Search Results — 2000 specimen records retrieved (1604 records with coordinates)
(That's the default maximum. Contact Jason Alexander for larger data requests.)

Results for search: County=LASSEN; Source=All;   

Mapping Options:

BerkeleyMapper with county and bioregion layers
BerkeleyMapper without layers.
KML export
(Note: only records with coordinates are mappable)

Download Options:
Select all records · Select records with coordinates

Include annotations and voucher information

PLEASE NOTE: Due to changes in newer versions of Excel, directly copying text from the above selected results does not produce a usable table.
    Follow these steps:
      1. The contents of the selected results window must be copied into a text editor like TextEdit for Mac or WordPad for Windows
      2. The selected results must be saved as a new text document.
      3. This new text document can now be copied into Excel or imported as a tab delimited text file.

(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/).
 Records are made available under the CCH Data Use Terms.

Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page.
Turn on yellow flags to show possible range discrepancies. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC23488  Abies concolor Wayne O. Baum 1971-7-16 71 -73 Lassen E. slope of Gallatin Peak. 2072 Comment
  UCD133116  Abies concolor Beecher Crampton 1960-6-18 5711 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  SEINET10473515  Achillea lanulosa Mary Susan Taylor 1974-1 Taylor 286 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  UC506903  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-14 F 275 Lassen Patterson Flat; Lassen National Forest 1737 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-BC260401  Achnatherum hymenoides John Thomas Howell 1974-7-8 50464 Lassen Susanville 1295 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
  CHSC30582  Achnatherum hymenoides M. A. Dubin 1975-7-20 9 Lassen Eagle Lake Field Station 50 yards north of Kitchen. 1569 Comment
  CHSC52909  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near the east-side of saddle ca 0.8 mi NE of Meadowview Peak. 1981 Comment
  CHSC93660  Achnatherum hymenoides Lowell Ahart; John Dittes 2005-6-2 11996 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  CAS-BOT-BC210660  Achnatherum lemmonii John Thomas Howell 1973-7-10 49774 Lassen Fredonyer Pass 1737 Comment
  UC40031  Achnatherum lemmonii M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  UCD50546  Achnatherum lemmonii A. H. Shunk 1923-1 11 Lassen Bogard Ranger Sta., Lassen County, California. Comment
  CHSC64900  Achnatherum nevadense Vernon H. Oswald 1995-6-19 6879 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  UCD50843  Achnatherum nevadense B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  CAS-BOT-BC216802  Achnatherum occidentale John Thomas Howell 1934-7-6 12431 Lassen Hall's Flat Comment
  UCD54017  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-8-1 50069 Lassen Canadian Zone forest, east slope of Diamond Range south of Susanville, Lassen County. 2362 Comment
  CAS-BOT-BC216456  Achnatherum occidentale subsp. californicum Clare B. Hardham 1971-8-22 18413 Lassen Diamond Mountain 2346 Comment
  RSA129521  Achnatherum occidentale subsp. californicum L. R. Short, Wm Gansberg 1936-6-2 S- 366 Lassen MDM, Burgess Spr. Exp. Range 1859 Comment
  RSA129479  Achnatherum occidentale subsp. occidentale L. R. Short, J. Warren 1936-6-29 S- 462 Lassen Lassen [National?] Forest 1821 Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  UC717977  Achnatherum occidentale subsp. occidentale David D. Keck 1944-7-8 5451 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada, Susan River 1341 Comment
  SEINET235272 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  SEINET235293  Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  SEINET235298 Image available Achnatherum thurberianum R. B. Turner 1980-5-18 Lassen Hwy 139 1 miles N of Susanville. 1463 Comment
  UCD32677  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen Lassen County, 7 miles north of Madeline, along US highway 395, roadside. 1524 Comment
  UC769950  Achnatherum webberi R. F. Hoover 1940-9-29 4647 Lassen pass between Shaffer Mt. and Warren Peak Comment
  CHSC29909  Acmispon americanus var. americanus Robin L. Ondricek 1978-7-15 99 Lassen East side of Lower Dry Lake. 1645 Comment
  SEINET5327496  Acmispon americanus var. americanus G. Schoolcraft 1995-6-27 2501 Lassen Cherry Creek 1524 Comment
  CHSC68867  Actaea rubra Vernon Oswald; Lowell Ahart 1997-6-24 8612 Lassen South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  OBI76928  Adonis aestivalis Anthony Baniaga 2011-6-10 323 Lassen Lassen/Modoc. Along hwy 299 ca 0.25 mi E of County Rd 75 quad. 1332 Comment
  CAS-BOT-BC383114  Agastache parvifolia Andrew Townesmith; Karen M. Meyer 2007-7-22 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44 1971 Comment
  CDA40751  Agastache parvifolia T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20381 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  CHSC23487  Ageratina occidentalis Wayne O. Baum 1971-7-22 71 -59 Lassen E slope of Gallatin Peak. 2072 Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long Valley Comment
  UC468891  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3404 Lassen Chat Honey Lake Valley, Long Valley Comment
  SEINET10925084  Agoseris glauca Paul Gallian, David B. Dunn 1971-6-2 Gallian 510 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  RSA715616  Agoseris glauca var. glauca L. Ahart 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1609115  Agoseris glauca var. glauca Vernon H. Oswald and Lowell Ahart 1993-6-14 5530 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
  CDA9936  Agoseris glauca var. laciniata T. C. Fuller 1963-6-11 10664 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC7650  Agoseris glauca var. laciniata Beverley J. Wise 1969-4-29 9 Lassen 3.5 mi. from Susanville on the Round Valley road (turns off Hwy 139 approx. 1.4 mi. from Susanville). 1341 Comment
  CAS-BOT-BC22894  Agoseris heterophylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49168 Lassen Elysian Valley northwest of Janesville 1325 Comment
  JEPS29231  Agoseris heterophylla Lauramay T. Dempster 1961-6-17 1671 Lassen s, 4 mi sw of junction of Gold Run Creek and Richmond Road Susanville; Gold Run Creek Comment
  RSA416397  Agoseris heterophylla Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CAS-BOT-BC433230  Agoseris heterophylla K. L. Chambers; Peter G. Dorris 1963-5-11 s.n. Lassen Red Rock Road, just east of Hwy. 395 (and just w. of Nevada State Line), ca. 10 mi. n. of Hwy. 70 junction, and s. of Constantia. Comment
  SEINET6738695 Image available Agoseris heterophylla M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 80- 19 -1 Lassen Smoke Creek Rd., 0.1 mile E of Hwy 395 1372 Comment
  UC585117  Agoseris heterophylla var. heterophylla E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1774 Lassen dry sandy wash Red Rock 1280 Comment
  UC1776674 Image available Agoseris parviflora G. Schoolcraft 1994-7-7 2365 Lassen About 1 miles west of Boot Lake 219 Comment
  CAS-BOT-BC127581  Agropyron cristatum John Thomas Howell 1961-9-25 36970 Lassen Sierra Nevada. East side of Beckwourth Pass. 1554 Comment
  SEINET3915762  Agropyron cristatum LeDoux, Dunn 1973-5-24 859 Lassen Collected at jct. of Hwy. 70&395 at Arco Station.; 0 Comment
  CDA1684  Agropyron cristatum subsp. pectinatum G. D. Barbe 1974-8-2 1919 Lassen Hallelujah Junction, US 395 at Hwy 70, northwest corner. Comment
  SEINET13680160  Agropyron desertorum P. Gallian, David B. Dunn 1971-6-2 484 Lassen 5 mi. S of Milford near Honey Lake on U.S. Hwy. 395.; 0 1250 Comment
  HSC8791  Agrostis exarata D. E. Anderson 1963-8-25 2803 Lassen 3 mi. E of Cromberg 1372 Comment
Read comments
Apr 25 2013
  HSC95151  Agrostis exarata Gordon Leppig 1998-7-12 955 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SACT000106  Agrostis exarata Malcolm Nobs, S. Smith 1949-7-21 Lassen shallow marshy stream from springs, 4 miles north of madeline Comment
  CAS-BOT-BC139676  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49483 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UCD51747  Agrostis gigantea John Thomas Howell 1975-7-23 51401 Lassen Sierra Nevada. Susanville. 1295 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
  CHSC58860  Agrostis pallens Vernon H. Oswald; Lowell Ahart 1992-7-16 5107 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
  UCD53272  Agrostis scabra L. Whitney 1933-8-4 2228 Lassen Sheepshead, 10 miles northwest of north end of Eagle Lake, Lassen National Forest. 1889 Comment
  CHSC115828  Agrostis stolonifera Lowell Ahart; John Dittes 2015-7-14 20335 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  SEINET4342189  Agrostis stolonifera B. L. Wilson, D. Lytjen 2005-7-25 11489 Lassen Deep Creek, near confluence with a smaller stream 1359 Comment
  RSA95637  Aliciella Verne Grant 1955-6-8 20861 Lassen 1.8 miles south of Karlo Jct on hwy 395, between Litchfield and Ravendale 1280 Comment
  UCD149882  Aliciella leptomeria Harry George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  SEINET12558767 Image available Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  UC978580  Alisma gramineum Verne Grant and Irving Schneider 1947-8-1 8221 Lassen irrigation ditch running sw into State Fish and Game nesting area on west side of Section 19; Madeline Plain Comment
  UC985665  Alisma gramineum Malcolm A. Nobs and S. Galen Smith 1949-7-22 1074 Lassen marshes along Willow Creek (10 mi n of Susanville); Willow Creek Valley Comment
  JEPS88427  Alisma plantago-aquatica Vernon H. Oswald and Lowell Ahart 1996-8-1 8106 Lassen sw Westwood (shore of reservoir ne of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  RSA119134  Alisma plantago-aquatica Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC55670  Alisma plantago-aquatica J. Burtt Davy Jun 17 1897-Jun 24 1897 3337 Lassen Susan River Honey Lake Valley 1219 Comment
  UC1536805  Alisma plantago-aquatica Gordon H. True Jr. 1939-7-6 1016 Lassen George Bailey Ranch Honey Lake Valley Comment
  CAS-BOT-BC131926  Allium Mike Vasey 1990-6-30 9060 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road, Modoc National Forest 1500 Comment
  UC725432  Allium acuminatum A. A. Heller 1938-6-23 15196 Lassen e Fredonyer Pass (e of Westwood on State Highway #36) 1645 Comment
  CAS-BOT-BC459571  Allium acuminatum H. C. Cantelow 1940-5-31 s.n. Lassen 4 miles east of Mc Arthur, Highway 299 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
  POM110069  Allium lemmonii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CAS-BOT-BC470922  Allium lemmonii G. Schoolcraft 1993-6-10 2287 Lassen Approx. 9.5 miles east of Madaline on Clark Valley Road 1828 Comment
  SEINET3885788  Allium lemmonii D. W. McNeal 1978-5-30 2129 Lassen Beside Highway #395, 1.9 mi. South of Ravendale.; 0 Comment
  HSC63955  Allium platycaule Teresa Prendusi 1980-5-30 1123 Lassen Mapes Spring, 11 mi. W of 395 and 19 mi. S Ravendale, near spring outflow 1585 Comment
  CHSC117192  Allophyllum divaricatum Lowell Ahart; John Dittes 2016-6-7 21011 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CHSC65366  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1995-8-14 7194 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittant stream, N of Susanville. 1676 Comment
  CHSC66280  Alopecurus aequalis Vernon H. Oswald; Lowell Ahart 1996-6-24 7873 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
  JEPS87183  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  UC576312  Alopecurus aequalis H. S. Yates 1936-8-12 6082 Lassen McKenzie Meadow Susanville Quad., McKenzie Meadow 1524 Comment
  UCD55871  Alopecurus aequalis Beecher Crampton 1964-6-27 7097 Lassen ca. 8 miles southeast Ravendale B.L.M. Spanish Springs- Shinn Mountains Resource Conservation area. 1981 Comment
  SEINET10510844  Alopecurus aequalis Alan A. Beetle 1941-6-28 Beetle 2795 Lassen 10 miles west of Chester, rte 36, open meadow near small stream. Assoc. Scirpus congdoni, Deschampsia, Ranunculus. Comment
  CAS-BOT-BC138161  Alopecurus aequalis var. aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 miles west of Chester, Route 36. Comment
  JEPS120874  Alopecurus carolinianus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18731 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
  CHSC108017  Alopecurus geniculatus Lowell Ahart; John Dittes 2011-6-20 17504 Lassen In the small stream, about 80 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
  JEPS114770  Alopecurus geniculatus Lowell Ahart, John Dittes 2008-6-20 14960 Lassen About 300 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  OBI77305  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  UC1130817  Alopecurus geniculatus A. Simontacchi 1940-5-17 745 Lassen 5.9 mi. s. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UC1130818  Alopecurus geniculatus A. Simontacchi 1940-6-15 876 Lassen 6.4 mi. w.-n.w. Cone Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley Comment
  CAS-BOT-BC137990  Alopecurus pratensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49219 Lassen Sierra Nevada. Elysian Valley northwest of Janseville. 1325 Comment
  UC1924262  Alyssum minus subsp. micranthum Debra Valov 2004-5-31 2004226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC99984  Ambrosia acanthicarpa L. P. Janeway 2008-8-2 9524 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  SEINET3871758  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 E of Sierra Valley.; 0 1584 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
  CAS-BOT-BC142540  Amelanchier utahensis Gary Schoolcraft 1984-6-5 1203 Lassen Upper Spencer Basin, 29-16-24 1889 Comment
  JEPS28676  Amelanchier utahensis George W. Gillett 1957-7-26 903 Lassen Butte Lake Lassen Volcanic National Park (point of rocks w of outlet and above trail) 1844 Comment
  CAS-BOT-BC28271  Amphiscirpus nevadensis William Anderson 1963-6-25 s.n. Lassen Dakin unit, Honey Lake Refuge. Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS114629  Amsinckia menziesii var. menziesii Lowell Ahart, John Dittes 2008-6-22 15042 Lassen On the east side of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  UCD159579  Anaphalis margaritacea D. S. Park 2011-8-24 316 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  JEPS28683  Angelica breweri George W. Gillett 1957-7-26 910 Lassen Lassen Volcanic National Park, e shore of Butte Lake Butte Lake; Lassen Volcanic National Park, Butte Lake 1859 Comment
  UC1562726  Angelica breweri Barbara Ertter 1988-7-25 7869 Lassen 1.5 mi e of Diamond Peak (10 air mi due s of Susanville, Diamond Mountains); Diamond Mountains 2255 Comment
  POM39125  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET3145644  Antennaria argentea M. E. Jones 1897-6-25 sn Lassen Susanville 1341 Comment
  CAS-BOT-BC26644  Antennaria argentea subsp. aberrans Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC5193  Antennaria dimorpha 1945-6-1 Lassen Eagle Lake. 1584 Comment
  CHSC54170  Antennaria dimorpha Vernon H. Oswald 1991-5-28 4624 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  UC1137751  Antennaria dimorpha L. R. Short 1936-6-8 S- 386 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1743 Comment
  UC1951075  Antennaria dimorpha Debra Valov 2009-4-25 2009016 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  POM39124  Antennaria geyeri Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SJSU7638  Antennaria geyeri J. W. Tilden 1960-6-27 1510 Lassen foot of Moonlight Road in outskirts Westwood 1524 Comment
  CAS-BOT-BC58692  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen East of Westwood Comment
  RSA715539  Antennaria luzuloides L. Ahart 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 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1951067  Antennaria luzuloides subsp. aberrans Debra Valov 2009-4-25 2009048 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CAS-BOT-BC26645  Antennaria pyramidata Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 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
  JEPS94555  Antennaria rosea subsp. confinis Vernon Oswald and Lowell Ahart 1997-6-24 8647 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  JEPS95747  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  UCD159578  Anthemis cotula D. S. Park 2011-8-24 315 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  CHSC112470  Apera interrupta Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18733 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
  JEPS127243  Apera interrupta Lowell Ahart, John Dittes 2016-7-13 21143 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
  CHSC6221  Apocynum androsaemifolium W. Vinyard 1946-6-17 Lassen Eagle Lake, summit of Mt. Fredonyer. 2349 Comment
  UC1123490  Apocynum androsaemifolium A. Simontacchi 1940-8-5 930 Lassen 4.2 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  HSC25977  Arabis holboellii var. retrofracta D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19270 Lassen Harvey Valley near Cone Springs Comment
  SEINET3899870  Arabis holboellii var. retrofracta Reed C. Rollins, Kathryn W. Rollins 1981-5-31 81177 Lassen Just north of Eagle Lake.; 0 Comment
  NY119620  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake Comment
  NY119631  Arabis suffrutescens G. Schoolcraft 1983-6-29 1038 Lassen Coulthurst Flat area, 34-10-27 SW 1889.8 Comment
  CAS-BOT-BC409989  Arceuthobium campylopodum John Thomas Howell 1973-7-10 49787 Lassen Fredonyer Pass 1737 Comment
  RSA152667  Arctostaphylos manzanita subsp. manzanita I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16317 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  CAS-BOT-BC45900  Arctostaphylos nevadensis A. H. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45901  Arctostaphylos nevadensis A. W. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45908  Arctostaphylos nevadensis M. S. Baker; Frank Nutting 1894-1-1 s.n Lassen Lassen Country Comment
  UC1137730  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  SEINET7263418  Arctostaphylos patula E. Murin 1967-5-20 s.n. Lassen Eagle Lake road at Galleton turnoff west of Susanville Comment
  UC1125789  Arenaria congesta var. congesta A. Simontacchi 1940-6-12 847 Lassen 3.5 mi sse Blaks Mtn.; Lassen National Forest,Halls Flat Quadrangle Comment
  POM101442  Arenaria congesta var. simulans Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1249269  Arenaria congesta var. subcongesta Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8463 Lassen 50 m se Susanville Comment
  CHSC68857  Arenaria kingii var. glabrescens Vernon Oswald; Lowell Ahart 1997-6-24 8633 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  HSC16736  Argemone munita subsp. rotundata M. T. Milligan 1964-7-17 147 Lassen 2 mi. N on main road from Eagle Lake General Store 1677 Comment
  JEPS124519 Image available Argemone platyceras var. hispida P. C. Billigs 1965-7-12 77 Lassen 1.8 mi south of MIlford on Hwy 395 Comment
  UC72736  Argemone rotundata Milo S. Baker Lassen Milford Comment
  JEPS88428  Arnica chamissonis Vernon H. Oswald and Lowell Ahart 1996-8-1 8109 Lassen sw Westwood (shore of reservoir ne of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  CHSC99739  Arnica chamissonis subsp. foliosa Lowell Ahart; John Dittes 2008-6-20 14902 Lassen In a wet meadow, about 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  RSA0115088  Arnica chamissonis subsp. foliosa Lowell A. Ahart, John Dittes 2008-6-20 14902 Lassen About 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC332742  Arnica chamissonis subsp. foliosa R. F. Thorne; Larry E. DeBuhr 1975-8-22 46993 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  UC2027326  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen National Forest. Willard Creek. Fredonyer Pass. Fredonyer Pass quadrangle Comment
  UC726334  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mi e, on State Highway #36 Fredonyer Pass 1737 Comment
  RSA455868  Arnica longifolia Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC66715  Arnica mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8123 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. 1737 Comment
  JEPS103219  Arnica sororia G. Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  CAS-BOT-BC85003  Artemisia arbuscula subsp. arbuscula Clare B. Hardham 1971-8-22 18370 Lassen Diamond Mountain 2346 Comment
  UC1137582  Artemisia arbuscula subsp. arbuscula A. Simontacchi 1940-9-16 947 Lassen 1.3 mi ne of Ebey Lake; Lassen National Forest, Halls Flat Quadrangle 1691 Comment
  CHSC118471  Artemisia arbuscula subsp. thermopola Don Leply 2016-7-31 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile northeast of railroad crossing on Highway 44. 40N31:46.7 x 121W01:35.9. 1743 Comment
  SD64324  Artemisia cana subsp. bolanderi Darley F. Howe 1966-8-25 4302 Lassen 41 miles south of Alturas on Hwy 395. 1675 Comment
  UC1242648  Artemisia cana subsp. bolanderi A. A. Beetle 1957-8-16 12910 Lassen Litchfield Comment
  UC1479613  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 195 Lassen Painter Flat 1719 Comment
  UC1507398  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 194 Lassen Painter Flat 1722 Comment
  JEPS28717  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen near Butte Lake Trail (above Snag Lake); Lassen Volcanic National Park 1859 Comment
Read comments
Aug 23 2012
  SEINET7153235 Image available Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains e. of Ravendale. 1628 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
  RSA719608  Artemisia nova A. Tiehm, Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of highway 1402 Comment
  SEINET245807  Artemisia nova Arnold Tiehm, Gary Schoolcraft 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
  SEINET263201  Artemisia nova J. Lyman 1994-4-23 4242 Lassen Along Highway 395, ca. 25 miles north of Susanville on intersecting BLM road 1433 Comment
  SEINET7153395 Image available Artemisia nova A. A. Beetle 1957-8-16 12580 Lassen 8 miles north of Litchfield Comment
  CHSC7634  Artemisia rothrockii Beverley J. Wise 1969-4-13 12 Lassen 2.9 mi east of the junction of Hwy 395 on Las. Co. Rd.338. 1463 Comment
  UCD55270  Artemisia spinescens Ellen Dean 2006-5-15 3080 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  CHSC60307  Artemisia tridentata Mary Ann Showers 1992-6-13 2534 Lassen Lassen Volcanic Naitonal Park. Trail from Snag Lake jct to Widow Lake. 1828 Comment
  CAS-BOT-BC99281  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  UCD137866  Asarum lemmonii Grady L. Webster 1989-5-13 7701 Lassen Butterfly Valley area. ca. 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  SEINET12319574  Asclepias fascicularis Unknown 1978-1 84 Lassen E shore of Eagle L., S of Little Troxel Pt., T32N, R11E, sec14 1573 Comment
  CDA5651  Asperugo procumbens Ancell May 1940 Lassen Susanville. 0 Comment
  CAS-BOT-BC99241  Aster G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  RSA516358  Aster campestris Barbara Ertter 1987-7-25 7311 a Lassen About 22 air miles NW of Susanville, Pine Creek Valley at jct. of Bridge Creek Springs Rd. 1738 Comment
  RSA503251  Aster integrifolius Bruce Bartholomew, B. Anderson 1988-7-22 4502 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  POM261535  Aster intermedius Alice Eastwood 1912-8-22 1895 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  POM45145  Astragalus accidens var. hendersonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  RSA0006691  Astragalus accidens var. hendersonii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 108749 Lassen South of Constantia. 1463 Comment
  CHSC117759  Astragalus agrestis Virginia Dains; Joanne Crawford 2016-7-13 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km northwest of Termo, 4.7 km west of Highway 395, 150 meters south of agricultural fields. 1617 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
  NY791375  Astragalus andersonii W. W. Eggleston 1911-5-29 6730 Lassen Vicinity of Doyle Station 1290 Comment
  NY791376  Astragalus andersonii W. W. Eggleston 1911-5-29 6734 Lassen Vicinity of Doyle Station 1290 Comment
  NY791374  Astragalus andersonii LeDoux 1973-5-24 861 Lassen Collected at jct. of Highways 70 and 395 at Arco Station. Comment
  HSC69614  Astragalus anxius Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  UC1483838  Astragalus anxius G. Schoolcraft 1980-8-14 307 Lassen w of Madeline; Ash Valley 1548 Comment
  SEINET8358141  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley ca 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  CAS-BOT-BC177444  Astragalus argophyllus var. argophyllus Arnold Tiehm; Gary Schoolcraft; Margaret Williams 1986-5-12 10347 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
  JEPS699  Astragalus canadensis var. brevidens Jos. Grinnell 1929-6-13 Lassen Spaldings Island , Spaldings Island (Eagle Lake) Comment
  NY797392  Astragalus canadensis var. brevidens R. R. Halse 1991-7-28 4247 Lassen Along State Highway 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville 1558 Comment
  CAS-BOT-BC177844  Astragalus curvicarpus var. curvicarpus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville Comment
  CHSC64875  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald 1995-6-26 6923 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 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
  SEINET11268146  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald, Lowell Ahart 1993-6-14 5519 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).; 0 1567 Comment
  CAS-BOT-BC182952  Astragalus filipes Lassen 1927 G. S. Crew 1927-7-15 74 Lassen Lassen National Forest 1725 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
  HSC100805  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 Lassen 100 yd. NE of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1521 Comment
  UC81426  Astragalus filipes Mrs. R. M. Austin June, 1879 43 Lassen near Eagle Lake; near Eagle Lake Comment
  CAS-BOT-BC182956  Astragalus filipes Alice Eastwood; John Thomas Howell 1940-6-16 8353 Lassen Constantia Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  SEINET10874132  Astragalus filipes Taylor 1982-7-8 Taylor 4790 A Lassen T23N R17E ne/nw sec 2. Constantia quad. At gate near RR Crossing just off Scott Rd, ca. 5 mi s of Constantia. Sagebrush Scrub. 4600 ft. 1402 Comment
  NY674273  Astragalus gibbsii G. Schoolcraft 1982-7-20 806 Lassen Wagner Canyon, east of McKesick Peak 1524 Comment
  RSA110069  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5692 Lassen South of Milford. 1433 Comment
  CAS-BOT-BC186912  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC186916  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC186942  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west of Amedee 1219 Comment
  CAS-BOT-BC229049  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC229050  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  NY675496  Astragalus lentiginosus var. chartaceus N. H. Holmgren 1980-7-5 9519 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale 1680 Comment
  RSA339986  Astragalus lentiginosus var. floribundus Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-5 9520 Lassen upper Smoke Creek drainage, 20.4km (12.7miles) from Hwy 395 via Rye Patch Canyon, 24km (15miles) airline distance SE of Ravendale 1585 Comment
  UC1537105  Astragalus lentiginosus var. floribundus Gordon H. True Jr. 1938-7-8 903 Lassen n Hot Spring Mountain (Mud Flat); n of Hot Spring Mountains, Mud Flat 1371 Comment
  CHSC71388  Astragalus lentiginosus var. salinus Vernon H. Oswald; B. Corbin, A. Sanger, G. Schoolcraft 1998-7-6 9247 Lassen East side of Eagle Lake on BLM land just east of the Lassen Youth Camp. 1584 Comment
  SBBG128879  Astragalus lentiginosus var. salinus L. Ahart 2011-6-20 17510 Lassen near edge of Ash Valley Rd, 3120 feet S of Ash Crk Cmpgrd, ca. 6.5 mi (air) SE of Adin 1511 Comment
  SEINET10486634  Astragalus malacus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2599 Lassen Hallalujah jct intersection of us hwy 395 & calif hwy 70; in open waste area Adjacent to artemisia tridentata community. 1433 Comment
  CAS-BOT-BC192841  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC192844  Astragalus pulsiferae A. A. Heller; P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  JEPS54791  Astragalus pulsiferae J. B. Davy June 1897 Lassen Chat Long Valley, Chat Comment
  UC1567373  Astragalus pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen e slope Shaffer Mtn. 1524 Comment
  SEINET4853424  Astragalus pulsiferae var. coronensis Stanley L. Welsh 2001-6-14 28158 Lassen E of Hwy 395, Rd to Rams Horn Spring campground. 1540 Comment
  CAS-BOT-BC192854  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen East side of Beckwourth Pass 1493 Comment
  UCD105194  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen East side of Bechwourth Pass, Sierra Nevada. 1493 Comment
  RSA0074200  Astragalus pulsiferae var. pulsiferae L. T. Stephenson 1897-09 6523 Lassen Chat Comment
  SEINET5324187  Astragalus pulsiferae var. pulsiferae P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Cal Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  CHSC23489  Astragalus purshii Waynes O. Baum 1971-7-16 71 -70 Lassen W. slope of Gallatin Peak. 1981 Comment
  NY678236  Astragalus purshii var. lectulus S. L. Welsh 2001-6-14 28157 Lassen East of Highway 395, road to Rams Horn Spring campground 1539 Comment
  RSA0007957  Astragalus purshii var. lectulus H. D. Ripley, R. C. Barneby 1944-5-30 5983 Lassen 2 miles N of Madeline. 1707 Comment
  CHSC99121  Astragalus purshii var. tinctus Lowell Ahart; John Dittes 2008-6-19 14888 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1128895  Astragalus purshii var. tinctus A. Simontacchi 1940-5-9 694 Lassen 4.5 mi sse of B.M. 7310 on Black Mtn; Halls Flat Quad., Lassen National Forest, Black Mtn Comment
  SEINET10490027  Astragalus purshii var. tinctus Paul Gallian, David B. Dunn 1971-6-2 Gallian 497 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc juniper artemisia. 1646 Comment
  UC100818  Astragalus whitneyi Milo S. Baker Lassen Dixey Mts. Comment
  UC82594  Astragalus whitneyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UCD105490  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 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
  CHSC5283  Astragalus whitneyi var. confusus J. Wolf 1946-6-17 Lassen Eagle Lake. Mt. Freedonyer. 2286 Comment
  SD109653  Astragalus whitneyi var. confusus James Vale, Keith Wagnon, Walter & Irja Knight 1981-5-24 4136 Lassen 3 mi S of Adin on Hwy #139 1372 Comment
  CAS-BOT-BC200874  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  RSA110171  Astragalus whitneyi var. siskiyouensis H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5747 Lassen Hidden Valley E of Susanville. 1585 Comment
  CAS-BOT-BC66017  Athyrium filix-femina var. cyclosorum B. C. Cain 1925-8-24 120 Lassen 1 mile below Drakesbad, Mt. Lassen Nat. Park Comment
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  UCSB61625  Atriplex confertifolia True, Jr., Gordon 1936-6-24 Lassen North shore of Honey Lake, Honey Lake Valley 1219 Comment
  NY652204  Atriplex truncata G. Schoolcraft 1998-7-21 2334 Lassen Near Phone Spring south of Rush Creek 1402.1 Comment
  POM35967  Balsamorhiza deltoidea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CDA10419  Balsamorhiza hirsuta T. C. Fuller 1963-6-11 10663 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CAS-BOT-BC106496  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-13 9363 Lassen Between Susanville and Janesville 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
  UC1794995  Balsamorhiza hookeri R. K. Brummitt 1998-5-17 19897 Lassen 12 km W of Susanville, E foot of Fredonyer Pass 1400 Comment
  UC964788  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi west of Fredonyer Pass, Highway 36 Comment
  CAS-BOT-BC106492  Balsamorhiza hookeri Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville State Hwy #36 Comment
  UC485131  Balsamorhiza sagittata Franklin P. Nutting Lassen Big Valley Mts. Comment
  CHSC99151  Barbarea orthoceras Lowell Ahart; John Dittes 2008-6-20 14949 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA783700  Bassia hyssopifolia R. R. Halse 2010-8-25 8088 Lassen Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake. 1559 Comment
  SEINET10479070  Bassia hyssopifolia Mary Susan Taylor 1974-7-8 Taylor 263 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  CHSC99275  Beckmannia syzigachne Lowell Ahart; John Dittes 2008-6-20 14946 Lassen In swales, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA129087  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 miles E.S.E. of Susanville 1280 Comment
  SD52270  Beckmannia syzigachne F. Stephens 1894-8-11 11766 Lassen Comment
  SJSU9993  Beckmannia syzigachne C. L. Kline 1965-7-13 195 Lassen 1.8 mi E of Nubieber on Highway 299 2493 Comment
  UC188777  Beckmannia syzigachne Milo S. Baker Lassen Dixey Valley Comment
  UC573777  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 mi ese Susanville; Susanville Quadrangle 1280 Comment
  CHSC96767  Berteroa incana D. McDonald 2005-7-18 1307852 Lassen Modoc Plateau. Lassen County. Hallelujah Junction. Comment
  CHSC29876  Berula erecta Robin L. Ondericek 1978-8-8 119 Lassen In water above the dam at Murrers Upper Meadow. 1548 Comment
  CAS-BOT-BC169399  Betula glandulosa M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CAS-BOT-BC413001  Bistorta bistortoides A. A. Heller 1938-6-4 15141 Lassen 2 miles east of Westwood 1402 Comment
  HSC23511  Bistorta bistortoides B. Anthony 1967-7-14 290 Lassen 5.3 mi. from jct. of Hwy. 44 and rd. to Silver Lake 1799 Comment
  CAS-BOT-BC128033  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen Gold Run Creek south of Susanville Comment
  CDA19752  Blepharipappus scaber D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC13477  Blepharipappus scaber J. Pitts 1967-6-23 266 Lassen 2 mi s of Eagle Lake Field Station, on the e side of the road. Comment
  CHSC92756  Blepharipappus scaber L. P. Janeway 2005-7-4 8462 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
Read comments
May 24 2013
  RSA164426  Blepharipappus scaber Clare B. Hardham 1962-6-16 7451 Lassen Gold Run Creek south of Susanville. Comment
  SEINET11261380  Blepharipappus scaber Robert L. Johnson, Mikel R. Stevens 2015-7-10 3922 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  UC1302428  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen s of Susanville (Gold Run Creek, Sierra Nevada Mountains); Sierra Nevada Mountains, Gold Run Creek Comment
  UC87371  Blepharipappus scaber T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CAS-BOT-BC128038  Blepharipappus scaber C. L. Hitchcock 1940-5-26 6612 Lassen lava beds ca. 12 miles north of Fall River Mills on Fall River 1371 Comment
  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
  JEPS53205  Boechera Leland S. Smith 1918-5-11 924 Lassen Hayden Hill Modoc Forest Comment
  RSA0125855  Boechera Christopher Davidson 1975-6-6 2723 Lassen 3.9 miles from jct of county roads 204 and 205 on road 204 along Gold Run Creek, SW of Susanville. 1395 Comment
  CAS-BOT-BC14089  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 miles SE of Nigger Cabin. 1737 Comment
  CHSC13946  Boechera pinetorum M. S. Taylor 1974-7-12 313 Lassen Above road bank by Clear Lake in Lassen National Forest. Comment
  CHSC99134  Boechera puberula Lowell Ahart; John Dittes 2008-6-19 14883 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
  JEPS118280  Boechera retrofracta Lowell Ahart, John Dittes 2011-6-20 17509 Lassen Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin 1511 Comment
  JEPS84940  Boechera retrofracta Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen n.e. side Honey Lake (e. of road over saddle on w. side of Skeedaddle Mountains); Skeedaddle Mountains 1645 Comment
  SEINET3165698  Boechera retrofracta R. W. Spellenberg 2006-6-19 13743 Lassen along a USFS access road 2 km E of Calif. Hwy 139, the junction of road and highway 31 km SE of Modoc Co. line (just S of Adin) 1715 Comment
  CHSC12965  Boechera sparsiflora K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5815 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CHSC29908  Boechera sparsiflora Robin Ondricek 1978-6-6 38 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  CAS-BOT-BC25677  Boechera sparsiflora H. D. Ripley; R. C. Barneby 1944-3-29 5948 Lassen South of Constantia. 1447 Comment
  CAS-BOT-BC25706  Boechera sparsiflora Reed Clark Rollins; Kathryn W. Rollins; Aileen Roads 1983-7-5 83226 Lassen Plumas National Forest. Above Laufman Ranger Station. 4.5 miles east of US Highway 395. Comment
  RSA0011460  Boisduvalia macrantha Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46980 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  HSC82193  Brodiaea coronaria subsp. coronaria Thomas W. Nelson, Jane P. Nelson 1980-7-6 6047 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  GMDRC7732  Bromus briziformis J. M. Andre, G. Clifton 1993-6-1 33409 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
  SEINET230396 Image available Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road 3.4 km east of US Hwy 395 14.5 km airline distance southest of Ravendale. 1700 Comment
  UCD57490  Bromus briziformis R. M. Love 1944-7-10 s.n. Lassen South of Ravendale. Comment
  CAS-BOT-BC149500  Bromus briziformis Clare B. Hardham 1961-6-17 7507 Lassen Susanville Aturas Road. Lava Flows. Route 395. 1432 Comment
  SEINET3921581  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 Comment
  SEINET4345029  Bromus briziformis J. A. Young 1982-6-7 s.n. Lassen N.E. Lassen Co. 1676 Comment
  UCR119112  Bromus carinatus Beecher Crampton 1954-7-5 2055 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  CAS-BOT-BC149580  Bromus carinatus var. carinatus William Bridge Cooke 1938-6-24 11062 Lassen Mount Shasta. MacBride Spring. 1524 Comment
  UCD59217  Bromus carinatus var. marginatus L. Whitney 1935-6-19 3262 a Lassen Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC118475  Bromus carinatus var. marginatus Don Lepley 2016-7-20 Lassen Eagle Lake Ranger District. Uphill side of Road 29N43.2 at outlet of Aspen Flat (tributary to Baxter Creek). 2026 Comment
  RSA127004  Bromus commutatus H. S. Yates 1936-8-11 6074 Lassen Bexter Creek [Baxter? creek]. Susanville. 1280 Comment
  UCD58468  Bromus commutatus Beecher Crampton 1954-7-5 2067 Lassen Along Hwy. 36. 5 miles west of Susanville. Comment
  UC1037137  Bromus diandrus Leo Whitney 1935-6-28 3371 Lassen Bieber Comment
  CAS-BOT-BC155323  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  UCD58854  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  CHSC99519  Bromus japonicus Lowell Ahart; John Dittes 2008-6-19 14875 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS103200  Bromus japonicus G. Schoolcraft 1995-6-6 2492 Lassen Antelope Spring N of Skedaddle Mountains 1524 Comment
  HSC22362  Bromus sterilis D. E. Anderson 1969-7-5 4998 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  CHSC106583  Bromus tectorum Zachary Garcia 2008-4-8 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC23519  Bromus tectorum Wayne O. Baum 1971-7-5 71 -15 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC91293  Bromus tectorum Lowell Ahart; John Dittes 2005-6-1 11909 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  HSC9348  Bromus tectorum C. S. Chavez 1965-5-1 60 Lassen 20 mi. N of Susanville on Hwy. 395. 1220 Comment
  RSA152589  Bromus tectorum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16341 Lassen 13.5 mi. E. of Susanville Comment
  UC1024960  Bromus tectorum Leo Whitney 1935-6-24 3301 Lassen 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UC1131326  Bromus tectorum A. Simontacchi 1940-6-8 835 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 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
  SEINET4564915  Bromus tectorum H. Durio 1979-5-23 4221 Lassen Meyers Ranch, Adin Comment
  CAS-BOT-BC185469  Calamagrostis canadensis Clare B. Hardham 1971-8-22 18406 Lassen Diamond Mountain. 2133 Comment
  UCD57782  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles W of Chester. 1524 Comment
  JEPS114632  Calandrinia ciliata Lowell Ahart, John Dittes 2008-6-22 15030 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  HSC36104  Callitriche fassettii Ken Mahouski 1973-4-29 Lassen Along Hat Creek at Hat #2 power house forebay, near Cassel. Comment
  CHSC66239  Callitriche verna Vernon H. Oswald; Lowell Ahart 1996-6-24 7870 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In or along Papoose Creek where it leaves the N end of the meadow. 1633 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
  NY18970  Calocedrus decurrens K. Morris 1973-5-25 226 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  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
  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
  UC119897  Calochortus macrocarpus T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CAS-BOT-BC273284  Calycadenia fremontii Barrett Anderson 1986-7-9 3125 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  CHSC34600  Calyptridium umbellatum Cindy Prouty 1978-7-10 17 Lassen Colman L. area, SE of Eagel L. 1962 Comment
  UCD39132  Calyptridium umbellatum Beecher Crampton 1964-6-25 7074 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  SD61074  Calystegia occidentalis subsp. occidentalis Darley F. Howe 1964-8-1 3915 Lassen Parsnip Creek, Modoc National Forest, Warner Mountains. 1830 Comment
  CHSC99737  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2008-6-20 14905 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  HSC15434  Camassia quamash subsp. breviflora H. E. Parks, S. T. Parks Jun 1928 220 Lassen Lassen National Park, Drakesbad 1768 Comment
  HSC15435  Camassia quamash subsp. breviflora Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  CHSC20416  Camassia quamash subsp. quamash K. R. Stern 1967-6-25 2431 Lassen On road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  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
  CHSC66238  Camelina microcarpa Vernon H. Oswald; Lowell Ahart 1996-6-24 7881 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the NE corner of the meadow (ca. 0.1 mi E of where Papoose Creek leaves the N end of the meadow). 1636 Comment
  OBI76938  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along hwy 395 ca. 6.6 mi S of Karlo Rd quad 1220 Comment
  SBBG70392  Camelina sativa subsp. sativa H. and M. Dearing 1939-6-6 3564 Lassen Bieber Comment
  POM38358  Camissonia andina Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  NY850970  Camissonia boothii subsp. alyssoides P. A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  POM253236  Camissonia boothii subsp. alyssoides A. A. Heller 1938-6-23 s.n. Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  SEINET3282784 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  JEPS89992  Camissonia contorta Dean Wm. Taylor with Robert A. Price 1988-6-4 9768 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. Watershed 1036 Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  RSA294815  Camissonia minor Arnold Tiehm 1980-5-29 5752 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  JEPS107466  Camissonia parvula Lowell Ahart, John Dittes 2005-6-1 11852 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CHSC93694  Camissonia pubens Lowell Ahart; John Dittes 2005-6-2 11993 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  HSC81475  Camissonia tanacetifolia Thomas W. Nelson, Jane P. Nelson 1980-7-6 6011 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 Comment
  NY852074  Camissonia tanacetifolia Mrs. C. C. Bruce 06 1898 2203 Lassen Susanville Comment
  HSC16514  Camissonia tanacetifolia K. P. St. John 1965-5-6 29 Lassen 6 mi. N of Litchfield on Hwy. 395 Comment
  NY852079  Camissonia tanacetifolia P. H. Raven 1963-5-29 18426 Lassen Along U. S. Highway 395 0.9 mile north of Ravendale Comment
  RSA144901  Camissonia tanacetifolia G. I. Stage, R. Thorp 1959-6-21 59 -117 Lassen 5.1 miles north of Termo Comment
  POM38369  Camissonia tanacetifolia subsp. quadriperforata F. H. Hillman 1897-7-12 s.n. Lassen Chat. Comment
  CAS-BOT-BC160858  Camissonia tanacetifolia subsp. tanacetifolia Mrs. C. C. Bruce 1898-6-1 2203 Lassen Susanville Comment
  CAS-BOT-BC160873  Camissonia tanacetifolia subsp. tanacetifolia John Thomas Howell 1934-6-10 11883 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC160878  Camissonia tanacetifolia subsp. tanacetifolia Lassen 1927 G. S. Crew 1927-6-25 38 Lassen Lassen National Forest. Norval Flat 1747 Comment
  CAS-BOT-BC37035  Capsella bursa-pastoris Louella Bass 1973-4-13 12 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UC197292  Cardamine breweri Franklin P. Nutting Lassen Pine Creek Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  RSA592547  Cardamine breweri var. breweri S. O. Mattoon 1978-7-10 24 Lassen Lassen County, Blue Lake Camp Ground: 17 miles E of Likely, Southern Warner Mtns, Modoc N Fork. 1890 Comment
  RSA702447  Carex abrupta L. P. Janeway 2004-6-26 8170 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  CHSC76790  Carex angustata L. P. Janeway 1999-9-5 6574 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  CAS-BOT-BC18104  Carex athrostachya John Thomas Howell 1973-7-10 49780 Lassen Sierra Nevada. Fredonyer Pass. 1737 Comment
  CAS-BOT-BC18107  Carex athrostachya James Stokes 1939-6-15 s.n. Lassen Bullard Lake west of Grasshopper Valley. Comment
  CHSC89754  Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  JEPS87494  Carex aurea Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC96431  Carex cusickii Gordon Leppig; J. Cromwell 1997-7-27 620 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CHSC53521  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Bench on east side of saddle ca 0.8 mi northeast of Meadoview Peak. 1981 Comment
  CHSC68770  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8502 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. 1546 Comment
  JEPS107438  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC803  Carex douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3289 Lassen Honey Lake Valley Comment
  CAS-BOT-BC19776  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Plumas National Forest. Milford Ranger District. East side of saddle, ca. 0.8 mile northeast of Meadowview Peak. 1981 Comment
  UCD140286  Carex douglasii James P. Smith; John Sawyer 1971-5-23 4664 Lassen along California 139, 1 mile south of junction with road to Thermo. Comment
  CAS-BOT-BC19979  Carex feta John Thomas Howell 1974-7-10 50557 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  SEINET7485202 Image available Carex filifolia Barbara L. Wilson, Danna Lytjen and Nick Otting 2005-1 11451 Lassen northeast part of Round Corral Reservoir, north of Buckhorn Road about a mile and a half west of Pyramid Lake 1876 Comment
  UC1609197  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  JEPS28342  Carex heteroneura George W. Gillett 1957-7-21 865 Lassen 300 yds. n trail summit (Juniper Lake - Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  SEINET7587564 Image available Carex heteroneura L. P. Janeway 2003-7-24 7915 A Lassen Swain Mountain 7.5' Quad, High Cascade Range, along Forest Service Road 30N14 1.1 km from Road 30N21. Small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  CHSC85978  Carex hoodii L. P. Janeway 2003-7-24 7917 Lassen High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  CHSC114410  Carex infirminervia Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. 6.5 or so air miles south of Susanville, in alder patch below the second aspen stand in an ephemeral drainage corridor upslope from the end of Road 29N07A. 1719 Comment
  HSC103653  Carex lenticularis var. limnophila Thomas W. Nelson, Jane Nelson 1985-8-10 8010 Lassen Along north side of Silver Lake 1829 Comment
  CHSC96450  Carex limosa Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95193  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 528 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS97331  Carex limosa Vernon H. Oswald 1995-8-26 7217 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC1609199  Carex livida Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen e Silver Lake (just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
Read comments
May 19 2014
  CAS-BOT-BC31610  Carex luzulina var. ablata Harold Bailey; Virginia Bailey 1948-8-25 2976 Lassen Summit Lake. 2040 Comment
  CAS-BOT-BC31947  Carex microptera John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50699 Lassen Steep rocky slope S and SE of Diamond Mt. 2286 Comment
  CHSC87113  Carex multicaulis L. P. Janeway 2001-6-20 7207 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
  HSC103643  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8019 Lassen Along north side of Silver Lake 1829 Comment
  RSA201569  Carex nebrascensis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  CAS-BOT-BC119714  Carex nervina Clare B. Hardham 1971-8-22 18405 Lassen Diamond Mountain. 2133 Comment
  SEINET13407108  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek 1768 Comment
  CHSC89760  Carex petasata L. P. Janeway 2004-6-26 8164 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CAS-BOT-BC118401  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen Dry drainageway of Rush Creek, N of Smoke Creek Ranch Road, 2 km W of the stateline, Comment
  CHSC91380  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11879 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
  JEPS107839  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11859 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
  UC1583985  Carex praegracilis G. Schoolcraft 1990-6-12 2087 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CAS-BOT-BC118739  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49471 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS109091  Carex preslii D. W. Taylor 2008-6-19 20226 Lassen Unnamed meadow equidistant between Papoose Meadwo and Mahogany Lake Comment
  CAS-BOT-BC118026  Carex rossii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49195 Lassen Elysian Valley NW of Janesville. 1325 Comment
  HSC48183  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19243 Lassen 2 mi. N of Westwood Comment
  HSC48218  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19222 Lassen 2 mi. N of Westwood Comment
  HSC48222  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19175 Lassen Harvey Valley near Cone Springs Comment
  UC2031874  Carex sheldonii Nick Otting and Danna Lytjen 2003-7-21 714 Lassen Modoc Plateau, Cedar Creek near Moon Lake, 6.25 air miles east-northeast of Madeline. Comment
  CAS-BOT-BC117702  Carex simulata Peter H. Raven; Otto Thomas Solbrig 1958-6-17 13278 Lassen Near a spring, along US HWY 395, 13.1 mi S of Ravendale. Comment
  HSC95305  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 514 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC116619  Carex subfusca George Wilson Gillett 1957-7-26 913 Lassen East Shore of Butte Lake, along water line. 1844 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
  SEINET4292262 Image available Carex subfusca Unknown 2003-1 7915 Lassen Swain Mountain 7.5'quad. High Cascade Range. Along Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.7 (air) km west of CloverValley. Comment
  UC1108036  Carex subfusca E. B. Copeland 1952-8-13 Lassen at road crossing King's Creek Meadow; Mount Lassen 2225 Comment
  CAS-BOT-BC116609  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  CAS-BOT-BC116610  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  CHSC96454  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  UCD123074  Castilleja Grady L. Webster 1989-5-13 7711 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  JEPS79146  Castilleja angustifolia L. R. Heckard with R. Bacigalupi 1980-6-11 5249 Lassen about 8 mi ne Litchfield (along U.S. Hwy 395) 1371 Comment
  JEPS81474  Castilleja angustifolia M. S. Taylor 1982-5-29 4568 Lassen ca 0.5 mi n dirt road paralleling Hwy. 395 jct. with Scott Rd. (ca 20 mi n of Reno) Comment
  UC585182  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1741 Lassen above Red Rock 1432 Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC249616  Castilleja applegatei subsp. pinetorum Doris Kildale Gillespie 1930-5-13 9367 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC249617  Castilleja applegatei subsp. pinetorum Alice Eastwood; John Thomas Howell 1940-6-15 8326 Lassen Grasshopper Valley Comment
  CHSC106084  Castilleja applegatei subsp. pinetorum Lowell Ahart; John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC36455  Castilleja applegatei subsp. pinetorum Susan H. Euing 1982-6-5 9 Lassen Ca. 3 1/2 mi s of jct of forest service roads 5.16 and 5.17. Comment
  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
  UC444860  Castilleja applegatei subsp. pinetorum Franklin P. Nutting Lassen s of Eagle Lake (mountains) Comment
  JEPS28820  Castilleja arachnoidea Frances Payne 1929-7-12 83 Lassen between Camp 1 and Lost Lake (s end of Warner Range, e slope); Warner Range 2286 Comment
  UC1563850  Castilleja arachnoidea Barbara Ertter 1988-7-25 7861 Lassen ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville, ridge of Diamond Mts); Diamond Mts. 2286 Comment
  JEPS23848  Castilleja campestris subsp. campestris Peter H. Raven and Otto T. Solbrig 1959-6-17 13295 Lassen 4.8 mi s Madeline (along U.S. Hwy 395) Comment
  UC1137570  Castilleja campestris subsp. campestris A. Simontacchi 1940-6-30 913 Lassen s shore Government Lake; Lassen National Park, Halls Flat Quad. 1524 Comment
  UC199374  Castilleja lacera Milo S. Baker Jul 1894 Lassen Dixie Valley Comment
  UC199376  Castilleja lacera Milo S. Baker 1900-1 Lassen Milford Comment
  JEPS86676  Castilleja lemmonii L. R. Heckard with T. I. Chuang 1990-7-14 6756 Lassen just e Westwood (n of Firland Rd (Hwy 36)) Comment
  CHSC4817  Castilleja linariifolia R. Carter 1967-7-16 617 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca 12 mi n of Susanville, on s side of rd. Comment
  CHSC6268  Castilleja linariifolia P. Balch 1955-7-21 Lassen Willow Creek, Eagle Lake. 1463 Comment
  HSC20530  Castilleja linariifolia M. T. Milligan 1964-8-6 208 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 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
  JEPS62836  Castilleja linariifolia John Weiler 1970-7-8 70240 Lassen n shore Eagle Lake Comment
  CAS-BOT-BC244885  Castilleja miniata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49417 Lassen Elysian Valley, west of Janesville. Plants of the Sierra Nevada 1325 Comment
  JEPS9846  Castilleja miniata W. L. Jepson 1918-8-2 7793 Lassen Honey Lake Valley 1219 Comment
  RSA18167  Castilleja miniata Carl B. Wolf 1929-9-1 3778 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  CDA18277  Castilleja minor var. minor G. D. Barbe 1974-8-2 1943 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC240998  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen Route 395, 5 miles south of Ravendale 1645 Comment
  CHSC27743  Castilleja pilosa N. E. Heiken 1978-7-28 68 Lassen E of Eagle L., base of basalt jumble, along Lower Dry L. 1645 Comment
  RSA0035914  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-20 14947 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1012185  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen 5 mi s Ravendale (Route 395) 1645 Comment
  UC1924580  Castilleja pilosa Debra Valov 2006-5-29 2006032 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1282 Comment
  CHSC66263  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1996-6-24 7841 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC66406  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1996-6-17 7802 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  CHSC99525  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-22 15027 Lassen Along a small natural drainage, about 20 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS114743  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
  JEPS74941  Castilleja tenuis T. I. and F. M. Chuang 1975-7-23 7554 Lassen about 2 mi w Westwood (along road to Mountains Meadow Reservoir) Comment
  JEPS88198  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1996-6-17 7802 Lassen 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy 36, n side of trail between Devils Corral Trailhead and the 6.0 mi post); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  RSA0059451  Castilleja tenuis Lowell Ahart, John Dittes 2011-6-20 17499 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1012485  Castilleja tenuis Francis W. Pennell 1940-6-7 25727 Lassen 8 mi e Nubieber (Route 299) 1310 Comment
  UC1483853  Castilleja tenuis G. Schoolcraft 1980-7-16 316 Lassen near Nelson Corral Reservoir 1804 Comment
  UC1609289  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1993-6-28 5576 Lassen 0.2 mi n Highway 44 (Harvey Valley Rd. (33N02), e side of Grays Valley, e of Poison Lake); Grays Valley 1749 Comment
  RSA0034899  Caulanthus inflatus Bob Thille 1964-3-14 Lassen 3 miles south of Atola, Highway 395. 883 Comment
  RSA0027351  Caulanthus major John F. Emmel 1994-7-17 1328 Lassen Summit area of Observation Peak. 2378 Comment
  NY608460  Caulanthus major var. nevadensis N. H. Holmgren 1978-6-11 8923 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  NY608461  Caulanthus major var. nevadensis G. Schoolcraft 1981-7-15 510 Lassen Near top of Fredonyer Peak along lookout road. 2377.4 Comment
  UC1477726  Caulanthus major var. nevadensis Gary Schoolcraft 1979-7-10 140 Lassen e of summit Observation Peak; e of summit Observation Peak 2392 Comment
  SEINET5341299  Caulanthus pilosus F. B. Headley 1915-5-28 s.n. Lassen Honey Lake. Comment
  SEINET196483  Ceanothus cordulatus C. B. Heisser 1947-7-13 s.n. Lassen Near Westwood Comment
  SEINET210873  Ceanothus cordulatus N. H. Holmgren, JJ Fay; BLBethers 1970-6-24 4373 Lassen 2 miles west of Westwood at edge of airstrip 1554 Comment
  CHSC7727  Ceanothus prostratus Beverly J. Wise 1969-4-21 90 Lassen Approx. 2 mi. past Susanville old dump on old dump road. 1341 Comment
  RSA122369  Ceanothus prostratus G. A. Fischer, Irwin H. Johnson 1933-2-14 263 Lassen Lassen Forest 1768 Comment
  UCSB70630  Ceanothus prostratus Sarr, Dan 1995-7-29 Lassen 2 mi S of Eagle Lake Pass, on Eagle Lake Road 1800 Comment
  CHSC23565  Ceanothus velutinus W. O. Baum 1971-6-28 46 Lassen E slope of Gallatin Peak. 1950 Comment
  CAS-BOT-BC184969  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  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
  RSA157745  Centaurea maculosa T. C. Fuller 1962-8-28 9472 Lassen Roadside west side of Hwy. 395, 1.7 miles south of Doyle Comment
  CAS-BOT-BC284470  Centaurea solstitialis Yeager 1929-8-29 s.n. Lassen Honey Lake District Comment
  NY444409  Centaurea solstitialis G. Schoolcraft 1982-8-17 866 Lassen Along Smoke Creek Road, just east of Hwy 395 Comment
  CDA7335  Centaurea squarrosa T. C. Fuller 1959-10-15 3125 Lassen East of Pitt River, road to Lookout, ca. 2 miles north of Bieber. 0 Comment
  RSA97606  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley Comment
  SEINET13331053 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1959-10-15 s.n. Lassen Roadside, E. of Pitt River on road to Lookout, about 2 mi. N. of Bieber Comment
  RSA516348  Centaurium exaltatum Barbara Ertter 1987-7-24 7305 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  CAS-BOT-BC388152  Cerastium fontanum Louella Bass 1973-6-3 90 Lassen Elysian Valley. West side of Ridge Meadow 1325 Comment
  CHSC29883  Cerastium fontanum subsp. vulgare Robin L. Ondricek 1978-7-15 101 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  RSA755002  Cerastium glomeratum L. Ahart, John Dittes 2008-6-20 14966 Lassen About 10-100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber. 1264 Comment
  UC8815  Ceratophyllum demersum J. Burtt Davy Jun 17 1897-Jun 24 1897 3324 Lassen Honey Lake Valley; near DeWitt's 1219 Comment
  UC956838  Ceratophyllum demersum Verne Grant and Irving Schneider 1947-9-6 8384 Lassen Creek midway between Eagle Lake and Susanville; creek midway between Eagle Lake and Susanville Comment
  CDA25720  Cercocarpus ledifolius T. C. Fuller 1963-7-15 10899 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  JEPS94488  Cercocarpus ledifolius var. intermontanus Vernon H. Oswald and Lowell Ahart 1997-5-27 8513 Lassen 1.4 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling the road); Forest Route 38N04 1645 Comment
  CHSC4884  Cercocarpus ledifolius var. ledifolius Bill Wilson 1967-7-19 208 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  SD8909  Chaenactis douglasii R. M. Austin Aug 1882 Lassen Comment
  CAS-BOT-BC276619  Chaenactis douglasii var. douglasii John Thomas Howell; Gordon H. True 1973-8-1 50208 Lassen Headwaters of Baxter Creek, E slope of Diamond Range S of Susanville 2164 Comment
  CHSC105256  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2010-7-31 16984 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
  CHSC111255  Chaenactis douglasii var. douglasii L. P. Janeway; B. Castro 2012-7-3 10938 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  CHSC13859  Chaenactis douglasii var. douglasii George Ellmore 1973-6-25 731 Lassen West Eagle Lake on Pelican Point. 1560 Comment
  CHSC23518  Chaenactis douglasii var. douglasii Wayne O. Baum 1971-7-6 71 -50 Lassen Slope of Gallatin Peak. 2011 Comment
  CHSC93690  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction. 1460 Comment
  JEPS19806  Chaenactis douglasii var. douglasii Rimo Bacigalupi with S. Galen Smith 1957-6-28 6012 Lassen ne of Karlo (along U.S. Highway 395, near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC276610  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-24 3737 Lassen 2 miles S of Ravendale 1464 Comment
  CHSC30603  Chamaebatiaria millefolium Mary Nesset 1975-7-16 10 Lassen E.L.B.S. water tank. 1554 Comment
  NY758642  Chamaebatiaria millefolium G. Schoolcraft 1981-7-29 554 Lassen On south slope of McDonald Peak 2134 Comment
  HSC63927  Chamaesaracha nana Teresa Prendusi 1980-5-30 1109 Lassen Mapes Spring, 11 mi. W of 395 and 19 mi. S Ravendale, near spring outflow 1585 Comment
  CHSC58840  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1992-7-16 5114 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. Beds of creek and reservoir. 1691 Comment
  CHSC65310  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1995-8-14 7178 Lassen Modoc Plateau. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  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
  JEPS121298  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-7-22 18847 Lassen W margin of duck field, about 30 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA756354  Chenopodium Barbara Ertter 1987-7-24 7301 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  CAS-BOT-BC473048  Chenopodium Gary Schoolcraft 1984-8-21 1362 Lassen S. slopes of Fredonyer Mtn 1950 Comment
  CHSC106830  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet. 1524 Comment
  CAS-BOT-BC426318  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  CAS-BOT-BC426358  Chenopodium incognitum Margaret Williams; Steven Williams 1974-7-26 s.n. Lassen Near Hallelujah Junction 1493 Comment
  SEINET4171909  Chenopodium leptophyllum M. J. Williams 1974-7-26 74 -L-36 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  CAS-BOT-BC39671  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CAS-BOT-BC247863  Chorizanthe watsonii Clare B. Hardham 1961-6-17 7499 Lassen Baxter Cr. south of Susanville 1524 Comment
  JEPS57772  Chorizanthe watsonii W. L. Jepson 1918-8-2 7766 Lassen Beckwith Pass 1463 Comment
  UC1135263  Chrysolepis sempervirens A. Simontacchi 1940-8-8 938 Lassen 4.2 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1889 Comment
  CHSC25128  Chrysothamnus Paul Lyman 1970-5-2 28 Lassen Bald Mountain; Janesville. On slope of Bald Mountain which lies 10 miles east of Susanville. Comment
  CDA46  Chrysothamnus albidus O. W. Newman Aug 1915 s.n. Lassen Susanville. Comment
  CAS-BOT-BC140659  Chrysothamnus humilis John Thomas Howell 1974-7-9 50485 Lassen SW of Wildcat Point, Eagle Lake 1554 Comment
  RSA3149  Chrysothamnus nauseosus subsp. consimilis C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles form Wendel on road to Jonesville 1220 Comment
  SJSU3013  Chrysothamnus viscidiflorus J. W. Tilden 1967-8-23 1772 Lassen Litchfield, southeastern Lassen County 1402 Comment
  UCD130269  Chrysothamnus viscidiflorus Beecher Crampton 1954-5-11 1883 Lassen Beckwourth Pass. 1588 Comment
  JEPS97320  Chrysothamnus viscidiflorus subsp. lanceolatus Vernon H. Oswald and L. Ahart 1995-8-14 7190 B Lassen T33N R14E SW1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville 1645 Comment
  CAS-BOT-BC100756  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 2872 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  CHSC65296  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald 1995-8-14 7183 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Roadside. 1645 Comment
  JEPS21415  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
  UC1602277  Chylismia claviformis subsp. cruciformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3399 Lassen Amedee Honey Lake Valley Comment
  RSA748313  Cichorium intybus K. M. Meyer, A. Townesmith 2007-7-19 133 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  POM352119  Cichorium intybus George Willet 1935-6-28 s.n. Lassen Susanville Comment
  RSA299121  Cinna latifolia J. T. Howell, Gordon H. True 1973-8-1 50346 Lassen Gold Run Creek road, south of Susanville, Diamond Range. 1951 Comment
  CAS-BOT-BC285336  Cirsium andersonii Annie M. Alexander; Louise Kellogg 1946-8-13 5156 Lassen West side of Eagle Lake Comment
  JEPS128416  Cirsium andersonii Catherine Bauer with Ellen Bauer Benson 2017-8-16 23 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CDA1127  Cirsium canescens G. D. Barbe 1982-7-12 3875 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 Comment
  CDA1129  Cirsium canescens T. C. Fuller 1966-7-22 14981 -B Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1166  Cirsium cymosum T. C. Fuller 1959-7-7 2762 Lassen Hwy 395; 1.7 mi. south of Ravendale. 0 Comment
  CDA1168  Cirsium cymosum G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2798 Lassen Secret Creek drainage, W side of Hwy 395 at foot of Saddle Rock. 15 mi. south of Ravendale. 0 Comment
  CDA1174  Cirsium cymosum G. D. Barbe 1982-7-13 3882 Lassen Madeline Plain Scattered along Westside Rd. at base of Dry Valley Ridge, 3 mi. n. of Termo- Grasshopper Rd. 0 Comment
  CDA1258  Cirsium inamoenum J. R. Keck Jr., D. L. Haws 1980-7-22 PDR# 330194 Lassen Ravendale, BLM rangeland. Comment
  CDA1262  Cirsium inamoenum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20380 Lassen West side of Smoke Creek Reservoir; drainage on east side of road above lake. Comment
  CDA1527  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC280439  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CAS-BOT-BC286302  Cirsium scariosum John Thomas Howell 1934-6-14 12153 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC286306  Cirsium scariosum John Thomas Howell 1976-7-20 52025 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC286307  Cirsium scariosum John Thomas Howell 1976-7-20 52025 Lassen Along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CDA21727  Cirsium undulatum Lee Wheeler 1965-9-21 Lassen Pitt River Ranch, first road going north west of Bailey Creek, first old vacant ranch on left side of road, 18 miles west of Termo. 0 Comment
  CAS-BOT-BC233917  Cistanthe umbellata G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley RNA 1554 Comment
  LA47494  Clarkia gracilis subsp. albicaulis Clare B. Hardham; 1961-6-16 7485 Lassen Gold Run Creek, S of Susanville Comment
  JEPS108559  Clarkia lassenensis L. P. Janeway 2005-7-3 8452 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout 1536 Comment
  UCD55291  Clarkia lassenensis Ellen Dean; Gary Schoolcraft 2006-5-16 3112 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1274 Comment
  UCR244103  Clarkia lassenensis Jim Andre, G. L. Clifton 1993-6-9 19699 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC164864  Clarkia rhomboidea A. M. Vollmer; L. Beane 1953-7-1 35 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  RSA122141  Clarkia stellata L. R. Short 1936-6-23 S- 448 Lassen Burgess Spring Exp. Range, Lassen forest 1799 Comment
  CHSC112426  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18742 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
  CHSC63414  Claytonia rubra subsp. depressa Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6311 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  CHSC64847  Claytonia rubra subsp. depressa Vernon H. Oswald 1995-6-26 6940 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  CHSC92649  Claytonia rubra subsp. rubra L. P. Janeway 2005-7-4 8464 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC7897  Claytonia rubra subsp. rubra M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC452681  Claytonia umbellata Milo S. Baker 1890-1 Lassen Milford 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
  CAS-BOT-BC423197  Cleomella parviflora Arnold Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel 1231 Comment
  NY242361  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen About 1 mile west of CA-NV stateline along Smoke Creek Road. 1341.1 Comment
  RSA294659  Cleomella plocasperma A. Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  CHSC36465  Collinsia parviflora Heffrey R. Peek 1982-6-3 26 Lassen Ca. .9 mi w of jct of forest service roads 5.16 and 5.17 over Black Mountain. Ca. 20 yds e of 5.16. Comment
  JEPS107462  Collinsia parviflora Lowell Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CDA34520  Collinsia parviflora B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  HSC63776  Collinsia parviflora Teresa Prendusi 1980-4-30 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  RSA152668  Collinsia parviflora I. L. Wiggins, Dorothy Wiggins 1961-6-10 16322 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  SEINET10548296  Collinsia parviflora Mary Susan Taylor 1974-5-4 Taylor 225 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
  SEINET10931315  Collinsia parviflora Katherine L. Morris 1973-5-25 Morris 240 Lassen Collected 7.6 mi nw of jct of hwy 36 & 44 on hwy 44 in an area of yellow pine And incense cedar; very moist area. Comment
  SBBG6889  Collinsia torreyi var. latifolia H. and M. Dearing 1938-6-30 2223 Lassen ca. 50 mi W of Susanville 1371 Comment
  CHSC4440  Collomia grandiflora K. R. Stern 1967-6-30 2450 Lassen West central side of Eagle Lake. 1554 Comment
  RSA122984  Collomia tinctoria L. R. Short, J. Warren 1936-6-10 s- 382 Lassen Burgess Spr. Exp. Range 1790 Comment
  RSA712891  Collomia tinctoria L. P. Janeway 2005-6-3 8450 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. Comment
  SEINET7127328  Convolvulus arvensis M. J. Williams 1974-7-29 74 -L-57 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  JEPS121058 Image available Convolvulus occidentalis subsp. occidentalis Lynne C. Carter 1967-7-12 92 Lassen 6 miles east of Lassen + Shasta County line on Hwy 299, at Lookout over Fall River Valley. Comment
  JEPS124900 Image available Convolvulus occidentalis subsp. occidentalis Ellen Locke 1967-7-12 101 Lassen Collected at overlook for Fall River Valley, Highway 299, about 6 miles east of Shasta-Lassen county line. Comment
  UC762620  Cordylanthus ramosus R. F. Hoover 1940-10-5 4678 Lassen Secret Valley Comment
  JEPS74320  Cordylanthus tenuis subsp. tenuis John Thomas Howell and Gordon H. True 1973-7-31 50019 Lassen on road from Janesville to Thompson Peak; Sierra Nevada, Diamond Range 1737 Comment
  CHSC66384  Cornus sericea subsp. sericea Vernon H. Oswald; Lowell Ahart 1996-6-17 7810 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marsh at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  UC1122744  Cornus sericea subsp. sericea C. W. Hanks 1934-9-26 92 Lassen w. side Long Valley (near Plumas Nat'l Forest); Sierraville Quad., Long Valley Comment
  SD43504  Cornus stolonifera Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground, above Milford. 1525 Comment
  CAS-BOT-BC290390  Crepis acuminata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49462 Lassen Elysian Valley, west of Janesville 1325 Comment
  RSA716340  Crepis acuminata L. Ahart, John Dittes 2005-6-2 11933 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  UC1136839  Crepis acuminata George A. Fischer and Irwin H. Johnson 1933-7-14 F- 266 Lassen Lassen <National> Forest 1752 Comment
  UC581223  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1936-6-7 1763 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  UC581294  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2346 Lassen about 4 mi se Willow Creek Range Station (se of Adin) 1767 Comment
  CHSC36849  Crepis bakeri M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno. Comment
  CAS-BOT-BC291549  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-8 2222 Lassen Six miles south of Ravensdale 1676 Comment
  CAS-BOT-BC291550  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-14 2335 Lassen Burgers Springs Experimental Range 1706 Comment
  UC1035998  Crepis modocensis subsp. modocensis Helen K. Sharsmith 1955-6-22 4497 Lassen 5 mi beyond Blue Lake (on road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  UC581275  Crepis monticola G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2332 Lassen Burgess Springs Experimental Range 1700 Comment
  JEPS87522  Crepis occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-28 5606 Lassen Rd 35N04 n Hwy 44 (nw edge of valley, ne of Poison Lake); Harvey Valley, Aspen Well 1725 Comment
  UC1136843  Crepis occidentalis L. R. Short and W. Gansberg S- 361 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1871 Comment
  UCD130972  Crepis occidentalis J. E. Stuart 1930-6-12 2158 Lassen near Constantia, Reno Highway. 15 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
  CAS-BOT-BC376564  Crepis occidentalis subsp. occidentalis M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  UC581276  Crepis occidentalis subsp. occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2320 Lassen w-facing slope about 1 mi below summit; Black Mt. 1940 Comment
  HSC81647  Crepis occidentalis subsp. pumila Thomas W. Nelson, Jane P. Nelson 1980-7-6 6031 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
  POM253179  Crepis occidentalis subsp. pumila A. A. Heller 1938-6-23 15201 Lassen Along Highway 36 in the valley east of Fredonyer Pass Comment
  JEPS107791  Crepis pleurocarpa Lowell Ahart, John Dittes 2005-6-2 11934 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  RSA716276  Crepis pleurocarpa L. Ahart, John Dittes 2005-6-2 11934 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  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-BC299712  Crocidium G. Schoolcraft 1987-4-29 1686 Lassen Susanville 1554 Comment
  UC1483839  Crocidium multicaule G. Schoolcraft 1980-4-6 199 Lassen near base of Bass Hill (along Hwy 395, near city dump) 1280 Comment
  CHSC71895  Crypsis schoenoides Vernon H. Oswald; Lowell Ahart 1998-9-8 9577 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Near the highway. 1255 Comment
  CHSC23441  Cryptantha K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5840 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  CHSC5053  Cryptantha L. B. Barlow 1967-6-23 15 Lassen 1/4 mi. north Eagle Lake Biological Station, east central side of Eagle Lake. 1554 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
  CHSC29917  Cryptantha affinis Robin L. Ondricek 1978-7-22 108 Lassen 1977 Burn area, 1.8 mi e of Coleman Rd. on Lassen Co. Road A1. 1950 Comment
  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
  HSC30196  Cryptantha circumscissa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19301 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS67504  Cryptantha circumscissa W. L. Jepson 1918-8-2 7761 Lassen Beckwith Pass 1463 Comment
  UC507028  Cryptantha simulans George A. Fischer and Irwin H. Johnson 1933-7-14 F- 260 Lassen Lassen Forest 1783 Comment
  POM72225  Cryptantha torreyana Marcus E. Jones 1897-6-25 7103 Lassen Susanville. 1341 Comment
  UC1541364  Cycladenia humilis var. humilis H. E. and S. T. Parks 1928-6-20 Lassen Mt. Lassen, Drakesbad 2133 Comment
  UC193142  Cycladenia humilis var. humilis J. G. Lemmon Lassen near Shasta (Black Cone); ; Black Cone, near Shasta Comment
  POM369283  Cynoglossum occidentale Anstruther Davidson s.n. Lassen Summit- Eagle Lake 1829 Comment
  CHSC60861  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1993-6-28 5624 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. On the bed of a small branch of Pine Creek 1737 Comment
  CAS-BOT-BC70537  Cystopteris fragilis Clare B. Hardham 1961-6-16 7461 Lassen Diamond Peak Comment
  UC1037350  Cystopteris fragilis Leo Whitney 1935-5-26 3142 Lassen 10 mi e Adin (lava bluff at Ash Creek) Comment
  NY703182  Dalea ornata A. Tiehm 1984-6-7 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest of Litchfield 1372 Comment
  CHSC59574  Damasonium californicum Mary Meyer 1980-6-1 559 Lassen Along creek off Champs Flat Road. 1677 Comment
  JEPS32210  Damasonium californicum Jos. Grinnell 1928-6-26 Lassen Poison Lake Lassen Peak Region, Poison Lake 1737 Comment
  JEPS124716 Image available Damasonium californicum B. Corwin 1964-7-1 123 Lassen Under bridges between Bieber and New Bieber on rte. 299. Comment
  JEPS124717 Image available Damasonium californicum M. L. Wheelis 1964-6-30 137 Lassen Second bridge (to the north) between Bieber and New Bieber. Comment
  POM172479  Danthonia californica var. americana Franklin P. Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
Read comments
Jul 11 2013
  CHSC66420  Danthonia unispicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7803 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  UC1136812  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  CAS-BOT-BC141772  Dasiphora fruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50669 Lassen Cirque-like hollow ne. of Diamond Mt. - Sierra Nevada 2255 Comment
  SD51285  Deinandra lobbii Darley F. Howe 1961-8-4 3135 Lassen 11.5 miles east of McArthur on U. S. Highway 299. Comment
  JEPS79213  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 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
  CHSC7730  Delphinium andersonii Beverley J. Wise 1969-5-18 83 Lassen 7.7 mi. West of Susanville on Las. Co. Rd. 215 on the south side of the road. 1341 Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  UCD39136  Delphinium andersonii Beecher Crampton 1964-6-27 7093 Lassen West of Termo. Madeline Plains. Comment
  UCR244044  Delphinium andersonii Jim Andre 1993-6-1 19714 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  UC1609175  Delphinium depauperatum Vernon H. Oswald and Lowell Ahart 1993-6-28 5601 Lassen Rd. 35NO4 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley 1725 Comment
  SEINET10675839 Image available Delphinium nudicaule A. Arthur Heller 1938-6-4 Heller 15149 Lassen More or less shaded gravelly slope in the yellow pine forest one mile east of Fredonyer Pass on Highway #36, Arid Transition Life Zone. 1707 Comment
  JEPS107808  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
  RSA716264  Delphinium nuttallianum L. Ahart 2005-6-2 11955 Lassen Along poor dirt road, 1 mile E of Anderson Ranch home, Long Valley, 4.5 miles air N of the intersection of Scott Road and Hwy 70, 6 miles NW of Hallelujah jct. 1426 Comment
  CAS-BOT-BC116049  Delphinium nuttallianum M. M. Hanna 1956-6-3 910 -913 Lassen Grassy slope above Hiway 299. 87.3 mi. E. of Redding, Calif. Comment
  CAS-BOT-BC116050  Delphinium nuttallianum Mrs. E. C. Sutliffe 1957-7-21 863 Lassen Drakesbad, Lassen Volcanic Park Comment
  CAS-BOT-BC194256  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-7 12463 Lassen Near Feather Lake Comment
  CAS-BOT-BC194257  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-9 12517 Lassen Bridges Creek Spring Comment
  CAS-BOT-BC194260  Deschampsia cespitosa subsp. cespitosa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49435 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  CHSC113927  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-8-20 19719 Lassen All over the meadow, 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. 1894 Comment
  CAS-BOT-BC192739  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50650 Lassen South and southeast of Diamond Mt. 2286 Comment
  UC1131560  Deschampsia danthonioides A. Simontacchi 1940-6-8 827 Lassen Halls Flat Ranger Station Lassen Nat'l Forest, Halls Flat Quad., Halls Flat Ranger Sta Comment
  CAS-BOT-BC201807  Deschampsia elongata George W. Gillett 1957-7-28 925 Lassen Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake 1859 Comment
  CAS-BOT-BC201812  Deschampsia elongata Clare B. Hardham 1971-8-22 18375 Lassen Diamond Mountain 2346 Comment
  CAS-BOT-BC201882  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Banks of Widow Lake 2072 Comment
  CHSC7706  Descurainia incana Beverley J. Wise 1969-4-29 38 Lassen 3.4 mi. north of Susanville on Rnd Valley Rd off Hwy 139. 1371 Comment
  JEPS100347  Descurainia incana Dean W. Taylor 2001-6-28 17817 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  UCD114633  Descurainia longipedicellata Grady L. Webster 1989-5-13 7709 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  SEINET5343182  Descurainia paradisa var. paradisa F. B. Headley 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  UC1126907  Descurainia pinnata A. Simontacchi 1940-6-4 808 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1783 Comment
  CHSC48325  Descurainia pinnata subsp. halictorum Vernon Oswald 1986-5-28 2053 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  CHSC7705  Descurainia sophia Beverley J. Wise 1969-5-23 39 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 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
  UC1126908  Descurainia sophia A. Simontacchi 1940-6-8 828 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  SJSU13913  Dieteria canescens N. A. Hopkins 1986-8-28 1382 Lassen along County Road 33 (Scott Road), Lower Long Valley, N of Highway 70 & E of the Beckwourth Pass Comment
  CAS-BOT-BC290958  Dieteria canescens var. shastensis John Thomas Howell 1934-7-6 12434 Lassen Harvey Valley Comment
  CHSC14038  Dieteria canescens var. shastensis S. Villard 1973-7-12 62 Lassen Slopes of Galatin Peak. Comment
  CHSC64867  Dieteria canescens var. shastensis Vernon H. Oswald 1995-6-26 6937 Lassen Modoc Plateau. Gravel pit on the e side of Ash Valley Rd. (Lassen 527) 0.2 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  JEPS40723  Dieteria canescens var. shastensis Duncan Dunning 1921-8-15 Lassen near Facht (railroad station) (sw of Westwood Junction); Robbers Creek Comment
  UC1037283  Dieteria canescens var. shastensis Leo Whitney 1933-8-21 1716 Lassen ca 14 mi w Eagle Lake (Harvey Mountain near Harvey Valley); Lassen National Forest, Harvey Mountain 1737 Comment
  UC1119608  Dieteria canescens var. shastensis H. S. Yates 1936-8-11 6077 Lassen near Johnstonville; Susanville Quad. Comment
  HSC63968  Dimeresia howellii Teresa Prendusi 1980-7-14 Lassen Ash Valley; along Ash Valley Rd. 15 mi. W of Madeline 1524 Comment
  CHSC26185  Diplacus mephiticus J. P. Kroessig 1977-5-23 28 Lassen Small scattered population at Eagle Lake Biological Station (CSUC), ca 37 km nnw of Susanville. 478 Comment
  CHSC36479  Diplacus mephiticus Margaret E. Halloran 1982-6-6 10 Lassen Pine Creek just below fish trap where Pine Creek empties into Eagle lake. Comment
  CHSC71133  Diplacus mephiticus Vernon H. Oswald; Lowell Ahart 1998-5-22 9118 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  CHSC64898  Diplacus nanus Vernon H. Oswald 1995-6-26 6936 Lassen Modoc Plateau. Gravel pit on the e side of Ash Valley Rd. (Lassen 527) 0.2 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  CAS-BOT-BC208722  Distichlis spicata G. Schoolcraft 1986-9-10 1675 Lassen Along N. shore of Eagle Lake Comment
  CAS-BOT-BC208727  Distichlis spicata John Thomas Howell 1973-7-10 49764 Lassen Near Westwood - Sierra Nevada 1554 Comment
  CHSC7693  Distichlis spicata Beverley J. Wise 1969-5-23 129 Lassen 34.5 mi. S.E. of Susanville on Las. Co. Rd 320. 1249 Comment
  CHSC91302  Distichlis spicata Lowell Ahart; John Dittes 2005-6-2 11922 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC60743  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  SEINET10929826  Distichlis spicata var. stricta Alan A. Beetle 1941-6-28 Beetle 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak, open meadow. Assoc. Stipa pulchra, Hordeum, Koeleria cristata. Comment
  HSC17851  Dodecatheon alpinum Jim Vaughn 1956-8-11 Lassen Horseshoe Lake, Mt. Lassen National Park 1982 Comment
Read comments
Apr 28 2013
  SEINET8561548  Dodecatheon conjugens M. J. Williams 1969-5-24 s.n. Lassen Ca 0.5 mile N of Bogart Ranger Station. Comment
  UCR227662  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  CHSC112464  Downingia bacigalupii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18738 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
  JEPS120905  Downingia bacigalupii Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18738 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA340002  Downingia bacigalupii Noel Holmgren, Patricia K. Holmgren 1980-7-3 9482 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  SJSU3292  Downingia bacigalupii J. W. Tilden 1960-6-27 1525 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  JEPS124625 Image available Downingia bacigalupii Laurel Loeblich 1964-7-1 65 Lassen Collected 17.6 mi. North of Susanville on Highway 1 in ditch on west side of road about 2 meters from road. Comment
  RSA505399  Downingia bacigalupii Rimo Bacigalupi 1957-6-28 5999 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline. 1616 Comment
  SEINET12329644  Downingia bacigalupii N. H. Holmgren, Holmgren, P. K. 1980-1 9472 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) W of US Highway 395 from a turnoff 10.3 km 1615 Comment
  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
  CHSC60887  Downingia bicornuta var. bicornuta Vernon H. Oswald; Lowell Ahart 1993-7-8 5649 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  JEPS14500  Downingia bicornuta var. bicornuta Joseph Grinnell 1928-6-26 Lassen Poison Lake 1737 Comment
  UC890609  Downingia bicornuta var. bicornuta Elmer I. Applegate 1929-6-24 5883 Lassen just n Bieber (nw corner of Lassen County) Comment
  CHSC54182  Downingia cuspidata Vernon H. Oswald 1991-5-28 4623 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  CHSC60888  Downingia cuspidata Vernon H. Oswald; Lowell Ahart 1993-7-8 5647 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 33N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  CDA42329  Downingia elegans G. D. Barbe 1982-7-12 3869 Lassen Grasshopper Valley; 0.8 miles northeast of Highway 139, on South Grasshopper Road. 0 Comment
  JEPS23858  Downingia insignis Peter H. Raven 1958-6-17 13282 Lassen 1.9 mi s Ravendale (along U.S. Highway 295) Comment
  UC1924242  Downingia insignis Debra Valov 2004-6-8 2004242 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UCR163273  Downingia insignis Jim Andre 1993-6-29 1410 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  JEPS106977  Downingia insignis Lisa Schultheis 1995-6-27 226 -95 Lassen East side of 395, 1.6 miles south of Ravendale Comment
  RSA574802  Downingia insignis R. R. Halse 1975-6-20 1200 Lassen Along county road 502, 2.3 miles N of Ravendale. 1614 Comment
  CHSC65304  Downingia laeta Vernon H. Oswald; Lowell Ahart 1995-8-14 7199 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 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
  SEINET8039620  Downingia laeta G. Schoolcraft 1995-6-6 2493 Lassen Laver Spring. 1585 Comment
  CHSC61140  Draba verna var. aestivalis Vernon H. Oswald; Lowell Ahart 1993-5-12 5391 Lassen Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road. 1652 Comment
  CAS-BOT-BC401538  Drosera rotundifolia G. Schoolcraft 1997-8-5 2648 Lassen Along Robbers Creek near Robbers Spring 1798 Comment
  CAS-BOT-BC527338  Drymocallis glandulosa var. reflexa John Thomas Howell 1977-6-22 52405 Lassen West of Susanville near the confluence of Willard Creek and Susan River, Sierra Nevada 1432 Comment
  CHSC71071  Eatonella nivea Vernon H. Oswald; Lowell Ahart 1998-5-22 9122 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., 5 mi NE of Doyle. 1463 Comment
  JEPS121273  Elatine Lowell Ahart, John Dittes 2013-7-23 18890 Lassen Man-made pond, about 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS121283  Elatine Lowell Ahart, John Dittes 2013-7-22 18882 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC112750  Elatine californica Lowell Ahart; John Dittes 2013-7-22 18882 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET9342679  Elatine californica Robert Thorne, DeBuhr, Larry 1975-8-22 47212 Lassen Lassen County Comment
  RSA252456  Elatine gracilis R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39135 Lassen Said Valley Reservoir. Comment
  RSA0011453  Eleocharis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46985 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC113615  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  CDA7765  Eleocharis acicularis var. acicularis G. Schoolcraft 1995-5-22 s.n. Lassen Morgan Spring N of Skedaddle Mtns. Comment
  CHSC66272  Eleocharis bella Vernon H. Oswald 1996-6-24 7851 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow just S of the cabins. 1633 Comment
  RSA0009565  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  JEPS64130  Eleocharis palustris Brown and Wieslander 1922-7-30 76 Lassen Martin Springs, Eagle Lake Comment
  UCD54570  Eleocharis parvula Ellen Dean; Dawn Cunningham 2005-10-25 2753 Lassen East of the town of Susanville. Property N of California Correctional Facility. Western side of property. Extensive seasonal wetland system that was used until June 2005 as receiving area for geothermal heating system used by Correctional Facility and prison. 1248 Comment
Read comments
Oct 5 2010
  CAS-BOT-BC197349  Elymus Melissa A. Berry 1957-6-30 s.n. Lassen Highway 395 1280 Comment
  UC767490  Elymus X saundersii R. F. Hoover 1940-9-28 4631 Lassen Susanville Comment
  CHSC115611  Elymus cinereus Lowell Ahart; John Dittes 2015-7-14 20327 Lassen On the north 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. 1271 Comment
  SEINET10521741  Elymus cinereus Paul Gallian, David B. Dunn 1971-6-2 Gallian 490 Lassen 5 mi. S. of Milford near Honey Lake on U.S. Hwy 395; along roadside in grass - Artemesia tridentata assoc.; Quercus - Jeffrey Pine on mountain range to west at approximately the same altitude. 1250 Comment
  CAS-BOT-BC227483  Elymus elymoides Margaret Williams; Steven Williams 1974-7-26 74 -L-42 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  JEPS123452  Elymus elymoides Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -148 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  RSA152628  Elymus elymoides I. L. Wiggins, Dorothy Wiggins 1961-6-11 16343 Lassen 13.5 mi. E. of Susanville Comment
  CHSC13858  Elymus elymoides subsp. elymoides George Ellmore 1973-6-25 735 Lassen 10 m. from water on west side of Pelican Point on West Eagle Lake. 1560 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
  CHSC111249  Elymus elymoides var. elymoides L. P. Janeway; B. Castro 2012-7-3 10943 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  UCD62571  Elymus repens Beecher Crampton 1954-7-5 2059 Lassen Hwy 36, 4.5 miles west of Susanville. Comment
  RSA0105549  Elymus spicatus L. P. Janeway, B. Castro 2015-6-5 11761 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  JEPS119960  Elymus trachycaulus Lowell Ahart, John Dittes 2012-7-9 18297 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1024916  Elymus trachycaulus Leo Whitney 1935-6-29 3362 Lassen Bieber Comment
  UC1136823  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassen <National> Forest 1737 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
  CAS-BOT-BC204358  Elymus trachycaulus subsp. trachycaulus John Thomas Howell 1973-7-10 49776 Lassen Fredonyer Pass 1737 Comment
  CHSC29894  Elymus trachycaulus subsp. trachycaulus Robin L. Ondricek 1978-8-2 113 Lassen North edge of dam at Murrers Upper Meadow. 1548 Comment
  SEINET6657093  Elymus triticoides Leo Whitney 1934-8-4 2128 Lassen Sheepshead, ca. 10 miles northwest of north end of Eagle Lake, Lassen National Forest.; 0 1890 Comment
  CHSC7704  Ephedra viridis Beverly J. Wise 1969-5-18 44 Lassen 13.4 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. Comment
Read comments
Dec 31 2006
  NY70852  Ephedra viridis N. H. Holmgren 1970-6-25 4380 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junction with California 70 (Hallelujah Junction) 1524.0 Comment
  UC1537115  Ephedra viridis Gordon H. True Jr. 555 Lassen n slope Hot Spring Mountain 1981 Comment
  UC565391  Ephedra viridis Junea Kelly 1937-5-30 Lassen near Horse Lake Comment
  CHSC30566  Ephedra viridis Sori H. Shad 1970-7-10 23 Lassen Found along road 4.11, 9 miles east intersection with Hwy 139. 2286 Comment
  JEPS121278  Epilobium brachycarpum Lowell Ahart 2013-7-22 18844 Lassen W margin of duck field, about 20 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1523739  Epilobium campestre Gary Schoolcraft 1981-9-1 571 Lassen se of Bieber (along road) 1255 Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC29945  Epilobium ciliatum subsp. ciliatum Robin L. Ondricek 1978-8-6 115 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  HSC95173  Epilobium ciliatum subsp. ciliatum Gordon Leppig, J. Cromwell 1997-7-27 617 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC118481  Epilobium ciliatum subsp. ciliatum Don Lepley 2015-6-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Southwest corner of Eagle Lake, roughly a half-mile northeast of entrance to Christie Campground, close to current lakeshore. UTM 683603 x 4493237 1559 Comment
  NY1001463  Epilobium ciliatum var. ciliatum G. Schoolcraft 1990-7-11 2108 Lassen McKabe Spring north of Moon Lake 1669 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
  HSC95302  Epilobium oregonense Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 527 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95331  Epilobium oregonense Gordon Leppig, J. Cromwell 1997-7-27 605 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1609447  Epilobium oregonense Vernon H. Oswald and Lowell Ahart 1993-8-3 5741 Lassen just e Caribou Wilderness (e of Silver Lake, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  CHSC99141  Epilobium torreyi Lowell Ahart; John Dittes 2008-6-19 14878 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC25085  Equisetum laevigatum K. R. Stern 1967-7-1 2465 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC30622  Equisetum laevigatum John Steiner 1975-6-23 5 Lassen Upper Murrer's Meadow. 1536 Comment
  CDA18386  Eragrostis cilianensis G. D. Barbe 1978-8-31 2425 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  CHSC76105  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8229 Lassen Along the north side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC4266  Eremogone congesta K. R. Stern 1967-6-24 2422 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CAS-BOT-BC174204  Eremogone congesta var. congesta Louella Bass 1973-6-3 91 Lassen Elysian Valley 1325 Comment
  CHSC89740  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8141 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
  CAS-BOT-BC174201  Eremogone congesta var. congesta Clarence R. Quick 1964-7-29 64 -88 Lassen Blacks Mt. Experimental Forest 1798 Comment
  NY1057003  Eremogone congesta var. simulans B. J. Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  CHSC64796  Eremothera minor Vernon H. Oswald 1995-5-24 6766 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  SEINET3995252  Eremothera minor A. Tiehm 1980-1 5752 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  UC1483823  Eremothera minor G. Schoolcraft 1980-6-11 267 Lassen w Wendel 1219 Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  RSA0124149  Eriastrum signatum Christopher Davidson 1975-6-7 2763 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC133906  Eriastrum sparsiflorum Dr. Gustav Eisen July 1891 Lassen Honey Lake Comment
  UC133905  Eriastrum wilcoxii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UC506538  Eriastrum wilcoxii J. Burtt Davy Jun 17 1897-Jun 24 1897 3408 Lassen Amedie Honey Lake Valley Comment
  POM40990  Ericameria bloomeri Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  SEINET5741365 Image available Ericameria bloomeri Lowell E. Urbatsch, Vensa Karaman 2000-1 7714 Lassen Collected along Forest Road 37N11, off of CA 139. 1220 Comment
  UC1523743  Ericameria bloomeri Gary Schoolcraft 1981-8-25 565 Lassen w side of Eagle Lake (along main road) Comment
  UCR57484  Ericameria bloomeri R. D. Goeden, Don W. Ricker 1989-8-24 32 Lassen Lassen National Forest, Black Gulch Road, c. 2 mi. west of Little Valley Road 1524 Comment
  CHSC30574  Ericameria nauseosa Sori H. Shad 1970-6-19 37 Lassen Found north of E.L.B.S. in front of the Library. 1524 Comment
  CAS-BOT-BC298176  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298177  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298182  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  UC527348  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 Lassen 3 mi from Wendel (on the road to Janesville); Honey Lake Valley 1219 Comment
  UC747216  Ericameria nauseosa var. speciosa G. Thomas Robbins 1945-10-7 2152 Lassen 2-3 mi ne of Burgess Spring (Harvey Valley, se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  CAS-BOT-BC294188  Ericameria nauseosa var. speciosa L. A. Waitzinger 1923-8-16 s.n. Lassen Susanville, north slope of Inspiration Pt Comment
  CAS-BOT-BC299483  Ericameria nauseosa var. washoensis Gary Schoolcraft 1984-8-27 1369 Lassen Upper Tuledad Canyon 1676 Comment
  CDA18270  Erigeron G. D. Barbe 1974-8-2 1935 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET10721387  Erigeron Paul Gallian, David B. Dunn 1971-6-2 Gallian 462 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UCD131606  Erigeron aphanactis Jack Major 1966-6-23 s.n. Lassen just north of Hallelujah Junction (at junction of State Highway 70 and U.S. Highway 395). 1432 Comment
  JEPS97423  Erigeron aphanactis var. aphanactis Vernon H. Oswald and L. Ahart 1995-6-19 6890 Lassen T30N R15E SE1/4 SE1/4 Sect. 12, 4440 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 3.6 mi e of Hwy. 395. Many-stemmed herbaceous perennial from a branching and tap-rooted caudex 1353 Comment
  UC74068  Erigeron aphanactis var. aphanactis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Honey Lake Valley, Long Valley Comment
  CAS-BOT-BC33472  Erigeron barbellulatus Milo Samuel Baker; Franklin P. Nutting 1895-7-30 s.n. Lassen Silver Lake Comment
  SEINET240401  Erigeron bloomeri S. L. Welsh, ND Atwood 2001-6-14 28153 Lassen E of Hwy 395, rd to Rams Horn Spring campground 1539 Comment
  UCD131273  Erigeron bloomeri Beecher Crampton 1960-6-18 5723 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  SEINET10617399  Erigeron bloomeri David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17790 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC294483  Erigeron bloomeri var. bloomeri L. P. Janeway 1990-7-4 3768 Lassen On knob ca 0.8 mi NE of Meadowview Peak 1981 Comment
  CAS-BOT-BC294488  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-7-8 12513 Lassen Harvey Valley Comment
  CHSC87122  Erigeron bloomeri var. bloomeri L. P. Janeway 2001-6-20 7198 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  CHSC92714  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2005-7-10 8486 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
  JEPS89691  Erigeron bloomeri var. bloomeri Dean W. Taylor 1974-6-14 3719 Lassen Janesville Grade Road at summit 4 mi ssw of Janesville (Plumas National Forest); Northern Sierra Nevada, Plumas National Forest 1706 Comment
  UC1368785  Erigeron bloomeri var. bloomeri John L. Strother 1970-5-23 952 Lassen about 6 mi n Honey Lake 1280 Comment
  UC1523793  Erigeron bloomeri var. bloomeri Gary Schoolcraft 1981-6-3 603 Lassen w of Susanville (near Cheney Creek); Cheney Creek 1463 Comment
  UC1609105  Erigeron bloomeri var. bloomeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  UC584273  Erigeron compositus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2286 Lassen s of Janesville (summit Thompson Peak); Thompson Peak 2346 Comment
  CAS-BOT-BC296848  Erigeron divergens John Thomas Howell; Alice Eastwood 1940-6-11 7979 Lassen Big Valley Mts. Comment
  JEPS97306  Erigeron divergens Vernon H. Oswald and L. Ahart 1995-8-14 7193 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  UC1924196  Erigeron divergens Debra Valov 2005-8-20 2005234 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC295978  Erigeron divergens Gary Schoolcraft 1984-9-4 1372 Lassen Fredomyer Mtn. 1737 Comment
  HSC28860  Erigeron eatonii var. plantagineus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19253 Lassen Harvey Valley near Cone Springs Comment
  UC1136837  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  CHSC101040  Erigeron elegantulus John Dittes 2008-5-22 1523 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 300 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, rocky volcanic toe-slope on northeast side of Willow Creek. 482 Comment
  JEPS95073  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  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
  SBBG8113  Erigeron inornatus H. and M. Dearing 1938-7-1 2236 Lassen Susanville 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
  UC1136838  Erigeron inornatus var. inornatus L. R. Short and D. Gish 1936-8-3 S- 397 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1795 Comment
  UC31511  Erigeron linearis Mrs. C. C. Bruce 1898-6-1 2182 x Lassen Madeline plains Madeline Comment
  CHSC77195  Erigeron nevadincola G. Schoolcraft 1998-6-30 Lassen N. slope of Ft. Sage Mtns. 1950 Comment
  CHSC30596  Erigeron philadelphicus Marc Held 1972-7-7 46 Lassen 1 mile north of Gallatin house. Comment
  CDA19737  Erigeron pumilus D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  RSA768024  Erigeron pumilus subsp. intermedius L. Ahart, John Dittes 2010-7-31 16986 Lassen About 3300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  CAS-BOT-BC300121  Erigeron pumilus var. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mi. southeast of Milford, Hwy 395, above Honey Lake 1280 Comment
  NY243318  Eriogonum baileyi G. Schoolcraft 1985-7-29 1490 Lassen Western slopes of Ft. Sage Mtns. 1402.1 Comment
  NY243326  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville. Comment
  RSA616540  Eriogonum cernuum var. cernuum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, 2-5 miles airline W of Nevada border Comment
  JEPS19795  Eriogonum collinum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6009 Lassen ne along US Highway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  NY242501  Eriogonum collinum N. H. Holmgren 1980-7-3 9485 Lassen U.S. Highway 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  NY242507  Eriogonum collinum R. F. Hoover 1940-9-29 4645 Lassen Between Shaffer Mountain and Warren Peak, in low pass. Comment
Read comments
Jul 1 2013
  CAS-BOT-BC246498  Eriogonum douglasii var. meridionale H. D. Ripley; R. C. Barneby 1943-6-13 5712 Lassen South of Johnstonville 1325 Comment
  CHSC68899  Eriogonum douglasii var. meridionale Vernon Oswald; Lowell Ahart 1997-6-24 8639 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  SEINET10479490  Eriogonum elatum Taylor 1982-8-27 Taylor 5055 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  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
  UC2062573  Eriogonum gracile Belinda Lo with Alex Randolph-Lowe 2017-10-9 391 Lassen LASSEN COUNTY: North of Red Rock Road. Comment
  CHSC64805  Eriogonum maculatum Vernon H. Oswald 1995-6-7 6833 Lassen Wendel Rd. (Lassen 320) at milepost 9.5, 4.1 mi e of Wendel, ne of Susanville. 1231 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-BC263048  Eriogonum maculatum Peter H. Raven; Otto T. Solbrig 1958-6-17 13271 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  NY803457  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-21 2945 Lassen Slopes below McKessick Peak ca. 10 miles southeast of Milford, CA-nwse 1504 Comment
  UCD149826  Eriogonum nidularium William Anderson 1963-6-22 s.n. Lassen Lassen County. Wendel Canyon. Comment
  UCD13226  Eriogonum nudum Janet Browder 1973-6-3 98 Lassen Lassen CO. Eagle Lake recreation Area, County Road 201, 1 mile north of airport. Elevation 5100 feet. 1554 Comment
  CHSC68900  Eriogonum nudum var. nudum Vernon Oswald; Lowell Ahart 1997-6-24 8595 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). Along the edge of the road. 1685 Comment
  UCR67381  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M 4 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CAS-BOT-BC261446  Eriogonum nudum var. nudum Mike Vasey 1990-6-30 9056 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CAS-BOT-BC269826  Eriogonum nudum var. pubiflorum John Thomas Howell 1934-7-8 12498 Lassen Spalding's, Eagle Lake Comment
  CHSC13698  Eriogonum nudum var. pubiflorum J. Wolf 1946-6-24 Lassen MeCoy Flat. Eagle Lake. 1645 Comment
  UC1542952  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-9-9 1778 Lassen 3 mi n Bieber; Ash Creek Wildlife Area 1258 Comment
  UC761785  Eriogonum nudum var. pubiflorum R. F. Hoover 1940-9-28 4629 Lassen Susanville Comment
  CAS-BOT-BC269925  Eriogonum nudum var. pubiflorum Barrett Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  OBI76967  Eriogonum nudum var. pubiflorum Anthony Baniaga 2011-8-3 484 Lassen Lassen Natl Forest. Along hwy 44, @ of 31N21. Pine Crk Valley quad T31N R8E sec 10 SE of SE 1800 Comment
  UC1032333  Eriogonum ovalifolium var. ovalifolium A. Simontacchi 1940-6-30 932 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS93951  Eriogonum ovalifolium var. purpureum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the w side of Highway 44 ca. 1 mi nw of its intersection with A21 to Westwood; Windy Hollow, Highway 44 1737 Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  SEINET5331406  Eriogonum pusillum F. B. Headley 1915-5-31 s.n. Lassen Honey Lake. Comment
  RSA713122  Eriogonum spergulinum var. reddingianum L. P. Janeway, B. Castro 2005-7-10 8483 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 and 28N02) and Road 28N01. 1859 Comment
  UC6621  Eriogonum spergulinum var. reddingianum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC272628  Eriogonum spergulinum var. reddingianum H. D. Ripley; R. C. Barneby 1943-6-13 5705 Lassen South of Milford 1859 Comment
  NY283102  Eriogonum sphaerocephalum G. Schoolcraft 1982-7-6 765 Lassen Fort Sage Mountains 1950.7 Comment
  POM105202  Eriogonum sphaerocephalum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA780044  Eriogonum sphaerocephalum Elizabeth A. Kempton 2007-8-15 512 Lassen Near Basehill landfill 1282 Comment
  JEPS94611  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald and Lowell Ahart 1997-5-27 8491 Lassen e side of Hwy 139 at small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  CAS-BOT-BC262740  Eriogonum sphaerocephalum var. sphaerocephalum Brandegee 1892-6-30 s.n. Lassen Susanville Comment
  CHSC1330  Eriogonum sphaerocephalum var. sphaerocephalum V. Holt 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  RSA125406  Eriogonum sphaerocephalum var. sphaerocephalum Arthur R. Kruckeberg 1954-6-22 3323 Lassen Frequent on sagebrush antelope brush slopes betw Susanville and Jonesville on Hwy 395 Comment
  UC85705  Eriogonum sphaerocephalum var. sphaerocephalum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CHSC13455  Eriogonum strictum var. anserinum J. Pitts 1972-6-22 248 Lassen 70 yds. n of Eagle Lake Biology Station. Comment
  CAS-BOT-BC262770  Eriogonum strictum var. proliferum Doris Kildale Gillespie 1930-5-13 9365 Lassen Between Susanville and Janesville Comment
  JEPS85787  Eriogonum strictum var. proliferum Roy E. Buck, Robert A. Price 1988-6-26 1028 Lassen on subsidiary peak ca. 0.5 air km n main summit (Fredonyer Peak; ca. 30 air km nne of Susanville); Fredonyer Peak 2377 Comment
  UC412821  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UC85812  Eriogonum strictum var. proliferum Brandegee June 1892 Lassen Susanville Comment
  UC85813  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  CAS-BOT-BC267893  Eriogonum umbellatum H. D. Ripley; R. C. Barneby 1943-6-13 5413 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC267898  Eriogonum umbellatum John Thomas Howell 1934-7-6 12436 Lassen Harvey Valley Comment
  HSC63828  Eriogonum umbellatum Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  JEPS126484  Eriogonum umbellatum Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -051 Lassen Take Horse Lake Road for about 15 miles. Comment
  CAS-BOT-BC267815  Eriogonum umbellatum var. covillei G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mtn. 2316 Comment
  CHSC59788  Eriogonum umbellatum var. modocense Mary Meyer 1980-5-7 Lassen Scattered beneath sagebrush on Pete's Mesa. 1447 Comment
  CHSC6227  Eriogonum umbellatum var. modocense A. Santos 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  JEPS85788  Eriogonum umbellatum var. modocense Roy E. Buck, Robert A. Price 1988-6-26 1029 Lassen subsidiary peak ca. 0.5 air km n main summit (ca. 30 air km nne of Susanville); Fredonyer Peak 2377 Comment
  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-BC265101  Eriogonum umbellatum var. nevadense Frank W. Peirson 1926-6-24 6848 Lassen A few miles southward from the Madeline Plain Comment
  CDA22684  Eriogonum umbellatum var. nevadense S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC14170  Eriogonum umbellatum var. nevadense K. R. Stern 1974-6-26 5867 Lassen E end of Champs Flat. Comment
  NY399396  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Between Secret Valley and Ravendale. Upper Sonoran Life Zone 1524.0 Comment
  RSA0118779  Eriogonum umbellatum var. polyanthum Lowell A. Ahart, John Dittes 2008-6-19 14882 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
  HSC17448  Eriogonum ursinum H. E. Parks, S. T. Parks Jun 1928 229 Lassen Mt. Lassen N.P., Drakesbad 1982 Comment
  CHSC12414  Eriogonum vimineum Anne Linda Brisk 1969-6-21 16 Lassen 1/4 mi NE of ELBS. 1554 Comment
  JEPS22038  Eriogonum vimineum Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-29 5994 Lassen about 1 mi n Sage Hen siding on Southern Pacific R.R. line (just e of U.S. Highway No.395, 7.0 mi n of Madeline) Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  UCR102423  Eriogonum vimineum G. R. Ballmer 1988-7-21 s.n. Lassen Rest stop between Ravendale and Litchfield on Hwy 395 1657 Comment
  CAS-BOT-BC262358  Eriogonum vimineum M. S. Jussel 1931-9-6 s.n. Lassen On the road to Mt Lassen, five miles from Westwood 1828 Comment
  CAS-BOT-BC300339  Eriophyllum Mike Vasey 1990-6-30 9058 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CAS-BOT-BC300947  Eriophyllum lanatum B. J. Hammerly 1941-6-20 43 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  CHSC4262  Eriophyllum lanatum K. R. Stern 1967-6-24 2414 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  HSC28861  Eriophyllum lanatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19174 Lassen Harvey Valley near Cone Springs Comment
  SEINET10919981  Eriophyllum lanatum David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17793 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  JEPS103221  Eriophyllum lanatum var. achilleoides G. Schoolcraft 1991-7-30 2199 Lassen E. slope of widow mountain 1859 Comment
  SBBG61066  Eriophyllum lanatum var. achilleoides S. W. Hutchinson -Jun-1925 270 Lassen Eagle Lake region 1554 Comment
  UC1249275  Eriophyllum lanatum var. achilleoides Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8469 Lassen 50 mi se Susanville Comment
  CHSC7648  Eriophyllum lanatum var. grandiflorum Beverley J. Wise 1969-5-15 18 Lassen 28.9 mi. east of Susanville on Hwy 395. 1554 Comment
  CHSC25127  Eriophyllum lanatum var. integrifolium Paul Lyman 1970-5-2 27 Lassen Honey Lake Valley; Janesville. Found on Bald mountain, 75 yds. north of cattle guard at south entrance. Comment
  POM66833  Eriophyllum lanatum var. integrifolium Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1924572  Erodium cicutarium Debra Valov 2006-5-29 2006022 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  JEPS124540 Image available Erodium cicutarium Laurel Loeblich 1964-6-30 58 Lassen 19 mi. north of Halleluja Junction (highways 40 and 395) on 395; 1 1/2 mi. south of Doyle. Comment
  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
  CHSC72213  Eryngium alismifolium Vernon H. Oswald 1998-9-14 9620 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  UC1487304  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 1973-6-27 549 Lassen 4.3 mi S of Ravendale (on State Highway 395) Comment
  JEPS66442  Eryngium articulatum L. R. Heckard and P. Rubtzoff 1971-8-3 2703 Lassen 1.3 mi. w. of Pit R. bridge at Bieber 1219 Comment
  UC21010  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3374 Lassen Honey Lake Valley Comment
  CAS-BOT-BC55194  Erysimum repandum Gary Schoolcraft 1982-5-20 668 Lassen Along Shaffer Mountain Road near Highway 395. 1386 Comment
  CAS-BOT-BC55195  Erysimum repandum Louella Bass 1982-5-30 s.n. Lassen Near Karls RR Station on Karls Road northeast of Susanville. Comment
  CAS-BOT-BC55197  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC55198  Erysimum repandum John Thomas Howell 1977-6-23 52397 Lassen Northeast of Susanville on road to Eagle Lake. Comment
  CAS-BOT-BC150214  Erythranthe Clare B. Hardham 1969-8-28 17453 G Lassen West of Janesville Comment
  CHSC4929  Erythranthe guttata L. G. Bennett 1967-6-28 54 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC7752  Erythranthe guttata Beverley J. Wise 1969-5-18 107 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. Comment
  CHSC7754  Erythranthe guttata Beverly J. Wise 1968-8-28 108 Lassen Edge of Crazy Harry Creek where crossed by Las. Co. Rd. 230, 6 mi. north of Hwy 36. 1645 Comment
  CHSC64897  Erythranthe latidens Vernon H. Oswald; Lowell Ahart 1995-6-19 6887 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. Modoc Plateau. 1350 Comment
  SEINET13723865 Image available Erythranthe moniliformis Farris Farris 1936-1 Lassen Diamond Mountain 1829 Comment
  SEINET3836923 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Pratville, Clear Creek 1524 Comment
  CAS-BOT-BC110550  Eschscholzia John Thomas Howell 1955-7-19 30814 Lassen Sierra Nevada. East side of Beckwourth Pass. 1493 Comment
  CAS-BOT-BC403146  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-16 8344 Lassen Janesville Comment
  CAS-BOT-BC403147  Eschscholzia californica Alice Eastwood; John Thomas Howell 1940-6-11 7964 Lassen Eastern Fall River Valley Comment
  NY499985  Eschscholzia californica B. J. Ertter 1987-7-24 7297 Lassen Ca. 3/4 mile east-northeast of Beckwourth Pass at end of old crumbling paved road 1524.0 Comment
  CAS-BOT-BC403152  Eschscholzia californica Mrs. H. C. Cantelow 1935-6-8 926 Lassen 13 mi. W. of Bieber 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
  JEPS117958  Eucephalus breweri Zoya Akulova-Barlow Sep 2006 Lassen Sierra Nevada, Dyer Mountain Comment
  CHSC115563  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2015-7-13 20312 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET8687854 Image available Euthamia occidentalis L. Kerr, A. Rossman, T. Sparer 2012-10-31 NV 030 -858 Lassen Head north on I-580/US 395 past Reno. Right onto Red Rock Road. Go for about one mile and park on right side of road. Hike about 300 feet west down to creek and collection area on irght side of road. 1362 Comment
  GMDRC6957  Festuca idahoensis J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31434 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
  UCR244064  Festuca microstachys Jim Andre, G. L. Clifton 1993-6-9 19690 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
  CHSC117218  Festuca microstachys var. microstachys Lowell Ahart; John Dittes 2016-6-7 21002 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCD66162  Festuca occidentalis L. Whitney 1935-6-27 3337 Lassen Lassen National Forest. Camp 10, Fruit Grower's Supply Company. Comment
  JEPS71219  Festuca rubra Brown and Wieslander 1922-7-23 80 Lassen Comment
  UC1024808  Festuca rubra Leo Whitney 1935-6-23 3284 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD66360  Festuca rubra R. Tofsrud 1947-7-1 220 Lassen Cedar Cr. East of Madeline. Comment
  CAS-BOT-BC278931  Festuca rubra George W. Gillett 1957-7-29 947 Lassen Lassen Volcanic National Park. Along trail between Butte Lake and Snag Lake 1859 Comment
  CHSC6252  Fragaria virginiana P. Balch 1955-6-1 Lassen Stephens meadows. 1905 Comment
  UCD39134  Frasera albicaulis Beecher Crampton 1964-6-26 7083 Lassen 32 miles n.w. Susanville west end of Harvey Valley. Comment
  HSC26683  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19251 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC504438  Fritillaria atropurpurea John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50694 Lassen South and southeast of Diamond Mt., Sierra Nevada 2286 Comment
  CHSC42207  Fritillaria pudica Kimber Hostetter 1986-3-26 1 Lassen Eagle Lake Field Station, Eagle Lake, ca. 17 km nw of Susanville. Ca. 0.5 km n of korm of CSUC field station. 1700 Comment
  SEINET3886822  Fritillaria recurva J. P. Smith, J. O. Sawyer 1972-5-6 5235 a Lassen Lassen National Forest; Boundary Campground on State Route 89 south of Burney.; 0 1067 Comment
  CHSC7720  Galium asperrimum Beverley J. Wise 1969-5-18 96 Lassen 18.2 mi. East of Susanville on Co. Rd 216 off Lassen Co. Rd. 215. 1554 Comment
  UC1523737  Galium bolanderi Lisa Ganio 1981-6-17 24 Lassen Beaver Creek 1280 Comment
  CDA42121  Galium boreale subsp. septentrionale L. Ahart, John Dittes 2005-6-2 11981 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  CHSC59813  Galium multiflorum Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In rocks on lower Balls Canyon wall. 1341 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
  CHSC66866  Galium trifidum var. pusillum Vernon H. Oswald; Lowell Ahart 1996-9-10 8275 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CAS-BOT-BC478879  Gayophytum John Thomas Howell; Gordon H. True 1973-7-31 50035 Lassen On road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  HSC87162  Gayophytum diffusum J. D. Prouty 1978-6-27 1 Lassen E of Eagle Lake, Black Mt. Rd., SE of Eagle Lake Field Station 1616 Comment
  CHSC29860  Gayophytum diffusum subsp. parviflorum Robin L. Ondricek 1978-6-26 70 Lassen .5 mi n of jct. with 5.16 on road to ELFS. 1572 Comment
  UC1122617  Gayophytum heterozygum A. Simontacchi 1940-6-24 892 Lassen 0.2 mi nnw Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  SEINET10492287  Gayophytum nuttallii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 870 Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  UC1122618  Gayophytum racemosum A. Simontacchi 1940-6-6 821 Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA271916  Gayophytum ramosissimum Christopher Davidson 1975-6-7 2759 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 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
  UC1037290  Gentianella amarella subsp. acuta Leo Whitney 1934-7-24 1690 Lassen ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest 1737 Comment
  RSA0026780  Geranium carolinianum Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1220 Comment
  JEPS61452  Geranium viscosissimum Brown and Wieslander 1922-7-24 11 Lassen Martin Springs Eagle Lake Comment
  CHSC71389  Geranium viscosissimum var. nervosum Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9261 Lassen Forest Route 38N04 between Hwy. 139 and Williams Reservoir 1.2 mi east of the road to Smith Flat, 2.0 mi northeast of Hwy. 139 at Willow Creek Campground. 1664 Comment
  SJSU10496  Geum macrophyllum H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  SEINET6702766  Geum macrophyllum var. perincisum G. Schoolcraft 1994-8-2 2393 Lassen About 2 miles northwest of Boot Lake 2438 Comment
  CHSC68869  Geum triflorum Vernon Oswald; Lowell Ahart 1997-6-24 8649 Lassen South of Susanville at the pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  CHSC99305  Geum triflorum Lowell Ahart; John Dittes 2008-6-19 14872 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
  JEPS60511  Geum triflorum Brown and Wieslander 1922-7-23 22 Lassen Eagle Lake, Martin Springs Eagle Lake; , Martin Springs Comment
  UC773877  Geum triflorum L. R. Short, J. Warren 1936-6-23 S 423 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1764 Comment
  SEINET14626750  Gilia brecciarum subsp. brecciarum D. L. Neal 1960-5-7 R- 34 Lassen Red Rock area, ca 10 miles S of Doyle. 1463 Comment
  JEPS94702  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-5-22 9107 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains 1371 Comment
  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
  NY964494  Gilia inconspicua var. sinuata W. W. Eggleston 1911-5-20 6743 Lassen Vicinity of Doyle Station 1290 Comment
  JEPS17737  Gilia leptomeria Rimo Bacigalupi with G. T. Robbins 1955-7-21 5422 Lassen 17.5 mi e U.S. 395 (1.3 mi w of Nevada State line, s of Smoke Creek Ranch Road, Rush Creek); Rush Creek, s of Smoke Creek Ranch Road 1353 Comment
  RSA370318  Gilia salticola A. Tiehm 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert. 1448 Comment
  CAS-BOT-BC280600  Glyceria elata John Thomas Howell 1976-7-19 51984 Lassen Gold Run Creek southwest of Susanville 1386 Comment
  UC1483863  Glyptopleura marginata G. Schoolcraft 1980-5-9 232 A Lassen near state line s of High Rock Ranch 1219 Comment
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  UC1536868  Gnaphalium palustre G. H. True Jr. 1938-7-14 956 Lassen near Janesville 1280 Comment
  CHSC29864  Gratiola ebracteata Robin L. Ondricek 1978-8-9 123 Lassen In mud at the ne edge of Mahogany Lake. 2057 Comment
  CHSC60922  Gratiola ebracteata Vernon H. Oswald; Lowell Ahart 1993-7-8 5650 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  HSC27351  Grayia spinosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19302 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  UC1035882  Hackelia californica Annie M. Alexander and Louise Kellogg 1946-8-13 5155 Lassen w side of Eagle Lake (top of grade) Comment
  CAS-BOT-BC231158  Hackelia cusickii Mrs. A S. Baldwin 1894-6-1 s.n. Lassen Lava Beds Comment
  CHSC63386  Hackelia cusickii Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6309 Lassen Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. 1767 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
  UC24814  Hackelia cusickii M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mountains Comment
  CDA3149  Halogeton glomeratus E. E. Fix Jun 1949 Lassen Western Pacific Railroad right-of-way on Nevada-California line. Near Herlong. 0 Comment
  CDA3153  Halogeton glomeratus E. E. Fix Jun 1948 Lassen Western Railroad right-of-way. 0 Comment
  CDA36354  Halogeton glomeratus B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  RSA98051  Halogeton glomeratus Thomas H. Kearney, J. T. Howell 1951-8-20 28229 Lassen Honey Lake Valley near Herlong. 1280 Comment
  UCD98902  Halogeton glomeratus R. Tofsrud; J. M. Tucker 1950-7-26 1978 Lassen Herlong Army Ordnance Depot, southeastern Lassen County. Comment
  CHSC12456  Hastingsia alba Robert W. Severin 1969-6-26 34 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach; 3 mi. s of E. L. B. S. 1645 Comment
  UC303064  Helenium bigelovii Pearl Safford Lassen Susanville [uncertain locality] Comment
  CAS-BOT-BC314766  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  CAS-BOT-BC314767  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  CDA18385  Helianthus bolanderi G. D. Barbe 1978-8-31 2424 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  CHSC91775  Helianthus bolanderi G. Douglas Barbe 1978-8-31 2424 Lassen Modoc National Forest. Roadside, Hwy 139, NW of Willow Creek Guard Station, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). 1417 Comment
  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
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  CAS-BOT-BC305660  Helianthus cusickii Philip A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale 1310 Comment
  RSA0012972  Helianthus nuttallii subsp. nuttallii H. L. Mason 1947-8-11 13492 Lassen Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  RSA783699  Heliotropium curassavicum R. R. Halse 2010-8-25 8086 Lassen Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake. 1559 Comment
  SEINET11197274 Image available Hemizonella minima G. Schoolcraft 1997-6-26 2601 Lassen W of Hwy 395 between Janesville and Milford 1676 Comment
  CHSC77177  Heracleum lanatum G. Schoolcraft 1997-7-30 2618 Lassen W slope of Dimond Mtn. 1950 Comment
  CHSC61154  Hesperochiron californicus Vernon H. Oswald; Lowell Ahart 1993-5-12 5377 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood), at a large, meadowy flat covered with dwarf sagebrush and scattered small pines. 1729 Comment
  UC773897  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley Lassen Forest, Harvey Valley 1706 Comment
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  JEPS117584  Hesperolinon micranthum Lowell Ahart, John Dittes 2010-7-31 16975 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
  JEPS127352  Hesperolinon micranthum Lowell Ahart, John Dittes 2016-7-13 21123 Lassen 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS17743  Hesperolinon micranthum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5416 Lassen along Smoke Creek Ranch Rd. 6 mi e jnct. with U.S. 395; Bull Flat, Deep Creek 1428 Comment
  JEPS32314  Hesperolinon micranthum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  NY1002355  Hesperolinon micranthum J. T. Howell 1934-6-10 11887 Lassen 12 miles north of Susanville, on road to Horse Lake Comment
  UC1523712  Hesperolinon micranthum Gary Schoolcraft 1981-6-25 478 Lassen East Fork of Wellard Creek 1584 Comment
  UC17262  Hesperolinon micranthum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  UC867806  Hesperolinon micranthum C. L. Hitchcock 1940-5-26 6618 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  CAS-BOT-BC280679  Hesperostipa comata Margaret Williams; Steven Williams 1974-7-26 74 -L-43 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC280680  Hesperostipa comata John Thomas Howell 1934-6-10 11841 Lassen Near Plumas Junction Comment
  NY783473  Heuchera rubescens B. J. Ertter 1987-6-16 7201 Lassen Skeedaddle Mountains on northeast side of Honey Lake; between Hot Springs Peak and VABM 2255.5 Comment
  UC477493  Hieracium albiflorum A. G. Brenneis 1928-7-3 8 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  CHSC6255  Holodiscus microphyllus var. glabrescens M. West 1946-7-7 Lassen Cone Lake near east border of Lassen Nat. Park. 1828 Comment
  CHSC99281  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS118270  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes 2011-6-20 17482 Lassen On the east bank of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  CHSC41842  Hordeum brachyantherum subsp. brachyantherum P. V. Caldwell 1972-7-12 273 Lassen 300 meters from Eagle Lake on Papoose Creek. Comment
  JEPS95804  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald and L. Ahart 1999-6-9 9751 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  UC53617  Hordeum brachyantherum subsp. brachyantherum M. S. Baker and Frank Nutting 1894-7-4 Lassen Dixey Valley Comment
  UCD85366  Hordeum brachyantherum subsp. brachyantherum Beecher Crampton 1954-7-5 2060 Lassen Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD85769  Hordeum jubatum R. Tofsrud 1947-7-1 226 Lassen Between Johnstonville and Standish. Comment
  UCD85785  Hordeum marinum subsp. gussoneanum A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3368 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  JEPS114764  Hordeum murinum subsp. leporinum Lowell Ahart, John Dittes 2008-6-20 14915 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC143982  Horkelia fusca var. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  JEPS87416  Hydrophyllum capitatum var. alpinum Vernon H. Oswald and Lowell Ahart 1993-5-12 5378 Lassen 3.5 mi nw of A21 to Westwood (on n side of road and on e side of Canal crossing Hwy 44) 1729 Comment
  UC1567386  Hydrophyllum capitatum var. alpinum G. Schoolcraft 1989-5-8 1872 Lassen about 1 mi e Silva Flat Reservoir 1737 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
  SEINET5518818  Hydrophyllum occidentale var. watsonii C. G. Gulling 1905-1 s.n. Lassen Big Meadows 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
  RSA294534  Hymenolobus procumbens A. Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. 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
  NY52523  Iliamna bakeri G. Schoolcraft 1983-8-3 1129 Lassen 5 miles w of Madeline 1767.8 Comment
  SD61029  Iliamna bakeri Darley F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mountains; Modoc National Forest. 1829 Comment
  UC106649  Ipomopsis aggregata T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UC1123846  Ipomopsis aggregata A. Simontacchi 1940-7-1 884 Lassen 4.6 mi ssw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle 1889 Comment
  HSC17038  Ipomopsis aggregata Fred J. Kindel 1955-6-28 Lassen Susan River Comment
  UC1483837  Ipomopsis aggregata subsp. bridgesii G. Schoolcraft 1980-7-29 341 Lassen Widow Peak, Bureau of Land Management 1584 Comment
  POM75265  Ipomopsis aggregata subsp. formosissima Marcus E. Jones 1897-6-28 10201 Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  RSA0063614  Ipomopsis aggregata subsp. formosissima G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 256 Lassen Forest: Lassen. 1784 Comment
  SD7674  Ipomopsis congesta Mrs. R. M. Austin 1880-1 Lassen Lassen Peak. Comment
  CHSC63410  Ipomopsis congesta subsp. congesta V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6354 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
  CHSC75515  Ipomopsis congesta subsp. congesta Vernon H. Oswald; Lowell Ahart 1999-6-9 9745 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
  CHSC4265  Iris missouriensis K. R. Stern 1967-6-24 2425 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC4936  Iris missouriensis A. E. Anderson 1967-5-24 33 Lassen In Murrer's Upper Meadow, 4 mi. se Eagle Lake Biological Sta. 1554 Comment
  CHSC7635  Iva axillaris Beverley J. Wise 1969-5-23 23 Lassen 34.5 mi. E of Susanville on La. Co. Rd. 320. 1249 Comment
  HSC5876  Iva axillaris M. T. Milligan 1964-8-6 203 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  RSA293373  Iva axillaris subsp. robustior Reino Alava 1957-7-5 1140 Lassen Along Highway no. 395, 4.4 miles S of Ravendale. Comment
  RSA719895  Iva axillaris subsp. robustior Michael A. Vincent, K. Levings 2006-7-29 12908 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
  CDA8046  Iva xanthifolia Lee Wheeler 1963-7-16 Lassen Susanville. 0 Comment
  JEPS121288  Juncus balticus subsp. ater Lowell Ahart, John Dittes 2013-7-23 18903 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC93553  Juncus bryoides Lowell Ahart; John Dittes 2005-6-2 11960 Lassen Long Valley, moist meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  HSC26016  Juncus bryoides F. J. Hermann 1972-5-17 24752 Lassen 8 mi. W of Susanville 1677 Comment
  CHSC117196  Juncus bufonius var. congestus Lowell Ahart; John Dittes 2016-6-7 20987 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. 1289 Comment
  CHSC93707  Juncus capillaris Lowell Ahart; John Dittes 2005-6-2 11959 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  CHSC66416  Juncus dudleyi Vernon H. Oswald; Lowell Ahart 1996-6-17 7817 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the edge of a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 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
  OBI77304  Juncus hemiendytus var. hemiendytus Anthony Baniaga 2011-7-9 436 Lassen Lassen NF. SW Pine Crk Valley. Pine Crk valley quad T31N R8E sec 10 NE of NE 1718 Comment
  CAS-BOT-BC110768  Juncus mertensianus John Thomas Howell; Gordon H. True 1973-8-1 50249 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road south of Susanville. 1950 Comment
  UC1136936  Juncus mexicanus George A. Fischer and Irwin H. Johnson 1933-7-12 F- 238 Lassen Patterson Flat Lassen National Forest 1737 Comment
  HSC95327  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS87450  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  RSA201265  Juncus nevadensis J. T. Howell 1959-9-23 34884 Lassen Lassen County: N end of Juniper Lake. 2058 Comment
  UC1609497  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  JEPS107949  Juncus tiehmii Lowell Ahart, John Dittes 2005-6-2 11959 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  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
  CAS-BOT-BC81149  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen on Gold Run Creek, 5 miles from Susanville 1310 Comment
  UCD133775  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen 5 miles from Susanville; dry hills on Gold Run Creek. 1310 Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
Read comments
Apr 29 2013
  SEINET10966161  Juniperus occidentalis Mary Susan Taylor 1974-5-4 Taylor 217 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  SEINET10613513  Juniperus occidentalis subsp. australis Mary Susan Taylor 1982-5-29 Taylor 4570 Lassen T22N R17E e1/2 sw1/4 sec 23. Loyalton quad. In sagebrush Scrub along dirt road paralleling Highway 395 on its east side, ca 1/2 mile north of 395 jct with Scott Road, ca 20 miles northof Reno. 1525 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
  NY20362  Juniperus osteosperma N. H. Holmgren 1970-7-28 4625 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UCR3634  Juniperus osteosperma Frank C. Vasek 1964-8-13 640813- 05 Lassen US Hwy 395, 2.5 mi east of the Sierra Co. line Comment
  UCR3784  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 03 Lassen Calif. Hwy 70 (alt. US Hwy 40), 1.6 mi west of its junction w/ US Hwy 395 Comment
  SEINET11064452  Juniperus osteosperma D. Charlet 1993-7-13 1581 Lassen Fort Sage Mountains at OHV trailhead. 1490 Comment
  UC303069  Kelloggia galioides Pearl Safford Lassen Susanville [uncertain locality] Comment
  UC773943  Kelloggia galioides L. R. Short and D. Gish 1936-6-10 S- 379 Lassen Burgess Spring Experiment Range; Lassen National Forest 1813 Comment
  UC1483872  Kochia americana G. Schoolcraft 1980-5-8 231 Lassen s. end Cal-Neva Lake 1219 Comment
  CAS-BOT-BC180806  Kochia scoparia John Thomas Howell 1974-7-8 50509 Lassen Susanville - Sierra Nevada 1295 Comment
  CAS-BOT-BC180802  Kochia scoparia Louella Bass 1981-10-14 s.n. Lassen Standish Comment
  UC1024754  Koeleria macrantha Leo Whitney 1933-8-9 2298 Lassen ca 25 mi w of upper end of Eagle Lake Hall's Flat; Lassen National Forest, w of upper end of Eagle Lake 1737 Comment
  UC1024950  Koeleria macrantha Leo Whitney 1935-6-28 3316 Lassen ca 13 mi w of n end Eagle Lake (Squaw Valley); , w of n end Eagle Lake Comment
  UCD85786  Koeleria macrantha Beecher Crampton 1960-6-18 5727 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  HSC103612  Kyhosia bolanderi Thomas W. Nelson, Jane Nelson 1985-8-10 8004 Lassen Along north side of Silver Lake 1829 Comment
  CHSC113011  Lactuca serriola Lowell Ahart; John Dittes 2013-7-23 18887 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117513  Lagophylla ramosissima Lowell Ahart; John Dittes 2016-7-13 21109 Lassen West of the pond, 80 yards east of Stonebreaker Road, 0.6 mile south of County Road A-2, 5.3 miles (air) east of Beiber, 7.3 miles 9air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC71865  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1998-9-8 9575 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  JEPS114637  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-20 14901 Lassen Sides of a vernal pool, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UC1573178  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout (.5 mi s of the Modoc County Line); Pit River Watershed, Big Valley 1249 Comment
  CHSC7632  Layia glandulosa Beverley J. Wise 1969-5-3 25 Lassen 4.3 mi. east on Las. Co. Rd. 338 beyond junction with Hwy 395. 1554 Comment
  JEPS94780  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1998-6-4 9143 Lassen s of Constantia (spur road on n side of Red Rock Road o.6 mi e of Highway) 1389 Comment
  UC1609230  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  UC74071  Layia glandulosa J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat. Long Valley Comment
  CHSC4847  Lemna minor R. Carter 1967-7-13 590 Lassen Along shore of Willow Creek. Comment
  CAS-BOT-BC88819  Lepidium campestre John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49226 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC64774  Lepidium dictyotum var. dictyotum Vernon H. Oswald 1995-5-24 6773 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel). On a flat bordering the road. 1219 Comment
  CAS-BOT-BC89168  Lepidium draba Louella Bass 1977-6-12 77 -4 Lassen Elysian Valley. Comment
  CAS-BOT-BC89718  Lepidium latifolium John Thomas Howell 1975-7-23 51413 Lassen Sierra Nevada. On Highway 395 between Johnstonville and Janesville. 1280 Comment
  CHSC111251  Lepidium perfoliatum L. P. Janeway; B. Castro 2012-7-2 10936 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  JEPS17738  Lepidium perfoliatum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5420 Lassen 6.8 mi e Smoke Creek Ranch Rd. jct with U.S. Hwy 395 (along Smoke Creek Ranch Rd, center of Bull Flat); Bull Flat 1402 Comment
  CHSC99130  Leptosiphon bolanderi Lowell Ahart; John Dittes 2008-6-19 14892 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  POM74003  Leptosiphon ciliatus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC13629  Leptosiphon harknessii M. S. Taylor 1974-6-25 290 Lassen Vernal pool ca. 4 ft s of road, ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC4771  Leptosiphon harknessii R. Carter 1967-6-27 562 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology station. 1584 Comment
  JEPS87460  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  UCR201583  Leucocrinum montanum Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  SEINET6170686  Leucophysalis nana G. Schoolcraft 1999-6-29 2849 Lassen E edge of Madeline Plains ca 9 mi NE of Ravendale 1615 Comment
  CHSC68756  Lewisia nevadensis Vernon H. Oswald; Lowell Ahart 1997-5-27 8523 Lassen Meadow along Coyote Flat Draw crossing Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.6 mi north-east of Hwy. 139. 1731 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
  JEPS128173  Leymus cinereus M. C. Mahoney, J. A. Nash 2017-8-22 CA 350 -88 Lassen South of Pilgrim Lake of Buckhorn Byway. From Susanville take Highway 395 north to Buckhorn Byway and follow the road east past Buckhorn Reservoir and Dry Lake. Then take a right onto an unnamed road that is right on the CA/NV border. Continue for 1/2 mile. Population is on either side of the road. Comment
  UC1037143  Leymus cinereus Leo Whitney 3335 Lassen Camp 10 <of> Fruit Grower's Supply Company Lassen National Forest Comment
  UC573939  Leymus cinereus H. S. Yates 1936-8-12 9086 Lassen McKenzie Meadow Susanville Quadrangle Comment
  UC921130  Leymus cinereus Vesta Holt 1945-8-12 Lassen in meadows near shore of Eagle Lake Comment
  RSA129541  Leymus condensatus C. W. Hanks 1934-8-18 57 Lassen Sierraville; N. W. part of Upper Long Valley 1616 Comment
  CAS-BOT-BC274465  Leymus triticoides Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  UC1037138  Leymus triticoides Leo Whitney 1925-6-28 3364 Lassen Bieber Comment
  UCD86623  Leymus triticoides G. Douglas Barbe 1974-8-20 1924 Lassen Upper Long Valley. Hallelujah Junction, NW corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UCD87762  Leymus triticoides L. G. Stiles 1927-6-2 s.n. Lassen Milford. Comment
  JEPS28660  Ligusticum grayi George W. Gillett 1957-7-21 870 Lassen Lassen Volcanic Nat'l Park, Cameron Meadow 1950 Comment
  JEPS96064  Ligusticum grayi Vernon H. Oswald and Lowell Ahart 1996-8-1 8127 .1 Lassen s.-s.w. Westwood (ca. 2 mi. n. of Dyer Mt. Lookout, Forest Rd. 28N56 (D-line), on downhill side of rd.) 1737 Comment
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  POM109714  Lilium pardalinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 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
  CHSC112422  Limosella aquatica Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18755 Lassen Near a drainage filled with dirt from construction of a pond, about 50 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1025096  Linanthus harknessii Leo Whitney 1934-5-27 1639 Lassen near Crater Lake 1828 Comment
  CHSC6204  Linanthus pungens 1944-7-9 Lassen Eagle Lake. Dow Butte. 2042 Comment
  UC1107337  Linanthus septentrionalis Jean Langenheim 1957-6-22 4367 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  CHSC13605  Lithophragma Lynn R Thomas 1969-4-17 96 Lassen Ca. 200 yds. up hillside e of Rice Canyon Rd., 5 mi n of junction with 'back road to Litchfield'. Ca 12 mi e of Susanville. 1310 Comment
  CAS-BOT-BC435427  Lithophragma glabrum John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 1524 Comment
  CHSC60688  Lithophragma glabrum Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5273 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  UC1258492  Lithophragma glabrum G. Schoolcraft 1980-4-8 201 Lassen along Shaffer Mountain Peak road just w Hwy. 395; Shaffer Mountain Peak road 1402 Comment
  CAS-BOT-BC428423  Lithophragma tenellum John Thomas Howell 1934-6-14 12129 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC68766  Lithophragma tenellum Vernon H. Oswald 1997-5-27 8503 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. 1546 Comment
  JEPS87440  Lithophragma tenellum Vernon H. Oswald and Lowell Ahart 1993-6-3 5478 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02), 3.7 mi n Hwy 44 at spur rd 32N02E (between Poison Lake and Susanville, se side of Pine Creek Valley); Pine Creek Valley, btw Poison Lake and Susanville 1731 Comment
  SBBG125299  Lithospermum arvense L. Ahart, J. Dittes 2012-7-11 18351 Lassen N edge of a farmed field, S side of hwy, ca. 100 yards E of Cable Rd and Pittville Rd, 2.16 mi NNE of Pittville, 3955 feet E of Lassen-Shasta County Line, Fall River Valley 1205 Comment
  UC1924235  Lithospermum ruderale Debra Valov 2004-6-9 2004259 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  SEINET8588539  Lomatium austiniae 2015-5-20 NV 030 -1059 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, go over median, right on Country lane, follow to end of road. 1520 Comment
  SEINET8588616  Lomatium austiniae S. Jesselson, A. Ortega, J. White, A. Rosenblum 2015-5-28 NV 030 -1064 Lassen Plumas allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line. 1547 Comment
  CHSC64858  Lomatium bicolor var. leptocarpum Vernon H. Oswald; Lowell Ahart 1995-6-19 6901 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395. 1444 Comment
  JEPS15825  Lomatium bicolor var. leptocarpum M. S. Baker and Franklin P. Nutting 1894-6-20 Lassen near Bieber (Big Valley); Big Valley Comment
  CHSC77178  Lomatium canbyi G. Schoolcraft 1993-4-27 2255 Lassen Ash Valley RNA/ACEC. 1554 Comment
  RSA452590  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1776682  Lomatium hendersonii G. Schoolcraft 1996-3-28 2516 Lassen Sage Hen summit near Lassen/Modoc county line 1463 Comment
  CHSC67146  Lomatium macrocarpum James D. Jokerst 1991-5-29 3308 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  JEPS96076  Lomatium nevadense var. nevadense Vernon H. Oswald and Lowell Ahart 1996-6-24 7862 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows, ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of the meadow ca. 0.4 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC29850  Lomatium nudicaule Robin Ondricek 1978-6-7 42 Lassen Lower Dry Lake along outer edges of shoreline. 1645 Comment
  POM78132  Lomatium nudicaule Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA125874  Lomatium nudicaule P. H. Raven, Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  UC1479582 Image available Lomatium ravenii Gary Schoolcraft 1980-5-1 216 A Lassen Painters Flat, W edge 1716 Comment
  UC1483812 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen S of Ravendale 1615 Comment
  UC1599737 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen s. Ravendale 1615 Comment
  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
  CHSC29890  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-8 50 Lassen .6 mi e of jct. With main road to ELFS on road to Murrers Upper Meadow. 1554 Comment
  CHSC42630  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2059 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  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
  RSA370319  Lomatium vaginatum A. Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10345 Lassen 6.7 road miles east of Highway 395 on dirt road to Smoke Creek and the Smoke Creek Desert 1418 Comment
  CAS-BOT-BC200922  Lotus A. A. Heller 1938-7-28 15300 Lassen About a mile east of Westwood 1524 Comment
  CDA27193  Lotus crassifolius L. E. Allen 1967-6-4 Lassen Pinecrest Ranch, 0.5 mile south of Susanville. 0 Comment
  JEPS88234  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7818 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, at 6.0 mi. post e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC15724  Lotus oblongifolius var. oblongifolius M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  JEPS117484  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2010-7-31 16999 Lassen On the north side of the road, about 15 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC862219  Lotus purshianus var. purshianus A. A. Heller 1938-7-28 15300 Lassen just e Westwood Comment
  SEINET3559881 Image available Lotus tenuis Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8474 Lassen Near Honey Lake, 1 mi SE of Milford, 26 mi SE of Susanville 1311 Comment
  UCD169260  Lotus uliginosus S. L. Welsh; N. D. Atwood 2001-6-14 28145 Lassen Secret Valley Spring, at Cherry Creek rest stop, Hwy 395. 1520 Comment
  JEPS128088  Ludwigia palustris Lowell Ahart, John Dittes 2013-7-23 18904 Lassen About 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC198253  Lupinus John Thomas Howell 1976-7-19 51950 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA0027355  Lupinus John F. Emmel 1994-7-17 1330 Lassen Summit area of Observation Peak. 2378 Comment
  RSA624904  Lupinus Jeffrey Huber 1971-6-2 110 Lassen 4 mi. S of Adin along Calif. Hwy. 139. Comment
  CHSC91929  Lupinus andersonii L. P. Janeway; B. Castro 2005-7-10 8482 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  JEPS97402  Lupinus angustiflorus Vernon H. Oswald and L. Ahart 1994-7-24 7131 Lassen T31N R7E ca. center of N side of Sec. 23, 6400 ft, High Cascade Range, Red Fir Forest. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek 1950 Comment
  UC126936  Lupinus angustiflorus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Leke Silver Lake Comment
  JEPS95013  Lupinus arbustus Vernon Oswald and Lowell Ahart 1997-6-24 8635 Lassen s of Susanville (near the small pond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
Read comments
Jun 8 2007
  SEINET5327673  Lupinus arbustus H. Durio 1979-5-23 s.n. Lassen Meyers Ranch, Adin 1372 Comment
  SEINET5327708  Lupinus arbustus J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA Comment
  SEINET10484619  Lupinus arbustus subsp. calcaratus Jeffrey Huber 1971-6-2 Huber 110 Lassen 4 miles s of adin along cal hwy 139 in basalt - caly; valley floor in artemisia 1341 Comment
  UC1609458  Lupinus argenteus Vernon H. Oswald and Lowell Ahart 1993-6-14 5514 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd. (Lassen A1) 0.5 mi sw Spaulding Tract Rd. (Rd. 518, 33N89)); w of Eagle Lake 1810 Comment
  CAS-BOT-BC196338  Lupinus argenteus var. argenteus H. D. Ripley; R. C. Barneby 1944-5-30 5975 Lassen Ravendale 1676 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-BC208763  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-5-23 47353 Lassen Johstonville, 1 mile south, Highway 395 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
  JEPS117258  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2010-7-31 16977 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
  NY736922  Lupinus argenteus var. heteranthus N. H. Holmgren 1978-6-11 8925 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance 1800 Comment
  NY736924  Lupinus argenteus var. heteranthus T. W. Nelson 1980-7-6 6015 Lassen Along Adin-Madeline road ca. 0.5 mile west of Moll Reservoir 1585 Comment
  NY736926  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Along U.S. Highway #395 just outside of Johnstonville. Upper Sonoran Life Zone Comment
  NY736929  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 miles west of Doyle Comment
  NY736932  Lupinus argenteus var. heteranthus J. Huber 1971-6-2 140 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  UC127527  Lupinus argenteus var. heteranthus J. Burtt Davy Jun 17-24, 1897 Lassen Honey Lake Valley Comment
  UC127554  Lupinus argenteus var. heteranthus Baker and Nutting 1894-7-30 Lassen near Bieber (Big Valley); , near Bieber Comment
  CHSC91927  Lupinus argenteus var. meionanthus L. P. Janeway; B. Castro 2005-7-10 8477 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  SEINET3145129  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 mi S of Doyle 1372 Comment
  RSA91348  Lupinus caudatus F. W. Peirson 1926-6-24 6852 Lassen Madeline Plain. 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
  SEINET10490708  Lupinus caudatus subsp. caudatus David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17748 Lassen 3 mi. S of hallelujah jct, on us hwy 395, jct of us 395 and calif. 70; Along Roadside and in artemesia-grassland field. Comment
  SEINET10969761  Lupinus caudatus subsp. caudatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 511 Lassen 6 mi. N of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  RSA87160  Lupinus confertus Mary DeDecker 1955-8-25 262 Lassen Honey Lake: Highway 395. Comment
  SEINET10488723  Lupinus lepidus Williams 1983-7-31 Williams 126 Lassen Roadside near janesville. Sandy soil with sagebrush and bitterbrush. Great Abundance 1280 Comment
  SEINET5332986  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy 395, ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  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
  CHSC65103  Lupinus lepidus var. sellulus Vernon H. Oswald; Lowell Ahart 1995-7-24 7138 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. Locally common in dry soil at the NE corner of the impoundment on Pine Creek. 1905 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
  UCD107961  Lupinus leucophyllus G. Schoolcraft 1994-6-9 2347 Lassen 1 1/2 m. NE of Hwy. 139 on Grasshopper-Temo Rd. 1615 Comment
  JEPS114708  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  SBBG30552  Lupinus microcarpus var. microcarpus D. Myrick 1968-6-19 1957 Lassen Hwy 395, 23 mi S of Alturas 1524 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
  SEINET10452155  Lupinus nevadensis Mary Susan Taylor 1982-5-29 Taylor 4567 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  SBBG67020  Lupinus obtusilobus S. W. Hutchinson -Jun-1925 525 Lassen Eagle Lake 1554 Comment
  SEINET10871085  Lupinus polycarpus Marcus E. Jones 1897-6-26 Jones s.n. Lassen Susanville, perkin's ranch. 1463 Comment
  SEINET6191823 Image available Lupinus sellulus subsp. sellulus B. J. Cox 1971-1 3186 Lassen 3 mi E of Westwood on CA 36 1608 Comment
  SEINET10451647  Lupinus sellulus var. sellulus Billy Joe Cox 1971-6-11 Cox 3190 Lassen 6 mi w of susanville, on california hwy. 36; In volcanic soil; association with Pinus ponderosa forest. 1615 Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  CHSC4269  Luzula macrantha K. R. Stern 1967-6-24 2419 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagel Lake Biological Station. 1554 Comment
  CDA40734  Lycopus americanus Yeager Aug 1929 s.n. Lassen Honey Lake District. 0 Comment
  CDA40729  Lycopus uniflorus Gordon Leppig, J. Cromwell 1997-7-27 625 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC66727  Lythrum portula Vernon H. Oswald; Lowell Ahart 1996-8-1 8104 Lassen Mountain Meadows Reservoir of Westwood. On shore of reservoir NE of Indian Ole Dam. 1539 Comment
  RSA0011458  Madia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46977 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  SFV7756  Madia citriodora T. Gordon, K. Kimbrough 1975-8-15 1212 Lassen 16 miles south of Adin. 1402 Comment
  CAS-BOT-BC343697  Madia elegans John Thomas Howell 1974-7-10 50556 Lassen Elysian Valley 1325 Comment
  JEPS40375  Madia elegans W. L. Jepson 1939-8-11 19373 Lassen Milford 1280 Comment
  SEINET11601319 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  UC296085  Madia elegans E. B. Babcock and J. L. Collins 1926-7-21 88 Lassen near Peter Lassne's grave; Susanville Comment
  UC89447  Madia elegans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC343692  Madia elegans Gary Schoolcraft 1985-8-5 1501 Lassen South of Doyle 1402 Comment
  CAS-BOT-BC343696  Madia elegans John Thomas Howell 1974-7-8 50458 Lassen Just north of Milford Comment
  UC1567446  Madia exigua G. Schoolcraft 1989-6-7 1903 Lassen lower ne slopes Shaffer Mtn. 1432 Comment
  CAS-BOT-BC334692  Madia glomerata John Thomas Howell 1973-7-10 49783 Lassen Fredonyer Pass, Sierra Nevada 1737 Comment
  CAS-BOT-BC343061  Madia gracilis Noel H. 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 1680 Comment
  CAS-BOT-BC347442  Malacothrix floccifera John Thomas Howell; Gordon H. True 1973-8-1 50158 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  UCD54571  Malvella leprosa Ellen Dean; Dawn Cunningham 2005-10-25 2754 Lassen E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond. 1248 Comment
  HSC23508  Marrubium vulgare A. E. Anderson 1967-7-11 78 Lassen Around Bly Tunnel outlet, 1 mi. E of rd. to Eagle Lake Biological Station 1555 Comment
  UC62421  Marsilea oligospora Baker and Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC935  Marsilea vestita Fred J. Kindel 1955-6-25 Lassen Eagle Lake Comment
  CHSC112768  Matricaria discoidea Lowell Ahart; John Dittes 2013-7-22 18862 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
  CHSC71221  Matricaria discoidea Vernon H. Oswald; Lowell Ahart 1998-6-4 9138 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 Comment
  UCD107934  Medicago sativa P. B. Kennedy 1927-9-1 s.n. Lassen Standish. Comment
  UC593538  Melica stricta E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1771 Lassen Red Rock 1280 Comment
  SCFS2161  Melilotus albus C. Meek 1969-7-8 77 Lassen On roadside along Hwy 139, 2 mi E of Ravenville Rd. 1524 Comment
  JEPS123854  Mentha arvensis Lowell Ahart, John Dittes 2015-7-14 20337 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CDA40725  Mentha canadensis T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20383 Lassen West end of the dam of Smoke Creek Reservoir. 0 Comment
  CHSC106683  Mentzelia albicaulis B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC71128  Mentzelia albicaulis Vernon H. Oswald 1998-5-22 9137 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  CHSC93683  Mentzelia albicaulis Lowell Ahart; John Dittes 2005-6-1 11888 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  JEPS107449  Mentzelia albicaulis Lowell Ahart, John Dittes 2005-6-1 11888 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  RSA715553  Mentzelia albicaulis L. Ahart, John Dittes 2005-6-1 11888 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  JEPS124818 Image available Mentzelia albicaulis M. L. Wheelis 1964-6-30 128 Lassen 11.5 miles north fo Susanville on highway 139. Comment
  CHSC23509  Mentzelia congesta Wayne O. Baum 1971-7-19 71 -72 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC91323  Mentzelia congesta Lowell Ahart; John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  RSA715543  Mentzelia dispersa L. Ahart 2005-6-1 s.n. Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  UC1137741  Mentzelia dispersa George A. Fischer, Irwin H. Johnson F 229 Lassen Lassen National Forest, Patterson Flat 1737 Comment
  UC872458  Mentzelia dispersa C. L. Hitchcock 1940-5-26 6606 Lassen ca 12 m n Fall River Mills (Shasta Co.) (lava beds, On Fall River) 1371 Comment
  HSC15839  Mentzelia laevicaulis Jim Vaughn 1956-8-17 Lassen Hwy. 36, 1 mi. W of Susanville. Comment
  SJSU8590  Mentzelia laevicaulis M. D. Fleschner 1965-7-12 112 Lassen by Hwy 395 near S shore Honey L c. 2 mi SE of Milford Comment
  UC420650  Mentzelia montana T. S. Brandegee 1892-6-23 Lassen Honey Lake 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-BC429081  Micranthes odontoloma Alice Eastwood 1912-8-22 1861 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CHSC60821  Microseris laciniata subsp. laciniata Vernon H. Oswald; Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. Meadow. 1719 Comment
  CHSC89724  Microseris nutans L. P. Janeway 2004-6-26 8152 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS126531  Microseris nutans Lowell Ahart, John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC6206  Microsteris gracilis C. Palmiter 1946-6-20 Lassen Grasshopper Valley. Eagle Lake. 1624 Comment
  CHSC7702  Microsteris gracilis Beverley J. Wise 1969-4-13 42 Lassen 2.4 mi. east of junction Hwy 395 and Las. Co. Rd. 388 (Smoke Creek Road). 1371 Comment
  RSA74070  Microsteris gracilis subsp. humilis Milo S. Baker 1952-5-23 12414 Lassen Highway 36, east of Chester Comment
  NY963916  Microsteris gracilis var. gracilis W. W. Eggleston 1911-5-29 6762 Lassen Vicinity of Doyle Station 1290 Comment
  SEINET13764907  Mimetanthe pilosa M. J. Williams 1974-7-26 74 -L-29 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UC1776670 Image available Mimulus arvensis G. Schoolcraft 1994-7-6 2356 Lassen About 2 miles west of Boot Lake 2103 Comment
  UC1609128  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  UCD122430  Mimulus breviflorus S. E. Schoenig 1998-7-5 98- 71 Lassen East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track. 1749 Comment
  CHSC118485  Mimulus evanescens Allison Sanger; Loren Gehrung 2003-6-11 Lassen Lassen National Forest. Eagle Lake Ranger District. Near Rankin Flat west of Spalding, roughly 1.2 air miles west of Eagle Lake marina. 1822 Comment
  SEINET10962495  Mimulus mephiticus Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 882 Lassen Collected 3 mi n of milford. On hwy 395 at honey lake campgrounds. Comment
  UC1523772  Mimulus moniliformis Gary Schoolcraft 1981-6-25 475 Lassen Comment
  POM43476  Mimulus moschatus var. longiflorus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  HSC63954  Mimulus nanus var. mephiticus Teresa Prendusi 1980-7-1 Lassen Champ's Flat 1707 Comment
  LA38975  Mimulus nanus var. mephiticus Frank W. Peirson; 1926-6-24 6853 Lassen Madeline Plain Comment
  POM297719  Mimulus nanus var. mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat. Comment
  RSA422243  Mimulus nanus var. mephiticus Christopher Davidson 1975-6-7 2765 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCD55277  Mimulus nanus var. mephiticus Ellen Dean 2006-5-15 3092 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. 1245 Comment
  UCD94000  Mimulus nanus var. mephiticus Dena Grossenbacher; Joel Smith 2008-6-25 893 Lassen Along Forest Service Road 29N43 approximately 1 mile east of junction with Gold Run Road. 1682 Comment
  HSC81185  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. 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
  HSC26596  Mimulus pygmaeus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19272 Lassen In Harvey Valley near Cone Springs Comment
  RSA536395  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-20 629 Lassen Gray's Valley, 4.5 miles N of USFS Bogard Work Center. 1715 Comment
  UC1609129  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1993-6-3 5486 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y) junction with Lassen 21 (32N02) to Eagle Lake (on w edge of valley, between Poison Lake and Susanville); Pine Creek Valley 1731 Comment
  RSA149052  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
  SEINET12319571  Monardella odoratissima J. D. Prouty 1978-1 33 Lassen NW side of Eagle L., Pine Creek just upstream of fish trap on S bank, T32N R10E Sec1 1561 Comment
  CAS-BOT-BC221973  Monardella odoratissima subsp. glauca Alice Eastwood; John Thomas Howell 1940-6-15 8328 Lassen Round Valley Comment
  CHSC65314  Monardella odoratissima subsp. glauca Vernon H. Oswald; Lowell Ahart 1995-8-14 7192 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  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
  RSA122018  Monardella odoratissima subsp. glauca L. R. Short, Wm Gansberg 1936-7-3 S- 467 Lassen MDM, Burgess Spr. Exp. Range. 1849 Comment
  SEINET3152591  Monardella odoratissima subsp. glauca L. S. Rose 1940-6-15 40593 Lassen 10 mi. N of Susanville, Round Valley. 1524 Comment
  UC1137692  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-21 F 274 Lassen Stringer Lassen National Forest 1696 Comment
  LA54185  Monardella odoratissima subsp. glauca Carl Epling; William Robison 1935-7-15 sn Lassen Fredonyor Pass Comment
  CHSC83680  Monardella odoratissima subsp. pallida L. P. Janeway 2001-6-28 7235 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  UC124967  Monardella odoratissima subsp. pallida T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UC506977  Monardella odoratissima subsp. pallida George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen Forest 1722 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
  HSC81781  Monolepis nuttalliana Thomas W. Nelson, Jane Nelson 1980-7-6 6013 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 Comment
  JEPS95874  Monolepis nuttalliana Vernon H. Oswald and L. Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030: T31N R15E Sect. 31, 4420 ft elevation, sagebrush scrub 1347 Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC4797  Montia chamissoi R. Carter 1967-7-7 583 Lassen Collected at W end of reservoir in open wet meadow. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  CHSC64849  Montia chamissoi Vernon H. Oswald 1995-6-26 6924 Lassen Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally bundant in shallow water in a rocky, roadside streamlet. 1712 Comment
  JEPS28404  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen 1 mi above Butte Lake (Lassen Volcanic National Park, Widow Lake Trail); Lassen Volcanic National Park, Widow Lake Trail 1905 Comment
  JEPS87431  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02) 7 air mi w Eagle Lake (5.3 mi e of Lassen 105 (32N28Y), near Summit Camp) 1889 Comment
  JEPS94601  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1997-5-27 8498 Lassen on Forest Route 38N04 0.1 mi e Hwy. 139 ((between Hwy 139 near Willow Springs Guard Station and Coyote Flat), n of Susanville) 1546 Comment
  UC1567410  Montia chamissoi G. Schoolcraft 1989-7-18 1983 Lassen near Buck's Spring (s of Clark's Valley Road) 1874 Comment
  UC1609468  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02) 7 air mi w Eagle Lake (5.3 mi e of Lassen 105 (32N28Y), near Summit Camp) 1889 Comment
  CAS-BOT-BC444696  Montia chamissoi Louella Bass 1977-6-12 77 -3 Lassen Elysian Valley 1325 Comment
  HSC95304  Muhlenbergia filiformis Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 680 Lassen Modo National Forest, Blue Lake Ranch. 1970 Comment
  UC1024665  Muhlenbergia filiformis Leo Whitney 1934-8-15 2184 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  CAS-BOT-BC275159  Muhlenbergia richardsonis Parkison 1916-6-10 19 Lassen Harvey Valley 1676 Comment
  RSA268996  Muhlenbergia richardsonis J. R. Reeder 1972-7-24 5806 Lassen Lassen National Park 1921 Comment
  UCD86900  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 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
  CHSC91312  Myosotis discolor Lowell Ahart; John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC1126100  Myosurus apetalus A. Simontacchi 1940-5-21 761 Lassen 4.1 mi e Blacks Mountain; Lassen National Forest 1737 Comment
  SEINET12093181  Myosurus apetalus M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale. 0.1 mi W of Calif-Nev line Comment
  CHSC68868  Myosurus apetalus var. borealis Vernon Oswald; Lowell Ahart 1997-6-24 8651 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. In a meadow. 2249 Comment
  UC1584005  Myosurus minimus G. Schoolcraft 1990-5-16 2055 Lassen just e Third Butte 1267 Comment
  UC72894  Myosurus minimus Milo S. Baker 1894-7-1 Lassen Dixie Mts Comment
  SEINET2055396  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the South side of Buckhorn road to Ravendale, about 6 road miles West of state line 1698 Comment
  UC1101502  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-9-6 8378 Lassen N arm of Eagle Lake. Comment
  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
  CHSC60903  Nama densa var. densa Vernon H. Oswald; Lowell Ahart 1993-7-8 5658 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  JEPS107300  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11874 Lassen On the south side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 1 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.7 miles (air) northwest of Hallelujah Junction 1461 Comment
  JEPS107795  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11908 -A Lassen On the east side of Scott Road, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1460 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
  CHSC29925  Navarretia breweri Robin Ondricek 1978-6-7 41 Lassen Murrers Upper Meadow, .7 mi E of intersection with main road to ELFS and tunnel crossing. 1560 Comment
  NY1012731  Navarretia breweri N. H. Holmgren 1980-7-3 9491 Lassen Rye Patch Canyon road, 3.4 km (2.1 miles) east of U.S. Highway 395, 14.5 km (9 miles) airline distance southeast of Ravendale 1700 Comment
  UC1124158  Navarretia breweri A. Simontacchi 1940-5-28 774 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1283709  Navarretia breweri Beecher Crampton 1964-6-27 7099 Lassen ca 8 mi se Ravendale (Spanish Springs - Shinn Mtns Recreation area) 1981 Comment
  CHSC118850  Navarretia capillaris L. P. Janeway 2015-8-9 11822 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 Blur Lake. 2179 Comment
  UC1124159  Navarretia divaricata A. Simontacchi 1940-5-28 777 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  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
  JEPS121309  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2013-7-22 18869 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS19816  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 Lassen 7 mi n Madeline (just e of U.S. Highway 395 (about 1 mi n of Sage Hen siding on S.P. Railroad)) 1676 Comment
  UC1594648  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5101 Lassen 1.2 mi se County Rd. A21 (Long Lake on the s of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  UC1594649  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5111 Lassen s side Hwy. 44 (Bridge Creek entering McCoy Flat Reservoir, between Old Station and Susanville); McCoy Flat Reservoir, Bridge Creek 1691 Comment
  UC423667  Navarretia intertexta subsp. propinqua David D. Keck 1930-7-23 952 Lassen 4 mi w Susanville; Sierra Nevada 1463 Comment
  UCD32653  Navarretia intertexta subsp. propinqua Beecher Crampton 1954-7-5 2047 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UC909095  Navarretia intertexta subsp. propinqua G. L. Stebbins Jr. 1949-8-6 4001 Lassen nw of Susanville; Hog Flat 1676 Comment
  UCD48456  Navarretia intertexta subsp. propinqua G. L. Stebbins Jr. 1949-8-6 4001 Lassen Hog flat, NW of Susanville. 1676 Comment
  GMDRC6949  Navarretia leptalea subsp. leptalea J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31423 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
  CHSC6209  Navarretia leucocephala subsp. minima J. B. Kimsey 1946-6-11 Lassen Pine Creek near Eagle Lake. 1554 Comment
  JEPS114396  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  UC1058208  Navarretia leucocephala subsp. minima C. McMillan 1949-6-15 1542 Lassen 5 mi w Bieber Comment
  UC1137761  Navarretia leucocephala subsp. minima August L. Hormay 1934-5-15 Lassen 2 mi n Eldridge's; Lassen Forest 1524 Comment
  UC23714  Navarretia leucocephala subsp. minima M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  UC909096  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 a Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC219366  Nemophila Louella Bass 1973-4-15 26 Lassen Elysian Valley 1325 Comment
  UC107265  Nemophila parviflora var. austiniae T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS126535  Nemophila pedunculata Lowell Ahart, John Dittes 2016-6-7 21010 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  NY1082721  Nemophila pedunculata N. H. Holmgren 1978-6-11 8911 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  UC604678  Nemophila pedunculata Farris Farris 1935-5-20 Lassen five mi sw Susanville; sw of Susanville 1341 Comment
  POM73805B  Nemophila pedunculata Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  CHSC4447  Neoholmgrenia andina K. R. Stern 1967-6-24 2416 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC4841  Nicotiana attenuata R. Carter 1967-7-13 596 Lassen Collected behind water tank. Ca. 500 yds NE of Eagle Lake Biology Station on the e shore. 1524 Comment
  UC1745659  Nicotiana attenuata Annetta M. Carter 1945-9-30 1722 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  UC26151  Nicotiana attenuata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  SJSU11381  Nicotiana attenuata M. R. Kempf 1965-7-12 294 Lassen Eagle Lake 1584 Comment
  UCD126693  Nicotiana attenuata Gerald Dickinson 1963-7-17 108 Lassen at entrance of Eagle Lake recreation site, Highway 139. 1559 Comment
  HSC4506  Nitrophila occidentalis Fred J. Kindel 1955-7-14 Lassen Wendel Comment
  UC1070117  Nothocalais troximoides A. Simontacchi 1940-5-17 732 Lassen 5.7 mi ssw Patterson Mountain; Halls Flat Quad. Comment
  UC584293  Nothocalais troximoides G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2309 Lassen w Milford; crest of range head of Stony Ridge 1950 Comment
  UC635505  Nuphar lutea subsp. polysepala Dorothy Tebbe 1929-7-30 132 Lassen in a pond near Lake Almanor Comment
  HSC16519  Oenothera californica R. G. Means 1962-7-4 64 Lassen 10 mi. N of Doyle, Hwy. 395 1220 Comment
  CHSC106578  Oenothera deltoides C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  NY998663  Oenothera deltoides var. piperi J. T. Howell 1973-5-12 49230 -A Lassen On Highway 395 northwest of Doyl on road to Milford 1280 Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  RSA27327  Oenothera flava C. L. Hitchcock 1940-5-26 6642 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CDA36768  Onopordum acanthium D. B. Joley 1976-6-16 1 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  SD243287  Onopordum acanthium D. B. Joley 1976-6-16 21 Lassen Grasshopper Lake Comment
  CAS-BOT-BC350043  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1845 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  UC1199810  Orobanche corymbosa subsp. corymbosa Herbert L. Mason 1957-7-5 14715 Lassen Madeline Plains (town south of Madeline) Comment
  RSA0077927  Orobanche corymbosa subsp. corymbosa Clare B. Hardham 1961-6-17 7530 Lassen Route 395 between Alturas and Susanville. Comment
  CAS-BOT-BC499906  Orobanche fasciculata Clare B. Hardham no date on label; det'd 1980. s.n. Lassen Sierra Nevada: Gold Rush Creek, S of Susanville Comment
  CAS-BOT-BC499907  Orobanche fasciculata R. J. Dobbs 1928-5-23 s.n. Lassen Strawberry Pek switchback 1219 Comment
  JEPS22322  Orobanche uniflora subsp. occidentalis Peter H. Raven and Otto T. Solbrig 1958-6-16 13251 Lassen 4.5 miles east of Westwood on State Highway 36. Comment
  RSA408800  Orthocarpus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CAS-BOT-BC266614  Orthocarpus cuspidatus Lassen 1927 G. S. Crew 1927-7-15 66 Lassen 1 mile W Bogard Ranger Station 1737 Comment
  POM44256  Orthocarpus hispidus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA715624  Orthocarpus hispidus L. Ahart, John Dittes 2005-6-1 11902 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  RSA39737  Orthocarpus lacerus Philip A. Munz 1947-5-20 11890 Lassen Milford. 1265 Comment
  UCD39135  Orthocarpus luteus Beecher Crampton 1964-6-26 7085 Lassen 35 miles n.w. Susanville, Gray's Valley, 3 miles north Bogard Ranger Station. Comment
  CHSC59070  Oxypolis occidentalis Vernon H. Oswald; Lowell Ahart 1992-8-25 5194 Lassen Lassen Volcanic National Park. Forested slope at the E corner of Snag Lake. 1853 Comment
  SD7889  Oxyria digyna Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
  CAS-BOT-BC413245  Oxytheca dendroidea subsp. dendroidea Robert F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  JEPS25533  Packera eurycephala var. eurycephala Rimo Bacigalupi with Lincoln Constance 1959-6-16 7147 Lassen 3.7 mi s junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  UC1924213  Packera eurycephala var. eurycephala Debra Valov 2004-6-9 2004270 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  CHSC7639  Packera multilobata Beverley J. Wise 1969-5-3 27 Lassen 4.5 mi. east of junction of Hwy 395 and Las. Co. 338 (Smokey Creek Road). 1554 Comment
  CAS-BOT-BC317057  Packera multilobata Louella Bass 1982-5-30 s.n. Lassen Hillside near Biscar dam, Karlo Road northeast of Susanville Comment
  HSC26234  Paeonia brownii D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19260 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC10387  Paeonia brownii J. T. Howell; Gordon H. True; Margaret Williams 1973-5-12 49158 Lassen In cemetary, Janesville 1295 Comment
  CDA5489  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  JEPS107455  Pectocarya penicillata Lowell Ahart, John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  HSC31343  Pectocarya setosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19279 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC7094  Pedicularis attollens subsp. protogyna Francis Whittier Pennell 1940-6-10 25771 Lassen Route 36 road to Coppervale R.S., E of Westwood Comment
  JEPS10727  Pedicularis groenlandica Chesnut and Drew Lassen Lassen Peak Comment
  CHSC4924  Pedicularis semibarbata L. G. Bennett 1967-7-14 142 Lassen Immediate vicinity of Silver Lake. 1975 Comment
  UC1125741  Pedicularis semibarbata A. Simontacchi 1940-5-27 727 Lassen 9.3 mi nw of Crater Lake; Lassen National Forest 1752 Comment
  CHSC12945  Penstemon cinicola K. R. Stern 1974-6-26 5852 Lassen Vicinity of Cold Spring, e of Butte Lake, Cinder Cone trail, Lassen Volcanic National Park. 1859 Comment
  SBBG66504  Penstemon deustus S. W. Hutchinson -Jun-1925 1075 Lassen Eagle Lake 1554 Comment
  CDA41877  Penstemon deustus T. C. Fuller 1963-7-15 10901 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC4441  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-30 2451 Lassen West Central side of Eagle Lake. 1554 Comment
  CHSC93676  Penstemon deustus var. pedicellatus Lowell Ahart; John Dittes 2005-6-2 11979 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
  CHSC25147  Penstemon gracilentus B. Anthony 1967-7-10 263 Lassen Deans Meadow, 6.8 mi from Eagle Lake Biological Station. 1920 Comment
  CHSC43486  Penstemon gracilentus Lowell Ahart 1974-7-9 524 Lassen Along the edge of Eagle Lake Road, about 5 miles west of Susanville. 1584 Comment
  CHSC4862  Penstemon gracilentus R. Carter 1967-7-7 580 Lassen Collected ca. 20 yds from e shore of small reservoir. Dean's Meadow. Comment
  JEPS28707  Penstemon gracilentus George W. Gillett 1957-7-28 936 Lassen near w shore, Widow Lake Lassen Volcanic National Park, Widow Lake 2072 Comment
  HSC22978  Penstemon gracilentus John Pratt 1970-6-21 31 Lassen 1738 Comment
  RSA668193  Penstemon gracilentus Karl Vincent, Charlotte A. Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn. Along CA A1 at Eagle Lake Summit, ca 7.6 mi N of jct. CA 36, ca 7 air miles NW of Susanville. 1933 Comment
  CHSC68881  Penstemon heterodoxus var. heterodoxus Vernon Oswald 1997-6-24 8643 Lassen South of Susanville near the samll pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  SEINET10547576  Penstemon heterodoxus var. shastensis Mary Merello 1993-6-27 Merello 742 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. 1700 Comment
  SEINET5329197 Image available Penstemon heterophyllus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  UC1523811  Penstemon janishiae Gary Schoolcraft 1983-5-31 963 Lassen along Hwy 139 near Upper McBride Sp; near Upper McBride Sp. 1584 Comment
  UC1537429  Penstemon laetus Gordon H. True Jr. 1936-6-25 530 Lassen e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station 1767 Comment
  CHSC66733  Penstemon neotericus Vernon H. Oswald; Lowell Ahart 1996-8-1 8118 Lassen Junction of Forest Rd. 28N56 (D-line) and the spure road to Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1536 Comment
  JEPS11208  Penstemon neotericus Brown and Wieslander 1922-7-23 9 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  UC423645  Penstemon neotericus David D. Keck 1930-7-23 957 Lassen two mi e Westwood; Sierra Nevada, e of Westwood 1493 Comment
  NY627251  Penstemon neotericus K. A. Vincent 1986-7-19 4381 Lassen Sierra Nevada, Roop Mountain; along CA A1 ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  SBBG28997  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen E of Westwood 1493 Comment
  UC423646  Penstemon roezlii David D. Keck 1930-7-23 954 Lassen 12 mi w Susanville; Sierra Nevada 1675 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-BC239500  Penstemon rydbergii var. oreocharis John Thomas Howell 1934-7-7 12460 Lassen Board Ranger Station Comment
  CHSC107320  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2011-6-20 17502 Lassen Meadow, about 40 yards west of the stream, about 50 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC4791  Penstemon rydbergii var. oreocharis R. Carter 1967-7-7 582 Lassen Collected at W end of reservoir. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  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
  UC696714  Penstemon rydbergii var. oreocharis David D. Keck 1938-6-22 15182 Lassen one mi e Westwood; e of Westwood 1524 Comment
  UCSB6193  Penstemon rydbergii var. oreocharis Heller, A. 1938-6-23 Lassen East of Westwood 1493 Comment
  CAS-BOT-BC239509  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen One mile east of Westwood 1524 Comment
  SBBG128900  Penstemon rydbergii var. oreocharis L. Ahart, J. Dittes 2008-6-20 14919 Lassen ca. 100 yards SW of where the levee rd crosses Big Valley Canal in Big Valley, ca. 4 mi (air) NE of Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CHSC12482  Penstemon speciosus Carol Weld 1969-6-20 14 Lassen Road to Dean's Meadow from Five Corners. 1889 Comment
  CHSC25148  Penstemon speciosus L. E. Ray 1967-6-24 52 Lassen Collected ca. 8 miles s ELBS, Deans Meadow. 1950 Comment
  CHSC75549  Penstemon speciosus Vernon H. Oswald; Lowell Ahart 1999-6-9 9747 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
  JEPS101465  Penstemon speciosus Dean W. Taylor 1974-6-14 3721 Lassen Janesville Grade road about 4 miles SSW Janesville, Plumas National Forest 1706 Comment
  JEPS15475  Penstemon speciosus Joseph and Hilda W. Grinnell 1938-6-13 1101 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  JEPS89101  Penstemon speciosus Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  POM194755  Penstemon speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats). 1494 Comment
  UC1226034  Penstemon speciosus Arthur Cronquist, Arthur H. Holmgren 1959-6-16 8455 Lassen 26 mi nw Reno; nw of Reno Comment
  UCR183192  Penstemon speciosus Jim Andre, G. L. Clifton 1993-5-28 7713 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  NY661063  Penstemon speciosus D. D. Keck 1935-6-25 3768 Lassen Ca. 2 miles west of Westwood on road to Chester at Co. line. Comment
  SBBG54516  Penstemon speciosus F. W. Pennell 1940-7-23 26254 Lassen 2 mi N of jct with St Hwy 24, NE of Plumas Comment
  CAS-BOT-BC243409  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville 1280 Comment
  CHSC13647  Penstemon sudans M. S. Taylor 1974-7-13 310 Lassen Ca 15 ft w of Mohagany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  JEPS6881  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen along Highway #36 on slope e Fredonyer Pass (in gravel); e of Fredonyer Pass in gravel 1645 Comment
  UCD55297  Penstemon sudans Ellen Dean; Gary Schoolcraft 2006-5-16 3118 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. 1283 Comment
  RSA0006234  Penstemon sudans Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET5323638 Image available Penstemon sudans G. Schoolcraft 1998-7-8 2752 Lassen Along Hwy 139 about 3 mi. n. os Susanville. 1402 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
  UC565390  Peraphyllum ramosissimum Junea Kelly 1937-5-30 Lassen Mapes Comment
  POM91106  Peraphyllum ramosissimum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles north. 1524 Comment
  CHSC29907  Perideridia bolanderi Robin Ondricek; Wesley Dempsey 1978-6-7 43 Lassen Ridge E of Lower Dry Lake, 12.5 mi N of Susanville. 1706 Comment
  CHSC29932  Perideridia bolanderi Robin Ondricek; Wesley Dempsey 1978-6-7 43 Lassen Lower Dry Lake. 1706 Comment
  CHSC64859  Perideridia bolanderi subsp. bolanderi Vernon H. Oswald; Lowell Ahart 1995-6-19 6900 Lassen Modoc Plateau. Between Litchfield and Rravendale on Smoke Creek Ranch Rd., 7.6 mi e of Hwy. 395. 1444 Comment
  CHSC85820  Perideridia bolanderi subsp. bolanderi David French 1968-6-2 2881 Lassen Near State Hwy. 36, 13.8 mi E of Westwood, 5.1 mi E of Fredonyer Pass; roughly 8 mi W of Susanville. Comment
  POM82581  Perideridia bolanderi subsp. bolanderi Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA0092314  Perideridia bolanderi subsp. bolanderi Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31422 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  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
  SEINET11153899  Perideridia gairdneri subsp. borealis M. S. Baker July 31 (no year) s.n. Lassen Silver Lake. Comment
  CAS-BOT-BC423341  Peritoma platycarpa H. D. Ripley; R. C. Barneby 1943-6-15 5757 Lassen Nr. Viewland 1310 Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  CHSC13648  Persicaria amphibia M. S. Taylor 1974-7-10 312 Lassen Abundant in floating masses along w shore of Eagle Lake in vicinity of Grebe Nesting Area, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC6230  Persicaria amphibia J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  HSC28828  Phacelia adenophora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19305 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS25529  Phacelia adenophora Rimo Bacigalupi with Lincoln Constance 1959-6-16 7143 Lassen US Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside road) 1341 Comment
  JEPS27119  Phacelia adenophora Lauramay T. Dempster 1961-6-17 1678 Lassen about 8 mi n Karlo road junction with Hwy. 395 1584 Comment
  UC708799  Phacelia adenophora Vesta Holt 1946-6-20 4 Lassen Grasshopper Valley Comment
  UC932059  Phacelia adenophora Verne Grant and Alva Grant 1947-8-1 8225 Lassen on dike of irrigation ditch s Madeline Comment
  UCR244050  Phacelia bicolor var. bicolor Jim Andre 1993-6-1 19720 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  GMDRC6948  Phacelia hastata subsp. hastata J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31421 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
  RSA0093392  Phacelia hastata var. hastata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31421 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  JEPS2126  Phacelia humilis C. S. Robinson 1927-6-25 Lassen near Westwood Jct. (sw Lassen Co.); Lassen N. F., Norval Flat 1747 Comment
  NY1057846  Phacelia humilis N. H. Holmgren 1980-7-4 9511 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 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
  UC1069416  Phacelia humilis A. Simontacchi 1940-5-17 751 Lassen 1.1 mi ssw Dixie Spring; Lassen National Forest, Halls Flat Quadrangle 1699 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
  POM266183  Phacelia inundata J. T. Howell 1934-7-8 s.n. Lassen Spaldings Resort; Eagle Lake Comment
  UC932054  Phacelia inundata Verne Grant and Alva Grant 1947-9-5 8374 Lassen nw shore Eagle Lake Comment
  CHSC93235  Phacelia linearis John Dittes; Scott Chamberlain 2004-6-28 1009 Lassen Modoc Plateau; Long Valley; ca. 1.8 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 1.0 air-mile east of Plumas County line. 1460 Comment
  JEPS2134  Phacelia linearis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen near Chat; Honey Lake Valley Comment
  SD6842  Phacelia linearis Mrs. R. M. Austin 1879-1 Lassen Eagle Lake Comment
  POM73412  Phacelia linearis C. C. Bruce 1898-06 2190 Lassen Madeline Plains. Comment
  RSA128305  Phacelia lutea Peter H. Raven, Otto T. Solbrig 1958-6-17 13281 Lassen Along US Highway 395, 5.7 miles south of Ravendale. Comment
  NY1056456  Phacelia lutea var. glandulifera L. Constance 1938-6-11 2329 Lassen Throughout the Madeline Plains from Litchfield to Madeline 1219 Comment
  CAS-BOT-BC134047  Phacelia mutabilis John Thomas Howell 1977-6-22 52400 Lassen north end of Eagle Lake 1584 Comment
  SD58172  Phacelia mutabilis Frances Payne 1929-7-12 85 Lassen NE Warner Mts., Ridge above Lost Lake 2438 Comment
  OBI82828  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  UC1483880  Phacelia ramosissima var. eremophila G. Schoolcraft 1979-6-26 94 Lassen on dunes located off Marr Road 1706 Comment
  POM203780  Phacelia ramosissima var. eremophila J. T. Howell 1934-6-10 11873 Lassen Janesville Comment
  RSA370317  Phacelia tetramera Arnold Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10349 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
  NY1057981  Phacelia thermalis N. H. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  UC1187649  Phacelia thermalis Lincoln Constance, Elwood Molseed, John Weiler 1960-6-13 3678 Lassen 9 mi n Litchfield 1219 Comment
  JEPS88429  Phalaris arundinacea Vernon H. Oswald and Lowell Ahart 1996-8-1 8108 Lassen receding shore of the Mountain Meadows Reservoir ne of Indian Ole Dam Mountain Meadows Reservoir (sw of Westwood); , ne of Indian Ole Dam 1539 Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  UC1567400  Phleum pratense G. Schoolcraft 1989-7-18 1979 Lassen near Bucks Spring (s of Clarks Valley Road); near Buck's Spring 1874 Comment
  UC23928  Phlox austromontana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS69974  Phlox diffusa Frances D. Payne 1929-7-12 76 Lassen above Lost Lake (se extremity of Warner Mountains); Warner Mountains 2286 Comment
  UC1137642  Phlox douglasii subsp. rigida A. Simontacchi 1940-5-13 701 Lassen 4.1 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1981 Comment
  JEPS94134  Phlox gracilis Vernon H. Oswald and Lowell Ahart 1998-5-22 9100 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
  UC1124221  Phlox gracilis A. Simontacchi 1940-5-10 690 Lassen 7.3 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC773891  Phlox gracilis L. R. Short and Wm. Gansberg 1936-6-2 S- 363 Lassen Burgess Spring Experimental Range Lassen Forest 1859 Comment
  CHSC1306  Phlox speciosa subsp. occidentalis M. Anthony 1953-4-27 Lassen Susanville. 1280 Comment
  RSA715978  Phlox speciosa subsp. occidentalis L. Ahart, John Dittes 2005-6-2 11928 Lassen about 1.4 miles 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. 1499 Comment
  CHSC35953  Phlox stansburyi M. S. Taylor 1982-5-29 4572 Lassen Ca. 500 yds ne of the jct of Hwys 70 and 395 at Hallululia Jct, ca 23 mi n of Reno. Comment
  CHSC36495  Phlox stansburyi Theresa Costa 1982-6-4 31 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. 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
  UC932052  Phlox stansburyi Verne Grant and Alva Grant 1947-5-5 7979 Lassen n of Honey Lake Valley Comment
  CHSC7709  Phoenicaulis cheiranthoides Beverley J. Wise 1969-3-4 34 Lassen 1.5 mi. north of Susanville on Hwy 139. 50 feet w of rd. 1341 Comment
  UC72905  Phoenicaulis cheiranthoides Milo S. Baker 1890-1 Lassen Milford Comment
  UC769862  Phragmites australis R. F. Hoover 1940-10-11 4682 Lassen s Doyle; Long Valley Comment
  CDA19731  Phyllodoce breweri J. Chattin August 1947 s.n. Lassen Northern California; Silver Lake. 0 Comment
  HSC101734  Pinus albicaulis Michael Kauffmann, Jeffrey Kane 2013-7-23 15 Lassen North-facing caldera 2360 Comment
  CHSC23508  Pinus jeffreyi Wayne O. Baum 1971-7-16 71 -74 Lassen E. slope of Gallatin Peak. 2072 Comment
  CHSC12502  Pinus lambertiana Carol Weld 1969-6-20 13 Lassen Road between Five Corners and Dean's Meadow. 1889 Comment
  RSA518540  Pinus ponderosa George K. Helmkamp 1990-10-4 12 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  CHSC60332  Plagiobothrys cognatus Mary Ann Showers 1992-6-13 2547 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC110891  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC112443  Plagiobothrys cusickii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18772 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC93708  Plagiobothrys cusickii Lowell Ahart; John Dittes 2005-6-1 11906 Lassen Depression on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC78130  Plagiobothrys cusickii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC66237  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7861 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the interface between meadow and forest on the W side of the meadow ca. 0.4 mi S of the cabins. 1633 Comment
  JEPS109638  Plagiobothrys hispidulus Dean W. Taylor 2002-6-21 18173 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  JEPS120894  Plagiobothrys hispidulus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18776 Lassen About 30 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS121293  Plagiobothrys hispidulus Lowell Ahart 2013-7-22 18854 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC224970  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  CHSC59082  Plagiobothrys hispidus Vernon H. Oswald; Lowell Ahart 1992-8-25 5193 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. 1851 Comment
  UC100839  Plagiobothrys hispidus Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UC1618198  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy. 44 ca. 1 mi. e. Shasta Co. line (s. of hwy.) 1645 Comment
  UC25081  Plagiobothrys hispidus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  RSA517278  Plagiobothrys hispidus Barbara Ertter, Gary Schoolcraft 1987-6-16 7190 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  UC1560401  Plagiobothrys mollis E. Joyal and D. Mehlman 1988-6-27 1286 Lassen Poison Lake 2000 Comment
  SBBG19323  Plagiobothrys torreyi C. B. Hardham 1961-6-17 7509 Lassen Baxter Crk, S of Susanville 1676 Comment
  UC845587  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen about 1 mi e Westwood 1524 Comment
  UC1951081  Plectritis congesta subsp. brachystemon Debra Valov 2009-4-24 2009010 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC29955  Plectritis macrocera Robin L. Ondricek 1978-5-25 24 Lassen Eagle Lake Field Station. 1554 Comment
  CHSC99738  Plectritis macrocera Lowell Ahart; John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  HSC63959  Plectritis macrocera Teresa Prendusi 1980-5-19 Lassen Saddle Rock. 1524 Comment
  SEINET10550970  Plectritis macrocera Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3116 Lassen 6 miles 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-BC326715  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade south of and paralleling Highway 70 just southeast of Beckwourth Pass on Plumas-Lassen county line 1584 Comment
  HSC68933  Pleuricospora fimbriolata Gary Schoolcraft 1980-7-29 341 Lassen On Big Valley Mountain timber sale area, W of Bieber, CA. 1829 Comment
  UCD92181  Poa J. B. Davy 17-24 Jun 1897 3319 Lassen Honey Lake Valley. Byer's Ranch. Comment
  CAS-BOT-BC255679  Poa bolanderi Clare B. Hardham 1971-8-22 18912 Lassen Diamond Mountain 2133 Comment
  JEPS114748  Poa bulbosa Lowell Ahart, John Dittes 2008-6-22 15035 Lassen About 220 yards west of the road levee, on the banks of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  UC1100399  Poa bulbosa Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 758 Lassen on Great Northern RR, Hwy 299 <Nubeiber> Comment
  UC1924563  Poa bulbosa Debra Valov 2006-5-30 2006035 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UCD90891  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen northeastern part of county. Long Valley, 6 miles southeast of Jess Valley, southern Warner Mountains. 2133 Comment
  CAS-BOT-BC247320  Poa pratensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 -A Lassen 13.5 mi. E. of Susanville Comment
  RSA152756  Poa pratensis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16337 -A Lassen 13.5 mi E. of Susanville Comment
  SEINET10523388  Poa pratensis Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3113 Lassen 6 mi N of Hallelujah Jct. on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CHSC106673  Poa secunda B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  JEPS127715  Poa secunda Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -170 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  RSA101643  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  RSA300158  Poa secunda J. T. Howell, Gordon H. True, Margaret J. Williams 1973-5-12 s.n. Lassen Elysian Valley northwest of Janesville 1326 Comment
  SEINET175674 Image available Poa secunda Marcus E. Jones 1897-6-19 Lassen Chat, California 1524 Comment
  UC1951068  Poa secunda Debra Valov 2009-4-26 2009024 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CAS-BOT-BC237715  Poa secunda subsp. juncifolia J. B. Davy 1897-6-1 3319 Lassen Honey Lake Valley Comment
  CAS-BOT-BC247051  Poa secunda subsp. juncifolia John Thomas Howell 1973-7-10 49777 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC247054  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UC188907  Poa secunda subsp. juncifolia Milo S. Baker Lassen Dixie Valley Comment
  UC39629  Poa secunda subsp. juncifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3316 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
  CAS-BOT-BC236180  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49197 Lassen Elysian Valley NW of Janesville 1325 Comment
  UC1024818  Poa secunda subsp. secunda Leo Whitney 1935-6-19 3261 a Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC790959  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2794 Lassen 10 mi w Chester (Rte 36) Comment
  SEINET10443291  Poa secunda var. secunda M. Church 2016-6-10 3 Lassen E of Hwy 395, N of Hallelujah Junction. 1442 Comment
  UC1024807  Poa wheeleri Leo Whitney 1935-6-23 3286 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1024809  Poa wheeleri Leo Whitney 1935-6-16 3273 Lassen ca 15 mi w Eagle Lake (Crater Lake); Lassen Nat'l Forest 2133 Comment
  UC1136985  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experimental Range; Lassen Forest 1767 Comment
  UC1609361  Pogogyne floribunda Vernon H. Oswald and Lowell Ahart 1993-7-8 5669 Lassen ca. 5.4 mi. (air) n.w. Poison Lake (Halls Flat Rd. (33N18), 1.4 mi. s.-s.w. of Pittville Rd. (Lassen 111, 36N01), w. side of rd.) 1694 Comment
  CHSC7768  Polemonium micranthum Beverly J. Wise 1969-4-20 92 Lassen 13.2 mi. East of Susanville on Las. Co. Rd. 215. 1463 Comment
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  UC23986  Polemonium occidentale subsp. occidentale M. S. Baker and Frank Nutting 1894-7-31 Lassen Bridge Creek Comment
  JEPS13801  Polyctenium fremontii Dr. Loughridge 1912-1 Lassen Madeline Plains 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
  UC188175  Polyctenium fremontii J. G. Lemmon Lassen Eagle Lake and Madeline Plains Comment
  CDA20360  Polyctenium fremontii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; No other data provided. 0 Comment
  SEINET258241 Image available Polyctenium fremontii var. confertum Arnold Tiehm, Jan Nachlinger, Margaret Williams 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on Hwy. 295 from Susanville to Alturas. T30N R15E Sec 15 1350 Comment
  CAS-BOT-BC167849  Polygala subspinosa Junea Kelly 1937-6-1 s.n. Lassen South of Secret Valley on road from Susanville to Alturas Comment
  CHSC117618  Polygala subspinosa L. P. Janeway and B. Castro 2015-6-5 11765 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  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
  CHSC4777  Polygonum R. Carter 1967-6-27 556 Lassen Ca. 100 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  JEPS114703  Polygonum arenastrum Lowell Ahart, John Dittes 2008-6-20 14931 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
  CHSC76287  Polygonum aviculare Lowell Ahart; Vernon H. Oswald 1999-9-13 8225 Lassen Along a small slough, on the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC99299  Polygonum aviculare Lowell Ahart; John Dittes 2008-6-20 14931 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
  JEPS83272  Polygonum aviculare J. D. Jokerst 1983-7-24 1877 Lassen nw Ravendale; Madeline Plains 1615 Comment
  RSA518872  Polygonum davisiae Barbara J. Ertter 1988-7-25 7863 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  POM104508  Polygonum douglasii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC60762  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  UC1136192  Polygonum douglasii subsp. spergulariiforme A. Simontacchi 1940-7-8 925 Lassen 5.1 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1178952  Polygonum douglasii subsp. spergulariiforme Herbert L. Mason Jul 29 1955-Jul 31 1955 14645 Lassen near Westwood Junction ((railroad station 15 mi w of Susanville), s Lassen Co.) Comment
  UC1924203  Polygonum lapathifolium Debra Valov 2005-8-20 2005221 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC1603214  Polygonum polygaloides J. Guardino 1993-6-9 281 A Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CHSC58850  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 a 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
  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
  CHSC6231  Polygonum polygaloides subsp. kelloggii R. Gein 1946-6-12 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  CDA22787  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. Comment
  HSC97193  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy. 36, 1/4 mi. SW of the Susan River, 8 air mi. SW of Susanville 1434 Comment
  SBBG119830  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy 36, ca. 0.25 air mi SW of the Susan River, ca. 8 air mi SW of Susanville 1433 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
  SEINET10885945  Populus tremuloides Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 141 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 Comment
  CHSC13649  Porterella carnosula M. S. Taylor 1974-7-13 308 Lassen Abundant along edge of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi ne of Susanville. 1524 Comment
  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
  JEPS28708  Porterella carnosula George W. Gillett 1957-7-29 938 Lassen near w end Widow Lake (Widow Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Widow Lake 2072 Comment
  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
  HSC63956  Porterella carnosula Teresa Prendusi 1980-7-1 Lassen Champs Flat, ca. 8 mi. W of N end of Eagle Lake. 1677 Comment
  SEINET10460820  Porterella carnosula Taylor 1988-6-6 Taylor 9007 Lassen Road from Bieber to Lookout, 0.5 miles south of the Modoc County Line 1250 Comment
  SEINET10460826  Porterella carnosula Gary Schoolcraft 1980-7-16 Schoolcraft 318 Lassen T38N R12ESE 1/4 Sec 23 Comment
  SEINET10460829  Porterella carnosula Howell 1934-7-7 Howell 12466 Lassen Near Feather Lake Comment
  JEPS103225  Potamogeton alpinus subsp. tenuifolius G. Schoolcraft 1996-9-11 2564 Lassen Willow Creek below petroglyphs and above dam 1432 Comment
  CHSC4840  Potamogeton filiformis R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UC1099866  Potamogeton foliosus Verne Grant, Irving Schneider 1947-7-29 8181 Lassen 1 mi e (upstream) of Tule Lake; Cedar Creek Comment
  UCD149958  Potamogeton foliosus William Anderson 1963-5-12 s.n. Lassen High Rock. Comment
  CHSC66284  Potamogeton gramineus Vernon H. Oswald; Lowell Ahart 1996-6-24 7876 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  SEINET10704662  Potamogeton natans Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 146 Lassen Lassen National Forest. 1.3 mi. on Road 10 to Silver Lake off Road 110. 1963 Comment
  UC1100077  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-30 8196 Lassen w end of Tule Lake Comment
  UC1100078  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-29 8184 Lassen e end of Tule Lake Comment
  RSA323730  Potamogeton pusillus A. Tiehm, Gary Schoolcraft 1984-8-14 9247 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  UC1713222  Potamogeton pusillus subsp. pusillus Herbert L. Mason and Verne Grant 1947-7-9 13292 Lassen 5 miles east of Bieber Comment
  RSA327306  Potamogeton richardsonii A. Tiehm, Gary Schoolcraft 1984-8-14 9242 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  UC60849  Potamogeton striatus J. B. Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Comment
  CHSC65370  Potamogeton zosteriformis Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7220 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  JEPS97316  Potamogeton zosteriformis Vernon H. Oswald 1995-8-26 7220 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UC1191488  Potentilla biennis Verne Grant, Irving Schneider 1947-7-30 8189 Lassen s point of w embayment Tule Lake Comment
  CHSC60395  Potentilla flabellifolia Mary Ann Showers 1992-6-13 2553 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  UC12523  Potentilla fruticosa M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  CAS-BOT-BC141633  Potentilla gracilis var. elmeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49452 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  CHSC6256  Potentilla gracilis var. fastigiata V. Holt 1946-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  SEINET10540584  Potentilla klamathensis Katherine L. Morris 1973-5-25 Morris 253 Lassen 27.7 miles nw of the junction of hwy 36 and 44 on hwy 44, at robber's spring, In an open meadow on one side of the hwy with yellow pine, white fir and open On the other side Comment
  CHSC4889  Potentilla millefolia L. G. Bennett 1967-7-17 166 Lassen 0.3 mi n of junction of Silver Lake Road and Hwy 44, on Hwy 44. 1975 Comment
  CHSC5003  Potentilla millefolia K. C. Newman 1967-7-14 87 Lassen Collected in meadow along SH 44 about 15 mi. from the junction of SH 36 going toward Redding. 1828 Comment
  HSC25729  Potentilla millefolia D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19183 Lassen Harvey Valley near Cone Springs Comment
  UCD113955  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake. Comment
  CHSC117197  Poterium sanguisorba Lowell Ahart; John Dittes 2016-6-7 20998 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC30570  Prunella vulgaris Sori H. Shad 1970-6-24 31 Lassen Collected in upper Murrer's Meadow. 1524 Comment
  HSC101096  Prunus andersonii C. Dow, D. Garrison 2008-5-3 Lassen OHV Trailhead and Trail to Indian Springs 1439 Comment
  UC1128289  Prunus andersonii E. Sawyer 1935-6-27 227 Lassen Long Valley 1310 Comment
  RSA0028244  Prunus andersonii John F. Emmel 1994-7-18 1335 Lassen Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle. 1305 Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  SEINET10483438  Prunus andersonii Mary Susan Taylor 1982-5-7 Taylor 4424 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-BC383104  Prunus virginiana var. demissa Andrew Townesmith; Karen M. Meyer 2007-7-20 835 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
  CHSC7721  Prunus virginiana var. demissa Beverley J. Wise 1969-5-18 192 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On canyon wall. 1554 Comment
  JEPS107870  Prunus virginiana var. demissa Lowell Ahart, John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  RSA123193  Prunus virginiana var. demissa L. R. Short, Wm Gansberg 1936-7-3 S- 466 Lassen MDM. Burgess Spr. Exp. Range. 1848 Comment
  CAS-BOT-BC357283  Pseudognaphalium microcephalum John Thomas Howell; Gordon H. True 1973-8-1 50155 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC239800  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51997 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD91514  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51999 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  CHSC29919  Pseudostellaria jamesiana Robin Ondricek 1978-6-27 73 Lassen On Coleman Lake Rd., 1977 burn area. 1950 Comment
  CHSC68858  Pseudostellaria jamesiana Vernon Oswald; Lowell Ahart 1997-6-24 8619 Lassen South of Susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43, ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. 2036 Comment
  CAS-BOT-BC174802  Pseudostellaria jamesiana Mrs. H. C. Cantelow 1949-6-11 7 Lassen Summit of Fredonyer Pass Comment
  SEINET10801640  Psilocarphus brevissimus Katherine L. Morris, David B. Dunn; Douglas G. LeDoux 1973-5-25 Morris 249 Lassen 27.7 mi. NW of the junction of Hwy. 36 & 44 on Hwy. 44, at Robber's Spring, in an open meadow on one side of the highway with yellow pine, white fir and open on the other side. Comment
  CHSC64868  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6897 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  JEPS30616  Psilocarphus brevissimus var. brevissimus Peter H. Raven with Otto T. Solbrig 1958-6-17 13284 Lassen along United States Highway 395 1.9 me s Ravendale Comment
  JEPS97412  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald and L. Ahart 1995-6-19 6897 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
  UC1924584  Psilocarphus brevissimus var. brevissimus Debra Valov 2006-5-28 2006014 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  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
  NY702516  Psoralidium lanceolatum G. Schoolcraft 1991-6-12 2159 Lassen On Sierra Army Depot north of Herlong 1234 Comment
  NY702519  Psoralidium lanceolatum J. T. Howell 1934-6-10 11860 Lassen Doyle Comment
  CAS-BOT-BC460510  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile E of Westwood 1524 Comment
  CAS-BOT-BC239823  Puccinellia lemmonii G. Schoolcraft 1986-6-2 1601 Lassen About 1 mile west of NV stateline 1341 Comment
  JEPS103194  Puccinellia lemmonii G. Schoolcraft 2000-6-19 2906 Lassen Flat SE of Ravendale BLM Fire Station 1645 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
  UCD149767  Puccinellia lemmonii William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CHSC25129  Purshia tridentata Paul Lyman 1970-5-2 29 Lassen Bald Mountain; Janesville. On south slope of Bald Mountain, 10 miles East of Susanville. Comment
  CHSC105257  Purshia tridentata var. tridentata Lowell Ahart; John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  HSC19580  Purshia tridentata var. tridentata Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  HSC19581  Purshia tridentata var. tridentata L. H. Myers 1963-4-5 29 Lassen W of Hwy. 395 near Janesville 1280 Comment
  HSC19587  Purshia tridentata var. tridentata J. J. Wagoner 1965-5-1 50 Lassen 22 mi. N of Susanville on Hwy. 395 Comment
  RSA122151  Purshia tridentata var. tridentata K. e. Bradshaw 1939-5-27 234 Lassen S end of Black Mtn E.F. Plot 39-1. Lassen Forest. 1753 Comment
  UC467830  Purshia tridentata var. tridentata Franklin P. Nutting Lassen Pine Creek Comment
  UC764040  Purshia tridentata var. tridentata R. F. Hoover 1940-9-21 4605 Lassen 4 mi w Susanville Comment
  CAS-BOT-BC462754  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CHSC6237  Pyrola picta P. Balch 1955-7-22 Lassen Between Eagle Lake and Pittville road. 1676 Comment
  RSA0084313  Pyrola picta Diana D. Jolles, Erik M. Beaston 2011-7-5 442 Lassen Lassen National Forest near area where Susan River flows through Clover Valley. Thinning unit near intersection of A-21 road and Silver Lake Road some miles south of Highway 44. 1784 Comment
  POM39972  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1143034  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1783 Comment
  UC35838  Pyrrocoma hirta var. lanulosa M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS100334  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17839 Lassen meadow along jeep road southward from Doyle Grade and 1 air mile South therefrom, just E of Plumas County line, Plumas National Forest 2042 Comment
  CAS-BOT-BC362319  Pyrrocoma racemosa var. paniculata John Thomas Howell 1951-8-20 28227 Lassen Honey Lake Valley near Herlong 1280 Comment
  JEPS41362  Quercus garryana James Griffin 1964-8-4 1272 Lassen along county road from Little Valley to Dixie Valley 1341 Comment
  JEPS107803  Quercus kelloggii Lowell Ahart, John Dittes 2005-6-2 11942 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
  UCD46633  Quercus kelloggii John Thomas Howell; Gordon H. True 1973-5-12 49159 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  JEPS28456  Ranunculus alismifolius var. alismellus George W. Gillett 1957-6-21 869 Lassen meadow 300 yd n Juniper Lake-Cameron Meadow trail summit; Lassen Volcanic National Park 2118 Comment
  UC773871  Ranunculus alismifolius var. alismifolius L. R. Short 1936-4-28 S- 339 Lassen Harvey Valley Lassen <National> Forest 1706 Comment
  CHSC27739  Ranunculus alismifolius var. hartwegii J. D. Prouty 1978-7-5 17 Lassen NE shore of Mahogany L., S of Eagle L. Meadow around lake. 2060 Comment
  POM172668  Ranunculus aquatilis var. capillaceus Franklin Nutting 1894-7-25 s.n. Lassen Eagle Lake Comment
  NY652209  Ranunculus aquatilis var. capillaceus G. Schoolcraft 1996-9-11 2561 Lassen Willow Creek near Belfast 1432.6 Comment
  SEINET10536066  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1974-1 Taylor 282 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC117213  Ranunculus arvensis Lowell Ahart; John Dittes 2016-6-7 21003 Lassen Near Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  RSA152629  Ranunculus cymbalaria var. saximontanus I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16345 Lassen N of road 13.5 miles E of Susanville Comment
  UC1136880  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spr. Exp. Range Lassen National Forest 1737 Comment
  UC69597  Ranunculus occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3379 Lassen Honey Lake Valley Comment
  RSA74352  Ranunculus occidentalis var. ultramontanus Milo S. Baker 1952-5-23 12409 Lassen Along Hwy 36, betw Pluster and Fredownyer Pass. Comment
  CHSC7731  Ranunculus orthorhynchus Beverley J. Wise 1969-4-28 88 Lassen 9 mi. east of Susanville on south side of Las. Co. Rd. 215. Meadow. 1371 Comment
  UC1587083  Ranunculus sceleratus G. Schoolcraft 1991-6-27 2174 Lassen 3 mi e Susanville (n of Johnstonville Rd, along ditch) 1280 Comment
  UCD97105  Ranunculus sceleratus Malcolm A. Knobs; S. Galen Smith 1949-7-21 1050 Lassen ca. 1 mile east of Madeline. Comment
  NY494904  Ranunculus sceleratus var. multifidus G. Schoolcraft 1991-6-27 2174 Lassen North of Johnstnville Road, 3 miles east of Susanville 1280.2 Comment
  SEINET5338927  Ranunculus uncinatus var. uncinatus M. J. Williams 1984-6-16 84- 32 -1 Lassen Road from Doyle to Frenchman's Reservoir, 0.9 miles towards Frenchman's, 8.6 miles from Doyle. Comment
  CHSC44887  Ratibida columnifera Lowell Ahart; John Thomas Howell 1974-7-9 513 Lassen Near the south-west side of Eagle Lake. 1584 Comment
  JEPS82976  Ratibida columnifera G. D. Barbe 1974-8-20 1939 Lassen in dry gravelly cleared area at n end Glenn-Eagle airstrip (sw corner of lake, 0.8 mi n of Eagle Lake Resort); Eagle Lake 1554 Comment
  CAS-BOT-BC362886  Ratibida columnifera John Thomas Howell 1974-7-9 50486 Lassen SW. of Wildcat Point, Eagle Lake 1554 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
  CAS-BOT-BC58195  Rhododendron columbianum Ben Howard; C. R. Quick 1949-9-14 49 -48 Lassen Jennie Spring, Jennie Mt., N. of Westwood, Lassen National Forest. Comment
  CHSC7759  Ribes aureum Beverley J. Wise 1969-5-4 101 Lassen 0.5 mi. south on Las. Co. Rd. 305 off junction of Hwy 395. 1249 Comment
  SEINET10482925  Ribes cereum Mary Susan Taylor 1974-5-4 Taylor 219 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
  CHSC60742  Ribes cereum var. cereum Vernon H. Oswald; Lowell Ahart 1993-6-3 5487 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville. 1688 Comment
  CHSC84861  Ribes cereum var. cereum L. P. Janeway; B. Castro 2003-10-5 8003 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  JEPS94487 Image available Ribes cereum var. cereum Vernon H. Oswald and Lowell Ahart 1997-5-27 8515 Lassen 2.6 mi ne of Highway 139 (Williams Reservoir on Forest Route 38N04, between Highway 139 near Willow Creek Guard Station and Coyote Flat); Williams Reservoir on Forest Route 38N04 1682 Comment
  CAS-BOT-BC169008  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  CDA25586  Ribes velutinum J. R. Keck Jr. 1977-8-1 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  CHSC106588  Ribes velutinum C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  UC1136911  Ribes velutinum L. R. Short and Wm. Gansberg 1936-7-9 S- 481 Lassen MDM, Burgess Spr. Exp. Range Lassen Forest 1783 Comment
  SEINET10482959  Ribes velutinum Mary Susan Taylor 1974-1 Taylor 288 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC173959  Ribes viscosissimum John Thomas Howell; Gordon H. True 1973-8-1 50247 Lassen Gold Run Creek road south of Susanville. Diamond Range 1950 Comment
  CAS-BOT-BC363009  Rigiopappus leptocladus G. Schoolcraft 1989-6-7 1905 Lassen Lower NE slope of Shaffer Mtn. Comment
  CAS-BOT-BC363010  Rigiopappus leptocladus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49205 Lassen Elysian Valley northwest of Janesville 1325 Comment
  SD131593  Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen south side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from susanville to Alturas west of the highway 1385 Comment
  SEINET2054605 Image available Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen South side of Shaffer Mt., 3.4 road miles North of the Wendel road on highway 395 from Susanville to Alturas, west of highway. 1386 Comment
  JEPS34911  Rigiopappus leptocladus L. S. Smith 1920-6-15 Lassen McKenzie spring Bieber Range, McKenzie spring 1310 Comment
  RSA431533  Rorippa curvisiliqua Rockwell s.n. Lassen Eagle Lake. Comment
  JEPS121254  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-7-22 18855 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC13796  Rorippa nasturtium-aquaticum Cathy Crittenden 1970-7-8 31 Lassen Lower Murrer's Meadow; by Willow Creek. 1463 Comment
  NY758403  Rorippa sinuata N. H. Holmgren 1980-7-3 9478 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. Highway 395, 16 km (10 mi) air distance northwest of Termo 1620 Comment
  UCR17283  Rosa californica Frank C. Vasek 1975-7-11 750711- 22 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  HSC81474  Rosa woodsii subsp. ultramontana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6019 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  SEINET10540474  Rosa woodsii subsp. ultramontana Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 890 Lassen Collected 3 mi. N of Milford, CA on Hwy. 395 at Honey Lake campgrounds. Comment
  JEPS45635  Rosa woodsii var. ultramontana W. L. Jepson 1918-8-2 7782 Lassen 1 mi below Boni Ranch (lower bench of creek); Long Valley Creek 1371 Comment
  SD61071  Rosa woodsii var. ultramontana Darley F. Howe none given Lassen Hillside of Parsnip Creek, Modoc National Forest 1829 Comment
  CHSC66728  Rotala ramosior Vernon H. Oswald; Lowell Ahart 1996-8-1 8105 Lassen Mountain Meadows Reservoir SW of Westwood. Growing on the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  CHSC60401  Rubus parviflorus Mary Ann Showers 1992-6-13 2556 Lassen Lassen Volcanic National Park. Southwest of Widow lake. 2072 Comment
  CAS-BOT-BC421955  Rumex acetosella Margaret Williams; Steven Williams 1974-7-26 74 -L-23 Lassen Near Hellelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC117299  Rumex crispus Lowell Ahart; John Dittes 2016-7-13 21134 Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1037331  Rumex paucifolius Leo Whitney 1934-7-3 1954 Lassen 14 mi w Eagle Lake (Bogard Ranger Station); Lassen National Forest 1737 Comment
  UC6958  Rumex paucifolius Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  UC1036083  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5152 Lassen 4 to 6 mi s Madeline Comment
  SDSU9722  Rumex salicifolius var. lacustris D. F. Howe 1966-8-25 Lassen 41.0 Miles s of Alturas on #3954.2 miles N of juction with #12, on #1. 1676 Comment
  UC452556  Rumex salicifolius var. salicifolius Milo S. Baker Lassen n side Dixie Mt. Comment
  UC452568  Rumex salicifolius var. salicifolius Franklin P. Nutting Lassen n side Dixie Mts. Comment
  CHSC99509  Rumex salicifolius var. triangulivalvis Lowell Ahart; John Dittes 2008-6-20 14930 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1776705  Rumex venosus G. Schoolcraft 1993-6-1 2267 Lassen Along Hwy 395 about 1.5 mi. n. of turnoff to Wendel 1280 Comment
  SEINET4176577  Rumex venosus M. J. Williams 1969-5-24 s.n. Lassen Near Doyle 1524 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
  UC803885  Sagittaria cuneata G. L. Stebbins Jr. 1949-8-6 4004 Lassen edge Feather Lake (betw. Susanville and McArthur); edge of Feather Lake 1676 Comment
  CAS-BOT-BC445673  Sagittaria cuneata George W. Gillett 1957-7-28 918 Lassen Lassen Volcanic National Park. Butte Lake 1844 Comment
  HSC2897  Sagittaria cuneata R. G. Means 1962-7-4 70 Lassen 19.5 mi. N of Susanville, Hwy. 139 1524 Comment
  RSA0011560  Sagittaria cuneata Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46992 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CHSC61243  Sagittaria latifolia P. V. Caldwell 1972-6-23 246 Lassen Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow. Comment
  CAS-BOT-BC108056  Salix exigua P. Monnet 1919-7-1 823 Lassen Hot Springs Peak 91 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
  SEINET3260826  Salix exigua Marcus E. Jones 1897-6-25 Lassen Susanville. 1340 Comment
  SEINET3260830  Salix exigua Marcus E. Jones 1897-6-28 Lassen Susanville. 1340 Comment
  UC1134871  Salix exigua C. W. Hanks 1934-9-28 97 Lassen Long Valley s of Honey Lake (near Plumas Nat'l Forest); Sierraville Quadrangle Comment
  NY187518  Salix hindsiana N. F. Bracelin 1931-6-29 485 Lassen McArthur 960 Comment
  CAS-BOT-BC128173  Salix lasiandra var. lasiandra Hans Leschke 1960-8-8 1736 Lassen Below trail ski hut, Crumbaugh Lake 1981 Comment
  CAS-BOT-BC124636  Salix lemmonii Hans Leschke 1960-8-5 1700 Lassen Feather Lake 1996 Comment
  CAS-BOT-BC124637  Salix lemmonii M. B. Kildale 1926-9-11 2788 Lassen Susanville 1524 Comment
  CHSC13668  Salix lemmonii E. L. Smith 1971-4-28 946 A Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  POM209470  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 685 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  UC1776696  Salix lemmonii G. Schoolcraft 1994-8-3 2425 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  UC433175  Salix lemmonii Franklin P. Nutting 1900-7-28 Lassen Bridge Creek Comment
  RSA715977  Salix lucida subsp. lasiandra L. Ahart, John Dittes 2005-6-2 11925 Lassen Along a small ditch. Along the road. Near the Anderson Ranch home. Long Valey. About 4.75 miles (air) N of the intersection of Scott Rd and Hwy 70. 6.2 miles (air) NW of Hallelujah Jct. 1460 Comment
  POM107066  Salix melanopsis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  HSC95283  Salix petrophila Gordon Leppig 1998-7-12 938 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  CDA36352  Salsola gobicola B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  CDA34340  Salvia aethiopis Anonymous 1987-6-18 Lassen New Pine Creek, along Hwy 395 north into Oregon. 0 Comment
  HSC31743  Salvia dorrii Donald Spalinger 1974-5-16 67 Lassen Near Hwy. leading from Wendel to Flanigan 1280 Comment
  SEINET201595  Salvia dorrii var. dorrii Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8462 Lassen 50 miles southeast of Susanville. Comment
  UC585164  Salvia dorrii var. dorrii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1739 Lassen mountain above Red Rock 1432 Comment
  CAS-BOT-BC214310  Salvia dorrii var. pilosa H. D. Ripley; R. C. Barneby 1944-5-30 5966 Lassen Secret Valley 1524 Comment
  SEINET10880384  Sambucus caerulea Andrew Townesmith 2012-9-4 Townesmith 2398 Lassen Along California route 44, at milepost 34, ca. 2 miles west of intersection with California route 36. 1671 Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC110335  Sarcobatus vermiculatus John Thomas Howell 1975-7-23 51414 Lassen Sierra Nevada. On Highway 395 about 5 miles southeast of Doyle. 1310 Comment
  CHSC13628  Sarcobatus vermiculatus M. S. Taylor 1974-7-8 261 Lassen Abundant on e side of Rt A3, ca. 1 mi n of Honey Lake, ca. 1 mi s of Standish, Honey Lake Wildlife Refuge. Comment
  JEPS59876  Sarcobatus vermiculatus W. L. Jepson 1918-8-4 7805 Lassen Horse Lake 1554 Comment
  UC7509  Sarcobatus vermiculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3328 Lassen Honey Lake Valley 1219 Comment
  CAS-BOT-BC283086  Schedonorus arundinaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49474 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC283087  Schedonorus arundinaceus Margaret Williams; Louella Bass 1972-10-22 EV 3 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 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
  RSA0009705  Schoenoplectus acutus var. occidentalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS78082  Scirpus acutus var. occidentalis Gary W. Zamzow 1972-7-18 88 Lassen beside Highway 395 16.8 mi s of the intersection with Highway 36; beside Highway 395 1280 Comment
  JEPS88199  Scribneria bolanderi Vernon H. Oswald and Lowell Ahart 1996-6-17 7804 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side of trail between Devils Corral Trailhead and the 6.0 mi. post); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  CHSC7755  Scrophularia californica Beverley J. Wise 1969-5-18 110 Lassen 18.2 mi. N. E. of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. North sidewall of Willow Creek Canyon. 1463 Comment
  JEPS84931  Scrophularia desertorum Barbara Ertter with Gary Schoolcraft 1987-6-16 7191 Lassen ne side Honey lake (s side of Hot Springs VABM); Skeedaddle Mts 2286 Comment
  JEPS29096  Scrophularia lanceolata Lauramay T. Dempster 1961-6-17 1674 Lassen ca 4 mi n of Karlo Rd junction with Hwy 395 1432 Comment
  SDSU11023  Scrophularia lanceolata D. F. Howe 1962-8-2 3923 Lassen Warner Mtns, Modoc National Forest. 1829 Comment
  JEPS62885  Scutellaria nana L. S. Smith C. 1918 Lassen Bieber Range, nw Lassen County Bieber Range 1371 Comment
  RSA123264  Scutellaria nana L. R. Short, J. Warren 1935-6-23 S- 445 Lassen Lassen Forest, MDM, Burgess Spr. Exp. Range. 1809 Comment
  RSA128297  Scutellaria nana Peter H. Raven, Otto T. Solbrig 1958-6-17 13270 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  RSA719468  Scutellaria nana L. P. Janeway 2005-4-7 84614 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 534 Comment
  UC100824  Scutellaria nana Milo S. Baker 1894-7-13 Lassen Pine Creek Comment
  CAS-BOT-BC240085  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak Comment
  CDA2409  Secale cereale T. C. Fuller 1969-5-22 18481 Lassen Northeast corner of Rair Drive & Main Street, Susanville. 0 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
  RSA152627  Secale cereale I. L. Wiggins, Dorothy Wiggins 1961-6-11 16342 Lassen On hillside 13.5 mi. of Susanville Comment
  SEINET10517203  Secale cereale Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 887 Lassen Collected 3 mi N of Milford. On Hwy 395 at Honey Lake Campgrounds. Comment
  CAS-BOT-BC363324  Senecio aronicoides Alice Eastwood 1912-8-22 1819 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  RSA712935  Senecio aronicoides L. P. Janeway 2005-7-4 8471 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC831880  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen w of Fredonyer Pass (on Highway 36) 1676 Comment
  CHSC106074  Senecio canus Lowell Ahart; John Dittes 2010-7-31 16990 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CDA38660  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 PDR# 1535022 Lassen South of Adin; Hwy. 139 at Milepost 58. 0 Comment
  JEPS109870  Senecio hydrophiloides Dean W. Taylor 2007-6-14 20129 Lassen between Gordon Lake and Bullard Lake, along Forest Road 31N31 0.3 miles NE of junction with Forest Road 34N25 (this the junction at the northwest end of Gordon Lake) 1828 Comment
  OBI76980  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen Natl Forest. Southern McCoy Flat. Spalding Tract quad T33N R10E sec 32 SE of SW 1700 Comment
  CHSC7651  Senecio hydrophilus Beverley J. Wise 1969-5-9 28 Lassen 10.3 mi. east of Susanville on Forest Serv. 8246 off Hwy 36. 1554 Comment
  UC1142925  Senecio hydrophilus A. L. Hormay 1941-6-23 12 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 Comment
  CHSC30613  Senecio integerrimus L. Maslin 1975-7-1 10 Lassen At the foothill of n Black Mtn. near Eagle Lake Field Station. 1981 Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  SEINET10908456  Senecio integerrimus Paul Gallian, David B. Dunn 1971-6-2 Gallian 473 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. Comment
  UCD135546  Senecio integerrimus Grady L. Webster 1989-5-13 7702 Lassen Butterfly Valley area. Aound 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  CHSC23517  Senecio integerrimus var. exaltatus Wayne O. Baum 1971-6-28 71 -18 Lassen E. slope of Gallatin Peak. 1920 Comment
  RSA0124942  Senecio integerrimus var. exaltatus Philip A. Munz 1947-5-18 11861 Lassen Fredonyer Forest Public Camp Ground, west of Susanville. 1509 Comment
  SJSU13986  Senecio integerrimus var. exaltatus N. A. Hopkins 1988-5-16 1399 Lassen by Scott Valley Rd W of Long Valley Cr 4 mi N of Hwy 70 1524 Comment
  CDA8673  Senecio pseudaureus var. pseudaureus Gordon Leppig 1998-7-12 948 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  SFV10993  Senecio serra J. Turner, F. M. Ball (1192) 1962-7-13 s. n. Lassen Laufman Public Camp, 3 miles off Highway 395 from Milford near Honey Lake. 1494 Comment
  CAS-BOT-BC364254  Senecio triangularis Clare B. Hardham 1971-8-22 18409 Lassen Diamond Mountain. Aspen Swamp, North slope Comment
  CAS-BOT-BC216251  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen On the south slope of the Rush Creek drainage, 0.3 km. south of the Smoke Creek Ranch Road, 2 km. west of teh stateline Comment
  CDA36706  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen Along a bench on the south slope of the Rush Creek Drainage, 0.3 km south of the Smoke Creek Ranch Road, 2 km west of the stateline. 0 Comment
  CAS-BOT-BC213324  Sidalcea G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  JEPS117494  Sidalcea glaucescens Lowell Ahart, John Dittes 2010-7-31 17016 Lassen On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  CAS-BOT-BC205765  Sidalcea oregana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  SEINET11986397  Sidalcea oregana N. E. Heiken 1978-1 86 Lassen Colman Lake, several mi S of Eagle Lake 1963 Comment
  POM230480  Sidalcea oregana subsp. oregana D. D. Keck, Jens Clausen 1935-6-24 3740 Lassen 2 miles S. of Ravendale, Comment
  CHSC66729  Sidalcea oregana subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-8-1 8114 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  NY54618  Sidalcea oregana var. maxima N. H. Holmgren 1980-7-3 9479 Lassen Madeline Plains, Westside Road, 9 km (5.6 mi) west of U.S. highway 395, 16 km (10 mi) airline distance northwest of Termo 1620 Comment
  SEINET246897  Sidalcea oregana var. maxima Unknown 1988-6-2 11704 Lassen East side of Snowshoe Mt., 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway. 1402 Comment
  OBI75863  Silene douglasii Anthony Baniaga 2011-9-1 510 Lassen Lassen Natl Forest. W of Bailey Crk, along F.S. 10 Red Cinder quad. T29N R7E sec 3 SE of NE 1896 Comment
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  SD61034  Silene menziesii Darley F. Howe 1964-8-1 3908 Lassen Parsnip Creek, Warner Mountains, Modoc National Forest. 1830 Comment
  CAS-BOT-BC389553  Silene nuda Louella Bass 1973-6-15 107 Lassen Elysian Valley 1325 Comment
  CHSC83192  Silene nuda Raymond D. Ratliff 1965-8-4 41 Lassen Lassen National Forest, Harvey Valley Allotment (HV 25-19). Meadow. 1700 Comment
  CAS-BOT-BC389543  Silene nuda H. D. Ripley; R. C. Barneby 1943-6-13 5686 Lassen Milford 1264 Comment
  UC8482  Silene occidentalis subsp. occidentalis Milo S. Baker 1896-7-30 Lassen Silver Lake Comment
Read comments
Sep 9 2015
  CDA18271  Silene verecunda subsp. andersonii G. D. Barbe 1974-8-2 1936 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS107467  Sisymbrium altissimum Lowell 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 1448 Comment
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  SBBG128753  Sisyrinchium bellum L. Ahart, J. Dittes 2008-6-20 14964 Lassen ca. 10 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CDA38568  Sium suave T. C. Fuller 1959-7-7 4732 Lassen Highway 395, 7.5 miles east of Susanville. 0 Comment
  CHSC117279  Solanum dulcamara Lowell Ahart; John Dittes 2016-7-15 21226 Lassen About 1/2 mile (by road) souteast of the 4 tall poles, Ash Creek Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1261 Comment
  CHSC65162  Solanum triflorum Vernon H. Oswald; Lowell Ahart 1995-7-5 6958 Lassen Modoc Plateau. North of Honey Lake at Bull Flat on Smoke Creek Ranch Rd., 10.3 mi e of Hwy. 395. Roadside. 1432 Comment
  RSA128298  Solanum triflorum Peter H. Raven, Otto T. Solbrig 1958-6-17 13267 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  UCD136093  Solidago velutina subsp. californica G. Schoolcraft 1994-8-29 2426 Lassen about 1 mile west of Susanville up Piute Creek. 1341 Comment
  UC1583971  Sonchus asper G. Schoolcraft 1990-7-31 2117 Lassen along Hwy 299 between Bieber and Nubieber 1249 Comment
  HSC95263  Sparganium emersum Gordon Leppig, J. Cromwell 1997-7-27 626 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC66424  Sparganium natans Vernon H. Oswald 1996-6-15 7766 Lassen Modoc Plateau. Papoose Meadows located ca. 2 mi S of Gallatin Beach at Eagle Lake, NW of Susanville. In Papoose Creek where it leaves the meadow. 1633 Comment
  CHSC64869  Sphaeromeria potentilloides var. potentilloides Vernon H. Oswald 1995-6-26 6934 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the e side of the road adjacent to a flat of low sagebrush. 1542 Comment
  UC1037224  Spiraea douglasii Leo Whitney 1934-7-2 1592 Lassen ca 14 mi w Eagle Lake (Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  CAS-BOT-BC421460  Spiraea splendens M. S. Baker; Frank Nutting 1894-7-30 s.n. Lassen Silver Lake Comment
  RSA746511  Stachys ajugoides var. rigida K. M. Meyer, A. Townesmith 2007-7-21 142 Lassen Lassen National Forest. CA, 1.3 mi. on road 110, off Hwy A21, 1821 Comment
  HSC26818  Stanleya elata D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19286 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC60961  Stanleya pinnata var. pinnata G. Schoolcraft 1989-5-31 1880 Lassen Near intersection of Skedaddle Ranch and Wendel Roads. 1249 Comment
  CAS-BOT-BC311783  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen Near Karlo, about 12 miles north of Litchfield 1356 Comment
  JEPS95975  Stanleya viridiflora Vernon H. Oswald and L. 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: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  CHSC68859  Stellaria crispa Vernon Oswald; Lowell Ahart 1997-6-24 8610 Lassen South of Susanville on the north side of Diamond Mtn. at a slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  CHSC77201  Stenotus lanuginosus G. Schoolcraft 1993-6-10 2294 Lassen Along Clark's Valley Rd. s. of Red Rock Lake. 1828 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
  UC74066  Stephanomeria exigua subsp. exigua J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley 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
  UC303058  Stephanomeria lactucina Pearl Safford Lassen Susanville [uncertain locality] Comment
  CDA8868  Stephanomeria spinosa E. E. Fix 1946-7-21 Lassen Susanville. 0 Comment
  CAS-BOT-BC375742  Stephanomeria virgata Gary Schoolcraft 1985-9-4 1520 Lassen Along Hwy 395 above Pauline's Risser, Tule Patch Spr. 1524 Comment
  CHSC118491  Stipa hymenoides Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. A little north of County Road A-1 about 1/3 mile southwest of Sandy Beach cinder pits and two air miles north of Spalding marina. UTM 686984 x 4506793 1563 Comment
  OBI22293  Stipa webberi Robert F. Hoover 1940-9-29 4647 Lassen Pass between Shaffer Mt and Warren Peak Comment
  CHSC57125  Streptanthus Mary Meyer 1980-7-21 Lassen Near sharp bend in road on way to Fire Lookout. 2316 Comment
  UCD149957  Stuckenia filiformis subsp. alpina William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  HSC23510  Stuckenia pectinata R. Carter 1967-7-13 594 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  SEINET958426  Stuckenia pectinata Verne Grant, Irving Schneider 1947-1 8184 Lassen East side of Tule Lake. Comment
  HSC22877  Stuckenia pectinata John Pratt 1970-6-14 13 Lassen Comment
  UCD149959  Stuckenia striata William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  CAS-BOT-BC269699  Symphoricarpos mollis G. Schoolcraft 1997-6-24 2604 Lassen Doyle Grade W of Doyle 1706 Comment
  UC1120025  Symphoricarpos mollis A. Simontacchi 1940-6-24 890 Lassen 6.4 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1950 Comment
  CAS-BOT-BC237073  Symphoricarpos rotundifolius John Thomas Howell 1977-6-22 52396 Lassen Northeast of Susanville on road to Eagle Lake, Sierra Nevada Comment
  CHSC52664  Symphyotrichum campestre James D. Jokerst 1983-7-24 1885 Lassen Near Madeline Plains. 1614 Comment
  RSA518560  Symphyotrichum foliaceum var. foliaceum George K. Helmkamp 1990-9-23 G- 12 Lassen N of Ravendale 1677 Comment
  UC1037340  Symphyotrichum frondosum Leo Whitney 1934-9-6 3070 Lassen south shore of Eagle Lake Lassen National Forest 1584 Comment