Search Results — 2000 specimen records retrieved (1602 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
  CDA19020  Abies concolor Mark Lubinski 2000-10-12 PDR 1103214 Lassen Sierra Nevada; 1 mi W on State Route 44 and 36, ~5 mi W of Susanville. 0 Comment
  UC1196917  Abies magnifica var. magnifica A. W. and M. Kildale 1926-9-1 2725 Lassen 11 mi n Chester; Lassen National Park, Juniper Lakes 2054 Comment
  JEPS94537  Acer glabrum var. torreyi Vernon Oswald and Lowell Ahart 1997-6-24 8607 Lassen 0.7 mi e of boundary of Lassen National Forest (s of Susanville, on n side of Diamond Mountain, along Forest Road 29N43, 5.4 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1889 Comment
  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
  RSA603232  Acer glabrum var. torreyi C. Epling, Wm. Robinson 1935-7-19 s.n. Lassen Sulphur Spring, Lassen Park Comment
Read comments
May 1 2013
  CHSC4769  Achillea millefolium R. Carter 1967-7-16 619 Lassen Willow Creek Valley, E of Murrer's Ranch, 1.5 mi W of highway 139 on rd to Eagle Lake, ca. 12 mi N of Susanville, on S side on rd. Comment
  HSC4553  Achillea millefolium M. T. Milligan 1964-7-16 136 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  CAS-BOT-BC28649  Achillea millefolium Lassen 1927 G. S. Crew 1927-7-15 78 Lassen Lassen County 1725 Comment
  CAS-BOT-BC260401  Achnatherum hymenoides John Thomas Howell 1974-7-8 50464 Lassen Susanville 1295 Comment
  CHSC52909  Achnatherum hymenoides L. P. Janeway 1990-7-4 3769 Lassen Near the east-side of saddle ca 0.8 mi NE of Meadowview Peak. 1981 Comment
  UC1024755  Achnatherum lemmonii Leo Whitney 1933-7-15 2297 Lassen 25 mi w of upper end of Eagle Lake (Hall's Flat); Lassen National Forest 1737 Comment
  UCD50516  Achnatherum lemmonii Beecher Crampton 1954-7-5 2049 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD50563  Achnatherum lemmonii B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD50603  Achnatherum lemmonii John Thomas Howell 1976-7-19 51980 Lassen Transition Zone forest on Gold Run Creek southwest of Susanville. Lassen County. 1386 Comment
  UCD18959  Achnatherum nelsonii Jack N. Reppert 1965-7-13 17 Lassen Lassen National Forest, Harvey Valley Allotment (HV-17). 1682 Comment
  UCD50843  Achnatherum nevadense B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UC1024805  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-23 3288 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1137662  Achnatherum occidentale subsp. occidentale George A. Fisher and Irwin H. Johnson 1933-7-12 F 215 Lassen Lassen National Forest 1706 Comment
  UC1024959  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-24 3303 Lassen ca. 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UC1143012  Achnatherum occidentale subsp. pubescens August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest 2133 Comment
  UCD32665  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2064 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51192  Achnatherum occidentale subsp. pubescens Beecher Crampton 1964-6-25 7071 Lassen 25 miles n.w. Susanville, State Hwy. 44, Bogard Ranger Station, Lassen National Forest. 1722 Comment
  UCD51216  Achnatherum occidentale subsp. pubescens R. Tofsrud 1947-7-1 222 Lassen 12 mi. E. of Madeline. Comment
  UCD51228  Achnatherum occidentale subsp. pubescens George A. Fischer; Irwin H. Johnson 1933-7-12 F 218 Lassen Lassen County. 1722 Comment
  JEPS102671  Achnatherum speciosum V. H. Oswald, B. Corbin, K. Earll, and G. Schoolcraft 2001-6-2 10034 Lassen NE of Doyle (Fort Sage Mountains, trailhead to top of mountain from the end of a 4WD road) 1798 Comment
  UC1026712  Achnatherum thurberianum Leo Whitney 1935-6-25 3311 Lassen 13 mi w of upper end Eagle Lake; Ashurst Mountain Comment
  UCD51425  Achnatherum thurberianum Beecher Crampton 1954-7-5 2052 Lassen Along Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  UCD51427  Achnatherum thurberianum B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD51441  Achnatherum thurberianum L. Whitney 1935-6-19 3258 Lassen Ashurst Mountain, 13 miles west of upper end of Eagle Lake, Lassen National Forest. 1584 Comment
  UCD55535  Achnatherum thurberianum Beecher Crampton 1954-7-6 2082 Lassen 7 miles north of Madeline, along US highway 395. 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
  SBBG67342  Acmispon americanus S. W. Hutchinson -Jun-1925 539 Lassen Eagle Lake region 1554 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
  CHSC29909  Acmispon americanus var. americanus Robin L. Ondricek 1978-7-15 99 Lassen East side of Lower Dry Lake. 1645 Comment
  CHSC30612  Acmispon denticulatus L. Maslin 1975-7-1 12 Lassen On the road to Lower Dry L. from Eagle Lake Field Station, 2 mi. ELFS. 1524 Comment
  JEPS120844  Acmispon denticulatus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18746 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
  CHSC58841  Acmispon nevadensis var. nevadensis Vernon H. Oswald; Lowell Ahart 1992-7-16 5106 Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  UC467713  Aconitum columbianum Franklin P. Nutting 1900-7-2 Lassen Pine Creek Comment
  CAS-BOT-BC412872  Aconogonon davisiae John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50667 Lassen NE. of Diamond Mt. 2255 Comment
  CAS-BOT-BC110715  Aegilops cylindrica John Thomas Howell 1974-7-8 50505 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC65107  Agastache parvifolia Vernon H. Oswald 1995-7-24 7132 Lassen N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  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
  SEINET10499368  Agastache parvifolia Mary Merello 1993-6-28 Merello 746 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1483811  Agastache urticifolia G. Schoolcraft 1979-7-5 122 Lassen n face Observatioin Peak; n face of Observation Peak 1828 Comment
  UC104571  Agastache urticifolia F. Stephens 1894-7-15 Lassen Madeline Divide Comment
  CHSC23487  Ageratina occidentalis Wayne O. Baum 1971-7-22 71 -59 Lassen E slope of Gallatin Peak. 2072 Comment
  SEINET10757871  Ageratina occidentalis Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 836 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CHSC91811  Agoseris glauca G. Douglas Barbe 1974-8-20 1922 Lassen Upper Lond Valley. Hallelujah Junction, northwest corner of jct. of US Hwy 395 and Hwy 70. 1524 Comment
  RSA715617  Agoseris glauca var. dasycephala L. Ahart, John Dittes 2005-6-1 11851 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 air miles northwest of the intersection of Scott Road and Highway 70, 3.9 air miles northwest of Hallelujah Junction. 1449 Comment
  POM33406  Agoseris glauca var. dasycephala F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
Read comments
Mar 6 2011
  JEPS107469  Agoseris glauca var. glauca Lowell Ahart, John Dittes 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS100463  Agoseris grandiflora Dean W. Taylor 2001-6-28 17818 Lassen Diamond Mountains, Crystal Peak, along ridgeline at the summit 2377 Comment
  CAS-BOT-BC22893  Agoseris heterophylla Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-12 82- 19 -1 Lassen Smoke Creek Rd., 0.1 mi E of Hwy 395 1371 Comment
  CAS-BOT-BC22894  Agoseris heterophylla John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49168 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC107994  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
  UC1924573  Agoseris heterophylla var. heterophylla Debra Valov 2006-5-29 2006023 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1280 Comment
  JEPS107468  Agoseris monticola Lowell Ahart, John Dittes 2005-6-1 11851 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  UC1125451  Agoseris parviflora A. Simontacchi 1940-6-8 838 Lassen 1.2 mi ne Ebey Lake; Halls Flat Quad. 1699 Comment
  UCR7835  Agropyron cristatum Marilyn Malin 1968-6-21 247 Lassen Brockman Flats Lava Bed,W side of Eagle Lake, site of 1956 Merrill burn 1600 Comment
  CDA1684  Agropyron cristatum subsp. pectinatum G. D. Barbe 1974-8-2 1919 Lassen Hallelujah Junction, US 395 at Hwy 70, northwest corner. Comment
  RSA299167  Agropyron desertorum J. T. Howell 1974-7-8 50468 Lassen Susanville 1296 Comment
  SEINET10509717  Agropyron desertorum Douglas G. LeDoux, David B. Dunn 1973-5-24 LeDoux 859 Lassen Collected at jct of hwy 70 & 395 at arco station. Comment
  SEINET10551977  Agropyron elongatum John Thomas Howell 1975-7-23 Howell 51409 Lassen Along Hwy 395 between Johnstonville and Janesville. Densely cespitose. 1280 Comment
  UCD18954  Agropyron saundersii Jack N. Reppert 1965-7-12 24 Lassen Lassen National Forest, Harvey Valley Allot. (HV 17-11). 1682 Comment
  UC60210  Agrostis J. Burtt Davy Jun 17 1897-Jun 24 1897 3303 Lassen Honey Lake Valley Comment
  HSC95151  Agrostis exarata Gordon Leppig 1998-7-12 955 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  UC589901  Agrostis exarata H. S. Yates 1936-8-11 6067 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  UCD52292  Agrostis exarata L. Whitney 1933-8-1 s.n. Lassen Near Slate Creek. Comment
  SEINET4341020  Agrostis exarata G. Schoolcraft 1994-8-1 2382 Lassen About 2 miles west of Boot Lake 2256 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
  JEPS28273  Agrostis idahoensis George W. Gillett 1957-7-22 877 Lassen near Snag Lake south shore (100 yards above lake); Lassen Volcanic National Park 1850 Comment
  UC1024638  Agrostis pallens Leo Whitney 1934-7-10 2225 Lassen meadow near Harvey Spring (ca 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  UCD53252  Agrostis pallens M. S. Baker; Frank Nutting 1894-7-21 s.n. Lassen Eagle Lake. 1524 Comment
  UCD53279  Agrostis scabra August L. Hormay 1932-7-20 s.n. Lassen Lassen National Forest. Bogard Ranger Station. Comment
  RSA129202  Agrostis stolonifera H. S. Yates 1936-8-11 6069 Lassen Bexter Creek [Baxter? creek]. Susanville. 1280 Comment
  HSC63727  Aliciella leptomeria Teresa Prendusi 1980-5-19 1134 Lassen Saddle Rock. 1524 Comment
  SEINET14163171  Aliciella triodon A. Tiehm 1980-1 5756 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  RSA0066567  Aliciella triodon Marcus E. Jones 1897-6-25 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC267065  Alisma gramineum Malcom A. Nobs; S. Galen Smith 1949-7-22 1074 Lassen Marshes along Willow Creek, Willow Creek Valley, 10 miles N of Susanville Comment
  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
  JEPS121269  Alisma lanceolatum Lowell Ahart 2013-7-22 18841 Lassen W margin of duck field, about 80 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SEINET8193719  Allium M. J. Williams 1969-6-14 s.n. Lassen Ravendale. 1615 Comment
  CHSC7661  Allium acuminatum Beverley J. Wise 1969-5-18 138 Lassen 17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  HSC81650  Allium acuminatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6026 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
  UC3061  Allium amplectens M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  UC3062  Allium amplectens M. S. Baker and F. Nutting 1894-7-1 Lassen Dixey Mts. Comment
  UC3055  Allium anceps Mrs. C. C. Bruce June, 1898 Lassen Madeline Plains Comment
  CHSC64812  Allium atrorubens var. atrorubens Vernon H. Oswald 1995-6-7 6836 Lassen Modoc Plateau, on N side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi E of Wendel, NE of Susanville. 1237 Comment
  CAS-BOT-BC470922  Allium lemmonii G. Schoolcraft 1993-6-10 2287 Lassen Approx. 9.5 miles east of Madaline on Clark Valley Road 1828 Comment
  CAS-BOT-BC472752  Allium lemmonii Elmer I. Applegate 1897-6-3 3029 Lassen South end of Madeline Plains Comment
  SEINET3885792  Allium lemmonii Noel H. Holmgren, Patricia K. Holmgren 1978-6-12 8934 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance east-southeast of Ravendale.; 0 1768 Comment
  CAS-BOT-BC474048  Allium parvum Ethel S. Willits 1940-4-28 199 Lassen South of Surprise Valley, Modoc County 1371 Comment
  UCD138584  Allium parvum G. Schoolcraft 1993-4-27 2256 Lassen Ash Valley RNA 16 miles east of Adin, Ca. 1554 Comment
  CHSC68887  Allium platycaule Vernon Oswald; Lowell Ahart 1997-6-24 8624 Lassen South of Susanville on the north side of Diamond Mtn. On Forest Rd. 21N52, 1.0 mi southwest of its junction with 29N43. 2164 Comment
  RSA59747  Allium platycaule E. K. Balls 1950-5-19 14782 Lassen 16.5 miles west of Madeline on road from Adin. 1677 Comment
  CHSC68894  Allophyllum integrifolium Vernon Oswald; Lowell Ahart 1997-6-24 8604 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). Bordering the stream. 1655 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
  RSA0011565  Alopecurus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46987 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  HSC63950  Alopecurus aequalis Teresa Prendusi 1980-7-9 1115 Lassen Horse Camp Spring, approximately 39 mi. N of spring 1707 Comment
  JEPS88576  Alopecurus aequalis Vernon H. Oswald and Lowell Ahart 1996-6-24 7873 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), along Papoose Creek where it leaves the n end of the meadow, Modoc Plateau); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  RSA264236  Alopecurus aequalis A. A. Beetle 1948-6-28 2795 Lassen 10 miles west of Chester, rte. 36 Comment
  UCD55821  Alopecurus aequalis Mrs. Austin 1894-6-1 s.n. Lassen Willow Creek Valley. Comment
  SEINET10510844  Alopecurus aequalis Alan A. Beetle 1941-6-28 Beetle 2795 Lassen 10 miles west of Chester, rte 36, open meadow near small stream. Assoc. Scirpus congdoni, Deschampsia, Ranunculus. Comment
  SEINET10967764  Alopecurus aequalis Vernon H. Oswald, Lowell Ahart 1995-8-14 Oswald 7194 Lassen T33N R14E NE1/4 Sec. 10, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd.) Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville. 1676 Comment
  CHSC110894  Alopecurus carolinianus Lowell Ahart; John Dittes 2012-7-9 18289 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC112469  Alopecurus carolinianus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18731 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  OBI77305  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  RSA0029642  Alopecurus geniculatus Anthony Baniaga 2011-7-23 459 Lassen Lassen National Forest. Poison Lake. 1700 Comment
  UC53353  Alopecurus geniculatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3372 Lassen Honey Lake Valley Comment
  CAS-BOT-BC137990  Alopecurus pratensis John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49219 Lassen Sierra Nevada. Elysian Valley northwest of Janseville. 1325 Comment
  CHSC60728  Alyssum desertorum Vernon H. Oswald; Lowell Ahart 1993-6-14 5534 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). Along the edge of the road. 1566 Comment
  UC1583963  Alyssum desertorum G. Schoolcraft 1990-5-15 2046 Lassen about 3 mi s of Nubieber; John's Valley area 1402 Comment
  UC1924262  Alyssum minus subsp. micranthum Debra Valov 2004-5-31 2004226 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  JEPS93815  Alyssum simplex Vernon H. Oswald and Lowell Ahart 1998-6-4 9144 Lassen s of Constantia (at parking area at end of spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  CHSC106172  Amaranthus blitoides Lowell Ahart; John Dittes 2010-8-30 17090 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  JEPS78111  Amaranthus blitoides Gary W. Zamzow 1972-7-18 86 Lassen beside Highway 395, 3 mi n Hallelujah Junction 1371 Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  JEPS40951  Ambrosia acanthicarpa R. F. Hoover 1940-10-5 4666 Lassen Wendel Comment
  UCD143900  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen along State Highway 70 at Beckwourth Pass around 4.3 miles west of its junction with US Highway 395 or 1.6 miles east of Sierra Valley. 1584 Comment
  UCD112861  Amelanchier alnifolia Beecher Crampton 1954-5-11 1881 Lassen Beckwourth Pass, Plumas. 1588 Comment
  RSA38464  Amelanchier pallida Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford. 1524 Comment
  CAS-BOT-BC222252  Amsinckia Alice Eastwood; John Thomas Howell 1940-6-11 7967 Lassen Eastern Fall River Valley Comment
  CHSC99503  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
  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
  JEPS114629  Amsinckia menziesii var. menziesii Lowell Ahart, John Dittes 2008-6-22 15042 Lassen On the east side of the road levee, open meadow area, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  CHSC106685  Amsinckia tessellata B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC25304  Amsinckia tessellata Pauleen Broyles 1977-6-1 151 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  RSA622142  Amsinckia tessellata var. tessellata B. J. Cox, D. B. Dunn 1971-6-2 2574 Lassen 3 mi. S. of Hallelujah Jct., on U.S. Hwy. 395, Jct. of U.S. 395 & Calif. 70. Comment
  CHSC5192  Anaphalis margaritacea 1944-7-19 Lassen Juniper Lake. 2055 Comment
  UCD159579  Anaphalis margaritacea D. S. Park 2011-8-24 316 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  CAS-BOT-BC45257  Ancistrocarphus filagineus B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6562 Lassen US Highway 395, 6.0 km N of railroad crossing and 20.1 km N of Litchfield. 1330 Comment
  CHSC64748  Ancistrocarphus filagineus Vernon H. Oswald 1995-5-31 6809 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi E of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CAS-BOT-BC45258  Ancistrocarphus filagineus H. D. Ripley; R. C. Barneby 1944-5-30 5862 Lassen North of Viewland 137 Comment
  JEPS29744  Anisocoma acaulis Rimo Bacigalupi and L. R. Heckard 1962-5-29 8499 Lassen 2.7 mi n of Milford, along US Hwy 395 1219 Comment
  CHSC12433  Antennaria Robert Severin 1969-6-26 22 Lassen Papoose Meadow, 4 mi s of E.L.B.S.; 1/4 mi n of Cow Camp. 1630 Comment
  CHSC36440  Antennaria argentea Jeff Megorden 1981-6-13 4 Lassen NE side of Galletin Peak. 1584 Comment
  UC773954  Antennaria argentea L. R. Short and Wm. Gansberg 1936-6-10 S- 414 Lassen Burgess Spr. Exp. Range 1856 Comment
  CHSC54170  Antennaria dimorpha Vernon H. Oswald 1991-5-28 4624 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  HSC69048  Antennaria dimorpha Gary Schoolcraft 1980-4-8 203 Lassen On east side of Schaffer Mtn. about 1/2 mile west of Hwy. 395 1463 Comment
  CHSC60809  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1993-6-28 5614 .1 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
  CHSC65087  Antennaria geyeri Vernon H. Oswald; Lowell Ahart 1995-7-24 7130 Lassen High Cascade Range. N of Lake Almanor on Forest Route 10, ca. 3 mi N of Silver Lake and 1 mi W of Upper Stephens Mdws., just S of Pine Creek. 1950 Comment
  CHSC86973  Antennaria geyeri L. P. Janeway 2001-6-20 7206 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  HSC82198  Antennaria luzuloides Thomas W. Nelson, Jane P. Nelson 1980-7-6 6053 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  UC1523764  Antennaria luzuloides Gary Schoolcraft 1981-7-8 498 Lassen near Coulthurst Flat 1920 Comment
  UC506930  Antennaria luzuloides George A. Fischer and Irwin H. Johnson 1933-7-14 F 241 Lassen below Patterson R. S.; Lassen National Forest 1737 Comment
  UC1609117  Antennaria rosea Vernon H. Oswald and Lowell Ahart 1993-6-14 5526 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
  UC584289  Antennaria rosea G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2308 Lassen w of, crest of range head of Stony Ridge Milford; Stony Ridge 1930 Comment
  UCR18725  Antennaria rosea Frank C. Vasek 1975-7-11 750711- 20 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CHSC65289  Anthemis cotula Vernon H. Oswald; Lowell Ahart 1995-8-14 7175 Lassen Modoc Plateau. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  JEPS49803  Apocynum androsaemifolium Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  UC1123464  Apocynum androsaemifolium H. P. Hagge 1929-9-12 28 Lassen Logan Mt. Eagle Lake Quad., Logan Mt. Comment
  UC1035982  Apocynum androsaemifolium Helen K. Sharsmith 1955-6-27 4516 Lassen adjacent to Hwy. 89 n. of Hat Creek Ranger Station; Lassen Nat'l Forest 1158 Comment
  CHSC75442  Apocynum cannabinum Vernon H. Oswald; Lowell Ahart 1999-6-9 9739 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. 1356 Comment
  CHSC1430  Aquilegia formosa K. Chew 1954-7-9 Lassen Along Pine Creek just below Stephens meadow. 1828 Comment
  CHSC30563  Aquilegia formosa Sori H. Shad 1970-6-26 3 Lassen Found in Murrer, S upper Meadow in a silty soil. 1584 Comment
  CAS-BOT-BC392213  Aquilegia formosa Lassen 1927 G. S. Crew 1927-7-15 79 Lassen Lassen National Forest. Bogard R.S. 1725 Comment
  RSA0126363  Arabis glabra Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain. Susanville. Perkin s Ranch. 1829 Comment
  UC10185  Arabis holboellii var. retrofracta M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  NY114397  Arabis microphylla var. microphylla Anonymous 1987-6-16 1748 Lassen Skedaddle Mountains 1828.8 Comment
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Apr 20 2012
  JEPS53113  Arabis puberula M. S. Baker and F. P. Nutting 1894-7-2 Lassen s. side Dixey Mts. Comment
  NY119564  Arabis sparsiflora var. sparsiflora D. W. McNeal 1983-6-5 2842 Lassen Above co. rd. #201 above the N shore of Eagle Lake, 2.9 miles W of the jct. of Hwy. 139. Comment
  SEINET1912095  Arceuthobium abietinum R. L. Mathiasen 2010-1 1062 Lassen 3.8 km N of jct. of Routes 89 and 36 on Rte. 89. Ca. 3 km S of S entrance to Lassen Nat. Park 1900 Comment
  CAS-BOT-BC45899  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  HSC67173  Arctostaphylos patula J. P. Smith, J. O. Sawyer 1972-5-6 5238 Lassen Lassen National Forest, Boundary Campground on Hwy. 89 S of Burney 1067 Comment
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Apr 29 2013
  NY223210  Arctostaphylos patula P. A. Munz 1947-5-18 11865 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1508.8 Comment
  SEINET7263418  Arctostaphylos patula E. Murin 1967-5-20 s.n. Lassen Eagle Lake road at Galleton turnoff west of Susanville Comment
  CAS-BOT-BC42164  Arctostaphylos patula subsp. patula Louella Bass 1974-4-15 151 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC42165  Arctostaphylos patula subsp. patula Ida M. Gifford 1933-12-27 s.n. Lassen Near Susanville 1310 Comment
  UC584338  Arenaria aculeata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2262 Lassen s Susanville (Bare summit ridge and ridges south west of Diamond Mt.) 2164 Comment
  RSA702604  Arenaria congesta L. P. Janeway 2004-6-26 8141 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  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
  UC1924211  Arenaria congesta var. subcongesta Debra Valov 2004-6-9 2004272 Lassen Hwy 139 c. Mile marker 37 1650 Comment
  UC8098  Arenaria congesta var. subcongesta M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UC584297  Arenaria congesta var. suffrutescens G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2206 Lassen just w of the town on Inspiration Point; Susanville 1280 Comment
  JEPS124520 Image available Argemone munita Virginia Hardham 1965-7-12 115 Lassen 1.9 mi. north of Milford on HW 395 Comment
  CHSC65320  Argemone munita subsp. rotundata Vernon H. Oswald; Lowell Ahart 1995-8-14 7204 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) near the S end of Horse Lake, 15.3 mi W of Hwy. 395, N. of Susanville. 1566 Comment
  CAS-BOT-BC401790  Argemone munita subsp. rotundata P. Monnet 1913-7-1 945 Lassen Doyle Comment
  CHSC27596  Arnica chamissonis George Deniso 1978-7-21 96 Lassen E end of Mahogany Lake - SE of Eagle L. 2060 Comment
  CHSC59072  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1992-8-25 5192 Lassen Lassen Volcanic National Park. West shore of Snag Lake SW of the islands. 1851 Comment
  UCD129113  Arnica chamissonis Chandler V. Jensen 1962-7-1 s.n. Lassen north of Susanville, Secret Valley near Said Reservoir. Comment
  HSC104020  Arnica chamissonis subsp. foliosa L. Ahart, John Dittes 2008-6-20 14902 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
  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
  UC726334  Arnica cordifolia A. A. Heller 1938-6-4 15146 Lassen 1 mi e, on State Highway #36 Fredonyer Pass 1737 Comment
  CAS-BOT-BC82678  Arnica longifolia L. S. Smith 1918-7-22 1007 Lassen Blue Lake, Modoc National Forest 1874 Comment
  UCR7843  Arnica longifolia Marilyn Malin 1968-6-27 257 Lassen Lassen National Forest. Papoose Valley Meadow [Papoose Meadows, along Papoose Creek south of Eagle Lake, 2 mi south of Gallatin Beach.] 1620 Comment
  CHSC64861  Arnica mollis Vernon H. Oswald; Lowell Ahart 1995-6-26 6921 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  SD113192  Arnica mollis Darley F. Howe 1964-8-2 3920 Lassen East Creek, Warner Mountains, Modoc National Forest 2010 Comment
  CHSC29954  Arnica nevadensis Robin L. Ondricek 1978-5-25 28 Lassen .4 mi N of Lake Forest Development on Co. Rd. A1. 1828 Comment
  UC1776712  Arnica parryi G. Schoolcraft 1994-8-2 2400 Lassen About 2 miles W of Boot Lake 2286 Comment
  UCD129145  Arnica sororia G. Schoolcraft 1994-6-9 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
  CHSC118795  Artemisia arbuscula subsp. arbuscula L. P. Janeway 2015-8-9 11823 Lassen Warner Mountains. Along Road 39N06 at the 64 Road (39N01- the road to Patterson Camprgound); 0.7 air-km west of Long Valley, 5.3 air-km northeast of Blue Lake. 2179 Comment
  RSA359361  Artemisia arbuscula subsp. arbuscula L. M. Shultz, John Shultz 1985-6-23 8603 Lassen 41 miles north of Susanville on Hwy 395. 1433 Comment
  UC1137582  Artemisia arbuscula subsp. arbuscula A. Simontacchi 1940-9-16 947 Lassen 1.3 mi ne of Ebey Lake; Lassen National Forest, Halls Flat Quadrangle 1691 Comment
  CHSC77184  Artemisia arbuscula subsp. thermopola G. Schoolcraft 1997-8-6 2659 Lassen Diamond Mtn. 2316 Comment
  SBBG95821  Artemisia cana G. K. Helmkamp 1990-9-23 A- 5 Lassen ca. 3 mi E of Susanville, along St Hwy 36 1341 Comment
  UC747153  Artemisia cana subsp. bolanderi G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley Lassen National Forest, Harvey Valley 1676 Comment
  CAS-BOT-BC84832  Artemisia cana subsp. cana G. Thomas Robbins 1945-10-18 2157 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  CAS-BOT-BC84831  Artemisia cana subsp. cana Elmer I. Applegate 1897-6-3 859 Lassen North end of Madeline Plains, northern Lassen County. Comment
  JEPS37007  Artemisia dracunculus W. L. Jepson 1918-8-3 7799 Lassen Honey Lake Valley 1219 Comment
  JEPS97304  Artemisia ludoviciana subsp. ludoviciana Vernon H. Oswald and L. Ahart 1995-8-14 7196 Lassen T33N R14E NE1/4 Sec. 10, 5500 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 2.5 mi W of Hwy. 395 at a small intermittent stream, N of Susanville 1676 Comment
  CAS-BOT-BC90778  Artemisia ludoviciana subsp. ludoviciana Louella Bass 1980-5-1 s.n. Lassen Standish, Honey Lake Valley Comment
  SEINET230067  Artemisia nova Leila M. Shultz, John S. Shultz 1985-6-23 8602 Lassen 41 miles north of Susanville on Highway 395 1433 Comment
  RSA0092309  Artemisia tridentata subsp. tridentata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31432 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
  UC74062  Artemisia tridentata subsp. tridentata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley, Amedee Comment
  CAS-BOT-BC99281  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  CHSC77188  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1994-9-13 2431 Lassen Just above gate along road to Fredonyer Pk. lookout. 2255 Comment
  SEINET195654  Artemisia tridentata subsp. vaseyana G. Thomas Robbins 1945-10-7 2155 Lassen Lassen National Forest; Harvey Mountain, 2-3 miles northeast of burgess Spring, Harvey Valley 1676 Comment
  CHSC105766  Asclepias fascicularis Nick Otting 2005-7-28 Lassen Five Springs Creek, downstream from Five Springs. 1356 Comment
  CHSC115816  Asclepias fascicularis Lowell Ahart; John Dittes 2015-7-14 20325 Lassen On the edge of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1269 Comment
  CHSC51995  Asclepias fascicularis Cindy Prouty 1978-7-3 23 Lassen SE Eagle L.--near Eagle Lake Field Station. 1572 Comment
  CHSC60269  Asclepias fascicularis P. V. Caldwell 1972-6-24 298 Lassen Rocky beach off road to beach near the tunnel at Eagle Lake B. S. Comment
  CHSC6222  Asclepias fascicularis M. West 1946-7-10 Lassen Pine Creek, Eagle Lake. 1584 Comment
  JEPS127355  Asclepias fascicularis Lowell Ahart, John Dittes 2016-7-13 21150 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  POM181067  Aster M. S. Jussel 1931-9-6 s.n. Lassen Sulphur Works, Mt. Lassen 2134 Comment
  RSA516358  Aster campestris Barbara Ertter 1987-7-25 7311 a Lassen About 22 air miles NW of Susanville, Pine Creek Valley at jct. of Bridge Creek Springs Rd. 1738 Comment
  POM261533  Aster eatonii Alice Eastwood 1912-8-22 1918 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  CHSC117759  Astragalus agrestis Virginia Dains; Joanne Crawford 2016-7-13 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 8 km northwest of Termo, 4.7 km west of Highway 395, 150 meters south of agricultural fields. 1617 Comment
  RSA0006693  Astragalus agrestis H. D. Ripley, R. C. Barneby 1944-5-30 5976 Lassen North of Termo; 1662 Comment
  CAS-BOT-BC177434  Astragalus andersonii John Wynn Gillespie; Doris Kildale Gillespie 1930-5-14 9378 a Lassen 5 miles west of Susanville on Red Bluff road Comment
  CAS-BOT-BC177436  Astragalus andersonii John Thomas Howell 1962-6-19 37890 Lassen 3 miles south of Hallelujah Junction 1524 Comment
  CDA26599  Astragalus andersonii T. C. Fuller 1965-6-3 13608 Lassen Driveway to the cemetery, Janesville. 0 Comment
  CAS-BOT-BC177444  Astragalus argophyllus var. argophyllus Arnold Tiehm; Gary Schoolcraft; Margaret Williams 1986-5-12 10347 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek 1341 Comment
  RSA362358  Astragalus argophyllus var. argophyllus A. Tiehm, Gary Schoolcraft 1986-5-12 10347 Lassen 1 road mile west of the state line on dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341 Comment
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Aug 12 2008
  CAS-BOT-BC178761  Astragalus canadensis var. brevidens John Thomas Howell 1934-7-8 12504 Lassen Spalding's, Eagle Lake Comment
  POM204047  Astragalus canadensis var. brevidens J. T. Howell 1934-7-8 12504 Lassen Spaldings Resort; Eagle Lake Comment
  HSC69613  Astragalus curvicarpus Gary Schoolcraft 1979-6-19 77 Lassen Just N of West Painter Flat Rd. intersection. 1720 Comment
  RSA0028049  Astragalus curvicarpus John F. Emmel 1996-7-14 1423 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  CHSC7676  Astragalus curvicarpus var. curvicarpus Beverly J. Wise 1969-5-18 53 Lassen 7.7 mi. East of Susanville on the south side of Las. Co. Rd. 215. 1341 Comment
  RSA59356  Astragalus curvicarpus var. curvicarpus E. K. Balls 1950-5-21 14825 Lassen Near Standish, Hwy 395, 7 miles from jct of Hwy 36 and 395. 1250 Comment
  CDA26665  Astragalus filipes G. D. Barbe 1982-7-12 3873 Lassen East base of Dry Valley Ridge along Westside Road, 3 miles north of Dry Valley Gap (Thermo-Grasshopper Road), Madeline Plains. Comment
  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
  JEPS95714  Astragalus filipes Vernon H. Oswald and L. Ahart 1995-6-19 6883 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. Erect, many-stemmed herbaceous perennial. Corolla pale cream. 1371 Comment
  NY658506  Astragalus filipes M. S. Baker 1894-6-30 s.n. Lassen Big Valley Comment
  UC1583579  Astragalus filipes G. Schoolcraft 1990-6-13 2093 Lassen in John's Valley about 4 mi s Nubierber; s of Nubieber in John's Valley 1371 Comment
  CAS-BOT-BC182956  Astragalus filipes Alice Eastwood; John Thomas Howell 1940-6-16 8353 Lassen Constantia Comment
  RSA111097  Astragalus filipes H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-15 5459 Lassen Volcanic mesa E. of Viewland. 1311 Comment
  CAS-BOT-BC186858  Astragalus gibbsii Louella Bass 1973-6-3 96 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC186862  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford 1264 Comment
  POM24783  Astragalus gibbsii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET3142990  Astragalus gibbsii E. K. Balls 1950-5-9 15949 Lassen 6 mi S of Doyle, Hwy 395 1372 Comment
  CAS-BOT-BC186859  Astragalus gibbsii John Thomas Howell 1974-7-10 50515 Lassen Janesville 1295 Comment
  CAS-BOT-BC186867  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1942-5-22 4541 Lassen Loyalton 1524 Comment
  SEINET10838317  Astragalus gibbsii Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2589 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and california hwy 36 to Susanville, near johnstonville. 1311 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  CHSC83623  Astragalus inversus L. P. Janeway 2001-6-28 7237 Lassen High Cascade Range. Southeast slope of Cone Mountain, 0.8 km south-southeast of the summit; along Road 33N41Y 0.2 km northwest of Road 33N41YD. 1950 Comment
  RSA517314  Astragalus inversus Barbara Ertter 1987-7-25 7314 Lassen Ca 27 airmiles NW of Susanville, FR33N02 to Harvey Valley W of jct w/ FR33N04 1737 Comment
  POM23660  Astragalus iodanthus Jos. Burtt Davy s.n. Lassen Amadee Comment
  JEPS91412  Astragalus lemmonii Dean Wm. Taylor with Glenn Clifton 1990-6-12 10881 Lassen Ash Valley, along Ash Creek, at the crossing of Road 527 (Forest Road 39N08) 1554 Comment
  CHSC828  Astragalus lentiginosus var. lentiginosus 1944-6-26 Lassen Eagle Lake. 1584 Comment
  JEPS114628  Astragalus lentiginosus var. lentiginosus Lowell Ahart, John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber 1268 Comment
  RSA754376  Astragalus lentiginosus var. lentiginosus Brian Knaus 2005-6-14 136 Lassen W of Susanville, at junction of hihways 26 and 44. 1502 Comment
  CHSC64786  Astragalus malacus Vernon H. Oswald 1995-5-31 6814 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 2.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1341 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
  NY676224  Astragalus malacus B. M. Bartholomew 1993-5-13 6551 Lassen Just south of Ravendale 1580 Comment
  POM45991  Astragalus malacus R. M. Austin 1897-05 400 Lassen Madaline plains. Comment
  UC1128893  Astragalus obscurus A. Simontacchi 1940-5-17 748 Lassen 1.1 mi ssw Dixie Spring (Lassen National Forest); Halls Flat Quad., , ssw of Dixie Sprin Comment
  UC65741  Astragalus pulsiferae P. B. Kennedy 1901-6-10 Lassen R.R. Station Constantia (Constantia) Comment
  CAS-BOT-BC192854  Astragalus pulsiferae var. pulsiferae John Thomas Howell 1955-7-19 30818 Lassen East side of Beckwourth Pass 1493 Comment
  RSA111760  Astragalus pulsiferae var. pulsiferae H. D. Ripley, R. C. Barneby 1944-5-30 5967 Lassen North of Secret Valley. 1616 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
  CHSC13620  Astragalus purshii M. S. Taylor 1974-6-20 257 Lassen Ca. 400 yds n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1554 Comment
  HSC36246  Astragalus purshii John Rehling 1975-5-15 78 Lassen Along Hwy. 395 just before the turnoff to Janesville Comment
  CHSC57280  Astragalus purshii var. lagopinus Mary Meyer 1980-7-14 Lassen Ash Valley. 1524 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
  RSA121821  Astragalus purshii var. purshii L. R. Short, J. Warren 1936-6-11 S- 402 Lassen Burgess Spring, Exp Range. 1790 Comment
  CAS-BOT-BC194096  Astragalus purshii var. purshii Alice Eastwood; John Thomas Howell 1940-6-16 8345 Lassen Jonesville Comment
  CAS-BOT-BC192972  Astragalus purshii var. tinctus John Thomas Howell 1934-6-10 11862 Lassen Honey Lake Valley 37 miles s. of Susanville Comment
  UC604677  Astragalus purshii var. tinctus Farris Farris 1935-5-20 Lassen three mi sw Susanville; sw of Susanville 1310 Comment
  SEINET10490025  Astragalus purshii var. tinctus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17789 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridentata pinyon pine Jeffery pine along high ridge and sandy wash. 1402 Comment
  POM25988  Astragalus whitneyi Marcus E. Jones 1897-6-28 s.n Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC584308  Astragalus whitneyi G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2275 Lassen sw Diamond Mt. (s of Susanville); sw of Diamond Mt., s of Susanville 2164 Comment
  CHSC5283  Astragalus whitneyi var. confusus J. Wolf 1946-6-17 Lassen Eagle Lake. Mt. Freedonyer. 2286 Comment
  SEINET10490007  Astragalus whitneyi var. confusus David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17770 Lassen Approx 12 mi s of adin on calif hwy 139, in basalt and clay; along edge of road On rolling knoll, in artemisia juniper assoc. 1372 Comment
  SEINET3025881  Astragalus whitneyi var. sonneanus Marcus E. Jones 1897-6-28 Lassen Top of Diamond Peak, Susanville, Perkins Ranch. 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
  NY526733  Atriplex canescens R. F. Hoover 1940-10-5 4668 Lassen Wendel Comment
  CHSC109992  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 A Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  UCR244045  Atriplex gardneri var. falcata Jim Andre 1993-6-1 19715 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  SEINET515856  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 Comment
  CHSC76092  Atriplex heterosperma Lowell Ahart; Vernon Oswald 1999-9-13 8204 Lassen On the west side of the dirt road and 1/4 mi south of the sign in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1207 Comment
  UCD50220  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  RSA122664B  Avena sativa A. Simontacchi 1940-6-13 854 Lassen 3.4 miles W.S.W. of Patterson Mtn.; Halls Flat 1738 Comment
  CAS-BOT-BC106572  Balsamorhiza deltoidea Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CHSC71070  Balsamorhiza hirsuta Vernon H. Oswald; Lowell Ahart 1998-5-22 9089 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  JEPS1758  Balsamorhiza hookeri Milo S. Baker 1952-5-23 12432 Lassen 1/2 mi w of, along Hwy. 36 Fredonyer Pass 1752 Comment
  CAS-BOT-BC106495  Balsamorhiza hookeri Doris Kildale Gillespie 1930-5-12 9318 Lassen Fredonia Pass near Susaville Comment
  UC336215  Balsamorhiza hookeri unknown Lassen near Susanville Comment
  CHSC67158  Balsamorhiza hookeri var. lanata James D. Jokerst 1994-5-2 4040 Lassen N of Wendel, E of Hwy 395 and railroad, S end of Secret Valley. Comment
  SEINET10534911  Balsamorhiza incana Billy Joe Cox 1971-6-2 Cox 3102 Lassen 4 mi. S of Adin along CA Hwy. 139 in basalt-clay; valley floor in Artemisia. 1341 Comment
  UCD20370  Balsamorhiza macrolepis Tom Vestal DVM 2002-5-23 s.n. Lassen south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir. Comment
  CHSC67422  Balsamorhiza macrolepis var. platylepis James D. Jokerst 1991-5-29 3300 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  UC1036000  Balsamorhiza sagittata Helen K. Sharsmith 1955-6-22 4499 Lassen 5 mi beyond Blue Lake on the road to Likely Blue Lake (Warner Mountains, Modoc National Forest); Modoc National Forest, Warner Mountains 1767 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
  HSC26615  Barbarea orthoceras D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19151 Lassen 3 mi. N of Westwood Comment
  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
  SEINET10479070  Bassia hyssopifolia Mary Susan Taylor 1974-7-8 Taylor 263 Lassen Ca. 1 mi N of Honey Lake, ca. 1 mi S of Standish, Honey Lake Wildlife Refuge. Comment
  SJSU9993  Beckmannia syzigachne C. L. Kline 1965-7-13 195 Lassen 1.8 mi E of Nubieber on Highway 299 2493 Comment
  UC37450  Beckmannia syzigachne J. Burtt Davy Jun 17 1897-Jun 24 1897 3315 Lassen Honey Lake Valley Comment
  UC573777  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 mi ese Susanville; Susanville Quadrangle 1280 Comment
  CHSC110167  Berberis aquifolium var. aquifolium V. Lockie 2010-5-1 Lassen Location: Just off of Highway 139, east side of road, approx. 8.25 miles NE of Susanville, CA on Antelope Mountain. 1630 Comment
  UCR182884  Berteroa incana D. Mcdonald 2005-7-18 PDR 1307852 Lassen Modoc Plateau, Hallelujah Junction 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
  CHSC66844  Berula erecta Vernon H. Oswald 1996-9-21 8285 Lassen Modoc Plateau. Ca. 3 mi W of Hwy. 139 on the road to Eagle Lake Biological Station, ca. 10 mi (air) N of Susanville. 1508 Comment
  CDA38212  Berula erecta T. C. Fuller 1963-7-15 10891 Lassen South of road to Pittsville, 5.4 miles northwest of Little Valley. 0 Comment
  CAS-BOT-BC169400  Betula glandulosa John Thomas Howell 1934-7-9 12514 Lassen Bridge Creek Spring Comment
  CAS-BOT-BC413001  Bistorta bistortoides A. A. Heller 1938-6-4 15141 Lassen 2 miles east of Westwood 1402 Comment
  CAS-BOT-BC127957  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC128034  Blepharipappus scaber John Thomas Howell 1976-7-20 52032 Lassen In dried depression. about 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC128044  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CAS-BOT-BC128046  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-25 3754 Lassen Susanville, on hills just west of town 1310 Comment
  CDA19752  Blepharipappus scaber D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  SFV3785  Blepharipappus scaber I. L. Wiggins, D. B. Wiggins 1961-6-11 16355 Lassen East of Eagle Lake, 2 miles north of Susanville. Roadside. 1340 Comment
  SJSU4600  Blepharipappus scaber J. W. Tilden 1958-6-27 1287 Lassen Madeline Comment
  UC194505  Blepharipappus scaber unknown 1878-4-1 Lassen Madeline Plains Comment
  UC773892  Blepharipappus scaber L. R. Short 1936-6-10 S- 415 Lassen Burgess Spr. Exp. Range 1798 Comment
  CAS-BOT-BC127952  Blepharipappus scaber Donald Myrick 1968-6-19 1958 Lassen On roadside along Highway #395, 23 miles south of Alturas. 1524 Comment
  CAS-BOT-BC128036  Blepharipappus scaber Lemmon April 18 188 s.n. Lassen Madaline plains Comment
  SEINET10945354  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2584 Lassen 6 mi. S of Adin; along CA Hwy. 139 right-of-way; in basalt-clay, grassy road bank; Artemisia-Juniper assoc. 1372 Comment
  UC1924569  Boechera Debra Valov 2006-5-30 2006041 Lassen Bieber off County Rd A2 c. 12 km east of Hwy 299 1285 Comment
  CHSC101060  Boechera puberula John Dittes 2008-5-22 1532 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 350 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, volcanic outcrop on northeast side of Willow Creek. 485 Comment
  CHSC75356  Boechera puberula Vernon H. Oswald 1999-5-7 9725 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  JEPS95056  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1997-5-27 8495 Lassen North of Susanville on Forest Route 38N04 (between Highway 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Highway 139. 1546 Comment
  SEINET12627116 Image available Boechera retrofracta Martin Schilling 2013-1 MS 257 Lassen Hat Creek overlook area, off Hwy 44, 2.86 air mi E of Sugarloaf Peak, 5 air mi NE of Hat Creek Hill, on W-facing slope, between rocks 1500 Comment
  UC1553390  Boechera retrofracta G. Schoolcraft 1988-6-20 1815 Lassen Ash Valley RNA, 16 mi west of Madeline, CA. 1584 Comment
  UC1609108  Boechera retrofracta Vernon H. Oswald and Lowell Ahart 1993-6-14 5512 Lassen ca 4 mi (air) w Eagle Lake (Lassen A1 (Eagle Lake Rd), 1.0 mi n of its jct with Lassen A21 (32N02), on the w edge of Brockman Flat Lava Beds); Brockman Flat Lava Beds 1810 Comment
  CAS-BOT-BC25705  Boechera sparsiflora John Thomas Howell; Gordon H. True 1973-7-31 50064 Lassen Sierra Nevada. Diamond Range. Road from Janesville to Thompson Peak. 1783 Comment
  CHSC29913  Boechera sparsiflora Robin L. Ondricek 1978-5-25 27 Lassen 1.3 mi N of Pine Creek Bridge on Co. Rd. 518. 1554 Comment
  CAS-BOT-BC25900  Boechera suffrutescens John Thomas Howell 1934-7-10 12537 Lassen Between Harvey Valley and Patterson Flats. Comment
  RSA32754  Boisduvalia macrantha A. A. Heller 1938-7-28 15295 Lassen About a mile east of Westwood 1524 Comment
  RSA339991  Boisduvalia stricta Noel Holmgren, Patricia K. Holmgren 1980-7-3 9492 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Hwy 395, 14.5 km (9 mi) airline distance southeast of Ravendale. 1700 Comment
  RSA166311  Boisduvalia stricta D. M. Moore 1960-6-4 123 Lassen U.S. 299, 6.5 mi. NE of McArthur Comment
  HSC16160  Brasenia schreberi Fred J. Kindel 1955-7-14 Lassen Mt. Meadows Reservoir Comment
  HSC103654  Brickellia californica Thomas W. Nelson, Jane Nelson 1985-8-10 8021 Lassen Along west side of Silver Lake. 1829 Comment
  SD197665  Brickellia microphylla G. K. Helmkamp 1990-9-23 B 15 Lassen Modoc Plateau: Susanville. 1189 Comment
  UC60846  Bromus M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mountains Comment
  RSA0065492  Bromus breviaristatus Marion P. Harthill 1971-6-21 208 Lassen Susanville. Comment
  CAS-BOT-BC149497  Bromus briziformis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Few miles north of Leitchfield in lava country. Comment
  CHSC36110  Bromus briziformis George Deniso 1978-7-28 25 Lassen Lower Dry Lakes - SE shore area of Upper lake ca 4.5 km D of Miners Point, Eagle Lake. 1645 Comment
  UCR119112  Bromus carinatus Beecher Crampton 1954-7-5 2055 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  CAS-BOT-BC149585  Bromus carinatus var. carinatus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville. Perkin's Ranch. 1463 Comment
  CDA31386  Bromus carinatus var. carinatus D. R. Hill 1968-7-8 Lassen James R. Reynolds ranch, Revendale. 0 Comment
  UCD32659  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD59217  Bromus carinatus var. marginatus L. Whitney 1935-6-19 3262 a Lassen Fruit Grower's Supply Company, Lassen National Forest. Comment
  CAS-BOT-BC155940  Bromus commutatus G. Schoolcraft 1986-6-17 1624 Lassen North side of Tuledad Canyon near Nevada state line. 1554 Comment
  JEPS109643  Bromus commutatus Dean W. Taylor 2002-6-21 18169 Lassen Elysian Valley (ca. 3 air miles West of Janesville), southerly middle border of the valley 1310 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
  UCD32667  Bromus commutatus Beecher Crampton 1954-7-5 2067 Lassen Lassen County, 5 miles west of Susanville. 1447 Comment
  UCD58463  Bromus commutatus L. D. Whitney 1935-6-23 s.n. Lassen Fruit Growers Supply Co., Camp #10. Comment
  CDA1829  Bromus japonicus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 0 Comment
  JEPS97404  Bromus japonicus Vernon H. Oswald and L. Ahart 1995-6-19 6874 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  UCD32672  Bromus japonicus Beecher Crampton 1954-7-6 2076 Lassen Lassen County, 15 miles south of Ravendale, along US highway 395. 1676 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
  CAS-BOT-BC162179  Bromus orcuttianus John Thomas Howell; Gordon H. True 1973-7-31 50029 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1737 Comment
  CAS-BOT-BC161576  Bromus suksdorfii Clare B. Hardham 1971-8-22 18407 Lassen Diamond Mountain. Comment
  CHSC44553  Bromus tectorum Lowell Ahart; John Thomas Howell 1974-7-9 520 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  CHSC91293  Bromus tectorum Lowell Ahart; John Dittes 2005-6-1 11909 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  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
  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
  JEPS88592  Callitriche verna Vernon H. Oswald and Lowell Ahart 1996-6-24 7870 Lassen 2.5 mi s Eagle Lake (and 0.5 mi e of Eagle Lake Rd (A1), along Papoose Creek where it leaves the n end of the meadow, Papoose Meadows); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  RSA233787  Callitriche verna R. F. Thorne, C. W. Tilforth 1969-9-5 39133 Lassen Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139. 1433 Comment
  UC1101514  Callitriche verna Verne Grant and Irving Schneider 1947-9-6 8385 Lassen creek midway between Eagle Lake and Susanville Comment
  CAS-BOT-BC80347  Calocedrus decurrens Ralph K. Gierisch 1968-7-12 3357 Lassen Lassen Forest, Hwy 36 1 mile east of Fredonyer Pass 1706 Comment
  NY18970  Calocedrus decurrens K. Morris 1973-5-25 226 Lassen This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA166662  Calochortus leichtlinii H. Dearing, M. Dearing 1938-7-1 2237 Lassen Top of pass west of Susanville 1763 Comment
  CHSC6271  Calochortus macrocarpus A. Santos 1946-7-5 Lassen East side of Eagle Lake. 1615 Comment
  UC119897  Calochortus macrocarpus T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CAS-BOT-BC483436  Calochortus macrocarpus Frances D. Payne 1955-7-1 s.n. Lassen Hayden Hill Comment
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Aug 2 2017
  CDA39286  Calochortus macrocarpus L. E. Wheeler 1967-7-25 s.n. Lassen H. Boswell property, Madelaine. 0 Comment
  RSA70366  Calochortus nudus Frank W. Peirson 1926-6-22 6821 Lassen Drakesbad, trail to Devils Kitchen, Lassen National Park. Comment
  CHSC30590  Calyptridium umbellatum Marc Held 1972-6-29 22 Lassen North end of Dean's Meadow. Comment
  HSC17647  Calyptridium umbellatum Fred J. Kindel 1955-6-8 Lassen Westwood Comment
  SEINET11931593  Calyptridium umbellatum Unknown 1978-1 5 Lassen Colman L., S of Eagle L 1963 Comment
  SEINET188321  Calyptridium umbellatum C. L. Hitchcock 1940-5-26 6608 Lassen Ca 12 mi N of Fall River Mills (Shasta Co) on Fall River 1372 Comment
  UC1123631  Calystegia occidentalis subsp. occidentalis A. Simontacchi 1940-6-30 901 Lassen 2.6 mi s Ladder Butte; Halls Flat, Lassen National Forest, Ladder Butte Comment
  SDSU5718  Calystegia occidentalis subsp. occidentalis D. F. Howe 1964-8-1 3915 Lassen Modock National Forest. 1829 Comment
  CHSC99737  Camassia quamash subsp. breviflora Lowell Ahart; John Dittes 2008-6-20 14905 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC843733  Camassia quamash subsp. breviflora A. A. Heller 1938-6-4 15140 Lassen 2 mi s of Westwood 1524 Comment
  CAS-BOT-BC497554  Camassia quamash subsp. breviflora Doris Kildale Gillespie 1930-5-13 9390 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC497556  Camassia quamash subsp. breviflora Ellsworth Bethel 1923-5-24 s.n. Lassen 12 miles from Poison Lake Comment
  HSC15435  Camassia quamash subsp. breviflora Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  JEPS61547  Camassia quamash subsp. quamash Leland S. Smith 1927-6-10 14 Lassen Lassen National Forest, Norvell Flat Norvell Flat; Lassen National Forest, Norvell Flat 1747 Comment
  JEPS109919  Camelina microcarpa D. W. Taylor 2007-6-14 20130 Lassen S end of Grasshopper Valley County Road 512 1 mile W of junction with Hwy 139. Comment
  OBI76938  Camelina microcarpa Anthony Baniaga 2011-6-10 321 Lassen Along hwy 395 ca. 6.6 mi S of Karlo Rd quad 1220 Comment
  NY661118  Camelina microcarpa G. Schoolcraft 2000-5-24 2896 Lassen Near Ducasse Reservoir south of Termo, CA. 1645.9 Comment
  RSA294814  Camissonia boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  SEINET3282785 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  RSA38439  Camissonia claviformis subsp. cruciformis P. A. Munz 1947-5-19 11873 Lassen 19 miles south of Ravendale. 1341 Comment
  NY851245  Camissonia claviformis var. cruciformis G. Schoolcraft 1989-5-16 1875 Lassen West of Highway 395 ca. 2 miles south of Karlo turnoff 1356 Comment
  CHSC93568  Camissonia contorta Lowell Ahart; John Dittes 2005-6-2 11939 Lassen Long Valley, along a poor dirt road, about 1 1/2 miles northeast of the Anderson Ranch home, about 6 miles (air) north of the interesection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1600 Comment
  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
  CDA37993  Camissonia parvula Vernon H. Oswald & Lowell Ahart 1998-6-4 9141 Lassen Red Rock Road, at its junction with Highway 395 south of Constantia. Comment
  NY852081  Camissonia tanacetifolia N. H. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Higwhay 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CAS-BOT-BC160875  Camissonia tanacetifolia subsp. tanacetifolia Noel H. Holmgren; Patricia K. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of US Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CAS-BOT-BC160864  Camissonia tanacetifolia subsp. tanacetifolia Ella D. Cantelow 1953-6-27 s.n. Lassen Secret Valley 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-BC282942  Canadanthus modestus B. Bartholomew; B. Anderson 1988-7-22 4499 Lassen Mosquito Creek ca 2 km SW of Patterson Meadow, S end of the Warner Mountains 2080 Comment
  CAS-BOT-BC37010  Capsella bursa-pastoris John Thomas Howell 1974-7-8 50514 Lassen Sierra Nevada. Susanville. 1295 Comment
  CHSC116087  Capsella bursa-pastoris Lowell Ahart; John Dittes 2015-7-13 20308 Lassen About 100 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  POM95249  Capsella bursa-pastoris Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC65094  Cardamine breweri var. breweri Vernon H. Oswald; Lowell Ahart 1995-7-24 7126 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21. In drainages. 1920 Comment
  UC1494954  Cardamine nuttallii Reed C. Rollins and Kathryn W. Rollins 1981-5-30 81166 Lassen Gold Run Road toward Sky Line Drive 10 mi s Susanville; s of Susanville Comment
  CDA3662  Cardaria chalepensis T. C. Fuller 1964-10-7 12695 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 1 mile southwest of Nubieber. 0 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
  JEPS120879  Carex Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18770 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC89753  Carex abrupta L. P. Janeway 2004-6-26 8170 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest. Roadside ditch. 1790 Comment
  SEINET13327167  Carex aquatilis var. aquatilis J. Atchley 1993-5-5 1 Lassen Along willow creek. 1219 Comment
  POM313130  Carex athrostachya H. L. Mason 1947-7-9 13300 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  CHSC114422  Carex davyi Don Lepley 2012-7-26 Lassen On the south flank of Whaleback Mt., about 3.5 air miles north-northwest of Christie Campground at Eagle Lake and about 500 feet from Road 32N02. UTM coordinates: 10T 68j0730 E x 4498190 N 1767 Comment
  CHSC76791  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. 1900 Comment
  SEINET10823330  Carex disperma Vernon H. Oswald, Lowell Ahart 1995-7-24 Oswald 7145 Lassen T31N, R7E, NW 1/4, NW 1/4, Sec 24. High Cascade Range, Red Fir Forest. Along Pine Creek on the upstream side of Forest Road 31N25, at the northwest corner of Upper Stephens Meadows, ca 3 miles north/northeast of Silver Lake, north of Lake Almanor. In wet soil of lodgepole Pine woods on a swampy meadow bordering the creek. 1905 Comment
  CHSC68770  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8502 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. 1546 Comment
  HSC48337  Carex douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19245 Lassen 2 mi. N of Westwood Comment
  HSC95229  Carex echinata subsp. echinata Gordon Leppig, Tony LaBanca 1997-6-28 517 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS94473  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1997-5-27 8510 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Highway 139 near Willow Creek Guard Station and Coyote Flat, on creek paralleling road on the north); Forest Route 38N04 1560 Comment
  SEINET7558601 Image available Carex filifolia var. erostrata Richard Driscoll 1965-5-31 s.n. Lassen Lassen. Bogard Ranger Sta., Harvey Valley, NW of Susanvile. 1707 Comment
  CAS-BOT-BC22350  Carex filifolia var. filifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49194 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CAS-BOT-BC21303  Carex fracta John Thomas Howell; Gordon H. True 1973-7-31 50047 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CAS-BOT-BC21304  Carex fracta John Thomas Howell; Gordon H. True 1973-8-1 50176 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  CAS-BOT-BC21305  Carex fracta John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49451 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC22237  Carex haydeniana John Thomas Howell 1934-6-14 12163 Lassen Near Lost Lake. Warner Mountains. 2438 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
  JEPS28382  Carex heteroneura George W. Gillett 1957-7-28 937 Lassen along s margin, Widow Lake Lassen Volcanic National Park, Widow Lake 2072 Comment
  HSC103667  Carex lemmonii Thomas W. Nelson, Jane Nelson 1985-8-10 8006 Lassen Along north side of Silver Lake 1829 Comment
  UC1594638  Carex lenticularis var. impressa Vernon H. Oswald and Lowell Ahart 1992-7-16 5115 Lassen swamp on creek w Cinder Pit (on logging road paralleling the e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, between Old Station and Susanville); Bridge Creek 1719 Comment
  CHSC66271  Carex nebrascensis Vernon H. Oswald; Lowell Ahart 1996-6-24 7882 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. Meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  CHSC85991  Carex nebrascensis L. P. Janeway 2003-7-24 7913 Lassen 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
  CAS-BOT-BC119714  Carex nervina Clare B. Hardham 1971-8-22 18405 Lassen Diamond Mountain. 2133 Comment
  CAS-BOT-BC119716  Carex nervina John Thomas Howell 1976-7-19 51989 Lassen On Gold Run Creek SW of Susanville. 1386 Comment
  SEINET7484007 Image available Carex pachycarpa W. W. Eggleston 1927-1 21485 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  CAS-BOT-BC119043  Carex pellita George Wilson Gillett 1957-7-26 906 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CHSC61593  Carex pellita Arthur C. Barrett 1915-8-18 36 Lassen Plumas National Forest. Along stream near Laufman Sta. 1508 Comment
  CHSC75552  Carex pellita Vernon H. Oswald; Lowell Ahart 1999-6-9 9738 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.3 mi west of Hwy. 395. 1353 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
  SEINET7570891 Image available Carex pellita L. P. Janeway 2003-7-24 7919 Lassen Swain Mountain 7.5' quad. High Cascade Range. 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
  UC2031883  Carex pellita Nick Otting 2003-7-16 691 Lassen Modoc Plateau, Smoke Creek, 14 air miles southeast of Ravendale. Comment
  CHSC108016  Carex praegracilis Lowell Ahart; John Dittes 2011-6-20 17477 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
  SEINET13694793  Carex praegracilis B. L. Wilson, P. Zika 2011-8-7 16802 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  SEINET7572132 Image available Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11864 Lassen On west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  CAS-BOT-BC118400  Carex praegracilis John Thomas Howell 1975-7-23 51407 Lassen Wet ground along Hwy 395 between Johnstonville and Jonesville 1280 Comment
  CAS-BOT-BC118615  Carex raynoldsii George Wilson Gillett 1957-7-29 948 Lassen Trail between Butte Lake and Snag Lake, 1/4 mi above Butte Lake. 1859 Comment
  HSC48222  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19175 Lassen Harvey Valley near Cone Springs Comment
  HSC48075  Carex simulata D. H. Norris, F. J. Hermann 1972-5-17 22630 Lassen Deep canyon 18 mi. N of Litchfield on Hwy. 395 (milepost 94.6) Comment
  SEINET13715331  Carex straminiformis G. Schoolcraft 1997-8-6 2669 Lassen Diamond Mountain, N slope 2317 Comment
  SEINET4170122  Carex subfusca Unknown 1966-6-24 Lassen Above Blue Lake, Warner Mountains, ca. 18 mi airline mi S. E. of Likely 1905 Comment
  SEINET7577217 Image available Carex subfusca George W. Gillett 1957-7-26 913 Lassen Lassen Volcanic National Park, Butte Lake. 1844 Comment
  HSC95278  Carex vesicaria Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 694 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC106687  Castilleja angustifolia Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and trail to Indian Springs. 1439 Comment
  UC1012186  Castilleja angustifolia Francis W. Pennell 1940-6-9 25760 Lassen 5 mi s Ravendale (Route 395) 1645 Comment
  UC585182  Castilleja angustifolia E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1741 Lassen above Red Rock 1432 Comment
  CAS-BOT-BC249612  Castilleja applegatei subsp. pinetorum M. S. Taylor; B. Hammond 1982-8-27 5052 Lassen Crystal Peak, Diamont Mts, ca. 6 air mi sw of Doyle 2377 Comment
  CAS-BOT-BC249617  Castilleja applegatei subsp. pinetorum Alice Eastwood; John Thomas Howell 1940-6-15 8326 Lassen Grasshopper Valley Comment
  CAS-BOT-BC249622  Castilleja applegatei subsp. pinetorum John Thomas Howell 1934-7-9 12527 Lassen Harvey Valley 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
  UC1609116  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1993-6-14 5525 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd (Lassen A1), at Sandy Beach, on the w shore of Eagle Lake, on the upper beach between the road and the lake); Eagle Lake 1566 Comment
  SBBG7046  Castilleja campestris H. and M. Dearing 1939-6-6 3565 Lassen marsh on Pitt River, Bieber Comment
  JEPS4548  Castilleja campestris subsp. campestris A. A. Heller 1938-6-23 15218 Lassen between Termo and Madeline (along U.S. Highway 395) 1615 Comment
  CHSC117210  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 20993 Lassen West of pond, 110 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
  CHSC4764  Castilleja lacera R. Carter 1967-7-16 623 Lassen Along side road. 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
  JEPS118272  Castilleja lacera Lowell Ahart, John Dittes 2011-6-20 17500 Lassen In ditch along the north side of the road, about 40 yards east of the stream about 40 yards east 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
  JEPS80676  Castilleja lacera L. R. Heckard with T. I. Chuang 1981-6-10 5528 Lassen 2.3 mi w Nubieber (along Route 299) 1341 Comment
  CHSC1714  Castilleja linariifolia 1944-7-5 Lassen Bogard. 1722 Comment
  CHSC4817  Castilleja linariifolia R. Carter 1967-7-16 617 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca 12 mi n of Susanville, on s side of rd. Comment
  JEPS126474  Castilleja linariifolia Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-8-10 CA 350 -067 Lassen North on 395, right on 502, right on 503 (Horn Road), right on Observation Peak Road. Comment
  CAS-BOT-BC244885  Castilleja miniata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49417 Lassen Elysian Valley, west of Janesville. Plants of the Sierra Nevada 1325 Comment
  CAS-BOT-BC244893  Castilleja miniata John Thomas Howell 1934-6-10 11871 Lassen Janesville Comment
  CAS-BOT-BC241001  Castilleja pilosa B. Bartholomew; B. Anderson 1988-6-25 4369 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  JEPS76162  Castilleja pilosa T. I. Chuang with Fei-Mei Chuang 1977-7-25 7661 Lassen 17.6 mi w Madeline 1600 Comment
  JEPS80677  Castilleja pilosa L. R. Heckard and T. I. Chuang 1981-6-10 5529 Lassen about 0.5 mi e Nubieber 1249 Comment
  SBBG7071  Castilleja pilosa H. and M. Dearing 1939-6-6 3566 Lassen Pitt River, near Bieber 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
  CHSC93238  Castilleja tenuis John Dittes; Scott Chamberlain 2004-6-28 1014 Lassen Modoc Plateau; Long Valley; ca. 2.2 air-miles northeast of Hwy 70 at Beckwourth Pass, ca. 3.0 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; meadow. 1445 Comment
  UC1063260  Castilleja tenuis A. Simontacchi 1940-6-5 812 Lassen 3.9 mi nw Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  UC1609352  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1993-6-14 5524 Lassen 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd (Lassen A1) at Sandy Beach on the w shore of Eagle Lake, between the road and the lake); Eagle Lake 1566 Comment
  SBBG128749  Castilleja tenuis L. Ahart, J. Dittes 2008-6-22 15027 Lassen a small natural drainage, ca. 20 yards W of the rd levee, open meadow area, in Big Valley, ca. 2.1 mi (air) NE of the Headqaurters at Ash Crk State Wildlife Area, ca. 5.0 mi (air) NE of Bieber 1262 Comment
  NY608460  Caulanthus major var. nevadensis N. H. Holmgren 1978-6-11 8923 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  NY608462  Caulanthus major var. nevadensis G. Schoolcraft 1982-7-6 758 Lassen Fort Sage Mountains 1981.2 Comment
  HSC42297  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen 4.5 mi W of Bieber along Hwy. 299 Comment
  JEPS118451  Ceanothus prostratus Lowell Ahart, John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  UC1281294  Ceanothus prostratus H. E. McMinn 1941-8-27 5400 Lassen 3.5 mi from Pine Cone Inn (5 mi from Newbieber [Neubieber?]); 5 mi from Neubeiber Comment
  SEINET5339354  Ceanothus prostratus W. Priest 1956-4-27 s.n. Lassen 2 miles north of Susanville on US 395 1524 Comment
  UCSB62941  Ceanothus velutinus Sarr, Dan 1995-7-29 Lassen N-side of Eagle Pass, 1 mi. below the summit 1900 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
  CDA7336  Centaurea squarrosa T. C. Fuller 1966-7-2 14961 Lassen 0.1 mile to 0.9 mile south of the bridge at Pittville. 0 Comment
  JEPS30734  Centaurea virgata subsp. squarrosa E. E. Fix 1960-9-21 Lassen Bieber, vic. of Comment
  RSA153397  Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley Comment
  RSA97606  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 s.n. Lassen Cramer Ranch, Big Valley Comment
  JEPS95910  Centromadia pungens subsp. pungens Lowell Ahart 1999-9-13 8224 Lassen on the north side of Mapes Road; about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  CAS-BOT-BC400183  Ceratophyllum demersum D. Toren; B. Trowbridge 1975-6-19 5183 Lassen Blue Lake 1828 Comment
  UC1523792  Cercis occidentalis Gary Schoolcraft 1981-6-9 447 Lassen w Nubieber 1280 Comment
  CHSC68761  Cercocarpus ledifolius var. intermontanus Vernon Oswald; Lowell Ahart 1997-5-27 8513 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 1.4 mi east of Hwy. 139. 1645 Comment
  UC773879  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
  CDA19743  Chaenactis douglasii D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Between Ravendale and Secret Valley. 0 Comment
  CAS-BOT-BC276615  Chaenactis douglasii var. douglasii Louella Bass 1973-6-14 104 Lassen Elysian Valley 1325 Comment
  HSC28855  Chaenactis douglasii var. douglasii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19288 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UCR7839  Chaenactis douglasii var. douglasii Marilyn Malin 1968-6-19 250 Lassen Eagle Lake Biological Station[Chico State Biological Station], 50 ft. NE of the A-Frame cabin 59 Comment
  UC585132  Chaenactis xantiana E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1770 Lassen sw facing slope of ridge above Red Rock 1524 Comment
  CDA41125  Chamaesaracha nana T. C. Fuller 1962-6-13 8997 b Lassen 0.5 mile south of Highway 36 to Chester, 2 miles west of Westwood. 0 Comment
  NY1001400  Chamaesyce maculata G. Schoolcraft 1998-9-17 2810 Lassen Susanville BLM office 1268 Comment
  CHSC113085  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2013-7-22 18857 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  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
  CHSC31977  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart; J. T. Howell 1974-7-9 532 Lassen Along edge of rd, 4 mi w of Susanville. 1584 Comment
  CHSC99743  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2008-6-20 14913 Lassen On the levee road and in vernal pools, 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
  CHSC6213  Cheilanthes gracillima P. Balch 1955-6-1 Lassen Silver Lake, Eagle Lake. 1981 Comment
  HSC991  Cheilanthes gracillima H. E. Parks, S. T. Parks Jun 1928 262 Lassen Mt. Lassen National Park, Drakesbad 2134 Comment
  JEPS121284  Chenopodium album Lowell Ahart 2013-7-22 18859 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
  CHSC105236  Chenopodium berlandieri Lowell Ahart; John Dittes 2010-7-31 17021 Lassen About 40 yards west of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CDA3039  Chenopodium botrys T. C. Fuller 1964-10-7 12693 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber. 0 Comment
  CAS-BOT-BC460932  Chenopodium hians John Thomas Howell 1934-7-8 12499 Lassen Spalding's, Eagle Lake Comment
  POM203791  Chenopodium pratericola J. T. Howell 1934-7-8 12499 Lassen Spalding s, Eagle Lake. Comment
  CAS-BOT-BC451357  Chimaphila menziesii Louella Bass 1978-6-15 78 -3 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC36325  Chrysolepis sempervirens George W. Gillett 1957-7-26 905 Lassen Point of rocks wets of Butte Lake outlet and above trail 1844 Comment
  SEINET8973626  Chrysolepis sempervirens W. Priest 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  CAS-BOT-BC140658  Chrysothamnus humilis John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50663 Lassen Summit ridge of Diamond Mt. 2346 Comment
  SEINET3392549  Chrysothamnus nauseosus subsp. hololeucus E. D. McArthur 1982-1 EDM- 1358 Lassen NW of Janesville @ jct of CO ros 205 & 219 Comment
  RSA3038  Chrysothamnus parryi subsp. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  CAS-BOT-BC100758  Chrysothamnus viscidiflorus subsp. puberulus P. Monnet 1913-7-1 792 Lassen Hot Spring Peak 1524 Comment
  CAS-BOT-BC105902  Chrysothamnus viscidiflorus subsp. viscidiflorus G. Schoolcraft 1987-9-9 1776 Lassen Ash Valley RNA just S. of T in road 1554 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
  JEPS21415  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-10-5 4664 Lassen Wendel Comment
  SEINET515878  Chrysothamnus viscidiflorus subsp. viscidiflorus Vernon H. Oswald 1998-9-8 9587 Lassen Kramer Rd. 3.1 mi S of Lookout. 1280 Comment
  SEINET7450943 Image available Chrysothamnus viscidiflorus subsp. viscidiflorus M. J. Williams 1974-7-29 1974 -L-56 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  RSA252470  Chrysothamnus viscidiflorus var. lanceolatus R. F. Thorne, C. W. Tilforth 1969-9-6 39267 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  SEINET10725178  Cichorium intybus Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 133 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 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
  CDA38210  Cicuta douglasii T. C. Fuller 1965-8-26 14041 Lassen North side of old highway to Johnstonville, 5 miles east of Susanville. 0 Comment
  CAS-BOT-BC184828  Cinna latifolia Clare B. Hardham 1971-8-22 18408 Lassen Diamond Mountain. 2133 Comment
  CAS-BOT-BC184829  Cinna latifolia John Thomas Howell; Gordon H. True 1973-8-1 50246 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  UCD59781  Cinna latifolia John Thomas Howell; G. H. True 1973-8-1 50346 Lassen Gold Run Creek road south of Susanville, Diamond Range. 1950 Comment
  CHSC23554  Cirsium andersonii W. O. Baum 1971-7-6 49 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC278010  Cirsium cymosum Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8596 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield 1386 Comment
  CAS-BOT-BC278003  Cirsium cymosum Mrs. H. C. Cantelow 1940-5-31 s.n. Lassen 5 miles east of McArthur, Hy. 299 Comment
  JEPS30611  Cirsium cymosum var. cymosum Peter H. Raven and Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  SEINET2050011 Image available Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  CAS-BOT-BC285579  Cirsium occidentale var. candidissimum John Thomas Howell 1934-7-11 12563 Lassen Eldridge, 10 miles se. of Fall River Mills Comment
  CDA1491  Cirsium ochrocentrum G. D. Barbe 1982-7-12 3878 Lassen Madeline Plain. 3 mi. north of Termo-Grasshopper Rd., on Westside Rd. at base of Dry Valley Ridge. 0 Comment
  CDA1526  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC280424  Cirsium ochrocentrum Lee E. Wheeler 1959-7-23 s.n. Lassen M. A. Mallory prop. Richmond Rd., ca. 4 mi SE/Susanville Comment
  CAS-BOT-BC280440  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CDA1520  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CDA1523  Cirsium ochrocentrum var. ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen Honey Lake; M.A. Mallory prop. Richmond Rd., about 4 mi. SE of Susanville. 0 Comment
  CHSC5203  Cirsium scariosum P. Balch 1955-7-19 Lassen Eagle Lake. Roadside meadow 3 1/2 mi from Antelope Lookout. 1981 Comment
  CDA36753  Cirsium scariosum D. B. Joley 1976-6-16 10 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  SBBG7961  Cirsium scariosum var. americanum H. and M. Dearing 1938-7-1 2242 Lassen W of Susanville Comment
  CDA1561  Cirsium scariosum var. americanum T. C. Fuller 1959-7-6 2979 -B Lassen Hwy. 36, about 1 mi. north of Westwood. (Probably in Sec. 4 or Sec. 5) 0 Comment
  OBI63042  Cirsium scariosum var. americanum David J. Keil, with Kathleen A. Keil et al. 2004-7-9 30305 Lassen Along California Route 44 east of Shasta County line, just west of junction with forest road 32N21 to Butte Lake. Lassen National Forest. 43 deg. 38.615'N x 121 deg. 18.370'W 1615 Comment
  CDA37717  Cirsium undulatum Breckenridge/Mitchell 2007-7-11 s.n. Lassen Madeline Plains, along Westside Road, from historic Basque homestead. 0 Comment
  CHSC7631  Cirsium vulgare Beverley J. Wise 1968-8-23 16 Lassen 10 mi. N.W. of Susanville on the Las. Co. Rd. 201. 1798 Comment
  CAS-BOT-BC169804  Cistanthe rosea H. D. Ripley; R. C. Barneby 1943-6-18 5464 Lassen Smoke Creek, NE of Viewland 1402 Comment
  JEPS107812  Clarkia lassenensis Lowell Ahart, John Dittes 2005-6-2 11951 Lassen Along a poor dirt road, about 1/2 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) northwest of the intersection of Scott Road and Highway 70, 6.6 miles (air) northwest of Hallelujah Junction 1512 Comment
  UCD55291  Clarkia lassenensis Ellen Dean; Gary Schoolcraft 2006-5-16 3112 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. 1274 Comment
  CAS-BOT-BC172562  Clarkia purpurea subsp. purpurea John Thomas Howell 1974-7-10 50550 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  CHSC66394  Clarkia rhomboidea Vernon H. Oswald; Lowell Ahart 1996-6-17 7780 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 between the trail and highway bridges spanning the Susan River. 1432 Comment
  UC1137738  Clarkia rhomboidea George A. Fischer, Irwin H. Johnson 1933-7-14 F 246 Lassen Lassen National Forest 1767 Comment
  CHSC106577  Claytonia rubra subsp. depressa C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  JEPS120869  Claytonia rubra subsp. depressa Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18742 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS118455  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2011-6-20 17486 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS126532  Claytonia rubra subsp. rubra Lowell Ahart, John Dittes 2016-6-7 21012 Lassen 5 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  UC1136746  Claytonia rubra subsp. rubra A. Simontacchi 1940-5-21 758 Lassen 4.1 mi sse Blacks Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  NY222746  Cleome platycarpa N. H. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  NY222826  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen East end of Skedaddle Mtns. near stateline. Comment
  NY222830  Cleome platycarpa G. H. True Jr. 1937-6-27 792 Lassen Near Skeedaddle. 1524.0 Comment
  UC1537370  Cleome platycarpa Gordon H. True Jr. 1937-6-27 792 Lassen near Skeedaddle 1524 Comment
  CAS-BOT-BC32956  Cleomella alata C. C. (Mrs.) Bruce 1898-6-1 2364 a Lassen Shumway 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
  SEINET5766959  Cleomella plocasperma A. Tiehm 1980-1 5746 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231 Comment
  UCD150400  Cleomella plocasperma Harry A. George and F. K. 1957-8-15 s.n. Lassen Honey Lake Wildlife Area, Dakin Unit. Comment
  SBBG66408  Collinsia childii E. Rockwell -Jun-1925 1023 Lassen Eagle Lake 1554 Comment
  JEPS23850  Collinsia parviflora Peter H. Raven, Otto T. Solbrig 1958-6-16 13249 Lassen 4.5 mi e Westwood (on St Hwy 36) Comment
  RSA0035917  Collinsia parviflora Lowell A. Ahart, John Dittes 2008-6-20 14916 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0117250  Collinsia parviflora L. Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, About 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1449 Comment
  UC1137686  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1737 Comment
  HSC63776  Collinsia parviflora Teresa Prendusi 1980-4-30 Lassen Shaffer Mtn., 2 mi. W of Hwy. 395 and 28 mi. S of Ravendale 1616 Comment
  SEINET10931315  Collinsia parviflora Katherine L. Morris 1973-5-25 Morris 240 Lassen Collected 7.6 mi nw of jct of hwy 36 & 44 on hwy 44 in an area of yellow pine And incense cedar; very moist area. Comment
  UC773850  Collinsia torreyi var. latifolia L. R. Short 1936-6-25 S 455 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1752 Comment
  UC1032607  Collinsia torreyi var. torreyi A. Simontacchi 1940-6-15 864 Lassen 1.6 mi ssw of Blacks Mountain (Lassen National Forest); Lassen National Forest 1920 Comment
  UC1187149  Collinsia torreyi var. wrightii Jean Langenheim 1957-6-26 4379 Lassen Northwest Said Valley, northeastern part of Lassen County Northwest Said Valley Comment
  CHSC23513  Collomia grandiflora Wayne O. Baum 1971-7-19 71 -77 Lassen E. slope of Gallatin Peak. 2042 Comment
  CHSC6198  Collomia grandiflora P. Collett 1946-6-24 Lassen Spalding's, Eagle Lake. 1554 Comment
  CHSC7767  Collomia grandiflora Beverley J. Wise 1969-6-1 75 Lassen N.E. city limits of Susanville, on Chestnut, at intersection with Hwy 139. 1310 Comment
  UC1123657  Collomia grandiflora A. Simontacchi 1940-7-1 895 Lassen 5.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1537483  Collomia grandiflora Gordon H. True Jr. 1938-7-9 906 Lassen near Horse Lake 1524 Comment
  JEPS94551  Collomia linearis Vernon Oswald and Lowell Ahart 1997-6-24 8621 Lassen 2.7 mi e of boundary of Lassen National Forest (s of Susanville on n side of Diamond Mountain at an impoundment on edge of Forest Rd 29N43 7.4 mi e of Gold Run Road (29N10)); Diamond Mountain, Forest Road 29N43 2036 Comment
  HSC30185  Collomia tinctoria D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19261 Lassen Harvey Valley near Cone Springs 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
  HSC95333  Comarum palustre Gordon Leppig, Tony LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  NY704016  Conringia orientalis N. H. Holmgren 1980-7-3 9471 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  SEINET7127328  Convolvulus arvensis M. J. Williams 1974-7-29 74 -L-57 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  UC1924220  Convolvulus arvensis Debra Valov 2004-6-8 2004255 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CAS-BOT-BC286115  Conyza canadensis Margaret Williams 1974-7-27 74 -L-44 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC1483855  Corallorhiza striata G. Schoolcraft 1980-7-15 309 Lassen w Bieber; Big Valley Mountain Timber Sale area 1798 Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  JEPS57534  Cordylanthus maritimus subsp. canescens Harry George 1963-8-15 Lassen shores of Honey Lake Comment
  POM43084  Cordylanthus tenuis subsp. tenuis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  UCD117317  Cornus sericea P. B. Schultz 1967-7-12 77 Lassen 14 miles southeast of Adin on State Highway 139. 1524 Comment
  JEPS88238  Cornus sericea subsp. sericea Vernon H. Oswald and Lowell Ahart 1996-6-17 7810 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36, at 6 mi. post e. of Devils Corral Trailhead); Modoc Plateau 1420 Comment
  NY500130  Corydalis aurea subsp. aurea N. H. Holmgren 1980-7-4 9516 Lassen Observation Peak, near top of Mountain, 17 km (10.5 miles) airline distance east of Ravendale 2420 Comment
  CAS-BOT-BC290390  Crepis acuminata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49462 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC27664  Crepis acuminata Robert A. Schlising 1978-7-15 3317 Lassen SE of Eagle Lake at Dry Lake. 1645 Comment
  CHSC83603  Crepis acuminata L. P. Janeway 2001-6-28 7234 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  CHSC93564  Crepis acuminata Lowell Ahart; John Dittes 2005-6-2 11933 Lassen Long Valley, along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, about 4 3/4 miles (air) north of the interesection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction. 1498 Comment
  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
  UC581214  Crepis acuminata E. B. Babcock and G. L. Stebbins Jr. 1936-6-7 1736 Lassen on mountain above Red Rock (e-facing slope of gully) 1420 Comment
  POM260004  Crepis acuminata C. L. Hitchcock 1940-5-26 6621 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  CHSC27597  Crepis bakeri N. E. Heiken 1978-6-28 58 Lassen E of Eagle L., at Lower Dry L. 1645 Comment
  CAS-BOT-BC291549  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-8 2222 Lassen Six miles south of Ravensdale 1676 Comment
  JEPS107848  Crepis intermedia Lowell Ahart, John Dittes 2005-6-1 11918 Lassen Long Valley, on the east side of a poor dirt road, about 4 1/2 miles (air) north of the interesection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  POM230909  Crepis intermedia G. Ledyard Stebbins, J. A. Jenkins 1937-7-10 2317 Lassen Black Mountain about a mile below the summit. 1951 Comment
  UC581219  Crepis intermedia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2316 Lassen sw-facing slope about a mi below summit; Black Mountain 1940 Comment
  CAS-BOT-BC290742  Crepis occidentalis subsp. costata G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-10 2320 Lassen Black Mountain about a mile below the summit 1940 Comment
  CAS-BOT-BC290752  Crepis occidentalis subsp. occidentalis John Thomas Howell 1934-6-10 11872 Lassen Janesville Comment
  UC581276  Crepis occidentalis subsp. occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-11 2320 Lassen w-facing slope about 1 mi below summit; Black Mt. 1940 Comment
  CHSC105239  Crepis occidentalis subsp. pumila Lowell Ahart; John Dittes 2010-7-31 16982 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
  UC1137698  Crepis occidentalis subsp. pumila A. Simontacchi 1940-6-11 845 Lassen 3.1 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  RSA716276  Crepis pleurocarpa L. Ahart, John Dittes 2005-6-2 11934 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
  SEINET3158253  Cressa cretica M. E. Jones 1897-6-23 sn Lassen Amedee 1219 Comment
  UC1483839  Crocidium multicaule G. Schoolcraft 1980-4-6 199 Lassen near base of Bass Hill (along Hwy 395, near city dump) 1280 Comment
  UCD59992  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  CAS-BOT-BC189240  Cryptantha John Thomas Howell 1977-6-22 52403 Lassen N end of Eagle Lake 1584 Comment
  CHSC23567  Cryptantha affinis W. O. Baum 1971-7-6 28 Lassen E slope of Gallatin Peak. 1950 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
  UC1137644  Cryptantha affinis A. Simontacchi 1940-5-28 776 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quad. 1767 Comment
  SDSU20524  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 524 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  SEINET10972821  Cryptantha ambigua Jeffrey Huber 1971-6-2 Huber 126 Lassen Approx. 30 mi N of Susanville, on CA Hwy 139, in basalt; Pinus-Artemesia-Juniper Assoc. 1646 Comment
  CHSC106681  Cryptantha circumscissa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 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
  JEPS94827  Cryptantha circumscissa Vernon H. Oswald and Lowell Ahart 1998-5-22 9135 Lassen 3.5 mi n of Doyle (Fort Sage Road 2.3 mi n of Hackstaff Road); Fort Sage Road 1341 Comment
  UC699733  Cryptantha circumscissa Farris Farris 1936-6-5 Lassen Airport, Susanville Susanville 1280 Comment
  CHSC75468  Cryptantha humilis Vernon H. Oswald; Lowell Ahart 1999-6-19 9743 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo. 1353 Comment
  GMDRC6449  Cryptantha humilis J. M. Andre, Glenn Clifton 1993-6-14 30004 Lassen northeast base of Shaffer Mtn near Secret Creek, about 20 miles ENE of Susanville 1646 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
  CHSC64870  Cryptantha intermedia Vernon H. Oswald; Lowell Ahart 1995-6-19 6878 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  SJSU11374  Cryptantha intermedia M. D. Fleschner 1965-7-13 Lassen by Hwy 139, 14 mi NE of Susanville 1828 Comment
  UC79293  Cryptantha simulans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CHSC65300  Cryptantha torreyana Vernon H. Oswald; Lowell Ahart 1995-8-14 7198 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) 4.7 mi W of Hwy. 395, N of Susanville. 1676 Comment
  JEPS90097  Cryptantha torreyana Dean Wm. Taylor with Robert A. Price 1988-6-4 9775 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. watershed, Fall R. Valley 1036 Comment
  POM72585  Cryptantha torreyana Marcus E. Jones 1897-6-25 7102 Lassen Susanville. 1341 Comment
  UC1587053  Cryptantha torreyana G. Schoolcraft 1991-7-30 2193 Lassen e side Widow Mountain 1889 Comment
  JEPS47106  Cuscuta californica Brown and Wieslander 1922-8-20 85 Lassen Martin Springs Eagle Lake Comment
  POM180742  Cycladenia humilis A. W. Kramer s.n. Lassen Prospect Peak, Lassen National Park Comment
  UC473500  Cycladenia humilis var. humilis A. N. Kramer 1930-1 15 Lassen Prospect Peak Lassen National Park Comment
  CHSC43469  Cynoglossum occidentale Lowell Ahart; John Thomas Howell 1974-7-9 515 Lassen Along the edge of Eagle Lake Road, about 5 miles north-west of Susanville. 1584 Comment
  UC1567429  Cyperus squarrosus G. Schoolcraft 1989-7-24 1994 Lassen along n. shore Said Valley Reservoir 1630 Comment
  CHSC23486  Cystopteris fragilis Wayne O. Baum 1971-6-28 71 -51 Lassen E. slope of Gallatin Peak. 2087 Comment
  SEINET6629019  Cystopteris fragilis M. J. Williams 1970-7-4 s.n. Lassen Ash Creek, SE of Adin 1280 Comment
  NY703182  Dalea ornata A. Tiehm 1984-6-7 8592 Lassen Flats on the northwest side of Shaffe Mountain, 7.5 air miles north-northwest of Litchfield 1372 Comment
  CHSC5924  Damasonium californicum P. Balch 1955-6-25 Lassen Pine Creek, Eagle Lake. 1584 Comment
  RSA8224  Damasonium californicum Elmer I. Applegate 1929-6-24 5882 Lassen Near Bieber. 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
  RSA245244  Damasonium californicum John Pratt 1970-6-21 33 Lassen [No locality information provided] Comment
  CAS-BOT-BC192328  Danthonia unispicata John Thomas Howell 1977-6-22 52406 Lassen West of Susanville near the confluence of Willard Creek and Susan River 1432 Comment
  CAS-BOT-BC192329  Danthonia unispicata Ralph K. Gierisch 1968-7-11 3353 Lassen Lassen National Forest. Harvey Valley - Dixie Spr. 1706 Comment
  CHSC66420  Danthonia unispicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7803 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  CAS-BOT-BC291778  Deinandra lobbii G. Schoolcraft 1989-7-24 1997 Lassen West of Hayden Hill Mine along road Comment
  CAS-BOT-BC291779  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  UC726248  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen flat along US Hwy 395 between Termo and Madeline 1524 Comment
  UC9127  Delphinium andersonii Mrs. C. C. Bruce June 1898 2238 Lassen Shumway Comment
  CHSC36435  Delphinium depauperatum Dave Leuck 1981-6-16 19 Lassen Meadow near turnoff to Caribou Wilderness Area on Hwy. 44. Comment
  CDA24233  Delphinium depauperatum T. C. Fuller 1963-6-1 10636 Lassen Road east to Willow Springs Campground, 1.9 miles east of Pittville-Susanville Road, 11.2 road miles south of Pittville. 0 Comment
  CAS-BOT-BC116054  Delphinium nuttallianum Elmer Ivan Applegate 1929-6-21 5780 Lassen Kelley's Camp, Warner Valley, Mt. Lassen region Comment
  CHSC67294  Delphinium nuttallianum James D. Jokerst 1991-5-29 3306 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  HSC27052  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19165 Lassen 3 mi. N of Westwood Comment
  POM100692  Delphinium nuttallianum Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  RSA716264  Delphinium nuttallianum L. Ahart 2005-6-2 11955 Lassen Along poor dirt road, 1 mile E of Anderson Ranch home, Long Valley, 4.5 miles air N of the intersection of Scott Road and Hwy 70, 6 miles NW of Hallelujah jct. 1426 Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  RSA0011561  Deschampsia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46991 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  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
  CAS-BOT-BC194257  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-9 12517 Lassen Bridges Creek Spring Comment
  JEPS28309  Deschampsia cespitosa subsp. cespitosa George W. Gillett 1957-8-9 1008 Lassen E. Fork of Hat Creek near Summit Lake Ranger Station; Lassen Volcanic Nat'l Park, E. Fork Hat Creek 2026 Comment
  UC1037093  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1934-7-15 2211 Lassen ca. 15 mi. w. Eagle lake (Crater Lake, Lassen Nat'l Forest); Lassen Nat'l Forest, Crater Lake 2133 Comment
  CAS-BOT-BC192743  Deschampsia danthonioides Lassen 1927 G. S. Crew 1927-7-15 52 Lassen Lassen National Forest 1737 Comment
  POM114878  Deschampsia danthonioides Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  UCD61402  Deschampsia danthonioides L. Whitney 1933-8-3 Lassen Near Slate Creek. 1889 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-BC201810  Deschampsia elongata Clare B. Hardham 1971-8-22 18377 Lassen Diamond Mountain 2133 Comment
  POM313167  Deschampsia elongata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  CAS-BOT-BC43105  Descurainia paradisa G. Schoolcraft 1998-6-9 2733 Lassen Lower slopes of Amedee Mountains. 1249 Comment
  UC1126907  Descurainia pinnata A. Simontacchi 1940-6-4 808 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1783 Comment
  RSA647568  Descurainia pinnata Marion P. Harthill 1971-6-21 228 Lassen Rovendale. Comment
  SEINET10480969  Descurainia pinnata Jeffrey Huber 1971-6-2 Huber 134 Lassen 6 mi n of halleluja jct on u.s. Hwy 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC43166  Descurainia pinnata subsp. brachycarpa Doris Kildale Gillespie 1930-5-12 9327 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CAS-BOT-BC43263  Descurainia pinnata subsp. glabra P. Monnet 1913-7-1 812 Lassen Hot Springs Peak. 2438 Comment
  CHSC92655  Descurainia pinnata subsp. halictorum L. P. Janeway 2005-7-4 8466 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  CHSC7705  Descurainia sophia Beverley J. Wise 1969-5-23 39 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  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
  RSA598803  Dichelostemma multiflorum Christopher Davidson 1975-6-4 2630 Lassen Highway 299, ca 5 miles east of MaArthur. 1136 Comment
  CAS-BOT-BC292258  Dieteria canescens Clare B. Hardham 1969-8-28 17430 Lassen West of Janesville Comment
  CHSC34409  Dieteria canescens Terrance Finn 1979-7-14 11 Lassen +/- .75 mi. from Hallelujah Junction, dirt road towards well. 1493 Comment
  JEPS40723  Dieteria canescens var. shastensis Duncan Dunning 1921-8-15 Lassen near Facht (railroad station) (sw of Westwood Junction); Robbers Creek Comment
  UC1609238  Dieteria canescens var. shastensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5596 Lassen Harvey Valley Rd. (33N02) 2.0 mi n Hwy 44 (between Grays Valley and Harvey Valley, e of Poison Lake) 1734 Comment
  CAS-BOT-BC153675  Diplacus mephiticus M. S. Baker; Frank Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  CHSC25121  Diplacus mephiticus William R. Lessig 1967-6-24 6 Lassen Collected ca. 200 yds. N. E. of Eagle Lake Biological Station. 1524 Comment
  SBBG66659  Diplacus mephiticus S. W. Hutchinson -Jun-1925 Lassen near Eagle Lake Comment
  CAS-BOT-BC154007  Diplacus torreyi A. M. Vollmer; L. Beane 1953-7-1 48 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC208723  Distichlis spicata C. S. Robinson 1928-9-18 119 Lassen Hanna Estate, Morgan Springs 1508 Comment
  UCD64624  Distichlis spicata var. stricta Verne Grant; Irving Schneider 1947-9-5 8377 Lassen Northwest shore of Eagle Lake by Sam Webb's place (Spaulding). Comment
  SACT001015  Distichlis spicata var. stricta Malcolm Nobs, S. Smith 1949-7-22 Lassen Both staminate and pistillate, forming a dense turf around high water mark, alkaline. Comment
  CAS-BOT-BC136179  Dodecatheon alpinum Wayne Roderick 1969-6-14 s.n. Lassen Creek above Blue Lake 1524 Comment
  CHSC61993  Dodecatheon alpinum Eenam Sin 1992-6-2 19 Lassen Murrer's Meadow. 1524 Comment
  CHSC7735  Dodecatheon alpinum Beverley J. Wise 1969-4-20 82 Lassen 14.7 mi. north of Susanville on Hwy 139. 1463 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
  UC1609465  Dodecatheon conjugens Vernon H. Oswald and Lowell Ahart 1993-5-12 5381 Lassen Forest Rd. 32N08 to Crater Lake 0.5 mi ne Hwy 44 (between A21 (to Westwood) and Poison Lake, edge of meadowy opening along creek); Pine Creek 1737 Comment
  CHSC29898  Dodecatheon jeffreyi Robin L. Ondricek 1978-7-7 92 Lassen Below the dam at Murrers Upper Meadow. 1548 Comment
  UC1137648  Dodecatheon pulchellum A. Simontacchi 1940-5-10 695 Lassen 4.4 mi sse of B.M. 7310 on Blacks Mtn; Lassen National Forest, Halls Flat Quad. Comment
  CHSC117297  Downingia bacigalupii Lowell Ahart; John Dittes 2016-7-13 21116 Lassen Strand of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC23439  Downingia bacigalupii K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5807 Lassen Drying vernal pool area, e side of Hwy. 139, ca. 2 mi s of Termo-Grasshopper Road and ca. 44 mi n of Susanville. Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 Comment
  RSA113687  Downingia bacigalupii H. K. Sharsmith 1955-6-27 4512 Lassen Adjacent to State Highway 299 near Fall River Mills, Lassen National Forest 1220 Comment
  RSA292990  Downingia bacigalupii Stanton A. Cook 1958-7-19 824 Lassen 7.4 miles N of Ravendale on route 395. Comment
  SEINET12329644  Downingia bacigalupii N. H. Holmgren, Holmgren, P. K. 1980-1 9472 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) W of US Highway 395 from a turnoff 10.3 km 1615 Comment
  UCD23274  Downingia bacigalupii Louis K. Mann, Pat Mann 1963-6-18 s.n. Lassen Road cut through sagebrush flat. 13 miles north of Susanville on road to Merrillville. Comment
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  JEPS114876  Downingia bicornuta var. bicornuta Lowell Ahart, John Dittes 2008-6-20 14945 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
  UC1037336  Downingia bicornuta var. bicornuta Leo Whitney 1933-8-20 1693 Lassen ca 25 mi w upper end of Eagle Lake (near Halls Flat); Lassen National Forest 1737 Comment
  UC803945  Downingia bicornuta var. bicornuta G. L. Stebbins Jr., P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4005 Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  UC1609096  Downingia cuspidata Vernon H. Oswald and Lowell Ahart 1993-7-8 5647 Lassen 0.4 mi n Hwy. 44 (Pittville Rd (Lassen 111, 36N01) near its intersection with 33N11, near se end of Poison Lake) 1709 Comment
  CHSC99496  Downingia laeta Lowell Ahart; John Dittes 2008-6-20 14928 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1951080  Draba verna Debra Valov 2009-4-24 2009011 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  CHSC108018  Draba verna var. aestivalis Lowell Ahart; John Dittes 2011-6-20 17489 Lassen About 3 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  HSC4391  Dysphania pumilio M. T. Milligan 1964-8-6 198 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS123970  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20296 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCR227661  Elatine californica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47212 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  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
  UC1101532  Elatine triandra Verne Grant and Irving Schneider 1947-8-1 8223 Lassen w end Section 19 (irrigation ditch running sw into State Fish and Game nesting area); Madelaine Plain Comment
  JEPS28330  Eleocharis acicularis George W. Gillett 1957-7-29 952 Lassen Snag Lake, shoreline near the E inlet Lassen Volcanic National Park 1850 Comment
  RSA0009565  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  CHSC77256  Eleocharis macrostachya G. Schoolcraft 1995-6-27 2499 Lassen Cherry Creek. 1524 Comment
  JEPS121268  Eleocharis macrostachya Lowell Ahart 2013-7-22 18848 Lassen W margin of duck field, about 30 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC112848  Eleocharis macrostachya R. K. Gierisch 1968-7-12 3359 Lassen Hwy 36, 1 mi E of Fredonyer Pass. 1706 Comment
  UCD54550  Eleocharis parvula Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2734 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
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Oct 5 2010
  UC1100132  Elodea nuttallii Herbert L. Mason and Verne Grant 1947-7-9 13292 Lassen 5 miles east of Bieber Comment
  UC506940  Elymus X saundersii George A. Fischer and Irwin H. Johnson 1933-7-12 F 233 Lassen Patterson Flat Lassn <National> Forest 1737 Comment
  HSC10975  Elymus caput-medusae T. F. Newman 1965-7-28 6540 Lassen N side of Skedaddle Mtn., E side of Wendel. Comment
  CHSC115611  Elymus cinereus Lowell Ahart; John Dittes 2015-7-14 20327 Lassen On the north side of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  HSC5270  Elymus cinereus M. T. Milligan 1964-8-6 197 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  JEPS123868  Elymus cinereus Lowell Ahart, John Dittes 2015-7-14 20327 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  SJSU15451  Elymus cinereus John Rawlings, Sara Timby 2014-6-15 1266 Lassen In and around BLM campground at north end of Eagle Lake. 1580 Comment
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Feb 18 2015
  UC1924248  Elymus elymoides Debra Valov 2004-6-9 2004264 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  UCD61535  Elymus elymoides L. D. Whitney 1935-6-25 Lassen Ashurst Mt. Comment
  UCD61621  Elymus elymoides R. Tofsrud 1947-7-1 217 Lassen East of Madeline. Comment
  SEINET10527886  Elymus elymoides Paul Gallian, David B. Dunn 1971-6-2 Gallian 515 Lassen 6 mi N of Hallelujah Jct on US hwy 395, in Artemesia tridentata, Jeffery pine, along high ridge & in sandy wash. 1402 Comment
  UC1024794  Elymus elymoides subsp. elymoides Leo Whitney 1933-7-15 2229 Lassen ca 25 mi w upper end of Eagle Lake; Lassen National Forest, Hall's Flat 1737 Comment
  HSC22391  Elymus elymoides var. californicus D. E. Anderson 1969-7-5 4996 Lassen Freedonyer Pass, 15 mi. W of Susanville 1752 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-BC206734  Elymus glaucus subsp. glaucus John Thomas Howell; Gordon H. True 1973-8-1 50179 Lassen Gold Run Creek south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  CAS-BOT-BC234092  Elymus multisetus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16343 Lassen Hillside 13.5 mi. E of Susanville Comment
  RSA795327  Elymus repens L. Ahart, John Dittes 2010-7-31 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1516 Comment
  UCD62565  Elymus repens J. V. Langdon 1957-7-1 Lassen Susanville. Comment
  JEPS127708  Elymus spicatus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -161 Lassen Juniper Ridge Road, before split with Juniper Tree Road. Population North of road. Comment
  JEPS127709  Elymus spicatus Alejandro Brambila, Michael Dolan 2016-7-13 CA 320 -163 Lassen Cold Springs Road North of Bryn Marr Ranch. Comment
  UC1024916  Elymus trachycaulus Leo Whitney 1935-6-29 3362 Lassen Bieber Comment
  UC1037145  Elymus trachycaulus Leo Whitney 1935-6-24 3306 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  CAS-BOT-BC204360  Elymus trachycaulus subsp. trachycaulus J. Burtt Davy 1897-6-17 s.n. Lassen Honey Lake Valley Comment
  CHSC105211  Elymus trachycaulus subsp. trachycaulus Lowell Ahart; John Dittes 2010-7-19 17017 Lassen On the south side of the road, about 20 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
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Oct 5 2019
  CHSC29894  Elymus trachycaulus subsp. trachycaulus Robin L. Ondricek 1978-8-2 113 Lassen North edge of dam at Murrers Upper Meadow. 1548 Comment
  UCD62694  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1932-7-1 Lassen Lassen National Forest. Bogard Ranger Station. Comment
  GMDRC7737  Elymus triticoides J. M. Andre, G. Clifton 1993-6-1 33414 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  UCR7840  Elymus virescens Marilyn Malin 1968-6-21 249 Lassen Above Pine Creek Fish Hatchery on the NW side of Eagle Lake. Comment
  CAS-BOT-BC81878  Ephedra viridis M. Bourell 1997-5-31 5882 Lassen Wendel Road 10.9 miles southeast of Highway 395 Comment
  CHSC71123  Ephedra viridis Vernon H. Oswald; Lowell Ahart 1998-5-22 9103 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
  JEPS94703  Ephedra viridis Vernon H. Oswald and Lowell Ahart 1998-5-22 9103 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
  UC281  Ephedra viridis J. Burtt Davy Jun 17 1897-Jun 24 1897 3342 Lassen Honey Lake Valley Honey Lake Valley (on slopes of lava hills) Comment
  CHSC113058  Epilobium brachycarpum Lowell Ahart; John Dittes 2013-7-22 18845 Lassen West margin of a duck field, about 10 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS117496  Epilobium brachycarpum Lowell Ahart, John Dittes 2010-7-31 17005 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  SEINET12539614  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  UC1122562  Epilobium brachycarpum A. Simontacchi 1940-6-13 852 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1537612  Epilobium brachycarpum Gordon H. True Jr. 1936-6-26 550 Lassen head of creek 2 mi e Eagle Lake; Willow Creek 1584 Comment
  HSC22866  Epilobium brachycarpum John Pratt 1970-6-14 17 Lassen Comment
  CHSC113081  Epilobium campestre Lowell Ahart; John Dittes 2013-7-22 18850 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA0105583  Epilobium campestre Lowell Ahart, John Dittes 2013-7-22 18850 Lassen About 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC303060  Epilobium canum subsp. latifolium Pearl Safford 111 Lassen Susanville [uncertain locality] Comment
  CHSC29945  Epilobium ciliatum subsp. ciliatum Robin L. Ondricek 1978-8-6 115 Lassen Below dam at Murrers Upper Meadow. 1548 Comment
  POM46399  Epilobium ciliatum subsp. ciliatum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC66251  Epilobium hallianum Vernon H. Oswald; Lowell Ahart 1996-6-24 7849 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  SEINET3271523 Image available Epilobium oregonense Marcus E. Jones 1897-6-30 Lassen 4 mi below Eagle Lake 1524 Comment
  UC1609446  Epilobium pallidum Vernon H. Oswald and Lowell Ahart 1993-7-8 5673 Lassen Halls Flat Rd (33N18) 1.4 mi ssw Pittville Rd (Lassen 111, 36N01) (ca 5.4 air mi nw of Poison Lake, bed of vernal pool on e side of rd) 1694 Comment
  UC725478  Epilobium pallidum A. A. Heller 1938-7-28 15295 Lassen meadow edge of a swamp about 2 mi e Westwood 1524 Comment
  SD219071  Epilobium pygmaeum R. F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395, ca. 5.0 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC117524  Epilobium torreyi Lowell Ahart; John Dittes 2016-7-13 21126 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 Bieber, 7.3 miless (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  SEINET10530259  Equisetum laevigatum Jeffrey Huber 1971-6-11 Huber 318 Lassen 3 mi E of Westwood, on CA Hwy 36; in volcanic soils (basalt), in Pinus jeffreyi. 1608 Comment
  CHSC76105  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-9-13 8229 Lassen Along the north side of Mapes Road, about 200 yards east of Lambert Lane, about 3 1/2 miles (air) southeast of Standish. 1210 Comment
  CAS-BOT-BC213625  Eragrostis mexicana subsp. virescens John Thomas Howell; G. H. True 1973-7-31 50145 Lassen Susanville 1295 Comment
  SBBG69966  Eremogone congesta S. W. Hutchinson -Jun-1925 69 Lassen Eagle Lake 1554 Comment
  CHSC87106  Eremogone congesta var. congesta L. P. Janeway 2001-6-20 7191 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  CHSC5228  Eremogone congesta var. simulans J. B. Kimsey 1946-6-17 Lassen Mt. Fredonyer. 2421 Comment
  CAS-BOT-BC174264  Eremogone congesta var. simulans Walter Knight; Irja Knight; James Vale; Keith Wagnon 1981-5-24 4120 Lassen Between Adin and Willow Creek Comment
  RSA0057704  Eremogone congesta var. subcongesta Barbara Ertter 1987-6-16 7193 Lassen Skeedaddle Mountains on NE side of Honey Lake; saddle on E side of Hot Springs Peak. 2195 Comment
  CHSC27718  Eremothera boothii subsp. alyssoides Robert A. Schlising 1978-7-2 3308 Lassen SE of Horse Lake, 15.5 mi SW of jct Hwy 395 and Horse L. Road, along the latter. 1545 Comment
  JEPS29748  Eremothera boothii subsp. alyssoides Rimo Bacigalupi and L. R. Heckard 1962-5-28 8502 A Lassen 2 mi e Wendel Junction (n of Honey Lake, on road from US 395 past Flanagan to Pyramid Lake NV) 1219 Comment
  UC1483875  Eremothera boothii subsp. alyssoides G. Schoolcraft 1980-5-16 234 Lassen on Wendell Hwy n kiln 1280 Comment
  CAS-BOT-BC160008  Eremothera boothii subsp. boothii Louella Bass 1978-6-21 s.n. Lassen East side of Honey Lake Valley near Wendel Comment
  UC526132  Eriastrum signatum John Thomas Howell 1934-6-10 11840 Lassen near Plumas Junction Comment
  CAS-BOT-BC515170  Eriastrum signatum Alice Eastwood; John Thomas Howell 1940-6-16 8331 Lassen Near Susanville Comment
  NY1012936  Eriastrum sparsiflorum var. wilcoxii G. Schoolcraft 1985-7-29 1492 Lassen West slopes of Fort Sage Mountains 1585 Comment
  JEPS14040  Eriastrum wilcoxii Rimo Bacigalupi with G. T. Robbins 1955-7-21 5418 Lassen along Smoke Creek rd. 6.8 mi e U.S. Highway 395 (s edge of valley); Secret Valley Comment
  UC133905  Eriastrum wilcoxii T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  UC23553  Eriastrum wilcoxii M. S. Baker and Frank Nutting 1892-7-2 Lassen s side Dixey Mts. 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
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  RSA79228  Ericameria bloomeri E. K. Balls, Percy C. Everett 1952-10-9 18134 Lassen About Plumas-Lassen county line, Hwy. 89, east of Lake Almanor. 1220 Comment
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Jul 1 2013
  SEINET5741365 Image available Ericameria bloomeri Lowell E. Urbatsch, Vensa Karaman 2000-1 7714 Lassen Collected along Forest Road 37N11, off of CA 139. 1220 Comment
  CAS-BOT-BC287478  Ericameria greenei Ralph K. Gierisch 1968-7-11 3348 Lassen Harvey Valley, Lassen Forest 1676 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-BC298179  Ericameria nauseosa var. oreophila John Thomas Howell 1924-8-13 s.n. Lassen Near Doyle Comment
  CHSC65293  Ericameria nauseosa var. oreophila Vernon H. Oswald; Lowell Ahart 1995-8-14 7181 Lassen Modoc Plateau. Hwy. 395 9.1 mi N of Smoke Creek Ranch Rd., N of Susanville. Along this section of highway. 1359 Comment
  UC527343  Ericameria nauseosa var. oreophila C. B. Wolf 1931-9-4 Lassen 2.6 mi from Bieber (on the road to Alturas); Big Valley 1267 Comment
  HSC68556  Ericameria nauseosa var. speciosa Gary Schoolcraft 1980-8-10 359 Lassen Along Post Camp Rd. N of Shinn Peaks 1890 Comment
  JEPS21518  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UC217104  Ericameria nauseosa var. speciosa H. M. Hall 1921-9-11 11679 Lassen near Lassen; Honey Lake Valley 1219 Comment
  UC773959  Ericameria nauseosa var. speciosa L. R. Short 1936-9-14 S- 503 Lassen Burgess Spring Experiment Range Lassen Forest 1761 Comment
  UC1776655  Ericameria parryi var. nevadensis G. Schoolcraft 1998-8-19 2803 Lassen N upper slope of Shaffer Mountain 1981 Comment
  UC527350  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 Lassen 0.5 mi from Janesville (on the road to Wendel, w edge of Honey Lake Valley); Honey Lake Valley 1280 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
  CAS-BOT-BC33472  Erigeron barbellulatus Milo Samuel Baker; Franklin P. Nutting 1895-7-30 s.n. Lassen Silver Lake Comment
  RSA713118  Erigeron bloomeri L. P. Janeway, B. Castro 2005-7-10 8486 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains overlooking the NW end of Honey Lake, more or less at the north end of Stony Ridge. 1993 Comment
  SEINET240401  Erigeron bloomeri S. L. Welsh, ND Atwood 2001-6-14 28153 Lassen E of Hwy 395, rd to Rams Horn Spring campground 1539 Comment
  CAS-BOT-BC294488  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-7-8 12513 Lassen Harvey Valley Comment
  CAS-BOT-BC294489  Erigeron bloomeri var. bloomeri Ralph K. Gierisch 1968-7-11 3343 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  CAS-BOT-BC294492  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-6-10 11867 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  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
  JEPS114758  Erigeron bloomeri var. bloomeri Lowell Ahart, John Dittes 2008-6-19 14894 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  JEPS89691  Erigeron bloomeri var. bloomeri Dean W. Taylor 1974-6-14 3719 Lassen Janesville Grade Road at summit 4 mi ssw of Janesville (Plumas National Forest); Northern Sierra Nevada, Plumas National Forest 1706 Comment
  RSA636042  Erigeron bloomeri var. bloomeri Michael A. Vincent 1999-6-9 8583 b Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  UC584273  Erigeron compositus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2286 Lassen s of Janesville (summit Thompson Peak); Thompson Peak 2346 Comment
  CAS-BOT-BC297145  Erigeron concinnus var. concinnus Roxana S. Ferris; Rena Duthie 1919-6-13 19 Lassen Madeline Comment
  CAS-BOT-BC297196  Erigeron coulteri Clare B. Hardham 1971-8-22 18398 Lassen Diamond Mountain 2133 Comment
  CAS-BOT-BC295979  Erigeron divergens Clare B. Hardham 1969-8-28 17421 Lassen West of Janesville, Sierra Nevada Comment
  CHSC105252  Erigeron divergens Lowell Ahart; John Dittes 2010-7-31 17004 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  JEPS127714  Erigeron divergens Alejandro Brambila, Michael Dolan 2016-7-20 CA 320 -169 Lassen Railroad trail north of Tule Mountain. Collection is North of gate on Modoc-Lassen county line. Comment
  JEPS84932  Erigeron divergens Barbara Ertter 1987-7-24 7303 Lassen ca .75 mi ene Beckwourth Pass (at end of old crumbling paved road) 1524 Comment
  CAS-BOT-BC295978  Erigeron divergens Gary Schoolcraft 1984-9-4 1372 Lassen Fredomyer Mtn. 1737 Comment
  CHSC60716  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1993-6-14 5515 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
  CHSC68734  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1997-5-27 8520 Lassen North of Susanville of Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 3.3 mi northeast of Hwy. 139. 1725 Comment
  JEPS87524  Erigeron eatonii var. plantagineus Vernon H. Oswald and Lowell Ahart 1993-6-14 5505 Lassen Lassen A21 (32N02) 2.1 mi e Lassen 105 (32N28Y) (se side of valley, ca 8 air mi w of Eagle Lake); Pine Creek Valley 1728 Comment
  UC1136837  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  CHSC64838  Erigeron elegantulus Vernon H. Oswald 1995-6-26 6945 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
  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
  CHSC72297  Erigeron filifolius L. P. Janeway; Glenn Clifton 1998-7-9 5739 Lassen About 4.8 mi south of Doyle; east scarp of Diamond Mountains overlooking Omira; along Road 24N01X 0.8 mi from Constantia Road. 1417 Comment
  POM36253  Erigeron filifolius Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CHSC93249  Erigeron filifolius var. filifolius John Dittes; Scott Chamberlain 2004-6-28 1016 Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-mile east of Plumas County line; near meadow edge. 1511 Comment
  JEPS109853  Erigeron inornatus var. calidipetris Dean W. Taylor 2006-6-29 19558 Lassen vicinity Long Lake; Highway 44 at the junction of County Road A21, southwest quadrant, near the junction with Forest Road 31N89 1737 Comment
  UC1523776  Erigeron inornatus var. inornatus Gary Schoolcraft 1981-7-21 529 Lassen about 2 mi along main road, se of Little Valley P.O. 1280 Comment
  HSC42422  Erigeron inornatus var. inornatus Barbara Kelly 1977-8-8 547 Lassen Ash Creek Campground Comment
  UC584244  Erigeron lassenianus var. lassenianus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2264 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties) Comment
  CAS-BOT-BC295505  Erigeron linearis John Thomas Howell 1934-6-14 12137 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC68844  Erigeron linearis Vernon H. Oswald; Lowell Ahart 1997-6-24 8608 Lassen South of Susanville on the north side of Diamond Mtn. at slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. At roadside. 1889 Comment
  UCR7844  Erigeron philadelphicus Marilyn Malin 1968-6-27 255 Lassen Spring fed roadbank on E side of Rd 425, c. 1 mi north of Gallatin Beach Picnic area, SW side of Eagle Lake. 1570 Comment
  SJSU6631  Erigeron philadelphicus var. philadelphicus H. L. Buckalew 1961-7-9 Lassen spring by Blue Lake, Warner Mountains 1920 Comment
  JEPS114759  Erigeron pumilus subsp. intermedius Lowell Ahart, John Dittes 2008-6-19 14867 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
  POM261457  Erigeron pumilus subsp. intermedius Alice Eastwood, John Thomas Howell 1940-6-15 8312 Lassen Upper Willow Creek east of Hayden Hill Comment
  CHSC93688  Erigeron pumilus var. intermedius Lowell Ahart; John Dittes 2005-6-1 11853 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
  UC1609097  Erigeron pumilus var. intermedius Vernon H. Oswald and Lowell Ahart 1993-6-28 5578 Lassen Harvey Valley Rd (33N02) 0.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1749 Comment
  SEINET530700  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  SEINET530701  Eriogonum baileyi var. baileyi Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  SJSU13947  Eriogonum baileyi var. baileyi N. A. Hopkins 1986-8-28 1380 Lassen County Rd 33 (Scott Rd), lower Long Valley N of Hwy &0 & E of Beckwourth Pass Comment
  CAS-BOT-BC241567  Eriogonum baileyi var. baileyi John Thomas Howell; G. H. True 1973-7-31 50144 Lassen Janesville 1295 Comment
  POM253244  Eriogonum caespitosum A. A. Heller 1938-6-23 15216 Lassen Grassy, gravelly slope between Secret Valley and Ravendale, on U.S. Highway 395 1524 Comment
  NY242505  Eriogonum collinum J. L. Reveal 1971-6-22 2463 Lassen Along U.S. Highway 395, 4.5 miles south of Ravendale. Comment
  NY242507  Eriogonum collinum R. F. Hoover 1940-9-29 4645 Lassen Between Shaffer Mountain and Warren Peak, in low pass. Comment
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Jul 1 2013
  RSA176183  Eriogonum collinum Noel Holmgren, James L. Reveal 1964-8-22 1723 Lassen 48 miles northeast of Susanville, 4 miles south of Ravendale Comment
  RSA238630  Eriogonum collinum James L. Reveal 1971-6-22 2463 Lassen Along Hwy 395, 4.5 miles south of Ravendale Comment
  RSA338584  Eriogonum collinum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9485 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UC1537297  Eriogonum collinum Gordon H. True 1937-7-10 784 Lassen Bull Flat, Refuge 1Q 1493 Comment
  CHSC23494  Eriogonum douglasii var. meridionale K. R. Stern 1974-6-26 5866 Lassen E end of Champs Flat. Comment
  UC85900  Eriogonum douglasii var. meridionale T. S. Brandegee 1872-1 Lassen Susanville Comment
  UCSC005349  Eriogonum elatum Randall Morgan 1998-7-20 3319 Lassen Hwy 144 west of Susanville Comment
  RSA766386  Eriogonum eximium Susan Hutchinson 1929-12 857 Lassen Desert slope of Sierra Nevada, Lassen. 1220 Comment
  CDA22616  Eriogonum maculatum T. C. Fuller 1980-8-6 20322 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
  CHSC64805  Eriogonum maculatum Vernon H. Oswald 1995-6-7 6833 Lassen Wendel Rd. (Lassen 320) at milepost 9.5, 4.1 mi e of Wendel, ne of Susanville. 1231 Comment
  NY281810  Eriogonum maculatum N. H. Holmgren 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395. Comment
  NY430489  Eriogonum marifolium G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mountain 2316.5 Comment
  OBI76908  Eriogonum marifolium Anthony Baniaga 2011-7-9 438 Lassen Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE 1723 Comment
  RSA518445  Eriogonum microtheca var. ambiguum George K. Helmkamp 1990-9-23 D- 9 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 Comment
  RSA78919  Eriogonum microtheca var. ambiguum E. K. Balls, Percy C. Everett 1952-10-10 18143 Lassen 8 mi. SE of Ravendale, Hwy 395, Susanville to Alturas. 1280 Comment
  CAS-BOT-BC268689  Eriogonum microthecum var. laxiflorum Ynez Whilton Winblad 1935-9-29 s.n. Lassen Horse Lake Comment
  NY803457  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-21 2945 Lassen Slopes below McKessick Peak ca. 10 miles southeast of Milford, CA-nwse 1504 Comment
  CAS-BOT-BC261446  Eriogonum nudum var. nudum Mike Vasey 1990-6-30 9056 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  CAS-BOT-BC269826  Eriogonum nudum var. pubiflorum John Thomas Howell 1934-7-8 12498 Lassen Spalding's, Eagle Lake Comment
  JEPS126464  Eriogonum nudum var. pubiflorum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-27 CA 350 -070 Lassen North on Highway 139 to Antelope Grade. Comment
  UC1032332  Eriogonum nudum var. pubiflorum A. Simontacchi 1940-7-2 931 Lassen 6. 2 mi ene Ebey Lake; Lssen National Forest, Halls Flar Quadrangle Comment
  UC1137675  Eriogonum nudum var. pubiflorum George A. Fischer, Irwin H. Johnson 1933-7-14 F 258 Lassen Lassen National Forest 1783 Comment
  HSC68914  Eriogonum nudum var. pubiflorum Gary Schoolcraft 1979-7-3 117 Lassen 1.0 mi. NW of rest area on Hwy. 395 1570 Comment
  CAS-BOT-BC266813  Eriogonum nummulare John Thomas Howell 1951-8-20 28228 Lassen Honey Lake Valley near Hurlong 1280 Comment
  NY281931  Eriogonum ochrocephalum var. ochrocephalum N. H. Holmgren 1970-6-25 4378 Lassen North end of Peterson Mountain, near US 395, 8 miles north of junction with Calif. 70 (Hallelujah Junction). 1524.0 Comment
  RSA0020051  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen National Forest. NW of intersection of 29N02Y and the ''B'' spur. 1630 Comment
  UC1483820  Eriogonum prociduum G. Schoolcraft 1980-7-14 308 Lassen w Madeline (Ash Valley); Ash Valley 1548 Comment
  UC85955  Eriogonum pusillum T. S. Brandegee 1892-6-24 Lassen Honey Lake Comment
  CAS-BOT-BC272626  Eriogonum spergulinum var. reddingianum John Thomas Howell 1934-7-6 12446 Lassen Harvey Valley 2438 Comment
  JEPS94560  Eriogonum spergulinum var. reddingianum Vernon Oswald and Lowell Ahart 1997-6-24 8596 Lassen s of Susanville (on the 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
  UC412800  Eriogonum spergulinum var. reddingianum Franklin P. Nutting Lassen Pine Creek 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
  CAS-BOT-BC272624  Eriogonum spergulinum var. reddingianum John Thomas Howell 1974-7-9 50490 Lassen NW. of Wildcat Point, Eagle Lake Comment
  NY283102  Eriogonum sphaerocephalum G. Schoolcraft 1982-7-6 765 Lassen Fort Sage Mountains 1950.7 Comment
  POM165475  Eriogonum sphaerocephalum Geo. D. Butler 1910-5-20 1371 Lassen Dry rocky hill, Yreka. Comment
Read comments
Apr 25 2013
  CHSC87118  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7200 Lassen Modoc Plateau. Along '22' Road about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  RSA700235  Eriogonum sphaerocephalum var. halimioides L. P. Janeway 2001-6-20 7200 Lassen Modoc Plateau. Along '22' Rd. about 1.8 km west of Black Hole, about 11.9 km north-northeast of Harvey Mountain. 1500 Comment
  SEINET530720  Eriogonum sphaerocephalum var. halimioides Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  SEINET530721  Eriogonum sphaerocephalum var. halimioides Paul Opler 2006-6-9 Lassen Ash Valley Rd., 5.9 mi E of Adin. 1423 Comment
  CAS-BOT-BC262738  Eriogonum sphaerocephalum var. sphaerocephalum A. R. Kruckeberg 1954-6-22 3323 Lassen Between Susanville and Janesville on Highway 395 Comment
  CAS-BOT-BC262739  Eriogonum sphaerocephalum var. sphaerocephalum H. D. Ripley; R. C. Barneby 1943-6-13 5710 Lassen South of Johnstonville 1325 Comment
  NY283175  Eriogonum strictum subsp. proliferum W. W. Eggleston 1911-7-7 7173 Lassen Secret Valley 1330 Comment
  CHSC13455  Eriogonum strictum var. anserinum J. Pitts 1972-6-22 248 Lassen 70 yds. n of Eagle Lake Biology Station. Comment
  CHSC71247  Eriogonum strictum var. anserinum Vernon H. Oswald; Lowell Ahart 1998-6-4 9147 Lassen Spur road on north side of Red Rock Rd. 0.6 mi east of Hwy. 395, south of Constantia. 1389 Comment
  JEPS56423  Eriogonum strictum var. anserinum Dr. Longbridge 1912-1 Lassen e Amedee Comment
  CHSC25912  Eriogonum strictum var. proliferum K. R. Stern 1967-7-1 2435 Lassen California State Hwy. 139, 14 mi. N of Susanville. Comment
  SBBG1643  Eriogonum umbellatum H. and M. Dearing 1938-6-30 2235 Lassen 20 mi N of Susanville [Hwy 44] Comment
  JEPS94469  Eriogonum umbellatum var. modocense Vernon Oswald and Lowell Ahart 1997-6-24 8640 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
  UC725728  Eriogonum umbellatum var. modocense A. A. Heller 1938-6-23 15202 Lassen w Susanville Comment
  CHSC106592  Eriogonum umbellatum var. nevadense C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  POM105088  Eriogonum umbellatum var. nevadense Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UC55391  Eriogonum umbellatum var. nevadense J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley, Long Valley Comment
  RSA221784  Eriogonum umbellatum var. polyanthum Noel Holmgren, J. J. Fay, B. L. Bethers 1970-6-25 4375 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  UC6403  Eriogonum ursinum M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  CHSC12488  Eriogonum vimineum Carol Weld 1969-6-25 29 Lassen Murrer's Meadow. 1524 Comment
  UC1258486  Eriogonum vimineum G. Schoolcraft 1979-6-19 78 B Lassen Painter's Flat 1719 Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  UC423672  Eriogonum vimineum David D. Keck 1930-7-23 951 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  CAS-BOT-BC300947  Eriophyllum lanatum B. J. Hammerly 1941-6-20 43 Lassen 8 mi. S.-E. of Likely on Blue Lake road 1676 Comment
  RSA647564  Eriophyllum lanatum Marion P. Harthill 1971-6-20 205 Lassen Susanville Comment
  CAS-BOT-BC308135  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11896 Lassen Horse Lake Comment
  JEPS126470  Eriophyllum lanatum var. achilleoides Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-14 CA 350 -046 Lassen Drive North on Horse Lake Road. Comment
  POM253262  Eriophyllum lanatum var. achilleoides A. A. Heller 1938-6-23 15197 Lassen Ridge east of Fredonyer Pass on Highway 36 1646 Comment
  UC1136991  Eriophyllum lanatum var. achilleoides L. R. Short and J. Warren 1936-6-29 S 459 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1822 Comment
  UCR18727  Eriophyllum lanatum var. grandiflorum Frank C. Vasek 1975-7-11 750711- 06 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  CAS-BOT-BC301531  Eriophyllum lanatum var. integrifolium Louella Bass 1983-6-10 8 -83 Lassen Lassen College Campus, Susanville Comment
  PASA2212  Eriophyllum lanatum var. integrifolium Frank W. Peirson 1926-6-24 Lassen Several miles southward from the Madeline Plain Comment
  POM66743  Eriophyllum lanatum var. integrifolium Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 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
  CHSC112978  Eryngium alismifolium Lowell Ahart; John Dittes 2013-7-22 18879 Lassen Drainage filled with dirt from construction of a pond, 40 yards south of the man made pond, about 110 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS97782  Eryngium alismifolium Annetta M. Carter 1945-9-30 1716 Lassen W side of Eagle Lake. About 3 mi. S of Spaldings where road crosses bridge over dry creek. Comment
  UCD80866  Eryngium mathiasiae Robert E. Preston 2007-7-8 2569 Lassen Big Valley Mtns, 0.4 mi NE of Big Valley Summit, along Hwy 299. 1396 Comment
  UC1584017  Erysimum capitatum G. Schoolcraft 1990-5-15 2047 Lassen about 4 mi s Nubeiber; John's Valley area 1310 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
  CHSC7754  Erythranthe guttata Beverly J. Wise 1968-8-28 108 Lassen Edge of Crazy Harry Creek where crossed by Las. Co. Rd. 230, 6 mi. north of Hwy 36. 1645 Comment
  RSA0049634  Erythranthe inflatula Dean Wm. Taylor 2012-6-6 21224 Lassen Moll Reservoir (ca.10 air miles E of Adin), west side of the reservoir 1603 Comment
  CHSC30559  Erythranthe primuloides Sori H. Shad 1970-6-25 11 Lassen At Deans Meadow. 1828 Comment
  CHSC37357  Erythranthe primuloides NE Heiken 1978-7-5 73 Lassen S of Eagle L., E shore of Mahogany L. 2060 Comment
  CHSC7770  Eschscholzia californica Beverley J. Wise 1969-5-17 72 Lassen City limits of Susanville on Hwy 139. 1310 Comment
  CAS-BOT-BC403151  Eschscholzia californica Ira L. Wiggins; Dorothy B. Wiggins 1961-6-16 165311 Lassen Along Highway 299, overlooking Big Valley 1249 Comment
  JEPS127177  Eschscholzia californica subsp. californica Lowell Ahart, John Dittes 2016-7-15 21228 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  UC1562582  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ca 10 airmi due s of, (ridge of Diamond Mts ca 1.5 mi e of Diamond Peak) Susanville; Diamond Mts. 2255 Comment
  SFV1478  Euclidium syriacum B. J. McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 miles west of its junction with Bassett Road (about 2 miles south of U. S. Highway 299 and 4 miles southwest of Adin). 1280 Comment
  SEINET9594781  Euphorbia crenulata D. W. Taylor 2012-7-18 21273 Lassen Along Hwy 44, pumice flat nestled in the cones ca 2 miles S of the S end of Poison Lke. 1783 Comment
  UCD142769  Euphorbia serpillifolia R. N. Raynor 1938-7-16 s.n. Lassen Honey Lake Valley. Comment
  SD112378  Eurybia integrifolia Darley F. Howe 1964-8-2 3919 Lassen East Creek, Warner Mountains, Modoc National Forest. 2010 Comment
  JEPS31932  Eurybia radulina Duncan Dunning 1921-8-15 Lassen near, sw of Westwood Junction Facht; Robbers Creek Comment
  SEINET8687854 Image available Euthamia occidentalis L. Kerr, A. Rossman, T. Sparer 2012-10-31 NV 030 -858 Lassen Head north on I-580/US 395 past Reno. Right onto Red Rock Road. Go for about one mile and park on right side of road. Hike about 300 feet west down to creek and collection area on irght side of road. 1362 Comment
  CAS-BOT-BC278434  Festuca idahoensis John Thomas Howell 1976-7-20 52006 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC278436  Festuca idahoensis John Thomas Howell 1934-7-7 12471 Lassen Pine Creek Flat Comment
  CHSC42184  Festuca idahoensis C. E. Laver 1985-8-12 Lassen Ca. 8.5 mi se of Madeline and 9 mi ne of Termo. 2194 Comment
  CHSC60867  Festuca idahoensis Vernon H. Oswald; Lowell Ahart 1993-6-28 5585 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. In a meadow. 1731 Comment
  POM203057  Festuca idahoensis J. T. Howell 1934-7-6 12430 Lassen Hall's Flat. Comment
  RSA0092308  Festuca idahoensis Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31434 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
  UC1024834  Festuca idahoensis Leo Whitney 1935-6-11 3224 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1776694  Festuca idahoensis G. Schoolcraft 1994-7-7 2374 Lassen About 1.5 mile NW of Boot Lake 2407 Comment
  UC1523731  Fraxinus latifolia Gary Schoolcraft 1981-7-14 508 Lassen s of Pittville; Beaver Creek Area 1158 Comment
  CHSC117272  Galium aparine Lowell Ahart; John Dittes 2016-7-15 21223 Lassen About 400 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA647556  Galium aparine Marion P. Harthill 1972-6-16 s.n. Lassen Doyle. Comment
  HSC63933  Galium bifolium Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak 2195 Comment
  CHSC93556  Galium boreale subsp. septentrionale Lowell Ahart; John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1410 Comment
  POM68457  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 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
  JEPS121280  Galium trifidum subsp. columbianum Lowell Ahart, John Dittes 2013-7-23 18895 Lassen Along S margin of the levee road, about 150 yards E of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD55278  Gayophytum diffusum Ellen Dean 2006-5-15 3093 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1245 Comment
  HSC87162  Gayophytum diffusum J. D. Prouty 1978-6-27 1 Lassen E of Eagle Lake, Black Mt. Rd., SE of Eagle Lake Field Station 1616 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
  POM204159  Gayophytum ramosissimum J. T. Howell 1934-6-10 11843 Lassen Near Plumas Junction Comment
  SEINET10491752  Gayophytum ramosissimum Paul Gallian, David B. Dunn 1971-6-2 Gallian 468 Lassen 6 mi n of hallelujah jct on us hwy 395 in artemisia tridenta, pinyon pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  SEINET10936377  Gayophytum ramosissimum David B. Dunn, Jeffrey Huber 1971-6-2 Dunn 17752 Lassen 3 mi s of hallelujah jct on us hwy 395 & calif 70; along roadside and in artemesia-grassland field. Comment
  CHSC66725  Gentiana calycosa Vernon H. Oswald; Lowell Ahart 1996-8-1 8119 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood 1737 Comment
  CHSC59088  Gentianopsis simplex Vernon H. Oswald; Lowell Ahart 1992-8-25 5186 Lassen Lassen Volcanic National Park. Grassy Creek on the S end of Snag Lake. 1851 Comment
  UC1037286  Gentianopsis simplex Leo Whitney 1934-7-26 1705 Lassen ca. 7 - 8 mi. s.w. Eagle Lake (Bridge Creek Camp near Bridge Creek); Lassen Nat'l Forest, Bridge Creek Camp 1737 Comment
  SEINET6702766  Geum macrophyllum var. perincisum G. Schoolcraft 1994-8-2 2393 Lassen About 2 miles northwest of Boot Lake 2438 Comment
  JEPS114756  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
  UC1136907  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  CHSC48846  Geum triflorum var. ciliatum Vernon Oswald 1986-5-28 2066 Lassen Hwy 139 between Eagle Lake and Adin, 49.0 mi n of Susanville. 1630 Comment
  RSA91465  Gilia brecciarum Verne Grant 1955-6-8 9669 Lassen 3.6 mi n of Halleluja Jct. on hwy 395. 1311 Comment
  CHSC64798  Gilia inconspicua Vernon H. Oswald 1995-5-24 6768 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. Flat bordering the road. 1219 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
  JEPS94902  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-6-4 9146 Lassen s of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); n side of Red Rock Road 1389 Comment
  CHSC11771  Gilia modocensis Wayne O. Baum 1971-6-28 71 -4 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC48652  Gilia modocensis Vernon Oswald 1986-5-28 2078 Lassen Rd. 201 on the w side of Eagle Lake, 28.7 mi n of Hwy 36, 6.8 mi sw of Hwy 139. 1584 Comment
  CHSC93696  Gilia modocensis Lowell Ahart; John Dittes 2005-6-2 11989 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  RSA104286  Gilia modocensis Verne Grant, Alva Grant 1956-5-17 9796 Lassen Just south of Secret Valley, north of Litchfield, along Hwy. 395. 1311 Comment
  CHSC93697  Gilia ochroleuca Lowell Ahart; John Dittes 2005-6-2 11990 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  RSA28121  Gilia salticola Elmer I. Applegate 1934-5-4 8914 Lassen South end of Secret Valley Comment
  SBBG52268  Gilia sinuata C. Davidson 1975-6-7 2756 Lassen 1 mi E of Beckwourth Pass on Hwy 70 Comment
  HSC95215  Glyceria borealis Gordon Leppig 1998-7-13 974 Lassen Modoc Natl. Forest, Blue Lake Ranch 1970 Comment
  OBI77053  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  CHSC77264  Glyceria elata G. Schoolcraft 1997-7-30 2614 Lassen W facing slope of Diamond Mtn. 1950 Comment
  CHSC64755  Glyptopleura marginata Vernon H. Oswald 1995-5-24 6782 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the east side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  CAS-BOT-BC302595  Gnaphalium palustre John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49494 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS127281  Gnaphalium palustre Lowell Ahart, John Dittes 2016-7-13 21108 Lassen 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. Comment
  POM38258  Gnaphalium palustre Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  UC1136436  Grayia spinosa E. Sawyer 1935-6-27 226 Lassen Long Valley Sierraville Quad., Long Valley Comment
  CHSC37692  Grindelia squarrosa M. S. Taylor 1982-8-19 5024 Lassen E side of Hwy 395, ca. 4 mi n of its jct with Hwy 70 at Hallelujah Jct. 1493 Comment
  UC1776686  Grindelia squarrosa var. serrulata G. Schoolcraft 1999-8-23 2880 Lassen Near turnoff to Janesville along Hwy 395 1280 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
  HSC69598  Hackelia californica Gary Schoolcraft 1980-7-15 310 Lassen W of Biebes 1799 Comment
  CHSC98245  Hackelia cusickii Allison Sanger 2003-6-25 Lassen Near Road 33N13 in Halls Flat, approximately 8 air miles east-northeast of Old Station. 1706 Comment
  UC1560393  Hackelia cusickii E. Joyal and D. Mehlman 1988-6-29 1296 Lassen Old Blue Lake Road w of present day road Old Blue Lake Road; Warner Mountains 1800 Comment
  UC24814  Hackelia cusickii M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mountains Comment
  JEPS67931  Hackelia micrantha Jos. Grinnell 1928-6-29 Lassen Butte Lake 1889 Comment
  UCD98889  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  UCD98902  Halogeton glomeratus R. Tofsrud; J. M. Tucker 1950-7-26 1978 Lassen Herlong Army Ordnance Depot, southeastern Lassen County. Comment
  SBBG8396  Helianthella californica H. and M. Dearing 1938-7-1 2246 Lassen near Westwood Comment
  HSC5786  Helianthus annuus R. G. Means 1962-7-4 65 Lassen 10 mi. N of Doyle, Hwy. 395 1220 Comment
  UC727121  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen along Hwy 395 on ridge n Mapes Comment
  CAS-BOT-BC305665  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen On the grade east of Mapes on U. S. Highway #395 1371 Comment
  SEINET3871713  Heliotropium curassavicum Richard R. Halse 2010-8-25 8086 Lassen Along State Hwy. 139 ca 26/2 miles N of Susanville on the NE shore of Eagle Lake.; 0 1559 Comment
  UC1776662  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  CHSC68750  Hesperochiron californicus Vernon H. Oswald; Lowell Ahart 1997-5-27 8525 Lassen Coyote Flat on Forest Route 38N04 4.7 mi northeast of Hwy. 139. 1798 Comment
  UC1069087  Hesperochiron californicus A. Simontacchi 1940-5-17 740 Lassen 5.9 mi. s. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  HSC63725  Hesperochiron californicus Teresa Prendusi 1980-4-29 Lassen Five Springs Mtn. 1402 Comment
  CHSC61155  Hesperochiron pumilus Vernon H. Oswald; Lowell Ahart 1993-5-12 5382 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 ( to Westwood) and Poison Lake, on the edge of a large meadowy opening covered with sagebrush scrub along Pine Creek. 1737 Comment
  SEINET5499822  Hesperochiron pumilus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  RSA59814  Hesperochiron pumilus E. K. Balls 1950-5-19 14770 Lassen Above Ash Creek Public Camp, off rd. from Adin to Madeline. 1616 Comment
  NY1002355  Hesperolinon micranthum J. T. Howell 1934-6-10 11887 Lassen 12 miles north of Susanville, on road to Horse Lake Comment
  RSA795326  Hesperolinon micranthum L. Ahart, John Dittes 2010-7-31 16975 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  UC1924195  Hesperolinon micranthum Debra Valov 2005-8-20 2005235 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 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
  CAS-BOT-BC280679  Hesperostipa comata Margaret Williams; Steven Williams 1974-7-26 74 -L-43 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UCD85294  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an sagebrush flat, along US Hwy 395, 1 mile east of Johnstonville. Comment
  POM34557  Heterotheca villosa var. minor F. H. Hillman 1897-7-12 s.n. Lassen Chat Comment
  NY783486  Heuchera rubescens G. Schoolcraft 1979-6-21 82 Lassen Wendel Canyon 1585.0 Comment
  CAS-BOT-BC312416  Hieracium albiflorum George W. Gillett 1957-7-24 895 Lassen Between Cameron Meadow and Snag Lake 1950 Comment
  CAS-BOT-BC315994  Hieracium nudicaule A. A. Heller 1938-7-28 15301 Lassen Edge of a swamp about a mile east of Westwood 1524 Comment
  CDA7975  Hieracium scouleri T. C. Fuller 1963-7-15 12904 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  UC1069611  Hieracium scouleri A. Simontacchi 1940-7-2 937 Lassen 6.3 mi ene Ebey Lake; Lassen National Forest, Halls Flat Quad. 1950 Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  HSC13458  Hippuris vulgaris Fred J. Kindel 1955-6-27 Lassen Mt. Meadows Reservoir. Comment
  JEPS124840 Image available Hippuris vulgaris B. Corwin 1964-6-30 119 Lassen 16 miles north of Susanville. Comment
  OBI75895  Holodiscus discolor var. glabrescens Anthony Baniaga 2011-8-17 506 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1850 Comment
  UCD170233  Holodiscus discolor var. glabrescens K. M. Meyer; A. Townesmith 2007-7-23 150 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
  CAS-BOT-BC150128  Holodiscus microphyllus var. glabrescens P. Monnet 1913-7-4 802 Lassen Hot Springs Peak Comment
  UCD85366  Hordeum brachyantherum subsp. brachyantherum Beecher Crampton 1954-7-5 2060 Lassen Hwy 36, 4.5 miles west of Susanville. 1432 Comment
  CAS-BOT-BC284715  Hordeum jubatum John Thomas Howell 1976-7-20 52034 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  UC38637  Hordeum jubatum J. Burtt Davy Jun 17 1897-Jun 24 1897 3299 Lassen Honey Lake Valley Comment
  UCD85755  Hordeum jubatum August L. Hormay 1932-8-12 s.n. Lassen Lassen National Forest. South E edge of Eagle Lake. Comment
  UCD85769  Hordeum jubatum R. Tofsrud 1947-7-1 226 Lassen Between Johnstonville and Standish. 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
  CAS-BOT-BC157367  Horkelia fusca Clare B. Hardham 1961-6-17 7503 Lassen Baxter Creek south of Susanville Comment
  RSA0092310  Horkelia fusca Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31431 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  SEINET10483366  Horkelia fusca subsp. pseudocapitata Taylor 1982-7-8 Taylor 4789 Lassen T23N R17E sw sec 28. Beckwourth Pass quad. ALong spur rd ca. 1/3 mi w of Scott Rd, ca. 1.5 mi ne of Beckwourth Pass, ca. 30 mi n of Reno. 4800 ft. Sagebrush Scrub. 1463 Comment
  CAS-BOT-BC536179  Horkelia fusca var. parviflora M. S. Taylor; B. Hammond 1982-7-8 4789 Lassen Along spur road ca. 1/3 mile west of Scott Road, ca. 1.5 miles NE of Beckwourth Pass 1463 Comment
  HSC25727  Horkelia fusca var. tenella D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19181 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC537967  Horkelia tridentata var. flavescens C. L. Hitchcock 1940-5-26 6597 Lassen Ca. 12 miles north of Fall River Mills. (Shasta Co.) on Fall River 1371 Comment
  SEINET5342517  Hornungia procumbens N. H. Holmgren, P. K. Holmgren 1978-6-11 8907 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CHSC66387  Hosackia oblongifolia var. oblongifolia Vernon H. Oswald; Lowell Ahart 1996-6-17 7818 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of a marshy pool at the 6.0 mile post of Devils Corral Trailhead. 1420 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
  UC1951069  Hydrophyllum capitatum var. alpinum Debra Valov 2009-4-27 2009023 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  UCD133302  Hymenoxys lemmonii J. E. Stuart Date Unknown 2154 Lassen 8 miles south of Constantia, Reno Highway. Comment
  JEPS88401  Hypericum formosum var. scouleri Vernon H. Oswald and Lowell Ahart 1996-8-1 8127 Lassen ca. 2 mi. n. Dyer Mt. Lookout (Forest Rd. 28N56 (D-Line), on downhill side of rd., s.-s.w. of Westwood) 1737 Comment
  HSC93315  Hypericum scouleri Vernon H. Oswald, L. Ahart 1996-8-1 8127 Lassen FS Rd. 28N56 (D-line), 2 mi. N of Dyer Mtn. Lookout, SSW of Westwood 1738 Comment
  CAS-BOT-BC88621  Idahoa scapigera Doris Kildale Gillespie 1930-5-12 9338 Lassen 2 miles north of Susanville on road to Alturas. Comment
  CHSC7707  Idahoa scapigera Beverley J. Wise 1969-4-10 37 Lassen 1.5 mi. north on Hwy 139. 1341 Comment
  JEPS128412  Iliamna bakeri Jennifer Mueller 2017-8-15 CA 370 -262 Lassen Below Tuledad VAlley Ranch take the access road into the Cottonwood Mountain towards the Dodge Fire. Comment
  HSC82266  Ipomopsis congesta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5991 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  UCR183236  Ipomopsis depressa Jim Andre, G. L. Clifton 1993-6-2 7719 Lassen Honey Lake, Honey Lake Valley, along Smoke Creek Valley Road, c. 10 mi west of the Nevada border, near Herlong Siding, south of Skedaddle Mtns 1243 Comment
  JEPS118488  Iris hartwegii subsp. hartwegii Lowell Ahart, John Dittes 2011-6-21 17524 -A Lassen 335 feet northwest of Big Valley Canal, 2.1 miles (air) south of County Road 87, 6.6 miles (air) northeast of Bieber, 7.9 miles (air) west by southwest of Adin, Big Valley 1264 Comment
  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
  CHSC4936  Iris missouriensis A. E. Anderson 1967-5-24 33 Lassen In Murrer's Upper Meadow, 4 mi. se Eagle Lake Biological Sta. 1554 Comment
  UCD138823  Iris tenuissima Michael A. Vincent 1999-6-9 8586 Lassen Along US Rt. 44, ca. 1 mile west of Viola, 13 miles east of Shingletown. 1524 Comment
  CHSC25745  Iris tenuissima subsp. purdyiformis John Steiner 1977-6-14 74 Lassen Lassen Volcanic National Park. 250 m ne Manzanita Lake, 250 m e park boundary. 1768 Comment
  UC2013402  Isatis tinctoria Debra Valov 2012-6-19 1116 Lassen Just S of junction of Co. Road 87 A at Co. Road 87. Comment
  CHSC35570  Ivesia paniculata Barbara Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 miles west of Madeline. Comment
  CHSC63416  Ivesia paniculata V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6352 Lassen Ash Valley Research Natural Area along a 'road' leading south from the right-angle turn on Lassen 527 at the gravel pit, between Adin and Madeline. 1554 Comment
  NY436061  Ivesia paniculata T. W. Nelson 1980-7-6 5984 Lassen Ash Valley along Adin-Madeline Rd., 16 miles E of Adin. 1554.5 Comment
  UC1100958  Juncus balticus Herbert L. Mason and Verne Grant 1947-7-9 13297 Lassen 5 mi e Bieber Comment
  UCD141331  Juncus balticus subsp. ater John Thomas Howell 1959-9-23 34881 A Lassen North end of Juniper Lake. 2057 Comment
  SEINET3877716  Juncus bufonius Arnold Tiehm, Jan Nachlinger; Gary Schoolcraft 1984-6-25 8824 Lassen Rodeo Flat, 2.7 road miles west of the state line on Buckhorn road from Ravendale to Highway 81.; 0 1829 Comment
  UC1567409  Juncus bufonius G. Schoolcraft 1989-7-18 1981 Lassen near Bucks Spring (s of Clarks Valley Road) 1874 Comment
  CDA36732  Juncus bufonius var. occidentalis Barbara L. Wilson, Peter Zika 2011-8-7 16809 Lassen Highway 44 near mile post 12.50, at junction with road 32N22 and road to Harney Valley where route A21 crosses the railroad tracks north of Westwood. Comment
  CHSC108000  Juncus hemiendytus var. hemiendytus Lowell Ahart; John Dittes 2011-6-20 17480 Lassen About 15 yards west of the stream, about 40 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC68886  Juncus hemiendytus var. hemiendytus Vernon Oswald; Lowell Ahart 1997-6-24 8653 Lassen South of Susanville just south of the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. Meadow. 2249 Comment
  HSC97877  Juncus hemiendytus var. hemiendytus Vernon H. Oswald, L. Ahart 1996-6-24 7852 Lassen Papoose Meadows, 0.5 mi. E of Eagle Lake Rd. (A1), 2.5 mi. S of Eagle Lake, Modoc Plateau 1634 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
  UC1543894  Juncus luciensis John Thomas Howell and Louella Bass 1974-7-10 50538 Lassen Elysian Valley Sierra Nevada 1325 Comment
  POM111108  Juncus mexicanus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CDA33205  Juncus nevadensis Gordon Leppig 1998-6-12 933 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC29855  Juncus nevadensis Kyle Brown 1978-7-10 95 Lassen In meadow at the base of the dam in Murrers Upper Meadow. 1548 Comment
  CHSC96731  Juncus nevadensis Gordon Leppig 1998-7-12 946 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow a complex. 1970 Comment
  HSC95328  Juncus nevadensis Gordon Leppig 1998-7-12 946 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS87450  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  UC1133741  Juncus nevadensis A. Simontacchi 1940-6-7 894 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC1609497  Juncus nevadensis Vernon H. Oswald and Lowell Ahart 1993-8-3 5745 Lassen ca. 13 (air) mi. n. Lake Almanor (s.w. edge of Cooper Swamp located e. of Silver Lake just e. of Caribou Wilderness); Cooper Swamp 1932 Comment
  SEINET3881686  Juncus sphaerocarpus Alice Eastwood, John Thomas Howell 1940-6-16 8339 Lassen Janesville.; 0 Comment
  CHSC87114  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  RSA0035254  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, Cascade Range Highlands. 1730 Comment
  SBBG126190  Juncus trilocularis P. F. Zika 2008-7-14 23893 Lassen S side of St Hwy 44, SE end of Grays Valley near Lodgepole 1730 Comment
  UCD133784  Juniperus occidentalis K. M. Meyer; A. Townesmith 2007-7-19 132 Lassen Lassen National Forest. Ca. 0.2 mile on 29N03, off Hwy 36 on pullout just past a dry creek. 1459 Comment
  UCD22742  Juniperus occidentalis Todd Sloat 1988-6-4 16 Lassen NE California. Pittville, CA. 1036 Comment
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Apr 29 2013
  SEINET10859617  Juniperus occidentalis Leila M. Shultz, John S. Shultz 1985-6-23 Shultz 8601 Lassen 41 miles north of Susanville on highway 395. Dark basaltic soils. Western Juniper-sagebrush-bitterbrush association. 1435 Comment
  UCSB233  Juniperus occidentalis Haller, John 1959-08 Lassen 2 miles north of Susanville on road to Eagle Lake and Adin 1371 Comment
  SEINET10932817  Juniperus occidentalis subsp. australis Mary Susan Taylor 1982-5-29 Taylor 4570 Lassen T22N R17E e/sw sec 23. Loyalton quad. In Sagebrush Scrub along dirt rd paral- leling Hwy 395 on its e side, ca. 0.5 mi n of 395 jct with Scott Rd, ca. 20 mi n of Reno. 5000 ft. 1524 Comment
  UCD133871  Juniperus osteosperma John Thomas Howell 1961-9-26 36969 Lassen Beckworth Pass east side. 1554 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
  CHSC60920  Kelloggia galioides Vernon H. Oswald; Lowell Ahart 1993-7-8 5657 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. 1709 Comment
  SJSU11548  Kelloggia galioides J. W. Tilden 1960-6-27 1496 Lassen Westwood 1554 Comment
  UC1136752  Kelloggia galioides George A. Fischer and Irwin H. Johnson 1933-7-14 255 Lassen Lassen National Forest 1783 Comment
  NY539721  Kochia americana G. Schoolcraft 1998-9-14 2808 Lassen Honey Lake Valley northwest of Duck Lake 1219.2 Comment
  UC1132160  Koeleria macrantha A. Simontacchi 1940-7-8 945 Lassen 5.2 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1483844  Koeleria macrantha G. Schoolcraft 1980-7-28 335 Lassen e side Tule Mountain; e side of Tule Mtn. 2042 Comment
  UCD86011  Koeleria macrantha L. Whitney 1935-6-24 s.n. Lassen Squaw Valley. Comment
  CAS-BOT-BC271328  Koeleria pyramidata Gary Schoolcraft 1983-6-29 1042 Lassen Along Hwy 139 near Upper McBride Sp. 1889 Comment
  CAS-BOT-BC271329  Koeleria pyramidata Clarence Quick 1963-7-12 63 -32 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  UC726003  Kyhosia bolanderi A. A. Heller 1938-9-1 15342 Lassen about 2 mi e of Westwood 1524 Comment
  OBI75889  Kyhosia bolanderi Anthony Baniaga 2011-8-16 499 Lassen Lassen Natl Forest. Along F.S. 10, ca. 1 mi NE of Cummings Spring. Red Cinder quad. T30N R8E sec 7SE of SW 1920 Comment
  JEPS121276  Lactuca serriola Lowell Ahart, John Dittes 2013-7-23 18887 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC349842  Lactuca tatarica subsp. pulchella Gary Schoolcraft 1986-9-4 1669 Lassen Along n. shore of Eagle Lake 33-12-30 1554 Comment
  UC74070  Lactuca tatarica subsp. pulchella J. Burtt Davy 1897-6-17 Lassen Comment
  CAS-BOT-BC341484  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CAS-BOT-BC341486  Lagophylla ramosissima John Thomas Howell 1975-7-23 51391 Lassen Susanville 1295 Comment
  RSA0009792  Lagophylla ramosissima Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CDA43007  Lamium amplexicaule L. Ahart, John Dittes 2008-6-2 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
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Oct 5 2019
  CHSC99283  Lasthenia glaberrima Lowell Ahart; John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, along 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
  JEPS114878  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-22 15041 Lassen About 20 yards west of the road levee, along 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
  CAS-BOT-BC352940  Lasthenia glaberrima Wm. Anderson 1960-6-6 s.n. Lassen Barrow pit along county road S. of Mapes Ranch, Henry Lake Valley Comment
  UC1584016  Lathyrus lanszwertii var. aridus G. Schoolcraft 1990-5-15 2043 Lassen about 2 mi s Nubieber; John's Valley 1402 Comment
  POM253248  Lathyrus pauciflorus subsp. brownii A. A. Heller 1938-6-4 15147 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  CAS-BOT-BC321496  Layia glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, S of Susanville. Comment
  CAS-BOT-BC321494  Layia glandulosa John Thomas Howell 1962-6-19 37888 Lassen Sagebrush flat, 3 mi S of Hallelujah Junction 1524 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
  POM54275  Layia glandulosa subsp. glandulosa Milo S. Baker 1890-1 s.n. Lassen Milford. Comment
  HSC95178  Lemna minuta Gordon Leppig 1998-7-12 935 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95316  Lemna minuta Gordon Leppig 1998-8-17 1048 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC4789  Lemna trisulca R. Carter 1967-7-13 591 Lassen Ca. 5 mi E of Eagle Lake Biology Station, at point where rd. comes nearest to Willow Creek. 1560 Comment
  UC1101286  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-7-21 1051 Lassen 1 mi e of Madeline Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC112402  Lepidium appelianum Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18785 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  CAS-BOT-BC88820  Lepidium campestre Louella Bass 1973-6-15 110 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC112394  Lepidium chalepense Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18786 Lassen On the east side of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 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
  CDA3793  Lepidium latifolium Lee Wheeler 1962-8-15 Lassen Ravendale area. 0 Comment
  CHSC117182  Lepidium perfoliatum Lowell Ahart; John Dittes 2016-6-7 21017 Lassen On the east edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) southwest of Bieber. 1397 Comment
  HSC26172  Lepidium perfoliatum D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19282 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CAS-BOT-BC12812  Lepidium perfoliatum Margaret Williams 1974-7-27 74 -L-48 Lassen Sierra Nevada. Near Hallelujah Junction west of Highway 70. 1493 Comment
  HSC6828  Lepidium perfoliatum K. P. St. John 1965-5-6 28 Lassen Susanville, across from Walker's Restaurant Comment
  HSC79798  Lepidium perfoliatum William E. Rodstrom 1978-6-10 Lassen Behind BLM office, 705 Hull St., Susanville Comment
  UCD63835  Leptochloa fusca subsp. fascicularis Chandler Jensen 1959-9-8 Lassen Honey Lake Valley near Standish. Comment
  CHSC61229  Leptosiphon ciliatus P. V. Caldwell 1972-6-29 260 Lassen Eagle Lake. Stream that runs into Upper Deans Meadow, on bank. Comment
  RSA702599  Leptosiphon harknessii L. P. Janeway 2004-7-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18 1714 Comment
  SEINET3364450 Image available Leptosiphon harknessii Marcus E. Jones 1897-7-2 Lassen Susanville Comment
  UC1542923  Leucanthemum vulgare Gary Schoolcraft 1987-6-17 1746 Lassen about 3 mi e of Westwood; Hwy 36 1554 Comment
  HSC30081  Leucocrinum montanum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19264 Lassen Harvey Valley near Cone Springs Comment
  UC1553404  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen n of Said Valley Reservoir (along Hwy 139) 1676 Comment
  UC1609488  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1993-5-12 5375 Lassen Hwy 44 1.6 mi n.w. of its intersection with A21 (to Westwood) (ne side of Hwy 44) 1737 Comment
  CAS-BOT-BC508364  Leucocrinum montanum Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC508366  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mile north Madeline, 8.8 mile south Modoc Co. line 1676 Comment
  SEINET8480557  Leucocrinum montanum M. J. Williams 1969-5-24 s.n. Lassen Hwy 44, near Bogart Ranger Station. 1646 Comment
  JEPS94607  Lewisia nevadensis Vernon H. Oswald and Lowell Ahart 1997-5-27 8523 Lassen 3.6 mi ne Hwy. 139 (along draw crossing Forest Route 38N04 (between Hwy 139 between Willow Creek Guard Station and Coyote Flat)); Coyote Flat draw 1731 Comment
  UC1136693  Lewisia nevadensis A. Simontacchi 1940-5-5 714 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat quadrangle 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
  UC803892  Leymus G. L. Stebbins Jr. 1949-8-6 4007 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  JEPS87470  Leymus cinereus Vernon H. Oswald and Lowell Ahart 1993-6-14 5543 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach on w. shore of Eagle Lake (n. side of rd., ca 2.0 mi e.-n.e. of Spaulding Tract Rd. (Rd. 518, 33N89)) 1566 Comment
  RSA126617  Leymus condensatus H. S. Yates 1936-8-12 6086 Lassen McKenzie Meadows 1524 Comment
  CAS-BOT-BC274465  Leymus triticoides Louella Bass 1980-8-3 s.n. Lassen Standish 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
  JEPS96064  Ligusticum grayi Vernon H. Oswald and Lowell Ahart 1996-8-1 8127 .1 Lassen s.-s.w. Westwood (ca. 2 mi. n. of Dyer Mt. Lookout, Forest Rd. 28N56 (D-line), on downhill side of rd.) 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
  CAS-BOT-BC130512  Lilium pardalinum B. C. Cain 1925-8-24 99 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  SD2783  Limnanthes douglasii Mary S. Snyder 1894-4-28 Lassen Lassen 518 Comment
  UC1567430  Limosella acaulis G. Schoolcraft 1989-7-24 1995 Lassen along n shore Said Valley Reservoir; n shore of Said Valley Reservoir 1630 Comment
  JEPS94989  Linanthus ciliatus Vernon Oswald and Lowell Ahart 1997-6-24 8605 .1 Lassen s of Susanville (3.5 mi e of Gold Run Road (29N10), on n side of Diamond Mountain at a stream on Forest Road 29N43); Diamond Mountain, Forest Road 29N43 1655 Comment
  RSA716147  Linanthus ciliatus L. Ahart, John Dittes 2005-6-2 11936 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
  CHSC89741  Linanthus harknessii L. P. Janeway 2004-6-26 8147 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13 3.5 km north of junction of Road 33N18. 1714 Comment
  UC1025087  Linanthus harknessii Leo Whitney 1934-7-5 1788 Lassen ca 15 mi w Eagle Lake (near Harvey Spring); Lassen National Forest, Crater Mountain 2225 Comment
  UC867779  Linum lewisii Alice Eastwood Aug 22 1912-Aug 26 1912 1853 Lassen Trail from Morgans Springs to Lassen Butte Comment
  UCD35730  Linum lewisii var. lewisii Beecher Crampton 1960-6-18 5714 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC111965  Lipocarpha micrantha John Thomas Howell 1974-7-10 50524 Lassen Elysian Valley 1325 Comment
  POM72685  Lithospermum ruderale Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  UC1132218  Lolium temulentum A. Simontacchi 1940-6-13 855 Lassen 3.4 mi wsw Patterson Mountain (Lassen National Forest); Halls Flat Quad., Lassen National Forest Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  RSA271913  Lomatium donnellii Christopher Davidson 1975-6-7 2755 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  JEPS96076  Lomatium nevadense var. nevadense Vernon H. Oswald and Lowell Ahart 1996-6-24 7862 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows, ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of the meadow ca. 0.4 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1123085  Lomatium nevadense var. parishii A. Simontacchi 1940-5-27 768 A Lassen 9.3 mi NW of Crater Lake 1752 Comment
  UC1137734  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  CHSC108004  Lomatium nudicaule Lowell Ahart; John Dittes 2011-6-20 17497 Lassen About 40 yards east of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC89727  Lomatium nudicaule L. P. Janeway 2004-6-26 8150 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
  UC671788  Lomatium plummerae Dan Tillotson 1942-6-10 Lassen four mi s Madeline Comment
  CAS-BOT-BC123126  Lomatium ravenii Lincoln Constance; Rimo Carlo Felice Bacigalupi 1959-6-14 3672 Lassen One mile S of Ravendale 1463 Comment
  UC1479583 Image available Lomatium ravenii Gary Schoolcraft 1980-5-9 232 Lassen e Sierra Ordnance Depot (Herlong) (near CA-NV State line); e of Sierra Ordnance Depot (Herlong) 1219 Comment
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Oct 26 2017
  CHSC112191  Lomatium roseanum Dean Wm. Taylor 2012-6-7 21235 Lassen Sierra Nevada. Diamond Mts.: Ridgetop 1 mile east of Diamond Peak. 2225 Comment
  CHSC29875  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-6 31 Lassen Ca. 1 mi from ELFS where the power lines cross the road. 1572 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
  CHSC61026  Lonicera cauriana Vernon H. Oswald; Lowell Ahart 1993-8-3 5751 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC58491  Lonicera conjugialis Vernon H. Oswald 1992-7-3 5057 Lassen Lassen Volcanic National Park. Grassy Creek between Horseshoe and Snag lakes, ca. 0.3 mi NE of the trail to Cameron Meadow. 1950 Comment
  CHSC25905  Lotus K. R. Stern 1967-8-1 2436 Lassen California State Hwy. 139, 14 mi. N of Susanville. Comment
  CHSC60829  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1993-6-28 5608 Lassen N of Hwy 44 of Harvey Rd. One (34N27) 1.5 mi NE of Aspen Well, N of Harvey Valley, NE of Poison Lake. 1761 Comment
  JEPS126486  Lotus corniculatus Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-16 CA 350 -050 Lassen Take Smoke Creek Road to Sand Pass Road. Turn left at Parker Reservoir. Comment
  POM28313  Lotus crassifolius Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CDA27193  Lotus crassifolius L. E. Allen 1967-6-4 Lassen Pinecrest Ranch, 0.5 mile south of Susanville. 0 Comment
  UC1594612  Lotus nevadensis var. nevadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5106 Lassen 1.2 mi se County Rd. A21 (Long Lake on s side of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  JEPS88234  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7818 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, at 6.0 mi. post e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC1129240  Lotus purshianus var. purshianus A. Simontacchi 1940-6-30 903 Lassen 2.6 mi w Ladder Butte; Lassen National Forest, Halls Flat Quad. 1684 Comment
  NY716011  Lotus tenuis A. J. Cronquist 1959-6-17 8474 Lassen Old field near Honey Lake, 1 mile southeast of Milford, 26 miles southeast of Susanville 1311 Comment
  JEPS85684  Lupinus W. L. Jepson 1937-8-11 19375 Lassen Milford 1280 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
  JEPS108147  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 & 28N02) and Road 28N01 1859 Comment
  CHSC118483  Lupinus angustiflorus Don Lepley 2015-6-14 Lassen Lassen National Forest. Eagle Lake Ranger District. Along Road 32N73 about 0.4 air mile east-southeast of Antelope Mt. Lookout and about 18 air miles northwest of Susanville. UTM 677436 x 4495404 2244 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
  SEINET10490460  Lupinus arbustus subsp. arbustus Katherine L. Morris 1973-5-25 Morris 211 Lassen 9.6 miles n of milford on us 395 in an area covered with artemisia, purshia, And rabbit bush Comment
  SEINET10484731  Lupinus arbustus subsp. silvicola Paul Gallian, David B. Dunn 1971-6-2 Gallian 498 Lassen Ca 22 miles s of adin on cal hwy 139; in basalt; assoc.; Juniper, artemisia 1646 Comment
  CAS-BOT-BC208732  Lupinus argenteus var. heteranthus E. K. Balls 1950-5-9 15948 Lassen Along roadsides 6 miles south of Doyle. 1371 Comment
  CAS-BOT-BC208737  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21501 Lassen Reserboir above Grasshopper Valley, Lassen Forest 1500 Comment
  CAS-BOT-BC208747  Lupinus argenteus var. heteranthus John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49232 Lassen On Hwy. 395 NW of Doyle on road to Milford - Sierra Nevada 1280 Comment
  CAS-BOT-BC208752  Lupinus argenteus var. heteranthus Gary Schoolcraft 1983-7-20 1098 Lassen S. slopes of Fredonyer Peak 2194 Comment
  CAS-BOT-BC208757  Lupinus argenteus var. heteranthus Doris Kildale Gillespie 1930-5-13 9372 Lassen Between Susanville and Janesville. Comment
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline Comment
  CHSC5056  Lupinus argenteus var. heteranthus L. B. Barlow 1967-6-24 26 Lassen 3 mi. east of Eagle Lake Biological Station on road to Murrer's Upper Meadow. 1554 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
  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
  CHSC99140  Lupinus argenteus var. heteranthus Lowell Ahart; John Dittes 2008-6-19 14873 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
  JEPS117258  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2010-7-31 16977 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SD147580  Lupinus argenteus var. heteranthus John Thomas Howell, Gordon H. True, Margaret Williams 1973-5-12 49232 Lassen On Hwy 395 NW of Doyle on the road to Milford 1280 Comment
  UC1191476  Lupinus argenteus var. heteranthus Verne Grant, Irving Schneider 1947-8-1 8232 Lassen Madeline Plain; irrigation ditch running sw into State Fish and Game nesting area on w end of S19 Comment
  CHSC115057  Lupinus argenteus var. meionanthus Don Lepley 2013-7-2 Lassen Lassen National Forest, Eagle Lake Ranger District. Approximately 1.8 air miles west-southwest of head of Elysian Valley, northwest of Bear Flat. 2095 Comment
  SEINET10969898  Lupinus brevicaulis David B. Dunn 1956-7-3 Dunn 11916 Lassen Coll. On a dry rocky slope with only an occasional juniper, considerable Artemisia tridentata. N side of the alkali flats, 31 mi. Ne of johnstonville On hwy 395. Comment
  SEINET5328130  Lupinus brevicaulis M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-14 86- 40 -1 Lassen Near Hwy 395, at Noble Emigrant Trail Sign, 7 rd miles N of Litchfield 1524 Comment
  CAS-BOT-BC196642  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  POM26869  Lupinus caudatus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  RSA687493  Lupinus caudatus M. Bourell 1997-5-31 5879 Lassen Wendel Road 10.9 miles southeast of Highway 395. Comment
  RSA39736  Lupinus caudatus Philip A. Munz 1947-5-20 11888 Lassen Milford. 1265 Comment
  CDA43214  Lupinus caudatus subsp. caudatus Jeffery Huber 1971-6-2 145 Lassen 6 miles north of Hallelujah Junction on US Highway 295. 0 Comment
  SEINET10490707  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11919 Lassen Collected on rolling gravelly slopes, in spots of deeper soil and also in Runoff areas from the hwy. Comment
  SFV18614  Lupinus lepidus var. confertus T. W. Nelson, J. P. Nelson 1990-7-14 8776 Lassen Along State Route CA-395 at Janesville Road. Lassen County Site #3. 1250 Comment
  UC1129510  Lupinus lepidus var. confertus H. S. Yates 1936-8-11 6071 Lassen Baxter Creek; Susanville Quadrangle, Baxter Creek Comment
  UC127007  Lupinus lepidus var. confertus M. S. Baker and Frank Nutting 1894-6-20 Lassen Big Valley Comment
  UCD108246  Lupinus lepidus var. confertus Richard R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy. 395, ca 7.8 miles southeast of Susanville. 1293 Comment
  HSC103613  Lupinus lepidus var. confertus Thomas W. Nelson, Jane Nelson 1981-7-17 6735 Lassen Along State Route 395, 22 mi. S of Susanville at milepost 46.80 Comment
  CHSC14189  Lupinus lepidus var. lobbii M. S. Taylor 1974-7-10 271 Lassen Collected roadside, ca. 3 mi s of Gallatin Beach, ca. 3 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  UC1138211  Lupinus lepidus var. lobbii George A. Fischer and Irwin H. Johnson 1933-7-12 F 203 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  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
  CHSC99124  Lupinus lepidus var. sellulus Lowell Ahart; John Dittes 2008-6-19 14886 Lassen Open flat, east bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  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
  CHSC60830  Lupinus leucophyllus Vernon H. Oswald; Lowell Ahart 1993-6-28 5607 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC126929  Lupinus leucophyllus M. S. Baker and Frank Nutting 1894-7-21 Lassen near Eagle Lake; near Eagle Lake 1524 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
  UC201948  Lupinus leucophyllus Franklin P. Nutting Lassen flat near Eagle Lake; Flat near Eagle Lake Comment
  UCD107964  Lupinus leucophyllus R. Tofsrud 1951-7-13 s.n. Lassen Bieber area, Albaugh Ranch. Comment
  UCSC010319  Lupinus microcarpus var. microcarpus Unknown 2016-6-7 21018 Lassen West edge of State Highway 299, Big Valley Mountains, 0.4 air miles northeast of Big Valley Summit, 5.0 air miles southwest of Bieber. 1398 Comment
  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
  SEINET10871085  Lupinus polycarpus Marcus E. Jones 1897-6-26 Jones s.n. Lassen Susanville, perkin's ranch. 1463 Comment
  NY747608  Lupinus polyphyllus var. saxosus G. Schoolcraft 1985-5-15 1386 Lassen Along Hwy 139 about 2 miles [illegible word] of Hayden Hill turnoff 1463 Comment
  JEPS67163  Luzula comosa var. laxa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek, Big Valley Mts. Comment
  SEINET11601319 Image available Madia elegans Mrs. C. G. Gulling 1905-1 1530 Lassen Big Meadows Comment
  UC296085  Madia elegans E. B. Babcock and J. L. Collins 1926-7-21 88 Lassen near Peter Lassne's grave; Susanville Comment
  CAS-BOT-BC343693  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia Comment
  UC89448  Madia elegans W. E. Bryant Lassen Comment
  CAS-BOT-BC334692  Madia glomerata John Thomas Howell 1973-7-10 49783 Lassen Fredonyer Pass, Sierra Nevada 1737 Comment
  CAS-BOT-BC334688  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC334689  Madia glomerata David D. Keck 1930-7-23 955 Lassen Fifteen miles west of Susan ville, Sierra Nevada 1524 Comment
  CAS-BOT-BC343056  Madia gracilis John Thomas Howell 1973-7-10 49781 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC343054  Madia gracilis David D. Keck 1930-7-23 949 Lassen Susanville 1280 Comment
  CAS-BOT-BC343061  Madia gracilis Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale 1680 Comment
  JEPS103229  Malacothrix floccifera G. Schoolcraft 1997-6-24 2595 Lassen About 4 miles W of Doyle on S side of Doyle Grade Road 1767 Comment
  UC1523757  Malacothrix floccifera Gary Schoolcraft 1983-7-6 1068 Lassen w of Susanville (n of Gold Run Road) 1463 Comment
  CHSC80607  Malacothrix glabrata V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10038 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  HSC63963  Malacothrix sonchoides Teresa Prendusi 1980-5-30 Lassen Mapes Spring on hillside 1555 Comment
  SEINET8894054  Malvella leprosa D. S. Mapes 1942-7-13 s.n. Lassen Mapes Ranch, Litchfield. 1067 Comment
  CHSC58832  Marsilea oligospora Vernon H. Oswald; Lowell Ahart 1992-7-16 5126 Lassen Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1.0 mi E of Willow Spring Rd, (Forest Rd. 31N56), between Old Station and Susanville. 1745 Comment
  UC1594528  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1992-7-16 5126 Lassen between Old Station and Susanville (Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), 1 mi e of Willow Spring Rd. (Forest Rd. 31N56)) 1745 Comment
  POM260428  Marsilea vestita C. L. Hitchcock 1940-5-26 6649 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  CHSC71221  Matricaria discoidea Vernon H. Oswald; Lowell Ahart 1998-6-4 9138 Lassen Red Rock Rd. at its junction with Hwy. 395 south of Constantia. 1365 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
  CHSC5216  Matricaria occidentalis P. Collett 1946-6-17 Lassen Eagle Lake. Willow Creek Valley. 1463 Comment
  CDA8329  Matricaria occidentalis T. C. Fuller 1963-7-15 10886 Lassen East of road to Susanville, 2.2 miles southeast of Pittville. 0 Comment
  UCD86363  Melica bulbosa B. L. Kay 1961-6-28 s.n. Lassen 6 miles NW of Madeline. Comment
  UCD86379  Melica bulbosa L. Whitney 1935-7-11 3226 Lassen Camp 10, Fruit Grower's Supply Company. Lassen National Forest. Comment
  CAS-BOT-BC282042  Melica fugax John Thomas Howell 1934-6-14 12167 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CHSC115596  Mentha arvensis Lowell Ahart; John Dittes 2015-7-14 20337 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1267 Comment
  UC1594650  Mentha canadensis Vernon H. Oswald and Lowell Ahart 1992-7-16 5109 Lassen Bridge Creek entering McCoy Flat Reservoir (on the s side of Hwy 44 between Old Station and Susanville); Bridge Creek entering McCoy Flat Reservoir 1691 Comment
  JEPS117360  Mentzelia albicaulis Lowell Ahart, John Dittes 2010-8-30 17089 Lassen North side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west of Adin, about 7.7 miles (air) northeast of Bieber, Big Valley 1274 Comment
  JEPS117562  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
  JEPS87412  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-14 5536 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of Eagle Lake); Eagle Lake 1566 Comment
  CHSC23509  Mentzelia congesta Wayne O. Baum 1971-7-19 71 -72 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC30625  Mentzelia congesta E. C. Taylor 1975-7-19 83 Lassen Summit of Galatin Peak. 2117 Comment
  CHSC4913  Mentzelia dispersa A. E. Anderson 1967-6-23 10 Lassen Abundant among sagebrush in Jeffrey Pine-Juniper forest around Eagle Lake Biological Station. 1554 Comment
  JEPS127346  Mentzelia dispersa Lowell Ahart, John Dittes 2016-7-13 21124 Lassen 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  JEPS94543  Mentzelia dispersa Vernon Oswald and Lowell Ahart 1997-6-24 8603 Lassen s of Susanville (on n side of Diamond Mountain at a stream on Forest Road 29N43, 3.5 mi e of Gold Run Road); Diamond Mountain, Forest Road 29N43 1655 Comment
  JEPS95161  Mertensia ciliata Vernon Oswald and Lowell Ahart 1997-6-24 8617 Lassen 2.7 mi e of Lassen National Forest boundary (7.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment on the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  NY1084278  Mertensia oblongifolia M. J. Williams 1986-5-14 86- 39 --1 Lassen 1.5 rd mi W of turn to Dodge Reservoir, on rd from Tuledad Canyon to Ravendale. 1706.9 Comment
  CAS-BOT-BC231081  Mertensia oblongifolia Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-14 86- 39 -1 Lassen 1.5 mile W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale 1706 Comment
  CHSC6266  Micranthes oregana M. West 1946-7-12 Lassen Stephens Ranch. 1905 Comment
  SD8379  Micranthes tolmiei Mrs. R. M. Austin Aug 1882 Lassen Lassen Co Calif Comment
  CAS-BOT-BC322655  Microseris laciniata Elmer I. Applegate 1929-6-24 5879 Lassen Big Valley near Bieber Comment
  CHSC77197  Microseris laciniata subsp. laciniata G. Schoolcraft 1993-6-1 2274 Lassen Secret Creek area S. of TulePatch Spring. Meadow. 1463 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
  UC1136772  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
  POM34993  Microseris nutans Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC29930  Microsteris gracilis Robin L. Ondricek 1978-6-20 65 Lassen Callatin Burn, 1.8 mi s of Five Corners. 2011 Comment
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Jan 31 2011
  CHSC6206  Microsteris gracilis C. Palmiter 1946-6-20 Lassen Grasshopper Valley. Eagle Lake. 1624 Comment
  OBI48095  Microsteris gracilis Rhonda Riggins 1989-4-27 1637 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  SEINET10902895  Microsteris gracilis Mary Susan Taylor 1974-5-4 Taylor 227 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  RSA104220  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 21757 Lassen Sage brush flat about Lassen County: 8 miles S of Madeline 1280 Comment
  SD62167  Miltitzia lutea Rimo Bacigalupi, G. T. Robbins 1955-7-21 5429 Lassen Southeastern part of Secret Valley, along Smoke Creek Ranch Road, 8.0 miles east of U. S. Highway 395. 1402 Comment
  UC1609128  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  UC1609365  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-7-8 5652 Lassen 1.9 mi n Hwy. 44 (Pittville Rd. (Lassen 111, 36N01), se edge of lake, on the e side of the railroad, which parallels the lake shore at this point); Poison Lake 1709 Comment
  JEPS88205  Mimulus breweri Vernon H. Oswald and Lowell Ahart 1996-6-24 7866 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, on the W side of the meadow ca. 0.2 mi S of the cabin. 1633 Comment
  JEPS10455  Mimulus guttatus W. L. Jepson 1939-8-11 19374 Lassen Milford 1280 Comment
  UC27139  Mimulus layneae M. S. Baker and Frank Nutting Lassen Big Valley Comment
  CHSC13734  Mimulus moschatus Sue Villard 1973-7-12 57 Lassen Shoreline of Coleman Lake, ca. 5 mi s of Eagle Lake Foeld Station, ca. 13 mi nw of Susanville. Comment
  SEINET10929288  Mimulus nanus Paul Gallian, David B. Dunn 1971-6-2 Gallian 467 Lassen 6 mi n of halleluja jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  UC1567374  Mimulus nanus var. mephiticus G. Schoolcraft 1989-6-17 1909 Lassen nw slope Shaffer Mtn. 1828 Comment
  UCD94000  Mimulus nanus var. mephiticus Dena Grossenbacher; Joel Smith 2008-6-25 893 Lassen Along Forest Service Road 29N43 approximately 1 mile east of junction with Gold Run Road. 1682 Comment
  JEPS15594  Mimulus nanus var. nanus Milo S. Baker 1893-7-5 Lassen Dixey 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
  UC1778582  Mimulus pulsiferae S. E. Schoenig 1998-7-5 98 -69 Lassen SW shore of Moll Reservoir, 2 meters from waters edge. 1499 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
  UC1609384  Mimulus suksdorfii Vernon H. Oswald and Lowell Ahart 1993-6-14 5522 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd. (Rd 518, 33N89)); Eagle Lake 1566 Comment
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Nov 22 2007
  CAS-BOT-BC221782  Monardella odoratissima John Thomas Howell 1934-7-9 12525 Lassen Pine Creek Flat Comment
  HSC22951  Monardella odoratissima John Pratt 1970-6-21 30 Lassen 1738 Comment
  SEINET12319571  Monardella odoratissima J. D. Prouty 1978-1 33 Lassen NW side of Eagle L., Pine Creek just upstream of fish trap on S bank, T32N R10E Sec1 1561 Comment
  CAS-BOT-BC221974  Monardella odoratissima subsp. glauca John Thomas Howell 1934-7-8 12487 Lassen Spalding's, Eagle Lake Comment
  RSA0037134  Monardella odoratissima subsp. glauca L. P. Janeway, B. Castro 2012-7-2 10933 Lassen Modoc Plateau. Along Skedaddle Ranch Road 6.4 road km north of Skedaddle Creek at an unnamed tributary of Bull Creek. 1533 Comment
  UC1124621  Monardella odoratissima subsp. glauca A. Simontacchi 1940-6-23 880 Lassen 3.2 mi sw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC506902  Monardella odoratissima subsp. glauca George A. Fischer, Irwin H. Johnson 1933-7-21 F 279 Lassen Stringer Lassen Forest 1696 Comment
  UCR244066  Monardella odoratissima subsp. glauca Jim Andre, G. L. Clifton 1993-6-9 19692 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
  SD87705  Monardella odoratissima subsp. glauca Frank W. Peirson 1926-6-24 6850 Lassen 2-3 miles southward from the Madeline Plain. Comment
  CAS-BOT-BC213932  Monardella odoratissima subsp. pallida A. M. Vollmer; L. Beane 1953-7-1 47 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  HSC14276  Monardella odoratissima subsp. pallida M. T. Milligan 1964-7-16 133 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  UC506977  Monardella odoratissima subsp. pallida George A. Fischer, Irwin H. Johnson 1933-7-12 F 225 Lassen Lassen Forest 1722 Comment
  JEPS122366  Monardella sheltonii Joseph Broberg, Jaycee Leonard 2012-8-27 CA 320 -127 Lassen From Alturas head South on Highway 395. At the town of Likely turn left onto county road 64, and continue to Jess Valley. Turn right at fork onto county road 258. Continue past Blue Lake, and turn onto Clark Valley road. Collection site is just after border between BLM and USFS land. South of aspen stand Comment
  UC1136460  Monolepis nuttalliana A. Simontacchi 1940-6-8 843 Lassen Halls Flat Ranger Station Lassen Nat'l Forest, Halls Flat Quad., Halls Flat Ranger Sta Comment
  CAS-BOT-BC444693  Montia chamissoi Lassen 1927 G. S. Crew 1927-6-25 25 Lassen Lassen National Forest. Norval Flat 2051 Comment
  CHSC4797  Montia chamissoi R. Carter 1967-7-7 583 Lassen Collected at W end of reservoir in open wet meadow. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  CHSC64849  Montia chamissoi Vernon H. Oswald 1995-6-26 6924 Lassen Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally bundant in shallow water in a rocky, roadside streamlet. 1712 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
  CHSC93672  Montia linearis Lowell Ahart; John Dittes 2005-6-2 11956 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1425 Comment
  CAS-BOT-BC262634  Muhlenbergia asperifolia John Thomas Howell; G. H. True 1973-8-1 50147 Lassen In Mountain Meadows east of Westwood 1554 Comment
  CAS-BOT-BC262636  Muhlenbergia asperifolia C. S. Robinson 1928-9-18 120 Lassen Lassen National Forest. Hanna Estate, Morgan Springs. Around Sulphur Springs 1508 Comment
  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
  POM115416  Muhlenbergia asperifolia Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  SEINET7297179 Image available Muhlenbergia asperifolia John Thomas Howell, Gordon H. True 1973-1 50147 Lassen Roadside in Mountain Meadows east of Westwood 1554 Comment
  JEPS28280  Muhlenbergia filiformis J. T. Howell 1957-7-28 940 Lassen marsh near west end of Widow Lake; Lassen Volcanic National Park 2072 Comment
  UC60840  Muhlenbergia filiformis M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  CAS-BOT-BC275084  Muhlenbergia richardsonis G. Schoolcraft 1999-6-30 2852 Lassen Small res. 1 mile W of Horne Ranch, 12 miles E of Ravendale 1645 Comment
  UC1024739  Muhlenbergia richardsonis Leo Whitney 1933-8-3 3042 Lassen ca 8 mi nw Eagle Lake (on open flats); Lassen National Forest, Slate Creek 1920 Comment
  UC1101591  Muhlenbergia richardsonis Malcolm A. Nobs and S. Galen Smith 1949-7-21 1060 Lassen 4 mi n Madeline (shallow marshy stream from springs) Comment
  UC506980  Muhlenbergia richardsonis George A. Fischer and Irwin H. Johnson 1933-7-12 F 224 Lassen Stringer Mdw. Lassen National Forest 1722 Comment
  UCD86950  Muhlenbergia richardsonis R. M. Love 1940-7-5 s.n. Lassen Madeline Plains. Comment
  CHSC91191  Muilla transmontana Lowell Ahart; John Dittes 2005-6-1 11855 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  UC1608993  Myosurus apetalus Vernon H. Oswald and Lowell Ahart 1993-5-12 5392 Lassen 0.6 mi e Shasta County Line (n side of Hwy 44, between Old Station and Poison Lake) 1645 Comment
  CHSC27619  Myosurus apetalus var. borealis Robert A. Schlising 1978-7-30 3331 Lassen S of Eagle Lake at Deans Ridge. Margin of reservoir. 1950 Comment
  CHSC107321  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
  JEPS94606  Myosurus minimus Vernon H. Oswald and Lowell Ahart 1997-5-27 8518 Lassen on Forest Route 38N04 2.6 mi ne Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat)); Williams Reservoir 1682 Comment
  UC9325  Myosurus minimus M. S. Baker and Frank Nutting 1894-7-1 Lassen w side Dixey Mts Comment
  JEPS96085  Myriophyllum sibiricum Vernon H. Oswald and Lowell Ahart 1996-9-10 8281 Lassen s.w Westwood (Mt. Meadows Reservoir, shallow water along R.R. embankment n.w. edge of reservoir); Mt. Meadows Reservoir 1539 Comment
  HSC30194  Nama aretioides var. multiflora D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19299 Lassen Along Hwy. 395, 4 mi. E of Standish 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
  JEPS1373  Nama densa John G. Lemmon 1893-5-28 Lassen Susanville Comment
  RSA0011554  Navarretia R. F. Thorne, Larry E. DeBuhr 1975-8-22 46988 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CHSC23862  Navarretia breweri K. R. Stern 1974-6-26 5856 Lassen Ditch bank beside railroad track, e side of Poison Lake Rd. to Pittville, 1.8 mi nw of intersection with Hwy. 44. Comment
  CHSC60759  Navarretia breweri Vernon H. Oswald; Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  NY1012731  Navarretia breweri N. H. Holmgren 1980-7-3 9491 Lassen Rye Patch Canyon road, 3.4 km (2.1 miles) east of U.S. Highway 395, 14.5 km (9 miles) airline distance southeast of Ravendale 1700 Comment
  UC133863  Navarretia breweri Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC1609452  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake rd (Lassen A1) ca 3 mi w Eagle Lake (0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  UC773905  Navarretia breweri L. R. Short and J. Warren 1936-6-5 S- 374 Lassen Burgess Spring Experiment Range Lassen Forest 1798 Comment
  CHSC26881  Navarretia divaricata K. R. Stern 1974-6-26 5863 Lassen 100 yds. s of Hwy. 44, 34 mi nw of Susanville. Meadow. Comment
  JEPS17719  Navarretia divaricata subsp. vividior Rimo Bacigalupi with G. T. Robbins 1955-7-19 5372 Lassen 10.3 mi se Adin (along Ash Valley road between Adin and Madeline) 1524 Comment
  POM74438  Navarretia intertexta Marcus E. Jones 1897-6-18 10111 Lassen Chat. 1524 Comment
  SEINET3894760  Navarretia intertexta Leigh A. Johnson, Haley M. Smith 2011-6-25 11 -065 Lassen Along Hwy 299 about 9.4 miles east of jct with Hwy A2 and 1.4 west of jct with Hwy 139, southwest of Adin.; 0 Comment
  UCD32670  Navarretia intertexta Beecher Crampton 1954-7-6 2072 Lassen Lassen County, 17 miles south of Ravendale, along US highway 395. 1524 Comment
  POM74488  Navarretia intertexta Marcus E. Jones 1897-7-1 10134 Lassen 7 miles south of Susanville at Perkin's Ranch 1524 Comment
  CHSC110998  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2012-7-9 18303 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northesast of Bieber, Big Valley. 1267 Comment
  CHSC112979  Navarretia intertexta subsp. propinqua Lowell Ahart; John Dittes 2013-7-22 18853 Lassen Drainage filled with dirt from construction of a pond, 10 yards south of the man made pond, about 140 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1594649  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5111 Lassen s side Hwy. 44 (Bridge Creek entering McCoy Flat Reservoir, between Old Station and Susanville); McCoy Flat Reservoir, Bridge Creek 1691 Comment
  UC913382  Navarretia intertexta subsp. propinqua G. Thomas Robbins 1945-9-24 2148 Lassen along Susanville to Pittville highway; Lassen National Forest 1737 Comment
  UC23430  Navarretia leptalea subsp. leptalea M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS19812  Navarretia leucocephala Rimo Bacigalupi with S. Galen Smith 1957-6-28 6002 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  SJSU11520  Navarretia leucocephala subsp. bakeri J. W. Tilden 1958-6-27 1295 Lassen Madeline, Madeline Plains 1615 Comment
  CHSC112444  Navarretia leucocephala subsp. minima Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18778 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  HSC82246  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1980-7-6 5986 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  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
  SEINET3860230  Navarretia leucocephala subsp. minima Leigh A. Johnson 2006-1 06 -142 Lassen Lassen Natl. Forest; along west side of dirt road leading to Champs Flat from Hwy 44 (across from county road A21), 3.7 miles from jct with Hwy 44.; 0 1716 Comment
  UC1112253  Navarretia leucocephala subsp. minima R. C. Bacigalupi with S. Galen Smith 1957-6-28 6001 Lassen 3.1 mi s Madeline (Highway 395); Madeline Plains 1615 Comment
  UC23681  Navarretia leucocephala subsp. minima J. Burtt Davy Jun 17 1897-Jun 24 1897 3362 Lassen Honey Lake Valley Comment
  RSA67607  Navarretia sinistra Verne Grant, Alva Grant 1950-7-13 8941 Lassen Above Fredonyer Camp on road from Westwood to Susanville 1524 Comment
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 Lassen Gold Run Creek south of Susanville Comment
  JEPS107402  Nemophila parviflora var. austiniae Lowell Ahart, John Dittes 2005-6-1 11898 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  CHSC107325  Nemophila pedunculata Lowell Ahart; John Dittes 2011-6-20 17481 Lassen On old gopher mounds, 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
  CHSC99497  Nemophila pedunculata Lowell Ahart; John Dittes 2008-6-20 14918 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET10832656  Nicotiana attenuata Mary Susan Taylor 1974-1 Taylor 270 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UC8805  Nuphar lutea subsp. polysepala J. Burtt Davy Jun 17 1897-Jun 24 1897 3336 Lassen Honey Lake Valley, deep pools of Susan River Susan River; Honey Lake Valley, Susan River Comment
  CHSC7772  Oenothera Beverley J. Wise 1969-5-23 69 Lassen 35 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  JEPS124827 Image available Oenothera cespitosa M. L. Wheelis 1964-6-30 125 Lassen 16 miles north of Hallelujah Junction, highway 395. Comment
  UC66124  Oenothera deltoides subsp. piperi P. B. Kennedy 1901-6-10 Lassen R.R. station Constantia Comment
  CDA18274  Onobrychis viciifolia G. D. Barbe 1974-8-2 1940 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC349943  Onopordum acanthium T. C. Fuller 1958-7-9 901 -58 Lassen Highway 299, Bieber Comment
  CDA36782  Onopordum acanthium D. B. Joley 1976-6-16 21 Lassen Grasshopper Lake. 0 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
  JEPS88564  Oreostemma alpigenum var. andersonii Vernon H. Oswald and Lowell Ahart 1996-8-1 8120 A Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi n Dyer Mtn. Lookout (on downhill side of road, ssw of Westwood) 1737 Comment
  UC2027324  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen National Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mountain quadrangle Comment
  SEINET10549655  Orthocarpus copelandii Mary Susan Taylor 1974-1 Taylor 307 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC27677  Orthocarpus cuspidatus subsp. cryptanthus Jerry Sndgrass 1978-6-28 5 Lassen Lower Dry L., E of Eagle L. 1645 Comment
  CHSC60858  Orthocarpus cuspidatus subsp. cryptanthus Vernon H. Oswald; Lowell Ahart 1993-6-28 5604 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  RSA337231  Orthocarpus hispidus Noel Holmgren, Patricia K. Holmgren 1980-7-3 9483 Lassen US Highway 395, 7.4 km (4.6 mi) S of Ravendale. 1620 Comment
  RSA715624  Orthocarpus hispidus L. Ahart, John Dittes 2005-6-1 11902 Lassen North side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 mile (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah junction. 1460 Comment
  SD7584  Osmorhiza occidentalis Mrs. R. M. Austin 1879-1 Lassen Comment
  NY404457  Oxytheca dendroidea subsp. dendroidea R. F. Hoover 1940-10-5 4676 Lassen Pass between Shaffer Mountain and Warren Peak Comment
  UC30052  Oxytheca perfoliata J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CHSC63381  Packera cana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6312 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  CAS-BOT-BC228565  Packera indecora Kirsten Bovee 2012-7-10 s.n. Lassen Lassen National Forest: 200 m south of Pine Creek near type locality 1706 Comment
  UC35937 Image available Packera indecora M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
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Sep 26 2006
  CAS-BOT-BC317058  Packera multilobata Elmer Ivan Applegate 1897-6-3 867 Lassen south of Madeline plains Comment
  CHSC96703  Packera pseudaurea var. pseudaurea Gordon Leppig 1998-7-12 948 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  HSC18106  Paeonia H. E. Parks, S. T. Parks Jun 1928 223 Lassen Lassen National Park, Drakesbad 1768 Comment
  CAS-BOT-BC10388  Paeonia brownii Margaret Williams; Steven Williams 1974-7-26 74- 2 -14 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70. 1493 Comment
  CAS-BOT-BC10387  Paeonia brownii J. T. Howell; Gordon H. True; Margaret Williams 1973-5-12 49158 Lassen In cemetary, Janesville 1295 Comment
  SEINET10537860  Paeonia brownii Paul Gallian, David B. Dunn 1971-6-2 Gallian 503 Lassen 6 mi n of hallelujah hct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC13509  Panicum J. Pitts 1972-6-23 271 Lassen 50 yds. n of Eagle Lake Biology Station. 1524 Comment
  JEPS121279  Panicum Lowell Ahart, John Dittes 2013-7-23 18909 Lassen On the E side the gravel road, N-S road W of Big Canal, 0.76 Mile N of CA 299, 4.9 air miles NE of Bieber, Big Valley. Comment
  CAS-BOT-BC253720  Panicum capillare John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49511 Lassen Elysian Valley, W of Janesville 1325 Comment
  SEINET4691127  Panicum capillare A. Tiehm 1980-1 5759 Lassen Amedee Hot Springs, north end of Honey Lake Valley, 4 air miles SE of Wendel 1220 Comment
  UCD89524  Panicum capillare John Thomas Howell 1973-7-10 49795 Lassen Susanville. 1295 Comment
  CAS-BOT-BC259609  Pascopyrum smithii G. Schoolcraft 1998-7-14 2760 Lassen On flat NE of Shaffer Mountain 1356 Comment
  CAS-BOT-BC259611  Pascopyrum smithii R. E. Frenkel 1964-7-12 663 Lassen On California Highway 299, 1.5 miles W of Bieber 1249 Comment
  CHSC91320  Pectocarya penicillata Lowell Ahart; John Dittes 2005-6-1 11907 Lassen Road edge, on the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  JEPS94120  Pectocarya penicillata Vernon H. Oswald and Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at intermittent drainage crossing the rd. 2.3 mi. s. Milford 1255 Comment
  UC1258487  Pectocarya penicillata G. Schoolcraft 1980-5-8 231 A Lassen e Herlong; Bureau of Land Management 1219 Comment
  HSC31343  Pectocarya setosa D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19279 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  CHSC5898  Pedicularis attollens M. West 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  HSC20935  Pedicularis groenlandica H. E. Parks, S. T. Parks Jun 1928 251 Lassen Lassen National Park, Drakesbad 1677 Comment
  UC2042972  Pedicularis semibarbata Barbara Ertter 1990-5-13 8965 Lassen McCoy Road N of Westwood, 3 mi from junction with A21, ca. 6 air miles N of Westwood. Comment
  SD6613  Pedicularis semibarbata Mrs. R. M. Austin 1880-1 Lassen Dutch Hill Comment
  RSA401794A  Penstemon deustus subsp. sudans Francis W. Pennell 1940-6-9 25768 Lassen Route 36, hill west of Susanville. 1372 Comment
  CHSC60779  Penstemon deustus var. pedicellatus Vernon H. Oswald; Lowell Ahart 1993-6-14 5513 Lassen Lassen A1 (Eagle Lake Rd.) 1.0 mi N of its jct. with Lassen A21 (32N02), on the W edge of Brockman Flat Lava Beds, ca. 4 mi (air) W of Eagle Lake. 1810 Comment
  HSC81803  Penstemon deustus var. pedicellatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6035 Lassen Ash Valley, along branch road off Adin-Madeline Rd., just S of bridge over Ash Creek, 16 mi. SE of Adin, 2.5 mi. SE of junction with main road 1555 Comment
  NY591825  Penstemon deustus var. pedicellatus F. W. Pennell 1940-6-7 25722 Lassen Route 299, 11 miles west of Nubieber 1097.3 Comment
  CHSC23498  Penstemon gracilentus Wayne O. Baum 1971-7-7 71 -85 Lassen E. slope of Gallatin Peak. 1981 Comment
  CHSC25147  Penstemon gracilentus B. Anthony 1967-7-10 263 Lassen Deans Meadow, 6.8 mi from Eagle Lake Biological Station. 1920 Comment
  CHSC62007  Penstemon gracilentus Eenam Sin 1992-6-3 26 Lassen North east corner at the base of Gallatin Peak. 1524 Comment
  HSC69068  Penstemon gracilentus Gary Schoolcraft 1980-8-13 352 Lassen N face of Diamond Mtn., S of Susanville 1982 Comment
  RSA408033  Penstemon gracilentus Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  UC584356  Penstemon janishiae G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2282 Lassen summit and e slope Diamond Mt. 2194 Comment
  UCD124278  Penstemon laetus Beecher Crampton 1964-6-26 7082 Lassen ca. 32 miles northwest of Susanville west end of Harvey Valley. Comment
  CHSC1867  Penstemon neotericus V. Holt 1943-8-1 Lassen Westwood. 1463 Comment
  POM195120  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood. 1494 Comment
  UC423645  Penstemon neotericus David D. Keck 1930-7-23 957 Lassen two mi e Westwood; Sierra Nevada, e of Westwood 1493 Comment
  NY627254  Penstemon neotericus K. A. Vincent 1987-6-25 4435 Lassen Sierra Nevada, Goodrich Mountain; along CA 36, ca. 1 mile east of jct. CA A21 on east side of Westwood. 1524.0 Comment
  RSA257090  Penstemon newberryi Christopher Davidson 1974-7-23 2497 Lassen Lassen Volcanic Nat'l Park. Rd to Juniper Lake. 2134 Comment
  JEPS7228  Penstemon newberryi var. newberryi W. L. Jepson 1910-6-11 4116 Lassen Cinder Cone 2133 Comment
  SEINET5323576 Image available Penstemon procerus var. procerus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  CHSC4267  Penstemon roezlii K. R. Stern 1967-6-24 2417 Lassen Murrer Meadow Road, ca. 3 mi. E of Eagle Lake Biological Station. 1554 Comment
  JEPS23794  Penstemon roezlii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7138 Lassen Sandy playa beside U.S. 395 one-fourth mi s of junction of road to Smoke Creek; s of junction of rd to Smoke Creek 1341 Comment
  NY650104  Penstemon roezlii J. T. Howell 1977-6-22 52402 Lassen North end of Eagle Lake 1585.0 Comment
  POM268103  Penstemon roezlii H. C. Cantelow 1941-5-22 s.n. Lassen North of Litchfield, US Hwy 395. Comment
  RSA668002  Penstemon roezlii Karl Vincent 1986-6-14 4321 Lassen Upper Long Valley, along E side of US 395, ca 5.5 mi N of jct US 70, ca 13.2 rd mi N of Bordertown and Nevada state line. 1463 Comment
  RSA39112  Penstemon roezlii Philip A. Munz 1947-5-19 11867 Lassen 27.7 miles south of Ravendale. 1311 Comment
  UCD13169  Penstemon roezlii Janet Browder 1973-6-3 92 Lassen Lassen CO. Day Camp in Eagle Lake Recreation Area. Elevation 5000 feet. 1524 Comment
  CAS-BOT-BC239494  Penstemon rydbergii var. oreocharis Lassen 1927 G. S. Crew 1927-7-1 49 Lassen Lassen National Forest, Bogard R.S. pasture 1712 Comment
  CAS-BOT-BC239496  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen .5 mi. north of turnoff to Heir [Herlong], Hwy 395, between Milford and Doyle 1280 Comment
  CHSC5915  Penstemon rydbergii var. oreocharis R. Gein 1946-6-24 Lassen McCoy Flat, west of Eagle Lake. 1645 Comment
  NY650948  Penstemon rydbergii var. oreocharis H. D. D. Ripley 1943-6-13 5706 Lassen 8 miles south of Milford 1859.3 Comment
  SBBG7130  Penstemon rydbergii var. oreocharis H. and M. Dearing 1938-7-1 2239 c Lassen 12 mi W of Susanville Comment
  UCD39133  Penstemon rydbergii var. oreocharis Beecher Crampton 1964-6-26 7081 Lassen 32 miles n.w. Susanville east end of Harvey Valley. 1694 Comment
  CHSC13894  Penstemon speciosus L. E. Ray 1967-6-24 33 Lassen Collected ca. 3 mi. se ELBS, above Upper Murrer Meadow. 1524 Comment
  CHSC4438  Penstemon speciosus K. R. Stern 1967-6-30 2449 Lassen West Central side of Eagle Lake. 1554 Comment
  JEPS28986  Penstemon speciosus Frances D. Payne 1929-7-12 86 Lassen ridge above Lost Lake (southern end Warner Range); , ridge above Lost Lake 2286 Comment
  JEPS95972  Penstemon speciosus Vernon H. Oswald and L. Ahart 1999-6-9 9747 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 5.2 mi west of Hwy. 395, 0.2 mi east of the RR crossing at Karlo: T31N R15E SE1/4 Sect. 7, 4440 ft elevation, sagebrush scrub, white volcanic ash substrate 1353 Comment
  NY660832  Penstemon speciosus F. W. Pennell 1940-6-9 25753 Lassen Route 395, 5 miles north of Madeline 1676.4 Comment
  RSA121810  Penstemon speciosus L. R. Short, J. Warren 1936-6-26 S- 357 Lassen Burges Spr. Exp. Range. 1845 Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC1520676  Penstemon speciosus Noel H. Holmgren and Patricia K. Holmgren 1980-7-5 9518 Lassen 19 km (12 mi) airline distance ese Ravendale (14.8 km (9.2 mi) e U.S. Highway 395 via Rye Patch Canyon, Upper Smoke Creek drainage); Upper Smoke Creek drainage 1680 Comment
  UC506982  Penstemon speciosus George A. Fischer and Irwin H. Johnson 1933-7-12 F 220 Lassen Lassen National Forest 1706 Comment
  CAS-BOT-BC239665  Penstemon sudans John Thomas Howell; Gordon H. True 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  JEPS84973  Penstemon sudans Barbara Ertter with Gary Schoolcraft 1987-6-16 7178 Lassen below ridge ca 1 mi w Hot Springs VABM (ne side Honey Lake); Skeedaddle Mountains, Honey Lake 1828 Comment
  NY661808  Penstemon sudans D. D. Keck 1935-6-25 3756 Lassen Susanville; just west of town Comment
  UC423647  Penstemon sudans David D. Keck 1930-7-23 953 Lassen 4 mi w Susanville; Sierra Nevada 1463 Comment
  NY763153  Penstemon venustus K. A. Vincent 1987-8-5 4500 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
  CAS-BOT-BC239691  Penstemon venustus Karl A. Vincent 1987-6-25 4436 Lassen Sierra Nevada, SE side of Fredonyer Butte; steep gravelly roadbank along N side of CA 36 ca 11.5 mi WSW of Susanville, E of Fredonyer Pass 1584 Comment
  CAS-BOT-BC140468  Peraphyllum ramosissimum James Moffitt 1941-5-14 s.n. Lassen Near Gilman Springs, 6 miles ssw. of Karlo 1417 Comment
  CHSC27656  Perideridia bolanderi Jerry Snodgrass 1978-7-11 54 Lassen Papoose Creek, SE corner of Eagle L. 1584 Comment
  CHSC7747  Perideridia bolanderi Beverly J. Wise 1969-5-18 114 Lassen 15.9 mi. East of Susanville on Las. Co. Rd. 216 of Las. Co. Rd. 215. 1554 Comment
  JEPS107969  Perideridia bolanderi Lowell Ahart, John Dittes 2005-6-1 11916 Lassen Along a small wash, on the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  RSA0092314  Perideridia bolanderi subsp. bolanderi Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31422 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  RSA723862  Perideridia bolanderi subsp. bolanderi David H. French 1968-6-3 2882 Lassen N of Honey Lake, W side of Highway 395, 7.4 miles NE of Litchfield Comment
  HSC103609  Perideridia parishii Thomas W. Nelson, Jane Nelson 1985-8-10 8003 Lassen Along north side of Silver Lake 1829 Comment
  CAS-BOT-BC423343  Peritoma platycarpa A. A. Heller 1938-6-23 15207 Lassen On the grade east of Litchfield, on U. S. Highway #395 1371 Comment
  CHSC13648  Persicaria amphibia M. S. Taylor 1974-7-10 312 Lassen Abundant in floating masses along w shore of Eagle Lake in vicinity of Grebe Nesting Area, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC13862  Persicaria amphibia F. T. Griggs 1973-4-25 100 Lassen Northwest shore of Black Mountain in Eagle Lake. Comment
  CHSC77223  Persicaria lapathifolia G. Schoolcraft 1996-9-11 2560 Lassen Lower end of Willow Creek below petroglyphs and above dam. 1341 Comment
  JEPS17742  Phacelia adenophora Rimo Bacigalupi with G. T. Robbins 1955-7-21 5419 Lassen along Smoke Creek Ranch rd 6.8 mi e jnct. with U.S. 395 1402 Comment
  RSA293371  Phacelia adenophora Reino Alava 1957-7-5 1136 Lassen 4.8 miles south of Ravendale on Highway 395. Comment
  SEINET3091787 Image available Phacelia adenophora Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway. 1387 Comment
  UC1226488  Phacelia adenophora Arthur Cronquist and Arthur H. Holmgren 1959-6-17 8479 Lassen along roadside 1 mi s Ravendale (40 mi ne of Susanville) 1615 Comment
  UC1483800  Phacelia adenophora G. Schoolcraft 1980-5-30 248 Lassen along Hwy 395 n Mud Flat; Secret Valley Area 1359 Comment
  UC735114  Phacelia adenophora Lincoln Constance 1946-7-3 3100 Lassen 16 mi w Termo; Grasshopper Valley 1676 Comment
  POM72872  Phacelia adenophora C. C. Bruce 1898-06 2198 Lassen Madeline Plains. Comment
  RSA83071  Phacelia adenophora Verne Grant, Alva Grant 1947-8-1 8225 Lassen On dike of irrigation ditch southwest of Madeline. Comment
  RSA22955  Phacelia bicolor Elmer I. Applegate 1934-5-4 8928 Lassen South of Secret Valley. Comment
  UC1609410  Phacelia glandulifera Vernon H. Oswald and Lowell Ahart 1993-6-14 5541 Lassen Eagle Lake Rd (Lassen A1) at Sandy Beach (w shore of lake, ca 2.0 mi ene of Spaulding Tract Rd (Rd 518, 33N89), n side of rd); Eagle Lake 1566 Comment
  HSC30187  Phacelia hastata D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19262 Lassen Harvey Valley near Cone Springs Comment
  RSA0093392  Phacelia hastata var. hastata Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31421 Lassen Along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1732 Comment
  UC773947  Phacelia heterophylla subsp. virgata L. R. Short and Wm. Gansberg 1936-7-9 S- 478 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1795 Comment
  RSA638996  Phacelia heterophylla subsp. virgata Michael A. Vincent 1999-6-9 8585 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
  CHSC30050  Phacelia humilis J. D. Prouty 1978-7-27 2 Lassen Black Mtn Rd., SE of Eagle Lake Field Station on Eagle L., atop fault scarp. 1621 Comment
  UC773945  Phacelia humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  SD61075  Phacelia humilis Darley F. Howe 1964-8-1 3914 Lassen Modoc Natl. Forest, Warner Mts., 4.8 mi. from Harvey Creek on ridge road. 2133 Comment
  RSA516986  Phacelia humilis var. humilis Barbara Ertter, Gary Schoolcraft 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak. 2195 Comment
  CHSC5263  Phacelia imbricata 1944-7-6 Lassen Eagle Lake. Harvey Valley. 1694 Comment
  CHSC106571  Phacelia linearis Zachary Garcia 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC33362  Phacelia linearis Wayne O. Baum 1971-7-5 71 -17 Lassen E. slope of Gallatin Peak. 1981 Comment
  RSA712931  Phacelia linearis L. P. Janeway 2005-7-4 8463 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  SBBG64994  Phacelia linearis S. W. Hutchinson -Jun-1925 395 Lassen Eagle Lake 1554 Comment
  RSA337277  Phacelia lutea Noel Holmgren, Patricia K. Holmgren 1980-7-3 9473 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi.) west of U.S. Highway 395 from a turnoff 10.3 km (6.4 mi.) south of Madeline 1616 Comment
  NY1056433  Phacelia lutea var. glandulifera A. Tiehm 1988-6-2 11701 Lassen South side of Shaffer Mountain, 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway 1387 Comment
  SEINET5518985  Phacelia lutea var. lutea M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 86- 21 -1 Lassen Smoke Creek Road, east of HWY 395 1448 Comment
  OBI75900  Phacelia racemosa Anthony Baniaga 2011-8-1 477 Lassen Lassen Natl Forest. SW Swain Meadow, near marker tree #27. Swain Mtn quad T30N R8E sec 34 NE of NW 1764 Comment
  CHSC29886  Phacelia ramosissima var. eremophila Robin L. Ondricek 1978-8-2 109 Lassen In moss covered basalt on top of the ridge se of ELFS. 1609 Comment
  SEINET7356303  Phacelia ramosissima var. eremophila Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9508 Lassen Observation Peak, south side of mountain. 18 km (11 mi) airline distance east of Ravendale.; 0 1890 Comment
  POM203780  Phacelia ramosissima var. eremophila J. T. Howell 1934-6-10 11873 Lassen Janesville Comment
  CAS-BOT-BC179912  Phacelia thermalis Peter H. Raven; Otto T. Solbrig 1958-6-17 13297 Lassen Hwy 395, 4.8 miles south of Madeline Comment
  NY1057981  Phacelia thermalis N. H. Holmgren 1980-7-3 9464 Lassen Madeline Plains, along U.S. Highway 395, 5.6 km (3.5 miles) south of Madeline. 1620 Comment
  RSA38633  Phacelia thermalis P. A. Munz 1947-5-19 11878 Lassen Highway 395, 4 miles south of Madeline. Comment
  SJSU14072  Phacelia thermalis W. Savage 1964-6-30 338 Lassen by Hwy 338, 11 mi N of Susanville Comment
  CAS-BOT-BC265822  Phalaris arundinacea John Thomas Howell 1974-7-8 50477 Lassen Susanville, Sierra Nevada 1295 Comment
  UC60737  Phleum alpinum M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  UC1100411  Phleum pratense Malcolm A. Nobs and S. Galen Smith 1949-7-21 1056 Lassen 4 mi n Madeline Comment
  CAS-BOT-BC232852  Phlox David D. Keck; J. Clausen 1935-6-24 3744 Lassen 2 miles S of Ravendale Comment
  CHSC68898  Phlox diffusa Vernon Oswald; Lowell Ahart 1997-6-24 8638 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
  JEPS69955  Phlox diffusa Milo S. Baker 1890-1 Lassen Milford Comment
  UC106950  Phlox diffusa T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  RSA0035915  Phlox gracilis Lowell A. Ahart, John Dittes 2008-6-20 14929 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
  UC773907  Phlox gracilis unknown 1936-5-7 S- 343 Lassen Burgess Spring Experimental Range Lassen Forest 1737 Comment
  CHSC108023  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2011-6-20 17506 Lassen About 40 yards north of the dirt road, about 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC91202  Phlox speciosa subsp. occidentalis Lowell Ahart; John Dittes 2005-6-2 11928 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
  UC23964  Phlox speciosa subsp. occidentalis M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mts. Comment
  HSC17069  Phlox stansburyi Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  CDA40284  Phlox stansburyi T. C. Fuller 1963-6-11 10662 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CHSC117545  Phoradendron bolleanum Lowell Ahart; John Dittes 2016-7-13 21136 Lassen 5 yards south of the gate to the pond, along Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC58236  Phyllodoce breweri Ella Dales Cantelow 1941-9-13 3599 Lassen Mt. Lassen Nat. Park. Comment
  PASA1593  Phyllodoce breweri Margaret Stason 1932-6-23 Lassen near mineral Comment
  CHSC6220  Pinus contorta subsp. murrayana P. Balch 1955-7-3 Lassen Eagle Lake Resort. 1615 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
  SEINET10530757  Pinus jeffreyi Jeffrey Huber 1971-6-2 Huber 141 Lassen 6 mi N of Halleluja Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  SEINET11610645  Pinus lambertiana David Charlet 1996-7-8 2291 Lassen Diamond Mts; Sierra Nevada Janesville Grade, Great Basin drainage (Honey Lake) 1859 Comment
  SEINET10859539  Pinus lambertiana Paulson 1970-7-21 PAULSON s.n. Lassen 28N 6 E-19 Comment
  CDA601  Pinus washoensis Gordon Leppig, Sylvia Leppig and Juli & Kai Neander 1998-8-18 1065 Lassen Modoc National Forest, Blue Lake Campground Comment
  CAS-BOT-BC227995  Plagiobothrys David D. Keck; J. Clausen 1935-6-24 3731 Lassen 10 miles S of Likely (Modoc County) 1464 Comment
  JEPS28716  Plagiobothrys cognatus George W. Gillett 1957-7-29 954 Lassen Snag Lake Lassen Volcanic National Park (shoreline near e inlet) 1850 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
  UC526162  Plagiobothrys cognatus John Thomas Howell 1934-6-10 11890 Lassen 15 mi. n. Susanville (on rd. to Horse Lake) Comment
  JEPS124383  Plagiobothrys cusickii Lowell Ahart, John Dittes 2015-7-13 20305 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  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
  CHSC66237  Plagiobothrys hispidulus Vernon H. Oswald; Lowell Ahart 1996-6-24 7861 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 interface between meadow and forest on the W side of the meadow ca. 0.4 mi S of the cabins. 1633 Comment
  JEPS28658  Plagiobothrys hispidulus George W. Gillett 1957-7-21 860 Lassen 300 yd n trail summit (Juniper Lake-Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  CHSC110772  Plagiobothrys hispidus Dean Wm. Taylor 2012-7-18 21274 Lassen Pumice flat nestled in the cones about 2 miles South of the south end Poison Lake (along Highway 44). 1783 Comment
  UC25081  Plagiobothrys hispidus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS107444  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  UC1523814  Plagiobothrys leptocladus Gary Schoolcraft 1983-6-20 1010 Lassen Mud Flat , 31-15-22 (31-15-22) 1341 Comment
  JEPS121266  Plagiobothrys mollis Lowell Ahart, John Dittes 2013-7-23 18898 Lassen About 50 yards W of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  RSA128304  Plagiobothrys mollis P. H. Raven, Otto T. Solbrig 1958-6-17 13258 Lassen Along U.S. Hwy 395, 7.1 miles W of Standish. Comment
  JEPS114692  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
  CHSC117214  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes 2016-6-7 20978 Lassen Strand of the pond, about 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC117209  Plagiobothrys tenellus Lowell Ahart; John Dittes 2016-6-7 21006 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  RSA0017432  Plantago lanceolata Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC136632  Platanthera A. M. Vollmer; L. Beane 1953-7-1 74 Lassen Field redacted by CAS, contact the data manager for more information 1554 Comment
  JEPS64411  Platanthera leucostachys Brown and Wieslander 1922-7-17 21 Lassen Martin Sprs. Eagle Lake Comment
  CHSC117208  Plectritis macrocera Lowell Ahart; John Dittes 2016-6-7 21005 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS118449  Plectritis macrocera Lowell Ahart, John Dittes 2011-6-20 17494 Lassen Meadow, about 30 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SEINET8658736  Plectritis macrocera C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  SEINET10550970  Plectritis macrocera Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3116 Lassen 6 miles n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon Pine, jeffery pine along high ridge and in sandy wash. 1402 Comment
  CAS-BOT-BC326715  Pleiacanthus spinosus M. S. Taylor 1982-8-19 5020 Lassen Along old RR grade south of and paralleling Highway 70 just southeast of Beckwourth Pass on Plumas-Lassen county line 1584 Comment
  CHSC110312  Pleiacanthus spinosus L. P. Janeway; B. Castro 2012-7-1 10922 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  RSA788671  Pleiacanthus spinosus J. R. Shevock, Barbara Ertter 1986-7-20 11738 Lassen Along U.S. highway 395 at Red Rock Road. 1500 Comment
  CAS-BOT-BC254943  Poa bulbosa Clarence R. Quick 1962-6-17 62 -29 Lassen On Western Pacific RR, S of Halls Flat on Susanville-Pittville road at Blacks Mountain Experimental Forest Headquarters 1706 Comment
  SEINET10517067  Poa bulbosa Billy Joe Cox 1971-6-2 Cox 2990 Lassen 6 mi N of Hallelujah Jct. on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD90921  Poa cusickii L. D. Whitney 1935-6-26 s.n. Lassen Near Fruit Grower's Supply Co., Camp 10. Comment
  UCR119183  Poa cusickii Beecher Crampton 1960-6-18 5708 Lassen Warner Mountains, 6 miles southeast of Jess Valley, 3 miles east of Blue Lake. Southern edge of mountains. 2134 Comment
  CHSC101048  Poa cusickii subsp. cusickii John Dittes 2008-5-22 1525 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 465 feet east of intersection of Hwy 139 and FS Road 36N02; alluvial terrace and toe-slope on northeast side of Willow Creek. 483 Comment
  CAS-BOT-BC247323  Poa pratensis Louella Bass 1973-5-25 EU 45 Lassen Elysian Valley 1325 Comment
  UCD91978  Poa pratensis L. Whitney 1933-8-1 s.n. Lassen Slate Creek. 1920 Comment
  SEINET10867718  Poa pratensis Katherine L. Morris 1973-5-25 Morris 243 Lassen Collected 7.6 mi NW of Jct of Hwy 36 & 44 on Hwy 44, in an area of yellow pine and incense cedar; very moist area. Comment
  CHSC99523  Poa pratensis subsp. pratensis Lowell Ahart; John Dittes 2008-6-22 15020 Lassen On the road sides of the levee, about 100 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC604682  Poa pratensis subsp. pratensis Farris Farris 1935-6-15 Lassen Susanville 1310 Comment
  CAS-BOT-BC255017  Poa secunda J. D. Schoeller 1928-5-27 406 Lassen Laufman Canyon Summit 1889 Comment
  CAS-BOT-BC236250  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia Comment
  CAS-BOT-BC237715  Poa secunda subsp. juncifolia J. B. Davy 1897-6-1 3319 Lassen Honey Lake Valley Comment
  CAS-BOT-BC247051  Poa secunda subsp. juncifolia John Thomas Howell 1973-7-10 49777 Lassen Fredonyer Pass 1737 Comment
  CAS-BOT-BC251087  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49460 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC39629  Poa secunda subsp. juncifolia J. Burtt Davy Jun 17 1897-Jun 24 1897 3316 Lassen Honey Lake Valley Comment
  UCD92243  Poa secunda subsp. juncifolia Beecher Crampton 1960-6-18 5713 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 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
  CAS-BOT-BC236181  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49196 Lassen Elysian Valley NW of Janesville 1325 Comment
  UC1024838  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3218 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132878  Poa secunda subsp. secunda Robert W. Gardner 1939-6-28 G- 31 Lassen Little Harvey Valley; Halls Flat Quadrangle Comment
  UC1132882  Poa secunda subsp. secunda A. Simontacchi 1940-5-17 747 Lassen 1.1 mi ssw Dixie Spring; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1142953  Poa secunda subsp. secunda A. L. Hormay 1941-6-26 37 Lassen Bogard Ranger Station, Pine Creek Bogard Ranger Station; Lassen Nat'l Forest 1706 Comment
  HSC68792  Poa wheeleri Gary Schoolcraft 1979-7-3 112 Lassen 4.3 mi. up Observational Lookout Rd. from Horne Ranch Rd. 2134 Comment
  UC1143038  Poa wheeleri L. R. Short 1936-4-30 S- 341 Lassen Burgess Spring Experimental Range; Lassen Nat'l Forest 1859 Comment
  UC773972  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experiment Range; Lassen Forest 1767 Comment
  JEPS17614  Polemonium occidentale Rimo Bacigalupi 1955-7-20 5404 Lassen on grade 2.3 mi s Patterson Ranger Station ([and 0.8 mi s of Lassen-Modoc county line], meadowy spots along East Creek, southern end of the Warner Mountains); Modoc National Forest, Warner Mountains, East Creek 2011 Comment
  UC449772  Polemonium occidentale Franklin P. Nutting 1894-7-28 Lassen Bridge Creek Bridge Creek (Northern California) Comment
  CAS-BOT-BC263248  Polemonium pulcherrimum var. pulcherrimum R. Stubbs 2010-8-9 019 Lassen Dixie Mountain Peak Lookout. Only seen down trail from lookout towards bathroom on the south slope 2516 Comment
  CAS-BOT-BC74170  Polyctenium fremontii Arnold Tiehm; Margaret Williams; Jan Nachlinger 1988-6-2 11703 Lassen 6.6 road miles north of the Wendel Road on highway 395 from Susanville to Alturas, along the highway. 1347 Comment
  SEINET3197107 Image available Polyctenium fremontii var. confertum Gary Schoolcraft 1984-7-9 1287 Lassen South of Fillman Road, 3.8 miles west of Hwy 395 1610 Comment
  RSA0004885  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  UC1136918  Polygonum George A. Fischer, Irwin H. Johnson 1933-7-12 F 192 Lassen Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley 1694 Comment
  UC507010  Polygonum George A. Fischer, Irwin H. Johnson 1933-7-12 F 192 Lassen Lassen National Forest, (Dry Lake), Grass Valley Dry Lake; Lassen National Forest, , Grass Valley 1694 Comment
  SEINET10937589  Polygonum amphibium var. stipulaceum Mary Susan Taylor 1974-1 Taylor 312 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS114703  Polygonum arenastrum Lowell Ahart, John Dittes 2008-6-20 14931 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-BC419767  Polygonum argyrocoleon John Thomas Howell 1976-7-20 52030 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC117541  Polygonum aviculare Lowell Ahart; John Dittes 2016-7-13 21133 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
  CHSC99299  Polygonum aviculare Lowell Ahart; John Dittes 2008-6-20 14931 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-BC414490  Polygonum douglasii John Thomas Howell 1974-7-10 50562 Lassen Elysian Valley 1325 Comment
  HSC81186  Polygonum douglasii Thomas W. Nelson, Jane P. Nelson 1980-7-6 6040 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  HSC100804  Polygonum douglasii subsp. spergulariiforme Lowell Ahart, John Dittes 2010-7-31 16979 Lassen 100 yd. NE of where the road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, 8.4 (air) mi. SE of Adin. 1521 Comment
  UC6681  Polygonum douglasii subsp. spergulariiforme M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  CHSC59096  Polygonum minimum Vernon H. Oswald; Lowell Ahart 1992-8-25 5178 Lassen Lassen Volcanic National Park. Cameron Meadow between Juniper and Snag Lakes. Locally abundant in an opening on the brushy edge of the meadow. 1950 Comment
  HSC31363  Polygonum parryi D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19196 Lassen Harvey Valley near Cone Springs Comment
  UC1603212  Polygonum polygaloides J. Guardino 1993-5-22 171 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  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
  JEPS114745  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  JEPS120876  Polygonum polygaloides subsp. confertiflorum Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18732 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS87370  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-8-3 5748 Lassen e Silver Lake (just e of Caribou Wilderness, ca 13 air mi n of Lake Almanor); Cooper Swamp 1932 Comment
  UC1609321  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald and Lowell Ahart 1993-6-28 5593 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  CHSC99128  Polygonum polygaloides subsp. kelloggii Lowell Ahart; John Dittes 2008-6-19 14897 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
  JEPS97417  Polygonum ramosissimum Vernon H. Oswald and L. Ahart 1995-6-19 6880 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  CAS-BOT-BC420157  Polygonum sawatchense subsp. sawatchense Clarence R. Quick 1961-6-21 61 -18 Lassen Adjacent to Road 21, Blacks Mountain Expermental [Experimental] Forest, northeast of Lassen Peak 1798 Comment
  CAS-BOT-BC420977  Polygonum spergulariiforme Clarence R. Quick 1964-7-29 64 -87 Lassen Blacks Mt. Experimental Forest 1798 Comment
  CHSC117532  Polypogon monspeliensis Lowell Ahart; John Dittes 2016-7-3 21147 -A Lassen Scattered along the west edge of the pond, 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC93665  Polypogon monspeliensis Lowell Ahart; John Dittes 2005-6-2 11967 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  JEPS121244  Polypogon monspeliensis Lowell Ahart, John Dittes 2013-7-22 18874 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC13799  Populus tremuloides Cathy Crittenden 1970-7-9 41 Lassen Antelope lookout. 2316 Comment
  JEPS114988  Porterella carnosula Lowell Ahart, John Dittes 2008-6-20 14963 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS28708  Porterella carnosula George W. Gillett 1957-7-29 938 Lassen near w end Widow Lake (Widow Lake, Lassen Volcanic National Park); Lassen Volcanic National Park, Widow Lake 2072 Comment
  UC803937  Porterella carnosula G. L. Stebbins Jr. 1949-8-6 4002 Lassen edge Feather Lake (between Susanville and McArthur Mud Flats) 1676 Comment
  SEINET10460817  Porterella carnosula Whitney 1933-8-21 WHITNEY s.n. Lassen In a water-hole near Hall's Flat, 25 miles W. NW. of Eagle Lake, Lassen National Forest Comment
  SEINET10460823  Porterella carnosula Nutting NUTTING s.n. Lassen Flat near Eagle Lake Comment
  SEINET10460835  Porterella carnosula Rimo Bacigalupi 1957-6-28 Bacigalupi 6023 Lassen In rich black wet soil in ditch along road, Highway 395 in Madeline Plains 3.1 miles south of Madeline 1615 Comment
  SEINET10460844  Porterella carnosula Baker 1894-7-21 Baker s.n. Lassen Near Eagle Lake. 1524 Comment
  JEPS103226  Potamogeton nodosus G. Schoolcraft 1996-9-11 2563 Lassen Willow Creek below petroglyphs above dam 1341 Comment
  UC1100075  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-8-1 8243 Lassen e end of Tule Lake Comment
  CHSC55814  Potamogeton richardsonii Vernon H. Oswald 1991-9-23 4876 Lassen Lassen Volcanic National Park. Butte Lake in the northeast corner of the park. At the first spit of land extending into the lake south of its outlet. 1841 Comment
  UC1100087  Potamogeton zosteriformis Verne Grant, Irving Schneider 1947-8-24 8272 Lassen nw shore of Blue Lake (Northern Lassen County) Comment
  CHSC6258  Potentilla biennis 1944-6-21 Lassen Near Eagle Lake shore line. 1584 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
  CAS-BOT-BC143111  Potentilla breweri M. S. Baker; Frank Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  UC1776675  Potentilla breweri G. Schoolcraft 1994-8-1 2390 Lassen About 2 miles W of Boot Lake 2456 Comment
  CHSC60395  Potentilla flabellifolia Mary Ann Showers 1992-6-13 2553 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC27741  Potentilla glandulosa subsp. ashlandica Cindy Prouty 1978-7-5 3 Lassen E shore of Mahogany L., S of Eagle L. Meadow. 2060 Comment
  JEPS107940  Potentilla gracilis var. elmeri Lowell Ahart, John Dittes 2005-6-1 11854 Lassen Long Valley, on the west side of the poor dirt road, about 1/2 mile west of Scott Road, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CHSC5048  Potentilla gracilis var. fastigiata L. B. Barlow 1967-7-1 80 Lassen 2 mi. west Murrer's Ranch turnoff, 14.9 mi. north of Susanville, Highway 139. 1463 Comment
  UC1136906  Potentilla gracilis var. fastigiata L. R. Short and W. McNulty 1936-6-17 S- 443 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1767 Comment
  CHSC89732  Potentilla millefolia L. P. Janeway 2004-6-26 8160 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC506926  Potentilla millefolia George A. Fischer and Irwin H. Johnson 1933-7-14 F. 240 Lassen Patterson R.S. Lassen National Forest, Patterson R.S. 1737 Comment
  CAS-BOT-BC158517  Potentilla millefolia 1927-6-10 7 Lassen Lassen National Forest. Norval Flat 2051 Comment
  UC1191492  Potentilla rivalis Verne Grant, Irving Schneider 1947-8-1 8236 Lassen e end of Tule Lake Comment
  CHSC75533  Poteridium annuum Vernon H. Oswald; Lowell Ahart 1999-6-9 9760 Lassen Between Westwood and Susanville on Hwy 36 1.3 mi east of Fredonyer Pass. Roadside. 1645 Comment
  SDSU9858  Primula tetrandra D. F. Howe 1964-7-31 3899 Lassen Warner Mtns. Modoc National Forest. 1890 Comment
  CAS-BOT-BC159777  Prunus andersonii R. F. Thorne; C. W. Tilforth 1969-9-6 39252 Lassen Beckwourth Pass, Plumas-Lassen Co. line county 1589 Comment
  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
  CHSC118852  Prunus andersonii L. P. Janeway; B. Castro 2015-6-5 11767 Lassen Great Basin, Modoc Plateau. Along the road from the south endof Surprise Valley to Tuledad Canyon, 12.1 road-km south of Surprise Valley Road; 1.8 air-km east of Newland Reservoir/Bare Creek. 1959 Comment
  SJSU13984  Prunus andersonii N. A. Hopkins 1988-5-16 1400 Lassen Scott Rd by Long Valley Cr c. 3 mi N of Hwy 70 1432 Comment
  OBI10074  Prunus andersonii H. E. McMinn 1932-8-5 2969 Lassen Susanville to Reno Comment
  UCD113178  Prunus emarginata Donna Allen 1977-4-20 s.n. Lassen Jamesville grade 1 mile off Highway 89. Comment
  UCD113460  Prunus fasciculata T. I. Storer 1932-7-18 s.n. Lassen 4.5 miles northwest of Doyle. 1310 Comment
  UCR17286  Prunus virginiana Frank C. Vasek 1975-7-11 750711- 38 Lassen Modoc National Forest, Hayden Hill Road c. 0.75-1.0 mi SW of Calif. Hwy 139 1829 Comment
  CAS-BOT-BC154774  Prunus virginiana var. demissa Louella Bass 1973-5-25 38 Lassen Elysian Valley 1325 Comment
  CHSC6286  Prunus virginiana var. demissa R. Clicquennoi 1967-7-1 22 Lassen 4 mi s of Eagle Lake Biological Station, on Gallatin Beach Rd. 1554 Comment
  CHSC66398  Prunus virginiana var. demissa Vernon H. Oswald; Lowell Ahart 1996-6-17 7767 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of Hwy. 36 ca. 0.2 mi E of the 7 mile post. 1432 Comment
  CHSC7721  Prunus virginiana var. demissa Beverley J. Wise 1969-5-18 192 Lassen 18.2 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. On canyon wall. 1554 Comment
  JEPS107870  Prunus virginiana var. demissa Lowell Ahart, John Dittes 2005-6-2 11931 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  JEPS44919  Prunus virginiana var. demissa W. L. Jepson 1918-8-3 7800 Lassen Honey Lake Valley 1219 Comment
  UC773874  Prunus virginiana var. demissa L. R. Short, Wm. Gansberg 1936-7-3 S 466 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1847 Comment
  CAS-BOT-BC239797  Pseudoroegneria spicata John Thomas Howell 1934-6-14 12166 Lassen Near Lost Lake, Warner Mts. 2438 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
  CHSC60878  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1993-7-8 5671 Lassen Halls Flat Rd. (33N18), 1.4 mi SSW of Pittville Rd. (Lassen 111, 36N01), ca. 5.4 mi (air) NW of Poison Lake. On the W side of the road. 1694 Comment
  UC1137705  Psilocarphus brevissimus var. brevissimus A. Simontacchi 1940-6-4 804 Lassen 14.8 mi w Harvey Mtn. Lookout; Lassen National Forest, Halls Flat Quad. 1783 Comment
  POM40287  Psilocarphus elatior Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SBBG63215  Psilocarphus tenellus E. Rockwell -Jun-1925 221 Lassen Eagle Lake 1554 Comment
  CDA27774  Psoralidium lanceolatum S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  JEPS109942  Psoralidium lanceolatum Dean W. Taylor 2004-5-11 19063 Lassen Calneva Lake; southern end of the lakebed. 1219 Comment
  UC725376  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen about 2 miles east of Westwood 1524 Comment
  CAS-BOT-BC239792  Puccinellia distans G. Schoolcraft 1993-6-1 2270 Lassen Coyote Spring 1463 Comment
  CDA42960  Puccinellia lemmonii L. Ahart, John Dittes, Todd Sloat 2013-6-9 18788 Lassen On the south side of the road, on the south side of McArthur Diversion Canal, 0.32 mile east of Tule River, 2.8 air-miles northwest of McArthur, Fall River Valley, McArthur Swamp. Comment
  RSA647519  Puccinellia nuttalliana Marion P. Harthill 1972-6-17 801 Lassen Standish. Comment
  UCD93431  Puccinellia nuttalliana P. B. Kennedy 1923-6-1 s.n. Lassen edge of Honey Lake. Comment
  CHSC13644  Purshia tridentata M. S. Taylor 1974-6-25 260 Lassen Surrounding meadow, ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CAS-BOT-BC147818  Purshia tridentata var. tridentata Clarence Quick 1963-7-12 63 -31 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  CAS-BOT-BC147819  Purshia tridentata var. tridentata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16321 Lassen Along California Highway 36, about 6 miles W of Susanville Comment
  HSC19580  Purshia tridentata var. tridentata Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  HSC79989  Purshia tridentata var. tridentata William Rothstrom 1975-6-9 Lassen Johnstonville, 1/4 mi. S of Hwy. 395, W of airport. 1265 Comment
  UC1167550  Purshia tridentata var. tridentata E. C. Nord 1958-7-12 108 Lassen near Janesville (near Plumas National Forest) 1371 Comment
  UC467830  Purshia tridentata var. tridentata Franklin P. Nutting Lassen Pine Creek Comment
  UC412675  Pyrola picta Franklin P. Nutting Jul 1930 Lassen Silver Lake Comment
  OBI75873  Pyrola picta Anthony Baniaga 2011-8-10 496 Lassen Lassen Natl Forest. About 1/4 mi SE of Swain Mdw, S of Robbers Ck. Swain Mtn quad T29N R8E sec 35 NE of SW 1721 Comment
  POM39973  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UCR163275  Pyrrocoma hirta Jim Andre 1993-6-29 1408 Lassen Madeline Plains about 2 miles south of Madeline along Hwy 395 1616 Comment
  UC1136851  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range 1783 Comment
  UC1143034  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1783 Comment
  RSA715949  Pyrrocoma lucida L. P. Janeway 2005-7-31 8512 Lassen Northern High Sierra Nevada. Diamond Mountains; Head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  UC296045  Pyrrocoma racemosa var. paniculata H. M. Hall 1925-8-31 12214 Lassen Amedee Honey Lake Valley Comment
  CHSC5250  Quercus kelloggii P. Balch 1955-7-25 Lassen Eagle Lake. Roop Mt. Rd., 5 mi from Susanville. 1828 Comment
  UCD46733  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen Southwest of Susanville on Gold Run Road, Lassen County. 1341 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
  CHSC8743  Ranunculus aquatilis var. capillaceus S. Chulasmai 1966-5-13 35 Lassen Vernal pool, (Johnstonville). Comment
  UC1537334  Ranunculus aquatilis var. capillaceus Gordon H. True Jr. 1936-6-21 515 Lassen Honey Lake Valley; in deeper sloughs 1219 Comment
  CHSC6246  Ranunculus canus W. Vinyard 1946-6-13 Lassen Pine Creek, Eagle Lake. 60 Comment
  JEPS55056  Ranunculus cymbalaria var. saximontanus W. L. Jepson 1918-8-2 7768 Lassen Beckwith Pass; below spring 1463 Comment
  JEPS28454  Ranunculus flammula George W. Gillett 1957-7-22 872 Lassen Snag Lake Lassen Volcanic National Park (s shore) 1850 Comment
  CHSC61175  Ranunculus glaberrimus var. ellipticus Vernon H. Oswald; Lowell Ahart 1993-5-12 5383 Lassen Forest Rd. 32N08 to Crater Lake, 0.5 mi NE of Hwy. 44, between A21 (to Westwood) and Poison Lake, along Pine Creek. 1737 Comment
  CHSC7184  Ranunculus glaberrimus var. ellipticus Lynn R. Thomas 1969-4-17 100 Lassen Ca. 100 yds. w of Rice Canyon Rd., down hillside and just across small creek; 5 mi n of junction with 'Back road to Litchfield;' ca. 12 mi e of Susanville. 1310 Comment
  UC1143005  Ranunculus occidentalis August L. Hormay 1934-5-15 Lassen turnoff to Willow Spring Lassen National Forest (n of Hall's Flat) 1706 Comment
  NY494769  Ranunculus occidentalis var. ultramontanus W. W. Eggleston 1911-5-29 6759 Lassen Vicinity of Doyle Station 1290 Comment
  CDA24351  Ranunculus sceleratus var. multifidus D. L. Haws 1974-5-3 Lassen Railroad right-of-way near Susanville. 0 Comment
  CAS-BOT-BC362887  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen On the west side of Eagle Lake, two miles N. of the Eagle Lake Resort on service road #33N01 Comment
  CDA7609  Ratibida columnifera G. D. Barbe 1974-8-2 1939 Lassen At the north end of the Glenn-Eagle airstrip, southwest corner of Eagle Lake, 0.8 mile north of Eagle Lake Resort. 0 Comment
  UC1587100  Rhaponticum repens G. Schoolcraft 1991-7-31 2203 Lassen just n of Hall Spring; Shinn Mts. 1706 Comment
  JEPS124781 Image available Rhus aromatica C. Meek 1969-7-9 85 Lassen On south facing slope overlooking the Pitt Gorge off Hi #299; 2 mi West of Fall River Mills. Comment
  CHSC7759  Ribes aureum Beverley J. Wise 1969-5-4 101 Lassen 0.5 mi. south on Las. Co. Rd. 305 off junction of Hwy 395. 1249 Comment
  CAS-BOT-BC225883  Ribes cereum B. Bartholomew; B. Anderson 1988-7-22 4503 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountains. 2080 Comment
  CHSC23566  Ribes cereum W. O. Baum 1971-6-28 40 Lassen E slope of Gallatin Peak at edge of fire trail. 1920 Comment
  JEPS28678  Ribes cereum George W. Gillett 1957-7-26 916 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  CHSC68749  Ribes cereum var. cereum Vernon H. Oswald; Lowell Ahart 1997-5-27 8515 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
  UC699688  Ribes hudsonianum var. petiolare J. L. Mielke, J. W. Kimmey 1941-6-29 Lassen Silver Creek (Lost Lake) Warner Mountains, Modoc National Forest Comment
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Jul 19 2010
  SEINET10871346  Ribes montigenum Mary Susan Taylor 1974-5-4 Taylor 218 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  SEINET5339729  Ribes nevadense C. G. Gulling 1905-1 1537 Lassen Big Meadows Comment
  RSA0022881  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile east of Fredonyer Pass. 1707 Comment
  SEINET10838520  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 309 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC186151  Ribes roezlii var. roezlii Brighton C. Cain 1925-8-24 96 Lassen Mt. Lassen Volcanic National Park 1 mi. below Drakesbad 1645 Comment
  CHSC13639  Ribes velutinum M. S. Taylor 1974-6-24 288 Lassen Abundant ca. 50 ft w of Eagle Lake Field Station ca. 13 mi nw of Susanville. 1524 Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 Comment
  JEPS87425  Ribes velutinum Vernon H. Oswald and Lowell Ahart 1993-6-14 5547 Lassen ca 2.0 m ENE Spaulding Tract Rd. (Rd. 518,33N89) (dunes on n side of Eagle Lake Rd. (Lassen Al) at Sandy Beach on the W shore of lake); Eagle Lake 1566 Comment
  OBI75884  Ribes velutinum Anthony Baniaga 2011-7-1 414 Lassen BLM. Fort Sage MTs OHV area, E of Doyle. Quad 1638 Comment
  UC773883  Ribes velutinum L. R. Short and Wm. Gansberg 1936-7-9 S- 481 Lassen Burgess Spring Experiment Range Lassen Forest 1783 Comment
  UCR248242  Ribes velutinum J. R. Keck Jr. 1977-8-10 s.n. Lassen Lassen National Forest, near Puls Camp east of Blacks Mountain 1829 Comment
  RSA0023962  Ribes velutinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  UC1523807  Ribes viscosissimum Gary Schoolcraft 1982-8-9 860 Lassen near Susanville; Diamond Mtn. 2011 Comment
  SD131593  Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen south side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from susanville to Alturas west of the highway 1385 Comment
  SEINET2054605 Image available Rigiopappus leptocladus Arnold Tiehm, Margaret Williams, Jan Nachlinger 1988-6-2 11700 Lassen South side of Shaffer Mt., 3.4 road miles North of the Wendel road on highway 395 from Susanville to Alturas, west of highway. 1386 Comment
  CDA8540  Rigiopappus leptocladus T. C. Fuller 1963-6-1 10624 Lassen Road to Susanville, 2.2 miles south of Pittville. 0 Comment
  UC10716  Rorippa curvisiliqua M. S. Baker and F. Nutting 1894-6-1 Lassen Dixey Mts. Comment
  CHSC101064  Rorippa curvisiliqua var. orientalis John Dittes 2008-5-22 1527 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.5 air miles east of Hayden Hill, ca 480 feet southeast of intersection of Hwy 139 and FS Road 36N02; channel of Willow Creek. 482 Comment
  CHSC113059  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2013-7-22 18855 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117291  Rorippa curvisiliqua var. orientalis Lowell Ahart; John Dittes 2016-7-13 21115 Lassen 100 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CDA25121  Rorippa nasturtium-aquaticum Gordon Leppig 1998-7-12 959 Lassen Northern California Peatlands; Modoc National Forest, Blue Lake Ranch. Comment
  CHSC36490  Rorippa nasturtium-aquaticum Theresa Costa 1982-6-4 36 Lassen Along Willow Creek in Murrers Upper Meadow. Comment
  JEPS127167  Rorippa palustris subsp. palustris Lowell Ahart, John Dittes 2016-7-15 21218 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCD115377  Rorippa sinuata Verne Grant; Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting aera on west end of Section 19 on Madeline Plain. Comment
  CHSC66400  Rosa woodsii subsp. ultramontana Vernon H. Oswald; Lowell Ahart 1996-6-17 7773 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the edge of the trail at the bridge spanning the Susan River on the N side of Hwy. 36. 1432 Comment
  JEPS106500  Rosa woodsii subsp. ultramontana L. P. Janeway 2004-6-26 8171 Lassen High Cascade Range. Along Road 33N15 (Lassen Trail) between Patterson Flat and Aspen Flat; Blacks Mountain Experimental Forest 1790 Comment
  UC1070543  Rumex H. S. Yates 1936-8-11 6057 Lassen near Red Rock; Sierraville Quad. 1341 Comment
  CHSC7737  Rumex crispus Beverley J. Wise 1969-5-23 80 Lassen 35.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  UC1536793  Rumex crispus Gordon H. True Jr. 1939-7-6 1037 Lassen George Bailey Ranch Honey Lake Valley Comment
  UCD101331  Rumex lacustris Robbins; Raynor 1943-6-1 s.n. Lassen Madeline. Comment
  UC452567  Rumex paucifolius Franklin P. Nutting Lassen Big Valley Comment
  JEPS120880  Rumex salicifolius Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18774 Lassen About 300-400 yards NW of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  CHSC67689  Rumex salicifolius var. lacustris James D. Jokerst 1983-7-25 1891 Lassen Madeline Plains W of Termo. Comment
  UC1520656  Rumex salicifolius var. lacustris Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9475 Lassen 0.7 mi w (1.1 km w) U. S. Hwy 395 (a valley road, from a turnoff 6.4 mi (10.3 km) s of Madeline); Madeline Plains 1615 Comment
  UC452565  Rumex salicifolius var. lacustris Milo S. Baker Lassen near Eagle Lake Comment
  CDA23213  Rumex salicifolius var. triangulivalvis T. C. Fuller 1959-7-7 Lassen Highway 395, 11 miles south of Ravendale. 0 Comment
  CAS-BOT-BC109417  Rumex venosus P. B. Kennedy 1901-6-10 s.n. Lassen Railroad Station, Constantia. Comment
  HSC29859  Rumex venosus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19300 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  JEPS29739  Rumex venosus Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8494 Lassen 10 mi s Milford (along U.S. Hwy 395) 1219 Comment
  JEPS74706  Rumex venosus Wayne Roderick 1969-5-24 Lassen along Hwy 395 near Janesville Comment
  UC1776705  Rumex venosus G. Schoolcraft 1993-6-1 2267 Lassen Along Hwy 395 about 1.5 mi. n. of turnoff to Wendel 1280 Comment
  UCD101656  Rumex venosus R. N. Raynor 1939-5-31 s.n. Lassen Milford, Honey Lake Valley. Comment
  SD61014  Sagina saginoides D. F. Howe 1964-8-1 Lassen Parsnip Creek, Warner Mts., Modoc National Forest 1829 Comment
  JEPS87461  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
  CAS-BOT-BC445675  Sagittaria cuneata B. Trowbridge 1977-7-11 5985 Lassen In Willow Creek, vicinity of Rice Canyon, northeast of Susanville 1706 Comment
  JEPS124720 Image available Sagittaria cuneata Laurel Loeblich 1964-7-1 73 Lassen Along highway 299 going west .5 miles of junction of A-2 and highway 139. Comment
  CAS-BOT-BC132697  Salix John Thomas Howell 1976-7-20 52017 Lassen Bottom flats along Willard Creek near its confluene with Susan River, about 5 miles west of Fredonyer Pass 1432 Comment
  CAS-BOT-BC103456  Salix eastwoodiae G. Schoolcraft 1997-8-6 2666 Lassen Diamond Mtn. 2316 Comment
  JEPS114626  Salix exigua Lowell Ahart, John Dittes 2008-6-22 15043 Lassen On the bottom of a deep ditch, on the south side of the road levee, open meadow area, in Big Valley, about 2.4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.4 miles (air) northeast of Bieber 1257 Comment
  CAS-BOT-BC107961  Salix geyeriana John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49220 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 Comment
  JEPS107968  Salix jepsonii Lowell Ahart, John Dittes 2005-6-2 11947 Lassen Long Valley, along a small stream, about 1 1/2 miles (air) northeast of the Anderson Ranch home, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  CAS-BOT-BC128221  Salix lasiandra subsp. caudata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49221 Lassen Elysian Valley northwest of Janesville - Sierra Nevada 1325 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-BC124635  Salix lemmonii Hans Leschke 1960-8-9 1744 Lassen Manzanita Lake 1781 Comment
  CHSC13655  Salix scouleriana E. L. Smith 1971-7-26 987 Lassen At Eagle Lake Field Station ca. 20 mi nw of Susanville. 1615 Comment
  CAS-BOT-BC176903  Salsola tragus Margaret Williams; Steven Williams 1974-7-26 74 -L-7 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC5274  Salvia aethiopis 1944-6-18 Lassen Eagle Lake. Susanville roadside. Comment
  JEPS62714  Salvia dorrii var. incana Jos. Grinnell 1929-6-8 Lassen s side Pete's Valley 1371 Comment
  CHSC68855  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1997-6-24 8609 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundry. 1889 Comment
  UC1585882  Sambucus racemosa var. microbotrys Barbara Ertter 1988-7-25 7873 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 air mi s of Susanville); Diamond Mts. 2255 Comment
  JEPS117483  Sanguisorba annua Lowell Ahart, John Dittes 2010-7-31 17003 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  UC1924239  Sanguisorba annua Debra Valov 2004-6-8 2004245 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  POM90118  Sanguisorba annua Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  CHSC68839  Sanicula graveolens Vernon Oswald; Lowell Ahart 1997-6-24 8629 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
  OBI75902  Sanicula graveolens Anthony Baniaga 2011-8-1 475 Lassen Lassen Natl Forest. NW Swain Meadow. Swain Mtn qud T30N R8E sec 27 SE of NW 1768 Comment
  POM161480  Sanicula tuberosa Franklin P. Nutting 1894-7-9 s.n. Lassen Pine Creek Comment
  RSA74137  Sanicula tuberosa M. S. Baker 1952-5-23 12426 Lassen Hwy 36 E of Chester Comment
  UC1598734  Sanicula tuberosa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  SEINET10579543  Sanicula tuberosa Katherine L. Morris, David B. Dunn; Melvin L. Conrad 1973-5-25 Morris 242 Lassen Collected 7.6 mi. NW of Jct. of Hwy 36 & 44 on Hwy 44. Comment
  JEPS123840  Saponaria officinalis Lowell Ahart, John Dittes 2015-7-14 20323 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CAS-BOT-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
  UC1037239  Saxifraga aprica Leo Whitney 1935-6-11 3227 Lassen Camp 10, Fruit Grower's Supply Company Camp 10; Lassen National Forest, Fruit Grower's Supply Company Comment
  JEPS17632  Saxifraga oregana Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5403 Lassen 0.8 mi s of Lassen-Modoc County Line (below and s of Patterson Ranger Station, along East Creek, southern end of the Warner Mountains); Warner Mountains, East Creek 2011 Comment
  JEPS96023  Saxifraga oregana Vernon H. Oswald and Lowell Ahart 1996-6-24 7889 Lassen 0.5 mi e of Eagle Lake Road ((A1) and 2.5 mi s of Eagle Lake, Papoose Meadows, Modoc Plateau, Montane Meadow); Papoose Meadows, Modoc Plateau, Montane Meadow 1633 Comment
  POM111523  Schoenoplectus fluviatilis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1100770  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1947-7-9 13298 Lassen irrigation ditch 5 mi e Bieber; e of Bieber Comment
  UC1609484  Scirpus nevadensis Vernon H. Oswald and Lowell Ahart 1993-6-14 5521 Lassen ca 2.0 mi ene Spaulding Tract Rd. (Rd. 518, 33N89) (Eagle Lake Rd. (Lassen A1) at Sandy Beach on the w shore Eagle Lake, upper beach between rd. & lake); Sandy Beach, w shore Eagle Lake 1566 Comment
  CDA39106  Scirpus pungens T. C. Fuller 1964-10-8 12708 Lassen Wendel Hot Springs, ca. 1 mile west of Wendel. 0 Comment
  CAS-BOT-BC240003  Scribneria bolanderi Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 759 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  CHSC5917  Scrophularia californica subsp. floribunda J. B. Kimsey 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1615 Comment
  CHSC77219  Scutellaria holmgreniorum G. Schoolcraft 1998-7-14 2762 Lassen N. of Shaffer well on E. side of Tablelands. 1371 Comment
  SEINET4855797  Scutellaria holmgreniorum Unknown 1980-7-5 9524 Lassen Upper Smoke Creek drainage, 21.9 km (13.6 mi) from U. S. Hwy 395 via Rye Patch Canyon, 24 km (15 mi) airline distance southeast of Ravendale. 1580 Comment
  CAS-BOT-BC214262  Scutellaria nana G. Schoolcraft 1986-6-18 1630 Lassen S. side of Smoke Creek between Shinn & Smoke Creek Ranches 1493 Comment
  CAS-BOT-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
  JEPS62885  Scutellaria nana L. S. Smith C. 1918 Lassen Bieber Range, nw Lassen County Bieber Range 1371 Comment
  POM80110  Scutellaria nana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  UC1537581  Scutellaria nana Gordon H. True Jr. 1936-6-25 540 Lassen e of Harvey Valley Ranger Station (Harvey Valley); Harvey Valley 1706 Comment
  UC1549237  Scutellaria nana Richard Olmstead 1984-6-27 586 Lassen turnoff 14 mi s of Ravendale (12.2 mi e of US 395, Rye Patch Canyon Road); Rye Patch Canyon Road 1566 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
  CAS-BOT-BC363324  Senecio aronicoides Alice Eastwood 1912-8-22 1819 Lassen Foot of Lassen Butte, Lassen Butte Region Comment
  CAS-BOT-BC363326  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen West of Fredonyer Pass 1676 Comment
  CHSC23475  Senecio clarkianus Wayne O. Baum 1971-7-14 71 -61 Lassen N. slope of Gallatin Peak. 2011 Comment
  CAS-BOT-BC363686  Senecio hydrophilus A. A. Heller 1938-6-23 15192 Lassen About 4 miles east of Westwood 1432 Comment
  OBI75864  Senecio hydrophilus Anthony Baniaga 2011-9-8 511 Lassen Lassen Natl Forest. Caribou Wilderness; Long Lake, W shore peninsula. Red Cinder quad T30N R7E sec 16 SW of NW 2103 Comment
  UCD135547  Senecio integerrimus Grady L. Webster 1989-5-13 7723 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  SEINET10833711  Senecio integerrimus Billy Joe Cox 1971-6-2 Cox 3106 Lassen Approx. 30 mi. N of Susanville, on Calif. Hwy. 139, in basalt. Assoc.: Pinus-Artemisia-Juniper. 1646 Comment
  UCD135546  Senecio integerrimus Grady L. Webster 1989-5-13 7702 Lassen Butterfly Valley area. Aound 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  RSA0125038  Senecio integerrimus var. exaltatus A. A. Heller 1938-6-4 15143 Lassen In the yellow pine forest west of Fredonyer pass on State Highway #36. 1737 Comment
  JEPS79212  Senecio serra var. serra L. R. Heckard with R. C. Bacigalupi 1980-6-12 5253 Lassen about 4.5 mi e Westwood Junction (along Highway 36) 1615 Comment
  RSA0013303  Senecio serra var. serra Bruce Bartholomew, B. Anderson 1988-7-22 4496 Lassen Mosquito Creek ca. 2 km SW of Patterson Meadow, southern end of the Warner Mountain 2080 Comment
  CHSC13513  Senecio triangularis J. Pitts 1972-7-22 337 Lassen Found ca. .5 mi past Lassen Park gate. Comment
  UC36171  Senecio triangularis M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  CHSC105238  Sidalcea glaucescens Lowell Ahart; John Dittes 2010-7-31 17016 Lassen On the south side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CAS-BOT-BC205777  Sidalcea oregana Ralph K. Gierisch 1968-7-11 3354 Lassen Lassen National Forest, Harvey Valley 1706 Comment
  CAS-BOT-BC205782  Sidalcea oregana Alice Eastwood; John Thomas Howell 1940-6-11 7999 Lassen Bieber Comment
  SEINET11986397  Sidalcea oregana N. E. Heiken 1978-1 86 Lassen Colman Lake, several mi S of Eagle Lake 1963 Comment
  UC506975  Sidalcea oregana subsp. oregana George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Lassen Forest , Patterson Flat 1737 Comment
  POM260184  Sidalcea oregana subsp. oregana C. L. Hitchcock 1940-5-26 6643 Lassen Overflow of Pitt River, 1 mile W of Bieber Comment
  RSA719898  Sidalcea oregana subsp. oregana Michael A. Vincent, K. Levings 2006-7-29 12906 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  POM84786  Sidalcea oregana subsp. spicata Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  JEPS28445  Silene bernardina George W. Gillett 1957-7-24 896 Lassen dry flats between Cameron Meadow and Snag Lake (Lassen Volcanic National Park); , btw Cameron Mdw and Snag Lake 1950 Comment
  UC506918  Silene bernardina George A. Fischer and Irwin H. Johnson 1933-7-14 F- 257 Lassen Lassen Forest 1783 Comment
  CAS-BOT-BC383113  Silene douglasii Andrew Townesmith; Karen M. Meyer 2007-7-22 846 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
  SEINET10733247  Silene douglasii Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 846 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
  JEPS51005  Silene lemmonii Brown and Wieslander 1922-7-18 34 Lassen Martin Sprs Eagle Lake, Martin Sprs Comment
  CAS-BOT-BC389553  Silene nuda Louella Bass 1973-6-15 107 Lassen Elysian Valley 1325 Comment
  CHSC36188  Silene nuda M. S. Taylor 1982-7-8 4790 Lassen Along Scott Rd just s of bend, ca. 4 mi ne of Beckwourth Pass. 1432 Comment
  CAS-BOT-BC389543  Silene nuda H. D. Ripley; R. C. Barneby 1943-6-13 5686 Lassen Milford 1264 Comment
  UC8482  Silene occidentalis subsp. occidentalis Milo S. Baker 1896-7-30 Lassen Silver Lake Comment
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Sep 9 2015
  CHSC111252  Sisymbrium altissimum L. P. Janeway; B. Castro 2012-7-2 10935 Lassen Modoc Plateau. Along Smoke Creek Ranch Road 6.9 road km east of Hwy 395. 1387 Comment
  CHSC5243  Sisymbrium altissimum L. Harman 1946-6-25 Lassen Eagle Lake. S. S. Camp at Webbs. 1584 Comment
  JEPS107864  Sisymbrium altissimum Lowell Ahart, John Dittes 2005-6-2 11921 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
  SEINET11572879  Sisymbrium altissimum M. J. Williams 1974-7-26 74 -L-33 Lassen 2 mi. W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  RSA0028051  Sisymbrium altissimum John F. Emmel 1996-7-14 1425 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  RSA152595  Sisymbrium altissimum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16333 Lassen 13.5 miles E of Susanville. Comment
  CHSC64775  Sisymbrium orientale Vernon H. Oswald 1995-5-31 6803 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.6 mi e of Hwy. 395, between Litchfield and Ravendale. 1371 Comment
  CHSC7681  Sisyrinchium douglasii Beverley J. Wise 1969-4-21 137 Lassen 2.6 mi. south of Susanville on the old dump road. 1341 Comment
  JEPS62138  Smilacina stellata W. L. Jepson 1918-8-2 7783 Lassen lower bench of creek 1 mi below Boni Ranch house; Long Valley, Long Valley Creek 1371 Comment
  CHSC65362  Solanum triflorum Vernon H. Oswald; Lowell Ahart 1995-8-14 7176 Lassen Modoc Plateau. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. 1348 Comment
  HSC21315  Solanum triflorum D. E. Anderson 1962-8-6 2331 Lassen Lake at foot of Tule Mtn. Comment
  SBBG3122  Sorbus sitchensis H. and M. Dearing 1939-6-12 3644 Lassen S of Lassen Comment
  CHSC59159  Sparganium emersum subsp. emersum Vernon H. Oswald; Lowell Ahart 1992-7-16 5119 Lassen Swamp on Bridge Creek, W of the Cinder Pit on the logging road paralleling the E side of the creek, 1.3 mi N of Hwy. 44 and McCoy Flat Reservoir, between Old Station and Susanville. In streamlets on the meadow. 1719 Comment
  UC1099936  Sparganium emersum var. emersum Verne Grant and Irving Schneider 1947-8-24 8271 Lassen nw shore Blue Lake (n Lassen County) Comment
  CAS-BOT-BC390560  Spergularia rubra John Thomas Howell; Gordon H. True 1973-8-1 50245 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2133 Comment
  CHSC25308  Sphaeralcea grossulariifolia Pauleen Broyles 1977-6-1 155 Lassen Skedaddle Ranch Road at South Fork Reservoir turn-off, ca. 8 km ne of Herlong. 1660 Comment
  CAS-BOT-BC374760  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 1989-5-3 1865 Lassen North end of Secret Valley s. of Karlo Comment
  JEPS103181  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat SE of Ravendale BLM Fire Station 1645 Comment
  UCD136228  Sphaeromeria potentilloides var. potentilloides G. Schoolcraft 2000-6-19 2905 Lassen Flat southeast of Ravendale BLM Fire Station. 1645 Comment
  CAS-BOT-BC149630  Spiraea douglasii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49445 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS63054  Stachys ajugoides var. rigida Brown and Wieslander ca. 1914 57 Lassen near Eagle Lake; Martin Sprs. Comment
  UC773921  Stachys ajugoides var. rigida L. R. Short and Wm. Gansberg 1936-7-9 S- 485 Lassen Burgess Spring Experiment Range Lassen Forest 1795 Comment
  CAS-BOT-BC60991  Stanleya viridiflora Louella Bass 1982-6-20 s.n. Lassen 0.5 mile west of Karlo. Comment
  CAS-BOT-BC60992  Stanleya viridiflora H. D. Ripley; R. C. Barneby 1943-6-15 5761 a Lassen Smoke Creek, northeast of Kesiland [illegible?]. 1341 Comment
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  SEINET11933235  Stellaria longipes J. D. Prouty 1978-1 29 Lassen S of Eagle L., along Papoose Creek, ca 1 mi from Gallatin Rd