Search Results — 2000 specimen records retrieved (1588 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA465  Abies concolor Mark Lubinski 2000-10-12 PDR# 1103214 Lassen 5 mi. W of Susanville by Hwy. 44. Comment
  SD132529  Abies concolor F. C. Vasek 1976-9-3 760903 3 Lassen 5 miles west of Susanville, north of State Highway #44 at a point Ao mile north of junction with State Highway #36 Comment
  UCD133116  Abies concolor Beecher Crampton 1960-6-18 5711 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  SEINET11305032  Abies concolor var. lowiana D. Charlet 1996-7-8 2287 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1622 Comment
  POM85381  Acer glabrum var. torreyi Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain, Susanville, Perkins Ranch 1829 Comment
  CAS-BOT-BC331637  Acer macrophyllum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49449 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC334175  Acer negundo var. californicum J. T. Howell 1975-7-23 s.n. Lassen Susanville, in park 1295 Comment
  CHSC27595  Achillea millefolium Jeff D. Prouty 1978-7-10 27 Lassen W shore of Coleman Lake, S of Eagle Lake L. 1956 Comment
  CAS-BOT-BC260400  Achnatherum hymenoides Margaret Williams; Steven Williams 1974-7-26 74 -L-1 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  RSA716057  Achnatherum hymenoides L. Ahart, John Dittes 2005-6-2 11996 Lassen Long Valley, about 41/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1428 Comment
  CAS-BOT-BC210661  Achnatherum lemmonii John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50644 Lassen South and southeast of Diamond Mt. 2286 Comment
  UCD18958  Achnatherum lemmonii Jack N. Reppert 1965-7-13 18 Lassen Lassen National Forest, Harvey Valley Allotment-Logan Springs. 1706 Comment
  UCD50546  Achnatherum lemmonii A. H. Shunk 1923-1 11 Lassen Bogard Ranger Sta., Lassen County, California. 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
  UCD18962  Achnatherum occidentale Jack N. Reppert 1965-7-12 14 Lassen Lassen National Forest, Harvey Valley Allotment (HV 81-76). 1737 Comment
  CHSC68888  Achnatherum occidentale subsp. californicum Vernon Oswald; Lowell Ahart 1997-6-24 8600 Lassen South of Susanville on the north side of Diamond Mtn. On forest Rd. 29N43, 1.2 miles east of Gold Run Rd. 1685 Comment
  RSA582082  Achnatherum occidentale subsp. occidentale J. T. Howell 1934-7-6 12431 Lassen Hall's Flat. Comment
  UC1024687  Achnatherum occidentale subsp. pubescens Leo Whitney 1933-7-15 2158 Lassen ca. 16 mi w of upper end of Eagle Lake (Harvey Mountain); Lassen National Forest Comment
  UC1137654  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 218 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest 1722 Comment
  UC1143048  Achnatherum occidentale subsp. pubescens L. R. Short and J. Warren 1936-6-29 S- 462 Lassen Burgess Spring Experimental Range Lassen National Forest 1820 Comment
  UCD18961  Achnatherum occidentale subsp. pubescens Raymond D. Ratliff 1965-7-12 15 Lassen Lassen National Forest, Harvey Valley Allotment and Champ's Flat Allotment (HV 81-76 and CF 81-9). 1737 Comment
  JEPS102671  Achnatherum speciosum V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10034 Lassen NE of Doyle (Fort Sage Mountains, trailhead to top of mountain from the end of a 4WD road) 1798 Comment
  CAS-BOT-BC218007  Achnatherum thurberianum J. A. Jenkins 1937-7-15 2355 Lassen SW slope Big Valley Mountain along highway from McArthur to Bieber 1127 Comment
  CHSC87112  Achnatherum thurberianum L. P. Janeway 2001-6-20 7205 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
  SEINET235272 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  SEINET235273 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  UC1024812  Achnatherum thurberianum Leo Whitney 1935-6-19 3267 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1031349  Achnatherum thurberianum Leo Whitney 1935-6-18 3267 Lassen 13 mi w Eagle Lake; Lassen National Forest, Ashurst Mountain 1584 Comment
  UC1031354  Achnatherum thurberianum Leo Whitney 1935-6-19 3258 Lassen 13 mi w of upper end Eagle Lake; Lassen National Forest, Ashurst Mt. 1584 Comment
  UC1153869  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen mountain flat 4.5 mi w on State Hwy. 36 Susanville 1432 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UC1037345  Achnatherum webberi Leo Whitney 1935-7-3 3587 Lassen Ashurst Mt. Comment
  UCD32671  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  CHSC117295  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2016-7-13 21119 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber , 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC27639  Acmispon americanus var. americanus George Deniso 1978-7-16 77 Lassen Streamside along Hwy 36, several mi E of Fredonyer Pass. Comment
  SEINET10407851 Image available Acmispon americanus var. americanus F. Farris 1935-8-15 Lassen Susanville 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
  CAS-BOT-BC391608  Actaea rubra Louella Bass 1973-6-17 119 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC391609  Actaea rubra John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49411 Lassen Elysian Valley, west of Janesville 1325 Comment
  SEINET4339237  Aegilops triuncialis G. Schoolcraft 1997-6-26 2603 Lassen 1.2 mile north of Susanville, west of Highway 395 1326 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
  CHSC65107  Agastache parvifolia Vernon H. Oswald 1995-7-24 7132 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  UC882898  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen 39 mi n Susanville; Grasshopper Valley 1524 Comment
  UC29344  Agoseris X dasycarpa M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Dixey Valley Comment
  CHSC7649  Agoseris aurantiaca Beverly J. Wise 1969-5-18 10 Lassen Alongside Susan River. 1615 Comment
  CHSC91811  Agoseris glauca G. Douglas Barbe 1974-8-20 1922 Lassen Upper Lond Valley. Hallelujah Junction, northwest corner of jct. of US Hwy 395 and Hwy 70. 1524 Comment
  SEINET10925084  Agoseris glauca Paul Gallian, David B. Dunn 1971-6-2 Gallian 510 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC101022  Agoseris glauca var. laciniata John Dittes 2008-5-22 1539 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace on northeast side of Willow Creek. 483 Comment
  JEPS118267  Agoseris heterophylla Lowell Ahart, John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UCD107495  Agoseris monticola Tim Kuhn 2006-7-18 41 Lassen Eagle Lake Ranger District.. Comment
  CHSC23552  Agoseris retrorsa W. O. Baum 1971-6-28 19 Lassen S slope of Gallatin Peak. 2042 Comment
  SEINET3915755  Agropyron cristatum Paul Gallian, David B. Dunn 1971-6-2 484 Lassen 5 mi. S of Milford near Honey Lake on U.S. Hwy. 395.; 0 1250 Comment
  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
  SEINET13680160  Agropyron desertorum P. Gallian, David B. Dunn 1971-6-2 484 Lassen 5 mi. S of Milford near Honey Lake on U.S. Hwy. 395.; 0 1250 Comment
  SEINET10551977  Agropyron elongatum John Thomas Howell 1975-7-23 Howell 51409 Lassen Along Hwy 395 between Johnstonville and Janesville. Densely cespitose. 1280 Comment
  UCR119164  Agropyron saxicola Beecher Crampton 1954-7-5 2062 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  UC1130648  Agrostis alba H. S. Yates 1936-8-11 6069 Lassen Baxter Creek Susanville Quadrangle Comment
  UCD39949  Agrostis exarata A. H. Murphy 1953-6-24 HG 48 Lassen Lassen County?: Hog Lake, James pasture. 762 Comment
  CAS-BOT-BC139678  Agrostis gigantea John Thomas Howell 1975-7-23 51401 Lassen Sierra Nevada. Susanville. 1295 Comment
  CAS-BOT-BC139679  Agrostis gigantea John Thomas Howell 1976-7-19 51975 Lassen Sierra Nevada. On Gold Run Creek southwest of Susanville. 1386 Comment
  SEINET7594038 Image available Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen Lassen Volcanic National Park; Snag Lake. Margin of gravel bars 110 yards above lake near south shore. 1850 Comment
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest 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
  CHSC77261  Agrostis variabilis G. Schoolcraft 1997-8-6 2662 Lassen Dimond Mtn. 2316 Comment
  UC188820  Agrostis variabilis Milo S. Baker July 1894 Lassen Comment
  UC53478  Agrostis variabilis M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  CAS-BOT-BC267061  Alisma John Thomas Howell 1974-7-10 50546 Lassen Elysian Valley 1325 Comment
  POM119135  Alisma triviale Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS124714 Image available Alisma triviale P. Matteson 1968-7-9 86 Lassen 1.6 mi N of intersection of HWY 139 and Horse Lake Rd. Comment
  CHSC29882  Allium acuminatum Robin L. Ondricek 1978-6-6 36 Lassen One me S of Colley Point Overlook on Hwy 139. 1670 Comment
  CHSC64855  Allium acuminatum Vernon H. Oswald 1995-6-26 6926 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 8.5 mi w of Madeline, ca. 1 mi e of the reservoir at Fleming Sheep Camp. 1670 Comment
  UCR45852  Allium acuminatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6026 Lassen Ash Valley, along branch road off Adin-Madeline Road just south of bridge over Ash Creek, & c. 16 mi. SE of Adin; 2.5 mi. SE of junction with main road 1555 Comment
  SEINET194965  Allium acuminatum A. A. Heller 1938-1 Lassen 0 Comment
  CAS-BOT-BC461096  Allium anceps B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6553 Lassen Just S of Ravendale 1580 Comment
  CHSC71106  Allium anceps Vernon H. Oswald; Lowell Ahart 1998-5-22 9102 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  CAS-BOT-BC464482  Allium campanulatum A. H. Kramer 1937-1-1 s.n. Lassen Lassen National Park, near Prospect Pk. Comment
  SEINET8122319  Allium lemmonii G. Schoolcraft 1993-1 2287 Lassen Clark Valley Road, ca 9.5 miles E of Madaline. 1829 Comment
  UC1924588  Allium lemmonii Debra Valov 2006-5-29 2006018 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1271 Comment
  UCD138558  Allium lemmonii A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3366 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  HSC84126  Allium lemmonii Dale McNeal 1983-6-6 2846 Lassen Beside Hwy. 395, 4.5 mi. S of Modoc County line Comment
  SEINET10532723  Allium lemmonii David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17786 Lassen 6 miles n of hallelujah jct. On u.s. Hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge & in sandy wash 1402 Comment
  CAS-BOT-BC474048  Allium parvum Ethel S. Willits 1940-4-28 199 Lassen South of Surprise Valley, Modoc County 1371 Comment
  CAS-BOT-BC474049  Allium parvum G. Schoolcraft 1998-4-27 2704 Lassen N. end of Ft. Sage Mtn 1859 Comment
  HSC84123  Allium platycaule Dale McNeal 1983-6-6 2844 Lassen Wash below Horse Lake Rd., 5.3 mi. NE of the junction of Hwy. 139 Comment
  JEPS126533  Allophyllum divaricatum Lowell Ahart, John Dittes 2016-6-7 21011 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC91199  Alnus incana subsp. tenuifolia Lowell Ahart; John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  JEPS107805  Alnus incana subsp. tenuifolia Lowell Ahart, John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  NY526213  Alnus incana subsp. tenuifolia G. Schoolcraft 1982-8-18 887 Lassen Along Doyle Grade Road, west of Doyle 1554.5 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
  IRVC26622  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen Route 36, 10 mi west of Chester Comment
  UC576312  Alopecurus aequalis H. S. Yates 1936-8-12 6082 Lassen McKenzie Meadow Susanville Quad., McKenzie Meadow 1524 Comment
  CAS-BOT-BC138162  Alopecurus aequalis var. aequalis John Thomas Howell 1975-7-23 51388 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC110894  Alopecurus carolinianus Lowell Ahart; John Dittes 2012-7-9 18289 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
  CHSC112469  Alopecurus carolinianus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18731 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
  UC1130818  Alopecurus geniculatus A. Simontacchi 1940-6-15 876 Lassen 6.4 mi. w.-n.w. Cone Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UCD55895  Alopecurus geniculatus A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3371 Lassen 9.5 miles E of Bieber, Big Valley. Comment
  CAS-BOT-BC137990  Alopecurus pratensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49219 Lassen Sierra Nevada. Elysian Valley northwest of Janseville. 1325 Comment
  CHSC91330  Alopecurus pratensis Lowell Ahart; John Dittes 2005-6-1 11868 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  SEINET3871758  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles E of Sierra Valley.; 0 1584 Comment
  CAS-BOT-BC42863  Ambrosia acanthicarpa R. E. Frenkel 1964-10-1 916 Lassen On California Hwy. 36, 1 mile east of California Hwy 44, west of Susanville 1493 Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  SEINET10931749  Amelanchier gracilis Jeffrey Huber 1971-6-11 Huber 331 Lassen 1 mile w of westwood, on cal hwy 36, scattered pinus ponderosa, pseudotsuga Menziesii, arctostaphylos, and ceanothus, all volcanic soils, rather flat and Arid Comment
  CHSC25302  Amelanchier pallida Pauleen Broyles 1977-5-30 147 Lassen Spencer Spring ca 8 km nne of Herlong. Canyon below spring. 1620 Comment
  RSA166673  Amelanchier pallida Alfred Richardson 1961-5-30 8 Lassen S of Eagle Lake. 1402 Comment
  SEINET3872064  Amphiscirpus nevadensis Richard R. Halse 2010-8-25 8087 Lassen Along State Hwy. 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake.; 0 1559 Comment
  CAS-BOT-BC222253  Amsinckia John Thomas Howell 1934-6-16 12219 Lassen Big Valley, 4 miles ne. of Bieber Comment
  HSC97154  Amsinckia menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen N side of Scott Rd., E of the railroad underpass, Long Valley, about 4.75 mi. N of the intersection of Scott Rd. and Hwy. 70, 6.2 mi. NW of Hallelujah Jct. 1460 Comment
  JEPS88217  Ancistrocarphus filagineus Vernon H. Oswald and Lowell Ahart 1996-6-17 7797 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off of Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  CHSC71068  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9134 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  CAS-BOT-BC63953  Antennaria argentea Clare B. Hardham 1969-8-28 17453 C. Lassen West of Janesville Comment
  SEINET2035368  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1370 Comment
  CAS-BOT-BC26644  Antennaria argentea subsp. aberrans Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC68729  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1997-5-27 8505 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  JEPS107971  Antennaria dimorpha Lowell Ahart, John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  JEPS94489  Antennaria dimorpha Vernon H. Oswald and Lowell Ahart 1997-5-27 8505 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat, betw road and creek paralleling rd to north); Forest Route 38N04 1560 Comment
  UC1137751  Antennaria dimorpha L. R. Short 1936-6-8 S- 386 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1743 Comment
  UC585078  Antennaria dimorpha E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1755 Lassen nw-facing slope of ridge e of Redrock 1600 Comment
  CAS-BOT-BC69141  Antennaria geyeri Clare B. Hardham 1969-8-28 17453 D Lassen West of Janesville Comment
  CHSC105248  Antennaria geyeri Lowell Ahart; John Dittes 2010-7-31 16974 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
  CHSC68841  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1997-7-24 8591 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  CAS-BOT-BC69142  Antennaria geyeri Christopher Davidson 1974-7-24 2487 Lassen jCa. 4 mi W of Janesville on rd to Antelope Valley 2133 Comment
  CAS-BOT-BC58693  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen East of Westwood Comment
  JEPS19756  Antennaria luzuloides Rimo Bacigalupi with S. Galen Smith 1957-6-28 5996 Lassen 3.6 mi n of Madeline 1645 Comment
  RSA702449  Antennaria luzuloides L. P. Janeway 2004-6-26 8167 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  CHSC60811  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1993-6-28 5589 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1719 Comment
  UC1951067  Antennaria luzuloides subsp. aberrans Debra Valov 2009-4-25 2009048 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CAS-BOT-BC77283  Antennaria microphylla Clare B. Hardham 1969-8-28 17453 B Lassen West of Janesville Comment
  POM75751  Apocynum pumilum var. rhomboideum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CHSC30563  Aquilegia formosa Sori H. Shad 1970-6-26 3 Lassen Found in Murrer, S upper Meadow in a silty soil. 1584 Comment
  CHSC67063  Aquilegia formosa Willis Ball 1969-6-25 37 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  CAS-BOT-BC392213  Aquilegia formosa Lassen 1927 G. S. Crew 1927-7-15 79 Lassen Lassen National Forest. Bogard R.S. 1725 Comment
  SEINET10866232  Arabis Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2601 Lassen Hallelujah jct intersection of u.s. 395 And state hwy 70; in open waste area adjacent to artemisia tridentata comm. 1433 Comment
  SEINET10480742  Arabis drummondii Jeffrey Huber 1971-6-2 Huber 125 Lassen Ca 30 mi n of susanville, on state hwy 139, in basatl. Pinus-artemesia-juniper Association. 1646 Comment
  RSA0129096  Arabis oligantha Franklin P. Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  NY119620  Arabis sparsiflora var. subvillosa R. C. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake Comment
  SEINET1912095  Arceuthobium abietinum R. L. Mathiasen 2010-1 1062 Lassen 3.8 km N of jct. of Routes 89 and 36 on Rte. 89. Ca. 3 km S of S entrance to Lassen Nat. Park 1900 Comment
  SEINET2471272  Arceuthobium abietinum R. L. Mathiasen 2008-9-15 2008 -27 Lassen 12.8 km S. of jct. of Westwood Road on State Route 44 1720 Comment
  CHSC91321  Arceuthobium campylopodum Lowell Ahart; John Dittes 2005-6-1 11894 Lassen On the west side of Scott Road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.9 miles (air) northwest of Hallelujah Junction. 1465 Comment
  SD64322  Arctium minus Darley F. Howe 1966-8-24 Lassen 32 miles northeast of Litchfield on Hwy #395. 1399 Comment
  CAS-BOT-BC45893  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45908  Arctostaphylos nevadensis M. S. Baker; Frank Nutting 1894-1-1 s.n Lassen Lassen Country Comment
  HSC67173  Arctostaphylos patula J. P. Smith, J. O. Sawyer 1972-5-6 5238 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  UC1137649  Arctostaphylos patula A. Simontacchi 1940-5-13 703 Lassen 4.1 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD53307  Arctostaphylos patula Beecher Crampton 1964-1-26 7080 Lassen Ca. 35 miles NW of Susanville. 2042 Comment
  CAS-BOT-BC43783  Arctostaphylos stanfordiana T. S. Brandegee 1886-1-1 30 Lassen Barrow pit along county road S. of Mapes Ranch, Henry Lake Valley Comment
  CHSC36979  Arenaria aculeata M. S. Taylor; B. Hammond 1982-8-27 5056 A Lassen On ridge between Crystal and Adams Peaks, Diamond Mts, ca. 4 air mi sw of Constantia. 2225 Comment
  RSA702604  Arenaria congesta L. P. Janeway 2004-6-26 8141 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UCR18731  Arenaria congesta Frank C. Vasek 1975-7-11 750711- 07 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  JEPS46143  Arenaria congesta var. congesta Duncan Dunning 1921-8-19 Lassen 3 m s Antelope Mountain (south and west of Eagle Lake. East tributary of Pine Creek.); Martin Spring, Pine Creek Comment
  RSA38460  Arenaria congesta var. simulans P. A. Munz 1947-5-19 11876 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  UC1562793  Arenaria congesta var. subcongesta Barbara Ertter with Gary Schoolcraft 1987-6-16 7193 Lassen ne side Honey lake (saddle on E side of Hot Springs Peak.); Skeedaddle Mountains Comment
  UC1924211  Arenaria congesta var. subcongesta Debra Valov 2004-6-9 2004272 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC8098  Arenaria congesta var. subcongesta M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC1249269  Arenaria congesta var. subcongesta Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8463 Lassen 50 m se Susanville Comment
  JEPS94556  Arenaria kingii var. glabrescens Vernon Oswald and Lowell Ahart 1997-6-24 8633 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  JEPS124520 Image available Argemone munita Virginia Hardham 1965-7-12 115 Lassen 1.9 mi. north of Milford on HW 395 Comment
  CHSC30585  Argemone munita subsp. argentea P. V. Caldwell 1972-6-24 253 Lassen Sandy beach area between the tunnel and E.L.B.S., off the roadside. Comment
  CAS-BOT-BC401791  Argemone munita subsp. rotundata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16352 Lassen 4.5 mi. E. of Susanville Comment
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  UC1191450  Argemone rotundata Verne Grant, Irving Schneider 1947-9-5 8367 Lassen nw shore of Eagle Lake, by Sam Webb's place (Spaulding) Eagle Lake Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  JEPS19757  Arnica chamissonis Rimo Bacigalupi with S. Galen Smith 1957-6-28 6005 Lassen 6.1 mi s of Madeline Comment
  JEPS35877  Arnica chamissonis C. S. Robinson 1927-7-15 77 Lassen Feather Lake, sw Lassen Co Feather Lake 1737 Comment
  UC1136826  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 184 Lassen (Dry Lake) Grass Valley Grass Valley, Thompson Meadow 1694 Comment
  HSC12534  Arnica chamissonis M. S. Baker 28 Jul [year missing] Lassen South of Eagle Lake Comment
  POM203853  Arnica chamissonis subsp. foliosa J. T. Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  RSA0059627  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
  CDA10117  Arnica cordifolia T. C. Fuller 1963-7-15 10896 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  CHSC11767  Arnica cordifolia Wayne O. Baum 1971-6-21 71 -5 Lassen E. slope of Gallatin Peak. 1920 Comment
  RSA32851  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen More or less shaped gravelly slope in the yellow pine forest 1 mile east of Fredonyer Pass, on State Hwy #36 1738 Comment
  UC2027326  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen National Forest. Willard Creek. Fredonyer Pass. Fredonyer Pass quadrangle Comment
  CHSC27166  Arnica dealbata J. D. Prouty 1978-7-27 31 Lassen 2.4 mi w of jct with road A-1 on n side of Merrill Flat Rd, s of Eagle Lake. 1740 Comment
  CHSC27167  Arnica dealbata J. D. Prouty 1978-7-27 30 Lassen 3.9 mi w of jct with road A-1 on n side of Merrill Flat Rd just e of Roney Corral, s of Eagle Lake. 1770 Comment
  SEINET8734516 Image available Arnica foliosa var. incana A. L. Hormay 1941-1 8 Lassen Lassen; Sec. 31, T 33N, R. 9 E, Little Valley 1679 Comment
  CAS-BOT-BC85028  Arnica sororia Clarence Quick 1963-7-12 63 -37 Lassen Black Mountain Experimental Forest east of Halls Flat 1859 Comment
  UC747143  Artemisia arbuscula subsp. arbuscula G. Thomas Robbins 1945-10-18 2156 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  HSC68838  Artemisia cana subsp. bolanderi Gary Schoolcraft 1979-9-27 195 Lassen Painter Flat 1720 Comment
  SEINET6775323 Image available Artemisia cana subsp. bolanderi G. Schoolcraft 1979-10-3 198 Lassen In Dry Valley, just west (0.25 miles) of Dry Valley Gap 1615 Comment
  UC1507398  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 194 Lassen Painter Flat 1722 Comment
  CAS-BOT-BC90331  Artemisia douglasiana John Thomas Howell 1975-7-23 51390 Lassen Susanville 1295 Comment
  CAS-BOT-BC90332  Artemisia douglasiana G. Schoolcraft 1989-9-13 2007 Lassen Along BJ Trail west of Susanville at Hobo Camp Comment
  SBBG95820  Artemisia douglasiana G. K. Helmkamp 1990-9-23 E- 15 Lassen 20 mi N of Litchfield, along US Hwy 395 1432 Comment
  UC29681  Artemisia douglasiana M. S. Baker and Frank Nutting 1894-1 Lassen Bridge Creek Comment
  RSA748314  Artemisia ludoviciana subsp. ludoviciana K. M. Meyer, A. Townesmith 2007-7-19 134 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  JEPS37022  Artemisia nova R. F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  CDA10174  Artemisia spinescens Robin Breckenridge 2007-5-1 PDR# 1349824 E Lassen Wendel. 0 Comment
  CHSC64749  Artemisia spinescens Vernon H. Oswald 1995-5-24 6772 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wen-del). 1219 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
  CHSC13797  Artemisia tridentata Cathy Crittenden 1970-7-8 28 Lassen Approx. 100 yds north of E. L. B. S. 1524 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
  CHSC7180  Artemisia tridentata Lynn R. Thomas 1969-4-17 99 Lassen Ca. 100 yds down hillside W of Rice Canyon Rd. across small creek, 5 mi N of junction with 'back road to Litchfield', 12 mi E of Susanville. 1310 Comment
  CAS-BOT-BC97327  Artemisia tridentata subsp. tridentata R. K. Gierisch; D. H. Esplin 1969-8-27 3599 Lassen Lassen National Forest 1706 Comment
  CHSC66846  Artemisia tridentata subsp. tridentata Vernon H. Oswald 1996-10-3 8294 Lassen Modoc Plateau. Hwy. 395 N of Susanville between Litchfield and Ravendale, 10.4 mi N of Smoke Creek Ranch Rd. 1402 Comment
  POM30964  Artemisia tridentata subsp. tridentata Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA758317  Artemisia tridentata subsp. tridentata Doug Goldman 2004-11-5 2935 Lassen To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake 1256 Comment
  SEINET3360477 Image available Artemisia tridentata subsp. tridentata A. A. Beetle 1957-8-16 12891 Lassen Between Ravendale and Termo. Comment
  CHSC77188  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  UC747155  Artemisia tridentata subsp. vaseyana G. Thomas Robbins 1945-10-7 2155 Lassen 2-3 mi ne Burgess Spring (se slope of Harvey Mt.); Lassen National Forest, Harvey Valley 1676 Comment
  UC1523748  Asclepias cordifolia Gary Schoolcraft 1981-6-9 448 Lassen e McArthur (on n side of Hwy. 299) 1280 Comment
  CHSC51995  Asclepias fascicularis Cindy Prouty 1978-7-3 23 Lassen SE Eagle L.--near Eagle Lake Field Station. 1572 Comment
  UC1096430  Asclepias speciosa George A. Fischer, Irwin H. Johnson 1933-7-29 F- 276 Lassen Stringer Lassen National Forest 1694 Comment
  UC1136827  Asclepias speciosa George A. Fisher, Irwin H. Johnson 1933-7-29 F Lassen Stringer Lassen National Forest 1694 Comment
  RSA401104  Asclepias speciosa George Willet 1935-6-27 s.n. Lassen Susanville Comment
  RSA712642  Aster occidentalis var. occidentalis L. P. Janeway 2005-8-31 8513 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
  CAS-BOT-BC177438  Astragalus andersonii Alice Eastwood; John Thomas Howell 1940-6-16 8351 Lassen Omira Comment
  CAS-BOT-BC177439  Astragalus andersonii Margaret Williams 1974-7-27 74 -L-55 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC116920  Astragalus andersonii J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  NY791370  Astragalus andersonii A. J. Cronquist 1959-6-16 8453 Lassen 25 miles northwest of Reno Comment
  NY791373  Astragalus andersonii G. Schoolcraft 1982-6-22 725 Lassen North end of Ft. Sage Mountains 1585.0 Comment
  NY791376  Astragalus andersonii W. W. Eggleston 1911-5-29 6734 Lassen Vicinity of Doyle Station 1290 Comment
  UC585206  Astragalus andersonii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1754 Lassen nw-facing slope of ridge e Red Rock; ridge e of Red Rock 1615 Comment
  HSC42428  Astragalus anxius Barbara Kelly 1977-8-9 558 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin 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
  RSA59492  Astragalus anxius E. K. Balls 1950-5-19 14784 Lassen 16.5 miles W of Madeline on road from Adin 1677 Comment
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Jan 3 2013
  UC1483838  Astragalus anxius G. Schoolcraft 1980-8-14 307 Lassen w of Madeline; Ash Valley 1548 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
  SEINET8358141  Astragalus anxius Unknown 1991-7-16 6108 Lassen Ash Valley ca 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  CAS-BOT-BC178762  Astragalus canadensis var. brevidens John Thomas Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC178767  Astragalus canadensis var. brevidens Leo Whitney 1934-7-4 2073 Lassen Sand dunes near north shore of Eagle Lake, Lassen N.E. 158 Comment
  NY674058  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1646 Comment
  SEINET5325001  Astragalus curvicarpus M. J. Williams, J. T. Howell 1973-5-12 73 C-16 Lassen Near Herlong turn-off, Hwy. 395. 1250 Comment
  CHSC23432  Astragalus curvicarpus var. curvicarpus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5816 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CAS-BOT-BC182960  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi. s of Constantia 1402 Comment
  CDA26665  Astragalus filipes G. D. Barbe 1982-7-12 3873 Lassen East base of Dry Valley Ridge along Westside Road, 3 miles north of Dry Valley Gap (Thermo-Grasshopper Road), Madeline Plains. Comment
  CHSC37537  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  NY658507  Astragalus filipes G. Schoolcraft 1981-6-15 460 -B Lassen Ash Valley 1554.5 Comment
  UCR18728  Astragalus filipes Frank C. Vasek 1975-7-11 750711- 01 Lassen Modoc Plateau, [Said Valley] State Hwy 139, 3.5 mi north of Grasshopper Valley at junction with Termo Rd. 1650 Comment
  SEINET10903957  Astragalus filipes Williams 1983-7-31 Williams 83 -125-1 Lassen Ash valley road, 17 mi from aden. 1829 Comment
  CAS-BOT-BC229051  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  JEPS118159  Astragalus lentiginosus var. floribundus Dean W. Taylor 2009-5-20 20605 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mi NW of Brown Cabin (USGS map, site) 1478 Comment
  RSA339986  Astragalus lentiginosus var. floribundus Noel Holmgren, Patricia K. Holmgren, A. H. Holmgren 1980-7-5 9520 Lassen upper Smoke Creek drainage, 20.4km (12.7miles) from Hwy 395 via Rye Patch Canyon, 24km (15miles) airline distance SE of Ravendale 1585 Comment
  UC862859  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 60 Comment
  UC13403  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  CAS-BOT-BC187561  Astragalus malacus Mrs. C. C. Bruce 1898-6-1 2214 Lassen Madaline Plains & Modoc Comment
  CHSC71083  Astragalus malacus Vernon H. Oswald; Lowell Ahart 1998-5-22 9104 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  RSA0006819  Astragalus malacus H. D. Ripley, R. C. Barneby 1944-5-30 5974 Lassen South of Ravendale. 1677 Comment
  UC1128861  Astragalus pulsiferae E. Sawyer 1935-6-27 237 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CAS-BOT-BC192840  Astragalus pulsiferae H. D. Ripley; R. C. Barneby 1943-6-17 5799 Lassen East side of Beckwourth Pass, S. Lassen Co. Comment
  CAS-BOT-BC192855  Astragalus pulsiferae var. pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen East slope of Shaffer Mtn. Comment
  SEINET5324195  Astragalus pulsiferae var. pulsiferae A. A. Heller, P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat 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
  HSC82244  Astragalus purshii var. lectulus Thomas W. Nelson, Jane P. Nelson 1980-7-6 5989 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA121821  Astragalus purshii var. purshii L. R. Short, J. Warren 1936-6-11 S- 402 Lassen Burgess Spring, Exp Range. 1790 Comment
  CAS-BOT-BC192972  Astragalus purshii var. tinctus John Thomas Howell 1934-6-10 11862 Lassen Honey Lake Valley 37 miles s. of Susanville Comment
  SBBG67420  Astragalus purshii var. tinctus S. W. Hutchinson -Jun-1925 561 Lassen Eagle Lake 1554 Comment
  SEINET10490025  Astragalus purshii var. tinctus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17789 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridentata pinyon pine Jeffery pine along high ridge and sandy wash. 1402 Comment
  RSA339987  Astragalus whitneyi Noel Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 2195 Comment
  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
  CAS-BOT-BC198724  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 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
  CAS-BOT-BC68710  Athyrium filix-femina var. californicum Clare B. Hardham 1971-8-22 18405 Lassen Diamond Mountain 1981 Comment
  UC769938  Atriplex confertifolia R. F. Hoover 1940-10-5 4663 Lassen Wendel Comment
  CHSC76093  Atriplex heterosperma Lowell Ahart; Vernon Oswald 1999-9-13 8208 Lassen On the west side of the dirt road and 1/2 mile south of the isgn in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1176 Comment
  RSA518558  Atriplex rosea George K. Helmkamp 1990-9-23 H- 7 Lassen N of Ravendale 1677 Comment
  CDA10419  Balsamorhiza hirsuta T. C. Fuller 1963-6-11 10663 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CAS-BOT-BC106487  Balsamorhiza hookeri Betty J. Hammerly 1941-6-21 51 Lassen 8 miles SE of Likely on Blue Lake Road Comment
  CAS-BOT-BC106494  Balsamorhiza hookeri Clarence Quick 1963-7-12 63 -38 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  JEPS109626  Balsamorhiza hookeri Dean W. Taylor 2002-6-21 18178 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 Comment
  CAS-BOT-BC106493  Balsamorhiza hookeri Rhonda Riggins 1989-4-27 1635 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N. Litchfield, 26.6 mi S Ravendale 1310 Comment
  CHSC67422  Balsamorhiza macrolepis var. platylepis James D. Jokerst 1991-5-29 3300 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
  CHSC31967  Balsamorhiza sagittata Wayne O. Baum 1971-6-21 71 -30 Lassen S. slope of Gallatin Peak. 2042 Comment
  UC1137703  Balsamorhiza sagittata A. Simontacchi 1940-6-4 802 Lassen 7.0 mi sw of Jacks Lake (Halls Flat); Halls Flat 1828 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
  CHSC31754  Bassia hyssopifolia E. Wolgemuth 1976-8-28 Lassen State Correctional Facility, 8 mi e of Susanville. Comment
  UC1191423  Bassia hyssopifolia Verne Grant and Irving Schneider 1947-9-6 8390 Lassen near Wendel (irrigation ditch w of Fleming Ranch Headquarters) Comment
  SEINET10479070  Bassia hyssopifolia Mary Susan Taylor 1974-7-8 Taylor 263 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  CAS-BOT-BC145783  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CAS-BOT-BC145784  Beckmannia syzigachne Peter H. Raven; Otto T. Solbrig 1958-6-17 13262 Lassen United States Highway 395, 2.1 miles northeast of Standish. Comment
  CHSC112801  Beckmannia syzigachne Lowell Ahart; John Dittes 2013-7-22 18843 Lassen West margin of a duck field, about 40 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC37443  Beckmannia syzigachne M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixey Valley Comment
  SEINET3100770 Image available Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road miles W of highway 395 on highway 70 then 5.5 road miles N on Scott Road. 1490 Comment
  UC1790750  Berteroa incana Arnold Tiehm 2005-7-14 15023 Lassen Long Valley, Anderson (Saralegui) Ranch, 2.2 road mi W of Hwy 395 on Hwy 70, then 5.5 road mi N on Scott Road 1493 Comment
  UCR182957  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau, Anderson Ranch in southern part of county [c. 5.5 miles north of Hwy 70 on Scott Road] 1479 Comment
Read comments
May 25 2012
  CAS-BOT-BC169399  Betula glandulosa M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  RSA504677  Betula nana Bruce Bartholomew, B. Anderson 1988-7-22 4500 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  CHSC111100  Bidens cernua Lowell Ahart; John Dittes 2012-7-9 18295 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
  UC761894  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near Honey Lake (between Janesville and Standish) Comment
  CAS-BOT-BC128033  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC128034  Blepharipappus scaber John Thomas Howell 1976-7-20 52032 Lassen In dried depression. about 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC128040  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen Sagebrush plains at south end of Secret Valley Comment
  CHSC48131  Blepharipappus scaber Vernon H. Oswald 1986-6-15 2112 Lassen Hwy 36, 15.0 mi E of Plumas-Lassen Co. line, 3.5 mi E of Fredonyer Pass. 1508 Comment
  CHSC5201  Blepharipappus scaber 1944-7-1 Lassen Eagle Lake. 1584 Comment
  JEPS94612  Blepharipappus scaber Vernon H. Oswald and Lowell Ahart 1997-5-27 8484 Lassen e side of Hwy 139 at a small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  POM351056  Blepharipappus scaber J. T. Howell 1934-6-10 11894 Lassen Horse Lake Comment
  SEINET11261380  Blepharipappus scaber Robert L. Johnson, Mikel R. Stevens 2015-7-10 3922 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  SJSU4600  Blepharipappus scaber J. W. Tilden 1958-6-27 1287 Lassen Madeline Comment
  UC577280  Blepharipappus scaber David D. Keck and J. Clausen 1935-6-24 3733 Lassen 2 mi s of Ravendale 1463 Comment
  SEINET7379359 Image available Blepharipappus scaber subsp. scaber J. A. Young 1982-6-9 s.n. Lassen Myers Ranch, Adin 1372 Comment
  CAS-BOT-BC14092  Boechera pauciflora John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50687 Lassen Sierra Nevada. South and southeast of Diamond Mountain. 2286 Comment
  CHSC99134  Boechera puberula Lowell Ahart; John Dittes 2008-6-19 14883 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CHSC117221  Boechera rectissima Lowell Ahart; John Dittes 2016-6-7 20981 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC107324  Boechera retrofracta Lowell Ahart; John Dittes 2011-6-20 17509 Lassen Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin. 1511 Comment
  JEPS84940  Boechera retrofracta Barbara Ertter with Gary Schoolcraft 1987-7-16 7174 Lassen n.e. side Honey Lake (e. of road over saddle on w. side of Skeedaddle Mountains); Skeedaddle Mountains 1645 Comment
  UC1126590  Boechera retrofracta A. Simontacchi 1940-5-13 699 Lassen 7.5 mi wsw Cone Ranch Hdq.; Lassen National Forest, Halls Flat Quad. 1920 Comment
  UC1553390  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 mi west of Madeline, CA. 1584 Comment
  CHSC29913  Boechera sparsiflora Robin L. Ondricek 1978-5-25 27 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 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
  CHSC99127  Boechera sparsiflora Lowell Ahart; John Dittes 2008-6-19 14885 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
  SD8418  Boykinia major Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CHSC60929  Brodiaea coronaria subsp. coronaria Vernon H. Oswald; Lowell Ahart 1993-7-8 5676 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  CHSC36462  Bromus briziformis Jeffrey R. Peek 1982-6-1 21 Lassen Ca. 5 yds n of Ravendale Rd, ca. 3 1/2 mi e of jct. Hwy 139 and Ravendale Rd. Comment
  CAS-BOT-BC149581  Bromus carinatus var. carinatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49457 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1136817  Bromus carinatus var. carinatus George A. Fischer, Irwin H. Johnson 1933-7-12 F 231 Lassen Lassen National Forest, Patterson Flat Patterson Flat; Lassen National Forest, Patterson Flat 1737 Comment
  CHSC23516  Bromus carinatus var. marginatus Wayne O. Baum 1971-7-5 71 -13 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC34410  Bromus carinatus var. marginatus Terrence Finn 1979-6-14 1 Lassen 0.75 mi. sw of Hallelujah Junction. 1524 Comment
  POM264546  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CHSC99519  Bromus japonicus Lowell Ahart; John Dittes 2008-6-19 14875 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UCD32672  Bromus japonicus Beecher Crampton 1954-7-6 2076 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  UCD58869  Bromus japonicus R. Tofsrud 1947-7-1 250 Lassen Between Bieber and Nubieber. Comment
  UC1024701  Bromus racemosus L. Whitney 1934-7-18 2143 Lassen Lassen National Forest 1371 Comment
  UC60732  Bromus secalinus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  UC1131325  Bromus suksdorfii A. Simontacchi 1940-6-8 836 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  CAS-BOT-BC161417  Bromus tectorum John Thomas Howell 1977-6-22 s.n. Lassen Sierra Nevada. About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  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
  UCD59756  Bromus tectorum August L. Hormay 1932-5-20 s.n. Lassen Lassen National Forest. Hat Creek. Comment
  CHSC112410  Callitriche heterophylla Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18750 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS124785 Image available Callitriche palustris M. L. Wheelis 1964-7-1 136 Lassen Loc. bridges between Bieber and New Bieber. Comment
  UC17869  Callitriche verna M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. Comment
  CAS-BOT-BC487806  Calochortus coeruleus T. S. Brandegee 1892-7-2 s.n. Lassen Susanville, Calif Comment
  CHSC4921  Calochortus leichtlinii L. G. Bennett 1967-6-24 24 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  UC3407  Calochortus leichtlinii M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  POM109563  Calochortus leichtlinii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  SEINET3363841 Image available Calochortus leichtlinii Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Perkin's Ranch 1829 Comment
  HSC12524  Calyptridium umbellatum Marcus E. Jones 1897-6-28 Lassen Diamond Mtn., Susanville, Perkin's Ranch 2226 Comment
  SEINET196249  Calyptridium umbellatum F. Farris 1936-6-15 Lassen Eagle Lake Rd 1676 Comment
  UC72577  Calyptridium umbellatum Milo S. Baker 1890-1 Lassen Milford Comment
  CHSC107327  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2011-6-20 17492 Lassen Depression in meadow, 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
  UC1134560  Camassia quamash subsp. breviflora A. Simontacchi 1940-5-17 736 Lassen 5.9 mi s of Patterson Mountain (Lassen National Forest); Lassen National Forest 1706 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
  POM253049  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 miles south of Westwood 1524 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
  SEINET8197883  Camassia quamash var. breviflora J. A. Young 1982-6-9 s.n. Lassen Meyer's Ranch, Adin. 1372 Comment
  CHSC64770  Camelina microcarpa Vernon H. Oswald 1995-5-31 6807 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  NY850970  Camissonia boothii subsp. alyssoides P. A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  NY850976  Camissonia boothii subsp. alyssoides W. W. Eggleston 1911-7-7 7176 Lassen Secret Valley 1330 Comment
  POM39324  Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  RSA0021212  Camissonia claviformis subsp. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale. 1341 Comment
  JEPS107788  Camissonia contorta Lowell Ahart, John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1600 Comment
  JEPS94102  Camissonia contorta Vernon H. Oswald and Lowell Ahart 1998-5-22 9098 .1 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
  CHSC93567  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
  CHSC93689  Camissonia parvula Lowell Ahart; John Dittes 2005-6-1 11852 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  HSC30040  Camissonia subacaulis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19152 Lassen 3 mi. N of Westwood Comment
  NY852052  Camissonia subacaulis G. Schoolcraft 1993-6-10 2288 Lassen North of Clark's Valley Road east of Red Rock Lake 1829 Comment
  RSA74347  Camissonia subacaulis Milo S. Baker 1952-5-23 12418 Lassen Wet Spot, E of Chester, Hwy 36. Comment
  HSC63834  Camissonia tanacetifolia Teresa Prendusi 1980-5-16 Lassen 6 mi. S of Ravendale and 1 mi. W of Hwy. 395 Comment
  CAS-BOT-BC160835  Camissonia tanacetifolia subsp. quadriperforata John Thomas Howell 1934-6-10 11857 Lassen 3 miles n. of Omira Comment
  RSA38463  Camissonia tanacetifolia subsp. tanacetifolia P. A. Munz 1947-5-19 11883 Lassen Madeline 1677 Comment
  CAS-BOT-BC282942  Canadanthus modestus B. Bartholomew; B. Anderson 1988-7-22 4499 Lassen Mosquito Creek ca 2 km SW of Patterson Meadow, S end of the Warner Mountains 2080 Comment
  CHSC99529  Capsella bursa-pastoris Lowell Ahart; John Dittes 2008-6-22 15033 Lassen On the banks of a small natural drainage, about 120 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS107837  Capsella bursa-pastoris Lowell Ahart, John Dittes 2005-6-2 11919 Lassen Near bunkhouse, 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
  UC1924258  Capsella bursa-pastoris Debra Valov 2004-5-31 2004229 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD114153  Capsella bursa-pastoris L. R. Short; J. Warren 1936-6-9 S- 408 Lassen Burgess Spring Experimental Range; around old sheep bed-grounds. 1844 Comment
  CAS-BOT-BC37252  Cardamine breweri Louella Bass 1980-5-22 s.n. Lassen Sierra Nevada. Bagley Springs along Susan River between Devil's Corral and Susanville. Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  UC117814  Cardamine nuttallii var. covilleana Brandegee 1892-7-2 Lassen Susanville Comment
  RSA74138  Cardamine pulcherrima Milo S. Baker 1952-5-23 12430 Lassen Hwy. 36, 1/2 mi West of Fredonyer Pass 1753 Comment
  SEINET515879  Cardaria pubescens Vernon H. Oswald 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi N of Bieber on County road 91 (Bieber-Lookout Rd.). 1259 Comment
  JEPS120879  Carex Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18770 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
  CAS-BOT-BC18285  Carex John Thomas Howell 1975-7-23 51408 Lassen Sierra Nevada. Along Highway 395 between Johnstonville and Janesville. 1280 Comment
  CHSC76790  Carex angustata L. P. Janeway 1999-9-5 6574 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  UC142947  Carex angustata A. L. Hormay 1941-6-18 5 Lassen Little Harvey Valley Lassen National Forest, Little Harvey Valley 1676 Comment
  SEINET13327167  Carex aquatilis var. aquatilis J. Atchley 1993-5-5 1 Lassen Along willow creek. 1219 Comment
  CAS-BOT-BC18106  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen 28 km. (17.5 mi.) northeast of Ravendale. Campground on east shore of Dodge Reservoir. Stream adjacent to the boat ramp. Comment
  CDA33021  Carex athrostachya T. C. Fuller 1980-8-5 20309 Lassen Adjacent to boat ramp, campground on the east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. 0 Comment
  UC1143011  Carex aurea August L. Hormay 1934-5-14 Lassen Gray's Flat Well Lassen National Forest, Gray's Flat Well 1706 Comment
  CHSC110089  Carex davyi Barbara L. Wilson; Peter Zika 2011-8-7 16805 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley. 1740 Comment
  CHSC65136  Carex disperma Vernon H. Oswald; Lowell Ahart 1995-7-24 7145 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. 1905 Comment
  JEPS97368  Carex disperma Vernon H. Oswald and L. Ahart 1995-7-24 7145 Lassen T31N R7E NW1/4 NW1/4 Sec. 24, 6250 ft, High Cascade Range, Red Fir Forest. 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. 1905 Comment
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Sep 24 2010
  CAS-BOT-BC20649  Carex douglasii John Thomas Howell 1974-7-10 50549 Lassen Sierra Nevada. Elysian Valley. 1325 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
  HSC82188  Carex douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6037 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC190403  Carex douglasii M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixey Valley Comment
  CAS-BOT-BC19777  Carex douglasii Clarence Roy Quick 1962-6-17 62 -24 Lassen Swains hole, a man made pond in sagebrush flat south of Blacks Mountain Experimental Station. 1554 Comment
  CHSC111069  Carex douglasii Barbara L. Wilson 2011-8-7 16803 Lassen Where route A21 crosses the railroad tracks north of Westwood; UTM 10, 669989 east, 4469294 north, +/- 23. 1606 Comment
  CAS-BOT-BC75502  Carex echinata var. ormantha Leo Whitney 1934-8-2 1967 Lassen Bridge Creek Camp. 1737 Comment
  JEPS118277  Carex filifolia var. erostrata Lowell Ahart, John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest 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
  JEPS87492  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  JEPS94473  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1997-5-27 8510 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling road on the north); Forest Route 38N04 1560 Comment
  SEINET7558593 Image available Carex filifolia var. erostrata L. P. Janeway 2004-6-26 8162 Lassen High Cascade Range. At Patterson Well in Patterson Flats. Blacks Mountain Experimental Forest. Poison Lake 7.5' quad. 1767 Comment
  UC1133498  Carex filifolia var. erostrata Robert W. Gardner 1939-7-6 G- 30 Lassen Grass Valley Halls Flat Quadrangle Comment
  UC1142952  Carex filifolia var. erostrata A. L. Hormay 1941-6-26 238 Lassen Bogard Ranger Station Lassen National Forest, Pine Creek 1706 Comment
  UCD140321  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Harvey Valley, 6 miles north Bogard Ranger Station, Lassen National Forest. 1676 Comment
  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
  JEPS118164  Carex geyeri Dean W. Taylor 2009-5-20 20601 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mile NW of Brown Cabin [USGS map, site] 1478 Comment
  CHSC61066  Carex lasiocarpa Vernon H. Oswald; Lowell Ahart 1993-8-3 5752 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. In the NW part of the swamp. 1932 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  CHSC76848  Carex lenticularis var. lipocarpa L. P. Janeway; Loren Gehrung 1999-10-9 6594 Lassen High Cascade Range. In southwestern arm of Caribou Lake, 1995 Comment
  CHSC66271  Carex nebrascensis Vernon H. Oswald; 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. 1633 Comment
  SEINET7568738 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7914 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  UC1133502  Carex nebrascensis Robert W. Gardner 1939-6-6 G- 29 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  HSC103614  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8005 Lassen Along north side of Silver Lake 1829 Comment
  HSC103619  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8014 Lassen Along north side of Silver Lake 1829 Comment
  UCD140685  Carex nebrascensis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CHSC85980  Carex pellita L. P. Janeway 2003-7-24 7919 Lassen High Cascade Range. In middle of small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  UC1136943  Carex petasata George A. Fischer, Irwin H. Johnson 1933-7-12 F 235 Lassen Patterson Flat Lassen Forest 1737 Comment
  UC506938  Carex petasata George A. Fischer, Irwin H. Johnson 1933-7-12 Lassen Patterson Flat Lassen National Forest 1737 Comment
  JEPS107834  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  CDA33131  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  CAS-BOT-BC118739  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49471 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC118741  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49469 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC118615  Carex raynoldsii George Wilson Gillett 1957-7-29 948 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  CAS-BOT-BC118029  Carex rossii John Thomas Howell; Gordon H. True 1959-9-23 s.n. Lassen N end of Juniper Lake, Lassen Park. 2057 Comment
  HSC48221  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19176 Lassen Harvey Valley near Cone Springs Comment
  HSC48222  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19175 Lassen Harvey Valley near Cone Springs Comment
  CHSC99507  Carex sheldonii Lowell Ahart; John Dittes 2008-6-22 15045 Lassen High dry bank of a levee, north of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.5 miles (air) northeast of Bieber. 1267 Comment
  CHSC74312  Carex simulata James D. Jokerst 1991-5-28 3297 Lassen Survey for reroute of Hwy. 139 at the N end of Eagle Lake, seep E and adjacent to highway at spring shown on USGS map. Modoc Plateau. 1554 Comment
  SEINET13709202  Carex spectabilis G. Schoolcraft 1997-8-6 2670 Lassen Diamond Mountain, N slope 2317 Comment
  HSC97395  Carex straminiformis L. P. Janeway 2003-7-24 7917 Lassen High Cascade Range, along FS 30N14, 1.1 km from FS 30N21, upper Susan River, 4.7 mi. W of Clover Valley 1932 Comment
  CAS-BOT-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-BC116620  Carex subfusca George Wilson Gillett 1957-7-26 911 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CHSC89751  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. Roadside ditch. 1790 Comment
  SEINET4292053 Image available Carex subfusca Unknown 2004-1 8169 Lassen High Cascade Range, along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. Comment
  CAS-BOT-BC116610  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  CHSC96454  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  UCD123074  Castilleja Grady L. Webster 1989-5-13 7711 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CHSC93566  Castilleja angustifolia Lowell Ahart; John Dittes 2005-6-2 11941 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. 1601 Comment
  JEPS25553  Castilleja angustifolia Wayne Roderick 1961-4-29 Lassen 29.3 mi s Ravendale (just off U.S. Highway 395, close to junction with Smoke Creek Road) 1341 Comment
  CAS-BOT-BC249613  Castilleja applegatei subsp. pinetorum G. Schoolcraft 1987-5-6 1699 Lassen North end of Eagle Lake near Stone Ranch 1554 Comment
  CAS-BOT-BC249614  Castilleja applegatei subsp. pinetorum B. J. Hammerly 1941-6-21 44 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  CAS-BOT-BC249623  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-10 12556 Lassen Black's Mt. Comment
  CAS-BOT-BC249624  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Route 36, Susanville 1371 Comment
  CHSC6267  Castilleja applegatei subsp. pinetorum M. West 1946-6-20 Lassen Meadown above Grasshopper Valley. 1645 Comment
  JEPS118213  Castilleja applegatei subsp. pinetorum Dean W. Taylor 2004-5-14 19068 Lassen Ash Valley, County Road 527 (Forest Road 39N08) ca. 0.5 miles South of crossing of Ash Creek 1539 Comment
  UC1537569  Castilleja applegatei subsp. pinetorum Gordon H. True Jr. 1936-6-27 563 Lassen Hot Springs Mountain 1676 Comment
  RSA428370B  Castilleja arachnoidea Christopher Davidson 1974-7-25 2500 Lassen Lassen Volcanic nat. Park, at Juniper Lake. 2134 Comment
  JEPS127584  Castilleja chromosa B. Castro with L. P. Janeway 2015-6-5 2094 Lassen Great Basin. Near the SE corner of the Warner Mountains. Along W side of Tuledad Road ca 3 air mi NE of Dodge Reservoir and 0.5 road-mi S of W end of Tuledad Canyon, on gentle NE-facing slope. Little Hat Mtn 7.5' Quad. Comment
  OBI48148  Castilleja chromosa Rhonda Riggins 1989-4-27 1639 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  CHSC4764  Castilleja lacera R. Carter 1967-7-16 623 Lassen Along side road. 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
  UC103164  Castilleja lacera T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  UC1609288  Castilleja lacera Vernon H. Oswald and Lowell Ahart 1993-6-28 5575 Lassen 0.2 mi n Hwy. 44, e side of Grays Valley (Harvey Valley Rd (33N02), e of Poison Lake); Grays Valley 1749 Comment
  UC1924577  Castilleja lacera Debra Valov 2006-5-29 2006028 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UC726418  Castilleja lacera A. A. Heller 1941-6-26 16234 Lassen ridge w Nieubieber Comment
  CHSC4817  Castilleja linariifolia R. Carter 1967-7-16 617 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca 12 mi n of Susanville, on s side of rd. Comment
  UC584315  Castilleja linariifolia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2281 Lassen e slope and summit Diamond Mt.; Diamont Mt. 2194 Comment
  CAS-BOT-BC244886  Castilleja miniata Louella Bass 1973-6-17 116 Lassen Elysian Valley. Plants of the Sierra Nevada 1325 Comment
  JEPS62629  Castilleja miniata Clare B. Hardham 1969-8-28 17424 Lassen w of Janesville; Sierra Nevada Comment
  RSA18167  Castilleja miniata Carl B. Wolf 1929-9-1 3778 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  CHSC6269  Castilleja miniata subsp. miniata J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  CAS-BOT-BC241000  Castilleja pilosa Michael A. Vincent 1999-6-9 8584 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield 1524 Comment
  CHSC27743  Castilleja pilosa N. E. Heiken 1978-7-28 68 Lassen E of Eagle L., base of basalt jumble, along Lower Dry L. 1645 Comment
  CHSC89725  Castilleja pilosa L. P. Janeway 2004-6-26 8151 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  JEPS114620  Castilleja pilosa Lowell Ahart, John Dittes 2008-6-19 14879 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS22193  Castilleja pilosa Rimo Bacigalupi with S. Galen Smith 1957-6-28 6004 Lassen 5.9 mi s Madeline 1615 Comment
  JEPS86248  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5529 Lassen about 0.5 mi e Nubieber 1249 Comment
  RSA0047057  Castilleja pilosa L. P. Janeway 2004-6-26 8151 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  CHSC112415  Castilleja tenuis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18773 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA0037002  Castilleja tenuis Lowell A. Ahart, John Dittes 2008-6-19 14874 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  RSA0105574  Castilleja tenuis Lowell Ahart, John Dittes 2013-7-22 18840 Lassen About 30 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1063260  Castilleja tenuis A. Simontacchi 1940-6-5 812 Lassen 3.9 mi nw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 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
  UC199377  Castilleja tenuis Franklin P. Nutting 1894-7-21 Lassen near Eagle Lake Comment
  UC27210  Castilleja tenuis J. Burtt Davy Jun 17 1897-Jun 24 1897 3369 Lassen Adobe meadows; Honey Lake Valley Comment
  JEPS103212  Castilleja tenuis G. Schoolcraft 1993-6-29 2314 Lassen Ash Valley RNA 16 miles east of Adin, CA 1554 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
  NY608460  Caulanthus major var. nevadensis N. H. Holmgren 1978-6-11 8923 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  CAS-BOT-BC48533  Ceanothus cordulatus G. Schoolcraft 1988-7-11 1823 Lassen Along Hwy. 44 ca 5 miles n. of Hwy. 36 intersect. Susanville, California 1676 Comment
  CAS-BOT-BC49258  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7993 Lassen Big Valley Mts. Comment
  CAS-BOT-BC52049  Ceanothus prostratus Barbara Shervanick 1974-5-7 1273 Lassen About 2 miles North of Milford on Highway 395, 1 mile Southwest of Honey Lake 1219 Comment
  CAS-BOT-BC52050  Ceanothus prostratus L. B. Barlow 1967-7-4 92 Lassen 5 mi. South of Eagle Lake Biological Station on Gallatin Beach Road 1737 Comment
  CHSC7727  Ceanothus prostratus Beverly J. Wise 1969-4-21 90 Lassen Approx. 2 mi. past Susanville old dump on old dump road. 1341 Comment
  HSC42297  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen 4.5 mi W of Bieber along Hwy. 299 Comment
  UC727092  Ceanothus prostratus A. A. Heller 1941-6-26 16230 Lassen on roadside banks on the ridge w Nieubieber; w of Nieubierber Comment
  UCSB70630  Ceanothus prostratus Sarr, Dan 1995-7-29 Lassen 2 mi S of Eagle Lake Pass, on Eagle Lake Road 1800 Comment
  JEPS42164  Ceanothus velutinus Brown and Wieslander 1921-9-1 83 Lassen Martin Sring Eagle Lake Comment
  UCSB62941  Ceanothus velutinus Sarr, Dan 1995-7-29 Lassen N-side of Eagle Pass, 1 mi. below the summit 1900 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
  CDA37979  Centaurea diffusa T. C. Fuller 1962-8-28 9481 Lassen Secret Valley, Highway 395, 3.3 miles north of road to Karlo. 0 Comment
  UC1229867  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E side of Hwy 395 to Madelaine, 1.6 mi N of Termo Comment
  UCD130019  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen east side of Highway 395 to Madelaine, 1.6 mile north of Termo. Comment
  RSA157745  Centaurea maculosa T. C. Fuller 1962-8-28 9472 Lassen Roadside west side of Hwy. 395, 1.7 miles south of Doyle Comment
  UC1717201  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen w. side of Hwy 395, 1.7 mi. s. of Doyle Comment
  UCD159569  Centaurea stoebe subsp. micranthos D. S. Park 2011-6-27 306 Lassen East of Westwood. Growing near Willard Creek. Comment
  JEPS121264  Centaurea virgata subsp. squarrosa Lowell Ahart, John Dittes 2013-7-23 18910 Lassen Near the summit on the N side of Hwy 299, at entrance road to quarry site, Big Valley Mountain, just E of Big Valley Summit, 2.8 air miles SW of Nubieber. Comment
  JEPS78140  Centaurea virgata subsp. squarrosa Sally Levingson 1972-7-19 99 Lassen 2 mi east of Beiber on Highway A2 beside the road. 975 Comment
  UCR47641  Centaurea virgata var. squarrosa Don Pendleton 1986-6-25 s.n. Lassen Beiber, NE of Fall River Mills, Hwy 299 1258 Comment
  UC35451  Centaurium exaltatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3392 Lassen Honey Lake Valley Comment
  CHSC77196  Centromadia pungens G. Schoolcraft 1998-6-22 Lassen Flats of Shaffer Mtn. along Secret. 1341 Comment
  CAS-BOT-BC400182  Ceratophyllum demersum B. Trowbridge 1977-8-9 5986 Lassen Water of Willow Creek near Rice Canyon northeast of Susanville 1524 Comment
  UCD35729  Cercocarpus ledifolius Beecher Crampton 1960-6-18 5710 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  CDA19743  Chaenactis douglasii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Between Ravendale and Secret Valley. 0 Comment
  CAS-BOT-BC276616  Chaenactis douglasii var. douglasii John Thomas Howell 1955-7-19 30813 Lassen E side of Beckwourth Pass 1493 Comment
  CHSC5202  Chaenactis douglasii var. douglasii R. Gein 1946-6-24 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  CHSC98581  Chaenactis douglasii var. douglasii B. Castro; L. P. Janeway 2005-7-10 1494 Lassen Northern High Sierra Nevada. Crest of the Diamond Mtns, overlooking Janesville and Honey Lake, 0.15 mi N of Rd 28N01 and 0.4 mi E of its junction with Janesville Grade (Rd 29N01/Rd 208). Knoll on N side of crest, in soft decomposed granite soil among rounded granite boulders. 1859 Comment
  CAS-BOT-BC276621  Chaenactis douglasii var. douglasii Gary Schoolcraft 1982-7-6 766 Lassen Fort Sage Mountains, near Jesus Spring 1950 Comment
  SEINET7450277 Image available Chaenactis nevadensis D. W. Kyhos 1967-9-1 67 -87 Lassen Within 1/2 mile north of Hat Lake Comment
  SEINET7450297 Image available Chaenactis stevioides F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  CAS-BOT-BC279643  Chaenactis xantiana H. D. Ripley; R. C. Barneby 1943-6-15 5754 Lassen N.-E. of Litchfield 1234 Comment
  CHSC30603  Chamaebatiaria millefolium Mary Nesset 1975-7-16 10 Lassen E.L.B.S. water tank. 1554 Comment
  POM451345  Chamaebatiaria millefolium J. T. Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  SEINET11908036  Chamaebatiaria millefolium Unknown 1973-1 11 Lassen approx. 50 m W from entrance to Chico State Biological Field Station on E side of Eagle Lake Comment
  HSC29997  Chamaesaracha nana D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19160 Lassen 3 mi. N of Westwood Comment
  CHSC117544  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2016-7-13 21130 A Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC58840  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald; Lowell Ahart 1992-7-16 5114 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. Beds of creek and reservoir. 1691 Comment
  JEPS121256  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-7-22 18855 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS97305  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and L. Ahart 1995-8-14 7178 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
  JEPS52357  Chamaesyce serpyllifolia Brown and Wieslander 1922-7-7 90 Lassen Eagle Lake, Martin Springs Comment
  NY1001693  Chamaesyce serpyllifolia G. Schoolcraft 1981-8-11 556 Lassen Near edge of Said Valley Reservoir 1615 Comment
  UC17811  Chamaesyce serpyllifolia M. S. Baker and Frank Nutting 1894-7-24 Lassen Willow Creek Comment
  CAS-BOT-BC426341  Chenopodium John Thomas Howell 1962-6-19 37889 Lassen Sierra Nevada: Sagebrush Flat, 3 mi. S of Hallelujah Junction 1524 Comment
  UC1746002  Chenopodium desiccatum Annetta M. Carter 1945-9-30 1721 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
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Jul 20 2019
  CAS-BOT-BC473050  Chenopodium desiccatum Ynez Whilton Winblad 1935-10-1 s.n. Lassen Horse Lake Comment
  CDA23377  Chenopodium hians J. T. Howell 1962-6-19 37889 Lassen 3 miles south of Hallelujah Junction. Comment
  CDA23383  Chenopodium leptophyllum M. K. Bellue 1938-8-1 Lassen Near Butte Lake. 0 Comment
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Nov 1 2014
  CHSC60892  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1993-7-8 5659 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
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Nov 1 2014
  JEPS87185  Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake on the S side of Hwy 44 between Oldo Station and Susanville, 1.2 mi SE of County Road A21. 1745 Comment
  CHSC45516  Chimaphila menziesii Lowell Ahart; John Thomas Howell 1974-7-9 538 Lassen On the south side of Eagle Lake Road, near the south edge of Eagle Lake. 1584 Comment
  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
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Mar 6 2011
  CHSC21064  Chrysolepis sempervirens M. S. Taylor 1975-7-16 842 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. Comment
  UC1135264  Chrysolepis sempervirens A. Simontacchi 1940-6-15 881 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 2164 Comment
  CDA19740  Chrysothamnus viscidiflorus D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Madeline. 0 Comment
  SJSU3013  Chrysothamnus viscidiflorus J. W. Tilden 1967-8-23 1772 Lassen Litchfield, southeastern Lassen County 1402 Comment
  CAS-BOT-BC100756  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 2872 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  CAS-BOT-BC105908  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 1271 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC105909  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 1271 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  JEPS21409  Chrysothamnus viscidiflorus subsp. viscidiflorus W. L. Jepson 1918-8-4 7813 Lassen e of Eagle Lake; Horse Lake 1554 Comment
  JEPS94839  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald and Lowell Ahart 1998-9-8 9587 Lassen Kramer Road 3.1 mi s of Lookout; Kramer Road 1280 Comment
  UC773960  Chrysothamnus viscidiflorus subsp. viscidiflorus L. R. Short and Wm. Gansberg 1936-8-13 S- 494 Lassen Burgess Spring Experiment Range 1770 Comment
  UC1037245  Cirsium andersonii Leo Whitney 1933-8-8 1994 Lassen near Poison lake, ca 23 m w (of Eagle Lake) Eagle Lake; Poison Lake 1828 Comment
  UC1136774  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spr. Exp. Range Lassen Forest 1825 Comment
  UCD18968  Cirsium andersonii Raymond D. Ratliff 1965-8-5 45 Lassen Lassen National Forest, Harvey Valley Allotment (HV 20-14). 1725 Comment
  CAS-BOT-BC277934  Cirsium canovirens T. C. Fuller 1959-7-7 2739 Lassen Hwy. 395 6 miles/north/road to Karlo 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
  CDA1173  Cirsium cymosum G. D. Barbe 1982-7-12 3870 Lassen Grasshopper Valley; South Grasshopper Rd, 0.8 miles northeast of Hwy 139. 0 Comment
  CAS-BOT-BC278090  Cirsium douglasii var. breweri Hans Leschke 1960-9-8 1803 Lassen Lassen Volcanic National Park. Little Hot Springs Valley 2225 Comment
  SEINET10725916  Cirsium occidentale var. candidissimum Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 143 Lassen Lassen National Forest. 1.3 mi. on rd. 110, off Hwy. A21. 1821 Comment
  SEINET2050011 Image available Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  CDA1527  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC285730  Cirsium vulgare John Thomas Howell; Gordon H. True 1973-8-1 50160 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CHSC64881  Clarkia gracilis subsp. gracilis Vernon H. Oswald 1995-6-26 6916 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC27720  Clarkia lassenensis Robert A. Schlising; S. Morey, D. Ikeda 1978-6-8 3284 Lassen E of Eagle Lake, on slopes between Lower Dry Lake and Murrers Upper Meadow. 1569 Comment
  CHSC9542  Clarkia lassenensis A. W. Harvilik 1967-6-30 18 Lassen Collected near the junction of rd. 5.19 and the rd. to Murrer's Meadow. 1524 Comment
  CAS-BOT-BC163166  Clarkia lassenensis G. Schoolcraft 1993-6-29 2308 Lassen Ash Valley RNA between Adin & Madeline 1554 Comment
  POM260406  Clarkia lassenensis C. L. Hitchcock 1940-5-26 6610 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  SEINET5336402  Claytonia perfoliata subsp. intermontana J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin CA. Comment
  JEPS120869  Claytonia rubra subsp. depressa Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18742 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
  JEPS126532  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC68621  Cleome platycarpa Vernon H. Oswald; Lowell Ahart 1997-5-7 8403 Lassen Smoke Creek Ranch Rd. 3.4 mi west of the CA-NV state line. Growing in disturbed roadside gravel. 1420 Comment
  UC1537256  Cleome platycarpa Gordon H. True Jr. 1938-7-8 904 Lassen n of Hot Spring Mountain 1371 Comment
  UCD150400  Cleomella plocasperma Harry A. George and F. K. 1957-8-15 s.n. Lassen Honey Lake Wildlife Area, Dakin Unit. Comment
  CHSC23569  Collinsia parviflora W. O. Baum 1971-7-6 38 Lassen E slope of Gallatin Peak. 1950 Comment
  JEPS17613  Collinsia parviflora Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5406 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadows, s end of Warner Mtns); Warner Mts., Modoc National Forest, Long Valley Meadows 2057 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
  UC1023722  Collinsia parviflora Francis W. Pennell 1940-6-9 25752 Lassen 7 mi n of Madeline (Route 395); Route 395 1615 Comment
  UC1123657  Collomia grandiflora A. Simontacchi 1940-7-1 895 Lassen 5.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  HSC23534  Collomia grandiflora R. Carter 1967-7-13 585 Lassen S side of rd. to Eagle Lake Biology Station and Willow Creek 1585 Comment
  SEINET12326975  Collomia grandiflora Unknown 1978-1 57 Lassen Lower Dry Lakes, E of Eagle L 1646 Comment
  JEPS17747  Collomia linearis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5407 Lassen 4.4 mi s Patterson Ranger Sta.; southern end of Warner Mountains, Modoc National Forest, Lon 2057 Comment
  UC1924199  Collomia linearis Debra Valov 2005-8-20 2005229 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1279 Comment
  CHSC6200  Collomia tinctoria 1946-6-13 Lassen Eagle Lake. 1584 Comment
  RSA712891  Collomia tinctoria L. P. Janeway 2005-6-3 8450 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. Comment
  SBBG58209  Collomia tinctoria E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 Comment
  UC23854  Collomia tinctoria M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  CDA3699  Conringia orientalis E. E. Fix 1961-6-1 Lassen E. Williams ranch, Termo. 0 Comment
  SEINET7127328  Convolvulus arvensis M. J. Williams 1974-7-29 74 -L-57 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  JEPS124870 Image available Convolvulus arvensis Laurel Loeblich 1964-6-30 56 -2 Lassen 3 miles north of Hallelujah Junction (highways 40 and 395) on 395. Great Basin flora; pinion pine - juniper- sagebrush. Comment
  JEPS121058 Image available Convolvulus occidentalis subsp. occidentalis Lynne C. Carter 1967-7-12 92 Lassen 6 miles east of Lassen + Shasta County line on Hwy 299, at Lookout over Fall River Valley. Comment
  CAS-BOT-BC383108  Cornus sericea subsp. sericea Andrew Townesmith; Karen M. Meyer 2007-7-20 839 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  UC1122744  Cornus sericea subsp. sericea C. W. Hanks 1934-9-26 92 Lassen w. side Long Valley (near Plumas Nat'l Forest); Sierraville Quad., Long Valley Comment
  CHSC27664  Crepis acuminata Robert A. Schlising 1978-7-15 3317 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  CHSC75453  Crepis acuminata Vernon H. Oswald; Lowell Ahart 1999-6-9 9742 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  RSA716340  Crepis acuminata L. Ahart, John Dittes 2005-6-2 11933 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  UC1136839  Crepis acuminata George A. Fischer and Irwin H. Johnson 1933-7-14 F- 266 Lassen Lassen <National> Forest 1752 Comment
  UC581294  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2346 Lassen about 4 mi se Willow Creek Range Station (se of Adin) 1767 Comment
  UC581249  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2257 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Co.) Comment
  UC1136842  Crepis occidentalis George A. Fischer and Irwin H. Johnson 1933-7-14 F 271 Lassen Lassen <National> Forest 1752 Comment
  UCD130973  Crepis occidentalis Grady L. Webster 1989-5-13 7722 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  SEINET7838805 Image available Crepis occidentalis J. A. Young 1982-6-9 s.n. Lassen Meyer's Ranch, Adin 1372 Comment
  UC726060  Crepis occidentalis subsp. occidentalis A. A. Heller 1938-6-23 15201 Lassen valley e Fredonyer Pass (on State Hwy 36) Comment
  POM230953  Crepis occidentalis subsp. pumila G. Ledyard Stebbins, J. A. Jenkins 1937-7-15 2359 Lassen West side of Big Valley Mountain on Highway 1220 Comment
  CDA4444  Crepis occidentalis subsp. pumila T. C. Fuller 1963-6-1 10619 Lassen West side of road to Susanville, 2.0 mi. south of Pittville. 0 Comment
  RSA233758  Crypsis vaginiflora R. F. Thorne, C. W. Tilforth 1969-9-6 39255 Lassen along Long Valley Creek, c. 14 mi. SE of Milford. 1311 Comment
  UC1537698  Cryptantha Gordon H. True Jr. 1938-7-9 909 Lassen near Termo 1524 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
  CHSC106681  Cryptantha circumscissa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC71074  Cryptantha circumscissa Vernon H. Oswald; Lowell Ahart 1998-5-22 9135 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  JEPS94705  Cryptantha circumscissa Vernon H. Oswald and Lowell Ahart 1998-5-22 9135 Lassen 3.5 mi n of Doyle (Fort Sage Road 2.3 mi n of Hackstaff Road); Fort Sage Road 1341 Comment
  JEPS94827  Cryptantha circumscissa Vernon H. Oswald and Lowell Ahart 1998-5-22 9135 Lassen 3.5 mi n of Doyle (Fort Sage Road 2.3 mi n of Hackstaff Road); Fort Sage Road 1341 Comment
  UCD54568  Cryptantha circumscissa Ellen Dean; Dawn Cunningham 2005-10-25 2751 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  UCD55276  Cryptantha circumscissa Ellen Dean 2006-5-15 3091 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  POM73157  Cryptantha crassisepala var. elachantha Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.?] 1220 Comment
  UCD55289  Cryptantha flaccida Ellen Dean; Gary Schoolcraft 2006-5-16 3110 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1260 Comment
  HSC63772  Cryptantha flavoculata Teresa Prendusi 1980-5-22 1125 Lassen Shaffer Mtn. near top 2012 Comment
  POM46564  Cryptantha humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1483850  Cryptantha humilis G. Schoolcraft 1979-5-13 50 Lassen on ridge top of Skedaddle mtns. Skedaddle Mtns. 2286 Comment
  NY1111719  Cryptantha intermedia var. grandiflora N. H. Holmgren 1980-7-3 9474 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  JEPS103177  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley 1706 Comment
  SDSU20202  Cryptantha schoolcraftii Ronald B. Kelley 2005-5-26 886 Lassen South end of Coppersmith Hills, on top edge of north-to-south running canyon of west facing steep slopes, 0.75 miles north of Tuledad Valley Road (CR506), T37N R17E sec.35 NE1/4 of NW1/4. Also found at 41 deg. 02.022'N, 120 deg. 0.529'W (WGS64), 5540' elev. 1715 Comment
  UC1587053  Cryptantha torreyana G. Schoolcraft 1991-7-30 2193 Lassen e side Widow Mountain 1889 Comment
  UC24702  Cryptantha torreyana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek 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
  CHSC59701  Cusickiella douglasii Mary Meyer 1980-7-15 Lassen 1546 Comment
  JEPS90144  Cusickiella douglasii Dean Wm. Taylor with Glenn Clifton 1990-6-12 10879 Lassen Modoc Plateau, Ash Valley, Forest Road 39N08, just as road enters the valley (as traveling from Adin) Ash Valley; Modoc Plateau, , Forest Road 39N08 1554 Comment
  SEINET248370  Cusickiella douglasii Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC114056  Cyperus squarrosus George Wilson Gillett 1957-9-4 1125 Lassen Widow Lake. East margin of lower lake, near inlet in drying mud. 2072 Comment
  SEINET6629019  Cystopteris fragilis M. J. Williams 1970-7-4 s.n. Lassen Ash Creek, SE of Adin 1280 Comment
  CAS-BOT-BC445517  Damasonium californicum Arnold Tiehm; Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line 1698 Comment
  UCD169624  Damasonium californicum R. F. Thorne; Larry E. DeBuhr 1975-8-22 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1615 Comment
  JEPS124717 Image available Damasonium californicum M. L. Wheelis 1964-6-30 137 Lassen Second bridge (to the north) between Bieber and New Bieber. Comment
  UCD138002  Damasonium californicum Calvin McMillan; Malcom A. Nobs 1949-6-15 784 Lassen Nubieber. Comment
  UCD60868  Danthonia californica var. americana Mrs. Austin 1894-6-1 295 Lassen Lassen Creek. Comment
Read comments
Jul 11 2013
  CAS-BOT-BC192328  Danthonia unispicata John Thomas Howell 1977-6-22 52406 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  CAS-BOT-BC192329  Danthonia unispicata Ralph K. Gierisch 1968-7-11 3353 Lassen Lassen National Forest. Harvey Valley - Dixie Spr. 1706 Comment
  UC1131405  Danthonia unispicata Robert W. Gardner 1937-6-18 G- 7 Lassen Burgess Spring Experimental Range Halls Flat Quadrangle Comment
  UCD61297  Danthonia unispicata F. C. Raney 1966-6-25 Lassen Harvey Valley, Lassen National Forest. Comment
  UCD61347  Danthonia unispicata L. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  CAS-BOT-BC291778  Deinandra lobbii G. Schoolcraft 1989-7-24 1997 Lassen West of Hayden Hill Mine along road Comment
  CAS-BOT-BC291779  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  UC1136878  Delphinium andersonii L. R. Short 1936-5-12 S- 347 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1834 Comment
  UC854041  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  UCD55273  Delphinium andersonii Ellen Dean 2006-5-15 3083 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
  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
  CAS-BOT-BC26673  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen one mile east of Fredonyer Pass on Highway #36, Arid Transition Life Zone 1706 Comment
  CHSC5070  Delphinium depauperatum D. L. Stites 1967-7-4 106 Lassen Ca. 8 mi s of Eagle Lake Biology Station, Deans Meadow. 1950 Comment
  JEPS6109  Delphinium nudicaule A. A. Heller 1938-6-4 15149 Lassen E of Fredonyer Pass, Lassen Co. Comment
  CAS-BOT-BC116044  Delphinium nuttallianum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49180 Lassen Sierra Nevada, Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC116052  Delphinium nuttallianum Albert Michael Vollmer; L. Beane 1953-7-1 84 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC36459  Delphinium nuttallianum Susan H. Euing 1982-6-4 13 Lassen Ca. 1/2 mi e of forest station rd 5.16 heading toward Murrers Upper Meadow. Comment
  HSC27052  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19165 Lassen 3 mi. N of Westwood Comment
  CAS-BOT-BC116043  Delphinium nuttallianum Mrs. H. C. Cantelow 1949-6-11 8 Lassen East slope of Fredonyer Pass. Comment
  JEPS103186  Delphinium stachydeum G. Schoolcraft 2000-7-5 2910 Lassen On Shinn Mountain above Spanish Spring Reservoir 2011 Comment
  RSA0011561  Deschampsia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46991 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC194260  Deschampsia cespitosa subsp. cespitosa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49435 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  HSC95293  Deschampsia cespitosa subsp. cespitosa Gordon Leppig, Tony LaBanca 1997-6-28 511 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM203128  Deschampsia cespitosa subsp. cespitosa J. T. Howell 1934-7-9 12517 Lassen Bridges Creek Spring. Comment
  UC1037093  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1934-7-15 2211 Lassen ca. 15 mi. w. Eagle lake (Crater Lake, Lassen Nat'l Forest); Lassen Nat'l Forest, Crater Lake 2133 Comment
  UC1037258  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1933-8-2 106 Lassen ca. 8 mi. n.w. Eagle lake (Slate Creek, Lassen Nat'l Forest); Lassen Nat'l Forest, Slate Creek 1920 Comment
  UC506928  Deschampsia cespitosa subsp. cespitosa George A. Fischer and Irwin H. Johnson 1933-7-14 F 244 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  CAS-BOT-BC192745  Deschampsia danthonioides Malcom A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  CHSC66282  Deschampsia danthonioides Vernon H. Oswald; Lowell Ahart 1996-6-24 7840 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
  HSC100183  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 2011-8-15 13379 Lassen Along Hwy. 36 at the intersection with the Bizz Johnson Trailhead Road. Comment
  UC1131558  Deschampsia danthonioides Robert W. Gardner 1937-6-20 G- 21 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UC1131560  Deschampsia danthonioides A. Simontacchi 1940-6-8 827 Lassen Halls Flat Ranger Station Lassen Nat'l Forest, Halls Flat Quad., Halls Flat Ranger Sta Comment
  UC1924585  Deschampsia danthonioides Debra Valov 2006-5-28 2006015 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  UCD62833  Deschampsia danthonioides Malcolm A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles N of Madeline. Comment
  CAS-BOT-BC201882  Deschampsia elongata George W. Gillett 1957-7-28 935 Lassen Banks of Widow Lake 2072 Comment
  SEINET5343182  Descurainia paradisa var. paradisa F. B. Headley 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  UC1143030  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experimental Range; Lassen National Forest 1833 Comment
  CHSC48325  Descurainia pinnata subsp. halictorum Vernon Oswald 1986-5-28 2053 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  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
  JEPS107794  Descurainia sophia Lowell Ahart 2005-6-2 11925 A Lassen near the Anderson Ranch home, Long Valley, about 4 3/4 air mi N of intersection of Scott Road and Hwy 70, 6.2 air mi NW of Hallelujah Junction 1459 Comment
  UCD114789  Descurainia sophia R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  SD8289  Dicentra formosa Mrs. R. M. Austin Aug 1882 Lassen Comment
  UC3327  Dichelostemma multiflorum M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixey Mts. Comment
  SD132250  Dieteria canescens G. Helmkamp 1990-9-23 G 8 Lassen North of Ravendale. 1675 Comment
  CHSC98341  Dieteria canescens var. shastensis B. Castro; L. P. Janeway 2005-7-10 1504 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  JEPS40723  Dieteria canescens var. shastensis Duncan Dunning 1921-8-15 Lassen near Facht (railroad station) (sw of Westwood Junction); Robbers Creek Comment
  UC1536890  Dieteria canescens var. shastensis G. H. True Jr. 1936-6-25 532 Lassen flats e of Harvey Ranger Station; Harvey Valley 1706 Comment
  HSC103593  Dieteria canescens var. shastensis Thomas W. Nelson, Jane Nelson 1986-6-23 8140 Lassen Along State Route 44, 10.9 mi. SE of Old Station junction. 1585 Comment
  CAS-BOT-BC153676  Diplacus mephiticus Alice Eastwood; John Thomas Howell 1940-6-15 8325 Lassen Grasshopper Valley Comment
  CHSC13945  Diplacus mephiticus M. S. Taylor 1974-7-6 311 Lassen On Gallatin Peak overlooking Gallatin Beach, ca. 13 mi nw of Susanville. 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
  CHSC68877  Diplacus mephiticus Vernon Oswald; Lowell Ahart 1997-6-24 8597 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. 1685 Comment
  CHSC91183  Diplacus mephiticus Lowell Ahart; John Dittes 2005-6-1 11869 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
  SEINET13704195  Diplacus mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat. Comment
  SEINET201638 Image available Diplacus mephiticus Arthur Cronquist, Arthur H. Holmgren 1959-1 8454 Lassen 25 mi NW of Reno Comment
  CAS-BOT-BC151432  Diplacus nanus Clarence R. Quick 1962-6-17 62 -22 Lassen Swains Hole, in sagebrush flat south of Blacks Mountain Experimental Station 1554 Comment
  CDA6686  Dipsacus fullonum T. C. Fuller, Lee Wheeler 1959-7-23 2820 Lassen Nubieber. 0 Comment
  CAS-BOT-BC208726  Distichlis spicata Malcom A. Nobs; S. Galen Smith 1949-7-22 1069 Lassen Northeast shore of Eagle Lake on drying shore. Comment
  UC580711  Distichlis spicata E. Sawyer 1935-6-27 214 Lassen Long Valley 1310 Comment
  UCD64451  Distichlis spicata H. S. Yates 1936-8-11 6056 Lassen Near Red Rock. 1341 Comment
  UCR7793  Distichlis spicata var. nana Marilyn Malin 1968-6-20 258 Lassen Great Basin; Modoc Plateau, west side of Eagle Lake c. 100 yds. south of Bly Tunnel 1561 Comment
  SACT001015  Distichlis spicata var. stricta Malcolm Nobs, S. Smith 1949-7-22 Lassen Both staminate and pistillate, forming a dense turf around high water mark, alkaline. Comment
  SEINET10929826  Distichlis spicata var. stricta Alan A. Beetle 1941-6-28 Beetle 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak, open meadow. Assoc. Stipa pulchra, Hordeum, Koeleria cristata. Comment
  CAS-BOT-BC136180  Dodecatheon alpinum John Thomas Howell 1934-6-14 12114 Lassen Near Lost Lake - Warner Mountains 2438 Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  HSC95203  Dodecatheon alpinum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-28 507 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM76750  Dodecatheon alpinum subsp. majus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1137728  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1767 Comment
  UC1609465  Dodecatheon conjugens Vernon H. Oswald and Lowell Ahart 1993-5-12 5381 Lassen Forest Rd. 32N08 to Crater Lake 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, edge of meadowy opening along creek); Pine Creek 1737 Comment
  UC1951073  Dodecatheon conjugens Debra Valov 2009-4-25 2009018 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UCR227662  Downingia R. F. Thorne, Larry E. DeBuhr 1975-8-22 47207 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  CHSC113007  Downingia bacigalupii Lowell Ahart; John Dittes 2013-7-22 18875 Lassen Around a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS19679  Downingia bacigalupii Rimo Bacigalupi with George Bacigalupi Jr. and S. Galen Smith 1957-6-28 5999 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plain 1615 Comment
  UC1229824  Downingia bacigalupii John Weiler 1959-4-22 59203 Lassen 11.1 mi se Eagle Lake (along county highway A-1) Comment
  UCD23274  Downingia bacigalupii Louis K. Mann, Pat Mann 1963-6-18 s.n. Lassen Road cut through sagebrush flat. 13 miles north of Susanville on road to Merrillville. Comment
  CHSC59527  Downingia bicornuta Mary Meyer 1980-7-9 506 Lassen Horse Camp Springs, down-stream in cow pod. 1706 Comment
  UC157670  Downingia bicornuta var. bicornuta Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UC1609203  Downingia bicornuta var. bicornuta Vernon H. Oswald and Lowell Ahart 1993-7-8 5649 Lassen 1.9 mi n Highway 44 (Pittville Rd (Lassen 111, 36N01), se edge of Poison Lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  JEPS108508  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 228 -95 Lassen W sie of Rt. 395, 3.5 mi S of Madeline. Comment
  JEPS120848  Downingia cuspidata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18727 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
  SEINET3147635  Downingia elegans M. E. Jones 1897-6-22 sn Lassen 10 mi S of Amedee 1219 Comment
  UCR163273  Downingia insignis Jim Andre 1993-6-29 1410 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  RSA292991  Downingia insignis Stanton A. Cook 1958-7-19 825 Lassen 7.4 miles N of Ravendale on route 395. Comment
  HSC68798  Downingia laeta Gary Schoolcraft 1980-7-16 319 Lassen N end of Nelson Corral Reservoir area. 1805 Comment
  JEPS24763  Downingia laeta John H. Weiler, L. Constance, E. Molseed 1960-6-13 60164 Lassen 1.7 mi. s. Ravendale (w. side of U.S. 395) 1615 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
  UC1188737  Downingia laeta John H. Weiler, L. Constance, and E. Molseed 1960-6-13 60164 Lassen 1.7 mi s Ravendale (at w side of U.S. Hwy 395) 1615 Comment
  SEINET10539558  Draba David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17801 Lassen 6 mi. N of hallelujah jct. On u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  JEPS94484  Draba verna Vernon H. Oswald and Lowell Ahart 1997-5-27 8522 Lassen 3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04 1731 Comment
  CHSC61140  Draba verna var. aestivalis Vernon H. Oswald; Lowell Ahart 1993-5-12 5391 Lassen Butte Lake Rd., 1.4 mi S of Hwy. 44, between Old Station and Poison Lake. Along the road. 1652 Comment
  CHSC96701  Drosera anglica Gordon Leppig; J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. Peatland i ... Field redacted by CHSC, contact the data manager for more information 1970 Comment
  HSC95149  Drosera anglica Gordon Leppig, J. Cromwell 1997-7-27 609 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UCD99551  Drosera rotundifolia Barry Rice 2009-7-5 BR 090703 Lassen at Robbers Spring. Comment
  CAS-BOT-BC159715  Drymocallis glandulosa Louella Bass 1977-6-26 77 -5 Lassen Elysian Valley, south of Superdam. 1325 Comment
  JEPS106520  Drymocallis glandulosa var. glandulosa L. P. Janeway 2004-6-26 8154 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
  UC1143045  Drymocallis lactea L. R. Short and J. Warren 1936-6-10 S- 425 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1853 Comment
  CHSC23710  Drymocallis lactea var. lactea Robert Smallwood 1970-6-27 129 Lassen North edge of Dean's Meadow. Comment
  HSC31371  Dysphania pumilio D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19292 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  JEPS121286  Elatine Lowell Ahart, John Dittes 2013-7-22 18883 Lassen Man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA233772  Elatine R. F. Thorne, C. W. Tilforth, K. Thorne 1969-9-5 39134 a Lassen Said Valley Reservoir Comment
  CHSC116198  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20300 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
  UCR198140  Elatine chilensis Daniel B. Marcum 2007-7-25 s.n. Lassen 6 mi south of Bieber in Big Valley. Robin Harbert's wild rice field 1280 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  CHSC112770  Eleocharis acicularis Lowell Ahart; John Dittes 2013-7-22 18880 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
  JEPS28332  Eleocharis acicularis George W. Gillett 1957-7-28 933 Lassen Widow Lake Lassen Volcanic National Park (shore) 2072 Comment
  UC1609483  Eleocharis bella Vernon H. Oswald and Lowell Ahart 1993-6-28 5599 Lassen NE of Poison Lake (Rd 35N04 at Aspen Well, N of Hwy 44 on NW edge of Harvey Valley) 1725 Comment
  CAS-BOT-BC112847  Eleocharis macrostachya Hans Leschke 1959-8-2 1588 Lassen Manzanita Lake 1781 Comment
  JEPS127217  Eleocharis palustris Lowell Ahart, John Dittes 2016-7-15 21215 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  HSC95296  Eleocharis suksdorfiana Gordon Leppig 1998-7-13 968 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC10943  Elymus X hansenii M. T. Milligan 1964-8-6 210 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC506940  Elymus X saundersii George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassn <National> Forest 1737 Comment
  CHSC67076  Elymus cinereus Willis Ball 1969-6-25 39 Lassen Found in Upper Murrer's Mdw. 1584 Comment
  JEPS123502  Elymus cinereus Wilson Collison, Jaileen Merced 2015-10-26 CA 320 -149 Lassen Head south on US-395 for 31.4 mi towards Madeline, turn left on Clarks Valley Road. Drive 10.5 mi on Clark Valley Road; take a right on Blue Lake Road. Comment
  SEINET10521752  Elymus cinereus var. pubens Billy Joe Cox 1971-6-2 Cox 3232 Lassen 5 mi S of Milford near Honey Lake on US Hwy 395; along roadside in grass-Artemesia tridentata assoc.; Quercus- Jeffery Pine on mountain range to west at approx. same alt. 1250 Comment
  UCD64242  Elymus condensatus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  CAS-BOT-BC227491  Elymus elymoides G. Schoolcraft 1989-6-19 1917 Lassen Ash Valley RNA/ACEC Comment
  JEPS122360  Elymus elymoides Joseph Broberg, Jaycee Leonard 2012-7-31 CA 320 -117 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left into the Mendibourne wildlife game management area. Collection is across a fence in BLM land Comment
  UC1924248  Elymus elymoides Debra Valov 2004-6-9 2004264 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD61421  Elymus elymoides L. D. Whitney 1935-6-27 Lassen Squaw Valley. 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
  SEINET10527893  Elymus elymoides Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2581 Lassen 6 mi S of Adin, alond Calif. hwy 139 right-of-way; in basalt-clay, grassy road bank; Artemesia-Juniper assoc. 1372 Comment
  UC1136931  Elymus elymoides subsp. elymoides L. R. Short and J. Warren 1936-6-29 S- 461 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1820 Comment
  JEPS126495  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-6-28 CA 350 -72 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  CHSC111249  Elymus elymoides var. elymoides L. P. Janeway; B. Castro 2012-7-3 10943 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  UC1037105  Elymus glaucus Leo Whitney 1934-7-15 3003 Lassen ca 15 mi w Eagle Lake; Lassen National Forest, Crater Lake 2133 Comment
  UCD61834  Elymus glaucus A. A. Beetle 1941-6-28 2803 Lassen 10 miles W of Chester, rte 36. Comment
  CAS-BOT-BC206733  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51987 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CAS-BOT-BC206734  Elymus glaucus subsp. glaucus John Thomas Howell; Gordon H. True 1973-8-1 50179 Lassen Gold Run Creek south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  UCD62499  Elymus multisetus John Thomas Howell 1976-7-20 52001 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  JEPS127708  Elymus spicatus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -161 Lassen Juniper Ridge Road, before split with Juniper Tree Road. Population North of road. Comment
  UCR17282  Elymus spicatus Frank C. Vasek 1975-7-11 750711- 32 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UCR244046  Elymus spicatus Jim Andre 1993-6-1 19716 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  UC70687  Elymus trachycaulus J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  SEINET12755568  Elymus triticoides F. H. Hillman 1897-7-12 s.n. Lassen Chat. Comment
  UC1220396  Elytrigia elongata T. C. Fuller 1963-7-15 10887 Lassen 2.9 mi se Pittville (s of road to Little Valley) Comment
  CHSC32865  Ephedra viridis J. S. White 1980-4-14 124 Lassen 3 mi ne of Wendel. 1371 Comment
  SEINET3868651  Ephedra viridis D. H. Norris, T. Nelson 1971-6-22 19306 Lassen Along Hwy. 395 about 4 miles east of Standish.; 0 Comment
  UCD14623  Ephedra viridis Nathan Horn 1989-5-18 14 Lassen Great Basin, along Highway 70. 1487 Comment
  SEINET10532255  Ephedra viridis Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 893 Lassen Collected 3 mi N of Milford, Callif., on Hwy 395 at Honey Lake campgrounds. Comment
  HSC68917  Epilobium brachycarpum Gary Schoolcraft 1980-7-7 302 Lassen N end of Eagle Lake 1585 Comment
  SEINET12539651  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  SEINET12541844  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1136768  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  UC773909  Epilobium brachycarpum L. R. Short and Wm. Gansberg 1936-8-11 S- 493 Lassen Burgess Spring Experiment Range Lassen National Forest 1746 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
  CHSC111098  Epilobium ciliatum subsp. ciliatum Lowell Ahart; John Dittes 2012-7-9 18301 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 mile (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
  CHSC99524  Epilobium ciliatum subsp. glandulosum Lowell Ahart; John Dittes 2008-6-20 14948 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC106068  Epilobium densiflorum Lowell Ahart; John Dittes 2010-7-31 16994 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  NY1000270  Epilobium densiflorum G. Schoolcraft 1982-8-18 893 Lassen West of Doyle 1585 Comment
  CHSC27074  Epilobium oregonense Robert A. Schlising 1978-8-1 3333 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  CHSC77220  Epilobium oregonense G. Schoolcraft 1993-7-20 2330 Lassen About 1 mile s. of Boot Lake. Along creek. 1950 Comment
  HSC95331  Epilobium oregonense Gordon Leppig, J. Cromwell 1997-7-27 605 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95332  Epilobium oregonense Gordon Leppig 1998-7-12 937 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC57976  Equisetum John Thomas Howell 1976-7-19 51994 Lassen On Gold Run Creek sw. of Susanville. Comment
  CHSC25085  Equisetum laevigatum K. R. Stern 1967-7-1 2465 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  SEINET10530241  Equisetum laevigatum Mary Susan Taylor 1982-5-29 Taylor 4566 Lassen 4900 ft. T22N R17E sw/sw sec 23. Loyalton quad. In sandy rd embankment at jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno. 1493 Comment
  SBBG115768  Eragrostis mexicana subsp. virescens J. T. Howell 1976-7-19 51943 Lassen Susanville 1296 Comment
  CAS-BOT-BC174121  Eremogone aculeata M. S. Taylor; B. Hammond 1982-8-27 5056 A Lassen On ridge between Crystal and Adams Peaks, Diamond Mts, ca. 4 air mi sw of Constantia 2225 Comment
  SEINET8267478  Eremogone congesta L. E. Detling 1936-6-28 1757 Lassen near Susanville. 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
  CHSC91525  Eremogone congesta var. congesta L. P. Janeway 2005-7-3 8457 Lassen High Cascade Range. Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  CAS-BOT-BC174202  Eremogone congesta var. congesta D. B. Dunn; B. J. Cox 1971-6-2 17755 Lassen Approx. 12 mi. S. of Adin on Calif. Hwy. 139 1371 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
  CHSC117206  Eremogone congesta var. subcongesta Lowell Ahart; John Dittes 2016-6-7 20983 Lassen 40 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
  CHSC66382  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1996-6-17 7798 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  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
  SJSU3559  Eremogone congesta var. subcongesta V. Hardham 1965-7-12 129 Lassen Willow Cr c. 13 mi SE of Adin (Siskiyou Co) on State Rte 139, Modoc National Forest 1463 Comment
  CAS-BOT-BC159993  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen North of Balls Canyon on U. S. Highway #395 Comment
  CAS-BOT-BC159994  Eremothera boothii subsp. alyssoides David D. Keck; J. Clausen 1935-6-24 3741 Lassen 2 mi. S. of Ravendale 1464 Comment
  UC1483823  Eremothera minor G. Schoolcraft 1980-6-11 267 Lassen w Wendel 1219 Comment
  CHSC34596  Eriastrum signatum Robert A. Schlising 1978-7-1 3298 Lassen E of Eagle Lake, NE of Eagle L. Field Station. On lava flow from Black Mt. 1584 Comment
  UC1123886  Eriastrum signatum E. Sawyer 1935-6-29 222 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  JEPS103167  Eriastrum signatum Beth Corbin 2002-10-2 1115 Lassen Grasshopper Valley, S of Termo-Grasshopper Road. 1633 Comment
  JEPS116750  Eriastrum signatum David Gowen 2006-8-2 656 Lassen Hallelujah Junction along frontage road on east side of Hwy 395. Comment
  RSA0125158  Eriastrum signatum Marcus E. Jones 1897-6-22 9972 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  NY1012886  Eriastrum sparsiflorum W. W. Eggleston 1911-7-8 7191 Lassen Vicinity of Doyle Station 1290 Comment
  CDA18273  Eriastrum wilcoxii G. D. Barbe 1974-8-2 1938 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  JEPS14040  Eriastrum wilcoxii Rimo Bacigalupi with G. T. Robbins 1955-7-21 5418 Lassen along Smoke Creek rd. 6.8 mi e U.S. Highway 395 (s edge of valley); Secret Valley Comment
  JEPS69071  Eriastrum wilcoxii W. L. Jepson 1918-8-2 7792 Lassen Long Valley 1219 Comment
Read comments
Nov 7 2008
  SEINET11836160  Ericameria Unknown 1948-1 s.n. Lassen near Doyle on Rt. 395 1219 Comment
  CAS-BOT-BC286603  Ericameria bloomeri R. K. Gierisch; D. H. Esplin 1969-8-27 3598 Lassen Lassen National Forest Comment
  CAS-BOT-BC286604  Ericameria bloomeri R. K. Gierisch; D. H. Esplin 1969-8-27 3598 Lassen Lassen National Forest Comment
  UC1037321  Ericameria bloomeri Leo Whitney 1934-9-9 1886 Lassen near summit Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 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-BC298177  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  RSA518408  Ericameria nauseosa var. oreophila George K. Helmkamp 1990-9-23 A- 2 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  RSA719707  Ericameria nauseosa var. oreophila Michael A. Vincent, K. Levings 2006-7-29 12921 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  UCD54535  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2720 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-BC294180  Ericameria nauseosa var. speciosa G. Schoolcraft 1987-9-9 1775 Lassen Ash Valley RNA 1554 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
  JEPS21495  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-27 4628 Lassen Susanville 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
  UC74068  Erigeron aphanactis var. aphanactis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Honey Lake Valley, Long Valley Comment
  CHSC27598  Erigeron bloomeri J. D. Prouty 1978-6-28 6 Lassen Lower Dry Lakes E of Eagle Lake. 1645 Comment
  CHSC29923  Erigeron bloomeri Robin Ondricek 1978-6-6 35 Lassen 1 mi S of Colley Point Overlook on Hwy 139. 1584 Comment
  SEINET3132724  Erigeron bloomeri J. L. Strother 1970-5-23 952 Lassen ca. 6 mi. N of Honey Lk. 1280 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
  CHSC25088  Erigeron bloomeri var. bloomeri K. R. Stern 1967-6-24 2415 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC99139  Erigeron bloomeri var. bloomeri Lowell Ahart; John Dittes 2008-6-19 14894 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
  GMDRC7734  Erigeron bloomeri var. bloomeri J. M. Andre, G. Clifton 1993-6-1 33411 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  UC1136834  Erigeron bloomeri var. bloomeri George A. Fischer and Irwin H. Johnson 1933-7-12 F 217 Lassen Lassen National Forest 1722 Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline Comment
  JEPS41774  Erigeron divergens W. L. Jepson 1918-8-2 7778 Lassen Beckwith Pass 1463 Comment
  POM33001  Erigeron divergens Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CAS-BOT-BC295976  Erigeron divergens Peter H. Raven 1963-5-29 18424 Lassen U.S. Highway 395 12.0 miles south of Ravendale Comment
  POM32999  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CHSC67164  Erigeron eatonii var. sonnei James D. Jokerst 1991-5-29 3301 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
  CAS-BOT-BC300425  Erigeron elegantulus Roxana S. Ferris; Rena Duthie 1919-6-12 20 Lassen Madeline Comment
  CHSC112185  Erigeron elegantulus Dean Wm. Taylor 2012-6-7 21227 Lassen Modoc Plateau. Grass Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139. 1635 Comment
  UC102023  Erigeron filifolius unknown 1892-6-26 Lassen Milford Comment
  UC87694  Erigeron filifolius T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CHSC93249  Erigeron filifolius var. filifolius John Dittes; Scott Chamberlain 2004-6-28 1016 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
  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-BC295180  Erigeron inornatus Clarence R. Quick 1964-8-5 64 -97 Lassen Cal Mt. east of Poison Lake 1767 Comment
  SBBG8113  Erigeron inornatus H. and M. Dearing 1938-7-1 2236 Lassen Susanville Comment
  UC2027204  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen National Forest. N of 30N61, W of A21. Swain Mountain quadrangle Comment
  HSC42422  Erigeron inornatus var. inornatus Barbara Kelly 1977-8-8 547 Lassen Ash Creek Campground Comment
  POM39968  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CAS-BOT-BC295959  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  CHSC30596  Erigeron philadelphicus Marc Held 1972-7-7 46 Lassen 1 mile north of Gallatin house. Comment
  CAS-BOT-BC300122  Erigeron pumilus var. intermedius Alice Eastwood; John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC71222  Erigeron pumilus var. intermedius Vernon H. Oswald; Lowell Ahart 1998-6-4 9139 Lassen Red Rock Rd at its junction with Hwy. 395 south of Constantia. 1365 Comment
  HSC82250  Erigeron pumilus var. intermedius Thomas W. Nelson, Jane Nelson 1980-7-6 5994 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1567402  Erigeron pumilus var. intermedius G. Schoolcraft 1989-6-19 1916 Lassen Ash Valley RNA/ACEC , Susanville 1554 Comment
  UC31462  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  CAS-BOT-BC300117  Erigeron pumilus var. intermedius Gary Schoolcraft 1989-6-19 1916 Lassen Ash Valley RWA/ACEC Comment
  CAS-BOT-BC241568  Eriogonum baileyi var. baileyi Margaret Williams; Steven Williams 1974-7-26 74 -L-25 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  NY243326  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville. Comment
  SEINET530700  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  CAS-BOT-BC241569  Eriogonum baileyi var. baileyi E. K. Balls; P. C. Everett 1952-10-10 18139 Lassen 5.5 mi. n.e. of Litchfield, Hwy 395, between Susanville and Alturas 1280 Comment
  NY399607  Eriogonum baileyi var. baileyi E. K. Balls 1952-10-10 18139 Lassen 5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas 1280.2 Comment
  NY242982  Eriogonum baileyi var. divaricatum R. F. Hoover 1940-10-5 4673 Lassen Pass between Shaffer Mountain and Warren Peak. Comment
  CAS-BOT-BC244039  Eriogonum baileyi var. praebens R. F. Hoover 1940-10-5 4673 Lassen Between Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC241832  Eriogonum caespitosum B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6567 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield 1330 Comment
  CAS-BOT-BC241837  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N. LItchfield, 26.6 mi S Ravendale 1310 Comment
  RSA238630  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along Hwy 395, 4.5 miles south of Ravendale Comment
  POM105623  Eriogonum elatum var. elatum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  NY281661  Eriogonum maculatum R. F. Hoover 1940-10-5 4670 Lassen Wendel. Comment
  POM105455  Eriogonum microtheca var. ambiguum Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  UCR67383  Eriogonum microthecum var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 mi north of Litchfield along US Hwy 395 1437 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
  CAS-BOT-BC266365  Eriogonum nudum var. deductum H. D. Ripley; R. C. Barneby 1943-6-13 5700 Lassen South of Milford 1569 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
  CAS-BOT-BC261445  Eriogonum nudum var. nudum Clare B. Hardham 1969-8-28 17442 Lassen West of Janesville Comment
  UC1542949  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1759 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  UC761785  Eriogonum nudum var. pubiflorum R. F. Hoover 1940-9-28 4629 Lassen Susanville Comment
  NY762344  Eriogonum nudum var. pubiflorum B. Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km north of Route 299 1065 Comment
  NY282047  Eriogonum ovalifolium var. nevadense G. Schoolcraft 1982-6-28 738 Lassen Ft. Sage Mtns. 762.0 Comment
  OBI76937  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen Natl forest. NW of intersection of 29N02Y and the "B" spur. Fredonyer Pass quad T29N R10E sec 22 SE of NE 1630 Comment
  RSA0020051  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen National Forest. NW of intersection of 29N02Y and the ''B'' spur. 1630 Comment
  SEINET516318  Eriogonum ovalifolium var. purpureum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the W side of Hwy. 44 ca. 1 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  UC1735877  Eriogonum prociduum Dean W. Taylor 1992-5-7 12543 Lassen Ash Valley, ca. 1.5 miles SW of Ash Valley cemetary 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
  RSA122742  Eriogonum spergulinum var. reddingianum L. R. Short, Jan Gish 1936-6-2 S- 375 Lassen Jeffrey ponderosa pine. 1799 Comment
  RSA716265  Eriogonum sphaerocephalum L. Ahart, John Dittes 2005-6-2 11984 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Road and Highway 70; 5.8 mi. (air) northwest of Hallelujah Junction. 1431 Comment
Read comments
Jun 1 2009
  SBBG65540  Eriogonum sphaerocephalum S. W. Hutchinson -Jun-1925 858 Lassen near Susanville 1219 Comment
  CAS-BOT-BC271960  Eriogonum sphaerocephalum var. halimioides B. J. Hammerly 1941-6-21 46 Lassen 8 mi. SE. of Likely on Blue Lake Road Comment
  CHSC60914  Eriogonum sphaerocephalum var. halimioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5674 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 an open sagebrush flat on the E side of the road. 1694 Comment
  SEINET530721  Eriogonum sphaerocephalum var. halimioides Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  UC1483798  Eriogonum sphaerocephalum var. halimioides Teresa Prendusi 1980-7-14 Lassen along Ash Valley road about 15 mi w Madeline; Ash Valley 1524 Comment
  UC412796  Eriogonum sphaerocephalum var. halimioides Franklin P. Nutting Lassen near Lookout; Big Valley Comment
  CAS-BOT-BC262734  Eriogonum sphaerocephalum var. sphaerocephalum Louella Bass 1983-6-10 2 -83 Lassen Lassen College Campus, Susanville Comment
  CAS-BOT-BC262740  Eriogonum sphaerocephalum var. sphaerocephalum Brandegee 1892-6-30 s.n. Lassen Susanville Comment
  JEPS56418  Eriogonum sphaerocephalum var. sphaerocephalum Hilda W. Grinnell 1934-5-31 Lassen near Susanville (mouth of Piute Creek Canyon); Piute Creek Canyon Comment
  NY283383  Eriogonum strictum G. Schoolcraft 1985-6-12 1422 Lassen Near intersection of Horse Lake Road & Highway 139 1487.4 Comment
  CHSC71247  Eriogonum strictum var. anserinum Vernon H. Oswald; Lowell Ahart 1998-6-4 9147 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  NY762353  Eriogonum strictum var. anserinum J. T. Howell 1934-7-7 12478 Lassen Harvey Valley Comment
  UC1032334  Eriogonum strictum var. anserinum A. Simontacchi 1940-6-30 907 Lassen 2.2 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC267895  Eriogonum umbellatum A. M. Vollmer; L. Beane 1953-7-1 46 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS127724  Eriogonum umbellatum Alejandro Brambila, Michael Dolan 2016-8-2 CA 320 -181 Lassen Head north on unnamed road west of Holbrook Reservoir from Ash Valley Road. Comment
  CAS-BOT-BC267817  Eriogonum umbellatum var. covillei Annie M. Alexander; Louise Kellogg 1942-8-21 3356 Lassen Below Golden Trout Resort, Cottonwood Creek, Cottonwood Lakes, southwest of Lone Pine, Sierra Nevada Comment
  CHSC13632  Eriogonum umbellatum var. modocense M. S. Taylor 1974-7-13 306 Lassen Ca. 150 ft w of Mahogany Lake, ca. 5 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC30618  Eriogonum umbellatum var. modocense Eric Miller 1975-7-8 7 Lassen N. E. slope of Gallatin Peak. 2011 Comment
  GMDRC6954  Eriogonum umbellatum var. modocense J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31429 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
  JEPS114751  Eriogonum umbellatum var. modocense Lowell Ahart, John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC161881  Eriogonum umbellatum var. modocense T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  NY399401  Eriogonum umbellatum var. nevadense N. H. Holmgren 1970-6-25 4375 Lassen North end of Petersen Mountain, near U.S. 395, 8 miles north of junction with California 70 (Hallelujah Junction) 1524.0 Comment
  POM253241  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15190 Lassen 3 mi. east of Westwood. Comment
  RSA0118779  Eriogonum umbellatum var. polyanthum Lowell A. Ahart, John Dittes 2008-6-19 14882 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS56205  Eriogonum ursinum Hilda W. Grinnell 1934-6-2 Lassen Fredonyer Pass 1753 Comment
  CHSC117539  Eriogonum vimineum Lowell Ahart; John Dittes 2016-7-13 21132 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  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
  JEPS22038  Eriogonum vimineum Rimo Bacigalupi with S. Galen Smith and Geo. Bacigalupi Jr. 1957-6-29 5994 Lassen about 1 mi n Sage Hen siding on Southern Pacific R.R. line (just e of U.S. Highway No.395, 7.0 mi n of Madeline) Comment
  POM203843  Eriogonum vimineum J. T. Howell 1934-7-8 12493 Lassen Spaldings Resort; Eagle Lake 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
  UC526153  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 mi s Omira Comment
  UC634595  Eriogonum vimineum Dorothy Tebbe 1929-8-1 18 Lassen along highway 1/4 mi n Susanville Comment
  UC6518  Eriogonum vimineum M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  CAS-BOT-BC262357  Eriogonum vimineum Mrs. H. C. Cantelow 1940-10-5 4177 Lassen N. W. of Johnsville Comment
  CAS-BOT-BC262368  Eriogonum vimineum John Thomas Howell 1934-7-8 12493 Lassen Spalding's, Eagle Lake Comment
  JEPS56155  Eriogonum vimineum Alma U. Ames 1917-10-9 50 Lassen 25 mi n, on Hat Creek Road Mt. Lassen Comment
  SEINET10299461  Eriogonum vimineum W. L. Jepson 1918-8-5 7816 Lassen Madelin Plains 1615 Comment
  SEINET11933856  Eriogonum vimineum N. H. Holmgren, Holmgren, P. K. 1980-1 9493 Lassen Rye Patch Canyon Rd, 3.4 km (2.1m) E of US Hwy 395, 14.5 km (9mi) airline distance SE of Ravendale 1700 Comment
  HSC95194  Eriophorum gracile Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 508 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC300339  Eriophyllum Mike Vasey 1990-6-30 9058 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CAS-BOT-BC300341  Eriophyllum Ella Dales Cantelow 1941-5-22 s.n. Lassen N. of Litchfield. U.S. Hy 395. Lava Country Comment
  CHSC12492  Eriophyllum lanatum Carol Weld 1969-6-20 9 Lassen Dean's Meadow. 1950 Comment
  CHSC64754  Eriophyllum lanatum var. achilleoides Vernon H. Oswald 1995-5-31 6800 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  SEINET4208677  Eriophyllum lanatum var. achilleoides Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9490 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 Comment
  CAS-BOT-BC301530  Eriophyllum lanatum var. integrifolium Louella Bass 1973-5-25 39 Lassen Elysian Valley 1325 Comment
  CHSC25127  Eriophyllum lanatum var. integrifolium Paul Lyman 1970-5-2 27 Lassen Honey Lake Valley; Janesville. Found on Bald mountain, 75 yds. north of cattle guard at south entrance. Comment
  POM66743  Eriophyllum lanatum var. integrifolium Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA221801  Eriophyllum lanatum var. integrifolium Noel Holmgren, John J. Fay, Barton L. Bethers 1970-6-25 4376 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  UC1118288  Eriophyllum lanatum var. integrifolium H. P. Hagge 1929-9-11 18 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. (Mb.1) 1828 Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  CHSC91300  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
  JEPS124541 Image available Erodium cicutarium J. Yamanaka 1965-7-12 121 Lassen Highway 395, 15 miles N. of junction of Calif. 704 and US 395 Comment
  UCD80866  Eryngium mathiasiae Robert E. Preston 2007-7-8 2569 Lassen Big Valley Mtns, 0.4 mi NE of Big Valley Summit, along Hwy 299. 1396 Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  JEPS53558  Erysimum capitatum var. capitatum Frances D. Payne 1929-7-12 93 Lassen on ridge above Lost Lake; Warner Mts. 2286 Comment
  UC773887  Erysimum capitatum var. capitatum L. R. Short and B. H. Short 1936-6-15 S- 437 Lassen Longs Well Lassen Forest 1712 Comment
  JEPS118156  Erysimum repandum Dean W. Taylor 2009-5-21 20607 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air mi E of Round Valley Reservoir 1706 Comment
  CAS-BOT-BC55197  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  CHSC91311  Erythranthe arvensis Lowell Ahart; John Dittes 2005-6-1 11900 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  CHSC106222  Erythranthe guttata Arthur C. Barrett 1915-6-3 14 Lassen Laufman Ranger Station. 1463 Comment
  CHSC118855  Erythranthe guttata L. P. Janeway; B. Castro 2015-6-5 11770 Lassen Great Basin, Modoc Plateau. Along County Road 512 16.9 road-km south from Surprise Valley Road towards Tuledad Canyon; in a small northwestern drainage into Post Canyon. 1837 Comment
  CHSC12460  Erythranthe guttata Robert W. Severin 1969-6-26 32 Lassen Murrer's Meadow, west side in moist grassy soil next to irrigation ditch; 2 mi ese E.L.B.S. Comment
  CAS-BOT-BC151473  Erythranthe latidens James Jokerst 1983-7-23 1872 Lassen Grasshopper Valley Quad., near Madeline Plains 1614 Comment
  CHSC68876  Erythranthe lewisii Vernon Oswald; Lowell Ahart 1997-6-24 8616 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N42, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SD7073  Erythranthe lewisii Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  SEINET3836920 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Prattville, Clear Creek 1524 Comment
  SFV18615  Eschscholzia caespitosa T. W. Nelson, J. P. Nelson 1990-7-14 8777 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  CHSC7770  Eschscholzia californica Beverley J. Wise 1969-5-17 72 Lassen City limits of Susanville on Hwy 139. 1310 Comment
  RSA149124  Eschscholzia californica var. crocea I. L. Wiggins, Dorothy B. Wiggins 1961-6-16 16531 Lassen Along Highway 299, overlooking Big Valley 1250 Comment
  JEPS117958  Eucephalus breweri Zoya Akulova-Barlow Sep 2006 Lassen Sierra Nevada, Dyer Mountain Comment
  CHSC45999  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, .6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin). On and about driveways in front of house. 1280 Comment
  UC1313019  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen 4 mi. s.w. Adin (Frosty Acres Ranch at end of Albaugh Rd., 0.6 mi. w. of its junction w/ Bassett Rd. (ca. 2 mi. s. of U.S. Hwy. 299)); n. Lassen Co., Frosty Acres Ranch 1280 Comment
  SFV1478  Euclidium syriacum B. J. McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 miles west of its junction with Bassett Road (about 2 miles south of U. S. Highway 299 and 4 miles southwest 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
  UCD142769  Euphorbia serpillifolia R. N. Raynor 1938-7-16 s.n. Lassen Honey Lake Valley. Comment
  UCD142787  Euphorbia serpillifolia J. M. Tucker 1950-7-25 1974 Lassen Road from Pittville, 35 miles northwest of Susanville. Comment
  CHSC115563  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2015-7-13 20312 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS97418  Euphorbia spathulata Vernon H. Oswald and L. Ahart 1995-6-19 6881 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  CAS-BOT-BC310646  Euthamia occidentalis G. Schoolcraft 1997-8-20 2698 Lassen On Susan River behind BLM office in Susanville 1264 Comment
  CAS-BOT-BC278430  Festuca idahoensis John Thomas Howell 1934-7-8 12496 Lassen Spalding's, Eagle Lake Comment
  CDA42998  Festuca idahoensis L. Ahart, John Dittes 2008-6-19 14880 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
  CHSC27575  Festuca idahoensis Robert Schlising 1978-7-11 3316 Lassen S of Eagle Lake at Papoose Creek. 1584 Comment
  CHSC99482  Festuca idahoensis Lowell Ahart; John Dittes 2008-6-19 14880 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
  JEPS127719  Festuca idahoensis Alejandro Brambila, Michael Dolan 2016-7-28 CA 320 -174 Lassen 171 on Likely Mtn. After the second tight switchback the population is off the road downslope. Comment
  POM203052  Festuca idahoensis J. T. Howell 1934-7-6 12448 Lassen Harvey Valley 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
  CHSC117218  Festuca microstachys var. microstachys Lowell Ahart; John Dittes 2016-6-7 21002 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UCD66162  Festuca occidentalis L. Whitney 1935-6-27 3337 Lassen Lassen National Forest. Camp 10, Fruit Grower's Supply Company. Comment
  UC53432  Festuca pratensis M. S. Baker and Frank Nutting 1894-6-30 Lassen Big Valley Comment
Read comments
Jun 24 2009
  CAS-BOT-BC278932  Festuca rubra John Thomas Howell 1934-7-6 12458 Lassen Harvey Valley Comment
  CAS-BOT-BC278937  Festuca rubra George W. Gillett 1957-7-28 923 Lassen Lassen Volcanic National Park. Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake 1859 Comment
  UC1024686  Festuca rubra Leo Whitney 1933-8-3 2159 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  JEPS19565  Floerkea proserpinacoides Milo S. Baker and F. P. Nutting 1894-6-15 Lassen Meadow in the Big Valley Mountains situated nw of Big Valley in which Bieber and Nubieber are located, northwestern Lassen County Big Valley; Big Valley Mountains Comment
  JEPS95090  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1997-6-24 8650 Lassen s of Susanville just s of small ond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout Red Rock Lookout; crest of Diamond Mountain 2249 Comment
  UCR18732  Frasera albicaulis Frank C. Vasek 1975-7-11 750711- 05 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  RSA523910  Frasera albicaulis Gordon H. True Jr. 1936-6-25 539 Lassen East of Harvey Ranger Station, Harvey Valley. 1768 Comment
  HSC26684  Fritillaria atropurpurea D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19220 Lassen 3 mi. N of Westwood Comment
  RSA59761  Fritillaria pudica E. K. Balls 1950-5-18 14768 Lassen Above Ash Creek Public Camp., off rd. from Adin to Madeline. 1616 Comment
  HSC75888  Galium aparine D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19278 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC1523745  Galium bolanderi Gary Schoolcraft 1981-7-21 543 Lassen ne Pittville (along Hwy 299) 1249 Comment
  JEPS107800  Galium boreale subsp. septentrionale Lowell Ahart, John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, 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
  POM69200  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1226043  Galium multiflorum Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8471 Lassen 50 mi se Susanville 1371 Comment
  UC28233  Galium trifidum M. S. Baker and Frank Nutting 1894-7-28 Lassen Bridge Creek Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UC1122615  Gayophytum humile A. Simontacchi 1940-6-6 821 A Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1122618  Gayophytum racemosum A. Simontacchi 1940-6-6 821 Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET4172075  Gayophytum ramosissimum M. J. Williams 1974-7-26 74 - L-32 Lassen 2 mi. west of Hallelujah Junction, south of Hwy 70 1494 Comment
  HSC93314  Gentiana calycosa Vernon H. Oswald, L. Ahart 1996-8-1 8119 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  UC1037272  Geranium viscosissimum Leo Whitney 1934-7-10 1766 Lassen ca 14 mi w Eagle Lake (near Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  CHSC30615  Geranium viscosissimum var. nervosum L. Maslin 1975-7-1 2 Lassen Corn lily mdw. over the ridge s of Deans mdw. 1920 Comment
  RSA0029585  Geranium viscosissimum var. nervosum Bruce Bartholomew, B. Anderson 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC459363  Geum macrophyllum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49425 Lassen Elysian Valley, west of Janesville, Sierra Nevada 1325 Comment
  RSA470172  Gilia brecciarum Christopher Davidson 1975-6-7 2757 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC71129  Gilia inconspicua Vernon H. Oswald; Lowell Ahart 1998-5-22 9107 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. On roadside banks. 1371 Comment
  SEINET11268345  Gilia inconspicua Vernon H. Oswald, Lowell Ahart 1998-5-22 9107 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle.; 0 1372 Comment
  NY964494  Gilia inconspicua var. sinuata W. W. Eggleston 1911-5-20 6743 Lassen Vicinity of Doyle Station 1290 Comment
  RSA104235  Gilia malior Verne Grant, Alva Grant 1956-5-17 9798 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  CHSC64800  Gilia salticola Vernon H. Oswald 1995-5-31 6816 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 3.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC25915  Gilia sinuata K. R. Stern 1967-7-1 2437 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  RSA469630  Gilia sinuata Christopher Davidson 1975-6-7 2756 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1609120  Gilia sinuata Vernon H. Oswald and Lowell Ahart 1993-6-14 5545 Lassen ca. 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1), at Sandy Beach on the w shore Eagle Lake); w shore Eagle Lake, at Sandy Beach 1566 Comment
  RSA126642  Glyceria borealis H. S. Yates 1936-8-12 6083 Lassen McKenzie Meadow. 1524 Comment
  CHSC99290  Gnaphalium palustre Lowell Ahart; John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  HSC29999  Gnaphalium palustre D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19276 Lassen Harvey Valley near Cone Springs Comment
  RSA0105586  Gnaphalium palustre Lowell Ahart, John Dittes 2013-7-22 18861 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1483835  Gnaphalium palustre G. Schoolcraft 1980-7-22 Lassen nw of BLM fire station (along Hwy 395) 1630 Comment
  CHSC106078  Gratiola ebracteata Lowell Ahart; John Dittes 2010-7-31 17012 Lassen Bottom of small wash, 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
  UC1136429  Grayia spinosa C. W. Hanks 1934-9-25 88 Lassen near the Plumas Nat'l Forest Long Valley; Sierraville Quad., Long Valley Comment
  UC1136436  Grayia spinosa E. Sawyer 1935-6-27 226 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UC1537382  Grayia spinosa Gordon H. True Jr. 1936-6-26 551 Lassen flats s.e. Standish; Honey Lake Valley 1219 Comment
  JEPS124633 Image available Grindelia nana Laurie Hooker 1965-7-13 117 Lassen 1.4 miles past junction of A-2 and 299. Comment
  JEPS124632 Image available Grindelia nana Himayat H. Naqvi 1965-7-13 164 Lassen Near pit river overflow number 7-05. Comment
  UC1583961  Gymnosteris parvula G. Schoolcraft 1990-4-16 2011 Lassen about 15 mi ne of Ravendale 1798 Comment
  UC1609450  Gymnosteris parvula Vernon H. Oswald and Lowell Ahart 1993-6-3 5485 Lassen between Susanville and Poison Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi n of its jct w Lassen 21 (32N02) to Eagle Lake, on w edge of Pine Creek Valley); Pine Creek Valley, Champs Flat Road 1731 Comment
  UCD98139  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville. Comment
  CAS-BOT-BC388468  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Janesville Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  SEINET3928294  Hackelia californica Anthony Baniaga 2011-7-9 440 Lassen Lassen National Forest. Windy Hollow. Pine Creek Valley quadrangle.; 0 1720 Comment
  UC699734  Hackelia californica Farris Farris 1936-6-15 Lassen Eagle Lake Summit 1981 Comment
  CAS-BOT-BC231156  Hackelia cusickii Mrs. A S. Baldwin 1928-5-1 s.n. Lassen Coyote Flat, over ridge from Dixie Village Comment
  UCD98893  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  UCD98896  Halogeton glomeratus Collector Unknown 1950-9-1 s.n. Lassen vicinity of Herlong. Comment
  CAS-BOT-BC305408  Helianthus annuus Louella Bass 1980-8-3 s.n. Lassen Standish Comment
  CHSC7647  Helianthus annuus Beverley J. Wise 1948-8-23 21 Lassen 5 mi. N.W. of Susanville of Las. Co. Rd. 201. 1371 Comment
  JEPS78105  Helianthus annuus G. W. Zamzow 1972-7-18 87 Lassen beside Hwy 395 16.8 mi s intersection with Highway 36 1280 Comment
  CAS-BOT-BC305409  Helianthus annuus John Thomas Howell; G. H. True 1973-7-31 50143 Lassen Janesville 1295 Comment
  JEPS124645 Image available Helianthus annuus Michael D. Fleschner 1965-7-12 1965 -110 Lassen 2 miles south of MIlford, on Hwy 395. Comment
  CDA18385  Helianthus bolanderi G. D. Barbe 1978-8-31 2424 Lassen Modoc National Forest; Hwy 139, NW of Willow Creek Guard Station, Modoc National Forest, 3.6 mi SE of Co Rd A2 to Bieber, 6 mi S of Adin (Modoc Co.). Comment
  POM253276  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen Midway between Mapes and Secret Valley on Hwy 395. 1372 Comment
  CHSC92717  Hemizonella minima L. P. Janeway; B. Castro 2005-7-10 8481 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  POM360351  Hemizonia lobbii J. T. Howell 1934-7-3 12380 Lassen Big Valley, near Bieber Comment
  CHSC77177  Heracleum lanatum G. Schoolcraft 1997-7-30 2618 Lassen W slope of Dimond Mtn. 1950 Comment
  UC1609376  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1993-5-12 5377 Lassen 3.5 mi nw of A21 to Westwood (Canal crossing Highway 44, on the n side of the road and on the e side of the canal) 1729 Comment
  RSA59751  Hesperochiron californicus E. K. Balls 1950-5-19 14777 Lassen 17.5 miles west of Madeline on road from Adin. 1677 Comment
  CHSC65038  Hesperolinon micranthum Vernon H. Oswald; Lowell Ahart 1995-7-5 6957 Lassen Modoc Plateau. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. 1383 Comment
  CHSC66391  Hesperolinon micranthum Vernon H. Oswald; Lowell Ahart 1996-6-17 7796 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hy. 36 ca. 7 mi W of Susanville. 1420 Comment
  POM87378  Hesperolinon micranthum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CAS-BOT-BC310910  Heterotheca villosa Margaret Williams 1974-7-27 74- 61 -61 Lassen West of Hwy 395 and south of Hwy 70. Near Hallelujah Junction 1493 Comment
  UC1136852  Hieracium albiflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen <National> Forest 1737 Comment
  UC135018  Hieracium albiflorum T. S. Brandegee 1892-7-2 s. n. Lassen Susanville Comment
  CAS-BOT-BC318713  Hieracium horridum Wm. Bridge Cooke 1938-9-17 11703 Lassen Canyon below Horse Camp, Mount Shasta 2133 Comment
  UC485536  Hieracium horridum Franklin P. Nutting 1984-7-30 Lassen Silver Lake Silver Lake Comment
  CAS-BOT-BC318714  Hieracium horridum Wm. Bridge Cooke 1938-8-18 11492 Lassen Horse Camp slopes, Mount Shasta 2514 Comment
  UCD18951  Hieracium nudicaule Raymond D. Ratliff 1965-8-5 43 Lassen Lassen National Forest, Harvey Valley Allot. (HV 20-14 'area'). 1725 Comment
  CHSC66720  Hieracium scouleri var. nudicaule Vernon H. Oswald; Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. Near the road. 2011 Comment
  CHSC75503  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1999-6-9 9737 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395, springy marsh surrounded by sagebrush scrub. 1353 Comment
  UC20698  Hippuris vulgaris J. Burtt Davy Jun 17 1897-Jun 24 1897 3334 Lassen Honey Lake Valley, Honey Lake 1219 Comment
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  UC1024652  Hordeum brachyantherum subsp. brachyantherum Leo Whitney 1933-8-2 2202 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  UC53617  Hordeum brachyantherum subsp. brachyantherum M. S. Baker and Frank Nutting 1894-7-4 Lassen Dixey Valley Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  CHSC7694  Hordeum jubatum Beverley J. Wise 1969-6-4 131 Lassen 10 mi. east of Susanville on Hwy 395, Janesville cut in Hwy. 1310 Comment
  UC53726  Hordeum jubatum J. Burtt Davy 1897-6-17 Lassen Reus Comment
  UCD85908  Hordeum marinum subsp. gussoneanum L. Whitney 1933-8-12 s.n. Lassen Black's Lake. Comment
  CAS-BOT-BC284896  Hordeum murinum subsp. leporinum John Thomas Howell 1973-7-10 49801 Lassen Susanville 1295 Comment
  RSA0092310  Horkelia fusca Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31431 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  CHSC36189  Horkelia fusca subsp. parviflora M. S. Taylor; B. Hammond 1982-7-8 4789 Lassen Along spur rd ca. 1/3 mi w of Scott Rd, ca. 1.5 mi ne of Beckwourth Pass. 1463 Comment
  CHSC60848  Horkelia fusca subsp. tenella Vernon H. Oswald; Lowell Ahart 1993-6-28 5577 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 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
  CAS-BOT-BC143981  Horkelia fusca var. tenella Lassen 1927 G. S. Crew 1927-6-25 37 Lassen Norval Flat, Lassen National Forest 1747 Comment
  UC860563  Horkelia tridentata subsp. tridentata C. L. Hitchcock 1940-5-26 6597 Lassen ca 12 mi n Fall River (on Fall River) Comment
  NY170060  Hutchinsia procumbens A. Tiehm 1980-5-29 5749 Lassen N end of Honey Lake Valley, just N of Hot Springs, 1.1 air mi NNW of Wendel. 1231.4 Comment
  UC614681  Hydrophyllum capitatum var. alpinum L. Constance 1938-6-10 2325 Lassen 0.5 mi w Fredonyer Pass 1676 Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  CDA36537  Hypericum formosum var. scouleri T. C. Fuller 1959-7-6 4304 Lassen Hwy. 36, about 1 mi. north of Westwood. 0 Comment
  CAS-BOT-BC401308  Hypericum scouleri Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC401309  Hypericum scouleri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49436 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC93315  Hypericum scouleri Vernon H. Oswald, L. Ahart 1996-8-1 8127 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  CHSC81032  Iliamna bakeri Vernon H. Oswald 2001-7-14 10050 Lassen Hwy 139 at the 11 mile post between Susanville and Eagle Lake. 1706 Comment
  SDSU7494  Iliamna bakeri D. F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc National Forest 1829 Comment
  CHSC6203  Ipomopsis aggregata subsp. formosissima P. Balch 1955-7-17 Lassen Eagle Lake. Mouth of Papoose Creek, near Gallatin Beach. 1561 Comment
  CAS-BOT-BC61857  Isoetes nuttallii Alice Eastwood; John Thomas Howell 1940-6-11 7984 Lassen Big Valley Mts. Comment
  CAS-BOT-BC61865  Isoetes nuttallii John Thomas Howell 1974-7-10 50537 Lassen Elysian Valley 1325 Comment
  CHSC27587  Iva axillaris subsp. robustior Robert A. Schlising 1978-7-15 3318 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  UC73973  Iva axillaris subsp. robustior J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Song Valley; Honey Lake Valley Comment
  HSC77273  Ivesia paniculata Teresa Prendusi 1980-7-14 Lassen Ash Valley, along Ash Valley Rd., 15 mi. W of Madeline 1549 Comment
  GMDRC7742  Juncus balticus subsp. ater J. M. Andre, G. Clifton 1993-6-11 33423 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  JEPS127272  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2016-7-13 21140 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
  UC1137590  Juncus confusus A. Simontacchi 1940-7-3 918 Lassen 3.4 mi wsw Harvey Mtn. Lookout; Halls Flat Quad. 1828 Comment
  UC2553  Juncus ensifolius Baker and Nutting 1894-7-25 Lassen Willow Creek Comment
  JEPS87448  Juncus hemiendytus var. abjectus Vernon H. Oswald and Lowell Ahart 1993-6-3 5481 Lassen between Poison Lake and Susanville (s. side of Pine Creek Valley, Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake); Pine Creek Valley 1725 Comment
  SEINET3507366 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake Comment
  SEINET3507367 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake 1524 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
  CHSC96731  Juncus nevadensis Gordon Leppig 1998-7-12 946 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow a complex. 1970 Comment
  UC1133741  Juncus nevadensis A. Simontacchi 1940-6-7 894 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1142942  Juncus nevadensis A. L. Hormay 1941-6-18 3 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC1594640  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5124 Lassen 1.3 mi n of Hwy 44 and McCoy Flat Reservoir (Swamp on Bridge Creek, w of Cinder Pit on the logging road paralleling the e side of Bridge Creek, between Old Station and Susanville) 1719 Comment
  JEPS103213  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen North slopes of Skedaddle Mountains 1828 Comment
  UCD141628  Juncus nevadensis G. Schoolcraft 1993-6-21 2301 Lassen Skedaddle Mountains. 1828 Comment
  JEPS121289  Juncus nevadensis var. nevadensis Lowell Ahart, John Dittes 2013-7-23 18906 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  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
  HSC103607  Juncus orthophyllus Thomas W. Nelson, Jane Nelson 1985-8-10 8002 Lassen Along north side of Silver Lake 1829 Comment
  UC1133725  Juncus sphaerocarpus A. Simontacchi 1940-6-5 815 A Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC1601819  Juncus tenuis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixis Mts. Dixie Mts. Comment
  CDA39253  Juncus xiphioides Gordon Leppig 1998-7-12 945 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  CHSC3494  Juniperus californica Roger Jaegel 1966-5-14 152 Lassen Located twenty-two miles north of Susanville, along the bank of Eagle Lake at C. S. C. Biological Station. Comment
  CHSC5037  Juniperus occidentalis L. B. Barlow 1967-7-16 131 Lassen Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC5076  Juniperus occidentalis A. W. Harvilik 1967-6-23 9 Lassen Ca. 50 ft from Eagle Lake Biology Station. 1554 Comment
  SEINET10899767  Juniperus occidentalis Jeffrey Huber 1971-6-2 Huber 130 Lassen Approx. 30 mi N of Susanville, on Calif. Hwy 139, in basalt; Pinus-Artemesia-Juniper assoc. 1646 Comment
  SEINET5334956  Juniperus occidentalis T. Kerstetter 1956-4-27 s.n. Lassen about 2 miles north of Susanville, on U.S. highway 395 1524 Comment
  UCR4282  Juniperus occidentalis var. australis Frank C. Vasek 1965-8-31 650831- 06 Lassen 3.8 mi west of the Ranger Station at Susanville Comment
  RSA719706  Juniperus occidentalis var. occidentalis Michael A. Vincent, K. Levings 2006-7-29 12922 Lassen Along Rt. 395 pull-off, 3.1 miles north of Rt. 70, 7.7 miles north of Sierra County line Comment
  UC1924194  Juniperus occidentalis var. occidentalis Debra Valov 2005-8-20 2005236 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CHSC65119  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1995-7-24 7133 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  CHSC66402  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1996-6-17 7768 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  POM68597  Kelloggia galioides Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  SEINET10869776  Kelloggia galioides Mary Susan Taylor 1974-1 Taylor 273 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  NY539721  Kochia americana G. Schoolcraft 1998-9-14 2808 Lassen Honey Lake Valley northwest of Duck Lake 1219.2 Comment
  CAS-BOT-BC180850  Kochia scoparia Louella Bass 1981-9-29 s.n. Lassen Standish Comment
  UC1024950  Koeleria macrantha Leo Whitney 1935-6-28 3316 Lassen ca 13 mi w of n end Eagle Lake (Squaw Valley); , w of n end Eagle Lake Comment
  UC1136816  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-7-12 F 205 Lassen Grass Valley; Lassen National Forest, Grass Valley 1699 Comment
  UCD86011  Koeleria macrantha L. Whitney 1935-6-24 s.n. Lassen Squaw Valley. Comment
  UC891450  Kyhosia bolanderi A. A. Heller 1937-9-1 15342 Lassen about a mile e of Westwood 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
  UC1924230  Lagophylla ramosissima Debra Valov 2005-8-20 2005216 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC341480  Lagophylla ramosissima Margaret Williams 1974-7-27 74 -L-62 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SEINET14188959 Image available Lamium amplexicaule L. L. Stitt 1984-5-25 s.n. Lassen Susanville Comment
  CDA20356  Lappula redowskii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CAS-BOT-BC204905  Lathyrus A. M. Vollmer; L. Beane 1953-7-1 100 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC92742  Lathyrus nevadensis var. nevadensis L. P. Janeway 2005-7-3 8451 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
  CAS-BOT-BC321496  Layia glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, S of Susanville. Comment
  CAS-BOT-BC321491  Layia glandulosa Milo S. Baker 1936-6-16 8360 Lassen About 30 mi N of Susanville along Hwy 395. Comment
  RSA170169  Lemna minor W. L. Jepson 1918-8-16 8000 Lassen Merrillville 1524 Comment
  HSC95338  Lemna minuta Gordon Leppig, J. Cromwell 1997-7-27 621 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC71871  Lepidium appelianum Vernon H. Oswald; Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Roadside. 1258 Comment
  CAS-BOT-BC89721  Lepidium latifolium G. Schoolcraft 1987-9-24 1780 Lassen Along Riverside Drive in Susanville. 1310 Comment
  CDA37688  Lepidium latifolium Robin Breckenridge 2004-7-1 s.n. Lassen East of Susanville. 0 Comment
  CHSC111251  Lepidium perfoliatum L. P. Janeway; B. Castro 2012-7-2 10936 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  CHSC36444  Lepidium perfoliatum Jeffrey R. Peek 1982-6-1 22 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd. Ca. 10 yd e of Ravendale Rd. Comment
  UC1143000  Lepidium perfoliatum August L. Hormay 1934-5-15 Lassen nw of Black Mt.; Lassen National Forest, Forest and Range Expt. Sta. 1584 Comment
  UC1123943  Leptodactylon pungens E. Sawyer 1935-6-27 230 Lassen Long Valley; Sierraville Quad., Long Valley Comment
  JEPS126521  Leptosiphon bolanderi Lowell Ahart, John Dittes 2016-6-7 20979 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC68896  Leptosiphon ciliatus Vernon Oswald; Lowell Ahart 1997-6-24 8605 .1 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. (29N10). 1655 Comment
  CHSC92716  Leptosiphon ciliatus L. P. Janeway; B. Castro 2005-7-10 8480 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  POM74003  Leptosiphon ciliatus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CHSC60372  Leptosiphon harknessii Mary Ann Showers 1992-6-12 2518 Lassen Lassen Volcanic National Park. Meadow, Butte Lake. 1859 Comment
  SJSU6034  Leptosiphon harknessii J. W. Tilden 1960-6-27 1507 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  CHSC68773  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1997-5-27 8509 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  HSC30081  Leucocrinum montanum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19264 Lassen Harvey Valley near Cone Springs Comment
  JEPS87460  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  UCR201583  Leucocrinum montanum Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  CAS-BOT-BC508366  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mile north Madeline, 8.8 mile south Modoc Co. line 1676 Comment
  HSC38587  Leucocrinum montanum J. P. Smith, J. O. Sawyer 1971-5-23 Lassen 3 mi. N of junction of Hwy. 139 and turnoff to Thermo Comment
  SEINET12044967  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek Comment
  CHSC61168  Lewisia pygmaea Vernon H. Oswald; Lowell Ahart 1993-5-12 5387 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
  CHSC64848  Lewisia rediviva Vernon H. Oswald 1995-6-26 6946 Lassen Modoc Plateau. Coyote Flat on Hunzinger Flat Rd. (FS 38N04) 5.6 mi s of its junction with Ash Valley Rd. (Lassen 527). 1783 Comment
  UC803892  Leymus G. L. Stebbins Jr. 1949-8-6 4007 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  UC803946  Leymus G. L. Stebbins Jr., P. Dansereau, K. Narayan, and C. McMillan 1949-8-6 4006 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  JEPS126490  Leymus cinereus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-14 CA 350 -76 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the Skedaddle Road, head uphill to the end of private property squares. Comment
  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
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  RSA126617  Leymus condensatus H. S. Yates 1936-8-12 6086 Lassen McKenzie Meadows 1524 Comment
  RSA647531  Leymus triticoides Marion P. Harthill 1972-6-16 778 Lassen Doyle 1372 Comment
  UC1037138  Leymus triticoides Leo Whitney 1925-6-28 3364 Lassen Bieber Comment
  UCD87762  Leymus triticoides L. G. Stiles 1927-6-2 s.n. Lassen Milford. Comment
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  HSC15584  Lilium pardalinum subsp. pardalinum Fred J. Kindel 1955-7-8 Lassen Susan River Comment
  HSC15585  Lilium pardalinum subsp. pardalinum Fred J. Kindel 1955-7-8 Lassen Susan River Comment
  CAS-BOT-BC246146  Limosella aquatica Malcom A. Nobs; S. Galen Smith 1949-7-20 1046 Lassen Bieber, along Highway 299 Comment
  CHSC112422  Limosella aquatica Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18755 Lassen Near a drainage filled with dirt from construction of a pond, about 50 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60855  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1993-6-28 5602 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  JEPS121274  Limosella aquatica Lowell Ahart, John Dittes 2013-7-23 18889 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
  UC1101431  Limosella aquatica Malcolm A. Nobs and S. Galen Smith 1949-7-20 1046 Lassen Bieber Comment
  JEPS114858  Linanthus bolanderi Lowell Ahart, John Dittes 2008-6-19 14892 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  RSA0037003  Linanthus bolanderi Lowell A. Ahart, John Dittes 2008-6-19 14892 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC52823  Linanthus bolanderi M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. Comment
  CHSC89741  Linanthus harknessii L. P. Janeway 2004-6-26 8147 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
  UC1924245  Linum lewisii var. lewisii Debra Valov 2004-6-3 2004237 Lassen Hwy 139 c. 1 km S of Junction of County A2 1356 Comment
  POM107663  Listera convallarioides Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  SEINET10483062  Lithophragma brevilobum Mary Susan Taylor 1974-5-4 Taylor 228 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CAS-BOT-BC435429  Lithophragma glabrum Louella Bass 1974-4-16 EV 149 Lassen Elysian Valley; Sierra Nevada 1325 Comment
  CHSC60688  Lithophragma glabrum Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5273 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CAS-BOT-BC435428  Lithophragma glabrum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49166 Lassen Elysian Valley northeast of Janesville; Sierra Nevada 1325 Comment
  CHSC11773  Lithophragma tenellum Wayne O. Baum 1971-6-15 71 -1 Lassen South side of fire trail approx. 100 ft. from Rd. 5 at extreme S. E. corner of Gallatin Peak. 1920 Comment
  CHSC68766  Lithophragma tenellum Vernon H. Oswald 1997-5-27 8503 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA0037174  Lithospermum arvense Lowell A. Ahart, John Dittes 2012-7-11 18351 Lassen North edge of a farmed field, on the south side of the highway, about 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittville, 3955 feet east of Lassen-Shasta County Line, Fall River Valley. 1205 Comment
  HSC69589  Lithospermum ruderale Gary Schoolcraft 1979-6-19 67 Lassen W of Post Camp on N side of main road 1829 Comment
  SEINET8588548  Lomatium austiniae 2015-5-11 NV 030 -1054 Lassen Constantia Allotment. HWY 395 into CA, past Red Rock fire entrance, turn right onto dirt road entrance before reaching the bridge, drive past two cattle guards, site along ATV road. 1510 Comment
  CHSC64858  Lomatium bicolor var. leptocarpum Vernon H. Oswald; Lowell Ahart 1995-6-19 6901 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 8.4 mi e of Hwy. 395. 1444 Comment
  POM260287  Lomatium bicolor var. leptocarpum C. L. Hitchcock 1940-5-26 6648 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CAS-BOT-BC211117  Lomatium canbyi B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6552 Lassen Just S of Ravendale 1580 Comment
  UC1137733  Lomatium dissectum var. multifidum L. R. Short 1936-5-12 S- 348 Lassen Lassen Forest, Burgess Spring Experimental Range 1834 Comment
  RSA271913  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  NY1160625  Lomatium macrocarpum N. H. Holmgren 1980-7-3 9487 Lassen U.S. Highway 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  RSA339995  Lomatium macrocarpum Noel Holmgren, Patricia Holmgren 1980-7-3 9487 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  SEINET10545797  Lomatium macrocarpum David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17756 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
  RSA517344  Lomatium nevadense Barbara Ertter, Gary Schoolcraft 1987-6-16 s.n. Lassen Skeedaddle Mountains on NE side of Honey Lake 2134 Comment
  CHSC71065  Lomatium nevadense var. nevadense Vernon H. Oswald; Lowell Ahart 1998-5-22 9120 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  JEPS118212  Lomatium nevadense var. nevadense Dean W. Taylor 2004-5-14 19069 Lassen Ash Valley, County Road 527 (Forest Road 39N08) ca. 0.5 miles South of crossing of Ash Creek 1539 Comment
  SEINET5333498  Lomatium nevadense var. nevadense K. Chambers 2002-4-21 6347 Lassen Highway 395, 28 mi. S. of Ravendale, n. of Honey Lake. Comment
  CHSC108004  Lomatium nudicaule Lowell Ahart; John Dittes 2011-6-20 17497 Lassen About 40 yards east of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1609377  Lomatium nudicaule Vernon H. Oswald and Lowell Ahart 1993-6-28 5617 Lassen s.-s.e. flank Harvey Mt. (n.-n.e. of Burgess Meadow, n.e. of Poison Lake, n. of Hwy. 44 on Rd. 33N06) 1798 Comment
  CHSC72293  Lomatium plummerae L. P. Janeway; Glenn Clifton 1998-7-8 5721 Lassen Ridgetop saddle about 2.5 mi northwest of Red Rock; at junction of Roads 28N08,19N10, 213, and 28N55. Top of north-facing Wyethia opening in open yellow pine forest. 1988 Comment
  JEPS25531 Image available Lomatium ravenii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7145 Lassen 2 mi. s. Ravendale 1615 Comment
  UC1177543 Image available Lomatium ravenii Peter H. Raven with Otto T. Solbrig 1958-6-17 13287 Lassen 1.8 mi. s. Ravendale (along U.S. Hwy. 395) Comment
  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
  CHSC13733  Lomatium triternatum var. macrocarpum C. Freeman 1973-6-27 7 Lassen Collected roadside ca. 1 mi n of the road crossing. Comment
  JEPS88234  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7818 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, at 6.0 mi. post e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC15724  Lotus oblongifolius var. oblongifolius M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake 1524 Comment
  UC862219  Lotus purshianus var. purshianus A. A. Heller 1938-7-28 15300 Lassen just e Westwood Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  CHSC91929  Lupinus andersonii L. P. Janeway; B. Castro 2005-7-10 8482 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  SEINET7123961 Image available Lupinus andersonii E. A. Bourdo Jr. 1972-1 s.n. Lassen Lassen National Park Comment
  CHSC61618  Lupinus arbustus Arthur C. Barrett 1915-6-19 30 Lassen Near Laufman Ranger Station. 1447 Comment
  CHSC68863  Lupinus arbustus Vernon Oswald; Lowell Ahart 1997-6-24 8635 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  SEINET5327708  Lupinus arbustus J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA Comment
  NY732867  Lupinus arbustus subsp. calcaratus K. Morris 1973-5-25 211 Lassen Collected 9.6 miles north of Milford on US 395 Comment
  CAS-BOT-BC196341  Lupinus argenteus var. argenteus Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 3 1/2 miles S. of Secret Valley C.C.C. Camp, U.S. Hy. 395 Comment
  CAS-BOT-BC208732  Lupinus argenteus var. heteranthus E. K. Balls 1950-5-9 15948 Lassen Along roadsides 6 miles south of Doyle. 1371 Comment
  CAS-BOT-BC208737  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21501 Lassen Reserboir above Grasshopper Valley, Lassen Forest 1500 Comment
  CAS-BOT-BC208745  Lupinus argenteus var. heteranthus John Thomas Howell 1974-7-8 50461 Lassen Susanville - Sierra Nevada 1295 Comment
  CHSC909  Lupinus argenteus var. heteranthus L. Harman 1946-6-22 Lassen Webb's camp, Eagle Lake. 1554 Comment
  CHSC93684  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2005-6-1 11873 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, 3.8 miles (air) northwest of Hallelujah Junction. 1448 Comment
  NY736922  Lupinus argenteus var. heteranthus N. H. Holmgren 1978-6-11 8925 Lassen Painters Flat road, 31.2 km (19.4 mi) east of Ravendale and 25 km (15.5 mi) airline distance 1800 Comment
  NY736928  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6019 Lassen 3 miles west of Doyle Comment
  NY736931  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of Doyle, along Highway 395 Comment
  NY736932  Lupinus argenteus var. heteranthus J. Huber 1971-6-2 140 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  RSA160042  Lupinus argenteus var. heteranthus David B. Dunn 1956-7-3 11919 Lassen On Highway 395. Comment
  UC1129768  Lupinus argenteus var. heteranthus A. Simontacchi 1940-6-28 721 Lassen 5.7 mi s Eldridge; Lassen National Forest, Halls Flat Quad. Comment
  UC1776671  Lupinus argenteus var. heteranthus G. Schoolcraft 1993-6-10 2296 Lassen Along Clark's Valley Road w. of Clark's Valley Ranch 1859 Comment
  UC585203  Lupinus argenteus var. heteranthus E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1757 Lassen e Red Rock; e of Red Rock 1615 Comment
Read comments
Nov 4 2011
  UC865087  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 Lassen just outside of Johnstonville ( along U.S. Hwy 395) Comment
  UCD106809  Lupinus argenteus var. heteranthus R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  NY746960  Lupinus breweri H. D. D. Ripley 1943-6-13 5709 Lassen 10 miles south of Milford 1768 Comment
  HSC82218  Lupinus caudatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6003 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  SD43491  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford 1264 Comment
  SEINET10452632  Lupinus caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  SEINET10490607  Lupinus caudatus subsp. caudatus Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 863 Lassen Collected on road bank 24 mi n of calif. State line on hwy 395. Comment
  UCR18740  Lupinus corymbosus Frank C. Vasek 1975-7-11 75011- 21 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UCD108200  Lupinus latifolius var. columbianus Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mounains, Modoc National Forest, northeastern part of county (ca. 18. miles airline southeast of Likely). 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
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  CHSC60355  Lupinus lepidus var. lobbii Mary Ann Showers 1992-6-27 2602 Lassen Lassen Volcanic National Park. Pumice Flat northwest of Crescent Crater. 2194 Comment
  UC1138211  Lupinus lepidus var. lobbii George A. Fischer and Irwin H. Johnson 1933-7-12 F 203 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  JEPS114625  Lupinus lepidus var. sellulus Lowell Ahart, John Dittes 2008-6-19 14886 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  UC1481378  Lupinus lepidus var. sellulus B. J. Cox 1971-6-11 3186 Lassen 3 mi E of Westwood ( on Ca. Hwy. 36) 1607 Comment
  UC82212  Lupinus lepidus var. sellulus Mrs. R. M. Austin Aug 1882 Lassen Kings Valley Comment
  CHSC60830  Lupinus leucophyllus Vernon H. Oswald; Lowell Ahart 1993-6-28 5607 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC710905  Lupinus leucophyllus C. L. Hitchcock 1940-5-26 6614 Lassen Lave beds ca 12 mi n Fall River Mills (on Fall River); Fall River, Lava Beds 1371 Comment
  NY747375  Lupinus leucophyllus var. leucophyllus H. D. D. Ripley 1943-6-13 5679 Lassen Milford 1265 Comment
  SEINET10841246  Lupinus lyallii var. lyallii Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park, near the peak. In dry ground. Comment
  NY747435  Lupinus microcarpus A. A. Heller 1938-6-23 15219 Lassen Along the highway (U.S. #395) between Termo and Madeline 1524 Comment
  UC1533166  Lupinus microcarpus var. microcarpus Gary Schoolcraft 1981-9-1 572 Lassen along road 3 mi se Bieber 1249 Comment
  UCSC010319  Lupinus microcarpus var. microcarpus Unknown 2016-6-7 21018 Lassen West edge of State Highway 299, Big Valley Mountains, 0.4 air miles northeast of Big Valley Summit, 5.0 air miles southwest of Bieber. 1398 Comment
  JEPS103164  Lupinus nevadensis Beth Corbin 2002-4-11 1056 Lassen Skedaddle Ranch Rd, W of Skedaddle Ck, .5 mi NE of Spencer Ck Rd. 1310 Comment
  RSA0005618  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC138031  Lupinus onustus T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  SEINET8059970  Lupinus polyphyllus var. burkei W. W. Eggleston 1910-1 6305 Lassen Vicinity of Doyle Station 1240 Comment
  UC1523758  Lupinus saxosus Gary Schoolcraft 1983-6-7 968 Lassen near Ash Valley 1706 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
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake Valley. Comment
  CDA40729  Lycopus uniflorus Gordon Leppig, J. Cromwell 1997-7-27 625 Lassen Modoc National Forest. Blue Lake Ranch. 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
  UCSB48516  Madia Clare B. Hardham 1961-6-16 7451 Lassen collected at Gold Run Creek S of Susanville Comment
  RSA0011458  Madia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46977 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  UC1567356  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen intersection of Highway 139 and A2 s Adin 1341 Comment
  CHSC58835  Madia glomerata Vernon H. Oswald; Lowell Ahart 1992-7-16 5130 Lassen Feather Lake on the S side of 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. On the margin of the lake. 1749 Comment
  UC905684  Madia glomerata David D. Keck 1930-7-23 955 Lassen 15 mi w Susanville; Sierra Nevada 1525 Comment
  CAS-BOT-BC343058  Madia gracilis John Thomas Howell 1973-7-10 49781 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC343059  Madia gracilis John Thomas Howell 1974-7-10 50552 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC343062  Madia gracilis Clare B. Hardham 1969-8-28 17460 Lassen Slope west of Janesville Comment
  CHSC106081  Madia gracilis Lowell Ahart; John Dittes 2010-7-31 17006 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC44881  Madia gracilis Lowell Ahart; John Thomas Howell 1974-7-9 525 Lassen Along the edge of Eagle Lake Road, about 3 miles north-west of Susanville. 1584 Comment
  SEINET11807269  Madia gracilis N. H. Holmgren, Holmgren, P. K. 1980-1 9497 Lassen Observation Peak, S base in upper Smoke Creek drainage, 19 km airline distance ESE of Ravendale 1680 Comment
  CAS-BOT-BC512876  Maianthemum stellatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49421 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC186080  Malacothrix glabrata unknown 1892-6-22 Lassen Honey Lake Comment
  CAS-BOT-BC348031  Malacothrix torreyi Louella Bass 1982-6-20 s.n. Lassen About 1 mile west of Karlo Comment
  CHSC12430  Malva neglecta Robert W. Severin 1969-6-25 18 Lassen 1 3/4 mi e E.L.B.S. along road to Murrer's Upper Meadow, 1/2 mi from road to station. 1584 Comment
  UC1192280  Malvella leprosa Verne Grant and Irving Schneider 1947-9-6 8386 Lassen hot springs ca. 1 mi. w. Wendel Comment
  UCR67380  Malvella leprosa George K. Helmkamp 1990-9-23 A- 8 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UC1124510  Marrubium vulgare A. Simontacchi 1940-7-20 933 Lassen Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest) Comment
  CAS-BOT-BC67834  Marsilea vestita R. K. Gierisch; D. H. Esplin 1969-8-25 3597 Lassen Harvey Valley 1676 Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  RSA0011558  Marsilea vestita R. F. Thorne, Larry E. DeBuhr 1975-8-22 46994 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  JEPS114749  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  SEINET10474309  Matricaria matricarioides Mary Susan Taylor 1982-8-19 Taylor 5025 A Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  CHSC36282  Matricaria occidentalis M. S. Taylor 1982-6-12 4651 Lassen Alkali flats 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
  CHSC93666  Medicago lupulina Lowell Ahart; John Dittes 2005-6-2 11966 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
  CAS-BOT-BC281027  Melica stricta Clare B. Hardham 1969-8-28 s.n. Lassen W of Janesville Comment
  JEPS121277  Melilotus officinalis Lowell Ahart, John Dittes 2013-7-22 18868 Lassen On the sides of the levee road, about 100 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1594650  Mentha canadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5109 Lassen Bridge Creek entering McCoy Flat Reservoir (on the s side of Hwy 44 between Old Station and Susanville); Bridge Creek entering McCoy Flat Reservoir 1691 Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 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
  RSA7885  Mentzelia albicaulis H. A. Barker 1927-7-15 807 Lassen Desert east of Beckwith [Beckwourth], near highway. Comment
Read comments
Dec 30 2016
  JEPS124816 Image available Mentzelia albicaulis Joe Ammirati 1964-6-30 70 Lassen N. of Susanville ca. 12.3 mi. on HW 139. Comment
  UCD117207  Mentzelia albicaulis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CHSC30625  Mentzelia congesta E. C. Taylor 1975-7-19 83 Lassen Summit of Galatin Peak. 2117 Comment
  JEPS87411  Mentzelia congesta Vernon H. Oswald and Lowell Ahart 1993-6-14 5537 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  CHSC4782  Mentzelia dispersa R. Carter 1967-6-27 566 Lassen 1.75 mi W of Eagle Lake Biology Station. Growing in dry rocky soil ca. 10 yds. off S side of Rd. 1584 Comment
  CHSC92643  Mentzelia dispersa L. P. Janeway 2005-7-4 8470 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  RSA715543  Mentzelia dispersa L. Ahart 2005-6-1 s.n. Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  HSC15839  Mentzelia laevicaulis Jim Vaughn 1956-8-17 Lassen Hwy. 36, 1 mi. W of Susanville. Comment
  UCR73830  Mentzelia montana G. L. Webster 1989-5-13 7705 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  CHSC68851  Mertensia ciliata Vernon Oswald; Lowell Ahart 1997-6-24 8617 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
  JEPS95161  Mertensia ciliata Vernon Oswald and Lowell Ahart 1997-6-24 8617 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  CAS-BOT-BC231081  Mertensia oblongifolia Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-14 86- 39 -1 Lassen 1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale 1706 Comment
  CAS-BOT-BC428456  Micranthes aprica 1927-5-20 1 Lassen Lassen National Forest. Norval Flat. 1747 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
  CHSC68767  Micranthes nidifica Vernon H. Oswald; Lowell Ahart 1997-5-27 8499 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 margin of the flood plain of a small creek paralleling the road. 1546 Comment
  CAS-BOT-BC429081  Micranthes odontoloma Alice Eastwood 1912-8-22 1861 Lassen Trail from Morgans Springs to Lassen Butte 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
  JEPS87523  Microseris laciniata Vernon H. Oswald and Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  CAS-BOT-BC322657  Microseris laciniata G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area south of TulePatch Spring 1463 Comment
  CHSC60821  Microseris laciniata subsp. laciniata Vernon H. Oswald; Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. Meadow. 1719 Comment
  CHSC77197  Microseris laciniata subsp. laciniata G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area S. of TulePatch Spring. Meadow. 1463 Comment
  JEPS88326  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1996-6-24 7843 Lassen Papoose Meados located ca.0/5 mi E of Eagle Lake Road (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau. 1633 Comment
  UC1609228  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  UC563094  Microseris laciniata subsp. laciniata Elmer I. Applegate 1929-6-24 5879 Lassen near Bieber; Big Valley, Gumbo Flat Comment
  RSA702595  Microseris nutans L. P. Janeway 2004-6-26 8152 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1070115  Microseris nutans A. Simontacchi 1940-5-28 782 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC773918  Microseris nutans L. R. Short 1936-6-1 S- 353 Lassen Burgess Spring Experiment Range Lassen Forest 1859 Comment
  CHSC6206  Microsteris gracilis C. Palmiter 1946-6-20 Lassen Grasshopper Valley. Eagle Lake. 1624 Comment
  CHSC71094  Microsteris gracilis Vernon H. Oswald; Lowell Ahart 1998-5-22 9100 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  UC24031 Image available Miltitzia glandulifera var. californica Mrs. C. C. Bruce 1898-6-1 21354 Lassen Madeline Plains; ; Madeline Plains, Lassen Co. Comment
  UC1609131  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-28 5609 Lassen ne Poison Lake (n of Hwy. 44 on Rd. 33N06, nne of Burgess Meadow, sse flank of mtn.); Harvey Mtn. 1798 Comment
  POM252822  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi. south of Westwood. 1524 Comment
  HSC95322  Mimulus guttatus Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 533 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS80678  Mimulus guttatus L. R. Heckard and T. I. Chuang 1981-6-10 5530 Lassen 13 1/2 mi s Adin (along highway 139) 1463 Comment
  UC886176  Mimulus guttatus A. A. Heller 1938-6-22 15183 Lassen 1 mi s Westwood 1524 Comment
  JEPS23736  Mimulus inflatulus Rimo Bacigalupi with S. Galen Smith 1957-6-28 5998 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  JEPS80675  Mimulus microphyllus L. R. Heckard and T. I. Chuang 1981-6-10 5527 Lassen 2.3 mi w Nubiebar (along route 299) 1341 Comment
  UC1523772  Mimulus moniliformis Gary Schoolcraft 1981-6-25 475 Lassen Comment
  HSC20714  Mimulus moschatus M. T. Milligan 1964-7-16 132 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC1778585  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen Pumice by S side of Hwy 44 vicinity of Bogard campground. 1737 Comment
  SEINET10863348  Mimulus nanus Paul Gallian, David B. Dunn 1971-6-2 Gallian 518 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
  JEPS85744  Mimulus nanus var. mephiticus Roy E. Buck, Robert A. Price 1988-6-26 1032 Lassen ca. 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  LA209350  Mimulus nanus var. mephiticus A. A. Heller; P. B. Kennedy 1907-7-1 sn Lassen Near Old Chat Comment
  RSA437621  Mimulus nanus var. mephiticus Barbara J. Ertter, Gary Schoolcraft 1987-6-16 7197 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  UCD94000  Mimulus nanus var. mephiticus Dena Grossenbacher; Joel Smith 2008-6-25 893 Lassen Along Forest Service Road 29N43 approximately 1 mile east of junction with Gold Run Road. 1682 Comment
  RSA536395  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-20 629 Lassen Gray's Valley, 4.5 miles N of USFS Bogard Work Center. 1715 Comment
  UC477503  Monardella glauca Geo. A. Fisher 1928-6-12 27 Lassen Lassen Forest 1615 Comment
  CAS-BOT-BC221782  Monardella odoratissima John Thomas Howell 1934-7-9 12525 Lassen Pine Creek Flat Comment
  CHSC52767  Monardella odoratissima subsp. glauca L. P. Janeway 1990-7-4 3771 A Lassen Ca 0.9 mi NE of Meadowview Peak. 1981 Comment
  UC2035864  Monardella odoratissima subsp. glauca John Thomas Howell 1934-7-8 12487 Lassen Spalding's Eagle Lake Comment
  CAS-BOT-BC222148  Monardella odoratissima subsp. pallida Geo. A. Fisher 1928-6-12 27 Lassen Lassen National Forest 1615 Comment
  HSC14276  Monardella odoratissima subsp. pallida M. T. Milligan 1964-7-16 133 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  OBI75862  Monardella odoratissima subsp. pallida Anthony Baniaga 2011-9-1 509 Lassen Lassen Natl Forest. W of Bailey Crk, along F.S. 10 Red Cinder quad. T29N R7E sec 3 SE of NE 1844 Comment
  SEINET12319572  Monardella villosa Unknown 1975-1 53 Lassen NW side of Coleman Lake, ca 32m from lake's edge, ca 10.6 km NE of Susanville 1921 Comment
  CHSC99537  Monolepis nuttalliana Lowell Ahart; John Dittes 2008-6-20 14973 Lassen West of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC851254  Monolepis nuttalliana Milo S. Baker 1936-6-16 8365 Lassen ca. 30 mi. n. Susanville Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC59564  Montia chamissoi Mary Meyer 1980-5-15 531 Lassen In streams along rocks and in moist riparian sites. 1371 Comment
  UC1609468  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02) 7 air mi w Eagle Lake (5.3 mi e of Lassen 105 (32N28Y), near Summit Camp) 1889 Comment
  UC963894  Montia chamissoi Milo S. Baker 1952-5-23 12421 a Lassen e of Chester (Hwy 36) Comment
  CHSC64892  Montia fontana subsp. chondrosperma Vernon H. Oswald 1995-6-26 6925 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally abundant, forming mats on wet rocks in a shallow, roadside streamlet. 1712 Comment
  CHSC60845  Montia linearis Vernon H. Oswald; Lowell Ahart 1993-6-28 5611 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  CHSC66257  Montia linearis Vernon H. Oswald; Lowell Ahart 1996-6-24 7875 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Growing in moist soil on the edge of Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS118274  Montia linearis Lowell Ahart, John Dittes 2011-6-20 17476 Lassen Meadow, 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
  RSA0035909  Montia linearis Lowell A. Ahart, John Dittes 2008-6-20 14938 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC262633  Muhlenbergia asperifolia John Thomas Howell 1934-7-8 12489 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC262634  Muhlenbergia asperifolia John Thomas Howell; G. H. True 1973-8-1 50147 Lassen In Mountain Meadows east of Westwood 1554 Comment
  SEINET7297179 Image available Muhlenbergia asperifolia John Thomas Howell, Gordon H. True 1973-1 50147 Lassen Roadside in Mountain Meadows east of Westwood 1554 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
  UC36660  Muhlenbergia asperifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3367 Lassen Adobe Meadows Honey Lake Valley Comment
  UC1024822  Muhlenbergia filiformis Leo Whitney 1935-6-21 3250 Lassen meadow Lassen National Forest, Fruit Grower's Supply Company, Camp Comment
  UCD86900  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 Comment
  UC1567382  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen Susanville NW corner of Secret Valley near Karlo. 1356 Comment
  NY492693  Myosurus minimus P. H. Raven 1958-6-17 13285 Lassen Along U. S. Highway 395, 1.9 miles south of Ravendale Comment
  CAS-BOT-BC83321  Myosurus minimus Clarence R. Quick 1962-6-17 62 25 C Lassen Swains Hole, a man-made pond south of Blacks Mountain Experimental Station. 1554 Comment
  CHSC676  Myriophyllum sibiricum V. Holt 1946-7-12 Lassen Pine Creek Slough. 1584 Comment
  SBBG118561  Myriophyllum sibiricum R. F. Thorne with C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, near jct of Grasshopper Rd and St Hwy 139 Comment
  SEINET231810 Image available Myriophyllum sibiricum A. Tiehm, G Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on S side of Buckhorn rd to Ravendale about 6 rd mi W of the state line. 1698 Comment
  HSC22985  Nama aretioides John Pratt 1970-7-5 67 Lassen 1250 Comment
  RSA17432  Nama aretioides Elmer I. Applegate 1934-5-4 8929 Lassen Secret Valley, 20 miles south of Ravendale. Comment
  JEPS1373  Nama densa John G. Lemmon 1893-5-28 Lassen Susanville Comment
  UC735057  Nama densa var. parviflora Lincoln Constance 1946-7-3 3099 Lassen 7 mi n of Spaldings (northern edge of Eagle Lake); northern edge of Eagle Lake 1676 Comment
  CHSC60759  Navarretia breweri Vernon H. Oswald; Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  CHSC68897  Navarretia breweri Vernon Oswald; Lowell Ahart 1997-6-24 8605 .2 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. (29N10). 1655 Comment
  SD3921  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UC1124158  Navarretia breweri A. Simontacchi 1940-5-28 774 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC125019  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  HSC63771  Navarretia breweri Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  CHSC118850  Navarretia capillaris L. P. Janeway 2015-8-9 11822 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01 - the road to Patterson Campground); 0.7 air-km west of Long Valley , 5.3 air-km northeast of Blur Lake. 2179 Comment
  RSA702598  Navarretia capillaris L. P. Janeway 2004-6-26 8148 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1058209  Navarretia divaricata subsp. vividior C. McMillan 1949-6-15 1541 Lassen 5 mi w Bieber Comment
  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
  GMDRC6949  Navarretia leptalea subsp. leptalea J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31423 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  CHSC54188  Navarretia leucocephala subsp. minima Vernon H. Oswald 1991-5-28 4617 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the bed of vernal pools on a flat east of the barn. 1264 Comment
  UC1191630  Navarretia leucocephala subsp. minima Malcolm A. Nobs and S. Galen Smith 1949-5-29 756 Lassen Nubieber, on the Great Northern Railway Nubieber Comment
  RSA67607  Navarretia sinistra Verne Grant, Alva Grant 1950-7-13 8941 Lassen Above Fredonyer Camp on road from Westwood to Susanville 1524 Comment
  CHSC110778  Navarretia sinistra subsp. sinistra Dean Wm. Taylor 2012-7-18 21281 Lassen Cascade Ranges. Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  CHSC117190  Nemophila pedunculata Lowell Ahart; John Dittes 2016-6-7 21010 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valleuy Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  JEPS120810  Nemophila pedunculata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18724 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
  RSA0043177  Nemophila pedunculata L. Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4.75 miles (air) north of the intersection of Scott Road and Hwy 70, 6.2 miles (air) northwest of Hallelujah Junction. 1460 Comment
  CHSC4447  Neoholmgrenia andina K. R. Stern 1967-6-24 2416 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC67175  Nestotus stenophyllus James D. Jokerst 1991-5-29 3305 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
  UC26151  Nicotiana attenuata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  UCD126693  Nicotiana attenuata Gerald Dickinson 1963-7-17 108 Lassen at entrance of Eagle Lake recreation site, Highway 139. 1559 Comment
  HSC4506  Nitrophila occidentalis Fred J. Kindel 1955-7-14 Lassen Wendel Comment
  CHSC71124  Nothocalais troximoides Vernon H. Oswald; Lowell Ahart 1998-5-22 9097 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  JEPS103174  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen S. 3of CR. 512, S. of Red Rock Lake 1828 Comment
  UC682109  Nothocalais troximoides G. L. Stebbins Jr. with A. A. Beetle 1942-5-30 3238 Lassen on road to Adin 5.2 mi e Bieber 1280 Comment
  RSA0013779  Nuphar lutea subsp. polysepala E. K. Balls 1950-5-19 14787 Lassen 15.5 mi. W of Madeline on rd. from Adin. 1631 Comment
  CAS-BOT-BC171455  Oenothera M. Williams 1974-7-27 s.n. Lassen Burned area near Hallelujah Junction, Sierra Nevada 1493 Comment
  CAS-BOT-BC171461  Oenothera boothii subsp. alyssoides Louella Bass 1982-6-20 s.n. Lassen Cemetery gate, McKissick Comment
  HSC22878  Oenothera deltoides John Pratt 1970-6-14 16 Lassen East of Janesville Comment
  JEPS124824 Image available Oenothera deltoides B. Wenegrat 1969-7-8 52 Lassen off H. 395 8 miles S of Milford. Comment
  UC1584022  Oenothera deltoides subsp. cognata G. Schoolcraft 1990-6-12 2086 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CHSC106678  Oenothera deltoides subsp. piperi Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC26139  Oenothera deltoides subsp. piperi Detzer; Sacks 1977-6-27 46 Lassen On bank along Hwy. 395, ca. 4 km w of Milford. 1386 Comment
  JEPS29737  Oenothera deltoides subsp. piperi Rimo Bacigalupi and L. R. Heckard 1962-5-28 8492 Lassen along US Hwy 395 10 mi s Milford 1219 Comment
  RSA146085  Oenothera deltoides subsp. piperi G. I. Stage, R. W. Thorp 1959-6-19 59 -113 Lassen 7.2 miles southeast of Milford. Comment
  POM38743  Oenothera deltoides subsp. piperi Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  HSC22961  Oenothera elata subsp. hirsutissima John Pratt 1970-7-18 77 Lassen 1 mi. E of Milford Comment
  RSA27327  Oenothera flava C. L. Hitchcock 1940-5-26 6642 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC29938  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 71 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  CHSC9548  Onobrychis viciifolia R. Clicquennoi 1967-6-24 13 Lassen .2 mi w of main rd. 3 mi e of Eagle Lake Biological Station on rd. to Murrer's Meadow. 1554 Comment
  CAS-BOT-BC349943  Onopordum acanthium T. C. Fuller 1958-7-9 901 -58 Lassen Highway 299, Bieber Comment
  CAS-BOT-BC349944  Onopordum acanthium T. C. Fuller 1958-7-8 898 -58 Lassen Highway 299, 0.1 mi. S. of Lassen County Line Comment
  SEINET6188292  Oreocarya schoolcraftii G. Schoolcraft 1999-7-12 2858 Lassen N. of Tuledad Canyon near NV stateline. 1737 Comment
  CAS-BOT-BC350045  Oreostemma alpigenum var. andersonii Alice Eastwood 1912-8-22 1899 Lassen Battle Creek Meadow, Lassen Butte Region Comment
  UC1037281  Oreostemma alpigenum var. andersonii Leo Whitney 1934-9-16 1718 Lassen Bumpass Hell Lassen National Park 2529 Comment
  RSA0011497  Orobanche Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46972 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  UC1137776  Orobanche corymbosa subsp. corymbosa August L. Hormay 1934-7-2 Lassen Lassen National Forest, 1/4 mile NW of Black's Mountains, Headquarters. Comment
  CAS-BOT-BC499907  Orobanche fasciculata R. J. Dobbs 1928-5-23 s.n. Lassen Strawberry Pek switchback 1219 Comment
  JEPS22322  Orobanche uniflora subsp. occidentalis Peter H. Raven and Otto T. Solbrig 1958-6-16 13251 Lassen 4.5 miles east of Westwood on State Highway 36. Comment
  HSC24668  Orobanche vallicola John Pratt 1970-7-5 64 Lassen 1250 Comment
  CAS-BOT-BC266614  Orthocarpus cuspidatus Lassen 1927 G. S. Crew 1927-7-15 66 Lassen 1 mile W Bogard Ranger Station 1737 Comment
  CHSC60858  Orthocarpus cuspidatus subsp. cryptanthus Vernon H. Oswald; Lowell Ahart 1993-6-28 5604 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC1484779  Orthocarpus cuspidatus subsp. cryptanthus Noel H. Holmgren and Patricia K. Holmgren 1978-6-12 8933 Lassen 17 km (10.5 mi) airline distance ese Ravendale (s of Observation Peak, upper Smoke Creek); Upper Smoke Creek, just s of Observation Peak 1770 Comment
  UC172657  Orthocarpus cuspidatus subsp. cryptanthus Frank Stephens July, 1894 Lassen Bunch Grass Spring Comment
  JEPS98391  Oryzopsis exigua Vernon H. Oswald, G. Schoolcraft, M. Dolan, and B. Corbin 2000-6-18 9929 Lassen E of Ravendale (E-NE of the lookout on Observation Peak) 2377 Comment
  UC1483840  Osmorhiza berteroi G. Schoolcraft 1979-8-2 178 Lassen Tule Mountain; top, Bureau of Land Management 2133 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
  UC125352  Oxytheca dendroidea subsp. dendroidea T. S. Brandegee 1892-6-22 Lassen Honey Lake 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
  UC1561831  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
  HSC42421  Packera eurycephala Barbara Kelly 1977-8-8 548 Lassen Ash Creek Campground Comment
  CAS-BOT-BC316859  Packera eurycephala var. eurycephala Michael A. Vincent 1999-6-9 8581 Lassen Along US Rte. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  UC35987  Packera eurycephala var. eurycephala M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixie Mts. Comment
  CHSC5217  Packera multilobata A. Santos 1946-6-17 Lassen Eagle Lake. Mr. Fredonyer Rd. 2072 Comment
  CHSC21231  Paeonia brownii Robert A. Schlising 1974-7-19 3151 Lassen East side of Eagle Lake, just south of Eagle Lake Field Station; basaltic rocks from Black Mt. lava flow by Bly Tunnel. Comment
  CHSC6195  Paeonia brownii P. Balch 1955-7-22 Lassen Roadside meadow 3 1/2 mi. from Antelope Lookout. Eagle Lake. 2133 Comment
  CAS-BOT-BC10387  Paeonia brownii J. T. Howell; Gordon H. True; Margaret Williams 1973-5-12 49158 Lassen In cemetary, Janesville 1295 Comment
  CHSC84341  Panicum capillare Lowell Ahart 2003-8-17 10517 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
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  SBBG7089  Pedicularis attollens H. and M. Dearing 1938-7-1 2238 Lassen 12 mi W of Susanville Comment
  SEINET3836472 Image available Pedicularis semibarbata Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Susanville, Perkin's Ranch 1829 Comment
  UC1125741  Pedicularis semibarbata A. Simontacchi 1940-5-27 727 Lassen 9.3 mi nw of Crater Lake; Lassen National Forest 1752 Comment
  UC1523781  Pedicularis semibarbata G. Schoolcraft 1981-6-30 487 Lassen western slopes of Roop Mountain 1889 Comment
  SD6613  Pedicularis semibarbata Mrs. R. M. Austin 1880-1 Lassen Dutch Hill Comment
  JEPS95203  Pellaea brachyptera Gary Schoolcraft 1996-3-31 2518 Lassen 4 miles SW of Susanville. 1493 Comment
  CAS-BOT-BC69367  Pellaea breweri T. S. Brandegee 1892-6-29 s.n. Lassen unspecified 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
  SBBG85835  Penstemon deustus F. W. Pennell 1940-6-9 25768 Lassen below basaltic ridge, hill W of Susanville 1371 Comment
  CHSC65129  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1995-7-24 7135 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  NY600703  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen East slope of Tule Mountains 1770 Comment
  UC506922  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen Forest 1783 Comment
  NY600700  Penstemon gracilentus K. A. Vincent 1987-8-5 4498 Lassen Sierra Nevada, Roop Mountain; along CA A1 at Eagle Lake Summit, ca. 7.6 miles north of junction CA 36, ca. 7 air miles northwest of Susanville 1932.4 Comment
  RSA668193  Penstemon gracilentus Karl Vincent, Charlotte A. Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn. Along CA A1 at Eagle Lake Summit, ca 7.6 mi N of jct. CA 36, ca 7 air miles NW of Susanville. 1933 Comment
  SEINET5328215 Image available Penstemon gracilentus G. Schoolcraft 1994-7-7 2370 Lassen about 1 mi W of Boot Lake 235 Comment
  NY627264  Penstemon neotericus J. T. Howell 1973-7-10 49758 Lassen Near Westwood, Sierra Nevada 1554.5 Comment
  NY627254  Penstemon neotericus K. A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mountain; along CA 36, ca. 1 mile east of jct. CA A21 on east side of Westwood. 1524.0 Comment
  NY627255  Penstemon neotericus K. A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mountain; along CA A1, ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  UC887182  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen between Chester and Westwood; between Chester and Westwood 1524 Comment
  POM172676  Penstemon newberryi subsp. newberryi Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  CHSC36449  Penstemon roezlii Susan H. Euing 1982-6-4 3 Lassen Ca. 0.5 mi e of Murrers Upper Meadow on road leading to meadow. Comment
  CHSC37349  Penstemon roezlii Jennifer Estep 1978-6-27 19 Lassen Dry L., E of Eagle L. 1645 Comment
  CHSC4267  Penstemon roezlii K. R. Stern 1967-6-24 2417 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC4938  Penstemon roezlii W. Lessig 1967-6-24 5 Lassen 3 mi se Eagle Lake Biology Station, above Murrer's Meadow. 1524 Comment
  HSC30182  Penstemon roezlii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19289 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  NY650101  Penstemon roezlii T. W. Nelson 1980-7-6 6021 Lassen Adin Quad. Along Adin-Madeline road ca. 0.5 mile west of Moll Reservoir. 1585.0 Comment
  NY650102  Penstemon roezlii J. T. Howell 1973-8-1 50205 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164.1 Comment
  RSA339998  Penstemon roezlii Noel Holmgren, Patricia K. Holmgren 1980-7-5 9523 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from US Hwy 395 via Rye Patch canyon, 24 km (15 mi) airline distance southeast of Ravendale. 1585 Comment
  SBBG28920  Penstemon roezlii D. D. Keck 1954-7-23 954 Lassen 12 mi W of Susanville 1676 Comment
  CDA41987  Penstemon roezlii T. C. Fuller 1963-6-1 10633 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CHSC12939  Penstemon rydbergii var. oreocharis K. R. Stern 1974-6-26 5869 Lassen E end of Champs flat. Comment
  CHSC1878  Penstemon rydbergii var. oreocharis K. Chew 1954-7-6 Lassen Along Pine Creek, 1 mi. below Stephens meadows. 1828 Comment
  CHSC30576  Penstemon rydbergii var. oreocharis Sori H. Shad 1970-7-9 41 Lassen North east edge of Meadow. 1584 Comment
  CHSC30588  Penstemon rydbergii var. oreocharis Marc Held 1972-6-29 23 Lassen South end of Dean's Meadow. Comment
  CHSC93700  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2005-6-2 11988 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
  RSA59553  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen 0.5 mi N of turnoff to Heir, Hwy 395, between Milford and Doyle. 1280 Comment
  UC1063480  Penstemon rydbergii var. oreocharis A. Simontacchi 1940-6-3 792 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC696713  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen about 4 mi e Westwood; e of Westwood 1432 Comment
  CHSC12411  Penstemon speciosus Lynn R. Thomas 1969-6-20 135 Lassen Just above Deans Meadow, ca. 6 mi. s of E. L. B. S. 2011 Comment
  CHSC12458  Penstemon speciosus Robert W. Severin 1969-6-20 2 Lassen 4 miles s of E. L. B. S. in Dean's Meadow. 1950 Comment
  CHSC64811  Penstemon speciosus Vernon H. Oswald 1995-5-31 6812 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.0 mi e of Hwy. 395, between Litchfield and Ravendale. 1341 Comment
  NY661007  Penstemon speciosus A. J. Cronquist 1959-6-16 8455 Lassen 26 miles northwest of Reno Comment
  POM44291  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC506982  Penstemon speciosus George A. Fischer and Irwin H. Johnson 1933-7-12 F 220 Lassen Lassen National Forest 1706 Comment
  NY660820  Penstemon speciosus H. D. D. Ripley 1943-6-13 5672 Lassen South of Constantia 1463.0 Comment
  NY660841  Penstemon speciosus F. W. Pennell 1940-7-23 26254 Lassen Route 395, 2 miles north of junction with route #24, northeast of Plumas 1524.0 Comment
  NY661063  Penstemon speciosus D. D. Keck 1935-6-25 3768 Lassen Ca. 2 miles west of Westwood on road to Chester at Co. line. Comment
  RSA121811  Penstemon speciosus G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 220 Lassen Lassen Forest. 1707 Comment
  SBBG54516  Penstemon speciosus F. W. Pennell 1940-7-23 26254 Lassen 2 mi N of jct with St Hwy 24, NE of Plumas Comment
  NY661060  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 947 Lassen Reno Junction (formerly Chats) southeastern Lassen County. 1493.5 Comment
  CAS-BOT-BC243405  Penstemon sudans H. D. Ripley; R. C. Barneby 1943-6-14 5739 Lassen W. of Susanville 1371 Comment
  CAS-BOT-BC243412  Penstemon sudans David D. Keck; J. Clausen 1935-6-25 3756 Lassen Susanville 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
  UC1012184  Penstemon sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36 hill w Susanville; hill w of Susanville 1371 Comment
  UC1561843  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains 1828 Comment
  CHSC91292  Perideridia bolanderi Lowell Ahart; John Dittes 2005-6-1 11916 Lassen Along a small wash, on the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  UC1137777  Perideridia bolanderi subsp. bolanderi George A. Fischer and Irwin H. Johnson 1933-7-12 F 210 Lassen Grass Valley Lassen National Forest 1722 Comment
  JEPS117493  Perideridia kelloggii Lowell Ahart, John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  CHSC42653  Perideridia oregana Vernon Oswald 1986-7-22 2218 Lassen Hwy 36, 15.0 mi e of the Plumas-Lassen County line, 3.5 mi ne of Freydonyer Pass. 1508 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-BC413523  Persicaria amphibia John Thomas Howell 1975-7-23 51405 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  HSC22962  Phacelia adenophora John Pratt 1970-7-5 66 Lassen 1250 Comment
  POM72872  Phacelia adenophora C. C. Bruce 1898-06 2198 Lassen Madeline Plains. Comment
  SEINET12332924  Phacelia adenophora A. Tiehm, Nachlinger, J.; Williams, M. 1988-1 11701 Lassen S side of Shaffer Mt., 3.4 road mi N of the Wendel road on Hwy 395 from Susanville to Alturas Comment
  SJSU11244  Phacelia hastata J. W. Tilden 1960-6-27 1499 Lassen foot of Moonlight Rd, outskirts of Westwood 1524 Comment
  SD61076  Phacelia hastata Darley F. Howe 1964-8-1 3913 Lassen Modoc Natl. Forest. 4.8 mi. on Ridge above Harvey Creek. 2133 Comment
  SBBG64963  Phacelia heterophylla E. Rockwell -Jun-1925 404 Lassen Eagle Lake 1554 Comment
  UC107564  Phacelia heterophylla subsp. virgata T. S. Brandegee 1892-6-26 Lassen Milford Comment
  RSA122631  Phacelia heterophylla subsp. virgata L. R. Short 1936-6-30 S- 463 Lassen Burgess Spr. Exp. Range. 1817 Comment
  CHSC26178  Phacelia humilis J. P. Kroessig 1977-5-25 35 Lassen At Eagle Lake Biological Station, ca. 37 km nnw of susanville. 1570 Comment
  UC1259992  Phacelia humilis Jeffrey Huber 1971-6-2 111 Lassen on CA Hwy 139 approx. 30 mi n Susanville 1645 Comment
  SD61075  Phacelia humilis Darley F. Howe 1964-8-1 3914 Lassen Modoc Natl. Forest, Warner Mts., 4.8 mi. from Harvey Creek on ridge road. 2133 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
  POM73344  Phacelia humilis var. humilis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC33362  Phacelia linearis Wayne O. Baum 1971-7-5 71 -17 Lassen E. slope of Gallatin Peak. 1981 Comment
  JEPS2134  Phacelia linearis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen near Chat; Honey Lake Valley Comment
  NY998460  Phacelia linearis W. W. Eggleston 1911-5-29 6721 Lassen Vicinity of Doyle Station 1290 Comment
  POM203782  Phacelia linearis J. T. Howell 1934-6-10 11901 Lassen 3 miles S of Ravendale. Comment
  RSA303850  Phacelia linearis Jim R. Shevock 1972-5-20 1819 Lassen Highway 395, Honey Lake. 1311 Comment
  UCD20363  Phacelia linearis Joe DiTomaso 2002-6-4 s.n. Lassen Lassen County, about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. 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
  NY1056438  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale 1341 Comment
  NY1056499  Phacelia lutea var. lutea M. J. Williams 1986-5-12 86- 21 --1 Lassen Smoke Creek Road, east of Highway 395 1448 Comment
  HSC13645  Phacelia mutabilis M. T. Milligan 1964-7-16 134 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  JEPS17909  Phacelia procera Rimo Bacigalupi with G. T. Robbins 1955-7-21 5433 Lassen along upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Cr. 1767 Comment
  CHSC60749  Phacelia ramosissima var. eremophila Vernon H. Oswald; Lowell Ahart 1993-6-14 5540 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  OBI82828  Phacelia ramosissima var. eremophila Robert L. Johnson, Mikel R. Stevens 2015-7-10 3931 Lassen 0.1 rd mi E of jct with Hwy 395 on Standish Buntingville Rd (A3). Buntingville. Both sides of rd.; 0 1261 Comment
  UC107342  Phacelia ramosissima var. eremophila T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  CHSC27604  Phacelia ramosissima var. ramosissima N. E. Heiken 1978-7-27 51 Lassen SE side of Eagle Lake. 1554 Comment
  CHSC59552  Phacelia ramosissima var. ramosissima M> Meyer 1980-7-8 514 Lassen Amongst rocks (lg.) and junipers on top of Grasshopper Ridge. 1724 Comment
  HSC29510  Phacelia thermalis C. L. Hitchcock 1940-5-26 Lassen 1 mi. W of Bieber, Pitt River Comment
  NY1057982  Phacelia thermalis H. D. D. Ripley 1943-6-15 5761 Lassen Smoke Creek, northeast of Viewland 1341 Comment
  CAS-BOT-BC265821  Phalaris arundinacea John Thomas Howell 1975-7-23 51402 Lassen Susanville, Sierra Nevada 1295 Comment
  CHSC7695  Phalaris arundinacea Beverley J. Wise 1969-6-4 135 Lassen 2 mi. east of Susanville on Las. Co. Rd. 215. 1310 Comment
  JEPS88429  Phalaris arundinacea Vernon H. Oswald and Lowell Ahart 1996-8-1 8108 Lassen receding shore of the Mountain Meadows Reservoir ne of Indian Ole Dam Mountain Meadows Reservoir (sw of Westwood); , ne of Indian Ole Dam 1539 Comment
  CAS-BOT-BC250847  Phleum pratense John Thomas Howell; Gordon H. True; Margaret Williams; Louella Bass 1973-6-28 49504 Lassen Elysian Valley, west of Janesville 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
  CHSC61165  Phlox diffusa Vernon H. Oswald; Lowell Ahart 1993-5-12 5372 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood). 1737 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
  UC1137715  Phlox douglasii subsp. rigida L. R. Short 1936-4-28 S- 332 Lassen Burgess Spring Experimental Range Lassen Forest 1737 Comment
  UC1137763  Phlox gracilis August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  UC773907  Phlox gracilis unknown 1936-5-7 S- 343 Lassen Burgess Spring Experimental Range Lassen Forest 1737 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
  CDA40284  Phlox stansburyi T. C. Fuller 1963-6-11 10662 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  RSA38466  Phlox stansburyi P. A. Munz 1947-5-19 11884 Lassen Madeline 1677 Comment
  RSA303543  Phoenicaulis cheiranthoides J. R. Shevock 1971-4-9 945 Lassen Hwy 299, E of Dana. 1159 Comment
  JEPS127162  Phoradendron bolleanum Lowell Ahart, John Dittes 2016-7-13 21136 Lassen 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 southern slope of Big Valley. Comment
  PASA1593  Phyllodoce breweri Margaret Stason 1932-6-23 Lassen near mineral Comment
  RSA46500  Pinus jeffreyi Doris K. Kildale 1926-9-11 2797 Lassen [Writing illegible] Susanville Comment
  JEPS127173  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-15 21212 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC115562  Plagiobothrys hispidulus Lowell Ahart; John Dittes 2015-7-13 20318 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
  CAS-BOT-BC224976  Plagiobothrys hispidulus Clarence R. Quick 1962-6-17 62 27 C Lassen Swains Hole, S of Blacks Mountains Experimental Station 1615 Comment
  JEPS87508  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  SJSU8065  Plagiobothrys hispidus J. W. Tilden 1960-6-27 1495 Lassen Westwood 1524 Comment
  CHSC64872  Plagiobothrys leptocladus Vernon H. Oswald; Lowell Ahart 1995-6-19 6896 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  JEPS94132  Plagiobothrys leptocladus Vernon H. Oswald and Lowell Ahart 1998-5-22 9099 Lassen ca. 3 mi. n. Doyle (Hackstaff Rd. 1.0 mi. s.of Laver Crossing Rd., 0.2 mi. n. of Fort Sage Rd.) 1316 Comment
  CHSC99536  Plagiobothrys mollis var. mollis Lowell Ahart; John Dittes 2008-6-20 14921 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  POM71640  Plagiobothrys scouleri var. hispidulus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  JEPS121291  Plagiobothrys stipitatus var. micranthus Lowell Ahart, John Dittes 2013-7-22 18873 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC117209  Plagiobothrys tenellus Lowell Ahart; John Dittes 2016-6-7 21006 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC71079  Plagiobothrys tenellus Vernon H. Oswald; Lowell Ahart 1998-5-22 9093 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 Comment
  UCD124605  Plantago lanceolata P. B. Schultz 1967-7-11 70 Lassen 1 mile south of Milford on U.S. Highway 395. 1325 Comment
  HSC16618  Platanthera dilatata var. leucostachys Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  SJSU9125  Platanthera dilatata var. leucostachys H. L. Buckalew 1961-7-2 Lassen Blue Lake near Blue Lake Road Comment
  UC890150  Plectritis brachystemon C. L. Hitchcock 6604 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  JEPS26653  Plectritis macrocera Lauramay T. Dempster 1961-6-17 1668 Lassen about 4 mi sw of junction w Richmond Road (s of Susanville, Gold Run Creek); Gold Run Creek Comment
  RSA433737  Plectritis macrocera Christopher Davidson 1975-6-7 2754 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC100821  Plectritis macrocera unknown 1890-1 Lassen Milford Comment
  CHSC110312  Pleiacanthus spinosus L. P. Janeway; B. Castro 2012-7-1 10922 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
  HSC79990  Pleiacanthus spinosus William Rothstrom 1975-6-9 Lassen Johnstonville, 0.25 mi. S of Hwy. 395, W of airport Comment
  UC1924563  Poa bulbosa Debra Valov 2006-5-30 2006035 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  SEINET10868155  Poa bulbosa David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17757 Lassen Approx. 12 mi S of Adin on Calif. Hwy 139, in basalt & clay; along edge of road on rolling knol, in Artemisia-Juniper assoc. 1372 Comment
  CAS-BOT-BC255033  Poa compressa John Thomas Howell 1974-7-10 50553 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC255034  Poa compressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49506 Lassen Elysian Valley, W of Janesville 1325 Comment
  RSA115224  Poa compressa Beecher Crampton 1956-7-17 3736 Lassen Ca. 2.5 miles north of Emigrant Gap. 1372 Comment
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Apr 28 2013
  UC589933  Poa compressa Leo Whitney 1935-5-26 3147 Lassen 10 mi e Adin (bank of Ash Creek) Comment
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Jun 24 2009
  RSA716274  Poa cusickii L. Ahart, John Dittes 2005-6-2 11927 Lassen about 1.4 miles west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1499 Comment
  UCD90920  Poa cusickii Leo Whitney 1935-6-19 3265 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CHSC101048  Poa cusickii subsp. cusickii John Dittes 2008-5-22 1525 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace and toe-slope on northeast side of Willow Creek. 483 Comment
  UC1024913  Poa cusickii subsp. cusickii Leo Whitney 1935-6-26 3369 Lassen meadow near Fruit Grower's Supply Company Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  JEPS118453  Poa cusickii subsp. epilis Lowell Ahart, John Dittes 2011-6-20 17507 Lassen Meadow about 40 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  HSC95195  Poa leptocoma subsp. leptocoma Gordon Leppig, J. Cromwell 1997-7-27 629 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  RSA129249  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadows 1524 Comment
  CAS-BOT-BC247322  Poa pratensis David D. Keck 1944-7-8 5448 Lassen 2 mi. E. of Westwood, in wet sod of meadow leading down to Mountain Meadows Reservoir 1524 Comment
  UC1037135  Poa pratensis subsp. pratensis Leo Whitney 1935-5-27 3126 Lassen Bieber Comment
  UC60738  Poa pratensis subsp. pratensis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  POM267991  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  RSA101643  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  UCD90275  Poa secunda A. A. Beetle 1941-6-28 2794 Lassen 10 miles W of Chester, rte 36. Comment
  UCD90323  Poa secunda A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3367 Lassen 5.2 miles E of Bieber, Big Valley. 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-BC247053  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-23 s.n. Lassen Amedee 1219 Comment
  CAS-BOT-BC247054  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CHSC115514  Poa secunda subsp. juncifolia Lowell Ahart; John Dittes 2015-7-14 20331 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
  JEPS70648  Poa secunda subsp. juncifolia Dr. Longbridge 1912-1 Lassen Amadee Comment
  UC1024938  Poa secunda subsp. juncifolia Leo Whitney 1935-6-26 3336 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1037123  Poa secunda subsp. juncifolia Leo Whitney 1935-6-23 3285 Lassen near Camp 10 Fruit Grower's Supply Company Comment
  UCD92368  Poa secunda subsp. juncifolia J. B. Davy 17-24 Jun 1897 s.n. Lassen Honey Lake Valley. Comment
  UCD92385  Poa secunda subsp. juncifolia William Martin 1963-7-18 s.n. Lassen 3-4 miles S of Doyle. Long Valley Creek, Rowland Ranch. Comment
  UCD92408  Poa secunda subsp. juncifolia R. Tofsrud 1947-7-24 225 Lassen Between Ravendale and Thermos. Comment
  HSC10738  Poa secunda subsp. secunda R. S. White 1965-5-15 74 Lassen 10 mi. W of Susanville on Hwy. 36 Comment
  SEINET7294129 Image available Poa secunda subsp. secunda John Thomas Howell, Gordon H. True; Margaret Williams 1973-1 49197 Lassen In open yellow pine forest, Elysian Valley northwest of Janesville. 1326 Comment
  UC1132880  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 734 Lassen 5.7 mi ssw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC584341  Poa secunda subsp. secunda G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2322 Lassen ca 1 mi below summit Black Mt 1940 Comment
  UCD90487  Poa secunda subsp. secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles W of Chester. 1524 Comment
  UCD91638  Poa secunda subsp. secunda A. L. Hormay 1941-6-26 37 Lassen Lassen National Forest. Pine Creek, Bogard Ranger Station. 1706 Comment
  UCD92017  Poa secunda subsp. secunda A. H. Shunk 1923-8-20 s.n. Lassen Madeline. Comment
  HSC68792  Poa wheeleri Gary Schoolcraft 1979-7-3 112 Lassen 4.3 mi. up Observational Lookout Rd. from Horne Ranch Rd. 2134 Comment
  CHSC60906  Pogogyne floribunda Vernon Oswald; Lowell Ahart 1993-7-8 5669 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. 1694 Comment
  CHSC60907  Pogogyne floribunda Vernon H. Oswald; Lowell Ahart 1993-7-8 5675 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  RSA104308  Polemonium micranthum Verne Grant, Alva Grant 1956-5-18 21755 Lassen 4 miles S of Ravendale. 1280 Comment
  CHSC27710  Polyctenium fremontii Robert A. Schlising 1978-7-1 3305 Lassen S of Eagle Lake at N side of Mahogany Lake. 2060 Comment
  JEPS13801  Polyctenium fremontii Dr. Loughridge 1912-1 Lassen Madeline Plains Comment
  CAS-BOT-BC74171  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Highway 395. 1609 Comment
  CDA20360  Polyctenium fremontii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; No other data provided. 0 Comment
  SEINET10838602  Polyctenium fremontii Arnold J. Tiehm 1988-6-2 Tiehm 11703 Lassen 6.6 mi. N. Of the wendel rd on hwy 395 from susanville to alturas, mud flats along the hwy, t30n, r15e, sec 15. Plants growing with artemesia ant the edge of silty flats which were inundated earlier in the year. Petals white to pink. Comment
  SEINET3035191 Image available Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  UC1537257  Polygonum amphibium var. emersum Gordon H. True 1936-6-22 514 Lassen Honey Lake Valley; deep slough 1219 Comment
  JEPS28700  Polygonum amphibium var. stipulaceum George W. Gillett 1957-7-26 921 Lassen Butte Lake Lassen Volcanic National Park (in shallows near campground area) 1844 Comment
  NY652201  Polygonum amphibium var. stipulaceum G. Schoolcraft 1996-9-12 2571 Lassen In Willow Creek north of Susanville 1493.5 Comment
  CHSC59094  Polygonum aviculare Vernon H. Oswald; Lowell Ahart 1992-8-25 5191 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. Locally common in wet, muddy volcanic gravel on the drying strand of the lake. 1851 Comment
  UC465777  Polygonum californicum T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CHSC60762  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  CHSC84438  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  JEPS104432  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, ca 1/4 mile southwest of the Susan River, ca 8 miles (air) southwest of Susanville. 1433 Comment
  POM104446  Polygonum persicaria Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC419858  Polygonum polygaloides subsp. confertiflorum John Thomas Howell 1973-7-10 49762 Lassen Near Westwood 1554 Comment
  CHSC58850  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 a Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  CHSC66256  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1996-6-24 7856 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Locally abundant near a ditch on the W side of the meadow ca. 0.3 mi S of the cabins. 1633 Comment
  CHSC99126  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  JEPS120876  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18732 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC419859  Polygonum polygaloides subsp. confertiflorum George W. Gillett 1957-7-22 874 Lassen Lassen Volcanic National Park. Snag Lake. 1850 Comment
  CHSC29856  Polygonum polygaloides subsp. kelloggii Robin L. Ondricek 1978-7-5 81 Lassen In grass and among trees along the ne edge of Mahogany Lake. 2057 Comment
  UC1609438  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd (Lassen A1) 0.5 mi w Spaulding Tract Rd. (Rd. 518, 33N89) (ca 3 mi w of Eagle Lake) 1810 Comment
  UC1037194  Polygonum shastense Leo Whitney 1934-9-16 1512 Lassen Lassen Peak; s side 2560 Comment
  CAS-BOT-BC420978  Polygonum spergulariiforme Alice Eastwood; John Thomas Howell 1940-6-11 7976 Lassen Big Valley Mts. Comment
  CAS-BOT-BC232546  Polypogon monspeliensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16346 Lassen Along margin of drainage gulley below reservoir, N of road 13.5 miles E of Susanville Comment
  CHSC110900  Polypogon monspeliensis Lowell Ahart; John Dittes 2012-7-9 18300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  UC50635  Polypogon monspeliensis J. Burtt Davy Jun 17 1897-Jun 24 1897 3351 Lassen Honey Lake Valley Comment
  CHSC52131  Populus fremontii Detzer; Sacks 1977-7-1 3 Lassen Ca. 3 mi se Milford, .5 mi se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  CHSC13649  Porterella carnosula M. S. Taylor 1974-7-13 308 Lassen Abundant along edge of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi ne of Susanville. 1524 Comment
  JEPS17746  Porterella carnosula Rimo Bacigalupi with G. T. Robbins 1955-7-20 5408 Lassen 4.4 mi s Patterson Ranger Station (Long Valley, southern end of Warner Mts., Modoc National Forest); Modoc National Forest, s end of Warner Mts. 2057 Comment
  UC526144  Porterella carnosula John Thomas Howell 1934-7-7 12466 Lassen near Feather Lake; near Feather Lake Comment
  SEINET10460820  Porterella carnosula Taylor 1988-6-6 Taylor 9007 Lassen Road from Bieber to Lookout, 0.5 miles south of the Modoc County Line 1250 Comment
  SEINET10460831  Porterella carnosula Gillett 1957-7-29 GILLETT 938 Lassen Marsh area near west end of lake, on drying mud flats 2073 Comment
  UCD138215  Potamogeton amplifolius Verne Grant; Irving Schneider Date Unknown 8269 Lassen northern part of county. Northwest shore of Blue Lake. 1981 Comment
  CAS-BOT-BC454090  Potamogeton pusillus subsp. tenuissimus Wm. Anderson 1960-6-16 s.n. Lassen Barrow pit along county road 1 mi. nw. of Tanner Ranch, Honey Lake Valley 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
  UC60850  Potamogeton zosteriformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3356 Lassen near Amedee; Honey Lake Valley Comment
  CAS-BOT-BC540030  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake Comment
  CHSC6257  Potentilla glandulosa subsp. ashlandica A. Santos 1946-6-20 Lassen Eagle Lake. Grasshopper valley. 1624 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
  JEPS44512  Potentilla gracilis var. fastigiata Brown and Wieslander 1922-7-30 25 Lassen Martin Springs , Martin Springs (Eagle Lake) Comment
  RSA504625  Potentilla gracilis var. fastigiata Bruce Bartholomew 1988-6-25 4373 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  UC773876  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spring Experiment Range Lassen National Forest 1767 Comment
  CAS-BOT-BC540359  Potentilla gracilis var. fastigiata Alice Eastwood 1912-8-22 1870 Lassen Lassen Butte Region: Morgans Springs Comment
  CAS-BOT-BC540367  Potentilla gracilis var. fastigiata David D. Keck 1930-7-23 956 b Lassen 3 miles east of Westwood 1524 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
  OBI77047  Potentilla millefolia Anthony Baniaga 2011-6-1 296 Lassen Lassen NF. Bogard Work Station helicopter landing ara, W of RR tracks, N of rd to Crater lake. Pine Crk Valley quad T32N R8e sec 33 NE of SW 1737 Comment
  SJSU5833  Potentilla millefolia J. W. Tilden 1960-6-27 1512 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  CAS-BOT-BC158515  Potentilla millefolia Clarence R. Quick 1962-6-17 62 -17 Lassen North of DeLasmutt Ranch, along a dirt road to Black Mountain E.F. Hdqrts. 1615 Comment
  CHSC66731  Potentilla rivalis Vernon H. Oswald; Lowell Ahart 1996-8-1 8103 Lassen Mountain Meadows Reservoir SW of Westwood. In forest bordering the lake NE of Indian Ole Dam. 1539 Comment
  UCD113955  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake. Comment
  CHSC75533  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1999-6-9 9760 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. Roadside. 1645 Comment
  SD149134  Prunella vulgaris var. lanceolata John Thomas Howell, Gardon H. True and Margaret Williams 1973-6-28 49443 Lassen Elysian Valley, west of Janesville. 1326 Comment
  OBI10074  Prunus andersonii H. E. McMinn 1932-8-5 2969 Lassen Susanville to Reno Comment
  SEINET10483438  Prunus andersonii Mary Susan Taylor 1982-5-7 Taylor 4424 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  CAS-BOT-BC154772  Prunus virginiana var. demissa Alice Eastwood; John Thomas Howell 1940-6-11 7994 Lassen Nubieber 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
  CAS-BOT-BC239801  Pseudoroegneria spicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50693 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC239806  Pseudoroegneria spicata James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 mi. ssw. of Karlo 1417 Comment
  UC1483808  Pseudoroegneria spicata subsp. spicata P. Bousier May 1979 Lassen n of Wendel (ner Brubeck Spring) 1554 Comment
  CAS-BOT-BC80093  Pseudotsuga menziesii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49409 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS127273  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2016-7-13 21110 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  NY702516  Psoralidium lanceolatum G. Schoolcraft 1991-6-12 2159 Lassen On Sierra Army Depot north of Herlong 1234 Comment
  JEPS117492  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
  UC1562803  Pterospora andromedea Barbara Ertter 1987-7-25 7319 Lassen Hwy 44 ca 1 mi E of Shasta Co. line 1645 Comment
  SEINET3823221 Image available Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About 2 miles east of Westwood in leaf mold. Transition Life Zone 1524 Comment
  UCD91859  Puccinellia distans Malcolm A. Nobs; S. Galen Smith 1949-7-22 1070 Lassen NE shore of Eagle Lake. Comment
  POM313139  Puccinellia distans Malcolm A. Nobs, S. Galen Smith 1949-7-22 1070 Lassen Northeast shore of Eagle Lake Comment
  JEPS120925  Puccinellia lemmonii Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen In a depression on the S side of the road, on the S side of the McArthur Diversion Canal, 0.32 miles E of the Tule River, 2.8 air miles NW of McArthur, Fall River Valley, McArthur Swamp. Comment
  UCD91890  Puccinellia lemmonii Freed W. Hoffman 1946-5-28 1820 Lassen Beiber. Comment
  CHSC13644  Purshia tridentata M. S. Taylor 1974-6-25 260 Lassen Surrounding meadow, ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  SEINET3394464  Purshia tridentata E. D. McArthur 1982-1 EDM- 1356 Lassen NW of Janesville at Jct of crossroads 205 & 219 Comment
  SEINET7463175  Purshia tridentata F. B. Headley 1905-5-28 s.n. Lassen Honey Lake. Comment
  CHSC105257  Purshia tridentata var. tridentata Lowell Ahart; John Dittes 2010-7-31 17015 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  HSC25758  Purshia tridentata var. tridentata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19293 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS28802  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen ca 50 yds from Widow Lake (near outlet, near trail); Lassen Volcanic National Park 2057 Comment
  UC1128540  Purshia tridentata var. tridentata C. W. Hanks 1934-9-26 91 Lassen w side Long Valley (near Plumas National Forest); Sierraville Quad. 1432 Comment
  UC1128550  Purshia tridentata var. tridentata K. Bradshaw 1939-5-27 234 Lassen Black Mountain Experimental Forest; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC773873  Purshia tridentata var. tridentata L. R. Short and Wm. Gansberg 1936-7-9 S- 482 Lassen Burgess Spring Experimental Range; Lassen National Forest 1792 Comment
  JEPS28673  Pyrola asarifolia George W. Gillett 1957-7-24 900 Lassen Cameron Meadow 1950 Comment
  CAS-BOT-BC462880  Pyrola asarifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 Comment
  CAS-BOT-BC462758  Pyrola dentata Louella Bass 1973-6-23 EU- 130 Lassen Elysian Valley 1325 Comment
  UC1609363  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald and Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd (Lassen 111, 36N01) 3.0 mi n Hwy 44 (ne of Poison Lake) 1709 Comment
  JEPS19176  Pyrrocoma hirta var. lanulosa Leland S. Smith 1922-1 18 Lassen Windmill flat, nw Lassen County Modoc National Forest Comment
  RSA88088  Pyrrocoma racemosa var. paniculata J. T. Howell 1951-8-20 28227 Lassen Honey Lake Valley near Herlong 1280 Comment
  UC21043  Pyrrocoma racemosa var. paniculata J. Burtt Davy Jun 17 1897-Jun 24 1897 3380 Lassen Honey Lake Valley Comment
  JEPS37795  Quercus kelloggii W. L. Jepson 1939-8-11 19371 Lassen Milford 1280 Comment
  RSA715982  Quercus kelloggii L. Ahart, John Dittes 2005-6-2 11942 Lassen 1.5 miles NE of the Anderson Ranch home, Long Valley, 6 miles (air) N of intersection of Scott Road and Hwy 70, 7.5 miles (air) NW of Hallelujah Jct. 1602 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
  CAS-BOT-BC379415  Ranunculus alismifolius var. alismellus George W. Gillett 1957-7-21 869 Lassen Juniper Lake-Cameron Meadow trail; wet meadow 300 yards north of trail summit 2118 Comment
  SD8185  Ranunculus alismifolius var. alismellus Mrs. R. M. Austin Aug 1882 Lassen King's Valley Comment
  CHSC71322  Ranunculus alismifolius var. davisii Vernon H. Oswald 1998-6-22 9230 Lassen Champs Flat Rd. (A-21) 1.8 mi north of Hwy. 44, ca. 18 air mi north of Westwood. 1749 Comment
  RSA399361  Ranunculus alismifolius var. hartwegii Christopher Davidson 1975-6-6 2720 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  CHSC61174  Ranunculus alismifolius var. lemmonii Vernon H. Oswald; Lowell Ahart 1993-5-12 5380 Lassen Canal crossing Hwy. 44, 3.5 mi NW of A21 (to Westwood). On the N side of the road and on the E side of the canal. 1729 Comment
  CHSC7729  Ranunculus alismifolius var. lemmonii Beverley J. Wise 1969-3-4 86 Lassen 7 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1524 Comment
  CHSC112752  Ranunculus aquatilis var. diffusus Lowell Ahart; John Dittes 2013-7-23 18891 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  NY493018  Ranunculus aquatilis var. diffusus P. H. Raven 1958-6-19 13256 Lassen In a pond along United States Highway 395, 7.1 miles west of Standish 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
  JEPS55056  Ranunculus cymbalaria var. saximontanus W. L. Jepson 1918-8-2 7768 Lassen Beckwith Pass; below spring 1463 Comment
  RSA293370  Ranunculus cymbalaria var. saximontanus Reino Alava 1957-7-5 1135 Lassen Along Highway no. 395, 4.4 miles S of Ravendale. Comment
  UC1191440  Ranunculus flammula Verne Grant and Irving Schneider 1947-8-24 8267 Lassen Blue Lake; nw shore, n Lassen Co. Comment
  CHSC14062  Ranunculus glaberrimus var. ellipticus Tim Manolis 1974-2-16 16 Lassen 2 1/4 mi e of Eagle Lake Field Station. Comment
  UC506988  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  RSA0062681  Ranunculus occidentalis Marion P. Harthill 1972-6-17 825 Lassen Madeline. 1676 Comment
  NY494767  Ranunculus occidentalis var. dissectus H. D. D. Ripley 1943-6-13 5682 Lassen Near Milford 1264.9 Comment
  NY494769  Ranunculus occidentalis var. ultramontanus W. W. Eggleston 1911-5-29 6759 Lassen Vicinity of Doyle Station 1290 Comment
  JEPS55022  Ranunculus orthorhynchus var. orthorhynchus Brown and Wieslander 1922-7-30 13 Lassen Martin Sprs. Eagle Lake Comment
  CDA3488  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville. 0 Comment
  OBI5233  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville 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
  CHSC60392  Ranunculus uncinatus var. uncinatus Mary Ann Showers 1992-6-13 2539 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  CAS-BOT-BC362887  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01 Comment
  UC870780  Rhamnus californica C. L. Hitchcock 1940-5-26 6619 Lassen ca 12 mi n Fall River Mills; Fall River 1371 Comment
  SEINET10871347  Ribes Mary Susan Taylor 1974-5-4 Taylor 223 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
  JEPS114691  Ribes aureum var. aureum Lowell Ahart, John Dittes 2008-6-20 14950 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC93390  Ribes cereum George W. Gillett 1957-7-26 916 Lassen Lassen Volcanic National Park. Butte Lake. 1844 Comment
  UC465786  Ribes cereum Franklin P. Nutting 1894-7-5 Lassen Dixie Valley Comment
  UCR17254  Ribes cereum Frank C. Vasek 1975-7-11 750711- 18 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC93389  Ribes cereum Hans Leschke 1960-8-10 1782 Lassen Lassen National Park. Near Badger Flat. 1912 Comment
  CAS-BOT-BC169007  Ribes hudsonianum L. S. Smith 1918-8-13 1033 Lassen Lost Lake, Silver Creek, Modoc National Forest 2286 Comment
  UC75460  Ribes inerme var. inerme Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CAS-BOT-BC212656  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile E of Fredonyer Pass Comment
  SEINET10838520  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 309 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CDA25586  Ribes velutinum J. R. Keck Jr. 1977-8-1 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  OBI75884  Ribes velutinum Anthony Baniaga 2011-7-1 414 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  UC485203  Rigiopappus leptocladus Franklin P. Nutting Lassen Dixie Valley Comment
  SEINET3148575  Rigiopappus leptocladus L. S. Rose 1940-6-11 40507 Lassen 8 mi W of Nubieber 1219 Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  CHSC13796  Rorippa nasturtium-aquaticum Cathy Crittenden 1970-7-8 31 Lassen Lower Murrer's Meadow; by Willow Creek. 1463 Comment
  CHSC30577  Rorippa nasturtium-aquaticum Sori H. Shad 1970-6-24 42 Lassen In upper Murrer's Meadow, in irrigation ditch. 1524 Comment
  CHSC36490  Rorippa nasturtium-aquaticum Theresa Costa 1982-6-4 36 Lassen Along Willow Creek in Murrers Upper Meadow. Comment
  JEPS95970  Rorippa nasturtium-aquaticum Vernon H. Oswald and L. Ahart 1999-6-9 9736 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395: T31N R15E NW1/4 Sect. 2, 4440 ft elevation, springy marsh surrounded by sagebrush scrub 1353 Comment
  UC1536933  Rorippa nasturtium-aquaticum Gordon H. True Jr. 1936-6-26 547 Lassen e Eagle Lake (head of Willow Creek); , e of Eagle Lake 1584 Comment
  NY182161  Rorippa sinuata G. Schoolcraft 1983-6-22 1018 Lassen Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  CHSC99109  Rosa woodsii subsp. ultramontana Lowell Ahart; John Dittes 2008-6-20 14972 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SBBG3088  Rosa woodsii subsp. ultramontana H. and M. Dearing 1939-6-6 3562 Lassen Bieber Comment
  CAS-BOT-BC148258  Rosa woodsii var. ultramontana Louella Bass 1973-5-29 EV- 68 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  CAS-BOT-BC148389  Rubus leucodermis Louella Bass 1973-5-29 EV- 53 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  JEPS28684  Rubus leucodermis George W. Gillett 1957-7-26 914 Lassen e shore Butte Lake Lassen Volcanic National Park, Butte Lake 1844 Comment
  JEPS117592  Rumex acetosella 2010-7-31 17001 Lassen About 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin 1516 Comment
  CAS-BOT-BC421953  Rumex acetosella Paul Gallian; B. J. Cox 1971-6-2 482 Lassen 5 miles South of Milford near Honey Lake on U.S. Hwy. 395 1249 Comment
  CAS-BOT-BC421954  Rumex acetosella Margaret Williams; Louella Bass 1972-10-22 EV 5 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  UC748311  Rumex crispus Annie M. Alexander and Louise Kellogg 1946-8-11 5151 Lassen Madeline Comment
  CHSC112393  Rumex salicifolius Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18774 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC67689  Rumex salicifolius var. lacustris James D. Jokerst 1983-7-25 1891 Lassen Madeline Plains W of Termo. Comment
  RSA0105589  Rumex triangulivalvis Lowell Ahart, John Dittes 2013-7-22 18867 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC109417  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia. Comment
  JEPS74706  Rumex venosus Wayne Roderick 1969-5-24 Lassen along Hwy 395 near Janesville Comment
  UC1776705  Rumex venosus G. Schoolcraft 1993-6-1 2267 Lassen Along Hwy 395 about 1.5 mi. n. of turnoff to Wendel 1280 Comment
  CAS-BOT-BC445707  Sagittaria latifolia B. Anthony 1967-7-8 s.n. Lassen Murrer's Meadow, ca 3 mi. from Eagle Lake Biological Station 1493 Comment
  UCD149941  Sagittaria latifolia William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CAS-BOT-BC103456  Salix eastwoodiae G. Schoolcraft 1997-8-6 2666 Lassen Diamond Mtn. 2316 Comment
  HSC95346  Salix eastwoodiae Gordon Leppig, J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  JEPS107443  Salix exigua Lowell Ahart, John Dittes 2005-6-1 11905 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  NY187518  Salix hindsiana N. F. Bracelin 1931-6-29 485 Lassen McArthur 960 Comment
  CAS-BOT-BC128171  Salix lasiandra var. lasiandra John Thomas Howell; Gordon H. True 1973-7-31 50042 Lassen On road from Janesville to Thompson Peak, Diamond Range - Sierra Nevada 1783 Comment
  JEPS107868  Salix lasiandra var. lasiandra Lowell Ahart, John Dittes 2005-6-2 11925 Lassen Long Valley, along a small ditch, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CAS-BOT-BC106963  Salix lasiolepis G. Schoolcraft 1999-5-7 2819 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  CAS-BOT-BC106964  Salix lasiolepis G. Schoolcraft 1999-5-7 2820 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  RSA746513  Salix lasiolepis K. M. Meyer, A. Townesmith 2007-7-19 138 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  RSA0045640  Salix lasiolepis var. lasiolepis Lowell Ahart, John Dittes 2008-6-22 15044 Lassen On the south side of the road levee, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4, miles (air) northeast of Bieber. 1257 Comment
  CAS-BOT-BC124637  Salix lemmonii M. B. Kildale 1926-9-11 2788 Lassen Susanville 1524 Comment
  UC433175  Salix lemmonii Franklin P. Nutting 1900-7-28 Lassen Bridge Creek Comment
  POM107066  Salix melanopsis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC126131  Salix scouleriana John Thomas Howell; Gordon H. True 1973-7-31 50041 Lassen On road from Janesville to Thompson Peak, Diamond Range 1783 Comment
  JEPS96090  Salix scouleriana Vernon H. Oswald and Lowell Ahart 1996-6-17 7770 Lassen on n side of Hwy 36 ca 0.2 mi e & mile post (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1432 Comment
  CDA37714  Salsola paulsenii Breckenridge/Filippini 2007-6-14 s.n. Lassen Wendell Plains. 0 Comment
  CHSC5274  Salvia aethiopis 1944-6-18 Lassen Eagle Lake. Susanville roadside. Comment
  CHSC64790  Salvia dorrii var. dorrii Vernon H. Oswald 1995-5-24 6757 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1280 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
  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
  RSA537728  Sambucus microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  POM90118  Sanguisorba annua Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC1598734  Sanicula tuberosa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CHSC30628  Sarcobatus vermiculatus T. M. Lane 1975-7-7 35 Lassen SE of Horse Lake Rd, on se shore of Horse Lake; 19 km nne of Susanville. 1508 Comment
  JEPS59876  Sarcobatus vermiculatus W. L. Jepson 1918-8-4 7805 Lassen Horse Lake 1554 Comment
  UC1537040  Sarcobatus vermiculatus Gordon H. True Jr. 1936-6-21 519 Lassen Honey Lake Valley 1219 Comment
  UC1542944  Saxifraga nidifica var. nidifica G. Schoolcraft 1987-4-29 1685 Lassen Lonkey Hill 1432 Comment
  CAS-BOT-BC283086  Schedonorus arundinaceus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49474 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  RSA300132  Schedonorus arundinaceus J. T. Howell, Gordon H. True 1973-8-1 50185 Lassen Gold Run Creek Road, south of Susanville, Diamond Range 1585 Comment
  UC1567432  Schoenoplectus acutus var. occidentalis G. Schoolcraft 1989-7-31 1998 Lassen along A27 about 8 mi e Susanville; e of Susanville 1243 Comment
  CAS-BOT-BC111215  Scirpus John Thomas Howell 1976-7-19 51967 Lassen Transition forest on Gold Run Creek southwest of Susanville 1386 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
  UC1100770  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1947-7-9 13298 Lassen irrigation ditch 5 mi e Bieber; e of Bieber Comment
  UC2119  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3291 Lassen beside sloughs Honey Lake Valley, beside sloughs Tule Confederacy (Tule Confederacy, Honey Lake Valley) Comment
  SEINET3815589 Image available Scirpus microcarpus Marcus E. Jones 1897-1 Lassen Susanville 1341 Comment
  UC1100881  Scirpus nevadensis Verne Grant and Irving Schneider 1947-9-5 8376 Lassen nw shore Eagle Lake (by Sam Webb's place; Spaulding); nw shore Eagle Lake by Sam Webb's place Comment
  JEPS63795  Scirpus pungens W. L. Jepson 1918-8-2 7785 Lassen 1 mi below Boni Ranch house (lower bench of Long Valley Creek); Long Valley 1371 Comment
  SEINET8020059  Scutellaria angustifolia subsp. micrantha C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  CAS-BOT-BC214261  Scutellaria nana G. Schoolcraft 1999-7-7 2855 Lassen N. end of Eagle Lake just ne. of Eagle Lake Campground 1584 Comment
  JEPS88204  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1996-6-24 7863 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, on w side of Papoose Meadows 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  RSA128297  Scutellaria nana Peter H. Raven, Otto T. Solbrig 1958-6-17 13270 Lassen Along U.S. Highway 395, 19.0 miles south of Ravendale. Comment
  RSA719468  Scutellaria nana L. P. Janeway 2005-4-7 84614 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 534 Comment
  UC506981  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest 1722 Comment
  RSA647520  Secale cereale Marion P. Harthill 1972-6-16 788 Lassen Doyle 1372 Comment
  NY758141  Sedum lanceolatum J. T. Howell 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2286 Comment
  RSA712935  Senecio aronicoides L. P. Janeway 2005-7-4 8471 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC1136809  Senecio aronicoides L. R. Short and Wm. Gansberg 1936-6-2 S- 355 Lassen Burgess Spr. Exp. Range Lassen Forest 1865 Comment
  CAS-BOT-BC363326  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen West of Fredonyer Pass 1676 Comment
  CHSC54176  Senecio hydrophiloides Vernon H. Oswald 1991-5-28 4628 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. Meadow. 1267 Comment
  SEINET10799222  Senecio integerrimus Paul Gallian, David B. Dunn 1971-6-2 Gallian 504 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
  CHSC23517  Senecio integerrimus var. exaltatus Wayne O. Baum 1971-6-28 71 -18 Lassen E. slope of Gallatin Peak. 1920 Comment
  CHSC64759  Senecio integerrimus var. exaltatus Vernon H. Oswald 1995-6-7 6843 Lassen High Cascade Range. Hwy 36, 5.5 mi e of Westwood. Along the se edge of McKenzie Mdws., on the n side of the road. 1584 Comment
  CHSC68736  Senecio integerrimus var. exaltatus Vernon H. Oswald; Lowell Ahart 1997-5-27 8508 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. Between the road and a small creek paralleling the road on the north. 1560 Comment
  UC1137289  Senecio integerrimus var. exaltatus K. E. Bradshaw 1939-5-27 239 Lassen Black Mt. Experimental Forest, Plot 39-1 Lassen Forest 1767 Comment
  UC1608996  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1993-6-3 5480 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y) where it diverges from Lassen 21 (32N02) to Eagle Lake (s side of valley, between Poison Lake and Susanville); Pine Creek Valley 1725 Comment
  CAS-BOT-BC363857  Senecio integerrimus var. exaltatus Elmer I. Applegate 1934-5-4 8937 Lassen 15 miles south of Ravendale Comment
  RSA0125038  Senecio integerrimus var. exaltatus A. A. Heller 1938-6-4 15143 Lassen In the yellow pine forest west of Fredonyer pass on State Highway #36. 1737 Comment
  RSA0013303  Senecio serra var. serra Bruce Bartholomew, B. Anderson 1988-7-22 4496 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC1562885  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  CHSC76260  Sesuvium verrucosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8217 Lassen Field about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  SEINET10788334  Setaria viridis Lowell Ahart 2010-8-31 Ahart 17139 Lassen T39N, R8E, southwest 1/4 section 35. About 1/4 of a plant, on damp good soil, moisture from irrigation, on the east side of Walters Road, 4235 feet south of Modoc County line, about 4.3 miles (air) south-southwest of Adin, about 7.0 miles (air) northeast of Bieber, Big Valley. Common. 1277 Comment
  CHSC83236  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). Streambed. 1950 Comment
  POM84786  Sidalcea oregana subsp. spicata Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  SEINET246897  Sidalcea oregana var. maxima Unknown 1988-6-2 11704 Lassen East side of Snowshoe Mt., 18.1 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west side of the highway. 1402 Comment
  UC1523760  Silene bernardina Gary Schoolcraft 1982-6-23 727 Lassen Ft. Sage Mts. 1828 Comment
  SEINET8223955  Silene menziesii Richard R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  RSA666396  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  CAS-BOT-BC75079  Sisymbrium altissimum Louella Bass 1973-5-25 46 Lassen Sierra Nevada. Elysian Valley. 1325 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
  HSC102778  Sisyrinchium bellum L. Ahart, John Dittes 2008-6-20 14964 Lassen About 7.0 air mi. NE of Bieber, ~4.0 air mi. NE of Headquarters at Ash Creek State Wildlife Area; ~ 10 yds. west of where the levee road crosses Big Valley Canal, in Big Valley. 1264 Comment
  UCD138789  Sisyrinchium bellum Gerald Dickinson 1963-7-2 71 Lassen east of Willow Creek campground, south of Hayden Hill, State Highway 139. 1219 Comment
  CHSC7183  Sisyrinchium douglasii Lynn R. Thomas 1969-4-18 103 Lassen On bluff directly behind Lassen Memorial Hospital (area of old city dump), Susanville. (USGS 'Susanville') 1341 Comment
  HSC21315  Solanum triflorum D. E. Anderson 1962-8-6 2331 Lassen Lake at foot of Tule Mtn. Comment
  CDA8717  Solidago californica Gary Schoolcraft 1994-8-29 2426 Lassen About 1 mile west of Susanville up Piute Creek. Comment
  UC1776708  Solidago velutina subsp. sparsiflora G. Schoolcraft 1994-8-3 2416 Lassen About 1 mile S of Boot Lake 1889 Comment
  CHSC116096  Sonchus asper subsp. asper Lowell Ahart; John Dittes 2015-7-13 20304 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
  SBBG3122  Sorbus sitchensis H. and M. Dearing 1939-6-12 3644 Lassen S of Lassen Comment
  CAS-BOT-BC236547  Sorghum halepense Louella Bass 1980-7-29 EV 5 -80 Lassen Elysian Valley, Hwy. 395 at County Road 207, near Jamesville, Sierra Nevada Comment
  HSC95259  Sparganium emersum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 529 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC65371  Sparganium emersum subsp. emersum Vernon H. Oswald 1995-8-21 7212 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. At SW corner of the lake. 1859 Comment
  UC1099936  Sparganium emersum var. emersum Verne Grant and Irving Schneider 1947-8-24 8271 Lassen nw shore Blue Lake (n Lassen County) Comment
  CAS-BOT-BC213213  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Standish Comment
  CAS-BOT-BC213214  Sphaeralcea grossulariifolia P. Monnet 1913-7-1 803 Lassen Hot Spring Peak 1524 Comment
  HSC68557  Sphaeromeria cana Gary Schoolcraft 1979-7-6 127 Lassen N side of Skedaddle Mtns. 1997 Comment
  POM82495  Sphenosciadium capitellatum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC383109  Spiraea douglasii Andrew Townesmith; Karen M. Meyer 2007-7-20 840 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 1429 Comment
  POM101721  Stellaria longipes F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  CHSC4946  Stellaria longipes var. longipes R. Carter 1967-6-23 550 Lassen In meadow, 25 yds w of dam in Murrer's Meadow. 1584 Comment
  JEPS107846  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2005-6-2 11992 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  JEPS114768  Stellaria longipes var. longipes Lowell Ahart, John Dittes 2008-6-20 14956 Lassen 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
  CHSC68737  Stenotus acaulis Vernon H. Oswald; Lowell Ahart 1997-5-27 8507 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. Between the road and a small creek paralleling the road on the north. 1560 Comment
  CHSC77201  Stenotus lanuginosus G. Schoolcraft 1993-6-10 2294 Lassen Along Clark's Valley Rd. s. of Red Rock Lake. 1828 Comment
  JEPS36876  Stephanomeria lactucina Brown and Wieslander 1922-7-19 40 Lassen Martin Springs Eagle Lake Comment
  POM33607  Stephanomeria spinosa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC23504  Stephanomeria tenuifolia Wayne O. Baum 1971-7-19 71 -76 Lassen E. slope of Gallatin Peak. 2072 Comment
  SEINET8512762  Stipa thurberiana A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1093 Lassen Costantia Allotment. Highway 395 North into California, then right on paved entrance road before Red Rock Road and red rock formation, follow road right (South), then left (East) at top of first hill, go in roughly 0.5 miles, population is along roadside 1461 Comment
  OBI22293  Stipa webberi Robert F. Hoover 1940-9-29 4647 Lassen Pass between Shaffer Mt and Warren Peak Comment
  SEINET10448890  Streptanthus cordatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 470 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  HSC23510  Stuckenia pectinata R. Carter 1967-7-13 594 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  JEPS120473  Suaeda nigra L. P. Janeway, B. Castro 2012-7-2 10925 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. Comment
  NY541219  Suaeda nigra G. Schoolcraft 1998-9-14 2807 Lassen Flat near Amedee Hot Springs 1219.2 Comment
  UC585195 Image available Swertia albicaulis var. albicaulis E. B. Babcock and G. L. Stebbins Jr. 1936-6-8 1790 Lassen about 2 mi n Madeline; ; Madeline, Lassen Co. 1371 Comment
  CHSC27669  Swertia albicaulis var. nitida Robert A. Schlising 1978-7-9 3312 Lassen S of Eagle Lake; forested area between Papoose Meadows and Eagle Lake Road. Comment
  POM68227  Symphoricarpos acutus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CHSC67077  Symphoricarpos rotundifolius var. rotundifolius Jeanne Boze 1981-6-12 120 Lassen 1/4 mi. south of Eagle Lake Field Station. 1615 Comment
  JEPS88239  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7801 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, edge of trail ca. 0.2 mi. e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  CDA42242  Symphoricarpos rotundifolius var. rotundifolius Gordon Leppig, T. LaBanca 1998-7-13 964 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  UCR18738  Symphoricarpos vaccinioides Frank C. Vasek 1975-7-11 750711- 26 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  UC773956  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1792 Comment
  CAS-BOT-BC97526  Symphyotrichum ascendens Margaret Williams; Louella Bass 1972-10-22 EV 4 Lassen Elysian Valley, northwest of Janesville 1325 Comment
  CAS-BOT-BC97605  Symphyotrichum campestre James Jokerst 1983-7-23 1867 Lassen Grasshopper Valley Quad. Near Madeline Plains 1614 Comment
  RSA518560  Symphyotrichum foliaceum var. foliaceum George K. Helmkamp 1990-9-23 G- 12 Lassen N of Ravendale 1677 Comment
  JEPS95902  Symphyotrichum frondosum Lowell Ahart and Vernon H. Oswald 1999-9-13 8210 Lassen just S of the parking area, about 1 mi S of the sign in station, Honey Lake Wildlife Area, 5 1/2 mi (air) SE of Standish 1207 Comment
  UC762726  Symphyotrichum frondosum R. F. Hoover 1940-10-1 4660 Lassen near, between Janesville and Standish Honey Lake Comment
  CAS-BOT-BC98540  Symphyotrichum spathulatum Louella Bass 1973-6-6 99 Lassen Sierra Nevada - Elysian Valley 1325 Comment
  CHSC59074  Symphyotrichum spathulatum var. yosemitanum Vernon H. Oswald; Lowell Ahart 1992-8-25 5179 Lassen Lassen Volcanic National Park. Opening in forest on the W side of the trail ca. 0.1 mi NW of Cameron Meadow, between Juniper and Snag Lakes. 1950 Comment
  CAS-BOT-BC221915  Taeniatherum caput-medusae Arnold Tiehm; Raymond Evans; James Young 1984-6-7 8597 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1386 Comment
  SEINET230291  Taeniatherum caput-medusae A. Tiehm, J Young; R. Evans 1984-6-7 8597 Lassen NW side of Shaffer Mtn 9 airmi NNW of Litchfield 1387 Comment
  CHSC12455  Taraxia tanacetifolia Robert W. Severin 1969-6-27 39 Lassen 2/3 mi n E.L.B.S. in meadow. 1557 Comment
  CHSC36454  Taraxia tanacetifolia Susan H. Euing 1982-6-6 8 Lassen Pine Creek below fish trap. Comment
  CHSC4928  Taraxia tanacetifolia L. G. Bennett 1967-6-28 55 Lassen North end of Murrers meadow, near Eagle Lake. 1493 Comment
  CHSC7773  Taraxia tanacetifolia Beverley J. Wise 1969-5-18 70 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On the east side of Willow Creek. 1524 Comment
  JEPS94547  Taraxia tanacetifolia Vernon Oswald and Lowell Ahart 1997-6-24 8623 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52, 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  SEINET5345198  Taraxia tanacetifolia M. J. Williams 1974-7-26 74 -L-24 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UC1523755  Taraxia tanacetifolia Gary Schoolcraft 1981-8-11 557 Lassen Said Valley Reservoir 1615 Comment
  SJSU4286  Taraxia tanacetifolia R. L. Fisher 1958-6-16 Lassen c. 6 mi S of Madeline Comment
  CAS-BOT-BC329045  Tetradymia canescens Elmer I. Applegate 1897-6-4 851 Lassen Madeline Plains Comment
  CAS-BOT-BC329050  Tetradymia canescens John Thomas Howell; Gordon H. True; Wayne Daken 1974-7-30 50678 Lassen summit ridge of Diamond Mtn. 2346 Comment
  SJSU5619  Tetradymia canescens V. Hardham 1965-7-13 139 Lassen Pit R Falls 1066 Comment
  UCR244047  Tetradymia spinosa Jim Andre 1993-6-1 19717 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment