Search Results — 2000 specimen records retrieved (1594 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
  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
  OBI76923  Acer glabrum var. torreyi Anthony Baniaga 2011-7-10 441 Lassen Lassen Natl forest. E side of Diamond Mtn, along 28N64. Diamond Mtn quad t29N R11E sec 3 NW of NW 2012 Comment
  CHSC6285  Achillea millefolium R. Clicquennoi 1967-7-1 14 Lassen 16 mi n of Susanville, Calif. Highway 139. 1645 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
  CHSC7697  Achnatherum hymenoides Beverley J. Wise 1969-5-16 134 Lassen 18 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd 215. 1493 Comment
  RSA647518  Achnatherum hymenoides Marion P. Harthill 1972-6-16 777 Lassen Doyle 1372 Comment
  RSA716057  Achnatherum hymenoides L. Ahart, John Dittes 2005-6-2 11996 Lassen Long Valley, about 41/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1428 Comment
  UC40031  Achnatherum lemmonii M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  UCD37479  Achnatherum nevadense Beecher Crampton 1960-6-18 5729 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UCD51066  Achnatherum occidentale subsp. californicum Beecher Crampton 1960-6-18 5729 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UC60152  Achnatherum occidentale subsp. occidentale J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  CAS-BOT-BC218611  Achnatherum occidentale subsp. pubescens John Thomas Howell 1974-7-10 50519 Lassen Janesville, at the cemetery, Sierra Nevada 1295 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
  UC1137656  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 F 199 Lassen Grass Valley Lassen National Forest 1696 Comment
  UCD32655  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2051 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51216  Achnatherum occidentale subsp. pubescens R. Tofsrud 1947-7-1 222 Lassen 12 mi. E. of Madeline. Comment
  CHSC29880  Achnatherum thurberianum Robin L. Ondricek 1978-6-8 47 Lassen Ridge E of Lower Dry Lake. 1798 Comment
  SEINET235298 Image available Achnatherum thurberianum R. B. Turner 1980-5-18 Lassen Hwy 139 1 miles N of Susanville. 1463 Comment
  UC1024911  Achnatherum thurberianum Leo Whitney 1935-6-25 3372 b Lassen ca 13 mi w of upper end Eagle Lake; Ashurst Mountain Comment
  UC1031349  Achnatherum thurberianum Leo Whitney 1935-6-18 3267 Lassen 13 mi w Eagle Lake; Lassen National Forest, Ashurst Mountain 1584 Comment
  UCD32677  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen Lassen County, 7 miles north of Madeline, along US highway 395, roadside. 1524 Comment
  CAS-BOT-BC218010  Achnatherum thurberianum Clifton F. Smith 1964-6-25 8566 Lassen On road from Ozen to Lockwood Valley watershed, 0.5 mile from the latter near summit, Cuyama Valley drainage 1645 Comment
  CAS-BOT-BC217993  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  UCD51301  Achnatherum webberi Beecher Crampton 1954-7-6 2074 Lassen Along US Hwy 395, 15 miles south of Ravendale. 1676 Comment
  CHSC117295  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2016-7-13 21119 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber , 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC467713  Aconitum columbianum Franklin P. Nutting 1900-7-2 Lassen Pine Creek Comment
  CHSC117525  Acroptilon repens Lowell Ahart; John Dittes 2016-7-13 21103 Lassen Sides of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC391607  Actaea rubra John Thomas Howell; Gordon H. True 1973-8-1 50164 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  OBI76928  Adonis aestivalis Anthony Baniaga 2011-6-10 323 Lassen Lassen/Modoc. Along hwy 299 ca 0.25 mi E of County Rd 75 quad. 1332 Comment
  CHSC4853  Agastache parvifolia R. Carter 1967-7-13 584 Lassen On the s side of road to Eagle Lake Biology Station and Willow Creek. 1584 Comment
  CHSC60832  Agastache parvifolia Vernon H. Oswald; Lowell Ahart 1993-6-28 5619 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  JEPS28682  Agastache parvifolia George W. Gillett 1957-7-26 909 Lassen along e shore Butte Lake (Butte Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Butte Lake 1859 Comment
  JEPS85818  Agastache parvifolia Roy E. Buck 1989-10-5 1419 Lassen wnw-facing slope of ridge overlooking n end Eagle Lake (ca 1.8 air km sw of Fredonyer Paek summit, 28 air km n of Susanville); overlooking n end Eagle Lake, sw of Fredonyer Peak 2115 Comment
  JEPS87414  Agastache parvifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5619 Lassen e Poison Lake (n of Hwy 44 along Rd 33N47 at the ne end of Little Harvey Valley, between Champs Flat and Harvey Valley, bordering Pine Creek); ne end of Little Harvey Valley, Pine Creek 1737 Comment
  SEINET10814664  Agastache parvifolia Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44. 1971 Comment
  CAS-BOT-BC30238  Ageratina occidentalis George Wilson Gillett 1957-7-26 904 Lassen Butte lake, point of rocks west of outlet and above trail 1844 Comment
  UC468891  Agoseris X dasycarpa J. Burtt Davy Jun 17 1897-Jun 24 1897 3404 Lassen Chat Honey Lake Valley, Long Valley Comment
  CHSC71219  Agoseris glauca var. laciniata Vernon H. Oswald; Lowell Ahart 1998-6-4 9142 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  RSA0009531  Agoseris grandiflora Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  JEPS118267  Agoseris heterophylla Lowell Ahart, John Dittes 2011-6-20 17485 Lassen About 15 yards west of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  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
  CAS-BOT-BC13412  Agoseris retrorsa A. A. Heller 1940-5-22 15644 Lassen Hill above Westwood Cemetary 1524 Comment
  UC1136778  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  SEINET13680062  Agropyron desertorum J. R. Reeder, C. G. Reeder 1981-5-20 7350 Lassen 3.5 km NNW of Janesville. above Long Valley 1250 Comment
  UCD52428  Agrostis exarata L. Whitney 1933-8-2 2152 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 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-BC139680  Agrostis gigantea Clare B. Hardham 1969-8-28 17427 Lassen Sierra Nevada. West of Janesville. Comment
  UCD51747  Agrostis gigantea John Thomas Howell 1975-7-23 51401 Lassen Sierra Nevada. Susanville. 1295 Comment
  CAS-BOT-BC139295  Agrostis idahoensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49523 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UCD53173  Agrostis pallens L. Whitney 1933-8-7 2194 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  RSA87452  Agrostis scabra F. W. Peirson 1926-6-22 6808 Lassen margin of Boiling Lake, Mt. Lassen National Park Comment
Read comments
Apr 23 2013
  UCD53299  Agrostis scabra L. Whitney 1933-8-15 s.n. Lassen Meadow near Sheepshead. Comment
  UCD108003  Agrostis stolonifera Tim Kuhn 2006-7-25 57 Lassen Eagle Lake Ranger District. Comment
  UCSC000092  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Bogard Ranger Station - Lassen National Forest Comment
  JEPS28272  Agrostis variabilis George W. Gillett 1957-7-28 927 Lassen above junction Snag Lake trail (100 yds above trail junction, trail to Widow Lake, at upper end of Butte Lake); Lassen Volcanic National Park, Butte Lake 1859 Comment
  SEINET14163171  Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  UC985665  Alisma gramineum Malcolm A. Nobs and S. Galen Smith 1949-7-22 1074 Lassen marshes along Willow Creek (10 mi n of Susanville); Willow Creek Valley Comment
  HSC2887  Alisma triviale R. G. Means 1962-7-5 73 Lassen 1 mi. SW of Bieber. 1250 Comment
  CHSC5928  Allium acuminatum R. Gein 1946-6-17 Lassen Horse Lake near Mt. Fredonyer. 1554 Comment
  UC1776688  Allium acuminatum G. Schoolcraft 1993-6-29 2307 Lassen Ash Valley S of T intersection 1557 Comment
  CAS-BOT-BC461096  Allium anceps B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6553 Lassen Just S of Ravendale 1580 Comment
  CHSC71106  Allium anceps Vernon H. Oswald; Lowell Ahart 1998-5-22 9102 Lassen Hackstaff Rd. 1.0 mi south of Laver Crossing Rd., 0.2 mi north of Fort Sage Rd., ca. 3 mi north of Doyle. 1316 Comment
  UC1229822  Allium lemmonii Gus Hormay 1961-6-15 Lassen experimental forest ot Patterson Flat Patterson Flat Comment
  CAS-BOT-BC470923  Allium lemmonii B. Bartholomew; B. Anderson 1988-6-25 4371 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  HSC47288  Allium lemmonii Dale McNeal 1978-5-30 2129 Lassen Beside Hwy. 395, 1.9 mi. S of Ravendale Comment
  SEINET3885788  Allium lemmonii D. W. McNeal 1978-5-30 2129 Lassen Beside Highway #395, 1.9 mi. South of Ravendale.; 0 Comment
  CAS-BOT-BC474074  Allium platycaule John Thomas Howell; Gordon H. True 1973-9-1 s.n. Lassen Headwaters of Baxter Creek, Diamond Mts, Sierra Nevada 2164 Comment
  CAS-BOT-BC474076  Allium platycaule John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50684 Lassen South and southeast of Diamond Mountain, Sierra Nevada 2286 Comment
  RSA367108  Allium platycaule Rockwell 1925-7-1 s.n. Lassen Beckwith Comment
Read comments
Nov 17 2011
  CAS-BOT-BC476624  Allium tolmiei E. K. Balls 1950-5-18 14 .767. Lassen Along Ash Creek, above Ash Creek Public camp, off rd. from Adin to Medeline. 1584 Comment
  JEPS94536  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1997-6-24 8604 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
  CDA40010  Allophyllum integrifolium T. C. Fuller 1963-7-15 10889 Lassen Road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  SEINET3917718  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen California, Lassen County, 10 miles west of Chester, rte. 36.; 0 Comment
  UCR80283  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen Route 36, 10 mi west of Chester Comment
  CHSC112469  Alopecurus carolinianus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18731 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS127218  Alopecurus carolinianus Lowell Ahart, John Dittes 2016-7-15 21214 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  RSA0029642  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen National Forest. Poison Lake. 1700 Comment
  UC1130817  Alopecurus geniculatus A. Simontacchi 1940-5-17 745 Lassen 5.9 mi. s. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  JEPS107365  Alopecurus pratensis Lowell Ahart, John Dittes 2005-6-1 11868 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1951066  Alopecurus saccatus Debra Valov 2007-5-22 2007074 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CHSC101019  Alyssum desertorum John Dittes 2008-5-22 1538 Lassen Modoc Plateau; ca 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca. 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace on northeast side of Willow Creek. 483 Comment
  UC1583963  Alyssum desertorum G. Schoolcraft 1990-5-15 2046 Lassen about 3 mi s of Nubieber; John's Valley area 1402 Comment
  CHSC107996  Alyssum minus subsp. micranthum Lowell Ahart; John Dittes 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC54178  Alyssum minus subsp. micranthum Vernon H. Oswald 1991-5-28 4629 Lassen South end of Elkins Ln (100 ft south of Modoc-Lassen county line), Ash Creek Wildlife Area, ca. 7 miles northeast of Bieber. In meadow. 1267 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
  CHSC5065  Amaranthus albus D. L. Stites 1967-7-1 143 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  CHSC99984  Ambrosia acanthicarpa L. P. Janeway 2008-8-2 9524 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  CAS-BOT-BC42889  Ambrosia acanthicarpa P. Monnet 1913-8-1 966 Lassen unspecified Comment
  RSA132023  Ambrosia acanthicarpa Delzie Demaree 1959-8-18 41520 Lassen P.O. Termo. Comment
  CAS-BOT-BC142540  Amelanchier utahensis Gary Schoolcraft 1984-6-5 1203 Lassen Upper Spencer Basin, 29-16-24 1889 Comment
  UC12108  Amelanchier utahensis Mrs. R. M. Austin Jun 1894 Lassen Willow Creek Valley 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-BC222253  Amsinckia John Thomas Howell 1934-6-16 12219 Lassen Big Valley, 4 miles ne. of Bieber Comment
  JEPS114650  Amsinckia intermedia Lowell Ahart, John Dittes 2008-6-20 14935 Lassen On the levee road, about 100 yards south of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC106685  Amsinckia tessellata B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  UC1167764  Amsinckia tessellata var. tessellata Peter H. Raven with Otto T. Solbrig 1958-6-17 13276 Lassen 19.0 mi s Ravendale (along US Hwy 395) Comment
  UC198379  Amsinckia tessellata var. tessellata J. G. Lemmon Lassen Sierra and Long Valleys Comment
  CHSC71067  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9121 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  UC891493  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen ca 12 mi n of, at lava beds Fall River Mills (Shasta Co.); Fall River 1371 Comment
  SEINET2029685 Image available Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds about 12 miles north of Fall River Mills (in Shasta County) on Fall River 1372 Comment
  UC1951075  Antennaria dimorpha Debra Valov 2009-4-25 2009016 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  JEPS94559  Antennaria geyeri Vernon Oswald and Lowell Ahart 1997-6-24 8591 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 29N43, 1.2 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 1685 Comment
  RSA713120  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 Rd. 28N01 and 0.6 km east of junction of Janesville Grade Rd (Rd 208 & 28N02) and Road 28N01 1859 Comment
  CAS-BOT-BC69140  Antennaria geyeri Clarence R. Quick 1964-7-29 64 -89 Lassen Blacks Mt. Experimental Forest 1798 Comment
  HSC82217  Antennaria luzuloides Thomas W. Nelson, Jane P. Nelson 1980-7-6 6000 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UC1125572  Antennaria luzuloides A. Simontacchi 1940-6-3 725 Lassen 8.3 mi se Alcohol Jacks Cabin; Halls Flat Quad. 1706 Comment
  UC1609101  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1993-6-14 5527 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on W shore of lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89), upper beach between road and lake); Eagle Lake 1566 Comment
  UCD169450  Antennaria luzuloides Lowell Ahart; John Dittes 2005-6-1 11862 Lassen Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. About 1/2 mile west of Scott Road, on the east side of the poor dirt road. 1448 Comment
  CHSC64837  Antennaria luzuloides subsp. aberrans Vernon H. Oswald 1995-6-25 6930 Lassen Modoc Plateau Ash Valley Rd. (Lassen 527), 9.5 mi w of Madeline, on the s side of the reservoir at Fleming Sheep Camp. 1621 Comment
  CHSC117198  Aphyllon fasciculatum Lowell Ahart; John Dittes 2016-6-7 20997 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC66370  Apocynum androsaemifolium Vernon H. Oswald; Lowell Ahart 1996-6-17 7777 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. 1432 Comment
  UC773901  Apocynum androsaemifolium L. R. Short and D. Gish 1936-8-5 S- 492 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1783 Comment
  CHSC30594  Aquilegia formosa Marc Held 1972-7-7 41 Lassen Collected on the roadside above Gallatin Beach. Comment
  CAS-BOT-BC392213  Aquilegia formosa Lassen 1927 G. S. Crew 1927-7-15 79 Lassen Lassen National Forest. Bogard R.S. 1725 Comment
  SEINET10833275  Arabis David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17783 Lassen 6 mi n of hallelujah jct on u.s. 395, In artemisia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  RSA0129285  Arabis holboellii var. pinetorum R. C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake. Comment
  JEPS53113  Arabis puberula M. S. Baker and F. P. Nutting 1894-7-2 Lassen s. side Dixey Mts. Comment
  NY119422  Arabis rectissima R. C. Rollins 1983-7-5 83227 Lassen 2 miles S of Eagle Lake Summit Comment
  UC1523810  Arabis sparsiflora var. sparsiflora Gary Schoolcraft 1983-5-24 957 Lassen w. Doyle (along Doyle Grade Rd.) 1645 Comment
  SEINET5340852  Arabis sparsiflora var. subvillosa R. C. Rollins, K. W. Rollins 1981-5-31 81178 Lassen Just north of Eagle Lake. 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
  CAS-BOT-BC407748  Arceuthobium abietinum H. L. Boldenbeck 1910-6-1 s.n. Lassen Lassen National Forest Comment
  CAS-BOT-BC409989  Arceuthobium campylopodum John Thomas Howell 1973-7-10 49787 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC45892  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45907  Arctostaphylos nevadensis Bill Wilson 1967-7-14 205 Lassen Silver Lake, 20 mi. NW of Susanville 1889 Comment
  HSC67173  Arctostaphylos patula J. P. Smith, J. O. Sawyer 1972-5-6 5238 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
Read comments
Apr 29 2013
  HSC7705  Arctostaphylos patula L. H. Myers 1963-4-14 39 Lassen Janesville grade road, ca. 3 mi. S of Janesville Comment
  CHSC23558  Arctostaphylos patula subsp. patula W. O. Baum 1971-6-21 41 Lassen E slope of Gallatin Peak on fire trail. 1920 Comment
  UC1136825  Arenaria congesta var. congesta George A. Fischer, Irwin H. Johnson 1933-7-12 f 2223 Lassen Lassen Forest 1728 Comment
  CDA23999  Arenaria congesta var. crassula T. C. Fuller 1963-6-11 10661 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  SEINET530728  Arenaria congesta var. lithophila Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  CAS-BOT-BC27516  Arenaria congesta var. simulans Amos Arthur Heller 1938-6-23 15198 Lassen 2 miles E of Fredonyer Pass 1645 Comment
  RSA59890  Arenaria congesta var. simulans E. K. Balls 1950-5-19 14775 Lassen 21 miles W of Madeline on road to Adin. 1372 Comment
  UC1562793  Arenaria congesta var. subcongesta Barbara Ertter with Gary Schoolcraft 1987-6-16 7193 Lassen ne side Honey lake (saddle on E side of Hot Springs Peak.); Skeedaddle Mountains Comment
  UC1924211  Arenaria congesta var. subcongesta Debra Valov 2004-6-9 2004272 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC852268  Arenaria congesta var. subcongesta A. A. Heller 1938-6-23 15198 Lassen e Fredonyer Pss 1645 Comment
  NY430990  Arenaria kingii subsp. plateauensis G. Schoolcraft 1982-6-23 729 Lassen Fort Sage Mountains 1920.2 Comment
  CHSC52769  Argemone munita subsp. rotundata L. P. Janeway 1990-7-4 3770 Lassen Dry gravelly bench near east-side of saddle 0.8 mi NE of Meadowview Peak. 1981 Comment
  JEPS124519 Image available Argemone platyceras var. hispida P. C. Billigs 1965-7-12 77 Lassen 1.8 mi south of MIlford on Hwy 395 Comment
  CAS-BOT-BC82113  Arnica chamissonis B. Bartholomew; B. Anderson 1988-7-22 4498 Lassen Mosquito Creek ca. 2 km SW of patterson Meadow, southern end of the Warner Mountain 2080 Comment
  UC1136826  Arnica chamissonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 184 Lassen (Dry Lake) Grass Valley Grass Valley, Thompson Meadow 1694 Comment
  UC1533139  Arnica chamissonis Gary Schoolcraft 1986-8-19 1667 Lassen Said Valley Res. 1630 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
  JEPS94480  Arnica cordifolia Vernon H. Oswald and Lowell Ahart 1997-5-27 8527 Lassen 5.4 mi ne of Highway 139 0.4 mi e of its junction with the road to Shingle Mill Spring (n of Susanville on Forest Route 38N04); Forest Route 38N04 1798 Comment
  UC2027326  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen National Forest. Willard Creek. Fredonyer Pass. Fredonyer Pass quadrangle Comment
  UC1567375  Arnica fulgens G. Schoolcraft 1989-7-18 1977 Lassen 1 mi w, (s of Clark Valley Rd, at Buck's Spring_ Clark's Valley; Buck's Spring) 1859 Comment
  CAS-BOT-BC82649  Arnica latifolia John Thomas Howell; Gordon H. True 1973-8-1 50236 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  UC1137701  Arnica mollis A. Simontacchi 1940-5-28 785 Lassen 3.2 mi wsw Patterson Mtn.; Halls Flat Quad. 1767 Comment
  CAS-BOT-BC85029  Arnica sororia Elmer I. Applegate 1897-6-3 866 Lassen Madeline Plains Comment
  JEPS103219  Arnica sororia G. Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin and Madeline, CA. 1600 Comment
  UCD129182  Artemisia arbuscula A. A. Beetle 1957-8-16 12766 Lassen 15 miles south of Alturas. Comment
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Jul 11 2013
  RSA0009935  Artemisia arbuscula subsp. arbuscula Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA233757  Artemisia biennis R. F. Thorne, C. W. Tilforth 1969-9-6 39254 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  SD64324  Artemisia cana subsp. bolanderi Darley F. Howe 1966-8-25 4302 Lassen 41 miles south of Alturas on Hwy 395. 1675 Comment
  SEINET263202  Artemisia nova J. Lyman 1994-4-23 4241 Lassen Along Highway 395, ca. 25 miles north of Susanville on grade up to BLM land 1433 Comment
  JEPS28804  Artemisia tridentata George W. Gillett 1957-9-4 1132 Lassen near Butte Lake (intersection of the Widow Lake-Snag Lake trails); Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC97326  Artemisia tridentata subsp. tridentata Clare B. Hardham 1971-8-22 18395 Lassen Diamond Mountain 2346 Comment
  CHSC67056  Artemisia tridentata subsp. tridentata Willis Ball 1969-6-19 4 Lassen Found approx. 1/2 mile N of E.L.B.S. 1554 Comment
  JEPS37010  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7819 Lassen Madelin Plains 1615 Comment
  RSA758317  Artemisia tridentata subsp. tridentata Doug Goldman 2004-11-5 2935 Lassen To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake 1256 Comment
  SEINET230064  Artemisia tridentata subsp. tridentata Leila M. Shultz, John S. Shultz 1985-6-23 8611 Lassen Long Valley Creek drainage, 5 miles north of Doyle 1305 Comment
  UC74062  Artemisia tridentata subsp. tridentata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  CHSC118473  Artemisia tridentata subsp. vaseyana Don Lepley 2016-9-17 Lassen Between Feather Lakes and Highway 44, approximately 5.3 air miles southeast of Bogard Rest Area; a little more than a third of a mile north of railroad crossing on Highway 44. 40N31:46.8 x 121W01:37.1 1743 Comment
  CHSC26163  Asclepias cordifolia J. D. Detzer; Sacks 1977-6-10 36 Lassen Ca. 0.5 km s of Hwy 395, 4 km w of Milford. 1386 Comment
  UC1123518  Asclepias cordifolia C. W. Hanks 1934-9-26 93 Lassen near Plumas National Forest (w side of valley); Sierraville Quadrangle, Long Valley Comment
  UC1537161  Asclepias fascicularis Gordon H. True Jr. 1937-7-10 787 Lassen between Bull Flat and Skeedaddle 1493 Comment
  CDA5651  Asperugo procumbens Ancell May 1940 Lassen Susanville. 0 Comment
  POM181067  Aster M. S. Jussel 1931-9-6 s.n. Lassen Sulphur Works, Mt. Lassen 2134 Comment
  UCD105584  Astragalus Grady L. Webster 1989-5-13 7710 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  UCR73170  Astragalus G. L. Webster 1989-5-13 7721 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA0006691  Astragalus accidens var. hendersonii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 108749 Lassen South of Constantia. 1463 Comment
  NY790906  Astragalus agrestis G. Schoolcraft 1986-6-25 1642 Lassen About 3 miles northwest of Termo 1615.4 Comment
  CAS-BOT-BC177440  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle 1402 Comment
  CHSC77208  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle. 1402 Comment
  JEPS107970  Astragalus andersonii Lowell Ahart, John Dittes 2005-6-1 11917 Lassen Long Valley, along the east side of a poor road, about 4 1/2 (air) miles north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  NY791371  Astragalus andersonii D. B. Dunn 1971-6-2 17802 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402.1 Comment
  UC585206  Astragalus andersonii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1754 Lassen nw-facing slope of ridge e Red Rock; ridge e of Red Rock 1615 Comment
  UC84393  Astragalus andersonii T. Brandegee 1892-6-30 Lassen Janesville Comment
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Oct 22 2007
  CHSC63394  Astragalus anxius V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6351 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  CAS-BOT-BC178762  Astragalus canadensis var. brevidens John Thomas Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake Comment
  UCD53891  Astragalus canadensis var. brevidens A. M. Shapiro 2005-6-10 s.n. Lassen 1 mi. SE Beckwourth Pass. 1524 Comment
  HSC69613  Astragalus curvicarpus Gary Schoolcraft 1979-6-19 77 Lassen Just N of West Painter Flat Rd. intersection. 1720 Comment
  RSA111039  Astragalus curvicarpus R. C. Barneby 1949-6-11 11 Lassen Secret Valley, 18 miles S of R(illegible) Comment
  RSA111041  Astragalus curvicarpus H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5676 Lassen N or Doyle. 1265 Comment
  RSA152593  Astragalus curvicarpus I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16331 Lassen 13.5 mi. E of Susanville. Comment
  SEINET10486010  Astragalus curvicarpus Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 862 Lassen Collected on road bank 24 mi n of california state line on hwy 395. Comment
  CAS-BOT-BC177845  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-16 8336 Lassen Near Susanville Comment
  JEPS54557  Astragalus curvicarpus var. curvicarpus T. Brandegee 1892-6-23 Lassen Honey Lake Comment
  NY803536  Astragalus curvicarpus var. curvicarpus P. Gallian 1971-6-2 509 Lassen 6 miles north of Hallelujah Jct. on U.S. Highway 395 1402 Comment
  UC1609292  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald and Lowell Ahart 1993-6-14 5519 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake (ca 2.0 mi ene of Spaulding Tract Rd. (Rd.518,33N89), among low dunes on upper beach btwn road and lake); w shore Eagle Lake 1566 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
  SEINET12165120  Astragalus curvicarpus var. curvicarpus N. H. Holmgren, Holmgren, P. K. 1980-1 9504 Lassen Observation Peak, S side of Mt, 11 mi airline distance E of Ravendale, T34N R16W S34 1890 Comment
  SEINET7103940  Astragalus curvicarpus var. curvicarpus D. W. McNeal 1983-6-5 2839 Lassen Hwy #395, 9.2 mi N of the Plumas Co. line.; 0 Comment
  SEINET7103990  Astragalus curvicarpus var. curvicarpus T. N. Kaye 1990-6-27 1254 Lassen Ash Valley Road, 16 miles east of Adin.; 0 Comment
  CHSC106082  Astragalus filipes Lowell Ahart; John Dittes 2010-7-31 16976 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
  CHSC37683  Astragalus filipes M. S. Taylor 1982-5-29 4569 Lassen Along dirt road paralleling Hwy 395 on its e side, ca. 1/2 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 1524 Comment
  HSC82216  Astragalus filipes Thomas W. Nelson, Jane P. Nelson 1980-7-6 6001 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  CAS-BOT-BC182953  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  CDA26669  Astragalus filipes T. C. Fuller 1965-8-26 14038 Lassen Haskell Parks range, Diaz Flat, ca. 5 miles east of Hayden Hill, northwest Lassen County. 0 Comment
  SEINET10903957  Astragalus filipes Williams 1983-7-31 Williams 83 -125-1 Lassen Ash valley road, 17 mi from aden. 1829 Comment
  SEINET5325729  Astragalus filipes M. J. Williams 1983-7-31 83- 125 -1 Lassen Ash Valley road, 17 mi from Aden. 1829 Comment
  NY674268  Astragalus gibbsii G. Schoolcraft 1993-6-8 2285 Lassen US Highway 395 at Airport Road 1274 Comment
  POM24783  Astragalus gibbsii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1128797  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley Sierraville Quad., Long Valley Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  SEINET5324147  Astragalus iodanthus var. iodanthus A. Tiehm 1980-1 5755 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  CAS-BOT-BC229049  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  UC13384  Astragalus lemmonii M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC1128892  Astragalus lentiginosus var. lentiginosus A. Simontacchi 1940-6-8 844 Lassen Halls Flat Ranger Station , Halls Flat Quad. (Lassen National Forest) Comment
  CHSC71083  Astragalus malacus Vernon H. Oswald; Lowell Ahart 1998-5-22 9104 Lassen Road to ORV parking area in Fort Sage Mtns. 0.5 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1371 Comment
  RSA415816  Astragalus malacus Christopher Davidson 1975-6-7 2748 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CAS-BOT-BC192841  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC192844  Astragalus pulsiferae A. A. Heller; P. B. Kennedy 1907-7-1 8674 Lassen Near Old Chat Comment
  CAS-BOT-BC192846  Astragalus pulsiferae Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  JEPS54791  Astragalus pulsiferae J. B. Davy June 1897 Lassen Chat Long Valley, Chat Comment
  CHSC83400  Astragalus pulsiferae var. coronensis R. Ondricek-Fallscheer 1999-7-9 201 Lassen About 11 air mi SE of Adin; E edge of Hunsinger Flat Rd. (USFS Rd. 38N04), 1.0 road mi south of jct. with USFS Rd. 39N08. 1600 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
  SD71380  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen The Sierra Nevada, Sagebrush flat, east side of Beckwourth Pass 1493 Comment
  RSA0006849  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 Comment
  CAS-BOT-BC194087  Astragalus purshii var. purshii Louella Bass 1973-6-12 102 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  CAS-BOT-BC194088  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Perkin's Ranch, top of Diamond Mt., Susanville 2225 Comment
  CAS-BOT-BC194094  Astragalus purshii var. purshii Clare B. Hardham 7446 Lassen Diamond Peak 2286 Comment
  POM45163  Astragalus purshii var. purshii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  RSA121818  Astragalus purshii var. purshii G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 249 Lassen Forest: Lassen. 1784 Comment
  RSA715542  Astragalus purshii var. purshii L. Ahart 2005-6-1 11870 Lassen About 1/2 miles west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70., 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CAS-BOT-BC194091  Astragalus purshii var. purshii Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC194096  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8345 Lassen Jonesville Comment
  RSA339987  Astragalus whitneyi Noel Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 2195 Comment
  UC82594  Astragalus whitneyi T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  UCD105481  Astragalus whitneyi B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  CHSC5283  Astragalus whitneyi var. confusus J. Wolf 1946-6-17 Lassen Eagle Lake. Mt. Freedonyer. 2286 Comment
  CAS-BOT-BC200874  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  CAS-BOT-BC200876  Astragalus whitneyi var. lenophyllus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susnaville. Perkin's Ranch 2225 Comment
  CAS-BOT-BC199134  Astragalus whitneyi var. siskiyouensis H. D. Ripley; R. C. Barneby 1943-6-14 5747 Lassen Hidden Valley E of Susanville 1584 Comment
  RSA110171  Astragalus whitneyi var. siskiyouensis H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-14 5747 Lassen Hidden Valley E of Susanville. 1585 Comment
  NY701856  Astragalus whitneyi var. whitneyi N. H. Holmgren 1980-7-4 9514 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 2190 Comment
  UC295904  Atriplex argentea H. M. Hall 1925-8-31 12215 Lassen Amedee Comment
  UC769845  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  UC527347  Atriplex confertifolia C. B. Wolf 1931-9-5 2402 Lassen on road to Doyle 1/2 mi from Amedee R.R. station (Honey Lake Valley); , 1/2 mi from Amedee R.R. station Comment
  CAS-BOT-BC172656  Atriplex gardneri var. falcata G. Schoolcraft 1989-5-16 1877 Lassen In Secret Valley west of Hwy. 395 Comment
  CHSC63701  Atriplex heterosperma Vernon H. Oswald 1994-9-6 6467 Lassen Willow Creek Wildlife Area on Hwy. 139, ca. 10 mi (air) N of Susanville. 1490 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
  CHSC100131  Atriplex truncata L. P. Janeway 2008-8-2 9528 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
  JEPS117922  Atriplex truncata L. P. Janeway 2008-8-2 9528 Lassen just above the flats along the south side of Rush Creek Modoc Plateau (south side fo Smokey Creek Ranch Road 1.8 km west of the CA-NV line.) 1349 Comment
  RSA0089261  Baeria Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  SEINET11839299  Balsamorhiza hirsuta N. H. Holmgren, Holmgren, P. K. 1978-1 8935 Lassen upper Smoke Creek, just S of Observation Peak, 17 km air ESE of Ravendale 1770 Comment
  CAS-BOT-BC106492  Balsamorhiza hookeri Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville State Hwy #36 Comment
  SEINET10617243  Balsamorhiza sagittata Paul Gallian, David B. Dunn 1971-6-2 Gallian 500 Lassen Approx. 22 mi. S of Adin on CA Hwy. 139; in basalt; assoc: Juniper, Artemisia. 1646 Comment
  SJSU8894  Balsamorhiza sagittata W. Savage 1971-7-20 722 .5 Lassen c. 2 mi N of Milford near W side Honey Lake 1264 Comment
  CAS-BOT-BC16435  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49464 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CDA43005  Barbarea orthoceras L. Ahart, John Dittes 2008-6-2 14949 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
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Oct 5 2019
  SEINET11997544  Barbarea orthoceras N. H. Holmgren, Holmgren, P. K. 1978-1 8919 Lassen vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km E of Ravendale & 1680 Comment
  UC1191423  Bassia hyssopifolia Verne Grant and Irving Schneider 1947-9-6 8390 Lassen near Wendel (irrigation ditch w of Fleming Ranch Headquarters) Comment
  UC188777  Beckmannia syzigachne Milo S. Baker Lassen Dixey Valley Comment
  UC790979  Beckmannia syzigachne A. A. Beetle 1941-6-28 2813 Lassen lower slopes of peak 6 mi s Ravendale; Observation Peak Comment
  CAS-BOT-BC76025  Berberis repens Parkison 1916-6-17 13 Lassen Lassen Forest. North slope Crater Mountain. 1706 Comment
  UCR182957  Berteroa incana C. Battis 2005-8-2 s.n. Lassen Modoc Plateau, Anderson Ranch in southern part of county [c. 5.5 miles north of Hwy 70 on Scott Road] 1479 Comment
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May 25 2012
  NY1102107  Berula erecta R. F. Hoover 1940-10-1 4658 Lassen Near Honey Lake, between Janesville and Standish Comment
  UC30552  Bidens cernua J. Burtt Davy Jun 17 1897-Jun 24 1897 3309 Lassen Tule Confederacy Comment
  CHSC1342  Bistorta bistortoides L. Harmon 1946-6-23 Lassen Squaw Valley. Comment
  CAS-BOT-BC128033  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC128045  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3725 Lassen 5 mi. S. of Likely (Modoc Co.) 1402 Comment
  JEPS22625  Blepharipappus scaber R. F. Hoover 1940-9-28 4633 Lassen Susanville 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
  SEINET11261379  Blepharipappus scaber Stanley L. Welsh, N. Duane Atwood 2001-6-14 28151 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1540 Comment
  UC577280  Blepharipappus scaber David D. Keck and J. Clausen 1935-6-24 3733 Lassen 2 mi s of Ravendale 1463 Comment
  UC577298  Blepharipappus scaber David D. Keck and J. Clausen 1935-6-24 3725 Lassen 5 mi s of (in Modoc Co.) Likely 1402 Comment
  CAS-BOT-BC127955  Blepharipappus scaber Dr. Jean Linsdale 1929-6-9 s.n. Lassen Pete's Valley Comment
  POM223718  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3725 Lassen 5 miles south of Likely. 1402 Comment
  SEINET10912069  Blepharipappus scaber David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17767 Lassen Approx. 12 mi. S of Adin on CA Hwy. 139, in basalt & clay; along edge of road on rolling knoll, in Artemisia-Juniper assoc. 1372 Comment
  SEINET7379359 Image available Blepharipappus scaber subsp. scaber J. A. Young 1982-6-9 s.n. Lassen Myers Ranch, Adin 1372 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
  CHSC40529  Boechera pauciflora J. D. Jokerst 1983-5-30 1798 Lassen 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
  CHSC107999  Boechera pinetorum Lowell Ahart; John Dittes 2011-6-20 17505 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
  CAS-BOT-BC14294  Boechera platysperma John Thomas Howell; Gordon H. True 1973-7-31 50040 Lassen Sierra Nevada. Diamond Range. On road from Janesville to Thompson Peak. 1737 Comment
  CAS-BOT-BC14514  Boechera puberula H. D. Ripley; R. C. Barneby 1944-3-30 5890 Lassen North of Madeline. 1706 Comment
  JEPS111471  Boechera retrofracta B. A. Roy, J. W. Kirchner 1996-5-11 Lassen SE of Susanville, off highway 36. 9.8 miles up Gold Run Road (follow Richmond Rd. (E) to Gold Run Road (E) on side of Diamond Mtn. Comment
  UC2046019  Bolboschoenus maritimus subsp. paludosus Nick Otting, Carex Working Group 2003-7-19 708 Lassen Modoc Plateau, Biscar Reservoir, 19 air miles northeast of Susanville. Comment
  HSC16160  Brasenia schreberi Fred J. Kindel 1955-7-14 Lassen Mt. Meadows Reservoir Comment
  SEINET8193957  Brodiaea congesta J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch. 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
  HSC82193  Brodiaea coronaria subsp. coronaria Thomas W. Nelson, Jane P. Nelson 1980-7-6 6047 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  CAS-BOT-BC149496  Bromus briziformis John Thomas Howell 1977-6-22 52398 Lassen Northeast of Susanville on road to Eagle Lake. Comment
  CAS-BOT-BC149583  Bromus carinatus var. carinatus Parkison 1916-6-21 42 Lassen Near Patterson. 1706 Comment
  CHSC34410  Bromus carinatus var. marginatus Terrence Finn 1979-6-14 1 Lassen 0.75 mi. sw of Hallelujah Junction. 1524 Comment
  UCD59098  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  CHSC118475  Bromus carinatus var. marginatus Don Lepley 2016-7-20 Lassen Eagle Lake Ranger District. Uphill side of Road 29N43.2 at outlet of Aspen Flat (tributary to Baxter Creek). 2026 Comment
  JEPS96125  Bromus commutatus Vernon H. Oswald and Lowell Ahart 1996-6-17 7788 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy 36, trail at hwy 36 bridge spanning Susan River); Modoc Plateau, Bizz Johnson Trail 1402 Comment
  RSA127004  Bromus commutatus H. S. Yates 1936-8-11 6074 Lassen Bexter Creek [Baxter? creek]. Susanville. 1280 Comment
  CAS-BOT-BC155324  Bromus inermis John Thomas Howell 1973-7-10 49766 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  CDA1827  Bromus japonicus A. A. Beetle 1941-6-28 2809 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 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
  JEPS123451  Bromus marginatus Wilson Collison, Jaileen Merced 2015-8-12 CA 320 -146 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  UC506916  Bromus orcuttianus George A. Fischer, Irwin H. Johnson 1933-7-14 F 261 Lassen Lassen National Forest 1783 Comment
  UC1131325  Bromus suksdorfii A. Simontacchi 1940-6-8 836 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  CAS-BOT-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
  CHSC7696  Bromus tectorum Beverley J. Wise 1969-4-28 127 Lassen North city limits of Milford (Hwy 395). 1310 Comment
  RSA126830  Bromus tectorum H. S. Yates 1937-5-12 6085 Lassen McKenzie Meadow; Susanville 1524 Comment
  RSA715626  Bromus tectorum L. Ahart, John Dittes 2005-6-1 11909 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  UC1024827  Bromus tectorum Leo Whitney 1935-7-12 3233 Lassen Lassen National Forest, Camp 10, Fruit Grower's Supply Company Lassen National Forest; , Camp 10, Fruit Grower's Supply Compa Comment
  UC1131326  Bromus tectorum A. Simontacchi 1940-6-8 835 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  SEINET10515052  Bromus tectorum Paul Gallian, David B. Dunn 1971-6-2 Gallian 522 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UC1924233  Calamagrostis stricta Debra Valov 2004-6-9 2004263 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  CAS-BOT-BC438313  Calandrinia ciliata H. D. Ripley; R. C. Barneby 1942-6-14 5736 Lassen Westwood 1554 Comment
  HSC36104  Callitriche fassettii Ken Mahouski 1973-4-29 Lassen Along Hat Creek at Hat #2 power house forebay, near Cassel. Comment
  RSA128308  Callitriche hermaphroditica P. H. Raven, Otto T. Solbrig 1958-6-17 13260 Lassen Along U.S. Hwy 395, 2.1 miles NE of Standish. Comment
  JEPS120868  Callitriche heterophylla Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18750 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
  RSA67251  Calocedrus decurrens Philip A. Munz 1951-9-15 16965 Lassen On dry flats, 6 mi west of Bieber. 1341 Comment
  SEINET10531060  Calocedrus decurrens Katherine L. Morris 1973-5-25 Morris 226 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  CHSC4921  Calochortus leichtlinii L. G. Bennett 1967-6-24 24 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  SBBG15290  Calochortus leichtlinii H. and M. Dearing 1938-7-1 2237 Lassen top of pass W of Susanville 1762 Comment
  CAS-BOT-BC487969  Calochortus leichtlinii A. M. Vollmer; L. Beane 1953-7-1 49 Lassen Along Halls Flat road, beginning 6 miles west of Susanville, to McArthur 1554 Comment
  POM253058  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen Along Highway 36 in the valley east of Fredonyer Pass Comment
  SEINET3363841 Image available Calochortus leichtlinii Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Perkin's Ranch 1829 Comment
  UC1537211  Calochortus macrocarpus Gordon H. True Jr. 1936-6-26 542 Lassen near Litchfield (w slope of Rice Canyon); Rice Canyon 1463 Comment
  HSC63946  Calyptridium monospermum Teresa Prendusi 1980-7-14 Lassen Ash Valley, about 15 mi. W of Madeline along Ash Valley Rd. 1524 Comment
  CHSC30590  Calyptridium umbellatum Marc Held 1972-6-29 22 Lassen North end of Dean's Meadow. Comment
  UC1542941  Calyptridium umbellatum G. Schoolcraft 1987-4-29 1688 Lassen Ash Valley National Recreational Area 1554 Comment
  CAS-BOT-BC497555  Camassia quamash subsp. breviflora G. S. Crew 1927-6-10 55836 Lassen Norval flat Comment
  RSA0009459  Camassia quamash subsp. breviflora Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CHSC30609  Camassia quamash subsp. quamash G. A. Brown 1975-6-30 10 Lassen Across from Coleman Lake. 1920 Comment
  POM38357  Camissonia andina Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 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
  JEPS107466  Camissonia parvula Lowell Ahart, John Dittes 2005-6-1 11852 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  NY851778  Camissonia pubens W. W. Eggleston 1911-5-29 6741 Lassen Vicinity of Doyle Station 1290 Comment
  RSA271914  Camissonia pubens Christopher Davidson 1975-6-7 2758 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  SEINET10903367  Camissonia pusilla David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17799 Lassen 6 mi n of hallelujah jct. On us hwy 395, in artemisia tridentat, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  HSC30040  Camissonia subacaulis D. H. Norris, S. Dowty, T. Nelson 1971-6-22 19152 Lassen 3 mi. N of Westwood Comment
  NY852074  Camissonia tanacetifolia Mrs. C. C. Bruce 06 1898 2203 Lassen Susanville Comment
  CAS-BOT-BC160835  Camissonia tanacetifolia subsp. quadriperforata John Thomas Howell 1934-6-10 11857 Lassen 3 miles n. of Omira Comment
  RSA12158  Camissonia tanacetifolia subsp. quadriperforata Wayne E. Sawyer 1935-6-27 219 Lassen Long Valley. 1311 Comment
  POM204165  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell 1934-7-8 12505 Lassen Spalding s, Eagle Lake. Comment
  CAS-BOT-BC160861  Camissonia tanacetifolia subsp. tanacetifolia Raymond Nelson 1962-8-25 s.n. Lassen Lassen Volcanic National Park. On the east shore of Snag Lake Comment
  CAS-BOT-BC160866  Camissonia tanacetifolia subsp. tanacetifolia A. R. Kruckeberg 1954-6-22 3322 Lassen Along roadbanks, 6 miles s. of Likely on Highway 395 Comment
  CAS-BOT-BC160872  Camissonia tanacetifolia subsp. tanacetifolia Loran C. Anderson; Kent Fish 1965-8-17 2951 Lassen Along hiway 44, in undisturbed sites of Hog Flat. 24 air miles northwest of Susanville 1676 Comment
  CHSC68853  Cardamine breweri Vernon Oswald; Lowell Ahart 1997-6-24 8618 Lassen South of Susanville on the north side of Diamond Mtn. at an impoundment on the edge of Forest Rd. 29N43 ca. 7.4 miles east of Gold Run Rd. (29N10), ca. 2.7 mi east of Lassen NF boundary. On the edge of a streamlet entering the impoundment. 2036 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
  JEPS95978  Cardaria chalepensis Vernon H. Oswald and L. Ahart 1999-6-9 9749 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area: T31N R15E SE1/4 Sect. 18, 4440 ft elevation, sagebrush scrub 1353 Comment
  JEPS94075  Cardaria pubescens Vernon H. Oswald and Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on County Rd. 91 (Bieber-Lookout Rd.)) 1258 Comment
  CAS-BOT-BC18287  Carex John Thomas Howell; Gordon H. True 1973-8-1 50177 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road, south of Susanville. 1584 Comment
  UC725739  Carex A. A. Heller 1942-9-7 16531 Lassen Echo Lake Lassen Volcanic National Park Comment
  CAS-BOT-BC17909  Carex angustata Leo Whitney 1934-7-31 1972 Lassen Bridge Creek Camp. 1737 Comment
  CHSC112416  Carex angustata Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18769 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  SD130377  Carex athrostachya John Thomas Howell 1973-7-10 49780 Lassen Sierra Nevada; open Jeffrey pine forest, Fredonyer Pass. 1737 Comment
  POM80803  Carex densa Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CHSC53521  Carex douglasii L. P. Janeway 1990-7-4 3766 Lassen Bench on east side of saddle ca 0.8 mi northeast of Meadoview Peak. 1981 Comment
  CHSC68771  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8519 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
  HSC48336  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19246 Lassen 2 mi. N of Westwood Comment
  HSC48337  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen 2 mi. N of Westwood Comment
  JEPS107438  Carex douglasii Lowell Ahart, John Dittes 2005-6-1 11863 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  RSA298354  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen About 2 miles north of Westwood. Comment
  UC1537637  Carex douglasii Gordon H. True Jr. 1939-6-15 996 Lassen w Grasshopper Lake; Bullard Lake 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
  UC1776677  Carex douglasii G. Schoolcraft 1995-5-22 2486 Lassen East of Skedaddle Ranch 1554 Comment
  UC506939  Carex douglasii George A. Fischer, Irwin H. Johnson 1933-7-12 F 234 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  CAS-BOT-BC19917  Carex epapillosa L. S. Smith 1918-8-11 1018 Lassen Modoc Forest. Trail to Lost Lake-T38-16. 2438 Comment
  CHSC108015  Carex filifolia var. erostrata Lowell Ahart; John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1133496  Carex filifolia var. erostrata A. Simontacchi 1940-5-17 729 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC20940  Carex heteroneura George Wilson Gillett 1957-7-21 865 Lassen Below (north of) summit of trail between Juniper Lake and Cameron Meadow. 2118 Comment
  UC1133501  Carex integra A. Simontacchi 1940-5-14 720 Lassen 4.1 mi wnw Aspen Well; Lassen National Forest, Halls Flat Quadrangle Comment
  HSC103653  Carex lenticularis var. limnophila Thomas W. Nelson, Jane Nelson 1985-8-10 8010 Lassen Along north side of Silver Lake 1829 Comment
  HSC95192  Carex limosa Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC31946  Carex microptera Clare B. Hardham 1971-8-22 18373 Lassen Streamside, Diamond Mt. 2346 Comment
  UC1583950  Carex multicaulis G. Schoolcraft 1990-5-15 2049 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  CHSC98668  Carex nebrascensis Thomas W. Nelson; Jane P. Nelson 1985-8-10 8019 Lassen In lake side bog along north side of Silver Lake. 1828 Comment
  JEPS114767  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-20 14953 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS114853  Carex nebrascensis Lowell Ahart, John Dittes 2008-6-22 15019 Lassen N side of levee, about 90 yds E of the tall poles, in Big Valley, about 3.5 mi NE of the Headquarters at Ash Creek State Wildlife Area, about 5.5 mi (air) NE of Bieber 1260 Comment
  JEPS120112  Carex nebrascensis Lowell Ahart, John Dittes 2012-7-9 18298 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET7568738 Image available Carex nebrascensis L. P. Janeway 2003-7-24 7914 Lassen Pegleg Mountain 7.5' quad. High Cascade Range, at lower end of a meadow and marsh along Bridge Creek, 1.8 km north of Hwy 44, just northwest of the Cinder Pit. 1716 Comment
  HSC103643  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8019 Lassen Along north side of Silver Lake 1829 Comment
  UCD140678  Carex nebrascensis Beecher Crampton 1964-6-26 7077 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  CAS-BOT-BC119042  Carex pellita Hans Leschke 1960-8-10 1768 a Lassen Badger Flat 1912 Comment
  CHSC66270  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-24 7892 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the southern-most spring on the E side of the meadow 1633 Comment
  CHSC85980  Carex pellita L. P. Janeway 2003-7-24 7919 Lassen High Cascade Range. In middle of small meadow below Forest Service Road 30N14 1.1 km from Road 30N21; small side drainage of upper Susan River 4.6 (air) km west of Clover Valley. 1920 Comment
  JEPS88524  Carex pellita Vernon H. Oswald and Lowell Ahart 1996-6-24 7892 Lassen Papoose Meadows Modoc Plateau (located 0.5 mi e of Eagle Lake Rd. (A1) and 2.5 mi s of Eagle Lake, souternmost spring on e side of meadow) 1633 Comment
  SEINET13407108  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek 1768 Comment
  SEINET7570967 Image available Carex pellita George W. Gillett 1957-7-26 906 Lassen Lassen Volcanic National Park, Butte Lake, east shore 200 yards beyond the outlet. 1844 Comment
  CHSC43570  Carex praegracilis Lowell Ahart 1974-7-9 540 Lassen Along the edge of the road, near the south edge of Eagle Lake. 1584 Comment
  JEPS107834  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  UC2031884  Carex praegracilis Nick Otting 2003-7-16 689 Lassen Modoc Plateau, Smoke Creek, 13.5 air miles east-southeast of Ravendale. Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  CAS-BOT-BC118026  Carex rossii John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49195 Lassen Elysian Valley NW of Janesville. 1325 Comment
  CAS-BOT-BC115970  Carex subfusca Peter H. Raven; Otto Thomas Solbrig 1958-6-16 13253 Lassen 4.5 mi E of Westwood on St Hwy 36. Comment
  CAS-BOT-BC116606  Carex subfusca Clare B. Hardham 1969-8-28 17440 Lassen West of Janesville. Comment
  CAS-BOT-BC116623  Carex subfusca John Thomas Howell 1973-7-10 49765 Lassen Near Westwood. 1554 Comment
  UC2031880  Carex subfusca Nick Otting 2003-7-17 695 Lassen Cascade Mountains, Susan River, 1/2 mile NE of Devil's Corral, 5 air miles west of Susanville. Comment
  CAS-BOT-BC116617  Carex subfusca B. Clear 1938-7-14 s.n. Lassen Manzanita Lake, Lassen Park. Comment
  SEINET7577217 Image available Carex subfusca George W. Gillett 1957-7-26 913 Lassen Lassen Volcanic National Park, Butte Lake. 1844 Comment
  UC1142963  Carex utriculata A. L. Hormay 1941-6-17 24 Lassen near Westwood (Meadow Lake); Lassen National Forest 1615 Comment
  HSC95287  Carex vesicaria Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-29 534 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA220022  Carex whitneyi Beecher Crampton 1964-6-26 s.n. Lassen Ca. 4 miles SSE Bogard Ranger Station, Lassen National Forest. Comment
  CAS-BOT-BC248944  Castilleja Mike Vasey 1990-6-30 9055 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  UC1368787  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen about 6 mi n Honey Lake 1280 Comment
  UC583392  Castilleja angustifolia Elmer I. Applegate 1934-5-4 8921 Lassen s of Secret Valley Comment
  UC585181  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1759 Lassen e of Red Rock (nw side of summit of ridge) 1828 Comment
  HSC93502  Castilleja applegatei subsp. disticha Gordon Leppig, Tony LaBanca 1998-7-13 965 Lassen Modoc National Forest, Blue Lake Ranch 1799 Comment
  CAS-BOT-BC249615  Castilleja applegatei subsp. pinetorum A. M. Vollmer; L. Beane 1953-7-1 39 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC249621  Castilleja applegatei subsp. pinetorum Mrs. A S. Baldwin 1927-5-19 s.n. Lassen Lava Beds Comment
  CAS-BOT-BC249624  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Route 36, Susanville 1371 Comment
  CHSC36484  Castilleja applegatei subsp. pinetorum Margaret E. Halloran 1982-6-3 5 Lassen 3 1/2 mi s of jct of forest service roads 5.16 and 5.17. Comment
  CHSC91291  Castilleja applegatei subsp. pinetorum Lowell Ahart; John Dittes 2005-6-2 11929 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
  JEPS17616  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with G. T. Robbins 1955-7-20 5411 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley); Warner Mountains, Modoc National Forest, Long Valley Meadow 2057 Comment
  JEPS81866  Castilleja applegatei subsp. pinetorum L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5842 Lassen About 2.5 miles west of Paynes Creek, along highway 36 to Mt. Lassen (6.5 miles northeast of Dales) Comment
  UC1063040  Castilleja applegatei subsp. pinetorum H. P. Hagge 1929-9-12 25 Lassen Logan Mtn.; Eagle Lake Quad. 1828 Comment
  UC1063044  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1137290  Castilleja applegatei subsp. pinetorum K. E. Bradshaw 1939-5-27 238 Lassen n end Black Mountain Experimental Forest (Plot 39-1); Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1542945  Castilleja applegatei subsp. pinetorum G. Schoolcraft 1987-5-6 1699 Lassen n end Eagle Lake (near Stone Ranch) 1554 Comment
  CHSC65124  Castilleja arachnoidea Vernon H. Oswald; Lowell Ahart 1995-7-24 7134 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W od Upper Stephens Medws., just S of Pine Creek. 1950 Comment
  CHSC68874  Castilleja arachnoidea Vernon Oswald; Lowell Ahart 1997-6-24 8642 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
  JEPS94529  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1997-6-24 8642 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  RSA523923  Castilleja arachnoidea Barbara J. Ertter 1988-7-25 7861 Lassen ridge of Diamond Mts, 1.5 miles E of Diamond Peak, 10 air miles due S of Susanville. 2287 Comment
  UC1563850  Castilleja arachnoidea Barbara Ertter 1988-7-25 7861 Lassen ca 1.5 mi e Diamond Peak (ca 10 air mi due s of Susanville, ridge of Diamond Mts); Diamond Mts. 2286 Comment
  JEPS23848  Castilleja campestris subsp. campestris Peter H. Raven and Otto T. Solbrig 1959-6-17 13295 Lassen 4.8 mi s Madeline (along U.S. Hwy 395) Comment
  UC604559  Castilleja campestris subsp. campestris C. W. Sharsmith 1938-7-18 3631 Lassen 2 mi s Madeline; Madeline Plains 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
  CHSC117183  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 21021 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  CHSC92738  Castilleja lacera L. P. Janeway 2005-7-3 8454 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
  UC199374  Castilleja lacera Milo S. Baker Jul 1894 Lassen Dixie Valley Comment
  CHSC1713  Castilleja linariifolia K. Chew 1954-7-17 Lassen 1615 Comment
  UC1542951  Castilleja linariifolia G. Schoolcraft 1987-9-1 1771 Lassen s side near top Observation Mtn. 2346 Comment
  JEPS17633  Castilleja miniata Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5402 Lassen 2.3 mi s of and below Patterson Ranger Station (meadowy spots along East Creek on grade, 0.8 mi s of Lassen-Modoc County line, s-end of Warner Mts); Warner Mts., East Creek 2011 Comment
  CAS-BOT-BC244887  Castilleja miniata Alice Eastwood 1912-8-22 1784 Lassen trail from Morgans Springs to Sulphur Works. Lassen Butte Region. Comment
  CAS-BOT-BC244888  Castilleja miniata Alice Eastwood 1912-8-22 1808 Lassen meadows foot of Lassen Butte. Lassen Butte Region Comment
  CAS-BOT-BC244891  Castilleja miniata anonymous 1927-7-1 40 Lassen Bogard R. S. pasture 1712 Comment
  CAS-BOT-BC244894  Castilleja miniata W. C. McCalla 1940-6-21 6284 Lassen Little valley along Hy. 36, west of Susanville Comment
  CAS-BOT-BC244896  Castilleja miniata Clare B. Hardham 1971-8-22 18382 Lassen Granitic slope west of Janesville Comment
  CHSC6269  Castilleja miniata subsp. miniata J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  CAS-BOT-BC241005  Castilleja pilosa Margaret Williams; Lyn Wise 1976-5-31 76- 22 -1 Lassen Near Nervine Aero Service, E of Beckwourth 1524 Comment
  CHSC27743  Castilleja pilosa N. E. Heiken 1978-7-28 68 Lassen E of Eagle L., base of basalt jumble, along Lower Dry L. 1645 Comment
  CHSC5902  Castilleja pilosa J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. Eagle Lake. 2133 Comment
  JEPS17615  Castilleja pilosa Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5410 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadow, s end of the Warner Mountains); Warner Mountains, Long Valley Meadow 2057 Comment
  JEPS80679  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5531 Lassen nw corner Eagle Lake; North Eagle Lake Campground 1524 Comment
  UC1924580  Castilleja pilosa Debra Valov 2006-5-29 2006032 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1282 Comment
  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
  CHSC116102  Castilleja tenuis Lowell Ahart; John Dittes 2015-7-13 20314 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC4433  Castilleja tenuis K. R. Stern 1967-7-1 2466 Lassen Murrer Ranch, ca. 17 mi. NE of Susanville. 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
  JEPS107826  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
  JEPS79149  Castilleja tenuis L. R. Heckard with R. Bacigalupi 1980-6-12 5252 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  UC1012485  Castilleja tenuis Francis W. Pennell 1940-6-7 25727 Lassen 8 mi e Nubieber (Route 299) 1310 Comment
  UC27205  Castilleja tenuis J. Burtt Davy Jun 17 1897-Jun 24 1897 3359 Lassen Adobe meadows; Honey Lake Valley Comment
  JEPS103212  Castilleja tenuis G. Schoolcraft 1993-6-29 2314 Lassen Ash Valley RNA 16 miles east of Adin, CA 1554 Comment
  CAS-BOT-BC48706  Ceanothus cordulatus John Thomas Howell 1974-7-9 50480 Lassen Coniferous forest between Susanville and SW end of Eagle lake 1828 Comment
  CHSC46505  Ceanothus cordulatus Lowell Ahart 1974-7-9 514 Lassen Growing along the edge of Eagle Lake Road on dry stony soil, about 4 miles west of Susanville. 1584 Comment
  CAS-BOT-BC49259  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7991 Lassen Big Valley Mts. Comment
  CAS-BOT-BC52047  Ceanothus prostratus A. M. Vollmer; L. Beane 1953-7-1 88 Lassen Along Halls Flat Road, beinning 6 miles West of Susanville to McArthur 1554 Comment
  CAS-BOT-BC52050  Ceanothus prostratus L. B. Barlow 1967-7-4 92 Lassen 5 mi. South of Eagle Lake Biological Station on Gallatin Beach Road 1737 Comment
  JEPS42164  Ceanothus velutinus Brown and Wieslander 1921-9-1 83 Lassen Martin Sring Eagle Lake Comment
  JEPS107853  Ceanothus velutinus var. velutinus Lowell Ahart, John Dittes 2005-6-2 11943 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  SEINET10690337  Ceanothus velutinus var. velutinus Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 153 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  CAS-BOT-BC52436  Ceanothus velutinus var. velutinus M. S. Jussel 1931-9-6 s.n. Lassen On the road to Mt. Lassen, five miles from Westwood 1828 Comment
  CAS-BOT-BC272110  Centaurea cyanus Margaret Williams; Steven Williams 1974-7-26 74 -L-9 Lassen Near Hallelujah Junction west of Why 395 and south of Hwy 70, Sierra Nevada 1493 Comment
  CAS-BOT-BC277000  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E. side of Hwy 395 to Madelaine, 1.6 mi. n. of Termo Comment
  RSA157739  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Hwy. 395 to Madelaine, 1.6 miles north of Termo Comment
  UCD130020  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen east side of Highway 395 to Madelaine, 1.6 mile north of Termo. Comment
  NY444409  Centaurea solstitialis G. Schoolcraft 1982-8-17 866 Lassen Along Smoke Creek Road, just east of Hwy 395 Comment
  UC1533151  Centaurea virgata subsp. squarrosa G. Schoolcraft 1986-7-28 1666 Lassen about 3.5 mi SW of Nubieber (along Hwy 299) 1402 Comment
  OBI4697  Centaurea virgata subsp. squarrosa T. C. Fuller, W. T. Parsons 1960-7-26 4873 Lassen 4 mi NW of Nubieber, Big Valley Comment
  RSA153397  Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley Comment
  SEINET13331314 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  UCD130125  Centaurea virgata subsp. squarrosa W. T. Parsons; T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley. Comment
  UCD130126  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley. Comment
  UCD150404  Ceratophyllum demersum William Anderson 1963-6-12 s..n. Lassen Honey Lake Valley. Comment
  JEPS126476  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-26 CA 350 -064 Lassen Take CA 36 W, turn right onto CA 44 W, near Old Station, close to 500 ft off Highway 44. Comment
  CHSC32986  Cercocarpus ledifolius var. ledifolius Robert Smallwood 1970-7-8 138 Lassen Approx. 300 yds. north of E.L.B.S. 1524 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
  JEPS112814  Chaenactis douglasii Dean W. Taylor 1974-6-14 3723 Lassen Plumas National Forest; Janesville Grade Road, at summit ca. 4 mi SSW of Janesville 1706 Comment
  JEPS122364  Chaenactis douglasii Jaycee Leonard, Mike Dolan 2012-8-3 CA 320 -120 Lassen From Alturas head south on Highway 395. At the town of Termo turn left onto Juniper Ridge road. Then turn left onto Cold Springs road. Collection is at top of Cold Springs mountain along ridge Comment
  RSA637572  Chaenactis douglasii Michael A. Vincent 1999-6-9 8582 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CAS-BOT-BC276615  Chaenactis douglasii var. douglasii Louella Bass 1973-6-14 104 Lassen Elysian Valley 1325 Comment
  CHSC13597  Chaenactis douglasii var. douglasii J. Pitts 1972-6-22 256 Lassen 20 yds. se of Shepherd's Hall, Eagle Lake Field Station. Comment
  HSC42418  Chaenactis douglasii var. douglasii Barbara Kelly 1977-8-9 560 Lassen 16 1/4 mi. E of Madeline on the dirt road from Adin Comment
  JEPS117489  Chaenactis douglasii var. douglasii Lowell Ahart, John Dittes 2010-7-31 16984 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  CAS-BOT-BC276621  Chaenactis douglasii var. douglasii Gary Schoolcraft 1982-7-6 766 Lassen Fort Sage Mountains, near Jesus Spring 1950 Comment
  UCD19699  Chaenactis nevadensis Donald W. Kyhos 1967-9-1 67 -87 Lassen Mount Lassen National Park, in the devastated area within 1/2 mile north of Hat Lake. Comment
  CHSC64751  Chaenactis stevioides Vernon H. Oswald 1995-6-7 6839 Lassen Modoc Plateau. Ridge on the n side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi e of Wendel, ne of Susanville. 1261 Comment
  CHSC19727  Chamaebatiaria millefolium Mary E. Meyer 1973-7-7 14 Lassen Located west of ELBS water tower. 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
  CHSC14075  Chamaesaracha nana K. R. Stern 1974-6-26 5872 Lassen Adjacent to Pine Creek, 3.7 mi n of intersection between County Rd. A-21 to Westwood and Hwy. 44, on e side of Hwy. 44. Comment
  UC1542162  Chamaesaracha nana Paul Covel 1986-6-6 Lassen e of Chester (Lake Almanor dike); Lake Almanor Comment
  CHSC27603  Chamaesyce serpillifolia subsp. serpillifolia Jerry Snodgrass 1978-7-25 Lassen Near Field Station (CSUC), E side of Eagle L., at wide spot in dirt road. 1554 Comment
  CHSC76100  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8234 Lassen On the west side of Highway 139, near the south end of Eagle Lake and the highway, Eagle Lake. 1554 Comment
  JEPS52357  Chamaesyce serpyllifolia Brown and Wieslander 1922-7-7 90 Lassen Eagle Lake, Martin Springs Comment
  NY1001693  Chamaesyce serpyllifolia G. Schoolcraft 1981-8-11 556 Lassen Near edge of Said Valley Reservoir 1615 Comment
  CHSC6213  Cheilanthes gracillima P. Balch 1955-6-1 Lassen Silver Lake, Eagle Lake. 1981 Comment
  CHSC76275  Chenopodium album Lowell Ahart; Vernon H. Oswald 1999-9-13 8222 Lassen On the north side of Mapes Road, about 1/2 mile east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CHSC106830  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet. 1524 Comment
  UC1191355  Chenopodium berlandieri Verne Grant and Irving Schneider 1947-8-1 8229 Lassen irrigation ditch running sw into State Fish and Game nesting area on west end of Section 19; Madeline Plain Comment
  CAS-BOT-BC473049  Chenopodium desiccatum Margaret Williams; Steven Williams 1974-7-26 74 -L-36 Lassen Sierra Nevada. Burned area near Hallelujah Junction, W of Hwy 395 and S of Hwy 70 1493 Comment
  UC1191341  Chenopodium glaucum Malcolm A. Nobs and S. Galen Smith 1949-7-22 1072 Lassen Eagle Lake; n shore Comment
  UCD54572  Chenopodium glaucum Ellen Dean; Dawn Cunningham 2005-10-25 2755 Lassen E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond. 1248 Comment
  CHSC68860  Chenopodium simplex Vernon Oswald; Lowell Ahart 1997-6-24 8602 Lassen South of Susanville on the north side of Diamond Mtn., at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. 1655 Comment
  CAS-BOT-BC451322  Chimaphila Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CAS-BOT-BC383110  Chrysolepis sempervirens Andrew Townesmith; Karen M. Meyer 2007-7-22 841 Lassen Lassen National Forest, Almanor Ranger District. Little Tule Lake, 6.1 miles west county road A21 on county road 110 and Forest Service road 10 1980 Comment
  RSA0094567  Chrysothamnus viscidiflorus subsp. puberulus Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31420 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
  CHSC42146  Chrysothamnus viscidiflorus subsp. viscidiflorus C. E. Laver 1985-8-14 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. Along roadsides. 2194 Comment
  OBI5967  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2396 Lassen Big Valley, 2.6 mi from Bieber on the road to Alturas 1268 Comment
  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
  UC1567437  Chylismia claviformis subsp. cruciformis G. Schoolcraft 1989-5-16 1875 Lassen w Hwy 395 (ca 2 mi s of Karlo turnoff) 1356 Comment
  CAS-BOT-BC279833  Cichorium intybus Louella Bass 1973-6-15 109 Lassen Elysian Valley 1325 Comment
  CDA38208  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  SDSU3763  Cirsium andersonii D. F. Howe 1964-8-1 3911 Lassen 3.3 miles on ridge road from Harvey Creek, Warner Mts., Modoc National Forest. 1951 Comment
  CAS-BOT-BC284384  Cirsium arvense John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49418 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC277934  Cirsium canovirens T. C. Fuller 1959-7-7 2739 Lassen Hwy. 395 6 miles/north/road to Karlo Comment
  CAS-BOT-BC278006  Cirsium cymosum Alice Eastwood; John Thomas Howell 1940-6-15 8308 Lassen Willow Creek near Hayden Hill Comment
  CAS-BOT-BC278004  Cirsium cymosum T. C. Fuller 1959-7-7 2740 Lassen Hwy. 395, 7 miles north/road to Karlo Comment
  CDA1259  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 -A Lassen 28 km NE of Ravendale; east shore of Dodge Reservoir, 0.4 km east of campground. 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
  SEINET7144190  Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay; Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junction with Calif 70 (Halleluja Junction).; 0 1524 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
  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
  RSA186825  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  RSA186826  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  RSA186832  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CDA37712  Cirsium ochrocentrum Breckenridge/Filippini 2007-6-13 s.n. Lassen Madeline Plains, western edge, along Westside Road, old Basque homestead. 0 Comment
  CAS-BOT-BC286310  Cirsium scariosum James Jokerst 1983-7-25 1894 Lassen Near Madeline Plains 1614 Comment
  JEPS59259  Cirsium scariosum Brown and Wieslander 1922-7-23 91 Lassen Martin Sprs. Eagle Lake, Martin Sprs. Comment
  CAS-BOT-BC162636  Clarkia John Thomas Howell 1974-7-30 s.n. Lassen Diamond Mountain - Sierra Nevada 2286 Comment
  LA47494  Clarkia gracilis subsp. albicaulis Clare B. Hardham; 1961-6-16 7485 Lassen Gold Run Creek, S of Susanville Comment
  HSC81478  Clarkia lassenensis Thomas W. Nelson, Jane P. Nelson 1980-7-6 6020 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  NY999400  Clarkia lassenensis N. H. Holmgren 1980-7-4 9517 Lassen Observation Peak, south slope of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  CHSC6185  Clarkia purpurea subsp. viminea 1944-7-1 Lassen Eagle Lake. 1584 Comment
  CAS-BOT-BC164867  Clarkia rhomboidea Louella Bass 1978-6-10 78 -1 Lassen Elysian Valley 1325 Comment
  UC1122437  Clarkia rhomboidea A. Simontacchi 1940-6-23 885 Lassen 3.2 mi sw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC773910  Clarkia rhomboidea L. R. Short, J. Warren 1936-6-23 S- 448 Lassen Burgess Spring Experimental Range Lassen Forest 1798 Comment
  CAS-BOT-BC164868  Clarkia rhomboidea H. D. Ripley; R. C. Barneby 1943-6-13 5693 Lassen South of Milford 1432 Comment
  CHSC61167  Claytonia lanceolata Vernon H. Oswald; Lowell Ahart 1993-5-12 5381 .1 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
  CHSC71096  Claytonia rubra subsp. depressa Vernon H. Oswald; Lowell Ahart 1998-5-22 9124 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. Locally abundant in moist soil along a drying streamlet in a shallow ravine eroded in granitic boulders. 1463 Comment
  JEPS114657  Claytonia rubra subsp. depressa Lowell Ahart, John Dittes 2008-6-20 14910 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
  JEPS94123  Claytonia rubra subsp. depressa Vernon H. Oswald and Lowell Ahart 1998-5-22 9124 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  CHSC108022  Claytonia rubra subsp. rubra Lowell Ahart; John Dittes 2011-6-20 17486 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  SBBG12321  Claytonia rubra subsp. rubra A. I. Richardson 1961-5-30 6 Lassen rd S of Eagle Lake 1402 Comment
  NY222830  Cleome platycarpa G. H. True Jr. 1937-6-27 792 Lassen Near Skeedaddle. 1524.0 Comment
  SEINET3153948  Cleome platycarpa J. L. Strother 1970-5-23 951 Lassen About 6 miles N of Honey Lake, at ca. 4200 feet elevation. 1280 Comment
  UC1567444  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi n Wendel Rd. (along Skedaddle Ranch Rd) 1463 Comment
  CAS-BOT-BC423225  Cleomella plocasperma G. Schoolcraft 1998-7-14 2759 Lassen Along Wendel Rd. near Amedee Hot Spring area. 1219 Comment
  CDA25308  Cleomella plocasperma T. C. Fuller 1980-8-6 20324 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  CHSC100886  Cleomella plocasperma L. P. Janeway 2008-8-2 9530 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  JEPS48621  Cleomella plocasperma Hilda W. Grinnell 1934-6-3 Lassen Amedee 1219 Comment
  UC1533121  Cleomella plocasperma G. Schoolcraft 1986-6-11 1620 Lassen about 1 mi w CA-NV stateline (along Smoke Creek Road) 1341 Comment
  UCD150400  Cleomella plocasperma Harry A. George and F. K. 1957-8-15 s.n. Lassen Honey Lake Wildlife Area, Dakin Unit. Comment
  RSA60368  Collinsia parviflora E. K. Balls 1950-5-9 15951 Lassen 6 miles south of Milford, Hwy 395. 1296 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
  UC1187149  Collinsia torreyi var. wrightii Jean Langenheim 1957-6-26 4379 Lassen Northwest Said Valley, northeastern part of Lassen County Northwest Said Valley Comment
  CHSC30572  Collomia grandiflora Sori H. Shad 1970-7-1 33 Lassen Found 3/4 mile past Murrer's. Meadow near edge of road. 1524 Comment
  CHSC4774  Collomia grandiflora R. Carter 1967-6-27 565 Lassen Ca. 10 yds off S side of Rd. 1.75 mi W of Eagle Lake Biology Station. 1584 Comment
  UC1137779  Collomia grandiflora August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest/Forest and Range Exp't Station 2133 Comment
  JEPS28714  Collomia tinctoria George W. Gillett 1957-7-29 949 Lassen along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  SBBG58209  Collomia tinctoria E. Rockwell -Jun-1925 Lassen Eagle Lake 1554 Comment
  UC1601297  Collomia tinctoria Franklin P. Nutting Lassen Pine Creek Comment
  UC1567424  Comandra umbellata subsp. californica G. Schoolcraft 1989-6-7 1908 Lassen Shaffer Mountain near top Shaffer Mountain 2011 Comment
  CAS-BOT-BC179604  Comandra umbellata subsp. pallida G. Schoolcraft 1989-6-7 1908 Lassen NW slope of Shaffer Mtn. near top 2011 Comment
  CHSC66260  Comarum palustre Vernon H. Oswald; Lowell Ahart 1996-6-24 7891 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the springs on the E side of the meadow. 1633 Comment
  HSC95339  Comarum palustre Gordon Leppig, J. Cromwell 1997-7-27 607 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  CHSC112977  Conium maculatum Lowell Ahart; John Dittes 2013-7-23 18901 Lassen West side of the road levee, about 80 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC6282  Convolvulus arvensis D. L. Stites 1967-7-1 141 Lassen 10 mi se of Eagle Lake Biology Station on Lower Murrer's Meadow. 1371 Comment
  JEPS17409  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 m <e?> of Nevada line, 17.5 m w of US Hwy 395); drainage of Rush Creek Comment
  CHSC77234  Cordylanthus ramosus G. Schoolcraft 1999-8-10 2873 Lassen S. of Doyle Grade about 2.5 mi. w. of Doyle, CA. 1584 Comment
  JEPS11644  Cordylanthus ramosus R. F. Hoover 1940-9-28 4640 Lassen Leavitt, 8 mi e of Susanville; Leavitt Comment
  JEPS95014  Cornus sericea subsp. sericea Vernon Oswald and Lowell Ahart 1997-6-24 8611 Lassen 0.7 mi e of Lassen National Forest boundary (5.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at a springy slope with streamlets along Forest Road 29N43); Diamond Mountain, Forest Road 29N43 1889 Comment
  RSA716340  Crepis acuminata L. Ahart, John Dittes 2005-6-2 11933 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  UC581223  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1936-6-7 1763 Lassen ne slope of ridge near summit east of Red Rock 1818 Comment
  CHSC29884  Crepis bakeri Robin L. Ondricek 1978-7-15 98 Lassen On the ne and nw sides of Lower Dry Lake in the area where the trees begin. 1645 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
  UC91874  Crepis intermedia T. S. Brandegee 1892-7-26 Lassen near Honey Lake; Milford Comment
  UC581249  Crepis modocensis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2257 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Co.) Comment
  CAS-BOT-BC291584  Crepis modocensis subsp. subacaulis G. L. Stebbins; J. A. Jenkins 1937-7-10 2278 Lassen Slope of Diamond Mt. 2286 Comment
  UC540867  Crepis occidentalis David D. Keck and J. Clausen 1935-6-24 3752 Lassen 2 mi s Ravendale 1463 Comment
  UC581267  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2304 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  UCD130972  Crepis occidentalis J. E. Stuart 1930-6-12 2158 Lassen near Constantia, Reno Highway. 15 Comment
  CAS-BOT-BC290823  Crepis occidentalis subsp. pumila Elmer I. Applegate 1934-5-4 8915 Lassen South of Secret Valley Comment
  CDA4444  Crepis occidentalis subsp. pumila T. C. Fuller 1963-6-1 10619 Lassen West side of road to Susanville, 2.0 mi. south of Pittville. 0 Comment
  POM70805  Cressa truxillensis Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CHSC5053  Cryptantha L. B. Barlow 1967-6-23 15 Lassen 1/4 mi. north Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC29967  Cryptantha affinis R. A. Schlising 1979-6-7 3450 Lassen Sof Eagle Lake, in Lassen National Forest, 5 mi N of Hwy 36, on Hwy A1. Comment
  NY1153786  Cryptantha affinis H. D. D. Ripley 1943-6-14 5720 Lassen West of Susanville 4750 Comment
  CHSC64840  Cryptantha ambigua Vernon H. Oswald 1995-6-26 6918 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  NY1112275  Cryptantha ambigua B. J. Ertter 1987-6-16 7199 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  SDSU20522  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 522 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  CHSC13453  Cryptantha circumscissa J. Pitts 1972-6-23 267 Lassen 50 yds. E of Eagle Lake Field Station. Comment
  CHSC62440  Cryptantha circumscissa K. L. Chambers; Peter Dorris 1963-5-4 2028 Lassen Hwy. 395, 10 mi. n. of junction with Alt. Hwy. 40 (later renumbered Hwy. 70). Comment
  CHSC7765  Cryptantha circumscissa Beverly J. Wise 1969-5-18 77 Lassen 17.2 mi. East of Susanville on Las. Co. Rd 216 off Las. Co. Rd. 215. 1524 Comment
  UC1063881  Cryptantha circumscissa E. Sawyer 1935-6-27 220 Lassen Long Valley Sierraville Quad. 1310 Comment
  UC699733  Cryptantha circumscissa Farris Farris 1936-6-5 Lassen Airport, Susanville Susanville 1280 Comment
  CAS-BOT-BC189458  Cryptantha circumscissa var. circumscissa Alice Eastwood; John Thomas Howell 1940-6-16 8333 Lassen Near Susanville Comment
  POM252792  Cryptantha hendersonii A. A. Heller 1938-6-23 15206 Lassen Lassen County the ridge E of Mapes on Hwy 395. 1372 Comment
  UC1562830  Cryptantha humilis Barbara Ertter with Gary Schoolcraft 1987-6-16 7182 Lassen w of Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2133 Comment
  UC584347  Cryptantha humilis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2267 Lassen sw of Diamond Mt. (s of Susanville) 2164 Comment
  SEINET10906625  Cryptantha humilis Paul Gallian, David B. Dunn 1971-6-2 Gallian 507 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
  SDSU20598  Cryptantha intermedia var. hendersonii Ronald B. Kelley 2005-6-30 897 Lassen Western end of Skedaddle Mountains along BLM road from Wendel to Smoky Ranch Rd., 5.1 miles north of paved road junction, north of Wendel. 1538 Comment
  JEPS103177  Cryptantha muricata G. Schoolcraft 2000-6-19 2903 Lassen West of Cold Springs Valley 1706 Comment
  JEPS94701  Cryptantha pterocarya Vernon H. Oswald and Lowell Ahart 1998-5-22 9112 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0;.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  NY1111892  Cryptantha pterocarya var. pterocarya G. Schoolcraft 1982-4-29 635 Lassen Amedee Canyon 1280 Comment
  JEPS103198  Cryptantha simulans G. Schoolcraft 1993-6-29 2305 Lassen Ash Valley RNA 16 miles E of Adin S of T in Co. Road 1554 Comment
  UC507028  Cryptantha simulans George A. Fischer and Irwin H. Johnson 1933-7-14 F- 260 Lassen Lassen Forest 1783 Comment
  CHSC27925  Cryptantha torreyana M. S. Taylor 1974-7-10 280 Lassen In meadow, ca. 1/2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  CHSC27926  Cryptantha torreyana M. S. Taylor 1974-7-9 267 Lassen Ca. 500 yds n of Eagle Lake Field Station, ca. 12 mi nw of Susanville. 1524 Comment
  HSC68930  Cryptantha watsonii Gary Schoolcraft 1980-5-7 219 Lassen On Honey Lake Island 1220 Comment
  SEINET8191424  Cryptantha watsonii F. B. Headley 1915-5-28 s.n. Lassen Honey Lake Comment
  CHSC23497  Cuscuta Wayne O. Baum 1971-7-14 71 -63 Lassen Gallatin Peak. 2011 Comment
  RSA262506  Cuscuta approximata Lee Smith 1975-9-4 s.n. Lassen A1 Blickenstaff Farm, near Honey Lake, 3 miles south of Janesville. Comment
  RSA0049668  Cusickiella douglasii Dean Wm. Taylor 2012-5-15 21198 Lassen Hayden Hill Mine region, stony flats along the county road about 1 mile East of Snyder Waterhold 1722 Comment
  UC1541364  Cycladenia humilis var. humilis H. E. and S. T. Parks 1928-6-20 Lassen Mt. Lassen, Drakesbad 2133 Comment
  UC1133514  Cyperus squarrosus H. S. Yates 1936-8-11 6065 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  CAS-BOT-BC114056  Cyperus squarrosus George Wilson Gillett 1957-9-4 1125 Lassen Widow Lake. East margin of lower lake, near inlet in drying mud. 2072 Comment
  UC4436  Cypripedium californicum Mrs. R. M. Austin 1882-1 Lassen Mt. Dyer Comment
  CAS-BOT-BC208394  Dalea ornata Arnold Tiehm; Raymond Evans; James Young 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest if Litchfield 1371 Comment
  RSA324194  Dalea ornata A. Tiehm, Raymond Evans, James Young 1984-6-7 8592 Lassen Flats n the northwest side of Shaffer Mountain. 7.5 airmiles NNW of Litchfield. 1372 Comment
  CHSC29916  Damasonium californicum Robin L. Ondricek 1978-7-5 83 Lassen Along the edges of Mahogany Lake. 2057 Comment
  UC1483795  Damasonium californicum G. Schoolcraft 1979-6-26 98 Lassen Buckthorn Lake n.w. of Pyramid Lake 1889 Comment
  CAS-BOT-BC445514  Damasonium californicum 1927-7-15 72 Lassen Lassen National Forest. Feather Lake 1737 Comment
  CAS-BOT-BC445516  Damasonium californicum Clarence R. Quick 1964-8-4 64 -99 Lassen Reservoir at Long's cabin between Black's Mt. and Experimental Forest 1783 Comment
  JEPS124717 Image available Damasonium californicum M. L. Wheelis 1964-6-30 137 Lassen Second bridge (to the north) between Bieber and New Bieber. Comment
  UCD138002  Damasonium californicum Calvin McMillan; Malcom A. Nobs 1949-6-15 784 Lassen Nubieber. Comment
  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
  UCD61329  Danthonia unispicata Beecher Crampton 1960-6-18 5721 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CHSC48859  Dasiphora fruticosa Vernon Oswald 1986-8-7 2270 Lassen Hwy 36, 12.6 mi e of the Lassen-Plumas County line, 0.8 mi e of Fredonyer Pass. Roadcut. 1706 Comment
  SDSU4575  Deinandra lobbii D. F. Howe 1961-8-4 3135 Lassen 11.5 miles east of Mc Arthur on U.S. 299. 1372 Comment
  UC1924204  Deinandra lobbii Debra Valov 2005-8-20 2005220 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC1425  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along U.S. Highway #395 between Termo and Madeline Comment
  CHSC7730  Delphinium andersonii Beverley J. Wise 1969-5-18 83 Lassen 7.7 mi. West of Susanville on Las. Co. Rd. 215 on the south side of the road. 1341 Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  CHSC5070  Delphinium depauperatum D. L. Stites 1967-7-4 106 Lassen Ca. 8 mi s of Eagle Lake Biology Station, Deans Meadow. 1950 Comment
  UC1184063  Delphinium depauperatum Jean Langenheim 1957-6-26 4391 Lassen areas adjacent to 1937 chaparral quadrat (nw <part of> valley, ne part of Lassen Co.); Said Valley Comment
  UC477491  Delphinium nudicaule A. G. Brenneis 1928-5-28 1 Lassen 1/2 mi e Willow Springs; Lassen <National> Forest 1371 Comment
  CAS-BOT-BC9943  Delphinium nudicaule H. D. Ripley; R. C. Barneby 1943-6-14 5128 Lassen Fredonyer Pass 1706 Comment
  CAS-BOT-BC116045  Delphinium nuttallianum Doris Kildale Gillespie 1930-5-14 9380 Lassen Fredonia Pass near Susanville. Comment
  CAS-BOT-BC116468  Delphinium nuttallianum A. A. Heller 1938-6-4 s.n. Lassen ...about 2 miles south of Westwood 1463 Comment
  HSC27049  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19195 Lassen Harvey Valley near Cone Springs Comment
  UC1126095  Delphinium nuttallianum A. Simontacchi 1940-5-14 708 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  OBI75897  Deschampsia cespitosa Anthony Baniaga 2011-8-17 508 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1978 Comment
  UC1142937  Deschampsia cespitosa A. L. Hormay 1941-6-23 16 Lassen Burgess Spring 1676 Comment
  CAS-BOT-BC194262  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1959-9-23 34888 Lassen Juniper Lake north end, Lassen Park 2057 Comment
  JEPS28061  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-7-22 876 Lassen 100 yds. above lake near s. shore Snag Lake; Lassen Volcanic Nat'l Park, Snag Lake 1850 Comment
  UC1137794  Deschampsia cespitosa subsp. cespitosa George A. Fischer and Irwin H. Johnson 1933-7-15 F 244 Lassen Patterson Flat Lassen Forest, Patterson Flat 1737 Comment
  UC1142950  Deschampsia cespitosa subsp. cespitosa A. L. Hormay 1941-6-23 13 Lassen Burgess Spring Lassen Nt'l Forest, Burgess Spring 1676 Comment
  UC188776  Deschampsia cespitosa subsp. cespitosa Milo S. Baker July 1894 Lassen Eagle Lake Comment
  CAS-BOT-BC192745  Deschampsia danthonioides Malcom A. Nobs; S. Galen Smith 1949-7-21 1059 Lassen 4 miles north of Madeline Comment
  HSC100183  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 2011-8-15 13379 Lassen Along Hwy. 36 at the intersection with the Bizz Johnson Trailhead Road. Comment
  SEINET10524169  Deschampsia danthonioides R. Ondricek 1978-7-15 Ondricek 102 Lassen In dried mud where the spring arises above the dam at Murrers Upper Meadow. T32N, R11E, e edge of Sec. 26. in the Fredonyer Peak Quadrangle, 15'. 1548 Comment
  CAS-BOT-BC201809  Deschampsia elongata Malcom A. Nobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  CAS-BOT-BC201812  Deschampsia elongata Clare B. Hardham 1971-8-22 18375 Lassen Diamond Mountain 2346 Comment
  JEPS68512  Deschampsia elongata Brown and Wieslander 1922-7-19 Lassen Martin Springs meadow 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
  CHSC7706  Descurainia incana Beverley J. Wise 1969-4-29 38 Lassen 3.4 mi. north of Susanville on Rnd Valley Rd off Hwy 139. 1371 Comment
  CDA42999  Descurainia nelsonii L. Ahart, John Dittes 2008-6-19 14891 Lassen West bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  CHSC25101  Descurainia pinnata W. R. Lessig 1967-6-24 3 Lassen 1/4 mi. N. of Eagle Lake Biology Station. 1584 Comment
  CHSC13943  Descurainia sophia M. S. Taylor 1974-6-20 258 Lassen Ca. 100 yds ne of Eagle Lake Field Station, ca. 1 ft e of Whitehead Rd, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC57356  Descurainia sophia B. G. Clark 1987-4-15 22 Lassen Lassen or Inyo counties. Top of knoll 1/4 mi sw of Lassen College adjacent and west of hwy 139. Comment
  CHSC93563  Descurainia sophia Lowell Ahart; John Dittes 2005-6-2 11925 A Lassen Long Valley, along the road, near the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  RSA716273  Descurainia sophia L. Ahart, John Dittes 2005-6-2 11925 -A Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction. 1460 Comment
  SEINET10841501  Descurainia sophia Mary Susan Taylor 1974-1 Taylor 258 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC402570  Dicentra uniflora Duncan Dunning 1922-5-15 s.n. Lassen Lassen National Forest. Facht - Robber Creek 1524 Comment
  CAS-BOT-BC502558  Dichelostemma congestum A. M. Vollmer; L. Beane 1953-7-1 95 Lassen Along Halls Flat road, beginning 6 mi W of Susanville to McCarthur 1554 Comment
  CAS-BOT-BC500987  Dichelostemma multiflorum Alice Eastwood; John Thomas Howell 1940-6-11 7971 Lassen Big Valley Mts. Comment
  CAS-BOT-BC299811  Dieteria canescens var. canescens Mrs. H. C. Cantelow 1940-10-5 s.n. Lassen About 1 1/2 mi. N.W. of Johnstonville, east of Sierra Nevada Mts. Comment
  UC1523806  Dieteria canescens var. canescens Gary Schoolcraft 1982-7-7 769 Lassen Ft. Sage Mtns. 1950 Comment
  UCSB25961  Dieteria canescens var. shastensis Wilken, Dieter; Haller, John; Langford, A. 1968-9-12 Lassen Along California Highway 36, 11.2 miles east of Chester 1524 Comment
  CAS-BOT-BC153682  Diplacus mephiticus Margaret Williams; Steven Williams 1974-7-26 74 - L - 35 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SEINET13704195  Diplacus mephiticus A. A. Heller, P. B. Kennedy 1907-7-1 8672 Lassen Near Old Chat. Comment
  CAS-BOT-BC151433  Diplacus nanus D. B. Dunn; B. J. Cox 1971-6-2 17798 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 1402 Comment
  CAS-BOT-BC154007  Diplacus torreyi A. M. Vollmer; L. Beane 1953-7-1 48 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC208724  Distichlis spicata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16339 Lassen On dam forming reservoir north of road 13.5 mi. E of Susanville Comment
  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
  CHSC33328  Distichlis spicata P. Reynolds 1979-7-4 6 Lassen 1/2 mi. se of Wendel, 25 yds. from RR tracks. 1219 Comment
  JEPS107865  Distichlis spicata Lowell Ahart, John Dittes 2005-6-2 11922 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  SBBG115909  Distichlis spicata J. T. Howell 1973-7-10 49764 Lassen near Westwood 1554 Comment
  CAS-BOT-BC136177  Dodecatheon alpinum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  CAS-BOT-BC136178  Dodecatheon alpinum A. M. Vollmer; L. Beane 1953-7-1 90 Lassen Along Halls Flat Road, beginning 6 miles wet of Susanville to McArthur 1554 Comment
  SD61013  Dodecatheon alpinum subsp. majus Darley F. Howe 1964-7-31 3899 Lassen Meadow above Blue Lake, Warner Mts., Modoc National Forest 1890 Comment
  UC1776683  Dodecatheon conjugens G. Schoolcraft 1999-5-5 2814 Lassen Along Tuledad Road about 2 mile NE of Dodge Reservoir 1859 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
  CHSC12415  Downingia bacigalupii Anne Linda Brisk 1969-6-26 30 Lassen Growing in Papoose Meadow, 13.5 mi SW of ELBS. 1658 Comment
  CHSC60825  Downingia bacigalupii Vernon H. Oswald; Lowell Ahart 1993-6-28 5612 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 Comment
  RSA436116  Downingia bacigalupii Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC1368461  Downingia bacigalupii R. K. Gierisch 1969-7-18 3549 Lassen Madeline Plains, near Modoc Forest/Expt. Area Madeline Plains 1615 Comment
  UCD33603  Downingia bacigalupii Beecher Crampton 1970-6-26 8637 a Lassen Lassen County, ca. 5 miles west of Susanville. 1524 Comment
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  CHSC59527  Downingia bicornuta Mary Meyer 1980-7-9 506 Lassen Horse Camp Springs, down-stream in cow pod. 1706 Comment
  JEPS14500  Downingia bicornuta var. bicornuta Joseph Grinnell 1928-6-26 Lassen Poison Lake 1737 Comment
  UC157671  Downingia bicornuta var. bicornuta Milo S. Baker Lassen near Eagle Lake Comment
  JEPS108502  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 221 -95 Lassen E edge of Poison Lake. N on Pittville Rd. off of Rt. 44. E of Shasta/Lassen county line. Comment
  JEPS108509  Downingia bicornuta var. bicornuta Lisa Schultheis 1995-6-27 223 -95 Lassen Large vernal pool W of Champs Flat (W of Eagle Lake). Corner of 33N56Y and 33N06. Comment
  SFV3644  Downingia elegans I. L. Wiggins, D. B. Wiggins 1961-6-16 16532 Lassen Dry, roadside swale in Big Valley, 2.5 miles east of Modoc-Lassen County liine. 1280 Comment
  JEPS23858  Downingia insignis Peter H. Raven 1958-6-17 13282 Lassen 1.9 mi s Ravendale (along U.S. Highway 295) Comment
  CAS-BOT-BC266473  Downingia laeta Malcom A. Nobs; S. Galen Smith 1949-7-20 1047 Lassen Bieber, along Highway 299 Comment
  POM175682  Downingia laeta R. S. Williams 1887-7-30 s.n. Lassen Near Augusta (?) Comment
Read comments
Jul 9 2013
  SEINET10539558  Draba David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17801 Lassen 6 mi. N of hallelujah jct. On u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  JEPS94484  Draba verna Vernon H. Oswald and Lowell Ahart 1997-5-27 8522 Lassen 3.6 mi ne of Highway 139 (small impoundment on Coyote Flat Draw crossing Forest Route 38N04, between Hwy 139 near Willow Creek Guard Station and Coyote Flat); Coyote Flat Draw crossing Forest Route 38N04 1731 Comment
  SEINET10448469  Draba verna Mary Susan Taylor 1982-5-7 Taylor 4428 Lassen T22N R17E n/nw sec 5. Beckwourth Pass quad. Reno Jct and along old road paralleling Hwy 70, just e of Beck- wourth Pass, ca. 1/4 mi w of Hallelujah Jct on Hwy 395. Sagebrush Scrub; 5000 ft. 1524 Comment
  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
  JEPS106520  Drymocallis glandulosa var. glandulosa L. P. Janeway 2004-6-26 8154 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest 1750 Comment
  CAS-BOT-BC527338  Drymocallis glandulosa var. reflexa John Thomas Howell 1977-6-22 52405 Lassen West of Susanville near the confluence of Willard Creek and Susan River, Sierra Nevada 1432 Comment
  CAS-BOT-BC159382  Drymocallis lactea var. austiniae Clare B. Hardham 1971-8-22 18387 Lassen Diamond Mountain 2346 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  CHSC112423  Elatine Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18752 Lassen Plants near pond, about 80 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC112750  Elatine californica Lowell Ahart; John Dittes 2013-7-22 18882 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60975  Elatine chilensis Lowell Ahart 1993-5-17 6954 Lassen On the west side of Dunstone Road, about 1-1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. Comment
  CHSC112748  Elatine rubella Lowell Ahart; John Dittes 2013-7-22 18883 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 Comment
  CAS-BOT-BC113591  Eleocharis acicularis John Thomas Howell 1959-9-23 34892 Lassen Juniper Lake camp grounds, Lassen Park 2057 Comment
  CAS-BOT-BC112846  Eleocharis macrostachya John Thomas Howell 1973-7-10 49805 Lassen Near Susanville on road to Janesville. 1295 Comment
  UC1142940  Eleocharis palustris A. L. Hormay 1941-6-18 2 Lassen Little Harvey Valley 1676 Comment
  RSA127038  Eleocharis quinqueflora Robert W. Gardner 1939-6-15 G- 36 Lassen Little Harvey Valley 1700 Comment
  UC767490  Elymus X saundersii R. F. Hoover 1940-9-28 4631 Lassen Susanville Comment
  UCD32663  Elymus X saundersii Beecher Crampton 1954-7-5 2061 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  HSC5270  Elymus cinereus M. T. Milligan 1964-8-6 197 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CAS-BOT-BC227489  Elymus elymoides David D. Keck; J. Clausen 1935-6-24 3751 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC227492  Elymus elymoides Louella Bass 1973-6-3 EU 97 Lassen Elysian Valley 1325 Comment
  JEPS126479  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-30 CA 350 -043 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  JEPS126503  Elymus elymoides var. californicus Jocelyn Munoz 2016-8-17 CA 350 -80 Lassen Heading north on 139, turn right onto Horse Lake Road. Continue east on Horse Lake Road passed lake. Take a left on an unnamed road about 3.5 miles east of lake. Then turn right on the first unnamed road with a NW aspect. Comment
  SEINET10554356  Elymus glaucus R. Ondricek 1978-7-22 Ondricek 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. T31N, R11E, sw quarter of Sec. 8, Antelope Peak Quadrangle. 1585 Comment
  CAS-BOT-BC206733  Elymus glaucus subsp. glaucus John Thomas Howell 1976-7-19 51987 Lassen Gold Run Creek southwest of Susanville - Sierra Nevada 1386 Comment
  CAS-BOT-BC234092  Elymus multisetus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16343 Lassen Hillside 13.5 mi. E of Susanville Comment
  JEPS127709  Elymus spicatus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -163 Lassen Cold Springs Road North of Bryn Marr Ranch. Comment
  JEPS68378  Elymus trachycaulus Brown and Wieslander 1922-7-23 74 Lassen Martin Springs Comment
  UC1136821  Elymus trachycaulus George A. Fischer and Irwin H. Johnson 1933-7-12 F 230 Lassen Patterson Flat Lassen <National> Forest 1737 Comment
  UCD62694  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1932-7-1 Lassen Lassen National Forest. Bogard Ranger Station. Comment
  SEINET3129054  Elymus triticoides J. B. Davy 1897-1 sn Lassen Honey Lake Valley. Comment
  CHSC76104  Elytrigia elongata Lowell Ahart; Vernon H. Oswald 1999-9-13 8212 Lassen On the edge of a canal, just south of the parking area and about 100 yards to the east, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  CHSC30602  Ephedra viridis L. J. Dawson 1975-7-7 43 Lassen 6 mi from Hwy. 395 on Ravensdale Road. 1584 Comment
  CHSC60268  Ephedra viridis P. V. Caldwell 1972-6-30 299 Lassen 22 mi from Hwy 139, 7 mi w of Ravensdale (turnoff 15 mi from Susanville). 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
  SEINET3868652  Ephedra viridis D. W. McNeal 1980-6-1 2337 Lassen Above Hwy. #139, 5.4 mi. n. of the jct. of Hwy. #36 in Susanville.; 0 Comment
  UC766775  Ephedra viridis R. F. Hoover 1940-10-5 4671 Lassen pass between Shaffer Mt. and Warren Peak Comment
  SEINET10532255  Ephedra viridis Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 893 Lassen Collected 3 mi N of Milford, Callif., on Hwy 395 at Honey Lake campgrounds. Comment
  HSC16378  Epilobium anagallidifolium M. T. Milligan 1964-7-16 143 Lassen 2 mi. W on Silver Lake Rd., along Upper Susan River 1829 Comment
  JEPS121278  Epilobium brachycarpum Lowell Ahart 2013-7-22 18844 Lassen W margin of duck field, about 20 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET12541858  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1137772  Epilobium brachycarpum August L. Hormay 1934-7-2 Lassen Black's Mtn. Headquarters Lassen National Forest 1706 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
  UC773909  Epilobium brachycarpum L. R. Short and Wm. Gansberg 1936-8-11 S- 493 Lassen Burgess Spring Experiment Range Lassen National Forest 1746 Comment
  CHSC117519  Epilobium campestre Lowell Ahart; John Dittes 2016-7-13 21128 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Biebeer, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS119650  Epilobium campestre Lowell Ahart, John Dittes 2012-7-9 18285 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC303060  Epilobium canum subsp. latifolium Pearl Safford 111 Lassen Susanville [uncertain locality] Comment
  UC1583987  Epilobium ciliatum subsp. ciliatum G. Schoolcraft 1990-7-11 2108 Lassen n Moon Lake (at reservoir edge); McCabe Spring 1669 Comment
  NY1001463  Epilobium ciliatum var. ciliatum G. Schoolcraft 1990-7-11 2108 Lassen McKabe Spring north of Moon Lake 1669 Comment
  NY1001473  Epilobium ciliatum var. ciliatum V. E. Grant 1947-9-6 8388 Lassen Irrigation ditch west of Fleming Ranch headquarters, near Wendel Comment
  RSA0105579  Epilobium densiflorum Lowell Ahart, John Dittes 2013-7-22 18878 Lassen 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CDA20353  Epilobium densiflorum H. Leach August 1949 s.n. Lassen Modoc Plateau; Madeline Plain. 0 Comment
  POM260404  Epilobium minutum C. L. Hitchcock 1940-5-26 6609 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  HSC95331  Epilobium oregonense Gordon Leppig, J. Cromwell 1997-7-27 605 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  RSA123008  Epilobium paniculatum L. R. Short, Wm. Gansberg 1936-8-11 S- 493 Lassen Lassen Forest, Burgess Spr. Exp. Range 1747 Comment
  NY1000570  Epilobium torreyi N. H. Holmgren 1980-7-3 9492 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale 1700 Comment
  RSA508633  Epipactis gigantea Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  CAS-BOT-BC57302  Equisetum laevigatum John Thomas Howell 1975-7-23 51386 Lassen Susanville 1295 Comment
  JEPS114954  Equisetum laevigatum Lowell Ahart, John Dittes 2008-6-20 14933 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-BC213625  Eragrostis mexicana subsp. virescens John Thomas Howell; G. H. True 1973-7-31 50145 Lassen Susanville 1295 Comment
  CHSC60826  Eremogone congesta var. congesta Vernon H. Oswald; Lowell Ahart 1993-6-28 5582 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  CHSC89740  Eremogone congesta var. congesta L. P. Janeway 2004-6-26 8141 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  CHSC29857  Eremogone congesta var. simulans Robin Ondricek 1978-6-6 32 Lassen At Murrers Upper Meadow, .5 mi E of intersection with main rd. to ELFS and tunnel crossing. 1569 Comment
  CAS-BOT-BC174282  Eremogone congesta var. suffrutescens H. D. Ripley; R. C. Barneby 1943-6-14 5742 Lassen W. of Susanville 1371 Comment
  CAS-BOT-BC159993  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen North of Balls Canyon on U. S. Highway #395 Comment
  CAS-BOT-BC515169  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen Near Plumas Junction Comment
  SEINET7356288  Eriastrum sparsiflorum Richard R. Halse 2004-7-21 6669 Lassen At junction of U.S. Hwy 395 and State Road A 26, ca 11 miles southeast of Milford.; 0 1274 Comment
  UC133906  Eriastrum sparsiflorum Dr. Gustav Eisen July 1891 Lassen Honey Lake Comment
  CDA18273  Eriastrum wilcoxii G. D. Barbe 1974-8-2 1938 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  UCD149881  Eriastrum wilcoxii William Anderson 1963-6-26 s.n. Lassen Honey Lake. Comment
  CAS-BOT-BC286602  Ericameria bloomeri G. Schoolcraft 1987-9-1 1770 Lassen About midway up N. slope of Observation Mtn. along road 2072 Comment
  POM40990  Ericameria bloomeri Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  RSA747338  Ericameria bloomeri K. M. Meyer, A. Townesmith 2007-7-23 155 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
  CAS-BOT-BC298963  Ericameria nauseosa var. hololeuca Ella Dales Cantelow 1938-10-23 2191 Lassen N of Doyle Comment
  CAS-BOT-BC298177  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298178  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 2397 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC298183  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-4 2397 Lassen Big Valley, 3.6 miles from Bieber on road to Alturas 1267 Comment
  JEPS21522  Ericameria nauseosa var. oreophila Joseph Grinnell 1928-7-13 Lassen Petes Valley Comment
  JEPS95709  Ericameria nauseosa var. oreophila Vernon H. Oswald and L. Ahart 1995-8-14 7181 Lassen T31N R15E NW1/4 Sec. 11, 4460 ft, Modoc Plateau, Sagebrush Scrub. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville 1359 Comment
  OBI5655  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-6 2403 Lassen Honey Lake Valley; 3 mi from Wendel on the road to Janesville 1219 Comment
  UC527346  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-5 Lassen 3/4 mi e Termo 1645 Comment
  UCD54535  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2720 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CAS-BOT-BC294187  Ericameria nauseosa var. speciosa John Thomas Howell; Gordon H. True 1973-8-1 50217 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164 Comment
  JEPS21518  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UC1136975  Ericameria nauseosa var. speciosa L. R. Short 1936-9-30 S- 504 Lassen Burgess Spr. Exp. Range Lassen Forest 1755 Comment
  CAS-BOT-BC294188  Ericameria nauseosa var. speciosa L. A. Waitzinger 1923-8-16 s.n. Lassen Susanville, north slope of Inspiration Pt Comment
  CAS-BOT-BC293010  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 1/2 mile from Janesville on the road to Wendel - Western edge of Honey Lake Valley 1280 Comment
  CHSC64863  Erigeron aphanactis var. aphanactis Vernon H. Oswald; Lowell Ahart 1995-6-19 6890 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 3.6 mi e of Hwy. 395. On the s side of the road. 1353 Comment
  SEINET8079426 Image available Erigeron aphanactis var. aphanactis M. J. Williams 1974-7-29 74- 1 -49 Lassen 2 mi. west of Hallelujah Junction, south of Hwy 70 1494 Comment
  CDA4405  Erigeron bloomeri T. C. Fuller 1963-6-1 10632 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 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
  CHSC25088  Erigeron bloomeri var. bloomeri K. R. Stern 1967-6-24 2415 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CHSC48146  Erigeron bloomeri var. bloomeri Vernon Oswald 1986-6-15 2115 Lassen Road between Hwy 139 and Eagle Lake Biological Station, near Black Mtn. 1584 Comment
  CHSC68843  Erigeron bloomeri var. bloomeri Vernon Oswald; Lowell Ahart 1997-6-24 8631 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
  UC1609105  Erigeron bloomeri var. bloomeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  UC1553393  Erigeron chrysopsidis var. austiniae G. Schoolcraft 1988-6-7 1811 Lassen about 14 air mi ne Ravendale 1737 Comment
  CHSC99112  Erigeron divergens Lowell Ahart; John Dittes 2008-6-20 14965 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
  UC1583973  Erigeron divergens G. Schoolcraft 1990-7-11 2107 Lassen on e slopes Tule Mtn. 1767 Comment
  UC1924238  Erigeron divergens Debra Valov 2004-6-8 2004246 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  SEINET8667206 Image available Erigeron divergens M. J. Williams 1984-6-16 84- 31 -1 Lassen Doyle grade, County Hwy 331, 2.6 mi W of Doyle Comment
  SEINET10475564  Erigeron eatonii var. nevadincola Mary Merello 1993-6-28 Merello 753 Lassen Lassen National Forest. Along Forest Service Road 33N02 to Harvey Mountain Lookout and Harvey Valley. Open pine scrub and sagebrush woodland. 1740 Comment
  UC1523767  Erigeron eatonii var. plantagineus Gary Schoolcraft 1981-7-8 499 Lassen about 1 mi se Coulthurst flat (on e side of road) 1920 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  CAS-BOT-BC300426  Erigeron elegantulus Mrs. C. C. Bruce 1898-6-1 2182 Lassen Madeline Plains 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
  JEPS114760  Erigeron elegantulus Lowell Ahart, John Dittes 2008-6-19 14866 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
  RSA0049607  Erigeron elegantulus Dean Wm. Taylor 2012-6-7 21227 Lassen Grasshopper Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139 1635 Comment
  POM36253  Erigeron filifolius Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CHSC65089  Erigeron inornatus var. calidipetris Vernon H. Oswald; Lowell Ahart 1995-7-24 7146 Lassen Cascade Range. Forest Road 31N25 0.5 mi E of Forest Route 10, near the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. Edge of the road. 1905 Comment
  OBI76966  Erigeron inornatus var. calidipetris Anthony Baniaga 2011-8-3 485 Lassen Lassen Natl Forest.N of 30N61, W of A21. Swain Mtn quad. T30N R8E sec 26 NW of SW 1728 Comment
  CAS-BOT-BC295507  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch 2225 Comment
  CHSC117128  Erigeron linearis L. P. Janeway; B. Castro 2015-6-5 11776 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 13.0 road-km south of the junction at the west end of Tuledad Canyon; 6.8 road-km north of Stage Road (which is in the eastern corner of Madeline Plains); west side of a northeastern branch of Red Rock Creek. 1695 Comment
  CHSC72299  Erigeron linearis L. P. Janeway; Glenn Clifton 1998-7-9 5729 Lassen Ridgetop saddle 1.0 mi east of Diamond Mtn. 2215 Comment
  CHSC92678  Erigeron linearis L. P. Janeway; B. Castro 2005-7-10 8485 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  POM39968  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  HSC63770  Erigeron linearis Teresa Prendusi 1980-5-20 Lassen Snowstorm Mtn. along spring area and 4 mi. W of Hwy. 395 1524 Comment
  CAS-BOT-BC295958  Erigeron philadelphicus G. Schoolcraft 1993-6-1 2273 Lassen Secret Creek area s. of Tule Patch Spring 1463 Comment
  RSA700053  Erigeron pumilus subsp. 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 NNW of Harvey Mountain. 1640 Comment
  HSC81807  Erigeron pumilus var. intermedius Thomas W. Nelson, Jane Nelson 1980-7-6 6029 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UC31462  Erigeron pumilus var. intermedius M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  CAS-BOT-BC300310  Erigeron tener G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2285 Lassen Summit Thompson Peak, south of Janesville 2330 Comment
  NY243326  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville. Comment
  SEINET530701  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  UCR92116  Eriogonum baileyi var. baileyi 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
  CHSC25312  Eriogonum caespitosum Pauleen Broyles 1977-6-1 159 Lassen Lava flow ca 1.6 km se of South Fork Reservoir and 1.6 km n of Skedaddle Ranch Road, ca 10 km ne of Herlong. 1660 Comment
  CAS-BOT-BC241833  Eriogonum caespitosum Elmer I. Applegate 1897-6-3 894 Lassen South of Madeline Plains Comment
  RSA176183  Eriogonum collinum Noel Holmgren, James L. Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale Comment
  NY570382  Eriogonum douglasii S. L. Welsh 2001-6-14 28154 Lassen East of Highway 395, road to Rams Horn Spring campground 1539.2 Comment
  CAS-BOT-BC246501  Eriogonum douglasii var. meridionale Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  CHSC68899  Eriogonum douglasii var. meridionale Vernon Oswald; Lowell Ahart 1997-6-24 8639 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  JEPS114757  Eriogonum douglasii var. meridionale Lowell Ahart, John Dittes 2008-6-19 14895 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
  JEPS94457  Eriogonum douglasii var. meridionale Vernon Oswald and Lowell Ahart 1997-6-24 8639 Lassen s of Susanville (near the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  RSA0065383  Eriogonum elatum M. P. Harthill 1972-6-16 s.n. Lassen Doyle. 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
  POM105623  Eriogonum elatum var. elatum Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UCD100069  Eriogonum fasciculatum var. polifolium Collector unknown 1919-5-1 289 Lassen Coyote Hill. Comment
  SEINET210992  Eriogonum gracilipes Noel H. Holmgren, Barton L. Bethe 1970-6-25 4378 Lassen Northe end if Petersen Mountain, near U.S. 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). T 23N, R 18E. Sec 6. Comment
  CAS-BOT-BC259388  Eriogonum luteolum Clare B. Hardham 1961-6-16 7490 Lassen Gold Run Creek. South of Susanville 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
  CAS-BOT-BC263046  Eriogonum maculatum Robert F. Hoover 1940-10-5 4670 Lassen Wendel Comment
  NY430489  Eriogonum marifolium G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mountain 2316.5 Comment
  POM203841  Eriogonum marifolium J. T. Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  CAS-BOT-BC267345  Eriogonum marifolium var. marifolium John Thomas Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  CHSC78482  Eriogonum microthecum var. laxiflorum Vernon H. Oswald 2000-7-31 9947 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  CAS-BOT-BC444002  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mile west of Plinco Mine road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  NY282208  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-9-8 912 Lassen In Robinson Canyon west of Doyle Ca. 1585.0 Comment
  NY803458  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-26 2946 Lassen Slopes west of The Mark Store 6 miles southeast of Milford, CA - nw1/4 1320 Comment
  CAS-BOT-BC266365  Eriogonum nudum var. deductum H. D. Ripley; R. C. Barneby 1943-6-13 5700 Lassen South of Milford 1569 Comment
  SEINET523088  Eriogonum nudum var. nudum Paul Opler 2002-6-22 Lassen Lauffman, W of Milfold. Comment
  CHSC87119  Eriogonum nudum var. pubiflorum L. P. Janeway 2001-6-20 7204 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  OBI76967  Eriogonum nudum var. pubiflorum Anthony Baniaga 2011-8-3 484 Lassen Lassen Natl Forest. Along hwy 44, @ of 31N21. Pine Crk Valley quad T31N R8E sec 10 SE of SE 1800 Comment
  CAS-BOT-BC258739  Eriogonum ovalifolium var. ovalifolium John Thomas Howell 1934-7-7 12469 Lassen Pine Creek Flat Comment
  HSC63562  Eriogonum prociduum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6027 Lassen Ash Valley, along branch road off Adin-Madeline road, 200 yds. from junction 1555 Comment
  UC6570  Eriogonum prociduum Mrs. R. M. Austin June, 1894 Lassen Willow Creek Valley Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  UC1032335  Eriogonum spergulinum var. reddingianum A. Simontacchi 1940-6-5 811 Lassen 3.9 mi nw Cone Mt.; Lassen National Forest, Halls Flat Quadrangle 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
  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
  CAS-BOT-BC262739  Eriogonum sphaerocephalum var. sphaerocephalum H. D. Ripley; R. C. Barneby 1943-6-13 5710 Lassen South of Johnstonville 1325 Comment
  CAS-BOT-BC262742  Eriogonum strictum var. anserinum H. D. Ripley; R. C. Barneby 1944-5-30 5965 Lassen Secret Valley 1554 Comment
  CHSC12967  Eriogonum strictum var. anserinum K. R. Stern 1974-6-26 5865 Lassen E end of Champs flat. Comment
  RSA0037001  Eriogonum strictum var. anserinum Lowell A. Ahart, John Dittes 2008-6-19 14893 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1924215  Eriogonum strictum var. anserinum Debra Valov 2004-6-9 2004268 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1270 Comment
  UC1924216  Eriogonum strictum var. anserinum Debra Valov 2004-6-9 2004268 Lassen Bieber; off County A2 c. 12 km E of Hwy 299 1270 Comment
  HSC63564  Eriogonum strictum var. anserinum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6033 Lassen Ash Valley along rd. branching off Adin-Madeline Rd. 2.5 mi. from jct. 1555 Comment
  CHSC59788  Eriogonum umbellatum var. modocense Mary Meyer 1980-5-7 Lassen Scattered beneath sagebrush on Pete's Mesa. 1447 Comment
  CHSC99123  Eriogonum umbellatum var. modocense Lowell Ahart; John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  RSA700233  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7203 Lassen High Cascade Range, 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  CAS-BOT-BC265097  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-10 3 -83 Lassen About 3 miles east of Susanville, Center Road near Leavitt Lane, Sierra Nevada Comment
  CHSC64887  Eriogonum umbellatum var. nevadense Vernon H. Oswald; Lowell Ahart 1995-6-19 6888 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. On the s side of the road at Mud Flat. 1350 Comment
  CHSC93680  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
  JEPS97420  Eriogonum umbellatum var. nevadense Vernon H. Oswald and L. Ahart 1995-6-19 6888 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. Loosely cespitose perennial 1350 Comment
  NY399401  Eriogonum umbellatum var. nevadense N. H. Holmgren 1970-6-25 4375 Lassen North end of Petersen Mountain, near U.S. 395, 8 miles north of junction with California 70 (Hallelujah Junction) 1524.0 Comment
  UC1032336  Eriogonum umbellatum var. nevadense A. Simontacchi 1940-6-15 877 Lassen 1.6 mi ssw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC265098  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-12 1 -83 Lassen On Sears Road near Janesville, Sierra Nevada Comment
  CHSC12488  Eriogonum vimineum Carol Weld 1969-6-25 29 Lassen Murrer's Meadow. 1524 Comment
  CHSC4943  Eriogonum vimineum W. Lessig 1967-7-11 26 Lassen 3 mi se of Eagle Lake Biology Station on rd to Murrer's Meadow. 1524 Comment
  CHSC84440  Eriogonum vimineum Lowell Ahart 2003-8-17 10516 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. 1433 Comment
  UC1258486  Eriogonum vimineum G. Schoolcraft 1979-6-19 78 B Lassen Painter's Flat 1719 Comment
  CAS-BOT-BC262355  Eriogonum vimineum David D. Keck 1930-7-23 951 Lassen Susanville 1280 Comment
  HSC95194  Eriophorum gracile Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 508 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CDA20364  Eriophyllum lanatum D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  CHSC4262  Eriophyllum lanatum K. R. Stern 1967-6-24 2414 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  CAS-BOT-BC308137  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  CHSC117481  Eriophyllum lanatum var. achilleoides L. P. Janeway; B. Castro 2015-6-5 11764 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 Mt. 1731 Comment
  SBBG61066  Eriophyllum lanatum var. achilleoides S. W. Hutchinson -Jun-1925 270 Lassen Eagle Lake region 1554 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
  CAS-BOT-BC301529  Eriophyllum lanatum var. integrifolium H. D. Ripley; R. C. Barneby 1943-6-13 5717 Lassen South of Johnstonville 1325 Comment
  JEPS29200  Eriophyllum lanatum var. integrifolium Lauramay T. Dempster 1961-6-17 1677 Lassen about 8 mi n of Karlo Road junction with Hwy. 395 1584 Comment
  JEPS34480  Eriophyllum lanatum var. integrifolium C. S. Robinson 1927-7-1 50 Lassen Bogard Ranger Station Lassen National Forest (sw Lassen County) 1712 Comment
  UC1609106  Eriophyllum lanatum var. integrifolium Vernon H. Oswald and Lowell Ahart 1993-6-28 5583 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  SEINET10673285  Eriophyllum lanatum var. integrifolium Paul Gallian, David B. Dunn 1971-6-2 Gallian 472 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC91300  Erodium cicutarium Lowell Ahart; John Dittes 2005-6-2 11923 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC1130323  Erodium cicutarium A. Simontacchi 1940-6-8 832 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1087822  Eryngium alismifolium Ornduff 1958-7-22 5012 Lassen 4.5 mi S of Ravendale (next to Highway 395) Comment
  UC1745690  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
  JEPS66448  Eryngium alismifolium L. R. Heckard and P. Rubtzoff 1971-8-4 2709 Lassen ca. 10 mi. n. Terms (along U.S. Hwy. 395) Comment
  UC809840  Eryngium alismifolium G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 3999 Lassen n.w. Susanville (Hog Flat); Hog Flat 1676 Comment
  CDA38323  Eryngium articulatum M. Pryor, E. E. Fix 1961-8-9 s.n. Lassen 1 mile north of Bieber. 0 Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  CAS-BOT-BC40726  Erysimum capitatum John Thomas Howell 1934-6-14 12154 Lassen Warner Mountains. Near Lost Lake. 2438 Comment
  JEPS53558  Erysimum capitatum var. capitatum Frances D. Payne 1929-7-12 93 Lassen on ridge above Lost Lake; Warner Mts. 2286 Comment
  CAS-BOT-BC55197  Erysimum repandum William Anderson 1963-4-16 s.n. Lassen Honey Lake Valley. Comment
  CHSC91311  Erythranthe arvensis Lowell Ahart; John Dittes 2005-6-1 11900 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  SBBG15427  Erythranthe breweri H. and M. Dearing 1939-7-1 2244 Lassen 17 mi W of Susanville Comment
  CHSC4929  Erythranthe guttata L. G. Bennett 1967-6-28 54 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC14065  Erythranthe primuloides J. Grove 1973-7-25 Lassen Collected at Collemans Lake along fill dam of lake. 1524 Comment
  CHSC20262  Erythranthe primuloides Jeanne Pitts 1972-6-25 274 Lassen 150 yds upstream off road 4.25 mi on Papoose Creek, 10 yds from the creek. Comment
  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
  SEINET3836923 Image available Erythranthe primuloides Marcus E. Jones 1897-1 Lassen Near Pratville, Clear Creek 1524 Comment
  CHSC60778  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1993-6-14 5522 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  PASA565  Erythronium purpurascens Margaret Stason 1932-6-21 440 Lassen Devil's Kitchen, Lassen National Park Comment
  CHSC6197  Eschscholzia californica R. Gein 1946-6-17 Lassen Horse Lake, near Eagle Lake. 1554 Comment
  CHSC7770  Eschscholzia californica Beverley J. Wise 1969-5-17 72 Lassen City limits of Susanville on Hwy 139. 1310 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
  RSA149124  Eschscholzia californica var. crocea I. L. Wiggins, Dorothy B. Wiggins 1961-6-16 16531 Lassen Along Highway 299, overlooking Big Valley 1250 Comment
  UCR55538  Euclidium syriacum June McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road (c. 2 mi south of U.S. Hwy 299 and 4 mi SW of Adin) 1280 Comment
  SEINET11989048  Euclidium syriacum Unknown 1966-1 712 Lassen Frosty Acres ranch, at end of Albaugh Rd, 0.6 mi W of jct with Bassett Rd (ca 2 mi S of US 299 & 4 1280 Comment
  RSA0086578  Euphorbia Bonnie C. Templeton 1938-4-15 s.n. Lassen Near Roscoe. Comment
  CHSC110771  Euphorbia crenulata Dean Wm. Taylor 2012-7-18 21273 Lassen Pumice flat nestled in the cones about 2 miles South of the south end Poison Lake (along Highway 44). 1783 Comment
  SEINET8506929  Euphorbia crenulata D. W. Taylor 2008-5-14 20198 Lassen Unnamed flat about 2 air miles SSE of Poison Butte 1768 Comment
  CAS-BOT-BC312102  Eurybia integrifolia Milo S. Baker 1894-7-30 s.n. Lassen Silver Lake Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 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
  POM203057  Festuca idahoensis J. T. Howell 1934-7-6 12430 Lassen Hall's Flat. Comment
  RSA715621  Festuca idahoensis L. Ahart, John Dittes 2005-6-1 11880 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. 1471 Comment
  UC1024834  Festuca idahoensis Leo Whitney 1935-6-11 3224 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1026711  Festuca idahoensis Leo Whitney 1935-6-23 3295 Lassen Camp 10, Fruit Grower's Supply Company Comment
  UC60788  Festuca idahoensis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  UCD65974  Festuca idahoensis L. Whitney 1935-6-17 3268 Lassen Lassen National Forest, Fruit Grower's Supply Company, Camp 10. Comment
  UCD65975  Festuca idahoensis L. Whitney 1933-8-3 Lassen Halls Flat. Comment
  UCD66089  Festuca idahoensis Al Franklin 1987-7-6 87 -26 Lassen Eagle Lake Field Station, east shore of Eagle Lake, N of Susanville. 1584 Comment
  UCR244064  Festuca microstachys Jim Andre, G. L. Clifton 1993-6-9 19690 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  UC1024808  Festuca rubra Leo Whitney 1935-6-23 3284 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  CHSC68892  Floerkea proserpinacoides Vernon H. Oswald; Lowell Ahart 1997-6-24 8650 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. Meadow. 2249 Comment
  JEPS95090  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1997-6-24 8650 Lassen s of Susanville just s of small ond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout Red Rock Lookout; crest of Diamond Mountain 2249 Comment
  HSC25728  Fragaria vesca D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19249 Lassen 3 mi. N of Westwood Comment
  SEINET10852446  Frangula rubra Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 156 Lassen Lassen National Forest. 5.6 miles SW on 32N10 off Hwy. 44. (Turn at rest area). 1980 Comment
  HSC21366  Fremontodendron californicum J. J. Wagoner 1965-4-30 49 Lassen 16 mi. W of Child's Meadow, along Hwy. 36 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
  UC1134589  Fritillaria atropurpurea K. E. Bradshaw 1939-3-27 232 Lassen s end of Black Mountain Experimental Forest, Lassen National Forest Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1752 Comment
  RSA59815  Fritillaria atropurpurea E. K. Balls 1950-5-19 14769 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  CAS-BOT-BC506181  Fritillaria pudica Louella Bass 1974-3-26 EV 141 Lassen Sierra Nevada, Elysian Valley 1325 Comment
  RSA367755  Fritillaria recurva J. P. Smith, J. O. Sawyer 1972-5-6 5235 -a Lassen Lassen National Forest; Boundary Campground on State Route 89 south of Burney 1067 Comment
  CHSC117191  Galium aparine Lowell Ahart; John Dittes 2016-6-7 21020 Lassen 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC773944  Galium bifolium L. R. Short and W. Gansberg 1926-6-2 S- 368 Lassen Lassen National Forest 1850 Comment
  RSA121073  Galium bifolium L. R. Short, W. Gansberg 1936-6-2 S- 368 Lassen Lassen forest. MDM. 1851 Comment
  RSA517307  Galium multiflorum Barbara Ertter, Gary Schoolcraft 1987-6-16 7175 Lassen Skeeadaddle Mtns on the NE side of Honey Lake. E side of road over saddle on W side of range. 1646 Comment
  SEINET12495958  Galium multiflorum var. multiflorum G. Schoolcraft 1999-7-12 2857 Lassen North slope of Tulehead canyon near NV stateline 1737 Comment
  HSC95186  Galium trifidum Gordon Leppig, Tony LaBanca 1997-6-29 540 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  RSA201314  Galium trifidum var. pusillum J. T. Howell 1959-9-23 34886 Lassen N end of Juniper Lake. 2058 Comment
  RSA0004469  Gayophytum helleri var. erosulatum W. L. Jepson 1918-8-2 7754 Lassen Beckwith Pass 1463 Comment
  CHSC25091  Gayophytum heterozygum K. R. Stern 1967-7-1 2469 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  HSC63969  Gayophytum humile Teresa Prendusi 1980-7-1 1121 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 Comment
  UC1122618  Gayophytum racemosum A. Simontacchi 1940-6-6 821 Lassen 10.1 mi se Nigger Cabin; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA74475  Gayophytum ramosissimum Milo S. Baker 1936-6-16 8364 Lassen About 30 miles north of Susanville Comment
  SEINET8588303  Gentianopsis simplex C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  JEPS44857  Geum aleppicum W. L. Jepson 1918-8-4 7810 Lassen Horse Lake 1554 Comment
  CHSC99305  Geum triflorum Lowell Ahart; John Dittes 2008-6-19 14872 Lassen Along a small wash, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1609243  Geum triflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5603 Lassen ne of Poison Lake (Road 35N04 at Aspen Well, n of Hwy 44 on the nw edge of Harvey Valley); Harvey Valley, Aspen Well 1725 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
  SEINET14625061  Gilia brecciarum subsp. brecciarum M. J. Williams, A. Tiehm 1978-5-14 78- 48 -1 Lassen Hwy 395, 2.8 miles S of Red Rock road turn-off. 1372 Comment
  JEPS94632  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen spur road on n side of Red Rock Rd. 0.6 mi e Hwy. 395 (s of Constantia) 1389 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
  JEPS17737  Gilia leptomeria Rimo Bacigalupi with G. T. Robbins 1955-7-21 5422 Lassen 17.5 mi e U.S. 395 (1.3 mi w of Nevada State line, s of Smoke Creek Ranch Road, Rush Creek); Rush Creek, s of Smoke Creek Ranch Road 1353 Comment
  UC1776720  Gilia leptomeria G. Schoolcraft 1998-6-8 2732 Lassen Lower slopes of amedee in gravel pit 1249 Comment
  RSA516988  Gilia ophthalmoides Barbara Ertter, Gary Schoolcraft 1987-6-16 7189 Lassen Skeedaddle Mtns on NE side of Honey Lake, talus slopes at base of rimrock on S side of Hot Springs VABM 2287 Comment
  RSA370318  Gilia salticola A. Tiehm 1986-5-12 10346 Lassen 14.4 road miles east of highway 395 on the dirt road to Smoke Creek and the Smoke Creek Desert. 1448 Comment
  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
  CHSC99290  Gnaphalium palustre Lowell Ahart; John Dittes 2008-6-22 15032 Lassen About 120 yards west of the road levee, on the banks of a small natural drainage, open meadow area, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber. 1262 Comment
  UC1536868  Gnaphalium palustre G. H. True Jr. 1938-7-14 956 Lassen near Janesville 1280 Comment
  CAS-BOT-BC302588  Gnaphalium palustre Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amadee 1219 Comment
  CAS-BOT-BC302591  Gnaphalium palustre John Thomas Howell 1959-9-23 s.n. Lassen Lassen Volcanic National Park. Beach at se. end of Juniper Lake 2057 Comment
  CAS-BOT-BC302596  Gnaphalium palustre Clare B. Hardham 1971-8-22 18421 Lassen Diamond Mountain, north slope 2225 Comment
  JEPS28800  Gratiola ebracteata George W. Gillett 1957-9-4 1126 Lassen e margin Widow Lake (near inlet, Lassen Volcanic National Park); Lassen Volcanic National Park, e margin Widow Lake 2072 Comment
  CHSC117760  Gratiola heterosepala Virginia Dains; Joanne Crawford 2016-6-9 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km southeast of Horse Lake, 23 km northwest of Shaffer Mtn. 1470 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
  SJSU3576  Grindelia nana C. L. Kline 1965-7-13 195 Lassen State Rte 299, 1 mi NE of Nubieber 1274 Comment
  JEPS87405  Gymnosteris parvula Vernon H. Oswald and Lowell Ahart 1993-6-3 5485 Lassen between Susanville and Poison Lake (Champs Flat Rd. (Lassen 105, Forest 32N28Y), 2.8 mi n of its jct w Lassen 21 (32N02) to Eagle Lake, on w edge of Pine Creek Valley); Pine Creek Valley, Champs Flat Road 1731 Comment
  SEINET12330175  Gymnosteris parvula M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -2 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale, 0.1 mi W Calif-Nev line Comment
  RSA170326  Gypsophila paniculata T. C. Fuller 1963-7-16 10923 Lassen Lassen County: N of Cemetery from which ti escaped, Janesville Comment
  CHSC114922  Gypsophila paniculata D. B. Joley 1976-6-22 1 Lassen Janesville. Comment
  JEPS103223  Hackelia amethystina G. Schoolcraft 1981-6-12 455 Lassen Gold Run Rd. on lower slopes of Diamond Mtn. 1889 Comment
  UC1587098  Hackelia californica G. Schoolcraft 1991-7-30 2197 Lassen e slope of Widow Mountain 1859 Comment
  UC1483791  Hackelia cusickii Teresa Prendusi 1980-7-9 Lassen 36 m n of Susanville (on Hwy 139 and 4 m w); Grasshopper Ridge 1737 Comment
  JEPS67931  Hackelia micrantha Jos. Grinnell 1928-6-29 Lassen Butte Lake 1889 Comment
  POM72793  Hackelia micrantha Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CDA3145  Halogeton glomeratus J. T. Howell, T. H. Kearney 1951-8-2 28229 Lassen Honey Lake Valley near Herlong. 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-BC314767  Helianthella californica var. nevadensis John Thomas Howell 1934-7-11 12561 Lassen Near Black's Lake Comment
  CHSC7647  Helianthus annuus Beverley J. Wise 1948-8-23 21 Lassen 5 mi. N.W. of Susanville of Las. Co. Rd. 201. 1371 Comment
  CAS-BOT-BC305409  Helianthus annuus John Thomas Howell; G. H. True 1973-7-31 50143 Lassen Janesville 1295 Comment
  CAS-BOT-BC305662  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CHSC64756  Helianthus cusickii Vernon H. Oswald 1995-5-31 6798 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  JEPS34877  Helianthus cusickii Joseph Grinnell 1929-6-8 Lassen s side Pete's Valley ((Valley which extends from Horse Lake to plains w of Shaffer Mt.)) Comment
  UC579801  Helianthus cusickii David D. Keck and J. Clausen 1935-6-24 3739 Lassen 2 mi s Ravendale 1465 Comment
  CAS-BOT-BC305785  Helianthus nuttallii Herbert L. Mason 1947-8-11 13492 Lassen Highway 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  UCD73908  Heliotropium curassavicum var. oculatum Rebecca Epanchin-Niell 2001-6-14 44 Lassen Jay Dow, Sr. Wetlands (owned by University of Nevada, Reno) on the south side of Honey Lake. Comment
  HSC65632  Hesperochiron californicus J. P. Smith, J. O. Sawyer 1971-5-23 4661 Lassen Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo Comment
  JEPS94598  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1997-5-27 8525 Lassen on Forest Route 38N04 4.7 mi ne Hwy. 139; Coyote Flat 1798 Comment
  NY1082478  Hesperochiron californicus N. H. Holmgren 1978-6-11 8910 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
  UC124518  Hesperochiron californicus T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  RSA122623  Hesperochiron californicus L. R. Short 1936-4-28 S- 330 Lassen Harvey Valley. Lassen Forest. 1707 Comment
  CHSC7685  Hesperochiron pumilus Beverley J. Wise 1969-5-9 46 Lassen 10.5 mi. west of Susanville on Forest serv. 8246 off Hwy. 36. 1524 Comment
  UC1137714  Hesperochiron pumilus L. R. Short 1936-4-28 S- 329 Lassen Lassen Forest, Harvey Valley 1706 Comment
  RSA59814  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  CHSC106086  Hesperolinon micranthum Lowell Ahart; John Dittes 2010-7-31 16975 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC117516  Hesperolinon micranthum Lowell Ahart; John Dittes 2016-7-13 21123 Lassen 20 yards south of the overflow, about 30 yards north of the dam, 180 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS97309  Hesperolinon micranthum Vernon H. Oswald and L. Ahart 1995-7-5 6957 Lassen T30N R16E NW1/4 NW1/4 Sec. 7, 4540 ft, Modoc Plateau, Sagebrush Scrub. North of Honey Lake on Smoke Creek Ranch Rd., 4.0 mi e of Hwy. 395 1383 Comment
  UC1094379  Hesperolinon micranthum R. C. Bacigalupi with S. Galen Smith 1957-6-28 5995 Lassen 6.0 mi n Madeline (on Highway 395) 1676 Comment
  POM87379  Hesperolinon micranthum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET10936270  Hesperolinon micranthum Mary Susan Taylor 1974-1 Taylor 272 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC17267  Hesperolinon micranthum Mrs. Brandegee Lassen Comment
  CAS-BOT-BC280678  Hesperostipa comata William Rothstrom 1975-6-9 s.n. Lassen Johnstonville. 1/4 mile south of Hwy. 395, west of airport 1264 Comment
  JEPS87469  Hesperostipa comata Vernon H. Oswald and Lowell Ahart 1993-6-14 5542 Lassen n side Eagle Lake Road at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd. 518, 33N89)); Eagle Lake 1566 Comment
  RSA0009648  Heterotheca villosa var. minor Marcus E. Jones 1897-6-18 s.n. Lassen Chat Comment
  UC1949318  Heterotheca villosa var. minor Barbara Ertter 1987-7-24 7302 Lassen ca 3/4 mi ENE of Bechwourth Pass at end of old crumbling paved road Comment
  CAS-BOT-BC425259  Heuchera rubescens P. Monnet 1913-7-4 830 Lassen S.E. de Lassen County Hot Springs Peak 1828 Comment
  RSA0063206  Heuchera rubescens var. alpicola Barbara Ertter, Gary Schoolcraft 1987-6-16 7201 Lassen Skeedaddle Mtns on NE side of Honey Lake. Between Hot Springs Peak and VABM. 2256 Comment
  CHSC5212  Hieracium albiflorum M. West 1946-7-12 Lassen Silver Lake. 1981 Comment
  UC92024  Hieracium albiflorum unknown 1892-7-26 Lassen Milford Comment
  CAS-BOT-BC312416  Hieracium albiflorum George W. Gillett 1957-7-24 895 Lassen Between Cameron Meadow and Snag Lake 1950 Comment
  JEPS88432  Hieracium greenei Vernon H. Oswald and Lowell Ahart 1996-8-1 8129 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi nnw Dyer Mtn. Lookout (ssw of Westwood) 2011 Comment
  RSA32855  Hieracium scouleri A. A. Heller 1938-7-28 15301 Lassen About 2 miles east of Westwood. 1524 Comment
  CHSC65298  Hieracium scouleri var. scouleri Vernon H. Oswald 1995-8-21 7206 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the W side of the lake. 1859 Comment
  UCD84898  Holcus lanatus John Thomas Howell; Gordon H. True, M. Williams 1973-6-28 49501 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  SEINET10685375  Holodiscus microphyllus var. glabrescens Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 150 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
  POM91032  Holodiscus microphyllus var. glabrescens Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  CHSC80544  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald 2001-5-4 9997 Lassen Ash Creek Wildlife Area, Wayman Barn at the west end of Hunt Rd. 1267 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
  UCD85278  Hordeum brachyantherum A. A. Beetle 1941-6-28 2818 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  CAS-BOT-BC284713  Hordeum jubatum John Thomas Howell 1973-7-10 49775 Lassen Fredonyer Pass 1737 Comment
  CHSC25162  Hordeum jubatum L. E. Ray 1967-6-25 54 Lassen Ca. 2 mi. w ELBS Pellican Point. 1524 Comment
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  SEINET10967353  Hordeum jubatum Billy Joe Cox, David B. Dunn Cox 3115 Lassen 6 mi N of Hallelujah Jct. on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  UCD55288  Hordeum murinum subsp. glaucum Ellen Dean; Gary Schoolcraft 2006-5-16 3107 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1244 Comment
  CAS-BOT-BC284897  Hordeum murinum subsp. leporinum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49208 Lassen Elysian Valley northwest of Janesville 1325 Comment
  UC1542925  Horkelia fusca subsp. parviflora G. Schoolcraft 1987-6-23 1753 Lassen Ash Valley RNA 1554 Comment
  CAS-BOT-BC143981  Horkelia fusca var. tenella Lassen 1927 G. S. Crew 1927-6-25 37 Lassen Norval Flat, Lassen National Forest 1747 Comment
  CAS-BOT-BC143984  Horkelia fusca var. tenella George W. Gillett 1957-7-29 942 Lassen Along trail between Butte Lake and Snag Lake, 1/4-mile above Butte Lake 1859 Comment
  CAS-BOT-BC55478  Hornungia procumbens Arnold Tiehm 1980-5-29 5749 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles north northwest of Wendel. 1231 Comment
  NY608898  Hornungia procumbens G. Schoolcraft 1993-6-1 2271 Lassen At Cayote Spring, east of 3 Springs on 5 Springs Mountain 1463.0 Comment
  CHSC21234  Hydrophyllum capitatum var. alpinum F. Tom Griggs; Robert A. Schlising 1974-5-30 3135 Lassen West side of Colman Lake, at margins of meadow. 1950 Comment
  CHSC7684  Hydrophyllum capitatum var. alpinum Beverley J. Wise 1969-5-9 47 Lassen 11.0 mi. west of Susanville on Forest Service road 8246, off Hwy. 36. 1524 Comment
  UC614681  Hydrophyllum capitatum var. alpinum L. Constance 1938-6-10 2325 Lassen 0.5 mi w Fredonyer Pass 1676 Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  CHSC4881  Hypericum formosum var. scouleri Bill Wilson 1967-7-6 47 Lassen Collected at Upper Murrer Meadow, 2.5 mi. E of Eagle Lake Biological Station, 10 mi. N of Susanville. 1524 Comment
  CAS-BOT-BC401309  Hypericum scouleri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49436 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC7707  Idahoa scapigera Beverley J. Wise 1969-4-10 37 Lassen 1.5 mi. north on Hwy 139. 1341 Comment
  SEINET10970448  Idahoa scapigera Jeffrey Huber 1971-6-2 Huber 103 Lassen 4 mi. S. Of adin along calif. Hwy. 139 In basalt-clay; valley floor in artemesia. 1341 Comment
  UCD115194  Idahoa scapigera R. N. Raynor 1940-4-16 s.n. Lassen Big Valley. Comment
  CHSC75515  Ipomopsis congesta subsp. congesta Vernon H. Oswald; Lowell Ahart 1999-6-9 9745 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  CHSC4265  Iris missouriensis K. R. Stern 1967-6-24 2425 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  UC117143  Iris missouriensis Mrs. R. M. Austin 1879-1 302 Lassen Eagle Lake Comment
  RSA181824  Iris missouriensis H. N. Metcalf, Jack C. Wilson 1965-7-1 65 -23 Lassen Southeast of Susanville, on back road to Janesville Comment
  CDA34397  Isatis tinctoria E. Finley 1986-6-18 Lassen Near Nubieber, U.S. 299. 0 Comment
  CAS-BOT-BC69982  Isoetes bolanderi John Thomas Howell 1960-8-23 36431 Lassen Emerald Lake. 2468 Comment
  CHSC59161  Isoetes howellii Vernon H. Oswald; Lowell Ahart 1992-9-15 5215 Lassen Island Lake located N of Bonte Pk. And ca. 1.5 mi W of Juniper Lake campgrounds. 2164 Comment
  CHSC66228  Isoetes nuttallii Vernon H. Oswald; Lowell Ahart 1996-6-24 7848 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagel Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  CAS-BOT-BC324777  Iva axillaris John Thomas Howell 1975-7-23 51394 Lassen Susanville, Sierra Nevada 1295 Comment
  CAS-BOT-BC324778  Iva axillaris P. Monnet 1913-7-4 826 Lassen Honey Lake 1219 Comment
  SD64329  Iva axillaris Darley F. Howe 1966-8-25 Lassen 41 miles south of Alturas on Highway 395. 1675 Comment
  UC73973  Iva axillaris subsp. robustior J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat Song Valley; Honey Lake Valley Comment
  CAS-BOT-BC123376  Ivesia paniculata T. W. Nelson; J. P. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd. 16 miles E of Adin. 1554 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
  CHSC35570  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  RSA59709  Ivesia paniculata E. K. Balls 1950-5-19 14783 Lassen 16.5 miles W of Madeline on road from Adin 1677 Comment
  SEINET4855366  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  CHSC30562  Juncus balticus Sori H. Shad 1970-7-1 5 Lassen Found on the side of spring above Gallaten Beach. 2438 Comment
  UC1100988  Juncus balticus Malcolm A. Nobs and S. Galen Smith 1949-7-21 1062 Lassen 4 mi n Madeline Comment
  UC1133735  Juncus balticus A. Simontacchi 1940-5-17 738 Lassen 5.9 mi s Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1706 Comment
  UC1142944  Juncus balticus subsp. ater A. L. Hormay 1941-6-18 4 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UCD141331  Juncus balticus subsp. ater John Thomas Howell 1959-9-23 34881 A Lassen North end of Juniper Lake. 2057 Comment
  JEPS114384  Juncus bufonius var. congestus Lowell Ahart, John Dittes 2008-6-20 14958 Lassen In meadow, around a new pond, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC91304  Juncus bufonius var. occidentalis Lowell Ahart; John Dittes 2005-6-2 11958 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
  CHSC93707  Juncus capillaris Lowell Ahart; John Dittes 2005-6-2 11959 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  CHSC60787  Juncus hemiendytus var. abjectus Vernon H. Oswald; Lowell Ahart 1993-6-3 5481 Lassen Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake, on the S side of Pine Creek Valley, between Poison Lake and Susanville. Along drainages and on the edge of a meadow. 1725 Comment
  JEPS96073  Juncus hemiendytus var. abjectus Vernon H. Oswald and Lowell Ahart 1996-6-24 7852 Lassen ca 0.5 mi e Eagle Lake Rd. (A1) (and 2.5 mi s of Eagle Lake, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1609524  Juncus hemiendytus var. abjectus Vernon H. Oswald and Lowell Ahart 1993-6-3 5481 Lassen between Poison Lake and Susanville (s. side of Pine Creek Valley, Champs Flat Rd. (Lassen 105, Forest 32N28Y), where it diverges from Lassen 21 (32N02) to Eagle Lake); Pine Creek Valley 1725 Comment
  CHSC114407  Juncus laccatus Don Lepley 2014-6-17 Lassen Lassen National Forest; Eagle Lake Ranger District. Location uncertain; near one of the forks of Baxter Cfreek, probably the northernmost one, along either Road 29N07 or downslope at the A-spur. SE1/4 of NE1/4 of Sec 5 of SW1/4 of NW1/4 of Sec 4. 1767 Comment
  SEINET3507366 Image available Juncus longistylis Marcus E. Jones 1897-6-30 Lassen Susanville, 4 miles below Eagle Lake Comment
  UC1543894  Juncus luciensis John Thomas Howell and Louella Bass 1974-7-10 50538 Lassen Elysian Valley Sierra Nevada 1325 Comment
  CAS-BOT-BC110768  Juncus mertensianus John Thomas Howell; Gordon H. True 1973-8-1 50249 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road south of Susanville. 1950 Comment
  CHSC61072  Juncus nevadensis Vernon H. Oswald; Lowell Ahart 1993-8-3 5745 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. SW edge of the swamp. 1932 Comment
  JEPS28706  Juncus nevadensis George W. Gillett 1957-7-28 934 Lassen Widow Lake Lassen Volcanic National Park 2072 Comment
  CHSC60461  Juncus orthophyllus Mary Ann Showers 1992-6-13 2537 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  HSC103607  Juncus orthophyllus Thomas W. Nelson, Jane Nelson 1985-8-10 8002 Lassen Along north side of Silver Lake 1829 Comment
  SEINET3881686  Juncus sphaerocarpus Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville.; 0 Comment
  UC1133742  Juncus tenuis Robert W. Gardner 1939-6-28 G- 33 Lassen Burgess Spring Experimental Range Halls Flat Quad. 1706 Comment
  UC1601819  Juncus tenuis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixis Mts. Dixie Mts. Comment
  CHSC117212  Juncus tiehmii Lowell Ahart; John Dittes 2016-6-7 20989 Lassen West edge of pond, near spillway 5 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC279914  Juncus trilocularis Barbara L. Wilson; P. Zika 2011-8-7 16807 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harvey Valley 1740 Comment
  HSC1271  Juniperus occidentalis R. H. Berg 1963-4-6 37 Lassen 10 mi. N of Susanville Comment
  RSA78920  Juniperus occidentalis E. K. Balls, P. C. Everett 1952-10-10 18141 Lassen 8 mi SE of ravendale, Hwy 395, between Susanville and Alturas. 1280 Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  UCR148432  Juniperus occidentalis David A. Charlet 1994-7-6 1923 Lassen Great Basin, Susanville, corner of Main and Fair Streets 1271 Comment
  UCR4282  Juniperus occidentalis var. australis Frank C. Vasek 1965-8-31 650831- 06 Lassen 3.8 mi west of the Ranger Station at Susanville Comment
  RSA519137  Juniperus occidentalis var. occidentalis George K. Helmkamp 1990-9-23 D- 6 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  UCR3634  Juniperus osteosperma Frank C. Vasek 1964-8-13 640813- 05 Lassen US Hwy 395, 2.5 mi east of the Sierra Co. line Comment
  CHSC23744  Kelloggia galioides M. S. Taylor 1974-7-10 273 Lassen Scattered on W side of Gallatin Beach Rd, ca. 3 mi S of Gallatin Beach on Eagle Lake, ca 12 mi NW of Susanville. 1524 Comment
  CHSC60409  Kelloggia galioides Mary Ann Showers 1992-6-13 2541 Lassen Lassen Volcanic National Park. Along trail from Snag Lake jct to Widow Lake. 1828 Comment
  JEPS12481  Kelloggia galioides Brown and Wieslander 1922-7-18 53 Lassen near Susanville (Martins Springs); Martins Springs Comment
  JEPS97366  Kelloggia galioides Vernon H. Oswald and L. Ahart 1995-7-24 7133 Lassen T31N R7E ca. center of N side of Sec. 23, 6400 ft, High Cascade Range, Red Fir Forest. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  SEINET12319533  Kelloggia galioides N. E. Heiken 1978-1 78 Lassen E shore of Mahogany L, S of Eagle L 2060 Comment
  UC1483872  Kochia americana G. Schoolcraft 1980-5-8 231 Lassen s. end Cal-Neva Lake 1219 Comment
  CAS-BOT-BC180802  Kochia scoparia Louella Bass 1981-10-14 s.n. Lassen Standish Comment
  UC1609258  Koeleria macrantha Vernon H. Oswald and Lowell Ahart 1993-6-28 5586 Lassen e Poison Lake (Harvey Valley Rd. (33N02) 1.2 mi n of Hwy 44, e side of Grays Valley); Grays Valley, e of Poison Lake 1731 Comment
  UC506998  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-7-12 F 205 Lassen Grass Valley; Lassen Forest, Grass Valley 1699 Comment
  UCD86010  Koeleria macrantha L. Whitney 1935-6-24 3300 Lassen Squaw Valley, CA. 13 miles west of north end of Eagle Lake. Comment
  CHSC66719  Kyhosia bolanderi Vernon H. Oswald; Lowell Ahart 1996-8-1 8116 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  JEPS88425  Kyhosia bolanderi Vernon H. Oswald and Lowell Ahart 1996-8-1 8116 Lassen ca. 0.1 mi downstream Indian Ole Dam on Mountain Meadows Reservoir (sw of Westwood); Hamilton Branch of the North Fork of the Feather River 1524 Comment
  HSC103612  Kyhosia bolanderi Thomas W. Nelson, Jane Nelson 1985-8-10 8004 Lassen Along north side of Silver Lake 1829 Comment
  JEPS88243  Lagophylla ramosissima Vernon H. Oswald and Lowell Ahart 1996-6-17 7782 Lassen ca. 7 mi w Susanville (along Bizz Johnson Trail at 7 mile post on n side of Hwy 36 between trail and highway bridges spanning Susan River); Modoc Plateau 1432 Comment
  CHSC66374  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1996-6-17 7782 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Along the trail at the 7 mile post on the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 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
  JEPS67993  Lappula redowskii W. L. Jepson 1918-8-2 7765 Lassen Beckwith Pass 1463 Comment
  CHSC99279  Lasthenia glaberrima Lowell Ahart; John Dittes 2008-6-20 14901 Lassen Sides of a vernal pool, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET10543694  Lathyrus David B. Dunn 1971-6-2 Dunn 17753 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
  CHSC7669  Lathyrus brownii Beverley J. Wise 1969-5-9 58 Lassen 10.5 mi West of Susanville on Forest service rd. no. 8246 off Hwy 36. 1615 Comment
  UC725975  Lathyrus brownii A. A. Heller 1938-6-4 15148 Lassen 1 mi e Fredonyer Pass 1706 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
  CHSC106572  Layia glandulosa Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  JEPS94833  Layia glandulosa Vernon H. Oswald and Lowell Ahart 1998-5-22 9109 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  SEINET11447828 Image available Layia glandulosa F. B. Headley 1915-5-28 s.n. Lassen Honey lake Comment
  RSA164325  Layia glandulosa subsp. glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, south of Susanville. Plants of the Sierra Nevada Mountains. Comment
  RSA715552  Layia glandulosa subsp. glandulosa L. Ahart, John Dittes 2005-6-1 11889 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  HSC95316  Lemna minuta Gordon Leppig 1998-8-17 1048 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC71871  Lepidium appelianum Vernon H. Oswald; Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Roadside. 1258 Comment
  CHSC112998  Lepidium campestre Lowell Ahart; John Dittes 2013-7-23 18886 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
  CHSC48334  Lepidium campestre Vernon Oswald 1986-5-28 2046 Lassen Hwy 36, 9.8 mi e of the Plumas-Lassen County line, 2.0 mi sw of Fredonyer Pass. Along the road. 1584 Comment
  CHSC99531  Lepidium chalepense Lowell Ahart; John Dittes 2008-6-20 14978 -B Lassen 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
  SEINET5342390  Lepidium dictyotum A. Tiehm 1980-1 5747 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231 Comment
  CAS-BOT-BC12813  Lepidium perfoliatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49209 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  UCD63835  Leptochloa fusca subsp. fascicularis Chandler Jensen 1959-9-8 Lassen Honey Lake Valley near Standish. Comment
  UC106733  Leptodactylon pungens T. S. Brandegee 1892-6-29 Lassen Janesville Comment
  UC1137585  Leptodactylon pungens A. Simontacchi 1940-6-30 911 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quad. Comment
  CHSC92716  Leptosiphon ciliatus L. P. Janeway; B. Castro 2005-7-10 8480 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. Northerly-facing side of the crest. 1859 Comment
  SEINET3364450 Image available Leptosiphon harknessii Marcus E. Jones 1897-7-2 Lassen Susanville Comment
  UC1553404  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  CAS-BOT-BC508365  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen Along Hwy. 139 n. of Said Valley Reservoir 1676 Comment
  SEINET12044970  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek Comment
  POM71468  Leucophysalis nana Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC614395  Lewisia nevadensis L. Constance 1938-6-11 2326 Lassen 5 mi sw Susanville 1371 Comment
  CHSC60763  Lewisia triphylla Vernon H. Oswald; Lowell Ahart 1993-6-3 5473 Lassen Champs Flat Rd. (Lassen 21/105, Forest 32N02), 3.7 mi N of Hwy 44 at spur road 32N02E, on the SE side of Pine Creek Valley, between Poison Lake and Susanville. On the margins of a meadow. 1731 Comment
  JEPS28403  Lewisia triphylla George W. Gillett 1957-7-21 863 Lassen 300 yds n Juniper Lake - Cameron meadow trail summit; Lassen Volcanic National Park 2118 Comment
  JEPS68548  Leymus cinereus W. L. Jepson 1918-8-2 7795 Lassen Constantia Honey Lake Valley 1219 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
  UCD64227  Leymus cinereus Beecher Crampton 1960-6-18 5718 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  UCD64268  Leymus cinereus L. D. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Camp #10. Comment
  UCD64276  Leymus cinereus J. Earl Coke 1931-6-30 Lassen Lassen County. 1524 Comment
  RSA126617  Leymus condensatus H. S. Yates 1936-8-12 6086 Lassen McKenzie Meadows 1524 Comment
  RSA647531  Leymus triticoides Marion P. Harthill 1972-6-16 778 Lassen Doyle 1372 Comment
  UC1037138  Leymus triticoides Leo Whitney 1925-6-28 3364 Lassen Bieber Comment
  UCD87721  Leymus triticoides R. N. Raynor 1939-6-3 s.n. Lassen Susanville. Comment
  CHSC66712  Ligusticum grayi Vernon H. Oswald; Lowell Ahart 1996-8-1 8127 .1 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. On the downhill side of the road. 1737 Comment
  CAS-BOT-BC436030  Ligusticum grayi B. C. Cain 1925-8-24 106 Lassen 1 mi. below Drakesbad, Mt. Lassen Natio,al Park 1645 Comment
  UC1609095  Lilaea scilloides Vernon H. Oswald and Lowell Ahart 1993-7-8 5645 Lassen near se end Poison Lake (Pittville Rd (Lassen 111, 36N01), near its intersection with 33N11, 0.4 mi n of Hwy 44) 1709 Comment
  UCD116467  Limnanthes alba subsp. alba W. W. Robbins 1926-4-17 535 Lassen Grass Valley. 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
  CHSC66264  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1996-6-24 7853 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
  RSA772872  Limosella acaulis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47206 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC60855  Limosella aquatica Vernon H. Oswald; Lowell Ahart 1993-6-28 5602 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC1101429  Limosella aquatica Verne Grant and Irving Schneider 1947-7-31 8203 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1101431  Limosella aquatica Malcolm A. Nobs and S. Galen Smith 1949-7-20 1046 Lassen Bieber Comment
  UC1609319  Linanthus harknessii Vernon H. Oswald and Lowell Ahart 1993-6-14 5516 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd (Lassen A1), 0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  CHSC92715  Linanthus pungens L. P. Janeway; B. Castro 2005-7-10 8479 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of 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
  OBI75885  Linanthus pungens subsp. pulchriflorus Anthony Baniaga 2011-7-1 415 Lassen BLM. Fort Sage MTs OHV trailhead area, E of Doyle. Quad 1442 Comment
  POM74675  Linanthus pungens subsp. pulchriflorus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC1107337  Linanthus septentrionalis Jean Langenheim 1957-6-22 4367 Lassen Said Valley, ne part of Lassen County Said Valley Comment
  RSA715980  Linum lewisii L. Ahart, John Dittes 2005-6-2 11935 Lassen Along the poor dirt road, 1/4 mile W of the Anderson Ranch home, Long Valley about 4 3/4 miles air N of the intersection of Scott Road and Hwy 70, 6.5 miles air NW of Hallelujah jct. 1499 Comment
  UC1136855  Linum lewisii L. R. Short and D. Gish 1936-6-5 S 385 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1760 Comment
  UCD35730  Linum lewisii var. lewisii Beecher Crampton 1960-6-18 5714 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CHSC13605  Lithophragma Lynn R Thomas 1969-4-17 96 Lassen Ca. 200 yds. up hillside e of Rice Canyon Rd., 5 mi n of junction with 'back road to Litchfield'. Ca 12 mi e of Susanville. 1310 Comment
  CAS-BOT-BC435427  Lithophragma glabrum John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 1524 Comment
  CHSC60688  Lithophragma glabrum Vernon H. Oswald; Anne-Lise Feenstra 1993-4-17 5273 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CHSC61177  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1993-5-12 5385 Lassen Hwy. 44 between Old Station and A21 (to Westwood), at a cattle guard 1.6 mi NW of Rd. 32N08 to Crater Lake. 1751 Comment
  CHSC68765  Lithophragma glabrum Vernon Oswald 1997-5-27 8524 Lassen North of Susanville on Frest Route 38N04 0.4 mi south of Coyote Flat, 4.3 mi northeast of Hwy. 139. 1798 Comment
  CHSC7762  Lithophragma glabrum Beverly J. Wise 1969-3-4 97 Lassen 80 yds west of Hwy 139, 1.4 mi. north of Susanville. 1584 Comment
  JEPS19372  Lithophragma glabrum L. R. Short 1936-4-28 S- 336 Lassen Burgess Spr. Exp. Range; Lassen <National> Forest, Burgess Spr. Exp. Range 1767 Comment
  CAS-BOT-BC435428  Lithophragma glabrum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49166 Lassen Elysian Valley northeast of Janesville; Sierra Nevada 1325 Comment
  SD43499  Lithophragma parviflorum Philip A. Munz 1947-5-18 11862 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville 1509 Comment
  UC496334  Lithophragma tenellum Doris Kildale Gillespie 1930-5-13 9369 Lassen between Susanville and Janesville Comment
  UCD102688  Lithophragma tenellum R. N. Raynor 1940-4-16 s.n. Lassen Big Valley. Comment
  HSC69589  Lithospermum ruderale Gary Schoolcraft 1979-6-19 67 Lassen W of Post Camp on N side of main road 1829 Comment
  SEINET8588539  Lomatium austiniae 2015-5-20 NV 030 -1059 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, go over median, right on Country lane, follow to end of road. 1520 Comment
  CHSC1962  Lomatium bicolor J. Wakeman 1963-5-11 Lassen Bieber. Comment
  JEPS15825  Lomatium bicolor var. leptocarpum M. S. Baker and Franklin P. Nutting 1894-6-20 Lassen near Bieber (Big Valley); Big Valley Comment
  CHSC29900  Lomatium dissectum var. multifidum Robin Ondricek 1978-6-8 44 Lassen Ridge E of Lower Dry Lake in area between basalt and loam. 1767 Comment
  JEPS100465  Lomatium dissectum var. multifidum Dean W. Taylor 2001-6-28 17819 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  POM78249  Lomatium donnellii Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  JEPS125805  Lomatium foeniculaceum subsp. macdougalii William Harnach 2010-6-8 1243 Lassen 2 miles west of the California Nevada state line, north side of Fort Sage Road, northeast of Doyle, CA. Comment
  CHSC106579  Lomatium nevadense C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC99119  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2008-6-19 14899 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
  UC1483796  Lomatium nevadense var. nevadense G. Schoolcraft 1979-4-18 10 Lassen n. Skedaddle Ranch 1554 Comment
  UC1520662  Lomatium nevadense var. nevadense Noel H. Holmgren and Patricia K. Holmgren 1980-7-4 9513 Lassen 18 km. (11 mi.) airline distance e. Ravendale (s. side Observation Peak); Observation Peak Comment
  UC1609374  Lomatium piperi Vernon H. Oswald and Lowell Ahart 1993-6-3 5471 Lassen between Poison Lake and Susanville (Champs Flat Rd. (Lassen 21/105, Forest 32N02), 1.8 mi. n. of Hwy. 44) 1749 Comment
  UC628465 Image available Lomatium ravenii David D. Keck and J. Clausen 1935-6-24 3738 Lassen 2 mi. s. Ravendale 1464 Comment
  UCR183195  Lomatium ravenii Jim Andre, G. L. Clifton 1993-6-2 7716 Lassen Along Hwy 395 c. 25 mi NE of Susanville at Viewland exit, east of Shaffer Mtn 1349 Comment
  JEPS126472  Lomatium triternatum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-6-15 CA 350 -045 Lassen Take Ramhorn Road past campsite for approximately 10-15 miles. Turn left as the fork and continue on for about 3 miles. Comment
  SEINET7883783 Image available Lomatium triternatum Unknown 1986-1 86- 20 -1 Lassen Smoke Creek Rd., E of Hwy 395, T 30 N, R 16 E, Sec. 3 1433 Comment
  CHSC42628  Lomatium triternatum var. macrocarpum Vernon Oswald 1986-5-28 2050 Lassen Hwy 36, 15.0 mi e of Plumas-Lassen Co. line, 3.5 mi ne of Fredonyer Pass. 1508 Comment
  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
  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
  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
  UC726744  Lotus denticulatus A. A. Heller 1941-6-24 16191 Lassen 1 mi e Sieber (along US Hwy 299) 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
  UC1523783  Lotus oblongifolius var. oblongifolius Gary Schoolcraft 1981-7-14 534 Lassen s of Pittville (along Beaver Creek); Beaver Creek 1158 Comment
  CHSC24959  Lotus purshianus K. R. Stern 1974-6-26 5858 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, ca. 1.8 mi nw of intersection with Hwy. 44. Comment
  RSA122901  Lotus unifoliolatus L. R. Short, J. Warren 1936-6-23 S- 447 Lassen Burgess Spring, Exp Range. Comment
  CHSC110911  Ludwigia palustris Lowell Ahart; John Dittes 2012-7-9 18291 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC4820  Lupinus R. Carter 1967-7-16 618 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
  JEPS48705  Lupinus Hilda W. Grinnell 1934-6-2 Lassen two mi e Westwood; e of Westwood Comment
  RSA0027355  Lupinus John F. Emmel 1994-7-17 1330 Lassen Summit area of Observation Peak. 2378 Comment
  CHSC91929  Lupinus andersonii L. P. Janeway; B. Castro 2005-7-10 8482 Lassen Northern High Sierra Nevada. Crest of the Diamond Mountains overlooking Janesville and the north end of Honey Lake; 0.2 km north of Road 28N01 and 0.6 km east of junction of Janesville Grade Road (Road 208 and 28N02) and Road 28N01. 1859 Comment
  UC15769  Lupinus angustiflorus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CHSC23548  Lupinus arbustus Wayne O. Baum 1971-7-6 71 -45 Lassen E. slope of Gallatin Peak. 1950 Comment
  CHSC30579  Lupinus arbustus Sori H. Shad 1970-7-9 45 Lassen Found at edge of Dean's Meadow. 1828 Comment
  CHSC61618  Lupinus arbustus Arthur C. Barrett 1915-6-19 30 Lassen Near Laufman Ranger Station. 1447 Comment
  CHSC67218  Lupinus arbustus James D. Jokerst 1991-5-29 3302 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  SEINET10484649  Lupinus arbustus subsp. calcaratus Mary Susan Taylor 1982-7-27 Taylor 5051 Lassen T24n,r17e,sec.7 sw 1/4 sw 1/4. Constantia quad. Crystal peak area, diamond Mountains, ca 6 air miles sw of doyle. With haplopappus bloomeri, ceanothus Velutinus, wyethia mollis 2377 Comment
  UC1553386  Lupinus argenteus G. Schoolcraft 1988-8-24 1856 Lassen 16 mi e Adin; Ash Valley RNA/ACEC 1554 Comment
  CAS-BOT-BC196340  Lupinus argenteus var. argenteus Alice Eastwood; John Thomas Howell 1940-6-11 8003 Lassen Big Valley Comment
  CAS-BOT-BC208730  Lupinus argenteus var. heteranthus L. S. Smith 1918-8-13 1035 Lassen Silver Cr., Modoc Forest Comment
  CHSC60740  Lupinus argenteus var. heteranthus Vernon H. Oswald; Lowell Ahart 1993-6-14 5514 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  CHSC909  Lupinus argenteus var. heteranthus L. Harman 1946-6-22 Lassen Webb's camp, Eagle Lake. 1554 Comment
  CHSC93684  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2005-6-1 11873 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.8 miles (air) northwest of Hallelujah Junction. 1448 Comment
  NY736929  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6020 Lassen 5 miles west of Doyle Comment
  SBBG3562  Lupinus argenteus var. heteranthus H. and M. Dearing 1938-6-30 2228 Lassen Poison Lake, 40 mi W of Susanville 1219 Comment
  SEINET5327973  Lupinus argenteus var. heteranthus M. J. Williams 1974-7-29 74 -L-58 Lassen 2 mi west of Hallelujah Junction, south of Hwy. 50 1494 Comment
  UCD106820  Lupinus argenteus var. heteranthus Leo Whitney 1934-7-17 s.n. Lassen Lassen N. F. Comment
  SEINET5327987  Lupinus argenteus var. heteranthus J. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, CA 1372 Comment
  SEINET12165582  Lupinus aridus A. Tiehm, Nachlinger, J.; Schoolcraft, G. 1984-1 8823 Lassen Rodeo Flat, 2.7 mi W of State line on Buckhorn Rd from Ravendale to Hwy 81. T35N R17E S22 1829 Comment
  SEINET10484990  Lupinus brevicaulis Gary Schoolcraft 1980-5-30 Schoolcraft 246 Lassen Lassen co. T31n, r15e, se1/4, sec. 11. Elev. 4460'. On s side of rd. Into Diaz ranch at n end of mud flat. Associated with artemisia tridentata, Chrysothamnus spp., Sitanion hystrix. 1359 Comment
  SEINET10452632  Lupinus caudatus Mary Susan Taylor 1982-6-12 Taylor 4653 Lassen T25N R17E se sec 8. Doyle quad. In sandy Sagebrush Scrub, in Doyle, ca. 1/2 mi e of Hwy 395. Comment
  SEINET10490608  Lupinus caudatus subsp. caudatus Jeffrey Huber 1971-6-2 Huber 145 Lassen 6 mi. N of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  POM23529  Lupinus confertus Marcus E. Jones 1897-6-16 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  SEINET10450525  Lupinus confertus Harold W. Rickett 1968-8-22 Rickett s.n. Lassen Collected in a field near Susanville. 1298 Comment
  UC169643  Lupinus lepidus var. confertus T. S. Brandegee 1892-6-27 Lassen Milford Comment
  SEINET8051636  Lupinus lepidus var. confertus G. Schoolcraft 1992-8-11 2246 Lassen Along Highway 395 near inters. of Janesville Road 1280 Comment
  SFV11002  Lupinus lepidus var. confertus J. Turner, F. M. Ball 1962-7-13 1194 Lassen Roadside on Highway 395 near Milford. 1280 Comment
  CHSC5290  Lupinus lepidus var. sellulus 1944-2-7 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  CHSC66243  Lupinus lepidus var. sellulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7867 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. 1633 Comment
  SEINET10904060  Lupinus lepidus var. sellulus Mary Merello 1993-6-27 Merello 741 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  POM312876  Lupinus leucophyllus Verne Grant, Irving Schneider 1947-8-1 8232 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1609421  Lupinus leucophyllus Vernon H. Oswald and Lowell Ahart 1993-6-28 5607 Lassen Rd 35N04 n Hwy 44 (nw edge of valley, ne of Poison Lake); Harvey Valley, Aspen Well 1725 Comment
  UCD107952  Lupinus leucophyllus Verne Grant; Irving Schneider 1947-8-1 8232 Lassen Madeline Plain. Comment
  CHSC112399  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18781 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  JEPS114708  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS103164  Lupinus nevadensis Beth Corbin 2002-4-11 1056 Lassen Skedaddle Ranch Rd, W of Skedaddle Ck, .5 mi NE of Spencer Ck Rd. 1310 Comment
  CHSC5288  Lupinus obtusilobus 1944-7-26 Lassen Juniper Lake. 2055 Comment
  RSA32750  Lupinus onustus A. A. Heller 1940-5-22 15662 Lassen Above the Westwood Cemetery. 1524 Comment
  RSA0005618  Lupinus onustus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  JEPS118457  Lupinus polycarpus Lowell Ahart, John Dittes 2011-6-20 17498 Lassen 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SEINET10871082  Lupinus polycarpus Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2576 Lassen 6 mi. S of Adin; along California Hwy. 139 right-of-way. 1372 Comment
  UC16006  Lupinus polyphyllus var. burkei Milo S. Baker 1893-7-3 Lassen Big Valley 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
  CHSC117512  Lythrum hyssopifolia Lowell Ahart; John Dittes 2016-7-13 21125 Lassen Southwest wedge of the dirt dam, 30 yards east of Stonebreaker Road, 0.6 miles south of County road A-2, 5.3 miles (air) east if Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  HSC93435  Lythrum portula Vernon H. Oswald, L. Ahart 1996-8-1 8104 Lassen Mtn. Meadows Reservoir SW of Westwood, receding shore NE of Indian Ole Dam 1540 Comment
  RSA0105576  Lythrum tribracteatum Lowell Ahart, John Dittes 2013-7-23 18902 Lassen About 150 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SFV7756  Madia citriodora T. Gordon, K. Kimbrough 1975-8-15 1212 Lassen 16 miles south of Adin. 1402 Comment
  SEINET11601338 Image available Madia elegans J. A. Young 1983-8-4 s.n. Lassen Janesville Comment
  UC1136966  Madia elegans L. R. Short 1936-6-26 S- 457 Lassen Burgess Spr. Exp. Range Lassen Forest 1837 Comment
  UCR67469  Madia elegans George K. Helmkamp 1990-10-4 M 11 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  RSA518406  Madia elegans subsp. elegans George K. Helmkamp 1990-9-23 A- 6 Lassen 3 mi E of Susanville, along state road 36. 1345 Comment
  JEPS88219  Madia exigua Vernon H. Oswald and Lowell Ahart 1996-6-17 7806 Lassen n side of Bizz Johnson Trail between Devils Corral Trailhead and 6.0 milepost (trailhead located off Hwy 36 ca 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UC76023  Madia exigua Milo S. Baker Jul 1905 Lassen Dixie Valley Comment
  CHSC29911  Madia glomerata Robin L. Ondricek 1978-8-26 126 Lassen At roadside ca. .5 mi n of turn-off to ELFS on Hwy 139. 1493 Comment
  JEPS94816  Madia glomerata Vernon H. Oswald and Lowell Ahart 1998-9-8 9576 Lassen Highway 299 at the Rail Road overpass on the e side of Nubieber Nubieber 1255 Comment
  CAS-BOT-BC334690  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC343062  Madia gracilis Clare B. Hardham 1969-8-28 17460 Lassen Slope west of Janesville Comment
  POM29869  Madia minima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  RSA715984  Madia minima L. Ahart, John Dittes 2005-6-2 11940 Lassen About 1 1/2 miles northeast of the Anderson Ranch Home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  SJSU10452  Maianthemum stellatum H. L. Buckalew 1961-7-9 Lassen spring near Blue Lake, Warner Mts 1828 Comment
  RSA164326  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Gold Run Creek south of Susanville. Comment
  CAS-BOT-BC347437  Malacothrix floccifera Clare B. Hardham 1961-6-16 7491 Lassen Sierra Nevada Mountains. Gold Run Creek south of Susanville Comment
  SEINET11601669 Image available Malacothrix glabrata F. B. Henning 1915-5-28 s.n. Lassen Honeylake, Calif. Comment
  UCR67380  Malvella leprosa George K. Helmkamp 1990-9-23 A- 8 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  UC62421  Marsilea oligospora Baker and Nutting 1894-7-12 Lassen Pine Creek Comment
  RSA252423  Marsilea vestita R. F. Thorne, C. W. Tilforth 1969-9-5 39139 Lassen Said Valley Reservoir. Comment
  CHSC99294  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  SEINET10474309  Matricaria matricarioides Mary Susan Taylor 1982-8-19 Taylor 5025 A Lassen T23N R17E ne sec 23? Beckwourth Pass quad. E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. Sagebrush Scrub; 4900 ft. 1493 Comment
  CHSC112767  Matricaria occidentalis Lowell Ahart; John Dittes 2013-7-22 18863 Lassen Drainage filled with dirt from construction of a pond, 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS123854  Mentha arvensis Lowell Ahart, John Dittes 2015-7-14 20337 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC105237  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC106683  Mentzelia albicaulis B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC60909  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-7-8 5654 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poisen Lake. 1709 Comment
  JEPS94107  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9137 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  UCD117212  Mentzelia albicaulis Grady L. Webster 1989-5-13 7705 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  UCD117207  Mentzelia albicaulis Jack Major 1966-6-24 s.n. Lassen above Blue Lake, Warner Mountains, Modoc National Forest, northeastern Lassen County (ca. 18 miles airline southeast of Likely.) 1905 Comment
  CHSC29933  Mentzelia dispersa Robin L. Ondricek 1978-6-22 67 Lassen In rocky soil among Jeffrey Pines at the n end of Mahogany Lake. 2057 Comment
  CHSC66392  Mentzelia dispersa Vernon H. Oswald; Lowell Ahart 1996-6-17 7772 Lassen Biz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Scattered plants in dry soil on the edge of the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  JEPS42769  Mentzelia dispersa Milo S. Baker 1890-1 Lassen Milford Comment
  SJSU8590  Mentzelia laevicaulis M. D. Fleschner 1965-7-12 112 Lassen by Hwy 395 near S shore Honey L c. 2 mi SE of Milford Comment
  UCR73830  Mentzelia montana G. L. Webster 1989-5-13 7705 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  RSA202434  Mentzelia montana 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
  CHSC21230  Menyanthes trifoliata Robert A. Schlising 1974-6-20 3146 Lassen Murrers Upper Meadow, about 2.5 miles east of Eagle Lake Field Station, on the east side of Eagle Lake. Comment
  JEPS88323  Menyanthes trifoliata Vernon H. Oswald and Lowell Ahart 1996-6-24 7890 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, Papoose Meadows); Modoc Plateau, Papoose Meadows 1633 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
  SBBG2836  Micranthes integrifolia H. and M. Dearing 1938-6-30 2232 Lassen Box 20 mi N of Susanville [Hwy 44] 1066 Comment
  SD8331  Micranthes odontoloma Mrs. R. M. Austin 1882-8-1 Lassen Lassen Co Comment
  CHSC60821  Microseris laciniata subsp. laciniata Vernon H. Oswald; Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. Meadow. 1719 Comment
  CHSC99301  Microseris laciniata subsp. laciniata Lowell Ahart; John Dittes 2008-6-22 15036 Lassen About 220 yards west of the road levee, open dry 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
  UC1136773  Microseris laciniata subsp. laciniata George A. Fischer and Irwin H. Johnson 1933-7-12 F- 195 Lassen Grass Valley (Dry Lake) Lassen National Forest 1694 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
  CHSC89724  Microseris nutans L. P. Janeway 2004-6-26 8152 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  HSC28899  Microseris nutans D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19168 Lassen 3 mi. N of Westwood Comment
  SEINET10475172  Microseris nutans Mary Merello 1993-6-28 Merello 755 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  CHSC112452  Microsteris gracilis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18741 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
  RSA505418  Mimulus breviflorus R. C. Bacigalupi, S. Galen Smith 1957-6-28 5989 Lassen Along rivulet just east of U.S. Highway 395, 7.0 miles north of Madeline, about one mile north of Sage Hen siding on Southern Pacific Railroad; 1677 Comment
  JEPS4710  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi s Westwood 1524 Comment
  JEPS94552  Mimulus lewisii Vernon Oswald and Lowell Ahart 1997-6-24 8616 Lassen 0.7 mi e of boundary of Lassen National Forest (5.4 mi e of Gold Run Road (29N10), s of Susanville, on n side of Diamond Mountain along Forest Road 29N43); Diamond Mountain along Forest Road 29N43 1889 Comment
  JEPS10491  Mimulus microphyllus Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  HSC22960  Mimulus nanus var. mephiticus John Pratt 1970-7-11 76 Lassen At base of Dyer Mtn lookout tower. Comment
  UCD149990  Mimulus nanus var. mephiticus William Anderson 1963-6-9 s.n. Lassen Honey Lake Valley. Comment
  POM126736A  Mimulus nanus var. nanus Milo S. Baker 1890-1 s.n. Lassen Milford. Honey Lake Valley. Comment
  RSA59745  Mimulus nanus var. nanus N. N. Thompson 1950-5-19 14786 Lassen 16.5 mi. W of Madeline on rd. from Adin. 1677 Comment
  JEPS11060  Mimulus primuloides Brown and Wieslander 1922-7-30 27 Lassen Martin Springs Eagle Lake Comment
  UC1136832  Mimulus primuloides subsp. primuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 243 Lassen Patterson Flat Lassen <National> Forest 1737 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
  RSA536391  Mimulus pygmaeus Beth Corbin 1991-6-10 621 Lassen Pine Creek at Little Harvey Valley 8 miles NE of USFS Bogard Work Center. 1700 Comment
  RSA536395  Mimulus pygmaeus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-20 629 Lassen Gray's Valley, 4.5 miles N of USFS Bogard Work Center. 1715 Comment
  RSA536396  Mimulus pygmaeus Beth Corbin 1991-6-26 633 Lassen Big Merrill Flat. 14 miles NW of Susanville. 1790 Comment
  JEPS94112  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1998-5-22 9123 Lassen ca. 5 mi. n.e. Doyle (rd. to summit of Fort Sage Mts. 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  UC477503  Monardella glauca Geo. A. Fisher 1928-6-12 27 Lassen Lassen Forest 1615 Comment
  UC2035864  Monardella odoratissima subsp. glauca John Thomas Howell 1934-7-8 12487 Lassen Spalding's Eagle Lake Comment
  LA54185  Monardella odoratissima subsp. glauca Carl Epling; William Robison 1935-7-15 sn Lassen Fredonyor Pass Comment
  CAS-BOT-BC222148  Monardella odoratissima subsp. pallida Geo. A. Fisher 1928-6-12 27 Lassen Lassen National Forest 1615 Comment
  JEPS63401  Monardella odoratissima subsp. pallida Jos. Grinnell 1928-6-28 Lassen Near Butte Lake 1889 Comment
  CAS-BOT-BC222147  Monardella odoratissima subsp. pallida W. Lessig 1967-7-20 28 Lassen 2 mi s of Five Corners on w side of rd to Dean's Meadow 1828 Comment
  HSC14280  Monardella villosa D. E. Anderson 1963-8-25 2800 Lassen 3 mi. N of Cromberg along Hwy. Alt 40 1372 Comment
  CHSC75490  Monolepis nuttalliana Vernon H. Oswald; Lowell Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030. 1347 Comment
  CHSC91315  Monolepis nuttalliana Lowell Ahart; John Dittes 2005-6-1 11897 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
  JEPS95874  Monolepis nuttalliana Vernon H. Oswald and L. Ahart 1999-6-9 9754 Lassen Northeast of Susanville and 3.8 mi south of Biscar Wildlife Management Area on BLM 26030: T31N R15E Sect. 31, 4420 ft elevation, sagebrush scrub 1347 Comment
  OBI77205  Monolepis nuttalliana Anthony Baniaga 2011-7-23 462 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 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-BC444626  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UC963894  Montia chamissoi Milo S. Baker 1952-5-23 12421 a Lassen e of Chester (Hwy 36) Comment
  NY497727  Montia chamissoi G. Schoolcraft 1982-6-16 703 Lassen Along Smoke Creek north of Shinn Ranch 1554.5 Comment
  UCD149836  Montia chamissoi William Anderson 1963-6-2 s.n. Lassen Eagle Lake. Comment
  CHSC60845  Montia linearis Vernon H. Oswald; Lowell Ahart 1993-6-28 5611 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. 1798 Comment
  CHSC64850  Montia linearis Vernon H. Oswald 1995-6-26 6941 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. Common in moist, ashy soil of small openings on a flat of sagebrush. 1542 Comment
  JEPS118274  Montia linearis Lowell Ahart, John Dittes 2011-6-20 17476 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  RSA0035909  Montia linearis Lowell A. Ahart, John Dittes 2008-6-20 14938 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1136744  Montia linearis A. Simontacchi 1940-5-14 711 Lassen 10.2 mi e of Coyote Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  UC1951065  Montia linearis Debra Valov 2007-5-22 2007075 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  SEINET5334396  Montia linearis J. Young 1982-6-9 s.n. Lassen M. Meyer's Ranch, Adin, Ca. 1372 Comment
  CHSC44580  Muhlenbergia asperifolia Lowell Ahart; John Thomas Howell 1974-7-9 519 Lassen In a meadow along the south shore of Eagle Lake. 1584 Comment
  JEPS107815  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
  RSA129322  Muhlenbergia asperifolia H. S. Yates 1936-8-11 6072 Lassen Baxter Creek 1280 Comment
  UC1776691  Muhlenbergia asperifolia G. Schoolcraft 1999-7-7 2854 Lassen about 9 miles NE of Ravendale - dune N of Horne Ranch Road 1621 Comment
  UCD86562  Muhlenbergia asperifolia R. Tofsrud 1947-7-1 227 Lassen Between Johnstonville and Standish. Comment
  HSC95294  Muhlenbergia filiformis Gordon Leppig 1998-7-12 958 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC1024665  Muhlenbergia filiformis Leo Whitney 1934-8-15 2184 Lassen near Bridge Creek (ca 7-8 mi sw of Eagle Lake); Lassen National Forest, Bridge Creek Camp 1737 Comment
  UC60836  Muhlenbergia jonesii M. S. Baker and Frank Nutting 1894-7-30 Lassen near Silver Lake Comment
  RSA129676  Muhlenbergia richardsonis G. A. Fischer, Irwin Johnson 1933-7-12 F- 224 Lassen Lassen National Forest; Stringer Meadow. 1723 Comment
  RSA268991  Muhlenbergia richardsonis J. R. Reeder, C. G. Reeder 1972-7-24 5812 Lassen Lassen National Forest; 17 miles NW of Susanville, along Hwy 44 1128 Comment
  RSA268996  Muhlenbergia richardsonis J. R. Reeder 1972-7-24 5806 Lassen Lassen National Park 1921 Comment
  UC506980  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 224 Lassen Stringer Mdw. Lassen National Forest 1722 Comment
  UCD86985  Muhlenbergia richardsonis L. D. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Company, Camp #10. Comment
  CAS-BOT-BC515651  Muilla transmontana G. Schoolcraft 1989-5-3 1863 Lassen NW corner of Secret Valley near Karlo Comment
  CAS-BOT-BC392253  Myosurus apetalus G. Schoolcraft 1993-6-10 2290 Lassen N. of Clark's Valley Rd. e. of Red Rock Lake 1828 Comment
  UC1126101  Myosurus apetalus A. Simontacchi 1940-5-17 739 Lassen 5.9 mi s Patterson Mtn; Lassen National Forest 1706 Comment
  UC1951071  Myosurus apetalus Debra Valov 2009-4-26 2009020 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  OBI76991  Myosurus apetalus var. borealis Anthony Baniaga 2011-6-10 325 Lassen Lassen/Modoc County. On the S side of Hwy 299, ca. 1.2 mi E of Lassen County rd 428. 1295 Comment
  CHSC112462  Myosurus minimus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18726 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
  JEPS118467  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley 1268 Comment
  RSA0062303  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  SEINET2055396  Myriophyllum sibiricum Arnold Tiehm, Gary Schoolcraft 1984-8-14 9243 Lassen Buckhorn Reservoir on the South side of Buckhorn road to Ravendale, about 6 road miles West of state line 1698 Comment
  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
  JEPS28701  Myriophyllum sibiricum George W. Gillett 1957-7-28 920 Lassen E shore Butte Lake, Lassen Volcanic National Park. 1844 Comment
  JEPS94128  Nama aretioides var. californica Vernon H. Oswald and Lowell Ahart 1998-5-22 9105 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  UC585170  Nama aretioides var. multiflora E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1773 Lassen Red Rock 1280 Comment
  UCR183191  Nama aretioides var. multiflora Jim Andre, G. L. Clifton 1993-5-28 7712 Lassen Along Hwy 395 c. 25 mi. NE of Susanville at Viewland exit, NE of Shaffer Mtn 1349 Comment
  CDA40304  Nama aretioides var. multiflora S. E. Piper 1943-7-2 s.n. Lassen 0.5 mile east of Herlong. 0 Comment
  SEINET10969184  Nama densa Mary Susan Taylor 1974-1 Taylor 305 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC91296  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
  SEINET5520826  Nama densa var. densa M. J. Williams 1974-7-26 74 -L-18 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UC735057  Nama densa var. parviflora Lincoln Constance 1946-7-3 3099 Lassen 7 mi n of Spaldings (northern edge of Eagle Lake); northern edge of Eagle Lake 1676 Comment
  RSA508616  Narthecium californicum Mrs. R. M. Austin 1880-8-3 s.n. Lassen Mount Dyer 1829 Comment
  JEPS19815  Navarretia breweri Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 -a Lassen 7 mi n Madeline (about 1 mi n of Sage Hen siding on S.P Railroad, just e of U.S. Highway 395) 1676 Comment
  RSA123149  Navarretia breweri L. R. Short, J. Warren 1936-6-5 S- 374 Lassen Lassen [National] Forest: MDM, Burgess Spr. Exp. Range 1799 Comment
  UC1116681  Navarretia breweri Beecher Crampton 1961-6-20 5737 Lassen 6.5 mi n Bogard Ranger Station; Lassen National Forest, Little Harvey Valley 1676 Comment
  CHSC117216  Navarretia intertexta Lowell Ahart; John Dittes 2016-6-7 21001 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC34347  Navarretia intertexta subsp. propinqua K. R. Stern 1974-6-26 5854 Lassen Ditch bank beside Railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  JEPS19816  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 Lassen 7 mi n Madeline (just e of U.S. Highway 395 (about 1 mi n of Sage Hen siding on S.P. Railroad)) 1676 Comment
  UCD37480  Navarretia intertexta subsp. propinqua Beecher Crampton 1960-6-20 5731 Lassen Lassen County, Lassen National Forest, 0.5 mile south of Black's Mountain USDA and Forest Service Experimental Station, 11 miles northwest of Bogard Ranger Station. 1706 Comment
  UCD32676  Navarretia intertexta subsp. propinqua Beecher Crampton 1954-7-6 2081 Lassen Lassen County, 3 miles north of Madeline, along US highway 395. Comment
  CHSC4760  Navarretia leptalea R. Carter 1967-7-14 615 Lassen Roadside on N side of rd. Ca. 2 mi E of Silver Lake along N side of Rd. (31N07). 1828 Comment
  JEPS121308  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2013-7-22 18851 Lassen 10 yards S of the man-made pond, about 140 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC230387  Navarretia leucocephala subsp. minima James Jokerst 1983-7-24 1882 Lassen Near Madeline Plains 1614 Comment
  CHSC66253  Navarretia leucocephala subsp. minima Vernon H. Oswald; Lowell Ahart 1996-6-24 7847 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
  JEPS114396  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2008-6-20 14952 Lassen about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  UC1058208  Navarretia leucocephala subsp. minima C. McMillan 1949-6-15 1542 Lassen 5 mi w Bieber Comment
  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-BC230388  Navarretia leucocephala subsp. minima Peter H. Raven; Otto T. Solbrig 1958-6-17 13296 Lassen Along US Highway 395, 4.8 miles S of Madeline Comment
  UC1609451  Navarretia linearifolia subsp. linearifolia Vernon H. Oswald and Lowell Ahart 1993-6-28 5616 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 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
  POM73805A  Nemophila parviflora var. austiniae Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkin s Ranch. 1524 Comment
  UC1137710  Nemophila pedunculata L. R. Short and Wm. Gansberg 1936-6-8 S- 393 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1743 Comment
  CHSC116095  Nepeta cataria Lowell Ahart; John Dittes 2015-7-13 20313 Lassen Along levee road, 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
  HSC68171  Nestotus stenophyllus J. P. Smith, J. O. Sawyer 1971-5-23 4659 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  UC1125173  Nicotiana attenuata A. Simontacchi 1940-7-2 934 Lassen Halls Flat Ranger Station; Lassen National Forest, Halls Flat Quad. 1706 Comment
  SEINET10453107  Oenothera deltoides Mary Susan Taylor 1982-6-12 Taylor 4652 Lassen T27N R14E se sec 22. Milford quad. Both sides of Hwy 395, in sandy Sagebrush Scrub, ca. 1 mi n of Milford. 4200 ft. 1280 Comment
  UC107611  Oenothera deltoides subsp. piperi T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  SEINET10491876  Oenothera deltoides subsp. piperi Paul Gallian, David B. Dunn 1971-6-2 Gallian 491 Lassen 5 mi s of milford near honey lake on us hwy 395; along roadside in grass artemesia tridentata assoc; quercus jeffery pine on mtn range to west at approximately the same altitude. 1250 Comment
  SJSU10936  Oenothera deltoides subsp. piperi G. R. Ostrander 1965-7-12 70 Lassen by Hwy 395, 5 mi N of Doyle 1158 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  RSA146045  Oenothera elata subsp. hirsutissima J. W. MacSwain 1959-8-12 59 -147 Lassen 2 miles north of Bridge Camp, Hot Creek. Comment
  RSA8247  Oenothera flava Elmer I. Applegate 1929-6-24 5881 Lassen Big Valley south of Bieber Comment
  RSA27327  Oenothera flava C. L. Hitchcock 1940-5-26 6642 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  UC874023  Oenothera flava subsp. flava C. L. Hitchcock 1940-5-26 6642 Lassen overflow of river 1 mi w Bieber; Pitt River Comment
  CHSC29904  Onobrychis viciifolia Robin L. Ondricek 1978-6-6 33 Lassen 1.2 mi from Hwy 139 on the road to Eagle Lake Field Station. 1499 Comment
  CAS-BOT-BC350039  Oreostemma alpigenum var. andersonii A. A. Heller 1937-9-1 15343 Lassen About a mile east of Westwood 1524 Comment
  CAS-BOT-BC350042  Oreostemma alpigenum var. andersonii Hans Leschke 1958-9-30 1571 Lassen Lassen Volcanic National Park. Grassy Swales 1935 Comment
  JEPS31991  Oreostemma alpigenum var. andersonii Duncan Dunning 1921-8-15 Lassen above Westwood Comment
  OBI75869  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
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Apr 29 2013
  UC773942  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
  JEPS74940  Orthocarpus bracteosus T. I. and F. M. Chuang 1975-7-23 7553 Lassen along road to Mountains Meadow Reservoir about 2 mi <?> Westwood; along road to Mountains Meadow Reservoir Comment
  SEINET3836941 Image available Orthocarpus cuspidatus subsp. copelandii Marcus E. Jones 1897-6-28 Lassen Diamond Mt., Susanville, Perkin's Ranch 2225 Comment
  UC773854  Orthocarpus cuspidatus subsp. cryptanthus L. R. Short and J. Warren 1936-6-23 S- 453 Lassen Burgess Spr. Exp. Range; Lassen Forest, Burgess Spr. Exp. Range 1743 Comment
  POM82978  Osmorhiza berteroi Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  CHSC59070  Oxypolis occidentalis Vernon H. Oswald; Lowell Ahart 1992-8-25 5194 Lassen Lassen Volcanic National Park. Forested slope at the E corner of Snag Lake. 1853 Comment
  CAS-BOT-BC413246  Oxytheca dendroidea subsp. dendroidea Gordon H. True 1973-8-22 7655 Lassen North shore of Honey Lake ca. 5 miles east of Janesville and just west of Hartson Reservoir 1219 Comment
  UC769844  Oxytheca dendroidea subsp. dendroidea R. F. Hoover 1940-10-5 4676 Lassen pass between Shaffer Mt. and Warren Peak Comment
  JEPS84965  Packera cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7194 Lassen Honey Lake Skeedaddle Mountains, Hot Springs Peak (ne side, saddle on e side of peak) 2194 Comment
  CAS-BOT-BC10426  Paeonia brownii 1927-7-1 47 Lassen Bogard R.S. pasture, Lassen Forest 1712 Comment
  UC485769  Paeonia brownii H. E. and S. T. Parks June, 1928 223 Lassen Drakesbad Lassen National Park Comment
  CHSC13509  Panicum J. Pitts 1972-6-23 271 Lassen 50 yds. n of Eagle Lake Biology Station. 1524 Comment
  UC1131606  Panicum capillare H. S. Yates 1936-8-11 6073 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  CDA5491  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  CHSC71077  Pectocarya setosa Vernon H. Oswald; Lowell Ahart 1998-5-22 9098 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
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  JEPS79152  Pedicularis attollens L. R. Heckard with R. Bacigalupi 1980-6-12 5259 Lassen just ne of Westwood (near golf course) 1554 Comment
  NY90883  Pedicularis attollens subsp. protogyna F. W. Pennell 1940-6-10 25771 Lassen Route 36. Road to Coppervale R. S., E of Westwood. Comment
  UC447220  Pedicularis groenlandica Franklin P. Nutting Lassen Pine Creek Comment
  UC773852  Pedicularis semibarbata L. R. Short, J. Warren 1936-6-9 S 410 Lassen Burgess Spring Experiment Range Lassen National Forest 1859 Comment
  UC303057  Pellaea brachyptera Pearl Safford Lassen Susanville [uncertain locality] Comment
  JEPS8094  Penstemon davidsonii var. davidsonii W. L. Jepson 1910-6-11 4117 Lassen Cinder Cone 2133 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
  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
  CHSC4862  Penstemon gracilentus R. Carter 1967-7-7 580 Lassen Collected ca. 20 yds from e shore of small reservoir. Dean's Meadow. Comment
  UC1537436  Penstemon gracilentus Gordon H. True Jr. 1938-7-14 959 Lassen summit on Milford Grade , just on n slope (just on n slope) 1676 Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  UC1537429  Penstemon laetus Gordon H. True Jr. 1936-6-25 530 Lassen e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station 1767 Comment
  NY627264  Penstemon neotericus J. T. Howell 1973-7-10 49758 Lassen Near Westwood, Sierra Nevada 1554.5 Comment
  UC1036203  Penstemon neotericus George W. Gillett 1953-7-13 272 Lassen Westwood Junction Highway 36 , Westwood Junction (Lassen National Forest) 1562 Comment
  UC887183  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mi s Westwood; s of Westwood 1524 Comment
  SBBG28997  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen E of Westwood 1493 Comment
  CHSC7753  Penstemon roezlii Beverly J. Wise 1969-5-15 109 Lassen 24.5 mi. East on Hwy 395 on the West side of Hwy. 1554 Comment
  JEPS94531  Penstemon roezlii Vernon Oswald and Lowell Ahart 1997-6-24 8623 .1 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  NY650100  Penstemon roezlii G. Schoolcraft 1982-6-16 701 Lassen North of Shinn Ranch 1548.4 Comment
  NY650137  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass 1615.4 Comment
  POM252932  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass. 1646 Comment
  UC423646  Penstemon roezlii David D. Keck 1930-7-23 954 Lassen 12 mi w Susanville; Sierra Nevada 1675 Comment
  UC887288  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen e Fredonyer Pass; e of Fredonyer Pass 1645 Comment
  JEPS103216  Penstemon roezlii G. Schoolcraft 1989-7-3 1947 Lassen Diamond Mtns. on Diamond Peak 2346 Comment
  SEINET12320798  Penstemon rydbergii M. S. Taylor 1974-1 287 Lassen ca 2 mi E of Gallatin Beach, ca 1/2 mi S of Eagle Lake, ca 13 mi NW of Susanville 1524 Comment
  CHSC12483  Penstemon rydbergii var. oreocharis Carol Weld 1969-6-20 15 Lassen Dean's Meadow. 1950 Comment
  NY651264  Penstemon rydbergii var. oreocharis F. W. Pennell 1940-6-10 25774 Lassen Route 36, road to Coppervale R.S., east of Westwood 1493.5 Comment
  RSA0115350  Penstemon rydbergii var. oreocharis Lowell A. Ahart, John Dittes 2008-6-20 14919 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1063479  Penstemon rydbergii var. oreocharis Robert W. Gardner 1937-6-20 G- 19 Lassen Burgess Spring Halls Flat Quad., Burgess Spring Comment
  UC70352  Penstemon rydbergii var. oreocharis Milo S. Baker 1890-1 Lassen Milford Comment
  CHSC12411  Penstemon speciosus Lynn R. Thomas 1969-6-20 135 Lassen Just above Deans Meadow, ca. 6 mi. s of E. L. B. S. 2011 Comment
  CHSC4438  Penstemon speciosus K. R. Stern 1967-6-30 2449 Lassen West Central side of Eagle Lake. 1554 Comment
  JEPS15475  Penstemon speciosus Joseph and Hilda W. Grinnell 1938-6-13 1101 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  JEPS29738  Penstemon speciosus Rimo Bacigalupi and L. R. Heckard 1962-5-28 8493 Lassen along U.S. highway 395, 10 mi s Milford; s of Milford 1219 Comment
  UC1036208  Penstemon speciosus George W. Gillett July 1953 273 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass (Highway 36) 1752 Comment
  UC773855  Penstemon speciosus L. R. Short and J. Warren 1936-6-26 S- 357 Lassen Burgess Spr. Exp. Range Lassen Forest 1844 Comment
  CDA33279  Penstemon speciosus T. C. Fuller 1963-6-11 10665 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  NY660820  Penstemon speciosus H. D. D. Ripley 1943-6-13 5672 Lassen South of Constantia 1463.0 Comment
  NY661061  Penstemon speciosus subsp. speciosus D. D. Keck 1930-7-23 950 Lassen Susanville 1280.2 Comment
  CAS-BOT-BC239662  Penstemon sudans John Thomas Howell 1977-6-22 52404 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  CAS-BOT-BC243410  Penstemon sudans David D. Keck 1930-7-23 953 Lassen Four miles west of Susanville, Sierra Nevada 1463 Comment
  NY661799  Penstemon sudans F. W. Pennell 1940-7-23 26253 Lassen Route 36, west of Susanville 1371.6 Comment
  NY661800  Penstemon sudans H. D. D. Ripley 1943-6-13 5739 Lassen West of Susanville 1371.6 Comment
  UC1302299  Penstemon sudans Richard M. Straw 1962-6-29 2198 Lassen on Cal 36, 10 mi w Susanville; w of Susanville 1580 Comment
  UC423647  Penstemon sudans David D. Keck 1930-7-23 953 Lassen 4 mi w Susanville; Sierra Nevada 1463 Comment
  JEPS83459  Penstemon venustus Vernon Oswald 1986-7-22 2219 Lassen 1 mi ne of Fredonyer Pass (Highway 36); Highway 36 1706 Comment
  NY763152  Penstemon venustus K. A. Vincent 1987-6-25 4436 Lassen Sierra Nevada, southeast side of Fredonyer Butte; along north side of CA 36 ca. 11.5 miles WSW of Susanville, east of Fredonyer Pass 1585.0 Comment
  SEINET12335380  Penstemon venustus K. A. Vincent 1987-1 4500 Lassen Sierra Nevada, SE side of Fredonyer Butte, N side of CA 36 ca 11.5 mi WSW of Susanville 1585 Comment
  SEINET258696  Penstemon venustus K. A. Vincent 1987-6-25 4436 Lassen SE side Fredonyer Butte rdbank along N side CA 36 ca 11 mi WSW of Susanville E of Fredonyer Pass 1585 Comment
  RSA594173  Peraphyllum ramosissimum S. O. Mattoon 1974-6-2 42 Lassen Cottonwood Mountains: Vicinity of Dodge Res.; Lassen County Road 502. 1829 Comment
  SEINET12121439  Perideridia gairdneri Unknown 1978-1 62 Lassen Papoose Creek ca 1 km S of Gallatin Beach, S end of Eagle L 1585 Comment
  CHSC42653  Perideridia oregana Vernon Oswald 1986-7-22 2218 Lassen Hwy 36, 15.0 mi e of the Plumas-Lassen County line, 3.5 mi ne of Freydonyer Pass. 1508 Comment
  SEINET3088961 Image available Peritoma platycarpa N. H. Holmgren, Patricia K. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  CAS-BOT-BC423345  Peritoma platycarpa Roxana S. Ferris; Rena Duthie 1919-6-11 13 Lassen Murry on N.C.O. line Comment
  CHSC25307  Phacelia adenophora Pauleen Broyles 1977-6-1 154 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 cm ne of Herlong. 1660 Comment
  CHSC5259  Phacelia adenophora 1944-6-21 Lassen Eagle Lake shore. 1584 Comment
  CHSC64878  Phacelia adenophora Vernon H. Oswald; Lowell Ahart 1995-6-19 6884 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. 1371 Comment
  CHSC7682  Phacelia adenophora Beverley J. Wise 1969-5-3 49 Lassen 6.1 mi. junction with Hwy 395 on Las. Co. Rd. 338. 1615 Comment
  HSC28828  Phacelia adenophora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19305 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS17754  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5429 Lassen along Smoke Creek Ranch rd 8 mi e U.S. Hwy. 395 (se part of valley); Secret Valley 1402 Comment
  RSA17669  Phacelia adenophora Elmer I. Applegate 1934-5-4 8912 Lassen South end of Secret Valley Comment
  RSA38630  Phacelia adenophora P. A. Munz 1947-5-19 11874 Lassen 19 miles south of Ravendale. 1341 Comment
  UC1401312  Phacelia adenophora D. B. Dunn 1956-7-3 11917 Lassen on hwy 395 31 mi ne Johnstonville (n side of flats) Comment
  UC1537547  Phacelia adenophora Gordon H. True Jr. 1938-7-8 905 Lassen near Termo 1371 Comment
  UC1603542  Phacelia adenophora Arnold Tiem, Margaret Williams, and Jan Nachlinger 1988-6-2 11701 Lassen on hwy 395 3.4 road mi n Wendel road (from Susanville to Alturas, s side of mt., w of hwy); Shaffer Mt. 1386 Comment
  UC726890  Phacelia adenophora A. A. Heller 1938-6-23 15210 Lassen along Hwy 395 about midway between Mapes and Secret Valley 1371 Comment
  RSA487940  Phacelia adenophora Arnold Tiehm, Jan Nachlinger, Margaret J. Williams 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 miles north of the Wendel road on Hwy 395 from Susanville to Alturas, west of the highway. 1387 Comment
  RSA83071  Phacelia adenophora Verne Grant, Alva Grant 1947-8-1 8225 Lassen On dike of irrigation ditch southwest of Madeline. Comment
  CHSC91316  Phacelia bicolor var. bicolor Lowell Ahart; John Dittes 2005-6-1 11886 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
  CHSC64789  Phacelia gymnoclada Vernon H. Oswald 1995-5-24 6783 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. 1219 Comment
  CDA40427  Phacelia hastata subsp. compacta L. Ahart, J. Dittes 2005-6-2 11950 Lassen Along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, Long Valley, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction. Comment
  CHSC93554  Phacelia hastata subsp. compacta Lowell Ahart; John Dittes 2005-6-2 11950 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
  CHSC14192  Phacelia hastata subsp. hastata M. S. Taylor 1974-6-28 274 Lassen Scattered on w shore of Pelican Point in Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC26178  Phacelia humilis J. P. Kroessig 1977-5-25 35 Lassen At Eagle Lake Biological Station, ca. 37 km nnw of susanville. 1570 Comment
  CHSC80207  Phacelia humilis Jeanne Boze 1981-6-13 113 Lassen On northeast slope of Gallatin Peak. 2011 Comment
  JEPS118501  Phacelia humilis A. Holmen 2011-8-12 CA 320 -92 Lassen US Hwy 395 South to Termo. Turn East onto Lassen Co. Rd 508 (Juniper Ridge Rd). Continue approximately 11 miles to Cold Springs Rd and head north for 3 miles. Turn and travel about 1 mile. Collection site is along road. Comment
  UC773945  Phacelia humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 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
  UCD120534  Phacelia humilis var. humilis Jack Major 1966-6-24 s.n. Lassen Above Blue Lake, Warner Mountains, Modoc National Forest, northeastern part of county (ca. 18 miles airline southeast of Likely). 1905 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
  RSA303850  Phacelia linearis Jim R. Shevock 1972-5-20 1819 Lassen Highway 395, Honey Lake. 1311 Comment
  SD58172  Phacelia mutabilis Frances Payne 1929-7-12 85 Lassen NE Warner Mts., Ridge above Lost Lake 2438 Comment
  JEPS17909  Phacelia procera Rimo Bacigalupi with G. T. Robbins 1955-7-21 5433 Lassen along upper reaches of creek about 10 mi sw Susanville (along rd. over Diamond Mtn. ridge to Engelmine and Indian Valley); Gold Run Cr. 1767 Comment
  UC107339  Phacelia ramosissima var. eremophila T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  POM73715  Phacelia thermalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC526141  Phacelia thermalis John Thomas Howell 1934-6-16 12222 Lassen Bieber Comment
  RSA74152  Phacelia thermalis J. T. Howell 1934-6-16 12222 Lassen Bieber Comment
  HSC93434  Phalaris arundinacea Vernon H. Oswald, L. Ahart 1996-8-1 8108 Lassen Mtn. Meadows Reservoir SW of Westwood 1540 Comment
  UCD88538  Phalaris arundinacea R. Tofsrud 1951-7-13 s.n. Lassen Near Susanville. Comment
  UC1100411  Phleum pratense Malcolm A. Nobs and S. Galen Smith 1949-7-21 1056 Lassen 4 mi n Madeline Comment
  UC1100415  Phleum pratense Herbert L. Mason and Verne Grant 1947-7-9 13303 Lassen 5 mi e Bieber (irrigation ditch) Comment
  UC1776695  Phleum pratense G. Schoolcraft 1994-8-2 2407 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  UCD89650  Phleum pratense L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  JEPS69974  Phlox diffusa Frances D. Payne 1929-7-12 76 Lassen above Lost Lake (se extremity of Warner Mountains); Warner Mountains 2286 Comment
  POM64961  Phlox diffusa subsp. diffusa Brandegee 1892-7-2 s.n. Lassen Susanville 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
  UC579783  Phlox longifolia subsp. compacta David D. Keck and J. Clausen 1935-6-24 3744 Lassen 2 mi s Ravendale Comment
  CHSC4772  Phlox speciosa R. Carter 1967-6-27 563 Lassen Ca. 5 yds. off N side of Rd. Comment
  CHSC36447  Phlox stansburyi Susan H. Euing 1982-6-4 1 Lassen Ca. .5 mi e of Murrers Upper Meadow, rd along e edge. Comment
  CHSC7764  Phlox stansburyi Beverley J. Wise 1969-4-10 93 Lassen 2.5 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  UC23951  Phlox stansburyi Mrs. C. C. Bruce Jun 1898 2332 Lassen Madeline Plains Comment
  UCD118472  Phlox stansburyi var. brevifolia Grady L. Webster 1989-5-13 7716 Lassen 2.5 mi E of Beckworth Pass. Comment
  UC1126723  Phoenicaulis cheiranthoides A. Simontacchi 1940-5-17 753 Lassen 1.1 mi ssw of Dixie Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  UC465863  Phoradendron densum Milo S. Baker 1900-7-6 Lassen s. side Dixey Mts. Comment
  UCD133167  Pinus contorta subsp. murrayana Beecher Crampton 1960-6-21 5743 Lassen Gurnsey Creek. 3.5 miles E of Child's Meadow, along State Hwy. 36. 1463 Comment
  HSC23512  Pinus contorta var. murrayana L. B. Barlow 1967-7-14 125 Lassen E shore of Silver Lake 1829 Comment
  CHSC6218  Pinus ponderosa P. Balch 1955-6-26 Lassen Stafford's Lodge, Eagle Lake. 1569 Comment
  POM73008  Plagiobothrys Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1228178  Plagiobothrys B. L. Kay 1961-6-28 Lassen 6 mi nw Madeline Comment
  RSA123889  Plagiobothrys bracteatus A. Simontacchi 1940-5-14 715 Lassen 10.2 miles east of Coyote Springs 1700 Comment
  JEPS28710  Plagiobothrys cognatus George W. Gillett 1957-7-28 941 Lassen Widow Lake Lassen Volcanic National Park (marsh area near w end) 2072 Comment
  UC1594603  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1992-7-16 5113 Lassen between Old Station and Susanville (on s side of Hwy 44, Bridge Creek entering McCoy Flat Reservoir); Bridge Cree, McCoy Flat Reservoir 1691 Comment
  UC1609179  Plagiobothrys cognatus Vernon H. Oswald and Lowell Ahart 1993-6-28 5626 Lassen e of Poison Lake (n of Hwy 44 along Rd 33N47 at ne end of Little Harvey Valley, on small branch of Pine Creek, between Champs Flat and Harvey Valley); Little Harvey Valley, Pine Creek 1737 Comment
  RSA0039528  Plagiobothrys cusickii Lowell A. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SBBG125478  Plagiobothrys cusickii L. Ahart 2012-7-9 18284 Lassen ca. 100 yards SE of tall poles, Ash Crk State Wildlife Area, ca. 5.5 mi NE of Bieber, Big Valley 1267 Comment
  CAS-BOT-BC224977  Plagiobothrys hispidulus Peter H. Raven; Otto T. Solbrig 1958-6-17 13286 Lassen Along US Highway 395, 1.8 miles S of Ravendale Comment
  CAS-BOT-BC224978  Plagiobothrys hispidulus Philip A. Munz 1947-5-20 11891 Lassen Milford 1264 Comment
  CHSC112431  Plagiobothrys hispidulus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18776 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
  JEPS120894  Plagiobothrys hispidulus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18776 Lassen About 30 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest Comment
  CAS-BOT-BC224969  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 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
  UC1523814  Plagiobothrys leptocladus Gary Schoolcraft 1983-6-20 1010 Lassen Mud Flat , 31-15-22 (31-15-22) 1341 Comment
  UC614658  Plagiobothrys leptocladus L. Constance 1938-6-11 2330 Lassen slightly alkaline overflow of the Susan River at Litchfield; Susan River, Litchfield 1219 Comment
  CAS-BOT-BC228462  Plagiobothrys mollis G. Schoolcraft 1986-7-28 1665 Lassen Along edge of Moll Res. W of Ash Valley 1606 Comment
  HSC31353  Plagiobothrys mollis D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19273 Lassen Harvey Valley near Cone Springs Comment
  CHSC99536  Plagiobothrys mollis var. mollis Lowell Ahart; John Dittes 2008-6-20 14921 Lassen In vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  POM89198  Plagiobothrys tenellus Milo S. Baker 1890-1 s.n. Lassen Milford. Comment
  UC496322  Plagiobothrys tenellus Doris Keldale Gillespie 1930-5-12 9329 Lassen 2 mi s Susanville (on road to Alturas) Comment
  UCD55159  Plagiobothrys tenellus Ellen Dean 2006-5-15 3047 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  CHSC12416  Platanthera Anne Linda Brisk 1969-6-26 23 Lassen 7.2 mi SW of ELBS. 1584 Comment
  HSC16618  Platanthera dilatata var. leucostachys Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  CHSC64854  Plectritis macrocera Vernon H. Oswald 1995-6-26 6942 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  UC1553411  Plectritis macrocera G. Schoolcraft 1987-5-19 1702 Lassen 16 mi e of Adin (Ash Valley (RNA/ACEC)); Ash Valley 1554 Comment
  RSA788671  Pleiacanthus spinosus J. R. Shevock, Barbara Ertter 1986-7-20 11738 Lassen Along U.S. highway 395 at Red Rock Road. 1500 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
  UCD92172  Poa A. A. Beetle 1941-6-28 2815 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  CAS-BOT-BC254945  Poa bulbosa Barbara Shervanick 1974-5-9 1298 Lassen Highway 89 through Lassen National Forest, about 0.25 mile N of Bridge Campground 1371 Comment
  CHSC108013  Poa bulbosa Lowell Ahart; John Dittes 2011-6-20 17495 Lassen About 40 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  JEPS114748  Poa bulbosa Lowell Ahart, John Dittes 2008-6-22 15035 Lassen About 220 yards west of the road levee, on the banks of a small natural drainage, in Big Valley, about 2.1miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5 miles (air) northeast of Bieber 1262 Comment
  JEPS118450  Poa bulbosa Lowell Ahart, John Dittes 2011-6-20 17495 Lassen About 40 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  RSA450966  Poa bulbosa Barbara Shervanick 1974-5-7 1265 Lassen Highway 396, just south of Milford; Cascade Mountain Range 1372 Comment
  UCD90605  Poa bulbosa Alan A. Beetle; G. L. Stebbins Jr. 1942-5-29 3364 Lassen at Nubieber, near dwellings. Comment
  UCD90699  Poa bulbosa S. Galen Smith; Malcolm A. Nobs, Herbert L. Mason 1949-5-29 758 Lassen on Great Northern Railroad, Highway 299, Nubeiber. Comment
  CHSC91295  Poa cusickii subsp. cusickii Lowell Ahart; John Dittes 2005-6-2 11927 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
  JEPS107983  Poa cusickii subsp. cusickii Lowell Ahart, John Dittes 2005-6-2 11927 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
  CHSC107602  Poa cusickii subsp. epilis Lowell Ahart; John Dittes 2011-6-20 17507 Lassen Meadow about 40 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  HSC95195  Poa leptocoma subsp. leptocoma Gordon Leppig, J. Cromwell 1997-7-27 629 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  RSA129249  Poa palustris H. S. Yates 1936-8-12 6079 Lassen McKenzie Meadows 1524 Comment
  CAS-BOT-BC247320  Poa pratensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 -A Lassen 13.5 mi. E. of Susanville Comment
  UCD91956  Poa pratensis R. Tofsrud 1947-7-24 213 Lassen 13 miles E of Madeline. Comment
  UC1132873  Poa pratensis subsp. pratensis Robert W. Gardner 1937-6-18 G- 8 Lassen Burgess Spring Experimental Range; Halls Flat Quadrangle Comment
  CAS-BOT-BC255021  Poa secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49521 Lassen Elysian Valley, W of Janesville 1325 Comment
  SEINET10966852  Poa secunda Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2602 Lassen Hallelujah Jct. intersection of US Hwy 395 & CA Hwy 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  CAS-BOT-BC236257  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 miles W of Susanville, on rim of plateau overlooking Susan River Canyon 1341 Comment
  CAS-BOT-BC236258  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5456 Lassen 5 miles E of Westwood on road to Fredonyer Pass 1584 Comment
  CAS-BOT-BC247051  Poa secunda subsp. juncifolia John Thomas Howell 1973-7-10 49777 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC247054  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC247073  Poa secunda subsp. juncifolia Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 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
  UC1024938  Poa secunda subsp. juncifolia Leo Whitney 1935-6-26 3336 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC39628  Poa secunda subsp. juncifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3318 Lassen Honey Lake Valley, De Witt's Honey Lake Valley 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
  UCD32654  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2048 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  UCD92157  Poa secunda subsp. juncifolia A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3370 Lassen 5.2 miles E of Bieber, Big Valley. Comment
  UCD92427  Poa secunda subsp. juncifolia L. D. Whitney 1935-6-26 s.n. Lassen Near Fruit Grower's Supply Co., Camp 10. Comment
  JEPS127637  Poa secunda subsp. nevadensis Alejandro Brambila, Michael Dolan 2016-6-27 CA 320 -151 Lassen Northwest of Madeline Plains up Anderson Canyon to Spooner Reservoir. Comment
  HSC10738  Poa secunda subsp. secunda R. S. White 1965-5-15 74 Lassen 10 mi. W of Susanville on Hwy. 36 Comment
  HSC22383  Poa secunda subsp. secunda D. E. Anderson 1969-7-5 4997 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 Comment
  SEINET7294129 Image available Poa secunda subsp. secunda John Thomas Howell, Gordon H. True; Margaret Williams 1973-1 49197 Lassen In open yellow pine forest, Elysian Valley northwest of Janesville. 1326 Comment
  UC1024933  Poa secunda subsp. secunda Leo Whitney 1935-6-28 3344 Lassen Bieber Comment
  CDA40272  Polemonium micranthum Lee Wheeler 1960-4-13 3941 Lassen At the fairgrounds, Susanville. 0 Comment
  CHSC96705  Polemonium occidentale Gordon Leppig 1998-7-12 949 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  SDSU3228  Polemonium occidentale D. F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mtns., Modoc National Forest 2012 Comment
  CAS-BOT-BC74171  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen On s. south of Fillman Road 3.8 miles west of Highway 395. 1609 Comment
  RSA340001  Polyctenium fremontii Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west on Hwy 395 1610 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
  CHSC5240  Polyctenium fremontii var. fremontii W. Vinyard 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  SEINET5326413  Polyctenium williamsiae A. Tiehm, J. Nachlinger, M. J. Williams 1988-1 11703 Lassen On highway 395 from Susanville to Alturas, 6.6 road miles N of the Wendel Road. 1347 Comment
  HSC63730  Polygala subspinosa Teresa Prendusi 1980-5-19 Lassen Slope above Secret Creek Canyon 1433 Comment
  HSC63947  Polygonum argyrocoleon Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  UC726283  Polygonum bistortoides A. A. Heller 1938-6-23 15141 Lassen 2 mi e Westwood 1524 Comment
  UC1567376  Polygonum douglasii subsp. douglasii G. Schoolcraft 1989-6-19 1918 Lassen Ash Valley RNA/ACEC 1554 Comment
  UC570303  Polygonum douglasii subsp. douglasii E. Sawyer 1935-6-27 215 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  HSC31370  Polygonum minimum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19243 Lassen About 3 mi. N of Westwood Comment
  JEPS28705  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen draw 1 mi above Butte Lake (on Widow Lake Trail); Lassen Volcanic National Park 1905 Comment
  CAS-BOT-BC418534  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail 1905 Comment
  UC1101117  Polygonum persicaria Malcolm A. Nobs and S. Galen Smith 1949-8-20 1472 Lassen 1 mi s Milford; Honey Lake Valley Comment
  CAS-BOT-BC419856  Polygonum polygaloides subsp. confertiflorum James Jokerst 1983-7-24 1883 Lassen Near Madeline Plains. 1614 Comment
  CAS-BOT-BC419860  Polygonum polygaloides subsp. confertiflorum Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 757 Lassen On Great Northern Railroad, Highway 299, Nubeiber 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
  UC1258493  Polygonum polygaloides subsp. confertiflorum G. Schoolcraft 1980-7-16 313 B Lassen Nelson Corral Reservoir area; Bureau of Land Management 1804 Comment
  RSA122836  Polygonum sawatchense L. R. Short, J. Warren 1936-06 s 420 Lassen Burgess Spring, Exp Range. 1857 Comment
  CHSC27647  Polygonum sawatchense subsp. sawatchense N. E. Heiken 1978-7-5 72 Lassen S. of Eagle L., E shore of Mahogany L. 2060 Comment
  CAS-BOT-BC420159  Polygonum sawatchense subsp. sawatchense G. Schoolcraft 1988-6-15 1814 Lassen Ash Valley RNA/ACEC 16 miles east of Adin 1584 Comment
  CAS-BOT-BC420976  Polygonum spergulariiforme Clare B. Hardham 1969-8-28 17432 Lassen Slope west of Janesville Comment
  CHSC110900  Polypogon monspeliensis Lowell Ahart; John Dittes 2012-7-9 18300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  JEPS120125  Polypogon monspeliensis Lowell Ahart, John Dittes 2012-7-9 18300 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
  RSA719889  Polypogon monspeliensis Michael A. Vincent, K. Levings 2006-7-29 12915 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. 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
  UC1112248  Porterella carnosula R. C. Bacigalupi with S. Galen Smith 1957-6-28 6023 Lassen Highway 395 in Madeline Plains 3.1 mi s Madeline; Madeline Plains 1615 Comment
  CHSC118487  Porterella carnosula Don Lepley 2015-5-29 Lassen Lassen National Forest. Eagle Lake Ranger District. Southeast corner of Pine Creek Valley, about seven air miles east of Bogard Rest Area. 1716 Comment
  SEINET10460826  Porterella carnosula Gary Schoolcraft 1980-7-16 Schoolcraft 318 Lassen T38N R12ESE 1/4 Sec 23 Comment
  SEINET10460827  Porterella carnosula Hormay 1934-5-14 HORMAY s.n. Lassen T32N R9E 1676 Comment
  SEINET9362199  Potamogeton diversifolius Robert Thorne, DeBuhr, Larry 1975-8-22 47201 Lassen Lassen county Comment
  UC1100045  Potamogeton foliosus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1477 Lassen 1 mi n of Doyle (banks of Long Creek); Honey Lake Valley Comment
  UCD58790  Potamogeton foliosus Daniel B. Marcum 2007-7-25 s.n. Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  OBI77555  Potamogeton natans Anthony Baniaga 2011-7-23 458 Lassen Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4 1700 Comment
  HSC17771  Potamogeton natans Fred J. Kindel 1955-7-14 Lassen Mt. Meadows Reservoir Comment
  UC1099901  Potamogeton pusillus var. pusillus Verne Grant, Irving Schneider 1947-7-31 8202 Lassen Madeline Plain, ne quarter of George Williams section 19 Madeline Plain Comment
  UC60850  Potamogeton zosteriformis J. Burtt Davy Jun 17 1897-Jun 24 1897 3356 Lassen near Amedee; Honey Lake Valley Comment
  OBI77552  Potentilla biennis Anthony Baniaga 2011-7-23 460 Lassen Lassen Natl Forest. Poison Lake. Poison Lake quad. T32N R7E sec 4 1700 Comment
  UCR7838  Potentilla gracilis Marilyn Malin 1968-6-27 253 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 Comment
  POM34036  Potentilla gracilis var. elmeri Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  CHSC99535  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
  UC773876  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spring Experiment Range Lassen National Forest 1767 Comment
  CAS-BOT-BC540363  Potentilla gracilis var. fastigiata John Thomas Howell 1934-7-7 12461 Lassen Bogard Ranger Station Comment
  SBBG3009  Potentilla gracilis var. flabelliformis H. and M. Dearing 1938-7-1 2240 Lassen W of Susanville 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
  JEPS2812 Image available Potentilla millefolia C. S. Robinson 1927-1-1 7 Lassen near Westwood Jct.; Lassen National Forest, Narval Flat; Narval Flat, near Westwood Jct., Lassen Co. 1747 Comment
  CAS-BOT-BC158514  Potentilla millefolia G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  CAS-BOT-BC158516  Potentilla millefolia 1927-6-10 7 Lassen Lassen National Forest, Norval Flat 1747 Comment
  CHSC75533  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1999-6-9 9760 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. Roadside. 1645 Comment
  POM70071  Prunella vulgaris var. lanceolata Marcus E. Jones 1897-7-25 s.n. Lassen Susanville. 1341 Comment
  CDA26124  Prunus andersonii S. E. Piper 1943-7-14 Lassen Southwest, south and east edges of Honey Lake Desert. 1 mile east of Herlong. 0 Comment
  CHSC106677  Prunus andersonii Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  OBI77048  Prunus andersonii Anthony Baniaga 2011-7-1 412 Lassen Ownership unk. E of Doyle, alongrd to Fort Sage Mts. 1288 Comment
  OBI10074  Prunus andersonii H. E. McMinn 1932-8-5 2969 Lassen Susanville to Reno Comment
  CHSC23523  Prunus emarginata Wayne O. Baum 1971-7-7 71 -83 Lassen N. slope of Gallatin Peak. 2011 Comment
  SEINET3850947  Prunus virginiana Dwayne Estes 2004-1 06028 Lassen SE side of Horse Lake along E roadside 1554 Comment
  CAS-BOT-BC154772  Prunus virginiana var. demissa Alice Eastwood; John Thomas Howell 1940-6-11 7994 Lassen Nubieber Comment
  CHSC23560  Prunus virginiana var. demissa W. O. Baum 1971-7-6 34 Lassen At top of s slope on Gallatin Peak. 2103 Comment
  CHSC91204  Prunus virginiana var. demissa Lowell Ahart; John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  RSA123193  Prunus virginiana var. demissa L. R. Short, Wm Gansberg 1936-7-3 S- 466 Lassen MDM. Burgess Spr. Exp. Range. 1848 Comment
  UC1128444  Prunus virginiana var. demissa G. T. Nordstrom 1936-7-8 902 Lassen 2 mi se of Dog Valley (Tahoe National Forest); Tahoe National Forest 1798 Comment
  CHSC61950  Pseudognaphalium thermale Brian Murray 1992-5-31 3 Lassen 1/2 mile East of four corners on Willow Creek Rd. On the side of the road. Comment
  CAS-BOT-BC239801  Pseudoroegneria spicata John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50693 Lassen South and southeast of Diamond Mt. 2286 Comment
  CAS-BOT-BC239804  Pseudoroegneria spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi. W. of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  UCD91517  Pseudoroegneria spicata A. H. Shunk 1923-7-28 s.n. Lassen Madeline. 328 Customs House. Comment
  CHSC66421  Pseudoroegneria spicata subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7791 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At trailside just SE of the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  RSA647559  Pseudoroegneria spicata subsp. spicata Marion P. Harthill 1972-6-17 809 Lassen Ravendale 1768 Comment
  UC1143002  Pseudoroegneria spicata subsp. spicata August L. Hormay 1934-5-15 Lassen 15 mi n of Hall's Flat (Lassen Forest and Range Experiment Station, Lassen National Forest); Lassen Forest and Range Experiment Station, Lassen National 1524 Comment
  CAS-BOT-BC80092  Pseudotsuga menziesii John Thomas Howell 1976-7-19 51965 Lassen on Gold Run Creek southwest of Susanville 1386 Comment
  SEINET10801640  Psilocarphus brevissimus Katherine L. Morris, David B. Dunn; Douglas G. LeDoux 1973-5-25 Morris 249 Lassen 27.7 mi. NW of the junction of Hwy. 36 & 44 on Hwy. 44, at Robber's Spring, in an open meadow on one side of the highway with yellow pine, white fir and open on the other side. Comment
  CHSC110907  Psilocarphus brevissimus var. brevissimus Lowell Ahart; John Dittes 2012-7-9 18290 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  CHSC64868  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6897 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  JEPS120861  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18756 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
  UC1924584  Psilocarphus brevissimus var. brevissimus Debra Valov 2006-5-28 2006014 Lassen Bieber off County Rd A2 c. 8 km east of Hwy 299 1271 Comment
  JEPS124657 Image available Psilocarphus brevissimus var. brevissimus Rechen 1964-7-1 79 Lassen 12 miles north of Susanville Hi 139. Comment
  SJSU10070  Psilocarphus tenellus L. Hooker 1965-7-12 Lassen by Hwy 139 c. 8.3 mi NE of Susanville 1645 Comment
  NY702516  Psoralidium lanceolatum G. Schoolcraft 1991-6-12 2159 Lassen On Sierra Army Depot north of Herlong 1234 Comment
  POM203965  Psoralidium lanceolatum J. T. Howell 1934-6-10 11860 Lassen Doyle 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
  UCD91531  Puccinellia distans Beecher Crampton 1964-6-27 7098 Lassen Lassen County, ca. 8 miles S.E. of Ravendale, BLM Spanish Springs -- Shinn Mtns. Resource Conservation area. 1981 Comment
  CAS-BOT-BC239823  Puccinellia lemmonii G. Schoolcraft 1986-6-2 1601 Lassen About 1 mile west of NV stateline 1341 Comment
  JEPS120925  Puccinellia lemmonii Lowell Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen In a depression on the S side of the road, on the S side of the McArthur Diversion Canal, 0.32 miles E of the Tule River, 2.8 air miles NW of McArthur, Fall River Valley, McArthur Swamp. Comment
  SEINET4890224  Puccinellia lemmonii N. H. Holmgren, P. Holmgren 1978-6-13 8939 Lassen 2.7 km (1.7mi) north-west of Wendel. 1250 Comment
  SEINET4890229  Puccinellia lemmonii J. Davy 1897-1 s.n. Lassen Honey Lake Valley Comment
  CHSC23564  Purshia tridentata W. O. Baum 1971-6-28 42 Lassen Along fire trail on e slope of Gallatin Peak. 1920 Comment
  SEINET10542488  Purshia tridentata Jeffrey Huber 1971-6-11 Huber 338 Lassen 6 miles w of susanville, on calif. Hwy 36, volcanic soil, pinus ponderosa Forest 1615 Comment
  CAS-BOT-BC147816  Purshia tridentata var. tridentata Doris Kildale Gillespie 1930-5-12 9321 Lassen 2 miles north of Susanville on road to Alturas Comment
  CHSC66399  Purshia tridentata var. tridentata Vernon H. Oswald; Lowell Ahart 1996-6-17 7769 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Along the trail on the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  HSC19587  Purshia tridentata var. tridentata J. J. Wagoner 1965-5-1 50 Lassen 22 mi. N of Susanville on Hwy. 395 Comment
  SBBG12225  Purshia tridentata var. tridentata A. I. Richardson 1961-5-30 7 Lassen S of Eagle Lake 1402 Comment
  UC1128551  Purshia tridentata var. tridentata A. Simontacchi 1940-6-4 798 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1836 Comment
  UC1167550  Purshia tridentata var. tridentata E. C. Nord 1958-7-12 108 Lassen near Janesville (near Plumas National Forest) 1371 Comment
  CAS-BOT-BC462754  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CAS-BOT-BC462756  Pyrola dentata Clare B. Hardham 1969-8-28 17446 Lassen Sierra Nevada: west of Janesville. Comment
  CHSC66723  Pyrola picta Vernon H. Oswald; Lowell Ahart 1996-8-1 8130 Lassen Forest Rd. 28N56 (D-Line) ca. 0.6 mi NNW of Dyer Mtn. Lookout, SSW of Westwood. 2011 Comment
  SEINET178134  Pyrola picta Marcus E. Jones 1897-6-28 Lassen Diamond Mt. Susancille, Perkins R. 1829 Comment
  UCD135326  Pyrrocoma hirta Ratliff 1966-7-5 4 Lassen Harvey Valley Allot. - Plot 71. Comment
  CAS-BOT-BC362273  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains 1614 Comment
  UCD135332  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Hwy 395. Comment
  JEPS41362  Quercus garryana James Griffin 1964-8-4 1272 Lassen along county road from Little Valley to Dixie Valley 1341 Comment
  CAS-BOT-BC105245  Quercus kelloggii John Thomas Howell 1973-7-10 49788 Lassen 3 miles W of Susanville 1371 Comment
  LA205323  Quercus kelloggii Carl Epling; William Robison 1935-7-15 sn Lassen near Honey Lake Comment
  UCD46640  Quercus kelloggii Annie M. Alexander; Louise Kellogg 1946-8-14 5158 Lassen On hill back of town. Susanville. Comment
  CAS-BOT-BC104478  Quercus vacciniifolia Brighton C. Cain 1925-8-24 95 Lassen Mt Lassen Volcanic National Park 1 mi below Drakesbad 1645 Comment
  CAS-BOT-BC104477  Quercus vacciniifolia C. Hart Merriam 1925-8-22 s.n. Lassen Summit, between Butte Creek Meadows and Lake Almanor Comment
  RSA399361  Ranunculus alismifolius var. hartwegii Christopher Davidson 1975-6-6 2720 Lassen 2.8 miles W of Bogard Work Center and roadside rest on Hwy 44. 1684 Comment
  SEINET516314  Ranunculus alismifolius var. lemmonii Vernon H. Oswald 1998-6-22 9230 Lassen Champs Flat Rd. (A-21) 1.8 mi N of Hwy 44, ca. 18 air mi N of Westwood. 1750 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
  CHSC4806  Ranunculus aquatilis var. subrigidus R. Carter 1967-7-13 589 Lassen In Willow Creek, ca. 5 mi E of Eagle Lake Biology Station at point where Rd. comes nearest to Willow Creek. 1560 Comment
  CHSC5020  Ranunculus californicus L. G. Bennett 1967-6-24 44 Lassen North end of Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC6246  Ranunculus canus W. Vinyard 1946-6-13 Lassen Pine Creek, Eagle Lake. 60 Comment
  SEINET10536136  Ranunculus cymbalaria Mary Susan Taylor 1974-1 Taylor 268 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC1101377  Ranunculus cymbalaria var. saximontanus Malcolm A. Nobs and S. Galen Smith 1949-8-20 1484 Lassen creek banks 1 mi n Doyle; Honey Lake Valley, Long Creek Comment
  CHSC84874  Ranunculus flammula var. ovalis Samantha Mackey Hillaire; Linnea Hanson, Catie Bishop 2003-9-21 352 Lassen Lassen Volcanic National Park. Snag Lake; mudflat just N of an open stand of willows on the south shore of the lake; just east of where Grassy Creek flows into the lake. [Label says 'area near' latitude and longitude]. 1900 Comment
  UC72019  Ranunculus glaberrimus Milo S. Baker 1890-1 Lassen Milford 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
  NY494767  Ranunculus occidentalis var. dissectus H. D. D. Ripley 1943-6-13 5682 Lassen Near Milford 1264.9 Comment
  CHSC108026  Ranunculus occidentalis var. occidentalis Lowell Ahart; John Dittes 2011-6-20 17479 Lassen Meadow, about 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1191443  Ranunculus sceleratus Malcolm A. Nobs and S. Galen Smith 1949-7-21 1050 Lassen marshy creek ca 1 mi e Madeline Comment
  CDA3488  Ranunculus testiculatus T. C. Fuller 1963-6-12 10666 Lassen County fairgrounds, Susanville. 0 Comment
  CDA3492  Ranunculus testiculatus T. C. Fuller 1969-5-22 18480 Lassen County fairgrounds, Susanville. 0 Comment
  CHSC115029  Rhamnus alnifolia Stephanie Puentes 2011-8-16 Lassen E of Lake Almanor and NE of Dyer Mtn. Dense thicket on both sides of stream. 1824 Comment
  CAS-BOT-BC93391  Ribes cereum Keith Wagnon; James Vale; Walter Knight; Irja Knight 1981-5-24 4122 Lassen Near summit of grade at southeast end of Eagle Lake. Comment
  JEPS49429 Image available Ribes cereum W. L. Jepson 1910-6-11 4118 Lassen base Cinder Cone 1889 Comment
  UCR17281  Ribes cereum Frank C. Vasek 1975-7-11 750711- 30 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  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
  CAS-BOT-BC212579  Ribes montigenum Alice Eastwood 1912-8-22 1863 Lassen Trail from Morgan Springs to Lassen Butte Comment
  CAS-BOT-BC212580  Ribes montigenum Blanche Clear 1938-7-13 s.n. Lassen Loop highway on road to Summit Lake Comment
  OBI75884  Ribes velutinum Anthony Baniaga 2011-7-1 414 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  UCR17289  Ribes velutinum Frank C. Vasek 1975-7-11 750711- 19 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC363011  Rigiopappus leptocladus Arnold Tiehm; Jan Nachlinger; Margaret Williams 1988-6-2 11700 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway 1386 Comment
  JEPS30485  Rigiopappus leptocladus Peter H. Raven and Otto T. Solbrig 1958-6-17 13302 Lassen along United States Highway 395 8.0 mi n Madeline Comment
  CAS-BOT-BC363008  Rigiopappus leptocladus unspecified 1940-5-31 s.n. Lassen E. of McArthur Comment
  CDA8540  Rigiopappus leptocladus T. C. Fuller 1963-6-1 10624 Lassen Road to Susanville, 2.2 miles south of Pittville. 0 Comment
  CHSC72219  Rorippa columbiae Vernon H. Oswald 1998-9-14 9626 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  JEPS119648  Rorippa curvisiliqua Lowell Ahart, John Dittes 2012-7-9 18292 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC75479  Rorippa curvisiliqua var. curvisiliqua Vernon H. Oswald; Lowell Ahart 1999-6-9 9758 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. On a meadow adjacent to the highway. 1645 Comment
  CHSC112392  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18725 Lassen Drainage filled with dirt form construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  NY181932  Rorippa curvisiliqua var. orientalis V. E. Grant 1947-8-1 8237 Lassen East end of Tule Lake. Comment
  NY182160  Rorippa sinuata G. Schoolcraft 1989-6-6 1901 Lassen North end of Secret Valley west of Hwy. 395. 1350.3 Comment
  CHSC33101  Rorippa sphaerocarpa M. S. Taylor 1974-7-10 278 Lassen In meadow, ca. 3 mi s of Gallatin Beach on s end of Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  SEINET11908427  Rosa californica M. Sacks, Detzer 1977-1 7 Lassen 1mi SE of Milford, 1mi NW of Laufman Ranger Station, T26N, R14E, Sec 1 1341 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
  HSC93474  Rosa woodsii subsp. ultramontana Gordon Leppig, Tony LaBanca 1998-7-13 874 Lassen Modoc National Forest, Blue Lake Ranch. 1799 Comment
  CAS-BOT-BC148257  Rosa woodsii var. ultramontana George W. Gillett 1957-7-26 915 Lassen Butte Lake - Lassen Volcanic National Park 1844 Comment
  CAS-BOT-BC148258  Rosa woodsii var. ultramontana Louella Bass 1973-5-29 EV- 68 Lassen Elysian Valley - Sierra Nevada 1325 Comment
  RSA647522  Rosa woodsii var. ultramontana Marion P. Harthill 1972-6-16 803 Lassen Litchfield 1311 Comment
  CHSC66728  Rotala ramosior Vernon H. Oswald; Lowell Ahart 1996-8-1 8105 Lassen Mountain Meadows Reservoir SW of Westwood. Growing on the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  CAS-BOT-BC148390  Rubus leucodermis John Thomas Howell 1974-7-9 50482 Lassen Coniferous forest between Susanville and SW end of Eagle Lake 1828 Comment
  CHSC6261  Rubus leucodermis P. Balch 1955-7-20 Lassen Eagle Lake. Paul Bunyan road, 3 1/2 mi. from Susanville. 1615 Comment
  CHSC68870  Rubus parviflorus Vernon Oswald; Lowell Ahart 1997-6-24 8614 Lassen South of Susanville on the north side of Diamond Mtn. along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  JEPS121297  Rumex crispus Lowell Ahart 2013-7-22 18865 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1191289  Rumex crispus Malcolm A. Nobs and S. Galen Smith 1949-8-20 1481 Lassen 1 mi n Doyle; Long Creek Comment
  CHSC66865  Rumex fueginus Vernon H. Oswald; Lowell Ahart 1996-9-10 8283 Lassen Mountain Meadows Reservoir SW of Westwood. Uncommon on the embankment of the railroad along the northwest edge of the reservoir. 1539 Comment
  CAS-BOT-BC433632  Rumex lacustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13266 Lassen Along United States Highway 395, 11.8 miles north-east of Litchfield Comment
  UC6963  Rumex maritimus M. S. Baker and Frank Nutting 1894-7-25 Lassen Willow Creek Comment
  UC1101216  Rumex salicifolius var. lacustris Verne Grant and Irving Schneider 1947-7-30 8188 Lassen s point of w embayment Tule Lake Comment
  UC6952 Image available Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake; ; Silver Lake, Lassen Co. Comment
  CHSC65318  Rumex salicifolius var. salicifolius Vernon H. Oswald; Lowell Ahart 1995-8-14 7188 Lassen Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy.395, N of Susanville. 1645 Comment
  JEPS114648  Rumex salicifolius var. triangulivalvis Lowell Ahart, John Dittes 2008-6-20 14930 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC434261  Rumex triangulivalvis John Thomas Howell 1975-7-23 51404 Lassen Along Hwy. 395 between Johnstonville and Janesville 1280 Comment
  CHSC71095  Rumex venosus Vernon Oswald; G. Schoolcraft, B. Corbin, M. Mini 1998-5-16 9086 Lassen About 1.5 mi southeast of Herlong along a dirt road on the north side of Long Valley Creek between Garnier Rd. and the RR. 1249 Comment
  SEINET4176394  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia Comment
  JEPS51078  Sagina saginoides Brown and Wieslander 1922-7-30 45 Lassen Eagle Lake, Martin Springs Comment
  CHSC4993  Sagittaria cuneata R. Clicquennoi 1967-7-1 21 Lassen At edge of small roadside pool 16 mi n of Susanville on highway 139. 1524 Comment
  CHSC5006  Sagittaria cuneata L. G. Bennett 1968-7-8 124 Lassen Murrers Meadow, north end, near Eagle Lake. 1493 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
  UC1609489  Sagittaria cuneata Vernon H. Oswald and Lowell Ahart 1993-8-3 5753 Lassen n edge Cooper Swamp Cooper Swamp (e of Silver Lake just e of the Caribou Wilderness, ca 13 mi (air) n of Lake Almanor); e of Caribou Wilderness, , e of Silver La 1932 Comment
  UCD138009  Sagittaria cuneata Calvin McMillan; Malcom A. Nobs 1949-6-17 799 Lassen Grass Lake, Highway 97. Comment
  CAS-BOT-BC103456  Salix eastwoodiae G. Schoolcraft 1997-8-6 2666 Lassen Diamond Mtn. 2316 Comment
  CHSC65120  Salix eastwoodiae Vernon H. Oswald; Lowell Ahart 1995-7-24 7140 Lassen Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. 1905 Comment
  CHSC96714  Salix eastwoodiae Gordon Leppig; J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  CAS-BOT-BC108056  Salix exigua P. Monnet 1919-7-1 823 Lassen Hot Springs Peak 91 Comment
  RSA716142  Salix jepsonii L. Ahart, John Dittes 2005-6-2 11947 Lassen About 1.5 miles NE of the Anderson Ranch home. Long Valley. About 6 (air) miles N of the intersection of Scott Road and Hwy 70. 7.5 (air) miles NW of Hallelujah Jct. 1602 Comment
  CAS-BOT-BC128171  Salix lasiandra var. lasiandra John Thomas Howell; Gordon H. True 1973-7-31 50042 Lassen On road from Janesville to Thompson Peak, Diamond Range - Sierra Nevada 1783 Comment
  CAS-BOT-BC128174  Salix lasiandra var. lasiandra Mrs. E. C. Sutliffe 1927-6-1 s.n. Lassen Drakesbad - Lassen Volcanic park Comment
  JEPS88212  Salix lasiandra var. lasiandra Vernon H. Oswald and Lowell Ahart 1996-6-17 7790 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau 1402 Comment
  CAS-BOT-BC106964  Salix lasiolepis G. Schoolcraft 1999-5-7 2820 Lassen Along B.J. Trail near 4 mi. marker w. of Susanville 1371 Comment
  UC1776696  Salix lemmonii G. Schoolcraft 1994-8-3 2425 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  CDA37714  Salsola paulsenii Breckenridge/Filippini 2007-6-14 s.n. Lassen Wendell Plains. 0 Comment
  SEINET201595  Salvia dorrii var. dorrii Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8462 Lassen 50 miles southeast of Susanville. Comment
  UC585164  Salvia dorrii var. dorrii E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1739 Lassen mountain above Red Rock 1432 Comment
  CAS-BOT-BC214311  Salvia dorrii var. pilosa Elmer I. Applegate 1897-6-3 860 Lassen Madeline Plains Comment
  CAS-BOT-BC238592  Sambucus nigra subsp. caerulea John Thomas Howell 1974-7-10 50548 Lassen Elysian Valley 1325 Comment
  JEPS85836  Sambucus racemosa var. microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 air mi s of Susanville); Diamond Mts. 2255 Comment
  JEPS94542  Sambucus racemosa var. microbotrys Vernon Oswald and Lowell Ahart 1997-6-24 8609 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 (29N10)); Diamond Mountain, Forest Road 29N43 1889 Comment
  UCD127944  Sanicula bipinnatifida W. W. Robbins 1926-4-17 534 Lassen Grass Valley. Comment
  CAS-BOT-BC110337  Sarcobatus vermiculatus John Thomas Howell 1934-6-10 11897 Lassen Horse Lake. 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
  RSA252443  Schoenoplectus pungens Robert F. Thorne, C. W. Tilforth 1969-9-6 39257 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  UC1100752  Scirpus acutus var. occidentalis Malcolm A. Nobs, S. Galen Smith 1949-8-20 1487 Lassen 1 mi s Doyle; Long Creek, s of Doyle Comment
  UC2156  Scirpus maritimus J. Burtt Davy Jun 17 1897-Jun 24 1897 3294 Lassen Byers' meadows , Byers' meadows (Honey Lake Valley) Comment
  UC2198  Scirpus pungens J. Burtt Davy Jun 17 1897-Jun 24 1897 3286 Lassen sloughs Susan River (Honey Lake Valley); , Honey Lake Valley Comment
  JEPS11413  Scrophularia desertorum R. F. Hoover 1940-9-28 4632 Lassen Susanville Comment
  SD61030  Scrophularia lanceolata Darley F. Howe 1962-8-2 3923 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc Natl. Forest 1829 Comment
  CAS-BOT-BC214188  Scutellaria John Thomas Howell 1976-7-19 51978 Lassen Gold Run Creek southwest of Susanville, Sierra Nevada 1386 Comment
  CAS-BOT-BC5845  Scutellaria holmgreniorum Noel Herman Holmgren; Patricia K. Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U.S. Hwy 395 via Rye Patch Canyon 1580 Comment
  RSA0003996  Scutellaria holmgreniorum Noel Holmgren, Pat Holmgren 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km. from U.S. Hwy. 395 via Rye Patch Can. Comment
  CAS-BOT-BC214267  Scutellaria nana Peter H. Raven; Otto T. Solbrig 1958-6-17 13270 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  CAS-BOT-BC214268  Scutellaria nana Richard Olmstead 1984-6-27 584 Lassen Rye Patch Canyon Rd., 13.2 mi E of US 395, turnoff ca 14 mi. S of Ravendale 1548 Comment
  CHSC91527  Scutellaria nana L. P. Janeway 2005-7-4 8461 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC100824  Scutellaria nana Milo S. Baker 1894-7-13 Lassen Pine Creek Comment
  UC1037195  Scutellaria nana Leo Whitney 1934-7-10 1513 Lassen 14 mi w of Eagle Lake (near Harvey Valley); Lassen National Forest 1737 Comment
  UC1137689  Scutellaria nana George A. Fischer, Irwin H. Johnson 1933-7-12 F 221 Lassen Lassen National Forest, Lassen Forest and Range Experiment Station Lassen National Forest; , Lassen Forest and Range Experiment S 1722 Comment
  SEINET4891272  Secale cereale M. J. Williams 1974-7-26 74 -I-38 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  UC790980  Secale cereale A. A. Beetle 1941-6-28 2811 Lassen 6 mi s of Ravendale (Observation Peak); Observation Peak Comment
  UC506921  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Lassen Forest 1783 Comment
  CHSC23475  Senecio clarkianus Wayne O. Baum 1971-7-14 71 -61 Lassen N. slope of Gallatin Peak. 2011 Comment
  JEPS109870  Senecio hydrophiloides Dean W. Taylor 2007-6-14 20129 Lassen between Gordon Lake and Bullard Lake, along Forest Road 31N31 0.3 miles NE of junction with Forest Road 34N25 (this the junction at the northwest end of Gordon Lake) 1828 Comment
  JEPS17740  Senecio hydrophiloides Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5413 Lassen 4.4 mi s Patterson Ranger Station (in meadow e edge of Long Valley, s end of the Warner Mountains); Modoc National Forest, Warner Mountains, Long Valley 2057 Comment
  HSC95295  Senecio hydrophilus Gordon Leppig, J. Cromwell 1997-7-27 615 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  SBBG8784  Senecio hydrophilus H. and M. Dearing 1938-7-1 2241 Lassen 12 mi W of Susanville Comment
  UC1070219  Senecio integerrimus var. exaltatus K. E. Bradshaw 1939-5-27 239 Lassen Black Mountain Experimental Forest, Plot 39-1 Lassen National Forest, Halls Flat Quad. 1767 Comment
  RSA0065436  Senecio multilobatus Marion P. Harthill 1972-6-17 811 Lassen Ravendale. 1767 Comment
  JEPS100319  Senecio spartioides Dean W. Taylor 2001-7-12 17830 Lassen Diamond Mountains, headwaters of Rhodes Creek, along Forest Road 24N02X 1996 Comment
  HSC90792  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air mi due S of Susanville. 2256 Comment
  RSA518886  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  CAS-BOT-BC216251  Shepherdia argentea T. C. Fuller 1980-8-6 20320 Lassen On the south slope of the Rush Creek drainage, 0.3 km. south of the Smoke Creek Ranch Road, 2 km. west of teh stateline Comment
  CHSC77230  Sibbaldia procumbens G. Schoolcraft 1997-8-6 2663 Lassen Diamond Mtn. 2316 Comment
  CAS-BOT-BC213324  Sidalcea G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  UC1587031  Sidalcea glaucescens G. Schoolcraft 1991-7-30 2198 Lassen East slope of Widow Mountain 1859 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
  SBBG128040  Sidalcea glaucescens L. Ahart, J. Dittes 2010-7-31 17016 Lassen S side of the rd, ca. 50 yards E of the large culvert, where the rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1516 Comment
  CAS-BOT-BC205766  Sidalcea oregana L. S. Smith 1918-8-12 1031 Lassen Modoc National Forest. Camp One Comment
  CHSC6184  Sidalcea oregana R. Gein 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CHSC83236  Sidalcea oregana Raymond D. Ratliff 1965-8-6 53 Lassen Lassen National Forest, Harvey Valley Allotment (Ashurst Well). Streambed. 1950 Comment
  POM260336  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6644 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC99148  Sidalcea oregana subsp. spicata Lowell Ahart; John Dittes 2008-6-19 14890 Lassen 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
  UC1483814  Silene bernardina G. Schoolcraft 1979-6-7 129 Lassen northern Skidaddle Mountains 2011 Comment
  UC1523715  Silene douglasii Gary Schoolcraft 1981-7-15 512 Lassen near top Fredonyir Peak; near top Fredonyir Peak 2346 Comment
  UC1258485  Silene menziesii G. Schoolcraft 1980-7-28 336 Lassen s Blue Lake; s of Blue Lake 2072 Comment
  SDSU4478  Silene menziesii D. F. Howe 1964-8-1 3908 Lassen Parsnip Creek, Warner Mts., Modoc National Forest. 1829 Comment
  CHSC106846  Silene nuda Barbara Ertter 1988-7-25 7867 Lassen Ridge of Diamond Mts ca 1.5 mi E of Diamond Peak, ca 10 airmiles due S of Susanville. 2255 Comment
  UC1553400  Silene nuda G. Schoolcraft 1988-7-7 1818 Lassen ca 1 mi s Horne Ranch (se corners of Madeline Plains); , s of Horne Ranch 1645 Comment
  RSA716268  Sisymbrium altissimum L. Ahart, John Dittes 2005-6-2 11921 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction. 1460 Comment
  UC1126792  Sisymbrium altissimum E. Sawyer 1935-6-27 224 Lassen Long Valley 1310 Comment
  SEINET11987253  Sisymbrium altissimum J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4135 Lassen 65 mi S of Alturas, along edge of hwy #395 Comment
  HSC102778  Sisyrinchium bellum L. Ahart, John Dittes 2008-6-20 14964 Lassen About 7.0 air mi. NE of Bieber, ~4.0 air mi. NE of Headquarters at Ash Creek State Wildlife Area; ~ 10 yds. west of where the levee road crosses Big Valley Canal, in Big Valley. 1264 Comment
  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
  CDA38565  Sium F. A. Taylor 1939-7-5 s.n. Lassen Bieber. 0 Comment
  UCD128140  Sium suave J. M. Tucker 1950-7-25 1973 Lassen 0.5 mile southwest of Bieber. 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
  POM203787  Solanum triflorum J. T. Howell 1934-6-10 11858 Lassen 3 miles N of Omira. Comment
  CAS-BOT-BC364906  Solidago velutina subsp. californica Clare B. Hardham 1969-8-28 17437 Lassen Slope west of Janesville Comment
  JEPS124384  Sonchus asper subsp. asper Lowell Ahart, John Dittes 2015-7-13 20304 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  SEINET7707308  Sorbus californica G. Schoolcraft 1997-1 2672 Lassen Diamond Mountain, N slope 2317 Comment
  SBBG3122  Sorbus sitchensis H. and M. Dearing 1939-6-12 3644 Lassen S of Lassen Comment
  HSC21349  Sparganium emersum Fred J. Kindel 1955-6-27 Lassen Mt. Meadows Reservoir. Comment
  CAS-BOT-BC213212  Sphaeralcea grossulariifolia Louella Bass 1980-6-10 s.n. Lassen Transplanted to the garden of Edward and Luella Bass in Standish, from Stacy, east of the south end of Honey Lake 1219 Comment
  CAS-BOT-BC149629  Spiraea douglasii Carl B. Wolf 1929-9-1 3779 Lassen Mt. Lassen National Park between Grassy and Snag Lakes Comment
  JEPS128408  Spiraea douglasii Catherine Bauer with Ellen Bauer Benson 2017-8-16 16 Lassen South of Highway 44, North of Butte Lake, at Butte Creek Campground. Santa Clara Valley, National Forest Service, National Forest Campground. Comment
  SEINET7707741  Spiraea douglasii C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  RSA31977  Spiranthes romanzoffiana A. A. Heller 1938-7-28 15297 Lassen About 2 miles east of Westwood. 1524 Comment
  JEPS63054  Stachys ajugoides var. rigida Brown and Wieslander ca. 1914 57 Lassen near Eagle Lake; Martin Sprs. Comment
  UC1483862  Stachys ajugoides var. rigida G. Schoolcraft 1980-8-13 348 Lassen n side Diamond Mtn. 1950 Comment
  SJSU11331  Stachys rigida J. W. Tilden 1960-6-27 1522 Lassen by Moonlight Rd 5 mi E of Westwood 1524 Comment
  NY608067  Stanleya viridiflora G. Schoolcraft 1998-7-14 2763 Lassen Along Karlo Road, 1 mile south of Biscas Reservoir Road. 1356.4 Comment
  UCD115760  Stanleya viridiflora Louella Bass 1982-7-25 10 -82 Lassen near Karlo, about 12 miles north of Litchfield. 1356 Comment
  JEPS51139  Stellaria longipes var. longipes Brown and Wieslander 1922-7-18 52 Lassen Martin Springs; Eagle Lake Comment
  SEINET10537644  Stellaria longipes var. longipes Mary Merello 1993-6-28 Merello 756 Lassen Lassen National Forest. At end of Forest Service Road 31N01 at lake. Pine woodland. 1740 Comment
  CAS-BOT-BC375595  Stephanomeria lactucina Margaret Williams; Steven Williams 1974-7-26 74 -L-12 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CDA18266  Stephanomeria spinosa G. D. Barbe 1974-8-2 1929 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CDA8868  Stephanomeria spinosa E. E. Fix 1946-7-21 Lassen Susanville. 0 Comment
  UCR67447  Stephanomeria virgata George K. Helmkamp 1990-9-23 D- 8 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  UCR244171  Stipa comata Jim Andre, G. L. Clifton 1993-6-3 19701 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  CAS-BOT-BC454187  Stuckenia striata Wm. Anderson 1960-6-16 s.n. Lassen Hartson Reservoir, Honey Lake Waterfowl Management Area Comment
  CHSC5251  Swertia albicaulis var. albicaulis 1944-6-23 Lassen Eagle Lake. 1615 Comment
  CHSC23553  Symphoricarpos rotundifolius var. rotundifolius W. O. Baum 1971-7-5 21 Lassen N slope of Gallatin Peak. 2011 Comment
  CHSC54393  Symphoricarpos rotundifolius var. rotundifolius Vernon H. Oswald 1991-6-25 4694 Lassen Lassen Volcanic National Park. East side of Butte Lake, somewhat south of its outlet. 1842 Comment
  HSC93475  Symphoricarpos rotundifolius var. rotundifolius Gordon Leppig, Tony LaBanca 1998-7-13 964 Lassen Modoc National Forest, Blue Lake Ranch. 1799 Comment
  UC762731  Symphyotrichum ascendens R. F. Hoover 1940-10-1 4654 Lassen Janesville Comment
  CAS-BOT-BC97605  Symphyotrichum campestre James Jokerst 1983-7-23 1867 Lassen Grasshopper Valley Quad. Near Madeline Plains 1614 Comment
  CAS-BOT-BC98934  Symphyotrichum foliaceum var. parryi Alice Eastwood 1912-8-22 1917 Lassen Battle Creek Meadows - Lassen Butte Region 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
  UCD136663  Symphyotrichum spathulatum var. yosemitanum Barbara L. Wilson; R. Brainerd, D. Lytjen, et al. 2004-8-24 11184 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. 1463 Comment
  UCD86203  Taeniatherum caput-medusae Lee E. Wheeler 1960-6-15 Lassen open hillside, edge of valley plain, ca. 4 mi SE/Susanville, Lassen Co. Comment
  JEPS118448  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
  JEPS107459  Taraxia tanacetifolia Lowell Ahart, John Dittes 2005-6-1 11856 Lassen In the center of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the interse