Search Results — 2000 specimen records retrieved (1625 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
  CHSC13794  Abies magnifica Cathy Crittenden 1970-7-9 39 Lassen 2 1/2 miles east of Antelope Mtn. lookout on road to Eagle Lake Resort. 1981 Comment
  UC1196917  Abies magnifica var. magnifica A. W. and M. Kildale 1926-9-1 2725 Lassen 11 mi n Chester; Lassen National Park, Juniper Lakes 2054 Comment
  CAS-BOT-BC330610  Acer glabrum var. glabrum Clare B. Hardham 1969-8-28 17438 Lassen Sierra Nevada. West of Janesville. Comment
  JEPS94537  Acer glabrum var. torreyi Vernon Oswald and Lowell Ahart 1997-6-24 8607 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain, along Forest Road 29N43, 5.4 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1889 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-BC28647  Achillea millefolium John Thomas Howell 1976-7-19 51958 Lassen SW of Susanville on Gold Run Road 1341 Comment
  CHSC13640  Achillea millefolium M. S. Taylor 1974-7-10 286 Lassen Abundant in meadow ca. 1/2 mi s of Eagle Lake, ca. 2 mi e of Gallatin Beach, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC23526  Achillea millefolium Wayne O. Baum 1971-7-20 71 -53 Lassen N. slope of Gallatin Peak. 2011 Comment
  UC1136758  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley 1700 Comment
  UC506997  Achillea millefolium George A. Fisher and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley; Lassen Natl. Forest Comment
  CAS-BOT-BC28649  Achillea millefolium Lassen 1927 G. S. Crew 1927-7-15 78 Lassen Lassen County 1725 Comment
  SEINET11842145  Achillea millefolium Unknown 1978-1 30 Lassen Willard Creek, 2 mi S of Hwy 36 at Forest Service campsite. T29N, R10E, sec. 24 1500 Comment
  CAS-BOT-BC260404  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near E side of saddle ca 0.8 mile NE of Meadowview Peak 1981 Comment
  UC1131588  Achnatherum hymenoides E. Sawyer 1935-6-27 232 Lassen Long Valley Sierraville Quadrangle Comment
  CAS-BOT-BC210660  Achnatherum lemmonii John Thomas Howell 1973-7-10 49774 Lassen Fredonyer Pass 1737 Comment
  SEINET249775 Image available Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen 4.5 miles west of Susanville, along state highway 36. 1433 Comment
  UCD50597  Achnatherum lemmonii Beecher Crampton 1954-7-5 2054 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  CAS-BOT-BC110708  Achnatherum nevadense G. Schoolcraft 1997-6-26 2600 Lassen Large knob between Milford and Janesville. 1676 Comment
  CAS-BOT-BC216848  Achnatherum occidentale Clarence R. Quick 1961-6-21 61 -31 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest NE of Lassen Peak 1798 Comment
  SEINET7593424 Image available Achnatherum occidentale John Thomas Howell 1934-1 12431 Lassen Hall's Flat Comment
  CHSC109530  Achnatherum occidentale subsp. californicum B. Castro; L. P. Janeway 2003-10-5 1459 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail between Cone Lake and Triangle Lake, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  RSA129521  Achnatherum occidentale subsp. californicum L. R. Short, Wm Gansberg 1936-6-2 S- 366 Lassen MDM, Burgess Spr. Exp. Range 1859 Comment
  UC1143047  Achnatherum occidentale subsp. californicum L. R. Short and W. Gansberg 1936-6-2 S- 3666 Lassen Burgess Spring Experimental Range Lassen National Forest 1858 Comment
  UCD51042  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3296 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UC717977  Achnatherum occidentale subsp. occidentale David D. Keck 1944-7-8 5451 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada, Susan River 1341 Comment
  CAS-BOT-BC218616  Achnatherum occidentale subsp. pubescens Margaret Williams; Steven Williams 1974-7-26 74 -L-37 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  UC1024910  Achnatherum occidentale subsp. pubescens Leo Whitney 3372 a Lassen ca. 13 mi w of upper end of Eagle Lake (Ashurt Mountain); Ashurt Mountain Comment
  UCD51194  Achnatherum occidentale subsp. pubescens L. Whitney 1935-6-24 s.n. Lassen Squaw Valley. Comment
  CHSC29880  Achnatherum thurberianum Robin L. Ondricek 1978-6-8 47 Lassen Ridge E of Lower Dry Lake. 1798 Comment
  UC593456  Achnatherum thurberianum E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1744 Lassen gully on mountain above Red Rock 1420 Comment
  UC769950  Achnatherum webberi R. F. Hoover 1940-9-29 4647 Lassen pass between Shaffer Mt. and Warren Peak Comment
  SEINET5327496  Acmispon americanus var. americanus G. Schoolcraft 1995-6-27 2501 Lassen Cherry Creek 1524 Comment
  CHSC99296  Acmispon denticulatus Lowell Ahart; John Dittes 2008-6-20 14970 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-BC412863  Aconogonon davisiae Ray Hanson 1954-8-23 s.n. Lassen Lassen Park: near Jakey Lake 2112 Comment
  CAS-BOT-BC418769  Aconogonon phytolaccifolium Alice Eastwood 1912-8-22 1878 Lassen Morgans Springs [Morgans Hot Springs, el. 5000 ft.], Lassen Butte Region Comment
  CAS-BOT-BC391590  Actaea Clare B. Hardham 1969-8-28 17451 Lassen Slope west of Janesville Comment
  SEINET11261375  Agastache parvifolia Robert L. Johnson, Mikel R. Stevens 2015-7-10 3929 Lassen 5.6 rd miles west of jct with Hwy 395 beginning on Dawn Dr, then continuing on road to summit of Shaffer Mountain. Ca 16 air mi ene of downtown Susanville.; 0 1910 Comment
  CAS-BOT-BC30236  Ageratina occidentalis Hans Leschke 1959-8-8 1634 Lassen Between Bumpas Hell and Cold Boiling Lake 2407 Comment
  UC468890  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3405 Lassen Chat Long 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
  CHSC59071  Agoseris glauca var. monticola Vernon Oswald; Lowell Ahart 1992-8-25 5181 Lassen Lassen Volcanic National Park. Near Grassy Creek at the S end of Snag Lake, at the junction of Snag Lake-Butte Lake and Snag Lake-Horseshoe Lake trails. 1865 Comment
  JEPS103193  Agoseris grandiflora G. Schoolcraft 2000-6-19 2904 Lassen West of Cold Spring Valley 1706 Comment
  UC29394  Agoseris grandiflora var. grandiflora M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixie Mt. Dixie Mt. Comment
  JEPS94999  Agoseris heterophylla Vernon Oswald and Lowell Ahart 1997-6-24 8601 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  SEINET6738695 Image available Agoseris heterophylla M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 80- 19 -1 Lassen Smoke Creek Rd., 0.1 mile E of Hwy 395 1372 Comment
  POM318656  Agoseris heterophylla var. heterophylla Patricia Wilder 1971-6-20 5053 Lassen About 6 miles southeast of Adin on Adin - Madelaine Road; Modoc National Forest; Cascades mountain range, Cascade River drainage area 1768 Comment
  UCD107495  Agoseris monticola Tim Kuhn 2006-7-18 41 Lassen Eagle Lake Ranger District.. Comment
  CAS-BOT-BC13230  Agoseris monticola Margaret Williams 1974-8-4 74 -L-79 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  CAS-BOT-BC13231  Agoseris monticola G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  JEPS93832  Agoseris parviflora Vernon H. Oswald and Lowell Ahart 1998-6-4 9142 Lassen south of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  UC1776674 Image available Agoseris parviflora G. Schoolcraft 1994-7-7 2365 Lassen About 1 miles west of Boot Lake 219 Comment
  CHSC111270  Agropyron cristatum subsp. pectinatum L. P. Janeway; B. Castro 2012-7-3 10942 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark vol-canic rock. 2012 Comment
  SEINET12950845  Agrositanion saundersii B. L. Wilson, D. Lytjen, N. Otting 2005-7-29 11518 Lassen Smith Flat on Cedar Creek, 6 or 7 miles E of Madeline, N of County Road 510; Blue Door Flat.; 41.08261 -120.34968 1692 Comment
  UC1130661  Agrostis alba H. S. Yates 1936-8-11 6060 Lassen near Red Rock; Susanville Quad. Comment
  CAS-BOT-BC127238  Agrostis exarata Malcom A. Nobs; S. Galen Smith 1949-7-21 1057 Lassen 4 miles north of Madeline. Comment
  HSC95196  Agrostis exarata Gordon Leppig, J. Cromwell 1997-7-27 628 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC1100103  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen 4 mi n Madeline Comment
  UC53515  Agrostis exarata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CAS-BOT-BC139675  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49484 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 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
  CAS-BOT-BC139450  Agrostis hyemalis Leo Whitney 1933-8-4 2228 Lassen Meadow near Sheepshead. 1889 Comment
  CAS-BOT-BC139292  Agrostis idahoensis G. Schoolcraft 1994-8-1 2383 Lassen About 2 miles west of Boot Lake. 2255 Comment
  UCD53299  Agrostis scabra L. Whitney 1933-8-15 s.n. Lassen Meadow near Sheepshead. Comment
  SEINET4342189  Agrostis stolonifera B. L. Wilson, D. Lytjen 2005-7-25 11489 Lassen Deep Creek, near confluence with a smaller stream 1359 Comment
  CHSC77261  Agrostis variabilis G. Schoolcraft 1997-8-6 2662 Lassen Dimond Mtn. 2316 Comment
  CHSC117273  Alisma triviale Lowell Ahart; John Dittes 2016-7-15 21221 Lassen About 50 yards west of the road and about 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS119644  Alisma triviale Lowell Ahart, John Dittes 2012-7-9 18294 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CAS-BOT-BC131926  Allium Mike Vasey 1990-6-30 9060 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road, Modoc National Forest 1500 Comment
  CHSC29895  Allium acuminatum Robin L. Ondricek 1978-7-22 105 Lassen One mi s of Colley Point Overlook on Hwy 139. 1670 Comment
  CAS-BOT-BC459567  Allium acuminatum H. C. Cantelow 1940-5-31 3898 Lassen East of Mc Arthur Comment
  UCD150395  Allium acuminatum Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  SD6424  Allium anceps Mrs. R. M. Austin 1879-1 Lassen No further location information given on label. Comment
  SEINET10899656  Allium anceps Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2572 Lassen 3 miles s of hallelujah jct., On u.s. Hwy. 395, Jct. Of u.s. 395 & Calif. 70; Along roadside and in artemesia - grassland field Comment
  UCD55152  Allium bisceptrum Ellen Dean 2006-5-15 3040 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1245 Comment
  SEINET10472036  Allium campanulatum Mary Merello 1993-6-27 Merello 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  UC1136928  Allium lemmonii L. R. Short 1936-6-10 S- 416 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1798 Comment
  UC843374  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen overflow of Pitt River 1 mi w Bieber; Pitt River Comment
  HSC47288  Allium lemmonii Dale McNeal 1978-5-30 2129 Lassen Beside Hwy. 395, 1.9 mi. S of Ravendale Comment
  HSC67118  Allium lemmonii Dale McNeal 1980-6-1 2338 Lassen Beside Hwy. 139, 32.4 mi. S of junction with Hwy. 299 in Adin Comment
  POM260464  Allium lemmonii C. L. Hitchcock 1940-5-26 6640 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  SEINET3885788  Allium lemmonii D. W. McNeal 1978-5-30 2129 Lassen Beside Highway #395, 1.9 mi. South of Ravendale.; 0 Comment
  CHSC7662  Allium parvum Beverley J. Wise 1969-4-10 139 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  CAS-BOT-BC474049  Allium parvum G. Schoolcraft 1998-4-27 2704 Lassen N. end of Ft. Sage Mtn 1859 Comment
  CAS-BOT-BC474073  Allium platycaule H. D. Ripley; R. C. Barneby 1943-6-14 5733 Lassen Fredonyer Pass 1676 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
  HSC63950  Alopecurus aequalis Teresa Prendusi 1980-7-9 1115 Lassen Horse Camp Spring, approximately 39 mi. N of spring 1707 Comment
  UC1567403  Alopecurus aequalis G. Schoolcraft 1989-7-18 1976 Lassen s. of Clark's Valley Rd. near Buck's Spring 1572 Comment
  UC790958  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 mi. w. Chester (Rte. 36) Comment
  CHSC108017  Alopecurus geniculatus Lowell Ahart; John Dittes 2011-6-20 17504 Lassen In the small stream, about 80 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC71228  Alyssum minus subsp. micranthum Vernon H. Oswald; Lowell Ahart 1998-6-4 9144 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. At the parking area at the end of the spur road. 1389 Comment
  JEPS118269  Alyssum minus subsp. micranthum Lowell Ahart, John Dittes 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UCD54542  Amaranthus californicus Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2727 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  RSA252462  Ambrosia acanthicarpa R. F. Thorne, C. W. Tilforth 1969-9-6 39266 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  SEINET3391171  Amelanchier alnifolia E. D. McArthur 1982-1 EDM- 1360 Lassen NW of Janesville at Jct of Co Ros 205 & 219 Comment
  CHSC29918  Amelanchier alnifolia var. pumila Robin L. Ondricek 1978-5-25 26 Lassen .5 mi S of tunnel crossing on road to Eagle Lake Field Station. 1554 Comment
  RSA38464  Amelanchier pallida Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  JEPS28676  Amelanchier utahensis George W. Gillett 1957-7-26 903 Lassen Butte Lake Lassen Volcanic National Park (point of rocks w of outlet and above trail) 1844 Comment
  CAS-BOT-BC142538  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  JEPS107822  Amphiscirpus nevadensis Lowell Ahart, John Dittes 2005-6-2 11975 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-BC222255  Amsinckia John Thomas Howell 1934-6-10 11870 Lassen Honey Lake Valley, 24 miles s. of Susanville Comment
  CHSC91325  Amsinckia intermedia Lowell Ahart; John Dittes 2005-6-1 11878 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS61105  Amsinckia menziesii var. menziesii W. L. Jepson 1918-8-2 7777 Lassen Beckwith Pass 1463 Comment
  SEINET10939652  Amsinckia tessellata Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2574 Lassen 3 mi S of Hallelujah Jct, on US Hwy 395, Jct of US 395 & CA 70; along roadside and in Artemesia-grassland field. Comment
  CHSC92825  Amsinckia tessellata var. tessellata Lowell Ahart; John Dittes 2005-6-1 11881 Lassen Near springs on a small hill, about 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  JEPS94122  Amsinckia tessellata var. tessellata Vernon H. Oswald and Lowell Ahart 1998-5-22 9091 Lassen Hwy. 395 at an intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  RSA622142  Amsinckia tessellata var. tessellata B. J. Cox, D. B. Dunn 1971-6-2 2574 Lassen 3 mi. S. of Hallelujah Jct., on U.S. Hwy. 395, Jct. of U.S. 395 & Calif. 70. Comment
  CAS-BOT-BC15606  Ancistrocarphus filagineus Alice Eastwood; J. T. Howell 1940-6-16 8354 Lassen Constantia Comment
  CHSC36438  Antennaria argentea Dave Leuck 1981-6-13 16 Lassen N. E. side of Galletin Peak. 1706 Comment
  POM39125  Antennaria argentea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC773954  Antennaria argentea L. R. Short and Wm. Gansberg 1936-6-10 S- 414 Lassen Burgess Spr. Exp. Range 1856 Comment
  CAS-BOT-BC26644  Antennaria argentea subsp. aberrans Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CHSC108021  Antennaria dimorpha Lowell Ahart; John Dittes 2011-6-20 17508 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC54170  Antennaria dimorpha Vernon H. Oswald 1991-5-28 4624 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  CHSC91298  Antennaria dimorpha Lowell Ahart; John Dittes 2005-6-1 11915 Lassen On the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  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
  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
  UCD128922  Antennaria flagellaris G. Schoolcraft 1981-5-27 0456 Lassen Hayden Hill. 1737 Comment
  CHSC92677  Antennaria geyeri L. P. Janeway; B. Castro 2005-7-10 8478 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
  JEPS100336  Antennaria geyeri Dean W. Taylor 2001-7-19 17842 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  HSC97018  Antennaria luzuloides L. Ahart, John Dittes 2005-6-1 11862 Lassen 1/2 mile west of Scott Rd., Long Valley, about 2 air miles NW of the intersection of Scott Rd. and Hwy. 70. 3.9 air miles NW of Hallelujah Junction 1449 Comment
  UC773953  Antennaria luzuloides L. R. Short and J. Warren 1936-6-23 S- 452 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1741 Comment
  CAS-BOT-BC77284  Antennaria microphylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49414 Lassen Elysian Valley, west of Janesville 1325 Comment
  SBBG63415  Antennaria rosea S. W. Hutchinson, M. N. Ackley -Jun-1925 214 Lassen Eagle Lake 1554 Comment
  JEPS95747  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  UC1035982  Apocynum androsaemifolium Helen K. Sharsmith 1955-6-27 4516 Lassen adjacent to Hwy. 89 n. of Hat Creek Ranger Station; Lassen Nat'l Forest 1158 Comment
  CHSC30563  Aquilegia formosa Sori H. Shad 1970-6-26 3 Lassen Found in Murrer, S upper Meadow in a silty soil. 1584 Comment
  POM99591  Aquilegia formosa Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC12479  Aquilegia formosa var. truncata Carol Weld 1969-6-25 25 Lassen Murrer's Meadow. 1524 Comment
  CHSC4273  Aquilegia formosa var. truncata K. R. Stern 1967-6-24 2404 Lassen Murrer Meadow, ca. 3 mi. SE of Eagle Lake Biological Station. 1554 Comment
  SEINET5337698  Aquilegia formosa var. truncata C. G. Gulling 1905-1 1544 Lassen Big Meadows 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
  NY112494  Arabis holboellii var. pinetorum R. C. Rollins 1981-5-30 81164 Lassen Gold Run Road, 9 miles S of Susanville Comment
  SEINET3899870  Arabis holboellii var. retrofracta Reed C. Rollins, Kathryn W. Rollins 1981-5-31 81177 Lassen Just north of Eagle Lake.; 0 Comment
  UC10185  Arabis holboellii var. retrofracta M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC407749  Arceuthobium abietinum Brighton C. Cain 1925-8-24 114 Lassen Mt. Lassen Volcanic National Park, 1 mile below Drakesbad 1645 Comment
  SEINET1916077  Arceuthobium abietinum R. L. Mathiasen 2010-1 1061 Lassen 0.3 km W of Fredonyer Pass on Rte. 36; On Abies Iowiana 1660 Comment
  SEINET2471253  Arceuthobium abietinum R. L. Mathiasen 2008-9-26 2008 -68 Lassen 16.5 km S. of N. entrance to Lassen Nat. Park on State Rte. 89 1940 Comment
  RSA38477  Arctostaphylos manzanita subsp. manzanita P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1509 Comment
  CAS-BOT-BC45893  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  UCD53307  Arctostaphylos patula Beecher Crampton 1964-1-26 7080 Lassen Ca. 35 miles NW of Susanville. 2042 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
  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
  UC465892  Arenaria congesta var. congesta Franklin P. Nutting Lassen Silver Lake Comment
  JEPS100348  Arenaria kingii var. glabrescens Dean W. Taylor 2001-6-28 17816 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  UCD95199  Argemone munita Verne Grant; Irving Schneider 1947-9-5 8367 Lassen northwest shore of Eagle Lake, by Sam Webb's place (Spaulding.) Comment
  CDA24523  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
  SEINET10940510  Argemone platyceras var. hispida Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 864 Lassen Collected on raod bank 24 mi n of calif state line of hwy 395. Comment
  CAS-BOT-BC82117  Arnica chamissonis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49429 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC107316  Arnica chamissonis 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
  CHSC59072  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1992-8-25 5192 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. 1851 Comment
  JEPS88428  Arnica chamissonis Vernon H. Oswald and Lowell Ahart 1996-8-1 8109 Lassen sw Westwood (shore of reservoir ne of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  CAS-BOT-BC82115  Arnica chamissonis Parkison 1916-7-21 36 Lassen Lassen Forest, Harvey Valley 1676 Comment
  RSA0115088  Arnica chamissonis subsp. foliosa Lowell A. Ahart, John Dittes 2008-6-20 14902 Lassen About 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CAS-BOT-BC82313  Arnica cordifolia Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville, Perkin's Ranch 2133 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
  UC1137700  Arnica cordifolia A. Simontacchi 1940-5-21 764 Lassen 4.6 mi sse of Blacks Mtn.; Hall Flat Quad. 1737 Comment
  CHSC108027  Arnica cordifolia var. cordifolia Lowell Ahart; John Dittes 2011-6-20 17484 Lassen Forest floor, about 50 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UCR7843  Arnica longifolia Marilyn Malin 1968-6-27 257 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 Comment
  CHSC12429  Arnica nevadensis Robert W. Severin 1969-6-21 10 Lassen 2 mi SSE E.L.B.S. between Five Points turnoffs. 1584 Comment
  UCD129144  Arnica sororia G. Schoolcraft 1994-6-9 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  SEINET3358258 Image available Artemisia arbuscula A. A. Beetle 1957-8-16 12763 Lassen Between Susanville and Johnstonville. Comment
  CAS-BOT-BC85003  Artemisia arbuscula subsp. arbuscula Clare B. Hardham 1971-8-22 18370 Lassen Diamond Mountain 2346 Comment
  RSA78904  Artemisia arbuscula subsp. arbuscula E. K. Balls, Percy C. Everett 1952-10-10 18145 Lassen 6.7 mi. SE of Ravendale, Hwy 395, between Susanville and Alturas 1280 Comment
  JEPS103162  Artemisia biennis B. Corbin and D. Armentrout 2002-9-4 1100 Lassen Biscar Reservoir, near dam on upper pond 1357 Comment
  UC1192211  Artemisia biennis Malcolm A. Nobs and S. Galen Smith 1949-8-20 1482 Lassen I mi n of Doyle (Long Creek); Honey Lake Valley Comment
  CAS-BOT-BC84832  Artemisia cana subsp. cana G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  CAS-BOT-BC90331  Artemisia douglasiana John Thomas Howell 1975-7-23 51390 Lassen Susanville 1295 Comment
  CAS-BOT-BC90330  Artemisia douglasiana Clare B. Hardham 1971-8-22 18374 Lassen North slopes, Diamond Mountain 2133 Comment
  CHSC77186  Artemisia dracunculus G. Schoolcraft 1999-6-29 2847 Lassen East edge of Madeline Plains NE of Ravendale. 1627 Comment
  UC1776711  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfield and Bass Hill Roads 1322 Comment
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Aug 12 2019
  RSA523927  Artemisia ludoviciana subsp. ludoviciana G. H. True 1937-7-10 783 Lassen Bull Flat, Refuge 1Q 1524 Comment
  CAS-BOT-BC90830  Artemisia nova Arnold Tiehm; Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 road miles N of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  SEINET245807  Artemisia nova Arnold Tiehm, Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 road miles north of Karlo Road on highway 395 from Litchfield to Alturas, just east of the highway 1402 Comment
  SEINET263201  Artemisia nova J. Lyman 1994-4-23 4242 Lassen Along Highway 395, ca. 25 miles north of Susanville on intersecting BLM road 1433 Comment
  CDA19747  Artemisia spinescens D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC60307  Artemisia tridentata Mary Ann Showers 1992-6-13 2534 Lassen Lassen Volcanic Naitonal Park. Trail from Snag Lake jct to Widow Lake. 1828 Comment
  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-BC97325  Artemisia tridentata subsp. tridentata George W. Gillett 1957-9-4 1132 Lassen Near Bute Lake; intersection of the Widow Lake - Snag Lake trails 1859 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
  UC1136978  Artemisia tridentata subsp. tridentata George A. Fisher and Irwin H. Johnson 1933-9-8 F 282 Lassen Patterson Flat Lassen National Forest, Patterson Flat 1706 Comment
  CHSC77188  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  JEPS124637 Image available Artemisia vulgaris Dixie Funnell 1965-7-13 137 Lassen Growing under bridge about 4 feet from the water. Highway 299, under bridge 705 for pit overflow. Comment
  CHSC6222  Asclepias fascicularis M. West 1946-7-10 Lassen Pine Creek, Eagle Lake. 1584 Comment
  POM261535  Aster intermedius Alice Eastwood 1912-8-22 1895 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  UCD105587  Astragalus Grady L. Webster 1989-5-13 7720 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UCD105589  Astragalus Grady L. Webster 1989-5-13 7721 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  NY790903  Astragalus agrestis R. M. Austin 06 1898 2211 Lassen Madaline Plains Comment
  UC13379  Astragalus agrestis Mrs. R. M. Austin and Bruce June 1898 2211 Lassen Madaline Plains Comment
  CAS-BOT-BC177435  Astragalus andersonii Margaret Williams 1974-8-4 74 -L-83 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 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
  CHSC7674  Astragalus andersonii Beverly J. Wise 1969-5-9 51 Lassen 10.2 mi. West of Susanville. North side of junction with hwy 36 on Fredonyer campground rd. Forest service rd. no. 8246. 1615 Comment
  NY791376  Astragalus andersonii W. W. Eggleston 1911-5-29 6734 Lassen Vicinity of Doyle Station 1290 Comment
  UC84393  Astragalus andersonii T. Brandegee 1892-6-30 Lassen Janesville Comment
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Oct 22 2007
  HSC61704  Astragalus anxius Thomas W. Nelson, Jane P. Nelson 1980-7-6 5988 Lassen In Ash Valley along Adin-Madeline Rd. 16 mi. E of Adin. Comment
  HSC69614  Astragalus anxius Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  SEINET2059942 Image available Astragalus argophyllus var. argophyllus Arnold Tiehm, Margaret Williams, Gary Schoolcraft 1986-5-12 10347 Lassen 1 mi W of the State line on the dirt road from Hwy 395 to Smoke Creek, S side of Rush Creek 1341 Comment
  CAS-BOT-BC178762  Astragalus canadensis var. brevidens John Thomas Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake Comment
  HSC82253  Astragalus curvicarpus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6005 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  HSC69613  Astragalus curvicarpus Gary Schoolcraft 1979-6-19 77 Lassen Just N of West Painter Flat Rd. intersection. 1720 Comment
  RSA152593  Astragalus curvicarpus I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville. Comment
  CAS-BOT-BC177847  Astragalus curvicarpus var. curvicarpus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville Comment
  NY803537  Astragalus curvicarpus var. curvicarpus LeDoux 1973-5-24 862 Lassen Collected on road bank 24 miles north of California state line of Highway 395 Comment
  CAS-BOT-BC182958  Astragalus filipes H. D. Ripley; R. C. Barneby 1943-6-15 5759 Lassen East of Viewland 1310 Comment
  NY658500  Astragalus filipes P. H. Raven 1958-6-17 13290 Lassen Along US Highway 395, o.4 mile South of Ravendale Comment
  SEINET3140019  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km S of Doyle on US Hwy 395 1430 Comment
  UC81426  Astragalus filipes Mrs. R. M. Austin June, 1879 43 Lassen near Eagle Lake; near Eagle Lake 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
  SEINET10452220  Astragalus filipes Mary Susan Taylor 1982-5-29 Taylor 4569 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  CAS-BOT-BC186860  Astragalus gibbsii John Thomas Howell 1974-7-8 50462 Lassen Susanville 1295 Comment
  SEINET3142990  Astragalus gibbsii E. K. Balls 1950-5-9 15949 Lassen 6 mi S of Doyle, Hwy 395 1372 Comment
  CAS-BOT-BC186867  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1942-5-22 4541 Lassen Loyalton 1524 Comment
  SEINET10970063  Astragalus gibbsii Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 881 Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  CAS-BOT-BC186912  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  SEINET5325323  Astragalus iodanthus var. diaphanoides M. J. Williams, Gary Schoolcraft; Arnold Tiehm 1986-5-12 86- 23 -2 Lassen Smoke Creek Rd, E of Hwy 395, 1 mi W of Nevada-Calif. Boundary. 1341 Comment
  CAS-BOT-BC178216  Astragalus kentrophyta Mike Vasey 1990-6-30 9049 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road, Modoc National Forest 1500 Comment
  CAS-BOT-BC229046  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  RSA0035824  Astragalus lemmonii Lowell A. Ahart, John Dittes 2008-6-20 14968 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  CHSC13508  Astragalus lentiginosus J. Pitts 1972-6-22 253 Lassen 130 yds. n of Eagle Lake Biology Station by an alkali marsh. Comment
  UCD55267  Astragalus lentiginosus Ellen Dean 2006-5-15 3065 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  CAS-BOT-BC187155  Astragalus lentiginosus var. chartaceus H. D. Ripley; R. C. Barneby 14 Jun. 5744 Lassen Hidden Valley E of Susanville 1310 Comment
  CAS-BOT-BC187159  Astragalus lentiginosus var. floribundus Arnold Tiehm 1980-5-29 5751 Lassen North end of Honey Lake Valley, 1 mile north of Wendel 1231 Comment
  UC13383  Astragalus lentiginosus var. floribundus L. T. Stephenson Sep 1897 Lassen Chat , Chat (Sierra Valley) Comment
  CHSC99508  Astragalus lentiginosus var. lentiginosus Lowell Ahart; John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber. 1268 Comment
  CHSC7667  Astragalus lentiginosus var. platyphyllidius Beverley J. Wise 1969-5-4 56 Lassen 1.7 mi. west on Shaeffer Mtn Lookout Rd off Hwy 395 (approx. 1 mi. south of Las Co. Rd. 338). 1676 Comment
  HSC28508  Astragalus lentiginosus var. platyphyllidius D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19294 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  NY676232  Astragalus malacus B. J. Cox 1971-6-2 2599 Lassen Hallalujah Jct. intersection of U.S. Highway 395 and Calif. Highway 70 1433 Comment
  CAS-BOT-BC192841  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  UC1567373  Astragalus pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen e slope Shaffer Mtn. 1524 Comment
  CAS-BOT-BC192855  Astragalus pulsiferae var. pulsiferae G. Schoolcraft 1989-6-7 1906 Lassen East slope of Shaffer Mtn. Comment
  CHSC98311  Astragalus pulsiferae var. pulsiferae R. Ondricek-Fallscheer 1999-7-2 196 Lassen About 3/4 air mi SW of Hallelujah Junction (the junction of Hwy 70 and Hwy 395). 1499 Comment
  RSA0074200  Astragalus pulsiferae var. pulsiferae L. T. Stephenson 1897-09 6523 Lassen Chat Comment
  NY678236  Astragalus purshii var. lectulus S. L. Welsh 2001-6-14 28157 Lassen East of Highway 395, road to Rams Horn Spring campground 1539 Comment
  RSA0007957  Astragalus purshii var. lectulus H. D. Ripley, R. C. Barneby 1944-5-30 5983 Lassen 2 miles N of Madeline. 1707 Comment
  CHSC91198  Astragalus purshii var. purshii Lowell Ahart; John Dittes 2005-6-1 11870 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
  RSA715542  Astragalus purshii var. purshii L. Ahart 2005-6-1 11870 Lassen About 1/2 miles west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70., 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  NY694434  Astragalus purshii var. tinctus W. W. Eggleston 1911-5-29 6711 Lassen Vicinity of Doyle Station Comment
  UC1128895  Astragalus purshii var. tinctus A. Simontacchi 1940-5-9 694 Lassen 4.5 mi sse of B.M. 7310 on Black Mtn; Halls Flat Quad., Lassen National Forest, Black Mtn Comment
  UC1136766  Astragalus purshii var. tinctus George A. Fischer and Irwin H. Johnson 1933-7-14 F- 249 Lassen Lassen Forest 1767 Comment
  UC773896  Astragalus purshii var. tinctus L. R. Short and J. Warren 1936-6-11 S- 402 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range (Lassen National Forest) 1789 Comment
  RSA26502  Astragalus whitneyi Marcus E. Jones 1897-6-30 s.n Lassen Susanville; 7 miles below Eagle Lake. 1524 Comment
  RSA639008  Astragalus whitneyi Michael A. Vincent 1999-6-9 8576 Lassen Bureau of Land Management land, Madeline Plains: SW of US Rt 395, SE of CR 515 (Termo road), S of BLM road 1614, and SW of Termo. Along jeep road to Schott Canyon. Comment
  SEINET12165119  Astragalus whitneyi N. H. Holmgren, Holmgren, P. K. 1980-1 9514 Lassen Observation Peak, S side of Mt. 18km airline dist. E of Ravendale. T34N R16E S33 Comment
  CHSC67217  Astragalus whitneyi var. confusus James D. Jokerst 1991-5-29 3303 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
  JEPS90987  Astragalus whitneyi var. confusus Dean Wm. Taylor with Glenn Clifton 1990-6-12 10887 Lassen along creek at crossing of Road 527 (Forest Road 39N08); Modoc Plateau, Ash Valley, Ash Creek 1554 Comment
  SEINET10490007  Astragalus whitneyi var. confusus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17770 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc. 1372 Comment
  UC1561813  Astragalus whitneyi var. siskiyouensis Barbara Ertter with Gary Schoolcraft 1987-6-16 7183 Lassen open rhyolitic ridge w Hot Springs VABM (Skeedaddle Mountains on ne side of Honey Lake); Skeedaddle Mountains, ne side Honey Lake,l w of Hot Springs 2133 Comment
  UC1567401  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  UC769845  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  UCR244040  Atriplex confertifolia Jim Andre 1993-6-1 19710 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  JEPS95899  Atriplex heterosperma Lowell Ahart 1999-9-13 8208 Lassen on the west side of the dirt road and 1/2 mile south of the sign in station; Honey Lake Wildlife Area; 4 1/2 miles (air) southeast of Standish 1207 Comment
  UCD97425  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  CHSC65305  Atriplex rosea Vernon H. Oswald; Lowell Ahart 1995-8-14 7174 Lassen Modoc Plateau. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  CAS-BOT-BC106555  Balsamorhiza John Thomas Howell 1976-7-20 52011 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek - Sierra Nevada 1432 Comment
  JEPS103182  Balsamorhiza G. Schoolcraft 2000-4-26 2893 Lassen West of Grasshopper Valley 1706 Comment
  CHSC25298  Balsamorhiza hookeri Pauleen Broyles 1977-5-30 140 Lassen Spencer's Basin ca 8 km N of Herlong. 1770 Comment
  JEPS1758  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi w of, along Hwy. 36 Fredonyer Pass 1752 Comment
  SEINET10617201  Balsamorhiza hookeri Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 476 Lassen Approx. 2 mi. N of Susanville, across CA Hwy. 139 from Lassen Jr. College, in grassland at edge of Jeffery Pine & Artemisia. 1341 Comment
  CHSC31967  Balsamorhiza sagittata Wayne O. Baum 1971-6-21 71 -30 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC114353  Balsamorhiza sagittata B. Villegas 2011-5-20 Lassen Susanville. Comment
  CAS-BOT-BC16436  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49177 Lassen Sierra Nevada. Elysian Valley, northwest of Janesville. 1325 Comment
  NY119710  Barbarea orthoceras N. H. Holmgren 1978-6-11 8919 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi.) E of Ravendale and 22.5 km (14 mi.) airline distance 1680 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
  JEPS121246  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18871 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD54547  Bergia texana Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2731 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  CDA20580  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau; Anderson Ranch (southern Lassen County). 1478 Comment
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Aug 25 2008
  UC765510  Berula erecta R. F. Hoover 1940-10-1 4658 Lassen between Jonesville and Standish (near Honey Lake) Comment
  NY526245  Betula glandulosa B. M. Bartholomew 1988-7-22 4500 Lassen Mosquito Creek, ca. 2 km. southwest of Patterson Meadow, southern end of the Warner Mountain. 2080 Comment
  HSC95177  Bidens cernua Gordon Leppig, Juli Neander, Kai Neander 1997-7-25 678 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1553384  Bidens cernua G. Schoolcraft 1988-8-10 1848 Lassen 10 mi ne of Susanville (along Hwy 139 at Jack's Valley Spring); Highway 139, Jack's Valley Spring 1505 Comment
  UC761894  Bidens cernua R. F. Hoover 1940-10-1 4661 Lassen near Honey Lake (between Janesville and Standish) Comment
  CDA10495  Bidens cernua var. cernua Gordon Leppig 1998-8-17 1047 Lassen Northern California Peatlands; Modoc National Forest. Blue Lake Ranch. Comment
  CHSC60760  Bistorta bistortoides Vernon H. Oswald; Lowell Ahart 1993-6-3 5484 Lassen Champs Flat Rd. (Lassen 105), Forest 32N28Y), 2.4 mi N of its junction with Lassen 21 (32N02) to Eagle Lake, on the W edge of Pine Creek Valley, between Poison Lake and Susanville. 1728 Comment
  CAS-BOT-BC128015  Blepharipappus scaber Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee 1219 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-BC128041  Blepharipappus scaber Farris Farris 1935-5-20 s.n. Lassen Three miles southwest of Susanville 1341 Comment
  JEPS88876  Blepharipappus scaber Lauramay T. Dempster 1961-6-17 1669 Lassen about 4 mi sw junction with Richmond Road (s of Susanville); Gold Run Creek Comment
  UC577280  Blepharipappus scaber David D. Keck and J. Clausen 1935-6-24 3733 Lassen 2 mi s of Ravendale 1463 Comment
  CAS-BOT-BC127955  Blepharipappus scaber Dr. Jean Linsdale 1929-6-9 s.n. Lassen Pete's Valley Comment
  RSA647521  Blepharipappus scaber Marion P. Harthill 1972-6-17 806 Lassen Ravendale. 1646 Comment
  UC1181375  Blepharipappus scaber R. W. Thorp and G. I. Stage 1960-6-11 60 -63 Lassen 6.5 mi north of Termo Comment
  JEPS53205  Boechera Leland S. Smith 1918-5-11 924 Lassen Hayden Hill Modoc Forest Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  UC2046023  Boechera lincolnensis Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11189 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. 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
  CHSC75475  Boechera puberula Vernon H. Oswald; Lowell Ahart 1999-6-9 9761 Lassen Bizz Johnson Trail just east of Devils Corral Trailhead located off of Hwy. 36 between Susanville and Fredonyer Summit. Adjacent to trail. 1420 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
  CHSC40526  Boechera retrofracta J. D. Jokerst 1983-5-30 1796 Lassen West of Ash Valley, along the road that leads to Know Mt. ca 1.0 mile north of the road to either Aden or Madeline. Comment
  CHSC99133  Boechera retrofracta Lowell Ahart; John Dittes 2008-6-19 14884 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
  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
  JEPS88209  Boechera sparsiflora Vernon H. Oswald and Lowell Ahart 1996-6-17 7774 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, slope at the bridge spanning the Susan R. on n. side of Hwy 36); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  SEINET10453123  Boisduvalia densiflora Mary Susan Taylor 1982-8-19 Taylor 5032 Lassen T27N R14E ne sec 36. Milford quad. Along dirt rd 326, ca. 0.5 mi e of its jct with Milford Grade, ca. 1 air mi se of Milford. In ditch on roadside; 4300 ft. 1310 Comment
  RSA32754  Boisduvalia macrantha A. A. Heller 1938-7-28 15295 Lassen About a mile east of Westwood 1524 Comment
  HSC16160  Brasenia schreberi Fred J. Kindel 1955-7-14 Lassen Mt. Meadows Reservoir Comment
  HSC103654  Brickellia californica Thomas W. Nelson, Jane Nelson 1985-8-10 8021 Lassen Along west side of Silver Lake. 1829 Comment
  UC1037276  Brickellia grandiflora Leo Whitney 1934-7-25 1758 Lassen ca. 15 mi w of, Eagle Lake; Lassen National Forest, Crater Mountain 2225 Comment
  UCR202646  Brickellia microphylla George K. Helmkamp 1990-9-23 B- 15 Lassen Modoc Plateau, Susanville 1189 Comment
  CHSC92737  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 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
  UC1249280  Brodiaea coronaria subsp. coronaria Arthur Cronquist and Arthur H. Holmgren 1959-6-18 8485 Lassen 5 mi s Adin Comment
  CAS-BOT-BC457056  Brodiaea coronaria subsp. coronaria Ella Dales Cantelow 1940-5-31 3919 Lassen East of McArthur, Hy. 299 Comment
  CAS-BOT-BC144333  Bromus R. E. Frenkel 1964-7-12 666 Lassen On California Highway 299, 1.5 mile west of Bieber. 1249 Comment
  CAS-BOT-BC149497  Bromus briziformis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Few miles north of Leitchfield in lava country. Comment
  CHSC7689  Bromus briziformis Beverley J. Wise 1969-5-16 125 Lassen 34.5 mi. S. E. of Susanville on Co. Rd 320. (Stacey) 1584 Comment
  SEINET3921578  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8909 Lassen Vicinity of spring at fork to Painters Flat on east side of Oberservation Peak. 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance.; 0 1680 Comment
  UCR119112  Bromus carinatus Beecher Crampton 1954-7-5 2055 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  CAS-BOT-BC149584  Bromus carinatus var. carinatus John Thomas Howell 1973-7-10 49778 Lassen Sierra Nevada. Fredonyer Pass. 1737 Comment
  CDA31386  Bromus carinatus var. carinatus D. R. Hill 1968-7-8 Lassen James R. Reynolds ranch, Revendale. 0 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
  UC773968  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1820 Comment
  CAS-BOT-BC155940  Bromus commutatus G. Schoolcraft 1986-6-17 1624 Lassen North side of Tuledad Canyon near Nevada state line. 1554 Comment
  UCD59488  Bromus diandrus L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
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Jun 24 2009
  UCD58839  Bromus inermis M. C. Collins 1926-6-14 s.n. Lassen Susanville. Comment
  JEPS124392  Bromus japonicus Lowell Ahart, John Dittes 2015-7-13 20310 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCD32672  Bromus japonicus Beecher Crampton 1954-7-6 2076 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 Comment
  SEINET10517964  Bromus mollis Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 872 Lassen Collected 3 mi n of milford on hwy 395 at honey lake campgrounds. Comment
  UC60732  Bromus secalinus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixie Valley Comment
  HSC22362  Bromus sterilis D. E. Anderson 1969-7-5 4998 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  CAS-BOT-BC161575  Bromus suksdorfii John Thomas Howell; Gordon H. True 1973-8-1 50222 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2164 Comment
  UC1136819  Bromus suksdorfii George A. Fischer and Irwin H. Johnson 1933-7-14 F 261 Lassen Lassen National Forest 1783 Comment
  CAS-BOT-BC161420  Bromus tectorum Margaret Williams; Steven Williams 1974-7-26 74 -L-2 Lassen Sierra Nevada. Near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  CHSC106670  Bromus tectorum B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UC1142960  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Westwood Junction Lassen National Forest 1737 Comment
  UCD149989  Callitriche palustris William Anderson 1963-6-12 s.n. Lassen Honey Lake Valley. Comment
  CHSC6217  Calocedrus decurrens P. Balch 1955-7-18 Lassen Willow Creek, Eagle Lake. 1463 Comment
  NY18970  Calocedrus decurrens K. Morris 1973-5-25 226 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SBBG15290  Calochortus leichtlinii H. and M. Dearing 1938-7-1 2237 Lassen top of pass W of Susanville 1762 Comment
  UC1537209  Calochortus leichtlinii Gordon H. True Jr. 1936-6-25 533 Lassen n side Hog Flat Reservoir 1524 Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  CAS-BOT-BC487967  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen In the valley east of Fredonyer Pass, Comment
  HSC22969  Calochortus macrocarpus var. macrocarpus John Pratt 1970-6-4 62 Lassen Susanville Comment
  SEINET10675935  Caltha leptosepala var. biflora Karen M. Meyer, Andrew Townesmith 2007-7-21 Meyer 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A21. 1920 Comment
  CHSC36436  Calyptridium umbellatum Dave Lueck 1981-6-13 18 Lassen Dirt road at base of N. E. side of Galletin Peak. 1584 Comment
  CHSC64890  Calyptridium umbellatum Vernon H. Oswald 1995-6-26 6938 Lassen Modoc Plateau. Gravel pit on the e side of Ash Valley Rd. (Lassen 527) 0.2 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  HSC17647  Calyptridium umbellatum Fred J. Kindel 1955-6-8 Lassen Westwood Comment
  SD61074  Calystegia occidentalis subsp. occidentalis Darley F. Howe 1964-8-1 3915 Lassen Parsnip Creek, Modoc National Forest, Warner Mountains. 1830 Comment
  SEINET230279  Calystegia polymorpha Noel H. Holmgren, Patricia K. Holmgren 1980-7-9 9581 Lassen Surprise Valley 23.7 km south of Fort Bidwell 1400 Comment
  SEINET8197883  Camassia quamash var. breviflora J. A. Young 1982-6-9 s.n. Lassen Meyer's Ranch, Adin. 1372 Comment
  CAS-BOT-BC36995  Camelina microcarpa James Jokerst 1983-5-31 61011 Lassen Near Madeline Plains. 1583 Comment
  JEPS109919  Camelina microcarpa D. W. Taylor 2007-6-14 20130 Lassen S end of Grasshopper Valley County Road 512 1 mile W of junction with Hwy 139. Comment
  NY850967  Camissonia boothii subsp. alyssoides A. Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  NY850974  Camissonia boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen About midway between Mapes and Secret Valley on U.S. Highway #395. 1372 Comment
  RSA294814  Camissonia boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  HSC69590  Camissonia claviformis subsp. cruciformis Gary Schoolcraft 1980-5-16 235 Lassen Behind kiln oven on Wendel Hwy. 1280 Comment
  CHSC71091  Camissonia contorta Vernon H. Oswald; Lowell Ahart 1998-5-22 9098 .1 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
  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
  JEPS89992  Camissonia contorta Dean Wm. Taylor with Robert A. Price 1988-6-4 9768 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. Watershed 1036 Comment
  CHSC71240  Camissonia parvula Vernon H. Oswald; Lowell Ahart 1998-6-4 9141 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 Comment
  CHSC71092  Camissonia pubens Vernon H. Oswald; Lowell Ahart 1998-5-22 9136 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. Roadside banks. 1341 Comment
  HSC42415  Camissonia tanacetifolia Barbara Kelly 1977-8-9 565 Lassen 14.3 mi. E of Madeline on the dirt road from Adin Comment
  CAS-BOT-BC160834  Camissonia tanacetifolia subsp. quadriperforata W. L. Jepson 1918-8-2 7767 Lassen Beckwith Pass 1463 Comment
  CAS-BOT-BC160859  Camissonia tanacetifolia subsp. tanacetifolia A. M. Vollmer; L. Beane 1953-7-1 41 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC160875  Camissonia tanacetifolia subsp. tanacetifolia Noel H. Holmgren; Patricia K. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of US Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  RSA38463  Camissonia tanacetifolia subsp. tanacetifolia P. A. Munz 1947-5-19 11883 Lassen Madeline 1677 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
  UC1137752  Capsella bursa-pastoris L. R. Short and J. Warren 1936-6-9 S 408 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1844 Comment
  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
  JEPS94549  Cardamine breweri Vernon Oswald and Lowell Ahart 1997-6-24 8618 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43, 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 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
  JEPS120845  Cardamine pensylvanica Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18729 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  CHSC85988  Carex abrupta L. P. Janeway 2003-7-24 7918 Lassen High Cascade Range. 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
  CHSC89753  Carex abrupta L. P. Janeway 2004-6-26 8170 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. Roadside ditch. 1790 Comment
  CHSC58858  Carex angustata Vernon H. Oswald; Lowell Ahart 1992-7-16 5115 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. 1719 Comment
  HSC97144  Carex angustata L. P. Janeway 2003-7-24 7912 Lassen High Cascade Range. Along end of meadow and marsh along Bridge Creek, 1.8 km. N of Hwy. 44, just NW of the Cinder Pit 1716 Comment
  JEPS63614  Carex angustata Leland S. Smith 1922-7-30 68 Lassen Martin Spring Meadow Lassen National Forest Comment
  CHSC89754  Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  SEINET7550662 Image available Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flats; Black Mountains Experimental Forest. Poison Lake 7.5' quad. 1767 Comment
  UC1537643  Carex athrostachya Gordon H. True Jr. 1939-6-15 994 Lassen Bullard Lake, W of Grasshopper Valley Comment
  JEPS87494  Carex aurea Vernon H. Oswald and Lowell Ahart 1993-8-3 5742 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CAS-BOT-BC34933  Carex densa T. C. Fuller 1966-7-20 14963 Lassen South side of road to Pittville, 5.4 miles west of Little Valley Post Office. NW Lassen County. Comment
  UC1748339  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen NW corner of Upper Stephens Meadow (Upper Pine Creek near Stephens Camp); High Cascade Range 1900 Comment
  UC1736284  Carex douglasii Dean W. Taylor 1974-6-14 3716 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC803  Carex douglasii J. Burtt Davy Jun 17 1897-Jun 24 1897 3289 Lassen Honey Lake Valley Comment
  CAS-BOT-BC19778  Carex douglasii Clarence Roy Quick 1962-6-17 32 -18 Lassen sagebrush flat, north of DeLasmutt Ranch on old dirt road to Blacks Mountain E.F. Headquarters. 1615 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
  HSC103600  Carex fracta Thomas W. Nelson, Jane Nelson 1985-8-10 8011 Lassen Along north side of Silver Lake 1829 Comment
  JEPS87491  Carex heteroneura Vernon H. Oswald and Lowell Ahart 1993-8-3 5744 Lassen e Silver Lake (at the sw edge of swamp, just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); Cooper Swamp 1932 Comment
  UC2031887  Carex heteroneura Nick Otting 2003-7-15 684 Lassen Sierra Nevada Mountains, Diamond Mountain, 1000 feet east of summit, 7.5 miles south-southwest of Susanville. Comment
  JEPS28381  Carex hoodii George W. Gillett 1957-7-29 946 Lassen along trail between Snag Lake and Butte Lake; Lassen Volcanic National Park 1859 Comment
  UC1133501  Carex integra A. Simontacchi 1940-5-14 720 Lassen 4.1 mi wnw Aspen Well; Lassen National Forest, Halls Flat Quadrangle Comment
  JEPS88667  Carex lenticularis var. impressa Dean W. Taylor 1975-8-24 5407 Lassen margin of Everett Lake Thousand Lake Wilderness Area, Magee Peak, Everett Lake 2307 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  HSC103653  Carex lenticularis var. limnophila Thomas W. Nelson, Jane Nelson 1985-8-10 8010 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC31439  Carex leporinella Hans Leschke 1945-9-15 s.n. Lassen Near Twin Lakes, Mt. Lassen Comment
  JEPS103202  Carex microptera G. Schoolcraft 1994-7-7 2366 A Lassen south end of Warner Mountains West of Boot Lake 2194 Comment
  POM81434  Carex multicaulis Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC1133502  Carex nebrascensis Robert W. Gardner 1939-6-6 G- 29 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  HSC103619  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8014 Lassen Along north side of Silver Lake 1829 Comment
  RSA201569  Carex nebrascensis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake. Warner Mountains. Modoc National Forest. Northeastern Lassen County. (ca. 18 miles airline southeast of likely), California. 1905 Comment
  UC70637  Carex pellita Jos. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Honey Lake Valley Comment
  SEINET4292243 Image available Carex petasata Unknown 2004-1 8139 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. Swains Hole 7.5' quad. Comment
  UC1133448  Carex petasata Robert W. Gardner 1939-6-28 G- 32 Lassen Burgess Spring Experimental Range, Halls Flat Quadrangle Burgess Spring Experimental Range Comment
  SEINET7572130 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11877 Lassen About 3/4 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1470 Comment
  UC1133503  Carex praegracilis Robert W. Gardner 1939-6-15 G- 37 Lassen Little Harvey Valley Halls Flat Quadrangle Comment
  UC1583985  Carex praegracilis G. Schoolcraft 1990-6-12 2087 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CHSC118476  Carex praegracilis Don Lepley 2015-6-16 Lassen Lassen National Forest. Eagle Lake Ranger District. Sandy Beach of Eagle Lake, ~1.6 air miles north of Spalding marina. 1559 Comment
  JEPS109091  Carex preslii D. W. Taylor 2008-6-19 20226 Lassen Unnamed meadow equidistant between Papoose Meadwo and Mahogany Lake Comment
  CAS-BOT-BC118229  Carex scopulorum var. bracteosa John Thomas Howell 1934-6-14 12162 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  JEPS114623  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
  POM81761  Carex sheldonii Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  SEINET6171441  Carex simulata CLM Team 2014-7-29 NV 030 -984 Lassen From Reno head north on 395, turn right onto Red Rock Rd. and proceed roughly 0.5-0.75 of a mile and park at dirt pull off on the right side of the road 1381 Comment
  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
  JEPS28383  Carex subfusca George W. Gillett 1957-7-26 913 Lassen e shore Butte Lake Lassen Volcanic National Park, Butte Lake 1844 Comment
  JEPS28384  Carex subfusca George W. Gillett 1957-7-26 911 Lassen lake shore near ne arm of Butte Lake; Lassen Volcanic National Park, Butte Lake 1844 Comment
  RSA702448  Carex subfusca L. P. Janeway 2004-6-26 8169 Lassen High Cascade Range; Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. 1790 Comment
  CAS-BOT-BC116607  Carex subfusca Clare B. Hardham 1971-8-22 18383 Lassen Diamond Mountain streambed. 2133 Comment
  CAS-BOT-BC116610  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  CAS-BOT-BC116617  Carex subfusca B. Clear 1938-7-14 s.n. Lassen Manzanita Lake, Lassen Park. Comment
  HSC103651  Carex utriculata Thomas W. Nelson, Jane Nelson 1985-8-10 8009 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC115062  Carex vesicaria George Wilson Gillett 1957-7-22 879 Lassen South shore of Snag Lake, margin of gravel bars 100 yards from lake. 1850 Comment
  CAS-BOT-BC248970  Castilleja Philip A. Munz 1947-5-19 11866 Lassen 27.7 miles south of Ravendale, on Highway 395 1310 Comment
  CHSC106570  Castilleja angustifolia K. Schierenbeck 2008-5-3 Lassen Fort Sage Mtns. 1439 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
  JEPS62334  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen ca 6 mi n Honey Lake 1280 Comment
  UC585182  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1741 Lassen above Red Rock 1432 Comment
  UC1012183  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Susanville; Route 36 1371 Comment
  CHSC99527  Castilleja campestris subsp. campestris Lowell Ahart; John Dittes 2008-6-20 14978 Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 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
  CDA41240  Castilleja lacera T. C. Fuller 1963-6-1 10631 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  JEPS85915  Castilleja lemmonii L. R. Heckard with R. Bacigalupi 1980-6-12 5260 Lassen ne of Westwood (near golf course) 1554 Comment
  JEPS86676  Castilleja lemmonii L. R. Heckard with T. I. Chuang 1990-7-14 6756 Lassen just e Westwood (n of Firland Rd (Hwy 36)) Comment
  CHSC1713  Castilleja linariifolia K. Chew 1954-7-17 Lassen 1615 Comment
  CHSC1714  Castilleja linariifolia 1944-7-5 Lassen Bogard. 1722 Comment
  JEPS62629  Castilleja miniata Clare B. Hardham 1969-8-28 17424 Lassen w of Janesville; Sierra Nevada 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
  CHSC99144  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
  CHSC113090  Castilleja tenuis Lowell Ahart; John Dittes 2013-7-22 18840 Lassen West margin of a duck field, about 30 yards southeast of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC93698  Castilleja tenuis Lowell Ahart; John Dittes 2005-6-2 11962 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  CHSC99131  Castilleja tenuis Lowell Ahart; John Dittes 2008-6-19 14874 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS107313  Castilleja tenuis Lowell Ahart, John Dittes 2005-6-1 11902 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
  JEPS114750  Castilleja tenuis Lowell Ahart, John Dittes 2008-6-22 15027 Lassen Along a small natural drainage, about 20 yards west of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  SBBG128749  Castilleja tenuis L. Ahart, J. Dittes 2008-6-22 15027 Lassen a small natural drainage, ca. 20 yards W of the rd levee, open meadow area, in Big Valley, ca. 2.1 mi (air) NE of the Headqaurters at Ash Crk State Wildlife Area, ca. 5.0 mi (air) NE of Bieber 1262 Comment
  UC1553382  Ceanothus cordulatus G. Schoolcraft 1988-7-11 1823 Lassen ca 5 mi n Hwy 36 (along Hwy 44) 1676 Comment
  HSC26519  Ceanothus cuneatus J. P. Smith, J. O. Sawyer 1972-5-6 5242 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  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
  RSA122353  Ceanothus prostratus C. B. Bradshaw 1939-5-27 233 Lassen S end Black Mt. EF Plot 39-1, s15. 1753 Comment
  UC1071527  Ceanothus prostratus K. Bradshaw 1939-5-27 233 Lassen Black Mt. Experimental Forest - Plot 39-1, s end Lassen National Forest, Halls Flat Quad. Comment
  UC1071529  Ceanothus prostratus A. Simontacchi 1940-5-13 706 Lassen 4.1 mi W of Harvey Mountain 1981 Comment
  CHSC6287  Ceanothus velutinus R. Clicquennoi 1967-7-1 37 Lassen Four miles s of Eagle Lake Biology Station off Gallatin Beach Road. 1554 Comment
  HSC22955  Ceanothus velutinus John Pratt 1970-6-21 28 Lassen 1738 Comment
  CDA7222  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 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
  UCD159569  Centaurea stoebe subsp. micranthos D. S. Park 2011-6-27 306 Lassen East of Westwood. Growing near Willard Creek. Comment
  CAS-BOT-BC281208  Centaurea stoebe subsp. micranthos Lee E. Wheeler 1962-8-15 s.n. Lassen Doyle area Comment
  UC1181382  Centaurea virgata subsp. squarrosa Darwyn Briggs 1960-7-28 Lassen Big Valley 1264 Comment
  RSA186838  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville Comment
  JEPS46972  Centaurium exaltatum W. L. Jepson 1918-8-2 7759 Lassen Beckwith Pass 1463 Comment
  JEPS84967  Centaurium exaltatum Barbara Ertter 1987-7-24 7305 Lassen ca 0.75 mi ene Beckwourth Pass (at the end of old crumbling paved road) 1524 Comment
  NY187215  Centaurium exaltatum B. J. Ertter 1987-7-24 7305 Lassen Ca. 3/4 mi ENE of Beckwourth Pass at end of crumbling paved road. 1524.0 Comment
  RSA715992  Centaurium muehlenbergii L. Ahart, John Dittes 2005-6-2 11977 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  CAS-BOT-BC279592  Centromadia pungens subsp. pungens Gordon H. True 1973-8-22 7656 Lassen North shore of Honey Lake, ca. 5 miles east of Janesville and just west of Hartson Reservoir 1219 Comment
  CAS-BOT-BC388199  Cerastium fontanum subsp. vulgare John Thomas Howell 1976-7-19 51990 Lassen On Gold Run Creek southwest of Susanville 1386 Comment
  JEPS114633  Cerastium glomeratum Lowell Ahart, John Dittes 2008-6-20 14966 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  RSA755002  Cerastium glomeratum L. Ahart, John Dittes 2008-6-20 14966 Lassen About 10-100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber. 1264 Comment
  HSC23531  Ceratophyllum demersum R. Carter 1967-7-13 593 Lassen 5 mi. E of Eagle Lake Biology Station at point where road comes nearest to Willow Creek 1561 Comment
  UC956838  Ceratophyllum demersum Verne Grant and Irving Schneider 1947-9-6 8384 Lassen Creek midway between Eagle Lake and Susanville; creek midway between Eagle Lake and Susanville Comment
  POM89499  Cercocarpus ledifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC29948  Cercocarpus ledifolius var. ledifolius Robin L. Ondricek 1978-6-8 45 Lassen Ridge E of Lower Dry Lake. 1767 Comment
  UC1136909  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  CHSC80142  Chaenactis douglasii Jeanne Boze 1981-6-11 102 Lassen Along roadside, 5.5 mi from Hwy 139 on Horse Lake Road. 1676 Comment
  SD8909  Chaenactis douglasii R. M. Austin Aug 1882 Lassen Comment
  CAS-BOT-BC276614  Chaenactis douglasii var. douglasii Louella Bass 1978-7-11 78 -10 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC276616  Chaenactis douglasii var. douglasii John Thomas Howell 1955-7-19 30813 Lassen E side of Beckwourth Pass 1493 Comment
  CHSC13859  Chaenactis douglasii var. douglasii George Ellmore 1973-6-25 731 Lassen West Eagle Lake on Pelican Point. 1560 Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UCR7839  Chaenactis douglasii var. douglasii Marilyn Malin 1968-6-19 250 Lassen Eagle Lake Biological Station[Chico State Biological Station], 50 ft. NE of the A-Frame cabin 59 Comment
  SEINET7450297 Image available Chaenactis stevioides F. B. Headley 1915-5-28 s.n. Lassen Honeylake Comment
  SEINET10686163  Chamaebatia foliolosa Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 149 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  UC747012  Chamaebatiaria millefolium G. Thomas Robbins 1945-10-6 2151 Lassen nw slope ofCrater Lake Mountain, Lassen National Forest Crater Lake Mountain; Lassen National Forest, Crater Lake Mountain 1981 Comment
  SEINET10937236  Chamaebatiaria millefolium Mary Susan Taylor 1974-5-4 Taylor 220 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CHSC21229  Chamaesaracha nana Robert A. Schlising 1974-6-20 3145 Lassen Near Lower Dry Lake, about 3 mi E of Eagle Lake. Comment
  CHSC36489  Chamaesaracha nana Theresa Costa 1982-6-4 38 Lassen Jct of rd e Murrers Upper Meadow and rd to Dry Lakes. Comment
  UC1609091  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and Lowell Ahart 1993-7-8 5660 Lassen 1.9 mi n Hwy 44 (Pittville Rd., on se edge of lake, between the rr and the lake); Poison Lake 1709 Comment
  UC62593  Cheilanthes intertexta Baker and Nutting 1894-7-3 Lassen Dixey Mts Comment
  UCR265181  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  UC1949078  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment
  CDA3039  Chenopodium botrys T. C. Fuller 1964-10-7 12693 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber. 0 Comment
  UC1191341  Chenopodium glaucum Malcolm A. Nobs and S. Galen Smith 1949-7-22 1072 Lassen Eagle Lake; n shore Comment
  CAS-BOT-BC426318  Chenopodium incognitum John Thomas Howell 1934-6-10 11900 Lassen 5 miles N of Horse Lake on road to Alturas Comment
  CAS-BOT-BC426358  Chenopodium incognitum Margaret Williams; Steven Williams 1974-7-26 s.n. Lassen Near Hallelujah Junction 1493 Comment
  CDA23382  Chenopodium leptophyllum M. K. Bellue 1938-8-1 Lassen Butte Lake. 0 Comment
  CHSC29946  Chenopodium nitens Robin L. Ondricek 1978-8-6 116 Lassen In dried, cracked mud at Lower Dry Lake. 1645 Comment
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Nov 1 2014
  CAS-BOT-BC260781  Chenopodium rubrum var. humile Malcom A. Nobs; S. Galen Smith 1949-7-22 1071 Lassen Northeast shore of Eagle Lake Comment
  CAS-BOT-BC451322  Chimaphila Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  UC1483860  Chimaphila menziesii G. Schoolcraft 1980-7-15 311 Lassen on Big Valley Mt. timber sale area w. of Bieber 1798 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
  CHSC13793  Chrysolepis sempervirens Robert Smallwood 1970-7-9 154 Lassen Gallatin Peak, 1/2 mile west of Dean's Meadow. 1950 Comment
  CHSC21064  Chrysolepis sempervirens M. S. Taylor 1975-7-16 842 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. Comment
  CHSC30554  Chrysolepis sempervirens Sori H. Shad 1970-6-26 20 Lassen Found at the edge of Deans Meadow. 1828 Comment
  CHSC5249  Chrysolepis sempervirens P. Balch 1955-6-12 Lassen Eagle Lake. Forest between Eagle and Pittville Rd. Comment
  UC1135263  Chrysolepis sempervirens A. Simontacchi 1940-8-8 938 Lassen 4.2 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1889 Comment
  UC1135264  Chrysolepis sempervirens A. Simontacchi 1940-6-15 881 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 2164 Comment
  CHSC78477  Chrysothamnus humilis Beth Corbin 2000-7-24 979 Lassen Northeast of Poison Lake, just east of the Pittville Highway. 1705 Comment
  RSA79230  Chrysothamnus nauseosus subsp. albicaulis E. K. Balls, Percy C. Everett 1952-10-10 18135 Lassen 4 miles east of Susan River Bridge, Hwy. 36 1372 Comment
  HSC5341  Chrysothamnus viscidiflorus subsp. viscidiflorus M. T. Milligan 1964-8-6 196 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC1136976  Chrysothamnus viscidiflorus subsp. viscidiflorus L. R. Short and Wm. Gansberg 1936-8-13 S- 494 Lassen Lassen Forest, Burgess Spr. Exp. Range 1770 Comment
  UC747217  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Thomas Robbins 1945-10-7 2154 Lassen 2 to 3 mi ne of Burgess Spring in Harvey Valley (se slope of Harvey Mt.); Lassen National Forest, Harvey Mt. 1828 Comment
  CAS-BOT-BC162753  Chylismia claviformis subsp. cruciformis G. H. True 1937-7-10 791 Lassen Skeedaddle Comment
  JEPS29747  Chylismia claviformis subsp. cruciformis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8502 Lassen 2 mi e Wendel junction (on road past Flanagan to Pyramid Lake, Nevada, in low areas n of Honey Lake) 1219 Comment
  UC1184293  Chylismia claviformis subsp. cruciformis Peter H. Raven and Otto T. Solbrig 1958-6-17 13269 Lassen along US Hwy 395 19.0 mi s Ravendale Comment
  UC1602277  Chylismia claviformis subsp. cruciformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3399 Lassen Amedee Honey Lake Valley Comment
  RSA746510  Cirsium andersonii K. M. Meyer, A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. CA, 1.3 mi. on road 110, off Hwy A21, 1821 Comment
  CAS-BOT-BC278010  Cirsium cymosum Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8596 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1386 Comment
  CDA1169  Cirsium cymosum T. C. Fuller 1963-7-16 10921 -A Lassen West of Hwy 395; 14.3 miles south of Ravendale. 0 Comment
  CHSC60715  Cirsium cymosum Vernon H. Oswald; Lowell Ahart 1993-6-14 5533 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). Between road and lake. 1566 Comment
  CAS-BOT-BC278007  Cirsium cymosum John Thomas Howell 1934-6-10 11908 Lassen Madeline Plains near Termo 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
  CDA1260  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 -B Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. 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
  CAS-BOT-BC285517  Cirsium occidentale var. candidissimum Blanche Clear 1940-7-30 s.n. Lassen Between Manzanita Lake and Burney Falls. On highway Comment
  CDA1489  Cirsium ochrocentrum Lee Wheeler 1959-7-23 s.n. Lassen Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.) Comment
  CDA1490  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14199 Lassen Madeline Plains E base of Dry Valley Ridge, 10 mi. W of Termo, 3 mi N of Termo-Grasshopper Rd. Comment
  CDA1529  Cirsium ochrocentrum T. C. Fuller 1965-10-13 14200 Lassen Madeline Plains E base of Dry Valley Ridge, 10 mi. W of Termo, 3 mi N of Termo-Grasshopper Rd. Comment
  CAS-BOT-BC280424  Cirsium ochrocentrum Lee E. Wheeler 1959-7-23 s.n. Lassen M. A. Mallory prop. Richmond Rd., ca. 4 mi SE/Susanville Comment
  CDA32840  Cirsium ochrocentrum CDFA Staff 1985-6-3 Lassen Madelaine Plains 0 Comment
  CAS-BOT-BC286310  Cirsium scariosum James Jokerst 1983-7-25 1894 Lassen Near Madeline Plains 1614 Comment
  SEINET10474565  Cirsium scariosum Mary Merello 1993-6-27 Merello 745 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  CDA21727  Cirsium undulatum Lee Wheeler 1965-9-21 Lassen Pitt River Ranch, first road going north west of Bailey Creek, first old vacant ranch on left side of road, 18 miles west of Termo. 0 Comment
  CHSC23510  Cirsium vulgare Wayne O. Baum 1971-7-6 71 -56 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC439005  Cistanthe monosperma Jeanne Janish; Carl Janish 1938-9-6 s.n. Lassen Near Summit Lake, Lassen National Park. 2042 Comment
  CAS-BOT-BC233917  Cistanthe umbellata G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley RNA 1554 Comment
  CHSC92753  Clarkia gracilis subsp. gracilis L. P. Janeway 2005-7-4 8465 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  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
  UC506933  Clarkia rhomboidea George A. Fischer, Irwin H. Johnson 1933-7-14 F 246 Lassen Lassen Forest 1767 Comment
  CAS-BOT-BC164868  Clarkia rhomboidea H. D. Ripley; R. C. Barneby 1943-6-13 5693 Lassen South of Milford 1432 Comment
  CHSC80231  Clarkia stellata Jeanne Boze 1981-6-12 108 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 Comment
  CHSC63414  Claytonia rubra subsp. depressa Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6311 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  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
  RSA0039348  Cleome John F. Emmel 1993-7-29 1282 Lassen Honey Lake Valley; ca. 2 air miles NW of Wendel. 1228 Comment
  CHSC64778  Cleome platycarpa Vernon H. Oswald 1995-5-31 6805 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  JEPS79144  Cleome platycarpa L. R. Heckard with R. Bacigalupi 1980-6-11 5248 Lassen 11.3 mi. n. Litchfield (along U.S. 395, s. of Deep Creek crossing) 1463 Comment
  JEPS94360  Cleome platycarpa Vernon H. Oswald and Lowell Ahart 1997-5-7 8403 Lassen Smoke Creek Ranch Road 3.4 mi w of California-Nevada State Line; Smoke Creek Ranch Road 1420 Comment
  CAS-BOT-BC32957  Cleomella alata C. C. (Mrs.) Bruce 1898-6-1 2364 Lassen Shumway Comment
  POM93741A  Cleomella parviflora Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC108005  Collinsia parviflora Lowell Ahart; John Dittes 2011-6-20 17487 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC116917  Collinsia parviflora J. P. Bergmann 2011-4-30 Lassen Fort Sage OHV Recreation Area. 1450 Comment
  UC1143037  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1737 Comment
  SEINET10931315  Collinsia parviflora Katherine L. Morris 1973-5-25 Morris 240 Lassen Collected 7.6 mi nw of jct of hwy 36 & 44 on hwy 44 in an area of yellow pine And incense cedar; very moist area. Comment
  RSA128300  Collinsia torreyi Peter H. Raven, Otto T. Solbrig 1958-6-16 13249 Lassen 4.5 miles east of Westwood on Hwy 36. Comment
  UC1143017  Collinsia torreyi var. latifolia August L. Hormay 1934-6-30 Lassen Lassen National Forest, Harvey Mountain Harvey Mountain; Lassen National Forest, Harvey Mountain 2133 Comment
  RSA523347  Collomia grandiflora G. H. True 1938-7-9 906 Lassen Near Horse Lake 1524 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
  JEPS94551  Collomia linearis Vernon Oswald and Lowell Ahart 1997-6-24 8621 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville on n side of Diamond Mountain at an impoundment on edge of Forest Rd 29N43 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 Comment
  CHSC80232  Collomia tinctoria Jeanne Boze 1981-6-12 109 Lassen On hillside along road to 5 corners about 3 mi from Eagle Lake Field Station. 1706 Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  CAS-BOT-BC179604  Comandra umbellata subsp. pallida G. Schoolcraft 1989-6-7 1908 Lassen NW slope of Shaffer Mtn. near top 2011 Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  JEPS74351  Cordylanthus maritimus subsp. canescens L. R. Heckard, T. I. Chuang and R. Bacigalupi 1974-7-25 3769 Lassen 4.6 mi n U. S. 395 (along County route A-3 (near old school house, several mi w of Honey Lake); Honey Lake 1219 Comment
  UC26324  Cordylanthus maritimus subsp. canescens J. Burtt Davy Jun 17 1897-Jun 24 1897 3396 Lassen Amedee Honey Lake Valley Comment
  UC761797  Cordylanthus ramosus R. F. Hoover 1940-9-28 4640 Lassen Leavitt Comment
  CAS-BOT-BC212204  Cornus sericea Clare B. Hardham 1971-8-22 18903 Lassen Diamond Mountain Comment
  CAS-BOT-BC212206  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  RSA38461  Cornus stolonifera P. A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  CHSC118478  Corydalis aurea Allison Sanger 2015-5-28 Lassen Lassen National Forest. Eagle Lake Ranger District. Outlet of Papoose Meadows, above rock weir blocking outlet. 1624 Comment
  UC1136839  Crepis acuminata George A. Fischer and Irwin H. Johnson 1933-7-14 F- 266 Lassen Lassen <National> Forest 1752 Comment
  UC581278  Crepis bakeri subsp. cusickii G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2331 Lassen valley flat along road halfway between Bogard Ranger Station and Harney Valley 1630 Comment
  UC1609226  Crepis modocensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5614 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  UC581246  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2298 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UC581285  Crepis modocensis subsp. subacaulis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2278 Lassen Diamond Mt.; summit and e slope Comment
  CAS-BOT-BC376532  Crepis monticola G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-6 2193 Lassen Susanville, just west of the town, on Inspiration Point Comment
  CAS-BOT-BC376557  Crepis occidentalis subsp. conjuncta A. A. Heller 1938-6-23 15201 Lassen Valley east of Fredonyer Pass Comment
  UC581317  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2218 Lassen 6 mi s Ravensdale 1676 Comment
  CAS-BOT-BC290750  Crepis occidentalis subsp. occidentalis Doris Kildale Gillespie 1930-5-12 9337 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC376564  Crepis occidentalis subsp. occidentalis M. S. Taylor 1982-5-29 4562 Lassen NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno Comment
  CAS-BOT-BC290824  Crepis occidentalis subsp. pumila David D. Keck; J. Clausen 1935-6-25 3759 Lassen Susanville 1340 Comment
  SEINET3158253  Cressa cretica M. E. Jones 1897-6-23 sn Lassen Amedee 1219 Comment
  CHSC67080  Cressa truxillensis Jeanne Boze 1981-6-11 106 Lassen Outer edge of Horse Lake, 11 1/2 mil. from 139 on Horse Lake Rd. 1539 Comment
  UCD59985  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  SBBG6231  Cryptantha affinis H. and M. Dearing 1938-6-30 2226 Lassen ca. 50 mi W of Susanville Comment
  HSC81480  Cryptantha ambigua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6016 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  UC726048  Cryptantha ambigua A. A. Heller 1938-6-23 15206 Lassen e of Mapes (on U.S. Highway 395) 1371 Comment
  CHSC5035  Cryptantha circumscissa L. B. Barlow 1967-7-12 110 Lassen Vic. Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC64765  Cryptantha circumscissa Vernon Oswald 1995-5-24 6785 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. 1219 Comment
  CAS-BOT-BC189459  Cryptantha circumscissa var. circumscissa Elmer I. Applegate 1934-5-4 8933 Lassen Secret Valley, 20 miles S of Ravendale 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
  CHSC75468  Cryptantha humilis Vernon H. Oswald; Lowell Ahart 1999-6-19 9743 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  UC1483850  Cryptantha humilis G. Schoolcraft 1979-5-13 50 Lassen on ridge top of Skedaddle mtns. Skedaddle Mtns. 2286 Comment
  UC79293  Cryptantha simulans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  SEINET10497287  Cryptantha torreyana Mary Susan Taylor 1974-1 Taylor 280 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS107811  Cryptantha watsonii Lowell Ahart, John Dittes 2005-6-2 11949 Lassen Long Valley, along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction 1498 Comment
  SEINET8191424  Cryptantha watsonii F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  UC1748364  Cupressus bakeri L. P. Janeway and B. Castro, Loren Gehrung 1999-10-10 6595 B Lassen about 0.2 mi SE of Cypress Trailhead into Thousand Lakes Wilderness Area (near Eiler Creek between Fraener Peak and Horse Heaven Buttes); High Cascade Range 1658 Comment
  CHSC23497  Cuscuta Wayne O. Baum 1971-7-14 71 -63 Lassen Gallatin Peak. 2011 Comment
  UCD54418  Cuscuta approximata Jerry Schmierer 1986-9-1 s.n. Lassen Don Blickenstaff Ranch. Comment
  CDA39916  Cuscuta californica var. breviflora T. C. Fuller 1963-7-16 10922 Lassen Hwy 395 to Ravendale, 10 miles north of Litchfield. 0 Comment
  UC193142  Cycladenia humilis var. humilis J. G. Lemmon Lassen near Shasta (Black Cone); ; Black Cone, near Shasta Comment
  CAS-BOT-BC114167  Cyperus squarrosus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49512 Lassen Elysian Valley, W of Janesville. 1325 Comment
  CHSC66868  Cyperus squarrosus Vernon H. Oswald; Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir SW of Westwood. Along the receding marshy edge of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  UC4436  Cypripedium californicum Mrs. R. M. Austin 1882-1 Lassen Mt. Dyer Comment
  SEINET7725892  Cypripedium californicum Unknown Lassen Mt. Dyer 1829 Comment
  CAS-BOT-BC70537  Cystopteris fragilis Clare B. Hardham 1961-6-16 7461 Lassen Diamond Peak Comment
  CAS-BOT-BC70565  Cystopteris fragilis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16356 Lassen near NE end of Eagle lake Comment
  UC1522132  Dalea ornata Arnold Tiehm, Raymond Evans, and James Young 1984-6-7 8592 Lassen 7.5 air mi. n.-n.w. of Litchfield (n.w. side of Shaffe Mt.); Shaffe Mt. 1371 Comment
  CHSC29916  Damasonium californicum Robin L. Ondricek 1978-7-5 83 Lassen Along the edges of Mahogany Lake. 2057 Comment
  CHSC99298  Damasonium californicum Lowell Ahart; John Dittes 2008-6-20 14941 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA8224  Damasonium californicum Elmer I. Applegate 1929-6-24 5882 Lassen Near Bieber. Comment
  UC1100145  Damasonium californicum Malcolm A. Nobs, Calvin McMillan 1949-6-15 784 Lassen Nubieber Comment
  UC1483795  Damasonium californicum G. Schoolcraft 1979-6-26 98 Lassen Buckthorn Lake n.w. of Pyramid Lake 1889 Comment
  UC527  Damasonium californicum J. Burtt Davy Jun 17 1897-Jun 24 1897 3335 Lassen Honey Lake Valley, Susan R. 1219 Comment
  UC985942  Damasonium californicum Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 755 Lassen on Great Northern R.R. <Nubeiber> (Hwy. 299); , Great Northern R.R. Comment
  CAS-BOT-BC445515  Damasonium californicum M. S. Taylor 1982-6-12 4647 Lassen On n side of Susan River (West Fork), s side of hwy 36, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  JEPS124716 Image available Damasonium californicum B. Corwin 1964-7-1 123 Lassen Under bridges between Bieber and New Bieber on rte. 299. Comment
  CAS-BOT-BC189863  Danthonia californica John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC53341  Danthonia californica M. S. Baker and Frank Nutting 1894-7-2 Lassen Pine Creek Comment
  CHSC66281  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1996-6-24 7839 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
  HSC69064  Danthonia unispicata Gary Schoolcraft 1980-7-28 332 Lassen Meadow E of Tule Mountain. 2043 Comment
  UC1024799  Danthonia unispicata Leo Whitney 1935-6-24 3298 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC1609107  Danthonia unispicata Vernon H. Oswald and Lowell Ahart 1993-6-28 5579 Lassen Harvey Valley Rd. (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  UCD61076  Danthonia unispicata L. Whitney 1935-6-24 Lassen Ashurst Mt., N of Harvey Valley, ca. 35 mi. NW of Susanville. Comment
  UCD61297  Danthonia unispicata F. C. Raney 1966-6-25 Lassen Harvey Valley, Lassen National Forest. Comment
  JEPS79213  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  CHSC106590  Delphinium andersonii C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  UC726248  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
  CHSC6242  Delphinium glaucum A. Santos 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  UC726275  Delphinium nudicaule A. A. Heller 1940-5-22 15663 Lassen hill back of Westwood Cemetery (station several mi w of type station) Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  CAS-BOT-BC116049  Delphinium nuttallianum M. M. Hanna 1956-6-3 910 -913 Lassen Grassy slope above Hiway 299. 87.3 mi. E. of Redding, Calif. Comment
  CAS-BOT-BC116053  Delphinium nuttallianum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen West slope, Fredonyer Pass, 13.5 miles west of Susanville 1554 Comment
  HSC27055  Delphinium nuttallianum John Pratt 1970-6-11 5 Lassen Fredonyer Pass 1738 Comment
  CAS-BOT-BC194265  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen Snag Lake, margin of gravel bars 100 yards above lake near south shore - Lassen Volcanic National Park 1850 Comment
  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
  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-BC192742  Deschampsia danthonioides Louella Bass 1973-5-29 EU 57 Lassen Elysian Valley 1325 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
  POM114878  Deschampsia danthonioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  RSA185317  Deschampsia danthonioides Clare B. Hardham 1961-6-17 s.n. Lassen Baxter Creek, south of Susanville 1677 Comment
  CAS-BOT-BC201812  Deschampsia elongata Clare B. Hardham 1971-8-22 18375 Lassen Diamond Mountain 2346 Comment
  UC1131561  Deschampsia elongata A. Simontacchi 1940-7-3 919 Lassen 3.5 mi. w.-s.w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  UCD63431  Deschampsia elongata L. Whitney 1933-8-3 Lassen Slate Creek. 1920 Comment
  UCD63522  Deschampsia elongata Malcolm A. Knobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles N of Madeline. Comment
  UC1542918  Descurainia californica G. Schoolcraft and B. Ertter 1987-6-16 1747 Lassen Skedaddle Mtns. 1828 Comment
  UC1609092  Descurainia incisa subsp. filipes Vernon H. Oswald and Lowell Ahart 1993-7-8 5656 Lassen ne edge Poison Lake (1.9 mi n of Hwy 44, Pittville Rd (Lassen 111, 36N01), ridge between railroad and lake) 1709 Comment
  CAS-BOT-BC43089  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  CAS-BOT-BC43164  Descurainia pinnata subsp. brachycarpa John Thomas Howell 1976-7-20 52023 Lassen Sierra Nevada. Bottom flatas along Willard Creek near its confluence with Susana River. 1432 Comment
  CHSC5236  Descurainia sophia P. Balch 1955-7-18 Lassen Stafford's Resort, Eagle Lake. 1615 Comment
  CAS-BOT-BC292259  Dieteria canescens John Thomas Howell 1974-7-8 50470 Lassen Susanville 1295 Comment
  HSC82268  Dieteria canescens var. canescens Thomas W. Nelson, Jane P. Nelson 1980-7-6 5996 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC73995  Dieteria canescens var. canescens J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley 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
  JEPS30487  Dieteria canescens var. shastensis Peter H. Raven with Otto T. Solbrig 1958-6-15 13244 Lassen 5.7 mi w Westwood (on State Highway 36) 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-BC153675  Diplacus mephiticus M. S. Baker; Frank Nutting 1894-7-12 s.n. Lassen Pine Creek 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
  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
  CAS-BOT-BC151430  Diplacus nanus H. D. Ripley; R. C. Barneby 1944-5-30 5977 Lassen Mouth of Madeline - Sierra Nevada 1706 Comment
  RSA0011496  Dipsacus fullonum R. F. Thorne, Larry E. DeBuhr 1975-8-22 46971 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC208724  Distichlis spicata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16339 Lassen On dam forming reservoir north of road 13.5 mi. E of Susanville Comment
  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
  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
  UC1553397  Dodecatheon conjugens G. Schoolcraft 1988-4-25 1783 Lassen Ash Valley RNA/ACEC 16 mi e Adin; Ash Valley RNA/ACEC e of Adin 1554 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
  RSA59710  Dodecatheon conjugens E. K. Balls 1950-5-18 14766 Lassen Above Ash Creek Public Camp., off rd. from Adin to Madeline. 1616 Comment
  SEINET8561548  Dodecatheon conjugens M. J. Williams 1969-5-24 s.n. Lassen Ca 0.5 mile N of Bogart Ranger Station. Comment
  CHSC4763  Downingia bacigalupii R. Carter 1967-7-16 622 Lassen Growing in drying vernal pool along side rd. Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  UCR119111  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Modoc Plateau, 5 miles west of Susanville. 1448 Comment
  RSA113687  Downingia bacigalupii H. K. Sharsmith 1955-6-27 4512 Lassen Adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1220 Comment
  CHSC59527  Downingia bicornuta Mary Meyer 1980-7-9 506 Lassen Horse Camp Springs, down-stream in cow pod. 1706 Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  POM260453  Downingia bicornuta C. L. Hitchcock 1940-5-26 6645 Lassen Overflow of Pitt River, 1 mile W of Bieber. Comment
  JEPS22792  Downingia bicornuta var. bicornuta Robert W. Gardner 1936-1 Lassen Poison Lake (Poison Lake is about 6 mi se of Halls Flat R.S. in sw Lassen County--R. Bacigalupi, 1957) Poison Lake 1676 Comment
  JEPS22793  Downingia bicornuta var. bicornuta August L. Hormay 1934-5-15 Lassen 1 mi ne Halls Flat Railroad Station (on the Keddie-Nubieber (freight) branch of the W.P.R.R.) 1554 Comment
  UC1101473  Downingia bicornuta var. bicornuta Herbert L. Mason and Verne Grant 1947-7-9 13291 Lassen 5 mi e Bieber Comment
  SJSU3174  Downingia insignis J. W. Tilden 1958-6-27 1290 Lassen Madeline Comment
  UC1188739  Downingia insignis John H. Weiler, L. Constance, and E. Molseed 1960-6-13 60163 Lassen 1.7 mi s Ravendale (w side of U.S. Highway 395) Comment
  UC1520665  Downingia insignis Noel H. Holmgren and Patricia K. Holmgren 1978-6-10 8902 Lassen 9 mi ene (8 mi air distance) Termo; Madeline Plains, Coyote Flat 1630 Comment
  SEINET10702760  Downingia insignis David B. Dunn 1956-7-3 Dunn 11924 Lassen Alkaline sink by roadside, extra runoff from Hwy. 395. 11 mi. S of Madeline. Comment
  CAS-BOT-BC266471  Downingia laeta Wm. Anderson 1960-6-16 s.n. Lassen Along county road 0.25 mile S of Mapes Ranch, Honey Lake Valley Comment
  CAS-BOT-BC266473  Downingia laeta Malcom A. Nobs; S. Galen Smith 1949-7-20 1047 Lassen Bieber, along Highway 299 Comment
  CHSC99496  Downingia laeta Lowell Ahart; John Dittes 2008-6-20 14928 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  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
  JEPS107454  Draba verna var. aestivalis Lowell Ahart, John Dittes 2005-6-1 11901 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
  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
  JEPS128410  Drymocallis glandulosa Catherine Bauer with Ellen Bauer Benson 2017-8-16 18 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  CHSC112989  Elatine Lowell Ahart; John Dittes 2013-7-23 18890 Lassen Around a man made pond, 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
  CHSC116201  Elatine californica Lowell Ahart; John Dittes 2015-7-13 20296 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
  RSA0011453  Eleocharis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46985 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  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
  JEPS120126  Eleocharis macrostachya Lowell Ahart, John Dittes 2012-7-9 18293 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0039534  Eleocharis macrostachya Lowell A. Ahart, John Dittes 2012-7-9 18293 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC112848  Eleocharis macrostachya R. K. Gierisch 1968-7-12 3359 Lassen Hwy 36, 1 mi E of Fredonyer Pass. 1706 Comment
  RSA127038  Eleocharis quinqueflora Robert W. Gardner 1939-6-15 G- 36 Lassen Little Harvey Valley 1700 Comment
  CAS-BOT-BC221829  Elymus canadensis Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CHSC111247  Elymus cinereus B. Castro; L. P. Janeway 2012-7-2 1937 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Mountains; corral at 'Skedaddle Ranch. 1577 Comment
  SEINET12737887  Elymus cinereus M. Church 2016-7-26 14 Lassen Between Hwy 395 and Petersen Mountain, N of Hallelujah Junction. 1412 Comment
  CAS-BOT-BC227492  Elymus elymoides Louella Bass 1973-6-3 EU 97 Lassen Elysian Valley 1325 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
  CHSC30616  Elymus elymoides subsp. elymoides M. A. Dubin 1975-7-20 10 Lassen Eagle Lake Field Station, 200 yards north of classroom. 1569 Comment
  UC1136930  Elymus elymoides subsp. elymoides George A. Fischer and Irwin H. Johnson 1933-7-12 F 214 Lassen Lassen <National> Forest 1722 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
  JEPS128171  Elymus elymoides var. californicus M. C. Mahoney, J. A. Nash 2017-7-31 CA 350 -86 Lassen On Fredonyer Peak. From Susanville take Highway 139 N towards Eagle Lake and turn right following signs for Fredonyer Peak Fire Lookout. Towards the top, stay right at both forks in the road. Follow the road past the last fork for two miles. Population is on both sides of the road. Comment
  UC7793970  Elymus glaucus L. R. Short and Wm. Gansberg 1936-7-3 S- 470 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1859 Comment
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  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
  UCD62558  Elymus repens John Thomas Howell 1973-7-10 49791 Lassen Susanville. In city park. Comment
  UC1037126  Elymus trachycaulus Leo Whitney 3261 b Lassen Fruit Grower's Supply Co. Camp 10 Lassen National Forest (dry creek) Comment
  UC188858  Elymus trachycaulus Milo S. Baker Lassen mts. s Dixie Valley Comment
  UCD62664  Elymus trachycaulus L. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  CAS-BOT-BC204360  Elymus trachycaulus subsp. trachycaulus J. Burtt Davy 1897-6-17 s.n. Lassen Honey Lake Valley Comment
  JEPS123855  Elymus trachycaulus subsp. trachycaulus Lowell Ahart, John Dittes 2015-7-14 20332 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  SEINET12758322  Elymus triticoides D. Snider 1942-8-30 s.n. Lassen Pine Creek Camp. 1524 Comment
  NY70804  Ephedra viridis D. W. McNeal 1980-6-1 2337 Lassen Above Highway 139, 5.4 miles north of the junction of Highway 36 in Susanville Comment
  UCR67446  Ephedra viridis George K. Helmkamp 1990-9-23 B- 17 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 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
  UC1537612  Epilobium brachycarpum Gordon H. True Jr. 1936-6-26 550 Lassen head of creek 2 mi e Eagle Lake; Willow Creek 1584 Comment
  UC507002  Epilobium brachycarpum George A. Fischer and Irwin H. Johnson 1933-7-12 F 191 Lassen Dry Lake Lassen National Forest, Grass Valley 1694 Comment
  HSC16337  Epilobium brachycarpum M. T. Milligan 1964-8-23 237 Lassen Above Eagles Nest on main road, Eagle Lake 1829 Comment
  HSC22866  Epilobium brachycarpum John Pratt 1970-6-14 17 Lassen Comment
  NY999879  Epilobium brachycarpum W. W. Eggleston 1910-9-3 6309 Lassen Vicinity of Doyle Station 1240 Comment
  JEPS121248  Epilobium campestre Lowell Ahart, John Dittes 2013-7-22 18850 Lassen About 30 yards S of the man-made pond, about 120 yards south of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles northeast of Bieber, Big Valley. Comment
  UC303060  Epilobium canum subsp. latifolium Pearl Safford 111 Lassen Susanville [uncertain locality] Comment
  JEPS121238  Epilobium ciliatum subsp. ciliatum Lowell Ahart, John Dittes 2013-7-22 18856 Lassen 30 yards S of the man-made pond, about 120 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC20216  Epilobium ciliatum subsp. ciliatum M. S. Baker and Frank Nutting 1894-7-25 Lassen Willow Creek Comment
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  UC1924229  Epilobium hallianum Debra Valov 2005-8-19 2005218 Lassen Eagle Lake; Hwy 139, Mi. marker 25 1554 Comment
  HSC95313  Epilobium oregonense Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 688 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC96704  Epilobium palustre Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 538 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  HSC95344  Epilobium palustre Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 538 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC99141  Epilobium torreyi Lowell Ahart; John Dittes 2008-6-19 14878 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  HSC82195  Epilobium torreyi Thomas W. Nelson, Jane P. Nelson 1980-7-6 6050 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC57305  Equisetum laevigatum Clare B. Hardham 1969-8-28 17458 Lassen west of Janesville Comment
  CHSC25085  Equisetum laevigatum K. R. Stern 1967-7-1 2465 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  CHSC66369  Equisetum laevigatum Vernon H. Oswald; Lowell Ahart 1996-6-17 7820 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  JEPS88087  Equisetum laevigatum Vernon H. Oswald and Lowell Ahart 1996-6-17 7820 Lassen ca. 7 mi w Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, at 6 mi post of Devil's Corral Trailhead); Modoc Palteau 1420 Comment
  UC62615  Equisetum laevigatum Baker and Nutting 1894-7-5 Lassen <Dixay> Valley 1066 Comment
  CAS-BOT-BC57301  Equisetum laevigatum Barbara Shervanick 1974-5-7 1262 Lassen Highway 395, just south of Milford, Cascade Range 1371 Comment
  CHSC77263  Eragrostis cilianensis G. Schoolcraft 1997-8-20 2700 Lassen Safeway parking lot in Susanville. 1264 Comment
  CAS-BOT-BC284042  Eragrostis minor John Thomas Howell 1976-7-19 51942 Lassen Susanville, Sierra Nevada 1287 Comment
  NY1057003  Eremogone congesta var. simulans B. J. Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  NY1057004  Eremogone congesta var. simulans A. J. Cronquist 1959-6-17 8463 Lassen 50 miles southeast of Susanville Comment
  CHSC118851  Eremogone congesta var. subcongesta L. P. Janeway; B. Castro 2015-6-5 11763 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley toTuledad Canyon, 7.4 road-km south ofSurprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC68745  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1997-5-27 8485 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  CHSC72310  Eremogone congesta var. subcongesta L. P. Janeway; Glenn Clifton 1998-7-9 5730 Lassen Ridgetop saddle, 1.0 mi east of Diamond Mtn. 2215 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-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC159993  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen North of Balls Canyon on U. S. Highway #395 Comment
  UCD150407  Eremothera boothii subsp. alyssoides William Anderson 1963-6-2 s.n. Lassen Wendel. Comment
  CHSC100870  Eriastrum signatum L. P. Janeway 2008-8-2 9533 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  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
  CHSC6201  Eriastrum signatum M. West 1946-7-2 Lassen Spalding's, Eagle Lake. 1554 Comment
  CDA39986  Eriastrum signatum T. C. Fuller 1980-8-6 20323 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  JEPS103167  Eriastrum signatum Beth Corbin 2002-10-2 1115 Lassen Grasshopper Valley, S of Termo-Grasshopper Road. 1633 Comment
  NY1012886  Eriastrum sparsiflorum W. W. Eggleston 1911-7-8 7191 Lassen Vicinity of Doyle Station 1290 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
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  SEINET10723416  Ericameria bloomeri Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 155 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  UC1136849  Ericameria bloomeri L. R. Short and J. Warren 1936-8-17 S- 497 Lassen Burgess Spr. Exp. Range Lassen Forest 1767 Comment
  CHSC23484  Ericameria nauseosa Wayne O. Baum 1971-7-29 71 -57 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC298179  Ericameria nauseosa var. oreophila John Thomas Howell 1924-8-13 s.n. Lassen Near Doyle Comment
  UCD54569  Ericameria nauseosa var. oreophila Ellen Dean; Dawn Cunningham 2005-10-25 2752 Lassen East of the town of Susanville. Property N of California Correctional Facility. 1248 Comment
  CAS-BOT-BC294182  Ericameria nauseosa var. speciosa Margaret Williams 1974-8-4 74 -L-71 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC299483  Ericameria nauseosa var. washoensis Gary Schoolcraft 1984-8-27 1369 Lassen Upper Tuledad Canyon 1676 Comment
  SEINET8198339 Image available Ericameria parryi var. parryi D. W. Taylor 2002-8-10 18310 Lassen Plumas National Forest Road 24N02X 1.2 air miles from Constantina Road, East slope Diamond Mountains (ca. 4 air miles South of Doyle) 1433 Comment
  CHSC78479  Ericameria suffruticosa Vernon H. Oswald 2000-7-31 9946 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  UC1561814  Erigeron aphanactis var. aphanactis Barbara Ertter with Gary Schoolcraft 1987-6-16 7176 Lassen on ne side Honey Lake (e of road over saddle on w side of range); Skeedaddle Mountains 1645 Comment
  CAS-BOT-BC294491  Erigeron bloomeri var. bloomeri Doris Kildale Gillespie 1930-5-13 9364 Lassen Between Susanville and Janesville Comment
  CHSC117135  Erigeron bloomeri var. bloomeri L. P. Janeway; B. Castro 2015-6-5 11759 Lassen Great Basin, Modoc lateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CHSC52763  Erigeron bloomeri var. bloomeri L. P. Janeway 1990-7-4 3768 Lassen On knob ca 0.8 mi NE of Meadowview Peak. 1981 Comment
  CHSC67162  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge n of a drainage. 1584 Comment
  CHSC67463  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of rodge N of drainage. 1584 Comment
  JEPS117490  Erigeron bloomeri var. bloomeri Lowell Ahart, John Dittes 2010-7-31 17010 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  UCR45383  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6034 Lassen Ash Valley, along branch road off Adin-Madeline Road just south of bridge over Ash Creek, & c. 16 mi. SE of Adin; 2.5 mi. SE of junction with main road 1555 Comment
  CAS-BOT-BC294484  Erigeron bloomeri var. bloomeri G. Schoolcraft 1998-6-30 2745 Lassen N. end of Ft. Sage Mtns. 1950 Comment
  CAS-BOT-BC294493  Erigeron bloomeri var. bloomeri Ella Dales Cantelow 1941-5-22 3566 Lassen Few mi. n. of Litchfield. U.S. Hy. 395 to Alturas Comment
  RSA636042  Erigeron bloomeri var. bloomeri Michael A. Vincent 1999-6-9 8583 b 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
  CHSC23483  Erigeron cervinus Wayne O. Baum 1971-7-12 71 -58 Lassen Slope of Gallatin Peak. 2042 Comment
  CAS-BOT-BC297196  Erigeron coulteri Clare B. Hardham 1971-8-22 18398 Lassen Diamond Mountain 2133 Comment
  CHSC65297  Erigeron divergens Vernon H. Oswald; Lowell Ahart 1995-8-14 7193 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small stream, N of Susanville. 1676 Comment
  JEPS41774  Erigeron divergens W. L. Jepson 1918-8-2 7778 Lassen Beckwith Pass 1463 Comment
  JEPS84932  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca .75 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  CAS-BOT-BC296899  Erigeron eatonii var. eatonii A. M. Vollmer; L. Beane 1953-7-1 50 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC89752  Erigeron eatonii var. plantagineus L. P. Janeway 2004-6-26 8156 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  JEPS100338  Erigeron eatonii var. plantagineus Dean W. Taylor 2001-7-19 17844 Lassen Diamond Mountains, ridgecrest ca. 1 air mile South of Doyle Grade 2072 Comment
  JEPS94485  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1997-5-27 8520 Lassen 3.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat); Forest Route 38N04 1725 Comment
  UC1136837  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 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
  CHSC68735  Erigeron elegantulus Vernon H. Oswald; Lowell Ahart 1997-5-27 8492 Lassen West side of Hwy. 139 south of Willow Creek Guard Station, 0.9 mi south of Forest Road 38N04 to Coyote Flat. Along road and adjacent slope. 1577 Comment
  CAS-BOT-BC295183  Erigeron inornatus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49515 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC295181  Erigeron inornatus John Thomas Howell 1974-7-10 50516 Lassen Janesville 1295 Comment
  UC2027204  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen National Forest. N of 30N61, W of A21. Swain Mountain quadrangle Comment
  CAS-BOT-BC295472  Erigeron lassenianus var. lassenianus Parkison 1916-6-21 40 Lassen Lassen National Forest. Near Patterson Cabin 1706 Comment
  HSC63770  Erigeron linearis Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  SD9017  Erigeron nivalis Mrs. R. M. Austin 1882-8-10 Lassen Lassen Peak Comment
Read comments
Apr 29 2013
  POM32998  Erigeron philadelphicus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  RSA59554  Erigeron pumilus subsp. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mile SE of Milford, Hwy. 395, above Honey Lake 1280 Comment
  CHSC86949  Erigeron pumilus var. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  UC1567402  Erigeron pumilus var. intermedius G. Schoolcraft 1989-6-19 1916 Lassen Ash Valley RNA/ACEC , Susanville 1554 Comment
  CAS-BOT-BC300119  Erigeron pumilus var. intermedius Clare B. Hardham 1961-6-17 7504 Lassen Sierra Nevada Mountains. Baxter Creek 1676 Comment
  NY243318  Eriogonum baileyi G. Schoolcraft 1985-7-29 1490 Lassen Western slopes of Ft. Sage Mtns. 1402.1 Comment
  UCD99771  Eriogonum baileyi Margaret Williams; Steven Williams 1974-7-26 74- 4 - Lassen near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  CHSC7738  Eriogonum caespitosum Beverley J. Wise 1969-5-3 78 Lassen 3.4 mi east of junction with Hwy 395 on Las. Co. Rd. 338 (Smoke Creek Road). 1584 Comment
  SEINET8513012  Eriogonum caespitosum A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 s.n. Lassen Constantia Allotment, West of Peterson's 1490 Comment
  CAS-BOT-BC241835  Eriogonum caespitosum Pauleen Broyles 1977-5-30 150 Lassen Ca. 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Creed [Creek] Road, ca 8 km ne of Herlong 1660 Comment
  RSA509426  Eriogonum douglasii G. R. Ballmer 1988-7-19 s.n. Lassen Warner Mountains, vicinity of Blue Lake 1738 Comment
  CAS-BOT-BC246501  Eriogonum douglasii var. meridionale Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  CAS-BOT-BC246503  Eriogonum douglasii var. meridionale John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50662 Lassen Summit ridge of Diamond Mt. 2346 Comment
  JEPS118162  Eriogonum douglasii var. meridionale Dean W. Taylor 2009-5-21 20603 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  SEINET10479490  Eriogonum elatum Taylor 1982-8-27 Taylor 5055 Lassen T24N R17E sw/sw sec 7. Constantia quad. Crystal Peak summit area, Diamond Mts, ca. 6 air mi sw of Doyle. 7800 ft. Comment
  CAS-BOT-BC246511  Eriogonum elatum var. elatum Margaret Williams 1974-7-27 74 -L-45 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC259389  Eriogonum luteolum Ernest C. Twisselmann 1961-9-21 6571 Lassen Harvey Valley Road, ca. 14 miles south of Pitville [Pittville] 1219 Comment
  CAS-BOT-BC263044  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  CHSC100890  Eriogonum maculatum L. P. Janeway 2008-8-2 9532 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  RSA739645  Eriogonum maculatum L. P. Janeway 2008-8-2 9532 Lassen Modoc Plateau just above th flats along the S side of Rusch Creek, S side of Smokey Creek Ranch road 1.8km W of the CA-NV line. 1349 Comment
  UCR92118  Eriogonum maculatum G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  JEPS104110  Eriogonum microthecum var. ambiguum Lowell Ahart 2003-8-17 10518 Lassen Small drainage, ca 100 yd w of the cattle guard, on the se side of Smoke Creek Ranch Rd, ca 8-9 mi (air) ne of Highway 395, ca 30 mi (air) ne of Susanville. 1450 Comment
  NY281555  Eriogonum microthecum var. laxiflorum E. K. Balls 1952-10-10 18143 Lassen In Northern Juniper Woodland, 8 mi. s.e. of Ravendale, Hwy 395, between Susanville and Alturas. 1280.2 Comment
  NY572524  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-7-20 807 Lassen Lower slopes of Wagner Canyon 1402.1 Comment
  CAS-BOT-BC266368  Eriogonum nudum var. deductum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49514 Lassen West of Janesville, Elysian Valley, Sierra Nevada 1325 Comment
  SD13333  Eriogonum nudum var. nudum R. V. Chamberlain 1935-9-8 6584 Lassen Guernsey Creek Comment
  CAS-BOT-BC269826  Eriogonum nudum var. pubiflorum John Thomas Howell 1934-7-8 12498 Lassen Spalding's, Eagle Lake Comment
  JEPS126468  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-27 CA 350 -071 Lassen Along Rice Canyon Road and into Rice Canyon. Comment
  UC1542948  Eriogonum nudum var. pubiflorum G. Schoolcraft 1987-7-8 1760 Lassen about 8 mi s Adin (Lonkey Hill); Lonkey Hill 1463 Comment
  UC412801  Eriogonum nudum var. pubiflorum Franklin P. Nutting Lassen Big Valley Comment
  SEINET5330981  Eriogonum nummulare A. Tiehm 1978-1 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan. About 1.7 miles W of the Nevada line 1524 Comment
  SBBG65173  Eriogonum ovalifolium S. W. Hutchinson -Jun-1925 Lassen Eagle Lake to Caribou Lake 1828 Comment
  CHSC12948  Eriogonum prociduum var. prociduum K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5813 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  HSC30039  Eriogonum spergulinum var. reddingianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19162 Lassen 3 mi. N of Westwood Comment
  POM105812  Eriogonum spergulinum var. reddingianum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  UC699730  Eriogonum spergulinum var. reddingianum Farris Farris 1936-6-15 Lassen Eagle Lake road 1524 Comment
  UC773863  Eriogonum spergulinum var. reddingianum L. R. Short and D. Gish 1936-6-2 S- 375 Lassen Burgess Spring Experiment Range Lassen National Forest, Burgess Spring Experiment Range 1798 Comment
  RSA122742  Eriogonum spergulinum var. reddingianum L. R. Short, Jan Gish 1936-6-2 S- 375 Lassen Jeffrey ponderosa pine. 1799 Comment
  NY283102  Eriogonum sphaerocephalum G. Schoolcraft 1982-7-6 765 Lassen Fort Sage Mountains 1950.7 Comment
  CHSC86947  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7190 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  HSC63565  Eriogonum sphaerocephalum var. halimioides Thomas W. Nelson, Jane P. Nelson 1980-7-6 5998 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  NY283113  Eriogonum sphaerocephalum var. halimioides H. D. D. Ripley 1943-6-13 5710 Lassen South of Johnstonville 1325.9 Comment
  SEINET530721  Eriogonum sphaerocephalum var. halimioides Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  SEINET530688  Eriogonum strictum Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  JEPS117571  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2010-7-31 16989 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  CAS-BOT-BC262770  Eriogonum strictum var. proliferum Doris Kildale Gillespie 1930-5-13 9365 Lassen Between Susanville and Janesville Comment
  JEPS85787  Eriogonum strictum var. proliferum Roy E. Buck, Robert A. Price 1988-6-26 1028 Lassen on subsidiary peak ca. 0.5 air km n main summit (Fredonyer Peak; ca. 30 air km nne of Susanville); Fredonyer Peak 2377 Comment
  UC85813  Eriogonum strictum var. proliferum T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  RSA782634  Eriogonum umbellatum Elizabeth A. Kempton, Tim Tibault 2006-7-29 418 Lassen Town of Chester. Vacant lot at intersection of Willow Way and Main Street 1388 Comment
  UCR248974  Eriogonum umbellatum Elizabeth A. Kempton, Tim Tibault 2006-7-29 418 Lassen town of Chester, vacant lot at intersection of Willow Way and Main Street 1388 Comment
  CAS-BOT-BC267887  Eriogonum umbellatum Clarence R. Quick 1962-8-3 62 -89 Lassen Delasmutt Ranch, Hw. 44, nr. Susanville-Old Station, along dirt road to Blacks Mt. E.F. Hdqtrs. 1615 Comment
  CHSC23499  Eriogonum umbellatum var. modocense Wayne O. Baum 1971-7-9 71 -81 Lassen N. slope of Gallatin Peak. 2072 Comment
  CHSC30618  Eriogonum umbellatum var. modocense Eric Miller 1975-7-8 7 Lassen N. E. slope of Gallatin Peak. 2011 Comment
  CHSC6227  Eriogonum umbellatum var. modocense A. Santos 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  UC412898  Eriogonum umbellatum var. modocense W. E. Bryant Aug. 1888 Lassen Eagle Lake Comment
  CAS-BOT-BC265091  Eriogonum umbellatum var. nevadense John Thomas Howell 1976-7-19 51951 Lassen Southwest of Susanville on Gold Run Road, Sierra Nevada 1341 Comment
  CAS-BOT-BC265093  Eriogonum umbellatum var. nevadense M. S. Taylor; B. Hammond 1982-8-27 5056 Lassen Crystal Peak, Diamond Mts., ca. 6 air mi SW of Doyle 2377 Comment
  CAS-BOT-BC265100  Eriogonum umbellatum var. nevadense A. A. Heller 1938-6-23 15215 Lassen Slope south of Ravendale on U.S. Highway #395 Comment
  JEPS107821  Eriogonum umbellatum var. nevadense Lowell Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  RSA715993  Eriogonum umbellatum var. nevadense L. Ahart, John Dittes 2005-6-2 11980 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  UC1032270  Eriogonum umbellatum var. nevadense H. P. Hagge 1929-9-11 22 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  HSC17448  Eriogonum ursinum H. E. Parks, S. T. Parks Jun 1928 229 Lassen Mt. Lassen N.P., Drakesbad 1982 Comment
  CAS-BOT-BC262359  Eriogonum vimineum Alice Eastwood; John Thomas Howell 1940-6-16 8343 Lassen Janesville Comment
  CAS-BOT-BC262362  Eriogonum vimineum John Thomas Howell 1934-6-10 11850 Lassen 4 miles south of Omira Comment
  JEPS117563  Eriogonum vimineum Lowell Ahart, John Dittes 2010-7-31 17018 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  JEPS56156  Eriogonum vimineum W. L. Jepson 1918-8-5 7816 Lassen Madelin Plains 1615 Comment
  JEPS56158  Eriogonum vimineum W. L. Jepson 1918-8-5 7817 Lassen Madelin Plains 1615 Comment
  RSA252387  Eriogonum vimineum Robert F. Thorne, C. W. Tilforth 1969-9-6 39260 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  UC1032292  Eriogonum vimineum H. S. Yates 1936-8-11 6070 Lassen Baxter Creek Susanville Quadrangle, Baxter Creek 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
  CAS-BOT-BC262355  Eriogonum vimineum David D. Keck 1930-7-23 951 Lassen Susanville 1280 Comment
  NY399577  Eriogonum vimineum H. D. D. Ripley 1943-6-15 5763 Lassen Northeast of Viewland 1341.1 Comment
  POM111648  Eriophorum gracile Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  CAS-BOT-BC300341  Eriophyllum Ella Dales Cantelow 1941-5-22 s.n. Lassen N. of Litchfield. U.S. Hy 395. Lava Country Comment
  SEINET10672051  Eriophyllum lanatum Jeffrey Huber 1971-6-2 Huber 139 Lassen 6 mi. N of Halleluja Jct. on U.S. Hwy. 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high rigdge and in sandy wash. 1402 Comment
  CAS-BOT-BC308134  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11889 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC308141  Eriophyllum lanatum var. achilleoides B. J. Hammerly 1941-6-21 43 Lassen 8 mi. SE of Likely on Blue Lake Road Comment
  UC725390  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen e slope of Freydonyer Pass (on State Highway #36); State Highway #36, Freydonyer Pass 1645 Comment
  CDA4968  Eriophyllum lanatum var. achilleoides T. C. Fuller 1963-6-1 10634 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  OBI75879  Eriophyllum lanatum var. croceum Anthony Baniaga 2011-6-29 402 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 NE of SW 1500 Comment
  CAS-BOT-BC301531  Eriophyllum lanatum var. integrifolium Louella Bass 1983-6-10 8 -83 Lassen Lassen College Campus, Susanville 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
  UC1130323  Erodium cicutarium A. Simontacchi 1940-6-8 832 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 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
  JEPS97782  Eryngium alismifolium Annetta M. Carter 1945-9-30 1716 Lassen W side of Eagle Lake. About 3 mi. S of Spaldings where road crosses bridge over dry creek. Comment
  POM83000  Eryngium alismifolium Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1508836  Eryngium alismifolium Gary Schoolcraft 1984-7-31 1329 Lassen ca. 1 mi. n. Ravendale Fire Station 1615 Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  JEPS79211  Erysimum repandum L. R. Heckard with R. C. Bacigalupi 1980-6-11 5247 Lassen 11.3 mi. n. Litchfield (along U.S. 395 s. of Deep Creek crossing, between R.R. & hwy.) 1463 Comment
  CHSC66266  Erythranthe breweri Vernon Oswald; Lowell Ahart 1996-6-24 7850 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CAS-BOT-BC153609  Erythranthe moniliformis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49410 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC5062  Erythranthe primuloides B. Anthony 1967-7-14 283 Lassen 5.3 mi from junction to highway 44 and rd to Silver Lake. 1798 Comment
  CHSC66268  Erythranthe pulsiferae Vernon H. Oswald; Lowell Ahart 1996-6-24 7865 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In open woods on the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  NY500075  Eschscholzia W. W. Eggleston 1911-5-29 6752 Lassen Vicinity of Doyle Station 1290 Comment
  NY499985  Eschscholzia californica B. J. Ertter 1987-7-24 7297 Lassen Ca. 3/4 mile east-northeast of Beckwourth Pass at end of old crumbling paved road 1524.0 Comment
  JEPS117958  Eucephalus breweri Zoya Akulova-Barlow Sep 2006 Lassen Sierra Nevada, Dyer Mountain Comment
  UCD114965  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres ranch, at end of Albaugh Road, 0.6 mile west of its junction with Bassett Road (ca. 2 miles south of U.S. Highway 299 and 4 miles southwest of Adin), northern part of county. 1280 Comment
  SEINET12143360  Euphorbia serpillifolia Unknown 1978-1 103 Lassen along dirt road near Miners Point, SE end of Eagle Lake 1585 Comment
  CHSC64874  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1995-6-19 6881 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  NY1001166  Euphorbia spathulata A. Tiehm 1984-6-7 8594 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1387 Comment
  UC1192257  Euthamia occidentalis Malcolm A. Nobs, S. Galen Smith 1949-8-20 1488 Lassen 1 mi s of Doyle; Long Creek Comment
  CHSC42184  Festuca idahoensis C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. 2194 Comment
  JEPS114855  Festuca idahoensis Lowell Ahart, John Dittes 2008-6-19 14880 Lassen about 100 yds E of Willow Creek, about 120 yds NE of Hwy 139, near Forest Road 36N02, about 19.6 mi E-SE of Bieber 1578 Comment
  POM203052  Festuca idahoensis J. T. Howell 1934-7-6 12448 Lassen Harvey Valley Comment
  UCD65977  Festuca idahoensis L. Whitney 1935-6-23 3295 Lassen Fruit Growers Supply Co. Camp #10. Comment
  SBBG128880  Festuca idahoensis L. Ahart, J. Dittes 2008-6-19 14880 Lassen open hillside, ca. 100 yards E of Willow Crk, ca. 120 yards NE of Hwy 139, near Forest Rd 36N02, ca. 19.6 mi ESE of Bieber 1578 Comment
  OBI75881  Festuca myuros Anthony Baniaga 2011-6-30 406 Lassen Lassen Natl Forest. E of 29N03. Fredonyer Pass quad. T29N R10E sec 24 NW of NE 1460 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
  UCD66364  Festuca rubra A. H. Shunk 1923-1 13 Lassen Hayden Hill. Comment
  JEPS120292  Frasera albicaulis var. modocensis Tim Kask 2013-5-29 211 Lassen On USFS Rd. 18 north of Highway 44 1/4 mi. Comment
  CHSC4503  Fremontodendron californicum subsp. californicum C. Glascock 1965-5-15 419 Lassen 12.4 mi. w of Mineral R. S. on Hwy. 36 at n roadside. Comment
  RSA304281  Fritillaria pudica James R. Shevock 1971-4-9 946 Lassen East of Dana, Highway 299 915 Comment
  RSA180586  Gaillardia aristata T. C. Fuller 1965-8-25 14036 Lassen East side of Hwy. 395 to Doyle, 2.4 miles north of Hallelujah Junction Comment
  JEPS25525  Galium aparine Rimo Bacigalupi with Lincoln Constance 1959-7-16 7137 Lassen US Hwy 395 one fourth mi s junction of road to Smokey Creek (playa beside road) 1341 Comment
  UC1523745  Galium bolanderi Gary Schoolcraft 1981-7-21 543 Lassen ne Pittville (along Hwy 299) 1249 Comment
  CHSC60406  Galium grayanum Mary Ann Showers 1992-6-28 2701 Lassen Lassen Volcanic National Park. Andesite cliffs west of Soda Lake and below tarn at base of north facing cirque between Pilot Pinnacle and Mt. Diller. 2438 Comment
  CHSC59813  Galium multiflorum Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In rocks on lower Balls Canyon wall. 1341 Comment
  OBI77063  Garrya fremontii Anthony Baniaga 2011-6-7 310 Lassen Lassen NF.. W of 34N60. Burney Mtn East quad. T34N r3E sec 35 SW of NE 1747 Comment
  POM355365  Gayophytum diffusum subsp. parviflorum Christopher Davidson 1975-6-7 2759 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UC1186544  Gayophytum diffusum subsp. parviflorum J. W. MacSwain 1959-8-12 59 -148 Lassen 2 mi n Bridge Camp; Hat Creek Comment
  CHSC105245  Gayophytum heterozygum Lowell Ahart; John Dittes 2010-7-31 17025 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
  CHSC25090  Gayophytum heterozygum K. R. Stern 1967-7-1 2442 Lassen Murrer Meadow Road, ca. 2.5 mi SE of Eagle Lake Biology Station. 1554 Comment
  UC1122567  Gayophytum heterozygum H. P. Hagge 1929-9-12 26 Lassen Logan Mtn. Eagle Lake Quadrangle Comment
  UC20253  Gayophytum heterozygum M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  SBBG126107  Gayophytum heterozygum L. Ahart, J. Dittes 2010-7-31 17025 Lassen ca 100 yards NE of where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1520 Comment
  CHSC27712  Gayophytum humile Robert A. Schlising 1978-7-1 3301 Lassen S of Eagle Lake; meadow bordering Mahogany Lake. 2060 Comment
  UC107796  Gayophytum racemosum T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UCD150409  Gayophytum racemosum Harry A. George 1967-6-15 s.n. Lassen Willow Creek Ranch. Comment
  CHSC6191  Gayophytum ramosissimum R. Gein 1946-6-12 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  UC1536822  Gayophytum ramosissimum Gordon H. True Jr. 1938-7-9 908 Lassen near Termo; Madeline Plains 1524 Comment
  UCD55160  Gayophytum ramosissimum Ellen Dean 2006-5-15 3048 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  POM253026  Gentiana newberryi A. A. Heller 1937-9-1 15341 Lassen About a mile east of Westwood. 1524 Comment
  UC803944  Gentiana newberryi G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 3998 Lassen nw of Susanville; Hog Flat 1676 Comment
  CHSC61048  Gentiana newberryi var. tiogana Vernon H. Oswald; Lowell Ahart 1993-8-3 5747 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. In the S part of the swamp. 1932 Comment
  CHSC58499  Gentianopsis simplex Vernon H. Oswald 1992-7-3 5052 Lassen Lassen Volcanic Park. Grassy Creek on the S shore of Snag Lake. Along drainage on the upper strand of the lake. 1851 Comment
  POM88686  Geranium pusillum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS94554  Geum triflorum Vernon Oswald and Lowell Ahart 1997-6-24 8649 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC1136907  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  UC773877  Geum triflorum L. R. Short, J. Warren 1936-6-23 S 423 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1764 Comment
  CHSC1549  Geum triflorum var. ciliatum 1944-7-5 Lassen Champ's Flat west of Eagle Lake. 1584 Comment
  RSA122289  Geum triflorum var. ciliatum K. e. Bradshaw 1939-5-27 25210 Lassen Near S end of Black Mtn EF Plot 39-4. 1738 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
  UC1093640  Gilia inconspicua Herbert L. Mason 1957-7-5 14716 Lassen town s Madeline (Madeline Plains); Madeline Plains (town s of Madeline) Comment
  CHSC11771  Gilia modocensis Wayne O. Baum 1971-6-28 71 -4 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC93696  Gilia modocensis Lowell Ahart; John Dittes 2005-6-2 11989 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  JEPS107831  Gilia modocensis Lowell Ahart, John Dittes 2005-6-2 11989 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  RSA104286  Gilia modocensis Verne Grant, Alva Grant 1956-5-17 9796 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  NY964018  Gilia salticola A. Tiehm 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert 1448 Comment
  RSA28121  Gilia salticola Elmer I. Applegate 1934-5-4 8914 Lassen South end of Secret Valley 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
  CHSC66283  Glyceria borealis Vernon H. Oswald; Lowell Ahart 1996-6-24 7872 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  CHSC77264  Glyceria elata G. Schoolcraft 1997-7-30 2614 Lassen W facing slope of Diamond Mtn. 1950 Comment
  CHSC64755  Glyptopleura marginata Vernon H. Oswald 1995-5-24 6782 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the east side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  CHSC117293  Gnaphalium palustre Lowell Ahart; John Dittes 2016-7-13 21108 Lassen Near where the drainage inters the pond, about 150 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS114877  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
  UC1483835  Gnaphalium palustre G. Schoolcraft 1980-7-22 Lassen nw of BLM fire station (along Hwy 395) 1630 Comment
  CHSC65359  Gratiola heterosepala Vernon H. Oswald; Lowell Ahart 1995-8-14 7200 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at a BLM reservoir 11.3 mi W of Hwy. 395, N of Susanville. 1737 Comment
  RSA772749  Gratiola heterosepala Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47210 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC110213  Grayia spinosa Peter H. Raven; Otto T. Solbrig 1958-6-17 13274 Lassen Along United States Highway 395, 19.0 miles south of Ravendale. Comment
  CDA23423  Grayia spinosa Robin Breckenridge 2007-5-1 PDR# 1349824 Lassen Wendel. 0 Comment
  CDA23424  Grayia spinosa S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  JEPS124631 Image available Grindelia nana Virginia Hardham 1965-7-13 132 Lassen Along roadside 1.4 mi past junction of As and 299. Comment
  UCD132463  Grindelia nana Dan Marcum 1978-7-3 s.n. Lassen exact location unknown. Comment
  CDA3425  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen North of the cemetery, Janesville. 0 Comment
  CDA34391  Gypsophila paniculata Anonymous 1987-6-17 Lassen Off US 395 near Janesville. 0 Comment
  CDA36783  Gypsophila paniculata D. B. Joley 1976-6-22 1 Lassen Janesville. 0 Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  UC1035983  Hackelia californica Helen K. Sharsmith 1955-6-27 4517 Lassen n of Hat Creek Ranger Station (forest adjacent to Highway 89); Lassen National Forest 1158 Comment
  UC1035997  Hackelia cusickii Helen K. Sharsmith 1955-6-22 4496 Lassen 5 mi beyond Blue Lake (on road to Likely); Warner Mountains, Modoc National Forest 1767 Comment
  JEPS67931  Hackelia micrantha Jos. Grinnell 1928-6-29 Lassen Butte Lake 1889 Comment
  UC1602195  Halogeton glomeratus Pryer and Fix 1948-8-17 Lassen Herlong Comment
  UC1553381  Helianthella californica subsp. nevadensis G. Schoolcraft 1988-7-11 1822 Lassen about 1 mi s Hwy. 44 (on road to Goumaz) 1645 Comment
  CAS-BOT-BC314764  Helianthella californica var. nevadensis A. M. Vollmer; L. Beane 1953-7-1 37 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC314766  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  CHSC43613  Helianthus annuus Vernon Oswald 1986-8-7 2274 Lassen Hwy 36, 15.7 mi e of the Lassen-Plumas County line, 1.7 mi sw of the Susan River. Roadside. 1447 Comment
  CHSC7636  Helianthus cusickii Beverley J. Wise 1969-5-15 22 Lassen 28.9 mi. East of Susanville on Hwy 395. 1554 Comment
  UC727121  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen along Hwy 395 on ridge n Mapes Comment
  CHSC91196  Hemizonella minima Lowell Ahart; John Dittes 2005-6-2 11940 Lassen Along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  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
  CHSC68750  Hesperochiron californicus Vernon H. Oswald; Lowell Ahart 1997-5-27 8525 Lassen Coyote Flat on Forest Route 38N04 4.7 mi northeast of Hwy. 139. 1798 Comment
  RSA122623  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley. Lassen Forest. 1707 Comment
  CHSC61155  Hesperochiron pumilus Vernon H. Oswald; Lowell Ahart 1993-5-12 5382 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 ( to Westwood) and Poison Lake, on the edge of a large meadowy opening covered with sagebrush scrub along Pine Creek. 1737 Comment
  SEINET5499822  Hesperochiron pumilus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  POM87380  Hesperolinon micranthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1924195  Hesperolinon micranthum Debra Valov 2005-8-20 2005235 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC867806  Hesperolinon micranthum C. L. Hitchcock 1940-5-26 6618 Lassen ca 12 mi n Fall River Mills (Shasta Co.); Fall River 1371 Comment
  CAS-BOT-BC280680  Hesperostipa comata John Thomas Howell 1934-6-10 11841 Lassen Near Plumas Junction Comment
  UC593455  Hesperostipa comata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1743 Lassen e-facing slope of gully on mountain above Red Rock 1420 Comment
  UC1069609  Hieracium albiflorum A. Simontacchi 1940-7-2 889 Lassen 6.2 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1136852  Hieracium albiflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 269 Lassen Lassen <National> Forest 1737 Comment
  UC1136853  Hieracium albiflorum L. R. Short and Wm. Gansberg 1936-7-3 S 411 Lassen Burgess Spr. Exp. Range Lassen National Forest 1847 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
  CAS-BOT-BC318711  Hieracium horridum Lemmon 1874-9-1 s.n. Lassen Shasta Comment
  HSC103617  Hieracium horridum Thomas W. Nelson, Jane Nelson 1985-8-10 8020 Lassen Along west side of Silver Lake. 1829 Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  CHSC65312  Hippuris vulgaris Vernon H. Oswald 1995-8-21 7211 Lassen Warner Mts. Blue Lake located ca. 13 mi SE of Likely. Localized colony growing in shallow water of a large, marshy area at the SW corner of the lake. 1859 Comment
  UCR7790  Holcus lanatus Marilyn Malin 1968-7-11 261 Lassen West side of Hwy 395 on west side of Honey Lake 1280 Comment
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Sep 19 2013
  CHSC6255  Holodiscus microphyllus var. glabrescens M. West 1946-7-7 Lassen Cone Lake near east border of Lassen Nat. Park. 1828 Comment
  POM91032  Holodiscus microphyllus var. glabrescens Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  JEPS87501  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  RSA755003  Holosteum umbellatum subsp. umbellatum L. Ahart, John Dittes 2008-6-20 14922 Lassen About 10-100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber. 1264 Comment
  UC1609207  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald and Lowell Ahart 1993-5-12 5390 Lassen Butte Lake Rd. 1.4 mi s Hwy 44 (between Old Station and Poison Lake); Butte Lake Rd., between Old Station and Poison Lake 1652 Comment
  UC1100324  Hordeum brachyantherum subsp. brachyantherum Malcolm A. Nobs, S. Galen Smith 1949-7-21 1055 Lassen 4 mi N of Madelaine Comment
  CHSC65367  Hordeum jubatum Vernon H. Oswald; Lowell Ahart 1995-8-14 7189 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Roadside pond. 1645 Comment
  HSC10190  Hordeum jubatum M. T. Milligan 1964-8-6 200 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC1924567  Hordeum murinum subsp. glaucum Debra Valov 2006-5-28 2006039 Lassen Bieber off County Rd. A2 c. 12 km east of Hwy 299 1279 Comment
  JEPS114764  Hordeum murinum subsp. leporinum Lowell Ahart, John Dittes 2008-6-20 14915 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC157367  Horkelia fusca Clare B. Hardham 1961-6-17 7503 Lassen Baxter Creek south of Susanville 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
  NY170061  Hutchinsia procumbens N. H. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1680 Comment
  RSA122624  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen MDM, Burgess Spr. Exp. Range. 1753 Comment
  CHSC118790  Hymenoxys cooperi L. P. Janeway; B. Castro 2015-6-5 11756 Lassen Great basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  CAS-BOT-BC312843  Hymenoxys lemmonii J. E. Stuart 1930-6-1 s.n. Lassen Eight miles south of Constantia on the Reno Road Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  UC124657  Hypericum anagalloides T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  SEINET10472162  Hypericum formosum subsp. scouleri Mary Susan Taylor 1974-1 Taylor 283 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC41841  Hypericum formosum var. scouleri P. V. Caldwell 1972-7-13 271 Lassen Eagle Lake. Growing scattered on edge of upper Papoose Creek above forest road to Papoose Meadows. Comment
  JEPS66829  Hypericum formosum var. scouleri Brown and Wieslander 1922-7-30 28 Lassen Eagle Lake, Martin Springs Comment
  UC420712  Hypericum formosum var. scouleri Franklin P. Nutting 1894-7-25 Lassen Willow Creek northern CA Comment
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Jul 3 2013
  UC124652  Hypericum formosum var. scouleri W. E. Bryant Lassen Comment
  SEINET5344266  Hypericum scouleri C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CAS-BOT-BC88621  Idahoa scapigera Doris Kildale Gillespie 1930-5-12 9338 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CHSC7707  Idahoa scapigera Beverley J. Wise 1969-4-10 37 Lassen 1.5 mi. north on Hwy 139. 1341 Comment
  NY52522  Iliamna bakeri G. Schoolcraft 1984-8-27 1371 Lassen Eastern slopes of Little Hat Mtn. 1981.2 Comment
  UCD126378  Iliamna bakeri Richard R. Halse 2004-7-8 6615 Lassen Along State Highway 139, around 6 miles north of Eagle Lake. 1710 Comment
  JEPS808  Ipomopsis aggregata Brown and Wieslander 1922-6-19 1 Lassen Martin Springs Eagle Lake Comment
  HSC69077  Ipomopsis aggregata Gary Schoolcraft 1979-7-12 145 Lassen NW side of Shinu Peaks 2134 Comment
  CHSC1230  Ipomopsis aggregata subsp. formosissima K. Chew 1954-7-7 Lassen NW end of Eagle Lake. 1615 Comment
  CHSC6203  Ipomopsis aggregata subsp. formosissima P. Balch 1955-7-17 Lassen Eagle Lake. Mouth of Papoose Creek, near Gallatin Beach. 1561 Comment
  CHSC68895  Ipomopsis congesta subsp. montana Vernon Oswald; Lowell Ahart 1997-6-24 8637 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
  CHSC107328  Iris hartwegii subsp. hartwegii Lowell Ahart; John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley. 1264 Comment
  CAS-BOT-BC61857  Isoetes nuttallii Alice Eastwood; John Thomas Howell 1940-6-11 7984 Lassen Big Valley Mts. Comment
  CHSC111241  Iva axillaris B. Castro; L. P. Janeway 2012-7-3 1939 Lassen Modoc Plateau. Honey Lake Valley, NE side of Honey Lake; 2.9 air mi NW of Wendel. 2 road mi SE of Hwy 395, 0.35 mi S of Wendel Road on road into Fish and Game Wildlife Area [Honey Lake State WL Area, Fleming Unit]. 1219 Comment
  CAS-BOT-BC148542  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  SEINET3860195  Ivesia paniculata Thomas W. Nelson, Jane P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 mi E of Adin.; 0 1554 Comment
  CHSC5267  Juncus balticus 1944-6-26 Lassen Eagle Lake. 1584 Comment
  UC1542936  Juncus balticus G. Schoolcraft 1987-5-18 1701 Lassen 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UCR244138  Juncus balticus Jim Andre, G. L. Clifton 1993-6-9 19700 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UCD141340  Juncus balticus subsp. ater Herbert L. Mason; Verne Grant 1947-7-9 13297 Lassen 5 miles east of Bieber. Comment
  CHSC117204  Juncus bufonius var. occidentalis Lowell Ahart; John Dittes 2016-6-7 20988 Lassen West edge of pond, 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC66275  Juncus bufonius var. occidentalis Vernon H. Oswald; Lowell Ahart 1996-6-24 7838 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. On the W side of the meadow just S of the cabins. 1633 Comment
  POM261438  Juncus bufonius var. occidentalis Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville. 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
  SEINET10533379  Juncus mexicanus Douglas G. LeDoux, David B. Dunn 1975-5-25 LeDoux 791 Lassen Collected 3 miles n of milford on hwy. 395 At honey lake campgrounds Comment
  CDA33205  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  UC1553383  Juncus nevadensis G. Schoolcraft 1988-8-10 1849 Lassen 10 mi ne Susanville (along Hwy 139) 1505 Comment
  RSA647524  Juncus nevadensis Marion P. Harthill 1974-6-14 1518 Lassen Madeline. 152 Comment
  JEPS117620  Juncus tenuis Lowell Ahart, John Dittes 2010-7-31 17026 Lassen About 20 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
  UC1133742  Juncus tenuis Robert W. Gardner 1939-6-28 G- 33 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1706 Comment
  UC773861  Juncus tenuis L. R. Short and J. Warren 1936-6-10 S- 418 Lassen Burgess Spring Experiment Range. Comment
  CHSC92739  Juncus trilocularis L. P. Janeway 2005-7-3 8456 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
  HSC101239  Juncus trilocularis Peter Zika 2008-7-14 23893 Lassen South side of Route 44, SE end of Grays Valley near Lodgepole 1730 Comment
  RSA699964  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  SD243239  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen Cascade Range Highlands: S side of Route 44, SE end of Grays Valley near Lodgepole. 1730 Comment
  CHSC23332  Juniperus occidentalis Mark Stopher 1976-1-11 28 Lassen Collected 5 miles north on Eagle Lake turnoff, 3 miles west of Susanville on highway 36. 1463 Comment
  JEPS126564  Juniperus occidentalis Lowell Ahart, John Dittes 2016-6-7 20974 Lassen About 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UCR4289  Juniperus occidentalis var. occidentalis Frank C. Vasek 1965-8-31 650831- 05 Lassen c. 45 mi north of Susanville 1662 Comment
  UCR3789  Juniperus osteosperma Frank C. Vasek 1964-9-12 640912- 07 Lassen 5.2-5.4 mi north of the junction of US Hwy 395 w/ Calif. Hwy 70 (alt. US Hwy 40) 1479 Comment
  CHSC60920  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5657 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  JEPS12481  Kelloggia galioides Brown and Wieslander 1922-7-18 53 Lassen near Susanville (Martins Springs); Martins Springs Comment
  JEPS97318  Kochia scoparia Vernon H. Oswald and L. Ahart 1995-8-14 7172 Lassen T30N R15E center N side Sec. 15, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  CAS-BOT-BC180803  Kochia scoparia Louella Bass 1981-7-21 s.n. Lassen Standish Comment
  UC1132160  Koeleria macrantha A. Simontacchi 1940-7-8 945 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD86006  Koeleria macrantha L. Whitney 1933-7-9 s.n. Lassen Halls flat. 1737 Comment
  CAS-BOT-BC271331  Koeleria pyramidata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UC7389  Krascheninnikovia lanata J. Burtt Davy Jun 17 1897-Jun 24 1897 3327 Lassen Honey Lake Valley 1219 Comment
  CHSC59133  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1992-8-25 5195 Lassen Lassen Volcanic National Park. Slope at the SE corner of Snag Lake. 1853 Comment
  UC2027323  Kyhosia bolanderi Anthony Baniaga 2011-8-16 499 Lassen Lassen National Forest. Along F.S. 10, ca. 1 mi NE of Cummings Spring. Red Cinder quadrangle Comment
  CHSC113011  Lactuca serriola Lowell Ahart; John Dittes 2013-7-23 18887 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC5067  Lactuca serriola L. Stites 1967-7-4 122 Lassen Collects at Eagle Lake Biology Station. 1371 Comment
  UCD133500  Lactuca tatarica subsp. pulchella W. L. Jepson 1918-8-2 s.n. Lassen lower bench of Long Valley Creek. Beckwith Pass. 1463 Comment
  CAS-BOT-BC341483  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CAS-BOT-BC341481  Lagophylla ramosissima Barrett Anderson 1986-7-9 3122 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  CHSC71865  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1998-9-8 9575 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  CDA20356  Lappula redowskii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CHSC112414  Lasthenia glaberrima Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18739 Lassen Near a drainage filled with dirt from construction of a pond, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS89760  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout 0.5 mi s of the Modoc County Line (Big Valley, Pit River Watershed); Big Valley, Pit River Watershed 1249 Comment
  RSA0035916  Lasthenia glaberrima Lowell A. Ahart, John Dittes 2008-6-20 14901 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
  POM29621  Lathyrus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  UC1137764  Lathyrus brownii August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  POM253248  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15147 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CAS-BOT-BC321493  Layia glandulosa Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9506 Lassen Observation Peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 1890 Comment
  UC1609230  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1993-6-14 5535 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), dunes on n side of rd); Eagle Lake 1566 Comment
  UC468843  Layia glandulosa Franklin P. Nutting Lassen Dixey Valley Comment
  CHSC99242  Lemna minuta Lowell Ahart; John Dittes 2008-6-22 15022 Lassen On shallow water, south side of the levee, about 50 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  HSC95338  Lemna minuta Gordon Leppig, J. Cromwell 1997-7-27 621 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  UC2046024  Lemna trisulca Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11166 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA42959  Lepidium chalepense L. Ahart, John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. Comment
  UCD55157  Lepidium dictyotum Ellen Dean 2006-5-15 3045 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  UCD115696  Lepidium latifolium T. C. Fuller 1962-8-28 9478 Lassen 75 sq. ft. infestation on east side of road, Hwy 395 to Litchfield, 4.7 miles south of Ravendale, Madelaine Plains. Comment
  CHSC36487  Lepidium perfoliatum Margaret E. Halloran 1982-6-2 1 Lassen Ca. 2 mi e jct of Hwy 139 and Ravendale Rd. Comment
  CHSC36502  Lepidium perfoliatum Theresa Costa 1982-6-2 23 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd, ca. 10 yd e Ravendale Rd. Comment
  CHSC4915  Lepidium perfoliatum A. E. Anderson 1967-7-1 69 Lassen North side of road 0.5 mi. e of Murrer Ranch buildings. 1371 Comment
  CHSC525  Lepidium perfoliatum J. Wakeman 1963-5-11 Lassen 1 mi. north of Honey Lake. Near Hot Springs. Comment
  CHSC64873  Lepidium perfoliatum Vernon H. Oswald; Lowell Ahart 1995-6-19 6899 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. Near the road. 1383 Comment
  CHSC91205  Lepidium perfoliatum Lowell Ahart; John Dittes 2005-6-2 11920 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
  HSC63973  Lepidium perfoliatum J. P. Smith, J. O. Sawyer 1971-5-23 4665 Lassen Junction of Hwy. 139 and road to Thermo 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
  UCD115855  Lepidium perfoliatum Grady L. Webster 1989-5-13 7713 Lassen 2.5 mi E of Beckworth Pass. 1493 Comment
  RSA152592  Lepidium perfoliatum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16332 Lassen 13.5 mi. E of Susanville. Comment
  SEINET10448290  Lepidium perfoliatum Mary Susan Taylor 1974-7-8 Taylor 259 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  CAS-BOT-BC12987  Lepidium virginicum John Thomas Howell 1974-7-10 50531 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  JEPS53770  Lepidium virginicum var. virginicum W. L. Jepson 1918-8-2 7763 Lassen Beckwith Pass 1463 Comment
  UCD63835  Leptochloa fusca subsp. fascicularis Chandler Jensen 1959-9-8 Lassen Honey Lake Valley near Standish. Comment
  UC506992  Leptodactylon pungens George A. Fischer and Irwin H. Johnson 1933-7-12 F 202 Lassen Grass Valley; Lassen Forest, Grass Valley 1700 Comment
  CHSC25901  Leptosiphon harknessii K. R. Stern 1967-6-24 2427 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  POM364710  Leptosiphon harknessii J. T. Howell 1934-6-10 11844 Lassen Near Plumas Junction Comment
  CHSC101047  Leucocrinum montanum John Dittes 2008-5-22 1524 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
  UC1553405  Leucocrinum montanum Gary Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  POM71468  Leucophysalis nana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  HSC75895  Lewisia nevadensis D. H. Norris, S. Dowty, Thomas W. Nelson 1971-6-22 19194 Lassen Harvey Valley near Cone Springs Comment
  RSA59892  Lewisia nevadensis E. K. Balls 1950-5-19 14773 Lassen above Ash Creek Public Camp, off road from Adin to Madeline. 1646 Comment
  CHSC36446  Lewisia rediviva Jeffrey R. Peek 1982-6-1 23 Lassen Ca 2 mi e of Horse Lake. Comment
  CHSC36501  Lewisia rediviva Theresa Costa 1982-6-2 25 Lassen Along Ravendale Rd ca. 2 mi e of Horse Lake. Comment
  UC803892  Leymus G. L. Stebbins Jr. 1949-8-6 4007 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  CDA7155  Leymus cinereus G. Schoolcraft 1993-9-18 s.n. Lassen 1 mile N of Sagehen on W side of Hwy 395. Comment
  JEPS87470  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  RSA152594  Leymus cinereus I. L. Wiggins, Dorothy Wiggins 1961-6-11 16336 Lassen On hillside 13.5 mi. of Susanville Comment
  UC1037094  Leymus cinereus Leo Whitney 1933-7-16 2207 Lassen ca 16 mi w upper end of Eagle Lake; Lassen National Forest, Harvey Mountain Comment
  UC584329  Leymus cinereus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2227 Lassen 6 mi s Ravendale 1660 Comment
  UCD64268  Leymus cinereus L. D. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Camp #10. Comment
  SEINET239973 Image available Leymus triticoides G. L. Clifton 1996-6-5 34630 Lassen East of Herlong close to the railroad. 1230 Comment
  UC1037091  Leymus triticoides Leo Whitney 1933-7-5 2215 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  POM119423  Lilaea scilloides Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC112419  Limosella acaulis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18753 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
  UC1609110  Limosella acaulis Vernon H. Oswald and Lowell Ahart 1993-6-14 5508 Lassen Lassen A21 (32N02) 5.3 mi e of Lassen 105 (32N28Y) ca 7 mi (air) w Eagle Lake (near Summit Camp); w of Eagle Lake 1889 Comment
  SEINET9337712  Limosella acaulis Robert Thorne, DeBuhr, Larry 1975-8-22 47206 Lassen Hwy 395 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
  RSA252393  Limosella aquatica Robert F. Thorne, C. W. Tilforth 1969-9-5 39137 Lassen Said Valley Reservoir. Comment
  UCR208968  Linanthus ciliatus Lowell Ahart 2005-6-2 11936 Lassen about 1.5 miles NE of the Anderson Ranch home, Long Valley, c. 6 miles (air) north of the intersection of Scott Road and Hwy 70, 7.5 miles (air) northwest of Halleluja Junction 1601 Comment
  UC1025087  Linanthus harknessii Leo Whitney 1934-7-5 1788 Lassen ca 15 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Crater Mountain 2225 Comment
  CHSC6204  Linanthus pungens 1944-7-9 Lassen Eagle Lake. Dow Butte. 2042 Comment
  CDA6343  Linaria genistifolia subsp. dalmatica T. C. Fuller 1963-7-15 10893 Lassen Road to Pittville, 4.3 miles northwest of Little Valley. 0 Comment
  CHSC106064  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC36448  Linum lewisii var. lewisii Susan H. Euing 1982-6-3 2 Lassen Ca. 0.8 mi s jct forest service roads 5.16 and 5.17 heading towards 5-Corners. Comment
  CHSC61430  Linum lewisii var. lewisii Vernon H. Oswald; Lowell Ahart 1993-8-18 5832 Lassen Lassen Volcanic National Park. Summit ridge of Mt. Conard, near the S boundary of the park. Common in loose rock approaching the highest point on the ridge from the north. 2484 Comment
  CAS-BOT-BC435427  Lithophragma glabrum John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 1524 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
  UC1609478  Lithophragma tenellum Vernon H. Oswald and Lowell Ahart 1993-6-3 5478 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02), 3.7 mi n Hwy 44 at spur rd 32N02E (between Poison Lake and Susanville, se side of Pine Creek Valley); Pine Creek Valley, btw Poison Lake and Susanville 1731 Comment
  UC496334  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen between Susanville and Janesville Comment
  POM92082  Lithophragma tenellum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  SEINET208827  Loasaceae Jack Major 1966-6-24 Lassen Above Blue Lake, Warner Mountaind, northeastern Lassen County (ca. 18 miles airline southeast of Likely), California. 1905 Comment
  CHSC7743  Lomatium Beverly J. Wise 1969-5-3 113 Lassen 7.3 mi. east on Las. Ca. Rd.338, past junction with Hwy 395. 1645 Comment
  CHSC60806  Lomatium bicolor var. leptocarpum Vernon H. Oswald; Lowell Ahart 1993-6-28 5620 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  UC21192  Lomatium bicolor var. leptocarpum M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UC604536  Lomatium bicolor var. leptocarpum C. W. Sharsmith 1938-7-18 3633 Lassen 2 mi. s. Madeline (Madeline Plains); Madeline Plains Comment
  UCR183199  Lomatium macrocarpum Jim Andre, G. L. Clifton 1993-6-2 7717 Lassen Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns 1243 Comment
  CHSC7744  Lomatium nevadense Beverley J. Wise 1969-4-13 116 Lassen 5.6 mi. east on Las. Co. Rd. 338 past the junction with Hwy 395. 1554 Comment
  RSA0049670  Lomatium nevadense var. nevadense Dean Wm. Taylor 2012-5-15 21196 Lassen Windmill Flat vicinity; one mile north of the north end (watershed East Fork Juniper Creek, tributary to Pit River at Big Valley) 1676 Comment
  UC1561383  Lomatium nevadense var. nevadense Barbara Ertter with Gary Schoolcraft 1987-6-16 7185 Lassen ridge w. Hot Springs VABM (Skeedaddle Mts., on n.e. side of Honey Lake); Skeedaddle Mts., Honey Lake 2133 Comment
  SEINET5333506  Lomatium nevadense var. nevadense D. H. French 1968-6-3 2883 Lassen Near Hwy, 395, 1.1 mi S of Ravendale, just behind gas station-cafe-bar building. Comment
  UC1123085  Lomatium nevadense var. parishii A. Simontacchi 1940-5-27 768 A Lassen 9.3 mi NW of Crater Lake 1752 Comment
  CHSC42627  Lomatium nudicaule Vernon Oswald 1986-5-28 2047 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  RSA125874  Lomatium nudicaule P. H. Raven, Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 miles east of Westwood on Hwy 36 Comment
  UC1167732  Lomatium nudicaule Peter H. Raven with Otto T. Solbrig 1958-6-16 13250 Lassen 4.5 mi. e. Westwood (on State Hwy. 36) 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
  JEPS103161  Lomatium plummerae G. Schoolcraft 1996-5-13 2519 Lassen Ft. Sage OHV area 3 mi. NE of Doyle 1402 Comment
  CAS-BOT-BC217797  Lomatium ravenii Lincoln Constance; E. DiFulvio 1962-4-16 3747 Lassen 1 mile S of Ravendale 1615 Comment
  HSC69063  Lomatium ravenii Gary Schoolcraft 212 Lassen N of Shaffer Mountain 1357 Comment
  LA35567  Lomatium ravenii Lincoln Constance; Rimo Bacigalupi 1959-6-14 3672 ISOTYPE Lassen 1 mi. S of Ravendale 1462 Comment
  RSA0049612  Lomatium ravenii Dean Wm. Taylor 2012-6-7 21233 Lassen 1 mile south of Ravendale (along Highway 395, 100 meters East of the highway ROW) 1615 Comment
  UC1187686 Image available Lomatium ravenii Tracey and Viola Call 1961-5-30 2048 Lassen ca. 2 mi. s. Ravendale 1463 Comment
  UC1924598  Lomatium triternatum Debra Valov 2006-5-28 2006008 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1305 Comment
  CHSC42629  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2059 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  RSA0049637  Lomatium triternatum var. triternatum Dean Wm. Taylor 2012-6-19 21245 Lassen Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin) 1706 Comment
  JEPS127567  Lomatium vaginatum L. P. Janeway, B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. Buckhorn Lake 7.5' Quad, Comment
  RSA0049611  Lomatium vaginatum Dean Wm. Taylor 2012-6-7 21232 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  RSA0049622  Lomatium vaginatum Dean Wm. Taylor 2012-5-17 21207 Lassen Highway 395 about 0.5 miles S of the Modoc County line, east side of the highway between the roadway and the fenceline (3 miles S of Likely) Comment
  UC21281  Lomatium vaginatum Mrs. C. C. Bruce June 1898 2286 Lassen <Madaline> Plains Comment
  SEINET9672826  Lomatium vaginatum G. Schoolcraft 1979-5-1 13 Lassen East of Post Camp 1707 Comment
  CAS-BOT-BC200923  Lotus John Thomas Howell 1976-7-19 51953 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  CHSC60829  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5608 Lassen N of Hwy 44 of Harvey Rd. One (34N27) 1.5 mi NE of Aspen Well, N of Harvey Valley, NE of Poison Lake. 1761 Comment
  JEPS126486  Lotus corniculatus Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-16 CA 350 -050 Lassen Take Smoke Creek Road to Sand Pass Road. Turn left at Parker Reservoir. Comment
  UC1609455  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5608 Lassen 1.5 mi ne Aspen Well (n of Hwy 44 on Harvey Rd One (34N27), ne of Harvey Valley, ne of Poison Lake) 1761 Comment
  POM28313  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS114702  Lotus denticulatus Lowell Ahart, John Dittes 2008-6-20 14970 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
  CDA27197  Lotus denticulatus T. C. Fuller 1963-6-1 10621 Lassen West side of road to Susanville, 2.0 miles south of Pittville. 0 Comment
  UC1129240  Lotus purshianus var. purshianus A. Simontacchi 1940-6-30 903 Lassen 2.6 mi w Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  UC773895  Lotus purshianus var. purshianus L. R. Short and J. Warren 1936-6-23 S- 447 Lassen Burgess Spring Experiment Range Lassen Forest Comment
  RSA622143  Lupinus B. J. Cox, Paul Gallian 1971-6-2 2590 Lassen Approx. 6 mi. S. of Susanville at Jct. of U.S. Hwy 395 and Calif. Hwy 36 to Susanville, near Johnstonville. 1311 Comment
  UC126936  Lupinus angustiflorus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Leke Silver Lake Comment
  CHSC905  Lupinus arbustus R. Gein 1946-6-20 Lassen Mt. Fredonyer. 2133 Comment
  SEINET12765226  Lupinus arbustus Vernon H. Oswald 1997-6-24 8635 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. about midway between Aspen Flat and Red Rock Lookout.; 0 2249 Comment
  HSC63936  Lupinus arbustus subsp. calcaratus Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak near summit 2393 Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  NY732864  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1985-6-12 1417 Lassen 1/2 mile south of Cleghorn Flat 1890 Comment
  POM252845  Lupinus arbustus subsp. silvicola A. A. Heller 1938-6-4 15142 Lassen In open places near Fredonyer Pass. 1707 Comment
  SEINET10841274  Lupinus arbustus subsp. silvicola Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2577 Lassen 6 miles s of adin; along cal hwy 139 right-of-way; in basalt-clay, grassy road Bank; artemisia juniper assoc 1372 Comment
  UC1542916  Lupinus argenteus G. Schoolcraft 1987-9-1 1773 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC208731  Lupinus argenteus var. heteranthus M. S. Taylor 1982-6-12 4653 Lassen Doyle, ca. 0.5 mi E of Hwy 395 Comment
  CAS-BOT-BC208733  Lupinus argenteus var. heteranthus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 mi. from junction of Hwy. 36 and 395. 1249 Comment
  CAS-BOT-BC208744  Lupinus argenteus var. heteranthus A. A. Heller 1938-6-23 15203 Lassen Just outside of Johnstonville on U.S. Highway #395. 1280 Comment
  CAS-BOT-BC208746  Lupinus argenteus var. heteranthus John Thomas Howell 1934-7-10 12560 Lassen Black's Mt. Comment
  CAS-BOT-BC208758  Lupinus argenteus var. heteranthus J. H. Christ 1949-5-22 18218 Lassen 8 miles southeast of doyle, along Hwy 395 Comment
  CHSC106069  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2010-7-31 16977 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  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
  UC83091  Lupinus argenteus var. heteranthus T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  UC1184055  Lupinus breweri Jean Langenheim 1957-6-26 4401 Lassen nw Said Valley (northeastern part of Lassen County); nw Said Valley Comment
  RSA687493  Lupinus caudatus M. Bourell 1997-5-31 5879 Lassen Wendel Road 10.9 miles southeast of Highway 395. Comment
  SEINET3145129  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 mi S of Doyle 1372 Comment
  UCR18734  Lupinus caudatus Frank C. Vasek 1975-7-11 750711- 15 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  SEINET12161686  Lupinus caudatus N. E. Heiken 1978-1 57 Lassen SE of Eagle L. T31N R11E Sec22 1554 Comment
  RSA0029190  Lupinus confertus John F. Emmel 1997-6-8 1490 Lassen At Hwy. 395 crossing of Secret Creek, on hill and slope 0.2-0.3 air mi WSW of the crossing, 2.7 road mi north of Karlo Road junction. 1448 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
  NY747209  Lupinus lepidus var. confertus G. Schoolcraft 1983-6-29 1039 Lassen Coulthurst Flat 1890 Comment
  SEINET5332986  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy 395, ca. 7.8 miles southeast of Susanville. 1293 Comment
  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
  UC126929  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 Comment
  NY747375  Lupinus leucophyllus var. leucophyllus H. D. D. Ripley 1943-6-13 5679 Lassen Milford 1265 Comment
  UC199306  Lupinus microcarpus var. microcarpus Franklin P. Nutting Lassen Dixey Mts. South side Comment
  SBBG67020  Lupinus obtusilobus S. W. Hutchinson -Jun-1925 525 Lassen Eagle Lake 1554 Comment
  SEINET10450722  Lupinus obtusilobus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in Lassen Volcanic National Park near the peak. In dry ground. Comment
  RSA18697  Lupinus onustus Marcus E. Jones 1887-06 s.n. Lassen Susanville Comment
  CHSC7671  Lupinus polycarpus Beverley J. Wise 1969-5-4 62 Lassen 0.5 mi west on Shaeffer Mtn lookout access road from junction with Hwy 395. 24.4 mi E. of Susanv. 1615 Comment
  NY747611  Lupinus polyphyllus var. saxosus H. D. D. Ripley 1944-5-30 5982 Lassen 2 miles south of Madeline 1707 Comment
  SEINET10486220  Lupinus saxosus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2593 Lassen Approx. 12 Mi s of adin on state hwy. 139. In basalt and clay; along edge of Road on rolling knoll, in artemisia-juniper association. 1372 Comment
  SEINET10488913  Lupinus sellulus Katherine L. Morris 1973-5-25 Morris 220 Lassen Collected at 3.5 mi w of susanville, on u.s. 36, In an area of yellow pine and Purshia. Comment
  SEINET10490263  Lupinus subvexus var. transmontanus David B. Dunn 1956-7-3 Dunn 11925 Lassen Collected on roadside among volcanic rocks. Along hwy 395, 5.5 mi s of likely, Before dropping into valley. Color lavender. Sagebrush common. Comment
  SEINET7949966  Lycopus asper T. L. Breene, H. Sampson 1937-1 56 Lassen Honey Lake Valley. Comment
  CHSC65313  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the edges of the lake and on floating bogs. 1859 Comment
  HSC95307  Lycopus uniflorus Gordon Leppig, J. Cromwell 1997-7-27 625 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  HSC95311  Lycopus uniflorus Gordon Leppig 1998-8-17 1051 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SEINET3155222  Machaerocarpus californicus M. E. Jones 1897-6-24 sn Lassen 10 to 15 miles west from Amedee 1219 Comment
  POM253193  Madia bolanderi A. A. Heller 1937-9-1 15342 Lassen Wet ground in a Tamrack swamp about 1 mile E of Westwood. 1524 Comment
  CAS-BOT-BC342656  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  CAS-BOT-BC343697  Madia elegans John Thomas Howell 1974-7-10 50556 Lassen Elysian Valley 1325 Comment
  UCD134243  Madia elegans J. E. Stuart 1929-8-1 2035 Lassen Roy Hardwood Ranch, Milford. Comment
  POM29905  Madia elegans subsp. elegans Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  JEPS89656  Madia exigua Dean Wm. Taylor with Robert A. Price 1988-6-4 9769 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek, Fall R. Valley); Pit R. Watershed, Fall R. Valley 1036 Comment
  UC89366  Madia exigua T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  UC905684  Madia glomerata David D. Keck 1930-7-23 955 Lassen 15 mi w Susanville; Sierra Nevada 1525 Comment
  CAS-BOT-BC512878  Maianthemum stellatum Louella Bass 1973-6-17 120 Lassen Elysian Valley 1325 Comment
  SJSU10452  Maianthemum stellatum H. L. Buckalew 1961-7-9 Lassen spring near Blue Lake, Warner Mts 1828 Comment
  CAS-BOT-BC347439  Malacothrix floccifera Louella Bass 1974-7-1 EV 153 Lassen Elysian Valley 1325 Comment
  CHSC80607  Malacothrix glabrata V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10038 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  CAS-BOT-BC348029  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi. n. Wendel Rd. along Skedaddle Ranch Rd. Comment
  CHSC4978  Malva neglecta R. Clicquennoi 1967-6-23 11 Lassen In a large vernal pool area 1/4 mi n of Eagle Lake Biology Station, e central side of Eagle Lake. 1554 Comment
  JEPS124804 Image available Malva neglecta Peter Schultz 1967-7-2 172 Lassen 1 mile south of Milford city limit. Highway 395. Comment
  RSA312311  Malvella leprosa Verne Grant, Irving Schneider 1947-9-6 8386 Lassen Hot springs about one mile west of Wendel. Comment
  CAS-BOT-BC71144  Marsilea Clarence R. Quick 1962-6-17 62 -26 Lassen Swains Hole, south of Blacks Mountain Experimental station 1554 Comment
  UC62421  Marsilea oligospora Baker and Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  JEPS93831  Matricaria discoidea Vernon H. Oswald and Lowell Ahart 1998-6-4 9138 Lassen Red Rock Road at its junction with Highway 395 s of Constantia; Red Rock Road 1365 Comment
  CHSC29877  Matricaria occidentalis Robin L. Ondricek 1978-8-26 127 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  CAS-BOT-BC348267  Matricaria occidentalis M. S. Taylor 1982-6-12 4651 Lassen In Hartson Lake Refuge, ca. 1 mi n of Hartson Lake on n side of Honey Lake, ca. 13 mi se of Susanville 1222 Comment
  JEPS88240  Medicago lupulina Vernon H. Oswald and Lowell Ahart 1996-6-17 7812 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, on edge of trail at the 6.0 mi. post e. of Devils Corral Trailhead); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  CAS-BOT-BC271118  Melica bulbosa G. Schoolcraft 1995-5-17 2490 Lassen Three Springs on S slope of Five Springs Mtn. 1524 Comment
  UCD86379  Melica bulbosa L. Whitney 1935-7-11 3226 Lassen Camp 10, Fruit Grower's Supply Company. Lassen National Forest. Comment
  UCD87270  Melica fugax Beecher Crampton 1960-6-18 5707 Lassen Lassen County (N.E.): southern Warner Mountain, Long Valley, 6 miles southeast of Jess Valleys. 2133 Comment
  CHSC30586  Melilotus indicus P. V. Caldwell 1972-6-30 270 Lassen Jct. of Horse Lake Rd. and Hwy. 395. Comment
  CHSC1017  Mentzelia albicaulis C. Palmiter 1946-6-13 Lassen Spaulding's, Eagle Lake. 1554 Comment
  CHSC106171  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  CHSC71128  Mentzelia albicaulis Vernon H. Oswald 1998-5-22 9137 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  SFV12339  Mentzelia albicaulis J. Major 1966-6-24 s. n. Lassen Warner Mountains Above Blue Lake, about 18 miles (airline) southeast of Likely. 1905 Comment
  UC1609094  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1993-7-8 5654 Lassen 1.9 m N Hwy. 44 (on the SE edge of Poison Lake.); Pittville Rd.(Lassen 111,36N01); T32N R7E SE1/4 SE 1/4 Sec. 4 1709 Comment
  CHSC23509  Mentzelia congesta Wayne O. Baum 1971-7-19 71 -72 Lassen S. slope of Gallatin Peak. 2042 Comment
  RSA32753  Mentzelia dispersa A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. 1524 Comment
  RSA152663  Mentzelia dispersa I. L. Wiggins, Dorothy Wiggins 1961-6-10 16323 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  JEPS95001  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
  CHSC61178  Micranthes aprica Vernon H. Oswald; Lowell Ahart 1993-5-12 5373 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood), at a large opening in the forest. 1737 Comment
  SD8330  Micranthes odontoloma Mrs. R. M. Austin 1879-1 Lassen Lassen Peak Comment
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Apr 29 2013
  NY539941  Micromonolepis pusilla A. Tiehm 1986-5-12 10351 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek 1341.1 Comment
  SEINET5345127  Micromonolepis pusilla A. Tiehm 1980-1 5757 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CHSC60877  Microseris laciniata subsp. laciniata Vernon H. Oswald; Lowell Ahart 1993-7-8 5670 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  JEPS118158  Microseris laciniata subsp. laciniata Dean W. Taylor 2009-5-21 20606 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  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
  CHSC106089  Microseris nutans Lowell Ahart; John Dittes 2010-7-31 17000 Lassen Dry meadow, on the north side of the road, about 30 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC117189  Microseris nutans Lowell Ahart; John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CHSC99143  Microseris nutans Lowell Ahart; John Dittes 2008-6-19 14871 Lassen Along a small wash, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CAS-BOT-BC349297  Microseris nutans Clarence R. Quick 1961-6-21 61 -34 Lassen 0.8 mile north off Road 1, Blacks Mountain Experimental Forest, northeast of Lassen Peak 1798 Comment
  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
  CHSC7702  Microsteris gracilis Beverley J. Wise 1969-4-13 42 Lassen 2.4 mi. east of junction Hwy 395 and Las. Co. Rd. 388 (Smoke Creek Road). 1371 Comment
  JEPS120864  Microsteris gracilis Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18741 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
  RSA122927  Microsteris gracilis subsp. gracilis Anonymous 1936-5-7 S- 343 Lassen Lassen National Forest, MDM, Burgess Spr. Exp. Range 1738 Comment
  NY963937  Microsteris gracilis var. humilior V. E. Grant 1956-5-18 9802 Lassen About 8 miles south of Madeline 1280 Comment
  UC1609128  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  UC1037226  Mimulus breweri Leo Whitney 1933-8-14 1596 a Lassen ca. 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  SEINET230131 Image available Mimulus densus Noel H. Holmgren, Patricia K. Holmgren 1980-1 9512 Lassen Observation peak, S side of mountain, 18 km (11 mi) airline distance E of Ravendale 2190 Comment
  CHSC118485  Mimulus evanescens Allison Sanger; Loren Gehrung 2003-6-11 Lassen Lassen National Forest. Eagle Lake Ranger District. Near Rankin Flat west of Spalding, roughly 1.2 air miles west of Eagle Lake marina. 1822 Comment
  CHSC117184  Mimulus guttatus Lowell Ahart; John Dittes 2016-6-7 21009 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC27028  Mimulus guttatus Mrs. C. C. Bruce June 1898 2276 Lassen Shumway Comment
  JEPS23735  Mimulus inflatulus Rimo Bacigalupi with S. Galen Smith 1957-6-28 5989 Lassen 7.0 mi n of Madeline (about 1 mi n of Sage Hen siding on Southern Pacific Railroad, just e of U.S. Highway 395) 1676 Comment
  JEPS97419  Mimulus latidens Vernon H. Oswald and L. Ahart 1995-6-19 6887 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395 1350 Comment
  JEPS107380  Mimulus 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
  JEPS94563  Mimulus mephiticus Vernon Oswald and Lowell Ahart 1997-6-24 8597 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 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
  RSA126736B  Mimulus nanus var. mephiticus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  UC1567374  Mimulus nanus var. mephiticus G. Schoolcraft 1989-6-17 1909 Lassen nw slope Shaffer Mtn. 1828 Comment
  UC1609130  Mimulus nanus var. nanus Vernon H. Oswald and Lowell Ahart 1993-6-3 5482 Lassen 1.8 mi n Lassen 21 (32N02) to Eagle Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), nw edge of valley, between Poison Lake and Susanville); Pine Creek Valley 1728 Comment
  JEPS88207  Mimulus pulsiferae Vernon H. Oswald and Lowell Ahart 1996-6-24 7865 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake; Modoc Plateau, Montane Meadow in Yellow Pine Forest. On the W side of the meadow ca. 0.2 mi S of the cabins. 1633 Comment
  RSA536396  Mimulus pygmaeus Beth Corbin 1991-6-26 633 Lassen Big Merrill Flat. 14 miles NW of Susanville. 1790 Comment
  RSA536398  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-7-2 634 Lassen 0.25 mile SE of Robbers Spring, 70 ft SSW of Hwy 44, 3.5 miles NW of USFS Bogard Work Center. 1098 Comment
  RSA152664  Mimulus torreyi I. L. Wiggins, Dorothy B. Wiggins 1961-6-10 16316 Lassen 2 miles E. of Plumas-Lassen County line, along California Highway 36, near Westwood. Comment
  JEPS94562  Mitella pentandra Vernon Oswald and Lowell Ahart 1997-6-24 8615 Lassen slope along Forest Rd. 29N43 5.4 mi e Gold Run Rd. (n side of mtn., s of Susanville); Diamond Mtn. 1889 Comment
  CHSC29936  Monardella odoratissima subsp. glauca Robin L. Ondricek 1978-6-27 79 Lassen Pine Creek, sw of the bridge which crosses the creek just upstream (sw) of the California Dept. of Fish and Game's fish milking station. 1566 Comment
  CHSC65314  Monardella odoratissima subsp. glauca Vernon H. Oswald; Lowell Ahart 1995-8-14 7192 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  CHSC5271  Monardella odoratissima subsp. pallida M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  UC1537599  Monardella odoratissima subsp. pallida Gordon H. True Jr. 1938-7-14 961 Lassen Just north of summit Milford Grade 1767 Comment
  UC25488  Monardella odoratissima subsp. pallida M. S. Baker and Frank Nutting 1894-7-28 Lassen mts. s Eagle Lake Comment
  UC1136461  Monolepis nuttalliana A. Simontacchi 1940-6-4 810 Lassen 14.8 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. 1783 Comment
  CAS-BOT-BC444692  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  HSC95205  Montia chamissoi Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 542 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  NY497723  Montia chamissoi N. H. Holmgren 1978-6-11 8917 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  CHSC54192  Montia linearis Vernon H. Oswald 1991-5-28 4619 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. Locally abundant on the bed of a drying vernal pool on an undulating sagebrush flat east of the barn. 1264 Comment
  UC1951065  Montia linearis Debra Valov 2007-5-22 2007075 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CAS-BOT-BC445066  Montia linearis Louella Bass 1973-4-23 27 Lassen Elysian Valley. 1325 Comment
  JEPS88525  Montia linearis Vernon H. Oswald and Lowell Ahart 1996-6-24 7875 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montane Meadow in Yellow Forest. Comment
  CAS-BOT-BC262636  Muhlenbergia asperifolia C. S. Robinson 1928-9-18 120 Lassen Lassen National Forest. Hanna Estate, Morgan Springs. Around Sulphur Springs 1508 Comment
  CHSC93667  Muhlenbergia asperifolia Lowell Ahart; John Dittes 2005-6-2 11972 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
  JEPS70578  Muhlenbergia asperifolia W. L. Jepson 1918-8-2 7780 Lassen seepage swale below spring Beckwith Pass 1463 Comment
  UC1024645  Muhlenbergia asperifolia Leo Whitney 1934-7-4 2212 Lassen sand dunes near north shore; Lassen National Forest, Eagle Lake 1584 Comment
  UCD86528  Muhlenbergia asperifolia August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UCD86548  Muhlenbergia asperifolia John Thomas Howell; Gordon H. True 1973-8-1 50147 Lassen Roadside in Mountain Meadows east of Westwood. 1554 Comment
  UC589840  Muhlenbergia filiformis H. S. Yates 1936-8-12 6081 Lassen McKenzie Meadow Susanville Quadrangle 1524 Comment
  CAS-BOT-BC275333  Muhlenbergia jonesii John R. Reeder; Charlotte G. Reeder 1973-7-1 6240 Lassen Ca. 25 miles NW of Susanville along State Highway 44 in Lassen National Forest 1767 Comment
  RSA256323  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6238 Lassen Vicinity of Silver Lake, 22 miles NW of Susanville along Hwy 44 1768 Comment
  RSA256324  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-7-1 6240 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  RSA256322  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1973-6-5 6236 Lassen 35 miles NW of Susanvill, near Pittville sing on Hwy 44 1738 Comment
  RSA268996  Muhlenbergia richardsonis J. R. Reeder 1972-7-24 5806 Lassen Lassen National Park 1921 Comment
  SJSU4296  Muhlenbergia richardsonis J. W. Tilden 1960-6-27 1511 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  UC507007  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F- 196 Lassen Dry Lake Lassen <National> Forest, Grass Valley 1694 Comment
  UCD86899  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 Comment
  CHSC57215  Muilla transmontana Mary Meyer 1980-5-20 523 Lassen On mesa 1 mi due east of BLM campground and spring, north of Snowstorm Mountain. 1645 Comment
  CAS-BOT-BC515650  Muilla transmontana H. D. Ripley; R. C. Barneby 1944-5-29 5953 Lassen South of Jamesville 1280 Comment
  JEPS107308  Myosotis discolor Lowell Ahart, John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CHSC54193  Myosurus minimus Vernon H. Oswald 1991-5-28 4621 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. On the beds of vernal pools east of the barn. 1264 Comment
  CHSC68760  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1997-5-27 8518 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy.139. 1682 Comment
  UC1191974  Myriophyllum sibiricum Verne Grant and Irving Schneider 1947-9-5 8371 Lassen NW shore of Eagle Lake by Sam Webb's place (Spaulding). Comment
  RSA0043136  Nama aretioides var. californica Christopher Davidson 1975-6-7 2760 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS29749  Nama aretioides var. multiflora Rimo Bacigalupi and L. R. Heckard 1962-5-28 8503 Lassen in area n of Honey Lake (2 mi e of Wendel Junction on road from U.S. 395 past Flanagan to Pyramid Lake, Nevada) 1219 Comment
  CHSC60745  Nama densa var. densa Vernon H. Oswald; Lowell Ahart 1993-6-14 5539 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). In dry sand between clumps of brush on the N side of the road. 1566 Comment
  JEPS107795  Nama densa var. densa Lowell Ahart, John Dittes 2005-6-1 11908 -A Lassen On the east side of Scott Road, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1460 Comment
  UC1483804  Nama densa var. parviflora G. Schoolcraft 1980-7-10 300 Lassen n end Eagle Lake Eagle Lake; n end Eagle Lake 1584 Comment
  CAS-BOT-BC60340  Nasturtium officinale D. L. Stites 1967-6-24 29 Lassen Collected ca. 3.5 miles southeast ELBS Upper Murrer Meadow. 1524 Comment
  SEINET5624608 Image available Nasturtium officinale L. E. Ray 1967-1 29 Lassen ca. 3.5 mi SE ELBS Upper Murrer Meadow 1524 Comment
  CHSC9067  Navarretia Silas Carr 1970-6-24 126 Lassen E. edge of road entering N. portion of Murrers Meadow. Comment
  RSA0011498  Navarretia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46974 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  JEPS94539  Navarretia breweri Vernon Oswald and Lowell Ahart 1997-6-24 8605 .2 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1655 Comment
  SD3921  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  SEINET200215  Navarretia divaricata C. McMillan 1949-6-15 1541 Lassen Five miles west of Bieber Comment
  CHSC99105  Navarretia intertexta Lowell Ahart; John Dittes 2008-6-22 15028 Lassen Along a small natural drainage, about 120 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  SEINET3894760  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -065 Lassen Along Hwy 299 about 9.4 miles east of jct with Hwy A2 and 1.4 west of jct with Hwy 139, southwest of Adin.; 0 Comment
  POM74488  Navarretia intertexta Marcus E. Jones 1897-7-1 10134 Lassen 7 miles south of Susanville at Perkin's Ranch 1524 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
  UC1594648  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5101 Lassen 1.2 mi se County Rd. A21 (Long Lake on the s of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  UC909095  Navarretia intertexta subsp. propinqua G. L. Stebbins Jr. 1949-8-6 4001 Lassen nw of Susanville; Hog Flat 1676 Comment
  JEPS19812  Navarretia leucocephala Rimo Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  CHSC67574  Navarretia leucocephala subsp. leucocephala James Jokerst 1983-7-24 1878 Lassen Near madeline Plains. Vernal pool. 1614 Comment
  CHSC110909  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes 2012-7-9 18288 Lassen . Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  CHSC112444  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18778 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
  JEPS19814  Navarretia leucocephala subsp. minima Rimo Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  UC1058208  Navarretia leucocephala subsp. minima C. McMillan 1949-6-15 1542 Lassen 5 mi w Bieber Comment
  UC1137761  Navarretia leucocephala subsp. minima August L. Hormay 1934-5-15 Lassen 2 mi n Eldridge's; Lassen Forest 1524 Comment
  UC1191627  Navarretia leucocephala subsp. minima Verne Grant and Irving Schneider 1947-7-31 8208 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC909096  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 a Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  CAS-BOT-BC230389  Navarretia leucocephala subsp. minima Lincoln Constance 1946-7-3 s.n. Lassen Madeline Station Comment
  UC1143039  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  UC773906  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  POM74669  Navarretia sinistra Marcus E. Jones 1897-6-26 10226 Lassen Susanville, Perkin's Ranch. 1463 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
  HSC103518  Navarretia sinistra subsp. sinistra Thomas W. Nelson, Jane Nelson 1986-6-23 8164 Lassen Along State Route 44, 14.5 mi. NW of junction with State Route 36. 1646 Comment
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC219366  Nemophila Louella Bass 1973-4-15 26 Lassen Elysian Valley 1325 Comment
  RSA38472  Nemophila parviflora var. austiniae P. A. Munz 1947-5-18 11860 Lassen Fredonyer Forestry Public Camp Ground. W of Susanville. 1509 Comment
  JEPS114643  Nemophila pedunculata Lowell Ahart, John Dittes 2008-6-20 14918 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
  JEPS126535  Nemophila pedunculata Lowell Ahart, John Dittes 2016-6-7 21010 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC20413  Neoholmgrenia andina Mrs. R. M. Austin and Bruce June 1898 2364 Lassen Shumway Comment
  HSC22942  Nicotiana acuminata John Pratt 1970-6-27 46 Lassen 0.5 mi. E of Turtle Head 1220 Comment
  CHSC13791  Nicotiana attenuata Anne Linda Brisk 1969-7-10 45 Lassen 1/4 mi N of ELBS. 1554 Comment
  JEPS12268  Nicotiana attenuata W. L. Jepson 1939-8-12 19410 Lassen sw of Dixie Valley Comment
  UC584293  Nothocalais troximoides G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2309 Lassen w Milford; crest of range head of Stony Ridge 1950 Comment
  UC635505  Nuphar lutea subsp. polysepala Dorothy Tebbe 1929-7-30 132 Lassen in a pond near Lake Almanor Comment
  RSA0009447  Nuphar lutea subsp. polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC71093  Oenothera deltoides subsp. piperi Vernon H. Oswald; Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. On roadside banks along this section of highway. 1255 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
  SEINET10491875  Oenothera deltoides subsp. piperi Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2591 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and calif hwy 36 to susanville, near johnstonville. Assoc; purshia-artemesia. 1311 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  UCR71445  Oenothera elata subsp. hirsutissima Barbara Ertter 1987-7-24 7304 Lassen Eastern Sierra Nevada Mountains, c. 3/4 mi east-northeastof Beckwourth Pass at end of old paved road 1524 Comment
  UC157874  Olsynium douglasii var. douglasii Milo S. Baker 1890-1 Lassen Milford 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
  UC2027324  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen National Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mountain quadrangle Comment
  UC831401  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen 1 mi e Westwood 1524 Comment
  CHSC105235  Orobanche californica subsp. jepsonii Lowell Ahart; John Dittes 2010-7-31 16985 A 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
  CDA42001  Orobanche corymbosa T. C. Fuller 1980-8-5 20313 Lassen Along east side of Tuledad Road, 7.4 km. southeast of the campground on the east shore of Dodge Reservoir, northeast of Ravendale. 0 Comment
  UC1136756  Orobanche corymbosa subsp. corymbosa L. R. Short and J. Warren 1936-6-30 S- 465 Lassen NW of Eagle Lake, Burgess Spring Experiment Range. Comment
  CAS-BOT-BC500324  Orobanche uniflora subsp. occidentalis H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 18.5 mi W of Susnville, Hwy 36 Comment
  RSA408800  Orthocarpus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  RSA14096  Orthocarpus campestris Elmer I. Applegate 1929-6-24 5884 Lassen North edge of the town of Beiber, Pit River. Comment
  CHSC12936  Orthocarpus cuspidatus subsp. cryptanthus K. R. Stern 1974-6-26 5870 Lassen N margin of meadow on s side of Hwy. 44, 5.6 mi n of intersection with County Rd. A-21 to Westwood. Comment
  POM82799  Osmorhiza occidentalis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  SD7584  Osmorhiza occidentalis Mrs. R. M. Austin 1879-1 Lassen Comment
  SD232782  Oxytheca dendroidea subsp. dendroidea Greg R. Ballmer 1993-7-31 Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, ca. 2 - 5 mi. (airline) W of Nevada border. Comment
  UC30052  Oxytheca perfoliata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CHSC63381  Packera cana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6312 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  JEPS117577  Packera cana Lowell Ahart, John Dittes 2010-7-31 16990 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1510 Comment
  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
  CHSC96703  Packera pseudaurea var. pseudaurea Gordon Leppig 1998-7-12 948 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CAS-BOT-BC253786  Panicum hillmanii John Thomas Howell 1973-7-10 49808 Lassen Doyle Comment
  SEINET229883 Image available Pappostipa speciosa G. Schoolcraft 1982-6-22 721 Lassen N end of Fort Sage Mts. 1524 Comment
  UC1101564  Paspalum distichum Malcolm A. Nobs and S. Galen Smith 1949-8-20 1479 Lassen 1 mi n Doyle (banks of Long Creek); Honey Lake Valley, banks of Long Creek Comment
  SEINET10456342  Pectocarya penicillata David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17750 Lassen 3 mi. S of Hallelujah Jct, on US Hwy 395, jct of US 395 & CA 70. Comment
  CHSC64871  Pectocarya setosa Vernon H. Oswald; Lowell Ahart 1995-6-19 6892 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395. On a slope on the n side of the road. 1383 Comment
  SBBG68673  Pedicularis attollens H. and M. Dearing 1938-7-1 2238 Lassen 12 mi W of Susanville Comment
  CHSC68879  Pedicularis groenlandica Vernon Oswald; Lowell Ahart 1997-6-24 8652 Lassen South of Susanville just south of small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS94553  Pedicularis groenlandica Vernon Oswald and Lowell Ahart 1997-6-24 8652 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UCD18965  Pedicularis semibarbata Raymond D. Ratliff 1965-8-4 49 Lassen Lassen National Forest, Harvey Valley Allotment (HV 19-13). 1767 Comment
  UC303057  Pellaea brachyptera Pearl Safford Lassen Susanville [uncertain locality] Comment
  JEPS7229  Penstemon Jos. Grinnell 1928-6-26 Lassen Cinder Cone, SE slope 2103 Comment
  POM203062  Penstemon deustus subsp. heterander J. T. Howell 1934-7-9 12523 Lassen Pine Creek Flat Comment
  RSA715656  Penstemon deustus subsp. heterander L. Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  POM252931  Penstemon deustus subsp. sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass on Hwy 36. 1646 Comment
  RSA516352  Penstemon deustus subsp. sudans Barbara Ertter 1987-6-16 7178 Lassen Skeedaddle Mtns on NE side of Honey Lake, below ridge 1 mile W of Hot Springs 1829 Comment
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Mar 25 2010
  CHSC14190  Penstemon gracilentus M. S. Taylor 1974-7-10 276 Lassen Abundant in meadow ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC4862  Penstemon gracilentus R. Carter 1967-7-7 580 Lassen Collected ca. 20 yds from e shore of small reservoir. Dean's Meadow. Comment
  JEPS11269  Penstemon gracilentus Jos. Grinnell 1928-6-16 Lassen Eagle Lake Lassen Peak Region 1584 Comment
  SEINET10917288  Penstemon gracilentus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 157 Lassen Lassen National Forest. 3.9 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1900 Comment
  UC1137680  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen National Forest 1783 Comment
  UC1874751  Penstemon gracilentus Karl Vincent, Charlotte Labbe 1986-7-19 4382 Lassen Sierra Nevada, Roop Mtn.; Alng CA A1 at Eagle Lake Summit, ca. 7.6 mi N of jct. CA 36, ca 7 air mi NW of Susanville. 1932 Comment
  NY603846  Penstemon humilis var. humilis N. H. Holmgren 1978-6-11 8927 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 miles) northeast of Rye Patch Canyon summit, 21 km (13 miles) airline distance east-southeast of Ravendale. 1700 Comment
  POM252804  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen West of Westwood. Comment
  SEINET5329198 Image available Penstemon neotericus C. G. Gulling 1905-1 1543 Lassen Big Meadows Comment
  UC725482  Penstemon neotericus A. A. Heller 1938-7-28 15294 Lassen w Westwood; w of Westwood 1524 Comment
  CHSC36470  Penstemon roezlii Jeffrey R. Peek 1982-6-4 31 Lassen Ca. .5 mi e of Murrers Upper Meadow on road going to meadow. 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
  NY650129  Penstemon roezlii D. D. Keck 1930-7-23 954 Lassen 12 miles west of Susanville 1676.4 Comment
  RSA668002  Penstemon roezlii Karl Vincent 1986-6-14 4321 Lassen Upper Long Valley, along E side of US 395, ca 5.5 mi N of jct US 70, ca 13.2 rd mi N of Bordertown and Nevada state line. 1463 Comment
  UC690374  Penstemon roezlii David D. Keck and J. Clausen 1935-6-24 3727 Lassen 5 mi s Likely ((Modoc Co.)); s of Likely 1400 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
  CAS-BOT-BC239500  Penstemon rydbergii var. oreocharis John Thomas Howell 1934-7-7 12460 Lassen Board Ranger Station Comment
  CAS-BOT-BC239507  Penstemon rydbergii var. oreocharis John Thomas Howell 1934-7-7 12460 Lassen Bogard Ranger Station Comment
  CAS-BOT-BC239510  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-23 15193 Lassen About 4 miles east of Westwood 1432 Comment
  CHSC30588  Penstemon rydbergii var. oreocharis Marc Held 1972-6-29 23 Lassen South end of Dean's Meadow. Comment
  CHSC5915  Penstemon rydbergii var. oreocharis R. Gein 1946-6-24 Lassen McCoy Flat, west of Eagle Lake. 1645 Comment
  JEPS124372  Penstemon rydbergii var. oreocharis Lowell Ahart, John Dittes 2015-7-13 20316 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 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
  UC1012182  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36 road to Coppervale R.S., e Westwood; e of Westwood 1493 Comment
  UC70352  Penstemon rydbergii var. oreocharis Milo S. Baker 1890-1 Lassen Milford Comment
  CHSC5916  Penstemon speciosus J. B. Kimsey 1946-6-10 Lassen Eagle Lake. 1554 Comment
  HSC63768  Penstemon speciosus Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N tip of Eagle Lake 1768 Comment
  JEPS95972  Penstemon speciosus Vernon H. Oswald and L. Ahart 1999-6-9 9747 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  NY660809  Penstemon speciosus N. H. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale. 1680 Comment
  NY661010  Penstemon speciosus L. Constance 1938-6-11 2331 Lassen 3.5 miles north of Secret Valley, Madeline Plains on Susanville-Alturas road 1524.0 Comment
  NY661040  Penstemon speciosus G. W. Gillett 1953-7-1 273 Lassen Fredonyer Pass, Highway 36. Lassen National Forest. 1752.6 Comment
  RSA340000  Penstemon speciosus Noel Holmgren, Patricia K. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 (9.2 mi) east of US Hwy 395 via Rye Patch Canyon, 19 km (12 mi) airline distance ESE of Ravendale. 1677 Comment
  UC1520676  Penstemon speciosus Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9518 Lassen 19 km (12 mi) airline distance ese Ravendale (14.8 km (9.2 mi) e U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1680 Comment
  POM203061  Penstemon speciosus J. T. Howell 1934-6-10 11905 Lassen 3 miles S of Ravendale. Comment
  RSA38458  Penstemon speciosus Philip A. Munz 1947-5-19 11877 Lassen Hwy 395, 3.5 miles S of Ravendale. 1616 Comment
  CHSC23482  Penstemon sudans Wayne O. Baum 1971-7-9 71 -86 Lassen E slope of Gallatin Peak. 2072 Comment
  JEPS94561  Penstemon sudans Vernon Oswald and Lowell Ahart 1997-6-24 8599 Lassen on Forest Rd. 29N43 1.2 mi e Gold Run Rd. (29N10) (n side of mt., s of Susanville); Diamond Mtn. 1685 Comment
  NY661797  Penstemon sudans G. W. Gillett 1953-7-13 274 Lassen Fredonyer Pass, Highway 36. One mile east of pass. 1706.9 Comment
  NY661808  Penstemon sudans D. D. Keck 1935-6-25 3756 Lassen Susanville; just west of town Comment
  RSA299501  Penstemon sudans J. T. Howell 1977-6-22 s.n. Lassen West of Susanville, near the confluence of Willard Creek and Susan River 1433 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
  SEINET5323638 Image available Penstemon sudans G. Schoolcraft 1998-7-8 2752 Lassen Along Hwy 139 about 3 mi. n. os Susanville. 1402 Comment
  OBI82794  Penstemon venustus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3935 Lassen E of Freydonyer Pass. 6.2 rd mi west on Hwy 36 after jct with Hwy 44. S side of rd. Ca 11 air mi wsw of Susanville.; 0 1659 Comment
  CDA26041  Peraphyllum ramosissimum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20382 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  CHSC7723  Peraphyllum ramosissimum Beverley J. Wise 1969-5-4 193 Lassen 1.5 mi. west of Shaeffer Mtn lookout access road off Hwy 395 (approx. 1 mi. south of Las Co. 338). 1676 Comment
  RSA0092314  Perideridia bolanderi subsp. bolanderi Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31422 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  UC1123141  Perideridia bolanderi subsp. bolanderi A. Simontacchi 1940-6-11 846 Lassen 3.7 mi sse Black Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1567445  Perideridia bolanderi subsp. bolanderi G. Schoolcraft 1989-5-31 1889 Lassen Skedaddle Ranch Rd. about 6 mi n Wendel Road 1493 Comment
  SEINET12120566  Perideridia gairdneri Unknown 1978-1 3 Lassen Papoose Creek, SE corner of Eagle L 1585 Comment
  CHSC105250  Perideridia kelloggii Lowell Ahart; John Dittes 2010-7-31 16993 Lassen On bottom of small wash, about 20 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CAS-BOT-BC423341  Peritoma platycarpa H. D. Ripley; R. C. Barneby 1943-6-15 5757 Lassen Nr. Viewland 1310 Comment
  CAS-BOT-BC423343  Peritoma platycarpa A. A. Heller 1938-6-23 15207 Lassen On the grade east of Litchfield, on U. S. Highway #395 1371 Comment
  SEINET5845147  Peritoma platycarpa J. A. Young 1982-6-7 s.n. Lassen Redlands 1676 Comment
  CHSC30561  Persicaria Sori H. Shad 1970-6-19 8 Lassen Found on pine creek, 50 yard below california fish and game cambine [sic[. 1524 Comment
  CHSC6230  Persicaria amphibia J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  RSA722579  Phacelia adenophora R. R. Halse 1975-6-20 1198 Lassen Madeline Plains, along Lassen County Road 508, 1.5 miles east of Termo. 1590 Comment
  RSA75519  Phacelia adenophora F. W. Peirson 1926-6-24 6851 Lassen On Madeline Plain. Comment
  UCD120256  Phacelia adenophora Philip A. Munz 1947-5-19 11881 Lassen Near road, Madeline. 1676 Comment
  CHSC71089  Phacelia bicolor var. bicolor Vernon H. Oswald; Lowell Ahart 1998-5-22 9132 Lassen Near the summit of the dirt road in the Fort Sage Mtns. 3.5 mi east of Fort Sage Rd., ca. 6 mi NE of Doyle. 1737 Comment
  UC1609410  Phacelia glandulifera Vernon H. Oswald and Lowell Ahart 1993-6-14 5541 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), n side of rd); Eagle Lake 1566 Comment
  UC1523735  Phacelia hastata Gary Schoolcraft 1981-6-15 462 Lassen Ash Valley 1584 Comment
  UC726924  Phacelia hastata A. A. Heller 1941-6-24 16192 Lassen 3 mi e Bieber Comment
  SDSU6617  Phacelia hastata D. F. Howe 1964-7-1 3913 Lassen 4.8 miles from Harvey Creek on ridge road, Modoc National Forest, 2134 Comment
  GMDRC6948  Phacelia hastata subsp. hastata J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31421 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  RSA715987  Phacelia heterophylla subsp. virgata L. Ahart, John Dittes 2005-6-2 11952 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4.75 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction 1513 Comment
  CHSC5262  Phacelia humilis 1944-7-9 Lassen Dow Butte, Eagle Lake. 2042 Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  UC1259992  Phacelia humilis Jeffrey Huber 1971-6-2 111 Lassen on CA Hwy 139 approx. 30 mi n Susanville 1645 Comment
  UC133087  Phacelia humilis T. S. Brandegee 1892-7-3 Lassen Susanville Comment
  UCD120530  Phacelia humilis var. humilis Beecher Crampton 1960-6-18 5728 Lassen N.E. part of county; southern Warner Mtns., vicinity Blue Lake Ranch. 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
  JEPS79142  Phacelia inundata L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  UC735052  Phacelia inundata Lincoln Constance 1946-7-3 3097 Lassen Spauldings Eagle Lake (w edge of lake) 1706 Comment
  NY998462  Phacelia linearis N. H. Holmgren 1980-7-4 9501 Lassen Observation Peak, south side of mountain, 18 km (11 miles) airline distance east of Ravendale 1890 Comment
  UC1609380  Phacelia linearis Vernon H. Oswald and Lowell Ahart 1993-6-14 5532 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach Eagle Lake (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), upper beach between road and lake) 1566 Comment
  UCR80208  Phacelia linearis J. T. Howell 1934-6-10 11901 Lassen 3 mi. south of Ravendale. 1638 Comment
  POM73412  Phacelia linearis C. C. Bruce 1898-06 2190 Lassen Madeline Plains. Comment
  RSA149122  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-16 16530 Lassen 0.8 mile west of summit of Big Valley Pass. Comment
  RSA303850  Phacelia linearis Jim R. Shevock 1972-5-20 1819 Lassen Highway 395, Honey Lake. 1311 Comment
  RSA324239  Phacelia lutea Arnold Tiehm, Raymond Evans, James Young 1984-6-7 8593 Lassen Flats n the northwest side of Shaffer Mountain. 7.5 airmiles NNW of Litchfield. 1372 Comment
  NY1056437  Phacelia lutea var. glandulifera A. A. Heller 1938-6-23 15210 Lassen U.S. Highway #395, about midway between Mapes and Secret Valley 1372 Comment
  NY1056439  Phacelia lutea var. glandulifera W. W. Eggleston 1911-7-7 7166 Lassen Secret Valley 1330 Comment
  UC506976  Phacelia mutabilis George A. Fischer, Irwin H. Johnson 1933-7-12 F 226 Lassen Lassen <National> Forest 1722 Comment
  UC1084101  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 Englemine and Indian Valley); Gold Run Creek 1767 Comment
  OBI75900  Phacelia racemosa Anthony Baniaga 2011-8-1 477 Lassen Lassen Natl Forest. SW Swain Meadow, near marker tree #27. Swain Mtn quad T30N R8E sec 34 NE of NW 1764 Comment
  UC24457  Phacelia ramosissima var. eremophila Milo S. Baker 1894-7-25 Lassen Eagle Lake 1524 Comment
  RSA72886  Phacelia tetramera Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  JEPS79143  Phacelia thermalis L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  POM73715  Phacelia thermalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SJSU14072  Phacelia thermalis W. Savage 1964-6-30 338 Lassen by Hwy 338, 11 mi N of Susanville Comment
  UC1567390  Phacelia thermalis G. Schoolcraft 1989-5-3 1868 Lassen s Karlo; North end of Secret Valley 1341 Comment
  UC710908  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen 1 mi w Bieber; floodplain of Pitt River Comment
  RSA40730  Phacelia thermalis C. L. Hitchcock 1940-5-26 6641 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CAS-BOT-BC265822  Phalaris arundinacea John Thomas Howell 1974-7-8 50477 Lassen Susanville, Sierra Nevada 1295 Comment
  HSC93434  Phalaris arundinacea Vernon H. Oswald, L. Ahart 1996-8-1 8108 Lassen Mtn. Meadows Reservoir SW of Westwood 1540 Comment
  CAS-BOT-BC232852  Phlox David D. Keck; J. Clausen 1935-6-24 3744 Lassen 2 miles S of Ravendale Comment
  CHSC4271  Phlox diffusa K. R. Stern 1967-6-25 2430 Lassen On road to Eagle Lake Biological Station, ca. 3 mi. E of Eagle Lake. 1676 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
  UC1124221  Phlox gracilis A. Simontacchi 1940-5-10 690 Lassen 7.3 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1124222  Phlox gracilis K. E. Bradshaw 1939-5-27 230 Lassen Black Mountain Experimental Forest, Plot 39-1, s end Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1137763  Phlox gracilis August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  RSA647573  Phlox longifolia Marion P. Harthill 1971-6-21 226 Lassen Ravendale Comment
  RSA647574  Phlox longifolia Marion P. Harthill 1971-6-21 227 Lassen Ravendale Comment
  UC1924596  Phlox speciosa Debra Valov 2006-5-28 2006006 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1305 Comment
  NY963723  Phlox speciosa LeDoux 1973-5-25 867 Lassen Collected 3 miles north of Milford, on Highway 395 at Honey Lake campgrounds Comment
  NY963724  Phlox speciosa var. occidentalis W. W. Eggleston 1911-5-29 6733 Lassen Vicinity of Doyle Station 1290 Comment
  CHSC71130  Phlox stansburyi Vernon H. Oswald; Lowell Ahart 1998-5-22 9114 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca 5 mi NNE of Doyle. 1402 Comment
  UCD55262  Phlox stansburyi Ellen Dean 2006-5-15 3060 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  UCD118467  Phlox stansburyi Geo C. Wood 1940-4-18 s.n. Lassen Coffin Ranch near Susanville. Comment
  RSA772875  Pilularia americana R. F. Thorne, Larry E. DeBuhr 1975-8-22 47209 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  SEINET11604048  Pinus jeffreyi D. A. Charlet 2013-2-15 3725 Lassen At gate to mine in Upper long Valley, west of US highway 395, Fairly large stand 1430 Comment
  SEINET11610645  Pinus lambertiana David Charlet 1996-7-8 2291 Lassen Diamond Mts; Sierra Nevada Janesville Grade, Great Basin drainage (Honey Lake) 1859 Comment
  NY951542  Pinus ponderosa var. ponderosa D. H. Goldman 2004-11-6 2941 Lassen Along the N side of Forest Road 32N08, just N of Pine Creel Valley and about 1.8 miles E of the intersection with Rt. 44. Crater Lake Mountain, Lassen National Forest 1725 Comment
  JEPS28716  Plagiobothrys cognatus George W. Gillett 1957-7-29 954 Lassen Snag Lake Lassen Volcanic National Park (shoreline near e inlet) 1850 Comment
  SJSU8053  Plagiobothrys cognatus R. L. Fisher 1958-6-16 Lassen 6 mi S of Madeline Comment
  UCD120786  Plagiobothrys cognatus B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  CHSC113070  Plagiobothrys cusickii Lowell Ahart; John Dittes 2013-7-22 18870 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS114769  Plagiobothrys cusickii Lowell Ahart, John Dittes 2008-6-20 14914 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS124383  Plagiobothrys cusickii Lowell Ahart, John Dittes 2015-7-13 20305 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0105587  Plagiobothrys cusickii Lowell Ahart, John Dittes 2013-7-22 18870 Lassen 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC224974  Plagiobothrys hispidulus John Thomas Howell; Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, E slope of Diamond Range S of Susanville 2164 Comment
  CHSC29970  Plagiobothrys hispidulus R. A. Schlising 1979-6-7 3452 Lassen S end of Eagle Lake, at Papoose Creek and Meadow in Lassen National Forest. In streambed. 1584 Comment
  UC1137695  Plagiobothrys hispidulus L. R. Short and Wm. Gansberg 1936-6-8 S- 389 Lassen Lassen National Forest 1743 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
  SD149177  Plagiobothrys hispidus John Thomas Howell, Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2160 Comment
  UC1561381  Plagiobothrys hispidus Barbara Ertter with Gary Schoolcraft 1987-6-16 7190 Lassen on s side Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2286 Comment
  JEPS107963  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  HSC31353  Plagiobothrys mollis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19273 Lassen Harvey Valley near Cone Springs Comment
  UC1533150  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen w Ash Valley (along edge of Moll Reservoir); edge Moll Reservoir 1606 Comment
  RSA0105581  Plagiobothrys mollis var. mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA39738  Plagiobothrys scouleri var. hispidulus P. A. Munz 1947-5-20 11891 Lassen Milford. 1265 Comment
  SEINET10972885  Plagiobothrys scouleri var. hispidulus Katherine L. Morris 1973-5-25 Morris 248 Lassen 27.7 mi NW of the junction of Hwy 36 & 44 on Hwy 44, at Robber's Spring, in an open meadow on one side of the hwy with yellow pine, white fir and open on the other side. 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
  UC101433  Plagiobothrys tenellus Marcus E. Jones, A. M. 1897-6-18 7141 Lassen Chat 1524 Comment
  CHSC30564  Platanthera leucostachys Sori H. Shad 1970-6-19 21 Lassen Above and east of Galatin Beach. 1524 Comment
  POM260454  Plectritis congesta subsp. brachystemon C. Leo Hitchcock 1940-5-26 6604 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  CHSC107326  Plectritis macrocera Lowell Ahart; John Dittes 2011-6-20 17494 Lassen Meadow, about 30 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
  CHSC112449  Plectritis macrocera Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18747 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
  CHSC99738  Plectritis macrocera Lowell Ahart; John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  JEPS114707  Plectritis macrocera Lowell Ahart, John Dittes 2008-6-20 14971 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  RSA337278  Plectritis macrocera Noel Holmgren, Patricia K. Holmgren 1980-7-3 9488 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Hwy 395, 14.5 km (9 mi) airline distance southeast of Ravendale. 1700 Comment
  UC1553411  Plectritis macrocera G. Schoolcraft 1987-5-19 1702 Lassen 16 mi e of Adin (Ash Valley (RNA/ACEC)); Ash Valley 1554 Comment
  CAS-BOT-BC326715  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade south of and paralleling Highway 70 just southeast of Beckwourth Pass on Plumas-Lassen county line 1584 Comment
  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
  JEPS36547  Pleiacanthus spinosus W. L. Jepson 1918-8-2 7790 Lassen Long Valley 1371 Comment
  UC1562342  Pleiacanthus spinosus Vernon Oswald and Lowell Ahart 1990-7-25 4395 Lassen 2.2 mi w Highway 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  RSA273386  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
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May 9 2012
  UCD92181  Poa J. B. Davy 17-24 Jun 1897 3319 Lassen Honey Lake Valley. Byer's Ranch. Comment
  UCD92183  Poa George A. Fischer; Irwin H. Johnson 1933-7-14 F 245 Lassen Patterson Flat - Lassen Nat'l Forest. 1737 Comment
  CHSC36503  Poa bulbosa Theresa Costa 1982-6-2 22 Lassen Ca. 3.5 mi e jct Hwy I39 and Ravendale Rd, ca 5 yd n Ravendale Rd. Creekside. Comment
  UCD90919  Poa cusickii Leo Whitney 1935-6-10 3219 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UC1024837  Poa cusickii subsp. cusickii Leo Whitney 1935-6-10 3219 Lassen Camp 10 Fruit Grower's Supply Company Comment
  HSC95195  Poa leptocoma subsp. leptocoma Gordon Leppig, J. Cromwell 1997-7-27 629 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC61599  Poa pratensis Arthur C. Barrett 1915-6-3 18 Lassen Plumas National Forest. Laufman Ranger Station. Meadow. 1463 Comment
  SEINET190961 Image available Poa pratensis A. A. Beetle 2797 Lassen 10 miles west of Chester Mountain meadow. 1524 Comment
  UC60738  Poa pratensis subsp. pratensis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  POM203054  Poa secunda J. T. Howell 1934-7-6 12459 Lassen Harvey Valley Comment
  POM267993  Poa secunda D. D. Keck 1944-7-8 5456 Lassen 5 miles east of Westwood, on road to Fredonyer Pass. 1585 Comment
  UCD90322  Poa secunda A. A. Beetle; G. L. Stebbins Jr. 1942-5-30 3365 Lassen Nubieber. Comment
  CHSC33318  Poa secunda subsp. juncifolia P. Reynolds 1979-7-4 18 Lassen 3 mi. NE of Wendel, Wendel Canyon in the Skedaddle Mtn. Range. 1371 Comment
  SJSU15450  Poa secunda subsp. juncifolia John Rawlings, Sara Timby 2014-6-15 1265 Lassen In and around BLM campground at north end of Eagle Lake. 1580 Comment
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Feb 18 2015
  UC1037128  Poa secunda subsp. juncifolia Leo Whitney 1935-6-19 3259 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC718011  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5447 Lassen 2 mi w Westwood (meadow leading to Mountain Meadows Reservoir); Sierra Nevada 1524 Comment
  UCD92377  Poa secunda subsp. juncifolia B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD92396  Poa secunda subsp. juncifolia A. H. Shunk 1923-7-28 s.n. Lassen Madeline. Comment
  UCD92429  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-28 s.n. Lassen Bieber. Comment
  SEINET7854865  Poa secunda subsp. juncifolia G. Schoolcraft 1995-5-22 2489 Lassen East of Skedaddle Ranch. 1554 Comment
  CAS-BOT-BC236179  Poa secunda subsp. secunda Louella Bass 1973-5-25 EU 44 Lassen Elysian Valley 1325 Comment
  UC1024839  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3217 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1567404  Poa secunda subsp. secunda G. Schoolcraft 1989-7-18 1975 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UC70959  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Comment
  UCD91755  Poa wheeleri Leo Whitney 1935-6-13 3240 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UCD91756  Poa wheeleri L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp 10. Comment
  CHSC67263  Polemonium micranthum James D. Jokerst 1991-5-29 3312 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of ridge N of drainage. 1584 Comment
  CDA40272  Polemonium micranthum Lee Wheeler 1960-4-13 3941 Lassen At the fairgrounds, Susanville. 0 Comment
  SEINET8729406 Image available Polemonium micranthum Unknown 1986-1 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill, T36N, R16E, S35, 5600 ft. 1707 Comment
  SD61072  Polemonium occidentale Darley F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mountains, Modoc Natl. Forest 2012 Comment
  SDSU3228  Polemonium occidentale D. F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mtns., Modoc National Forest 2012 Comment
  UC73604  Polemonium occidentale Milo S. Baker 1894-1 Lassen Bridge Creek Comment
  CAS-BOT-BC74170  Polyctenium fremontii Arnold Tiehm; Margaret Williams; Jan Nachlinger 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, along the highway. 1347 Comment
  SEINET258241 Image available Polyctenium fremontii var. confertum Arnold Tiehm, Jan Nachlinger, Margaret Williams 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on Hwy. 295 from Susanville to Alturas. T30N R15E Sec 15 1350 Comment
  RSA0004885  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  CAS-BOT-BC167848  Polygala subspinosa H. D. Ripley; R. C. Barneby 1943-6-15 5760 Lassen E. of Viewland 1310 Comment
  CHSC4777  Polygonum R. Carter 1967-6-27 556 Lassen Ca. 100 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology Station. 1584 Comment
  NY404581  Polygonum amphibium var. emersum G. H. True Jr. 1939-7-6 1038 Lassen George Bailey Ranch, Honey Lake Valley Comment
  CHSC36980  Polygonum aviculare subsp. neglectum M. S. Taylor 1982-8-19 5021 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Junction. 1493 Comment
  UCD33604  Polygonum californicum Beecher Crampton 1970-6-26 8637 b Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  UC1562677  Polygonum davisiae Barbara Ertter 1988-7-25 7863 Lassen ridge ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville); Diamond Mts. 2286 Comment
  CAS-BOT-BC414489  Polygonum douglasii Clare B. Hardham 1969-8-28 17432 A Lassen West of Janesville Comment
  JEPS117591  Polygonum douglasii subsp. douglasii Lowell Ahart, John Dittes 2010-7-31 16978 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
  CHSC25902  Polygonum douglasii subsp. spergulariiforme K. R. Stern 1967-7-1 2467 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. Comment
  UC1178952  Polygonum douglasii subsp. spergulariiforme Herbert L. Mason Jul 29 1955-Jul 31 1955 14645 Lassen near Westwood Junction ((railroad station 15 mi w of Susanville), s Lassen Co.) Comment
  HSC31370  Polygonum minimum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19243 Lassen About 3 mi. N of Westwood Comment
  SD7880  Polygonum minimum Mrs. R. M. Austin none given Lassen Lassen Co. Comment
  UC1603211  Polygonum polygaloides J. Guardino 1993-6-8 261 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603212  Polygonum polygaloides J. Guardino 1993-5-22 171 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603213  Polygonum polygaloides J. Guardino 1993-5-22 167 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603214  Polygonum polygaloides J. Guardino 1993-6-9 281 A Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CHSC112396  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18732 Lassen Drainage filled with dirt form construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  HSC69611  Polygonum polygaloides subsp. confertiflorum Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  UC1191311  Polygonum polygaloides subsp. confertiflorum Herbert L. Mason Jul 29 1955-Jul 31 1955 14639 Lassen Pine Creek Flat Comment
  CHSC58507  Polygonum polygaloides subsp. kelloggii Vernon H. Oswald 1992-7-3 5047 Lassen Lassen Volcanic National Park. Trail from Juniper L. to Cameron Meadow, between the trail to Jakey L. and the trail to Horseshoe L. 1981 Comment
  UC773864  Polygonum polygaloides subsp. kelloggii L. R. Short and Wm. Gansberg 1936-6-8 S- 390 Lassen Burgess Spring Experimental Range Lassen <National> Forest 1743 Comment
  JEPS97417  Polygonum ramosissimum Vernon H. Oswald and L. Ahart 1995-6-19 6880 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  UC1136188  Polygonum sawatchense subsp. sawatchense A. Simontacchi 1940-5-28 780 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA122848  Polygonum spergulariiforme L. R. Short 1936-9-30 s 501 Lassen Burgess Spring, Exp Range. 1768 Comment
  JEPS107817  Polypogon monspeliensis Lowell Ahart, John Dittes 2005-6-2 11967 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  RSA715989  Polypogon monspeliensis L. Ahart, John Dittes 2005-6-2 11967 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  SEINET10661618  Polypogon monspeliensis Lowell Ahart, John Dittes 2005-6-2 Ahart 11967 Lassen T23N, R17E, southwest 1/4 Section 10. Long Valley, about 4 1.2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CHSC12480  Populus tremuloides Carol Weld 1969-6-25 21 Lassen Murrer's Meadow. 1524 Comment
  UC526144  Porterella carnosula John Thomas Howell 1934-7-7 12466 Lassen near Feather Lake; near Feather Lake Comment
  SEINET10460819  Porterella carnosula G. Ledyard Stebbins 1949-8-6 Stebbins 4002 Lassen Edge of Feather Lake, between Susanville and McArthur. Mud flats 1676 Comment
  SEINET10460828  Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 Holmgren 9463 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 mi.) south of Madeline. T36N R13ES9 1620 Comment
  SEINET10460830  Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1978-6-10 Holmgren 8901 Lassen Madeline Plains, Coyote Flat, 14.5 km (9 mi) east-northeast of Termo and 13 km (8 mi) airline distance. T35N R15ES7 1630 Comment
  SEINET5334401  Portulaca oleracea Unknown 1942-8-31 s.n. Lassen Honey Lake Valley. 1067 Comment
  JEPS103225  Potamogeton alpinus subsp. tenuifolius G. Schoolcraft 1996-9-11 2564 Lassen Willow Creek below petroglyphs and above dam 1432 Comment
  UCD138219  Potamogeton amplifolius Gordon Leppig 1998-8-18 1064 Lassen Modoc National Forest; Blue Lake. Lake shore south of camp ground. 1859 Comment
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  CAS-BOT-BC267150  Potamogeton foliosus W. I. Follett; Seth Bertram Benson 1957-11-2 s.n. Lassen Tributary of Secret Creek, 1.1 miles N of Karlo Comment
  CHSC65369  Potamogeton foliosus var. foliosus Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7219 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. Along the W shore of the lake. 1859 Comment
  CHSC66284  Potamogeton gramineus Vernon H. Oswald; Lowell Ahart 1996-6-24 7876 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  UC2046022  Potamogeton natans Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-24 11167 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. Comment
  UC1100075  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8243 Lassen e end of Tule Lake Comment
  CAS-BOT-BC453914  Potamogeton pectinatus Verne Grant; Irving Schneider 1947-9-6 8380 Lassen North arm of Eagle Lake Comment
  UC1099900  Potamogeton pusillus var. pusillus Verne Grant, Irving Schneider 1947-7-31 8212 Lassen Madeline Plain, ne quarter of George Williams section 19 Madeline Plain Comment
  RSA233761  Potamogeton richardsonii Robert F. Thorne, C. W. Tilforth 1969-9-5 39140 Lassen Said Valley Reservoir. Comment
  JEPS97316  Potamogeton zosteriformis Vernon H. Oswald 1995-8-26 7220 Lassen T38N R15E Sec. 20, 6100 ft, Warner Mtns., Fresh-water Lake in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  JEPS100240  Potentilla basaltica Dean Wm. Taylor with Glenn Clifton 1990-6-12 10882 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  UCD113701  Potentilla biennis Verne Grant; Irving Schneider 1947-7-30 8189 Lassen South point of west embayment, Tule Lake. Comment
  CHSC27741  Potentilla glandulosa subsp. ashlandica Cindy Prouty 1978-7-5 3 Lassen E shore of Mahogany L., S of Eagle L. Meadow. 2060 Comment
  CHSC27742  Potentilla glandulosa subsp. ashlandica N. E. Heiken 1978-7-5 76 Lassen S of Eagle L., E shore of Mahogany L. 2060 Comment
  JEPS107940  Potentilla gracilis var. elmeri Lowell Ahart, John Dittes 2005-6-1 11854 Lassen Long Valley, on the west side of the poor dirt road, about 1/2 mile west of Scott Road, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  POM34036  Potentilla gracilis var. elmeri Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC4985  Potentilla gracilis var. fastigiata R. Clicquennoi 1967-6-24 12 Lassen NW corner of Eagle Lake on highway 139. 1524 Comment
  CHSC6256  Potentilla gracilis var. fastigiata V. Holt 1946-6-30 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  JEPS114356  Potentilla gracilis var. fastigiata Lowell Ahart, John Dittes 2008-6-20 14954 Lassen In meadow, about 200 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC540361  Potentilla gracilis var. fastigiata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49453 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC540363  Potentilla gracilis var. fastigiata John Thomas Howell 1934-7-7 12461 Lassen Bogard Ranger Station Comment
  CAS-BOT-BC158477  Potentilla gracilis var. gracilis Alice Eastwood; John Thomas Howell 1940-6-11 7997 Lassen Bieber Comment
  CHSC4758  Potentilla millefolia R. Carter 1967-7-14 614 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir. Comment
  CHSC4889  Potentilla millefolia L. G. Bennett 1967-7-17 166 Lassen 0.3 mi n of junction of Silver Lake Road and Hwy 44, on Hwy 44. 1975 Comment
  CAS-BOT-BC144841  Potentilla rivalis Verne Grant; Irving Schneider 1947-8-1 8236 Lassen East end of Tule Lake Comment
  CHSC5273  Prunella vulgaris var. lanceolata M. West 1946-7-7 Lassen Eagle Lake. Butte Creek. Comment
  CAS-BOT-BC159776  Prunus andersonii Ella Dales Cantelow 1938-10-23 2192 Lassen N. of Doyle, Honey Lake in view Comment
  CAS-BOT-BC159781  Prunus andersonii Margaret Williams 1974-8-4 74 -L-75 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC114712  Prunus andersonii B Villegas 2011-3-26 Lassen Hellelujah Junction. NE corner of HWY 395 and HWY 70 intersection. Comment
  CHSC118852  Prunus andersonii L. P. Janeway; B. Castro 2015-6-5 11767 Lassen Great Basin, Modoc Plateau. Along the road from the south endof Surprise Valley to Tuledad Canyon, 12.1 road-km south of Surprise Valley Road; 1.8 air-km east of Newland Reservoir/Bare Creek. 1959 Comment
  CAS-BOT-BC154773  Prunus virginiana var. demissa John Thomas Howell 1974-7-8 50494 Lassen Susanville 1295 Comment
  CHSC66398  Prunus virginiana var. demissa Vernon H. Oswald; Lowell Ahart 1996-6-17 7767 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  CHSC7721  Prunus virginiana var. demissa Beverley J. Wise 1969-5-18 192 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On canyon wall. 1554 Comment
  JEPS107870  Prunus virginiana var. demissa Lowell Ahart, John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  UCD113534  Prunus virginiana var. demissa W. Robert Powell 1985-7-30 3080 c Lassen about 3 miles WNW of Susanville on narrow flood plane of Piute Creek. 1402 Comment
  CAS-BOT-BC239802  Pseudoroegneria spicata John Thomas Howell 1976-7-20 52002 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  POM267992  Pseudoroegneria spicata subsp. spicata D. D. Keck 1944-7-9 5450 Lassen 1.5 miles W. of Susanville on rim of plateu overlooking Susan River Canyon 1341 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
  CHSC112453  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18756 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
  CHSC60879  Psilocarphus oregonus Vernon H. Oswald; Lowell Ahart 1993-7-8 5672 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  JEPS102794  Psoralidium lanceolatum Vernon H. Oswald 2001-6-2 10040 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  CAS-BOT-BC453500  Pterospora andromedea John Thomas Howell; Gordon H. True 1973-7-31 50024 Lassen Sierra Nevada, on road from Janesville to Thompso Peak, Diamond Range 1737 Comment
  CDA38860  Pterospora andromedea H. Wilkerson & W. F. Cruickshank Sep 1964 s.n. Lassen Hayden Hill. 0 Comment
  HSC22982  Pterospora andromedea John Pratt 1970-7-10 70 Lassen 1524 Comment
  CHSC115612  Puccinellia distans Lowell Ahart; John Dittes 2015-7-14 20330 Lassen West side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UCD91890  Puccinellia lemmonii Freed W. Hoffman 1946-5-28 1820 Lassen Beiber. Comment
  CAS-BOT-BC147822  Purshia tridentata var. tridentata Margaret Williams; Steven Williams 1974-7-26 74 -L-19 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  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
  JEPS88575  Purshia tridentata var. tridentata Vernon H. Oswald and Lowell Ahart 1996-6-17 7769 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, along the trail on n side of Highway 36 0.2 mi e of 7 Mile Post); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  RSA60361  Purshia tridentata var. tridentata E. K. Balls 1950-5-9 15946 Lassen 6 miles S of Doyle, Hwy 395 1372 Comment
  UC1167550  Purshia tridentata var. tridentata E. C. Nord 1958-7-12 108 Lassen near Janesville (near Plumas National Forest) 1371 Comment
  UC12421  Purshia tridentata var. tridentata M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC462757  Pyrola dentata John Thomas Howell; Gordon H. True 1973-7-31 50023 Lassen Sierra Nevada: on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  UC412673  Pyrola picta Franklin P. Nutting Jul 1928 Lassen Mts. S of Eagle Lake Comment
  CHSC60880  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald; Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd. (Lassen 111, 36N01) 3.0 mi N of Hwy. 44, NE of Poison Lake. 1709 Comment
  UC1136851  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range 1783 Comment
  UC35843  Pyrrocoma hirta var. lanulosa M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  CAS-BOT-BC362273  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains 1614 Comment
  CHSC115718  Pyrrocoma lucida Kirsten Bovee 2012-8-12 Lassen Along Road 28N38 east of south end of Mountain Meadows Reservoir, straddling boundary with private land. Some seven air miles southeast of Westwood, CA. 1554 Comment
  UC1192231  Pyrrocoma racemosa var. paniculata Verne Grant and Irving Schneider 1947-9-6 8392 Lassen near Wendel (w of Fleming Rach Headquarters) Comment
  UC21043  Pyrrocoma racemosa var. paniculata J. Burtt Davy Jun 17 1897-Jun 24 1897 3380 Lassen Honey Lake Valley Comment
  CHSC5250  Quercus kelloggii P. Balch 1955-7-25 Lassen Eagle Lake. Roop Mt. Rd., 5 mi from Susanville. 1828 Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  CHSC41844  Ranunculus aquatilis var. capillaceus P. V. Caldwell 1972-7-12 284 Lassen Floating on pools and on banks of Papoose Creek. Comment
  CHSC66258  Ranunculus aquatilis var. diffusus Vernon H. Oswald; Lowell Ahart 1996-6-24 7877 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  JEPS121299  Ranunculus aquatilis var. diffusus Lowell Ahart, John Dittes 2013-7-23 18891 Lassen Margins of a man-made pond, about 150 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  NY494380  Ranunculus cymbalaria M. A. Nobs 1949-8-20 1484 Lassen Marshy banks of Long Creek, 1 mile north of Doyle, Honey Lake Valley Comment
  SEINET10536136  Ranunculus cymbalaria Mary Susan Taylor 1974-1 Taylor 268 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC75526  Ranunculus cymbalaria var. saximontanus Vernon H. Oswald; Lowell Ahart 1999-6-9 9757 Lassen Northeast of Susanville and 4.1 mi south of Biscar Wildlife Management Area on BLM 26030 at the water crossing on Secret Creek. 1347 Comment
  JEPS97783  Ranunculus cymbalaria var. saximontanus Annetta M. Carter 1945-9-30 1723 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  HSC23500  Ranunculus cymbalaria var. saximontanus Bill Wilson 1967-6-30 59 Lassen Slough Point, 2 mi. W across lake from Eagle Lake Biological Station, 10 mi. N of Susanville 1585 Comment
  UC773872  Ranunculus glaberrimus L. R. Short 1936-4-28 S- 338 Lassen Burgess Spring Experiment Range Lassen National Forest 1737 Comment
  UC1608992  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald and Lowell Ahart 1993-5-12 5383 Lassen Forest Rd 32N08 (to Crater Lake) 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, along creek); Pine Creek 1737 Comment
  UC1951076  Ranunculus glaberrimus var. glaberrimus Debra Valov 2009-4-25 2009015 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET10535979  Ranunculus occidentalis Mary Merello 1993-6-28 Merello 749 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC506988  Ranunculus occidentalis George A. Fischer and Irwin H. Johnson 1933-7-12 213 Lassen Lassen National Forest 1722 Comment
  UCD96933  Ranunculus occidentalis 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
  SBBG28521  Ranunculus occidentalis var. ultramontanus M. S. Baker 1952-5-23 Lassen Hwy 36, between Chester and Fredonyer Pass Comment
  CHSC101037  Ranunculus populago John Dittes 2008-5-22 1526 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek. 482 Comment
  CHSC44887  Ratibida columnifera Lowell Ahart; John Thomas Howell 1974-7-9 513 Lassen Near the south-west side of Eagle Lake. 1584 Comment
  CAS-BOT-BC58196  Rhododendron columbianum Brighton C. Cain 1925-8-24 101 Lassen Mt. Lassen Vilcanic National Park, 1 mi. below Drakesbad. 1645 Comment
  CHSC13607  Ribes Lynn R Thomas 1969-4-17 93 Lassen 100 yds up slope w of back of Lassen Memorial Hospital, Susanville. Boundary between T29N and T30N. 1310 Comment
  RSA0115086  Ribes aureum var. aureum Lowell A. 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
  UC1127635  Ribes cereum A. Simontacchi 1940-6-15 882 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA0037147  Ribes cereum J. R. Keck Jr. 1977-7-13 s.n. Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. 1830 Comment
  CHSC84861  Ribes cereum var. cereum L. P. Janeway; B. Castro 2003-10-5 8003 Lassen High Cascade Range. 3.6 km (air) southwest of Bogard Buttes; along Lassen National Forest road 32N09C 0.5 km north of road 32N09. 2020 Comment
  HSC95270  Ribes inerme var. inerme Gordon Leppig 1998-7-12 947 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC726449  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mi e Fredonyer Pass 1706 Comment
  SEINET12216573  Ribes roezlii Unknown 1972-1 286 Lassen 1 mi S of Five Points on Dean's Ridge Rd going to Dean's Meadow Comment
  CAS-BOT-BC186151  Ribes roezlii var. roezlii Brighton C. Cain 1925-8-24 96 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  CAS-BOT-BC186149  Ribes roezlii var. roezlii George W. Gillett 1957-7-26 917 Lassen Butte Lake 1844 Comment
  OBI75884  Ribes velutinum Anthony Baniaga 2011-7-1 414 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  UC1924208  Ribes velutinum Debra Valov 2004-6-8 2004277 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UC1924227  Rorippa curvipes Debra Valov 2004-6-8 2004247 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC10716  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-6-1 Lassen Dixey Mts. Comment
  UC1126739  Rorippa curvisiliqua A. Simontacchi 1940-6-4 806 Lassen 14.8 mi w Harvey Mountain Lookout; Halls Flat Quad., Lassen National Forest Comment
  RSA0065538  Rorippa curvisiliqua Marion P. Harthill 1971-6-20 216 Lassen Susanville. Comment
  CHSC75481  Rorippa sinuata Vernon H. Oswald; Lowell Ahart 1999-6-9 9735 Lassen Hwy. 395 northeast of Susanville and north of Smoke Creek Ranch Rd. at Mud Flat. On the bank between the highway and the playa. 1348 Comment
  UCD115377  Rorippa sinuata Verne Grant; Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting aera on west end of Section 19 on Madeline Plain. Comment
  NY182185  Rorippa sinuata G. Schoolcraft 1983-6-28 1025 Lassen 1341.1 Comment
  RSA702446  Rosa californica L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat. Black Mountains Experimental Forest. 1790 Comment
  JEPS128172  Rosa woodsii M. C. Mahoney, J. A. Nash 2017-8-7 CA 350 -87 Lassen South of Horse Lake. From Susanville take Highway 139 N. Turn right Horse Lake Road (Highway 536). Continue for 5 miles. Population is on the right in a drainage running parallel to the road. Comment
  CHSC12477  Rosa woodsii subsp. ultramontana Carol Weld 1969-6-26 42 Lassen Springs near roadside, 7.8 miles S.W. of Eagle Lake Field Station. 1584 Comment
  CHSC7724  Rosa woodsii subsp. ultramontana Beverley J. Wise 1969-6-1 95 Lassen N.E. city limits of Susanville, Chestnut street at junction with Hwy 139. 1310 Comment
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  RSA647522  Rosa woodsii var. ultramontana Marion P. Harthill 1972-6-16 803 Lassen Litchfield 1311 Comment
  POM90170  Rosa woodsii var. ultramontana Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  CHSC23481  Rubus leucodermis Wayne O. Baum 1971-7-5 71 -84 Lassen E. slope of Gallatin Peak. 2072 Comment
  SEINET11908696  Rubus parviflorus J. Detzer, Sacks 1977-1 11 Lassen ca 2.5 mi SE of Milford, 300 yds E of Laufman Ranger Station, 5 ft E of unimproved USFS road 1372 Comment
  CHSC25904  Rumex K. R. Stern 1967-6-30 2445 Lassen West central side of Eagle Lake. 1554 Comment
  UC1746173  Rumex Annetta M. Carter 1945-9-30 1720 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  CHSC1357  Rumex hymenosepalus M. Anthony 1954-5-1 Lassen Hwy 395 between Susanville and Hallelujah Jct. Comment
  CDA23167  Rumex hymenosepalus Sterling O. Mattoon 1977-5-3 Lassen Highway 395 at North Access Road to Herlong. 0 Comment
  SD64325  Rumex lacustris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on hwy #395 1676 Comment
  CAS-BOT-BC433633  Rumex lacustris M. K. Bellue 1947-9-1 s.n. Lassen Along highway between Doyle and Janesville Comment
  UCR67452  Rumex salicifolius George K. Helmkamp 1990-9-23 G- 14 Lassen north of Ravendale 1677 Comment
  UC1136137  Rumex salicifolius var. lacustris E. Sawyer 1935-6-27 228 Lassen Long Valley Sierraville Quad. 1310 Comment
  UC1745636  Rumex salicifolius var. lacustris Annetta M. Carter 1946-8-18 1776 Lassen S end of Grasshopper Valley, N of Eagle Lake. 1615 Comment
  UC1745691  Rumex salicifolius var. lacustris Annetta M. Carter 1945-9-30 1718 Lassen Sam Webb place near end of Eagle Lake. 1554 Comment
  UC452565  Rumex salicifolius var. lacustris Milo S. Baker Lassen near Eagle Lake Comment
  CHSC66396  Rumex salicifolius var. triangulivalvis Vernon H. Oswald; Lowell Ahart 1996-6-17 7789 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Growing between the trail and Susan River at the Hwy.36 bridge. 1402 Comment
  CAS-BOT-BC434262  Rumex triangulivalvis John Thomas Howell 1934-7-8 12486 Lassen Spalding's, Eagle Lake Comment
  CHSC111165  Rumex triangulivalvis Lowell Ahart; John Dittes 2012-7-9 18302 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
  JEPS121294  Rumex triangulivalvis Lowell Ahart, John Dittes 2013-7-22 18867 Lassen 30 yards S of the man-made pond, about 120 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC109419  Rumex venosus John Thomas Howell 1978-4-19 52865 Lassen Sierra Nevada. Along Highway 395 between Doyle and Milford. Comment
  JEPS29739  Rumex venosus Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8494 Lassen 10 mi s Milford (along U.S. Hwy 395) 1219 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
  SEINET4176394  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  CAS-BOT-BC445671  Sagittaria cuneata L. S. Smith 1918-7-22 1009 Lassen Modoc National Forest. Blue Lake 1874 Comment
  CHSC12427  Sagittaria cuneata Robert W. Severin 1969-6-25 17 Lassen East side of Murrer's Upper Meadow, in irrigation ditch, 2 miles ese from E.L.B.S. 1584 Comment
  JEPS88426  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1996-8-1 8107 Lassen receding shore of the Mountain Meadows Reservoir ne Indian Ole Dam (sw of Westwood); Mountain Meadows Reservoir, ne of Indian Ole Dam 1539 Comment
  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
  UC481924  Salix exigua var. hindsiana Mrs. H. P. Bracelin 1931-6-29 485 Lassen at edge of Pit River McArthur 960 Comment
  CAS-BOT-BC107961  Salix geyeriana John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49220 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  CAS-BOT-BC124634  Salix lemmonii John Thomas Howell 1976-7-20 52016 Lassen along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC124636  Salix lemmonii Hans Leschke 1960-8-5 1700 Lassen Feather Lake 1996 Comment
  CHSC13655  Salix scouleriana E. L. Smith 1971-7-26 987 Lassen At Eagle Lake Field Station ca. 20 mi nw of Susanville. 1615 Comment
  CDA36352  Salsola gobicola B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 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
  CHSC779  Salvia aethiopis V. Holt 1945-6-22 Lassen Dump near Susanville. 1297 Comment
  UC104453  Salvia aethiopis T. Brandegee 1892-6-30 Lassen streets of Susanville Comment
  CDA34340  Salvia aethiopis Anonymous 1987-6-18 Lassen New Pine Creek, along Hwy 395 north into Oregon. 0 Comment
  SEINET7976568  Salvia dorrii M. J. Williams, A. Tiehm, J. Nachlinger 1988-1 88- 27 -1 Lassen Hwy 395 0.4 mile east of Susanville road after turn to Alturas. Comment
  UCLA27615  Salvia dorrii var. dorrii Mrs. H. C. Cantelow 1941-5-22 Lassen 2.5 mi n Secret Valley (C.C.C. Camp on U.S. Hwy 395 to Alturas from Quincy) Comment
  CHSC60277  Sambucus mexicana P. V. Caldwell 1972-6-23 247 Lassen Irrigation ditch at headwaters of Willow Creek, Upper Murer's Meadow, on the bank. Comment
  JEPS88210  Sanguisorba annua Vernon H. Oswald and Lowell Ahart 1996-6-17 7787 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at the Hwy 36 bridge spanning the Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  JEPS947  Sanicula tuberosa G. S. Crew, C. S. Robinson 6/1/1927-7/1/1927 12 Lassen near Westwood Junction (Lassen National Forest, Norval Flat, sw Lassen County); Lassen National Forest, Norval Flat 2051 Comment
  RSA74137  Sanicula tuberosa M. S. Baker 1952-5-23 12426 Lassen Hwy 36 E of Chester Comment
  CHSC115590  Saponaria officinalis Lowell Ahart; John Dittes 2015-7-14 20323 Lassen About 100 yards west of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  JEPS59876  Sarcobatus vermiculatus W. L. Jepson 1918-8-4 7805 Lassen Horse Lake 1554 Comment
  CHSC4601  Sarcodes sanguinea R. Ogren 1967-7-8 1 Lassen Papoose Valley, 2 mi S of Gallatin Beach, Eagle Lake. 1524 Comment
  CAS-BOT-BC466320  Sarcodes sanguinea R. Carter 1967-6-22 536 Lassen 1/4 mi S of Corners on Peans Ridge Rd., on way to Mahogany Lake 1950 Comment
  CHSC91792  Schoenoplectus acutus var. occidentalis L. P. Janeway 2005-8-27 8525 Lassen High Cascade Range. Northwest shore of Eagle Lake; east end of Sandy Beach, west side of Rocky Point. 1550 Comment
  JEPS87446  Scirpus nevadensis Vernon H. Oswald and Lowell Ahart 1993-6-14 5521 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake 1566 Comment
  JEPS11413  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  SDSU11023  Scrophularia lanceolata D. F. Howe 1962-8-2 3923 Lassen Warner Mtns, Modoc National Forest. 1829 Comment
  HSC82251  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6010 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  SEINET10499152  Scutellaria nana Mary Merello 1993-6-28 Merello 750 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1537581  Scutellaria nana Gordon H. True Jr. 1936-6-25 540 Lassen e of Harvey Valley Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  UC1609093  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-7-8 5653 Lassen on se edge of Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi n of Hwy 44) 1709 Comment
  UC1609176  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-6-28 5595 Lassen e of Poison Lake (Harvey Valley Rd. (33N02), 2.0 mi n of Hwy 44, between Grays Valley and Harvey Valley); Harvey Valley Rd. 1734 Comment
  UC773951  Scutellaria nana L. R. Short, J. Warren 1936-6-23 S 445 Lassen Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1809 Comment
  CAS-BOT-BC46020  Sedum lanceolatum Clare B. Hardham 1971-8-22 18425 Lassen Diamond Mountain 2346 Comment
  CAS-BOT-BC46021  Sedum lanceolatum John Thomas Howell; Gordon True; Wayne Dakan 1974-7-30 50670 Lassen Summit ridge of Diamond Mountain 2346 Comment
  CAS-BOT-BC363325  Senecio aronicoides Jean Langenheim 1957-6-26 4372 Lassen Northwest Said Valley, north-eastern part of Lassen County Comment
  CHSC23475  Senecio clarkianus Wayne O. Baum 1971-7-14 71 -61 Lassen N. slope of Gallatin Peak. 2011 Comment
  CHSC20308  Senecio hydrophiloides S. Villard 1973-7-7 63 Lassen Meadow, off county dirt road, 5 mi from Red-Rock Lookout. 2133 Comment
Read comments
Apr 29 2013
  CAS-BOT-BC363686  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen About 4 miles east of Westwood 1432 Comment
  UC1594646  Senecio hydrophilus Vernon H. Oswald and Lowell Ahart 1992-7-16 5128 Lassen Feather Lake on s side Bridge Creek Spring Rd. ((County Rd. 112, Forest Rd. 31N06), ca 0.4 mi e of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02) between Old Station and Susanville); Feather Lake 1749 Comment
  RSA0012449  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen east of Westwood, the margin bordered with sagebrush, where a tongue of Upper Sonoran protrudes into the Transition Life Zone. Comment
  CAS-BOT-BC363856  Senecio integerrimus var. exaltatus Doris Kildale Gillespie 1930-5-13 9388 Lassen Between Susanville and Janesville Comment
  RSA0124944  Senecio integerrimus var. exaltatus E. K. Balls 1950-5-19 14 .772 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  JEPS79212  Senecio serra var. serra L. R. Heckard with R. C. Bacigalupi 1980-6-12 5253 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  CAS-BOT-BC364254  Senecio triangularis Clare B. Hardham 1971-8-22 18409 Lassen Diamond Mountain. Aspen Swamp, North slope Comment
  CHSC100133  Shepherdia argentea L. P. Janeway 2008-8-2 9526 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Tanch Road 1.8 km west of the CA-NV line. 1349 Comment
  UCR18733  Sidalcea glaucescens Frank C. Vasek 1975-7-11 750711- 14 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  UCR18792  Sidalcea glaucescens Frank C. Vasek 1975-7-11 750711- 33 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CHSC30043  Sidalcea oregana Cindy Prouty 1978-7-27 7 Lassen Little Antelope Valley, W of Eagle L. 1792 Comment
  HSC82270  Sidalcea oregana subsp. oregana Thomas W. Nelson, Jane Nelson 1980-7-6 5996 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC506975  Sidalcea oregana subsp. oregana George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Lassen Forest , Patterson Flat 1737 Comment
  UC871518  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen 1 mi w Bieber (overflow of the Pitt River); Pitt River, w of Bieber Comment
  POM260336  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA719898  Sidalcea oregana subsp. oregana Michael A. Vincent, K. Levings 2006-7-29 12906 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  UC1537657  Sidalcea oregana subsp. oregana Gordon H. True Jr. 1937-7-10 789 Lassen rocky mesa near Skeedaddle; near Skeedaddle 1493 Comment
  JEPS28444  Silene bernardina George W. Gillett 1957-8-28 928 Lassen on trail to Widow Lake above junction with Snag Lake Trail (upper end of butte Lake Lassen Volcanic National Park); Lassen Volcanic National Park, upper end Butte Lake 1859 Comment
  UC1523760  Silene bernardina Gary Schoolcraft 1982-6-23 727 Lassen Ft. Sage Mts. 1828 Comment
  UC506918  Silene bernardina George A. Fischer and Irwin H. Johnson 1933-7-14 F- 257 Lassen Lassen Forest 1783 Comment
  UC1523715  Silene douglasii Gary Schoolcraft 1981-7-15 512 Lassen near top Fredonyir Peak; near top Fredonyir Peak 2346 Comment
  UC1137882  Silene lemmonii H. P. Hagge 1929-9-17 36 Lassen Logan Mtn. Eagle Lake Quad., Logan Mtn. 1828 Comment
  CHSC4836  Silene nuda R. Carter 1967-7-16 616 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
  CHSC89312  Silene nuda G. Douglas Barbe 1974-8-20 1936 Lassen Upper Long Valley. Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UC1137897  Silene nuda E. Sawyer 1935-7-8 274 Lassen 7 3/4 mi ene Loyalton; Sierraville Quad., ene of Loyalton Comment
  CHSC5235  Sisymbrium altissimum L. Harman 1946-6-26 Lassen Webb's, Eagle Lake. 1584 Comment
  UC1032501  Sisyrinchium bellum A. Simontacchi 1940-6-15 863 Lassen 2.3 mi ssw of Black Mountain; Lassen National Forest 1798 Comment
  UC4218  Sisyrinchium bellum J. Burtt Davy Jun 17 1897-Jun 24 1897 3302 Lassen Tule Confederacy Adobe Meadows; Honey Lake Valley Comment
  SBBG128753  Sisyrinchium bellum L. Ahart, J. Dittes 2008-6-20 14964 Lassen ca. 10 yards W of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CDA38565  Sium F. A. Taylor 1939-7-5 s.n. Lassen Bieber. 0 Comment
  CHSC106203  Solanum physalifolium var. nitidibaccatum Lowell Ahart; John Dittes 2010-8-31 17138 Lassen 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. 1276 Comment
  NY820340  Solanum triflorum J. T. Howell 1973-7-10 49797 Lassen Susanville, in city park 1295 Comment
  HSC21315  Solanum triflorum D. E. Anderson 1962-8-6 2331 Lassen Lake at foot of Tule Mtn. Comment
  CHSC65299  Solidago velutina subsp. californica Vernon H. Oswald 1995-8-21 7207 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the W side of the lake. 1859 Comment
  JEPS103173  Solidago velutina subsp. californica G. Schoolcraft 1994-8-29 2426 Lassen About 1 mile west of Susanville up Piute Creek 1341 Comment
  UC1583971  Sonchus asper G. Schoolcraft 1990-7-31 2117 Lassen along Hwy 299 between Bieber and Nubieber 1249 Comment
  CAS-BOT-BC438841  Sparganium natans Andrew Townesmith; Karen M. Meyer 2007-7-22 844 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. 1981 Comment
  UC2042785  Sphaeromeria cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7192 Lassen Skeedaddle Mountains on NE side of Honey Lake, on S side of Hot Springs. Comment
  CHSC93240  Sphaeromeria potentilloides var. potentilloides John Dittes; Scott Chamberlain 2004-6-28 1013 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-miles east of Plumas County line; meadow. 1445 Comment
  JEPS103181  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  UC1567385  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 1989-5-3 1865 Lassen s Karlo (n end Secret Valley); n end Secret Valley 1341 Comment
  UC13098  Spiraea densiflora M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CAS-BOT-BC149623  Spiraea douglasii Louella Bass 1973-6-17 EV - 118 Lassen Elysian Valley 1325 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
  SEINET10737171  Spiraea douglasii Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 840 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  SEINET7707741  Spiraea douglasii C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  HSC95268  Spiranthes romanzoffiana Gordon Leppig, J. Cromwell 1997-7-26 601 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC65281  Spirodela polyrhiza Vernon H. Oswald 1995-8-21 7213 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. At the SW corner of the lake. 1859 Comment
  CHSC41843  Stachys ajugoides var. rigida P. V. Caldwell 1972-7-8 262 Lassen Eagle Lake. 1 mile from the forest road toward Papoose Meadows on Papoose Creek. Comment
  CHSC75482  Stanleya viridiflora Vernon H. Oswald; Lowell Ahart 1999-6-9 9744 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  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
  CHSC76747  Stellaria longipes var. longipes L. P. Janeway 1999-9-5 6577 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. On south edge of pond. 1900 Comment
  UC1523750  Stellaria longipes var. longipes Gary Schoolcraft 1981-6-25 484 Lassen e fork Willard Creek 1584 Comment
  JEPS94472  Stenotus acaulis Vernon H. Oswald and Lowell Ahart 1997-5-27 8507 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
  CAS-BOT-BC375307  Stephanomeria exigua subsp. coronaria John Thomas Howell 1934-6-10 11847 Lassen 4 miles south of Omira Comment
  JEPS17401  Stephanomeria exigua subsp. exigua Rimo Bacigalupi and G. T. Robbins 1955-7-21 5425 Lassen In drainage of Rush Creek, S of the Smoke Creek Ranch Road, 1.3 mi E of the Nevada State line and 17.5 mi E of U.S. Highway 395. 1341 Comment
  UC584294  Stephanomeria tenuifolia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2207 Lassen just w Susanville (on Inspiration Point) 1280 Comment
  UCR244065  Stipa comata Jim Andre, G. L. Clifton 1993-6-9 19691 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UCR119113  Stipa elmeri Beecher Crampton 1954-7-5 2064 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  UC1140903  Stipa exigua L. D. Whitney 1935-6-16 3272 Lassen base Crater Mt. Comment
  UCR119159  Stipa nevadensis Beecher Crampton 1960-6-18 5729 Lassen Warner Mountains, Southern edge of mountains, 1.25 miles north of Blue Lake in vicinity of Blue Lake Ranch. 1982 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
  NY215290  Streptanthus cordatus D. B. Dunn 1971-6-2 17787 Lassen 6 mi N of Hallelujah Jct. on U.S. Hwy 395. 1402.1 Comment
  UC1184065  Streptanthus tortuosus var. orbiculatus Jean Langenheim 1957-6-26 4381 Lassen from area adjacent to 1937 chaparral quadrat (ne part of Lassen Co.); Northwest Said Valley Comment
  SEINET8501999  Streptopus amplexifolius C. G. Gulling 1905-1 1545 Lassen Big Meadows. Comment
  POM102724  Suaeda moquinii Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC110305  Suaeda nigra L. P. Janeway; B. Castro 2012-7-2 10925 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CHSC99142  Swertia albicaulis var. albicaulis Lowell Ahart; John Dittes 2008-6-19 14881 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
  CAS-BOT-BC269699  Symphoricarpos mollis G. Schoolcraft 1997-6-24 2604 Lassen Doyle Grade W of Doyle 1706 Comment
  CAS-BOT-BC245874  Symphoricarpos rotundifolius T. S. Brandegee 1892-6-26 s.n. Lassen Milford Comment
  CHSC67077  Symphoricarpos rotundifolius var. rotundifolius Jeanne Boze 1981-6-12 120 Lassen 1/4 mi. south of Eagle Lake Field Station. 1615 Comment
  HSC93475  Symphoricarpos rotundifolius var. rotundifolius Gordon Leppig, Tony LaBanca 1998-7-13 964 Lassen Modoc National Forest, Blue Lake Ranch. 1799 Comment
  JEPS5932  Symphoricarpos rotundifolius var. rotundifolius Frances D. Payne 1929-7-12 84 Lassen ridge above Lost Lake (se extremity of Warner Mountains); Warner Mountains 2499 Comment
  UC1143049  Symphyotrichum ascendens L. R. Short 1936-8-24 S- 498 Lassen Burgess Spring Experimental Range Lassen National Forest, Burgess Spr. Exp. Range 1792 Comment
  CAS-BOT-BC97605  Symphyotrichum campestre James Jokerst 1983-7-23 1867 Lassen Grasshopper Valley Quad. Near Madeline Plains 1614 Comment
  CAS-BOT-BC98929  Symphyotrichum foliaceum var. parryi G. Schoolcraft 1994-7-6 2359 Lassen About 1 mile west of Boot Lake 204 Comment
  CAS-BOT-BC97917  Symphyotrichum frondosum John Thomas Howell 1934-7-8 12508 Lassen [Spalding's] Spalding, Eagle Lake Comment
  CHSC113936  Symphyotrichum spathulatum Lowell Ahart 2014-8-20 19720 Lassen All over the meadow, 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. 1894 Comment
  UCD18966  Symphyotrichum spathulatum Raymond D. Ratliff 1965-8-5 46 Lassen Lassen National Forest, Gooch Valley Allotment, Mosquito Flat (Gooch V. 70-1). 1889 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
  CHSC108012  Taraxacum officinale Lowell Ahart; John Dittes 2011-6-20 17490 Lassen About 30 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
  CHSC5219  Taraxacum officinale J. Wolf 1946-6-23 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  UC1776673  Taraxia subacaulis G. Schoolcraft 1993-6-10 2288 Lassen N of Clark's Valley Road E of Red Rock Lake 1828 Comment
  CHSC36492  Taraxia tanacetifolia Theresa Costa 1982-6-4 34 Lassen Ca. 3/4 mi n Murrers Upper Meadow. Comment
  CHSC6193  Taraxia tanacetifolia W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 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
  SBBG20782  Taraxia tanacetifolia A. I. Richardson 1961-5-31 11 Lassen near Seaid Valley Reservoir Comment
  UC1122295  Taraxia tanacetifolia A. Simontacchi 1940-6-8 830 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quadrangle Comment
  UC2027202  Taraxia tanacetifolia Anthony Baniaga 2011-6-10 319 Lassen Along highway 395 ca. 6.6 mi S of Karlo Rd. quadrangle. Comment
  UC20508  Taraxia tanacetifolia Mrs. C. C. Bruce June 1898 2203 Lassen Susanville Comment
  UC972204  Taraxia tanacetifolia Milo S. Baker 1952-5-23 12420 Lassen Hwy 36 e Chester Comment
  UCD107052  Taraxia tanacetifolia R. Carter 1967-6-23 547 Lassen Upper part of Murrer's Meadow. 1584 Comment
  CDA18275  Tetradymia canescens G. D. Barbe 1974-8-2 1941 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  HSC103587  Tetradymia canescens Thomas W. Nelson, Jane Nelson 1981-7-17 6734 Lassen Along State Route 395, 22 mi. S of Susanville at milepost 46.80 Comment
  UC1562341  Tetradymia canescens Vernon Oswald and Lowell Ahart 1990-7-25 4398 Lassen 2.2 mi w Hwy 395 (intersection of Hwy 70 and Scott Rd) 1463 Comment
  UC501445  Tetradymia canescens Frank W. Peirson 1932-7-20 10354 Lassen 20 mi se Susanville 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
  CHSC31084  Tetradymia glabrata J. S. White 1980-4-14 125 Lassen 3 mi ne of Wendel. 1371 Comment
  OBI75883  Tetradymia glabrata Anthony Baniaga 2011-7-1 416 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1442 Comment
  UC585130  Tetradymia glabrata E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1737 Lassen mountain above Red Rock 1420 Comment
  CAS-BOT-BC340100  Tetradymia spinosa Elmer I. Applegate 1934-5-4 8935 Lassen About 15 miles south of Ravendale Comment
  CHSC31075  Tetradymia spinosa J. S. White 1980-4-14 117 Lassen 1 mi ne of Wendel. 1295 Comment
  UCD55271  Tetradymia spinosa Ellen Dean 2006-5-15 3081 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
  CAS-BOT-BC399902  Thalictrum sparsiflorum George W. Gillett 1957-7-24 897 Lassen Lassen Volcanic National Park. Cameron Meadow 1950 Comment
  RSA0026216  Thelypodium crispum John F. Emmel 1997-6-9 1504 Lassen Along Hwy. 395, 4.2 road miles SE of Ravendale, at south end Madeline Plains. 1622 Comment
  JEPS81054  Thelypodium flexuosum G. Schoolcraft 1980-5-16 Lassen se of Wendel 1219 Comment
  UCD55274  Thelypodium flexuosum Ellen Dean 2006-5-15 3084 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
  CAS-BOT-BC88086  Thelypodium howellii subsp. howellii Arnold Tiehm; Gary Schoolcraft; Jan Nachlinger 1984-6-25 8826 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81. 1828 Comment
  UC1587065  Thelypodium integrifolium G. Schoolcraft 1991-8-26 2226 Lassen w of Robber's Roost 1341 Comment
  UC2031889  Thelypodium integrifolium subsp. complanatum Barbara L. Wilson with Richard Brainerd, Danna Lytjen, Bruce Newhouse and Nick Otting 2004-8-27 11183 Lassen Grazing exclosure at Phone Spring, property of the Bureau of Land Management. Comment
  CAS-BOT-BC207182  Thinopyrum intermedium subsp. intermedium John Thomas Howell 1975-7-23 551396 Lassen Susanville - Sierra Nevada 1295 Comment
  CAS-BOT-BC193471  Thinopyrum ponticum T. C. Fuller 1963-7-15 10887 Lassen S. of road to Little Valley 2.9 mi. SE of Pittville Comment
  CAS-BOT-BC193473  Thinopyrum ponticum T. C. Fuller 1963-7-16 10920 Lassen Head of Secret Valley, W side of Hwy 395 to Litchfield, 14.1 mi. S of Ravendale Comment
  CHSC14173  Thlaspi arvense K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-23 5838 Lassen Ca. 1 mi se of Ravendale on w side of Hwy. 395. 1618 Comment
  CHSC75484  Thlaspi arvense Vernon H. Oswald; Lowell Ahart 1999-6-9 9753 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. Along a wash. 1347 Comment
  JEPS124377  Thlaspi arvense Lowell Ahart, John Dittes 2015-7-13 20309 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC71126  Thysanocarpus curvipes Vernon H. Oswald; Lowell Ahart 1998-5-22 9129 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Along a streamlet. 1463 Comment
  JEPS90108  Tragopogon dubius Dean W. Taylor 1974-6-14 3706 Lassen Poison Lake, on Highway 44 ca. 2 miles west from the junction with Pittville Road. 914 Comment
  CAS-BOT-BC377166  Tragopogon pratensis John Thomas Howell 1955-7-19 30824 Lassen East side of Beckwourth Pass 1493 Comment
  JEPS127266  Trichostema oblongum Lowell Ahart, John Dittes 2016-7-13 21122 Lassen 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  CHSC84439  Trichostema simulatum Lowell Ahart 2003-8-17 10514 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
  HSC97190  Trichostema simulatum L. Ahart 2003-8-17 10514 Lassen E side of Hwy. 36, 1/4 mi. SW of the Susan River, 8 air mi. SW of Susanville 1434 Comment
  UCD169305  Trichostema simulatum Lowell Ahart 2003-8-17 10514 Lassen About 8 miles (air) southwest of Susanville, about 1/4 mile southwest of the Susan River, on the east side of Highway 36, on the west side of a paved road. 1433 Comment
  CAS-BOT-BC219011  Trifolium andersonii subsp. andersonii Jean Langenheim 1957-6-26 4369 Lassen Northwest Said Valley, northeastern part of Lassen County. In silty area Comment
  CAS-BOT-BC219013  Trifolium andersonii subsp. andersonii Jas. Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-24 4114 Lassen Between Eagle Lake and Susanville on state hwy. 139 Comment
  CHSC65311  Trifolium cyathiferum Vernon H. Oswald 1995-8-14 7187 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. 1645 Comment
  CHSC99259  Trifolium cyathiferum Lowell Ahart; John Dittes 2008-6-22 15025 Lassen On the sides of a small drainage, on the west side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  OBI75890  Trifolium cyathiferum Anthony Baniaga 2011-8-16 498 Lassen Lassen Natl Forest. Along F.S. 10, ca. 1 mi NE of Cummings Spring. Red Cinder quad. T30N R8E sec 7SE of SW 1935 Comment
  JEPS127180  Trifolium eriocephalum subsp. cusickii Lowell Ahart, John Dittes 2016-7-15 21231 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC117267  Trifolium eriocephalum var. cusickii Lowell Ahart; John Dittes 2016-7-15 21231 Lassen About 80 yards west 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
  UCSC011037  Trifolium geminiflorum Lowell Ahart, John Dittes 2016-7-13 21120 Lassen West edge of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles east of Bieber, 7.3 miles southwest of Adin, hills at the southern slope of Big Valley 1289 Comment
  UCSC011166  Trifolium geminiflorum Lowell Ahart, John Dittes 2016-7-15 21233 Lassen About 10 yards west 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
  JEPS126525  Trifolium hybridum Lowell Ahart, John Dittes 2016-6-7 21019 Lassen On the west edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC80412  Trifolium kingii var. productum Mrs. R. M. Austin 1880-1 Lassen Mt. Dyer Comment
  CHSC25903  Trifolium longipes subsp. hansenii K. R. Stern 1967-6-25 2401 Lassen Meadow on road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  JEPS33203  Trifolium longipes subsp. hansenii Frances D. Payne 1929-7-12 102 Lassen Upper Silver Creek, northeastern Lassen County. 2286 Comment
  UCSC011017  Trifolium longipes subsp. hansenii Lowell Ahart, John Dittes 2016-7-15 21230 Lassen About 80 yards west of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber; 41.183167 -121.036972 1268 Comment
  CHSC107995  Trifolium longipes var. nevadense Lowell Ahart; John Dittes 2011-6-20 17478 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  RSA0037000  Trifolium longipes var. nevadense Lowell A. Ahart, John Dittes 2008-6-20 14955 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
  RSA716039  Trifolium longipes var. nevadense L. Ahart 2005-6-1 11867 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CHSC7673  Trifolium macrocephalum Beverley J. Wise 1969-4-17 65 Lassen 1 mi. north on Hwy 139. 1341 Comment
  UCD111342  Trifolium macrocephalum Earl Coke 1934-1 s.n. Lassen location unknown. Comment
  UC1025070  Trifolium monanthum var. monanthum Leo Whitney 1934-7-24 1502 Lassen ca 7-8 mi sw Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen National Forest 1737 Comment
  CAS-BOT-BC230742  Trifolium productum A. M. Vollmer; L. Beane 1953-7-1 87 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS32136  Triglochin maritima J. B. Davy June 1897 3394 Lassen Honey Lake Valley Comment
  UC486  Triglochin maritima J. Burtt Davy Jun 17 1897-Jun 24 1897 3394 Lassen Honey Lake Valley; Amedee Comment
  CHSC77200  Trimorpha lonchophylla G. Schoolcraft 1999-6-29 2848 Lassen E. edge of Madeline Plains about 9 mi. ne of Ravendale, CA. 1615 Comment
  CAS-BOT-BC199574  Trisetum canescens John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49437 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC99111  Triteleia hyacinthina Lowell Ahart; John Dittes 2008-6-20 14904 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
  SD131701  Triteleia hyacinthina Arnold Tiehm, Jan Nachlinger, Margaret Williams 1988-6-2 11705 Lassen East side of Snowstorm Mountain, 18.1 road miles north of the Wendel Road on Highway 395 from Susanville to Alturas. Growing along moist draws. 1402 Comment
  UC421857  Triteleia hyacinthina J. Burtt Davy Jun 17 1897-Jun 24 1897 3386 Lassen Adobe Meadows Honey Lake Valley Comment
  SEINET3890348  Triteleia hyacinthina Arnold Tiehm, Jan Nachlinger; Margaret Williams 1988-6-2 11705 Lassen East side of Snowstorm Mt., 18.1 road miles north of Wendel road on highway 395 from Susanville to Alturas.; 0 1402 Comment
  SEINET3125312 Image available Triticum aestivum Richard R. Halse 2006-1 6991 Lassen Modoc National Forest, along Blue Lake Road north of Blue Lake, about 15 miles ESE of Likely. 1860 Comment
  CHSC21477  Tsuga mertensiana 1975-7-16 840 Lassen On trail between Echo Lake and Summit Lake, Lassen National Park. 2133 Comment
  NY500467  Ulmus pumila J. T. Howell 1978-4-20 52869 Lassen Susanville 1296.9 Comment
  UC1924206  Urtica dioica Debra Valov 2005-8-19 2005217 Lassen Eagle Lake; Hwy 139. Mi. marker 25 1554 Comment
  UC35006  Utricularia macrorhiza J. Burtt Davy Jun 17 1897-Jun 24 1897 3339 Lassen w. end of lake Honey Lake Valley 1219 Comment
  UCD170232  Utricularia macrorhiza K. M. Meyer; A. Townesmith 2007-7-21 148 Lassen Lassen National Forest. 1.3 mile on Road 10 to Silver Lake off Road 110. 1963 Comment
  SJSU3301  Utricularia macrorhiza H. L. Buckalew 1961-7-6 Lassen Warner Mts, upper end of Blue L 1828 Comment
  CHSC96702  Utricularia vulgaris Gordon Leppig; J. Cromwell 1997-7-27 612 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  SD7779  Vaccinium uliginosum Mrs. R. M. Austin 1882-1 Lassen Willow Lake Comment
  SEINET8506752  Veratrum californicum C. G. Gulling 1905-1 1540 Lassen Big Meadows. Comment
  CAS-BOT-BC530502  Veratrum californicum Clare B. Hardham 1971-8-22 18371 Lassen near snow banks 2346 Comment
  CHSC4925  Veratrum californicum var. californicum L. G. Bennett 1967-7-14 179 Lassen Beside road, 3 miles East of Silver Lake. 1828 Comment
  CHSC5029  Veratrum californicum var. californicum L. B. Barlow 1967-7-14 118 Lassen 5 mi. S. Silver Lake Rd., along Susan River, W. side Calif. State Highway 44. 1828 Comment
  CHSC117282  Verbascum blattaria Lowell Ahart; John Dittes 2016-7-15 21227 Lassen About 10 yards west of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1278 Comment
  CHSC23507  Verbascum thapsus Wayne O. Baum 1971-7-16 71 -66 Lassen S. slope of Gallatin Peak. 2011 Comment
  SEINET9186959  Verbena bracteata G. Schoolcraft 1998-8-4 2800 Lassen Along Hwy 395 berm. 1341 Comment
  CHSC5073  Veronica D. L. Stites 1967-7-1 105 Lassen 3 1/2 mi se of Eagle Lake Biology Station, Upper Murrer's Meadow. 1524 Comment
  UC1012181  Veronica americana Francis W. Pennell 1940-6-10 25775 Lassen 3 mi e of Westwood (Route 36) 1584 Comment
  CHSC99506  Veronica arvensis Lowell Ahart; John Dittes 2008-6-20 14925 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
  JEPS114654  Veronica arvensis Lowell Ahart, John Dittes 2008-6-20 14925 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
  JEPS124371  Veronica arvensis Lowell Ahart, John Dittes 2015-7-13 20321 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA715625  Veronica arvensis L. Ahart, John Dittes 2005-6-1 11903 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
  RSA523846  Veronica catenata L. R. Heckard, Peter Rubtzoff 1971-8-3 2702 Lassen 1.3 miles west of Pit River bridge at Bieber. Along Pit River overflow at bridge 7-03. 1220 Comment
  UC1567435  Veronica peregrina subsp. xalapensis G. Schoolcraft 1989-7-24 1993 Lassen along n shore of Said Valley Reservoir Said Valley Reservoir 1630 Comment
  POM28600  Vicia americana var. americana Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  JEPS23987  Viola adunca W. L. Jepson 1910-6-10 4110 Lassen East Fork King Creek on Cinder Cone Trail; King Creek 2133 Comment
  CHSC4939  Viola adunca var. adunca W. Lessig 1967-7-20 20 Lassen On rd to Silver Lake. 1828 Comment
  UC1121558  Viola beckwithii A. Simontacchi 1940-5-17 731 Lassen 5.7 mi ssw of Patterson Mountain; Lassen National Forest 1706 Comment
  UCD110898  Viola lobata H. Frederick 1925-7-28 s.n. Lassen Mt. Lassen. Comment
  SEINET9261634  Viola nephrophylla Mrs. C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  HSC21869  Viola nephrophylla Jim Vaughn 1956-8-11 Lassen Horseshoe Lake, Lassen Volcanic National Park 1982 Comment
  CHSC101027  Viola praemorsa subsp. linguifolia John Dittes 2008-5-22 1537 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. 483 Comment
  UC1763464  Viola praemorsa subsp. linguifolia Milo S. Baker and F. P. Nutting Jul 1894 1894 Lassen hills N of Dixie Mountains Comment
  CHSC23555  Viola purpurea subsp. dimorpha W. O. Baum 1971-6-21 22 Lassen E slope of Gallatin Peak. 1920 Comment
  CHSC5926  Viola purpurea subsp. dimorpha J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Mt. Fredonyer. 2133 Comment
  CHSC7741  Viola purpurea subsp. dimorpha Beverley J. Wise 1969-4-21 121 Lassen 4 mi. south of Susanville on Las. Co. Rd. 204 (Gold Run Road). 1310 Comment
  POM85345  Viola purpurea subsp. venosa Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  SD109520  Vulpia microstachys var. pauciflora John R. Reeder, Charlotte G. Reeder 1981-5-20 7348 Lassen 3.5 km NNW of Janesville. Above Long Valley, near highway 1250 Comment
  CHSC93659  Vulpia myuros var. hirsuta Lowell Ahart; John Dittes 2005-6-2 11976 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
  JEPS107847  Vulpia myuros var. hirsuta Lowell Ahart, John Dittes 2005-6-1 11914 Lassen Long Valley, on the north side of Scott road, east side of the railroad underpass, 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
  RSA715994  Vulpia myuros var. hirsuta L. Ahart, John Dittes 2005-6-2 11976 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  UC1035999  Wyethia mollis Helen K. Sharsmith 1955-6-22 4498 Lassen Five miles beyond Blue Lake on road to Likely, Warner Mountains, Modoc National Forest. 1767 Comment
  UCD32664  X Pseudelymus saxicola Beecher Crampton 1954-7-5 2062 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UC1099962  Zannichellia palustris Malcolm A. Nobs and S. Galen Smith 1949-8-10 1476 Lassen 1 mi. n. Doyle (banks of Long Creek, Honey Lake Valley); Honey Lake Valley, Long Creek Comment
  CAS-BOT-BC454212  Zannichellia palustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13257 Lassen Along United States Highway 395, 7.1 miles west of Standish Comment
  UC773858  Zigadenus paniculatus L. R. Short and J. Warren 1936-6-12 S- 434 Lassen Burgess Spring Experiment Range Lassen Forest, (Lassen National Forest?) 1844 Comment
  CAS-BOT-BC533048  Zigadenus paniculatus Doris Kildale Gillespie 1930-5-15 9384 Lassen 5 miles west of Susanville Comment



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