Search Results — 2000 specimen records retrieved (1600 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
  RSA759629  Abies concolor Doug Goldman 2004-11-6 2940 Lassen Along the east side of Forest Road 32N08, about 2.6 miles east of the intersection with Route 44. Crater lake Mountain, Lassen National Forest. 1811 Comment
  CHSC68838  Acer glabrum var. torreyi Vernon Oswald; Lowell Ahart 1997-6-24 8607 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
  CHSC4769  Achillea millefolium R. Carter 1967-7-16 619 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 on rd. Comment
  CAS-BOT-BC260404  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near E side of saddle ca 0.8 mile NE of Meadowview Peak 1981 Comment
  CHSC93660  Achnatherum hymenoides Lowell Ahart; John Dittes 2005-6-2 11996 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  UC60714  Achnatherum hymenoides J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  CAS-BOT-BC210662  Achnatherum lemmonii John Thomas Howell 1976-7-20 52004 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UC1024870  Achnatherum lemmonii Leo Whitney 1935-5-26 3156 a Lassen 10 mi e Adin (Ash Creek); Ash Creek Comment
  UC40031  Achnatherum lemmonii M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  UCD18958  Achnatherum lemmonii Jack N. Reppert 1965-7-13 18 Lassen Lassen National Forest, Harvey Valley Allotment-Logan Springs. 1706 Comment
  UCD50593  Achnatherum lemmonii L. Whitney 1933-7-7 s.n. Lassen Halls Flat, Lassen County. 1737 Comment
  CHSC114405  Achnatherum nevadense Don Lepley 2014-6-24 Lassen Lassen National Forest, Eagle Lake Ranger District. Two air miles east of Diamond Mountain summit, around landing at end of Road 28N52A. 2133 Comment
  UCD37479  Achnatherum nevadense Beecher Crampton 1960-6-18 5729 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC216849  Achnatherum occidentale John Thomas Howell; Gordon H. True 1973-7-31 50059 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  UCD51066  Achnatherum occidentale subsp. californicum Beecher Crampton 1960-6-18 5729 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  CAS-BOT-BC218611  Achnatherum occidentale subsp. pubescens John Thomas Howell 1974-7-10 50519 Lassen Janesville, at the cemetery, Sierra Nevada 1295 Comment
  UCD51192  Achnatherum occidentale subsp. pubescens Beecher Crampton 1964-6-25 7071 Lassen 25 miles n.w. Susanville, State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  CAS-BOT-BC218009  Achnatherum thurberianum Louella Bass 1973-5-25 EU 42 Lassen Elysian Valley 1325 Comment
  CHSC29880  Achnatherum thurberianum Robin L. Ondricek 1978-6-8 47 Lassen Ridge E of Lower Dry Lake. 1798 Comment
  CHSC93701  Achnatherum thurberianum Lowell Ahart; John Dittes 2005-6-2 11946 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, about 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  UC1133071  Achnatherum thurberianum A. Simontacchi 1940-6-13 859 Lassen 3/3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD32677  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen Lassen County, 7 miles north of Madeline, along US highway 395, roadside. 1524 Comment
  UCD51441  Achnatherum thurberianum L. Whitney 1935-6-19 3258 Lassen Ashurst Mountain, 13 miles west of upper end of Eagle Lake, Lassen National Forest. 1584 Comment
  CAS-BOT-BC217993  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  UCD51301  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Along US Hwy 395, 15 miles south of Ravendale. 1676 Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  JEPS121257  Acmispon denticulatus Lowell Ahart, John Dittes 2013-7-23 18888 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
  UC1037221  Aconitum columbianum Leo Whitney 1934-7-23 1589 Lassen ca. 7 - 8 mi. s.w. Eagle lake (Bridge Creek Camp near Bridge Creek); Lassen Nat'l Forest, Bridge Creek Camp 1737 Comment
  UC465624  Aconitum columbianum Milo S. Baker 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC412873  Aconogonon davisiae Lassen 1927 G. S. Crew 1927-6-25 31 Lassen Lassen National Forest. Norval Flat 1747 Comment
  CHSC117280  Acroptilon repens Lowell Ahart; John Dittes 2016-7-15 21229 Lassen East side of road, where the fence is near the canal, about 200 yards southwest of where the levee road crosses Big Valley Cana, in Big Valleym about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1264 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
  UCD95438  Adonis aestivalis Gerald Dickinson 1963-7-2 s.n. Lassen Willow Creek Campground, ca. 18 miles southeast of Adin on road to Termo. 1219 Comment
  CHSC112436  Aegilops cylindrica Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18787 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CHSC25524  Agastache parvifolia Gary Laver 1977-8-11 Lassen Northwest side of Crater Mt., Lassen National Forest, Eagle Lake District, Mt. Diablo Meridian. 1719 Comment
  CHSC60832  Agastache parvifolia Vernon H. Oswald; Lowell Ahart 1993-6-28 5619 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
  UC1609441  Agastache parvifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5619 Lassen e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering a drying branch of Pine Creek); ne end of Little Harvey Valley, Pine Creek 1737 Comment
  POM147886  Agastache urticifolia J. B. Feudge 1927-7-20 1754 Lassen Westwood Comment
  JEPS28677  Ageratina occidentalis George W. Gillett 1957-7-26 904 Lassen point of rocks, w of outlet and above trail Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  HSC63943  Ageratina occidentalis Teresa Prendusi 1980-7-16 Lassen Willow Creek 1463 Comment
  UC1609115  Agoseris glauca var. glauca Vernon H. Oswald and Lowell Ahart 1993-6-14 5530 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), upper beach, between road and lake); Eagle Lake 1566 Comment
  CHSC71219  Agoseris glauca var. laciniata Vernon H. Oswald; Lowell Ahart 1998-6-4 9142 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  JEPS100463  Agoseris grandiflora Dean W. Taylor 2001-6-28 17818 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  RSA0009531  Agoseris grandiflora Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UCD128593  Agoseris grandiflora G. Schoolcraft 2000-6-19 2904 Lassen Susanville; west of Cold Spring Valley. 1706 Comment
  CHSC68840  Agoseris heterophylla Vernon Oswald; Lowell Ahart 1997-6-24 8601 Lassen South of Susanville on the north side of Diamond Mtn at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (20N10). 1655 Comment
  OBI77284  Agoseris heterophylla Anthony Baniaga 2011-6-17 354 Lassen Lassen NF. N side of Hog Flat Reservoir. Pegleg Mtn quad T30N R10E sec 19 NE of NE 1678 Comment
  JEPS107468  Agoseris monticola Lowell Ahart, John Dittes 2005-6-1 11851 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
  CHSC66418  Agropyron desertorum Vernon H. Oswald; Lowell Ahart 1996-6-17 7800 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Ca.0.1 mi E of Devils Corral Trialhead. 1420 Comment
  SEINET10509717  Agropyron desertorum Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 859 Lassen Collected at jct of hwy 70 & 395 at arco station. Comment
  SEINET13680062  Agropyron desertorum J. R. Reeder, C. G. Reeder 1981-5-20 7350 Lassen 3.5 km NNW of Janesville. above Long Valley 1250 Comment
  UCD32657  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UC773966  Agrostis exarata L. R. Short 1936-8-21 S- 499 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1798 Comment
  UCD39949  Agrostis exarata A. H. Murphy 1953-6-24 HG 48 Lassen Lassen County?: Hog Lake, James pasture. 762 Comment
  CAS-BOT-BC139294  Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen Lassen Volcanic National Park. Snag Lake. Margin of gravel bars 100 yards above lake near south shore. 1850 Comment
  CAS-BOT-BC139298  Agrostis idahoensis John Thomas Howell; Gordon H. True 1973-8-1 50232 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  UC1567418  Agrostis pallens G. Schoolcraft 1989-7-18 1978 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UC1594652  Agrostis pallens Vernon H. Oswald and Lowell Ahart 1992-7-16 5107 Lassen s side of Hwy 44 1.2 mi se County Road A21 (between Old Station and Susanville); Long Lake 1745 Comment
  UCD53173  Agrostis pallens L. Whitney 1933-8-7 2194 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  UCD53272  Agrostis scabra L. Whitney 1933-8-4 2228 Lassen Sheepshead, 10 miles northwest of north end of Eagle Lake, Lassen National Forest. 1889 Comment
  UCD53279  Agrostis scabra August L. Hormay 1932-7-20 s.n. Lassen Lassen National Forest. Bogard Ranger Station. Comment
  JEPS28055  Agrostis thurberiana George W. Gillett 1957-7-28 925 -a Lassen upper end Butte Lake (trail to Widow Lake above junction with Snag Lake trail, 100 yds above trail junction); Lassen Volcanic National Park 1859 Comment
  SEINET7594432 Image available Agrostis variabilis George W. Gillett 1957-1 927 Lassen Lassen Volcanic National Park, Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake. Dry wash 100 yards above trail junction. 1859 Comment
  HSC26010  Aliciella leptomeria D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19290 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  SEINET14163171  Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  CAS-BOT-BC267065  Alisma gramineum Malcom A. Nobs; S. Galen Smith 1949-7-22 1074 Lassen Marshes along Willow Creek, Willow Creek Valley, 10 miles N of Susanville Comment
  UC978579  Alisma gramineum Verne Grant and Irving Schneider 1947-9-6 8382 Lassen creek midway between Eagle Lake and Susanville Comment
  UC1536805  Alisma plantago-aquatica Gordon H. True Jr. 1939-7-6 1016 Lassen George Bailey Ranch Honey Lake Valley Comment
  RSA0039525  Alisma triviale Lowell A. 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
  CHSC7661  Allium acuminatum Beverley J. Wise 1969-5-18 138 Lassen 17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  UC1483842  Allium acuminatum G. Schoolcraft 1980-6-5 250 Lassen ne side of Snowstorm Mountain Snowstorm Mountain 1584 Comment
  CAS-BOT-BC459569  Allium acuminatum G. Schoolcraft 1986-5-19 1574 Lassen North slope of Bald Mtn., Susanville 1280 Comment
  UC119964  Allium amplectens T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  UC3061  Allium amplectens M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  UC3055  Allium anceps Mrs. C. C. Bruce June, 1898 Lassen Madeline Plains Comment
  CAS-BOT-BC135913  Allium atrorubens var. atrorubens Arnold Tiehm; Margaret Williams; Jan Nachlinger 1988-6-2 11702 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, west of the highway. 1386 Comment
  CHSC27592  Allium campanulatum Jennifer Estep 1978-7-5 22 Lassen E side of Mahogany Lake, S of Eagle L. 2060 Comment
  POM110223  Allium campanulatum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CAS-BOT-BC464482  Allium campanulatum A. H. Kramer 1937-1-1 s.n. Lassen Lassen National Park, near Prospect Pk. Comment
  HSC84127  Allium lemmonii Dale McNeal 1983-6-5 2840 Lassen Beside Eagle Lake Rd., 0.5 mi. N of Hwy. 36 Comment
  UCD138558  Allium lemmonii A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3366 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  POM260464  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UC2042973  Allium lemmonii Barbara Ertter 1990-5-13 8966 Lassen McCoy Road N of Westwood, 0.3 mi S of Highway 44 on E side of McCoy Flat. Comment
  CHSC7662  Allium parvum Beverley J. Wise 1969-4-10 139 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  SEINET3878898  Allium platycaule D. W. McNeal 1980-6-1 2339 Lassen In open areas on the slope below Hwy #139, 19.2 mi S of the Modoc Co. line.; 0 Comment
  SEINET10589833  Alopecurus Robert F. Thorne, Larry E. DeBuhr 1975-8-22 Thorne 46987 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  JEPS87183  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1992-7-16 5108 Lassen s. side Hwy. 44 between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir) 1691 Comment
  UC60734  Alopecurus aequalis M. S. Baker and F. Nutting 1894-7-1 Lassen n. side Dixey Mts. Comment
  UCD55871  Alopecurus aequalis Beecher Crampton 1964-6-27 7097 Lassen ca. 8 miles southeast Ravendale B.L.M. Spanish Springs- Shinn Mountains Resource Conservation area. 1981 Comment
  CAS-BOT-BC138162  Alopecurus aequalis var. aequalis John Thomas Howell 1975-7-23 51388 Lassen Sierra Nevada. Susanville. 1295 Comment
  UC1136824  Alopecurus geniculatus George A. Fischer and Irwin H. Johnson 1933-7-11 F 190 Lassen Dry Lake Lassen Nat'l Forest, Grass Valley, Dry Lake 1694 Comment
  UC507008  Alopecurus geniculatus George A. Fischer and Irwin H. Johnson 1933-7-11 F 190 Lassen Dry Lake Lassen Forest, Grass Valley, Dry Lake 1694 Comment
  CHSC60728  Alyssum desertorum Vernon H. Oswald; Lowell Ahart 1993-6-14 5534 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). Along the edge of the road. 1566 Comment
  CHSC107996  Alyssum minus subsp. micranthum Lowell Ahart; John Dittes 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC27717  Amaranthus blitoides Robert A. Schlising 1978-7-27 3319 Lassen E of Eagle Lake and NE of Eagle L. Field Station. 1578 Comment
  UCD97198  Amaranthus blitoides John Thomas Howell 8-9 Jul 1974 50501 Lassen Sierra Nevada. Susanville. 1295 Comment
  RSA518417  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen 3 mi. E of Susanville, along State Road 36. 1341 Comment
  RSA719708  Ambrosia acanthicarpa Michael A. Vincent, K. Levings 2006-7-29 12920 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  UCR67435  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UCD112861  Amelanchier alnifolia Beecher Crampton 1954-5-11 1881 Lassen Beckwourth Pass, Plumas. 1588 Comment
  CAS-BOT-BC222255  Amsinckia John Thomas Howell 1934-6-10 11870 Lassen Honey Lake Valley, 24 miles s. of Susanville Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  POM71504  Amsinckia intermedia Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA0089911  Amsinckia menziesii L. Ahart 2005-6-1 11899 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
  SEINET10455819  Amsinckia menziesii Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2582 Lassen 6 mi S of Adin; along CA Hwy 139 right-of-way; in basalt-clay, grassy road bank; Artemesia-Juniper assoc. 1372 Comment
  CDA40473  Amsinckia menziesii var. menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  UC24607  Amsinckia menziesii var. menziesii Milo S. Baker 1893-7-14 Lassen Money Lake Valley Comment
  UC198379  Amsinckia tessellata var. tessellata J. G. Lemmon Lassen Sierra and Long Valleys Comment
  UC585123  Amsinckia tessellata var. tessellata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1747 Lassen e facing slope of gully on mountain above Red Rock 1432 Comment
  SEINET6734941 Image available Anaphalis margaritacea C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  UCD159579  Anaphalis margaritacea D. S. Park 2011-8-24 316 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  POM36284  Ancistrocarphus filagineus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CAS-BOT-BC64112  Anisocoma acaulis G. Schoolcraft 1997-5-7 2586 Lassen Port Sage Mtns. n. of Indian Spring 1584 Comment
  HSC42425  Antennaria argentea Barbara Kelly 1977-8-8 550 Lassen Ash Creek Campground Comment
  OBI77058  Antennaria dimorpha Anthony Baniaga 2011-6-5 305 Lassen Lassen NF. Pine Crk Valley N side. Pine Crk Valley quad. T32N R8E sec 35 SW of SW 1725 Comment
  HSC69048  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Schaffer Mtn. about 1/2 mile west of Hwy. 395 1463 Comment
  SEINET10854084  Antennaria dimorpha Billy Joe Cox 1971-6-2 Cox 2997 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  UC1266740  Antennaria flagellaris Gary Schoolcraft 1981-5-27 410 Lassen (on rocky gravelly site near Yellow Pine Forest) Hayden Hills 1737 Comment
  CAS-BOT-BC69138  Antennaria geyeri Milo S. Baker 1894-7-12 s.n. Lassen Pine Creek Comment
  CHSC65087  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1995-7-24 7130 Lassen High Cascade Range. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  RSA700232  Antennaria geyeri L. P. Janeway 2001-4-20 7206 Lassen HIGH CASCADE RANGE: 0.6 km east of road 111 and 1.3 km south of Road 35N60, about 11 km west of ittle Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC773955  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Burgess Spring Experiement Range 1828 Comment
  SJSU7638  Antennaria geyeri J. W. Tilden 1960-6-27 1510 Lassen foot of Moonlight Road in outskirts Westwood 1524 Comment
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  JEPS96124  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1996-6-24 7857 Lassen ca. 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow ca. 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  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
  RSA637571  Antennaria luzuloides Michael A. Vincent 1999-6-9 8577 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
  CHSC89757  Antennaria luzuloides subsp. aberrans L. P. Janeway 2004-6-26 8168 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC68730  Antennaria luzuloides subsp. luzuloides Vernon H. Oswald; Lowell Ahart 1997-5-27 8506 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  CAS-BOT-BC77283  Antennaria microphylla Clare B. Hardham 1969-8-28 17453 B Lassen West of Janesville Comment
  CHSC60714  Antennaria rosea subsp. rosea Vernon H. Oswald; Lowell Ahart 1993-6-14 5506 Lassen Lassen A21 (32N02), 2.1 mi E of Lassen 105 (32N28Y), on the SE side of Pine Creek Valley, ca. 8 mi (air) W of Eagle Lake. . 1728 Comment
  CDA42997  Apera interrupta L. Ahart, John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  UC1523746  Apera interrupta Gary Schoolcraft 1981-6-8 618 Lassen s of Beaver Creek 1249 Comment
  CHSC6221  Apocynum androsaemifolium W. Vinyard 1946-6-17 Lassen Eagle Lake, summit of Mt. Fredonyer. 2349 Comment
  JEPS49800  Apocynum androsaemifolium Brown and Wieslander 1922-7-17 3 Lassen Eagle Lake, Martin Springs Comment
  UC1537515  Apocynum cannabinum Gordon H. True Jr. 1937-7-10 782 Lassen Bull Flat, Refuge 1Q 1524 Comment
  CAS-BOT-BC392211  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt. Susanville, Perkin's Ranch 2133 Comment
  UC773880  Aquilegia formosa L. R. Short 1936-6-26 S- 407 Lassen Lassen National Forest, Burgess Spr. Exp. Range 1837 Comment
  UCR18735  Arabis holboellii Frank C. Vasek 1975-7-11 750711- 13 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  JEPS28468  Arabis rectissima var. rectissima George W. Gillett 1957-9-4 1123 Lassen about 1/8 mi below Widow Lake (Widow Lake Trail); Lassen Volcanic National Park 2011 Comment
  NY119616  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81181 Lassen 5.3 miles S of junction of California Hwy. 139 and County Road 201 Comment
  NY119619  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81179 Lassen About three miles north of Eagle Lake Comment
  CAS-BOT-BC409988  Arceuthobium campylopodum Louella Bass 1973-5-29 EU 48 Lassen Elysian Valley 1325 Comment
  SEINET2471218  Arceuthobium campylopodum R. L. Mathiasen 2009-8-20 2009 -51 Lassen 2 km NW. of jct. of State Rte. 44 and State Rte. 36 on Rte. 44 1563 Comment
  UC1584019  Arceuthobium campylopodum G. Schoolcraft 1990-8-1 2120 Lassen betw Cleghorn and Heath Reservoirs 1828 Comment
  CDA6788  Arctium minus T. C. Fuller 1959-7-7 4725 Lassen Highway 395 at Secret Creek Bridge, 3.3 miles north of road to Karlo. 0 Comment
  CAS-BOT-BC45907  Arctostaphylos nevadensis Bill Wilson 1967-7-14 205 Lassen Silver Lake, 20 mi. NW of Susanville 1889 Comment
  CAS-BOT-BC45911  Arctostaphylos nevadensis Jeanne Janish; Carl Janish 1938-9-4 s.n Lassen Above upper Twin Lake, Lassen National Park 2042 Comment
  UC21853  Arctostaphylos nevadensis M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  CAS-BOT-BC42166  Arctostaphylos patula subsp. patula Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16319 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  CHSC25747  Arctostaphylos patula subsp. patula John Steiner 1977-6-14 73 Lassen Lassen Volcanic National Park. 250 m NE Manzanita Lake and 250 m E Lassen Park boundry. 1768 Comment
  RSA700049  Arenaria congesta L. P. Janeway 2001-6-20 7191 Lassen High Cascade Range. South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. High Cascade Range., South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  JEPS117259  Arenaria congesta var. congesta Lowell Ahart, John Dittes 2010-7-31 17011 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  UCR244034  Arenaria congesta var. suffrutescens Jim Andre, G. L. Clifton 1993-6-3 19704 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
  CAS-BOT-BC401792  Argemone munita subsp. rotundata Elmer I. Applegate 1921-9-4 3545 Lassen Hills north of Susanville Comment
  RSA0011559  Arnica R. F. Thorne, Larry E. DeBuhr 1975-8-22 46993 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC84875  Arnica chamissonis Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 357 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
  UC29631  Arnica chamissonis M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  JEPS118465  Arnica chamissonis subsp. foliosa Lowell Ahart, John Dittes 2011-6-21 17534 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  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
  JEPS109911  Arnica fulgens Dean W. Taylor 2007-6-14 20128 Lassen Upper Gooch Valley, Forest Road 35N05 (County Road 22) 0.3 miles north of junction with Forest Road 34N45 1889 Comment
  CAS-BOT-BC82649  Arnica latifolia John Thomas Howell; Gordon H. True 1973-8-1 50236 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  CHSC29954  Arnica nevadensis Robin L. Ondricek 1978-5-25 28 Lassen .4 mi N of Lake Forest Development on Co. Rd. A1. 1828 Comment
  CDA10134  Artemisia abrotanum E. E. Fix 1964-11-4 Lassen From Soil Conservation Service Nevada. 0 Comment
  CHSC118795  Artemisia arbuscula subsp. arbuscula L. P. Janeway 2015-8-9 11823 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01- the road to Patterson Camprgound); 0.7 air-km west of Long Valley, 5.3 air-km northeast of Blue Lake. 2179 Comment
  SEINET2164570  Artemisia arbuscula subsp. arbuscula Unknown 1985-6-23 8603 Lassen 41 miles north of Susanville on hwy 395 1430 Comment
  UC747143  Artemisia arbuscula subsp. arbuscula G. Thomas Robbins 1945-10-18 2156 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  SBBG95820  Artemisia douglasiana G. K. Helmkamp 1990-9-23 E- 15 Lassen 20 mi N of Litchfield, along US Hwy 395 1432 Comment
  CAS-BOT-BC90330  Artemisia douglasiana Clare B. Hardham 1971-8-22 18374 Lassen North slopes, Diamond Mountain 2133 Comment
  UC1776685  Artemisia ludoviciana subsp. ludoviciana G. Schoolcraft 1999-8-11 2878 Lassen East edge of Madeline Plains E of Ravendale, CA 1627 Comment
  UCD129340  Artemisia nova W. A. Williams 1951-8-6 s.n. Lassen Black's Mountain Range Experiement Station, (old Hell's Flat Ranger Station site). 25 miles south of Pittville. 1584 Comment
  UCD149841  Artemisia spinescens William Anderson 1965-4-20 s.n. Lassen Wendel. Comment
  UCD55270  Artemisia spinescens Ellen Dean 2006-5-15 3080 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  CHSC42148  Artemisia tridentata C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi SE of Madeline and 9 mi NE of Termo. 2194 Comment
  CHSC5197  Artemisia tridentata P. Balch 1955-7-10 Lassen Fields adjoining Stafford's Ranch, Eagle Lake. 1584 Comment
  RSA647532  Artemisia tridentata subsp. tridentata Marion P. Harthill 1972-6-16 793 Lassen Doyle Comment
  UC773962  Artemisia tridentata subsp. vaseyana L. R. Short 1936-9-30 S- 505 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1752 Comment
  SEINET3397741  Artemisia tridentata subsp. vaseyana Unknown 1994-1 s.n. Lassen Sage Hen Summit - US 395 Comment
  CHSC60269  Asclepias fascicularis P. V. Caldwell 1972-6-24 298 Lassen Rocky beach off road to beach near the tunnel at Eagle Lake B. S. Comment
  RSA401104  Asclepias speciosa George Willet 1935-6-27 s.n. Lassen Susanville Comment
  RSA712643  Aster campestris L. P. Janeway 2005-7-31 8514 Lassen Northern High Sierra Nevada. Diamond Mountains; Head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  RSA504836  Aster modestus Bruce Bartholomew, B. Anderson 1988-7-22 4499 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
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Jan 31 2013
  CDA26597  Astragalus andersonii L. Ahart, J. Dittes 2005-6-1 11917 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. Comment
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  NY791368  Astragalus andersonii M. J. Williams 1978-5-14 7848- 2 Lassen 2.8 miles south of northern road into Red Rock (off Highway 395) 1371.6 Comment
  SEINET10450638  Astragalus andersonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17802 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine alon ghigh ridge and in sandy wash. 1402 Comment
  NY5381  Astragalus anxius R. J. Meinke 1991-7-16 6108 Lassen Ash Valley, ca 25 km W of Madeline, along Ash Valley Road, on boundary T38N, R11E, S32 and T37N, R11E, S5. 1550 Comment
  UC1594460  Astragalus anxius Meinke and Lantz 1991-7-16 6108 Lassen ca 25 km w Madeline (along Ash Valley Rd.); Ash Valley 1550 Comment
  SEINET2059942 Image available Astragalus argophyllus var. argophyllus Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10347 Lassen 1 mi W of the State line on the dirt road from Hwy 395 to Smoke Creek, S side of Rush Creek 1341 Comment
  NY797391  Astragalus canadensis var. brevidens G. Schoolcraft 1989-6-19 1920 Lassen Along north shore of Eagle Lake 1554.5 Comment
  NY797392  Astragalus canadensis var. brevidens R. R. Halse 1991-7-28 4247 Lassen Along State Highway 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville 1558 Comment
  UC1553369  Astragalus canadensis var. brevidens Gary Schoolcraft 1988-7-7 1821 Lassen Madeline Plains n of Observation Peak and Horne Ranch Rd.; Madeline Plains n of Observation Peak 1645 Comment
  CDA26649  Astragalus curvicarpus T. C. Fuller 1965-6-3 13607 Lassen 1.3 miles west-northwest of Janesville. 0 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
  CHSC7675  Astragalus filipes Beverley J. Wise 1969-5-3 52 Lassen 4.8 mi. east of Hwy 395 on Las. Co. Rd 338 (Smoke Creek road). 1615 Comment
  POM26155  Astragalus gibbsii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkins Ranch. 1463 Comment
  SEINET948354  Astragalus gibbsii Philip A. Munz 1947-1 11889 Lassen Milford 1265 Comment
  CAS-BOT-BC186863  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1943-6-13 5692 Lassen South of Milford 1432 Comment
  CAS-BOT-BC186867  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1942-5-22 4541 Lassen Loyalton 1524 Comment
  NY674272  Astragalus gibbsii J. T. Howell 1974-7-10 50515 Lassen Sagebrush flat at the cemetery, Janesville 1295 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-BC186910  Astragalus inversus M. S. Baker 1898-8-1 529 Lassen Big Valley, near Johnson's Comment
  CAS-BOT-BC186914  Astragalus inversus H. D. Ripley; R. C. Barneby 1943-6-14 5740 Lassen Mesa W. of Susanville 1371 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  UC1142997  Astragalus inversus August L. Hormay 1934-7-2 Lassen Black's Mtn Headquarters , Black's Mtn Headquarters (Lassen National Forest) 1706 Comment
  POM23663  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET5325323  Astragalus iodanthus var. diaphanoides M. J. Williams, Gary Schoolcraft; Arnold Tiehm 1986-5-12 86- 23 -2 Lassen Smoke Creek Rd, E of Hwy 395, 1 mi W of Nevada-Calif. Boundary. 1341 Comment
  CAS-BOT-BC229051  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  JEPS123847  Astragalus lemmonii Lowell Ahart, John Dittes 2015-7-14 20336 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC13384  Astragalus lemmonii M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CHSC12428  Astragalus lentiginosus Robert W. Severin 1969-6-25 54 Lassen 2/3 mi. ne E.L.B.S. on edge of road. 1577 Comment
  SEINET10486607  Astragalus lentiginosus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3112 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
  NY675509  Astragalus lentiginosus var. chartaceus H. D. D. Ripley 1943-6-14 5744 Lassen Hidden Valley east of Susanville 1311 Comment
  UC1537105  Astragalus lentiginosus var. floribundus Gordon H. True Jr. 1938-7-8 903 Lassen n Hot Spring Mountain (Mud Flat); n of Hot Spring Mountains, Mud Flat 1371 Comment
  CHSC828  Astragalus lentiginosus var. lentiginosus 1944-6-26 Lassen Eagle Lake. 1584 Comment
  JEPS114628  Astragalus lentiginosus var. lentiginosus Lowell Ahart, John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber 1268 Comment
  POM204048  Astragalus lentiginosus var. lentiginosus J. T. Howell 1934-7-6 12437 Lassen Harvey Valley Comment
  RSA0006801  Astragalus lentiginosus var. lentiginosus H. D. Ripley, R. C. Barneby 1943-6-14 5724 Lassen Mountains W of Susanville 1448 Comment
  SBBG128879  Astragalus lentiginosus var. salinus L. Ahart 2011-6-20 17510 Lassen near edge of Ash Valley Rd, 3120 feet S of Ash Crk Cmpgrd, ca. 6.5 mi (air) SE of Adin 1511 Comment
  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
  SEINET10486634  Astragalus malacus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2599 Lassen Hallalujah jct intersection of us hwy 395 & calif hwy 70; in open waste area Adjacent to artemisia tridentata community. 1433 Comment
  CAS-BOT-BC192846  Astragalus pulsiferae Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  CHSC91331  Astragalus pulsiferae var. pulsiferae Lowell Ahart; John Dittes 2005-6-1 11871 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
  NY694125  Astragalus pulsiferae var. pulsiferae H. D. D. Ripley 1943-6-7 5499 Lassen East side of Beckworth Pass, south Lassen Co. 1494 Comment
  SD71380  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen The Sierra Nevada, Sagebrush flat, east side of Beckwourth Pass 1493 Comment
  SEINET5324389  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 L-16 Lassen 2 mile W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  CHSC25301  Astragalus purshii Pauleen Broyles 1977-5-30 144 Lassen Spencer's Basin ca 8 km n of Herlong. 1770 Comment
  SEINET10841190  Astragalus purshii Mary Susan Taylor 1974-5-4 Taylor 224 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
  RSA0007957  Astragalus purshii var. lectulus H. D. Ripley, R. C. Barneby 1944-5-30 5983 Lassen 2 miles N of Madeline. 1707 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
  JEPS127726  Astragalus purshii var. purshii H. Chappel, K. Moran & K. Strassman 2002-6-27 ALT- 013 Lassen Pit River Valley/Beaver Creek BLM land Comment
  CAS-BOT-BC192973  Astragalus purshii var. tinctus Doris Kildale Gillespie 1930-5-13 9376 Lassen Between Susanville and Janesville Comment
  POM45166  Astragalus purshii var. tinctus T. S. Brandegee 1892-6-23 s.n. Lassen Honey Lake Comment
  SEINET10490027  Astragalus purshii var. tinctus Paul Gallian, David B. Dunn 1971-6-2 Gallian 497 Lassen Approx 22 mi s of adin on calif hwy 139; in basalt; assoc juniper artemisia. 1646 Comment
  HSC63892  Astragalus whitneyi Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak. 2378 Comment
  SEINET12165119  Astragalus whitneyi N. H. Holmgren, Holmgren, P. K. 1980-1 9514 Lassen Observation Peak, S side of Mt. 18km airline dist. E of Ravendale. T34N R16E S33 Comment
  UCD105490  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon. Comment
  SEINET12162056  Astragalus whitneyi var. confusus J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4136 Lassen ca 3mi S of Adin on hwy.139 1372 Comment
  CAS-BOT-BC200875  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 7 miles below Eagle Lake 1524 Comment
  CAS-BOT-BC198723  Astragalus whitneyi var. whitneyi Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km airline distance east of Ravendale 2194 Comment
  CHSC29871  Astragalus whitneyi var. whitneyi Robin L. Ondricek 1978-7-22 106 Lassen One mi s of Colley Point Overlook on Hwy 139. 1670 Comment
  UC1730231  Astragalus whitneyi var. whitneyi L. P. Janeway 1998-7-8 5722 Lassen ridgetop saddle 2.4 mi NW of Red Rock (along road 213, 0.1 mi E of jct of Roads 28N08, 29N10, 213, and 28N55); ; Ridgetop saddle about 2.4 mi northwest of Red Rock; along Road 213, 0.1 mi east of the junction of Roads 28N08, 29N10, 213, and 28N55. 1988 Comment
  CAS-BOT-BC17439  Athysanus pusillus George Haley 1927-4-15 s.n. Lassen Constantia. Comment
  UC769845  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  CHSC109990  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 B Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  CDA23253  Atriplex confertifolia Robin Breckenridge 2007-5-1 PDR# 1349824 B Lassen Wendel. 0 Comment
  UC1537376  Atriplex confertifolia Gordon H. True Jr. 1936-6-24 520 Lassen n shore Honey Lake (Honey Lake Valley); n shore Honey Lake, Honey Lake Valley 1219 Comment
  UC7062  Atriplex confertifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3274 Lassen Honey Lake Valley 1219 Comment
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  NY541161  Atriplex covillei H. M. Hall 11683 Lassen 26 miles north of Reno (on road to Doyle) Comment
  JEPS94838  Atriplex gmelinii var. gmelinii Vernon H. Oswald and Lowell Ahart 1998-9-8 9581 Lassen 2.2 mi n of Bieber (on County Road 91 (Bieber-Lookout Road)); Ash Creek and Big Swamp, County Road 91 1258 Comment
  UCD50220  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  CHSC76273  Atriplex rosea Lowell Ahart; Vernon H. Oswald 1999-9-13 8203 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
  SEINET13710039  Atriplex triangularis Lowell William Ahart, Lowell William Ahart 1999-1 8209 Lassen Honey Lake Wildlife Area, 5.5 Mi SE Standish Comment
  CAS-BOT-BC106485  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen Warner Mountains, Modoc National Forest - Five miles beyond Blue Lake on road to Likely 1767 Comment
  CAS-BOT-BC106489  Balsamorhiza hookeri David D. Keck; J. Clausen 1935-6-24 3747 Lassen 2 mi. S. of Ravendale, in light sandy clay soil with some rock. 1463 Comment
  UC336215  Balsamorhiza hookeri unknown Lassen near Susanville Comment
  HSC100313  Balsamorhiza hookeri var. hirsuta Chris Boever, Ed Lutz and Wendi Lutz 2010-7-7 370102 Lassen On Co. Rd. 1, S from Cedarville, take gravel rd. 15 mi. to Tuledad Canyon Road. 1823 Comment
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May 1 2020
  SEINET2047669 Image available Balsamorhiza hookeri var. hirsuta N. H. Holmgren, P. K. Holmgren 1978-6-12 8935 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance East-Southeast of Ravendale. T33N, R16E, S5. 1768 Comment
  SEINET7239770 Image available Balsamorhiza hookeri var. hirsuta G. Schoolcraft 1998-7-8 2750 Lassen South of Round Corral Reservoir 1890 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
  CHSC5200  Balsamorhiza sagittata 1944-7-9 Lassen Dow Butte. 2042 Comment
  UC1119024  Balsamorhiza sagittata C. W. Hanks 1934-8-18 56 Lassen n part of Upper Long Valley (Sierraville); Sierraville 1463 Comment
  CAS-BOT-BC16437  Barbarea orthoceras George Wilson Gillett 1957-7-21 868 Lassen Lassen Volcanic National Park. Juniper Lake - Cameron Meadow trail. 300 yards north of trail summit. 2118 Comment
  HSC26602  Barbarea orthoceras D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19166 Lassen 3 mi. N of Westwood Comment
  SEINET10970556  Barbarea orthoceras Katherine L. Morris 1973-5-25 Morris 244 Lassen Collected 13.7 mi nw of the jct of hwy 36 and 44 on hwy 44, in an area of yellow pine, fir, and ribes. Comment
  NY529209  Bassia hyssopifolia V. E. Grant 1947-9-6 8390 Lassen Irrigation ditch west of Fleming Ranch Headquarters, near Wendel Comment
  JEPS124725 Image available Beckmannia eruciformis Virginia Hardham 1965-7-13 134 Lassen 1.4 mi. past junction As and 299 going west. Comment
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  UC1100216  Beckmannia syzigachne Herbert L. Mason 1947-7-9 13299 Lassen 5 mi e Bieber Comment
  UC188777  Beckmannia syzigachne Milo S. Baker Lassen Dixey Valley Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  CHSC66844  Berula erecta Vernon H. Oswald 1996-9-21 8285 Lassen Modoc Plateau. Ca. 3 mi W of Hwy. 139 on the road to Eagle Lake Biological Station, ca. 10 mi (air) N of Susanville. 1508 Comment
  CHSC65292  Bidens cernua var. cernua Vernon H. Oswald 1995-8-21 7205 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. 1859 Comment
  CHSC34602  Bistorta bistortoides N. E. Heiken 1978-7-16 72 Lassen Colman L., several mi S of Eagle L. 1962 Comment
  CAS-BOT-BC128033  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC128037  Blepharipappus scaber Doris Kildale Gillespie 1930-5-12 9340 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC128041  Blepharipappus scaber Farris Farris 1935-5-20 s.n. Lassen Three miles southwest of Susanville 1341 Comment
  JEPS126561  Blepharipappus scaber Lowell Ahart, John Dittes 2016-6-7 20977 Lassen About 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  POM223583  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3733 Lassen 2 miles south of Ravendale. 1463 Comment
  SEINET11261379  Blepharipappus scaber Stanley L. Welsh, N. Duane Atwood 2001-6-14 28151 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1540 Comment
  SJSU4600  Blepharipappus scaber J. W. Tilden 1958-6-27 1287 Lassen Madeline Comment
  UC1136967  Blepharipappus scaber L. R. Short 1936-6-10 S- 415 Lassen Burgess Spr. Exp. Range 1798 Comment
  UC577280  Blepharipappus scaber David D. Keck and J. Clausen 1935-6-24 3733 Lassen 2 mi s of Ravendale 1463 Comment
  UC762497  Blepharipappus scaber R. F. Hoover 1940-9-28 4633 Lassen Susanville Comment
  UC87371  Blepharipappus scaber T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CDA10533  Blepharipappus scaber T. C. Fuller 1963-6-1 10620 Lassen Road to Susanville, 2.0 miles south of Pittville. 0 Comment
  SEINET10846329  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2600 Lassen Hallelujah Jct. intersection of U.S. Hwy. 395 & CA Hwy. 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  SEINET10912069  Blepharipappus scaber David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17767 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  CAS-BOT-BC14089  Boechera pauciflora A. Simontacchi 1940-6-6 822 Lassen 10.2 miles SE of Nigger Cabin. 1737 Comment
  CHSC60731  Boechera pinetorum Vernon H. Oswald; Lowell Ahart 1993-6-3 5488 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville. ON the E side of the road. 1688 Comment
  JEPS114362  Boechera puberula Lowell Ahart, John Dittes 2008-6-19 14883 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS95056  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1997-5-27 8495 Lassen North of Susanville on Forest Route 38N04 (between Highway 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Highway 139. 1546 Comment
  UC1143032  Boechera retrofracta L. R. Short 1936-6-1 S- 354 Lassen Burgess Spring Experimental Range Lassen National Forest 1859 Comment
  CHSC36477  Boechera sparsiflora Margaret E. Halloran 1982-6-6 12 Lassen Pine Creek just below fish trap where Pine Crek empties into Eagle Lake. Comment
  CHSC40528  Boechera sparsiflora J. D. Jokerst 1983-5-30 1797 Lassen West of Ash Valley along the SW side of the road to Knox Mt ca 1 mile north of its junction with the road that connects Aden and Madeline. Comment
  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
  HSC16160  Brasenia schreberi Fred J. Kindel 1955-7-14 Lassen Mt. Meadows Reservoir Comment
  UC3344  Brodiaea coronaria subsp. coronaria M. S. Baker and F. Nutting 1894-7-2 Lassen Dixie Mts. Comment
  SEINET201569  Brodiaea coronaria subsp. coronaria Arthur Cronquist 1959-6-18 8485 Lassen 5 miles south of Adin 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
  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
  CHSC80306  Bromus briziformis Jeanne Boze 1981-6-11 101 Lassen About 4 m from road, back from Horse Lake Road, 5.5 mi from Hwy 139. 1676 Comment
  UCR119112  Bromus carinatus Beecher Crampton 1954-7-5 2055 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  UC1136818  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1820 Comment
  UC53631  Bromus carinatus var. carinatus M. S. Baker and Frank Nutting 1894-7-5 Lassen s of Dixie Valley Comment
  CAS-BOT-BC155941  Bromus commutatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49519 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  JEPS95805  Bromus commutatus Vernon H. Oswald and L. Ahart 1999-6-9 9750 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  UCD58468  Bromus commutatus Beecher Crampton 1954-7-5 2067 Lassen Along Hwy. 36. 5 miles west of Susanville. Comment
  UC1037137  Bromus diandrus Leo Whitney 1935-6-28 3371 Lassen Bieber Comment
  UCD59488  Bromus diandrus L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
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Jun 24 2009
  UCR119122  Bromus hordeaceus Beecher Crampton 1954-7-5 2067 Lassen Modoc Plateau, 5 miles west of Susanville. 1448 Comment
  RSA126867  Bromus marginatus G. A. Fischer, I. H. Johnson 1933-7-12 F 231 Lassen Patterson Flat. Lassen Forest. Comment
  CAS-BOT-BC162178  Bromus orcuttianus John Thomas Howell 1934-7-10 12554 Lassen Black's Mountain. Comment
  CAS-BOT-BC162181  Bromus orcuttianus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49472 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1024701  Bromus racemosus L. Whitney 1934-7-18 2143 Lassen Lassen National Forest 1371 Comment
  UC1131324  Bromus suksdorfii A. Simontacchi 1940-6-24 891 Lassen 6.4 mi sw of Jacks Lake (Lassen National Forest); Lassen National Forest 1950 Comment
  RSA152589  Bromus tectorum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16341 Lassen 13.5 mi. E. of Susanville Comment
  UC1131328  Bromus tectorum A. Simontacchi 1940-5-28 783 Lassen 3.2 mi wsw of Patterson Mountain (Lassen National Forest); Lassen National Forest 1767 Comment
  UC1137124  Bromus tectorum August L. Hormay 1929-5-20 Lassen Lassen National Forest, Hat Creek Hat Creek; Lassen National Forest, Hat Creek Comment
  SEINET4564906  Bromus tectorum F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CAS-BOT-BC185530  Bromus vulgaris John Thomas Howell; Gordon H. True 1973-7-31 50056 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  UCD57776  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Lassen National Forest. Westwood Junction. 1737 Comment
  CHSC68744  Callitriche hermaphroditica Vernon H. Oswald; Lowell Ahart 1997-5-27 8514 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy. 139. 1682 Comment
  UCD169625  Callitriche palustris R. F. Thorne; Larry E. DeBuhr 1975-8-22 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1615 Comment
  UCD149989  Callitriche palustris William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  CHSC66239  Callitriche verna Vernon H. Oswald; Lowell Ahart 1996-6-24 7870 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In or along Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS88592  Callitriche verna Vernon H. Oswald and Lowell Ahart 1996-6-24 7870 Lassen 2.5 mi s Eagle Lake (and 0.5 mi e of Eagle Lake Rd (A1), along Papoose Creek where it leaves the n end of the meadow, Papoose Meadows); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  POM312337  Callitriche verna Verne Grant, H. L. Mason 1947-7-9 13294 Lassen 5 miles E of Bieber. Comment
  SEINET3828391  Callitriche verna R. F. Thorne, Larry E. De Buhr 1975-1 46986 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  HSC15373  Calochortus bruneaunis M. T. Milligan 1964-8-6 209 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  CHSC67072  Calochortus leichtlinii Willis Ball 1969-6-20 15 Lassen Found approx. 1 mile S. E. of E. L. B. S. about 50 ft. off the dirt road to the station. 1584 Comment
  SBBG15290  Calochortus leichtlinii H. and M. Dearing 1938-7-1 2237 Lassen top of pass W of Susanville 1762 Comment
  UC727118  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass 1219 Comment
  CAS-BOT-BC487964  Calochortus leichtlinii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50680 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CAS-BOT-BC487968  Calochortus leichtlinii Marcus E. A M Jones 1897-7-8 s.n. Lassen Lassen's Peak 1828 Comment
  CAS-BOT-BC483436  Calochortus macrocarpus Frances D. Payne 1955-7-1 s.n. Lassen Hayden Hill Comment
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Aug 2 2017
  UC851940  Calyptridium monospermum C. L. Hitchcock 1940-5-26 6608 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  UC852120  Calyptridium umbellatum A. A. Heller 1938-6-22 15139 Lassen 1 mi s of Westwood 1524 Comment
  UCD39132  Calyptridium umbellatum Beecher Crampton 1964-6-25 7074 Lassen 25 miles n.w. Susanville State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  UC1123631  Calystegia occidentalis subsp. occidentalis A. Simontacchi 1940-6-30 901 Lassen 2.6 mi s Ladder Butte; Halls Flat, Lassen National Forest, Ladder Butte Comment
  UC1608997  Camassia quamash subsp. breviflora Vernon H. Oswald and Lowell Ahart 1993-6-3 5475 Lassen between Poison Lake and Susanville (3.7 mi n of Hwy 44 at spur road 32N02E, on se side of Pine Creek Valley); Champs Flat Road, Pine Creek Valley 1731 Comment
  UC843733  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 mi s of Westwood 1524 Comment
  CAS-BOT-BC497555  Camassia quamash subsp. breviflora G. S. Crew 1927-6-10 55836 Lassen Norval flat Comment
  JEPS61547  Camassia quamash subsp. quamash Leland S. Smith 1927-6-10 14 Lassen Lassen National Forest, Norvell Flat Norvell Flat; Lassen National Forest, Norvell Flat 1747 Comment
  NY661118  Camelina microcarpa G. Schoolcraft 2000-5-24 2896 Lassen Near Ducasse Reservoir south of Termo, CA. 1645.9 Comment
  UCR201582  Camissonia Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  RSA0021212  Camissonia claviformis subsp. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale. 1341 Comment
  CHSC27119  Camissonia contorta Robert A. Schlising 1978-6-8 3286 Lassen SE of Eagle Lake, in streambed in Murrers Upper Meadow. 1536 Comment
  JEPS89992  Camissonia contorta Dean Wm. Taylor with Robert A. Price 1988-6-4 9768 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. Watershed 1036 Comment
  POM38345  Camissonia contorta Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  HSC24653  Camissonia contorta John Pratt 1970-6-14 18 Lassen Comment
  JEPS107981  Camissonia parvula Lowell Ahart, John Dittes 2005-6-2 11938 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  RSA271914  Camissonia pubens Christopher Davidson 1975-6-7 2758 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  NY852078  Camissonia tanacetifolia P. H. Raven 1962-5-28 17876 Lassen 0.5 mile north of Ravendale Comment
  RSA125385  Camissonia tanacetifolia Arthur R. Kruckeberg 1954-6-22 3322 Lassen 6 miles south of Likely along Highway 395 Comment
  RSA132679  Camissonia tanacetifolia I. L. Wiggins, Dorothy Wiggins 1961-6-11 16364 Lassen Along California State Highway 139, ca. 1 mile N of Grasshopper Valley. Comment
  RSA12158  Camissonia tanacetifolia subsp. quadriperforata Wayne E. Sawyer 1935-6-27 219 Lassen Long Valley. 1311 Comment
  CAS-BOT-BC160876  Camissonia tanacetifolia subsp. tanacetifolia R. K. Gierisch; D. H. Esplin 1969-7-18 3550 Lassen Near Modoc National Forest. Madeline Plains Comment
  JEPS121275  Camissonia tanacetifolia subsp. tanacetifolia Lowell Ahart, John Dittes 2013-7-22 18885 Lassen Man-made pond, about 150 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA512846  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell, Gordon H. True 1973-8-1 50209 Lassen Sierra Nevada: Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2165 Comment
  CAS-BOT-BC160872  Camissonia tanacetifolia subsp. tanacetifolia Loran C. Anderson; Kent Fish 1965-8-17 2951 Lassen Along hiway 44, in undisturbed sites of Hog Flat. 24 air miles northwest of Susanville 1676 Comment
  RSA38463  Camissonia tanacetifolia subsp. tanacetifolia P. A. Munz 1947-5-19 11883 Lassen Madeline 1677 Comment
  JEPS124378  Capsella bursa-pastoris Lowell Ahart, John Dittes 2015-7-13 20308 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1137752  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  UC773929  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  UC197292  Cardamine breweri Franklin P. Nutting Lassen Pine Creek Comment
  CHSC61025  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1993-8-3 5743 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. At the SW edge of the swamp. 1932 Comment
  JEPS120845  Cardamine pensylvanica Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18729 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS94075  Cardaria pubescens Vernon H. Oswald and Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on County Rd. 91 (Bieber-Lookout Rd.)) 1258 Comment
  UC142947  Carex angustata A. L. Hormay 1941-6-18 5 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 Comment
  SEINET7549702 Image available Carex angustata George W. Gillett 1957-7-22 883 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake. 1850 Comment
  UC1108041  Carex brainerdii E. B. Copeland 1932-8-15 Lassen below Raker Peak (woods by Lost Creek); Mount Lassen, Lost Creek 1889 Comment
  UC2015835  Carex breweri Ron Mastrogiuseppe, Joy Mastrogiuseppe 1986-8-2 4446 Lassen Lassen Volcanic National Park. Lassen Peak. Comment
  CAS-BOT-BC34933  Carex densa T. C. Fuller 1966-7-20 14963 Lassen South side of road to Pittville, 5.4 miles west of Little Valley Post Office. NW Lassen County. Comment
  CAS-BOT-BC20650  Carex douglasii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49192 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  JEPS107458  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1924590  Carex douglasii Debra Valov 2006-5-28 2006020 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  CDA33049  Carex douglasii T. C. Fuller 1963-7-15 10890 Lassen South side of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  CAS-BOT-BC19917  Carex epapillosa L. S. Smith 1918-8-11 1018 Lassen Modoc Forest. Trail to Lost Lake-T38-16. 2438 Comment
  CAS-BOT-BC19979  Carex feta John Thomas Howell 1974-7-10 50557 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC34001  Carex filifolia var. filifolia Louella Bass 1973-4-13 EV 14 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC34002  Carex filifolia var. filifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49194 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC20739  Carex fracta John Thomas Howell 1959-9-23 34889 Lassen Lassen Park. North end of Juniper Lake. 2057 Comment
  CAS-BOT-BC21304  Carex fracta John Thomas Howell; Gordon H. True 1973-8-1 50176 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  CAS-BOT-BC21305  Carex fracta John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49451 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UCD140369  Carex haydeniana John Thomas Howell 1934-6-14 12163 Lassen near Lost Lake, Warren Mountains. Comment
  CAS-BOT-BC20940  Carex heteroneura George Wilson Gillett 1957-7-21 865 Lassen Below (north of) summit of trail between Juniper Lake and Cameron Meadow. 2118 Comment
  UC1609196  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  HSC103621  Carex heteroneura Thomas W. Nelson, Jane Nelson 1985-8-10 8024 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  HSC48181  Carex integra D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19239 Lassen 2 mi. N of Westwood Comment
  UC1133501  Carex integra A. Simontacchi 1940-5-14 720 Lassen 4.1 mi wnw Aspen Well; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1609339  Carex lasiocarpa Vernon H. Oswald and Lowell Ahart 1993-8-3 5752 Lassen e Silver Lake (nw part of the swamp, just e of the Caribou Wilderness, ca. 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
  CHSC97050  Carex limosa Gordon Leppig; J. Cromwell 1997-7-27 610 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  UC1609199  Carex livida Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen e Silver Lake (just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
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May 19 2014
  CHSC67310  Carex microptera James D. Jokerst 1991-5-28 3295 Lassen Modoc Plateau. At the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. 1554 Comment
  CHSC87113  Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  SEINET10850315  Carex multicaulis R. Ondricek 1978-6-27 Ondricek 78 Lassen On Coleman Lake Rd., .7 mi ne of Lassen Co. Rd. Al. T32N, R11E, nw quarter of Sec. 34, Fredonyer Peak Quadrangle, 15' in the 1977 Burn. 1951 Comment
  JEPS96118  Carex nebrascensis Vernon H. Oswald and Lowell Ahart 1996-6-24 7882 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. Meadow on the E side of Papoose Creek N of the springs. Comment
  UCD140678  Carex nebrascensis Beecher Crampton 1964-6-26 7077 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  CAS-BOT-BC119255  Carex pachystachya John Thomas Howell 1934-7-6 12452 Lassen Harvey Valley. Comment
  CAS-BOT-BC119044  Carex pellita Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1828 Comment
  CHSC66738  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-8-1 8110 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  UC70637  Carex pellita Jos. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  SEINET13407108  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek 1768 Comment
  CHSC93433  Carex petasata Martin J. Lenz 2004-6-23 221 Lassen Approx. 0.6 air mi. WSW of Schoonamaker Lake. UTM 10 664213 E 4515435 N. Edge of seasonally wet meadow. 1707 Comment
  UC1133449  Carex petasata Robert W. Gardner 1937-6-18 G 6 Lassen Burgess Spring Experimental Range 1699 Comment
  CAS-BOT-BC118399  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49193 Lassen Elysian Valley, northwest of Janesville. 1325 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  JEPS28380  Carex raynoldsii George W. Gillett 1957-7-29 948 Lassen along trail between Butte Lake and Sang Lake; Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC118229  Carex scopulorum var. bracteosa John Thomas Howell 1934-6-14 12162 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  HSC103634  Carex scopulorum var. bracteosa Thomas W. Nelson, Jane Nelson 1985-8-10 8028 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  CHSC66414  Carex simulata Vernon H. Oswald; Lowell Ahart 1996-6-17 7815 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. Margin of a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  UC1142962  Carex straminiformis A. L. Hormay 1941-6-19 25 Lassen Squaw Valley Lassen National Forest 1737 Comment
  SEINET13715331  Carex straminiformis G. Schoolcraft 1997-8-6 2669 Lassen Diamond Mountain, N slope 2317 Comment
  CAS-BOT-BC115970  Carex subfusca Peter H. Raven; Otto Thomas Solbrig 1958-6-16 13253 Lassen 4.5 mi E of Westwood on St Hwy 36. Comment
  CAS-BOT-BC116615  Carex subfusca Hans Leschke 1960-8-8 1738 Lassen Below trail Ski Hut-Crumbaugh Lake. 1981 Comment
  CAS-BOT-BC116619  Carex subfusca George Wilson Gillett 1957-7-26 913 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CAS-BOT-BC116625  Carex subfusca Alice Eastwood; John Thomas Howell 1940-6-15 8304 Lassen Willow Creek near Hayden Hill. Comment
  RSA702448  Carex subfusca L. P. Janeway 2004-6-26 8169 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  UC2031880  Carex subfusca Nick Otting 2003-7-17 695 Lassen Cascade Mountains, Susan River, 1/2 mile NE of Devil's Corral, 5 air miles west of Susanville. Comment
  RSA201855  Carex subfusca Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  CAS-BOT-BC115283  Carex utriculata Ray Hanson 1954-8-23 s.n. Lassen Lassen Park, near Jackey Lake. Comment
  HSC95285  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  OBI75892  Carex vesicaria Anthony Baniaga 2011-8-17 503 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1978 Comment
  CAS-BOT-BC248944  Castilleja Mike Vasey 1990-6-30 9055 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CHSC106686  Castilleja angustifolia B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC14085  Castilleja angustifolia K R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5841 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  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
  JEPS94129  Castilleja angustifolia Vernon H. Oswald and Lowell Ahart 1998-5-22 9108 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  RSA17674  Castilleja angustifolia Elmer I. Applegate 1934-5-4 8921 Lassen South of Secret Valley. Comment
  HSC31355  Castilleja applegatei D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19187 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC249616  Castilleja applegatei subsp. pinetorum Doris Kildale Gillespie 1930-5-13 9367 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC249622  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-9 12527 Lassen Harvey Valley Comment
  CHSC106084  Castilleja applegatei subsp. pinetorum Lowell Ahart; John Dittes 2010-7-31 17009 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC12459  Castilleja applegatei subsp. pinetorum Robert W. Severin 1969-7-6 5 Lassen 1 mile e E.L.B.S. on road to Five Points. Comment
  CHSC36484  Castilleja applegatei subsp. pinetorum Margaret E. Halloran 1982-6-3 5 Lassen 3 1/2 mi s of jct of forest service roads 5.16 and 5.17. Comment
  CHSC7749  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-11 103 Lassen West city limits of Susanville at 'Inspiration Point. 1341 Comment
  JEPS81611  Castilleja applegatei subsp. pinetorum M. S. Taylor and B. Hammond 1982-8-27 5052 Lassen ca 6 air mi sw Doyle; Constantia Quad., Diamond Mts., Crystal Peak Area 2377 Comment
  UC1136983  Castilleja applegatei subsp. pinetorum L. R. Short and J. Warren 1936-6-5 S- 378 Lassen Burgess Spring Experiment Range; Lassen Forest 1792 Comment
  UC1537569  Castilleja applegatei subsp. pinetorum Gordon H. True Jr. 1936-6-27 563 Lassen Hot Springs Mountain 1676 Comment
  CHSC65124  Castilleja arachnoidea Vernon H. Oswald; Lowell Ahart 1995-7-24 7134 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W od Upper Stephens Medws., just S of Pine Creek. 1950 Comment
  UC1609116  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1993-6-14 5525 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd (Lassen A1), at Sandy Beach, on the w shore of Eagle Lake, on the upper beach between the road and the lake); Eagle Lake 1566 Comment
  SBBG7046  Castilleja campestris H. and M. Dearing 1939-6-6 3565 Lassen marsh on Pitt River, Bieber Comment
  CHSC60921  Castilleja campestris subsp. campestris Vernon H. Oswald; Lowell Ahart 1993-7-8 5644 Lassen Pittville Rd. (Lassen 111, 36N01) near its intersection with 22N11, 0.4 mi N of Hwy. 44, near the SE end of Poison Lake. 1709 Comment
  UCD55264  Castilleja chromosa Ellen Dean 2006-5-15 3062 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
  JEPS126527  Castilleja lacera Lowell Ahart, John Dittes 2016-6-7 21021 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  JEPS88512  Castilleja lacera Vernon H. Oswald and Lowell Ahart 1996-6-24 7842 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  CAS-BOT-BC226034  Castilleja lacera Ella D. Cantelow 1940-5-31 4439 Lassen E of McArthur Comment
  HSC20530  Castilleja linariifolia M. T. Milligan 1964-8-6 208 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS76163  Castilleja linariifolia T. I. Chuang with Fei-Mei Chuang 1977-7-25 7660 Lassen 10 mi w Madeline Comment
  HSC69066  Castilleja linariifolia Gary Schoolcraft 1979-7-5 124 Lassen Near top of Observation Peak 2134 Comment
  UC485781  Castilleja miniata H. E. and S. T. Parks Jun 1928 250 Lassen Drakesbad; Lassen National Park Comment
  CAS-BOT-BC244888  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen meadows foot of Lassen Butte. Lassen Butte Region Comment
  CHSC6269  Castilleja miniata subsp. miniata J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  CHSC81564  Castilleja minor subsp. minor Vernon H. Oswald 2001-9-26 10058 Lassen Dakin Unit of Honey Lake Wildlife Area. 1219 Comment
  CAS-BOT-BC241002  Castilleja pilosa Doughitt; Parkison 1916-6-8 4 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CHSC37346  Castilleja pilosa Jenifer Estep 1978-6-27 17 Lassen SE of Eagle L. at Mahogany L. Comment
  HSC26597  Castilleja pilosa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19190 Lassen Harvey Valley near Cone Springs Comment
  UC1483790  Castilleja pilosa Mary Meyer 1980-7-1 Lassen Champs Flat 1677 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
  UC1924576  Castilleja tenuis Debra Valov 2006-5-29 2006027 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UC27210  Castilleja tenuis J. Burtt Davy Jun 17 1897-Jun 24 1897 3369 Lassen Adobe meadows; Honey Lake Valley 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
  UC1477727  Caulanthus major var. nevadensis Teresa Prendusi 1980-7-21 30 Lassen Fredonyer Peak 2377 Comment
  HSC26519  Ceanothus cuneatus J. P. Smith, J. O. Sawyer 1972-5-6 5242 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
Read comments
Apr 29 2013
  JEPS118451  Ceanothus prostratus Lowell Ahart, John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  RSA122353  Ceanothus prostratus C. B. Bradshaw 1939-5-27 233 Lassen S end Black Mt. EF Plot 39-1, s15. 1753 Comment
  RSA38478  Ceanothus prostratus P. A. Munz 1947-5-18 11864 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1509 Comment
  UC1281295  Ceanothus prostratus H. E. McMinn 1941-8-27 5402 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
  CHSC6287  Ceanothus velutinus R. Clicquennoi 1967-7-1 37 Lassen Four miles s of Eagle Lake Biology Station off Gallatin Beach Road. 1554 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
  CDA1996  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen 1 mi. W of Johnstonville, on N side of old road to Susanville. (A27 ? Johnstonville Rd. N of Center Rd.) 0 Comment
  UCD130023  Centaurea diffusa W. A. Harvey 1964-6-23 s.n. Lassen J. E. Albaugh ranch, ca. 4 miles southwest of Adin. Comment
  CHSC71853  Centaurea squarrosa Vernon H. Oswald; Lowell Ahart 1998-9-8 9586 Lassen Kramer Rd. 3.1 mi south of Lookout. 1280 Comment
  CAS-BOT-BC281208  Centaurea stoebe subsp. micranthos Lee E. Wheeler 1962-8-15 s.n. Lassen Doyle area Comment
  CHSC113010  Centaurea virgata subsp. squarrosa Lowell Ahart; John Dittes 2013-7-23 18910 Lassen Near the summit on the north side of the Highway 299, at entrance road to quarry site, Big Valley Mountain, just east of Big Valley Summit, 2.8 miles (air) southwest of Nubieber. 1408 Comment
  RSA186838  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville Comment
  SEINET13331058 Image available Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 mi. N. of Bieber, Big Valley Comment
  JEPS46972  Centaurium exaltatum W. L. Jepson 1918-8-2 7759 Lassen Beckwith Pass 1463 Comment
  RSA715992  Centaurium muehlenbergii L. Ahart, John Dittes 2005-6-2 11977 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
  CHSC93679  Centaurium tenuiflorum Lowell Ahart; John Dittes 2005-6-2 11977 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  JEPS12581  Centromadia pungens subsp. pungens R. F. Hoover 1940-10-1 4657 Lassen between Janesville and Standish; Honey Lake Comment
  RSA755002  Cerastium glomeratum L. Ahart, John Dittes 2008-6-20 14966 Lassen About 10-100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber. 1264 Comment
  UC956834  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1947-7-9 13295 Lassen irrigation ditch 5 mi e Bieber Comment
  CAS-BOT-BC400181  Ceratophyllum demersum Milo S. Baker July 25 3644 a Lassen Eagle Lake 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
  CHSC12418  Cercocarpus ledifolius var. ledifolius Anne Linda Brisk 1969-6-19 5 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC23520  Cercocarpus ledifolius var. ledifolius Wayne O. Baum 1971-6-28 71 -47 Lassen E. slope of Gallatin Peak. 2103 Comment
  UC1136909  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  CHSC105256  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2010-7-31 16984 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC93690  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2005-6-1 11893 Lassen On the east side of Scott Road, Long Valley, about 4 3/8 miles (air) north of the intersection of Scott Road and Highway 70, about 5.7 miles (air) northwest of Hallelujah Junction. 1460 Comment
  UC1136776  Chaenactis douglasii var. douglasii L. R. Short and Wm. Gansberg 1946-7-9 S- 480 Lassen Burgess Spring Experimental Range Lassen Forest, Burgess Spring Experimental Range 1804 Comment
  CHSC64751  Chaenactis stevioides Vernon H. Oswald 1995-6-7 6839 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. 1261 Comment
  SEINET10686163  Chamaebatia foliolosa Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 149 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CHSC30603  Chamaebatiaria millefolium Mary Nesset 1975-7-16 10 Lassen E.L.B.S. water tank. 1554 Comment
  SEINET10937236  Chamaebatiaria millefolium Mary Susan Taylor 1974-5-4 Taylor 220 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
  CHSC29929  Chamaesaracha nana Robin L. Ondricek 1978-6-8 49 Lassen E side of Murrers Upper Meadow along road. 1584 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
  UC1924223  Chamaesyce serpyllifolia var. serpyllifolia Debra Valov 2004-6-8 2004251 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC62674  Cheilanthes gracillima Baker and Nutting 1894-7-30 Lassen Silver Lake 2286 Comment
  JEPS95711  Chenopodium album Vernon H. Oswald and L. Ahart 1995-8-14 7180 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  CAS-BOT-BC460932  Chenopodium hians John Thomas Howell 1934-7-8 12499 Lassen Spalding's, Eagle Lake Comment
  UC1594604 Image available Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake S side of Hwy 44, between Old Station and Susanville, 1.2 mi SE of County Road A21 1745 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
  CAS-BOT-BC451356  Chimaphila menziesii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain: Susanville. Perkin's Ranch 2133 Comment
  UC1483847  Chimaphila umbellata G. Schoolcraft 1980-7-29 343 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 Comment
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  POM105904  Chorizanthe watsonii Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
Read comments
Mar 6 2011
  UC1135264  Chrysolepis sempervirens A. Simontacchi 1940-6-15 881 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 2164 Comment
  CAS-BOT-BC140657  Chrysothamnus humilis Clare B. Hardham 1971-8-22 18391 Lassen Diamond Mountain 2346 Comment
  UC773961  Chrysothamnus humilis L. R. Short and J. Warren 1936-8-17 S- 495 Lassen Burgess Spring Experiment Range Lassen Forest 1760 Comment
  HSC103551  Chrysothamnus viscidiflorus subsp. viscidiflorus Thomas W. Nelson, Jane Nelson 1985-8-10 8030 Lassen Along north side of Silver Lake 1829 Comment
  JEPS97319  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald and L. Ahart 1995-8-14 7183 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Shrub to ca. 5 dm tall growing at roadside. Leaves spirally twisted. 1645 Comment
  UC747217  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Thomas Robbins 1945-10-7 2154 Lassen 2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  JEPS29747  Chylismia claviformis subsp. cruciformis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8502 Lassen 2 mi e Wendel junction (on road past Flanagan to Pyramid Lake, Nevada, in low areas n of Honey Lake) 1219 Comment
  CAS-BOT-BC279833  Cichorium intybus Louella Bass 1973-6-15 109 Lassen Elysian Valley 1325 Comment
  POM352119  Cichorium intybus George Willet 1935-6-28 s.n. Lassen Susanville Comment
  CDA1172  Cirsium cymosum T. C. Fuller 1963-7-16 10921 -C Lassen West of Hwy 395; 14.3 miles south of Ravendale. 0 Comment
  CDA15026  Cirsium cymosum B. Villegas 1998-8-18 s.n. Lassen Cascade Range; Hwy 299, 1 mi. W of Big Valley Summit (0.3 mi. W of milepost 7.5). Comment
  CAS-BOT-BC278005  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, on highway 299 Comment
  CAS-BOT-BC278009  Cirsium cymosum Michael A. Vincent 1999-6-9 8575 Lassen Bureau of Land Management land; Madeline Plains. Southwest of US Rt. 395, southeast of CR 515 (Termo Road), south of BLM Rd. 1614, and southwest of Termo. Along jeep road to Schott Canyon Comment
  RSA0070594  Cirsium cymosum Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8596 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  UC1136775  Cirsium cymosum var. cymosum L. R. Short and Wm. Gansberg 1936-7-9 S- 479 Lassen Burgess Spr. Exp. Range Lassen Forest 1807 Comment
  RSA0070618  Cirsium douglasii var. breweri F. W. Peirson 1926-6-22 6824 Lassen Near Hot Springs, Drakesbad, Mount Lassen National Park. 1677 Comment
  CHSC116356  Cirsium inamoenum J. R. Keck Jr.; D. L. Haws 1980-7-22 PDR 330194 Lassen Ravendale, BLM rangeland. 1625 Comment
  RSA0070635  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 Lassen North of the road, 0.4 km east of campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. Comment
  UCD170227  Cirsium occidentale var. candidissimum K. M. Meyer; A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. 1.3 miles on road 110, off Highway A21. Mixed Pine and populus forest. Near Susan River. 1821 Comment
  CDA1491  Cirsium ochrocentrum G. D. Barbe 1982-7-12 3878 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 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
  CDA37705  Cirsium ochrocentrum Robin Breckenridge 2006-8-15 s.n. Lassen Madeline Plains, Westside Road, old Basque homestead. 0 Comment
  CAS-BOT-BC286305  Cirsium scariosum John Thomas Howell 1934-7-6 12435 Lassen Harvey Valley Comment
  CAS-BOT-BC286309  Cirsium scariosum Louella Bass 1973-6-17 117 Lassen Elysian Valley 1325 Comment
  CDA1557  Cirsium scariosum T. C. Fuller, E. E. Fix 1959-7-23 2825 Lassen Near Ravendale. 0 Comment
  CAS-BOT-BC286515  Cirsium undulatum T. C. Fuller 1965-10-13 14201 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CHSC23510  Cirsium vulgare Wayne O. Baum 1971-7-6 71 -56 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC439005  Cistanthe monosperma Jeanne Janish; Carl Janish 1938-9-6 s.n. Lassen Near Summit Lake, Lassen National Park. 2042 Comment
  CAS-BOT-BC233916  Cistanthe umbellata Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1676 Comment
  NY999400  Clarkia lassenensis N. H. Holmgren 1980-7-4 9517 Lassen Observation Peak, south slope of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  CAS-BOT-BC172562  Clarkia purpurea subsp. purpurea John Thomas Howell 1974-7-10 50550 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC4775  Clarkia rhomboidea R. Carter 1967-6-27 564 Lassen Ca. 10 yds off S side of Rd. Comment
  CHSC59759  Clarkia rhomboidea Mary Meyer 1980-8-5 Lassen 2148 Comment
  UC773908  Clarkia rhomboidea L. R. Short and Wm. Gansberg 1936-7-3 S- 358 Lassen Burgess Spring Experiment Range Lassen Forest 1847 Comment
  CHSC36439  Clarkia stellata Dave Leuck 1981-6-16 20 Lassen Subway Cave on Hwy 44. Comment
  CHSC59559  Clarkia stellata Mary Meyer 1980-7-1 Lassen Along road traversing southern end of McCoy Flat. 1645 Comment
  CHSC83619  Clarkia stellata L. P. Janeway 2001-6-28 7233 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  CAS-BOT-BC439760  Claytonia rubra subsp. depressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49179 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC91185  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2005-6-1 11882 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS118455  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2011-6-20 17486 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1136873  Claytonia rubra subsp. rubra L. R. Short and Wm. Gansberg 1936-6-2 S- 359 Lassen Burgess Spring Experimental Range; Lassen Forest 1865 Comment
  UC7897  Claytonia rubra subsp. rubra M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  NY222742  Cleome platycarpa A. A. Heller 1938-6-23 15207 Lassen Ridge north of Mapes on U. S. Highway #395. Upper Sonoran Life Zone. 1371.6 Comment
  NY222746  Cleome platycarpa N. H. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  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
  JEPS42688  Cleomella parviflora J. Burtt Davy Jun 17 1897-Jun 24 1897 3352 Lassen Amedee Honey Lake Vally Comment
  CHSC100886  Cleomella plocasperma L. P. Janeway 2008-8-2 9530 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
  JEPS83689  Cleomella plocasperma Staria S. Vanderpool and Richard Vanderpool 1986-6-8 1236 a Lassen 0.5 mi w Wendel (on paved county road) 1196 Comment
  CDA25307  Cleomella plocasperma T. C. Fuller 1962-8-28 9474 Lassen Road to Wendell, 1 mile northwest of Herlong Siding, northeast of Honey Lake. 0 Comment
  HSC97103  Collinsia parviflora L. Ahart 2005-6-1 11858 Lassen 1/2 mile west of Scott Rd., Long Valley, about 2 air miles NW of the intersection of Scott Rd. and Hwy. 70. 3.9 air miles NW of Hallelujah Junction 1449 Comment
  JEPS94834  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9126 Lassen 5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  RSA0035917  Collinsia parviflora Lowell A. Ahart, John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SBBG66419  Collinsia parviflora S. W. Hutchinson -Jun-1925 Lassen Eagle Lake 1554 Comment
  UC1951082  Collinsia parviflora Debra Valov 2009-4-24 2009009 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CDA34520  Collinsia parviflora B. Villegas 2011-5-26 s.n. Lassen Susanville, 2.3 miles southwest from junction of Hwy 36 & Hwy 139. 0 Comment
  CHSC5903  Collinsia torreyi M. West 1946-6-24 Lassen Dow Butte Road. Eagle Lake. 1828 Comment
  CHSC30572  Collomia grandiflora Sori H. Shad 1970-7-1 33 Lassen Found 3/4 mile past Murrer's. Meadow near edge of road. 1524 Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  RSA122984  Collomia tinctoria L. R. Short, J. Warren 1936-6-10 s- 382 Lassen Burgess Spr. Exp. Range 1790 Comment
  SD113909  Collomia tracyi Darley F. Howe 1964-8-1 3912 Lassen Parsnip Creek, Warner Mts., Modoc National Forst 1829 Comment
  UC1567424  Comandra umbellata subsp. californica G. Schoolcraft 1989-6-7 1908 Lassen Shaffer Mountain near top Shaffer Mountain 2011 Comment
  HSC95333  Comarum palustre Gordon Leppig, Tony LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC112977  Conium maculatum Lowell Ahart; John Dittes 2013-7-23 18901 Lassen West side of the road levee, about 80 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC23535  Convolvulus arvensis L. G. Bennett 1967-7-17 180 Lassen Murrers Meadow, near Eagle Lake 1494 Comment
  CAS-BOT-BC286113  Conyza canadensis John Thomas Howell 1974-7-10 50532 Lassen Elysian Valley 1325 Comment
  JEPS107824  Conyza canadensis Lowell Ahart, John Dittes 2005-6-2 11974 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  UC1483856  Corallorhiza maculata G. Schoolcraft 1980-7-15 308 Lassen w Bieber; Big Valley Mountain timber sale area (Bureau of Land Managem 1798 Comment
  POM107536  Corallorhiza maculata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC1483855  Corallorhiza striata G. Schoolcraft 1980-7-15 309 Lassen w Bieber; Big Valley Mountain Timber Sale area 1798 Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC762620  Cordylanthus ramosus R. F. Hoover 1940-10-5 4678 Lassen Secret Valley Comment
  CHSC68861  Cornus sericea subsp. sericea Vernon Oswald; Lowell Ahart 1997-6-24 8611 Lassen South of Susanville on the north of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  NY500130  Corydalis aurea subsp. aurea N. H. Holmgren 1980-7-4 9516 Lassen Observation Peak, near top of Mountain, 17 km (10.5 miles) airline distance east of Ravendale 2420 Comment
  UC581254  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2214 Lassen just w ridge crest between Willow Creek Valley and Horse Lake 1720 Comment
  UC581283  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2314 Lassen about a mi below summit; Black Mountain 1940 Comment
  CAS-BOT-BC290392  Crepis acuminata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2294 Lassen South slope Thompson Peak, south of Janesville 2133 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
  CAS-BOT-BC291550  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-14 2335 Lassen Burgers Springs Experimental Range 1706 Comment
  SEINET8513568 Image available Crepis occidentalis A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1092 Lassen Plumas Allotment, Highway 395 into California, first median crossing after check station, turn right, follow road right (South) take, 2nd left, follow uphill road bearing Southeast until reach gray metal gate, along roadside 1541 Comment
  UC1136842  Crepis occidentalis George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 Comment
  UC540867  Crepis occidentalis David D. Keck and J. Clausen 1935-6-24 3752 Lassen 2 mi s Ravendale 1463 Comment
  UC581304  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2352 Lassen sw-facing slope of mts. along hwy from McArthur to Bieber; Big Valley Mts. 1100 Comment
  CAS-BOT-BC376564  Crepis occidentalis subsp. occidentalis M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  UC296046  Crepis pleurocarpa E. B. Babcock and J. L. Collins 1926-7-21 89 Lassen 8 mi w Susanville (on hwy to Quincy) 1371 Comment
  POM70805  Cressa truxillensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CAS-BOT-BC299713  Crocidium Louella Bass 1973-4-22 23 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  UC1587077  Crocidium multicaule G. Schoolcraft 1991-5-6 2131 Lassen 4.5 mi s Adin (along Hwy 139) 1325 Comment
  JEPS94076  Crypsis schoenoides Vernon H. Oswald and Lowell Ahart 1998-9-8 9577 Lassen Hwy. 299 at R.R. overpass on e. side of Nubieber (depression near hwy.) 1255 Comment
  UC1137644  Cryptantha affinis A. Simontacchi 1940-5-28 776 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1561921  Cryptantha ambigua Barbara Ertter with Gary Schoolcraft 1987-6-16 7199 Lassen on ne side Honey Lake (saddle on e side of Hot Springs Peak); Skeedaddle Mountains 2194 Comment
  UCD119054  Cryptantha ambigua Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  JEPS107310  Cryptantha circumscissa Lowell Ahart, John Dittes 2005-6-1 11890 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
  NY1110382  Cryptantha humilis B. J. Ertter 1987-6-16 7182 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 Comment
  UC1562830  Cryptantha humilis Barbara Ertter with Gary Schoolcraft 1987-6-16 7182 Lassen w of Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2133 Comment
  UC584347  Cryptantha humilis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2267 Lassen sw of Diamond Mt. (s of Susanville) 2164 Comment
  UC1249274  Cryptantha intermedia Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8480 Lassen 1 mi s Ravendale (40 mi ne of Susanville) 1615 Comment
  UC526165  Cryptantha pterocarya John Thomas Howell 1934-6-10 11851 Lassen 4 mi s Omira Comment
  SEINET10497288  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 267 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC6214  Cryptogramma acrostichoides P. Balch 1955-6-1 Lassen Silver Lake, Eagle Lake. 1981 Comment
  CHSC23497  Cuscuta Wayne O. Baum 1971-7-14 71 -63 Lassen Gallatin Peak. 2011 Comment
  OBI75868  Cuscuta occidentalis Anthony Baniaga 2011-8-9 492 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
  NY674779  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale, CA 1737 Comment
  CHSC60296  Cymopterus terebinthinus var. californicus Mary Ann Showers 1992-6-13 2560 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 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
  POM369283  Cynoglossum occidentale Anstruther Davidson s.n. Lassen Summit- Eagle Lake 1829 Comment
  CDA40496  Cynoglossum occidentale T. C. Fuller 1962-6-13 8997 c Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  CHSC117528  Cyperus squarrosus Lowell Ahart; John Dittes 2016-7-13 21139 Lassen Scattered along the south edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC70537  Cystopteris fragilis Clare B. Hardham 1961-6-16 7461 Lassen Diamond Peak Comment
  CHSC117185  Cystopteris fragilis Lowell Ahart; John Dittes 2016-6-7 21007 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CAS-BOT-BC208394  Dalea ornata Arnold Tiehm; Raymond Evans; James Young 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest if Litchfield 1371 Comment
  CHSC117527  Damasonium californicum Lowell Ahart; John Dittes 2016-7-13 21138 Lassen South edge of the dirt dam, 50 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC29916  Damasonium californicum Robin L. Ondricek 1978-7-5 83 Lassen Along the edges of Mahogany Lake. 2057 Comment
  CAS-BOT-BC445516  Damasonium californicum Clarence R. Quick 1964-8-4 64 -99 Lassen Reservoir at Long's cabin between Black's Mt. and Experimental Forest 1783 Comment
  CDA35647  Damasonium californicum J. R. Keck Jr. 1985-7-18 PDR# 330136 Lassen Ballard Reservoir; Near Old Station. Lassen National Forest. 0 Comment
  UC1024653  Danthonia californica Leo Whitney 1933-8-3 2201 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  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
  UC1609107  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1993-6-28 5579 Lassen Harvey Valley Rd. (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  UC773969  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  UCD61360  Danthonia unispicata John Thomas Howell 1977-6-22 52406 Lassen West of Susanville near the confluence of Willard Creek and Susan River. 1432 Comment
  JEPS79213  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CHSC67595  Delphinium andersonii James D. Jokerst 1983-5-30 1794 Lassen Ca. 1.5 mi N of Eagle Lake, ca. 50 m W of Hwy. 139, ca. 1.0 mi N of Eagle Lake Rd. 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
  UC1583981  Delphinium andersonii G. Schoolcraft 1990-6-12 2090 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC1924575  Delphinium andersonii Debra Valov 2006-5-29 2006026 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1275 Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  UC854041  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  UCD39136  Delphinium andersonii Beecher Crampton 1964-6-27 7093 Lassen West of Termo. Madeline Plains. Comment
  UCD95650  Delphinium andersonii James D. Jokerst 1983-5-30 1794 Lassen Ca.1.5 mi. N of Eagle Lake, ca. 50 m W of Hwy. 139, ca. 1.0 I N of Eagle Lake Rd. Comment
  RSA0005300  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 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
  RSA398661  Delphinium nudicaule Christopher Davidson 1975-6-6 2722 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-BC116047  Delphinium nuttallianum George Wilson Gillett 1957-7-21 863 Lassen Juniper Lake - Cameron Meadow trail; on wet swale 300 yards north of trail summit. 2118 Comment
  CHSC4927  Delphinium nuttallianum L. G. Bennett 1967-6-23 15 Lassen Immediate vicinity of Eagle Lake Biological Station, Eagle Lake. 1554 Comment
  CHSC67294  Delphinium nuttallianum James D. Jokerst 1991-5-29 3306 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  JEPS107808  Delphinium nuttallianum Lowell Ahart, John Dittes 2005-6-2 11955 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  RSA716264  Delphinium nuttallianum L. Ahart 2005-6-2 11955 Lassen Along poor dirt road, 1 mile E of Anderson Ranch home, Long Valley, 4.5 miles air N of the intersection of Scott Road and Hwy 70, 6 miles NW of Hallelujah jct. 1426 Comment
  CAS-BOT-BC116053  Delphinium nuttallianum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen West slope, Fredonyer Pass, 13.5 miles west of Susanville 1554 Comment
  CAS-BOT-BC194258  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1943-7-10 49769 Lassen Near Westwood - Sierra Nevada 1554 Comment
  CAS-BOT-BC194265  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen Snag Lake, margin of gravel bars 100 yards above lake near south shore - Lassen Volcanic National Park 1850 Comment
  CAS-BOT-BC192745  Deschampsia danthonioides Malcom A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  RSA185317  Deschampsia danthonioides Clare B. Hardham 1961-6-17 s.n. Lassen Baxter Creek, south of Susanville 1677 Comment
  UC1483828  Deschampsia danthonioides G. Schoolcraft 1980-7-28 331 Lassen meadow area e. of Tule Mt. 2042 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
  CAS-BOT-BC201810  Deschampsia elongata Clare B. Hardham 1971-8-22 18377 Lassen Diamond Mountain 2133 Comment
  CAS-BOT-BC201814  Deschampsia elongata John Thomas Howell; Gordon H. True 1973-8-1 50181 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  HSC68802  Deschampsia elongata G. Schoolcraft 1980-8-13 350 Lassen N side of Diamond Mountain. 1951 Comment
  JEPS28059  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Widow Lake 2072 Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  CHSC7706  Descurainia incana Beverley J. Wise 1969-4-29 38 Lassen 3.4 mi. north of Susanville on Rnd Valley Rd off Hwy 139. 1371 Comment
  CAS-BOT-BC43089  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  CHSC25061  Descurainia pinnata L. B. Barlow 1967-6-23 7 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CAS-BOT-BC43167  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9325 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CHSC64772  Descurainia pinnata subsp. intermedia Vernon H. Oswald 1995-5-24 6777 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel). Roadside. 1219 Comment
  CAS-BOT-BC43487  Descurainia sophia John Thomas Howell 1975-7-23 51400 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC504  Descurainia sophia J. Wakeman 1963-5-11 Lassen Six mi. east of Bieber on Hiway 89. Comment
  CHSC5236  Descurainia sophia P. Balch 1955-7-18 Lassen Stafford's Resort, Eagle Lake. 1615 Comment
  CHSC57356  Descurainia sophia B. G. Clark 1987-4-15 22 Lassen Lassen or Inyo counties. Top of knoll 1/4 mi sw of Lassen College adjacent and west of hwy 139. Comment
  CHSC93563  Descurainia sophia Lowell Ahart; John Dittes 2005-6-2 11925 A Lassen Long Valley, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CHSC99284  Descurainia sophia Lowell Ahart; John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA716273  Descurainia sophia L. Ahart, John Dittes 2005-6-2 11925 -A Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction. 1460 Comment
  CAS-BOT-BC500986  Dichelostemma multiflorum H. D. Ripley; R. C. Barneby 1943-6-14 5750 Lassen West of Susanville 1310 Comment
  SD132250  Dieteria canescens G. Helmkamp 1990-9-23 G 8 Lassen North of Ravendale. 1675 Comment
  SJSU13913  Dieteria canescens N. A. Hopkins 1986-8-28 1382 Lassen along County Road 33 (Scott Road), Lower Long Valley, N of Highway 70 & E of the Beckwourth Pass Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  UC223695  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Money Lake Valley Comment
  CHSC14038  Dieteria canescens var. shastensis S. Villard 1973-7-12 62 Lassen Slopes of Galatin Peak. Comment
  CHSC60820  Dieteria canescens var. shastensis Vernon H. Oswald; Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02), 2.0 mi N of Hwy 44, between Grays Valley and Harvey Valley, E of Poison Lake. 1734 Comment
  CAS-BOT-BC153676  Diplacus mephiticus Alice Eastwood; John Thomas Howell 1940-6-15 8325 Lassen Grasshopper Valley Comment
  CHSC26185  Diplacus mephiticus J. P. Kroessig 1977-5-23 28 Lassen Small scattered population at Eagle Lake Biological Station (CSUC), ca 37 km nnw of Susanville. 478 Comment
  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
  CHSC71133  Diplacus mephiticus Vernon H. Oswald; Lowell Ahart 1998-5-22 9118 Lassen Road to ORV parking area in Fort Sage Mtns. 1.1 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1447 Comment
  SEINET13702844  Diplacus mephiticus G. Schoolcraft 1980-5-7 225 B Lassen Honey Lake Island. 1219 Comment
  SEINET13703366  Diplacus mephiticus F. B. Headley 1915-5-28 13 Lassen Honey Lake. 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
  CAS-BOT-BC208724  Distichlis spicata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16339 Lassen On dam forming reservoir north of road 13.5 mi. E of Susanville Comment
  RSA647537  Distichlis spicata Marion P. Harthill 1972-6-18 804 Lassen Litchfield. 1311 Comment
  CAS-BOT-BC136177  Dodecatheon alpinum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  HSC17852  Dodecatheon alpinum M. T. Milligan 1964-7-16 135 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC559941  Dodecatheon conjugens Leo Whitney 1935-6-10 3211 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  UC559942  Dodecatheon conjugens Leo Whitney 1935-6-11 3225 Lassen Camp 10 Fruit Growers Supply Company Camp 10, Fruit Growers Supply Company Comment
  SEINET8561548  Dodecatheon conjugens M. J. Williams 1969-5-24 s.n. Lassen Ca 0.5 mile N of Bogart Ranger Station. Comment
  RSA340002  Downingia bacigalupii Noel Holmgren, Patricia K. Holmgren 1980-7-3 9482 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UC1024290  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (adjacent to State Highway 299); Lassen National Forest Comment
  UCD55038  Downingia bacigalupii Gerald Dickinson 1963-7-3 73 Lassen U.S. Highway 299; 1 mile west of Bieber. 1249 Comment
  POM68157  Downingia bacigalupii Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  SEINET12329644  Downingia bacigalupii N. H. Holmgren, Holmgren, P. K. 1980-1 9472 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) W of US Highway 395 from a turnoff 10.3 km 1615 Comment
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  UCD149940  Downingia bicornuta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  JEPS14500  Downingia bicornuta var. bicornuta Joseph Grinnell 1928-6-26 Lassen Poison Lake 1737 Comment
  JEPS22793  Downingia bicornuta var. bicornuta August L. Hormay 1934-5-15 Lassen 1 mi ne Halls Flat Railroad Station (on the Keddie-Nubieber (freight) branch of the W.P.R.R.) 1554 Comment
  CHSC65303  Downingia insignis Vernon H. Oswald; Lowell Ahart 1995-8-14 7184 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  JEPS106977  Downingia insignis Lisa Schultheis 1995-6-27 226 -95 Lassen East side of 395, 1.6 miles south of Ravendale Comment
  RSA0035918  Downingia laeta Lowell A. Ahart, John Dittes 2008-6-20 14928 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  POM222067  Downingia pulchella W. C. Merrill 1892-08 s.n. Lassen Bieber. Comment
  CAS-BOT-BC41370  Draba verna M. S. Taylor 1982-5-7 4428 Lassen Reno Junction on Highway 70 just east of Beckwourth Pass. 1524 Comment
  UCD99551  Drosera rotundifolia Barry Rice 2009-7-5 BR 090703 Lassen at Robbers Spring. Comment
  UC773878  Drymocallis lactea L. R. Short, J. Warren 1936-6-10 S- 425 Lassen Burgess Spring Experiment Range 1853 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  CHSC116195  Elatine Lowell Ahart; John Dittes 2015-7-13 20295 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCR227660  Elatine R. F. Thorne, Larry E. DeBuhr 1975-8-22 47213 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  JEPS123972  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS87390  Elatine californica Vernon H. Oswald and Lowell Ahart 1993-7-8 5661 Lassen 1.9 mi n Hwy. 44 (Pittville Rd (Lassen 111, 36N01), on se edge of Poison Lake); se edge Poison Lake 1706 Comment
  CAS-BOT-BC113618  Eleocharis acicularis George Wilson Gillett 1957-7-29 952 Lassen Mud flats along shore of Snag Lake, near iast inlet. 1850 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  CAS-BOT-BC113591  Eleocharis acicularis John Thomas Howell 1959-9-23 34892 Lassen Juniper Lake camp grounds, Lassen Park 2057 Comment
  CHSC117180  Eleocharis bella Lowell Ahart; John Dittes 2016-6-7 21015 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CHSC66272  Eleocharis bella Vernon H. Oswald 1996-6-24 7851 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow just S of the cabins. 1633 Comment
  JEPS121268  Eleocharis macrostachya Lowell Ahart 2013-7-22 18848 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
  UC1100699  Eleocharis quinqueflora Malcolm A. Nobs, S. Galen Smith 1949-7-21 1061 Lassen 4 mi N of Madeline Comment
  JEPS103218  Eleocharis quinqueflora G. Schoolcraft 1995-5-22 2483 Lassen Morgan Spring N of Skedaddle Mountains 1524 Comment
  HSC95170  Eleocharis suksdorfiana Gordon Leppig 1998-8-17 1045 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC803919  Elymus G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4008 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  HSC10944  Elymus X hansenii M. T. Milligan 1964-7-16 137 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  CHSC111247  Elymus cinereus B. Castro; L. P. Janeway 2012-7-2 1937 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at 'Skedaddle Ranch. 1577 Comment
  CHSC13594  Elymus cinereus J. Pitts 1972-6-23 270 Lassen 300 yds. ne of Eagle Lake Field Station. Comment
  CHSC60798  Elymus cinereus Vernon H. Oswald; Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  SEINET12737887  Elymus cinereus M. Church 2016-7-26 14 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1412 Comment
  CAS-BOT-BC227493  Elymus elymoides John Thomas Howell 1934-6-10 11866 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  UCD61568  Elymus elymoides L. Whitney 1933-8-15 Lassen Halls Flat. Lassen Forest. 1737 Comment
  UCD61624  Elymus elymoides A. A. Beetle 1941-6-28 2804 Lassen 10 miles W of Chester, rte 36. Comment
  UCR7841  Elymus elymoides Marilyn Malin 1968-6-21 248 Lassen Along roadside, near tree blazed to indicate path to the ice caves on the west side of Eagle Lake Comment
  SEINET10527886  Elymus elymoides Paul Gallian, David B. Dunn 1971-6-2 Gallian 515 Lassen 6 mi N of Hallelujah Jct on US hwy 395, in Artemesia tridentata, Jeffery pine, along high ridge & in sandy wash. 1402 Comment
  UC1136930  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 Comment
  UC1537224  Elymus elymoides subsp. elymoides Gordon H. True Jr. 1937-7-10 786 Lassen mesa n Skeedaddle Creek; Hot Spring Mountain 1524 Comment
  JEPS126503  Elymus elymoides var. californicus Jocelyn Munoz 2016-8-17 CA 350 -80 Lassen Heading north on 139, turn right onto Horse Lake Road. Continue east on Horse Lake Road passed lake. Take a left on an unnamed road about 3.5 miles east of lake. Then turn right on the first unnamed road with a NW aspect. Comment
  CHSC29902  Elymus glaucus Robin L. Ondricek 1978-7-22 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. 1584 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
  UCD61834  Elymus glaucus A. A. Beetle 1941-6-28 2803 Lassen 10 miles W of Chester, rte 36. Comment
  UCD62368  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51976 Lassen On Gold Run Creek southwest of Susanville. 1386 Comment
  CAS-BOT-BC234092  Elymus multisetus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16343 Lassen Hillside 13.5 mi. E of Susanville Comment
  CHSC111248  Elymus spicatus B. Castro; L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. 1417 Comment
  JEPS119960  Elymus trachycaulus Lowell Ahart, John Dittes 2012-7-9 18297 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  NY70852  Ephedra viridis N. H. Holmgren 1970-6-25 4380 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junction with California 70 (Hallelujah Junction) 1524.0 Comment
  UC281  Ephedra viridis J. Burtt Davy Jun 17 1897-Jun 24 1897 3342 Lassen Honey Lake Valley Honey Lake Valley (on slopes of lava hills) Comment
  SEINET5335198  Ephedra viridis F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  RSA0105578  Epilobium brachycarpum Lowell Ahart, John Dittes 2013-7-22 18845 Lassen About 10 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA252401  Epilobium brachycarpum Robert F. Thorne, C. W. Tilforth 1969-9-6 39263 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  JEPS119650  Epilobium campestre Lowell Ahart, John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC112448  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18740 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1191714  Epilobium ciliatum subsp. ciliatum Verne Grant and Irving Schneider 1947-9-6 8388 Lassen irrigation ditch w Fleming Ranch headquarters (near Wendel) Comment
  UC1583966  Epilobium ciliatum subsp. ciliatum G. Schoolcraft 1990-8-14 2123 Lassen on Hwy 139 between M.P. 56 and M.P. 57 (s of Adin) 1432 Comment
  JEPS114690  Epilobium ciliatum subsp. glandulosum Lowell Ahart, John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC113082  Epilobium densiflorum Lowell Ahart; John Dittes 2013-7-22 18878 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC30611  Epilobium hallianum G. A. Brown 1975-7-7 1 Lassen Gallatin Peak, western slope. 1990 Comment
  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
  HSC26606  Epilobium hallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19179 Lassen Harvey Valley near Cone Springs Comment
  CHSC59091  Epilobium hornemannii subsp. hornemannii Vernon H. Oswald; Lowell Ahart 1992-8-25 5184 Lassen Lassen Volcanic National Park. Grassy Creek at the S end of Snag Lake. Along the bottom of a cutbank of a creek where it enters the lake. 1853 Comment
  CAS-BOT-BC332739  Epilobium pallidum R. F. Thorne; Larry E. DeBuhr 1975-8-22 46980 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  HSC82195  Epilobium torreyi Thomas W. Nelson, Jane P. Nelson 1980-7-6 6050 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC56948  Equisetum arvense John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49463 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC12494  Equisetum arvense Carol Weld 1969-6-26 46 Lassen 7.8 miles S. W. of Eagle Lake Field Station. 1584 Comment
  CAS-BOT-BC57307  Equisetum laevigatum John Thomas Howell 1974-7-8 50473 Lassen Susanville 1295 Comment
  UC62615  Equisetum laevigatum Baker and Nutting 1894-7-5 Lassen <Dixay> Valley 1066 Comment
  CHSC76105  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8229 Lassen Along the north side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CAS-BOT-BC174120  Eremogone aculeata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16359 Lassen On ridge above NE end of Eagle Lake Comment
  CHSC4266  Eremogone congesta K. R. Stern 1967-6-24 2422 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  OBI76981  Eremogone congesta Anthony Baniaga 2011-6-23 390 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  JEPS124510 Image available Eremogone congesta Lynne C. Carter 1967-7-11 87 Lassen Willow Creek Campground, Modoc Natl. Forest, about 300 ft. up the ridge North of Ranger Station. Comment
  CAS-BOT-BC174199  Eremogone congesta var. congesta L. G. Bennett 1967-6-24 33 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow near Eagle Lake 1493 Comment
  CAS-BOT-BC174203  Eremogone congesta var. congesta Louella Bass 1973-6-14 103 Lassen Elysian Valley 1325 Comment
  CHSC29857  Eremogone congesta var. simulans Robin Ondricek 1978-6-6 32 Lassen At Murrers Upper Meadow, .5 mi E of intersection with main rd. to ELFS and tunnel crossing. 1569 Comment
  SBBG124753  Eremogone congesta var. simulans C. B. Hardham 1961-6-17 7531 Lassen Hwy 395, between Alturas and Susanville 1524 Comment
  RSA0057705  Eremogone congesta var. subcongesta L. P. Janeway 2001-6-20 7199 Lassen Modoc Plateau. Along 22 Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  JEPS19760  Eriastrum signatum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6008 Lassen along US Hwy 395 ne Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon) 1615 Comment
  CAS-BOT-BC515174  Eriastrum signatum L. S. Smith 1937-7-1 2783 Lassen Plumas Forest, Honey Lake Valley N of highway near E end of the lake Comment
  OBI82827  Eriastrum sparsiflorum Robert L. Johnson, Mikel R. Stevens 2015-7-10 3932 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  SJSU8732  Eriastrum wilcoxii M. D. Fleschner 1965-7-12 Lassen by Hwy 395, 1 mi N of Milburn 1158 Comment
  SEINET7950669 Image available Ericameria nauseosa A. Onisko, J. Jaggers, S. Massed, D. Mathews 2011-10-24 NV 030 -669 Lassen NE of Doyle and NE of Fort Sage Mountains, OHV recreation area 1230 Comment
  CAS-BOT-BC298963  Ericameria nauseosa var. hololeuca Ella Dales Cantelow 1938-10-23 2191 Lassen N of Doyle Comment
  CAS-BOT-BC298172  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley, 3 miles from Wendel on the road to Janesville 1219 Comment
  CAS-BOT-BC298176  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  OBI5655  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley; 3 mi from Wendel on the road to Janesville 1219 Comment
  UCD54540  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2724 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CAS-BOT-BC294179  Ericameria nauseosa var. speciosa G. Schoolcraft 1994-9-13 2429 Lassen Just above gate along road to Fredonyer Peak lookout 2255 Comment
  CAS-BOT-BC294183  Ericameria nauseosa var. speciosa Clare B. Hardham 1969-8-28 17426 Lassen West of Janesville 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
  CHSC76084  Ericameria nauseosa var. speciosa Lowell Ahart; Vernon H. Oswald 1999-9-13 8201 Lassen On the west side of the dirt road and 1/4 mile south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  CAS-BOT-BC299485  Ericameria nauseosa var. washoensis Gary Schoolcraft 1979-8-23 181 Lassen Just off Post Camp Road along road to Big Spring 1676 Comment
  CAS-BOT-BC293010  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 1/2 mile from Janesville on the road to Wendel - Western edge of Honey Lake Valley 1280 Comment
  CHSC77193  Ericameria suffruticosa G. Schoolcraft 1997-8-6 Lassen Diamond Mtn. 2316 Comment
  CDA18270  Erigeron G. D. Barbe 1974-8-2 1935 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET10721387  Erigeron Paul Gallian, David B. Dunn 1971-6-2 Gallian 462 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  RSA121426  Erigeron aphanactis E. Sawyer 1935-6-27 238 Lassen Long Valley 1341 Comment
  JEPS80681  Erigeron bloomeri L. R. Heckard and T. I. Chuang 1981-6-10 5532 Lassen North Eagle Lake Campground Eagle Lake (nw corner of lake) 1524 Comment
  CAS-BOT-BC294492  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-6-10 11867 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CHSC117134  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2015-6-5 11777 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 13.0 road-km south of the junction a the west end of Tuledad Canyon; 6.8 road-km north of Stage Road (which is in the eastern corner of Madeline Plains); west side of a northeasern branch of Red Rock Creek. 1695 Comment
  CHSC67162  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge n of a drainage. 1584 Comment
  UC1536740  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-27 559 Lassen near top Hot Spring Mt. 1828 Comment
  UC1536892  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-25 531 Lassen Harvey Ranger Station Harvey Valley 1706 Comment
  CHSC23483  Erigeron cervinus Wayne O. Baum 1971-7-12 71 -58 Lassen Slope of Gallatin Peak. 2042 Comment
  CAS-BOT-BC297196  Erigeron coulteri Clare B. Hardham 1971-8-22 18398 Lassen Diamond Mountain 2133 Comment
  CHSC105252  Erigeron divergens Lowell Ahart; John Dittes 2010-7-31 17004 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
  RSA516387  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  RSA339143  Erigeron divergens Margaret J. Williams 1984-6-16 84- 31 -1 Lassen Doyle Grade, County Hwy. 331, 2.6 miles W of Doyle. Comment
  RSA78916  Erigeron divergens E. K. Balls, Percy C. Everett 1952-10-10 18144 Lassen 8 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  CHSC89752  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC773845  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  JEPS95073  Erigeron elegantulus Vernon H. Oswald and Lowell Ahart 1997-5-27 8492 Lassen w side of Hwy 139 s of Willow Creek Guard Station 0.9 mi s of Forest Road 38N04 to Coyote Flat Coyote Flat; Hwy 139 1577 Comment
  UC584370  Erigeron elegantulus E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1787 Lassen roadside about 5 mi n Termo 1371 Comment
  POM36253  Erigeron filifolius Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UCD131967  Erigeron glacialis var. glacialis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volc. Nat'l Park. 2286 Comment
  CAS-BOT-BC295183  Erigeron inornatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49515 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS97369  Erigeron inornatus var. calidipetris Vernon H. Oswald and L. Ahart 1995-7-24 7146 Lassen T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor 1905 Comment
  CHSC25547  Erigeron inornatus var. inornatus Robert A. Schlising 1974-7-19 3153 Lassen SE of Eagle Lake, about 1.1 mi from Eagle Lake Field Station. Comment
  CAS-BOT-BC295470  Erigeron lassenianus var. lassenianus Clarence R. Quick 1961-6-21 61 -21 Lassen Adjacent to Road 21, Blacks Mt. Experimental Forest northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC295505  Erigeron linearis John Thomas Howell 1934-6-14 12137 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  HSC5530  Erigeron philadelphicus M. S. Baker 1893-1 Lassen Vicker's Ranch, Big Valley, collected in the summer Comment
  SJSU6631  Erigeron philadelphicus var. philadelphicus H. L. Buckalew 1961-7-9 Lassen spring by Blue Lake, Warner Mountains 1920 Comment
  UC31450  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow Dixey Valley, Adobe meadow Comment
  CHSC116927  Eriogonum J. P. Bergmann 3011-04-30 Lassen Fort Sage OHV Recreation area. 1450 Comment
  UCR67382  Eriogonum baileyi var. baileyi George K. Helmkamp 1990-10-4 M 9 A Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CHSC64804  Eriogonum caespitosum Vernon H. Oswald 1995-5-31 6795 Lassen Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  CAS-BOT-BC241834  Eriogonum caespitosum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 2 1/2 miles north of Secret Valley, C.C.C. Camp, U.S. Hy. 395 Comment
  CDA22482  Eriogonum collinum E. E. Fix 1960-6-2 Lassen 0 Comment
  NY242503  Eriogonum collinum N. H. Holmgren 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale. Comment
  RSA238630  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along Hwy 395, 4.5 miles south of Ravendale Comment
  UC1537298  Eriogonum collinum Gordon H. True Jr. 1938-9-9 912 Lassen Madeline Plains 1524 Comment
  CAS-BOT-BC246503  Eriogonum douglasii var. meridionale John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50662 Lassen Summit ridge of Diamond Mt. 2346 Comment
  UC85900  Eriogonum douglasii var. meridionale T. S. Brandegee 1872-1 Lassen Susanville Comment
  CHSC93241  Eriogonum elatum var. elatum John Dittes; Scott Chamberlain 2004-6-28 1020 B 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
  CHSC93237  Eriogonum elatum var. villosum John Dittes; Scott Chamberlain 2004-6-28 1020 A Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-mile east of Plumas County line; near meadow edge. 1511 Comment
  UC85967  Eriogonum maculatum T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  CAS-BOT-BC263048  Eriogonum maculatum Peter H. Raven; Otto T. Solbrig 1958-6-17 13271 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  RSA0009584  Eriogonum maculatum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  RSA780322  Eriogonum marifolium Elizabeth A. Kempton 2007-8-15 509 Lassen Lassen National Forest, Lassen Peak ca. 0.25 mile along trail from trailhead/parking lot. 2678 Comment
  CAS-BOT-BC267344  Eriogonum marifolium var. marifolium G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2289 Lassen East slope of Thompson Peak, south of Janesville 2346 Comment
  JEPS104110  Eriogonum microthecum var. ambiguum Lowell Ahart 2003-8-17 10518 Lassen Small drainage, ca 100 yd w of the cattle guard, on the se side of Smoke Creek Ranch Rd, ca 8-9 mi (air) ne of Highway 395, ca 30 mi (air) ne of Susanville. 1450 Comment
  CAS-BOT-BC268689  Eriogonum microthecum var. laxiflorum Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  NY572524  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-7-20 807 Lassen Lower slopes of Wagner Canyon 1402.1 Comment
  NY803460  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-22 2948 Lassen West slopes of Fort Sage Mountains ca. 4 miles northeast of Doyle, CA - ne1/4 1696 Comment
  NY803607  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-22 2949 Lassen About 3 miles northwest of Constantia, CA 1 mile west on FS Road 24N22X 1417 Comment
  SEINET5330904  Eriogonum nudum var. deductum M. J. Williams, G. H. True; J. T. Howell 1973-6-28 73 -EV-1 Lassen Elysian Valley. 1372 Comment
  RSA518444  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M- 4 Lassen South of Susanville in Plumas National Forest; north of Milford Pass. 1463 Comment
  UCR67381  Eriogonum nudum var. nudum George K. Helmkamp 1990-10-4 M 4 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CHSC27645  Eriogonum nudum var. pubiflorum Jerry Snodgrass 1978-7-10 47 Lassen Coleman L., SE of Eagle L. 1962 Comment
  JEPS126468  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-27 CA 350 -071 Lassen Along Rice Canyon Road and into Rice Canyon. Comment
  JEPS126471  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-9-2 CA 350 -065 Lassen Turn right onto Buckhorn Byway from 395. Continue past Pilgrim Lake. Turn right at the first available turn, past exclusion fence (around 20 miles). Will eventually arrived at riparian area. Comment
  OBI76967  Eriogonum nudum var. pubiflorum Anthony Baniaga 2011-8-3 484 Lassen Lassen Natl Forest. Along hwy 44, @ of 31N21. Pine Crk Valley quad T31N R8E sec 10 SE of SE 1800 Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  SEINET530683  Eriogonum nummulare Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  SEINET524403  Eriogonum ochrocephalum var. ochrocephalum Paul A. Opler 2003-6-29 Lassen Quarry, 5 mi N of Hallelujah Junction, access road to west of US 295. Comment
  UCD100769  Eriogonum ovalifolium Beecher Crampton 1964-6-26 7087 Lassen 35 miles NW of Susanville, State Hwy. 44, Gray's Valley, 3 miles north Bogard Ranger Station. Comment
  CAS-BOT-BC258739  Eriogonum ovalifolium var. ovalifolium John Thomas Howell 1934-7-7 12469 Lassen Pine Creek Flat Comment
  UC54767  Eriogonum ovalifolium var. ovalifolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee Honey Lake Valley, Amadee Comment
  HSC63563  Eriogonum prociduum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6004 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC258146  Eriogonum prociduum var. prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W. of Madeline on rd. from Adin 1676 Comment
  CHSC64845  Eriogonum prociduum var. prociduum Vernon H. Oswald 1995-6-26 6939 Lassen Modoc Plateau. Spooner Rd. ca. 0.3 - 0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  RSA780054  Eriogonum pyrolifolium Elizabeth A. Kempton 2007-8-15 510 Lassen Lassen National Forest, Lassen Peak ca. 0.25 mile along trail from trailhead/parking lot. 2678 Comment
  UC699730  Eriogonum spergulinum var. reddingianum Farris Farris 1936-6-15 Lassen Eagle Lake road 1524 Comment
  UC773863  Eriogonum spergulinum var. reddingianum L. R. Short and D. Gish 1936-6-2 S- 375 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1798 Comment
  CHSC6226  Eriogonum sphaerocephalum var. halimioides 1944-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CHSC64846  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1995-6-26 6927 Lassen Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  CHSC71393  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald 1998-7-6 9246 Lassen Shugru Reservoir in Bass Hill WA on Hwy. 395 between Susanville and Janesville, 2.7 mi southeast of Hwy. 36. Roadside flat. 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
  UC1226260  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 mi s Adin Comment
  CAS-BOT-BC262734  Eriogonum sphaerocephalum var. sphaerocephalum Louella Bass 1983-6-10 2 -83 Lassen Lassen College Campus, Susanville Comment
  CAS-BOT-BC262738  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Janesville on Highway 395 Comment
  SEINET11261384  Eriogonum sphaerocephalum var. sphaerocephalum Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9499 Lassen Observation Peak, south side of mountain, 19 km (11.5 mi) airline distance east-southeast of Ravendale.; 0 1830 Comment
  CAS-BOT-BC262768  Eriogonum strictum var. proliferum John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50658 Lassen Summit ridge of Diamond Mt. 2346 Comment
  CAS-BOT-BC267893  Eriogonum umbellatum H. D. Ripley; R. C. Barneby 1943-6-13 5413 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC267897  Eriogonum umbellatum John Thomas Howell 1973-7-10 49772 Lassen Near Westwood, Sierra Nevada 1554 Comment
  RSA0029339  Eriogonum umbellatum John F. Emmel 1991-7-22 1189 Lassen Long Valley: along Hwy 395, 3.8 road mi north of junction with Hwy 70. 1494 Comment
  CHSC99123  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
  RSA700052  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7189 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. High Cascade Range., South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  HSC17377  Eriogonum umbellatum var. modocense M. T. Milligan 1964-7-17 144 Lassen 3.5 mi. W of Eagle Lake Rd. on Marrill Flat Rd. 1677 Comment
  SD52313  Eriogonum umbellatum var. nevadense F. Stephens 1894-7-7 9210 Lassen Pete's Valley Comment
  CHSC106083  Eriogonum umbellatum var. polyanthum Lowell Ahart; John Dittes 2010-7-31 16988 Lassen About 2300 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
  POM253241  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15190 Lassen 3 mi. east of Westwood. Comment
  SEINET530706  Eriogonum umbellatum var. polyanthum Paul Opler 2008-7-7 Lassen Crater Lake Rd., 32N08. 1725 Comment
  CAS-BOT-BC262200  Eriogonum ursinum Clarence R. Quick 1964-8-5 64 -98 Lassen Cal Mt. east of Poison Lake 1767 Comment
  CAS-BOT-BC262354  Eriogonum vimineum G. Schoolcraft 1993-6-29 2306 Lassen Ash Valley RNA/ACEC at south end of T in Rd. 1539 Comment
  CHSC12414  Eriogonum vimineum Anne Linda Brisk 1969-6-21 16 Lassen 1/4 mi NE of ELBS. 1554 Comment
  CHSC27646  Eriogonum vimineum Cindy Prouty 1978-6-27 24 Lassen SE of Eagle L., Black Mtn., S of Eagle L. Field Station. 1554 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
  CHSC84440  Eriogonum vimineum Lowell Ahart 2003-8-17 10516 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 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
  UC1601758  Eriogonum vimineum Milo S. Baker Lassen Dixey Valley Comment
  UC412790  Eriogonum vimineum Franklin P. Nutting Lassen Adobe flat on n side Dixey Mts. Dixey Mts. Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  UC634595  Eriogonum vimineum Dorothy Tebbe 1929-8-1 18 Lassen along highway 1/4 mi n Susanville Comment
  CAS-BOT-BC262358  Eriogonum vimineum M. S. Jussel 1931-9-6 s.n. Lassen On the road to Mt Lassen, five miles from Westwood 1828 Comment
  HSC97608  Eriophorum gracile Vernon H. Oswald, L. Ahart 1996-6-24 7888 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1) and 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 Comment
  CHSC4262  Eriophyllum lanatum K. R. Stern 1967-6-24 2414 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  SEINET10672051  Eriophyllum lanatum Jeffrey Huber 1971-6-2 Huber 139 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high rigdge and in sandy wash. 1402 Comment
  CAS-BOT-BC308134  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11889 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC308138  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  JEPS126470  Eriophyllum lanatum var. achilleoides Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-14 CA 350 -046 Lassen Drive North on Horse Lake Road. Comment
  RSA712892  Eriophyllum lanatum var. achilleoides L. P. Janeway 2005-7-3 8453 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  UC1136992  Eriophyllum lanatum var. achilleoides George A. Fischer and Irwin H. Johnson 1933-7-14 F 250 Lassen 3.5 mi ne Grass Valley 1767 Comment
  UC566757  Eriophyllum lanatum var. achilleoides Loyd Swift 1928-6-12 Lassen Halls Flat Lassen National Forest, Halls Flat Comment
  CHSC7648  Eriophyllum lanatum var. grandiflorum Beverley J. Wise 1969-5-15 18 Lassen 28.9 mi. east of Susanville on Hwy 395. 1554 Comment
  UCR18727  Eriophyllum lanatum var. grandiflorum Frank C. Vasek 1975-7-11 750711- 06 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC301528  Eriophyllum lanatum var. integrifolium Ralph K. Gierisch 1968-7-11 3355 Lassen Lassen National Forest. Highway 44 1737 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  CHSC7701  Erodium cicutarium Beverley J. Wise 1969-4-28 43 Lassen Susanville City Limits - Junction of Chestnut Sty. and Hwy 139, South side of Chestnut St. 1310 Comment
  JEPS107866  Erodium cicutarium Lowell Ahart, John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CHSC112978  Eryngium alismifolium Lowell Ahart; John Dittes 2013-7-22 18879 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
  UC1508837  Eryngium alismifolium Gary Schoolcraft 1981-8-11 558 Lassen Silva Flat Reservoir 1706 Comment
  UC21011  Eryngium articulatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3382 Lassen Honey Lake Valley Comment
  UCD107938  Eryngium pinnatisectum Tim Kuhn 2006-7-20 53 Lassen Eagle Lake Ranger District. Comment
  CAS-BOT-BC55197  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC150215  Erythranthe John Thomas Howell 1974-7-10 s.n. Lassen Elysian Valley 1325 Comment
  CHSC61240  Erythranthe guttata P. V. Caldwell 1972-6-23 244 Lassen Headwaters of Willow Creek, Upper Murer's Meadow, along creek bank. Eagle Lake. Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  CHSC43496  Erythranthe primuloides Lowell Ahart 1974-7-9 521 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  OBI76994  Erythranthe pulsiferae Anthony Baniaga 2011-6-30 403 Lassen Lassen Natl Forest. Fredonyer Pass quad T29N R10E sec 23 NE of SE 1526 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
  CAS-BOT-BC110550  Eschscholzia John Thomas Howell 1955-7-19 30814 Lassen Sierra Nevada. East side of Beckwourth Pass. 1493 Comment
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 Comment
  JEPS127177  Eschscholzia californica subsp. californica Lowell Ahart, John Dittes 2016-7-15 21228 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UCR67467  Eucephalus breweri George K. Helmkamp 1990-10-4 M- 6 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  UC1586591  Euclidium syriacum Vernon H. Oswald 1991-5-28 4616 Lassen 5 mi ne of Bieber (Wayman Barn at w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area 1264 Comment
  CDA3708  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin) Comment
  RSA183413  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 mile west of its jct with Bassett Road (ca 2 miles S of US Hwy 299 and 4 miles SW of Adin). 1280 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
  UCD142787  Euphorbia serpillifolia J. M. Tucker 1950-7-25 1974 Lassen Road from Pittville, 35 miles northwest of Susanville. Comment
  CAS-BOT-BC312103  Eurybia integrifolia B. Bartholomew; B. Anderson 1988-7-22 4502 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC1136814  Festuca idahoensis George A. Fischer and Irwin H. Johnson 1933-7-12 F 216 Lassen Lassen National Forest 1722 Comment
  UC1609257  Festuca idahoensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5585 Lassen 1.2 mi n Hwy. 44 (e side of Grays Valley, e of Poison Lake); Grays Valley 1731 Comment
  UCD37476  Festuca idahoensis Beecher Crampton 1960-6-18 5715 Lassen Southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UCD65974  Festuca idahoensis L. Whitney 1935-6-17 3268 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10. Comment
  CHSC112779  Festuca myuros Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18784 Lassen Along a fence 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
  UCD66336  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  UCD66339  Festuca rubra A. A. Beetle 1941-6-28 2801 Lassen 10 miles W of Chester. 1524 Comment
  JEPS97399  Floerkea proserpinacoides Vernon H. Oswald and L. Ahart 1995-7-24 7127 Lassen T30N R8E SE1/4 SW1/4 Sec. 7, 6300 ft, High Cascade Range, Red Fir Forest. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21 1920 Comment
  UC173146  Floerkea proserpinacoides T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC61058  Fragaria virginiana Vernon H. Oswald; Lowell Ahart 1993-8-3 5756 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. Along the margin of the swamp. 1932 Comment
  JEPS120292  Frasera albicaulis var. modocensis Tim Kask 2013-5-29 211 Lassen On USFS Rd. 18 north of Highway 44 1/4 mi. Comment
  HSC26684  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19220 Lassen 3 mi. N of Westwood Comment
  POM109748  Fritillaria atropurpurea Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  RSA122218  Fritillaria atropurpurea K. e. Bradshaw 1939-5-27 232 Lassen Lassen Forest. S. end Black Mt. Experimental Forest, Plot 39-1. 1753 Comment
  JEPS4950  Fritillaria pudica Louise Scroggy 1918-3-24 Lassen 1/4 mi above Pit River (on Dixie Valley Road, 2 mi above Rocky Comfort School House in nw corner of Lassen Co., 15 mi n of boundary line); Dixie Valley Road Comment
  UCR67016  Gaillardia pulchella George K. Helmkamp 1990-9-23 G- 15 Lassen north of Ravendale 1677 Comment
  UC1609119  Galium aparine Vernon H. Oswald and Lowell Ahart 1993-6-14 5548 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  JEPS94548  Galium bifolium Vernon Oswald and Lowell Ahart 1997-6-24 8606 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1655 Comment
  UC1523745  Galium bolanderi Gary Schoolcraft 1981-7-21 543 Lassen ne Pittville (along Hwy 299) 1249 Comment
  SEINET11616108  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  POM68457  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  SEINET12495958  Galium multiflorum var. multiflorum G. Schoolcraft 1999-7-12 2857 Lassen North slope of Tulehead canyon near NV stateline 1737 Comment
  CDA42206  Galium trifidum Gordon Leppig and T. LaBanca 1997-6-29 540 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  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
  UCD121940  Galium trifidum subsp. subbiflorum John Thomas Howell 1959-9-23 34886 Lassen North end of Juniper Lake. 2057 Comment
  OBI77063  Garrya fremontii Anthony Baniaga 2011-6-7 310 Lassen Lassen NF.. W of 34N60. Burney Mtn East quad. T34N r3E sec 35 SW of NE 1747 Comment
  CHSC25091  Gayophytum heterozygum K. R. Stern 1967-7-1 2469 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  UC1137771  Gayophytum heterozygum August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn. Headquarters; Lassen National Forest 1706 Comment
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  SEINET10492287  Gayophytum nuttallii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 870 Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  UC1536822  Gayophytum ramosissimum Gordon H. True Jr. 1938-7-9 908 Lassen near Termo; Madeline Plains 1524 Comment
  SEINET10936377  Gayophytum ramosissimum David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17752 Lassen 3 mi s of hallelujah jct on us hwy 395 & calif 70; along roadside and in artemesia-grassland field. Comment
  JEPS47073  Gentiana calycosa Brown and Wieslander 1922-8-20 87 Lassen Martin Sprs. Eagle Lake Comment
  JEPS28703  Gentianella amarella subsp. acuta George W. Gillett 1957-7-28 929 Lassen 1 mi above Butte Lake (on Widow Lake trail); Lassen Volcanic National Park 1905 Comment
  UC1037286  Gentianopsis simplex Leo Whitney 1934-7-26 1705 Lassen ca. 7 - 8 mi. s.w. Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen Nat'l Forest, Bridge Creek Camp 1737 Comment
  POM88686  Geranium pusillum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC92757  Geranium viscosissimum L. P. Janeway 2005-7-4 8472 Lassen High Cascade Range. Gap/saddle 3.8 air km west of Harvey Mountain, at junction of Roads 35N04, 33N08, and 33N85. 1852 Comment
  NY1101445  Geranium viscosissimum var. nervosum B. M. Bartholomew 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains. 2080 Comment
  POM91888  Geum aleppicum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CHSC68762  Geum triflorum Vernon H. Oswald; Lowell Ahart 1997-5-27 8504 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the bank of a creek paralleling the road. 1546 Comment
  RSA702135  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC506983  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  UCR201713  Gilia Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  NY964494  Gilia inconspicua var. sinuata W. W. Eggleston 1911-5-20 6743 Lassen Vicinity of Doyle Station 1290 Comment
  SD131882  Gilia salticola Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mountains on northeast side of Honey Lake, talus slopes at base of rimrock on south side of Hot Springs VABM 2286 Comment
  UC1562812  Gilia salticola Barbara Ertter with Gary Schoolcraft 1987-6-16 7189 Lassen on s side Hot Springs VABM (ne side Honey Lake, Skeedaddle Mountains); Skeedaddle Mountains, s side Hot Springs VABM 2286 Comment
  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
  UC52852  Gilia sinuata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee , Amadee (Amedee?) (Honey Lake Valley) 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-BC302594  Gnaphalium palustre John Thomas Howell; Gordon H. True 1973-8-1 50211 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  HSC29999  Gnaphalium palustre D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19276 Lassen Harvey Valley near Cone Springs Comment
  CHSC66867  Gratiola neglecta Vernon H. Oswald; Lowell Ahart 1996-9-10 8280 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  CHSC36443  Grayia spinosa Theresa Costa 1982-6-2 24 Lassen Along Ravendale Rd ca. 10 yd e of Horse Lake. Comment
  CHSC5231  Grayia spinosa V. Holt 1944-6-28 Lassen S slope of Rocky Point, w side of Eagle Lake. 1627 Comment
  HSC27351  Grayia spinosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19302 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  UC7402  Grayia spinosa J. Burtt Davy Jun 17 1897-Jun 24 1897 3273 Lassen Honey Lake Valley Comment
  UC1776686  Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Near turnoff to Janesville along Hwy 395 1280 Comment
  RSA170326  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Lassen County: N of Cemetery from which ti escaped, Janesville Comment
  CAS-BOT-BC388467  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  CDA34391  Gypsophila paniculata Anonymous 1987-6-17 Lassen Off US 395 near Janesville. 0 Comment
  UC1220391  Gypsophila paniculata var. paniculata T. C. Fuller 1963-7-16 11013 Lassen Janesville; hillslope n of cemetary Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  POM126235  Hackelia cusickii Franklin P. Nutting s.n. Lassen Dixey Mountains Comment
  JEPS67931  Hackelia micrantha Jos. Grinnell 1928-6-29 Lassen Butte Lake 1889 Comment
  UCD98889  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  UCD98894  Halogeton glomeratus Thos. H. Kearney; John Thomas Howell 1951-8-20 28229 Lassen Honey Lake Valley near Herlong. 1280 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
  UCR57493  Helianthus annuus R. D. Goeden, Don W. Ricker 1989-8-22 890822- 9 Lassen Hwy 395 and Herlong Access Rd 1259 Comment
  CHSC71860  Helianthus bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-8 9572 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Roadside. 1255 Comment
  CAS-BOT-BC305662  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC118791  Helianthus cusickii L. P. Janeway; B. Castro 2015-6-5 11755 Lassen Great basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  POM253276  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  RSA17683  Helianthus cusickii Elmer I. Applegate 1934-5-4 8927 Lassen South end of Secret Valley Comment
  SJSU14474  Helianthus cusickii W. D. Pitts 1990-5-29 299 Lassen by Hwy 395 between Madeline & Ravendale 1432 Comment
  RSA0012972  Helianthus nuttallii subsp. nuttallii H. L. Mason 1947-8-11 13492 Lassen Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  CHSC92142  Heliotropium curassavicum L. P. Janeway 2005-8-27 8527 Lassen High Cascade Range. Northwest shore of Eagle Lake; east end of Sandy Beach, west side of Rocky Point. Gently sloping southwest-facing shoreline. 1550 Comment
  SEINET3871713  Heliotropium curassavicum Richard R. Halse 2010-8-25 8086 Lassen Along State Hwy. 139 ca 26/2 miles N of Susanville on the NE shore of Eagle Lake.; 0 1559 Comment
  UC1191654  Heliotropium curassavicum Verne Grant and Irving Schneider 1947-9-5 8373 Lassen n.w. shore Eagle Lake (by Sam Webb's place (Spaulding)) Comment
  SJSU8133  Hemizonella minima J. W. Tilden 1960-6-27 1500 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  UC1137704  Hemizonella minima A. Simontacchi 1940-5-28 788 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1037238  Hesperochiron californicus Leo Whitney 1935-6-20 3253 Lassen Lassen Nat'l Forest, Fruit Grower's Supply Company, Camp 10 Comment
  UC73707  Hesperochiron californicus Milo S. Baker 1896-5-12 Lassen near Palmer's Comment
  RSA59814  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  JEPS127352  Hesperolinon micranthum Lowell Ahart, John Dittes 2016-7-13 21123 Lassen 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS27189  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1682 Lassen Hwy 395 just w Tule Mountain 1645 Comment
  UC1211991  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1670 Lassen creek about 4 mi sw junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  UC17262  Hesperolinon micranthum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  UC1609506  Hesperostipa comata Vernon H. Oswald and Lowell Ahart 1993-6-14 5542 Lassen n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  JEPS96087  Heterocodon rariflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7859 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd, w side Papoose Meadows, ca 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 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
  JEPS88432  Hieracium greenei Vernon H. Oswald and Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi nnw Dyer Mtn. Lookout (ssw of Westwood) 2011 Comment
  CAS-BOT-BC318712  Hieracium horridum Wm. Bridge Cooke 1938-9-17 11703 Lassen Canyon below Horse Camp, Mount Shasta 2133 Comment
  CHSC5213  Hieracium horridum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  CAS-BOT-BC318716  Hieracium horridum Alice Eastwood 1912-9-1 2056 Lassen Mount Shasta Comment
  CHSC7206  Hippuris vulgaris Bruce K. Briggs 1969-9-10 232 Lassen Pond at Deans Meadow on N. end of meadow. Comment
  JEPS97329  Hippuris vulgaris Vernon H. Oswald 1995-8-21 7211 Lassen T38N R15E SE1/4 Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  JEPS124840 Image available Hippuris vulgaris B. Corwin 1964-6-30 119 Lassen 16 miles north of Susanville. Comment
  JEPS124841 Image available Hippuris vulgaris Joe Ammirati 1964-6-30 73 Lassen N. of Susanville 17 mi. on High. 139. Comment
  CHSC6255  Holodiscus microphyllus var. glabrescens M. West 1946-7-7 Lassen Cone Lake near east border of Lassen Nat. Park. 1828 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
  POM352505  Hordeum arizonicum A. A. Beetle 1941-6-28 s.n. Lassen 6 mi south of Ravendale, Lower slopes of Observation Peak Comment
  UCD85278  Hordeum brachyantherum A. A. Beetle 1941-6-28 2818 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  SEINET7297784 Image available Hordeum brachyantherum A. A. Beetle 1941-1 2818 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak, open meadow. Comment
  UC1024802  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1935-6-23 3291 Lassen Camp 10 Fruit Grower's Supply Company Lassen National Forest Comment
  JEPS97307  Hordeum jubatum Vernon H. Oswald and L. Ahart 1995-8-14 7189 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  UCD55288  Hordeum murinum subsp. glaucum Ellen Dean; Gary Schoolcraft 2006-5-16 3107 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  CAS-BOT-BC284897  Hordeum murinum subsp. leporinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49208 Lassen Elysian Valley northwest of Janesville 1325 Comment
  JEPS114764  Hordeum murinum subsp. leporinum Lowell Ahart, John Dittes 2008-6-20 14915 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS28711  Horkelia fusca subsp. tenella George W. Gillett 1957-7-29 942 Lassen 1/4 mi above Butte Lake (Along trail between Butte Lake and Snag Lake); Lassen Volcanic National Park 1859 Comment
  UC538008  Horkelia fusca subsp. tenella Leo Whitney 1938-7-3 3038 Lassen Bogard Ranger Station Lassen National Forest 1767 Comment
  CAS-BOT-BC143983  Horkelia fusca var. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  SBBG2949  Horkelia fusca var. tenella H. and M. Dearing 1938-6-30 2229 Lassen N of Susanville [Hwy 44] Comment
  JEPS74735  Horkelia tridentata subsp. flavescens G. S. Crew and C. S. Robinson 1927-6-25 24 Lassen near Wetwood Junction; Lassen Forest, Norval Flat 1442 Comment
  CAS-BOT-BC537968  Horkelia tridentata var. flavescens Alice Eastwood 1912-8-22 1872 Lassen Morgan Spring, Butte Region Comment
  CHSC25089  Hydrophyllum capitatum var. alpinum K. R. Stern 1967-6-25 2428 Lassen Road to Eagle Lake Biological Station, Dean's Meadow near Gallatin Peak, ca. 3 mi. S of Eagle Lake. 1676 Comment
  JEPS1628  Hydrophyllum capitatum var. alpinum Leland S. Smith Jun 1925 Lassen near Hayden Hill; Modoc National Forest 1219 Comment
  RSA122624  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen MDM, Burgess Spr. Exp. Range. 1753 Comment
  NY170062  Hymenolobus procumbens A. Tiehm 1986-5-12 10350 Lassen 1 road mi W of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CAS-BOT-BC312843  Hymenoxys lemmonii J. E. Stuart 1930-6-1 s.n. Lassen Eight miles south of Constantia on the Reno Road Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  RSA88526  Hypericum androsaemum P. H. Raven 1951-7-27 3627 Lassen Lake Ediya Comment
  CHSC7179  Idahoa scapigera Lynn R. Thomas 1969-4-17 101 Lassen E edge of Rice Canyon Rd., 4 mi. n of junction with 'back road to Litchfield;' ca. 12 mi e of Susanville. 1310 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
  SD61029  Iliamna bakeri Darley F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mountains; Modoc National Forest. 1829 Comment
  HSC17038  Ipomopsis aggregata Fred J. Kindel 1955-6-28 Lassen Susan River Comment
  RSA18257  Ipomopsis aggregata subsp. formosissima Wolf 1929-9-1 3785 Lassen Mt. Lassen National Park between Grassy Lake and Snag Lake 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
  JEPS95973  Ipomopsis congesta subsp. congesta Vernon H. Oswald and L. Ahart 1999-6-9 9745 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  UC506920  Ipomopsis tenuituba George A. Fischer and Irwin H. Johnson 1933-7-14 F 256 Lassen Lassen National Forest 1783 Comment
  UCD138823  Iris tenuissima Michael A. Vincent 1999-6-9 8586 Lassen Along US Rt. 44, ca. 1 mile west of Viola, 13 miles east of Shingletown. 1524 Comment
  UC2013402  Isatis tinctoria Debra Valov 2012-6-19 1116 Lassen Just S of junction of Co. Road 87 A at Co. Road 87. Comment
  CAS-BOT-BC69981  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake Campground, Lassen Park. 2057 Comment
  CAS-BOT-BC69982  Isoetes bolanderi John Thomas Howell 1960-8-23 36431 Lassen Emerald Lake. 2468 Comment
  UC1924201  Iva axillaris Debra Valov 2005-8-20 2005225 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1280 Comment
  UC177069  Iva axillaris subsp. robustior T. S. Brandegee 1892-6-25 Lassen Honey Lake Honey Lake Comment
  CHSC57121  Ivesia paniculata Mary Meyer 1980-7-1 Lassen Ash Valley. 1402 Comment
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  CHSC63416  Ivesia paniculata V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6352 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  CHSC64852  Ivesia paniculata Vernon H. Oswald 1995-6-26 6947 Lassen Modoc Plateau. Coyote Flat on Hunzinger Flat Rd. (FS 38N04) 5.6 mi s of its junction with Ash Valley Rd. (Lassen 527). 1783 Comment
  HSC77272  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin, 16.25 mi. W of Madeline Comment
  JEPS91208  Ivesia paniculata Dean Wm. Taylor with Glenn Clifton 1990-6-12 10875 Lassen Ash Valley, ca. 2 miles W from junction of Spooker Road with Forest Road 39N08 Comment
  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
  NY436061  Ivesia paniculata T. W. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 miles E of Adin. 1554.5 Comment
  UC1594838  Ivesia paniculata J. Stephen Shelly and Ginger V. King 1985-6-29 1029 Lassen Adin-Madeline Rd. Ash Valley (15.4 mi w of U.S. Hwy 395) 1554 Comment
  UC1142944  Juncus balticus subsp. ater A. L. Hormay 1941-6-18 4 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UCD141340  Juncus balticus subsp. ater Herbert L. Mason; Verne Grant 1947-7-9 13297 Lassen 5 miles east of Bieber. Comment
  CHSC66277  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1996-6-24 7852 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At a pile of fence posts on the W side of the meadow just S of the cabins. 1633 Comment
  CHSC68886  Juncus hemiendytus var. hemiendytus Vernon Oswald; Lowell Ahart 1997-6-24 8653 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. Meadow. 2249 Comment
  JEPS126565  Juncus hemiendytus var. hemiendytus Lowell Ahart, John Dittes 2016-6-7 20991 Lassen 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC2487  Juncus mexicanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3283 Lassen Tule Confederacy Honey Lake Valley Comment
  SEINET10533379  Juncus mexicanus Douglas G. LeDoux, David B. Dunn 1975-5-25 LeDoux 791 Lassen Collected 3 miles n of milford on hwy. 395 At honey lake campgrounds Comment
  CDA33205  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC95312  Juncus nevadensis Gordon Leppig 1998-8-17 1041 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UCD141622  Juncus nevadensis John Thomas Howell 1959-9-23 34884 Lassen North end of Juniper Lake. 2057 Comment
  CHSC112772  Juncus nevadensis var. nevadensis Lowell Ahart; John Dittes 2013-7-23 18906 Lassen On the southwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA0105591  Juncus nevadensis var. nevadensis Lowell Ahart, John Dittes 2013-7-23 18906 Lassen On the southwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60461  Juncus orthophyllus Mary Ann Showers 1992-6-13 2537 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  HSC22875  Juncus orthophyllus John Pratt 1970-6-13 11 Lassen 1677 Comment
  POM110894  Juncus orthophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC279914  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley 1740 Comment
  JEPS121379  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, yellow pine forest Comment
  HSC1211  Juniperus californica M. L. Stuart 1965-5-2 55 Lassen 2 mi. N of Termo on Hwy. 395 Comment
  CHSC13798  Juniperus occidentalis Cathy Crittenden 1970-7-8 26 Lassen About 300 yds. From five corners on road to Mahogany Lake. 1767 Comment
  UCD133775  Juniperus occidentalis John Thomas Howell; Gordon H. True 1973-8-1 50252 Lassen 5 miles from Susanville; dry hills on Gold Run Creek. 1310 Comment
  SEINET5334961  Juniperus occidentalis J. Vetter 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  SEINET5334982  Juniperus occidentalis W. Priest 1956-4-22 s.n. Lassen about 2 miles north of Susanville 1524 Comment
  RSA302156  Juniperus occidentalis var. occidentalis J. R. Shevock 1971-4-9 943 Lassen Hwy 299 1372 Comment
  UCR4294  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-8-31 650831- 03 Lassen Calif. Hwy 139, 12.4 mi south of Adin Comment
  SD139404  Juniperus osteosperma F. C. Vasek 1964-9-12 day 6 Lassen U. S. 395, 5.2 miles north of its junction with State Highway 70 (U. S.40) 1480 Comment
  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
  JEPS97366  Kelloggia galioides Vernon H. Oswald and L. Ahart 1995-7-24 7133 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
  UC889305  Kelloggia galioides C. L. Hitchcock 1940-5-26 6602 Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  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
  CHSC59133  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1992-8-25 5195 Lassen Lassen Volcanic National Park. Slope at the SE corner of Snag Lake. 1853 Comment
  CHSC113011  Lactuca serriola Lowell Ahart; John Dittes 2013-7-23 18887 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC5067  Lactuca serriola L. Stites 1967-7-4 122 Lassen Collects at Eagle Lake Biology Station. 1371 Comment
  CHSC76088  Lactuca tatarica subsp. pulchella Lowell Ahart; Vernon H. Oswald 1999-9-13 8233 Lassen On the strand of Eagle Lake, west of Highway 139, near the south end of the lake and highway, Eagle Lake. 1554 Comment
  UC74070  Lactuca tatarica subsp. pulchella J. Burtt Davy 1897-6-17 Lassen Comment
  CAS-BOT-BC341483  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CAS-BOT-BC341487  Lagophylla ramosissima John Thomas Howell 1973-8-1 50156 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CDA18264  Lagophylla ramosissima subsp. ramosissima G. D. Barbe 1974-8-2 1926 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CHSC99304  Lamium amplexicaule Lowell Ahart; John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC112414  Lasthenia glaberrima Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18739 Lassen Near a drainage filled with dirt from construction of a pond, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS89760  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout 0.5 mi s of the Modoc County Line (Big Valley, Pit River Watershed); Big Valley, Pit River Watershed 1249 Comment
  RSA0042601  Lasthenia glaberrima Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen About 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC7669  Lathyrus brownii Beverley J. Wise 1969-5-9 58 Lassen 10.5 mi West of Susanville on Forest service rd. no. 8246 off Hwy 36. 1615 Comment
  UC1584016  Lathyrus lanszwertii var. aridus G. Schoolcraft 1990-5-15 2043 Lassen about 2 mi s Nubieber; John's Valley 1402 Comment
  CHSC60718  Layia glandulosa Vernon H. Oswald; Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). On the N side of the road. 1566 Comment
  JEPS87525  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  SEINET10759249  Layia glandulosa Billy Joe Cox 1971-6-2 Cox 3089 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  RSA164325  Layia glandulosa subsp. glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, south of Susanville. Plants of the Sierra Nevada Mountains. Comment
  RSA337273  Layia glandulosa subsp. glandulosa Noel Holmgren, Patricia K. Holmgren 1980-7-4 9506 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 1890 Comment
  UC55668  Lemna minuscula Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley, Cold Springs Cold Springs; Willow Creek Valley, Cold Springs Comment
  HSC95316  Lemna minuta Gordon Leppig 1998-8-17 1048 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1101286  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-7-21 1051 Lassen 1 mi e of Madeline Comment
  CAS-BOT-BC88821  Lepidium campestre Louella Bass 1974-5-23 EV 143 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UCD55157  Lepidium dictyotum Ellen Dean 2006-5-15 3045 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  CAS-BOT-BC89168  Lepidium draba Louella Bass 1977-6-12 77 -4 Lassen Elysian Valley. Comment
  CAS-BOT-BC89718  Lepidium latifolium John Thomas Howell 1975-7-23 51413 Lassen Sierra Nevada. On Highway 395 between Johnstonville and Janesville. 1280 Comment
  CDA3797  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen Madelaine Plains , on east side of road, Highway 395 to Litchfield, 4.7 miles south of Ravendale. 0 Comment
  UCD115696  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen 75 sq. ft. infestation on east side of road, Hwy 395 to Litchfield, 4.7 miles south of Ravendale, Madelaine Plains. Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. Comment
  SFV1490  Lepidium perfoliatum I. L. Wiggins, D. B. Wiggins 1961-6-11 16332 Lassen 13.5 miles east of Susanville. 1240 Comment
  UC1126714  Lepidium perfoliatum A. Simontacchi 1940-6-8 829 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1123943  Leptodactylon pungens E. Sawyer 1935-6-27 230 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  POM74003  Leptosiphon ciliatus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC13629  Leptosiphon harknessii M. S. Taylor 1974-6-25 290 Lassen Vernal pool ca. 4 ft s of road, ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville. 1524 Comment
  CAS-BOT-BC334598  Leucanthemum vulgare G. Schoolcraft 1987-6-17 1746 Lassen Along Hwy 36 about 3 miles east of Westwood 1554 Comment
  HSC30081  Leucocrinum montanum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19264 Lassen Harvey Valley near Cone Springs Comment
  UC1553405  Leucocrinum montanum Gary Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  UC1136693  Lewisia nevadensis A. Simontacchi 1940-5-5 714 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat quadrangle Comment
  CAS-BOT-BC444185  Lewisia nevadensis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13.5 miles west of Susanville. Comment
  CAS-BOT-BC283769  Leymus cinereus Margaret Williams; Steven Williams 1974-7-26 74 -L-41 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  CAS-BOT-BC283773  Leymus cinereus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16336 Lassen 13.5 miles E of Susanville Comment
  CDA7155  Leymus cinereus G. Schoolcraft 1993-9-18 s.n. Lassen 1 mile N of Sagehen on W side of Hwy 395. Comment
  UC593547  Leymus cinereus E. B. Babcock and G. L. Stebbins Jr. 1936-6-8 1779 Lassen 4 mi s Ravendale (e-facing slope of creek at n end of Valley); Secret Valley 1371 Comment
  RSA299171  Leymus triticoides J. T. Howell 1974-7-9 50467 Lassen Susanville 1296 Comment
  UC38251  Leymus triticoides J. Burtt Davy Jun 17 1897-Jun 24 1897 3320 Lassen Honey Lake Valley Comment
  UCD65590  Leymus triticoides R. Tofsrud 1947-7-1 218 Lassen Near Thermos. Comment
  CAS-BOT-BC274464  Leymus triticoides G. Schoolcraft 1999-6-28 2843 Lassen Flats se. of Herlong 1219 Comment
  UC1142948  Lilaea scilloides A. L. Hormay 1941-6-18 5 a Lassen Little Harvey Valley; Lassen National Forest 1676 Comment
  CAS-BOT-BC130709  Lilium pardalinum Louella Bass 1973-6-15 114 Lassen Elysian Valley 1325 Comment
  RSA508635  Lilium washingtonianum Mrs. R. M. Austin 1880-7-20 s.n. Lassen Mount Dyer [SW edge of Lassen Co.] Comment
  CHSC99734  Limosella aquatica Lowell Ahart; John Dittes 2008-6-20 14927 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  JEPS96128  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, edge of Papoose Creek where it leaves the N end of the meadow 1633 Comment
  JEPS107873  Linanthus ciliatus Lowell Ahart, John Dittes 2005-6-2 11936 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
  SEINET10496792  Linanthus ciliatus Mary Susan Taylor 1974-1 Taylor 284 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CDA33308  Linanthus pungens F. Taylor, Agric. Comm. 1932-9-1 Lassen Beiber; near Niles Ranch 0 Comment
  UC106752  Linanthus septentrionalis T. S. Brandegee 1892-6-30 Lassen Jonesville Comment
  UC1107337  Linanthus septentrionalis Jean Langenheim 1957-6-22 4367 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  UC1136855  Linum lewisii L. R. Short and D. Gish 1936-6-5 S 385 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1760 Comment
  JEPS117582  Linum lewisii var. lewisii Lowell Ahart, John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1136912  Lithophragma glabrum L. R. Short 1936-4-28 S- 337 Lassen Harvey Valley; Lassen National Forest, Harvey Valley 1706 Comment
  JEPS650  Lithophragma tenellum Viola Brainerd Baird 1921-7-4 Lassen Drakesbad, (Resort) Comment
  SBBG125299  Lithospermum arvense L. Ahart, J. Dittes 2012-7-11 18351 Lassen N edge of a farmed field, S side of hwy, ca. 100 yards E of Cable Rd and Pittville Rd, 2.16 mi NNE of Pittville, 3955 feet E of Lassen-Shasta County Line, Fall River Valley 1205 Comment
  JEPS107869  Lithospermum ruderale Lowell Ahart, John Dittes 2005-6-2 11932 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  POM72685  Lithospermum ruderale Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1136831  Lithospermum ruderale George A. Fischer and Irwin H. Johnson 1933-7-19 F 262 Lassen Lassen; Sec. 2 1783 Comment
  SEINET10456166  Lithospermum ruderale Paul Gallian, David B. Dunn 1971-6-2 Gallian 463 Lassen 6 mi. N of Hallelujah Jct. on US Hwy 395. 1402 Comment
  CHSC7698  Lolium multiflorum Beverley J. Wise 1969-5-23 132 Lassen 34.8 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  SEINET8588616  Lomatium austiniae S. Jesselson, A. Ortega, J. White, A. Rosenblum 2015-5-28 NV 030 -1064 Lassen Plumas allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line. 1547 Comment
  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
  JEPS96063  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1996-6-24 7855 Lassen 2.5 mi. s. Eagle lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow ca. 0.3 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  CHSC77178  Lomatium canbyi G. Schoolcraft 1993-4-27 2255 Lassen Ash Valley RNA/ACEC. 1554 Comment
  UC1137733  Lomatium dissectum var. multifidum L. R. Short 1936-5-12 S- 348 Lassen Lassen Forest, Burgess Spring Experimental Range 1834 Comment
  POM78249  Lomatium donnellii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  JEPS94116  Lomatium macrocarpum Vernon H. Oswald and Lowell Ahart 1998-5-22 9110 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1402 Comment
  RSA724325  Lomatium macrocarpum Richard Halse 1977-5-22 1549 Lassen Along Highway 395, 9.5 miles north of Madeline 1490 Comment
  RSA517344  Lomatium nevadense Barbara Ertter, Gary Schoolcraft 1987-6-16 s.n. Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  UC1951074  Lomatium nevadense Debra Valov 2009-4-25 2009017 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  OBI48160  Lomatium nevadense Rhonda Riggins 1989-4-27 1651 Lassen U.S. 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co. line. 1676 Comment
  UC1123084  Lomatium nevadense var. parishii A. Simontacchi 1940-5-10 689 A Lassen 7.3 mi. w. Havey Mt. Lookout (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  UC1199508 Image available Lomatium ravenii Lincoln Constance and Rimo Bacigalupi 1959-6-14 3672 Lassen 1 mi s Ravendale; ; Ravendale, Lassen Co. 1463 Comment
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Jun 6 2012
  UC1479584 Image available Lomatium ravenii Gary Schoolcraft 1980-5-6 218 A Lassen Honey Lake Island 1219 Comment
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Oct 26 2017
  UCR183195  Lomatium ravenii Jim Andre, G. L. Clifton 1993-6-2 7716 Lassen Along Hwy 395 c. 25 mi NE of Susanville at Viewland exit, east of Shaffer Mtn 1349 Comment
  OBI81733  Lomatium ravenii Tracey Call, Viola Call 1961-5-30 2048 Lassen about 2 miles south of Ravendale Comment
  CHSC112191  Lomatium roseanum Dean Wm. Taylor 2012-6-7 21235 Lassen Sierra Nevada. Diamond Mts.: Ridgetop 1 mile east of Diamond Peak. 2225 Comment
  CHSC42628  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2050 Lassen Hwy 36, 15.0 mi e of Plumas-Lassen Co. line, 3.5 mi ne of Fredonyer Pass. 1508 Comment
  RSA724326  Lomatium vaginatum Richard Halse 1977-5-22 1548 Lassen Along Highway 395, 9.5 miles north of Madeline 1490 Comment
  CHSC61026  Lonicera cauriana Vernon H. Oswald; Lowell Ahart 1993-8-3 5751 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC29915  Lotus corniculatus Robin L. Ondricek 1978-8-27 129 Lassen Cultivated field ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  JEPS87400  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5608 Lassen 1.5 mi ne of Aspen Well (n of Hwy 44 on Harvey Rd One (34N27), n of Harvey Valley, ne of Poison Lake); Harvey Rd One 1761 Comment
  JEPS107457  Lotus purshianus var. purshianus Lowell Ahart, John Dittes 2005-6-2 11970 -A Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  NY716011  Lotus tenuis A. J. Cronquist 1959-6-17 8474 Lassen Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville 1311 Comment
  NY716012  Lotus tenuis G. Schoolcraft 1988-7-7 1819 Lassen Near creek crossing northwest of Horne Ranch 1646 Comment
  RSA122900  Lotus unifoliolatus G. A. Fischer, Irwin H. Johnson 1933-7-12 193 Lassen Grass Valley 1695 Comment
  CHSC110911  Ludwigia palustris Lowell Ahart; John Dittes 2012-7-9 18291 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
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  CHSC37703  Lupinus arbustus M. S. Taylor 1982-8-27 5051 Lassen Crystal Peak, Diamond Mt, 6 air mi sw of Doyle. 2377 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CHSC905  Lupinus arbustus R. Gein 1946-6-20 Lassen Mt. Fredonyer. 2133 Comment
  UCD35731  Lupinus arbustus Beecher Crampton 1960-6-18 5724 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch; northeastern part of the county. 1981 Comment
  SEINET5327673  Lupinus arbustus H. Durio 1979-5-23 s.n. Lassen Meyers Ranch, Adin 1372 Comment
  SEINET10484655  Lupinus arbustus subsp. calcaratus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2577 Lassen 6 miles s of adin; along cal hwy 139 right-of-way; in basalt clay, grassy road Bank; artemisia, juniper assoc. 1372 Comment
  CHSC5285  Lupinus arbustus var. calcaratus 1927-6-1 Lassen Eagle Lake. Mt. Freedonyer. 2072 Comment
  CHSC106689  Lupinus argenteus B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CAS-BOT-BC196338  Lupinus argenteus var. argenteus H. D. Ripley; R. C. Barneby 1944-5-30 5975 Lassen Ravendale 1676 Comment
  CAS-BOT-BC208728  Lupinus argenteus var. heteranthus F. Payne 1929-7-12 74 Lassen Lost Lake, Warner Mts. 2286 Comment
  JEPS65006  Lupinus argenteus var. heteranthus Frances D. Payne 1929-7-12 74 Lassen ridge above Lost Lake (northeastesrn Lassen County); Warner Moutnains, ridge above Lost Lake 2286 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
  UC1129453  Lupinus argenteus var. heteranthus E. Sawyer 1935-6-21 229 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  UC83091  Lupinus argenteus var. heteranthus T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  SEINET5327878  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 mi W of Doyle Comment
  HSC28310  Lupinus brevicaulis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19280 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  RSA687493  Lupinus caudatus M. Bourell 1997-5-31 5879 Lassen Wendel Road 10.9 miles southeast of Highway 395. Comment
  SEINET12161686  Lupinus caudatus N. E. Heiken 1978-1 57 Lassen SE of Eagle L. T31N R11E Sec22 1554 Comment
  SEINET10490715  Lupinus caudatus subsp. caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25n, r17e, se1/4, sec 8. Doyle quad. Corolla blue. In sandy sagebrush Scrub, in doyle, ca 0.5 mi. E of hwy 395. 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
  JEPS88246  Lupinus lepidus var. confertus Vernon H. Oswald and Lowell Ahart 1996-6-17 7807 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, on edge of Susan River E of Devils Corral Trailhead and w of 6.0 mi post); Modoc Plateau, Susan River 1402 Comment
  SFV18614  Lupinus lepidus var. confertus T. W. Nelson, J. P. Nelson 1990-7-14 8776 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  CHSC5290  Lupinus lepidus var. sellulus 1944-2-7 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  CHSC66243  Lupinus lepidus var. sellulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7867 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  SEINET10904060  Lupinus lepidus var. sellulus Mary Merello 1993-6-27 Merello 741 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  UC1537122  Lupinus lepidus var. sellulus Gordon H. True Jr. 1936-6-25 535 Lassen slopes e Harvey Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  SEINET10488726  Lupinus leucophyllus Charles Piper Smith 1947-6-13 Smith 47448 Lassen Highway 299, adin, 1.3 mi west Comment
  UCD107961  Lupinus leucophyllus G. Schoolcraft 1994-6-9 2347 Lassen 1 1/2 m. NE of Hwy. 139 on Grasshopper-Temo Rd. 1615 Comment
  CHSC112399  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18781 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS126528  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2016-6-7 21018 Lassen On the west edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC70372  Lupinus microcarpus var. microcarpus Milo S. Baker 1893-1 Lassen Cra<ig?>s Comment
  CDA27535  Lupinus microcarpus var. microcarpus T. C. Fuller 1963-6-1 10623 Lassen West side of road to Susanville, 2.2 miles south of Pittville. 0 Comment
  CAS-BOT-BC202120  Lupinus nevadensis Doris Kildale Gillespie 1930-5-13 9373 Lassen Beteen Susanville and Janesville Comment
  CHSC71085  Lupinus nevadensis Vernon H. Oswald; Lowell Ahart 1998-5-22 9113 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
  UC574453  Lupinus onustus M. E. Jones 1897-6-26 Lassen Perkin's Ranch Susanville (Susanville) 1463 Comment
  SEINET10871085  Lupinus polycarpus Marcus E. Jones 1897-6-26 Jones s.n. Lassen Susanville, perkin's ranch. 1463 Comment
  NY747611  Lupinus polyphyllus var. saxosus H. D. D. Ripley 1944-5-30 5982 Lassen 2 miles south of Madeline 1707 Comment
  CHSC64788  Lupinus pusillus var. intermontanus Vernon H. Oswald 1995-5-31 6818 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  RSA32777  Lupinus subvexus var. subvexus A. A. Heller 1938-6-23 15219 Lassen Along U. S. H ighway 395 between Termo and Madeline. 1524 Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  CHSC4269  Luzula macrantha K. R. Stern 1967-6-24 2419 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagel Lake Biological Station. 1554 Comment
  HSC95311  Lycopus uniflorus Gordon Leppig 1998-8-17 1051 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS97326  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  RSA0105577  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 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
  OBI55502  Madia citrigracilis David J. Keil 1992-7-25 23608 Lassen Along hwy 36, 9.1 mi E of Plumas County line, W of Susanville Comment
  CAS-BOT-BC342657  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  CHSC4904  Madia elegans Bill Wilson 1967-7-15 163 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  CAS-BOT-BC343696  Madia elegans John Thomas Howell 1974-7-8 50458 Lassen Just north of Milford Comment
  UC89448  Madia elegans W. E. Bryant Lassen Comment
  RSA518406  Madia elegans subsp. elegans George K. Helmkamp 1990-9-23 A- 6 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  CAS-BOT-BC344298  Madia exigua John Thomas Howell 1973-7-10 49782 Lassen Fredonyer Pass 1737 Comment
  JEPS89663  Madia glomerata Dean W. Taylor 1989-8-4 10423 Lassen Hwy. 299 at Muck Valley Rd. ca. 2 mi. w. Nubieber (Modoc Plateau); Modoc Plateau 1539 Comment
  SEINET515862  Madia glomerata Vernon H. Oswald 1998-9-8 9576 Lassen Hwy. 299 at the railroad overpass on the east side of Nubieber. 1256 Comment
  UC1594645  Madia glomerata Vernon H. Oswald and Lowell Ahart 1992-7-16 5130 Lassen on si side Bridge Creek Spring Road (County Rd 112, Forest Rd. 31N06) (ca 0.4 mi e of Champs Flat Rd (County Rd 105, Forest Rd 32N02), between Old Station and Susanville); Feather Lake 1749 Comment
  OBI55501  Madia glomerata David J. Keil, Kathleen Keil 1992-7-25 23607 Lassen Along hwy 36, 9.1 mi E of Plumas County line, W of Susanville Comment
  UCD134274  Madia glomerata J. M. Tucker 1950-7-25 1975 Lassen road from Pittville, 33 miles northwest of Susanville. Comment
  RSA338583  Madia gracilis Noel Holmgren, Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale. 1677 Comment
  CAS-BOT-BC512878  Maianthemum stellatum Louella Bass 1973-6-17 120 Lassen Elysian Valley 1325 Comment
  RSA164326  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Gold Run Creek south of Susanville. Comment
  UC1523757  Malacothrix floccifera Gary Schoolcraft 1983-7-6 1068 Lassen w of Susanville (n of Gold Run Road) 1463 Comment
  UC585134  Malacothrix glabrata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1767 Lassen ridge above Red Rock 1524 Comment
  SEINET11601669 Image available Malacothrix glabrata F. B. Henning 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CHSC113089  Malva neglecta Lowell Ahart; John Dittes 2013-7-22 18877 Lassen East of a drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC71144  Marsilea Clarence R. Quick 1962-6-17 62 -26 Lassen Swains Hole, south of Blacks Mountain Experimental station 1554 Comment
  UC62420  Marsilea oligospora Baker and Nutting 1894-7-25 Lassen near Eagle Lake Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  HSC935  Marsilea vestita Fred J. Kindel 1955-6-25 Lassen Eagle Lake Comment
  POM260428  Marsilea vestita C. L. Hitchcock 1940-5-26 6649 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  JEPS127277  Marsilea vestita subsp. vestita Lowell Ahart, John Dittes 2016-7-13 21130 -B Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC91314  Matricaria discoidea Lowell Ahart; John Dittes 2005-6-1 11895 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
  RSA715623  Matricaria matricarioides L. Ahart, John Dittes 2005-6-1 11895 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  CAS-BOT-BC348267  Matricaria occidentalis M. S. Taylor 1982-6-12 4651 Lassen In Hartson Lake Refuge, ca. 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville 1222 Comment
  SEINET10475266  Matricaria occidentalis Mary Susan Taylor 1982-6-12 Taylor 4651 Lassen 4010 ft. T28N R14E se sec 3. Standish quad. Alkali flats in Hartson Lake Refuge, 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville. 1222 Comment
  UCD107934  Medicago sativa P. B. Kennedy 1927-9-1 s.n. Lassen Standish. Comment
  CAS-BOT-BC269351  Melica californica Gary Schoolcraft 1985-6-12 1420 Lassen CA-5, slopes of Fredonyer Peak, 33-12-35 NW 2194 Comment
  RSA0011454  Mentha arvensis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46983 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  SJSU11391  Mentha arvensis J. W. Tilden 1960-6-27 1521 Lassen by Moonlight Rd, 5 mi E of Westwood 1524 Comment
  CDA40725  Mentha canadensis T. C. Fuller, R. C. Bechtel & R. Bradley 1981-7-9 20383 Lassen West end of the dam of Smoke Creek Reservoir. 0 Comment
  CHSC48604  Mentzelia albicaulis Vernon Oswald 1986-5-28 2055 Lassen Rd. 201 on the w side of Eagle Lake 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  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
  JEPS117360  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
  JEPS94107  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9137 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  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
  JEPS124816 Image available Mentzelia albicaulis Joe Ammirati 1964-6-30 70 Lassen N. of Susanville ca. 12.3 mi. on HW 139. Comment
  HSC15864  Mentzelia dispersa R. G. Means 1962-7-4 69 Lassen 15.5 mi. N of Susanville, Hwy. 139 1524 Comment
  CHSC13731  Mentzelia laevicaulis S. Villard 1973-7-18 54 Lassen Hwy. 139 4 mi. N of Susanville on E side of road. Comment
  UC1121656  Mentzelia montana Robert W. Gardner 1937-6-18 G 22 Lassen Halls Flat Quadrangle, Burgess Spring Experimental Range Comment
  CHSC27075  Menyanthes trifoliata Robert A. Schlising 1978-8-1 3332 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  CHSC27165  Menyanthes trifoliata J. D. Prouty 1978-7-28 35 Lassen Murrers Upper Meadow, e of Eagle Lake. Boggy, central portion of wet meadow. 1545 Comment
  CHSC7717  Mertensia longiflora Beverley J. Wise 1969-5-3 3 Lassen 12 mi. N.E. of Susanville on Lass. Co. Rd. 216 off Las. Co. Rd. 215. On bank of Willow Creek. 1554 Comment
  CHSC61179  Micranthes nidifica Vernon H. Oswald; Lowell Ahart 1993-5-12 5388 Lassen Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. Meadow on the S side of the road. 1719 Comment
  CHSC6266  Micranthes oregana M. West 1946-7-12 Lassen Stephens Ranch. 1905 Comment
  CHSC96720  Micranthes oregana Gordon Leppig; T. LaBanca, L. Arguello 1997-6-28 506 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  SEINET11601925 Image available Microseris laciniata subsp. siskiyouensis G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area S. of TulePatch Spring Comment
  CHSC66235  Microseris nutans Vernon H. Oswald; Lowell Ahart 1996-6-24 7866 .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. On the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  UC35776  Microseris nutans M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  CAS-BOT-BC349297  Microseris nutans Clarence R. Quick 1961-6-21 61 -34 Lassen 0.8 mile north off Road 1, Blacks Mountain Experimental Forest, northeast of Lassen Peak 1798 Comment
  CHSC7702  Microsteris gracilis Beverley J. Wise 1969-4-13 42 Lassen 2.4 mi. east of junction Hwy 395 and Las. Co. Rd. 388 (Smoke Creek Road). 1371 Comment
  CHSC99150  Microsteris gracilis Lowell Ahart; John Dittes 2008-6-20 14929 Lassen Around vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET4673741  Microsteris gracilis Leigh A. Johnson 1993-4-23 93 -004 Lassen Jct. HWY 395 and road to Ramhorn Campground and Painter Flat ca. 60 miles south of Alturis. 1650 Comment
  SEINET10496963  Microsteris gracilis subsp. gracilis Mary Susan Taylor 1982-5-7 Taylor 4429 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  NY963937  Microsteris gracilis var. humilior V. E. Grant 1956-5-18 9802 Lassen About 8 miles south of Madeline 1280 Comment
  SEINET13764907  Mimetanthe pilosa M. J. Williams 1974-7-26 74 -L-29 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  RSA505419  Mimulus breviflorus Rimo Bacigalupi, S. Galen Smith 1957-6-28 5998 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline 1616 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
  JEPS10491  Mimulus microphyllus Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  CDA38387  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen By south side of Highway 44, vicinity of Bogard Campground. Comment
  JEPS63626  Mimulus nanus var. jepsonii G. S. Crew and C. S. Robinson 1927-6-25 23 Lassen near Wetwood Junction; Lassen Forest, Norval Flat 1747 Comment
  SEINET10756203 Image available Mimulus nanus var. jepsonii Willis L. Jepson 1910-6-10 Jepson 4112 Lassen Twin Lakes (Grassy Lake). 2225 Comment
  RSA126736B  Mimulus nanus var. mephiticus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  RSA535802  Mimulus nanus var. mephiticus David M. Thompson 1988-6-1 923 Lassen 2.7 mi NW of Milford along Hwy 395. 1250 Comment
  UC27047  Mimulus nanus var. mephiticus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC886157  Mimulus nanus var. mephiticus A. A. Heller 1938-6-22 15188 Lassen about 1 1/2 mi s Westwood 1524 Comment
  UC1553406  Mimulus nanus var. nanus Gary Schoolcraft 1988-6-20 1813 Lassen 16 mi w Madeline; Ash Valley 1584 Comment
  POM43553  Mimulus suksdorfii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  UC1609129  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1993-6-3 5486 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y) junction with Lassen 21 (32N02) to Eagle Lake (on w edge of valley, between Poison Lake and Susanville); Pine Creek Valley 1731 Comment
  UC1609384  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1993-6-14 5522 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89)); Eagle Lake 1566 Comment
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Nov 22 2007
  CAS-BOT-BC384031  Mirabilis laevis var. villosa M. Bourell 1997-5-31 5881 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  JEPS94562  Mitella pentandra Vernon Oswald and Lowell Ahart 1997-6-24 8615 Lassen slope along Forest Rd. 29N43 5.4 mi e Gold Run Rd. (n side of mtn., s of Susanville); Diamond Mtn. 1889 Comment
  UC477503  Monardella glauca Geo. A. Fisher 1928-6-12 27 Lassen Lassen Forest 1615 Comment
  UC1124581  Monardella odoratissima subsp. glauca H. P. Hagge 1929-9-11 19 Lassen Logan Mtn. Eagle Lake Quadrangle Comment
  UC124967  Monardella odoratissima subsp. pallida T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UC1537599  Monardella odoratissima subsp. pallida Gordon H. True Jr. 1938-7-14 961 Lassen Just north of summit Milford Grade 1767 Comment
  UC1567380  Monolepis nuttalliana G. Schoolcraft 1989-5-16 1879 Lassen w. of Hwy. 395 Secret Valley 1347 Comment
  UC1746003  Monolepis nuttalliana Annetta M. Carter 1945-9-30 1721 a Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC526137  Monolepis pusilla John Thomas Howell 1934-6-10 11895 Lassen Horse Lake Comment
  CHSC59564  Montia chamissoi Mary Meyer 1980-5-15 531 Lassen In streams along rocks and in moist riparian sites. 1371 Comment
  CHSC60764  Montia chamissoi Vernon H. Oswald; Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02), 5.3 mi E of Lassen 105 (32N28Y), near Summit Camp, ca. 7 mi (air) W of Eagle Lake. Common in shallow water and on wet soil along a streamlet draining into a pond located in a small meadow surrounded by open pine woodland with an understory of sagebrush. 1889 Comment
  NY497728  Montia chamissoi G. Schoolcraft 1993-6-1 2272 Lassen Upper Secret Creek, south of Tule Patch Spring 1463.0 Comment
  UC1136741  Montia chamissoi A. Simontacchi 1940-5-21 763 Lassen 4.1 mi sse of Blacks Mountain (Lassen National Forest); Lassen National Forest 1737 Comment
  UC963894  Montia chamissoi Milo S. Baker 1952-5-23 12421 a Lassen e of Chester (Hwy 36) Comment
  JEPS94476  Montia linearis Vernon H. Oswald and Lowell Ahart 1997-5-27 8497 Lassen 0.1 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, small creek paralleling the road); Forest Route 38N04 1546 Comment
  POM115416  Muhlenbergia asperifolia Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1137155  Muhlenbergia asperifolia August L. Hormay 1932-8-12 Lassen se edge of lake Lassen National Forest, Eagle Lake Comment
  UC1776691  Muhlenbergia asperifolia G. Schoolcraft 1999-7-7 2854 Lassen about 9 miles NE of Ravendale - dune N of Horne Ranch Road 1621 Comment
  UCD86529  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UCD86548  Muhlenbergia asperifolia John Thomas Howell; Gordon H. True 1973-8-1 50147 Lassen Roadside in Mountain Meadows east of Westwood. 1554 Comment
  CHSC96693  Muhlenbergia filiformis Gordon Leppig; Juli Neander, Kai Neader 1997-7-25 680 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  UCD86724  Muhlenbergia filiformis L. Whitney 1935-6-21 3250 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. 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
  RSA268992  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1972-7-24 5809 Lassen 22 miles NW of Susanville in vicinity of Silver Lake, along Hwy 44, Lassen Nat'l Forest 1707 Comment
  CAS-BOT-BC275082  Muhlenbergia richardsonis Malcom A. Nobs; S. Galen Smith 1949-7-21 1060 Lassen 4 miles N of Madeline Comment
  CHSC58862  Muhlenbergia richardsonis Vernon H. Oswald; Lowell Ahart 1992-7-16 5105 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. On the margin of the lake. 1745 Comment
  CHSC91191  Muilla transmontana Lowell Ahart; John Dittes 2005-6-1 11855 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
  UC1483824  Muilla transmontana G. Schoolcraft 1980-6-6 255 Lassen sw Herlong; Bird Canyon 1341 Comment
  CAS-BOT-BC515651  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen NW corner of Secret Valley near Karlo Comment
  HSC63965  Muilla transmontana Teresa Prendusi 1980-5-8 Lassen Balls Canyon N of Shaffer Mtn. 6 mi. W of Hwy. 395 1372 Comment
  NY492639  Myosurus apetalus K. L. Chambers 1963-5-4 2026 Lassen Highway 395, 10 miles north of junction with Alt. Highway 40 (later renumbered as Highway 70). Comment
  CAS-BOT-BC83320  Myosurus minimus James Jokerst 1983-7-25 1890 Lassen Near Madeline Plains. 1614 Comment
  CHSC99498  Myosurus minimus Lowell Ahart; John Dittes 2008-6-20 14940 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC30584  Myriophyllum sibiricum P. V. Caldwell 1972-6-16 264 Lassen 3/4 miles E, on Forest Rd. 5, 1 1/2 miles from the station in Kildeere ond. Comment
  CHSC5257  Myriophyllum sibiricum A. Santos 1946-7-12 Lassen Eagle Lake. Pine Creek Slough. 1584 Comment
  SEINET2055396  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the South side of Buckhorn road to Ravendale, about 6 road miles West of state line 1698 Comment
  UC1101499  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-7-30 8195 Lassen W end of Tule Lake. Comment
Read comments
Aug 12 2008
  UC971978  Nama lobbii Annetta Carter 1946-8-19 1777 Lassen crest of ridge ten mi ne Susanville; ne of Susanville 1676 Comment
  CAS-BOT-BC60340  Nasturtium officinale D. L. Stites 1967-6-24 29 Lassen Collected ca. 3.5 miles southeast ELBS Upper Murrer Meadow. 1524 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
  UC1184057  Navarretia breweri Jean Langenheim 1957-6-22 4365 Lassen Said Valley Reservoir, ne part of Lassen County Said Valley Reservoir Comment
  CHSC1241  Navarretia capillaris 1944-6-30 Lassen Grasshopper Valley, N. of Eagle Lake. 1615 Comment
  CHSC6208  Navarretia divaricata W. Vinyard 1946-6-12 Lassen Eagle Lake. Willow Creek. 1371 Comment
  JEPS17719  Navarretia divaricata subsp. vividior Rimo Bacigalupi with G. T. Robbins 1955-7-19 5372 Lassen 10.3 mi se Adin (along Ash Valley road between Adin and Madeline) 1524 Comment
  CHSC117216  Navarretia intertexta Lowell Ahart; John Dittes 2016-6-7 21001 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS127278  Navarretia intertexta subsp. intertexta Lowell Ahart, John Dittes 2016-7-13 21131 Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC23856  Navarretia intertexta subsp. propinqua Glenda Foster 1975-7-12 101 Lassen Along edges of Fall River Mills Road ca. 1 mile n of Highway 44. Comment
  CHSC58848  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5111 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. On the bed of the creek on the bed of the reservoir. Blue-flowered plants collected at Long Lake. 1691 Comment
  UC1594649  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5111 Lassen s side Hwy. 44 (Bridge Creek entering McCoy Flat Reservoir, between Old Station and Susanville); McCoy Flat Reservoir, Bridge Creek 1691 Comment
  CHSC1253  Navarretia leptalea 1951-7-8 Lassen Pit River. 1524 Comment
  CHSC112753  Navarretia leucocephala subsp. leucocephala Lowell Ahart; John Dittes 2013-7-22 18851 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS114396  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  RSA0035408  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA702601  Navarretia leucocephala subsp. minima L. P. Janeway 2004-6-26 8145 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1137571  Navarretia leucocephala subsp. minima A. Simontacchi 1940-6-7 893 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1537488  Navarretia leucocephala subsp. minima Gordon H. True Jr. 1936-6-25 528 Lassen e of Harvey Ranger Station; Harvey Valley 1706 Comment
  SEINET2440299  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2005-7-28 05 -222 Lassen Lassen Natl. Forest, NE Long Lake vicinity. Off Hwy 44 at mile marker 20.74. At junction of spur road 31N01 leading from Hwy 44 and 31N51, which runs along NE edge of lake.; 0 1727 Comment
  SEINET10458443  Nemacladus rigidus Rupert C. Barneby 1943-6-15 Barneby 5765 Lassen Smoke Creek northeast of Viewland 1341 Comment
  JEPS107402  Nemophila parviflora var. austiniae Lowell Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CAS-BOT-BC349855  Nestotus stenophyllus Alice Eastwood; John Thomas Howell 1940-6-15 8314 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC55804  Nicotiana attenuata Vernon H. Oswald 1991-9-23 4875 Lassen Lassen Volcanic Park. Butte Lake in the northeast corner of the park. Collected on the strand of the lake at its outlet; along the east side of the lake. 1841 Comment
  CHSC65361  Nicotiana attenuata Vernon H. Oswald; Lowell Ahart 1995-8-14 7182 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  UC1191768  Nicotiana attenuata Verne Grant and Irving Schneider 1947-8-1 8235 Lassen e end Tule Lake Comment
  CDA41135  Nicotiana attenuata T. C. Fuller 1962-8-28 9477 Lassen Secret Valley, Highway 395, 3.3 miles north of road to Karlo. 0 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
  UCD50215  Nymphaea odorata subsp. tuberosa Daniel B. Marcum 2004-6-1 s.n. Lassen Near warm spring in the Fall River Valley, Lassen County. 1005 Comment
  SEINET10453107  Oenothera deltoides Mary Susan Taylor 1982-6-12 Taylor 4652 Lassen T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft. 1280 Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  UC874023  Oenothera flava subsp. flava C. L. Hitchcock 1940-5-26 6642 Lassen overflow of river 1 mi w Bieber; Pitt River Comment
  SD64323  Oenothera tanacetifolia D. F. Howe 1966-8-25 Lassen 4.5 miles south of Alturas on Hwy #395. 1676 Comment
  UC157874  Olsynium douglasii var. douglasii Milo S. Baker 1890-1 Lassen Milford Comment
  CAS-BOT-BC350043  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1845 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  SEINET5766936  Orobanche corymbosa F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  HSC24668  Orobanche vallicola John Pratt 1970-7-5 64 Lassen 1250 Comment
  RSA516524  Orthocarpus campestris Helen-Mar Wheeler 1952-7-11 s.n. Lassen South of Madeline. Comment
  CHSC37345  Orthocarpus cuspidatus subsp. cryptanthus J. D. Prouty 1978-6-28 5 Lassen Lower Dry L., SE of Eagle L. 1645 Comment
  CHSC5910  Orthocarpus cuspidatus subsp. cryptanthus M. West 1946-6-20 Lassen Edge of Grasshopper Valley. 1630 Comment
  HSC63830  Orthocarpus cuspidatus subsp. cryptanthus Teresa Prendusi 1980-7-8 Lassen Grasshopper Ridge, 37 mi. N of Susanville off Hwy. 139, 5 mi. E of Grasshopper Valley 1738 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
  CHSC78408  Oryzopsis exigua Vernon H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 2000-6-18 9929 Lassen East-northeast of the lookout on Observation Peak located east of Ravendale. 2377 Comment
  HSC69075  Osmorhiza occidentalis Gary Schoolcraft 1980-7-29 342 Lassen Widow Peak Area 1585 Comment
  SD7889  Oxyria digyna Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
  RSA616541  Oxytheca dendroidea 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
  UC768463  Oxytheca dendroidea subsp. dendroidea R. F. Hoover 1940-10-1 4656 Lassen Janesville Comment
  UCR92119  Oxytheca dendroidea subsp. dendroidea G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  CHSC101059  Packera cana John Dittes 2008-5-22 1534 Lassen Modoc Plateau; ca. 15.4 air miles southeast of Adin, ca. 3.6 air miles east of Hayden Hill, ca 0.3 mile southeast of intersection of Hwy 139 and FS Road 36N02; edge of wooded volcanic toe-slope on northeast side of Willow Creek. 485 Comment
  HSC81188  Packera cana Thomas W. Nelson, Jane P. Nelson 1980-7-6 5990 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS84965  Packera cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7194 Lassen Honey Lake Skeedaddle Mountains, Hot Springs Peak (ne side, saddle on e side of peak) 2194 Comment
  UC1924213  Packera eurycephala var. eurycephala Debra Valov 2004-6-9 2004270 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  UC35992  Packera subnuda M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC65093  Packera subnuda var. subnuda Vernon H. Oswald; Lowell Ahart 1995-7-24 7136 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. In meadow bordering the creek. 1905 Comment
  CAS-BOT-BC10426  Paeonia brownii 1927-7-1 47 Lassen Bogard R.S. pasture, Lassen Forest 1712 Comment
  CHSC29926  Paeonia brownii Robin L. Ondricek 1978-6-6 80 Lassen Deans Meadow. 1950 Comment
  CHSC6195  Paeonia brownii P. Balch 1955-7-22 Lassen Roadside meadow 3 1/2 mi. from Antelope Lookout. Eagle Lake. 2133 Comment
  SEINET10537856  Paeonia brownii Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2604 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC112794  Panicum Lowell Ahart; John Dittes 2013-7-23 18909 Lassen On the east side of the gravel road, north-south road west of Big Canal, 0.76 mile north of State Highway 299, 4.9 miles (air) northeast of Bieber, Big Valley. 1257 Comment
  POM115996  Panicum capillare Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CDA5733  Pectocarya penicillata L. Ahart, J. Dittes 2005-6-1 11907 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  CHSC64871  Pectocarya setosa Vernon H. Oswald; Lowell Ahart 1995-6-19 6892 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. On a slope on the n side of the road. 1383 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
  CHSC5004  Pedicularis semibarbata K. C. Newman 1967-7-14 80 Lassen Collected near Silver Lake, along the road just past the picnic area in dry soil. 1828 Comment
  CHSC5899  Pedicularis semibarbata P. Balch 1955-7-20 Lassen Eagle Lake. 5 mi from Antelope Lookout. 2072 Comment
  JEPS7229  Penstemon Jos. Grinnell 1928-6-26 Lassen Cinder Cone, SE slope 2103 Comment
  JEPS27949  Penstemon davidsonii var. davidsonii Frances D. Payne 1929-7-12 82 Lassen above Camp 1, N of Lost Lake Warner Range, E slope of southern end 2286 Comment
  UC1063371  Penstemon deustus A. Simontacchi 1940-6-4 795 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  POM203062  Penstemon deustus subsp. heterander J. T. Howell 1934-7-9 12523 Lassen Pine Creek Flat Comment
  POM195126  Penstemon deustus subsp. sudans D. D. Keck 1930-7-23 948 Lassen Susanville. 1280 Comment
  CHSC93676  Penstemon deustus var. pedicellatus Lowell Ahart; John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  SEINET5326727 Image available Penstemon deustus var. pedicellatus P. A. Lehenbauer 1937-5-30 s.n. Lassen 60 miles north of Reno, on Feather River, near Feather River Inn. Comment
  NY600715  Penstemon gracilentus B. J. Ertter 1988-7-25 7866 Lassen Ridge of Diamond Mountains ca. 1.5 miles east of Diamond Peak, ca. 10 airmiles due south of Susanville. 2255.5 Comment
  RSA408033  Penstemon gracilentus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1537436  Penstemon gracilentus Gordon H. True Jr. 1938-7-14 959 Lassen summit on Milford Grade , just on n slope (just on n slope) 1676 Comment
  UC477494  Penstemon gracilentus A. G. Brenneis 1928-7-3 9 Lassen Jesson Valley Lassen Forest, Jesson Valley 1463 Comment
  RSA0065446  Penstemon laetus M. P. Harthill 1971-6-20 207 Lassen Ravendale. Comment
  UC887183  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mi s Westwood; s of Westwood 1524 Comment
  NY627261  Penstemon neotericus F. W. Pennell 1940-7-23 26248 Lassen Route 36, 3 miles northwest of Westwood 1585.0 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
  POM172676  Penstemon newberryi subsp. newberryi Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  SEINET10744553  Penstemon newberryi var. newberryi Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 843 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10. T31N R7E S35 NW 1/4. 1980 Comment
  CHSC37349  Penstemon roezlii Jennifer Estep 1978-6-27 19 Lassen Dry L., E of Eagle L. 1645 Comment
  JEPS29104  Penstemon roezlii Lauramay T. Dempster 1961-6-17 1680 Lassen just w Tule Mountain; just w of Tule Mountain 1645 Comment
  POM44788  Penstemon roezlii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CAS-BOT-BC239497  Penstemon rydbergii var. oreocharis Louella Bass 1973-5-29 EV 50 Lassen Elysian Valley 1325 Comment
  CHSC30588  Penstemon rydbergii var. oreocharis Marc Held 1972-6-29 23 Lassen South end of Dean's Meadow. Comment
  HSC63732  Penstemon rydbergii var. oreocharis Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N end of Eagle Lake 1707 Comment
  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
  NY650948  Penstemon rydbergii var. oreocharis H. D. D. Ripley 1943-6-13 5706 Lassen 8 miles south of Milford 1859.3 Comment
  NY651292  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen 1 mile south of Westwood 1524.0 Comment
  NY651296  Penstemon rydbergii var. oreocharis L. Constance 1938-6-10 2322 Lassen 1.5 miles northeast of Robber Creek, near Westwood 1219.2 Comment
  RSA0115350  Penstemon rydbergii var. oreocharis Lowell A. Ahart, John Dittes 2008-6-20 14919 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
  JEPS101465  Penstemon speciosus Dean W. Taylor 1974-6-14 3721 Lassen Janesville Grade road about 4 miles SSW Janesville, Plumas National Forest 1706 Comment
  NY660816  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen Southwest slopes of Cold Springs Mountain 1890 Comment
  NY661007  Penstemon speciosus A. J. Cronquist 1959-6-16 8455 Lassen 26 miles northwest of Reno Comment
  POM195125  Penstemon speciosus D. D. Keck 1930-7-23 950 Lassen Susanville. 1280 Comment
  NY660811  Penstemon speciosus D. W. McNeal 1983-6-5 2836 Lassen Road bank beside Highway #395, 9.2 miles north of the Plumas Co. line. Comment
  NY660833  Penstemon speciosus F. W. Pennell 1940-6-10 25786 Lassen Route 36, 3 miles northwest of Westwood 1645.9 Comment
  UCSB11863  Penstemon speciosus Haller, John 1961-6-26 Lassen Hat Creek- Susanville Road, about 14 mi E of Calif. 89 at Subway Cave 1737 Comment
  NY660819  Penstemon speciosus subsp. speciosus F. D. Payne 1929-7-12 86 Lassen Ridge above Lost Lake, southern end of the Warner Range. 2286.0 Comment
  CAS-BOT-BC243405  Penstemon sudans H. D. Ripley; R. C. Barneby 1943-6-14 5739 Lassen W. of Susanville 1371 Comment
  CHSC43495  Penstemon sudans Lowell Ahart; John Thomas Howell 1974-7-9 531 Lassen Along Eagle Lake Road, about 3 1/2 miles north-west of Susanville. 1584 Comment
  CHSC4798  Penstemon sudans R. Carter 1967-7-13 587 Lassen On S. side of Rd. ca. 1 mi NE of Eagle Lake Biology Station. 1584 Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  NY661808  Penstemon sudans D. D. Keck 1935-6-25 3756 Lassen Susanville; just west of town Comment
  OBI75899  Penstemon sudans Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 478 Lassen Lassen Natl Forst. Hwy 36, ca. 1/4 mi E of "Fredonyer Pass Winter OHV Parking Lot" Fredonyer Pass quad T29N R10E sec 2 NW of SW 1950 Comment
  UC1012466  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36 w Susanville; w of Susanville 1371 Comment
  UC1036207  Penstemon sudans George W. Gillett 1953-7-13 274 Lassen Highway 36 one mi e Fredonyer Pass; Lassen National Forest, e of Fredonyer Pass 1706 Comment
  UC423647  Penstemon sudans David D. Keck 1930-7-23 953 Lassen 4 mi w Susanville; Sierra Nevada 1463 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
  SEINET5323637 Image available Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen In rimrock NE of Shaffer Mtn 1356 Comment
  UC2027331  Penstemon venustus Anthony Baniaga and R. Bomberger 2011-7-28 479 Lassen Lassen National Forest. Along Highway 36. Fredonyer Pass quadrangle Comment
  POM91106  Peraphyllum ramosissimum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 6 miles north. 1524 Comment
  CHSC29907  Perideridia bolanderi Robin Ondricek; Wesley Dempsey 1978-6-7 43 Lassen Ridge E of Lower Dry Lake, 12.5 mi N of Susanville. 1706 Comment
  CHSC42647  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1986-5-28 2049 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 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
  CAS-BOT-BC423339  Peritoma platycarpa Noel H. Holmgren; Patricia K. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC423340  Peritoma platycarpa Peter H. Raven 1962-5-28 17874 Lassen 7.7 miles north of Litchfield. Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  CHSC61234  Persicaria amphibia P. V. Caldwell 1972-7-16 297 Lassen At foot of Black Mtn. on e shore of Eagle Lake. Comment
  CHSC6229  Persicaria amphibia J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  OBI77201  Persicaria amphibia Anthony Baniaga 2011-7-23 517 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1707 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
  RSA38630  Phacelia adenophora P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale. 1341 Comment
  UC932059  Phacelia adenophora Verne Grant and Alva Grant 1947-8-1 8225 Lassen on dike of irrigation ditch s Madeline Comment
  RSA22955  Phacelia bicolor Elmer I. Applegate 1934-5-4 8928 Lassen South of Secret Valley. Comment
  CHSC71089  Phacelia bicolor var. bicolor Vernon H. Oswald; Lowell Ahart 1998-5-22 9132 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  UC1609410  Phacelia glandulifera Vernon H. Oswald and Lowell Ahart 1993-6-14 5541 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), n side of rd); Eagle Lake 1566 Comment
  SJSU11244  Phacelia hastata J. W. Tilden 1960-6-27 1499 Lassen foot of Moonlight Rd, outskirts of Westwood 1524 Comment
  GMDRC6948  Phacelia hastata subsp. hastata J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31421 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  POM203779  Phacelia heterophylla subsp. virgata J. T. Howell 1934-7-10 12553 Lassen Black s Mt. Comment
  RSA122631  Phacelia heterophylla subsp. virgata L. R. Short 1936-6-30 S- 463 Lassen Burgess Spr. Exp. Range. 1817 Comment
  RSA129732  Phacelia heterophylla subsp. virgata L. R. Short, Wm Gansberg 1936-7-9 S- 478 Lassen Burgess Spr. Exp. Range. 1796 Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  UC1537529  Phacelia humilis Gordon H. True Jr. 1936-6-27 565 Lassen n slope Hot Springs Mountain 1676 Comment
  SDSU6647  Phacelia humilis D. F. Howe 1964-7-1 3914 Lassen 4.8 miles from Harvey Creek on ridge road, warner Mts. Modoc National Forest. 2134 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
  RSA516986  Phacelia humilis var. humilis Barbara Ertter, Gary Schoolcraft 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak. 2195 Comment
  SBBG64994  Phacelia linearis S. W. Hutchinson -Jun-1925 395 Lassen Eagle Lake 1554 Comment
  RSA152684  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16357 Lassen On hillside near northeast end of Eagle Lake. Comment
  NY1056435  Phacelia lutea var. glandulifera R. R. Halse 1974-6-27 1055 Lassen In a road cut along U.S. Highway 395, 5.4 miles south of Ravendale 1620 Comment
  NY1056443  Phacelia lutea var. glandulifera N. H. Holmgren 1978-6-11 8931 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  NY1056439  Phacelia lutea var. glandulifera W. W. Eggleston 1911-7-7 7166 Lassen Secret Valley 1330 Comment
  NY1058138  Phacelia ramosissima var. eremophila N. H. Holmgren 1980-7-4 9508 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  SEINET7356303  Phacelia ramosissima var. eremophila Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9508 Lassen Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0 1890 Comment
  CAS-BOT-BC265823  Phalaris arundinacea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49500 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  CHSC41845  Phleum pratense P. V. Caldwell 1972-7-12 272 Lassen Eagle Lake. On banks from Eagle Lake to Papoose Meadows on Papoose Creek. Comment
  UC1100411  Phleum pratense Malcolm A. Nobs and S. Galen Smith 1949-7-21 1056 Lassen 4 mi n Madeline Comment
  JEPS69974  Phlox diffusa Frances D. Payne 1929-7-12 76 Lassen above Lost Lake (se extremity of Warner Mountains); Warner Mountains 2286 Comment
  UC2042998  Phlox diffusa Barbara Ertter 1990-5-13 8964 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  POM64961  Phlox diffusa subsp. diffusa Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  POM74334  Phlox diffusa subsp. subcarinata Marcus E. Jones 1897-6-18 10489 Lassen Chat. 1524 Comment
  UC579783  Phlox longifolia subsp. compacta David D. Keck and J. Clausen 1935-6-24 3744 Lassen 2 mi s Ravendale Comment
  OBI76927  Phlox speciosa subsp. occidentalis Anthony Baniaga 2011-6-11 333 Lassen Lassen Natl forest. At intersection of A1 and Sydnes Rd, N side of Eagle lake. Troxel Point quad T33N R11E sec 21 1623 Comment
  RSA0029644  Phlox speciosa subsp. occidentalis Anthony Baniaga 2011-6-11 333 Lassen Lassen National Forest. At intersection of A1 and Sydnes Rd, north side of Eagle Lake. 1623 Comment
  CHSC106569  Phlox stansburyi K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 Comment
  UC932052  Phlox stansburyi Verne Grant and Alva Grant 1947-5-5 7979 Lassen n of Honey Lake Valley Comment
  UCD118472  Phlox stansburyi var. brevifolia Grady L. Webster 1989-5-13 7716 Lassen 2.5 mi E of Beckworth Pass. Comment
  CHSC60669  Phoenicaulis cheiranthoides Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5272 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 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
  CHSC7709  Phoenicaulis cheiranthoides Beverley J. Wise 1969-3-4 34 Lassen 1.5 mi. north of Susanville on Hwy 139. 50 feet w of rd. 1341 Comment
  JEPS94479  Phoenicaulis cheiranthoides Vernon H. Oswald and Lowell Ahart 1997-5-27 8490 Lassen 38.2 mi n of Susanville (e side of Highway 139 at a small farm pond, 7.4 mi n of Eagle Lake Road, at a pullout along the highway); Highway 139 1627 Comment
  UC465863  Phoradendron densum Milo S. Baker 1900-7-6 Lassen s. side Dixey Mts. Comment
  CAS-BOT-BC250985  Phragmites australis John Thomas Howell 1975-7-23 51415 Lassen Long Valley Creek bridge on Hwy. 395 southeast of Constantia Comment
  HSC1474  Pinus contorta R. A. Magie 1964-5-1 61 Lassen 15 mi. W of Susanville on Hwy. 44 1524 Comment
  UCR67404  Pinus jeffreyi George K. Helmkamp 1990-10-4 M 13 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  SEINET10859539  Pinus lambertiana Paulson 1970-7-21 PAULSON s.n. Lassen 28N 6 E-19 Comment
  UCR201593  Plagiobothrys Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  POM204143  Plagiobothrys bracteatus J. T. Howell 1934-7-10 12540 Lassen Patterson Flats Comment
  CHSC84879  Plagiobothrys cognatus Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 355 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
  CHSC110891  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC99538  Plagiobothrys cusickii Lowell Ahart; John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC224968  Plagiobothrys hispidulus J. Burtt Davy 1897-6-17 3360 Lassen Adobe Meadows, Honey Lake Valley Comment
  CHSC29970  Plagiobothrys hispidulus R. A. Schlising 1979-6-7 3452 Lassen S end of Eagle Lake, at Papoose Creek and Meadow in Lassen National Forest. In streambed. 1584 Comment
  JEPS109638  Plagiobothrys hispidulus Dean W. Taylor 2002-6-21 18173 Lassen Highway 139 ca. 10 miles N of Susanville, ca. 1 mile south of the southerly end of Willow Creek Valley 1524 Comment
  CAS-BOT-BC224971  Plagiobothrys hispidulus Gary Schoolcraft 1983-8-24 1146 Lassen Big Dry Lake S of Walsh Mountain 1615 Comment
  CHSC66721  Plagiobothrys mollis var. mollis Vernon H. Oswald; Lowell Ahart 1996-8-1 8112 Lassen Mountain Meadows Reservoir SW of Westwood. On the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  SEINET10873743  Plagiobothrys tenellus Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 875 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  POM73080  Plagiobothrys torreyi Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  SEINET6170697  Platanthera dilatata var. leucostachys C. G. Gulling 1905-1 Lassen Comment
  JEPS64411  Platanthera leucostachys Brown and Wieslander 1922-7-17 21 Lassen Martin Sprs. Eagle Lake Comment
  POM253046  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen About a mile east of Westwood 1524 Comment
  UC890150  Plectritis brachystemon C. L. Hitchcock 6604 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  CHSC7742  Plectritis macrocera Beverly J. Wise 1969-4-10 118 Lassen 2.8 mi. north of Susanville on Shasta Forest logging Rd #7-off Hwy 139. 1341 Comment
  CHSC99738  Plectritis macrocera Lowell Ahart; John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  RSA484154  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
  CAS-BOT-BC255673  Poa bolanderi John Thomas Howell; Gordon H. True 1973-8-1 50233 Lassen E slope of Diamond Range S of Susanville 2133 Comment
  HSC68801  Poa bolanderi Gary Schoolcraft 1980-8-13 349 Lassen N side of Diamond Mtn. 1951 Comment
  CAS-BOT-BC254942  Poa bulbosa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49187 Lassen Elysian Valley NW of Janesville 1325 Comment
  JEPS118450  Poa bulbosa Lowell Ahart, John Dittes 2011-6-20 17495 Lassen About 40 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UCD57075  Poa bulbosa Beecher Crampton 1964-6-26 7078 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  RSA719872  Poa compressa M. A. Vincent, K. Levings 2006-7-29 12903 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  UCR119183  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Warner Mountains, 6 miles southeast of Jess Valley, 3 miles east of Blue Lake. Southern edge of mountains. 2134 Comment
  UC1024881  Poa cusickii subsp. cusickii Leo Whitney 1935-5-26 3141 Lassen 10 mi e Adin (Ash Creek) Comment
  SEINET10524396  Poa fendleriana Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 883 Lassen Collected 3 mi N of Milford, Calif. on Hwy 395 at Honey Lake campgrounds. Comment
  CAS-BOT-BC246864  Poa nervosa John Thomas Howell 1934-6-14 12170 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UC589886  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadow; Susanville Quadrangle 1524 Comment
  CAS-BOT-BC247321  Poa pratensis John Thomas Howell; Gordon H. True 1973-8-1 50183 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  HSC10766  Poa pratensis M. T. Milligan 1964-7-16 131 Lassen 2 mi. W on Silver Lake Rd., along Upper Susan River 1829 Comment
  SEINET7850259  Poa pratensis B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11508 Lassen Blue Door Flat, 7 or 8 mi. E of Highway 295, on county road 510. 1774 Comment
  JEPS114849  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2008-6-22 15020 Lassen On the road sides of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  UC1024829  Poa pratensis subsp. pratensis Leo Whitney 1935-6-12 3231 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UCR244104  Poa pratensis subsp. pratensis Jim Andre, G. L. Clifton 1993-6-9 19698 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  CAS-BOT-BC255021  Poa secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49521 Lassen Elysian Valley, W of Janesville 1325 Comment
  POM264256  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 mi west of Chester, Rte.36 Comment
  RSA300158  Poa secunda J. T. Howell, Gordon H. True, Margaret J. Williams 1973-5-12 s.n. Lassen Elysian Valley northwest of Janesville 1326 Comment
  SD34480  Poa secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester, mountain meadow 1524 Comment
  SEINET10522723  Poa secunda Jeffrey Huber 1971-6-2 Huber 106 Lassen 4 mi S of Adin along CA Hwy 139 in basalt-clay; valley floor in Artemesia. 1341 Comment
  CAS-BOT-BC247052  Poa secunda subsp. juncifolia Ralph K. Gierisch 1968-7-11 3352 Lassen Lassen National Forest, Harvey Valley - Dixie Spr. 1706 Comment
  UC1024690  Poa secunda subsp. juncifolia Leo Whitney 1933-7-15 2155 Lassen ca 16 mi w of upper end Eagle Lake (Harvey Mt); Lassen Nat'l Forest 1981 Comment
  UC1024869  Poa secunda subsp. juncifolia Leo Whitney 1935-5-26 3157 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1024949  Poa secunda subsp. juncifolia Leo Whitney 1935-6-27 3317 Lassen ca 13 mi w of n end Eagle Lake; Squaw Valley Comment
  UC1132872  Poa secunda subsp. juncifolia A. Simontacchi 1940-5-13 704 Lassen 2.2 mi n of B. M. 6680 on Cone Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UCD92157  Poa secunda subsp. juncifolia A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3370 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  UCD92377  Poa secunda subsp. juncifolia B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD92385  Poa secunda subsp. juncifolia William Martin 1963-7-18 s.n. Lassen 3-4 miles S of Doyle. Long Valley Creek, Rowland Ranch. Comment
  UCD92432  Poa secunda subsp. juncifolia L. Whitney 1935-6-23 3289 Lassen Lassen National Forest. Near Fruit Grower's Supply Co., Camp 10. Comment
  JEPS107471  Poa secunda subsp. secunda Lowell Ahart, John Dittes 2005-6-1 11845 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1024933  Poa secunda subsp. secunda Leo Whitney 1935-6-28 3344 Lassen Bieber Comment
  UC1132877  Poa secunda subsp. secunda K. E. Bradshaw 1939-5-27 236 Lassen Black Mt Experimental Forest, center of Plot 39-1 Black Mt Experimental Forest; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC70959  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley 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
  UC1483864  Polemonium micranthum M. Meyer 1980-5-1 Lassen e Horse Lake Road (s of Ravendale); , e of Horse Lake Road 1645 Comment
  CDA40272  Polemonium micranthum Lee Wheeler 1960-4-13 3941 Lassen At the fairgrounds, Susanville. 0 Comment
  SEINET8729406 Image available Polemonium micranthum Unknown 1986-1 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill, T36N, R16E, S35, 5600 ft. 1707 Comment
  CHSC532  Polyctenium fremontii 1944-6-30 Lassen Grasshopper Valley. 1624 Comment
  CDA20360  Polyctenium fremontii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; No other data provided. 0 Comment
  SEINET5326411  Polyctenium williamsiae G. Schoolcraft 1998-5-19 2707 Lassen S. end Mud Flat. 1341 Comment
  GMDRC7733  Polygala subspinosa J. M. Andre, G. Clifton 1993-6-1 33410 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  UCR32584  Polygala subspinosa var. subspinosa T. L. Wendt, E. J. Lott 1975-6-12 1031 Lassen 4.5 mi east of Rte. 395 on Smoke Creek Ranch Rd, east of Mud Flat 1372 Comment
  UC1101132  Polygonum amphibium var. stipulaceum Verne Grant and Irving Schneider 1947-9-5 8369 Lassen by Sam Webb's Place (Spaulding) (nw shore of lake); Eagle Lake Comment
  CHSC112447  Polygonum aviculare subsp. depressum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18735 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS50508  Polygonum bistortoides Brown and Wieslander 1922-7-18 55 Lassen Martin Sprs. Eagle Lake Comment
  UC1562677  Polygonum davisiae Barbara Ertter 1988-7-25 7863 Lassen ridge ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville); Diamond Mts. 2286 Comment
  CDA22783  Polygonum davisiae C. Siebe 1971-6-19 Lassen Near cattle corrals at southwest end of Westwood. 0 Comment
  CAS-BOT-BC414488  Polygonum douglasii W. R. Dudley 1893-6-23 s.n. Lassen Castle Lake Trail, near Mt. Shasta Comment
  UC1136177  Polygonum douglasii subsp. douglasii E. Sawyer 1935-6-27 215 Lassen Long Valley Sierraville Quadrangle Comment
  JEPS117589  Polygonum douglasii subsp. spergulariiforme 2010-7-31 16979 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
  JEPS46148  Polygonum douglasii subsp. spergulariiforme Duncan Dunning 1921-8-11 Lassen 3 mi s Antelope Mountain (sw of Eagle Lake); Martin Spring Comment
  UC1553395  Polygonum douglasii subsp. spergulariiforme G. Schoolcraft 1988-6-15 1814 Lassen 16 mi e Adin; Ash Valley RNA/AEC 1584 Comment
  UC773926  Polygonum douglasii subsp. spergulariiforme L. R. Short 1936-9-30 S- 501 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1767 Comment
  UC850047  Polygonum douglasii subsp. spergulariiforme M. S. Baker and F. Nutting 1894-1 Lassen Lassen Co. 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
  UC1603214  Polygonum polygaloides J. Guardino 1993-6-9 281 A Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CHSC112396  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18732 Lassen Drainage filled with dirt form construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA339992  Polygonum polygaloides subsp. confertiflorum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9466 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  CAS-BOT-BC419910  Polygonum polygaloides subsp. kelloggii George W. Gillett 1957-7-28 939 Lassen Lassen Volcanic National Park. Widow Lake. 2072 Comment
  JEPS51287  Polygonum polygaloides subsp. kelloggii Brown and Wieslander 1922-7-30 48 Lassen Martin Sprs. Eagle Lake Comment
  JEPS97417  Polygonum ramosissimum Vernon H. Oswald and L. Ahart 1995-6-19 6880 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
  UCD100647  Polygonum ramosissimum Verne Grant; Irving Schneider 1947-8-1 8227 Lassen Southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1136922  Polygonum sawatchense subsp. sawatchense George A. Fischer and Irwin H. Johnson 1938-7-14 F 248 Lassen Lassen National Forest 1767 Comment
  RSA161483  Polygonum shastense Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  HSC97193  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen E side of Hwy. 36, 1/4 mi. SW of the Susan River, 8 air mi. SW of Susanville 1434 Comment
  SBBG128041  Polygonum spergulariiforme L. Ahart, J. Dittes 2010-7-31 16979 Lassen ca. 100 yards NE of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  JEPS70696  Polypogon monspeliensis W. L. Jepson 1918-8-2 7771 Lassen Beckwith Pass 1463 Comment
  UC1100378  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1478 Lassen 1 mi n Doyle (Honey Lake Valley, marshy banks of Long Creek); Honey Lake Valley, banks of Long Creek Comment
  UC1132901  Polypogon monspeliensis H. S. Yates 1936-8-11 6054 Lassen near Red Rock; Sierraville Quad., near Red Rock Comment
  UC1112248  Porterella carnosula R. C. Bacigalupi with S. Galen Smith 1957-6-28 6023 Lassen Highway 395 in Madeline Plains 3.1 mi s Madeline; Madeline Plains 1615 Comment
  UC1483818  Porterella carnosula G. Schoolcraft 1980-7-16 318 Lassen Nelson Corral Reservoir 1804 Comment
  UC195849  Porterella carnosula Franklin P. Nutting Lassen flat near Eagle Lake; near Eagle Lake Comment
  HSC63956  Porterella carnosula Teresa Prendusi 1980-7-1 Lassen Champs Flat, ca. 8 mi. W of N end of Eagle Lake. 1677 Comment
  OBI75891  Porterella carnosula Anthony Baniaga and D. Lepley, D. Lepley 2011-8-17 502 Lassen Lassen Natl Forest. Unnamed ephemeral pool, E of Silver Bowl Camp. Bogard Buttes quad. T31N R7E sec 35 SW of SE 1905 Comment
  CHSC4838  Potamogeton 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
  JEPS97315  Potamogeton amplifolius Vernon H. Oswald 1995-8-26 7218 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  UCD150403  Potamogeton crispus William Anderson 1963-7-9 s.n. Lassen Honey Lake Refuge. Comment
  CAS-BOT-BC452150  Potamogeton diversifolius R. F. Thorne; Larry E. DeBuhr 1975-8-22 47201 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC66284  Potamogeton gramineus Vernon H. Oswald; Lowell Ahart 1996-6-24 7876 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  CAS-BOT-BC453913  Potamogeton pectinatus Arnold Tiehm; Gary Schoolcraft 1984-8-14 9246 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line 1698 Comment
  RSA233761  Potamogeton richardsonii Robert F. Thorne, C. W. Tilforth 1969-9-5 39140 Lassen Said Valley Reservoir. Comment
  UCR228123  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  UC1536817  Potamogeton striatus Gordon H. True Jr. 1939-7-6 1006 Lassen Honey Lake Valley, Hartson Lake Comment
  JEPS97316  Potamogeton zosteriformis Vernon H. Oswald 1995-8-26 7220 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  POM312882  Potentilla biennis Verne Grant 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  UC1136905  Potentilla gracilis George A. Fischer and Irwin H. Johnson 1933-7-12 F 208 Lassen Grass Valley Lassen National Forest, Grass Valley 1700 Comment
  CHSC89733  Potentilla gracilis var. fastigiata L. P. Janeway 2004-6-26 8159 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  JEPS114356  Potentilla gracilis var. fastigiata Lowell Ahart, John Dittes 2008-6-20 14954 Lassen In meadow, about 200 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-BC540363  Potentilla gracilis var. fastigiata John Thomas Howell 1934-7-7 12461 Lassen Bogard Ranger Station Comment
  CAS-BOT-BC540367  Potentilla gracilis var. fastigiata David D. Keck 1930-7-23 956 b Lassen 3 miles east of Westwood 1524 Comment
  CHSC113015  Potentilla gracilis var. flabelliformis Lowell Ahart; John Dittes 2013-7-23 18899 Lassen Along a small drainage, west of the road levee, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121267  Potentilla gracilis var. flabelliformis Lowell Ahart, John Dittes 2013-7-23 18899 Lassen Along a small drainage, W of the road levee, about 100 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCR67033  Potentilla rivalis George K. Helmkamp 1990-10-4 M- 3 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  UC1523752  Prunella vulgaris Gary Schoolcraft 1981-6-25 482 Lassen East Fork of Willard Creek 1584 Comment
  CHSC27652  Prunella vulgaris var. lanceolata Jerry Snodgrass 1978-7-11 55 Lassen Papoose Creek, SE corner of Eagle Lake. 1572 Comment
  JEPS62498  Prunella vulgaris var. lanceolata Brown and Wieslander 1922-7-30 23 Lassen Martin Sprs Eagle Lake; , Martin Sprs Comment
  CAS-BOT-BC159777  Prunus andersonii R. F. Thorne; C. W. Tilforth 1969-9-6 39252 Lassen Beckwourth Pass, Plumas-Lassen Co. line county 1589 Comment
  CHSC1581  Prunus andersonii D. Heinz 1962-4-23 Lassen Hallelujah Jct. at State line. 1371 Comment
  HSC101096  Prunus andersonii C. Dow, D. Garrison 2008-5-3 Lassen OHV Trailhead and Trail to Indian Springs 1439 Comment
  HSC18803  Prunus andersonii Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  RSA0037144  Prunus andersonii B. Villegas 2011-3-26 s.n. Lassen Hallelujah Junction. NE corner of HWY 395 & HWY 70 intersection. Comment
  UCD35732  Prunus emarginata Beecher Crampton 1960-6-18 5725 Lassen southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC154614  Prunus subcordata John Thomas Howell 1974-7-8 50496 Lassen Susanville 1295 Comment
  UCR17286  Prunus virginiana Frank C. Vasek 1975-7-11 750711- 38 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC154774  Prunus virginiana var. demissa Louella Bass 1973-5-25 38 Lassen Elysian Valley 1325 Comment
  CHSC23560  Prunus virginiana var. demissa W. O. Baum 1971-7-6 34 Lassen At top of s slope on Gallatin Peak. 2103 Comment
  UC1128444  Prunus virginiana var. demissa G. T. Nordstrom 1936-7-8 902 Lassen 2 mi se of Dog Valley (Tahoe National Forest); Tahoe National Forest 1798 Comment
  RSA59556  Prunus virginiana var. melanocarpa E. K. Balls 1950-5-22 14827 Lassen 1.8 miles SE of Buntingville. W of Honey Lake, Hwy 395. 1280 Comment
  UCD91513  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51997 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  UC718009  Pseudoroegneria spicata subsp. spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi w of Susanville (overlooking Susan River Canyon); Sierra Nevada 1341 Comment
  CHSC29919  Pseudostellaria jamesiana Robin Ondricek 1978-6-27 73 Lassen On Coleman Lake Rd., 1977 burn area. 1950 Comment
  RSA0011562  Psilocarphus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46990 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC361753  Psilocarphus brevissimus var. brevissimus John Thomas Howell 1934-7-10 12541 Lassen Patterson Flats Comment
  CHSC29852  Psilocarphus brevissimus var. brevissimus Robin L. Ondricek 1978-6-8 48 Lassen Lower Dry Lake at lake's edge. 1645 Comment
  JEPS119651  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2012-7-9 18290 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS30616  Psilocarphus brevissimus var. brevissimus Peter H. Raven with Otto T. Solbrig 1958-6-17 13284 Lassen along United States Highway 395 1.9 me s Ravendale Comment
  JEPS97412  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald and L. Ahart 1995-6-19 6897 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  JEPS124656 Image available Psilocarphus brevissimus var. brevissimus Laurel Loeblich 1964-7-1 66 Lassen Collected 17.6 mi. north of Susanville on highway 139 in ditch on west side of road about 2 meters from road. Comment
  CHSC60879  Psilocarphus oregonus Vernon H. Oswald; Lowell Ahart 1993-7-8 5672 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  JEPS102794  Psoralidium lanceolatum Vernon H. Oswald 2001-6-2 10040 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  JEPS109942  Psoralidium lanceolatum Dean W. Taylor 2004-5-11 19063 Lassen Calneva Lake; southern end of the lakebed. 1219 Comment
  CHSC105259  Pterospora andromedea Lowell Ahart; John Dittes 2010-7-31 17007 Lassen On the sout side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC115612  Puccinellia distans Lowell Ahart; John Dittes 2015-7-14 20330 Lassen West side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  HSC63951  Puccinellia distans Teresa Prendusi 1980-7-9 1114 Lassen Horse Camp Spring about 39 mi. N of Susanville. 1707 Comment
  UCD91531  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area. 1981 Comment
  CHSC99494  Puccinellia lemmonii Lowell Ahart; John Dittes 2008-6-20 14967 Lassen Saline area, about 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0042600  Puccinellia lemmonii Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. 1008 Comment
  JEPS103184  Puccinellia nuttalliana G. Schoolcraft 2000-6-12 2908 Lassen Cold Spring Reservoir at NE end of Madeline Plains 1645 Comment
  CHSC12464  Purshia tridentata Robert W. Severin 1969-6-20 6 Lassen 1 mile sse of E.L.B.S. 2/3 mile along road up to Five Points. 1630 Comment
  NY848524  Purshia tridentata D. B. Dunn 1971-6-2 17784 Lassen 6 miles north of Hallelujah junction on U.S. Hwy 395 1402 Comment
  SJSU14478  Purshia tridentata W. D. Pitts 1970-5-29 301 Lassen by Hwy 395, 5 mi N of Doyle Comment
  CAS-BOT-BC147818  Purshia tridentata var. tridentata Clarence Quick 1963-7-12 63 -31 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CAS-BOT-BC147820  Purshia tridentata var. tridentata R. F. Thorne; C. W. Tilforth 1969-9-6 39253 Lassen C. 14 miles SE of Milford along Long Valley Creek 1310 Comment
  CAS-BOT-BC147824  Purshia tridentata var. tridentata M. S. Taylor 1982-5-7 4431 Lassen Reno Junction on Hwy 70, just e of Beckwourth Pass 1524 Comment
  HSC19581  Purshia tridentata var. tridentata L. H. Myers 1963-4-5 29 Lassen W of Hwy. 395 near Janesville 1280 Comment
  RSA0084312  Pyrola dentata Diana D. Jolles, Erik M. Beaston 2011-7-5 441 Lassen Lassen National Forest near area where Susan River flows through Clover Valley. Thinning unit near intersection of A-21 road and Silver Lake Road some miles south of Highway 44. 1784 Comment
  CAS-BOT-BC462755  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  UC1523749  Pyrola picta Gary Schoolcraft 1981-7-7 497 Lassen n of Landon Lookout 1981 Comment
  OBI75873  Pyrola picta Anthony Baniaga 2011-8-10 496 Lassen Lassen Natl Forest. About 1/4 mi SE of Swain Mdw, S of Robbers Ck. Swain Mtn quad T29N R8E sec 35 NE of SW 1721 Comment
  HSC81545  Pyrrocoma carthamoides var. cusickii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6049 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC362263  Pyrrocoma carthamoides var. cusickii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50695 Lassen Steep rocky slope south and southeast of Diamond Mt. 2286 Comment
  UCR163275  Pyrrocoma hirta Jim Andre 1993-6-29 1408 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  JEPS100333  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17838 Lassen meadow 0.5 air mi S of Doyle Grade, along private road in rural residential area Feather River Watershed 1859 Comment
  JEPS100334  Pyrrocoma lucida Dean W. Taylor 2001-7-19 17839 Lassen meadow along jeep road southward from Doyle Grade and 1 air mile South therefrom, just E of Plumas County line, Plumas National Forest 2042 Comment
  UC1583970  Pyrrocoma racemosa var. paniculata G. Schoolcraft 1990-9-13 2129 Lassen upper end of Stoney creek Stoney Creek 1463 Comment
  JEPS37795  Quercus kelloggii W. L. Jepson 1939-8-11 19371 Lassen Milford 1280 Comment
  POM106363  Quercus kelloggii Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCD46633  Quercus kelloggii John Thomas Howell; Gordon H. True 1973-5-12 49159 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CAS-BOT-BC104477  Quercus vacciniifolia C. Hart Merriam 1925-8-22 s.n. Lassen Summit, between Butte Creek Meadows and Lake Almanor 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
  UC1126215  Ranunculus alismifolius var. alismifolius A. Simontacchi 1940-5-13 705 Lassen 6.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  HSC27356  Ranunculus alismifolius var. lemmonii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19192 Lassen Harvey Valley near Cone Springs Comment
  CHSC8742  Ranunculus aquatilis var. capillaceus S. Chulasmai 1966-5-13 34 Lassen Vernal pool, (Johnstonville). Comment
  JEPS88527  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1996-6-24 7877 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  SEINET10899319  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1982-6-12 Taylor 4648 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
  CHSC4982  Ranunculus cymbalaria R. Clicquennoi 1967-6-24 53 Lassen In meadow, 4 mi e of Eagle Lake Biological Station at Murrer's Upper Meadow. 1524 Comment
  NY494380  Ranunculus cymbalaria M. A. Nobs 1949-8-20 1484 Lassen Marshy banks of Long Creek, 1 mile north of Doyle, Honey Lake Valley Comment
  CHSC1479  Ranunculus cymbalaria var. saximontanus 1944-6-21 Lassen Eagle Lake shore. 1524 Comment
  UC1745660  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake; ; Sam Webb place near end of Eagle Lake. 1554 Comment
  UC1191440  Ranunculus flammula Verne Grant and Irving Schneider 1947-8-24 8267 Lassen Blue Lake; nw shore, n Lassen Co. Comment
  CHSC58511  Ranunculus flammula var. ovalis Vernon H. Oswald 1992-7-3 5053 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. Along a drainage on the upper strand of the lake. 1851 Comment
  CHSC61175  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald; Lowell Ahart 1993-5-12 5383 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, along Pine Creek. 1737 Comment
  UC1608992  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald and Lowell Ahart 1993-5-12 5383 Lassen Forest Rd 32N08 (to Crater Lake) 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, along creek); Pine Creek 1737 Comment
  UC1776661  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-3-1 2463 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  CHSC115591  Ranunculus macounii Lowell Ahart; John Dittes 2015-7-14 20328 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UC1126216  Ranunculus occidentalis A. Simontacchi 1940-6-13 850 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC91186  Ranunculus occidentalis var. occidentalis Lowell Ahart; John Dittes 2005-6-1 11857 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
  NY494769  Ranunculus occidentalis var. ultramontanus W. W. Eggleston 1911-5-29 6759 Lassen Vicinity of Doyle Station 1290 Comment
  CDA24358  Ranunculus testiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 C Lassen Wendel. 0 Comment
  CHSC63415  Ranunculus testiculatus Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6316 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. At a watering trough. 1871 Comment
  CHSC52793  Ranunculus uncinatus Cindy Prouty 1978-7-5 1 Lassen E shore of Mahogany L., S of Eagle L. Found in meadow. 2060 Comment
  CDA7608  Ratibida columnaris N. Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles north of the Eagle Lake Resort on service road #33N01. 0 Comment
  UC1523733  Rhamnus rubra Gary Schoolcraft 1981-7-21 544 Lassen ne of Pittville (along Hwy 299) 1249 Comment
  JEPS127178  Rhaponticum repens Lowell Ahart, John Dittes 2016-7-15 21229 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  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
  UC79702  Ribes aureum Walter E. Bryant Lassen 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
  UC465786  Ribes cereum Franklin P. Nutting 1894-7-5 Lassen Dixie Valley Comment
  UCR17281  Ribes cereum Frank C. Vasek 1975-7-11 750711- 30 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC60742  Ribes cereum var. cereum Vernon H. Oswald; Lowell Ahart 1993-6-3 5487 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), 7.0 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, just S of the ford over Pine Creek, between Poison Lake and Susanville. 1688 Comment
  CHSC12424  Ribes velutinum Anne Linda Brisk 1969-6-19 1 Lassen 1/4 mi NE of ELBS. 1554 Comment
  OBI75884  Ribes velutinum Anthony Baniaga 2011-7-1 414 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  UC585163  Ribes velutinum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1738 Lassen gully on mountain above Red Rock 1420 Comment
  UCR17289  Ribes velutinum Frank C. Vasek 1975-7-11 750711- 19 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  JEPS117586  Rigiopappus leptocladus Lowell Ahart, John Dittes 2010-7-31 16980 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1951063  Rigiopappus leptocladus Debra Valov 2007-5-22 2007077 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  JEPS53868  Rorippa curvisiliqua Brown and Wieslander 1922-7-30 24 Lassen Martin Springs Eagle Lake, Martin Springs Comment
  CHSC110910  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2012-7-9 18292 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC112392  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18725 Lassen Drainage filled with dirt form construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC30577  Rorippa nasturtium-aquaticum Sori H. Shad 1970-6-24 42 Lassen In upper Murrer's Meadow, in irrigation ditch. 1524 Comment
  CHSC36472  Rorippa nasturtium-aquaticum Jeffrey R. Peek 1982-6-4 33 Lassen Ca. 50 yds along Willow Creek from its beginning in Murrers Upper Meadow. Comment
  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
  CHSC5239  Rorippa nasturtium-aquaticum P. Balch 1955-7-10 Lassen Eagle Lake. Willow Creek Reservoir. 1463 Comment
  SEINET10973519  Rorippa obtusa Mary Susan Taylor 1974-1 Taylor 278 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1191531  Rorippa sinuata Verne Grant and Irving Schneider 1947-8-1 8226 Lassen irrigation ditch running s.w. into State Fish & Game nesting area on s.w. end of Section 19 Madeline Plain Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  JEPS107934  Rosa woodsii subsp. ultramontana Lowell Ahart, John Dittes 2005-6-2 11944 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, about 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  CDA26287  Rosa woodsii var. ultramontana Gordon Leppig, T. LaBlanca 1998-7-13 874 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  JEPS47284  Rosa woodsii var. ultramontana W. L. Jepson 1939-8-11 19372 Lassen Milford 1280 Comment
  UC773922  Rosa woodsii var. ultramontana L. R. Short and Wm. Gansberg 1936-7-9 S- 484 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  CHSC6261  Rubus leucodermis P. Balch 1955-7-20 Lassen Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville. 1615 Comment
  JEPS28684  Rubus leucodermis George W. Gillett 1957-7-26 914 Lassen e shore Butte Lake Lassen Volcanic National Park, Butte Lake 1844 Comment
  CAS-BOT-BC147172  Rubus parviflorus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49479 Lassen Elysian Valley, west of Janesville 1325 Comment
  POM91623  Rubus parviflorus var. bifarius Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CAS-BOT-BC110481  Rumex B. C. Cain 1925-8-24 85 Lassen 1 mile below Drakesbad, Mount Lassen National Park. 1645 Comment
  CAS-BOT-BC421955  Rumex acetosella Margaret Williams; Steven Williams 1974-7-26 74 -L-23 Lassen Near Hellelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS121297  Rumex crispus Lowell Ahart 2013-7-22 18865 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC109329  Rumex paucifolius G. Schoolcraft 1987-4-29 1689 Lassen Ash Valley RNA. 1554 Comment
  JEPS120880  Rumex salicifolius Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18774 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC6962  Rumex salicifolius var. salicifolius M. S. Baker and F. Nutting 1894-7-1 Lassen Dixie Mts. Comment
  RSA0105590  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC434263  Rumex triangulivalvis Annie M. Alexander; Louise Kellogg 1946-8-11 5153 Lassen Northwest end Grasshopper Valley. Comment
  HSC29859  Rumex venosus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19300 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC445671  Sagittaria cuneata L. S. Smith 1918-7-22 1009 Lassen Modoc National Forest. Blue Lake 1874 Comment
  UC803885  Sagittaria cuneata G. L. Stebbins Jr. 1949-8-6 4004 Lassen edge Feather Lake (betw. Susanville and McArthur); edge of Feather Lake 1676 Comment
  JEPS124721 Image available Sagittaria cuneata Joe Ammirati 1964-7-1 76 Lassen Ca. 1 mi. W. of Beber on H. W. 299- near bridge. Comment
  CAS-BOT-BC132713  Salix A. T. Whittemore 1979-4-21 79 -040 Lassen South shore of Eagle Lake Comment
  POM362636  Salix bonplandiana Christopher Davidson 1975-6-6 2725 Lassen Ca 3.5 miles on road to Thompson Peak. Branching E of rd 204 ca 7.5 miles SW of Susanville. (Rd 204 follows Gold Run Cr.) 1677 Comment
  CAS-BOT-BC108055  Salix exigua John Thomas Howell 1975-7-23 51403 Lassen Wet ground along Hwy. 395 between Johnstonville and Jonesville - Sierra Nevada 1280 Comment
  JEPS88245  Salix exigua Vernon H. Oswald and Lowell Ahart 1996-6-17 7784 Lassen n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (ditch along trail, trail accessed at Devils Corral Trailhead off of hwy, w of Susanville); Modoc Plateau 1432 Comment
  SEINET10932103  Salix lasiandra Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 889 Lassen Collected 3 mi n of milford on hwy 395 at honey lake campgrounds. 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
  POM209469  Salix lemmonii Carleton R. Ball 1932-7-24 687 Lassen Mt. Lassen Highway. 0.6 mile N of Sulphur Works Checking Station. Lassen Volcanic National Park. 1982 Comment
  POM209470  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 685 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  UC1609475  Salix lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-3 5489 Lassen n. of Hwy. 44 between Poison Lake and Susanville (Bridge Creek Spring Rd. (Lassen 112, Forest 31N06) at Bridge Creek, s. edge of rd.) 1746 Comment
  SEINET11987291  Salix lutea J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4121 Lassen Willow Creek Campground on road between adin and Said Valley Reservoir Comment
  POM107066  Salix melanopsis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  NY540086  Salsola tragus G. Schoolcraft 1982-9-20 917 Lassen West of Wendell 1219.2 Comment
  UC104453  Salvia aethiopis T. Brandegee 1892-6-30 Lassen streets of Susanville Comment
  UCD125448  Salvia aethiopis J. M. Tucker 1950-7-26 1979 Lassen outskirts of Susanville, on east side of town. Comment
  CDA19717  Salvia dorrii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CAS-BOT-BC214313  Salvia dorrii var. pilosa Ella Dales Cantelow 1941-5-22 3656 Lassen 2 1/2 mi. n. of Secret Valley C.C.C. Camp, Hy. 395, Quincy to Alturas Comment
  SEINET8018246  Salvia dorrii var. pilosa J. A. Young 1982-6-7 s.n. Lassen NE Lassen County, Redlands. 1676 Comment
  SEINET12319555  Sambucus caerulea Unknown 1978-1 27 Lassen SE end of Eagle L., base of basalt boulders from Black Mnt., T32N,R11E, sec.22 1609 Comment
  JEPS5934  Sambucus racemosa var. microbotrys Frances D. Payne 1929-7-12 80 Lassen Lost Lake Warner Mountains (se extremity of mts.) 2286 Comment
  JEPS85836  Sambucus racemosa var. microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 air mi s of Susanville); Diamond Mts. 2255 Comment
  JEPS117483  Sanguisorba annua Lowell Ahart, John Dittes 2010-7-31 17003 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
  POM90118  Sanguisorba annua Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  JEPS947  Sanicula tuberosa G. S. Crew, C. S. Robinson 6/1/1927-7/1/1927 12 Lassen near Westwood Junction (Lassen National Forest, Norval Flat, sw Lassen County); Lassen National Forest, Norval Flat 2051 Comment
  CHSC115590  Saponaria officinalis Lowell Ahart; John Dittes 2015-7-14 20323 Lassen About 100 yards west of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  UCD54536  Sarcobatus vermiculatus Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2721 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  UCR67389  Sarcobatus vermiculatus George K. Helmkamp 1990-9-23 D- 5 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  SEINET10532870  Sarcobatus vermiculatus Mary Susan Taylor 1974-7-8 Taylor 261 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  CHSC4601  Sarcodes sanguinea R. Ogren 1967-7-8 1 Lassen Papoose Valley, 2 mi S of Gallatin Beach, Eagle Lake. 1524 Comment
  UC1121106  Sarcodes sanguinea A. Simontacchi 1940-6-17 883 Lassen 1.4 miles S of Patterson Mtn. 1821 Comment
  HSC17991  Sarcodes sanguinea M. T. Milligan 1964-7-17 146 Lassen 3.5 mi. W of Eagle Lake Rd. on Marrill Flat Rd. 1677 Comment
  JEPS96023  Saxifraga oregana Vernon H. Oswald and Lowell Ahart 1996-6-24 7889 Lassen 0.5 mi e of Eagle Lake Road ((A1) and 2.5 mi s of Eagle Lake, Papoose Meadows, Modoc Plateau, Montane Meadow); Papoose Meadows, Modoc Plateau, Montane Meadow 1633 Comment
  CAS-BOT-BC111301  Schoenoplectus acutus var. occidentalis Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-20 1487 Lassen Long Creek, 1 mile south of Doyle Comment
  CHSC114035  Schoenoplectus acutus var. occidentalis Richard R. Halse 2012-8-20 8661 Lassen Along State Hwy. 139 at Eagle Lake, ca. 26.6 miles north of Susanville. 1558 Comment
  SEINET10333128  Schoenoplectus acutus var. occidentalis R. R. Halse 2012-8-20 8661 Lassen Along State Hwy. 139 at Eagle Lake, ca. 26.6 miles north of Susanville 1558 Comment
  RSA122665B  Schoenoplectus pungens H. S. Yates 1936-8-11 6062 Lassen Near Red Rock. 1341 Comment
  JEPS63798  Scirpus acutus var. occidentalis W. L. Jepson 1918-8-2 7786 Lassen 1 mi below Boni Ranch house (on lower bench of Long Valley Creek, Long Valley); Long Valley, Long Valley Creek below Boni Ranch house 1371 Comment
  HSC95197  Scirpus microcarpus Gordon Leppig 1998-7-12 943 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1100879  Scirpus nevadensis Malcolm A. Nobs, S. Galen Smith 1949-7-22 1073 Lassen ne side Eagle Lake; ne side Eagle Lake Comment
  JEPS88199  Scribneria bolanderi Vernon H. Oswald and Lowell Ahart 1996-6-17 7804 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, n. side of trail between Devils Corral Trailhead and the 6.0 mi. post); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  RSA0003996  Scutellaria holmgreniorum Noel Holmgren, Pat Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km. from U.S. Hwy. 395 via Rye Patch Can. Comment
  CAS-BOT-BC240084  Secale cereale Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16342 Lassen 13.5 mi. E. of Susanville Comment
  CDA28589  Secale cereale D. Haskelle 2000-2-7 s.n. Lassen Doyle. 0 Comment
  RSA647520  Secale cereale Marion P. Harthill 1972-6-16 788 Lassen Doyle 1372 Comment
  UCD92548  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 miles south of Ravendale, lower slopes Observation Peak. Comment
  UCD92555  Secale cereale D. Haskelle 2000-2-7 s.n. Lassen Doyle. Comment
  UC831836  Senecio hydrophiloides A. A. Heller 1938-6-23 15192 Lassen about 3 mi s Westwood Comment
  UCD135528  Senecio hydrophiloides Raymond D. Ratliff 1966-6-28 8 Lassen Lassen National Forest, Gooch Valley - Plot 70. 1828 Comment
  HSC95277  Senecio hydrophilus Gordon Leppig 1998-8-17 1057 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1594646  Senecio hydrophilus Vernon H. Oswald and Lowell Ahart 1992-7-16 5128 Lassen Feather Lake on s side Bridge Creek Spring Rd. ((County Rd. 112, Forest Rd. 31N06), ca 0.4 mi e of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02) between Old Station and Susanville); Feather Lake 1749 Comment
  RSA0012449  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen east of Westwood, the margin bordered with sagebrush, where a tongue of Upper Sonoran protrudes into the Transition Life Zone. Comment
  UCD135547  Senecio integerrimus Grady L. Webster 1989-5-13 7723 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  SEINET10534709  Senecio integerrimus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3111 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  OBI76982  Senecio integerrimus var. exaltatus Anthony Baniaga 2011-6-20 384 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  JEPS100319  Senecio spartioides Dean W. Taylor 2001-7-12 17830 Lassen Diamond Mountains, headwaters of Rhodes Creek, along Forest Road 24N02X 1996 Comment
  UC1924263  Sidalcea glaucescens Debra Valov 2004-5-31 2004225 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD107434  Sidalcea glaucescens Tim Kuhn 2006-1 15 Lassen Eagle Lake Ranger District. Comment
  SBBG128040  Sidalcea glaucescens L. Ahart, J. Dittes 2010-7-31 17016 Lassen S side of the rd, ca. 50 yards E of the large culvert, where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1516 Comment
  CAS-BOT-BC205778  Sidalcea oregana H. D. Ripley; R. C. Barneby 1943-6-18 5766 Lassen Smoke Creek, N.E. of Viewland 1341 Comment
  CAS-BOT-BC205781  Sidalcea oregana Elmer I. Applegate 1929-6-24 5877 Lassen Big Valley, just southwest of Bieber, northwest Lassen County Comment
  UCD116829  Sidalcea oregana P. B. Kennedy 1927-6-13 s.n. Lassen Fall River, by intake above dtich. Comment
  JEPS67272  Sidalcea oregana subsp. spicata Brown and Wieslander 1922-7-18 65 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  UC1137745  Sidalcea oregana subsp. spicata George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1737 Comment
  POM84786  Sidalcea oregana subsp. spicata Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  RSA703717  Sidalcea oregana var. maxima Arnold Tiehm, Jan Nachlinger, Margaret J. Williams 1988-6-2 11704 Lassen East side of Snowstorm Mt., 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas 1402 Comment
  SEINET8961229  Sidalcea oregana var. oregana A. Tiehm, J. Nachlinger 1988-1 11704 Lassen E side of Snowshoe Mountain, 18.1 road miles N of the Wendel road on Hwy 395 from Susanville to Alturas, W side of the highway. 1402 Comment
  CHSC57275  Silene bernardina Mary Meyer 1980-7-22 Lassen Downhill 100 yds west from sharp bend in road on top going to Lookout Tower. 2316 Comment
  RSA438833  Silene bernardina Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  UC1483814  Silene bernardina G. Schoolcraft 1979-6-7 129 Lassen northern Skidaddle Mountains 2011 Comment
  JEPS50913  Silene douglasii Brown and Wieslander 1922-7-23 33 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  CAS-BOT-BC389264  Silene lemmonii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  OBI75896  Silene menziesii Anthony Baniaga 2011-8-17 507 Lassen Lassen Natl Forset. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E SW of SW 1896 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
  CHSC116070  Sisymbrium altissimum Lowell Ahart; John Dittes 2015-7-13 20316 -A Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  RSA716268  Sisymbrium altissimum L. Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction. 1460 Comment
  RSA0045631  Sisymbrium orientale Lowell A. Ahart, John Dittes 2008-6-20 14900 Lassen About 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS107807  Sisyrinchium bellum Lowell Ahart, John Dittes 2005-6-2 11948 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
  UC1542947  Sisyrinchium idahoense var. idahoense G. Schoolcraft 1987-6-23 1749 Lassen along Ash Valley Rd. Ash Valley 1554 Comment
  UC3888  Smilacina stellata J. Burtt Davy Jun 17 1897-Jun 24 1897 3387 Lassen Adobe Meadows Honey Lake Valley, Byer's Ranch Comment
  RSA0086585  Solanum xanti Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  CAS-BOT-BC365367  Solidago elongata L. S. Smith 1918-8-11 1022 Lassen Modoc National Forest. Camp One Comment
  CAS-BOT-BC364907  Solidago velutina subsp. californica Louella Bass 1973-9-4 EV 134 Lassen Elysian Valley 1325 Comment
  JEPS97325  Solidago velutina subsp. californica Vernon H. Oswald 1995-8-21 7207 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  SBBG3122  Sorbus sitchensis H. and M. Dearing 1939-6-12 3644 Lassen S of Lassen Comment
  UC1537628  Sparganium eurycarpum var. eurycarpum Gordon H. True Jr. 1939-7-6 1024 Lassen Honey Lake Valley; George Bailey Ranch Comment
  CHSC66424  Sparganium natans Vernon H. Oswald 1996-6-15 7766 Lassen Modoc Plateau. Papoose Meadows located ca. 2 mi S of Gallatin Beach at Eagle Lake, NW of Susanville. In Papoose Creek where it leaves the meadow. 1633 Comment
  UC2042785  Sphaeromeria cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7192 Lassen Skeedaddle Mountains on NE side of Honey Lake, on S side of Hot Springs. Comment
  SEINET10737171  Spiraea douglasii Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 840 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
  CHSC5277  Stachys ajugoides var. rigida P. Balch 1955-7-17 Lassen Papoose Creek, near Gallatin's. Eagle Lake. 1615 Comment
  UC773921  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spring Experiment Range Lassen Forest 1795 Comment
  GMDRC6448  Stanleya viridiflora J. M. Andre, Glenn Clifton 1993-6-14 30001 Lassen northeast base of Shaffer Mtn near Secret Creek, about 20 miles ENE of Susanville 1646 Comment
  UC1951078  Stellaria borealis subsp. sitchana Debra Valov 2009-4-24 2009013 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET11933235  Stellaria longipes J. D. Prouty 1978-1 29 Lassen S of Eagle L., along Papoose Creek, ca 1 mi from Gallatin Rd., T31N, R11E, Sec. 17 1591 Comment
  JEPS51139  Stellaria longipes var. longipes Brown and Wieslander 1922-7-18 52 Lassen Martin Springs; Eagle Lake Comment
  HSC69069  Stephanomeria exigua Gary Schoolcraft 1979-7-3 107 Lassen Along roadside 3 mi. up from Horne Ranch 1641 Comment
  SEINET11262513  Stephanomeria lactucina Robert L. Johnson, Mikel R. Stevens 2015-7-10 3939 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  CAS-BOT-BC205201  Stephanomeria pauciflora James R. Shevock; Barbara Ertter 1986-7-20 11738 Lassen Northern Sierra Nevada. Along U.S. highway 395 at Red Rock Road 1500 Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  UCR244171  Stipa comata Jim Andre, G. L. Clifton 1993-6-3 19701 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  HSC22318  Stipa nelsonii subsp. dorei D. E. Anderson 1969-7-5 4992 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  SEINET10523036  Stipa occidentalis Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3114 Lassen 6 mi N of Hallelujah Jct on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  SEINET10523038  Stipa occidentalis Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 885 Lassen Collected 3 mi N of Milford, on Hwy 395 at Honey Lake campgrounds. Comment
  SEINET10448891  Streptanthus cordatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 514 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along ridge and in sandy wash. 1402 Comment
  CHSC64784  Suaeda moquinii Vernon H. Oswald 1995-6-7 6835 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) near milepost 10.5, 4.9 mi e of Wendel, ne of Susanville. Flat near the railroad. 1231 Comment
  UC7234  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3397 Lassen Amedee Honey Lake Valley Comment
  UC7240  Suaeda moquinii J. Burtt Davy Jun 17 1897-Jun 24 1897 3325 Lassen Honey Lake Valley 1828 Comment
  CHSC68748  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8488 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
  JEPS47014  Swertia albicaulis var. albicaulis Jos. Grinnell Lassen Eagle Lake 1584 Comment
  RSA18164  Symphoricarpos acutus C. B. Wolf 1929-9-1 3781 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  JEPS126467  Symphoricarpos albus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-11 CA 350 -057 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  CAS-BOT-BC269699  Symphoricarpos mollis G. Schoolcraft 1997-6-24 2604 Lassen Doyle Grade W of Doyle 1706 Comment
  CHSC23553  Symphoricarpos rotundifolius var. rotundifolius W. O. Baum 1971-7-5 21 Lassen N slope of Gallatin Peak. 2011 Comment
  CDA42242  Symphoricarpos rotundifolius var. rotundifolius Gordon Leppig, T. LaBanca 1998-7-13 964 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  UC1136760  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spr. Exp. Range 1792 Comment
  UC762731  Symphyotrichum ascendens R. F. Hoover 1940-10-1 4654 Lassen Janesville Comment
  CHSC118847  Symphyotrichum bracteolatum L. P. Janeway 2015-8-10 11830 Lassen Warner Mountains. Steep west-facing slope above the 64 Road (39N01 - the road to Patterson Campground), 0.2 km north-northeast of crossing of East Creek; between Peterson Meadow and Long Valley. 2047 Comment
  RSA518560  Symphyotrichum foliaceum var. foliaceum George K. Helmkamp 1990-9-23 G- 12 Lassen N of Ravendale 1677 Comment
  CAS-BOT-BC98930  Symphyotrichum foliaceum var. parryi B. C. Cain 1925-8-24 111 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CAS-BOT-BC98933  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1917 Lassen Battle Creek Meadows - Lassen Butte Region Comment
  CAS-BOT-BC97916  Symphyotrichum frondosum Leo Whitney 1934-9-6 3070 Lassen South shore of Eagle Lake, Lassen National Forest 1584 C