-30 9060 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road, Modoc National Forest 1500 Comment
  GMDRC7739  Allium acuminatum J. M. Andre, G. Clifton 1993-6-1 33419 Lassen Modoc Plateau: along US Hwy 395 approx 11 mi. SE of Ravendale, just north of Tule Patch Spring, east of Snowstorm Mtn 1588 Comment
  CAS-BOT-BC461096  Allium anceps B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6553 Lassen Just S of Ravendale 1580 Comment
  CHSC7663  Allium anceps Beverley J. Wise 1969-5-4 140 Lassen 23.4 mi. east of Susanville on Hwy 395. 1615 Comment
  JEPS103169  Allium atrorubens var. atrorubens Beth Corbin 2002-6-4 1077 Lassen About 1/8 mi E of Viewland Monument on Hwy 395. 1371 Comment
  POM110223  Allium campanulatum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 Comment
  CAS-BOT-BC474049  Allium parvum G. Schoolcraft 1998-4-27 2704 Lassen N. end of Ft. Sage Mtn 1859 Comment
  RSA367108  Allium platycaule Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
Read comments
Nov 17 2011
  RSA537548  Alnus incana Barbara Ertter 1988-7-25 7868 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  CAS-BOT-BC171315  Alnus incana subsp. tenuifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49461 Lassen Elysian Valley, W of Janesville. Sierra Nevada 1325 Comment
  JEPS87183  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  CAS-BOT-BC138162  Alopecurus aequalis var. aequalis John Thomas Howell 1975-7-23 51388 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC117285  Alopecurus carolinianus Lowell Ahart; John Dittes 2016-7-15 21214 Lassen About 300b yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) mortheast of Bieber, Big Valley. 1261 Comment
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley Comment
  JEPS107365  Alopecurus pratensis Lowell Ahart, John Dittes 2005-6-1 11868 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1924568  Alopecurus pratensis Debra Valov 2006-5-28 2006040 Lassen Bieber off County Rd. A2 c. 12 km east of Hwy 299 1279 Comment
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  SEINET5340073  Alyssum desertorum J. A. Young 1982-1 s.n. Lassen M. Meyer's Ranch, Adin. 1372 Comment
  UC1924262  Alyssum minus subsp. micranthum Debra Valov 2004-5-31 2004226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 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
  CAS-BOT-BC174355  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca. 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles east of Sierra Valley 1584 Comment
  CAS-BOT-BC42889  Ambrosia acanthicarpa P. Monnet 1913-8-1 966 Lassen unspecified Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 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
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley 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
  CAS-BOT-BC222253  Amsinckia John Thomas Howell 1934-6-16 12219 Lassen Big Valley, 4 miles ne. of Bieber Comment
  CHSC99503  Amsinckia intermedia Lowell Ahart; John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC99744  Amsinckia menziesii Lowell Ahart; John Dittes 2008-6-22 15042 Lassen On the east side 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
  SEINET10455820  Amsinckia menziesii Paul Gallian, David B. Dunn 1971-6-2 Gallian 480 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus-Jeffrey Pine on mountain range to W at approximately the same altitude. 1250 Comment
  CHSC106685  Amsinckia tessellata B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC25304  Amsinckia tessellata Pauleen Broyles 1977-6-1 151 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  SEINET12492784  Amsinckia tessellata F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  CHSC5040  Anaphalis L. B. Barlow 1967-7-4 95 Lassen 5 mi. south of Eagle Lake Biological Station on Gallatin Beach Road. 1737 Comment
  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
  CAS-BOT-BC15606  Ancistrocarphus filagineus Alice Eastwood; J. T. Howell 1940-6-16 8354 Lassen Constantia Comment
  UC1562726  Angelica breweri Barbara Ertter 1988-7-25 7869 Lassen 1.5 mi e of Diamond Peak (10 air mi due s of Susanville, Diamond Mountains); Diamond Mountains 2255 Comment
  CHSC71067  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9121 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  SEINET6735001 Image available Anisocoma acaulis F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CHSC23527  Antennaria argentea Wayne O. Baum 1971-7-12 71 -54 Lassen E. slope of Gallatin Peak. 1950 Comment
  SEINET3145644  Antennaria argentea M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  CAS-BOT-BC63952  Antennaria argentea H. D. Ripley; R. C. Barneby 1944-5-29 5958 Lassen Susanville Comment
  SEINET2029685 Image available Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds about 12 miles north of Fall River Mills (in Shasta County) on Fall River 1372 Comment
  SEINET6735052 Image available Antennaria corymbosa B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11496 Lassen Blue Door Flat, seven or eight miles east of HWY 295 on county road 510 1774 Comment
  CAS-BOT-BC59220  Antennaria dimorpha James Jokerst 1983-5-31 1792 Lassen Grasshopper Valley Quad. Near Madeline Plains 1583 Comment
  HSC68156  Antennaria dimorpha J. P. Smith, J. O. Sawyer 1971-5-23 4657 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  UC1951075  Antennaria dimorpha Debra Valov 2009-4-25 2009016 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC773914  Antennaria dimorpha L. R. Short 1936-6-8 S- 386 Lassen Burgess Sp. Exp. Range Thompson Meadow 1743 Comment
  CAS-BOT-BC69141  Antennaria geyeri Clare B. Hardham 1969-8-28 17453 D Lassen West of Janesville Comment
  CHSC60809  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 .1 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
  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
  CAS-BOT-BC69140  Antennaria geyeri Clarence R. Quick 1964-7-29 64 -89 Lassen Blacks Mt. Experimental Forest 1798 Comment
  SJSU7638  Antennaria geyeri J. W. Tilden 1960-6-27 1510 Lassen foot of Moonlight Road in outskirts Westwood 1524 Comment
  CAS-BOT-BC58694  Antennaria luzuloides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16360 Lassen Near NE end of Eagle Lake Comment
  UC1137667  Antennaria luzuloides L. R. Short and J. Warren 1936-6-23 S- 452 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1741 Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  RSA637571  Antennaria luzuloides Michael A. Vincent 1999-6-9 8577 Lassen Bureau of Land Management land, Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), S of BLM road 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  CHSC66233  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1996-6-24 7857 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  SBBG63415  Antennaria rosea S. W. Hutchinson, M. N. Ackley -Jun-1925 214 Lassen Eagle Lake 1554 Comment
  UC1583976  Antennaria rosea G. Schoolcraft 1990-7-2 2103 Lassen w of Cold Spring Mtn. 1645 Comment
  UCD128940  Antennaria rosea Beecher Crampton 1960-6-18 5712 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  JEPS94555  Antennaria rosea subsp. confinis Vernon Oswald and Lowell Ahart 1997-6-24 8647 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  JEPS95712  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 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 flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  JEPS96088  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1996-6-17 7777 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, n. side of Hwy. 36 between trail and hwy. bridges spanning the Susan R.); Modoc Plateau 1432 Comment
  CDA39744  Apocynum androsaemifolium Taylor 1938-7-18 s.n. Lassen Susanville. 0 Comment
  CHSC75442  Apocynum cannabinum Vernon H. Oswald; Lowell Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. 1356 Comment
  CHSC1430  Aquilegia formosa K. Chew 1954-7-9 Lassen Along Pine Creek just below Stephens meadow. 1828 Comment
  CHSC52772  Aquilegia formosa George Deniso 1978-7-11 65 Lassen ca. .75 km E of Gallatin Beach, S end of Eagle L. 1584 Comment
  UC773880  Aquilegia formosa L. R. Short 1936-6-26 S- 407 Lassen Lassen National Forest, Burgess Spr. Exp. Range 1837 Comment
  POM99591  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  RSA0126363  Arabis glabra Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UCR18735  Arabis holboellii Frank C. Vasek 1975-7-11 750711- 13 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  NY119566  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  SEINET2471272  Arceuthobium abietinum R. L. Mathiasen 2008-9-15 2008 -27 Lassen 12.8 km S. of jct. of Westwood Road on State Route 44 1720 Comment
  UC549426  Arctostaphylos patula F. Farris 1934-12-30 Lassen Diamond Mt. 1524 Comment
  CAS-BOT-BC42165  Arctostaphylos patula subsp. patula Ida M. Gifford 1933-12-27 s.n. Lassen Near Susanville 1310 Comment
  HSC7750  Arctostaphylos viscida R. J. Vernimen 1963-5-4 28 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
Read comments
Apr 29 2013
  CHSC106087  Arenaria congesta var. congesta Lowell Ahart; John Dittes 2010-7-31 17011 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  JEPS117259  Arenaria congesta var. congesta Lowell Ahart, John Dittes 2010-7-31 17011 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  JEPS94458  Arenaria congesta var. subcongesta Vernon Oswald and Lowell Ahart 1997-6-24 8632 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  JEPS124520 Image available Argemone munita Virginia Hardham 1965-7-12 115 Lassen 1.9 mi. north of Milford on HW 395 Comment
  RSA11786  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3345 Lassen Hills north of Susanville Comment
  RSA647527  Argemone munita subsp. rotundata Marion P. Harthill 1972-6-16 789 Lassen Doyle. Comment
  UC1191450  Argemone rotundata Verne Grant, Irving Schneider 1947-9-5 8367 Lassen nw shore of Eagle Lake, by Sam Webb's place (Spaulding) Eagle Lake Comment
  UC72736  Argemone rotundata Milo S. Baker Lassen Milford Comment
  CAS-BOT-BC400405  Aristolochia californica Jas. McMurphy 1914-4-1 s.n. Lassen Pitt Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  JEPS17745  Arnica chamissonis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5414 Lassen Mosquito Creek (along), in Corporation Meadow, s end of Warner Mts. Modoc National Forest, Warner Mts., Corporation Meadow, Mosq 2042 Comment
  SBBG128899  Arnica chamissonis L. Ahart,J. Dittes 2008-6-20 14902 Lassen ca. 150 yards SW of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  HSC104020  Arnica chamissonis subsp. foliosa L. Ahart, John Dittes 2008-6-20 14902 Lassen About 7.0 air mi. NE of Bieber, ~4.0 air mi. NE of Headquarters at Ash Creek State Wildlife Area; ~ 10 yds. west of where the levee road crosses Big Valley Canal, in Big Valley. 1264 Comment
  POM203853  Arnica chamissonis subsp. foliosa J. T. Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  CDA10117  Arnica cordifolia T. C. Fuller 1963-7-15 10896 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  OBI75878  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 SW of SW 1500 Comment
  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
  CHSC5221  Arnica dealbata 1944-7-26 Lassen Juniper Lake. 2055 Comment
  JEPS21729  Arnica dealbata Franklin P. Nutting Lassen mts s Eagle Lake Eagle Lake Comment
  UC2027205  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen National Forest. About 1/2 mile WNW of Griffith Hill, ca 30 ft N of 30N21. Swain Mountain quadrangle Comment
  UC485811  Arnica dealbata H. E. and S. T. Parks June 1928 236 Lassen Drakesbad Lassen National Park Comment
  UC1609098  Arnica fulgens Vernon H. Oswald and Lowell Ahart 1993-6-28 5580 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  CHSC66715  Arnica mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8123 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  JEPS35883  Arnica mollis Frances D. Payne 1929-7-12 99 Lassen Upper Silver Creek, se extremity of Warner Mts Warner Mountains, Upper Silver Creek 2499 Comment
  UC1776719  Arnica parryi G. Schoolcraft 1997-8-1 2386 Lassen About 2 miles W of Boot Lake 2255 Comment
  CDA10132  Arnica sororia Gary Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin & Madeline. Comment
  CDA10134  Artemisia abrotanum E. E. Fix 1964-11-4 Lassen From Soil Conservation Service Nevada. 0 Comment
  SEINET222925 Image available Artemisia cana A. A. Beetle 1957-8-16 Lassen Lassen County: Between Ravendale and Termo. Comment
  CAS-BOT-BC90329  Artemisia douglasiana Clare B. Hardham 1969-8-28 17443 Lassen slope west of Janesville Comment
  CAS-BOT-BC90332  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen Along BJ Trail west of Susanville at Hobo Camp Comment
  JEPS28717  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen near Butte Lake Trail (above Snag Lake); Lassen Volcanic National Park 1859 Comment
Read comments
Aug 23 2012
  UC1567427  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen w of Susanville (along BJ Trail at Hobo Camp.) 1310 Comment
  CAS-BOT-BC90328  Artemisia douglasiana Ynez Whilton Winblad 1935-9-28 s.n. Lassen Horse Lake Comment
  SEINET6775481 Image available Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near intersection of Wingfield and Bass Hill Roads 1323 Comment
  CAS-BOT-BC93741  Artemisia ludoviciana subsp. incompta Clare B. Hardham 1969-8-28 17463 Lassen Sierra Nevada - slope west of Janesville Comment
  CHSC65291  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald; Lowell Ahart 1995-8-14 7196 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  JEPS97304  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald and L. Ahart 1995-8-14 7196 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  UC762615  Artemisia nova Robert F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  CHSC13797  Artemisia tridentata Cathy Crittenden 1970-7-8 28 Lassen Approx. 100 yds north of E. L. B. S. 1524 Comment
  JEPS28804  Artemisia tridentata George W. Gillett 1957-9-4 1132 Lassen near Butte Lake (intersection of the Widow Lake-Snag Lake trails); Lassen Volcanic National Park 1859 Comment
  CHSC110309  Artemisia tridentata subsp. tridentata L. P. Janeway; B. Castro 2012-7-2 10927 Lassen Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road. 1473 Comment
  CHSC115816  Asclepias fascicularis Lowell Ahart; John Dittes 2015-7-14 20325 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. 1269 Comment
  CHSC6223  Asclepias speciosa M. West 1946-7-7 Lassen Eagle Lake 1584 Comment
  RSA18255  Aster foliaceus var. parryi C. B. Wolf 1929-9-1 3787 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  RSA504836  Aster modestus Bruce Bartholomew, B. Anderson 1988-7-22 4499 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
Read comments
Jan 31 2013
  POM204051  Astragalus accidens var. hendersonii J. T. Howell 1934-6-10 11875 Lassen Janesville Comment
  SEINET5323325  Astragalus andersonii M. J. Williams 1974-8-4 L- 74 -83 Lassen west of Hwy 395, near Hwy 70 in former burn area 1494 Comment
  UC1594460  Astragalus anxius Meinke and Lantz 1991-7-16 6108 Lassen ca 25 km w Madeline (along Ash Valley Rd.); Ash Valley 1550 Comment
  SEINET8358141  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley ca 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  UC1567413  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen along n shore Eagle Lake; n shore Eagle Lake 1554 Comment
  UC82577  Astragalus canadensis var. brevidens unknown 1892-6-20 Lassen Milford Comment
  SEINET12162068  Astragalus curvicarpus K. R. Stern 1974-1 5816 Lassen 16.5 mi W of Madeline, on Madeline-Adin Rd. Likely Quadrangle, sec. 32, R11E T35N 1548 Comment
  CAS-BOT-BC177835  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-16 8346 Lassen Buntingville Comment
  NY803534  Astragalus curvicarpus var. curvicarpus D. W. McNeal 1983-6-5 2839 Lassen Beside Highway 395, 9.2 miles north of the Plumas Co. line Comment
  NY803535  Astragalus curvicarpus var. curvicarpus M. J. Williams 1973-5-12 73-C- 16 Lassen Near Herlong Turn from Highway 395 1250 Comment
  JEPS117260  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS95714  Astragalus filipes Vernon H. Oswald and L. Ahart 1995-6-19 6883 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. Erect, many-stemmed herbaceous perennial. Corolla pale cream. 1371 Comment
  RSA647557  Astragalus gibbsii Marion P. Harthill 1971-6-20 220 Lassen Ravendale Comment
  SD43503  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford, dry silty flats 1260 Comment
  SEINET10486588  Astragalus gibbsii Katherine L. Morris 1973-5-25 Morris 214 Lassen Collected in an area of artemisia tridentata, 4 mi se of susanville, on us 36. Comment
  CAS-BOT-BC186911  Astragalus inversus Leo Whitney 1935-7-21 1931 Lassen Near Harvey Valley Spring, Lassen N.F. 1737 Comment
  CAS-BOT-BC186913  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5749 Lassen W. of Susanville 1310 Comment
  RSA111016  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 5749 Lassen West of Susanville 1311 Comment
  RSA111018  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 4300 Lassen West of Susanville 1310 Comment
  RSA0006774  Astragalus iodanthus var. diaphanoides H. D. Ripley, R. C. Barneby 1943-1-15 5768 Lassen Snake Creek, 13 miles NE of Viewland [?]. 1402 Comment
  CAS-BOT-BC229046  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC229050  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC229052  Astragalus lemmonii Alice Eastwood; John Thomas Howell 1940-6-11 7962 Lassen Eastern Fall River Valley Comment
  CHSC99730  Astragalus lemmonii Lowell Ahart; John Dittes 2008-6-20 14968 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS118159  Astragalus lentiginosus var. floribundus Dean W. Taylor 2009-5-20 20605 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mi NW of Brown Cabin (USGS map, site) 1478 Comment
  JEPS118160  Astragalus lentiginosus var. floribundus Dean W. Taylor 2009-5-20 20605 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mi NW of Brown Cabin (USGS map, site) 1478 Comment
  CHSC71388  Astragalus lentiginosus var. salinus Vernon H. Oswald; B. Corbin, A. Sanger, G. Schoolcraft 1998-7-6 9247 Lassen East side of Eagle Lake on BLM land just east of the Lassen Youth Camp. 1584 Comment
  CHSC7666  Astragalus malacus Beverley J. Wise 1969-5-3 55 Lassen 4.6 mi. east of junction of Hwy 395 on Las. Co. road 338 (Smoke Creek Road). 1554 Comment
  RSA0006819  Astragalus malacus H. D. Ripley, R. C. Barneby 1944-5-30 5974 Lassen South of Ravendale. 1677 Comment
  CAS-BOT-BC192841  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC192843  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC192847  Astragalus pulsiferae H. D. Ripley; R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley 1615 Comment
  UC1567373  Astragalus pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen e slope Shaffer Mtn. 1524 Comment
  CAS-BOT-BC192854  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen East side of Beckwourth Pass 1493 Comment
  CHSC98311  Astragalus pulsiferae var. pulsiferae R. Ondricek-Fallscheer 1999-7-2 196 Lassen About 3/4 air mi SW of Hallelujah Junction (the junction of Hwy 70 and Hwy 395). 1499 Comment
  UC372929  Astragalus pulsiferae var. pulsiferae Marcus E. Jones, A. M. 1897-6-19 Lassen Chat 1615 Comment
  SJSU8415  Astragalus purshii J. W. Tilden 1960-6-27 1498 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  CAS-BOT-BC194088  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Perkin's Ranch, top of Diamond Mt., Susanville 2225 Comment
  CAS-BOT-BC194097  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8352 Lassen Omira Comment
  RSA121818  Astragalus purshii var. purshii G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 249 Lassen Forest: Lassen. 1784 Comment
  CAS-BOT-BC194091  Astragalus purshii var. purshii Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CHSC68747  Astragalus purshii var. tinctus Vernon H. Oswald; Lowell Ahart 1997-5-27 8517 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat) 2.6 mi northeast of Hwy. 139. 1682 Comment
  JEPS114761  Astragalus purshii var. tinctus Lowell Ahart, John Dittes 2008-6-19 14888 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  RSA339987  Astragalus whitneyi Noel Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 2195 Comment
  RSA639008  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 Lassen Bureau of Land Management land, Madeline Plains: SW of US Rt 395, SE of CR 515 (Termo road), S of BLM road 1614, and SW of Termo. Along jeep road to Schott Canyon. Comment
  SEINET12165119  Astragalus whitneyi N. H. Holmgren, Holmgren, P. K. 1980-1 9514 Lassen Observation Peak, S side of Mt. 18km airline dist. E of Ravendale. T34N R16E S33 Comment
  JEPS94456  Astragalus whitneyi var. confusus Vernon Oswald and Lowell Ahart 1997-6-24 8634 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CAS-BOT-BC200875  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 7 miles below Eagle Lake 1524 Comment
  CHSC107993  Athysanus pusillus Lowell Ahart; John Dittes 2011-6-20 17491 Lassen About 40 yards east of the stream, about 70 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  RSA38479  Athysanus pusillus P. A. Munz 1947-5-18 11863 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  CDA23253  Atriplex confertifolia Robin Breckenridge 2007-5-1 PDR# 1349824 B Lassen Wendel. 0 Comment
  UCSB61625  Atriplex confertifolia True, Jr., Gordon 1936-6-24 Lassen North shore of Honey Lake, Honey Lake Valley 1219 Comment
  JEPS95899  Atriplex heterosperma Lowell Ahart 1999-9-13 8208 Lassen on the west 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
  CHSC76273  Atriplex rosea Lowell Ahart; Vernon H. Oswald 1999-9-13 8203 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  RSA122664B  Avena sativa A. Simontacchi 1940-6-13 854 Lassen 3.4 miles W.S.W. of Patterson Mtn.; Halls Flat 1738 Comment
  RSA0089261  Baeria Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  CDA10419  Balsamorhiza hirsuta T. C. Fuller 1963-6-11 10663 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  SEINET11839299  Balsamorhiza hirsuta N. H. Holmgren, Holmgren, P. K. 1978-1 8935 Lassen upper Smoke Creek, just S of Observation Peak, 17 km air ESE of Ravendale 1770 Comment
  CAS-BOT-BC106486  Balsamorhiza hookeri Elmer I. Applegate 1934-5-4 8919 Lassen Plains at south end of Secret Valley Comment
  CHSC7646  Balsamorhiza hookeri Beverly J. Wise 1969-4-17 14 Lassen 1 mi north on Hwy 139. 1341 Comment
  SEINET10924971  Balsamorhiza hookeri Billy Joe Cox 1971-6-2 Cox 3265 Lassen Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  CHSC67422  Balsamorhiza macrolepis var. platylepis James D. Jokerst 1991-5-29 3300 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
  CHSC5234  Barbarea orthoceras A. Santos 1946-6-12 Lassen Eagle Lake. Pine Creek. 1584 Comment
  NY119710  Barbarea orthoceras N. H. Holmgren 1978-6-11 8919 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi.) E of Ravendale and 22.5 km (14 mi.) airline distance 1680 Comment
  SEINET11997544  Barbarea orthoceras N. H. Holmgren, Holmgren, P. K. 1978-1 8919 Lassen vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km E of Ravendale & 1680 Comment
  CDA36736  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. Comment
  JEPS121246  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18871 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  SJSU9993  Beckmannia syzigachne C. L. Kline 1965-7-13 195 Lassen 1.8 mi E of Nubieber on Highway 299 2493 Comment
  UC1100216  Beckmannia syzigachne Herbert L. Mason 1947-7-9 13299 Lassen 5 mi e Bieber Comment
  UCD54547  Bergia texana Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2731 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  JEPS113921  Berteroa incana William Harnach 2006-5-31 1229 Lassen Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch). Comment
  CDA38212  Berula erecta T. C. Fuller 1963-7-15 10891 Lassen South of road to Pittsville, 5.4 miles northwest of Little Valley. 0 Comment
  UC1037310  Betula glandulosa Leo Whitney 1934-7-31 1806 Lassen 7-8 mi sw Eagle Lake (moist stream bank); Lassen National Forest, Bridge Creek, Bridge Creek Camp 1737 Comment
  UC5376  Betula glandulosa M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  CHSC111100  Bidens cernua Lowell Ahart; John Dittes 2012-7-9 18295 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
  JEPS121281  Bidens cernua Lowell Ahart, John Dittes 2013-7-23 18897 Lassen S margin of a levee road, about 100 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS32533  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near, between Jonesville and Standish Honey Lake Comment
  UC30552  Bidens cernua J. Burtt Davy Jun 17 1897-Jun 24 1897 3309 Lassen Tule Confederacy Comment
  HSC42543  Bidens cernua Barbara Kelly 1977-8-9 563 Lassen 15 miles east of Madeline on a dirt road from Adin 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
  CHSC13477  Blepharipappus scaber J. Pitts 1967-6-23 266 Lassen 2 mi s of Eagle Lake Field Station, on the e side of the road. Comment
  CHSC5201  Blepharipappus scaber 1944-7-1 Lassen Eagle Lake. 1584 Comment
  SEINET11261380  Blepharipappus scaber Robert L. Johnson, Mikel R. Stevens 2015-7-10 3922 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  UC577280  Blepharipappus scaber David D. Keck and J. Clausen 1935-6-24 3733 Lassen 2 mi s of Ravendale 1463 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
  SEINET7379326 Image available Blepharipappus scaber J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  SFV7758  Blepharipappus scaber T. Gordon, K. Kimbrough 1975-8-15 1210 Lassen 16 miles south of Adin. 1402 Comment
  RSA0125912  Boechera Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1126591  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC1504460  Boechera pauciflora Reed C. Rollins and Kathryn W. Rollins 1981-5-31 81178 Lassen just n Eagle Lake Comment
  CAS-BOT-BC14092  Boechera pauciflora John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50687 Lassen Sierra Nevada. South and southeast of Diamond Mountain. 2286 Comment
  UC1542747  Boechera pendulocarpa Barbara Ertter with Gary Schoolcraft 1987-6-16 7179 Lassen ca 1 mi w Hot Springs VABM (ne side of Honey Lake); Skeedaddle Mountains 1828 Comment
  CHSC66379  Boechera pinetorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7793 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
  UC1608995  Boechera pinetorum Vernon H. Oswald and Lowell Ahart 1993-6-3 5488 Lassen between Poison Lake and Susanville (Champs Flat Rd (Lassen 105, Forest 32N28Y), 7.0 mi n of its junction with Lassen 21 (32N02) to Eagle Lake, just s of ford over Pine Cr.) 1688 Comment
  CHSC7708  Boechera puberula Beverley J. Wise 1969-4-29 35 Lassen 3.5 mi. north of Susanville on Rnd Valley Rd. off Hwy 139. 1341 Comment
  UCD114424  Boechera puberula Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  CAS-BOT-BC25508  Boechera retrofracta Reed Clark Rollins; Kathryn W. Rollins 1981-5-31 81176 Lassen Just north of Eagle Lake. 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
  CHSC107324  Boechera retrofracta Lowell Ahart; John Dittes 2011-6-20 17509 Lassen Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin. 1511 Comment
  JEPS95056  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1997-5-27 8495 Lassen North of Susanville on Forest Route 38N04 (between Highway 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Highway 139. 1546 Comment
  CAS-BOT-BC25507  Boechera retrofracta Doris Kildale Gillespie 1930-5-14 9383 Lassen 5 miles west of Susanville. Comment
  OBI48088  Boechera sparsiflora Rhonda Riggins 1989-4-27 1649 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line 1676 Comment
  CAS-BOT-BC25900  Boechera suffrutescens John Thomas Howell 1934-7-10 12537 Lassen Between Harvey Valley and Patterson Flats. Comment
  RSA32754  Boisduvalia macrantha A. A. Heller 1938-7-28 15295 Lassen About a mile east of Westwood 1524 Comment
  UC2046019  Bolboschoenus maritimus subsp. paludosus Nick Otting, Carex Working Group 2003-7-19 708 Lassen Modoc Plateau, Biscar Reservoir, 19 air miles northeast of Susanville. Comment
  UC1134039  Brodiaea coronaria subsp. coronaria A. Simontacchi 1940-6-15 871 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat 1767 Comment
  RSA0065492  Bromus breviaristatus Marion P. Harthill 1971-6-21 208 Lassen Susanville. Comment
  SEINET8506610  Bromus briziformis D. W. Taylor 2005-6-29 19380 Lassen Piute Creek, 3 miles West from western edge, Susanville 1311 Comment
  SEINET3921581  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 Comment
  CAS-BOT-BC149585  Bromus carinatus var. carinatus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch. 1463 Comment
  UC1136818  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1820 Comment
  UC1143035  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1820 Comment
  UC53631  Bromus carinatus var. carinatus M. S. Baker and Frank Nutting 1894-7-5 Lassen s of Dixie Valley Comment
  CHSC66419  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1996-6-17 7788 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  POM364020  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  UC1037137  Bromus diandrus Leo Whitney 1935-6-28 3371 Lassen Bieber Comment
  CHSC112471  Bromus hordeaceus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18783 Lassen Along the fence on the west side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CAS-BOT-BC155323  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  CHSC115602  Bromus japonicus Lowell Ahart; John Dittes 2015-7-13 20310 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1024947  Bromus madritensis subsp. rubens Leo Whitney 1935-6-21 3322 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  CHSC106670  Bromus tectorum B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC67074  Bromus tectorum Willis Ball 1969-6-19 2 Lassen Found 100 yds. N.E. of the E.L.B.S. 1554 Comment
  CHSC7696  Bromus tectorum Beverley J. Wise 1969-4-28 127 Lassen North city limits of Milford (Hwy 395). 1310 Comment
  JEPS107312  Bromus tectorum Lowell Ahart, John Dittes 2005-6-1 11909 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  NY664614  Bromus tectorum See comments 1935-6-15 Lassen Susanville 1310.6 Comment
  CAS-BOT-BC185469  Calamagrostis canadensis Clare B. Hardham 1971-8-22 18406 Lassen Diamond Mountain. 2133 Comment
  RSA128308  Callitriche hermaphroditica P. H. Raven, Otto T. Solbrig 1958-6-17 13260 Lassen Along U.S. Hwy 395, 2.1 miles NE of Standish. Comment
  SEINET8196128  Calochortus coeruleus C. G. Gulling 1905-1 1535 Lassen Big Meadows. Comment
  CHSC67072  Calochortus leichtlinii Willis Ball 1969-6-20 15 Lassen Found approx. 1 mile S. E. of E. L. B. S. about 50 ft. off the dirt road to the station. 1584 Comment
  UC3407  Calochortus leichtlinii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  POM253058  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen Along Highway 36 in the valley east of Fredonyer Pass Comment
  CHSC6271  Calochortus macrocarpus A. Santos 1946-7-5 Lassen East side of Eagle Lake. 1615 Comment
  CAS-BOT-BC483439  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  UC1137569  Calyptridium monospermum A. Simontacchi 1940-6-8 873 Lassen Lassen National Forest, Hall Flat Ranger Station Hall Flat Ranger Station; Lassen National Forest, Hall Flat Ranger Station 1706 Comment
  JEPS17206  Calyptridium umbellatum Frances D. Payne 1929-7-12 101 Lassen Lost Lake, Camp I Lost Lake; Warner Mountains, , Camp I 2286 Comment
  SEINET196249  Calyptridium umbellatum F. Farris 1936-6-15 Lassen Eagle Lake Rd 1676 Comment
  UC1523751  Calyptridium umbellatum G. Schoolcraft 1981-5-5 374 Lassen Ash Valley 1548 Comment
  UC699726  Calyptridium umbellatum Farris Farris 1936-6-15 Lassen Eagle Lake road 1676 Comment
  UC1123631  Calystegia occidentalis subsp. occidentalis A. Simontacchi 1940-6-30 901 Lassen 2.6 mi s Ladder Butte; Halls Flat, Lassen National Forest, Ladder Butte Comment
  CHSC60789  Camassia quamash subsp. breviflora Vernon H. Oswald; Lowell Ahart 1993-6-3 5475 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. 1731 Comment
  CAS-BOT-BC497551  Camassia quamash subsp. breviflora Elmer I. Applegate 1934-5-4 8936 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC497553  Camassia quamash subsp. breviflora L. Beane; A. M. Vollmer 1953-7-1 92 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC497557  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles east of Westwood, In the Arid Transition Life Zone 1463 Comment
  RSA32023  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles south of Westwood 1494 Comment
  UC2027336  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along Highway 395 ca. 6.6 m S of Karlo Road. quadrangle. Comment
  NY661118  Camelina microcarpa G. Schoolcraft 2000-5-24 2896 Lassen Near Ducasse Reservoir south of Termo, CA. 1645.9 Comment
  SBBG70392  Camelina sativa subsp. sativa H. and M. Dearing 1939-6-6 3564 Lassen Bieber Comment
  NY850974  Camissonia boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen About midway between Mapes and Secret Valley on U.S. Highway #395. 1372 Comment
  NY850975  Camissonia boothii subsp. alyssoides Mrs. C. C. Bruce 06 1898 2139 Lassen Shumway Comment
  RSA294814  Camissonia boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  UCR183189  Camissonia boothii subsp. alyssoides Jim Andre, G. L. Clifton 1993-5-28 7710 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  NY851231  Camissonia claviformis var. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale, on Highway 395 Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  POM38767  Camissonia parvula Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  RSA271914  Camissonia pubens Christopher Davidson 1975-6-7 2758 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC107616  Camissonia pubens T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  NY852052  Camissonia subacaulis G. Schoolcraft 1993-6-10 2288 Lassen North of Clark's Valley Road east of Red Rock Lake 1829 Comment
  CAS-BOT-BC160833  Camissonia tanacetifolia subsp. quadriperforata James Jokerst 1983-5-31 1787 Lassen Near Madeline Plains 1583 Comment
  CAS-BOT-BC160864  Camissonia tanacetifolia subsp. tanacetifolia Ella D. Cantelow 1953-6-27 s.n. Lassen Secret Valley Comment
  RSA60365  Camissonia tanacetifolia subsp. tanacetifolia E. K. Balls 1950-5-9 15954 Lassen 0.5 mi. south of Modoc Co. Line, Highway 395 1220 Comment
  JEPS114631  Capsella bursa-pastoris Lowell Ahart, John Dittes 2008-6-22 15033 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  UC1137752  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  UC1924258  Capsella bursa-pastoris Debra Valov 2004-5-31 2004229 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  POM95249  Capsella bursa-pastoris Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC37243  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49213 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC68853  Cardamine breweri Vernon Oswald; Lowell Ahart 1997-6-24 8618 Lassen South of Susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. On the edge of a streamlet entering the impoundment. 2036 Comment
  JEPS95978  Cardaria chalepensis Vernon H. Oswald and L. Ahart 1999-6-9 9749 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  CAS-BOT-BC18286  Carex John Thomas Howell; Gordon H. True 1973-8-1 50228 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. Headwaters of Baxter Creek. 2133 Comment
  JEPS96097  Carex aquatilis var. aquatilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7813 Lassen Bizz Johnson Trail at milepost 6.0 e Devils Corral Trailhead (<trailhead> located off Hwy 36 w of Susanville); Modoc Plateau 1420 Comment
  UC1100437  Carex athrostachya Herbert L. Mason 1947-7-9 13300 Lassen 5 mi E of Bieber Comment
  UC50815  Carex athrostachya J. Burtt Davy Jun 17-24 1897 3298 Lassen Honey Lake Valley, slough near Dr. Witt's Comment
  CHSC77240  Carex aurea G. Schoolcraft 1996-9-5 2553 Lassen N. side of Biz Johnson Trail. 1402 Comment
  UC1748339  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen NW corner of Upper Stephens Meadow (Upper Pine Creek near Stephens Camp); High Cascade Range 1900 Comment
  CHSC68771  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8519 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy. 139. 1682 Comment
  JEPS107438  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS107458  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  SEINET10437847  Carex douglasii B. L. Wilson, P. Zika 2011-8-7 16803 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  UC190412  Carex douglasii M. S. Baker and Frank Nutting 1894-7-5 Lassen Mts. s Dixey Valley Comment
  JEPS118163  Carex geyeri Dean W. Taylor 2009-5-20 20601 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
Read comments
May 18 2013
  HSC103621  Carex heteroneura Thomas W. Nelson, Jane Nelson 1985-8-10 8024 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  UC190415  Carex hoodii M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  UC1133501  Carex integra A. Simontacchi 1940-5-14 720 Lassen 4.1 mi wnw Aspen Well; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC35781  Carex jonesii J. T. Howell 1934-6-14 12164 A Lassen Warner Mts.; near Lost Lake 2438 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 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
  HSC95300  Carex limosa Gordon Leppig, J. Cromwell 1997-7-27 610 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC31697  Carex mariposana John Thomas Howell; Gordon H. True 1973-7-31 50045 Lassen On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  UC2046020  Carex multicostata Nick Otting and Bruce Newhouse 2003-7-15 706 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 air miles south-southwest of Susanville. Comment
  CHSC110970  Carex nebrascensis Lowell Ahart; John Dittes 2012-7-9 18298 Lassen Scattered along a small drainage, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northest of Bieber, Big Valley. 1267 Comment
  CHSC99512  Carex nebrascensis Lowell Ahart; John Dittes 2008-6-20 14953 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS120112  Carex nebrascensis Lowell Ahart, John Dittes 2012-7-9 18298 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  HSC103614  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8005 Lassen Along north side of Silver Lake 1829 Comment
  UC2031879  Carex pachystachya Nick Otting and Dick Brainerd 2003-7-17 700 Lassen Cascade Mountains, Susan River, 4 air miles west of Susanville. Comment
  CAS-BOT-BC119043  Carex pellita George Wilson Gillett 1957-7-26 906 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CHSC66270  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-24 7892 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the southern-most spring on the E side of the meadow 1633 Comment
  SEINET7570891 Image available Carex pellita L. P. Janeway 2003-7-24 7919 Lassen Swain Mountain 7.5' quad. High Cascade Range. Below Forest Service Road 30N14 1.1 km from Road 30N21, small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  UC1133448  Carex petasata Robert W. Gardner 1939-6-28 G- 32 Lassen Burgess Spring Experimental Range, Halls Flat Quadrangle Burgess Spring Experimental Range Comment
  CHSC77250  Carex praegracilis G. Schoolcraft 1995-5-23 2487 Lassen Three Springs. 1554 Comment
  CHSC91379  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11864 Lassen On the west side of a 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
  CHSC118476  Carex praegracilis Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. Sandy Beach of Eagle Lake, ~1.6 air miles north of Spalding marina. 1559 Comment
  CAS-BOT-BC118027  Carex rossii John Thomas Howell; Gordon H. True 1973-8-1 s.n. Lassen Headwater of Baxter Creek, Diamond Mts. 2164 Comment
  CHSC53538  Carex rossii L. P. Janeway; Gary Benson, Randy Harrison 1984-8-23 1057 B Lassen On southwest side of Blue Lake. 1889 Comment
  HSC48222  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19175 Lassen Harvey Valley near Cone Springs Comment
  HSC48338  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19244 Lassen 2 mi. N of Westwood Comment
  CHSC74312  Carex simulata James D. Jokerst 1991-5-28 3297 Lassen Survey for reroute of Hwy. 139 at the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. Modoc Plateau. 1554 Comment
  HSC95225  Carex simulata Gordon Leppig 1998-8-17 1044 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC116615  Carex subfusca Hans Leschke 1960-8-8 1738 Lassen Below trail Ski Hut-Crumbaugh Lake. 1981 Comment
  CHSC77246  Carex subfusca G. Schoolcraft 1998-7-7 2754 Lassen Along Pine Creek NE of Fredonyer Peak. 1645 Comment
  CHSC77248  Carex subfusca G. Schoolcraft 1997-7-9 2608 Lassen S of Doyle Corral. 1706 Comment
  CHSC89751  Carex subfusca L. P. Janeway 2004-6-26 8169 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. Roadside ditch. 1790 Comment
  CAS-BOT-BC115284  Carex utriculata George Wilson Gillett 1957-7-22 885 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. Comment
  CHSC76792  Carex utriculata L. P. Janeway 1999-9-5 6580 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  HSC103651  Carex utriculata Thomas W. Nelson, Jane Nelson 1985-8-10 8009 Lassen Along north side of Silver Lake 1829 Comment
  HSC95286  Carex vesicaria Gordon Leppig 1998-8-17 1039 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC103677  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8029 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  RSA220022  Carex whitneyi Beecher Crampton 1964-6-26 s.n. Lassen Ca. 4 miles SSE Bogard Ranger Station, Lassen National Forest. Comment
  CAS-BOT-BC248970  Castilleja Philip A. Munz 1947-5-19 11866 Lassen 27.7 miles south of Ravendale, on Highway 395 1310 Comment
  CAS-BOT-BC248972  Castilleja Margaret M. Hanna 1956-6-3 942 Lassen 2 mi. west of Nubieber, Hiway 299 Comment
  JEPS62334  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen ca 6 mi n Honey Lake 1280 Comment
  JEPS81474  Castilleja angustifolia M. S. Taylor 1982-5-29 4568 Lassen ca 0.5 mi n dirt road paralleling Hwy. 395 jct. with Scott Rd. (ca 20 mi n of Reno) Comment
  JEPS94129  Castilleja angustifolia Vernon H. Oswald and Lowell Ahart 1998-5-22 9108 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
  UC585181  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1759 Lassen e of Red Rock (nw side of summit of ridge) 1828 Comment
  HSC20562  Castilleja angustifolia M. L. Stuart 1965-5-2 56 Lassen 2 mi. N of Termo. on Hwy. 395 1829 Comment
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  UC1483848  Castilleja applegatei G. Schoolcraft 1979-7-5 123 Lassen se of Observation Mountain Lookout (top of Observation Mountain); Observation Mountain 2407 Comment
  JEPS76164  Castilleja applegatei subsp. pallida T. I. Chuang with Fei-Mei Chuang 1977-7-25 7659 Lassen 7.1 mi W of Madeline (on road to Adin) Comment
  CHSC30598  Castilleja applegatei subsp. pinetorum Marc Held 1972-6-29 19 Lassen 3 miles from Dean's Meadow, towards 5 points, off road side. Comment
  HSC23468  Castilleja applegatei subsp. pinetorum John Pratt 1970-6-21 29 Lassen 1738 Comment
  JEPS117583  Castilleja applegatei subsp. pinetorum Lowell Ahart, John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  JEPS17616  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with G. T. Robbins 1955-7-20 5411 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley); Warner Mountains, Modoc National Forest, Long Valley Meadow 2057 Comment
  JEPS85742  Castilleja applegatei subsp. pinetorum Roy E. Buck and Robert A. Price 1988-6-26 1030 Lassen ca 0.5 air mi n Fredonyer Peak main summit (on subsidiary peak, ca 30 air mi nne of Susanville); Fredonyer Peak 2377 Comment
  UC1063044  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1924599  Castilleja applegatei subsp. pinetorum Debra Valov 2006-5-28 2006009 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1291 Comment
  UC506917  Castilleja applegatei subsp. pinetorum George A. Fischer, Irwin H. Johnson 1933-7-14 F- 259 Lassen Lassen Forest 1783 Comment
  CHSC68874  Castilleja arachnoidea Vernon Oswald; Lowell Ahart 1997-6-24 8642 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
  JEPS17631  Castilleja arachnoidea Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5409 Lassen 4.4 mi s Patterson Ranger Station (on e edge of Long Valley Meadow, s tip of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS23848  Castilleja campestris subsp. campestris Peter H. Raven and Otto T. Solbrig 1959-6-17 13295 Lassen 4.8 mi s Madeline (along U.S. Hwy 395) Comment
  JEPS3595  Castilleja campestris subsp. campestris Helen-Mar Wheeler 1952-7-11 Lassen s of Madeline Comment
  JEPS66447  Castilleja campestris subsp. campestris L. R. Heckard and P. Rubtzoff 1971-8-4 2708 Lassen about 10 mi n Termo (along U.S. Hwy 395) 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
  HSC20530  Castilleja linariifolia M. T. Milligan 1964-8-6 208 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  HSC63893  Castilleja linariifolia Teresa Prendusi 1980-7-1 Lassen McCoy Flat, 5 mi. E of northern tip of Eagle Lake 1646 Comment
  UC1523790  Castilleja miniata Gary Schoolcraft Aug 1979 Lassen Goodrich Meadow 1554 Comment
  CAS-BOT-BC244894  Castilleja miniata W. C. McCalla 1940-6-21 6284 Lassen Little valley along Hy. 36, west of Susanville Comment
  CHSC5901  Castilleja miniata subsp. miniata R. Gein 1946-6-22 Lassen Webb's Camp, Eagle lake. 1557 Comment
  CHSC37346  Castilleja pilosa Jenifer Estep 1978-6-27 17 Lassen SE of Eagle L. at Mahogany L. Comment
  JEPS3805  Castilleja pilosa G. S. Crew and C. S. Robinson 1927-6-25 35 Lassen near Westwood Jct. (sw Lassen County); Norval Flat 1747 Comment
  JEPS76162  Castilleja pilosa T. I. Chuang with Fei-Mei Chuang 1977-7-25 7661 Lassen 17.6 mi w Madeline 1600 Comment
  JEPS80677  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5529 Lassen about 0.5 mi e Nubieber 1249 Comment
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC241004  Castilleja pilosa E. K. Balls 1950-5-19 14 .778 Lassen 17.5 mi. W. of Madeline on rd. from Adin 1676 Comment
  CHSC112415  Castilleja tenuis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18773 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC66263  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1996-6-24 7841 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  RSA0035396  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-20 14944 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
  UC1063260  Castilleja tenuis A. Simontacchi 1940-6-5 812 Lassen 3.9 mi nw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1609352  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1993-6-14 5524 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd (Lassen A1) at Sandy Beach on the w shore of Eagle Lake, between the road and the lake); Eagle Lake 1566 Comment
  CDA7137  Castilleja tenuis G. Schoolcraft 1993-6-29 s.n. Lassen Ash Valley RNA 16 miles E of Adin, CA Comment
  JEPS103212  Castilleja tenuis G. Schoolcraft 1993-6-29 2314 Lassen Ash Valley RNA 16 miles east of Adin, CA 1554 Comment
  CAS-BOT-BC39555  Caulanthus major T. Prendusi 1980-7-21 30 Lassen Fredonyer Peak. 2377 Comment
  CAS-BOT-BC48532  Ceanothus cordulatus Brighton C. Cain 1925-8-24 97 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  CAS-BOT-BC52056  Ceanothus prostratus C. H. M. 1907-9-15 s.n. Lassen Eldridge's Ranch, East of Hat Creek (N. of Lassen Peak on road from Fall River Mills to Susanville) Comment
  CHSC7727  Ceanothus prostratus Beverly J. Wise 1969-4-21 90 Lassen Approx. 2 mi. past Susanville old dump on old dump road. 1341 Comment
  HSC42297  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen 4.5 mi W of Bieber along Hwy. 299 Comment
  JEPS103176  Ceanothus prostratus G. Schoolcraft 2000-4-25 2890 Lassen 3.5 mi N of Susanville along Hwy 139 1402 Comment
  UC1281294  Ceanothus prostratus H. E. McMinn 1941-8-27 5400 Lassen 3.5 mi from Pine Cone Inn (5 mi from Newbieber [Neubieber?]); 5 mi from Neubeiber Comment
  HSC99160  Ceanothus prostratus Paul J. CaraDonna 2009-5-17 133 Lassen Vista Point, S of highway, 0.25 mi. S of mile marker 58 1524 Comment
  UCSB62941  Ceanothus velutinus Sarr, Dan 1995-7-29 Lassen N-side of Eagle Pass, 1 mi. below the summit 1900 Comment
  CAS-BOT-BC52440  Ceanothus velutinus var. velutinus Brighton C. Cain 1925-8-24 115 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  CDA1996  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen 1 mi. W of Johnstonville, on N side of old road to Susanville. (A27 ? Johnstonville Rd. N of Center Rd.) 0 Comment
  JEPS78140  Centaurea virgata subsp. squarrosa Sally Levingson 1972-7-19 99 Lassen 2 mi east of Beiber on Highway A2 beside the road. 975 Comment
  UC1042560  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 Lassen Cramer Ranch Big Valley Comment
  RSA97606  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley Comment
  UCD130124  Centaurea virgata subsp. squarrosa Dan Marcum 1980-8-24 s.n. Lassen Big Valley. Comment
  CHSC29883  Cerastium fontanum subsp. vulgare Robin L. Ondricek 1978-7-15 101 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  CAS-BOT-BC388199  Cerastium fontanum subsp. vulgare John Thomas Howell 1976-7-19 51990 Lassen On Gold Run Creek southwest of Susanville 1386 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
  JEPS126504  Cercocarpus ledifolius var. intermontanus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-22 CA 350 -77 Lassen Take Horse Lake road and drive north of Horse Lake to the unnamed 6500 ft peak with a metal rod on top. Comment
  CHSC42210  Cercocarpus ledifolius var. ledifolius C. E. Iaver 1985-7-20 Lassen Ca. 8 mi se of Hayden Hill and 1 mi nw of Said Valley Reservoir. 1584 Comment
  CAS-BOT-BC276616  Chaenactis douglasii var. douglasii John Thomas Howell 1955-7-19 30813 Lassen E side of Beckwourth Pass 1493 Comment
  CHSC111255  Chaenactis douglasii var. douglasii L. P. Janeway; B. Castro 2012-7-3 10938 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
  CAS-BOT-BC276621  Chaenactis douglasii var. douglasii Gary Schoolcraft 1982-7-6 766 Lassen Fort Sage Mountains, near Jesus Spring 1950 Comment
  UC31043  Chaenactis xantiana J. Burtt Davy Jun 17 1897-Jun 24 1897 3411 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC141744  Chamaebatiaria millefolium John Thomas Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  CHSC4937  Chamaebatiaria millefolium W. Lessig 1967-7-15 30 Lassen 1/8 mi se of Eagle Lake Biology Station. 1554 Comment
  UC26091  Chamaesaracha nana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC63927  Chamaesaracha nana Teresa Prendusi 1980-5-30 1109 Lassen Mapes Spring, 11 mi. W of 395 and 19 mi. S Ravendale, near spring outflow 1585 Comment
  CHSC65310  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1995-8-14 7178 Lassen Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  RSA0045636  Chamomilla suaveolens Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife, Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  CAS-BOT-BC426342  Chenopodium John Thomas Howell 1975-7-23 51389 Lassen Susanville, south edge of town on highway to Janesville 1295 Comment
  CHSC112973  Chenopodium album Lowell Ahart; John Dittes 2013-7-22 18859 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC76275  Chenopodium album Lowell Ahart; Vernon H. Oswald 1999-9-13 8222 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
  JEPS95909  Chenopodium album Lowell Ahart 1999-9-13 8222 Lassen about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  POM312473  Chenopodium chenopodioides Verne Grant, Irving Schneider 1947-9-5 8368 Lassen NW shore of Eagle Lake, by Sam Webb s place (Spaulding). Comment
  CAS-BOT-BC460932  Chenopodium hians John Thomas Howell 1934-7-8 12499 Lassen Spalding's, Eagle Lake Comment
  JEPS87185  Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake on the S side of Hwy 44 between Oldo Station and Susanville, 1.2 mi SE of County Road A21. 1745 Comment
  CAS-BOT-BC426337  Chenopodium nitens John Thomas Howell 1934-7-10 12543 Lassen Patterson Flats Comment
  CAS-BOT-BC451355  Chimaphila menziesii Clare B. Hardham 1971-8-22 18388 Lassen Diamond Mountain: North slopes 2133 Comment
  CAS-BOT-BC39672  Chorispora tenella Gary Schoolcraft 1982-3-24 624 Lassen Lower end of Amedee Canyon. 1280 Comment
  CHSC64884  Chorizanthe watsonii Vernon H. Oswald; Lowell Ahart 1995-6-19 6891 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. In small openings between brush on a slope on the n side of the road. 1383 Comment
  POM105904  Chorizanthe watsonii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  CAS-BOT-BC36276  Chrysolepis sempervirens Cain C. Brighton 1925-8-24 95 Lassen Mt. Lassen Volcanic National Park, 1 mi below Drakesbad 1645 Comment
  RSA755658  Chrysopsis villosa var. hispida Barbara Ertter 1987-7-24 7302 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  CDA46  Chrysothamnus albidus O. W. Newman Aug 1915 s.n. Lassen Susanville. Comment
  CAS-BOT-BC140659  Chrysothamnus humilis John Thomas Howell 1974-7-9 50485 Lassen SW of Wildcat Point, Eagle Lake 1554 Comment
  UC773961  Chrysothamnus humilis L. R. Short and J. Warren 1936-8-17 S- 495 Lassen Burgess Spring Experiment Range Lassen Forest 1760 Comment
  SEINET7450943 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus M. J. Williams 1974-7-29 1974 -L-56 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  UC1602277  Chylismia claviformis subsp. cruciformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3399 Lassen Amedee Honey Lake Valley Comment
  CHSC5034  Cichorium intybus L. B. Barlow 1967-7-6 108 Lassen 2 mi. west Murrer's Ranch turn off, 14.9 mi. north of Susanville, Calif., Highway 139. 1463 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
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  CHSC115576  Cirsium Lowell Ahart; John Dittes, Joe DiSalvo 2015-7-14 20322 Lassen On the south side of the levee road, about 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1260 Comment
  CAS-BOT-BC277935  Cirsium canovirens T. C. Fuller 1959-7-7 2739 Lassen Hwy. 395, 6 miles north of the road to Karlo Comment
  CHSC75452  Cirsium cymosum Vernon H. Oswald 1999-6-9 9740 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. Along the road. 1356 Comment
  CAS-BOT-BC278005  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, on highway 299 Comment
  JEPS30611  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  CDA1257  Cirsium inamoenum T. C. Fuller 1959-7-7 2739 Lassen Rocky hillside by Hwy 395, 6 mi N/ road to Karlo. Comment
  SEINET2050011 Image available Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  CAS-BOT-BC280439  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 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
  CDA37712  Cirsium ochrocentrum Breckenridge/Filippini 2007-6-13 s.n. Lassen Madeline Plains, western edge, along Westside Road, old Basque homestead. 0 Comment
  CDA1520  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1522  Cirsium ochrocentrum var. ochrocentrum Lee Wheeler, T. C. Fuller 1518-58 1958-11-12 s.n. Lassen Honey Lake M. Mallery (Mallory) ranch, Susanville. (4 mi SE of Susanville). 0 Comment
  UC1119211  Cirsium scariosum var. americanum A. Simontacchi 1940-6-3 794 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  OBI54125  Cirsium scariosum var. americanum David J. Keil, Kathleen Keil 1992-7-25 23609 Lassen Along Hwy 36, 9.1 mi E of Plumas County line, W of Susanville Comment
  CAS-BOT-BC285731  Cirsium vulgare Margaret Williams 1974-7-27 74 -L-63 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC233917  Cistanthe umbellata G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley RNA 1554 Comment
  UC1137738  Clarkia rhomboidea George A. Fischer, Irwin H. Johnson 1933-7-14 F 246 Lassen Lassen National Forest 1767 Comment
  RSA122141  Clarkia stellata L. R. Short 1936-6-23 S- 448 Lassen Burgess Spring Exp. Range, Lassen forest 1799 Comment
  SEINET5336402  Claytonia perfoliata subsp. intermontana J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin CA. Comment
  JEPS107399  Claytonia rubra subsp. depressa Lowell Ahart, John Dittes 2005-6-1 11882 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
  CHSC108022  Claytonia rubra subsp. rubra Lowell Ahart; John Dittes 2011-6-20 17486 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS118455  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2011-6-20 17486 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS126532  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC1136746  Claytonia rubra subsp. rubra A. Simontacchi 1940-5-21 758 Lassen 4.1 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  SBBG12321  Claytonia rubra subsp. rubra A. I. Richardson 1961-5-30 6 Lassen rd S of Eagle Lake 1402 Comment
  JEPS79144  Cleome platycarpa L. R. Heckard with R. Bacigalupi 1980-6-11 5248 Lassen 11.3 mi. n. Litchfield (along U.S. 395, s. of Deep Creek crossing) 1463 Comment
  NY242101  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi. N. Wendel Rd. along Skedaddle Ranch Rd. 1463.0 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
  UC1587089  Cleomella parviflora G. Schoolcraft 1991-7-22 2178 Lassen s of Smoke Creek Road (just w of CA/NV line) 1341 Comment
  NY242228  Cleomella plocasperma A. Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 Comment
  CAS-BOT-BC423222  Cleomella plocasperma Luella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  CHSC116917  Collinsia parviflora J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CHSC99505  Collinsia parviflora Lowell Ahart; John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS11714  Collinsia parviflora F. W. Pennell 1940-6-9 25752 Lassen 7 mi n Madeline (along Rte 395) 1615 Comment
  SEINET10931315  Collinsia parviflora Katherine L. Morris 1973-5-25 Morris 240 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
  SEINET10548304  Collinsia sparsiflora Mary Susan Taylor 1982-5-7 Taylor 4427 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  HSC75889  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19259 Lassen Harvey Valley near Cone Springs Comment
  RSA128300  Collinsia torreyi Peter H. Raven, Otto T. Solbrig 1958-6-16 13249 Lassen 4.5 miles east of Westwood on Hwy 36. Comment
  JEPS21731  Collinsia torreyi var. torreyi L. R. Short 1936-6-25 S- 455 Lassen Burgess Spr. Exp. Range; Lassen Forest 1752 Comment
  CHSC23513  Collomia grandiflora Wayne O. Baum 1971-7-19 71 -77 Lassen E. slope of Gallatin Peak. 2042 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
  HSC16917  Collomia grandiflora Jim Vaughn 1956-7-25 Lassen Drakesbad 1738 Comment
  SJSU11426  Collomia grandiflora V. Hardham 1965-7-12 130 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139 1524 Comment
  CHSC60835  Collomia tinctoria Vernon H. Oswald; Lowell Ahart 1993-6-28 5597 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, between Grays Valley and Harvey Valley, E of Poison Lake. Along the edge of the road. 1734 Comment
  CHSC6199  Collomia tinctoria J. B. Kimsey 1946-6-13 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  CHSC92760  Collomia tinctoria L. P. Janeway 2005-7-4 8468 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC1123659  Collomia tinctoria A. Simontacchi 898 Lassen 2.6 mi s Ladder Butte; Lassen National Forest, Halls Flat Quadrangle Comment
  UC773938  Collomia tinctoria L. R. Short and J. Warren 1936-6-10 S- 382 Lassen Burgess Spring Experimental Range Lassen <National> Forest (timbered slopes) 1789 Comment
Read comments
Jun 17 2011
  CHSC112977  Conium maculatum Lowell Ahart; John Dittes 2013-7-23 18901 Lassen West side of the road levee, about 80 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC6282  Convolvulus arvensis D. L. Stites 1967-7-1 141 Lassen 10 mi se of Eagle Lake Biology Station on Lower Murrer's Meadow. 1371 Comment
  CAS-BOT-BC286116  Conyza canadensis John Thomas Howell 1974-7-8 50503 Lassen Susanville 1295 Comment
  UC1483856  Corallorhiza maculata G. Schoolcraft 1980-7-15 308 Lassen w Bieber; Big Valley Mountain timber sale area (Bureau of Land Managem 1798 Comment
  CHSC76102  Cordylanthus maritimus subsp. canescens Lowell Ahart; Vernon H. Oswald 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
  JEPS57534  Cordylanthus maritimus subsp. canescens Harry George 1963-8-15 Lassen shores of Honey Lake Comment
  CHSC77234  Cordylanthus ramosus G. Schoolcraft 1999-8-10 2873 Lassen S. of Doyle Grade about 2.5 mi. w. of Doyle, CA. 1584 Comment
  UC762620  Cordylanthus ramosus R. F. Hoover 1940-10-5 4678 Lassen Secret Valley Comment
  JEPS107790  Crepis acuminata Lowell Ahart, John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  CAS-BOT-BC290394  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2314 Lassen Black Mountain about a mile below the summit 1940 Comment
  CHSC36849  Crepis bakeri M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno. Comment
  OBI75880  Crepis bakeri Anthony Baniaga 2011-6-30 404 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1470 Comment
  JEPS107848  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
  POM230908  Crepis intermedia G. Ledyard Stebbins, J. A. Jenkins 1937-7-10 2296 Lassen Crest of range head of Stony Ridge, west of Milford 1951 Comment
  UC581218  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2347 Lassen Quartz Mine Willow Creek 1524 Comment
  SJSU8354  Crepis intermedia W. Savage 1971-7-20 725 Lassen c. 2 mi N of Milford near W side Honey Lake 1264 Comment
  CAS-BOT-BC291572  Crepis modocensis subsp. modocensis G. L. Stebbins; J. A. Jenkins 1937-7-10 2277 Lassen Diamond Mt. 2286 Comment
  JEPS36426  Crepis monticola W. L. Jepson 1910-6-10 4108 Lassen King Creek 1524 Comment
  UC91877  Crepis monticola T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC581194  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2303 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC581195  Crepis occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1749 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UC581290  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2302 Lassen w Milford (crest or range head of ridge); Stony Ridge 1930 Comment
  UC581276  Crepis occidentalis subsp. occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2320 Lassen w-facing slope about 1 mi below summit; Black Mt. 1940 Comment
  UC581289  Crepis occidentalis subsp. occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1748 Lassen nw-facing slope of ridge e Red Rock 1600 Comment
  CAS-BOT-BC290824  Crepis occidentalis subsp. pumila David D. Keck; J. Clausen 1935-6-25 3759 Lassen Susanville 1340 Comment
  CDA4443  Crepis occidentalis subsp. pumila E. E. Fix 1956-6-18 Lassen Termo. 0 Comment
  RSA647827  Cryptantha Marion P. Harthill 1971-6-20 206 Lassen 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
  CHSC25315  Cryptantha circumscissa Pauleen Broyles 1977-4-1 168 Lassen Roadway along Skedaddle Creek ca 8 km ene of Herlong. 1350 Comment
  CHSC4899  Cryptantha circumscissa Bill Wilson 1967-7-8 19 Lassen Eagle Lake Biological Station, 10 mi. N of Susanville; 200 yds. S of station. 1584 Comment
  CHSC5035  Cryptantha circumscissa L. B. Barlow 1967-7-12 110 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC7765  Cryptantha circumscissa Beverly J. Wise 1969-5-18 77 Lassen 17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  UCD54568  Cryptantha circumscissa Ellen Dean; Dawn Cunningham 2005-10-25 2751 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  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
  SEINET201635  Cryptantha humilis Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8465 Lassen 50 miles southeast of Susanville Comment
  SJSU5810  Cryptantha intermedia J. W. Tilden 1958-6-27 1294 Lassen Madeline Comment
  UC78722  Cryptantha intermedia T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CHSC92722  Cryptantha torreyana L. P. Janeway 2005-7-3 8449 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  RSA123892  Cryptantha torreyana G. A. Fischer, I. Johnson 1933-7-12 F- 222 Lassen Near Sheep bedground. 1723 Comment
  SDSU20527  Cryptantha torreyana var. torreyana Nuri Benet-Pierce, John P. Pierce 2012-7-14 529 Lassen Diamond Mountain 2054 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
  POM197158  Cryptogramma acrostichoides Anonymous 1881-07 s.n. Lassen Mount Lassen Comment
  CAS-BOT-BC39681  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale. 1737 Comment
  CHSC59701  Cusickiella douglasii Mary Meyer 1980-7-15 Lassen 1546 Comment
  NY704022  Cusickiella douglasii N. H. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale 1700 Comment
  UC1541364  Cycladenia humilis var. humilis H. E. and S. T. Parks 1928-6-20 Lassen Mt. Lassen, Drakesbad 2133 Comment
  POM369283  Cynoglossum occidentale Anstruther Davidson s.n. Lassen Summit- Eagle Lake 1829 Comment
  RSA324194  Dalea ornata A. Tiehm, Raymond Evans, James Young 1984-6-7 8592 Lassen Flats n the northwest side of Shaffer Mountain. 7.5 airmiles NNW of Litchfield. 1372 Comment
  UC1522132  Dalea ornata Arnold Tiehm, Raymond Evans, and James Young 1984-6-7 8592 Lassen 7.5 air mi. n.-n.w. of Litchfield (n.w. side of Shaffe Mt.); Shaffe Mt. 1371 Comment
  HSC30066  Damasonium californicum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19182 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC445515  Damasonium californicum M. S. Taylor 1982-6-12 4647 Lassen On n side of Susan River (West Fork), s side of hwy 36, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  HSC63944  Damasonium californicum Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  CAS-BOT-BC189863  Danthonia californica John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC53341  Danthonia californica M. S. Baker and Frank Nutting 1894-7-2 Lassen Pine Creek Comment
  CHSC66420  Danthonia unispicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7803 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  HSC69064  Danthonia unispicata Gary Schoolcraft 1980-7-28 332 Lassen Meadow E of Tule Mountain. 2043 Comment
  CHSC48859  Dasiphora fruticosa Vernon Oswald 1986-8-7 2270 Lassen Hwy 36, 12.6 mi e of the Lassen-Plumas County line, 0.8 mi e of Fredonyer Pass. Roadcut. 1706 Comment
  JEPS28461  Delphinium George W. Gillett 1957-7-21 864 Lassen Juniper Lake-Cameron Meadow trail 300 yd n trail summit; Lassen Volcanic National Park 2118 Comment
  JEPS79213  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CHSC71132  Delphinium andersonii Vernon H. Oswald; Lowell Ahart 1998-5-22 9125 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  CHSC7730  Delphinium andersonii Beverley J. Wise 1969-5-18 83 Lassen 7.7 mi. West of Susanville on Las. Co. Rd. 215 on the south side of the road. 1341 Comment
  CHSC93658  Delphinium andersonii Lowell Ahart; John Dittes 2005-6-2 11995 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  JEPS94118  Delphinium andersonii Vernon H. Oswald and Lowell Ahart 1998-5-22 9125 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts., 2.2 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  UC1924575  Delphinium andersonii Debra Valov 2006-5-29 2006026 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1275 Comment
  UCR244044  Delphinium andersonii Jim Andre 1993-6-1 19714 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  UCD95650  Delphinium andersonii James D. Jokerst 1983-5-30 1794 Lassen Ca.1.5 mi. N of Eagle Lake, ca. 50 m W of Hwy. 139, ca. 1.0 I N of Eagle Lake Rd. Comment
  CAS-BOT-BC26673  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen one mile east of Fredonyer Pass on Highway #36, Arid Transition Life Zone 1706 Comment
  CAS-BOT-BC33220  Delphinium armeniacum Amos Arthur Heller 1938-6-4 15149 Lassen 1 mile E of Fredonyer Pass. 1706 Comment
  RSA0005299  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CHSC7728  Delphinium nudicaule Beverley J. Wise 1969-5-9 84 Lassen 11.3 mi. west of Susanville on Forest Serv. 8246 off Hwy 36. 1524 Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  CAS-BOT-BC9943  Delphinium nudicaule H. D. Ripley; R. C. Barneby 1943-6-14 5128 Lassen Fredonyer Pass 1706 Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  POM100692  Delphinium nuttallianum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC1584004  Delphinium nuttallianum G. Schoolcraft 1990-5-15 2051 Lassen about 4 mi s Nubieber; John's Valley area 1310 Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  CAS-BOT-BC194257  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-9 12517 Lassen Bridges Creek Spring 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
  POM114825  Deschampsia cespitosa subsp. cespitosa Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1037258  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1933-8-2 106 Lassen ca. 8 mi. n.w. Eagle lake (Slate Creek, Lassen Nat'l Forest); Lassen Nat'l Forest, Slate Creek 1920 Comment
  UC188776  Deschampsia cespitosa subsp. cespitosa Milo S. Baker July 1894 Lassen Eagle Lake Comment
  CHSC112783  Deschampsia danthonioides Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18754 Lassen Drainage filled with dirt from the construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC91297  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
  CHSC99495  Deschampsia danthonioides Lowell Ahart; John Dittes 2008-6-20 14926 Lassen 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
  UC1483828  Deschampsia danthonioides G. Schoolcraft 1980-7-28 331 Lassen meadow area e. of Tule Mt. 2042 Comment
  UC1924585  Deschampsia danthonioides Debra Valov 2006-5-28 2006015 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  UCD61402  Deschampsia danthonioides L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  CAS-BOT-BC192746  Deschampsia danthonioides Clarence R. Quick 1962-6-17 62 25 A Lassen Swains Hole, a manmade pond in sagebrush flat south of Blacks Experimental Station 1554 Comment
  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
  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
  UC1143009  Descurainia richardsonii August L. Hormay 1934-5-11 Lassen 2.5 mi nw Hall's Flat; Lassen National Forest 1676 Comment
  CAS-BOT-BC43487  Descurainia sophia John Thomas Howell 1975-7-23 51400 Lassen Sierra Nevada. Susanville. 1295 Comment
  NY694154  Descurainia sophia G. Schoolcraft 1993-5-25 2268 Lassen North and South of Smoke Creek Road 1463 Comment
  UCD114789  Descurainia sophia R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  SD8289  Dicentra formosa Mrs. R. M. Austin Aug 1882 Lassen Comment
  HSC63945  Dieteria canescens var. canescens Teresa Prendusi 1980-7-1 Lassen Little Antelope Valley 1677 Comment
  UC1523714  Dieteria canescens var. canescens Gary Schoolcraft 1981-7-21 542 Lassen 1524 Comment
  CHSC86974  Dieteria canescens var. shastensis L. P. Janeway 2001-6-20 7202 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
  UC1136762  Dieteria canescens var. shastensis L. R. Short 1936-6-25 S- 427 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  HSC103593  Dieteria canescens var. shastensis Thomas W. Nelson, Jane Nelson 1986-6-23 8140 Lassen Along State Route 44, 10.9 mi. SE of Old Station junction. 1585 Comment
  SFV18616  Dieteria canescens var. shastensis T. W. Nelson, J. P. Nelson 1990-7-14 8773 Lassen Bogard rest area. 1730 Comment
  CAS-BOT-BC153671  Diplacus mephiticus G. Schoolcraft 1989-6-17 1909 Lassen Northwest slope of Shaffer Mtn. Comment
  CAS-BOT-BC153673  Diplacus mephiticus Clare B. Hardham s.n. Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC153678  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CAS-BOT-BC153681  Diplacus mephiticus L. G. Bennett 1967-6-23 21 Lassen Eagle Lake Biological Station Grounds 1554 Comment
  CAS-BOT-BC153683  Diplacus mephiticus Mike Vasey 1990-6-30 9050 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CHSC25121  Diplacus mephiticus William R. Lessig 1967-6-24 6 Lassen Collected ca. 200 yds. N. E. of Eagle Lake Biological Station. 1524 Comment
  SEINET13703366  Diplacus mephiticus F. B. Headley 1915-5-28 13 Lassen Honey Lake. Comment
  CAS-BOT-BC208724  Distichlis spicata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16339 Lassen On dam forming reservoir north of road 13.5 mi. E of Susanville Comment
  CHSC7693  Distichlis spicata Beverley J. Wise 1969-5-23 129 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd 320. 1249 Comment
  UCD64451  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock. 1341 Comment
  POM76750  Dodecatheon alpinum subsp. majus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1553397  Dodecatheon conjugens G. Schoolcraft 1988-4-25 1783 Lassen Ash Valley RNA/ACEC 16 mi e Adin; Ash Valley RNA/ACEC e of Adin 1554 Comment
  UC1951073  Dodecatheon conjugens Debra Valov 2009-4-25 2009018 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC23459  Downingia K. R. Stern 1973-4-18 5853 Lassen Drying vernal pool area, ca. 0.2 mi n of Hwy 44 on Pittsville Rd. Comment
  CHSC60886  Downingia bacigalupii Vernon H. Owald; Lowell Ahart 1993-7-8 5677 Lassen N. side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 Comment
  RSA340002  Downingia bacigalupii Noel Holmgren, Patricia K. Holmgren 1980-7-3 9482 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UC1024290  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (adjacent to State Highway 299); Lassen National Forest Comment
  UC1609311  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1993-7-8 5677 Lassen ca 11 air mi nnw Poison Lake (n side of Rd 34N12, just e of the railroad at Halls Flat Well) 1737 Comment
  UC2047850  Downingia bacigalupii Debra Valov 2016-6-21 1296 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; 100 m up private driveway; in dry vernal pool/ditch. Comment
  UCR119111  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Modoc Plateau, 5 miles west of Susanville. 1448 Comment
  SEINET12329644  Downingia bacigalupii N. H. Holmgren, Holmgren, P. K. 1980-1 9472 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) W of US Highway 395 from a turnoff 10.3 km 1615 Comment
  CHSC30606  Downingia bicornuta T. M. Lane 1975-6-23 28 Lassen 50 m n of spring headwaters of Willow Cr; 3.2 km ese of Eagle Lake Field Station; 22.4 km n of Susanville. 1589 Comment
  CHSC59527  Downingia bicornuta Mary Meyer 1980-7-9 506 Lassen Horse Camp Springs, down-stream in cow pod. 1706 Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  JEPS14500  Downingia bicornuta var. bicornuta Joseph Grinnell 1928-6-26 Lassen Poison Lake 1737 Comment
  JEPS58978  Downingia bicornuta var. bicornuta Wm. Anderson 1960-6-16 Lassen 0.25 mi s Mapes Ranch; Honey Lake Valley Comment
  UC1609203  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen 1.9 mi n Highway 44 (Pittville Rd (Lassen 111, 36N01), se edge of Poison Lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  UC890609  Downingia bicornuta var. bicornuta Elmer I. Applegate 1929-6-24 5883 Lassen just n Bieber (nw corner of Lassen County) Comment
  JEPS108502  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 221 -95 Lassen E edge of Poison Lake. N on Pittville Rd. off of Rt. 44. E of Shasta/Lassen county line. Comment
  CHSC60888  Downingia cuspidata Vernon H. Oswald; Lowell Ahart 1993-7-8 5647 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  UC1609096  Downingia cuspidata Vernon H. Oswald and Lowell Ahart 1993-7-8 5647 Lassen 0.4 mi n Hwy. 44 (Pittville Rd (Lassen 111, 36N01) near its intersection with 33N11, near se end of Poison Lake) 1709 Comment
  JEPS23858  Downingia insignis Peter H. Raven 1958-6-17 13282 Lassen 1.9 mi s Ravendale (along U.S. Highway 295) Comment
  SJSU3174  Downingia insignis J. W. Tilden 1958-6-27 1290 Lassen Madeline 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
  CAS-BOT-BC266471  Downingia laeta Wm. Anderson 1960-6-16 s.n. Lassen Along county road 0.25 mile S of Mapes Ranch, Honey Lake Valley Comment
  CAS-BOT-BC266473  Downingia laeta Malcom A. Nobs; S. Galen Smith 1949-7-20 1047 Lassen Bieber, along Highway 299 Comment
  CAS-BOT-BC41953  Draba albertina John Thomas Howell 1934-6-30 12132 Lassen Warner Mountains. Near Lost Lake. 2438 Comment
  CAS-BOT-BC527338  Drymocallis glandulosa var. reflexa John Thomas Howell 1977-6-22 52405 Lassen West of Susanville near the confluence of Willard Creek and Susan River, Sierra Nevada 1432 Comment
  UC773878  Drymocallis lactea L. R. Short, J. Warren 1936-6-10 S- 425 Lassen Burgess Spring Experiment Range 1853 Comment
  HSC4373  Dysphania ambrosioides M. T. Milligan 1964-8-6 204 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  CHSC76099  Elaeagnus angustifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8223 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3-1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC116197  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20302 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
  CHSC116200  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20298 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
  CHSC60897  Elatine californica Vernon H. Oswald; Lowell Ahart 1993-7-8 5661 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1706 Comment
  CHSC60975  Elatine chilensis Lowell Ahart 1993-5-17 6954 Lassen On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  CAS-BOT-BC113591  Eleocharis acicularis John Thomas Howell 1959-9-23 34892 Lassen Juniper Lake camp grounds, Lassen Park 2057 Comment
  JEPS88513  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1996-6-24 7851 Lassen Papoose Meadows Modoc Plateau (ca 0.5 mi e of Eagle Lake Rd (A1) and 2.5 mi s of Eagle Lake, at pile of fenceposts on w side of meadow just s of cabins) 1633 Comment
  UC1567360  Eleocharis bella G. Schoolcraft 1989-7-18 1982 Lassen S of Clarks Valley Road near Bucks Spring 1874 Comment
  CHSC77256  Eleocharis macrostachya G. Schoolcraft 1995-6-27 2499 Lassen Cherry Creek. 1524 Comment
  JEPS121268  Eleocharis macrostachya Lowell Ahart 2013-7-22 18848 Lassen W margin of duck field, about 30 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA0039534  Eleocharis macrostachya Lowell A. Ahart, John Dittes 2012-7-9 18293 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
  UCD150399  Elodea canadensis William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC197349  Elymus Melissa A. Berry 1957-6-30 s.n. Lassen Highway 395 1280 Comment
  HSC10943  Elymus X hansenii M. T. Milligan 1964-8-6 210 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC506940  Elymus X saundersii George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassn <National> Forest 1737 Comment
  UCD62904  Elymus X saundersii Lester J. Berry 1960-7-8 Lassen Burgess Springs Road, floor of Harvey Valley, ca. 7 miles S of Black's Mtn. Exper. Station, USDA. Comment
  CAS-BOT-BC221829  Elymus canadensis Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  JEPS121785  Elymus cinereus B. Castro and L. P. Janeway 2012-7-2 1937 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at Skedaddle Ranch. Comment
  SJSU15451  Elymus cinereus John Rawlings, Sara Timby 2014-6-15 1266 Lassen In and around BLM campground at north end of Eagle Lake. 1580 Comment
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Feb 18 2015
  UC1924248  Elymus elymoides Debra Valov 2004-6-9 2004264 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD61624  Elymus elymoides A. A. Beetle 1941-6-28 2804 Lassen 10 miles W of Chester, rte 36. Comment
  CHSC118823  Elymus elymoides var. californicus L. P. Janeway; B Castro 2015-6-5 11762 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC112796  Elymus glaucus Lowell Ahart; John Dittes 2013-7-23 18893 Lassen About 30 feet northeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC234093  Elymus multisetus John Thomas Howell 1976-7-20 52001 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC213802  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Ruderal in city park, Susanville - Sierra Nevada 1295 Comment
  UCD62558  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Susanville. In city park. Comment
  CHSC111248  Elymus spicatus B. Castro; L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. 1417 Comment
  RSA0105549  Elymus spicatus L. P. Janeway, B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC99783  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2007-6-20 14908 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 of Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC112048  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2012-7-9 18297 Lassen On dry soil, on the south side of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC114411  Elymus trachycaulus subsp. trachycaulus Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, in landing at end of Road 28N52A. 2133 Comment
  CHSC77262  Elymus trachycaulus subsp. trachycaulus G. Schoolcraft 1994-7-6 2444 Lassen About 2 miles west of Boot Lake. 2103 Comment
  SEINET12755568  Elymus triticoides F. H. Hillman 1897-7-12 s.n. Lassen Chat. Comment
  SEINET12757019  Elymus triticoides B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11527 Lassen Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat. 1692 Comment
  SEINET12758322  Elymus triticoides D. Snider 1942-8-30 s.n. Lassen Pine Creek Camp. 1524 Comment
  POM119924  Ephedra californica Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  CDA753  Ephedra viridis S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 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
  RSA245293  Ephedra viridis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19306 Lassen Along Hwy 395 about 4 miles E of Standish Comment
  CHSC29866  Epilobium brachycarpum Robin L. Ondricek 1978-6-27 72 Lassen .6 mi n of Five Corners along road to ELFS. 1706 Comment
  JEPS117496  Epilobium brachycarpum Lowell Ahart, John Dittes 2010-7-31 17005 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  RSA0105578  Epilobium brachycarpum Lowell Ahart, John Dittes 2013-7-22 18845 Lassen About 10 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1523739  Epilobium campestre Gary Schoolcraft 1981-9-1 571 Lassen se of Bieber (along road) 1255 Comment
  NY1001463  Epilobium ciliatum var. ciliatum G. Schoolcraft 1990-7-11 2108 Lassen McKabe Spring north of Moon Lake 1669 Comment
  CHSC36981  Epilobium densiflorum M. S. Taylor 1982-8-19 5032 Lassen Roadside, along dirt rd 326, ca. 1/2 mi e of its jct with Milford Grade, ca. 1 air mi se of Milford. 1310 Comment
  JEPS88515  Epilobium hallianum Vernon H. Oswald and Lowell Ahart 1996-6-24 7849 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1587095  Epilobium minutum G. Schoolcraft 1991-7-30 2208 Lassen e slope Widow Mountain 1828 Comment
  CHSC77220  Epilobium oregonense G. Schoolcraft 1993-7-20 2330 Lassen About 1 mile s. of Boot Lake. Along creek. 1950 Comment
  UC1609447  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  GMDRC6955  Epilobium pallidum J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31430 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
  UC1122349  Epilobium pallidum A. Simontacchi 1940-6-5 853 Lassen 7.0 mi wnw Cones Headquarters; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA508633  Epipactis gigantea Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  CAS-BOT-BC57099  Equisetum X ferrissii Margaret Williams; Louella Bass 1972-10-22 EV 8 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CHSC4941  Equisetum laevigatum W. Lessig 1967-7-10 15 Lassen Coll. 3 1/2 mi. se Eagle Lake Biology Station, Upper Murrer's Meadow. 1524 Comment
  JEPS114954  Equisetum laevigatum Lowell Ahart, John Dittes 2008-6-20 14933 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CDA18386  Eragrostis cilianensis G. D. Barbe 1978-8-31 2425 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  RSA0045087  Eremogone congesta Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC174183  Eremogone congesta var. charlestonensis John Thomas Howell 1977-6-22 52401 Lassen North end of Eagle Lake 1584 Comment
  CHSC87106  Eremogone congesta var. congesta L. P. Janeway 2001-6-20 7191 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  CHSC91525  Eremogone congesta var. congesta L. P. Janeway 2005-7-3 8457 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CAS-BOT-BC174308  Eremogone congesta var. suffrutescens George W. Gillett 1957-7-29 945 Lassen Along trail between Butte Lake and Snag Lake. Lassen Volcanic National Park 1859 Comment
  SEINET12875577 Image available Eremogone congesta var. suffrutescens George W. Gillett 1957-1 945 Lassen Along trail between Butte Lake and Snag Lake. 1859 Comment
  CAS-BOT-BC481938  Eremogone kingii var. glabrescens B. J. Hammerly 1941-6-21 51 Lassen 8 mi SE of Likely on Blue Lake Road Comment
  CAS-BOT-BC159992  Eremothera boothii subsp. alyssoides G. L. Stage 1962-6-14 62 -131 Lassen 19 miles southeast of Ravendale Comment
  CAS-BOT-BC159999  Eremothera boothii subsp. alyssoides Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 7 miles south of Secret Valley C.C.C. Camp Comment
  CHSC64882  Eriastrum signatum Vernon H. Oswald; Lowell Ahart 1995-6-19 6894 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  UC526132  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen near Plumas Junction Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  RSA0124146  Eriastrum signatum David B. Dunn 1956-7-3 11922 Lassen On Highway 395. Comment
  RSA0125158  Eriastrum signatum Marcus E. Jones 1897-6-22 9972 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  UCD54567  Eriastrum sparsiflorum Ellen Dean; Dawn Cunningham 2005-10-25 2750 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  JEPS124584 Image available Eriastrum sparsiflorum M. R. Kempf 1965-7-12 290 Lassen 1 mile N. of Milburn, growing west side of road HWY 398. Comment
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  NY1012936  Eriastrum sparsiflorum var. wilcoxii G. Schoolcraft 1985-7-29 1492 Lassen West slopes of Fort Sage Mountains 1585 Comment
  CAS-BOT-BC286604  Ericameria bloomeri R. K. Gierisch; D. H. Esplin 1969-8-27 3598 Lassen Lassen National Forest Comment
  UC1118663  Ericameria bloomeri H. P. Hagge 1929-9-11 15 Lassen Logan Mt. Eagle Lake Quad., Logan Mtn. 1828 Comment
  UC1136849  Ericameria bloomeri L. R. Short and J. Warren 1936-8-17 S- 497 Lassen Burgess Spr. Exp. Range Lassen Forest 1767 Comment
  CAS-BOT-BC298175  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel on the road to Janesville 1219 Comment
  CHSC76085  Ericameria nauseosa var. oreophila Lowell Ahart; Vernon H. Oswald 1999-9-13 8220 Lassen Along road, about 100 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1483819  Ericameria nauseosa var. speciosa G. Schoolcraft 1980-10-8 359 Lassen w side of Painters Flat 1716 Comment
  CAS-BOT-BC299486  Ericameria nauseosa var. washoensis Gary Schoolcraft 1984-9-11 1375 Lassen Along Hwy. 395 about 1/2 mile south of Ramhorn Campground Road 1615 Comment
  UC527350  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 Lassen 0.5 mi from Janesville (on the road to Wendel, w edge of Honey Lake Valley); Honey Lake Valley 1280 Comment
  CHSC25084  Erigeron K. R. Stern 1967-6-24 2408 Lassen Murrer Meadow, Ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  RSA42038  Erigeron aphanactis Ella Dales Cantelow 1941-5-24 3567 Lassen Balls Canyon S of Secret Valley; U. S. Hwy. 395 Comment
  CAS-BOT-BC293526  Erigeron aphanactis var. aphanactis Margaret Williams 1974-7-27 74 -L-49 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SEINET8079426 Image available Erigeron aphanactis var. aphanactis M. J. Williams 1974-7-29 74- 1 -49 Lassen 2 mi. west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UCR244068  Erigeron aphanactis var. aphanactis Jim Andre, G. L. Clifton 1993-6-9 19694 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
  UCD131273  Erigeron bloomeri Beecher Crampton 1960-6-18 5723 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  SEINET201632  Erigeron bloomeri A. Cronquist, AH Holmgren 1959-6-17 8460 Lassen 50 mi SE of Susanville Comment
  CAS-BOT-BC294485  Erigeron bloomeri var. bloomeri John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50676 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CHSC68843  Erigeron bloomeri var. bloomeri Vernon Oswald; Lowell Ahart 1997-6-24 8631 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
  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
  UCR268961  Erigeron bloomeri var. bloomeri Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31427 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-BC296847  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-16 8340 Lassen Janesville Comment
  JEPS127714  Erigeron divergens Alejandro Brambila, Michael Dolan 2016-7-20 CA 320 -169 Lassen Railroad trail north of Tule Mountain. Collection is North of gate on Modoc-Lassen county line. Comment
  UC1561865  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca .75 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  UC1924228  Erigeron divergens Debra Valov 2004-6-8 2004246 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC295976  Erigeron divergens Peter H. Raven 1963-5-29 18424 Lassen U.S. Highway 395 12.0 miles south of Ravendale Comment
  CHSC27599  Erigeron eatonii var. plantagineus Cindy Prouty 1978-7-5 12 Lassen East shore of Mahogany Lake, S of Eagle Lake. 2060 Comment
  HSC28860  Erigeron eatonii var. plantagineus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19253 Lassen Harvey Valley near Cone Springs Comment
  POM32997  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA0049606  Erigeron eatonii var. plantagineus Dean Wm. Taylor 2012-6-6 21226 Lassen ca. 5 air miles West of Susanville, site is 1 mile due north of the junction of Highway 44 and Highway 36 1877 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  UC87584  Erigeron eatonii var. plantagineus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  HSC63942  Erigeron filifolius Teresa Prendusi 1980-7-10 Lassen Little Fredonyer, NW end of Horse Lake 1677 Comment
  CAS-BOT-BC295180  Erigeron inornatus Clarence R. Quick 1964-8-5 64 -97 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CAS-BOT-BC295182  Erigeron inornatus John Thomas Howell 1974-7-10 50561 Lassen Elysian Valley 1325 Comment
  OBI76966  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen Natl Forest.N of 30N61, W of A21. Swain Mtn quad. T30N R8E sec 26 NW of SW 1728 Comment
  SFV10992  Erigeron lassenianus var. deficiens J. Turner, F. M. Ball 1962-7-13 1193 Lassen Laufman Public Camp, 3 miles off Highway 395 from Milford near Honey Lake. 1494 Comment
  UC206218  Erigeron linearis Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  HSC63962  Erigeron linearis Teresa Prendusi 1980-4-30 Lassen Upper slopes of Shaffer Mtn. 1738 Comment
  CHSC77195  Erigeron nevadincola G. Schoolcraft 1998-6-30 Lassen N. slope of Ft. Sage Mtns. 1950 Comment
  POM32998  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CDA34230  Erigeron pumilus subsp. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  RSA700053  Erigeron pumilus subsp. 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 NNW of Harvey Mountain. 1640 Comment
  POM261457  Erigeron pumilus subsp. intermedius Alice Eastwood, John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC68845  Erigeron pumilus var. intermedius Vernon Oswald; Lowell Ahart 1997-6-24 8648 Lassen South of Susanville at the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  SBBG128042  Erigeron pumilus var. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen ca. 3330 feet N 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
  CAS-BOT-BC244039  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen Between Shaffer Mt. and Warren Peak Comment
  SJSU13948  Eriogonum baileyi var. praebens N. A. Hopkins 1986-8-28 1381 Lassen County Rd 33 (Scott Rd), lower Long Valley N of Hwy &0 & E of Beckwourth Pass Comment
  CAS-BOT-BC241832  Eriogonum caespitosum B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6567 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield 1330 Comment
  NY242506  Eriogonum collinum A. J. Cronquist 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  NY652195  Eriogonum collinum B. Corbin 2002-9-4 1099 Lassen Just north of Biscar Reservoir, just south of railroad 1399.0 Comment
  UC1395152  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen 4.5 mi s, along U.S. Highway 395 Ravendale Comment
  UC1537297  Eriogonum collinum Gordon H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1493 Comment
  CAS-BOT-BC246498  Eriogonum douglasii var. meridionale H. D. Ripley; R. C. Barneby 1943-6-13 5712 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC246502  Eriogonum douglasii var. meridionale Doris Kildale Gillespie 1930-5-13 9361 Lassen Between Susanville and Janesville Comment
  CHSC23494  Eriogonum douglasii var. meridionale K. R. Stern 1974-6-26 5866 Lassen E end of Champs Flat. Comment
  CAS-BOT-BC246500  Eriogonum douglasii var. meridionale Parkison & Party 1916-6-8 8 Lassen Lassen National Forest, Sage type, Harvey Valley 1676 Comment
  CAS-BOT-BC246510  Eriogonum elatum var. elatum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50666 Lassen Summit ridge of Diamond Mt. 2346 Comment
  JEPS104110  Eriogonum microthecum var. ambiguum Lowell Ahart 2003-8-17 10518 Lassen Small drainage, ca 100 yd w of the cattle guard, on the se side of Smoke Creek Ranch Rd, ca 8-9 mi (air) ne of Highway 395, ca 30 mi (air) ne of Susanville. 1450 Comment
  CHSC78482  Eriogonum microthecum var. laxiflorum Vernon H. Oswald 2000-7-31 9947 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  NY281555  Eriogonum microthecum var. laxiflorum E. K. Balls 1952-10-10 18143 Lassen In Northern Juniper Woodland, 8 mi. s.e. of Ravendale, Hwy 395, between Susanville and Alturas. 1280.2 Comment
  UC85949  Eriogonum microthecum var. laxiflorum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  OBI76957  Eriogonum nudum var. nudum Anthony Baniaga 2011-7-5 420 Lassen Lassen Natl Forest, e of Willard Crk. Fredonyer Pass quad. T29NR10E sec 25 NE of NW 1485 Comment
  CHSC13698  Eriogonum nudum var. pubiflorum J. Wolf 1946-6-24 Lassen MeCoy Flat. Eagle Lake. 1645 Comment
  JEPS126464  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-27 CA 350 -070 Lassen North on Highway 139 to Antelope Grade. Comment
  UC1542948  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1760 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  UC1542950  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1758 Lassen Hayden Hill, old town site 1737 Comment
  HSC68914  Eriogonum nudum var. pubiflorum Gary Schoolcraft 1979-7-3 117 Lassen 1.0 mi. NW of rest area on Hwy. 395 1570 Comment
  SEINET523073  Eriogonum ochrocephalum var. ochrocephalum Paul Opler 2002-6-22 Lassen US 395, 1 mi. S. Hallelotah junction. Comment
  UC54767  Eriogonum ovalifolium var. ovalifolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee Honey Lake Valley, Amadee Comment
  UC1483820  Eriogonum prociduum G. Schoolcraft 1980-7-14 308 Lassen w Madeline (Ash Valley); Ash Valley 1548 Comment
  UC6570  Eriogonum prociduum Mrs. R. M. Austin June, 1894 Lassen Willow Creek Valley Comment
  CHSC64845  Eriogonum prociduum var. prociduum Vernon H. Oswald 1995-6-26 6939 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
  POM203845  Eriogonum spergulinum var. reddingianum J. T. Howell 1934-7-6 12446 Lassen Harvey Valley Comment
  NY283103  Eriogonum sphaerocephalum G. Schoolcraft 1982-6-28 737 Lassen Fort Sage Mountains 1706.9 Comment
  CHSC6226  Eriogonum sphaerocephalum var. halimioides 1944-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 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
  SEINET530720  Eriogonum sphaerocephalum var. halimioides Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 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
  JEPS93829  Eriogonum strictum var. anserinum Vernon H. Oswald and Lowell Ahart 1998-6-4 9147 Lassen s of Constantia (Spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  CAS-BOT-BC267894  Eriogonum umbellatum A. M. Vollmer; L. Beane 1953-7-1 102 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS126484  Eriogonum umbellatum Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -051 Lassen Take Horse Lake Road for about 15 miles. Comment
  RSA0025577  Eriogonum umbellatum John F. Emmel 1996-7-14 1427 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. Comment
  SEINET10479553  Eriogonum umbellatum Mary Susan Taylor 1974-1 Taylor 306 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC66395  Eriogonum umbellatum var. modocense Vernon H. Oswald; Lowell Ahart 1996-6-17 7799 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  JEPS56179  Eriogonum umbellatum var. modocense Brown and Wieslander 1922-7-23 7 Lassen Martin Sprs., Eagle Lake Comment
  JEPS56226  Eriogonum umbellatum var. modocense W. L. Jepson 1910-6-10 4115 Lassen King Creek 1676 Comment
  UC725728  Eriogonum umbellatum var. modocense A. A. Heller 1938-6-23 15202 Lassen w Susanville Comment
  UCR268959  Eriogonum umbellatum var. modocense Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31429 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-BC265092  Eriogonum umbellatum var. nevadense John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50673 Lassen Summit ridge of Diamond Mt., Sierra Nevada 2346 Comment
  CAS-BOT-BC265099  Eriogonum umbellatum var. nevadense Mrs. E. C. Van Dyke 1931-6-13 s.n. Lassen Kelly Camp, Mt. Lassen Natl. Park Comment
  CHSC106592  Eriogonum umbellatum var. nevadense C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  JEPS107821  Eriogonum umbellatum var. nevadense Lowell Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  JEPS56240  Eriogonum umbellatum var. nevadense Hilda W. Grinnell 1928-6-26 Lassen inside crater-rim of Cinder Cone Lassen Volcanic National Park 2103 Comment
  UC1483832  Eriogonum umbellatum var. nevadense G. Schoolcraft 1979-7-5 126 Lassen 5.2 mi. from Horne Ranch Road (intersection up Observation Lookout Road) 2286 Comment
  CHSC106083  Eriogonum umbellatum var. polyanthum Lowell Ahart; John Dittes 2010-7-31 16988 Lassen About 2300 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
  POM105077  Eriogonum umbellatum var. polyanthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  POM253240  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15202 Lassen Ocasional on on pen gravelly slope denuded of timber west of Susanville. Comment
  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
  CHSC56867  Eriogonum vimineum Mary Meyer 1980-7-3 Lassen North of Jeep trail going up drainage above camping pullover. 1584 Comment
  JEPS104108  Eriogonum vimineum Lowell Ahart 2003-8-17 10516 Lassen On the w side of the paved road, on the e side of Highway 36, ca 1/4 mi sw of the Susan River, ca 8 mi (air) sw of Susanville. 1433 Comment
  POM203843  Eriogonum vimineum J. T. Howell 1934-7-8 12493 Lassen Spaldings Resort; Eagle Lake Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  UC6518  Eriogonum vimineum M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  SD51226  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2 miles north of Janesville on #395 1280 Comment
  HSC28818  Eriophyllum lanatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19256 Lassen Harvey Valley near Cone Springs Comment
  HSC81546  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 5997 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM253262  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen Ridge east of Fredonyer Pass on Highway 36 1646 Comment
  UC725390  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen e slope of Freydonyer Pass (on State Highway #36); State Highway #36, Freydonyer Pass 1645 Comment
  UCR244036  Eriophyllum lanatum var. achilleoides Jim Andre 1993-6-5 19706 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  RSA92671  Eriophyllum lanatum var. achilleoides F. W. Peirson 1926-6-24 6849 Lassen Several miles southward from the Madeline Plain Comment
  SEINET8687254 Image available Eriophyllum lanatum var. achilleoides J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  JEPS117575  Eriophyllum lanatum var. grandiflorum Lowell Ahart, John Dittes 2010-7-31 17024 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC301531  Eriophyllum lanatum var. integrifolium Louella Bass 1983-6-10 8 -83 Lassen Lassen College Campus, Susanville Comment
  CHSC59502  Eriophyllum lanatum var. integrifolium Mary Meyer 1980-1-1 Lassen Several yards west of gravel pits. 1615 Comment
  UC507013  Eriophyllum lanatum var. integrifolium George A. Fischer and Irwin H. Johnson 1933-7-12 F- 200 Lassen Grass Valley Lassen National Forest, Grass Valley 1697 Comment
  CHSC116092  Erodium cicutarium Lowell Ahart; John Dittes 2015-7-13 20320 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC91300  Erodium cicutarium Lowell Ahart; John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS107866  Erodium cicutarium Lowell Ahart, John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UCD18971  Eryngium alismifolium Raymond D. Ratliff 1965-8-4 39 Lassen Lassen National Forest, Harvey Valley Allotment (HV 78-73). 1706 Comment
  CDA38324  Eryngium articulatum Wheeler 1953-9-22 s.n. Lassen [no additional info] 0 Comment
  UC1533163  Erysimum capitatum G. Schoolcraft 1986-4-28 1529 Lassen lower w slopes Ft. Sage Mtns. 1432 Comment
  UC1137587  Erysimum capitatum var. capitatum A. Simontacchi 1940-6-15 868 Lassen 0.6 mi wsw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle 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
  CHSC91306  Erythranthe floribunda Lowell Ahart; John Dittes 2005-6-2 11970 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC30569  Erythranthe guttata Sori H. Shad 1970-6-26 30 Lassen Collected in Deans Meadow. 1950 Comment
  SEINET14291746  Erythranthe guttata C. G. Gulling 1905-1 1546 Lassen Big Meadows. Comment
  SD7074  Erythranthe lewisii Mrs. R. M. Austin 1882-8-7 Lassen King's Valley 2133 Comment
  CAS-BOT-BC153611  Erythranthe moniliformis Clare B. Hardham 1971-8-22 18384 Lassen Diamond Mountain 2133 Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  SEINET13754534 Image available Erythranthe pulsiferae C. L. Hitchcock 1940-1 6611 Lassen Lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1370 Comment
  CAS-BOT-BC502813  Erythronium purpurascens Alice Eastwood 1912-8-22 s.n. Lassen Trail from Morgan Spring to Lassen Butte Comment
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 Comment
  CAS-BOT-BC403149  Eschscholzia californica Elmer I. Applegate 1923-9-30 4033 Lassen Constantia Comment
  RSA149124  Eschscholzia californica var. crocea I. L. Wiggins, Dorothy B. Wiggins 1961-6-16 16531 Lassen Along Highway 299, overlooking Big Valley 1250 Comment
  RSA183413  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its jct with Bassett Road (ca 2 miles S of US Hwy 299 and 4 miles SW of Adin). 1280 Comment
  JEPS124375  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart, John Dittes 2015-7-13 20312 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC64874  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1995-6-19 6881 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  UCD98885  Fallopia convolvulus R. N. Raynor 1938-7-16 s.n. Lassen Clark Dairy Ranch, 3 mi. SE Susanville. Comment
  RSA0027354  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak. 2378 Comment
  CHSC27575  Festuca idahoensis Robert Schlising 1978-7-11 3316 Lassen S of Eagle Lake at Papoose Creek. 1584 Comment
  UC60788  Festuca idahoensis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  UCD66336  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  CHSC6252  Fragaria virginiana P. Balch 1955-6-1 Lassen Stephens meadows. 1905 Comment
  UCR18732  Frasera albicaulis Frank C. Vasek 1975-7-11 750711- 05 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CHSC7658  Fritillaria pudica Beverly J. Wise 1969-3-29 143 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  CAS-BOT-BC304301  Gaillardia aristata T. C. Fuller 1965-8-25 14036 Lassen E side of Highway 395 to Doyle, 2.4 miles N of Hallelujah Junction Comment
  RSA180586  Gaillardia aristata T. C. Fuller 1965-8-25 14036 Lassen East side of Hwy. 395 to Doyle, 2.4 miles north of Hallelujah Junction Comment
  UC773941  Galium aparine L. R. Short and Wm. Gansberg 1936-6-2 S- 367 Lassen Burgess Spring Experimental Range Lassen National Forest 1850 Comment
  CHSC59813  Galium multiflorum Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In rocks on lower Balls Canyon wall. 1341 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  CHSC113000  Galium trifidum subsp. columbianum Lowell Ahart; John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60407  Galium trifidum var. pacificum Mary Ann Showers 1992-6-13 2552 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CAS-BOT-BC478879  Gayophytum John Thomas Howell; Gordon H. True 1973-7-31 50035 Lassen On road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  CHSC105246  Gayophytum diffusum subsp. diffusum Lowell Ahart; John Dittes 2010-7-31 17020 Lassen On the north side of the road, about 30 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
  CHSC29860  Gayophytum diffusum subsp. parviflorum Robin L. Ondricek 1978-6-26 70 Lassen .5 mi n of jct. with 5.16 on road to ELFS. 1572 Comment
  SBBG61277  Gayophytum diffusum subsp. parviflorum S. W. Hutchinson -Jun-1925 735 Lassen Eagle Lake 1554 Comment
  POM38702  Gayophytum helleri var. glabrum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  POM203958  Gayophytum racemosum J. T. Howell 1934-7-7 12473 Lassen Harvey Valley. Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 Comment
  POM253026  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen About a mile east of Westwood. 1524 Comment
  CHSC5059  Geranium viscosissimum var. nervosum B. Anthony 1967-7-4 297 Lassen Dean's Meadow. 6-8 mi. from Eagle Lake Biological Station. 1920 Comment
  CHSC6254  Geum macrophyllum L. Harman 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  JEPS47198  Geum triflorum Frances D. Payne 1929-7-12 87 Lassen on ridge above Lost Lake (Upper Silver Creek, northwestern Lassen County); Warner Mountains, Upper Silver Creek 2286 Comment
  UC1137768  Geum triflorum August L. Hormay 1934-7-2 Lassen Lassen National Forest, Black's Mountain Headquarters Black's Mountain Headquarters; Lassen National Forest, Black's Mountain Headquarters 1706 Comment
  UC773877  Geum triflorum L. R. Short, J. Warren 1936-6-23 S 423 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1764 Comment
  JEPS107828  Gilia inconspicua Lowell Ahart, John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  JEPS94632  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen spur road on n side of Red Rock Rd. 0.6 mi e Hwy. 395 (s of Constantia) 1389 Comment
  JEPS94702  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-5-22 9107 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains 1371 Comment
  UC1483794  Gilia leptomeria G. Schoolcraft 1980-5-7 220 Lassen n shore Honey Lake Island n shore of Honey Lake Island 1219 Comment
  UC1776720  Gilia leptomeria G. Schoolcraft 1998-6-8 2732 Lassen Lower slopes of amedee in gravel pit 1249 Comment
  UC1584002  Gilia lottiae G. Schoolcraft 1990-6-12 2085 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); e of Ravendale in Pine Dunes RNA 1706 Comment
  RSA95714  Gilia modocensis Verne Grant, Alva Grant 1955-6-8 9666 A Lassen c. 2 miles north of Doyle. 1311 Comment
Read comments
May 2 2012
  POM74852  Gilia sinuata Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1583986  Gilia sinuata G. Schoolcraft 1990-6-12 2091 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); Pine Dunes RNA, e of Ravendale 1706 Comment
  HSC95337  Glyceria borealis Gordon Leppig, J. Cromwell 1997-7-27 624 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  JEPS28295  Glyceria borealis George W. Gillett 1957-7-26 922 Lassen Lassen Volcanic Nat'l Park, Butte Lake 1844 Comment
  OBI77053  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  CHSC77264  Glyceria elata G. Schoolcraft 1997-7-30 2614 Lassen W facing slope of Diamond Mtn. 1950 Comment
  UCR244038  Glyptopleura marginata Jim Andre 1993-6-1 19708 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CHSC93664  Gnaphalium palustre Lowell Ahart; John Dittes 2005-6-2 11968 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
  CHSC60922  Gratiola ebracteata Vernon H. Oswald; Lowell Ahart 1993-7-8 5650 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  CHSC65359  Gratiola heterosepala Vernon H. Oswald; Lowell Ahart 1995-8-14 7200 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  CDA23423  Grayia spinosa Robin Breckenridge 2007-5-1 PDR# 1349824 Lassen Wendel. 0 Comment
  CHSC30600  Grayia spinosa L. J. Dawson 1975-7-7 41 Lassen Ca. 500 yd e of Horselake, playa lake. 1584 Comment
  CHSC31131  Grayia spinosa J. S. White 1980-4-14 118 Lassen On 2% s slope, 1 mi ne of Wendel. 1295 Comment
  CHSC34404  Grayia spinosa P. Reynolds 1979-7-4 20 Lassen 1 mi. ne of Wendel. Base of Wendel Canyon. 1295 Comment
  CHSC5232  Grayia spinosa J. E. Wolf 1946-6-28 Lassen Eagle Lake. Horse Lake. 1554 Comment
  CHSC64781  Grayia spinosa Vernon H. Oswald 1995-5-24 6764 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of Amedee Mtns. 1249 Comment
  CHSC7711  Grayia spinosa Beverley J. Wise 1969-5-18 7 Lassen 13.4 mi. east of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  UCD98871  Grayia spinosa S. Stephens 1980-4-14 s.n. Lassen 1/8 mi. off Wendel Rd. on Brubeck spgs. Rd. Comment
  CAS-BOT-BC304679  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  CAS-BOT-BC304680  Grindelia squarrosa Margaret Williams 1974-8-4 74 -L-84 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS87405  Gymnosteris parvula Vernon H. Oswald and Lowell Ahart 1993-6-3 5485 Lassen between Susanville and Poison Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi n of its jct w Lassen 21 (32N02) to Eagle Lake, on w edge of Pine Creek Valley); Pine Creek Valley, Champs Flat Road 1731 Comment
  UCD98138  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CDA3429  Gypsophila paniculata T. C. Fuller 1971-10-6 19933 Lassen Northeast side of Highway 395 to Susanville, 1 mile north of Janesville. 0 Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  UC773869  Hackelia californica L. R. Short, J. Warren 1936-6-26 S 458 Lassen Burgess Spring Experiment Range; Lassen National Forest 1853 Comment
  UC1035983  Hackelia californica Helen K. Sharsmith 1955-6-27 4517 Lassen n of Hat Creek Ranger Station (forest adjacent to Highway 89); Lassen National Forest 1158 Comment
  UC24814  Hackelia cusickii M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mountains Comment
  UCD98884  Halogeton glomeratus Les Berry; J. L. Myler 1954-8-17 s.n. Lassen Karlo. Comment
  UCD98902  Halogeton glomeratus R. Tofsrud; J. M. Tucker 1950-7-26 1978 Lassen Herlong Army Ordnance Depot, southeastern Lassen County. Comment
  UCR57493  Helianthus annuus R. D. Goeden, Don W. Ricker 1989-8-22 890822- 9 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  JEPS124644 Image available Helianthus annuus M. R. Kempf 1965-7-12 284 Lassen [...] miles south of Milburn on Hwy 395- Sierra Valley. Comment
  JEPS94088  Helianthus bolanderi Vernon H. Oswald and Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at R.R. overpass on e. side of Nubieber 1255 Comment
  CHSC118791  Helianthus cusickii L. P. Janeway; B. Castro 2015-6-5 11755 Lassen Great basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  RSA17683  Helianthus cusickii Elmer I. Applegate 1934-5-4 8927 Lassen South end of Secret Valley 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
  SJSU8355  Helianthus petiolaris subsp. petiolaris W. Savage 1971-7-20 722 Lassen c. 2 mi N of Milford near W side of Honey L 1264 Comment
  POM360351  Hemizonia lobbii J. T. Howell 1934-7-3 12380 Lassen Big Valley, near Bieber Comment
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  JEPS19755  Hesperolinon micranthum Rimo Bacigalupi with S. Galen Smith 1957-6-28 5995 Lassen just e U. S. Highway No. 395 (7.0 mi n of Madeline (about a mi n of Sage Hen siding on Southern Pacific RR line)) Comment
  UC1523712  Hesperolinon micranthum Gary Schoolcraft 1981-6-25 478 Lassen East Fork of Wellard Creek 1584 Comment
  UC1601274  Hesperolinon micranthum Leo Whitney 1934-9-5 1889 Lassen between Susanville and Westwood; Lassen National Forest, Fredonyer Pass 1706 Comment
  UC1924195  Hesperolinon micranthum Debra Valov 2005-8-20 2005235 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 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
  HSC68915  Hesperolinon micranthum Gary Schoolcraft 1980-7-10 302 Lassen Along Hwy. 139 just N of turn off to Eagle Lake campground. 1585 Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA127454  Hesperolinon micranthum Peter H. Raven, Otto T. Solbrig 1958-6-17 13300 Lassen 8.0 miles north of Madeline along Unites States Highway 395. Comment
  SJSU7861  Hesperolinon micranthum V. Hardham 1965-7-12 127 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou County) on State Rt 139 1463 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
  CHSC60795  Hesperostipa comata subsp. comata Vernon H. Oswald; Lowell Ahart 1993-6-14 5542 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  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
  POM36066  Hieracium albiflorum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC135018  Hieracium albiflorum T. S. Brandegee 1892-7-2 s. n. Lassen Susanville Comment
  CAS-BOT-BC312415  Hieracium albiflorum Alice Eastwood 1912-8-22 1781 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  JEPS97327  Hieracium scouleri Vernon H. Oswald 1995-8-21 7206 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  JEPS124842 Image available Hippuris vulgaris Laurel Loeblich 1964-7-1 69 Lassen Collected in stagnant water at side of highway 139, 17.9 miles north of Susanville. Comment
  UCR7790  Holcus lanatus Marilyn Malin 1968-7-11 261 Lassen West side of Hwy 395 on west side of Honey Lake 1280 Comment
Read comments
Sep 19 2013
  CHSC6255  Holodiscus microphyllus var. glabrescens M. West 1946-7-7 Lassen Cone Lake near east border of Lassen Nat. Park. 1828 Comment
  CHSC107997  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2011-6-20 17482 Lassen On the east bank of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  POM352505  Hordeum arizonicum A. A. Beetle 1941-6-28 s.n. Lassen 6 mi south of Ravendale, Lower slopes of Observation Peak Comment
  UCD85479  Hordeum brachyantherum L. Whitney 1933-8-2 s.n. Lassen Near Slate Creek. 1889 Comment
  CAS-BOT-BC284713  Hordeum jubatum John Thomas Howell 1973-7-10 49775 Lassen Fredonyer Pass 1737 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
  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
  UCD85785  Hordeum marinum subsp. gussoneanum A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3368 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  UCD85868  Hordeum marinum subsp. gussoneanum John Thomas Howell 1974-7-10 50533 a Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC284896  Hordeum murinum subsp. leporinum John Thomas Howell 1973-7-10 49801 Lassen Susanville 1295 Comment
  UC1483792  Horkelia fusca subsp. tenella Teresa Prendusi 1980-7-1 Lassen Littel Antelope Valley, Bureau of Land Management 1676 Comment
  UC1609471  Horkelia fusca subsp. tenella Vernon H. Oswald and Lowell Ahart 1993-6-28 5577 Lassen 0.2 mi n Hwy 44 (Harvey Valley Rd (33N02), e side of Grays Valley, e of Poison Lake); e of Poison Lake, e side of Grays Valley 1749 Comment
  NY170060  Hutchinsia procumbens A. Tiehm 1980-5-29 5749 Lassen N end of Honey Lake Valley, just N of Hot Springs, 1.1 air mi NNW of Wendel. 1231.4 Comment
  UC773900  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen Burgess Spring Experiment Range; Lassen Forest 1752 Comment
  RSA122624  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen MDM, Burgess Spr. Exp. Range. 1753 Comment
  POM95280  Hymenolobus procumbens Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  JEPS66829  Hypericum formosum var. scouleri Brown and Wieslander 1922-7-30 28 Lassen Eagle Lake, Martin Springs Comment
  CDA36537  Hypericum formosum var. scouleri T. C. Fuller 1959-7-6 4304 Lassen Hwy. 36, about 1 mi. north of Westwood. 0 Comment
  CHSC7707  Idahoa scapigera Beverley J. Wise 1969-4-10 37 Lassen 1.5 mi. north on Hwy 139. 1341 Comment
  NY52525  Iliamna bakeri G. Schoolcraft 1983-7-20 1101 Lassen SE slopes of Fredonyer[?] mtn. 2011.7 Comment
  CHSC12453  Ipomopsis aggregata subsp. formosissima Robert W. Severin 1969-7-10 46 Lassen Found on Galatin Peak, in burn area; 2 mi s of E.L.B.S. 1828 Comment
  CHSC6203  Ipomopsis aggregata subsp. formosissima P. Balch 1955-7-17 Lassen Eagle Lake. Mouth of Papoose Creek, near Gallatin Beach. 1561 Comment
  POM75265  Ipomopsis aggregata subsp. formosissima Marcus E. Jones 1897-6-28 10201 Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC64801  Ipomopsis polycladon Vernon H. Oswald 1995-5-24 6769 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  UCD135760  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake campground, Lassen Park. 2057 Comment
  CAS-BOT-BC61865  Isoetes nuttallii John Thomas Howell 1974-7-10 50537 Lassen Elysian Valley 1325 Comment
  UCD54548  Iva axillaris Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2733 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  NY436061  Ivesia paniculata T. W. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 miles E of Adin. 1554.5 Comment
  JEPS109644  Ivesia sericoleuca Dean W. Taylor 2002-6-21 18168 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  CHSC47521  Juncus balticus Lowell Ahart; John Thomas Howell 1974-7-9 542 Lassen At the south edge of Eagle Lake. 1584 Comment
  UC2481  Juncus balticus J. Burtt Davy Jun 17 1897-Jun 24 1897 3277 Lassen Tule Confederacy Honey Lake Valley Comment
  JEPS121288  Juncus balticus subsp. ater Lowell Ahart, John Dittes 2013-7-23 18903 Lassen 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
  HSC23084  Juncus balticus subsp. ater John Pratt 1970-1 14 Lassen Comment
  CHSC93553  Juncus bryoides Lowell Ahart; John Dittes 2005-6-2 11960 Lassen Long Valley, moist meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, 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
  UC1583258  Juncus bufonius Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9467 Lassen 5.6 km (3.5 mi) s Madeline (along Highway 395); Madeline Plains 1620 Comment
  SEINET11787326  Juncus bufonius A. Tiehm, Nachlinger, J.; Schoolcraft, G. 1984-1 8824 Lassen Rodeo Flat, 2.7 road mi W of state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  HSC97877  Juncus hemiendytus var. hemiendytus Vernon H. Oswald, L. Ahart 1996-6-24 7852 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1), 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 Comment
  RSA201304  Juncus howellii J. T. Howell 1959-9-23 34880 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  CHSC114407  Juncus laccatus Don Lepley 2014-6-17 Lassen Lassen National Forest; Eagle Lake Ranger District. Location uncertain; near one of the forks of Baxter Cfreek, probably the northernmost one, along either Road 29N07 or downslope at the A-spur. SE1/4 of NE1/4 of Sec 5 of SW1/4 of NW1/4 of Sec 4. 1767 Comment
  SEINET3507367 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  UC506935  Juncus mexicanus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 238 Lassen Patterson Flat Lassen National Forest 1737 Comment
  HSC95202  Juncus nevadensis Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-28 512 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS28659  Juncus nevadensis George W. Gillett 1957-7-21 866 Lassen along trail from Juniper Lake to Cameron Meadow; Lassen Volcanic National Park 2118 Comment
  CHSC105756  Juncus nevadensis var. nevadensis Peter F. Zika 2008-7-14 23892 Lassen Cascade Range Highlands (CaRH). S side of Route 44, SE end of Grays Valley near Lodgepole. 1730 Comment
  UC1601833  Juncus parryi M. S. Baker and Frank Nutting 1894-7-30 Lassen Silve Lake Silver Lake Comment
  JEPS117620  Juncus tenuis Lowell Ahart, John Dittes 2010-7-31 17026 Lassen About 20 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CHSC117212  Juncus tiehmii Lowell Ahart; John Dittes 2016-6-7 20989 Lassen West edge of pond, near spillway 5 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
  JEPS121379  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, yellow pine forest Comment
  SD243239  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen Cascade Range Highlands: S side of Route 44, SE end of Grays Valley near Lodgepole. 1730 Comment
  CHSC117195  Juniperus occidentalis Lowell Ahart; John Dittes 2016-6-7 20974 Lassen 20 yards west of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  HSC24602  Juniperus occidentalis K. P. St. John 1965-5-6 38 Lassen 15 mi. N of Litchfield on Hwy. 395 Comment
  JEPS126564  Juniperus occidentalis Lowell Ahart, John Dittes 2016-6-7 20974 Lassen About 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  SEINET3864782 Image available Juniperus occidentalis Maile Neel 2000-4-29 G- 1 Lassen Northern Sierra Nevada Mtns. Six miles west of Susanville on Hwy 36 at intersection with Eagle Lake Road (A1) near Eagle Ranger Station, Lassen National Forest. (Susanville 7.7'Q).; 0 1400 Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  SEINET10834011  Juniperus occidentalis David B. Dunn 1956-7-3 Dunn 11918 Lassen Collected on rolling gravelly-rocky slopes with scattered juniper open field. Considerable Artemisia tridentata ( Hwy 395). Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  SEINET11056685  Juniperus occidentalis var. occidentalis D. Charlet 1994-7-6 1923 Lassen Susanville, corner of Main and Fair Streets. 1292 Comment
  UCR4284  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-9-1 650901- 01 Lassen On Karlo Road 3.6 mi north of the junction of Karlo Road & Litchfield Road, north of Susanville 1355 Comment
  SEINET11066903  Juniperus osteosperma G. Schoolcraft 1998-4-27 2705 Lassen N end of Fort Sage Mountains, W slope. 1951 Comment
  SEINET5335014  Juniperus osteosperma P. A. Lehenbauer 1937-10-24 s.n. Lassen east & south of Hallelujah Sta. 20 miles N of Reno Comment
  CHSC57200  Kelloggia galioides Mary Meyer 1980-7-21 Lassen Beneath white fir stand. 2103 Comment
  CHSC77232  Kelloggia galioides G. Schoolcraft 1997-6-26 2605 Lassen Large knob W of Hwy 395 between Janesville and Milford. 1706 Comment
  UC1125668  Kelloggia galioides H. P. Hagge 1929-9-17 37 Lassen Logan Mtn.; Eagle Lake Quad. 1828 Comment
  CDA42199  Kelloggia galioides T. C. Fuller 1963-7-15 10906 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  RSA715671  Koeleria macrantha L. Ahart, John Dittes 2005-6-1 11860 Lassen on the east side of the poor dirt road, about 1/2 mile west of Scott Road, long Valley, about 2 miles (air) northwest of the intersection on Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1136816  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-7-12 F 205 Lassen Grass Valley; Lassen National Forest, Grass Valley 1699 Comment
  HSC103612  Kyhosia bolanderi Thomas W. Nelson, Jane Nelson 1985-8-10 8004 Lassen Along north side of Silver Lake 1829 Comment
  CHSC113011  Lactuca serriola Lowell Ahart; John Dittes 2013-7-23 18887 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  CAS-BOT-BC341485  Lagophylla ramosissima John Thomas Howell 1974-7-10 50527 Lassen Elysian Valley 1325 Comment
  RSA0009792  Lagophylla ramosissima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA0036999  Lamium amplexicaule Lowell A. Ahart, John Dittes 2008-6-20 14962 Lassen About 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS67993  Lappula redowskii W. L. Jepson 1918-8-2 7765 Lassen Beckwith Pass 1463 Comment
  UC81780  Lathyrus brownii unknown 1892-7-2 Lassen Susanville Comment
  CHSC92742  Lathyrus nevadensis var. nevadensis L. P. Janeway 2005-7-3 8451 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  POM253248  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15147 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  POM253256  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15148 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CAS-BOT-BC321493  Layia glandulosa Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  CDA19744  Layia glandulosa D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC64757  Layia glandulosa Vernon H. Oswald 1995-5-31 6817 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  SBBG22256  Layia glandulosa C. B. Hardham 1961-6-16 7486 Lassen Gold Run Crk, S of Susanville Comment
  UC468843  Layia glandulosa Franklin P. Nutting Lassen Dixey Valley Comment
  CAS-BOT-BC321491  Layia glandulosa Milo S. Baker 1936-6-16 8360 Lassen About 30 mi N of Susanville along Hwy 395. Comment
  SEINET10473885  Layia glandulosa Mary Susan Taylor 1982-5-29 Taylor 4571 Lassen T22N R17E se/ne sec 11. Beckwourth Pass quad. Ca. 500 yds ne of the jct of Hwys 70 & 395 at Hallelula Jct, ca. 23 mi n of Reno. 5000 ft. 1524 Comment
  HSC95338  Lemna minuta Gordon Leppig, J. Cromwell 1997-7-27 621 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC66278  Lemna trisulca Vernon H. Oswald; Lowell Ahart 1996-6-24 7884 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  UC1101286  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-7-21 1051 Lassen 1 mi e of Madeline Comment
  CHSC112402  Lepidium appelianum Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18785 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
  CHSC71871  Lepidium appelianum Vernon H. Oswald; Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Roadside. 1258 Comment
  UC10677  Lepidium dictyotum var. acutidens M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  CHSC4915  Lepidium perfoliatum A. E. Anderson 1967-7-1 69 Lassen North side of road 0.5 mi. e of Murrer Ranch buildings. 1371 Comment
  CHSC99742  Lepidium perfoliatum Lowell Ahart; John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC12812  Lepidium perfoliatum Margaret Williams 1974-7-27 74 -L-48 Lassen Sierra Nevada. Near Hallelujah Junction west of Highway 70. 1493 Comment
  RSA152592  Lepidium perfoliatum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16332 Lassen 13.5 mi. E of Susanville. Comment
  UCD149893  Lepidium perfoliatum V. S. 1971-5-11 s.n. Lassen Honey Lake Wildlife Management Area, field 1. Comment
  UC106733  Leptodactylon pungens T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  UCR17290  Leptodactylon pungens Frank C. Vasek 1975-7-11 750711- 16 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  POM74002  Leptosiphon ciliatus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC27663  Leptosiphon harknessii Robert A. Schlising 1978-7-1 3304 Lassen S of Eagle Lake at east side of Mahogany Lake. 2060 Comment
  RSA0092312  Leptosiphon harknessii Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31424 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  SJSU6034  Leptosiphon harknessii J. W. Tilden 1960-6-27 1507 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  UC1483858  Leucocrinum montanum G. Schoolcraft 1979-5-3 17 Lassen about 1 mi s Ravendale (at intersection of Horse Lake Road and Hwy 395) 1615 Comment
  RSA59892  Lewisia nevadensis E. K. Balls 1950-5-19 14773 Lassen above Ash Creek Public Camp, off road from Adin to Madeline. 1646 Comment
  RSA299613  Leymus cinereus J. T. Howell 1974-7-9 50495 Lassen Susanville; Sierra Nevada 1296 Comment
  UC1924193  Leymus cinereus Debra Valov 2005-8-20 2005237 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1279 Comment
  UCD64234  Leymus cinereus G. Schoolcraft 1993-9-18 2343 Lassen 1 mi. N of Sagehen Summit on W side of Hwy 395. 1706 Comment
  UCD64276  Leymus cinereus J. Earl Coke 1931-6-30 Lassen Lassen County. 1524 Comment
  RSA126619  Leymus condensatus A. Simontacchi 1940-6-30 946 Lassen Halls Flat: 8.6 miles W. of Burgees Spring 1700 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
  CAS-BOT-BC436029  Ligusticum grayi George W. Gillett 1957-7-21 870 Lassen Lassen Volcanic National Park: Cameron Meadow 1950 Comment
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  RSA508635  Lilium washingtonianum Mrs. R. M. Austin 1880-7-20 s.n. Lassen Mount Dyer [SW edge of Lassen Co.] Comment
  CHSC13735  Lilium washingtonianum subsp. washingtonianum S. Villard 1973-7-3 58 Lassen On west side of county road going from Susanville to Plumas National Forest, 2 miles after pavement ends. Comment
  CHSC66265  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  JEPS3468  Limosella aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3354 Lassen Honey Lake Valley; Adobe meadows Comment
  SEINET12765227  Linanthus ciliatus Vernon H. Oswald, Lowell Ahart 1997-6-24 8605 .1 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10).; 0 1655 Comment
  SEINET10496792  Linanthus ciliatus Mary Susan Taylor 1974-1 Taylor 284 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC89741  Linanthus harknessii L. P. Janeway 2004-6-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1124083  Linanthus harknessii A. Simontacchi 1940-5-28 787 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1553388  Linaria genistifolia subsp. dalmatica G. Schoolcraft 1988-8-23 1852 Lassen sw corner of Chestnut and Grand in Susanville Susanville 1310 Comment
  UC867779  Linum lewisii Alice Eastwood Aug 22 1912-Aug 26 1912 1853 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC99539  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2008-6-20 14917 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
  CHSC13605  Lithophragma Lynn R Thomas 1969-4-17 96 Lassen Ca. 200 yds. up hillside e of Rice Canyon Rd., 5 mi n of junction with 'back road to Litchfield'. Ca 12 mi e of Susanville. 1310 Comment
  CAS-BOT-BC435427  Lithophragma glabrum John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 1524 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
  CHSC7762  Lithophragma glabrum Beverly J. Wise 1969-3-4 97 Lassen 80 yds west of Hwy 139, 1.4 mi. north of Susanville. 1584 Comment
  CAS-BOT-BC435428  Lithophragma glabrum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49166 Lassen Elysian Valley northeast of Janesville; Sierra Nevada 1325 Comment
  JEPS47654  Lithophragma parviflorum T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC428415  Lithophragma tenellum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49165 Lassen Elysian Valley northwest of Janesville. 1325 Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1136831  Lithospermum ruderale George A. Fischer and Irwin H. Johnson 1933-7-19 F 262 Lassen Lassen; Sec. 2 1783 Comment
  SEINET208827  Loasaceae Jack Major 1966-6-24 Lassen Above Blue Lake, Warner Mountaind, northeastern Lassen County (ca. 18 miles airline southeast of Likely), California. 1905 Comment
  UC1132218  Lolium temulentum A. Simontacchi 1940-6-13 855 Lassen 3.4 mi wsw Patterson Mountain (Lassen National Forest); Halls Flat Quad., Lassen National Forest Comment
  CHSC87108  Lomatium bicolor var. leptocarpum L. P. Janeway 2001-6-19 7186 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  JEPS105642  Lomatium bicolor var. leptocarpum L. P. Janeway 2001-6-19 7186 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain 1640 Comment
  JEPS96063  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1996-6-24 7855 Lassen 2.5 mi. s. Eagle lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow ca. 0.3 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  JEPS107835  Lomatium dissectum var. multifidum Lowell Ahart, John Dittes 2005-6-2 11930 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
  JEPS118183  Lomatium dissectum var. multifidum Dean W. Taylor 2004-5-11 19059 Lassen 1.5 miles southwest of Constantina along Highway 395 1402 Comment
  SEINET183892  Lomatium leptocarpum L. Contance 1938-6-11 2327 Lassen 5 miles southwest of Susanville 1372 Comment
  HSC81652  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6028 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  JEPS94116  Lomatium macrocarpum Vernon H. Oswald and Lowell Ahart 1998-5-22 9110 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
  UC1479579  Lomatium macrocarpum G. Schoolcraft 1980-4-8 204 Lassen just n. Viewland (w. side of Hwy. 395) 1371 Comment
  CHSC7744  Lomatium nevadense Beverley J. Wise 1969-4-13 116 Lassen 5.6 mi. east on Las. Co. Rd. 338 past the junction with Hwy 395. 1554 Comment
  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
  CHSC101028  Lomatium nevadense var. nevadense John Dittes 2008-5-22 1540 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. 483 Comment
  JEPS96076  Lomatium nevadense var. nevadense Vernon H. Oswald and Lowell Ahart 1996-6-24 7862 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows, ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of the meadow ca. 0.4 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1567383  Lomatium nevadense var. nevadense G. Schoolcraft 1989-5-3 1864 Lassen near Karlo (n.w. corner Secret Valley); Secret Valley 1356 Comment
  UCD127700  Lomatium nevadense var. parishii Grady L. Webster 1989-5-13 7718 Lassen 2.5 mi east of Beckworth Pass. Comment
  LA84783  Lomatium ravenii Tracy Call; Viola Call 1961-5-30 2048 Lassen about 2 mi. S of Ravendale 1462 Comment
  UC1187686 Image available Lomatium ravenii Tracey and Viola Call 1961-5-30 2048 Lassen ca. 2 mi. s. Ravendale 1463 Comment
  UCR183195  Lomatium ravenii Jim Andre, G. L. Clifton 1993-6-2 7716 Lassen Along Hwy 395 c. 25 mi NE of Susanville at Viewland exit, east of Shaffer Mtn 1349 Comment
  POM78599  Lomatium triternatum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC13733  Lomatium triternatum var. macrocarpum C. Freeman 1973-6-27 7 Lassen Collected roadside ca. 1 mi n of the road crossing. Comment
  CHSC29875  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-6 31 Lassen Ca. 1 mi from ELFS where the power lines cross the road. 1572 Comment
  CHSC5018  Lomatium triternatum var. macrocarpum L. G. Bennett 1967-6-24 26 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC117768  Lomatium vaginatum L. P. Janeway; B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  OBI81598  Lomatium vaginatum Tracy Call, Viola Call 1961-5-30 2047 Lassen About 2 miles south of Ravendale 1463 Comment
  CHSC58490  Lonicera conjugialis Vernon H. Oswald 1992-7-3 5050 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1mi N of Cameron Meadow. 1950 Comment
  JEPS13678  Lonicera conjugialis W. L. Jepson 1910-6-11 4119 Lassen Snag Lake 1889 Comment
  SD6574  Lonicera involucrata Mrs. R. M. Austin 1882-8-7 Lassen Hot Spring Valley. Comment
  CHSC25907  Lotus K. R. Stern 1967-7-1 2464 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  GMDRC7741  Lotus corniculatus J. M. Andre, G. Clifton 1993-6-11 33422 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  SEINET10452003  Lotus purshianus Mary Susan Taylor 1974-1 Taylor 281 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS55801  Lotus purshianus var. purshianus Brown and Wieslander 1922-7-30 12 Lassen Martin Springs Eagle Lake Comment
  UC1129240  Lotus purshianus var. purshianus A. Simontacchi 1940-6-30 903 Lassen 2.6 mi w Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  CHSC113075  Ludwigia palustris Lowell Ahart; John Dittes 2013-7-23 18904 Lassen Dry drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC198254  Lupinus John Thomas Howell 1976-7-19 51949 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA0028052  Lupinus John F. Emmel 1996-7-14 1426 Lassen Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle. 1305 Comment
  RSA519408  Lupinus Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
  SEINET7123961 Image available Lupinus andersonii E. A. Bourdo Jr. 1972-1 s.n. Lassen Lassen National Park Comment
  UC619268  Lupinus arbustus J. and H. W. Grinnell 1938-6-13 1100 Lassen Sage flat near Ravensdale; Sage Flat near Ravensdale 1554 Comment
  SEINET10490460  Lupinus arbustus subsp. arbustus Katherine L. Morris 1973-5-25 Morris 211 Lassen 9.6 miles n of milford on us 395 in an area covered with artemisia, purshia, And rabbit bush Comment
  RSA59743  Lupinus arbustus subsp. calcaratus E. K. Balls 1950-5-19 14788 Lassen 14 miles west of Madeline on road from Adin. 1616 Comment
  SEINET10484728  Lupinus arbustus subsp. silvicola A. Arthur Heller 1938-6-4 Heller 15142 Lassen Rather common in the yellow pine forest in open places just w of fredonyer pass E of westwood. Transition life zone 1707 Comment
  UC1553386  Lupinus argenteus G. Schoolcraft 1988-8-24 1856 Lassen 16 mi e Adin; Ash Valley RNA/ACEC 1554 Comment
  CAS-BOT-BC208765  Lupinus argenteus var. heteranthus Margaret Williams; Steven Williams 1974-7-26 74 -L-13 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 - Sierra Nevada 1493 Comment
  SD147580  Lupinus argenteus var. heteranthus John Thomas Howell, Gordon H. True, Margaret Williams 1973-5-12 49232 Lassen On Hwy 395 NW of Doyle on the road to Milford 1280 Comment
  UC1776671  Lupinus argenteus var. heteranthus G. Schoolcraft 1993-6-10 2296 Lassen Along Clark's Valley Road w. of Clark's Valley Ranch 1859 Comment
  SEINET5328130  Lupinus brevicaulis M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-14 86- 40 -1 Lassen Near Hwy 395, at Noble Emigrant Trail Sign, 7 rd miles N of Litchfield 1524 Comment
  NY746960  Lupinus breweri H. D. D. Ripley 1943-6-13 5709 Lassen 10 miles south of Milford 1768 Comment
  HSC14808  Lupinus caudatus M. T. Milligan 1964-8-6 207 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  SD43491  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford 1264 Comment
  UCR18734  Lupinus caudatus Frank C. Vasek 1975-7-11 750711- 15 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  RSA39736  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford. 1265 Comment
  SEINET10452632  Lupinus caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  SEINET12161686  Lupinus caudatus N. E. Heiken 1978-1 57 Lassen SE of Eagle L. T31N R11E Sec22 1554 Comment
  SEINET10490607  Lupinus caudatus subsp. caudatus Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 863 Lassen Collected on road bank 24 mi n of calif. State line on hwy 395. Comment
  SEINET10490707  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11919 Lassen Collected on rolling gravelly slopes, in spots of deeper soil and also in Runoff areas from the hwy. Comment
  POM23529  Lupinus confertus Marcus E. Jones 1897-6-16 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA339168  Lupinus confertus Margaret J. Williams 1983-7-31 s.n. Lassen Roadside near Janesville. 1280 Comment
  SEINET10940170  Lupinus confertus Thomas W. Nelson, Jane P. Nelson 1981-7-17 Nelson 6735 Lassen Along State Route 395, 22 mi S of Susanville, California, at milepost marker 46.80. Sagebrush scrub. Comment
  UCR18740  Lupinus corymbosus Frank C. Vasek 1975-7-11 75011- 21 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  JEPS95873  Lupinus grayi Vernon H. Oswald and L. Ahart 1999-6-9 9759 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass: T29N R10E NW1/4 Sect. 22, 5400 ft elevation, mixed coniferous forest 1645 Comment
  UCD108200  Lupinus latifolius var. columbianus Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mounains, Modoc National Forest, northeastern part of county (ca. 18. miles airline southeast of Likely). Comment
  SEINET6655529  Lupinus laxiflorus var. calcaratus Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale.; 0 1830 Comment
  JEPS65081  Lupinus lepidus var. confertus W. L. Jepson Aug. 1918 7798 Lassen Raker Ranch near Buntingville; Raker Ranch naer Buntingville 1219 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
  UC1035886  Lupinus lepidus var. confertus Annie M. Alexander and Louise Kellogg 1946-8-15 5159 Lassen Janesville Comment
  SEINET8051636  Lupinus lepidus var. confertus G. Schoolcraft 1992-8-11 2246 Lassen Along Highway 395 near inters. of Janesville Road 1280 Comment
  CHSC14189  Lupinus lepidus var. lobbii M. S. Taylor 1974-7-10 271 Lassen Collected roadside, ca. 3 mi s of Gallatin Beach, ca. 3 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC99135  Lupinus lepidus var. lobbii Lowell Ahart; John Dittes 2008-6-19 14886 -A Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC5290  Lupinus lepidus var. sellulus 1944-2-7 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  JEPS114625  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
  JEPS88206  Lupinus lepidus var. sellulus Vernon H. Oswald and Lowell Ahart 1996-6-24 7867 Lassen Papoose Meadows located 0.5 mi e of Eagle Lake Rd (A!), and 2.5 mi s of Eagle Lake, 0.2 mi s of the cabins Papoose Meadows; Modoc Plateau, Papoose Meadows 1633 Comment
  POM312876  Lupinus leucophyllus Verne Grant, Irving Schneider 1947-8-1 8232 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  SEINET9185950 Image available Lupinus leucophyllus Anthony Baniaga 2011-1 437 Lassen Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE 1718 Comment
  UC199306  Lupinus microcarpus var. microcarpus Franklin P. Nutting Lassen Dixey Mts. South side Comment
  CAS-BOT-BC202119  Lupinus nevadensis Gary Schoolcraft 1986-4-28 1526 Lassen Lower W. slopes of Ft. Sage Mtns. 1432 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
  RSA18697  Lupinus onustus Marcus E. Jones 1887-06 s.n. Lassen Susanville Comment
  SEINET10485916  Lupinus sellulus var. lobbii Duane Isely, I. Isely 1971-7-12 Isely 11383 Lassen Ca 1 mi from state #44, road to bogard campground, lassen national forest (30 Mi nw of susanville). Sagebrush opening in woodlands; fugitive against rocks Or by sagebrush; arising from vertical rhizones from subterranean caudex; Corolla dull mauve; keel tip light. 1676 Comment
  HSC76485  Lupinus sellulus var. sellulus B. J. Cox 1971-6-11 3186 Lassen 3 mi. E of Westwood, Hwy. 36 1608 Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  CDA40729  Lycopus uniflorus Gordon Leppig, J. Cromwell 1997-7-27 625 Lassen Modoc National Forest. Blue Lake Ranch. 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
  CHSC117512  Lythrum hyssopifolia Lowell Ahart; John Dittes 2016-7-13 21125 Lassen Southwest wedge of the dirt dam, 30 yards east of Stonebreaker Road, 0.6 miles south of County road A-2, 5.3 miles (air) east if Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  CHSC66727  Lythrum portula Vernon H. Oswald; Lowell Ahart 1996-8-1 8104 Lassen Mountain Meadows Reservoir of Westwood. On shore of reservoir NE of Indian Ole Dam. 1539 Comment
  POM253193  Madia bolanderi A. A. Heller 1937-9-1 15342 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  CHSC23515  Madia elegans Wayne O. Baum 1971-7-5 71 -16 Lassen S. slope of Gallatin Peak. 2011 Comment
  UC296085  Madia elegans E. B. Babcock and J. L. Collins 1926-7-21 88 Lassen near Peter Lassne's grave; Susanville Comment
  UC89447  Madia elegans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC1053319  Madia glomerata J. M. Tucker 1950-7-25 1975 Lassen road from Pittville 33 mi nw Susanville Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  JEPS128415  Maianthemum stellatum Catherine Bauer with Ellen Bauer Benson 2017-8-16 21 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC186080  Malacothrix glabrata unknown 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CAS-BOT-BC179097  Malva neglecta Mrs. H. C. Cantelow 1940-5-31 4011 Lassen E. of Bieber Comment
  HSC23508  Marrubium vulgare A. E. Anderson 1967-7-11 78 Lassen Around Bly Tunnel outlet, 1 mi. E of rd. to Eagle Lake Biological Station 1555 Comment
  CAS-BOT-BC71144  Marsilea Clarence R. Quick 1962-6-17 62 -26 Lassen Swains Hole, south of Blacks Mountain Experimental station 1554 Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  RSA0011558  Marsilea vestita R. F. Thorne, Larry E. DeBuhr 1975-8-22 46994 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC99294  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  JEPS93831  Matricaria discoidea Vernon H. Oswald and Lowell Ahart 1998-6-4 9138 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  CHSC112767  Matricaria occidentalis Lowell Ahart; John Dittes 2013-7-22 18863 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  CAS-BOT-BC281027  Melica stricta Clare B. Hardham 1969-8-28 s.n. Lassen W of Janesville Comment
  SCFS2161  Melilotus albus C. Meek 1969-7-8 77 Lassen On roadside along Hwy 139, 2 mi E of Ravenville Rd. 1524 Comment
  SEINET10452609  Melilotus officinalis Mary Susan Taylor 1982-6-12 Taylor 4654 Lassen T22N R17E ne sec 11. Beckwourth Pass quad. NW corner of Hallaleuja Jct, jct of Hwys 70 and 395, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  CHSC106171  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CHSC48604  Mentzelia albicaulis Vernon Oswald 1986-5-28 2055 Lassen Rd. 201 on the w side of Eagle Lake 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  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
  SD130461  Mentzelia albicaulis John Thomas Howell 8-9 Jul 1974 50466 Lassen Susanville Comment
  JEPS107445  Mentzelia congesta Lowell Ahart, John Dittes 2005-6-1 11887 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
  CHSC29933  Mentzelia dispersa Robin L. Ondricek 1978-6-22 67 Lassen In rocky soil among Jeffrey Pines at the n end of Mahogany Lake. 2057 Comment
  JEPS107292  Mentzelia dispersa Lowell Ahart, John Dittes 2005-6-1 11872 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS94543  Mentzelia dispersa Vernon Oswald and Lowell Ahart 1997-6-24 8603 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  UC506973  Mentzelia dispersa George A. Fischer, Irwin H. Johnson 1933-7-12 F 229 Lassen Lassen Forrest, Patterson Flat 1737 Comment
  POM83245  Mentzelia montana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SD8331  Micranthes odontoloma Mrs. R. M. Austin 1882-8-1 Lassen Lassen Co Comment
  SEINET5345127  Micromonolepis pusilla A. Tiehm 1980-1 5757 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CHSC66235  Microseris nutans Vernon H. Oswald; Lowell Ahart 1996-6-24 7866 .1 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  CHSC6206  Microsteris gracilis C. Palmiter 1946-6-20 Lassen Grasshopper Valley. Eagle Lake. 1624 Comment
  JEPS120864  Microsteris gracilis Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18741 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
  RSA122924  Microsteris gracilis subsp. humilis L. R. Short 1936-5-7 S- 343 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  NY963937  Microsteris gracilis var. humilior V. E. Grant 1956-5-18 9802 Lassen About 8 miles south of Madeline 1280 Comment
  UC24031 Image available Miltitzia glandulifera var. californica Mrs. C. C. Bruce 1898-6-1 21354 Lassen Madeline Plains; ; Madeline Plains, Lassen Co. Comment
  UCR201581  Mimulus Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  UC1609383  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-14 5523 Lassen ca. 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore of lake, upper beach between the road and the lake); Eagle Lake 1566 Comment
  UCD122430  Mimulus breviflorus S. E. Schoenig 1998-7-5 98- 71 Lassen East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track. 1749 Comment
  RSA505419  Mimulus breviflorus Rimo Bacigalupi, S. Galen Smith 1957-6-28 5998 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline 1616 Comment
  UC1037226  Mimulus breweri Leo Whitney 1933-8-14 1596 a Lassen ca. 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 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
  RSA716144  Mimulus floribundus L. Ahart, John Dittes 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CHSC117277  Mimulus guttatus Lowell Ahart; John Dittes 2016-7-15 21224 Lassen On the west side of the road about 600 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC725552  Mimulus microphyllus A. A. Heller 1941-6-26 16232 Lassen ridge w Nieubieber Comment
  JEPS63626  Mimulus nanus var. jepsonii G. S. Crew and C. S. Robinson 1927-6-25 23 Lassen near Wetwood Junction; Lassen Forest, Norval Flat 1747 Comment
  JEPS85744  Mimulus nanus var. mephiticus Roy E. Buck, Robert A. Price 1988-6-26 1032 Lassen ca. 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  RSA164351  Mimulus nanus var. mephiticus Clare B. Hardham s.n. Lassen Gold Run Creek south of Susanville. Comment
  UCD149990  Mimulus nanus var. mephiticus William Anderson 1963-6-9 s.n. Lassen Honey Lake Valley. Comment
  POM43828  Mimulus nanus var. nanus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  RSA536392  Mimulus pygmaeus Beth Corbin, Steve Klukkert 1991-6-11 622 Lassen Burgess Meadow drainage, 3/4 mile NE of Harvey Station, 7 miles NE of USFS Bogard Work Center. 1690 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
  POM43553  Mimulus suksdorfii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  HSC22951  Monardella odoratissima John Pratt 1970-6-21 30 Lassen 1738 Comment
  UC1137693  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen National Forest 1722 Comment
  UC773899  Monardella odoratissima subsp. glauca L. R. Short and Wm. Gansberg 1936-7-3 S- 467 Lassen Burgess Spring Experiment Range Lassen Forest 1847 Comment
  UCR244066  Monardella odoratissima subsp. glauca Jim Andre, G. L. Clifton 1993-6-9 19692 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
  CHSC29873  Monardella odoratissima subsp. pallida Robin L. Ondricek 1978-6-27 74 Lassen 1977 Burn, .1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  RSA370315  Monolepis pusilla A. Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10351 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
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Feb 14 2017
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC68757  Montia chamissoi Vernon H. Oswald; Lowell Ahart 1997-5-27 8498 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. In wet gravel on the flood plain of a small creek paralleling the road. 1546 Comment
  HSC95205  Montia chamissoi Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 542 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1586593  Montia dichotoma Vernon H. Oswald 1991-5-28 4618 Lassen 5 mi ne of Bieber (Wayman Barn at the w end of Hunt Road, Ash Creek Wildlife Area, flat east of barn); Ash Creek Wildlife Area 1264 Comment
  CHSC77226  Montia fontana G. Schoolcraft 1995-5-16 2478 Lassen 2 mi. east of Bull Flat. Growing in spring. 1615 Comment
  UC1609172  Montia linearis Vernon H. Oswald and Lowell Ahart 1993-6-28 5611 Lassen ne of Poiston Lake (on the sse flank of Harvey Mountain, n of Hwy 44 on Rd, 33N06, nne of Burgess Meadow); Harvey Mountain 1798 Comment
  UC1024657  Muhlenbergia andina Leo Whitney 1934-7-24 2195 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  CAS-BOT-BC275082  Muhlenbergia richardsonis Malcom A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline Comment
  SJSU4296  Muhlenbergia richardsonis J. W. Tilden 1960-6-27 1511 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  SACT001607  Muhlenbergia squarrosa Malcolm Nobs, S. Smith 1949-7-21 Lassen Shallow marshy stream from springs, 4 miles north of Madeline. Comment
  CHSC71134  Muilla transmontana Vernon H. Oswald; Lowell Ahart 1998-5-22 9133 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  CHSC7657  Muilla transmontana Beverley J. Wise 1969-5-3 145 Lassen 4.7 mi. east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1615 Comment
  HSC63965  Muilla transmontana Teresa Prendusi 1980-5-8 Lassen Balls Canyon N of Shaffer Mtn. 6 mi. W of Hwy. 395 1372 Comment
  CAS-BOT-BC392253  Myosurus apetalus G. Schoolcraft 1993-6-10 2290 Lassen N. of Clark's Valley Rd. e. of Red Rock Lake 1828 Comment
  UCD55284  Myosurus apetalus Ellen Dean; Gary Schoolcraft 2006-5-16 3103 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
  UC1608993  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-5-12 5392 Lassen 0.6 mi e Shasta County Line (n side of Hwy 44, between Old Station and Poison Lake) 1645 Comment
  CHSC112462  Myosurus minimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18726 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS114645  Myosurus minimus Lowell Ahart, John Dittes 2008-6-20 14940 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET3095964 Image available Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1698 Comment
  JEPS28701  Myriophyllum sibiricum George W. Gillett 1957-7-28 920 Lassen E shore Butte Lake, Lassen Volcanic National Park. 1844 Comment
  RSA323647  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  UC1101501  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-9-7 8398 Lassen Susan River by Highway 395 at Bridge 7-34, 1/2 mi W of Litchfield. Comment
  JEPS107305  Nama aretioides var. californica Lowell Ahart, John Dittes 2005-6-1 11886 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
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Jun 18 2007
  RSA0043136  Nama aretioides var. californica Christopher Davidson 1975-6-7 2760 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA0084057  Nama aretioides var. californica Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  POM126779  Nama densa Milo S. Baker 1894-7-25 s.n. Lassen Eagle Lake. Comment
  JEPS19815  Navarretia breweri Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 -a Lassen 7 mi n Madeline (about 1 mi n of Sage Hen siding on S.P Railroad, just e of U.S. Highway 395) 1676 Comment
  JEPS87403  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
  UC1537491  Navarretia breweri Gordon H. True Jr. 1938-7-9 910 Lassen near Termo 1219 Comment
  CDA40081  Navarretia breweri T. C. Fuller 1963-6-11 10658 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  HSC23507  Navarretia breweri W. Lessig 1967-7-1 11 Lassen 10 mi. N of Susanville on Hwy. 139 1829 Comment
  UCD37483  Navarretia breweri Beecher Crampton 1960-6-21 5744 Lassen Lassen County, 15 miles northeast of Susanville, Horse Lake Mountain Range. 1706 Comment
  CHSC29885  Navarretia capillaris Robin L. Ondricek 1978-7-5 89 Lassen At the edge of the trees on the ne side of Mahogany Lake. 2057 Comment
  SEINET200215  Navarretia divaricata C. McMillan 1949-6-15 1541 Lassen Five miles west of Bieber Comment
  SEINET3894760  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -065 Lassen Along Hwy 299 about 9.4 miles east of jct with Hwy A2 and 1.4 west of jct with Hwy 139, southwest of Adin.; 0 Comment
  SEINET3894761  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -073 Lassen Nubieber. Adjacent to New Cemetary Road (1.1 miles west of Babcokc Rd in Nubieber) just beyond its jct with Hwy 299, between Hwy and road.; 0 Comment
  UCD32653  Navarretia intertexta subsp. propinqua Beecher Crampton 1954-7-5 2047 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CHSC27670  Navarretia leptalea subsp. bicolor Robert A. Schlising 1978-7-9 3312 Lassen South of Eagle Lake. Area between Papoose Meadows and Eagle Lake Road. Comment
  JEPS69637  Navarretia leptalea subsp. leptalea Brown and Wieslander 1922-8-20 86 Lassen Martin Sprs. Eagle Lake Comment
  CAS-BOT-BC230335  Navarretia leucocephala Mrs. H. C. Cantelow 1940-5-31 4144 Lassen E of Bieber Comment
  CHSC117270  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2016-7-15 21213 Lassen About 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) notheast of Bieber, Big Valley. 1261 Comment
  CHSC34342  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5853 Lassen Ca. 0.2 mi n of Hwy. 44, on Pittville Rd. Comment
  CHSC34344  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5868 Lassen E end of Champs Flat. Comment
  CHSC99736  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2008-6-20 14952 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  HSC63964  Navarretia leucocephala subsp. minima Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  UC1112252  Navarretia leucocephala subsp. minima R. C. Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (Highway 395); Madeline Plains 1615 Comment
  UC1137773  Navarretia linearifolia subsp. linearifolia August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest, Black's Mtn 1706 Comment
  SEINET10496833  Navarretia propinqua Mary Susan Taylor 1974-1 Taylor 277 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET10464780  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 Dempster 1673 Lassen Gold Run Creek about 4 miles southwest of junction with Richmond Road, south ofSusanville Comment
  CHSC93691  Nemophila parviflora var. austiniae Lowell Ahart; John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC1137711  Nemophila parviflora var. austiniae L. R. Short and J. Warren 1936-6-9 S- 404 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1844 Comment
  CAS-BOT-BC231218  Nemophila parviflora var. austiniae Philip A. Munz 1947-5-18 11860 Lassen Fredonyer Forest Campground on Highway 36, W of Susanville 1508 Comment
  JEPS118279  Nemophila pedunculata Lowell Ahart, John Dittes 2011-6-20 17481 Lassen On old gopher mounds, meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS1932  Nemophila pedunculata L. Constance 1938-6-10 2323 Lassen 2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); McKenzie Meadows, sw of Fredonyer Pass 1524 Comment
  UC1609375  Nemophila pedunculata Vernon Oswald and Lowell Ahart 1993-5-12 5389 Lassen 1.6 mi se Pittsville Rd. (Hwy 44 between Poison Lake and A21 (to Westwood)); betw Poison Lake and A21 1719 Comment
  UC791038  Nemophila pedunculata Calvin McMillan and Malcolm A. Nobs 1949-6-15 1539 Lassen 5 mi w Nubieber; w of Nubieber Comment
  CHSC106075  Nicotiana attenuata Lowell Ahart; John Dittes 2010-7-31 17022 Lassen On the north side of the road, about 40 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  JEPS124603 Image available Nicotiana attenuata G. R. Ostrander 1965-7-12 256 Lassen Growing along U. S. 395 15 miles N. of the junction of Calif. 70 & U. S. 395. Comment
  CDA18261  Nothocalais alpestris G. D. Barbe 1974-8-2 1923 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CHSC54175  Nothocalais troximoides Vernon H. Oswald 1991-5-28 4627 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. East of the barn. 1264 Comment
  HSC68183  Nothocalais troximoides J. P. Smith, J. O. Sawyer 1971-5-23 4658 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  RSA0009448  Nuphar lutea subsp. polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS124837 Image available Oenothera deltoides J. Yamanaka 1965-7-12 122 Lassen U. S. Highway 395, 2.6 miles N. of Milford Sandy soil. Comment
  CHSC71093  Oenothera deltoides subsp. piperi Vernon H. Oswald; Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. On roadside banks along this section of highway. 1255 Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 Comment
  UC174846  Oenothera elata subsp. hirsutissima T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  UC874023  Oenothera flava subsp. flava C. L. Hitchcock 1940-5-26 6642 Lassen overflow of river 1 mi w Bieber; Pitt River Comment
  UC157874  Olsynium douglasii var. douglasii Milo S. Baker 1890-1 Lassen Milford Comment
  CAS-BOT-BC350046  Oreostemma alpigenum var. andersonii John Thomas Howell 1934-7-9 12515 Lassen Bridges Creek Spring Comment
  UC2027324  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen National Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mountain quadrangle Comment
  CHSC10945  Orobanche corymbosa K. D. Cox 1971-7-5 144 Lassen Approx. 1/4 mi. NW of main campus L.F.S. 1554 Comment
  UC1136756  Orobanche corymbosa subsp. corymbosa L. R. Short and J. Warren 1936-6-30 S- 465 Lassen NW of Eagle Lake, Burgess Spring Experiment Range. Comment
  UC1609174  Orobanche uniflora subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5615 Lassen N of Highway 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. Comment
  HSC24668  Orobanche vallicola John Pratt 1970-7-5 64 Lassen 1250 Comment
  UC1609287  Orthocarpus cuspidatus subsp. cryptanthus Vernon H. Oswald and Lowell Ahart 1993-6-28 5604 Lassen Rd 35N04 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley, ne of Poison lake 1725 Comment
  POM44258  Orthocarpus hispidus Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  UCR92119  Oxytheca dendroidea subsp. dendroidea G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  CAS-BOT-BC316858  Packera eurycephala var. eurycephala C. C. (Mrs.) Bruce 1898-6-1 2176 Lassen Shumway Comment
  CAS-BOT-BC316860  Packera eurycephala var. eurycephala Alice Eastwood; John Thomas Howell 1940-6-11 7968 Lassen Eastern Fall River Valley Comment
  UC35937 Image available Packera indecora M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
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Sep 26 2006
  CHSC5217  Packera multilobata A. Santos 1946-6-17 Lassen Eagle Lake. Mr. Fredonyer Rd. 2072 Comment
  HSC18106  Paeonia H. E. Parks, S. T. Parks Jun 1928 223 Lassen Lassen National Park, Drakesbad 1768 Comment
  CHSC84341  Panicum capillare Lowell Ahart 2003-8-17 10517 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  UCD89524  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen Susanville. 1295 Comment
  UCD89807  Panicum capillare subsp. hillmanii John Thomas Howell 1973-7-10 49808 Lassen Doyle. Comment
  SEINET3133156  Panicum lanuginosum var. fasciculatum R. W. Spellenberg 1965-7-15 1229 Lassen Lassen Volcanic NP, Devil's Kitchen Comment
  CHSC42176  Pascopyrum smithii C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. 2194 Comment
  RSA294197  Pectocarya penicillata A. Tiehm 1980-5-29 5753 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  JEPS97422  Pectocarya setosa Vernon H. Oswald and L. Ahart 1995-6-19 6892 Lassen T30N R16E NW1/4 NW1/4 Sect. 7, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395 1383 Comment
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UC718015  Pedicularis attollens David Keck 1944-7-8 5443 Lassen 2 mi e of Westwood (in meadow leaning down to Mountain Meadows Reservoir); Sierra Nefada 1524 Comment
  JEPS94553  Pedicularis groenlandica Vernon Oswald and Lowell Ahart 1997-6-24 8652 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC41744  Pedicularis groenlandica M. S. Baker and Frank Nutting 1894-7-12 Lassen Comment
  UC1136981  Pedicularis semibarbata L. R. Short and J. Warren 1936-6-9 S 410 Lassen Burgess Spr. Exp. Range Lassen National Forest 1859 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
  JEPS7229  Penstemon Jos. Grinnell 1928-6-26 Lassen Cinder Cone, SE slope 2103 Comment
  CHSC12945  Penstemon cinicola K. R. Stern 1974-6-26 5852 Lassen Vicinity of Cold Spring, e of Butte Lake, Cinder Cone trail, Lassen Volcanic National Park. 1859 Comment
  SBBG85835  Penstemon deustus F. W. Pennell 1940-6-9 25768 Lassen below basaltic ridge, hill W of Susanville 1371 Comment
  POM252931  Penstemon deustus subsp. sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass on Hwy 36. 1646 Comment
  RSA516352  Penstemon deustus subsp. sudans Barbara Ertter 1987-6-16 7178 Lassen Skeedaddle Mtns on NE side of Honey Lake, below ridge 1 mile W of Hot Springs 1829 Comment
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Mar 25 2010
  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
  CHSC61241  Penstemon deustus var. pedicellatus P. V. Caldwell 1972-6-15 222 Lassen 10 ft n of Lecture Lab. entrance. Eagle Lake Field Station. 1554 Comment
  HSC81803  Penstemon deustus var. pedicellatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6035 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
  CHSC29258  Penstemon gracilentus J. D. Prouty 1978-6-28 11 Lassen E of Eagle L., at W shore of Lower Dy L. Comment
  RSA668193  Penstemon gracilentus Karl Vincent, Charlotte A. Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn. Along CA A1 at Eagle Lake Summit, ca 7.6 mi N of jct. CA 36, ca 7 air miles NW of Susanville. 1933 Comment
  NY603846  Penstemon humilis var. humilis N. H. Holmgren 1978-6-11 8927 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 miles) northeast of Rye Patch Canyon summit, 21 km (13 miles) airline distance east-southeast of Ravendale. 1700 Comment
  CHSC68882  Penstemon janishiae Vernon Oswald; Lowell Ahart 1997-6-24 8644 Lassen South of Susanville near the small pool on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  UC1523811  Penstemon janishiae Gary Schoolcraft 1983-5-31 963 Lassen along Hwy 139 near Upper McBride Sp; near Upper McBride Sp. 1584 Comment
  POM252804  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen West of Westwood. Comment
  SEINET11262107  Penstemon neotericus Karl A. Vincent, Charlotte A. Labbe 1986-7-19 4381 Lassen Sierra Nevada, Roop Mtn. Along CA A1 ca 4 mi NW of jct CA36, site ca 6 air mi WNW of Susanville.; 0 1737 Comment
  NY627253  Penstemon neotericus K. A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mountain, along CA 36, ca. 1 mile east of jct. CA A21 on east side of Westwood. 1524.0 Comment
  NY627256  Penstemon neotericus K. A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mountain; along CA A1, ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  NY627268  Penstemon neotericus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  UC887182  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen between Chester and Westwood; between Chester and Westwood 1524 Comment
  CAS-BOT-BC239221  Penstemon newberryi var. berryi Clare B. Hardham 1969-8-28 17449 Lassen West of Janesville Comment
  CHSC4877  Penstemon roezlii R. Carter 1967-6-23 542 Lassen Growing ca. 5 yds off N side rd. Comment
  CHSC4912  Penstemon roezlii A. E. Anderson 1967-6-24 27 Lassen Abundant in soil on roadside leading to Murrer's Meadow, 1 mi. east of junction of road to Eagle Lake Biological Station. 1554 Comment
  CHSC4938  Penstemon roezlii W. Lessig 1967-6-24 5 Lassen 3 mi se Eagle Lake Biology Station, above Murrer's Meadow. 1524 Comment
  CHSC59571  Penstemon roezlii Mary Meyer 1980-5-20 524 Lassen Along ridge above Secret Creek. 1432 Comment
  JEPS23794  Penstemon roezlii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7138 Lassen Sandy playa beside U.S. 395 one-fourth mi s of junction of road to Smoke Creek; s of junction of rd to Smoke Creek 1341 Comment
  NY650100  Penstemon roezlii G. Schoolcraft 1982-6-16 701 Lassen North of Shinn Ranch 1548.4 Comment
  NY650115  Penstemon roezlii F. W. Pennell 1940-6-9 25755 Lassen Route 395, 5 miles north of Madeline 1676.4 Comment
  NY650137  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass 1615.4 Comment
  POM44788  Penstemon roezlii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA339998  Penstemon roezlii Noel Holmgren, Patricia K. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from US Hwy 395 via Rye Patch canyon, 24 km (15 mi) airline distance southeast of Ravendale. 1585 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-BC239506  Penstemon rydbergii var. oreocharis L. B. Barlow 1967-7-4 89 Lassen 5 mi. south of Eagle Lake Biological Sation on Gallatin Beach Road 1737 Comment
  CHSC37348  Penstemon rydbergii var. oreocharis Cindy Prouty 1978-7-5 14 Lassen E shore of Mohagany L., S of Eagle L. 2060 Comment
  CHSC4791  Penstemon rydbergii var. oreocharis R. Carter 1967-7-7 582 Lassen Collected at W end of reservoir. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  NY650948  Penstemon rydbergii var. oreocharis H. D. D. Ripley 1943-6-13 5706 Lassen 8 miles south of Milford 1859.3 Comment
  RSA59553  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen 0.5 mi N of turnoff to Heir, Hwy 395, between Milford and Doyle. 1280 Comment
  RSA702452  Penstemon rydbergii var. oreocharis L. P. Janeway 2004-6-26 8161 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC1012182  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36 road to Coppervale R.S., e Westwood; e of Westwood 1493 Comment
  UC696714  Penstemon rydbergii var. oreocharis David D. Keck 1938-6-22 15182 Lassen one mi e Westwood; e of Westwood 1524 Comment
  UCSB6193  Penstemon rydbergii var. oreocharis Heller, A. 1938-6-23 Lassen East of Westwood 1493 Comment
  SBBG128900  Penstemon rydbergii var. oreocharis L. Ahart, J. Dittes 2008-6-20 14919 Lassen ca. 100 yards SW of where the levee rd crosses Big Valley Canal in Big Valley, ca. 4 mi (air) NE of Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CHSC12482  Penstemon speciosus Carol Weld 1969-6-20 14 Lassen Road to Dean's Meadow from Five Corners. 1889 Comment
  HSC81485  Penstemon speciosus Thomas W. Nelson, Jane Nelson 1980-7-6 6018 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  JEPS11507  Penstemon speciosus Milo S. Baker 1890-1 Lassen Honey Lake Valley Comment
  NY661007  Penstemon speciosus A. J. Cronquist 1959-6-16 8455 Lassen 26 miles northwest of Reno Comment
  POM195125  Penstemon speciosus D. D. Keck 1930-7-23 950 Lassen Susanville. 1280 Comment
  RSA121810  Penstemon speciosus L. R. Short, J. Warren 1936-6-26 S- 357 Lassen Burges Spr. Exp. Range. 1845 Comment
  NY660820  Penstemon speciosus H. D. D. Ripley 1943-6-13 5672 Lassen South of Constantia 1463.0 Comment
  NY661042  Penstemon speciosus P. A. Munz 1947-5-19 11877 Lassen Highway 395, 3.5 miles south of Ravendale 1615.4 Comment
  UC1012214  Penstemon speciosus Francis W. Pennell 1940-7-23 26254 Lassen Route 395, 2 mi n of junction with Route #24 (ne of Plumas); ne of Plumas 1524 Comment
  UCSB11863  Penstemon speciosus Haller, John 1961-6-26 Lassen Hat Creek- Susanville Road, about 14 mi E of Calif. 89 at Subway Cave 1737 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
  OBI75899  Penstemon sudans Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 478 Lassen Lassen Natl Forst. Hwy 36, ca. 1/4 mi E of "Fredonyer Pass Winter OHV Parking Lot" Fredonyer Pass quad T29N R10E sec 2 NW of SW 1950 Comment
  UC1012184  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36 hill w Susanville; hill w of Susanville 1371 Comment
  UC423673  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  SEINET5323636 Image available Penstemon sudans N. H. Holmgren, P. K. Holmgren 1978-6-12 8937 Lassen Rye Patch Canyon, 4.3 km (2.7 mi) E of U.S. Hwy 395, just above Ramhorn Campground, 14.5 km (9 mi) airline distrance SE of Ravendale 1740 Comment
  OBI82794  Penstemon venustus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3935 Lassen E of Freydonyer Pass. 6.2 rd mi west on Hwy 36 after jct with Hwy 44. S side of rd. Ca 11 air mi wsw of Susanville.; 0 1659 Comment
  RSA519197  Penstemon venustus Karl Vincent 1987-8-5 4500 Lassen Sierra Nevada, SE side of Fredonyer Butte; about 30 plants, some up to 40 inflorescences, on steep gravelly roadbank along N side of Ca 36 ca. 11.5 mi WSW of Susanville, E of Fredonyer Pass 1585 Comment
  CHSC5921  Perideridia bolanderi J. E. Wolf 1946-6-23 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  JEPS107969  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
  POM82581  Perideridia bolanderi subsp. bolanderi Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1087229  Perideridia bolanderi subsp. bolanderi Peter H. Raven and Otto T. Solbrig 1958-6-16 13252 Lassen 4.5 mi e Westwood Comment
  RSA723862  Perideridia bolanderi subsp. bolanderi David H. French 1968-6-3 2882 Lassen N of Honey Lake, W side of Highway 395, 7.4 miles NE of Litchfield Comment
  SEINET12120566  Perideridia gairdneri Unknown 1978-1 3 Lassen Papoose Creek, SE corner of Eagle L 1585 Comment
  SEINET11153899  Perideridia gairdneri subsp. borealis M. S. Baker July 31 (no year) s.n. Lassen Silver Lake. Comment
  JEPS117580  Perideridia lemmonii Lowell Ahart, John Dittes 2010-7-31 16991 Lassen On the south side of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  OBI48093  Peritoma platycarpa Rhonda Riggins 1989-4-27 1638 Lassen Wash through volcanic boulder pavement, US395, 8.4 mi N. Litchfield, 26.6 mi S Rav endale 1311 Comment
  CHSC59095  Persicaria lapathifolia Vernon H. Oswald; Lowell Ahart 1992-8-25 5189 Lassen Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  CHSC5259  Phacelia adenophora 1944-6-21 Lassen Eagle Lake shore. 1584 Comment
  CHSC704  Phacelia adenophora A. Santos 1946-6-20 Lassen Grasshopper Valley. 1615 Comment
  JEPS79215  Phacelia adenophora L. R. Heckard with R. C. Bacigalupi 1980-6-11 5264 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield, flat area and wash between railroad and hwy) 1463 Comment
  OBI48096  Phacelia adenophora Rhonda Riggins 1989-4-27 1643 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  RSA38631  Phacelia adenophora P. A. Munz 1947-5-19 11871 Lassen 19 miles south of Ravendale. 1341 Comment
  RSA722579  Phacelia adenophora R. R. Halse 1975-6-20 1198 Lassen Madeline Plains, along Lassen County Road 508, 1.5 miles east of Termo. 1590 Comment
  UC735114  Phacelia adenophora Lincoln Constance 1946-7-3 3100 Lassen 16 mi w Termo; Grasshopper Valley 1676 Comment
  POM72872  Phacelia adenophora C. C. Bruce 1898-06 2198 Lassen Madeline Plains. Comment
  CHSC71089  Phacelia bicolor var. bicolor Vernon H. Oswald; Lowell Ahart 1998-5-22 9132 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  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
  JEPS78146  Phacelia hastata Gary W. Zamzow 1972-7-19 89 Lassen Hwy 139 15 mi s Adin; Willow Creek campground 1524 Comment
  UC1924219  Phacelia hastata Debra Valov 2004-6-9 2004257 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  CDA40418  Phacelia hastata J. T. Howell 1934-7-8 12480 Lassen Champ s Flat. 0 Comment
  JEPS107806  Phacelia hastata subsp. compacta Lowell Ahart, John Dittes 2005-6-2 11950 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction 1498 Comment
  CHSC5260  Phacelia heterophylla subsp. virgata A. Santos 1946-6-25 Lassen Spalding's Eagle Lake Resort. 1558 Comment
  RSA638996  Phacelia heterophylla subsp. virgata Michael A. Vincent 1999-6-9 8585 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  RSA122630  Phacelia humilis var. humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spr. Exp. Range. 1837 Comment
  CHSC58500  Phacelia hydrophylloides Vernon H. Oswald 1992-7-3 5060 Lassen Lassen Volcanic National Park. Trail between Juniper and Horseshoe lakes, on the W side of the ridge between the lakes. 2078 Comment
  CHSC12417  Phacelia linearis Anne Linda Brisk 1969-6-25 20 Lassen Growing behind Shepherd's Hall at ELBS. 1554 Comment
  CHSC4813  Phacelia linearis R. Carter 1967-7-7 576 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  CHSC726  Phacelia linearis F. Hughes 1935-6-2 Lassen Near Susanville. 1524 Comment
  JEPS1192  Phacelia linearis Mrs. C. C. Bruce June 1898 2190 Lassen Madaline Plains Comment
  RSA712931  Phacelia linearis L. P. Janeway 2005-7-4 8463 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  RSA149122  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-16 16530 Lassen 0.8 mile west of summit of Big Valley Pass. Comment
  RSA303850  Phacelia linearis Jim R. Shevock 1972-5-20 1819 Lassen Highway 395, Honey Lake. 1311 Comment
  HSC13645  Phacelia mutabilis M. T. Milligan 1964-7-16 134 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC506976  Phacelia mutabilis George A. Fischer, Irwin H. Johnson 1933-7-12 F 226 Lassen Lassen <National> Forest 1722 Comment
  UC1084101  Phacelia procera Rimo Bacigalupi with G. T. Robbins 1955-7-21 5433 Lassen along upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Englemine and Indian Valley); Gold Run Creek 1767 Comment
  OBI75900  Phacelia racemosa Anthony Baniaga 2011-8-1 477 Lassen Lassen Natl Forest. SW Swain Meadow, near marker tree #27. Swain Mtn quad T30N R8E sec 34 NE of NW 1764 Comment
  CAS-BOT-BC141448  Phacelia ramosissima var. eremophila John Thomas Howell 1934-6-10 11873 Lassen Janesville Comment
  CAS-BOT-BC141447  Phacelia ramosissima var. eremophila H. D. Ripley; R. C. Barneby 1943-6-13 5691 Lassen Milford 1264 Comment
  RSA722687  Phacelia ramosissima var. ramosissima R. R. Halse 2006-8-3 6990 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 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
  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
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  JEPS88429  Phalaris arundinacea Vernon H. Oswald and Lowell Ahart 1996-8-1 8108 Lassen receding shore of the Mountain Meadows Reservoir ne of Indian Ole Dam Mountain Meadows Reservoir (sw of Westwood); , ne of Indian Ole Dam 1539 Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  CHSC41845  Phleum pratense P. V. Caldwell 1972-7-12 272 Lassen Eagle Lake. On banks from Eagle Lake to Papoose Meadows on Papoose Creek. 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
  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
  OBI77067  Phlox hoodii subsp. canescens Anthony Baniaga 2011-6-7 311 Lassen Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  CAS-BOT-BC294732  Phlox speciosa James Vale 1981-5-24 s.n. Lassen Eagle Lake Comment
  RSA551342  Phlox speciosa subsp. occidentalis J. T. Howell, Gordon H. True, Margaret Williams 1973-5-12 49155 Lassen In cemetary, Janesville 1296 Comment
  CHSC7764  Phlox stansburyi Beverley J. Wise 1969-4-10 93 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  HSC17069  Phlox stansburyi Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  CHSC48338  Phoenicaulis cheiranthoides Vernon Oswald 1986-5-28 2061 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  UC1136913  Phoenicaulis cheiranthoides L. R. Short 1936-4-28 S 335 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1737 Comment
  UCD116141  Phoenicaulis cheiranthoides F. H. Taylor 1932-5-16 s.n. Lassen Mr. Foster's field in Big Valley. Comment
  POM94709  Phoenicaulis cheiranthoides Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS127162  Phoradendron bolleanum Lowell Ahart, John Dittes 2016-7-13 21136 Lassen 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at southern slope of Big Valley. Comment
  UC769862  Phragmites australis R. F. Hoover 1940-10-11 4682 Lassen s Doyle; Long Valley Comment
  CAS-BOT-BC58236  Phyllodoce breweri Ella Dales Cantelow 1941-9-13 3599 Lassen Mt. Lassen Nat. Park. Comment
  NY61587  Pinus jeffreyi K. Morris 1973-5-25 219 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  SEINET12429009  Pinus monophylla var. californiarum D. Charlet, P. Herman 1995-3-6 2192 Lassen Diamond Mountains, 10 kn ESE of Adams Peak; W side Long Valley, NW of Petersen Mtn. on little ridgetop visible from US 395, below railroad above windmill; 1408 Comment
  SEINET3874938  Pinus washoensis David A. Charlet 1994-7-6 1924 Lassen Madelin Mesa foothills above Madeline plains.; 0 1689 Comment
  POM204143  Plagiobothrys bracteatus J. T. Howell 1934-7-10 12540 Lassen Patterson Flats Comment
  CHSC58837  Plagiobothrys cusickii Vernon H. Oswald; Lowell Ahart 1992-7-16 5113 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  JEPS124383  Plagiobothrys cusickii Lowell Ahart, John Dittes 2015-7-13 20305 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127274  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-13 21114 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
  CHSC29970  Plagiobothrys hispidulus R. A. Schlising 1979-6-7 3452 Lassen S end of Eagle Lake, at Papoose Creek and Meadow in Lassen National Forest. In streambed. 1584 Comment
  UC1137695  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Lassen National Forest 1743 Comment
  JEPS87508  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
  UC1561381  Plagiobothrys hispidus Barbara Ertter with Gary Schoolcraft 1987-6-16 7190 Lassen on s side Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2286 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
  UC1609123  Plagiobothrys kingii var. harknessii Vernon H. Oswald and Lowell Ahart 1993-6-14 5538 Lassen n side Eagle Lake Road (Lassen A1) at Sandy Beach Road (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  CHSC64872  Plagiobothrys leptocladus Vernon H. Oswald; Lowell Ahart 1995-6-19 6896 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  HSC31353  Plagiobothrys mollis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19273 Lassen Harvey Valley near Cone Springs Comment
  UC1191065  Plagiobothrys mollis Robert Ornduff 1959-7-18 5060 Lassen 1 mi e Madeline (on road from Madeline to the Patterson Ranger Station); Modoc National Forest Comment
  CAS-BOT-BC228467  Plagiobothrys mollis Peter H. Raven; Otto T. Solbrig 1958-6-17 13258 Lassen Near pond along Highway 395, 7.1 miles W of Standish Comment
  CAS-BOT-BC423310  Plagiobothrys mollis var. mollis Mary Merello; H. H. Schmidt; L. Woodruff 1993-6-28 751 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. 1700 Comment
  CHSC110912  Plagiobothrys mollis var. mollis Lowell Ahart; John Dittes 2012-7-9 18283 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
  JEPS114692  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2008-6-20 14921 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS124380  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2015-7-13 20306 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA715627  Plagiobothrys scouleri var. cusickii L. Ahart, John Dittes 2005-6-1 11906 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  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
  CHSC71079  Plagiobothrys tenellus Vernon H. Oswald; Lowell Ahart 1998-5-22 9093 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  CHSC93662  Plagiobothrys tenellus Lowell Ahart; John Dittes 2005-6-2 11994 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  JEPS90082  Plagiobothrys tenellus Dean Wm. Taylor with Robert A. Price 1988-6-4 9766 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. watershed, Fall R. Valley 1036 Comment
  HSC16636  Platanthera dilatata var. leucostachys H. E. Parks, S. T. Parks Jun 1928 217 Lassen Lassen National Park, Drakesbad 1768 Comment
  UC845587  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen about 1 mi e Westwood 1524 Comment
  POM253046  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen About a mile east of Westwood 1524 Comment
  UC1924583  Plectritis brachystemon Debra Valov 2006-5-28 2006012 Lassen Bieber off County Rd. A2 c. 12 km east of Hwy 299 1279 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
  UC1562342  Pleiacanthus spinosus Vernon Oswald and Lowell Ahart 1990-7-25 4395 Lassen 2.2 mi w Highway 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  CAS-BOT-BC254942  Poa bulbosa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49187 Lassen Elysian Valley NW of Janesville 1325 Comment
  CHSC7688  Poa bulbosa Beverley J. Wise 1969-4-28 133 Lassen North city limits of Milford (Hwy 395). 1310 Comment
  UCD90701  Poa bulbosa F. H. Taylor 1932-5-1 s.n. Lassen India Valley. Comment
  CAS-BOT-BC255034  Poa compressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49506 Lassen Elysian Valley, W of Janesville 1325 Comment
  RSA115224  Poa compressa Beecher Crampton 1956-7-17 3736 Lassen Ca. 2.5 miles north of Emigrant Gap. 1372 Comment
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Apr 28 2013
  RSA300130  Poa compressa J. T. Howell 1974-7-10 50553 Lassen Elysian Valley; Sierra Nevada 1326 Comment
  UCD90918  Poa cusickii Leo Whitney 1935-6-10 3214 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UCR119183  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Warner Mountains, 6 miles southeast of Jess Valley, 3 miles east of Blue Lake. Southern edge of mountains. 2134 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
  UC1024913  Poa cusickii subsp. cusickii Leo Whitney 1935-6-26 3369 Lassen meadow near Fruit Grower's Supply Company Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC589886  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadow; Susanville Quadrangle 1524 Comment
  CAS-BOT-BC247319  Poa pratensis Louella Bass 1973-5-29 EU 67 Lassen Elysian Valley 1325 Comment
  HSC10766  Poa pratensis M. T. Milligan 1964-7-16 131 Lassen 2 mi. W on Silver Lake Rd., along Upper Susan River 1829 Comment
  SEINET7850259  Poa pratensis B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11508 Lassen Blue Door Flat, 7 or 8 mi. E of Highway 295, on county road 510. 1774 Comment
  UC1024829  Poa pratensis subsp. pratensis Leo Whitney 1935-6-12 3231 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  CHSC106673  Poa secunda B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  RSA101643  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  SEINET3130214  Poa secunda J. B. Davy 1897-1 sn Lassen Honey Lake Valley Comment
  UC1951068  Poa secunda Debra Valov 2009-4-26 2009024 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CAS-BOT-BC236256  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 miles W of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC247054  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UC1024831  Poa secunda subsp. juncifolia Leo Whitney 1935-6-12 3229 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1137292  Poa secunda subsp. juncifolia K. E. Bradshaw 1939-5-27 236 Lassen Plot 39-1 Black Mt Experimental Forest; Lassen Nat'l Forest, Halls Flat Quadrangle 1752 Comment
  UC1153860  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2048 Lassen 4.5 mi w Susanville Comment
  CHSC30521  Poa secunda subsp. secunda Sandra C. Morey 1980-4-26 78 Lassen Hwy. 139, ca. 1.0 mi. s of jctn. with Hwy. 299. 1284 Comment
  UC1024681  Poa secunda subsp. secunda Leo Whitney 1934-7-10 2165 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen Nat'l Forest, Harvey Valley 1737 Comment
  UC1024818  Poa secunda subsp. secunda Leo Whitney 1935-6-19 3261 a Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132877  Poa secunda subsp. secunda K. E. Bradshaw 1939-5-27 236 Lassen Black Mt Experimental Forest, center of Plot 39-1 Black Mt Experimental Forest; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1567404  Poa secunda subsp. secunda G. Schoolcraft 1989-7-18 1975 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UCD91653  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True, Margaret Williams 1973-5-12 49196 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC60907  Pogogyne floribunda Vernon H. Oswald; Lowell Ahart 1993-7-8 5675 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  UC1483864  Polemonium micranthum M. Meyer 1980-5-1 Lassen e Horse Lake Road (s of Ravendale); , e of Horse Lake Road 1645 Comment
  CDA40272  Polemonium micranthum Lee Wheeler 1960-4-13 3941 Lassen At the fairgrounds, Susanville. 0 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
  CHSC29868  Polyctenium fremontii Robin L. Ondricek 1978-6-20 66 Lassen At edge of tree line around Mahogany Lake; s of Eagle Lake. 2057 Comment
  NY182334  Polyctenium fremontii G. Schoolcraft 1981-4-21 576 Lassen SW corner of Madeline Plains 1615.4 Comment
  SEINET3197107 Image available Polyctenium fremontii var. confertum Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1610 Comment
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 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
  NY661121  Polyctenium williamsiae B. Corbin 2002-6-4 1078 Lassen Mud Flat-south end, East side of Highway 395. 1347.2 Comment
  CHSC117761  Polygala subspinosa Virginia Dains; Joanne Crawford 2016-6-14 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 20 km northeast of Skedaddle Mtns, 11 km east of Highway 395, 1.5 km north of Smoke Creek Ranch Road. 1432 Comment
  HSC63730  Polygala subspinosa Teresa Prendusi 1980-5-19 Lassen Slope above Secret Creek Canyon 1433 Comment
  UC1536795  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-8-5 1041 Lassen near Madeline; Tule Reservoir Comment
  NY652201  Polygonum amphibium var. stipulaceum G. Schoolcraft 1996-9-12 2571 Lassen In Willow Creek north of Susanville 1493.5 Comment
  POM104579  Polygonum amphibium var. stipulaceum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC6645  Polygonum amphibium var. stipulaceum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC419770  Polygonum argyrocoleon Luella Bass 1976-9-1 s.n. Lassen Willard Creek w. of Susanville Comment
  CAS-BOT-BC413910  Polygonum aviculare James Jokerst 1983-7-24 1877 Lassen Near Madeline Plains 1614 Comment
  SEINET10479337  Polygonum aviculare Mary Susan Taylor 1982-8-19 Taylor 5021 Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  JEPS81643  Polygonum aviculare subsp. neglectum M. S. Taylor 1982-8-19 5021 Lassen e side of Hwy 395 ca 4 mi n jct with Hwy 70 at Hallalujah Junction; Beckwourth Pass quad. 1493 Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1567352  Polygonum douglasii subsp. austiniae G. Schoolcraft 1989-7-3 1946 Lassen Diamond Peak Diamond Mtsn. 2346 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
  UC1594644  Polygonum douglasii subsp. spergulariiforme Vernon H. Oswald and Lowell Ahart 1992-7-16 5125 Lassen Bridge Creek Spring Rd. (County Rd 112, Forest Rd. 31N06) 1.0 mi e Willow Spring Road (Forest Rd. 31N56) (between Old Station and Susanville) 1745 Comment
  CHSC58506  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 1992-7-3 5049 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Snag L., ca. 0.1 mi N of Cameron Meadow. 1950 Comment
  JEPS83273  Polygonum polygaloides subsp. confertiflorum J. D. Jokerst 1983-7-24 1883 Lassen Madeline Plains nw of Ravendale; Madeline Plains 1584 Comment
  POM312907  Polygonum polygaloides subsp. confertiflorum S. Galen Smith, H. L. Mason, Malcom A. Nobs 1949-5-29 757 Lassen Marsh, on Great Northern Railroad, Hwy 299, Nubeiber Comment
  UC1520661  Polygonum polygaloides subsp. confertiflorum Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9466 Lassen along US 395 5.6 km (3.5 mi) s Madeline; Madeline Plains 1620 Comment
  CHSC110775  Polygonum sawatchense subsp. oblivium Dean Wm. Taylor 2012-7-18 21277 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  UC506934  Polygonum sawatchense subsp. oblivium George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 Comment
  UC6701  Polygonum sawatchense subsp. sawatchense M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Valley Comment
  HSC82252  Polygonum spergulariiforme Thomas W. Nelson, Jane P. Nelson 1980-7-6 6009 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC232547  Polypogon monspeliensis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile W of Karlo Comment
  JEPS70696  Polypogon monspeliensis W. L. Jepson 1918-8-2 7771 Lassen Beckwith Pass 1463 Comment
  UCR7792  Polypogon monspeliensis Marilyn Malin 1968-7-11 259 Lassen West side of Hwy 395 on west side of Honey Lake 1280 Comment
  CHSC12484  Populus fremontii Carol Weld 1969-6-25 22 Lassen Murrer's Meadow. 1524 Comment
  CHSC71386  Porterella carnosula V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9259 Lassen Moll Reservoir in Ash Valley southeast of Adin. 1615 Comment
  SEINET10460824  Porterella carnosula Peter H. Raven 1958-6-17 Raven 13294 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline Comment
  SEINET10460829  Porterella carnosula Howell 1934-7-7 Howell 12466 Lassen Near Feather Lake Comment
  CHSC4850  Potamogeton R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  JEPS97315  Potamogeton amplifolius Vernon H. Oswald 1995-8-26 7218 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  POM118853  Potamogeton foliosus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1099866  Potamogeton foliosus Verne Grant, Irving Schneider 1947-7-29 8181 Lassen 1 mi e (upstream) of Tule Lake; Cedar Creek Comment
  CHSC59158  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1992-7-16 5118 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. In streamlets in the meadow. 1719 Comment
  UC1099822  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-7-20 1044 Lassen Bieber, along highway 299 Bieber Comment
  CHSC76030  Potamogeton richardsonii Vernon H. Oswald 1999-8-4 9833 Lassen Mountain Meadows Reservoir southwest of Westwood. Along the edge of the reservoir. 1539 Comment
  UCR228123  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  SDSU9114  Potentilla biennis D. F. Howe 1964-7-31 3901 Lassen Parsnip Creek, Warner Mtns, Modoc National Forest. 1829 Comment
  CHSC27741  Potentilla glandulosa subsp. ashlandica Cindy Prouty 1978-7-5 3 Lassen E shore of Mahogany L., S of Eagle L. Meadow. 2060 Comment
  CAS-BOT-BC540364  Potentilla gracilis var. fastigiata John Thomas Howell 1934-7-6 12440 Lassen Harvey Valley Comment
  HSC81543  Potentilla gracilis var. flabelliformis Thomas W. Nelson, Jane P. Nelson 1980-7-6 6042 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC158475  Potentilla gracilis var. gracilis John Thomas Howell 1976-7-19 51948 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  SEINET10540584  Potentilla klamathensis Katherine L. Morris 1973-5-25 Morris 253 Lassen 27.7 miles nw of the junction of hwy 36 and 44 on hwy 44, at robber's spring, In an open meadow on one side of the hwy with yellow pine, white fir and open On the other side Comment
  OBI77047  Potentilla millefolia Anthony Baniaga 2011-6-1 296 Lassen Lassen NF. Bogard Work Station helicopter landing ara, W of RR tracks, N of rd to Crater lake. Pine Crk Valley quad T32N R8e sec 33 NE of SW 1737 Comment
  UCR67033  Potentilla rivalis George K. Helmkamp 1990-10-4 M- 3 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  NY833598  Potentilla rivalis var. millegrana G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1646 Comment
  CHSC75533  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1999-6-9 9760 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. Roadside. 1645 Comment
  CAS-BOT-BC159776  Prunus andersonii Ella Dales Cantelow 1938-10-23 2192 Lassen N. of Doyle, Honey Lake in view Comment
  CHSC118852  Prunus andersonii L. P. Janeway; B. Castro 2015-6-5 11767 Lassen Great Basin, Modoc Plateau. Along the road from the south endof Surprise Valley to Tuledad Canyon, 12.1 road-km south of Surprise Valley Road; 1.8 air-km east of Newland Reservoir/Bare Creek. 1959 Comment
  CHSC1579  Prunus andersonii A. Stone 1937-5-14 Lassen Honey Lake region. Comment
  OBI77048  Prunus andersonii Anthony Baniaga 2011-7-1 412 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  SEINET3157217  Prunus andersonii E. K. Balls 1950-5-9 15947 Lassen 6 mi S of Doyle, hwy 395 1372 Comment
  CDA34466  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. 0 Comment
  SEINET10542397  Prunus andersonii Paul Gallian, David B. Dunn 1971-6-2 Gallian 486 Lassen 5 miles s of milford near honey lake on us hwy 395. Along roadside in grass, Artemesia tridentata assoc. Quercus, jeffrey pine on mountain range to w at ca The same altitude 1250 Comment
  UCD113178  Prunus emarginata Donna Allen 1977-4-20 s.n. Lassen Jamesville grade 1 mile off Highway 89. Comment
  HSC63042  Prunus subcordata J. P. Smith, J. O. Sawyer 1971-5-23 4662 Lassen Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo Comment
  CHSC64853  Prunus virginiana var. demissa Vernon H. Oswald 1995-6-26 6931 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 9.9 mi w of Madeline, ca. 0.5 mi w of the reservoir at Fleming Sheep Camp and along the stream coming from the same. 1609 Comment
  RSA59556  Prunus virginiana var. melanocarpa E. K. Balls 1950-5-22 14827 Lassen 1.8 miles SE of Buntingville. W of Honey Lake, Hwy 395. 1280 Comment
  CAS-BOT-BC239797  Pseudoroegneria spicata John Thomas Howell 1934-6-14 12166 Lassen Near Lost Lake, Warner Mts. 2438 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
  UCD149778  Pseudoroegneria spicata Harry George; William Anderson 1964-6-2 s.n. Lassen Secret Creek. Comment
  UCD91507  Pseudoroegneria spicata Beecher Crampton 1964-6-27 7089 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  UCD91511  Pseudoroegneria spicata August L. Hormay 1929-6-1 s.n. Lassen Susanville Forest Office. Comment
  CHSC11770  Pseudostellaria jamesiana Wayne O. Baum 1971-7-6 71 -6 Lassen E. slope of Gallatin Peak. 1950 Comment
  UC1924240  Psilocarphus brevissimus Debra Valov 2004-6-8 2004244 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC60878  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1993-7-8 5671 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  JEPS119651  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2012-7-9 18290 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC361754  Psilocarphus brevissimus var. brevissimus H. D. Ripley; R. C. Barneby 1944-5-30 5961 Lassen North of Viewland 1371 Comment
  CHSC4880  Psilocarphus elatior R. Carter 1967-6-27 560 Lassen Ca. 10 yds off N side of Rd. 1.75 mi W of Eagle Lake Biology Station. 1584 Comment
  POM40287  Psilocarphus elatior Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  POM27927  Psoralidium lanceolatum Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  HSC93745  Pterospora andromedea Gordon Leppig, Sylvia Leppig, Juli Neander, Kai Neander 1998-8-18 1059 Lassen Blue Lake Campground, Modoc National Forest. 1860 Comment
  POM253219  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile east of Westwood. 1524 Comment
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  CAS-BOT-BC239823  Puccinellia lemmonii G. Schoolcraft 1986-6-2 1601 Lassen About 1 mile west of NV stateline 1341 Comment
  SEINET4890229  Puccinellia lemmonii J. Davy 1897-1 s.n. Lassen Honey Lake Valley Comment
  UCD93433  Puccinellia nuttalliana G. Schoolcraft 2000-6-12 2908 Lassen Cold Springs Reservoir at NE end of Madeline Plains. 1645 Comment
  CHSC12423  Purshia tridentata Anne Linda Brisk 1969-6-20 8 Lassen 5.5 mi S of ELBS on Dean's Ridge Road. 1920 Comment
  SEINET10542488  Purshia tridentata Jeffrey Huber 1971-6-11 Huber 338 Lassen 6 miles w of susanville, on calif. Hwy 36, volcanic soil, pinus ponderosa Forest 1615 Comment
  CAS-BOT-BC147816  Purshia tridentata var. tridentata Doris Kildale Gillespie 1930-5-12 9321 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC147821  Purshia tridentata var. tridentata Alice Eastwood; John Thomas Howell 1940-6-16 8341 Lassen Janesville Comment
  CAS-BOT-BC147823  Purshia tridentata var. tridentata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49161 Lassen Elysian Valley northwest of Janesville 1325 Comment
  HSC25758  Purshia tridentata var. tridentata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19293 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS28802  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen ca 50 yds from Widow Lake (near outlet, near trail); Lassen Volcanic National Park 2057 Comment
  RSA122151  Purshia tridentata var. tridentata K. e. Bradshaw 1939-5-27 234 Lassen S end of Black Mtn E.F. Plot 39-1. Lassen Forest. 1753 Comment
  UC1128540  Purshia tridentata var. tridentata C. W. Hanks 1934-9-26 91 Lassen w side Long Valley (near Plumas National Forest); Sierraville Quad. 1432 Comment
  UC1128550  Purshia tridentata var. tridentata K. Bradshaw 1939-5-27 234 Lassen Black Mountain Experimental Forest; Lassen National Forest, Halls Flat Quad. 1752 Comment
  JEPS28661  Pyrola asarifolia George W. Gillett 1957-7-22 880 Lassen Snag Lake, South shore near Campsite 1850 Comment
  CAS-BOT-BC462880  Pyrola asarifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 Comment
  CAS-BOT-BC466053  Pyrola picta A. G. Brenneis 1928-7-3 11 Lassen Lassen Forest, Jesson Valley 1463 Comment
  CHSC60880  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald; Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd. (Lassen 111, 36N01) 3.0 mi N of Hwy. 44, NE of Poison Lake. 1709 Comment
  POM39973  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UCD135326  Pyrrocoma hirta Ratliff 1966-7-5 4 Lassen Harvey Valley Allot. - Plot 71. Comment
  UC1561924  Pyrrocoma hirta var. hirta Barbara Ertter 1987-7-25 7312 a Lassen Pine Creek Valley at junction of Bridge Creek Springs Road ca 22 airmiles nw Susanville; Pine Creek Valley 1737 Comment
  UC35838  Pyrrocoma hirta var. lanulosa M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SEINET13710357  Pyrrocoma lanceolata Lowell William Ahart, Lowell William Ahart 1999-1 8231 Lassen Willow Creek Wildlife Area, Hwy. 139, 4800 Ft (T31N, R12E, sec 4, SW 1/4) 1463 Comment
  UCD135332  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Hwy 395. Comment
  JEPS100334  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17839 Lassen meadow along jeep road southward from Doyle Grade and 1 air mile South therefrom, just E of Plumas County line, Plumas National Forest 2042 Comment
  UC1192231  Pyrrocoma racemosa var. paniculata Verne Grant and Irving Schneider 1947-9-6 8392 Lassen near Wendel (w of Fleming Rach Headquarters) Comment
  UC1583970  Pyrrocoma racemosa var. paniculata G. Schoolcraft 1990-9-13 2129 Lassen upper end of Stoney creek Stoney Creek 1463 Comment
  CAS-BOT-BC105247  Quercus kelloggii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49159 Lassen Elysian Valley NW of Janesville 1325 Comment
  JEPS37795  Quercus kelloggii W. L. Jepson 1939-8-11 19371 Lassen Milford 1280 Comment
  UCD46640  Quercus kelloggii Annie M. Alexander; Louise Kellogg 1946-8-14 5158 Lassen On hill back of town. Susanville. Comment
  UCD46729  Quercus kelloggii Verne Grant 1947-9-7 8400 Lassen Along Highway 395 west of Honey Lake, several miles south of Janesville, Lassen County, California. Comment
  UCD46733  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen Southwest of Susanville on Gold Run Road, Lassen County. 1341 Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  CAS-BOT-BC104477  Quercus vacciniifolia C. Hart Merriam 1925-8-22 s.n. Lassen Summit, between Butte Creek Meadows and Lake Almanor Comment
  UC1609182  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-5-12 5380 Lassen canal crossing Hwy 44 3.5 mi nw A21 (to Westwood) (n side of road and e side of canal) 1729 Comment
  CHSC27739  Ranunculus alismifolius var. hartwegii J. D. Prouty 1978-7-5 17 Lassen NE shore of Mahogany L., S of Eagle L. Meadow around lake. 2060 Comment
  CHSC61174  Ranunculus alismifolius var. lemmonii Vernon H. Oswald; Lowell Ahart 1993-5-12 5380 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood). On the N side of the road and on the E side of the canal. 1729 Comment
  CHSC91192  Ranunculus aquatilis var. aquatilis Lowell Ahart; John Dittes 2005-6-1 11904 Lassen Bottom of a depression, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CHSC23755  Ranunculus aquatilis var. capillaceus M. S. Taylor 1974-7-10 282 Lassen In creek in meadow, ca. 1/2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  CHSC8742  Ranunculus aquatilis var. capillaceus S. Chulasmai 1966-5-13 34 Lassen Vernal pool, (Johnstonville). Comment
  SEINET10536066  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1974-1 Taylor 282 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC379022  Ranunculus aquatilis var. diffusus Peter H. Raven; Otto T. Solbrig 1958-6-17 13256 Lassen in a pond along United States Highway 395, 7.1 mi west of Standish Comment
  POM99370  Ranunculus californicus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 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
  CHSC14062  Ranunculus glaberrimus var. ellipticus Tim Manolis 1974-2-16 16 Lassen 2 1/4 mi e of Eagle Lake Field Station. Comment
  CHSC108009  Ranunculus macounii Lowell Ahart; John Dittes 2011-6-21 17536 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
  NY494767  Ranunculus occidentalis var. dissectus H. D. D. Ripley 1943-6-13 5682 Lassen Near Milford 1264.9 Comment
  NY494904  Ranunculus sceleratus var. multifidus G. Schoolcraft 1991-6-27 2174 Lassen North of Johnstnville Road, 3 miles east of Susanville 1280.2 Comment
  OBI5233  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville Comment
  CHSC4991  Ranunculus uncinatus L. E. Ray 1967-6-24 28 Lassen Collected ca. 3.5 mi. se ELBS, Upper Murrer Meadow. 1524 Comment
  CDA7608  Ratibida columnaris N. Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles north of the Eagle Lake Resort on service road #33N01. 0 Comment
  CAS-BOT-BC362886  Ratibida columnifera John Thomas Howell 1974-7-9 50486 Lassen SW. of Wildcat Point, Eagle Lake 1554 Comment
  JEPS127178  Rhaponticum repens Lowell Ahart, John Dittes 2016-7-15 21229 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  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
  CHSC12425  Ribes cereum Anne Linda Brisk 1969-6-20 15 Lassen Found 1/4 mi NE ELBS in flat, basaltic, rocky area. 1554 Comment
  UC1127635  Ribes cereum A. Simontacchi 1940-6-15 882 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA0037147  Ribes cereum J. R. Keck Jr. 1977-7-13 s.n. Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. 1830 Comment
  CAS-BOT-BC169007  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  CAS-BOT-BC169008  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  SEINET12216573  Ribes roezlii Unknown 1972-1 286 Lassen 1 mi S of Five Points on Dean's Ridge Rd going to Dean's Meadow Comment
  CHSC13639  Ribes velutinum M. S. Taylor 1974-6-24 288 Lassen Abundant ca. 50 ft w of Eagle Lake Field Station ca. 13 mi nw of Susanville. 1524 Comment
  UCR17289  Ribes velutinum Frank C. Vasek 1975-7-11 750711- 19 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC363011  Rigiopappus leptocladus Arnold Tiehm; Jan Nachlinger; Margaret Williams 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 1386 Comment
  JEPS30485  Rigiopappus leptocladus Peter H. Raven and Otto T. Solbrig 1958-6-17 13302 Lassen along United States Highway 395 8.0 mi n Madeline Comment
  CAS-BOT-BC363008  Rigiopappus leptocladus unspecified 1940-5-31 s.n. Lassen E. of McArthur Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  JEPS95976  Rorippa curvisiliqua Vernon H. Oswald and L. Ahart 1999-6-9 9758 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass: T29N R10E NW1/4 Sect. 22, 5400 ft elevation, mixed coniferous forest 1645 Comment
  UCR163272  Rorippa curvisiliqua Jim Andre 1993-6-29 1411 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  RSA0065538  Rorippa curvisiliqua Marion P. Harthill 1971-6-20 216 Lassen Susanville. Comment
  CHSC113059  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2013-7-22 18855 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
  CDA25121  Rorippa nasturtium-aquaticum Gordon Leppig 1998-7-12 959 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  CHSC30577  Rorippa nasturtium-aquaticum Sori H. Shad 1970-6-24 42 Lassen In upper Murrer's Meadow, in irrigation ditch. 1524 Comment
  CHSC4261  Rorippa nasturtium-aquaticum K. R. Stern 1967-6-24 2405 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  JEPS95970  Rorippa nasturtium-aquaticum Vernon H. Oswald and L. 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: T31N R15E NW1/4 Sect. 2, 4440 ft elevation, springy marsh surrounded by sagebrush scrub 1353 Comment
  UCD115377  Rorippa sinuata Verne Grant; Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting aera on west end of Section 19 on Madeline Plain. 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
  JEPS45635  Rosa woodsii var. ultramontana W. L. Jepson 1918-8-2 7782 Lassen 1 mi below Boni Ranch (lower bench of creek); Long Valley Creek 1371 Comment
  POM90170  Rosa woodsii var. ultramontana Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  POM91623  Rubus parviflorus var. bifarius Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CAS-BOT-BC110481  Rumex B. C. Cain 1925-8-24 85 Lassen 1 mile below Drakesbad, Mount Lassen National Park. 1645 Comment
  SEINET10479394  Rumex acetosella Jeffrey Huber 1971-6-11 Huber 319 Lassen 3 mi E of Westwood, on CA Hwy 36; in volcanic soils (basalt), in Pinus jeffreyi. 1608 Comment
  CHSC117299  Rumex crispus Lowell Ahart; John Dittes 2016-7-13 21134 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
  SEINET4199964  Rumex crispus M. J. Williams 1974-7-29 74 -L-64 Lassen 2 mi. West of Hallelujah Junction, south of Hwy. 70 Comment
  UC1536793  Rumex crispus Gordon H. True Jr. 1939-7-6 1037 Lassen George Bailey Ranch Honey Lake Valley Comment
  UC748316  Rumex maritimus Annie M. Alexander and Louise Kellogg 1946-8-11 5154 A Lassen nw end Eagle Lake (Sam Webb's Hunting Cabins) Comment
  UC1594642  Rumex occidentalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5122 Lassen 1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on logging road paralleling the e side Bridge Creek); Bridge Creek 1719 Comment
  UC1037331  Rumex paucifolius Leo Whitney 1934-7-3 1954 Lassen 14 mi w Eagle Lake (Bogard Ranger Station); Lassen National Forest 1737 Comment
  UC1542940  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA Ash Valley 1554 Comment
  UC6958  Rumex paucifolius Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  UCR163274  Rumex salicifolius Jim Andre 1993-6-29 1409 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  JEPS97683  Rumex salicifolius var. lacustris Annetta M. Carter 1946-8-18 1776 Lassen S end of Grasshopper Valley, N of Eagle Lake. 1615 Comment
  UC1036083  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5152 Lassen 4 to 6 mi s Madeline Comment
  UC1745636  Rumex salicifolius var. lacustris Annetta M. Carter 1946-8-18 1776 Lassen S end of Grasshopper Valley, N of Eagle Lake. 1615 Comment
  CAS-BOT-BC434261  Rumex triangulivalvis John Thomas Howell 1975-7-23 51404 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  CAS-BOT-BC434263  Rumex triangulivalvis Annie M. Alexander; Louise Kellogg 1946-8-11 5153 Lassen Northwest end Grasshopper Valley. Comment
  CHSC71095  Rumex venosus Vernon Oswald; G. Schoolcraft, B. Corbin, M. Mini 1998-5-16 9086 Lassen About 1.5 mi southeast of Herlong along a dirt road on the north side of Long Valley Creek between Garnier Rd. and the RR. 1249 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
  UC568  Sagittaria State Geological Survey 1800-1 2189 Lassen Comment
  JEPS32201  Sagittaria cuneata Leland S. Smith 1918-7-22 1009 Lassen Blue Lake 1874 Comment
  UC935793  Sagittaria cuneata Calvin McMillan and Malcolm A. Nobs 1949-6-15 785 Lassen Nubieber Comment
  CAS-BOT-BC332741  Sagittaria cuneata R. F. Thorne; Larry E. DeBuhr 1975-8-22 46992 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  HSC2897  Sagittaria cuneata R. G. Means 1962-7-4 70 Lassen 19.5 mi. N of Susanville, Hwy. 139 1524 Comment
  UCD149941  Sagittaria latifolia William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC108056  Salix exigua P. Monnet 1919-7-1 823 Lassen Hot Springs Peak 91 Comment
  SEINET3260830  Salix exigua Marcus E. Jones 1897-6-28 Lassen Susanville. 1340 Comment
  CHSC93555  Salix jepsonii Lowell Ahart; John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) 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. 1601 Comment
  RSA716142  Salix jepsonii L. Ahart, John Dittes 2005-6-2 11947 Lassen About 1.5 miles NE of the Anderson Ranch home. Long Valley. About 6 (air) miles N of the intersection of Scott Road and Hwy 70. 7.5 (air) miles NW of Hallelujah Jct. 1602 Comment
  NY430479  Salix laevigata G. Schoolcraft 1994-8-2 2413 Lassen About 1.5 miles southwest of Boot Lake 2011.7 Comment
  CAS-BOT-BC124634  Salix lemmonii John Thomas Howell 1976-7-20 52016 Lassen along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CHSC60767  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1993-6-3 5489 Lassen Bridge Creek Spring Rd. (Lassen 112, Forest 31N06), at Bridge Creek, N of Hwy 44 between Poison Lake and Susanville. 1746 Comment
  CHSC9572  Salix lemmonii E. L. Smith 1971-4-28 946 B Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  HSC95283  Salix petrophila Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC126131  Salix scouleriana John Thomas Howell; Gordon H. True 1973-7-31 50041 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  POM106677  Salix scouleriana Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CDA37714  Salsola paulsenii Breckenridge/Filippini 2007-6-14 s.n. Lassen Wendell Plains. 0 Comment
  JEPS78095  Salsola tragus Gary W. Zamzow 1972-7-18 84 Lassen beside Highway 395, 3 mi n Hallelujah Junction; n of Hallelujah Junction 1371 Comment
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  CDA34340  Salvia aethiopis Anonymous 1987-6-18 Lassen New Pine Creek, along Hwy 395 north into Oregon. 0 Comment
  JEPS93816  Salvia dorrii var. dorrii Vernon H. Oswald and Lowell Ahart 1998-6-4 9145 Lassen s of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  CHSC68855  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1997-6-24 8609 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundry. 1889 Comment
  JEPS117483  Sanguisorba annua Lowell Ahart, John Dittes 2010-7-31 17003 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
  UCD127944  Sanicula bipinnatifida W. W. Robbins 1926-4-17 534 Lassen Grass Valley. Comment
  CDA19211  Sarcobatus vermiculatus D. Kratville 2001-6-21 s.n. Lassen Modoc Plateau; Outside of Susanville. 0 Comment
  CHSC6239  Sarcodes sanguinea Sam Webb 1946-6-8 Lassen Roop Mountain, Eagle Lake. 2133 Comment
  UC70391  Sarcodes sanguinea Milo S. Baker 1890-4 Lassen Honey Lake Valley Comment
  CAS-BOT-BC466321  Sarcodes sanguinea John Thomas Howell 1973-7-10 49786 Lassen Sierra Nevada, Fredonyer Pass 1737 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
  CHSC63613  Schoenoplectus subterminalis Vernon H. Oswald; Helen Ost, John Ost, M. L. Mini 1994-8-6 6446 Lassen Caribou Wilderness from the Hay Meadow trailhead N of Chester, at an un-named lake on the S edge of the trail between Hidden Lakes and Long Lake. 2103 Comment
  UC1100752  Scirpus acutus var. occidentalis Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 Lassen 1 mi s Doyle; Long Creek, s of Doyle Comment
  UC1100760  Scirpus acutus var. occidentalis Verne Grant and Irving Schneider 1947-8-24 8270 Lassen nw shore Blue Lake (northern Lassen County); nw shore Blue Lake Comment
  UC2119  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3291 Lassen beside sloughs Honey Lake Valley, beside sloughs Tule Confederacy (Tule Confederacy, Honey Lake Valley) Comment
  CHSC61594  Scirpus microcarpus Arthur G. Barrett 1915-8-18 35 Lassen Plumas National Forest. Laufman Ranger Station. 1463 Comment
  SEINET6727388  Sclerolinon digynum J. T. Howell, G. H. True., Jr. 1973-6-28 49490 Lassen Sierra Nevada, Elysian Valley 1326 Comment
  JEPS84931  Scrophularia desertorum Barbara Ertter with Gary Schoolcraft 1987-6-16 7191 Lassen ne side Honey lake (s side of Hot Springs VABM); Skeedaddle Mts 2286 Comment
  SEINET10744751  Scrophularia lanceolata Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 837 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CHSC77219  Scutellaria holmgreniorum G. Schoolcraft 1998-7-14 2762 Lassen N. of Shaffer well on E. side of Tablelands. 1371 Comment
  NY415692  Scutellaria holmgreniorum N. H. Holmgren 1980-7-5 9524 Lassen 21.9 km (13.6 mi.) from U.S. Hwy. 395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale 1580 Comment
  CAS-BOT-BC214257  Scutellaria nana Clarence R. Quick 1964-8-1 64 -92 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CAS-BOT-BC214260  Scutellaria nana Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8591 Lassen Flats on the northwest side of Shaffer Mountain, 7.5 air miles north-northwest of Litchfield 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-BC214269  Scutellaria nana John Thomas Howell 1934-6-10 11879 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  HSC82199  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6054 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  RSA128297  Scutellaria nana Peter H. Raven, Otto T. Solbrig 1958-6-17 13270 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  SJSU5853  Scutellaria nana J. W. Tilden 1960-6-27 1508 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  UC1037195  Scutellaria nana Leo Whitney 1934-7-10 1513 Lassen 14 mi w of Eagle Lake (near Harvey Valley); Lassen National Forest 1737 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
  UC1137775  Scutellaria nana August L. Hormay 1934-7-2 Lassen 1/4 mi nw of Black's Mountain; Lassen National Forest 1706 Comment
  UC1549235  Scutellaria nana Richard Olmstead 1983-7-2 415 Lassen 16 mi s of Ravendale (1 mi s of rest area, near small stream, along US 395); US 395 1444 Comment
  CAS-BOT-BC240084  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16342 Lassen 13.5 mi. E. of Susanville Comment
  RSA152627  Secale cereale I. L. Wiggins, Dorothy Wiggins 1961-6-11 16342 Lassen On hillside 13.5 mi. of Susanville Comment
  CAS-BOT-BC363325  Senecio aronicoides Jean Langenheim 1957-6-26 4372 Lassen Northwest Said Valley, north-eastern part of Lassen County Comment
  UC1063252  Senecio aronicoides A. Simontacchi 1940-5-28 769 Lassen 9.3 mi nw Crater Lake; Halls Flat Quad. 1752 Comment
  UC1184060  Senecio aronicoides Jean Langenheim 1957-6-26 4372 Lassen ne part Said Valley Comment
  UC506921  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Lassen Forest 1783 Comment
  HSC28835  Senecio integerrimus D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19263 Lassen In Harvey Valley near Cone Springs Comment
  HSC63728  Senecio integerrimus Teresa Prendusi 1980-4-30 Lassen NE of Snowstorm Ranch near Kalo Rd., Ravendale; near railroad tracks 1585 Comment
  CHSC5218  Senecio integerrimus var. exaltatus A. Santos 1946-6-13 Lassen Pine Creek, Eagle Lake. 1600 Comment
  HSC90792  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air mi due S of Susanville. 2256 Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  CHSC76260  Sesuvium verrucosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8217 Lassen Field about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  HSC22981  Sidalcea malviflora John Pratt 1970-7-9 71 Lassen 1677 Comment
  SBBG4714  Sidalcea oregana H. and M. Dearing 1939-6-6 3569 Lassen Bieber Comment
  POM84765  Sidalcea oregana subsp. oregana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC1553380  Sidalcea oregana subsp. spicata G. Schoolcraft 1988-7-7 1820 Lassen at Painter Creek and Horne Ranch Rd. crossing 1645 Comment
  UC186050  Sidalcea oregana subsp. spicata T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  SEINET9005527  Sidalcea oregana var. spicata C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC506918  Silene bernardina George A. Fischer and Irwin H. Johnson 1933-7-14 F- 257 Lassen Lassen Forest 1783 Comment
  UC585109  Silene bernardina E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1765 Lassen rocky ne slope of ridge near summit e Red Rock; summit e of Red Rock 1828 Comment
  UC8440  Silene douglasii M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  CAS-BOT-BC389264  Silene lemmonii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  JEPS50953  Silene nuda W. L. Jepson 1918-8-3 7802 Lassen near Buntingville (at Raker Ranch, Honey Lake Valley); Honey Lake Valley, at Raker Ranch 1219 Comment
  JEPS87996  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ca 1.5 mi e Diamond Peak (ca 10 airmi due s of Susanville, ridge of Diamond Mts.); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  UC569941  Silene nuda E. Sawyer 1935-6-27 223 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CHSC5235  Sisymbrium altissimum L. Harman 1946-6-26 Lassen Webb's, Eagle Lake. 1584 Comment
  SEINET11572879  Sisymbrium altissimum M. J. Williams 1974-7-26 74 -L-33 Lassen 2 mi. W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  UC1126792  Sisymbrium altissimum E. Sawyer 1935-6-27 224 Lassen Long Valley 1310 Comment
  SEINET10448851  Sisymbrium altissimum Billy Joe Cox, Paul Gallian 1971-2-2 Cox 2583 Lassen 6 mi. S. Of adin; along calif. 139 Right-of-way; in basalt-clay, grassy road bank; artemesia juniper assoc. 1372 Comment
  CHSC5932  Sisyrinchium bellum M. West 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CAS-BOT-BC365367  Solidago elongata L. S. Smith 1918-8-11 1022 Lassen Modoc National Forest. Camp One Comment
  CAS-BOT-BC365368  Solidago elongata Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  UCR67459  Solidago occidentalis George K. Helmkamp 1990-9-23 G- 10 Lassen north of Ravendale 1677 Comment
  CAS-BOT-BC365752  Solidago spectabilis Lassen 1927 G. S. Crew 1927-7-15 82 Lassen Lassen National Forest. Feather Lake 1737 Comment
  CAS-BOT-BC364907  Solidago velutina subsp. californica Louella Bass 1973-9-4 EV 134 Lassen Elysian Valley 1325 Comment
  SBBG3122  Sorbus sitchensis H. and M. Dearing 1939-6-12 3644 Lassen S of Lassen Comment
  CHSC96734  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch 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
  CAS-BOT-BC149630  Spiraea douglasii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49445 Lassen Elysian Valley, west of Janesville 1325 Comment
  POM91114  Spiraea douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  HSC95268  Spiranthes romanzoffiana Gordon Leppig, J. Cromwell 1997-7-26 601 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC32869  Sporobolus airoides J. S. White 1980-4-14 116 Lassen 0.5 mi se of Wendel. 1219 Comment
  CHSC41843  Stachys ajugoides var. rigida P. V. Caldwell 1972-7-8 262 Lassen Eagle Lake. 1 mile from the forest road toward Papoose Meadows on Papoose Creek. Comment
  CHSC5276  Stachys ajugoides var. rigida L. Harman 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  CAS-BOT-BC311783  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen Near Karlo, about 12 miles north of Litchfield 1356 Comment
  SEINET11604939  Stanleya viridiflora L. Bass 1982-7-25 10 -82 Lassen Near Karlo, ca 12 miles N of Litchfield. 1356 Comment
  UCD99328  Stellaria longipes subsp. longipes Ratliff 1966-7-8 1 Lassen Harvey Valley Allot. - Plot 49. 1706 Comment
  CHSC99292  Stellaria longipes var. longipes Lowell Ahart; John Dittes 2008-6-20 14956 Lassen About 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CDA19745  Stenotus stenophyllus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Eagle Lake. 0 Comment
  UC1587037  Stephanomeria lactucina G. Schoolcraft 1991-7-30 2200 Lassen e slope Widow Mountain 1859 Comment
  CDA8868  Stephanomeria spinosa E. E. Fix 1946-7-21 Lassen Susanville. 0 Comment
  CHSC23504  Stephanomeria tenuifolia Wayne O. Baum 1971-7-19 71 -76 Lassen E. slope of Gallatin Peak. 2072 Comment
  CHSC29899  Stephanomeria tenuifolia Robin L. Ondricek 1978-8-2 110 Lassen On top of ridge se of Eagle Lake Field Station. 1609 Comment
  CHSC66853  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1996-10-3 8296 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 13.4 mi N of Smoke Creek Ranch Rd. Roadside. 1524 Comment
  UCR244171  Stipa comata Jim Andre, G. L. Clifton 1993-6-3 19701 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  SEINET10524630  Stipa comata var. comata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 884 Lassen Coll 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  HSC22876  Stipa hymenoides John Pratt 1970-6-14 15 Lassen East of Janesville Comment
  JEPS122362  Stipa nevadensis Jaycee Leonard, Joseph Broberg, Stacy Belshaw 2012-8-7 CA 320 -121 Lassen From Alturas head south on Highway 395.Turn left onto county road 64, and continue to Jess Valley. Turn right at fork onto county road 258. Continue past Blue Lake, and turn onto Clark Valley road. Collection site is just after border between BLM and USFS land Comment
  UCR119160  Stipa thurberiana Beecher Crampton 1964-6-27 7095 Lassen Modoc Plateau, 5 miles southwest of Ravendale. 1707 Comment
  SEINET10448891  Streptanthus cordatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 514 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along ridge and in sandy wash. 1402 Comment
  SEINET10940334  Streptanthus cordatus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2606 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon juniper pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  SEINET958426  Stuckenia pectinata Verne Grant, Irving Schneider 1947-1 8184 Lassen East side of Tule Lake. Comment
  NY541219  Suaeda nigra G. Schoolcraft 1998-9-14 2807 Lassen Flat near Amedee Hot Springs 1219.2 Comment
  SEINET4172103  Suaeda occidentalis T. L. Breene, H. Sampson 1937-8-28 59 Lassen 5 mi. S of Wendel Comment
  CHSC63602  Subularia aquatica var. americana Vernon H. Oswald; John Ost, Mary Lou Mini 1994-8-6 6447 Lassen Caribou Wilderness along the west loop of the trail from the Hay Meadow to Long Lake. On the margin of a pond. 2065 Comment
  CHSC48447  Swertia albicaulis var. albicaulis Vernon Oswald 1986-5-28 2060 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  CHSC64843  Swertia albicaulis var. albicaulis Vernon H. Oswald 1995-6-26 6920 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CAS-BOT-BC237073  Symphoricarpos rotundifolius John Thomas Howell 1977-6-22 52396 Lassen Northeast of Susanville on road to Eagle Lake, Sierra Nevada Comment
  OBI72112  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved rd. T22N R17E sec 5 NENE 1524 Comment
  CHSC118847  Symphyotrichum bracteolatum L. P. Janeway 2015-8-10 11830 Lassen Warner Mountains. Steep west-facing slope above the 64 Road (39N01 - the road to Patterson Campground), 0.2 km north-northeast of crossing of East Creek; between Peterson Meadow and Long Valley. 2047 Comment
  UC1561922  Symphyotrichum campestre Barbara Ertter 1987-7-25 7311 a Lassen 22 airmiles nw of Susanville; Pine Creek Valley 1737 Comment
  CAS-BOT-BC98540  Symphyotrichum spathulatum Louella Bass 1973-6-6 99 Lassen Sierra Nevada - Elysian Valley 1325 Comment
  CAS-BOT-BC98541  Symphyotrichum spathulatum B. C. Cain 1925-8-24 82 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CHSC23557  Taraxacum officinale W. O. Baum 1971-6-6 33 Lassen E slope of Gallatin Peak in fire trail. 1920 Comment
  CHSC7643  Taraxacum officinale Beverley J. Wise 1969-3-4 30 Lassen 0.5 mi. north of Susanville on Hwy 139. 1310 Comment
  JEPS118448  Taraxacum officinale Lowell Ahart, John Dittes 2011-6-20 17490 Lassen About 30 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
  CHSC12455  Taraxia tanacetifolia Robert W. Severin 1969-6-27 39 Lassen 2/3 mi n E.L.B.S. in meadow. 1557 Comment
  CHSC27714  Taraxia tanacetifolia Robert A. Schlising 1978-7-6 3311 Lassen Dry Lake, SE of Eagle Lake. 1645 Comment
  CHSC36471  Taraxia tanacetifolia Jeffrey R. Peek 1982-6-4 32 Lassen Ca. 3/4 mi n Murrers Upper Meadow, ca. 20 yds e of road. Comment
  JEPS31732  Taraxia tanacetifolia C. S. Robinson 1927-6-25 38 Lassen near Westwood Jct. (sw Lassen Co.); Lassen <National> Forest, Norval Flat 2051 Comment
  UC20508  Taraxia tanacetifolia Mrs. C. C. Bruce June 1898 2203 Lassen Susanville Comment
  CAS-BOT-BC329047  Tetradymia canescens Elmer I. Applegate 1897-6-4 3034 Lassen Madeline Plains Comment
  CAS-BOT-BC329048  Tetradymia canescens Margaret Williams; Steven Williams 1974-7-26 74- 2 -28 Lassen near Hallelujah Junction, west of Hwy. 395 and south of Hwy. 70 1493 Comment
  RSA252490  Tetradymia canescens R. F. Thorne, C. W. Tilforth 1969-9-6 39265 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC340065  Tetradymia glabrata A. A. Heller 1938-6-23 15205 Lassen Near Litchfield, on U. S. Highway #395 Comment
  CHSC109989  Tetradymia glabrata L. P. Janeway; B. Castro 2012-7-2 10920 C 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. 1241 Comment
  UCD55271  Tetradymia spinosa Ellen Dean 2006-5-15 3081 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  UC480868  Thalictrum sparsiflorum Franklin P. Nutting Lassen Pine Creek Comment