Search Results — 2000 specimen records retrieved (1641 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
  SD132529  Abies concolor F. C. Vasek 1976-9-3 760903 3 Lassen 5 miles west of Susanville, north of State Highway #44 at a point Ao mile north of junction with State Highway #36 Comment
  CHSC12493  Achillea millefolium Carol Weld 1969-6-20 20 Lassen Dean's Meadow. 1950 Comment
  UC1125421  Achillea millefolium A. Simontacchi 1940-6-13 826 Lassen 3.3 mi wsw Patterson Mtn.; Halls Flat Quad. 1752 Comment
  CAS-BOT-BC260402  Achnatherum hymenoides Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16335 Lassen 13.5 miles E of Susanville Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  CHSC52909  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near the east-side of saddle ca 0.8 mi NE of Meadowview Peak. 1981 Comment
  CHSC60791  Achnatherum hymenoides Vernon H. Oswald; Lowell Ahart 1993-6-14 5544 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89) 1566 Comment
  UCD55573  Achnatherum hymenoides Beecher Crampton 1964-6-27 7090 Lassen Ca. 8-9 miles NE of Susanville. 1828 Comment
  SEINET249775 Image available Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UC1024870  Achnatherum lemmonii Leo Whitney 1935-5-26 3156 a Lassen 10 mi e Adin (Ash Creek); Ash Creek Comment
  UC1137653  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson F 198 Lassen Grass Valley Lassen National Forest 1696 Comment
  UC1137759  Achnatherum lemmonii August L. Hormay 1934-5-15 Lassen e Eldrige's; Lassen National Forest 1524 Comment
  UC773978  Achnatherum lemmonii L. R. Short and J. Warren 1936-6-9 S- 401 Lassen Burgess Spr. Exp. Range Lassen Forest 1808 Comment
  UCD50546  Achnatherum lemmonii A. H. Shunk 1923-1 11 Lassen Bogard Ranger Sta., Lassen County, California. Comment
  UCD50593  Achnatherum lemmonii L. Whitney 1933-7-7 s.n. Lassen Halls Flat, Lassen County. 1737 Comment
  CAS-BOT-BC110708  Achnatherum nevadense G. Schoolcraft 1997-6-26 2600 Lassen Large knob between Milford and Janesville. 1676 Comment
  CHSC114405  Achnatherum nevadense Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A. 2133 Comment
  SBBG115546  Achnatherum nevadense B. Crampton 1960-6-18 5729 Lassen S Warner Mts, ca. 1.25 mi N of Blue Lake, in vicinity of Blue Lake Ranch 1981 Comment
  UCD18962  Achnatherum occidentale Jack N. Reppert 1965-7-12 14 Lassen Lassen National Forest, Harvey Valley Allotment (HV 81-76). 1737 Comment
  SEINET7593424 Image available Achnatherum occidentale John Thomas Howell 1934-1 12431 Lassen Hall's Flat Comment
  CHSC109530  Achnatherum occidentale subsp. californicum B. Castro; L. P. Janeway 2003-10-5 1459 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail between Cone Lake and Triangle Lake, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  UC1024835  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-10 3221 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD51065  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3288 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  RSA129480  Achnatherum occidentale subsp. occidentale G. A. Fischer, I. H. Johnson 1933-7-12 F- 199 Lassen Grass Valley 1697 Comment
  CAS-BOT-BC218609  Achnatherum occidentale subsp. pubescens John Thomas Howell 1976-7-20 52003 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek, Sierra Nevada 1432 Comment
  CAS-BOT-BC218611  Achnatherum occidentale subsp. pubescens John Thomas Howell 1974-7-10 50519 Lassen Janesville, at the cemetery, Sierra Nevada 1295 Comment
  UC1024687  Achnatherum occidentale subsp. pubescens Leo Whitney 1933-7-15 2158 Lassen ca. 16 mi w of upper end of Eagle Lake (Harvey Mountain); Lassen National Forest Comment
  UC1024939  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-26 3334 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD51216  Achnatherum occidentale subsp. pubescens R. Tofsrud 1947-7-1 222 Lassen 12 mi. E. of Madeline. Comment
  CHSC80710  Achnatherum speciosum V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10034 Lassen Northeast of Doyle in the Fort Sage Mtns, 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
  CHSC29880  Achnatherum thurberianum Robin L. Ondricek 1978-6-8 47 Lassen Ridge E of Lower Dry Lake. 1798 Comment
  CAS-BOT-BC218010  Achnatherum thurberianum Clifton F. Smith 1964-6-25 8566 Lassen On road from Ozen to Lockwood Valley watershed, 0.5 mile from the latter near summit, Cuyama Valley drainage 1645 Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  SBBG67342  Acmispon americanus S. W. Hutchinson -Jun-1925 539 Lassen Eagle Lake region 1554 Comment
  CHSC27639  Acmispon americanus var. americanus George Deniso 1978-7-16 77 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  CHSC29909  Acmispon americanus var. americanus Robin L. Ondricek 1978-7-15 99 Lassen East side of Lower Dry Lake. 1645 Comment
  JEPS60355  Aconitum columbianum Brown and Wieslander 1922-7-30 19 Lassen Eagle Lake, Martin Springs Comment
  UC882898  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen 39 mi n Susanville; Grasshopper Valley 1524 Comment
  CAS-BOT-BC30239  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen West of Janesville Comment
  CAS-BOT-BC383105  Ageratina occidentalis Andrew Townesmith; Karen M. Meyer 2007-7-20 836 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  CAS-BOT-BC30234  Ageratina occidentalis Hans Leschke 1961-8-18 1832 Lassen Summit area of Diamond Peak 2423 Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long Valley Comment
  UC1567420  Agoseris glauca var. glauca G. Schoolcraft 1989-6-6 1902 Lassen n end Secret Valley ((w of Hwy 395)) 1350 Comment
  UCD128649  Agoseris glauca var. glauca Grady L. Webster 1989-5-13 7704 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  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
  CAS-BOT-BC13413  Agoseris retrorsa Louella Bass 1973-5-29 82 Lassen Elysian Valley 1325 Comment
  HSC100160  Agropyron cristatum J. P. Smith, & J. O. Sawyer 2011-8-14 13375 Lassen Ramhorn Campground. 1383 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
  JEPS100322  Agrostis exarata Dean W. Taylor 2001-7-12 17829 Lassen Diamond Mountains, spring at mouth of canyon ca. 4 miles NW of Constantia, along Forest Road 25N02X 1341 Comment
  SEINET248545  Agrostis exarata Barbara L. Wilson, Richard Brainerd, Danna Lytjen, 2004-8-24 11168 Lassen Snowstome Creek, at a spring; upstream of Biscar reservoir, west of an old railroad right of way. 1463 Comment
  UC589901  Agrostis exarata H. S. Yates 1936-8-11 6067 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  UCD52428  Agrostis exarata L. Whitney 1933-8-2 2152 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  SEINET4341020  Agrostis exarata G. Schoolcraft 1994-8-1 2382 Lassen About 2 miles west of Boot Lake 2256 Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  CHSC29905  Agrostis scabra Robin L. Ondricek 1978-8-4 114 Lassen Near edge of Eagle Lake along grassy shoreline. 1554 Comment
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest Comment
  SEINET5335984  Agrostis stolonifera M. J. Williams 1974-7-26 74 -L-39 Lassen 2 mi. W of Hallelujah Junction, S of highway 70 1494 Comment
  CAS-BOT-BC138570  Agrostis variabilis John Thomas Howell 1959-9-23 34890 Lassen North end of Juniper Lake, Lassen Park. 2057 Comment
  UC188820  Agrostis variabilis Milo S. Baker July 1894 Lassen Comment
  HSC63727  Aliciella leptomeria Teresa Prendusi 1980-5-19 1134 Lassen Saddle Rock. 1524 Comment
  UCD149882  Aliciella leptomeria Harry George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  RSA119134  Alisma plantago-aquatica Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 Comment
  UC1776688  Allium acuminatum G. Schoolcraft 1993-6-29 2307 Lassen Ash Valley S of T intersection 1557 Comment
  SEINET3883805  Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Highway 395, 3.0 miles south of Ravendale.; 0 Comment
  SEINET8117272  Allium atrorubens A. Tiehm, J. Nachlinger, M. J. Williams 1988-1 11702 Lassen S side of Shaffer Mountain, 3.4 road miles N of the Wendel road on highway 395 from Susanville to Alturas, W of the highway. 1387 Comment
  POM110223  Allium campanulatum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1133850  Allium lemmonii A. Simontacchi 1940-6-4 805 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD138558  Allium lemmonii A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3366 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  CAS-BOT-BC474044  Allium parvum G. L. Stebbins; J. A. Jenkins 1937-7-9 2274 Lassen Bare summit ridge and ridges south west of Diamond Mt., south of Susanville 2286 Comment
  CAS-BOT-BC474046  Allium parvum Louella Bass s.n. Lassen Elysian Valley Comment
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  CAS-BOT-BC474075  Allium platycaule Clare B. Hardham 1971-7-22 s.n. Lassen Diamond Moutain 2346 Comment
  CAS-BOT-BC476625  Allium tolmiei B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6563 Lassen U.S. Hwy. 395 6.0 km N of railroad crossing and 20.1 km N of Litchfield. 1330 Comment
  CHSC91199  Alnus incana subsp. tenuifolia Lowell Ahart; John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  UC60734  Alopecurus aequalis M. S. Baker and F. Nutting 1894-7-1 Lassen n. side Dixey Mts. Comment
  CAS-BOT-BC138163  Alopecurus aequalis var. aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 miles west of Chester, Route 36. Comment
  CHSC60728  Alyssum desertorum Vernon H. Oswald; Lowell Ahart 1993-6-14 5534 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). Along the edge of the road. 1566 Comment
  CHSC67190  Alyssum minus subsp. micranthum James D. Jokerst 1991-5-28 3293 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, ca. 400 ft E of the highway on slopes above road, S of a small canyon mouth. 1554 Comment
  UCD114089  Alyssum simplex W. A. Harvey 1964-6-23 s.n. Lassen J. E. Albaugh ranch, ca. 4 miles southwest of Adin. Comment
  CAS-BOT-BC42891  Ambrosia acanthicarpa Margaret Williams; Steven Williams 1974-7-26 74 -L-10 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC66845  Ambrosia acanthicarpa Vernon Oswald 1996-10-3 8298 Lassen North of Susanville on Horse Lake Road (Lassen 546) 3.6 mi E of Hwy. 139. Modoc Plateau. 1554 Comment
  RSA132023  Ambrosia acanthicarpa Delzie Demaree 1959-8-18 41520 Lassen P.O. Termo. Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  SEINET10931749  Amelanchier gracilis Jeffrey Huber 1971-6-11 Huber 331 Lassen 1 mile w of westwood, on cal hwy 36, scattered pinus ponderosa, pseudotsuga Menziesii, arctostaphylos, and ceanothus, all volcanic soils, rather flat and Arid Comment
  CAS-BOT-BC142542  Amelanchier utahensis George W. Gillett 1957-7-26 903 Lassen Butte Lake, point of rocks west of outlet and above trail - Lassen Volcanic National Park 1844 Comment
  UC1127823  Amelanchier utahensis A. Simontacchi 1940-6-4 796 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1828 Comment
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  CHSC5244  Amphiscirpus nevadensis 1946-6-25 Lassen Eagle Lake. 1554 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-BC222255  Amsinckia John Thomas Howell 1934-6-10 11870 Lassen Honey Lake Valley, 24 miles s. of Susanville Comment
  CAS-BOT-BC222252  Amsinckia Alice Eastwood; John Thomas Howell 1940-6-11 7967 Lassen Eastern Fall River Valley 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
  CDA40473  Amsinckia menziesii var. menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  CHSC7718  Amsinckia menziesii var. menziesii Beverly J. Wise 1969-4-28 1 Lassen 2.4 mi. north of Susanville on Hwy 139 at the junction of Rnd Valley Rd. Comment
  UC1924218  Amsinckia menziesii var. menziesii Debra Valov 2004-6-9 2004258 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  UC61145  Amsinckia tessellata var. tessellata Jos. Burtt Davy Lassen Honey Lake Valley Awadee Comment
  UC725370  Amsinckia tessellata var. tessellata A. A. Heller 1938-6-23 15204 Lassen just outside Johnstonville (on US Hwy #395) Comment
  POM39125  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC773954  Antennaria argentea L. R. Short and Wm. Gansberg 1936-6-10 S- 414 Lassen Burgess Spr. Exp. Range 1856 Comment
  UC891493  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen ca 12 mi n of, at lava beds Fall River Mills (Shasta Co.); Fall River 1371 Comment
  UCR7842  Antennaria argentea Marilyn Malin 1968-6-27 256 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 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
  CHSC108021  Antennaria dimorpha Lowell Ahart; John Dittes 2011-6-20 17508 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC54170  Antennaria dimorpha Vernon H. Oswald 1991-5-28 4624 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  CHSC71069  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1998-5-22 9088 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  JEPS107971  Antennaria dimorpha Lowell Ahart, John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  OBI77058  Antennaria dimorpha Anthony Baniaga 2011-6-5 305 Lassen Lassen NF. Pine Crk Valley N side. Pine Crk Valley quad. T32N R8E sec 35 SW of SW 1725 Comment
  HSC69050  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Schaffer Mtn. about 1/2 mile west of Hwy. 395 1463 Comment
  UC1609122  Antennaria geyeri Vernon H. Oswald and Lowell Ahart 1993-6-14 5528 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Sandy Beach, w shore of Eagle Lake, upper beach between road and lake); Eagle Lake Rd 1566 Comment
  UC485653  Antennaria geyeri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UC1137668  Antennaria luzuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 241 Lassen below Patterson R. S.; Lassen National Forest 1737 Comment
  CHSC92826  Antennaria luzuloides subsp. aberrans Lowell Ahart; John Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1523728  Antennaria rosea Gary Schoolcraft 1982-7-14 800 Lassen w of Constantia 1524 Comment
  UCD128940  Antennaria rosea Beecher Crampton 1960-6-18 5712 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UC885063  Antirrhinum vexillocalyculatum subsp. breweri C. L. Hitchcock 1940-5-26 6597 a Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  JEPS114859  Apera interrupta Lowell Ahart, John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CHSC4823  Apocynum androsaemifolium R. Carter 1967-7-21 624 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Dramond Mountains. Comment
  CDA39744  Apocynum androsaemifolium Taylor 1938-7-18 s.n. Lassen Susanville. 0 Comment
  SEINET7881828 Image available Apocynum pumilum Helen K. Sharsmith 1955-1 4516 Lassen Ponderosa Pine-Black Oak forest adjacent to Highway 89 north of Hat Creek Ranger Station, Lassen National Forest. Altitude ca. 3800 feet. 1158 Comment
  CAS-BOT-BC392210  Aquilegia formosa John Thomas Howell 1974-7-10 50545 Lassen Elysian Valley 1325 Comment
  CHSC30594  Aquilegia formosa Marc Held 1972-7-7 41 Lassen Collected on the roadside above Gallatin Beach. Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  UC306926  Aquilegia formosa Marcus E. Jones 1897-6-28 Lassen Susanville, Perkin's Ranch Diamond Mt. 1828 Comment
  SEINET10866232  Arabis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2601 Lassen Hallelujah jct intersection of u.s. 395 And state hwy 70; in open waste area adjacent to artemisia tridentata comm. 1433 Comment
  RSA716275  Arabis holboellii var. retrofracta L. Ahart 2005-6-2 11926 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
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Jun 20 2021
  RSA0129045  Arabis platysperma Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS53113  Arabis puberula M. S. Baker and F. P. Nutting 1894-7-2 Lassen s. side Dixey Mts. Comment
  JEPS53155  Arabis rectissima var. rectissima Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  UC1504479  Arabis rectissima var. rectissima Reed C. Rollins and Kathryn W. Rollins 1981-5-31 81172 Lassen 2.2 mi n CA Hwy 36 junction with County Hwy A-1 Comment
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  NY119631  Arabis suffrutescens G. Schoolcraft 1983-6-29 1038 Lassen Coulthurst Flat area, 34-10-27 SW 1889.8 Comment
  CAS-BOT-BC409989  Arceuthobium campylopodum John Thomas Howell 1973-7-10 49787 Lassen Fredonyer Pass 1737 Comment
  UC1584019  Arceuthobium campylopodum G. Schoolcraft 1990-8-1 2120 Lassen betw Cleghorn and Heath Reservoirs 1828 Comment
  CAS-BOT-BC45896  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  HSC7705  Arctostaphylos patula L. H. Myers 1963-4-14 39 Lassen Janesville grade road, ca. 3 mi. S of Janesville Comment
  UC1137649  Arctostaphylos patula A. Simontacchi 1940-5-13 703 Lassen 4.1 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1137730  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  UCD53307  Arctostaphylos patula Beecher Crampton 1964-1-26 7080 Lassen Ca. 35 miles NW of Susanville. 2042 Comment
  CHSC25747  Arctostaphylos patula subsp. patula John Steiner 1977-6-14 73 Lassen Lassen Volcanic National Park. 250 m NE Manzanita Lake and 250 m E Lassen Park boundry. 1768 Comment
  CHSC36457  Arctostaphylos patula subsp. patula Susan H. Euing 1982-6-5 11 Lassen Base of northeast slope, Gallatin Peak, 1000 ft approx. from summit. Comment
  RSA700049  Arenaria 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. 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
  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
  JEPS46143  Arenaria congesta var. congesta Duncan Dunning 1921-8-19 Lassen 3 m s Antelope Mountain (south and west of Eagle Lake. East tributary of Pine Creek.); Martin Spring, Pine Creek Comment
  UC506974  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 223 Lassen Lassen Forest 1728 Comment
  CDA23999  Arenaria congesta var. crassula T. C. Fuller 1963-6-11 10661 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  UC465891  Arenaria congesta var. subcongesta Franklin P. Nutting Lassen Dixey Valley Comment
  UC1299621  Arenaria congesta var. subcongesta Freed W. Hoffman 1946-6-8 911 Lassen Dry Creek, Highway 395 Comment
  CAS-BOT-BC401789  Argemone munita subsp. rotundata Alice Eastwood; John Thomas Howell 1940-6-16 8337 Lassen Near Susanville Comment
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  SEINET10940510  Argemone platyceras var. hispida Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 864 Lassen Collected on raod bank 24 mi n of calif state line of hwy 395. Comment
  RSA0011559  Arnica R. F. Thorne, Larry E. DeBuhr 1975-8-22 46993 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  JEPS35887  Arnica chamissonis Brown and Wieslander 1922-7-30 26 Lassen Martin Springs , Eagle Lake Comment
  JEPS22841  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mi e Fredonyer Pass 1706 Comment
  RSA32851  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen More or less shaped gravelly slope in the yellow pine forest 1 mile east of Fredonyer Pass, on State Hwy #36 1738 Comment
  CHSC5221  Arnica dealbata 1944-7-26 Lassen Juniper Lake. 2055 Comment
  CAS-BOT-BC82649  Arnica latifolia John Thomas Howell; Gordon H. True 1973-8-1 50236 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 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
  CHSC12429  Arnica nevadensis Robert W. Severin 1969-6-21 10 Lassen 2 mi SSE E.L.B.S. between Five Points turnoffs. 1584 Comment
  CAS-BOT-BC85029  Arnica sororia Elmer I. Applegate 1897-6-3 866 Lassen Madeline Plains Comment
  CDA10134  Artemisia abrotanum E. E. Fix 1964-11-4 Lassen From Soil Conservation Service Nevada. 0 Comment
  UCD129186  Artemisia arbuscula B. L. Kay 1955-4-19 s.n. Lassen 15 miles north of Honey Lake. US Highway 395. Comment
  UCD129188  Artemisia arbuscula F. C. Raney 1966-6-25 s. n. Lassen Harvey Valley, Lassen National Forest. Comment
  CAS-BOT-BC85003  Artemisia arbuscula subsp. arbuscula Clare B. Hardham 1971-8-22 18370 Lassen Diamond Mountain 2346 Comment
  UC1136977  Artemisia arbuscula subsp. arbuscula L. R. Short 1936-9-30 S- 506 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1746 Comment
  UC747143  Artemisia arbuscula subsp. arbuscula G. Thomas Robbins 1945-10-18 2156 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  CHSC118471  Artemisia arbuscula subsp. thermopola Don Leply 2016-7-31 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile northeast of railroad crossing on Highway 44. 40N31:46.7 x 121W01:35.9. 1743 Comment
  UCD129263  Artemisia biennis Malcolm A. Nobs; Galen Smith 1949-8-20 1482 Lassen Long Creek, 1 mile north of Doyle, Honey Lake Valley. Comment
  SDSU6174  Artemisia cana subsp. bolanderi D. F. Howe 1966-8-25 4302 Lassen 41 miles south of Alturas on #395. 1676 Comment
  CAS-BOT-BC90331  Artemisia douglasiana John Thomas Howell 1975-7-23 51390 Lassen Susanville 1295 Comment
  CAS-BOT-BC90330  Artemisia douglasiana Clare B. Hardham 1971-8-22 18374 Lassen North slopes, Diamond Mountain 2133 Comment
  UC1776711  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfield and Bass Hill Roads 1322 Comment
Read comments
Aug 12 2019
  JEPS103170  Artemisia dracunculus Beth Corbin 2002-7-10 1089 Lassen Madeline Plains, ESE side. 5 air mi N of top of Observation Pk. 1627 Comment
  JEPS124638 Image available Artemisia lindleyana Laurie Hooker 1965-7-13 119 Lassen On highway 299 west under 2nd bridge of Pit river overflow. Comment
  CHSC5196  Artemisia ludoviciana M. West 1946-7-9 Lassen Eagle Lake. Pine Creek, Eagle Lake. 1580 Comment
  CAS-BOT-BC90766  Artemisia ludoviciana subsp. ludoviciana G. H. True 1937-7-10 783 Lassen Bull Flat (n. of Honey Lake) Comment
  SEINET230067  Artemisia nova Leila M. Shultz, John S. Shultz 1985-6-23 8602 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  CAS-BOT-BC97325  Artemisia tridentata subsp. tridentata George W. Gillett 1957-9-4 1132 Lassen Near Bute Lake; intersection of the Widow Lake - Snag Lake trails 1859 Comment
  CAS-BOT-BC97328  Artemisia tridentata subsp. tridentata L. S. Smith 1918-8-11 1026 Lassen Modoc National Forest, Camp One 2529 Comment
  CHSC67056  Artemisia tridentata subsp. tridentata Willis Ball 1969-6-19 4 Lassen Found approx. 1/2 mile N of E.L.B.S. 1554 Comment
  UC762002  Artemisia tridentata subsp. tridentata R. F. Hoover 1940-9-28 4639 Lassen Leavitt Comment
  SEINET230066  Artemisia tridentata subsp. vaseyana Leila M. Shultz, John S. Shultz 1985-6-23 8604 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  JEPS124637 Image available Artemisia vulgaris Dixie Funnell 1965-7-13 137 Lassen Growing under bridge about 4 feet from the water. Highway 299, under bridge 705 for pit overflow. Comment
  CHSC26163  Asclepias cordifolia J. D. Detzer; Sacks 1977-6-10 36 Lassen Ca. 0.5 km s of Hwy 395, 4 km w of Milford. 1386 Comment
  HSC3295  Asclepias cordifolia H. E. Parks, S. T. Parks Jun 1928 226 Lassen Lassen National Park, Drakesbad 1982 Comment
  UC1123518  Asclepias cordifolia C. W. Hanks 1934-9-26 93 Lassen near Plumas National Forest (w side of valley); Sierraville Quadrangle, Long Valley Comment
  CHSC6223  Asclepias speciosa M. West 1946-7-7 Lassen Eagle Lake 1584 Comment
  SEINET199764  Asclepias speciosa George A. Fischer 1933-7-29 F- 276 Lassen Lassen National Forest; Stringer, in southwest corner of N.F. 1695 Comment
  CAS-BOT-BC99241  Aster G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  CHSC12949  Astragalus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5811 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  UCR73175  Astragalus G. L. Webster 1989-5-13 7710 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA624916  Astragalus B. J. Cox, Paul Gallian 1971-6-2 2599 Lassen Hallelujah Jct. intersection of U.S. 395 and Hwy 70. Comment
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Jan 15 2016
  RSA715658  Astragalus accidens var. hendersonii L. Ahart 2005-6-1 11917 Lassen 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. 1426 Comment
  NY790906  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles northwest of Termo 1615.4 Comment
  CAS-BOT-BC177437  Astragalus andersonii John Thomas Howell 1934-6-10 11846 Lassen 4 miles south of Omira Comment
  CAS-BOT-BC177438  Astragalus andersonii Alice Eastwood; John Thomas Howell 1940-6-16 8351 Lassen Omira Comment
  CDA26597  Astragalus andersonii L. Ahart, J. Dittes 2005-6-1 11917 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. Comment
  CHSC106586  Astragalus andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  JEPS107690  Astragalus andersonii Lowell Ahart, John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  UC84393  Astragalus andersonii T. Brandegee 1892-6-30 Lassen Janesville Comment
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Oct 22 2007
  UC1483838  Astragalus anxius G. Schoolcraft 1980-8-14 307 Lassen w of Madeline; Ash Valley 1548 Comment
  CAS-BOT-BC178768  Astragalus canadensis var. brevidens R. Halse 1991-7-28 4247 Lassen Along State Hwy. 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville. 1558 Comment
  NY797391  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen Along north shore of Eagle Lake 1554.5 Comment
  HSC82253  Astragalus curvicarpus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6005 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS87396  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111,36N01) 1.9 mi n of Hwy 44 on the se edge Poison Lake; se edge Poison Lake 1709 Comment
  UC84408  Astragalus curvicarpus var. curvicarpus unknown 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC177842  Astragalus curvicarpus var. curvicarpus M. E. Jones 1897-6-24 s.n. Lassen 10 to 15 mi. w. of Amedee 1219 Comment
  CAS-BOT-BC182952  Astragalus filipes Lassen 1927 G. S. Crew 1927-7-15 74 Lassen Lassen National Forest 1725 Comment
  JEPS125804  Astragalus filipes William Harnach 2010-6-8 1244 Lassen Honey Lake Valley, NE of Doyle, 2 miles west of the Nevada state line on Fort Sage Road. Comment
  SEINET225940 Image available Astragalus filipes M. Lavin, K Lavin 1982-5-16 4069 Lassen 1.5 mi E of Halleujah Jct. (US 395), 22 air mi 325 degrees from Reno, W side of Peterson Mts 1676 Comment
  SEINET3140019  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km S of Doyle on US Hwy 395 1430 Comment
  UC1583579  Astragalus filipes G. Schoolcraft 1990-6-13 2093 Lassen in John's Valley about 4 mi s Nubierber; s of Nubieber in John's Valley 1371 Comment
  CAS-BOT-BC182955  Astragalus filipes T. C. Fuller 1965-8-26 14038 Lassen Haskell Parks range, Diaz Flat, ca. 5 mi. e. of Hayden Hill, n.w. Lassen Co. Comment
  RSA111070  Astragalus filipes H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5675 Lassen South of Constantia. 1463 Comment
  CAS-BOT-BC186860  Astragalus gibbsii John Thomas Howell 1974-7-8 50462 Lassen Susanville 1295 Comment
  CAS-BOT-BC186864  Astragalus gibbsii Doris Kildale Gillespie 1930-5-12 9348 Lassen Between Susanville and Leavitt Lake Comment
  POM24783  Astragalus gibbsii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET3142990  Astragalus gibbsii E. K. Balls 1950-5-9 15949 Lassen 6 mi S of Doyle, Hwy 395 1372 Comment
  CAS-BOT-BC186866  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1944-5-29 5951 Lassen Constantin 1371 Comment
  NY674269  Astragalus gibbsii K. Morris 1973-5-25 214 Lassen 4 miles south of Susanville, on US 36 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 Comment
  RSA647557  Astragalus gibbsii Marion P. Harthill 1971-6-20 220 Lassen Ravendale Comment
  CAS-BOT-BC186913  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5749 Lassen W. of Susanville 1310 Comment
  CHSC98246  Astragalus inversus Allison Sanger 2003-6-25 Lassen Halls Flat, west of Road 33N13, roughly 3 air miles north-northwest of Swains Hole and 8 miles east-northeast of Old Station. 1676 Comment
  SEINET5324147  Astragalus iodanthus var. iodanthus A. Tiehm 1980-1 5755 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  UCD35735  Astragalus lentiginosus Beecher Crampton 1960-6-20 5738 Lassen Harvey Valley, 6 miles north of Bogard Ranger Station. 1676 Comment
  OBI49332  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 1280 Comment
  POM26417  Astragalus lentiginosus var. lentiginosus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  UC13403  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  CHSC106669  Astragalus malacus B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CAS-BOT-BC192847  Astragalus pulsiferae H. D. Ripley; R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley 1615 Comment
  SEINET948657  Astragalus pulsiferae John Thomas Howell 1955-1 30818 Lassen East side of Beckwourth Pass. Sierra Nevada 1494 Comment
  UC13449  Astragalus pulsiferae J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Long Valley, Honey Lake Valley, Chat (Long Valley, Honey Lake Valley) 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
  NY694127  Astragalus pulsiferae var. pulsiferae See comments 1981-6-23 614 Lassen West of Susanville 1463 Comment
  NY694131  Astragalus pulsiferae var. pulsiferae A. A. Heller 1907-7-1 8674 Lassen Near Old Chat Comment
  UC13450  Astragalus pulsiferae var. suksdorfii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC5282  Astragalus purshii V. Holt 1944-7-9 Lassen Dow Butte. 2042 Comment
  SJSU8415  Astragalus purshii J. W. Tilden 1960-6-27 1498 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  CAS-BOT-BC194097  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8352 Lassen Omira Comment
  CHSC60739  Astragalus purshii var. purshii Vernon H. Oswald; Lowell Ahart 1993-6-14 5520 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  CAS-BOT-BC192973  Astragalus purshii var. tinctus Doris Kildale Gillespie 1930-5-13 9376 Lassen Between Susanville and Janesville Comment
  CHSC117211  Astragalus purshii var. tinctus Lowell Ahart; John Dittes 2016-6-7 20984 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  POM45166  Astragalus purshii var. tinctus T. S. Brandegee 1892-6-23 s.n. Lassen Honey Lake Comment
  UC604677  Astragalus purshii var. tinctus Farris Farris 1935-5-20 Lassen three mi sw Susanville; sw of Susanville 1310 Comment
  UC584308  Astragalus whitneyi G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2275 Lassen sw Diamond Mt. (s of Susanville); sw of Diamond Mt., s of Susanville 2164 Comment
  CDA7885  Astragalus whitneyi var. confusus G. Schoolcraft 1985-5-22 s.n. Lassen Along A2 about 5 miles S of Adin, CA. Comment
  JEPS103211  Astragalus whitneyi var. confusus G. Schoolcraft 1985-5-22 1396 Lassen Along A2 about 5 miles south of Adin, CA. 1341 Comment
  SEINET12162056  Astragalus whitneyi var. confusus J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4136 Lassen ca 3mi S of Adin on hwy.139 1372 Comment
  CAS-BOT-BC200874  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CAS-BOT-BC200876  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susnaville. Perkin's Ranch 2225 Comment
  CAS-BOT-BC198724  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  CAS-BOT-BC68710  Athyrium filix-femina var. californicum Clare B. Hardham 1971-8-22 18405 Lassen Diamond Mountain 1981 Comment
  JEPS118271  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
  CAS-BOT-BC172656  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen In Secret Valley west of Hwy. 395 Comment
  UC1924265  Avena fatua Debra Valov 2004-6-9 2004265 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  RSA122664B  Avena sativa A. Simontacchi 1940-6-13 854 Lassen 3.4 miles W.S.W. of Patterson Mtn.; Halls Flat 1738 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-BC106493  Balsamorhiza hookeri Rhonda Riggins 1989-4-27 1635 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N. Litchfield, 26.6 mi S Ravendale 1310 Comment
  SEINET10617201  Balsamorhiza hookeri Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 476 Lassen Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  SEINET10617205  Balsamorhiza incana Billy Joe Cox 1971-6-2 Cox 2985 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  CHSC31967  Balsamorhiza sagittata Wayne O. Baum 1971-6-21 71 -30 Lassen S. slope of Gallatin Peak. 2042 Comment
  UC1136968  Balsamorhiza sagittata L. R. Short and Wm. Gansberg 1936-6-16 S- 441 Lassen Burgess Spr. Exp. Range Lassen National Forest 1813 Comment
  SJSU8894  Balsamorhiza sagittata W. Savage 1971-7-20 722 .5 Lassen c. 2 mi N of Milford near W side Honey Lake 1264 Comment
  CAS-BOT-BC16437  Barbarea orthoceras George Wilson Gillett 1957-7-21 868 Lassen Lassen Volcanic National Park. Juniper Lake - Cameron Meadow trail. 300 yards north of trail summit. 2118 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
  JEPS114766  Beckmannia syzigachne Lowell Ahart, John Dittes 2008-6-20 14946 Lassen In swales, 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
  SJSU9993  Beckmannia syzigachne C. L. Kline 1965-7-13 195 Lassen 1.8 mi E of Nubieber on Highway 299 2493 Comment
  UC790979  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen lower slopes of peak 6 mi s Ravendale; Observation Peak Comment
  UCD56798  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  NY833352  Berteroa incana A. Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles west of highway 395 on highway 70 then 5.5 road miles north on Scott Road 1494 Comment
  SEINET11193808  Berteroa incana W. Harnach 2006-5-31 1229 Lassen Long Valley, Anderson Ranch, Scott Road, ca 5.5 miles N of Hwy 70. 1457 Comment
  UCR182884  Berteroa incana D. Mcdonald 2005-7-18 PDR 1307852 Lassen Modoc Plateau, Hallelujah Junction Comment
  CHSC58833  Betula pumila var. glandulifera Vernon H. Oswald; Lowell Ahart 1992-7-16 5116 Lassen On Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  CHSC112972  Bidens cernua Lowell Ahart; John Dittes 2013-7-23 18897 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
  CHSC117276  Bidens cernua Lowell Ahart; John Dittes 2016-7-15 21225 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
  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
  CHSC96712  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CHSC34602  Bistorta bistortoides N. E. Heiken 1978-7-16 72 Lassen Colman L., several mi S of Eagle L. 1962 Comment
  SEINET4176271  Bistorta bistortoides C. G. Gulling 1905-1 1548 Lassen Big Meadows Comment
  CAS-BOT-BC127972  Blepharipappus scaber Ella Dales Cantelow 1941-5-22 3551 Lassen U. S. Hy 395 n. of Litchfield Comment
  CDA19752  Blepharipappus scaber D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC5201  Blepharipappus scaber 1944-7-1 Lassen Eagle Lake. 1584 Comment
  CHSC68732  Blepharipappus scaber Vernon H. Oswald; Lowell Ahart 1997-5-27 8484 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  JEPS94612  Blepharipappus scaber Vernon H. Oswald and Lowell Ahart 1997-5-27 8484 Lassen e side of Hwy 139 at a small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  UC1119057  Blepharipappus scaber A. Simontacchi 1940-7-8 5575 Lassen 5.1 mi s of Jelly Camp (Halls Flat); Halls Flat 1699 Comment
  UC894096  Blepharipappus scaber C. L. Hitchcock 1940-5-26 6612 Lassen ca 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  CDA10533  Blepharipappus scaber T. C. Fuller 1963-6-1 10620 Lassen Road to Susanville, 2.0 miles south of Pittville. 0 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
  SEINET10945354  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2584 Lassen 6 mi. S of Adin; along CA Hwy. 139 right-of-way; in basalt-clay, grassy road bank; Artemisia-Juniper assoc. 1372 Comment
  UC1537354  Blepharipappus scaber Gordon H. True Jr. 1937-7-10 790 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1493 Comment
  SEINET7379359 Image available Blepharipappus scaber subsp. scaber J. A. Young 1982-6-9 s.n. Lassen Myers Ranch, Adin 1372 Comment
  CHSC101060  Boechera puberula John Dittes 2008-5-22 1532 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 350 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, volcanic outcrop on northeast side of Willow Creek. 485 Comment
  CAS-BOT-BC25512  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-7-31 50039 Lassen Sierra Nevada. Diamond Range on road from Janesville to Thompson Peak. 1737 Comment
  CHSC11772  Boechera retrofracta Wayne O. Baum 1971-6-28 71 -10 Lassen East slope of Gallatin Peak. 1950 Comment
  CHSC40526  Boechera retrofracta J. D. Jokerst 1983-5-30 1796 Lassen West of Ash Valley, along the road that leads to Know Mt. ca 1.0 mile north of the road to either Aden or Madeline. Comment
  CHSC68740  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1997-5-27 8495 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. On the north side of a creek paralleling the road. 1546 Comment
  CAS-BOT-BC25507  Boechera retrofracta Doris Kildale Gillespie 1930-5-14 9383 Lassen 5 miles west of Susanville. Comment
  CAS-BOT-BC25705  Boechera sparsiflora John Thomas Howell; Gordon H. True 1973-7-31 50064 Lassen Sierra Nevada. Diamond Range. Road from Janesville to Thompson Peak. 1783 Comment
  CHSC106675  Boechera sparsiflora B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC36477  Boechera sparsiflora Margaret E. Halloran 1982-6-6 12 Lassen Pine Creek just below fish trap where Pine Crek empties into Eagle Lake. Comment
  CHSC40528  Boechera sparsiflora J. D. Jokerst 1983-5-30 1797 Lassen West of Ash Valley along the SW side of the road to Knox Mt ca 1 mile north of its junction with the road that connects Aden and Madeline. Comment
  UC1137672  Boechera sparsiflora L. R. Short 1936-6-1 S- 354 Lassen Burgess Spr. Exp. Range Lassen Forest 1859 Comment
  UC585227  Boechera sparsiflora E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1761 Lassen nw side of summit of ridge e Red Rock 1828 Comment
  CAS-BOT-BC25877  Boechera subpinnatifida John Thomas Howell 1934-6-10 11861 Lassen Honey Lake Valley, 37 miles south of Susanville. 1219 Comment
  JEPS18771  Brickellia microphylla var. microphylla R. F. Hoover 1940-10-5 4674 Lassen pass between Shaffer Mt. and Warren Peak Shaffer Mt. Comment
  HSC82193  Brodiaea coronaria subsp. coronaria Thomas W. Nelson, Jane P. Nelson 1980-7-6 6047 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  SEINET201569  Brodiaea coronaria subsp. coronaria Arthur Cronquist 1959-6-18 8485 Lassen 5 miles south of Adin Comment
  UC60846  Bromus M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mountains Comment
  CAS-BOT-BC149583  Bromus carinatus var. carinatus Parkison 1916-6-21 42 Lassen Near Patterson. 1706 Comment
  UC1037124  Bromus carinatus var. carinatus Leo Whitney 1935-6-16 3274 Lassen 15 mi w of Eagle Lake (Lassen National Forest, Crater Lake); Lassen National Forest, Crater Lake 2133 Comment
  UC1130972  Bromus carinatus var. carinatus H. P. Hagge 1929-8-12 29 Lassen Logan Mountain 1828 Comment
  UCD59098  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  POM115036  Bromus catharticus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1024682  Bromus ciliatus Leo Whitney 1934-7-26 2164 Lassen 7-8 mi sw of Eagle Lake (near Bridge Creek, Lassen National Forest, Bridge Creek Camp); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UC1024715  Bromus hordeaceus Leo Whitney 1935-5-20 3098 Lassen 14 mi w of Eagle Lake (Lassen National Forest, Harvey Valley, near dam); Lassen National Forest, Harvey Valley 1737 Comment
  CHSC99519  Bromus japonicus Lowell Ahart; John Dittes 2008-6-19 14875 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
  JEPS124392  Bromus japonicus Lowell Ahart, John Dittes 2015-7-13 20310 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS97404  Bromus japonicus Vernon H. Oswald and L. Ahart 1995-6-19 6874 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  UC1024828  Bromus racemosus Leo Whitney 1935-6-12 3232 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10 Lassen National Forest; , Fruit Grower's Supply Company, Camp Comment
  CAS-BOT-BC161656  Bromus secalinus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1615 Comment
  UC60732  Bromus secalinus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  UC1136819  Bromus suksdorfii George A. Fischer and Irwin H. Johnson 1933-7-14 F 261 Lassen Lassen National Forest 1783 Comment
  CAS-BOT-BC161417  Bromus tectorum John Thomas Howell 1977-6-22 s.n. Lassen Sierra Nevada. About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  CAS-BOT-BC161418  Bromus tectorum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49520 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 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
  UC1924566  Bromus tectorum Debra Valov 2006-5-28 2006038 Lassen Bieber off County Rd. A2 ca 12 km east of Hwy 299 1279 Comment
  UC773967  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S 409 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  UC1142960  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Westwood Junction Lassen National Forest 1737 Comment
  CHSC68744  Callitriche hermaphroditica Vernon H. Oswald; Lowell Ahart 1997-5-27 8514 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy. 139. 1682 Comment
  CHSC112410  Callitriche heterophylla Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18750 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET10531060  Calocedrus decurrens Katherine L. Morris 1973-5-25 Morris 226 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  UC423015  Calochortus leichtlinii Franklin P. Nutting Lassen Pine Creek Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  RSA166662  Calochortus leichtlinii H. Dearing, M. Dearing 1938-7-1 2237 Lassen Top of pass west of Susanville 1763 Comment
  UC119897  Calochortus macrocarpus T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CDA39286  Calochortus macrocarpus L. E. Wheeler 1967-7-25 s.n. Lassen H. Boswell property, Madelaine. 0 Comment
  SEINET10675935  Caltha leptosepala var. biflora Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A21. 1920 Comment
  CHSC30571  Calyptridium umbellatum Sori H Shad 1970-6-25 32 Lassen Found E. 2 mile past Murrer's Meadow on N. side of road in rocky soil. 1524 Comment
  CHSC30590  Calyptridium umbellatum Marc Held 1972-6-29 22 Lassen North end of Dean's Meadow. Comment
  CHSC67062  Calyptridium umbellatum Willis Ball 1969-6-20 16 Lassen Found beside road on Dean's Ridge. 1950 Comment
  HSC12524  Calyptridium umbellatum Marcus E. Jones 1897-6-28 Lassen Diamond Mtn., Susanville, Perkin's Ranch 2226 Comment
  UC420619  Calyptridium umbellatum Franklin P. Nutting Lassen Pine Creek Comment
  UC725616  Calyptridium umbellatum A. A. Heller 1938-6-22 15139 Lassen 1 mi e of Westwood (along State Hwy #36) 1524 Comment
  SEINET188321  Calyptridium umbellatum C. L. Hitchcock 1940-5-26 6608 Lassen Ca 12 mi N of Fall River Mills (Shasta Co) on Fall River 1372 Comment
  RSA339996  Calystegia polymorpha Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-9 9581 Lassen Surprise Valley, 23.7 km (14.7 mi) south of Fort Bidwell. 1402 Comment
  CAS-BOT-BC497551  Camassia quamash subsp. breviflora Elmer I. Applegate 1934-5-4 8936 Lassen Elysian Valley northwest of Janesville 1325 Comment
  HSC22954  Camassia quamash subsp. breviflora John Pratt 1970-6-21 32 Lassen Seasonally flooded lake edge 1707 Comment
  CHSC20416  Camassia quamash subsp. quamash K. R. Stern 1967-6-25 2431 Lassen On road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  CHSC66238  Camelina microcarpa Vernon H. Oswald; Lowell Ahart 1996-6-24 7881 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 NE corner of the meadow (ca. 0.1 mi E of where Papoose Creek leaves the N end of the meadow). 1636 Comment
  JEPS96126  Camelina microcarpa Vernon H. Oswald and Lowell Ahart 1996-6-24 7881 Lassen 2.5 mi s of Eagle Lake (0.5 mi e of Eagle Lake Road (A1), at ne corner of Papoose Meadows, (0.1 mi e of where Papoose Creek leaves the n end of meadow)); Modoc Plateau, Papoose Meadows 1636 Comment
  CHSC4969  Camissonia R. Carter 1967-6-23 540 Lassen Along rd to Murrer's Meadow. 1584 Comment
  NY850416  Camissonia andina N. H. Holmgren 1980-7-5 9521 Lassen Upper Smoke Creek drainage, 20.4 km (12.7 mi) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale 1580 Comment
  POM39324  Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  RSA0021212  Camissonia claviformis subsp. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale. 1341 Comment
  JEPS89992  Camissonia contorta Dean Wm. Taylor with Robert A. Price 1988-6-4 9768 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. Watershed 1036 Comment
  JEPS107952  Camissonia pubens Lowell Ahart, John Dittes 2005-6-2 11993 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
  UC107616  Camissonia pubens T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  HSC22874  Camissonia tanacetifolia John Pratt 1970-6-13 6 Lassen 1677 Comment
  CAS-BOT-BC160833  Camissonia tanacetifolia subsp. quadriperforata James Jokerst 1983-5-31 1787 Lassen Near Madeline Plains 1583 Comment
  POM38369  Camissonia tanacetifolia subsp. quadriperforata F. H. Hillman 1897-7-12 s.n. Lassen Chat. Comment
  RSA12158  Camissonia tanacetifolia subsp. quadriperforata Wayne E. Sawyer 1935-6-27 219 Lassen Long Valley. 1311 Comment
  POM204165  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell 1934-7-8 12505 Lassen Spalding s, Eagle Lake. Comment
  CAS-BOT-BC37035  Capsella bursa-pastoris Louella Bass 1973-4-13 12 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC91201  Capsella bursa-pastoris Lowell Ahart; John Dittes 2005-6-2 11919 Lassen Near bunkhouse, Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS94549  Cardamine breweri Vernon Oswald and Lowell Ahart 1997-6-24 8618 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43, 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 Comment
  UC972184  Cardamine nuttallii Milo S. Baker 1952-5-23 12430 Lassen Highway 36 1/2 mi w Fredonyer Pass; w of Fredonyer Pass 1752 Comment
  UC1137782  Carex August L. Hormay 1934-5-14 Lassen Gray's Flat Well Lassen National Forest 1706 Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  RSA702447  Carex abrupta L. P. Janeway 2004-6-26 8170 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  CAS-BOT-BC17908  Carex angustata George Wilson Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. South Shore of Snag Lake. 100 yards from lake. 1850 Comment
  HSC97144  Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. Along end of meadow and marsh along Bridge Creek, 1.8 km. N of Hwy. 44, just NW of the Cinder Pit 1716 Comment
  CAS-BOT-BC18106  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen 28 km. (17.5 mi.) northeast of Ravendale. Campground on east shore of Dodge Reservoir. Stream adjacent to the boat ramp. Comment
  CHSC89754  Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  CHSC113778  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highwy 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  CAS-BOT-BC20649  Carex douglasii John Thomas Howell 1974-7-10 50549 Lassen Sierra Nevada. Elysian Valley. 1325 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
  JEPS94486  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8519 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38MN04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir, Forest Route 38MN04 1682 Comment
  CHSC111069  Carex douglasii Barbara L. Wilson 2011-8-7 16803 Lassen Where route A21 crosses the railroad tracks north of Westwood; UTM 10, 669989 east, 4469294 north, +/- 23. 1606 Comment
  SEINET10823343  Carex douglasii Gordon H. True 1939-6-15 True 996 Lassen Bullard Lake west of Grasshopper Valley. Comment
  CHSC108015  Carex filifolia var. erostrata Lowell Ahart; John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CAS-BOT-BC21305  Carex fracta John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49451 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC20938  Carex heteroneura John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50698 Lassen South and southeast of Diamond Mountain. 2286 Comment
  JEPS87491  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen e Silver Lake (at the sw edge of swamp, just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
  SEINET7587564 Image available Carex heteroneura L. P. Janeway 2003-7-24 7915 A Lassen Swain Mountain 7.5' Quad, High Cascade Range, along Forest Service Road 30N14 1.1 km from Road 30N21. Small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  CHSC114410  Carex infirminervia Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. 6.5 or so air miles south of Susanville, in alder patch below the second aspen stand in an ephemeral drainage corridor upslope from the end of Road 29N07A. 1719 Comment
  CAS-BOT-BC31439  Carex leporinella Hans Leschke 1945-9-15 s.n. Lassen Near Twin Lakes, Mt. Lassen Comment
  UC1609199  Carex livida Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen e Silver Lake (just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
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May 19 2014
  CHSC114406  Carex microptera Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A. 2133 Comment
  CHSC25910  Carex nebrascensis K. R. Stern 1967-6-25 2429 Lassen Road to Eagle Lake Biological Station, Dean's Meadow near Gallatin Peak, ca. 3 mi. S of Eagle Lake. 1676 Comment
  CHSC85989  Carex nebrascensis L. P. Janeway 2003-7-24 7914 Lassen High Cascade Range. At lower end of a meadow and marsh along Bridge Creek 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  JEPS28339  Carex nebrascensis George W. Gillett 1957-7-22 881 Lassen Lassen Volcanic National Park, Snag Lake, Campsite near south shore Snag Lake; Lassen Volcanic National Park, Snag Lake 1850 Comment
  SEINET7568738 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7914 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  HSC103643  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8019 Lassen Along north side of Silver Lake 1829 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
  UC1755280  Carex petasata Dean W. Taylor 2007-6-14 20126 Lassen stream channel draining Lower Gooch Valley into Gordon Valley [dry on this date in a very dry year, stream channel with fluvial geomorphology indicating flow in spring on average] 1828 Comment
  JEPS118273  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 17477 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  HSC48221  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19176 Lassen Harvey Valley near Cone Springs Comment
  HSC103634  Carex scopulorum var. bracteosa Thomas W. Nelson, Jane Nelson 1985-8-10 8028 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  UC2031874  Carex sheldonii Nick Otting and Danna Lytjen 2003-7-21 714 Lassen Modoc Plateau, Cedar Creek near Moon Lake, 6.25 air miles east-northeast of Madeline. Comment
  UC2031891  Carex sheldonii Nick Otting 2003-7-14 674 Lassen Modoc Plateau, Willow Creek at Willow Creek Campground, 14 air miles south-southeast of Adin. 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
  CDA33168  Carex simulata T. C. Fuller 1966-7-2 14964 Lassen South side of road to Pittsville, 5.4 miles west of Little Valley Post Office. Northwest part of county. 0 Comment
  UC1108042  Carex specifica E. B. Copeland 1932-8-15 Lassen woods between Hat Lake and Summit Lake; Mount Lassen 1981 Comment
  CHSC114404  Carex spectabilis Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. About 1.8 air miles east of Diamond Mountain summitnand 0.3 mile west of end of Road 28N52A. 2225 Comment
  SEINET13709202  Carex spectabilis G. Schoolcraft 1997-8-6 2670 Lassen Diamond Mountain, N slope 2317 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
  CAS-BOT-BC116612  Carex subfusca Hans Leschke 1957-9-21 1528 Lassen Trail Butte Lake-Cinder Cove at cold spring. 1859 Comment
  RSA201855  Carex subfusca Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  CAS-BOT-BC115062  Carex vesicaria George Wilson Gillett 1957-7-22 879 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. 1850 Comment
  RSA275376  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  CAS-BOT-BC248944  Castilleja Mike Vasey 1990-6-30 9055 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CAS-BOT-BC248972  Castilleja Margaret M. Hanna 1956-6-3 942 Lassen 2 mi. west of Nubieber, Hiway 299 Comment
  CHSC64808  Castilleja angustifolia Vernon H. Oswald 1995-5-31 6801 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CHSC75539  Castilleja angustifolia Vernon H. Oswald; Lowell Ahart 1999-6-9 9746 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy 395, 0.2 mi east of the RR crossing at Karlo. Comment
  CHSC7630  Castilleja angustifolia Beverley J. Wise 1969-5-15 104 Lassen 28.1 mi. east of Susanville on Hwy 395. 1524 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
  RSA17674  Castilleja angustifolia Elmer I. Applegate 1934-5-4 8921 Lassen South of Secret Valley. Comment
  CAS-BOT-BC249611  Castilleja applegatei subsp. pinetorum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50645 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC249619  Castilleja applegatei subsp. pinetorum Alice Eastwood; John Thomas Howell 1940-6-15 8326 Lassen Grasshopper Valley Comment
  CAS-BOT-BC249623  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-10 12556 Lassen Black's Mt. 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
  SEINET10818435  Castilleja applegatei subsp. pinetorum Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 152 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  UC1012479  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25754 Lassen 5 mi n Madeline (Route 395) 1676 Comment
  UC1063040  Castilleja applegatei subsp. pinetorum H. P. Hagge 1929-9-12 25 Lassen Logan Mtn.; Eagle Lake Quad. 1828 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
  JEPS17631  Castilleja arachnoidea Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5409 Lassen 4.4 mi s Patterson Ranger Station (on e edge of Long Valley Meadow, s tip of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS28820  Castilleja arachnoidea Frances Payne 1929-7-12 83 Lassen between Camp 1 and Lost Lake (s end of Warner Range, e slope); Warner Range 2286 Comment
  UC1563850  Castilleja arachnoidea Barbara Ertter 1988-7-25 7861 Lassen ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville, ridge of Diamond Mts); Diamond Mts. 2286 Comment
  SEINET3836934 Image available Castilleja campestris Marcus E. Jones 1897-7-3 Lassen Pratville 1372 Comment
  CHSC60852  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1993-6-28 5575 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  JEPS126527  Castilleja lacera Lowell Ahart, John Dittes 2016-6-7 21021 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC1924577  Castilleja lacera Debra Valov 2006-5-29 2006028 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CHSC1714  Castilleja linariifolia 1944-7-5 Lassen Bogard. 1722 Comment
  JEPS10806  Castilleja miniata Brown and Wieslander 1922-7-23 67 Lassen Martin Springs; Eagle Lake Comment
  CHSC5901  Castilleja miniata subsp. miniata R. Gein 1946-6-22 Lassen Webb's Camp, Eagle lake. 1557 Comment
  CHSC6269  Castilleja miniata subsp. miniata J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  CHSC64895  Castilleja pilosa Vernon H. Oswald; Vernon H. Oswald 1995-6-26 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  RSA0037005  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-19 14879 Lassen East bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC116102  Castilleja tenuis Lowell Ahart; John Dittes 2015-7-13 20314 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
  CHSC60853  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1993-6-28 5576 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  JEPS124373  Castilleja tenuis Lowell Ahart, John Dittes 2015-7-13 20314 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1137685  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen Forest 1743 Comment
  UC1520675  Castilleja tenuis Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9483 Lassen 4.6 mi s Ravendale (U.S. Hwy 395) 1615 Comment
  UC199377  Castilleja tenuis Franklin P. Nutting 1894-7-21 Lassen near Eagle Lake Comment
  CAS-BOT-BC39554  Caulanthus major G. Schoolcraft 1981-7-7 591 Lassen Northwest of Susanville Peak. 2011 Comment
  JEPS123842  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2015-7-14 20329 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC48530  Ceanothus cordulatus A. M. Vollmer; L. Beane 1953-7-1 31 Lassen Along Halls Flat road, beginning 6 miles west of Susanville, to MacArthur 1554 Comment
  CAS-BOT-BC49071  Ceanothus cuneatus Alice Eastwood; J. T. Howell 1940-6-11 7992 Lassen Big Valley Mts. Comment
  CHSC7725  Ceanothus cuneatus Berverly J. Wise 1969-4-21 91 Lassen 2.6 mi. south of Susanville on the Old Dump Rd. 1341 Comment
  CHSC7727  Ceanothus prostratus Beverly J. Wise 1969-4-21 90 Lassen Approx. 2 mi. past Susanville old dump on old dump road. 1341 Comment
  SEINET10493654  Ceanothus prostratus Mary Merello 1993-6-28 Merello 748 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1071527  Ceanothus prostratus K. Bradshaw 1939-5-27 233 Lassen Black Mt. Experimental Forest - Plot 39-1, s end Lassen National Forest, Halls Flat Quad. Comment
  SEINET3814663 Image available Ceanothus prostratus R. A. Nelson 1963-9-14 7821 Lassen Near Westwood on way to Lassen Volcanic National Park from Susanville. Comment
  UC1736108  Ceanothus prostratus var. prostratus Dean W. Taylor 1974-7-13 4067 Lassen Lassen National Forest, Thousand Lakes Wilderness, vicinity of Magee Pk, T33N R3E SE1/4 Sect. 27 2484 Comment
  CHSC5047  Ceanothus velutinus L. B. Barlow 1967-7-1 64 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road. 1554 Comment
  UC1071531  Ceanothus velutinus A. Simontacchi 1940-6-4 797 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD130019  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen east side of Highway 395 to Madelaine, 1.6 mile north of Termo. Comment
  CAS-BOT-BC106074  Centaurea virgata subsp. squarrosa Barrett Anderson 1986-7-9 3128 Lassen Road to Day, about 2.4 km N of Rte 299. 1065 Comment
  CAS-BOT-BC279592  Centromadia pungens subsp. pungens Gordon H. True 1973-8-22 7656 Lassen North shore of Honey Lake, ca. 5 miles east of Janesville and just west of Hartson Reservoir 1219 Comment
  CAS-BOT-BC279595  Centromadia pungens subsp. pungens Gladys L. Smith; Margaret Williams; Loring Williams; Charles Smith 1983-9-15 8392 Lassen Along Lassen 3-A, the Susanville By-pass for Rte. 395 1219 Comment
  POM101579  Cerastium glomeratum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  POM89499  Cercocarpus ledifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 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
  JEPS94488  Cercocarpus ledifolius var. intermontanus Vernon H. Oswald and Lowell Ahart 1997-5-27 8513 Lassen 1.4 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling the road); Forest Route 38N04 1645 Comment
  JEPS112814  Chaenactis douglasii Dean W. Taylor 1974-6-14 3723 Lassen Plumas National Forest; Janesville Grade Road, at summit ca. 4 mi SSW of Janesville 1706 Comment
  CDA19743  Chaenactis douglasii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Between Ravendale and Secret Valley. 0 Comment
  CAS-BOT-BC276618  Chaenactis douglasii var. douglasii John Thomas Howell 1934-7-8 12497 Lassen Spalding's Eagle Lake Comment
  HSC81187  Chaenactis douglasii var. douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 5993 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC276617  Chaenactis douglasii var. douglasii John Thomas Howell 1976-7-20 52024 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles W of Fredonyer Pass 1432 Comment
  RSA748319  Chamaebatia foliolosa K. M. Meyer, A. Townesmith 2007-7-23 149 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CHSC36489  Chamaesaracha nana Theresa Costa 1982-6-4 38 Lassen Jct of rd e Murrers Upper Meadow and rd to Dry Lakes. Comment
  CHSC4446  Chamaesaracha nana K. R. Stern 1967-6-24 2411 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC27603  Chamaesyce serpillifolia subsp. serpillifolia Jerry Snodgrass 1978-7-25 Lassen Near Field Station (CSUC), E side of Eagle L., at wide spot in dirt road. 1554 Comment
  CHSC58840  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1992-7-16 5114 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. Beds of creek and reservoir. 1691 Comment
  JEPS121256  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-7-22 18855 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC17811  Chamaesyce serpyllifolia M. S. Baker and Frank Nutting 1894-7-24 Lassen Willow Creek 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
  HSC991  Cheilanthes gracillima H. E. Parks, S. T. Parks Jun 1928 262 Lassen Mt. Lassen National Park, Drakesbad 2134 Comment
  CAS-BOT-BC426341  Chenopodium John Thomas Howell 1962-6-19 37889 Lassen Sierra Nevada: Sagebrush Flat, 3 mi. S of Hallelujah Junction 1524 Comment
  UC1191355  Chenopodium berlandieri Verne Grant and Irving Schneider 1947-8-1 8229 Lassen irrigation ditch running sw into State Fish and Game nesting area on west end of Section 19; Madeline Plain Comment
  UC1191330  Chenopodium chenopodioides Malcolm A. Nobs and S. Galen Smith 1949-7-22 1071 Lassen Eagle Lake; ne shore Comment
  CAS-BOT-BC36276  Chrysolepis sempervirens Cain C. Brighton 1925-8-24 95 Lassen Mt. Lassen Volcanic National Park, 1 mi below Drakesbad 1645 Comment
  CHSC21064  Chrysolepis sempervirens M. S. Taylor 1975-7-16 842 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. Comment
  UC1135264  Chrysolepis sempervirens A. Simontacchi 1940-6-15 881 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 2164 Comment
  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
  SEINET3392549  Chrysothamnus nauseosus subsp. hololeucus E. D. McArthur 1982-1 EDM- 1358 Lassen NW of Janesville @ jct of CO ros 205 & 219 Comment
  UCD35728  Chrysothamnus viscidiflorus Beecher Crampton 1960-6-18 5709 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CHSC65295  Chrysothamnus viscidiflorus subsp. lanceolatus Vernon H. Oswald; Lowell Ahart 1995-8-14 7190 B Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville. Along this section of road. 1645 Comment
  CAS-BOT-BC105907  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC105908  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 1271 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CHSC71854  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald; Lowell Ahart 1998-9-8 9587 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  JEPS94839  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald and Lowell Ahart 1998-9-8 9587 Lassen Kramer Road 3.1 mi s of Lookout; Kramer Road 1280 Comment
  UC1776665  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1994-9-13 2430 Lassen Just above gate along road to Fredonyer Pk. lookout 2255 Comment
  UC1184293  Chylismia claviformis subsp. cruciformis Peter H. Raven and Otto T. Solbrig 1958-6-17 13269 Lassen along US Hwy 395 19.0 mi s Ravendale 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
  CDA38208  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  SEINET10940912  Cirsium Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 475 Lassen Approx. 2 mi. N of Susanville, across Calif. Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  CHSC23554  Cirsium andersonii W. O. Baum 1971-7-6 49 Lassen Slope of Gallatin Peak. 1981 Comment
  UC1136774  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spr. Exp. Range Lassen Forest 1825 Comment
  UCD159575  Cirsium arvense D. S. Park 2011-6-27 311 -2 Lassen East of Westwood. Growing near Willard Creek. Comment
  CDA1127  Cirsium canescens G. D. Barbe 1982-7-12 3875 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 Comment
  CDA1166  Cirsium cymosum T. C. Fuller 1959-7-7 2762 Lassen Hwy 395; 1.7 mi. south of Ravendale. 0 Comment
  CAS-BOT-BC278003  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, Hy. 299 Comment
  SD113205  Cirsium cymosum Darley F. Howe 1964-7-31 3947 Lassen Near east bank of Blue Lake, Warner Mountains, Modoc National Forest. 1890 Comment
  JEPS30610  Cirsium cymosum var. cymosum Peter H. Raven with Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  UC773846  Cirsium cymosum var. cymosum L. R. Short and Wm. Gansberg 1936-7-9 S- 479 Lassen Burgess Spring Experiment Range 1807 Comment
  UCD21445  Cirsium douglasii Don Lancaster 2002-9-1 s.n. Lassen Blue Lake. Comment
  JEPS30609  Cirsium douglasii var. breweri Peter H. Raven and Otto T. Solbrig 1958-6-17 13280 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  JEPS59280  Cirsium occidentale var. candidissimum W. L. Jepson 1918-8-2 7796 Lassen Honey Lake Valley 1219 Comment
  SEINET3082769 Image available Cirsium occidentale var. candidissimum N. 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
  UCD170227  Cirsium occidentale var. candidissimum K. M. Meyer; A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. 1.3 miles on road 110, off Highway A21. Mixed Pine and populus forest. Near Susan River. 1821 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
  CAS-BOT-BC280440  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 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
  CDA32840  Cirsium ochrocentrum CDFA Staff 1985-6-3 Lassen Madelaine Plains 0 Comment
  CAS-BOT-BC286304  Cirsium scariosum Alice Eastwood; John Thomas Howell 1940-6-11 7961 Lassen Eastern Fall River Valley Comment
  CAS-BOT-BC286306  Cirsium scariosum John Thomas Howell 1976-7-20 52025 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC286310  Cirsium scariosum James Jokerst 1983-7-25 1894 Lassen Near Madeline Plains 1614 Comment
  RSA186831  Cirsium undulatum T. C. Fuller 1966-7-22 14981 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC286515  Cirsium undulatum T. C. Fuller 1965-10-13 14201 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CHSC92753  Clarkia gracilis subsp. gracilis L. P. Janeway 2005-7-4 8465 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  JEPS108589  Clarkia gracilis subsp. gracilis L. P. Janeway 2005-7-4 8465 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41 1752 Comment
  CHSC91195  Clarkia lassenensis Lowell Ahart; John Dittes 2005-6-2 11951 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction. 1512 Comment
  UCD55291  Clarkia lassenensis Ellen Dean; Gary Schoolcraft 2006-5-16 3112 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  JEPS90014  Clarkia purpurea subsp. quadrivulnera Dean Wm. Taylor with Robert A. Price 1988-6-4 9770 Lassen 6 mi e of MacArthur (Fall River Valley along Highway 299 at crossing of Frazer Creek, Pit River Watershed); Fall River Valley, Highway 299 1036 Comment
  CHSC59759  Clarkia rhomboidea Mary Meyer 1980-8-5 Lassen 2148 Comment
  UC1122437  Clarkia rhomboidea A. Simontacchi 1940-6-23 885 Lassen 3.2 mi sw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC59559  Clarkia stellata Mary Meyer 1980-7-1 Lassen Along road traversing southern end of McCoy Flat. 1645 Comment
  CHSC80231  Clarkia stellata Jeanne Boze 1981-6-12 108 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 Comment
  CHSC83619  Clarkia stellata L. P. Janeway 2001-6-28 7233 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  SEINET5336402  Claytonia perfoliata subsp. intermontana J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin CA. Comment
  CAS-BOT-BC440042  Claytonia perfoliata subsp. perfoliata Louella Bass 1973-4-23 25 Lassen Elysian Valley. 1325 Comment
  CHSC99500  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2008-6-20 14910 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1136873  Claytonia rubra subsp. rubra L. R. Short and Wm. Gansberg 1936-6-2 S- 359 Lassen Burgess Spring Experimental Range; Lassen Forest 1865 Comment
  UC452681  Claytonia umbellata Milo S. Baker 1890-1 Lassen Milford Comment
  CHSC64778  Cleome platycarpa Vernon H. Oswald 1995-5-31 6805 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  CHSC7714  Cleome platycarpa Beverly J. Wise 1969-5-3 4 Lassen 4.7 mi east of junction of Hwy 395 on las. Co. Rd. 338 (Smoke Creek Rd.) 1554 Comment
  SEINET3153948  Cleome platycarpa J. L. Strother 1970-5-23 951 Lassen About 6 miles N of Honey Lake, at ca. 4200 feet elevation. 1280 Comment
  UC1537370  Cleome platycarpa Gordon H. True Jr. 1937-6-27 792 Lassen near Skeedaddle 1524 Comment
  CAS-BOT-BC32957  Cleomella alata C. C. (Mrs.) Bruce 1898-6-1 2364 Lassen Shumway Comment
  NY242101  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi. N. Wendel Rd. along Skedaddle Ranch Rd. 1463.0 Comment
  RSA294658  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  NY242079  Cleomella plocasperma R. F. Hoover 1940-9-29 4642 Lassen Litchfield. Comment
  UC1533121  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen about 1 mi w CA-NV stateline (along Smoke Creek Road) 1341 Comment
  JEPS94700  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9126 Lassen 5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  RSA0117250  Collinsia parviflora L. Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1032574  Collinsia parviflora K. Bradshaw 1939-5-27 229 Lassen Lassen National Forest, s end of Black Mountain Experimental Forest Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1752 Comment
  SEINET10548283  Collinsia parviflora Jeffrey Huber 1971-6-2 Huber 127 Lassen Approx 30 mi n of susanville, on calif hwy 139, in basalt, pinus artemesia Juniper assoc. 1646 Comment
  POM75605  Collomia grandiflora Marcus E. Jones 1897-6-26 10168 Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1137779  Collomia grandiflora August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest/Forest and Range Exp't Station 2133 Comment
  POM146293  Collomia grandiflora J. B. Feudge 1740 Lassen Bank of Susan River. Susanville Comment
  CHSC25914  Collomia tinctoria K. R. Stern 1967-7-1 2470 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  CHSC5005  Collomia tinctoria K. C. Newman 1967-7-2 59 Lassen Collected about 50 yds. NE of ELBS just beyond the men's dorm. 1554 Comment
  UC1123658  Collomia tinctoria A. Simontacchi 1940-5-28 778 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1567424  Comandra umbellata subsp. californica G. Schoolcraft 1989-6-7 1908 Lassen Shaffer Mountain near top Shaffer Mountain 2011 Comment
  NY704016  Conringia orientalis N. H. Holmgren 1980-7-3 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  HSC23535  Convolvulus arvensis L. G. Bennett 1967-7-17 180 Lassen Murrers Meadow, near Eagle Lake 1494 Comment
  JEPS124870 Image available Convolvulus arvensis Laurel Loeblich 1964-6-30 56 -2 Lassen 3 miles north of Hallelujah Junction (highways 40 and 395) on 395. Great Basin flora; pinion pine - juniper- sagebrush. Comment
  CAS-BOT-BC286115  Conyza canadensis Margaret Williams 1974-7-27 74 -L-44 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  POM33281  Conyza canadensis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  POM43084  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CHSC68861  Cornus sericea subsp. sericea Vernon Oswald; Lowell Ahart 1997-6-24 8611 Lassen South of Susanville on the north 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 boundary. 1889 Comment
  SEINET10739210  Cornus sericea subsp. sericea Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 839 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  UC581223  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1936-6-7 1763 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  UC773983  Crepis acuminata L. R. Short 1936-7-9 S- 509 A Lassen Burgess Spring Experiment Range Lassen <National> Forest 1818 Comment
  CHSC29884  Crepis bakeri Robin L. Ondricek 1978-7-15 98 Lassen On the ne and nw sides of Lower Dry Lake in the area where the trees begin. 1645 Comment
  CDA20365  Crepis intermedia D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Secret Valley. 0 Comment
  CAS-BOT-BC291572  Crepis modocensis subsp. modocensis G. L. Stebbins; J. A. Jenkins 1937-7-10 2277 Lassen Diamond Mt. 2286 Comment
  UC31338  Crepis occidentalis M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mts.; s side Comment
  UC581314  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2318 Lassen sw-facing slope about 1 mi below summit; Black Mountain 1940 Comment
  UC506906  Crepis occidentalis subsp. conjuncta George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 Comment
  CAS-BOT-BC376564  Crepis occidentalis subsp. occidentalis M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  CDA4444  Crepis occidentalis subsp. pumila T. C. Fuller 1963-6-1 10619 Lassen West side of road to Susanville, 2.0 mi. south of Pittville. 0 Comment
  UC296046  Crepis pleurocarpa E. B. Babcock and J. L. Collins 1926-7-21 89 Lassen 8 mi w Susanville (on hwy to Quincy) 1371 Comment
  CAS-BOT-BC299713  Crocidium Louella Bass 1973-4-22 23 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  UC1542943  Crocidium multicaule G. Schoolcraft 1987-4-29 1686 Lassen Ash Valley RNA 1554 Comment
  SEINET7838935 Image available Crocidium multicaule J. A. Young 1978-4-13 s.n. Lassen Adin, Meyers Ranch Comment
  UCD59985  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  SBBG19764  Cryptantha affinis C. B. Hardham 1961-6-17 7505 Lassen Baxter Crk, S of Susanville Comment
  UC1561921  Cryptantha ambigua Barbara Ertter with Gary Schoolcraft 1987-6-16 7199 Lassen on ne side Honey Lake (saddle on e side of Hot Springs Peak); Skeedaddle Mountains 2194 Comment
  CHSC5014  Cryptantha circumscissa L. G. Bennett 1967-7-5 111 Lassen Immediate vicinity of Eagle Lake Biological Station, Eagle Lake. 1554 Comment
  POM72292  Cryptantha circumscissa Marcus E. Jones 1897-6-18 7079 , 7076 Lassen Chat 1524 Comment
  RSA716061  Cryptantha circumscissa L. Ahart, John Dittes 2005-6-1 11890 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  UC1063881  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  SEINET10455878  Cryptantha circumscissa Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 879 Lassen Collected 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  CHSC47980  Cryptantha intermedia Vernon Oswald 1986-6-15 2113 Lassen Hwy 36, 15.0 mi e of Plumas-Lassen Co. line, 3.5 mi e of Fredonyer Pass. 1508 Comment
  SEINET8545993  Cryptantha intermedia var. grandiflora J. A. Young 1978-4-13 s.n. Lassen Adin, Meyers Ranch. Comment
  CDA40508  Cryptantha muricata Gary Schoolcraft 2000-6-19 2903 Lassen West of Cold Spring Velley. Comment
  POM72228  Cryptantha torreyana Marcus E. Jones 1897-6-19 6862 Lassen Chat 1616 Comment
  UC1037251  Cryptantha torreyana Leo Whitney 1934-7-5 1787 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  RSA123892  Cryptantha torreyana G. A. Fischer, I. Johnson 1933-7-12 F- 222 Lassen Near Sheep bedground. 1723 Comment
  SEINET10497288  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 267 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1562813  Cryptantha watsonii Barbara Ertter with Gary Schoolcraft 1987-6-16 7187 Lassen ne side Honey Lake (w of Hot Springs VABM); Skeedaddle Mountains 2133 Comment
  CHSC23497  Cuscuta Wayne O. Baum 1971-7-14 71 -63 Lassen Gallatin Peak. 2011 Comment
  CHSC43469  Cynoglossum occidentale Lowell Ahart; John Thomas Howell 1974-7-9 515 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  CAS-BOT-BC114167  Cyperus squarrosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49512 Lassen Elysian Valley, W of Janesville. 1325 Comment
  CHSC66868  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir SW of Westwood. Along the receding marshy edge of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  JEPS28326  Cyperus squarrosus George W. Gillett 1957-9-4 1125 Lassen e. margin of lower lake Widow Lake (near inlet); Lassen Volcanic Nat'l Park 2072 Comment
  UC569547  Cyperus squarrosus H. S. Yates 1936-8-11 6065 Lassen Baxter Creek Susanville Quad., Baxter Creek 1280 Comment
  NY703182  Dalea ornata A. Tiehm 1984-6-7 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest of Litchfield 1372 Comment
  CHSC5924  Damasonium californicum P. Balch 1955-6-25 Lassen Pine Creek, Eagle Lake. 1584 Comment
  HSC30066  Damasonium californicum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19182 Lassen Harvey Valley near Cone Springs Comment
  SBBG45003  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen overflow of Pitt River, 1 mi W of Bieber Comment
  UC527  Damasonium californicum J. Burtt Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  UC53341  Danthonia californica M. S. Baker and Frank Nutting 1894-7-2 Lassen Pine Creek Comment
  CHSC61076  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1993-8-3 5755 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC60866  Danthonia unispicata Vernon H. Oswald; Lowell Ahart 1993-6-28 5579 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  JEPS88200  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1996-6-17 7803 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UCD61329  Danthonia unispicata Beecher Crampton 1960-6-18 5721 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 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
  JEPS18992  Deinandra lobbii Rimo Bacigalupi with L. R. Heckard 1957-8-18 6060 Lassen 3.1 mi ne Bieber (along U.S. Highway No. 299, nw Lassen County); Big Valley 1249 Comment
  CAS-BOT-BC291779  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  JEPS95074  Delphinium andersonii Vernon H. Oswald and Lowell Ahart 1997-5-27 8511 Lassen n of Susanville (on Forest Rte 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat, 0.3 mi e of Hwy 139); Forest Rte 38N04 1560 Comment
  SEINET5337963  Delphinium andersonii F. B. Headley Unknown s.n. Lassen Honeylake, Calif. Comment
  CHSC6243  Delphinium depauperatum J. E. Wolf 1946-6-12 Lassen Eagle Lake. 1580 Comment
  CHSC36468  Delphinium nudicaule Jeffrey R. Peek 1982-6-3 29 Lassen Ca. .3 mi s jct of forest service roads 5.16 and 5.17, heading toward 5-corners. Comment
  CAS-BOT-BC116052  Delphinium nuttallianum Albert Michael Vollmer; L. Beane 1953-7-1 84 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC8562  Delphinium nuttallianum K. Stern 1967-7-1 Lassen Vic. Silver Lake. Comment
  UC1584004  Delphinium nuttallianum G. Schoolcraft 1990-5-15 2051 Lassen about 4 mi s Nubieber; John's Valley area 1310 Comment
  CAS-BOT-BC116049  Delphinium nuttallianum M. M. Hanna 1956-6-3 910 -913 Lassen Grassy slope above Hiway 299. 87.3 mi. E. of Redding, Calif. Comment
  UCD61119  Deschampsia cespitosa A. L. Hormay 1941-6-23 13 Lassen Lassen National Forest. Burgess Spring. 1676 Comment
  CAS-BOT-BC194261  Deschampsia cespitosa subsp. cespitosa John Thomas Howell; Gordon H. True 1973-8-1 50230 Lassen Headwaters of Boxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  POM114825  Deschampsia cespitosa subsp. cespitosa Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  JEPS107688  Deschampsia danthonioides Lowell Ahart, John Dittes 2005-6-1 11913 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS114873  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
  RSA185317  Deschampsia danthonioides Clare B. Hardham 1961-6-17 s.n. Lassen Baxter Creek, south of Susanville 1677 Comment
  UCD61878  Deschampsia danthonioides A. A. Beetle 1941-6-28 2799 Lassen 10 miles W of Chester. 1524 Comment
  CAS-BOT-BC201813  Deschampsia elongata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49467 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1131561  Deschampsia elongata A. Simontacchi 1940-7-3 919 Lassen 3.5 mi. w.-s.w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CHSC106682  Descurainia paradisa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  SEINET5343182  Descurainia paradisa var. paradisa F. B. Headley 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  UC1136915  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  RSA647568  Descurainia pinnata Marion P. Harthill 1971-6-21 228 Lassen Rovendale. Comment
  CHSC48325  Descurainia pinnata subsp. halictorum Vernon Oswald 1986-5-28 2053 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
  CHSC92655  Descurainia pinnata subsp. halictorum L. P. Janeway 2005-7-4 8466 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  CAS-BOT-BC43486  Descurainia sophia James Jokerst 1983-5-31 1790 Lassen Near Madeline Plains. 1583 Comment
  CHSC7705  Descurainia sophia Beverley J. Wise 1969-5-23 39 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  RSA0035397  Descurainia sophia Lowell Ahart, John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC500984  Dichelostemma multiflorum Ella Dales Cantelow 1940-5-31 3920 Lassen Hy. 299 E. of Mc Arthur Comment
  CAS-BOT-BC500986  Dichelostemma multiflorum H. D. Ripley; R. C. Barneby 1943-6-14 5750 Lassen West of Susanville 1310 Comment
  RSA598803  Dichelostemma multiflorum Christopher Davidson 1975-6-4 2630 Lassen Highway 299, ca 5 miles east of MaArthur. 1136 Comment
  SD132250  Dieteria canescens G. Helmkamp 1990-9-23 G 8 Lassen North of Ravendale. 1675 Comment
  CAS-BOT-BC299809  Dieteria canescens var. canescens G. Schoolcraft 1988-8-24 1858 Lassen 16 miles east of Adin 1645 Comment
  UC223695  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Money Lake Valley Comment
  CHSC98341  Dieteria canescens var. shastensis B. Castro; L. P. Janeway 2005-7-10 1504 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  UC1609238  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  CAS-BOT-BC290959  Dieteria canescens var. shastensis P. Monnet No date on label 789 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  CHSC63378  Dimeresia howellii V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6353 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  CAS-BOT-BC153677  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CAS-BOT-BC153678  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CHSC5908  Diplacus mephiticus W. Vinyard 1946-6-20 Lassen Eagle Lake. Label indicates small specimens- Mt. Fredonyer summit 7943'; large specimen- Grasshopper valley 5300'. 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
  CAS-BOT-BC208726  Distichlis spicata Malcom A. Nobs; S. Galen Smith 1949-7-22 1069 Lassen Northeast shore of Eagle Lake on drying shore. Comment
  CHSC115787  Distichlis spicata Lowell Ahart; John Dittes 2015-7-14 20333 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  CHSC31978  Distichlis spicata L. Ahart; J. T. Howell 1974-7-9 536 Lassen Along rd, 5 mi w of Susanville. 1584 Comment
  HSC9639  Distichlis spicata M. T. Milligan 1964-8-6 199 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC573727  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock 1341 Comment
  HSC86883  Dodecatheon alpinum K. R. Stern 1967-6-24 2403 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station 1555 Comment
  JEPS87428  Dodecatheon conjugens Vernon H. Oswald and Lowell Ahart 1993-5-12 5381 Lassen Forest Rd. 32N08 to Crater Lake 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, edge of meadowy opening along creek); Pine Creek 1737 Comment
  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
  UC1951077  Dodecatheon conjugens Debra Valov 2009-4-25 2009014 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UC559941  Dodecatheon conjugens Leo Whitney 1935-6-10 3211 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  CHSC29898  Dodecatheon jeffreyi Robin L. Ondricek 1978-7-7 92 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  CHSC4896  Dodecatheon jeffreyi Bill Wilson 1967-7-15 203 Lassen Collected at Upper Murrer Meadow, 2.5 mi. E of Eagle Lake Biological Station, 10 mi. N of Susanville. 1524 Comment
  UCR227662  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 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
  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
  RSA436116  Downingia bacigalupii Rockwell 1925-7-1 s.n. Lassen Eagle Lake 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
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  JEPS108508  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 228 -95 Lassen W sie of Rt. 395, 3.5 mi S of Madeline. Comment
  UCD58787  Downingia elegans Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  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
  HSC68798  Downingia laeta Gary Schoolcraft 1980-7-16 319 Lassen N end of Nelson Corral Reservoir area. 1805 Comment
  RSA0035918  Downingia laeta Lowell A. Ahart, John Dittes 2008-6-20 14928 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
  UCD149942  Downingia laeta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CHSC69125  Drosera anglica Vernon Oswald; Beth Corbin, Gary Schoolcraft 1997-8-5 8812 Lassen North slope of Robbers Creek at Robbers Spring, so ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  JEPS97330  Drosera anglica Vernon H. Oswald 1995-8-21 7216 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CHSC71071  Eatonella nivea Vernon H. Oswald; Lowell Ahart 1998-5-22 9122 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., 5 mi NE of Doyle. 1463 Comment
  CDA188  Echinochloa crus-galli O. W. Newman 1915-8-26 Lassen Susanville. 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
  JEPS121283  Elatine Lowell Ahart, John Dittes 2013-7-22 18882 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS123975  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20299 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA772751  Elatine californica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47212 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC29940  Elatine rubella Robin L. Ondricek 1978-7-5 93 Lassen At the edge of Mahogany Lake at the ne end. 2057 Comment
  RSA0011453  Eleocharis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46985 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC113563  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. Comment
  CHSC112798  Eleocharis macrostachya Lowell Ahart; John Dittes 2013-7-22 18848 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC96717  Elodea nuttallii Gordon Leppig 1998-7-13 970 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. Submersed near creek. 1970 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
  CHSC67076  Elymus cinereus Willis Ball 1969-6-25 39 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  JEPS123868  Elymus cinereus Lowell Ahart, John Dittes 2015-7-14 20327 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  SEINET10521751  Elymus cinereus var. pubens Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 888 Lassen 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  CAS-BOT-BC227487  Elymus elymoides Clarence R. Quick 1961-6-21 61 -29 Lassen Adjacent to Road 21, blacks Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  CHSC5256  Elymus elymoides subsp. elymoides P. Balch 1955-7-23 Lassen Stafford's Eagle Lake Resort. 1569 Comment
  UC593454  Elymus elymoides subsp. elymoides E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1742 Lassen e-facing slope of gully on mt. above Red Rock 1420 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
  JEPS126480  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-15 CA 350 -044 Lassen Throughout reservoir along right side of Horse Road when traveling North. Comment
  CDA31743  Elymus glaucus A. A. Beetle 1941-6-28 2803 Lassen Near Route 36, 10 miles west of Chester 0 Comment
  JEPS121261  Elymus glaucus Lowell Ahart, John Dittes 2013-7-23 18893 Lassen About 30 feet NE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC234094  Elymus multisetus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49447 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  UCD62499  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
  CHSC112797  Elymus repens Lowell Ahart; John Dittes 2013-7-23 18894 Lassen About 20 feet southwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCR17282  Elymus spicatus Frank C. Vasek 1975-7-11 750711- 32 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UC60832  Elymus trachycaulus M. S. Baker and Frank Nutting 1894-7-5 Lassen mts. s Dixey Valley Comment
  UCD32662  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  JEPS114765  Elymus trachycaulus subsp. subsecundus Lowell Ahart, John Dittes 2008-6-20 14908 Lassen about 100 yds W of where the levee road crosses Bog Valley Canal, in Big Valley, about 4 mi (air) NE of the Headquarters at Ash Creek State Wildlife Area, about 7 mi (air) NE of Bieber 1263 Comment
  UCD62694  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1932-7-1 Lassen Lassen National Forest. Bogard Ranger Station. Comment
  CHSC110307  Elymus triticoides L. P. Janeway; B. Castro 2012-7-2 10921 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
  UCR7840  Elymus virescens Marilyn Malin 1968-6-21 249 Lassen Above Pine Creek Fish Hatchery on the NW side of Eagle Lake. Comment
  CDA753  Ephedra viridis S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC89728  Epilobium brachycarpum L. P. Janeway 2004-6-26 8146 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
  SEINET12539614  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  RSA0011500  Epilobium brachycarpum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46975 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  RSA0039527  Epilobium campestre Lowell A. Ahart, John Dittes 2012-7-9 18285 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
  JEPS43851  Epilobium ciliatum subsp. ciliatum W. L. Jepson 1939-8-11 19378 Lassen Milford 1280 Comment
  NY1001463  Epilobium ciliatum var. ciliatum G. Schoolcraft 1990-7-11 2108 Lassen McKabe Spring north of Moon Lake 1669 Comment
  NY1001467  Epilobium ciliatum var. ciliatum M. A. Nobs 1949-8-20 1471 Lassen Honey Lake Valley, 1 mile south of Milford Comment
  CHSC106068  Epilobium densiflorum Lowell Ahart; John Dittes 2010-7-31 16994 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC113082  Epilobium densiflorum Lowell Ahart; John Dittes 2013-7-22 18878 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
  CHSC30611  Epilobium hallianum G. A. Brown 1975-7-7 1 Lassen Gallatin Peak, western slope. 1990 Comment
  CHSC99141  Epilobium torreyi Lowell Ahart; John Dittes 2008-6-19 14878 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
  NY1000570  Epilobium torreyi N. H. Holmgren 1980-7-3 9492 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 1700 Comment
  UC1122350  Epilobium torreyi A. Simontacchi 1940-6-30 905 Lassen 2.2 mi ene Ebey Lake 1699 Comment
  UC1523815  Epilobium torreyi Gary Schoolcraft 1981-6-9 439 Lassen s of Pittville 1249 Comment
  CAS-BOT-BC57099  Equisetum X ferrissii Margaret Williams; Louella Bass 1972-10-22 EV 8 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC57306  Equisetum laevigatum M. S. Taylor 1982-5-29 4566 Lassen the jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno Comment
  CHSC27602  Equisetum laevigatum Jerry Snodgrass 1978-7-8 58 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. 1499 Comment
  CHSC61944  Equisetum laevigatum Eenam Sin 1992-6-2 18 Lassen Murrers Meadow. 1524 Comment
  RSA0035920  Equisetum laevigatum Lowell A. 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
  JEPS124509 Image available Eremogone congesta L. Fleckenstein 1967-7-12 70 Lassen Collected 300 yds east of Hwy. 139, 15.2 Mi. S. E. of Adin, near Willow Creek Campground. Comment
  RSA0045087  Eremogone congesta Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC174202  Eremogone congesta var. congesta D. B. Dunn; B. J. Cox 1971-6-2 17755 Lassen Approx. 12 mi. S. of Adin on Calif. Hwy. 139 1371 Comment
  CHSC5228  Eremogone congesta var. simulans J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2421 Comment
  CHSC67078  Eremogone congesta var. subcongesta Jeanne Boze 1981-6-11 104 Lassen Along roadside, ca. 6 mi. from Hwy. 139 on Horse Lake Rd. 1737 Comment
  SEINET12875575 Image available Eremogone congesta var. subcongesta John Thomas Howell 1977-1 52401 Lassen North end of Eagle Lake 1585 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-BC159995  Eremothera boothii subsp. alyssoides Mrs. C. C. Bruce 1898-6-1 2139 Lassen Shumway Comment
  CHSC34596  Eriastrum signatum Robert A. Schlising 1978-7-1 3298 Lassen E of Eagle Lake, NE of Eagle L. Field Station. On lava flow from Black Mt. 1584 Comment
  JEPS69075  Eriastrum signatum W. L. Jepson 1918-8-2 7757 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC515172  Eriastrum signatum Louella Bass 1982-6-20 s.n. Lassen At cemetery gate, McKeasick Comment
  CAS-BOT-BC515175  Eriastrum signatum Rimo Bacigalupi; G. T. Robbins 1955-7-21 5417 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  CDA39986  Eriastrum signatum T. C. Fuller 1980-8-6 20323 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  RSA0124149  Eriastrum signatum Christopher Davidson 1975-6-7 2763 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA0125157  Eriastrum signatum Reino Alava 1957-7-5 1138 Lassen Along Highway no. 395, 4.25 miles S of Ravendale. Comment
  RSA0125158  Eriastrum signatum Marcus E. Jones 1897-6-22 9972 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  OBI77051  Eriastrum sparsiflorum Anthony Baniaga 2011-7-1 410 Lassen CDFB. Bass Hill Wildlife Area W of hwy 395. Janesville quad T29N R13E sec 19 SW of SW 1279 Comment
  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
  HSC69070  Ericameria bloomeri Gary Schoolcraft 1979-8-15 176 Lassen Tule Mtn. Area 2043 Comment
  UC1118663  Ericameria bloomeri H. P. Hagge 1929-9-11 15 Lassen Logan Mt. Eagle Lake Quad., Logan Mtn. 1828 Comment
  UC1776669  Ericameria bloomeri G. Schoolcraft 1994-9-13 2428 Lassen Just above gate along road to Fredonyer Pk. lookout 2255 Comment
  UC29712  Ericameria nauseosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3344 Lassen Honey Lake Valley Comment
  CAS-BOT-BC298963  Ericameria nauseosa var. hololeuca Ella Dales Cantelow 1938-10-23 2191 Lassen N of Doyle Comment
  CAS-BOT-BC298177  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298178  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  JEPS21524  Ericameria nauseosa var. oreophila W. L. Jepson 1918-8-4 7808 Lassen Horse Lake 1554 Comment
  OBI5655  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley; 3 mi from Wendel on the road to Janesville 1219 Comment
  CAS-BOT-BC294179  Ericameria nauseosa var. speciosa G. Schoolcraft 1994-9-13 2429 Lassen Just above gate along road to Fredonyer Peak lookout 2255 Comment
  CHSC66849  Ericameria nauseosa var. speciosa Vernon H. Oswald 1996-10-3 8295 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. On the edge of highway at Secret Creek. 1402 Comment
  UC1561814  Erigeron aphanactis var. aphanactis Barbara Ertter with Gary Schoolcraft 1987-6-16 7176 Lassen on ne side Honey Lake (e of road over saddle on w side of range); Skeedaddle Mountains 1645 Comment
  UC74068  Erigeron aphanactis var. aphanactis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Honey Lake Valley, Long Valley Comment
  CAS-BOT-BC293527  Erigeron aphanactis var. aphanactis P. Monnet 1913-7-6 809 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  CHSC27598  Erigeron bloomeri J. D. Prouty 1978-6-28 6 Lassen Lower Dry Lakes E of Eagle Lake. 1645 Comment
  JEPS41560  Erigeron bloomeri Franklin P. Nutting Lassen Dixey Valley Comment
  CAS-BOT-BC294490  Erigeron bloomeri var. bloomeri David D. Keck; J. Clausen 1935-6-24 3745 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC64864  Erigeron bloomeri var. bloomeri Vernon H. Oswald 1995-6-26 6917 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC67463  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of rodge N of drainage. 1584 Comment
  CHSC68733  Erigeron bloomeri var. bloomeri Vernon H. Oswald; Lowell Ahart 1997-5-27 8486 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  HSC81651  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  UC1536892  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-25 531 Lassen Harvey Ranger Station Harvey Valley 1706 Comment
  CAS-BOT-BC296849  Erigeron divergens John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49440 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  SEINET5708465 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  UC1536893  Erigeron divergens G. H. True Jr. 1936-6-21 516 Lassen roadside se Litchfield; Honey Lake Valley 1219 Comment
  UC74069  Erigeron divergens J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Honey Lake Valley, Long Valley Comment
  CAS-BOT-BC295977  Erigeron divergens Margaret J. Williams 1984-6-16 84- 31 -1 Lassen Doyle Grade, County Hwy 331 2.6 mi. W of Doyle Comment
  CAS-BOT-BC295978  Erigeron divergens Gary Schoolcraft 1984-9-4 1372 Lassen Fredomyer Mtn. 1737 Comment
  RSA78916  Erigeron divergens E. K. Balls, Percy C. Everett 1952-10-10 18144 Lassen 8 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  CAS-BOT-BC300372  Erigeron eatonii var. plantagineus John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50688 Lassen South and southeast of Diamond Mt. 2286 Comment
  UC1609229  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  CHSC72297  Erigeron filifolius L. P. Janeway; Glenn Clifton 1998-7-9 5739 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  POM32996  Erigeron filifolius Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CHSC5208  Erigeron filifolius var. filifolius 1946-6-14 Lassen Eagle Lake. 1584 Comment
  UCD131967  Erigeron glacialis var. glacialis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volc. Nat'l Park. 2286 Comment
  UC2027204  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen National Forest. N of 30N61, W of A21. Swain Mountain quadrangle Comment
  CHSC25547  Erigeron inornatus var. inornatus Robert A. Schlising 1974-7-19 3153 Lassen SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station. Comment
  CAS-BOT-BC295506  Erigeron linearis Mrs. C. C. Bruce 1898-6-1 21821 Lassen Madaline [Madeline] Plains Comment
  CHSC67165  Erigeron linearis James D. Jokerst 1991-5-29 3314 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  RSA0049610  Erigeron linearis Dean Wm. Taylor 2012-6-7 21231 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  HSC63962  Erigeron linearis Teresa Prendusi 1980-4-30 Lassen Upper slopes of Shaffer Mtn. 1738 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
  JEPS93827  Erigeron pumilus var. intermedius Vernon H. Oswald and Lowell Ahart 1998-6-4 9139 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  UC1609097  Erigeron pumilus var. intermedius Vernon H. Oswald and Lowell Ahart 1993-6-28 5578 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  UC87588  Erigeron pumilus var. intermedius T. S. Brandegee 1892-6-28 Lassen Jamesville Comment
  CAS-BOT-BC241570  Eriogonum baileyi var. baileyi John Thomas Howell 1955-7-19 30817 Lassen East side of Beckwourth Pass 1493 Comment
  SEINET3836451 Image available Eriogonum baileyi var. baileyi W. L. Jepson 1918-8-2 7772 Lassen Beckwith Pass 1463 Comment
  NY399607  Eriogonum baileyi var. baileyi E. K. Balls 1952-10-10 18139 Lassen 5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas 1280.2 Comment
  CHSC7738  Eriogonum caespitosum Beverley J. Wise 1969-5-3 78 Lassen 3.4 mi east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1584 Comment
  CAS-BOT-BC241878  Eriogonum cernuum R. F. Hoover 1940-10-5 4667 Lassen Wendel Comment
  UCR92117  Eriogonum cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  NY242503  Eriogonum collinum N. H. Holmgren 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale. Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  CAS-BOT-BC246498  Eriogonum douglasii var. meridionale H. D. Ripley; R. C. Barneby 1943-6-13 5712 Lassen South of Johnstonville 1325 Comment
  CHSC99120  Eriogonum douglasii var. meridionale Lowell Ahart; John Dittes 2008-6-19 14895 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC85900  Eriogonum douglasii var. meridionale T. S. Brandegee 1872-1 Lassen Susanville Comment
  RSA0065383  Eriogonum elatum M. P. Harthill 1972-6-16 s.n. Lassen Doyle. Comment
  NY281661  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel. Comment
  UC762681  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  SEINET10299463  Eriogonum maculatum W. L. Jepson 1918-8-5 Lassen Madelin Plains 1615 Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  NY572524  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-7-20 807 Lassen Lower slopes of Wagner Canyon 1402.1 Comment
  NY803458  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-26 2946 Lassen Slopes west of The Mark Store 6 miles southeast of Milford, CA - nw1/4 1320 Comment
  CAS-BOT-BC268790  Eriogonum nidularium Robert F. Hoover 1940-9-29 4643 Lassen Pass between Shaffer Mountain and Warren Peak Comment
  JEPS128413  Eriogonum nudum Catherine Bauer with Ellen Bauer Benson 2017-8-16 19 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UCD13226  Eriogonum nudum Janet Browder 1973-6-3 98 Lassen Lassen CO. Eagle Lake recreation Area, County Road 201, 1 mile north of airport. Elevation 5100 feet. 1554 Comment
  CHSC13456  Eriogonum nudum var. pubiflorum J. Pitts 1972-6-25 272 Lassen 30 yds. e of Papoose Creek on Road 4.25, on n side of road. S of Eagle Lake 1/4 mi. Comment
  UCR17292  Eriogonum nudum var. pubiflorum Frank C. Vasek 1975-7-11 750711- 40 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  NY282297  Eriogonum nummulare A. Tiehm 1978-10-14 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan. About 1.7 miles W of the Nevada Line. 1524.0 Comment
  SEINET530684  Eriogonum nummulare Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  CHSC12966  Eriogonum ovalifolium var. nivale K. R. Stern 1974-6-26 5864 Lassen Ca. 3 mi nw of intersection of Pittville Rd. with Hwy. 44, ca. 200 yds. ne of Poison Lake. 1700 Comment
  UC1609436  Eriogonum ovalifolium var. nivale Vernon H. Oswald and Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd.(33N02) 1.7 mi n Hwy 44 (e of Poison Lake, e side of Grays Valley); Grays Valley 1719 Comment
  UCD55294  Eriogonum ovalifolium var. ovalifolium Ellen Dean; Gary Schoolcraft 2006-5-16 3115 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  RSA0020051  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen National Forest. NW of intersection of 29N02Y and the ''B'' spur. 1630 Comment
  RSA0030656  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-9 439 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle. 1716 Comment
  HSC63562  Eriogonum prociduum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6027 Lassen Ash Valley, along branch road off Adin-Madeline road, 200 yds. from junction 1555 Comment
  POM105812  Eriogonum spergulinum var. reddingianum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC6621  Eriogonum spergulinum var. reddingianum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC272623  Eriogonum spergulinum var. reddingianum M. S. Baker; Frank Nutting 1894-1-1 s.n. Lassen Unspecified Comment
  UC303059  Eriogonum spergulinum var. reddingianum Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC86947  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7190 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
  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
  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
  CHSC106067  Eriogonum strictum var. anserinum Lowell Ahart; John Dittes 2010-7-31 16989 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
  UC85813  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  CAS-BOT-BC267889  Eriogonum umbellatum Hans Leschke 1964-9-3 1892 Lassen Cinder Cone, Lassen Volcanic National Park Comment
  CAS-BOT-BC267895  Eriogonum umbellatum A. M. Vollmer; L. Beane 1953-7-1 46 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC267892  Eriogonum umbellatum Margaret M. Hanna 1956-6-3 s.n. Lassen Near Hiway 299, 62 mi. E. of Redding Comment
  CAS-BOT-BC267816  Eriogonum umbellatum var. covillei Annie M. Alexander; Louise Kellogg 1942-8-21 3356 Lassen Below Golden Trout Resort, Cottonwood Creek, Cottonwood Lakes, southwest of Lone Pine, Sierra Nevada 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
  HSC17376  Eriogonum umbellatum var. modocense M. T. Milligan 1964-8-6 202 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS114751  Eriogonum umbellatum var. modocense Lowell Ahart, John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS56226  Eriogonum umbellatum var. modocense W. L. Jepson 1910-6-10 4115 Lassen King Creek 1676 Comment
  JEPS85788  Eriogonum umbellatum var. modocense Roy E. Buck, Robert A. Price 1988-6-26 1029 Lassen subsidiary peak ca. 0.5 air km n main summit (ca. 30 air km nne of Susanville); Fredonyer Peak 2377 Comment
  JEPS94469  Eriogonum umbellatum var. modocense Vernon Oswald and Lowell Ahart 1997-6-24 8640 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
  NY399204  Eriogonum umbellatum var. modocense G. Schoolcraft 1981-6-15 459 Lassen Ash Valley 1554.5 Comment
  RSA700052  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7189 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. 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
  CAS-BOT-BC265094  Eriogonum umbellatum var. nevadense Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16361 Lassen Near NE end of Eagle Lake Comment
  CAS-BOT-BC265096  Eriogonum umbellatum var. nevadense Louella Bass 1980-5-1 s.n. Lassen South side of Janesville on Hwy. 395, Sierra Nevada Comment
  RSA715993  Eriogonum umbellatum var. nevadense L. Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  UC1137677  Eriogonum umbellatum var. nevadense L. R. Short and J. Warren 1936-6-12 S- 432 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1804 Comment
  SEINET530706  Eriogonum umbellatum var. polyanthum Paul Opler 2008-7-7 Lassen Crater Lake Rd., 32N08. 1725 Comment
  RSA766453  Eriogonum ursinum C. Epling, Wm. Robinson 1935-7-17 s.n. Lassen Chaos Crags, Lassen Park Comment
  JEPS117563  Eriogonum vimineum Lowell Ahart, John Dittes 2010-7-31 17018 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
  POM195124  Eriogonum vimineum D. D. Keck 1930-7-23 951 Lassen Susanville. 1280 Comment
  RSA768781  Eriogonum vimineum L. Ahart, John Dittes 2010-7-31 17018 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  UC1032093  Eriogonum vimineum E. Sawyer 1935-6-27 240 Lassen 3.5 mi ne Beckwith Pass; Sierraville Quadrangle Comment
  UC1601757  Eriogonum vimineum T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC634595  Eriogonum vimineum Dorothy Tebbe 1929-8-1 18 Lassen along highway 1/4 mi n Susanville Comment
  UC6518  Eriogonum vimineum M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UCR245457  Eriogonum vimineum Elizabeth A. Kempton 2007-8-15 511 Lassen Janesville, intersection of Hwy 395 and Sunnyside Road 973 Comment
  CAS-BOT-BC262357  Eriogonum vimineum Mrs. H. C. Cantelow 1940-10-5 4177 Lassen N. W. of Johnsville Comment
  CAS-BOT-BC262358  Eriogonum vimineum M. S. Jussel 1931-9-6 s.n. Lassen On the road to Mt Lassen, five miles from Westwood 1828 Comment
  SEINET11933856  Eriogonum vimineum N. H. Holmgren, Holmgren, P. K. 1980-1 9493 Lassen Rye Patch Canyon Rd, 3.4 km (2.1m) E of US Hwy 395, 14.5 km (9mi) airline distance SE of Ravendale 1700 Comment
  CAS-BOT-BC300339  Eriophyllum Mike Vasey 1990-6-30 9058 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CAS-BOT-BC300340  Eriophyllum A. M. Vollmer; L. Beane 1953-7-1 42 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC12492  Eriophyllum lanatum Carol Weld 1969-6-20 9 Lassen Dean's Meadow. 1950 Comment
  RSA712892  Eriophyllum lanatum var. achilleoides L. P. Janeway 2005-7-3 8453 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
  SBBG61066  Eriophyllum lanatum var. achilleoides S. W. Hutchinson -Jun-1925 270 Lassen Eagle Lake region 1554 Comment
  UC1118375  Eriophyllum lanatum var. achilleoides A. Simontacchi 1940-6-23 887 Lassen 3.2 mi sw of Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle 1920 Comment
  UC604680  Eriophyllum lanatum var. achilleoides Farris Farris 1935-5-30 Lassen four mi se Susanville 1341 Comment
  UC773893  Eriophyllum lanatum var. achilleoides L. R. Short and J. Warren 1936-6-29 S 459 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1822 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
  CAS-BOT-BC301529  Eriophyllum lanatum var. integrifolium H. D. Ripley; R. C. Barneby 1943-6-13 5717 Lassen South of Johnstonville 1325 Comment
  CHSC60819  Eriophyllum lanatum var. integrifolium Vernon H. Oswald; Lowell Ahart 1993-6-28 5583 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  UC1609106  Eriophyllum lanatum var. integrifolium Vernon H. Oswald and Lowell Ahart 1993-6-28 5583 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  UC1130323  Erodium cicutarium A. Simontacchi 1940-6-8 832 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1924572  Erodium cicutarium Debra Valov 2006-5-29 2006022 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  POM83000  Eryngium alismifolium Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET8673719  Eryngium alismifolium Unknown 1958-7-22 5012 Lassen next to Highway 395 , 4.5 miles south of Ravendale Comment
  UC1487304  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UC1745690  Eryngium alismifolium Annetta M. Carter 1945-9-30 1716 Lassen W side of Eagle Lake. About 3 mi. S of Spaldings where road crosses bridge over dry creek. Comment
  UC648306  Eryngium alismifolium John Thomas Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  UC21010  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3374 Lassen Honey Lake Valley Comment
  CAS-BOT-BC40727  Erysimum capitatum Alice Eastwood; John Thomas Howell 1940-6-15 8319 Lassen Said Valley. Comment
  CAS-BOT-BC54588  Erysimum capitatum Al Simontacchi 1940-6-15 868 Lassen Lassen Forest. 0.6 miles west southwest of Black Mountains. 2133 Comment
  CAS-BOT-BC55197  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  CHSC60857  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1993-6-28 5610 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
  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
  CHSC5904  Erythranthe guttata M. West 1946-6-15 Lassen So. end Eagle Lake. 1584 Comment
  SD7073  Erythranthe lewisii Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CAS-BOT-BC153608  Erythranthe moniliformis John Thomas Howell; Gordon H. True 1973-7-31 50051 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  CAS-BOT-BC403146  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-16 8344 Lassen Janesville Comment
  JEPS127177  Eschscholzia californica subsp. californica Lowell Ahart, John Dittes 2016-7-15 21228 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  RSA0086578  Euphorbia Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  CHSC5248  Euphorbia crenulata L. Harman 1946-6-23 Lassen Eagle Lake. Near top of Roop Mt. 2133 Comment
  CDA14324  Euphorbia crenulata B. Corbin 1998-7-23 s.n. Lassen Lassen National Forest; Hwy 36, immed. E of junction w/Hwy 147, on Lassen NF. 0 Comment
  CDA35315  Euphorbia crenulata T. C. Fuller 1963-6-12 10666 a Lassen 0.1 mile east of Clear Creek, northeast shore of Lake Almanor. 0 Comment
  CDA35317  Euphorbia crenulata T. C. Fuller 1962-6-13 8997 a Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  JEPS127347  Euphorbia virgata Lowell Ahart, John Dittes 2016-7-13 21118 Lassen 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS31932  Eurybia radulina Duncan Dunning 1921-8-15 Lassen near, sw of Westwood Junction Facht; Robbers Creek Comment
  CAS-BOT-BC458296  Euthamia occidentalis Louella Bass 1980-8-1 s.n. Lassen Sierra Nevada: Standish Comment
  RSA712794  Festuca L. P. Janeway 2005-7-3 8460 Lassen High Cascade Range. At junction of road 22 and road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. NAD83. 1523 Comment
  CHSC118821  Festuca idahoensis L. P. Janeway; B. Castro 2015-6-5 11760 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; 104 air-km northwest of Mahogany Mtn. 1731 Comment
  POM203052  Festuca idahoensis J. T. Howell 1934-7-6 12448 Lassen Harvey Valley Comment
  POM203057  Festuca idahoensis J. T. Howell 1934-7-6 12430 Lassen Hall's Flat. Comment
  RSA0037004  Festuca idahoensis Lowell A. Ahart, John Dittes 2008-6-19 14880 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1776694  Festuca idahoensis G. Schoolcraft 1994-7-7 2374 Lassen About 1.5 mile NW of Boot Lake 2407 Comment
  UCD65970  Festuca idahoensis R. Tofsrud 1947-7-1 219 Lassen East of Madeline. Comment
  SBBG128880  Festuca idahoensis L. Ahart, J. Dittes 2008-6-19 14880 Lassen open hillside, ca. 100 yards E of Willow Crk, ca. 120 yards NE of Hwy 139, near Forest Rd 36N02, ca. 19.6 mi ESE of Bieber 1578 Comment
  UCD66339  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  UCD66360  Festuca rubra R. Tofsrud 1947-7-1 220 Lassen Cedar Cr. East of Madeline. Comment
  CAS-BOT-BC282537  Festuca viridula Parkison 1916-6-16 27231 Lassen North slope Crater Mountain, Lassen forest 1767 Comment
  JEPS19565  Floerkea proserpinacoides Milo S. Baker and F. P. Nutting 1894-6-15 Lassen Meadow in the Big Valley Mountains situated nw of Big Valley in which Bieber and Nubieber are located, northwestern Lassen County Big Valley; Big Valley Mountains Comment
  CHSC61058  Fragaria virginiana Vernon H. Oswald; Lowell Ahart 1993-8-3 5756 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the margin of the swamp. 1932 Comment
  CHSC6252  Fragaria virginiana P. Balch 1955-6-1 Lassen Stephens meadows. 1905 Comment
  UCD39134  Frasera albicaulis Beecher Crampton 1964-6-26 7083 Lassen 32 miles n.w. Susanville west end of Harvey Valley. Comment
  RSA367711  Fritillaria atropurpurea Christopher Davidson 1975-6-7 2727 Lassen 2.1 mi W of Westwood on Hwy 36. 1555 Comment
  CHSC60698  Fritillaria pudica Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5274 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  RSA304281  Fritillaria pudica James R. Shevock 1971-4-9 946 Lassen East of Dana, Highway 299 915 Comment
  HSC79827  Fritillaria recurva William E. Rodstrom 1975-5-23 Lassen Near Day in most NW township of Lassen, 0.5 mi. E of Cinder Pit Mine, N of Hwy. 299 1280 Comment
  CHSC25058  Galium aparine L. B. Barlow 1967-6-23 20 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  HSC63933  Galium bifolium Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak 2195 Comment
  SEINET11616108  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  CDA42121  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  CHSC66866  Galium trifidum var. pusillum Vernon H. Oswald; Lowell Ahart 1996-9-10 8275 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC23503  Gayophytum Wayne O. Baum 1971-7-12 71 -75 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC29944  Gayophytum Robin L. Ondricek 1978-6-14 54 Lassen 1.8 mi e of Coleman Lake Rd. on Lassen Co. Al. 1950 Comment
  CAS-BOT-BC478878  Gayophytum John Thomas Howell; Gordon H. True 1973-8-1 50206 Lassen Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville 2164 Comment
  JEPS128407  Gayophytum diffusum Catherine Bauer with Ellen Bauer Benson 2017-8-16 15 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  SBBG61277  Gayophytum diffusum subsp. parviflorum S. W. Hutchinson -Jun-1925 735 Lassen Eagle Lake 1554 Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  POM253026  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen About a mile east of Westwood. 1524 Comment
  UC1037290  Gentianella amarella subsp. acuta Leo Whitney 1934-7-24 1690 Lassen ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest 1737 Comment
  SEINET8588303  Gentianopsis simplex C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1037286  Gentianopsis simplex Leo Whitney 1934-7-26 1705 Lassen ca. 7 - 8 mi. s.w. Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen Nat'l Forest, Bridge Creek Camp 1737 Comment
  CHSC92757  Geranium viscosissimum L. P. Janeway 2005-7-4 8472 Lassen High Cascade Range. Gap/saddle 3.8 air km west of Harvey Mountain, at junction of Roads 35N04, 33N08, and 33N85. 1852 Comment
  CHSC5011  Geranium viscosissimum var. nervosum L. G. Bennett 1967-7-4 105 Lassen Deans Meadow, near Eagle Lake. 1706 Comment
  JEPS94471  Geum triflorum Vernon H. Oswald and Lowell Ahart 1997-5-27 8504 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling the road); Forest Route 38N04 1546 Comment
  UC506983  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  CHSC106676  Gilia inconspicua B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  JEPS94902  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen s of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); n side of Red Rock Road 1389 Comment
  UC1483794  Gilia leptomeria G. Schoolcraft 1980-5-7 220 Lassen n shore Honey Lake Island n shore of Honey Lake Island 1219 Comment
  CHSC7766  Gilia modocensis Beverley J. Wise 1969-5-18 76 Lassen 16.8 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1371 Comment
  RSA95716  Gilia modocensis Verne Grant 1955-6-8 9666 Lassen c. 2 miles north of Doyle. 1311 Comment
Read comments
May 2 2012
  UC1562812  Gilia salticola Barbara Ertter with Gary Schoolcraft 1987-6-16 7189 Lassen on s side Hot Springs VABM (ne side Honey Lake, Skeedaddle Mountains); Skeedaddle Mountains, s side Hot Springs VABM 2286 Comment
  POM74852  Gilia sinuata Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  JEPS96135  Glyceria borealis Vernon H. Oswald and Lowell Ahart 1996-6-24 7872 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  RSA0030654  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen National Forest. Poison Lake. 1700 Comment
  UCD66836  Glyceria elata John Thomas Howell; Gordon H. True, M. Williams 1973-6-28 49473 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 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
  CHSC99290  Gnaphalium palustre Lowell Ahart; John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  JEPS117581  Gnaphalium palustre Lowell Ahart, John Dittes 2010-7-31 16995 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
  JEPS28799  Gnaphalium palustre George W. Gillett 1957-9-4 1124 Lassen e margin of Widow Lake near inlet in drying mud Lassen Volcanic National Park, Widow Lake (on drying margin of pond about 100 yds w of Widow Lake) 2072 Comment
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  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
  HSC27351  Grayia spinosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19302 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  UC1136436  Grayia spinosa E. Sawyer 1935-6-27 226 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CAS-BOT-BC314597  Grindelia hirsutula John Thomas Howell 1976-7-19 51955 Lassen Southwest of Susanville on Gold Run Road, Sierra Nevada 1341 Comment
  CHSC37692  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
  CHSC7652  Grindelia squarrosa Beverley J. Wise 1968-8-28 20 Lassen 1.5 mi. north on Crazy Harry Canyon Road off Hwy 36 (Las. Co. Rd. no. 230). 1584 Comment
  UC1776686  Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Near turnoff to Janesville along Hwy 395 1280 Comment
  RSA719893  Gypsophila paniculata Michael A. Vincent, K. Levings 2006-7-29 112911 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  SEINET4173700  Habenaria leucostachys Marcus E. Jones 1897-1 Lassen Comment
  HSC69598  Hackelia californica Gary Schoolcraft 1980-7-15 310 Lassen W of Biebes 1799 Comment
  SEINET3928294  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0 1720 Comment
  UC1602195  Halogeton glomeratus Pryer and Fix 1948-8-17 Lassen Herlong Comment
  CHSC43613  Helianthus annuus Vernon Oswald 1986-8-7 2274 Lassen Hwy 36, 15.7 mi e of the Lassen-Plumas County line, 1.7 mi sw of the Susan River. Roadside. 1447 Comment
  CHSC4996  Helianthus annuus R. Clicquennoi 1967-7-1 62 Lassen 0.2 mi w of Murrer's Ranch turnoff, 14.9 mi n of Susanville, highway 139. 1463 Comment
  JEPS124644 Image available Helianthus annuus M. R. Kempf 1965-7-12 284 Lassen [...] miles south of Milburn on Hwy 395- Sierra Valley. Comment
  JEPS124645 Image available Helianthus annuus Michael D. Fleschner 1965-7-12 1965 -110 Lassen 2 miles south of MIlford, on Hwy 395. 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
  CHSC64756  Helianthus cusickii Vernon H. Oswald 1995-5-31 6798 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  JEPS25527  Helianthus cusickii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7141 Lassen beside Hwy 395 one-fourth mi s of junction road to Smoke Creek 1341 Comment
  RSA17683  Helianthus cusickii Elmer I. Applegate 1934-5-4 8927 Lassen South end of Secret Valley Comment
  CDA6549  Helianthus cusickii T. C. Fuller 1959-7-7 2910 Lassen Highway 395 and railroad, 5 miles north of road to Wendel. 0 Comment
  UC1051571  Helianthus nuttallii subsp. nuttallii Herbert L. Mason 1947-8-11 13492 Lassen w margin Lower Lake (Highway 81, n 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
  CAS-BOT-BC314967  Hemizonella minima John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49201 Lassen Elysian Valley northwest of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC314968  Hemizonella minima H. D. Ripley; R. C. Barneby 1943-1-13 5696 Lassen South of Milford 1569 Comment
  SEINET11119304  Heracleum lanatum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CHSC7686  Hesperochiron californicus Beverley J. Wise 1969-4-20 45 Lassen 14.6 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1463 Comment
  UC1178997  Hesperochiron californicus Herbert L. Mason 1949-4-16 13992 Lassen 2 mi. s. Standish Comment
  RSA122625  Hesperochiron pumilus L. R. Short 1936-4-28 S- 329 Lassen Harvey Valley. Lassen Forest. 1707 Comment
  RSA59814  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  JEPS27189  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1682 Lassen Hwy 395 just w Tule Mountain 1645 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
  UCD85294  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an sagebrush flat, along US Hwy 395, 1 mile east of Johnstonville. Comment
  POM68265  Heterocodon rariflorum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UCR244106  Heterotheca villosa Jim Andre, G. L. Clifton 1993-6-9 19697 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
  SD211542  Heterotheca villosa var. scabra Barbara Ertter 1987-7-24 7302 Lassen Circa 3/4 mile East-Northeast of Beckworth Pass at end of old crumbling paved road 1524 Comment
Read comments
Nov 24 2017
  CAS-BOT-BC425259  Heuchera rubescens P. Monnet 1913-7-4 830 Lassen S.E. de Lassen County Hot Springs Peak 1828 Comment
  POM36066  Hieracium albiflorum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC477493  Hieracium albiflorum A. G. Brenneis 1928-7-3 8 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  OBI75888  Hieracium albiflorum Anthony Baniaga 2011-8-16 500 Lassen Lassen Natl Forest. Just N of intersection 32N10H with F.S. 10. Red Cinder quad T30N R8E sec 18 NW of NW 1905 Comment
  UC1069594  Hieracium argutum H. P. Hagge 1929-9-18 39 Lassen Logan Mountain Eagle Lake Quad., Logan Mountain Comment
  CHSC98320  Hieracium greenei B. Castro; L. P. Janeway 2005-7-10 1505 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  OBI77185  Hieracium greenei Anthony Baniaga 2011-7-18 454 Lassen Lassen NF.2-1/4 mi ESE of Signal Butte. Swains Hole quad. T32N R6E sec 9 NE of SW 1700 Comment
  CAS-BOT-BC318716  Hieracium horridum Alice Eastwood 1912-9-1 2056 Lassen Mount Shasta Comment
  HSC103617  Hieracium horridum Thomas W. Nelson, Jane Nelson 1985-8-10 8020 Lassen Along west side of Silver Lake. 1829 Comment
  CDA7975  Hieracium scouleri T. C. Fuller 1963-7-15 12904 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  UC1523774  Hieracium scouleri Gary Schoolcraft 1981-7-8 500 Lassen w of Eagle Lake; Coulthurst Flat 1828 Comment
  CHSC75503  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1999-6-9 9737 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395, springy marsh surrounded by sagebrush scrub. 1353 Comment
  JEPS124841 Image available Hippuris vulgaris Joe Ammirati 1964-6-30 73 Lassen N. of Susanville 17 mi. on High. 139. Comment
  CHSC112406  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18728 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS87501  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  POM352505  Hordeum arizonicum A. A. Beetle 1941-6-28 s.n. Lassen 6 mi south of Ravendale, Lower slopes of Observation Peak Comment
  UCD85482  Hordeum brachyantherum L. Whitney 1935-3-28 Lassen Fruit Growers Supply Co. Camp #10. Comment
  UC1024802  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1935-6-23 3291 Lassen Camp 10 Fruit Grower's Supply Company Lassen National Forest Comment
  POM112122  Hordeum brachyantherum subsp. californicum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CHSC99515  Hordeum jubatum Lowell Ahart; John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  CAS-BOT-BC289574  Hordeum marinum subsp. gussoneanum John Thomas Howell 1973-7-10 49804 Lassen Near Susanville on road to Jonesville, Sierra Nevada 1295 Comment
  JEPS114764  Hordeum murinum subsp. leporinum Lowell Ahart, John Dittes 2008-6-20 14915 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC157367  Horkelia fusca Clare B. Hardham 1961-6-17 7503 Lassen Baxter Creek south of Susanville Comment
  JEPS74735  Horkelia tridentata subsp. flavescens G. S. Crew and C. S. Robinson 1927-6-25 24 Lassen near Wetwood Junction; Lassen Forest, Norval Flat 1442 Comment
  CHSC71324  Horkelia tridentata subsp. tridentata Vernon H. Oswald 1998-6-22 9229 Lassen Champs Flat Rd. (A-21) 1.6 mi north of Hwy. 44, ca. 18 air mi north of Westwood. 1764 Comment
  CHSC65301  Hornungia procumbens Vernon H. Oswald; Lowell Ahart 1995-8-14 7202 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) on the E side of Horse Lake, 13.5 mi W of Hwy. 395, N of Susanville. On the shore of the lake. 1560 Comment
  SEINET5342520  Hornungia procumbens A. Tiehm 1980-1 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs, 1.1 air miles NNW of Wendel. 1231 Comment
  UC1567386  Hydrophyllum capitatum var. alpinum G. Schoolcraft 1989-5-8 1872 Lassen about 1 mi e Silva Flat Reservoir 1737 Comment
  SEINET5518818  Hydrophyllum occidentale var. watsonii C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  POM66398  Hymenoxys lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC19030  Hypericum anagalloides M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC5007  Hypericum formosum var. scouleri L. G. Bennett 1967-7-8 123 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC66726  Hypericum formosum var. scouleri Vernon H. Oswald; Lowell Ahart 1996-8-1 8127 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. Common on a wet, open meadowy slope in mixed coniferous forest on the downhill side of the road. 1737 Comment
  JEPS66829  Hypericum formosum var. scouleri Brown and Wieslander 1922-7-30 28 Lassen Eagle Lake, Martin Springs Comment
  SD130459  Hypericum formosum var. scouleri John Thomas Howell, Gordon H. True and Margaret Williams 1973-6-28 49436 Lassen Elysian Valley, west of Janesville. 1326 Comment
  CHSC7707  Idahoa scapigera Beverley J. Wise 1969-4-10 37 Lassen 1.5 mi. north on Hwy 139. 1341 Comment
  CAS-BOT-BC88640  Idahoa scapigera G. Schoolcraft 1995-4-19 2465 Lassen Southwest of Susanville at west side of Susan Hills. 1341 Comment
  CDA24887  Idahoa scapigera T. C. Fuller 1963-6-1 10640 a Lassen 0.25 mile north of Willow Springs Campground, 3.1 miles southeast of Pittville-Susanville Road, 12.4 miles (road) south of Pittville. 0 Comment
  HSC69298  Idahoa scapigera Gary Schoolcraft 1980-4-8 203 Lassen E side of Schaffer Mtn., 0.25 mi. W of Hwy. 395 1463 Comment
  JEPS128411  Iliamna bakeri Jennifer Mueller 2017-8-15 CA 370 -263 Lassen Below Tuledad Valley Ranch take the access road into the Cottonwood Mountains towards the Dodge Fire. Comment
  UCD126378  Iliamna bakeri Richard R. Halse 2004-7-8 6615 Lassen Along State Highway 139, around 6 miles north of Eagle Lake. 1710 Comment
  CHSC23502  Ipomopsis aggregata subsp. formosissima Wayne O. Baum 1970-6-30 70 -1 Lassen E. slope of Gallatin Peak. 1981 Comment
  RSA18257  Ipomopsis aggregata subsp. formosissima Wolf 1929-9-1 3785 Lassen Mt. Lassen National Park between Grassy Lake and Snag Lake Comment
  UCR183236  Ipomopsis depressa Jim Andre, G. L. Clifton 1993-6-2 7719 Lassen Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns 1243 Comment
  UCD138823  Iris tenuissima Michael A. Vincent 1999-6-9 8586 Lassen Along US Rt. 44, ca. 1 mile west of Viola, 13 miles east of Shingletown. 1524 Comment
  UC2013402  Isatis tinctoria Debra Valov 2012-6-19 1116 Lassen Just S of junction of Co. Road 87 A at Co. Road 87. Comment
  CHSC60804  Isoetes howellii Vernon H. Oswald 1993-6-28 5622 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  CHSC60707  Isoetes nuttallii Vernon H. Oswald; Lowell Ahart 1993-6-3 5476 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
  JEPS88085  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1996-6-24 7848 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of the cabins); Modoc Plateau 1633 Comment
  CAS-BOT-BC324779  Iva axillaris M. S. Taylor 1982-8-19 5022 Lassen E side of Highway 395 ca. 4 miles north of its junction with Highway 70 at Hallalujah Junction 1493 Comment
  RSA523308  Iva axillaris subsp. robustior Gordon H. True Jr. 1936-6-21 517 Lassen SE of Litchfield, Honey Lake Valley. 1220 Comment
  UC1069681  Iva axillaris subsp. robustior E. Sawyer 1935-6-27 221 Lassen Long Valley; Sierraville Quadrangle Comment
  CHSC63416  Ivesia paniculata V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6352 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  RSA614443  Ivesia paniculata M. L. Carlson 1996-6-11 s.n. Lassen 16 miles southeast of Adin on County Road 527 Comment
  CAS-BOT-BC109935  Juncus John Thomas Howell 1976-7-19 51988 Lassen Sierra Nevada. On Gold Creek southwest of Susanville. 1386 Comment
  SEINET3877676  Juncus bufonius Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9467 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi) south of Madeline.; 0 1620 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
  CHSC113074  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2013-7-23 18907 Lassen On the southwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA129410  Juncus dubius H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow. 1524 Comment
  CHSC108000  Juncus hemiendytus var. hemiendytus Lowell Ahart; John Dittes 2011-6-20 17480 Lassen About 15 yards west of the stream, about 40 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
  JEPS94376  Juncus hemiendytus var. hemiendytus Vernon Oswald and Lowell Ahart 1997-6-24 8653 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
  POM110628  Juncus macrandrus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS28706  Juncus nevadensis George W. Gillett 1957-7-28 934 Lassen Widow Lake Lassen Volcanic National Park 2072 Comment
  JEPS87450  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  UC1609497  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  JEPS103213  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen North slopes of Skedaddle Mountains 1828 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
  UCD168847  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley. 1740 Comment
  SD139428  Juniperus grandis F. C. Vasek 1962-9-3 day 2 Lassen State highway 36, 3.6 miles west of Ranger Station, west of Susanville 1525 Comment
  UC1134300  Juniperus occidentalis A. Simontacchi 1940-6-5 820 Lassen 8.0 mi wnw of Harvey Valley Ranger Station; Halls Flat Quad., Lassen National Forest Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
Read comments
Apr 29 2013
  SEINET10966161  Juniperus occidentalis Mary Susan Taylor 1974-5-4 Taylor 217 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
  CHSC60293  Juniperus occidentalis var. occidentalis Mary Ann Showers 1992-6-13 2531 Lassen East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. Lassen Volcanic National Park. 1841 Comment
  SD139404  Juniperus osteosperma F. C. Vasek 1964-9-12 day 6 Lassen U. S. 395, 5.2 miles north of its junction with State Highway 70 (U. S.40) 1480 Comment
  HSC69049  Kelloggia galioides Gary Schoolcraft 1979-7-3 111 Lassen 4.3 mi. up the road from Observation Peak 2134 Comment
  UC1024950  Koeleria macrantha Leo Whitney 1935-6-28 3316 Lassen ca 13 mi w of n end Eagle Lake (Squaw Valley); , w of n end Eagle Lake Comment
  UC1136815  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-8-3 F 278 Lassen Lassen Forest, <Lassen National Forest> 1737 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
  CHSC59078  Lactuca serriola Vernon H. Oswald; Lowell Ahart 1992-8-25 5190 Lassen Lassen Volcanic National Park. West shore of Snag Lake near the islands. 1851 Comment
  RSA0009789  Lactuca tatarica var. pulchella Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC341483  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CHSC64767  Lappula redowskii var. cupulata Vernon H. Oswald 1995-5-24 6767 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  JEPS125806  Lappula redowskii var. cupulata William Harnach 2010-6-1 1240 Lassen Approximately 10 miles NE of Doyle on Fort Sage Road then 1 mile N on Cal -Neva Road. Honey Lake Valley. Comment
  CHSC7669  Lathyrus brownii Beverley J. Wise 1969-5-9 58 Lassen 10.5 mi West of Susanville on Forest service rd. no. 8246 off Hwy 36. 1615 Comment
  CAS-BOT-BC321496  Layia glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, S of Susanville. Comment
  CHSC106572  Layia glandulosa Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC5215  Layia glandulosa 1944-6-28 Lassen Eagle Lake. 1584 Comment
  JEPS87525  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  SEINET11447828 Image available Layia glandulosa F. B. Headley 1915-5-28 s.n. Lassen Honey lake Comment
  CAS-BOT-BC321494  Layia glandulosa John Thomas Howell 1962-6-19 37888 Lassen Sagebrush flat, 3 mi S of Hallelujah Junction 1524 Comment
  SEINET11447818 Image available Layia glandulosa M. S. Baker 1905-1 s.n. Lassen Dixey Valley Comment
  SEINET11807266  Layia glandulosa N. H. Holmgren, Holmgren, P. K. 1980-1 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  RSA164325  Layia glandulosa subsp. glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, south of Susanville. Plants of the Sierra Nevada Mountains. Comment
  JEPS89219  Lemna minuscula Mrs. R. M. Austin June, 1894 Lassen Cold Springs, Willow Creek Valley Willow Creek Valley; North East California, Cold Springs, Willow Creek Valley Comment
  UCR47477  Lepidium draba Don Pendleton 1986-6-24 s.n. Lassen 5 miles south of Termo on Hwy 395 1617 Comment
  UCR67374  Lepidium latifolium George K. Helmkamp 1990-9-23 A- 4 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UCD115696  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen 75 sq. ft. infestation on east side of road, Hwy 395 to Litchfield, 4.7 miles south of Ravendale, Madelaine Plains. Comment
  CHSC111251  Lepidium perfoliatum L. P. Janeway; B. Castro 2012-7-2 10936 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  JEPS114647  Lepidium perfoliatum Lowell Ahart, John Dittes 2008-6-20 14934 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS17738  Lepidium perfoliatum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5420 Lassen 6.8 mi e Smoke Creek Ranch Rd. jct with U.S. Hwy 395 (along Smoke Creek Ranch Rd, center of Bull Flat); Bull Flat 1402 Comment
  UCD115849  Lepidium perfoliatum R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. Comment
  CAS-BOT-BC12987  Lepidium virginicum John Thomas Howell 1974-7-10 50531 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC117207  Leptosiphon bolanderi Lowell Ahart; John Dittes 2016-6-7 20979 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC25423  Leptosiphon harknessii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19252 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC508369  Leucocrinum montanum Louella Bass 1973-4-29 31 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  HSC63766  Leucocrinum montanum Teresa Prendusi 1980-5-6 Lassen W side of SR 395, 0.25 mi. from old gas station 1616 Comment
  POM71468  Leucophysalis nana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC1037094  Leymus cinereus Leo Whitney 1933-7-16 2207 Lassen ca 16 mi w upper end of Eagle Lake; Lassen National Forest, Harvey Mountain Comment
  UC1609507  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  SEINET239966 Image available Leymus triticoides G. L. Clifton 1996-6-5 34629 Lassen East of Herlong close to the railroad. 1234 Comment
  UC1542930  Leymus triticoides G. Schoolcraft 1987-6-3 1719 Lassen Painter Flat; w side 1706 Comment
  POM109714  Lilium pardalinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC60774  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1993-6-14 5508 Lassen Lassen A21 (32N02), 5.3 mi E of Lassen 105 (32N28Y), near Summit Camp, ca. 7 mi (air) W of Eagle Lake. 1889 Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  JEPS96128  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, edge of Papoose Creek where it leaves the N end of the meadow 1633 Comment
  CHSC1262  Linanthus pungens K. Chew 1954-7-6 Lassen North end of Eagle Lake. 1616 Comment
  UC1130238  Linum lewisii A. Simontacchi 1940-6-8 841 Lassen 4.1 mi e of Halls Flat Ranger Station (Lassen National Forest); Lassen National Forest 1737 Comment
  CAS-BOT-BC435429  Lithophragma glabrum Louella Bass 1974-4-16 EV 149 Lassen Elysian Valley; Sierra Nevada 1325 Comment
  UC1483825  Lithophragma glabrum G. Schoolcraft 1980-4-8 201 Lassen e side Shaffer Mountain; e side Shaffer Mountain 1463 Comment
  CAS-BOT-BC428423  Lithophragma tenellum John Thomas Howell 1934-6-14 12129 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC11773  Lithophragma tenellum Wayne O. Baum 1971-6-15 71 -1 Lassen South side of fire trail approx. 100 ft. from Rd. 5 at extreme S. E. corner of Gallatin Peak. 1920 Comment
  UC496334  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen between Susanville and Janesville Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  JEPS119670  Lithospermum arvense Lowell Ahart, John Dittes 2012-7-11 18351 Lassen About 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittvile, 3955 feet east of Lassen - Shasta County Line, Fall River Valley. Comment
  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
  POM101211  Loeflingia squarrosa Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC66229  Lomatium bicolor var. leptocarpum Vernon H. Oswald 1996-6-24 7855 Lassen Papoose Meadows located ca.0.5 mi E of Eagel Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 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
  JEPS15825  Lomatium bicolor var. leptocarpum M. S. Baker and Franklin P. Nutting 1894-6-20 Lassen near Bieber (Big Valley); Big Valley Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  UC1123089  Lomatium bicolor var. leptocarpum A. Simontacchi 1940-5-14 710 Lassen 10.2 mi E of Coyote Spring 1699 Comment
  UC1587046  Lomatium bicolor var. leptocarpum G. Schoolcraft 1991-6-4 2145 Lassen n. end Eagle Lake (e. of Hwy. 139) 1615 Comment
  CHSC77178  Lomatium canbyi G. Schoolcraft 1993-4-27 2255 Lassen Ash Valley RNA/ACEC. 1554 Comment
  RSA452590  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC67146  Lomatium macrocarpum James D. Jokerst 1991-5-29 3308 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  UCR183199  Lomatium macrocarpum Jim Andre, G. L. Clifton 1993-6-2 7717 Lassen Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns 1243 Comment
  UC1123085  Lomatium nevadense var. parishii A. Simontacchi 1940-5-27 768 A Lassen 9.3 mi NW of Crater Lake 1752 Comment
  UC773965  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  CHSC42626  Lomatium nudicaule Vernon Oswald 1986-5-28 2047 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC72293  Lomatium plummerae L. P. Janeway; Glenn Clifton 1998-7-8 5721 Lassen Ridgetop saddle about 2.5 mi northwest of Red Rock; at junction of Roads 28N08,19N10, 213, and 28N55. Top of north-facing Wyethia opening in open yellow pine forest. 1988 Comment
  UC671788  Lomatium plummerae Dan Tillotson 1942-6-10 Lassen four mi s Madeline Comment
  CHSC68607  Lomatium ravenii Vernon H. Oswald; Lowell Ahart 1997-5-7 8404 Lassen Smoke Creek Ranch Rd. 2.9 mi east of Hwy. 395. 1359 Comment
  HSC69063  Lomatium ravenii Gary Schoolcraft 212 Lassen N of Shaffer Mountain 1357 Comment
  JEPS25531 Image available Lomatium ravenii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7145 Lassen 2 mi. s. Ravendale 1615 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
  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
  JEPS103208  Lomatium triternatum var. macrocarpum G. Schoolcraft 1993-6-29 2315 Lassen Ash Valley RNA 16 miles E of Adin 1554 Comment
  SEINET11130700  Lomatium triternatum var. platycarpum N. H. Holmgren, P. K. Holmgren 1978-6-11 8930 Lassen Upper Smoke Creek, S side of Observation Peak, 7.6 km (4.7 miles) NE of Rye Patch Canyon summit, 18.5 km (11.5 miles) airline distance ESE of Ravendale. 1700 Comment
  CHSC112137  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21244 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 air miles S of Adin). 1722 Comment
  RSA0049637  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21245 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin) 1706 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
  UC1187701  Lomatium vaginatum Tracey and Viola Call 1961-5-30 2049 Lassen Horse Lake Road 1/8 mi w of jct with 395 about 1 1/2 mi s Ravendale; Horse Lake Road 1463 Comment
  UCD55281  Lomatium vaginatum Ellen Dean; Gary Schoolcraft 2006-5-16 3100 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1207 Comment
  CHSC25905  Lotus K. R. Stern 1967-8-1 2436 Lassen California State Hwy. 139, 14 mi. N of Susanville. Comment
  JEPS107457  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2005-6-2 11970 -A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  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
  UCD169260  Lotus uliginosus S. L. Welsh; N. D. Atwood 2001-6-14 28145 Lassen Secret Valley Spring, at Cherry Creek rest stop, Hwy 395. 1520 Comment
  RSA715662  Lotus unifoliolatus L. Ahart 2005-6-2 11970 -A 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
  POM253309  Lotus unifoliolatus A. A. Heller 1938-7-28 15300 Lassen Just east of Westwood. Comment
  CHSC113075  Ludwigia palustris Lowell Ahart; John Dittes 2013-7-23 18904 Lassen Dry drainage, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC65101  Lupinus angustiflorus Vernon H. Oswald; Lowell Ahart 1995-7-24 7131 Lassen High Cascade Range. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just of Pine Creek. 1950 Comment
  SEINET5327708  Lupinus arbustus J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA Comment
  NY732864  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1985-6-12 1417 Lassen 1/2 mile south of Cleghorn Flat 1890 Comment
  CHSC106689  Lupinus argenteus B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UCD35223  Lupinus argenteus var. argenteus Beecher Crampton 1954-7-6 2079 Lassen Madeline. 1524 Comment
  CAS-BOT-BC208737  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21501 Lassen Reserboir above Grasshopper Valley, Lassen Forest 1500 Comment
  CAS-BOT-BC208738  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21510 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CAS-BOT-BC208761  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47443 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CHSC909  Lupinus argenteus var. heteranthus L. Harman 1946-6-22 Lassen Webb's camp, Eagle Lake. 1554 Comment
  NY736929  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 miles west of Doyle Comment
  NY736932  Lupinus argenteus var. heteranthus J. Huber 1971-6-2 140 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  SEINET5327973  Lupinus argenteus var. heteranthus M. J. Williams 1974-7-29 74 -L-58 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 50 1494 Comment
  UC127527  Lupinus argenteus var. heteranthus J. Burtt Davy Jun 17-24, 1897 Lassen Honey Lake Valley 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
  UCD106819  Lupinus argenteus var. heteranthus Grady L. Webster 1989-5-13 7712 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CHSC106591  Lupinus argenteus var. meionanthus C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  JEPS107915  Lupinus argenteus var. meionanthus Lowell Ahart, John Dittes 2005-6-2 11937 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  SEINET10484990  Lupinus brevicaulis Gary Schoolcraft 1980-5-30 Schoolcraft 246 Lassen Lassen co. T31n, r15e, se1/4, sec. 11. Elev. 4460'. On s side of rd. Into Diaz ranch at n end of mud flat. Associated with artemisia tridentata, Chrysothamnus spp., Sitanion hystrix. 1359 Comment
  SEINET10450525  Lupinus confertus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in a field near Susanville. 1298 Comment
  NY747209  Lupinus lepidus var. confertus G. Schoolcraft 1983-6-29 1039 Lassen Coulthurst Flat 1890 Comment
  HSC103613  Lupinus lepidus var. confertus Thomas W. Nelson, Jane Nelson 1981-7-17 6735 Lassen Along State Route 395, 22 mi. S of Susanville at milepost 46.80 Comment
  CHSC91526  Lupinus lepidus var. sellulus L. P. Janeway 2005-7-4 8474 Lassen High Cascade Range. Along Road 33N02 in Windy Gap; meadow between Harvey Valley and Grays Valley. 1696 Comment
  CHSC99124  Lupinus lepidus var. sellulus Lowell Ahart; John Dittes 2008-6-19 14886 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  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
  UC82212  Lupinus lepidus var. sellulus Mrs. R. M. Austin Aug 1882 Lassen Kings Valley Comment
  SEINET10841246  Lupinus lyallii var. lyallii Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park, near the peak. In dry ground. Comment
  RSA715929  Lupinus meionanthus L. P. Janeway, B. Castro 2005-7-10 8477 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 and 28N02) and Road 28N01. 1859 Comment
  JEPS126528  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2016-6-7 21018 Lassen On the west edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  HSC76493  Lupinus polycarpus B. J. Cox, Paul Gallian 1971-6-2 2576 Lassen 6 mi. S of Adin, along Hwy. 139 right-of-way 1372 Comment
  SEINET10871082  Lupinus polycarpus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2576 Lassen 6 mi. S of Adin; along California Hwy. 139 right-of-way. 1372 Comment
  UC82153  Lupinus polyphyllus var. burkei T. S. Brandegee 1892-7-28 Lassen Janesville Comment
  HSC69591  Lupinus pusillus subsp. intermontanus Gary Schoolcraft 1980-5-30 246 Lassen On S side of road into Diaz Ranch at N end of Mud Flat 1360 Comment
  SEINET10486219  Lupinus saxosus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2575 Lassen 6 mi s of adin; along state hwy. 139 Right-of-way. In basalt-clay, grassy road Bank. Artemisia-juniper association. 1372 Comment
  JEPS121263  Lythrum hyssopifolia Lowell Ahart, John Dittes 2013-7-23 18896 Lassen Along S margin of the 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
  JEPS127348  Lythrum hyssopifolia Lowell Ahart, John Dittes 2016-7-13 21125 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CDA18272  Machaeranthera canescens G. D. Barbe 1974-8-2 1937 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SFV7754  Madia citrigracilis T. Gordon, K. Kimbrough 1975-8-15 1214 Lassen 16 miles south of Adin. 1402 Comment
  CAS-BOT-BC343699  Madia elegans Clare B. Hardham 1969-8-28 17425 Lassen Slope west of Janesville Comment
  CHSC30624  Madia elegans E. C. Taylor 1975-7-19 73 Lassen Ca. 30 yds nw of ELFS Vesta Holt Hall. 1584 Comment
  JEPS40375  Madia elegans W. L. Jepson 1939-8-11 19373 Lassen Milford 1280 Comment
  SBBG95823  Madia elegans G. K. Helmkamp 1990-10-4 M- 9 Lassen S of Susanville, N of Milford Pass, Plumas Nat Forest 1463 Comment
  SD132249  Madia elegans G. Helmkamp 1990-9-23 A 6 Lassen 3.0 miles east of Susanville, along State Road 36. 1340 Comment
  SEINET11601338 Image available Madia elegans J. A. Young 1983-8-4 s.n. Lassen Janesville Comment
  UC1136966  Madia elegans L. R. Short 1936-6-26 S- 457 Lassen Burgess Spr. Exp. Range Lassen Forest 1837 Comment
  CAS-BOT-BC343691  Madia elegans Alice Eastwood 1912-8-22 1817 Lassen Morgans Springs, Lassen Butte Region Comment
  RSA719892  Madia elegans subsp. elegans Michael A. Vincent, K. Levings 2006-7-29 12912 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  JEPS88219  Madia exigua Vernon H. Oswald and Lowell Ahart 1996-6-17 7806 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  JEPS89656  Madia exigua Dean Wm. Taylor with Robert A. Price 1988-6-4 9769 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek, Fall R. Valley); Pit R. Watershed, Fall R. Valley 1036 Comment
  JEPS89663  Madia glomerata Dean W. Taylor 1989-8-4 10423 Lassen Hwy. 299 at Muck Valley Rd. ca. 2 mi. w. Nubieber (Modoc Plateau); Modoc Plateau 1539 Comment
  RSA338583  Madia gracilis Noel Holmgren, Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale. 1677 Comment
  SEINET11601445 Image available Madia gracilis J. A. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, Ca. 1372 Comment
  CAS-BOT-BC512878  Maianthemum stellatum Louella Bass 1973-6-17 120 Lassen Elysian Valley 1325 Comment
  CHSC12436  Malacothrix Robert W. Severin 1969-6-25 19 Lassen Murrer's Upper Meadow, 2 mi es e of E.L.B.S. Near west side of meadow. 1584 Comment
  UC92217  Malacothrix floccifera unknown 1892-6-26 Lassen Milford Comment
  CHSC80607  Malacothrix glabrata V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10038 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  CHSC64758  Malacothrix torreyi Vernon H. Oswald 1995-5-24 6786 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. On the s side of the road. 1219 Comment
  JEPS124803 Image available Malva neglecta Lynne C. Carter 1967-7-11 82 Lassen 1.1 mile south of Millford on HWY 395, west of Honey Lake. Comment
  UC18838  Malvella leprosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3330 Lassen near the hot springs Honey Lake Valley 1219 Comment
  UCD54571  Malvella leprosa Ellen Dean; Dawn Cunningham 2005-10-25 2754 Lassen E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond. 1248 Comment
  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
  CHSC58832  Marsilea oligospora Vernon H. Oswald; Lowell Ahart 1992-7-16 5126 Lassen Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1.0 mi E of Willow Spring Rd, (Forest Rd. 31N56), between Old Station and Susanville. 1745 Comment
  CHSC13512  Marsilea vestita K. R. Stern 1974-6-26 Lassen On s side of Hwy 44, 5.6 mi n of intersection with County Rd. A-21 to Westwood. Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  POM260428  Marsilea vestita C. L. Hitchcock 1940-5-26 6649 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC99286  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-20 14911 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
  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
  UCD54546  Matricaria occidentalis Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2730 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  UC584328  Melica bulbosa G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2283 Lassen e slope and summit Diamond Mt. 2194 Comment
  CHSC30586  Melilotus indicus P. V. Caldwell 1972-6-30 270 Lassen Jct. of Horse Lake Rd. and Hwy. 395. 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
  SFV12339  Mentzelia albicaulis J. Major 1966-6-24 s. n. Lassen Warner Mountains Above Blue Lake, about 18 miles (airline) southeast of Likely. 1905 Comment
  HSC42457  Mentzelia albicaulis Barbara Kelly 1977-8-9 569 Lassen On Rd. from Adin to Madeline, 10.1 mi. E of Madline. Comment
  JEPS124817 Image available Mentzelia albicaulis N. L. Rechen 1964-7-1 73 Lassen 1 mile north of Susanville. H. 139 Comment
  JEPS124818 Image available Mentzelia albicaulis M. L. Wheelis 1964-6-30 128 Lassen 11.5 miles north fo Susanville on highway 139. Comment
  CHSC91323  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
  RSA715551  Mentzelia congesta L. Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  SEINET8707736  Mentzelia congesta B. L. Wilson, D. Lytjen, N. Otting. 2005-7-27 11547 Lassen Pine Dunes, an exclosure, S of Buckhorn Road and ca 1 mile NW of Buckhorn Reservoir. 1716 Comment
  CHSC29933  Mentzelia dispersa Robin L. Ondricek 1978-6-22 67 Lassen In rocky soil among Jeffrey Pines at the n end of Mahogany Lake. 2057 Comment
  CHSC4782  Mentzelia dispersa R. Carter 1967-6-27 566 Lassen 1.75 mi W of Eagle Lake Biology Station. Growing in dry rocky soil ca. 10 yds. off S side of Rd. 1584 Comment
  CHSC5300  Mentzelia dispersa P. Balch 1955-7-22 Lassen Paul Bunyan Rd., 3 1/2 mi from Susanville toward Eagle Lake. 1889 Comment
  CHSC92643  Mentzelia dispersa L. P. Janeway 2005-7-4 8470 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  RSA32753  Mentzelia dispersa A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. 1524 Comment
  UCD117218  Mentzelia dispersa Verne Grant; Irving Schneider 1947-8-1 8228 Lassen irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
Read comments
Dec 5 2012
  SD130462  Mentzelia dispersa John Thomas Howell, Gordon H. True 1973-8-1 50204 Lassen The Sierra Nevada. Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville. 2164 Comment
  CAS-BOT-BC428456  Micranthes aprica 1927-5-20 1 Lassen Lassen National Forest. Norval Flat. 1747 Comment
  SBBG2836  Micranthes integrifolia H. and M. Dearing 1938-6-30 2232 Lassen Box 20 mi N of Susanville [Hwy 44] 1066 Comment
  CAS-BOT-BC429185  Micranthes oregana Parkison 1916-7-21 27 Lassen Lassen National Forest. Harvey R.S. 1676 Comment
  SD8379  Micranthes tolmiei Mrs. R. M. Austin Aug 1882 Lassen Lassen Co Calif Comment
  CAS-BOT-BC349301  Microseris nutans James Jokerst 1983-7-25 1887 Lassen Near Madeline Plains 1614 Comment
  OBI76978  Microseris nutans Anthony Baniaga 2011-8-4 486 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill along 30N21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  CHSC71094  Microsteris gracilis Vernon H. Oswald; Lowell Ahart 1998-5-22 9100 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  UCD55154  Microsteris gracilis Ellen Dean 2006-5-15 3042 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  OBI48095  Microsteris gracilis Rhonda Riggins 1989-4-27 1637 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  RSA122924  Microsteris gracilis subsp. humilis L. R. Short 1936-5-7 S- 343 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  SEINET13764907  Mimetanthe pilosa M. J. Williams 1974-7-26 74 -L-29 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UC1609131  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-28 5609 Lassen ne Poison Lake (n of Hwy. 44 on Rd. 33N06, nne of Burgess Meadow, sse flank of mtn.); Harvey Mtn. 1798 Comment
  UC1063531  Mimulus breweri A. Simontacchi 1940-5-21 762 Lassen 4.1 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC726695  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi e Westwood 1524 Comment
  JEPS10455  Mimulus guttatus W. L. Jepson 1939-8-11 19374 Lassen Milford 1280 Comment
  UC26977  Mimulus guttatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3400 Lassen Honey Lake Valley Comment
  JEPS97419  Mimulus latidens Vernon H. Oswald and L. Ahart 1995-6-19 6887 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395 1350 Comment
  JEPS94552  Mimulus lewisii Vernon Oswald and Lowell Ahart 1997-6-24 8616 Lassen 0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43 1889 Comment
  UC726697  Mimulus microphyllus A. A. Heller 1938-6-22 15183 Lassen 1 mi e Westwood 1524 Comment
  UC773851  Mimulus microphyllus L. R. Short and J. Warren 1936-6-10 S- 417 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1856 Comment
  JEPS10776  Mimulus moniliformis Brown and Wieslander 1922-7-30 17 Lassen near Martin Springs Comment
  CHSC13734  Mimulus moschatus Sue Villard 1973-7-12 57 Lassen Shoreline of Coleman Lake, ca. 5 mi s of Eagle Lake Foeld Station, ca. 13 mi nw of Susanville. Comment
  SEINET10756203 Image available Mimulus nanus var. jepsonii Willis L. Jepson 1910-6-10 Jepson 4112 Lassen Twin Lakes (Grassy Lake). 2225 Comment
  RSA437621  Mimulus nanus var. mephiticus Barbara J. Ertter, Gary Schoolcraft 1987-6-16 7197 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  RSA715546  Mimulus nanus var. mephiticus L. Ahart, John Dittes 2005-6-1 11869 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC124340  Mimulus nanus var. mephiticus Gustav Eisen 1891-1 Lassen Honey Lake Comment
  UC1561980  Mimulus nanus var. mephiticus Barbara Ertter with Gary Schoolcraft 1987-6-16 7197 Lassen saddle on e side Hot Springs Peak (on ne side of lake); Skeedaddle Mountains, Honey Lake 2194 Comment
  UC27047  Mimulus nanus var. mephiticus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC81185  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS15594  Mimulus nanus var. nanus Milo S. Baker 1893-7-5 Lassen Dixey Valley Comment
  HSC95323  Mimulus primuloides var. primuloides Gordon Leppig, Tony LaBanca 1997-6-28 516 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC886329  Mimulus pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen lava beds ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  UC1037311  Mimulus torreyi Leo Whitney 1934-7-27 1808 Lassen 5 mi w lower end of Eagle Lake (near Antelope Mt.); Lassen National Forest 1737 Comment
  UC477503  Monardella glauca Geo. A. Fisher 1928-6-12 27 Lassen Lassen Forest 1615 Comment
  CHSC27650  Monardella odoratissima Cindy Prouty 1978-7-10 2 Lassen Colman L., several mi SE of Eagle L. 1962 Comment
  HSC22951  Monardella odoratissima John Pratt 1970-6-21 30 Lassen 1738 Comment
  CHSC111253  Monardella odoratissima subsp. glauca L. P. Janeway; B. Castro 2012-7-2 10933 Lassen Modoc Plateau. Along Skedaddle Ranch Road 6.4 road km north of Skedaddle Creek at an unnamed tributary of Bull Creek. 1533 Comment
  RSA530489  Monardella odoratissima subsp. odoratissima George K. Helmkamp 1990-10-4 R- 22 Lassen Plumas Nat. For., S of Susanville, N of Milford Pass. 1463 Comment
  CHSC45231  Monardella odoratissima subsp. pallida P. V. Caldwell 1972-7-8 269 Lassen Eagle Lake. Rd 32N02 about 2 mi from Summit Camp. Comment
  RSA18163  Monardella odoratissima subsp. pallida Carl B. Wolf 1929-9-1 3782 Lassen Mt. Lassen Nat l Park, between Grassy Lake and Snag Lake. Comment
  UC1537599  Monardella odoratissima subsp. pallida Gordon H. True Jr. 1938-7-14 961 Lassen Just north of summit Milford Grade 1767 Comment
  CAS-BOT-BC444693  Montia chamissoi Lassen 1927 G. S. Crew 1927-6-25 25 Lassen Lassen National Forest. Norval Flat 2051 Comment
  HSC75892  Montia chamissoi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19155 Lassen 3 mi. N of Westwood Comment
  HSC95205  Montia chamissoi Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 542 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC445065  Montia linearis Louella Bass 1973-5-29 55 Lassen Elysian Valley. 1325 Comment
  CHSC60845  Montia linearis Vernon H. Oswald; Lowell Ahart 1993-6-28 5611 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
  UC773867  Montia linearis L. R. Short, Wm. Gansberg 1936-6-8 S 392 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1743 Comment
  SEINET5334396  Montia linearis J. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, Ca. 1372 Comment
  CAS-BOT-BC262635  Muhlenbergia asperifolia John Thomas Howell 1973-7-10 49801 Lassen Hwy. 395, 4 miles north of Doyle Comment
  JEPS70578  Muhlenbergia asperifolia W. L. Jepson 1918-8-2 7780 Lassen seepage swale below spring Beckwith Pass 1463 Comment
  JEPS28280  Muhlenbergia filiformis J. T. Howell 1957-7-28 940 Lassen marsh near west end of Widow Lake; Lassen Volcanic National Park 2072 Comment
  UCD86722  Muhlenbergia filiformis L. Whitney 1933-8-15 s.n. Lassen Meadow near Sheepshead. 1889 Comment
  RSA256323  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6238 Lassen Vicinity of Silver Lake, 22 miles NW of Susanville along Hwy 44 1768 Comment
  SD109577  Muhlenbergia jonesii John R. Reeder, Charlotte G. Reeder 1972-7-24 5809 Lassen 22 miles NW of Susanville in vicinity of Silver Lake, along State Hwy. 44, Lassen National Forest 1707 Comment
  RSA256322  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1973-6-5 6236 Lassen 35 miles NW of Susanvill, near Pittville sing on Hwy 44 1738 Comment
  RSA268996  Muhlenbergia richardsonis J. R. Reeder 1972-7-24 5806 Lassen Lassen National Park 1921 Comment
  UC1024803  Muhlenbergia richardsonis Leo Whitney 1935-6-23 3290 Lassen meadow Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  CHSC66236  Myosotis micrantha Vernon H. Oswald; Lowell Ahart 1996-6-24 7880 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Along Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  NY492639  Myosurus apetalus K. L. Chambers 1963-5-4 2026 Lassen Highway 395, 10 miles north of junction with Alt. Highway 40 (later renumbered as Highway 70). Comment
  UC1924589  Myosurus apetalus Debra Valov 2006-5-29 2006019 Lassen Bieber California, Lassen Co., Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC1951072  Myosurus apetalus Debra Valov 2009-4-26 2009019 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 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
  CHSC61171  Myosurus apetalus var. borealis Vernon H. Oswald; Lowell Ahart 1993-5-12 5392 Lassen N side of Hwy. 44 between Old Station and Poison Lake, 0.6 mi E of the Shasta County line. 1645 Comment
  CAS-BOT-BC83320  Myosurus minimus James Jokerst 1983-7-25 1890 Lassen Near Madeline Plains. 1614 Comment
  JEPS118444  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17526 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley 1268 Comment
  CAS-BOT-BC83321  Myosurus minimus Clarence R. Quick 1962-6-17 62 25 C Lassen Swains Hole, a man-made pond south of Blacks Mountain Experimental Station. 1554 Comment
  CHSC77218  Myriophyllum sibiricum G. Schoolcraft 1996-7-10 2532 Lassen Willow Creek- northeast of Susanville. 1432 Comment
  CDA36310  Myriophyllum sibiricum J. R. Keck Jr., D. L. Haws 1978-9-6 PDR# 330036 Lassen Eagle Lake; at the public boat ramp at Spaulding Resort. 0 Comment
  RSA634201  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139. Comment
  CHSC71088  Nama aretioides var. californica Vernon H. Oswald; Lowell Ahart 1998-5-22 9105 Lassen Road to ORV parking area in Fort Sage Mtns., 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  CHSC43311  Nama densa Lowell Ahart 1974-7-9 543 Lassen Along the edge of the road, near the wouth-west edge of Eagle Lake. 1584 Comment
  JEPS1373  Nama densa John G. Lemmon 1893-5-28 Lassen Susanville 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
  UC1037269  Navarretia divaricata Leo Whitney 1934-7-10 1773 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Harvey Valley 1737 Comment
  UC1058207  Navarretia intertexta C. McMillan 1949-6-15 1540 Lassen 5 mi w Bieber Comment
  UC1192110  Navarretia intertexta Herbert L. Mason 1955-7-31 14644 Lassen near Westwood Junction Comment
  CHSC113069  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2013-7-22 18869 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC112979  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2013-7-22 18853 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD48605  Navarretia intertexta subsp. propinqua John M. Tucker 1950-7-25 1977 Lassen On road from Pittville, 33 miles northwest of Susanville, Lassen County, California. Comment
  CHSC27670  Navarretia leptalea subsp. bicolor Robert A. Schlising 1978-7-9 3312 Lassen South of Eagle Lake. Area between Papoose Meadows and Eagle Lake Road. Comment
  SJSU11520  Navarretia leucocephala subsp. bakeri J. W. Tilden 1958-6-27 1295 Lassen Madeline, Madeline Plains 1615 Comment
  UC909068  Navarretia leucocephala subsp. bakeri G. L. Stebbins Jr. 1949-8-6 4003 b Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  CHSC112444  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18778 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
  CHSC23853  Navarretia leucocephala subsp. minima Glenda Foster 1975-7-12 100 Lassen At margins of Poison Lake, along road to Pitville, ca. 0.2 mi from Hwy. 44, past railroad tracks. Comment
  JEPS88516  Navarretia leucocephala subsp. minima Vernon H. Oswald and Lowell Ahart 1996-6-24 7847 Lassen Papoose Meadows located ca. 0.5 mi. e. of Eagle lake Rd. (A1) and 2.5 mi. s. of Eagle Lake (on w. side of the meadow just s. of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  POM312617  Navarretia leucocephala subsp. minima Malcolm A. Nobs, S. Galen Smith 1949-5-29 756 Lassen Nubieber on Great Northern Railway, Highway 299 Comment
  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
  UC1112253  Navarretia leucocephala subsp. minima R. C. Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (Highway 395); Madeline Plains 1615 Comment
  UC1137761  Navarretia leucocephala subsp. minima August L. Hormay 1934-5-15 Lassen 2 mi n Eldridge's; Lassen Forest 1524 Comment
  UCD48537  Navarretia leucocephala subsp. minima Gerald Dickinson 1963-7-3 75 Lassen Along U.S. Highway 299, 1 mile west of Bieber. 1249 Comment
  UC908650  Navarretia leucocephala subsp. minima Lincoln Constance 1946-7-3 Lassen Madeline Station Comment
  UC1137583  Navarretia linearifolia subsp. linearifolia A. Simontacchi 1940-6-4 803 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1143039  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  UC773906  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  CHSC89726  Navarretia sinistra subsp. sinistra L. P. Janeway 2004-6-26 8148 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  UCSB30253  Nemacladus interior Hardham, Clare 1961-6-16 Lassen Gold Run Creek south of Susanville 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
  UC107265  Nemophila parviflora var. austiniae T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC112404  Nemophila pedunculata Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18724 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET5521095  Nemophila pedunculata N. H. Holmgren, P. K. Holmgren 1978-6-11 8911 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  UC20413  Neoholmgrenia andina Mrs. R. M. Austin and Bruce June 1898 2364 Lassen Shumway Comment
  UC1191769  Nicotiana acuminata var. multiflora Verne Grant and Irving Schneider 1947-9-7 8399 Lassen 0.5 mi w Litchfield (Susan River by Highway 395 at Bridge 7-34); Susan River Comment
  JEPS12268  Nicotiana attenuata W. L. Jepson 1939-8-12 19410 Lassen sw of Dixie Valley Comment
  CHSC71124  Nothocalais troximoides Vernon H. Oswald; Lowell Ahart 1998-5-22 9097 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  SEINET10729606  Nuphar lutea subsp. polysepala Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 845 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. T31N R7E S26 SW 1/4. 1981 Comment
  CAS-BOT-BC171462  Oenothera boothii Louella Bass 1978-5-18 s.n. Lassen Amedee Comment
  HSC22878  Oenothera deltoides John Pratt 1970-6-14 16 Lassen East of Janesville Comment
  RSA146085  Oenothera deltoides subsp. piperi G. I. Stage, R. W. Thorp 1959-6-19 59 -113 Lassen 7.2 miles southeast of Milford. Comment
  UC566272  Oenothera deltoides subsp. piperi E. Sawyer 1935-6-27 231 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  SEINET10491876  Oenothera deltoides subsp. piperi Paul Gallian, David B. Dunn 1971-6-2 Gallian 491 Lassen 5 mi s of milford near honey lake on us hwy 395; along roadside in grass artemesia tridentata assoc; quercus jeffery pine on mtn range to west at approximately the same altitude. 1250 Comment
  UC174846  Oenothera elata subsp. hirsutissima T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  SEINET8884758  Olsynium douglasii R. Mills 1956-4-29 13 Lassen 7 miles south of Susanville, , along a creek bed on south side of hill. 1279 Comment
  CHSC29921  Orobanche corymbosa Robin L. Ondricek 1978-6-27 76 Lassen At Brockman Flat Lava Beds. 1584 Comment
  SEINET230278  Orobanche corymbosa Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9509 Lassen Observation Peak south side of mountain 18 km (11mi) airline distance east of Ravendale. 1890 Comment
  CAS-BOT-BC499906  Orobanche fasciculata Clare B. Hardham no date on label; det'd 1980. s.n. Lassen Sierra Nevada: Gold Rush Creek, S of Susanville Comment
  CAS-BOT-BC502937  Orobanche uniflora G. Schoolcraft 1999-4-21 2813 Lassen On E. Bald Mtn about 10 mi SE of Susanville 1341 Comment
  CHSC59821  Orthocarpus cuspidatus subsp. cryptanthus Mary Meyer 1980-7-8 Lassen 1706 Comment
  UC1484779  Orthocarpus cuspidatus subsp. cryptanthus Noel H. Holmgren and Patricia K. Holmgren 1978-6-12 8933 Lassen 17 km (10.5 mi) airline distance ese Ravendale (s of Observation Peak, upper Smoke Creek); Upper Smoke Creek, just s of Observation Peak 1770 Comment
  UC773854  Orthocarpus cuspidatus subsp. cryptanthus L. R. Short and J. Warren 1936-6-23 S- 453 Lassen Burgess Spr. Exp. Range; Lassen Forest, Burgess Spr. Exp. Range 1743 Comment
  RSA337231  Orthocarpus hispidus Noel Holmgren, Patricia K. Holmgren 1980-7-3 9483 Lassen US Highway 395, 7.4 km (4.6 mi) S of Ravendale. 1620 Comment
  RSA712893  Orthocarpus lacerus L. P. Janeway 2005-7-3 8454 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CHSC63381  Packera cana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6312 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  HSC63731  Packera cana Teresa Prendusi 1980-7-14 1118 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  UCD134780  Packera eurycephala Michael A. Vincent 1999-6-9 8581 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
  OBI49191  Packera eurycephala var. eurycephala Lewis S. Rose 1940-6-11 40505 Lassen 8 mi W of Nubieber 1219 Comment
  CHSC5217  Packera multilobata A. Santos 1946-6-17 Lassen Eagle Lake. Mr. Fredonyer Rd. 2072 Comment
  JEPS95971  Packera multilobata Vernon H. Oswald and L. Ahart 1999-6-9 9734 Lassen Hwy. 395 northeast of Susanville and north of Smoke Creek Ranch Rd. at Mud Flat: T30N R15E Sect. 3, 4425 ft elevation, dry playa surrounded by sagebrush scrub 1348 Comment
  OBI76965  Packera streptanthifolia Anthony Baniaga 2011-8-4 488 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill, ca. 40 ft N of 30N21. Swain Mtn Quad. T30N R8E sec 5 SW of SW 1918 Comment
  CAS-BOT-BC10388  Paeonia brownii Margaret Williams; Steven Williams 1974-7-26 74- 2 -14 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  CHSC21231  Paeonia brownii Robert A. Schlising 1974-7-19 3151 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station; basaltic rocks from Black Mt. lava flow by Bly Tunnel. Comment
  UC1126132  Paeonia brownii A. Simontacchi 1940-6-8 834 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quadrangle Comment
  UC1126133  Paeonia brownii A. Simontacchi 1940-5-13 698 Lassen 4.6 mi sw B.M. 7310; Lassen National Forest, Halls Flat Quadrangle, Blacks Mtn. Comment
  SEINET10537860  Paeonia brownii Paul Gallian, David B. Dunn 1971-6-2 Gallian 503 Lassen 6 mi n of hallelujah hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC253719  Panicum capillare Arnold Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs, N end of Honey Lake Valley, 4 air miles SE of Wndel 1220 Comment
  CHSC93670  Panicum capillare Lowell Ahart; John Dittes 2005-6-2 11973 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CAS-BOT-BC253786  Panicum hillmanii John Thomas Howell 1973-7-10 49808 Lassen Doyle Comment
  CAS-BOT-BC259612  Pascopyrum smithii James Jokerst 1983-7-25 1898 Lassen Near Madeline Plains 1614 Comment
  CHSC77265  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE. of Shaffer Mtn. 1356 Comment
  RSA647577  Pascopyrum smithii Marion P. Harthill 1972-6-16 780 Lassen Doyle 1372 Comment
  JEPS94120  Pectocarya penicillata Vernon H. Oswald and Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  SEINET10456342  Pectocarya penicillata David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17750 Lassen 3 mi. S of Hallelujah Jct, on US Hwy 395, jct of US 395 & CA 70. Comment
  HSC31343  Pectocarya setosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19279 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  JEPS10720  Pedicularis attollens Brown and Wieslander 1922-7-23 29 Lassen Martin Springs; Eagle Lake Comment
  CHSC68879  Pedicularis groenlandica Vernon Oswald; Lowell Ahart 1997-6-24 8652 Lassen South of Susanville just south of small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 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
  JEPS95203  Pellaea brachyptera Gary Schoolcraft 1996-3-31 2518 Lassen 4 miles SW of Susanville. 1493 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
  RSA715656  Penstemon deustus subsp. heterander L. Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  POM252931  Penstemon deustus subsp. sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass on Hwy 36. 1646 Comment
  CHSC4272  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-24 2426 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC65129  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1995-7-24 7135 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  JEPS29103  Penstemon deustus var. pedicellatus Lauramay T. Dempster 1961-6-17 1679 Lassen Highway 395 just w Tule Mt.; just w of Tule Mt. 1645 Comment
  SEINET5326727 Image available Penstemon deustus var. pedicellatus P. A. Lehenbauer 1937-5-30 s.n. Lassen 60 miles north of Reno, on Feather River, near Feather River Inn. Comment
  SEINET5326740 Image available Penstemon deustus var. pedicellatus G. Schoolcraft 1993-6-29 2309 Lassen Ash Valley RNA between Adin & Madeline, CA 1585 Comment
  CHSC29258  Penstemon gracilentus J. D. Prouty 1978-6-28 11 Lassen E of Eagle L., at W shore of Lower Dy L. Comment
  JEPS11274  Penstemon gracilentus Brown and Wieslander 1922-7-23 43 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  JEPS94557  Penstemon gracilentus Vernon Oswald and Lowell Ahart 1997-6-24 8598 Lassen s of Susanville (on n side of Dianmond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Dianmond Mountain, Forest Road 29N43 1685 Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  HSC22978  Penstemon gracilentus John Pratt 1970-6-21 31 Lassen 1738 Comment
  UC1874751  Penstemon gracilentus Karl Vincent, Charlotte Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn.; Alng CA A1 at Eagle Lake Summit, ca. 7.6 mi N of jct. CA 36, ca 7 air mi NW of Susanville. 1932 Comment
  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
  UC584356  Penstemon janishiae G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2282 Lassen summit and e slope Diamond Mt. 2194 Comment
  POM43270  Penstemon miser Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  NY627263  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen Pinus Ponderosa forest west of Westwood. Comment
  POM195120  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood. 1494 Comment
  SBBG28836  Penstemon neotericus A. A. Heller 1939-7-28 15294 Lassen W of Westwood 1524 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
  SBBG28997  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen E of Westwood 1493 Comment
  CAS-BOT-BC239220  Penstemon newberryi var. berryi Hans Leschke 1957-7-12 s.n. Lassen Lassen Volcanic National Park, above Cold Boiling Lake 2377 Comment
  CHSC36485  Penstemon roezlii Margaret E. Halloran 1982-6-4 3 Lassen .5 mi e Murrers Upper Meadow on road to meadow. Comment
  CHSC68883  Penstemon roezlii Vernon Oswald; Lowell Ahart 1997-6-24 8623 .1 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  NY641730  Penstemon roezlii R. G. Olmstead 1984-6-27 582 Lassen 10.3 miles east from U.S. 395 pm Rye Patch Canyon road. 1603.3 Comment
  NY650102  Penstemon roezlii J. T. Howell 1973-8-1 50205 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164.1 Comment
  POM268103  Penstemon roezlii H. C. Cantelow 1941-5-22 s.n. Lassen North of Litchfield, US Hwy 395. 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
  UC585179  Penstemon roezlii E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1764 Lassen summit of ridge e Red Rock; e of Red Rock 1828 Comment
  RSA299199  Penstemon roezlii J. T. Howell, Gordon H. True, Wayne Dakan 1974-7-30 50689 Lassen South and southeast of Diamond Mtn. 2226 Comment
  UCD124154  Penstemon roezlii Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Balls Canyon, south of Secret Valley. 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-BC239496  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen .5 mi. north of turnoff to Heir [Herlong], Hwy 395, between Milford and Doyle 1280 Comment
  CAS-BOT-BC239501  Penstemon rydbergii var. oreocharis Robert W. Gardner 1937-6-20 G - 19 Lassen Lassen National Forest, Burgess Spring 1699 Comment
  CAS-BOT-BC239511  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219 Comment
  CHSC13645  Penstemon rydbergii var. oreocharis M. S. Taylor 1974-6-25 287 Lassen Abundant in meadow ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC30588  Penstemon rydbergii var. oreocharis Marc Held 1972-6-29 23 Lassen South end of Dean's Meadow. Comment
  CHSC5915  Penstemon rydbergii var. oreocharis R. Gein 1946-6-24 Lassen McCoy Flat, west of Eagle Lake. 1645 Comment
  UC1063480  Penstemon rydbergii var. oreocharis A. Simontacchi 1940-6-3 792 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC506978  Penstemon rydbergii var. oreocharis George A. Fischer and Irwin H. Johnson 1933-7-12 F 228 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  NY660816  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen Southwest slopes of Cold Springs Mountain 1890 Comment
  POM44889  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC1036208  Penstemon speciosus George W. Gillett July 1953 273 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass (Highway 36) 1752 Comment
  UC1142999  Penstemon speciosus August L. Hormay 1934-6-30 Lassen Harvey Valley Lassen National Forest 1615 Comment
  NY661061  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 950 Lassen Susanville 1280.2 Comment
  CAS-BOT-BC239661  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36, west of Susanville 1371 Comment
  CAS-BOT-BC243405  Penstemon sudans H. D. Ripley; R. C. Barneby 1943-6-14 5739 Lassen W. of Susanville 1371 Comment
  CAS-BOT-BC243412  Penstemon sudans David D. Keck; J. Clausen 1935-6-25 3756 Lassen Susanville Comment
  JEPS84973  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains, Honey Lake 1828 Comment
  NY661798  Penstemon sudans F. W. Pennell 1940-6-9 25768 Lassen Route 36. Hill, west of Susanville 1371.6 Comment
  NY661806  Penstemon sudans J. T. Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432.6 Comment
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Apr 21 2013
  OBI75898  Penstemon venustus Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 479 Lassen Lassen Natl Forest. Along Hwy 36. Fredonyer Pass quad. T29N R10E sec 2 sW of NW 1701 Comment
  SEINET12335380  Penstemon venustus K. A. Vincent 1987-1 4500 Lassen Sierra Nevada, SE side of Fredonyer Butte, N side of CA 36 ca 11.5 mi WSW of Susanville 1585 Comment
  CHSC29932  Perideridia bolanderi Robin Ondricek; Wesley Dempsey 1978-6-7 43 Lassen Lower Dry Lake. 1706 Comment
  CHSC5921  Perideridia bolanderi J. E. Wolf 1946-6-23 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  CHSC7747  Perideridia bolanderi Beverly J. Wise 1969-5-18 114 Lassen 15.9 mi. East of Susanville on Las. Co. Rd. 216 of Las. Co. Rd. 215. 1554 Comment
  CHSC91292  Perideridia bolanderi Lowell Ahart; John Dittes 2005-6-1 11916 Lassen Along a small wash, on the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. 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
  RSA0092314  Perideridia bolanderi subsp. bolanderi Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31422 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  SEINET5845147  Peritoma platycarpa J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  UCD20364  Peritoma platycarpa Joe DiTomaso 2002-6-4 s.n. Lassen About 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. Comment
  CHSC41840  Persicaria P. V. Caldwell 1972-7-12 281 Lassen Eagle Lake. Growing along entire length on Papoose Creek on the muddy banks. Comment
  CHSC6230  Persicaria amphibia J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  CAS-BOT-BC413523  Persicaria amphibia John Thomas Howell 1975-7-23 51405 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  JEPS27119  Phacelia adenophora Lauramay T. Dempster 1961-6-17 1678 Lassen about 8 mi n Karlo road junction with Hwy. 395 1584 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
  POM266184  Phacelia adenophora J. T. Howell 1934-6-10 11898 Lassen Horse Lake Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  UC1088434  Phacelia adenophora Peter H. Raven and Otto T. Solbrig 1958-6-17 13281 Lassen 5.7 mi s Ravendale Comment
  UC1401312  Phacelia adenophora D. B. Dunn 1956-7-3 11917 Lassen on hwy 395 31 mi ne Johnstonville (n side of flats) Comment
  UCD72517  Phacelia adenophora Joe DiTomaso 2008-5-15 s. n. Lassen Modoc Plateau, just inside California (from Nevada) on Smoke Creek Road near Ravendale. Comment
  NY1052542  Phacelia bicolor W. W. Eggleston 1911-5-29 6742 Lassen Vicinity of Doyle Station 1290 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
  JEPS94828  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
  UC1523735  Phacelia hastata Gary Schoolcraft 1981-6-15 462 Lassen Ash Valley 1584 Comment
  UC773946  Phacelia heterophylla subsp. virgata L. R. Short 1936-6-30 S- 463 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1816 Comment
  CHSC26178  Phacelia humilis J. P. Kroessig 1977-5-25 35 Lassen At Eagle Lake Biological Station, ca. 37 km nnw of susanville. 1570 Comment
  CHSC4910  Phacelia humilis A. E. Anderson 1967-6-23 5 Lassen Around Eagle Lake Biological Station. 1554 Comment
  HSC30186  Phacelia humilis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19265 Lassen Harvey Valley near Cone Springs Comment
  JEPS2126  Phacelia humilis C. S. Robinson 1927-6-25 Lassen near Westwood Jct. (sw Lassen Co.); Lassen N. F., Norval Flat 1747 Comment
  JEPS3192  Phacelia humilis Hilda W. Grinnell 1934-6-1 Lassen 8 mi sw Susanville (top of divide) 1950 Comment
  NY1057842  Phacelia humilis P. A. Munz 1947-5-20 11885 Lassen Laufman Forestry Public Camp above Milford 1524 Comment
  RSA201834  Phacelia humilis var. humilis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake, Warner Mountains, Modoc National Forest, northeastern part of the county (ca. 18 miles airline southeast of Likely). 1905 Comment
  CAS-BOT-BC145033  Phacelia inundata John Thomas Howell 1934-7-8 12510 Lassen Spalding's, Eagle Lake Comment
  JEPS79142  Phacelia inundata L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  CHSC71090  Phacelia linearis Vernon H. Oswald; Lowell Ahart 1998-5-22 9106 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  CHSC726  Phacelia linearis F. Hughes 1935-6-2 Lassen Near Susanville. 1524 Comment
  CHSC80208  Phacelia linearis Jeanne Boze 1981-6-13 117 Lassen On northeast slope of Gallatin Peak. 1981 Comment
  GMDRC7731  Phacelia linearis J. M. Andre, G. Clifton 1993-6-1 33407 Lassen Modoc Plateau: along US Hwy 395, approx. 30 mi. NE of Susanville, north end of Secret Valley, SE end of Snowstorm Mtn, about 15 mi. SSE of Ravendale 1375 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
  OBI82828  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  SEINET5497674  Phacelia tetramera A. Tiehm 1980-1 5750 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north-northwest of Wendel 1231 Comment
  JEPS79143  Phacelia thermalis L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  NY1057982  Phacelia thermalis H. D. D. Ripley 1943-6-15 5761 Lassen Smoke Creek, northeast of Viewland 1341 Comment
  NY1057983  Phacelia thermalis H. D. D. Ripley 1943-6-15 5761 Lassen Along Smoke Creek northeast of Viewland 1311 Comment
  UC1567390  Phacelia thermalis G. Schoolcraft 1989-5-3 1868 Lassen s Karlo; North end of Secret Valley 1341 Comment
  RSA324193  Phacelia thermalis Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8595 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  UC1100415  Phleum pratense Herbert L. Mason and Verne Grant 1947-7-9 13303 Lassen 5 mi e Bieber (irrigation ditch) Comment
  POM64961  Phlox diffusa subsp. diffusa Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  JEPS114635  Phlox gracilis Lowell Ahart, John Dittes 2008-6-20 14929 Lassen Around 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
  JEPS71121  Phlox gracilis Dr. R. H. Loughridge 1912-1 Lassen Madeline Plains 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
  UC1567441  Phlox longifolia G. Schoolcraft 1989-5-16 1878 Lassen w of Rice Canyon Rd. (at base of Antelope Mtn.); Antelope Mtn. 1280 Comment
  RSA647573  Phlox longifolia Marion P. Harthill 1971-6-21 226 Lassen Ravendale Comment
  RSA469948  Phlox longifolia subsp. brevifolia Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC579783  Phlox longifolia subsp. compacta David D. Keck and J. Clausen 1935-6-24 3744 Lassen 2 mi s Ravendale Comment
  NY963723  Phlox speciosa LeDoux 1973-5-25 867 Lassen Collected 3 miles north of Milford, on Highway 395 at Honey Lake campgrounds Comment
  CHSC108023  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2011-6-20 17506 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC6210  Phlox speciosa subsp. occidentalis R. Gein 1946-6-17 Lassen Summit of Mt. Fredonyer. 2421 Comment
  HSC17069  Phlox stansburyi Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA38466  Phlox stansburyi P. A. Munz 1947-5-19 11884 Lassen Madeline 1677 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
  UC117651  Phoenicaulis cheiranthoides T. S. Brandegee 1892-7-30 Lassen Susanville Comment
  UC2013398  Phoradendron bolleanum Debra Valov 2012-6-19 1115 Lassen Bieber; of County Road A2 c. 2.5 mi east of Highway 299. Comment
  CAS-BOT-BC250984  Phragmites australis G. Schoolcraft 1996-9-11 2581 Lassen Lower end of Willow Creek near Belfast 1341 Comment
  UC1100404  Phragmites australis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1489 Lassen 1 mi s Doyle; Long Creek Comment
  UCD89832  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395. Southeast of Constantia. Comment
  HSC101734  Pinus albicaulis Michael Kauffmann, Jeffrey Kane 2013-7-23 15 Lassen North-facing caldera 2360 Comment
  RSA719897  Pinus jeffreyi Michael A. Vincent, K. Levings 2006-7-29 12907 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CHSC12502  Pinus lambertiana Carol Weld 1969-6-20 13 Lassen Road between Five Corners and Dean's Meadow. 1889 Comment
  CHSC84893  Pinus ponderosa L. P. Janeway; B. Castro 2003-10-5 8005 Lassen High Cascade Range. Cone Lake and trailhead parking area (trail 1.3 km southwest into Caribou Wilderness Area). 2055 Comment
  NY951542  Pinus ponderosa var. ponderosa D. H. Goldman 2004-11-6 2941 Lassen Along the N side of Forest Road 32N08, just N of Pine Creel Valley and about 1.8 miles E of the intersection with Rt. 44. Crater Lake Mountain, Lassen National Forest 1725 Comment
  UCR201593  Plagiobothrys Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  CAS-BOT-BC227994  Plagiobothrys Ella Dales Cantelow 1941-5-22 3474 Lassen 5 miles W of Susanville, State Highway 36 Comment
  CHSC27607  Plagiobothrys cognatus Nancy Heiken 1978-7-5 79 Lassen S of Eagle Lake at E shore of Mahogany Lake; meadow at lake margin. 2060 Comment
  CHSC29914  Plagiobothrys cognatus Robin L. Ondricek 1978-7-5 85 Lassen Grassy area bordering ne edge of Mahogany Lake. 2057 Comment
  UC526162  Plagiobothrys cognatus John Thomas Howell 1934-6-10 11890 Lassen 15 mi. n. Susanville (on rd. to Horse Lake) 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
  JEPS119643  Plagiobothrys cusickii Lowell Ahart, John Dittes 2012-7-9 18284 -A Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS87184  Plagiobothrys cusickii Vernon H. Oswald and Lowell Ahart 1992-7-16 5113 Lassen between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir on s. side of Hwy. 44); Bridge Creek 1691 Comment
  RSA0039528  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC78130  Plagiobothrys cusickii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC224975  Plagiobothrys hispidulus John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50648 Lassen S and SE of Diamond Mountain 2286 Comment
  CHSC60726  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1993-6-14 5510 Lassen Junction of Lassen A1 (Eagle Lake Rd.) with Lassen A21 (32N02), ca. 3 mi (air) W of Eagle Lake. Roadside depression. 1813 Comment
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest Comment
  SD149177  Plagiobothrys hispidus John Thomas Howell, Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2160 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
  UC614658  Plagiobothrys leptocladus L. Constance 1938-6-11 2330 Lassen slightly alkaline overflow of the Susan River at Litchfield; Susan River, Litchfield 1219 Comment
  UC1560401  Plagiobothrys mollis E. Joyal and D. Mehlman 1988-6-27 1286 Lassen Poison Lake 2000 Comment
  CHSC112445  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18771 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
  SEINET10873743  Plagiobothrys tenellus Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 875 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  JEPS124568 Image available Plagiobothrys tener Dixie Funnell 1965-7-13 144 Lassen 4.2 miles west of Dead Horse Summit. HW 89. Comment
  HSC95289  Platanthera dilatata var. leucostachys Gordon Leppig, J. Cromwell 1997-7-26 602 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  CHSC117208  Plectritis macrocera Lowell Ahart; John Dittes 2016-6-7 21005 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC63959  Plectritis macrocera Teresa Prendusi 1980-5-19 Lassen Saddle Rock. 1524 Comment
  SEINET780337  Plectritis macrocera B. J. Cox, D. B. Dunn 1971-6-2 3116 Lassen Six miles N of Halleujah jct. on U.S. Hwy. 395, in Artemesia tridentata. 1402 Comment
  CHSC66852  Pleiacanthus spinosus Vernon H. Oswald 1996-10-3 8297 Lassen Modoc Plateau. North of Susanville on Horse Lake Road (Lassen 546) 4.2 mi W of Hwy. 395. On the edge of the road. 1645 Comment
  CAS-BOT-BC254943  Poa bulbosa Clarence R. Quick 1962-6-17 62 -29 Lassen On Western Pacific RR, S of Halls Flat on Susanville-Pittville road at Blacks Mountain Experimental Forest Headquarters 1706 Comment
  JEPS117621  Poa compressa Lowell Ahart, John Dittes 2010-7-31 16992 Lassen On the bottom of a small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UCD90920  Poa cusickii Leo Whitney 1935-6-19 3265 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CAS-BOT-BC255021  Poa secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49521 Lassen Elysian Valley, W of Janesville 1325 Comment
  JEPS85786  Poa secunda Roy E. Buck and Robert A. Price 1988-6-26 1027 Lassen ca 30 air km nne Susanville (Fredonyer Peak, on subsidiary peak ca 0.5 air km n of main summit) 2377 Comment
  POM100297  Poa secunda Marcus E. Jones 1897-6-23 11426 Lassen Amedee. 1220 Comment
  POM112877  Poa secunda Marcus E. Jones 1897-6-19 11137 Lassen Chat 1616 Comment
  POM264256  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 mi west of Chester, Rte.36 Comment
  UC1951068  Poa secunda Debra Valov 2009-4-26 2009024 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET10522723  Poa secunda Jeffrey Huber 1971-6-2 Huber 106 Lassen 4 mi S of Adin along CA Hwy 139 in basalt-clay; valley floor in Artemesia. 1341 Comment
  CAS-BOT-BC236257  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-BC236258  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 miles E of Westwood on road to Fredonyer Pass 1584 Comment
  JEPS70648  Poa secunda subsp. juncifolia Dr. Longbridge 1912-1 Lassen Amadee Comment
  UC718010  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada 1341 Comment
  UCD92429  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
  UCD92432  Poa secunda subsp. juncifolia L. Whitney 1935-6-23 3289 Lassen Lassen National Forest. Near Fruit Grower's Supply Co., Camp 10. Comment
  SEINET7855100  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen R.R. station, Constantia Comment
  CAS-BOT-BC236182  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49188 Lassen Elysian Valley NW of Janesville 1325 Comment
  HSC79825  Poa secunda subsp. secunda William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UC1024839  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3217 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024874  Poa secunda subsp. secunda Leo Whitney 1935-5-26 3151 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1132875  Poa secunda subsp. secunda A. Simontacchi 1940-5-27 770 Lassen 9.3 mi nw Crater lake; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132879  Poa secunda subsp. secunda Robert W. Gardner 1937-6-16 G- 5 Lassen Burgess Spring Experimental Range; Halls Flat Quadrangle Comment
  UC1132882  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 747 Lassen 1.1 mi ssw Dixie Spring; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132883  Poa secunda subsp. secunda A. Simontacchi 1940-5-13 697 Lassen 4.6 mi sw of B. M. 7310 on Blacks Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1136989  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 219 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen Nat'l Forest 1722 Comment
  UC584341  Poa secunda subsp. secunda G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2322 Lassen ca 1 mi below summit Black Mt 1940 Comment
  UC70958  Poa secunda subsp. secunda M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  UC790959  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2794 Lassen 10 mi w Chester (Rte 36) Comment
  UCD92017  Poa secunda subsp. secunda A. H. Shunk 1923-8-20 s.n. Lassen Madeline. Comment
  UC1024807  Poa wheeleri Leo Whitney 1935-6-23 3286 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1136985  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experimental Range; Lassen Forest 1767 Comment
  UC1143003  Poa wheeleri August L. Hormay 1934-5-14 Lassen between Dixie Ranger Station and Patterson Flat; Lassen Nat'l Forest 1767 Comment
  UCD91756  Poa wheeleri L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp 10. Comment
  UCD80867  Pogogyne floribunda Robert E. Preston 2007-7-8 2570 Lassen Big Valley Mtns, 0.4 mi NE of Big Valley Summit, along Hwy 299. 1396 Comment
  CHSC67263  Polemonium micranthum James D. Jokerst 1991-5-29 3312 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of drainage. 1584 Comment
  OBI48165  Polemonium micranthum Rhonda Riggins 1989-4-27 1644 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  CAS-BOT-BC74171  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Highway 395. 1609 Comment
  RSA0065537  Polyctenium fremontii M. P. Harthill 1971-6-21 215 Lassen Susanville. Comment
  NY404577  Polygonum amphibium G. H. True Jr. 1936-6-22 514 Lassen Honey Lake Valley 1219.2 Comment
  JEPS50529  Polygonum amphibium var. emersum W. L. Jepson 7997 a Lassen Grasshopper Valley 1615 Comment
  UC1192333  Polygonum amphibium var. emersum Verne Grant and Irving Schneider 1947-7-30 8192 Lassen Tule Lake; s point of w embayment Comment
  UC6645  Polygonum amphibium var. stipulaceum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake 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
  RSA518872  Polygonum davisiae Barbara J. Ertter 1988-7-25 7863 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  CAS-BOT-BC414489  Polygonum douglasii Clare B. Hardham 1969-8-28 17432 A Lassen West of Janesville Comment
  HSC100804  Polygonum douglasii subsp. spergulariiforme Lowell Ahart, John Dittes 2010-7-31 16979 Lassen 100 yd. NE of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, 8.4 (air) mi. SE of Adin. 1521 Comment
  UC1553395  Polygonum douglasii subsp. spergulariiforme G. Schoolcraft 1988-6-15 1814 Lassen 16 mi e Adin; Ash Valley RNA/AEC 1584 Comment
  UC773926  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1767 Comment
  UC1603211  Polygonum polygaloides J. Guardino 1993-6-8 261 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 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
  CHSC61056  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald; Lowell Ahart 1993-8-3 5749 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. In small patches of more of less bare ground along the E side of the swamp. 1932 Comment
  JEPS51287  Polygonum polygaloides subsp. kelloggii Brown and Wieslander 1922-7-30 48 Lassen Martin Sprs. Eagle Lake Comment
  UC1060646  Polygonum polygaloides subsp. kelloggii Herbert L. Mason 1957-7-5 14712 Lassen between Madeline and summit of grade; Madeline Plains Comment
  UC1609438  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd (Lassen A1) 0.5 mi w Spaulding Tract Rd. (Rd. 518, 33N89) (ca 3 mi w of Eagle Lake) 1810 Comment
  CAS-BOT-BC232547  Polypogon monspeliensis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile W of Karlo Comment
  CHSC67067  Populus fremontii Willis Ball 1969-6-25 33 Lassen Found in Upper Murrer's Meadow. 1584 Comment
  CHSC13649  Porterella carnosula M. S. Taylor 1974-7-13 308 Lassen Abundant along edge of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi ne of Susanville. 1524 Comment
  CHSC29937  Porterella carnosula Robin L. Ondricek 1978-6-22 68 Lassen A the NE edge of Mahogany Lake. 2057 Comment
  CHSC5224  Porterella carnosula R. Gein 1946-6-11 Lassen Near Aspen Grove, Eagle Lake. 1615 Comment
  JEPS103627  Porterella carnosula Lisa Schultheis 1995-6-27 224 -95 Lassen large vernal pool at corner of 33N56Y and 33NO6. W of Champs Flat Comment
  JEPS28708  Porterella carnosula George W. Gillett 1957-7-29 938 Lassen near w end Widow Lake (Widow Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Widow Lake 2072 Comment
  UC195849  Porterella carnosula Franklin P. Nutting Lassen flat near Eagle Lake; near Eagle Lake Comment
  OBI75891  Porterella carnosula Anthony Baniaga and D. Lepley, D. Lepley 2011-8-17 502 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1905 Comment
  SEINET10460819  Porterella carnosula G. Ledyard Stebbins 1949-8-6 Stebbins 4002 Lassen Edge of Feather Lake, between Susanville and McArthur. Mud flats 1676 Comment
  SEINET10460828  Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 Holmgren 9463 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi.) south of Madeline. T36N R13ES9 1620 Comment
  SEINET10460829  Porterella carnosula Howell 1934-7-7 Howell 12466 Lassen Near Feather Lake Comment
  SEINET5334401  Portulaca oleracea Unknown 1942-8-31 s.n. Lassen Honey Lake Valley. 1067 Comment
  JEPS103225  Potamogeton alpinus subsp. tenuifolius G. Schoolcraft 1996-9-11 2564 Lassen Willow Creek below petroglyphs and above dam 1432 Comment
  UC1609364  Potamogeton diversifolius Vernon H. Oswald and Lowell Ahart 1993-7-8 5666 Lassen ne edge of Poison Lake (2.4 mi n of Hwy 44, Pittville Road (Lassen 111, 36N01)) 1705 Comment
  POM118853  Potamogeton foliosus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1100045  Potamogeton foliosus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1477 Lassen 1 mi n of Doyle (banks of Long Creek); Honey Lake Valley Comment
  OBI77555  Potamogeton natans Anthony Baniaga 2011-7-23 458 Lassen Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4 1700 Comment
  UCD170231  Potamogeton natans K. M. Meyer; A. Townesmith 2007-7-21 146 Lassen Lassen National Forest. 1.3 mile on Road 10 to Silver Lake off Road 110. 1963 Comment
  JEPS103226  Potamogeton nodosus G. Schoolcraft 1996-9-11 2563 Lassen Willow Creek below petroglyphs above dam 1341 Comment
  UC1100072  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-9-6 8380 Lassen n arm of Eagle Lake Comment
  UC1100077  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-30 8196 Lassen w end of Tule Lake Comment
  CAS-BOT-BC454029  Potamogeton pusillus subsp. pusillus Arnold Tiehm; Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line 1698 Comment
  CHSC55814  Potamogeton richardsonii Vernon H. Oswald 1991-9-23 4876 Lassen Lassen Volcanic National Park. Butte Lake in the northeast corner of the park. At the first spit of land extending into the lake south of its outlet. 1841 Comment
  CAS-BOT-BC143111  Potentilla breweri M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CHSC60395  Potentilla flabellifolia Mary Ann Showers 1992-6-13 2553 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CDA26098  Potentilla glandulosa T. C. Fuller 1963-7-15 10903 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC60849  Potentilla glandulosa subsp. ashlandica Vernon H. Oswald; Lowell Ahart 1993-6-28 5613 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. On the edge of vernal pool. 1798 Comment
  POM34025  Potentilla glandulosa subsp. ashlandica Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  JEPS107940  Potentilla gracilis var. elmeri Lowell Ahart, John Dittes 2005-6-1 11854 Lassen Long Valley, on the west side of the poor dirt road, about 1/2 mile west of Scott Road, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC146438  Potentilla gracilis var. elmeri J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  UC506926  Potentilla millefolia George A. Fischer and Irwin H. Johnson 1933-7-14 F. 240 Lassen Patterson R.S. Lassen National Forest, Patterson R.S. 1737 Comment
  CHSC117509  Poteridium annuum Lowell Ahart; John Dittes 2016-7-13 21135 Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 mile south of County Road A-2, 5.3 miles(air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  CHSC66401  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1996-6-17 7787 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  CHSC106674  Prunus andersonii B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 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
  CHSC6286  Prunus virginiana var. demissa R. Clicquennoi 1967-7-1 22 Lassen 4 mi s of Eagle Lake Biological Station, on Gallatin Beach Rd. 1554 Comment
  UC773874  Prunus virginiana var. demissa L. R. Short, Wm. Gansberg 1936-7-3 S 466 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1847 Comment
  UCD113534  Prunus virginiana var. demissa W. Robert Powell 1985-7-30 3080 c Lassen about 3 miles WNW of Susanville on narrow flood plane of Piute Creek. 1402 Comment
  CAS-BOT-BC239796  Pseudoroegneria spicata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  UC1143002  Pseudoroegneria spicata subsp. spicata August L. Hormay 1934-5-15 Lassen 15 mi n of Hall's Flat (Lassen Forest and Range Experiment Station, Lassen National Forest); Lassen Forest and Range Experiment Station, Lassen National 1524 Comment
  UC60834  Pseudoroegneria spicata subsp. spicata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Amedee; Honey Lake Valley, Amedee Comment
  JEPS127273  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2016-7-13 21110 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
  UC35755  Psilocarphus brevissimus var. brevissimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3381 Lassen Honey Lake Valley Comment
  CDA27774  Psoralidium lanceolatum S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  NY702519  Psoralidium lanceolatum J. T. Howell 1934-6-10 11860 Lassen Doyle Comment
  CAS-BOT-BC460510  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile E of Westwood 1524 Comment
  JEPS123867  Puccinellia distans Lowell Ahart, John Dittes 2015-7-14 20330 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC99494  Puccinellia lemmonii Lowell Ahart; John Dittes 2008-6-20 14967 Lassen Saline area, about 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0042600  Puccinellia lemmonii Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1008 Comment
  SEINET4890224  Puccinellia lemmonii N. H. Holmgren, P. Holmgren 1978-6-13 8939 Lassen 2.7 km (1.7mi) north-west of Wendel. 1250 Comment
  SJSU14476  Purshia tridentata W. D. Pitts 1990-5-24 300 Lassen by Hwy 395, 5 mi N of Doyle 1310 Comment
  SJSU14478  Purshia tridentata W. D. Pitts 1970-5-29 301 Lassen by Hwy 395, 5 mi N of Doyle Comment
  SEINET3394464  Purshia tridentata E. D. McArthur 1982-1 EDM- 1356 Lassen NW of Janesville at Jct of crossroads 205 & 219 Comment
  CAS-BOT-BC147820  Purshia tridentata var. tridentata R. F. Thorne; C. W. Tilforth 1969-9-6 39253 Lassen C. 14 miles SE of Milford along Long Valley Creek 1310 Comment
  CAS-BOT-BC147824  Purshia tridentata var. tridentata M. S. Taylor 1982-5-7 4431 Lassen Reno Junction on Hwy 70, just e of Beckwourth Pass 1524 Comment
  CHSC105257  Purshia tridentata var. tridentata Lowell Ahart; John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC66399  Purshia tridentata var. tridentata Vernon H. Oswald; Lowell Ahart 1996-6-17 7769 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Along the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  HSC79989  Purshia tridentata var. tridentata William Rothstrom 1975-6-9 Lassen Johnstonville, 1/4 mi. S of Hwy. 395, W of airport. 1265 Comment
  RSA122150  Purshia tridentata var. tridentata G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 212 Lassen Lassen Forest. 1723 Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. Comment
  CAS-BOT-BC462757  Pyrola dentata John Thomas Howell; Gordon H. True 1973-7-31 50023 Lassen Sierra Nevada: on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  CAS-BOT-BC462758  Pyrola dentata Louella Bass 1973-6-23 EU- 130 Lassen Elysian Valley 1325 Comment
  RSA0083372  Pyrola dentata Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  UC70346  Pyrola picta Milo S. Baker 1890-1 Lassen Milford Comment
  OBI75873  Pyrola picta Anthony Baniaga 2011-8-10 496 Lassen Lassen Natl Forest. About 1/4 mi SE of Swain Mdw, S of Robbers Ck. Swain Mtn quad T29N R8E sec 35 NE of SW 1721 Comment
  CHSC52666  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains. 1614 Comment
  CAS-BOT-BC362319  Pyrrocoma racemosa var. paniculata John Thomas Howell 1951-8-20 28227 Lassen Honey Lake Valley near Herlong 1280 Comment
  CDA18269  Pyrrocoma racemosa var. paniculata G. D. Barbe 1974-8-2 1934 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC94255  Quercus garryana Alice Eastwood; John Thomas Howell 1940-6-11 7966 Lassen Eastern Fall River Valley Comment
  CAS-BOT-BC105247  Quercus kelloggii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49159 Lassen Elysian Valley NW of Janesville 1325 Comment
  UC1035885  Quercus kelloggii Annie M. Alexander and Louise Kellogg 1946-8-14 5158 Lassen Susanville, on hill back of town Comment
  OBI77065  Quercus palustris Anthony Baniaga 2011-10-15 516 Lassen Susanville. Lassen County superior court parking lot. Susanville quad T30N R12E sec 33 SW of SW 1280 Comment
  CHSC25909  Ranunculus K. R. Stern 1967-6-25 2434 Lassen Meadow on road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  UC773871  Ranunculus alismifolius var. alismifolius L. R. Short 1936-4-28 S- 339 Lassen Harvey Valley Lassen <National> Forest 1706 Comment
  HSC18114  Ranunculus alismifolius var. hartwegii R. J. Vernimen 1963-5-4 49 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
  RSA399361  Ranunculus alismifolius var. hartwegii Christopher Davidson 1975-6-6 2720 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  CHSC41844  Ranunculus aquatilis var. capillaceus P. V. Caldwell 1972-7-12 284 Lassen Floating on pools and on banks of Papoose Creek. Comment
  CHSC117213  Ranunculus arvensis Lowell Ahart; John Dittes 2016-6-7 21003 Lassen Near 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
  CHSC4872  Ranunculus cymbalaria R. Carter 1967-6-23 548 Lassen In meadow, upper Murrer's Meadow. Comment
  CHSC13944  Ranunculus cymbalaria var. saximontanus M. S. Taylor 1974-6-27 268 Lassen Around marsh, ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC75526  Ranunculus cymbalaria var. saximontanus Vernon H. Oswald; Lowell Ahart 1999-6-9 9757 Lassen Northeast of Susanville and 4.1 mi south of Biscar Wildlife Management Area on BLM 26030 at the water crossing on Secret Creek. 1347 Comment
  RSA152629  Ranunculus cymbalaria var. saximontanus I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16345 Lassen N of road 13.5 miles E of Susanville Comment
  HSC103655  Ranunculus flammula Thomas W. Nelson, Jane Nelson 1985-8-10 8026 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  CHSC117275  Ranunculus macounii Lowell Ahart; John Dittes 2016-7-15 21219 Lassen About 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD96933  Ranunculus occidentalis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely). 1905 Comment
  JEPS118446  Ranunculus occidentalis var. occidentalis Lowell Ahart, John Dittes 2011-6-20 17479 Lassen 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
  CHSC7731  Ranunculus orthorhynchus Beverley J. Wise 1969-4-28 88 Lassen 9 mi. east of Susanville on south side of Las. Co. Rd. 215. Meadow. 1371 Comment
  POM312416  Ranunculus sceleratus Malcolm A. Nobs, S. Galen Smith 1949-7-21 1050 Lassen Small marshy creek, 1 mile E of Maderline, Comment
  CDA24351  Ranunculus sceleratus var. multifidus D. L. Haws 1974-5-3 Lassen Railroad right-of-way near Susanville. 0 Comment
  CDA24358  Ranunculus testiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 C Lassen Wendel. 0 Comment
  CHSC27740  Ranunculus uncinatus Jennifer Estep 1978-7-5 10 Lassen E side of Mahogany L. 2060 Comment
  SEINET5338927  Ranunculus uncinatus var. uncinatus M. J. Williams 1984-6-16 84- 32 -1 Lassen Road from Doyle to Frenchman's Reservoir, 0.9 miles towards Frenchman's, 8.6 miles from Doyle. Comment
  CHSC115029  Rhamnus alnifolia Stephanie Puentes 2011-8-16 Lassen E of Lake Almanor and NE of Dyer Mtn. Dense thicket on both sides of stream. 1824 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
  CHSC12425  Ribes cereum Anne Linda Brisk 1969-6-20 15 Lassen Found 1/4 mi NE ELBS in flat, basaltic, rocky area. 1554 Comment
  CHSC67058  Ribes cereum Willis Ball 1969-6-19 8 Lassen Found approx. 100 yds. N.E. of E.L.B.S. 1615 Comment
  NY455007  Ribes cereum B. M. Bartholomew 1988-7-22 4503 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC747359  Ribes cereum G. Thomas Robbins 1945-10-6 2149 Lassen summit Crater Lake Mt. (above lake); Lassen National Forest 2194 Comment
  JEPS87426 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1993-6-3 54887 Lassen just s of ford over Pine Creek (Champs Flat Rd (Lassen 105, Forest 32N28Y), 7.0 mi n of tis junction w Lassen 21 (32N02) to Eagle Lake, between Poison Lake and Susanville); Champs Flat Rd, Lassen 105, Forest 32N28Y 1688 Comment
  UC699688  Ribes hudsonianum var. petiolare J. L. Mielke, J. W. Kimmey 1941-6-29 Lassen Silver Creek (Lost Lake) Warner Mountains, Modoc National Forest Comment
Read comments
Jul 19 2010
  CAS-BOT-BC212579  Ribes montigenum Alice Eastwood 1912-8-22 1863 Lassen Trail from Morgan Springs to Lassen Butte Comment
  JEPS28697  Ribes roezlii George W. Gillett 1957-7-26 917 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  RSA0024767  Ribes roezlii James Henrickson 1969-9-4 4267 Lassen 4 miles S of Westwood along Highway 147. 1390 Comment
  HSC20364  Ribes velutinum L. H. Myers 1963-4-6 37 Lassen 1.0 mi. S of Janesville 1280 Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 Comment
  OBI75884  Ribes velutinum Anthony Baniaga 2011-7-1 414 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  RSA0023962  Ribes velutinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC117224  Rigiopappus leptocladus Lowell Ahart; John Dittes 2016-6-7 20976 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
  SD131593  Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen south side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from susanville to Alturas west of the highway 1385 Comment
  OBI76971  Rorippa columbiae Anthony Baniaga 2011-7-24 464 Lassen Lassen NAtl forest. Windy Hollow. Pine Crk Valley quad T31N R8e sec 15 NE of SE 1720 Comment
  CAS-BOT-BC74533  Rorippa curvisiliqua Al Simontacchi 1940-6-4 806 Lassen Lassen Forest. 14.8 miles west of Harvey Mountain Lookout. 1783 Comment
  RSA0065538  Rorippa curvisiliqua Marion P. Harthill 1971-6-20 216 Lassen Susanville. Comment
  CHSC99504  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2008-6-20 14937 Lassen On the edge of Big Valley Canal and in vernal pools, 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
  JEPS121254  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-7-22 18855 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC36472  Rorippa nasturtium-aquaticum Jeffrey R. Peek 1982-6-4 33 Lassen Ca. 50 yds along Willow Creek from its beginning in Murrers Upper Meadow. Comment
  CHSC113076  Rorippa palustris subsp. hispida Lowell Ahart; John Dittes 2013-7-22 18864 Lassen North margin of a duck field, 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
  CHSC5241  Rorippa palustris var. occidentalis V. Holt 1945-6-5 Lassen Aspen Grove, Eagle Lake. 1584 Comment
  JEPS95871  Rorippa sinuata Vernon H. Oswald and L. Ahart 1999-6-9 9735 Lassen Hwy. 395 northeast of Susanville and north of Smoke Creek Ranch Rd. at Mud Flat: T30N R15E Sect. 3, 4425 ft elevation, dry playa surrounded by sagebrush scrub. Small part of a perennial forming a colony on the bank between the highway and the playa. 1348 Comment
  NY182161  Rorippa sinuata G. Schoolcraft 1983-6-22 1018 Lassen Comment
  NY661122  Rorippa sinuata B. Corbin 2002-6-4 1079 Lassen Deep Creek crossing of Highway 395. 1350.3 Comment
  UC1128595  Rosa bridgesii A. Simontacchi 1940-6-24 722 Lassen 6.4 miles S. W. of Jacks Lake Halls Flat Quad. 1950 Comment
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  CDA26287  Rosa woodsii var. ultramontana Gordon Leppig, T. LaBlanca 1998-7-13 874 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  JEPS47284  Rosa woodsii var. ultramontana W. L. Jepson 1939-8-11 19372 Lassen Milford 1280 Comment
  CHSC66728  Rotala ramosior Vernon H. Oswald; Lowell Ahart 1996-8-1 8105 Lassen Mountain Meadows Reservoir SW of Westwood. Growing on the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  CHSC60401  Rubus parviflorus Mary Ann Showers 1992-6-13 2556 Lassen Lassen Volcanic National Park. Southwest of Widow lake. 2072 Comment
  JEPS28496  Rubus parviflorus George W. Gillett 1957-7-26 912 Lassen Butte Lake Lassen Volcanic National Park, Butte Lake 1844 Comment
  CHSC106088  Rumex acetosella Lowell Ahart; John Dittes 2010-7-31 17001 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
  CHSC112845  Rumex crispus Lowell Ahart; John Dittes 2013-7-22 18865 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
  UC1191289  Rumex crispus Malcolm A. Nobs and S. Galen Smith 1949-8-20 1481 Lassen 1 mi n Doyle; Long Creek Comment
  CAS-BOT-BC433245  Rumex crispus Louella Bass 1973-6-15 EV- 108 Lassen Elysian Valley 1325 Comment
  CHSC76101  Rumex fueginus Lowell Ahart; Vernon H. Oswald 1999-9-13 8214 Lassen On the edge of a flooded canal, just 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
  JEPS121295  Rumex fueginus Lowell Ahart 2013-7-22 18849 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
  JEPS39934  Rumex salicifolius var. lacustris W. L. Jepson 1918-8-15 7997 Lassen Grasshopper Valley 1615 Comment
  JEPS114648  Rumex salicifolius var. triangulivalvis Lowell Ahart, John Dittes 2008-6-20 14930 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS121296  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, 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
  JEPS121294  Rumex triangulivalvis Lowell Ahart, John Dittes 2013-7-22 18867 Lassen 30 yards S of the man-made pond, about 120 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  POM203794  Rumex venosus J. T. Howell 1934-7-8 12486 Lassen Spaldings Resort; Eagle Lake Comment
  SEINET8584738  Rumex venosus W. Harnach 2011-6-4 1247 Lassen NE slope of Turtle Mtn., Fort Sage Mtns., Honey Lake Valley, approx. 7.5 miles NE of Doyle, CA on the Fort Sage Road. 1329 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
  CHSC61063  Sagittaria cuneata Vernon H. Oswald; Lowell Ahart 1993-8-3 5753 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the N edge of the swamp. 1932 Comment
  UC935793  Sagittaria cuneata Calvin McMillan and Malcolm A. Nobs 1949-6-15 785 Lassen Nubieber Comment
  CHSC117274  Sagittaria montevidensis subsp. calycina Lowell Ahart; Joh Dittes 2016-7-15 21222 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
  CAS-BOT-BC102813  Salix boothii Mrs. H. P. Bracelin 1934-6-14 821 Lassen Upper Silver Creek, near Silver Lake (Lost Lake), Warner Mountains 2316 Comment
  CAS-BOT-BC108055  Salix exigua John Thomas Howell 1975-7-23 51403 Lassen Wet ground along Hwy. 395 between Johnstonville and Jonesville - Sierra Nevada 1280 Comment
  CHSC106585  Salix exigua C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  JEPS88245  Salix exigua Vernon H. Oswald and Lowell Ahart 1996-6-17 7784 Lassen n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (ditch along trail, trail accessed at Devils Corral Trailhead off of hwy, w of Susanville); Modoc Plateau 1432 Comment
  RSA0035819  Salix exigua Lowell A. Ahart, John Dittes 2008-6-22 15043 Lassen In Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. 1257 Comment
  CAS-BOT-BC107958  Salix geyeriana John Thomas Howell 1976-7-20 s.n. Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass - Sierra Nevada 1432 Comment
  CAS-BOT-BC128225  Salix lasiandra subsp. caudata James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-24 4121 Lassen Willow Creek Campground on road between Adin and Said Valley Reservoir Comment
  CAS-BOT-BC124560  Salix lemmonii Mrs. H. P. Bracelin 1934-6-14 822 Lassen Upper Silver Creek, near Silver Lake (Lost Lake), Warner Mountains 2316 Comment
  CHSC13668  Salix lemmonii E. L. Smith 1971-4-28 946 A Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  UC433175  Salix lemmonii Franklin P. Nutting 1900-7-28 Lassen Bridge Creek Comment
  CAS-BOT-BC126176  Salix scouleriana John Thomas Howell 1969-8-7 45885 Lassen Between Butte Lake and Cinder Cone, Lassen Park Comment
  CDA36352  Salsola gobicola B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  CHSC71874  Salsola tragus Vernon H. Oswald; Lowell Ahart 1998-9-8 9582 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  JEPS59867  Salsola tragus W. L. Jepson 1918-8-2 7791 Lassen Long Valley 1219 Comment
  CAS-BOT-BC176903  Salsola tragus Margaret Williams; Steven Williams 1974-7-26 74 -L-7 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC42206  Salvia dorrii C. E. Laver 1985-6-1 Lassen Ca. 5.5 mi ne of Litchfield and 5 mi nw of Wendel. 1371 Comment
  SEINET7976568  Salvia dorrii M. J. Williams, A. Tiehm, J. Nachlinger 1988-1 88- 27 -1 Lassen Hwy 395 0.4 mile east of Susanville road after turn to Alturas. Comment
  JEPS62690  Salvia dorrii var. incana Duncan Dunning 1923-6-6 Lassen rocks below Ravendale Comment
  CAS-BOT-BC214310  Salvia dorrii var. pilosa H. D. Ripley; R. C. Barneby 1944-5-30 5966 Lassen Secret Valley 1524 Comment
  SEINET12319555  Sambucus caerulea Unknown 1978-1 27 Lassen SE end of Eagle L., base of basalt boulders from Black Mnt., T32N,R11E, sec.22 1609 Comment
  UC1523804  Sambucus mexicana Gary Schoolcraft 1982-8-4 850 Lassen on road to Hayden Hill about 1/2 mi s Hwy 139 (37-10-29) 1524 Comment
  CAS-BOT-BC238592  Sambucus nigra subsp. caerulea John Thomas Howell 1974-7-10 50548 Lassen Elysian Valley 1325 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
  JEPS85836  Sambucus racemosa var. microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 air mi s of Susanville); Diamond Mts. 2255 Comment
  POM90118  Sanguisorba annua Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  JEPS103224  Sanicula graveolens G. Schoolcraft 1992-5-1 2235 Lassen W. of Susan Hills Subd. SW. of Susanville 1341 Comment
  CHSC115590  Saponaria officinalis Lowell Ahart; John Dittes 2015-7-14 20323 Lassen About 100 yards west of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  CDA23525  Sarcobatus vermiculatus M. R. Pryor 1953-9-22 Lassen 0.5 mile west of Jack Crow s property, Stacey. 0 Comment
  CHSC110311  Sarcobatus vermiculatus L. P. Janeway; B. Castro 2012-7-2 10923 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  HSC4526  Sarcobatus vermiculatus Fred J. Kindel 1955-7-14 Lassen Wendel, Hot Springs Comment
  JEPS59876  Sarcobatus vermiculatus W. L. Jepson 1918-8-4 7805 Lassen Horse Lake 1554 Comment
  UC1537040  Sarcobatus vermiculatus Gordon H. True Jr. 1936-6-21 519 Lassen Honey Lake Valley 1219 Comment
  CHSC4972  Sarcodes sanguinea R. Carter 1967-6-22 536 Lassen ca 1/4 mi S of Five Corners on Peans Ridge Road. 1584 Comment
Read comments
Jan 31 2011
  JEPS59098  Sarcodes sanguinea Mary G. Clark 1918-5-24 Lassen Westwood, Lassen Co. Comment
  CAS-BOT-BC283086  Schedonorus arundinaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49474 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  RSA300132  Schedonorus arundinaceus J. T. Howell, Gordon H. True 1973-8-1 50185 Lassen Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  UC1142964  Schoenoplectus acutus var. acutus A. L. Hormay 1941-6-17 23 Lassen meadow lake near Westwood; Lassen National Forest, meadow lake near Westwood 1615 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
  UC1254995  Scirpus microcarpus Alan A. Beetle 1941-6-28 2893 Lassen Rt. 36 10 mi w Chester; w of Chester 1524 Comment
  JEPS95894  Scirpus nevadensis Lowell Ahart 1999-9-13 8228 Lassen on the south side of Mapes Road; about 200 yards east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  CAS-BOT-BC240001  Scribneria bolanderi Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 759 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  POM313136  Scribneria bolanderi H. L. Mason, Malcom A. Nobs, S. Galen Smith 1949-5-29 759 Lassen On Great Northern Railroad , Highway 299, Nubeiber. Comment
  CHSC5917  Scrophularia californica subsp. floribunda J. B. Kimsey 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1615 Comment
  JEPS29096  Scrophularia lanceolata Lauramay T. Dempster 1961-6-17 1674 Lassen ca 4 mi n of Karlo Rd junction with Hwy 395 1432 Comment
  RSA0003996  Scutellaria holmgreniorum Noel Holmgren, Pat Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km. from U.S. Hwy. 395 via Rye Patch Can. 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-BC214265  Scutellaria nana Clarence R. Quick 1966-7-22 66 -50 Lassen Susanville-Pittville Road, Blacks Mtn. Hdqts., Halls Flat, 9 m. e. of Hat CreekRocky campgd. 1706 Comment
  JEPS88204  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1996-6-24 7863 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, on w side of Papoose Meadows 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  RSA488564  Scutellaria nana Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8591 Lassen Flats on the northwest side of Schaffer Mountain, 7.5 air miles north-northwest of Litchfield 1372 Comment
  RSA719468  Scutellaria nana L. P. Janeway 2005-4-7 84614 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 534 Comment
  SEINET10499152  Scutellaria nana Mary Merello 1993-6-28 Merello 750 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1137689  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest, Lassen Forest and Range Experiment Station Lassen National Forest; , Lassen Forest and Range Experiment S 1722 Comment
  UC773951  Scutellaria nana L. R. Short, J. Warren 1936-6-23 S 445 Lassen Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1809 Comment
  CAS-BOT-BC240084  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16342 Lassen 13.5 mi. E. of Susanville Comment
  CAS-BOT-BC240086  Secale cereale David D. Keck; J. Clausen 1935-6-24 3750 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC46021  Sedum lanceolatum John Thomas Howell; Gordon True; Wayne Dakan 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2346 Comment
  NY758141  Sedum lanceolatum J. T. Howell 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2286 Comment
  CDA34518  Senecio aronicoides B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  CHSC114299  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 Lassen South of Adin; Hwy. 139 at Milepost 58. On both sides of the road. Comment
  CHSC60327  Senecio fremontii var. fremontii Mary Ann Showers 1992-6-28 2700 Lassen Lassen Volcanic National Park. Cliffs west of Soda Lake and below tarn at base of north facing cirque between Pilot Pinnacle and Mt. Diller. 2438 Comment
  UC1070219  Senecio integerrimus var. exaltatus K. E. Bradshaw 1939-5-27 239 Lassen Black Mountain Experimental Forest, Plot 39-1 Lassen National Forest, Halls Flat Quad. 1767 Comment
  CDA8673  Senecio pseudaureus var. pseudaureus Gordon Leppig 1998-7-12 948 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  CHSC13513  Senecio triangularis J. Pitts 1972-7-22 337 Lassen Found ca. .5 mi past Lassen Park gate. Comment
  UC1562580  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 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
  SD8445  Sibbaldia procumbens Mrs. R. M. Austin 1882-8-7 Lassen King's Valley Comment
  UCD116670  Sidalcea glaucescens C. J. W. 1913-6-1 9 Lassen Grass Valley. Comment
  CAS-BOT-BC205782  Sidalcea oregana Alice Eastwood; John Thomas Howell 1940-6-11 7999 Lassen Bieber Comment
  JEPS15485  Sidalcea oregana subsp. oregana Joseph and Hilda Grinnell 1938-6-13 1099 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  POM260184  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA647545  Sidalcea oregana subsp. oregana Marion P. Harthill 1971-6-21 204 Lassen Susanville. Comment
  CHSC100901  Sidalcea oregana subsp. spicata R. A. Schlising; Peter Metropulos 1974-7-22 3154 Lassen South of Eagle Lake at Colman Lake. Comment
  RSA31660  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 2 miles E of Westwood. 1524 Comment
  SEINET246897  Sidalcea oregana var. maxima Unknown 1988-6-2 11704 Lassen East side of Snowshoe Mt., 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway. 1402 Comment
  CAS-BOT-BC384312  Silene bernardina Clarence R. Quick 1966-7-22 66 -52 Lassen Susanville-Pittville road, Blacks Mtn. Hdqts.; Halls Flat, 9 m. e. of Hat Creek 1706 Comment
  JEPS28444  Silene bernardina George W. Gillett 1957-8-28 928 Lassen on trail to Widow Lake above junction with Snag Lake Trail (upper end of butte Lake Lassen Volcanic National Park); Lassen Volcanic National Park, upper end Butte Lake 1859 Comment
  RSA123272  Silene bernardina L. R. Short, D. Gish 1936-7-15 S- 487 Lassen MDM, Burgess Spr. Exp. Range; Forest: Lassen. 1744 Comment
  SBBG71651  Silene bernardina S. W. Hutchinson -Jun-1925 72 Lassen near Eagle Lake 1554 Comment
  CHSC54863  Silene invisa Vernon H. Oswald 1991-8-23 4844 Lassen Lassen Volcanic National Park. Trail from Juniper Lake Campground to the outlet of Juniper Lake, just west of the former. 2060 Comment
  CAS-BOT-BC389543  Silene nuda H. D. Ripley; R. C. Barneby 1943-6-13 5686 Lassen Milford 1264 Comment
  JEPS50951  Silene occidentalis subsp. occidentalis Brown and Wieslander 1922-7-23 32 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  CHSC5235  Sisymbrium altissimum L. Harman 1946-6-26 Lassen Webb's, Eagle Lake. 1584 Comment
  HSC27354  Sisymbrium altissimum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19283 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC1126792  Sisymbrium altissimum E. Sawyer 1935-6-27 224 Lassen Long Valley 1310 Comment
  RSA152595  Sisymbrium altissimum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16333 Lassen 13.5 miles E of Susanville. Comment
  CHSC29896  Sisyrinchium idahoense Fobin L. Ondricek 1978-6-16 60 Lassen In the meadow below the dam at Upper Murrers Meadow. 1548 Comment
  UC1542947  Sisyrinchium idahoense var. idahoense G. Schoolcraft 1987-6-23 1749 Lassen along Ash Valley Rd. Ash Valley 1554 Comment
  UC3888  Smilacina stellata J. Burtt Davy Jun 17 1897-Jun 24 1897 3387 Lassen Adobe Meadows Honey Lake Valley, Byer's Ranch Comment
  CDA34234  Solanum sarrachoides L. Ahart, J. Dittes 2010-8-31 17138 Lassen On the east side of Walters Road, 4,235 feet from Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley. Comment
  RSA128298  Solanum triflorum Peter H. Raven, Otto T. Solbrig 1958-6-17 13267 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  CAS-BOT-BC364907  Solidago velutina subsp. californica Louella Bass 1973-9-4 EV 134 Lassen Elysian Valley 1325 Comment
  CHSC65299  Solidago velutina subsp. californica Vernon H. Oswald 1995-8-21 7207 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the W side of the lake. 1859 Comment
  HSC95310  Sparganium emersum Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 691 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA37488  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC27654  Sparganium emersum subsp. emersum Jerry Snodgrass 1978-7-11 50 b Lassen Papoose Creek, SE corner of Eagle L. Meadow; in pool. 1584 Comment
  CHSC96734  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CAS-BOT-BC149623  Spiraea douglasii Louella Bass 1973-6-17 EV - 118 Lassen Elysian Valley 1325 Comment
  JEPS128408  Spiraea douglasii Catherine Bauer with Ellen Bauer Benson 2017-8-16 16 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC845562  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen meadow about 1 mi e Westwood 1524 Comment
  CHSC5276  Stachys ajugoides var. rigida L. Harman 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  JEPS63054  Stachys ajugoides var. rigida Brown and Wieslander ca. 1914 57 Lassen near Eagle Lake; Martin Sprs. Comment
  HSC31740  Stanleya elata Donald Spalinger 1974-5-16 66 Lassen E of Hurlong in the Doyle Winter Deer Range 1220 Comment
  CHSC64776  Stanleya pinnata var. pinnata Vernon H. Oswald 1995-6-7 6841 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 19.5 just w of Skedaddle Creek, e of Wendel, ne of Susanville. Flat bordering the road. 1237 Comment
  CAS-BOT-BC391079  Stellaria longipes subsp. longipes B. C. Cain 1925-8-24 69 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park Comment
  HSC95299  Stellaria longipes subsp. longipes Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 544 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC229  Stellaria longipes var. longipes 1944-6-30 Lassen Grasshopper Valley near Eagle Lake. 1615 Comment
  UC1523750  Stellaria longipes var. longipes Gary Schoolcraft 1981-6-25 484 Lassen e fork Willard Creek 1584 Comment
  CHSC68737  Stenotus acaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8507 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. Between the road and a small creek paralleling the road on the north. 1560 Comment
  JEPS89748  Stenotus lanuginosus var. lanuginosus Dean Wm. Taylor with Glenn L. Clifton 1992-5-7 12545 Lassen ca. 0.4 mi. from Hwy. 139 on rd. to Smith Flat (Willow Creek drainage); Modoc Plateau, Land Reservoir 7 1/2 Quad. 1990 ed., Willow C 1524 Comment
  JEPS109943  Stenotus stenophyllus Dean W. Taylor 2004-5-12 19065 Lassen Willow Creek, along Forest Road 38N04 0.4 miles North of Highway 139 1584 Comment
  CAS-BOT-BC375066  Stephanomeria Gordon H. True 1973-8-22 7657 Lassen North shore of Honey Lake ca. 5 miles east of Janesville & just west of Hartson Reservoir 1219 Comment
  UC1523770  Stephanomeria lactucina Gary Schoolcraft 1981-7-7 496 Lassen on slopes n Landon Lookout 2011 Comment
  CHSC71870  Stephanomeria paniculata Vernon H. Oswald; Lowell Ahart 1998-9-8 9588 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  UCR57502  Stephanomeria spinosa R. D. Goeden, Don W. Ricker 1989-8-22 890822- 10 Lassen Modoc Plateau, Horse Lake Road, just east of Hansen Road, SW of Ravendale 1567 Comment
  CAS-BOT-BC322925  Stephanomeria tenuifolia Clarence R. Quick 1964-8-5 64 -95 Lassen Cal Mt. east of Poison Lake 1767 Comment
  UCR67447  Stephanomeria virgata George K. Helmkamp 1990-9-23 D- 8 Lassen 20 mi north of Litchfield along US Hwy 395 1437 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
  CHSC57125  Streptanthus Mary Meyer 1980-7-21 Lassen Near sharp bend in road on way to Fire Lookout. 2316 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
  SEINET8501999  Streptopus amplexifolius C. G. Gulling 1905-1 1545 Lassen Big Meadows. Comment
  UCD138352  Stuckenia pectinata Verne Grant; Irving Schneider 1947-8-1 8244 Lassen East end of Tule Lake. Comment
  UCD149959  Stuckenia striata William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  JEPS47014  Swertia albicaulis var. albicaulis Jos. Grinnell Lassen Eagle Lake 1584 Comment
  JEPS94613  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8488 Lassen e side of Hwy 139 at a small farm stock pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  UC1123452  Swertia albicaulis var. albicaulis A. Simontacchi 1940-6-6 823 Lassen 3.6 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC1123453  Swertia albicaulis var. albicaulis Robert W. Gardner 1937-6-16 G- 13 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1798 Comment
  CHSC36147  Symphoricarpos rotundifolius var. rotundifolius George Deniso 1978-7-21 95 Lassen Several meters S of Colman Lake, SE of Eagle L., 1962 Comment
  SEINET1906280  Symphyotrichum ascendens Barbara Ertter 1987-1 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; 1524 Comment
  UC1192207  Symphyotrichum ascendens Verne Grant and Irving Schneider 1947-9-6 8391 Lassen near, (w of Fleming Ranch Headquarters) Wendel Comment
  UC1949147  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment
  SD64326  Symphyotrichum campestre Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395 1675 Comment
  CAS-BOT-BC98933  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1917 Lassen Battle Creek Meadows - Lassen Butte Region Comment
  CHSC59076  Symphyotrichum frondosum Vernon H. Oswald; Lowell Ahart 1992-8-25 5185 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1851 Comment
  UC1523754  Symphyotrichum frondosum Gary Schoolcraft 1981-7-20 521 Lassen Said Valley Reservoir 1630 Comment
  CAS-BOT-BC97918  Symphyotrichum frondosum G. D. Hanna 1958-9-20 s.n. Lassen Cold Spring - Eastern Lassen Co. Comment
  UCD136611  Symphyotrichum lanceolatum var. hesperium G. Schoolcraft 1996-9-9 2583 Lassen lower end of Willow Creek. 1310 Comment
  CAS-BOT-BC98542  Symphyotrichum spathulatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49450 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  CHSC92950  Symphyotrichum spathulatum var. spathulatum L. P. Janeway 2005-7-31 8513 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  UCD136663  Symphyotrichum