Search Results — 2000 specimen records retrieved (1618 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
  CDA465  Abies concolor Mark Lubinski 2000-10-12 PDR# 1103214 Lassen 5 mi. W of Susanville by Hwy. 44. Comment
  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
  SEINET11305032  Abies concolor var. lowiana D. Charlet 1996-7-8 2287 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1622 Comment
  CHSC13794  Abies magnifica Cathy Crittenden 1970-7-9 39 Lassen 2 1/2 miles east of Antelope Mtn. lookout on road to Eagle Lake Resort. 1981 Comment
  CAS-BOT-BC330611  Acer glabrum var. glabrum John Thomas Howell; Gordon H. True 1973-8-1 50152 Lassen Sierra Nevada. Gold Run Creek road S of Susanville, Diamond Range 1584 Comment
  CHSC12493  Achillea millefolium Carol Weld 1969-6-20 20 Lassen Dean's Meadow. 1950 Comment
  CHSC30608  Achnatherum hymenoides R. C. Abbott 1975-6-17 3 Lassen 18.5 m w of road to Lassen Co youth camp, directly e of Eagle Lake Field Station. 1554 Comment
  UC1131573  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen near Johnstonville; Susanville Quadrangle Comment
  UC1609124  Achnatherum hymenoides Vernon H. Oswald and Lowell Ahart 1993-6-14 5544 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)); Eagle Lake 1566 Comment
  UCD50358  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  SEINET249775 Image available Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UC1137653  Achnatherum lemmonii George A. Fisher and Irwin H. Johnson F 198 Lassen Grass Valley Lassen National Forest 1696 Comment
  UCD50603  Achnatherum lemmonii John Thomas Howell 1976-7-19 51980 Lassen Transition Zone forest on Gold Run Creek southwest of Susanville. Lassen County. 1386 Comment
  UCD50700  Achnatherum lemmonii G. L. Stebbins Jr.; J. A. Jenkins 1937-7-11 2323 Lassen Black Mt. about mile below summit. Lassen County. 1950 Comment
  UCD50787  Achnatherum nelsonii R. Tofsrud 1947-7-1 221 Lassen 13 miles E of Madeline. Comment
  UCD50888  Achnatherum occidentale Beecher Crampton 1960-6-20 5733 Lassen 1/2 mile south Black's Mtn. Exper. Station, USDA Forest Service, 11 miles north Bogard Ranger Station, Lassen National Forest. 1706 Comment
  CAS-BOT-BC216444  Achnatherum occidentale subsp. californicum 1927-6-25 29 Lassen Unspecified 1706 Comment
  UCD51122  Achnatherum occidentale subsp. californicum L. R. Short; W. Gansberg 1936-6-2 S 366 Lassen Burgess Spring Experimental Range, Lassen National Forest. 1858 Comment
  UC1133069  Achnatherum occidentale subsp. occidentale K. E. Bradshaw 1939-5-27 231 Lassen Black Mt. Experimental Forest - Plot 39-1, s end Lassen National Forest, Halls Flat Quadrangle Comment
  UCD18961  Achnatherum occidentale subsp. pubescens Raymond D. Ratliff 1965-7-12 15 Lassen Lassen National Forest, Harvey Valley Allotment and Champ's Flat Allotment (HV 81-76 and CF 81-9). 1737 Comment
  UCD51216  Achnatherum occidentale subsp. pubescens R. Tofsrud 1947-7-1 222 Lassen 12 mi. E. of Madeline. Comment
  UCD51224  Achnatherum occidentale subsp. pubescens A. A. Beetle 1944-8-17 3040 Lassen 8 miles northeast of Susanville. Comment
  UCD51228  Achnatherum occidentale subsp. pubescens George A. Fischer; Irwin H. Johnson 1933-7-12 F 218 Lassen Lassen County. 1722 Comment
  UC1031349  Achnatherum thurberianum Leo Whitney 1935-6-18 3267 Lassen 13 mi w Eagle Lake; Lassen National Forest, Ashurst Mountain 1584 Comment
  UC584327  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2355 Lassen along highway from McArthur to Bieber; Big Valley Mt. 1100 Comment
  UC584332  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2226 Lassen 6 mi s Ravendale 1660 Comment
  CHSC99296  Acmispon denticulatus Lowell Ahart; John Dittes 2008-6-20 14970 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC117525  Acroptilon repens Lowell Ahart; John Dittes 2016-7-13 21103 Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC391609  Actaea rubra John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49411 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC9544  Agastache parvifolia L. E. Ray 1967-6-25 53 Lassen Coll. ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  JEPS126482  Agastache parvifolia Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -055 Lassen At Fredonyer Peak. Comment
  JEPS87414  Agastache parvifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5619 Lassen e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering Pine Creek); ne end of Little Harvey Valley, Pine Creek 1737 Comment
  SEINET10814664  Agastache parvifolia Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44. 1971 Comment
  UC1124436  Agastache parvifolia A. Simontacchi 1940-6-30 915 Lassen 8.6 mi w Burgess Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  POM70458  Agastache urticifolia Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC1037267  Ageratina occidentalis Leo Whitney 1933-8-27 1797 Lassen 14 mi w Eagle Lake (Harvey Lookout); Lassen National Forest, Harvey Valley 2225 Comment
  CAS-BOT-BC30235  Ageratina occidentalis Hans Leschke 1956-9-22 s.n. Lassen Near Sulphur Works entrance 2042 Comment
  CDA18260  Agoseris glauca G. D. Barbe 1974-8-2 1922 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS103193  Agoseris grandiflora G. Schoolcraft 2000-6-19 2904 Lassen West of Cold Spring Valley 1706 Comment
  RSA0009531  Agoseris grandiflora Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1136778  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  UCD32657  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCR152278  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  SEINET10964052  Agropyron trachycaulum R. Ondricek 1978-8-2 Ondricek 113 Lassen North edge of dam at Murrers Upper Meadow. T32N, R11E, E edge of Sec. 26, Fredonyer Peak Quadrangle, 15 ft. 1548 Comment
  HSC95196  Agrostis exarata Gordon Leppig, J. Cromwell 1997-7-27 628 Lassen Modoc National Forest, Blue Lake Ranch. 1970 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
  UC1100103  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen 4 mi n Madeline Comment
  UCD52115  Agrostis exarata R. Tofsrud 1947-7-1 240 Lassen Between Bieber and Nubieber. Comment
  SEINET4341020  Agrostis exarata G. Schoolcraft 1994-8-1 2382 Lassen About 2 miles west of Boot Lake 2256 Comment
  CAS-BOT-BC139678  Agrostis gigantea John Thomas Howell 1975-7-23 51401 Lassen Sierra Nevada. Susanville. 1295 Comment
  CAS-BOT-BC139680  Agrostis gigantea Clare B. Hardham 1969-8-28 17427 Lassen Sierra Nevada. West of Janesville. Comment
  CAS-BOT-BC139294  Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen Lassen Volcanic National Park. Snag Lake. Margin of gravel bars 100 yards above lake near south shore. 1850 Comment
  UC1567418  Agrostis pallens G. Schoolcraft 1989-7-18 1978 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  CHSC115828  Agrostis stolonifera Lowell Ahart; John Dittes 2015-7-14 20335 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
  CHSC29881  Agrostis stolonifera Robin L. Ondricek 1978-8-2 112 Lassen Below dam at Murrers Upper Meadow. 1548 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
  UC60211  Agrostis stolonifera J. Burtt Davy Jun 17 1897-Jun 24 1897 3307 Lassen Tule Confederacy Honey Lake Valley Comment
  CAS-BOT-BC138571  Agrostis variabilis John Thomas Howell; Gordon H. True 1973-8-1 50234 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. Headwaters of Baxter Creek. 2133 Comment
  UCD149882  Aliciella leptomeria Harry George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  UC978578  Alisma gramineum Verne Grant and Irving Schneider 1947-7-31 8204 Lassen irrigation ditch ne quarter George Williams section 19; Madeline Plain Comment
  CHSC113091  Alisma lanceolatum Lowell Ahart; John Dittes 2013-7-22 18841 Lassen West margin of a duck field, about 80 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC55670  Alisma plantago-aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3337 Lassen Susan River Honey Lake Valley 1219 Comment
  HSC2887  Alisma triviale R. G. Means 1962-7-5 73 Lassen 1 mi. SW of Bieber. 1250 Comment
  CHSC64855  Allium acuminatum Vernon H. Oswald 1995-6-26 6926 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  GMDRC7739  Allium acuminatum J. M. Andre, G. Clifton 1993-6-1 33419 Lassen Modoc Plateau: along US Hwy 395 approx 11 mi. SE of Ravendale, just north of Tule Patch Spring, east of Snowstorm Mtn 1588 Comment
  UC843269  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen e Fredonyer Pass (on Highway #36) 1645 Comment
  SEINET194965  Allium acuminatum A. A. Heller 1938-1 Lassen 0 Comment
  RSA487942  Allium atrorubens var. atrorubens A. Tiehm, J. Nachlinger 1988-6-2 11702 Lassen South side of Shaffer Mountain, 3.4 miles north of the Wendel road on Hwy 395 from Susanville to Alturas, west of the highway. 1387 Comment
  UCD55152  Allium bisceptrum Ellen Dean 2006-5-15 3040 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1245 Comment
  HSC30074  Allium campanulatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19268 Lassen Harvey Valley near Cone Springs Comment
  RSA125593  Allium lemmonii Peter H. Raven, Otto T. Solbrig 1958-6-17 13288 Lassen U. S. Highway 395, 1.8 miles south of Ravendale. Comment
  SEINET8122319  Allium lemmonii G. Schoolcraft 1993-1 2287 Lassen Clark Valley Road, ca 9.5 miles E of Madaline. 1829 Comment
  UC1229822  Allium lemmonii Gus Hormay 1961-6-15 Lassen experimental forest ot Patterson Flat Patterson Flat Comment
  UC1924588  Allium lemmonii Debra Valov 2006-5-29 2006018 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1271 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-BC470923  Allium lemmonii B. Bartholomew; B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC470925  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile west of Bieber Comment
  CAS-BOT-BC472753  Allium lemmonii Peter H. Raven; Otto T. Solbrig 1958-6-17 13288 Lassen Highway 395, 1.8 miles south of Ravendale Comment
  SEINET3885793  Allium lemmonii D. W. McNeal 1980-6-1 2338 Lassen Beside Highway #139, 32.4 miles South of the junction of Highway #299 in Adin.; 0 Comment
  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
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  CAS-BOT-BC138011  Alopecurus geniculatus John Thomas Howell 1934-7-7 12464 Lassen Near Feather Lake. Comment
  RSA125344  Alopecurus geniculatus P. H. Raven, Otto T. Solbrig 1958-6-17 13299 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  UC1130818  Alopecurus geniculatus A. Simontacchi 1940-6-15 876 Lassen 6.4 mi. w.-n.w. Cone Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UCD18957  Alopecurus geniculatus Raymond D. Ratliff 1965-7-22 20 Lassen Lassen National Forest, Harvey Valley Allot. (HV 78-73). 1706 Comment
  CHSC91330  Alopecurus pratensis Lowell Ahart; John Dittes 2005-6-1 11868 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  SEINET5340064  Alyssum desertorum M. J. Williams, A. Tiehm, J. Nachlinger 1988-6-2 88- 27 -4 Lassen Hwy 395, 0.4 mile E of Susanville road after turn to Alturas. Comment
  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
  CHSC5065  Amaranthus albus D. L. Stites 1967-7-1 143 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  CHSC29942  Amaranthus blitoides Robin L. Ondricek 1978-8-2 111 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  CHSC113078  Amaranthus californicus Lowell Ahart; John Dittes 2013-7-22 18860 Lassen Bottom of a dry bare drainage, 50 yards west of the road levee, about 250 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC66859  Amaranthus californicus Vernon H. Oswald; Lowell Ahart 1996-9-10 8277 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC71844  Amaranthus powellii Vernon Oswald; Lowell Ahart 1998-9-8 9570 Lassen Hwy 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  UCD143900  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen along State Highway 70 at Beckwourth Pass around 4.3 miles west of its junction with US Highway 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  SBBG14885  Amelanchier utahensis A. I. Richardson 1961-5-30 8 Lassen S of Eagle Lake 1402 Comment
  JEPS114629  Amsinckia menziesii var. menziesii Lowell Ahart, John Dittes 2008-6-22 15042 Lassen On the east side of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  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
  CHSC106685  Amsinckia tessellata B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC25304  Amsinckia tessellata Pauleen Broyles 1977-6-1 151 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  CHSC92825  Amsinckia tessellata var. tessellata Lowell Ahart; John Dittes 2005-6-1 11881 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  CHSC117217  Ancistrocarphus filagineus Lowell Ahart; John Dittes 2016-6-7 21000 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC66371  Ancistrocarphus filagineus Vernon H. Oswald; Lowell Ahart 1996-6-17 7797 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Just E of Devils Corral Trailhead. 1420 Comment
  CHSC71067  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9121 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  JEPS88514  Antennaria argentea Vernon H. Oswald and Lowell Ahart 1996-6-24 7837 Lassen Forest Rd. 31N63 ca. 0.2 mi s spur road to the cabins at Papoose Meadow (ca. 0.5 mi e of Eagle Lake Rd. (A1) and 2.5 mi s of Eagle Lake); Modoc Plateau 1644 Comment
  UC1125575  Antennaria argentea A. Simontacchi 1940-6-23 886 Lassen 3.2 mi sw Schoonamaker Lake; Halls Flat Quad. 1920 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
  CAS-BOT-BC26644  Antennaria argentea subsp. aberrans Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  SEINET6735052 Image available Antennaria corymbosa B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11496 Lassen Blue Door Flat, seven or eight miles east of HWY 295 on county road 510 1774 Comment
  CAS-BOT-BC59220  Antennaria dimorpha James Jokerst 1983-5-31 1792 Lassen Grasshopper Valley Quad. Near Madeline Plains 1583 Comment
  UC180151  Antennaria dimorpha unknown 1892-6-24 Lassen Honey Lake Comment
  CAS-BOT-BC69136  Antennaria geyeri John Thomas Howell 1934-7-8 12492 Lassen Spalding's, Eagle Lake Comment
  CHSC68841  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1997-7-24 8591 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  CHSC86973  Antennaria geyeri L. P. Janeway 2001-6-20 7206 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  JEPS100336  Antennaria geyeri Dean W. Taylor 2001-7-19 17842 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  CAS-BOT-BC69140  Antennaria geyeri Clarence R. Quick 1964-7-29 64 -89 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CAS-BOT-BC58690  Antennaria luzuloides Ralph K. Gierisch 1968-7-11 3344 Lassen Harvey Valley 1676 Comment
  JEPS107290  Antennaria luzuloides Lowell Ahart, John Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS22839  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen 4 mi e Westwood 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
  UC1523734  Antennaria luzuloides Gary Schoolcraft 1981-7-8 498 Lassen s of Coulthurst Flat 1920 Comment
  UC891618  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen about 3 mi s, on Highway #36 Westwood Comment
  CHSC60811  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1719 Comment
  CHSC89757  Antennaria luzuloides subsp. aberrans L. P. Janeway 2004-6-26 8168 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC68730  Antennaria luzuloides subsp. luzuloides Vernon H. Oswald; Lowell Ahart 1997-5-27 8506 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  JEPS33976  Antennaria rosea Brown and Wieslander 1922-7-23 58 Lassen Martin Sprs.; Eagle Lake Comment
  CHSC60714  Antennaria rosea subsp. rosea Vernon H. Oswald; Lowell Ahart 1993-6-14 5506 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. . 1728 Comment
  RSA125375  Anthoxanthum aristatum P. H. Raven, Otto T. Solbrig 1958-6-16 13228 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  CDA39744  Apocynum androsaemifolium Taylor 1938-7-18 s.n. Lassen Susanville. 0 Comment
  CHSC52772  Aquilegia formosa George Deniso 1978-7-11 65 Lassen ca. .75 km E of Gallatin Beach, S end of Eagle L. 1584 Comment
  HSC18051  Aquilegia formosa var. truncata Fred J. Kindel 1955-7-9 Lassen Susan River Comment
  UC773931  Arabis L. R. Short 1936-6-1 S- 354 Lassen Burgess Spring Experiment Range Lassen Forest 1859 Comment
  NY112495  Arabis holboellii var. pinetorum R. C. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake Comment
  JEPS28468  Arabis rectissima var. rectissima George W. Gillett 1957-9-4 1123 Lassen about 1/8 mi below Widow Lake (Widow Lake Trail); Lassen Volcanic National Park 2011 Comment
  NY119618  Arabis sparsiflora var. subvillosa R. C. Rollins 1983-7-5 83228 Lassen One mile north of Eagle Lake Comment
  SEINET5340852  Arabis sparsiflora var. subvillosa R. C. Rollins, K. W. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake. Comment
  SEINET2471253  Arceuthobium abietinum R. L. Mathiasen 2008-9-26 2008 -68 Lassen 16.5 km S. of N. entrance to Lassen Nat. Park on State Rte. 89 1940 Comment
  JEPS107301  Arceuthobium campylopodum Lowell Ahart, John Dittes 2005-6-1 11894 Lassen On the west side of Scott Road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.9 miles (air) northwest of Hallelujah Junction 1465 Comment
  POM339728  Arctostaphylos manzanita subsp. manzanita F. R. Fosberg 1969-8-16 51425 Lassen (California Registered Historical Landmark 678) 10 mi. west of Susanville. Comment
  CAS-BOT-BC45895  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak 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
  CAS-BOT-BC42166  Arctostaphylos patula subsp. patula Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16319 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood 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
  HSC7750  Arctostaphylos viscida R. J. Vernimen 1963-5-4 28 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
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Apr 29 2013
  SEINET10537551  Arenaria aculeata Mary Susan Taylor 1982-8-27 Taylor 5056 A Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  UC1125789  Arenaria congesta var. congesta A. Simontacchi 1940-6-12 847 Lassen 3.5 mi sse Blaks Mtn.; Lassen National Forest,Halls Flat Quadrangle Comment
  RSA38460  Arenaria congesta var. simulans P. A. Munz 1947-5-19 11876 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  UC1562793  Arenaria congesta var. subcongesta Barbara Ertter with Gary Schoolcraft 1987-6-16 7193 Lassen ne side Honey lake (saddle on E side of Hot Springs Peak.); Skeedaddle Mountains Comment
  UC852268  Arenaria congesta var. subcongesta A. A. Heller 1938-6-23 15198 Lassen e Fredonyer Pss 1645 Comment
  CHSC52769  Argemone munita subsp. rotundata L. P. Janeway 1990-7-4 3770 Lassen Dry gravelly bench near east-side of saddle 0.8 mi NE of Meadowview Peak. 1981 Comment
  CAS-BOT-BC401791  Argemone munita subsp. rotundata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. E. of Susanville Comment
  CDA24523  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
  RSA152609  Argemone munita subsp. rotundata I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. e of Susanville Comment
  UC72736  Argemone rotundata Milo S. Baker Lassen Milford Comment
  CHSC107316  Arnica chamissonis Lowell Ahart; John Dittes 2011-6-21 17534 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC59072  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1992-8-25 5192 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. 1851 Comment
  UC584281  Arnica chamissonis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-13 2343 Lassen Cleghorn Reservoir 1828 Comment
  CAS-BOT-BC82115  Arnica chamissonis Parkison 1916-7-21 36 Lassen Lassen Forest, Harvey Valley 1676 Comment
  CAS-BOT-BC82313  Arnica cordifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 Comment
  JEPS22841  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mi e Fredonyer Pass 1706 Comment
  POM253188  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mile east of Fredonyer Pass on hwy 36 1707 Comment
  UC726334  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mi e, on State Highway #36 Fredonyer Pass 1737 Comment
  UCD159572  Arnica cordifolia D. S. Park 2011-6-27 309 Lassen East of Westwood. Growing near Willard Creek. 1700 Comment
  CAS-BOT-BC82312  Arnica cordifolia H. D. Ripley; R. C. Barneby 1943-6-14 5725 Lassen Fredonyer Pass 1676 Comment
  OBI76962  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill along 30N21. Swain Mtn quad. T30N R8E sec 5 SW of SW 1918 Comment
  UC485811  Arnica dealbata H. E. and S. T. Parks June 1928 236 Lassen Drakesbad Lassen National Park Comment
  CHSC115054  Arnica fulgens J. Moeller; S. Puentes 2008-5-14 Lassen DFG OCC #13. Along 33N02 Harvey Valley Road off HW 44, ~5.8 air miles east of Poison Lake. 1735 Comment
  CAS-BOT-BC85030  Arnica sororia E. B. Babcock; G. L. Stebbins 1936-6-8 1788 Lassen Gentle north facing slope of hillside, 2 miles north of Madeline. 1371 Comment
  UCR18724  Arnica sororia Frank C. Vasek 1975-7-11 750711- 09 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  UCD129145  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  CDA10134  Artemisia abrotanum E. E. Fix 1964-11-4 Lassen From Soil Conservation Service Nevada. 0 Comment
  UCD129181  Artemisia arbuscula A. A. Beetle 1957-8-16 12802 Lassen between Susanville and Johnstonville. Comment
  CAS-BOT-BC85001  Artemisia arbuscula subsp. arbuscula R. K. Gierisch; D. H. Esplin 1969-8-27 3599 Lassen Lassen 1706 Comment
  RSA233757  Artemisia biennis R. F. Thorne, C. W. Tilforth 1969-9-6 39254 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 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
  UCR67442  Artemisia cana George K. Helmkamp 1990-9-23 A- 5 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  HSC68803  Artemisia cana subsp. bolanderi Gary Schoolcraft 1979-10-3 198 Lassen In Dry Valley 1/4 mi. west of Dry Valley Gap 1616 Comment
  SDSU6174  Artemisia cana subsp. bolanderi D. F. Howe 1966-8-25 4302 Lassen 41 miles south of Alturas on #395. 1676 Comment
  UC1119576  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 950 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC217077  Artemisia cana subsp. bolanderi H. M. Hall 1921-9-10 11673 Lassen Madeline Plains Comment
  UC1776711  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfield and Bass Hill Roads 1322 Comment
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Aug 12 2019
  CAS-BOT-BC93742  Artemisia ludoviciana subsp. incompta Louella Bass 1974-7-1 s.n. Lassen Sierra Nevada - Elysian Valley Comment
  UC1537358  Artemisia ludoviciana subsp. ludoviciana Gordon H. True 1937-7-10 783 Lassen Bull Flat Refuge 1Q, Bull Flat 1524 Comment
  SEINET7153235 Image available Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains e. of Ravendale. 1628 Comment
  SEINET263202  Artemisia nova J. Lyman 1994-4-23 4241 Lassen Along Highway 395, ca. 25 miles north of Susanville on grade up to BLM land 1433 Comment
  CAS-BOT-BC97200  Artemisia spinescens Elmer I. Applegate 1934-5-4 8934 Lassen 20 miles south of Ravendale, Secret Valley Comment
  CDA10174  Artemisia spinescens Robin Breckenridge 2007-5-1 PDR# 1349824 E Lassen Wendel. 0 Comment
  UCD55270  Artemisia spinescens Ellen Dean 2006-5-15 3080 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  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
  CHSC110309  Artemisia tridentata subsp. tridentata L. P. Janeway; B. Castro 2012-7-2 10927 Lassen Modoc Plateau. Eastern end of Amedee Mountains; along Ske-daddle Ranch Road (#26020) at the road to South Fork Reservoir, 6.1 road km north of the Wendel Road. 1473 Comment
  UC762002  Artemisia tridentata subsp. tridentata R. F. Hoover 1940-9-28 4639 Lassen Leavitt Comment
  CAS-BOT-BC99281  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  SEINET10580351  Asclepias cordifolia Alice Eastwood, John Thomas Howell 1940-6-11 Eastwood 7995 Lassen Nubieber Comment
  JEPS127355  Asclepias fascicularis Lowell Ahart, John Dittes 2016-7-13 21150 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC6223  Asclepias speciosa M. West 1946-7-7 Lassen Eagle Lake 1584 Comment
  CAS-BOT-BC478834  Asparagus officinalis John Thomas Howell 1975-7-23 51397 Lassen Susanville, Sierra Nevada 1295 Comment
  RSA252999  Aster alpigenus A. A. Heller 1937-9-1 15343 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  POM39868  Aster campestris Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC66717  Aster elatus Vernon H. Oswald; Lowell Ahart 1996-8-1 8120 A Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  UCR67471  Aster foliaceus George K. Helmkamp 1990-9-23 G- 12 Lassen north of Ravendale 1677 Comment
  RSA503251  Aster integrifolius Bruce Bartholomew, B. Anderson 1988-7-22 4502 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  CHSC69211  Astragalus James D. Jokerst 1991-5-28 3299 Lassen Modoc Plateau. Junction Hwy. 395 with Hwy. 36 SE of Susanville, E side of road 150 ft S of junction. 1280 Comment
  POM45145  Astragalus accidens var. hendersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  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
  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
  POM45143  Astragalus andersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CHSC63394  Astragalus anxius V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6351 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  SEINET10544285 Image available Astragalus anxius R. J. Meinke 1991-7-16 Meinke 6108 Lassen Ash Valley, ca. 25 km W of Madeline, along Ash Valley Rd.; on boundary of T38N, R11E, Sect. 32 and T37N, R11E, Sec. 5. In loose, gravelly ash thinly overlying volcanic bedrock. 1550 Comment
  SEINET8358141  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley ca 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  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
  CHSC63396  Astragalus canadensis var. brevidens Vernon H. Oswald 1994-7-8 6368 Lassen Wildlife Viewing Area along Hwy. 139 on the NE shore of Eagle Lake, 5.9 mi S of County Rd. 201 (A1). 1557 Comment
  UCD104693  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  JEPS54557  Astragalus curvicarpus var. curvicarpus T. Brandegee 1892-6-23 Lassen Honey Lake Comment
  NY803538  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch 1280 Comment
  UC1128891  Astragalus curvicarpus var. curvicarpus A. Simontacchi 1940-6-8 840 Lassen 1.9 mi ne Ebey Lake; Halls Flat Quad., Lassen National Forest, ne of Ebey 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
  SEINET12165120  Astragalus curvicarpus var. curvicarpus N. H. Holmgren, Holmgren, P. K. 1980-1 9504 Lassen Observation Peak, S side of Mt, 11 mi airline distance E of Ravendale, T34N R16W S34 1890 Comment
  CHSC37537  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  CHSC7675  Astragalus filipes Beverley J. Wise 1969-5-3 52 Lassen 4.8 mi. east of Hwy 395 on Las. Co. Rd 338 (Smoke Creek road). 1615 Comment
  JEPS117260  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  RSA768028  Astragalus filipes L. Ahart, John Dittes 2010-7-31 16976 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  CAS-BOT-BC182953  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo 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
  CAS-BOT-BC182956  Astragalus filipes Alice Eastwood; John Thomas Howell 1940-6-16 8353 Lassen Constantia Comment
  CHSC77209  Astragalus geyeri var. geyeri G. Schoolcraft 1997-6-3 2593 Lassen Flats n. of Fort Sage Mtns. 1219 Comment
  UCR244051  Astragalus geyeri var. geyeri Jim Andre 1993-6-1 19721 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC186858  Astragalus gibbsii Louella Bass 1973-6-3 96 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC186860  Astragalus gibbsii John Thomas Howell 1974-7-8 50462 Lassen Susanville 1295 Comment
  POM26155  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  NY674270  Astragalus gibbsii K. Morris 1973-5-25 214 Lassen 4 miles south of Susanville, on US 36 Comment
  SD43503  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford, dry silty flats 1260 Comment
  POM24454  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA111019  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 5740 Lassen 3 miles west of Susanville. Comment
  CAS-BOT-BC187154  Astragalus lentiginosus var. chartaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49230 Lassen On Highway 395, 7 miles southeast of Milford 1280 Comment
  RSA109609  Astragalus lentiginosus var. chartaceus H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen West of Susanville 1311 Comment
  NY675574  Astragalus lentiginosus var. floribundus N. H. Holmgren 1980-7-5 9520 Lassen Upper Smoke Creek drainage, 20.4 km (12.7 miles) from U. S. Highway 395 via Rye Patch Canyon, 24 km (15 miles) airline distance southeast of Ravendale 1580 Comment
  RSA0058877  Astragalus lentiginosus var. floribundus L. P. Janeway, B. Castro 2012-7-2 10929 Lassen Modoc Plateau. East side of the Skedaddle Mountains; along Skedaddle Road 19.6 road km north of the Wendel Road; about 1.0 km south of Skedaddle Creek; at the Nevada State line. 1542 Comment
  SEINET5325521  Astragalus lentiginosus var. floribundus A. Tiehm 1980-1 5751 Lassen North end of Honey Lake Valley, 1 mile orth of Wendel. 1231 Comment
  CHSC828  Astragalus lentiginosus var. lentiginosus 1944-6-26 Lassen Eagle Lake. 1584 Comment
  CHSC99508  Astragalus lentiginosus var. lentiginosus Lowell Ahart; John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber. 1268 Comment
  CDA26707  Astragalus malacus T. C. Fuller 1963-6-11 10659 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC106669  Astragalus malacus B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UCD55300  Astragalus malacus Ellen Dean; Gary Schoolcraft 2006-5-16 3121 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  UC570045  Astragalus pulsiferae E. Sawyer 1935-6-27 237 Lassen Long Valley Sierraville Quad., Long Valley 1310 Comment
  RSA111760  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 Comment
  SD71380  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen The Sierra Nevada, Sagebrush flat, east side of Beckwourth Pass 1493 Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  JEPS127726  Astragalus purshii var. purshii H. Chappel, K. Moran & K. Strassman 2002-6-27 ALT- 013 Lassen Pit River Valley/Beaver Creek BLM land Comment
  RSA121821  Astragalus purshii var. purshii L. R. Short, J. Warren 1936-6-11 S- 402 Lassen Burgess Spring, Exp Range. 1790 Comment
  CAS-BOT-BC194095  Astragalus purshii var. purshii Clare B. Hardham 1978-4-20 21588 Lassen North west edge of Susanville Comment
  CAS-BOT-BC194096  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8345 Lassen Jonesville Comment
  JEPS114761  Astragalus purshii var. tinctus Lowell Ahart, John Dittes 2008-6-19 14888 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC1128895  Astragalus purshii var. tinctus A. Simontacchi 1940-5-9 694 Lassen 4.5 mi sse of B.M. 7310 on Black Mtn; Halls Flat Quad., Lassen National Forest, Black Mtn Comment
  CAS-BOT-BC192974  Astragalus purshii var. tinctus Doris Kildale Gillespie 1930-5-15 9386 Lassen 5 miles west of Susanville Comment
  UC82594  Astragalus whitneyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  RSA26502  Astragalus whitneyi Marcus E. Jones 1897-6-30 s.n Lassen Susanville; 7 miles below Eagle Lake. 1524 Comment
  JEPS90987  Astragalus whitneyi var. confusus Dean Wm. Taylor with Glenn Clifton 1990-6-12 10887 Lassen along creek at crossing of Road 527 (Forest Road 39N08); Modoc Plateau, Ash Valley, Ash Creek 1554 Comment
  CAS-BOT-BC200869  Astragalus whitneyi var. confusus D. B. Dunn; B. J. Cox 1971-6-2 17770 Lassen Approx. 12 mi. S. of Adin on Calif. Hwy. 139 1371 Comment
  CAS-BOT-BC200873  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-BC200875  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 7 miles below Eagle Lake 1524 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
  CHSC5284  Astragalus whitneyi var. siskiyouensis V. Holt 1945-6-1 Lassen Eagle Lake. Comment
  SEINET3025898  Astragalus whitneyi var. sonneanus Marcus E. Jones 1897-6-28 Lassen Top of Diamond Peak, Susanville. Perkin's Ranch. 2230 Comment
  CHSC71080  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1998-5-22 9130 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Along a streamlet. 1463 Comment
  CAS-BOT-BC17439  Athysanus pusillus George Haley 1927-4-15 s.n. Lassen Constantia. Comment
  CHSC109992  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  CAS-BOT-BC172657  Atriplex gardneri var. falcata Gary Schoolcraft 1983-6-20 1012 Lassen Mud Flat 1341 Comment
  POM102968  Atriplex gardneri var. falcata Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET515856  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 Comment
  JEPS94838  Atriplex gmelinii var. gmelinii Vernon H. Oswald and Lowell Ahart 1998-9-8 9581 Lassen 2.2 mi n of Bieber (on County Road 91 (Bieber-Lookout Road)); Ash Creek and Big Swamp, County Road 91 1258 Comment
  CHSC63701  Atriplex heterosperma Vernon H. Oswald 1994-9-6 6467 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. 1490 Comment
  CHSC76274  Atriplex triangularis Lowell Ahart; Vernon Oswald 1999-9-13 8209 Lassen On the edge of a flooded field just south of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  CAS-BOT-BC106488  Balsamorhiza hookeri David D. Keck; J. Clausen 1935-6-24 3747 Lassen 2 mi. S. of Ravendale, in light sandy clay soil with some rock. 1463 Comment
  UC1794994  Balsamorhiza hookeri R. K. Brummitt 1998-5-17 19897 Lassen 12 km W of Susanville, E foot of Fredonyer Pass 1400 Comment
  OBI48169  Balsamorhiza hookeri Rhonda Riggins 1989-4-27 1635 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  SEINET10924971  Balsamorhiza hookeri Billy Joe Cox 1971-6-2 Cox 3265 Lassen Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  UCD129528  Balsamorhiza macrolepis Tom Vestal DVM 2002-5-23 s.n. Lassen south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir. Comment
  CHSC7644  Balsamorhiza sagittata Beverley J. Wise 1969-5-20 32 Lassen West city limits of Susanville on Hwy 36. 1341 Comment
  CAS-BOT-BC16436  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49177 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  CHSC63703  Bassia hyssopifolia Vernon H. Oswald 1994-9-6 6469 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. Common in the parking lot and along the levee road on the N side of the creek. 1490 Comment
  CHSC99983  Bassia hyssopifolia L. P. Janeway 2008-8-2 9525 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  CHSC63727  Beckmannia syzigachne Vernon H. Oswald 1994-9-6 6471 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. 1490 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
  UC1100216  Beckmannia syzigachne Herbert L. Mason 1947-7-9 13299 Lassen 5 mi e Bieber Comment
  UC790979  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen lower slopes of peak 6 mi s Ravendale; Observation Peak Comment
  CHSC110167  Berberis aquifolium var. aquifolium V. Lockie 2010-5-1 Lassen Location: Just off of Highway 139, east side of road, approx. 8.25 miles NE of Susanville, CA on Antelope Mountain. 1630 Comment
  CAS-BOT-BC76025  Berberis repens Parkison 1916-6-17 13 Lassen Lassen Forest. North slope Crater Mountain. 1706 Comment
  UC1790750  Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road mi W of Hwy 395 on Hwy 70, then 5.5 road mi N on Scott Road 1493 Comment
  CHSC29876  Berula erecta Robin L. Ondericek 1978-8-8 119 Lassen In water above the dam at Murrers Upper Meadow. 1548 Comment
  CAS-BOT-BC169399  Betula glandulosa M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  UC1594641  Betula glandulosa Vernon H. Oswald and Lowell Ahart 1992-7-16 5116 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  HSC95769  Bidens cernua Gordon Leppig, J. Cromwell 1997-7-27 616 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC65292  Bidens cernua var. cernua Vernon H. Oswald 1995-8-21 7205 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. 1859 Comment
  CAS-BOT-BC413000  Bistorta bistortoides A. M. Vollmer; L. Beane 1953-7-1 65 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC5031  Bistorta bistortoides L. B. Barlow 1967-7-14 121 Lassen Along Susan River, W. side Calif. State Highway 44. 5 mi. S. Silver Lake Rd. 1828 Comment
  CHSC60760  Bistorta bistortoides Vernon H. Oswald; Lowell Ahart 1993-6-3 5484 Lassen Champs Flat Rd. (Lassen 105), Forest 32N28Y), 2.4 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  SBBG29153  Bistorta bistortoides A. A. Heller 1938-6-23 15141 Lassen 2 mi E of Westwood Comment
  SEINET4176271  Bistorta bistortoides C. G. Gulling 1905-1 1548 Lassen Big Meadows Comment
  HSC22872  Bistorta bistortoides John Pratt 1970-6-13 8 Lassen 1677 Comment
  CHSC4779  Blepharipappus scaber R. Carter 1967-6-27 555 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology station. 1584 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
  POM223583  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3733 Lassen 2 miles south of Ravendale. 1463 Comment
  SEINET9331153  Blepharipappus scaber Unknown 1974-8-20 1932 Lassen Survey w/ state and county personnel, Hallelujah Jct, NW corner of jct of US hwy 495 and hwy 70. USGS Quad: 15' Plant Systematics Lab/Herbarium CDA, California Dept. of Food & Agric Comment
  UC577298  Blepharipappus scaber David D. Keck and J. Clausen 1935-6-24 3725 Lassen 5 mi s of (in Modoc Co.) Likely 1402 Comment
  UC604683  Blepharipappus scaber Farris Farris 1935-5-20 Lassen Susanville 1341 Comment
  CAS-BOT-BC128038  Blepharipappus scaber C. L. Hitchcock 1940-5-26 6612 Lassen lava beds ca. 12 miles north of Fall River Mills on Fall River 1371 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
  JEPS53205  Boechera Leland S. Smith 1918-5-11 924 Lassen Hayden Hill Modoc Forest Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  UC1542747  Boechera pendulocarpa Barbara Ertter with Gary Schoolcraft 1987-6-16 7179 Lassen ca 1 mi w Hot Springs VABM (ne side of Honey Lake); Skeedaddle Mountains 1828 Comment
  CHSC7708  Boechera puberula Beverley J. Wise 1969-4-29 35 Lassen 3.5 mi. north of Susanville on Rnd Valley Rd. off Hwy 139. 1341 Comment
  CAS-BOT-BC14514  Boechera puberula H. D. Ripley; R. C. Barneby 1944-3-30 5890 Lassen North of Madeline. 1706 Comment
  CHSC101020  Boechera retrofracta John Dittes 2008-5-22 1533 Lassen Modoc Plateau; ca 15.4 air miles southeast of Adin, ca. 3.6 air miles east of Hayden Hill, ca. 0.2 mile southeast of intersection of Hwy 139 and FS Road 36N02; edge of wooded volcanic toe-slope on northeast side of Willow Creek. 484 Comment
  RSA0090999  Boechera retrofracta Dean Wm. Taylor 2009-5-21 20602 Lassen Susanville; Susanville Peak, easterly flank along logging road trending northward from Susanville Indian Rancheria. 1600 Comment
  UC1143032  Boechera retrofracta L. R. Short 1936-6-1 S- 354 Lassen Burgess Spring Experimental Range Lassen National Forest 1859 Comment
  UC1609108  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1993-6-14 5512 Lassen ca 4 mi (air) w Eagle Lake (Lassen A1 (Eagle Lake Rd), 1.0 mi n of its jct with Lassen A21 (32N02), on the w edge of Brockman Flat Lava Beds); Brockman Flat Lava Beds 1810 Comment
  CHSC68746  Boechera sparsiflora Vernon H. Oswald; Lowell Ahart 1997-5-27 8512 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 1.4 mi east of Hwy. 139. Roadside. 1645 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
  JEPS111475  Boechera sparsiflora B. A. Roy, J. W. Kirchner 1996-5-11 Lassen At intersection of Yellow Pine and Pine Needle. Drives up Jaynesville Grade, near Jaynesville (off highway 395 about 1 mile). Comment
  RSA0011460  Boisduvalia macrantha Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46980 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  SD8418  Boykinia major Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CHSC92737  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CHSC27122  Bromus briziformis Robert A. Schlising 1978-6-28 3295 Lassen E of Eagle Lake at Lower Dry Lake. 1645 Comment
  UCD32673  Bromus briziformis Beecher Crampton 1954-7-6 2077 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  CAS-BOT-BC149585  Bromus carinatus var. carinatus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch. 1463 Comment
  UCD59217  Bromus carinatus var. marginatus L. Whitney 1935-6-19 3262 a Lassen Fruit Grower's Supply Company, Lassen National Forest. Comment
  POM364020  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  RSA127004  Bromus commutatus H. S. Yates 1936-8-11 6074 Lassen Bexter Creek [Baxter? creek]. Susanville. 1280 Comment
  UCD58445  Bromus commutatus R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. Comment
  UCD58839  Bromus inermis M. C. Collins 1926-6-14 s.n. Lassen Susanville. Comment
  CHSC5253  Bromus inermis subsp. inermis P. Balch 1955-7-23 Lassen Stafford's Eagle Lake Resort. 1569 Comment
  UC70688  Bromus inermis subsp. inermis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley 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
  UC1024947  Bromus madritensis subsp. rubens Leo Whitney 1935-6-21 3322 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UC1037147  Bromus marginatus Leo Whitney 1935-7-6 3429 Lassen near Pit River (Lassen National Park); Lassen National Park Comment
  UC1037142  Bromus orcuttianus Leo Whitney 1935-6-25 3338 Lassen Ashurst Mountain Comment
  UC53747  Bromus secalinus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley 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
  CHSC7696  Bromus tectorum Beverley J. Wise 1969-4-28 127 Lassen North city limits of Milford (Hwy 395). 1310 Comment
  UC1024960  Bromus tectorum Leo Whitney 1935-6-24 3301 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UCD59855  Bromus tectorum A. A. Beetle 1941-6-28 2796 Lassen 10 miles W of Chester, rte 36. Comment
  SEINET10515052  Bromus tectorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 522 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  RSA0000410  Calamagrostis micrantha var. sierrae Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC185001  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles west of Chester. Comment
  JEPS114632  Calandrinia ciliata Lowell Ahart, John Dittes 2008-6-22 15030 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  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
  CAS-BOT-BC332740  Callitriche verna R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  CAS-BOT-BC80347  Calocedrus decurrens Ralph K. Gierisch 1968-7-12 3357 Lassen Lassen Forest, Hwy 36 1 mile east of Fredonyer Pass 1706 Comment
  UCD132943  Calocedrus decurrens T. E. Weier; Katrina Weier 1946-9-1 s.n. Lassen Lassen National Park. Comment
  UC1537209  Calochortus leichtlinii Gordon H. True Jr. 1936-6-25 533 Lassen n side Hog Flat Reservoir 1524 Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  POM109563  Calochortus leichtlinii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  CAS-BOT-BC483439  Calochortus macrocarpus David D. Keck 1944-7-8 5452 Lassen 1.5 miles west of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  HSC22969  Calochortus macrocarpus var. macrocarpus John Pratt 1970-6-4 62 Lassen Susanville Comment
  CHSC67062  Calyptridium umbellatum Willis Ball 1969-6-20 16 Lassen Found beside road on Dean's Ridge. 1950 Comment
  SEINET3992160  Camassia quamash A. A. Heller 1938-5-4 15140 Lassen 2 mi E of Westwood; Transition Life Zone 1494 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
  OBI76938  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along hwy 395 ca. 6.6 mi S of Karlo Rd quad 1220 Comment
  NY850975  Camissonia boothii subsp. alyssoides Mrs. C. C. Bruce 06 1898 2139 Lassen Shumway Comment
  RSA294814  Camissonia boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  SEINET3282784 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  SEINET3282785 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  HSC63958  Camissonia claviformis subsp. cruciformis Teresa Prendusi 1980-5-6 Lassen Honey Lake area Comment
  RSA136892  Camissonia claviformis subsp. cruciformis Peter H. Raven, Otto T. Solbrig 1958-6-17 s.n. Lassen Along Hwy 395, 19.0 miles south of Ravendale Comment
  NY851232  Camissonia claviformis var. cruciformis A. A. Heller 1938-6-23 15211 Lassen U.S. Highway #395, about midway between Mapes and Secret Valley 1372 Comment
  HSC68913  Camissonia minor Gary Schoolcraft 1980-6-11 265 Lassen W of Wendel 1220 Comment
  NY851536  Camissonia minor A. Tiehm 1980-5-29 5752 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  JEPS107466  Camissonia parvula Lowell Ahart, John Dittes 2005-6-1 11852 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
  JEPS107854  Camissonia parvula Lowell Ahart, John Dittes 2005-6-2 11938 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  RSA144901  Camissonia tanacetifolia G. I. Stage, R. Thorp 1959-6-21 59 -117 Lassen 5.1 miles north of Termo Comment
  CAS-BOT-BC160877  Camissonia tanacetifolia subsp. tanacetifolia R. K. Gierisch; D. H. Esplin 1969-7-18 3550 Lassen Near Modoc National Forest. Madeline Plains Comment
  JEPS121275  Camissonia tanacetifolia subsp. tanacetifolia Lowell Ahart, John Dittes 2013-7-22 18885 Lassen Man-made pond, about 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD114153  Capsella bursa-pastoris L. R. Short; J. Warren 1936-6-9 S- 408 Lassen Burgess Spring Experimental Range; around old sheep bed-grounds. 1844 Comment
  CAS-BOT-BC37243  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49213 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  NY119877  Cardamine breweri R. C. Rollins 1981-5-30 81168 Lassen Gold Run Road, toward Ski Line Drive, 10 miles S of Susanville Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  RSA592547  Cardamine breweri var. breweri S. O. Mattoon 1978-7-10 24 Lassen Lassen County, Blue Lake Camp Ground: 17 miles E of Likely, Southern Warner Mtns, Modoc N Fork. 1890 Comment
  JEPS120845  Cardamine pensylvanica Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18729 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1924259  Cardaria chalepensis Debra Valov 2004-5-31 2004228 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD163081  Carex Jack Major 1966-6-24 Lassen Modoc National Forest. Long Valley. 3 airline miles southwest of Patterson Guard Station. (Exact location unknown. Coordinates estimated by label maker.) 1981 Comment
  CAS-BOT-BC17909  Carex angustata Leo Whitney 1934-7-31 1972 Lassen Bridge Creek Camp. 1737 Comment
  UC1537643  Carex athrostachya Gordon H. True Jr. 1939-6-15 994 Lassen Bullard Lake, W of Grasshopper Valley Comment
  UC2031877  Carex athrostachya Nick Otting and Dick Brainerd 2003-7-17 702 Lassen Cascade Mountains, Susan River, 2 air miles west of Susanville. Comment
  CHSC114422  Carex davyi Don Lepley 2012-7-26 Lassen On the south flank of Whaleback Mt., about 3.5 air miles north-northwest of Christie Campground at Eagle Lake and about 500 feet from Road 32N02. UTM coordinates: 10T 68j0730 E x 4498190 N 1767 Comment
  POM80803  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  HSC82188  Carex douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6037 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC506939  Carex douglasii George A. Fischer, Irwin H. Johnson 1933-7-12 F 234 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  UC803  Carex douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3289 Lassen Honey Lake Valley Comment
  CAS-BOT-BC19776  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Plumas National Forest. Milford Ranger District. East side of saddle, ca. 0.8 mile northeast of Meadowview Peak. 1981 Comment
  SEINET7557452 Image available Carex douglasii John Thomas Howell 1934-7-6 12450 Lassen Harvey Valley. Comment
  SEINET7485202 Image available Carex filifolia Barbara L. Wilson, Danna Lytjen and Nick Otting 2005-1 11451 Lassen northeast part of Round Corral Reservoir, north of Buckhorn Road about a mile and a half west of Pyramid Lake 1876 Comment
  UC1609197  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  CAS-BOT-BC20164  Carex filifolia var. erostrata Lassen 1927 G. S. Crew 1927-7-15 60 Lassen Lassen Forest. 1691 Comment
  CAS-BOT-BC22275  Carex hassei John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49477 Lassen Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC22237  Carex haydeniana John Thomas Howell 1934-6-14 12163 Lassen Near Lost Lake. Warner Mountains. 2438 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
  CAS-BOT-BC28194  Carex hoodii George Wilson Gillett 1957-7-29 946 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  JEPS28381  Carex hoodii George W. Gillett 1957-7-29 946 Lassen along trail between Snag Lake and Butte Lake; Lassen Volcanic National Park 1859 Comment
  CHSC115041  Carex inops subsp. inops Stephanie Puentes 2011-7-7 09419 Lassen Big Foot THP. In the Big Valley Mountains, west of Big Valley. About 5 air miles SW of Lookout and 6 air miles NW of Bieber. 1447 Comment
  CHSC85976  Carex integra L. P. Janeway 2003-7-24 7916 Lassen 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
  CAS-BOT-BC35780  Carex jonesii J. T. Howell 1934-6-14 12165 Lassen Warner Mts.; near Lost Lake 2438 Comment
  CHSC85008  Carex lenticularis var. lipocarpa L. P. Janeway; B. Castro 2003-10-5 8004 Lassen High Cascade Range. Western edge of Triangle Lake; Caribou Wilderness Area. 2153 Comment
  HSC103673  Carex lenticularis var. lipocarpa Thomas W. Nelson, Jane Nelson 1985-8-10 8023 Lassen Margin of pond along south side of lava flow on west side of Silver Lake 1829 Comment
  CAS-BOT-BC31439  Carex leporinella Hans Leschke 1945-9-15 s.n. Lassen Near Twin Lakes, Mt. Lassen Comment
  HSC95192  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC31697  Carex mariposana John Thomas Howell; Gordon H. True 1973-7-31 50045 Lassen On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  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
  UC1583950  Carex multicaulis G. Schoolcraft 1990-5-15 2049 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  HSC48180  Carex multicostata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19240 Lassen 2 mi. N of Westwood Comment
  CAS-BOT-BC119737  Carex nebrascensis George Wilson Gillett 1957-7-22 881 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. 1850 Comment
  CHSC110970  Carex nebrascensis Lowell Ahart; John Dittes 2012-7-9 18298 Lassen Scattered along a small drainage, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northest of Bieber, Big Valley. 1267 Comment
  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
  JEPS28385  Carex pellita George W. Gillett 1957-7-26 906 Lassen e shore Butte Lake 200 yards beyond outlet; Lassen Volcanic National Park, Butte Lake 1844 Comment
  SEINET13407108  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek 1768 Comment
  CAS-BOT-BC118401  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen Dry drainageway of Rush Creek, N of Smoke Creek Ranch Road, 2 km W of the stateline, Comment
  CHSC108016  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
  JEPS107834  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 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 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  CAS-BOT-BC118029  Carex rossii John Thomas Howell; Gordon H. True 1959-9-23 s.n. Lassen N end of Juniper Lake, Lassen Park. 2057 Comment
  JEPS118165  Carex rossii Dean W. Taylor 2009-5-20 20604 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  CAS-BOT-BC117702  Carex simulata Peter H. Raven; Otto Thomas Solbrig 1958-6-17 13278 Lassen Near a spring, along US HWY 395, 13.1 mi S of Ravendale. Comment
  CAS-BOT-BC117017  Carex straminiformis John Thomas Howell; Gordon H. True 1973-8-1 50200 Lassen Ca 3 mi SE of Diamond Mt. East slope of Diamond Range, south of Susanville. Comment
  UC1142962  Carex straminiformis A. L. Hormay 1941-6-19 25 Lassen Squaw Valley Lassen National Forest 1737 Comment
  UCD140896  Carex straminiformis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CAS-BOT-BC115970  Carex subfusca Peter H. Raven; Otto Thomas Solbrig 1958-6-16 13253 Lassen 4.5 mi E of Westwood on St Hwy 36. Comment
  CAS-BOT-BC116615  Carex subfusca Hans Leschke 1960-8-8 1738 Lassen Below trail Ski Hut-Crumbaugh Lake. 1981 Comment
  CAS-BOT-BC116620  Carex subfusca George Wilson Gillett 1957-7-26 911 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CHSC77246  Carex subfusca G. Schoolcraft 1998-7-7 2754 Lassen Along Pine Creek NE of Fredonyer Peak. 1645 Comment
  SEINET4292053 Image available Carex subfusca Unknown 2004-1 8169 Lassen High Cascade Range, along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. Comment
  UC2031888  Carex subfusca Nick Otting and Bruce Newhouse 2003-7-15 680 Lassen Sierra Nevada Mountains, Diamond Mountain, 1700 feet southeast of summit, 8 air miles south-southwest of Susanville. Comment
  CAS-BOT-BC116611  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  CAS-BOT-BC116613  Carex subfusca Hans Leschke 1958-8-17 1568 Lassen Reflexion Lake 1792 Comment
  CAS-BOT-BC116616  Carex subfusca B. Clear 1938-7-13 s.n. Lassen Dersch Meadows, Lassen Park. 2016 Comment
  CHSC76792  Carex utriculata L. P. Janeway 1999-9-5 6580 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  CAS-BOT-BC115282  Carex utriculata W. B. Cooke; V. G. Cooke 1976-10-7 53193 Lassen Butte Lake, Near lake shore, Lassen Volcanic National Park. Comment
  JEPS103197  Carex vallicola B. Corbin 2001-5-30 1002 Lassen S of Harter Flat, along jeep road 1 mi S of Nelson Corral Res. 1868 Comment
  JEPS28341  Carex vesicaria George W. Gillett 1957-7-22 879 Lassen along south shore Snag Lake Lassen Volcanic National Park, Snag Lake 1850 Comment
  CAS-BOT-BC114880  Carex whitneyi John Thomas Howell; Gordon H. True 1973-8-1 50201 Lassen Ca 3 mi SE of Diamond Mt. E slope of Diamond Range S of Susanville. 2194 Comment
  HSC48179  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen 2 mi. N of Westwood Comment
  CAS-BOT-BC114878  Carex whitneyi J. Stebbins 1974-7-18 s.n. Lassen Roop Mountain. 2133 Comment
  CAS-BOT-BC248970  Castilleja Philip A. Munz 1947-5-19 11866 Lassen 27.7 miles south of Ravendale, on Highway 395 1310 Comment
  CHSC14085  Castilleja angustifolia K R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5841 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  JEPS23795  Castilleja angustifolia Rimo Bacigalupi with Lincoln Constance 1959-7-16 7140 Lassen 0.25 mi s U.S. Hwy. 395 junction with road Smoke Creek (beside U.S. Hwy 395) 1341 Comment
  JEPS25553  Castilleja angustifolia Wayne Roderick 1961-4-29 Lassen 29.3 mi s Ravendale (just off U.S. Highway 395, close to junction with Smoke Creek Road) 1341 Comment
  UC1368787  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen about 6 mi n Honey Lake 1280 Comment
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  HSC31355  Castilleja applegatei D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19187 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC249618  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-20 44 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  JEPS17616  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with G. T. Robbins 1955-7-20 5411 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley); Warner Mountains, Modoc National Forest, Long Valley Meadow 2057 Comment
  UC1063043  Castilleja applegatei subsp. pinetorum A. Simontacchi 1940-5-16 728 Lassen 2.3 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1752 Comment
  CHSC68874  Castilleja arachnoidea Vernon Oswald; Lowell Ahart 1997-6-24 8642 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  SBBG7046  Castilleja campestris H. and M. Dearing 1939-6-6 3565 Lassen marsh on Pitt River, 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
  RSA46749  Castilleja linariifolia J. T. Howell 1934-6-10 11885 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  CAS-BOT-BC244890  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen Foot of Lassen Butte Comment
  RSA46750  Castilleja miniata J. T. Howell 1934-6-10 11871 Lassen Janesville Comment
  CAS-BOT-BC241002  Castilleja pilosa Doughitt; Parkison 1916-6-8 4 Lassen Lassen National Forest. Harvey Valley 1676 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
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SBBG7071  Castilleja pilosa H. and M. Dearing 1939-6-6 3566 Lassen Pitt River, near Bieber Comment
  UC1483790  Castilleja pilosa Mary Meyer 1980-7-1 Lassen Champs Flat 1677 Comment
  CHSC112415  Castilleja tenuis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18773 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC66263  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1996-6-24 7841 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC99526  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-20 14944 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
  JEPS96025  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1996-6-24 7841 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  SJSU11528  Castilleja tenuis J. W. Tilden 1960-6-27 1514 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  SEINET5341299  Caulanthus pilosus F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. 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
  UC1553382  Ceanothus cordulatus G. Schoolcraft 1988-7-11 1823 Lassen ca 5 mi n Hwy 36 (along Hwy 44) 1676 Comment
  CAS-BOT-BC52049  Ceanothus prostratus Barbara Shervanick 1974-5-7 1273 Lassen About 2 miles North of Milford on Highway 395, 1 mile Southwest of Honey Lake 1219 Comment
  CHSC4984  Ceanothus prostratus R. Clicquennoi 1967-7-4 5 Lassen 5 mi s of Eagle Lake Biology Station on Gallatin Beach Rd. Comment
  CHSC5069  Ceanothus prostratus D. L. Stites 1967-7-1 111 Lassen On Black Mt. 5 mi s of Eagle Lake Biology Station. 1828 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
  SBBG14876  Ceanothus prostratus var. prostratus A. I. Richardson 1961-5-30 4 Lassen rd S of Eagle Lake, 13 mi W of 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
  CAS-BOT-BC184969  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  CDA7223  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  UC1229867  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E side of Hwy 395 to Madelaine, 1.6 mi N of Termo Comment
  UCR57551  Centaurea maculosa R. D. Goeden, Don W. Ricker 1989-8-22 890822- 8 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  UCD159569  Centaurea stoebe subsp. micranthos D. S. Park 2011-6-27 306 Lassen East of Westwood. Growing near Willard Creek. Comment
  CAS-BOT-BC281203  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen W side of Highway 395, 1.7 miles S of Doyle 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
  SEINET13331057 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  CAS-BOT-BC279593  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 Comment
  CHSC99981  Centromadia pungens subsp. pungens L. P. Janeway 2008-8-2 9523 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  JEPS12581  Centromadia pungens subsp. pungens R. F. Hoover 1940-10-1 4657 Lassen between Janesville and Standish; Honey Lake 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
  CHSC29883  Cerastium fontanum subsp. vulgare Robin L. Ondricek 1978-7-15 101 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  CHSC7715  Cerastium fontanum subsp. vulgare Beverley J. Wise 1969-5-23 5 Lassen Susanville--833 Mark St. Garden. 1310 Comment
  POM101579  Cerastium glomeratum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC400184  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek 1560 Comment
  UCD35729  Cercocarpus ledifolius Beecher Crampton 1960-6-18 5710 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  SEINET10543177  Cercocarpus ledifolius Katherine L. Morris 1973-5-25 Morris 218 Lassen 2.6 miles w of susanville, on us 36, in an area of pinus jeffreyi and purshia Comment
  JEPS126473  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -063 Lassen Take 139 north to Fredonyer Peak. Comment
  UC1136909  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  SDSU6452  Chaenactis douglasii D. F. Howe 1964-7-31 3904 Lassen Modoc National Forest, 10.2 miles from entrance of the forest. 1768 Comment
  HSC42418  Chaenactis douglasii var. douglasii Barbara Kelly 1977-8-9 560 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  UC30985  Chaenactis douglasii var. douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3410 Lassen Amedee Honey Lake Valley Comment
  UC90118  Chaenactis douglasii var. douglasii unknown 1892-6-22 Lassen Honey Lake Comment
  UCD19670  Chaenactis douglasii var. douglasii Donald W. Kyhos 1967-9-1 67 -88 Lassen Mt. Lassen National Park. In the devastated area within 1/2 mile north of Hat Lake. Comment
  CAS-BOT-BC279643  Chaenactis xantiana H. D. Ripley; R. C. Barneby 1943-6-15 5754 Lassen N.-E. of Litchfield 1234 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
  CHSC19727  Chamaebatiaria millefolium Mary E. Meyer 1973-7-7 14 Lassen Located west of ELBS water tower. Comment
  CHSC30593  Chamaebatiaria millefolium Leonard Walk 1972-7-5 40 Lassen On Rd. 5.16 Belowe Eagle Lake Biology Station water tank. 1554 Comment
  CHSC4937  Chamaebatiaria millefolium W. Lessig 1967-7-15 30 Lassen 1/8 mi se of Eagle Lake Biology Station. 1554 Comment
  UC1125090  Chamaesaracha nana A. Simontacchi 1940-6-8 831 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CHSC113085  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18857 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS52357  Chamaesyce serpyllifolia Brown and Wieslander 1922-7-7 90 Lassen Eagle Lake, Martin Springs Comment
  SEINET9445226  Chamaesyce serpyllifolia M. J. Williams 1974-7-29 74 -L-47 Lassen S of Hwy 70, 2 miles W of Hallelujah Junction. 1494 Comment
  UC1130434  Chamaesyce serpyllifolia A. Simontacchi 1940-7-7 943 Lassen Halls Flat Ranger Station 1706 Comment
  JEPS95711  Chenopodium album Vernon H. Oswald and L. Ahart 1995-8-14 7180 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  CAS-BOT-BC426337  Chenopodium nitens John Thomas Howell 1934-7-10 12543 Lassen Patterson Flats Comment
  CAS-BOT-BC451322  Chimaphila Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CAS-BOT-BC247864  Chorizanthe watsonii John Thomas Howell 1934-6-10 11854 Lassen 4 miles south of Omira Comment
  POM105904  Chorizanthe watsonii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  CAS-BOT-BC36276  Chrysolepis sempervirens Cain C. Brighton 1925-8-24 95 Lassen Mt. Lassen Volcanic National Park, 1 mi below Drakesbad 1645 Comment
  CHSC23506  Chrysolepis sempervirens Wayne O. Baum 1971-7-8 71 -64 Lassen E. slope of Gallatin Peak. 1920 Comment
  SEINET8973626  Chrysolepis sempervirens W. Priest 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  CHSC78478  Chrysothamnus humilis Vernon H. Oswald 2000-7-31 9945 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  SJSU3013  Chrysothamnus viscidiflorus J. W. Tilden 1967-8-23 1772 Lassen Litchfield, southeastern Lassen County 1402 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
  JEPS21420  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-9-29 4644 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UC761819  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-9-29 4644 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  CHSC64794  Chylismia claviformis subsp. cruciformis Vernon H. Oswald 1995-5-24 6759 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of the Amedee Mtns. 1280 Comment
  UC1483859  Cirsium andersonii G. Schoolcraft 1980-8-13 354 Lassen n side Diamond Mt. Comment
  CDA1128  Cirsium canescens G. D. Barbe 1982-7-13 3881 Lassen Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd. 0 Comment
  JEPS30611  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  CAS-BOT-BC278092  Cirsium douglasii var. breweri Peter H. Raven; Otto T. Solbrig 1958-6-17 13280 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  RSA0070635  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 Lassen North of the road, 0.4 km east of campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. Comment
  JEPS59280  Cirsium occidentale var. candidissimum W. L. Jepson 1918-8-2 7796 Lassen Honey Lake Valley 1219 Comment
  SEINET2050011 Image available Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  RSA186826  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC280424  Cirsium ochrocentrum Lee E. Wheeler 1959-7-23 s.n. Lassen M. A. Mallory prop. Richmond Rd., ca. 4 mi SE/Susanville Comment
  RSA127309  Cirsium remotifolium var. rivulare J. T. Howell 1952-7-11 28836 Lassen Just S of Oregon line on road to Smith River, Del Norte County Comment
  CAS-BOT-BC286303  Cirsium scariosum Alice Eastwood; John Thomas Howell 1940-6-11 7961 Lassen Eastern Fall River Valley Comment
  CAS-BOT-BC286305  Cirsium scariosum John Thomas Howell 1934-7-6 12435 Lassen Harvey 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
  CHSC5203  Cirsium scariosum P. Balch 1955-7-19 Lassen Eagle Lake. Roadside meadow 3 1/2 mi from Antelope Lookout. 1981 Comment
  SBBG7961  Cirsium scariosum var. americanum H. and M. Dearing 1938-7-1 2242 Lassen W of Susanville Comment
  UC1119211  Cirsium scariosum var. americanum A. Simontacchi 1940-6-3 794 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CAS-BOT-BC233914  Cistanthe umbellata Carl B. Wolf 1929-9-1 3788 Lassen Mt. Lassen National Park, between Grassy and Snag Lakes Comment
  CAS-BOT-BC123818  Clarkia lassenensis Alice Eastwood; John Thomas Howell 1940-6-11 7983 Lassen Big Valley Mts. Comment
  CAS-BOT-BC163164  Clarkia lassenensis A. M. Vollmer; L. Beane 1953-7-1 98 Lassen Along Halls Flat road, beginning 6 mi. W of Susanville to McArthur 1554 Comment
  CAS-BOT-BC163420  Clarkia purpurea subsp. quadrivulnera Louella Bass 1978-7-11 78 -12 Lassen Elysian Valley 1325 Comment
  CHSC6185  Clarkia purpurea subsp. viminea 1944-7-1 Lassen Eagle Lake. 1584 Comment
  CHSC4775  Clarkia rhomboidea R. Carter 1967-6-27 564 Lassen Ca. 10 yds off S side of Rd. Comment
  UC506933  Clarkia rhomboidea George A. Fischer, Irwin H. Johnson 1933-7-14 F 246 Lassen Lassen Forest 1767 Comment
  RSA122141  Clarkia stellata L. R. Short 1936-6-23 S- 448 Lassen Burgess Spring Exp. Range, Lassen forest 1799 Comment
  RSA46419  Clarkia stellata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin s Ranch. 1829 Comment
  CHSC71096  Claytonia rubra subsp. depressa Vernon H. Oswald; Lowell Ahart 1998-5-22 9124 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Locally abundant in moist soil along a drying streamlet in a shallow ravine eroded in granitic boulders. 1463 Comment
  CHSC91185  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2005-6-1 11882 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS94123  Claytonia rubra subsp. depressa Vernon H. Oswald and Lowell Ahart 1998-5-22 9124 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  RSA0039348  Cleome John F. Emmel 1993-7-29 1282 Lassen Honey Lake Valley; ca. 2 air miles NW of Wendel. 1228 Comment
  JEPS17868  Cleome platycarpa Rimo Bacigalupi with G. T. Robbins 1955-7-21 5430 Lassen 8 mi e U.S. Hwy. 395 (along Smoke Creek Ranch road, se part of Secret Valley); Secret Valley 1402 Comment
  NY222755  Cleome platycarpa H. D. D. Ripley 1943-6-15 5757 Lassen Near Viewland. 1310.6 Comment
  UC1567389  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen e end Skedaddle Mtns. (near stateline) 1493 Comment
Read comments
Aug 12 2008
  CAS-BOT-BC32957  Cleomella alata C. C. (Mrs.) Bruce 1898-6-1 2364 Lassen Shumway Comment
  CAS-BOT-BC423223  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  CAS-BOT-BC423225  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  CAS-BOT-BC423226  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341 Comment
  CHSC64779  Cleomella plocasperma Vernon H. Oswald 1995-6-7 6834 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. On a flat dominated by greasewood and saltgrass near the railroad. 1231 Comment
  JEPS83689  Cleomella plocasperma Staria S. Vanderpool and Richard Vanderpool 1986-6-8 1236 a Lassen 0.5 mi w Wendel (on paved county road) 1196 Comment
  RSA739646  Cleomella plocasperma L. P. Janeway, Linus Gog 2008-8-2 9530 Lassen Modoc Plateau just above th flats along the S side of Rusch Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  CHSC91181  Collinsia parviflora Lowell 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. 1448 Comment
  JEPS11714  Collinsia parviflora F. W. Pennell 1940-6-9 25752 Lassen 7 mi n Madeline (along Rte 395) 1615 Comment
  UC1143037  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1737 Comment
  RSA0117240  Collinsia parviflora L. R. Short 1936-5-7 S- 344 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  RSA128300  Collinsia torreyi Peter H. Raven, Otto T. Solbrig 1958-6-16 13249 Lassen 4.5 miles east of Westwood on Hwy 36. Comment
  CHSC25140  Collomia grandiflora R. Clicquennoi 1967-6-30 28 Lassen W central shore of Eagle Lake, 1/2 mi s of Pelican Point. 1554 Comment
  CHSC4440  Collomia grandiflora K. R. Stern 1967-6-30 2450 Lassen West central side of Eagle Lake. 1554 Comment
  OBI77560  Collomia grandiflora Anthony Baniaga 2011-7-5 419 Lassen Lassen Natl Forest. E of Willard Ck. Fredonyer Pass quad T29N R10e sec 25 NE of NW Comment
  UC1123657  Collomia grandiflora A. Simontacchi 1940-7-1 895 Lassen 5.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC23479  Collomia tinctoria Wayne O. Baum 1971-7-5 71 -11 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC29920  Collomia tinctoria Robin L. Ondricek 1978-6-20 64 Lassen Gallatin Burn, 1.8 mi s of Five Corners. 2011 Comment
  CHSC98582  Collomia tinctoria B. Castro; L. P. Janeway 2005-7-10 1493 Lassen Northern High Sierra Nevada. Crest of the Diamond Mtns, overlooking Janesville and Honey Lake, 0.15 mi N of Rd 28N01 and 0.4 mi E of its junction with Janesville Grade (Rd 29N01/Rd 208). Knoll on N side of crest, in soft decomposed granite soil among rounded granite boulders. 1859 Comment
  HSC30185  Collomia tinctoria D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19261 Lassen Harvey Valley near Cone Springs Comment
  UC23854  Collomia tinctoria M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  NY1101966  Conium maculatum G. Schoolcraft 1992-6-18 2243 Lassen About 1.8 miles east of Susanville on Hwy A27 1262 Comment
  SEINET11242313  Conringia orientalis N. H. Holmgren, P. K. Holmgren 1980-1 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 miles) W of Hwy 395, from a turnoff 10.3 km (6.4 miles) S of Madeline. 1620 Comment
  CHSC7713  Convolvulus arvensis Beverley J. Wise 1969-6-4 33 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  JEPS121063 Image available Convolvulus arvensis M. L. Wheelis 1964-7-1 123 Lassen HIghway 395, 3 miles north of Hallelulah Junction. Comment
  JEPS124868 Image available Convolvulus arvensis Laurel Loeblich 1964-6-30 56 Lassen 3 mi. north of Hallelujah Junction (highways 40 & 395) on 395. Comment
  CAS-BOT-BC286114  Conyza canadensis Louella Bass 1983-9-1 s.n. Lassen At Edward Bass residence, Standish Comment
  JEPS17409  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 m <e?> of Nevada line, 17.5 m w of US Hwy 395); drainage of Rush Creek Comment
  CHSC76102  Cordylanthus maritimus subsp. canescens Lowell Ahart; Vernon H. Oswald 1999-9-13 8218 Lassen About 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC761815  Cordylanthus ramosus R. F. Hoover 1940-10-1 4655 Lassen Jonesville Comment
  POM43083  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CHSC66384  Cornus sericea subsp. sericea Vernon H. Oswald; Lowell Ahart 1996-6-17 7810 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marsh at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CHSC5205  Crepis acuminata A. Santos 1946-6-10 Lassen Eagle Lake. Near Pelican Island. 1554 Comment
  CHSC87116  Crepis acuminata L. P. Janeway 2001-6-20 7197 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1510 Comment
  UC581280  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2344 Lassen 1 mi sw Grasshopper Valley 1645 Comment
  CAS-BOT-BC290391  Crepis acuminata G. L. Stebbins, Jr.; E. B. Babcock 1936-6-7 1763 Lassen Near summit east of Red Rock 1818 Comment
  CAS-BOT-BC290393  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2313 Lassen Black Mountain about a mile below the summit 1940 Comment
  CHSC60813  Crepis bakeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 Lassen N of Hwy 44 on Rd. 33N06, on the flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. In woods bordering the road. A drying vernal pool is located in a forest opening nearby. 1798 Comment
  CAS-BOT-BC291549  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-8 2222 Lassen Six miles south of Ravensdale 1676 Comment
  UC581207  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2340 Lassen s-facing slope 3 mi e Champs 1780 Comment
  CAS-BOT-BC291572  Crepis modocensis subsp. modocensis G. L. Stebbins; J. A. Jenkins 1937-7-10 2277 Lassen Diamond Mt. 2286 Comment
  UC581275  Crepis monticola G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2332 Lassen Burgess Springs Experimental Range 1700 Comment
  SEINET10443269 Image available Crepis occidentalis M. Church 2016-5-5 7 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1443 Comment
  SEINET8513568 Image available Crepis occidentalis A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1092 Lassen Plumas Allotment, Highway 395 into California, first median crossing after check station, turn right, follow road right (South) take, 2nd left, follow uphill road bearing Southeast until reach gray metal gate, along roadside 1541 Comment
  UC30521  Crepis occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3406 Lassen Chat Honey Lake Valley Comment
  UC581194  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2303 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC581198  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-7 2197 Lassen Inspiration Point Susanville (just w of town) 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
  SEINET7838833 Image available Crepis occidentalis N. H. Holmgren, P. K. Holmgren 1978-6-11 8929 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-south of Ravendale. 1707 Comment
  SEINET2144365 Image available Crepis occidentalis subsp. costata A. A. Heller 1938-6-23 s.n. Lassen Valley east of Fredonyer Pass, on state highway 36 Comment
  CAS-BOT-BC290822  Crepis occidentalis subsp. pumila Doris Kildale Gillespie 1930-5-13 9366 Lassen Between Susanville and Janesville Comment
  CHSC67080  Cressa truxillensis Jeanne Boze 1981-6-11 106 Lassen Outer edge of Horse Lake, 11 1/2 mil. from 139 on Horse Lake Rd. 1539 Comment
  POM70805  Cressa truxillensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  UC1483839  Crocidium multicaule G. Schoolcraft 1980-4-6 199 Lassen near base of Bass Hill (along Hwy 395, near city dump) 1280 Comment
  UC767881  Crypsis vaginiflora R. F. Hoover 1940-10-10 4680 Lassen Johnstonville Comment
  UCD59985  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  CHSC13599  Cryptantha J. Pitts 1972-6-23 268 Lassen Ca. 40 yds e of Shepherd's Hall, Eagle Lake Field Station. Comment
  NY1153787  Cryptantha affinis G. Schoolcraft 1990-6-12 2089 Lassen About 17 miles east of Ravendale in Pine Dunes RNA 1707 Comment
  SDSU20524  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 524 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  CHSC93236  Cryptantha circumscissa John Dittes; Scott Chamberlain 2004-6-28 1010 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  SDSU20526  Cryptantha echinella Nuri Benet-Pierce, John P. Pierce 2012-7-14 527 Lassen Diamond Mountain. 2023 Comment
  JEPS95974  Cryptantha humilis Vernon H. Oswald and L. Ahart 1999-6-9 9743 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  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
  JEPS97421  Cryptantha intermedia Vernon H. Oswald and L. Ahart 1995-6-19 6878 Lassen Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  SBBG30581  Cryptantha intermedia D. Myrick 1968-6-19 1956 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC1249274  Cryptantha intermedia Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8480 Lassen 1 mi s Ravendale (40 mi ne of Susanville) 1615 Comment
  UC526165  Cryptantha pterocarya John Thomas Howell 1934-6-10 11851 Lassen 4 mi s Omira Comment
  CHSC27925  Cryptantha torreyana M. S. Taylor 1974-7-10 280 Lassen In meadow, ca. 1/2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  CHSC65300  Cryptantha torreyana Vernon H. Oswald; Lowell Ahart 1995-8-14 7198 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 4.7 mi W of Hwy. 395, N of Susanville. 1676 Comment
  POM72225  Cryptantha torreyana Marcus E. Jones 1897-6-25 7103 Lassen Susanville. 1341 Comment
  SEINET10497288  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 267 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC93552  Cryptantha watsonii Lowell Ahart; John Dittes 2005-6-2 11949 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction. 1498 Comment
  HSC68930  Cryptantha watsonii Gary Schoolcraft 1980-5-7 219 Lassen On Honey Lake Island 1220 Comment
  OBI75868  Cuscuta occidentalis Anthony Baniaga 2011-8-9 492 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
  CAS-BOT-BC39681  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale. 1737 Comment
  UC1523762  Cusickiella douglasii Gary Schoolcraft 1982-7-20 809 Lassen e McKesick Pk; e of McKesick Pk 2072 Comment
  JEPS127269  Cyperus squarrosus Lowell Ahart, John Dittes 2016-7-13 21139 Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  POM121177  Cystopteris fragilis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC27590  Damasonium californicum Jerry Snodgrass 1978-7-1 22 Lassen Mahogany Lake, SE of Eagle L. 2048 Comment
  CHSC60782  Damasonium californicum Vernon H. Oswald; Lowell Ahart 1993-6-14 5507 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. 1728 Comment
  HSC30066  Damasonium californicum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19182 Lassen Harvey Valley near Cone Springs Comment
  JEPS124717 Image available Damasonium californicum M. L. Wheelis 1964-6-30 137 Lassen Second bridge (to the north) between Bieber and New Bieber. Comment
  UCD138002  Damasonium californicum Calvin McMillan; Malcom A. Nobs 1949-6-15 784 Lassen Nubieber. Comment
  HSC68921  Danthonia californica Gary Schoolcraft 1980-7-28 329 Lassen E of Tule Mountain and S of Blue Lake. 2043 Comment
  UC1024914  Danthonia californica Leo Whitney 1935-6-25 3368 Lassen near Camp 10 <of?> Fruit Grower's Supply Company; Lassen National Forest Comment
  RSA0065387  Danthonia californica M. P. Harthill 1972-6-17 834 Lassen Madeline. 1676 Comment
  UC1136811  Danthonia californica var. americana George A. Fischer and Irwin H. Johnson 1933-7-12 F 236 Lassen Patterson Flat Lassen National Forest 1737 Comment
  UCD61007  Danthonia californica var. americana L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  HSC69064  Danthonia unispicata Gary Schoolcraft 1980-7-28 332 Lassen Meadow E of Tule Mountain. 2043 Comment
  UC773969  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  CAS-BOT-BC141772  Dasiphora fruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50669 Lassen Cirque-like hollow ne. of Diamond Mt. - Sierra Nevada 2255 Comment
  CHSC7730  Delphinium andersonii Beverley J. Wise 1969-5-18 83 Lassen 7.7 mi. West of Susanville on Las. Co. Rd. 215 on the south side of the road. 1341 Comment
  JEPS15484  Delphinium andersonii Joseph and Hilda W. Grinnell 1938-6-13 1098 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  UC854041  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  CAS-BOT-BC217332  Delphinium andersonii Leland S. Smith 1917-6-2 23 Lassen Parsnip Creek - Sec 35. 1524 Comment
  UC726247  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass east of Westwood. 1706 Comment
  CHSC36497  Delphinium nudicaule Theresa Costa 1982-6-3 29 Lassen Ca. .3 mi s jct forest service rds 5.16 and 5.17, ca. 5 yd w 5.16, heading toward 5-corners. Comment
  CAS-BOT-BC116047  Delphinium nuttallianum George Wilson Gillett 1957-7-21 863 Lassen Juniper Lake - Cameron Meadow trail; on wet swale 300 yards north of trail summit. 2118 Comment
  CHSC93695  Delphinium nuttallianum Lowell Ahart; John Dittes 2005-6-2 11955 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  CAS-BOT-BC116050  Delphinium nuttallianum Mrs. E. C. Sutliffe 1957-7-21 863 Lassen Drakesbad, Lassen Volcanic Park Comment
  CAS-BOT-BC194265  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen Snag Lake, margin of gravel bars 100 yards above lake near south shore - Lassen Volcanic National Park 1850 Comment
  CAS-BOT-BC194266  Deschampsia cespitosa subsp. cespitosa M. S. Baker; F. Nutting 1894-7-21 s.n. Lassen Eagle Lake Comment
  UC60239  Deschampsia cespitosa subsp. cespitosa M. S. Baker and F. Nutting July 1894 Lassen Eagle Lake 1524 Comment
  HSC100183  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 2011-8-15 13379 Lassen Along Hwy. 36 at the intersection with the Bizz Johnson Trailhead Road. Comment
  HSC69076  Deschampsia danthonioides Gary Schoolcraft 1980-7-16 313 Lassen Near Nelson Corral Reservoir. 1805 Comment
  UCD62999  Deschampsia danthonioides John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49499 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  RSA268159  Deschampsia danthonioides J. R. Reeder, C. G. Reeder 1972-6-1 5630 Lassen 2 miles S. of Nubieber. 1037 Comment
  JEPS68512  Deschampsia elongata Brown and Wieslander 1922-7-19 Lassen Martin Springs meadow Comment
  CAS-BOT-BC201808  Deschampsia elongata Malcom A. Nobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  CDA42999  Descurainia nelsonii L. Ahart, John Dittes 2008-6-19 14891 Lassen West bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  CHSC106682  Descurainia paradisa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC29947  Descurainia pinnata Robin L. Ondricek 1978-6-19 62 Lassen Around Eagle Lake Field Station. 1554 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
  UC1126908  Descurainia sophia A. Simontacchi 1940-6-8 828 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  SEINET5709536 Image available Dieteria canescens var. canescens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7711 Lassen Willow Creek. Collected along Forest Road 37N04, off of CA 139.; Willow Creek 1575 Comment
  UC1523806  Dieteria canescens var. canescens Gary Schoolcraft 1982-7-7 769 Lassen Ft. Sage Mtns. 1950 Comment
  UC506907  Dieteria canescens var. shastensis George A. Fischer and Irwin H. Johnson 1933-7-14 F- 268 Lassen Lassen Forest 1752 Comment
  CAS-BOT-BC290959  Dieteria canescens var. shastensis P. Monnet No date on label 789 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  CHSC4977  Diplacus jepsonii D. L. Stites 1967-7-14 148 Lassen Collected at Silver Lake. 1828 Comment
  CAS-BOT-BC153678  Diplacus mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat Comment
  CAS-BOT-BC153680  Diplacus mephiticus H. D. Ripley; R. C. Barneby 1944-5-22 5956 Lassen South of Janesville 1280 Comment
  CHSC57240  Diplacus mephiticus David M. Thompson 1998-6-1 923 Lassen 2.7 mi NW of Milford along Hwy 395. 1249 Comment
  CHSC5907  Diplacus mephiticus R. Gein 1946-6-12 Lassen Pine Creek bridge. 1584 Comment
  SEINET13703366  Diplacus mephiticus F. B. Headley 1915-5-28 13 Lassen Honey Lake. Comment
  SEINET201637 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8464 Lassen 50 mi SE of Susanville Comment
  CAS-BOT-BC151428  Diplacus nanus Doris Kildale Gillespie 1930-5-12 9354 Lassen Between Susanville and Leavitt Lake Comment
  CDA31694  Distichlis spicata T. C. Fuller 1959-7-7 4733 Lassen Hwy 395 just east of Standish. 0 Comment
  UC573727  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock 1341 Comment
  UC580711  Distichlis spicata E. Sawyer 1935-6-27 214 Lassen Long Valley 1310 Comment
  UC60743  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  SACT001016  Distichlis spicata var. stricta Verne Grant, Irving Schneider 1947-9-5 Lassen Rhizomatous, northwest shore of Eagle Lake Comment
  CAS-BOT-BC136177  Dodecatheon alpinum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  CHSC4780  Dodecatheon alpinum R. Carter 1967-6-27 567 Lassen Found in Murrer's upper Meadow 100 yds. S of small dam. 1584 Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  UC445031  Dodecatheon alpinum Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UC773868  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spring Experiment Range , Burgess Spring Experiment Range (Lassen National Forest) 1767 Comment
  CHSC6281  Dodecatheon pulchellum B. Anthony 1967-7-14 277 Lassen One mi e of Silver Lake. 1950 Comment
  JEPS120905  Downingia bacigalupii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18738 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS121239  Downingia bacigalupii Lowell Ahart, John Dittes 2013-7-22 18875 Lassen Around the man-made pond, about 150 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. 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
  UC1243994  Downingia bacigalupii John H. Weiler 1959-6-28 59304 Lassen 2.9 mi s Siskiyou County line (in Lassen County along Highway 89); Dickson Flat Comment
  UC1520667  Downingia bacigalupii Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9480 Lassen 5.6 mi w U.S. Highway 395 (10 air mi nw of Termo, Westside Road); Madeline Plains 1615 Comment
  UC2047850  Downingia bacigalupii Debra Valov 2016-6-21 1296 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; 100 m up private driveway; in dry vernal pool/ditch. Comment
  UCR119111  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Modoc Plateau, 5 miles west of Susanville. 1448 Comment
  CHSC60888  Downingia cuspidata Vernon H. Oswald; Lowell Ahart 1993-7-8 5647 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  SBBG69657  Downingia elegans S. W. Hutchinson -Jun-1925 494 Lassen Bieber 1270 Comment
  SFV3644  Downingia elegans I. L. Wiggins, D. B. Wiggins 1961-6-16 16532 Lassen Dry, roadside swale in Big Valley, 2.5 miles east of Modoc-Lassen County liine. 1280 Comment
  SJSU3174  Downingia insignis J. W. Tilden 1958-6-27 1290 Lassen Madeline Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  CHSC23440  Downingia laeta K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5805 Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  SEINET8039620  Downingia laeta G. Schoolcraft 1995-6-6 2493 Lassen Laver Spring. 1585 Comment
  POM222067  Downingia pulchella W. C. Merrill 1892-08 s.n. Lassen Bieber. Comment
  JEPS107454  Draba verna var. aestivalis Lowell Ahart, John Dittes 2005-6-1 11901 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS128410  Drymocallis glandulosa Catherine Bauer with Ellen Bauer Benson 2017-8-16 18 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  UC1609244  Drymocallis lactea var. lactea Vernon H. Oswald and Lowell Ahart 1993-6-28 5613 Lassen ne Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvey Mtn); Harvey Mtn., ne of Poison Lake, nne of Burgess Meadow 1798 Comment
  CHSC116194  Elatine Lowell Ahart; John Dittes 2015-7-13 20294 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  RSA0080121  Elatine californica Lowell Ahart, John Dittes 2100-06-21 17527 Lassen 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
  CHSC60975  Elatine chilensis Lowell Ahart 1993-5-17 6954 Lassen On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. Comment
  JEPS64130  Eleocharis palustris Brown and Wieslander 1922-7-30 76 Lassen Martin Springs, Eagle Lake Comment
  UC1142940  Eleocharis palustris A. L. Hormay 1941-6-18 2 Lassen Little Harvey Valley 1676 Comment
  UCD54550  Eleocharis parvula Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2734 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
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Oct 5 2010
  JEPS103218  Eleocharis quinqueflora G. Schoolcraft 1995-5-22 2483 Lassen Morgan Spring N of Skedaddle Mountains 1524 Comment
  CHSC7692  Elymus Beverly J. Wise 1969-5-23 123 Lassen 35 miles SE of Susanville on Lassen County Road 320. 1249 Comment
  HSC10944  Elymus X hansenii M. T. Milligan 1964-7-16 137 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  SEINET10525781  Elymus X hansenii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 886 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  CHSC112467  Elymus caput-medusae Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18749 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
  HSC10975  Elymus caput-medusae T. F. Newman 1965-7-28 6540 Lassen N side of Skedaddle Mtn., E side of Wendel. Comment
  CHSC111247  Elymus cinereus B. Castro; L. P. Janeway 2012-7-2 1937 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at 'Skedaddle Ranch. 1577 Comment
  CAS-BOT-BC227483  Elymus elymoides Margaret Williams; Steven Williams 1974-7-26 74 -L-42 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC227485  Elymus elymoides Brighton C. Cain 1925-8-25 125 Lassen Horse trail from Drakesbad to summit of Mt. Lassen 2438 Comment
  CAS-BOT-BC227486  Elymus elymoides Clare B. Hardham 1969-8-28 17430 A Lassen West of Janesville Comment
  UCD61524  Elymus elymoides L. D. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  UC1136930  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC53733  Elymus elymoides subsp. elymoides J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  JEPS126496  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-12 CA 350 -74 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  SEINET10554356  Elymus glaucus R. Ondricek 1978-7-22 Ondricek 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. T31N, R11E, sw quarter of Sec. 8, Antelope Peak Quadrangle. 1585 Comment
  CAS-BOT-BC206731  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CAS-BOT-BC206733  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51987 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CAS-BOT-BC206735  Elymus glaucus subsp. glaucus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49446 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  UCD62368  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen On Gold Run Creek southwest of Susanville. 1386 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
  CHSC111248  Elymus spicatus B. Castro; L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. 1417 Comment
  JEPS119960  Elymus trachycaulus Lowell Ahart, John Dittes 2012-7-9 18297 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1024916  Elymus trachycaulus Leo Whitney 1935-6-29 3362 Lassen Bieber Comment
  UC188858  Elymus trachycaulus Milo S. Baker Lassen mts. s Dixie Valley Comment
  HSC8755  Elymus trachycaulus subsp. trachycaulus M. T. Milligan 1964-8-6 205 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS117564  Elymus trachycaulus subsp. trachycaulus Lowell Ahart, John Dittes 2010-7-19 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
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Oct 5 2019
  UCD62671  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1929-5-30 Lassen Forest Office in front of Susanville. Comment
  UCD62694  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1932-7-1 Lassen Lassen National Forest. Bogard Ranger Station. Comment
  UCD62706  Elymus trachycaulus subsp. trachycaulus L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 Comment
  SEINET3129054  Elymus triticoides J. B. Davy 1897-1 sn Lassen Honey Lake Valley. Comment
  CHSC23330  Ephedra viridis Mark Stopher 1976-1-11 29 Lassen Ca. 52 miles south of Susanville on Hwy. 395 then two miles east on Red Rock Road. 1328 Comment
  CHSC60268  Ephedra viridis P. V. Caldwell 1972-6-30 299 Lassen 22 mi from Hwy 139, 7 mi w of Ravensdale (turnoff 15 mi from Susanville). Comment
  CHSC7704  Ephedra viridis Beverly J. Wise 1969-5-18 44 Lassen 13.4 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. Comment
Read comments
Dec 31 2006
  UC766775  Ephedra viridis R. F. Hoover 1940-10-5 4671 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UCR67446  Ephedra viridis George K. Helmkamp 1990-9-23 B- 17 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  JEPS117496  Epilobium brachycarpum Lowell Ahart, John Dittes 2010-7-31 17005 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1137772  Epilobium brachycarpum August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest 1706 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
  CHSC117519  Epilobium campestre Lowell Ahart; John Dittes 2016-7-13 21128 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Biebeer, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 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
  CHSC6189  Epilobium ciliatum subsp. ciliatum J. B. Kimsey 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  HSC95173  Epilobium ciliatum subsp. ciliatum Gordon Leppig, J. Cromwell 1997-7-27 617 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC20216  Epilobium ciliatum subsp. ciliatum M. S. Baker and Frank Nutting 1894-7-25 Lassen Willow Creek Comment
  CHSC99524  Epilobium ciliatum subsp. glandulosum Lowell Ahart; John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  NY1001473  Epilobium ciliatum var. ciliatum V. E. Grant 1947-9-6 8388 Lassen Irrigation ditch west of Fleming Ranch headquarters, near Wendel 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
  CHSC115607  Epilobium densiflorum Lowell Ahart; John Dittes 2015-7-13 20307 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber,, Big Valley. 1267 Comment
  JEPS39254  Epilobium hallianum Brown and Wieslander 1922-7-23 38 Lassen Martin Sprs. Eagle Lake Comment
  CHSC96725  Epilobium oregonense Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 527 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CHSC60912  Epilobium pallidum Vernon H. Oswald; Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the bed of a vernal pool on the E side of the road. 1694 Comment
  SEINET194973  Epilobium pallidum A. A. Heller 1938-7-28 15295 Lassen Edge of swamp about mile east of Westwood 1524 Comment
  CDA38101  Epilobium palustre Gordon Leppig 1998-8-17 1049 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC12451  Equisetum arvense Robert W. Severin 1969-6-26 41 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach, 3 mi s of E. L. B. S. 1645 Comment
  CAS-BOT-BC57139  Equisetum hyemale subsp. affine John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49432 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC57303  Equisetum laevigatum John Thomas Howell; Gordon H. True 1973-8-1 50235 Lassen Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville 2133 Comment
  JEPS88087  Equisetum laevigatum Vernon H. Oswald and Lowell Ahart 1996-6-17 7820 Lassen ca. 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, at 6 mi post of Devil's Corral Trailhead); Modoc Palteau 1420 Comment
  CAS-BOT-BC174120  Eremogone aculeata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16359 Lassen On ridge above NE end of Eagle Lake Comment
  CHSC118851  Eremogone congesta var. subcongesta L. P. Janeway; B. Castro 2015-6-5 11763 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley toTuledad Canyon, 7.4 road-km south ofSurprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  RSA0057704  Eremogone congesta var. subcongesta Barbara Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  CAS-BOT-BC174282  Eremogone congesta var. suffrutescens H. D. Ripley; R. C. Barneby 1943-6-14 5742 Lassen W. of Susanville 1371 Comment
  CAS-BOT-BC481938  Eremogone kingii var. glabrescens B. J. Hammerly 1941-6-21 51 Lassen 8 mi SE of Likely on Blue Lake Road Comment
  UC725471  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen on Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  CHSC64796  Eremothera minor Vernon H. Oswald 1995-5-24 6766 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  SEINET14595159  Eriastrum signatum M. J. Williams 1974-7-26 74 -L-27 Lassen S of Hwy 70, 2 miles W of Hallelujhah Junction. 1494 Comment
  UC572262  Eriastrum signatum E. Sawyer 1935-6-29 222 Lassen LOng Valley Sierraville Quadrangle 1310 Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  RSA0124149  Eriastrum signatum Christopher Davidson 1975-6-7 2763 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SEINET7356288  Eriastrum sparsiflorum Richard R. Halse 2004-7-21 6669 Lassen At junction of U.S. Hwy 395 and State Road A 26, ca 11 miles southeast of Milford.; 0 1274 Comment
  SJSU8732  Eriastrum wilcoxii M. D. Fleschner 1965-7-12 Lassen by Hwy 395, 1 mi N of Milburn 1158 Comment
  SEINET5741365 Image available Ericameria bloomeri Lowell E. Urbatsch, Vensa Karaman 2000-1 7714 Lassen Collected along Forest Road 37N11, off of CA 139. 1220 Comment
  UC1118874  Ericameria bloomeri A. Simontacchi 1940-7-7 929 Lassen 0.8 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC298170  Ericameria nauseosa var. oreophila Gary Schoolcraft 1984-9-26 1380 Lassen Painter Flat 1706 Comment
  CAS-BOT-BC298179  Ericameria nauseosa var. oreophila John Thomas Howell 1924-8-13 s.n. Lassen Near Doyle Comment
  UC1136975  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spr. Exp. Range Lassen Forest 1755 Comment
  CHSC25084  Erigeron K. R. Stern 1967-6-24 2408 Lassen Murrer Meadow, Ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  SEINET10721387  Erigeron Paul Gallian, David B. Dunn 1971-6-2 Gallian 462 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET201631  Erigeron aphanactis A. Cronquist, AH Holmgren 1959-6-17 8466 Lassen 50 mi SE of Susanville 1372 Comment
  JEPS97423  Erigeron aphanactis var. aphanactis Vernon H. Oswald and L. Ahart 1995-6-19 6890 Lassen T30N R15E SE1/4 SE1/4 Sect. 12, 4440 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 3.6 mi e of Hwy. 395. Many-stemmed herbaceous perennial from a branching and tap-rooted caudex 1353 Comment
  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
  UCR244068  Erigeron aphanactis var. aphanactis Jim Andre, G. L. Clifton 1993-6-9 19694 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC293527  Erigeron aphanactis var. aphanactis P. Monnet 1913-7-6 809 Lassen Hot Springs Peak, S.E. of Lassen County 1828 Comment
  CAS-BOT-BC33472  Erigeron barbellulatus Milo Samuel Baker; Franklin P. Nutting 1895-7-30 s.n. Lassen Silver Lake Comment
  RSA700050  Erigeron bloomeri L. P. Janeway 2001-6-20 7198 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  CHSC60815  Erigeron bloomeri var. bloomeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC68843  Erigeron bloomeri var. bloomeri Vernon Oswald; Lowell Ahart 1997-6-24 8631 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS89691  Erigeron bloomeri var. bloomeri Dean W. Taylor 1974-6-14 3719 Lassen Janesville Grade Road at summit 4 mi ssw of Janesville (Plumas National Forest); Northern Sierra Nevada, Plumas National Forest 1706 Comment
  CAS-BOT-BC294487  Erigeron bloomeri var. bloomeri Ella Dales Cantelow 1941-5-22 3566 Lassen 2 1/ mi. n. of Secret Valley C.C.C. Camp. U.S. Hy 395 Comment
  CHSC65297  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1995-8-14 7193 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small stream, N of Susanville. 1676 Comment
  CHSC66373  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1996-6-17 7808 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the Susan River E of Devils Corral Trailhead and W of the 6.0 mile post. 1402 Comment
  CHSC91207  Erigeron divergens Lowell Ahart; John Dittes 2005-6-2 11924 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CAS-BOT-BC295976  Erigeron divergens Peter H. Raven 1963-5-29 18424 Lassen U.S. Highway 395 12.0 miles south of Ravendale Comment
  CHSC60716  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1993-6-14 5515 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  CHSC89752  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1523767  Erigeron eatonii var. plantagineus Gary Schoolcraft 1981-7-8 499 Lassen about 1 mi se Coulthurst flat (on e side of road) 1920 Comment
  CAS-BOT-BC300424  Erigeron elegantulus Gary Schoolcraft 1983-6-29 1040 Lassen Along Hwy 139 near Upper McBride Sp. 1584 Comment
  UC31465  Erigeron elegantulus Mrs. C. C. Bruce 1892-6-1 2182 Lassen Madaline Plains Comment
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 Comment
  JEPS117491  Erigeron filifolius var. filifolius Lowell Ahart, John Dittes 2010-7-31 17008 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
  RSA739690  Erigeron filifolius var. filifolius John Dittes, Scott Chamberlain 2004-6-28 s.n. Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-miles east of Plumas County line. 1512 Comment
  JEPS97369  Erigeron inornatus var. calidipetris Vernon H. Oswald and L. Ahart 1995-7-24 7146 Lassen T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor 1905 Comment
  OBI76966  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen Natl Forest.N of 30N61, W of A21. Swain Mtn quad. T30N R8E sec 26 NW of SW 1728 Comment
  CHSC59077  Erigeron inornatus var. inornatus Vernon H. Oswald; Lowell Ahart 1992-8-25 5180 Lassen Lassen Volcanic National Park. Juniper Lake-Snag Lake Trail, ca. midway between Cameron Meadow and Snag Lake. 1935 Comment
  SEINET5708487 Image available Erigeron inornatus var. inornatus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7715 Lassen Grasshopper Valley. Collected along CA 139.; Grasshopper Valley 1586 Comment
  UC485173  Erigeron inornatus var. inornatus T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  HSC42422  Erigeron inornatus var. inornatus Barbara Kelly 1977-8-8 547 Lassen Ash Creek Campground Comment
  UC585085  Erigeron linearis E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1792 Lassen about 5 mi N of Terno 1371 Comment
  CHSC5209  Erigeron philadelphicus M. West 1946-7-10 Lassen Pine Creek, Eagle Lake. 1584 Comment
  CAS-BOT-BC295958  Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  HSC5530  Erigeron philadelphicus M. S. Baker 1893-1 Lassen Vicker's Ranch, Big Valley, collected in the summer Comment
  UC31512  Erigeron philadelphicus var. philadelphicus Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  RSA59554  Erigeron pumilus subsp. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mile SE of Milford, Hwy. 395, above Honey Lake 1280 Comment
  CAS-BOT-BC300122  Erigeron pumilus var. intermedius Alice Eastwood; John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  UC1118181  Erigeron pumilus var. intermedius A. Simontacchi 1940-6-30 906 Lassen 2.2 mi ene of Ebey Lake; Halls Flat Quad. 1699 Comment
  UC506996  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley 1700 Comment
  SBBG128042  Erigeron pumilus var. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen ca. 3330 feet N of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  UC762677  Eriogonum baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville Comment
  UCD99771  Eriogonum baileyi Margaret Williams; Steven Williams 1974-7-26 74- 4 - Lassen near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  NY243326  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville. Comment
  CAS-BOT-BC241569  Eriogonum baileyi var. baileyi E. K. Balls; P. C. Everett 1952-10-10 18139 Lassen 5.5 mi. n.e. of Litchfield, Hwy 395, between Susanville and Alturas 1280 Comment
  NY242982  Eriogonum baileyi var. divaricatum R. F. Hoover 1940-10-5 4673 Lassen Pass between Shaffer Mountain and Warren Peak. Comment
  CAS-BOT-BC244039  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen Between Shaffer Mt. and Warren Peak Comment
  CHSC64804  Eriogonum caespitosum Vernon H. Oswald 1995-5-31 6795 Lassen Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  RSA338584  Eriogonum collinum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9485 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  RSA509426  Eriogonum douglasii G. R. Ballmer 1988-7-19 s.n. Lassen Warner Mountains, vicinity of Blue Lake 1738 Comment
  CHSC68899  Eriogonum douglasii var. meridionale Vernon Oswald; Lowell Ahart 1997-6-24 8639 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  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
  JEPS118162  Eriogonum douglasii var. meridionale Dean W. Taylor 2009-5-21 20603 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  UC767811  Eriogonum elatum R. F. Hoover 1940-9-28 4635 Lassen 3 mi ne Susanville Comment
  CHSC50839  Eriogonum elatum var. elatum Vernon Oswald; Lowell Ahart 1990-7-25 4399 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 Comment
  RSA766386  Eriogonum eximium Susan Hutchinson 1929-12 857 Lassen Desert slope of Sierra Nevada, Lassen. 1220 Comment
  NY281810  Eriogonum maculatum N. H. Holmgren 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395. Comment
  RSA176182  Eriogonum maculatum Noel Holmgren, James L. Reveal 1964-8-22 1724 Lassen 35 miles mortheast of Susanville, 18 miles south of Ravendale along U.S. 395 Comment
  UCR92118  Eriogonum maculatum 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
  JEPS126478  Eriogonum microthecum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-18 CA 350 -069 Lassen Directly off Horse Lake Road, on either side of the road. Comment
  CHSC84392  Eriogonum microthecum var. ambiguum Lowell Ahart 2003-8-17 10518 Lassen Small drainage, about 100 yards west of the cattle guard, on the southeast side of Smoke Creek Ranch Road, about 8-9 miles (air) northeast of Highway 395, about 30 miles (air) northeast of Susanville. 1450 Comment
  UC7867810  Eriogonum microthecum var. ambiguum R. F. Hoover 1940-9-28 4636 Lassen canyon n Leavitt 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
  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
  CAS-BOT-BC266367  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True 1973-8-1 50210 Lassen East slope of Diamond RAnge south of Susanville, Sierra Nevada 2164 Comment
  SJSU9529  Eriogonum nudum var. deductum J. W. Tilden 1960-6-27 1492 Lassen Westwood 1524 Comment
  CHSC105258  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-7-31 16983 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC106170  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  JEPS117570  Eriogonum nudum var. nudum Lowell Ahart, John Dittes 2010-7-31 16983 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SD13333  Eriogonum nudum var. nudum R. V. Chamberlain 1935-9-8 6584 Lassen Guernsey Creek Comment
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. Comment
  SEINET11261507  Eriogonum nudum var. pubiflorum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3925 Lassen 5.5 rd miles west of jct with Hwy 395 on Dawn Dr then rd to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1899 Comment
  UC54767  Eriogonum ovalifolium var. ovalifolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee Honey Lake Valley, Amadee 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
  CAS-BOT-BC258146  Eriogonum prociduum var. prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W. of Madeline on rd. from Adin 1676 Comment
  CHSC12948  Eriogonum prociduum var. prociduum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5813 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  UC412800  Eriogonum spergulinum var. reddingianum Franklin P. Nutting Lassen Pine Creek Comment
  RSA31953  Eriogonum sphaerocephalum var. halimioides A. A. Heller 1938-6-23 15214 Lassen south of Secret Valley on U.S. Highway #395. 1372 Comment
  CAS-BOT-BC262733  Eriogonum sphaerocephalum var. sphaerocephalum John Thomas Howell 1934-6-10 11864 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CAS-BOT-BC262736  Eriogonum sphaerocephalum var. sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen In Balls Canyon on U. S. Highway #395 Comment
  CAS-BOT-BC262740  Eriogonum sphaerocephalum var. sphaerocephalum Brandegee 1892-6-30 s.n. Lassen Susanville Comment
  CHSC6225  Eriogonum sphaerocephalum var. sphaerocephalum A. Santos 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer summit. 2319 Comment
  NY762353  Eriogonum strictum var. anserinum J. T. Howell 1934-7-7 12478 Lassen Harvey Valley Comment
  RSA0037001  Eriogonum strictum var. anserinum Lowell A. Ahart, John Dittes 2008-6-19 14893 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
  CAS-BOT-BC267888  Eriogonum umbellatum Hans Leschke 1957-9-21 1527 Lassen Rim of Cinder Cone Crater, Lassen Volcanic National Park 2087 Comment
  RSA0025577  Eriogonum umbellatum John F. Emmel 1996-7-14 1427 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. Comment
  CHSC12489  Eriogonum umbellatum var. modocense Carol Weld 1969-7-16 62 Lassen 1 and 1/2 miles S. E. of Eagle Lake Field Station toward Hwy. 139. 1554 Comment
  CHSC86946  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. 1560 Comment
  UC725728  Eriogonum umbellatum var. modocense A. A. Heller 1938-6-23 15202 Lassen w Susanville Comment
  HSC17447  Eriogonum umbellatum var. modocense J. Wendell Howe 1934-7-9 1295 Lassen Cinder Cone, Lassen NP Comment
  CAS-BOT-BC265097  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-10 3 -83 Lassen About 3 miles east of Susanville, Center Road near Leavitt Lane, Sierra Nevada Comment
  CDA22684  Eriogonum umbellatum var. nevadense S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC14170  Eriogonum umbellatum var. nevadense K. R. Stern 1974-6-26 5867 Lassen E end of Champs Flat. Comment
  UC1537273  Eriogonum umbellatum var. nevadense Gordon H. True Jr. 1936-6-26 545 Lassen 2 mi e Eagle Lake (head of Willow Creek); Willow Creek 1584 Comment
  RSA795324  Eriogonum umbellatum var. polyanthum L. Ahart, John Dittes 2010-7-31 16988 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1511 Comment
  CHSC117539  Eriogonum vimineum Lowell Ahart; John Dittes 2016-7-13 21132 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 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
  CHSC4953  Eriogonum vimineum R. Carter 1967-6-27 561 Lassen Growing ca. 10 yds off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  POM105137  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  POM195124  Eriogonum vimineum D. D. Keck 1930-7-23 951 Lassen Susanville. 1280 Comment
  UC634595  Eriogonum vimineum Dorothy Tebbe 1929-8-1 18 Lassen along highway 1/4 mi n Susanville Comment
  SEINET10299460  Eriogonum vimineum W. L. Jepson 1918-8-5 7817 Lassen Madelin Plains 1615 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
  UC86006  Eriogonum vimineum W. E. Bryant 1888-1 Lassen Comment
  HSC95298  Eriophorum gracile Gordon Leppig, Tony LaBanca 1997-6-29 531 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA20364  Eriophyllum lanatum D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  SEINET10919981  Eriophyllum lanatum David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17793 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC308138  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  CHSC64754  Eriophyllum lanatum var. achilleoides Vernon H. Oswald 1995-5-31 6800 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 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
  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
  CDA4968  Eriophyllum lanatum var. achilleoides T. C. Fuller 1963-6-1 10634 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CHSC7648  Eriophyllum lanatum var. grandiflorum Beverley J. Wise 1969-5-15 18 Lassen 28.9 mi. east of Susanville on Hwy 395. 1554 Comment
  CHSC25127  Eriophyllum lanatum var. integrifolium Paul Lyman 1970-5-2 27 Lassen Honey Lake Valley; Janesville. Found on Bald mountain, 75 yds. north of cattle guard at south entrance. Comment
  CHSC116092  Erodium cicutarium Lowell Ahart; John Dittes 2015-7-13 20320 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS107866  Erodium cicutarium Lowell Ahart, John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  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
  JEPS124540 Image available Erodium cicutarium Laurel Loeblich 1964-6-30 58 Lassen 19 mi. north of Halleluja Junction (highways 40 and 395) on 395; 1 1/2 mi. south of Doyle. Comment
  JEPS19759  Eryngium alismifolium Rimo Bacigalupi with S. Galen Smith 1957-6-28 6007 Lassen 3.7 mi. s. Ravendale (Madeline Valley); Madeline Valley 1645 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
  UC1487306  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 550 Lassen U.C. Botanical Garden; ; alongside State Highway 395, 4.1 miles NNW of Termo, Madeline Plains Comment
  UC21010  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3374 Lassen Honey Lake Valley Comment
  UCD80866  Eryngium mathiasiae Robert E. Preston 2007-7-8 2569 Lassen Big Valley Mtns, 0.4 mi NE of Big Valley Summit, along Hwy 299. 1396 Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  RSA121673  Erysimum capitatum var. capitatum L. R. Short, B. H. Short 1936-6-15 S- 437 Lassen Lassen Forest. Longs Well. 1713 Comment
  CAS-BOT-BC55196  Erysimum repandum John Thomas Howell 1934-6-10 11904 Lassen 3 miles south of Ravendale. Comment
  CHSC7754  Erythranthe guttata Beverly J. Wise 1968-8-28 108 Lassen Edge of Crazy Harry Creek where crossed by Las. Co. Rd. 230, 6 mi. north of Hwy 36. 1645 Comment
  CHSC99532  Erythranthe guttata Lowell Ahart; John Dittes 2008-6-20 14978 -A Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC68876  Erythranthe lewisii Vernon Oswald; Lowell Ahart 1997-6-24 8616 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N42, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SEINET13723865 Image available Erythranthe moniliformis Farris Farris 1936-1 Lassen Diamond Mountain 1829 Comment
  CHSC60778  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1993-6-14 5522 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-BC403147  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-11 7964 Lassen Eastern Fall River Valley Comment
  RSA719891  Eschscholzia californica Michael A. Vincent, K. Levings 2006-7-29 12913 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  CDA3706  Euclidium syriacum E. E. Fix 1951-6-8 Lassen 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
  JEPS31883  Eurybia integrifolia Brown and Wieslander 1922-7-30 14 Lassen Martin Springs Eagle Lake Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  CAS-BOT-BC310645  Euthamia occidentalis Louella Bass 1980-8-29 s.n. Lassen Standish Comment
  CAS-BOT-BC310646  Euthamia occidentalis G. Schoolcraft 1997-8-20 2698 Lassen On Susan River behind BLM office in Susanville 1264 Comment
  CAS-BOT-BC458296  Euthamia occidentalis Louella Bass 1980-8-1 s.n. Lassen Sierra Nevada: Standish Comment
  RSA0027354  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak. 2378 Comment
  CAS-BOT-BC278428  Festuca idahoensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  CHSC27575  Festuca idahoensis Robert Schlising 1978-7-11 3316 Lassen S of Eagle Lake at Papoose Creek. 1584 Comment
  RSA715621  Festuca idahoensis L. Ahart, John Dittes 2005-6-1 11880 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1471 Comment
  JEPS28300  Festuca rubra George W. Gillett 1957-7-28 923 Lassen upper end Butte Lake (trail to Widow Lake above junction w/ Snag Lake trail, dry wash 100 yds. above trail junction); Lassen Volcanic Nat'l Park, Butte Lake 1859 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
  UC1134588  Fritillaria atropurpurea A. Simontacchi 1940-6-13 773 Lassen 3.4 mi wsw of Patterson Mountain (Lassen National Forest); Lassen National Forest 1737 Comment
  JEPS127170  Galium aparine Lowell Ahart, John Dittes 2016-7-15 21223 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA121072  Galium aparine L. R. Short, W. Gansberg 1936-6-2 S- 367 Lassen Lassen forest. MDM, Burgess Spr. Exp. Range. 1851 Comment
  JEPS94548  Galium bifolium Vernon Oswald and Lowell Ahart 1997-6-24 8606 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1655 Comment
  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
  RSA716143  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 Lassen N side of a poor dirt road. Long Valley. About 4.5 miles (air) NE of the intersection of Scott Road and Hwy 70. 5.7 miles (air) NW of Hallelujah Jct. 1411 Comment
  UC1479581  Galium multiflorum G. Schoolcraft 1980-5-30 245 Lassen sw Herlong; Bird Canyon 1432 Comment
  SEINET12495958  Galium multiflorum var. multiflorum G. Schoolcraft 1999-7-12 2857 Lassen North slope of Tulehead canyon near NV stateline 1737 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  CAS-BOT-BC478879  Gayophytum John Thomas Howell; Gordon H. True 1973-7-31 50035 Lassen On road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  UC1258488  Gayophytum diffusum subsp. parviflorum G. Schoolcraft 1979-7-3 116 Lassen up road to Observation Lookout 4.7 mi from Horne Ranch Road intersection 2103 Comment
  CHSC105245  Gayophytum heterozygum Lowell Ahart; John Dittes 2010-7-31 17025 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC25090  Gayophytum heterozygum K. R. Stern 1967-7-1 2442 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC1122615  Gayophytum humile A. Simontacchi 1940-6-6 821 A Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS107306  Gayophytum racemosum Lowell Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction 1438 Comment
  NY999656  Gayophytum ramosissimum J. T. Howell 1974-7-8 50463 Lassen Susanville 1295 Comment
  UCD55160  Gayophytum ramosissimum Ellen Dean 2006-5-15 3048 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  SEINET10491752  Gayophytum ramosissimum Paul Gallian, David B. Dunn 1971-6-2 Gallian 468 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridenta, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  JEPS31405  Gentiana newberryi G. S. Crew and C. S. Robinson 1927-7-15 68 Lassen Bogard Ranger Station, sw Lassen Co. Lassen Forest 1737 Comment
  CHSC59088  Gentianopsis simplex Vernon H. Oswald; Lowell Ahart 1992-8-25 5186 Lassen Lassen Volcanic National Park. Grassy Creek on the S end of Snag Lake. 1851 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
  JEPS61452  Geranium viscosissimum Brown and Wieslander 1922-7-24 11 Lassen Martin Springs Eagle Lake Comment
  CAS-BOT-BC143570  Geum triflorum A. G. Brenneis 1928-7-3 B 14 Lassen Lassen National Forest, Jesson Valley 1463 Comment
  UCR201713  Gilia Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  UC1584002  Gilia lottiae G. Schoolcraft 1990-6-12 2085 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); e of Ravendale in Pine Dunes RNA 1706 Comment
  CAS-BOT-BC523867  Gilia modocensis Doris Kildale Gillespie 1930-5-12 9326 Lassen 2 mi N of Susanville on road to Alturas Comment
  RSA516988  Gilia ophthalmoides Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  UC1583986  Gilia sinuata G. Schoolcraft 1990-6-12 2091 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); Pine Dunes RNA, e of Ravendale 1706 Comment
  CAS-BOT-BC280597  Glyceria elata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49473 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1776715  Glyceria elata G. Schoolcraft 1994-7-6 2354 Lassen About 2 miles west of Boot Lake 2072 Comment
  CHSC106065  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
  CHSC65359  Gratiola heterosepala Vernon H. Oswald; Lowell Ahart 1995-8-14 7200 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  UC444903  Gratiola neglecta Milo S. Baker 1899-8-24 Lassen Carmichael's Mill Big Valley (Big Valley) Comment
  CDA23423  Grayia spinosa Robin Breckenridge 2007-5-1 PDR# 1349824 Lassen Wendel. 0 Comment
  CHSC36464  Grayia spinosa Jeffrey R. Peek 1982-6-1 25 Lassen Ca. 10 yds e of Ravendale Rd, e of Horse Lake. Comment
  JEPS124631 Image available Grindelia nana Virginia Hardham 1965-7-13 132 Lassen Along roadside 1.4 mi past junction of As and 299. Comment
  SJSU3576  Grindelia nana C. L. Kline 1965-7-13 195 Lassen State Rte 299, 1 mi NE of Nubieber 1274 Comment
  UCD132463  Grindelia nana Dan Marcum 1978-7-3 s.n. Lassen exact location unknown. Comment
  SEINET12330175  Gymnosteris parvula M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -2 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale, 0.1 mi W Calif-Nev line Comment
  UC1035882  Hackelia californica Annie M. Alexander and Louise Kellogg 1946-8-13 5155 Lassen w side of Eagle Lake (top of grade) Comment
  UC1035983  Hackelia californica Helen K. Sharsmith 1955-6-27 4517 Lassen n of Hat Creek Ranger Station (forest adjacent to Highway 89); Lassen National Forest 1158 Comment
  CAS-BOT-BC231155  Hackelia cusickii Mrs. A S. Baldwin 1930-5-1 s.n. Lassen Coyote Creek lava bed Comment
  CAS-BOT-BC231156  Hackelia cusickii Mrs. A S. Baldwin 1928-5-1 s.n. Lassen Coyote Flat, over ridge from Dixie Village Comment
  UCD165252  Halogeton glomeratus John M. Tucker 1950-7-26 1978 Lassen Southeastern part of county; Herlong, CA, Herlong Ordnance Depot; (Exact location unknown, coordinates estimated by label maker). Comment
  RSA97952  Halogeton glomeratus J. L. Myler, Les Berry 1954-8-17 s.n. Lassen Karlo. Comment
  UCD98893  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  JEPS124644 Image available Helianthus annuus M. R. Kempf 1965-7-12 284 Lassen [...] miles south of Milburn on Hwy 395- Sierra Valley. Comment
  CHSC91775  Helianthus bolanderi G. Douglas Barbe 1978-8-31 2424 Lassen Modoc National Forest. Roadside, Hwy 139, NW of Willow Creek Guard Station, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). 1417 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
  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
  UC1483881  Helianthus cusickii G. Schoolcraft 1979-6-19 71 Lassen South of Big Spring Comment
  CAS-BOT-BC305660  Helianthus cusickii Philip A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale 1310 Comment
  JEPS94967  Hemizonella minima Vernon Oswald and Lowell Ahart 1997-6-24 8592 Lassen s of Susanville (1.2 mi e of Gold Run Road (29N10), on the n side of Diamond Mountain on Forest Road 29N43); Diamond Mountain, Forest Road 29N43 1685 Comment
  UC124518  Hesperochiron californicus T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UCD119473  Hesperochiron californicus Geo C. Wood 1940-4-22 s.n. Lassen Madeline Plains. Comment
  HSC82201  Hesperolinon micranthum Thomas W. Nelson, Jane Nelson 1980-7-6 6022 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 Comment
  JEPS127352  Hesperolinon micranthum Lowell Ahart, John Dittes 2016-7-13 21123 Lassen 180 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
  POM204157  Hesperolinon micranthum J. T. Howell 1934-6-10 11887 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  POM87380  Hesperolinon micranthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA795326  Hesperolinon micranthum L. Ahart, John Dittes 2010-7-31 16975 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  HSC68915  Hesperolinon micranthum Gary Schoolcraft 1980-7-10 302 Lassen Along Hwy. 139 just N of turn off to Eagle Lake campground. 1585 Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA127454  Hesperolinon micranthum Peter H. Raven, Otto T. Solbrig 1958-6-17 13300 Lassen 8.0 miles north of Madeline along Unites States Highway 395. Comment
  SEINET1910062  Heterotheca villosa var. minor Barbara Ertter 1987-1 7302 Lassen Lassen Co.: ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet in sagebrush zone. 1524 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
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake 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
  HSC103617  Hieracium horridum Thomas W. Nelson, Jane Nelson 1985-8-10 8020 Lassen Along west side of Silver Lake. 1829 Comment
  RSA32855  Hieracium scouleri A. A. Heller 1938-7-28 15301 Lassen About 2 miles east of Westwood. 1524 Comment
  JEPS97329  Hippuris vulgaris Vernon H. Oswald 1995-8-21 7211 Lassen T38N R15E SE1/4 Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC20698  Hippuris vulgaris J. Burtt Davy Jun 17 1897-Jun 24 1897 3334 Lassen Honey Lake Valley, Honey Lake 1219 Comment
  OBI75895  Holodiscus discolor var. glabrescens Anthony Baniaga 2011-8-17 506 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1850 Comment
  CHSC71232  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald; Lowell Ahart 1998-6-4 9140 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 Comment
  JEPS114655  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UCD55283  Holosteum umbellatum subsp. umbellatum Ellen Dean; Gary Schoolcraft 2006-5-16 3102 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
  UC1024652  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1933-8-2 2202 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  CAS-BOT-BC284714  Hordeum jubatum John Thomas Howell; Gordon H. True 1973-8-1 50198 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CHSC25162  Hordeum jubatum L. E. Ray 1967-6-25 54 Lassen Ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  CHSC5255  Hordeum jubatum 1944-7-11 Lassen Eagle Lake. 1615 Comment
  JEPS114836  Hordeum jubatum Lowell Ahart, John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  SEINET10967353  Hordeum jubatum Billy Joe Cox, David B. Dunn Cox 3115 Lassen 6 mi N of Hallelujah Jct. on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CDA2191  Hordeum marinum subsp. gussoneanum T. C. Fuller 1963-6-1 10622 Lassen West side of road to Susanville, 2.0 miles south of Pittville. 0 Comment
  UC12398  Horkelia fusca subsp. parviflora M. S. Baker and Frank Nutting 1894-7-28 Lassen mtns to s Eagle Lake Comment
  CAS-BOT-BC537888  Horkelia tridentata var. flavescens A. M. Vollmer; L. Beane 1953-7-1 59 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC66386  Hosackia crassifolia var. crassifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7778 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Growing on a brushy slope on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  JEPS87416  Hydrophyllum capitatum var. alpinum Vernon H. Oswald and Lowell Ahart 1993-5-12 5378 Lassen 3.5 mi nw of A21 to Westwood (on n side of road and on e side of Canal crossing Hwy 44) 1729 Comment
  RSA122624  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen MDM, Burgess Spr. Exp. Range. 1753 Comment
  RSA88526  Hypericum androsaemum P. H. Raven 1951-7-27 3627 Lassen Lake Ediya Comment
  CHSC41841  Hypericum formosum var. scouleri P. V. Caldwell 1972-7-13 271 Lassen Eagle Lake. Growing scattered on edge of upper Papoose Creek above forest road to Papoose Meadows. Comment
  UC420712  Hypericum formosum var. scouleri Franklin P. Nutting 1894-7-25 Lassen Willow Creek northern CA Comment
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Jul 3 2013
  CAS-BOT-BC401310  Hypericum scouleri B. C. Cain 1925-8-24 87 Lassen 1 mile below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  SJSU10961  Hypericum scouleri H. L. Buckalew 1961-7-10 Lassen Blue L Comment
  SD61029  Iliamna bakeri Darley F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mountains; Modoc National Forest. 1829 Comment
  SEINET8887136  Iliamna bakeri R. R. Halse 2004-1 6615 Lassen Along State Hwy 139, ca 6 miles N of Eagle Lake 1710 Comment
  UC879819  Ipomopsis aggregata C. L. Hitchcock 1940-5-26 6601 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River Comment
  UC908152  Ipomopsis aggregata Loyd Swift 1928-6-12 Lassen Hall's Flat Lassen National Forest Comment
  CHSC12453  Ipomopsis aggregata subsp. formosissima Robert W. Severin 1969-7-10 46 Lassen Found on Galatin Peak, in burn area; 2 mi s of E.L.B.S. 1828 Comment
  RSA748951  Ipomopsis congesta J. R. Shevock, Barbara Ertter 1986-7-20 11741 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles W of Madeline and U.S. Hwy 395. 1550 Comment
  JEPS118488  Iris hartwegii subsp. hartwegii Lowell Ahart, John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley 1264 Comment
  UC2013402  Isatis tinctoria Debra Valov 2012-6-19 1116 Lassen Just S of junction of Co. Road 87 A at Co. Road 87. Comment
  CHSC59161  Isoetes howellii Vernon H. Oswald; Lowell Ahart 1992-9-15 5215 Lassen Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. 2164 Comment
  RSA0025411  Isoetes nuttallii Forrest Freund 2013-5-23 193 Lassen HWY 44. Roadside depression. Along the outer edge of water pool in open patches. 1744 Comment
  CHSC30626  Iva axillaris T. M. Lane 1975-7-7 41 Lassen Along Hwy 395, 5 km nnw of Termo; 56 km s of Alturas. 1815 Comment
  HSC28862  Iva axillaris D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19298 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  RSA719895  Iva axillaris subsp. robustior Michael A. Vincent, K. Levings 2006-7-29 12908 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  RSA0011495  Iva axillaris subsp. robustior R. F. Thorne, Larry E. DeBuhr 1975-8-22 46970 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CDA8046  Iva xanthifolia Lee Wheeler 1963-7-16 Lassen Susanville. 0 Comment
  RSA614443  Ivesia paniculata M. L. Carlson 1996-6-11 s.n. Lassen 16 miles southeast of Adin on County Road 527 Comment
  SEINET6792604  Ivesia paniculata M. J. Williams 1970-7-4 595 Lassen Near Ash Creek. 1280 Comment
  UC1100958  Juncus balticus Herbert L. Mason and Verne Grant 1947-7-9 13297 Lassen 5 mi e Bieber Comment
  JEPS121288  Juncus balticus subsp. ater Lowell Ahart, John Dittes 2013-7-23 18903 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  POM261438  Juncus bufonius var. occidentalis Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville. Comment
  UCR88026  Juncus confusus J. T. Howell, G. H. True 1973-8-1 50171 Lassen Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  JEPS96098  Juncus dudleyi Vernon H. Oswald and Lowell Ahart 1996-6-17 7817 Lassen Bizz Johnson Trail at 6.0 milepost e Devils Corral Trailhead (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
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Feb 14 2008
  CHSC13585  Juncus ensifolius J. Pitts 1972-6-22 254 Lassen 140 yds. ne of Eagle Lake Field Station above marsh. Comment
  UC2553  Juncus ensifolius Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
  CHSC60787  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1993-6-3 5481 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake, on the S side of Pine Creek Valley, between Poison Lake and Susanville. Along drainages and on the edge of a meadow. 1725 Comment
  SEINET3507367 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  UC506935  Juncus mexicanus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 238 Lassen Patterson Flat Lassen National Forest 1737 Comment
  CDA33205  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC95328  Juncus nevadensis Gordon Leppig 1998-7-12 946 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA201265  Juncus nevadensis J. T. Howell 1959-9-23 34884 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  JEPS103213  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen North slopes of Skedaddle Mountains 1828 Comment
  CHSC105756  Juncus nevadensis var. nevadensis Peter F. Zika 2008-7-14 23892 Lassen Cascade Range Highlands (CaRH). S side of Route 44, SE end of Grays Valley near Lodgepole. 1730 Comment
  UC1601833  Juncus parryi M. S. Baker and Frank Nutting 1894-7-30 Lassen Silve Lake Silver Lake Comment
  UC1133737  Juncus tiehmii A. Simontacchi 1940-6-5 815 Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  CHSC87114  Juncus trilocularis L. P. Janeway 2001-6-20 7192 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
  SBBG126190  Juncus trilocularis P. F. Zika 2008-7-14 23893 Lassen S side of St Hwy 44, SE end of Grays Valley near Lodgepole 1730 Comment
  CHSC117193  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 20990 Lassen 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCD133732  Juniperus californica Grady L. Webster; with Bot. 102 class 1989-5-13 7703 Lassen Scattered in sagebrush scrub on rolling slopes 2.5 mi E of Beckworth Pass. 1493 Comment
  SEINET11738933  Juniperus californica L. V. Ritter 1969-1 191 Lassen E side Forward Rd., 8 mi NE Manton Comment
  CHSC81441  Juniperus occidentalis Sabrina Wright; Brian Sardella 2000-4-30 Lassen Northeastern CA in the Great Basin, near Susanville. At the Eagle Lake Biological Field Station. 1524 Comment
  JEPS126564  Juniperus occidentalis Lowell Ahart, John Dittes 2016-6-7 20974 Lassen About 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
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Apr 29 2013
  UCR164507  Juniperus occidentalis Maile Neel 2000-4-29 G- 4 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET10899767  Juniperus occidentalis Jeffrey Huber 1971-6-2 Huber 130 Lassen Approx. 30 mi N of Susanville, on Calif. Hwy 139, in basalt; Pinus-Artemesia-Juniper assoc. 1646 Comment
  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
  UCR1818  Juniperus occidentalis subsp. australis Frank C. Vasek 1962-9-3 620903- 04 Lassen Calif. Hwy 36, 3.6 mi west of the Ranger Station, west of Susanville 1524 Comment
  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
  SEINET10719654  Juniperus occidentalis var. occidentalis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 132 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CHSC23744  Kelloggia galioides M. S. Taylor 1974-7-10 273 Lassen Scattered on W side of Gallatin Beach Rd, ca. 3 mi S of Gallatin Beach on Eagle Lake, ca 12 mi NW of Susanville. 1524 Comment
  UC303069  Kelloggia galioides Pearl Safford Lassen Susanville [uncertain locality] Comment
  UC889305  Kelloggia galioides C. L. Hitchcock 1940-5-26 6602 Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  JEPS107461  Koeleria macrantha Lowell Ahart, John Dittes 2005-6-1 11860 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1136815  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-8-3 F 278 Lassen Lassen Forest, <Lassen National Forest> 1737 Comment
  UC773971  Koeleria macrantha L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experiment Range 1798 Comment
  HSC103612  Kyhosia bolanderi Thomas W. Nelson, Jane Nelson 1985-8-10 8004 Lassen Along north side of Silver Lake 1829 Comment
  CHSC5214  Lactuca tatarica subsp. pulchella 1944-8-11 Lassen Eagle Lake. 1584 Comment
  CHSC71383  Lactuca tatarica subsp. pulchella Vernon H. Oswald; B. Corbin, G. Schoolcraft 1998-7-13 9256 Lassen Hwy. 139 along the east shore of Eagle Lake. Roadside. 1560 Comment
  UCD106192  Ladeania lanceolata D. P. Browne 1918-5-1 s.n. Lassen Hackstaff. Comment
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Jun 30 2012
  CAS-BOT-BC341484  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CHSC7633  Lagophylla ramosissima Beverley J. Wise 1969-5-3 24 Lassen 4.5 mi. east of Hwy 395 on Las. Co. Rd. 338. 1554 Comment
  CHSC25306  Lappula redowskii var. cupulata Pauleen Broyles 1977-6-1 153 Lassen Skedaddle Ranch Road at South Fork Reservoir turn-off ca 8 km ne of Herlong. 1660 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
  CHSC99279  Lasthenia glaberrima Lowell Ahart; John Dittes 2008-6-20 14901 Lassen Sides of a vernal pool, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC67171  Layia glandulosa James D. Jokerst 1991-5-29 3311 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
  CHSC71224  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1998-6-4 9143 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  JEPS107446  Layia glandulosa Lowell Ahart, John Dittes 2005-6-1 11889 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
  UC1567443  Layia glandulosa G. Schoolcraft 1989-5-31 1884 Lassen 3 mi n Wendel road (along Skedaddle Rch. Road) 1463 Comment
  UC1609230  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
  UC74071  Layia glandulosa J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat. Long Valley Comment
  SEINET10759249  Layia glandulosa Billy Joe Cox 1971-6-2 Cox 3089 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CHSC4847  Lemna minor R. Carter 1967-7-13 590 Lassen Along shore of Willow Creek. Comment
  HSC95316  Lemna minuta Gordon Leppig 1998-8-17 1048 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS114851  Lemna minuta Lowell Ahart, John Dittes 2008-6-22 15022 Lassen On shallow water, south side of the levee, about 50 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  RSA318598A  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 Comment
  NY76542  Lepidium latifolium G. Schoolcraft 1984-7-31 1330 Lassen Along Highway 395 about 1 mile north of Ravendale Fire Station 1615.4 Comment
  CDA3793  Lepidium latifolium Lee Wheeler 1962-8-15 Lassen Ravendale area. 0 Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. Comment
  CHSC80174  Lepidium perfoliatum Jeanne Boze 1981-6-11 105 Lassen Along shore of Horse Lake, about 11.5 mi from Hwy 139 on Horse Lake Road. 1542 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
  SEINET10448290  Lepidium perfoliatum Mary Susan Taylor 1974-7-8 Taylor 259 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  UCD63835  Leptochloa fusca subsp. fascicularis Chandler Jensen 1959-9-8 Lassen Honey Lake Valley near Standish. Comment
  UC526131  Leptodactylon pungens John Thomas Howell 1934-7-9 12524 Lassen Pine Creek Flat Comment
  CHSC29874  Leptosiphon harknessii Robin L. Ondricek 1978-7-15 69 Lassen S of Mahogany Peak. 2072 Comment
  POM203798  Leptosiphon harknessii J. T. Howell 1934-7-6 12447 Lassen Harvey Valley Comment
  POM74199  Leptosiphon harknessii Marcus E. Jones 1897-7-2 10394 Lassen Susanville 1524 Comment
  CHSC61192  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1993-5-12 5375 Lassen NE side of Hwy. 44, 1.6 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  CHSC68773  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1997-5-27 8509 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  JEPS87460  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  UC1609488  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  HSC63766  Leucocrinum montanum Teresa Prendusi 1980-5-6 Lassen W side of SR 395, 0.25 mi. from old gas station 1616 Comment
  OBI77050  Leucocrinum montanum Anthony Baniaga 2011-5-31 295 Lassen Lassen NF. Off hwy 44, along 32N60. Poison Lake quad T32N R7E sec 14 SW of NE 1705 Comment
  SEINET6170686  Leucophysalis nana G. Schoolcraft 1999-6-29 2849 Lassen E edge of Madeline Plains ca 9 mi NE of Ravendale 1615 Comment
  RSA59892  Lewisia nevadensis E. K. Balls 1950-5-19 14773 Lassen above Ash Creek Public Camp, off road from Adin to Madeline. 1646 Comment
  JEPS127710  Leymus cinereus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -165 Lassen Cold Spring Road N after Dorsey Butte. Comment
  UCD64266  Leymus cinereus A. H. Shunk 1923-7-28 Lassen Madeline. Comment
  RSA126619  Leymus condensatus A. Simontacchi 1940-6-30 946 Lassen Halls Flat: 8.6 miles W. of Burgees Spring 1700 Comment
  UC1542930  Leymus triticoides G. Schoolcraft 1987-6-3 1719 Lassen Painter Flat; w side 1706 Comment
  UCD65610  Leymus triticoides L. Whitney 1933-8-5 s.n. Lassen Lassen National Forest. Near Slate Cr. 1889 Comment
  UCD87762  Leymus triticoides L. G. Stiles 1927-6-2 s.n. Lassen Milford. Comment
  CAS-BOT-BC436029  Ligusticum grayi George W. Gillett 1957-7-21 870 Lassen Lassen Volcanic National Park: Cameron Meadow 1950 Comment
  CHSC66712  Ligusticum grayi Vernon H. Oswald; Lowell Ahart 1996-8-1 8127 .1 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. On the downhill side of the road. 1737 Comment
  CAS-BOT-BC436030  Ligusticum grayi B. C. Cain 1925-8-24 106 Lassen 1 mi. below Drakesbad, Mt. Lassen Natio,al Park 1645 Comment
  SEINET4690760  Lilaea scilloides B. L. Wilson, D. Lytjen 2005-7-28 11484 Lassen Deep creek enar confluence with a smaller stream 1359 Comment
  POM109714  Lilium pardalinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  POM109716  Lilium pardalinum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  UCD116467  Limnanthes alba subsp. alba W. W. Robbins 1926-4-17 535 Lassen Grass Valley. Comment
  CHSC113073  Limosella acaulis Lowell Ahart; John Dittes 2013-7-23 18889 A Lassen Around a man made pond, about 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1609110  Limosella acaulis Vernon H. Oswald and Lowell Ahart 1993-6-14 5508 Lassen Lassen A21 (32N02) 5.3 mi e of Lassen 105 (32N28Y) ca 7 mi (air) w Eagle Lake (near Summit Camp); w of Eagle Lake 1889 Comment
  HSC20654  Limosella acaulis D. E. Anderson 1962-8-6 2332 Lassen Lake at foot of Tule Mtn. Comment
  SEINET9337712  Limosella acaulis Robert Thorne, DeBuhr, Larry 1975-8-22 47206 Lassen Hwy 395 Comment
  CAS-BOT-BC246147  Limosella aquatica R. F. Thorne; C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir Comment
  CHSC66265  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  UC1483841  Linanthus harknessii G. Schoolcraft 1980-7-16 314 Lassen near Nelson Corral Reservoir 1804 Comment
  UC1609319  Linanthus harknessii Vernon H. Oswald and Lowell Ahart 1993-6-14 5516 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd (Lassen A1), 0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  UC1107337  Linanthus septentrionalis Jean Langenheim 1957-6-22 4367 Lassen Said Valley, ne part of Lassen County Said Valley 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
  UC1924245  Linum lewisii var. lewisii Debra Valov 2004-6-3 2004237 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  CAS-BOT-BC111965  Lipocarpha micrantha John Thomas Howell 1974-7-10 50524 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC435427  Lithophragma glabrum John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 1524 Comment
  JEPS94482  Lithophragma glabrum Vernon H. Oswald and Lowell Ahart 1997-5-27 8524 Lassen 0.4 mi s of Coyote Flat (n of Susanville on Forest Route 38N04, 4.3 mi ne of Highway 139); Forest Route 38N04 1798 Comment
  UC1136912  Lithophragma glabrum L. R. Short 1936-4-28 S- 337 Lassen Harvey Valley; Lassen National Forest, Harvey Valley 1706 Comment
  CAS-BOT-BC428423  Lithophragma tenellum John Thomas Howell 1934-6-14 12129 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC25086  Lithophragma tenellum K. R. Stern 1967-6-25 2433 Lassen Meadow on road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  JEPS94478  Lithophragma tenellum Vernon H. Oswald and Lowell Ahart 1997-5-27 8503 Lassen 0.1 mi e of Highway 139 (Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat, creek paralleling the road); Forest Route 38N04 1546 Comment
  RSA0037174  Lithospermum arvense Lowell A. Ahart, John Dittes 2012-7-11 18351 Lassen North edge of a farmed field, on the south side of the highway, about 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittville, 3955 feet east of Lassen-Shasta County Line, Fall River Valley. 1205 Comment
  UC1924198  Lithospermum ruderale Debra Valov 2005-8-21 2005231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1279 Comment
  UCR73173  Lomatium G. L. Webster 1989-5-13 7718 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  JEPS96063  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1996-6-24 7855 Lassen 2.5 mi. s. Eagle lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow ca. 0.3 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1123089  Lomatium bicolor var. leptocarpum A. Simontacchi 1940-5-14 710 Lassen 10.2 mi E of Coyote Spring 1699 Comment
  RSA27417  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA271913  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
  SEINET7063559  Lomatium macrocarpum A. G. Vestal 1947-4-5 s.n. Lassen Hidden Valley south of Route 139. UTM Zone 11, 702975mE, 4478192mN. (WGS84/NAD83). 1295 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
  CHSC106579  Lomatium nevadense C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  RSA517344  Lomatium nevadense Barbara Ertter, Gary Schoolcraft 1987-6-16 s.n. Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  UC1523794  Lomatium nevadense Gary Schoolcraft 1981-4-23 365 Lassen Ash Valley 1524 Comment
  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
  RSA125874  Lomatium nudicaule P. H. Raven, Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  JEPS25531 Image available Lomatium ravenii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7145 Lassen 2 mi. s. Ravendale 1615 Comment
  RSA0049623  Lomatium ravenii Dean Wm. Taylor 2012-5-17 21208 Lassen Madeline Plains, at the western base of Juniper Ridge (ca. 5 miles E of Termo) 1615 Comment
  UC1479583 Image available Lomatium ravenii Gary Schoolcraft 1980-5-9 232 Lassen e Sierra Ordnance Depot (Herlong) (near CA-NV State line); e of Sierra Ordnance Depot (Herlong) 1219 Comment
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Oct 26 2017
  OBI48163  Lomatium triternatum Rhonda Riggins 1989-4-27 1648 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  SJSU3564  Lomatium triternatum M. D. Fleschner 1965-7-13 120 Lassen 14 mi NE of Susanville on State Route 139 1828 Comment
  CHSC42630  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2059 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  JEPS127567  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. Buckhorn Lake 7.5' Quad, Comment
  UC21281  Lomatium vaginatum Mrs. C. C. Bruce June 1898 2286 Lassen <Madaline> Plains Comment
  CHSC25907  Lotus K. R. Stern 1967-7-1 2464 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC60829  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5608 Lassen N of Hwy 44 of Harvey Rd. One (34N27) 1.5 mi NE of Aspen Well, N of Harvey Valley, NE of Poison Lake. 1761 Comment
  GMDRC7741  Lotus corniculatus J. M. Andre, G. Clifton 1993-6-11 33422 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  JEPS126485  Lotus corniculatus Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-16 CA 350 -049 Lassen Take Smoke Creek Road to Sand Pass Road. Turn left at Parker Reservoir. Comment
  SEINET3696860 Image available Lotus purshianus A. A. Heller 1938-7-28 15300 Lassen 2 miles E of Westwood 1524 Comment
  HSC23526  Lotus salsuginosus R. Carter 1967-6-27 554 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  NY716012  Lotus tenuis G. Schoolcraft 1988-7-7 1819 Lassen Near creek crossing northwest of Horne Ranch 1646 Comment
  JEPS85684  Lupinus W. L. Jepson 1937-8-11 19375 Lassen Milford 1280 Comment
  JEPS97402  Lupinus angustiflorus Vernon H. Oswald and L. Ahart 1994-7-24 7131 Lassen T31N R7E ca. center of N side of Sec. 23, 6400 ft, High Cascade Range, Red Fir Forest. 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
  JEPS28489  Lupinus arbustus George W. Gillett 1957-7-29 956 Lassen near the Butte Lake Trail (above Snag Lake); , near the Butte Lake Trail 1859 Comment
  SEINET5327673  Lupinus arbustus H. Durio 1979-5-23 s.n. Lassen Meyers Ranch, Adin 1372 Comment
  SEINET10903629  Lupinus arbustus subsp. arbustus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2590 Lassen Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville, assoc.; Purshia, artemisia 1311 Comment
  SEINET10484619  Lupinus arbustus subsp. calcaratus Jeffrey Huber 1971-6-2 Huber 110 Lassen 4 miles s of adin along cal hwy 139 in basalt - caly; valley floor in artemisia 1341 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-BC208751  Lupinus argenteus var. heteranthus John Thomas Howell 1934-7-10 12560 Lassen Black's Mt. Comment
  CAS-BOT-BC208753  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 mi. W of Doyle Comment
  CAS-BOT-BC208755  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21511 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CAS-BOT-BC208756  Lupinus argenteus var. heteranthus Frank W. Peirson 1926-6-24 6852 Lassen Madeline Plains Comment
  CHSC7679  Lupinus argenteus var. heteranthus Beverley J. Wise 1969-5-4 60 Lassen 1.8 mi. west on Shaeffer Mtn. lookout access road off Hwy 395 (approx. 1 mi. south of Las Co. Rd. 338). 1676 Comment
  JEPS87397 Image available Lupinus argenteus var. heteranthus Vernon H. Oswald and Lowell Ahart 1993-6-14 5514 Lassen 3 mi w of Eagle Lake (0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N889), Eagle Lake Road (Lassen A1)); Eagle Lake Road 1810 Comment
  NY736923  Lupinus argenteus var. heteranthus P. A. Munz 1947-5-20 11888 Lassen Milford 1265 Comment
  NY736925  Lupinus argenteus var. heteranthus P. Gallian 1971-6-2 458 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  NY736929  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 miles west of Doyle Comment
  RSA160042  Lupinus argenteus var. heteranthus David B. Dunn 1956-7-3 11919 Lassen On Highway 395. 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
  HSC28310  Lupinus brevicaulis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19280 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  JEPS79209  Lupinus brevicaulis L. R. Heckard with R. C. Bacigalupi 1980-6-11 5246 Lassen along US 395, 11.3 mi n Litchfield (s of Deep Creek crossing); , n of Litchfield 1463 Comment
  SEINET3145129  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 mi S of Doyle 1372 Comment
  SEINET10969761  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 511 Lassen 6 mi. N of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  POM23945  Lupinus confertus F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  RSA87160  Lupinus confertus Mary DeDecker 1955-8-25 262 Lassen Honey Lake: Highway 395. Comment
  SEINET10450525  Lupinus confertus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in a field near Susanville. 1298 Comment
  SEINET10488723  Lupinus lepidus Williams 1983-7-31 Williams 126 Lassen Roadside near janesville. Sandy soil with sagebrush and bitterbrush. Great Abundance 1280 Comment
  CHSC36437  Lupinus lepidus var. confertus Dave Leuck 1981-6-13 17 Lassen N.E. side of Gallatin Peak. 1706 Comment
  JEPS65081  Lupinus lepidus var. confertus W. L. Jepson Aug. 1918 7798 Lassen Raker Ranch near Buntingville; Raker Ranch naer Buntingville 1219 Comment
  JEPS88246  Lupinus lepidus var. confertus Vernon H. Oswald and Lowell Ahart 1996-6-17 7807 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, on edge of Susan River E of Devils Corral Trailhead and w of 6.0 mi post); Modoc Plateau, Susan River 1402 Comment
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  UCD108246  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395, ca 7.8 miles southeast of Susanville. 1293 Comment
  UCD18975  Lupinus lepidus var. sellulus Jack N. Reppert 1964-8-5 29 Lassen Lassen National Forest, Harvey Valley Allotment (HV 80-75). 1719 Comment
  UC126929  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 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
  NY747426  Lupinus microcarpus G. Schoolcraft 1982-6-29 742 Lassen Along Highway 395 south of Madeline 1615 Comment
  SEINET10450707  Lupinus nevadensis Taylor 1982-5-29 Taylor 4567 Lassen In sage brush scrub along dirt rd parallelling hwy. 395, On its e side, ca 1/2 Mi n of hwy. 395 Jct with scott rd, ca 20 mi n of reno. With castilleja. Comment
  SEINET10450722  Lupinus obtusilobus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park near the peak. In dry ground. Comment
  RSA32750  Lupinus onustus A. A. Heller 1940-5-22 15662 Lassen Above the Westwood Cemetery. 1524 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
  NY747608  Lupinus polyphyllus var. saxosus G. Schoolcraft 1985-5-15 1386 Lassen Along Hwy 139 about 2 miles [illegible word] of Hayden Hill turnoff 1463 Comment
  SEINET10486220  Lupinus saxosus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2593 Lassen Approx. 12 Mi s of adin on state hwy. 139. In basalt and clay; along edge of Road on rolling knoll, in artemisia-juniper association. 1372 Comment
  SEINET10485916  Lupinus sellulus var. lobbii Duane Isely, I. Isely 1971-7-12 Isely 11383 Lassen Ca 1 mi from state #44, road to bogard campground, lassen national forest (30 Mi nw of susanville). Sagebrush opening in woodlands; fugitive against rocks Or by sagebrush; arising from vertical rhizones from subterranean caudex; Corolla dull mauve; keel tip light. 1676 Comment
  UC429126  Luzula comosa var. laxa Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  CDA40734  Lycopus americanus Yeager Aug 1929 s.n. Lassen Honey Lake District. 0 Comment
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake 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
  CHSC112974  Lythrum tribracteatum Lowell Ahart; John Dittes 2013-7-23 18902 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
  JEPS121287  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET10872918  Machaerocarpus californicus Mary Susan Taylor 1982-6-12 Taylor 4647 Lassen T29N R10E ne/nw sec 13. Westwood quad. Aquatic in still pond on n side of West Fork of Susan River, s side of Hwy 36 at jct w/ Willow Cr Rd, 8 mi w Susanville. Comment
  JEPS40375  Madia elegans W. L. Jepson 1939-8-11 19373 Lassen Milford 1280 Comment
  UCR67469  Madia elegans George K. Helmkamp 1990-10-4 M 11 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  POM29904  Madia elegans subsp. elegans Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA518406  Madia elegans subsp. elegans George K. Helmkamp 1990-9-23 A- 6 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  CHSC66375  Madia exigua Vernon H. Oswald; Lowell Ahart 1996-6-17 7806 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  UC1594645  Madia glomerata Vernon H. Oswald and Lowell Ahart 1992-7-16 5130 Lassen on si side Bridge Creek Spring Road (County Rd 112, Forest Rd. 31N06) (ca 0.4 mi e of Champs Flat Rd (County Rd 105, Forest Rd 32N02), between Old Station and Susanville); Feather Lake 1749 Comment
  CAS-BOT-BC334691  Madia glomerata Alice Eastwood 1912-8-22 1801 Lassen Morgans Springs, Lassen Butte Region Comment
  UCD134274  Madia glomerata J. M. Tucker 1950-7-25 1975 Lassen road from Pittville, 33 miles northwest of Susanville. Comment
  CAS-BOT-BC343057  Madia gracilis John Thomas Howell 1974-7-10 50552 Lassen Elysian Valley 1325 Comment
  JEPS17908  Madia gracilis Rimo Bacigalupi with G. T. Robbins 1955-7-21 5432 Lassen upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Creek 1767 Comment
  JEPS88244  Madia gracilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7783 Lassen bank on n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (trail accessed at Devil's Corral Trailhead located off Hwy, ca. 7 mi w of Susanville); Modoc Plateau 1432 Comment
  SEINET481268  Madia gracilis N. H. Holmgren, P. K. Holmgren 9497 1980-7-4 Lassen Observation Peak, sousth obase in upper Smoke Creek drainage, 19 km (12 miles) airline distance east-southeast of Ravendale Comment
  POM37232  Malacothrix floccifera Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1616 Comment
  UC92217  Malacothrix floccifera unknown 1892-6-26 Lassen Milford Comment
  JEPS102664  Malacothrix glabrata V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10038 Lassen N-NE of Doyle (dirt road bordering the E side of Turtle Mountain) 1828 Comment
  UC585134  Malacothrix glabrata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1767 Lassen ridge above Red Rock 1524 Comment
  SEINET8894054  Malvella leprosa D. S. Mapes 1942-7-13 s.n. Lassen Mapes Ranch, Litchfield. 1067 Comment
  CDA5693  Marrubium vulgare T. C. Fuller 1964-10-8 12704 Lassen West side of Highway 395 to Standish, 1 mile south of Secret Valley. 0 Comment
  CAS-BOT-BC71144  Marsilea Clarence R. Quick 1962-6-17 62 -26 Lassen Swains Hole, south of Blacks Mountain Experimental station 1554 Comment
  JEPS89847  Marsilea oligospora Dean W. Taylor 1974-6-14 3712 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd.; Modoc Plateau, Poison Lake 1615 Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  JEPS127277  Marsilea vestita subsp. vestita Lowell Ahart, John Dittes 2016-7-13 21130 -B Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC99294  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  RSA715623  Matricaria matricarioides L. Ahart, John Dittes 2005-6-1 11895 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  UCD107934  Medicago sativa P. B. Kennedy 1927-9-1 s.n. Lassen Standish. Comment
  UC188796  Melica fugax Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UCD87291  Melica fugax Jack Major 1966-6-24 s.n. Lassen Lassen County (northeastern): Long Valley, 3 miles airline southwest of Patterson Guard Station, Modoc National Forest. Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 Comment
  CHSC105237  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-7-31 17019 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
  CHSC60909  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-7-8 5654 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poisen Lake. 1709 Comment
  JEPS94107  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9137 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  SFV2374  Mentzelia albicaulis I. L. Wiggins, D. B. Wiggins 1961-6-11 16340 Lassen 13.5 miles east of Susanville. 1240 Comment
  UCR244033  Mentzelia congesta Jim Andre, G. L. Clifton 1993-6-3 19703 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  CHSC4437  Mentzelia dispersa K. R. Stern 1967-6-30 2448 Lassen West Central side of Eagle Lake. 1554 Comment
  JEPS42769  Mentzelia dispersa Milo S. Baker 1890-1 Lassen Milford Comment
  UC1121689  Mentzelia dispersa A. Simontacchi 1940-6-5 817 Lassen 8 mi wnw Harvey Valley; Halls Flat Quad. 1752 Comment
  UC1191589  Mentzelia dispersa Verne Grant, Irving Schneider 1947-8-1 8228 Lassen w end Section 19 (Irringation ditch running southwest into State Fish & Game nesting area.); Medelain Plain Comment
  UC506973  Mentzelia dispersa George A. Fischer, Irwin H. Johnson 1933-7-12 F 229 Lassen Lassen Forrest, Patterson Flat 1737 Comment
  CDA36642  Mentzelia dispersa T. C. Fuller 1963-7-15 10900 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC27075  Menyanthes trifoliata Robert A. Schlising 1978-8-1 3332 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  JEPS88323  Menyanthes trifoliata Vernon H. Oswald and Lowell Ahart 1996-6-24 7890 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, Papoose Meadows); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC7719  Mertensia ciliata var. stomatechoides Clarence Ash 1969-5-21 2 Lassen Diamond Mountain, distance from Susanville undetermined. 1828 Comment
  CHSC101036  Micranthes nidifica John Dittes 2008-5-22 1522 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca. 480 feet north of intersection of Hwy 139 and FS Road 36N02. 482 Comment
  CHSC60877  Microseris laciniata subsp. laciniata Vernon H. Oswald; Lowell Ahart 1993-7-8 5670 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  CHSC77197  Microseris laciniata subsp. laciniata G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area S. of TulePatch Spring. Meadow. 1463 Comment
  JEPS118158  Microseris laciniata subsp. laciniata Dean W. Taylor 2009-5-21 20606 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  CHSC89724  Microseris nutans L. P. Janeway 2004-6-26 8152 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS126531  Microseris nutans Lowell Ahart, John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 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
  CHSC112452  Microsteris gracilis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18741 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
  CHSC61166  Microsteris gracilis Vernon H. Oswald; Lowell Ahart 1993-5-12 5376 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 ( to Westwood). 1729 Comment
  CHSC6206  Microsteris gracilis C. Palmiter 1946-6-20 Lassen Grasshopper Valley. Eagle Lake. 1624 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
  RSA104218  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-17 9799 Lassen South of Secret Valley, north of Litchfield 1311 Comment
  UC1776670 Image available Mimulus arvensis G. Schoolcraft 1994-7-6 2356 Lassen About 2 miles west of Boot Lake 2103 Comment
  UC1609365  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  JEPS28988  Mimulus guttatus Frances D. Payne 1929-7-12 97 Lassen near s extremity Warner Range; Upper Silver Creek 2499 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
  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
  JEPS24856  Mimulus nanus var. mephiticus Jean Langenheim 1957-6-26 4377 Lassen nw end Said Valley 1645 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
  POM43828  Mimulus nanus var. nanus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  RSA60366  Mimulus nanus var. nanus E. K. Balls 1950-5-9 15953 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  HSC95324  Mimulus primuloides var. primuloides Gordon Leppig, J. Cromwell 1997-7-27 604 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1063104  Mimulus pulsiferae A. Simontacchi 1940-6-15 862 Lassen 2.3 mi ssw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  RSA536402  Mimulus suksdorfii Beth Corbin 1991-6-3 620 Lassen SW Harvey Valley, ca. 200 m NE of Whitehorse Well, ca. 6 mi N if USFS Bogart Work center. 1700 Comment
  UC1063539  Mimulus suksdorfii A. Simontacchi 1940-5-14 716 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle 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
  CAS-BOT-BC221780  Monardella odoratissima Gordon H. True 1936-6-27 552 Lassen Between Bull Flat and Hot Spring Mt. 1524 Comment
  SEINET13948657 Image available Monardella odoratissima Ralph K. Gierisch 1968-1 3354 Lassen Highway 44; 5700 ft alt., T31N, R8E, SEC23 1737 Comment
  CAS-BOT-BC221974  Monardella odoratissima subsp. glauca John Thomas Howell 1934-7-8 12487 Lassen Spalding's, Eagle Lake Comment
  JEPS95713  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  JEPS95748  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 Lassen Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  UC1137693  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen National Forest 1722 Comment
  UC295853  Monardella odoratissima subsp. glauca H. M. Hall 1925-8-30 12213 Lassen 27 mi s Alturas 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
  CAS-BOT-BC222147  Monardella odoratissima subsp. pallida W. Lessig 1967-7-20 28 Lassen 2 mi s of Five Corners on w side of rd to Dean's Meadow 1828 Comment
  JEPS122366  Monardella sheltonii Joseph Broberg, Jaycee Leonard 2012-8-27 CA 320 -127 Lassen From Alturas head South on Highway 395. At the town of Likely turn left onto county road 64, and continue to Jess Valley. Turn right at fork onto county road 258. Continue past Blue Lake, and turn onto Clark Valley road. Collection site is just after border between BLM and USFS land. South of aspen stand Comment
  CHSC116086  Monolepis nuttalliana Lowell Ahart; John Dittes 2015-7-13 20311 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC81781  Monolepis nuttalliana Thomas W. Nelson, Jane Nelson 1980-7-6 6013 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 Comment
  RSA370315  Monolepis pusilla A. Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10351 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
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Feb 14 2017
  UCR244049  Monolepis pusilla Jim Andre 1993-6-1 19719 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC57311  Montia chamissoi Mary Meyer 1980-7-9 Lassen In Horse Camp Spring. 1706 Comment
  CHSC64849  Montia chamissoi Vernon H. Oswald 1995-6-26 6924 Lassen Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally bundant in shallow water in a rocky, roadside streamlet. 1712 Comment
  JEPS28404  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen 1 mi above Butte Lake (Lassen Volcanic National Park, Widow Lake Trail); Lassen Volcanic National Park, Widow Lake Trail 1905 Comment
  UC1136742  Montia chamissoi Robert W. Gardner 1937-6-14 G 3 Lassen Burgess Spring Experimental Range 1767 Comment
  CAS-BOT-BC445064  Montia linearis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49216 Lassen Elysian Valley northwest of Janesville 1325 Comment
  SEINET5334396  Montia linearis J. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, Ca. 1372 Comment
  UC1024657  Muhlenbergia andina Leo Whitney 1934-7-24 2195 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  CAS-BOT-BC262633  Muhlenbergia asperifolia John Thomas Howell 1934-7-8 12489 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC262635  Muhlenbergia asperifolia John Thomas Howell 1973-7-10 49801 Lassen Hwy. 395, 4 miles north of Doyle Comment
  UC1776691  Muhlenbergia asperifolia G. Schoolcraft 1999-7-7 2854 Lassen about 9 miles NE of Ravendale - dune N of Horne Ranch Road 1621 Comment
  CAS-BOT-BC260595  Muhlenbergia filiformis G. Schoolcraft 1997-7-30 2623 Lassen W slope of Diamond Mountain 1889 Comment
  CAS-BOT-BC260596  Muhlenbergia filiformis George W. Gillett 1957-7-28 940 Lassen Lassen Volcanic National Park. Near W end of Widow Lake 2072 Comment
  HSC95294  Muhlenbergia filiformis Gordon Leppig 1998-7-12 958 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC275082  Muhlenbergia richardsonis Malcom A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline Comment
  RSA129677  Muhlenbergia richardsonis G. A. Fischer, Irwin Johnson 1933-7-12 F- 196 Lassen Lassen National Forest; Grass Valley. 1695 Comment
  UC1101591  Muhlenbergia richardsonis Malcolm A. Nobs and S. Galen Smith 1949-7-21 1060 Lassen 4 mi n Madeline (shallow marshy stream from springs) Comment
  UC506980  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 224 Lassen Stringer Mdw. Lassen National Forest 1722 Comment
  UCD39732  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 Comment
  CAS-BOT-BC275156  Muhlenbergia richardsonis George W. Gillett 1957-7-22 871 Lassen Lassen Volcanic National Park. Snag Lake, S shore 1850 Comment
  RSA0011555  Muhlenbergia richardsonis R. F. Thorne, Larry E. DeBuhr 1975-8-22 46997 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC515652  Muilla transmontana B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6599 Lassen U.S. Hwy. 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield. 1330 Comment
  CHSC7657  Muilla transmontana Beverley J. Wise 1969-5-3 145 Lassen 4.7 mi. east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1615 Comment
  CHSC91312  Myosotis discolor Lowell Ahart; John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  RSA715554  Myosotis discolor L. Ahart, John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  CHSC60917  Myosurus apetalus var. borealis Vernon H. Oswald; Lowell Ahart 1993-7-8 5651 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Along the edge of a wet pool on the E side of the railroad, which parallels the lake shore at this point. 1709 Comment
  OBI76991  Myosurus apetalus var. borealis Anthony Baniaga 2011-6-10 325 Lassen Lassen/Modoc County. On the S side of Hwy 299, ca. 1.2 mi E of Lassen County rd 428. 1295 Comment
  CHSC64893  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6895 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  CHSC99498  Myosurus minimus Lowell Ahart; John Dittes 2008-6-20 14940 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS120862  Myosurus minimus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18726 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  SEINET200135 Image available Myriophyllum exalbescens Verne Grant, Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
  CHSC77217  Myriophyllum quitense G. Schoolcraft 1996-7-10 2533 Lassen Willow Creek, ne. of Susanville. 1432 Comment
  CHSC65036  Nama aretioides var. californica Vernon H. Oswald; Lowell Ahart 1995-7-5 6955 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy 395. 1383 Comment
  JEPS29749  Nama aretioides var. multiflora Rimo Bacigalupi and L. R. Heckard 1962-5-28 8503 Lassen in area n of Honey Lake (2 mi e of Wendel Junction on road from U.S. 395 past Flanagan to Pyramid Lake, Nevada) 1219 Comment
  CDA40304  Nama aretioides var. multiflora S. E. Piper 1943-7-2 s.n. Lassen 0.5 mile east of Herlong. 0 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
  CHSC9067  Navarretia Silas Carr 1970-6-24 126 Lassen E. edge of road entering N. portion of Murrers Meadow. Comment
  HSC75910  Navarretia breweri D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19274 Lassen Harvey Valley near Cone Springs Comment
  NY1012731  Navarretia breweri N. H. Holmgren 1980-7-3 9491 Lassen Rye Patch Canyon road, 3.4 km (2.1 miles) east of U.S. Highway 395, 14.5 km (9 miles) airline distance southeast of Ravendale 1700 Comment
  CDA40081  Navarretia breweri T. C. Fuller 1963-6-11 10658 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  UCD32675  Navarretia breweri Beecher Crampton 1954-7-6 2080 Lassen Lassen County, 3 miles north of Madeline, along US highway 395. Comment
  CHSC29885  Navarretia capillaris Robin L. Ondricek 1978-7-5 89 Lassen At the edge of the trees on the ne side of Mahogany Lake. 2057 Comment
  UC1124159  Navarretia divaricata A. Simontacchi 1940-5-28 777 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  SEINET3894760  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -065 Lassen Along Hwy 299 about 9.4 miles east of jct with Hwy A2 and 1.4 west of jct with Hwy 139, southwest of Adin.; 0 Comment
  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
  JEPS127278  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2016-7-13 21131 Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC58848  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5111 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. On the bed of the creek on the bed of the reservoir. Blue-flowered plants collected at Long Lake. 1691 Comment
  CHSC99510  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2008-6-22 15031 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS106521  Navarretia intertexta subsp. propinqua L. P. Janeway 2004-6-26 8144 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
  CHSC1252  Navarretia leptalea K. Chew 1951-7-8 Lassen Stephens Meadows, Pine Creek. 1706 Comment
  CHSC6202  Navarretia leptalea J. B. Kimsey 1946-6-26 Lassen Pine Creek, Eagle Lake. 1615 Comment
  RSA67608  Navarretia leptalea Verne Grant, Alva Grant 1950-7-13 8943 Lassen Camp Fredonyer, on road from Westwood to Susanville 1524 Comment
  JEPS19812  Navarretia leucocephala Rimo Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  CHSC112753  Navarretia leucocephala subsp. leucocephala Lowell Ahart; John Dittes 2013-7-22 18851 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
  CHSC110909  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2012-7-9 18288 Lassen . Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  CHSC89737  Navarretia leucocephala subsp. minima L. P. Janeway 2004-6-26 8145 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS114396  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  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
  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
  UC1537488  Navarretia leucocephala subsp. minima Gordon H. True Jr. 1936-6-25 528 Lassen e of Harvey Ranger Station; Harvey Valley 1706 Comment
  HSC96700  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1986-6-24 8183 Lassen Along SR 395 58.9 mi. N of jct. with SR 36 Comment
  UC1178962  Navarretia linearifolia subsp. linearifolia Herbert L. Mason Jul 29 1955-Jul 31 1955 14643 Lassen near Westwood Junction (railroad station 15 mi w Susanville) (southern Lassen County); w of Susanville, near Westwood Junction Comment
  SEINET14160494  Navarretia sinistra D. W. Taylor 2012-7-18 21281 Lassen Cascade Ranges, Windmill Flat (9tributary Juniper Creek, Pit River watershed, 11 miles S of Adin), Letterbox Hill. 1707 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
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 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
  UC1137711  Nemophila parviflora var. austiniae L. R. Short and J. Warren 1936-6-9 S- 404 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1844 Comment
  UC67087  Nemophila parviflora var. austiniae T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  RSA122626  Nemophila parviflora var. austiniae L. R. Short, J. Warren 1936-6-9 S- 404 Lassen Burgess Spring Experiment Range. 1845 Comment
  CHSC61157  Nemophila pedunculata Vernon H. Oswald; Lowell Ahart 1993-5-12 5389 Lassen Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. In a sagebrush scrub meadow on the S side of the road. 1719 Comment
  UC604533  Neoholmgrenia andina C. W. Sharsmith 1938-7-18 3636 Lassen three mi s Termo Comment
  JEPS124374  Nepeta cataria Lowell Ahart, John Dittes 2015-7-13 20313 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET10756782  Nestotus stenophyllus Billy Joe Cox 1971-6-2 Cox 3105 Lassen Approx. 30 mi. N of Susanville, on CA Hwy. 139, in basalt. 1646 Comment
  HSC22942  Nicotiana acuminata John Pratt 1970-6-27 46 Lassen 0.5 mi. E of Turtle Head 1220 Comment
  CHSC13736  Nicotiana attenuata S. Villard 1973-7-16 50 Lassen 2 miles north of Eagle Lake Marina on dirt road going to Eagle Lake Field Station. Roadside. Comment
  POM103204  Nitrophila occidentalis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 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-BC400059  Nuphar polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10-15 miles west from Amedee 1219 Comment
  CHSC106678  Oenothera deltoides subsp. piperi Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  UC1122216  Oenothera deltoides subsp. piperi E. Sawyer 1935-6-27 231 Lassen Long Valley Sierraville Quadrangle Comment
  SEINET10491875  Oenothera deltoides subsp. piperi Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2591 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and calif hwy 36 to susanville, near johnstonville. Assoc; purshia-artemesia. 1311 Comment
  UC157874  Olsynium douglasii var. douglasii Milo S. Baker 1890-1 Lassen Milford Comment
  CHSC9548  Onobrychis viciifolia R. Clicquennoi 1967-6-24 13 Lassen .2 mi w of main rd. 3 mi e of Eagle Lake Biological Station on rd. to Murrer's Meadow. 1554 Comment
  RSA0049669  Onopordum acanthium subsp. acanthium Dean Wm. Taylor 2012-5-15 21197 Lassen Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley) 1676 Comment
  CAS-BOT-BC350042  Oreostemma alpigenum var. andersonii Hans Leschke 1958-9-30 1571 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  UC773942  Orobanche corymbosa subsp. corymbosa L. R. Short and J. Warren 1936-6-30 S- 465 Lassen NW of Eagle Lake, Burgess Spring Experiment Range. Comment
  SEINET10935676  Orobanche uniflora Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2594 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road on Rolling knoll, in artemisia-juniper assoc. 1372 Comment
  CAS-BOT-BC500324  Orobanche uniflora subsp. occidentalis H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 18.5 mi W of Susnville, Hwy 36 Comment
  CHSC27677  Orthocarpus cuspidatus subsp. cryptanthus Jerry Sndgrass 1978-6-28 5 Lassen Lower Dry L., E of Eagle L. 1645 Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  CHSC59821  Orthocarpus cuspidatus subsp. cryptanthus Mary Meyer 1980-7-8 Lassen 1706 Comment
  JEPS9435  Orthocarpus cuspidatus subsp. cryptanthus Brown and Wieslander 42 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  SEINET13756747  Orthocarpus cuspidatus subsp. cryptanthus N. H. Holmgren, Patricia K. Holmgren 1978-6-12 8933 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance east-southeast of Ravendale. 1768 Comment
  UC1523736  Packera cana Gary Schoolcraft 1981-6-15 461 Lassen Ash Valley 1554 Comment
  HSC95271  Packera pseudaurea var. pseudaurea Gordon Leppig 1998-7-12 948 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  UC485769  Paeonia brownii H. E. and S. T. Parks June, 1928 223 Lassen Drakesbad Lassen National Park Comment
  CAS-BOT-BC10387  Paeonia brownii J. T. Howell; Gordon H. True; Margaret Williams 1973-5-12 49158 Lassen In cemetary, Janesville 1295 Comment
  CDA24372  Paeonia brownii T. C. Fuller 1962-6-13 8997 d Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  SEINET10537847  Paeonia brownii Mary Susan Taylor 1982-8-27 Taylor 5053 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  SEINET10537856  Paeonia brownii Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2604 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC253720  Panicum capillare John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49511 Lassen Elysian Valley, W of Janesville 1325 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
  RSA126977  Panicum capillare H. S. Yates 1936-8-11 6073 Lassen Baxter Creek 1280 Comment
  SEINET223918  Panicum capillare subsp. capillare Arnold Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs Comment
  SEINET10456341  Pectocarya penicillata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 874 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  JEPS79152  Pedicularis attollens L. R. Heckard with R. Bacigalupi 1980-6-12 5259 Lassen just ne of Westwood (near golf course) 1554 Comment
  CAS-BOT-BC7094  Pedicularis attollens subsp. protogyna Francis Whittier Pennell 1940-6-10 25771 Lassen Route 36 road to Coppervale R.S., E of Westwood Comment
  NY90883  Pedicularis attollens subsp. protogyna F. W. Pennell 1940-6-10 25771 Lassen Route 36. Road to Coppervale R. S., E of Westwood. Comment
  UC2042972  Pedicularis semibarbata Barbara Ertter 1990-5-13 8965 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  HSC68837  Penstemon deustus Gary Schoolcraft 1979-6-26 97 Lassen Small peak N of Radeo Flat 1951 Comment
  POM195126  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 948 Lassen Susanville. 1280 Comment
  POM252931  Penstemon deustus subsp. sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass on Hwy 36. 1646 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
  CHSC29258  Penstemon gracilentus J. D. Prouty 1978-6-28 11 Lassen E of Eagle L., at W shore of Lower Dy L. Comment
  CHSC57205  Penstemon gracilentus Mary Meyer 1980-7-23 Lassen Along Cleghorn Creek. 1645 Comment
  HSC69068  Penstemon gracilentus Gary Schoolcraft 1980-8-13 352 Lassen N face of Diamond Mtn., S of Susanville 1982 Comment
  JEPS11268  Penstemon gracilentus Brown and Wieslander 1922-7-25 5 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  SEINET10917288  Penstemon gracilentus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1900 Comment
  UC1483843  Penstemon gracilentus G. Schoolcraft 1979-7-3 110 Lassen 4.3 mi up the road from Observation Peak (near Curlleaf Mtn.); up rd from Obseration Peak, near Curlleaf Mtn. 2133 Comment
  SEINET5328215 Image available Penstemon gracilentus G. Schoolcraft 1994-7-7 2370 Lassen about 1 mi W of Boot Lake 235 Comment
  CHSC23709  Penstemon heterophyllus var. purdyi Robert Smallwood 1970-6-27 123 Lassen Dean's Meadow. North east edge. Comment
  UC1537429  Penstemon laetus Gordon H. True Jr. 1936-6-25 530 Lassen e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station 1767 Comment
  RSA0065446  Penstemon laetus M. P. Harthill 1971-6-20 207 Lassen Ravendale. Comment
  SEINET11262098  Penstemon neotericus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3937 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  HSC21043  Penstemon newberryi Fred J. Kindel 1955-7-19 Lassen Silver Lake Comment
  CAS-BOT-BC239221  Penstemon newberryi var. berryi Clare B. Hardham 1969-8-28 17449 Lassen West of Janesville 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
  POM203060  Penstemon roezlii J. T. Howell 1934-6-10 11877 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  SBBG28920  Penstemon roezlii D. D. Keck 1954-7-23 954 Lassen 12 mi W of Susanville 1676 Comment
  CAS-BOT-BC239499  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36, road to Coppervale R.S., E. of Westwood 1493 Comment
  CHSC107320  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2011-6-20 17502 Lassen Meadow, about 40 yards west of the stream, about 50 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
  NY651252  Penstemon rydbergii var. oreocharis G. Schoolcraft 1985-6-12 1418 Lassen Edge of Grasshopper Valley, at south end. 1615.4 Comment
  UC696713  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen about 4 mi e Westwood; e of Westwood 1432 Comment
  UCSB6193  Penstemon rydbergii var. oreocharis Heller, A. 1938-6-23 Lassen East of Westwood 1493 Comment
  SBBG128900  Penstemon rydbergii var. oreocharis L. Ahart, J. Dittes 2008-6-20 14919 Lassen ca. 100 yards SW of where the levee rd crosses Big Valley Canal in Big Valley, ca. 4 mi (air) NE of Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CHSC23549  Penstemon speciosus W. O. Baum 1971-6-28 25 Lassen S. slope of Gallatin Peak. 2042 Comment
  HSC35070  Penstemon speciosus D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19189 Lassen Harvey Valley near Cone Springs Comment
  JEPS11507  Penstemon speciosus Milo S. Baker 1890-1 Lassen Honey Lake Valley Comment
  RSA401878  Penstemon speciosus Rockwell 1925-07 s.n. Lassen Eagle Lake. Comment
  UC1226034  Penstemon speciosus Arthur Cronquist, Arthur H. Holmgren 1959-6-16 8455 Lassen 26 mi nw Reno; nw of Reno Comment
  SEINET5329894 Image available Penstemon speciosus F. B. Headley 1915-5-28 3 Lassen Honey Lake Comment
  NY660819  Penstemon speciosus subsp. speciosus F. D. Payne 1929-7-12 86 Lassen Ridge above Lost Lake, southern end of the Warner Range. 2286.0 Comment
  CAS-BOT-BC239662  Penstemon sudans John Thomas Howell 1977-6-22 52404 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  CHSC13647  Penstemon sudans M. S. Taylor 1974-7-13 310 Lassen Ca 15 ft w of Mohagany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  OBI75899  Penstemon sudans Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 478 Lassen Lassen Natl Forst. Hwy 36, ca. 1/4 mi E of "Fredonyer Pass Winter OHV Parking Lot" Fredonyer Pass quad T29N R10E sec 2 NW of SW 1950 Comment
  RSA0029641  Penstemon sudans Anthony Baniaga, R. Bomberger 2011-7-28 478 Lassen Lassen National Forest. Highway 36, ca. 1/4 mile E of 'Fredonyer Pass Winter OHV Parking Lot.' 1950 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
  JEPS107689  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
  CHSC85820  Perideridia bolanderi subsp. bolanderi David French 1968-6-2 2881 Lassen Near State Hwy. 36, 13.8 mi E of Westwood, 5.1 mi E of Fredonyer Pass; roughly 8 mi W of Susanville. 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
  UC1137777  Perideridia bolanderi subsp. bolanderi George A. Fischer and Irwin H. Johnson 1933-7-12 F 210 Lassen Grass Valley Lassen National Forest 1722 Comment
  UC20876  Perideridia oregana Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  CHSC30568  Persicaria amphibia Sori H Shad 1970-6-19 29 Lassen Found in aquatic habitate near Pine Creek fish Hatchery. 1524 Comment
  CHSC6229  Persicaria amphibia J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  SJSU10648  Persicaria amphibia H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CHSC5259  Phacelia adenophora 1944-6-21 Lassen Eagle Lake shore. 1584 Comment
  JEPS17754  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5429 Lassen along Smoke Creek Ranch rd 8 mi e U.S. Hwy. 395 (se part of valley); Secret Valley 1402 Comment
  SEINET3091787 Image available Phacelia adenophora Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway. 1387 Comment
  UC1537547  Phacelia adenophora Gordon H. True Jr. 1938-7-8 905 Lassen near Termo 1371 Comment
  UC1603542  Phacelia adenophora Arnold Tiem, Margaret Williams, and Jan Nachlinger 1988-6-2 11701 Lassen on hwy 395 3.4 road mi n Wendel road (from Susanville to Alturas, s side of mt., w of hwy); Shaffer Mt. 1386 Comment
  UCD84588  Phacelia adenophora J. DiTomaso 2010-7-2 s.n. Lassen 15 miles E of Hwy 395 on Smoke Creek Ranch Road. Three miles W of Nevada state line. Comment
  RSA83071  Phacelia adenophora Verne Grant, Alva Grant 1947-8-1 8225 Lassen On dike of irrigation ditch southwest of Madeline. Comment
  SEINET12332924  Phacelia adenophora A. Tiehm, Nachlinger, J.; Williams, M. 1988-1 11701 Lassen S side of Shaffer Mt., 3.4 road mi N of the Wendel road on Hwy 395 from Susanville to Alturas Comment
  NY1052542  Phacelia bicolor W. W. Eggleston 1911-5-29 6742 Lassen Vicinity of Doyle Station 1290 Comment
  RSA0009544  Phacelia bicolor Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  UCD120478  Phacelia hastata John Thomas Howell 1934-7-8 12480 Lassen Champ's Flat. Comment
  HSC82267  Phacelia heterophylla Thomas W. Nelson, Jane P. Nelson 1980-7-6 5999 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CHSC66390  Phacelia heterophylla subsp. virgata Vernon H. Oswald; Lowell Ahart 1996-6-17 7776 Lassen Modoc Plateau. Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy.36 ca. 7 mi W of Susanville. Locally abundant along the trail and on brushy slopes at the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  JEPS107814  Phacelia heterophylla subsp. virgata Lowell Ahart, John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction 1512 Comment
  UC773946  Phacelia heterophylla subsp. virgata L. R. Short 1936-6-30 S- 463 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1816 Comment
  UC133087  Phacelia humilis T. S. Brandegee 1892-7-3 Lassen Susanville Comment
  UC24377  Phacelia humilis Mrs. C. C. Bruce June 1898 2191 Lassen Susanville Antelope hills Comment
  UC735052  Phacelia inundata Lincoln Constance 1946-7-3 3097 Lassen Spauldings Eagle Lake (w edge of lake) 1706 Comment
  CHSC4813  Phacelia linearis R. Carter 1967-7-7 576 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  POM73491  Phacelia linearis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA337277  Phacelia lutea Noel Holmgren, Patricia K. Holmgren 1980-7-3 9473 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  NY1056442  Phacelia lutea var. glandulifera A. J. Cronquist 1959-6-17 8479 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  RSA129733  Phacelia mutabilis G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 226 Lassen Lassen National Forest. 1723 Comment
  UC107462  Phacelia racemosa Mrs. R. M. Austin 1879-1 Lassen Eagle Lake Comment
  NY1058138  Phacelia ramosissima var. eremophila N. H. Holmgren 1980-7-4 9508 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  HSC29510  Phacelia thermalis C. L. Hitchcock 1940-5-26 Lassen 1 mi. W of Bieber, Pitt River Comment
  POM73715  Phacelia thermalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1187649  Phacelia thermalis Lincoln Constance, Elwood Molseed, John Weiler 1960-6-13 3678 Lassen 9 mi n Litchfield 1219 Comment
  UC60737  Phleum alpinum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC41845  Phleum pratense P. V. Caldwell 1972-7-12 272 Lassen Eagle Lake. On banks from Eagle Lake to Papoose Meadows on Papoose Creek. Comment
  UC1037092  Phleum pratense Leo Whitney 1933-7-1 2214 Lassen ca 15 mi w Eagle Lake (Crater Mountain); Lassen National Forest, w of Eagle Lake, Crater Mountain 2225 Comment
  UC1567400  Phleum pratense G. Schoolcraft 1989-7-18 1979 Lassen near Bucks Spring (s of Clarks Valley Road); near Buck's Spring 1874 Comment
  UC1776695  Phleum pratense G. Schoolcraft 1994-8-2 2407 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  UCD89650  Phleum pratense L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  CHSC6211  Phlox diffusa J. B. Fredonyer 1946-6-17 Lassen Mt. Fredonyer. 2133 Comment
  POM64961  Phlox diffusa subsp. diffusa Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  JEPS118284  Phlox douglasii 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
  UC1137715  Phlox douglasii subsp. rigida L. R. Short 1936-4-28 S- 332 Lassen Burgess Spring Experimental Range Lassen Forest 1737 Comment
  UC1124221  Phlox gracilis A. Simontacchi 1940-5-10 690 Lassen 7.3 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC23598  Phlox gracilis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek 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
  HSC17176  Phlox longifolia M. L. Stuart 1965-5-2 53 Lassen 35 mi. NE of Susanville Comment
  UC52648  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  RSA104310  Phlox speciosa subsp. occidentalis Verne Grant, Alva Grant 1956-5-17 9797 Lassen Just north of Milford on Highway 395 1311 Comment
  CHSC23551  Phlox stansburyi W. O. Baum 1971-6-28 20 Lassen W slope of Gallatin Peak. 2011 Comment
  CHSC71130  Phlox stansburyi Vernon H. Oswald; Lowell Ahart 1998-5-22 9114 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca 5 mi NNE of Doyle. 1402 Comment
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  RSA83065  Phlox stansburyi Verne Grant, Alva Grant 1947-5-5 7979 Lassen North of Honey Lake Valley Comment
  UCD118467  Phlox stansburyi Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. 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
  UC465863  Phoradendron densum Milo S. Baker 1900-7-6 Lassen s. side Dixey Mts. Comment
  RSA126929  Phragmites australis H. S. Yates 1936-8-11 6063 Lassen Near Red Rock. 1341 Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  SEINET10530755  Pinus jeffreyi Katherine L. Morris 1973-5-25 Morris 219 Lassen Collected 2.6 mi W of Susanville, on US 36, in an area of Pinus jeffreyi and Purshia. Comment
  SEINET10530766  Pinus lambertiana Katherine L. Morris 1973-5-25 Morris 225 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  RSA518540  Pinus ponderosa George K. Helmkamp 1990-10-4 12 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  CAS-BOT-BC227995  Plagiobothrys David D. Keck; J. Clausen 1935-6-24 3731 Lassen 10 miles S of Likely (Modoc County) 1464 Comment
  CHSC29914  Plagiobothrys cognatus Robin L. Ondricek 1978-7-5 85 Lassen Grassy area bordering ne edge of Mahogany Lake. 2057 Comment
  CHSC110891  Plagiobothrys cusickii Lowell 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
  CHSC112443  Plagiobothrys cusickii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18772 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
  CHSC115608  Plagiobothrys cusickii Lowell Ahart; John Dittes 2015-7-13 20305 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
  JEPS28658  Plagiobothrys hispidulus George W. Gillett 1957-7-21 860 Lassen 300 yd n trail summit (Juniper Lake-Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  CHSC110772  Plagiobothrys hispidus Dean Wm. Taylor 2012-7-18 21274 Lassen Pumice flat nestled in the cones about 2 miles South of the south end Poison Lake (along Highway 44). 1783 Comment
  RSA0001862  Plagiobothrys humifusa Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 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
  CAS-BOT-BC228462  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen Along edge of Moll Res. W of Ash Valley 1606 Comment
  HSC31353  Plagiobothrys mollis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19273 Lassen Harvey Valley near Cone Springs Comment
  UC1523740  Plagiobothrys mollis Gary Schoolcraft 1981-8-11 559 Lassen Silva Flat Reservoir 1706 Comment
  RSA495517  Plagiobothrys mollis Elaine Joyal, D. Mehlman 1988-6-27 1286 Lassen Poison Lake. 2000 Comment
  CHSC115564  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2015-7-13 20319 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
  UC1567370  Plagiobothrys stipitatus var. micranthus G. Schoolcraft 1989-7-24 1991 Lassen Said Valley Reservoir Said Valley 1630 Comment
  POM368959  Plagiobothrys tenellus Christopher Davidson 1975-6-7 2766 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA60317  Plagiobothrys tenellus E. K. Balls 1950-5-9 15950 Lassen 12 miles north of Doyle, Hwy 395. 1296 Comment
  UC1037205  Platanthera leucostachys Leo Whitney 1933-8-8 1562 Lassen ca 8 mi nw Eagle Lake (spring at bed of Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UC1037280  Platanthera leucostachys Leo Whitney 1934-7-25 1740 Lassen ca 7 to 8 mi sw Eagle Lake (Bridge Creek Camp, near Bridge Creek); Lassen National forest, Bridge Creek 1737 Comment
  CHSC4905  Plectritis macrocera Bill Wilson 1967-6-23 17 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 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
  JEPS36547  Pleiacanthus spinosus W. L. Jepson 1918-8-2 7790 Lassen Long Valley 1371 Comment
  RSA484154  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
  HSC10643  Poa bulbosa D. E. Anderson 1969-7-5 5000 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  JEPS107983  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes 2005-6-2 11927 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC1024881  Poa cusickii subsp. cusickii Leo Whitney 1935-5-26 3141 Lassen 10 mi e Adin (Ash Creek) Comment
  CAS-BOT-BC246864  Poa nervosa John Thomas Howell 1934-6-14 12170 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UCD91789  Poa palustris A. A. Beetle 1941-6-28 2798 Lassen 10 miles west of Chester. 1524 Comment
  RSA715619  Poa pratensis L. Ahart, John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UCD91978  Poa pratensis L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  CHSC106673  Poa secunda B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  SD34460  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 miles west of Chester, rte. 36, mountain meadow near small stream Comment
  SD34480  Poa secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester, mountain meadow 1524 Comment
  CAS-BOT-BC236250  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  CAS-BOT-BC236259  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 miles E of Westwood on road to Fredonyer Pass 1584 Comment
  CAS-BOT-BC247052  Poa secunda subsp. juncifolia Ralph K. Gierisch 1968-7-11 3352 Lassen Lassen National Forest, Harvey Valley - Dixie Spr. 1706 Comment
  CAS-BOT-BC251087  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49460 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1142936  Poa secunda subsp. juncifolia A. L. Hormay 1941-6-25 20 Lassen Burgess Spring; Lassen Nat'l Forest 1676 Comment
  UCD32661  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2057 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  UCD92396  Poa secunda subsp. juncifolia A. H. Shunk 1923-7-28 s.n. Lassen Madeline. Comment
  SEINET7854865  Poa secunda subsp. juncifolia G. Schoolcraft 1995-5-22 2489 Lassen East of Skedaddle Ranch. 1554 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
  UC1024841  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3213 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132878  Poa secunda subsp. secunda Robert W. Gardner 1939-6-28 G- 31 Lassen Little Harvey Valley; Halls Flat Quadrangle Comment
  UC1136990  Poa secunda subsp. secunda George A. Fischer and Irwin H. Johnson 1933-7-12 F 206 Lassen Grass Valley; Lassen Nat'l Forest 1699 Comment
  SEINET7873582  Poa secunda subsp. secunda J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch. Comment
  UC1136984  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Forest 1859 Comment
  UC1609361  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5669 Lassen ca. 5.4 mi. (air) n.w. Poison Lake (Halls Flat Rd. (33N18), 1.4 mi. s.-s.w. of Pittville Rd. (Lassen 111, 36N01), w. side of rd.) 1694 Comment
  NY963445  Polemonium micranthum A. Tiehm 1986-5-14 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill 1707 Comment
  OBI48165  Polemonium micranthum Rhonda Riggins 1989-4-27 1644 Lassen US 395, 14 mi N Litchfield, 21 mi S Ravendale 1311 Comment
  JEPS17614  Polemonium occidentale Rimo Bacigalupi 1955-7-20 5404 Lassen on grade 2.3 mi s Patterson Ranger Station ([and 0.8 mi s of Lassen-Modoc county line], meadowy spots along East Creek, southern end of the Warner Mountains); Modoc National Forest, Warner Mountains, East Creek 2011 Comment
  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
  SD131676  Polyctenium fremontii Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11703 Lassen 6.6 miles north of the Wendel Road on Highway 395 from Susanville to Alturas. 1349 Comment
  SEINET229584  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Hwy 395. 1609 Comment
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  NY661121  Polyctenium williamsiae B. Corbin 2002-6-4 1078 Lassen Mud Flat-south end, East side of Highway 395. 1347.2 Comment
  SEINET3035191 Image available Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  CHSC117618  Polygala subspinosa L. P. Janeway and B. Castro 2015-6-5 11765 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  UCD109689  Polygala subspinosa T. Wendt; E. Lott 1975-6-12 1031 Lassen 4.5 mi. E of Rte 395 on Smoke Creek Ranch Road, E. of Mud Flat. 1371 Comment
  UC507010  Polygonum George A. Fischer, Irwin H. Johnson 1933-7-12 F 192 Lassen Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley 1694 Comment
  UC1536797  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch Honey Lake Valley Comment
  JEPS28700  Polygonum amphibium var. stipulaceum George W. Gillett 1957-7-26 921 Lassen Butte Lake Lassen Volcanic National Park (in shallows near campground area) 1844 Comment
  NY652201  Polygonum amphibium var. stipulaceum G. Schoolcraft 1996-9-12 2571 Lassen In Willow Creek north of Susanville 1493.5 Comment
  HSC63947  Polygonum argyrocoleon Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  CHSC112447  Polygonum aviculare subsp. depressum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18735 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
  POM104627  Polygonum bistortoides Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1562677  Polygonum davisiae Barbara Ertter 1988-7-25 7863 Lassen ridge ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville); Diamond Mts. 2286 Comment
  CAS-BOT-BC414489  Polygonum douglasii Clare B. Hardham 1969-8-28 17432 A Lassen West of Janesville Comment
  UC1136177  Polygonum douglasii subsp. douglasii E. Sawyer 1935-6-27 215 Lassen Long Valley Sierraville Quadrangle Comment
  CHSC64889  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1995-6-19 6880 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. In a shallow wash. 1383 Comment
  UC1567355  Polygonum douglasii subsp. majus G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC 1554 Comment
  CHSC25902  Polygonum douglasii subsp. spergulariiforme K. R. Stern 1967-7-1 2467 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  JEPS46148  Polygonum douglasii subsp. spergulariiforme Duncan Dunning 1921-8-11 Lassen 3 mi s Antelope Mountain (sw of Eagle Lake); Martin Spring Comment
  RSA128554  Polygonum hydropiper Peter H. Raven 1954-9-2 8115 Lassen Bed of St. Helena Creek at Mirabel Park, 4.8 miles S of Middletown Comment
  UC1603209  Polygonum polygaloides J. Guardino 1993-6-9 281 B Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603212  Polygonum polygaloides J. Guardino 1993-5-22 171 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CAS-BOT-BC419858  Polygonum polygaloides subsp. confertiflorum John Thomas Howell 1973-7-10 49762 Lassen Near Westwood 1554 Comment
  CAS-BOT-BC419860  Polygonum polygaloides subsp. confertiflorum Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 757 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  UC1609321  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  CHSC4773  Polygonum polygaloides subsp. kelloggii R. Carter 1967-6-27 559 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  CHSC58507  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald 1992-7-3 5047 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Cameron Meadow, between the trail to Jakey L. and the trail to Horseshoe L. 1981 Comment
  UC773864  Polygonum polygaloides subsp. kelloggii L. R. Short and Wm. Gansberg 1936-6-8 S- 390 Lassen Burgess Spring Experimental Range Lassen <National> Forest 1743 Comment
  CHSC110775  Polygonum sawatchense subsp. oblivium Dean Wm. Taylor 2012-7-18 21277 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  UC1136188  Polygonum sawatchense subsp. sawatchense A. Simontacchi 1940-5-28 780 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  CDA22787  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. Comment
  JEPS120125  Polypogon monspeliensis Lowell Ahart, John Dittes 2012-7-9 18300 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA719889  Polypogon monspeliensis Michael A. Vincent, K. Levings 2006-7-29 12915 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  SEINET10661618  Polypogon monspeliensis Lowell Ahart, John Dittes 2005-6-2 Ahart 11967 Lassen T23N, R17E, southwest 1/4 Section 10. 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
  CHSC67067  Populus fremontii Willis Ball 1969-6-25 33 Lassen Found in Upper Murrer's Meadow. 1584 Comment
  UCD54545  Populus fremontii subsp. fremontii Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2729 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  SEINET10885945  Populus tremuloides Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 141 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 Comment
  JEPS7408  Porterella carnosula Leo Whitney 1933-8-21 Lassen 25 mi wnw Eagle Lake (near Hall's Flat); Lassen National Forest, wnw of Eagle Lake Comment
  UC803937  Porterella carnosula G. L. Stebbins Jr. 1949-8-6 4002 Lassen edge Feather Lake (between Susanville and McArthur Mud Flats) 1676 Comment
  JEPS108444  Porterella carnosula Lisa Schultheis 1995-6-27 229 -95 Lassen W side of Rt. 395, 3.5 mi S of Madeline. Comment
  SEINET12329667  Porterella carnosula N. H. Holmgren, Holmgren, P. K. 1980-1 9463 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi.) S of Madeline, T36N, R13E, S9 1620 Comment
  JEPS97315  Potamogeton amplifolius Vernon H. Oswald 1995-8-26 7218 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  CAS-BOT-BC452093  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  UCD150403  Potamogeton crispus William Anderson 1963-7-9 s.n. Lassen Honey Lake Refuge. Comment
  CHSC4804  Potamogeton filiformis R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CHSC59158  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1992-7-16 5118 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. In streamlets in the meadow. 1719 Comment
  UC1100075  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8243 Lassen e end of Tule Lake Comment
  UC1099900  Potamogeton pusillus var. pusillus Verne Grant, Irving Schneider 1947-7-31 8212 Lassen Madeline Plain, ne quarter of George Williams section 19 Madeline Plain 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
  UC60851  Potamogeton striatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3357 Lassen marsh near Amedee; Honey Lake Valley Comment
  JEPS100240  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  OBI77552  Potentilla biennis Anthony Baniaga 2011-7-23 460 Lassen Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4 1700 Comment
  UCD113701  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  POM172482  Potentilla fruticosa Franklin Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CAS-BOT-BC141633  Potentilla gracilis var. elmeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49452 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  CHSC6256  Potentilla gracilis var. fastigiata V. Holt 1946-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  UC773876  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spring Experiment Range Lassen National Forest 1767 Comment
  CAS-BOT-BC540362  Potentilla gracilis var. fastigiata John Thomas Howell 1934-7-6 12440 Lassen Harvey Valley Comment
  CHSC89732  Potentilla millefolia L. P. Janeway 2004-6-26 8160 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UCD113957  Potentilla rivalis G. Schoolcraft 2000-6-13 2902 Lassen Susanville. Cold Spring Valley. 1645 Comment
  NY833598  Potentilla rivalis var. millegrana G. Schoolcraft 2000-6-13 2902 Lassen Cold Spring Valley 1646 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
  CHSC117197  Poterium sanguisorba Lowell Ahart; John Dittes 2016-6-7 20998 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
  CHSC30595  Prunella vulgaris Marc Held 1972-7-11 40 Lassen Collected approx. 1 mile north of Gallatin house. Comment
  CAS-BOT-BC159776  Prunus andersonii Ella Dales Cantelow 1938-10-23 2192 Lassen N. of Doyle, Honey Lake in view Comment
  CHSC106567  Prunus andersonii K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  CHSC1581  Prunus andersonii D. Heinz 1962-4-23 Lassen Hallelujah Jct. at State line. 1371 Comment
  JEPS27652  Prunus emarginata W. L. Jepson 1918-8-2 7788 Lassen Long Valley 1371 Comment
  CAS-BOT-BC154772  Prunus virginiana var. demissa Alice Eastwood; John Thomas Howell 1940-6-11 7994 Lassen Nubieber Comment
  CHSC64853  Prunus virginiana var. demissa Vernon H. Oswald 1995-6-26 6931 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 9.9 mi w of Madeline, ca. 0.5 mi w of the reservoir at Fleming Sheep Camp and along the stream coming from the same. 1609 Comment
  CHSC7721  Prunus virginiana var. demissa Beverley J. Wise 1969-5-18 192 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On canyon wall. 1554 Comment
  CAS-BOT-BC361666  Pseudognaphalium thermale John Thomas Howell; Gordon H. True 1973-7-31 50022 Lassen On road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  CAS-BOT-BC239801  Pseudoroegneria spicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50693 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC239803  Pseudoroegneria spicata Doris Kildale Gillespie 1930-5-12 9328 Lassen 2 miles north of Susanville on road to Alturas Comment
  UCD91491  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3018 Lassen On east side of Horse Lake. Comment
  UCD91513  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51997 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  UC60834  Pseudoroegneria spicata subsp. spicata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Amedee; Honey Lake Valley, Amedee Comment
  UC718009  Pseudoroegneria spicata subsp. spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada 1341 Comment
  CHSC67079  Pseudostellaria jamesiana Jeanne Boze 1981-6-13 116 Lassen On northeast slope of Galletin Peak. 1981 Comment
  CHSC117522  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes 2016-7-13 21110 Lassen Strand of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miless(air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC30610  Psilocarphus brevissimus var. brevissimus L. Maslin 1975-7-1 5 Lassen Lower Dry Lake. 1828 Comment
  CHSC64868  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6897 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  JEPS119651  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2012-7-9 18290 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  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
  JEPS124656 Image available Psilocarphus brevissimus var. brevissimus Laurel Loeblich 1964-7-1 66 Lassen Collected 17.6 mi. north of Susanville on highway 139 in ditch on west side of road about 2 meters from road. Comment
  JEPS109942  Psoralidium lanceolatum Dean W. Taylor 2004-5-11 19063 Lassen Calneva Lake; southern end of the lakebed. 1219 Comment
  CAS-BOT-BC72539  Pteridium aquilinum John Thomas Howell; Gordon H. True 1973-7-31 50058 Lassen on road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UC1137729  Pterospora andromedea L. R. Short and D. Gish 1936-7-15 S- 488 Lassen Burgess Spr. Exp. Range Lassen National Forest 1813 Comment
  UC1562803  Pterospora andromedea Barbara Ertter 1987-7-25 7319 Lassen Hwy 44 ca 1 mi E of Shasta Co. line 1645 Comment
  CAS-BOT-BC239824  Puccinellia lemmonii James Jokerst 1983-7-24 1884 Lassen Near Madeline Plains 1614 Comment
  CHSC112789  Puccinellia lemmonii Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18788 Lassen Depression, 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. 1007 Comment
  UCD93431  Puccinellia nuttalliana P. B. Kennedy 1923-6-1 s.n. Lassen edge of Honey Lake. Comment
  CDA32668  Puccinellia nuttalliana M. D. Collins Jun 1923 Lassen Edge of Honey Lake 0 Comment
  CDA26233  Purshia tridentata S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  SEINET10483496  Purshia tridentata Mary Susan Taylor 1982-5-7 Taylor 4431 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  SEINET3394464  Purshia tridentata E. D. McArthur 1982-1 EDM- 1356 Lassen NW of Janesville at Jct of crossroads 205 & 219 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
  HSC19588  Purshia tridentata var. tridentata K. P. St. John 1965-5-6 26 Lassen 8 mi. S of Ravendale on Hwy. 395 Comment
  UC12421  Purshia tridentata var. tridentata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC12841  Purshia tridentata var. tridentata Mrs. R. M. Austin and Bruce Jun 1898 2345 Lassen high mts. Comment
  JEPS28661  Pyrola asarifolia George W. Gillett 1957-7-22 880 Lassen Snag Lake, South shore near Campsite 1850 Comment
  CAS-BOT-BC466053  Pyrola picta A. G. Brenneis 1928-7-3 11 Lassen Lassen Forest, Jesson Valley 1463 Comment
  UC1609363  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald and Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd (Lassen 111, 36N01) 3.0 mi n Hwy 44 (ne of Poison Lake) 1709 Comment
  UC35837  Pyrrocoma carthamoides var. cusickii M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  UC35843  Pyrrocoma hirta var. lanulosa M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  CDA8517  Pyrrocoma lanceolata var. lanceolata T. C. Fuller 1980-8-6 20315 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  SD108109  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Highway 395 Comment
  JEPS93954  Pyrrocoma racemosa var. paniculata Vernon H. Oswald 1998-9-14 9625 Lassen Windy Hollow on the w side of Highway 44 ca. 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44 1737 Comment
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Jun 3 2007
  LA205323  Quercus kelloggii Carl Epling; William Robison 1935-7-15 sn Lassen near Honey Lake Comment
  UCD46633  Quercus kelloggii John Thomas Howell; Gordon H. True 1973-5-12 49159 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  UC1126215  Ranunculus alismifolius var. alismifolius A. Simontacchi 1940-5-13 705 Lassen 6.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC66258  Ranunculus aquatilis var. diffusus Vernon H. Oswald; Lowell Ahart 1996-6-24 7877 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  CAS-BOT-BC379023  Ranunculus aquatilis var. diffusus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16347 Lassen about 10 mi E of Susanville Comment
  CAS-BOT-BC379025  Ranunculus aquatilis var. diffusus M. S. Taylor 1982-6-12 4647 Lassen aquatic in still pond S side of Hwy 36, N side of west fork Susan River, at jct with Willow Creek Rd., ca. 8 mi W of Susanville Comment
  JEPS77523  Ranunculus aquatilis var. hispidulus L. R. Heckard, T. I. Chuang and R. Bacigalupi 1978-7-20 4893 Lassen junction of Blue Lake turn-off with Likely-Patterson Guard Station road; Warner Mts. 1889 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
  CHSC5020  Ranunculus californicus L. G. Bennett 1967-6-24 44 Lassen North end of Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC59807  Ranunculus cymbalaria var. saximontanus Mary Meyer; Teresa Prendusi 1980-5-8 Lassen Near the creek in Balls Canyon. 1341 Comment
  UC1191440  Ranunculus flammula Verne Grant and Irving Schneider 1947-8-24 8267 Lassen Blue Lake; nw shore, n Lassen Co. Comment
  OBI75893  Ranunculus flammula Anthony Baniaga 2011-8-17 504 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1978 Comment
  UC773872  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spring Experiment Range Lassen National Forest 1737 Comment
  CHSC108009  Ranunculus macounii Lowell Ahart; John Dittes 2011-6-21 17536 Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley. 1264 Comment
  SEINET10535979  Ranunculus occidentalis Mary Merello 1993-6-28 Merello 749 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
  NY494904  Ranunculus sceleratus var. multifidus G. Schoolcraft 1991-6-27 2174 Lassen North of Johnstnville Road, 3 miles east of Susanville 1280.2 Comment
  JEPS28453  Ranunculus uncinatus George W. Gillett 1957-7-28 926 Lassen on trail to Widow Lake 100 yd above junction with Snag Lake Trail; Lassen Volcanic National Park, Butte Lake 1859 Comment
  CHSC44887  Ratibida columnifera Lowell Ahart; John Thomas Howell 1974-7-9 513 Lassen Near the south-west side of Eagle Lake. 1584 Comment
  UC870780  Rhamnus californica C. L. Hitchcock 1940-5-26 6619 Lassen ca 12 mi n Fall River Mills; Fall River 1371 Comment
  PASA2371  Rhus ovata M. Stason 1931-3-21 Lassen Near Roscoe Comment
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Dec 17 2014
  CAS-BOT-BC93392  Ribes cereum Milo S. Baker 1894-6-1 s.n. Lassen South side Dixey Mountains. Comment
  CAS-BOT-BC93393  Ribes cereum Carl B. Wolf 1929-9-1 3780 Lassen Mount Lassen National Park, between grassy and Snag Lakes. Comment
  UCR17281  Ribes cereum Frank C. Vasek 1975-7-11 750711- 30 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC60742  Ribes cereum var. cereum Vernon H. Oswald; Lowell Ahart 1993-6-3 5487 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville. 1688 Comment
  CHSC84861  Ribes cereum var. cereum L. P. Janeway; B. Castro 2003-10-5 8003 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  JEPS94487 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1997-5-27 8515 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir on Forest Route 38N04 1682 Comment
  CAS-BOT-BC169008  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  UCR55663  Ribes hudsonianum var. petiolare G. R. Ballmer 1988-7-19 s.n. Lassen Blue Lake, extreme S end of Modoc National Forest, c. 3 mi (airline) south of Modoc county line 1860 Comment
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Jul 20 2010
  JEPS49414  Ribes inerme var. inerme Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  UC726449  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mi e Fredonyer Pass 1706 Comment
  RSA0022881  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  SEINET10482949  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 285 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 Comment
  SEINET10482959  Ribes velutinum Mary Susan Taylor 1974-1 Taylor 288 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC23568  Ribes viscosissimum W. O. Baum 1971-6-21 32 Lassen E slope on fire trail on Gallatin Peak. 1920 Comment
  CAS-BOT-BC363012  Rigiopappus leptocladus Doris Kildale Gillespie 1930-5-12 9341 Lassen 2 miles north of Susanville on road to Alturas Comment
  CHSC106090  Rigiopappus leptocladus Lowell Ahart; John Dittes 2010-7-31 16980 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS30485  Rigiopappus leptocladus Peter H. Raven and Otto T. Solbrig 1958-6-17 13302 Lassen along United States Highway 395 8.0 mi n Madeline Comment
  JEPS95976  Rorippa curvisiliqua Vernon H. Oswald and L. Ahart 1999-6-9 9758 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass: T29N R10E NW1/4 Sect. 22, 5400 ft elevation, mixed coniferous forest 1645 Comment
  CHSC101064  Rorippa curvisiliqua var. orientalis John Dittes 2008-5-22 1527 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek. 482 Comment
  CHSC112392  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18725 Lassen Drainage filled with dirt form construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC71385  Rorippa curvisiliqua var. orientalis V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9260 Lassen Moll Reservoir in Ash Valley southeast of Adin. Along the edge of the reservoir. 1615 Comment
  CHSC13796  Rorippa nasturtium-aquaticum Cathy Crittenden 1970-7-8 31 Lassen Lower Murrer's Meadow; by Willow Creek. 1463 Comment
  UC1126740  Rorippa nasturtium-aquaticum Robert W. Gardner 1937-6-16 G- 15 Lassen Burgess Spring Experimental Range Halls Flat Quad., Burgess Spring Experimental Range Comment
  UC1191531  Rorippa sinuata Verne Grant and Irving Schneider 1947-8-1 8226 Lassen irrigation ditch running s.w. into State Fish & Game nesting area on s.w. end of Section 19 Madeline Plain Comment
  CHSC6260  Rosa woodsii subsp. ultramontana W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1584 Comment
  CAS-BOT-BC148258  Rosa woodsii var. ultramontana Louella Bass 1973-5-29 EV- 68 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  UC1128616  Rosa woodsii var. ultramontana A. Simontacchi 1940-7-3 920 Lassen 3.5 mi WSW of Harvey Mountain Lookout 1828 Comment
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1070543  Rumex H. S. Yates 1936-8-11 6057 Lassen near Red Rock; Sierraville Quad. 1341 Comment
  CHSC27648  Rumex acetosella George Deniso 1978-7-16 74 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  CHSC93668  Rumex crispus Lowell Ahart; John Dittes 2005-6-2 11971 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
  CHSC66730  Rumex occidentalis Vernon H. Oswald; Lowell Ahart 1996-8-1 8117 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  CAS-BOT-BC109328  Rumex paucifolius Geo. A. Fisher 1928-6-23 32 Lassen Halls Flat. 1615 Comment
  UC1136917  Rumex paucifolius L. R. Short and B. Gish 1936-6-8 S- 387 Lassen Burgess Spr. Exp. Range Lassen Forest 1743 Comment
  UC1520656  Rumex salicifolius var. lacustris Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9475 Lassen 0.7 mi w (1.1 km w) U. S. Hwy 395 (a valley road, from a turnoff 6.4 mi (10.3 km) s of Madeline); Madeline Plains 1615 Comment
  UC6952 Image available Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake; ; Silver Lake, Lassen Co. Comment
  SDSU9722  Rumex salicifolius var. lacustris D. F. Howe 1966-8-25 Lassen 41.0 Miles s of Alturas on #3954.2 miles N of juction with #12, on #1. 1676 Comment
  CHSC65318  Rumex salicifolius var. salicifolius Vernon H. Oswald; Lowell Ahart 1995-8-14 7188 Lassen Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy.395, N of Susanville. 1645 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
  UC1594643  Rumex salicifolius var. triangulivalvis Vernon H. Oswald and Lowell Ahart 1992-7-16 5123 Lassen 1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on the logging road paralleling the e side of Bridge Creek, swamp on Bridge Creek); Bridge Creek 1719 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
  CAS-BOT-BC434261  Rumex triangulivalvis John Thomas Howell 1975-7-23 51404 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  CAS-BOT-BC434263  Rumex triangulivalvis Annie M. Alexander; Louise Kellogg 1946-8-11 5153 Lassen Northwest end Grasshopper Valley. Comment
  UCD150405  Rumex venosus William Anderson 1963-6-2 s.n. Lassen Honey Lake Refuge. Comment
  UC803885  Sagittaria cuneata G. L. Stebbins Jr. 1949-8-6 4004 Lassen edge Feather Lake (betw. Susanville and McArthur); edge of Feather Lake 1676 Comment
  UCD149941  Sagittaria latifolia William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  POM362636  Salix bonplandiana Christopher Davidson 1975-6-6 2725 Lassen Ca 3.5 miles on road to Thompson Peak. Branching E of rd 204 ca 7.5 miles SW of Susanville. (Rd 204 follows Gold Run Cr.) 1677 Comment
  CHSC66403  Salix exigua Vernon H. Oswald; Lowell Ahart 1996-6-17 7784 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. 1432 Comment
  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
  JEPS88212  Salix lasiandra var. lasiandra Vernon H. Oswald and Lowell Ahart 1996-6-17 7790 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau 1402 Comment
  CAS-BOT-BC106964  Salix lasiolepis G. Schoolcraft 1999-5-7 2820 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  POM209469  Salix lemmonii Carleton R. Ball 1932-7-24 687 Lassen Mt. Lassen Highway. 0.6 mile N of Sulphur Works Checking Station. Lassen Volcanic National Park. 1982 Comment
  RSA715977  Salix lucida subsp. lasiandra L. Ahart, John Dittes 2005-6-2 11925 Lassen Along a small ditch. Along the road. Near the Anderson Ranch home. Long Valey. About 4.75 miles (air) N of the intersection of Scott Rd and Hwy 70. 6.2 miles (air) NW of Hallelujah Jct. 1460 Comment
  SEINET10952234  Salix lucida subsp. lasiandra Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 139 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC126174  Salix scouleriana Hans Leschke 1964-9-3 1891 Lassen Cinder Cone, Lassen Volcanic Nat. Park Comment
  CHSC66405  Salix scouleriana Vernon H. Oswald; Lowell Ahart 1996-6-17 7770 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Ca. 2 mi E of the 7 mile post. 1432 Comment
  NY540086  Salsola tragus G. Schoolcraft 1982-9-20 917 Lassen West of Wendell 1219.2 Comment
  UC104453  Salvia aethiopis T. Brandegee 1892-6-30 Lassen streets of Susanville Comment
  CDA34340  Salvia aethiopis Anonymous 1987-6-18 Lassen New Pine Creek, along Hwy 395 north into Oregon. 0 Comment
  CHSC7680  Salvia dorrii Beverly J. Wise 1969-5-16 Lassen 24 mi. east of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  SEINET8018246  Salvia dorrii var. pilosa J. A. Young 1982-6-7 s.n. Lassen NE Lassen County, Redlands. 1676 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
  CHSC60347  Sambucus racemosa var. microbotrys Mary Ann Showers 1992-6-13 2557 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  UC1924239  Sanguisorba annua Debra Valov 2004-6-8 2004245 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  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
  RSA79261  Sarcobatus vermiculatus E. K. Balls 1952-10-10 18136 Lassen 5.2 miles W of Standish, Hwy 395, Susanville to Alturas. 1250 Comment
  UC1127669  Saxifraga nidifica var. nidifica A. Simontacchi 1940-5-14 726 Lassen 4.1 mi wnw of Aspen Well (Lassen National Forest); Lassen National Forest 1767 Comment
  UC1542944  Saxifraga nidifica var. nidifica G. Schoolcraft 1987-4-29 1685 Lassen Lonkey Hill 1432 Comment
  UC1100770  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1947-7-9 13298 Lassen irrigation ditch 5 mi e Bieber; e of Bieber Comment
  UC1100879  Scirpus nevadensis Malcolm A. Nobs, S. Galen Smith 1949-7-22 1073 Lassen ne side Eagle Lake; ne side Eagle Lake Comment
  CHSC66422  Scribneria bolanderi Vernon H. Oswald; Lowell Ahart 1996-6-17 7804 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On a flat on the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  SDSU11023  Scrophularia lanceolata D. F. Howe 1962-8-2 3923 Lassen Warner Mtns, Modoc National Forest. 1829 Comment
  SEINET8020068  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CAS-BOT-BC214260  Scutellaria nana Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8591 Lassen Flats on the northwest side of Shaffer Mountain, 7.5 air miles north-northwest of Litchfield 1371 Comment
  CAS-BOT-BC214269  Scutellaria nana John Thomas Howell 1934-6-10 11879 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  HSC82251  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6010 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM252832  Scutellaria nana A. A. Heller 1938-6-23 15186 Lassen 1 mile south of Westwood. 1524 Comment
  RSA128297  Scutellaria nana Peter H. Raven, Otto T. Solbrig 1958-6-17 13270 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  SBBG125002  Scutellaria nana C. B. Hardham -Jun-2000 Lassen Gold Run Crk, S of Susanville 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
  RSA647520  Secale cereale Marion P. Harthill 1972-6-16 788 Lassen Doyle 1372 Comment
  SEINET4891272  Secale cereale M. J. Williams 1974-7-26 74 -I-38 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  UC790980  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi s of Ravendale (Observation Peak); Observation Peak Comment
  UCD92555  Secale cereale D. Haskelle 2000-2-7 s.n. Lassen Doyle. Comment
  UCR244035  Secale cereale Jim Andre 1993-6-5 19705 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  CHSC20308  Senecio hydrophiloides S. Villard 1973-7-7 63 Lassen Meadow, off county dirt road, 5 mi from Red-Rock Lookout. 2133 Comment
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Apr 29 2013
  JEPS17740  Senecio hydrophiloides Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5413 Lassen 4.4 mi s Patterson Ranger Station (in meadow e edge of Long Valley, s end of the Warner Mountains); Modoc National Forest, Warner Mountains, Long Valley 2057 Comment
  OBI75864  Senecio hydrophilus Anthony Baniaga 2011-9-8 511 Lassen Lassen Natl Forest. Caribou Wilderness; Long Lake, W shore peninsula. Red Cinder quad T30N R7E sec 16 SW of NW 2103 Comment
  RSA0012449  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen east of Westwood, the margin bordered with sagebrush, where a tongue of Upper Sonoran protrudes into the Transition Life Zone. Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  SEINET10799218  Senecio integerrimus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17788 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  UC1776693  Senecio integerrimus var. exaltatus G. Schoolcraft 1994-7-7 2368 Lassen About 1 mile west of Boot Lake 219 Comment
  UC1924243  Senecio integerrimus var. exaltatus Debra Valov 2004-6-8 2004241 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC364153  Senecio serra B. Bartholomew; B. Anderson 1988-7-22 4496 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  CDA8680  Senecio serra T. C. Fuller 1959-7-7 4726 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  JEPS79212  Senecio serra var. serra L. R. Heckard with R. C. Bacigalupi 1980-6-12 5253 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  CHSC26149  Senecio triangularis Detzer; Sacks 1977-7-24 1 Lassen Along streambank, ca. 3 mi se of Milford, .5 mi. se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  RSA518886  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  JEPS117478  Setaria viridis Lowell Ahart, John Dittes 2010-8-31 17139 Lassen On the east side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley 1276 Comment
  CDA36706  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen Along a bench on the south slope of the Rush Creek Drainage, 0.3 km south of the Smoke Creek Ranch Road, 2 km west of the stateline. 0 Comment
  CHSC77230  Sibbaldia procumbens G. Schoolcraft 1997-8-6 2663 Lassen Diamond Mtn. 2316 Comment
  UC1121981  Sidalcea asprella subsp. nana A. Simontacchi 1940-6-3 793 Lassen 8.2 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CHSC105238  Sidalcea glaucescens Lowell Ahart; John Dittes 2010-7-31 17016 Lassen On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CAS-BOT-BC205782  Sidalcea oregana Alice Eastwood; John Thomas Howell 1940-6-11 7999 Lassen Bieber Comment
  UC506975  Sidalcea oregana subsp. oregana George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Lassen Forest , Patterson Flat 1737 Comment
  CHSC100901  Sidalcea oregana subsp. spicata R. A. Schlising; Peter Metropulos 1974-7-22 3154 Lassen South of Eagle Lake at Colman Lake. Comment
  JEPS67272  Sidalcea oregana subsp. spicata Brown and Wieslander 1922-7-18 65 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  RSA339988  Sidalcea oregana var. maxima Noel Holmgren, Patricia K. Holmgren 1980-7-3 9479 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) airline distance northwest of Termo. 1620 Comment
  CAS-BOT-BC384311  Silene bernardina Clare B. Hardham 1971-8-22 18369 Lassen Diamond Mountain 2133 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
  POM100924  Silene lemmonii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC1137882  Silene lemmonii H. P. Hagge 1929-9-17 36 Lassen Logan Mtn. Eagle Lake Quad., Logan Mtn. 1828 Comment
  CHSC36188  Silene nuda M. S. Taylor 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass. 1432 Comment
  JEPS87996  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ca 1.5 mi e Diamond Peak (ca 10 airmi due s of Susanville, ridge of Diamond Mts.); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  UC120167  Silene nuda unknown 1892-6-24 Lassen Honey Lake Comment
  CAS-BOT-BC389544  Silene nuda Paul F. Covel 1937-7-19 755 Lassen Westwood Airport Comment
  CAS-BOT-BC75079  Sisymbrium altissimum Louella Bass 1973-5-25 46 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC111252  Sisymbrium altissimum L. P. Janeway; B. Castro 2012-7-2 10935 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  RSA123140  Sisyrinchium bellum L. R. Short, William Gansberg 1936-6-11 S- 430 Lassen Burgess Spr. Exp. Range 1731 Comment
  UC1542917  Solanum triflorum G. Schoolcraft 1987-9-1 1774 Lassen Ash Valley, along Ash Valley road Ash Valley 1548 Comment
  CAS-BOT-BC365368  Solidago elongata Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  JEPS103171  Solidago elongata G. Schoolcraft 1997-8-19 2697 Lassen Susan Rvr. Canyon W. of Susanville 1371 Comment
  CHSC92962  Solidago velutina subsp. californica L. P. Janeway 2005-8-27 8523 Lassen High Cascade Range. Along Road 22, 11.3 road km east of Little Valley; above Davis Creek. 1460 Comment
  UC1192245  Sonchus asper Verne Grant and Irving Schneider 1947-7-30 8190 Lassen s point w embayment Tule Lake; s point of w embayment Tule Lake Comment
  UC1583971  Sonchus asper G. Schoolcraft 1990-7-31 2117 Lassen along Hwy 299 between Bieber and Nubieber 1249 Comment
  HSC95263  Sparganium emersum Gordon Leppig, J. Cromwell 1997-7-27 626 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  NY482319  Spergularia diandra G. Schoolcraft 1998-6-8 2734 Lassen N. base of Ft. Sage Mtns. 1249.7 Comment
  CAS-BOT-BC390560  Spergularia rubra John Thomas Howell; Gordon H. True 1973-8-1 50245 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  UC2042785  Sphaeromeria cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7192 Lassen Skeedaddle Mountains on NE side of Honey Lake, on S side of Hot Springs. Comment
  CHSC93240  Sphaeromeria potentilloides var. potentilloides John Dittes; Scott Chamberlain 2004-6-28 1013 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-miles east of Plumas County line; meadow. 1445 Comment
  UCD136228  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 1645 Comment
  HSC95180  Spiranthes porrifolia Gordon Leppig, J. Cromwell 1997-7-27 603 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC41843  Stachys ajugoides var. rigida P. V. Caldwell 1972-7-8 262 Lassen Eagle Lake. 1 mile from the forest road toward Papoose Meadows on Papoose Creek. Comment
  JEPS63054  Stachys ajugoides var. rigida Brown and Wieslander ca. 1914 57 Lassen near Eagle Lake; Martin Sprs. Comment
  CHSC68859  Stellaria crispa Vernon Oswald; Lowell Ahart 1997-6-24 8610 Lassen South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  UCD99328  Stellaria longipes subsp. longipes Ratliff 1966-7-8 1 Lassen Harvey Valley Allot. - Plot 49. 1706 Comment
  CHSC96723  Stellaria longipes var. longipes Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 544 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  JEPS51139  Stellaria longipes var. longipes Brown and Wieslander 1922-7-18 52 Lassen Martin Springs; Eagle Lake Comment
  POM42274  Stenotus acaulis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 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
  UC768667  Stephanomeria exigua subsp. coronaria Robert F. Hoover 1940-10-1 4651 Lassen Johnstonville Comment
  CHSC23504  Stephanomeria tenuifolia Wayne O. Baum 1971-7-19 71 -76 Lassen E. slope of Gallatin Peak. 2072 Comment
  CHSC29899  Stephanomeria tenuifolia Robin L. Ondricek 1978-8-2 110 Lassen On top of ridge se of Eagle Lake Field Station. 1609 Comment
  UCR119113  Stipa elmeri Beecher Crampton 1954-7-5 2064 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  HSC22876  Stipa hymenoides John Pratt 1970-6-14 15 Lassen East of Janesville Comment
  JEPS126469  Stipa thurberiana Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -039 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  SEINET8512762  Stipa thurberiana A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1093 Lassen Costantia Allotment. Highway 395 North into California, then right on paved entrance road before Red Rock Road and red rock formation, follow road right (South), then left (East) at top of first hill, go in roughly 0.5 miles, population is along roadside 1461 Comment
  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
  UCD149959  Stuckenia striata William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  CHSC99142  Swertia albicaulis var. albicaulis Lowell Ahart; John Dittes 2008-6-19 14881 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  RSA0037006  Swertia albicaulis var. albicaulis Lowell A. Ahart, John Dittes 2008-6-19 14881 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
  CHSC27669  Swer