Search Results — 2000 specimen records retrieved (1553 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC78036  Abies concolor John Thomas Howell 1976-7-19 51966 Lassen Gold Run Creek southwest of Susanville 1386 Comment
  SD132529  Abies concolor F. C. Vasek 1976-9-3 760903 3 Lassen 5 miles west of Susanville, north of State Highway #44 at a point Ao mile north of junction with State Highway #36 Comment
  CAS-BOT-BC28648  Achillea millefolium Louella Bass 1973-5-29 72 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC28650  Achillea millefolium Albert Michael Vollmer; L. Beane 1953-7-1 97 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur. 1554 Comment
  CHSC5191  Achillea millefolium J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek, Eagle Lake, Lassen Co., California. 1580 Comment
  CHSC60271  Achillea millefolium P. V. Caldwell 1972-6-23 245 Lassen Headwaters of Willow Creek, Upper Murer's Meadow. Comment
  JEPS127717  Achillea millefolium Alejandro Brambila, Michael Dolan 2016-7-25 CA 320 -172 Lassen Clarks Valley Road west off 395 right after Likely Mtn. About 1Mile before Christensen Corral Comment
  UC1136759  Achillea millefolium L. R. Short and Wm. Gansberg 1936-7-9 S 483 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1804 Comment
  UC74065  Achillea millefolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat; Long Valley Comment
Read comments
Jan 7 2012
  UCD50358  Achnatherum hymenoides P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia, California. Lassen County. Comment
  CAS-BOT-BC210663  Achnatherum lemmonii John Thomas Howell 1976-7-19 51980 Lassen On Gold Run Creek southwest of Susanville 1386 Comment
  UC1024816  Achnatherum lemmonii Leo Whitney 1935-6-19 3263 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  SEINET11695935  Achnatherum nevadense Unknown 1960-6-18 5729 Lassen southern Warner Mountains, 1.25 mi N of Blue Lake, in vicinity of Blue Lake Ranch 1981 Comment
  UC1143048  Achnatherum occidentale subsp. pubescens L. R. Short and J. Warren 1936-6-29 S- 462 Lassen Burgess Spring Experimental Range Lassen National Forest 1820 Comment
  UCD51167  Achnatherum occidentale subsp. pubescens A. H. Shunk 1923-8-1 s.n. Lassen Madeline. Comment
  UCD51205  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2069 Lassen Along US Hwy. 395, 1 mile east of Johnstonville. Comment
  UCD51228  Achnatherum occidentale subsp. pubescens George A. Fischer; Irwin H. Johnson 1933-7-12 F 218 Lassen Lassen County. 1722 Comment
  JEPS114857  Achnatherum thurberianum Lowell Ahart, John Dittes 2008-6-19 14870 Lassen about 100 yds E of Willow Creek, about 120 yds NE of Hwy 139, near Forest Road 36N02, about 19.6 mi E-SE of Bieber 1578 Comment
  CHSC105251  Acmispon americanus var. americanus 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
  CHSC29950  Acmispon americanus var. americanus Robin L. Ondricek 1978-6-8 51 Lassen Murrers Upper Meadow, .6 mi E of inersection with main rd. to ELFS. 1554 Comment
  CHSC113083  Acmispon denticulatus Lowell Ahart; John Dittes 2013-7-23 18888 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS60355  Aconitum columbianum Brown and Wieslander 1922-7-30 19 Lassen Eagle Lake, Martin Springs Comment
  OBI75866  Aconitum columbianum subsp. columbianum Anthony Baniaga 2011-8-9 490 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  CAS-BOT-BC391608  Actaea rubra Louella Bass 1973-6-17 119 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC391609  Actaea rubra John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49411 Lassen Elysian Valley, west of Janesville 1325 Comment
  POM1922B  Ageratina occidentalis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC30232  Ageratina occidentalis William Bridge Cooke 1938-8-24 11580 Lassen In small valley just west of Bolam Creek. Also on an outcropping west of Horse Camp in the Shasta Fir Forest 2133 Comment
  CAS-BOT-BC30233  Ageratina occidentalis Hans Leschke 1964-9-4 1894 Lassen Lassen Highway near Diamond Point Comment
  HSC63943  Ageratina occidentalis Teresa Prendusi 1980-7-16 Lassen Willow Creek 1463 Comment
  UC29341  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  CHSC91811  Agoseris glauca G. Douglas Barbe 1974-8-20 1922 Lassen Upper Lond Valley. Hallelujah Junction, northwest corner of jct. of US Hwy 395 and Hwy 70. 1524 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
  CHSC59071  Agoseris glauca var. monticola Vernon Oswald; Lowell Ahart 1992-8-25 5181 Lassen Lassen Volcanic National Park. Near Grassy Creek at the S end of Snag Lake, at the junction of Snag Lake-Butte Lake and Snag Lake-Horseshoe Lake trails. 1865 Comment
  UCD128593  Agoseris grandiflora G. Schoolcraft 2000-6-19 2904 Lassen Susanville; west of Cold Spring Valley. 1706 Comment
  CHSC66231  Agoseris heterophylla Vernon Oswald; Lowell Ahart 1996-6-24 7860 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC91310  Agoseris heterophylla Lowell Ahart; John Dittes 2005-6-1 11885 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2 1/2 miles (air) northwest of the intersection of Scott Road and Highway 70, 4.0 miles (air) northwest of Hallelujah Junction. 1438 Comment
  CHSC36467  Agoseris retrorsa Jeffrey R. Peek 1982-6-3 28 Lassen Ca. .6 mi W jct forest service rds 5.16 and 5.17, ca. 10 yd E 5.16 heading over Black Mtn. Comment
  UCR7835  Agropyron cristatum Marilyn Malin 1968-6-21 247 Lassen Brockman Flats Lava Bed,W side of Eagle Lake, site of 1956 Merrill burn 1600 Comment
  CHSC50848  Agropyron desertorum Vernon Oswald; Lowell Ahart 1990-7-25 4396 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 Comment
  UC60210  Agrostis J. Burtt Davy Jun 17 1897-Jun 24 1897 3303 Lassen Honey Lake Valley Comment
  CAS-BOT-BC127237  Agrostis exarata John Thomas Howell; Gordon H. True 1973-7-31 50021 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1737 Comment
  JEPS100322  Agrostis exarata Dean W. Taylor 2001-7-12 17829 Lassen Diamond Mountains, spring at mouth of canyon ca. 4 miles NW of Constantia, along Forest Road 25N02X 1341 Comment
  RSA129621  Agrostis exarata H. S. Yates 1936-8-11 6067 Lassen Baxter Creek 1280 Comment
  UC1037106  Agrostis exarata Leo Whitney 1934-9-1 3000 Lassen Fredonyer Campground Lassen National Forest 1706 Comment
  UCD52115  Agrostis exarata R. Tofsrud 1947-7-1 240 Lassen Between Bieber and Nubieber. Comment
  UCD52277  Agrostis exarata Malcolm A. Nobs; Galen Smith 1949-7-21 1057 Lassen 4 miles N of Madeline. Comment
  CAS-BOT-BC139678  Agrostis gigantea John Thomas Howell 1975-7-23 51401 Lassen Sierra Nevada. Susanville. 1295 Comment
  CAS-BOT-BC139679  Agrostis gigantea John Thomas Howell 1976-7-19 51975 Lassen Sierra Nevada. On Gold Run Creek southwest of Susanville. 1386 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
  UC1567418  Agrostis pallens G. Schoolcraft 1989-7-18 1978 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  CHSC29905  Agrostis scabra Robin L. Ondricek 1978-8-4 114 Lassen Near edge of Eagle Lake along grassy shoreline. 1554 Comment
  POM98581  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  SBBG115824  Agrostis variabilis J. T. Howell, G. H. True 1973-8-1 50234 Lassen Diamond Range, S of Susanville Comment
  CHSC113091  Alisma lanceolatum Lowell Ahart; John Dittes 2013-7-22 18841 Lassen West margin of a duck field, about 80 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  CHSC111099  Alisma triviale Lowell Ahart; John Dittes 2012-7-9 18294 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
  JEPS119644  Alisma triviale Lowell Ahart, John Dittes 2012-7-9 18294 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127168  Alisma triviale Lowell Ahart, John Dittes 2016-7-15 21221 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCD150402  Alisma triviale William Anderson 1963-7-10 s.n. Lassen Honey Lake Valley. Comment
  SEINET8193719  Allium M. J. Williams 1969-6-14 s.n. Lassen Ravendale. 1615 Comment
  CHSC64855  Allium acuminatum Vernon H. Oswald 1995-6-26 6926 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  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-BC459570  Allium acuminatum G. Schoolcraft 1989-5-31 1893 Lassen Along Skedaddle Ranch Road near stateline, Susanville 1584 Comment
  SEINET194965  Allium acuminatum A. A. Heller 1938-1 Lassen 0 Comment
  HSC69609  Allium anceps Gary Schoolcraft 1980-4-30 215 Lassen N base of Shaffer Mtn. near Shaffer Well 1354 Comment
  SEINET3883805  Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Highway 395, 3.0 miles south of Ravendale.; 0 Comment
  CHSC64812  Allium atrorubens var. atrorubens Vernon H. Oswald 1995-6-7 6836 Lassen Modoc Plateau, on N side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi E of Wendel, NE of Susanville. 1237 Comment
  UC1567422  Allium atrorubens var. atrorubens G. Schoolcraft 1989-5-31 1888 Lassen slopes of Skedaddle Creek n Wendel Rd.; Skedaddle Creek 1402 Comment
  HSC84127  Allium lemmonii Dale McNeal 1983-6-5 2840 Lassen Beside Eagle Lake Rd., 0.5 mi. N of Hwy. 36 Comment
  RSA27674  Allium lemmonii C. L. Hitchock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile west of Bieber, in adobe soil Comment
  SEINET3885792  Allium lemmonii Noel H. Holmgren, Patricia K. Holmgren 1978-6-12 8934 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance east-southeast of Ravendale.; 0 1768 Comment
  CAS-BOT-BC474076  Allium platycaule John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50684 Lassen South and southeast of Diamond Mountain, Sierra Nevada 2286 Comment
  RSA59747  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 miles west of Madeline on road from Adin. 1677 Comment
  CAS-BOT-BC476624  Allium tolmiei E. K. Balls 1950-5-18 14 .767. Lassen Along Ash Creek, above Ash Creek Public camp, off rd. from Adin to Medeline. 1584 Comment
  UC106708  Allophyllum integrifolium T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CAS-BOT-BC171315  Alnus incana subsp. tenuifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49461 Lassen Elysian Valley, W of Janesville. Sierra Nevada 1325 Comment
  CAS-BOT-BC171317  Alnus incana subsp. tenuifolia Brighton C. Cain 1925-8-24 117 Lassen Mt. Lassen Volcaninc National Park, 1 mi below Drakesbad 1645 Comment
  NY526213  Alnus incana subsp. tenuifolia G. Schoolcraft 1982-8-18 887 Lassen Along Doyle Grade Road, west of Doyle 1554.5 Comment
  SEINET7295647 Image available Alopecurus aequalis A. A. Beetle 1941-1 2795 Lassen 10 miles west of Chester, rte 36 Comment
  UC790958  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 mi. w. Chester (Rte. 36) 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
  UCD55895  Alopecurus geniculatus A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3371 Lassen 9.5 miles E of Bieber, Big Valley. Comment
  CHSC101019  Alyssum desertorum John Dittes 2008-5-22 1538 Lassen Modoc Plateau; ca 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca. 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace on northeast side of Willow Creek. 483 Comment
  CHSC67189  Alyssum desertorum James D. Jokerst 1991-5-29 3317 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, E and adjacent to the highway +/- 200 m S of its junction with the road to the W across the N end of the Lake. 1584 Comment
  CHSC64769  Alyssum minus subsp. micranthum Vernon H. Oswald 1995-5-31 6804 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  CHSC67190  Alyssum minus subsp. micranthum James D. Jokerst 1991-5-28 3293 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, ca. 400 ft E of the highway on slopes above road, S of a small canyon mouth. 1554 Comment
  CDA42845  Alyssum minus var. micranthum L. Ahart, John Dittes 2011-6-2 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  CDA23696  Amaranthus blitoides S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC27717  Amaranthus blitoides Robert A. Schlising 1978-7-27 3319 Lassen E of Eagle Lake and NE of Eagle L. Field Station. 1578 Comment
  CHSC29942  Amaranthus blitoides Robin L. Ondricek 1978-8-2 111 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  JEPS78111  Amaranthus blitoides Gary W. Zamzow 1972-7-18 86 Lassen beside Highway 395, 3 mi n Hallelujah Junction 1371 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
  SJSU13939  Ambrosia acanthicarpa N. A. Hopkins 1986-8-28 1378 Lassen by County Road 33 (Scott Road), lower Long Valley, N of Highway 70 & E of Beckwourth Pass Comment
  CAS-BOT-BC42889  Ambrosia acanthicarpa P. Monnet 1913-8-1 966 Lassen unspecified Comment
  CAS-BOT-BC142539  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley Comment
  CAS-BOT-BC142538  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  CAS-BOT-BC222253  Amsinckia John Thomas Howell 1934-6-16 12219 Lassen Big Valley, 4 miles ne. of Bieber Comment
  CHSC91309  Amsinckia menziesii Lowell Ahart; John Dittes 2005-6-1 11899 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
  UC61145  Amsinckia tessellata var. tessellata Jos. Burtt Davy Lassen Honey Lake Valley Awadee Comment
  SEINET6734941 Image available Anaphalis margaritacea C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC66371  Ancistrocarphus filagineus Vernon H. Oswald; Lowell Ahart 1996-6-17 7797 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Just E of Devils Corral Trailhead. 1420 Comment
  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
  CHSC12433  Antennaria Robert Severin 1969-6-26 22 Lassen Papoose Meadow, 4 mi s of E.L.B.S.; 1/4 mi n of Cow Camp. 1630 Comment
  UC380911  Antennaria argentea Marcus E. Jones, A. M. 1897-6-25 Lassen Susanville 1341 Comment
  UC891493  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen ca 12 mi n of, at lava beds Fall River Mills (Shasta Co.); Fall River 1371 Comment
  CHSC91298  Antennaria dimorpha Lowell Ahart; John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  CAS-BOT-BC59218  Antennaria dimorpha Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC69136  Antennaria geyeri John Thomas Howell 1934-7-8 12492 Lassen Spalding's, Eagle Lake Comment
  JEPS100336  Antennaria geyeri Dean W. Taylor 2001-7-19 17842 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  UC1137666  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Lassen National Forest 1828 Comment
  UC506910  Antennaria geyeri George A. Fischer and Irwin H. Johnson 1933-7-17 F- 267 Lassen Lassen National Forest 1722 Comment
  CAS-BOT-BC58691  Antennaria luzuloides John Thomas Howell 1934-7-6 12443 Lassen Harvey Valley Comment
  UC1125572  Antennaria luzuloides A. Simontacchi 1940-6-3 725 Lassen 8.3 mi se Alcohol Jacks Cabin; Halls Flat Quad. 1706 Comment
  UC1137667  Antennaria luzuloides L. R. Short and J. Warren 1936-6-23 S- 452 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1741 Comment
  RSA0065403  Antennaria luzuloides M. P. Harthill 1972-6-17 826 Lassen Madeline. 1676 Comment
  CHSC60811  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1719 Comment
  CAS-BOT-BC77284  Antennaria microphylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49414 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1583976  Antennaria rosea G. Schoolcraft 1990-7-2 2103 Lassen w of Cold Spring Mtn. 1645 Comment
  CHSC65289  Anthemis cotula Vernon H. Oswald; Lowell Ahart 1995-8-14 7175 Lassen Modoc Plateau. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 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
  JEPS96088  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1996-6-17 7777 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, n. side of Hwy. 36 between trail and hwy. bridges spanning the Susan R.); Modoc Plateau 1432 Comment
  UCD21048  Apocynum androsaemifolium E. Bortiri 2002-7-19 WFC 84 Lassen Along Rd 35N08, about 8 miles North of Poison Lake and Hwy 44,. Comment
  SEINET7881828 Image available Apocynum pumilum Helen K. Sharsmith 1955-1 4516 Lassen Ponderosa Pine-Black Oak forest adjacent to Highway 89 north of Hat Creek Ranger Station, Lassen National Forest. Altitude ca. 3800 feet. 1158 Comment
  NY119422  Arabis rectissima R. C. Rollins 1983-7-5 83227 Lassen 2 miles S of Eagle Lake Summit Comment
  RSA0001920  Arabis sabulosa var. frigida Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 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
  UC21853  Arctostaphylos nevadensis M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  UC549429  Arctostaphylos patula F. Farris 1934-12-30 Lassen Diamond Mt. 1524 Comment
  UC773875  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
  CHSC7703  Arctostaphylos patula subsp. gankinii Beverley J. Wise 1969-5-9 41 Lassen 11 mi. west of Susanville on Forest Serv. Rd. 8246 off Hwy 36. 1524 Comment
  UC584338  Arenaria aculeata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2262 Lassen s Susanville (Bare summit ridge and ridges south west of Diamond Mt.) 2164 Comment
  UC465892  Arenaria congesta var. congesta Franklin P. Nutting Lassen Silver Lake Comment
  SEINET530728  Arenaria congesta var. lithophila Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  SEINET530729  Arenaria congesta var. lithophila Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  UC1249269  Arenaria congesta var. subcongesta Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8463 Lassen 50 m se Susanville Comment
  UC1299621  Arenaria congesta var. subcongesta Freed W. Hoffman 1946-6-8 911 Lassen Dry Creek, Highway 395 Comment
  CAS-BOT-BC401791  Argemone munita subsp. rotundata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. E. of Susanville Comment
  CAS-BOT-BC401792  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3545 Lassen Hills north of Susanville Comment
  CHSC27596  Arnica chamissonis George Deniso 1978-7-21 96 Lassen E end of Mahogany Lake - SE of Eagle L. 2060 Comment
  JEPS114706  Arnica chamissonis 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
  SD113191  Arnica chamissonis Darley F. Howe 1964-8-2 3921 Lassen East Creek, Warner Mountains, Modoc National Forest 2010 Comment
  UC73900  Arnica chamissonis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CAS-BOT-BC82114  Arnica chamissonis H. M. Hall; E. B. Babcock 1903-6-24 4270 Lassen Near Great Spring, on Hat Creek 1402 Comment
  RSA505386  Arnica chamissonis subsp. foliosa R. C. Bacigalupi, G. Thomas Robbins 1955-7-20 5414 Lassen Along Mosquito Creek in Corporation Meadow, Modoc National forest, southern end of Warner Mountains 2043 Comment
  CHSC11767  Arnica cordifolia Wayne O. Baum 1971-6-21 71 -5 Lassen E. slope of Gallatin Peak. 1920 Comment
  JEPS94480  Arnica cordifolia Vernon H. Oswald and Lowell Ahart 1997-5-27 8527 Lassen 5.4 mi ne of Highway 139 0.4 mi e of its junction with the road to Shingle Mill Spring (n of Susanville on Forest Route 38N04); Forest Route 38N04 1798 Comment
  JEPS118456  Arnica cordifolia var. cordifolia Lowell Ahart, John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CHSC27166  Arnica dealbata J. D. Prouty 1978-7-27 31 Lassen 2.4 mi w of jct with road A-1 on n side of Merrill Flat Rd, s of Eagle Lake. 1740 Comment
  CHSC27167  Arnica dealbata J. D. Prouty 1978-7-27 30 Lassen 3.9 mi w of jct with road A-1 on n side of Merrill Flat Rd just e of Roney Corral, s of Eagle Lake. 1770 Comment
  CAS-BOT-BC85030  Arnica sororia E. B. Babcock; G. L. Stebbins 1936-6-8 1788 Lassen Gentle north facing slope of hillside, 2 miles north of Madeline. 1371 Comment
  UC1609362  Arnica sororia Vernon H. Oswald and Lowell Ahart 1993-7-8 5668 Lassen Halls Flat Rd (33N18) 0.4 mi sw Pittville Rd. (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, between road and open meadow to w) 1706 Comment
  UC29582  Arnica sororia M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Mts. Comment
  CAS-BOT-BC85028  Arnica sororia Clarence Quick 1963-7-12 63 -37 Lassen Black Mountain Experimental Forest east of Halls Flat 1859 Comment
  UCD129144  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UCD129188  Artemisia arbuscula F. C. Raney 1966-6-25 s. n. Lassen Harvey Valley, Lassen National Forest. Comment
  RSA359361  Artemisia arbuscula subsp. arbuscula L. M. Shultz, John Shultz 1985-6-23 8603 Lassen 41 miles north of Susanville on Hwy 395. 1433 Comment
  SD117633  Artemisia arbuscula subsp. arbuscula Jack L. Reveal 1984-8-15 2842 Lassen Along highway 44, ca. 19 miles north of Susanville 1584 Comment
  UC773844  Artemisia arbuscula subsp. arbuscula L. R. Short 1936-9-30 S- 506 Lassen Burgess Spring Experimental Range Lassen National Forest, Burgess Spring Experimental Range 1746 Comment
  UCR67442  Artemisia cana George K. Helmkamp 1990-9-23 A- 5 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC93742  Artemisia ludoviciana subsp. incompta Louella Bass 1974-7-1 s.n. Lassen Sierra Nevada - Elysian Valley 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
  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
  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
  CHSC23500  Artemisia tridentata Wayne O. Baum 1971-7-30 71 -55 Lassen S slope of Gallatin Peak. 2042 Comment
  UCD129363  Artemisia tridentata Beecher Crampton 1960-6-20 5736 Lassen Grass Valley, 4 miles southeast of Black's Mountain Experiment Station, USDA. 1676 Comment
  CHSC67056  Artemisia tridentata subsp. tridentata Willis Ball 1969-6-19 4 Lassen Found approx. 1/2 mile N of E.L.B.S. 1554 Comment
  UC1136978  Artemisia tridentata subsp. tridentata George A. Fisher and Irwin H. Johnson 1933-9-8 F 282 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1706 Comment
  UC762002  Artemisia tridentata subsp. tridentata R. F. Hoover 1940-9-28 4639 Lassen Leavitt Comment
  CAS-BOT-BC99281  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  CHSC105766  Asclepias fascicularis Nick Otting 2005-7-28 Lassen Five Springs Creek, downstream from Five Springs. 1356 Comment
  UCR67471  Aster foliaceus George K. Helmkamp 1990-9-23 G- 12 Lassen north of Ravendale 1677 Comment
  CHSC69211  Astragalus James D. Jokerst 1991-5-28 3299 Lassen Modoc Plateau. Junction Hwy. 395 with Hwy. 36 SE of Susanville, E side of road 150 ft S of junction. 1280 Comment
  RSA624916  Astragalus B. J. Cox, Paul Gallian 1971-6-2 2599 Lassen Hallelujah Jct. intersection of U.S. 395 and Hwy 70. Comment
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Jan 15 2016
  CAS-BOT-BC177433  Astragalus andersonii John Thomas Howell 1934-6-10 11875 Lassen Janesville Comment
  CHSC93569  Astragalus andersonii Lowell Ahart; John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  NY791376  Astragalus andersonii W. W. Eggleston 1911-5-29 6734 Lassen Vicinity of Doyle Station 1290 Comment
  SEINET5323325  Astragalus andersonii M. J. Williams 1974-8-4 L- 74 -83 Lassen west of Hwy 395, near Hwy 70 in former burn area 1494 Comment
  HSC61704  Astragalus anxius Thomas W. Nelson, Jane P. Nelson 1980-7-6 5988 Lassen In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin. Comment
  NY797390  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1645.9 Comment
  UC1567413  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen along n shore Eagle Lake; n shore Eagle Lake 1554 Comment
  HSC82253  Astragalus curvicarpus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6005 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA0028049  Astragalus curvicarpus John F. Emmel 1996-7-14 1423 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  RSA111039  Astragalus curvicarpus R. C. Barneby 1949-6-11 11 Lassen Secret Valley, 18 miles S of R(illegible) Comment
  RSA111043  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-15 5752 Lassen NE of Litchfield. 1234 Comment
  SEINET12162068  Astragalus curvicarpus K. R. Stern 1974-1 5816 Lassen 16.5 mi W of Madeline, on Madeline-Adin Rd. Likely Quadrangle, sec. 32, R11E T35N 1548 Comment
  CHSC64876  Astragalus filipes Vernon H. Oswald; Lowell Ahart 1995-6-19 6883 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. In wash on n side of road. 1371 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
  SBBG30554  Astragalus filipes D. Myrick 1968-6-19 1959 Lassen Hwy 395, 23 mi S of Alturas 1524 Comment
  UCD55263  Astragalus filipes Ellen Dean 2006-5-15 3061 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  RSA111097  Astragalus filipes H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-15 5459 Lassen Volcanic mesa E. of Viewland. 1311 Comment
  RSA339170  Astragalus filipes Margaret J. Williams 1983-7-31 339170 Lassen Ash Valley road, 17 mi. from Aden. 1829 Comment
  UCD104699  Astragalus filipes Michael A. Vincent 1999-6-9 8579 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  CDA26675  Astragalus gibbsii Taylor Jun 1938 Lassen Susanville. 0 Comment
  POM24782  Astragalus gibbsii Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles below Eagle Lake. Comment
  SD43503  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford, dry silty flats 1260 Comment
  RSA110067  Astragalus gilensis H. D. Ripley, R. C. Barneby 1944-5-29 5951 Lassen Container 1372 Comment
  CAS-BOT-BC186913  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5749 Lassen W. of Susanville 1310 Comment
  RSA0006769  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 s.n. Lassen West of Susanville. Comment
  POM23664  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC64785  Astragalus iodanthus var. diaphanoides Vernon H. Oswald 1995-5-24 6763 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1249 Comment
  CAS-BOT-BC229045  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  POM45790  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 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
  CAS-BOT-BC187154  Astragalus lentiginosus var. chartaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49230 Lassen On Highway 395, 7 miles southeast of Milford 1280 Comment
  CAS-BOT-BC187155  Astragalus lentiginosus var. chartaceus H. D. Ripley; R. C. Barneby 14 Jun. 5744 Lassen Hidden Valley E of Susanville 1310 Comment
  RSA109609  Astragalus lentiginosus var. chartaceus H. D. Ripley, R. C. Barneby 1943-6-14 5744 Lassen West of Susanville 1311 Comment
  CHSC5280  Astragalus lentiginosus var. lentiginosus 1926-6-1 Lassen Buck's Point, Eagle Lake. 1615 Comment
  CHSC64877  Astragalus lentiginosus var. salinus Vernon H. Oswald; Lowell Ahart 1995-6-19 6903 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Road., 8.5 mi e of Hwy. 395. 1444 Comment
  CDA19719  Astragalus malacus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  CDA26707  Astragalus malacus T. C. Fuller 1963-6-11 10659 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC71083  Astragalus malacus Vernon H. Oswald; Lowell Ahart 1998-5-22 9104 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  CHSC7666  Astragalus malacus Beverley J. Wise 1969-5-3 55 Lassen 4.6 mi. east of junction of Hwy 395 on Las. Co. road 338 (Smoke Creek Road). 1554 Comment
  UCD55300  Astragalus malacus Ellen Dean; Gary Schoolcraft 2006-5-16 3121 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
  HSC63126  Astragalus malacus Teresa Prendusi 1980-4-28 1101 Lassen Rice Canyon 1341 Comment
  UC1561919  Astragalus obscurus Barbara Ertter with Gary Schoolcraft 1987-6-16 7184 Lassen ridge w Hot Springs VABM (Skeedaddle Mountains on ne side Honey Lake); Skeedaddle Mountains, ne side Honey Lake, w of Hot Springs 2133 Comment
  JEPS54791  Astragalus pulsiferae J. B. Davy June 1897 Lassen Chat Long Valley, Chat Comment
  UC1483870  Astragalus pulsiferae G. Schoolcraft 1980-7-10 301 A Lassen near Eagle Lake Campground (at n end of Eagle Lake); n end Eagle Lake, near Eagle Lake campground 1584 Comment
  UC65741  Astragalus pulsiferae P. B. Kennedy 1901-6-10 Lassen R.R. Station Constantia (Constantia) Comment
  NY694125  Astragalus pulsiferae var. pulsiferae H. D. D. Ripley 1943-6-7 5499 Lassen East side of Beckworth Pass, south Lassen Co. 1494 Comment
  RSA0006848  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass. 1494 Comment
  CHSC23489  Astragalus purshii Waynes O. Baum 1971-7-16 71 -70 Lassen W. slope of Gallatin Peak. 1981 Comment
  CHSC5282  Astragalus purshii V. Holt 1944-7-9 Lassen Dow Butte. 2042 Comment
  CAS-BOT-BC194088  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Perkin's Ranch, top of Diamond Mt., Susanville 2225 Comment
  RSA715542  Astragalus purshii var. purshii L. Ahart 2005-6-1 11870 Lassen About 1/2 miles west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70., 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CAS-BOT-BC194089  Astragalus purshii var. purshii C. R. Quick 1964-7-28 64 -84 Lassen Edge of Halls Flat , Black's Mt. Experimental Forest Comment
  UC773896  Astragalus purshii var. tinctus L. R. Short and J. Warren 1936-6-11 S- 402 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range (Lassen National Forest) 1789 Comment
  UC1601984  Astragalus purshii var. tinctus Mrs. R. M. Austin 1879-1 Lassen Comment
  CHSC68862  Astragalus whitneyi var. confusus Vernon H. Oswald; Lowell Ahart 1997-6-24 8634 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
  JEPS90987  Astragalus whitneyi var. confusus Dean Wm. Taylor with Glenn Clifton 1990-6-12 10887 Lassen along creek at crossing of Road 527 (Forest Road 39N08); Modoc Plateau, Ash Valley, Ash Creek 1554 Comment
  JEPS94456  Astragalus whitneyi var. confusus Vernon Oswald and Lowell Ahart 1997-6-24 8634 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  CHSC71080  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1998-5-22 9130 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Along a streamlet. 1463 Comment
  NY652203  Atriplex argentea var. hillmanii G. Schoolcraft 1989-5-16 1874 Lassen West of Highway 395 about 2 miles south of Karlo turnoff 1356.4 Comment
  CDA23253  Atriplex confertifolia Robin Breckenridge 2007-5-1 PDR# 1349824 B Lassen Wendel. 0 Comment
  UCSB61625  Atriplex confertifolia True, Jr., Gordon 1936-6-24 Lassen North shore of Honey Lake, Honey Lake Valley 1219 Comment
  UC1567451  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen Secret Valley w Hwy 395; Secret Valley 1347 Comment
  SEINET515855  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 Comment
  SEINET515856  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 Comment
  CDA2954  Atriplex hortensis E. E. Fix 1962-5-15 Lassen Pete Mendiboure property, Madeline. 0 Comment
  RSA122664B  Avena sativa A. Simontacchi 1940-6-13 854 Lassen 3.4 miles W.S.W. of Patterson Mtn.; Halls Flat 1738 Comment
  JEPS103182  Balsamorhiza G. Schoolcraft 2000-4-26 2893 Lassen West of Grasshopper Valley 1706 Comment
  CHSC68609  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1997-5-7 8402 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. 1420 Comment
  CHSC7646  Balsamorhiza hookeri Beverly J. Wise 1969-4-17 14 Lassen 1 mi north on Hwy 139. 1341 Comment
  UC1368790  Balsamorhiza hookeri John L. Strother 1970-5-23 957 Lassen 6 mi n Honey Lake 1280 Comment
  UC1794994  Balsamorhiza hookeri R. K. Brummitt 1998-5-17 19897 Lassen 12 km W of Susanville, E foot of Fredonyer Pass 1400 Comment
  CAS-BOT-BC106490  Balsamorhiza hookeri Ella Dales Cantelow 1941-5-22 3550 Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville Hwy #36 Comment
  UCD20370  Balsamorhiza macrolepis Tom Vestal DVM 2002-5-23 s.n. Lassen south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir. Comment
  CHSC98317  Balsamorhiza macrolepis var. platylepis B. Castro; L. P. Janeway 2005-7-10 1500 Lassen Northern High Sierra Nevada. Nr Plumas Co line. Crest of the Diamond Mtns, overlooking NW end of Honey Lake, at N end of Stony Ridge. At NE edge of windswept, low flat ridge off end of jeep road ca 0.7 mi from its jcn with sharp bend in Rd 27N12, above headwaters of Stony Creek. 1993 Comment
  UC1137703  Balsamorhiza sagittata A. Simontacchi 1940-6-4 802 Lassen 7.0 mi sw of Jacks Lake (Halls Flat); Halls Flat 1828 Comment
  CHSC5234  Barbarea orthoceras A. Santos 1946-6-12 Lassen Eagle Lake. Pine Creek. 1584 Comment
  CHSC68741  Barbarea orthoceras Vernon H. Oswald; Lowell Ahart 1997-5-27 8501 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi easat of Hwy. 139. On the flood plain of a creek paralleling the road. 1546 Comment
  JEPS114368  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
  CHSC63703  Bassia hyssopifolia Vernon H. Oswald 1994-9-6 6469 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. Common in the parking lot and along the levee road on the N side of the creek. 1490 Comment
  CHSC76094  Bassia hyssopifolia Lowell Ahart 1999-9-13 8206 Lassen On the east side of the dirt road and 1/2 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  CHSC99983  Bassia hyssopifolia L. P. Janeway 2008-8-2 9525 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  SEINET3872219  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake.; 0 1559 Comment
  UCD146585  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  JEPS124725 Image available Beckmannia eruciformis Virginia Hardham 1965-7-13 134 Lassen 1.4 mi. past junction As and 299 going west. Comment
  UC188777  Beckmannia syzigachne Milo S. Baker Lassen Dixey Valley Comment
  UC37443  Beckmannia syzigachne M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixey Valley Comment
  UC573777  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 mi ese Susanville; Susanville Quadrangle 1280 Comment
  UC1191930  Berula erecta Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 a Lassen 1 mi s of Doyle (Long Creek); Long Creek Comment
  CDA38212  Berula erecta T. C. Fuller 1963-7-15 10891 Lassen South of road to Pittsville, 5.4 miles northwest of Little Valley. 0 Comment
  CHSC117276  Bidens cernua Lowell Ahart; John Dittes 2016-7-15 21225 Lassen On the west side of the road about 600 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC30552  Bidens cernua J. Burtt Davy Jun 17 1897-Jun 24 1897 3309 Lassen Tule Confederacy Comment
  CAS-BOT-BC413001  Bistorta bistortoides A. A. Heller 1938-6-4 15141 Lassen 2 miles east of Westwood 1402 Comment
  CAS-BOT-BC413002  Bistorta bistortoides L. G. Bennett 1967-7-14 174 Lassen 5.3 miles from the junction of Highway 44 and the Silver Lake rd. on Highway 44 1950 Comment
  CHSC4444  Blepharipappus scaber K. R. Stern 1967-7-1 2444 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  UC1143001  Blepharipappus scaber August L. Hormay 1934-5-15 Lassen 1 mi n of Eldrigde's 1554 Comment
  UC1924224  Blepharipappus scaber Debra Valov 2004-6-8 2004250 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  OBI48164  Blepharipappus scaber Rhonda Riggins 1989-4-27 1640 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  SEINET10757900  Blepharipappus scaber Billy Joe Cox 1971-6-2 Cox 2984 Lassen Appox. 12 mi. S of Adin on CA. Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  SEINET3132721  Blepharipappus scaber J. L. Strother 1970-5-13 953 Lassen ca. 6 mi. N of Honey Lk. 1280 Comment
  UCD129601  Blepharipappus scaber Bob Powell; Vic Claussen 1986-7-17 3274 Lassen 6 air miles south - southwest of Nubieber, within 100 feet of gate across main north-south trending road. 1402 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
  CHSC75356  Boechera puberula Vernon H. Oswald 1999-5-7 9725 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  CAS-BOT-BC25512  Boechera retrofracta John Thomas Howell; Gordon H. True 1973-7-31 50039 Lassen Sierra Nevada. Diamond Range on road from Janesville to Thompson Peak. 1737 Comment
  UC1143032  Boechera retrofracta L. R. Short 1936-6-1 S- 354 Lassen Burgess Spring Experimental Range Lassen National Forest 1859 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
  CAS-BOT-BC25864  Boechera subpinnatifida Doris Kildale Gillespie 1930-5-14 9382 Lassen Fredonia [Fredonyer] Pass near Susanville. Comment
  CAS-BOT-BC25900  Boechera suffrutescens John Thomas Howell 1934-7-10 12537 Lassen Between Harvey Valley and Patterson Flats. Comment
  CAS-BOT-BC149497  Bromus briziformis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Few miles north of Leitchfield in lava country. Comment
  CHSC27122  Bromus briziformis Robert A. Schlising 1978-6-28 3295 Lassen E of Eagle Lake at Lower Dry Lake. 1645 Comment
  CHSC36451  Bromus briziformis Susan H. Euing 1982-6-2 5 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of Hwy 139 and Ravendale Rd. Comment
  CAS-BOT-BC149583  Bromus carinatus var. carinatus Parkison 1916-6-21 42 Lassen Near Patterson. 1706 Comment
  UC53631  Bromus carinatus var. carinatus M. S. Baker and Frank Nutting 1894-7-5 Lassen s of Dixie Valley Comment
  UCD59087  Bromus carinatus var. marginatus L. Whitney 1933-8-1 s.n. Lassen Harvey Mountain. Lassen Forest. 1828 Comment
  UCD59099  Bromus carinatus var. marginatus R. Tofsrud 1947-7-1 224 Lassen Between Ravendale and Thermo. Comment
  UCD59217  Bromus carinatus var. marginatus L. Whitney 1935-6-19 3262 a Lassen Fruit Grower's Supply Company, Lassen National Forest. Comment
  HSC22359  Bromus commutatus D. E. Anderson 1969-7-5 4991 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  RSA0065491  Bromus commutatus Marion P. Harthill 1974-6-14 s.n. Lassen Madeline. 1524 Comment
  UCD59488  Bromus diandrus L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
Read comments
Jun 24 2009
  CHSC112471  Bromus hordeaceus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18783 Lassen Along the fence on the west side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles south of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CAS-BOT-BC155323  Bromus inermis John Thomas Howell; Gordon H. True 1973-8-1 50221 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. 2164 Comment
  CHSC5253  Bromus inermis subsp. inermis P. Balch 1955-7-23 Lassen Stafford's Eagle Lake Resort. 1569 Comment
  CDA1829  Bromus japonicus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 Comment
  CHSC64901  Bromus japonicus Vernon H. Oswald; Lowell Ahart 1995-6-19 6874 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  OBI82789  Bromus japonicus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3923 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
  UC1131320  Bromus marginatus H. P. Hagge 1929-9-14 33 Lassen Logan Mountain 1828 Comment
  RSA0062688  Bromus subvelutinus Marion P. Harthill 1971-6-21 210 Lassen Susanville. Comment
  CAS-BOT-BC161576  Bromus suksdorfii Clare B. Hardham 1971-8-22 18407 Lassen Diamond Mountain. Comment
  CDA1862  Bromus tectorum A. A. Beetle 1941-6-28 2796 Lassen Rte. 36, 10 miles west of Chester. 0 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
  HSC79991  Bromus tectorum William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UC1024872  Bromus tectorum Leo Whitney 1935-5-26 3155 Lassen 10 mi e of Adin (Ash Creek); Ash Creek Comment
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Jun 24 2009
  SEINET10515057  Bromus tectorum Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3117 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC185001  Calamagrostis stricta subsp. inexpansa A. A. Beetle 1941-6-28 2805 Lassen 10 miles west of Chester. Comment
  HSC95308  Calamagrostis stricta subsp. inexpansa Gordon Leppig, Kai Neander, Juli Neander 1997-7-25 685 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC438314  Calandrinia ciliata T. L. Secrest 1961-6-8 s.n. Lassen Edge of McCoy Flat Reservoir, ca. 14 mi. n. of Westwood Comment
  UC1537209  Calochortus leichtlinii Gordon H. True Jr. 1936-6-25 533 Lassen n side Hog Flat Reservoir 1524 Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  SEINET10675935  Caltha leptosepala var. biflora Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A21. 1920 Comment
  UC1136686  Calyptridium monospermum A. Simontacchi 1940-6-17 941 Lassen 2.3 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1798 Comment
  CHSC6233  Calyptridium umbellatum L. Harman 1946-6-23 Lassen Roop mountain. 2133 Comment
  UC699726  Calyptridium umbellatum Farris Farris 1936-6-15 Lassen Eagle Lake road 1676 Comment
  RSA122815  Calystegia occidentalis subsp. occidentalis L. R. Short, Wm. Gansberg 1936-7-3 S- 469 Lassen MDM, Burgess Spr. Exp. Range. 1849 Comment
  CDA39903  Calystegia occidentalis subsp. occidentalis T. C. Fuller 1965-6-3 13606 Lassen Chemically treated railroad right of way, Susanville. 0 Comment
  UC843733  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 mi s of Westwood 1524 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
  POM38357  Camissonia andina Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  RSA339990  Camissonia andina Noel Holmgren, Patricia K. Holmgren 1980-7-5 9521 Lassen Lassen County: upper Smoke Creek drainage, 20.4km (12.7miles) from Hwy 395 via Rye Patch Canyon, 24km (15miles) airline distance SE of Ravendale 1585 Comment
  POM38501  Camissonia claviformis subsp. cruciformis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  RSA144902  Camissonia claviformis subsp. cruciformis G. I. Stage, R. Thorp 1959-6-20 59 -116 Lassen 9.6 miles north of Litchfield Comment
  RSA38439  Camissonia claviformis subsp. cruciformis P. A. Munz 1947-5-19 11873 Lassen 19 miles south of Ravendale. 1341 Comment
  NY851343  Camissonia contorta LeDoux 1973-5-25 870 Lassen Collected 3 miles north of Milford on Hwy 395 at Honey Lake campgrounds Comment
  CHSC71092  Camissonia pubens Vernon H. Oswald; Lowell Ahart 1998-5-22 9136 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. Roadside banks. 1341 Comment
  HSC30040  Camissonia subacaulis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19152 Lassen 3 mi. N of Westwood Comment
  NY852052  Camissonia subacaulis G. Schoolcraft 1993-6-10 2288 Lassen North of Clark's Valley Road east of Red Rock Lake 1829 Comment
  NY852083  Camissonia tanacetifolia G. Schoolcraft 1997-7-2 2607 Lassen On Mud Flat west of Highway 395 1341 Comment
  NY852078  Camissonia tanacetifolia P. H. Raven 1962-5-28 17876 Lassen 0.5 mile north of Ravendale Comment
  CAS-BOT-BC160875  Camissonia tanacetifolia subsp. tanacetifolia Noel H. Holmgren; Patricia K. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of US Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CAS-BOT-BC160877  Camissonia tanacetifolia subsp. tanacetifolia R. K. Gierisch; D. H. Esplin 1969-7-18 3550 Lassen Near Modoc National Forest. Madeline Plains Comment
  RSA339989  Camissonia tanacetifolia subsp. tanacetifolia Noel Holmgren, Patricia K. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  CAS-BOT-BC160874  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1962-5-28 17875 Lassen 11.6 miles north of Litchfield Comment
  UCD114153  Capsella bursa-pastoris L. R. Short; J. Warren 1936-6-9 S- 408 Lassen Burgess Spring Experimental Range; around old sheep bed-grounds. 1844 Comment
  UC1609211  Cardamine breweri Vernon H. Oswald and Lowell Ahart 1993-8-3 5743 Lassen ca 13 mi (air) n. Lake Almanor (s.w. edge Cooper Swamp located e. of Silver Lake just e. of the Caribou Wilderness); Cooper Swamp 1932 Comment
  CAS-BOT-BC37252  Cardamine breweri Louella Bass 1980-5-22 s.n. Lassen Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville. Comment
  UC117814  Cardamine nuttallii var. covilleana Brandegee 1892-7-2 Lassen Susanville Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park 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
  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
  SEINET7550662 Image available Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flats; Black Mountains Experimental Forest. Poison Lake 7.5' quad. 1767 Comment
  CDA33021  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen Adjacent to boat ramp, campground on the east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. 0 Comment
  SEINET7550707 Image available Carex athrostachya John Thomas Howell 1934-7-7 12472 Lassen Pine Creek Flat. Comment
  HSC95168  Carex cusickii Gordon Leppig, J. Cromwell 1997-7-26 600 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95276  Carex cusickii Gordon Leppig, J. Cromwell 1997-7-27 620 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC110089  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  SEINET11309924 Image available Carex davyi D. E. Lepley 2012-1 1 Lassen On the South flank of Whaleback Mt., about 3.5 air miles NNW of Christie Campground at Eagle Lake and about 500 feet from FS21 (Road 32N02), on the Pikes Point 7.5' quad. UTM (NAD83, Garmin GPSmap 60CS): 0680730 x 4498190 at the northernmost, 0680750 x 4498124 at the southernmost. Comment
  UC2046018  Carex deflexa var. boottii Nick Otting and Dick Brainerd 2003-7-15 683 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 air miles south-southwest of Susanville. Comment
  CHSC91329  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
  HSC66737  Carex douglasii J. P. Smith, J. O. Sawyer 1971-5-23 4664 Lassen Along Hwy. 139, 1 mi. S of jct. with road to Thermo Comment
  SEINET10823343  Carex douglasii Gordon H. True 1939-6-15 True 996 Lassen Bullard Lake west of Grasshopper Valley. Comment
  CAS-BOT-BC75502  Carex echinata var. ormantha Leo Whitney 1934-8-2 1967 Lassen Bridge Creek Camp. 1737 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
  UCD140321  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Harvey Valley, 6 miles north Bogard Ranger Station, Lassen National Forest. 1676 Comment
  CHSC61066  Carex lasiocarpa Vernon H. Oswald; Lowell Ahart 1993-8-3 5752 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. In the NW part of the swamp. 1932 Comment
  HSC103667  Carex lemmonii Thomas W. Nelson, Jane Nelson 1985-8-10 8006 Lassen Along north side of Silver Lake 1829 Comment
  CHSC76848  Carex lenticularis var. lipocarpa L. P. Janeway; Loren Gehrung 1999-10-9 6594 Lassen High Cascade Range. In southwestern arm of Caribou Lake, 1995 Comment
  HSC95192  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC110970  Carex nebrascensis Lowell Ahart; John Dittes 2012-7-9 18298 Lassen Scattered along a small drainage, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northest of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC119714  Carex nervina Clare B. Hardham 1971-8-22 18405 Lassen Diamond Mountain. 2133 Comment
  CAS-BOT-BC119715  Carex nervina Clare B. Hardham 1961-6-17 7508 Lassen Baxter Creek south of Susanville. Comment
  CHSC66413  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-17 7809 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1420 Comment
  CHSC89747  Carex petasata L. P. Janeway 2004-6-26 8153 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC1133449  Carex petasata Robert W. Gardner 1937-6-18 G 6 Lassen Burgess Spring Experimental Range 1699 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
  SEINET10585735  Carex praegracilis Lowell Ahart, John Dittes 2011-6-20 Ahart 17477 Lassen T38N, R10E, center of north 1/2 Section 22. About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1521 Comment
  SEINET7572131 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11879 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  SEINET7572132 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen On west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CAS-BOT-BC118402  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen Along shore of Eagle Lake near Stone Ranch. 1554 Comment
  HSC48218  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19222 Lassen 2 mi. N of Westwood 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
  HSC48075  Carex simulata D. H. Norris, F. J. Hermann 1972-5-17 22630 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  HSC95281  Carex simulata Gordon Leppig, J. Cromwell 1997-7-27 619 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95325  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 509 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS96099  Carex simulata Vernon H. Oswald and Lowell Ahart 1996-6-17 7815 Lassen Bizz Johnson Trail at 6.0 mi post e Devils Corral Trailhead (<trailhead> located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UC1108042  Carex specifica E. B. Copeland 1932-8-15 Lassen woods between Hat Lake and Summit Lake; Mount Lassen 1981 Comment
  CAS-BOT-BC117018  Carex straminiformis Clare B. Hardham 1971-8-22 18423 Lassen Diamond mountain. Comment
  HSC97395  Carex straminiformis L. P. Janeway 2003-7-24 7917 Lassen High Cascade Range, along FS 30N14, 1.1 km from FS 30N21, upper Susan River, 4.7 mi. W of Clover Valley 1932 Comment
  CAS-BOT-BC116621  Carex subfusca Leo David Whitney 1934-8-2 1971 Lassen Moist stream bank, Bridge Creek Camp. 1737 Comment
  CAS-BOT-BC116622  Carex subfusca W. B. Cooke; V. G. Cooke 1976-10-7 53192 Lassen Lassen Volcanic National Park, Butte Lake. 1841 Comment
  CAS-BOT-BC115281  Carex utriculata L. S. Smith 1918-8-11 1020 Lassen Lost Lake. Comment
  CAS-BOT-BC115282  Carex utriculata W. B. Cooke; V. G. Cooke 1976-10-7 53193 Lassen Butte Lake, Near lake shore, Lassen Volcanic National Park. Comment
  HSC103651  Carex utriculata Thomas W. Nelson, Jane Nelson 1985-8-10 8009 Lassen Along north side of Silver Lake 1829 Comment
  JEPS103197  Carex vallicola B. Corbin 2001-5-30 1002 Lassen S of Harter Flat, along jeep road 1 mi S of Nelson Corral Res. 1868 Comment
  RSA298353  Carex whitneyi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19241 Lassen About 2 miles north of Westwood. Comment
  CHSC116919  Castilleja angustifolia J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  CHSC64808  Castilleja angustifolia Vernon H. Oswald 1995-5-31 6801 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  RSA17674  Castilleja angustifolia Elmer I. Applegate 1934-5-4 8921 Lassen South of Secret Valley. Comment
  UC1393122  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen about 6 mi n Honey Lake 1280 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
  CHSC6267  Castilleja applegatei subsp. pinetorum M. West 1946-6-20 Lassen Meadown above Grasshopper Valley. 1645 Comment
  CHSC7751  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-3 106 Lassen 28.4 mi. N.E. of Susanville. 1554 Comment
  UC1063044  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  CAS-BOT-BC249620  Castilleja applegatei subsp. pinetorum F. Farris 1935-5-15 s.n. Lassen Ramsey ranch near Susanville Comment
  JEPS94529  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1997-6-24 8642 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  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
  UC1609193  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  UC725999  Castilleja campestris subsp. campestris A. A. Heller 1938-6-23 15218 Lassen between Termo and Madeline (along U.S. Hwy 395) 1615 Comment
  HSC69066  Castilleja linariifolia Gary Schoolcraft 1979-7-5 124 Lassen Near top of Observation Peak 2134 Comment
  CAS-BOT-BC244892  Castilleja miniata John Thomas Howell 1934-7-10 12559 Lassen Black's Mt. Comment
  CAS-BOT-BC244891  Castilleja miniata anonymous 1927-7-1 40 Lassen Bogard R. S. pasture 1712 Comment
  POM44361  Castilleja miniata Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC241001  Castilleja pilosa B. Bartholomew; B. Anderson 1988-6-25 4369 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC241002  Castilleja pilosa Doughitt; Parkison 1916-6-8 4 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC12962  Castilleja pilosa K. R. Stern 1974-6-26 5871 Lassen Open sagebrush scrub adjacent to Pine Creek, 3.7 mi n of intersection between County Rd. A-21 to Westwood and Hwy. 44, on e side of Hwy. 44. Comment
  JEPS114696  Castilleja pilosa Lowell 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
  RSA0047057  Castilleja pilosa L. P. Janeway 2004-6-26 8151 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
  UC1012185  Castilleja pilosa Francis W. Pennell 1940-6-9 25761 Lassen 5 mi s Ravendale (Route 395) 1645 Comment
  CHSC113090  Castilleja tenuis Lowell Ahart; John Dittes 2013-7-22 18840 Lassen West margin of a duck field, about 30 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60853  Castilleja tenuis Vernon H. Oswald; Lowell Ahart 1993-6-28 5576 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  RSA0045639  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-22 15027 Lassen About 20 yards west of the road levee, 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
  CDA7137  Castilleja tenuis G. Schoolcraft 1993-6-29 s.n. Lassen Ash Valley RNA 16 miles E of Adin, CA Comment
  CHSC29953  Caulanthus major Robin L. Ondricek 1978-6-8 46 Lassen Ridge E of Lower Dry Lake. 1767 Comment
  CHSC80621  Caulanthus major var. nevadensis Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolscraft 2001-6-2 10036 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountin from the end of a $WD road. 1828 Comment
  CAS-BOT-BC49258  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7993 Lassen Big Valley Mts. Comment
  CAS-BOT-BC52054  Ceanothus prostratus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16318 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  CHSC107342  Ceanothus prostratus Lowell Ahart; John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1281294  Ceanothus prostratus H. E. McMinn 1941-8-27 5400 Lassen 3.5 mi from Pine Cone Inn (5 mi from Newbieber [Neubieber?]); 5 mi from Neubeiber Comment
  HSC30197  Ceanothus prostratus var. laxus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19257 Lassen Harvey Valley near Cone Springs Comment
  CHSC91290  Ceanothus velutinus var. velutinus Lowell Ahart; John Dittes 2005-6-2 11943 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  JEPS107853  Ceanothus velutinus var. velutinus Lowell Ahart, John Dittes 2005-6-2 11943 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  RSA747546  Ceanothus velutinus var. velutinus K. M. Meyer, A. Townesmith 2007-7-23 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CDA7344  Centaurea squarrosa Loring White 1950-8-19 Lassen Cramer Ranch. Big Valley. 0 Comment
  JEPS30734  Centaurea virgata subsp. squarrosa E. E. Fix 1960-9-21 Lassen Bieber, vic. of Comment
  CHSC76087  Centromadia pungens subsp. pungens Lowell Ahart; Vernon H. Oswald 1999-9-13 8224 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CAS-BOT-BC400183  Ceratophyllum demersum D. Toren; B. Trowbridge 1975-6-19 5183 Lassen Blue Lake 1828 Comment
  CAS-BOT-BC143810  Cercocarpus ledifolius var. ledifolius A. G. Brenneis 1928-5-28 3 Lassen 1/2 mi. East of Willow Springs, Lassen National Forest 1371 Comment
  CHSC23520  Cercocarpus ledifolius var. ledifolius Wayne O. Baum 1971-6-28 71 -47 Lassen E. slope of Gallatin Peak. 2103 Comment
  CHSC61997  Cercocarpus ledifolius var. ledifolius Brian Murray 1994-6-4 20 Lassen 0.8 miles North of the A21 turnoff on road A1. 50 ft. from the ice cave. 1554 Comment
  RSA0027356  Chaenactis John F. Emmel 1994-7-17 1331 Lassen Summit area of Observation Peak. 2378 Comment
  RSA637572  Chaenactis douglasii Michael A. Vincent 1999-6-9 8582 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CHSC13597  Chaenactis douglasii var. douglasii J. Pitts 1972-6-22 256 Lassen 20 yds. se of Shepherd's Hall, Eagle Lake Field Station. Comment
  HSC42418  Chaenactis douglasii var. douglasii Barbara Kelly 1977-8-9 560 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  CAS-BOT-BC276621  Chaenactis douglasii var. douglasii Gary Schoolcraft 1982-7-6 766 Lassen Fort Sage Mountains, near Jesus Spring 1950 Comment
  HSC68932  Chaetadelpha wheeleri Gary Schoolcraft 1980-6-12 279 Lassen Near Skedaddle Creek on Wendel Hwy. 1238 Comment
  NY758642  Chamaebatiaria millefolium G. Schoolcraft 1981-7-29 554 Lassen On south slope of McDonald Peak 2134 Comment
  UC747012  Chamaebatiaria millefolium G. Thomas Robbins 1945-10-6 2151 Lassen nw slope ofCrater Lake Mountain, Lassen National Forest Crater Lake Mountain; Lassen National Forest, Crater Lake Mountain 1981 Comment
  UC1542162  Chamaesaracha nana Paul Covel 1986-6-6 Lassen e of Chester (Lake Almanor dike); Lake Almanor Comment
  CHSC113085  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18857 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  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
  CAS-BOT-BC69434  Cheilanthes feei B. C. Cain 1923-8-24 90 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park. 1645 Comment
  CHSC76275  Chenopodium album Lowell Ahart; Vernon H. Oswald 1999-9-13 8222 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC105236  Chenopodium berlandieri Lowell Ahart; John Dittes 2010-7-31 17021 Lassen About 40 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  UC1191330  Chenopodium chenopodioides Malcolm A. Nobs and S. Galen Smith 1949-7-22 1071 Lassen Eagle Lake; ne shore Comment
  NY652205  Chenopodium leptophyllum B. Corbin 2002-10-2 1114 Lassen East of Highway 139, southeast of Eagle Lake 1731.3 Comment
  CHSC66862  Chenopodium rubrum var. humile Vernon H. Oswald; Lowell Ahart 1996-9-10 8279 Lassen Mountain Meadows Reservoir SW of Westwood. On the embankment of the railroad at the northwest edge of the reservoir. 1539 Comment
  CHSC45516  Chimaphila menziesii Lowell Ahart; John Thomas Howell 1974-7-9 538 Lassen On the south side of Eagle Lake Road, near the south edge of Eagle Lake. 1584 Comment
  CHSC6235  Chimaphila menziesii P. Balch 1955-7-22 Lassen Eagle Lake. Between Eagle Lake and Pittville road. 1676 Comment
  UC1557992  Chimaphila menziesii Barbara Ertter 1988-7-25 7872 Lassen ca. 10 airmiles due s. Susanville (ridge of Diamond Mts., ca. 1.5 mi. e. of Diamond Peak); Diamond Mts. 2255 Comment
  CDA36350  Chrysothamnus nauseosus B. Villegas 2011-8-25 Lassen Highway 395 just above Doyle. 0 Comment
  CHSC42146  Chrysothamnus viscidiflorus subsp. viscidiflorus C. E. Laver 1985-8-14 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. Along roadsides. 2194 Comment
  HSC5341  Chrysothamnus viscidiflorus subsp. viscidiflorus M. T. Milligan 1964-8-6 196 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS94839  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald and Lowell Ahart 1998-9-8 9587 Lassen Kramer Road 3.1 mi s of Lookout; Kramer Road 1280 Comment
  OBI5967  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 mi from Bieber on the road to Alturas 1268 Comment
  SEINET7450943 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus M. J. Williams 1974-7-29 1974 -L-56 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  SEINET7451023 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1994-9-13 2430 Lassen Just above gate along road to Fredonyer Peak lookout 2256 Comment
  UC773960  Chrysothamnus viscidiflorus subsp. viscidiflorus L. R. Short and Wm. Gansberg 1936-8-13 S- 494 Lassen Burgess Spring Experiment Range 1770 Comment
  UC921129  Chrysothamnus viscidiflorus subsp. viscidiflorus Vesta Holt 1945-8-11 Lassen Eagle Lake Comment
  CAS-BOT-BC162756  Chylismia claviformis subsp. cruciformis P. Monnet 1913-7-1 816 Lassen Hot Springs Peak Comment
  CHSC5034  Cichorium intybus L. B. Barlow 1967-7-6 108 Lassen 2 mi. west Murrer's Ranch turn off, 14.9 mi. north of Susanville, Calif., Highway 139. 1463 Comment
  CDA38210  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CAS-BOT-BC184828  Cinna latifolia Clare B. Hardham 1971-8-22 18408 Lassen Diamond Mountain. 2133 Comment
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UC1037245  Cirsium andersonii Leo Whitney 1933-8-8 1994 Lassen near Poison lake, ca 23 m w (of Eagle Lake) Eagle Lake; Poison Lake 1828 Comment
  UCR67462  Cirsium arvense George K. Helmkamp 1990-9-23 A- 01 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC277918  Cirsium canescens T. C. Fuller 1966-7-22 14981 Lassen E. of rd. at e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CDA1125  Cirsium canescens T. C. Fuller 1962-8-28 9479 Lassen 0.25 mi n. of Termo, Madelaine Plains; roadside, Hwy 395 to Madelaine. 0 Comment
  CDA1167  Cirsium cymosum T. C. Fuller 1959-7-7 2763 Lassen Hwy 395; 1 mile north of Ravendale. 0 Comment
  CAS-BOT-BC278001  Cirsium cymosum John Thomas Howell 1934-6-10 11908 Lassen Madeline Plains near Termo Comment
  CAS-BOT-BC278002  Cirsium cymosum Peter H. Raven; Otto T. Solbrig 1958-6-17 13279 Lassen Along United States Highway 395, 13.1 miles south of Ravendale Comment
  RSA0070595  Cirsium cymosum Michael A. Vincent 1999-6-9 8575 Lassen Bureau of Land Management land, Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), S of BLM road 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  CAS-BOT-BC280421  Cirsium ochrocentrum T. C. Fuller 1980-8-5 20311 Lassen East shore of Dodge Reservoir, 28 km. (17.5 mi.) northeast of Ravendale Comment
  CAS-BOT-BC280422  Cirsium ochrocentrum Lee Wheeler 1950-10-1 s.n. Lassen Clarence Hoffman Ranch Comment
  CAS-BOT-BC280438  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 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-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
  CDA1561  Cirsium scariosum var. americanum T. C. Fuller 1959-7-6 2979 -B Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  CAS-BOT-BC439003  Cistanthe monosperma Milo S. Baker 1894-7-12 s.n. Lassen Pine Creek Comment
  CAS-BOT-BC172038  Clarkia gracilis subsp. gracilis Louella Bass 1973-5-29 EV 79 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC66393  Clarkia gracilis subsp. gracilis Vernon H. Oswald; Lowell Ahart 1996-6-17 7792 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Just SW of the parking area at Devils Corral Trailhead. 1420 Comment
  JEPS108589  Clarkia gracilis subsp. gracilis L. P. Janeway 2005-7-4 8465 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41 1752 Comment
  CAS-BOT-BC163166  Clarkia lassenensis G. Schoolcraft 1993-6-29 2308 Lassen Ash Valley RNA between Adin & Madeline 1554 Comment
  CAS-BOT-BC172562  Clarkia purpurea subsp. purpurea John Thomas Howell 1974-7-10 50550 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CAS-BOT-BC163420  Clarkia purpurea subsp. quadrivulnera Louella Bass 1978-7-11 78 -12 Lassen Elysian Valley 1325 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
  CAS-BOT-BC164865  Clarkia rhomboidea Bill Wilson 1967-7-1 8 Lassen On Rd. # 5.00, 2.5 mi. S of Eagle Lake Biological Station. 8 mi. N of Susanville 1645 Comment
  CAS-BOT-BC164867  Clarkia rhomboidea Louella Bass 1978-6-10 78 -1 Lassen Elysian Valley 1325 Comment
  JEPS43672  Clarkia rhomboidea Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  UC1587045  Clarkia rhomboidea G. Schoolcraft 1991-7-30 2194 Lassen e side Widow Mountain 1889 Comment
  SBBG12321  Claytonia rubra subsp. rubra A. I. Richardson 1961-5-30 6 Lassen rd S of Eagle Lake 1402 Comment
  CHSC64778  Cleome platycarpa Vernon H. Oswald 1995-5-31 6805 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  CHSC7714  Cleome platycarpa Beverly J. Wise 1969-5-3 4 Lassen 4.7 mi east of junction of Hwy 395 on las. Co. Rd. 338 (Smoke Creek Rd.) 1554 Comment
  JEPS79145  Cleome platycarpa L. R. Heckard with R. Bacigalupi 1980-6-11 5248 Lassen 11.3 mi. n. Litchfield (along U.S. 395, s. of Deep Creek crossing) 1463 Comment
  UC1567389  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen e end Skedaddle Mtns. (near stateline) 1493 Comment
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Aug 12 2008
  NY222741  Cleome platycarpa D. W. McNeal 1978-5-30 2123 Lassen Along Hwy. #395, 3.4 mi. N of the jct of Co. Hwy. #320 (Wendel Rd.) at the Nobel Emigrant Trail Historical Marker. Comment
  NY242421  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 Comment
  CDA25308  Cleomella plocasperma T. C. Fuller 1980-8-6 20324 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  JEPS120877  Collinsia parviflora Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18737 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS95129  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1997-5-27 8500 Lassen North of Susanville (on Forest Rte. 38N04 (between Hwy. 139 near Willow Creek Guard Station & Coyote Flat), 0.1 mi. e. of Hwy. 139, on flood plain of small creek paralleling rd.) 1546 Comment
  RSA60368  Collinsia parviflora E. K. Balls 1950-5-9 15951 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  JEPS17747  Collomia linearis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5407 Lassen 4.4 mi s Patterson Ranger Sta.; southern end of Warner Mountains, Modoc National Forest, Lon 2057 Comment
  JEPS94551  Collomia linearis Vernon Oswald and Lowell Ahart 1997-6-24 8621 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville on n side of Diamond Mountain at an impoundment on edge of Forest Rd 29N43 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 Comment
  CHSC6200  Collomia tinctoria 1946-6-13 Lassen Eagle Lake. 1584 Comment
  CHSC80232  Collomia tinctoria Jeanne Boze 1981-6-12 109 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 Comment
  UC773938  Collomia tinctoria L. R. Short and J. Warren 1936-6-10 S- 382 Lassen Burgess Spring Experimental Range Lassen <National> Forest (timbered slopes) 1789 Comment
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Jun 17 2011
  HSC95148  Comarum palustre Gordon Leppig 1998-7-12 934 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS121290  Conium maculatum Lowell Ahart, John Dittes 2013-7-23 18901 Lassen W side of the road levee, about 80 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  JEPS11645  Cordylanthus ramosus R. F. Hoover 1940-10-1 4655 Lassen Jonesville Comment
  UC581214  Crepis acuminata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1736 Lassen on mountain above Red Rock (e-facing slope of gully) 1420 Comment
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  OBI75880  Crepis bakeri Anthony Baniaga 2011-6-30 404 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1470 Comment
  CAS-BOT-BC291549  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-8 2222 Lassen Six miles south of Ravensdale 1676 Comment
  POM230908  Crepis intermedia G. Ledyard Stebbins, J. A. Jenkins 1937-7-10 2296 Lassen Crest of range head of Stony Ridge, west of Milford 1951 Comment
  CAS-BOT-BC291548  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-7 2203 Lassen Susanville just west of the town on Inspiratin Point Comment
  POM17695  Crepis monticola Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC540880  Crepis occidentalis David D. Keck and J. Clausen 1935-6-25 3759 Lassen Susanville; just w of town 1340 Comment
  UC581195  Crepis occidentalis E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1749 Lassen nw facing slope of ridge e Red Rock 1600 Comment
  UC581290  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2302 Lassen w Milford (crest or range head of ridge); Stony Ridge 1930 Comment
  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-BC290752  Crepis occidentalis subsp. occidentalis John Thomas Howell 1934-6-10 11872 Lassen Janesville Comment
  UC895333  Crepis occidentalis subsp. occidentalis A. A. Heller 1938-6-23 15201 Lassen valley e Fredonyer Pass (on State Hwy 36) Comment
  CAS-BOT-BC290751  Crepis occidentalis subsp. occidentalis David D. Keck; J. Clausen 1935-6-24 3752 Lassen 2 miles south of Ravensdale 1463 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
  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-BC299713  Crocidium Louella Bass 1973-4-22 23 Lassen Elysian Valley, Sierra Nevada 1325 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
  NY1112275  Cryptantha ambigua B. J. Ertter 1987-6-16 7199 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  SDSU20522  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 522 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  CHSC106681  Cryptantha circumscissa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UCD54568  Cryptantha circumscissa Ellen Dean; Dawn Cunningham 2005-10-25 2751 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  UCD55289  Cryptantha flaccida Ellen Dean; Gary Schoolcraft 2006-5-16 3110 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. 1260 Comment
  POM252792  Cryptantha hendersonii A. A. Heller 1938-6-23 15206 Lassen Lassen County the ridge E of Mapes on Hwy 395. 1372 Comment
  RSA0065500  Cryptantha hendersonii Marion P. Harthill 1972-6-17 817 Lassen Ravendale. 1524 Comment
  JEPS94832  Cryptantha pterocarya Vernon H. Oswald and Lowell Ahart 1998-5-22 9112 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0;.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  UC526165  Cryptantha pterocarya John Thomas Howell 1934-6-10 11851 Lassen 4 mi s Omira Comment
  CHSC71075  Cryptantha pterocarya var. pterocarya Vernon H. Oswald; Lowell Ahart 1998-5-22 9112 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  CHSC106073  Cryptantha torreyana Lowell Ahart; John Dittes 2010-7-31 17028 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
  CHSC27925  Cryptantha torreyana M. S. Taylor 1974-7-10 280 Lassen In meadow, ca. 1/2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  SEINET10497287  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 280 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  HSC68930  Cryptantha watsonii Gary Schoolcraft 1980-5-7 219 Lassen On Honey Lake Island 1220 Comment
  JEPS107811  Cryptantha watsonii Lowell Ahart, John Dittes 2005-6-2 11949 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction 1498 Comment
  UC1562813  Cryptantha watsonii Barbara Ertter with Gary Schoolcraft 1987-6-16 7187 Lassen ne side Honey Lake (w of Hot Springs VABM); Skeedaddle Mountains 2133 Comment
  UCR243134  Cuscuta approximata Jerry Schmierer 1986-9-1 s.n. Lassen Don Blickenstaff Ranch 1220 Comment
  CAS-BOT-BC39681  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale. 1737 Comment
  UC193142  Cycladenia humilis var. humilis J. G. Lemmon Lassen near Shasta (Black Cone); ; Black Cone, near Shasta Comment
  CHSC43469  Cynoglossum occidentale Lowell Ahart; John Thomas Howell 1974-7-9 515 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  UC1567429  Cyperus squarrosus G. Schoolcraft 1989-7-24 1994 Lassen along n. shore Said Valley Reservoir 1630 Comment
  SEINET7725892  Cypripedium californicum Unknown Lassen Mt. Dyer 1829 Comment
  CHSC27716  Cystopteris fragilis Robert A. Schlising 1978-7-9 3315 Lassen S of Eagle Lake, rocks on E side of Mahogany L. 2060 Comment
  SEINET230899 Image available Dalea ornata Arnold Tiehm, Raymond Evans: James Young 1984-6-7 8592 Lassen Flats on the Northwest side of Shaffer Mountain, 7.5 air miles North-northwest of Litchfield. 1372 Comment
  JEPS127244  Damasonium californicum Lowell Ahart, John Dittes 2016-7-13 21138 Lassen 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
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Jul 11 2013
  RSA299133  Danthonia unispicata J. T. Howell 1977-6-22 52406 Lassen west of Susanville near the confluence of Willard Creek and Susan River 1433 Comment
  UCD61329  Danthonia unispicata Beecher Crampton 1960-6-18 5721 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UC1924204  Deinandra lobbii Debra Valov 2005-8-20 2005220 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 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
  JEPS15484  Delphinium andersonii Joseph and Hilda W. Grinnell 1938-6-13 1098 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  POM253334  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along Hwy 395, between Termo and Madeline. 1524 Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  CHSC7728  Delphinium nudicaule Beverley J. Wise 1969-5-9 84 Lassen 11.3 mi. west of Susanville on Forest Serv. 8246 off Hwy 36. 1524 Comment
  CHSC4927  Delphinium nuttallianum L. G. Bennett 1967-6-23 15 Lassen Immediate vicinity of Eagle Lake Biological Station, Eagle Lake. 1554 Comment
  CHSC7732  Delphinium nuttallianum Beverley J. Wise 1969-5-9 85 Lassen 11.7 mi. west of Susanville on Forest Serv. 8246 off Hwy. 36. 1524 Comment
  HSC27052  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19165 Lassen 3 mi. N of Westwood Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  CAS-BOT-BC116043  Delphinium nuttallianum Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass. Comment
  CAS-BOT-BC194258  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1943-7-10 49769 Lassen Near Westwood - Sierra Nevada 1554 Comment
  CAS-BOT-BC194259  Deschampsia cespitosa subsp. cespitosa Ray Hanson 1954-8-23 s.n. Lassen Near Jackey Lake 2112 Comment
  CAS-BOT-BC192740  Deschampsia danthonioides A. A. Beetle 1941-6-28 2799 Lassen 10 miles west of Chester Comment
  JEPS107688  Deschampsia danthonioides Lowell Ahart, John Dittes 2005-6-1 11913 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  JEPS88325  Deschampsia danthonioides Vernon H. Oswald and Lowell Ahart 1996-6-24 7840 Lassen 2.5 mi. s. of Eagle Lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), Papoose Meadows, w. side of meadow just s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  POM114878  Deschampsia danthonioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UCD61878  Deschampsia danthonioides A. A. Beetle 1941-6-28 2799 Lassen 10 miles W of Chester. 1524 Comment
  UCD62833  Deschampsia danthonioides Malcolm A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles N of Madeline. Comment
  RSA268159  Deschampsia danthonioides J. R. Reeder, C. G. Reeder 1972-6-1 5630 Lassen 2 miles S. of Nubieber. 1037 Comment
  SEINET10524169  Deschampsia danthonioides R. Ondricek 1978-7-15 Ondricek 102 Lassen In dried mud where the spring arises above the dam at Murrers Upper Meadow. T32N, R11E, e edge of Sec. 26. in the Fredonyer Peak Quadrangle, 15'. 1548 Comment
  UC1609092  Descurainia incisa subsp. filipes Vernon H. Oswald and Lowell Ahart 1993-7-8 5656 Lassen ne edge Poison Lake (1.9 mi n of Hwy 44, Pittville Rd (Lassen 111, 36N01), ridge between railroad and lake) 1709 Comment
  CDA42999  Descurainia nelsonii L. Ahart, John Dittes 2008-6-19 14891 Lassen West bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  JEPS114360  Descurainia nelsonii Lowell Ahart, John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  SEINET10480969  Descurainia pinnata Jeffrey Huber 1971-6-2 Huber 134 Lassen 6 mi n of halleluja jct on u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC43164  Descurainia pinnata subsp. brachycarpa John Thomas Howell 1976-7-20 52023 Lassen Sierra Nevada. Bottom flatas along Willard Creek near its confluence with Susana River. 1432 Comment
  CHSC64773  Descurainia sophia Vernon H. Oswald 1995-6-7 6840 Lassen Modoc Plateau. Ridge on the n side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi e of Wendel, ne of Susanville. Near the road. 1231 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
  JEPS107794  Descurainia sophia Lowell Ahart 2005-6-2 11925 A Lassen near the Anderson Ranch home, Long Valley, about 4 3/4 air mi N of intersection of Scott Road and Hwy 70, 6.2 air mi NW of Hallelujah Junction 1459 Comment
  UC1924260  Descurainia sophia Debra Valov 2004-5-31 2004227 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC43484  Descurainia sophia Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16334 Lassen 13.5 miles east of Susanville. Comment
  JEPS25534  Dichelostemma multiflorum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7148 Lassen 3.7 mi s Susanville to Adin road junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  CAS-BOT-BC500986  Dichelostemma multiflorum H. D. Ripley; R. C. Barneby 1943-6-14 5750 Lassen West of Susanville 1310 Comment
  HSC63945  Dieteria canescens var. canescens Teresa Prendusi 1980-7-1 Lassen Little Antelope Valley 1677 Comment
  UC1536890  Dieteria canescens var. shastensis G. H. True Jr. 1936-6-25 532 Lassen flats e of Harvey Ranger Station; Harvey Valley 1706 Comment
  UC1609238  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  UC86846  Dieteria canescens var. shastensis T. S. Brandegee Lassen Comment
  CAS-BOT-BC153673  Diplacus mephiticus Clare B. Hardham s.n. Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC153681  Diplacus mephiticus L. G. Bennett 1967-6-23 21 Lassen Eagle Lake Biological Station Grounds 1554 Comment
  CAS-BOT-BC153682  Diplacus mephiticus Margaret Williams; Steven Williams 1974-7-26 74 - L - 35 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC26186  Diplacus mephiticus J. P. Kroessig 1977-5-23 30 Lassen Large scattered population at Eagle Lake Biological Station, ca 37 km nnw of Susanville. 1570 Comment
  CHSC5907  Diplacus mephiticus R. Gein 1946-6-12 Lassen Pine Creek bridge. 1584 Comment
  SEINET13702844  Diplacus mephiticus G. Schoolcraft 1980-5-7 225 B Lassen Honey Lake Island. 1219 Comment
  SEINET13703699  Diplacus mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8673 Lassen Near Old Chat. Comment
  CAS-BOT-BC154007  Diplacus torreyi A. M. Vollmer; L. Beane 1953-7-1 48 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC67075  Distichlis spicata Willis Ball 1969-6-19 11 Lassen Found in dry Eagle Lake basin about 1/2 mile N.E. of E.L.B.S. 1554 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
  UC1137728  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1767 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
  JEPS14618  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (forest adjacent to State Highway 299); Lassen National Forest 1219 Comment
  RSA768782  Downingia bacigalupii L. Ahart, John Dittes 2010-7-31 17013 Lassen About 2300 feet north of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1511 Comment
  UC1368461  Downingia bacigalupii R. K. Gierisch 1969-7-18 3549 Lassen Madeline Plains, near Modoc Forest/Expt. Area Madeline Plains 1615 Comment
  UC1523717  Downingia bacigalupii Gregg Riegel 1981-6-17 1150 Lassen 1280 Comment
  SBBG126109  Downingia bacigalupii L. Ahart, J. Dittes 2010-7-31 17013 Lassen ca 2300 feet N of where rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1510 Comment
  CHSC59527  Downingia bicornuta Mary Meyer 1980-7-9 506 Lassen Horse Camp Springs, down-stream in cow pod. 1706 Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  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
  JEPS108502  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 221 -95 Lassen E edge of Poison Lake. N on Pittville Rd. off of Rt. 44. E of Shasta/Lassen county line. Comment
  JEPS108509  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 223 -95 Lassen Large vernal pool W of Champs Flat (W of Eagle Lake). Corner of 33N56Y and 33N06. Comment
  JEPS108510  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-28 232 -95 Lassen Between Beiber and Adin; SE corner of Rt. 299 and Finley Rd. Comment
  JEPS19680  Downingia insignis Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-28 6000 Lassen 3.1 mi s Madeline (ditches along U.S. Highway 395); Madeline Plains 1615 Comment
  SJSU3191  Downingia insignis R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline, Madeline Plains 1615 Comment
  RSA292991  Downingia insignis Stanton A. Cook 1958-7-19 825 Lassen 7.4 miles N of Ravendale on route 395. Comment
  CAS-BOT-BC266474  Downingia laeta Gordon H. True 1936-6-21 518 Lassen Honey Lake Valley Comment
  UC1192038  Downingia laeta Malcolm A. Nobs and S. Galen Smith 1949-7-20 1047 Lassen Bieber, along Highway 299 Bieber Comment
  UC1951080  Draba verna Debra Valov 2009-4-24 2009011 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  JEPS118282  Draba verna var. aestivalis Lowell Ahart, John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC159715  Drymocallis glandulosa Louella Bass 1977-6-26 77 -5 Lassen Elysian Valley, south of Superdam. 1325 Comment
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS95911  Elaeagnus angustifolia Lowell Ahart 1999-9-13 8223 Lassen on the north side of Mapes Road; about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  JEPS121283  Elatine Lowell Ahart, John Dittes 2013-7-22 18882 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS123975  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20299 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA252429  Elatine californica R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39136 Lassen Said Valley Reservoir. Comment
  CAS-BOT-BC113591  Eleocharis acicularis John Thomas Howell 1959-9-23 34892 Lassen Juniper Lake camp grounds, Lassen Park 2057 Comment
  UC1776679  Eleocharis macrostachya G. Schoolcraft 1995-5-22 2485 Lassen East of Skedaddle Ranch 1554 Comment
  CAS-BOT-BC112847  Eleocharis macrostachya Hans Leschke 1959-8-2 1588 Lassen Manzanita Lake 1781 Comment
  UCD55302  Eleocharis parvula Ellen Dean; Gary Schoolcraft 2006-5-16 3131 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1251 Comment
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Oct 5 2010
  UC1142965  Eleocharis quinqueflora A. L. Hormay 1941-6-25 19 Lassen Burgess Spring Lassen National Forest 1676 Comment
  UCD62904  Elymus X saundersii Lester J. Berry 1960-7-8 Lassen Burgess Springs Road, floor of Harvey Valley, ca. 7 miles S of Black's Mtn. Exper. Station, USDA. Comment
  HSC5270  Elymus cinereus M. T. Milligan 1964-8-6 197 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS123868  Elymus cinereus Lowell Ahart, John Dittes 2015-7-14 20327 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-BC227482  Elymus elymoides John Thomas Howell; Gordon H. True 1973-8-1 50197 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CAS-BOT-BC227488  Elymus elymoides John Thomas Howell 1934-7-10 12533 Lassen Between Harvey Valley and Patterson Flats Comment
  CAS-BOT-BC227489  Elymus elymoides David D. Keck; J. Clausen 1935-6-24 3751 Lassen 2 mi. S. of Ravendale 1464 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
  UC1024956  Elymus elymoides subsp. elymoides Leo Whitney 1935-6-24 3305 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  JEPS126479  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-30 CA 350 -043 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  CHSC112796  Elymus glaucus Lowell Ahart; John Dittes 2013-7-23 18893 Lassen About 30 feet northeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC7793970  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
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Aug 1 2007
  CAS-BOT-BC206730  Elymus glaucus subsp. glaucus Clare B. Hardham 1971-8-22 18401 Lassen Aspen Swamp, Diamond Mountain 2133 Comment
  CAS-BOT-BC234094  Elymus multisetus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49447 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  UCR17282  Elymus spicatus Frank C. Vasek 1975-7-11 750711- 32 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UC1037126  Elymus trachycaulus Leo Whitney 3261 b Lassen Fruit Grower's Supply Co. Camp 10 Lassen National Forest (dry creek) 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
  CDA2066  Elytrigia repens H. S. Milton, P. Milton Jul 1980 Lassen Herman S. & Paul Milton Ranch, Riverside District, Hwy 395, 8 miles east of Susanville. 0 Comment
  CAS-BOT-BC81879  Ephedra viridis Doris Kildale Gillespie 1930-5-12 9347 Lassen between Susanville and Leavitt Lake Comment
  CHSC111258  Ephedra viridis L. P. Janeway; B. Castro 2012-7-3 10940 B 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
  CHSC93239  Ephedra viridis John Dittes; Scott Chamberlain 2004-6-28 1022 Lassen Modoc Plateau; Long Valley; ca. 5.5 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.5 air-miles west of Hwy 395, ca. 1.3 air-miles east of Plumas County line; near meadow edge. 1496 Comment
  SEINET10532271  Ephedra viridis Mary Susan Taylor 1982-5-29 Taylor 4563 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  SEINET11739305  Ephedra viridis M. Sacks, Detzer 1977-1 13 Lassen 4 km S of Hwy 395 1386 Comment
  SEINET6628957 Image available Epilobium A. W. Harvilik 1967-1 4 Lassen jct. of 5.19 with road to Mutters Meadow 152 Comment
  SEINET10738966  Epilobium angustifolium subsp. circumvagum Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 838 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CHSC29866  Epilobium brachycarpum Robin L. Ondricek 1978-6-27 72 Lassen .6 mi n of Five Corners along road to ELFS. 1706 Comment
  SEINET12539614  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  CHSC6190  Epilobium ciliatum subsp. ciliatum P. Balch 1955-7-24 Lassen Gallatin's Beach, Eagle Lake. 1561 Comment
  JEPS39248  Epilobium ciliatum subsp. ciliatum Brown and Wieslander 1922-7-30 16 Lassen Martin Sprs. Eagle Lake Comment
  NY1001463  Epilobium ciliatum var. ciliatum G. Schoolcraft 1990-7-11 2108 Lassen McKabe Spring north of Moon Lake 1669 Comment
  RSA0105579  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC59090  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5183 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Bottom of a cutbank of the creek where it enters the lake. 1853 Comment
  UC303068  Epilobium glaberrimum subsp. glaberrimum Pearl Safford Lassen Susanville [uncertain locality] Comment
  CHSC66251  Epilobium hallianum Vernon H. Oswald; Lowell Ahart 1996-6-24 7849 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  JEPS88515  Epilobium hallianum Vernon H. Oswald and Lowell Ahart 1996-6-24 7849 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  RSA123006  Epilobium hallianum L. R. Short, J. Warren 1936-6-11 S- 429 Lassen Burgess Spr. Exp. Range 1738 Comment
  CHSC96725  Epilobium oregonense Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 527 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  SEINET3271523 Image available Epilobium oregonense Marcus E. Jones 1897-6-30 Lassen 4 mi below Eagle Lake 1524 Comment
  GMDRC6955  Epilobium pallidum J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31430 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  SEINET194973  Epilobium pallidum A. A. Heller 1938-7-28 15295 Lassen Edge of swamp about mile east of Westwood 1524 Comment
  HSC95345  Epilobium palustre Gordon Leppig 1998-8-17 1049 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC12494  Equisetum arvense Carol Weld 1969-6-26 46 Lassen 7.8 miles S. W. of Eagle Lake Field Station. 1584 Comment
  CDA34254  Eragrostis pectinacea var. pectinacea L. Ahart, J. Dittes 2010-8-31 17092 Lassen On the west side of Walters Road, 4235 feet south of Modoc County Line, about 4.3 miles (air) south-southwest of Adin, and about 7.0 miles (air) northeast of Bieber, Big Valley. Comment
  UC1178959  Eriastrum signatum Herbert L. Mason 1957-7-5 14714 Lassen s Madeline; Madeline Plains Comment
  CAS-BOT-BC515169  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen Near Plumas Junction Comment
  CAS-BOT-BC515171  Eriastrum signatum Lewis S. Rose 1934-7-25 34410 Lassen Reno Jct. 1371 Comment
  CAS-BOT-BC515172  Eriastrum signatum Louella Bass 1982-6-20 s.n. Lassen At cemetery gate, McKeasick Comment
  NY1012897  Eriastrum sparsiflorum var. sparsiflorum R. R. Halse 2004-6-21 6669 Lassen At Junction of U.S. Highway 395 and State Road A 26 ca. 11 miles southeast of Milford 1274 Comment
  JEPS69071  Eriastrum wilcoxii W. L. Jepson 1918-8-2 7792 Lassen Long Valley 1219 Comment
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Nov 7 2008
  UC506538  Eriastrum wilcoxii J. Burtt Davy Jun 17 1897-Jun 24 1897 3408 Lassen Amedie Honey Lake Valley Comment
  UCD149881  Eriastrum wilcoxii William Anderson 1963-6-26 s.n. Lassen Honey Lake. Comment
  CAS-BOT-BC286604  Ericameria bloomeri R. K. Gierisch; D. H. Esplin 1969-8-27 3598 Lassen Lassen National Forest Comment
  CAS-BOT-BC286605  Ericameria bloomeri M. S. Taylor; B. Hammond 1982-8-27 5054 Lassen Crystal Peak area, Diamond Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  SEINET195495  Ericameria bloomeri G. Thomas Robbins 1945-10-7 2153 Lassen Lassen National Forest ; Southeast slope of Harvey Mountain 2-3 miles northeast of Burgess Spring Harvey Valley 1829 Comment
  CAS-BOT-BC298173  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 2401 Lassen 0.75 mile E of Termo 1645 Comment
  CAS-BOT-BC298181  Ericameria nauseosa var. oreophila Carl 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
  CHSC65293  Ericameria nauseosa var. oreophila Vernon H. Oswald; Lowell Ahart 1995-8-14 7181 Lassen Modoc Plateau. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville. Along this section of highway. 1359 Comment
  JEPS21524  Ericameria nauseosa var. oreophila W. L. Jepson 1918-8-4 7808 Lassen Horse Lake 1554 Comment
  OBI5746  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-5 2401 Lassen 3/4 mi E of Termo 1646 Comment
  SJSU3012  Ericameria nauseosa var. oreophila J. W. Tilden 1967-8-23 1771 Lassen Litchfield, southeastern Lassen County Comment
  CAS-BOT-BC294184  Ericameria nauseosa var. speciosa Louella Bass 1973-9-4 EV 133 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC294185  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50696 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC294187  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50217 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  UC761817  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  UC773959  Ericameria nauseosa var. speciosa L. R. Short 1936-9-14 S- 503 Lassen Burgess Spring Experiment Range Lassen Forest 1761 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
  RSA121426  Erigeron aphanactis E. Sawyer 1935-6-27 238 Lassen Long Valley 1341 Comment
  RSA517336  Erigeron aphanactis Barbara Ertter, Gary Schoolcraft 1987-6-16 7176 Lassen Skeeadaddle Mtns on the NE side of Honey Lake. E side of road over saddle on W side of range. 1646 Comment
  CHSC105254  Erigeron bloomeri var. bloomeri Lowell Ahart; John Dittes 2010-7-31 17010 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
  CHSC4947  Erigeron bloomeri var. bloomeri R. Carter 1967-6-23 545 Lassen Growing 10 yds off s side rd. Comment
  CHSC64864  Erigeron bloomeri var. bloomeri Vernon H. Oswald 1995-6-26 6917 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  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
  JEPS89690  Erigeron bloomeri var. bloomeri Dean Wm. Taylor with Glenn Clifton 1990-6-12 10878 Lassen Forest Road 39N08 just as the road enters the valley as traveling from Adin (Ash Valley, Modoc Plateau); Modoc Plateau, Ash Valley, Forest Road 39N08 1554 Comment
  POM33272  Erigeron bloomeri var. bloomeri Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1136834  Erigeron bloomeri var. bloomeri George A. Fischer and Irwin H. Johnson 1933-7-12 F 217 Lassen Lassen National Forest 1722 Comment
  UC1536740  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-27 559 Lassen near top Hot Spring Mt. 1828 Comment
  CAS-BOT-BC294486  Erigeron bloomeri var. bloomeri Clarence R. Quick 1964-7-29 64 -90 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CAS-BOT-BC297144  Erigeron concinnus var. concinnus Ella Dales Cantelow 1940-5-31 3086 Lassen e. of Bieber 1219 Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline Comment
  CAS-BOT-BC295979  Erigeron divergens Clare B. Hardham 1969-8-28 17421 Lassen West of Janesville, Sierra Nevada Comment
  CHSC75455  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1999-6-9 9748 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Below the dam of the reservoir. 1353 Comment
  CAS-BOT-BC295978  Erigeron divergens Gary Schoolcraft 1984-9-4 1372 Lassen Fredomyer Mtn. 1737 Comment
  JEPS1207  Erigeron eatonii var. plantagineus Milo S. Baker 1952-5-23 12433 Lassen Hwy 36 1/2 mi w Fredonyer Pass 1752 Comment
  POM32997  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA0049606  Erigeron eatonii var. plantagineus Dean Wm. Taylor 2012-6-6 21226 Lassen ca. 5 air miles West of Susanville, site is 1 mile due north of the junction of Highway 44 and Highway 36 1877 Comment
  UC87591  Erigeron eatonii var. plantagineus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UCD131889  Erigeron eatonii var. plantagineus Jack Major 1966-6-24 s.n. Lassen Long Valley, 3 miles airline southwest of Patterson Guard Station, northeastern county. 2087 Comment
  CAS-BOT-BC300426  Erigeron elegantulus Mrs. C. C. Bruce 1898-6-1 2182 Lassen Madeline Plains Comment
  JEPS95131  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  RSA0049607  Erigeron elegantulus Dean Wm. Taylor 2012-6-7 21227 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  CHSC57259  Erigeron filifolius var. filifolius Mary Meyer 1980-7-16 Lassen Above bank of Willow Creek. 1463 Comment
  CAS-BOT-BC295180  Erigeron inornatus Clarence R. Quick 1964-8-5 64 -97 Lassen Cal Mt. east of Poison Lake 1767 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
  RSA712921  Erigeron inornatus var. inornatus L. P. Janeway 2005-8-27 8522 Lassen High Cascade Range. Along Road 22, 11.3 road km east of Little Valley; above Davis Creek. 1460 Comment
  RSA719702  Erigeron inornatus var. inornatus Michael A. Vincent, K. Levings 2006-7-29 12910 Lassen Along Rt. 36, 14.3 miles west of Susanville. Comment
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Feb 21 2013
  CAS-BOT-BC295471  Erigeron lassenianus var. lassenianus Lassen 1927 G. S. Crew 1927-6-25 34 Lassen Lassen National Forest. Norval Flat 1747 Comment
  CAS-BOT-BC295472  Erigeron lassenianus var. lassenianus Parkison 1916-6-21 40 Lassen Lassen National Forest. Near Patterson Cabin 1706 Comment
  CHSC67165  Erigeron linearis James D. Jokerst 1991-5-29 3314 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  POM39968  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CDA19737  Erigeron pumilus D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC14070  Erigeron pumilus var. intermedius K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5812 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  HSC81807  Erigeron pumilus var. intermedius Thomas W. Nelson, Jane Nelson 1980-7-6 6029 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
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UC1567402  Erigeron pumilus var. intermedius G. Schoolcraft 1989-6-19 1916 Lassen Ash Valley RNA/ACEC , Susanville 1554 Comment
  UCD18963  Erigeron pumilus var. intermedius R. E. Francis 1965-7-7 8 Lassen Lassen National Forest, Harvey Valley Allotment. 1737 Comment
  NY399607  Eriogonum baileyi var. baileyi E. K. Balls 1952-10-10 18139 Lassen 5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas 1280.2 Comment
  SJSU13948  Eriogonum baileyi var. praebens N. A. Hopkins 1986-8-28 1381 Lassen County Rd 33 (Scott Rd), lower Long Valley N of Hwy &0 & E of Beckwourth Pass Comment
  CAS-BOT-BC241878  Eriogonum cernuum R. F. Hoover 1940-10-5 4667 Lassen Wendel 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
  NY242509  Eriogonum collinum A. A. Heller 1938-6-23 15208 Lassen On U.S. Highway #395 about midway between Mapes and Secret Valley. Comment
  SEINET6332092  Eriogonum collinum A. J. Cronquist, A. H. Holmgren 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615 Comment
  UC1477728  Eriogonum collinum Gary Schoolcraft 1979-6-19 73 Lassen n, along road Big Spring 1676 Comment
  UC762697  Eriogonum collinum R. F. Hoover 1940-9-29 4645 Lassen low pass between Shaffer Mt. and Warren Peak Comment
  SEINET5328978  Eriogonum collinum N. H. Holmgren, James Lauritz Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 iles south of Ravendale, Comment
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  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
  UC1305802  Eriogonum maculatum Noel H. Holmgren, James L. Reveal 1964-8-22 1724 Lassen 18 mi s along U.S. 395 Ravendale (35 mi ne of Susanville) Comment
  UC1533147  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 0.1 mi w along Smoke Creek Road CA-NV stateline 1341 Comment
  SEINET10299463  Eriogonum maculatum W. L. Jepson 1918-8-5 Lassen Madelin Plains 1615 Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  UC1523724  Eriogonum microthecum var. ambiguum Gary Schoolcraft 1982-8-18 898 Lassen s Doyle Grade Road (w of Doyle) 1584 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
  JEPS127634  Eriogonum nudum Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -154 Lassen Likely Mtn. on road 171. Collecting site is a 100-300 m before reaching the Forest Service Boundary. Comment
  JEPS128413  Eriogonum nudum Catherine Bauer with Ellen Bauer Benson 2017-8-16 19 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  SD132453  Eriogonum nudum G. Helmkamp 1990-9-23 G 11 Lassen Sagebrush scrub area N of Ravendale. Riparian area beside small creek 1676 Comment
  SEINET530760  Eriogonum nudum var. deductum Paul Opler 2008-8-6 Lassen West of Milford, nr. Laufman Campground. Comment
  SJSU9529  Eriogonum nudum var. deductum J. W. Tilden 1960-6-27 1492 Lassen Westwood 1524 Comment
  CAS-BOT-BC261445  Eriogonum nudum var. nudum Clare B. Hardham 1969-8-28 17442 Lassen West of Janesville Comment
  CHSC105258  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-7-31 16983 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC106170  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-8-30 17088 Lassen South side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CHSC67061  Eriogonum nudum var. pubiflorum Willis Ball 1969-6-27 50 Lassen Found about 50 yds. S. of Gallatin Beach. Growing beside Gallatin Beach Parking Lot. 1561 Comment
  UC1137674  Eriogonum nudum var. pubiflorum L. R. Short and Wm. Gansberg 1936-7-3 S- 474 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  HSC68914  Eriogonum nudum var. pubiflorum Gary Schoolcraft 1979-7-3 117 Lassen 1.0 mi. NW of rest area on Hwy. 395 1570 Comment
  POM105327  Eriogonum ochrocephalum var. ochrocephalum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC72220  Eriogonum ovalifolium var. depressum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 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
  UC54767  Eriogonum ovalifolium var. ovalifolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee Honey Lake Valley, Amadee Comment
  POM203845  Eriogonum spergulinum var. reddingianum J. T. Howell 1934-7-6 12446 Lassen Harvey Valley Comment
  UC6621  Eriogonum spergulinum var. reddingianum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  POM165475  Eriogonum sphaerocephalum Geo. D. Butler 1910-5-20 1371 Lassen Dry rocky hill, Yreka. Comment
Read comments
Apr 25 2013
  CHSC57304  Eriogonum sphaerocephalum var. halimioides Mary Meyer 1980-7-9 Lassen One mile northwest of Horse Camp Spring. Meadow. 1706 Comment
  CHSC68755  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald; Lowell Ahart 1997-5-27 8491 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  JEPS93796  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen 2.7 mi se of Highway 36 (Shugru Reservoir in Bass Hill [WA] on Highway 395 between Susanville and Janesville); Shugru Reservoir, Bass Hill 1243 Comment
  UC1032330  Eriogonum sphaerocephalum var. halimioides A. Simontacchi 1940-7-8 923 Lassen 5.1 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS56418  Eriogonum sphaerocephalum var. sphaerocephalum Hilda W. Grinnell 1934-5-31 Lassen near Susanville (mouth of Piute Creek Canyon); Piute Creek Canyon Comment
  UC726566  Eriogonum sphaerocephalum var. sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen s Secret Valley (on U. S. Highway #395) 1371 Comment
  NY283383  Eriogonum strictum G. Schoolcraft 1985-6-12 1422 Lassen Near intersection of Horse Lake Road & Highway 139 1487.4 Comment
  NY283175  Eriogonum strictum subsp. proliferum W. W. Eggleston 1911-7-7 7173 Lassen Secret Valley 1330 Comment
  NY283239  Eriogonum strictum subsp. proliferum H. D. D. Ripley 1943-6-13 5711 Lassen South of Johnstonville 1325.9 Comment
  NY762353  Eriogonum strictum var. anserinum J. T. Howell 1934-7-7 12478 Lassen Harvey Valley Comment
  UC1924216  Eriogonum strictum var. anserinum Debra Valov 2004-6-9 2004268 Lassen Bieber; off County A2 c. 12 km E of Hwy 299 1270 Comment
  CAS-BOT-BC267890  Eriogonum umbellatum A. A. Heller 1938-6-23 15202 Lassen West of Susanville Comment
  JEPS127724  Eriogonum umbellatum Alejandro Brambila, Michael Dolan 2016-8-2 CA 320 -181 Lassen Head north on unnamed road west of Holbrook Reservoir from Ash Valley Road. Comment
  SEINET8513574  Eriogonum umbellatum O. Schilling, M. Gray, S. Jesselson, A. Rosenblum 2015-7-16 NV 030 -1125 Lassen Constantia Allotment, South on Red Rock Road until reach Highway 395, head South, second left into allotment, halfway up first hill 1469 Comment
  RSA0025577  Eriogonum umbellatum John F. Emmel 1996-7-14 1427 Lassen At Hwy 395 crossing of Secret Creek, on slope 0.1-0.2 air mi SSE of the crossing, 2.7 road mi north of Karlo Road junction. Comment
  CHSC4436  Eriogonum umbellatum var. modocense K. R. Stern 1967-7-1 2461 Lassen Ca. 16 mi. NE of Susanville. State Hwy 139. Comment
  CHSC6227  Eriogonum umbellatum var. modocense A. Santos 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  JEPS114751  Eriogonum umbellatum var. modocense Lowell Ahart, John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC1537274  Eriogonum umbellatum var. modocense Gordon H. True Jr. 1936-6-25 536 Lassen e Harvey Ranger Station; Harvey Valley 1706 Comment
  CAS-BOT-BC265092  Eriogonum umbellatum var. nevadense John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50673 Lassen Summit ridge of Diamond Mt., Sierra Nevada 2346 Comment
  CAS-BOT-BC265099  Eriogonum umbellatum var. nevadense Mrs. E. C. Van Dyke 1931-6-13 s.n. Lassen Kelly Camp, Mt. Lassen Natl. Park Comment
  CHSC111254  Eriogonum umbellatum var. nevadense L. P. Janeway; B. Castro 2012-7-3 10937 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
  NY399279  Eriogonum umbellatum var. nevadense L. Bass 1983-6-10 383 Lassen About 3 miles east of Susanville, Center Road near Leavitt lane Comment
  NY399398  Eriogonum umbellatum var. nevadense H. D. D. Ripley 1943-6-13 5713 Lassen South of Johnstonville 1325.9 Comment
  POM105088  Eriogonum umbellatum var. nevadense Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  POM253245  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Grassy, gravelly slope between Secret Valley and Ravendale. 1524 Comment
  UC1032270  Eriogonum umbellatum var. nevadense H. P. Hagge 1929-9-11 22 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  CAS-BOT-BC265098  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-12 1 -83 Lassen On Sears Road near Janesville, Sierra Nevada Comment
  CAS-BOT-BC262364  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC262365  Eriogonum vimineum Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC262367  Eriogonum vimineum John Thomas Howell 1976-7-19 51952 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CHSC4981  Eriogonum vimineum R. Clicquennoi 1967-6-24 32 Lassen On the approaches to Murrer's Upper Meadow 4 mi e of Eagle Lake Biology Station. 1524 Comment
  JEPS117563  Eriogonum vimineum Lowell Ahart, John Dittes 2010-7-31 17018 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS97409  Eriogonum vimineum Vernon H. Oswald and L. Ahart 1995-6-19 6882 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395 1371 Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  UC6518  Eriogonum vimineum M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC767818  Eriogonum vimineum R. F. Hoover 1940-10-5 4672 a Lassen pass between Shaffer Mt. and Warren Peak Comment
  SDSU7202  Eriogonum vimineum D. F. Howe 1960-9-21 2994 Lassen 2.0 Miles north of Janesville. 1219 Comment
  SEINET3160096  Eriogonum vimineum subsp. vimineum L. S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  CHSC96443  Eriophorum gracile Gordon Leppig; T. LaBanca, L. Arguello 1997-6-28 508 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  CHSC67057  Eriophyllum lanatum Willis Ball 1969-6-19 9 Lassen Found approx. 1/2 mile N. of E.L.B.S. Near old Eagle Lake basin. 1584 Comment
  RSA647564  Eriophyllum lanatum Marion P. Harthill 1971-6-20 205 Lassen Susanville Comment
  CAS-BOT-BC308138  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  UC896366  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen on a ridge e Fredonyer Pass (on Highway #36) 1645 Comment
  CAS-BOT-BC308139  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-29 64 -85 Lassen Blacks Mt. Experivmental Forest 1798 Comment
  SEINET8687254 Image available Eriophyllum lanatum var. achilleoides J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  JEPS117575  Eriophyllum lanatum var. grandiflorum Lowell Ahart, John Dittes 2010-7-31 17024 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  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
  PASA2212  Eriophyllum lanatum var. integrifolium Frank W. Peirson 1926-6-24 Lassen Several miles southward from the Madeline Plain Comment
  POM66833  Eriophyllum lanatum var. integrifolium Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UC1368789  Eriophyllum lanatum var. integrifolium John L. Strother 1970-5-23 956 Lassen about 6 mi n Honey Lake 1280 Comment
  UC507013  Eriophyllum lanatum var. integrifolium George A. Fischer and Irwin H. Johnson 1933-7-12 F- 200 Lassen Grass Valley Lassen National Forest, Grass Valley 1697 Comment
  UC1487306  Eryngium alismifolium Yusuf Sheikh and Lincoln Constance 550 Lassen U.C. Botanical Garden; ; alongside State Highway 395, 4.1 miles NNW of Termo, Madeline Plains Comment
  UC21010  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3374 Lassen Honey Lake Valley Comment
  CDA38324  Eryngium articulatum Wheeler 1953-9-22 s.n. Lassen [no additional info] 0 Comment
  RSA121673  Erysimum capitatum var. capitatum L. R. Short, B. H. Short 1936-6-15 S- 437 Lassen Lassen Forest. Longs Well. 1713 Comment
  UC585097  Erysimum capitatum var. capitatum E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1766 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  UC1184056  Erysimum perenne Jean Langenheim 1957-6-26 4398 Lassen from areas adjacent to 1937 chaparral quadrat (nw part of valley); Said Valley Comment
  CAS-BOT-BC55196  Erysimum repandum John Thomas Howell 1934-6-10 11904 Lassen 3 miles south of Ravendale. Comment
  CAS-BOT-BC55197  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  CHSC66267  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1996-6-24 7866 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
  CAS-BOT-BC151473  Erythranthe latidens James Jokerst 1983-7-23 1872 Lassen Grasshopper Valley Quad., near Madeline Plains 1614 Comment
  CHSC5010  Erythranthe primuloides L. G. Bennett 1967-7-7 112 Lassen Deans Meadow, near Eagle Lake. 1706 Comment
  POM260456  Erythranthe pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 Comment
  CAS-BOT-BC403150  Eschscholzia californica A. M. Vollmer; L. Beane 1953-7-1 103 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC312018  Eucephalus breweri Clare B. Hardham 1971-8-22 18390 Lassen Diamond Mountain 2133 Comment
  SEINET8506929  Euphorbia crenulata D. W. Taylor 2008-5-14 20198 Lassen Unnamed flat about 2 air miles SSE of Poison Butte 1768 Comment
  UCD39131  Euphorbia crenulata Beecher Crampton 1964-6-25 7072 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  JEPS97418  Euphorbia spathulata Vernon H. Oswald and L. Ahart 1995-6-19 6881 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  JEPS127347  Euphorbia virgata Lowell Ahart, John Dittes 2016-7-13 21118 Lassen 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS100337  Eurybia integrifolia Dean W. Taylor 2001-7-19 17843 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  CAS-BOT-BC312105  Eurybia integrifolia Alice Eastwood 1912-8-22 1914 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  UC1192257  Euthamia occidentalis Malcolm A. Nobs, S. Galen Smith 1949-8-20 1488 Lassen 1 mi s of Doyle; Long Creek Comment
  UCR17280  Festuca idahoensis Frank C. Vasek 1975-7-11 750711- 31 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC278433  Festuca idahoensis Clarence R. Quick 1962-6-17 62 -30 Lassen Western Pacific RR., S. of Halls Flat, Susanville-Pittville road near Blacks Mt. Experimental Station 1706 Comment
  UC1024937  Festuca occidentalis Leo Whitney 1935-6-27 3337 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC53432  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
Read comments
Jun 24 2009
  UC53777  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen near Bieber; Big Valley Comment
  JEPS28299  Festuca rubra George W. Gillett 1957-7-29 947 Lassen between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  JEPS28300  Festuca rubra George W. Gillett 1957-7-28 923 Lassen upper end Butte Lake (trail to Widow Lake above junction w/ Snag Lake trail, dry wash 100 yds. above trail junction); Lassen Volcanic Nat'l Park, Butte Lake 1859 Comment
  UC1024944  Festuca rubra Leo Whitney 1935-6-27 3327 Lassen 1 mi n Camp 10, Fruit Grower's Supply Company; Lassen National Forest Comment
  CAS-BOT-BC282537  Festuca viridula Parkison 1916-6-16 27231 Lassen North slope Crater Mountain, Lassen forest 1767 Comment
  JEPS28492  Fragaria virginiana George W. Gillett 1957-7-22 884 Lassen s end Snag Lake (near campsite); Lassen Volcanic National Park 1850 Comment
  SEINET10852446  Frangula rubra Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 156 Lassen Lassen National Forest. 5.6 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1980 Comment
  HSC26684  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19220 Lassen 3 mi. N of Westwood Comment
  RSA59815  Fritillaria atropurpurea E. K. Balls 1950-5-19 14769 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  CHSC60698  Fritillaria pudica Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5274 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  HSC79827  Fritillaria recurva William E. Rodstrom 1975-5-23 Lassen Near Day in most NW township of Lassen, 0.5 mi. E of Cinder Pit Mine, N of Hwy. 299 1280 Comment
  RSA367755  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 1067 Comment
  CHSC4902  Galium aparine Bill Wilson 1967-6-23 18 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville. 1584 Comment
  UC1479580  Galium multiflorum G. Schoolcraft 1980-6-6 253 Lassen sw Herlong; Bird Canyon area 1341 Comment
  SEINET12495958  Galium multiflorum var. multiflorum G. Schoolcraft 1999-7-12 2857 Lassen North slope of Tulehead canyon near NV stateline 1737 Comment
  UC1025088  Galium trifidum Leo Whitney 1934-7-27 1745 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  JEPS29538  Galium trifidum var. pusillum John Thomas Howell 1959-9-23 34886 Lassen n end of lake Lassen Volcanic National Park, Juniper Lake 2057 Comment
  RSA201323  Galium trifidum var. pusillum J. T. Howell 1959-9-23 34886 Lassen end of Juniper Lake. 2058 Comment
  CHSC23503  Gayophytum Wayne O. Baum 1971-7-12 71 -75 Lassen S. slope of Gallatin Peak. 2042 Comment
  JEPS128407  Gayophytum diffusum Catherine Bauer with Ellen Bauer Benson 2017-8-16 15 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  POM204160  Gayophytum helleri var. glabrum J. T. Howell 1934-7-9 12532 Lassen Harvey Valley. Comment
  POM203958  Gayophytum racemosum J. T. Howell 1934-7-7 12473 Lassen Harvey Valley. Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 Comment
  UCD150409  Gayophytum racemosum Harry A. George 1967-6-15 s.n. Lassen Willow Creek Ranch. Comment
  UCD55160  Gayophytum ramosissimum Ellen Dean 2006-5-15 3048 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  SEINET10491752  Gayophytum ramosissimum Paul Gallian, David B. Dunn 1971-6-2 Gallian 468 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridenta, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC217384  Gentiana affinis var. ovata Duncan Dunning 1921-8-11 5 Lassen Near Martin Springs, Lassen National Forest Comment
  JEPS88543  Gentiana calycosa Vernon H. Oswald and Lowell Ahart 1996-8-1 8119 Lassen Forest Rd, 28N56 (D-Line) ca. 2 mi N of Cyer Mtn. Lookout SSW of Westwood 1737 Comment
  UC405455  Gentiana newberryi Mrs. R. M. Austin 1879-1 Lassen Mountain Meadows Comment
  UC803944  Gentiana newberryi G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 3998 Lassen nw of Susanville; Hog Flat 1676 Comment
  CHSC77216  Geranium richardsonii Schoolcraft 1999-6-25 2840 Lassen SW of Lost Lake on SE slopes of Warner Mtns. 2225 Comment
  UC1037229  Geranium viscosissimum Leo Whitney 2007 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UC773888  Geranium viscosissimum L. R. Short and Wm. Gansberg 1936-6-12 S- 433 Lassen Burgess Spring Experiment Range Lassen Forest 1807 Comment
  RSA122288  Geum canescens L. R. Short, J. Warren 1936-6-23 s.n. Lassen Burgess Spring Exp Range. 1765 Comment
  CHSC6254  Geum macrophyllum L. Harman 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 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
  UC1136907  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  SBBG70512  Geum triflorum var. ciliatum E. Rockwell -Jun-1925 934 Lassen Eagle Lake 1554 Comment
  RSA470172  Gilia brecciarum Christopher Davidson 1975-6-7 2757 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 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
  UC1776672  Gilia capillaris G. Schoolcraft 1993-6-19 2299 Lassen Ash Valley RNA/ACEC 1554 Comment
  CDA40032  Gilia inconspicua Vernon H. Oswald & Lowell Ahart 1998-6-4 9146 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. Comment
  RSA104236  Gilia malior Verne Grant, Alva Grant 1956-5-17 21753 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  CHSC93696  Gilia modocensis Lowell Ahart; John Dittes 2005-6-2 11989 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  CHSC93697  Gilia ochroleuca Lowell Ahart; John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  CHSC64800  Gilia salticola Vernon H. Oswald 1995-5-31 6816 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC60756  Gilia sinuata Vernon H. Oswald; Lowell Ahart 1993-6-14 5545 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On dunes on the N side of the road. 1566 Comment
  CHSC71242  Gilia sinuata Vernon H. Oswald; Lowell Ahart 1998-6-4 9146 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  SD135571  Gilia sinuata John Thomas Howell, Gordon H. True, Margaret Williams 1973-5-12 49156 Lassen Janesville, in cemetary. 1295 Comment
  JEPS123845  Glyceria borealis Lowell Ahart, John Dittes 2015-7-14 20326 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  OBI77053  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  UCR244038  Glyptopleura marginata Jim Andre 1993-6-1 19708 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CAS-BOT-BC302596  Gnaphalium palustre Clare B. Hardham 1971-8-22 18421 Lassen Diamond Mountain, north slope 2225 Comment
  CHSC34404  Grayia spinosa P. Reynolds 1979-7-4 20 Lassen 1 mi. ne of Wendel. Base of Wendel Canyon. 1295 Comment
  UC1537382  Grayia spinosa Gordon H. True Jr. 1936-6-26 551 Lassen flats s.e. Standish; Honey Lake Valley 1219 Comment
  JEPS124633 Image available Grindelia nana Laurie Hooker 1965-7-13 117 Lassen 1.4 miles past junction of A-2 and 299. Comment
  SEINET10475073  Grindelia squarrosa Mary Susan Taylor 1982-8-19 Taylor 5024 Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  UC1609450  Gymnosteris parvula Vernon H. Oswald and Lowell Ahart 1993-6-3 5485 Lassen between Susanville and Poison Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi n of its jct w Lassen 21 (32N02) to Eagle Lake, on w edge of Pine Creek Valley); Pine Creek Valley, Champs Flat Road 1731 Comment
  NY1011958  Gymnosteris parvula M. J. Williams 1986-5-14 86- 38 --2 Lassen Tuledad Canyon Road, from Duck Flat to Ravendale. 0.1 mile west of California-Nevada line. Comment
  CAS-BOT-BC388467  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  SEINET3928294  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0 1720 Comment
  UC699734  Hackelia californica Farris Farris 1936-6-15 Lassen Eagle Lake Summit 1981 Comment
  UC1583977  Hackelia cusickii G. Schoolcraft 1990-7-2 2099 Lassen sw slopes of Cold Spring Mountain 1950 Comment
  UC1537393  Hackelia floribunda Gordon H. True Jr. 1936-6-27 562 Lassen n slope of Hot Spring Mountain 1828 Comment
  UC1560394  Hackelia micrantha E. Joyal and D. Mehlman 1988-6-29 1295 Lassen Blue Lake campground Warner Mountains 1850 Comment
  UCR109608  Halogeton glomeratus T. C. Fuller 1962-8-28 9475 Lassen Adjacent to railroad tracks, Herlong Siding 1250 Comment
Read comments
Apr 14 2011
  UCD98893  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  UC1553381  Helianthella californica subsp. nevadensis G. Schoolcraft 1988-7-11 1822 Lassen about 1 mi s Hwy. 44 (on road to Goumaz) 1645 Comment
  CAS-BOT-BC305408  Helianthus annuus Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  JEPS78105  Helianthus annuus G. W. Zamzow 1972-7-18 87 Lassen beside Hwy 395 16.8 mi s intersection with Highway 36 1280 Comment
  CAS-BOT-BC305409  Helianthus annuus John Thomas Howell; G. H. True 1973-7-31 50143 Lassen Janesville 1295 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
  SJSU14474  Helianthus cusickii W. D. Pitts 1990-5-29 299 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  CAS-BOT-BC305660  Helianthus cusickii Philip A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale 1310 Comment
  CDA6549  Helianthus cusickii T. C. Fuller 1959-7-7 2910 Lassen Highway 395 and railroad, 5 miles north of road to Wendel. 0 Comment
  UC1483827  Heliotropium curassavicum G. Schoolcraft 1980-7-10 303 Lassen e. shore Eagle Lake 1554 Comment
  JEPS107809  Hemizonella minima Lowell Ahart, John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, 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 1600 Comment
  CDA7823  Hemizonia lobbii T. C. Fuller 1964-10-7 12691 Lassen Hillside Cemetery, 1 mile southwest of Nubieber. 0 Comment
  CHSC77177  Heracleum lanatum G. Schoolcraft 1997-7-30 2618 Lassen W slope of Dimond Mtn. 1950 Comment
  UC1776663  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  HSC29978  Hesperochiron californicus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19191 Lassen Harvey Valley near Cone Springs Comment
  UC1178997  Hesperochiron californicus Herbert L. Mason 1949-4-16 13992 Lassen 2 mi. s. Standish Comment
  HSC63725  Hesperochiron californicus Teresa Prendusi 1980-4-29 Lassen Five Springs Mtn. 1402 Comment
  SEINET5498645  Hesperochiron californicus D. E. Brix 1962-5-2 s.n. Lassen Spring 2 miles from Junction of Red Rock Rd. and Hwy 395 1433 Comment
  UC73707  Hesperochiron californicus Milo S. Baker 1896-5-12 Lassen near Palmer's Comment
  CHSC4793  Hesperolinon micranthum R. Carter 1967-6-29 570 Lassen On rd to Murrer's Meadow. Eagle Lake. Comment
  POM87378  Hesperolinon micranthum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA795326  Hesperolinon micranthum L. Ahart, John Dittes 2010-7-31 16975 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  CAS-BOT-BC280680  Hesperostipa comata John Thomas Howell 1934-6-10 11841 Lassen Near Plumas Junction Comment
  UC641664  Hesperostipa comata G. L. Stebbins Jr. 1939-7-9 2939 Lassen 4 mi s Doyle (near hwy) 1310 Comment
  UCD32669  Hesperostipa comata Beecher Crampton 1954-7-6 2071 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  RSA783327  Heterotheca villosa var. minor R. R. Halse 2010-8-26 8091 Lassen Along State Hwy 70 at Beckwourth Pass ca. 4.3 miles west of its junction with US Hwy 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  UC1562822  Heuchera rubescens Barbara Ertter with Gary Schoolcraft 1987-6-16 7201 Lassen ne side Honey Lake (between Hot Springs Peak and VABM); Skeedaddle Mountains 2255 Comment
  CAS-BOT-BC312418  Hieracium albiflorum John Thomas Howell; Gordon H. True 1973-8-1 50220 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  CAS-BOT-BC312419  Hieracium albiflorum John Thomas Howell; Gordon H. True 1973-7-31 50025 Lassen Road from Janesville to Thompson Peak, Diamond Range, Sierra Nevada 1737 Comment
  CHSC5212  Hieracium albiflorum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  UC1069609  Hieracium albiflorum A. Simontacchi 1940-7-2 889 Lassen 6.2 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  OBI77185  Hieracium greenei Anthony Baniaga 2011-7-18 454 Lassen Lassen NF.2-1/4 mi ESE of Signal Butte. Swains Hole quad. T32N R6E sec 9 NE of SW 1700 Comment
  CHSC66720  Hieracium scouleri var. nudicaule Vernon H. Oswald; Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road. 2011 Comment
  CHSC65298  Hieracium scouleri var. scouleri Vernon H. Oswald 1995-8-21 7206 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the W side of the lake. 1859 Comment
  CHSC66245  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1996-6-24 7885 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Localized colony in shallow water in marshy meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  CHSC107997  Holosteum umbellatum subsp. umbellatum Lowell Ahart; John Dittes 2011-6-20 17482 Lassen On the east bank of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS114655  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes 2008-6-20 14922 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  OBI77055  Hordeum brachyantherum Anthony Baniaga 2011-8-4 487 Lassen Lassen NF. About 1/2 mi WNW of Griffith Hill along 30n21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  RSA647541  Hordeum brachyantherum Marion P. Harthill 1972-6-17 829 Lassen Madeline 1677 Comment
  CHSC75571  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald; Lowell Ahart 1999-6-9 9751 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Along a drainage below the dam of the reservoir. 1353 Comment
  JEPS28320  Hordeum brachyantherum subsp. brachyantherum George W. Gillett 1957-7-29 951 Lassen trail between Butte Lake and Snag Lake; Lassen Volcanic National Park, Butte Lake, Snag Lake 1859 Comment
  UC53617  Hordeum brachyantherum subsp. brachyantherum M. S. Baker and Frank Nutting 1894-7-4 Lassen Dixey Valley Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  CHSC25162  Hordeum jubatum L. E. Ray 1967-6-25 54 Lassen Ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  CHSC5255  Hordeum jubatum 1944-7-11 Lassen Eagle Lake. 1615 Comment
  CHSC65367  Hordeum jubatum Vernon H. Oswald; Lowell Ahart 1995-8-14 7189 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Roadside pond. 1645 Comment
  CHSC7694  Hordeum jubatum Beverley J. Wise 1969-6-4 131 Lassen 10 mi. east of Susanville on Hwy 395, Janesville cut in Hwy. 1310 Comment
  HSC10190  Hordeum jubatum M. T. Milligan 1964-8-6 200 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CAS-BOT-BC289575  Hordeum marinum subsp. gussoneanum Geo. A. Fischer 1928-5-27 23 Lassen Willow Springs, Lassen Forest 1280 Comment
  UC188782  Hordeum marinum subsp. gussoneanum Milo S. Baker Lassen n side Dixie Mountains; n side Dixie Mountains Comment
  CAS-BOT-BC289574  Hordeum marinum subsp. gussoneanum John Thomas Howell 1973-7-10 49804 Lassen Near Susanville on road to Jonesville, Sierra Nevada 1295 Comment
  UC12398  Horkelia fusca subsp. parviflora M. S. Baker and Frank Nutting 1894-7-28 Lassen mtns to s Eagle Lake Comment
  SEINET10483366  Horkelia fusca subsp. pseudocapitata Taylor 1982-7-8 Taylor 4789 Lassen T23N R17E sw sec 28. Beckwourth Pass quad. ALong spur rd ca. 1/3 mi w of Scott Rd, ca. 1.5 mi ne of Beckwourth Pass, ca. 30 mi n of Reno. 4800 ft. Sagebrush Scrub. 1463 Comment
  CHSC84869  Horkelia fusca subsp. tenella L. P. Janeway; B. Castro 2003-10-5 8007 Lassen High Cascade Range. Cone Lake and trailhead parking area (trail 1.3 km southwest into Caribou Wilderness Area). Around meadows and ponds. 2055 Comment
  JEPS44575  Horkelia fusca subsp. tenella C. S. Robinson 1930-7-20 37 Lassen near Westwood Jct.; Norval Flat, Lassen Forest 1747 Comment
  POM34906  Horkelia fusca var. brownii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC143984  Horkelia fusca var. tenella George W. Gillett 1957-7-29 942 Lassen Along trail between Butte Lake and Snag Lake, 1/4-mile above Butte Lake 1859 Comment
  HSC25727  Horkelia fusca var. tenella D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19181 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC143985  Horkelia fusca var. tenella Clarence R. Quick 1962-6-17 62 -19 Lassen N. of DeLasmutt Ranch on Hwy. 44 along dirt road to Blacks Mountain E. F. Hdqrts. 1615 Comment
  CAS-BOT-BC537967  Horkelia tridentata var. flavescens C. L. Hitchcock 1940-5-26 6597 Lassen Ca. 12 miles north of Fall River Mills. (Shasta Co.) on Fall River 1371 Comment
  CAS-BOT-BC55478  Hornungia procumbens Arnold Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north northwest of Wendel. 1231 Comment
  CAS-BOT-BC213004  Hosackia crassifolia John Thomas Howell; Gordon H. True 1973-7-31 50036 Lassen In areas of granitic rock on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  JEPS1628  Hydrophyllum capitatum var. alpinum Leland S. Smith Jun 1925 Lassen near Hayden Hill; Modoc National Forest 1219 Comment
  UC614681  Hydrophyllum capitatum var. alpinum L. Constance 1938-6-10 2325 Lassen 0.5 mi w Fredonyer Pass 1676 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
  RSA370316  Hymenolobus procumbens A. Tiehm, Margaret J. Williams, Gary Schoolcraft 1986-5-12 10350 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
  CHSC5266  Hypericum formosum var. scouleri J. Wolf 1946-6-20 Lassen Eagle Lake, Grasshopper Valley. 1624 Comment
  CAS-BOT-BC88640  Idahoa scapigera G. Schoolcraft 1995-4-19 2465 Lassen Southwest of Susanville at west side of Susan Hills. 1341 Comment
  CAS-BOT-BC206818  Iliamna bakeri Richard R. Halse 2004-7-8 6615 Lassen Along State Hwy. 139, ca. 6 miles N of Eagle Lake. 1710 Comment
  NY716915  Iliamna bakeri R. R. Halse 2004-7-8 6615 Lassen Along State Highway 139, ca. 6 miles north of Eagle Lake 1710 Comment
  SD61029  Iliamna bakeri Darley F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mountains; Modoc National Forest. 1829 Comment
  HSC63937  Ipomopsis aggregata Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak. alongside rd. to lookout 2317 Comment
  UC879819  Ipomopsis aggregata C. L. Hitchcock 1940-5-26 6601 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River Comment
  HSC69077  Ipomopsis aggregata Gary Schoolcraft 1979-7-12 145 Lassen NW side of Shinu Peaks 2134 Comment
  CHSC12453  Ipomopsis aggregata subsp. formosissima Robert W. Severin 1969-7-10 46 Lassen Found on Galatin Peak, in burn area; 2 mi s of E.L.B.S. 1828 Comment
  RSA123124  Ipomopsis aggregata subsp. formosissima B. O. Schreiber 1936-6-25 S- 412 Lassen Burgess Spr. Exp. Range Comment
  HSC82266  Ipomopsis congesta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5991 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC117143  Iris missouriensis Mrs. R. M. Austin 1879-1 302 Lassen Eagle Lake Comment
  POM312929  Iris missouriensis H. L. Mason 1949-5-30 s.n. Lassen Northeast of Burney Falls 1524 Comment
  CHSC59161  Isoetes howellii Vernon H. Oswald; Lowell Ahart 1992-9-15 5215 Lassen Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. 2164 Comment
  CAS-BOT-BC61857  Isoetes nuttallii Alice Eastwood; John Thomas Howell 1940-6-11 7984 Lassen Big Valley Mts. Comment
  UCD54548  Iva axillaris Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2733 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  CHSC76086  Iva axillaris subsp. robustior Lowell Ahart; Vernon H. Oswald 1999-9-13 8227 Lassen Along a 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
  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
  JEPS94475  Ivesia paniculata Vernon H. Oswald and Lowell Ahart 1997-5-27 8494 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat, on n side of a creek paralleling the road); Forest Route 38N04 1546 Comment
  SEINET3860245  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 mi W of Madeline.; 0 Comment
  SEINET4855366  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  SEINET10891010 Image available Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 Nelson 5984 Lassen T38N, R11W, S. 31 & 32. Ash Valley along Adin-Madeline Rd. 16 miles east of Adin. Sagebrush steppe. 1554 Comment
  JEPS109845  Ivesia webberi Dean W. Taylor 2004-5-11 19062 Lassen Seven Lakes Mountain, northwestern end flanking Dry Valley, along jeep road ca. 1 mile from Nevada State Line 1341 Comment
  JEPS28680  Juncus balticus George W. Gillett 1957-7-26 907 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  UC1100988  Juncus balticus Malcolm A. Nobs and S. Galen Smith 1949-7-21 1062 Lassen 4 mi n Madeline Comment
  UC1587074  Juncus balticus G. Schoolcraft 1991-7-31 2204 Lassen Cottonwood Spring Shinn Mtn. 2042 Comment
  UC2481  Juncus balticus J. Burtt Davy Jun 17 1897-Jun 24 1897 3277 Lassen Tule Confederacy Honey Lake Valley Comment
  UCD141331  Juncus balticus subsp. ater John Thomas Howell 1959-9-23 34881 A Lassen North end of Juniper Lake. 2057 Comment
  UCD55162  Juncus balticus subsp. ater Ellen Dean 2006-5-15 3050 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  HSC26016  Juncus bryoides F. J. Hermann 1972-5-17 24752 Lassen 8 mi. W of Susanville 1677 Comment
  UC1567409  Juncus bufonius G. Schoolcraft 1989-7-18 1981 Lassen near Bucks Spring (s of Clarks Valley Road) 1874 Comment
  JEPS121285  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2013-7-23 18907 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS91283  Juncus bufonius var. bufonius Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1987-6-6 9008 Lassen Big Valley, road from Bieber to Lookout, 0.5 miles South of the Modoc County line 1249 Comment
  JEPS126566  Juncus bufonius var. occidentalis Lowell Ahart, John Dittes 2016-6-7 20988 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS67093  Juncus confusus Brown and Wieslander 1922-7-23 69 Lassen Martin Springs Eagle Lake Comment
  UCR88026  Juncus confusus J. T. Howell, G. H. True 1973-8-1 50171 Lassen Sierra Nevada Range, Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  UC1609524  Juncus hemiendytus var. abjectus Vernon H. Oswald and Lowell Ahart 1993-6-3 5481 Lassen between Poison Lake and Susanville (s. side of Pine Creek Valley, Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake); Pine Creek Valley 1725 Comment
  CHSC108000  Juncus hemiendytus var. hemiendytus Lowell Ahart; John Dittes 2011-6-20 17480 Lassen About 15 yards west of the stream, about 40 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC60788  Juncus hemiendytus var. hemiendytus Vernon H. Oswald; Lowell Ahart 1993-6-3 5483 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.4 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  JEPS94376  Juncus hemiendytus var. hemiendytus Vernon Oswald and Lowell Ahart 1997-6-24 8653 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  SEINET3507367 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  UC1543894  Juncus luciensis John Thomas Howell and Louella Bass 1974-7-10 50538 Lassen Elysian Valley Sierra Nevada 1325 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
  CAS-BOT-BC110769  Juncus mertensianus Clare B. Hardham 1969-8-28 17441 Lassen Sierra Nevada. West of Janesville. Comment
  POM111106  Juncus mexicanus Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  HSC95202  Juncus nevadensis Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-28 512 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1133633  Juncus nevadensis H. S. Yates 1936-8-12 6080 Lassen McKenzie Meadow Susanville 1524 Comment
  UC1142989  Juncus nevadensis A. L. Hormay 1941-6-26 28 Lassen Westwood Junction Lassen National Forest 1737 Comment
  JEPS103213  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen North slopes of Skedaddle Mountains 1828 Comment
  HSC103618  Juncus orthophyllus Thomas W. Nelson, Jane Nelson 1985-8-10 8008 Lassen Along north side of Silver Lake 1829 Comment
  UC1601819  Juncus tenuis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixis Mts. Dixie Mts. Comment
  JEPS107986  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
  CHSC117179  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 21013 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC1134300  Juniperus occidentalis A. Simontacchi 1940-6-5 820 Lassen 8.0 mi wnw of Harvey Valley Ranger Station; Halls Flat Quad., Lassen National Forest Comment
  UC572307  Juniperus occidentalis C. G. Albertus 1935-11-1 294 Lassen 2.1 mi ne Chats; Sierraville quadrangle 1569 Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
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Apr 29 2013
  UCR164507  Juniperus occidentalis Maile Neel 2000-4-29 G- 4 Lassen Northern Sierra Nevada Mountains, Lassen National Forest, six miles west of Susanville on Hwy 36, at intersection with Eagle Lake Road (A1) near Eagle Lake Ranger Station, 1400 Comment
  SEINET5334961  Juniperus occidentalis J. Vetter 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA597842  Juniperus occidentalis var. australis F. C. Vasek 1962-9-3 620903 -1 Lassen State Highway 36, 3.6 miles west of Ranger Station, west of Susanville 1524 Comment
  CHSC60293  Juniperus occidentalis var. occidentalis Mary Ann Showers 1992-6-13 2531 Lassen East shore of Butte Lake, ca 0.3 miles south of Butte Creek outlet. Lassen Volcanic National Park. 1841 Comment
  CAS-BOT-BC81290  Juniperus osteosperma Alice Eastwood; John Thomas Howell 1940-6-16 8349 Lassen Omira 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
  UCR3786  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 04 Lassen 5.2-5.4 mi north of the junction of US Hwy 395 w/ Calif. Hwy 70 (alt. US Hwy 40) 1479 Comment
  SEINET5334994  Juniperus osteosperma J. T. Howell 1961-9-26 36969 Lassen East side of Beckwith Pass 1554 Comment
  CHSC23744  Kelloggia galioides M. S. Taylor 1974-7-10 273 Lassen Scattered on W side of Gallatin Beach Rd, ca. 3 mi S of Gallatin Beach on Eagle Lake, ca 12 mi NW of Susanville. 1524 Comment
  UC1136752  Kelloggia galioides George A. Fischer and Irwin H. Johnson 1933-7-14 255 Lassen Lassen National Forest 1783 Comment
  UCD18974  Kelloggia galioides Raymond D. Ratliff 1965-7-29 34 Lassen Lassen National Forest, Lower Pine Creek Allotment (LPC 13-2). 1719 Comment
  CAS-BOT-BC180803  Kochia scoparia Louella Bass 1981-7-21 s.n. Lassen Standish Comment
  CHSC89746  Koeleria macrantha L. P. Janeway 2004-6-26 8149 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
  POM113359  Koeleria macrantha Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  UC1609258  Koeleria macrantha Vernon H. Oswald and Lowell Ahart 1993-6-28 5586 Lassen e Poison Lake (Harvey Valley Rd. (33N02) 1.2 mi n of Hwy 44, e side of Grays Valley); Grays Valley, e of Poison Lake 1731 Comment
  UC773971  Koeleria macrantha L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experiment Range 1798 Comment
  UC74070  Lactuca tatarica subsp. pulchella J. Burtt Davy 1897-6-17 Lassen Comment
  JEPS117573  Lagophylla ramosissima Lowell Ahart, John Dittes 2010-7-31 16997 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS127275  Lagophylla ramosissima Lowell Ahart, John Dittes 2016-7-13 21109 Lassen 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS38999  Lagophylla ramosissima W. L. Jepson 1918-8-2 7776 Lassen Bedswith Pass 1463 Comment
  UC33057  Lagophylla ramosissima M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC341481  Lagophylla ramosissima Barrett Anderson 1986-7-9 3122 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  CAS-BOT-BC341482  Lagophylla ramosissima David D. Keck; J. Clausen 1935-6-25 3760 Lassen Susanville, on yellow-pine covered hills just W. of town 1300 Comment
  POM54286  Lagophylla ramosissima Milo S. Baker 1894-7-5 s.n. Lassen Dixey Valley. 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
  JEPS114639  Lamium amplexicaule Lowell Ahart, John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC352940  Lasthenia glaberrima Wm. Anderson 1960-6-6 s.n. Lassen Barrow pit along county road S. of Mapes Ranch, Henry Lake Valley Comment
  POM29621  Lathyrus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC1137764  Lathyrus brownii August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  CHSC106572  Layia glandulosa Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC67171  Layia glandulosa James D. Jokerst 1991-5-29 3311 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of a drainage. 1584 Comment
  CHSC91322  Layia glandulosa Lowell Ahart; John Dittes 2005-6-1 11889 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1433 Comment
  UC1609230  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  CAS-BOT-BC321494  Layia glandulosa John Thomas Howell 1962-6-19 37888 Lassen Sagebrush flat, 3 mi S of Hallelujah Junction 1524 Comment
  CAS-BOT-BC321495  Layia glandulosa M. S. Taylor 1982-5-29 4571 Lassen 500 yds NE of the jct of Hwy 70 with Hwy 395 at Hallelulia Jct, ca 23 mi N of Reno. 1524 Comment
  CAS-BOT-BC321497  Layia glandulosa Margaret Williams 1974-7-27 74- 2 -51 Lassen Burned area near Hallelujah Junction, W of Hwy 395 and S of Hwy 70 1493 Comment
  UC421730  Lemna trisulca M. S. Baker and Frank Nutting 1894-7-25 Lassen Willow Creek Comment
  RSA318598A  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek-- at bridge on Highway 139 approximately 10 miles north of Susanville 1509 Comment
  SD117142  Lemna trisulca Wayne P. Armstrong 1984-8-25 1218 Lassen Willow Creek, at bridge on Highway 139, approximately10 miles north of Susanville. 1509 Comment
  UC1101286  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-7-21 1051 Lassen 1 mi e of Madeline Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC71871  Lepidium appelianum Vernon H. Oswald; Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Roadside. 1258 Comment
  CAS-BOT-BC88820  Lepidium campestre Louella Bass 1973-6-15 110 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC99534  Lepidium campestre Lowell Ahart; John Dittes 2008-6-20 14957 Lassen In meadow, 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
  CAS-BOT-BC89721  Lepidium latifolium G. Schoolcraft 1987-9-24 1780 Lassen Along Riverside Drive in Susanville. 1310 Comment
  RSA170322  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen On east side of road, Hwy 395 to Litchfield, 4.7 mi S of Ravendale, Madelaine Plains. Comment
  CHSC111251  Lepidium perfoliatum L. P. Janeway; B. Castro 2012-7-2 10936 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  UCD115855  Lepidium perfoliatum Grady L. Webster 1989-5-13 7713 Lassen 2.5 mi E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC12815  Lepidium perfoliatum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. Comment
  RSA152592  Lepidium perfoliatum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16332 Lassen 13.5 mi. E of Susanville. Comment
  UC1137720  Leptodactylon pungens George A. Fischer, Irwin H. Johnson 1933-7-12 F 202 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  CHSC29874  Leptosiphon harknessii Robin L. Ondricek 1978-7-15 69 Lassen S of Mahogany Peak. 2072 Comment
  SJSU6034  Leptosiphon harknessii J. W. Tilden 1960-6-27 1507 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  POM364710  Leptosiphon harknessii J. T. Howell 1934-6-10 11844 Lassen Near Plumas Junction Comment
  UC773857  Leucocrinum montanum L. R. Short 1936-5-1 S- 342 Lassen Burgess Spring Experiment Range; Lassen Forest 1699 Comment
  CAS-BOT-BC508368  Leucocrinum montanum M. Lavin; K. Lavin 1982-5-16 4067 Lassen 1.5 miles east of Halleluja Jct., US 395, Sierra Nevada 1676 Comment
  CAS-BOT-BC508369  Leucocrinum montanum Louella Bass 1973-4-29 31 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  SEINET12044967  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek Comment
  SEINET12044970  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek Comment
  SEINET12319573  Leucophysalis nana J. D. Prouty 1978-1 9 Lassen E of Eagle Lake, at Lower Dry Lake, above W shore 1646 Comment
  UC614395  Lewisia nevadensis L. Constance 1938-6-11 2326 Lassen 5 mi sw Susanville 1371 Comment
  OBI79710  Lewisia rediviva Anthony Baniaga 2011-6-11 334 Lassen Lassen National Forest. Along Highway 139, ca. 4 mi S of Adin. quadrangle. 1326 Comment
  CDA7155  Leymus cinereus G. Schoolcraft 1993-9-18 s.n. Lassen 1 mile N of Sagehen on W side of Hwy 395. Comment
  JEPS68547  Leymus cinereus W. L. Jepson 1918-8-2 7795 a Lassen Raker Ranch Honey Lake Valley 1219 Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  RSA126619  Leymus condensatus A. Simontacchi 1940-6-30 946 Lassen Halls Flat: 8.6 miles W. of Burgees Spring 1700 Comment
  CHSC66712  Ligusticum grayi Vernon H. Oswald; Lowell Ahart 1996-8-1 8127 .1 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. On the downhill side of the road. 1737 Comment
  CAS-BOT-BC246147  Limosella aquatica R. F. Thorne; C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir Comment
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  UC1609099  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1993-6-28 5602 Lassen Rd 35N04 at Aspen Well n of Hwy 44 on the nw edge Harvey Valley (ne of Poison Lake); ne of Poison Lake 1725 Comment
  UC1523795  Linanthus bolanderi Gary Schoolcraft 1981-5-5 370 Lassen s of Adin (on e side of Hwy 139) 1325 Comment
  UCR208968  Linanthus ciliatus Lowell Ahart 2005-6-2 11936 Lassen about 1.5 miles NE of the Anderson Ranch home, Long Valley, c. 6 miles (air) north of the intersection of Scott Road and Hwy 70, 7.5 miles (air) northwest of Halleluja Junction 1601 Comment
  RSA713161  Linanthus pungens L. P. Janeway, B. Castro 2005-7-10 8479 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01. 1859 Comment
  POM74794  Linanthus pungens subsp. pulchriflorus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CDA6345  Linaria genistifolia subsp. dalmatica T. C. Fuller 1968-6-12 17236 Lassen Corut Street & Miller Road, southwest Susanville. 0 Comment
  CHSC80221  Linum lewisii var. lewisii Jeanne Boze 1981-6-12 110 Lassen Along road to 5 corners, 3.1 from Eagle Lake Field Station. 1737 Comment
  CHSC108025  Lithophragma glabrum Lowell Ahart; John Dittes 2011-6-20 17488 Lassen Meadow, about 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC61177  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1993-5-12 5385 Lassen Hwy. 44 between Old Station and A21 (to Westwood), at a cattle guard 1.6 mi NW of Rd. 32N08 to Crater Lake. 1751 Comment
  OBI77066  Lithophragma glabrum Anthony Baniaga 2011-6-7 316 Lassen Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  CAS-BOT-BC435430  Lithophragma glabrum Louella Bass 1975-4-15 22 Lassen Elysian Valley; Sierra Nevada 1325 Comment
  SEINET6032556  Lithophragma glabrum D. E. Brix 1962-5-2 s.n. Lassen Red Rock Road 1433 Comment
  CHSC71099  Lithophragma tenellum Vernon H. Oswald; Lowell Ahart 1998-5-22 9127 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  UC496334  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen between Susanville and Janesville Comment
  SEINET8588548  Lomatium austiniae 2015-5-11 NV 030 -1054 Lassen Constantia Allotment. HWY 395 into CA, past Red Rock fire entrance, turn right onto dirt road entrance before reaching the bridge, drive past two cattle guards, site along ATV road. 1510 Comment
  SEINET8588605  Lomatium austiniae A. Rosenblum, A. Ortega 2015-5-28 NV 030 -1063 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 1460 Comment
  CHSC42595  Lomatium bicolor var. leptocarpum Vernon Oswald 1986-5-28 2048 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC66229  Lomatium bicolor var. leptocarpum Vernon H. Oswald 1996-6-24 7855 Lassen Papoose Meadows located ca.0.5 mi E of Eagel Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  JEPS105642  Lomatium bicolor var. leptocarpum L. P. Janeway 2001-6-19 7186 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain 1640 Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  UC1609378  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1993-6-28 5620 Lassen e. Poison Lake (n. of Hwy. 44 along Rd. 33N47 at n.e. end of Little Harvey Valley, between Champs Flat and Harvey Valley, meadow bordering a drying branch of Pine Creek); Little Harvey Valley 1737 Comment
  CAS-BOT-BC211146  Lomatium grayi Mrs. C. C. Bruce 1898-6-1 2286 Lassen Madaline [Madeline] Plains 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
  UC1483807  Lomatium macrocarpum G. Schoolcraft 1980-4-30 214 Lassen N of Shaffer Mountain 1365 Comment
  UCR183199  Lomatium macrocarpum Jim Andre, G. L. Clifton 1993-6-2 7717 Lassen Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns 1243 Comment
  RSA724325  Lomatium macrocarpum Richard Halse 1977-5-22 1549 Lassen Along Highway 395, 9.5 miles north of Madeline 1490 Comment
  CHSC93705  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2005-6-1 11847 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  CHSC108004  Lomatium nudicaule Lowell Ahart; John Dittes 2011-6-20 17497 Lassen About 40 yards east of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1137735  Lomatium nudicaule L. R. Short and Wm. Gansberg 1936-6-8 S- 399 Lassen Lassen Forest, Burgess Spring Exp. Range 1755 Comment
  CHSC106684  Lomatium plummerae B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CAS-BOT-BC123126  Lomatium ravenii Lincoln Constance; Rimo Carlo Felice Bacigalupi 1959-6-14 3672 Lassen One mile S of Ravendale 1463 Comment
  UC1479583 Image available Lomatium ravenii Gary Schoolcraft 1980-5-9 232 Lassen e Sierra Ordnance Depot (Herlong) (near CA-NV State line); e of Sierra Ordnance Depot (Herlong) 1219 Comment
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Oct 26 2017
  JEPS126472  Lomatium triternatum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-6-15 CA 350 -045 Lassen Take Ramhorn Road past campsite for approximately 10-15 miles. Turn left as the fork and continue on for about 3 miles. 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
  RSA0049637  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21245 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin) 1706 Comment
  RSA0049622  Lomatium vaginatum Dean Wm. Taylor 2012-5-17 21207 Lassen Highway 395 about 0.5 miles S of the Modoc County line, east side of the highway between the roadway and the fenceline (3 miles S of Likely) Comment
  CHSC7677  Lotus corniculatus Beverley J. Wise 1969-5-23 59 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  UC1249270  Lotus corniculatus Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8474 Lassen 1 mi se Milford (near Honey Lake, 26 mi se of Susanville) 1310 Comment
  POM28313  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  POM28315  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA339993  Lotus humistratus Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-3 9481 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
  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
  RSA122900  Lotus unifoliolatus G. A. Fischer, Irwin H. Johnson 1933-7-12 193 Lassen Grass Valley 1695 Comment
  CAS-BOT-BC198254  Lupinus John Thomas Howell 1976-7-19 51949 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  NY748272  Lupinus W. W. Eggleston 1910-9-3 6298 Lassen Vicinity of Doyle Station 1240 Comment
  RSA519408  Lupinus Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
  RSA624904  Lupinus Jeffrey Huber 1971-6-2 110 Lassen 4 mi. S of Adin along Calif. Hwy. 139. Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  UC506912  Lupinus albifrons George A. Fischer, Irwin H. Johnson 1933-7-14 F 265 Lassen Lassen Forest 1767 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
  CHSC29949  Lupinus arbustus Robin Ondricek 1978-6-6 30 Lassen Approx. 1 mi from ELFS where lines corss road. 1584 Comment
  SEINET10490460  Lupinus arbustus subsp. arbustus Katherine L. Morris 1973-5-25 Morris 211 Lassen 9.6 miles n of milford on us 395 in an area covered with artemisia, purshia, And rabbit bush Comment
  SEINET10903629  Lupinus arbustus subsp. arbustus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2590 Lassen Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville, assoc.; Purshia, artemisia 1311 Comment
  SEINET194956  Lupinus arbustus subsp. silvicola A. A. Heller 1938-6-4 15142 Lassen In open places just west of Fredonyer Pass east of Westwood. 1707 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-BC208740  Lupinus argenteus var. heteranthus Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 11 miles south of Ravendale, Hwy. 395 Comment
  CAS-BOT-BC208761  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47443 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline 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
  UC1924594  Lupinus argenteus var. heteranthus Debra Valov 2006-5-28 2006004 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1284 Comment
  UCR270692  Lupinus argenteus var. heteranthus John F. Emmel 1999-6-5 1631 Lassen Honey Lake Basin, north end of Fort Sage Mountains, east base of Turtle Mountain 1280 Comment
  SEINET5327878  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 mi W of Doyle Comment
  SEINET5327987  Lupinus argenteus var. heteranthus J. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, CA 1372 Comment
  CHSC115057  Lupinus argenteus var. meionanthus Don Lepley 2013-7-2 Lassen Lassen National Forest, Eagle Lake Ranger District. Approximately 1.8 air miles west-southwest of head of Elysian Valley, northwest of Bear Flat. 2095 Comment
  JEPS107915  Lupinus argenteus var. meionanthus Lowell Ahart, John Dittes 2005-6-2 11937 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  NY746960  Lupinus breweri H. D. D. Ripley 1943-6-13 5709 Lassen 10 miles south of Milford 1768 Comment
  RSA11957  Lupinus caudatus Elmer I. Applegate 1923-9-30 4032 Lassen Doyle. Comment
  RSA59517  Lupinus caudatus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 miles from junction of Highway 36 and 395. 1250 Comment
  RSA325238  Lupinus lepidus var. aridus A. Tiehm 1984-6-25 8823 Lassen Rodeo Flat, 2.7 miles west of the state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  NY716913  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Highway 395 ca. 7.8 miles southeast of Susanville. 1293 Comment
  UC127007  Lupinus lepidus var. confertus M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  HSC103613  Lupinus lepidus var. confertus Thomas W. Nelson, Jane Nelson 1981-7-17 6735 Lassen Along State Route 395, 22 mi. S of Susanville at milepost 46.80 Comment
  UC1138211  Lupinus lepidus var. lobbii George A. Fischer and Irwin H. Johnson 1933-7-12 F 203 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  CHSC99124  Lupinus lepidus var. sellulus Lowell Ahart; John Dittes 2008-6-19 14886 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS88206  Lupinus lepidus var. sellulus Vernon H. Oswald and Lowell Ahart 1996-6-24 7867 Lassen Papoose Meadows located 0.5 mi e of Eagle Lake Rd (A!), and 2.5 mi s of Eagle Lake, 0.2 mi s of the cabins Papoose Meadows; Modoc Plateau, Papoose Meadows 1633 Comment
  CHSC60830  Lupinus leucophyllus Vernon H. Oswald; Lowell Ahart 1993-6-28 5607 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC506994  Lupinus leucophyllus George A. Fischer and Irwin H. Johnson 1933-7-12 204 Lassen Grass Valley. Comment
  SEINET10452640  Lupinus meionanthus Taylor 1982-8-27 Taylor 5050 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
  SEINET194955  Lupinus microcarpus var. densiflorus A. A. Heller 1938-6-23 15219 Lassen Along U.S. Highway 395 between Germo and Madeline. 1524 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
  RSA0005616  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA0005617  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC138031  Lupinus onustus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC108001  Lupinus polycarpus Lowell Ahart; John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS118457  Lupinus polycarpus Lowell Ahart, John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SEINET10488918  Lupinus sellulus Katherine L. Morris 1973-5-25 Morris 215 Lassen Collected 2.6 mi w of susanville, on u.s. 36, In an area of pinus jeffreyi and Purshia. Intermediate to l. Confertus (?). Comment
  CHSC65313  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the edges of the lake and on floating bogs. 1859 Comment
  RSA0011271  Lythrum hyssopifolia L. Ahart, John Dittes 2005-6-2 11969 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CDA18272  Machaeranthera canescens G. D. Barbe 1974-8-2 1937 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA252467  Machaeranthera canescens var. canescens R. F. Thorne, C. W. Tilforth 1969-9-6 39268 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  SEINET10872918  Machaerocarpus californicus Mary Susan Taylor 1982-6-12 Taylor 4647 Lassen T29N R10E ne/nw sec 13. Westwood quad. Aquatic in still pond on n side of West Fork of Susan River, s side of Hwy 36 at jct w/ Willow Cr Rd, 8 mi w Susanville. Comment
  SD132249  Madia elegans G. Helmkamp 1990-9-23 A 6 Lassen 3.0 miles east of Susanville, along State Road 36. 1340 Comment
  SEINET11601315 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  UCD134225  Madia elegans Malcolm A. Nobs; Galen Smith 1949-8-20 1470 Lassen Honey Lake Valley, 1 mile south of Milford. Comment
  CAS-BOT-BC334687  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CHSC44881  Madia gracilis Lowell Ahart; John Thomas Howell 1974-7-9 525 Lassen Along the edge of Eagle Lake Road, about 3 miles north-west of Susanville. 1584 Comment
  JEPS17908  Madia gracilis Rimo Bacigalupi with G. T. Robbins 1955-7-21 5432 Lassen upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Creek 1767 Comment
  SEINET481268  Madia gracilis N. H. Holmgren, P. K. Holmgren 9497 1980-7-4 Lassen Observation Peak, sousth obase in upper Smoke Creek drainage, 19 km (12 miles) airline distance east-southeast of Ravendale Comment
  RSA715984  Madia minima L. Ahart, John Dittes 2005-6-2 11940 Lassen About 1 1/2 miles northeast of the Anderson Ranch Home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  JEPS128415  Maianthemum stellatum Catherine Bauer with Ellen Bauer Benson 2017-8-16 21 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CAS-BOT-BC512878  Maianthemum stellatum Louella Bass 1973-6-17 120 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC512879  Maianthemum stellatum Louella Bass 1973-5-25 37 Lassen Elysian Valley 1325 Comment
  SJSU10452  Maianthemum stellatum H. L. Buckalew 1961-7-9 Lassen spring near Blue Lake, Warner Mts 1828 Comment
  POM37232  Malacothrix floccifera Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1616 Comment
  RSA164326  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Gold Run Creek south of Susanville. Comment
  CAS-BOT-BC347440  Malacothrix floccifera Louella Bass 1983-6-2 s.n. Lassen On Sears Road near Janesville Comment
  HSC63963  Malacothrix sonchoides Teresa Prendusi 1980-5-30 Lassen Mapes Spring on hillside 1555 Comment
  CHSC12430  Malva neglecta Robert W. Severin 1969-6-25 18 Lassen 1 3/4 mi e E.L.B.S. along road to Murrer's Upper Meadow, 1/2 mi from road to station. 1584 Comment
  UC1192280  Malvella leprosa Verne Grant and Irving Schneider 1947-9-6 8386 Lassen hot springs ca. 1 mi. w. Wendel Comment
  CAS-BOT-BC71144  Marsilea Clarence R. Quick 1962-6-17 62 -26 Lassen Swains Hole, south of Blacks Mountain Experimental station 1554 Comment
  CHSC7653  Matricaria discoidea Jesse Langdon 1969-6-3 26 Lassen Susanville, Soil Conservation Office. 1310 Comment
  SEINET3816871  Matricaria discoidea Noel H. Holmgren, Patricia K. Holmgren 1980-7-5 9522 Lassen Upper smoke creek drainage, 20.4 km from U.S. highway 395 via Rye Patch Canyon, 24 km airline distance southeast of Ravendale, 1580 Comment
  CDA8327  Matricaria occidentalis T. C. Fuller 1963-6-1 10617 Lassen West side of road to Susanville, 2.0 miles south of Pittville. 0 Comment
  UCD107934  Medicago sativa P. B. Kennedy 1927-9-1 s.n. Lassen Standish. Comment
  UCD86379  Melica bulbosa L. Whitney 1935-7-11 3226 Lassen Camp 10, Fruit Grower's Supply Company. Lassen National Forest. Comment
  SEINET4671551  Melica bulbosa H. Durio 1979-5-23 s.n. Lassen Adin, Meyers Ranch Comment
  UCD87291  Melica fugax Jack Major 1966-6-24 s.n. Lassen Lassen County (northeastern): Long Valley, 3 miles airline southwest of Patterson Guard Station, Modoc National Forest. Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 Comment
  CHSC105237  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC106171  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CHSC60909  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-7-8 5654 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poisen Lake. 1709 Comment
  CHSC64791  Mentzelia albicaulis Vernon H. Oswald 1995-5-31 6813 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.0 mi e of Hwy. 395, between Litchfield and Ravendale. 1341 Comment
  CHSC7655  Mentzelia albicaulis Beverley J. Wise 1969-5-18 66 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 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
  HSC42457  Mentzelia albicaulis Barbara Kelly 1977-8-9 569 Lassen On Rd. from Adin to Madeline, 10.1 mi. E of Madline. Comment
  UC124778  Mentzelia congesta T. S. Brandegee 1893-6-23 Lassen Honey Lake Comment
  UC1483878  Mentzelia congesta G. Schoolcraft 1979-6-26 95 Lassen s Buckhorn Rd.; ; SE1/4 1706 Comment
  UCR244033  Mentzelia congesta Jim Andre, G. L. Clifton 1993-6-3 19703 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  CHSC13851  Mentzelia dispersa J. Grove 1973-7-30 Lassen At Sugar Pine Basin. 1524 Comment
  JEPS127346  Mentzelia dispersa Lowell Ahart, John Dittes 2016-7-13 21124 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC1137741  Mentzelia dispersa George A. Fischer, Irwin H. Johnson F 229 Lassen Lassen National Forest, Patterson Flat 1737 Comment
  CHSC20266  Mentzelia laevicaulis J. Pitts 1972-7-20 334 Lassen Found on hwy 139, 10 mi n of Susanville. Comment
  HSC26603  Mentzelia veatchiana D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19284 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  CAS-BOT-BC428456  Micranthes aprica 1927-5-20 1 Lassen Lassen National Forest. Norval Flat. 1747 Comment
  SD8380  Micranthes bryophora Mrs. R. M. Austin 1882-8-7 Lassen Kings Valley Comment
  SBBG2836  Micranthes integrifolia H. and M. Dearing 1938-6-30 2232 Lassen Box 20 mi N of Susanville [Hwy 44] 1066 Comment
  JEPS87523  Microseris laciniata Vernon H. Oswald and Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  OBI76931  Microseris laciniata Anthony Baniaga 2011-7-9 434 Lassen Lassen Natl forest. SW Pine Crk Valley. Pine Crk valley quad T31N R8E sec 10 NE of NE 1715 Comment
  JEPS118158  Microseris laciniata subsp. laciniata Dean W. Taylor 2009-5-21 20606 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  CAS-BOT-BC349300  Microseris nutans A. M. Vollmer; L. Beane 1953-7-1 53 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  OBI76978  Microseris nutans Anthony Baniaga 2011-8-4 486 Lassen Lassen Natl Forest. About 1/2 mi WNW of Griffith Hill along 30N21. Swain Mtn quad. T30N R8E sec 8 NE of NW 1907 Comment
  CHSC29930  Microsteris gracilis Robin L. Ondricek 1978-6-20 65 Lassen Callatin Burn, 1.8 mi s of Five Corners. 2011 Comment
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Jan 31 2011
  SD62167  Miltitzia lutea Rimo Bacigalupi, G. T. Robbins 1955-7-21 5429 Lassen Southeastern part of Secret Valley, along Smoke Creek Ranch Road, 8.0 miles east of U. S. Highway 395. 1402 Comment
  CDA41658  Mimulus breviflorus S. E. Schoenig 1998-7-5 98 -71 Lassen East side of Poison Lake, 50 meters west of Pitville Road, 1.8 miles northwest of Highway 44, east of railroad track and wet ditch. Comment
  SEINET230131 Image available Mimulus densus Noel H. Holmgren, Patricia K. Holmgren 1980-1 9512 Lassen Observation peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 2190 Comment
  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
  JEPS4710  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi s Westwood 1524 Comment
  RSA716144  Mimulus floribundus L. Ahart, John Dittes 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  UC125195  Mimulus layneae Baker and Nutting Lassen Big Valley Comment
  UC1523772  Mimulus moniliformis Gary Schoolcraft 1981-6-25 475 Lassen Comment
  HSC22944  Mimulus nanus var. mephiticus John Pratt 1970-6-27 47 Lassen 0.5 mi. E of Turtle Head 1220 Comment
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Jul 9 2013
  POM181073  Mimulus nanus var. mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat. Comment
  POM297719  Mimulus nanus var. mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat. Comment
  HSC95323  Mimulus primuloides var. primuloides Gordon Leppig, Tony LaBanca 1997-6-28 516 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC726696  Mimulus pulsiferae A. A. Heller 1938-6-22 15187 Lassen one mi e Westwood 1524 Comment
  UC1523779  Minuartia douglasii Gary Schoolcraft 1981-6-9 440 Lassen s Pittville 1249 Comment
  CAS-BOT-BC221780  Monardella odoratissima Gordon H. True 1936-6-27 552 Lassen Between Bull Flat and Hot Spring Mt. 1524 Comment
  CAS-BOT-BC221972  Monardella odoratissima subsp. glauca John Thomas Howell 1934-6-10 11888 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  UC1537599  Monardella odoratissima subsp. pallida Gordon H. True Jr. 1938-7-14 961 Lassen Just north of summit Milford Grade 1767 Comment
  UC506977  Monardella odoratissima subsp. pallida George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen Forest 1722 Comment
  JEPS122366  Monardella sheltonii Joseph Broberg, Jaycee Leonard 2012-8-27 CA 320 -127 Lassen From Alturas head South on Highway 395. At the town of Likely turn left onto county road 64, and continue to Jess Valley. Turn right at fork onto county road 258. Continue past Blue Lake, and turn onto Clark Valley road. Collection site is just after border between BLM and USFS land. South of aspen stand Comment
  HSC14280  Monardella villosa D. E. Anderson 1963-8-25 2800 Lassen 3 mi. N of Cromberg along Hwy. Alt 40 1372 Comment
  JEPS124376  Monolepis nuttalliana Lowell Ahart, John Dittes 2015-7-13 20311 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 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
  UC526137  Monolepis pusilla John Thomas Howell 1934-6-10 11895 Lassen Horse Lake Comment
  UCR244049  Monolepis pusilla Jim Andre 1993-6-1 19719 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  NY497728  Montia chamissoi G. Schoolcraft 1993-6-1 2272 Lassen Upper Secret Creek, south of Tule Patch Spring 1463.0 Comment
  UC1567410  Montia chamissoi G. Schoolcraft 1989-7-18 1983 Lassen near Buck's Spring (s of Clark's Valley Road) 1874 Comment
  POM312351  Montia chamissoi Malcolm A. Nobs, S. Galen Smith 1949-7-21 1064 Lassen Lassen County: Shallow marshy stream from springs, 4 miles N of Madeline Comment
  JEPS107818  Montia linearis Lowell Ahart, John Dittes 2005-6-2 11956 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
  UC1924586  Montia linearis Debra Valov 2006-5-28 2006016 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC445066  Montia linearis Louella Bass 1973-4-23 27 Lassen Elysian Valley. 1325 Comment
  RSA129317  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6059 Lassen Near Red Rock. 1341 Comment
  UCD86562  Muhlenbergia asperifolia R. Tofsrud 1947-7-1 227 Lassen Between Johnstonville and Standish. Comment
  CAS-BOT-BC260598  Muhlenbergia filiformis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49495 Lassen Elysian Valley, W of Janesville 1325 Comment
  JEPS28280  Muhlenbergia filiformis J. T. Howell 1957-7-28 940 Lassen marsh near west end of Widow Lake; Lassen Volcanic National Park 2072 Comment
  CAS-BOT-BC275333  Muhlenbergia jonesii John R. Reeder; Charlotte G. Reeder 1973-7-1 6240 Lassen Ca. 25 miles NW of Susanville along State Highway 44 in Lassen National Forest 1767 Comment
  RSA256329  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-5-23 6170 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1738 Comment
  CAS-BOT-BC275084  Muhlenbergia richardsonis G. Schoolcraft 1999-6-30 2852 Lassen Small res. 1 mile W of Horne Ranch, 12 miles E of Ravendale 1645 Comment
  RSA256322  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1973-6-5 6236 Lassen 35 miles NW of Susanvill, near Pittville sing on Hwy 44 1738 Comment
  UC506980  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 224 Lassen Stringer Mdw. Lassen National Forest 1722 Comment
  UCD86955  Muhlenbergia richardsonis Malcolm A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline. Comment
  CHSC57215  Muilla transmontana Mary Meyer 1980-5-20 523 Lassen On mesa 1 mi due east of BLM campground and spring, north of Snowstorm Mountain. 1645 Comment
  UC1567382  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen Susanville NW corner of Secret Valley near Karlo. 1356 Comment
  HSC63965  Muilla transmontana Teresa Prendusi 1980-5-8 Lassen Balls Canyon N of Shaffer Mtn. 6 mi. W of Hwy. 395 1372 Comment
  UC1609242  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-7-8 5651 Lassen 1.9 mi n ow Hwy 44, on se edge of Poison Lake (Pittville Road) 1709 Comment
  UC1608993  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-5-12 5392 Lassen 0.6 mi e Shasta County Line (n side of Hwy 44, between Old Station and Poison Lake) 1645 Comment
  OBI76991  Myosurus apetalus var. borealis Anthony Baniaga 2011-6-10 325 Lassen Lassen/Modoc County. On the S side of Hwy 299, ca. 1.2 mi E of Lassen County rd 428. 1295 Comment
  JEPS97413  Myosurus minimus Vernon H. Oswald and L. Ahart 1995-6-19 6895 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Abundant on the drying beds of vernally flooded wetlands on a stony and brushy flat. 1383 Comment
  NY492693  Myosurus minimus P. H. Raven 1958-6-17 13285 Lassen Along U. S. Highway 395, 1.9 miles south of Ravendale Comment
  RSA338411  Myriophyllum spicatum Robert F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, near junction of Termo-Grasshopper Rd. & Hwy 139. 1433 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
  CHSC89734  Navarretia breweri L. P. Janeway 2004-6-26 8143 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
  JEPS19815  Navarretia breweri Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 -a Lassen 7 mi n Madeline (about 1 mi n of Sage Hen siding on S.P Railroad, just e of U.S. Highway 395) 1676 Comment
  UC1184057  Navarretia breweri Jean Langenheim 1957-6-22 4365 Lassen Said Valley Reservoir, ne part of Lassen County Said Valley Reservoir Comment
  HSC23507  Navarretia breweri W. Lessig 1967-7-1 11 Lassen 10 mi. N of Susanville on Hwy. 139 1829 Comment
  CHSC1241  Navarretia capillaris 1944-6-30 Lassen Grasshopper Valley, N. of Eagle Lake. 1615 Comment
  SEINET200215  Navarretia divaricata C. McMillan 1949-6-15 1541 Lassen Five miles west of Bieber Comment
  UC1137719  Navarretia divaricata L. R. Short and Wm. Gansberg 1936-7-3 S- 473 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  CHSC23850  Navarretia divaricata subsp. vividior K. R. Stern 1974-6-22 5850 B Lassen E side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  SEINET3894760  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -065 Lassen Along Hwy 299 about 9.4 miles east of jct with Hwy A2 and 1.4 west of jct with Hwy 139, southwest of Adin.; 0 Comment
  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
  UCD48456  Navarretia intertexta subsp. propinqua G. L. Stebbins Jr. 1949-8-6 4001 Lassen Hog flat, NW of Susanville. 1676 Comment
  CHSC6202  Navarretia leptalea J. B. Kimsey 1946-6-26 Lassen Pine Creek, Eagle Lake. 1615 Comment
  CHSC27670  Navarretia leptalea subsp. bicolor Robert A. Schlising 1978-7-9 3312 Lassen South of Eagle Lake. Area between Papoose Meadows and Eagle Lake Road. Comment
  CHSC23853  Navarretia leucocephala subsp. minima Glenda Foster 1975-7-12 100 Lassen At margins of Poison Lake, along road to Pitville, ca. 0.2 mi from Hwy. 44, past railroad tracks. Comment
  HSC82246  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1980-7-6 5986 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS120031  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2012-7-9 18288 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127174  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2016-7-15 21213 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1191627  Navarretia leucocephala subsp. minima Verne Grant and Irving Schneider 1947-7-31 8208 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1137583  Navarretia linearifolia subsp. linearifolia A. Simontacchi 1940-6-4 803 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1143039  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  UC1184061  Navarretia linearifolia subsp. linearifolia Jean Langenheim 1957-6-22 4368 Lassen Said Valley Said Valley (northeastern part Lassen County) Comment
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 Lassen Gold Run Creek south of Susanville Comment
  POM68111  Nemacladus sigmoideus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CAS-BOT-BC231218  Nemophila parviflora var. austiniae Philip A. Munz 1947-5-18 11860 Lassen Fredonyer Forest Campground on Highway 36, W of Susanville 1508 Comment
  RSA38472  Nemophila parviflora var. austiniae P. A. Munz 1947-5-18 11860 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  SEINET5521095  Nemophila pedunculata N. H. Holmgren, P. K. Holmgren 1978-6-11 8911 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  CHSC106075  Nicotiana attenuata Lowell Ahart; John Dittes 2010-7-31 17022 Lassen On the north side of the road, about 40 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC5920  Nicotiana attenuata J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Horse Lake. 1554 Comment
  UC1037191  Nicotiana attenuata Leo Whitney 1933-8-22 1500 Lassen base of Harvey Mountain; Lassen National Forest 1889 Comment
  UC1191768  Nicotiana attenuata Verne Grant and Irving Schneider 1947-8-1 8235 Lassen e end Tule Lake Comment
  HSC42424  Nicotiana attenuata Barbara Kelly 1977-8-9 557 Lassen 20 mi. E Madeline on dirt road from Adin. 1 mi. E of 10 ton limit bridge over wash Comment
  JEPS124603 Image available Nicotiana attenuata G. R. Ostrander 1965-7-12 256 Lassen Growing along U. S. 395 15 miles N. of the junction of Calif. 70 & U. S. 395. Comment
  CDA18261  Nothocalais alpestris G. D. Barbe 1974-8-2 1923 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS94115  Nothocalais troximoides Vernon H. Oswald and Lowell Ahart 1998-5-22 9097 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
  CDA20352  Oenothera alyssoides var. villosa D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  HSC31754  Oenothera cespitosa var. marginata Donald Spalinger 1974-5-16 65 Lassen E of Hurlong in the Doyle Winter Deer Range 1220 Comment
  JEPS124836 Image available Oenothera deltoides Laurie Hooker 1965-7-12 106 Lassen 2.6 miles past Milford on Highway 395. Comment
  JEPS124837 Image available Oenothera deltoides J. Yamanaka 1965-7-12 122 Lassen U. S. Highway 395, 2.6 miles N. of Milford Sandy soil. Comment
  NY998638  Oenothera deltoides var. piperi W. W. Eggleston 1911-9-3 7705 Lassen Vicinity of Doyle Station 1290 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  SEINET5345714  Oenothera deltoides var. piperi P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  CHSC4767  Oenothera elata subsp. hirsutissima R. Carter 1967-7-16 621 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
  UC1186545  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 mi n Bridge Camp; Hat Creek Comment
  CHSC29938  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 71 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  CAS-BOT-BC350042  Oreostemma alpigenum var. andersonii Hans Leschke 1958-9-30 1571 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  UC831401  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen 1 mi e Westwood 1524 Comment
  CAS-BOT-BC350041  Oreostemma alpigenum var. andersonii Hans Leschke 1959-8-3 1595 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  SEINET5766936  Orobanche corymbosa F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  CAS-BOT-BC500270  Orobanche uniflora subsp. occidentalis Doris Kildale Gillespie 1930-5-13 9368 Lassen Between Susanville and Janesville Comment
  RSA408800  Orthocarpus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UCD23273  Orthocarpus bracteosus Louis K. Mann; Pat Mann 1963-6-18 s.n. Lassen On State Highway 139 from Susanville to Adin, 11.8 miles north of Junction to Termo. Comment
  UCD18956  Orthocarpus cuspidatus subsp. copelandii Raymond D. Ratliff 1965-7-17 21 Lassen Lassen National Forest, Lyon's hgd., Harvey Valley Allot. 1706 Comment
  CHSC60858  Orthocarpus cuspidatus subsp. cryptanthus Vernon H. Oswald; Lowell Ahart 1993-6-28 5604 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC1537445  Orthocarpus cuspidatus subsp. cryptanthus Gordon H. True Jr. 1936-6-25 526 Lassen e Harvey Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  RSA337231  Orthocarpus hispidus Noel Holmgren, Patricia K. Holmgren 1980-7-3 9483 Lassen US Highway 395, 7.4 km (4.6 mi) S of Ravendale. 1620 Comment
  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
  JEPS98391  Oryzopsis exigua Vernon H. Oswald, G. Schoolcraft, M. Dolan, and B. Corbin 2000-6-18 9929 Lassen E of Ravendale (E-NE of the lookout on Observation Peak) 2377 Comment
  UC1776707  Osmorhiza occidentalis G. Schoolcraft 1994-7-7 2447 Lassen About 1 mile W of Boot Lake 2407 Comment
  RSA78899  Oxytheca dendroidea E. K. Balls, Percy C. Everett 1952-10-10 18140 Lassen 5.5 miles NE of Litchfield, Hwy 395, between Susanville and Alturas 1280 Comment
  CAS-BOT-BC316858  Packera eurycephala var. eurycephala C. C. (Mrs.) Bruce 1898-6-1 2176 Lassen Shumway Comment
  CAS-BOT-BC316859  Packera eurycephala var. eurycephala Michael A. Vincent 1999-6-9 8581 Lassen Along US Rte. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CAS-BOT-BC317057  Packera multilobata Louella Bass 1982-5-30 s.n. Lassen Hillside near Biscar dam, Karlo Road northeast of Susanville Comment
  UC187441  Packera streptanthifolia T. S. Brandegee 1892-6-26 Lassen Milford Comment
  POM99654  Paeonia brownii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  RSA59891  Paeonia brownii E. K. Balls 1950-5-19 14774 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline 1585 Comment
  CAS-BOT-BC253718  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen In city park, Susanville 1295 Comment
  CAS-BOT-BC253719  Panicum capillare Arnold Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs, N end of Honey Lake Valley, 4 air miles SE of Wndel 1220 Comment
  NY1092251  Panicum capillare A. Tiehm 1980-5-29 5759 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel. 1220 Comment
  RSA647577  Pascopyrum smithii Marion P. Harthill 1972-6-16 780 Lassen Doyle 1372 Comment
  CHSC68873  Pectiantia pentandra Vernon H. Oswald; Lowell Ahart 1997-6-24 8615 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SEINET10456341  Pectocarya penicillata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 874 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  JEPS97422  Pectocarya setosa Vernon H. Oswald and L. Ahart 1995-6-19 6892 Lassen T30N R16E NW1/4 NW1/4 Sect. 7, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395 1383 Comment
  UC1523781  Pedicularis semibarbata G. Schoolcraft 1981-6-30 487 Lassen western slopes of Roop Mountain 1889 Comment
  UC1713528  Pedicularis semibarbata Leo Whitney 1935-6-19 3270 Lassen Camp 10, Fruit Grower's Supply company Camp 10; Lassen National Forest Comment
  UC2042972  Pedicularis semibarbata Barbara Ertter 1990-5-13 8965 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  UCD18965  Pedicularis semibarbata Raymond D. Ratliff 1965-8-4 49 Lassen Lassen National Forest, Harvey Valley Allotment (HV 19-13). 1767 Comment
  SD77352  Penstemon deustus Francis W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1096 Comment
  POM252931  Penstemon deustus subsp. sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass on Hwy 36. 1646 Comment
  CHSC4272  Penstemon deustus var. pedicellatus K. R. Stern 1967-6-24 2426 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  JEPS29103  Penstemon deustus var. pedicellatus Lauramay T. Dempster 1961-6-17 1679 Lassen Highway 395 just w Tule Mt.; just w of Tule Mt. 1645 Comment
  UC477496  Penstemon deustus var. pedicellatus A. G. Brenneis 1928-7-3 12 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  JEPS11274  Penstemon gracilentus Brown and Wieslander 1922-7-23 43 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  RSA746506  Penstemon gracilentus K. M. Meyer, A. Townesmith 2007-7-23 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off hwy. 44. (turn at rest area). 1900 Comment
  NY600697  Penstemon gracilentus K. A. Vincent 1986-7-19 4382 Lassen Sierra Nevada, Roop Mountain; along CA A1 at Eagle Lake Summit, ca. 7.6 miles north of junction CA 36, ca. 7 air miles northwest of Susanville. 1932.4 Comment
  SEINET272361 Image available Penstemon gracilentus Karl Vincent, Charlott Labbe 1986-7-19 4382 Lassen Sierra Nevada Roop Mtn.; common in burned area in pine-spruce forest along CA A1 at Eagle Lake Summit ca 7.6 mi N of j 1932 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
  UCD124278  Penstemon laetus Beecher Crampton 1964-6-26 7082 Lassen ca. 32 miles northwest of Susanville west end of Harvey Valley. Comment
  POM252805  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mile S of Westwood. Comment
  SEINET11262116  Penstemon neotericus Karl A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mtn. Along CA A1 ca 4 mi NW of jct CA 36, site ca 6 air mi WNW of Susanville.; 0 1737 Comment
  NY627269  Penstemon neotericus C. B. Wolf 1937-8-7 9068 Lassen Northern Sierra Nevada, Red Bluff-Susanville Road, 11.5 miles east of Chester 1493.5 Comment
  POM147859  Penstemon neotericus J. B. Feudge 1927-7-20 1768 Lassen Westwood. Comment
  CAS-BOT-BC239221  Penstemon newberryi var. berryi Clare B. Hardham 1969-8-28 17449 Lassen West of Janesville Comment
  JEPS7416  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen on Highway #36, 2 mi e Fredonyer Pass; e of Fredonyer Pass 1645 Comment
  JEPS94531  Penstemon roezlii Vernon Oswald and Lowell Ahart 1997-6-24 8623 .1 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  NY650095  Penstemon roezlii N. H. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 miles) from U.S. Highway 395 via Rye Patch Canyon, 24 km (15 miles) airline distance southeast of Ravendale. 1580 Comment
  POM195122  Penstemon roezlii D. D. Keck 1930-7-23 954 Lassen 12 miles west of Susanville. 1677 Comment
  RSA339998  Penstemon roezlii Noel Holmgren, Patricia K. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from US Hwy 395 via Rye Patch canyon, 24 km (15 mi) airline distance southeast of Ravendale. 1585 Comment
  NY641729  Penstemon roezlii A. J. Cronquist 1959-6-17 8470 Lassen 50 miles southeast of Susanville. 1371.6 Comment
  NY650103  Penstemon roezlii J. T. Howell 1974-7-30 50689 Lassen Slope south and southeast of Diamond Mountain 2225.0 Comment
  SEINET226061  Penstemon roezlii M. Lavin 1982-5-30 4122 Lassen E of Hallelujah Junction 22 air mi NW of Reno W side of Petersen Mtns 1676 Comment
  CAS-BOT-BC239498  Penstemon rydbergii var. oreocharis John Thomas Howell 1976-7-20 s.n. Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC239499  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36, road to Coppervale R.S., E. of Westwood 1493 Comment
  CHSC1878  Penstemon rydbergii var. oreocharis K. Chew 1954-7-6 Lassen Along Pine Creek, 1 mi. below Stephens meadows. 1828 Comment
  CHSC30576  Penstemon rydbergii var. oreocharis Sori H. Shad 1970-7-9 41 Lassen North east edge of Meadow. 1584 Comment
  CHSC4754  Penstemon rydbergii var. oreocharis R. Carter 1967-7-14 612 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir. Comment
  JEPS79151  Penstemon rydbergii var. oreocharis L. R. Heckard with R. C. Bacigalupi 1980-6-12 5256 Lassen large meadow just ne Westwood (near golf course); ne of Westwood 1554 Comment
  POM252929  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen Along Hwy 36, 1 mile east of Westwood. 1524 Comment
  SBBG66488  Penstemon rydbergii var. oreocharis S. W. Hutchinson -Jun-1925 1088 Lassen Eagle Lake 1554 Comment
  SBBG7130  Penstemon rydbergii var. oreocharis H. and M. Dearing 1938-7-1 2239 c Lassen 12 mi W of Susanville Comment
  UC54980  Penstemon rydbergii var. oreocharis J. B. Davy Lassen Amedee Comment
  UC696713  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen about 4 mi e Westwood; e of Westwood 1432 Comment
  CHSC12411  Penstemon speciosus Lynn R. Thomas 1969-6-20 135 Lassen Just above Deans Meadow, ca. 6 mi. s of E. L. B. S. 2011 Comment
  CHSC60780  Penstemon speciosus Vernon H. Oswald; Lowell Ahart 1993-6-14 5531 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
  POM44291  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  RSA121810  Penstemon speciosus L. R. Short, J. Warren 1936-6-26 S- 357 Lassen Burges Spr. Exp. Range. 1845 Comment
  RSA401878  Penstemon speciosus Rockwell 1925-07 s.n. Lassen Eagle Lake. Comment
  SBBG26872  Penstemon speciosus D. D. Keck 1930-7-23 50 Lassen Susanville 1280 Comment
  UC1583941  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen sw slopes of Cold Spring Mtn. 1889 Comment
  UC423671  Penstemon speciosus David D. Keck 1930-7-23 950 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  UC506982  Penstemon speciosus George A. Fischer and Irwin H. Johnson 1933-7-12 F 220 Lassen Lassen National Forest 1706 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
  RSA38458  Penstemon speciosus Philip A. Munz 1947-5-19 11877 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  SEINET5329894 Image available Penstemon speciosus F. B. Headley 1915-5-28 3 Lassen Honey Lake Comment
  CAS-BOT-BC239666  Penstemon sudans John Thomas Howell 1974-7-9 50479 Lassen Between Susanville and SW end of Eagle Lake 1828 Comment
  CAS-BOT-BC243410  Penstemon sudans David D. Keck 1930-7-23 953 Lassen Four miles west of Susanville, Sierra Nevada 1463 Comment
  CHSC23482  Penstemon sudans Wayne O. Baum 1971-7-9 71 -86 Lassen E slope of Gallatin Peak. 2072 Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  NY661800  Penstemon sudans H. D. D. Ripley 1943-6-13 5739 Lassen West of Susanville 1371.6 Comment
  NY661802  Penstemon sudans W. W. Eggleston 1911-7-7 7177 Lassen Secret Valley 1330 Comment
  UC1012466  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36 w Susanville; w of Susanville 1371 Comment
  UC1561843  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains 1828 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
  NY763152  Penstemon venustus K. A. Vincent 1987-6-25 4436 Lassen Sierra Nevada, southeast side of Fredonyer Butte; along north side of CA 36 ca. 11.5 miles WSW of Susanville, east of Fredonyer Pass 1585.0 Comment
  SEINET258696  Penstemon venustus K. A. Vincent 1987-6-25 4436 Lassen SE side Fredonyer Butte rdbank along N side CA 36 ca 11 mi WSW of Susanville E of Fredonyer Pass 1585 Comment
  RSA0065395  Perideridia bolanderi M. P. Harthill 1971-6-21 230 Lassen Ravendale. Comment
  UC1004694  Perideridia bolanderi subsp. bolanderi R. C. Bechtel 1954-7-12 Lassen Bridge Creek Camp Comment
  UC1137777  Perideridia bolanderi subsp. bolanderi George A. Fischer and Irwin H. Johnson 1933-7-12 F 210 Lassen Grass Valley Lassen National Forest 1722 Comment
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  SEINET10545980  Perideridia bolanderi subsp. bolanderi Paul Gallian, David B. Dunn 1971-6-2 Gallian 464 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
  CHSC105250  Perideridia kelloggii Lowell Ahart; John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  OBI77201  Persicaria amphibia Anthony Baniaga 2011-7-23 517 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1707 Comment
  SJSU10648  Persicaria amphibia H. L. Buckalew 1961-7-8 Lassen Blue L, Warner Mts 1828 Comment
  CAS-BOT-BC7522  Phacelia adenophora Elmer Ivan Applegate 1897-6-3 895 Lassen Madeline Plains Comment
  CHSC7682  Phacelia adenophora Beverley J. Wise 1969-5-3 49 Lassen 6.1 mi. junction with Hwy 395 on Las. Co. Rd. 338. 1615 Comment
  JEPS17754  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5429 Lassen along Smoke Creek Ranch rd 8 mi e U.S. Hwy. 395 (se part of valley); Secret Valley 1402 Comment
  JEPS27119  Phacelia adenophora Lauramay T. Dempster 1961-6-17 1678 Lassen about 8 mi n Karlo road junction with Hwy. 395 1584 Comment
  RSA38634  Phacelia adenophora P. A. Munz 1947-5-19 11879 Lassen Highway 395, 4 miles south of Madeline. Comment
  RSA75519  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen On Madeline Plain. Comment
  UCD120256  Phacelia adenophora Philip A. Munz 1947-5-19 11881 Lassen Near road, Madeline. 1676 Comment
  UCD120257  Phacelia adenophora Arnold Tiehm; Margaret Williams, Jan Nachlinger 1988-6-2 11701 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas. 1386 Comment
  POM252966  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  RSA83071  Phacelia adenophora Verne Grant, Alva Grant 1947-8-1 8225 Lassen On dike of irrigation ditch southwest of Madeline. Comment
  RSA715550  Phacelia bicolor L. Ahart, John Dittes 2005-6-1 11886 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
  CHSC48469  Phacelia glandulifera Vernon Oswald 1986-5-28 2056 Lassen Road 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  SEINET10935993  Phacelia hastata Mary Susan Taylor 1974-1 Taylor 274 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CDA40427  Phacelia hastata subsp. compacta L. Ahart, J. Dittes 2005-6-2 11950 Lassen Along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, Long Valley, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction. 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
  CHSC66390  Phacelia heterophylla subsp. virgata Vernon H. Oswald; Lowell Ahart 1996-6-17 7776 Lassen Modoc Plateau. Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy.36 ca. 7 mi W of Susanville. Locally abundant along the trail and on brushy slopes at the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  JEPS107814  Phacelia heterophylla subsp. virgata Lowell Ahart, John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction 1512 Comment
  POM203779  Phacelia heterophylla subsp. virgata J. T. Howell 1934-7-10 12553 Lassen Black s Mt. 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
  SEINET5536709  Phacelia humilis N. H. Holmgren, P. K. Holmgren 1978-6-11 8908 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
  UC1259992  Phacelia humilis Jeffrey Huber 1971-6-2 111 Lassen on CA Hwy 139 approx. 30 mi n Susanville 1645 Comment
  UC1537537  Phacelia humilis Gordon H. True Jr. 1938-7-9 907 Lassen near Horse Lake Comment
  UC24376  Phacelia humilis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC68891  Phacelia humilis var. humilis Vernon H. Oswald; Lowell Ahart 1997-6-24 8620 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
  JEPS95000  Phacelia humilis var. humilis Vernon Oswald and Lowell Ahart 1997-6-24 8620 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  POM73344  Phacelia humilis var. humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC48470  Phacelia inundata Vernon Oswald 1986-6-15 2114 Lassen Near Eagle Lake Biological Station. 1584 Comment
  UC764434  Phacelia inundata Verne Grant 1947-9-5 8374 Lassen nw shore of lake by Sam Webb's place (Spaldings); Eagle Lake Comment
  CHSC4813  Phacelia linearis R. Carter 1967-7-7 576 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  UC133088  Phacelia linearis T. S. Brandegee 1892-6-26 Lassen Milford Comment
  UC24433  Phacelia linearis Mrs. R. M. Austin Jun. 1894 Lassen Willow Creek Comment
  RSA129733  Phacelia mutabilis G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 226 Lassen Lassen National Forest. 1723 Comment
  CAS-BOT-BC159066  Phacelia ramosissima var. eremophila Clare B. Hardham 1971-8-22 18400 Lassen North slopes, Diamond Mountain 2133 Comment
  CAS-BOT-BC179912  Phacelia thermalis Peter H. Raven; Otto T. Solbrig 1958-6-17 13297 Lassen Hwy 395, 4.8 miles south of Madeline Comment
  UC1567390  Phacelia thermalis G. Schoolcraft 1989-5-3 1868 Lassen s Karlo; North end of Secret Valley 1341 Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  UC60737  Phleum alpinum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC1776695  Phleum pratense G. Schoolcraft 1994-8-2 2407 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  RSA122928  Phlox diffusa subsp. diffusa L. R. Short 1936-4-28 S- 332 Lassen Lassen National Forest, Burgess Spring Experimental Range 1738 Comment
  UC773907  Phlox gracilis unknown 1936-5-7 S- 343 Lassen Burgess Spring Experimental Range Lassen Forest 1737 Comment
  UC579783  Phlox longifolia subsp. compacta David D. Keck and J. Clausen 1935-6-24 3744 Lassen 2 mi s Ravendale Comment
  CHSC108023  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2011-6-20 17506 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC52648  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  CHSC106569  Phlox stansburyi K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  CHSC64803  Phlox stansburyi Vernon H. Oswald 1995-5-31 6802 Lassen Modoc Plateau. Smoke Creek Rance Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  HSC17069  Phlox stansburyi Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  JEPS107929  Phlox stansburyi Lowell Ahart, John Dittes 2005-6-1 11846 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
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC106965  Phlox stansburyi T. S. Brandegee 1892-6-22 Lassen Honey lake Comment
  CDA40284  Phlox stansburyi T. C. Fuller 1963-6-11 10662 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC61141  Phoenicaulis cheiranthoides Vernon H. Oswald; Lowell Ahart 1993-5-12 5386 Lassen Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. In a meadow on the N side of the road. 1719 Comment
  UC117651  Phoenicaulis cheiranthoides T. S. Brandegee 1892-7-30 Lassen Susanville Comment
  CHSC117545  Phoradendron bolleanum Lowell Ahart; John Dittes 2016-7-13 21136 Lassen 5 yards south of the gate to the pond, along 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
  RSA0027357  Phoradendron juniperinum John F. Emmel 1994-7-17 1332 Lassen Along road near north base of Observation Peak. 1768 Comment
  SEINET7295530 Image available Phragmites John Thomas Howell 1975-1 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia. Comment
  UC1132473  Phragmites australis H. S. Yates 1936-8-11 6063 Lassen near Red Rock; Sierraville Quad. Comment
  CAS-BOT-BC58236  Phyllodoce breweri Ella Dales Cantelow 1941-9-13 3599 Lassen Mt. Lassen Nat. Park. Comment
  UC21954  Phyllodoce breweri M. S. Baker and Frank Nutting 1894-7-20 Lassen Silver Lake Comment
  CAS-BOT-BC60737  Physaria occidentalis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mountain. Susanville. Perkin's Ranch. 2225 Comment
  CHSC60805  Pilularia americana Vernon H. Oswald; Lowell Ahart 1993-6-28 5623 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  CDA601  Pinus washoensis Gordon Leppig, Sylvia Leppig and Juli & Kai Neander 1998-8-18 1065 Lassen Modoc National Forest, Blue Lake Campground Comment
  CHSC27607  Plagiobothrys cognatus Nancy Heiken 1978-7-5 79 Lassen S of Eagle Lake at E shore of Mahogany Lake; meadow at lake margin. 2060 Comment
  JEPS28801  Plagiobothrys cognatus George W. Gillett 1957-9-4 1127 Lassen Widow Lake Lassen Volcanic National Park (e margin of lower lake, near inlet) 2072 Comment
  HSC104018  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 5.5 air mi. NE of Bieber, Ash Creek Wildlife Area, ~100 yds. SE of tall poles 1268 Comment
  JEPS107810  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-2 11954 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
  RSA0039528  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SBBG128883  Plagiobothrys cusickii L. Ahart, J. Dittes 2008-6-20 14914 Lassen vernal pool, ca. 100 yards SW of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest 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
  JEPS87508  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  JEPS94132  Plagiobothrys leptocladus Vernon H. Oswald and Lowell Ahart 1998-5-22 9099 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
  UC1483869  Plagiobothrys leptocladus G. Schoolcraft 1980-5-7 223 Lassen n shore Honey Lake Island; n shore Honey Lake Island 1219 Comment
  RSA0035395  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2008-6-20 14921 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
  RSA337274  Plagiobothrys scouleri Noel Holmgren, Patricia K. Holmgren 1980-7-3 9476 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  RSA39738  Plagiobothrys scouleri var. hispidulus P. A. Munz 1947-5-20 11891 Lassen Milford. 1265 Comment
  CHSC112445  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18771 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121291  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2013-7-22 18873 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD55159  Plagiobothrys tenellus Ellen Dean 2006-5-15 3047 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  POM73080  Plagiobothrys torreyi Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  RSA0017432  Plantago lanceolata Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC30564  Platanthera leucostachys Sori H. Shad 1970-6-19 21 Lassen Above and east of Galatin Beach. 1524 Comment
  POM107756  Platanthera leucostachys Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  SD7498  Platanthera sparsiflora Mrs. R. M. Austin 1880-1 Lassen No further locality information given on label on specimen sheet. Comment
  SEINET10972033  Plectritis congesta Mary Susan Taylor 1974-5-4 Taylor 222 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
  JEPS26656  Plectritis macrocera Lauramay T. Dempster 1961-6-17 1681 Lassen just w of Tule Mountain (Highway 395); Highway 395 1645 Comment
  JEPS36547  Pleiacanthus spinosus W. L. Jepson 1918-8-2 7790 Lassen Long Valley 1371 Comment
  UC1562342  Pleiacanthus spinosus Vernon Oswald and Lowell Ahart 1990-7-25 4395 Lassen 2.2 mi w Highway 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  CHSC99276  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
  HSC10643  Poa bulbosa D. E. Anderson 1969-7-5 5000 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 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
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 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
  RSA115224  Poa compressa Beecher Crampton 1956-7-17 3736 Lassen Ca. 2.5 miles north of Emigrant Gap. 1372 Comment
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Apr 28 2013
  RSA719872  Poa compressa M. A. Vincent, K. Levings 2006-7-29 12903 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  UC589933  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (bank of Ash Creek) Comment
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Jun 24 2009
  CHSC112474  Poa cusickii subsp. cusickii Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18780 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
  CAS-BOT-BC247256  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadow 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
  SEINET10523355  Poa pratensis Billy Joe Cox 1971-6-11 Cox 3188 Lassen 1 mi W of Westwood, on CA Hwy 36; scattered Pinus ponderosa, Pseudotsuga menziesii, Arctostaphylos, and Ceanothus all volcanic soils, rather flat & arid. Comment
  CAS-BOT-BC255025  Poa secunda Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 Lassen 13.5 miles E of Susanville Comment
  CAS-BOT-BC236256  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 miles W of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CHSC100869  Poa secunda subsp. juncifolia L. P. Janeway 2008-8-2 9529 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  UCD92408  Poa secunda subsp. juncifolia R. Tofsrud 1947-7-24 225 Lassen Between Ravendale and Thermos. Comment
  CAS-BOT-BC236184  Poa secunda subsp. secunda John Thomas Howell 1976-7-20 52008 Lassen About 5 miles W of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD91653  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True, Margaret Williams 1973-5-12 49196 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  UCD92016  Poa secunda subsp. secunda A. H. Shunk 1923-1 14 Lassen Hayden Hill. Comment
  HSC68792  Poa wheeleri Gary Schoolcraft 1979-7-3 112 Lassen 4.3 mi. up Observational Lookout Rd. from Horne Ranch Rd. 2134 Comment
  UC1024824  Poa wheeleri Leo Whitney 1935-6-13 3240 Lassen Camp 10 Fruit Grower's Supply Company Comment
  UC1136985  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experimental Range; Lassen Forest 1767 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
  NY963445  Polemonium micranthum A. Tiehm 1986-5-14 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill 1707 Comment
  CHSC96705  Polemonium occidentale Gordon Leppig 1998-7-12 949 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CAS-BOT-BC74163  Polyctenium fremontii G. Schoolcraft 1998-5-19 2707 Lassen South end Mud Flat. 1341 Comment
  CAS-BOT-BC74171  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Highway 395. 1609 Comment
  HSC63923  Polyctenium fremontii Teresa Prendusi, M. Meyer 1980-4-30 Lassen Along Hwy. 395, 3 mi. SE of Ravendale 1616 Comment
  RSA487941  Polyctenium fremontii A. Tiehm, Jan Nachlinger, M. Williams 1988-6-2 11703 Lassen 6.6 miles north of the Wendel Rd. on Hey 395 from Susanville to Alturas. 1348 Comment
  SEINET3197107 Image available Polyctenium fremontii var. confertum Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1610 Comment
  JEPS94355  Polyctenium fremontii var. fremontii Vernon H. Oswald and Lowell Ahart 1997-5-7 8405 Lassen 1.7 ni e of Highway 395 (Mud Flat along Smoke Creek Ranch Road); Mud Flat, Smoke Creek Ranch Road 1356 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
  NY404581  Polygonum amphibium var. emersum G. H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch, Honey Lake Valley Comment
  UC1536797  Polygonum amphibium var. emersum Gordon H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch Honey Lake Valley Comment
  CAS-BOT-BC419766  Polygonum argyrocoleon Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pittville 1219 Comment
  UC1136193  Polygonum bistortoides A. Simontacchi 1940-5-17 741 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC725581  Polygonum bistortoides A. A. Heller 1938-6-4 15141 Lassen 2 mi w Westwood Comment
  JEPS31669  Polygonum convolvulus W. L. Jepson 1939-8-11 19376 Lassen Milford 1280 Comment
  CAS-BOT-BC414490  Polygonum douglasii John Thomas Howell 1974-7-10 50562 Lassen Elysian Valley 1325 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
  UC1553395  Polygonum douglasii subsp. spergulariiforme G. Schoolcraft 1988-6-15 1814 Lassen 16 mi e Adin; Ash Valley RNA/AEC 1584 Comment
  RSA128554  Polygonum hydropiper Peter H. Raven 1954-9-2 8115 Lassen Bed of St. Helena Creek at Mirabel Park, 4.8 miles S of Middletown Comment
  SEINET11933855  Polygonum kelloggii N. H. Holmgren, Holmgren, P. K. 1980-1 9466 Lassen Madeline Plains, along US Hwy 395, 5.6 km S of Madeline, T36N, R13E, S9 1620 Comment
  CAS-BOT-BC418534  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail 1905 Comment
  UC1603209  Polygonum polygaloides J. Guardino 1993-6-9 281 B Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603210  Polygonum polygaloides J. Guardino 1993-6-8 256 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603213  Polygonum polygaloides J. Guardino 1993-5-22 167 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CHSC78483  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald 2000-7-31 9948 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  HSC82191  Polygonum polygaloides subsp. confertiflorum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6041 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS120876  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18732 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
  JEPS83273  Polygonum polygaloides subsp. confertiflorum J. D. Jokerst 1983-7-24 1883 Lassen Madeline Plains nw of Ravendale; Madeline Plains 1584 Comment
  UC1112251  Polygonum polygaloides subsp. confertiflorum R. C. Bacigalupi with S. Galen Smith 1957-6-28 6003 Lassen ditch along Hwy 395 3.1 mi s Madeline; Madeline Plains 1615 Comment
  UC1191311  Polygonum polygaloides subsp. confertiflorum Herbert L. Mason Jul 29 1955-Jul 31 1955 14639 Lassen Pine Creek Flat Comment
  UC773864  Polygonum polygaloides subsp. kelloggii L. R. Short and Wm. Gansberg 1936-6-8 S- 390 Lassen Burgess Spring Experimental Range Lassen <National> Forest 1743 Comment
  CAS-BOT-BC420158  Polygonum sawatchense subsp. sawatchense John Thomas Howell 1934-7-9 12528 Lassen Harvey Valley Comment
  UC1609438  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd (Lassen A1) 0.5 mi w Spaulding Tract Rd. (Rd. 518, 33N89) (ca 3 mi w of Eagle Lake) 1810 Comment
  CAS-BOT-BC420159  Polygonum sawatchense subsp. sawatchense G. Schoolcraft 1988-6-15 1814 Lassen Ash Valley RNA/ACEC 16 miles east of Adin 1584 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
  CHSC99731  Porterella carnosula Lowell Ahart; John Dittes 2008-6-20 14963 Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS17746  Porterella carnosula Rimo Bacigalupi with G. T. Robbins 1955-7-20 5408 Lassen 4.4 mi s Patterson Ranger Station (Long Valley, southern end of Warner Mts., Modoc National Forest); Modoc National Forest, s end of Warner Mts. 2057 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
  HSC63956  Porterella carnosula Teresa Prendusi 1980-7-1 Lassen Champs Flat, ca. 8 mi. W of N end of Eagle Lake. 1677 Comment
  SEINET10460829  Porterella carnosula Howell 1934-7-7 Howell 12466 Lassen Near Feather Lake Comment
  SEINET10460836  Porterella carnosula Rimo Bacigalupi Bacigalupi 6023 Lassen In rich peaty black soil of ditches along U.S. Highway 395, Madeline Plains, 3.1 miles south of Madeline 1615 Comment
  CHSC4850  Potamogeton R. Carter 1967-7-13 594 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UC1099904  Potamogeton amplifolius Verne Grant, Irving Schneider 1947-8-24 8269 Lassen nw shore of Blue Lake (northern Lassen County) Comment
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  CHSC4804  Potamogeton filiformis R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  UCR196279  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  RSA748317  Potamogeton natans K. M. Meyer, A. Townesmith 2007-7-21 146 Lassen Lassen National Forest. 1.3 mile on Road 10 to Silver Lake off Road 110. Pine forest, lake. 1963 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
  UC1100078  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-29 8184 Lassen e end of Tule Lake Comment
  JEPS28699  Potamogeton richardsonii George W. Gillett 1957-7-26 919 Lassen on e side of Butte Lake (near island, near shore); Lassen Volcanic National Park 1844 Comment
  UC60849  Potamogeton striatus J. B. Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley, Amedee Comment
  UC60850  Potamogeton zosteriformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3356 Lassen near Amedee; Honey Lake Valley Comment
  CHSC68764  Potentilla biennis Vernon H. Oswald; Lowell Ahart 1997-5-27 8487 Lassen East side of Hwy. 139 at a small pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  CAS-BOT-BC540030  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  UC1136906  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1767 Comment
  HSC18787  Potentilla gracilis var. fastigiata Jim Vaughn 1956-8-25 Lassen Drakesbad, Mt. Lassen National Park 1738 Comment
  SBBG3009  Potentilla gracilis var. flabelliformis H. and M. Dearing 1938-7-1 2240 Lassen W of Susanville Comment
  CAS-BOT-BC158476  Potentilla gracilis var. gracilis A. M. Vollmer; L. Beane 1953-7-1 81 Lassen Along Halls Flat road beginning 6 miles west of Susanville to McArthur 1554 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
  UC1128270  Potentilla millefolia Robert W. Gardner 1937-6-18 G- 9 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  SJSU5819  Poteridium annuum J. W. Tilden 1960-6-27 1503 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  SJSU13984  Prunus andersonii N. A. Hopkins 1988-5-16 1400 Lassen Scott Rd by Long Valley Cr c. 3 mi N of Hwy 70 1432 Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  CHSC23523  Prunus emarginata Wayne O. Baum 1971-7-7 71 -83 Lassen N. slope of Gallatin Peak. 2011 Comment
  CAS-BOT-BC154771  Prunus virginiana var. demissa L. B. Barlow 1967-7-1 63 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road 1554 Comment
  CAS-BOT-BC154772  Prunus virginiana var. demissa Alice Eastwood; John Thomas Howell 1940-6-11 7994 Lassen Nubieber Comment
  CHSC66398  Prunus virginiana var. demissa Vernon H. Oswald; Lowell Ahart 1996-6-17 7767 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 Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 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
  JEPS127720  Pseudoroegneria spicata Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -175 Lassen 171 west from 385 south. After the second tight switchback the population is off the road downslope. Comment
  CAS-BOT-BC80092  Pseudotsuga menziesii John Thomas Howell 1976-7-19 51965 Lassen on Gold Run Creek southwest of Susanville 1386 Comment
  SEINET5345383  Pseudotsuga menziesii var. menziesii D. A. Charlet 1996-7-8 2286 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  JEPS127273  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2016-7-13 21110 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  RSA647519  Puccinellia nuttalliana Marion P. Harthill 1972-6-17 801 Lassen Standish. Comment
  SEINET222545 Image available Puccinellia nuttalliana Noel H. Holmgren, Patricia Holmgren 1978-6-13 8939 Lassen 2.7 km (1.7mi) north-west of Wendel. 1250 Comment
  CHSC23564  Purshia tridentata W. O. Baum 1971-6-28 42 Lassen Along fire trail on e slope of Gallatin Peak. 1920 Comment
  SEINET10542465  Purshia tridentata Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2592 Lassen Ca 6 miles s of susanville at junction of us hwy 395 and cal hwy 36 to Susanville, near johnstonville. Assoc.; Purshia-artemesia 1311 Comment
  CAS-BOT-BC147821  Purshia tridentata var. tridentata Alice Eastwood; John Thomas Howell 1940-6-16 8341 Lassen Janesville Comment
  CAS-BOT-BC147822  Purshia tridentata var. tridentata Margaret Williams; Steven Williams 1974-7-26 74 -L-19 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  RSA86630  Purshia tridentata var. tridentata F. W. Peirson 1932-7-20 10355 Lassen 20 miles SE of Susanville. Comment
  UC1128540  Purshia tridentata var. tridentata C. W. Hanks 1934-9-26 91 Lassen w side Long Valley (near Plumas National Forest); Sierraville Quad. 1432 Comment
  UC12421  Purshia tridentata var. tridentata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC773873  Purshia tridentata var. tridentata L. R. Short and Wm. Gansberg 1936-7-9 S- 482 Lassen Burgess Spring Experimental Range; Lassen National Forest 1792 Comment
  CAS-BOT-BC462754  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CHSC66723  Pyrola picta Vernon H. Oswald; Lowell Ahart 1996-8-1 8130 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. 2011 Comment
  UC70346  Pyrola picta Milo S. Baker 1890-1 Lassen Milford Comment
  SD108109  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Highway 395 Comment
  RSA518917  Quercus kelloggii George K. Helmkamp 1990-10-4 M- 8 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  CAS-BOT-BC379463  Ranunculus alismifolius Louella Bass 1973-4-16 18 Lassen Elysian Valley 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
  JEPS93978  Ranunculus alismifolius var. alismifolius Vernon H. Oswald 1998-6-22 9230 Lassen ca. 18 mi. n. Westwood (Champs Flat Rd. (A-21) 1.8 mi. n. of Hwy. 44) 1749 Comment
  UC1608998  Ranunculus alismifolius var. alismifolius Vernon H. Oswald and Lowell Ahart 1993-6-3 5470 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy 44 (between Poison Lake and Susanville) 1749 Comment
  HSC18114  Ranunculus alismifolius var. hartwegii R. J. Vernimen 1963-5-4 49 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
  CHSC110303  Ranunculus aquatilis var. diffusus L. P. Janeway; B. Castro 2012-7-2 10932 Lassen Modoc Plateau. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1600 Comment
  CHSC27662  Ranunculus cymbalaria var. saximontanus Robert A. Schlising 1978-7-27 3320 Lassen E side of Eagle Lake. Pasture. Comment
  CHSC6247  Ranunculus cymbalaria var. saximontanus M. West 1946-7-2 Lassen Pine Creek, Eagle Lake. 1584 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
  CHSC14062  Ranunculus glaberrimus var. ellipticus Tim Manolis 1974-2-16 16 Lassen 2 1/4 mi e of Eagle Lake Field Station. Comment
  UC1776660  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-4-2 2464 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  CHSC13795  Ranunculus macounii Cathy Crittenden 1970-7-8 37 Lassen Lower Murrer's Meadow along Willow Creek. 1463 Comment
  UC1924217  Ranunculus occidentalis Debra Valov 2004-6-9 2004266 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC69597  Ranunculus occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 3379 Lassen Honey Lake Valley Comment
  RSA0062681  Ranunculus occidentalis Marion P. Harthill 1972-6-17 825 Lassen Madeline. 1676 Comment
  NY494767  Ranunculus occidentalis var. dissectus H. D. D. Ripley 1943-6-13 5682 Lassen Near Milford 1264.9 Comment
  CDA24351  Ranunculus sceleratus var. multifidus D. L. Haws 1974-5-3 Lassen Railroad right-of-way near Susanville. 0 Comment
  CDA3488  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville. 0 Comment
  UC1587100  Rhaponticum repens G. Schoolcraft 1991-7-31 2203 Lassen just n of Hall Spring; Shinn Mts. 1706 Comment
  JEPS124781 Image available Rhus aromatica C. Meek 1969-7-9 85 Lassen On south facing slope overlooking the Pitt Gorge off Hi #299; 2 mi West of Fall River Mills. Comment
  CHSC13607  Ribes Lynn R Thomas 1969-4-17 93 Lassen 100 yds up slope w of back of Lassen Memorial Hospital, Susanville. Boundary between T29N and T30N. 1310 Comment
  SBBG2740  Ribes aureum H. and M. Dearing 1939-6-6 3563 Lassen Pitt River, Bieber Comment
  UC79702  Ribes aureum Walter E. Bryant Lassen Comment
  CHSC12425  Ribes cereum Anne Linda Brisk 1969-6-20 15 Lassen Found 1/4 mi NE ELBS in flat, basaltic, rocky area. 1554 Comment
  CHSC21360  Ribes cereum M. S. Taylor 1974-5-4 219 Lassen Scattered ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  NY455007  Ribes cereum B. M. Bartholomew 1988-7-22 4503 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  CHSC86948  Ribes cereum var. cereum L. P. Janeway 2001-6-19 7188 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  CAS-BOT-BC169008  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  SEINET10838520  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 309 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC186149  Ribes roezlii var. roezlii George W. Gillett 1957-7-26 917 Lassen Butte Lake 1844 Comment
  CHSC80652  Ribes velutinum V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10033 Lassen Northeast of Doyle in the Fort Sage Mtns, trailhead to top of mountain from the end of a 4WD road. 1798 Comment
  UCR17277  Ribes velutinum Frank C. Vasek 1975-7-11 750711- 29 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UCR248242  Ribes velutinum J. R. Keck Jr. 1977-8-10 s.n. Lassen Lassen National Forest, near Puls Camp east of Blacks Mountain 1829 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
  JEPS34911  Rigiopappus leptocladus L. S. Smith 1920-6-15 Lassen McKenzie spring Bieber Range, McKenzie spring 1310 Comment
  SEINET3148575  Rigiopappus leptocladus L. S. Rose 1940-6-11 40507 Lassen 8 mi W of Nubieber 1219 Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  CHSC84873  Rorippa curvisiliqua Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 354 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  JEPS119648  Rorippa curvisiliqua Lowell Ahart, John Dittes 2012-7-9 18292 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0065538  Rorippa curvisiliqua Marion P. Harthill 1971-6-20 216 Lassen Susanville. Comment
  RSA431533  Rorippa curvisiliqua Rockwell s.n. Lassen Eagle Lake. Comment
  CHSC113059  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2013-7-22 18855 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC71385  Rorippa curvisiliqua var. orientalis V. Oswald; B. Corbin, M. Dolan, V. Sanger, G. Schoolcraft 1998-7-13 9260 Lassen Moll Reservoir in Ash Valley southeast of Adin. Along the edge of the reservoir. 1615 Comment
  CHSC25060  Rorippa nasturtium-aquaticum L. B. Barlow 1967-6-24 40 Lassen Meadow 4 mi. east of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 Comment
  CHSC30577  Rorippa nasturtium-aquaticum Sori H. Shad 1970-6-24 42 Lassen In upper Murrer's Meadow, in irrigation ditch. 1524 Comment
  CHSC4261  Rorippa nasturtium-aquaticum K. R. Stern 1967-6-24 2405 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  NY661122  Rorippa sinuata B. Corbin 2002-6-4 1079 Lassen Deep Creek crossing of Highway 395. 1350.3 Comment
  CHSC4976  Rosa woodsii subsp. ultramontana D. L. Stites 1967-6-25 58 Lassen 2 mi w of Eagle Lake Biology Station at Pelical Point. 1524 Comment
  SBBG3088  Rosa woodsii subsp. ultramontana H. and M. Dearing 1939-6-6 3562 Lassen Bieber Comment
  JEPS45632  Rosa woodsii var. ultramontana Brown and Wieslander 1928-6-16 Lassen Eagle Lake 1584 Comment
  JEPS45639  Rosa woodsii var. ultramontana W. L. Jepson 1918-8-3 7801 Lassen Honey Lake Valley 1219 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
  CHSC68870  Rubus parviflorus Vernon Oswald; Lowell Ahart 1997-6-24 8614 Lassen South of Susanville on the north side of Diamond Mtn. along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  CAS-BOT-BC421953  Rumex acetosella Paul Gallian; B. J. Cox 1971-6-2 482 Lassen 5 miles South of Milford near Honey Lake on U.S. Hwy. 395 1249 Comment
  CDA2904  Rumex crispus Gordon Leppig 1998-7-12 962 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  UC452560  Rumex crispus Franklin P. Nutting Lassen near Lookout; Big Valley Comment
  CAS-BOT-BC433485  Rumex fueginus John Thomas Howell 1934-7-8 12485 Lassen Spalding's, Eagle Lake Comment
  CHSC76101  Rumex fueginus Lowell Ahart; Vernon H. Oswald 1999-9-13 8214 Lassen On the edge of a flooded canal, just southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC748316  Rumex maritimus Annie M. Alexander and Louise Kellogg 1946-8-11 5154 A Lassen nw end Eagle Lake (Sam Webb's Hunting Cabins) Comment
  CAS-BOT-BC109328  Rumex paucifolius Geo. A. Fisher 1928-6-23 32 Lassen Halls Flat. 1615 Comment
  CAS-BOT-BC109329  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA. 1554 Comment
  CAS-BOT-BC433860  Rumex salicifolius B. Bartholomew; B. Anderson 1988-7-22 4497 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  UC1036083  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5152 Lassen 4 to 6 mi s Madeline Comment
  CHSC65318  Rumex salicifolius var. salicifolius Vernon H. Oswald; Lowell Ahart 1995-8-14 7188 Lassen Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy.395, N of Susanville. 1645 Comment
  JEPS121294  Rumex triangulivalvis Lowell Ahart, John Dittes 2013-7-22 18867 Lassen 30 yards S of the man-made pond, about 120 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC109417  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia. Comment
  UCD101656  Rumex venosus R. N. Raynor 1939-5-31 s.n. Lassen Milford, Honey Lake Valley. Comment
  SEINET4176394  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  CHSC13691  Sagittaria cuneata Patrick Balch 1935-7-17 Lassen Willow Creek Springs. 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
  JEPS88426  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1996-8-1 8107 Lassen receding shore of the Mountain Meadows Reservoir ne Indian Ole Dam (sw of Westwood); Mountain Meadows Reservoir, ne of Indian Ole Dam 1539 Comment
  JEPS124719 Image available Sagittaria cuneata Rechen 1964-6-30 87 Lassen 1 mile west of junction of hwy 299 and Lassen AZ on 299. Comment
  CAS-BOT-BC132697  Salix John Thomas Howell 1976-7-20 52017 Lassen Bottom flats along Willard Creek near its confluene with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  NY188399  Salix eriocephala subsp. mackenzieana R. D. Dorn 1972-6-2 1492 Lassen Willow Creek, about 15 miles SSE of Adin 1524.0 Comment
  CHSC91187  Salix exigua Lowell Ahart; John Dittes 2005-6-1 11905 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS114626  Salix exigua Lowell Ahart, John Dittes 2008-6-22 15043 Lassen On the bottom of a deep ditch, on the south side of the road levee, open meadow area, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  SEINET3260826  Salix exigua Marcus E. Jones 1897-6-25 Lassen Susanville. 1340 Comment
  JEPS107798  Salix jepsonii Lowell Ahart, John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  POM209471  Salix jepsonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 682 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  JEPS114627  Salix lasiandra subsp. lasiandra Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  CAS-BOT-BC128170  Salix lasiandra var. lasiandra John Thomas Howell; Gordon H. True 1973-8-1 50149 Lassen Transition Zone forest in areas of granitic rock, Gold Run Creek road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  POM209555  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 684 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  SEINET10417120  Salix lucida subsp. caudata G. Schoolcraft 1995-5-14 2477 Lassen W of Susan Hills subdivision, SW of Susanville. 1372 Comment
  CHSC93562  Salix lucida subsp. lasiandra Lowell Ahart; John Dittes 2005-6-2 11925 Lassen Long Valley, along a small ditch, 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
  CHSC99729  Salix lucida subsp. lasiandra Lowell Ahart; John Dittes 2008-6-22 15044 Lassen On the bottom of a deep ditch, on the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber. 1257 Comment
  CAS-BOT-BC126131  Salix scouleriana John Thomas Howell; Gordon H. True 1973-7-31 50041 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  CDA36352  Salsola gobicola B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  JEPS94087  Salsola tragus Vernon H. Oswald and Lowell Ahart 1998-9-8 9582 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on county Rd. 91 (Bieber-Lookout Rd.)); Ash Creek and Big Swamp 1258 Comment
  JEPS94499  Salvia aethiopis Vernon H. Oswald and Lowell Ahart 1997-5-27 8482 Lassen just n of Susanville (w side of Highway 139 at Lassen Community College); Lassen Community College, Highway 139 1310 Comment
  UC669627  Salvia aethiopis Vesta Holt 1944-6-19 Lassen roadside near Susanville Comment
  CDA40944  Salvia dorrii subsp. dorrii Vernon H. Oswald & Lowell Ahart 1998-6-4 9145 Lassen Spur road on north side of Red Rock Road, 0.6 mile east of Highway 395, south of Constantia. 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
  CHSC5226  Sambucus melanocarpa A. Santos 1946-6-17 Lassen E side of Eagle Lake. 1615 Comment
  CHSC12487  Sambucus mexicana Carol Weld 1969-6-26 45 Lassen 7.8 miles SW of Eagle Lake Field Station. 1584 Comment
  UC773940  Sambucus mexicana L. R. Short and J. Warren 1936-7-28 S- 490 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  UC1441325  Sanicula tuberosa David H. French 1968-6-2 2880 Lassen about 5 mi e of Westwood (near State Hwy 36) Comment
  SEINET3239873  Santalaceae R. L. Mathiasen 2010-1 1018 Lassen 16 km W of north entrance to Lassen Nat. Park on Rte. 44 1380 Comment
  SEINET3239994  Santalaceae R. L. Mathiasen 2010-1 1033 Lassen 0.3 km W of Fredonyer Pass on Rte. 36. 1660 Comment
  CAS-BOT-BC110336  Sarcobatus vermiculatus Louella Bass 1982-6-20 s.n. Lassen West of Karlo. Comment
  CDA23526  Sarcobatus vermiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 A Lassen Wendel. 0 Comment
  NY540267  Sarcobatus vermiculatus J. T. Howell 1975-7-23 51414 Lassen Alkaline flat on Highway 395 about 5 miles southeast of Doyle 1310.6 Comment
  RSA79261  Sarcobatus vermiculatus E. K. Balls 1952-10-10 18136 Lassen 5.2 miles W of Standish, Hwy 395, Susanville to Alturas. 1250 Comment
  UC7509  Sarcobatus vermiculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3328 Lassen Honey Lake Valley 1219 Comment
  JEPS47551  Saxifraga oregana Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  RSA59813  Saxifraga oregana E. K. Balls 1950-5-19 14771 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  RSA719710  Schoenoplectus acutus Michael A. Vincent, K. Levings 2006-7-29 12918 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  CHSC91792  Schoenoplectus acutus var. occidentalis L. P. Janeway 2005-8-27 8525 Lassen High Cascade Range. Northwest shore of Eagle Lake; east end of Sandy Beach, west side of Rocky Point. 1550 Comment
  RSA0009705  Schoenoplectus acutus var. occidentalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  RSA719709  Schoenoplectus pungens Michael A. Vincent, K. Levings 2006-7-29 12919 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  CHSC63613  Schoenoplectus subterminalis Vernon H. Oswald; Helen Ost, John Ost, M. L. Mini 1994-8-6 6446 Lassen Caribou Wilderness from the Hay Meadow trailhead N of Chester, at an un-named lake on the S edge of the trail between Hidden Lakes and Long Lake. 2103 Comment
  CHSC61594  Scirpus microcarpus Arthur G. Barrett 1915-8-18 35 Lassen Plumas National Forest. Laufman Ranger Station. 1463 Comment
  JEPS87446  Scirpus nevadensis Vernon H. Oswald and Lowell Ahart 1993-6-14 5521 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake 1566 Comment
  RSA783686  Scirpus nevadensis R. R. Halse 2010-8-25 8087 Lassen Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake. 1559 Comment
  UC1100879  Scirpus nevadensis Malcolm A. Nobs, S. Galen Smith 1949-7-22 1073 Lassen ne side Eagle Lake; ne side Eagle Lake Comment
  UC1100881  Scirpus nevadensis Verne Grant and Irving Schneider 1947-9-5 8376 Lassen nw shore Eagle Lake (by Sam Webb's place; Spaulding); nw shore Eagle Lake by Sam Webb's place Comment
  CHSC66422  Scribneria bolanderi Vernon H. Oswald; Lowell Ahart 1996-6-17 7804 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On a flat on the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  JEPS11413  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  UC767449  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  SEINET8020059  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  SEINET8020068  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CAS-BOT-BC5845  Scutellaria holmgreniorum Noel Herman Holmgren; Patricia K. Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy 395 via Rye Patch Canyon 1580 Comment
  CAS-BOT-BC214261  Scutellaria nana G. Schoolcraft 1999-7-7 2855 Lassen N. end of Eagle Lake just ne. of Eagle Lake Campground 1584 Comment
  CAS-BOT-BC214262  Scutellaria nana G. Schoolcraft 1986-6-18 1630 Lassen S. side of Smoke Creek between Shinn & Smoke Creek Ranches 1493 Comment
  CAS-BOT-BC214268  Scutellaria nana Richard Olmstead 1984-6-27 584 Lassen Rye Patch Canyon Rd., 13.2 mi E of US 395, turnoff ca 14 mi. S of Ravendale 1548 Comment
  CAS-BOT-BC214269  Scutellaria nana John Thomas Howell 1934-6-10 11879 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  SEINET13947826 Image available Scutellaria nana Clarence R. Quick 1964-1 64 -92 Lassen Cal Mt. E of Poison Lake; ca 5800 ft alt. 1768 Comment
  SEINET13947834 Image available Scutellaria nana Noel H. Holmgren, Patricia K. Holmgren 1980-1 9524 Lassen Upper Smoke Creek drainage, 21.9 km from US Hwy 395 via Rye Patch Canyon, 24 km airline distance SE of Ravendale; 1580 m alt., T33N, R16E, SEC36 1580 Comment
  CAS-BOT-BC240087  Secale cereale David D. Keck; J. Clausen 1935-6-24 3750 Lassen 2 mi. S. of Ravendale 1464 Comment
  RSA647520  Secale cereale Marion P. Harthill 1972-6-16 788 Lassen Doyle 1372 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
  UC11232  Sedum stenopetalum M. S. Baker and Frank Nutting 1894-7-7 Lassen Harvey's Ranch Comment
  SEINET10801294  Senecio aronicoides Katherine L. Morris, David B. Dunn; Melvin L. Conrad 1973-5-25 Morris 230 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
  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
  HSC95295  Senecio hydrophilus Gordon Leppig, J. Cromwell 1997-7-27 615 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UCD135547  Senecio integerrimus Grady L. Webster 1989-5-13 7723 Lassen 2.5 miles east of Beckworth Pass. 1493 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
  JEPS85743  Senecio integerrimus var. exaltatus Roy E. Buck and Robert A. Price 1988-6-26 1031 Lassen ca 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  UC1063253  Senecio integerrimus var. exaltatus A. Simontacchi 1940-5-15 712 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quad. 1699 Comment
  RSA0124944  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14 .772 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  CAS-BOT-BC363984  Senecio integerrimus var. major John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49176 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC26149  Senecio triangularis Detzer; Sacks 1977-7-24 1 Lassen Along streambank, ca. 3 mi se of Milford, .5 mi. se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  UC1587031  Sidalcea glaucescens G. Schoolcraft 1991-7-30 2198 Lassen East slope of Widow Mountain 1859 Comment
  UC1924263  Sidalcea glaucescens Debra Valov 2004-5-31 2004225 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC30043  Sidalcea oregana Cindy Prouty 1978-7-27 7 Lassen Little Antelope Valley, W of Eagle L. 1792 Comment
  UC1037274  Sidalcea oregana Leo Whitney 1934-7-10 1760 Lassen 14 mi w of Eagle Lake (near Harvey Valley Spring, Lassen National Forest, Harvey Valley); Lassen National Forest, Harvey Valley 1737 Comment
  POM230480  Sidalcea oregana subsp. oregana D. D. Keck, Jens Clausen 1935-6-24 3740 Lassen 2 miles S. of Ravendale, Comment
  UC871518  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen 1 mi w Bieber (overflow of the Pitt River); Pitt River, w of Bieber Comment
  POM260184  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen Overflow of Pitt River, 1 mile W of Bieber 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
  SEINET9005527  Sidalcea oregana var. spicata C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1483814  Silene bernardina G. Schoolcraft 1979-6-7 129 Lassen northern Skidaddle Mountains 2011 Comment
  UC1523760  Silene bernardina Gary Schoolcraft 1982-6-23 727 Lassen Ft. Sage Mts. 1828 Comment
  JEPS50913  Silene douglasii Brown and Wieslander 1922-7-23 33 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  UC8440  Silene douglasii M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  CHSC65097  Silene menziesii Vernon H. Oswald; Lowell Ahart 1995-7-24 7137 Lassen High Cascade Range. Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. At the NE corner of the impoundment on Pine Creek. 1905 Comment
  CHSC89312  Silene nuda G. Douglas Barbe 1974-8-20 1936 Lassen Upper Long Valley. Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS123843  Silene nuda Lowell Ahart, John Dittes 2015-7-14 20334 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC1618235  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ca 1.5 mi e Diamond Peak (ca 10 airmi due s of Susanville, ridge of Diamond Mts.); ridge of Diamond Mts., e of Diamond Peak 2255 Comment
  CAS-BOT-BC389548  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  CAS-BOT-BC389549  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  JEPS50951  Silene occidentalis subsp. occidentalis Brown and Wieslander 1922-7-23 32 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  CHSC91318  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
  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
  CAS-BOT-BC75080  Sisymbrium altissimum Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16333 Lassen 13.5 miles east of Susanville. Comment
  SEINET10448851  Sisymbrium altissimum Billy Joe Cox, Paul Gallian 1971-2-2 Cox 2583 Lassen 6 mi. S. Of adin; along calif. 139 Right-of-way; in basalt-clay, grassy road bank; artemesia juniper assoc. 1372 Comment
  CHSC66274  Sisyrinchium bellum Vernon H. Oswald; Lowell Ahart 1996-6-24 7875 .1 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Bordering Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS88552  Sisyrinchium bellum Vernon H. Oswald and Lowell Ahart 1996-6-24 7875 .1 Lassen ca 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, in meadow bordering Papoose Creek where it leaves the n end of the meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  UC1032501  Sisyrinchium bellum A. Simontacchi 1940-6-15 863 Lassen 2.3 mi ssw of Black Mountain; Lassen National Forest 1798 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
  UCD138789  Sisyrinchium bellum Gerald Dickinson 1963-7-2 71 Lassen east of Willow Creek campground, south of Hayden Hill, State Highway 139. 1219 Comment
  UC1542947  Sisyrinchium idahoense var. idahoense G. Schoolcraft 1987-6-23 1749 Lassen along Ash Valley Rd. Ash Valley 1554 Comment
  UC21380  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  CDA38566  Sium suave F. A. Taylor 1933-7-5 s.n. Lassen Bieber. 0 Comment
  UC1191779  Solanum triflorum Verne Grant, Irving Schneider 1947-8-1 8234 Lassen east end of Tule Lake Tule Lake Comment
  UCR67459  Solidago occidentalis George K. Helmkamp 1990-9-23 G- 10 Lassen north of Ravendale 1677 Comment
  POM38169  Sonchus asper Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CHSC66869  Sparganium erectum subsp. stoloniferum Vernon H. Oswald; Lowell Ahart 1996-9-10 8273 Lassen Mountain Meadows Reservoir SW of Westwood. Along the northwest shore of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  NY482319  Spergularia diandra G. Schoolcraft 1998-6-8 2734 Lassen N. base of Ft. Sage Mtns. 1249.7 Comment
  HSC68557  Sphaeromeria cana Gary Schoolcraft 1979-7-6 127 Lassen N side of Skedaddle Mtns. 1997 Comment
  CHSC93240  Sphaeromeria potentilloides var. potentilloides John Dittes; Scott Chamberlain 2004-6-28 1013 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-miles east of Plumas County line; meadow. 1445 Comment
  RSA0008983  Sphaeromeria potentilloides var. potentilloides Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC13098  Spiraea densiflora M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  RSA18166  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  CHSC61074  Spiranthes porrifolia Vernon H. Oswald 1993-8-3 5754 Lassen Cooper Swamp located E of Siver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  HSC95184  Spiranthes porrifolia Gordon Leppig 1998-8-17 1038 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS64515  Spiranthes romanzoffiana Brown and Wieslander 1922-7-30 49 Lassen Martin Sprs. Eagle Lake Comment
  CHSC5277  Stachys ajugoides var. rigida P. Balch 1955-7-17 Lassen Papoose Creek, near Gallatin's. Eagle Lake. 1615 Comment
  UC1483862  Stachys ajugoides var. rigida G. Schoolcraft 1980-8-13 348 Lassen n side Diamond Mtn. 1950 Comment
  NY608067  Stanleya viridiflora G. Schoolcraft 1998-7-14 2763 Lassen Along Karlo Road, 1 mile south of Biscas Reservoir Road. 1356.4 Comment
  SEINET11604939  Stanleya viridiflora L. Bass 1982-7-25 10 -82 Lassen Near Karlo, ca 12 miles N of Litchfield. 1356 Comment
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  SEINET5337330  Stellaria longipes C. G. Gulling 1905-1 1551 Lassen Big Meadows Comment
  CHSC76747  Stellaria longipes var. longipes L. P. Janeway 1999-9-5 6577 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. On south edge of pond. 1900 Comment
  UC1755281 Image available Stenotus lanuginosus var. lanuginosus Dean W. Taylor 2007-6-14 20127 Lassen Upper Gooch Valley, Forest Road 35N05 (County Road 22) 0.3 miles north of junction with Forest Road 34N45 1889 Comment
  CAS-BOT-BC375596  Stephanomeria lactucina Alice Eastwood 1912-8-22 s.n. Lassen Trail from Morgans Springs to Lassen Butte Region Comment
  SEINET10474966  Stephanomeria spinosa Mary Susan Taylor 1982-8-19 Taylor 5020 Lassen T22N R17E sw/nw sec 5. Beckwourth Pass quad. Along dirt rd (old RR tracks), s of and paralleling Hwy 70, just se of Beckwourth Pass. Sagebrush Scrub; 5200 ft. Dry sandy soil. 1585 Comment
  CAS-BOT-BC322921  Stephanomeria tenuifolia George W. Gillett 1957-7-26 901 Lassen Butte Lake, Lassen Volcanic National Park 1844 Comment
  CHSC118490  Stipa comata var. comata Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. About 140 yards souteast of central entrance to Sandy Beach cinder pits and 1.9 air miles north-northwest of Spalding marina. UTM 687661 x 4506890. 1563 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
  CAS-BOT-BC519057  Streptopus amplexifolius Alice Eastwood 1912-8-22 1765 Lassen Trail to Sulphur Mine from Morgans, Lassen Butte Region Comment
  UCD149957  Stuckenia filiformis subsp. alpina William Anderson 1963-6-24 s.n. Lassen Hartson Reservoir. Comment
  CHSC110305  Suaeda nigra L. P. Janeway; B. Castro 2012-7-2 10925 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC63602  Subularia aquatica var. americana Vernon H. Oswald; John Ost, Mary Lou Mini 1994-8-6 6447 Lassen Caribou Wilderness along the west loop of the trail from the Hay Meadow to Long Lake. On the margin of a pond. 2065 Comment
  CHSC27669  Swertia albicaulis var. nitida Robert A. Schlising 1978-7-9 3312 Lassen S of Eagle Lake; forested area between Papoose Meadows and Eagle Lake Road. Comment
  CHSC64841  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald 1995-6-26 6932 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 9.9 mi W of Madeline, ca 0.5 mi W of the reservoir at Fleming Sheep Camp and along the stream coming from the same. 1609 Comment
  UCD136510  Symphyotrichum ascendens Verne Grant; Irving Schneider 1947-9-6 8391 Lassen west of Fleming Ranch Headquarters, near Wendel. Comment
  CAS-BOT-BC97606  Symphyotrichum campestre Margaret Williams 1974-7-27 74 -L-67 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  RSA324710  Taeniatherum caput-medusae A. Tiehm, James Young, Raymond Evans 1984-6-7 8597 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  JEPS94121  Tamarix parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9096 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford Comment
  CAS-BOT-BC376848  Taraxacum John Thomas Howell 1934-6-14 12139 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC5066  Taraxacum officinale D. L. Stites 1967-6-24 30 Lassen Collected ca. 3 mi. se ELBS, Upper Murrer Meadow. 1524 Comment
  UC36609  Taraxacum officinale J. Burtt Davy Jun 17 1897-Jun 24 1897 3383 Lassen Honey Lake Valley Comment
  CAS-BOT-BC376899  Taraxacum officinale 1927-6-19 17 Lassen Lassen National Forest. Norval Flat 1747 Comment
  CAS-BOT-BC376900  Taraxacum officinale A. M. Vollmer; L. Beane 1953-7-1 62 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC6192  Taraxia subacaulis P. Balch 1955-6-1 Lassen Eagle Lake. Stephen's Meadows. 1905 Comment
  JEPS94483  Taraxia subacaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8521 Lassen 3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04 1731 Comment
  CHSC112988  Taraxia tanacetifolia Lowell Ahart; John Dittes 2013-7-23 18885 Lassen About 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC4967  Taraxia tanacetifolia R. Carter 1967-6-23 547 Lassen In upper part of Murrer's Meadow. 1584 Comment
  CHSC59758  Taraxia tanacetifolia Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In meadows by creek in Balls Canyon. 1219 Comment
  SBBG20782  Taraxia tanacetifolia A. I. Richardson 1961-5-31 11 Lassen near Seaid Valley Reservoir Comment
  SJSU4286  Taraxia tanacetifolia R. L. Fisher 1958-6-16 Lassen c. 6 mi S of Madeline Comment
  CHSC34921  Tetradymia canescens M. S. Taylor 1981-7-13 4008 Lassen Ramelli Ranch, e side, s of Feather River, ca. 2 mi ese of Beckwourth. 1487 Comment
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Jun 9 2010
  CHSC429  Tetradymia canescens P. Balch 1955-7-23 Lassen Antelope Grade, Eagle Lake. 1615 Comment
  RSA783307  Tetradymia canescens R. R. Halse 2010-8-26 8090 Lassen Along State Hwy 70 at Beckwourth Pass ca. 4.3 miles west of its junction with US Hwy 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  SBBG65937  Tetradymia glabrata E. Rockwell -Jun-1925 295 Lassen Honey Lake Valley 1371 Comment
  UC830638  Tetradymia glabrata A. A. Heller 1938-6-23 15205 Lassen near Mapes (on U.S. Hwy 395) 1310 Comment
  CHSC64762  Tetradymia spinosa Vernon H. Oswald 1995-5-24 6771 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
  UC36632  Tetradymia spinosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3341 Lassen Honey Lake Valley Comment
  CHSC1496  Thalictrum fendleri 1944-7-7 Lassen Bogard. 1722 Comment
  CHSC93248  Thelypodium crispum John Dittes; Scott Chamberlain 2004-6-28 1012 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1445 Comment
  UC10930  Thelypodium crispum M. S. Baker and F. Nutting 1894-7-6 Lassen Dixey Valley Comment
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Oct 10 2006
  POM95733  Thelypodium crispum Marcus E. Jones 1897-6-30 s.n. Lassen Ranch below Eagle Lake. Susanville, 4 miles. 1524 Comment
  UCD55274  Thelypodium flexuosum Ellen Dean 2006-5-15 3084 Lassen East of town of Susanville, along County Road A27 (