Search Results — 2000 specimen records retrieved (1606 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
  CDA467  Abies concolor Mark Lubinski 1999-10-12 PDR# 070105 Lassen 1 mi. W of State Route 44 and 36 (intersection). Comment
  SEINET11305032  Abies concolor var. lowiana D. Charlet 1996-7-8 2287 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1622 Comment
  CAS-BOT-BC331637  Acer macrophyllum John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49449 Lassen Elysian Valley, west of Janesville 1325 Comment
  RSA394187  Acer macrophyllum Christopher Davidson 1975-6-6 2726 Lassen Road to Thompson Peak, branching east of road 204, 7.5 miles SW of Susanville, following Gold Run Creek 0.5 mile on this road to the peak 1494 Comment
  SEINET7893918  Acer macrophyllum E. Brooks 1927-5-9 s.n. Lassen 80 miles N of Reno. Comment
  CAS-BOT-BC28648  Achillea millefolium Louella Bass 1973-5-29 72 Lassen Elysian Valley 1325 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
  UC1125421  Achillea millefolium A. Simontacchi 1940-6-13 826 Lassen 3.3 mi wsw Patterson Mtn.; Halls Flat Quad. 1752 Comment
  UC1024644  Achnatherum Leo Whitney 1933-7-1 2214 Lassen Slate Creek, ca. 8 mi nw Eagle Lake; Lassen National Forest Comment
  CHSC7697  Achnatherum hymenoides Beverley J. Wise 1969-5-16 134 Lassen 18 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd 215. 1493 Comment
  RSA716057  Achnatherum hymenoides L. Ahart, John Dittes 2005-6-2 11996 Lassen Long Valley, about 41/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1428 Comment
  UCD50546  Achnatherum lemmonii A. H. Shunk 1923-1 11 Lassen Bogard Ranger Sta., Lassen County, California. Comment
  UCD50617  Achnatherum lemmonii Beecher Crampton 1960-6-18 5717 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  RSA129475  Achnatherum lemmonii var. lemmonii G. A. Fischer 1933-7-14 252 Lassen Lassen Forest 1768 Comment
  UCD50787  Achnatherum nelsonii R. Tofsrud 1947-7-1 221 Lassen 13 miles E of Madeline. Comment
  UCD51122  Achnatherum occidentale subsp. californicum L. R. Short; W. Gansberg 1936-6-2 S 366 Lassen Burgess Spring Experimental Range, Lassen National Forest. 1858 Comment
  RSA582082  Achnatherum occidentale subsp. occidentale J. T. Howell 1934-7-6 12431 Lassen Hall's Flat. Comment
  UC584331  Achnatherum occidentale subsp. occidentale G. L. Stebbins Jr. 1937-7-11 2324 Lassen 1 mi below summit; Black Mt. 1940 Comment
  CAS-BOT-BC218612  Achnatherum occidentale subsp. pubescens John Thomas Howell 1955-7-19 30821 Lassen East side of Beckwourth Pass, Sierra Nevada 1493 Comment
  UC1137654  Achnatherum occidentale subsp. pubescens George A. Fischer and Irwin H. Johnson 1933-7-12 218 Lassen 1 1/2 mi e Hall's Flat Ranger Station; Lassen National Forest 1722 Comment
  UC1143048  Achnatherum occidentale subsp. pubescens L. R. Short and J. Warren 1936-6-29 S- 462 Lassen Burgess Spring Experimental Range Lassen National Forest 1820 Comment
  UCD32655  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2051 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD51216  Achnatherum occidentale subsp. pubescens R. Tofsrud 1947-7-1 222 Lassen 12 mi. E. of Madeline. Comment
  SEINET235273 Image available Achnatherum thurberianum CSU Chico Lassen unspecified Comment
  SEINET235298 Image available Achnatherum thurberianum R. B. Turner 1980-5-18 Lassen Hwy 139 1 miles N of Susanville. 1463 Comment
  UC1026712  Achnatherum thurberianum Leo Whitney 1935-6-25 3311 Lassen 13 mi w of upper end Eagle Lake; Ashurst Mountain Comment
  UC1133071  Achnatherum thurberianum A. Simontacchi 1940-6-13 859 Lassen 3/3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD51422  Achnatherum thurberianum L. Whitney 1935-6-19 3267 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CAS-BOT-BC217991  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  CAS-BOT-BC217993  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  UC579786  Achnatherum webberi David D. Keck and J. Clausen 1935-6-24 3749 Lassen 2 mi s, on borders of an alkali mud flat Ravendale 1465 Comment
  CHSC105251  Acmispon americanus var. americanus Lowell Ahart; John Dittes 2010-7-31 16999 Lassen On the north side of the road, about 15 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
  SBBG109301  Acmispon nevadensis var. nevadensis C. B. Hardham 1961-6-16 7454 Lassen Gold Run Crk, S of Susanville Comment
  CAS-BOT-BC391364  Aconitum columbianum subsp. columbianum Alice Eastwood 1912-8-22 1770 Lassen Trail from Morgans Springs to Sulphur Works, Lassen Butte Region Comment
  SEINET4339237  Aegilops triuncialis G. Schoolcraft 1997-6-26 2603 Lassen 1.2 mile north of Susanville, west of Highway 395 1326 Comment
  CHSC25082  Agastache parvifolia K. R. Stern 1967-6-30 2455 Lassen West Central side of Eagle Lake. 1554 Comment
  UC882898  Agastache parvifolia Lewis S. Rose 1940-6-15 40591 Lassen 39 mi n Susanville; Grasshopper Valley 1524 Comment
  UC1537574  Agastache urticifolia Gordon H. True Jr. 1936-6-27 564 Lassen n slope Hot Spring Mountain; n slope of Hot Spring Mountain 1828 Comment
  CAS-BOT-BC29597  Agoseris X dasycarpa M. K. Bellue 1940-6-1 s.n. Lassen Susanville Comment
  UCR73167  Agoseris glauca G. L. Webster 1989-5-13 7704 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  SEINET10616047  Agoseris glauca Paul Gallian, David B. Dunn 1971-6-2 Gallian 520 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash. 1402 Comment
  CHSC60711  Agoseris glauca var. glauca Vernon H. Oswald; Lowell Ahart 1993-6-14 5530 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518,33N89). 1566 Comment
  CHSC68840  Agoseris heterophylla Vernon Oswald; Lowell Ahart 1997-6-24 8601 Lassen South of Susanville on the north side of Diamond Mtn at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (20N10). 1655 Comment
  UC584430  Agoseris heterophylla var. heterophylla Babcock and Stebbins 1936-6-7 1774 Lassen Red Rock Comment
  CAS-BOT-BC13231  Agoseris monticola G. D. Hanna 1958-9-22 s.n. Lassen Road from Caribou Lake to Cone Lake Comment
  UC1136778  Agoseris retrorsa L. R. Short and W. McNulty 1936-6-15 S- 436 Lassen Burgess Spring Exp. Range 1848 Comment
  CAS-BOT-BC127240  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50226 Lassen Sierra Nevada. Headwaters of Baxter Creek. East slope of Diamond Range south of Susanville. 2133 Comment
  SEINET248545  Agrostis exarata Barbara L. Wilson, Richard Brainerd, Danna Lytjen, 2004-8-24 11168 Lassen Snowstome Creek, at a spring; upstream of Biscar reservoir, west of an old railroad right of way. 1463 Comment
  UC53515  Agrostis exarata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  CAS-BOT-BC139676  Agrostis gigantea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49483 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 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
  CAS-BOT-BC138803  Agrostis scabra John Thomas Howell; Gordon H. True 1973-8-1 50178 Lassen Sierra Nevada. Gold Run Creek Road south of Susanville, Diamond Range. 1584 Comment
  UC1137058  Agrostis scabra August L. Hormay 1932-7-20 Lassen Bogard Ranger Station Lassen National Forest Comment
  UCD53299  Agrostis scabra L. Whitney 1933-8-15 s.n. Lassen Meadow near Sheepshead. Comment
  CAS-BOT-BC246539  Agrostis stolonifera Leland S. Smith 1919-8-10 1132 Lassen Modoc National Forest, Ash Valley - Templeton's Meadow 1463 Comment
  UCD53581  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Lassen National Forest. Bogard Ranger Station. Comment
  UCSC000092  Agrostis stolonifera August L. Hormay 1932-7-20 s.n. Lassen Bogard Ranger Station - Lassen National Forest Comment
  CAS-BOT-BC267060  Alisma John Thomas Howell 1974-7-10 50546 Lassen Elysian Valley 1325 Comment
  UCD137906  Alisma gramineum Malcolm A. Nobs; S. Galen Smith 1949-7-22 1074 Lassen along Willow Creek, Willow Creek Valley, 10 miles north of Susanville. Comment
  UC1536805  Alisma plantago-aquatica Gordon H. True Jr. 1939-7-6 1016 Lassen George Bailey Ranch Honey Lake Valley Comment
  HSC2887  Alisma triviale R. G. Means 1962-7-5 73 Lassen 1 mi. SW of Bieber. 1250 Comment
  CAS-BOT-BC131926  Allium Mike Vasey 1990-6-30 9060 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road, Modoc National Forest 1500 Comment
  CHSC25094  Allium acuminatum K. R. Stern 1967-7-1 2458 Lassen Ca. 10 mi. NE of Susanville. State Hwy. 139. Comment
  POM110306  Allium acuminatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CAS-BOT-BC459569  Allium acuminatum G. Schoolcraft 1986-5-19 1574 Lassen North slope of Bald Mtn., Susanville 1280 Comment
  UCD150395  Allium acuminatum Harry A. George 1967-6-14 s.n. Lassen Hartson Reservoir. Comment
  SD6424  Allium anceps Mrs. R. M. Austin 1879-1 Lassen No further location information given on label. Comment
  SEINET3883805  Allium anceps D. W. McNeal 1978-5-30 2127 Lassen Beside Highway 395, 3.0 miles south of Ravendale.; 0 Comment
  SEINET8117272  Allium atrorubens A. Tiehm, J. Nachlinger, M. J. Williams 1988-1 11702 Lassen S side of Shaffer Mountain, 3.4 road miles N of the Wendel road on highway 395 from Susanville to Alturas, W of the highway. 1387 Comment
  CAS-BOT-BC459452  Allium bisceptrum David D. Keck; J. Clausen 1935-6-25 3767 Lassen 2 miles W of Westwood on road to Chester at county line. Comment
  CHSC69845  Allium lemmonii D. W. McNeal 1983-6-5 2840 Lassen Beside Eagle Lake Rd. (Lassen Co. Hwy. A-1) ) 0.5 mi. n. of Hwy. #36. Comment
  RSA125593  Allium lemmonii Peter H. Raven, Otto T. Solbrig 1958-6-17 13288 Lassen U. S. Highway 395, 1.8 miles south of Ravendale. Comment
  UC1229822  Allium lemmonii Gus Hormay 1961-6-15 Lassen experimental forest ot Patterson Flat Patterson Flat Comment
  UC1609487  Allium lemmonii Vernon H. Oswald and Lowell Ahart 1993-6-28 5587 Lassen e. of Poison Lake (Harvey Valley Rd. (33N02), 1.2 mi n. of Hwy. 44, e side of Grays Valley); Grays Valley 1731 Comment
  SEINET3884711  Allium lemmonii D. W. McNeal 1983-6-5 2840 Lassen Beside Eagle Lake Road (Lassen Co. Highway A-1) 0.5 mile North of Highway #36.; 0 Comment
  CAS-BOT-BC474046  Allium parvum Louella Bass s.n. Lassen Elysian Valley Comment
  CAS-BOT-BC474049  Allium parvum G. Schoolcraft 1998-4-27 2704 Lassen N. end of Ft. Sage Mtn 1859 Comment
  SEINET8191388  Allium parvum L. Miller 1934-3-29 s.n. Lassen E of Susanville. Comment
  JEPS107805  Alnus incana subsp. tenuifolia Lowell Ahart, John Dittes 2005-6-2 11945 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction 1601 Comment
  UCD109973  Alnus incana subsp. tenuifolia John Thomas Howell; J. H. True 1973-6-28 49461 Lassen Elysian Valley, west of Janesville. 1325 Comment
  SEINET7295647 Image available Alopecurus aequalis A. A. Beetle 1941-1 2795 Lassen 10 miles west of Chester, rte 36 Comment
  UCD55848  Alopecurus aequalis L. Whitney 1933-8-4 s.n. Lassen 8 mi n.w. Slake Creek, Eagle Lake, Lassen National Forest. 1889 Comment
  CAS-BOT-BC138161  Alopecurus aequalis var. aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 miles west of Chester, Route 36. Comment
  CAS-BOT-BC138163  Alopecurus aequalis var. aequalis A. A. Beetle 1941-6-28 2795 Lassen 10 miles west of Chester, Route 36. Comment
  RSA125344  Alopecurus geniculatus P. H. Raven, Otto T. Solbrig 1958-6-17 13299 Lassen Adobe fields along United States Highway 395, 4.8 miles south of Madeline. 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
  UC1924568  Alopecurus pratensis Debra Valov 2006-5-28 2006040 Lassen Bieber off County Rd. A2 c. 12 km east of Hwy 299 1279 Comment
  CHSC63387  Alyssum desertorum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6310 Lassen Blue Door Flat on Clarks Valley Rd. (Lassen 510) ca. 7 mi E of Madeline. On the edge of the road. 1767 Comment
  HSC102800  Alyssum simplex L. Ahart 2011-6-20 17493 Lassen 1.9 air miles NW of Moll Reservoir, 2.8 air miles W of Ash Valley, 8.4 air miles SE of Adin; ~ 80 yds. N of where road crosses Hunsinger Draw 1521 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
  CHSC29941  Amaranthus blitoides Robin L. Ondricek 1978-8-7 117 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  CHSC29942  Amaranthus blitoides Robin L. Ondricek 1978-8-2 111 Lassen Parking area at Eagle Lake Field Station. 1554 Comment
  CDA23690  Amaranthus blitoides T. C. Fuller 1971-7-13 19898 Lassen North base of Skeedaddle Mountain. 0 Comment
  JEPS121243  Amaranthus californicus Lowell Ahart, John Dittes 2013-7-22 18860 Lassen 50 yards W of the road levee, about 250 yards S of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD54542  Amaranthus californicus Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2727 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  JEPS40951  Ambrosia acanthicarpa R. F. Hoover 1940-10-5 4666 Lassen Wendel Comment
  JEPS95710  Ambrosia acanthicarpa Vernon H. Oswald and L. Ahart 1995-8-14 7191 Lassen T33N R14E SW1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) 1.8 mi W of Hwy. 395, N of Susanville 1645 Comment
  RSA518417  Ambrosia acanthicarpa George K. Helmkamp 1990-9-23 A- 3 Lassen 3 mi. E of Susanville, along State Road 36. 1341 Comment
  RSA719708  Ambrosia acanthicarpa Michael A. Vincent, K. Levings 2006-7-29 12920 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  SEINET3871758  Ambrosia acanthicarpa Richard R. Halse 2010-8-26 8089 Lassen Along State Hwy. 70 at Beckwourth Pass ca 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles E of Sierra Valley.; 0 1584 Comment
  CAS-BOT-BC142541  Amelanchier utahensis Brighton C. Cain 1925-8-24 116 Lassen 1 mile below Drakesbad, Mt. Lassen Volcanic National Park 1645 Comment
  CAS-BOT-BC142543  Amelanchier utahensis Alice Eastwood 1912-8-22 1807 Lassen Trail from Morgans Springs to Lassen Butte Comment
  UC1127823  Amelanchier utahensis A. Simontacchi 1940-6-4 796 Lassen 7.1 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quad. 1828 Comment
  UCD146584  Amphiscirpus nevadensis Richard R. Halse 2010-8-25 8087 Lassen along State Highway 139 around 26.2 miles north of Susanville on the northeast shore of Eagle Lake. 1559 Comment
  CAS-BOT-BC222251  Amsinckia Elmer I. Applegate 1934-5-4 8916 Lassen At south end of Secret Valley Comment
  HSC97154  Amsinckia menziesii L. Ahart, John Dittes 2005-6-1 11899 Lassen N side of Scott Rd., E of the railroad underpass, Long Valley, about 4.75 mi. N of the intersection of Scott Rd. and Hwy. 70, 6.2 mi. NW of Hallelujah Jct. 1460 Comment
  UC1182224  Amsinckia menziesii var. menziesii Francia Chisaki 1956-5-31 891 Lassen 15.4 mi n Litchfield (on Hwy #395) Comment
  UCD72518  Amsinckia tessellata Joe DiTomaso 2008-5-15 s. n. Lassen Modoc Plateau, just inside California (from Nevada) on Smoke Creek Road near Ravendale. Comment
  CAS-BOT-BC15606  Ancistrocarphus filagineus Alice Eastwood; J. T. Howell 1940-6-16 8354 Lassen Constantia Comment
  POM36284  Ancistrocarphus filagineus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC71067  Anisocoma acaulis Vernon H. Oswald; Lowell Ahart 1998-5-22 9121 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  JEPS94117  Anisocoma acaulis Vernon H. Oswald and Lowell Ahart 1998-5-22 9134 Lassen ca. 3.5 mi. n. Doyle (Fort Sage Rd. 2.3 mi. n. of Hackstaff Rd.) 1341 Comment
  CAS-BOT-BC63954  Antennaria argentea John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49454 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS88514  Antennaria argentea Vernon H. Oswald and Lowell Ahart 1996-6-24 7837 Lassen Forest Rd. 31N63 ca. 0.2 mi s spur road to the cabins at Papoose Meadow (ca. 0.5 mi e of Eagle Lake Rd. (A1) and 2.5 mi s of Eagle Lake); Modoc Plateau 1644 Comment
  UC773954  Antennaria argentea L. R. Short and Wm. Gansberg 1936-6-10 S- 414 Lassen Burgess Spr. Exp. Range 1856 Comment
  CAS-BOT-BC63875  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1371 Comment
  SEINET2029685 Image available Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds about 12 miles north of Fall River Mills (in Shasta County) on Fall River 1372 Comment
  CAS-BOT-BC59217  Antennaria dimorpha Doris Kildale Gillespie 1930-5-13 9392 Lassen Between Susanville and Janesville Comment
  CHSC5193  Antennaria dimorpha 1945-6-1 Lassen Eagle Lake. 1584 Comment
  CHSC68729  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1997-5-27 8505 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  CHSC71069  Antennaria dimorpha Vernon H. Oswald; Lowell Ahart 1998-5-22 9088 Lassen Hwy. 36 between Fredonyer Summit and Susanville, 0.4 mi west of the Susan River and Bizz Johnston Trail. 1417 Comment
  HSC68156  Antennaria dimorpha J. P. Smith, J. O. Sawyer 1971-5-23 4657 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  SEINET10854084  Antennaria dimorpha Billy Joe Cox 1971-6-2 Cox 2997 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy. 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  CAS-BOT-BC69143  Antennaria geyeri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49517 Lassen Elysian Valley, west of Janesville 1325 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
  UC88216  Antennaria geyeri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  CAS-BOT-BC58693  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen East of Westwood Comment
  JEPS107290  Antennaria luzuloides Lowell Ahart, John Dittes 2005-6-1 11862 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
  JEPS94608  Antennaria luzuloides Vernon H. Oswald and Lowell Ahart 1997-5-27 8506 Lassen on Forest Route 38N04 0.3 mi n Hwy. 139 ((between Hwy 139 near Willow Creek Guard Station and Coyote Flat) n of Susanville, between road and small creek n) 1560 Comment
  POM39269  Antennaria luzuloides Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  RSA32730  Antennaria luzuloides A. A. Heller 1938-6-23 15189 Lassen State highway 36, about 4 miles east of Westwood Comment
  UC1523734  Antennaria luzuloides Gary Schoolcraft 1981-7-8 498 Lassen s of Coulthurst Flat 1920 Comment
  CHSC89757  Antennaria luzuloides subsp. aberrans L. P. Janeway 2004-6-26 8168 Lassen High Cascade Range. 0.6 km east-southeast of Patterson Flat along Road 33N71; Blacks Mountain Experimental Forest. 1785 Comment
  CHSC54171  Antennaria luzuloides subsp. luzuloides Vernon H. Oswald 1991-5-28 4625 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  UC1037270  Antennaria rosea Leo Whitney 1934-7-10 1768 Lassen near, 14 mi w of Eagle Lake Harvey Spring; Lassen National Forest, Harvey Valley 1737 Comment
  UC1583976  Antennaria rosea G. Schoolcraft 1990-7-2 2103 Lassen w of Cold Spring Mtn. 1645 Comment
  UCD159578  Anthemis cotula D. S. Park 2011-8-24 315 Lassen East of Westwood. Near Goodrich Creek. 319 Comment
  CDA42997  Apera interrupta L. Ahart, John Dittes 2008-6-19 14868 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  CHSC4823  Apocynum androsaemifolium R. Carter 1967-7-21 624 Lassen Ca. 3 mi n of highway 395 on rd through Jonesville on e side of rd. Dramond Mountains. Comment
  UC1123464  Apocynum androsaemifolium H. P. Hagge 1929-9-12 28 Lassen Logan Mt. Eagle Lake Quad., Logan Mt. Comment
  UC1123490  Apocynum androsaemifolium A. Simontacchi 1940-8-5 930 Lassen 4.2 mi. w. Harvey Mt. Lookout; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CHSC12461  Aquilegia formosa var. truncata Robert W. Severin 1969-6-25 15 Lassen West side of Murrer's Upper Meadow. 2 mi ESE E.L.B.S. 1584 Comment
  SEINET10833275  Arabis David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17783 Lassen 6 mi n of hallelujah jct on u.s. 395, In artemisia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  SEINET10480742  Arabis drummondii Jeffrey Huber 1971-6-2 Huber 125 Lassen Ca 30 mi n of susanville, on state hwy 139, in basatl. Pinus-artemesia-juniper Association. 1646 Comment
  NY112495  Arabis holboellii var. pinetorum R. C. Rollins 1981-5-31 81176 Lassen Just N of Eagle Lake Comment
  HSC82265  Arabis holboellii var. retrofracta Thomas W. Nelson, Jane P. Nelson 1980-7-6 5992 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA0129096  Arabis oligantha Franklin P. Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  SEINET10481537  Arabis puberula David B. Dunn, Billy Joe Cox 1971-6-2 Dunn 17764 Lassen Approx 12 mi s of adin on state hwy 139, in basalt and clay; along edge of rd on rolling knoll, in artemesia-juniper association. 1372 Comment
  NY119422  Arabis rectissima R. C. Rollins 1983-7-5 83227 Lassen 2 miles S of Eagle Lake Summit Comment
  NY119566  Arabis sparsiflora H. D. D. Ripley 1944-5-29 5948 Lassen South of Constantia 1447.8 Comment
  UC1523810  Arabis sparsiflora var. sparsiflora Gary Schoolcraft 1983-5-24 957 Lassen w. Doyle (along Doyle Grade Rd.) 1645 Comment
  SD64322  Arctium minus Darley F. Howe 1966-8-24 Lassen 32 miles northeast of Litchfield on Hwy #395. 1399 Comment
  POM339728  Arctostaphylos manzanita subsp. manzanita F. R. Fosberg 1969-8-16 51425 Lassen (California Registered Historical Landmark 678) 10 mi. west of Susanville. Comment
  CAS-BOT-BC45899  Arctostaphylos nevadensis A. H. Kramer 1929-1-1 s.n Lassen Prospect Peak Comment
  CAS-BOT-BC45901  Arctostaphylos nevadensis A. W. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CAS-BOT-BC45906  Arctostaphylos nevadensis Marcus E. Jones 1897-7-7 s.n Lassen Lassen's Peak 1828 Comment
  CHSC36979  Arenaria aculeata M. S. Taylor; B. Hammond 1982-8-27 5056 A Lassen On ridge between Crystal and Adams Peaks, Diamond Mts, ca. 4 air mi sw of Constantia. 2225 Comment
  RSA702604  Arenaria congesta L. P. Janeway 2004-6-26 8141 Lassen High Cascade Range. Halls Flat; about 0.3 km east of Road 33N13; 3.5 km north of junction of Road 33N18. 1714 Comment
  UC8100  Arenaria congesta var. congesta M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixey Mts. Comment
  NY342368  Arenaria congesta var. simulans A. A. Heller 1938-6-23 15198 Lassen East of Fredonyer Pass 1645.9 Comment
  JEPS94458  Arenaria congesta var. subcongesta Vernon Oswald and Lowell Ahart 1997-6-24 8632 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
  UC120411  Arenaria congesta var. suffrutescens T. S. Brandegee 1892-7-26 Lassen Milford Comment
  NY430990  Arenaria kingii subsp. plateauensis G. Schoolcraft 1982-6-23 729 Lassen Fort Sage Mountains 1920.2 Comment
  SEINET12090189  Argemone munita Unknown 1977-1 14 Lassen ca .5 mi S of Highway 395, 2 mi W of Milford at Honey Lake Campground, Sec. 16, T27N, R13E 1268 Comment
  CHSC6196  Argemone munita subsp. rotundata M. West 1946-6-14 Lassen Antelope Grade. 1615 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
  CDA24532  Argemone munita subsp. rotundata T. C. Fuller 1962-8-28 9476 Lassen Road to Standish, 3 miles west of Wendell, north of Honey Lake. 0 Comment
  RSA0011559  Arnica R. F. Thorne, Larry E. DeBuhr 1975-8-22 46993 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  JEPS114706  Arnica chamissonis Lowell Ahart, John Dittes 2008-6-20 14902 Lassen In a wet meadow, about 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  UC1776710  Arnica chamissonis G. Schoolcraft 1997-8-1 2385 Lassen About 2 miles W of Boot Lake 2255 Comment
  JEPS21729  Arnica dealbata Franklin P. Nutting Lassen mts s Eagle Lake Eagle Lake Comment
  UC2027205  Arnica dealbata Anthony Baniaga 2011-8-4 489 Lassen Lassen National Forest. About 1/2 mile WNW of Griffith Hill, ca 30 ft N of 30N21. Swain Mountain quadrangle Comment
  CAS-BOT-BC82678  Arnica longifolia L. S. Smith 1918-7-22 1007 Lassen Blue Lake, Modoc National Forest 1874 Comment
  UC1137701  Arnica mollis A. Simontacchi 1940-5-28 785 Lassen 3.2 mi wsw Patterson Mtn.; Halls Flat Quad. 1767 Comment
  CHSC12429  Arnica nevadensis Robert W. Severin 1969-6-21 10 Lassen 2 mi SSE E.L.B.S. between Five Points turnoffs. 1584 Comment
  CHSC63377  Arnica sororia Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-7-18 6313 Lassen Clarks Valley Rd. (Lassen 510) ca. 9 mi E of Madeline. 1859 Comment
  CDA10132  Arnica sororia Gary Schoolcraft 1993-6-19 2298 Lassen Ash Valley RNA between Adin & Madeline. Comment
  CAS-BOT-BC85003  Artemisia arbuscula subsp. arbuscula Clare B. Hardham 1971-8-22 18370 Lassen Diamond Mountain 2346 Comment
  UCR268958  Artemisia arbuscula subsp. arbuscula Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31433 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  RSA0009935  Artemisia arbuscula subsp. arbuscula Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CHSC72215  Artemisia cana subsp. bolanderi Vernon H. Oswald; Lowell Ahart 1998-9-14 9622 Lassen Windy Hollow on the west side of Hwy. 44 ca. 1 mi northwest of its intersection with A21 (to Westwood). 1737 Comment
  UC1119577  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 948 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC217077  Artemisia cana subsp. bolanderi H. M. Hall 1921-9-10 11673 Lassen Madeline Plains Comment
  SD132272  Artemisia douglasiana G. Helmkamp 1990-9-23 E 15 Lassen 20 miles north of Litchfield along U. S. Hwy 395. 1435 Comment
  CHSC77187  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfiled and Bass Hill Roads. 1322 Comment
  JEPS37008  Artemisia ludoviciana subsp. incompta W. L. Jepson 1918-8-4 7809 Lassen Horse Lake 1554 Comment
  CHSC117459  Artemisia ludoviciana subsp. ludoviciana Lowell Ahart; John Dittes 2016-7-13 21105 Lassen Center of the overflow, about 50 yards north of the dam, 200 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC1537358  Artemisia ludoviciana subsp. ludoviciana Gordon H. True 1937-7-10 783 Lassen Bull Flat Refuge 1Q, Bull Flat 1524 Comment
  UC762615  Artemisia nova Robert F. Hoover 1940-9-28 4634 Lassen Susanville Comment
  UCR67441  Artemisia tridentata George K. Helmkamp 1990-9-23 D- 7 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  SEINET230064  Artemisia tridentata subsp. tridentata Leila M. Shultz, John S. Shultz 1985-6-23 8611 Lassen Long Valley Creek drainage, 5 miles north of Doyle 1305 Comment
  UC1119579  Artemisia tridentata subsp. tridentata A. Simontacchi 1940-9-16 949 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC99280  Artemisia tridentata subsp. vaseyana G. Schoolcraft 1988-8-24 1855 Lassen Ash Valley RNA/ACEC 16 mi. east of Adin 1554 Comment
  CHSC26163  Asclepias cordifolia J. D. Detzer; Sacks 1977-6-10 36 Lassen Ca. 0.5 km s of Hwy 395, 4 km w of Milford. 1386 Comment
  UC1523748  Asclepias cordifolia Gary Schoolcraft 1981-6-9 448 Lassen e McArthur (on n side of Hwy. 299) 1280 Comment
  JEPS49969  Asclepias fascicularis Brown and Wieslander 1922-7-25 31 Lassen Martin Sprs. Eagle Lake Comment
  UC1537161  Asclepias fascicularis Gordon H. True Jr. 1937-7-10 787 Lassen between Bull Flat and Skeedaddle 1493 Comment
  SEINET12319574  Asclepias fascicularis Unknown 1978-1 84 Lassen E shore of Eagle L., S of Little Troxel Pt., T32N, R11E, sec14 1573 Comment
  UC1096430  Asclepias speciosa George A. Fischer, Irwin H. Johnson 1933-7-29 F- 276 Lassen Stringer Lassen National Forest 1694 Comment
  JEPS124871 Image available Asclepias speciosa Peter Schultz 1967-7-11 71 Lassen 1 mile south of Milford on U. S. 395. Comment
  SEINET199764  Asclepias speciosa George A. Fischer 1933-7-29 F- 276 Lassen Lassen National Forest; Stringer, in southwest corner of N.F. 1695 Comment
  RSA503251  Aster integrifolius Bruce Bartholomew, B. Anderson 1988-7-22 4502 Lassen Mosquito Creek, 2km SW of Patterson Meadow, southern end of the Warner Mtn. 2080 Comment
  POM261535  Aster intermedius Alice Eastwood 1912-8-22 1895 Lassen Battle Creek Meadows, Lassen Butte Region Comment
  UCR73175  Astragalus G. L. Webster 1989-5-13 7710 Lassen 2.5 mi. east of Beckworth Pass 1500 Comment
  CHSC77208  Astragalus andersonii G. Schoolcraft 1996-5-13 2520 Lassen Fort Sage OHV area 3 miles ne of Doyle. 1402 Comment
  CDA26599  Astragalus andersonii T. C. Fuller 1965-6-3 13608 Lassen Driveway to the cemetery, Janesville. 0 Comment
  NY791374  Astragalus andersonii LeDoux 1973-5-24 861 Lassen Collected at jct. of Highways 70 and 395 at Arco Station. Comment
  RSA614442  Astragalus anxius M. L. Carlson 1996-6-11 4202 Lassen 16 miles southeast of Adin on County Road 527 Comment
  CAS-BOT-BC178765  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains N. of Observation Pk. & Horne Ranch Rd. 1645 Comment
  NY674058  Astragalus canadensis var. brevidens G. Schoolcraft 1988-7-7 1821 Lassen Madeline Plains north of Observation Peak and Horne Ranch Road 1646 Comment
  NY797392  Astragalus canadensis var. brevidens R. R. Halse 1991-7-28 4247 Lassen Along State Highway 139, on the northeast end of Eagle Lake, about 21 highway miles north of Susanville 1558 Comment
  POM204047  Astragalus canadensis var. brevidens J. T. Howell 1934-7-8 12504 Lassen Spaldings Resort; Eagle Lake Comment
  SEINET12162068  Astragalus curvicarpus K. R. Stern 1974-1 5816 Lassen 16.5 mi W of Madeline, on Madeline-Adin Rd. Likely Quadrangle, sec. 32, R11E T35N 1548 Comment
  SEINET5325001  Astragalus curvicarpus M. J. Williams, J. T. Howell 1973-5-12 73 C-16 Lassen Near Herlong turn-off, Hwy. 395. 1250 Comment
  CAS-BOT-BC177843  Astragalus curvicarpus var. curvicarpus G. Schoolcraft 1993-6-10 2286 Lassen Along US Highway 395 near road to Clark Ranch 1280 Comment
  CHSC64875  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald 1995-6-26 6923 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  UCD55155  Astragalus curvicarpus var. curvicarpus Ellen Dean 2006-5-15 3043 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1247 Comment
  CAS-BOT-BC182952  Astragalus filipes Lassen 1927 G. S. Crew 1927-7-15 74 Lassen Lassen National Forest 1725 Comment
  CHSC37299  Astragalus filipes M. S. Taylor; B. Hammond 1982-7-8 4790 A Lassen At gate near RR Xing just off Scott Rd, ca. 5 mi s of Constantia. 1402 Comment
  CHSC64876  Astragalus filipes Vernon H. Oswald; Lowell Ahart 1995-6-19 6883 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395. In wash on n side of road. 1371 Comment
  HSC100805  Astragalus filipes Lowell Ahart, John Dittes 2010-7-31 16976 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, and 8.4 (air) mi. SE of Adin. 1521 Comment
  NY813074  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km south of Doyle on U.S. Highway 395 1430 Comment
  CAS-BOT-BC182957  Astragalus filipes John Thomas Howell 1934-6-10 11909 Lassen Madeline Plains near Termo Comment
  RSA111070  Astragalus filipes H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1943-6-13 5675 Lassen South of Constantia. 1463 Comment
  SEINET231384 Image available Astragalus filipes Margaret J. Williams 1983-7-31 83- 125 -1 Lassen Ash Valley Road, 17 mi from Aden 1829 Comment
  NY674268  Astragalus gibbsii G. Schoolcraft 1993-6-8 2285 Lassen US Highway 395 at Airport Road 1274 Comment
  NY674271  Astragalus gibbsii P. A. Munz 1947-5-20 11889 Lassen Milford 1265 Comment
  CAS-BOT-BC186866  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1944-5-29 5951 Lassen Constantin 1371 Comment
  RSA110068  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1944-5-29 5951 Lassen Constantia 1372 Comment
  SD43503  Astragalus gibbsii Philip A. Munz 1947-5-20 11889 Lassen Milford, dry silty flats 1260 Comment
  CAS-BOT-BC186916  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  OBI77184  Astragalus inversus Anthony Baniaga 2011-7-18 455 Lassen Lassen NF. 3-1/4 mi ESE of Signal Butte. Swains Hole quad. T32N R6E sec 9 NE of SW 1700 Comment
  POM24454  Astragalus inversus Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA111018  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 4300 Lassen West of Susanville 1310 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
  UC1142997  Astragalus inversus August L. Hormay 1934-7-2 Lassen Black's Mtn Headquarters , Black's Mtn Headquarters (Lassen National Forest) 1706 Comment
  RSA0006769  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 s.n. Lassen West of Susanville. Comment
  CAS-BOT-BC229046  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CAS-BOT-BC229049  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC229051  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  JEPS114989  Astragalus lemmonii Lowell Ahart, John Dittes 2008-6-20 14968 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS118159  Astragalus lentiginosus var. floribundus Dean W. Taylor 2009-5-20 20605 Lassen Widow Valley; Big Valley Mountains, logging road ca. 1 air mi NW of Brown Cabin (USGS map, site) 1478 Comment
  UC862859  Astragalus lentiginosus var. floribundus Lewis S. Rose 1940-6-16 40594 A Lassen Susanville 60 Comment
  POM26417  Astragalus lentiginosus var. lentiginosus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
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Mar 6 2011
  UC13403  Astragalus lentiginosus var. lentiginosus M. S. Baker and Frank Nutting 1894-7-5 Lassen Dixey Valley Comment
  CHSC71388  Astragalus lentiginosus var. salinus Vernon H. Oswald; B. Corbin, A. Sanger, G. Schoolcraft 1998-7-6 9247 Lassen East side of Eagle Lake on BLM land just east of the Lassen Youth Camp. 1584 Comment
  CHSC99125  Astragalus lentiginosus var. salinus Lowell Ahart; John Dittes 2008-6-19 14898 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  CAS-BOT-BC187561  Astragalus malacus Mrs. C. C. Bruce 1898-6-1 2214 Lassen Madaline Plains & Modoc Comment
  CHSC7666  Astragalus malacus Beverley J. Wise 1969-5-3 55 Lassen 4.6 mi. east of junction of Hwy 395 on Las. Co. road 338 (Smoke Creek Road). 1554 Comment
  POM45991  Astragalus malacus R. M. Austin 1897-05 400 Lassen Madaline plains. Comment
  RSA201487  Astragalus pulsiferae var. pulsiferae J. T. Howell 1955-7-19 30818 Lassen East side of Beckwourth Pass 1493 Comment
  UC372929  Astragalus pulsiferae var. pulsiferae Marcus E. Jones, A. M. 1897-6-19 Lassen Chat 1615 Comment
  SEINET10841190  Astragalus purshii Mary Susan Taylor 1974-5-4 Taylor 224 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  HSC82244  Astragalus purshii var. lectulus Thomas W. Nelson, Jane P. Nelson 1980-7-6 5989 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  RSA121818  Astragalus purshii var. purshii G. A. Fischer, Irwin H. Johnson 1933-7-14 F- 249 Lassen Forest: Lassen. 1784 Comment
  RSA0006859  Astragalus purshii var. purshii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1944-5-29 5957 Lassen Susanville 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
  CHSC117211  Astragalus purshii var. tinctus Lowell Ahart; John Dittes 2016-6-7 20984 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC82576  Astragalus spaldingii unknown 1892-6-22 Lassen Honey Lake Comment
  UC13372  Astragalus whitneyi M. S. Baker and F. Nutting 1894-7-3 Lassen s side Dixey Mts. Comment
  CHSC67217  Astragalus whitneyi var. confusus James D. Jokerst 1991-5-29 3303 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CDA7885  Astragalus whitneyi var. confusus G. Schoolcraft 1985-5-22 s.n. Lassen Along A2 about 5 miles S of Adin, CA. Comment
  SD109653  Astragalus whitneyi var. confusus James Vale, Keith Wagnon, Walter & Irja Knight 1981-5-24 4136 Lassen 3 mi S of Adin on Hwy #139 1372 Comment
  JEPS94136  Athysanus pusillus Vernon H. Oswald and Lowell Ahart 1998-5-22 9130 Lassen ca. 5 mi. n.e. Doyle (rd. to Summit of Fort Sage Mts., 2.7 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1463 Comment
  CHSC64780  Atriplex argentea var. hillmanii Vernon H. Oswald 1995-6-7 6842 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an unsigned dirt road near milepost 19.5 just e of Skedaddle Creek, e of Wendel, ne of Susanville. 1231 Comment
  CHSC109990  Atriplex canescens var. canescens L. P. Janeway; B. Castro 2012-7-2 10920 B Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake, 1.5 km north of Wendel, 0.8 km east of the road to Wendel. 1241 Comment
  CHSC110306  Atriplex confertifolia L. P. Janeway; B. Castro 2012-7-2 10924 Lassen Modoc Plateau. Honey Lake Valley, northeast side of Honey Lake; 0.6 km west of Wendel Road, 4.8 air km southeast of Wendel. 1221 Comment
  CAS-BOT-BC172657  Atriplex gardneri var. falcata Gary Schoolcraft 1983-6-20 1012 Lassen Mud Flat 1341 Comment
  CHSC76093  Atriplex heterosperma Lowell Ahart; Vernon Oswald 1999-9-13 8208 Lassen On the west side of the dirt road and 1/2 mile south of the isgn in station, Honey Lake Wildlife Area, 4 1/2 miles (air) southeast of Standish. 1176 Comment
  UCD50220  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  UCD97425  Atriplex hortensis Daniel B. Marcum 2005-6-3 Lassen Vestal Ranch, maybe 6 miles SE of McArthur CA, Pitville, Lassen County. 1005 Comment
  SEINET13710039  Atriplex triangularis Lowell William Ahart, Lowell William Ahart 1999-1 8209 Lassen Honey Lake Wildlife Area, 5.5 Mi SE Standish Comment
  CHSC100131  Atriplex truncata L. P. Janeway 2008-8-2 9528 Lassen Modoc Plateau. Just above the flats along the south side of Rush Creek; south side of Smokey Creek Ranch Road 1.8 km west of the CA-NV line. 1349 Comment
  UC1136349  Atriplex truncata E. Sawyer 1935-6-27 217 Lassen Long Valley Sierraville Quad., Long Valley Comment
  UC1924265  Avena fatua Debra Valov 2004-6-9 2004265 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 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-BC106494  Balsamorhiza hookeri Clarence Quick 1963-7-12 63 -38 Lassen Blacks Mountain Experimental Forest east of Halls Flat 1859 Comment
  UC1035988  Balsamorhiza hookeri Helen K. Sharsmith 1955-6-22 4501 Lassen 5 miles beyond Blue Lake on road to Likely. Warner Mountains, Modoc National Forest Comment
  UC1137702  Balsamorhiza hookeri A. Simontacchi 1940-5-27 790 Lassen 1.1 mi sw of Dixie Spring (Halls Flat); Halls Flat 1699 Comment
  CAS-BOT-BC106490  Balsamorhiza hookeri Ella Dales Cantelow 1941-5-22 3550 Lassen Fredonyer Pass, 13 1/2 mi. w. of Susanville Hwy #36 Comment
  RSA74324  Balsamorhiza hookeri var. lagocephala Milo S. Baker 1952-5-23 12432 Lassen Hwy. 36, 1/2 mi West of [Fredonyer] Pass 1752 Comment
  CHSC54172  Balsamorhiza macrolepis var. platylepis Vernon H. Oswald 1991-5-28 4622 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  SJSU8894  Balsamorhiza sagittata W. Savage 1971-7-20 722 .5 Lassen c. 2 mi N of Milford near W side Honey Lake 1264 Comment
  CAS-BOT-BC16435  Barbarea orthoceras John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49464 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  SEINET11193258  Barbarea orthoceras G. Schoolcraft 1998-5-20 2711 Lassen Willow Valley, intersection of Hwy 139 and Eagle Lake Road. 1494 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
  CDA36736  Bassia hyssopifolia Richard R. Halse 2010-8-25 8088 Lassen Along State Hwy 139 ca 26.2 miles north of Susanville on the northeast shore of Eagle Lake. Comment
  RSA783700  Bassia hyssopifolia R. R. Halse 2010-8-25 8088 Lassen Along State Hwy 139 ca. 26.2 mi N of Susanville on NE shore of Eagle Lake. 1559 Comment
  JEPS121246  Beckmannia syzigachne Lowell Ahart, John Dittes 2013-7-22 18871 Lassen 40 yards S of the man-made pond, about 110 yards N of the four tall poles, Ash Creek Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  SD52270  Beckmannia syzigachne F. Stephens 1894-8-11 11766 Lassen Comment
  UCD56795  Beckmannia syzigachne R. Tofsrud 1947-7-1 247 Lassen Between Bieber and Nubieber. Comment
  CHSC111100  Bidens cernua Lowell Ahart; John Dittes 2012-7-9 18295 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC1553384  Bidens cernua G. Schoolcraft 1988-8-10 1848 Lassen 10 mi ne of Susanville (along Hwy 139 at Jack's Valley Spring); Highway 139, Jack's Valley Spring 1505 Comment
  CAS-BOT-BC413000  Bistorta bistortoides A. M. Vollmer; L. Beane 1953-7-1 65 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC413084  Bistorta bistortoides George W. Gillett 1957-7-22 882 Lassen Lassen Volcanic National Park. Snag Lake. Campsite near south end of lake 1850 Comment
  SBBG29153  Bistorta bistortoides A. A. Heller 1938-6-23 15141 Lassen 2 mi E of Westwood Comment
  CAS-BOT-BC127954  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC128042  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3733 Lassen 2 mi. S. of Ravendale 1463 Comment
  CAS-BOT-BC128050  Blepharipappus scaber David D. Keck; J. Clausen 1935-6-24 3725 Lassen 5 mi. S. of Likely (Modoc Co.) 1402 Comment
  CHSC4779  Blepharipappus scaber R. Carter 1967-6-27 555 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology station. 1584 Comment
  CHSC48131  Blepharipappus scaber Vernon H. Oswald 1986-6-15 2112 Lassen Hwy 36, 15.0 mi E of Plumas-Lassen Co. line, 3.5 mi E of Fredonyer Pass. 1508 Comment
  CHSC5201  Blepharipappus scaber 1944-7-1 Lassen Eagle Lake. 1584 Comment
  SEINET11261378  Blepharipappus scaber Stanley L. Welsh, N. Duane Atwood 2001-6-14 28156 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1539 Comment
  SEINET11261379  Blepharipappus scaber Stanley L. Welsh, N. Duane Atwood 2001-6-14 28151 Lassen E of Hwy 395, rd to Rams Horn Spring campground.; 0 1540 Comment
  SEINET11261380  Blepharipappus scaber Robert L. Johnson, Mikel R. Stevens 2015-7-10 3922 Lassen 1.9 rd miles west of jct with Hwy 395 on Dawn Dr on E side of Shaffer Mountain. Ca 18 air mi ene of downtown Susanville.; 0 1545 Comment
  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
  UC773892  Blepharipappus scaber L. R. Short 1936-6-10 S- 415 Lassen Burgess Spr. Exp. Range 1798 Comment
  UC87371  Blepharipappus scaber T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  CDA10533  Blepharipappus scaber T. C. Fuller 1963-6-1 10620 Lassen Road to Susanville, 2.0 miles south of Pittville. 0 Comment
  RSA603799  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3725 Lassen 5 miles south of Likely. 1402 Comment
  SEINET10846329  Blepharipappus scaber Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2600 Lassen Hallelujah Jct. intersection of U.S. Hwy. 395 & CA Hwy. 70; in open waste area adjacent to Artemisia tridentata community. 1433 Comment
  UC1181375  Blepharipappus scaber R. W. Thorp and G. I. Stage 1960-6-11 60 -63 Lassen 6.5 mi north of Termo Comment
  CAS-BOT-BC16826  Boechera Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16325 Lassen Along southern shore of Eagle Lake. Comment
  CAS-BOT-BC13905  Boechera lemmonii Eben McMillan 1968-6-28 140 -2 Lassen South slope of Mount Lassen. Comment
  CHSC29878  Boechera pinetorum Robin Ondricek 1978-6-6 39 Lassen Along Co. Rd. 201, 2.8 mi W of jct. with Co. Rd. A1. 1569 Comment
  CAS-BOT-BC14637  Boechera rectissima John Thomas Howell; Gordon H. True 1973-7-31 50063 Lassen Sierra Nevada. On road from Janesville to Thompson Peak, Diamond Range. 1783 Comment
  CHSC117221  Boechera rectissima Lowell Ahart; John Dittes 2016-6-7 20981 Lassen 30 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC60730  Boechera retrofracta Vernon H. Oswald; Lowell Ahart 1993-6-14 5512 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. Roadside. 1810 Comment
  JEPS118280  Boechera retrofracta Lowell Ahart, John Dittes 2011-6-20 17509 Lassen Graded edge of the Ash Valley Road, 3,120 feet south of Ash Creek Campground, about 6.5 miles (air) southeast of Adin 1511 Comment
  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
  CAS-BOT-BC25511  Boechera retrofracta Clarence Roy Quick 1961-6-21 61 -24 Lassen Black Mountain Experimental Forest northeast of Lassen Peak. Forest adjacent to Road 21. 1798 Comment
  JEPS88209  Boechera sparsiflora Vernon H. Oswald and Lowell Ahart 1996-6-17 7774 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, slope at the bridge spanning the Susan R. on n. side of Hwy 36); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  UC1126562  Boechera sparsiflora H. P. Hagge 1929-9-19 40 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  SEINET10453123  Boisduvalia densiflora Mary Susan Taylor 1982-8-19 Taylor 5032 Lassen T27N R14E ne sec 36. Milford quad. Along dirt rd 326, ca. 0.5 mi e of its jct with Milford Grade, ca. 1 air mi se of Milford. In ditch on roadside; 4300 ft. 1310 Comment
  POM312611  Boisduvalia densiflora var. densiflora H. L. Mason 1947-8-11 13495 Lassen Hwy 81, west margin of Lower Lake, north boundary of Lassen County with Modoc County Comment
  JEPS95898  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1999-9-13 8221 Lassen just south of the parking area; about 1 mile south of the sign in station; Honey Lake Wildlife Area; 5 1/2 miles (air) southeast of Standish 1207 Comment
  JEPS18771  Brickellia microphylla var. microphylla R. F. Hoover 1940-10-5 4674 Lassen pass between Shaffer Mt. and Warren Peak Shaffer Mt. Comment
  CHSC60929  Brodiaea coronaria subsp. coronaria Vernon H. Oswald; Lowell Ahart 1993-7-8 5676 Lassen N side of 34N12 just E of the railroad at Halls Flat Well, ca. 11 mi (air) NNW of Poison Lake. 1737 Comment
  RSA712894  Brodiaea coronaria subsp. coronaria L. P. Janeway 2005-7-3 8455 Lassen High Cascade Range: Near large shallow stock pond 0.3 km west of Road 35N38 (road to Blacks Ridge Lookout Tower), 1.9 road km south or Road 22; 2.3 air km northwest of the lookout. 1580 Comment
  UC1137774  Brodiaea coronaria subsp. coronaria August L. Hormay 1934-7-2 Lassen Black Mtn. Headquarters Lassen National Forest 1706 Comment
  CAS-BOT-BC144333  Bromus R. E. Frenkel 1964-7-12 666 Lassen On California Highway 299, 1.5 mile west of Bieber. 1249 Comment
  CAS-BOT-BC149497  Bromus briziformis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Few miles north of Leitchfield in lava country. Comment
  UCD57490  Bromus briziformis R. M. Love 1944-7-10 s.n. Lassen South of Ravendale. Comment
  SEINET3921581  Bromus briziformis Noel H. Holmgren, Patricia K. Holmgren 1980-7-3 9489 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of U.S. Highway 395, 14.5 km (9 mi) airline distance southeast of Ravendale.; 0 1700 Comment
  UC773968  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1820 Comment
  CHSC34410  Bromus carinatus var. marginatus Terrence Finn 1979-6-14 1 Lassen 0.75 mi. sw of Hallelujah Junction. 1524 Comment
  UCD59098  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Along Hwy. 36, 4.5 miles west of Susanville. 1432 Comment
  UCD59149  Bromus carinatus var. marginatus H. P. Hagge 1929-9-16 s.n. Lassen Logan Mtn. 1828 Comment
  UC1024682  Bromus ciliatus Leo Whitney 1934-7-26 2164 Lassen 7-8 mi sw of Eagle Lake (near Bridge Creek, Lassen National Forest, Bridge Creek Camp); Lassen National Forest, Bridge Creek Camp 1737 Comment
  CAS-BOT-BC155939  Bromus commutatus A. A. Beetle 1941-6-28 2817 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. 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
  UCD58446  Bromus commutatus A. A. Beetle 1941-6-28 2809 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  CHSC61598  Bromus hordeaceus Arthur C. Barret 1918-6-3 16 Lassen Plumas National Forest, Laufman Ranger Station. 1463 Comment
  SEINET10717734  Bromus japonicus Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9750 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  UC506916  Bromus orcuttianus George A. Fischer, Irwin H. Johnson 1933-7-14 F 261 Lassen Lassen National Forest 1783 Comment
  POM112560  Bromus secalinus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1131325  Bromus suksdorfii A. Simontacchi 1940-6-8 836 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  CAS-BOT-BC161420  Bromus tectorum Margaret Williams; Steven Williams 1974-7-26 74 -L-2 Lassen Sierra Nevada. Near Hallelujah Junction, west of Highway 395 and south of Highway 70. 1493 Comment
  HSC9348  Bromus tectorum C. S. Chavez 1965-5-1 60 Lassen 20 mi. N of Susanville on Hwy. 395. 1220 Comment
  JEPS107312  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
  RSA152589  Bromus tectorum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16341 Lassen 13.5 mi. E. of Susanville Comment
  UC773967  Bromus tectorum L. R. Short, J. Warren 1936-6-9 S 409 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1859 Comment
  UCD59756  Bromus tectorum August L. Hormay 1932-5-20 s.n. Lassen Lassen National Forest. Hat Creek. 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
  SEINET10933521  Bromus tectorum var. glabratus Douglas G. LeDoux 1973-5-25 LeDoux 884 A Lassen Collected 3 mi n of milford, on hwy 395 at honey lake campgrounds. Comment
  UC1142960  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Westwood Junction Lassen National Forest 1737 Comment
  UC1101514  Callitriche verna Verne Grant and Irving Schneider 1947-9-6 8385 Lassen creek midway between Eagle Lake and Susanville Comment
  UC1101519  Callitriche verna Herbert L. Mason and Verne Grant 1947-7-9 13294 Lassen 5 mi e Bieber Comment
  UC17869  Callitriche verna M. S. Baker and Frank Nutting 1894-7-2 Lassen s side Dixie Mts. Comment
  SEINET10531060  Calocedrus decurrens Katherine L. Morris 1973-5-25 Morris 226 Lassen Collected in an area of sugar pine, Libocedrus, and yellow pine. 2.5 mi N of Jct 36 & Hwy 44. Comment
  JEPS124668 Image available Calochortus leichtlinii Laurel Loeblich 1964-6-30 59 Lassen Highway 139 8.7 miles north of Susanville. Comment
  POM253058  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen Along Highway 36 in the valley east of Fredonyer Pass Comment
  UC1537211  Calochortus macrocarpus Gordon H. True Jr. 1936-6-26 542 Lassen near Litchfield (w slope of Rice Canyon); Rice Canyon 1463 Comment
  RSA0120949  Caltha biflora K. M. Meyer, A. Townesmith 2007-7-21 145 Lassen Lassen National Forest. 3.3 miles on road 110, off Hwy A21. 1920 Comment
  UCD105297  Caltha leptosepala K. M. Meyer; A. Townesmith 2007-7-21 145 Lassen Lassen National Forest. 3.3 mi. on rd. 110, off Hwy. A 21. 1920 Comment
  CHSC34600  Calyptridium umbellatum Cindy Prouty 1978-7-10 17 Lassen Colman L. area, SE of Eagel L. 1962 Comment
  HSC12524  Calyptridium umbellatum Marcus E. Jones 1897-6-28 Lassen Diamond Mtn., Susanville, Perkin's Ranch 2226 Comment
  SEINET196249  Calyptridium umbellatum F. Farris 1936-6-15 Lassen Eagle Lake Rd 1676 Comment
  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
  CHSC6272  Camassia quamash subsp. breviflora J. B. Kimsey 1946-6-11 Lassen Aspen Grove, Pine Creek. 1584 Comment
  CAS-BOT-BC497551  Camassia quamash subsp. breviflora Elmer I. Applegate 1934-5-4 8936 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC64770  Camelina microcarpa Vernon H. Oswald 1995-5-31 6807 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 1.3 mi e of Hwy. 395, between Litchfield and Ravendale. 1353 Comment
  CHSC93245  Camelina microcarpa John Dittes; Scott Chamberlain 2004-6-28 1019 Lassen Modoc Plateau; Long Valley; ca. 4.4 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 2.6 air-miles west of Hwy 395, ca. 0.9 air-mile east of Plumas County line; near road. 1465 Comment
  HSC63958  Camissonia claviformis subsp. cruciformis Teresa Prendusi 1980-5-6 Lassen Honey Lake area Comment
  CHSC64795  Camissonia contorta Vernon H. Oswald 1995-5-24 6781 Lassen Modoc Plateau. 1.8 mi s of Wendel Rd. (Lassen 320) on an insigned dirt road 0.6 mi e of milepost 19.0, just e of Skedaddle Creek. On the e side of the road ca. 0.2 mi n of the railroad. 1219 Comment
  RSA186635  Camissonia contorta Peter H. Raven 1962-5-28 17872 Lassen 4.8 miles north of Milford Comment
  NY851536  Camissonia minor A. Tiehm 1980-5-29 5752 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 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
  UC107616  Camissonia pubens T. S. Brandegee 1892-6-22 Lassen Honey Lake 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
  RSA74348  Camissonia tanacetifolia Milo S. Baker 1952-5-23 12420 Lassen Wet Spot, E of Chester, Hwy 36. Comment
  RSA0011501  Camissonia tanacetifolia Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46978 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  RSA132679  Camissonia tanacetifolia I. L. Wiggins, Dorothy Wiggins 1961-6-11 16364 Lassen Along California State Highway 139, ca. 1 mile N of Grasshopper Valley. Comment
  RSA12158  Camissonia tanacetifolia subsp. quadriperforata Wayne E. Sawyer 1935-6-27 219 Lassen Long Valley. 1311 Comment
  RSA512846  Camissonia tanacetifolia subsp. tanacetifolia J. T. Howell, Gordon H. True 1973-8-1 50209 Lassen Sierra Nevada: Headwaters of Baxter Creek, east slope of Diamond Range, south of Susanville. 2165 Comment
  CAS-BOT-BC160865  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven 1963-5-29 18426 Lassen Along U. S. Highway 395, 0.9 miles north of Ravendale Comment
  RSA38463  Camissonia tanacetifolia subsp. tanacetifolia P. A. Munz 1947-5-19 11883 Lassen Madeline 1677 Comment
  UCD114153  Capsella bursa-pastoris L. R. Short; J. Warren 1936-6-9 S- 408 Lassen Burgess Spring Experimental Range; around old sheep bed-grounds. 1844 Comment
  JEPS87505  Cardamine breweri Vernon H. Oswald and Lowell Ahart 1993-8-3 5743 Lassen ca 13 mi (air) n. Lake Almanor (s.w. edge Cooper Swamp located e. of Silver Lake just e. of the Caribou Wilderness); Cooper Swamp 1932 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
  UC117814  Cardamine nuttallii var. covilleana Brandegee 1892-7-2 Lassen Susanville Comment
  CHSC99732  Cardamine oligosperma Lowell Ahart; John Dittes 2008-6-20 14942 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 7.0 miles (air) northeast of Bieber. 1263 Comment
  CHSC112408  Cardamine pensylvanica Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18729 Lassen Drainage filled with dirt from construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UCD163081  Carex Jack Major 1966-6-24 Lassen Modoc National Forest. Long Valley. 3 airline miles southwest of Patterson Guard Station. (Exact location unknown. Coordinates estimated by label maker.) 1981 Comment
  JEPS96097  Carex aquatilis var. aquatilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7813 Lassen Bizz Johnson Trail at milepost 6.0 e Devils Corral Trailhead (<trailhead> located off Hwy 36 w of Susanville); Modoc Plateau 1420 Comment
  CHSC60428  Carex athrostachya Mary Ann Showers 1992-6-13 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  CHSC89754  Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC1100437  Carex athrostachya Herbert L. Mason 1947-7-9 13300 Lassen 5 mi E of Bieber Comment
  UC506936  Carex athrostachya George A. Fischer, Irwin H. Johnson 1933-7-12 F 237 Lassen Patterson flat 1737 Comment
  POM313130  Carex athrostachya H. L. Mason 1947-7-9 13300 Lassen Irrigation ditch 5 miles east of Bieber. Comment
  CHSC96431  Carex cusickii Gordon Leppig; J. Cromwell 1997-7-27 620 Lassen Modoc National Forest. Blue Lake Ranch. 1970 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
  HSC66737  Carex douglasii J. P. Smith, J. O. Sawyer 1971-5-23 4664 Lassen Along Hwy. 139, 1 mi. S of jct. with road to Thermo Comment
  JEPS100621  Carex douglasii Dean W. Taylor 1974-6-14 3716 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC1736284  Carex douglasii Dean W. Taylor 1974-6-14 3716 Lassen Poison Lake, on Hwy 44 ca. 2 miles W from the junction with Pittville Road 1615 Comment
  UC773860  Carex douglasii L. R. Short and Wm. Gansberg June 1936 S- 419 Lassen Burgess Spring Experiment Range 1856 Comment
  CDA33049  Carex douglasii T. C. Fuller 1963-7-15 10890 Lassen South side of road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  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
  UC1133496  Carex filifolia var. erostrata A. Simontacchi 1940-5-17 729 Lassen 5.7 mi ssw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET7558599 Image available Carex filifolia var. erostrata John Thomas Howell 1934-7-6 12451 Lassen Harvey Valley. Comment
  CAS-BOT-BC34001  Carex filifolia var. filifolia Louella Bass 1973-4-13 EV 14 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  SEINET7559362 Image available Carex fracta Barbara L. Wilson, Richard Brainerd, Bruce Newhouse 2004-8-28 11194 Lassen Near Bluff Falls in the Lassen National Forest, approximately 0.7 air mile south of the south boundary of Lassen Volcanic National Park on Highway 89. 1981 Comment
  CAS-BOT-BC22236  Carex haydeniana John Thomas Howell 1934-6-14 12164 Lassen Near Lost Lake. Warner Mountains. 2438 Comment
  CAS-BOT-BC20938  Carex heteroneura John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50698 Lassen South and southeast of Diamond Mountain. 2286 Comment
  CHSC61065  Carex heteroneura var. heteroneura Vernon H. Oswald; Lowell Ahart 1993-8-3 5744 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC60435  Carex hoodii Mary Ann Showers 1992-6-12 2517 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  CHSC114410  Carex infirminervia Don Lepley 2014-6-26 Lassen Lassen National Forest; Eagle Lake Ranger District. 6.5 or so air miles south of Susanville, in alder patch below the second aspen stand in an ephemeral drainage corridor upslope from the end of Road 29N07A. 1719 Comment
  HSC95182  Carex interior Gordon Leppig 1998-8-17 1055 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC61066  Carex lasiocarpa Vernon H. Oswald; Lowell Ahart 1993-8-3 5752 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. In the NW part of the swamp. 1932 Comment
  CHSC65365  Carex limosa Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7217 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likeley. 1859 Comment
  CHSC96450  Carex limosa Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 543 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CHSC59187  Carex multicaulis Vernon H. Oswald; Lowell Ahart 1992-9-15 5217 Lassen Lassen Volcanic National Park. Ca. 0.3 mi SW of Island Lake, on the NW foot of Bonte Pk., ca. 1.5 mi E of Juniper Lake campgrounds. 2133 Comment
  JEPS120112  Carex nebrascensis Lowell Ahart, John Dittes 2012-7-9 18298 Lassen About 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1142949  Carex nebrascensis A. L. Hormay 1941-6-18 7 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UCD140678  Carex nebrascensis Beecher Crampton 1964-6-26 7077 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 Comment
  CAS-BOT-BC119715  Carex nervina Clare B. Hardham 1961-6-17 7508 Lassen Baxter Creek south of Susanville. Comment
  CAS-BOT-BC119041  Carex pellita John Thomas Howell 1976-7-19 s.n. Lassen On Gold Run Creek SW of Susanville 1386 Comment
  CAS-BOT-BC119043  Carex pellita George Wilson Gillett 1957-7-26 906 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CHSC66270  Carex pellita Vernon H. Oswald; Lowell Ahart 1996-6-24 7892 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. At the southern-most spring on the E side of the meadow 1633 Comment
  SEINET13407108  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek 1768 Comment
  SEINET7571315 Image available Carex petasata L. P. Janeway 2004-6-26 8153 Lassen Poison Lake 7.5' quad, High Cascade Range, about 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  SEINET10817202  Carex phaeocephala Willard W. Eggleston 1927-7-11 Eggleston 21474 Lassen Bogard Ranger Station, Lassen Forest. 1500 Comment
  CAS-BOT-BC118398  Carex praegracilis John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49458 Lassen Elysian Valley, west of Janesville. 1325 Comment
  CAS-BOT-BC118401  Carex praegracilis T. C. Fuller 1980-8-6 20319 Lassen Dry drainageway of Rush Creek, N of Smoke Creek Ranch Road, 2 km W of the stateline, Comment
  CHSC91377  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11859 Lassen On the west side of a 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
  CHSC91379  Carex praegracilis Lowell Ahart; John Dittes 2005-6-1 11864 Lassen On the west side of a 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
  JEPS118273  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
  UC1583985  Carex praegracilis G. Schoolcraft 1990-6-12 2087 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  CAS-BOT-BC118403  Carex praegracilis H. M. Hall; E. B. Babcock 1903-6-29 4308 Lassen Mill Creek 2438 Comment
  CAS-BOT-BC118741  Carex preslii John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49469 Lassen Elysian Valley, west of Janesville 1325 Comment
  HSC48221  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19176 Lassen Harvey Valley near Cone Springs Comment
  HSC48338  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19244 Lassen 2 mi. N of Westwood Comment
  JEPS114623  Carex sheldonii Lowell Ahart, John Dittes 2008-6-22 15045 Lassen High dry bank of a levee, north of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.5 miles (air) northeast of Bieber 1267 Comment
  POM81761  Carex sheldonii Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CHSC96453  Carex simulata Gordon Leppig; J. Cromwell 1997-7-27 619 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  HSC95305  Carex simulata Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 514 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC77248  Carex subfusca G. Schoolcraft 1997-7-9 2608 Lassen S of Doyle Corral. 1706 Comment
  CAS-BOT-BC116607  Carex subfusca Clare B. Hardham 1971-8-22 18383 Lassen Diamond Mountain streambed. 2133 Comment
  CAS-BOT-BC116611  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  CAS-BOT-BC116613  Carex subfusca Hans Leschke 1958-8-17 1568 Lassen Reflexion Lake 1792 Comment
  CAS-BOT-BC116618  Carex subfusca B. Clear 1938-7-14 s.n. Lassen Lily Ponds, Manzanita Lake, Lassen Park. 1781 Comment
  UC1142963  Carex utriculata A. L. Hormay 1941-6-17 24 Lassen near Westwood (Meadow Lake); Lassen National Forest 1615 Comment
  HSC103651  Carex utriculata Thomas W. Nelson, Jane Nelson 1985-8-10 8009 Lassen Along north side of Silver Lake 1829 Comment
  HSC95285  Carex vesicaria Gordon Leppig 1998-8-17 1040 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS63615  Carex whitneyi Leland S. Smith 1922-7-23 75 Lassen Lassen National Forest Comment
  CAS-BOT-BC248944  Castilleja Mike Vasey 1990-6-30 9055 Lassen Ash Valley, along primitive road south of junction of Ash Valley Road and Spooner Road. Modoc National Forest 1500 Comment
  JEPS62334  Castilleja angustifolia John L. Strother 1970-5-23 954 Lassen ca 6 mi n Honey Lake 1280 Comment
  UC583392  Castilleja angustifolia Elmer I. Applegate 1934-5-4 8921 Lassen s of Secret Valley Comment
  CAS-BOT-BC249624  Castilleja applegatei subsp. pinetorum Francis W. Pennell 1940-6-9 25769 Lassen Route 36, Susanville 1371 Comment
  CHSC7751  Castilleja applegatei subsp. pinetorum Beverley J. Wise 1969-5-3 106 Lassen 28.4 mi. N.E. of Susanville. 1554 Comment
  JEPS81611  Castilleja applegatei subsp. pinetorum M. S. Taylor and B. Hammond 1982-8-27 5052 Lassen ca 6 air mi sw Doyle; Constantia Quad., Diamond Mts., Crystal Peak Area 2377 Comment
  JEPS81866  Castilleja applegatei subsp. pinetorum L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5842 Lassen About 2.5 miles west of Paynes Creek, along highway 36 to Mt. Lassen (6.5 miles northeast of Dales) Comment
  RSA747544  Castilleja applegatei subsp. pinetorum K. M. Meyer, A. Townesmith 2007-7-23 152 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
  UC1136982  Castilleja applegatei subsp. pinetorum George A. Fischer, Irwin H. Johnson 1933-7-14 F- 259 Lassen Grass Valley; Lassen National Forest, Forest and Range Experimental Statio 1783 Comment
  UC1374836  Castilleja applegatei subsp. pinetorum Noel H. Holmgren, John J. Fay, and Barton L. Bethers 1970-6-24 4372 Lassen 2 mi w Westwood (at edge of airstrip) 1554 Comment
  CAS-BOT-BC249620  Castilleja applegatei subsp. pinetorum F. Farris 1935-5-15 s.n. Lassen Ramsey ranch near Susanville Comment
  SJSU5841  Castilleja campestris J. W. Tilden 1958-6-27 1291 Lassen Madeline Comment
  JEPS62838  Castilleja campestris subsp. campestris John Weiler 1970-7-6 70188 Lassen 3.6 mi s Madeline (along Highway 395) 1371 Comment
  JEPS87488  Castilleja campestris subsp. campestris Vernon H. Oswald and Lowell Ahart 1993-7-8 5644 Lassen near se end Poison Lake (0.4 mi n of Highway 44, Pittville Rd (Lassen 111,36N01), near its intersection with 33N11); near se end Poison Lake 1709 Comment
  SEINET10549093  Castilleja chromosa Mary Susan Taylor 1982-5-29 Taylor 4568 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
  SEINET10457537  Castilleja disticha Morris 1973-5-25 MORRIS 221 Lassen Collected in an area of sugar pine, libcedrus, and yellow pine. 2.5 Mi n of jct 36 and hwy 44. Comment
  CHSC66262  Castilleja lacera Vernon H. Oswald; Lowell Ahart 1996-6-24 7842 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montana Meadow. 1633 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
  JEPS80683  Castilleja lacera L. R. Heckard and T. I. Chuang 1981-6-10 5534 Lassen about 0.5 mi w Almanor Inn (or n road to Route 89) 1371 Comment
  CHSC4817  Castilleja linariifolia R. Carter 1967-7-16 617 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca 12 mi n of Susanville, on s side of rd. Comment
  UC584315  Castilleja linariifolia G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2281 Lassen e slope and summit Diamond Mt.; Diamont Mt. 2194 Comment
  CAS-BOT-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-BC244891  Castilleja miniata anonymous 1927-7-1 40 Lassen Bogard R. S. pasture 1712 Comment
  POM44361  Castilleja miniata Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  JEPS22193  Castilleja pilosa Rimo Bacigalupi with S. Galen Smith 1957-6-28 6004 Lassen 5.9 mi s Madeline 1615 Comment
  RSA637591  Castilleja pilosa Michael A. Vincent 1999-6-9 8584 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  POM43075  Castilleja psittacina Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC108002  Castilleja tenuis Lowell Ahart; John Dittes 2011-6-20 17499 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
  JEPS96025  Castilleja tenuis Vernon H. Oswald and Lowell Ahart 1996-6-24 7841 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi ne of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1567425  Castilleja tenuis G. Schoolcraft 1989-6-12 1913 Lassen Ash Valley RNA/ACEC Ash Valley 1554 Comment
  JEPS123842  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2015-7-14 20329 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  RSA0035394  Caulanthus major var. nevadensis Lowell Ahart, John Dittes 2008-6-20 14920 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
  CAS-BOT-BC48530  Ceanothus cordulatus A. M. Vollmer; L. Beane 1953-7-1 31 Lassen Along Halls Flat road, beginning 6 miles west of Susanville, to MacArthur 1554 Comment
  CAS-BOT-BC48706  Ceanothus cordulatus John Thomas Howell 1974-7-9 50480 Lassen Coniferous forest between Susanville and SW end of Eagle lake 1828 Comment
  HSC42297  Ceanothus prostratus S. Saufferer 1973-5-6 124 Lassen 4.5 mi W of Bieber along Hwy. 299 Comment
  HSC30197  Ceanothus prostratus var. laxus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19257 Lassen Harvey Valley near Cone Springs Comment
  UC1736108  Ceanothus prostratus var. prostratus Dean W. Taylor 1974-7-13 4067 Lassen Lassen National Forest, Thousand Lakes Wilderness, vicinity of Magee Pk, T33N R3E SE1/4 Sect. 27 2484 Comment
  HSC22955  Ceanothus velutinus John Pratt 1970-6-21 28 Lassen 1738 Comment
  HSC63932  Ceanothus velutinus var. velutinus Teresa Prendusi 1980-7-21 Lassen Fredonyer Peak near summit, N face 2424 Comment
  CAS-BOT-BC184969  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  RSA186849  Cenchrus longispinus T. C. Fuller 1965-10-13 14198 Lassen On north side of old road to Susanville, 1 mile west of Johnstonville. Comment
  CDA7222  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen East side of Highway 395 to Madelaine, 1.6 miles north of Termo. 0 Comment
  UC1229867  Centaurea diffusa T. C. Fuller 1962-8-28 9480 Lassen E side of Hwy 395 to Madelaine, 1.6 mi N of Termo Comment
  CDA7341  Centaurea squarrosa Loring White Jul 1950 Lassen Kramer Ranch, Big Valley, just over line Modoc-Lassen. 0 Comment
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May 19 2009
  CDA35515  Centaurea squarrosa CDFA Staff 1986-6-18 s.n. Lassen Near Nubieber, off Hwy 299. 0 Comment
  UC1042560  Centaurea virgata subsp. squarrosa Loring White 1950-8-9 Lassen Cramer Ranch Big Valley Comment
  RSA153397  Centaurea virgata subsp. squarrosa T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, Big Valley Comment
  RSA186838  Centaurea virgata subsp. squarrosa T. C. Fuller 1966-7-20 14961 Lassen Both sides of road from 0.1 to 0.9 miles south of the bridge at Pittville Comment
  SEINET13331057 Image available Centaurea virgata subsp. squarrosa T. C. Fuller unknown s.n. Lassen Big Valley Comment
  SEINET5343603 Image available Centaurea virgata var. squarrosa L. White 1950-8-9 s.n. Lassen Roadside and fields, Cramer Ranch, Big Valley Comment
  CHSC99981  Centromadia pungens subsp. pungens L. P. Janeway 2008-8-2 9523 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  CAS-BOT-BC400181  Ceratophyllum demersum Milo S. Baker July 25 3644 a Lassen Eagle Lake Comment
  CAS-BOT-BC400183  Ceratophyllum demersum D. Toren; B. Trowbridge 1975-6-19 5183 Lassen Blue Lake 1828 Comment
  CDA25720  Cercocarpus ledifolius T. C. Fuller 1963-7-15 10899 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 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
  JEPS126473  Cercocarpus ledifolius var. intermontanus Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-8-4 CA 350 -063 Lassen Take 139 north to Fredonyer Peak. Comment
  CAS-BOT-BC143807  Cercocarpus ledifolius var. ledifolius M. B. Kildale 1926-9-11 2789 Lassen 8-10 miles north of Susanville 1524 Comment
  CHSC12418  Cercocarpus ledifolius var. ledifolius Anne Linda Brisk 1969-6-19 5 Lassen 1/4 mi NE of ELBS. 1554 Comment
  UC1136909  Cercocarpus ledifolius var. ledifolius L. R. Short 1936-9-30 S 507 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1783 Comment
  JEPS112814  Chaenactis douglasii Dean W. Taylor 1974-6-14 3723 Lassen Plumas National Forest; Janesville Grade Road, at summit ca. 4 mi SSW of Janesville 1706 Comment
  CDA10715  Chaenactis douglasii var. achilleifolia T. C. Fuller 1959-7-7 Lassen Highway 395, 1.6 miles south of Ravendale. 0 Comment
  CHSC75451  Chaenactis douglasii var. douglasii Vernon H. Oswald 1999-6-9 9741 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
  CAS-BOT-BC276610  Chaenactis douglasii var. douglasii David D. Keck; J. Clausen 1935-6-24 3737 Lassen 2 miles S of Ravendale 1464 Comment
  CAS-BOT-BC141744  Chamaebatiaria millefolium John Thomas Howell 1934-7-9 12519 Lassen Pine Creek Flat Comment
  CHSC21172  Chamaebatiaria millefolium M. S. Taylor 1975-5-4 220 Lassen Ca. 1/4 mi e of Eagle Lake Field Station, ca. 13 mi ne of Susanville. Comment
  CHSC58521  Chamaesaracha nana Vernon H. Oswald 1992-7-3 5059 Lassen Lassen Volcanic Park. Trail along Grassy Creek between Horseshoe and Snag lakes, ca. 0.1 mi NE of the trail to Cameron Meadow. On slope bordering the trail. 1975 Comment
  UC1125091  Chamaesaracha nana Robert W. Gardner 1937-6-20 G- 23 Lassen Burgess Spring Experimental Range; Halls Flat Quad. 1699 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
  JEPS97305  Chamaesyce serpillifolia subsp. serpillifolia Vernon H. Oswald and L. Ahart 1995-8-14 7178 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a Mud Flat, 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  SEINET9445226  Chamaesyce serpyllifolia M. J. Williams 1974-7-29 74 -L-47 Lassen S of Hwy 70, 2 miles W of Hallelujah Junction. 1494 Comment
  UC17811  Chamaesyce serpyllifolia M. S. Baker and Frank Nutting 1894-7-24 Lassen Willow Creek Comment
  UC1924223  Chamaesyce serpyllifolia var. serpyllifolia Debra Valov 2004-6-8 2004251 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UC62593  Cheilanthes intertexta Baker and Nutting 1894-7-3 Lassen Dixey Mts Comment
  JEPS95909  Chenopodium album Lowell Ahart 1999-9-13 8222 Lassen about 1/2 mile east of Lambert Lane; about 3 1/2 miles (air) southeast of Standish 1210 Comment
  CHSC106830  Chenopodium berlandieri Barbara Ertter 1987-7-24 7301 Lassen Ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road; meadow at head of streamlet. 1524 Comment
  POM312487  Chenopodium berlandieri var. zschackei Irving Schneider 1947-8-1 8229 Lassen Irrigation ditch running SW into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  CAS-BOT-BC426358  Chenopodium incognitum Margaret Williams; Steven Williams 1974-7-26 s.n. Lassen Near Hallelujah Junction 1493 Comment
  CDA23382  Chenopodium leptophyllum M. K. Bellue 1938-8-1 Lassen Butte Lake. 0 Comment
  CHSC58839  Chenopodium nitens Vernon H. Oswald; Lowell Ahart 1992-7-16 5103 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
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Nov 1 2014
  UCD149985  Chorispora tenella William Anderson 1963-5-7 s.n. Lassen Milford. Comment
  CHSC25128  Chrysothamnus Paul Lyman 1970-5-2 28 Lassen Bald Mountain; Janesville. On slope of Bald Mountain which lies 10 miles east of Susanville. Comment
  CHSC78477  Chrysothamnus humilis Beth Corbin 2000-7-24 979 Lassen Northeast of Poison Lake, just east of the Pittville Highway. 1705 Comment
  CHSC7637  Chrysothamnus viscidiflorus subsp. puberulus Beverley J. Wise 1969-9-29 15 Lassen 4.5 mi. north of Susanville on Hwy 139. Roadside. 1371 Comment
  CAS-BOT-BC105906  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 2386 Lassen Big Valley, 2 6/10 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC105909  Chrysothamnus viscidiflorus subsp. viscidiflorus Carl B. Wolf 1931-9-4 1271 Lassen Big Valley, 2.6 miles from Bieber on road to Alturas 1267 Comment
  CAS-BOT-BC162755  Chylismia claviformis subsp. cruciformis A. A. Heller 1938-6-23 15211 Lassen On an extensive flat north of Balls Canyon on U.S. Highway #395 Comment
  JEPS103168  Chylismia claviformis subsp. cruciformis Beth Corbin 2002-5-1 1065 Lassen Honey Lake Valley, about 2 mi SE of Wendel. 1234 Comment
  UC1537660  Chylismia claviformis subsp. cruciformis Gordon H. True Jr. 1937-7-10 791 Lassen mesa Skedaddle 1493 Comment
  CAS-BOT-BC279833  Cichorium intybus Louella Bass 1973-6-15 109 Lassen Elysian Valley 1325 Comment
  UC1037245  Cirsium andersonii Leo Whitney 1933-8-8 1994 Lassen near Poison lake, ca 23 m w (of Eagle Lake) Eagle Lake; Poison Lake 1828 Comment
  CAS-BOT-BC284385  Cirsium arvense John Thomas Howell; Gordon H. True 1973-8-1 50225 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville, Sierra Nevada 2133 Comment
  CDA1125  Cirsium canescens T. C. Fuller 1962-8-28 9479 Lassen 0.25 mi n. of Termo, Madelaine Plains; roadside, Hwy 395 to Madelaine. 0 Comment
  CHSC75452  Cirsium cymosum Vernon H. Oswald 1999-6-9 9740 Lassen Northeast of Susanville on County Rd. 216 (to Karlo and Biscar Wildlife Management Area) 0.4 mi west of Hwy. 395. Along the road. 1356 Comment
  CHSC7638  Cirsium cymosum Beverly J. Wise 1969-5-15 17 Lassen 23.8 mi. East of Susanville of Hwy 395. 1524 Comment
  SD113205  Cirsium cymosum Darley F. Howe 1964-7-31 3947 Lassen Near east bank of Blue Lake, Warner Mountains, Modoc National Forest. 1890 Comment
  CDA1262  Cirsium inamoenum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20380 Lassen West side of Smoke Creek Reservoir; drainage on east side of road above lake. Comment
  SEINET7144190  Cirsium occidentale var. candidissimum Noel H. Holmgren, John J. Fay; Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junction with Calif 70 (Halleluja Junction).; 0 1524 Comment
  UCD170227  Cirsium occidentale var. candidissimum K. M. Meyer; A. Townesmith 2007-7-21 143 Lassen Lassen National Forest. 1.3 miles on road 110, off Highway A21. Mixed Pine and populus forest. Near Susan River. 1821 Comment
  CAS-BOT-BC285517  Cirsium occidentale var. candidissimum Blanche Clear 1940-7-30 s.n. Lassen Between Manzanita Lake and Burney Falls. On highway Comment
  CDA1489  Cirsium ochrocentrum Lee Wheeler 1959-7-23 s.n. Lassen Richmond Rd., about 4 mi. SE of Susanville. (Janesville, SW of Johnstonville.) Comment
  RSA186825  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  RSA186826  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC280421  Cirsium ochrocentrum T. C. Fuller 1980-8-5 20311 Lassen East shore of Dodge Reservoir, 28 km. (17.5 mi.) northeast of Ravendale Comment
  CAS-BOT-BC280428  Cirsium ochrocentrum T. C. Fuller 1959-7-7 2737 Lassen M. A. Mallory ranch, Richmond Road, ca. 4 mi. SE/Susanville Comment
  CAS-BOT-BC286305  Cirsium scariosum John Thomas Howell 1934-7-6 12435 Lassen Harvey Valley Comment
  SEINET10474565  Cirsium scariosum Mary Merello 1993-6-27 Merello 745 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  SBBG7961  Cirsium scariosum var. americanum H. and M. Dearing 1938-7-1 2242 Lassen W of Susanville Comment
  UC1037273  Cirsium scariosum var. americanum Leo Whitney 1934-7-8 1765 Lassen meadow near Harvey Spring (ca. 14 mi w of Eagle Lake); Lassen National Forest, Harvey Valley 1737 Comment
  UC1119211  Cirsium scariosum var. americanum A. Simontacchi 1940-6-3 794 Lassen 8.3 mi se Alcohol Jacks Cabin; Lassen National Forest, Halls Flat Quad. 1706 Comment
  CDA1562  Cirsium scariosum var. americanum D. Chambers, M. Carstens 1979-8-22 s.n. Lassen Modoc National Forest, private inholding, south side of Juniper Creek. 0 Comment
  CDA1594  Cirsium undulatum T. C. Fuller 1965-10-13 14201 Lassen Madeline Plains E base of Dry Valley Ridge, 10 mi. W of Termo, 3 mi N of Termo-Grasshopper Rd. Comment
  CDA37717  Cirsium undulatum Breckenridge/Mitchell 2007-7-11 s.n. Lassen Madeline Plains, along Westside Road, from historic Basque homestead. 0 Comment
  CDA37870  Cirsium undulatum J. L. Johnson 1980-7-9 s.n. Lassen Madeline Plains. 0 Comment
  CHSC23510  Cirsium vulgare Wayne O. Baum 1971-7-6 71 -56 Lassen Slope of Gallatin Peak. 1981 Comment
  CAS-BOT-BC285730  Cirsium vulgare John Thomas Howell; Gordon H. True 1973-8-1 50160 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  CAS-BOT-BC233915  Cistanthe umbellata A. M. Vollmer; L. Beane 1953-7-1 32 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS88247  Clarkia gracilis subsp. gracilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7792 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead off Hwy. 36, just sw of parking area at Devils Corral Trailhead); Modoc Plateau 1420 Comment
  CHSC27720  Clarkia lassenensis Robert A. Schlising; S. Morey, D. Ikeda 1978-6-8 3284 Lassen E of Eagle Lake, on slopes between Lower Dry Lake and Murrers Upper Meadow. 1569 Comment
  UC930759  Clarkia lassenensis C. L. Hitchcock 1940-5-26 6610 Lassen ca. 12 mi n Fall River Mills; Fall River 1371 Comment
  CAS-BOT-BC164866  Clarkia rhomboidea Louella Bass 1973-5-29 EV 63 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC164869  Clarkia rhomboidea Clare B. Hardham 1961-6-16 7447 Lassen S. of Susanville Comment
  CHSC83619  Clarkia stellata L. P. Janeway 2001-6-28 7233 Lassen High Cascade Range. Southwest flank of Cone Mountain, 0.5 km southwest of the summit; along Road 33N41Y 0.5 km southeast of Road 33N41YD. 1955 Comment
  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-BC32957  Cleomella alata C. C. (Mrs.) Bruce 1898-6-1 2364 Lassen Shumway Comment
  UC1567444  Cleomella hillmanii G. Schoolcraft 1989-5-31 1883 Lassen 3 mi n Wendel Rd. (along Skedaddle Ranch Rd) 1463 Comment
  POM93741A  Cleomella parviflora Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CAS-BOT-BC423224  Cleomella plocasperma Arnold Tiehm 1980-5-29 5746 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel 1231 Comment
  CDA25308  Cleomella plocasperma T. C. Fuller 1980-8-6 20324 Lassen 0.2 km south of Smoke Creek Ranch Road, 2 km west of the state line, 28.8 km (18.6 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  JEPS83689  Cleomella plocasperma Staria S. Vanderpool and Richard Vanderpool 1986-6-8 1236 a Lassen 0.5 mi w Wendel (on paved county road) 1196 Comment
  SEINET5767254  Cleomella plocasperma D. S. Mapes 1942-7-13 s.n. Lassen 2 1/2 miles SW of Wendel, Honey Lake Basin 1067 Comment
  CHSC36478  Collinsia parviflora Margaret E. Halloran 1982-6-6 11 Lassen Pine Creek jst below fish trap where Pine Creek empties into Eagle Lake. 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
  RSA0059629  Collinsia parviflora Lowell Ahart, John Dittes 2011-6-20 17487 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1143037  Collinsia parviflora L. R. Short 1936-5-7 S 344 Lassen Lassen National Forest, Burgess Spring Experimental Range Burgess Spring Experimental Range; Lassen National Forest, Burgess Spring Experimental Range 1737 Comment
  HSC63960  Collinsia parviflora Teresa Prendusi 1980-5-19 Lassen Saddle Rock. 1524 Comment
  SEINET10548283  Collinsia parviflora Jeffrey Huber 1971-6-2 Huber 127 Lassen Approx 30 mi n of susanville, on calif hwy 139, in basalt, pinus artemesia Juniper assoc. 1646 Comment
  HSC75886  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19258 Lassen Harvey Valley near Cone Springs Comment
  CHSC23513  Collomia grandiflora Wayne O. Baum 1971-7-19 71 -77 Lassen E. slope of Gallatin Peak. 2042 Comment
  NY963534  Collomia grandiflora N. H. Holmgren 1980-7-4 9502 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale 1890 Comment
  OBI77560  Collomia grandiflora Anthony Baniaga 2011-7-5 419 Lassen Lassen Natl Forest. E of Willard Ck. Fredonyer Pass quad T29N R10e sec 25 NE of NW Comment
  UC1137779  Collomia grandiflora August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest/Forest and Range Exp't Station 2133 Comment
  CHSC25914  Collomia tinctoria K. R. Stern 1967-7-1 2470 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  CHSC92760  Collomia tinctoria L. P. Janeway 2005-7-4 8468 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  CHSC96716  Comarum palustre Gordon Leppig; T. LaBanca 1997-6-29 525 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  HSC95339  Comarum palustre Gordon Leppig, J. Cromwell 1997-7-27 607 Lassen Modoc National Forest, Blue Lake Ranch. 1970 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-BC286116  Conyza canadensis John Thomas Howell 1974-7-8 50503 Lassen Susanville 1295 Comment
  POM33281  Conyza canadensis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  POM107536  Corallorhiza maculata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 Comment
  POM107535  Corallorhiza striata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkins Ranch. 1829 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
  JEPS95014  Cornus sericea subsp. sericea Vernon Oswald and Lowell Ahart 1997-6-24 8611 Lassen 0.7 mi e of Lassen National Forest boundary (5.4 mi e of Gold Run Road (29N10), s of Susanville on n side of Diamond Mountain at a springy slope with streamlets along Forest Road 29N43); Diamond Mountain, Forest Road 29N43 1889 Comment
  CHSC77215  Corydalis caseana subsp. caseana G. Schoolcraft 1997-8-6 2657 Lassen Along w. fork of Gold Run Creek about 8 miles sw of Susanville. 1859 Comment
  CHSC5205  Crepis acuminata A. Santos 1946-6-10 Lassen Eagle Lake. Near Pelican Island. 1554 Comment
  UC1136839  Crepis acuminata George A. Fischer and Irwin H. Johnson 1933-7-14 F- 266 Lassen Lassen <National> Forest 1752 Comment
  UC581254  Crepis acuminata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2214 Lassen just w ridge crest between Willow Creek Valley and Horse Lake 1720 Comment
  CAS-BOT-BC290391  Crepis acuminata G. L. Stebbins, Jr.; E. B. Babcock 1936-6-7 1763 Lassen Near summit east of Red Rock 1818 Comment
  CAS-BOT-BC291553  Crepis intermedia G. L. Stebbins; J. A. Jenkins 1937-7-10 2315 Lassen Black Mountain about a mile below the summit 1950 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
  POM230914  Crepis monticola G. Ledyard Stebbins, J. A. Jenkins 1937-7-6 2193 Lassen Susanville, just west of the town, on 'Inspiration Point' Comment
  UC581275  Crepis monticola G. L. Stebbins Jr. and J. A. Jenkins 1937-7-14 2332 Lassen Burgess Springs Experimental Range 1700 Comment
  UC76004  Crepis monticola Milo S. Baker July, 1894 Lassen near Bieber; Big Valley, Vicker's Ranch Comment
  SD87658  Crepis monticola Frank W. Peirson 1926-6-22 6829 Lassen Lassen National Park Comment
  UC1368788  Crepis occidentalis John L. Strother 1970-5-23 955 Lassen about 6 mi n Honey Lake 1280 Comment
  UC31338  Crepis occidentalis M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mts.; s side Comment
  UC540880  Crepis occidentalis David D. Keck and J. Clausen 1935-6-25 3759 Lassen Susanville; just w of town 1340 Comment
  UC581267  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2304 Lassen w Milford (crest of range head of ridge); Stony Ridge 1930 Comment
  RSA647829  Crepis occidentalis Marion P. Harthill 1971-6-21 209 Lassen Noble Emigrant Trail Monument, Susanville Comment
  UC1776658  Crepis occidentalis G. Schoolcraft 1998-6-8 2731 Lassen Hills N. of Wendel 1402 Comment
  CHSC60814  Crepis occidentalis subsp. conjuncta Vernon H. Oswald; Lowell Ahart 1993-6-28 5606 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC726060  Crepis occidentalis subsp. occidentalis A. A. Heller 1938-6-23 15201 Lassen valley e Fredonyer Pass (on State Hwy 36) 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
  JEPS117488  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
  JEPS107791  Crepis pleurocarpa Lowell Ahart, John Dittes 2005-6-2 11934 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
  RSA647827  Cryptantha Marion P. Harthill 1971-6-20 206 Lassen Susanville Comment
  NY1153787  Cryptantha affinis G. Schoolcraft 1990-6-12 2089 Lassen About 17 miles east of Ravendale in Pine Dunes RNA 1707 Comment
  CHSC64840  Cryptantha ambigua Vernon H. Oswald 1995-6-26 6918 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC106580  Cryptantha circumscissa C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 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
  NY1111960  Cryptantha gracilis G. Schoolcraft 1984-6-4 1193 Lassen Wendel Canyon 1524 Comment
  RSA0065500  Cryptantha hendersonii Marion P. Harthill 1972-6-17 817 Lassen Ravendale. 1524 Comment
  UC78602  Cryptantha pterocarya T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  CHSC71075  Cryptantha pterocarya var. pterocarya Vernon H. Oswald; Lowell Ahart 1998-5-22 9112 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  UC79293  Cryptantha simulans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  JEPS107447  Cryptantha watsonii Lowell Ahart, John Dittes 2005-6-1 11892 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
  NY704022  Cusickiella douglasii N. H. Holmgren 1978-6-11 8926 Lassen Upper Smoke Creek, southeast side of Observation Peak, 11.3 km (7 mi) northeast of Rye Patch Canyon summit, 21 km (13 mi) air distance east-southeast of Ravendale 1700 Comment
  CHSC112187  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 f 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the Crest. 1950 Comment
  RSA0049616  Cymopterus terebinthinus var. californicus Dean Wm. Taylor 2012-6-7 21237 Lassen Diamond Mountains; Gold Run Road 0.3 miles North of the crest 1950 Comment
  JEPS96081  Cyperus squarrosus Vernon H. Oswald and Lowell Ahart 1996-9-10 8276 Lassen Mountain Meadows Reservoir s.w. Westwood (edge of reservoir between R.R. and Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  SEINET6627868  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
  RSA324194  Dalea ornata A. Tiehm, Raymond Evans, James Young 1984-6-7 8592 Lassen Flats n the northwest side of Shaffer Mountain. 7.5 airmiles NNW of Litchfield. 1372 Comment
  CHSC5924  Damasonium californicum P. Balch 1955-6-25 Lassen Pine Creek, Eagle Lake. 1584 Comment
  CAS-BOT-BC445520  Damasonium californicum Clarence R. Quick 1962-6-17 62 23 A Lassen Swains Hole, south of Blacks Mountain Experimental Station 1554 Comment
  JEPS124717 Image available Damasonium californicum M. L. Wheelis 1964-6-30 137 Lassen Second bridge (to the north) between Bieber and New Bieber. Comment
  RSA0011557  Damasonium californicum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46995 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC189863  Danthonia californica John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49487 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 Comment
  UC1523708  Deinandra lobbii Gary Schoolcraft 1981-8-25 567 Lassen e Little Valley (at edge of reservoir in flat); Chico Flat 1377 Comment
  JEPS79214  Delphinium L. R. Heckard with R. C. Bacigalupi 1980-6-12 5254 Lassen ne Westwood (near golf course) 1554 Comment
  CHSC4983  Delphinium andersonii R. Clicquennoi 1967-6-24 38 Lassen Meadow. 4 mi e of Eagle Lake Biology Station at Murrer's Upper Meadow. 1524 Comment
  CHSC71132  Delphinium andersonii Vernon H. Oswald; Lowell Ahart 1998-5-22 9125 Lassen Road to summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  POM253334  Delphinium andersonii A. A. Heller 1938-6-23 15217 Lassen Along Hwy 395, between Termo and Madeline. 1524 Comment
  UCD55273  Delphinium andersonii Ellen Dean 2006-5-15 3083 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. Northern part of Johnston property near sandy wash. 1249 Comment
  CAS-BOT-BC217332  Delphinium andersonii Leland S. Smith 1917-6-2 23 Lassen Parsnip Creek - Sec 35. 1524 Comment
  CAS-BOT-BC33220  Delphinium armeniacum Amos Arthur Heller 1938-6-4 15149 Lassen 1 mile E of Fredonyer Pass. 1706 Comment
  NY353303  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass 1706.9 Comment
  RSA0005299  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  CHSC11768  Delphinium nudicaule Wayne O. Baum 1971-6-22 71 -2 Lassen West side of Rd. 5 approx. 1/4 mi. S. of five corners. 1767 Comment
  UC726275  Delphinium nudicaule A. A. Heller 1940-5-22 15663 Lassen hill back of Westwood Cemetery (station several mi w of type station) Comment
  CAS-BOT-BC9943  Delphinium nudicaule H. D. Ripley; R. C. Barneby 1943-6-14 5128 Lassen Fredonyer Pass 1706 Comment
  CHSC8562  Delphinium nuttallianum K. Stern 1967-7-1 Lassen Vic. Silver Lake. Comment
  HSC27049  Delphinium nuttallianum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19195 Lassen Harvey Valley near Cone Springs Comment
  UC499813  Delphinium nuttallianum Elmer I. Applegate 1929-6-21 5780 Lassen between Drakesbad and Kelley's Camp; Warner Valley Comment
  UC773881  Delphinium nuttallianum L. R. Short 1936-5-12 S- 347 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1834 Comment
  CAS-BOT-BC116046  Delphinium nuttallianum F. W. Pierson 1926-6-22 6820 Lassen Trail to Devil's Kitchen, Drakesbad, Lassen National Park. Comment
  CAS-BOT-BC116053  Delphinium nuttallianum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen West slope, Fredonyer Pass, 13.5 miles west of Susanville 1554 Comment
  NY492431  Delphinium stachydeum G. Schoolcraft 1983-8-3 1123 Lassen About 2 miles south of Holbrook Canyon 1828.8 Comment
  UCD61119  Deschampsia cespitosa A. L. Hormay 1941-6-23 13 Lassen Lassen National Forest. Burgess Spring. 1676 Comment
  CAS-BOT-BC194256  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-7 12463 Lassen Near Feather Lake Comment
  CAS-BOT-BC194259  Deschampsia cespitosa subsp. cespitosa Ray Hanson 1954-8-23 s.n. Lassen Near Jackey Lake 2112 Comment
  CDA31657  Deschampsia cespitosa subsp. cespitosa Gordon Leppig, T. LaBanca 1997-6-28 511 Lassen Modoc National Forest, Blue Lake Ranch, peatland in large meadow complex. Comment
  JEPS122164  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-8-20 19719 Lassen 0.8 mile west of Forest Road 32N22 (Westwood Logging Road), about 4.2 miles southeast (by road) from Bogard Rest Area on the south side of Highway 44. Comment
  UC1037258  Deschampsia cespitosa subsp. cespitosa Leo Whitney 1933-8-2 106 Lassen ca. 8 mi. n.w. Eagle lake (Slate Creek, Lassen Nat'l Forest); Lassen Nat'l Forest, Slate Creek 1920 Comment
  CAS-BOT-BC192741  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49499 Lassen Elysian Valley, west of Janesville 1325 Comment
  CAS-BOT-BC192743  Deschampsia danthonioides Lassen 1927 G. S. Crew 1927-7-15 52 Lassen Lassen National Forest 1737 Comment
  HSC69076  Deschampsia danthonioides Gary Schoolcraft 1980-7-16 313 Lassen Near Nelson Corral Reservoir. 1805 Comment
  RSA268159  Deschampsia danthonioides J. R. Reeder, C. G. Reeder 1972-6-1 5630 Lassen 2 miles S. of Nubieber. 1037 Comment
  CAS-BOT-BC201812  Deschampsia elongata Clare B. Hardham 1971-8-22 18375 Lassen Diamond Mountain 2346 Comment
  SEINET10480673  Descurainia Mary Susan Taylor 1982-5-29 Taylor 4564 Lassen T22N R17E se sec 23. Loyalton quad. NW corner of the jct of Scott Rd and Hwy 395, ca. 20 mi n of Reno; in Sagebrush Scrub. 4900 ft. 1493 Comment
  CHSC7706  Descurainia incana Beverley J. Wise 1969-4-29 38 Lassen 3.4 mi. north of Susanville on Rnd Valley Rd off Hwy 139. 1371 Comment
  UCD114633  Descurainia longipedicellata Grady L. Webster 1989-5-13 7709 Lassen 2.5 miles east of Beckworth Pass. 1493 Comment
  CAS-BOT-BC43089  Descurainia nelsonii John Thomas Howell 1934-7-7 12476 Lassen Harvey Valley. Comment
  CHSC99147  Descurainia nelsonii Lowell Ahart; John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  JEPS114360  Descurainia nelsonii Lowell Ahart, John Dittes 2008-6-19 14891 Lassen Bottom and sides of a small drainage, west bank of Willow Creek, about 5 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CAS-BOT-BC43165  Descurainia pinnata subsp. brachycarpa A. Simontacchi 1940-6-4 808 Lassen 14.8 miles west of Harvey Mountain Lookout. 1813 Comment
  CHSC57356  Descurainia sophia B. G. Clark 1987-4-15 22 Lassen Lassen or Inyo counties. Top of knoll 1/4 mi sw of Lassen College adjacent and west of hwy 139. Comment
  CHSC64773  Descurainia sophia Vernon H. Oswald 1995-6-7 6840 Lassen Modoc Plateau. Ridge on the n side of Wendel Rd. (Lassen 320) at milepost 11.0, 5.6 mi e of Wendel, ne of Susanville. Near the road. 1231 Comment
  JEPS114350  Descurainia sophia Lowell Ahart, John Dittes 2008-6-20 14912 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CHSC56816  Dichelostemma multiflorum Jerry Snodgrass 1978-7-8 42 Lassen Willard Creek, 2 mi S of Hwy 36 near Forest Service campsite. 1499 Comment
  CAS-BOT-BC500984  Dichelostemma multiflorum Ella Dales Cantelow 1940-5-31 3920 Lassen Hy. 299 E. of Mc Arthur Comment
  HSC63945  Dieteria canescens var. canescens Teresa Prendusi 1980-7-1 Lassen Little Antelope Valley 1677 Comment
  CHSC64867  Dieteria canescens var. shastensis Vernon H. Oswald 1995-6-26 6937 Lassen Modoc Plateau. Gravel pit on the e side of Ash Valley Rd. (Lassen 527) 0.2 mi n of Spooner Rd. in Ash Valley. 1542 Comment
  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
  UC86846  Dieteria canescens var. shastensis T. S. Brandegee Lassen Comment
  CAS-BOT-BC153679  Diplacus mephiticus H. D. Ripley; R. C. Barneby 1943-6-13 5698 Lassen South of Milford 1569 Comment
  CAS-BOT-BC153682  Diplacus mephiticus Margaret Williams; Steven Williams 1974-7-26 74 - L - 35 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC151434  Diplacus nanus Louella Bass 1977-6-12 77 -1&2 Lassen Elysian Valley 1325 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
  SBBG15309  Diplacus torreyi H. and M. Dearing 1938-7-1 2245 Lassen 17 mi W of Susanville Comment
  CHSC91302  Distichlis spicata Lowell Ahart; John Dittes 2005-6-2 11922 Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC60743  Distichlis spicata J. Burtt Davy June 17-24 1897 Lassen Amedee, Honey Lake Valley Comment
  UCD64607  Distichlis spicata var. stricta Malcolm A. Nobs; S. Galen Smith 1949-7-22 1069 Lassen NE shore of Eagle Lake. Comment
  CAS-BOT-BC136176  Dodecatheon alpinum Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake 1524 Comment
  CAS-BOT-BC136179  Dodecatheon alpinum Wayne Roderick 1969-6-14 s.n. Lassen Creek above Blue Lake 1524 Comment
  CHSC36450  Dodecatheon alpinum Susan H. Euing 1982-6-4 4 Lassen Murrers Upper Meadow. Comment
  HSC95203  Dodecatheon alpinum Gordon Leppig, Tony LaBanca, Leonel Arguello 1997-6-28 507 Lassen Modoc National Forest, Blue Lake Ranch 1970 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
  UC1776683  Dodecatheon conjugens G. Schoolcraft 1999-5-5 2814 Lassen Along Tuledad Road about 2 mile NE of Dodge Reservoir 1859 Comment
  CHSC106077  Downingia bacigalupii Lowell Ahart; John Dittes 2010-7-31 17013 Lassen Bottom of small wash, about 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  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
  JEPS96026  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1996-6-24 7845 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows located ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow just s. of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  RSA768782  Downingia bacigalupii L. Ahart, John Dittes 2010-7-31 17013 Lassen About 2300 feet north 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. 1511 Comment
  UC1483852  Downingia bacigalupii G. Schoolcraft 1980-7-15 313 Lassen n end Nelson Corral Reservoir 1804 Comment
  JEPS108448  Downingia bacigalupii Lisa Schultheis 1995-6-27 225 -95 Lassen Champ's Flat. N side of 33N16, 0.3mi from 33N06. Comment
  JEPS124625 Image available Downingia bacigalupii Laurel Loeblich 1964-7-1 65 Lassen Collected 17.6 mi. North of Susanville on Highway 1 in ditch on west side of road about 2 meters from road. Comment
  POM68157  Downingia bacigalupii Marcus E. Jones 1897-6-22 s.n. Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  SBBG126109  Downingia bacigalupii L. Ahart, J. Dittes 2010-7-31 17013 Lassen ca 2300 feet N of where rd crosses Hunsinger Draw, 1.9 mi NW of Moll Reservoir, 2.8 mi W of Ash Valley, 8.4 mi SE of Adin 1510 Comment
  CHSC27657  Downingia bicornuta N. E. Heiken 1978-7-27 92 Lassen N of Antelope Valley, w of Eagle Lake, pond in pasture. 1677 Comment
  CHSC59527  Downingia bicornuta Mary Meyer 1980-7-9 506 Lassen Horse Camp Springs, down-stream in cow pod. 1706 Comment
  SBBG69660  Downingia bicornuta S. W. Hutchinson -Jun-1925 492 Lassen near Eagle Lake 1554 Comment
  UCD149940  Downingia bicornuta William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  CHSC54182  Downingia cuspidata Vernon H. Oswald 1991-5-28 4623 Lassen Wayman Barn at the west end of Hunt Rd, Ash Creek Wildlife Area, ca. 5 miles northeast of Bieber. 1264 Comment
  UC1520663  Downingia insignis Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9482 Lassen 4.6 mi s Ravendale (U.S. Highway 395) 1615 Comment
  UC1924242  Downingia insignis Debra Valov 2004-6-8 2004242 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  HSC63957  Downingia insignis Teresa Prendusi 1980-7-1 1124 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  RSA574802  Downingia insignis R. R. Halse 1975-6-20 1200 Lassen Along county road 502, 2.3 miles N of Ravendale. 1614 Comment
  SEINET10702760  Downingia insignis David B. Dunn 1956-7-3 Dunn 11924 Lassen Alkaline sink by roadside, extra runoff from Hwy. 395. 11 mi. S of Madeline. Comment
  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
  SEINET5342791  Draba verna J. Young 1978-4-13 s.n. Lassen Meyers Ranch, Adin, CA. Comment
  HSC68048  Drosera anglica J. P. Smith, J. O. Sawyer 1973-8-9 7281 Lassen Blue Lake, Modoc National Forest. 1829 Comment
  UC1609244  Drymocallis lactea var. lactea Vernon H. Oswald and Lowell Ahart 1993-6-28 5613 Lassen ne Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvey Mtn); Harvey Mtn., ne of Poison Lake, nne of Burgess Meadow 1798 Comment
  CHSC99982  Elaeagnus angustifolia L. P. Janeway 2008-8-2 9522 Lassen Modoc Plateau. Honey Lake Valley, 4.9 air km southeast of Standish, along Mapes Road 0.3 km east of Lambert Lane. 1222 Comment
  RSA0011453  Eleocharis Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46985 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CAS-BOT-BC113620  Eleocharis acicularis R. K. Gierisch; D. H. Esplin 1969-8-26 3596 Lassen Harvey Valley 1676 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
  CHSC77256  Eleocharis macrostachya G. Schoolcraft 1995-6-27 2499 Lassen Cherry Creek. 1524 Comment
  CAS-BOT-BC112846  Eleocharis macrostachya John Thomas Howell 1973-7-10 49805 Lassen Near Susanville on road to Janesville. 1295 Comment
  HSC95334  Eleocharis suksdorfiana Gordon Leppig, Tony LaBanca, L. Arguello 1997-6-28 515 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  POM112303  Elymus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CAS-BOT-BC221829  Elymus canadensis Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  CHSC112467  Elymus caput-medusae Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18749 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
  CAS-BOT-BC227492  Elymus elymoides Louella Bass 1973-6-3 EU 97 Lassen Elysian Valley 1325 Comment
  JEPS128418  Elymus elymoides Jennifer Mueller 2017-7-18 CA 320 -193 Lassen Near Long Springs on Cold Springs Mountain. Comment
  UCD61535  Elymus elymoides L. D. Whitney 1935-6-25 Lassen Ashurst Mt. Comment
  CHSC5256  Elymus elymoides subsp. elymoides P. Balch 1955-7-23 Lassen Stafford's Eagle Lake Resort. 1569 Comment
  CHSC6320  Elymus elymoides subsp. elymoides Nick Santamaria 1968-6-29 16 Lassen On the ELBS grounds. Comment
  UC1024958  Elymus elymoides subsp. elymoides Leo Whitney 1935-6-24 3304 Lassen ca 13 mi w north end of Eagle Lake; Squaw Valley Comment
  UC1133007  Elymus elymoides subsp. elymoides H. P. Hagge 1929-9-11 23 Lassen Logan Mtn. Lassen National Forest, Eagle Lake Quadrangle Comment
  UC53733  Elymus elymoides subsp. elymoides J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  UC773975  Elymus elymoides subsp. elymoides L. R. Short and Wm. Gansberg 1936-7-9 S- 477 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1783 Comment
  JEPS126480  Elymus elymoides var. californicus Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-15 CA 350 -044 Lassen Throughout reservoir along right side of Horse Road when traveling North. Comment
  JEPS126496  Elymus elymoides var. californicus Alia Johnson, Jocelyn Munoz, Jillian Sarazen 2016-7-12 CA 350 -74 Lassen Heading north on 395 turn right on to Smoke Creek Road and drive up the road towards the uphill to where the Rush fire burned. Comment
  CHSC29902  Elymus glaucus Robin L. Ondricek 1978-7-22 107 Lassen 1.2 mi e of paved road to the marina on Black Mt. road. 1584 Comment
  UCD62565  Elymus repens J. V. Langdon 1957-7-1 Lassen Susanville. Comment
  JEPS119960  Elymus trachycaulus Lowell Ahart, John Dittes 2012-7-9 18297 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UCD62664  Elymus trachycaulus L. Whitney 1935-6-24 Lassen Squaw Valley. Comment
  UCD62709  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Along Hwy. 36, 4.5 miles west of Susanville. Comment
  CAS-BOT-BC204360  Elymus trachycaulus subsp. trachycaulus J. Burtt Davy 1897-6-17 s.n. Lassen Honey Lake Valley Comment
  UC1924266  Elytrigia pontica subsp. pontica Debra Valov 2005-8-20 2005230 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1279 Comment
  CHSC32865  Ephedra viridis J. S. White 1980-4-14 124 Lassen 3 mi ne of Wendel. 1371 Comment
  CHSC60268  Ephedra viridis P. V. Caldwell 1972-6-30 299 Lassen 22 mi from Hwy 139, 7 mi w of Ravensdale (turnoff 15 mi from Susanville). Comment
  HSC1308  Ephedra viridis K. P. St. John 1965-5-6 17 Lassen 13 mi. N of Litchfield on Hwy. 395 Comment
  SEINET10532255  Ephedra viridis Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 893 Lassen Collected 3 mi N of Milford, Callif., on Hwy 395 at Honey Lake campgrounds. Comment
  SEINET11739305  Ephedra viridis M. Sacks, Detzer 1977-1 13 Lassen 4 km S of Hwy 395 1386 Comment
  CHSC89728  Epilobium brachycarpum L. P. Janeway 2004-6-26 8146 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
  HSC68917  Epilobium brachycarpum Gary Schoolcraft 1980-7-7 302 Lassen N end of Eagle Lake 1585 Comment
  RSA252401  Epilobium brachycarpum Robert F. Thorne, C. W. Tilforth 1969-9-6 39263 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  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
  UC1523739  Epilobium campestre Gary Schoolcraft 1981-9-1 571 Lassen se of Bieber (along road) 1255 Comment
  UC1924202  Epilobium densiflorum Debra Valov 2005-8-20 2005223 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  SJSU10675  Epilobium oregonense J. W. Tilden 1960-6-27 1517 Lassen 5 mi E of Westwood on Moonlight Rd 1524 Comment
  SEINET3271522 Image available Epilobium oregonense Marcus E. Jones 1897-6-30 Lassen 4 mi. below Eagle Lake 1524 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
  CAS-BOT-BC56947  Equisetum arvense John Thomas Howell 1974-7-8 50476 Lassen Susanville 1295 Comment
  CAS-BOT-BC57307  Equisetum laevigatum John Thomas Howell 1974-7-8 50473 Lassen Susanville 1295 Comment
  CAS-BOT-BC57236  Equisetum laevigatum Alice Eastwood; John Thomas Howell 1940-6-11 7996 Lassen Bieber Comment
  CAS-BOT-BC174094  Eremogone aculeata John Thomas Howell 1934-6-14 12160 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CHSC67078  Eremogone congesta var. subcongesta Jeanne Boze 1981-6-11 104 Lassen Along roadside, ca. 6 mi. from Hwy. 139 on Horse Lake Rd. 1737 Comment
  CHSC68745  Eremogone congesta var. subcongesta Vernon H. Oswald; Lowell Ahart 1997-5-27 8485 Lassen East side of Hwy. 139 at a small farm pond 38.2 mi north of Susanville, 7.4 mi north of Eagle Lake Rd. 1627 Comment
  CHSC87117  Eremogone congesta var. subcongesta L. P. Janeway 2001-6-20 7199 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
  SEINET8821547  Eremogone congesta var. subcongesta G. Schoolcraft 1998-6-30 2746 Lassen N end of Fort Sage Mountains. 1859 Comment
  CAS-BOT-BC159991  Eremothera boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel 1231 Comment
  CAS-BOT-BC159993  Eremothera boothii subsp. alyssoides A. A. Heller 1938-6-23 15212 Lassen North of Balls Canyon on U. S. Highway #395 Comment
  CAS-BOT-BC159998  Eremothera boothii subsp. alyssoides Philip A. Munz 1947-5-19 11869 Lassen 19 miles south of Ravendale, on Highway 395 1341 Comment
  CAS-BOT-BC160009  Eremothera boothii subsp. boothii Louella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  CHSC64796  Eremothera minor Vernon H. Oswald 1995-5-24 6766 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 5.0 mi e of Amedee Rd. at Wendel. On flat bordering the road. 1219 Comment
  SEINET3995252  Eremothera minor A. Tiehm 1980-1 5752 Lassen North end of Honey Lake Valley, 2 air miles northwest of Wendel 1231 Comment
  CHSC34596  Eriastrum signatum Robert A. Schlising 1978-7-1 3298 Lassen E of Eagle Lake, NE of Eagle L. Field Station. On lava flow from Black Mt. 1584 Comment
  UC1123886  Eriastrum signatum E. Sawyer 1935-6-29 222 Lassen Long Valley Sierraville Quadrangle 1310 Comment
  RSA0125158  Eriastrum signatum Marcus E. Jones 1897-6-22 9972 Lassen 10 miles south of Amedee. [Lassen or Plumas Co.] 1220 Comment
  NY1012886  Eriastrum sparsiflorum W. W. Eggleston 1911-7-8 7191 Lassen Vicinity of Doyle Station 1290 Comment
  SEINET7356288  Eriastrum sparsiflorum Richard R. Halse 2004-7-21 6669 Lassen At junction of U.S. Hwy 395 and State Road A 26, ca 11 miles southeast of Milford.; 0 1274 Comment
  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
  CAS-BOT-BC286607  Ericameria bloomeri Gary Schoolcraft 1984-8-21 1367 Lassen Eastern slopes of Fredonyer Mtn. 33-12-35 2072 Comment
  UC1136848  Ericameria bloomeri George A. Fischer and Irwin H. Johnson 1933-8-26 F- 280 Lassen n border Grass Valley; Lassen Forest, Grass Valley 1676 Comment
  CHSC76085  Ericameria nauseosa var. oreophila Lowell Ahart; Vernon H. Oswald 1999-9-13 8220 Lassen Along road, about 100 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  UC1553387  Ericameria nauseosa var. oreophila G. Schoolcraft 1988-8-24 1853 Lassen 16 mi e of Adin (Ash Valley RNA/ACEC); Ash Valley 1554 Comment
  UCD54535  Ericameria nauseosa var. oreophila Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2720 Lassen E. of town of Susanville, along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. Sewage treatment plant area. 1247 Comment
  CAS-BOT-BC299485  Ericameria nauseosa var. washoensis Gary Schoolcraft 1979-8-23 181 Lassen Just off Post Camp Road along road to Big Spring 1676 Comment
  CHSC78479  Ericameria suffruticosa Vernon H. Oswald 2000-7-31 9946 Lassen Spur road leading from Forest Road 28N15 to the small pond on the crest of Diamond Mountain. 2215 Comment
  RSA517336  Erigeron aphanactis Barbara Ertter, Gary Schoolcraft 1987-6-16 7176 Lassen Skeeadaddle Mtns on the NE side of Honey Lake. E side of road over saddle on W side of range. 1646 Comment
  UC87724  Erigeron aphanactis var. aphanactis unknown 1892-6-22 Lassen Honey Lake Comment
  RSA700050  Erigeron bloomeri L. P. Janeway 2001-6-20 7198 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
  CDA4405  Erigeron bloomeri T. C. Fuller 1963-6-1 10632 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CHSC64864  Erigeron bloomeri var. bloomeri Vernon H. Oswald 1995-6-26 6917 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC68843  Erigeron bloomeri var. bloomeri Vernon Oswald; Lowell Ahart 1997-6-24 8631 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  HSC82194  Erigeron bloomeri var. bloomeri Thomas W. Nelson, Jane P. Nelson 1980-7-6 6048 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS80680  Erigeron bloomeri var. bloomeri L. R. Heckard and T. I. Chuang 1981-6-10 5532 Lassen North Eagle Lake Campground Eagle Lake (nw corner of lake) 1524 Comment
  UC1136834  Erigeron bloomeri var. bloomeri George A. Fischer and Irwin H. Johnson 1933-7-12 F 217 Lassen Lassen National Forest 1722 Comment
  UC1536740  Erigeron bloomeri var. bloomeri G. H. True Jr. 1936-6-27 559 Lassen near top Hot Spring Mt. 1828 Comment
  CHSC23483  Erigeron cervinus Wayne O. Baum 1971-7-12 71 -58 Lassen Slope of Gallatin Peak. 2042 Comment
  CAS-BOT-BC294905  Erigeron chrysopsidis var. austiniae G. Schoolcraft 1988-6-7 1811 Lassen About 14 air mi. NE of Ravendale 1737 Comment
  CAS-BOT-BC297189  Erigeron coulteri G. Schoolcraft 1994-7-6 2358 Lassen About 1 mile west of Boot Lake 2042 Comment
  CAS-BOT-BC295980  Erigeron divergens Clare B. Hardham 1961-6-17 7504 Lassen Baxter Creek south of Susanville 1524 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
  UC55075  Erigeron divergens Milo S. Baker 1898-7-12 306 Lassen The Bench Comment
  UC87555  Erigeron divergens T. S. Brandegee 1892-6-28 Lassen Janesville Comment
  CAS-BOT-BC300374  Erigeron eatonii var. plantagineus Alice Eastwood; John Thomas Howell 1940-6-11 7980 Lassen Big Valley Mts. Comment
  HSC81782  Erigeron eatonii var. plantagineus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6017 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir 1585 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
  UC1776680  Erigeron eatonii var. plantagineus G. Schoolcraft 1993-6-29 2313 Lassen Ash Valley RNA 16 miles E of Adin 1554 Comment
  UC773845  Erigeron eatonii var. plantagineus L. R. Short 1936-5-22 S- 350 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  CHSC67164  Erigeron eatonii var. sonnei James D. Jokerst 1991-5-29 3301 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CAS-BOT-BC300426  Erigeron elegantulus Mrs. C. C. Bruce 1898-6-1 2182 Lassen Madeline Plains Comment
  CHSC101040  Erigeron elegantulus John Dittes 2008-5-22 1523 Lassen Modoc Plateau; ca. 15.3 air miles southeast of Adin, ca. 3.4 air miles east of Hayden Hill, ca 300 feet north by northeast of intersection of Hwy 139 and FS Road 36N02; open, rocky volcanic toe-slope on northeast side of Willow Creek. 482 Comment
  CHSC99138  Erigeron elegantulus Lowell Ahart; John Dittes 2008-6-19 14866 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1583975  Erigeron filifolius G. Schoolcraft 1990-7-2 2102 Lassen w Cold Spring Mtn. 1645 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
  CHSC60817  Erigeron lassenianus var. lassenianus Vernon H. Oswald; Lowell Ahart 1993-6-28 5578 Lassen Harvey Valley Rd. (33N02), 0.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1749 Comment
  JEPS41565  Erigeron linearis F. W. Peirson 1926-6-24 6855 Lassen Madeline Plain Comment
  RSA713117  Erigeron linearis L. P. Janeway, B. Castro 2005-7-10 8485 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
  CHSC12615  Erigeron philadelphicus Jannae Pitts 1972-6-23 265 Lassen On the road to Eagle Lake Field Station, 2 mi se of the station on the e side of the road. Comment
  RSA700053  Erigeron pumilus subsp. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km NNW of Harvey Mountain. 1640 Comment
  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
  JEPS94532  Erigeron pumilus var. intermedius Vernon Oswald and Lowell Ahart 1997-6-24 8648 Lassen s of Susanville (at the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC76008  Erigeron pumilus var. intermedius Milo S. Baker 1890-1 Lassen Honey Lake Valley, near Milford; Honey lake Valley Comment
  UCD150396  Erigeron pumilus var. intermedius William Anderson 1963-6-3 s.n. Lassen Hartson Reservoir. Comment
  CAS-BOT-BC241565  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-5 4672 Lassen Between Shaffer Mt. and Warren Peak Comment
  NY243326  Eriogonum baileyi var. baileyi R. F. Hoover 1940-10-1 4649 Lassen Johnstonville. Comment
  SEINET5328378  Eriogonum baileyi var. baileyi M. J. Williams 1974-7-26 74 -L-25 Lassen 2 mi. west of Hallelujah Junction, south of Hwy. 70. 1494 Comment
  UCR92116  Eriogonum baileyi var. baileyi G. R. Ballmer 1993-7-31 s.n. Lassen Sandy flats along Fort Sage Rd., NE of Doyle, SE of Honey Lake, about 2-5 air mi west of Neveda border 1215 Comment
  NY399607  Eriogonum baileyi var. baileyi E. K. Balls 1952-10-10 18139 Lassen 5.5 miles northeast of Litchfield, Highway 395, between Susanville and Alturas 1280.2 Comment
  JEPS25524  Eriogonum collinum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7136 Lassen sandy playa 1/4 mi beside US 395 road to Smoke Creek 1341 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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  NY242508  Eriogonum collinum H. D. D. Ripley 1943-6-15 5758 Lassen Near Viewland. 1310.6 Comment
  SEINET6332092  Eriogonum collinum A. J. Cronquist, A. H. Holmgren 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615 Comment
  CAS-BOT-BC246502  Eriogonum douglasii var. meridionale Doris Kildale Gillespie 1930-5-13 9361 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC246511  Eriogonum elatum var. elatum Margaret Williams 1974-7-27 74 -L-45 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SEINET251879  Eriogonum elatum var. villosum Leila M. Shultz, John S. Shultz 1985-6-23 8608 Lassen Long Valley Creek drainage, 5 miles north of Doyle. 1305 Comment
  UC1305802  Eriogonum maculatum Noel H. Holmgren, James L. Reveal 1964-8-22 1724 Lassen 18 mi s along U.S. 395 Ravendale (35 mi ne of Susanville) Comment
  UC1533147  Eriogonum maculatum G. Schoolcraft 1986-9-9 1670 Lassen 0.1 mi w along Smoke Creek Road CA-NV stateline 1341 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
  CAS-BOT-BC267345  Eriogonum marifolium var. marifolium John Thomas Howell 1934-7-9 12521 Lassen Pine Creek Flat Comment
  NY803459  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-9-8 2947 Lassen About 1 mile south of Constantia, CA west of Highway 395 1421 Comment
  CAS-BOT-BC268790  Eriogonum nidularium Robert F. Hoover 1940-9-29 4643 Lassen Pass between Shaffer Mountain and Warren Peak Comment
  UCD13226  Eriogonum nudum Janet Browder 1973-6-3 98 Lassen Lassen CO. Eagle Lake recreation Area, County Road 201, 1 mile north of airport. Elevation 5100 feet. 1554 Comment
  SJSU9529  Eriogonum nudum var. deductum J. W. Tilden 1960-6-27 1492 Lassen Westwood 1524 Comment
  CHSC105258  Eriogonum nudum var. nudum Lowell Ahart; John Dittes 2010-7-31 16983 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
  UC412801  Eriogonum nudum var. pubiflorum Franklin P. Nutting Lassen Big Valley Comment
  CAS-BOT-BC266814  Eriogonum nummulare Arnold Tiehm 1978-10-14 4767 Lassen 7.2 road miles NE of Doyle on road 327 to Flanigan about 1.7 miles W of the Nevada line 1524 Comment
  UCD100769  Eriogonum ovalifolium Beecher Crampton 1964-6-26 7087 Lassen 35 miles NW of Susanville, State Hwy. 44, Gray's Valley, 3 miles north Bogard Ranger Station. Comment
  CHSC64886  Eriogonum ovalifolium var. ovalifolium Vernon H. Oswald; Lowell Ahart 1995-6-19 6889 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395. On a slope on the s side of the road at Mud Flat. 1350 Comment
  UC1032333  Eriogonum ovalifolium var. ovalifolium A. Simontacchi 1940-6-30 932 Lassen 4.2 mi s Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  SEINET516318  Eriogonum ovalifolium var. purpureum Vernon H. Oswald 1998-9-14 9627 Lassen Windy Hollow on the W side of Hwy. 44 ca. 1 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  UC6570  Eriogonum prociduum Mrs. R. M. Austin June, 1894 Lassen Willow Creek Valley Comment
  CAS-BOT-BC272624  Eriogonum spergulinum var. reddingianum John Thomas Howell 1974-7-9 50490 Lassen NW. of Wildcat Point, Eagle Lake Comment
  CHSC25314  Eriogonum sphaerocephalum var. halimioides Pauleen Broyles 1977-6-1 165 Lassen Spencer Basin, 8 km n of Herlong. 1770 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
  UC1032330  Eriogonum sphaerocephalum var. halimioides A. Simontacchi 1940-7-8 923 Lassen 5.1 mi s Jelly Camp; Lassen National Forest, Halls Flat Quadrangle Comment
  UCR55662  Eriogonum sphaerocephalum var. halimioides G. R. Ballmer 1988-7-19 s.n. Lassen Warner Mtns, vicinity of Blue Lake 1982 Comment
  CAS-BOT-BC262734  Eriogonum sphaerocephalum var. sphaerocephalum Louella Bass 1983-6-10 2 -83 Lassen Lassen College Campus, Susanville Comment
  CHSC1330  Eriogonum sphaerocephalum var. sphaerocephalum V. Holt 1946-6-17 Lassen Mt. Fredonyer. 2377 Comment
  CHSC64885  Eriogonum sphaerocephalum var. sphaerocephalum Vernon H. Oswald; Lowell Ahart 1995-6-19 6875 Lassen Between Litchfield and Revendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  UC726566  Eriogonum sphaerocephalum var. sphaerocephalum A. A. Heller 1938-6-23 15214 Lassen s Secret Valley (on U. S. Highway #395) 1371 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
  JEPS114744  Eriogonum strictum var. anserinum Lowell Ahart, John Dittes 2008-6-19 14893 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber 1578 Comment
  CAS-BOT-BC262770  Eriogonum strictum var. proliferum Doris Kildale Gillespie 1930-5-13 9365 Lassen Between Susanville and Janesville Comment
  UC85812  Eriogonum strictum var. proliferum Brandegee June 1892 Lassen Susanville Comment
  CAS-BOT-BC267897  Eriogonum umbellatum John Thomas Howell 1973-7-10 49772 Lassen Near Westwood, Sierra Nevada 1554 Comment
  SEINET10479554  Eriogonum umbellatum Mary Susan Taylor 1974-1 Taylor 256 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CAS-BOT-BC267815  Eriogonum umbellatum var. covillei G. Schoolcraft 1997-8-6 2671 Lassen Diamond Mtn. 2316 Comment
  CHSC86946  Eriogonum umbellatum var. modocense L. P. Janeway 2001-6-20 7189 Lassen High Cascade Range. South side of the junction of the '22' road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  RSA702592  Eriogonum umbellatum var. modocense L. P. Janeway 2004-6-26 8157 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  UC849718  Eriogonum umbellatum var. modocense A. A. Heller 1938-7-23 15190 Lassen 3 mi e Westwood Comment
  RSA152682  Eriogonum umbellatum var. modocense I. L. Wiggins, Dorothy B. Wiggins 1961-6-11 16361 Lassen On ridge among volcanic boulders near NE end of Eagle Lake. Comment
  CHSC14170  Eriogonum umbellatum var. nevadense K. R. Stern 1974-6-26 5867 Lassen E end of Champs Flat. Comment
  NY399398  Eriogonum umbellatum var. nevadense H. D. D. Ripley 1943-6-13 5713 Lassen South of Johnstonville 1325.9 Comment
  RSA65960  Eriogonum umbellatum var. nevadense F. W. Peirson 1926-6-24 6848 Lassen On Madeline Plain. Comment
  UC1032270  Eriogonum umbellatum var. nevadense H. P. Hagge 1929-9-11 22 Lassen Logan Mtn. Eagle Lake Quadrangle, Logan Mtn. Comment
  UC1137291  Eriogonum umbellatum var. nevadense K. E. Bradshaw 1939-5-27 237 Lassen Black Mt. Experimental Forest Plot 39-1 Lassen National Forest, Halls Flat Quadrangle 1752 Comment
  POM105077  Eriogonum umbellatum var. polyanthum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  POM253241  Eriogonum umbellatum var. polyanthum A. A. Heller 1938-6-23 15190 Lassen 3 mi. east of Westwood. Comment
  SEINET530706  Eriogonum umbellatum var. polyanthum Paul Opler 2008-7-7 Lassen Crater Lake Rd., 32N08. 1725 Comment
  JEPS56205  Eriogonum ursinum Hilda W. Grinnell 1934-6-2 Lassen Fredonyer Pass 1753 Comment
  CHSC4943  Eriogonum vimineum W. Lessig 1967-7-11 26 Lassen 3 mi se of Eagle Lake Biology Station on rd to Murrer's Meadow. 1524 Comment
  JEPS19807  Eriogonum vimineum Rimo Bacigalupi with S. Galen Smith 1957-6-28 6011 Lassen ne, along U.S. Hghway 395 Karlo (near headwaters of Secret Creek, n of Secret Valley and w of Rye Patch Canyon); Secret Creek 1615 Comment
  POM195124  Eriogonum vimineum D. D. Keck 1930-7-23 951 Lassen Susanville. 1280 Comment
  RSA780043  Eriogonum vimineum Elizabeth A. Kempton 2007-8-15 511 Lassen Janesville, intersection of 395 and Sunnyside road 973 Comment
  UC412830  Eriogonum vimineum Lewis S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  CDA22697  Eriogonum vimineum T. C. Fuller 1963-7-15 10894 Lassen Road to Pittville, 4.3 miles northwest of Little Valley. 0 Comment
  CHSC66273  Eriophorum gracile Vernon H. Oswald; Lowell Ahart 1996-6-24 7888 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC5210  Eriophyllum lanatum W. Vinyard 1946-6-10 Lassen Pelican Point, Eagle Lake. 1556 Comment
  UC1118375  Eriophyllum lanatum var. achilleoides A. Simontacchi 1940-6-23 887 Lassen 3.2 mi sw of Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle 1920 Comment
  UC1142994  Eriophyllum lanatum var. achilleoides August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest, Harvey Mtn. 2133 Comment
  UCR244036  Eriophyllum lanatum var. achilleoides Jim Andre 1993-6-5 19706 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, c. 3 mi. SE of Susanville, just south of airport 1256 Comment
  CAS-BOT-BC308139  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-29 64 -85 Lassen Blacks Mt. Experivmental Forest 1798 Comment
  CHSC60819  Eriophyllum lanatum var. integrifolium Vernon H. Oswald; Lowell Ahart 1993-6-28 5583 Lassen Harvey Valley Rd. (33N02), 1.2 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake. 1731 Comment
  JEPS29200  Eriophyllum lanatum var. integrifolium Lauramay T. Dempster 1961-6-17 1677 Lassen about 8 mi n of Karlo Road junction with Hwy. 395 1584 Comment
  JEPS34480  Eriophyllum lanatum var. integrifolium C. S. Robinson 1927-7-1 50 Lassen Bogard Ranger Station Lassen National Forest (sw Lassen County) 1712 Comment
  UC1137628  Eriophyllum lanatum var. integrifolium A. Simontacchi 1940-6-5 816 Lassen 8.3 mi wnw of Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1536862  Eriophyllum lanatum var. integrifolium G. H. True Jr. 1936-6-25 537 Lassen e Harvey Ranger Station; Harvey Valley 1767 Comment
  CHSC116092  Erodium cicutarium Lowell Ahart; John Dittes 2015-7-13 20320 Lassen About 100 yards southwest of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  POM83000  Eryngium alismifolium Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UC1594637  Eryngium alismifolium Vernon H. Oswald and Lowell Ahart 1992-7-16 5104 b Lassen Long Lake on s. side of Hwy. 44 between Old Station and Susanville (1.2 mi. s.e. of County Rd. A21); Long Lake 1745 Comment
  JEPS66448  Eryngium alismifolium L. R. Heckard and P. Rubtzoff 1971-8-4 2709 Lassen ca. 10 mi. n. Terms (along U.S. Hwy. 395) Comment
  UC809839  Eryngium alismifolium G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-5 4000 Lassen n.w. Susanville (Hog Flat); Hog Flat 1676 Comment
  JEPS53558  Erysimum capitatum var. capitatum Frances D. Payne 1929-7-12 93 Lassen on ridge above Lost Lake; Warner Mts. 2286 Comment
  CAS-BOT-BC150214  Erythranthe Clare B. Hardham 1969-8-28 17453 G Lassen West of Janesville Comment
  CHSC60857  Erythranthe breweri Vernon H. Oswald; Lowell Ahart 1993-6-28 5610 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
  SEINET14291839  Erythranthe guttata D. W. Taylor 2005-6-29 19378 Lassen Piute Creek, 3 miles W from W edge of Susanville; 40.43106 -120.70866 1311 Comment
  CHSC68876  Erythranthe lewisii Vernon Oswald; Lowell Ahart 1997-6-24 8616 Lassen South of Susanville on the north side of Diamond Mtn. at a springy slope with streamlets along Forest Rd. 29N42, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. 1889 Comment
  SD7093  Erythranthe lewisii Austin 1880-1 Lassen Spanish Peak Comment
  POM252826A  Erythranthe pulsiferae A. A. Heller 1938-6-22 15187 Lassen 1 mile south of Westwood. 1524 Comment
  POM260456  Erythranthe pulsiferae C. L. Hitchcock 1940-5-26 6611 Lassen Lava beds ca 12 miles north of Fall River Mills (Shasta Co.) on Fall River. 1372 Comment
  CHSC7770  Eschscholzia californica Beverley J. Wise 1969-5-17 72 Lassen City limits of Susanville on Hwy 139. 1310 Comment
  CDA14324  Euphorbia crenulata B. Corbin 1998-7-23 s.n. Lassen Lassen National Forest; Hwy 36, immed. E of junction w/Hwy 147, on Lassen NF. 0 Comment
  UCD142769  Euphorbia serpillifolia R. N. Raynor 1938-7-16 s.n. Lassen Honey Lake Valley. Comment
  UCD142354  Euphorbia virgata Fay Roberts 1938-8-21 s.n. Lassen Bieber. Comment
  JEPS31883  Eurybia integrifolia Brown and Wieslander 1922-7-30 14 Lassen Martin Springs Eagle Lake Comment
  UC29863  Eurybia integrifolia Milo S. Baker 1894-7-30 Lassen Silver Lake Comment
  SEINET8687802 Image available Eurybia integrifolia G. Schoolcraft 1994-8-1 2391 Lassen About 2 miles NW of Boot Lake 2457 Comment
  CAS-BOT-BC278431  Festuca idahoensis John Thomas Howell 1934-7-6 12448 Lassen Harvey Valley Comment
  CDA42998  Festuca idahoensis L. Ahart, John Dittes 2008-6-19 14880 Lassen About 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. Comment
  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
  JEPS123453  Festuca idahoensis Wilson Collison, Jaileen Merced 2015-8-5 CA 320 -142 Lassen Trap Mountain, Wing allotment. Highway 139 W (north) from Termo Grasshopper Road. Comment
  POM112032  Festuca idahoensis Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  POM203057  Festuca idahoensis J. T. Howell 1934-7-6 12430 Lassen Hall's Flat. Comment
  UC1024694  Festuca idahoensis Leo Whitney 1933-7-10 2151 Lassen ca 25 mi w Eagle Lake (upper end); Lassen National Forest, Halls Flat 1737 Comment
  UC1026711  Festuca idahoensis Leo Whitney 1935-6-23 3295 Lassen Camp 10, Fruit Grower's Supply Company Comment
  UCD65975  Festuca idahoensis L. Whitney 1933-8-3 Lassen Halls Flat. Comment
  UCD66094  Festuca idahoensis C. R. Quick 1962-6-17 62- 30 Lassen Western Pacific RR, south of Halls Flat. 1706 Comment
  CHSC117218  Festuca microstachys var. microstachys Lowell Ahart; John Dittes 2016-6-7 21002 Lassen Near Stonebreaker Road, 0.7 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS95107  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1997-6-24 8650 Lassen s of Susanville just s of small ond on crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout Red Rock Lookout; crest of Diamond Mountain 2249 Comment
  RSA392153  Frasera albicaulis var. nitida Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC36488  Fritillaria atropurpurea Theresa Costa 1982-6-5 39 Lassen Along e slope Gallatin Mountain. Comment
  CAS-BOT-BC508129  Fritillaria recurva Mrs. A S. Baldwin 1928-5-10 318 Lassen Coyote Flat. Over ridge from Dixie Valley Comment
  RSA121072  Galium aparine L. R. Short, W. Gansberg 1936-6-2 S- 367 Lassen Lassen forest. MDM, Burgess Spr. Exp. Range. 1851 Comment
  CHSC7720  Galium asperrimum Beverley J. Wise 1969-5-18 96 Lassen 18.2 mi. East of Susanville on Co. Rd 216 off Lassen Co. Rd. 215. 1554 Comment
  UC1523737  Galium bolanderi Lisa Ganio 1981-6-17 24 Lassen Beaver Creek 1280 Comment
  SEINET11616108  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows 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
  JEPS107800  Galium boreale subsp. septentrionale Lowell Ahart, John Dittes 2005-6-2 11981 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  POM68457  Galium mexicanum subsp. asperulum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC59813  Galium multiflorum Mary Meyer; Teresa Prendusi 1980-5-8 Lassen In rocks on lower Balls Canyon wall. 1341 Comment
  UC1479581  Galium multiflorum G. Schoolcraft 1980-5-30 245 Lassen sw Herlong; Bird Canyon 1432 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
  RSA0105575  Galium trifidum subsp. columbianum Lowell Ahart, John Dittes 2013-7-23 18895 Lassen Along the south margin of the levee road, about 150 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC506925  Gayophytum diffusum subsp. parviflorum George A. Fischer and Irwin H. Johnson 1933-7-14 F 247 Lassen Lassen National Forest 1767 Comment
  UC1186544  Gayophytum diffusum subsp. parviflorum J. W. MacSwain 1959-8-12 59 -148 Lassen 2 mi n Bridge Camp; Hat Creek Comment
  JEPS27572  Gayophytum heterozygum Brown and Wieslander 1922-7-23 2 Lassen Martin Sprs. Eagle Lake Comment
  HSC63969  Gayophytum humile Teresa Prendusi 1980-7-1 1121 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  POM204159  Gayophytum ramosissimum J. T. Howell 1934-6-10 11843 Lassen Near Plumas Junction Comment
  RSA0004472  Gayophytum ramosissimum var. obtusum W. L. Jepson 1918-8-2 7755 Lassen Beckwith Pass 1463 Comment
  CHSC77216  Geranium richardsonii Schoolcraft 1999-6-25 2840 Lassen SW of Lost Lake on SE slopes of Warner Mtns. 2225 Comment
  UC1037229  Geranium viscosissimum Leo Whitney 2007 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  NY1101445  Geranium viscosissimum var. nervosum B. M. Bartholomew 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains. 2080 Comment
  RSA0029585  Geranium viscosissimum var. nervosum Bruce Bartholomew, B. Anderson 1988-6-25 4372 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  JEPS44857  Geum aleppicum W. L. Jepson 1918-8-4 7810 Lassen Horse Lake 1554 Comment
  UC72970  Geum macrophyllum Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  RSA454250  Geum macrophyllum Roch Well 1929-7-1 s.n. Lassen [Unspecified] Comment
  SEINET6702766  Geum macrophyllum var. perincisum G. Schoolcraft 1994-8-2 2393 Lassen About 2 miles northwest of Boot Lake 2438 Comment
  CHSC68762  Geum triflorum Vernon H. Oswald; Lowell Ahart 1997-5-27 8504 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.1 mi east of Hwy. 139. On the bank of a creek paralleling the road. 1546 Comment
  CHSC68869  Geum triflorum Vernon Oswald; Lowell Ahart 1997-6-24 8649 Lassen South of Susanville at the pond on the crest of Diamond Mtn., about midway between Aspen Flat and Red Rock Lookout. 2249 Comment
  UC1136907  Geum triflorum George A. Fischer, Irwin H. Johnson 1933-7-12 F 211 Lassen Lassen National Forest, Forest and Range Experiment Station Lassen National Forest; , Forest and Range Experiment Station 1722 Comment
  UC477497  Geum triflorum A. G. Brenneis 1928-7-3 14 Lassen Lassen National Forest, Jesson Valley Jesson Valley; Lassen National Forest, Jesson Valley 1463 Comment
  CHSC25117  Gilia capitata subsp. mediomontana D. L. Stites 1967-7-4 104 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  SEINET14644501  Gilia inconspicua F. L. H. 1915-5-28 s.n. Lassen Honey Lake. Comment
  JEPS17737  Gilia leptomeria Rimo Bacigalupi with G. T. Robbins 1955-7-21 5422 Lassen 17.5 mi e U.S. 395 (1.3 mi w of Nevada State line, s of Smoke Creek Ranch Road, Rush Creek); Rush Creek, s of Smoke Creek Ranch Road 1353 Comment
  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
  RSA95716  Gilia modocensis Verne Grant 1955-6-8 9666 Lassen c. 2 miles north of Doyle. 1311 Comment
Read comments
May 2 2012
  UC1583986  Gilia sinuata G. Schoolcraft 1990-6-12 2091 Lassen about 17 mi e Ravendale (in Pine Dunes RNA); Pine Dunes RNA, e of Ravendale 1706 Comment
  CAS-BOT-BC181062  Glossopetalon spinescens G. Schoolcraft 1989-5-31 1887 Lassen Skedaddle Creek area n. of Wendel Hwy. 1402 Comment
  JEPS28295  Glyceria borealis George W. Gillett 1957-7-26 922 Lassen Lassen Volcanic Nat'l Park, Butte Lake 1844 Comment
  JEPS96135  Glyceria borealis Vernon H. Oswald and Lowell Ahart 1996-6-24 7872 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road, in Papoose Creek where it leaves the n end of meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  RSA0030654  Glyceria borealis Anthony Baniaga 2011-7-23 463 Lassen Lassen National Forest. Poison Lake. 1700 Comment
  CHSC106065  Gnaphalium palustre Lowell Ahart; John Dittes 2010-7-31 16995 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
  RSA0105586  Gnaphalium palustre Lowell Ahart, John Dittes 2013-7-22 18861 Lassen 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC60414  Gratiola ebracteata Mary Ann Showers 1992-6-13 2543 Lassen Shoreline at western end of Widow Lake. Lassen Volcania National Park. 2072 Comment
  CHSC60854  Gratiola ebracteata Vernon H. Oswald; Lowell Ahart 1993-6-28 5625 Lassen N of Hwy. 44 along Rd. 33N47 at the NE end of Little Harvey Valley, between Champs Flat and Harvey Valley, E of Poison Lake. 1737 Comment
  UC444903  Gratiola neglecta Milo S. Baker 1899-8-24 Lassen Carmichael's Mill Big Valley (Big Valley) Comment
  UCD55266  Grayia spinosa Ellen Dean 2006-5-15 3064 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1249 Comment
  JEPS127268  Grindelia hirsutula Lowell Ahart, John Dittes 2016-7-13 21107 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. Comment
  CHSC7652  Grindelia squarrosa Beverley J. Wise 1968-8-28 20 Lassen 1.5 mi. north on Crazy Harry Canyon Road off Hwy 36 (Las. Co. Rd. no. 230). 1584 Comment
  CAS-BOT-BC304680  Grindelia squarrosa Margaret Williams 1974-8-4 74 -L-84 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC1123890  Gymnosteris parvula A. Simontacchi 1940-5-14 717 Lassen 10.2 mi e of Coyote Spring (Lassen National Forest); Lassen National Forest 1699 Comment
  SEINET3818101  Habenaria leucostachys A. A. Heller 1938-1 Lassen Comment
  JEPS103223  Hackelia amethystina G. Schoolcraft 1981-6-12 455 Lassen Gold Run Rd. on lower slopes of Diamond Mtn. 1889 Comment
  UC1483851  Hackelia californica G. Schoolcraft 1980-7-15 310 Lassen w of Bieber; Big Valley Mountain 1798 Comment
  CAS-BOT-BC231157  Hackelia cusickii Mrs. A S. Baldwin 1927-5-19 s.n. Lassen Lava beds Comment
  UC1553392  Hackelia cusickii G. Schoolcraft 1988-7-7 1810 Lassen about 14 air mi ne of Ravendale 1798 Comment
  NY537530  Halogeton glomeratus T. H. Kearney 1951-8-20 28229 Lassen Honey Lake Valley near Herlong 1280.2 Comment
  UCD98884  Halogeton glomeratus Les Berry; J. L. Myler 1954-8-17 s.n. Lassen Karlo. Comment
  UCD98889  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  UCD98893  Halogeton glomeratus Les Berry; J. L. Myler, Beecher Crampton 1954-8-17 s.n. Lassen near Karlo. Comment
  CAS-BOT-BC314764  Helianthella californica var. nevadensis A. M. Vollmer; L. Beane 1953-7-1 37 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS78105  Helianthus annuus G. W. Zamzow 1972-7-18 87 Lassen beside Hwy 395 16.8 mi s intersection with Highway 36 1280 Comment
  JEPS25527  Helianthus cusickii Rimo Bacigalupi with Lincoln Constance 1959-6-16 7141 Lassen beside Hwy 395 one-fourth mi s of junction road to Smoke Creek 1341 Comment
  RSA302646  Helianthus cusickii J. R. Shevock 1972-5-20 1818 Lassen Near Johnsonville, Hwy 395. Comment
  CHSC76090  Heliotropium curassavicum Lowell Ahart; Vernon H. Oswald 1999-9-13 8219 Lassen In a field, about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife Area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  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
  UCD73908  Heliotropium curassavicum var. oculatum Rebecca Epanchin-Niell 2001-6-14 44 Lassen Jay Dow, Sr. Wetlands (owned by University of Nevada, Reno) on the south side of Honey Lake. Comment
  CHSC77177  Heracleum lanatum G. Schoolcraft 1997-7-30 2618 Lassen W slope of Dimond Mtn. 1950 Comment
  UC1776662  Heracleum lanatum G. Schoolcraft 1994-8-2 2404 Lassen About 1 mile W of Boot Lake 2133 Comment
  HSC29978  Hesperochiron californicus D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19191 Lassen Harvey Valley near Cone Springs Comment
  NY1082476  Hesperochiron californicus A. Tiehm 1986-5-12 10348 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  UC124518  Hesperochiron californicus T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  RSA122625  Hesperochiron pumilus L. R. Short 1936-4-28 S- 329 Lassen Harvey Valley. Lassen Forest. 1707 Comment
  CHSC23743  Hesperolinon micranthum M. S. Taylor 1974-7-10 272 Lassen Scattered on e side of Gallatin Beach Rd, ca. 3 mi s of Gallatin Beach on Eagle Lake, ca. 12 mi nw of Susanville. 1524 Comment
  UC1601274  Hesperolinon micranthum Leo Whitney 1934-9-5 1889 Lassen between Susanville and Westwood; Lassen National Forest, Fredonyer Pass 1706 Comment
  RSA127454  Hesperolinon micranthum Peter H. Raven, Otto T. Solbrig 1958-6-17 13300 Lassen 8.0 miles north of Madeline along Unites States Highway 395. Comment
  UCD85293  Hesperostipa comata Beecher Crampton 1954-7-6 2068 Lassen an artemisia flat, along US Hwy. 395, 1 mile east of Johnstonville. Comment
  CHSC72301  Heterotheca villosa var. minor L. P. Janeway; Glenn Clifton 1998-7-9 5740 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
  SEINET7106129  Heterotheca villosa var. minor Richard R. Halse 2010-8-26 8091 Lassen Along State Hwy. 70 at Beckwourth Pass ca 4.3 miles west of its junction with U.S. Hwy. 395 or 1.6 miles E of Sierra Valley.; 0 1584 Comment
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  CHSC98320  Hieracium greenei B. Castro; L. P. Janeway 2005-7-10 1505 Lassen Northern High Sierra Nevada. Ca 1-2 mi E of Westwood, on N side of Hwy 36. In flat open ridge area within Jeffrey pine/Pondersosa pine forest. Township/Range approximate location. 1566 Comment
  CHSC65298  Hieracium scouleri var. scouleri Vernon H. Oswald 1995-8-21 7206 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the W side of the lake. 1859 Comment
  CHSC66245  Hippuris vulgaris Vernon H. Oswald; Lowell Ahart 1996-6-24 7885 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Localized colony in shallow water in marshy meadow on the E side of Papoose Creek N of the springs. 1633 Comment
  CHSC7206  Hippuris vulgaris Bruce K. Briggs 1969-9-10 232 Lassen Pond at Deans Meadow on N. end of meadow. Comment
  JEPS97329  Hippuris vulgaris Vernon H. Oswald 1995-8-21 7211 Lassen T38N R15E SE1/4 Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  JEPS124841 Image available Hippuris vulgaris Joe Ammirati 1964-6-30 73 Lassen N. of Susanville 17 mi. on High. 139. Comment
  UCD85278  Hordeum brachyantherum A. A. Beetle 1941-6-28 2818 Lassen 6 miles south of Ravendale. Lower slopes of Observation Peak. Comment
  CAS-BOT-BC280893  Hordeum brachyantherum subsp. brachyantherum George W. Gillett 1957-7-29 951 Lassen Lassen Volcanic National Park. Trail between Butte Lake and Snag Lake 1859 Comment
  CHSC41842  Hordeum brachyantherum subsp. brachyantherum P. V. Caldwell 1972-7-12 273 Lassen 300 meters from Eagle Lake on Papoose Creek. Comment
  CHSC75571  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald; Lowell Ahart 1999-6-9 9751 Lassen Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Along a drainage below the dam of the reservoir. 1353 Comment
  POM112122  Hordeum brachyantherum subsp. californicum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  JEPS114836  Hordeum jubatum Lowell Ahart, John Dittes 2008-6-22 15021 Lassen On east side of the levee, about 20 yards south of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  UC53726  Hordeum jubatum J. Burtt Davy 1897-6-17 Lassen Reus Comment
  CHSC36189  Horkelia fusca subsp. parviflora M. S. Taylor; B. Hammond 1982-7-8 4789 Lassen Along spur rd ca. 1/3 mi w of Scott Rd, ca. 1.5 mi ne of Beckwourth Pass. 1463 Comment
  CAS-BOT-BC143982  Horkelia fusca var. tenella John Thomas Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  CAS-BOT-BC55477  Hornungia procumbens Arnold Tiehm; Margaret Williams; Gary Schoolcraft 1986-5-12 10350 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
  CHSC65301  Hornungia procumbens Vernon H. Oswald; Lowell Ahart 1995-8-14 7202 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) on the E side of Horse Lake, 13.5 mi W of Hwy. 395, N of Susanville. On the shore of the lake. 1560 Comment
  CAS-BOT-BC213003  Hosackia crassifolia John Thomas Howell 1974-7-10 50551 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC213001  Hosackia crassifolia H. D. Ripley; R. C. Barneby 1943-6-14 5438 Lassen Volcanic hillskide, in open pine woods, Susanville 1402 Comment
  UC1069096  Hydrophyllum capitatum var. alpinum A. Simontacchi 1940-5-10 692 Lassen 4.5 mi sse Black Mtn., B.M. 7310; Lassen National Forest, Halls Flat Quad. 1752 Comment
  CHSC118790  Hymenoxys cooperi L. P. Janeway; B. Castro 2015-6-5 11756 Lassen Great basin, Modoc Plateau. Along the road from the south end of Surprise Valley to Tuledad Canyon, 7.4 road-km south of Surprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  POM66398  Hymenoxys lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  SEINET10472162  Hypericum formosum subsp. scouleri Mary Susan Taylor 1974-1 Taylor 283 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC13636  Hypericum formosum var. scouleri 1974-7-10 283 Lassen Abundant along creek in meadow ca. 2 mi e of Gallatin Beach, ca. 1/2 mi s of Eagle Lake, ca. 13 mi nw of Susanville. 1524 Comment
  CHSC41841  Hypericum formosum var. scouleri P. V. Caldwell 1972-7-13 271 Lassen Eagle Lake. Growing scattered on edge of upper Papoose Creek above forest road to Papoose Meadows. Comment
  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
  CDA36537  Hypericum formosum var. scouleri T. C. Fuller 1959-7-6 4304 Lassen Hwy. 36, about 1 mi. north of Westwood. 0 Comment
  UC117500  Idahoa scapigera T. S. Brandegee 1892-6-30 Lassen Susanville Comment
  JEPS128411  Iliamna bakeri Jennifer Mueller 2017-8-15 CA 370 -263 Lassen Below Tuledad Valley Ranch take the access road into the Cottonwood Mountains towards the Dodge Fire. Comment
  NY52522  Iliamna bakeri G. Schoolcraft 1984-8-27 1371 Lassen Eastern slopes of Little Hat Mtn. 1981.2 Comment
  JEPS816  Ipomopsis aggregata Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  RSA748951  Ipomopsis congesta J. R. Shevock, Barbara Ertter 1986-7-20 11741 Lassen Ash Valley BLM Research Natural Area. Along Ash Valley Road about 16 miles W of Madeline and U.S. Hwy 395. 1550 Comment
  UC584300  Ipomopsis congesta G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2269 Lassen s Susanville (sw of Diamond Mt.) 2164 Comment
  SD7674  Ipomopsis congesta Mrs. R. M. Austin 1880-1 Lassen Lassen Peak. Comment
  CHSC63410  Ipomopsis congesta subsp. congesta V. H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 1994-6-26 6354 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
  CHSC111244  Iris missouriensis B. Castro; L. P. Janeway 2012-7-2 1936 Lassen Modoc Plateau. 32 air mi due E of Susanville, 12 mi E of Hwy 395 and 3 mi W of the NV border. East side of Skedaddle Moun-tains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1604 Comment
  UC117143  Iris missouriensis Mrs. R. M. Austin 1879-1 302 Lassen Eagle Lake Comment
  JEPS88085  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1996-6-24 7848 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd (A1), Papoose Meadows, w side of meadow just s of the cabins); Modoc Plateau 1633 Comment
  CHSC77255  Isolepis G. Schoolcraft 1997-8-4 2675 Lassen W of Willow Creek Valley. 1554 Comment
  CAS-BOT-BC324779  Iva axillaris M. S. Taylor 1982-8-19 5022 Lassen E side of Highway 395 ca. 4 miles north of its junction with Highway 70 at Hallalujah Junction 1493 Comment
  UC1924201  Iva axillaris Debra Valov 2005-8-20 2005225 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1280 Comment
  CHSC76086  Iva axillaris subsp. robustior Lowell Ahart; Vernon H. Oswald 1999-9-13 8227 Lassen Along a slough, 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
  RSA126721  Iva axillaris subsp. robustior Peter H. Raven, Otto T. Solbrig 1958-6-17 13265 Lassen Along Hwy 395, 11.8 miles NE of Litchfied Comment
  CDA20368  Iva axillaris var. robustior D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  CDA8046  Iva xanthifolia Lee Wheeler 1963-7-16 Lassen Susanville. 0 Comment
  RSA0005627  Ivesia paniculata B. Kelly 1977-8-9 559 Lassen Along dirt road from Adin 16 1/4 mi W of Madeline Comment
  CHSC30617  Juncus balticus M. A. Dubin 1975-7-20 7 Lassen Marsh 0.8 miles NE of Eagle Lake Field Station. 1569 Comment
  UC1100949  Juncus balticus Verne Grant and Irving Schneider 1947-7-31 8211 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC1542936  Juncus balticus G. Schoolcraft 1987-5-18 1701 Lassen 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  GMDRC7742  Juncus balticus subsp. ater J. M. Andre, G. Clifton 1993-6-11 33423 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  UC1142944  Juncus balticus subsp. ater A. L. Hormay 1941-6-18 4 Lassen Little Harvey Valley Lassen National Forest 1676 Comment
  UC1567409  Juncus bufonius G. Schoolcraft 1989-7-18 1981 Lassen near Bucks Spring (s of Clarks Valley Road) 1874 Comment
  CHSC59101  Juncus bufonius var. bufonius Vernon H. Oswald; Lowell Ahart 1992-8-25 5187 Lassen Lassen Volcanic National Park. Alluvial fan of Grassy Creek at the S end of Snag Lake. 1850 Comment
  JEPS121285  Juncus bufonius var. bufonius Lowell Ahart, John Dittes 2013-7-23 18907 Lassen On the SW side of a man-made pond, about 160 yards NW of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS67134  Juncus ensifolius W. L. Jepson 1918-8-2 7794 Lassen Constantia Honey Lake Valley 1219 Comment
  JEPS118350  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
  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
  CAS-BOT-BC312669  Juncus luciensis John Thomas Howell; Louella Bass 1974-7-10 50538 Lassen Elysian Valley 1325 Comment
  UC1543894  Juncus luciensis John Thomas Howell and Louella Bass 1974-7-10 50538 Lassen Elysian Valley Sierra Nevada 1325 Comment
  CAS-BOT-BC110768  Juncus mertensianus John Thomas Howell; Gordon H. True 1973-8-1 50249 Lassen Sierra Nevada. Diamond Range. Gold Run Creek road south of Susanville. 1950 Comment
  SEINET10533379  Juncus mexicanus Douglas G. LeDoux, David B. Dunn 1975-5-25 LeDoux 791 Lassen Collected 3 miles n of milford on hwy. 395 At honey lake campgrounds Comment
  CHSC67714  Juncus nevadensis James D. Jokerst 1983-7-25 1899 Lassen Madeline Plains W of Termo. Comment
  JEPS28706  Juncus nevadensis George W. Gillett 1957-7-28 934 Lassen Widow Lake Lassen Volcanic National Park 2072 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
  UC1601784  Juncus nevadensis Baker and Nutting 1894-7-3 Lassen Dixie Creek Comment
  JEPS107949  Juncus tiehmii Lowell Ahart, John Dittes 2005-6-2 11959 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  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
  JEPS121379  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen S side of Route 44, SE end of Grays Valley near Lodgepole, yellow pine forest Comment
  UCD133732  Juniperus californica Grady L. Webster; with Bot. 102 class 1989-5-13 7703 Lassen Scattered in sagebrush scrub on rolling slopes 2.5 mi E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC81148  Juniperus occidentalis Doris Kildale Gillespie 1930-5-12 9322 Lassen 2 miles north of Susanville on road to Alturas Comment
  CHSC5037  Juniperus occidentalis L. B. Barlow 1967-7-16 131 Lassen Eagle Lake Biological Station, east central side of Eagle Lake. 1554 Comment
  CHSC66  Juniperus occidentalis K. McKenzie 1928-4-10 Lassen Near Bieber in Big Valley. Comment
  RSA597842  Juniperus occidentalis var. australis F. C. Vasek 1962-9-3 620903 -1 Lassen State Highway 36, 3.6 miles west of Ranger Station, west of Susanville 1524 Comment
  POM119004  Juniperus occidentalis var. occidentalis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA597841  Juniperus occidentalis var. occidentalis F. C. Vasek 1964-9-12 640912 -8 Lassen Road to Karlo, 3.8 miles from its junction with the Litchfield - Leavit Road Comment
  CHSC23328  Juniperus osteosperma Mark Stopher 1976-1-11 30 Lassen Ca. 52 miles south of Susanville on Hwy 395 then two miles east on Red Rock Road. 1328 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  UCR268962  Kelloggia galioides Jim Andre, Tasha La Doux, Senna T. Andre, Elias Andre 2013-7-12 31426 Lassen along north side of Hwy 44 at south end of Grays Valley, along National Forest Route 33N02, north of Bogard Buttes, c. 30 mi west of Susanville 1733 Comment
  CDA42199  Kelloggia galioides T. C. Fuller 1963-7-15 10906 Lassen Prescott Canyon, 2.5 miles north of Hayden Hill, ca. 15.5 miles south of Adin. 0 Comment
  SEINET10869776  Kelloggia galioides Mary Susan Taylor 1974-1 Taylor 273 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  JEPS97318  Kochia scoparia Vernon H. Oswald and L. Ahart 1995-8-14 7172 Lassen T30N R15E center N side Sec. 15, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 crossing a flooded playa (Mud Flat) 1.8 mi N of Smoke Creek Ranch Rd., N of Susanville 1348 Comment
  UC1136815  Koeleria macrantha George A. Fischer and Irwin H. Johnson 1933-8-3 F 278 Lassen Lassen Forest, <Lassen National Forest> 1737 Comment
  UC773971  Koeleria macrantha L. R. Short and D. Gish 1936-6-5 S- 373 Lassen Burgess Spring Experiment Range 1798 Comment
  CAS-BOT-BC271331  Koeleria pyramidata Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1615 Comment
  UC726003  Kyhosia bolanderi A. A. Heller 1938-9-1 15342 Lassen about 2 mi e of Westwood 1524 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
  CHSC5214  Lactuca tatarica subsp. pulchella 1944-8-11 Lassen Eagle Lake. 1584 Comment
  CDA8086  Lagophylla ramosissima T. C. Fuller 1964-10-7 12692 Lassen Hillside Cemetery, south side of Highway 299 to Fall River Mills, ca. 2 miles southwest of Nubieber. 0 Comment
  CHSC71865  Lagophylla ramosissima subsp. ramosissima Vernon H. Oswald; Lowell Ahart 1998-9-8 9575 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. 1255 Comment
  CHSC99304  Lamium amplexicaule Lowell Ahart; John Dittes 2008-6-20 14962 Lassen In meadow, about 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0036999  Lamium amplexicaule Lowell A. Ahart, John Dittes 2008-6-20 14962 Lassen About 30 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS120809  Lasthenia glaberrima Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen Near a drainage filled with dirt from construction of a pond, about 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley 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
  RSA0042601  Lasthenia glaberrima Lowell A. Ahart, John Dittes, Todd Sloat 2013-6-8 18739 Lassen About 100 yards west of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  POM277812  Lathyrus sulphureus Lyman Benson 1932-5-14 3584 Lassen Coarsegold 549 Comment
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Jul 2 2013
  CDA20367  Layia glandulosa D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  UC1101282  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-8-20 1483 Lassen 1 mi n of Doyle (Honey Lake Valley, Long Creek); Honey Lake Valley, Long Creek Comment
  HSC95343  Lemna valdiviana Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 697 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC112401  Lepidium campestre Lowell Ahart; John Dittes, Todd Sloat 2013-6-9 18782 Lassen Pasture field, about 100 yards west of the north-south road, on the west side of McArthur Diversion Canal, 2.1 air-miles of Rat Farm Boat Launch, 1.2 air-miles north of McArthur, Fall River Valley, McArthur Swamp. 1007 Comment
  HSC81481  Lepidium campestre Thomas W. Nelson, Jane P. Nelson 1980-7-6 6012 Lassen Along Adin-Madeline Rd., 15 mi. E of Adin in Ash Valley just beyond bridge at baths 1555 Comment
  JEPS114349  Lepidium campestre Lowell Ahart, John Dittes 2008-6-20 14957 Lassen In meadow, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CDA37688  Lepidium latifolium Robin Breckenridge 2004-7-1 s.n. Lassen East of Susanville. 0 Comment
  CHSC36453  Lepidium perfoliatum Susan H. Euing 1982-6-2 7 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd., ca. 10 yds e of Ravendale Rd. Comment
  CHSC525  Lepidium perfoliatum J. Wakeman 1963-5-11 Lassen 1 mi. north of Honey Lake. Near Hot Springs. Comment
  JEPS95731  Lepidium perfoliatum Vernon H. Oswald and L. Ahart 1995-6-19 6899 Lassen T30N R16E southeast corner Sect. 6, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395 1383 Comment
  RSA152592  Lepidium perfoliatum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16332 Lassen 13.5 mi. E of Susanville. Comment
  CAS-BOT-BC12987  Lepidium virginicum John Thomas Howell 1974-7-10 50531 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  UC1137720  Leptodactylon pungens George A. Fischer, Irwin H. Johnson 1933-7-12 F 202 Lassen Grass Valley; Lassen National Forest, Grass Valley 1700 Comment
  UC526131  Leptodactylon pungens John Thomas Howell 1934-7-9 12524 Lassen Pine Creek Flat Comment
  JEPS126521  Leptosiphon bolanderi Lowell Ahart, John Dittes 2016-6-7 20979 Lassen 10 yards west of the pond, 80 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  POM74199  Leptosiphon harknessii Marcus E. Jones 1897-7-2 10394 Lassen Susanville 1524 Comment
  RSA0092312  Leptosiphon harknessii Jim M. Andre, Tasha La Doux, Senna Andre, Elias Andre 2013-7-12 31424 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
  SJSU6034  Leptosiphon harknessii J. W. Tilden 1960-6-27 1507 Lassen outskirts of Westwood at foot of Moonlight Rd 1524 Comment
  CHSC68773  Leucocrinum montanum Vernon H. Oswald; Lowell Ahart 1997-5-27 8509 Lassen North of Susanville on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 0.3 mi east of Hwy. 139. 1560 Comment
  JEPS94470  Leucocrinum montanum Vernon H. Oswald and Lowell Ahart 1997-5-27 8509 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 small creek paralleling road on north); Forest Route 38N04 1560 Comment
  UC773857  Leucocrinum montanum L. R. Short 1936-5-1 S- 342 Lassen Burgess Spring Experiment Range; Lassen Forest 1699 Comment
  UCR201583  Leucocrinum montanum Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  CAS-BOT-BC508369  Leucocrinum montanum Louella Bass 1973-4-29 31 Lassen Elysian Valley, Sierra Nevada 1325 Comment
  OBI83366  Leucocrinum montanum Rhonda Riggins 1989-4-27 1650 Lassen US 395, 1.1 mi N Madeline, 8.8 mi S Modoc Co line 1676 Comment
  SEINET12044967  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek Comment
  SEINET6170686  Leucophysalis nana G. Schoolcraft 1999-6-29 2849 Lassen E edge of Madeline Plains ca 9 mi NE of Ravendale 1615 Comment
  UC614395  Lewisia nevadensis L. Constance 1938-6-11 2326 Lassen 5 mi sw Susanville 1371 Comment
  CHSC61168  Lewisia pygmaea Vernon H. Oswald; Lowell Ahart 1993-5-12 5387 Lassen Hwy. 44 between Poison Lake and A21 (to Westwood), 1.6 mi SE of Pittsville Rd. In a meadow on the N side of the road. 1719 Comment
  JEPS28403  Lewisia triphylla George W. Gillett 1957-7-21 863 Lassen 300 yds n Juniper Lake - Cameron meadow trail summit; Lassen Volcanic National Park 2118 Comment
  CAS-BOT-BC283769  Leymus cinereus Margaret Williams; Steven Williams 1974-7-26 74 -L-41 Lassen Burned area near Hallelujah Junction, W of Highway 395 and S of Highway 70 1493 Comment
  CAS-BOT-BC283771  Leymus cinereus John Thomas Howell 1974-7-10 50554 Lassen Elysian Valley 1325 Comment
  JEPS128173  Leymus cinereus M. C. Mahoney, J. A. Nash 2017-8-22 CA 350 -88 Lassen South of Pilgrim Lake of Buckhorn Byway. From Susanville take Highway 395 north to Buckhorn Byway and follow the road east past Buckhorn Reservoir and Dry Lake. Then take a right onto an unnamed road that is right on the CA/NV border. Continue for 1/2 mile. Population is on either side of the road. Comment
  UC921130  Leymus cinereus Vesta Holt 1945-8-12 Lassen in meadows near shore of Eagle Lake Comment
  UCD32674  Leymus cinereus Beecher Crampton 1954-7-6 2078 Lassen Lassen County, 3 miles south of Ravendale. Comment
  UCD64225  Leymus cinereus Beecher Crampton 1954-7-6 2070 Lassen Along US Hwy 395, 2 mi. east of Johnstonville. Comment
  UCD64268  Leymus cinereus L. D. Whitney 1935-6-27 Lassen Fruit Growers Supply Co. Camp #10. Comment
  CAS-BOT-BC274466  Leymus triticoides John Thomas Howell 1974-7-8 50467 Lassen Susanville 1295 Comment
  CDA18262  Leymus triticoides G. D. Barbe 1974-8-2 1924 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  RSA647531  Leymus triticoides Marion P. Harthill 1972-6-16 778 Lassen Doyle 1372 Comment
  SEINET239966 Image available Leymus triticoides G. L. Clifton 1996-6-5 34629 Lassen East of Herlong close to the railroad. 1234 Comment
  JEPS88528  Lilaea scilloides Vernon H. Oswald and Lowell Ahart 1996-6-24 7878 Lassen Papoose Meadows located 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), in Papoose Creek where it leaves the n end of the meadow, Modoc Plateau); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1609110  Limosella acaulis Vernon H. Oswald and Lowell Ahart 1993-6-14 5508 Lassen Lassen A21 (32N02) 5.3 mi e of Lassen 105 (32N28Y) ca 7 mi (air) w Eagle Lake (near Summit Camp); w of Eagle Lake 1889 Comment
  JEPS114652  Limosella aquatica Lowell Ahart, John Dittes 2008-6-20 14927 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber 1263 Comment
  JEPS96128  Limosella aquatica Vernon H. Oswald and Lowell Ahart 1996-6-24 7879 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau, Montane Meadow in Yellow Pine Forest, edge of Papoose Creek where it leaves the N end of the meadow 1633 Comment
  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
  UC1130238  Linum lewisii A. Simontacchi 1940-6-8 841 Lassen 4.1 mi e of Halls Flat Ranger Station (Lassen National Forest); Lassen National Forest 1737 Comment
  UC1136855  Linum lewisii L. R. Short and D. Gish 1936-6-5 S 385 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1760 Comment
  OBI77066  Lithophragma glabrum Anthony Baniaga 2011-6-7 316 Lassen Lassen NF. NW area of Grays Valley, just S of intersection of 33N11 and 32N83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  CHSC60768  Lithophragma tenellum Vernon H. Oswald 1993-6-3 5478 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 Poisen Lake and Susanville. 1731 Comment
  UCD102688  Lithophragma tenellum R. N. Raynor 1940-4-16 s.n. Lassen Big Valley. Comment
  UC1924198  Lithospermum ruderale Debra Valov 2005-8-21 2005231 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1279 Comment
  CHSC7698  Lolium multiflorum Beverley J. Wise 1969-5-23 132 Lassen 34.8 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  CAS-BOT-BC269059  Lolium perenne John Thomas Howell; Gordon H. True 1973-8-1 50187 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  SEINET8588544  Lomatium austiniae 2015-5-20 NV 030 -1058 Lassen Plumas Allotment. HWY 395 into CA, first median crossing after check station, turn right, follow road left (north) to proposed fence site perpendicular to power line 1460 Comment
  CHSC42595  Lomatium bicolor var. leptocarpum Vernon Oswald 1986-5-28 2048 Lassen Hwy 36, 11.3 mi e of the Plumas-Lassen Co. line, 0.5 mi sw of Fredonyer Pass. 1691 Comment
  CHSC66229  Lomatium bicolor var. leptocarpum Vernon H. Oswald 1996-6-24 7855 Lassen Papoose Meadows located ca.0.5 mi E of Eagel Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  JEPS105642  Lomatium bicolor var. leptocarpum L. P. Janeway 2001-6-19 7186 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain 1640 Comment
  JEPS96063  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1996-6-24 7855 Lassen 2.5 mi. s. Eagle lake (ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of meadow ca. 0.3 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1123077  Lomatium bicolor var. leptocarpum Robert W. Gardner 1939-6-6 G- 28 Lassen Harvey Valley Halls Flat Quad., Harvey Valley Comment
  UC1123089  Lomatium bicolor var. leptocarpum A. Simontacchi 1940-5-14 710 Lassen 10.2 mi E of Coyote Spring 1699 Comment
  UC1609378  Lomatium bicolor var. leptocarpum Vernon H. Oswald and Lowell Ahart 1993-6-28 5620 Lassen e. Poison Lake (n. of Hwy. 44 along Rd. 33N47 at n.e. end of Little Harvey Valley, between Champs Flat and Harvey Valley, meadow bordering a drying branch of Pine Creek); Little Harvey Valley 1737 Comment
  JEPS107835  Lomatium dissectum var. multifidum Lowell Ahart, John Dittes 2005-6-2 11930 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
  JEPS118183  Lomatium dissectum var. multifidum Dean W. Taylor 2004-5-11 19059 Lassen 1.5 miles southwest of Constantina along Highway 395 1402 Comment
  CHSC71064  Lomatium macrocarpum Vernon H. Oswald; Lowell Ahart 1998-5-22 9110 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  NY1066293  Lomatium macrocarpum B. M. Bartholomew 1993-5-13 6554 Lassen Just south of Ravendale. 1580 Comment
  RSA715615  Lomatium nevadense L. Ahart 2005-6-1 11847 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
  CHSC93705  Lomatium nevadense var. nevadense Lowell Ahart; John Dittes 2005-6-1 11847 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
  UC1123084  Lomatium nevadense var. parishii A. Simontacchi 1940-5-10 689 A Lassen 7.3 mi. w. Havey Mt. Lookout (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  CHSC29850  Lomatium nudicaule Robin Ondricek 1978-6-7 42 Lassen Lower Dry Lake along outer edges of shoreline. 1645 Comment
  UC1123087  Lomatium nudicaule A. Simontacchi 1940-6-13 856 Lassen 3.3 mi. w.-s.w. Patterson Mt. (Lassen Nat'l Forest); , Halls Flat Quad. Comment
  JEPS103161  Lomatium plummerae G. Schoolcraft 1996-5-13 2519 Lassen Ft. Sage OHV area 3 mi. NE of Doyle 1402 Comment
  JEPS94114  Lomatium plummerae Vernon H. Oswald and Lowell Ahart 1998-5-22 9111 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts. 0.6 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1402 Comment
  UC1187705  Lomatium plummerae Tracey and Viola Call 1961-5-30 1961 Lassen about 3 1/2 mi S of Ravendale Comment
  CAS-BOT-BC123126  Lomatium ravenii Lincoln Constance; Rimo Carlo Felice Bacigalupi 1959-6-14 3672 Lassen One mile S of Ravendale 1463 Comment
  RSA0049623  Lomatium ravenii Dean Wm. Taylor 2012-5-17 21208 Lassen Madeline Plains, at the western base of Juniper Ridge (ca. 5 miles E of Termo) 1615 Comment
  UC1177543 Image available Lomatium ravenii Peter H. Raven with Otto T. Solbrig 1958-6-17 13287 Lassen 1.8 mi. s. Ravendale (along U.S. Hwy. 395) Comment
  UC1479582 Image available Lomatium ravenii Gary Schoolcraft 1980-5-1 216 A Lassen Painters Flat, W edge 1716 Comment
  UC1483812 Image available Lomatium ravenii T. Prendusi, M. Meyer 1980-5-1 Lassen S of Ravendale 1615 Comment
  POM78597  Lomatium triternatum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  POM78598  Lomatium triternatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CHSC5018  Lomatium triternatum var. macrocarpum L. G. Bennett 1967-6-24 26 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  HSC28305  Lomatium utriculatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19255 Lassen Harvey Valley near Cone Springs Comment
  CHSC117768  Lomatium vaginatum L. P. Janeway; B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. 1846 Comment
  POM78250  Lomatium vaginatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  GMDRC7741  Lotus corniculatus J. M. Andre, G. Clifton 1993-6-11 33422 Lassen Modoc Plateau: NW of Snowstorm Mtn, approx. 3 mi. east of Horse Lake, 12 mi. S of Ravendale 1545 Comment
  CDA27193  Lotus crassifolius L. E. Allen 1967-6-4 Lassen Pinecrest Ranch, 0.5 mile south of Susanville. 0 Comment
  UC80952  Lotus nevadensis var. nevadensis T. S. Brandegee 1892-7-2 Lassen Susanville 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
  RSA622143  Lupinus B. J. Cox, Paul Gallian 1971-6-2 2590 Lassen Approx. 6 mi. S. of Susanville at Jct. of U.S. Hwy 395 and Calif. Hwy 36 to Susanville, near Johnstonville. 1311 Comment
  UC1181563  Lupinus albifrons R. F. Hoover 1940-10-1 4650 Lassen Johnstonville Comment
  CHSC65101  Lupinus angustiflorus Vernon H. Oswald; Lowell Ahart 1995-7-24 7131 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 of Pine Creek. 1950 Comment
  CHSC905  Lupinus arbustus R. Gein 1946-6-20 Lassen Mt. Fredonyer. 2133 Comment
  CHSC91669  Lupinus arbustus L. P. Janeway 2005-7-4 8475 Lassen High Cascade Range. 33 m east of Road A21 at the Road 104 junction; south of Clover Valley and east of Barnes Flat; 5.6 air km north-northeast of Swain Mountain. 1775 Comment
  SEINET10490461  Lupinus arbustus subsp. arbustus Paul Gallian, Billy Joe Cox 1971-6-2 Gallian 478 Lassen Ca 3 miles s of janesville at honey lake, rest area on us hwy 395; in Sagebrush-grass margin between jeffery pine-oak forest and honey lake 1250 Comment
  NY732864  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1985-6-12 1417 Lassen 1/2 mile south of Cleghorn Flat 1890 Comment
  POM252845  Lupinus arbustus subsp. silvicola A. A. Heller 1938-6-4 15142 Lassen In open places near Fredonyer Pass. 1707 Comment
  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
  UCR119030  Lupinus argenteus subsp. argenteus Beecher Crampton 1954-7-6 2079 Lassen Modoc Plateau, Madeline. 1524 Comment
  CAS-BOT-BC196338  Lupinus argenteus var. argenteus H. D. Ripley; R. C. Barneby 1944-5-30 5975 Lassen Ravendale 1676 Comment
  UCD35223  Lupinus argenteus var. argenteus Beecher Crampton 1954-7-6 2079 Lassen Madeline. 1524 Comment
  CAS-BOT-BC208736  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21497 Lassen 7 1/2 miles north of Bogard Staton, Bogard Ranger Station, Lassen Forest 1500 Comment
  CAS-BOT-BC208755  Lupinus argenteus var. heteranthus W. W. Eggleston 1927-7-14 21511 Lassen Willow Creek, near Hayden Hill, Modoc Forest 1500 Comment
  CAS-BOT-BC208761  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-6-13 47443 Lassen Highway 299, Nubieber, 6.6 miles west. Comment
  CAS-BOT-BC208763  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-5-23 47353 Lassen Johstonville, 1 mile south, Highway 395 Comment
  CAS-BOT-BC208768  Lupinus argenteus var. heteranthus A. B. Clawson 1935-7-13 C- 213 Lassen 3 mi. SW of Madeline Comment
  NY736928  Lupinus argenteus var. heteranthus W. A. Archer 1938-6-16 6019 Lassen 3 miles west of Doyle Comment
  SEINET10774227  Lupinus argenteus var. heteranthus Lowell Ahart, John Dittes 2010-7-31 Ahart 16977 Lassen T38N, R10E, center of north 1/2 Section 22. Stems from a plant 2 1/2 feet tall, on dry bare soil, 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. 1521 Comment
  SEINET5327809  Lupinus argenteus var. heteranthus G. Schoolcraft 1997-5-14 2589 Lassen W slope of Ft. Sage Mtns. 3 mi N of Doyle 1311 Comment
  HSC28310  Lupinus brevicaulis D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19280 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  CAS-BOT-BC196642  Lupinus breweri var. breweri Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1615 Comment
  RSA8059  Lupinus caudatus H. A. Barker 1927-7-15 806 Lassen Desert east of Beckwith near highway. Comment
  RSA3037  Lupinus confertus Carl B. Wolf 1931-9-6 2404 Lassen 0.5 mile from Jonesville on road to Wendel, western edge of Honey Lake Valley 1280 Comment
  CHSC4818  Lupinus lepidus var. confertus R. Carter 1967-7-16 618 Lassen Willow Creek Valley, e of Murrer's Ranch, 1.5 mi w of highway 139 on rd to Eagle Lake, ca. 12 mi n of Susanville, on s side of rd. Comment
  JEPS65081  Lupinus lepidus var. confertus W. L. Jepson Aug. 1918 7798 Lassen Raker Ranch near Buntingville; Raker Ranch naer Buntingville 1219 Comment
  SEINET5332986  Lupinus lepidus var. confertus R. R. Halse 2004-7-22 6670 Lassen Along U.S. Hwy 395, ca. 7.8 miles southeast of Susanville. 1293 Comment
  CHSC5290  Lupinus lepidus var. sellulus 1944-2-7 Lassen Eagle Lake. McCoy Flat. 1645 Comment
  UC1481378  Lupinus lepidus var. sellulus B. J. Cox 1971-6-11 3186 Lassen 3 mi E of Westwood ( on Ca. Hwy. 36) 1607 Comment
  UC1523798  Lupinus lepidus var. sellulus Gary Schoolcraft 1982-8-14 854 Lassen along Hwy 139 near Upper McBride Sp (se of Adin); near Upper McBride Sp. 1584 Comment
  OBI76907  Lupinus leucophyllus Anthony Baniaga 2011-7-9 437 Lassen Lassen Natl Forest. SW Pine Crk Valley. Pine Crk Valley quad. T31N R8E sec 10 NE of NE 1718 Comment
  UCD107952  Lupinus leucophyllus Verne Grant; Irving Schneider 1947-8-1 8232 Lassen Madeline Plain. Comment
  JEPS126528  Lupinus microcarpus var. microcarpus Lowell Ahart, John Dittes 2016-6-7 21018 Lassen On the west edge of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. Comment
  CHSC71085  Lupinus nevadensis Vernon H. Oswald; Lowell Ahart 1998-5-22 9113 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca. 5 mi NNE of Doyle. 1402 Comment
  SEINET10450707  Lupinus nevadensis Taylor 1982-5-29 Taylor 4567 Lassen In sage brush scrub along dirt rd parallelling hwy. 395, On its e side, ca 1/2 Mi n of hwy. 395 Jct with scott rd, ca 20 mi n of reno. With castilleja. Comment
  SBBG67020  Lupinus obtusilobus S. W. Hutchinson -Jun-1925 525 Lassen Eagle Lake 1554 Comment
  UC574453  Lupinus onustus M. E. Jones 1897-6-26 Lassen Perkin's Ranch Susanville (Susanville) 1463 Comment
  RSA0005617  Lupinus onustus Marcus E. Jones 1897-6-26 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
  HSC28314  Lupinus sellulus var. lobbii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19159 Lassen 3 mi. N of Westwood Comment
  SEINET10451647  Lupinus sellulus var. sellulus Billy Joe Cox 1971-6-11 Cox 3190 Lassen 6 mi w of susanville, on california hwy. 36; In volcanic soil; association with Pinus ponderosa forest. 1615 Comment
  UC429126  Luzula comosa var. laxa Franklin P. Nutting Lassen Pine Creek Northern California, Pine Creek Comment
  CDA40734  Lycopus americanus Yeager Aug 1929 s.n. Lassen Honey Lake District. 0 Comment
  CHSC117512  Lythrum hyssopifolia Lowell Ahart; John Dittes 2016-7-13 21125 Lassen Southwest wedge of the dirt dam, 30 yards east of Stonebreaker Road, 0.6 miles south of County road A-2, 5.3 miles (air) east if Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  JEPS107819  Lythrum hyssopifolia Lowell Ahart, John Dittes 2005-6-2 11969 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
  CHSC66727  Lythrum portula Vernon H. Oswald; Lowell Ahart 1996-8-1 8104 Lassen Mountain Meadows Reservoir of Westwood. On shore of reservoir NE of Indian Ole Dam. 1539 Comment
  UC905682  Madia citrigracilis David D. Keck 1930-7-23 949 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  CAS-BOT-BC342657  Madia citriodora David D. Keck; J. Clausen 1935-6-25 3761 Lassen Susanville 1300 Comment
  UCR67469  Madia elegans George K. Helmkamp 1990-10-4 M 11 Lassen Eastern Sierra Nevada Mountains, Plumas National Forest, south of Susanville, north of Milford Pass 1463 Comment
  CAS-BOT-BC343694  Madia elegans Elmer I. Applegate 1923-9-30 4034 Lassen Constantia Comment
  SD50990  Madia elegans Darley F. Howe 1960-9-21 Lassen 2 miles north of Janesville on #395 Comment
  RSA252466  Madia elegans subsp. densifolia R. F. Thorne, C. W. Tilforth 1969-9-6 39262 Lassen C. 0.7 mi. SE of Milford, along Hwy. 395 (W. of Honey Lake). 1280 Comment
  POM29904  Madia elegans subsp. elegans Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  SEINET515862  Madia glomerata Vernon H. Oswald 1998-9-8 9576 Lassen Hwy. 299 at the railroad overpass on the east side of Nubieber. 1256 Comment
  UC717967  Madia glomerata David D. Keck 1944-7-8 5447 a Lassen 2 mi e Westwood (in meadow leading down to Mountain Meadows Reservoir); Sierra Nevada 1524 Comment
  JEPS88244  Madia gracilis Vernon H. Oswald and Lowell Ahart 1996-6-17 7783 Lassen bank on n side of Hwy 36 between Bizz Johnson Trail and highway bridges spanning the Susan River (trail accessed at Devil's Corral Trailhead located off Hwy, ca. 7 mi w of Susanville); Modoc Plateau 1432 Comment
  RSA338583  Madia gracilis Noel Holmgren, Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale. 1677 Comment
  CHSC64758  Malacothrix torreyi Vernon H. Oswald 1995-5-24 6786 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) at milepost 18.5, ca. 1 mi e of Duck Lake Rd. On the s side of the road. 1219 Comment
  UC1567438  Malacothrix torreyi G. Schoolcraft 1989-5-31 1885 Lassen About 4 mi N Wendel Road, along Skedaddle Ranch Rdoad. 1493 Comment
  SEINET11601767 Image available Malacothrix torreyi A. Tiehm 1978-5-15 4159 Lassen 0.4 mile west of the Nevada stateline on highway 81 from Gerlach to Cedarville Comment
  CAS-BOT-BC179097  Malva neglecta Mrs. H. C. Cantelow 1940-5-31 4011 Lassen E. of Bieber Comment
  UCR67380  Malvella leprosa George K. Helmkamp 1990-9-23 A- 8 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CHSC106353  Marrubium vulgare Lowell Ahart; John Dittes 2010-8-30 17087 Lassen On the north side of the road, between Elkins Lane and Walters Road, 550 feet south of Modoc County Lane and Walters Road, 550 feet south of Modoc County Line, about 4.3 miles (air) west-southwest of Adin, about 7.3 miles (air) northeast of Bieber, Big Valley. 1274 Comment
  JEPS89847  Marsilea oligospora Dean W. Taylor 1974-6-14 3712 Lassen on Hwy. 44 ca. 2 mi. w. from junction w/ Pittville Rd.; Modoc Plateau, Poison Lake 1615 Comment
  UC62421  Marsilea oligospora Baker and Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC13512  Marsilea vestita K. R. Stern 1974-6-26 Lassen On s side of Hwy 44, 5.6 mi n of intersection with County Rd. A-21 to Westwood. Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC332743  Marsilea vestita R. F. Thorne; Larry E. DeBuhr 1975-8-22 46994 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  CHSC112768  Matricaria discoidea Lowell Ahart; John Dittes 2013-7-22 18862 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
  SCFS2169  Medicago sativa H. Naqui 1965-7-13 130 Lassen PCT dunes [?] bridge, Hwy 139 1402 Comment
  CHSC105237  Mentzelia albicaulis Lowell Ahart; John Dittes 2010-7-31 17019 Lassen On the north side of the road, about 10 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC60751  Mentzelia albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-14 5536 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). 1566 Comment
  JEPS107449  Mentzelia albicaulis Lowell Ahart, John Dittes 2005-6-1 11888 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
  JEPS29743  Mentzelia albicaulis Rimo Bacigalupi and L. R. Heckard 1962-5-28 8498 Lassen 2.7 mi n Milford (along U.S. highway 395) 1219 Comment
  SEINET247590  Mentzelia albicaulis Noel H. Holmgren, Patricia K. Holmgren 1980-7-4 9507 Lassen Observation Peak, south side of the mountain, 18 km (11 mi) air distance east of Ravendale. 1890 Comment
  CHSC5299  Mentzelia congesta R. Gein 1946-6-25 Lassen Webb's Camp, Eagle Lake. 1554 Comment
  CHSC91323  Mentzelia congesta Lowell Ahart; John Dittes 2005-6-1 11887 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
  CHSC4437  Mentzelia dispersa K. R. Stern 1967-6-30 2448 Lassen West Central side of Eagle Lake. 1554 Comment
  CHSC60836  Mentzelia dispersa Vernon H. Oswald; Lowell Ahart 1993-6-14 5511 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
  CHSC68893  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1997-6-24 8603 Lassen South of Susanville on the north side of Diamond Mtn. at a stream on Forest Rd. 29N43, 3.5 miles east of Gold Run Rd. (29N10). 1655 Comment
  JEPS42769  Mentzelia dispersa Milo S. Baker 1890-1 Lassen Milford Comment
  RSA712934  Mentzelia dispersa L. P. Janeway 2005-7-4 8470 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  UC1137741  Mentzelia dispersa George A. Fischer, Irwin H. Johnson F 229 Lassen Lassen National Forest, Patterson Flat 1737 Comment
  RSA152663  Mentzelia dispersa I. L. Wiggins, Dorothy Wiggins 1961-6-10 16323 Lassen Along California Highway 36 abut 6 miles W of Sussanville. Comment
  UC420650  Mentzelia montana T. S. Brandegee 1892-6-23 Lassen Honey Lake Comment
  SEINET8588508  Mertensia oblongifolia M. J. Williams, G. Schoolcraft, A. Tiehm 1986-1 86- 39 -1 Lassen 1.5 road miles W of turn to Dodge Reservoir, on road from Tuledad Canyon to Ravendale. 1707 Comment
  SD8380  Micranthes bryophora Mrs. R. M. Austin 1882-8-7 Lassen Kings Valley Comment
  CAS-BOT-BC429183  Micranthes oregana John Thomas Howell 1934-7-9 12516 Lassen Bridges Creek Spring Comment
  JEPS118157  Microseris laciniata subsp. laciniata Dean W. Taylor 2009-5-21 20606 Lassen Susanville; Susanville Peak, northerly flank along logging roads ca. 1.5 air miles E of Round Valley Reservoir 1706 Comment
  CHSC117189  Microseris nutans Lowell Ahart; John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  RSA122927  Microsteris gracilis subsp. gracilis Anonymous 1936-5-7 S- 343 Lassen Lassen National Forest, MDM, Burgess Spr. Exp. Range 1738 Comment
  RSA122924  Microsteris gracilis subsp. humilis L. R. Short 1936-5-7 S- 343 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  UC1776670 Image available Mimulus arvensis G. Schoolcraft 1994-7-6 2356 Lassen About 2 miles west of Boot Lake 2103 Comment
  UC1609131  Mimulus breviflorus Vernon H. Oswald and Lowell Ahart 1993-6-28 5609 Lassen ne Poison Lake (n of Hwy. 44 on Rd. 33N06, nne of Burgess Meadow, sse flank of mtn.); Harvey Mtn. 1798 Comment
  UCD122430  Mimulus breviflorus S. E. Schoenig 1998-7-5 98- 71 Lassen East side of Poison Lake, 50 meters W of Pitville Rd., 1.8 mi NW of Hwy 44. East of Railroad track. 1749 Comment
  RSA505419  Mimulus breviflorus Rimo Bacigalupi, S. Galen Smith 1957-6-28 5998 Lassen Ditches along U.S. Highway 395 on Madeline Plains, 3.1 miles south of Madeline 1616 Comment
  RSA716144  Mimulus floribundus L. Ahart, John Dittes 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1409 Comment
  JEPS10455  Mimulus guttatus W. L. Jepson 1939-8-11 19374 Lassen Milford 1280 Comment
  UC886176  Mimulus guttatus A. A. Heller 1938-6-22 15183 Lassen 1 mi s Westwood 1524 Comment
  JEPS97419  Mimulus latidens Vernon H. Oswald and L. Ahart 1995-6-19 6887 Lassen T30N R15E NW1/4 SE1/4 Sect. 14, 4430 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 1.7 mi e of Hwy. 395 1350 Comment
  UC699729  Mimulus moniliformis Farris Farris 1936-6-10 Lassen Diamond Mountain 1828 Comment
  POM43476  Mimulus moschatus var. longiflorus Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  UC1778585  Mimulus nanus S. E. Schoenig 1998-7-5 98 -72 Lassen Pumice by S side of Hwy 44 vicinity of Bogard campground. 1737 Comment
  LA38975  Mimulus nanus var. mephiticus Frank W. Peirson; 1926-6-24 6853 Lassen Madeline Plain Comment
  UC1537591  Mimulus nanus var. mephiticus Gordon H. True Jr. 1936-6-26 548 Lassen 2 mi e Eagle Lake (head of creek); Willow Creek 1584 Comment
  UCD149990  Mimulus nanus var. mephiticus William Anderson 1963-6-9 s.n. Lassen Honey Lake Valley. 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
  HSC81185  Mimulus nanus var. nanus Thomas W. Nelson, Jane Nelson 1980-7-6 6006 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS15594  Mimulus nanus var. nanus Milo S. Baker 1893-7-5 Lassen Dixey Valley Comment
  RSA60366  Mimulus nanus var. nanus E. K. Balls 1950-5-9 15953 Lassen 6 miles south of Milford, Hwy 395. 1296 Comment
  RSA536391  Mimulus pygmaeus Beth Corbin 1991-6-10 621 Lassen Pine Creek at Little Harvey Valley 8 miles NE of USFS Bogard Work Center. 1700 Comment
  RSA536392  Mimulus pygmaeus Beth Corbin, Steve Klukkert 1991-6-11 622 Lassen Burgess Meadow drainage, 3/4 mile NE of Harvey Station, 7 miles NE of USFS Bogard Work Center. 1690 Comment
  UC1037311  Mimulus torreyi Leo Whitney 1934-7-27 1808 Lassen 5 mi w lower end of Eagle Lake (near Antelope Mt.); Lassen National Forest 1737 Comment
  HSC20810  Mimulus torreyi M. T. Milligan 1964-7-16 138 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  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
  JEPS95713  Monardella odoratissima subsp. glauca Vernon H. Oswald and L. Ahart 1995-8-14 7192 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
  SEINET3152591  Monardella odoratissima subsp. glauca L. S. Rose 1940-6-15 40593 Lassen 10 mi. N of Susanville, Round Valley. 1524 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
  UC25488  Monardella odoratissima subsp. pallida M. S. Baker and Frank Nutting 1894-7-28 Lassen mts. s Eagle Lake Comment
  CHSC63392  Monolepis nuttalliana Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6315 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. 1871 Comment
  OBI77205  Monolepis nuttalliana Anthony Baniaga 2011-7-23 462 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1700 Comment
  UC1602197  Monolepis nuttalliana M. S. Baker and Frank Nutting 1894-7-2 Lassen s. side Dixey Mts. Dixey Mts. Comment
  CAS-BOT-BC444626  Montia chamissoi John Thomas Howell 1934-6-14 s.n. Lassen Near Lost Lake, Warner Mts. 2438 Comment
  CAS-BOT-BC444693  Montia chamissoi Lassen 1927 G. S. Crew 1927-6-25 25 Lassen Lassen National Forest. Norval Flat 2051 Comment
  JEPS87431  Montia chamissoi Vernon H. Oswald and Lowell Ahart 1993-6-14 5509 Lassen Lassen A21 (32N02) 7 air mi w Eagle Lake (5.3 mi e of Lassen 105 (32N28Y), near Summit Camp) 1889 Comment
  CAS-BOT-BC444691  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen Lassen Volcanic National Park. One mile above Butte Lake, on Widow Lake Trail. 1905 Comment
  UC1137155  Muhlenbergia asperifolia August L. Hormay 1932-8-12 Lassen se edge of lake Lassen National Forest, Eagle Lake Comment
  UCD86573  Muhlenbergia asperifolia Leo Whitney 1934-7-4 2212 Lassen Lassen National Forest. Eagle Lake. 1584 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
  UC589840  Muhlenbergia filiformis H. S. Yates 1936-8-12 6081 Lassen McKenzie Meadow Susanville Quadrangle 1524 Comment
  CAS-BOT-BC275159  Muhlenbergia richardsonis Parkison 1916-6-10 19 Lassen Harvey Valley 1676 Comment
  CHSC117514  Muhlenbergia richardsonis Lowell Ahart; John Dittes 2016-7-13 21146 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
  SJSU4296  Muhlenbergia richardsonis J. W. Tilden 1960-6-27 1511 Lassen outskirts of Westwood, foot of Moonlight Rd 1524 Comment
  UCD86900  Muhlenbergia richardsonis Beecher Crampton 1954-7-6 2073 Lassen 17 miles south of Ravendale, along US highway 395. 1524 Comment
  SEINET4690286  Muhlenbergia richardsonis G. Schoolcraft 1999-6-30 2852 Lassen Small res. 1 mi. w. of Horne Ranch-12 mi. e. of Ravendale, CA., Susanville 1646 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
  RSA377621  Muilla transmontana Christopher Davidson 1975-6-7 2762 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CAS-BOT-BC515650  Muilla transmontana H. D. Ripley; R. C. Barneby 1944-5-29 5953 Lassen South of Jamesville 1280 Comment
  JEPS96136  Myosotis discolor Vernon H. Oswald and Lowell Ahart 1996-6-24 7880 Lassen ca. 0.5 mi. e. of Eagle Lake Rd. (A1) and 2.5 mi. s. of Eagle lake (Papoose Meadows, along Papoose Creek where it leaves the n. end of the meadow); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  CAS-BOT-BC392249  Myosurus John Thomas Howell 1976-7-20 52033 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC392253  Myosurus apetalus G. Schoolcraft 1993-6-10 2290 Lassen N. of Clark's Valley Rd. e. of Red Rock Lake 1828 Comment
  UC1126101  Myosurus apetalus A. Simontacchi 1940-5-17 739 Lassen 5.9 mi s Patterson Mtn; Lassen National Forest 1706 Comment
  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
  CHSC64893  Myosurus minimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6895 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  CHSC99498  Myosurus minimus Lowell Ahart; John Dittes 2008-6-20 14940 Lassen In vernal pools and swales, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0035919  Myosurus minimus Lowell A. Ahart, John Dittes 2008-6-20 14940 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
  RSA0062303  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17531 Lassen Just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  CHSC66864  Myriophyllum sibiricum Vernon H. Oswald; Lowell Ahart 1996-9-10 8281 Lassen Mountain Meadows Reservoir SW of Westwood. Localized colony in shallow water along the railroad embankment at the northwest edge of the reservoir. 1539 Comment
  UCR153449  Myriophyllum sibiricum R. F. Thorne, C. W. Tilforth 1969-9-5 39132 Lassen Said Valley Reservoir, Said Valley Reservoir: Near junction of Grasshopper Road and Highway 139 1646 Comment
  UC133072  Nama aretioides var. multiflora Dr. Gustav Eisen 1891-1 Lassen Honey Lake Comment
  UC735061  Nama densa var. densa Lincoln Constance 1946-7-3 3098 Lassen w edge of Eagle Lake at Spauldings Eagle Lake; w edge of Eagle Lake at Spaldings 1706 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
  CHSC34341  Navarretia breweri A. W. Harvilik 1967-6-23 45 Lassen Collected on hyway 139 ca. 6 mi n of Susanville. Comment
  CHSC4873  Navarretia breweri R. Carter 1967-6-23 543 Lassen Ca. 5 yds. off N side of road. Comment
  CHSC6207  Navarretia breweri W. Vinyard 1946-6-12 Lassen Eagle Lake. Willow Creek. 1463 Comment
  RSA123149  Navarretia breweri L. R. Short, J. Warren 1936-6-5 S- 374 Lassen Lassen [National] Forest: MDM, Burgess Spr. Exp. Range 1799 Comment
  NY1012729  Navarretia breweri G. Schoolcraft 1983-6-28 1034 Lassen Eastern slopes of Amedee Mountains 1890 Comment
  SEINET11268213  Navarretia breweri Vernon H. Oswald, Lowell Ahart 1993-6-28 5592 Lassen Harvey Valley Rd. (33N02), 1.7 mi N of Hwy 44, E side of Grays Valley, E of Poison Lake.; 0 1719 Comment
  UCD37483  Navarretia breweri Beecher Crampton 1960-6-21 5744 Lassen Lassen County, 15 miles northeast of Susanville, Horse Lake Mountain Range. 1706 Comment
  CHSC1241  Navarretia capillaris 1944-6-30 Lassen Grasshopper Valley, N. of Eagle Lake. 1615 Comment
  CHSC44331  Navarretia divaricata Lowell Ahart; John Thomas Howell 1974-7-9 541 Lassen Along Eagle Lake Road, on the south-west side of Eagle Lake. 1584 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
  CHSC89736  Navarretia intertexta subsp. intertexta L. P. Janeway 2004-6-26 8144 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
  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
  CHSC58848  Navarretia intertexta subsp. propinqua Vernon H. Oswald; Lowell Ahart 1992-7-16 5111 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. On the bed of the creek on the bed of the reservoir. Blue-flowered plants collected at Long Lake. 1691 Comment
  UC1594648  Navarretia intertexta subsp. propinqua Vernon H. Oswald and Lowell Ahart 1992-7-16 5101 Lassen 1.2 mi se County Rd. A21 (Long Lake on the s of Hwy 44, between Old Station and Susanville); Long Lake 1745 Comment
  GMDRC6949  Navarretia leptalea subsp. leptalea J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31423 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  CAS-BOT-BC230387  Navarretia leucocephala subsp. minima James Jokerst 1983-7-24 1882 Lassen Near Madeline Plains 1614 Comment
  HSC63964  Navarretia leucocephala subsp. minima Teresa Prendusi 1980-7-1 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  JEPS120031  Navarretia leucocephala subsp. minima Lowell Ahart, John Dittes 2012-7-9 18288 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  UC1191627  Navarretia leucocephala subsp. minima Verne Grant and Irving Schneider 1947-7-31 8208 Lassen ne quarter of George Williams section 19 Madeline Plain Comment
  UC23714  Navarretia leucocephala subsp. minima M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  UCD48537  Navarretia leucocephala subsp. minima Gerald Dickinson 1963-7-3 75 Lassen Along U.S. Highway 299, 1 mile west of Bieber. 1249 Comment
  UC1137723  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  UC1143039  Navarretia linearifolia subsp. linearifolia L. R. Short and Wm. Gansberg 1936-7-3 S- 472 Lassen Burgess Spr. Exp. Range Lassen National Forest 1844 Comment
  SEINET12319552  Navarretia minima L. B. Barlow 1967-1 82 Lassen 6 mi N Susanville, Hwy 139 1524 Comment
  JEPS27169  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 1673 Lassen about 4 mi sw Gold Run Creek junction with Richmond Road (Gold Run Creek, s of Susanville); Gold Run Creek Comment
  SEINET10464780  Nemacladus capillaris Lauramay T. Dempster 1961-6-17 Dempster 1673 Lassen Gold Run Creek about 4 miles southwest of junction with Richmond Road, south ofSusanville Comment
  SEINET10972223  Nemacladus capillaris Hardham 1961-6-16 HARDHAM 7450 Lassen Gold Run Creek south of Susanville 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
  JEPS120810  Nemophila pedunculata Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18724 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC606930  Nemophila pedunculata L. Constance 1938-6-10 2323 Lassen 2.6 mi sw Fredonyer Pass (McKenzie Meadows at Coppervale Ranger Station, Chester--Susanville Road); sw of Fredonyer Pass, McKenzie Meadows 1524 Comment
  CHSC67175  Nestotus stenophyllus James D. Jokerst 1991-5-29 3305 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  CHSC13791  Nicotiana attenuata Anne Linda Brisk 1969-7-10 45 Lassen 1/4 mi N of ELBS. 1554 Comment
  HSC21264  Nicotiana attenuata R. G. Means 1962-7-4 67 Lassen 7 mi. N of Susanville, Hwy. 139 1585 Comment
  SEINET10832656  Nicotiana attenuata Mary Susan Taylor 1974-1 Taylor 270 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  HSC68183  Nothocalais troximoides J. P. Smith, J. O. Sawyer 1971-5-23 4658 Lassen Along Hwy. 139, 23 miles south of junction with road to Thermo. Comment
  UC1609113  Nothocalais troximoides Vernon H. Oswald and Lowell Ahart 1993-6-14 5504 Lassen Champs Flat Rd. (Lassen A21/105, Forest 32N02) 1.8 mi n Hwy 44 (between Poison Lake and Susanville) 1749 Comment
  UC584293  Nothocalais troximoides G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2309 Lassen w Milford; crest of range head of Stony Ridge 1950 Comment
  UC682109  Nothocalais troximoides G. L. Stebbins Jr. with A. A. Beetle 1942-5-30 3238 Lassen on road to Adin 5.2 mi e Bieber 1280 Comment
  UCD134648  Nothocalais troximoides G. Schoolcraft 1993-6-10 2295 Lassen South of CR. 512, south of Red Rock Lake. 1828 Comment
  RSA0009448  Nuphar lutea subsp. polysepala Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS124827 Image available Oenothera cespitosa M. L. Wheelis 1964-6-30 125 Lassen 16 miles north of Hallelujah Junction, highway 395. Comment
  HSC31754  Oenothera cespitosa var. marginata Donald Spalinger 1974-5-16 65 Lassen E of Hurlong in the Doyle Winter Deer Range 1220 Comment
  HSC22878  Oenothera deltoides John Pratt 1970-6-14 16 Lassen East of Janesville Comment
  CHSC71093  Oenothera deltoides subsp. piperi Vernon H. Oswald; Lowell Ahart 1998-5-22 9095 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. On roadside banks along this section of highway. 1255 Comment
  SEINET10491875  Oenothera deltoides subsp. piperi Billy Joe Cox, Paul Gallian 1971-6-2 Cox 2591 Lassen Approx 6 mi s of susanville at jct of us hwy 395 and calif hwy 36 to susanville, near johnstonville. Assoc; purshia-artemesia. 1311 Comment
  NY998638  Oenothera deltoides var. piperi W. W. Eggleston 1911-9-3 7705 Lassen Vicinity of Doyle Station 1290 Comment
  UC1562804  Oenothera elata subsp. hookeri Barbara Ertter 1987-7-24 7304 Lassen ca 3/4 mi ene Beckwourth Pass (at end of old crumbling paved rd) 1524 Comment
  RSA0054993  Oenothera tanacetifolia James R. Shevock 1972-5-20 1817 Lassen S. of Ravendale, HIghway 395. 1371 Comment
  CDA36768  Onopordum acanthium D. B. Joley 1976-6-16 1 Lassen Grasshopper Lake, on Highway 139, 33 miles north of Susanville. 0 Comment
  JEPS88402  Oreostemma alpigenum var. andersonii Vernon H. Oswald and Lowell Ahart 1996-8-1 8121 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi n Dyer Mtn. Lookout (ssw of Westwood) 1737 Comment
  JEPS22322  Orobanche uniflora subsp. occidentalis Peter H. Raven and Otto T. Solbrig 1958-6-16 13251 Lassen 4.5 miles east of Westwood on State Highway 36. Comment
  CAS-BOT-BC500324  Orobanche uniflora subsp. occidentalis H. C. Cantelow 1941-5-22 s.n. Lassen Fredonyer Pass, 18.5 mi W of Susnville, Hwy 36 Comment
  SEINET10549655  Orthocarpus copelandii Mary Susan Taylor 1974-1 Taylor 307 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UCD18956  Orthocarpus cuspidatus subsp. copelandii Raymond D. Ratliff 1965-7-17 21 Lassen Lassen National Forest, Lyon's hgd., Harvey Valley Allot. 1706 Comment
  CHSC12936  Orthocarpus cuspidatus subsp. cryptanthus K. R. Stern 1974-6-26 5870 Lassen N margin of meadow on s side of Hwy. 44, 5.6 mi n of intersection with County Rd. A-21 to Westwood. Comment
  SEINET13756747  Orthocarpus cuspidatus subsp. cryptanthus N. H. Holmgren, Patricia K. Holmgren 1978-6-12 8933 Lassen Upper Smoke Creek, just south of Observation Peak, 17 km (10.5 mi.) airline distance east-southeast of Ravendale. 1768 Comment
  JEPS124596 Image available Orthocarpus imbricatus Dixie Funnell 1965-7-13 146 Lassen 4.2 miles West of Dead Horse Summit Highway 89. Comment
  SD232782  Oxytheca dendroidea subsp. dendroidea Greg R. Ballmer 1993-7-31 Lassen Sandy flats along Fort Sage Road, NE of Doyle, SE of Honey Lake, ca. 2 - 5 mi. (airline) W of Nevada border. Comment
  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
  JEPS95971  Packera multilobata Vernon H. Oswald and L. Ahart 1999-6-9 9734 Lassen Hwy. 395 northeast of Susanville and north of Smoke Creek Ranch Rd. at Mud Flat: T30N R15E Sect. 3, 4425 ft elevation, dry playa surrounded by sagebrush scrub 1348 Comment
  CHSC93246  Packera streptanthifolia John Dittes; Scott Chamberlain 2004-6-28 1011 Lassen Modoc Plateau; Long Valley; ca. 2.0 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. 1448 Comment
  UC35992  Packera subnuda M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  POM99648  Paeonia brownii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  RSA624912  Paeonia brownii B. J. Cox, D. B. Dunn 1971-6-2 2604 Lassen 6 mi. N. of Hallelujah Jct. on U.S. Hwy 395 in Artemisia tridentata. Pinyon pine, Jeffery Pine along high ridge and in sandy wash. 1402 Comment
  UC1131606  Panicum capillare H. S. Yates 1936-8-11 6073 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  SEINET3133156  Panicum lanuginosum var. fasciculatum R. W. Spellenberg 1965-7-15 1229 Lassen Lassen Volcanic NP, Devil's Kitchen Comment
  CDA5733  Pectocarya penicillata L. Ahart, J. Dittes 2005-6-1 11907 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. Comment
  CHSC71076  Pectocarya penicillata Vernon H. Oswald; Lowell Ahart 1998-5-22 9092 Lassen Hwy. 395 at an intermittent drainage crossing the road 2.3 mi south of Milford. 1255 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
  RSA294197  Pectocarya penicillata A. Tiehm 1980-5-29 5753 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  HSC68839  Pedicularis centranthera Gary Schoolcraft 1980-4-30 211 Lassen W of Shaffer Well, N of Shaffer Mtn. 1354 Comment
  JEPS94553  Pedicularis groenlandica Vernon Oswald and Lowell Ahart 1997-6-24 8652 Lassen s of Susanville (just s of the small pond on the crest of Diamond Mountain, about midway between Aspen Flat and Red Rock Lookout); crest of Diamond Mountain 2249 Comment
  UC1136981  Pedicularis semibarbata L. R. Short and J. Warren 1936-6-9 S 410 Lassen Burgess Spr. Exp. Range Lassen National Forest 1859 Comment
  JEPS11489  Penstemon cinicola Jos. Grinnell 1928-6-26 Lassen Butte Lake 1889 Comment
  SEINET10547960  Penstemon confusus Billy Joe Cox, David B. Dunn 1971-6-2 Cox 2607 Lassen 6 mi n of hallelujah jct on us hwy 395, in artemisia tridentata, pinyon pine, Jeffery pine along ridge and in sandy wash. 1402 Comment
  SBBG66504  Penstemon deustus S. W. Hutchinson -Jun-1925 1075 Lassen Eagle Lake 1554 Comment
  RSA715656  Penstemon deustus subsp. heterander L. Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Rd. and Highway 70, 5.7 mi. (air) northwest of Halleluiah Junction. 1411 Comment
  POM203059  Penstemon deustus subsp. sudans J. T. Howell 1934-6-10 11880 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  CHSC77237  Penstemon deustus var. pedicellatus G. Schoolcraft 1998-7-8 2749 Lassen E. of Camel Rock near Secret Valley area. 1463 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
  SEINET5326727 Image available Penstemon deustus var. pedicellatus P. A. Lehenbauer 1937-5-30 s.n. Lassen 60 miles north of Reno, on Feather River, near Feather River Inn. Comment
  RSA537557  Penstemon gracilentus Barbara Ertter 1988-7-25 7866 Lassen ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air miles due S of Susanville. 2256 Comment
  UC1035884  Penstemon gracilentus Annie M. Alexander and Louise Kellogg 1946-8-13 5157 Lassen w side of Eagle Lake Comment
  UC1063167  Penstemon gracilentus H. P. Hagge 1935-9-12 27 Lassen Logan Mtn. Eagle Lake Quad., Logan Mtn. Comment
  UC1063186  Penstemon gracilentus A. Simontacchi 1940-6-20 851 Lassen 4.1 mi w Harvey Mountain Lookout; Lassen National Forest, Hall's Flat Quad. Comment
  UC1537436  Penstemon gracilentus Gordon H. True Jr. 1938-7-14 959 Lassen summit on Milford Grade , just on n slope (just on n slope) 1676 Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  UC27451  Penstemon gracilentus M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Pine Creek Comment
  NY600697  Penstemon gracilentus K. A. Vincent 1986-7-19 4382 Lassen Sierra Nevada, Roop Mountain; along CA A1 at Eagle Lake Summit, ca. 7.6 miles north of junction CA 36, ca. 7 air miles northwest of Susanville. 1932.4 Comment
  CHSC60419  Penstemon heterodoxus var. shastensis Mary Ann Showers 1992-6-12 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  SEINET10547576  Penstemon heterodoxus var. shastensis Mary Merello 1993-6-27 Merello 742 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. 1700 Comment
  NY627262  Penstemon neotericus A. A. Heller 1938-6-22 15181 Lassen 1 mile south of Westwood Comment
  NY627256  Penstemon neotericus K. A. Vincent 1987-8-5 4499 Lassen Sierra Nevada, Roop Mountain; along CA A1, ca. 4 miles northwest of jct. CA 36, site ca. 6 air miles west-northwest of Susanville 1737.4 Comment
  RSA257090  Penstemon newberryi Christopher Davidson 1974-7-23 2497 Lassen Lassen Volcanic Nat'l Park. Rd to Juniper Lake. 2134 Comment
  NY627392  Penstemon newberryi var. newberryi R. M. Austin 08 1878 s.n. Lassen Mount Dyer Comment
  CHSC60859  Penstemon roezlii Vernon H. Oswald; Lowell Ahart 1993-6-28 5618 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
  JEPS94531  Penstemon roezlii Vernon Oswald and Lowell Ahart 1997-6-24 8623 .1 Lassen s of Susanville (on n side of Diamond Mountain on Forest Road 21N52 1.0 mi sw of its junction with 29N43); Diamond Mountain, Forest Road 21N52 2164 Comment
  NY641735  Penstemon roezlii K. A. Vincent 1986-6-14 4321 Lassen Upper Long Valley; along east side of US 395, ca. 5.5 miles north of jct. US 70, ca. 13.2 road miles north of Bordertown and Nevada state line 1463.0 Comment
  NY650102  Penstemon roezlii J. T. Howell 1973-8-1 50205 Lassen Headwaters of Baxter Creek, east slope of Diamond Range south of Susanville 2164.1 Comment
  JEPS103216  Penstemon roezlii G. Schoolcraft 1989-7-3 1947 Lassen Diamond Mtns. on Diamond Peak 2346 Comment
  SEINET12326936  Penstemon rydbergii L. E. Ray 1967-1 100 Lassen 8 mi S ELBS, Deans Meadow 1951 Comment
  CHSC107320  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2011-6-20 17502 Lassen Meadow, about 40 yards west of the stream, about 50 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
  CHSC12483  Penstemon rydbergii var. oreocharis Carol Weld 1969-6-20 15 Lassen Dean's Meadow. 1950 Comment
  JEPS6627  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen along Highway #36 one mi e Westwood; e of Westwood 1524 Comment
  NY650948  Penstemon rydbergii var. oreocharis H. D. D. Ripley 1943-6-13 5706 Lassen 8 miles south of Milford 1859.3 Comment
  UC1142926  Penstemon rydbergii var. oreocharis A. L. Hormay 1941-6-25 22 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 Comment
  CHSC12458  Penstemon speciosus Robert W. Severin 1969-6-20 2 Lassen 4 miles s of E. L. B. S. in Dean's Meadow. 1950 Comment
  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
  CHSC98580  Penstemon speciosus B. Castro; L. P. Janeway 2005-7-10 1495 Lassen Northern High Sierra Nevada. Crest of the Diamond Mtns, overlooking Janesville and Honey Lake, 0.15 mi N of Rd 28N01 and 0.4 mi E of its junction with Janesville Grade (Rd 29N01/Rd 208). Knoll on N side of crest, in soft decomposed granite soil among rounded granite boulders. 1859 Comment
  HSC81485  Penstemon speciosus Thomas W. Nelson, Jane Nelson 1980-7-6 6018 Lassen Along Adin-Madeline Rd. 0.5 mi. W of Moll Reservoir. 1585 Comment
  JEPS9349  Penstemon speciosus George W. Gillett July 1953 273 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass (Highway 36) 1752 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
  NY660816  Penstemon speciosus G. Schoolcraft 1990-7-2 2100 Lassen Southwest slopes of Cold Springs Mountain 1890 Comment
  NY661010  Penstemon speciosus L. Constance 1938-6-11 2331 Lassen 3.5 miles north of Secret Valley, Madeline Plains on Susanville-Alturas road 1524.0 Comment
  SBBG26872  Penstemon speciosus D. D. Keck 1930-7-23 50 Lassen Susanville 1280 Comment
  SBBG30645  Penstemon speciosus D. Myrick 1968-6-19 1955 Lassen Hwy 395, 6 mi S of Ravendale 1524 Comment
  UC1142999  Penstemon speciosus August L. Hormay 1934-6-30 Lassen Harvey Valley Lassen National Forest 1615 Comment
  UC1527430  Penstemon speciosus Gordon H. True Jr. 1936-6-25 529 Lassen e Harvey Ranger Station (Harvey Valley); , e of Harvey Ranger Station 1767 Comment
  CDA33279  Penstemon speciosus T. C. Fuller 1963-6-11 10665 Lassen West side of Highway 395 at road to Horse Lake, 1.5 miles south of Ravendale. 0 Comment
  CAS-BOT-BC243406  Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen NE of Shaffer Mtn. 1356 Comment
  CAS-BOT-BC243409  Penstemon sudans David D. Keck 1930-7-23 948 Lassen Susanville 1280 Comment
  CAS-BOT-BC243414  Penstemon sudans John Thomas Howell 1934-6-10 11880 Lassen 12 miles N of Susanville on road to Horse Lake Comment
  CHSC114420  Penstemon sudans Loren Gehrung 2005-7-7 Lassen North side of Highway 36 near Devils Corral at Hidden Valley, about six miles west of Susanville, California. 1432 Comment
  CHSC68885  Penstemon sudans Vernon Oswald; Lowell Ahart 1997-6-24 8599 Lassen South of Susanville on the north side of Diamond Mtn. on Forest Rd. 29N43, 1.2 miles east of Gold Run Rd. (29N10). 1685 Comment
  NY661797  Penstemon sudans G. W. Gillett 1953-7-13 274 Lassen Fredonyer Pass, Highway 36. One mile east of pass. 1706.9 Comment
  NY661806  Penstemon sudans J. T. Howell 1976-7-20 52014 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432.6 Comment
Read comments
Apr 21 2013
  UCD55297  Penstemon sudans Ellen Dean; Gary Schoolcraft 2006-5-16 3118 Lassen East of town of Susanville, along County Road A27 (Center Road). Private land north of California Correctional Facility owned by Virginia Johnston, to be purchased by state for expansion of alfalfa fields. 1283 Comment
  SEINET5323637 Image available Penstemon sudans G. Schoolcraft 1998-7-14 2761 Lassen In rimrock NE of Shaffer Mtn 1356 Comment
  OBI75898  Penstemon venustus Anthony Baniaga and R. Bomberger, R. Bomberger 2011-7-28 479 Lassen Lassen Natl Forest. Along Hwy 36. Fredonyer Pass quad. T29N R10E sec 2 sW of NW 1701 Comment
  CAS-BOT-BC211251  Perideridia Louella Bass 1976-1-1 158 Lassen Elysian Valley 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
  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
  SEINET11153899  Perideridia gairdneri subsp. borealis M. S. Baker July 31 (no year) s.n. Lassen Silver Lake. Comment
  UC20876  Perideridia oregana Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  CAS-BOT-BC423339  Peritoma platycarpa Noel H. Holmgren; Patricia K. Holmgren 1978-6-11 8928 Lassen Upper Smoke Creek, south side of Observation Peak, 7.6 km (4.7 mi) northeast of Rye Patch Canyon summit, 18.5 km (11.5 mi) airline distance east-southeast of Ravendale. 1700 Comment
  OBI48093  Peritoma platycarpa Rhonda Riggins 1989-4-27 1638 Lassen Wash through volcanic boulder pavement, US395, 8.4 mi N. Litchfield, 26.6 mi S Rav endale 1311 Comment
  OBI77201  Persicaria amphibia Anthony Baniaga 2011-7-23 517 Lassen Lassen NF. Poison Lake. Poison Lake quad T32N R7E sec 4 1707 Comment
  JEPS25529  Phacelia adenophora Rimo Bacigalupi with Lincoln Constance 1959-6-16 7143 Lassen US Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside road) 1341 Comment
  RSA38631  Phacelia adenophora P. A. Munz 1947-5-19 11871 Lassen 19 miles south of Ravendale. 1341 Comment
  RSA38635  Phacelia adenophora P. A. Munz 1947-5-19 11881 Lassen Madeline 1677 Comment
  SJSU14070  Phacelia adenophora W. Savage 1964-6-30 337 Lassen by Hwy 89, 11 mi N of Susanville Comment
  UC1088434  Phacelia adenophora Peter H. Raven and Otto T. Solbrig 1958-6-17 13281 Lassen 5.7 mi s Ravendale Comment
  UCD72517  Phacelia adenophora Joe DiTomaso 2008-5-15 s. n. Lassen Modoc Plateau, just inside California (from Nevada) on Smoke Creek Road near Ravendale. Comment
  UC107370  Phacelia bicolor var. bicolor T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  JEPS78146  Phacelia hastata Gary W. Zamzow 1972-7-19 89 Lassen Hwy 139 15 mi s Adin; Willow Creek campground 1524 Comment
  CDA40427  Phacelia hastata subsp. compacta L. Ahart, J. Dittes 2005-6-2 11950 Lassen Along a poor dirt road, about 1 mile northeast of the Anderson Ranch home, Long Valley, about 5 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.7 miles (air) northwest of Hallelujah Junction. Comment
  CHSC29888  Phacelia hastata subsp. hastata Robin L. Ondricek 1978-8-9 121 Lassen 0.1 mi w of intersection with road which passes Colman Lake. 1889 Comment
  CHSC23550  Phacelia humilis W. O. Baum 1971-6-28 23 Lassen E slope of Gallatin Peak. 1981 Comment
  JEPS118501  Phacelia humilis A. Holmen 2011-8-12 CA 320 -92 Lassen US Hwy 395 South to Termo. Turn East onto Lassen Co. Rd 508 (Juniper Ridge Rd). Continue approximately 11 miles to Cold Springs Rd and head north for 3 miles. Turn and travel about 1 mile. Collection site is along road. Comment
  JEPS3192  Phacelia humilis Hilda W. Grinnell 1934-6-1 Lassen 8 mi sw Susanville (top of divide) 1950 Comment
  NY1057842  Phacelia humilis P. A. Munz 1947-5-20 11885 Lassen Laufman Forestry Public Camp above Milford 1524 Comment
  CHSC58500  Phacelia hydrophylloides Vernon H. Oswald 1992-7-3 5060 Lassen Lassen Volcanic National Park. Trail between Juniper and Horseshoe lakes, on the W side of the ridge between the lakes. 2078 Comment
  CHSC71090  Phacelia linearis Vernon H. Oswald; Lowell Ahart 1998-5-22 9106 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
  SFV3020  Phacelia linearis I. L. Wiggins, D. B. Wiggins 1961-6-16 16530 Lassen Big Valley Mountains. South-facing road-cut slope, 0.8 miles west of summit of Big Velley Pass. 1380 Comment
  UCD20363  Phacelia linearis Joe DiTomaso 2002-6-4 s.n. Lassen Lassen County, about 3 miles northwest of the junction between Nevada, Modoc and Lassen counties. Study plots near Susanville. Comment
  HSC13645  Phacelia mutabilis M. T. Milligan 1964-7-16 134 Lassen 2 mi. N on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  NY1056748  Phacelia tetramera A. Tiehm 1986-5-12 10349 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  JEPS79143  Phacelia thermalis L. R. Heckard with R. Bacigalupi 1980-6-11 5245 Lassen along US 395 s Deep Creek crossing (11.3 mi n of Litchfield) 1463 Comment
  SEINET3091880 Image available Phacelia thermalis Arnold Tiehm, Raymond Evans, James Young. 1984-6-7 8595 Lassen Flats on the Northwest side of Shaffer Mountain, 9 air miles North-northwest of Litchfield. 1372 Comment
  RSA299298  Phalaris arundinacea J. T. Howell 1974-7-8 50477 Lassen Susanville 1296 Comment
  UC1037092  Phleum pratense Leo Whitney 1933-7-1 2214 Lassen ca 15 mi w Eagle Lake (Crater Mountain); Lassen National Forest, w of Eagle Lake, Crater Mountain 2225 Comment
  UC1100415  Phleum pratense Herbert L. Mason and Verne Grant 1947-7-9 13303 Lassen 5 mi e Bieber (irrigation ditch) Comment
  UC23928  Phlox austromontana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  JEPS69974  Phlox diffusa Frances D. Payne 1929-7-12 76 Lassen above Lost Lake (se extremity of Warner Mountains); Warner Mountains 2286 Comment
  HSC17176  Phlox longifolia M. L. Stuart 1965-5-2 53 Lassen 35 mi. NE of Susanville Comment
  JEPS29740  Phlox speciosa subsp. occidentalis Rimo Bacigalupi, and L. R. Heckard 1962-5-28 8495 Lassen 2.7 mi n Milford (along U.S. Highway 395) 1219 Comment
  RSA271915  Phlox stansburyi Christopher Davidson 1975-6-7 2750 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS127162  Phoradendron bolleanum Lowell Ahart, John Dittes 2016-7-13 21136 Lassen 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at southern slope of Big Valley. Comment
  PASA1593  Phyllodoce breweri Margaret Stason 1932-6-23 Lassen near mineral Comment
  NY61587  Pinus jeffreyi K. Morris 1973-5-25 219 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
  CDA601  Pinus washoensis Gordon Leppig, Sylvia Leppig and Juli & Kai Neander 1998-8-18 1065 Lassen Modoc National Forest, Blue Lake Campground Comment
  UC1951062  Plagiobothrys Debra Valov 2007-5-22 2007086 Lassen Bieber, ca. 12 km east of Hwy 299 via County Rd A2. Comment
  CAS-BOT-BC227994  Plagiobothrys Ella Dales Cantelow 1941-5-22 3474 Lassen 5 miles W of Susanville, State Highway 36 Comment
  CHSC106079  Plagiobothrys cusickii Lowell Ahart; John Dittes 2010-7-31 17014 Lassen About 2,300 feet north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1510 Comment
  CHSC58837  Plagiobothrys cusickii Vernon H. Oswald; Lowell Ahart 1992-7-16 5113 Lassen Bridge Creek entering McCoy Flat Reservoir on the S side of Hwy. 44 between Old Station and Susanville. 1691 Comment
  JEPS107314  Plagiobothrys cusickii Lowell Ahart, John Dittes 2005-6-1 11906 Lassen Depression 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
  JEPS87184  Plagiobothrys cusickii Vernon H. Oswald and Lowell Ahart 1992-7-16 5113 Lassen between Old Station and Susanville (Bridge Creek entering McCoy Flat Reservoir on s. side of Hwy. 44); Bridge Creek 1691 Comment
  SBBG128883  Plagiobothrys cusickii L. Ahart, J. Dittes 2008-6-20 14914 Lassen vernal pool, ca. 100 yards SW of where the levee rd crosses Big Valley Canal, in Big Valley, ca. 4 mi (air) NE of the Headquarters at Ash Crk State Wildlife Area, ca. 7 mi (air) NE of Bieber 1263 Comment
  CAS-BOT-BC224974  Plagiobothrys hispidulus John Thomas Howell; Gordon H. True 1973-8-1 50212 Lassen Headwaters of Baxter Creek, E slope of Diamond Range S of Susanville 2164 Comment
  CHSC112431  Plagiobothrys hispidulus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18776 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121293  Plagiobothrys hispidulus Lowell Ahart 2013-7-22 18854 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
  UC1025083  Plagiobothrys hispidulus Leo Whitney 1933-8-14 2002 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  CAS-BOT-BC224970  Plagiobothrys hispidulus David D. Keck; J. Clausen 1935-6-25 3764 Lassen 2 miles W of Fredonyer Pass, between Susanville and Westwood 1525 Comment
  UC1561381  Plagiobothrys hispidus Barbara Ertter with Gary Schoolcraft 1987-6-16 7190 Lassen on s side Hot Springs VABM (on ne side of Honey Lake); Skeedaddle Mountains, Honey Lake 2286 Comment
  UC1584021  Plagiobothrys kingii var. harknessii G. Schoolcraft 1990-6-12 2088 Lassen about 17 mi e Ravendale; Pine Dunes RNA 1706 Comment
  UC1560401  Plagiobothrys mollis E. Joyal and D. Mehlman 1988-6-27 1286 Lassen Poison Lake 2000 Comment
  RSA39738  Plagiobothrys scouleri var. hispidulus P. A. Munz 1947-5-20 11891 Lassen Milford. 1265 Comment
  CHSC112445  Plagiobothrys stipitatus var. micranthus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18771 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  UC101433  Plagiobothrys tenellus Marcus E. Jones, A. M. 1897-6-18 7141 Lassen Chat 1524 Comment
  RSA60317  Plagiobothrys tenellus E. K. Balls 1950-5-9 15950 Lassen 12 miles north of Doyle, Hwy 395. 1296 Comment
  SJSU9125  Platanthera dilatata var. leucostachys H. L. Buckalew 1961-7-2 Lassen Blue Lake near Blue Lake Road Comment
  CHSC12462  Platanthera leucostachys Robert W. Severin 1969-6-26 21 Lassen 7.2 mi along road from E. L. B. S. to Galatin Beach. 3 mi. s of E. L. B. S. 1645 Comment
  UC1037205  Platanthera leucostachys Leo Whitney 1933-8-8 1562 Lassen ca 8 mi nw Eagle Lake (spring at bed of Slate Creek); Lassen National Forest, Slate Creek 1920 Comment
  POM253046  Platanthera leucostachys A. A. Heller 1938-7-28 15298 Lassen About a mile east of Westwood 1524 Comment
  CHSC4905  Plectritis macrocera Bill Wilson 1967-6-23 17 Lassen Collected at Eagle Lake Biological Station, 10 mi. N of Susanville, outside laboratory building. 1584 Comment
  CAS-BOT-BC326713  Pleiacanthus spinosus Gordon H. True 1973-8-22 7658 Lassen North shore of Honey Lake ca. 5 miles east of Janesville and just west of Hartson Reservoir Comment
  CAS-BOT-BC326718  Pleiacanthus spinosus John Thomas Howell 1974-7-8 50493 Lassen Between Camp Connell and Camp Menzies, Sierra Nevada 1295 Comment
  CHSC31979  Pleiacanthus spinosus L. Ahart 1974-7-9 547 Lassen Along Hwy 395, 1 mi n of jct of Hwys 395 and 70. 1524 Comment
  UC768477  Pleiacanthus spinosus Robert F. Hoover 1940-9-28 4630 Lassen Susanville Comment
  CAS-BOT-BC255673  Poa bolanderi John Thomas Howell; Gordon H. True 1973-8-1 50233 Lassen E slope of Diamond Range S of Susanville 2133 Comment
  RSA295427  Poa bulbosa J. R. Reeder, C. G. Reeder 1981-5-20 7349 Lassen 3.5 km NNW of Janesville. Transition above Long Valley. 1250 Comment
  UC1100399  Poa bulbosa Herbert L. Mason, Malcolm A. Nobs, and S. Galen Smith 1949-5-29 758 Lassen on Great Northern RR, Hwy 299 <Nubeiber> 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
  UC1024814  Poa cusickii subsp. cusickii Leo Whitney 1935-6-19 3265 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  JEPS118453  Poa cusickii subsp. epilis Lowell Ahart, John Dittes 2011-6-20 17507 Lassen Meadow about 40 yards east of the stream, about 100 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  SEINET10524396  Poa fendleriana Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 883 Lassen Collected 3 mi N of Milford, Calif. on Hwy 395 at Honey Lake campgrounds. Comment
  UC1583964  Poa fendleriana subsp. longiligula G. Schoolcraft 1990-5-16 2054 Lassen ca 1 mi w Muck Valley 1280 Comment
  CAS-BOT-BC247320  Poa pratensis Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16337 -A Lassen 13.5 mi. E. of Susanville Comment
  JEPS107465  Poa pratensis subsp. pratensis Lowell Ahart, John Dittes 2005-6-1 11848 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
  UCR244104  Poa pratensis subsp. pratensis Jim Andre, G. L. Clifton 1993-6-9 19698 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley, c. 5 mi. west of Doyle (at U.S. 395), just inside Plumas NF boundary 1631 Comment
  JEPS127638  Poa secunda Alejandro Brambila, Michael Dolan 2016-6-22 CA 320 -150 Lassen Ash Valley road going west before Holbrook Reservoir. Comment
  POM180946  Poa secunda P. B. Kennedy 1901-6-10 s.n. Lassen R.R. Station, Constantia. Comment
Read comments
Jan 6 2015
  POM203054  Poa secunda J. T. Howell 1934-7-6 12459 Lassen Harvey Valley Comment
  POM267991  Poa secunda D. D. Keck 1944-7-8 5449 Lassen 1.5 mi W. of Susanville, on rim of plateau overlooking Susan River canyon 1341 Comment
  UCR119165  Poa secunda Beecher Crampton 1954-7-5 2057 Lassen Modoc Plateau, 4.5 miles west of Susanville, along state highway 36 1433 Comment
  CAS-BOT-BC247052  Poa secunda subsp. juncifolia Ralph K. Gierisch 1968-7-11 3352 Lassen Lassen National Forest, Harvey Valley - Dixie Spr. 1706 Comment
  UC1132872  Poa secunda subsp. juncifolia A. Simontacchi 1940-5-13 704 Lassen 2.2 mi n of B. M. 6680 on Cone Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1137292  Poa secunda subsp. juncifolia K. E. Bradshaw 1939-5-27 236 Lassen Plot 39-1 Black Mt Experimental Forest; Lassen Nat'l Forest, Halls Flat Quadrangle 1752 Comment
  UC718010  Poa secunda subsp. juncifolia David D. Keck 1944-7-8 5449 Lassen 1.5 mi w Susanville (rim of plateau overlooking Susan River canyon); Sierra Nevada 1341 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
  CAS-BOT-BC236183  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49197 Lassen Elysian Valley NW of Janesville 1325 Comment
  UC1024681  Poa secunda subsp. secunda Leo Whitney 1934-7-10 2165 Lassen ca 14 mi w Eagle Lake (near Harvey Spring); Lassen Nat'l Forest, Harvey Valley 1737 Comment
  UC1024836  Poa secunda subsp. secunda Leo Whitney 1935-6-10 3220 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  UC1132871  Poa secunda subsp. secunda A. Simontacchi 1940-5-28 784 Lassen 3.2 mi wsw Patterson Mt; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1132881  Poa secunda subsp. secunda A. Simontacchi 1940-5-14 719 Lassen 10.2 mi e Coyote Spring; Lassen Nat'l Forest, Halls Flat Quadrangle Comment
  UC1567404  Poa secunda subsp. secunda G. Schoolcraft 1989-7-18 1975 Lassen near Buck's Spring (s of Clark's Valley Rd) 1874 Comment
  UC70959  Poa secunda subsp. secunda J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Comment
  UCD92016  Poa secunda subsp. secunda A. H. Shunk 1923-1 14 Lassen Hayden Hill. Comment
  UCD91756  Poa wheeleri L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp 10. Comment
  UC907836  Polemonium micranthum John Chattin, Dan Tillotson 1947-5-1 1 Lassen Bieber Comment
  CAS-BOT-BC74163  Polyctenium fremontii G. Schoolcraft 1998-5-19 2707 Lassen South end Mud Flat. 1341 Comment
  CHSC117761  Polygala subspinosa Virginia Dains; Joanne Crawford 2016-6-14 Lassen Modoc Plateau. BLM Eagle Lake Field Office. 20 km northeast of Skedaddle Mtns, 11 km east of Highway 395, 1.5 km north of Smoke Creek Ranch Road. 1432 Comment
  UC1101132  Polygonum amphibium var. stipulaceum Verne Grant and Irving Schneider 1947-9-5 8369 Lassen by Sam Webb's Place (Spaulding) (nw shore of lake); Eagle Lake Comment
  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
  CHSC110777  Polygonum aviculare subsp. buxiforme Dean Wm. Taylor 2012-7-18 21280 Lassen Cascade Ranges. Windmill Flat (tributary Juniper Creek, Pit River watershed, 11 miles S of Adin). 1706 Comment
  UC1136194  Polygonum bistortoides Robert W. Gardner 1937-6-20 G- 20 Lassen Burgess Spring Halls Flat Quadrangle Comment
  CAS-BOT-BC414489  Polygonum douglasii Clare B. Hardham 1969-8-28 17432 A Lassen West of Janesville Comment
  UC773925  Polygonum douglasii subsp. douglasii L. R. Short and J. Warren July, 1936 S- 420 Lassen Burgess Spring Experiment Range 1856 Comment
  UC1567355  Polygonum douglasii subsp. majus G. Schoolcraft 1989-6-19 1919 Lassen Ash Valley RNA/ACEC 1554 Comment
  UC850047  Polygonum douglasii subsp. spergulariiforme M. S. Baker and F. Nutting 1894-1 Lassen Lassen Co. Comment
  HSC30028  Polygonum minimum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19271 Lassen Harvey Valley near Cone Springs Comment
  JEPS28705  Polygonum minimum George W. Gillett 1957-7-28 931 Lassen draw 1 mi above Butte Lake (on Widow Lake Trail); Lassen Volcanic National Park 1905 Comment
  SD7880  Polygonum minimum Mrs. R. M. Austin none given Lassen Lassen Co. Comment
  UC1603211  Polygonum polygaloides J. Guardino 1993-6-8 261 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  UC1603212  Polygonum polygaloides J. Guardino 1993-5-22 171 Lassen near Wayman Barn (at the w end of Hunt Road, Ash Creek Wildlife Area); Ash Creek Wildlife Area, Hunt Road 1264 Comment
  CAS-BOT-BC419860  Polygonum polygaloides subsp. confertiflorum Malcom A. Nobs; S. Galen Smith; Herbert L. Mason 1949-5-29 757 Lassen On Great Northern Railroad, Highway 299, Nubeiber Comment
  CHSC112396  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18732 Lassen Drainage filled with dirt form construction of a pond, about 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC113013  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2013-7-23 18905 Lassen On the northwest side of a man made pond, about 160 yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC117228  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2018-7-15 21235 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieger. 1397 Comment
  CHSC99126  Polygonum polygaloides subsp. confertiflorum Lowell Ahart; John Dittes 2008-6-22 15038 Lassen About 220 yards northwest of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber. 1262 Comment
  CAS-BOT-BC419910  Polygonum polygaloides subsp. kelloggii George W. Gillett 1957-7-28 939 Lassen Lassen Volcanic National Park. Widow Lake. 2072 Comment
  UC1060646  Polygonum polygaloides subsp. kelloggii Herbert L. Mason 1957-7-5 14712 Lassen between Madeline and summit of grade; Madeline Plains Comment
  UC773864  Polygonum polygaloides subsp. kelloggii L. R. Short and Wm. Gansberg 1936-6-8 S- 390 Lassen Burgess Spring Experimental Range Lassen <National> Forest 1743 Comment
  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
  CDA22787  Polygonum spergulariiforme L. Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, about 1/4 mile southwest of the Susan River, about 8 miles (air) southwest of Susanville. Comment
  CHSC110900  Polypogon monspeliensis Lowell Ahart; John Dittes 2012-7-9 18300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  JEPS107817  Polypogon monspeliensis Lowell Ahart, John Dittes 2005-6-2 11967 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1408 Comment
  UC1100382  Polypogon monspeliensis Malcolm A. Nobs and S. Galen Smith 1949-7-20 1052 Lassen four mi w Adin Comment
Read comments
Jun 24 2009
  UCR7792  Polypogon monspeliensis Marilyn Malin 1968-7-11 259 Lassen West side of Hwy 395 on west side of Honey Lake 1280 Comment
  CHSC12480  Populus tremuloides Carol Weld 1969-6-25 21 Lassen Murrer's Meadow. 1524 Comment
  CHSC99731  Porterella carnosula Lowell Ahart; John Dittes 2008-6-20 14963 Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  SEINET10460830  Porterella carnosula Noel H. Holmgren, Patricia K. Holmgren 1978-6-10 Holmgren 8901 Lassen Madeline Plains, Coyote Flat, 14.5 km (9 mi) east-northeast of Termo and 13 km (8 mi) airline distance. T35N R15ES7 1630 Comment
  CHSC4837  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CHSC4838  Potamogeton R. Carter 1967-7-13 595 Lassen Ca. 5 mi e of Eagle Lake Biology Station at point where rd comes nearest to Willow Creek. 1560 Comment
  CAS-BOT-BC452093  Potamogeton amplifolius Verne Grant; Irving Schneider 1947-8-24 8269 Lassen Northwest shore of Blue Lake, Northern Lassen County. Comment
  RSA772321  Potamogeton diversifolius Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47201 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 Comment
  HSC95292  Potamogeton foliosus Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 692 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  JEPS103226  Potamogeton nodosus G. Schoolcraft 1996-9-11 2563 Lassen Willow Creek below petroglyphs above dam 1341 Comment
  UC1099819  Potamogeton pectinatus Malcolm A. Nobs, S. Galen Smith 1949-8-20 1491 Lassen 1 mi s Doyle; Long Creek Comment
  RSA772322  Potamogeton richardsonii Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line 1616 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
  POM172482  Potentilla fruticosa Franklin Nutting 1894-7-28 s.n. Lassen Bridge Creek Comment
  CHSC27741  Potentilla glandulosa subsp. ashlandica Cindy Prouty 1978-7-5 3 Lassen E shore of Mahogany L., S of Eagle L. Meadow. 2060 Comment
  CHSC27742  Potentilla glandulosa subsp. ashlandica N. E. Heiken 1978-7-5 76 Lassen S of Eagle L., E shore of Mahogany L. 2060 Comment
  CAS-BOT-BC540365  Potentilla gracilis var. fastigiata Louella Bass 1973-5-29 49 Lassen Elysian Valley 1325 Comment
  HSC18787  Potentilla gracilis var. fastigiata Jim Vaughn 1956-8-25 Lassen Drakesbad, Mt. Lassen National Park 1738 Comment
  UC1136994  Potentilla millefolia George A. Fischer, Irwin H. Johnson 1933-7-14 F 240 Lassen Patterson R. S. Lassen National Forest, Patterson R. S. 1737 Comment
  CAS-BOT-BC158516  Potentilla millefolia 1927-6-10 7 Lassen Lassen National Forest, Norval Flat 1747 Comment
  CAS-BOT-BC159776  Prunus andersonii Ella Dales Cantelow 1938-10-23 2192 Lassen N. of Doyle, Honey Lake in view Comment
  SEINET3157217  Prunus andersonii E. K. Balls 1950-5-9 15947 Lassen 6 mi S of Doyle, hwy 395 1372 Comment
  SEINET10542398  Prunus andersonii Paul Gallian, David B. Dunn 1971-6-2 Gallian 461 Lassen 6 miles n of hallelujah junction on us hwy 395, in artemisa tridentata, pinyon Pine, jeffrey pine along high ridge and in sandy wash 1402 Comment
  HSC63042  Prunus subcordata J. P. Smith, J. O. Sawyer 1971-5-23 4662 Lassen Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo Comment
  CAS-BOT-BC154771  Prunus virginiana var. demissa L. B. Barlow 1967-7-1 63 Lassen 5 mi. north of Eagle Lake Marina, west central shore Eagle Lake, Eagle Lake Road 1554 Comment
  CAS-BOT-BC154773  Prunus virginiana var. demissa John Thomas Howell 1974-7-8 50494 Lassen Susanville 1295 Comment
  CAS-BOT-BC383104  Prunus virginiana var. demissa Andrew Townesmith; Karen M. Meyer 2007-7-20 835 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  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
  HSC25730  Prunus virginiana var. demissa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19164 Lassen 3 mi. N of Westwood Comment
  UC2013400  Prunus virginiana var. demissa Debra Valov 2011-6-16 1105 Lassen Bieber; off County A2 c. 8 km east of Highway 299. Comment
  CHSC13511  Pseudognaphalium thermale J. Pitts 1972-6-29 293 Lassen 3 mi se of Five Points on e side of road. Comment
  CAS-BOT-BC239796  Pseudoroegneria spicata Marcus E. Jones 1897-6-25 s.n. Lassen Susanville 1341 Comment
  CAS-BOT-BC239799  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51998 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC239800  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51997 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC239804  Pseudoroegneria spicata David D. Keck 1944-7-8 5450 Lassen 1.5 mi. W. of Susanville on rim of plateau overlooking Susan River Canyon 1341 Comment
  UCD91489  Pseudoroegneria spicata A. A. Beetle 1944-8-16 3016 Lassen 3 miles south of Horse Lake. Comment
  CHSC66421  Pseudoroegneria spicata subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7791 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. At trailside just SE of the Hwy. 36 bridge spanning the Susan River. 1402 Comment
  POM267992  Pseudoroegneria spicata subsp. spicata D. D. Keck 1944-7-9 5450 Lassen 1.5 miles W. of Susanville on rim of plateu overlooking Susan River Canyon 1341 Comment
  JEPS94550  Pseudostellaria jamesiana Vernon Oswald and Lowell Ahart 1997-6-24 8619 Lassen 2.7 mi e of boundary of Lassen National Forest (7.4 mi e of God Run Road (29N10), s of Susanville on n side of Diamond Mountain at an impoundment of the edge of Forest Road 29N43); Diamond Mountain, Forest Road 29N43 2036 Comment
  SEINET5345381  Pseudotsuga menziesii var. menziesii D. A. Charlet 1996-7-8 2290 Lassen Diamond Mts; Sierra Nevada Janesville Grade, just within National Forest boundary, Great Basin drainage (Honey Lake) 1855 Comment
  SEINET5345383  Pseudotsuga menziesii var. menziesii D. A. Charlet 1996-7-8 2286 Lassen Diamond Mountains, Sierra NV, Great Basin drainage (Honey Lake); East Canyon (Milford Grade); at Laufman Campground 1620 Comment
  JEPS119651  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes 2012-7-9 18290 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS120861  Psilocarphus brevissimus var. brevissimus Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18756 Lassen About 30 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS124658 Image available Psilocarphus brevissimus var. brevissimus M. L. Wheelis 1964-7-1 132 Lassen Highway 139, 12 mi. north of Susanville. Comment
  JEPS109942  Psoralidium lanceolatum Dean W. Taylor 2004-5-11 19063 Lassen Calneva Lake; southern end of the lakebed. 1219 Comment
  NY702518  Psoralidium lanceolatum H. D. D. Ripley 1944-5-29 5952 Lassen North of Doyle 1341 Comment
  JEPS117492  Pterospora andromedea Lowell Ahart, John Dittes 2010-7-31 17007 Lassen On the sout side of the road, about 50 yards east of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1516 Comment
  CAS-BOT-BC460510  Pterospora andromedea A. A. Heller 1938-7-28 15302 Lassen About a mile E of Westwood 1524 Comment
  CDA38860  Pterospora andromedea H. Wilkerson & W. F. Cruickshank Sep 1964 s.n. Lassen Hayden Hill. 0 Comment
  HSC68918  Pterospora andromedea Gary Schoolcraft 1980-7-28 339 Lassen N of Clark's Valley 2073 Comment
  CHSC109221  Purshia tridentata B. Castro; L. P. Janeway 2003-10-5 1460 Lassen High Cascade Range. Caribou Wilderness Area; ca 3 mi SW of Bogard Buttes and 1 mi E of Black Butte, along trail betweenCone Lake and Triange Lade, ca 0.8 mi S of Cone Lake and end of USFS Rd 32N09A. 2103 Comment
  SEINET3394464  Purshia tridentata E. D. McArthur 1982-1 EDM- 1356 Lassen NW of Janesville at Jct of crossroads 205 & 219 Comment
  HSC19580  Purshia tridentata var. tridentata Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  JEPS95171  Purshia tridentata var. tridentata Vernon H. Oswald and Lowell Ahart 1996-6-17 7769 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Highway 36, along the trail on n side of Highway 36 0.2 mi e of 7 Mile Post); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  RSA0084312  Pyrola dentata Diana D. Jolles, Erik M. Beaston 2011-7-5 441 Lassen Lassen National Forest near area where Susan River flows through Clover Valley. Thinning unit near intersection of A-21 road and Silver Lake Road some miles south of Highway 44. 1784 Comment
  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
  RSA0084884  Pyrola picta Christopher Davidson 1974-7-24 2485 Lassen Ca. 4 mi W of Janesville on rd to Antelope Valley. 2134 Comment
  CAS-BOT-BC362266  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  POM39972  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  UCD135326  Pyrrocoma hirta Ratliff 1966-7-5 4 Lassen Harvey Valley Allot. - Plot 71. Comment
  CHSC58834  Pyrrocoma hirta var. lanulosa Vernon H. Oswald; Lowell Ahart 1992-7-16 5129 Lassen Feather Lake on the S side of Bridge Creek Spring Rd. (County Rd. 112, Forest Rd. 31N06), ca. 0.4 mi E of Champs Flat Rd. (County Rd. 105, Forest Rd. 32N02), between Old Station and Susanville. On the margin of the lake. 1749 Comment
  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
  CAS-BOT-BC362273  Pyrrocoma lanceolata var. lanceolata James Jokerst 1983-7-24 1881 Lassen Near Madeline Plains 1614 Comment
  CAS-BOT-BC94255  Quercus garryana Alice Eastwood; John Thomas Howell 1940-6-11 7966 Lassen Eastern Fall River Valley Comment
  JEPS41362  Quercus garryana James Griffin 1964-8-4 1272 Lassen along county road from Little Valley to Dixie Valley 1341 Comment
  CHSC91189  Quercus kelloggii Lowell Ahart; John Dittes 2005-6-2 11942 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  CHSC7774  Ranunculus Beverley J. Wise 1969-5-18 147 Lassen Gallatin Creek, 1/4 to 1/2 mi. upstream (south) from Eagle Lake. 1554 Comment
  CAS-BOT-BC379415  Ranunculus alismifolius var. alismellus George W. Gillett 1957-7-21 869 Lassen Juniper Lake-Cameron Meadow trail; wet meadow 300 yards north of trail summit 2118 Comment
  CHSC7729  Ranunculus alismifolius var. lemmonii Beverley J. Wise 1969-3-4 86 Lassen 7 mi. north of Susanville on Hwy 139 (Willow Creek Valley). 1524 Comment
  CDA24294  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  HSC95301  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC91192  Ranunculus aquatilis var. aquatilis Lowell Ahart; John Dittes 2005-6-1 11904 Lassen Bottom of a depression, 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
  UC1594639  Ranunculus aquatilis var. capillaceus Vernon H. Oswald and Lowell Ahart 1992-7-16 5121 Lassen w Cinder Pit (on logging road paralleling e side of creek, 1.3 mi n of Hwy 44 and McCoy Flat Reservoir, btween Old Station and Susanville); Bridge Creek 1719 Comment
  RSA0011456  Ranunculus aquatilis var. capillaceus Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46981 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC66258  Ranunculus aquatilis var. diffusus Vernon H. Oswald; Lowell Ahart 1996-6-24 7877 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. In Papoose Creek where it leaves the N end of the meadow. 1633 Comment
  CHSC6246  Ranunculus canus W. Vinyard 1946-6-13 Lassen Pine Creek, Eagle Lake. 60 Comment
  CHSC75526  Ranunculus cymbalaria var. saximontanus Vernon H. Oswald; Lowell Ahart 1999-6-9 9757 Lassen Northeast of Susanville and 4.1 mi south of Biscar Wildlife Management Area on BLM 26030 at the water crossing on Secret Creek. 1347 Comment
  UC9426  Ranunculus cymbalaria var. saximontanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3370 Lassen Honey Lake Valley Comment
  UC9428  Ranunculus cymbalaria var. saximontanus J. Burtt Davy Jun 17 1897-Jun 24 1897 3332 Lassen Honey Lake Valley 1219 Comment
  UC1776661  Ranunculus glaberrimus var. ellipticus G. Schoolcraft 1995-3-1 2463 Lassen East end of Elysian Valley W. of Janesville 1310 Comment
  SEINET10535979  Ranunculus occidentalis Mary Merello 1993-6-28 Merello 749 Lassen Lassen National Forest, Poison Lake. Along Hwy. 44 just south of the Hwy. 89, Hwy. 44 intersection. Open pine-scrub and wetlands around lake. Volcanic soils. 1700 Comment
  UC1126216  Ranunculus occidentalis A. Simontacchi 1940-6-13 850 Lassen 3.3 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1137287  Ranunculus occidentalis K. E. Bradshaw 1939-5-27 242 Lassen near S. end of Black Mountain Experimental Forest Plot 39-4; Lassen National Forest, Halls Flat Quadrangle 1737 Comment
  UC1584003  Ranunculus occidentalis G. Schoolcraft 1990-5-15 2050 Lassen about 4 mi s Nubieber; John's Valley 1310 Comment
  CDA24358  Ranunculus testiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 C Lassen Wendel. 0 Comment
  CHSC91184  Ranunculus testiculatus Lowell Ahart; John Dittes 2005-6-1 11911 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
  UC1364997  Ratibida columnifera Nick Santamaria 1969-7-21 721 Lassen on service road #33NO1 two mi n Eagle Lake Resort (w side of lake); Eagle Lake 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
  RSA747549  Rhamnus rubra K. M. Meyer, A. Townesmith 2007-7-23 156 Lassen Lassen National Forest. 5.6 miles SW on 32N10 off Hwy 44. (Turn at rest area). 1980 Comment
  CAS-BOT-BC93392  Ribes cereum Milo S. Baker 1894-6-1 s.n. Lassen South side Dixey Mountains. Comment
  CHSC21360  Ribes cereum M. S. Taylor 1974-5-4 219 Lassen Scattered ca. 1/4 mi n of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  JEPS28678  Ribes cereum George W. Gillett 1957-7-26 916 Lassen e shore Butte Lake; Lassen Volcanic National Park 1844 Comment
  CAS-BOT-BC212579  Ribes montigenum Alice Eastwood 1912-8-22 1863 Lassen Trail from Morgan Springs to Lassen Butte Comment
  CAS-BOT-BC212656  Ribes nevadense A. A. Heller 1938-6-4 15145 Lassen 1 mile E of Fredonyer Pass Comment
  CDA25586  Ribes velutinum J. R. Keck Jr. 1977-8-1 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  JEPS49259  Ribes velutinum Jos. Grinnell 1928-6-18 Lassen n end Eagle Lake 1584 Comment
  CDA8540  Rigiopappus leptocladus T. C. Fuller 1963-6-1 10624 Lassen Road to Susanville, 2.2 miles south of Pittville. 0 Comment
  OBI48617  Rigiopappus leptocladus Lewis S. Rose 1940-6-11 40507 Lassen 8 mi W of Nubieber 1219 Comment
  UC1126739  Rorippa curvisiliqua A. Simontacchi 1940-6-4 806 Lassen 14.8 mi w Harvey Mountain Lookout; Halls Flat Quad., Lassen National Forest Comment
  CHSC5023  Rorippa nasturtium-aquaticum L. G. Bennett 1967-6-24 45 Lassen Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC5239  Rorippa nasturtium-aquaticum P. Balch 1955-7-10 Lassen Eagle Lake. Willow Creek Reservoir. 1463 Comment
  CAS-BOT-BC74856  Rorippa sinuata Verne Grant; Irving Schneider 1947-8-1 8226 Lassen Irrigation ditch running southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1567407  Rorippa sinuata G. Schoolcraft 1989-6-6 1901 Lassen n end Secret Valley w Highway 395; n end Secret Valley 1350 Comment
  CHSC89759  Rosa californica 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
  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
  CHSC99109  Rosa woodsii subsp. ultramontana Lowell Ahart; John Dittes 2008-6-20 14972 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  CAS-BOT-BC148259  Rosa woodsii var. ultramontana John Thomas Howell 1974-7-8 50492 Lassen Susanville - Sierra Nevada 1295 Comment
  JEPS45635  Rosa woodsii var. ultramontana W. L. Jepson 1918-8-2 7782 Lassen 1 mi below Boni Ranch (lower bench of creek); Long Valley Creek 1371 Comment
  JEPS88554  Rosa woodsii var. ultramontana Vernon H. Oswald and Lowell Ahart 1996-6-17 7773 Lassen 7 mi w of Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off Highway 36, edge of trail at bridge spanning the Susan River on n side of Hwy 36); Modoc Plateau, Bizz Johnson Trail 1432 Comment
  CAS-BOT-BC421956  Rumex acetosella John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49507 Lassen Elysian Valley, west of Janesville 1325 Comment
  CHSC117299  Rumex crispus Lowell Ahart; John Dittes 2016-7-13 21134 Lassen Along the west edge of the pond, 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC433244  Rumex crispus Margaret Williams 1974-7-27 74 -L-64 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  UC465818  Rumex occidentalis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amadee Honey Lake Valley Comment
  CDA23194  Rumex salicifolius T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20384 Lassen West end of the dam of Smoke Creek Reservoir. 0 Comment
  CHSC112393  Rumex salicifolius Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18774 Lassen 300 - 400 or more or less yards northwest of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC67689  Rumex salicifolius var. lacustris James D. Jokerst 1983-7-25 1891 Lassen Madeline Plains W of Termo. Comment
  UC6973  Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  UC452556  Rumex salicifolius var. salicifolius Milo S. Baker Lassen n side Dixie Mt. Comment
  UC6962  Rumex salicifolius var. salicifolius M. S. Baker and F. Nutting 1894-7-1 Lassen Dixie Mts. Comment
  CDA23213  Rumex salicifolius var. triangulivalvis T. C. Fuller 1959-7-7 Lassen Highway 395, 11 miles south of Ravendale. 0 Comment
  RSA0105590  Rumex stenophyllus Lowell Ahart, John Dittes 2013-7-22 18866 Lassen North margin of road levee, about 100 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC434262  Rumex triangulivalvis John Thomas Howell 1934-7-8 12486 Lassen Spalding's, Eagle Lake Comment
  CAS-BOT-BC445671  Sagittaria cuneata L. S. Smith 1918-7-22 1009 Lassen Modoc National Forest. Blue Lake 1874 Comment
  CHSC12427  Sagittaria cuneata Robert W. Severin 1969-6-25 17 Lassen East side of Murrer's Upper Meadow, in irrigation ditch, 2 miles ese from E.L.B.S. 1584 Comment
  CAS-BOT-BC332741  Sagittaria cuneata R. F. Thorne; Larry E. DeBuhr 1975-8-22 46992 Lassen Along Hwy 395 ca 5 miles N of Medeline and 5.5 miles S of Modoc county line 1615 Comment
  CAS-BOT-BC445673  Sagittaria cuneata George W. Gillett 1957-7-28 918 Lassen Lassen Volcanic National Park. Butte Lake 1844 Comment
  JEPS124719 Image available Sagittaria cuneata Rechen 1964-6-30 87 Lassen 1 mile west of junction of hwy 299 and Lassen AZ on 299. Comment
  UCD138009  Sagittaria cuneata Calvin McMillan; Malcom A. Nobs 1949-6-17 799 Lassen Grass Lake, Highway 97. Comment
  UCD110753  Salix boothii T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volc. Nat'l Park. 2225 Comment
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Jul 11 2013
  CHSC65120  Salix eastwoodiae Vernon H. Oswald; Lowell Ahart 1995-7-24 7140 Lassen Along Pine Creek on the upstream side of Forest Road 31N25, at the NW corner of Upper Stephens Mdws., ca. 3 mi NNE of Silver Lake, N of Lake Almanor. 1905 Comment
  CHSC106585  Salix exigua C. Dow; D. Garrison 2008-5-3 Lassen Fort Sage Mtns. OHV Trailhead and Trail to Indian Springs. 1439 Comment
  CHSC66403  Salix exigua Vernon H. Oswald; Lowell Ahart 1996-6-17 7784 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville. 1432 Comment
  CHSC91187  Salix exigua Lowell Ahart; John Dittes 2005-6-1 11905 Lassen On the north side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  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
  CHSC93555  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
  JEPS107798  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-BC128170  Salix lasiandra var. lasiandra John Thomas Howell; Gordon H. True 1973-8-1 50149 Lassen Transition Zone forest in areas of granitic rock, Gold Run Creek road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  CAS-BOT-BC128174  Salix lasiandra var. lasiandra Mrs. E. C. Sutliffe 1927-6-1 s.n. Lassen Drakesbad - Lassen Volcanic park Comment
  SEINET10682438  Salix lasiolepis Karen M. Meyer, Andrew Townesmith 2007-7-19 Meyer 138 Lassen Lassen National Forest. Ca. 0.2 mi. on 29N03, off Hwy. 36 on pullout just past a dry creek. 1459 Comment
  CAS-BOT-BC124637  Salix lemmonii M. B. Kildale 1926-9-11 2788 Lassen Susanville 1524 Comment
  POM209555  Salix lemmonii Carleton R. Ball, Emily Smith, H. P. Bracelin 1932-7-24 684 Lassen Mt. Lassen Hwy. 0.6 mile N of Sulfur Works Checking Station. Lassen Volcanic National Park. 2043 Comment
  UC1776696  Salix lemmonii G. Schoolcraft 1994-8-3 2425 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  SEINET11987291  Salix lutea J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4121 Lassen Willow Creek Campground on road between adin and Said Valley Reservoir Comment
  CAS-BOT-BC126174  Salix scouleriana Hans Leschke 1964-9-3 1891 Lassen Cinder Cone, Lassen Volcanic Nat. Park Comment
  UCR67403  Salsola gobicola George K. Helmkamp 1990-9-23 B- 16 -90 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CDA36352  Salsola gobicola B. Villegas 2011-8-25 Lassen Near Wendel; on Wendel Rd., 0.4 mile from Amadee Rd. 0 Comment
  CHSC71874  Salsola tragus Vernon H. Oswald; Lowell Ahart 1998-9-8 9582 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). 1258 Comment
  JEPS95904  Salsola tragus Lowell Ahart and Vernon H. Oswald 1999-9-13 8205 Lassen on the east side of the dirt road and 1/2 mile south of the sign in station; Honey Lake Wildlife Area; 4 1/2 miles (air) southeast of Standish 1207 Comment
  UC1037333  Salsola tragus Leo Whitney 1934-9-1 1957 Lassen Fredonyer Pass Lassen Nat'l Forest, Fredonyer Pass 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
  SEINET13947383 Image available Salvia dorrii Arthur Cronquist, Arthur H. Holmgren 1959-1 8462 Lassen 50 mi SE of Susanville Comment
  JEPS93816  Salvia dorrii var. dorrii Vernon H. Oswald and Lowell Ahart 1998-6-4 9145 Lassen s of Constantia (spur road on n side of Red Rock Road 0.6 mi e of Highway 395); Red Rock Road 1389 Comment
  SEINET8018246  Salvia dorrii var. pilosa J. A. Young 1982-6-7 s.n. Lassen NE Lassen County, Redlands. 1676 Comment
  CHSC23496  Sambucus mexicana Wayne O. Baum 1971-7-6 71 -74 Lassen Basalt outcrop. . 2042 Comment
  CAS-BOT-BC238591  Sambucus nigra subsp. caerulea G. Schoolcraft 1997-8-6 2674 Lassen Diamond Mtn. 2316 Comment
  POM83011  Sanicula graveolens Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  CHSC115590  Saponaria officinalis Lowell Ahart; John Dittes 2015-7-14 20323 Lassen About 100 yards west of the road along Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  CAS-BOT-BC110337  Sarcobatus vermiculatus John Thomas Howell 1934-6-10 11897 Lassen Horse Lake. Comment
  CDA23526  Sarcobatus vermiculatus Robin Breckenridge 2007-5-1 PDR# 1349824 A Lassen Wendel. 0 Comment
  CHSC30628  Sarcobatus vermiculatus T. M. Lane 1975-7-7 35 Lassen SE of Horse Lake Rd, on se shore of Horse Lake; 19 km nne of Susanville. 1508 Comment
  CHSC64783  Sarcobatus vermiculatus Vernon H. Oswald 1995-5-24 6775 Lassen Modoc Plateau. Wendel Rd. (Lassen 320), 0.4 mi e of the e end of Amedee Rd. (6.1 mi e of Wendel). 1219 Comment
  HSC4526  Sarcobatus vermiculatus Fred J. Kindel 1955-7-14 Lassen Wendel, Hot Springs Comment
  NY540267  Sarcobatus vermiculatus J. T. Howell 1975-7-23 51414 Lassen Alkaline flat on Highway 395 about 5 miles southeast of Doyle 1310.6 Comment
  UCR67389  Sarcobatus vermiculatus George K. Helmkamp 1990-9-23 D- 5 Lassen 20 mi north of Litchfield along US Hwy 395 1437 Comment
  CAS-BOT-BC283087  Schedonorus arundinaceus Margaret Williams; Louella Bass 1972-10-22 EV 3 Lassen Elysian Valley west of Janesville, Sierra Nevada 1325 Comment
  CAS-BOT-BC111301  Schoenoplectus acutus var. occidentalis Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-8-20 1487 Lassen Long Creek, 1 mile south of Doyle Comment
  CAS-BOT-BC111303  Schoenoplectus acutus var. occidentalis John Thomas Howell 1975-7-23 51406 Lassen Wet grounds along Hwy. 395 between Johnstonville and Jonesville Comment
  CHSC93678  Schoenoplectus pungens var. longispicatus Lowell Ahart; John Dittes 2005-6-2 11975 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  UC2166  Scirpus nevadensis J. Burtt Davy Jun 17 1897-Jun 24 1897 3311 Lassen Amedee Honey Lake Valley, Amedee Comment
  CHSC66422  Scribneria bolanderi Vernon H. Oswald; Lowell Ahart 1996-6-17 7804 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On a flat on the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  CHSC7755  Scrophularia californica Beverley J. Wise 1969-5-18 110 Lassen 18.2 mi. N. E. of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. North sidewall of Willow Creek Canyon. 1463 Comment
  JEPS84931  Scrophularia desertorum Barbara Ertter with Gary Schoolcraft 1987-6-16 7191 Lassen ne side Honey lake (s side of Hot Springs VABM); Skeedaddle Mts 2286 Comment
  SEINET10744751  Scrophularia lanceolata Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 837 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
  RSA450332  Scutellaria holmgreniorum Gary Schoolcraft 1986-6-25 1641 Lassen S. of Observation Peak about 1.5 mi. east of Post Camp. 1677 Comment
  CAS-BOT-BC214261  Scutellaria nana G. Schoolcraft 1999-7-7 2855 Lassen N. end of Eagle Lake just ne. of Eagle Lake Campground 1584 Comment
  CAS-BOT-BC214263  Scutellaria nana H. D. Ripley; R. C. Barneby 1943-6-15 5764 Lassen Smoke Creek, N-E of Viewland 1341 Comment
  CAS-BOT-BC214268  Scutellaria nana Richard Olmstead 1984-6-27 584 Lassen Rye Patch Canyon Rd., 13.2 mi E of US 395, turnoff ca 14 mi. S of Ravendale 1548 Comment
  CHSC91527  Scutellaria nana L. P. Janeway 2005-7-4 8461 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  HSC82199  Scutellaria nana Thomas W. Nelson, Jane P. Nelson 1980-7-6 6054 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS88204  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1996-6-24 7863 Lassen 2.5 mi s of Eagle Lake (and 0.5 mi e of Eagle Lake Road (A1), Modoc Plateau, on w side of Papoose Meadows 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1549235  Scutellaria nana Richard Olmstead 1983-7-2 415 Lassen 16 mi s of Ravendale (1 mi s of rest area, near small stream, along US 395); US 395 1444 Comment
  UC1549236  Scutellaria nana Richard Olmstead 1984-6-27 581 Lassen turnoff 14 mi s of Ravendale (10.3 mi e of US 395); Rye Patch Canyon Road 1603 Comment
  UC1609093  Scutellaria nana Vernon H. Oswald and Lowell Ahart 1993-7-8 5653 Lassen on se edge of Poison Lake (Pittville Rd. (Lassen 111, 36N01) 1.9 mi n of Hwy 44) 1709 Comment
  UC1137460  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Forest and Range Expt. Sta. Lassen National Forest 1783 Comment
  UC1137766  Senecio aronicoides August L. Hormay 1934-5-15 Lassen 1.50 mi e Halls Flat; Lassen National Forest 1767 Comment
  UC506921  Senecio aronicoides George A. Fischer and Irwin H. Johnson 1933-7-14 F- 253 Lassen Lassen Forest 1783 Comment
  CAS-BOT-BC363326  Senecio aronicoides A. A. Heller 1938-6-4 15143 Lassen West of Fredonyer Pass 1676 Comment
  CDA38660  Senecio eurycephalus var. lewisrosei B. Villegas 2010-6-17 PDR# 1535022 Lassen South of Adin; Hwy. 139 at Milepost 58. 0 Comment
  UC2027206  Senecio hydrophiloides Anthony Baniaga 2011-6-21 388 Lassen Lassen National Forest. Southern McCoy Flat. Spalding Tract quandrangle Comment
  UC1583967  Senecio hydrophilus G. Schoolcraft 1990-8-14 2122 Lassen between M.P. 56 and 57 on Highway 139 s Adin 1432 Comment
  HSC28835  Senecio integerrimus D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19263 Lassen In Harvey Valley near Cone Springs Comment
  CAS-BOT-BC363810  Senecio integerrimus var. exaltatus John Thomas Howell 1934-6-14 12158 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  UC1137289  Senecio integerrimus var. exaltatus K. E. Bradshaw 1939-5-27 239 Lassen Black Mt. Experimental Forest, Plot 39-1 Lassen Forest 1767 Comment
  CHSC26149  Senecio triangularis Detzer; Sacks 1977-7-24 1 Lassen Along streambank, ca. 3 mi se of Milford, .5 mi. se of Laufman Ranger Station on unimproved USFS road. 1481 Comment
  UCR71483  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Northern Sierra Nevada Mtns, ridge of Diamond Mtns, c. 1.5 mi. east of Diamond Peak, c. 10 air mi due south of Susanville. 2256 Comment
  CHSC76260  Sesuvium verrucosum Lowell Ahart; Vernon H. Oswald 1999-9-13 8217 Lassen Field about 150 yards southwest of the parking area, about 1 mile south of the sign in station, Honey Lake Wildlife area, 5 1/2 miles (air) southeast of Standish. 1207 Comment
  HSC100806  Sidalcea glaucescens Lowell Ahart, John Dittes 2010-7-31 17016 Lassen S side of road, ~50 yd. E of culvert, where road crosses Hunsinger Draw, 1.9 (air) mi. NW of Moll Reservoir, 2.8 (air) mi. W of Ash Valley, and 8.4 (air) mi. SE of Adin. 1516 Comment
  JEPS117494  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
  UC1143016  Sidalcea glaucescens August L. Hormay 1934-7-2 Lassen 1/4 mi nw Black's Mtn; Lassen National Forest, nw of Black's Mtn 1706 Comment
  UC585099  Sidalcea glaucescens E. B. Babcock, G. L. Stebbins Jr. 1936-6-8 1778 Lassen 4 mi s Ravendale (slope of creek at n end of Secret Valley); n end Secret Valley, s of Ravendale 1371 Comment
  HSC82190  Sidalcea glaucescens Thomas W. Nelson, Jane Nelson 1980-7-6 6039 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  POM230480  Sidalcea oregana subsp. oregana D. D. Keck, Jens Clausen 1935-6-24 3740 Lassen 2 miles S. of Ravendale, Comment
  UC506975  Sidalcea oregana subsp. oregana George A. Fischer, Irwin H. Johnson 1933-7-12 F- 227 Lassen Lassen Forest , Patterson Flat 1737 Comment
  CHSC66729  Sidalcea oregana subsp. spicata Vernon H. Oswald; Lowell Ahart 1996-8-1 8114 Lassen N shore of the Hamilton Branch of the N. Fork of the Feather River ca. 0.1 mi downstream from Indian Ole Dam on Mountain Meadows Reservoir, SW of Westwood. 1524 Comment
  UC725938  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen a mi e Westwood; e of Westwood 1524 Comment
  CAS-BOT-BC384308  Silene bernardina John Thomas Howell 1934-7-10 12536 Lassen Between Harvey Valley and Patterson Flats Comment
  CHSC57274  Silene bridgesii Mary Meyer 1980-7-24 Lassen West of rocky outcrop at sharp bend in the Lookout Road. 2255 Comment
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Aug 11 2014
  UC1523715  Silene douglasii Gary Schoolcraft 1981-7-15 512 Lassen near top Fredonyir Peak; near top Fredonyir Peak 2346 Comment
  UC717968  Silene nuda David D. Keck 1944-7-8 5446 Lassen 2 mi e Westwood (in grassy meadow leading to Mountain Meadows Reservoir); Sierra Nevada, mdw leading to Mountain Meadows Reservoir 1524 Comment
  NY813531  Silene nuda subsp. insectivora G. Schoolcraft 1988-7-7 1818 Lassen Southeast corner of Madeline Plains ca. 1 mile south of Horne Ranch 1646 Comment
  CAS-BOT-BC75079  Sisymbrium altissimum Louella Bass 1973-5-25 46 Lassen Sierra Nevada. Elysian Valley. 1325 Comment
  CHSC5243  Sisymbrium altissimum L. Harman 1946-6-25 Lassen Eagle Lake. S. S. Camp at Webbs. 1584 Comment
  SEINET10448866  Sisymbrium altissimum Paul Gallian, David B. Dunn 1971-6-2 Gallian 521 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. Comment
  JEPS114987  Sisyrinchium bellum Lowell Ahart, John Dittes 2008-6-20 14964 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CDA38565  Sium F. A. Taylor 1939-7-5 s.n. Lassen Bieber. 0 Comment
  UC21380  Sium suave J. Burtt Davy Jun 17 1897-Jun 24 1897 3363 Lassen Honey Lake Valley Comment
  CHSC117279  Solanum dulcamara Lowell Ahart; John Dittes 2016-7-15 21226 Lassen About 1/2 mile (by road) souteast of the 4 tall poles, Ash Creek Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1261 Comment
  CAS-BOT-BC34688  Solanum lycopersicum J. H. Thomas 1969-9-7 15468 Lassen Susanville. Near center of town in disturbed fields, near a drivein. Comment
  NY820340  Solanum triflorum J. T. Howell 1973-7-10 49797 Lassen Susanville, in city park 1295 Comment
  UC1542917  Solanum triflorum G. Schoolcraft 1987-9-1 1774 Lassen Ash Valley, along Ash Valley road Ash Valley 1548 Comment
  CAS-BOT-BC365752  Solidago spectabilis Lassen 1927 G. S. Crew 1927-7-15 82 Lassen Lassen National Forest. Feather Lake 1737 Comment
  UC1136808  Solidago velutina subsp. californica L. R. Short 1936-8-20 S- 376 Lassen Burgess Spr. Exp. Range Lassen National Forest, Burgess Spr. Exp. Range 1859 Comment
  CAS-BOT-BC158899  Sorbus scopulina John Thomas Howell; Gordon H. True 1973-8-1 50151 Lassen Gold Run Creek Road south of Susanville, Diamond Range - Sierra Nevada 1584 Comment
  HSC95264  Sparganium emersum Gordon Leppig 1998-8-17 1052 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC95310  Sparganium emersum Gordon Leppig, Juli Neander, Kai Neander 1997-7-26 691 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC27654  Sparganium emersum subsp. emersum Jerry Snodgrass 1978-7-11 50 b Lassen Papoose Creek, SE corner of Eagle L. Meadow; in pool. 1584 Comment
  UC309  Sparganium emersum var. emersum J. Burtt Davy Jun 17 1897-Jun 24 1897 397 Lassen sloughs of Susan River; Honey Lake Valley Comment
  CHSC66869  Sparganium erectum subsp. stoloniferum Vernon H. Oswald; Lowell Ahart 1996-9-10 8273 Lassen Mountain Meadows Reservoir SW of Westwood. Along the northwest shore of the reservoir between the railroad and Indian Ole Dam. 1539 Comment
  CHSC64869  Sphaeromeria potentilloides var. potentilloides Vernon H. Oswald 1995-6-26 6934 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527) 0.4 mi n of Spooner Rd. in Ash Valley. On the e side of the road adjacent to a flat of low sagebrush. 1542 Comment
  CAS-BOT-BC149626  Spiraea douglasii Lassen 1927 G. S. Crew 1927-7-24 87 Lassen Harvey Valley, Lassen National Forest 1676 Comment
  UC1037224  Spiraea douglasii Leo Whitney 1934-7-2 1592 Lassen ca 14 mi w Eagle Lake (Harvey Valley Spring); Lassen National Forest, Harvey Valley 1737 Comment
  CHSC61074  Spiranthes porrifolia Vernon H. Oswald 1993-8-3 5754 Lassen Cooper Swamp located E of Siver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  SEINET3818362  Spiranthes romanzoffiana A. A. Heller 1938-1 Lassen Comment
  GMDRC6448  Stanleya viridiflora J. M. Andre, Glenn Clifton 1993-6-14 30001 Lassen northeast base of Shaffer Mtn near Secret Creek, about 20 miles ENE of Susanville 1646 Comment
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  CAS-BOT-BC391078  Stellaria longipes subsp. longipes Louella Bass 1973-5-29 87 Lassen Elysian Valley 1325 Comment
  CHSC5230  Stellaria longipes var. longipes P. Balch 1955-7-20 Lassen Eagle Lake. Roadside meadow 3 1/2 mi from Antelope lookout. 1676 Comment
  CHSC76747  Stellaria longipes var. longipes L. P. Janeway 1999-9-5 6577 Lassen High Cascade Range. Upper Pine Creek near Stephens Camp; northwest corner of Upper Stephens Meadow. On south edge of pond. 1900 Comment
  UC120067  Stellaria longipes var. longipes unknown 1892-6-23 Lassen Honey Lake Comment
  RSA713119  Stenotus acaulis L. P. Janeway, B. Castro 2005-7-10 8487 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
  UC86569  Stenotus acaulis T. S. Brandegee 1892-7-2 Lassen Near Susanville Comment
  CAS-BOT-BC375594  Stephanomeria lactucina Clare B. Hardham 1971-8-22 18431 Lassen Diamond Mountain 2346 Comment
  HSC83372  Stephanomeria lactucina R. W. Becking 1987-7-29 Lassen Lassen National Forest, Caribou Wilderness, Gem Lake Comment
  CDA8868  Stephanomeria spinosa E. E. Fix 1946-7-21 Lassen Susanville. 0 Comment
  JEPS36870  Stephanomeria tenuifolia Brown and Wieslander 1922-7-23 35 Lassen Martin Springs Eagle Lake Comment
  UC2062575  Stephanomeria virgata subsp. pleurocarpa Belinda Lo with Alex Randolph-Lowe 2017-10-9 390 Lassen LASSEN COUNTY: Bureau of Land Management, north of Red Rock Road. Comment
  UCR244171  Stipa comata Jim Andre, G. L. Clifton 1993-6-3 19701 Lassen Foothills of Sierra Nevada Mtns., Honey Lake Valley near Laufman Ranger Station, c. 4 mi. SSE of Milford (at U.S. 395), c. 30 mi. south of Susanville, just inside Plumas NF boundary 1477 Comment
  SEINET10966883  Stipa thurberiana Paul Gallian, David B. Dunn 1971-6-2 Gallian 513 Lassen 6 mi. N. of Hallelujah jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along high ridge and in sandy wash 1402 Comment
  JEPS102871  Streptanthella longirostris Vernon H. Oswald 2001-6-2 10039 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  HSC22877  Stuckenia pectinata John Pratt 1970-6-14 13 Lassen Comment
  CHSC64843  Swertia albicaulis var. albicaulis Vernon H. Oswald 1995-6-26 6920 Lassen Modoc Plateau. Ash Valley Rd. (Lassen 527), 4.2 mi w of Madeline. 1652 Comment
  CHSC23553  Symphoricarpos rotundifolius var. rotundifolius W. O. Baum 1971-7-5 21 Lassen N slope of Gallatin Peak. 2011 Comment
  UC1949147  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment</