Search Results — 2000 specimen records retrieved (1598 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)
 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA19020  Abies concolor Mark Lubinski 2000-10-12 PDR 1103214 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36, ~5 mi W of Susanville. 0 Comment
  CHSC84856  Abies concolor L. P. Janeway; B. Castro 2003-10-5 8002 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  CDA18380  Acer negundo G. D. Barbe 1978-7-11 2400 Lassen Madeline Plains; Madeline Plains, West Side Rd. W of Termo. 1615 Comment
  CAS-BOT-BC334175  Acer negundo var. californicum J. T. Howell 1975-7-23 s.n. Lassen Susanville, in park 1295 Comment
  UC506997  Achillea millefolium George A. Fisher and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley; Lassen Natl. Forest Comment
  CAS-BOT-BC260404  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near E side of saddle ca 0.8 mile NE of Meadowview Peak 1981 Comment
  CAS-BOT-BC260405  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  CHSC60791  Achnatherum hymenoides Vernon H. Oswald; Lowell Ahart 1993-6-14 5544 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89) 1566 Comment
  CHSC7697  Achnatherum hymenoides Beverley J. Wise 1969-5-16 134 Lassen 18 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd 215. 1493 Comment
  UC1131573  Achnatherum hymenoides H. S. Yates 1936-8-11 6076 Lassen near Johnstonville; Susanville Quadrangle Comment
  UC1131588  Achnatherum hymenoides E. Sawyer 1935-6-27 232 Lassen Long Valley Sierraville Quadrangle Comment
  UCD50358  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  UC1024755  Achnatherum lemmonii Leo Whitney 1933-7-15 2297 Lassen 25 mi w of upper end of Eagle Lake (Hall's Flat); Lassen National Forest 1737 Comment
  UC40031  Achnatherum lemmonii M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  UCD18958  Achnatherum lemmonii Jack N. Reppert 1965-7-13 18 Lassen Lassen National Forest, Harvey Valley Allotment-Logan Springs. 1706 Comment
  UCD50593  Achnatherum lemmonii L. Whitney 1933-7-7 s.n. Lassen Halls Flat, Lassen County. 1737 Comment
  SEINET7593424 Image available Achnatherum occidentale John Thomas Howell 1934-1 12431 Lassen Hall's Flat Comment
  CAS-BOT-BC216451  Achnatherum occidentale subsp. californicum John Thomas Howell 1969-8-7 45884 Lassen Butte Lake, Lassen Park Comment
  CHSC109530  Achnatherum occidentale subsp. californicum B. Castro; L. P. Janeway 2003-10-5 1459 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail between Cone Lake and Triangle Lake, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  UC1024805  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-23 3288 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1037122  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-23 3296 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  CAS-BOT-BC218613  Achnatherum occidentale subsp. pubescens John Thomas Howell; Gordon H. True 1973-7-31 50033 Lassen On road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  UCD51211  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  UC593456  Achnatherum thurberianum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1744 Lassen gully on mountain above Red Rock 1420 Comment
  UCD51444  Achnatherum thurberianum R. Tofsrud 1947-7-1 223 Lassen Between Ravendale and Thermos. Comment
  CHSC27639  Acmispon americanus var. americanus George Deniso 1978-7-16 77 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  CHSC29950  Acmispon americanus var. americanus Robin L. Ondricek 1978-6-8 51 Lassen Murrers Upper Meadow, .6 mi E of inersection with main rd. to ELFS. 1554 Comment
  CHSC30681  Acmispon americanus var. americanus M. S. Taylor 1974-7-10 281 Lassen In meadow, ca. 0.5 mi e of Gallatin Beach, ca. 0.5 mi s of Eagle Lake, ca. 12 mi ne of Susanville. 1524 Comment
  CHSC30612  Acmispon denticulatus L. Maslin 1975-7-1 12 Lassen On the road to Lower Dry L. from Eagle Lake Field Station, 2 mi. ELFS. 1524 Comment
  CAS-BOT-BC412871  Aconogonon davisiae Brighton C. Cain 1925-8-25 127 Lassen Horse trail from summit of Mt. Lassen to Drakesbad, Mt. Lassen Volcanic National Park Comment
  CAS-BOT-BC412872  Aconogonon davisiae John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50667 Lassen NE. of Diamond Mt. 2255 Comment
  UCD51460  Aegilops cylindrica Andy Babcock 1981-6-10 s.n. Lassen Comment
  CHSC25082  Agastache parvifolia K. R. Stern 1967-6-30 2455 Lassen West Central side of Eagle Lake. 1554 Comment
  CHSC67060  Agastache parvifolia Willis Ball 1969-6-25 27 Lassen Found in Upper Murrer's Meadow. 1584 Comment
  JEPS126482  Agastache parvifolia Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -055 Lassen At Fredonyer Peak. Comment
  OBI48641  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen Grasshopper Valley, 39 mi N of Susanville 1524 Comment
  CHSC23525  Agastache urticifolia Wayne O. Baum 1971-7-14 71 -68 Lassen N slope of Gallatin Peak. 2011 Comment
  UC104571  Agastache urticifolia F. Stephens 1894-7-15 Lassen Madeline Divide Comment
  CAS-BOT-BC30239  Ageratina occidentalis Clare B. Hardham 1969-8-28 17433 Lassen West of Janesville Comment
  CHSC23487  Ageratina occidentalis Wayne O. Baum 1971-7-22 71 -59 Lassen E slope of Gallatin Peak. 2072 Comment
  UC1483833  Ageratina occidentalis G. Schoolcraft 1979-8-15 180 Lassen Tule Mountain area Tule Mountain 2042 Comment
  UC1567420  Agoseris glauca var. glauca G. Schoolcraft 1989-6-6 1902 Lassen n end Secret Valley ((w of Hwy 395)) 1350 Comment
  CHSC59071  Agoseris glauca var. monticola Vernon Oswald; Lowell Ahart 1992-8-25 5181 Lassen Lassen Volcanic National Park. Near Grassy Creek at the S end of Snag Lake, at the junction of Snag Lake-Butte Lake and Snag Lake-Horseshoe Lake trails. 1865 Comment
  JEPS100463  Agoseris grandiflora Dean W. Taylor 2001-6-28 17818 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  CHSC107994  Agoseris heterophylla Lowell Ahart; John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC66231  Agoseris heterophylla Vernon Oswald; Lowell Ahart 1996-6-24 7860 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
  JEPS88214  Agoseris heterophylla Vernon H. Oswald and Lowell Ahart 1996-6-24 7860 Lassen ca. 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow ca. 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC29359  Agoseris heterophylla var. heterophylla M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  JEPS93832  Agoseris parviflora Vernon H. Oswald and Lowell Ahart 1998-6-4 9142 Lassen south of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  CAS-BOT-BC13413  Agoseris retrorsa Louella Bass 1973-5-29 82 Lassen Elysian Valley 1325 Comment
  UC1562323  Agropyron cristatum Vernon H. Oswald and Lowell Ahart 1990-7-25 4396 Lassen 2.2 mi w of Highway 395 (intersection of Hwy 70 and Scott Road) 1463 Comment
  RSA129563  Agrostis exarata L. R. Short 1936-8-21 499 Lassen Burgess Spr. Exp. Range. 1799 Comment
  RSA299261  Agrostis exarata J. T. Howell, Gordon H. True 1973-8-1 50226 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville Comment
  JEPS28273  Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen near Snag Lake south shore (100 yards above lake); Lassen Volcanic National Park 1850 Comment
  UC1024658  Agrostis oregonensis Leo Whitney 1933-8-7 2194 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  CAS-BOT-BC138801  Agrostis scabra John Thomas Howell 1959-9-23 34882 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  UCD53299  Agrostis scabra L. Whitney 1933-8-15 s.n. Lassen Meadow near Sheepshead. Comment
  SEINET14163171  Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  POM313032  Alisma gramineum Malcolm A. Nobs, S. Galen Smith 1949-7-22 1074 Lassen Along Willow Creek, Willow Creek Valley, 10 miles north of Susanville Comment
  JEPS121269  Alisma lanceolatum Lowell Ahart 2013-7-22 18841 Lassen W margin of duck field, about 80 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  HSC2887  Alisma triviale R. G. Means 1962-7-5 73 Lassen 1 mi. SW of Bieber. 1250 Comment
  JEPS124713 Image available Alisma triviale P. Matteson 1968-7-9 86 Lassen 1.6 mi. N. of intersection of HWY 139 and Horse Lake Road. Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 Comment
  CAS-BOT-BC459568  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen 2 miles east of Fredonyer Summit on Highway #36, in the Arid Transition Life Zone. Comment
  CHSC71106  Allium anceps Vernon H. Oswald; Lowell Ahart 1998-5-22 9102 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
  JEPS94130  Allium anceps Vernon H. Oswald and Lowell Ahart 1998-5-22 9102 Lassen ca. 3 mi. n. Doyle (Hackstaff Rd. 1.0 mi. s. of Laver Crossing Rd. 0.2 mi. n. of Fort Sage Rd.) 1316 Comment
  SD6424  Allium anceps Mrs. R. M. Austin 1879-1 Lassen No further location information given on label. Comment
  UC3055  Allium anceps Mrs. C. C. Bruce June, 1898 Lassen Madeline Plains Comment
  SEINET10532611  Allium anceps Paul Gallian, David B. Dunn 1971-6-2 Gallian 516 Lassen 6 miles n of hallelujah jct. On u.s. Hwy. 395, In artemisia tridentata, pinyon Pine along high ridge and in sandy wash 1402 Comment
  SEINET3883805  Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Highway 395, 3.0 miles south of Ravendale.; 0 Comment
  CAS-BOT-BC135913  Allium atrorubens var. atrorubens Arnold Tiehm; Margaret Williams; Jan Nachlinger 1988-6-2 11702 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, west of the highway. 1386 Comment
  UC1567422  Allium atrorubens var. atrorubens G. Schoolcraft 1989-5-31 1888 Lassen slopes of Skedaddle Creek n Wendel Rd.; Skedaddle Creek 1402 Comment
  HSC69593  Allium campanulatum Gary Schoolcraft 1980-7-28 340 Lassen S of Blue Lake 2043 Comment
  SEINET3884275  Allium campanulatum Mary Merello, H. H. Schimdt; L. Woodruff 1993-6-27 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94.; 0 1700 Comment
  RSA504589  Allium lemmonii Bruce Bartholomew, B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 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
  POM110002  Allium platycaule Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC474075  Allium platycaule Clare B. Hardham 1971-7-22 s.n. Lassen Diamond Moutain 2346 Comment
  CDA40010  Allophyllum integrifolium T. C. Fuller 1963-7-15 10889 Lassen Road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  RSA537548  Alnus incana Barbara Ertter 1988-7-25 7868 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  NY526213  Alnus incana subsp. tenuifolia G. Schoolcraft 1982-8-18 887 Lassen Along Doyle Grade Road, west of Doyle 1554.5 Comment
  UC1594602  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  JEPS127218  Alopecurus carolinianus Lowell Ahart, John Dittes 2016-7-15 21214 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127279  Alopecurus carolinianus Lowell Ahart, John Dittes 2016-7-13 21142 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
  CDA43006  Alopecurus geniculatus L. Ahart, John Dittes 2008-6-2 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
Read comments Oct 5 2019
  UC1924262  Alyssum minus subsp. micranthum Debra Valov 2004-5-31 2004226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  RSA0056301  Alyssum minus var. micranthum Lowell Ahart 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 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
  UC766126  Amaranthus blitoides R. F. Hoover 1940-10-5 4662 Lassen Johnstonville Comment
  CHSC116090  Amaranthus californicus Lowell Ahart; John Dittes 2015-7-13 20317 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
  JEPS124370  Amaranthus californicus Lowell Ahart, John Dittes 2015-7-13 20317 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  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
  CAS-BOT-BC174355  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca. 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles east of Sierra Valley 1584 Comment
  CHSC65288  Ambrosia acanthicarpa Vernon Oswald; Lowell Ahart 1995-8-14 7191 Lassen Modoc Plateau. Horse Lake Rd. (Lasen536) 1.8 mi W of Hwy. 395, N of Susanville. 1645 Comment
  CHSC66845  Ambrosia acanthicarpa Vernon Oswald 1996-10-3 8298 Lassen North of Susanville on Horse Lake Road (Lassen 546) 3.6 mi E of Hwy. 139. Modoc Plateau. 1554 Comment
  RSA252462  Ambrosia acanthicarpa R. F. Thorne, C. W. Tilforth 1969-9-6 39266 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  RSA719708  Ambrosia acanthicarpa Michael A. Vincent, K. Levings 2006-7-29 12920 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  CHSC29918  Amelanchier alnifolia var. pumila Robin L. Ondricek 1978-5-25 26 Lassen .5 mi S of tunnel crossing on road to Eagle Lake Field Station. 1554 Comment
  UC12072  Amelanchier utahensis Mrs. R. M. Austin and Bruce Jun 1898 2338 Lassen Comment
  UC1924571  Amelanchier utahensis Debra Valov 2006-5-29 2006021 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CAS-BOT-BC28272  Amphiscirpus nevadensis John Thomas Howell 1934-7-8 12506 Lassen Spalding's, Eagle Lake Comment
  SEINET9183301  Amphiscirpus nevadensis R. R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CAS-BOT-BC222255  Amsinckia John Thomas Howell 1934-6-10 11870 Lassen Honey Lake Valley, 24 miles s. of Susanville Comment
  CAS-BOT-BC222254  Amsinckia John Thomas Howell 1934-6-16 12220 Lassen Big Valley, 4 miles ne. of Bieber Comment
  CHSC99501  Amsinckia menziesii Lowell Ahart; John Dittes 2008-6-20 14909 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS61105  Amsinckia menziesii var. menziesii W. L. Jepson 1918-8-2 7777 Lassen Beckwith Pass 1463 Comment
  SEINET12509727  Amsinckia tessellata F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  UC1167764  Amsinckia tessellata var. tessellata Peter H. Raven with Otto T. Solbrig 1958-6-17 13276 Lassen 19.0 mi s Ravendale (along US Hwy 395) Comment
  JEPS29744  Anisocoma acaulis Rimo Bacigalupi and L. R. Heckard 1962-5-29 8499 Lassen 2.7 mi n of Milford, along US Hwy 395 1219 Comment
  CAS-BOT-BC64112  Anisocoma acaulis G. Schoolcraft 1997-5-7 2586 Lassen Port Sage Mtns. n. of Indian Spring 1584 Comment
  CAS-BOT-BC63953  Antennaria argentea Clare B. Hardham 1969-8-28 17453 C. Lassen West of Janesville Comment
  POM39125  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 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
  CHSC68729  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1997-5-27 8505 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
  UC1266740  Antennaria flagellaris Gary Schoolcraft 1981-5-27 410 Lassen (on rocky gravelly site near Yellow Pine Forest) Hayden Hills 1737 Comment
  POM253190  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen About 3 miles south of Westwood on hiway 36. A tongue of Upper Sonoran extends into the Arid transition Life Zone here. Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  UC773953  Antennaria luzuloides L. R. Short and J. Warren 1936-6-23 S- 452 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1741 Comment
  CHSC92826  Antennaria luzuloides subsp. aberrans Lowell Ahart; John Dittes 2005-6-1 11862 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  CHSC54171  Antennaria luzuloides subsp. luzuloides Vernon H. Oswald 1991-5-28 4625 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  UCD128940  Antennaria rosea Beecher Crampton 1960-6-18 5712 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CHSC60713  Antennaria rosea subsp. confinis Vernon H. Oswald; Lowell Ahart 1993-6-14 5526 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
  JEPS114859  Apera interrupta Lowell Ahart, John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS120872  Apera interrupta Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18733 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
  CHSC4823  Apocynum androsaemifolium R. Carter 1967-7-21 624 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Dramond Mountains. Comment
  JEPS96088  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1996-6-17 7777 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, n. side of Hwy. 36 between trail and hwy. bridges spanning the Susan R.); Modoc Plateau 1432 Comment
  UCD21048  Apocynum androsaemifolium E. Bortiri 2002-7-19 WFC 84 Lassen Along Rd 35N08, about 8 miles North of Poison Lake and Hwy 44,. Comment
  CHSC93250  Apocynum cannabinum John Dittes; Scott Chamberlain 2004-6-28 1021 Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow. 1496 Comment
  JEPS95872  Apocynum cannabinum Vernon H. Oswald and L. Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395: T31N R15E NE1/4 Sect. 3, 4450 ft elevation, sagebrush scrub, volcanic rock substrate 1356 Comment
  SEINET7881828 Image available Apocynum pumilum Helen K. Sharsmith 1955-1 4516 Lassen Ponderosa Pine-Black Oak forest adjacent to Highway 89 north of Hat Creek Ranger Station, Lassen National Forest. Altitude ca. 3800 feet. 1158 Comment
  POM75751  Apocynum pumilum var. rhomboideum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CAS-BOT-BC392013  Aquilegia Clare B. Hardham 1969-8-28 17453 I Lassen Slope west of Janesville Comment
  CHSC30594  Aquilegia formosa Marc Held 1972-7-7 41 Lassen Collected on the roadside above Gallatin Beach. 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
  POM99591  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC12479  Aquilegia formosa var. truncata Carol Weld 1969-6-25 25 Lassen Murrer's Meadow. 1524 Comment
  CHSC4814  Aquilegia formosa var. truncata R. Carter 1967-7-29 573 Lassen Found in Murrer's meadow, W side where canal runs. 1584 Comment
  UC10185  Arabis holboellii var. retrofracta M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  NY119564  Arabis sparsiflora var. sparsiflora D. W. McNeal 1983-6-5 2842 Lassen Above co. rd. #201 above the N shore of Eagle Lake, 2.9 miles W of the jct. of Hwy. 139. Comment
  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-BC45899  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45903  Arctostaphylos nevadensis Mrs. E. C. Sutliffe 1927-6-1 s.n Lassen Drakesbad, Lassen Volcanic Park Comment
  CAS-BOT-BC45908  Arctostaphylos nevadensis M. S. Baker; Frank Nutting 1894-1-1 s.n Lassen Lassen Country Comment
  RSA46474  Arctostaphylos nevadensis Doris K. Kildale 1926-9-11 2764 Lassen Juniper Lake. 2055 Comment
  JEPS28438  Arenaria congesta var. congesta George W. Gillett 1957-7-29 945 Lassen Along trail between Butte Lake Snag Lake; Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC27516  Arenaria congesta var. simulans Amos Arthur Heller 1938-6-23 15198 Lassen 2 miles E of Fredonyer Pass 1645 Comment
  UC1924211  Arenaria congesta var. subcongesta Debra Valov 2004-6-9 2004272 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC852268  Arenaria congesta var. subcongesta A. A. Heller 1938-6-23 15198 Lassen e Fredonyer Pss 1645 Comment
  UC120411  Arenaria congesta var. suffrutescens T. S. Brandegee 1892-7-26 Lassen Milford Comment
  UCD95199  Argemone munita Verne Grant; Irving Schneider 1947-9-5 8367 Lassen northwest shore of Eagle Lake, by Sam Webb's place (Spaulding.) Comment
  SEINET12090189  Argemone munita Unknown 1977-1 14 Lassen ca .5 mi S of Highway 395, 2 mi W of Milford at Honey Lake Campground, Sec. 16, T27N, R13E 1268 Comment
  CAS-BOT-BC401790  Argemone munita subsp. rotundata P. Monnet 1913-7-1 945 Lassen Doyle 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
  CAS-BOT-BC401792  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3545 Lassen Hills north of Susanville Comment
  CHSC65290  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1995-8-14 7186 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  JEPS35881  Arnica chamissonis Leland S. Smith 1918-7-22 1007 Lassen Blue Lake Modoc National Forest, Warner Range (w end), Blue Lake 1874 Comment
  UC1142923  Arnica chamissonis A. L. Hormay 1941-6-23 8 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 Comment
  POM253188  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mile east of Fredonyer Pass on hwy 36 1707 Comment
  SEINET3082318 Image available Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen Yellow Pine Forest, 1 mile east of Fredonyer Pass, on State Highway #36. 1740 Comment
  JEPS118456  Arnica cordifolia var. cordifolia Lowell Ahart, John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CHSC5221  Arnica dealbata 1944-7-26 Lassen Juniper Lake. 2055 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
  UC747143  Artemisia arbuscula subsp. arbuscula G. Thomas Robbins 1945-10-18 2156 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  RSA0009935  Artemisia arbuscula subsp. arbuscula Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  SBBG95821  Artemisia cana G. K. Helmkamp 1990-9-23 A- 5 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  UC1479613  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 195 Lassen Painter Flat 1719 Comment
  UCD129274  Artemisia cana subsp. bolanderi Howard Leach Date Unknown s.n. Lassen Madeline Plains. Comment
  JEPS37007  Artemisia dracunculus W. L. Jepson 1918-8-3 7799 Lassen Honey Lake Valley 1219 Comment
  NY703664  Artemisia nova A. Tiehm 2003-9-11 14368 Lassen 2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  CHSC30627  Artemisia tridentata M. A. Dubin 1975-7-20 8 Lassen Eagle Lake Field Station by Turkey Roll Hill. 1569 Comment
  CHSC67056  Artemisia tridentata subsp. tridentata Willis Ball 1969-6-19 4 Lassen Found approx. 1/2 mile N of E.L.B.S. 1554 Comment
  CHSC76080  Artemisia tridentata subsp. tridentata Lowell Ahart; Vernon H. Oswald 1999-9-13 8202 Lassen On the west side of the dirt road and 1/4 mile south of the sign-in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  JEPS37009  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7818 Lassen near South Fork Peak 1645 Comment
  UC762002  Artemisia tridentata subsp. tridentata R. F. Hoover 1940-9-28 4639 Lassen Leavitt Comment
  SEINET230066  Artemisia tridentata subsp. vaseyana Leila M. Shultz, John S. Shultz 1985-6-23 8604 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  JEPS124871 Image available Asclepias speciosa Peter Schultz 1967-7-11 71 Lassen 1 mile south of Milford on U. S. 395. Comment
  CHSC92938  Aster campestris L. P. Janeway 2005-7-31 8514 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  SEINET10484167  Astragalus Mary Susan Taylor 1982-5-29 Taylor 4561 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  POM45145  Astragalus accidens var. hendersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC177440  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle 1402 Comment
  CAS-BOT-BC177441  Astragalus andersonii M. S. Taylor 1982-5-29 4561 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  CAS-BOT-BC177442  Astragalus andersonii Alice Eastwood; John Thomas Howell 1940-6-16 8332 Lassen Near Susanville Comment
  CHSC106586  Astragalus andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  SEINET10874238  Astragalus andersonii Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 861 Lassen Collected at jct of hwy 70 & 395 at arco station. Comment
  HSC61704  Astragalus anxius Thomas W. Nelson, Jane P. Nelson 1980-7-6 5988 Lassen In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin. 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
  NY797390  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1645.9 Comment
  CAS-BOT-BC178766  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. east of Madeline Plains. 1712 Comment
  CHSC118474  Astragalus canadensis var. brevidens Don Lepley 2016-9-17 6 /28/2015 Lassen Eagle Lake Ranger District. Southwest corner of Eagle Lake, roughly a half-mile northeast of entrance of Christie Campground, near end of rough road past Eagle Lake Resort. UTM 683577 x 4493277 1559 Comment
  RSA614427  Astragalus canadensis var. brevidens Richard Halse 1991-7-28 4247 Lassen along Hwy 139, NE end of Eagle Lake, 21 miles N of Susanville. 1558 Comment
  SEINET5323826  Astragalus canadensis var. brevidens G. Schoolcraft 1999-6-29 2845 Lassen Along road to Buckhorn Res. East of Madeline Plains 1713 Comment
  CDA26651  Astragalus curvicarpus T. C. Fuller 1965-6-3 13607 Lassen 1.3 miles west-northwest of Janesville. 0 Comment
  RSA111039  Astragalus curvicarpus R. C. Barneby 1949-6-11 11 Lassen Secret Valley, 18 miles S of R(illegible) Comment
  SEINET12162068  Astragalus curvicarpus K. R. Stern 1974-1 5816 Lassen 16.5 mi W of Madeline, on Madeline-Adin Rd. Likely Quadrangle, sec. 32, R11E T35N 1548 Comment
  UC1609459  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-7-8 5662 Lassen Pittville Rd. (Lassen 111,36N01) 1.9 mi n of Hwy 44 on the se edge Poison Lake; se edge Poison Lake 1709 Comment
  CAS-BOT-BC177846  Astragalus curvicarpus var. curvicarpus Ella Dales Cantelow 1941-5-22 3657 Lassen 3 1/2 mi. s. of Secret Valley, C.C.C. Camp U.S. Hy 395 Susanville to Alturas Comment
  CAS-BOT-BC182960  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi. s of Constantia 1402 Comment
  CHSC5279  Astragalus filipes L. Harman 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  JEPS125804  Astragalus filipes William Harnach 2010-6-8 1244 Lassen Honey Lake Valley, NE of Doyle, 2 miles west of the Nevada state line on Fort Sage Road. Comment
  NY658483  Astragalus filipes G. Schoolcraft 1982-6-22 747 Lassen Ft. Sage Mtns. 1767.8 Comment
  NY658507  Astragalus filipes G. Schoolcraft 1981-6-15 460 -B Lassen Ash Valley 1554.5 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
  UCD104697  Astragalus filipes Ellen Dean 2006-5-15 3061 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  UCD104699  Astragalus filipes Michael A. Vincent 1999-6-9 8579 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  UC84396  Astragalus gibbsii T. B. 1892-6-26 Lassen Milford Comment
  CDA26675  Astragalus gibbsii Taylor Jun 1938 Lassen Susanville. 0 Comment
  JEPS109851  Astragalus inversus Dean W. Taylor 2006-6-29 19560 Lassen Halls Flat; along County Road 111 3.6 miles N of Poison Station (siding)(ca. 12 air miles NE of Old Station) 1706 Comment
  RSA0006769  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 s.n. Lassen West of Susanville. Comment
  SEINET5325323  Astragalus iodanthus var. diaphanoides M. J. Williams, Gary Schoolcraft; Arnold Tiehm 1986-5-12 86- 23 -2 Lassen Smoke Creek Rd, E of Hwy 395, 1 mi W of Nevada-Calif. Boundary. 1341 Comment
  JEPS123847  Astragalus lemmonii Lowell Ahart, John Dittes 2015-7-14 20336 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  RSA109609  Astragalus lentiginosus var. chartaceus H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen West of Susanville 1311 Comment
  NY675585  Astragalus lentiginosus var. floribundus H. D. D. Ripley 1943-6-13 5678 Lassen North of Doyle 1265 Comment
  UC1609460  Astragalus lentiginosus var. lentiginosus Vernon H. Oswald and Lowell Ahart 1993-7-8 5663 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi n Hwy 44 (se edge Poison Lake); se edge Poison Lake 1709 Comment
  POM26311  Astragalus lentiginosus var. platyphyllidius Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  POM280735  Astragalus lentiginosus var. salinus Alice Eastwood, John T. Howell 1940-6-16 8335 Lassen Near Susanville. Comment
  RSA0059601  Astragalus lentiginosus var. salinus Lowell Ahart, John Dittes 2011-6-20 17510 Lassen Near edge of the Ash Valley Road, 3,210 feet south of the Ash Creek Campground, about 6.5 (air) southeast of Adin. 1511 Comment
  UC65741  Astragalus pulsiferae P. B. Kennedy 1901-6-10 Lassen R.R. Station Constantia (Constantia) Comment
  CAS-BOT-BC192854  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen East side of Beckwourth Pass 1493 Comment
  CAS-BOT-BC192855  Astragalus pulsiferae var. pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen East slope of Shaffer Mtn. Comment
  CHSC98311  Astragalus pulsiferae var. pulsiferae R. Ondricek-Fallscheer 1999-7-2 196 Lassen About 3/4 air mi SW of Hallelujah Junction (the junction of Hwy 70 and Hwy 395). 1499 Comment
  CHSC23489  Astragalus purshii Waynes O. Baum 1971-7-16 71 -70 Lassen W. slope of Gallatin Peak. 1981 Comment
  JEPS54815  Astragalus purshii L. S. Smith 1916-5-22 Lassen Honey Lake Comment
  RSA715542  Astragalus purshii var. purshii L. Ahart 2005-6-1 11870 Lassen About 1/2 miles 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
  JEPS94605  Astragalus purshii var. tinctus Vernon H. Oswald and Lowell Ahart 1997-5-27 8517 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  POM16083  Astragalus purshii var. tinctus M. S. Baker 1894-7-9 s.n. Lassen Dixey Valley Comment
  UC13456  Astragalus purshii var. tinctus L. T. Stephenson Sept., 1897 Lassen Chat Comment
  RSA339987  Astragalus whitneyi Noel Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 2195 Comment
  UCD105481  Astragalus whitneyi B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  CAS-BOT-BC200874  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CAS-BOT-BC200875  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 7 miles below Eagle Lake 1524 Comment
  CHSC5284  Astragalus whitneyi var. siskiyouensis V. Holt 1945-6-1 Lassen Eagle Lake. Comment
  UC1561813  Astragalus whitneyi var. siskiyouensis Barbara Ertter with Gary Schoolcraft 1987-6-16 7183 Lassen open rhyolitic ridge w Hot Springs VABM (Skeedaddle Mountains on ne side of Honey Lake); Skeedaddle Mountains, ne side Honey Lake,l w of Hot Springs 2133 Comment
  CHSC64780  Atriplex argentea var. hillmanii Vernon H. Oswald 1995-6-7 6842 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road near milepost 19.5 just e of Skedaddle Creek, e of Wendel, ne of Susanville. 1231 Comment
  UC769845  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  CHSC109990  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 B 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
  JEPS120466  Atriplex canescens var. canescens L. P. Janeway, B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. Comment
  UC1567451  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen Secret Valley w Hwy 395; Secret Valley 1347 Comment
  CHSC76093  Atriplex heterosperma Lowell Ahart; Vernon Oswald 1999-9-13 8208 Lassen On the west side of the dirt road and 1/2 mile south of the isgn in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1176 Comment
  CAS-BOT-BC106555  Balsamorhiza John Thomas Howell 1976-7-20 52011 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek - Sierra Nevada 1432 Comment
  CAS-BOT-BC106485  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen Warner Mountains, Modoc National Forest - Five miles beyond Blue Lake on road to Likely 1767 Comment
  CAS-BOT-BC106489  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
  CAS-BOT-BC106497  Balsamorhiza hookeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49167 Lassen In open yellow pine forest, Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  UC1368790  Balsamorhiza hookeri John L. Strother 1970-5-23 957 Lassen 6 mi n Honey Lake 1280 Comment
  UC964788  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi west of Fredonyer Pass, Highway 36 Comment
  SEINET2047669 Image available Balsamorhiza hookeri var. hirsuta N. H. Holmgren, P. K. Holmgren 1978-6-12 8935 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance East-Southeast of Ravendale. T33N, R16E, S5. 1768 Comment
  UCD20370  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
  CAS-BOT-BC106460  Balsamorhiza sagittata Helen K. Sharsmith 1955-6-22 4500 Lassen Five miles beyond Blue Lake on road to Likely; Warner Mountains - Modoc National Forest 1767 Comment
  UCR183235  Balsamorhiza sagittata Jim Andre, G. L. Clifton 1993-5-28 7720 Lassen Honey Lake Valley: Along Hwy 395 c. 22 mi. ENE of Susanville, 2 mi. south of Viewland exit 1291 Comment
  CAS-BOT-BC16435  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49464 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC16437  Barbarea orthoceras George Wilson Gillett 1957-7-21 868 Lassen Lassen Volcanic National Park. Juniper Lake - Cameron Meadow trail. 300 yards north of trail summit. 2118 Comment
  CHSC96767  Berteroa incana D. McDonald 2005-7-18 1307852 Lassen Modoc Plateau. Lassen County. Hallelujah Junction. Comment
  JEPS113921  Berteroa incana William Harnach 2006-5-31 1229 Lassen Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch). Comment
  CAS-BOT-BC169400  Betula glandulosa John Thomas Howell 1934-7-9 12514 Lassen Bridge Creek Spring Comment
  NY526245  Betula glandulosa B. M. Bartholomew 1988-7-22 4500 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 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
  CAS-BOT-BC128040  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen Sagebrush plains at south end of Secret Valley Comment
  CAS-BOT-BC128042  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CHSC48131  Blepharipappus scaber Vernon H. Oswald 1986-6-15 2112 Lassen Hwy 36, 15.0 mi E of Plumas-Lassen Co. line, 3.5 mi E of Fredonyer Pass. 1508 Comment
  POM204103  Blepharipappus scaber J. T. Howell 1934-6-10 11894 Lassen Horse Lake Comment
  RSA768023  Blepharipappus scaber L. Ahart, John Dittes 2010-7-31 16980 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
  SEINET11261379  Blepharipappus scaber Stanley L. Welsh, N. Duane Atwood 2001-6-14 28151 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1540 Comment
  CAS-BOT-BC128036  Blepharipappus scaber Lemmon April 18 188 s.n. Lassen Madaline plains Comment
  SFV7758  Blepharipappus scaber T. Gordon, K. Kimbrough 1975-8-15 1210 Lassen 16 miles south of Adin. 1402 Comment
  UCD129605  Blepharipappus scaber Michael A. Vincent 1999-6-9 8578 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  UC1504460  Boechera pauciflora Reed C. Rollins and Kathryn W. Rollins 1981-5-31 81178 Lassen just n Eagle Lake Comment
  CAS-BOT-BC14092  Boechera pauciflora John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50687 Lassen Sierra Nevada. South and southeast of Diamond Mountain. 2286 Comment
  UC1523799  Boechera rectissima Gary Schoolcraft 1981-8-7 610 Lassen near London lookout 1950 Comment
  CAS-BOT-BC25512  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-7-31 50039 Lassen Sierra Nevada. Diamond Range on road from Janesville to Thompson Peak. 1737 Comment
  CHSC91294  Boechera retrofracta Lowell Ahart; John Dittes 2005-6-2 11926 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
  CHSC106675  Boechera sparsiflora B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UC1561877  Boechera subpinnatifida Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen Skeedaddle Mountains on NE side of Honey Lake, E of road over saddle on W side of range. 1645 Comment
  RSA121169  Boisduvalia glabella G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 197 Lassen Grass Valley (Dry Lake), Lassen [National] Forest 1695 Comment
  RSA339991  Boisduvalia stricta Noel Holmgren, Patricia K. Holmgren 1980-7-3 9492 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Hwy 395, 14.5 km (9 mi) airline distance southeast of Ravendale. 1700 Comment
  UC2118  Bolboschoenus fluviatilis J. Burtt Davy Jun 17 1897-Jun 24 1897 3313 Lassen Byers' Ranch Honey Lake Valley, Byers' Ranch Comment
  CHSC60929  Brodiaea coronaria subsp. coronaria Vernon H. Oswald; Lowell Ahart 1993-7-8 5676 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  CAS-BOT-BC457057  Brodiaea coronaria subsp. coronaria A. M. Vollmer; L. Beane 1953-7-1 105 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC144333  Bromus R. E. Frenkel 1964-7-12 666 Lassen On California Highway 299, 1.5 mile west of Bieber. 1249 Comment
  SEINET8506610  Bromus briziformis D. W. Taylor 2005-6-29 19380 Lassen Piute Creek, 3 miles West from western edge, Susanville 1311 Comment
  UCD32673  Bromus briziformis Beecher Crampton 1954-7-6 2077 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  UCD55286  Bromus briziformis Ellen Dean; Gary Schoolcraft 2006-5-16 3105 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
  UC53631  Bromus carinatus var. carinatus M. S. Baker and Frank Nutting 1894-7-5 Lassen s of Dixie Valley Comment
  RSA715540  Bromus ciliatus var. ciliatus L. Ahart 2005-6-1 11865 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
  CAS-BOT-BC155938  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  POM264546  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CHSC112471  Bromus hordeaceus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18783 Lassen Along the fence on the west side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  RSA126866  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S- 409 Lassen Burgess Spr. Exp. Range; Lassen Forest. 1860 Comment
  RSA152589  Bromus tectorum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16341 Lassen 13.5 mi. E. of Susanville Comment
  UC1131267  Bromus tectorum H. S. Yates 1936-8-12 6085 Lassen McKenzie Meadow 1524 Comment
  UC773967  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S 409 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  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
  CAS-BOT-BC185530  Bromus vulgaris John Thomas Howell; Gordon H. True 1973-7-31 50056 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CHSC113088  Calandrinia ciliata Lowell Ahart; John Dittes 2013-7-22 18876 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
  CAS-BOT-BC438313  Calandrinia ciliata H. D. Ripley; R. C. Barneby 1942-6-14 5736 Lassen Westwood 1554 Comment
  HSC36104  Callitriche fassettii Ken Mahouski 1973-4-29 Lassen Along Hat Creek at Hat #2 power house forebay, near Cassel. Comment
  JEPS120868  Callitriche heterophylla Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18750 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
  UCD149989  Callitriche palustris William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  SEINET3828391  Callitriche verna R. F. Thorne, Larry E. De Buhr 1975-1 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  RSA0011566  Callitriche verna R. F. Thorne, Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 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
  CHSC27601  Calocedrus decurrens George Deniso 1978-7-24 99 Lassen Roadside between Gallatin Peak and Miners Bay, SE side of Eagle L. 1597 Comment
  SEINET10531060  Calocedrus decurrens Katherine L. Morris 1973-5-25 Morris 226 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  SEINET11051598  Calocedrus decurrens D. Charlet 1996-7-8 2289 Lassen Sierra NV, Diamond Mountains, East Canyon, Milford Grade, Laufman Campground. 1620 Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  CHSC118825  Calochortus leichtlinii L. P. Janeway; B. Castro 2017-7-2 12339 Lassen Northern High Sierra Nevada. Along the crest of the Diamond Mtns 4.0 air-km west of Diamond Mtn; at the junction of Skyline Motorway, Diamond Mtn Road, and Diamond Mtn Motorway. 2004 Comment
  CHSC67072  Calochortus leichtlinii Willis Ball 1969-6-20 15 Lassen Found approx. 1 mile S. E. of E. L. B. S. about 50 ft. off the dirt road to the station. 1584 Comment
  CHSC27637  Calochortus macrocarpus J. D. Prouty 1978-7-26 27 Lassen Gorilla's Roost to Stone's Ranch Rd., SE of Eagle L. 1584 Comment
  CHSC4768  Calochortus macrocarpus R. Carter 1967-7-16 620 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville. Comment
  SEINET194898  Calyptridium umbellatum A. A. Heller 1938-6-22 15139 Lassen 1 mi E of Westwood along St Hwy 36 1524 Comment
  CHSC60789  Camassia quamash subsp. breviflora Vernon H. Oswald; Lowell Ahart 1993-6-3 5475 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. 1731 Comment
  CHSC64770  Camelina microcarpa Vernon H. Oswald 1995-5-31 6807 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC93245  Camelina microcarpa John Dittes; Scott Chamberlain 2004-6-28 1019 Lassen Modoc Plateau; Long Valley; ca. 4.4 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.6 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; near road. 1465 Comment
  NY608998  Camelina microcarpa G. Schoolcraft 1998-6-23 2737 Lassen Next canyon north of Ramhorn Springs Campground 1828.8 Comment
  SEINET3282785 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  UCR183189  Camissonia boothii subsp. alyssoides Jim Andre, G. L. Clifton 1993-5-28 7710 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  CHSC93568  Camissonia contorta Lowell Ahart; John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  SEINET5343990  Camissonia contorta M. J. Williams 1974-7-26 74 -L-22 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 70 1494 Comment
  RSA17675  Camissonia parvula Elmer I. Applegate 1934-5-4 8930 Lassen Secret Valley Comment
  NY852073  Camissonia tanacetifolia J. T. Howell 1973-8-1 50209 Lassen Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville 2164 Comment
  NY852081  Camissonia tanacetifolia N. H. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  RSA144901  Camissonia tanacetifolia G. I. Stage, R. Thorp 1959-6-21 59 -117 Lassen 5.1 miles north of Termo Comment
  SEINET10492095  Camissonia tanacetifolia David B. Dunn, Paul Gallian 1971-6-2 Dunn 493 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc; juniper artemesia. 1646 Comment
  POM204165  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell 1934-7-8 12505 Lassen Spalding s, Eagle Lake. Comment
  POM38821  Camissonia tanacetifolia subsp. tanacetifolia Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA339989  Camissonia tanacetifolia subsp. tanacetifolia Noel Holmgren, Patricia K. Holmgren 1980-7-3 9477 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
  CHSC117199  Capsella bursa-pastoris Lowell Ahart; John Dittes 2016-6-7 20980 Lassen On the west side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1137752  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  UC1494954  Cardamine nuttallii Reed C. Rollins and Kathryn W. Rollins 1981-5-30 81166 Lassen Gold Run Road toward Sky Line Drive 10 mi s Susanville; s of Susanville Comment
  RSA74138  Cardamine pulcherrima Milo S. Baker 1952-5-23 12430 Lassen Hwy. 36, 1/2 mi West of Fredonyer Pass 1753 Comment
  UC1924259  Cardaria chalepensis Debra Valov 2004-5-31 2004228 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CDA3662  Cardaria chalepensis T. C. Fuller 1964-10-7 12695 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 1 mile southwest of Nubieber. 0 Comment
  JEPS94075  Cardaria pubescens Vernon H. Oswald and Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on County Rd. 91 (Bieber-Lookout Rd.)) 1258 Comment
  SEINET10644607  Carex Willard W. Eggleston 1927-7-11 Eggleston 21479 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  HSC97144  Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. Along end of meadow and marsh along Bridge Creek, 1.8 km. N of Hwy. 44, just NW of the Cinder Pit 1716 Comment
  CAS-BOT-BC18107  Carex athrostachya James Stokes 1939-6-15 s.n. Lassen Bullard Lake west of Grasshopper Valley. Comment
  POM313130  Carex athrostachya H. L. Mason 1947-7-9 13300 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  CHSC66412  Carex aurea Vernon H. Oswald; Lowell Ahart 1996-6-17 7814 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  SEINET13351078  Carex davyi B. L. Wilson, P. Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley 1740 Comment
  HSC48336  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19246 Lassen 2 mi. N of Westwood Comment
  JEPS94477  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8502 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling road); Forest Route 38N04 1546 Comment
  JEPS94486  Carex douglasii Vernon H. Oswald and Lowell Ahart 1997-5-27 8519 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38MN04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir, Forest Route 38MN04 1682 Comment
  UC1537637  Carex douglasii Gordon H. True Jr. 1939-6-15 996 Lassen w Grasshopper Lake; Bullard Lake Comment
  UC190412  Carex douglasii M. S. Baker and Frank Nutting 1894-7-5 Lassen Mts. s Dixey Valley Comment
  SEINET3900583  Carex douglasii D. H. Norris, T. Nelson; Steve Dowty 1971-6-22 19246 Lassen About 2 miles north of Westwood, California.; 0 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
  SEINET7558593 Image available Carex filifolia var. erostrata L. P. Janeway 2004-6-26 8162 Lassen High Cascade Range. At Patterson Well in Patterson Flats. Blacks Mountain Experimental Forest. Poison Lake 7.5' quad. 1767 Comment
  UC1133496  Carex filifolia var. erostrata A. Simontacchi 1940-5-17 729 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS87491  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen e Silver Lake (at the sw edge of swamp, just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
  HSC103621  Carex heteroneura Thomas W. Nelson, Jane Nelson 1985-8-10 8024 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  HSC48184  Carex hoodii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19242 Lassen 2 mi. N of Westwood Comment
  JEPS63616  Carex hoodii Leland S. Smith 1922-7-18 78 Lassen Martin Springs Meadow, Lassen National Forest Comment
  HSC95182  Carex interior Gordon Leppig 1998-8-17 1055 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC61066  Carex lasiocarpa Vernon H. Oswald; Lowell Ahart 1993-8-3 5752 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. In the NW part of the swamp. 1932 Comment
  HSC103667  Carex lemmonii Thomas W. Nelson, Jane Nelson 1985-8-10 8006 Lassen Along north side of Silver Lake 1829 Comment
  JEPS88667  Carex lenticularis var. impressa Dean W. Taylor 1975-8-24 5407 Lassen margin of Everett Lake Thousand Lake Wilderness Area, Magee Peak, Everett Lake 2307 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  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
  CAS-BOT-BC31439  Carex leporinella Hans Leschke 1945-9-15 s.n. Lassen Near Twin Lakes, Mt. Lassen Comment
  CDA33106  Carex limosa Gordon Leppig, J. Cromwell 1997-7-27 610 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  UC1136939  Carex mariposana L. R. Short and J. Warren 1936-6-9 S- 405 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  UC1133499  Carex microptera A. Simontacchi 1940-7-3 917 Lassen 3.5 mi wsw Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1136940  Carex microptera George A. Fischer, Irwin H. Johnson 1933-7-12 F 237 Lassen Patterson Flat Lassen Forest 1737 Comment
  CHSC98668  Carex nebrascensis Thomas W. Nelson; Jane P. Nelson 1985-8-10 8019 Lassen In lake side bog along north side of Silver Lake. 1828 Comment
  HSC95265  Carex nebrascensis Gordon Leppig 1998-8-17 1053 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM81950  Carex nebrascensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1100497  Carex nebrascensis Verne Grant and Herbert L. Mason 1947-7-9 13301 Lassen 5 mi e Bieber Comment
  UCD140685  Carex nebrascensis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CAS-BOT-BC119042  Carex pellita Hans Leschke 1960-8-10 1768 a Lassen Badger Flat 1912 Comment
  CHSC66738  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-8-1 8110 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC89743  Carex petasata L. P. Janeway 2004-6-26 8139 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
  CHSC91378  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11877 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
  JEPS118273  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 17477 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SEINET7572132 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen On 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
  UC1133503  Carex praegracilis Robert W. Gardner 1939-6-15 G- 37 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  CAS-BOT-BC118027  Carex rossii John Thomas Howell; Gordon H. True 1973-8-1 s.n. Lassen Headwater of Baxter Creek, Diamond Mts. 2164 Comment
  HSC48218  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19222 Lassen 2 mi. N of Westwood Comment
  HSC48338  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19244 Lassen 2 mi. N of Westwood Comment
  HSC103634  Carex scopulorum var. bracteosa Thomas W. Nelson, Jane Nelson 1985-8-10 8028 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  JEPS122357  Carex simulata Joseph Broberg, Jaycee Leonard 2012-7-25 CA 320 -115 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left onto Cold Springs road. Collection is at Dodge Springs Comment
  SEINET6171441  Carex simulata CLM Team 2014-7-29 NV 030 -984 Lassen From Reno head north on 395, turn right onto Red Rock Rd. and proceed roughly 0.5-0.75 of a mile and park at dirt pull off on the right side of the road 1381 Comment
  CAS-BOT-BC117018  Carex straminiformis Clare B. Hardham 1971-8-22 18423 Lassen Diamond mountain. Comment
  UC1142962  Carex straminiformis A. L. Hormay 1941-6-19 25 Lassen Squaw Valley Lassen National Forest 1737 Comment
  CAS-BOT-BC116624  Carex subfusca John Thomas Howell 1973-7-10 49779 Lassen Fredonyer Pass. 1737 Comment
  CAS-BOT-BC116625  Carex subfusca Alice Eastwood; John Thomas Howell 1940-6-15 8304 Lassen Willow Creek near Hayden Hill. Comment
  CHSC77248  Carex subfusca G. Schoolcraft 1997-7-9 2608 Lassen S of Doyle Corral. 1706 Comment
  RSA702448  Carex subfusca L. P. Janeway 2004-6-26 8169 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  SEINET7577214 Image available Carex subfusca George W. Gillett 1957-7-26 911 Lassen Lassen Volcanic National Park, Butte Lake, lake shore near northeast arm of lake. 1844 Comment
  CAS-BOT-BC115283  Carex utriculata Ray Hanson 1954-8-23 s.n. Lassen Lassen Park, near Jackey Lake. Comment
  SEINET7579515 Image available Carex utriculata George W. Gillett 1957-7-22 885 Lassen Lassen Volcanic National Park, Snag Lake, near campsite at south end of lake. 1850 Comment
  CHSC96454  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95286  Carex vesicaria Gordon Leppig 1998-8-17 1039 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95287  Carex vesicaria Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 534 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC103676  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8022 Lassen Margin of pond along south side of lava flow on west side of Silver Lake 1829 Comment
  HSC103677  Carex vesicaria Thomas W. Nelson, Jane Nelson 1985-8-10 8029 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  SEINET7579960 Image available Carex vesicaria George W. Gillett 1957-7-22 879 Lassen Lassen Volcanic National Par, Snag Lake, matin of gravel bars along south shore. 1850 Comment
  HSC48179  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen 2 mi. N of Westwood Comment
  HSC48217  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19237 Lassen 2 mi. N of Westwood Comment
  CAS-BOT-BC248970  Castilleja Philip A. Munz 1947-5-19 11866 Lassen 27.7 miles south of Ravendale, on Highway 395 1310 Comment
  CAS-BOT-BC248971  Castilleja Margaret M. Hanna 1956-6-3 943 Lassen 2 mi. West of Nubieber Comment
  CAS-BOT-BC249341  Castilleja applegatei Gary Schoolcraft 1983-6-29 1044 Lassen Ash Valley 1554 Comment
  CAS-BOT-BC249340  Castilleja applegatei Gary Schoolcraft 1983-7-19 1097 Lassen S. slopes of Fredonyer Pk. 33-12-27 2255 Comment
  CAS-BOT-BC249616  Castilleja applegatei subsp. pinetorum Doris Kildale Gillespie 1930-5-13 9367 Lassen Between Susanville and Janesville Comment
  CHSC23477  Castilleja applegatei subsp. pinetorum Wayne O. Baum 1971-7-6 71 -36 Lassen E. slope of Gallatin Peak. 1920 Comment
  CHSC5077  Castilleja applegatei subsp. pinetorum R. Clicquennoi 1967-6-30 27 Lassen W cent. shore of Eagle Lake, 1/2 mi s of Pelican Point. 1554 Comment
  CHSC7750  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-4 105 Lassen 4 mi. north of Susanville on Hwy 139 (Antelope Grade). 1371 Comment
  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
  POM260676  Castilleja applegatei subsp. pinetorum Alice Eastwood, John T. Howell 1940-6-15 8326 Lassen Grasshopper Valley. Comment
  UC1012183  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Susanville; Route 36 1371 Comment
  UC1035996  Castilleja applegatei subsp. pinetorum Helen K. Sharsmith 1955-6-22 4495 Lassen 5 mi beyond Blue Lake (on the road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UC1537569  Castilleja applegatei subsp. pinetorum Gordon H. True Jr. 1936-6-27 563 Lassen Hot Springs Mountain 1676 Comment
  UC1924599  Castilleja applegatei subsp. pinetorum Debra Valov 2006-5-28 2006009 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1291 Comment
  UC773848  Castilleja applegatei subsp. pinetorum L. R. Short and J. Warren 1936-6-5 S- 378 Lassen Burgess Spring Experiment Range; Lassen Forest 1792 Comment
  CHSC5897  Castilleja campestris subsp. campestris J. B. Kimsey 1946-6-11 Lassen Pine Creek near Eagle Lake. 1584 Comment
  UC1484795  Castilleja campestris subsp. campestris Noel H. Holmgren and Patricia K. Holmgren 1978-6-10 8903 Lassen 9 mi ene Termo (and 8 air distance); Madeline Plains, Coyote Flat 1630 Comment
  CHSC115227  Castilleja chromosa B. Castro; L. P. Janeway. 2015-6-5 2094 Lassen Great Basin. Near the SE corner of the Warner Mtns. Along W side of Tuledad Toad ca 3 air mi NE of Dodge Reservoir and 0.5 road-mi S of W end of Tuledad Canyon, on gentle NE-facing slope. 1661 Comment
  CHSC117210  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 20993 Lassen West of pond, 110 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
  JEPS74943  Castilleja lacera T. I. and F. M. Chuang 1975-7-23 7556 Lassen just w Westwood (area of golf course) Comment
  UC1567405  Castilleja lacera G. Schoolcraft 1989-6-5 1895 Lassen s of Adin (intersection of Hwy 139 and A2) 1341 Comment
  UC199376  Castilleja lacera Milo S. Baker 1900-1 Lassen Milford Comment
  CHSC1714  Castilleja linariifolia 1944-7-5 Lassen Bogard. 1722 Comment
  CHSC63419  Castilleja linariifolia Vernon H. Oswald 1994-7-8 6369 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
  JEPS126474  Castilleja linariifolia Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-8-10 CA 350 -067 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  UC1542951  Castilleja linariifolia G. Schoolcraft 1987-9-1 1771 Lassen s side near top Observation Mtn. 2346 Comment
  JEPS9846  Castilleja miniata W. L. Jepson 1918-8-2 7793 Lassen Honey Lake Valley 1219 Comment
  POM44361  Castilleja miniata Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC241001  Castilleja pilosa B. Bartholomew; B. Anderson 1988-6-25 4369 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC241002  Castilleja pilosa Doughitt; Parkison 1916-6-8 4 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  RSA59750  Castilleja psittacina E. K. Balls 1950-5-19 14778 Lassen 17.5 mi. W. of Madeline on rd. from Adin. 1677 Comment
  CHSC99131  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-19 14874 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
  JEPS114693  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
  UC1063260  Castilleja tenuis A. Simontacchi 1940-6-5 812 Lassen 3.9 mi nw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1609352  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1993-6-14 5524 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd (Lassen A1) at Sandy Beach on the w shore of Eagle Lake, between the road and the lake); Eagle Lake 1566 Comment
  UC199377  Castilleja tenuis Franklin P. Nutting 1894-7-21 Lassen near Eagle Lake Comment
  UC27210  Castilleja tenuis J. Burtt Davy Jun 17 1897-Jun 24 1897 3369 Lassen Adobe meadows; Honey Lake Valley Comment
  UC717969  Castilleja tenuis David D. Keck 1944-6-8 5444 Lassen 2 mi e Westwood (near Mountain Meadows Reservoir) 1524 Comment
  SBBG128749  Castilleja tenuis L. Ahart, J. Dittes 2008-6-22 15027 Lassen a small natural drainage, ca. 20 yards W of the rd levee, open meadow area, in Big Valley, ca. 2.1 mi (air) NE of the Headqaurters at Ash Crk State Wildlife Area, ca. 5.0 mi (air) NE of Bieber 1262 Comment
  JEPS123842  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2015-7-14 20329 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC1523761  Caulanthus major var. nevadensis Gary Schoolcraft 1982-6-23 733 Lassen Ft. Sage Mtns. 1828 Comment
  RSA339727  Ceanothus cordulatus F. R. Fosberg 1969-8-16 51426 Lassen (California Registered Historical Landmark 678) 10 mi. west of Susanville. Comment
  CAS-BOT-BC52050  Ceanothus prostratus L. B. Barlow 1967-7-4 92 Lassen 5 mi. South of Eagle Lake Biological Station on Gallatin Beach Road 1737 Comment
  CAS-BOT-BC52051  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen About 4 1/2 mis. West of Bieber along Highway #299 Comment
  CAS-BOT-BC52056  Ceanothus prostratus C. H. M. 1907-9-15 s.n. Lassen Eldridge's Ranch, East of Hat Creek (N. of Lassen Peak on road from Fall River Mills to Susanville) Comment
  JEPS103176  Ceanothus prostratus G. Schoolcraft 2000-4-25 2890 Lassen 3.5 mi N of Susanville along Hwy 139 1402 Comment
  JEPS118451  Ceanothus prostratus Lowell Ahart, John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  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
  UC1071529  Ceanothus prostratus A. Simontacchi 1940-5-13 706 Lassen 4.1 mi W of Harvey Mountain 1981 Comment
  HSC63932  Ceanothus velutinus var. velutinus Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak near summit, N face 2424 Comment
  JEPS107853  Ceanothus velutinus var. velutinus Lowell Ahart, John Dittes 2005-6-2 11943 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  UCD130019  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen east side of Highway 395 to Madelaine, 1.6 mile north of Termo. Comment
  UCD130022  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen east side of Highway 395 to Madelaine, 1.9 mile north of Termo. Comment
  CDA7337  Centaurea squarrosa T. C. Fuller, W. T. Parsons 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley. 0 Comment
  CHSC113010  Centaurea virgata subsp. squarrosa Lowell Ahart; John Dittes 2013-7-23 18910 Lassen Near the summit on the north side of the Highway 299, at entrance road to quarry site, Big Valley Mountain, just east of Big Valley Summit, 2.8 miles (air) southwest of Nubieber. 1408 Comment
  CAS-BOT-BC106029  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen On both sides of the road from 0.1 to 0.9 mi. s. of the bridge at Pittville 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
  RSA153397  Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley Comment
  UC35451  Centaurium exaltatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3392 Lassen Honey Lake Valley Comment
  SEINET7379749 Image available Centromadia pungens M. J. Williams, G. Smith 1983-1 83- 155 -1 Lassen 5 mi E of Hwy 395 on A-3 which joins the road to Alturas 1372 Comment
  UC762592  Centromadia pungens subsp. pungens R. F. Hoover 1940-10-1 4657 Lassen between Janesville and Standish; Honey Lake Comment
  CAS-BOT-BC388151  Cerastium fontanum John Thomas Howell; Gordon H. True 1973-8-1 50162 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC388152  Cerastium fontanum Louella Bass 1973-6-3 90 Lassen Elysian Valley. West side of Ridge Meadow 1325 Comment
  CAS-BOT-BC400181  Ceratophyllum demersum Milo S. Baker July 25 3644 a Lassen Eagle Lake Comment
  CHSC68761  Cercocarpus ledifolius var. intermontanus Vernon Oswald; Lowell Ahart 1997-5-27 8513 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. 1645 Comment
  CAS-BOT-BC143806  Cercocarpus ledifolius var. ledifolius George W. Gillett 1957-7-26 902 Lassen Butte Lake 1844 Comment
  CHSC12418  Cercocarpus ledifolius var. ledifolius Anne Linda Brisk 1969-6-19 5 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC61997  Cercocarpus ledifolius var. ledifolius Brian Murray 1994-6-4 20 Lassen 0.8 miles North of the A21 turnoff on road A1. 50 ft. from the ice cave. 1554 Comment
  SD8909  Chaenactis douglasii R. M. Austin Aug 1882 Lassen Comment
  CHSC4432  Chaenactis douglasii var. douglasii K. R. Stern 1967-7-1 2457 Lassen Ca. 14 mi. NE of Susanville. State Hwy. 139. Comment
  CHSC5202  Chaenactis douglasii var. douglasii R. Gein 1946-6-24 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  JEPS17749  Chaenactis douglasii var. douglasii Rimo Bacigalupi with G. T. Robbins 1955-7-19 5370 Lassen 10.3 mi se of Adin (along Ash Valley road betw. Adin & Madeline) 1524 Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC30985  Chaenactis douglasii var. douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3410 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC276613  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-25 3755 Lassen Susanville, just W of town 1300 Comment
  CAS-BOT-BC276617  Chaenactis douglasii var. douglasii John Thomas Howell 1976-7-20 52024 Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles W of Fredonyer Pass 1432 Comment
  CHSC6251  Chamaebatiaria millefolium 1944-7-16 Lassen West side of Eagle Lake. 1584 Comment
  UC1542162  Chamaesaracha nana Paul Covel 1986-6-6 Lassen e of Chester (Lake Almanor dike); Lake Almanor Comment
  CHSC99743  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2008-6-20 14913 Lassen On the levee road and in vernal pools, 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
  RSA0105580  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart, John Dittes 2013-7-22 18857 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS52348  Chamaesyce serpyllifolia W. L. Jepson 1918-8-2 7762 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC383107  Chamerion angustifolium subsp. circumvagum Andrew Townesmith; Karen M. Meyer 2007-7-20 838 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  CHSC65306  Chenopodium album Vernon H. Oswald; Lowell Ahart 1995-8-14 7180 Lassen Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  JEPS97785  Chenopodium chenopodioides Annetta M. Carter 1945-9-30 1726 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  JEPS87185  Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake on the S side of Hwy 44 between Oldo Station and Susanville, 1.2 mi SE of County Road A21. 1745 Comment
  CAS-BOT-BC451357  Chimaphila menziesii Louella Bass 1978-6-15 78 -3 Lassen Elysian Valley 1325 Comment
  JEPS57772  Chorizanthe watsonii W. L. Jepson 1918-8-2 7766 Lassen Beckwith Pass 1463 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
  UC149174  Chorizanthe watsonii T. S. Brandegee Lassen Honey Lake Comment
  CHSC13793  Chrysolepis sempervirens Robert Smallwood 1970-7-9 154 Lassen Gallatin Peak, 1/2 mile west of Dean's Meadow. 1950 Comment
  SEINET7450659 Image available Chrysopsis villosa var. minor M. J. Williams 1974-7-29 74 -L-61 Lassen 2 mi. west of Hallelujah Junction, south of Hwy. 70. 1494 Comment
  CAS-BOT-BC140657  Chrysothamnus humilis Clare B. Hardham 1971-8-22 18391 Lassen Diamond Mountain 2346 Comment
  CAS-BOT-BC106024  Chrysothamnus viscidiflorus subsp. lanceolatus Ynez Whilton Winblad 1935-9-23 s.n. Lassen Susanville Comment
  CHSC66850  Chrysothamnus viscidiflorus subsp. lanceolatus Vernon H. Oswald 1996-9-21 8287 Lassen Modoc Plateau. Willow Creek Wildlife Area on Hwy. 139 ca. 10 mi (air) N of Susanville. Levee, along the S edge of Willow Creek ca. 1 mi E of the parking area on the highway. 1490 Comment
  SEINET5727104 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7713 Lassen Collected along Forest Road 37N11, off CA Hwy 139.; Modoc National Forest 1555 Comment
  UC761845  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-10-5 4664 Lassen Wendel Comment
  RSA252470  Chrysothamnus viscidiflorus var. lanceolatus R. F. Thorne, C. W. Tilforth 1969-9-6 39267 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC162753  Chylismia claviformis subsp. cruciformis G. H. True 1937-7-10 791 Lassen Skeedaddle Comment
  CAS-BOT-BC162757  Chylismia claviformis subsp. cruciformis Philip A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravensdale, on Highway 395 1341 Comment
  CAS-BOT-BC279833  Cichorium intybus Louella Bass 1973-6-15 109 Lassen Elysian Valley 1325 Comment
  CHSC42574  Cicuta douglasii Vernon Oswald 1986-7-22 2222 Lassen Hwy 36, 6.0 mi e of the Plumas-Lassen County line. 1524 Comment
  RSA746510  Cirsium andersonii K. M. Meyer, A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. CA, 1.3 mi. on road 110, off Hwy A21, 1821 Comment
  UC773847  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spring Experiment Range 1825 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
  CAS-BOT-BC278004  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen Hwy. 395, 7 miles north/road to Karlo Comment
  CAS-BOT-BC278009  Cirsium cymosum Michael A. Vincent 1999-6-9 8575 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon Comment
  CDA1173  Cirsium cymosum G. D. Barbe 1982-7-12 3870 Lassen Grasshopper Valley; South Grasshopper Rd, 0.8 miles northeast of Hwy 139. 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
  UC773846  Cirsium cymosum var. cymosum L. R. Short and Wm. Gansberg 1936-7-9 S- 479 Lassen Burgess Spring Experiment Range 1807 Comment
  CAS-BOT-BC278088  Cirsium douglasii var. breweri Alice Eastwood; John Thomas Howell 1940-6-15 8306 Lassen Willow Creek near Hayden Hill Comment
  JEPS59279  Cirsium occidentale var. californicum W. L. Jepson 1918-8-4 7807 Lassen Horse Lake 1554 Comment
  CAS-BOT-BC285579  Cirsium occidentale var. candidissimum John Thomas Howell 1934-7-11 12563 Lassen Eldridge, 10 miles se. of Fall River Mills Comment
  CAS-BOT-BC280423  Cirsium ochrocentrum Lee Wheeler 1951-9-1 s.n. Lassen On Clarence Hoffman Ranch Comment
  CAS-BOT-BC280440  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  JEPS107812  Clarkia lassenensis Lowell Ahart, John Dittes 2005-6-2 11951 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction 1512 Comment
  UC773910  Clarkia rhomboidea L. R. Short, J. Warren 1936-6-23 S- 448 Lassen Burgess Spring Experimental Range Lassen Forest 1798 Comment
  CHSC80231  Clarkia stellata Jeanne Boze 1981-6-12 108 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 Comment
  CHSC61167  Claytonia lanceolata Vernon H. Oswald; Lowell Ahart 1993-5-12 5381 .1 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, on the edge of a large meadowy opening covered with sagebrush scrub along Pine Creek. 1737 Comment
  UC7897  Claytonia rubra subsp. rubra M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  RSA0039348  Cleome John F. Emmel 1993-7-29 1282 Lassen Honey Lake Valley; ca. 2 air miles NW of Wendel. 1228 Comment
  JEPS94360  Cleome platycarpa Vernon H. Oswald and Lowell Ahart 1997-5-7 8403 Lassen Smoke Creek Ranch Road 3.4 mi w of California-Nevada State Line; Smoke Creek Ranch Road 1420 Comment
  NY222746  Cleome platycarpa N. H. Holmgren 1978-6-11 8928 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-southeast of Ravendale. 1700 Comment
  SEINET3153948  Cleome platycarpa J. L. Strother 1970-5-23 951 Lassen About 6 miles N of Honey Lake, at ca. 4200 feet elevation. 1280 Comment
  SEINET8584734  Cleomella hillmanii var. hillmanii W. Harnach 2010-6-1 1241 Lassen Approx 10 miles NE of Doyle on Fort Sage Road then 1.9 miles N on Cal-Neva Road. Honey Lake Valley. Comment
  JEPS42688  Cleomella parviflora J. Burtt Davy Jun 17 1897-Jun 24 1897 3352 Lassen Amedee Honey Lake Vally Comment
  UC83292  Cleomella parviflora Mrs. C. C. Bruce 2364 a Lassen Shumway Comment
Read comments Dec 20 2007
  CHSC77207  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  POM93728  Cleomella plocasperma Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CDA5730  Collinsia parviflora L. Ahart, J. 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. Comment
  CHSC112413  Collinsia parviflora Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18737 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS120877  Collinsia parviflora Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18737 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
  RSA0035917  Collinsia parviflora Lowell A. Ahart, John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1023722  Collinsia parviflora Francis W. Pennell 1940-6-9 25752 Lassen 7 mi n of Madeline (Route 395); Route 395 1615 Comment
  UC1951082  Collinsia parviflora Debra Valov 2009-4-24 2009009 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  HSC68935  Collinsia parviflora Gary Schoolcraft 1979-5-1 15 Lassen Along road between Big Springs and Shearing Corrals 1677 Comment
  RSA60368  Collinsia parviflora E. K. Balls 1950-5-9 15951 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  SEINET10548304  Collinsia sparsiflora Mary Susan Taylor 1982-5-7 Taylor 4427 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  JEPS117587  Collomia grandiflora Lowell Ahart, John Dittes 2010-7-31 17002 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  SEINET2445250  Collomia grandiflora Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9502 Lassen Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0 1890 Comment
  UC1137779  Collomia grandiflora August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest/Forest and Range Exp't Station 2133 Comment
  HSC16917  Collomia grandiflora Jim Vaughn 1956-7-25 Lassen Drakesbad 1738 Comment
  HSC23534  Collomia grandiflora R. Carter 1967-7-13 585 Lassen S side of rd. to Eagle Lake Biology Station and Willow Creek 1585 Comment
  HSC63767  Collomia grandiflora Teresa Prendusi 1980-5-19 Lassen 1 mi. N of Saddle Rock, 16 mi. S of Ravendale along Hwy. 395 1524 Comment
  SJSU11426  Collomia grandiflora V. Hardham 1965-7-12 130 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139 1524 Comment
  JEPS17747  Collomia linearis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5407 Lassen 4.4 mi s Patterson Ranger Sta.; southern end of Warner Mountains, Modoc National Forest, Lon 2057 Comment
  CHSC23479  Collomia tinctoria Wayne O. Baum 1971-7-5 71 -11 Lassen E. slope of Gallatin Peak. 1981 Comment
  RSA128290  Collomia tinctoria P. H. Raven, Otto T. Solbrig 1958-6-16 13255 Lassen Along State Highway 36, 0.9 miles east of summit of Fredonyer Pass Comment
  HSC95148  Comarum palustre Gordon Leppig 1998-7-12 934 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA3700  Conringia orientalis Agricultural Commissioner Jul 1948 Lassen Susanville. 0 Comment
  CHSC7713  Convolvulus arvensis Beverley J. Wise 1969-6-4 33 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  JEPS107824  Conyza canadensis Lowell Ahart, John Dittes 2005-6-2 11974 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
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  POM43083  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  JEPS88238  Cornus sericea subsp. sericea Vernon H. Oswald and Lowell Ahart 1996-6-17 7810 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, at 6 mi. post e. of Devils Corral Trailhead); Modoc Plateau 1420 Comment
  UC1776697  Cornus sericea subsp. sericea G. Schoolcraft 1994-8-3 2424 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  SD43504  Cornus stolonifera Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground, above Milford. 1525 Comment
  CHSC77215  Corydalis caseana subsp. caseana G. Schoolcraft 1997-8-6 2657 Lassen Along w. fork of Gold Run Creek about 8 miles sw of Susanville. 1859 Comment
  CHSC27664  Crepis acuminata Robert A. Schlising 1978-7-15 3317 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  JEPS126487  Crepis acuminata Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -040 Lassen Turn right at sign for Ravendale on 395, and follow Horse Lake Road past the ranch house and around the dried up lake for about 17 miles. Comment
  POM17703  Crepis acuminata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC91865  Crepis acuminata T. S. Brandegee 1892-6-22 Lassen Honey Lake 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
  UC1368788  Crepis occidentalis John L. Strother 1970-5-23 955 Lassen about 6 mi n Honey Lake 1280 Comment
  UC1924597  Crepis occidentalis Debra Valov 2006-5-28 2006007 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1305 Comment
  UC1776658  Crepis occidentalis G. Schoolcraft 1998-6-8 2731 Lassen Hills N. of Wendel 1402 Comment
  UCD130972  Crepis occidentalis J. E. Stuart 1930-6-12 2158 Lassen near Constantia, Reno Highway. 15 Comment
  CHSC60814  Crepis occidentalis subsp. conjuncta Vernon H. Oswald; Lowell Ahart 1993-6-28 5606 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC581316  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2221 Lassen 6 mi s Ravensdale 1676 Comment
  UC581317  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2218 Lassen 6 mi s Ravensdale 1676 Comment
  CHSC105239  Crepis occidentalis subsp. pumila Lowell Ahart; John Dittes 2010-7-31 16982 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
  UC1136844  Crepis occidentalis subsp. pumila L. R. Short and Wm. Gansberg 1936-7-7 S- 476 Lassen Burgess Spring Experiment Station Lassen <National> Forest 1764 Comment
  CAS-BOT-BC290824  Crepis occidentalis subsp. pumila David D. Keck; J. Clausen 1935-6-25 3759 Lassen Susanville 1340 Comment
  CDA4450  Crepis occidentalis subsp. pumila T. C. Fuller 1963-6-1 10619 Lassen West side of road to Susanville, 2.0 mi. south of Pittville. 0 Comment
  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
  CAS-BOT-BC299711  Crocidium Wm. Anderson 1963-4-15 s.n. Lassen Harson Reservoir Comment
  UC1140905  Crypsis vaginiflora L. D. Whitney 1935-7-28 3527 Lassen Bieber Pit River Comment
Read comments Jun 24 2009
  UCD59992  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  CHSC68849  Cryptantha Vernon Oswald; Lowell Ahart 1997-6-24 8593 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
  CHSC29967  Cryptantha affinis R. A. Schlising 1979-6-7 3450 Lassen Sof Eagle Lake, in Lassen National Forest, 5 mi N of Hwy 36, on Hwy A1. Comment
  NY1153786  Cryptantha affinis H. D. D. Ripley 1943-6-14 5720 Lassen West of Susanville 4750 Comment
  NY1153787  Cryptantha affinis G. Schoolcraft 1990-6-12 2089 Lassen About 17 miles east of Ravendale in Pine Dunes RNA 1707 Comment
  SBBG19764  Cryptantha affinis C. B. Hardham 1961-6-17 7505 Lassen Baxter Crk, S of Susanville Comment
  UC526167  Cryptantha affinis John Thomas Howell 1934-7-10 12545 Lassen Long's Well Comment
  JEPS117574  Cryptantha ambigua Lowell Ahart, John Dittes 2010-7-31 17023 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC189326  Cryptantha circumscissa John Thomas Howell 1934-6-10 11852 Lassen 4 miles S of Omira Comment
  JEPS94827  Cryptantha circumscissa Vernon H. Oswald and Lowell Ahart 1998-5-22 9135 Lassen 3.5 mi n of Doyle (Fort Sage Road 2.3 mi n of Hackstaff Road); Fort Sage Road 1341 Comment
  UC577869  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  SJSU11363  Cryptantha glomeriflora J. W. Tilden 1960-6-27 1494 Lassen Westwood 1524 Comment
  RSA0065500  Cryptantha hendersonii Marion P. Harthill 1972-6-17 817 Lassen Ravendale. 1524 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
  JEPS107799  Cryptantha pterocarya var. pterocarya Lowell Ahart, John Dittes 2005-6-2 11982 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  SDSU20202  Cryptantha schoolcraftii Ronald B. Kelley 2005-5-26 886 Lassen South end of Coppersmith Hills, on top edge of north-to-south running canyon of west facing steep slopes, 0.75 miles north of Tuledad Valley Road (CR506), T37N R17E sec.35 NE1/4 of NW1/4. Also found at 41 deg. 02.022'N, 120 deg. 0.529'W (WGS64), 5540' elev. 1715 Comment
  UC79293  Cryptantha simulans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC24702  Cryptantha torreyana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  NY674779  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale, CA 1737 Comment
  RSA0049616  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the crest 1950 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
  CHSC23486  Cystopteris fragilis Wayne O. Baum 1971-6-28 71 -51 Lassen E. slope of Gallatin Peak. 2087 Comment
  CAS-BOT-BC208395  Dalea ornata Gary Schoolcraft 1984-6-28 1280 Lassen NW of Shaffer Mtn., on the tablelands 1402 Comment
  CAS-BOT-BC445514  Damasonium californicum 1927-7-15 72 Lassen Lassen National Forest. Feather Lake 1737 Comment
  CAS-BOT-BC445515  Damasonium californicum M. S. Taylor 1982-6-12 4647 Lassen On n side of Susan River (West Fork), s side of hwy 36, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  CAS-BOT-BC445519  Damasonium californicum C. L. Hitchcock 1940-5-26 6646 Lassen Overflow of Pitt River, 1 mile west of Bieber. Comment
  RSA0011557  Damasonium californicum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  UCD21047  Damasonium californicum E. Bortiri 2002-7-19 WFC 83 Lassen Bear Valley Reservoir, Rd 35N08 to Long Valley from Hwy 44, Lassen Co. Comment
  UC1024653  Danthonia californica Leo Whitney 1933-8-3 2201 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CHSC61076  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1993-8-3 5755 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  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
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
Read comments Jul 11 2013
  CAS-BOT-BC192327  Danthonia unispicata Parkison 1916-6-10 15 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC71862  Deinandra lobbii Vernon H. Oswald; Lowell Ahart 1998-9-8 9573 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  CAS-BOT-BC1416  Delphinium andersonii L. B. Barlow 1967-6-23 1 Lassen Eagle Lake Biological Station, east central side of Eagle Lake 1554 Comment
  CHSC64806  Delphinium andersonii Vernon H. Oswald 1995-5-24 6784 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. On the s side of the road. 1219 Comment
  CHSC6243  Delphinium depauperatum J. E. Wolf 1946-6-12 Lassen Eagle Lake. 1580 Comment
  UC1184063  Delphinium depauperatum Jean Langenheim 1957-6-26 4391 Lassen areas adjacent to 1937 chaparral quadrat (nw <part of> valley, ne part of Lassen Co.); Said Valley Comment
  CDA24233  Delphinium depauperatum T. C. Fuller 1963-6-1 10636 Lassen Road east to Willow Springs Campground, 1.9 miles east of Pittville-Susanville Road, 11.2 road miles south of Pittville. 0 Comment
  CAS-BOT-BC116054  Delphinium nuttallianum Elmer Ivan Applegate 1929-6-21 5780 Lassen Kelley's Camp, Warner Valley, Mt. Lassen region Comment
  CAS-BOT-BC116468  Delphinium nuttallianum A. A. Heller 1938-6-4 s.n. Lassen ...about 2 miles south of Westwood 1463 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
  RSA0011561  Deschampsia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46991 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 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
  JEPS28061  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen 100 yds. above lake near s. shore Snag Lake; Lassen Volcanic Nat'l Park, Snag Lake 1850 Comment
  JEPS28309  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-8-9 1008 Lassen E. Fork of Hat Creek near Summit Lake Ranger Station; Lassen Volcanic Nat'l Park, E. Fork Hat Creek 2026 Comment
  JEPS114873  Deschampsia danthonioides Lowell Ahart, John Dittes 2008-6-20 14926 Lassen Vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC53606  Deschampsia elongata M. S. Baker and Frank Nutting 1894-7-5 Lassen Davis Creek Comment
  UCD63560  Deschampsia elongata John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49467 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CAS-BOT-BC42987  Descurainia incisa subsp. incisa A. M. Vollmer; L. Beane 1953-7-1 13 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur. 1554 Comment
  UCD114633  Descurainia longipedicellata Grady L. Webster 1989-5-13 7709 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  CHSC64772  Descurainia pinnata subsp. intermedia Vernon H. Oswald 1995-5-24 6777 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel). Roadside. 1219 Comment
  CHSC93563  Descurainia sophia Lowell Ahart; John Dittes 2005-6-2 11925 A Lassen Long Valley, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC1924260  Descurainia sophia Debra Valov 2004-5-31 2004227 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC56816  Dichelostemma multiflorum Jerry Snodgrass 1978-7-8 42 Lassen Willard Creek, 2 mi S of Hwy 36 near Forest Service campsite. 1499 Comment
  CAS-BOT-BC292259  Dieteria canescens John Thomas Howell 1974-7-8 50470 Lassen Susanville 1295 Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  CAS-BOT-BC299810  Dieteria canescens var. canescens Ella Dales Cantelow 1940-10-5 3412 Lassen N.W. of Johnstonville Comment
  CAS-BOT-BC299811  Dieteria canescens var. canescens Mrs. H. C. Cantelow 1940-10-5 s.n. Lassen About 1 1/2 mi. N.W. of Johnstonville, east of Sierra Nevada Mts. Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle 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
  UC1119608  Dieteria canescens var. shastensis H. S. Yates 1936-8-11 6077 Lassen near Johnstonville; Susanville Quad. Comment
  UC1536890  Dieteria canescens var. shastensis G. H. True Jr. 1936-6-25 532 Lassen flats e of Harvey Ranger Station; Harvey Valley 1706 Comment
  UC86850  Dieteria canescens var. shastensis Wm. M. Canby 1897-9-1 138 Lassen Mt. Shasta Comment
  HSC63968  Dimeresia howellii Teresa Prendusi 1980-7-14 Lassen Ash Valley; along Ash Valley Rd. 15 mi. W of Madeline 1524 Comment
  SEINET13703699  Diplacus mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8673 Lassen Near Old Chat. Comment
  SEINET8350435  Diplacus mephiticus A. A. Heller 1938-6-22 15188 Lassen one mile east of Westwood in the Arid Transition Life Zone. 1524 Comment
  CHSC60776  Diplacus nanus Vernon H. Oswald; Lowell Ahart 1993-6-3 5482 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 1.8 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the NW edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  CAS-BOT-BC151433  Diplacus nanus D. B. Dunn; B. J. Cox 1971-6-2 17798 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 1402 Comment
  CAS-BOT-BC154008  Diplacus torreyi Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  CHSC115787  Distichlis spicata Lowell Ahart; John Dittes 2015-7-14 20333 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  HSC9639  Distichlis spicata M. T. Milligan 1964-8-6 199 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  SBBG115909  Distichlis spicata J. T. Howell 1973-7-10 49764 Lassen near Westwood 1554 Comment
  SD7836  Dodecatheon Mrs. R. M. Austin August 1882 Lassen Kings Valley Comment
  CHSC6234  Dodecatheon jeffreyi M. West 1946-6-20 Lassen Meadow above Grasshopper Valley. 1828 Comment
  UC1137648  Dodecatheon pulchellum A. Simontacchi 1940-5-10 695 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  CHSC60825  Downingia bacigalupii Vernon H. Oswald; Lowell Ahart 1993-6-28 5612 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  JEPS127280  Downingia bacigalupii Lowell Ahart, John Dittes 2016-7-13 21116 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
  UC1229824  Downingia bacigalupii John Weiler 1959-4-22 59203 Lassen 11.1 mi se Eagle Lake (along county highway A-1) Comment
  UCD127933  Downingia bacigalupii Louis K. Mann; M. Pat Mann 1963-6-18 s.n. Lassen On State Highway 139 from Susanville to Adin, 42 miles north of Susanville. Comment
  CHSC23491  Downingia bicornuta K. R. Stern 1974-6-26 5855 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  CHSC99106  Downingia bicornuta var. bicornuta Lowell Ahart; John Dittes 2008-6-20 14945 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS14500  Downingia bicornuta var. bicornuta Joseph Grinnell 1928-6-26 Lassen Poison Lake 1737 Comment
  UC1609203  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen 1.9 mi n Highway 44 (Pittville Rd (Lassen 111, 36N01), se edge of Poison Lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  JEPS114644  Downingia laeta Lowell Ahart, John Dittes 2008-6-20 14928 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  POM68166  Downingia laeta Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA0035918  Downingia laeta Lowell A. Ahart, John Dittes 2008-6-20 14928 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA39757  Downingia laeta P. A. Munz 1947-5-20 11892 Lassen Milford 1265 Comment
  CAS-BOT-BC157796  Drymocallis lactea var. lactea John Thomas Howell 1934-6-14 12156 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  JEPS120867  Elatine Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18752 -A 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
  JEPS120897  Elatine Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18752 Lassen Near pond, about 80 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCR198140  Elatine chilensis Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  RSA252456  Elatine gracilis R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39135 Lassen Said Valley Reservoir. Comment
  UC1101532  Elatine triandra Verne Grant and Irving Schneider 1947-8-1 8223 Lassen w end Section 19 (irrigation ditch running sw into State Fish and Game nesting area); Madelaine Plain Comment
  CAS-BOT-BC113618  Eleocharis acicularis George Wilson Gillett 1957-7-29 952 Lassen Mud flats along shore of Snag Lake, near iast inlet. 1850 Comment
  JEPS28331  Eleocharis acicularis George W. Gillett 1957-7-22 878 Lassen Snag Lake Lassen Volcanic National Park (margin of gravel bars along s shore) 1844 Comment
  UC1836  Eleocharis acicularis J. Burtt Davy Jun 17-24 1897 3290 Lassen Honey Lake Valley Comment
  CHSC60449  Eleocharis acicularis var. acicularis Mary Ann Showers 1992-6-13 2548 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC117180  Eleocharis bella Lowell Ahart; John Dittes 2016-6-7 21015 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  RSA0009565  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CHSC112798  Eleocharis macrostachya Lowell Ahart; John Dittes 2013-7-22 18848 Lassen West margin of a duck field, about 30 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA252444  Eleocharis parishii Robert F. Thorne, C. W. Tilforth 1969-9-6 39258 Lassen along Long Valley Creek, c. 14 mi. SE of Milford. 1311 Comment
  HSC22948  Eleocharis parishii John Pratt 1970-6-21 36 Lassen 1707 Comment
  SEINET10521752  Elymus cinereus var. pubens Billy Joe Cox 1971-6-2 Cox 3232 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus- Jeffery Pine on mountain range to west at approx. same alt. 1250 Comment
  CAS-BOT-BC227482  Elymus elymoides John Thomas Howell; Gordon H. True 1973-8-1 50197 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CAS-BOT-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  JEPS128418  Elymus elymoides Jennifer Mueller 2017-7-18 CA 320 -193 Lassen Near Long Springs on Cold Springs Mountain. Comment
  SEINET12745634  Elymus elymoides F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  UCD61417  Elymus elymoides Beecher Crampton 1954-7-5 2065 Lassen Along Hwy. 36, 5.5 miles west of Susanville. 1447 Comment
  CHSC25916  Elymus elymoides subsp. elymoides K. R. Stern 1967-6-30 2446 Lassen West central side of Eagle Lake. 1554 Comment
  CHSC118823  Elymus elymoides var. californicus L. P. Janeway; B Castro 2015-6-5 11762 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  JEPS126494  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-5 CA 350 -73 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
  UC1037105  Elymus glaucus Leo Whitney 1934-7-15 3003 Lassen ca 15 mi w Eagle Lake; Lassen National Forest, Crater Lake 2133 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
  CHSC112797  Elymus repens Lowell Ahart; John Dittes 2013-7-23 18894 Lassen About 20 feet southwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  UCD62565  Elymus repens J. V. Langdon 1957-7-1 Lassen Susanville. Comment
  UC1136823  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  UC188858  Elymus trachycaulus Milo S. Baker Lassen mts. s Dixie Valley Comment
  UC506972  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 230 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  UC70687  Elymus trachycaulus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  UCD32662  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CHSC92829  Elymus trachycaulus subsp. subsecundus Lowell Ahart; John Dittes 2005-6-1 11880 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS114765  Elymus trachycaulus subsp. subsecundus Lowell Ahart, John Dittes 2008-6-20 14908 Lassen about 100 yds W of where the levee road crosses Bog Valley Canal, in Big Valley, about 4 mi (air) NE of the Headquarters at Ash Creek State Wildlife Area, about 7 mi (air) NE of Bieber 1263 Comment
  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
Read comments Oct 5 2019
  JEPS94703  Ephedra viridis Vernon H. Oswald and Lowell Ahart 1998-5-22 9103 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  JEPS94829  Ephedra viridis Vernon H. Oswald and Lowell Ahart 1998-5-22 9103 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  NY70786  Ephedra viridis A. J. Cronquist 1959-6-17 8477 Lassen 6 miles northeast of Susanville 1828.8 Comment
  NY70804  Ephedra viridis D. W. McNeal 1980-6-1 2337 Lassen Above Highway 139, 5.4 miles north of the junction of Highway 36 in Susanville Comment
  SEINET3868652  Ephedra viridis D. W. McNeal 1980-6-1 2337 Lassen Above Hwy. #139, 5.4 mi. n. of the jct. of Hwy. #36 in Susanville.; 0 Comment
  SEINET6628957 Image available Epilobium A. W. Harvilik 1967-1 4 Lassen jct. of 5.19 with road to Mutters Meadow 152 Comment
  JEPS121253  Epilobium brachycarpum Lowell Ahart 2013-7-22 18845 Lassen W margin of duck field, about 10 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA123007  Epilobium brachycarpum L. R. Short, J. Warren 1936-6-23 S- 454 Lassen Burgess Spring Exp. Range, Lassen forest 1744 Comment
  SEINET12539651  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  HSC22866  Epilobium brachycarpum John Pratt 1970-6-14 17 Lassen Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 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
  CHSC118849  Epilobium campestre L. P. Janeway 2015-8-9 11821 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01 - the road to Patterson Campground); 0.7 air-km west of Long Valley, 5.3 air-km northeast of Blue Lake. 2179 Comment
  RSA0039527  Epilobium campestre Lowell A. Ahart, John Dittes 2012-7-9 18285 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29945  Epilobium ciliatum subsp. ciliatum Robin L. Ondricek 1978-8-6 115 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  RSA0105579  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  HSC26606  Epilobium hallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19179 Lassen Harvey Valley near Cone Springs Comment
  CHSC61052  Epilobium oregonense Vernon H. Oswald; Lowell Ahart 1993-8-3 5741 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  SEINET10453023  Epilobium oregonense Mary Susan Taylor 1974-1 Taylor 279 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  GMDRC6955  Epilobium pallidum J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31430 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  CDA38101  Epilobium palustre Gordon Leppig 1998-8-17 1049 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  SD219071  Epilobium pygmaeum R. F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395, ca. 5.0 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  HSC82195  Epilobium torreyi Thomas W. Nelson, Jane P. Nelson 1980-7-6 6050 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC1122350  Epilobium torreyi A. Simontacchi 1940-6-30 905 Lassen 2.2 mi ene Ebey Lake 1699 Comment
  RSA508633  Epipactis gigantea Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  CHSC66368  Equisetum arvense Vernon H. Oswald; Lowell Ahart 1996-6-17 7821 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 a pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CAS-BOT-BC57306  Equisetum laevigatum M. S. Taylor 1982-5-29 4566 Lassen the jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno Comment
  CHSC4941  Equisetum laevigatum W. Lessig 1967-7-10 15 Lassen Coll. 3 1/2 mi. se Eagle Lake Biology Station, Upper Murrer's Meadow. 1524 Comment
  CAS-BOT-BC57301  Equisetum laevigatum Barbara Shervanick 1974-5-7 1262 Lassen Highway 395, just south of Milford, Cascade Range 1371 Comment
  RSA719899  Equisetum laevigatum Michael A. Vincent, K. Levings 2006-7-29 12905 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  SEINET10530241  Equisetum laevigatum Mary Susan Taylor 1982-5-29 Taylor 4566 Lassen 4900 ft. T22N R17E sw/sw sec 23. Loyalton quad. In sandy rd embankment at jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno. 1493 Comment
  SBBG115910  Eragrostis cilianensis J. T. Howell 1973-7-10 49793 Lassen city park, Susanville 1295 Comment
  SEINET4568218  Eragrostis cilianensis G. Schoolcraft 1998-8-4 2802 Lassen Along HWY 395 at Viewland Monument 1378 Comment
  SEINET8267478  Eremogone congesta L. E. Detling 1936-6-28 1757 Lassen near Susanville. Comment
  CHSC87106  Eremogone congesta var. congesta L. P. Janeway 2001-6-20 7191 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  RSA0057705  Eremogone congesta var. subcongesta L. P. Janeway 2001-6-20 7199 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
  SEINET8821547  Eremogone congesta var. subcongesta G. Schoolcraft 1998-6-30 2746 Lassen N end of Fort Sage Mountains. 1859 Comment
  CAS-BOT-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC159992  Eremothera boothii subsp. alyssoides G. L. Stage 1962-6-14 62 -131 Lassen 19 miles southeast of Ravendale Comment
  CAS-BOT-BC159998  Eremothera boothii subsp. alyssoides Philip A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  CAS-BOT-BC160000  Eremothera boothii subsp. alyssoides Elmer I. Applegate 1934-5-4 8918 Lassen Secret Valley Comment
  CAS-BOT-BC160001  Eremothera boothii subsp. alyssoides David D. Keck; J. Clausen 1935-6-24 3741 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC64793  Eremothera boothii subsp. alyssoides Vernon H. Oswald 1995-5-24 6765 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of the Amedee Mtns. 1249 Comment
  CAS-BOT-BC160008  Eremothera boothii subsp. boothii Louella Bass 1978-6-21 s.n. Lassen East side of Honey Lake Valley near Wendel Comment
  UC526132  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen near Plumas Junction Comment
  CAS-BOT-BC515170  Eriastrum signatum Alice Eastwood; John Thomas Howell 1940-6-16 8331 Lassen Near Susanville Comment
  CAS-BOT-BC515171  Eriastrum signatum Lewis S. Rose 1934-7-25 34410 Lassen Reno Jct. 1371 Comment
  JEPS124583 Image available Eriastrum sparsiflorum J. Yamanaka 1965-7-12 123 Lassen Highway 395, 2.6 miles No. of Milford Habitat. Comment
  JEPS124585 Image available Eriastrum sparsiflorum Dixie Funnell 1965-7-12 127 Lassen 2.6 miles north of MIlford. Comment
  JEPS69071  Eriastrum wilcoxii W. L. Jepson 1918-8-2 7792 Lassen Long Valley 1219 Comment
Read comments Nov 7 2008
  SEINET11836160  Ericameria Unknown 1948-1 s.n. Lassen near Doyle on Rt. 395 1219 Comment
  POM40990  Ericameria bloomeri Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  SEINET10723416  Ericameria bloomeri Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 155 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC298180  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel, on road to Janesville 1219 Comment
  CAS-BOT-BC298182  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  JEPS95709  Ericameria nauseosa var. oreophila Vernon H. Oswald and L. Ahart 1995-8-14 7181 Lassen T31N R15E NW1/4 Sec. 11, 4460 ft, Modoc Plateau, Sagebrush Scrub. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville 1359 Comment
  CAS-BOT-BC294184  Ericameria nauseosa var. speciosa Louella Bass 1973-9-4 EV 133 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC294185  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50696 Lassen South and southeast of Diamond Mt. 2286 Comment
  UC1136974  Ericameria nauseosa var. speciosa L. R. Short 1936-9-14 S- 502 Lassen Burgess Spr. Exp. Range Lassen Forest 1761 Comment
  POM33280  Erigeron aphanactis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC135492  Erigeron aphanactis var. aphanactis unknown 1892-6-22 Lassen Honey Lake Comment
  JEPS80681  Erigeron bloomeri L. R. Heckard and T. I. Chuang 1981-6-10 5532 Lassen North Eagle Lake Campground Eagle Lake (nw corner of lake) 1524 Comment
  CDA4405  Erigeron bloomeri T. C. Fuller 1963-6-1 10632 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  SEINET3132724  Erigeron bloomeri J. L. Strother 1970-5-23 952 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  CHSC67162  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge n of a drainage. 1584 Comment
  GMDRC7734  Erigeron bloomeri var. bloomeri J. M. Andre, G. Clifton 1993-6-1 33411 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  JEPS89690  Erigeron bloomeri var. bloomeri Dean Wm. Taylor with Glenn Clifton 1990-6-12 10878 Lassen Forest Road 39N08 just as the road enters the valley as traveling from Adin (Ash Valley, Modoc Plateau); Modoc Plateau, Ash Valley, Forest Road 39N08 1554 Comment
  UC1136835  Erigeron bloomeri var. bloomeri L. R. Short and J. Warren 1936-6-23 S- 451 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1741 Comment
  UC1536740  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-27 559 Lassen near top Hot Spring Mt. 1828 Comment
  UCR45383  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Road just south of bridge over Ash Creek, & c. 16 mi. SE of Adin; 2.5 mi. SE of junction with main road 1555 Comment
  CAS-BOT-BC294486  Erigeron bloomeri var. bloomeri Clarence R. Quick 1964-7-29 64 -90 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CAS-BOT-BC297144  Erigeron concinnus var. concinnus Ella Dales Cantelow 1940-5-31 3086 Lassen e. of Bieber 1219 Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline 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
  JEPS88241  Erigeron divergens Vernon H. Oswald and Lowell Ahart 1996-6-17 7808 Lassen gravel bar on edge of river e Devils Corral Trailhead (Bizz Johnson Trail) (w of 6.0 milepost, trailhead located off of Hwy 36, ca. 7 mi w of Susanville); Modoc Plateau, Susan River 1402 Comment
  POM33001  Erigeron divergens Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SEINET5708465 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  SEINET5708466 Image available Erigeron divergens Lowell E. Urbatsch, Vesna Karaman, Castro 2000-1 7708 Lassen Along CA 139. Willow Creek.; Willow Creek 1428 Comment
  UC1924228  Erigeron divergens Debra Valov 2004-6-8 2004246 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC296899  Erigeron eatonii var. eatonii A. M. Vollmer; L. Beane 1953-7-1 50 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  RSA702593  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  CAS-BOT-BC300426  Erigeron elegantulus Mrs. C. C. Bruce 1898-6-1 2182 Lassen Madeline Plains Comment
  JEPS95131  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  RSA700234  Erigeron filifolius var. filifolius L. P. Janeway 2001-6-20 7201 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
  UC2027204  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen National Forest. N of 30N61, W of A21. Swain Mountain quadrangle Comment
  CAS-BOT-BC295471  Erigeron lassenianus var. lassenianus Lassen 1927 G. S. Crew 1927-6-25 34 Lassen Lassen National Forest. Norval Flat 1747 Comment
  CAS-BOT-BC295470  Erigeron lassenianus var. lassenianus Clarence R. Quick 1961-6-21 61 -21 Lassen Adjacent to Road 21, Blacks Mt. Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC295472  Erigeron lassenianus var. lassenianus Parkison 1916-6-21 40 Lassen Lassen National Forest. Near Patterson Cabin 1706 Comment
  CAS-BOT-BC295505  Erigeron linearis John Thomas Howell 1934-6-14 12137 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC92678  Erigeron linearis L. P. Janeway; B. Castro 2005-7-10 8485 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  JEPS41565  Erigeron linearis F. W. Peirson 1926-6-24 6855 Lassen Madeline Plain Comment
  JEPS94538  Erigeron linearis Vernon Oswald and Lowell Ahart 1997-6-24 8608 Lassen 0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43 1889 Comment
  UC206218  Erigeron linearis Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC31442  Erigeron linearis Mrs. R. M. Austin Jun 1894 Lassen lava bed w Willow Creek Comment
  HSC63770  Erigeron linearis Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  CHSC77195  Erigeron nevadincola G. Schoolcraft 1998-6-30 Lassen N. slope of Ft. Sage Mtns. 1950 Comment
  CHSC5209  Erigeron philadelphicus M. West 1946-7-10 Lassen Pine Creek, Eagle Lake. 1584 Comment
  SEINET8667852 Image available Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  CDA34230  Erigeron pumilus subsp. intermedius L. Ahart, J. Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  CHSC105241  Erigeron pumilus subsp. intermedius Lowell Ahart; John Dittes 2010-7-31 16986 Lassen About 3,330 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS114759  Erigeron pumilus subsp. intermedius Lowell Ahart, John Dittes 2008-6-19 14867 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS22799  Erigeron pumilus var. intermedius George A. Fischer and Irwin H. Johnson 1933-7-12 F 209 Lassen Grass Valley Lassen Forest, Grass Valley 1700 Comment
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UCD18963  Erigeron pumilus var. intermedius R. E. Francis 1965-7-7 8 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 Comment
  UC584286  Erigeron tener G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2285 Lassen summit Thompson Peak (s of Janesville) 2346 Comment
  CAS-BOT-BC241568  Eriogonum baileyi var. baileyi Margaret Williams; Steven Williams 1974-7-26 74 -L-25 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SEINET5328378  Eriogonum baileyi var. baileyi M. J. Williams 1974-7-26 74 -L-25 Lassen 2 mi. west of Hallelujah Junction, south of Hwy. 70. 1494 Comment
  UC1409081  Eriogonum baileyi var. baileyi R. F. Thorne and C. W. Tilforth 1969-9-6 39260 Lassen ca. 0.7 mi se along Hwy 395 Milford (w of Honey Lake) 1280 Comment
  CHSC7738  Eriogonum caespitosum Beverley J. Wise 1969-5-3 78 Lassen 3.4 mi east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1584 Comment
  NY242503  Eriogonum collinum N. H. Holmgren 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale. Comment
  POM253227  Eriogonum collinum A. A. Heller 1938-6-23 s.n. Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  RSA238630  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along Hwy 395, 4.5 miles south of Ravendale Comment
  UC1553394  Eriogonum douglasii var. douglasii G. Schoolcraft 1988-6-7 1812 Lassen 14 air mi ne Ravendale 1737 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
  CAS-BOT-BC255743  Eriogonum elatum var. villosum Clare B. Hardham 1969-8-28 17459 Lassen West of Janesville, Sierra Nevada Comment
  CAS-BOT-BC263044  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  CAS-BOT-BC263045  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  CHSC100890  Eriogonum maculatum L. P. Janeway 2008-8-2 9532 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  NY281710  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 1 mile W of Ca-NV stateline along Smoke Creek Road. 1341.1 Comment
  UC1533147  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 0.1 mi w along Smoke Creek Road CA-NV stateline 1341 Comment
  CAS-BOT-BC267342  Eriogonum marifolium var. marifolium Clare B. Hardham 1971-8-22 18402 Lassen Diamond Mountain 2346 Comment
  CDA22621  Eriogonum microthecum var. ambiguum L. Ahart 2003-8-17 10518 Lassen 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. Comment
  CAS-BOT-BC268688  Eriogonum microthecum var. laxiflorum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50656 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CHSC78482  Eriogonum microthecum var. laxiflorum Vernon H. Oswald 2000-7-31 9947 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  SEINET245664  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mi west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  RSA518444  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M- 4 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  SBBG94822  Eriogonum nudum var. nudum G. K. Helmkamp 1990-9-23 G- 11 Lassen N of Ravendale 1676 Comment
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. Comment
  CAS-BOT-BC269826  Eriogonum nudum var. pubiflorum John Thomas Howell 1934-7-8 12498 Lassen Spalding's, Eagle Lake Comment
  RSA0030655  Eriogonum nudum var. pubiflorum Anthony Baniaga 2011-8-3 484 Lassen Lassen National Forest. Along Highway 44, S of 31N21 1800 Comment
  SEINET530683  Eriogonum nummulare Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  SEINET5333908  Eriogonum ochrocephalum D. Tonenna 2007-8-20 s.n. Lassen Hwy 395, 6 mi north of Halellujah Junction along west side of road. 1450 Comment
  SEINET524403  Eriogonum ochrocephalum var. ochrocephalum Paul A. Opler 2003-6-29 Lassen Quarry, 5 mi N of Hallelujah Junction, access road to west of US 295. Comment
  UCD55294  Eriogonum ovalifolium var. ovalifolium Ellen Dean; Gary Schoolcraft 2006-5-16 3115 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  RSA59736  Eriogonum prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W of Madeline on road from Adin 1677 Comment
  CHSC45490  Eriogonum spergulinum var. reddingianum Lowell Ahart; John Thomas Howell 1974-7-9 516 Lassen Along the edge of Eagle Lake. 1584 Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  NY283103  Eriogonum sphaerocephalum G. Schoolcraft 1982-6-28 737 Lassen Fort Sage Mountains 1706.9 Comment
  CHSC6226  Eriogonum sphaerocephalum var. halimioides 1944-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  JEPS93796  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen 2.7 mi se of Highway 36 (Shugru Reservoir in Bass Hill [WA] on Highway 395 between Susanville and Janesville); Shugru Reservoir, Bass Hill 1243 Comment
  NY283113  Eriogonum sphaerocephalum var. halimioides H. D. D. Ripley 1943-6-13 5710 Lassen South of Johnstonville 1325.9 Comment
  RSA702603  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2004-6-26 8142 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UCR55662  Eriogonum sphaerocephalum var. halimioides G. R. Ballmer 1988-7-19 s.n. Lassen Warner Mtns, vicinity of Blue Lake 1982 Comment
  CHSC1330  Eriogonum sphaerocephalum var. sphaerocephalum V. Holt 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  SEINET11261384  Eriogonum sphaerocephalum var. sphaerocephalum Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km (11.5 mi) airline distance east-southeast of Ravendale.; 0 1830 Comment
  SEINET530688  Eriogonum strictum Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  NY283239  Eriogonum strictum subsp. proliferum H. D. D. Ripley 1943-6-13 5711 Lassen South of Johnstonville 1325.9 Comment
  CHSC13455  Eriogonum strictum var. anserinum J. Pitts 1972-6-22 248 Lassen 70 yds. n of Eagle Lake Biology Station. Comment
  JEPS114744  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2008-6-19 14893 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
  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
  NY283169  Eriogonum strictum var. anserinum A. J. Cronquist 1959-6-17 8473 Lassen 50 miles southeast of Susanville. 1371.6 Comment
  CAS-BOT-BC267896  Eriogonum umbellatum Alice Eastwood; John Thomas Howell 1940-6-11 7981 Lassen Big Valley Mts. Comment
  RSA782634  Eriogonum umbellatum Elizabeth A. Kempton, Tim Tibault 2006-7-29 418 Lassen Town of Chester. Vacant lot at intersection of Willow Way and Main Street 1388 Comment
  SBBG1643  Eriogonum umbellatum H. and M. Dearing 1938-6-30 2235 Lassen 20 mi N of Susanville [Hwy 44] Comment
  CHSC6227  Eriogonum umbellatum var. modocense A. Santos 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  UC1542762  Eriogonum umbellatum var. modocense Barbara Ertter 1987-7-25 7310 a Lassen ca. 22 air mi nw Susanville (Pine Creek Valley at jct. of Bridge Creek Springs Rd.); Pine Creek Valley 1737 Comment
  CAS-BOT-BC265092  Eriogonum umbellatum var. nevadense John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50673 Lassen Summit ridge of Diamond Mt., Sierra Nevada 2346 Comment
  CDA22684  Eriogonum umbellatum var. nevadense S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC71131  Eriogonum umbellatum var. nevadense Vernon H. Oswald; Lowell Ahart 1998-5-22 9115 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
  RSA65960  Eriogonum umbellatum var. nevadense F. W. Peirson 1926-6-24 6848 Lassen On Madeline Plain. Comment
  UC1032270  Eriogonum umbellatum var. nevadense H. P. Hagge 1929-9-11 22 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. 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
  CAS-BOT-BC262365  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 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
  CHSC6228  Eriogonum vimineum 1943-8-31 Lassen Susanville. Eagle Lake. 1297 Comment
  HSC63561  Eriogonum vimineum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA125290  Eriogonum vimineum Peter H. Raven, Otto T. Solbrig 1958-6-17 13272 Lassen Along Hwy 395, 19.0 miles south of Ravendale Comment
  RSA252387  Eriogonum vimineum Robert F. Thorne, C. W. Tilforth 1969-9-6 39260 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CDA22697  Eriogonum vimineum T. C. Fuller 1963-7-15 10894 Lassen Road to Pittville, 4.3 miles northwest of Little Valley. 0 Comment
  SD51226  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2 miles north of Janesville on #395 1280 Comment
  SDSU7202  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2.0 Miles north of Janesville. 1219 Comment
  CHSC23514  Eriophyllum lanatum Wayne O. Baum 1971-7-6 71 -48 Lassen E. slope of Gallatin Peak. 1950 Comment
  HSC81546  Eriophyllum lanatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 5997 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC308134  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11889 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC308135  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11896 Lassen Horse Lake Comment
  CDA5861  Eriophyllum lanatum var. achilleoides Gary Schoolcraft 1991-7-3 2199 Lassen East slope of widow mountain. Comment
  CAS-BOT-BC308139  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-29 64 -85 Lassen Blacks Mt. Experivmental Forest 1798 Comment
  RSA92671  Eriophyllum lanatum var. achilleoides F. W. Peirson 1926-6-24 6849 Lassen Several miles southward from the Madeline Plain Comment
  CAS-BOT-BC301528  Eriophyllum lanatum var. integrifolium Ralph K. Gierisch 1968-7-11 3355 Lassen Lassen National Forest. Highway 44 1737 Comment
  CHSC58831  Eryngium alismifolium Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  POM83000  Eryngium alismifolium Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  RSA22014  Eryngium alismifolium J. T. Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  UC1487305  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  UC1587182  Eryngium alismifolium Beth Corbin 1990-7-18 588 Lassen ca. 2 mi. e. Wilson Spring (ca. 2 mi. s.w. of Little Valley, just n. of Forest Rd. 22) 1550 Comment
  CDA38323  Eryngium articulatum M. Pryor, E. E. Fix 1961-8-9 s.n. Lassen 1 mile north of Bieber. 0 Comment
  UC585097  Erysimum capitatum var. capitatum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1766 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  CAS-BOT-BC54956  Erysimum perenne Louella Bass 1973-4-30 EV 34 Lassen Elysian Valley. 1325 Comment
  CHSC99238  Erysimum repandum Lowell Ahart; John Dittes 2008-6-20 14900 Lassen About 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC55194  Erysimum repandum Gary Schoolcraft 1982-5-20 668 Lassen Along Shaffer Mountain Road near Highway 395. 1386 Comment
  SBBG15427  Erythranthe breweri H. and M. Dearing 1939-7-1 2244 Lassen 17 mi W of Susanville Comment
  CHSC71396  Erythranthe floribunda V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9258 Lassen Moll Reservoir in Ash Valley southeast of Adin. Along the upper edge of the reservoir. 1615 Comment
  SD7093  Erythranthe lewisii Austin 1880-1 Lassen Spanish Peak Comment
  CHSC37357  Erythranthe primuloides NE Heiken 1978-7-5 73 Lassen S of Eagle L., E shore of Mahogany L. 2060 Comment
  CHSC5016  Erythranthe primuloides L. G. Bennett 1967-7-14 173 Lassen 5.3 miles from the juction of Highway 44 and the Silver Lake rd. on Highway 44. 1950 Comment
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 Comment
  SFV18615  Eschscholzia caespitosa T. W. Nelson, J. P. Nelson 1990-7-14 8777 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  RSA149124  Eschscholzia californica var. crocea I. L. Wiggins, Dorothy B. Wiggins 1961-6-16 16531 Lassen Along Highway 299, overlooking Big Valley 1250 Comment
  CDA35315  Euphorbia crenulata T. C. Fuller 1963-6-12 10666 a Lassen 0.1 mile east of Clear Creek, northeast shore of Lake Almanor. 0 Comment
  JEPS124752 Image available Euphorbia serpillifolia Peter Schultz 1967-7-12 76 Lassen 14.9 miles southeast of Adin on state highway 139; 1/4 mile west of Willow Creek Campground. Comment
  JEPS97418  Euphorbia spathulata Vernon H. Oswald and L. Ahart 1995-6-19 6881 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  RSA324236  Euphorbia spathulata A. Tiehm, James Young, Raymond Evans 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 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
  CAS-BOT-BC312105  Eurybia integrifolia Alice Eastwood 1912-8-22 1914 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  JEPS31932  Eurybia radulina Duncan Dunning 1921-8-15 Lassen near, sw of Westwood Junction Facht; Robbers Creek Comment
  UC1192257  Euthamia occidentalis Malcolm A. Nobs, S. Galen Smith 1949-8-20 1488 Lassen 1 mi s of Doyle; Long Creek Comment
  UCD98885  Fallopia convolvulus R. N. Raynor 1938-7-16 s.n. Lassen Clark Dairy Ranch, 3 mi. SE Susanville. Comment
  RSA712794  Festuca L. P. Janeway 2005-7-3 8460 Lassen High Cascade Range. At junction of road 22 and road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. NAD83. 1523 Comment
  CAS-BOT-BC278428  Festuca idahoensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  JEPS127719  Festuca idahoensis Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -174 Lassen 171 on Likely Mtn. After the second tight switchback the population is off the road downslope. Comment
  POM112032  Festuca idahoensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC92651  Festuca rubra L. P. Janeway 2005-7-3 8460 Lassen High Cascade Range. At junction of Road 22 and Road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. 1523 Comment
  UCD66352  Festuca rubra L. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Comment
  UCD66360  Festuca rubra R. Tofsrud 1947-7-1 220 Lassen Cedar Cr. East of Madeline. Comment
  SJSU6457  Festuca viridula H. L. Buckalew 1961-7-10 Lassen by Blue Lake, Warner Mts 1828 Comment
  CHSC65110  Floerkea proserpinacoides Vernon H. Oswald; Lowell Ahart 1995-7-24 7127 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. 1920 Comment
  SEINET10852446  Frangula rubra Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 156 Lassen Lassen National Forest. 5.6 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1980 Comment
  RSA392153  Frasera albicaulis var. nitida Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  HSC21366  Fremontodendron californicum J. J. Wagoner 1965-4-30 49 Lassen 16 mi. W of Child's Meadow, along Hwy. 36 Comment
  CHSC7182  Fritillaria pudica Lynn R. Thomas 1969-3-17 94 Lassen Ca. 200 yds. Up hillside e of Rice Canyon Rd., 5 mi n of junction with 'Back road to Litchfield'; ca. 12 miles from Susanville. 1310 Comment
  CHSC7658  Fritillaria pudica Beverly J. Wise 1969-3-29 143 Lassen 2 mi. north of Susanville on Hwy 139. 1341 Comment
  CHSC60766  Galium aparine Vernon H. Oswald; Lowell Ahart 1993-6-14 5548 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
  UC773941  Galium aparine L. R. Short and Wm. Gansberg 1936-6-2 S- 367 Lassen Burgess Spring Experimental Range Lassen National Forest 1850 Comment
  UC585184  Galium multiflorum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1740 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  SEINET12495958  Galium multiflorum var. multiflorum G. Schoolcraft 1999-7-12 2857 Lassen North slope of Tulehead canyon near NV stateline 1737 Comment
  JEPS121280  Galium trifidum subsp. columbianum Lowell Ahart, John Dittes 2013-7-23 18895 Lassen Along S margin of the levee road, about 150 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC66866  Galium trifidum var. pusillum Vernon H. Oswald; Lowell Ahart 1996-9-10 8275 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC105246  Gayophytum diffusum subsp. diffusum Lowell Ahart; John Dittes 2010-7-31 17020 Lassen On the north side of the road, about 30 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  RSA768780  Gayophytum heterozygum L. Ahart, John Dittes 2010-7-31 17025 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
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  UC1536822  Gayophytum ramosissimum Gordon H. True Jr. 1938-7-9 908 Lassen near Termo; Madeline Plains 1524 Comment
  SEINET10936377  Gayophytum ramosissimum David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17752 Lassen 3 mi s of hallelujah jct on us hwy 395 & calif 70; along roadside and in artemesia-grassland field. Comment
  CAS-BOT-BC217396  Gentiana affinis var. ovata Louella Bass; E. Lagel 1976-9-1 s.n. Lassen Willard Creek near confluence with Susan River, Sierra Nevada Comment
  UC1037192  Gentiana newberryi Leo Whitney 1934-7-20 1505 Lassen ca 14 mi w Eagle Lake (Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  UC1037229  Geranium viscosissimum Leo Whitney 2007 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CHSC5059  Geranium viscosissimum var. nervosum B. Anthony 1967-7-4 297 Lassen Dean's Meadow. 6-8 mi. from Eagle Lake Biological Station. 1920 Comment
  JEPS44857  Geum aleppicum W. L. Jepson 1918-8-4 7810 Lassen Horse Lake 1554 Comment
  RSA122288  Geum canescens L. R. Short, J. Warren 1936-6-23 s.n. Lassen Burgess Spring Exp Range. 1765 Comment
  RSA454467  Geum canescens Roch Well 1923-7-1 s.n. Lassen 12 miles from Eagle Lake Comment
  SJSU10496  Geum macrophyllum H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  JEPS60511  Geum triflorum Brown and Wieslander 1922-7-23 22 Lassen Eagle Lake, Martin Springs Eagle Lake; , Martin Springs Comment
  JEPS96022  Geum triflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7887 Lassen 2.5 mi s of Eagle Lake (Papoose Meadows located 0.5 mi e of Eagle Lake Road (A1), e side of the meadow n of the springs); Modoc Plateau, Papoose Meadows 1633 Comment
  UC477497  Geum triflorum A. G. Brenneis 1928-7-3 14 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  RSA470172  Gilia brecciarum Christopher Davidson 1975-6-7 2757 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC64798  Gilia inconspicua Vernon H. Oswald 1995-5-24 6768 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. Flat bordering the road. 1219 Comment
  JEPS94902  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen s of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); n side of Red Rock Road 1389 Comment
  SEINET14644567  Gilia inconspicua P. B. Kennedy 1901-6-10 s.n. Lassen Constantia, railroad station. Comment
  UCD55161  Gilia inconspicua Ellen Dean 2006-5-15 3049 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  CHSC48652  Gilia modocensis Vernon Oswald 1986-5-28 2078 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
  CAS-BOT-BC523868  Gilia modocensis Alice Eastwood; John Thomas Howell 1940-6-16 8355 Lassen Constantia Comment
  RSA95714  Gilia modocensis Verne Grant, Alva Grant 1955-6-8 9666 A Lassen c. 2 miles north of Doyle. 1311 Comment
Read comments May 2 2012
  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
  UC52852  Gilia sinuata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee , Amadee (Amedee?) (Honey Lake Valley) Comment
  CHSC115832  Glyceria borealis Lowell Ahart; John Dittes 2015-7-14 20326 Lassen In Big Vallley Canal, on the east side of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1269 Comment
  CAS-BOT-BC280599  Glyceria elata John Thomas Howell; Gordon H. True 1973-8-1 50184 A Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 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
  POM38258  Gnaphalium palustre Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1536868  Gnaphalium palustre G. H. True Jr. 1938-7-14 956 Lassen near Janesville 1280 Comment
  CAS-BOT-BC302591  Gnaphalium palustre John Thomas Howell 1959-9-23 s.n. Lassen Lassen Volcanic National Park. Beach at se. end of Juniper Lake 2057 Comment
  CAS-BOT-BC302592  Gnaphalium palustre George W. Gillett 1957-9-4 1124 Lassen Lassen Volcanic National Park. Widow Lake 2072 Comment
  CHSC117760  Gratiola heterosepala Virginia Dains; Joanne Crawford 2016-6-9 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km southeast of Horse Lake, 23 km northwest of Shaffer Mtn. 1470 Comment
  CDA23422  Grayia spinosa G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2799 Lassen Secret Creek drainage, west side of Highway 395 at the foot of basaltic Saddle Rock, 15 miles (24.1 km) south of Ravendale. 0 Comment
  CHSC36443  Grayia spinosa Theresa Costa 1982-6-2 24 Lassen Along Ravendale Rd ca. 10 yd e of Horse Lake. Comment
  UC1567419  Grayia spinosa G. Schoolcraft 1989-5-31 1882 Lassen e. end of Skedaddle's (near rd. to n.) 1280 Comment
  UC1533130  Gymnosteris parvula G. Schoolcraft 1986-5-14 1567 Lassen near road at stateline in Tuledad Canyon Tuledad Canyon 1524 Comment
Read comments Nov 4 2011
  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
  UCD98138  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CAS-BOT-BC388467  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  UC1137694  Hackelia californica L. R. Short, J. Warren 1936-6-26 S 458 Lassen Burgess Spring Experiment Range; Lassen National Forest 1853 Comment
  UC1035997  Hackelia cusickii Helen K. Sharsmith 1955-6-22 4496 Lassen 5 mi beyond Blue Lake (on road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UC1483791  Hackelia cusickii Teresa Prendusi 1980-7-9 Lassen 36 m n of Susanville (on Hwy 139 and 4 m w); Grasshopper Ridge 1737 Comment
  SBBG63470  Hackelia velutina E. Rockwell -Jun-1925 53 Lassen Eagle Lake 1554 Comment
  UC1602195  Halogeton glomeratus Pryer and Fix 1948-8-17 Lassen Herlong Comment
  OBI4720  Halogeton glomeratus T. C. Fuller 1962-8-28 9475 Lassen Herlong Siding, Hoeny Lake Valley 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
  POM359823  Helianthella californica var. nevadensis L. S. Rose 1933-7-2 33268 Lassen Westwood. 1524 Comment
  SJSU8893  Helianthella californica var. nevadensis W. Savage 1971-7-20 723 Lassen c. 2 mi N of Milford near W side Honey L 1264 Comment
  CHSC71860  Helianthus bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Roadside. 1255 Comment
  CAS-BOT-BC305661  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC305662  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 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
  CAS-BOT-BC305660  Helianthus cusickii Philip A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale 1310 Comment
  CDA6549  Helianthus cusickii T. C. Fuller 1959-7-7 2910 Lassen Highway 395 and railroad, 5 miles north of road to Wendel. 0 Comment
  CHSC68846  Hemizonella minima Vernon Oswald; Lowell Ahart 1997-6-24 8592 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). On the edge of the road. 1685 Comment
  SEINET11197274 Image available Hemizonella minima G. Schoolcraft 1997-6-26 2601 Lassen W of Hwy 395 between Janesville and Milford 1676 Comment
  SEINET11119304  Heracleum lanatum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  JEPS1678  Hesperochiron californicus G. S. Crew and C. S. Robinson 1927-1 10 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  UC1609376  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1993-5-12 5377 Lassen 3.5 mi nw of A21 to Westwood (Canal crossing Highway 44, on the n side of the road and on the e side of the canal) 1729 Comment
  CHSC4793  Hesperolinon micranthum R. Carter 1967-6-29 570 Lassen On rd to Murrer's Meadow. Eagle Lake. 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
  UC1523712  Hesperolinon micranthum Gary Schoolcraft 1981-6-25 478 Lassen East Fork of Wellard Creek 1584 Comment
  UC1601274  Hesperolinon micranthum Leo Whitney 1934-9-5 1889 Lassen between Susanville and Westwood; Lassen National Forest, Fredonyer Pass 1706 Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC17267  Hesperolinon micranthum Mrs. Brandegee Lassen Comment
  UC641664  Hesperostipa comata G. L. Stebbins Jr. 1939-7-9 2939 Lassen 4 mi s Doyle (near hwy) 1310 Comment
  UCD32669  Hesperostipa comata Beecher Crampton 1954-7-6 2071 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  UCD107428  Heterocodon rariflorum Tim Kuhn 2006-7-19 12 Lassen Eagle Lake Ranger District. Comment
  NY783486  Heuchera rubescens G. Schoolcraft 1979-6-21 82 Lassen Wendel Canyon 1585.0 Comment
  CHSC5212  Hieracium albiflorum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  UC506909  Hieracium albiflorum George A. Fischer, Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen National Forest 1737 Comment
  CAS-BOT-BC312416  Hieracium albiflorum George W. Gillett 1957-7-24 895 Lassen Between Cameron Meadow and Snag Lake 1950 Comment
  CAS-BOT-BC318715  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  SBBG8442  Hieracium scouleri H. and M. Dearing 1938-7-1 2247 C Lassen near Westwood Comment
  UC1069611  Hieracium scouleri A. Simontacchi 1940-7-2 937 Lassen 6.3 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quad. 1950 Comment
  UC1191967  Hippuris vulgaris Malcolm A. Nobs and S. Galen Smith 1949-8-20 1471 a Lassen 1 mi. s. Milford (Honey Lake Valley); Honey Lake Valley Comment
  JEPS124840 Image available Hippuris vulgaris B. Corwin 1964-6-30 119 Lassen 16 miles north of Susanville. 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
  HSC63966  Holodiscus microphyllus var. glabrescens Teresa Prendusi 1980-7-10 Lassen N face of Little Fredonyer Peak, above Horse Lake 1768 Comment
  UC53616  Hordeum brachyantherum subsp. brachyantherum J. Burtt Davy Jun 17 1897-Jun 24 1897 3366 Lassen Adobe Meadows Honey Lake Valley, Adobe Meadows Comment
  CHSC5060  Hordeum jubatum D. L. Stites 1967-6-25 54 Lassen Ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  UCD85742  Hordeum jubatum Gerald Dickinson 1963-7-15 99 Lassen Ravenville. US Hwy 395. 1618 Comment
  UCD55288  Hordeum murinum subsp. glaucum Ellen Dean; Gary Schoolcraft 2006-5-16 3107 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  CAS-BOT-BC284896  Hordeum murinum subsp. leporinum John Thomas Howell 1973-7-10 49801 Lassen Susanville 1295 Comment
  UC12398  Horkelia fusca subsp. parviflora M. S. Baker and Frank Nutting 1894-7-28 Lassen mtns to s Eagle Lake Comment
  SEINET10483367  Horkelia fusca subsp. tenella Mary Merello 1993-6-28 Merello 752 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
  CAS-BOT-BC55478  Hornungia procumbens Arnold Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north northwest of Wendel. 1231 Comment
  SEINET5342520  Hornungia procumbens A. Tiehm 1980-1 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs, 1.1 air miles NNW of Wendel. 1231 Comment
  CHSC7684  Hydrophyllum capitatum var. alpinum Beverley J. Wise 1969-5-9 47 Lassen 11.0 mi. west of Susanville on Forest Service road 8246, off Hwy. 36. 1524 Comment
  UC614681  Hydrophyllum capitatum var. alpinum L. Constance 1938-6-10 2325 Lassen 0.5 mi w Fredonyer Pass 1676 Comment
  UC773900  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen Burgess Spring Experiment Range; Lassen Forest 1752 Comment
  CDA40307  Hydrophyllum capitatum var. alpinum T. C. Fuller 1963-6-1 10639 Lassen 0.25 mile north of Willow Springs Campground, 3.1 miles southeast of Pittville-Susanville Road, 12.4 miles (road) south of Pittville. 0 Comment
  POM73939  Hydrophyllum occidentale Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  NY170062  Hymenolobus procumbens A. Tiehm 1986-5-12 10350 Lassen 1 road mi W of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CHSC5007  Hypericum formosum var. scouleri L. G. Bennett 1967-7-8 123 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  RSA746512  Hypericum perforatum K. M. Meyer, A. Townesmith 2007-7-19 140 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC401309  Hypericum scouleri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49436 Lassen Elysian Valley, west of Janesville 1325 Comment
  SEINET10970448  Idahoa scapigera Jeffrey Huber 1971-6-2 Huber 103 Lassen 4 mi. S. Of adin along calif. Hwy. 139 In basalt-clay; valley floor in artemesia. 1341 Comment
  JEPS128412  Iliamna bakeri Jennifer Mueller 2017-8-15 CA 370 -262 Lassen Below Tuledad VAlley Ranch take the access road into the Cottonwood Mountain towards the Dodge Fire. Comment
  NY52524  Iliamna bakeri G. Schoolcraft 1983-8-22 1142 Lassen Along Ash Valley Rd. west of Madeline 1737.4 Comment
  CHSC23502  Ipomopsis aggregata subsp. formosissima Wayne O. Baum 1970-6-30 70 -1 Lassen E. slope of Gallatin Peak. 1981 Comment
  RSA123124  Ipomopsis aggregata subsp. formosissima B. O. Schreiber 1936-6-25 S- 412 Lassen Burgess Spr. Exp. Range Comment
  UCD135760  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake campground, Lassen Park. 2057 Comment
  UC1609389  Isoetes howellii Vernon H. Oswald and Lowell Ahart 1993-6-28 5622 Lassen e Poison Lake (between Champs Flat and Harvey Valley, ne end of Little Harvey Valley, n of Hwy 44 along Rd 33N47, along small branch of Pine Creek); Little Harvey Valley 1737 Comment
  SD64329  Iva axillaris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395. 1675 Comment
  CHSC27587  Iva axillaris subsp. robustior Robert A. Schlising 1978-7-15 3318 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  CHSC63416  Ivesia paniculata V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6352 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  HSC75599  Ivesia paniculata Thomas W. Nelson, Jane Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 mi. E of Adin 1555 Comment
  JEPS91208  Ivesia paniculata Dean Wm. Taylor with Glenn Clifton 1990-6-12 10875 Lassen Ash Valley, ca. 2 miles W from junction of Spooker Road with Forest Road 39N08 Comment
  SEINET3860245  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 mi W of Madeline.; 0 Comment
  UC1100949  Juncus balticus Verne Grant and Irving Schneider 1947-7-31 8211 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  CHSC117520  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2016-7-13 21140 Lassen Scattered along the south edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest ofk Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC91305  Juncus bufonius var. bufonius Lowell Ahart; John Dittes 2005-6-2 11957 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
  JEPS107804  Juncus bufonius var. occidentalis Lowell Ahart, John Dittes 2005-6-2 11958 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
  RSA129757  Juncus confusus L. R. Short, J. Warren 1936-6-10 S- 418 Lassen MDM, Burgess Spr. Exp. Range. 1857 Comment
  UC1136937  Juncus confusus L. R. Short and J. Warren 1936-6-10 S- 418 Lassen Burgess Spr. Exp. Range Lassen Forest 1856 Comment
  CHSC60786  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1993-6-3 5474 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. In a large meadow. 1731 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
  JEPS96073  Juncus hemiendytus var. abjectus Vernon H. Oswald and Lowell Ahart 1996-6-24 7852 Lassen ca 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1609524  Juncus hemiendytus var. abjectus Vernon H. Oswald and Lowell Ahart 1993-6-3 5481 Lassen between Poison Lake and Susanville (s. side of Pine Creek Valley, Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake); Pine Creek Valley 1725 Comment
  JEPS126565  Juncus hemiendytus var. hemiendytus Lowell Ahart, John Dittes 2016-6-7 20991 Lassen 120 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
  SD71006  Juncus howellii John Thomas Howell 1959-9-23 34880 Lassen North end of Juniper Lake. 2057 Comment
  CHSC114407  Juncus laccatus Don Lepley 2014-6-17 Lassen Lassen National Forest; Eagle Lake Ranger District. Location uncertain; near one of the forks of Baxter Cfreek, probably the northernmost one, along either Road 29N07 or downslope at the A-spur. SE1/4 of NE1/4 of Sec 5 of SW1/4 of NW1/4 of Sec 4. 1767 Comment
  POM110628  Juncus macrandrus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC110769  Juncus mertensianus Clare B. Hardham 1969-8-28 17441 Lassen Sierra Nevada. West of Janesville. Comment
  UC1133741  Juncus nevadensis A. Simontacchi 1940-6-7 894 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  RSA647524  Juncus nevadensis Marion P. Harthill 1974-6-14 1518 Lassen Madeline. 152 Comment
  CHSC112772  Juncus nevadensis var. nevadensis Lowell Ahart; John Dittes 2013-7-23 18906 Lassen On the southwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS105651  Juncus occidentalis 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
  UC1133725  Juncus sphaerocarpus A. Simontacchi 1940-6-5 815 A Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  SD243239  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen Cascade Range Highlands: S side of Route 44, SE end of Grays Valley near Lodgepole. 1730 Comment
  CHSC117179  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  HSC1211  Juniperus californica M. L. Stuart 1965-5-2 55 Lassen 2 mi. N of Termo on Hwy. 395 Comment
  SD139428  Juniperus grandis F. C. Vasek 1962-9-3 day 2 Lassen State highway 36, 3.6 miles west of Ranger Station, west of Susanville 1525 Comment
  CHSC13798  Juniperus occidentalis Cathy Crittenden 1970-7-8 26 Lassen About 300 yds. From five corners on road to Mahogany Lake. 1767 Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  CHSC66  Juniperus occidentalis K. McKenzie 1928-4-10 Lassen Near Bieber in Big Valley. 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
  RSA235556  Juniperus occidentalis var. occidentalis Noel Holmgren, Patricia K. Holmgren 1970-7-28 4625 Lassen North end of Petersen Mountain, near US 395, 8 miles north of Halleluja Junction (junction with Calif. 70). 1524 Comment
  UCR4284  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-9-1 650901- 01 Lassen On Karlo Road 3.6 mi north of the junction of Karlo Road & Litchfield Road, north of Susanville 1355 Comment
  CHSC23328  Juniperus osteosperma Mark Stopher 1976-1-11 30 Lassen Ca. 52 miles south of Susanville on Hwy 395 then two miles east on Red Rock Road. 1328 Comment
  UCD133871  Juniperus osteosperma John Thomas Howell 1961-9-26 36969 Lassen Beckworth Pass east side. 1554 Comment
  SEINET11064452  Juniperus osteosperma D. Charlet 1993-7-13 1581 Lassen Fort Sage Mountains at OHV trailhead. 1490 Comment
  UC1609265  Kelloggia galioides Vernon H. Oswald and Lowell Ahart 1993-7-8 5657 Lassen se edge Poison Lake (1.9 mi n of Hwy 44, Pittville Rd (Lassen 111, 36N01), between the railroad and the lake) 1709 Comment
  NY539721  Kochia americana G. Schoolcraft 1998-9-14 2808 Lassen Honey Lake Valley northwest of Duck Lake 1219.2 Comment
  CHSC65307  Kochia scoparia Vernon Oswald; Lowelll Ahart 1995-8-14 7172 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  UC60736  Koeleria macrantha M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  UCD85786  Koeleria macrantha Beecher Crampton 1960-6-18 5727 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD85987  Koeleria macrantha R. Tofsrud 1947-7-1 214 Lassen 13 miles E of Madeline. Comment
  UC891450  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen about a mile e of Westwood Comment
  UCR67465  Lactuca saligna George K. Helmkamp 1990-9-23 G- 13 Lassen north of Ravendale 1677 Comment
  UCD133500  Lactuca tatarica subsp. pulchella W. L. Jepson 1918-8-2 s.n. Lassen lower bench of Long Valley Creek. Beckwith Pass. 1463 Comment
  UC33057  Lagophylla ramosissima M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  POM54286  Lagophylla ramosissima Milo S. Baker 1894-7-5 s.n. Lassen Dixey Valley. Comment
  CHSC106070  Lagophylla ramosissima subsp. ramosissima Lowell Ahart; John Dittes 2010-7-31 16997 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
  CDA43007  Lamium amplexicaule L. Ahart, John Dittes 2008-6-2 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
Read comments Oct 5 2019
  CHSC99304  Lamium amplexicaule Lowell Ahart; John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CDA20356  Lappula redowskii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CAS-BOT-BC352940  Lasthenia glaberrima Wm. Anderson 1960-6-6 s.n. Lassen Barrow pit along county road S. of Mapes Ranch, Henry Lake Valley Comment
  RSA0042601  Lasthenia glaberrima Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen About 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  UC1924257  Lathyrus lanszwertii var. aridus Debra Valov 2004-5-31 2004230 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC60718  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  CHSC64757  Layia glandulosa Vernon H. Oswald 1995-5-31 6817 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC91322  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
  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
  SEINET10759252  Layia glandulosa Jeffrey Huber 1971-6-2 Huber 143 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  POM361661  Layia glandulosa subsp. glandulosa Christopher Davidson 1975-6-7 2752 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC4847  Lemna minor R. Carter 1967-7-13 590 Lassen Along shore of Willow Creek. Comment
  JEPS406  Lemna trisulca W. L. Jepson 1918-8-16 8001 Lassen Merrillville 1524 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
  CAS-BOT-BC88740  Lepidium appelianum Mrs. H. C. Cantelow 1935-6-8 875 Lassen 6 miles north of Bieber. Comment
  CAS-BOT-BC88939  Lepidium dictyotum Arnold Tiehm 1980-5-29 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air mile north-northwest of Wendel. 1231 Comment
  CAS-BOT-BC89719  Lepidium latifolium John Thomas Howell 1975-7-23 51384 Lassen Sierra Nevada. Eagle Lake Cucumber Company yard. Susanville. 1295 Comment
  NY628139  Lepidium latifolium M. D. Windham 2001-6-22 2475 Lassen Northwest of Wendel in Honey Lake Valley near base of Skedaddle Mountains ca. 10.77 km WSW of the summit (7654) of Hot Springs Peak. 1231.4 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
  CHSC30604  Lepidium perfoliatum Mary Nesset 1975-7-7 1 Lassen Ravendale road next to Horse Lake. Comment
  JEPS95731  Lepidium perfoliatum Vernon H. Oswald and L. Ahart 1995-6-19 6899 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  UC1143000  Lepidium perfoliatum August L. Hormay 1934-5-15 Lassen nw of Black Mt.; Lassen National Forest, Forest and Range Expt. Sta. 1584 Comment
  UCD115849  Lepidium perfoliatum R. Tofsrud 1951-7-13 s.n. Lassen Susanville area. Comment
  CAS-BOT-BC12812  Lepidium perfoliatum Margaret Williams 1974-7-27 74 -L-48 Lassen Sierra Nevada. Near Hallelujah Junction west of Highway 70. 1493 Comment
  UC584301  Leptodactylon pungens G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2284 Lassen summit and e slope of Diamond Mt. 2194 Comment
  CHSC6205  Leptosiphon harknessii R. Gein 1946-6-25 Lassen Webbs Camp, Eagle Lake. 1554 Comment
  HSC25423  Leptosiphon harknessii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19252 Lassen Harvey Valley near Cone Springs Comment
  UC70406  Leucocrinum montanum Milo S. Baker 1891-1 Lassen near Adin; Big Valley 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
  SEINET3887154 Image available Leucocrinum montanum D. W. McNeal 1981-5-10 2488 Lassen Beside Hwy. #395, 4.3 mi. S. of Ravendale.; 0 Comment
  SEINET8480557  Leucocrinum montanum M. J. Williams 1969-5-24 s.n. Lassen Hwy 44, near Bogart Ranger Station. 1646 Comment
  CAS-BOT-BC444185  Lewisia nevadensis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13.5 miles west of Susanville. Comment
  CHSC64848  Lewisia rediviva Vernon H. Oswald 1995-6-26 6946 Lassen Modoc Plateau. Coyote Flat on Hunzinger Flat Rd. (FS 38N04) 5.6 mi s of its junction with Ash Valley Rd. (Lassen 527). 1783 Comment
  UC803892  Leymus G. L. Stebbins Jr. 1949-8-6 4007 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  UC1609507  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  UC584329  Leymus cinereus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2227 Lassen 6 mi s Ravendale 1660 Comment
  UCD64225  Leymus cinereus Beecher Crampton 1954-7-6 2070 Lassen Along US Hwy 395, 2 mi. east of Johnstonville. Comment
  UCD64276  Leymus cinereus J. Earl Coke 1931-6-30 Lassen Lassen County. 1524 Comment
  RSA647531  Leymus triticoides Marion P. Harthill 1972-6-16 778 Lassen Doyle 1372 Comment
  UC1131756  Leymus triticoides A. Simontacchi 1940-8-30 912 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  POM109716  Lilium pardalinum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  CHSC13735  Lilium washingtonianum subsp. washingtonianum S. Villard 1973-7-3 58 Lassen On west side of county road going from Susanville to Plumas National Forest, 2 miles after pavement ends. Comment
  JEPS23857  Limosella acaulis Peter H. Raven and Otto T. Solbrig 1958-6-17 13287 A Lassen along United State Highway 395, 1.8 mi s Ravendale Comment
  POM312522  Limosella aquatica Malcolm A. Nobs, S. Galen Smith 1949-7-20 1046 Lassen Bieber, along Highway 299. Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  SEINET12765227  Linanthus ciliatus Vernon H. Oswald, Lowell Ahart 1997-6-24 8605 .1 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10).; 0 1655 Comment
  JEPS58441  Linanthus harknessii G. S. Crew and C. S. Robinson 1927-7-15 76 Lassen Feather Lake, sw Lassen County Feather Lake 1737 Comment
  UC1483841  Linanthus harknessii G. Schoolcraft 1980-7-16 314 Lassen near Nelson Corral Reservoir 1804 Comment
  CHSC29952  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds on the w side of Eagle Lake. 1584 Comment
  CHSC60841  Linanthus pungens Vernon H. Oswald; Lowell Ahart 1993-6-28 5594 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  RSA713161  Linanthus pungens L. P. Janeway, B. Castro 2005-7-10 8479 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01. 1859 Comment
  CHSC36448  Linum lewisii var. lewisii Susan H. Euing 1982-6-3 2 Lassen Ca. 0.8 mi s jct forest service roads 5.16 and 5.17 heading towards 5-Corners. Comment
  CHSC5297  Linum lewisii var. lewisii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CHSC61430  Linum lewisii var. lewisii Vernon H. Oswald; Lowell Ahart 1993-8-18 5832 Lassen Lassen Volcanic National Park. Summit ridge of Mt. Conard, near the S boundary of the park. Common in loose rock approaching the highest point on the ridge from the north. 2484 Comment
  CHSC99539  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2008-6-20 14917 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS117582  Linum lewisii var. lewisii Lowell Ahart, John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast 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
  RSA0035912  Linum lewisii var. lewisii Lowell A. Ahart, John Dittes 2008-6-20 14917 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UCD35730  Linum lewisii var. lewisii Beecher Crampton 1960-6-18 5714 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  SEINET10483062  Lithophragma brevilobum Mary Susan Taylor 1974-5-4 Taylor 228 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
  CHSC61177  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1993-5-12 5385 Lassen Hwy. 44 between Old Station and A21 (to Westwood), at a cattle guard 1.6 mi NW of Rd. 32N08 to Crater Lake. 1751 Comment
  CHSC7762  Lithophragma glabrum Beverly J. Wise 1969-3-4 97 Lassen 80 yds west of Hwy 139, 1.4 mi. north of Susanville. 1584 Comment
  UC1483825  Lithophragma glabrum G. Schoolcraft 1980-4-8 201 Lassen e side Shaffer Mountain; e side Shaffer Mountain 1463 Comment
  HSC63953  Lithophragma parviflorum Teresa Prendusi 1980-4-30 1113 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  HSC75899  Lithophragma tenellum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19163 Lassen 3 mi. N of Westwood Comment
  JEPS650  Lithophragma tenellum Viola Brainerd Baird 1921-7-4 Lassen Drakesbad, (Resort) Comment
  JEPS107869  Lithospermum ruderale Lowell Ahart, John Dittes 2005-6-2 11932 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  SEINET208827  Loasaceae Jack Major 1966-6-24 Lassen Above Blue Lake, Warner Mountaind, northeastern Lassen County (ca. 18 miles airline southeast of Likely), California. 1905 Comment
  POM132862  Lomatium bicolor var. leptocarpum M. S. Baker 1894-07 s.n. Lassen Big Valley Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  UC1123089  Lomatium bicolor var. leptocarpum A. Simontacchi 1940-5-14 710 Lassen 10.2 mi E of Coyote Spring 1699 Comment
  JEPS100465  Lomatium dissectum var. multifidum Dean W. Taylor 2001-6-28 17819 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  HSC81652  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6028 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  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
  UC1123079  Lomatium macrocarpum A. Simontacchi 1940-5-17 750 Lassen 1.1 mi. s.-s.w. Dixie Spring; Halls Flat Quad. Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  UC1561383  Lomatium nevadense var. nevadense Barbara Ertter with Gary Schoolcraft 1987-6-16 7185 Lassen ridge w. Hot Springs VABM (Skeedaddle Mts., on n.e. side of Honey Lake); Skeedaddle Mts., Honey Lake 2133 Comment
  UC1123086  Lomatium nevadense var. parishii A. Simontacchi 1940-5-14 709 A Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1137734  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  UC1609377  Lomatium nudicaule Vernon H. Oswald and Lowell Ahart 1993-6-28 5617 Lassen s.-s.e. flank Harvey Mt. (n.-n.e. of Burgess Meadow, n.e. of Poison Lake, n. of Hwy. 44 on Rd. 33N06) 1798 Comment
  CHSC7745  Lomatium plummerae Beverly J. Wise 1969-4-13 117 Lassen 2.9 mi. east of junction of Hwy 395 on Las. co. rd. 338 (Smoke Creek Road). 1554 Comment
  JEPS103161  Lomatium plummerae G. Schoolcraft 1996-5-13 2519 Lassen Ft. Sage OHV area 3 mi. NE of Doyle 1402 Comment
  UC1187705  Lomatium plummerae Tracey and Viola Call 1961-5-30 1961 Lassen about 3 1/2 mi S of Ravendale Comment
  UC1479584 Image available Lomatium ravenii Gary Schoolcraft 1980-5-6 218 A Lassen Honey Lake Island 1219 Comment
Read comments Oct 26 2017
  UCR267419  Lomatium ravenii Jim Andre, Glenn L. Clifton 1993-6-14 30002 Lassen northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville 1646 Comment
  CHSC29875  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-6 31 Lassen Ca. 1 mi from ELFS where the power lines cross the road. 1572 Comment
  CHSC5018  Lomatium triternatum var. macrocarpum L. G. Bennett 1967-6-24 26 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  SEINET11130700  Lomatium triternatum var. platycarpum N. H. Holmgren, P. K. Holmgren 1978-6-11 8930 Lassen Upper Smoke Creek, S side of Observation Peak, 7.6 km (4.7 miles) NE of Rye Patch Canyon summit, 18.5 km (11.5 miles) airline distance ESE of Ravendale. 1700 Comment
  CHSC112137  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21244 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 air miles S of Adin). 1722 Comment
  RSA0049611  Lomatium vaginatum Dean Wm. Taylor 2012-6-7 21232 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  RSA584834  Lomatium vaginatum Bruce Bartholomew, M. Gilbert, L. Skog 1993-5-13 6555 Lassen Just S. of Ravendale., 40 deg. 47' 43'' N, 120 deg. 21' 40'' W. 1580 Comment
  UC1390555  Lomatium vaginatum Maynard Moe Aug 1970 278 Lassen about 0.6 mi S of Madeline (Hwy 395) 1615 Comment
  OBI81601  Lomatium vaginatum Tracey Call, Viola Call 1961-5-30 2052 Lassen Lassen-Modoc Co. line near highway U.S. 395. 1676 Comment
  RSA38457  Lomatium vaginatum P. A. Munz 1947-5-19 11880 Lassen Madeline 1677 Comment
  UC80952  Lotus nevadensis var. nevadensis T. S. Brandegee 1892-7-2 Lassen Susanville 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
  NY716011  Lotus tenuis A. J. Cronquist 1959-6-17 8474 Lassen Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville 1311 Comment
  NY748272  Lupinus W. W. Eggleston 1910-9-3 6298 Lassen Vicinity of Doyle Station 1240 Comment
  RSA0027355  Lupinus John F. Emmel 1994-7-17 1330 Lassen Summit area of Observation Peak. 2378 Comment
  UC506912  Lupinus albifrons George A. Fischer, Irwin H. Johnson 1933-7-14 F 265 Lassen Lassen Forest 1767 Comment
  CHSC37703  Lupinus arbustus M. S. Taylor 1982-8-27 5051 Lassen Crystal Peak, Diamond Mt, 6 air mi sw of Doyle. 2377 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  SEINET10490461  Lupinus arbustus subsp. arbustus Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 478 Lassen Ca 3 miles s of janesville at honey lake, rest area on us hwy 395; in Sagebrush-grass margin between jeffery pine-oak forest and honey lake 1250 Comment
  NY732866  Lupinus arbustus subsp. calcaratus P. Gallian 1971-6-2 478 Lassen Approx. 3 miles south of Janesville at Honey Lake, rest area on U.S. Highway 395 1250 Comment
  NY732867  Lupinus arbustus subsp. calcaratus K. Morris 1973-5-25 211 Lassen Collected 9.6 miles north of Milford on US 395 Comment
  SEINET10484649  Lupinus arbustus subsp. calcaratus Mary Susan Taylor 1982-7-27 Taylor 5051 Lassen T24n,r17e,sec.7 sw 1/4 sw 1/4. Constantia quad. Crystal peak area, diamond Mountains, ca 6 air miles sw of doyle. With haplopappus bloomeri, ceanothus Velutinus, wyethia mollis 2377 Comment
  POM252845  Lupinus arbustus subsp. silvicola A. A. Heller 1938-6-4 15142 Lassen In open places near Fredonyer Pass. 1707 Comment
  UC1542916  Lupinus argenteus G. Schoolcraft 1987-9-1 1773 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC208734  Lupinus argenteus var. heteranthus Walter Knight; Irja Knight 1981-5-20 4116 Lassen 27 miles S of Alturas Comment
  CAS-BOT-BC208735  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 215 Lassen Sheepshead, Lassen Forest 1500 Comment
  CAS-BOT-BC208739  Lupinus argenteus var. heteranthus Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen In lava country, 11.7 miles south of Ravendale, on U.S. 395 Comment
  CAS-BOT-BC208760  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47444 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208761  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47443 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208762  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-7-17 47699 Lassen Park Highway, Summit Lake Camp - Lassen Volcanic National Park Comment
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline Comment
  CHSC91670  Lupinus argenteus var. heteranthus L. P. Janeway 2005-7-3 8459 Lassen High Cascade Range. At junction of Road 22 and Road 35N40; 4.0 air km north-northwest of Blacks Ridge Lookout Tower. 1523 Comment
  UC1129453  Lupinus argenteus var. heteranthus E. Sawyer 1935-6-21 229 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  UC1924256  Lupinus argenteus var. heteranthus Debra Valov 2004-5-31 2004231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC83091  Lupinus argenteus var. heteranthus T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CHSC115057  Lupinus argenteus var. meionanthus Don Lepley 2013-7-2 Lassen Lassen National Forest, Eagle Lake Ranger District. Approximately 1.8 air miles west-southwest of head of Elysian Valley, northwest of Bear Flat. 2095 Comment
  SEINET10490613  Lupinus caudatus subsp. caudatus Jeffrey Huber 1971-6-2 Huber 140 Lassen 6 mi. N of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  POM212173  Lupinus confertus Carl B. Wolf 1931-9-6 2404 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  RSA0060732  Lupinus grayi Daisie Huang 2006-8-3 06080307 Lassen Slope under yellow pine forest. 1040 Comment
  JEPS81671  Lupinus lepidus var. confertus L. R. Heckard with T. I. Chuang and R. C. Bacigalupi 1968-8-12 2118 Lassen around Honey Lake just n Milford; Honey Lake just n of Milford 1310 Comment
  CHSC117063  Lupinus lepidus var. confertus Mary De Decker 1955-8-25 262 Lassen Honey Lake: Highway 395 Comment
  HSC103613  Lupinus lepidus var. confertus Thomas W. Nelson, Jane Nelson 1981-7-17 6735 Lassen Along State Route 395, 22 mi. S of Susanville at milepost 46.80 Comment
  NY747211  Lupinus lepidus var. confertus M. J. Williams 1983-7-31 83- 126 --1 Lassen Roadside near Janesville 1280 Comment
  SEINET8051636  Lupinus lepidus var. confertus G. Schoolcraft 1992-8-11 2246 Lassen Along Highway 395 near inters. of Janesville Road 1280 Comment
  CHSC60355  Lupinus lepidus var. lobbii Mary Ann Showers 1992-6-27 2602 Lassen Lassen Volcanic National Park. Pumice Flat northwest of Crescent Crater. 2194 Comment
  CHSC66243  Lupinus lepidus var. sellulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7867 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  CHSC99124  Lupinus lepidus var. sellulus Lowell Ahart; John Dittes 2008-6-19 14886 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UCSC010319  Lupinus microcarpus var. microcarpus Unknown 2016-6-7 21018 Lassen West edge of State Highway 299, Big Valley Mountains, 0.4 air miles northeast of Big Valley Summit, 5.0 air miles southwest of Bieber. 1398 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
  SEINET10450708  Lupinus nevadensis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2595 Lassen Hallelujah jct. Intersection of u.s. Hwy. 395 And state hwy. 70. In open waste Area adjacent to artemisia tridentata community. 1433 Comment
  SBBG67020  Lupinus obtusilobus S. W. Hutchinson -Jun-1925 525 Lassen Eagle Lake 1554 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
  UC82153  Lupinus polyphyllus var. burkei T. S. Brandegee 1892-7-28 Lassen Janesville Comment
  UC1523758  Lupinus saxosus Gary Schoolcraft 1983-6-7 968 Lassen near Ash Valley 1706 Comment
  SEINET10490893  Lupinus sellulus var. sellulus Billy Joe Cox 1971-6-11 Cox 3179 Lassen 8 mi. W of susanville, on calif hwy 36 along road cut in volcanic soil; pinus Jeffreyi forest. 1554 Comment
  POM110680  Luzula comosa Marcus E. Jones 1897-7-2 s.n. Lassen Near Prattville at Clear Creek. 1524 Comment
  CAS-BOT-BC231452  Lycium barbarum John Thomas Howell 1974-7-8 50512 Lassen Susanville 1295 Comment
  HSC95311  Lycopus uniflorus Gordon Leppig 1998-8-17 1051 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  CAS-BOT-BC343697  Madia elegans John Thomas Howell 1974-7-10 50556 Lassen Elysian Valley 1325 Comment
  SEINET11601319 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  SEINET11601338 Image available Madia elegans J. A. Young 1983-8-4 s.n. Lassen Janesville Comment
  UC1191847  Madia elegans Malcolm A. Nobs and S. Galen Smith 1949-8-20 1470 Lassen 1 mi s Milford (nw shore of lake); Honey Lake Valley Comment
  UC296085  Madia elegans E. B. Babcock and J. L. Collins 1926-7-21 88 Lassen near Peter Lassne's grave; Susanville Comment
  CAS-BOT-BC343693  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia Comment
  CAS-BOT-BC343062  Madia gracilis Clare B. Hardham 1969-8-28 17460 Lassen Slope west of Janesville Comment
  CHSC44881  Madia gracilis Lowell Ahart; John Thomas Howell 1974-7-9 525 Lassen Along the edge of Eagle Lake Road, about 3 miles north-west of Susanville. 1584 Comment
  RSA338583  Madia gracilis Noel Holmgren, Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale. 1677 Comment
  CAS-BOT-BC343060  Madia gracilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50653 Lassen Slope south and southeast of Diamond Mt. 2286 Comment
  RSA715984  Madia minima L. Ahart, John Dittes 2005-6-2 11940 Lassen About 1 1/2 miles northeast of the Anderson Ranch Home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 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
  JEPS121255  Malva neglecta Lowell Ahart, John Dittes 2013-7-22 18877 Lassen E of drainage, 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC810848  Marsilea C. L. Hitchcock 1940-5-26 6649 Lassen 1 mi w Bieber (overflow of Pitt River) Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  CHSC112767  Matricaria occidentalis Lowell Ahart; John Dittes 2013-7-22 18863 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS93977  Melica fugax Vernon H. Oswald 1998-6-22 9232 Lassen ca. 18 air mi. n. Westwood (Champs Flat Rd. (A-21) 1.8 mi. n. of Hwy. 44) 1749 Comment
  UC38833  Melica fugax M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC60752  Mentzelia congesta Vernon H. Oswald; Lowell Ahart 1993-6-14 5537 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
  UC1609444  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  CHSC5300  Mentzelia dispersa P. Balch 1955-7-22 Lassen Paul Bunyan Rd., 3 1/2 mi from Susanville toward Eagle Lake. 1889 Comment
  CHSC66392  Mentzelia dispersa Vernon H. Oswald; Lowell Ahart 1996-6-17 7772 Lassen Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants in dry soil on the edge of the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  JEPS107292  Mentzelia dispersa Lowell Ahart, John Dittes 2005-6-1 11872 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1121687  Mentzelia dispersa A. Simontacchi 1940-6-5 818 Lassen 8 m wnw Harvey Valley Ranger Station; Halls Flat Quad, Lassen National Forest 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
  UCD117218  Mentzelia dispersa Verne Grant; Irving Schneider 1947-8-1 8228 Lassen irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
Read comments Dec 5 2012
  POM260353  Mentzelia dispersa C. L. Hitchcock 1940-5-26 6606 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  SD130462  Mentzelia dispersa John Thomas Howell, Gordon H. True 1973-8-1 50204 Lassen The Sierra Nevada. Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville. 2164 Comment
  POM83245  Mentzelia montana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA202434  Mentzelia montana Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of Likely) 1905 Comment
  SEINET8588508  Mertensia oblongifolia M. J. Williams, G. Schoolcraft, A. Tiehm 1986-1 86- 39 -1 Lassen 1.5 road miles W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale. 1707 Comment
  CAS-BOT-BC231081  Mertensia oblongifolia Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-14 86- 39 -1 Lassen 1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale 1706 Comment
  CHSC99295  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-20 14951 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS88326  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1996-6-24 7843 Lassen Papoose Meados located ca.0/5 mi E of Eagle Lake Road (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau. 1633 Comment
  SEINET11601923 Image available Microseris laciniata subsp. laciniata D. W. Taylor 19519 Lassen Pittville; County Road 404 4.5 road miles traveling south therefrom; uncultivated rocky plain southwest of the road bend 1006 Comment
  CHSC106089  Microseris nutans Lowell Ahart; John Dittes 2010-7-31 17000 Lassen Dry meadow, on the north side of the road, about 30 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  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
  CHSC99143  Microseris nutans Lowell Ahart; John Dittes 2008-6-19 14871 Lassen Along a small wash, 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
  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
  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
  UC1037226  Mimulus breweri Leo Whitney 1933-8-14 1596 a Lassen ca. 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CHSC5905  Mimulus floribundus M. West 1946-7-1 Lassen Pine Creek, Eagle Lake. 1584 Comment
  HSC95322  Mimulus guttatus Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 533 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC526139  Mimulus guttatus John Thomas Howell 1934-7-9 12518 Lassen Bridge Creek Spring Comment
  JEPS23844  Mimulus inflatulus Peter H. Raven with Otto T. Solbrig 1958-6-17 13298 Lassen 4.8 mi s Madeline (along United States Highway 395) Comment
  UC125195  Mimulus layneae Baker and Nutting Lassen Big Valley Comment
  UC27139  Mimulus layneae M. S. Baker and Frank Nutting Lassen Big Valley Comment
  JEPS28704  Mimulus microphyllus George W. Gillett 1957-7-28 930 Lassen 1 mi above Butte Lake (on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  UC726697  Mimulus microphyllus A. A. Heller 1938-6-22 15183 Lassen 1 mi e Westwood 1524 Comment
  UC445158  Mimulus moniliformis Franklin P. Nutting July 12 Lassen Pine Creek Comment
  POM43828  Mimulus nanus var. nanus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  UC1063561  Mimulus nanus var. nanus A. Simontacchi 1940-5-14 718 Lassen 3.5 mi sw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA60367  Mimulus nanus var. nanus E. K. Balls 1950-5-9 15952 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  JEPS4302  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mi s Westwood 1524 Comment
  SBBG26857  Mimulus pulsiferae C. L. Hitchcock 1940-5-28 6611 Lassen lava beds, ca. 18 mi N of Fall River Mills on Fall River Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  RSA536394  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-18 627 Lassen Gray's Valley, 4 miles N of USFS Bogard Work Center. 1715 Comment
  JEPS19730  Mimulus suksdorfii Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 5990 Lassen 7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Rail Road, just e of U.S. Highway 395); on Southern Pacific Rail Road 1676 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
  RSA152664  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  SEINET10498937  Monardella odoratissima Mary Susan Taylor 1974-1 Taylor 275 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC221973  Monardella odoratissima subsp. glauca Alice Eastwood; John Thomas Howell 1940-6-15 8328 Lassen Round Valley Comment
  CHSC5272  Monardella odoratissima subsp. glauca J. B. Kimsey 1946-6-11 Lassen Pine Creek, near Eagle Lake. 1580 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
  UC506902  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-21 F 279 Lassen Stringer Lassen Forest 1696 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
  CHSC12413  Monardella odoratissima subsp. pallida Anne Linda Brisk 1969-7-10 42 Lassen 6 mi from ELBS on Road 5A. 1889 Comment
  CHSC25160  Monardella odoratissima subsp. pallida L. B. Barlow 1967-7-1 61 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road. 1554 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
  CHSC64782  Monolepis nuttalliana Vernon H. Oswald 1995-5-31 6808 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC99537  Monolepis nuttalliana Lowell Ahart; John Dittes 2008-6-20 14973 Lassen 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
  JEPS114695  Monolepis nuttalliana Lowell Ahart, John Dittes 2002-6-20 14973 Lassen W of where the levee road crosses Big Valley Canal, in Big Valley, about 4 mi (air) NE of the Headquarters at Ash Creek State Wildlife Area, about 7 mi (air) NE of Bieber 1263 Comment
Read comments Oct 5 2019
  SDSU5609  Monolepis nuttalliana D. F. Howe 1964-7-31 3903 Lassen Modoc National Forest 10.2 miles from entrance on road from Likely. 1768 Comment
  CAS-BOT-BC444626  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC444694  Montia chamissoi Malcom A. Nobs; S. Galen Smith 1949-7-21 1064 Lassen 4 miles north of Madeline Comment
  CAS-BOT-BC444695  Montia chamissoi Louella Bass 1973-6-17 123 Lassen Elysian Valley. 1325 Comment
  HSC75892  Montia chamissoi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19155 Lassen 3 mi. N of Westwood Comment
  NY497723  Montia chamissoi N. H. Holmgren 1978-6-11 8917 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  CAS-BOT-BC444846  Montia fontana G. Schoolcraft 1995-5-16 2478 Lassen 2 mi. east of Bull Flat. 1615 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
  CAS-BOT-BC445065  Montia linearis Louella Bass 1973-5-29 55 Lassen Elysian Valley. 1325 Comment
  CHSC68758  Montia linearis Vernon H. Oswald; Lowell Ahart 1997-5-27 8497 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. Common in moist gravel on the flood plain of a small creek paralleling the road. 1546 Comment
  JEPS94476  Montia linearis Vernon H. Oswald and Lowell Ahart 1997-5-27 8497 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling the road); Forest Route 38N04 1546 Comment
  OBI77069  Montia linearis Anthony Baniaga 2011-6-7 314 Lassen Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  CAS-BOT-BC262634  Muhlenbergia asperifolia John Thomas Howell; G. H. True 1973-8-1 50147 Lassen In Mountain Meadows east of Westwood 1554 Comment
  CAS-BOT-BC262635  Muhlenbergia asperifolia John Thomas Howell 1973-7-10 49801 Lassen Hwy. 395, 4 miles north of Doyle Comment
  HSC95294  Muhlenbergia filiformis Gordon Leppig 1998-7-12 958 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1024822  Muhlenbergia filiformis Leo Whitney 1935-6-21 3250 Lassen meadow Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  UC60840  Muhlenbergia filiformis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UCD86724  Muhlenbergia filiformis L. Whitney 1935-6-21 3250 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UCD86769  Muhlenbergia jonesii A. H. Shunk 1923-1 12 Lassen Bogard Ranger Station. Comment
  JEPS28263  Muhlenbergia richardsonis George W. Gillett 1957-7-22 871 Lassen s shore of lake Lassen Volcanic National Park, Snag Lake (margin of gravel bars) 1850 Comment
  UCD86950  Muhlenbergia richardsonis R. M. Love 1940-7-5 s.n. Lassen Madeline Plains. 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
  NY492639  Myosurus apetalus K. L. Chambers 1963-5-4 2026 Lassen Highway 395, 10 miles north of junction with Alt. Highway 40 (later renumbered as Highway 70). Comment
  UC1951072  Myosurus apetalus Debra Valov 2009-4-26 2009019 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  NY492641  Myosurus apetalus M. J. Williams 1986-5-14 8638- 3 Lassen Tuledad Canyon Road, from Duck Flat to Ravendale. 0.1 mile west of California-Nevada line. Comment
  JEPS118467  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley 1268 Comment
  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
  JEPS97413  Myosurus minimus Vernon H. Oswald and L. Ahart 1995-6-19 6895 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Abundant on the drying beds of vernally flooded wetlands on a stony and brushy flat. 1383 Comment
  RSA0062303  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  SEINET200135 Image available Myriophyllum exalbescens Verne Grant, Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
  CHSC5257  Myriophyllum sibiricum A. Santos 1946-7-12 Lassen Eagle Lake. Pine Creek Slough. 1584 Comment
  RSA233733  Myriophyllum sibiricum Robert F. Thorne, C. W. Tilforth 1969-9-5 39134 Lassen Said Valley Reservoir. Comment
  SBBG118561  Myriophyllum sibiricum R. F. Thorne with C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, near jct of Grasshopper Rd and St Hwy 139 Comment
  UC1101499  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
Read comments Aug 12 2008
  JEPS107305  Nama aretioides var. californica Lowell Ahart, John Dittes 2005-6-1 11886 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
Read comments Jun 18 2007
  HSC30194  Nama aretioides var. multiflora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19299 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UCR183191  Nama aretioides var. multiflora Jim Andre, G. L. Clifton 1993-5-28 7712 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  CHSC60745  Nama densa var. densa Vernon H. Oswald; Lowell Ahart 1993-6-14 5539 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). In dry sand between clumps of brush on the N side of the road. 1566 Comment
  SEINET7878178 Image available Nama lobbii Annetta Carter 1946-1 s.n. Lassen Altitude ca. 5500 feet; crest of ridge ten miles northeast of Susanville, Lassen County. 1676 Comment
  CHSC1241  Navarretia capillaris 1944-6-30 Lassen Grasshopper Valley, N. of Eagle Lake. 1615 Comment
  RSA702598  Navarretia capillaris 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
  UC1058209  Navarretia divaricata subsp. vividior C. McMillan 1949-6-15 1541 Lassen 5 mi w Bieber Comment
  UC1058207  Navarretia intertexta C. McMillan 1949-6-15 1540 Lassen 5 mi w Bieber Comment
  CHSC117294  Navarretia intertexta subsp. intertexta Lowell Ahart; John Dittes 2016-7-13 21131 Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC112979  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2013-7-22 18853 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS114394  Navarretia intertexta subsp. propinqua Lowell Ahart, John Dittes 2008-6-22 15031 Lassen 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
  CHSC1253  Navarretia leptalea 1951-7-8 Lassen Pit River. 1524 Comment
  JEPS69637  Navarretia leptalea subsp. leptalea Brown and Wieslander 1922-8-20 86 Lassen Martin Sprs. Eagle Lake Comment
  UC449788  Navarretia leptalea subsp. leptalea Franklin P. Nutting 1894-7-12 Lassen Pine Creek Pine Creek (Northern California) 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
  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
  CHSC23853  Navarretia leucocephala subsp. minima Glenda Foster 1975-7-12 100 Lassen At margins of Poison Lake, along road to Pitville, ca. 0.2 mi from Hwy. 44, past railroad tracks. Comment
  CHSC34344  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5868 Lassen E end of Champs Flat. Comment
  JEPS120031  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2012-7-9 18288 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127174  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2016-7-15 21213 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  NY1012788  Navarretia leucocephala subsp. minima N. H. Holmgren 1980-7-3 9470 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  UC1137571  Navarretia leucocephala subsp. minima A. Simontacchi 1940-6-7 893 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UCSB17434  Navarretia leucocephala subsp. minima Dearing, Hugh; Dearing, Margaret 1938-6-30 Lassen 50 miles south of Susanville 1219 Comment
  RSA38472  Nemophila parviflora var. austiniae P. A. Munz 1947-5-18 11860 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  JEPS1932  Nemophila pedunculata L. Constance 1938-6-10 2323 Lassen 2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); McKenzie Meadows, sw of Fredonyer Pass 1524 Comment
  UC1069207  Nemophila pedunculata A. Simontacchi 1940-5-21 759 Lassen 4.1 mi sse Blacks Mtn; Halls Flat Quad., Lassen National Forest, sse of Blacks Mtn Comment
  CHSC13638  Nicotiana attenuata M. S. Taylor 1974-6-20 269 Lassen On Pelican Point, off e shore of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC65161  Nicotiana attenuata Vernon H. Oswald; Lowell Ahart 1995-7-5 6960 Lassen Modoc Plateau. North of Honey Lake at Bull Flat on Smoke Creek Ranch Rd., 10.3 mi e of Hwy 395. At roadside. 1432 Comment
  CHSC71124  Nothocalais troximoides Vernon H. Oswald; Lowell Ahart 1998-5-22 9097 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  UC49996  Nothocalais troximoides M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  OBI48977  Oenothera deltoides Lewis S. Rose 1940-6-16 40598 Lassen Buntinville 1280 Comment
  CHSC26139  Oenothera deltoides subsp. piperi Detzer; Sacks 1977-6-27 46 Lassen On bank along Hwy. 395, ca. 4 km w of Milford. 1386 Comment
  POM38743  Oenothera deltoides subsp. piperi Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  UCR71445  Oenothera elata subsp. hirsutissima Barbara Ertter 1987-7-24 7304 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  HSC22961  Oenothera elata subsp. hirsutissima John Pratt 1970-7-18 77 Lassen 1 mi. E of Milford Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  RSA516978  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  UC1562804  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved rd) 1524 Comment
  CDA18274  Onobrychis viciifolia G. D. Barbe 1974-8-2 1940 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CDA36782  Onopordum acanthium D. B. Joley 1976-6-16 21 Lassen Grasshopper Lake. 0 Comment
  HSC93313  Oreostemma alpigenum var. andersonii Vernon H. Oswald, L. Ahart 1996-8-1 8121 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  UC1037281  Oreostemma alpigenum var. andersonii Leo Whitney 1934-9-16 1718 Lassen Bumpass Hell Lassen National Park 2529 Comment
  CHSC29921  Orobanche corymbosa Robin L. Ondricek 1978-6-27 76 Lassen At Brockman Flat Lava Beds. 1584 Comment
  CHSC65153  Orobanche corymbosa Vernon H. Oswald; Lowell Ahart 1995-7-5 6956 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  UC1137776  Orobanche corymbosa subsp. corymbosa August L. Hormay 1934-7-2 Lassen Lassen National Forest, 1/4 mile NW of Black's Mountains, Headquarters. Comment
  UC1561410  Orobanche corymbosa subsp. corymbosa Barbara Ertter 1987-7-25 7315 Lassen Ca 27 air miles NW of Susanville, FR33N02 to Harvey Valley W of junction with FR33N04. Comment
  UC1609174  Orobanche uniflora subsp. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5615 Lassen N of Highway 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. Comment
  UCD23273  Orthocarpus bracteosus Louis K. Mann; Pat Mann 1963-6-18 s.n. Lassen On State Highway 139 from Susanville to Adin, 11.8 miles north of Junction to Termo. Comment
  UCD18956  Orthocarpus cuspidatus subsp. copelandii Raymond D. Ratliff 1965-7-17 21 Lassen Lassen National Forest, Lyon's hgd., Harvey Valley Allot. 1706 Comment
  UC1137581  Orthocarpus cuspidatus subsp. cryptanthus A. Simontacchi 1940-7-8 926 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC172657  Orthocarpus cuspidatus subsp. cryptanthus Frank Stephens July, 1894 Lassen Bunch Grass Spring Comment
  RSA712893  Orthocarpus lacerus L. P. Janeway 2005-7-3 8454 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CAS-BOT-BC413245  Oxytheca dendroidea subsp. dendroidea Robert F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  CHSC101059  Packera cana John Dittes 2008-5-22 1534 Lassen Modoc Plateau; ca. 15.4 air miles southeast of Adin, ca. 3.6 air miles east of Hayden Hill, ca 0.3 mile southeast of intersection of Hwy 139 and FS Road 36N02; edge of wooded volcanic toe-slope on northeast side of Willow Creek. 485 Comment
  CHSC63381  Packera cana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6312 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  HSC81188  Packera cana Thomas W. Nelson, Jane P. Nelson 1980-7-6 5990 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  OBI49191  Packera eurycephala var. eurycephala Lewis S. Rose 1940-6-11 40505 Lassen 8 mi W of Nubieber 1219 Comment
  CHSC118854  Packera multilobata L. mP. Janeway; B. Castro 2015-6-5 11774 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end ofTuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  CHSC64760  Packera multilobata Vernon H. Oswald 1995-5-31 6797 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CAS-BOT-BC10426  Paeonia brownii 1927-7-1 47 Lassen Bogard R.S. pasture, Lassen Forest 1712 Comment
  CHSC6195  Paeonia brownii P. Balch 1955-7-22 Lassen Roadside meadow 3 1/2 mi. from Antelope Lookout. Eagle Lake. 2133 Comment
  JEPS121279  Panicum Lowell Ahart, John Dittes 2013-7-23 18909 Lassen On the E side the gravel road, N-S road W of Big Canal, 0.76 Mile N of CA 299, 4.9 air miles NE of Bieber, Big Valley. Comment
  SEINET223918  Panicum capillare subsp. capillare Arnold Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs Comment
  UCD89807  Panicum capillare subsp. hillmanii John Thomas Howell 1973-7-10 49808 Lassen Doyle. Comment
  CHSC91320  Pectocarya penicillata Lowell Ahart; John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  NY90883  Pedicularis attollens subsp. protogyna F. W. Pennell 1940-6-10 25771 Lassen Route 36. Road to Coppervale R. S., E of Westwood. Comment
  HSC68839  Pedicularis centranthera Gary Schoolcraft 1980-4-30 211 Lassen W of Shaffer Well, N of Shaffer Mtn. 1354 Comment
  UC1567381  Pedicularis centranthera G. Schoolcraft 1989-5-3 1862 Lassen nw corner of Secret Valley 1356 Comment
  UCR267420  Pedicularis centranthera Jim Andre, Glenn L. Clifton 1993-6-14 30003 Lassen northeast base of Shaffer Mountain near Secret Creek, c. 20 mi east-northeast of Susanville 1646 Comment
  OBI75871  Pedicularis groenlandica Anthony Baniaga 2011-8-9 494 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  UC1523781  Pedicularis semibarbata G. Schoolcraft 1981-6-30 487 Lassen western slopes of Roop Mountain 1889 Comment
  RSA121814  Pedicularis semibarbata G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 272 Lassen Lassen Forest. 1738 Comment
  PASA868  Penstemon confertus var. procerus Margaret Stason 1932-6-23 438 Lassen Kelleys Camp, Warners Creek Comment
  JEPS8094  Penstemon davidsonii var. davidsonii W. L. Jepson 1910-6-11 4117 Lassen Cinder Cone 2133 Comment
  CHSC4441  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-30 2451 Lassen West Central side of Eagle Lake. 1554 Comment
  CHSC60779  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1993-6-14 5513 Lassen Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. 1810 Comment
  CHSC65129  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1995-7-24 7135 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  UC477496  Penstemon deustus var. pedicellatus A. G. Brenneis 1928-7-3 12 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  CHSC57205  Penstemon gracilentus Mary Meyer 1980-7-23 Lassen Along Cleghorn Creek. 1645 Comment
  RSA408033  Penstemon gracilentus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1063167  Penstemon gracilentus H. P. Hagge 1935-9-12 27 Lassen Logan Mtn. Eagle Lake Quad., Logan Mtn. Comment
  UC1063186  Penstemon gracilentus A. Simontacchi 1940-6-20 851 Lassen 4.1 mi w Harvey Mountain Lookout; Lassen National Forest, Hall's Flat Quad. Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  UC1585967  Penstemon gracilentus Barbara Ertter 1988-7-25 7866 Lassen ca 10 air mi due s Susanville (ridge of Diamond Mts., ca 1.5 mi e of Diamond Peak, n face); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  UC1874751  Penstemon gracilentus Karl Vincent, Charlotte Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn.; Alng CA A1 at Eagle Lake Summit, ca. 7.6 mi N of jct. CA 36, ca 7 air mi NW of Susanville. 1932 Comment
  CHSC1867  Penstemon neotericus V. Holt 1943-8-1 Lassen Westwood. 1463 Comment
  JEPS11208  Penstemon neotericus Brown and Wieslander 1922-7-23 9 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  SBBG28836  Penstemon neotericus A. A. Heller 1939-7-28 15294 Lassen W of Westwood 1524 Comment
  UC1063177  Penstemon neotericus H. P. Hagge 1929-9-12 30 Lassen Logan Mtn. Eagle Lake Quadrangle 1828 Comment
  UC1523710  Penstemon neotericus Gary Schoolcraft 1981-7-9 502 Lassen e slope of Roop Mtn. Comment
  NY627261  Penstemon neotericus F. W. Pennell 1940-7-23 26248 Lassen Route 36, 3 miles northwest of Westwood 1585.0 Comment
  RSA21708  Penstemon neotericus Carl B. Wolf 1937-8-7 9068 Lassen Northern Sierra Nevada. Red Bluff -Susanville Road, 11.5 mi E of Chester. 1494 Comment
  JEPS23794  Penstemon roezlii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7138 Lassen Sandy playa beside U.S. 395 one-fourth mi s of junction of road to Smoke Creek; s of junction of rd to Smoke Creek 1341 Comment
  NY641735  Penstemon roezlii K. A. Vincent 1986-6-14 4321 Lassen Upper Long Valley; along east side of US 395, ca. 5.5 miles north of jct. US 70, ca. 13.2 road miles north of Bordertown and Nevada state line 1463.0 Comment
  NY650094  Penstemon roezlii N. H. Holmgren 1978-6-11 8920 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance. 1680 Comment
  POM252932  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass. 1646 Comment
  UC585179  Penstemon roezlii E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1764 Lassen summit of ridge e Red Rock; e of Red Rock 1828 Comment
  UCD124154  Penstemon roezlii Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Balls Canyon, south of Secret Valley. Comment
  SEINET5323614 Image available Penstemon rydbergii N. H. Holmgren, P. K. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CAS-BOT-BC239494  Penstemon rydbergii var. oreocharis Lassen 1927 G. S. Crew 1927-7-1 49 Lassen Lassen National Forest, Bogard R.S. pasture 1712 Comment
  CAS-BOT-BC239495  Penstemon rydbergii var. oreocharis Leland S. Smith 1927-7-1 49 Lassen Lassen National Forest, at Bogard Ranger Station 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
  CHSC5915  Penstemon rydbergii var. oreocharis R. Gein 1946-6-24 Lassen McCoy Flat, west of Eagle Lake. 1645 Comment
  CHSC89731  Penstemon rydbergii var. oreocharis L. P. Janeway 2004-6-26 8161 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  HSC63732  Penstemon rydbergii var. oreocharis Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N end of Eagle Lake 1707 Comment
  NY651252  Penstemon rydbergii var. oreocharis G. Schoolcraft 1985-6-12 1418 Lassen Edge of Grasshopper Valley, at south end. 1615.4 Comment
  NY651292  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen 1 mile south of Westwood 1524.0 Comment
  POM252930  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 3 miles east of Westwood. Comment
  CHSC13894  Penstemon speciosus L. E. Ray 1967-6-24 33 Lassen Collected ca. 3 mi. se ELBS, above Upper Murrer Meadow. 1524 Comment
  HSC63768  Penstemon speciosus Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N tip of Eagle Lake 1768 Comment
  HSC81485  Penstemon speciosus Thomas W. Nelson, Jane Nelson 1980-7-6 6018 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  JEPS101465  Penstemon speciosus Dean W. Taylor 1974-6-14 3721 Lassen Janesville Grade road about 4 miles SSW Janesville, Plumas National Forest 1706 Comment
  JEPS11507  Penstemon speciosus Milo S. Baker 1890-1 Lassen Honey Lake Valley Comment
  JEPS28986  Penstemon speciosus Frances D. Payne 1929-7-12 86 Lassen ridge above Lost Lake (southern end Warner Range); , ridge above Lost Lake 2286 Comment
  POM44291  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  SBBG26872  Penstemon speciosus D. D. Keck 1930-7-23 50 Lassen Susanville 1280 Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC1063512  Penstemon speciosus A. Simontacchi 1940-6-8 24250 Lassen 4.1 mi e Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  CDA33279  Penstemon speciosus T. C. Fuller 1963-6-11 10665 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  POM203061  Penstemon speciosus J. T. Howell 1934-6-10 11905 Lassen 3 miles S of Ravendale. Comment
  UCSB11863  Penstemon speciosus Haller, John 1961-6-26 Lassen Hat Creek- Susanville Road, about 14 mi E of Calif. 89 at Subway Cave 1737 Comment
  CHSC43495  Penstemon sudans Lowell Ahart; John Thomas Howell 1974-7-9 531 Lassen Along Eagle Lake Road, about 3 1/2 miles north-west of Susanville. 1584 Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  JEPS103201  Penstemon sudans G. Schoolcraft 1990-7-2 2101 Lassen top of Cold Spring Mountain 2130 Comment
  NY661806  Penstemon sudans J. T. Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432.6 Comment
Read comments Apr 21 2013
  NY661807  Penstemon sudans B. J. Ertter 1987-6-16 7178 Lassen Skeedaddle Mountains on northeast side of Honey Lake, ca. 1 mile west of Hot Springs VABM 1828.8 Comment
  UC1583939  Penstemon sudans G. Schoolcraft 1990-8-6 2121 Lassen along Bizz Johnson Trail w Susanville; along Bizz Johnson Trail w of Susanville 1310 Comment
  UC887362  Penstemon sudans Lewis S. Rose 1940-6-15 40594 Lassen 10 mi n Susanville (Round Valley); , n of Susanville 1524 Comment
  RSA0006234  Penstemon sudans Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CDA26041  Peraphyllum ramosissimum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20382 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  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
  RSA723862  Perideridia bolanderi subsp. bolanderi David H. French 1968-6-3 2882 Lassen N of Honey Lake, W side of Highway 395, 7.4 miles NE of Litchfield Comment
  SEINET11153153  Perideridia bolanderi subsp. bolanderi D. French 1968-6-3 2882 Lassen N of Honey Lake, W side of Hwy 395, 7.4 miles NE of Litchfield. Comment
  SEINET5320866  Perideridia bolanderi subsp. bolanderi Unknown 1968-6-3 2882 Lassen Northeast of Litchfield; North of Honey Lake, west side of Highway 395, 7.4 miles northeast of Litchfield. Near historical marker about emigrants and approximately 500 feet north of it Comment
  JEPS117493  Perideridia kelloggii Lowell Ahart, John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  CHSC5033  Perideridia oregana L. B. Barlow 1967-7-6 98 Lassen 2 mi. west Murrer's Ranch turn off, 14.9 mi. north of Susanville, Calif., Highway 139. 1463 Comment
  UC1143014  Perideridia oregana August L. Hormay 1934-7-2 Lassen Headquarters Lassen National Forest (1/2 mi n of Black's Mtn.) 1706 Comment
  UC20876  Perideridia oregana Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  CAS-BOT-BC423339  Peritoma platycarpa Noel H. Holmgren; Patricia K. Holmgren 1978-6-11 8928 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-southeast of Ravendale. 1700 Comment
  CHSC58505  Persicaria amphibia Vernon H. Oswald; Lowell Ahart 1992-7-9 5079 Lassen Lassen Volcanic National Park. S side of Horseshoe Lake. 1994 Comment
  JEPS1608  Phacelia adenophora Mrs. C. C. Bruce June 1898 2198 Lassen Madeline Plains 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
  RSA722579  Phacelia adenophora R. R. Halse 1975-6-20 1198 Lassen Madeline Plains, along Lassen County Road 508, 1.5 miles east of Termo. 1590 Comment
  UC1483800  Phacelia adenophora G. Schoolcraft 1980-5-30 248 Lassen along Hwy 395 n Mud Flat; Secret Valley Area 1359 Comment
  POM72872  Phacelia adenophora C. C. Bruce 1898-06 2198 Lassen Madeline Plains. Comment
  RSA0009544  Phacelia bicolor Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CHSC91316  Phacelia bicolor var. bicolor Lowell Ahart; John Dittes 2005-6-1 11886 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  HSC30187  Phacelia hastata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19262 Lassen Harvey Valley near Cone Springs Comment
  UC726924  Phacelia hastata A. A. Heller 1941-6-24 16192 Lassen 3 mi e Bieber Comment
  CHSC59550  Phacelia hastata subsp. hastata Mary Meyer 1980-7-22 519 Lassen Top of Fredonyer Peak, north of sharp bend in road at top, in rock outcrops. 2346 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
  HSC30186  Phacelia humilis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19265 Lassen Harvey Valley near Cone Springs Comment
  SEINET12765228  Phacelia humilis Vernon H. Oswald, Lowell Ahart 1997-6-24 8620 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. at a impoundment on Forest Rd. 29N43, ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary.; 0 2036 Comment
  UC24375  Phacelia humilis M. S. Baker and Frank Nutting 1894-7-7 Lassen Harvey's Ranch Comment
  RSA201834  Phacelia humilis var. humilis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake, Warner Mountains, Modoc National Forest, northeastern part of the county (ca. 18 miles airline southeast of Likely). 1905 Comment
  CAS-BOT-BC145034  Phacelia inundata John Thomas Howell 1934-7-8 12510 Lassen Spaldings resort, Eagle Lake Comment
  JEPS79142  Phacelia inundata L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  CHSC23708  Phacelia linearis R. Smallwood 1970-6-20 120 Lassen Eagle Lake Biol. Station. 5 yds e of Shepherd's Hall. Comment
  CHSC67059  Phacelia linearis Willis Ball 1969-6-28 55 Lassen Found on E.L.B.S. in dry basaltic soil. 1554 Comment
  JEPS94103  Phacelia linearis Vernon H. Oswald and Lowell Ahart 1998-5-22 9106 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  UC699732  Phacelia linearis Farris Farris 1936-6-5 Lassen Susanville 1371 Comment
  RSA152684  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16357 Lassen On hillside near northeast end of Eagle Lake. Comment
  RSA324239  Phacelia lutea Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8593 Lassen Flats n the northwest side of Shaffer Mountain. 7.5 airmiles NNW of Litchfield. 1372 Comment
  NY1056433  Phacelia lutea var. glandulifera A. Tiehm 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway 1387 Comment
  NY1056438  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale 1341 Comment
  NY1056441  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11871 Lassen 19 miles south of Ravendale 1341 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
  CHSC59552  Phacelia ramosissima var. ramosissima M> Meyer 1980-7-8 514 Lassen Amongst rocks (lg.) and junipers on top of Grasshopper Ridge. 1724 Comment
  SEINET3091893 Image available Phacelia tetramera Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  UC526141  Phacelia thermalis John Thomas Howell 1934-6-16 12222 Lassen Bieber Comment
  UC710908  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen 1 mi w Bieber; floodplain of Pitt River Comment
  RSA128306  Phacelia thermalis Peter H. Raven, Otto T. Solbrig 1958-6-17 13297 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. Comment
  RSA0068847  Phlox Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC106950  Phlox diffusa T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  POM74334  Phlox diffusa subsp. subcarinata Marcus E. Jones 1897-6-18 10489 Lassen Chat. 1524 Comment
  UC1609184  Phlox gracilis Vernon H. Oswald and Lowell Ahart 1993-5-12 5376 Lassen 3.5 mi nw A21 (to Westwood) (canal crossing Hwy 44, on the n side of the road and on the e side of the canal) 1729 Comment
  RSA304681  Phlox hoodii var. canescens Jim Shevock 1971-4-9 944 Lassen Hwy 299, E of Dana. 1067 Comment
  UC1237939  Phlox stansburyi John Weiler and A. P. Nelson May 26 1961-May 29 1961 61237 Lassen behind motel at Ravendale (on U.S. Hwy 395) Comment
  CHSC68854  Phoenicaulis cheiranthoides Vernon Oswald; Lowell Ahart 1997-6-24 8622 .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. Roadcut. 2164 Comment
  JEPS94479  Phoenicaulis cheiranthoides Vernon H. Oswald and Lowell Ahart 1997-5-27 8490 Lassen 38.2 mi n of Susanville (e side of Highway 139 at a small farm pond, 7.4 mi n of Eagle Lake Road, at a pullout along the highway); Highway 139 1627 Comment
  UC1126723  Phoenicaulis cheiranthoides A. Simontacchi 1940-5-17 753 Lassen 1.1 mi ssw of Dixie Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  UCD116141  Phoenicaulis cheiranthoides F. H. Taylor 1932-5-16 s.n. Lassen Mr. Foster's field in Big Valley. Comment
  UC1100404  Phragmites australis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1489 Lassen 1 mi s Doyle; Long Creek Comment
  UC769862  Phragmites australis R. F. Hoover 1940-10-11 4682 Lassen s Doyle; Long Valley Comment
  HSC101734  Pinus albicaulis Michael Kauffmann, Jeffrey Kane 2013-7-23 15 Lassen North-facing caldera 2360 Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  RSA719897  Pinus jeffreyi Michael A. Vincent, K. Levings 2006-7-29 12907 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  SEINET10530757  Pinus jeffreyi Jeffrey Huber 1971-6-2 Huber 141 Lassen 6 mi N of Halleluja Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  CHSC12502  Pinus lambertiana Carol Weld 1969-6-20 13 Lassen Road between Five Corners and Dean's Meadow. 1889 Comment
  CHSC84893  Pinus ponderosa L. P. Janeway; B. Castro 2003-10-5 8005 Lassen High Cascade Range. Cone Lake and trailhead parking area (trail 1.3 km southwest into Caribou Wilderness Area). 2055 Comment
  NY951542  Pinus ponderosa var. ponderosa D. H. Goldman 2004-11-6 2941 Lassen Along the N side of Forest Road 32N08, just N of Pine Creel Valley and about 1.8 miles E of the intersection with Rt. 44. Crater Lake Mountain, Lassen National Forest 1725 Comment
  UC1951062  Plagiobothrys Debra Valov 2007-5-22 2007086 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  JEPS28710  Plagiobothrys cognatus George W. Gillett 1957-7-28 941 Lassen Widow Lake Lassen Volcanic National Park (marsh area near w end) 2072 Comment
  RSA0039528  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC224968  Plagiobothrys hispidulus J. Burtt Davy 1897-6-17 3360 Lassen Adobe Meadows, Honey Lake Valley Comment
  CAS-BOT-BC228221  Plagiobothrys hispidulus John Thomas Howell 1934-6-14 12126 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  SD149177  Plagiobothrys hispidus John Thomas Howell, Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2160 Comment
  JEPS107444  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  POM73154  Plagiobothrys mollis Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1311 Comment
  CAS-BOT-BC228466  Plagiobothrys mollis Clarence R. Quick 1962-6-17 62 25 B Lassen Swains Hole, S of Blacks Mountain Experimental Station 1554 Comment
  CAS-BOT-BC423310  Plagiobothrys mollis var. mollis Mary Merello; H. H. Schmidt; L. Woodruff 1993-6-28 751 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. 1700 Comment
  CHSC99536  Plagiobothrys mollis var. mollis Lowell Ahart; John Dittes 2008-6-20 14921 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS88405  Plagiobothrys mollis var. mollis Vernon H. Oswald and Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir s.w. of Westwood (receding shore of the reservoir n.e. of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  POM71640  Plagiobothrys scouleri var. hispidulus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CHSC112751  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2013-7-22 18873 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
  CHSC117287  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2016-7-15 21217 Lassen About 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1261 Comment
  CHSC117209  Plagiobothrys tenellus Lowell Ahart; John Dittes 2016-6-7 21006 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC91317  Plagiobothrys tenellus Lowell Ahart; John Dittes 2005-6-1 11883 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
  SEINET3152918  Plagiobothrys tenellus E. K. Balls 1950-5-9 15950 Lassen 12 miles N of Doyle, hwy 395. 1295 Comment
  CHSC7769  Plantago lanceolata Beverley J. Wise 1969-6-4 74 Lassen 10 mi. east of Susanville on Hwy 395 (Janesville). 1310 Comment
  UCD124605  Plantago lanceolata P. B. Schultz 1967-7-11 70 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  SEINET6170697  Platanthera dilatata var. leucostachys C. G. Gulling 1905-1 Lassen Comment
  JEPS26656  Plectritis macrocera Lauramay T. Dempster 1961-6-17 1681 Lassen just w of Tule Mountain (Highway 395); Highway 395 1645 Comment
  RSA337278  Plectritis macrocera Noel Holmgren, Patricia K. Holmgren 1980-7-3 9488 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Hwy 395, 14.5 km (9 mi) airline distance southeast of Ravendale. 1700 Comment
  CHSC7736  Pleiacanthus spinosus Beverley J. Wise 1969-5-23 79 Lassen 33.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CAS-BOT-BC255673  Poa bolanderi John Thomas Howell; Gordon H. True 1973-8-1 50233 Lassen E slope of Diamond Range S of Susanville 2133 Comment
  CAS-BOT-BC254945  Poa bulbosa Barbara Shervanick 1974-5-9 1298 Lassen Highway 89 through Lassen National Forest, about 0.25 mile N of Bridge Campground 1371 Comment
  RSA300130  Poa compressa J. T. Howell 1974-7-10 50553 Lassen Elysian Valley; Sierra Nevada 1326 Comment
  UCD90918  Poa cusickii Leo Whitney 1935-6-10 3214 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  JEPS120878  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18780 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC107602  Poa cusickii subsp. epilis Lowell Ahart; John Dittes 2011-6-20 17507 Lassen Meadow about 40 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1583964  Poa fendleriana subsp. longiligula G. Schoolcraft 1990-5-16 2054 Lassen ca 1 mi w Muck Valley 1280 Comment
  UCD91789  Poa palustris A. A. Beetle 1941-6-28 2798 Lassen 10 miles west of Chester. 1524 Comment
  CHSC61599  Poa pratensis Arthur C. Barrett 1915-6-3 18 Lassen Plumas National Forest. Laufman Ranger Station. Meadow. 1463 Comment
  CHSC91319  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  JEPS107465  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2005-6-1 11848 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1142935  Poa pratensis subsp. pratensis A. L. Hormay 1941-6-23 15 Lassen Burgess Spring 1676 Comment
  UCR244104  Poa pratensis subsp. pratensis Jim Andre, G. L. Clifton 1993-6-9 19698 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
  CHSC106673  Poa secunda B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  JEPS126488  Poa secunda Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-14 CA 350 -075 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the Skedaddle Road, head uphill to the end of private property squares. Comment
  POM180946  Poa secunda P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia. Comment
Read comments Jan 6 2015
  SEINET175674 Image available Poa secunda Marcus E. Jones 1897-6-19 Lassen Chat, California 1524 Comment
  SJSU15450  Poa secunda subsp. juncifolia John Rawlings, Sara Timby 2014-6-15 1265 Lassen In and around BLM campground at north end of Eagle Lake. 1580 Comment
Read comments Feb 18 2015
  UCD92368  Poa secunda subsp. juncifolia J. B. Davy 17-24 Jun 1897 s.n. Lassen Honey Lake Valley. Comment
  UCD92385  Poa secunda subsp. juncifolia William Martin 1963-7-18 s.n. Lassen 3-4 miles S of Doyle. Long Valley Creek, Rowland Ranch. Comment
  UCD92393  Poa secunda subsp. juncifolia C. C. Rowland 1944-7-11 s.n. Lassen Doyle. Comment
  UCD92428  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 3370 Lassen Lassen National Forest. Near Fruit Grower's Supply Co., Camp 10. Comment
  SEINET7854865  Poa secunda subsp. juncifolia G. Schoolcraft 1995-5-22 2489 Lassen East of Skedaddle Ranch. 1554 Comment
  CAS-BOT-BC236177  Poa secunda subsp. secunda Doris Kildale Gillespie 1930-5-14 9379 Lassen Fredonia Pass near Susanville Comment
  RSA715613  Poa secunda subsp. secunda L. Ahart, John Dittes 2005-6-1 11845 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
  UC1024681  Poa secunda subsp. secunda Leo Whitney 1934-7-10 2165 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen Nat'l Forest, Harvey Valley 1737 Comment
  UC70958  Poa secunda subsp. secunda M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  UCD92016  Poa secunda subsp. secunda A. H. Shunk 1923-1 14 Lassen Hayden Hill. Comment
  UC1024873  Poa wheeleri Leo Whitney 1935-5-26 3154 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1136984  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Forest 1859 Comment
  UC1143038  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Nat'l Forest 1859 Comment
  UC73604  Polemonium occidentale Milo S. Baker 1894-1 Lassen Bridge Creek Comment
  CHSC27710  Polyctenium fremontii Robert A. Schlising 1978-7-1 3305 Lassen S of Eagle Lake at N side of Mahogany Lake. 2060 Comment
  NY182309  Polyctenium fremontii A. Tiehm 1984-6-25 8825 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to highway 81. 1828.8 Comment
  SEINET10838602  Polyctenium fremontii Arnold J. Tiehm 1988-6-2 Tiehm 11703 Lassen 6.6 mi. N. Of the wendel rd on hwy 395 from susanville to alturas, mud flats along the hwy, t30n, r15e, sec 15. Plants growing with artemesia ant the edge of silty flats which were inundated earlier in the year. Petals white to pink. Comment
  SEINET3197107 Image available Polyctenium fremontii var. confertum Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1610 Comment
  NY661121  Polyctenium williamsiae B. Corbin 2002-6-4 1078 Lassen Mud Flat-south end, East side of Highway 395. 1347.2 Comment
  SEINET5326413  Polyctenium williamsiae A. Tiehm, J. Nachlinger, M. J. Williams 1988-1 11703 Lassen On highway 395 from Susanville to Alturas, 6.6 road miles N of the Wendel Road. 1347 Comment
  CAS-BOT-BC167846  Polygala subspinosa F. J. Hermann 1972-5-17 24760 Lassen Ca. 18 miles N. Litchfield Comment
  JEPS127590  Polygala subspinosa L. P. Janeway, 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 o Mahogany Mountain. Little Hat Mountain 7.5' Quad. Comment
  JEPS50529  Polygonum amphibium var. emersum W. L. Jepson 7997 a Lassen Grasshopper Valley 1615 Comment
  UC1101133  Polygonum amphibium var. stipulaceum Verne Grant and Irving Schneider 1947-8-24 8268 Lassen Blue Lake; nw shore Comment
  JEPS120904  Polygonum aviculare subsp. depressum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18735 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC36980  Polygonum aviculare subsp. neglectum M. S. Taylor 1982-8-19 5021 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Junction. 1493 Comment
  UC1136194  Polygonum bistortoides Robert W. Gardner 1937-6-20 G- 20 Lassen Burgess Spring Halls Flat Quadrangle Comment
  UC725581  Polygonum bistortoides A. A. Heller 1938-6-4 15141 Lassen 2 mi w Westwood Comment
  UC849110  Polygonum bistortoides A. A. Heller 1938-6-23 15141 Lassen 2 mi e Westwood Comment
  CAS-BOT-BC414487  Polygonum douglasii G. Schoolcraft 1989-6-19 1918 Lassen Ash Valley RNA/ACEC Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CHSC60384  Polygonum douglasii subsp. douglasii Mary Ann Showers 1992-6-12 2528 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  UC850047  Polygonum douglasii subsp. spergulariiforme M. S. Baker and F. Nutting 1894-1 Lassen Lassen Co. Comment
  CHSC59096  Polygonum minimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5178 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Locally abundant in an opening on the brushy edge of the meadow. 1950 Comment
  UC1603210  Polygonum polygaloides J. Guardino 1993-6-8 256 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
  HSC69611  Polygonum polygaloides subsp. confertiflorum Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  JEPS83273  Polygonum polygaloides subsp. confertiflorum J. D. Jokerst 1983-7-24 1883 Lassen Madeline Plains nw of Ravendale; Madeline Plains 1584 Comment
  JEPS87370  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-8-3 5748 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  UC1520661  Polygonum polygaloides subsp. confertiflorum Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9466 Lassen along US 395 5.6 km (3.5 mi) s Madeline; Madeline Plains 1620 Comment
  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
  POM203797  Polygonum sawatchense J. T. Howell 1934-7-9 12528 Lassen Harvey Valley. Comment
  JEPS107817  Polypogon monspeliensis Lowell Ahart, John Dittes 2005-6-2 11967 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
  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
  UC1100378  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1478 Lassen 1 mi n Doyle (Honey Lake Valley, marshy banks of Long Creek); Honey Lake Valley, banks of Long Creek Comment
  CHSC99731  Porterella carnosula Lowell Ahart; John Dittes 2008-6-20 14963 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 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS23859  Porterella carnosula Peter H. Raven with Otto T. Solbrig 1958-6-17 13294 Lassen along United States Highway 395, 4.8 mi s Madeline Comment
  JEPS96122  Porterella carnosula Vernon H. Oswald and Lowell Ahart 1996-6-24 7854 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), w side Papoose Meadows, ca 0.3 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  SEINET10460760  Porterella carnosula Eggleston 1927-7-11 EGGLESTON 21476 Lassen Bogard Ranger Station, Lassen Forest 1500 Comment
  SEINET10460819  Porterella carnosula G. Ledyard Stebbins 1949-8-6 Stebbins 4002 Lassen Edge of Feather Lake, between Susanville and McArthur. Mud flats 1676 Comment
  SEINET10460824  Porterella carnosula Peter H. Raven 1958-6-17 Raven 13294 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline Comment
  SEINET10460844  Porterella carnosula Baker 1894-7-21 Baker s.n. Lassen Near Eagle Lake. 1524 Comment
  SJSU3186  Porterella carnosula R. L. Fisher 1958-6-16 s.n. Lassen six miles south of Madeline, Madeline Plains, northeastern Lassen County 1615 Comment
  UC1099904  Potamogeton amplifolius Verne Grant, Irving Schneider 1947-8-24 8269 Lassen nw shore of Blue Lake (northern Lassen County) Comment
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  POM118853  Potamogeton foliosus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC267150  Potamogeton foliosus W. I. Follett; Seth Bertram Benson 1957-11-2 s.n. Lassen Tributary of Secret Creek, 1.1 miles N of Karlo Comment
  SEINET9336258  Potamogeton foliosus Unknown 2007-7-25 Lassen 6 mi S of Bieber in Big Valley. Robin Harbert's wild rice field. Weed. Common name: leafy pondweed. 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
  HSC17770  Potamogeton natans Fred J. Kindel 1955-7-14 Lassen Mt. Meadows Reservoir Comment
  SD6454  Potamogeton natans Mrs. R. M. Austin 1879-1 Lassen Lassen County Comment
  JEPS103226  Potamogeton nodosus G. Schoolcraft 1996-9-11 2563 Lassen Willow Creek below petroglyphs above dam 1341 Comment
  RSA772322  Potamogeton richardsonii Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  UC1536817  Potamogeton striatus Gordon H. True Jr. 1939-7-6 1006 Lassen Honey Lake Valley, Hartson Lake Comment
  CAS-BOT-BC143401  Potentilla John Thomas Howell 1976-7-20 52022 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC143402  Potentilla John Thomas Howell 1976-7-19 51960 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CHSC64894  Potentilla basaltica Vernon H. Oswald 1995-6-26 6933 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the w side of the road adjacent to a flat of low sagebrush. 1542 Comment
  JEPS88679  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen along Ash Creek at the crossing of Ash Valley Road (Lassen County Road 527, Forest Road 39N08) Modoc Plateau, along Ash Creek, Ash Valley (Ash Valley) 1554 Comment
  UC1598197  Potentilla basaltica G. L. Clifton 1988-7-20 18126 Lassen near Ash Valley; Likely Quad., near Ash Valley 1541 Comment
  CHSC5044  Potentilla glandulosa subsp. nevadensis L. B. Barlow 1967-7-4 87 Lassen 5 mi s of Eagle Lake Biological Station on Gallatin Beach Road. 1737 Comment
  CHSC4985  Potentilla gracilis var. fastigiata R. Clicquennoi 1967-6-24 12 Lassen NW corner of Eagle Lake on highway 139. 1524 Comment
  CAS-BOT-BC540359  Potentilla gracilis var. fastigiata Alice Eastwood 1912-8-22 1870 Lassen Lassen Butte Region: Morgans Springs Comment
  HSC18787  Potentilla gracilis var. fastigiata Jim Vaughn 1956-8-25 Lassen Drakesbad, Mt. Lassen National Park 1738 Comment
  CHSC7046  Potentilla millefolia E. L. Williams 1969-4-28 18 Lassen Meadow on Highway 32, 58 mi toward Chester. 259 Comment
  CAS-BOT-BC158514  Potentilla millefolia G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  CAS-BOT-BC158515  Potentilla millefolia Clarence R. Quick 1962-6-17 62 -17 Lassen North of DeLasmutt Ranch, along a dirt road to Black Mountain E.F. Hdqrts. 1615 Comment
  POM366603  Potentilla millefolia Christopher Davidson 1975-6-6 2721 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  SJSU5819  Poteridium annuum J. W. Tilden 1960-6-27 1503 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  JEPS126563  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. Comment
  CHSC12434  Prunella vulgaris Robert W. Severin 1969-6-25 13 Lassen At sw corner Murrer's Upper Meadow, 50' n mouth of Bly Tunnel; 2 mi ese E. L. B. S. 1584 Comment
  CAS-BOT-BC159776  Prunus andersonii Ella Dales Cantelow 1938-10-23 2192 Lassen N. of Doyle, Honey Lake in view Comment
  CHSC35955  Prunus andersonii M. S. Taylor 1982-5-7 4424 Lassen Reno Junction and along old road paralleling Hwy 70 just e of Beckwourth Pass. 1524 Comment
  HSC18803  Prunus andersonii Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  HSC63042  Prunus subcordata J. P. Smith, J. O. Sawyer 1971-5-23 4662 Lassen Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo Comment
  UC773874  Prunus virginiana var. demissa L. R. Short, Wm. Gansberg 1936-7-3 S 466 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1847 Comment
  UCD91489  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3016 Lassen 3 miles south of Horse Lake. Comment
  UC1143002  Pseudoroegneria spicata subsp. spicata August L. Hormay 1934-5-15 Lassen 15 mi n of Hall's Flat (Lassen Forest and Range Experiment Station, Lassen National Forest); Lassen Forest and Range Experiment Station, Lassen National 1524 Comment
  UC188856  Pseudoroegneria spicata subsp. spicata Milo S. Baker Lassen s side of Dixie Valley Dixie Valley Comment
  CAS-BOT-BC80093  Pseudotsuga menziesii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49409 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC361755  Psilocarphus brevissimus var. brevissimus James Jokerst 1983-7-25 1892 Lassen Near Madeline Plains 1614 Comment
  CHSC30610  Psilocarphus brevissimus var. brevissimus L. Maslin 1975-7-1 5 Lassen Lower Dry Lake. 1828 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
  UC35755  Psilocarphus brevissimus var. brevissimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3381 Lassen Honey Lake Valley Comment
  JEPS124657 Image available Psilocarphus brevissimus var. brevissimus Rechen 1964-7-1 79 Lassen 12 miles north of Susanville Hi 139. Comment
  JEPS124658 Image available Psilocarphus brevissimus var. brevissimus M. L. Wheelis 1964-7-1 132 Lassen Highway 139, 12 mi. north of Susanville. Comment
  POM40287  Psilocarphus elatior Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS102794  Psoralidium lanceolatum Vernon H. Oswald 2001-6-2 10040 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  HSC22982  Pterospora andromedea John Pratt 1970-7-10 70 Lassen 1524 Comment
  JEPS114875  Puccinellia lemmonii Lowell Ahart, John Dittes 2008-6-20 14967 Lassen Saline area, about 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SEINET4890229  Puccinellia lemmonii J. Davy 1897-1 s.n. Lassen Honey Lake Valley Comment
  UCD92258  Puccinellia simplex Leo Whitney 1935-3-2 3012 Lassen Rosamond Lake, Mohave Desert. Comment
Read comments Apr 29 2013
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  SJSU14478  Purshia tridentata W. D. Pitts 1970-5-29 301 Lassen by Hwy 395, 5 mi N of Doyle Comment
  UCR17285  Purshia tridentata Frank C. Vasek 1975-7-11 750711- 36 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 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
  CAS-BOT-BC147816  Purshia tridentata var. tridentata Doris Kildale Gillespie 1930-5-12 9321 Lassen 2 miles north of Susanville on road to Alturas Comment
  JEPS117495  Purshia tridentata var. tridentata Lowell Ahart, John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  POM90536  Purshia tridentata var. tridentata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC59803  Pyrola dentata Mary Meyer 1980-7-31 Lassen Forest adjacent to road. 1828 Comment
  RSA46867  Pyrola picta subsp. dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CAS-BOT-BC362266  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  UC1981730  Pyrrocoma carthamoides var. cusickii Debra Valov 2010-7-17 2010101 Lassen Bieber, Lassen Co. CA., off County Rd A2 c. 8.7 km east of Hwy 299; open area in sagebrush scrub. Comment
  UCD135332  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Hwy 395. Comment
  JEPS109778  Pyrrocoma lucida Dean W. Taylor 2002-8-10 18309 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  CAS-BOT-BC94255  Quercus garryana Alice Eastwood; John Thomas Howell 1940-6-11 7966 Lassen Eastern Fall River Valley Comment
  CHSC23897  Ranunculus aquatilis var. capillaceus George Ellmore 1973-7-7 7318 Lassen In bottom of Dixie Springs. 1581 Comment
  UC1101368  Ranunculus aquatilis var. capillaceus Herbert L. Mason and Verne Grant 1947-7-9 13290 Lassen 5 mi e Bieber (irrigation ditch) Comment
  JEPS121299  Ranunculus aquatilis var. diffusus Lowell Ahart, John Dittes 2013-7-23 18891 Lassen Margins of a 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
  CHSC13592  Ranunculus cymbalaria D. L. Stites 1967-6-24 36 Lassen Collected ca. 3 1/2 mi. se ELBS, Upper Murrer Meadow. 1524 Comment
  UC1537331  Ranunculus cymbalaria var. saximontanus Gordon H. True Jr. 1936-6-26 544 Lassen Honey Lake Valley-Willow Creek Valley Road 1524 Comment
  UC1025100  Ranunculus flammula Leo Whitney 1934-8-5 1800 Lassen 16 mi nw Westwood; Lassen National Forest, Caribou Lake 2194 Comment
  UC1136880  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spr. Exp. Range Lassen National Forest 1737 Comment
  UC1776661  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-3-1 2463 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  UC1126218  Ranunculus occidentalis K. E. Bradshaw 1939-5-27 242 Lassen Black Mountain Experimental Forest Lassen National Forest, Halls Flat Quadrangle (Plot 39-4) Comment
  CHSC64807  Ranunculus testiculatus Vernon H. Oswald 1995-5-24 6762 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of the Amedee Mtns. 1249 Comment
  CDA3487  Ranunculus testiculatus Lee Wheeler 1963-3-29 Lassen County fairgrounds, Susanville. 0 Comment
  CHSC52793  Ranunculus uncinatus Cindy Prouty 1978-7-5 1 Lassen E shore of Mahogany L., S of Eagle L. Found in meadow. 2060 Comment
  UC1364997  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen on service road #33NO1 two mi n Eagle Lake Resort (w side of lake); Eagle Lake Comment
  CAS-BOT-BC362887  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01 Comment
  CDA7609  Ratibida columnifera G. D. Barbe 1974-8-2 1939 Lassen At the north end of the Glenn-Eagle airstrip, southwest corner of Eagle Lake, 0.8 mile north of Eagle Lake Resort. 0 Comment
  SBBG2740  Ribes aureum H. and M. Dearing 1939-6-6 3563 Lassen Pitt River, Bieber Comment
  CAS-BOT-BC93393  Ribes cereum Carl B. Wolf 1929-9-1 3780 Lassen Mount Lassen National Park, between grassy and Snag Lakes. 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
  UC75460  Ribes inerme var. inerme Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CAS-BOT-BC212656  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile E of Fredonyer Pass Comment
  HSC20364  Ribes velutinum L. H. Myers 1963-4-6 37 Lassen 1.0 mi. S of Janesville 1280 Comment
  UC585163  Ribes velutinum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1738 Lassen gully on mountain above Red Rock 1420 Comment
  RSA0023962  Ribes velutinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC66378  Rigiopappus leptocladus Vernon H. Oswald; Lowell Ahart 1996-6-17 7795 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  JEPS29198  Rigiopappus leptocladus Lauramay T. Dempster 1961-6-17 1672 Lassen Gold Run Creek about 4 mi sw of junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  JEPS88202  Rigiopappus leptocladus Vernon H. Oswald and Lowell Ahart 1996-6-17 7795 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  OBI76971  Rorippa columbiae Anthony Baniaga 2011-7-24 464 Lassen Lassen NAtl forest. Windy Hollow. Pine Crk Valley quad T31N R8e sec 15 NE of SE 1720 Comment
  UCD107036  Rorippa curvisiliqua Tim Kuhn 2006-7-18 11 Lassen Eagle Lake Ranger District. Comment
  CHSC110910  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2012-7-9 18292 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
  CHSC25060  Rorippa nasturtium-aquaticum L. B. Barlow 1967-6-24 40 Lassen Meadow 4 mi. east of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 Comment
  CHSC4261  Rorippa nasturtium-aquaticum K. R. Stern 1967-6-24 2405 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  POM312442  Rorippa sinuata Verne Grant, Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  CHSC12477  Rosa woodsii subsp. ultramontana Carol Weld 1969-6-26 42 Lassen Springs near roadside, 7.8 miles S.W. of Eagle Lake Field Station. 1584 Comment
  CHSC7724  Rosa woodsii subsp. ultramontana Beverley J. Wise 1969-6-1 95 Lassen N.E. city limits of Susanville, Chestnut street at junction with Hwy 139. 1310 Comment
  CHSC99109  Rosa woodsii subsp. ultramontana Lowell Ahart; John Dittes 2008-6-20 14972 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS107934  Rosa woodsii subsp. ultramontana Lowell Ahart, John Dittes 2005-6-2 11944 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, about 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  POM90170  Rosa woodsii var. ultramontana Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CAS-BOT-BC148390  Rubus leucodermis John Thomas Howell 1974-7-9 50482 Lassen Coniferous forest between Susanville and SW end of Eagle Lake 1828 Comment
  CAS-BOT-BC148391  Rubus leucodermis John Thomas Howell; Gordon H. True 1973-8-1 50248 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1950 Comment
  CHSC7737  Rumex crispus Beverley J. Wise 1969-5-23 80 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CAS-BOT-BC433485  Rumex fueginus John Thomas Howell 1934-7-8 12485 Lassen Spalding's, Eagle Lake Comment
  SD64325  Rumex lacustris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on hwy #395 1676 Comment
  JEPS97683  Rumex salicifolius var. lacustris Annetta M. Carter 1946-8-18 1776 Lassen S end of Grasshopper Valley, N of Eagle Lake. 1615 Comment
  UC452568  Rumex salicifolius var. salicifolius Franklin P. Nutting Lassen n side Dixie Mts. Comment
  CHSC27591  Sagittaria cuneata J. D. Prouty 1978-7-23 24 Lassen Upper Murrers Meadow, SE of Eagle L. 1545 Comment
  CHSC4993  Sagittaria cuneata R. Clicquennoi 1967-7-1 21 Lassen At edge of small roadside pool 16 mi n of Susanville on highway 139. 1524 Comment
  CHSC5927  Sagittaria cuneata J. B. Kimsey 1946-6-17 Lassen Grasshopper Valley. 1624 Comment
  UC935793  Sagittaria cuneata Calvin McMillan and Malcolm A. Nobs 1949-6-15 785 Lassen Nubieber Comment
  CHSC117274  Sagittaria montevidensis subsp. calycina Lowell Ahart; Joh Dittes 2016-7-15 21222 Lassen About 50 yards west of the road and about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC108057  Salix exigua John Thomas Howell; Gordon H. True 1973-8-1 50150 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  CAS-BOT-BC104044  Salix hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen McArthur, at edge of Pit River 950 Comment
  CAS-BOT-BC128174  Salix lasiandra var. lasiandra Mrs. E. C. Sutliffe 1927-6-1 s.n. Lassen Drakesbad - Lassen Volcanic park Comment
  CAS-BOT-BC128175  Salix lasiandra var. lasiandra G. Schoolcraft 1999-5-7 2822 Lassen Susanville 1371 Comment
  CHSC60767  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1993-6-3 5489 Lassen Bridge Creek Spring Rd. (Lassen 112, Forest 31N06), at Bridge Creek, N of Hwy 44 between Poison Lake and Susanville. 1746 Comment
  POM362823  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 684 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  UC1776696  Salix lemmonii G. Schoolcraft 1994-8-3 2425 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  CHSC66404  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1996-6-17 7790 Lassen Modoc Plateau. Bizz johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of the Susan River at the Hwy. 36 bridge. 1402 Comment
  JEPS96090  Salix scouleriana Vernon H. Oswald and Lowell Ahart 1996-6-17 7770 Lassen on n side of Hwy 36 ca 0.2 mi e & mile post (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1432 Comment
  JEPS78095  Salsola tragus Gary W. Zamzow 1972-7-18 84 Lassen beside Highway 395, 3 mi n Hallelujah Junction; n of Hallelujah Junction 1371 Comment
  UC1037333  Salsola tragus Leo Whitney 1934-9-1 1957 Lassen Fredonyer Pass Lassen Nat'l Forest, Fredonyer Pass Comment
  UC1191402  Salsola tragus Verne Grant and Irving Schneider 1947-7-19 8080 Lassen s. of Alutras (in Pit Valley, Williams Ranch, along Southern Pacific right-of-way); Pit Valley, Williams Ranch Comment
Read comments Jun 24 2009
  CAS-BOT-BC214313  Salvia dorrii var. pilosa Ella Dales Cantelow 1941-5-22 3656 Lassen 2 1/2 mi. n. of Secret Valley C.C.C. Camp, Hy. 395, Quincy to Alturas Comment
  SEINET12319555  Sambucus caerulea Unknown 1978-1 27 Lassen SE end of Eagle L., base of basalt boulders from Black Mnt., T32N,R11E, sec.22 1609 Comment
  CHSC12487  Sambucus mexicana Carol Weld 1969-6-26 45 Lassen 7.8 miles SW of Eagle Lake Field Station. 1584 Comment
  RSA74137  Sanicula tuberosa M. S. Baker 1952-5-23 12426 Lassen Hwy 36 E of Chester Comment
  JEPS51512  Saponaria officinalis W. L. Jepson 1918-8-15 7994 Lassen Pass e South Fork Peak (not many mi from Madeline); Pass e of South Fork Peak 1706 Comment
  CDA23525  Sarcobatus vermiculatus M. R. Pryor 1953-9-22 Lassen 0.5 mile west of Jack Crow s property, Stacey. 0 Comment
  HSC4526  Sarcobatus vermiculatus Fred J. Kindel 1955-7-14 Lassen Wendel, Hot Springs 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
  UC1136501  Sarcobatus vermiculatus E. Sawyer 1935-6-27 216 Lassen Sierraville Quad., Long Valley Comment
  UC1121106  Sarcodes sanguinea A. Simontacchi 1940-6-17 883 Lassen 1.4 miles S of Patterson Mtn. 1821 Comment
  CAS-BOT-BC283085  Schedonorus arundinaceus John Thomas Howell; Gordon H. True 1973-8-1 50185 Lassen Gold Run Creek Road south of Susanville, Diamond Range, Sierra Nevada 1584 Comment
  CAS-BOT-BC111301  Schoenoplectus acutus var. occidentalis Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-20 1487 Lassen Long Creek, 1 mile south of Doyle Comment
  CAS-BOT-BC111302  Schoenoplectus acutus var. occidentalis R. F. Thorne; C. W. Tilforth 1969-9-6 39256 Lassen Sandy flats along Long Valley Creek c. 14 mi SE of Milford. Comment
  UC2134  Schoenoplectus acutus var. occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3312 Lassen Honey Lake Valley Honey Lake Valley (tules of sloughs and w end of lake) Comment
  RSA0009705  Schoenoplectus acutus var. occidentalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1100867  Scirpus americanus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1470 Lassen 1 mi s Milford (Honey Lake Valley); , s of Milford Comment
  UC1100818  Scirpus pungens Malcolm A. Nobs, S. Galen Smith 1949-8-20 1485 Lassen 1 mi n Doyle (marshy banks of Long Creek, Honey Lake Valley); Honey Lake Valley Comment
  UC2198  Scirpus pungens J. Burtt Davy Jun 17 1897-Jun 24 1897 3286 Lassen sloughs Susan River (Honey Lake Valley); , Honey Lake Valley Comment
  CAS-BOT-BC240003  Scribneria bolanderi Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 759 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  UC1561866  Scrophularia desertorum Barbara Ertter with Gary Schoolcraft 1987-6-16 7191 Lassen ne side Honey Lake (s side of Hot Springs VABM); Skeedaddle Mts 2286 Comment
  NY415691  Scutellaria holmgreniorum N. H. Holmgren 1980-7-5 9524 Lassen 21.9 km (13.6 mi.) from U.S. Hwy. 395 via Rye Patch Canyon, 24 km (15 mi) airline distance SE of Ravendale 1580 Comment
  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
  RSA201224  Scutellaria nana Clarence R. Quick 1964-8-1 64 -92 Lassen Cal Mt. east of Poison Lake. 1768 Comment
  SEINET13947832 Image available Scutellaria nana G. Schoolcraft 1986-1 1641 Lassen S of Observation Peak ca 1.5 mi E of Post Camp; 5500 ft alt., T33N, R16E, SEC10 1676 Comment
  CHSC64815  Secale cereale Vernon H. Oswald 1995-6-7 6831 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 9.0, 3.6 mi e of Wendel, ne of Susanville. 1231 Comment
  NY758141  Sedum lanceolatum J. T. Howell 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2286 Comment
  UC11232  Sedum stenopetalum M. S. Baker and Frank Nutting 1894-7-7 Lassen Harvey's Ranch Comment
  UC1137766  Senecio aronicoides August L. Hormay 1934-5-15 Lassen 1.50 mi e Halls Flat; Lassen National Forest 1767 Comment
  UC1143033  Senecio aronicoides L. R. Short 1936-6-2 S- 355 Lassen Burgess Spring Experimental Range Lassen National Forest 1865 Comment
  UC506921  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Lassen Forest 1783 Comment
  RSA516346  Senecio canus Barbara Ertter, Gary Schoolcraft 1987-6-16 7194 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  CAS-BOT-BC363686  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen About 4 miles east of Westwood 1432 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
  CAS-BOT-BC363752  Senecio integerrimus Clarence R. Quick 1961-6-21 61 -20 Lassen Adjacent to Road 21, Black Mountain Experimental Forest northeast of Lassen Peak 1798 Comment
  CHSC64759  Senecio integerrimus var. exaltatus Vernon H. Oswald 1995-6-7 6843 Lassen High Cascade Range. Hwy 36, 5.5 mi e of Westwood. Along the se edge of McKenzie Mdws., on the n side of the road. 1584 Comment
  JEPS85743  Senecio integerrimus var. exaltatus Roy E. Buck and Robert A. Price 1988-6-26 1031 Lassen ca 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  RSA0124942  Senecio integerrimus var. exaltatus Philip A. Munz 1947-5-18 11861 Lassen Fredonyer Forest Public Camp Ground, west of Susanville. 1509 Comment
  UC36171  Senecio triangularis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SEINET10788334  Setaria viridis Lowell Ahart 2010-8-31 Ahart 17139 Lassen T39N, R8E, southwest 1/4 section 35. About 1/4 of a plant, on damp good soil, moisture from irrigation, 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. Common. 1277 Comment
  CAS-BOT-BC213324  Sidalcea G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  UCD116670  Sidalcea glaucescens C. J. W. 1913-6-1 9 Lassen Grass Valley. Comment
  CAS-BOT-BC205776  Sidalcea oregana David D. Keck; J. Clausen 1935-6-24 3740 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC27642  Sidalcea oregana George Deniso 1978-7-21 88 Lassen Colman L., W shore, SE of Eagle L. 1962 Comment
  POM84765  Sidalcea oregana subsp. oregana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC619263  Sidalcea oregana subsp. oregana J. and H. W. Grinnell 1938-7-13 1099 Lassen near Ravensdale; near Ravensdale 1554 Comment
  RSA25322  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC99148  Sidalcea oregana subsp. spicata Lowell Ahart; John Dittes 2008-6-19 14890 Lassen East bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  POM253297  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 1 mile East of Westwood. 1524 Comment
  UC1137745  Sidalcea oregana subsp. spicata George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  POM84786  Sidalcea oregana subsp. spicata Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  UC1125817  Silene bernardina A. Simontacchi 1940-7-3 928 Lassen 2.3 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1844 Comment
  UC1483814  Silene bernardina G. Schoolcraft 1979-6-7 129 Lassen northern Skidaddle Mountains 2011 Comment
  UC585109  Silene bernardina E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1765 Lassen rocky ne slope of ridge near summit e Red Rock; summit e of Red Rock 1828 Comment
  CAS-BOT-BC383113  Silene douglasii Andrew Townesmith; Karen M. Meyer 2007-7-22 846 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
  CAS-BOT-BC389264  Silene lemmonii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CHSC65097  Silene menziesii Vernon H. Oswald; Lowell Ahart 1995-7-24 7137 Lassen High Cascade Range. Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. At the NE corner of the impoundment on Pine Creek. 1905 Comment
  CAS-BOT-BC389545  Silene nuda M. S. Taylor; B. Hammond 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass 1432 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
  CHSC89312  Silene nuda G. Douglas Barbe 1974-8-20 1936 Lassen Upper Long Valley. Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA666396  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UC1553400  Silene nuda G. Schoolcraft 1988-7-7 1818 Lassen ca 1 mi s Horne Ranch (se corners of Madeline Plains); , s of Horne Ranch 1645 Comment
  CAS-BOT-BC389544  Silene nuda Paul F. Covel 1937-7-19 755 Lassen Westwood Airport Comment
  CAS-BOT-BC389549  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  UC8482  Silene occidentalis subsp. occidentalis Milo S. Baker 1896-7-30 Lassen Silver Lake Comment
Read comments Sep 9 2015
  CHSC91206  Sisymbrium altissimum Lowell Ahart; John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  HSC27354  Sisymbrium altissimum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19283 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  RSA715618  Sisymbrium altissimum L. Ahart, John Dittes 2005-6-1 11850 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
  UC477505  Sisyrinchium bellum Geo. A. Fisher 1928-6-23 30 Lassen Halls Flat 1615 Comment
  CAS-BOT-BC365367  Solidago elongata L. S. Smith 1918-8-11 1022 Lassen Modoc National Forest. Camp One Comment
  CHSC59081  Solidago elongata Vernon H. Oswald; Lowell Ahart 1992-8-25 5177 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Edge of meadow. 1950 Comment
  UC1037338  Solidago spectabilis Leo Whitney 1934-7-3 1786 Lassen Harvey Valley Springs, ca. 14 miles west of Eagle Lake, Lassen National Forest 1737 Comment
  CAS-BOT-BC364907  Solidago velutina subsp. californica Louella Bass 1973-9-4 EV 134 Lassen Elysian Valley 1325 Comment
  SEINET7707308  Sorbus californica G. Schoolcraft 1997-1 2672 Lassen Diamond Mountain, N slope 2317 Comment
  CHSC96734  Sparganium emersum subsp. emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS97328  Sparganium emersum var. emersum Vernon H. Oswald 1995-8-21 7212 Lassen 38N 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. Small colony growing in shallow water of a large, marshy area at the SW corner of the lake. 1859 Comment
  CHSC66869  Sparganium erectum subsp. stoloniferum Vernon H. Oswald; Lowell Ahart 1996-9-10 8273 Lassen Mountain Meadows Reservoir SW of Westwood. Along the northwest shore of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  CAS-BOT-BC213213  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Standish Comment
  CHSC25308  Sphaeralcea grossulariifolia Pauleen Broyles 1977-6-1 155 Lassen Skedaddle Ranch Road at South Fork Reservoir turn-off, ca. 8 km ne of Herlong. 1660 Comment
  JEPS63054  Stachys ajugoides var. rigida Brown and Wieslander ca. 1914 57 Lassen near Eagle Lake; Martin Sprs. Comment
  HSC31740  Stanleya elata Donald Spalinger 1974-5-16 66 Lassen E of Hurlong in the Doyle Winter Deer Range 1220 Comment
  UC1567417  Stanleya pinnata G. Schoolcraft 1989-5-31 1880 Lassen near intersection Skedaddle Ranch and Wendel Roads; nr intersection Skedaddle Ranch and Wendel Roads 1249 Comment
  CHSC75482  Stanleya viridiflora Vernon H. Oswald; Lowell Ahart 1999-6-9 9744 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  SEINET11924834  Stellaria longipes Unknown 1967-1 550 Lassen 25 yds W of dam in Murrer's Meadow Comment
  SEINET11933235  Stellaria longipes J. D. Prouty 1978-1 29 Lassen S of Eagle L., along Papoose Creek, ca 1 mi from Gallatin Rd., T31N, R11E, Sec. 17 1591 Comment
  CAS-BOT-BC391078  Stellaria longipes subsp. longipes Louella Bass 1973-5-29 87 Lassen Elysian Valley 1325 Comment
  SJSU8510  Stellaria longipes subsp. longipes J. W. Tilden 1960-6-27 1516 Lassen by Moonlight Rd c. 5 mi E of Westwood 1524 Comment
  CHSC4785  Stellaria longipes var. longipes R. Carter 1967-6-29 574 Lassen In Murrer's Meadow, 100 yds. SE of dam. Comment
  HSC69069  Stephanomeria exigua Gary Schoolcraft 1979-7-3 107 Lassen Along roadside 3 mi. up from Horne Ranch 1641 Comment
  CAS-BOT-BC375307  Stephanomeria exigua subsp. coronaria John Thomas Howell 1934-6-10 11847 Lassen 4 miles south of Omira Comment
  RSA252459  Stephanomeria exigua subsp. coronaria R. F. Thorne, C. W. Tilforth 1969-9-6 39261 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  CAS-BOT-BC375448  Stephanomeria exigua subsp. exigua Margaret Williams; Steven Williams 1974-7-26 74 - L - 20 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC375594  Stephanomeria lactucina Clare B. Hardham 1971-8-22 18431 Lassen Diamond Mountain 2346 Comment
  CAS-BOT-BC375595  Stephanomeria lactucina Margaret Williams; Steven Williams 1974-7-26 74 -L-12 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  HSC83372  Stephanomeria lactucina R. W. Becking 1987-7-29 Lassen Lassen National Forest, Caribou Wilderness, Gem Lake Comment
  CHSC71870  Stephanomeria paniculata Vernon H. Oswald; Lowell Ahart 1998-9-8 9588 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  JEPS94085  Stephanomeria paniculata Vernon H. Oswald and Lowell Ahart 1998-9-8 9588 Lassen Kramer Rd. 3.1 mi. s. Lookout 1280 Comment
  JEPS28674  Stephanomeria tenuifolia George W. Gillett 1957-7-26 901 Lassen Butte Lake, point of rocks w of outlet an above trail Lassen Volcanic National Park 1844 Comment
  HSC24234  Stipa comata John Pratt 1970-6-27 49 Lassen .5 mi. E of Turtle Head Comment
  UCR244171  Stipa comata Jim Andre, G. L. Clifton 1993-6-3 19701 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  JEPS122358  Stipa lemmonii var. lemmonii Joseph Broberg, Jaycee Leonard 2012-6-28 CA 320 -104 Lassen From Alturas, head west on 299. 2 miles after Nubieber turn left at American flag and signs for Sierra Pacific Industries. Muck Valley Allotment. Collection site is at end of spur road Comment
  SEINET8080232  Stipa occidentalis var. californica M. J. Williams 1974-7-26 74 -L-37 Lassen 2 miles W of Hallelujah Junction, S of Hwy. 70. 1494 Comment
  SEINET10523055  Stipa thurberiana Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2873 Lassen Hallelujah Jct. intersection of US Hwy 395 & Calif. Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  SEINET8501999  Streptopus amplexifolius C. G. Gulling 1905-1 1545 Lassen Big Meadows. Comment
  CHSC76098  Suaeda occidentalis Lowell Ahart; Vernon H. Oswald 1999-9-13 8211 A Lassen In a field, about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  JEPS95901  Suaeda occidentalis Lowell Ahart 1999-9-13 8211 A Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  CHSC64843  Swertia albicaulis var. albicaulis Vernon H. Oswald 1995-6-26 6920 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  SBBG58593  Swertia albicaulis var. nitida S. W. Hutchinson -Jun-1925 369 Lassen Eagle Lake 1554 Comment
  UC28680  Symphoricarpos mollis Mrs. R. M. Austin and Bruce Jun 1898 2337 Lassen high mountains Comment
  UC773939  Symphoricarpos rotundifolius var. rotundifolius L. R. Short and Wm. Gansberg 1936-7-3 S- 468 Lassen Burgess Spring Experimental Range; Lassen National Forest 1847 Comment
  POM67970  Symphoricarpos vaccinioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UCR18738  Symphoricarpos vaccinioides Frank C. Vasek 1975-7-11 750711- 26 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  JEPS103196  Symphyotrichum bracteolatum G. Schoolcraft 1996-9-9 2585 Lassen Lower end of Willow Creek below petroglyphs 1310 Comment
  CHSC5199  Symphyotrichum campestre 1944-7-5 Lassen Eagle Lake. Harvey Valley. 1695 Comment
  CAS-BOT-BC97606  Symphyotrichum campestre Margaret Williams 1974-7-27 74 -L-67 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UCD136493  Symphyotrichum campestre Verne Grant; Irving Schneider 1947-7-31 8210 Lassen northeast quarter of George Williams section 19, Madeline Plain. Comment
  UC2027325  Symphyotrichum foliaceum var. parryi Anthony Baniaga 2011-9-8 512 Lassen Lassen National Forest. Caribou Wilderness; N of Long Lake. Red Cinder quadrangle. Comment
  CAS-BOT-BC98929  Symphyotrichum foliaceum var. parryi G. Schoolcraft 1994-7-6 2359 Lassen About 1 mile west of Boot Lake 204 Comment
  CAS-BOT-BC97916  Symphyotrichum frondosum Leo Whitney 1934-9-6 3070 Lassen South shore of Eagle Lake, Lassen National Forest 1584 Comment
  CHSC76082  Symphyotrichum frondosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8210 Lassen Just south of the parking area, about 1 mile south of the sign-in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  JEPS31869  Symphyotrichum frondosum R. F. Hoover 1940-10-1 4660 Lassen near, between Jonesville and Standish Honey Lake Comment
  JEPS40821  Symphyotrichum spathulatum Brown and Wieslander 1922-7-30 66 Lassen Martin Sprs, Eagle Lake Eagle Lake Comment
  CHSC84880  Symphyotrichum spathulatum var. yosemitanum Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 356 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  CAS-BOT-BC376900  Taraxacum officinale A. M. Vollmer; L. Beane 1953-7-1 62 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC376901  Taraxacum officinale Louella Bass 1973-4-13 16 Lassen Elysian Valley 1325 Comment
  CHSC68753  Taraxia subacaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8521 Lassen Small impoundment on Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi northeast of Hwy. 139. 1731 Comment
  CHSC12486  Taraxia tanacetifolia Carol Weld 1969-6-19 5 Lassen Ca 3/4 mile N. of Eagle Lake Field Station. Comment
  CHSC59758  Taraxia tanacetifolia Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In meadows by creek in Balls Canyon. 1219 Comment