Search Results — 2000 specimen records retrieved (1610 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC1196917  Abies magnifica var. magnifica A. W. and M. Kildale 1926-9-1 2725 Lassen 11 mi n Chester; Lassen National Park, Juniper Lakes 2054 Comment
  CAS-BOT-BC28650  Achillea millefolium Albert Michael Vollmer; L. Beane 1953-7-1 97 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur. 1554 Comment
  CHSC23526  Achillea millefolium Wayne O. Baum 1971-7-20 71 -53 Lassen N. slope of Gallatin Peak. 2011 Comment
  CHSC4909  Achillea millefolium A. E. Anderson 1967-7-1 67 Lassen Along fence n of road to Murrer Ranch, 1 mi. from ranch buildings. 1371 Comment
  CHSC61621  Achillea millefolium Arthur C. Barrett 1918-6-19 29 Lassen Laufman Ranger Station. NW slope in Plumas Forest. 1463 Comment
  UC1136758  Achillea millefolium George A. Fischer and Irwin H. Johnson 1933-7-12 F 207 Lassen Grass Valley 1700 Comment
  UC74065  Achillea millefolium J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Chat; Long Valley Comment
Read comments
Jan 7 2012
  CAS-BOT-BC260403  Achnatherum hymenoides P. Monnet 1913-7-1 799 Lassen Hot Springs Peak 1828 Comment
  UC1024870  Achnatherum lemmonii Leo Whitney 1935-5-26 3156 a Lassen 10 mi e Adin (Ash Creek); Ash Creek Comment
  UC163595  Achnatherum lemmonii Milo S. Baker Lassen s side Dixie Mt. Dixie Mt. Comment
  CHSC64900  Achnatherum nevadense Vernon H. Oswald 1995-6-19 6879 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. 1383 Comment
  UCD18962  Achnatherum occidentale Jack N. Reppert 1965-7-12 14 Lassen Lassen National Forest, Harvey Valley Allotment (HV 81-76). 1737 Comment
  UC1024835  Achnatherum occidentale subsp. californicum Leo Whitney 1935-6-10 3221 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UCD51042  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-23 3296 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  UCD51136  Achnatherum occidentale subsp. californicum L. Whitney 1935-6-18 3262 b Lassen Logan Mountain, 13 miles north of Lassen Peak, Lassen National Forest. 1981 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
  UC1024687  Achnatherum occidentale subsp. pubescens Leo Whitney 1933-7-15 2158 Lassen ca. 16 mi w of upper end of Eagle Lake (Harvey Mountain); Lassen National Forest Comment
  UC1024939  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-26 3334 Lassen Camp 10, Fruit Grower's Supply Company Lassen National Forest Comment
  UC1024959  Achnatherum occidentale subsp. pubescens Leo Whitney 1935-6-24 3303 Lassen ca. 13 mi w of n end of Eagle Lake (Squaw Valley); Squaw Valley Comment
  UC1143012  Achnatherum occidentale subsp. pubescens August L. Hormay 1934-6-30 Lassen Harvey Mtn. Lassen National Forest 2133 Comment
  UCD32666  Achnatherum occidentale subsp. pubescens Beecher Crampton 1954-7-5 2066 Lassen Lassen County, 5.5 miles west of Susanville, along highway 36. 1447 Comment
  CHSC80710  Achnatherum speciosum V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10034 Lassen Northeast of Doyle in the Fort Sage Mtns, trailhead to top of mountain from the end of a 4WD road. 1798 Comment
  SEINET201660 Image available Achnatherum speciosum A. Cronquist, AH Holmgren 1992-6-17 8467 Lassen 50 mi SE of Susanville 1372 Comment
  RSA700231  Achnatherum thurberianum L. P. Janeway 2001-6-20 7205 Lassen High Cascade Range. 0.6 km east of Road 111 and 1.3 km south of Road 35N60; about 11 km west of Little Valley, 3.9 km east-northeast of Coble Mountain. 1402 Comment
  UC584332  Achnatherum thurberianum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2226 Lassen 6 mi s Ravendale 1660 Comment
  CAS-BOT-BC217993  Achnatherum webberi David D. Keck; J. Clausen 1935-6-24 3749 Lassen 2 miles S of Ravendale 1463 Comment
  UC769950  Achnatherum webberi R. F. Hoover 1940-9-29 4647 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UCD51302  Achnatherum webberi L. Whitney 1935-7-31 3587 Lassen Ashurst Mt. Comment
  CHSC112418  Acmispon denticulatus Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18746 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-BC412872  Aconogonon davisiae John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50667 Lassen NE. of Diamond Mt. 2255 Comment
  CAS-BOT-BC418769  Aconogonon phytolaccifolium Alice Eastwood 1912-8-22 1878 Lassen Morgans Springs [Morgans Hot Springs, el. 5000 ft.], Lassen Butte Region Comment
  CAS-BOT-BC391607  Actaea rubra John Thomas Howell; Gordon H. True 1973-8-1 50164 Lassen Gold Run Creek road south of Susanville, Diamond Range 1584 Comment
  UCD51460  Aegilops cylindrica Andy Babcock 1981-6-10 s.n. Lassen Comment
  SEINET10814664  Agastache parvifolia Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 847 Lassen Lassen National Forest, Eagle Lake Ranger District. Intersection of Forest Service road 32N09 and Forest Service route 10, 6 miles SW of state route 44. 1971 Comment
  HSC63922  Agastache parvifolia Teresa Prendusi 1980-7-1 Lassen McCoy Flat, 4 mi. W of N tip of Eagle Lake- along side of road. 1646 Comment
  HSC86888  Agastache parvifolia R. Carter 1967-7-3 584 Lassen S side of rd. on way to Eagle Lake Biology Station and Willow Creek 1585 Comment
  UC1483811  Agastache urticifolia G. Schoolcraft 1979-7-5 122 Lassen n face Observatioin Peak; n face of Observation Peak 1828 Comment
  CAS-BOT-BC30238  Ageratina occidentalis George Wilson Gillett 1957-7-26 904 Lassen Butte lake, point of rocks west of outlet and above trail 1844 Comment
  SEINET10757871  Ageratina occidentalis Andrew Townesmith, Karen M. Meyer 2007-7-20 Townesmith 836 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River. T29N R11E S6 SW 1/4. 1429 Comment
  CAS-BOT-BC30232  Ageratina occidentalis William Bridge Cooke 1938-8-24 11580 Lassen In small valley just west of Bolam Creek. Also on an outcropping west of Horse Camp in the Shasta Fir Forest 2133 Comment
  CAS-BOT-BC30234  Ageratina occidentalis Hans Leschke 1961-8-18 1832 Lassen Summit area of Diamond Peak 2423 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
  CHSC64836  Agoseris glauca var. glauca Vernon H. Oswald 1995-6-26 6944 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi E of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  CHSC93704  Agoseris glauca var. glauca Lowell Ahart; John Dittes 2005-6-1 11849 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction. 1448 Comment
  CAS-BOT-BC22893  Agoseris heterophylla Margaret J. Williams; Gary Schoolcraft; Arnold Tiehm 1986-5-12 82- 19 -1 Lassen Smoke Creek Rd., 0.1 mi E of Hwy 395 1371 Comment
  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
  POM318656  Agoseris heterophylla var. heterophylla Patricia Wilder 1971-6-20 5053 Lassen About 6 miles southeast of Adin on Adin - Madelaine Road; Modoc National Forest; Cascades mountain range, Cascade River drainage area 1768 Comment
  CHSC36498  Agoseris retrorsa Theresa Costa 1982-6-2 28 Lassen Ca. .6 mi W jct forest service rds 5.16 and 5.17, ca. 10 yd E 5.16 heading over Black Mtn. Comment
  CAS-BOT-BC127583  Agropyron cristatum John Thomas Howell 1974-7-8 50468 Lassen Sierra Nevada. Susanville. 1295 Comment
  SEINET3915762  Agropyron cristatum LeDoux, Dunn 1973-5-24 859 Lassen Collected at jct. of Hwy. 70&395 at Arco Station.; 0 Comment
  UC1562323  Agropyron cristatum Vernon H. Oswald and Lowell Ahart 1990-7-25 4396 Lassen 2.2 mi w of Highway 395 (intersection of Hwy 70 and Scott Road) 1463 Comment
  UCD32657  Agropyron spicatum Beecher Crampton 1954-7-5 2053 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  CAS-BOT-BC127523  Agrostis capillaris Gary Schoolcraft 1984-7-30 1326 Lassen Along Smoke Creek about 5 miles below Big Springs. 1584 Comment
  CAS-BOT-BC127239  Agrostis exarata John Thomas Howell; Gordon H. True 1973-8-1 50182 Lassen Sierra Nevada. Gold Run Creek road south of Susanville, Diamond Range. 1584 Comment
  HSC8791  Agrostis exarata D. E. Anderson 1963-8-25 2803 Lassen 3 mi. E of Cromberg 1372 Comment
Read comments
Apr 25 2013
  UC1100103  Agrostis exarata Malcolm A. Nobs, S. Galen Smith 1949-7-21 1057 Lassen 4 mi n Madeline Comment
  UC53515  Agrostis exarata M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixie Valley Comment
  UCD52115  Agrostis exarata R. Tofsrud 1947-7-1 240 Lassen Between Bieber and Nubieber. Comment
  UCD52428  Agrostis exarata L. Whitney 1933-8-2 2152 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  UCD53118  Agrostis pallens Beecher Crampton 1960-6-20 5732 Lassen Halls's Flat, 1/2 mile south Black's Mtn. Exper. Sta. USDA, 11 miles n.w. Bogard Ranger Station, Lassen Natl. Forest. 1706 Comment
  UCD53173  Agrostis pallens L. Whitney 1933-8-7 2194 Lassen Slate Creek, 8 miles northwest of Eagle Lake, Lassen National Forest. 1920 Comment
  CAS-BOT-BC138802  Agrostis scabra John Thomas Howell 1973-7-10 49768 Lassen Sierra Nevada. Near Westwood. 1554 Comment
  JEPS123839  Agrostis stolonifera Lowell Ahart, John Dittes 2015-7-14 20335 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  RSA129202  Agrostis stolonifera H. S. Yates 1936-8-11 6069 Lassen Bexter Creek [Baxter? creek]. Susanville. 1280 Comment
  JEPS28055  Agrostis thurberiana George W. Gillett 1957-7-28 925 -a Lassen upper end Butte Lake (trail to Widow Lake above junction with Snag Lake trail, 100 yds above trail junction); Lassen Volcanic National Park 1859 Comment
  CAS-BOT-BC138571  Agrostis variabilis John Thomas Howell; Gordon H. True 1973-8-1 50234 Lassen Sierra Nevada. East slope of Diamond Range south of Susanville. Headwaters of Baxter Creek. 2133 Comment
  SEINET7594432 Image available Agrostis variabilis George W. Gillett 1957-1 927 Lassen Lassen Volcanic National Park, Trail to Widow Lake above junction with Snag Lake trail at upper end of Butte Lake. Dry wash 100 yards above trail junction. 1859 Comment
  JEPS121269  Alisma lanceolatum Lowell Ahart 2013-7-22 18841 Lassen W margin of duck field, about 80 yards S of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS88427  Alisma plantago-aquatica Vernon H. Oswald and Lowell Ahart 1996-8-1 8106 Lassen sw Westwood (shore of reservoir ne of Indian Ole Dam); Mountain Meadows Reservoir 1539 Comment
  RSA0039525  Alisma triviale Lowell A. Ahart, John Dittes 2012-7-9 18294 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
  CHSC29895  Allium acuminatum Robin L. Ondricek 1978-7-22 105 Lassen One mi s of Colley Point Overlook on Hwy 139. 1670 Comment
  CHSC7661  Allium acuminatum Beverley J. Wise 1969-5-18 138 Lassen 17.0 mi. East of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  HSC81650  Allium acuminatum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6026 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  RSA367043  Allium amplectens Anstruther Davidson s.n. Lassen [No locality information provided] Comment
  CAS-BOT-BC461096  Allium anceps B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6553 Lassen Just S of Ravendale 1580 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
  SEINET10472036  Allium campanulatum Mary Merello 1993-6-27 Merello 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94. Open conifer woodlands, dry. 1700 Comment
  SEINET3884275  Allium campanulatum Mary Merello, H. H. Schimdt; L. Woodruff 1993-6-27 743 Lassen Lassen National Forest at intersection of Forest Service Road 32N15 and Hwy. 94.; 0 1700 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
  UCD138558  Allium lemmonii A. A. Beetle; G. L. Stebbins Jr. 1942-5-29 3366 Lassen 5.2 miles E of Bieber, Big 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
  CDA40010  Allophyllum integrifolium T. C. Fuller 1963-7-15 10889 Lassen Road to Little Valley, 2.9 miles southeast of Pittville. 0 Comment
  CHSC26169  Alnus incana subsp. tenuifolia Detzer; Sacks 1977-7-24 2 Lassen Ca. 3 mi se Milford, .5 mi se Laufman Ranger Stn., on unimproved USFS road. 1481 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
  RSA0011565  Alopecurus R. F. Thorne, Larry E. DeBuhr 1975-8-22 46987 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  UC60734  Alopecurus aequalis M. S. Baker and F. Nutting 1894-7-1 Lassen n. side Dixey Mts. Comment
  UCR80283  Alopecurus aequalis A. A. Beetle 1941-6-28 2795 Lassen Route 36, 10 mi west of Chester Comment
  CDA42956  Alopecurus carolinianus L. Ahart, John Dittes, Todd Sloat 2013-6-8 18731 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS71146  Alopecurus geniculatus Brown and Wieslander 81 Lassen Comment
  JEPS87507  Alyssum desertorum Vernon H. Oswald and Lowell Ahart 1993-6-14 5534 Lassen 20 mi e.-n.e. of Spaulding Tract Road ((Rd. 518, 33N89), Eagle Lake Road (Lassen Al) at Sandy Beach on the w. shore of Eagle Lake); Eagle Lake, Sandy Beach 1566 Comment
  CHSC107996  Alyssum minus subsp. micranthum Lowell Ahart; John Dittes 2011-6-20 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC67190  Alyssum minus subsp. micranthum James D. Jokerst 1991-5-28 3293 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, ca. 400 ft E of the highway on slopes above road, S of a small canyon mouth. 1554 Comment
  CDA42845  Alyssum minus var. micranthum L. Ahart, John Dittes 2011-6-2 17493 Lassen About 20 yards east of the stream, about 80 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. Comment
  CHSC5065  Amaranthus albus D. L. Stites 1967-7-1 143 Lassen Ca. 200 yds ne of Eagle Lake Biology Station. 1524 Comment
  CAS-BOT-BC174355  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 east of Sierra Valley 1584 Comment
  SEINET6190435  Amelanchier alnifolia var. semiintegrifolia C. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  POM253370  Amelanchier pallida A. A. Heller 1938-6-4 15144 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  RSA38467  Amelanchier pallida Philip A. Munz 1947-5-19 11859 Lassen Fredonyer Forest Camp Ground on Hwy 36 W of Susanville. 1509 Comment
  CAS-BOT-BC142543  Amelanchier utahensis Alice Eastwood 1912-8-22 1807 Lassen Trail from Morgans Springs to Lassen Butte Comment
  CAS-BOT-BC142538  Amelanchier utahensis Philip A. Munz 1947-5-20 11886 Lassen Laufman Forestry Public Camp Ground, above Milford 1524 Comment
  CAS-BOT-BC222253  Amsinckia John Thomas Howell 1934-6-16 12219 Lassen Big Valley, 4 miles ne. of Bieber Comment
  RSA0091257  Amsinckia macrosepala Amos Arthur Heller 1938-6-23 15204 Lassen Just outside of Johnstonville on U.S. Highway 395. Comment
  UC24607  Amsinckia menziesii var. menziesii Milo S. Baker 1893-7-14 Lassen Money Lake Valley Comment
  CHSC25304  Amsinckia tessellata Pauleen Broyles 1977-6-1 151 Lassen Skedaddle Ranch Road at turn-off of South Fork Reservoir road ca 8 km ne of Herlong. 1660 Comment
  UC61145  Amsinckia tessellata var. tessellata Jos. Burtt Davy Lassen Honey Lake Valley Awadee Comment
  CHSC27616  Ancistrocarphus filagineus Robert A. Schlising 1978-6-8 3287 Lassen E of Eagle Lake and N of Murrers Upper Meadow. 1536 Comment
  JEPS88217  Ancistrocarphus filagineus Vernon H. Oswald and Lowell Ahart 1996-6-17 7797 Lassen s side of Bizz Johnson Trail just e Devils Corral Trailhead (trailhead located off of Hwy 36 ca. 7 mi w of Susanville); Modoc Plateau 1420 Comment
  UC1587035  Ancistrocarphus filagineus G. Schoolcraft 1991-6-19 2168 Lassen about 1.5 mi w Canby 1341 Comment
  POM36284  Ancistrocarphus filagineus Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  CHSC36440  Antennaria argentea Jeff Megorden 1981-6-13 4 Lassen NE side of Galletin Peak. 1584 Comment
  UC1523709  Antennaria argentea Gary Schoolcraft 1981-7-8 501 Lassen north of Coulthurst Flat 1828 Comment
  UC891493  Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen ca 12 mi n of, at lava beds Fall River Mills (Shasta Co.); Fall River 1371 Comment
  SEINET2029685 Image available Antennaria argentea C. L. Hitchcock 1940-5-26 6616 Lassen Lava beds about 12 miles north of Fall River Mills (in Shasta County) on Fall River 1372 Comment
  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
  JEPS94489  Antennaria dimorpha Vernon H. Oswald and Lowell Ahart 1997-5-27 8505 Lassen 0.3 mi e of Highway 139 (n of Susanville on Forest Route 38N04 between Hwy 139 near Willow Creek Guard Station and Coyote Flat, betw road and creek paralleling rd to north); Forest Route 38N04 1560 Comment
  CHSC105248  Antennaria geyeri Lowell Ahart; John Dittes 2010-7-31 16974 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  UC1137666  Antennaria geyeri L. R. Short and Wm. Gansberg 1936-7-3 S- 475 Lassen Lassen National Forest 1828 Comment
  JEPS19756  Antennaria luzuloides Rimo Bacigalupi with S. Galen Smith 1957-6-28 5996 Lassen 3.6 mi n of Madeline 1645 Comment
  UC380912  Antennaria luzuloides Marcus E. Jones, A. M. 1897-6-18 Lassen Chat 1524 Comment
  CHSC66233  Antennaria luzuloides subsp. aberrans Vernon H. Oswald; Lowell Ahart 1996-6-24 7857 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
  CHSC101038  Antennaria luzuloides subsp. luzuloides John Dittes 2008-5-22 1531 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 outcrop on northeast side of Willow Creek. 484 Comment
  SBBG63415  Antennaria rosea S. W. Hutchinson, M. N. Ackley -Jun-1925 214 Lassen Eagle Lake 1554 Comment
  CHSC60304  Antennaria rosea subsp. confinis Mary Ann Showers 1992-6-13 2558 Lassen Lassen Volcanic National Park. Volcanic outcrops southwest of Widow Lake. 2072 Comment
  JEPS95712  Anthemis cotula Vernon H. Oswald and L. Ahart 1995-8-14 7175 Lassen T30N R15E center NE1/4 Sec. 3, 4425 ft, Modoc Plateau, Sagebrush Scrub, alkaline clay soil. Hwy. 395 at the N end of a flooded playa (Mud Flat) 3.4 mi N of Smoke Creek Ranch Rd., N of Susanville. Roadside weed. 1348 Comment
  UC885063  Antirrhinum vexillocalyculatum subsp. breweri C. L. Hitchcock 1940-5-26 6597 a Lassen ca 12 mi n Fall River Mills, Shasta County (on Fall River); Fall River 1371 Comment
  CHSC117198  Aphyllon fasciculatum Lowell Ahart; John Dittes 2016-6-7 20997 Lassen On the east side of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS49800  Apocynum androsaemifolium Brown and Wieslander 1922-7-17 3 Lassen Eagle Lake, Martin Springs Comment
  HSC69617  Apocynum androsaemifolium Gary Schoolcraft 1979-7-21 81 Lassen Little Spencer Basin 183 Comment
  UC1126589  Arabis glabra A. Simontacchi 1940-7-3 916 Lassen 2.6 mi n Cone Mtn.; Lassen National Forest, Halls Flat Quad. 1935 Comment
  SEINET228463  Arabis holboellii var. pinetorum Reed C. Rollins, Kathryn W. Rollins 1981-5-31 81176 Lassen Just north of Eagle Lake. Comment
  NY119564  Arabis sparsiflora var. sparsiflora D. W. McNeal 1983-6-5 2842 Lassen Above co. rd. #201 above the N shore of Eagle Lake, 2.9 miles W of the jct. of Hwy. 139. Comment
  UC1584019  Arceuthobium campylopodum G. Schoolcraft 1990-8-1 2120 Lassen betw Cleghorn and Heath Reservoirs 1828 Comment
  CAS-BOT-BC45901  Arctostaphylos nevadensis A. W. Kramer 1930-6-9 s.n Lassen Prospect Pk, Lassen National Park Comment
  CHSC5245  Arctostaphylos nevadensis M. West 1946-7-12 Lassen Eagle Lake. Silver Lake. 1981 Comment
  RSA46474  Arctostaphylos nevadensis Doris K. Kildale 1926-9-11 2764 Lassen Juniper Lake. 2055 Comment
  SD43498  Arctostaphylos patula Philip A. Munz 1947-5-18 11865 Lassen Fredoyner Forestry Public Campground, W of Susanville 1509 Comment
  UC1137730  Arctostaphylos patula L. R. Short 1936-5-7 S- 346 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1859 Comment
  UC549429  Arctostaphylos patula F. Farris 1934-12-30 Lassen Diamond Mt. 1524 Comment
  HSC7750  Arctostaphylos viscida R. J. Vernimen 1963-5-4 28 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
Read comments
Apr 29 2013
  CHSC72309  Arenaria aculeata L. P. Janeway; Glenn Clifton 1998-7-9 5738 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
  POM101445  Arenaria congesta Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  JEPS117259  Arenaria congesta var. congesta Lowell Ahart, John Dittes 2010-7-31 17011 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
  JEPS28438  Arenaria congesta var. congesta George W. Gillett 1957-7-29 945 Lassen Along trail between Butte Lake Snag Lake; Lassen Volcanic National Park 1859 Comment
  UC465891  Arenaria congesta var. subcongesta Franklin P. Nutting Lassen Dixey Valley Comment
  UC8098  Arenaria congesta var. subcongesta M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  UCR71437  Arenaria congesta var. subcongesta Barbara Ertter, Gary Schoolcraft 1987-6-16 7193 Lassen Skeedaddle Mtns, NE side of Honey Lake; saddle on E side of Hot Springs Peak 2195 Comment
  UC120411  Arenaria congesta var. suffrutescens T. S. Brandegee 1892-7-26 Lassen Milford Comment
  UC584297  Arenaria congesta var. suffrutescens G. L. Stebbins Jr. and J. A. Jenkins 1937-7-6 2206 Lassen just w of the town on Inspiration Point; Susanville 1280 Comment
  CAS-BOT-BC401656  Argemone munita subsp. munita Margaret Williams; Steven Williams 1974-7-26 74 -L-11 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CHSC52769  Argemone munita subsp. rotundata L. P. Janeway 1990-7-4 3770 Lassen Dry gravelly bench near east-side of saddle 0.8 mi NE of Meadowview Peak. 1981 Comment
  CAS-BOT-BC82116  Arnica chamissonis John Thomas Howell 1934-7-8 12512 Lassen Harvey Valley Comment
  CHSC27596  Arnica chamissonis George Deniso 1978-7-21 96 Lassen E end of Mahogany Lake - SE of Eagle L. 2060 Comment
  CHSC66713  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1996-8-1 8109 Lassen Mountain Meadows Reservoir SW of Westwood. 1539 Comment
  JEPS17745  Arnica chamissonis Rimo Bacigalupi with G. T. Robbins 1955-7-20 5414 Lassen Mosquito Creek (along), in Corporation Meadow, s end of Warner Mts. Modoc National Forest, Warner Mts., Corporation Meadow, Mosq 2042 Comment
  CHSC99739  Arnica chamissonis subsp. foliosa 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
  RSA0059627  Arnica chamissonis subsp. foliosa Lowell Ahart, John Dittes 2011-6-21 17534 Lassen About 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA0115088  Arnica chamissonis subsp. foliosa Lowell A. Ahart, John Dittes 2008-6-20 14902 Lassen About 150 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  OBI75878  Arnica cordifolia Anthony Baniaga 2011-6-29 401 Lassen Lassen Natl Forest. Willard Ck., Fredonyer Pass. Fredonyer Pass quad T29N r10E sec 14 SW of SW 1500 Comment
  CAS-BOT-BC85029  Arnica sororia Elmer I. Applegate 1897-6-3 866 Lassen Madeline Plains Comment
  OBI76979  Arnica sororia Anthony Baniaga 2011-6-23 389 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  SBBG128878  Arnica sororia L. Ahart 2011-6-20 17483 Lassen meadow, ca. 30 yards E of the stream, ca. 80 yards N of where the rd crosses Hunsinger Draw, 1.9 mi (air) NW of Moll Reservoir, 2.8 mi (air) W of Ash Valley, 8.4 mi (air) SE of Adin 1520 Comment
  CAS-BOT-BC85002  Artemisia arbuscula subsp. arbuscula James Vale; Keith Wagnon; Walter Knight; Irja Knight 1981-5-20 4117 Lassen 81 miles south of Alturas in Lassen County. Comment
  CAS-BOT-BC85004  Artemisia arbuscula subsp. arbuscula John Thomas Howell 1934-7-6 12455 Lassen Harvey Valley Comment
  SEINET6775323 Image available Artemisia cana subsp. bolanderi G. Schoolcraft 1979-10-3 198 Lassen In Dry Valley, just west (0.25 miles) of Dry Valley Gap 1615 Comment
  UC1119576  Artemisia cana subsp. bolanderi A. Simontacchi 1940-9-16 950 Lassen 1.3 mi ne Ebey Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1479613  Artemisia cana subsp. bolanderi G. Schoolcraft 1979-9-27 195 Lassen Painter Flat 1719 Comment
  CAS-BOT-BC84831  Artemisia cana subsp. cana Elmer I. Applegate 1897-6-3 859 Lassen North end of Madeline Plains, northern Lassen County. Comment
  JEPS28717  Artemisia douglasiana George W. Gillett 1957-7-29 955 Lassen near Butte Lake Trail (above Snag Lake); Lassen Volcanic National Park 1859 Comment
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Aug 23 2012
  UC29681  Artemisia douglasiana M. S. Baker and Frank Nutting 1894-1 Lassen Bridge Creek Comment
  CAS-BOT-BC90330  Artemisia douglasiana Clare B. Hardham 1971-8-22 18374 Lassen North slopes, Diamond Mountain 2133 Comment
  UC1776711  Artemisia dracunculus G. Schoolcraft 1992-8-11 2248 Lassen Near inters. of Wingfield and Bass Hill Roads 1322 Comment
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Aug 12 2019
  UC91221  Artemisia ludoviciana subsp. incompta unknown 1892-6-29 Lassen Janesville Comment
  SEINET251695  Artemisia nova Arnold Tiehm, Gary Schoolcraft 2003-9-11 14368 Lassen 2.9 Rd miles N of Karlo Rd. on highway 395 from Litchfield to Alturas, Just E of the highway. 1402 Comment
  CAS-BOT-BC97326  Artemisia tridentata subsp. tridentata Clare B. Hardham 1971-8-22 18395 Lassen Diamond Mountain 2346 Comment
  JEPS37009  Artemisia tridentata subsp. tridentata W. L. Jepson 1918-8-5 7818 Lassen near South Fork Peak 1645 Comment
  RSA758317  Artemisia tridentata subsp. tridentata Doug Goldman 2004-11-5 2935 Lassen To the southwest side of Route 395, around 0.75 miles southwest of Honey Lake 1256 Comment
  UC1136827  Asclepias speciosa George A. Fisher, Irwin H. Johnson 1933-7-29 F Lassen Stringer Lassen National Forest 1694 Comment
  JEPS124872 Image available Asclepias speciosa Lynne C. Carter 1967-7-11 81 Lassen 1.1 mi. South of Millford on Hwy 395. West of Honey Lake. Comment
  RSA757476  Aster ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass at end of old crumbling paved road. 1524 Comment
  POM39868  Aster campestris Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 Comment
  UCR67471  Aster foliaceus George K. Helmkamp 1990-9-23 G- 12 Lassen north of Ravendale 1677 Comment
  RSA18255  Aster foliaceus var. parryi C. B. Wolf 1929-9-1 3787 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. 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
  RSA712642  Aster occidentalis var. occidentalis L. P. Janeway 2005-8-31 8513 Lassen Northern High Sierra Nevada. Diamond Mountains; head of large flat dry meadow at head of Bird Creek; 0.8 km northeast of Meadow View Peak. 1960 Comment
  CHSC23442  Astragalus K. R. Stern; D. B. Joley, J. G. Geschke 1974-6-22 5810 Lassen Ca. 16.5 mi w of Madeline, on Madeline-Adin Road. 1548 Comment
  CHSC69211  Astragalus James D. Jokerst 1991-5-28 3299 Lassen Modoc Plateau. Junction Hwy. 395 with Hwy. 36 SE of Susanville, E side of road 150 ft S of junction. 1280 Comment
  NY791369  Astragalus andersonii M. J. Williams 1974-8-4 74-L- 83 Lassen About 2 miles west of Highway 395, near Highway 70 1493.5 Comment
  NY791374  Astragalus andersonii LeDoux 1973-5-24 861 Lassen Collected at jct. of Highways 70 and 395 at Arco Station. Comment
  SEINET5323325  Astragalus andersonii M. J. Williams 1974-8-4 L- 74 -83 Lassen west of Hwy 395, near Hwy 70 in former burn area 1494 Comment
  CAS-BOT-BC27614  Astragalus anxius Robert J. Meinke; Kaye 1991-7-16 6108 Lassen Ash Valley, ca. 25 km W of Madeline, along Ash Valley Rd. 1550 Comment
  UC1483838  Astragalus anxius G. Schoolcraft 1980-8-14 307 Lassen w of Madeline; Ash Valley 1548 Comment
  NY790602  Astragalus argophyllus var. argophyllus A. Tiehm 1986-5-12 10347 Lassen 1 road mile west of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  CAS-BOT-BC178763  Astragalus canadensis var. brevidens John Thomas Howell 1977-8-11 52718 Lassen EAst of Beckwourth Pass, near Halleluja Junction - Sierra Nevada 1554 Comment
  UCD33606  Astragalus curvicarpus Beecher Crampton 1970-6-26 8639 Lassen Lassen County, 10 miles north of Milford. Comment
  RSA60316  Astragalus curvicarpus E. K. Balls 1950-5-9 15949 Lassen 6 miles south of Doyle, Hwy 395. 1372 Comment
  SEINET948261  Astragalus curvicarpus Ira. L. Wiggins, Dorothy B. Wiggins 1961-1 16331 Lassen Gravelly slopes at margin of grain field 13.5 mi. E of Susanville, sec 36 Comment
  CHSC60738  Astragalus curvicarpus var. curvicarpus Vernon H. Oswald; Lowell Ahart 1993-6-14 5519 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
  CAS-BOT-BC177835  Astragalus curvicarpus var. curvicarpus Alice Eastwood; John Thomas Howell 1940-6-16 8346 Lassen Buntingville Comment
  NY658500  Astragalus filipes P. H. Raven 1958-6-17 13290 Lassen Along US Highway 395, o.4 mile South of Ravendale Comment
  SEINET3140019  Astragalus filipes R. W. Spellenberg 1996-6-13 12334 Lassen 26 km S of Doyle on US Hwy 395 1430 Comment
  UC1583579  Astragalus filipes G. Schoolcraft 1990-6-13 2093 Lassen in John's Valley about 4 mi s Nubierber; s of Nubieber in John's Valley 1371 Comment
  CAS-BOT-BC182955  Astragalus filipes T. C. Fuller 1965-8-26 14038 Lassen Haskell Parks range, Diaz Flat, ca. 5 mi. e. of Hayden Hill, n.w. Lassen Co. Comment
  UCR244051  Astragalus geyeri var. geyeri Jim Andre 1993-6-1 19721 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  RSA121850  Astragalus gibbsii E. Sawyer 1935-6-27 234 Lassen Long Valley 1341 Comment
  CAS-BOT-BC186863  Astragalus gibbsii H. D. Ripley; R. C. Barneby 1943-6-13 5692 Lassen South of Milford 1432 Comment
  RSA110068  Astragalus gibbsii H. D. Ripley, R. C. Barneby, F. C. Ripley Jr. 1944-5-29 5951 Lassen Constantia 1372 Comment
  CAS-BOT-BC27652  Astragalus inversus Townsend Stith Brandegee 1892-7-1 s.n. Lassen Susanville Comment
  RSA0006769  Astragalus inversus H. D. Ripley, R. C. Barneby 1943-6-14 s.n. Lassen West of Susanville. Comment
  POM23664  Astragalus iodanthus Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  CHSC64785  Astragalus iodanthus var. diaphanoides Vernon H. Oswald 1995-5-24 6763 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. 1249 Comment
  SEINET5324147  Astragalus iodanthus var. iodanthus A. Tiehm 1980-1 5755 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1231 Comment
  POM45790  Astragalus lemmonii Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  UC13384  Astragalus lemmonii M. S. Baker and F. Nutting 1894-7-2 Lassen Dixey Mts. Comment
  RSA0028050  Astragalus lentiginosus John F. Emmel 1996-7-14 1424 Lassen North base of Ft. Sage Mts., south edge of Honey Lake Valley; gently sloping sandy flats 0.2-0.3 air mile north and 0.15-0.3 air mile east of 4818 ft. peak of Turtle Mtn. 1280 Comment
  CAS-BOT-BC187155  Astragalus lentiginosus var. chartaceus H. D. Ripley; R. C. Barneby 14 Jun. 5744 Lassen Hidden Valley E of Susanville 1310 Comment
  POM25710  Astragalus lentiginosus var. floribundus Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  JEPS114628  Astragalus lentiginosus var. lentiginosus Lowell Ahart, John Dittes 2008-6-22 15046 Lassen Open meadow, east of the old barn, east of the dirt road, open meadow area, in Big Valley, about 4.7 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.7 miles (air) northeast of Bieber 1268 Comment
  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
  POM45581  Astragalus malacus Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  CAS-BOT-BC192841  Astragalus pulsiferae Marcus E. Jones 1897-6-18 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC192845  Astragalus pulsiferae Margaret Williams; Steven Williams 1974-7-26 74 -L-16 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  JEPS87063  Astragalus pulsiferae Dean Wm. Taylor with Glenn Clifton 1990-6-12 10877 Lassen ca 0.5 mi before the Modoc County Line (road from Adin to Ash Valley (Forest Road 88)); Modoc Plateau, road from Adin to Ash Valley 1554 Comment
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Jan 31 2015
  SEINET948657  Astragalus pulsiferae John Thomas Howell 1955-1 30818 Lassen East side of Beckwourth Pass. Sierra Nevada 1494 Comment
  UC1128861  Astragalus pulsiferae E. Sawyer 1935-6-27 237 Lassen Long Valley Sierraville Quad., Long Valley Comment
  JEPS107291  Astragalus pulsiferae var. pulsiferae Lowell Ahart, John Dittes 2005-6-1 11871 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
  NY694127  Astragalus pulsiferae var. pulsiferae See comments 1981-6-23 614 Lassen West of Susanville 1463 Comment
  POM24228  Astragalus pulsiferae var. pulsiferae Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1616 Comment
  RSA339984  Astragalus pulsiferae var. pulsiferae Noel Holmgren, Patricia K. Holmgren 1980-7-4 9500 Lassen Observation Peak, south side of mountain, 18 km (11 mi) airline distance east of Ravendale. 1890 Comment
  SEINET5324389  Astragalus pulsiferae var. pulsiferae M. J. Williams 1974-7-26 74 L-16 Lassen 2 mile W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  CHSC98310  Astragalus pulsiferae var. suksdorfii R. Ondricek-Fallscheer 1999-7-14 206 Lassen 6 1/2 air mi W of Crater Mtn. and 7 1/2 air mi ENE of Lassen Volcanic Natl. Park; 0.3 road mi S of Hwy 44 on USFS Rd. 32N60. 1706 Comment
  HSC36246  Astragalus purshii John Rehling 1975-5-15 78 Lassen Along Hwy. 395 just before the turnoff to Janesville Comment
  JEPS107439  Astragalus purshii var. purshii Lowell Ahart, John Dittes 2005-6-1 11870 Lassen On the east side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  CAS-BOT-BC194091  Astragalus purshii var. purshii Ellsworth Bethel 1923-5-24 s.n. Lassen Poison Lake Comment
  CAS-BOT-BC194095  Astragalus purshii var. purshii Clare B. Hardham 1978-4-20 21588 Lassen North west edge of Susanville Comment
  CHSC68747  Astragalus purshii var. tinctus Vernon H. Oswald; Lowell Ahart 1997-5-27 8517 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat) 2.6 mi northeast of Hwy. 139. 1682 Comment
  POM45166  Astragalus purshii var. tinctus T. S. Brandegee 1892-6-23 s.n. Lassen Honey Lake Comment
  UC584308  Astragalus whitneyi G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2275 Lassen sw Diamond Mt. (s of Susanville); sw of Diamond Mt., s of Susanville 2164 Comment
  UCD105481  Astragalus whitneyi B. L. Kay 1961-6-28 s.n. Lassen 6 miles northwest of Madeline. Comment
  JEPS94456  Astragalus whitneyi var. confusus Vernon Oswald and Lowell Ahart 1997-6-24 8634 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
  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
  SEINET12162056  Astragalus whitneyi var. confusus J. Vale, Wagnon, K.; Knight, W.; Knight, I. 1981-1 4136 Lassen ca 3mi S of Adin on hwy.139 1372 Comment
  UC1567401  Astragalus whitneyi var. whitneyi G. Schoolcraft 1989-6-19 1915 Lassen Ash Valley RNA/ACEC 1554 Comment
  CDA23253  Atriplex confertifolia Robin Breckenridge 2007-5-1 PDR# 1349824 B Lassen Wendel. 0 Comment
  UC1537376  Atriplex confertifolia Gordon H. True Jr. 1936-6-24 520 Lassen n shore Honey Lake (Honey Lake Valley); n shore Honey Lake, Honey Lake Valley 1219 Comment
  UC527347  Atriplex confertifolia C. B. Wolf 1931-9-5 2402 Lassen on road to Doyle 1/2 mi from Amedee R.R. station (Honey Lake Valley); , 1/2 mi from Amedee R.R. station Comment
  UC768839  Atriplex gardneri var. falcata R. F. Hoover 1940-10-5 4677 Lassen alkali plain s Secret Valley; s of Secret Valley Comment
  SEINET515855  Atriplex gmelinii Vernon H. Oswald 1998-9-8 9581 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.) 1259 Comment
  JEPS95903  Atriplex prostrata Lowell Ahart 1999-9-13 8209 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
  RSA518558  Atriplex rosea George K. Helmkamp 1990-9-23 H- 7 Lassen N of Ravendale 1677 Comment
  CHSC76274  Atriplex triangularis Lowell Ahart; Vernon Oswald 1999-9-13 8209 Lassen On the edge of a flooded field 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
  UCD129522  Balsamorhiza hirsuta G. Schoolcraft 2000-4-26 2891 Lassen Susanville, 1.8 miles west of Hwy 395 on Shaffer Mountain Road. 1554 Comment
  CHSC7646  Balsamorhiza hookeri Beverly J. Wise 1969-4-17 14 Lassen 1 mi north on Hwy 139. 1341 Comment
  UC1137702  Balsamorhiza hookeri A. Simontacchi 1940-5-27 790 Lassen 1.1 mi sw of Dixie Spring (Halls Flat); Halls Flat 1699 Comment
  UCD159570  Balsamorhiza hookeri D. S. Park 2011-6-27 307 Lassen East of Westwood. Growing near Willard Creek. 1471 Comment
  UCD129528  Balsamorhiza macrolepis Tom Vestal DVM 2002-5-23 s.n. Lassen south of Modoc National Forest Boundary along Little Valley Rd., NNE of Catfish Reservoir. Comment
  CHSC67422  Balsamorhiza macrolepis var. platylepis James D. Jokerst 1991-5-29 3300 Lassen Modoc Plateau. Survey for reroute of Hwy. 139 at the N end of Eagle Lake, top of plateau E of N basin, W of N-S oriented dirt road. 1737 Comment
  UC485131  Balsamorhiza sagittata Franklin P. Nutting Lassen Big Valley Mts. 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
  JEPS114368  Barbarea orthoceras Lowell Ahart, John Dittes 2008-6-20 14949 Lassen In meadow, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  UCD97537  Bassia hyssopifolia E. K. Balls; P. C. Everett 1952-10-10 18137 Lassen 0.7 mi. e. of Standish, Hwy. 395, between Susanville and Alturas. 1249 Comment
  JEPS114766  Beckmannia syzigachne Lowell Ahart, John Dittes 2008-6-20 14946 Lassen In swales, about 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  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
  SJSU9993  Beckmannia syzigachne C. L. Kline 1965-7-13 195 Lassen 1.8 mi E of Nubieber on Highway 299 2493 Comment
  UC37443  Beckmannia syzigachne M. S. Baker and Frank Nutting 1894-7-6 Lassen Dixey Valley Comment
  UC573777  Beckmannia syzigachne H. S. Yates 1936-8-11 6078 Lassen 2 mi ese Susanville; Susanville Quadrangle 1280 Comment
  RSA713604  Berteroa incana A. Tiehm 2005-7-14 15023 Lassen Long Valley. Anderson (Saralegui) Ranch. 2.2 road miles W of highway 395 on Highway 70, then 5.5 road miles N on Scott Road. 1494 Comment
  JEPS113921  Berteroa incana William Harnach 2006-5-31 1229 Lassen Approx 5.5 north of Hwy 70 on Scott Road (Anderson Ranch). 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-BC128033  Blepharipappus scaber Clare B. Hardham 1961-6-16 7451 Lassen Gold Run Creek south of Susanville Comment
  CAS-BOT-BC128040  Blepharipappus scaber Elmer I. Applegate 1934-5-4 8922 Lassen Sagebrush plains at south end of Secret Valley Comment
  CAS-BOT-BC128044  Blepharipappus scaber John Thomas Howell 1934-6-10 11894 Lassen Horse Lake Comment
  CAS-BOT-BC128048  Blepharipappus scaber A. M. Vollmer; L. Beane 1953-7-1 99 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  JEPS94612  Blepharipappus scaber Vernon H. Oswald and Lowell Ahart 1997-5-27 8484 Lassen e side of Hwy 139 at a small farm pond 38.2 mi n Susanville (7.4 mi n of Eagle Lake Rd.) 1627 Comment
  POM204103  Blepharipappus scaber J. T. Howell 1934-6-10 11894 Lassen Horse Lake Comment
  POM223583  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3733 Lassen 2 miles south of Ravendale. 1463 Comment
  UC194505  Blepharipappus scaber unknown 1878-4-1 Lassen Madeline Plains Comment
  OBI48164  Blepharipappus scaber Rhonda Riggins 1989-4-27 1640 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  RSA603799  Blepharipappus scaber D. D. Keck, Jens Clausen 1935-6-24 3725 Lassen 5 miles south of Likely. 1402 Comment
  SEINET7379359 Image available Blepharipappus scaber subsp. scaber J. A. Young 1982-6-9 s.n. Lassen Myers Ranch, Adin 1372 Comment
  JEPS53205  Boechera Leland S. Smith 1918-5-11 924 Lassen Hayden Hill Modoc Forest Comment
  CHSC25300  Boechera puberula Pauleen Broyles 1977-5-30 143 Lassen Spencer's Basin ca 8 km n of Herlong. 1770 Comment
  CHSC11772  Boechera retrofracta Wayne O. Baum 1971-6-28 71 -10 Lassen East slope of Gallatin Peak. 1950 Comment
  CHSC91294  Boechera retrofracta Lowell Ahart; John Dittes 2005-6-2 11926 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
  SEINET3165698  Boechera retrofracta R. W. Spellenberg 2006-6-19 13743 Lassen along a USFS access road 2 km E of Calif. Hwy 139, the junction of road and highway 31 km SE of Modoc Co. line (just S of Adin) 1715 Comment
  CHSC40528  Boechera sparsiflora J. D. Jokerst 1983-5-30 1797 Lassen West of Ash Valley along the SW side of the road to Knox Mt ca 1 mile north of its junction with the road that connects Aden and Madeline. Comment
  CHSC99127  Boechera sparsiflora Lowell Ahart; John Dittes 2008-6-19 14885 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  UC1126562  Boechera sparsiflora H. P. Hagge 1929-9-19 40 Lassen Logan Mtn. Eagle Lake Quad. 1828 Comment
  RSA41170  Boisduvalia glabella Robert F. Hoover 1940-9-21 4602 Lassen 4 miles west of Susanville Comment
  RSA772655  Boisduvalia glabella Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47214 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  UC2046019  Bolboschoenus maritimus subsp. paludosus Nick Otting, Carex Working Group 2003-7-19 708 Lassen Modoc Plateau, Biscar Reservoir, 19 air miles northeast of Susanville. Comment
  SD8418  Boykinia major Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  RSA210962  Brickellia grandiflora James Henrickson 1969-9-4 4268 Lassen 4 miles south of Westwood along Highway 147. Along dirt road into forest along small river. 1390 Comment
  SEINET8193957  Brodiaea congesta J. A. Young 1978-4-13 s.n. Lassen Meyers Ranch. Comment
  SEINET201569  Brodiaea coronaria subsp. coronaria Arthur Cronquist 1959-6-18 8485 Lassen 5 miles south of Adin Comment
  UC60846  Bromus M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Mountains Comment
  CAS-BOT-BC149498  Bromus briziformis Louella Bass 1982-6-20 s.n. Lassen 0.5 mile west of Karls. Comment
  CHSC30560  Bromus briziformis Sori H. Shad 1970-7-1 10 Lassen 4 miles N.E. of Hiway 139. 1524 Comment
Read comments
Jun 19 2008
  CHSC80306  Bromus briziformis Jeanne Boze 1981-6-11 101 Lassen About 4 m from road, back from Horse Lake Road, 5.5 mi from Hwy 139. 1676 Comment
  GMDRC7732  Bromus briziformis J. M. Andre, G. Clifton 1993-6-1 33409 Lassen Modoc Plateau: along US Hwy 395 at Viewland, approx 8 mi. ENE of Litchfield, 20 mi. NE of Susanville, east side of Shaffer Mtn 1399 Comment
  UCD57495  Bromus briziformis Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen Few miles north of Litchfield. Comment
  CAS-BOT-BC149580  Bromus carinatus var. carinatus William Bridge Cooke 1938-6-24 11062 Lassen Mount Shasta. MacBride Spring. 1524 Comment
  CAS-BOT-BC149584  Bromus carinatus var. carinatus John Thomas Howell 1973-7-10 49778 Lassen Sierra Nevada. Fredonyer Pass. 1737 Comment
  UC1136818  Bromus carinatus var. carinatus L. R. Short and J. Warren 1936-6-29 S 460 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1820 Comment
  UCD32659  Bromus carinatus var. marginatus Beecher Crampton 1954-7-5 2055 Lassen Lassen County, 4.5 miles west of Susanville, along state highway 36. 1432 Comment
  UCD59104  Bromus carinatus var. marginatus A. A. Beetle 1941-6-28 2802 Lassen 10 miles W of Chester. 1524 Comment
  POM115036  Bromus catharticus Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin's Ranch. 1463 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
  UCD58467  Bromus commutatus Beecher Crampton 1954-7-5 2056 Lassen Along Hwy. 36. 4.5 miles west of Susanville. Comment
  UC1024715  Bromus hordeaceus Leo Whitney 1935-5-20 3098 Lassen 14 mi w of Eagle Lake (Lassen National Forest, Harvey Valley, near dam); Lassen National Forest, Harvey Valley 1737 Comment
  CHSC31983  Bromus tectorum L. Ahart; J. T. Howell 1974-7-9 535 Lassen Along the rd 4.5 mi w of Susanville. 1584 Comment
  RSA152589  Bromus tectorum I. L. Wiggins, Dorothy Wiggins 1961-6-11 16341 Lassen 13.5 mi. E. of Susanville Comment
  UC1131267  Bromus tectorum H. S. Yates 1936-8-12 6085 Lassen McKenzie Meadow 1524 Comment
  UC1131326  Bromus tectorum A. Simontacchi 1940-6-8 835 Lassen Lassen National Forest, Halls Flat Ranger Station Halls Flat Ranger Station; Lassen National Forest, Halls Flat Ranger Station 1706 Comment
  UCD59851  Bromus tectorum L. Whitney 1933-8-8 s.n. Lassen Lassen National Forest. 1920 Comment
  UC1142960  Calamagrostis stricta subsp. inexpansa A. L. Hormay 1941-6-26 29 Lassen Westwood Junction Lassen National Forest 1737 Comment
  JEPS124786 Image available Callitriche palustris B. Corwin 1964-7-1 124 Lassen Under bridges between Bieber and New Bieber on rte. 299. Comment
  JEPS88592  Callitriche verna Vernon H. Oswald and Lowell Ahart 1996-6-24 7870 Lassen 2.5 mi s Eagle Lake (and 0.5 mi e of Eagle Lake Rd (A1), along Papoose Creek where it leaves the n end of the meadow, Papoose Meadows); Modoc Plateau, Papoose Meadows, Papoose Creek 1633 Comment
  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
  CHSC23521  Calochortus leichtlinii Wayne O. Baum 1971-7-6 71 -29 Lassen S. slope of Gallatin Peak. 2042 Comment
  CHSC4921  Calochortus leichtlinii L. G. Bennett 1967-6-24 24 Lassen 0.5 miles from start of road 5.19 towards Murrers Meadow, near Eagle Lake. 1493 Comment
  CHSC67072  Calochortus leichtlinii Willis Ball 1969-6-20 15 Lassen Found approx. 1 mile S. E. of E. L. B. S. about 50 ft. off the dirt road to the station. 1584 Comment
  UC423015  Calochortus leichtlinii Franklin P. Nutting Lassen Pine Creek Comment
  UC843660  Calochortus leichtlinii A. A. Heller 1938-6-23 15200 Lassen e of Fredonyer Pass Comment
  CAS-BOT-BC487963  Calochortus leichtlinii T. S. Brandegee 1892-7-2 s.n. Lassen Susanville Comment
  JEPS124668 Image available Calochortus leichtlinii Laurel Loeblich 1964-6-30 59 Lassen Highway 139 8.7 miles north of Susanville. Comment
  RSA377380  Calochortus leichtlinii Christopher Davidson 1974-7-25 2498 Lassen Lassen Volcanic National Park, road to Juniper Lake 2134 Comment
  CDA39286  Calochortus macrocarpus L. E. Wheeler 1967-7-25 s.n. Lassen H. Boswell property, Madelaine. 0 Comment
  POM109600  Calochortus macrocarpus Marcus E. Jones 1897-7-1 s.n. Lassen Susanville at Perkins Ranch 1524 Comment
  SEINET188321  Calyptridium umbellatum C. L. Hitchcock 1940-5-26 6608 Lassen Ca 12 mi N of Fall River Mills (Shasta Co) on Fall River 1372 Comment
  UC1537347  Calyptridium umbellatum Gordon H. True Jr. 1936-6-25 534 Lassen Hall's Valley 1524 Comment
  UC773930  Calystegia occidentalis subsp. occidentalis L. R. Short and Wm. Gansberg 1936-7-3 S- 469 Lassen Lassen Forest , Lassen <National> Forest (Burgess Spring Experiment Range) 1848 Comment
  OBI75874  Camassia quamash Anthony Baniaga 2011-6-7 312 Lassen Lassen Natl Forest. NW area of Grays Valley, just S of intersection of 33N11 and 32N 83Y. Poison Lake quad T32N R7E sec 11 SW of NE 1747 Comment
  CAS-BOT-BC497552  Camassia quamash subsp. breviflora John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49223 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC20416  Camassia quamash subsp. quamash K. R. Stern 1967-6-25 2431 Lassen On road to Eagle Lake Biological Station, ca. 7 mi. S of Eagle Lake. 1828 Comment
  CDA39275  Camassia quamash subsp. quamash G. D. Barbe, Phyllis Hiatt, Mike Keffer 1980-6-4 2797 Lassen Secret Creek drainage, west side of Highway 395 at the foot of basaltic Saddle Rock, 15 miles (24.1 km) south of Ravendale. 0 Comment
  SEINET8197883  Camassia quamash var. breviflora J. A. Young 1982-6-9 s.n. Lassen Meyer's Ranch, Adin. 1372 Comment
  NY661118  Camelina microcarpa G. Schoolcraft 2000-5-24 2896 Lassen Near Ducasse Reservoir south of Termo, CA. 1645.9 Comment
  NY850976  Camissonia boothii subsp. alyssoides W. W. Eggleston 1911-7-7 7176 Lassen Secret Valley 1330 Comment
  POM39324  Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  RSA294814  Camissonia boothii subsp. alyssoides Arnold Tiehm 1980-5-29 5754 Lassen North end of Honey Lake Valley, 2 air miles NW of Wendel. 1232 Comment
  SEINET3282784 Image available Camissonia boothii subsp. alyssoides Marcus E. Jones 1897-6-23 Lassen Amedee. 1219 Comment
  HSC69590  Camissonia claviformis subsp. cruciformis Gary Schoolcraft 1980-5-16 235 Lassen Behind kiln oven on Wendel Hwy. 1280 Comment
  RSA0021212  Camissonia claviformis subsp. cruciformis P. A. Munz 1947-5-19 11870 Lassen 19 miles south of Ravendale. 1341 Comment
  POM38345  Camissonia contorta Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  NY851343  Camissonia contorta LeDoux 1973-5-25 870 Lassen Collected 3 miles north of Milford on Hwy 395 at Honey Lake campgrounds Comment
  RSA74347  Camissonia subacaulis Milo S. Baker 1952-5-23 12418 Lassen Wet Spot, E of Chester, Hwy 36. Comment
  HSC16514  Camissonia tanacetifolia K. P. St. John 1965-5-6 29 Lassen 6 mi. N of Litchfield on Hwy. 395 Comment
  RSA125385  Camissonia tanacetifolia Arthur R. Kruckeberg 1954-6-22 3322 Lassen 6 miles south of Likely along Highway 395 Comment
  CAS-BOT-BC160871  Camissonia tanacetifolia subsp. tanacetifolia Peter H. Raven; Otto T. Solbrig 1958-6-17 13264 Lassen Along United States Highway 395, 11.8 miles north-east of LItchfield Comment
  CAS-BOT-BC160875  Camissonia tanacetifolia subsp. tanacetifolia Noel H. Holmgren; Patricia K. Holmgren 1980-7-3 9477 Lassen Madeline Plains, a valley road 1.1 km (0.7 mi) west of US Highway 395 from a turnoff 10.3 km (6.4 mi) south of Madeline 1620 Comment
  CAS-BOT-BC282942  Canadanthus modestus B. Bartholomew; B. Anderson 1988-7-22 4499 Lassen Mosquito Creek ca 2 km SW of Patterson Meadow, S end of the Warner Mountains 2080 Comment
  CAS-BOT-BC37244  Cardamine breweri John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49478 Lassen Sierra Nevada. Elysian Valley, west of Janesville. 1325 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
  CDA3650  Cardaria draba G. D. Barbe, P. Hiatt, M. Keffer 1980-6-4 2801 Lassen 7.2 miles (11.6 km) north of Termo, 7.1 miles south of Madeline, east side of Madeline Plain. Comment
  CAS-BOT-BC18285  Carex John Thomas Howell 1975-7-23 51408 Lassen Sierra Nevada. Along Highway 395 between Johnstonville and Janesville. 1280 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
  SEINET7550662 Image available Carex athrostachya L. P. Janeway 2004-6-26 8158 Lassen High Cascade Range. At Patterson Well in Patterson Flats; Black Mountains Experimental Forest. Poison Lake 7.5' quad. 1767 Comment
  UC1748339  Carex disperma L. P. Janeway 1999-9-5 6575 Lassen NW corner of Upper Stephens Meadow (Upper Pine Creek near Stephens Camp); High Cascade Range 1900 Comment
  CHSC68771  Carex douglasii Vernon H. Oswald; Lowell Ahart 1997-5-27 8519 Lassen Williams Reservoir on Forest Route 38N04 (between Hwy. 139 near Willow Creek Guard Station and Coyote Flat), 2.6 mi northeast of Hwy. 139. 1682 Comment
  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
  SEINET10823343  Carex douglasii Gordon H. True 1939-6-15 True 996 Lassen Bullard Lake west of Grasshopper Valley. Comment
  HSC95229  Carex echinata subsp. echinata Gordon Leppig, Tony LaBanca 1997-6-28 517 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC19917  Carex epapillosa L. S. Smith 1918-8-11 1018 Lassen Modoc Forest. Trail to Lost Lake-T38-16. 2438 Comment
  JEPS118277  Carex filifolia var. erostrata Lowell Ahart, John Dittes 2011-6-20 17501 Lassen About 40 yards west of the stream, about 50 yards northwest of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin 1520 Comment
  JEPS87492  Carex filifolia var. erostrata Vernon H. Oswald and Lowell Ahart 1993-6-3 5472 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02) 1.8 mi n Hwy. 44 (between Poison Lake and Susanville) 1725 Comment
  CAS-BOT-BC20164  Carex filifolia var. erostrata Lassen 1927 G. S. Crew 1927-7-15 60 Lassen Lassen Forest. 1691 Comment
  UCD140321  Carex filifolia var. erostrata Beecher Crampton 1960-6-20 5739 Lassen Harvey Valley, 6 miles north Bogard Ranger Station, Lassen National Forest. 1676 Comment
  HSC103621  Carex heteroneura Thomas W. Nelson, Jane Nelson 1985-8-10 8024 Lassen Silver Lake, along north side of arm on east side of lake. 1829 Comment
  SEINET7561726 Image available Carex hoodii L. P. Janeway 2003-7-24 7917 Lassen Swain Mountain 7.5' quad. High Cascade Range. Along Forest Service Road 30N14. 1.1 km from Road 30N21, small side drainage of upper Susan River 4.7 (air) km west of Clover Valley. 1932 Comment
  UC1133501  Carex integra A. Simontacchi 1940-5-14 720 Lassen 4.1 mi wnw Aspen Well; Lassen National Forest, Halls Flat Quadrangle Comment
  HSC103653  Carex lenticularis var. limnophila Thomas W. Nelson, Jane Nelson 1985-8-10 8010 Lassen Along north side of Silver Lake 1829 Comment
  CHSC76848  Carex lenticularis var. lipocarpa L. P. Janeway; Loren Gehrung 1999-10-9 6594 Lassen High Cascade Range. In southwestern arm of Caribou Lake, 1995 Comment
  CHSC97050  Carex limosa Gordon Leppig; J. Cromwell 1997-7-27 610 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  SEINET7568445 Image available Carex multicaulis L. P. Janeway 2001-6-20 7207 Lassen Coble Mountain 7.5' Quad. 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
  CHSC29957  Carex multicostata Robin L. Ondricek 1978-6-27 78 Lassen On Coleman Lake Rd., .7 mi ne of Lassen Co. Rd. A1. 1950 Comment
  CHSC110970  Carex nebrascensis Lowell Ahart; John Dittes 2012-7-9 18298 Lassen Scattered along a small drainage, about 150 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northest of Bieber, Big Valley. 1267 Comment
  CHSC66411  Carex nebrascensis Vernon H. Oswald; Lowell Ahart 1996-6-17 7813 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the edge of the trail at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  CHSC96455  Carex nebrascensis Gordon Leppig 1998-8-17 1053 Lassen Modoc National Forest. Blue Lake Ranch. 1970 Comment
  CHSC98668  Carex nebrascensis Thomas W. Nelson; Jane P. Nelson 1985-8-10 8019 Lassen In lake side bog along north side of Silver Lake. 1828 Comment
  HSC103614  Carex nebrascensis Thomas W. Nelson, Jane Nelson 1985-8-10 8005 Lassen Along north side of Silver Lake 1829 Comment
  SEINET13407108  Carex pellita G. Schoolcraft 1995-7-11 2504 Lassen Along Silver Creek 1768 Comment
  UC1133448  Carex petasata Robert W. Gardner 1939-6-28 G- 32 Lassen Burgess Spring Experimental Range, Halls Flat Quadrangle Burgess Spring Experimental Range Comment
  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
  JEPS107839  Carex praegracilis Lowell Ahart, John Dittes 2005-6-1 11859 Lassen on the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction Comment
  CAS-BOT-BC118402  Carex praegracilis G. Schoolcraft 1987-5-5 1695 Lassen Along shore of Eagle Lake near Stone Ranch. 1554 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
  JEPS109091  Carex preslii D. W. Taylor 2008-6-19 20226 Lassen Unnamed meadow equidistant between Papoose Meadwo and Mahogany Lake Comment
  HSC48222  Carex rossii D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19175 Lassen Harvey Valley near Cone Springs 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
  HSC95227  Carex simulata Gordon Leppig 1998-7-12 953 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CAS-BOT-BC117018  Carex straminiformis Clare B. Hardham 1971-8-22 18423 Lassen Diamond mountain. Comment
  HSC97395  Carex straminiformis L. P. Janeway 2003-7-24 7917 Lassen High Cascade Range, along FS 30N14, 1.1 km from FS 30N21, upper Susan River, 4.7 mi. W of Clover Valley 1932 Comment
  CAS-BOT-BC116620  Carex subfusca George Wilson Gillett 1957-7-26 911 Lassen East Shore of Butte Lake, along water line. 1844 Comment
  CAS-BOT-BC116624  Carex subfusca John Thomas Howell 1973-7-10 49779 Lassen Fredonyer Pass. 1737 Comment
  SEINET13720729  Carex subfusca B. L. Wilson, P. Zika 2011-8-7 16801 Lassen Where route A21 corsses the railroad tracks north of Westwood. 1607 Comment
  CAS-BOT-BC116609  Carex subfusca Hans Leschke 1954-7-5 s.n. Lassen Hat Lake 1965 Comment
  RSA220022  Carex whitneyi Beecher Crampton 1964-6-26 s.n. Lassen Ca. 4 miles SSE Bogard Ranger Station, Lassen National Forest. Comment
  UCD123074  Castilleja Grady L. Webster 1989-5-13 7711 Lassen 2.5 miles E of Beckworth Pass. 1493 Comment
  CAS-BOT-BC248971  Castilleja Margaret M. Hanna 1956-6-3 943 Lassen 2 mi. West of Nubieber Comment
  CHSC93559  Castilleja angustifolia Lowell Ahart; John Dittes 2005-6-2 11978 Lassen Long Valley, north side of a poor dirt road, about 4 1/2 miles (air) northeast of the interesection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
Read comments
Oct 20 2009
  JEPS79146  Castilleja angustifolia L. R. Heckard with R. Bacigalupi 1980-6-11 5249 Lassen about 8 mi ne Litchfield (along U.S. Hwy 395) 1371 Comment
  JEPS94129  Castilleja angustifolia Vernon H. Oswald and Lowell Ahart 1998-5-22 9108 Lassen ca. 5 mi. n.-n.e. Doyle (rd. to ORV parking area in Fort Sage Mts., 0.5 mi. e. of Fort Sage Rd.); Fort Sage Mts. 1371 Comment
  CHSC36484  Castilleja applegatei subsp. pinetorum Margaret E. Halloran 1982-6-3 5 Lassen 3 1/2 mi s of jct of forest service roads 5.16 and 5.17. Comment
  JEPS107871  Castilleja applegatei subsp. pinetorum Lowell Ahart, John Dittes 2005-6-2 11929 Lassen Along the poor dirt road, about 1/4 mile west of the Anderson Ranch home, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.5 miles (air) northwest of Hallelujah Junction 1498 Comment
  JEPS128167  Castilleja applegatei subsp. pinetorum M. C. Mahoney, J. A. Nash 2017-9-9 CA 350 -90 Lassen Fredonyer Mountain. Comment
  OBI48148  Castilleja chromosa Rhonda Riggins 1989-4-27 1639 Lassen Wash through volcanic boulder pavement, US 395, 8.4 mi N Litchfield, 26.6 mi S Ravendale 1311 Comment
  CHSC117210  Castilleja lacera Lowell Ahart; John Dittes 2016-6-7 20993 Lassen West of pond, 110 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  UC103164  Castilleja lacera T. S. Brandegee 1892-6-30 Lassen Janesville Comment
  CDA41240  Castilleja lacera T. C. Fuller 1963-6-1 10631 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CHSC6268  Castilleja linariifolia P. Balch 1955-7-21 Lassen Willow Creek, Eagle Lake. 1463 Comment
  JEPS79327  Castilleja linariifolia T. C. Fuller 1980-8-5 20313 Lassen 7.4 km se Dodge Reservoir campground (along e side of Tuledad Road, on the e shore of Dodge Reservoir, ne of Ravendale) Comment
  RSA46749  Castilleja linariifolia J. T. Howell 1934-6-10 11885 Lassen 12 miles N of Susanville, on road to Horse Lake. Comment
  RSA18167  Castilleja miniata Carl B. Wolf 1929-9-1 3778 Lassen Mt. Lassen Nat'l Park, between Grassy Lake and Snag Lake. Comment
  UC485781  Castilleja miniata H. E. and S. T. Parks Jun 1928 250 Lassen Drakesbad; Lassen National Park Comment
  CAS-BOT-BC241002  Castilleja pilosa Doughitt; Parkison 1916-6-8 4 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  HSC26597  Castilleja pilosa D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19190 Lassen Harvey Valley near Cone Springs Comment
  HSC82214  Castilleja pilosa Thomas W. Nelson, Jane P. Nelson 1980-7-6 5995 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  JEPS74938  Castilleja pilosa T. I. and F. M. Chuang 1975-7-23 7551 Lassen just s Madeline (along Route 395) Comment
  RSA0037005  Castilleja pilosa Lowell A. Ahart, John Dittes 2008-6-19 14879 Lassen East bank of Willow Creek, about 30 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  POM43075  Castilleja psittacina Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  RSA59750  Castilleja psittacina E. K. Balls 1950-5-19 14778 Lassen 17.5 mi. W. of Madeline on rd. from Adin. 1677 Comment
  JEPS107826  Castilleja tenuis Lowell Ahart, John Dittes 2005-6-2 11962 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  JEPS121270  Castilleja tenuis Lowell Ahart 2013-7-22 18840 Lassen W margin of duck field, about 30 yards SE of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UC1137685  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen Forest 1743 Comment
  UC1143036  Castilleja tenuis L. R. Short and Wm. Gansberg 1936-6-8 S- 394 Lassen Burgess Spring Experimental Range; Lassen National Forest 1743 Comment
  CHSC29953  Caulanthus major Robin L. Ondricek 1978-6-8 46 Lassen Ridge E of Lower Dry Lake. 1767 Comment
  NY608460  Caulanthus major var. nevadensis N. H. Holmgren 1978-6-11 8923 Lassen Painters Flat road, 28.3 km (17.6 miles) east of Ravendale and 23.5 km (14.5 miles) airline distance. 1740 Comment
  NY608462  Caulanthus major var. nevadensis G. Schoolcraft 1982-7-6 758 Lassen Fort Sage Mountains 1981.2 Comment
  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
  UC1477727  Caulanthus major var. nevadensis Teresa Prendusi 1980-7-21 30 Lassen Fredonyer Peak 2377 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-BC49258  Ceanothus cuneatus Alice Eastwood; John Thomas Howell 1940-6-11 7993 Lassen Big Valley Mts. Comment
  CAS-BOT-BC52049  Ceanothus prostratus Barbara Shervanick 1974-5-7 1273 Lassen About 2 miles North of Milford on Highway 395, 1 mile Southwest of Honey Lake 1219 Comment
  CAS-BOT-BC52052  Ceanothus prostratus Milo S. Baker 1894-7-30 s.n. Lassen Near Silver Lake Comment
  CAS-BOT-BC52054  Ceanothus prostratus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16318 Lassen 2 miles E of Plumas-Lassen County line, along California Highway 36, near Westwood Comment
  CHSC107342  Ceanothus prostratus Lowell Ahart; John Dittes 2011-6-20 17496 Lassen Forest floor, about 40 yards west of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  RSA38478  Ceanothus prostratus P. A. Munz 1947-5-18 11864 Lassen Fredonyer Forestry Public Camp Ground, west of Susanville. 1509 Comment
  SEINET5339354  Ceanothus prostratus W. Priest 1956-4-27 s.n. Lassen 2 miles north of Susanville on US 395 1524 Comment
  CHSC91290  Ceanothus velutinus var. velutinus Lowell Ahart; John Dittes 2005-6-2 11943 Lassen Along a small stream, about 1 1/2 miles northeast of the Anderson Ranch home, Long Valley, about 6 miles (air) north of the intersection of Scott Road and Highway 70, 7.5 miles (air) northwest of Hallelujah Junction. 1601 Comment
  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
  CDA7251  Centaurea maculosa T. C. Fuller 1962-8-28 9472 Lassen West side of Highway 395, 1.7 miles south of Doyle. 0 Comment
  CDA7344  Centaurea squarrosa Loring White 1950-8-19 Lassen Cramer Ranch. Big Valley. 0 Comment
  UC1717201  Centaurea stoebe subsp. micranthos T. C. Fuller 1962-8-28 9472 Lassen w. side of Hwy 395, 1.7 mi. s. of Doyle Comment
  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
  UCD130125  Centaurea virgata subsp. squarrosa W. T. Parsons; T. C. Fuller 1960-7-26 4873 Lassen 4 miles north of Nubieber, 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
  JEPS102715  Centaurium exaltatum Vernon H. Oswald 2001-9-26 10057 Lassen Dakin Unit of Honey Lake Wildlife Area. 1219 Comment
  UC762592  Centromadia pungens subsp. pungens R. F. Hoover 1940-10-1 4657 Lassen between Janesville and Standish; Honey Lake Comment
  CHSC66722  Cerastium fontanum subsp. vulgare Vernon H. Oswald; Lowell Ahart 1996-8-1 8126 Lassen Forest Rd. 28N56 (D-Line) ca. 2 mi N of Dyer Mtn. Lookout, SSW of Westwood. On the downhill side of the road. 1737 Comment
  JEPS88403  Cerastium fontanum subsp. vulgare Vernon H. Oswald and Lowell Ahart 1996-8-1 8126 Lassen ca. 2 mi. n. Dyer Mt. Lookout (Forest Rd. 28N56 (D-Line), downhill side of rd., s.-s.w. of Westwood) 1737 Comment
  CHSC99741  Cerastium glomeratum Lowell Ahart; John Dittes 2008-6-20 14966 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7.0 miles (air) northeast of Bieber. 1263 Comment
  UC956834  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1947-7-9 13295 Lassen irrigation ditch 5 mi e Bieber Comment
  CAS-BOT-BC136988  Cercocarpus betuloides var. betuloides Alice Eastwood; John Thomas Howell 1940-6-11 7965 Lassen Eastern Fall River Valley Comment
  UCD35729  Cercocarpus ledifolius Beecher Crampton 1960-6-18 5710 Lassen Southern Warner Mountains, vicinity of Blue Lake Ranch. 1981 Comment
  CDA10715  Chaenactis douglasii var. achilleifolia T. C. Fuller 1959-7-7 Lassen Highway 395, 1.6 miles south of Ravendale. 0 Comment
  CAS-BOT-BC276614  Chaenactis douglasii var. douglasii Louella Bass 1978-7-11 78 -10 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC276618  Chaenactis douglasii var. douglasii John Thomas Howell 1934-7-8 12497 Lassen Spalding's Eagle Lake Comment
  CHSC105256  Chaenactis douglasii var. douglasii Lowell Ahart; John Dittes 2010-7-31 16984 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  POM31017  Chaenactis douglasii var. douglasii Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  RSA30268  Chaenactis xantiana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  SEINET10686163  Chamaebatia foliolosa Karen M. Meyer, Andrew Townesmith 2007-7-23 Meyer 149 Lassen Lassen National Forest. 6 miles SW on 32N10 off Hwy. 44. (Turn at rest area on Hwy. 44). At junction of 32N10, 32N09 and 31N36. 1993 Comment
  SBBG72342  Chamaebatiaria millefolium S. W. Hutchinson -Jun-1925 949 Lassen Eagle Lake 1554 Comment
  UC26091  Chamaesaracha nana M. S. Baker and Frank Nutting 1894-7-12 Lassen Pine Creek Comment
  HSC991  Cheilanthes gracillima H. E. Parks, S. T. Parks Jun 1928 262 Lassen Mt. Lassen National Park, Drakesbad 2134 Comment
  CHSC112973  Chenopodium album Lowell Ahart; John Dittes 2013-7-22 18859 Lassen Drainage filled with dirt from construction of a pond, about 30 yards south of the man made pond, about 120 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS121284  Chenopodium album Lowell Ahart 2013-7-22 18859 Lassen 30 yards S of a man-made pond, about 120 yards N of the four tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  UCD54572  Chenopodium glaucum Ellen Dean; Dawn Cunningham 2005-10-25 2755 Lassen E. of town of Susanville. Private property N of California Correctional Facility. Western side of property around large playa pond. 1248 Comment
  CHSC25311  Chenopodium leptophyllum Pauleen Broyles 1977-6-14 158 Lassen Skedaddle Ranch Road at South Fork Reservoir turn-off, ca 8 km ne of Herlong. 1660 Comment
  SEINET4171909  Chenopodium leptophyllum M. J. Williams 1974-7-26 74 -L-36 Lassen 2 miles west of Hallelujah Junction, south of HWY 70 1494 Comment
  CHSC29910  Chenopodium nitens Robin L. Ondricek 1978-7-15 97 Lassen In the middle of the dry section of Lower Dry Lake. 1645 Comment
Read comments
Nov 1 2014
  JEPS87185  Chenopodium nitens Vernon H. Oswald and Lowell Ahart 1992-7-16 5103 Lassen Long Lake on the S side of Hwy 44 between Oldo Station and Susanville, 1.2 mi SE of County Road A21. 1745 Comment
  JEPS95912  Chenopodium rubrum var. humile Lowell Ahart 1999-9-13 8215 Lassen 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
  CHSC45516  Chimaphila menziesii Lowell Ahart; John Thomas Howell 1974-7-9 538 Lassen On the south side of Eagle Lake Road, near the south edge of Eagle Lake. 1584 Comment
  POM77432  Chimaphila menziesii Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  CHSC23506  Chrysolepis sempervirens Wayne O. Baum 1971-7-8 71 -64 Lassen E. slope of Gallatin Peak. 1920 Comment
  UCSB62935  Chrysolepis sempervirens Sarr, Dan 1995-7-31 Lassen within crater of Crater Mountain 670 Comment
  SEINET8973626  Chrysolepis sempervirens W. Priest 1956-4-27 s.n. Lassen About 2 miles north of Susanville 1524 Comment
  SEINET7450659 Image available Chrysopsis villosa var. minor M. J. Williams 1974-7-29 74 -L-61 Lassen 2 mi. west of Hallelujah Junction, south of Hwy. 70. 1494 Comment
  CAS-BOT-BC106022  Chrysothamnus humilis R. K. Gierisch; D. H. Esplin 1969-8-27 3600 Lassen Lassen Forest 1706 Comment
  CDA10774  Chrysothamnus nauseosus subsp. albicaulis M. R. Pryor 1953-9-22 Lassen Stacey. 0 Comment
  CAS-BOT-BC100756  Chrysothamnus viscidiflorus subsp. puberulus G. Schoolcraft 1999-7-28 2872 Lassen Ridge on east end of Skedaddle Mtns. 2133 Comment
  CAS-BOT-BC100757  Chrysothamnus viscidiflorus subsp. puberulus Ralph K. Gierisch 1968-7-11 3349 Lassen Lassen National Forest, Harvey Valley 1676 Comment
  CAS-BOT-BC105903  Chrysothamnus viscidiflorus subsp. viscidiflorus Margaret Williams 1974-7-27 74 -L-56 Lassen Burned area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 - Sierra Nevada 1493 Comment
  RSA22626  Chrysothamnus viscidiflorus subsp. viscidiflorus Mary DeDecker 1955-8-25 263 Lassen Honey Lake: Highway 395. Comment
  UC761819  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-9-29 4644 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  UC761845  Chrysothamnus viscidiflorus subsp. viscidiflorus R. F. Hoover 1940-10-5 4664 Lassen Wendel Comment
  CAS-BOT-BC162753  Chylismia claviformis subsp. cruciformis G. H. True 1937-7-10 791 Lassen Skeedaddle Comment
  UC1567437  Chylismia claviformis subsp. cruciformis G. Schoolcraft 1989-5-16 1875 Lassen w Hwy 395 (ca 2 mi s of Karlo turnoff) 1356 Comment
  UC773847  Cirsium andersonii L. R. Short and D. Gish 1936-7-15 S- 489 Lassen Burgess Spring Experiment Range 1825 Comment
  UCD159574  Cirsium arvense D. S. Park 2011-6-27 311 -1 Lassen East of Westwood. Growing near Willard Creek. Comment
  CDA1124  Cirsium canescens T. C. Fuller 1966-7-22 14981 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  CAS-BOT-BC278012  Cirsium cymosum Peter H. Raven; Otto T. Solbrig 1958-6-17 13303 Lassen 8.0 miles north of Madeline along United States Highway 395 Comment
  CDA1167  Cirsium cymosum T. C. Fuller 1959-7-7 2763 Lassen Hwy 395; 1 mile north of Ravendale. 0 Comment
  CDA1169  Cirsium cymosum T. C. Fuller 1963-7-16 10921 -A Lassen West of Hwy 395; 14.3 miles south of Ravendale. 0 Comment
  SD113205  Cirsium cymosum Darley F. Howe 1964-7-31 3947 Lassen Near east bank of Blue Lake, Warner Mountains, Modoc National Forest. 1890 Comment
  JEPS30610  Cirsium cymosum var. cymosum Peter H. Raven with Otto T. Solbrig 1958-6-17 13279 Lassen 13.1 mi s Ravendale (along U.S. Highway 395) Comment
  RSA0070635  Cirsium inamoenum T. C. Fuller 1980-8-5 20312 Lassen North of the road, 0.4 km east of campground, east shore of Dodge Reservoir, 28 km (17.5 miles) northeast of Ravendale. Comment
  JEPS59279  Cirsium occidentale var. californicum W. L. Jepson 1918-8-4 7807 Lassen Horse Lake 1554 Comment
  SEINET3082769 Image available Cirsium occidentale var. candidissimum N. H. Holmgren, John J. Fay & Barton L. Bethers 1970-6-25 4377 Lassen North end of Petersen Mountain, near US 395, 8 miles north of junctin with Calif. 70 (Hallelujah Junction). 1524 Comment
  CDA1528  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14983 Lassen Madeline Plains 10 mi w. of Termo, 3 mi N of paved road. E of road at E base of Dry Valley Ridge, Madelaine Plains . Comment
  RSA186832  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen East of road at the east base of Dry Valley Ridge, Madelaine Plains, 3 miles north of paved road, 10 miles west of Termo. Comment
  CAS-BOT-BC280423  Cirsium ochrocentrum Lee Wheeler 1951-9-1 s.n. Lassen On Clarence Hoffman Ranch Comment
  CAS-BOT-BC280438  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14980 Lassen E. of rd. at the e. base of Dry Valley Ridge, Madelaine [Madeline] Plains, 3 mi. n. of paved road, 10 mi. w. of Termo Comment
  CDA1519  Cirsium ochrocentrum var. ochrocentrum Lee Wheeler 1952-8-29 s.n. Lassen Honey Lake Clarence Hoffman Ranch (near Janesville Grade/ Parker Creek?) 0 Comment
  CAS-BOT-BC286305  Cirsium scariosum John Thomas Howell 1934-7-6 12435 Lassen Harvey Valley Comment
  SBBG7961  Cirsium scariosum var. americanum H. and M. Dearing 1938-7-1 2242 Lassen W of Susanville Comment
  CHSC23510  Cirsium vulgare Wayne O. Baum 1971-7-6 71 -56 Lassen Slope of Gallatin Peak. 1981 Comment
  UC1037323  Cirsium vulgare Leo Whitney 1934-9-1 1888 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass 1706 Comment
  CHSC9542  Clarkia lassenensis A. W. Harvilik 1967-6-30 18 Lassen Collected near the junction of rd. 5.19 and the rd. to Murrer's Meadow. 1524 Comment
  CAS-BOT-BC163410  Clarkia purpurea subsp. quadrivulnera H. D. Ripley; R. C. Barneby 1943-6-13 5718 Lassen South of Johnstonville 1325 Comment
  CHSC59759  Clarkia rhomboidea Mary Meyer 1980-8-5 Lassen 2148 Comment
  CHSC6187  Clarkia rhomboidea W. Vinyard 1946-6-17 Lassen Mt. Fredonyer summit. Eagle Lake. 2421 Comment
  JEPS43672  Clarkia rhomboidea Jos. Grinnell 1928-6-16 Lassen Eagle Lake 1584 Comment
  UC773908  Clarkia rhomboidea L. R. Short and Wm. Gansberg 1936-7-3 S- 358 Lassen Burgess Spring Experiment Range Lassen Forest 1847 Comment
  CAS-BOT-BC439760  Claytonia rubra subsp. depressa John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49179 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CHSC99500  Claytonia rubra subsp. depressa Lowell Ahart; John Dittes 2008-6-20 14910 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1136745  Claytonia rubra subsp. rubra A. Simontacchi 1940-5-13 700 Lassen 7.8 mi wsw Cone Ranch Heights; Lassen National Forest, Halls Flat Quad. 1920 Comment
  JEPS17868  Cleome platycarpa Rimo Bacigalupi with G. T. Robbins 1955-7-21 5430 Lassen 8 mi e U.S. Hwy. 395 (along Smoke Creek Ranch road, se part of Secret Valley); Secret Valley 1402 Comment
  JEPS94360  Cleome platycarpa Vernon H. Oswald and Lowell Ahart 1997-5-7 8403 Lassen Smoke Creek Ranch Road 3.4 mi w of California-Nevada State Line; Smoke Creek Ranch Road 1420 Comment
  UC1567389  Cleome platycarpa G. Schoolcraft 1989-5-31 1891 Lassen e end Skedaddle Mtns. (near stateline) 1493 Comment
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Aug 12 2008
  NY242421  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just north of Hot Springs 1.1 air miles NNW of Wendel. 1231.4 Comment
  RSA294658  Cleomella parviflora A. Tiehm 1980-5-29 5748 Lassen North end of Honey Lake Valley, just N of Hot Springs 1.1 air mile NNW of Wendel. 1232 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
  CHSC108005  Collinsia parviflora Lowell Ahart; John Dittes 2011-6-20 17487 Lassen About 15 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC112413  Collinsia parviflora Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18737 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
  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
  JEPS107462  Collinsia parviflora Lowell Ahart, John Dittes 2005-6-1 11858 Lassen On the west side of the poor dirt road, about 1/2 mile west of Scott Road, Long Valley, about 2 miles (air) northwest of the intersection of Scott Road and Highway 70, 3.9 miles (air) northwest of Hallelujah Junction 1448 Comment
  JEPS120877  Collinsia parviflora Lowell Ahart, John Dittes, Todd Sloat 2013-6-8 18737 Lassen About 30 yards N of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 air miles NE of Bieber, Big Valley. Comment
  JEPS17613  Collinsia parviflora Rimo Bacigalupi with G. Thomas Robbins 1955-7-20 5406 Lassen 4.4 mi s Patterson Ranger Station (e edge of Long Valley Meadows, s end of Warner Mtns); Warner Mts., Modoc National Forest, Long Valley Meadows 2057 Comment
  JEPS94834  Collinsia parviflora Vernon H. Oswald and Lowell Ahart 1998-5-22 9126 Lassen 5 mi NE of Doyle (Road to summit of Fort Sage Mountains, 2.7 mi e of Fort Sage Road) 1463 Comment
  UC1032574  Collinsia parviflora K. Bradshaw 1939-5-27 229 Lassen Lassen National Forest, s end of Black Mountain Experimental Forest Black Mountain Experimental Forest; Lassen National Forest, Black Mountain Experimental Forest 1752 Comment
  RSA0117240  Collinsia parviflora L. R. Short 1936-5-7 S- 344 Lassen MDM, Burgess Spring Experiment Range. 1738 Comment
  HSC75886  Collinsia torreyi D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19258 Lassen Harvey Valley near Cone Springs Comment
  JEPS117587  Collomia grandiflora Lowell Ahart, John Dittes 2010-7-31 17002 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
  UC773904  Collomia grandiflora L. R. Short and J. Warren S- 362 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1844 Comment
  UC1924199  Collomia linearis Debra Valov 2005-8-20 2005229 Lassen Bieber; off County A2 c. 12 km east of Hwy 299 1279 Comment
  UC1981729  Collomia linearis Debra Valov 2010-7-17 2010102 Lassen Bieber, Lassen Co., CA;; off County Rs A2 c. 8.7 km east of Hwy 299. Comment
  UC1123658  Collomia tinctoria A. Simontacchi 1940-5-28 778 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC699727  Collomia tinctoria Farris Farris 1936-6-15 Lassen Diamond Mountain 1828 Comment
  RSA128290  Collomia tinctoria P. H. Raven, Otto T. Solbrig 1958-6-16 13255 Lassen Along State Highway 36, 0.9 miles east of summit of Fredonyer Pass Comment
  HSC95148  Comarum palustre Gordon Leppig 1998-7-12 934 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  CHSC71887  Consolida ajacis Vernon H. Oswald; Lowell Ahart 1998-9-8 9584 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Between the road and the marsh. 1258 Comment
  SEINET7127328  Convolvulus arvensis M. J. Williams 1974-7-29 74 -L-57 Lassen 2 mi. west of Hallelujah Junction, south of Highway 70 1494 Comment
  HSC23535  Convolvulus arvensis L. G. Bennett 1967-7-17 180 Lassen Murrers Meadow, near Eagle Lake 1494 Comment
  JEPS124870 Image available Convolvulus arvensis Laurel Loeblich 1964-6-30 56 -2 Lassen 3 miles north of Hallelujah Junction (highways 40 and 395) on 395. Great Basin flora; pinion pine - juniper- sagebrush. Comment
  JEPS121058 Image available Convolvulus occidentalis subsp. occidentalis Lynne C. Carter 1967-7-12 92 Lassen 6 miles east of Lassen + Shasta County line on Hwy 299, at Lookout over Fall River Valley. Comment
  CHSC6277  Corallorhiza maculata A. Santos 1946-7-11 Lassen Silver Lake. 1981 Comment
  JEPS17408  Cordylanthus kingii subsp. helleri Rimo Bacigalupi with G. T. Robbins 1955-7-21 5427 Lassen s Smoke Creek Ranch Rd. (1.3 mi w of Nevada Line, 17.5 mi e of US Hwy 395); draingage of Rush Creek 1341 Comment
  UC199366  Cordylanthus maritimus subsp. canescens J. Burtt Davy Jun 17 1897-Jun 24 1897 3345 Lassen Honey Lake Valley Comment
  UC26324  Cordylanthus maritimus subsp. canescens J. Burtt Davy Jun 17 1897-Jun 24 1897 3396 Lassen Amedee Honey Lake Valley Comment
  JEPS74320  Cordylanthus tenuis subsp. tenuis John Thomas Howell and Gordon H. True 1973-7-31 50019 Lassen on road from Janesville to Thompson Peak; Sierra Nevada, Diamond Range 1737 Comment
  CAS-BOT-BC212206  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  CAS-BOT-BC212207  Cornus sericea Philip A. Munz 1947-5-20 11887 Lassen Laufman Forestry Public Camp Ground above Milford 1524 Comment
  UC1122744  Cornus sericea subsp. sericea C. W. Hanks 1934-9-26 92 Lassen w. side Long Valley (near Plumas Nat'l Forest); Sierraville Quad., Long Valley Comment
  UC1118030  Crepis acuminata A. Simontacchi 1940-6-23 888 Lassen 3.3 mi sw Schoonamaker Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC64752  Crepis bakeri Vernon H. Oswald 1995-5-31 6796 Lassen Modoc Plateau. Smoke Creek Ranch Rd. 0.4 mi e of Hwy. 395, between Litchfield and Ravendale. 1383 Comment
  POM230908  Crepis intermedia G. Ledyard Stebbins, J. A. Jenkins 1937-7-10 2296 Lassen Crest of range head of Stony Ridge, west of Milford 1951 Comment
  UC1609226  Crepis modocensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5614 Lassen on Rd 33N06 n Hwy 44 (sse flank of mt., nne of Burgess Meadow, ne of Poison Lake); Harvey Mtn. 1798 Comment
  SEINET8513568 Image available Crepis occidentalis A. Rosenblum, A. Ortega, O. Schilling, M. Gray 2015-6-24 NV 030 -1092 Lassen Plumas Allotment, Highway 395 into California, first median crossing after check station, turn right, follow road right (South) take, 2nd left, follow uphill road bearing Southeast until reach gray metal gate, along roadside 1541 Comment
  UC581297  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-7 2196 Lassen Inspiration Point Susanville (just w of town) Comment
  UC581304  Crepis occidentalis G. L. Stebbins Jr. and J. A. Jenkins 1937-7-15 2352 Lassen sw-facing slope of mts. along hwy from McArthur to Bieber; Big Valley Mts. 1100 Comment
  SEINET7838805 Image available Crepis occidentalis J. A. Young 1982-6-9 s.n. Lassen Meyer's Ranch, Adin 1372 Comment
  UC581317  Crepis occidentalis subsp. costata G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2218 Lassen 6 mi s Ravensdale 1676 Comment
  CAS-BOT-BC290749  Crepis occidentalis subsp. occidentalis G. L. Stebbins, Jr.; J. A. Jenkins 1937-7-8 2218 Lassen Six miles south of Ravensdale 1676 Comment
  CAS-BOT-BC290750  Crepis occidentalis subsp. occidentalis Doris Kildale Gillespie 1930-5-12 9337 Lassen 2 miles north of Susanville on road to Alturas Comment
  CAS-BOT-BC376565  Crepis occidentalis subsp. occidentalis B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6566 Lassen U.S. Hwy 395 1.3 km S of railroad crossing and 12.9 km N of Litchfield 1330 Comment
  SEINET2142793 Image available Crepis occidentalis subsp. occidentalis Noel H. Holmgren, Holmgren, Patricia K. 1978-6-11 8929 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
  CDA4443  Crepis occidentalis subsp. pumila E. E. Fix 1956-6-18 Lassen Termo. 0 Comment
  CHSC93565  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
  UC296046  Crepis pleurocarpa E. B. Babcock and J. L. Collins 1926-7-21 89 Lassen 8 mi w Susanville (on hwy to Quincy) 1371 Comment
  CHSC67080  Cressa truxillensis Jeanne Boze 1981-6-11 106 Lassen Outer edge of Horse Lake, 11 1/2 mil. from 139 on Horse Lake Rd. 1539 Comment
  CHSC60650  Crocidium multicaule Vernon H. Oswald; Lowell Ahart 1993-4-17 5275 Lassen Near Wayman Barn at the W end of Hunt Rd., Ash Creek Wildlife Area, ca. 5 mi NE of Bieber. 1264 Comment
  CHSC76103  Crypsis schoenoides Lowell Ahart; Vernon H. Oswald 1999-9-13 8216 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
  UCD59992  Crypsis vaginiflora P. B. Kennedy 1915-9-1 s. n. Lassen Bieber. Comment
  CAS-BOT-BC189241  Cryptantha John Thomas Howell; Gordon H. True 1973-8-1 50215 Lassen E slope of Diamond Range, S of Susanville 2164 Comment
  SDSU20522  Cryptantha ambigua Nuri Benet-Pierce, John P. Pierce 2012-7-14 522 Lassen Between Poison Lake and Patterson Flats, in clearing by the rd, at the start to 35N08. 1724 Comment
  SJSU5810  Cryptantha intermedia J. W. Tilden 1958-6-27 1294 Lassen Madeline Comment
  SEINET8545993  Cryptantha intermedia var. grandiflora J. A. Young 1978-4-13 s.n. Lassen Adin, Meyers Ranch. Comment
  JEPS94701  Cryptantha pterocarya Vernon H. Oswald and Lowell Ahart 1998-5-22 9112 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains 0;.6 mi e of Fort Sage Road); Fort Sage Mountains 1402 Comment
  CHSC64766  Cryptantha pterocarya var. pterocarya Vernon H. Oswald 1995-5-24 6760 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. Slope at the base of the Amedee Mtns. 1280 Comment
  RSA123891  Cryptantha simulans G. A. Fischer, I. Johnson 1933-7-14 F- 260 Lassen Lassen Forest. 1784 Comment
  UC507028  Cryptantha simulans George A. Fischer and Irwin H. Johnson 1933-7-14 F- 260 Lassen Lassen Forest 1783 Comment
  JEPS90097  Cryptantha torreyana Dean Wm. Taylor with Robert A. Price 1988-6-4 9775 Lassen ca. 6 mi. e. MacArthur (along Hwy. 299 at crossing of Frazer Creek); Pit R. watershed, Fall R. Valley 1036 Comment
  UC526168  Cryptantha torreyana John Thomas Howell 1934-7-10 12546 Lassen Long's Well Comment
  NY1112083  Cryptantha watsonii B. J. Ertter 1987-6-16 7187 Lassen Skeedaddle Mountains on northeast side of Honey Lake, open rhyolitic ridge west of Hot Springs VABM 2134 Comment
  UCD54418  Cuscuta approximata Jerry Schmierer 1986-9-1 s.n. Lassen Don Blickenstaff Ranch. Comment
  NY674779  Cusickiella douglasii G. Schoolcraft 1988-6-7 1809 Lassen About 14 miles northeast of Ravendale, CA 1737 Comment
  RSA0049668  Cusickiella douglasii Dean Wm. Taylor 2012-5-15 21198 Lassen Hayden Hill Mine region, stony flats along the county road about 1 mile East of Snyder Waterhold 1722 Comment
  UC367201  Cycladenia humilis var. humilis J. G. Lemmon 1446 Lassen near Shasta (Black Cone); ; Black Cone, near Shasta Comment
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Feb 19 2015
  UC1133514  Cyperus squarrosus H. S. Yates 1936-8-11 6065 Lassen Baxter Creek Susanville Quad., Baxter Creek Comment
  POM121177  Cystopteris fragilis Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 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
  RSA323646  Damasonium californicum A. Tiehm, Gary Schoolcraft 1984-8-14 9245 Lassen Buckhorn Reservoir on the south side of Buckhorn road to Ravendale, about 6 road miles west of the state line. 1699 Comment
  CHSC61076  Danthonia californica var. americana Vernon H. Oswald; Lowell Ahart 1993-8-3 5755 Lassen Cooper Swamp located E of Silver Lake just E of the Caribou Wilderness, ca. 13 mi (air) N of Lake Almanor. 1932 Comment
  CHSC66420  Danthonia unispicata Vernon H. Oswald; Lowell Ahart 1996-6-17 7803 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  UC1136812  Danthonia unispicata L. R. Short and Wm. Gansberg 1936-6-8 S- 398 Lassen Burgess Spr. Exp. Range Lassen <National> Forest 1755 Comment
  UCD61329  Danthonia unispicata Beecher Crampton 1960-6-18 5721 Lassen Southern Warner Mtns., vicinity of Blue Lake Ranch. 1981 Comment
  CAS-BOT-BC141772  Dasiphora fruticosa John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50669 Lassen Cirque-like hollow ne. of Diamond Mt. - Sierra Nevada 2255 Comment
  CAS-BOT-BC291779  Deinandra lobbii John Thomas Howell 1934-7-3 12380 Lassen Big Valley near Bieber Comment
  HSC41628  Deinandra lobbii Barbara Kelly 1977-8-10 581 Lassen Along Adin Susanville Road, mileage marker 23.0, S of Adin Comment
  JEPS28461  Delphinium George W. Gillett 1957-7-21 864 Lassen Juniper Lake-Cameron Meadow trail 300 yd n trail summit; Lassen Volcanic National Park 2118 Comment
  CAS-BOT-BC1416  Delphinium andersonii L. B. Barlow 1967-6-23 1 Lassen Eagle Lake Biological Station, east central side of Eagle Lake 1554 Comment
  CAS-BOT-BC1424  Delphinium andersonii David Daniels Keck; J. Clausen 1935-6-24 3748 Lassen 2 mi. S of Ravendale 1464 Comment
  UC579715  Delphinium andersonii David D. Keck and J. Clausen 1935-6-24 3748 Lassen 2 mi s Ravendale 1464 Comment
  RSA0005300  Delphinium armeniacum A. A. Heller 1938-6-4 15149 Lassen 1 mile east of Fredonyer Pass on hwy 36. 1707 Comment
  HSC79826  Delphinium depauperatum William Rothstrom 1975-6-9 Lassen Near Day, 1.0 mi. E of large cinder pit mine 1280 Comment
  JEPS6109  Delphinium nudicaule A. A. Heller 1938-6-4 15149 Lassen E of Fredonyer Pass, Lassen Co. Comment
  RSA398661  Delphinium nudicaule Christopher Davidson 1975-6-6 2722 Lassen 3.9 miles from jct of county roads 204 and 205 on road 204 along Gold Run Creek, SW of Susanville. 1395 Comment
  CAS-BOT-BC116054  Delphinium nuttallianum Elmer Ivan Applegate 1929-6-21 5780 Lassen Kelley's Camp, Warner Valley, Mt. Lassen region Comment
  CHSC93695  Delphinium nuttallianum Lowell Ahart; John Dittes 2005-6-2 11955 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
  UC1126095  Delphinium nuttallianum A. Simontacchi 1940-5-14 708 Lassen 10.2 mi e Coyote Spring; Lassen National Forest, Halls Flat Quadrangle Comment
  CAS-BOT-BC116049  Delphinium nuttallianum M. M. Hanna 1956-6-3 910 -913 Lassen Grassy slope above Hiway 299. 87.3 mi. E. of Redding, Calif. Comment
  CAS-BOT-BC116050  Delphinium nuttallianum Mrs. E. C. Sutliffe 1957-7-21 863 Lassen Drakesbad, Lassen Volcanic Park Comment
  UC1142937  Deschampsia cespitosa A. L. Hormay 1941-6-23 16 Lassen Burgess Spring 1676 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-BC194257  Deschampsia cespitosa subsp. cespitosa John Thomas Howell 1934-7-9 12517 Lassen Bridges Creek Spring 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
  UC188776  Deschampsia cespitosa subsp. cespitosa Milo S. Baker July 1894 Lassen Eagle Lake Comment
  CAS-BOT-BC192739  Deschampsia danthonioides John Thomas Howell; Gordon H. True; Wayne Dakan 1974-7-30 50650 Lassen South and southeast of Diamond Mt. 2286 Comment
  UC1024890  Deschampsia danthonioides Leo Whitney 1935-5-27 3124 Lassen Bieber Comment
  UCD61878  Deschampsia danthonioides A. A. Beetle 1941-6-28 2799 Lassen 10 miles W of Chester. 1524 Comment
  RSA268159  Deschampsia danthonioides J. R. Reeder, C. G. Reeder 1972-6-1 5630 Lassen 2 miles S. of Nubieber. 1037 Comment
  CAS-BOT-BC201813  Deschampsia elongata John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49467 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1100290  Deschampsia elongata Malcolm A. Nobs and S. Galen Smith 1949-7-21 1058 Lassen 4 mi. n. Madeline Comment
  UCD63560  Deschampsia elongata John Thomas Howell; Gordon H. True and Margaret Williams 1973-6-28 49467 Lassen Sierra Nevada. Elysian Valley west of Janesville. 1325 Comment
  CAS-BOT-BC201808  Deschampsia elongata Malcom A. Nobs; S. Galen Smith 1949-7-21 1058 Lassen 4 miles north of Madeline Comment
  CHSC4810  Descurainia pinnata R. Carter 1967-7-7 578 Lassen Collected at Eagle Lake Biology Station, e central shore of Eagle Lake. 1524 Comment
  UC773932  Descurainia pinnata L. R. Short and W. McNulty 1936-6-15 S- 435 Lassen Burgess Spring Experiment Range; Lassen Forest 1833 Comment
  CHSC504  Descurainia sophia J. Wakeman 1963-5-11 Lassen Six mi. east of Bieber on Hiway 89. Comment
  RSA716273  Descurainia sophia L. Ahart, John Dittes 2005-6-2 11925 -A Lassen Along the road, near the Anderson Ranch home, Long Valley, about 4.75 miles (air) N of the intersection of Scott Road and Hwy 70, 6.2 miles (air) NW of Hallelujah Junction. 1460 Comment
  UC1776704  Descurainia sophia G. Schoolcraft 1993-5-25 2268 Lassen N and S of Smoke Creek road 1463 Comment
  JEPS25534  Dichelostemma multiflorum Rimo Bacigalupi with Lincoln Constance 1959-6-16 7148 Lassen 3.7 mi s Susanville to Adin road junction with road to Bieber (along county road from Susanville to Adin) 1615 Comment
  UCD21046  Dieteria canescens E. Bortiri 2002-7-19 WFC 82 Lassen Poison Lake, in pine forest on side of road, Lassen NF, off Hwy 44 Comment
  CAS-BOT-BC299812  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Comment
  UC223695  Dieteria canescens var. canescens Elmer I. Applegate 1923-9-30 4031 Lassen Doyle Money Lake Valley Comment
  UC1136761  Dieteria canescens var. shastensis Irwin H. Johnson 1933-7-14 F 268 Lassen Lassen Forest 1752 Comment
  UC1536890  Dieteria canescens var. shastensis G. H. True Jr. 1936-6-25 532 Lassen flats e of Harvey Ranger Station; Harvey Valley 1706 Comment
  CAS-BOT-BC153671  Diplacus mephiticus G. Schoolcraft 1989-6-17 1909 Lassen Northwest slope of Shaffer Mtn. Comment
  CAS-BOT-BC153675  Diplacus mephiticus M. S. Baker; Frank Nutting 1894-7-12 s.n. Lassen Pine Creek Comment
  CAS-BOT-BC153681  Diplacus mephiticus L. G. Bennett 1967-6-23 21 Lassen Eagle Lake Biological Station Grounds 1554 Comment
  CHSC4812  Diplacus mephiticus R. Carter 1967-7-7 577 Lassen Collected outside dining hall, n side, 15 yds from building. 1524 Comment
  SEINET13701429  Diplacus mephiticus N. H. Holmgren, P. K. Holmgren 1978-1 8921 Lassen Vicinity of spring at fork to Painters Flat on E side of Observation Peak, 28 km (17.4 miles) E of Ravendale, 22.5 km (14 miles) airline distance. 1680 Comment
  CAS-BOT-BC151431  Diplacus nanus A. M. Vollmer; L. Beane 1953-7-1 104 Lassen Along Halls Flat Road, beginning 6 miles wet of Susanville to McArthur 1554 Comment
  CDA31696  Distichlis spicata E. E. Fix, Agric. Comm. Sep 1951 Lassen 0 Comment
  UCD64387  Distichlis spicata A. A. Beetle 1941-6-28 2807 Lassen 6 miles south of Ravendale, lower slopes of Observation Peak. Comment
  SD61013  Dodecatheon alpinum subsp. majus Darley F. Howe 1964-7-31 3899 Lassen Meadow above Blue Lake, Warner Mts., Modoc National Forest 1890 Comment
  UC1137728  Dodecatheon conjugens L. R. Short 1936-4-28 S- 331 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1767 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
  CHSC12415  Downingia bacigalupii Anne Linda Brisk 1969-6-26 30 Lassen Growing in Papoose Meadow, 13.5 mi SW of ELBS. 1658 Comment
  JEPS108700  Downingia bacigalupii H. Chappel, J. Goldhammer, K. Moran 2002-7-9 ALT- 18 Lassen Muck Valley 1386 Comment
  UC1024290  Downingia bacigalupii Helen K. Sharsmith 1955-6-27 4512 Lassen near Fall River Mills (adjacent to State Highway 299); Lassen National Forest Comment
  UC1229824  Downingia bacigalupii John Weiler 1959-4-22 59203 Lassen 11.1 mi se Eagle Lake (along county highway A-1) Comment
  UC1368461  Downingia bacigalupii R. K. Gierisch 1969-7-18 3549 Lassen Madeline Plains, near Modoc Forest/Expt. Area Madeline Plains 1615 Comment
  UC1483852  Downingia bacigalupii G. Schoolcraft 1980-7-15 313 Lassen n end Nelson Corral Reservoir 1804 Comment
  UC1520668  Downingia bacigalupii Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9462 Lassen 5.6 mi w U.S. Highway 395; Madeline Plains 1615 Comment
  UC1609180  Downingia bacigalupii Vernon H. Oswald and Lowell Ahart 1993-6-28 5612 Lassen ne of Poison Lake (n of Hwy 44 on Rd 33N06, nne of Burgess Meadow, on the sse flank of Harvye Mtn); Harvey Mtn. 1798 Comment
  JEPS108474  Downingia bacigalupii Lisa Schultheis 1995-6-28 233 -95 Lassen SW of Nubeiber, off of 299; S side of road at entrance to Muck Valley Hydroelectric Plant.. Comment
  JEPS22793  Downingia bicornuta var. bicornuta August L. Hormay 1934-5-15 Lassen 1 mi ne Halls Flat Railroad Station (on the Keddie-Nubieber (freight) branch of the W.P.R.R.) 1554 Comment
  UC157670  Downingia bicornuta var. bicornuta Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  RSA128294  Downingia insignis P. H. Raven, Otto T. Solbrig 1958-6-17 13282 Lassen Along U.S. Hwy 395, 1.9 miles S of Ravendale. Comment
  HSC63957  Downingia insignis Teresa Prendusi 1980-7-1 1124 Lassen Champs Flat, 8 mi. W of N Eagle Lake. 1677 Comment
  CHSC99496  Downingia laeta Lowell Ahart; John Dittes 2008-6-20 14928 Lassen Bottom of vernal pools, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA39757  Downingia laeta P. A. Munz 1947-5-20 11892 Lassen Milford 1265 Comment
  SBBG33614  Downingia pulchella H. and M. Dearing 1938-6-30 2224 Lassen ca. 50 mi W of Susanville 1219 Comment
  CHSC58489  Draba albertina Vernon H. Oswald 1992-7-3 5058 Lassen Lassen Volcanic National Park. Grassy Creek between Horseshoe and Snag lakes, ca. 0.3 mi NE of the trail to Cameron Meadow. On slope bordering the creek. 1950 Comment
  CHSC65308  Drosera anglica Vernon H. Oswald; Beth Corbin, Mike Dolan 1995-8-26 7216 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Lik ... Field redacted by CHSC, contact the data manager for more information 1859 Comment
  UC773878  Drymocallis lactea L. R. Short, J. Warren 1936-6-10 S- 425 Lassen Burgess Spring Experiment Range 1853 Comment
  UC1561938  Eatonella nivea Barbara Ertter with Gary Schoolcraft 1987-6-16 7181 Lassen s-facing slope below ridge ca 1 mi w of Hots Springs VABM (on ne side of Honey Lake); Skeedaddle Moutnations, Honey Lake 1828 Comment
  CHSC112750  Elatine californica Lowell Ahart; John Dittes 2013-7-22 18882 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS123970  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20296 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS123972  Elatine californica Lowell Ahart, John Dittes 2015-7-13 20300 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS87390  Elatine californica Vernon H. Oswald and Lowell Ahart 1993-7-8 5661 Lassen 1.9 mi n Hwy. 44 (Pittville Rd (Lassen 111, 36N01), on se edge of Poison Lake); se edge Poison Lake 1706 Comment
  UCR227661  Elatine californica R. F. Thorne, Larry E. DeBuhr 1975-8-22 47212 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  SEINET9342679  Elatine californica Robert Thorne, DeBuhr, Larry 1975-8-22 47212 Lassen Lassen County Comment
  CAS-BOT-BC113619  Eleocharis acicularis George Wilson Gillett 1957-9-4 1128 Lassen Widow Lake. East margin of lower lake, near inlet; in drying mud. 2072 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
  CAS-BOT-BC113563  Eleocharis bolanderi Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. Comment
  CHSC60450  Eleocharis macrostachya Mary Ann Showers 1992-6-13 2555 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  UC190417  Eleocharis macrostachya M. S. Baker and Frank Nutting 1894-7-6 Lassen Adobe Meadow, Dixey Valley Comment
  CAS-BOT-BC112846  Eleocharis macrostachya John Thomas Howell 1973-7-10 49805 Lassen Near Susanville on road to Janesville. 1295 Comment
  CAS-BOT-BC112847  Eleocharis macrostachya Hans Leschke 1959-8-2 1588 Lassen Manzanita Lake 1781 Comment
  CHSC117286  Eleocharis palustris Lowell Ahart; John Dittes 2016-7-15 21215 Lassen About 300b yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) mortheast of Bieber, Big Valley. 1261 Comment
  UCD54570  Eleocharis parvula Ellen Dean; Dawn Cunningham 2005-10-25 2753 Lassen East of the town of Susanville. Property N of California Correctional Facility. Western side of property. Extensive seasonal wetland system that was used until June 2005 as receiving area for geothermal heating system used by Correctional Facility and prison. 1248 Comment
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Oct 5 2010
  UC803919  Elymus G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-6 4008 Lassen 5 mi w Eagle Lake; McCoy Flat 1524 Comment
  HSC10943  Elymus X hansenii M. T. Milligan 1964-8-6 210 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  CAS-BOT-BC227482  Elymus elymoides John Thomas Howell; Gordon H. True 1973-8-1 50197 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CAS-BOT-BC227490  Elymus elymoides Gary Schoolcraft 1983-6-29 1053 Lassen Ash Valley 1554 Comment
  UCD61838  Elymus glaucus Burle Jones 1940-8-15 Lassen Lassen Park, Hat Creek. Comment
  CAS-BOT-BC206735  Elymus glaucus subsp. glaucus John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49446 Lassen Elysian Valley, west of Janesville - Sierra Nevada 1325 Comment
  UCD62499  Elymus multisetus John Thomas Howell 1976-7-20 52001 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek. 1432 Comment
  JEPS121791  Elymus spicatus B. Castro and L. P. Janeway 2012-7-3 1938 Lassen Modoc Plateau. 16 air mi ENE of Susanville, and 0.35 mi W of Hwy 395, along road up to Shaffer Mountain. Comment
  UCR119182  Elymus trachycaulus Beecher Crampton 1954-7-5 2058 Lassen Modoc Plateau, 4.5 miles west of Susanville along state highway 36. 1433 Comment
  UCD62694  Elymus trachycaulus subsp. trachycaulus August L. Hormay 1932-7-1 Lassen Lassen National Forest. Bogard Ranger Station. Comment
  CDA2044  Elytrigia elongata T. C. Fuller 1963-7-16 10920 Lassen Head of Secret Valley, W side of Hwy 395 to Litchfield, 14.1 miles S of Ravendale. 0 Comment
  CHSC33322  Ephedra viridis P. Reynolds 1979-7-4 17 Lassen 3 mi. NE of Wendel, Wendel Canyon in the Skedaddle Mtn. Range. 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
  CHSC7186  Ephedra viridis Lynn R Thomas 1969-3-6 9 Lassen 75 yds. W of US 395 ca. 26 mi ne of Susanville (nr rail and highway intersection at Viewland). 1347 Comment
  LA6840  Ephedra viridis Carl Epling; William Robison 1935-7-15 sn Lassen Janesville Comment
  CHSC25092  Epilobium brachycarpum K. R. Stern 1967-7-1 2441 Lassen Murrer Meadow Road, ca. 2.5 mi. SE of Eagle Lake Biology Station. 1554 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
  RSA0105578  Epilobium brachycarpum Lowell Ahart, John Dittes 2013-7-22 18845 Lassen About 10 yards east of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  SEINET12539614  Epilobium brachycarpum C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  RSA0011500  Epilobium brachycarpum Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46975 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CHSC117519  Epilobium campestre Lowell Ahart; John Dittes 2016-7-13 21128 Lassen West of the pond and along the poor dirt road, 60 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Biebeer, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC6189  Epilobium ciliatum subsp. ciliatum J. B. Kimsey 1946-6-26 Lassen Pine Creek, Eagle Lake. 1584 Comment
  UC725477  Epilobium densiflorum A. A. Heller 1938-7-28 15296 Lassen about a mile e Westwood (meadow on edge of swamp) 1524 Comment
  CHSC63405  Epilobium hallianum Vernon H. Oswald; Beth Corbin, Michael Dolan 1994-6-18 6317 Lassen Cold Springs near Clarks Valley Rd. (Lassen 510) ca. 11 mi E of Madeline. In a meadow. 1871 Comment
  RSA458712  Epilobium minutum Christopher Davidson 1975-6-7 2758 Lassen 1 mile E of Beckwourth Pass on Hwy 70. 1524 Comment
  CHSC27074  Epilobium oregonense Robert A. Schlising 1978-8-1 3333 Lassen SE of Eagle Lake in Murrers Upper Meadow. 1645 Comment
  CHSC96725  Epilobium oregonense Gordon Leppig; T. LaBanca, L. Arguello 1997-6-29 527 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 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
  JEPS88086  Equisetum arvense Vernon H. Oswald and Lowell Ahart 1996-6-17 7821 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
  CAS-BOT-BC57303  Equisetum laevigatum John Thomas Howell; Gordon H. True 1973-8-1 50235 Lassen Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville 2133 Comment
  RSA0035920  Equisetum laevigatum Lowell A. Ahart, John Dittes 2008-6-20 14933 Lassen On the levee road, where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC62615  Equisetum laevigatum Baker and Nutting 1894-7-5 Lassen <Dixay> Valley 1066 Comment
  SEINET10530241  Equisetum laevigatum Mary Susan Taylor 1982-5-29 Taylor 4566 Lassen 4900 ft. T22N R17E sw/sw sec 23. Loyalton quad. In sandy rd embankment at jct of Scott Rd and Long Valley Creek, ca. 0.5 mi w of Hwy 395, ca. 20 mi n of Reno. 1493 Comment
  CAS-BOT-BC213624  Eragrostis mexicana subsp. virescens John Thomas Howell 1976-7-19 51943 Lassen Susanville 1296 Comment
  CAS-BOT-BC284059  Eragrostis pectinacea var. pectinacea John Thomas Howell 1975-7-23 51383 Lassen Susanville, Sierra Nevada 1295 Comment
  CHSC71896  Eragrostis pectinacea var. pectinacea Vernon H. Oswald; Lowell Ahart 1998-9-8 9578 Lassen Hwy. 299 at the RR overpass on the east side of Nubieber. Near the highway. 1255 Comment
  CHSC118851  Eremogone congesta var. subcongesta L. P. Janeway; B. Castro 2015-6-5 11763 Lassen Great Basin, Modoc Plateau. Along the road from the south end of Surprise Valley toTuledad Canyon, 7.4 road-km south ofSurprise Valley Road; 1.4 air-km northwest of Mahogany Mtn. 1731 Comment
  SEINET8821547  Eremogone congesta var. subcongesta G. Schoolcraft 1998-6-30 2746 Lassen N end of Fort Sage Mountains. 1859 Comment
  JEPS29748  Eremothera boothii subsp. alyssoides Rimo Bacigalupi and L. R. Heckard 1962-5-28 8502 A Lassen 2 mi e Wendel Junction (n of Honey Lake, on road from US 395 past Flanagan to Pyramid Lake NV) 1219 Comment
  CAS-BOT-BC160009  Eremothera boothii subsp. boothii Louella Bass 1980-6-16 s.n. Lassen Wendel 1221 Comment
  CHSC23501  Eriastrum signatum Wayne O. Baum 1971-7-16 71 -78 Lassen S. slope of Gallatin Peak. 2042 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
  JEPS116749  Eriastrum sparsiflorum David Gowen 2006-8-2 657 Lassen South of Constantia on Red Rock Rd. just east of Hwy 395. Comment
  JEPS124583 Image available Eriastrum sparsiflorum J. Yamanaka 1965-7-12 123 Lassen Highway 395, 2.6 miles No. of Milford Habitat. 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
  SEINET14623340  Eriastrum wilcoxii M. J. Williams 1974-7-26 74 -L-26 Lassen 2 miles W of Hallelujah Junction, S of Hwy 70. 1494 Comment
  CAS-BOT-BC515234  Eriastrum wilcoxii Rimo Bacigalupi; G. T. Robbins 1955-7-21 5418 Lassen Southern edge of Secret Valley, along the Smoke Creek road, 6.8 mi E of US Hwy 395 Comment
  CHSC349  Ericameria bloomeri 1944-7-31 Lassen Westwood. 1549 Comment
  UC1136849  Ericameria bloomeri L. R. Short and J. Warren 1936-8-17 S- 497 Lassen Burgess Spr. Exp. Range Lassen Forest 1767 Comment
  UC1523743  Ericameria bloomeri Gary Schoolcraft 1981-8-25 565 Lassen w side of Eagle Lake (along main road) Comment
  CAS-BOT-BC287478  Ericameria greenei Ralph K. Gierisch 1968-7-11 3348 Lassen Harvey Valley, Lassen Forest 1676 Comment
  CAS-BOT-BC298183  Ericameria nauseosa var. oreophila Carl B. Wolf 1931-9-4 2397 Lassen Big Valley, 3.6 miles from Bieber on road to Alturas 1267 Comment
  JEPS21518  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass between Shaffer Mt. and Warren Peak Comment
  UC761817  Ericameria nauseosa var. speciosa R. F. Hoover 1940-9-29 4646 Lassen pass betw. Shaffer Mt. and Warren Peak Comment
  CAS-BOT-BC293009  Ericameria parryi var. nevadensis C. B. Wolf 1931-9-6 2405 Lassen 1/2 mile from Janesville on the road to Wendel - Western edge of Honey Lake Valley 1280 Comment
  POM33280  Erigeron aphanactis Marcus E. Jones 1897-6-18 s.n. Lassen Chat. [also Chats, a former settlement] 1524 Comment
  JEPS97423  Erigeron aphanactis var. aphanactis Vernon H. Oswald and L. Ahart 1995-6-19 6890 Lassen T30N R15E SE1/4 SE1/4 Sect. 12, 4440 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 3.6 mi e of Hwy. 395. Many-stemmed herbaceous perennial from a branching and tap-rooted caudex 1353 Comment
  UCR244068  Erigeron aphanactis var. aphanactis Jim Andre, G. L. Clifton 1993-6-9 19694 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
  UC31422 Image available Erigeron barbellulatus M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake; ; Silver Lake, Lassen Co. Comment
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Oct 3 2015
  CAS-BOT-BC294488  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-7-8 12513 Lassen Harvey Valley Comment
  CAS-BOT-BC294492  Erigeron bloomeri var. bloomeri John Thomas Howell 1934-6-10 11867 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  CHSC67463  Erigeron bloomeri var. bloomeri James D. Jokerst 1991-5-29 3315 Lassen Modoc Plateau. Survey for reroute of hwy. 139 ca. 0.75 N of the N end of Eagle Lake, E of the highway +/- 500 ft on top of rodge N of drainage. 1584 Comment
  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
  JEPS89691  Erigeron bloomeri var. bloomeri Dean W. Taylor 1974-6-14 3719 Lassen Janesville Grade Road at summit 4 mi ssw of Janesville (Plumas National Forest); Northern Sierra Nevada, Plumas National Forest 1706 Comment
  UC1609105  Erigeron bloomeri var. bloomeri Vernon H. Oswald and Lowell Ahart 1993-6-28 5581 Lassen Harvey Valley Rd (33N02) 1.2 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1731 Comment
  UC773917  Erigeron bloomeri var. bloomeri L. R. Short and J. Warren 1936-6-23 S- 451 Lassen Burgess Springs Experiment Range Lassen National Forest, Burgess Springs Experiment Range 1741 Comment
  CAS-BOT-BC294484  Erigeron bloomeri var. bloomeri G. Schoolcraft 1998-6-30 2745 Lassen N. end of Ft. Sage Mtns. 1950 Comment
  RSA636042  Erigeron bloomeri var. bloomeri Michael A. Vincent 1999-6-9 8583 b Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  CHSC93675  Erigeron canadensis Lowell Ahart; John Dittes 2005-6-2 11974 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  CAS-BOT-BC294905  Erigeron chrysopsidis var. austiniae G. Schoolcraft 1988-6-7 1811 Lassen About 14 air mi. NE of Ravendale 1737 Comment
  CHSC99112  Erigeron divergens Lowell Ahart; John Dittes 2008-6-20 14965 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SEINET8667206 Image available Erigeron divergens M. J. Williams 1984-6-16 84- 31 -1 Lassen Doyle grade, County Hwy 331, 2.6 mi W of Doyle Comment
  UC55075  Erigeron divergens Milo S. Baker 1898-7-12 306 Lassen The Bench Comment
  CAS-BOT-BC300371  Erigeron eatonii var. plantagineus B. Bartholomew; B. Anderson 1988-6-25 4374 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CHSC65088  Erigeron eatonii var. plantagineus Vernon H. Oswald; Lowell Ahart 1995-7-24 7129 Lassen High Cascade Range. N of Lake Almanor and ca. 2 mi ESE of Silver Lake on Forest Route 10 just S of its jct. with Forest Road 30N21. At roadside. 1935 Comment
  POM32997  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville. 1524 Comment
  POM32999  Erigeron eatonii var. plantagineus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  UC1583978  Erigeron eatonii var. plantagineus G. Schoolcraft 1990-7-2 2098 Lassen Cold Spring Mtn.; lower slopes 1905 Comment
  CHSC112185  Erigeron elegantulus Dean Wm. Taylor 2012-6-7 21227 Lassen Modoc Plateau. Grass Valley; Grasshopper Valley Road 2.3 road miles E of junction with Highway 139. 1635 Comment
  POM36253  Erigeron filifolius Marcus E. Jones 1897-6-19 s.n. Lassen Chat. 1524 Comment
  CHSC5208  Erigeron filifolius var. filifolius 1946-6-14 Lassen Eagle Lake. 1584 Comment
  CHSC80592  Erigeron filifolius var. filifolius Vernon H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10035 Lassen Northeast of Doyle in the Fort Sage Mtns, trail to top of mountain from the end of a 4WD road. 1828 Comment
  CHSC93249  Erigeron filifolius var. filifolius John Dittes; Scott Chamberlain 2004-6-28 1016 Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-mile east of Plumas County line; near meadow edge. 1511 Comment
  RSA739690  Erigeron filifolius var. filifolius John Dittes, Scott Chamberlain 2004-6-28 s.n. Lassen Modoc Plateau; Long Valley; ca. 4.6 air-miles north by northeast of Hwy 70 at Beckwourth Pass, ca. 3.2 air-miles west of Hwy 395, ca. 0.3 air-miles east of Plumas County line. 1512 Comment
  CAS-BOT-BC295181  Erigeron inornatus John Thomas Howell 1974-7-10 50516 Lassen Janesville 1295 Comment
  UC1523776  Erigeron inornatus var. inornatus Gary Schoolcraft 1981-7-21 529 Lassen about 2 mi along main road, se of Little Valley P.O. 1280 Comment
  UC584244  Erigeron lassenianus var. lassenianus G. L. Stebbins Jr. and J. A. Jenkins 1937-7-9 2264 Lassen bare summit ridge and ridges sw Diamond Mt. (s of Susanville, Plumas and Lassen Counties) Comment
  CAS-BOT-BC295506  Erigeron linearis Mrs. C. C. Bruce 1898-6-1 21821 Lassen Madaline [Madeline] Plains Comment
  CAS-BOT-BC295507  Erigeron linearis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch 2225 Comment
  CHSC68844  Erigeron linearis Vernon H. Oswald; Lowell Ahart 1997-6-24 8608 Lassen South of Susanville on the north side of Diamond Mtn. at slope along Forest Rd. 29N43, 5.4 miles east of Gold Run Rd. (29N10), 0.7 mi east of Lassen NF boundary. At roadside. 1889 Comment
  CHSC92678  Erigeron linearis L. P. Janeway; B. Castro 2005-7-10 8485 Lassen Northern High Sierra Nevada. Crest of Diamond Mountains over-looking the northwest end of Honey Lake, more or less at the north end of Stony Ridge. Northeast edge of low flat ridge. 1993 Comment
  JEPS127633  Erigeron linearis Alejandro Brambila, Michael Dolan 2016-7-7 CA 320 -155 Lassen Likely Mtn. on road 171. Collecting site is a 100-300 m before reaching the Forest Service Boundary. Comment
  UC31442  Erigeron linearis Mrs. R. M. Austin Jun 1894 Lassen lava bed w Willow Creek Comment
  CAS-BOT-BC295779  Erigeron petrophilus var. sierrensis Michael A. Vincent 1999-6-9 8583 a 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
  UCR7844  Erigeron philadelphicus Marilyn Malin 1968-6-27 255 Lassen Spring fed roadbank on E side of Rd 425, c. 1 mi north of Gallatin Beach Picnic area, SW side of Eagle Lake. 1570 Comment
  RSA768024  Erigeron pumilus subsp. intermedius L. Ahart, John Dittes 2010-7-31 16986 Lassen About 3300 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. 1521 Comment
  CHSC86949  Erigeron pumilus var. intermedius L. P. Janeway 2001-6-19 7187 Lassen High Cascade Range. Southeast edge of Long Lake (which is dry) at west end of Long Valley; 6.4 km north-northwest of Harvey Mountain. 1640 Comment
  CHSC89730  Erigeron pumilus var. intermedius L. P. Janeway 2004-6-26 8163 Lassen High Cascade Range. At Patterson Well in Patterson Flat; Blacks Mountain Experimental Forest. 1767 Comment
  UC1536739  Erigeron pumilus var. intermedius G. H. True Jr. 1936-6-27 558 Lassen near top of Hot Spring Mountain 1828 Comment
  UC76016  Erigeron pumilus var. intermedius Milo S. Baker 1894-7-1 Lassen Dixey Valley Comment
  CAS-BOT-BC300121  Erigeron pumilus var. intermedius E. K. Balls 1950-5-22 14829 Lassen 1.5 mi. southeast of Milford, Hwy 395, above Honey Lake 1280 Comment
  NY243318  Eriogonum baileyi G. Schoolcraft 1985-7-29 1490 Lassen Western slopes of Ft. Sage Mtns. 1402.1 Comment
  CAS-BOT-BC241570  Eriogonum baileyi var. baileyi John Thomas Howell 1955-7-19 30817 Lassen East side of Beckwourth Pass 1493 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
  CAS-BOT-BC241834  Eriogonum caespitosum Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 2 1/2 miles north of Secret Valley, C.C.C. Camp, U.S. Hy. 395 Comment
  OBI48168  Eriogonum caespitosum Rhonda Riggins 1989-4-27 1634 Lassen US 395, 8.4 mi N Litchfield, 26.6 mi S Rav endale 1311 Comment
  UCR92117  Eriogonum cernuum 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
  NY242504  Eriogonum collinum A. J. Cronquist 1959-6-17 8478 Lassen 1 mile south of Ravendale, 40 miles northeast of Susanville. 1615.4 Comment
  NY242508  Eriogonum collinum H. D. D. Ripley 1943-6-15 5758 Lassen Near Viewland. 1310.6 Comment
  UCD99875  Eriogonum douglasii John Thomas Howell; Gordon H. True, Wayne Dakan 1974-7-30 50662 Lassen summit ridge of Diamond Mt. 2286 Comment
  POM105426  Eriogonum douglasii var. douglasii Marcus E. Jones 1897-7-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CAS-BOT-BC246498  Eriogonum douglasii var. meridionale H. D. Ripley; R. C. Barneby 1943-6-13 5712 Lassen South of Johnstonville 1325 Comment
  CHSC23494  Eriogonum douglasii var. meridionale K. R. Stern 1974-6-26 5866 Lassen E end of Champs Flat. Comment
  CHSC50839  Eriogonum elatum var. elatum Vernon Oswald; Lowell Ahart 1990-7-25 4399 Lassen Intersection of Hwy 70 and Scott Rd, 2.2 mi west of Hwy 395. 1463 Comment
  CAS-BOT-BC259389  Eriogonum luteolum Ernest C. Twisselmann 1961-9-21 6571 Lassen Harvey Valley Road, ca. 14 miles south of Pitville [Pittville] 1219 Comment
  CAS-BOT-BC263044  Eriogonum maculatum Noel H. Holmgren; James L. Reveal 1964-8-22 1724 Lassen 35 miles northeast of Susanville 18 miles south of Ravendale along U.S. 395 Comment
  CAS-BOT-BC263048  Eriogonum maculatum Peter H. Raven; Otto T. Solbrig 1958-6-17 13271 Lassen Along United States Highway 395, 19.0 miles south of Ravendale Comment
  RSA780322  Eriogonum marifolium Elizabeth A. Kempton 2007-8-15 509 Lassen Lassen National Forest, Lassen Peak ca. 0.25 mile along trail from trailhead/parking lot. 2678 Comment
  NY281555  Eriogonum microthecum var. laxiflorum E. K. Balls 1952-10-10 18143 Lassen In Northern Juniper Woodland, 8 mi. s.e. of Ravendale, Hwy 395, between Susanville and Alturas. 1280.2 Comment
  NY282159  Eriogonum microthecum var. laxiflorum R. F. Hoover 1940-9-28 4636 Lassen Canyon north of Leavitt. Comment
  UC584343  Eriogonum microthecum var. laxiflorum G. L. Stebbins Jr. and J. A. Jenkins 1937-7-8 2223 Lassen 6 mi s Ravensdale 1660 Comment
  NY282208  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 1982-9-8 912 Lassen In Robinson Canyon west of Doyle Ca. 1585.0 Comment
  NY803458  Eriogonum microthecum var. schoolcraftii G. Schoolcraft 2003-8-26 2946 Lassen Slopes west of The Mark Store 6 miles southeast of Milford, CA - nw1/4 1320 Comment
  SEINET245664  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mi west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle 1661 Comment
  UC1980557  Eriogonum microthecum var. schoolcraftii James L. Reveal 2002-8-2 8370 Lassen 0.2 mile west of Plinco Mine Road (Lassen Co. Rd. 331), 3.5 miles east of U.S. Hwy. 395 at Doyle. Comment
  NY283744  Eriogonum nidularium R. F. Hoover 1940-9-29 4643 Lassen Pass between Shaffer Mountain and Warren Peak. Comment
  UCD149826  Eriogonum nidularium William Anderson 1963-6-22 s.n. Lassen Lassen County. Wendel Canyon. Comment
  SEINET530760  Eriogonum nudum var. deductum Paul Opler 2008-8-6 Lassen West of Milford, nr. Laufman Campground. Comment
  CHSC13456  Eriogonum nudum var. pubiflorum J. Pitts 1972-6-25 272 Lassen 30 yds. e of Papoose Creek on Road 4.25, on n side of road. S of Eagle Lake 1/4 mi. Comment
  CHSC27645  Eriogonum nudum var. pubiflorum Jerry Snodgrass 1978-7-10 47 Lassen Coleman L., SE of Eagle L. 1962 Comment
  CAS-BOT-BC269925  Eriogonum nudum var. pubiflorum Barrett Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km N of Rte 299 1065 Comment
  NY762344  Eriogonum nudum var. pubiflorum B. Anderson 1986-7-9 3129 Lassen Road to Day, about 2.4 km north of Route 299 1065 Comment
  SEINET530683  Eriogonum nummulare Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  SEINET530684  Eriogonum nummulare Paul Opler 2007-7-7 Lassen N end Turtle Mountain. 1288 Comment
  UCR259107  Eriogonum nummulare John F. Emmel 1993-7-29 1284 Lassen Southeast Honey Lake Valley, 4.1 air miles west and 1.3 air miles south of Calneva railroad stop, c. 2 air miles north of peak of Turtle Mountain 1256 Comment
  POM105327  Eriogonum ochrocephalum var. ochrocephalum Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mountain; Susanville; Perkin's Ranch. 1829 Comment
  RSA221819  Eriogonum ochrocephalum var. ochrocephalum Noel Holmgren, John Fay, Barton Bethers 1970-6-25 4378 Lassen North end of Petersen Mountain, near Hwy 395, 8 miles north of jct. with Hwy 70 (Hallelujah Junction) 1524 Comment
  SBBG65173  Eriogonum ovalifolium S. W. Hutchinson -Jun-1925 Lassen Eagle Lake to Caribou Lake 1828 Comment
  JEPS87369  Eriogonum ovalifolium var. nivale Vernon H. Oswald and Lowell Ahart 1993-6-28 5591 Lassen Harvey Valley Rd.(33N02) 1.7 mi n Hwy 44 (e of Poison Lake, e side of Grays Valley); Grays Valley 1719 Comment
  OBI76937  Eriogonum ovalifolium var. purpureum Anthony Baniaga 2011-7-6 422 Lassen Lassen Natl forest. NW of intersection of 29N02Y and the "B" spur. Fredonyer Pass quad T29N R10E sec 22 SE of NE 1630 Comment
  HSC63562  Eriogonum prociduum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6027 Lassen Ash Valley, along branch road off Adin-Madeline road, 200 yds. from junction 1555 Comment
  UC1483820  Eriogonum prociduum G. Schoolcraft 1980-7-14 308 Lassen w Madeline (Ash Valley); Ash Valley 1548 Comment
  CAS-BOT-BC258146  Eriogonum prociduum var. prociduum E. K. Balls 1950-5-19 14780 Lassen 16.5 miles W. of Madeline on rd. from Adin 1676 Comment
  POM165251  Eriogonum spergulinum var. reddingianum M. S. Baker 77 Lassen Pine Creek. Comment
  POM203845  Eriogonum spergulinum var. reddingianum J. T. Howell 1934-7-6 12446 Lassen Harvey Valley Comment
  POM165475  Eriogonum sphaerocephalum Geo. D. Butler 1910-5-20 1371 Lassen Dry rocky hill, Yreka. Comment
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Apr 25 2013
  RSA716265  Eriogonum sphaerocephalum L. Ahart, John Dittes 2005-6-2 11984 Lassen North side of a poor dirt road, Long Valley, about 4.5 mi. (air) northeast of the intersection of Scott Road and Highway 70; 5.8 mi. (air) northwest of Hallelujah Junction. 1431 Comment
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Jun 1 2009
  CHSC110769  Eriogonum sphaerocephalum var. halimioides Dean Wm. Taylor 2012-5-16 21200 b Lassen Modoc Plateau. Ca. 1 air mile S of Stanford Camp (ca. 3 air mi SSE of Big Jack Lake). 1920 Comment
  UC1226260  Eriogonum sphaerocephalum var. halimioides Arthur Cronquist, Arthur H. Holmgren 1959-6-18 8482 Lassen 5 mi s Adin Comment
  NY283239  Eriogonum strictum subsp. proliferum H. D. D. Ripley 1943-6-13 5711 Lassen South of Johnstonville 1325.9 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
  CHSC93663  Eriogonum strictum var. anserinum Lowell Ahart; John Dittes 2005-6-2 11984 Lassen North side of the poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.8 miles (air) northwest of Hallelujah Junction. 1430 Comment
  CHSC99136  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
  RSA768778  Eriogonum strictum var. anserinum L. Ahart, John Dittes 2010-7-31 16989 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
  UC85812  Eriogonum strictum var. proliferum Brandegee June 1892 Lassen Susanville Comment
  CAS-BOT-BC267885  Eriogonum umbellatum Marcus E. Jones 1897-6-26 s.n. Lassen Perkin's Ranch, Susanville 1463 Comment
  JEPS126484  Eriogonum umbellatum Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-15 CA 350 -051 Lassen Take Horse Lake Road for about 15 miles. Comment
  JEPS127724  Eriogonum umbellatum Alejandro Brambila, Michael Dolan 2016-8-2 CA 320 -181 Lassen Head north on unnamed road west of Holbrook Reservoir from Ash Valley Road. Comment
  CHSC4436  Eriogonum umbellatum var. modocense K. R. Stern 1967-7-1 2461 Lassen Ca. 16 mi. NE of Susanville. State Hwy 139. Comment
  CHSC66395  Eriogonum umbellatum var. modocense Vernon H. Oswald; Lowell Ahart 1996-6-17 7799 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the S side of the trail just E of Devils Corral Trailhead. 1420 Comment
  CHSC99123  Eriogonum umbellatum var. modocense Lowell Ahart; John Dittes 2008-6-19 14882 Lassen Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
  GMDRC6954  Eriogonum umbellatum var. modocense J. M. Andre, T. La Doux, Senna & Elias Andre 2013-7-12 31429 Lassen along north side of Hwy 44 at south end of Grays Valley, along NF Rd# 33N02, north of Bogard Buttes, about 30 mi. west of Susanville. 1733 Comment
  HSC17376  Eriogonum umbellatum var. modocense M. T. Milligan 1964-8-6 202 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  UC849718  Eriogonum umbellatum var. modocense A. A. Heller 1938-7-23 15190 Lassen 3 mi e Westwood Comment
  CAS-BOT-BC265096  Eriogonum umbellatum var. nevadense Louella Bass 1980-5-1 s.n. Lassen South side of Janesville on Hwy. 395, Sierra Nevada Comment
  CAS-BOT-BC265097  Eriogonum umbellatum var. nevadense Louella Bass 1983-6-10 3 -83 Lassen About 3 miles east of Susanville, Center Road near Leavitt Lane, Sierra Nevada Comment
  JEPS94109  Eriogonum umbellatum var. nevadense Vernon H. Oswald and Lowell Ahart 1998-5-22 9115 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
  UC1032336  Eriogonum umbellatum var. nevadense A. Simontacchi 1940-6-15 877 Lassen 1.6 mi ssw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1483832  Eriogonum umbellatum var. nevadense G. Schoolcraft 1979-7-5 126 Lassen 5.2 mi. from Horne Ranch Road (intersection up Observation Lookout Road) 2286 Comment
  UC584410  Eriogonum umbellatum var. nevadense G. L. Stebbins Jr. and J. A. Jenkins 1937-7-10 2310 Lassen w Milford (crest of range head of Stony Ridge); Stony Ridge 1930 Comment
  HSC103582  Eriogonum umbellatum var. polyanthum Thomas W. Nelson, Jane Nelson 1986-6-23 8147 Lassen Along State Route 44, 10.9 mi. SE of Old Station junction. 1585 Comment
  POM195124  Eriogonum vimineum D. D. Keck 1930-7-23 951 Lassen Susanville. 1280 Comment
  SEINET10299456  Eriogonum vimineum Gary Schoolcraft 1982-8-18 889 Lassen Along Doyle Grade Road west of Doyle Creek 1585 Comment
  SEINET3160096  Eriogonum vimineum subsp. vimineum L. S. Rose 1940-6-16 40596 Lassen Janesville 1280 Comment
  CDA38977  Eriophorum gracile Gordon Leppig and T. LaBanca 1997-6-29 531 Lassen Blue Lake Ranch; Modoc National Forest. Comment
  CAS-BOT-BC300341  Eriophyllum Ella Dales Cantelow 1941-5-22 s.n. Lassen N. of Litchfield. U.S. Hy 395. Lava Country Comment
  CDA20364  Eriophyllum lanatum D. Tillotson 1942-6-1 s.n. Lassen Modoc Plateau; Mud Flat Grade. 0 Comment
  CHSC23514  Eriophyllum lanatum Wayne O. Baum 1971-7-6 71 -48 Lassen E. slope of Gallatin Peak. 1950 Comment
  HSC28818  Eriophyllum lanatum D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19256 Lassen Harvey Valley near Cone Springs Comment
  CAS-BOT-BC308134  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-6-10 11889 Lassen 12 miles n. of Susanville on road to Horse Lake Comment
  CAS-BOT-BC308138  Eriophyllum lanatum var. achilleoides John Thomas Howell 1934-7-8 12481 Lassen Spalding's, Eagle Lake Comment
  CHSC117205  Eriophyllum lanatum var. achilleoides Lowell Ahart; John Dittes 2016-6-7 21004 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
  JEPS126470  Eriophyllum lanatum var. achilleoides Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-7-14 CA 350 -046 Lassen Drive North on Horse Lake Road. Comment
  UC1393123  Eriophyllum lanatum var. achilleoides John L. Strother 1970-5-23 956 Lassen about 6 mi n of Honey Lake 1280 Comment
  UC507011  Eriophyllum lanatum var. achilleoides George A. Fischer and Irwin H. Johnson 1933-7-14 F 250 Lassen Lassen Forest 1767 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
  CDA4968  Eriophyllum lanatum var. achilleoides T. C. Fuller 1963-6-1 10634 Lassen East side of road to Hall s Flat, 9.4 miles south of Pittville. 0 Comment
  CHSC106076  Eriophyllum lanatum var. grandiflorum Lowell Ahart; John Dittes 2010-7-31 17024 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
  CHSC59683  Eriophyllum lanatum var. integrifolium Mary Meyer 1980-5-7 Lassen Mesa between Pete's Creek. 1447 Comment
  PASA2212  Eriophyllum lanatum var. integrifolium Frank W. Peirson 1926-6-24 Lassen Several miles southward from the Madeline Plain Comment
  JEPS121272  Eryngium alismifolium Lowell Ahart, John Dittes 2013-7-22 18879 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
  UC648306  Eryngium alismifolium John Thomas Howell 1934-7-10 12542 Lassen Patterson Flats Comment
  CAS-BOT-BC41510  Erysimum asperum Geo. A. Fisher 1928-6-21 28 Lassen Lassen Forest. 1615 Comment
  UC1137587  Erysimum capitatum var. capitatum A. Simontacchi 1940-6-15 868 Lassen 0.6 mi wsw Blacks Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1184056  Erysimum perenne Jean Langenheim 1957-6-26 4398 Lassen from areas adjacent to 1937 chaparral quadrat (nw part of valley); Said Valley Comment
  JEPS79211  Erysimum repandum L. R. Heckard with R. C. Bacigalupi 1980-6-11 5247 Lassen 11.3 mi. n. Litchfield (along U.S. 395 s. of Deep Creek crossing, between R.R. & hwy.) 1463 Comment
  CHSC60856  Erythranthe breviflora Vernon H. Oswald; Lowell Ahart 1993-6-28 5609 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
  CHSC30599  Erythranthe guttata Marc Held 1972-6-23 9 Lassen Upper Murrer's Meadow along spring red stream. 4.5 miles south-east of E.L.B.S. (approx.). Comment
  CHSC7754  Erythranthe guttata Beverly J. Wise 1968-8-28 108 Lassen Edge of Crazy Harry Creek where crossed by Las. Co. Rd. 230, 6 mi. north of Hwy 36. 1645 Comment
  CHSC99532  Erythranthe guttata Lowell Ahart; John Dittes 2008-6-20 14978 -A Lassen Edge of vernal pools, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  SD7073  Erythranthe lewisii Mrs. R. M. Austin 1877-1 Lassen Spanish Peak Comment
  CHSC71102  Erythranthe suksdorfii Vernon H. Oswald; Lowell Ahart 1998-5-22 9123 Lassen Road to Summit of Fort Sage Mtns. 2.7 mi east of Fort Sage Rd., ca. 5 mi NE of Doyle. 1463 Comment
  SEINET10933162  Erythronium purpurascens Hall 1993-6-29 Hall 4294 Lassen Plants of Mount Lassen. Soupen Springs. 8000 feet. 2440 Comment
  CAS-BOT-BC403150  Eschscholzia californica A. M. Vollmer; L. Beane 1953-7-1 103 Lassen Along Halls Flat road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CAS-BOT-BC403149  Eschscholzia californica Elmer I. Applegate 1923-9-30 4033 Lassen Constantia Comment
  RSA59555  Eschscholzia californica E. K. Balls 1950-5-22 14828 Lassen 1 mile S of Milford, Hwy 395. 1280 Comment
  UC1562582  Eucephalus breweri Barbara Ertter 1988-7-25 7865 Lassen ca 10 airmi due s of, (ridge of Diamond Mts ca 1.5 mi e of Diamond Peak) Susanville; Diamond Mts. 2255 Comment
  SFV1478  Euclidium syriacum B. J. McCaskill 1966-6-5 712 Lassen Frosty Acres Ranch, at end of Albaugh Road, 0.6 miles west of its junction with Bassett Road (about 2 miles south of U. S. Highway 299 and 4 miles southwest of Adin). 1280 Comment
  CDA35315  Euphorbia crenulata T. C. Fuller 1963-6-12 10666 a Lassen 0.1 mile east of Clear Creek, northeast shore of Lake Almanor. 0 Comment
  UCSC000449  Euphorbia dictyosperma M. S. Baker 02 Julyunknown year s.n. Lassen South side of Dixey Mts. Lassen Mts. Comment
  CHSC115563  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart; John Dittes 2015-7-13 20312 Lassen Along levee road, about 300 yards south of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  JEPS97418  Euphorbia spathulata Vernon H. Oswald and L. Ahart 1995-6-19 6881 Lassen T30N R15E center Sect. 22, 4540 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395 1383 Comment
  CHSC117511  Euphorbia virgata Lowell Ahart; John Dittes 2016-7-13 21118 Lassen Along the drainage, about 100 yards south of the pond, 150 yards east of Stonebreaker Road, 0.6 miles south of County road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slop of Big Valley. 1289 Comment
  UC468921  Eurybia integrifolia Franklin P. Nutting Lassen Silver Lake Comment
  JEPS94086  Euthamia occidentalis Vernon H. Oswald and Lowell Ahart 1998-9-8 9579 Lassen Ash Creek and Big Swamp 2.2 mi. n. Bieber (on County Rd. 91 (Bieber-Lookout Rd.)); Ash Creek and Big Swamp 1258 Comment
  CAS-BOT-BC310646  Euthamia occidentalis G. Schoolcraft 1997-8-20 2698 Lassen On Susan River behind BLM office in Susanville 1264 Comment
  RSA0027354  Festuca John F. Emmel 1994-7-17 1329 Lassen Summit area of Observation Peak. 2378 Comment
  CAS-BOT-BC278432  Festuca idahoensis Clarence R. Quick 1961-6-21 61 -28 Lassen Adjacent to Road 21, Blacks Mountain Experimental Forest northeast of Lassen Peak 1798 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
  CHSC60932  Festuca idahoensis Vernon H. Oswald; Lowell Ahart 1993-7-8 5664 Lassen Pittville Rd. (Lassen 111, 36N01) 1.9 mi N of Hwy. 44, on the SE edge of Poison Lake. Woods between the road and the railroad. 1709 Comment
  UC1609257  Festuca idahoensis Vernon H. Oswald and Lowell Ahart 1993-6-28 5585 Lassen 1.2 mi n Hwy. 44 (e side of Grays Valley, e of Poison Lake); Grays Valley 1731 Comment
  UC60788  Festuca idahoensis J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Long Valley Honey Lake Valley Comment
  UCD66094  Festuca idahoensis C. R. Quick 1962-6-17 62- 30 Lassen Western Pacific RR, south of Halls Flat. 1706 Comment
  JEPS28299  Festuca rubra George W. Gillett 1957-7-29 947 Lassen between Butte Lake and Snag Lake; Lassen Volcanic National Park 1859 Comment
  UCD66360  Festuca rubra R. Tofsrud 1947-7-1 220 Lassen Cedar Cr. East of Madeline. Comment
  UCD66393  Festuca rubra A. L. Hormay 1941-6-26 27 Lassen Lassen National Forest. Westwood Junction. 1737 Comment
  JEPS97399  Floerkea proserpinacoides Vernon H. Oswald and L. Ahart 1995-7-24 7127 Lassen T30N R8E SE1/4 SW1/4 Sec. 7, 6300 ft, High Cascade Range, Red Fir Forest. N of Lake Almanor and ca. 2 mi SE of Silver Lake on Forest Route 10, 0.8 mi SW of its jct. with Forest Road 30N21 1920 Comment
  CAS-BOT-BC52512  Frangula californica subsp. californica C. L. Hitchcock 1940-5-26 6619 Lassen lava beds ca. 12 miles north of Fall River Mills (Shasta Co.) on Fall River 1371 Comment
  CAS-BOT-BC55731  Frangula rubra subsp. rubra John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49162 Lassen Elysian Valley northwest of Janesville 1325 Comment
  RSA523910  Frasera albicaulis Gordon H. True Jr. 1936-6-25 539 Lassen East of Harvey Ranger Station, Harvey Valley. 1768 Comment
  CHSC25565  Fritillaria pudica Robert A. Schlising 1977-4-4 3187 Lassen East of Eagle Lake Field Station, along dirt road at Murrers Upper Meadow. 1554 Comment
  JEPS4950  Fritillaria pudica Louise Scroggy 1918-3-24 Lassen 1/4 mi above Pit River (on Dixie Valley Road, 2 mi above Rocky Comfort School House in nw corner of Lassen Co., 15 mi n of boundary line); Dixie Valley Road Comment
  RSA121073  Galium bifolium L. R. Short, W. Gansberg 1936-6-2 S- 368 Lassen Lassen forest. MDM. 1851 Comment
  SEINET11616108  Galium boreale C. G. Gulling 1905-1 1542 Lassen Big Meadows Comment
  OBI75867  Galium triflorum Anthony Baniaga 2011-8-9 493 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1950 Comment
  CHSC27713  Gayophytum heterozygum Robert A. Schlising 1978-7-21 3318 Lassen E side of Eagle L., near Eagle Lake Field Station. 1578 Comment
  RSA768780  Gayophytum heterozygum L. Ahart, John Dittes 2010-7-31 17025 Lassen About 100 yards northeast of where the road crosses Hunsinger Draw, 1.9 air miles northwest of Moll Reservoir, 2.8 air miles west of Ash Valley, 8.4 air miles southeast of Adin. 1521 Comment
  RSA122206  Gayophytum humile L. R. Short, J. Warren 1936-6-23 S 450 Lassen Burgess Spr. Exp. Range, Lassen National Forest 1762 Comment
  POM38703  Gayophytum racemosum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  RSA715549  Gayophytum racemosum L. Ahart, John Dittes 2005-6-1 11884 Lassen Along a poor dirt road, west of Scott Road, Long Valley, about 2.5 air miles northwest of the intersection of Scott Road and Highway 70, 4.0 air miles northwest of Hallelujah Junction. 1439 Comment
  RSA271916  Gayophytum ramosissimum Christopher Davidson 1975-6-7 2759 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  RSA74475  Gayophytum ramosissimum Milo S. Baker 1936-6-16 8364 Lassen About 30 miles north of Susanville Comment
  SEINET4172075  Gayophytum ramosissimum M. J. Williams 1974-7-26 74 - L-32 Lassen 2 mi. west of Hallelujah Junction, south of Hwy 70 1494 Comment
  CAS-BOT-BC459350  Geum aleppicum Marcus E. A M Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC72970  Geum macrophyllum Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  CAS-BOT-BC143570  Geum triflorum A. G. Brenneis 1928-7-3 B 14 Lassen Lassen National Forest, Jesson Valley 1463 Comment
  CHSC64851  Geum triflorum Vernon H. Oswald 1995-6-26 6943 Lassen Modoc Plateau. Spooner Rd. ca. 0.3-0.4 mi e of its junction with Ash Valley Rd. (Lassen 527) in Ash Valley. 1542 Comment
  RSA702135  Geum triflorum L. P. Janeway 2004-6-26 8155 Lassen About 1.3 km. west-southwest of Patterson Flat, at junction of roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  SBBG70512  Geum triflorum var. ciliatum E. Rockwell -Jun-1925 934 Lassen Eagle Lake 1554 Comment
  JEPS94830  Gilia inconspicua Vernon H. Oswald and Lowell Ahart 1998-5-22 9107 Lassen 5 mi nne of Doyle (Road to ORV parking area in Fort Sage Mountains, 0.5 mi e of Fort Sage Road); Fort Sage Mountains 1371 Comment
  UC1776720  Gilia leptomeria G. Schoolcraft 1998-6-8 2732 Lassen Lower slopes of amedee in gravel pit 1249 Comment
  JEPS107831  Gilia modocensis Lowell Ahart, John Dittes 2005-6-2 11989 Lassen Along a small wash, west side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1427 Comment
  JEPS123845  Glyceria borealis Lowell Ahart, John Dittes 2015-7-14 20326 Lassen About 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 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
  SEINET8770761 Image available Gnaphalium palustre B. L. Wilson, D. Lytjen, N. Otting 2005-7-25 11474 Lassen Snowstorm Creek, upstream of Biscar Reservoir 1372 Comment
  CDA23424  Grayia spinosa S. E. Piper 1943-7-2 Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC5232  Grayia spinosa J. E. Wolf 1946-6-28 Lassen Eagle Lake. Horse Lake. 1554 Comment
  HSC104131  Grayia spinosa H. Chappel, J. Goldhammer 2002-5-30 - 2 Lassen Southeast of Susanville. 1248 Comment
  JEPS59821  Grayia spinosa W. L. Jepson 1918-8-4 7806 Lassen Horse Lake 1554 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
  SJSU3576  Grindelia nana C. L. Kline 1965-7-13 195 Lassen State Rte 299, 1 mi NE of Nubieber 1274 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
  SEINET12330175  Gymnosteris parvula M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -2 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale, 0.1 mi W Calif-Nev line Comment
  UCD119367  Hackelia amethystina G. Schoolcraft 1981-6-12 0456 Lassen Gold Run Rd., on lower slopes of Diamond Mtn., Susanville. 1889 Comment
  UC773869  Hackelia californica L. R. Short, J. Warren 1936-6-26 S 458 Lassen Burgess Spring Experiment Range; Lassen National Forest 1853 Comment
  UC24814  Hackelia cusickii M. S. Baker and Frank Nutting 1894-7-2 Lassen Dixey Mountains Comment
  RSA98051  Halogeton glomeratus Thomas H. Kearney, J. T. Howell 1951-8-20 28229 Lassen Honey Lake Valley near Herlong. 1280 Comment
  UCD98887  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
  CAS-BOT-BC305410  Helianthus annuus Verne Grant; Irving Schneider 1947-7-31 8215 Lassen Northeast quarter of George Williams section 19, Madeline Plain Comment
  CAS-BOT-BC305661  Helianthus cusickii David D. Keck; J. Clausen 1935-6-24 3739 Lassen 2 mi. S. of Ravendale 1464 Comment
  CAS-BOT-BC305665  Helianthus cusickii A. A. Heller 1938-6-23 15209 Lassen On the grade east of Mapes on U. S. Highway #395 1371 Comment
  RSA38474  Helianthus cusickii P. A. Munz 1947-5-19 11868 Lassen 27.7 miles south of Ravendale. 1311 Comment
  UC1051571  Helianthus nuttallii subsp. nuttallii Herbert L. Mason 1947-8-11 13492 Lassen w margin Lower Lake (Highway 81, n boundary of Lassen County with Modoc County) Comment
  SEINET10497129  Heliotropium curassavicum var. oculatum Mary Susan Taylor 1974-1 Taylor 269 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  SEINET11197274 Image available Hemizonella minima G. Schoolcraft 1997-6-26 2601 Lassen W of Hwy 395 between Janesville and Milford 1676 Comment
  HSC65632  Hesperochiron californicus J. P. Smith, J. O. Sawyer 1971-5-23 4661 Lassen Along Hwy. 139, 15 mi. S of jct. with rd. to Thermo Comment
  JEPS1678  Hesperochiron californicus G. S. Crew and C. S. Robinson 1927-1 10 Lassen <Norval> Flat near Westwood Junction; Lassen Forest 1747 Comment
  JEPS94598  Hesperochiron californicus Vernon H. Oswald and Lowell Ahart 1997-5-27 8525 Lassen on Forest Route 38N04 4.7 mi ne Hwy. 139; Coyote Flat 1798 Comment
  UC1037238  Hesperochiron californicus Leo Whitney 1935-6-20 3253 Lassen Lassen Nat'l Forest, Fruit Grower's Supply Company, Camp 10 Comment
  JEPS27189  Hesperolinon micranthum Lauramay T. Dempster 1961-6-17 1682 Lassen Hwy 395 just w Tule Mountain 1645 Comment
  UC1094379  Hesperolinon micranthum R. C. Bacigalupi with S. Galen Smith 1957-6-28 5995 Lassen 6.0 mi n Madeline (on Highway 395) 1676 Comment
  JEPS96087  Heterocodon rariflorum Vernon H. Oswald and Lowell Ahart 1996-6-24 7859 Lassen 2.5 mi s Eagle Lake (ca 0.5 mi e of Eagle Lake Rd, w side Papoose Meadows, ca 0.4 mi s of the cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UCR244106  Heterotheca villosa Jim Andre, G. L. Clifton 1993-6-9 19697 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
  NY783486  Heuchera rubescens G. Schoolcraft 1979-6-21 82 Lassen Wendel Canyon 1585.0 Comment
  POM360431  Hieracium albiflorum Rockwell 1925-7-1 s.n. Lassen Eagle Lake Comment
  OBI77185  Hieracium greenei Anthony Baniaga 2011-7-18 454 Lassen Lassen NF.2-1/4 mi ESE of Signal Butte. Swains Hole quad. T32N R6E sec 9 NE of SW 1700 Comment
  CAS-BOT-BC318713  Hieracium horridum Wm. Bridge Cooke 1938-9-17 11703 Lassen Canyon below Horse Camp, Mount Shasta 2133 Comment
  JEPS103187  Hieracium scouleri G. Schoolcraft 2000-7-5 2911 Lassen On slopes of Shinn Mountain 2011 Comment
  HSC63966  Holodiscus microphyllus var. glabrescens Teresa Prendusi 1980-7-10 Lassen N face of Little Fredonyer Peak, above Horse Lake 1768 Comment
  CHSC80544  Holosteum umbellatum subsp. umbellatum Vernon H. Oswald 2001-5-4 9997 Lassen Ash Creek Wildlife Area, Wayman Barn at the west end of Hunt Rd. 1267 Comment
  JEPS114655  Holosteum umbellatum subsp. umbellatum Lowell Ahart, John Dittes 2008-6-20 14922 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
  RSA755003  Holosteum umbellatum subsp. umbellatum L. Ahart, John Dittes 2008-6-20 14922 Lassen About 10-100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 air miles northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 air miles northeast of Bieber. 1264 Comment
  UCD85277  Hordeum brachyantherum A. A. Beetle 1941-6-28 2800 Lassen 10 miles W of Chester. 1524 Comment
  UCD85479  Hordeum brachyantherum L. Whitney 1933-8-2 s.n. Lassen Near Slate Creek. 1889 Comment
  SEINET10663525  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald, Lowell Ahart 1999-6-9 Oswald 9751 Lassen T31N R15E SE 1/4 Sect. 18. Northeast of Susanville on County Rd. 216 at Biscar Wildlife Management Area. Comment
  CAS-BOT-BC284714  Hordeum jubatum John Thomas Howell; Gordon H. True 1973-8-1 50198 Lassen Ca. 3 miles se. of Diamond Mt., summit of Diamond Range south of Susanville 2194 Comment
  CHSC65367  Hordeum jubatum Vernon H. Oswald; Lowell Ahart 1995-8-14 7189 Lassen Modoc Plateau. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville. Roadside pond. 1645 Comment
  HSC10190  Hordeum jubatum M. T. Milligan 1964-8-6 200 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  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
  UC1024786  Hordeum jubatum Leo Whitney 1933-8-16 2237 Lassen Eagle Lake Lassen National Forest, Eagle Lake 1584 Comment
  UC790984  Hordeum jubatum A. A. Beetle 1941-6-28 2808 Lassen 6 mi s Ravendale; lower slopes Observation Peak Comment
  UC1542925  Horkelia fusca subsp. parviflora G. Schoolcraft 1987-6-23 1753 Lassen Ash Valley RNA 1554 Comment
  RSA14933  Horkelia fusca subsp. tenella J. T. Howell 1934-7-6 12433 Lassen Harvey Valley Comment
  CAS-BOT-BC213004  Hosackia crassifolia John Thomas Howell; Gordon H. True 1973-7-31 50036 Lassen In areas of granitic rock on road from Janesville to Thompson Peak, Diamond Range 1737 Comment
  NY170060  Hutchinsia procumbens A. Tiehm 1980-5-29 5749 Lassen N end of Honey Lake Valley, just N of Hot Springs, 1.1 air mi NNW of Wendel. 1231.4 Comment
  CHSC21234  Hydrophyllum capitatum var. alpinum F. Tom Griggs; Robert A. Schlising 1974-5-30 3135 Lassen West side of Colman Lake, at margins of meadow. 1950 Comment
  CHSC30619  Hydrophyllum capitatum var. alpinum Eric Miller 1975-6-24 10 Lassen N. E. corner of Deans Meadow, 15 ft. off dirt road. 1956 Comment
  RSA122624  Hydrophyllum capitatum var. alpinum L. R. Short 1936-4-28 S- 333 Lassen MDM, Burgess Spr. Exp. Range. 1753 Comment
  NY170062  Hymenolobus procumbens A. Tiehm 1986-5-12 10350 Lassen 1 road mi W of the state line on the dirt road from highway 395 to Smoke Creek, south side of Rush Creek. 1341.1 Comment
  UC19030  Hypericum anagalloides M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek 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
  RSA746512  Hypericum perforatum K. M. Meyer, A. Townesmith 2007-7-19 140 Lassen Lassen National Forest. CA, 0.2 mi. on 29N03, off HWY 36 on pullout just past a dry creek. 1459 Comment
  NY52522  Iliamna bakeri G. Schoolcraft 1984-8-27 1371 Lassen Eastern slopes of Little Hat Mtn. 1981.2 Comment
  SDSU7494  Iliamna bakeri D. F. Howe 1964-8-2 3924 Lassen Hillside above Parsnip Creek, Warner Mts., Modoc National Forest 1829 Comment
  CDA35742  Iliamna bakeri D. R. Hill & L. Wheeler 1968-7-15 Lassen Pat Morris Rd & Highway 139 to Adin, 30 miles north of Susanville. 0 Comment
  UC908152  Ipomopsis aggregata Loyd Swift 1928-6-12 Lassen Hall's Flat Lassen National Forest Comment
  CHSC6203  Ipomopsis aggregata subsp. formosissima P. Balch 1955-7-17 Lassen Eagle Lake. Mouth of Papoose Creek, near Gallatin Beach. 1561 Comment
  CHSC59781  Ipomopsis congesta Mary Meyer 1980-7-15 Lassen Found in ash barrens. 1546 Comment
  UC506920  Ipomopsis tenuituba George A. Fischer and Irwin H. Johnson 1933-7-14 F 256 Lassen Lassen National Forest 1783 Comment
  CHSC25745  Iris tenuissima subsp. purdyiformis John Steiner 1977-6-14 74 Lassen Lassen Volcanic National Park. 250 m ne Manzanita Lake, 250 m e park boundary. 1768 Comment
  CAS-BOT-BC69981  Isoetes bolanderi John Thomas Howell 1959-9-23 34891 Lassen Juniper Lake Campground, Lassen Park. 2057 Comment
  RSA0025413  Isoetes nuttallii Forrest Freund 2013-5-23 194 Lassen HWY 44. Near pond on the south west side of the road, in open patches. 1716 Comment
  HSC28862  Iva axillaris D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19298 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  UC177069  Iva axillaris subsp. robustior T. S. Brandegee 1892-6-25 Lassen Honey Lake Honey Lake Comment
  RSA0011495  Iva axillaris subsp. robustior R. F. Thorne, Larry E. DeBuhr 1975-8-22 46970 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line. 1616 Comment
  CDA20368  Iva axillaris var. robustior D. Tillotson 1942-6-9 s.n. Lassen Modoc Plateau; Mud Flat. 0 Comment
  UC1587074  Juncus balticus G. Schoolcraft 1991-7-31 2204 Lassen Cottonwood Spring Shinn Mtn. 2042 Comment
  RSA0011564  Juncus bufonius Robert F. Thorne, Larry E. DeBuhr 1975-8-22 46988 Lassen Along Highway 395 ca. 6 miles north of Madeline and 4.5 miles south of Modoc county line 1616 Comment
  CHSC117204  Juncus bufonius var. occidentalis Lowell Ahart; John Dittes 2016-6-7 20988 Lassen West edge of pond, 120 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  JEPS107804  Juncus bufonius var. occidentalis Lowell Ahart, John Dittes 2005-6-2 11958 Lassen Meadow, along a poor dirt road, about 1 mile east of the Anderson Ranch home, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  CHSC66416  Juncus dudleyi Vernon H. Oswald; Lowell Ahart 1996-6-17 7817 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Modoc Plateau. On the edge of a marshy pool at the 6.0 mile post E of Devils Corral Trailhead. 1420 Comment
  UC1608994  Juncus hemiendytus var. hemiendytus Vernon H. Oswald and Lowell Ahart 1993-6-3 5483 Lassen Champs Flat Rd (Lassen 105, Forest 32N28Y), 2.4 mi n of its jct with Lassen 21 (32N02) to Eagle Lake (on w edge of Pine Creek Valley, between Poison Lake and Susanville); Pine Creek Valley 1728 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
  JEPS28702  Juncus nevadensis George W. Gillett 1957-7-28 924 Lassen above trail to Widow Lake junction with Snag Lake trail (at upper end of Butte Lake); Lassen Volcanic National Park, Butte Lake 1859 Comment
  POM110894  Juncus orthophyllus Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1601833  Juncus parryi M. S. Baker and Frank Nutting 1894-7-30 Lassen Silve Lake Silver Lake Comment
  UC1601837  Juncus parryi M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  UC1133725  Juncus sphaerocarpus A. Simontacchi 1940-6-5 815 A Lassen 8.3 mi wnw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quad. 1737 Comment
  CHSC117212  Juncus tiehmii Lowell Ahart; John Dittes 2016-6-7 20989 Lassen West edge of pond, near spillway 5 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  HSC101239  Juncus trilocularis Peter Zika 2008-7-14 23893 Lassen South side of Route 44, SE end of Grays Valley near Lodgepole 1730 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
  RSA699964  Juncus trilocularis L. P. Janeway 2001-6-20 7192 Lassen High Cascade Range. South side of the junction of the 22 road and Road 34N41; about 5.6 km south of Dixie Valley and 8.9 km north of Harvey Mountain. 1560 Comment
  UCR263355  Juncus trilocularis Peter F. Zika 2008-7-14 23893 Lassen Cascade Range Highlands, south side of Route 44, southeast end of Grays Valley near Lodgepole 1730 Comment
  CHSC117193  Juncus uncialis Lowell Ahart; John Dittes 2016-6-7 20990 Lassen 50 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
  SD139428  Juniperus grandis F. C. Vasek 1962-9-3 day 2 Lassen State highway 36, 3.6 miles west of Ranger Station, west of Susanville 1525 Comment
  CHSC12465  Juniperus occidentalis Robert W. Severin 1969-6-20 53 Lassen E. L. B. S., 150' n Vesta Holt Hall. 1566 Comment
  UC1136938  Juniperus occidentalis L. R. Short 1936-9-30 S- 508 Lassen Burgess Spr. Exp. Range Lassen Forest, Burgess Spr. Exp. Range 1828 Comment
  UC766732  Juniperus occidentalis R. F. Hoover 1940-9-21 4606 Lassen 4 mi w Susanville Comment
  CAS-BOT-BC81269  Juniperus occidentalis var. australis John Thomas Howell 1976-7-19 51945 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA647569  Juniperus occidentalis var. occidentalis Marion P. Harthill 1972-6-17 812 Lassen Ravendale 1768 Comment
  UCD133871  Juniperus osteosperma John Thomas Howell 1961-9-26 36969 Lassen Beckworth Pass east side. 1554 Comment
  UCR148843  Juniperus osteosperma David A. Charlet 1993-7-13 1581 Lassen Great Basin, Fort Sage Mountains at O.H.V. trailhead 1491 Comment
  SEINET5334994  Juniperus osteosperma J. T. Howell 1961-9-26 36969 Lassen East side of Beckwith Pass 1554 Comment
  CHSC23744  Kelloggia galioides M. S. Taylor 1974-7-10 273 Lassen Scattered on W side of Gallatin Beach Rd, ca. 3 mi S of Gallatin Beach on Eagle Lake, ca 12 mi NW of Susanville. 1524 Comment
  UC1136752  Kelloggia galioides George A. Fischer and Irwin H. Johnson 1933-7-14 255 Lassen Lassen National Forest 1783 Comment
  UC1374967  Kelloggia galioides Noel H. Holmgren, John J. Fay, and Barton L. Bethers 1970-6-24 4374 Lassen 2 mi w Westwood (at edge of airstrip) 1554 Comment
  UC1483816  Kelloggia galioides G. Schoolcraft 1981-7-28 337 Lassen s of Blue Lake (Bureau of Land Management) 2072 Comment
  UC773943  Kelloggia galioides L. R. Short and D. Gish 1936-6-10 S- 379 Lassen Burgess Spring Experiment Range; Lassen National Forest 1813 Comment
  CAS-BOT-BC180801  Kochia scoparia Louella Bass 1981-12-1 s.n. Lassen Standish Comment
  CHSC99520  Koeleria macrantha Lowell Ahart; John Dittes 2008-6-19 14896 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
  UCD85987  Koeleria macrantha R. Tofsrud 1947-7-1 214 Lassen 13 miles E of Madeline. Comment
  CHSC5032  Lactuca serriola L. B. Barlow 1967-7-6 96 Lassen 2 mi. west of Murrer's Ranch turn off, 14.9 mi. north of Susanville, Highway 139. 1463 Comment
  CAS-BOT-BC340511  Lactuca serriola Margaret Williams; Steven Williams 1974-7-26 74 -L-6 Lassen Near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC349842  Lactuca tatarica subsp. pulchella Gary Schoolcraft 1986-9-4 1669 Lassen Along n. shore of Eagle Lake 33-12-30 1554 Comment
  CAS-BOT-BC341484  Lagophylla ramosissima John Thomas Howell 1934-6-10 11863 Lassen Honey Lake Valley, 37 miles s. of Susanville Comment
  JEPS117573  Lagophylla ramosissima Lowell Ahart, John Dittes 2010-7-31 16997 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
  UCR67436  Lagophylla ramosissima George K. Helmkamp 1990-9-23 A- 10 Lassen Northern Sierra Nevada Mountains, 3 mi east of Susanville, along State Road 36 1345 Comment
  CAS-BOT-BC341480  Lagophylla ramosissima Margaret Williams 1974-7-27 74 -L-62 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CDA18264  Lagophylla ramosissima subsp. ramosissima G. D. Barbe 1974-8-2 1926 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 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
  JEPS114637  Lasthenia glaberrima Lowell Ahart, John Dittes 2008-6-20 14901 Lassen Sides of a vernal pool, about 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  JEPS89759  Lasthenia glaberrima Dean Wm. Taylor with Robert A. Price 1988-6-4 9771 Lassen 6 mi e of MacArthur (along Highway 299 at crossing of Frazer Creek, Fall River Valley, Pit River Watershed); Fall River Valley, Pit River Watershed 1036 Comment
  RSA0035916  Lasthenia glaberrima Lowell A. Ahart, John Dittes 2008-6-20 14901 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  UC1573178  Lasthenia glaberrima Dean Wm. Taylor with Glenn L. Clifton, Rexford E. Palmer and Roy Buck 1988-6-6 9004 Lassen road from Bieber to Lookout (.5 mi s of the Modoc County Line); Pit River Watershed, Big Valley 1249 Comment
  CHSC92742  Lathyrus nevadensis var. nevadensis L. P. Janeway 2005-7-3 8451 Lassen High Cascade Range. Junction of Road 35N38 (road to Blacks Ridge Lookout Tower) and Road 22; 3.7 air km north-northwest of the lookout. 1536 Comment
  CAS-BOT-BC321496  Layia glandulosa Clare B. Hardham 1961-6-16 7486 Lassen Gold Run Creek, S of Susanville. Comment
  CHSC106679  Layia glandulosa B. Ignacio 2008-5-3 Lassen Fort Sage Mountains. 1520 Comment
  CHSC59691  Layia glandulosa Mary Meyer 1980-4-24 Lassen Shaffer Mt. 1432 Comment
  UCD55163  Layia glandulosa Ellen Dean 2006-5-15 3051 Lassen E of town of Susanville. Along C.R. A27 (Center Rd.) Grounds of California Correctional Facility. 1248 Comment
  CAS-BOT-BC321497  Layia glandulosa Margaret Williams 1974-7-27 74- 2 -51 Lassen Burned area near Hallelujah Junction, W of Hwy 395 and S of Hwy 70 1493 Comment
  POM361661  Layia glandulosa subsp. glandulosa Christopher Davidson 1975-6-7 2752 Lassen 1 mi E of Beckwourth Pass on Hwy 70. 1524 Comment
  JEPS89219  Lemna minuscula Mrs. R. M. Austin June, 1894 Lassen Cold Springs, Willow Creek Valley Willow Creek Valley; North East California, Cold Springs, Willow Creek Valley Comment
  CHSC99242  Lemna minuta Lowell Ahart; John Dittes 2008-6-22 15022 Lassen On shallow water, south side of the levee, about 50 yards east of the tall poles, mountain meadow, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  UC1101286  Lemna turionifera Malcolm A. Nobs, S. Galen Smith 1949-7-21 1051 Lassen 1 mi e of Madeline Comment
  CAS-BOT-BC534922  Lemna turionifera Peter H. Raven; Otto T. Solbrig 1958-6-17 13261 Lassen Ditch along United States Highway 395, 2.1 milesnorth-east of Standish Comment
  CHSC71871  Lepidium appelianum Vernon H. Oswald; Lowell Ahart 1998-9-8 9580 Lassen Ash Creek and Big Swamp 2.2 mi north of Bieber on County Road 91 (Bieber-Lookout Rd.). Roadside. 1258 Comment
  POM94542  Lepidium dictyotum Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1616 Comment
  CAS-BOT-BC12813  Lepidium perfoliatum John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49209 Lassen Sierra Nevada. Elysian Valley northwest of Janesville. 1325 Comment
  CHSC36444  Lepidium perfoliatum Jeffrey R. Peek 1982-6-1 22 Lassen Ca. 2 mi e jct Hwy 139 and Ravendale Rd. Ca. 10 yd e of Ravendale Rd. Comment
  JEPS17738  Lepidium perfoliatum Rimo Bacigalupi with G. T. Robbins 1955-7-21 5420 Lassen 6.8 mi e Smoke Creek Ranch Rd. jct with U.S. Hwy 395 (along Smoke Creek Ranch Rd, center of Bull Flat); Bull Flat 1402 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
  JEPS95756  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
  UC1609178  Leptodactylon pungens Vernon H. Oswald and Lowell Ahart 1993-6-28 5594 Lassen Harvey Lake Rd. (33N02) 2.0 mi n of Hwy 44 e Poison Lake (e side of Grays Valley); e of Poison Lake, e side Grays Valley 1731 Comment
  CHSC4771  Leptosiphon harknessii R. Carter 1967-6-27 562 Lassen Ca. 10 yds. off n side of rd., 1.75 mi w of Eagle Lake Biology station. 1584 Comment
  CHSC60758  Leptosiphon harknessii Vernon H. Oswald; Lowell Ahart 1993-6-14 5516 Lassen Eagle Lake Rd. (Lassen A1), 0.5 mi SW of Spaulding Tract Rd. (Rd. 518, 33N89), ca. 3 mi W of Eagle Lake. 1810 Comment
  CHSC6205  Leptosiphon harknessii R. Gein 1946-6-25 Lassen Webbs Camp, Eagle Lake. 1554 Comment
  GMDRC6950  Leptosiphon harknessii J. M. Andre, T. La Doux, Senna & 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. 1733 Comment
  POM253335  Leptosiphon harknessii A. A. Heller 1939-7-28 15299 Lassen About a mile east of Westwood in the Arid Transition Life zone 1524 Comment
  POM364710  Leptosiphon harknessii J. T. Howell 1934-6-10 11844 Lassen Near Plumas Junction Comment
  CHSC7659  Leucocrinum montanum Beverley J. Wise 1969-4-10 Lassen 4 mi. south of Susanville on Las. Co. Rd. 204. 1310 Comment
  UC1483858  Leucocrinum montanum G. Schoolcraft 1979-5-3 17 Lassen about 1 mi s Ravendale (at intersection of Horse Lake Road and Hwy 395) 1615 Comment
  CAS-BOT-BC508365  Leucocrinum montanum G. Schoolcraft 1988-5-11 1794 Lassen Along Hwy. 139 n. of Said Valley Reservoir 1676 Comment
  SEINET12044970  Leucocrinum montanum R. M. Austin 1879-1 s.n. Lassen Pine Creek Comment
  SEINET3887154 Image available Leucocrinum montanum D. W. McNeal 1981-5-10 2488 Lassen Beside Hwy. #395, 4.3 mi. S. of Ravendale.; 0 Comment
  HSC75895  Lewisia nevadensis D. H. Norris, S. Dowty, Thomas W. Nelson 1971-6-22 19194 Lassen Harvey Valley near Cone Springs Comment
  JEPS94607  Lewisia nevadensis Vernon H. Oswald and Lowell Ahart 1997-5-27 8523 Lassen 3.6 mi ne Hwy. 139 (along draw crossing Forest Route 38N04 (between Hwy 139 between Willow Creek Guard Station and Coyote Flat)); Coyote Flat draw 1731 Comment
  UC1583992  Lewisia nevadensis G. Schoolcraft 1990-5-15 2044 Lassen 3 mi s Nubieber; John's Valley 1402 Comment
  CAS-BOT-BC283773  Leymus cinereus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-11 16336 Lassen 13.5 miles E of Susanville Comment
  UC593547  Leymus cinereus E. B. Babcock and G. L. Stebbins Jr. 1936-6-8 1779 Lassen 4 mi s Ravendale (e-facing slope of creek at n end of Valley); Secret Valley 1371 Comment
  UCD64241  Leymus cinereus L. Whitney 1933-7-16 Lassen Harvey Mt., Lassen Forest. 1828 Comment
  UCD64266  Leymus cinereus A. H. Shunk 1923-7-28 Lassen Madeline. Comment
  RSA126617  Leymus condensatus H. S. Yates 1936-8-12 6086 Lassen McKenzie Meadows 1524 Comment
  RSA299171  Leymus triticoides J. T. Howell 1974-7-9 50467 Lassen Susanville 1296 Comment
  UC1037091  Leymus triticoides Leo Whitney 1933-7-5 2215 Lassen ca 8 mi nw Eagle Lake; Lassen National Forest, Slate Creek 1920 Comment
  UCD65590  Leymus triticoides R. Tofsrud 1947-7-1 218 Lassen Near Thermos. Comment
  UCD65617  Leymus triticoides L. Whitney 1933-8-4 2128 Lassen Lassen National Forest. Sheepshead, ca. 10 miles NW of N end of Eagle Lake. 1889 Comment
  UCD86642  Leymus triticoides J. Earl Coke 1931-6-1 s.n. Lassen Lassen County. 1524 Comment
  SD2783  Limnanthes douglasii Mary S. Snyder 1894-4-28 Lassen Lassen 518 Comment
  CHSC66264  Limosella acaulis Vernon H. Oswald; Lowell Ahart 1996-6-24 7853 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau. 1633 Comment
  CHSC29863  Limosella aquatica Robin L. Ondricek 1978-8-9 124 Lassen At the ne edge of Mahogany Lake. 2057 Comment
  RSA772871  Limosella aquatica Robert F. Thorne, Larry E. DeBuhr 1975-8-22 47205 Lassen Along Highway 395 ca. 5 miles north of Madeline and ca. 5.5 miles south of Modoc county line. 1616 Comment
  CAS-BOT-BC332738  Linanthus R. F. Thorne; Larry E. DeBuhr 1975-8-22 46973 Lassen Along Hwy 395 ca 6 miles N of Medeline and 4.5 miles S of Modoc county line 1615 Comment
  SEINET10496792  Linanthus ciliatus Mary Susan Taylor 1974-1 Taylor 284 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC29901  Linanthus pungens Robin L. Ondricek 1978-6-27 75 Lassen At Brockman Flat Lava Beds. 1584 Comment
  CDA6345  Linaria genistifolia subsp. dalmatica T. C. Fuller 1968-6-12 17236 Lassen Corut Street & Miller Road, southwest Susanville. 0 Comment
  CHSC106064  Linum lewisii var. lewisii Lowell Ahart; John Dittes 2010-7-31 16981 Lassen Dry meadow 10 yards northeast of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC4431  Linum lewisii var. lewisii K. R. Stern 1967-7-1 2472 Lassen Ca. 2 mi. S of S end of Eagle Lake. 1676 Comment
  SEINET10483062  Lithophragma brevilobum Mary Susan Taylor 1974-5-4 Taylor 228 Lassen Between Eagle Lake Field Station and the marsh area ca. 1/4 mi N of the station, E side of Eagle Lake, N of Susanville. Comment
  CHSC61177  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1993-5-12 5385 Lassen Hwy. 44 between Old Station and A21 (to Westwood), at a cattle guard 1.6 mi NW of Rd. 32N08 to Crater Lake. 1751 Comment
  CHSC68872  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1997-6-24 8641 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
  JEPS47654  Lithophragma parviflorum T. S. Brandegee 1892-7-2 Lassen Susanville Comment
  JEPS87440  Lithophragma tenellum Vernon H. Oswald and Lowell Ahart 1993-6-3 5478 Lassen Champs Flat Rd (Lassen 21/105, Forest 32N02), 3.7 mi n Hwy 44 at spur rd 32N02E (between Poison Lake and Susanville, se side of Pine Creek Valley); Pine Creek Valley, btw Poison Lake and Susanville 1731 Comment
  CDA42915  Lithospermum arvense L. Ahart, John Dittes 2012-7-11 18351 Lassen North edge of a farmed field, on the south side of the highway, about 100 yards east of Cable Road and Pittville Road, 2.16 miles (air) north-northeast of Pittville, 3955 feet east of Lassen-Shasta County Line, Fall River Valley. Comment
  UC1136831  Lithospermum ruderale George A. Fischer and Irwin H. Johnson 1933-7-19 F 262 Lassen Lassen; Sec. 2 1783 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
  CHSC1962  Lomatium bicolor J. Wakeman 1963-5-11 Lassen Bieber. 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
  HSC81652  Lomatium macrocarpum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6028 Lassen Ash Valley, along branch road off Adin-Madeline Rd. just S of bridge over Ash Creek, 16 mi. SE of Adin, 200 yds. SE of main road. 1555 Comment
  SEINET7063559  Lomatium macrocarpum A. G. Vestal 1947-4-5 s.n. Lassen Hidden Valley south of Route 139. UTM Zone 11, 702975mE, 4478192mN. (WGS84/NAD83). 1295 Comment
  UCD127690  Lomatium macrocarpum Richard R. Halse 1977-5-22 1549 Lassen U.S. Highway 395, 9.5 miles north of Madeline. 1490 Comment
  CHSC67148  Lomatium nevadense var. nevadense James D. Jokerst 1991-5-29 3307 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
  JEPS96076  Lomatium nevadense var. nevadense Vernon H. Oswald and Lowell Ahart 1996-6-24 7862 Lassen 2.5 mi. s. Eagle Lake (Papoose Meadows, ca. 0.5 mi. e. of Eagle Lake Rd. (A1), w. side of the meadow ca. 0.4 mi. s. of cabins); Modoc Plateau, Papoose Meadows 1633 Comment
  UC1520662  Lomatium nevadense var. nevadense Noel H. Holmgren and Patricia K. Holmgren 1980-7-4 9513 Lassen 18 km. (11 mi.) airline distance e. Ravendale (s. side Observation Peak); Observation Peak Comment
  UC773965  Lomatium nevadense var. parishii L. R. Short and Wm. Gansberg 1936-6-8 S- 400 Lassen Lassen Forest, Burgess Spring Exp. Range 1783 Comment
  CHSC108004  Lomatium nudicaule Lowell Ahart; John Dittes 2011-6-20 17497 Lassen About 40 yards east of the stream, about 300 yards north of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC29850  Lomatium nudicaule Robin Ondricek 1978-6-7 42 Lassen Lower Dry Lake along outer edges of shoreline. 1645 Comment
  CHSC60807  Lomatium nudicaule Vernon H. Oswald; Lowell Ahart 1993-6-28 5617 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
  UC1123088  Lomatium nudicaule A. Simontacchi 1940-6-13 857 Lassen 3.3 mi. w.-s.w. Patterson Mt.; Lassen Nat'l Forest, Halls Flat Quad. Comment
  CAS-BOT-BC217796  Lomatium ravenii B. Bartholomew; M. Gilbert; L. Skog 1993-5-13 6558 Lassen Just S of Ravendale 1580 Comment
  CAS-BOT-BC217797  Lomatium ravenii Lincoln Constance; E. DiFulvio 1962-4-16 3747 Lassen 1 mile S of Ravendale 1615 Comment
  CHSC27666  Lomatium ravenii Robert A. Schlising 1978-7-2 3309 Lassen Ca 1.5 mi S Ravendal, near jct hwy 395 and horse Lake Road; large population between Horse Lake Road and S. Pac. RR tracks. 1621 Comment
  UC1187686 Image available Lomatium ravenii Tracey and Viola Call 1961-5-30 2048 Lassen ca. 2 mi. s. Ravendale 1463 Comment
  UC1559672 Image available Lomatium ravenii Gary Schoolcraft 1988-5-4 1792 Lassen ca. 3 mi. s.e. Ravendale 1615 Comment
  JEPS126472  Lomatium triternatum Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemsky 2015-6-15 CA 350 -045 Lassen Take Ramhorn Road past campsite for approximately 10-15 miles. Turn left as the fork and continue on for about 3 miles. Comment
  POM78598  Lomatium triternatum Marcus E. Jones 1897-6-26 s.n. Lassen Susanville, Perkin s Ranch. 1463 Comment
  CHSC13733  Lomatium triternatum var. macrocarpum C. Freeman 1973-6-27 7 Lassen Collected roadside ca. 1 mi n of the road crossing. Comment
  CHSC29875  Lomatium triternatum var. macrocarpum Robin L. Ondricek 1978-6-6 31 Lassen Ca. 1 mi from ELFS where the power lines cross the road. 1572 Comment
  SEINET222482  Lomatium triternatum var. macrocarpum Noel H. Holmgren, Patricia K. Holmgren 1978-6-11 8930 Lassen Upper Smoke Creek south side of Observation Peak 7.6 km northeast of Tye Patch Canyon summit 18.5 km airline distance 1700 Comment
  JEPS127567  Lomatium vaginatum L. P. Janeway, B. Castro 2015-6-5 11773 Lassen Great Basin, Modoc Plateau. Along Tuledad Road (County Road 506) 4.7 road-km south of the junction at the west end of Tuledad Canyon; 2.6 air-km east-northeast of Dodge Reservoir. Buckhorn Lake 7.5' Quad, Comment
  UC1390555  Lomatium vaginatum Maynard Moe Aug 1970 278 Lassen about 0.6 mi S of Madeline (Hwy 395) 1615 Comment
  JEPS13678  Lonicera conjugialis W. L. Jepson 1910-6-11 4119 Lassen Snag Lake 1889 Comment
  JEPS126485  Lotus corniculatus Valda Lockie, Lillie Pennington, Jillian Pastick, Rachael Payer, Andrea Stuemky 2015-7-16 CA 350 -049 Lassen Take Smoke Creek Road to Sand Pass Road. Turn left at Parker Reservoir. Comment
  UC80913  Lotus crassifolius var. crassifolius unknown 1892-7-1 Lassen Susanville Comment
  UC1567406  Lotus denticulatus G. Schoolcraft 1989-6-5 1896 Lassen s of Adin (intersection of Hwy 139 and A2) 1341 Comment
  RSA406186  Lotus humistratus W. Hutchinson 1925-7-1 s.n. Lassen Lassen Comment
  JEPS88234  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1996-6-17 7818 Lassen ca. 7 mi. w. Susanville (Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36, at 6.0 mi. post e. of Devils Corral Trailhead, Modoc Plateau); Modoc Plateau, Bizz Johnson Trail 1420 Comment
  UC1523783  Lotus oblongifolius var. oblongifolius Gary Schoolcraft 1981-7-14 534 Lassen s of Pittville (along Beaver Creek); Beaver Creek 1158 Comment
  NY716010  Lotus purshianus A. G. Jones 1984-8-11 6876 Lassen Along Road 395, near Doyle 1350 Comment
  UC1776700  Lotus purshianus G. Schoolcraft 1992-8-11 2247 Lassen Along Hwy 395 near Janesville Grade intersec 1280 Comment
  UC862219  Lotus purshianus var. purshianus A. A. Heller 1938-7-28 15300 Lassen just e Westwood Comment
  HSC23526  Lotus salsuginosus R. Carter 1967-6-27 554 Lassen 10 yds. off N side of rd., 1.75 mi. W of Eagle Lake Biology Station 1585 Comment
  NY716012  Lotus tenuis G. Schoolcraft 1988-7-7 1819 Lassen Near creek crossing northwest of Horne Ranch 1646 Comment
  CHSC110911  Ludwigia palustris Lowell Ahart; John Dittes 2012-7-9 18291 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC198254  Lupinus John Thomas Howell 1976-7-19 51949 Lassen Southwest of Susanville on Gold Run Road 1341 Comment
  RSA0027355  Lupinus John F. Emmel 1994-7-17 1330 Lassen Summit area of Observation Peak. 2378 Comment
  RSA0028052  Lupinus John F. Emmel 1996-7-14 1426 Lassen Long Valley; between Hwy. 395 and railroad tracks at south edge of Doyle. 1305 Comment
  CHSC30579  Lupinus arbustus Sori H. Shad 1970-7-9 45 Lassen Found at edge of Dean's Meadow. 1828 Comment
  SEINET12765226  Lupinus arbustus Vernon H. Oswald 1997-6-24 8635 Lassen South of Susan ville near the small pond on the crest of Diamond Mtn. about midway between Aspen Flat and Red Rock Lookout.; 0 2249 Comment
  UC619268  Lupinus arbustus J. and H. W. Grinnell 1938-6-13 1100 Lassen Sage flat near Ravensdale; Sage Flat near Ravensdale 1554 Comment
  NY732863  Lupinus arbustus subsp. calcaratus G. Schoolcraft 1982-6-7 689 Lassen Doyle Grade west of Doyle Ca. 1646 Comment
  NY732865  Lupinus arbustus subsp. calcaratus N. H. Holmgren 1978-6-11 8932 Lassen 2.4 km (1.5 mi) east of Rye Patch Canyon summit, 16 km (10 mi) airline distance southeast of Ravendale 1830 Comment
  SEINET10484649  Lupinus arbustus subsp. calcaratus Mary Susan Taylor 1982-7-27 Taylor 5051 Lassen T24n,r17e,sec.7 sw 1/4 sw 1/4. Constantia quad. Crystal peak area, diamond Mountains, ca 6 air miles sw of doyle. With haplopappus bloomeri, ceanothus Velutinus, wyethia mollis 2377 Comment
  UC1609458  Lupinus argenteus Vernon H. Oswald and Lowell Ahart 1993-6-14 5514 Lassen ca 3 mi w Eagle Lake (Eagle Lake Rd. (Lassen A1) 0.5 mi sw Spaulding Tract Rd. (Rd. 518, 33N89)); w of Eagle Lake 1810 Comment
  CAS-BOT-BC208733  Lupinus argenteus var. heteranthus E. K. Balls 1950-5-21 14824 Lassen Standish, 7 mi. from junction of Hwy. 36 and 395. 1249 Comment
  CAS-BOT-BC208740  Lupinus argenteus var. heteranthus Mrs. H. C. Cantelow 1941-5-22 s.n. Lassen 11 miles south of Ravendale, Hwy. 395 Comment
  CAS-BOT-BC208759  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-5-23 47349 Lassen Susanville, 1.4 miles west, Highway 36 Comment
  CAS-BOT-BC208762  Lupinus argenteus var. heteranthus Charles Piper Smith 1947-7-17 47699 Lassen Park Highway, Summit Lake Camp - Lassen Volcanic National Park Comment
  JEPS65006  Lupinus argenteus var. heteranthus Frances D. Payne 1929-7-12 74 Lassen ridge above Lost Lake (northeastesrn Lassen County); Warner Moutnains, ridge above Lost Lake 2286 Comment
  SBBG30558  Lupinus argenteus var. heteranthus D. Myrick 1968-6-19 1960 Lassen Hwy 395, 23 mi S of Alturas 1524 Comment
  UC1137308  Lupinus argenteus var. heteranthus George A. Fischer and Irwin H. Johnson 1933-7-14 F- 265 Lassen Lassen Forest 1767 Comment
  UC1537121  Lupinus argenteus var. heteranthus Gordon H. True Jr. 1936-6-27 556 Lassen near top Hot Spring Mountain; near top of Hot Spring Mountain 1828 Comment
  UC773894  Lupinus argenteus var. heteranthus L. R. Short and Wm. Gansberg 1936-7-3 S- 471 Lassen Burgess Spring Experimental Station; Lassen National Forest, Burgess Spring Experimental Station 1859 Comment
  CAS-BOT-BC208837  Lupinus argenteus var. meionanthus Clare B. Hardham 1969-8-28 s.n. Lassen West of Janesville - Sierra Nevada Comment
  SEINET10969898  Lupinus brevicaulis David B. Dunn 1956-7-3 Dunn 11916 Lassen Coll. On a dry rocky slope with only an occasional juniper, considerable Artemisia tridentata. N side of the alkali flats, 31 mi. Ne of johnstonville On hwy 395. Comment
  HSC14808  Lupinus caudatus M. T. Milligan 1964-8-6 207 Lassen Eagle Lake, near shore at Eagle Lake General Store. 1677 Comment
  HSC82218  Lupinus caudatus Thomas W. Nelson, Jane P. Nelson 1980-7-6 6003 Lassen Along Adin-Madelin Rd., 16 mi. E of Adin in Ash Valley 1555 Comment
  SEINET3145129  Lupinus caudatus E. K. Balls 1950-5-9 15948 Lassen 6 mi S of Doyle 1372 Comment
  RSA616275  Lupinus caudatus David B. Dunn, Jeffrey Huber 1971-6-2 17748 Lassen 3 miles south of Hallelujah Junction, on US Highway 395, junction of US 395 and California 70. Comment
  SEINET10903428  Lupinus caudatus subsp. caudatus Duane Isely, I. Isely 1971-7-11 Isely 11379 Lassen Near apex of ascent s of eagle lake, near state #139. Stems densely clustered; Flowers violet; standard reflexed 45 degrees. 1676 Comment
  SEINET10936587  Lupinus caudatus subsp. caudatus David B. Dunn 1956-7-3 Dunn 11914 Lassen Collected at jct of hwy 395 and 36 near johnstonville. 6 Mi. E of susanville. Open valley with sparse artemesia tridentata, arid grassland well below Woodland. Comment
  RSA87160  Lupinus confertus Mary DeDecker 1955-8-25 262 Lassen Honey Lake: Highway 395. Comment
  UCD170228  Lupinus croceus K. M. Meyer; A. Townesmith 2007-7-23 154 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
  SEINET10488723  Lupinus lepidus Williams 1983-7-31 Williams 126 Lassen Roadside near janesville. Sandy soil with sagebrush and bitterbrush. Great Abundance 1280 Comment
  RSA325238  Lupinus lepidus var. aridus A. Tiehm 1984-6-25 8823 Lassen Rodeo Flat, 2.7 miles west of the state line on Buckhorn road from Ravendale to Hwy 81 1829 Comment
  UC1533129  Lupinus lepidus var. confertus G. Schoolcraft 1986-5-20 1579 Lassen along road to Hanson Ranch ne Horse Lake; ne of Horse Lake 1554 Comment
  UC169643  Lupinus lepidus var. confertus T. S. Brandegee 1892-6-27 Lassen Milford Comment
  UC527349  Lupinus lepidus var. confertus C. B. Wolf 1931-9-6 2404 Lassen on the road to Wendel 1/2 mi from Janesville (western edge of Honey Lake Valley); western edge of Honey Lake Valley 1280 Comment
  SEINET8051629  Lupinus lepidus var. confertus M. J. Williams 1983-7-31 83- 126 -1 Lassen Roadside near Janesville 1280 Comment
  SEINET8051636  Lupinus lepidus var. confertus G. Schoolcraft 1992-8-11 2246 Lassen Along Highway 395 near inters. of Janesville Road 1280 Comment
  UCD18975  Lupinus lepidus var. sellulus Jack N. Reppert 1964-8-5 29 Lassen Lassen National Forest, Harvey Valley Allotment (HV 80-75). 1719 Comment
  CHSC99103  Lupinus microcarpus var. microcarpus Lowell Ahart; John Dittes 2008-6-20 14969 Lassen About 10 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  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
  UC70372  Lupinus microcarpus var. microcarpus Milo S. Baker 1893-1 Lassen Cra<ig?>s 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
  UC725891  Lupinus onustus A. A. Heller 1940-5-22 15662 Lassen above Westwood Cemetary; above the Westwood Cemetary 1524 Comment
  SEINET10488913  Lupinus sellulus Katherine L. Morris 1973-5-25 Morris 220 Lassen Collected at 3.5 mi w of susanville, on u.s. 36, In an area of yellow pine and Purshia. Comment
  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
  SEINET10490263  Lupinus subvexus var. transmontanus David B. Dunn 1956-7-3 Dunn 11925 Lassen Collected on roadside among volcanic rocks. Along hwy 395, 5.5 mi s of likely, Before dropping into valley. Color lavender. Sagebrush common. Comment
  OBI75894  Luzula comosa Anthony Baniaga 2011-8-17 505 Lassen Lassen Natl Forest. Along Silver Lake Rd (32N10) W of 31N08. Red Cinder Quad T31N R8E sec 31 SW of SW 1905 Comment
  CHSC60463  Luzula comosa var. laxa Mary Ann Showers 1992-6-13 2536 Lassen Lassen Volcanic National Park. Meadow along trail from Snag Lake jct to Widow Lake. 1828 Comment
  JEPS97326  Lycopus uniflorus Vernon H. Oswald 1995-8-21 7208 Lassen T38N R15E NE1/4 Sec. 20, 6100 ft, Warner Mtns., Fresh-water Marsh in Yellow Pine Forest. Blue Lake located ca. 13 mi SE of Likely 1859 Comment
  CHSC113060  Lythrum hyssopifolia Lowell Ahart; John Dittes 2013-7-23 18896 Lassen Along the south margin of the levee road, 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
  JEPS127348  Lythrum hyssopifolia Lowell Ahart, John Dittes 2016-7-13 21125 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
  UC905682  Madia citrigracilis David D. Keck 1930-7-23 949 Lassen Susanville Sierra Nevada, Susanville 1280 Comment
  SFV7754  Madia citrigracilis T. Gordon, K. Kimbrough 1975-8-15 1214 Lassen 16 miles south of Adin. 1402 Comment
  UC1567356  Madia citriodora G. Schoolcraft 1989-6-5 1897 Lassen intersection of Highway 139 and A2 s Adin 1341 Comment
  SFV7756  Madia citriodora T. Gordon, K. Kimbrough 1975-8-15 1212 Lassen 16 miles south of Adin. 1402 Comment
  CAS-BOT-BC343697  Madia elegans John Thomas Howell 1974-7-10 50556 Lassen Elysian Valley 1325 Comment
  UC89447  Madia elegans T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CAS-BOT-BC343696  Madia elegans John Thomas Howell 1974-7-8 50458 Lassen Just north of Milford 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
  RSA719892  Madia elegans subsp. elegans Michael A. Vincent, K. Levings 2006-7-29 12912 Lassen Along Rt. 395, ca. 6 miles SE of Johnstonville. Comment
  CHSC66375  Madia exigua Vernon H. Oswald; Lowell Ahart 1996-6-17 7806 Lassen Modoc Plateau. Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. On the N side of the trail between Devils Corral Trailhead and the 6.0 mile post. 1420 Comment
  UC2047849  Madia exigua Debra Valov 2016-6-20 1297 Lassen Bieber; off County Rd. A2 c. 8 km east of Hwy 299; on NW-facing, dry, rocky outcrop. Comment
  CAS-BOT-BC334691  Madia glomerata Alice Eastwood 1912-8-22 1801 Lassen Morgans Springs, Lassen Butte Region Comment
  CHSC106081  Madia gracilis Lowell Ahart; John Dittes 2010-7-31 17006 Lassen Dry meadow on the bottom of a small wash, about 5 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CAS-BOT-BC343061  Madia gracilis Noel H. Holmgren; Patricia K. Holmgren 1980-7-4 9497 Lassen Observation Peak, south base in upper Smoke Creek drainage, 19 km (12 mi) airline distance east-southeast of Ravendale 1680 Comment
  CAS-BOT-BC512879  Maianthemum stellatum Louella Bass 1973-5-25 37 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC347438  Malacothrix floccifera Clare B. Hardham 1969-8-28 17422 Lassen Slope west of Janesville Comment
  POM37232  Malacothrix floccifera Marcus E. Jones 1897-6-21 s.n. Lassen Chat 1616 Comment
  CHSC80607  Malacothrix glabrata V. H. Oswald; B. Corbin, K. Earll, G. Schoolcraft 2001-6-2 10038 Lassen North-northeast of Doyle on a dirt road bordering the east side of Turtle Mountain. 1828 Comment
  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
  CHSC6212  Marsilea vestita J. B. Kimsey 1946-6-24 Lassen Pine Creek, Eagle Lake. 1584 Comment
  HSC25433  Marsilea vestita D. H. Norris, Thomas W. Nelson, S. Dowty 1971-6-22 19177 Lassen Harvey Valley near Cone Springs Comment
  CHSC117546  Marsilea vestita subsp. vestita Lowell Ahart 2016-7-13 21130 B 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
  JEPS127277  Marsilea vestita subsp. vestita Lowell Ahart, John Dittes 2016-7-13 21130 -B Lassen 90 yards east of Stonebreaker Road, 0.6 miles south of County Road A-2, 5.3 miles (air) east of Bieber, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. Comment
  UC62270  Marsilea vestita subsp. vestita J. Burtt Davy Jun 17 1897-Jun 24 1897 3308 Lassen Honey Lake Valley Comment
  CHSC99294  Matricaria discoidea Lowell Ahart; John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber. 1260 Comment
  JEPS114749  Matricaria discoidea Lowell Ahart, John Dittes 2008-6-22 15024 Lassen End of a levee, about 100 yards east of the tall poles, in Big Valley, about 3.5 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber 1260 Comment
  RSA715988  Medicago lupulina L. Ahart, John Dittes 2005-6-2 11966 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
  UC188796  Melica fugax Milo S. Baker 1894-7-12 Lassen Pine Creek Comment
  UCD37478  Melica fugax Beecher Crampton 1960-6-18 5726 Lassen Lassen County, southern Warner Mountains, 1.25 miles north of Blue lake, in vicinity of Blue Lake Ranch. 1981 Comment
  UC593538  Melica stricta E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1771 Lassen Red Rock 1280 Comment
  CHSC112987  Melilotus officinalis Lowell Ahart; John Dittes 2013-7-22 18868 Lassen On the sides of the levee road, about 100 yards south of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC71128  Mentzelia albicaulis Vernon H. Oswald 1998-5-22 9137 Lassen Fort Sage Rd. 2.3 mi north of Hackstaff Rd., ca. 3.5 mi north of Doyle. 1341 Comment
  UC1609094  Mentzelia albicaulis Vernon H. Oswald and Lowell Ahart 1993-7-8 5654 Lassen 1.9 m N Hwy. 44 (on the SE edge of Poison Lake.); Pittville Rd.(Lassen 111,36N01); T32N R7E SE1/4 SE 1/4 Sec. 4 1709 Comment
  CHSC60752  Mentzelia congesta Vernon H. Oswald; Lowell Ahart 1993-6-14 5537 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
  JEPS107445  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
  RSA715551  Mentzelia congesta L. Ahart, John Dittes 2005-6-1 11887 Lassen On the north side of Scott Road, Long Valley, about 4.25 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction. 1434 Comment
  CHSC29933  Mentzelia dispersa Robin L. Ondricek 1978-6-22 67 Lassen In rocky soil among Jeffrey Pines at the n end of Mahogany Lake. 2057 Comment
  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
  RSA32753  Mentzelia dispersa A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. 1524 Comment
  JEPS88213  Mentzelia dispersa Vernon H. Oswald and Lowell Ahart 1996-6-17 7772 Lassen Bizz Johnson Trail accessed at Devils Corral Trailhead located off Hwy. 36 ca. 7 mi W of Susanville 1432 Comment
  SD130462  Mentzelia dispersa John Thomas Howell, Gordon H. True 1973-8-1 50204 Lassen The Sierra Nevada. Headwaters of Baxter Creek, Canadian Zone forest, east slope of Diamond Range south of Susanville. 2164 Comment
  JEPS124811 Image available Mentzelia laevicaulis J. Yamanaka 1965-7-12 120 Lassen Highway 395, 15 miles N. of junction of Calif. 104 US 395. Comment
  RSA17725  Mentzelia laevicaulis Elmer I. Applegate 1921-9-4 3344 Lassen Susanville. Comment
  SEINET5333248  Mentzelia laevicaulis R. H. Miller 1954-8-27 1116 Lassen On U.S. 395, 3 miles north of Doyle. Comment
  POM83245  Mentzelia montana Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1220 Comment
  SEINET194902  Mentzelia pinetorum A. A. Heller 1938-6-22 15184 Lassen Mile east of Westwood. Transition Life Zone. 1524 Comment
  CAS-BOT-BC170841  Mentzelia veatchiana John Thomas Howell; Alice Eastwood 1940-6-11 8002 Lassen Big Valley Comment
  HSC26603  Mentzelia veatchiana D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19284 Lassen Along Hwy. 395 about 4 mi. E of Standish Comment
  CHSC21230  Menyanthes trifoliata Robert A. Schlising 1974-6-20 3146 Lassen Murrers Upper Meadow, about 2.5 miles east of Eagle Lake Field Station, on the east side of Eagle Lake. Comment
  HSC95201  Menyanthes trifoliata Gordon Leppig, Tony LaBanca 1997-6-28 510 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  SD8380  Micranthes bryophora Mrs. R. M. Austin 1882-8-7 Lassen Kings Valley Comment
  CAS-BOT-BC429184  Micranthes oregana John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49424 Lassen Elysian Valley, west of Janesville 1325 Comment
  JEPS87523  Microseris laciniata Vernon H. Oswald and Lowell Ahart 1993-6-28 5588 Lassen Harvey Valley Rd (33N02) 1.7 mi n Hwy 44 (e side of valley, e of Poison Lake); Grays Valley 1719 Comment
  JEPS88326  Microseris laciniata subsp. laciniata Vernon H. Oswald and Lowell Ahart 1996-6-24 7843 Lassen Papoose Meados located ca.0/5 mi E of Eagle Lake Road (A1) and 2.5 mi S of Eagle Lake, Modoc Plateau. 1633 Comment
  CAS-BOT-BC349301  Microseris nutans James Jokerst 1983-7-25 1887 Lassen Near Madeline Plains 1614 Comment
  CHSC106089  Microseris nutans Lowell Ahart; John Dittes 2010-7-31 17000 Lassen Dry meadow, on the north side of the road, about 30 yards north of the large culvert, where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1516 Comment
  CHSC117189  Microseris nutans Lowell Ahart; John Dittes 2016-6-7 21022 Lassen About 10 yards west of State Highway 299, Big Valley Mountains, 0.4 mile (air) northeast of Big Valley Summit, 5.0 miles (air) southwest of Bieber. 1397 Comment
  UC450131  Microseris nutans Franklin P. Nutting Lassen s side Dixie Mt. Comment
  RSA104220  Microsteris gracilis subsp. humilis Verne Grant, Alva Grant 1956-5-18 21757 Lassen Sage brush flat about Lassen County: 8 miles S of Madeline 1280 Comment
  NY963916  Microsteris gracilis var. gracilis W. W. Eggleston 1911-5-29 6762 Lassen Vicinity of Doyle Station 1290 Comment
  UCR201581  Mimulus Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 Comment
  UCR201716  Mimulus Ken Osborne 2005-4-23 s.n. Lassen 6 miles SE of Honey Lake, 1 mile west of Turtle Mountain 1276 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
  CDA41435  Mimulus floribundus L. Ahart, John Dittes 2005-6-2 11970 Lassen Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. Comment
  UC726695  Mimulus floribundus A. A. Heller 1938-6-22 15185 Lassen 1 mi e Westwood 1524 Comment
  CDA41793  Mimulus guttatus Gordon Leppig, T. LaBanca, L. Arguello 1997-6-29 533 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  JEPS80678  Mimulus guttatus L. R. Heckard and T. I. Chuang 1981-6-10 5530 Lassen 13 1/2 mi s Adin (along highway 139) 1463 Comment
  UC26977  Mimulus guttatus J. Burtt Davy Jun 17 1897-Jun 24 1897 3400 Lassen Honey Lake Valley Comment
  UC526139  Mimulus guttatus John Thomas Howell 1934-7-9 12518 Lassen Bridge Creek Spring Comment
  HSC20753  Mimulus guttatus M. T. Milligan 1964-7-16 130 Lassen 2 mi. W on the Silver Lake Rd., along Upper Susan River. 1829 Comment
  JEPS23736  Mimulus inflatulus Rimo Bacigalupi with S. Galen Smith 1957-6-28 5998 Lassen 3.1 mi s Madeline (along U.S. Highway 395); Madeline Plains 1615 Comment
  UC27139  Mimulus layneae M. S. Baker and Frank Nutting Lassen Big Valley Comment
  UC773851  Mimulus microphyllus L. R. Short and J. Warren 1936-6-10 S- 417 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1856 Comment
  UC699729  Mimulus moniliformis Farris Farris 1936-6-10 Lassen Diamond Mountain 1828 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
  JEPS27381  Mimulus nanus var. mephiticus H. W. Grinnell 1934-6-1 Lassen top of divide 8 mi sw Susanville 1950 Comment
  JEPS85744  Mimulus nanus var. mephiticus Roy E. Buck, Robert A. Price 1988-6-26 1032 Lassen ca. 30 air km nne Susanville (on subsidiary peak ca 0.5 air km n of main summit); Fredonyer Peak 2377 Comment
  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
  UC1553406  Mimulus nanus var. nanus Gary Schoolcraft 1988-6-20 1813 Lassen 16 mi w Madeline; Ash Valley 1584 Comment
  RSA536401  Mimulus nanus var. nanus Beth Corbin, Kim Earll, Steve Klukkert 1991-6-18 628 Lassen Grays Valley, ca. 4 mi NW of USFS Bogard Work Center. 1715 Comment
  UCD150408  Mirabilis laevis var. retrorsa William Anderson 1963-6-23 s.n. Lassen Wendel. Comment
  CAS-BOT-BC221782  Monardella odoratissima John Thomas Howell 1934-7-9 12525 Lassen Pine Creek Flat Comment
  CAS-BOT-BC221974  Monardella odoratissima subsp. glauca John Thomas Howell 1934-7-8 12487 Lassen Spalding's, Eagle Lake Comment
  CHSC5272  Monardella odoratissima subsp. glauca J. B. Kimsey 1946-6-11 Lassen Pine Creek, near Eagle Lake. 1580 Comment
  RSA530489  Monardella odoratissima subsp. odoratissima George K. Helmkamp 1990-10-4 R- 22 Lassen Plumas Nat. For., S of Susanville, N of Milford Pass. 1463 Comment
  CAS-BOT-BC213932  Monardella odoratissima subsp. pallida A. M. Vollmer; L. Beane 1953-7-1 47 Lassen Along Halls Flat Road, beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC91315  Monolepis nuttalliana Lowell Ahart; John Dittes 2005-6-1 11897 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction. 1459 Comment
  UC526137  Monolepis pusilla John Thomas Howell 1934-6-10 11895 Lassen Horse Lake Comment
  UCR244049  Monolepis pusilla Jim Andre 1993-6-1 19719 Lassen Sierra Nevada/Great Basin, Honey Lake Valley, north end of Honey Lake, c. 20 mi. E of Susanville, at Wendel 1218 Comment
  CHSC64849  Montia chamissoi Vernon H. Oswald 1995-6-26 6924 Lassen Ash Valley Rd. (Lassen 527), 7.1 mi w of Madeline. Locally bundant in shallow water in a rocky, roadside streamlet. 1712 Comment
  JEPS28404  Montia chamissoi George W. Gillett 1957-7-28 932 Lassen 1 mi above Butte Lake (Lassen Volcanic National Park, Widow Lake Trail); Lassen Volcanic National Park, Widow Lake Trail 1905 Comment
  OBI76977  Montia chamissoi Anthony Baniaga 2011-6-20 385 Lassen Lassen Natl Forest. Windy Gap Well vicinity. Harvey Mtn quad T32N R8e sec 6 NE of SW 1675 Comment
  UC1567410  Montia chamissoi G. Schoolcraft 1989-7-18 1983 Lassen near Buck's Spring (s of Clark's Valley Road) 1874 Comment
  UC1586593  Montia dichotoma Vernon H. Oswald 1991-5-28 4618 Lassen 5 mi ne of Bieber (Wayman Barn at the w end of Hunt Road, Ash Creek Wildlife Area, flat east of barn); Ash Creek Wildlife Area 1264 Comment
  RSA0035909  Montia linearis Lowell A. Ahart, John Dittes 2008-6-20 14938 Lassen About 100 yards west of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  RSA715990  Montia linearis L. Ahart, John Dittes 2005-6-2 11956 Lassen Along poor dirt road, 1 mile E of Anderson Ranch home, Long Valley, 4.5 miles air N of the intersection of Scott Road and Hwy 70, 6 miles NW of Hallelujah jct. 1426 Comment
  UC1609172  Montia linearis Vernon H. Oswald and Lowell Ahart 1993-6-28 5611 Lassen ne of Poiston Lake (on the sse flank of Harvey Mountain, n of Hwy 44 on Rd, 33N06, nne of Burgess Meadow); Harvey Mountain 1798 Comment
  UC773867  Montia linearis L. R. Short, Wm. Gansberg 1936-6-8 S 392 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1743 Comment
  JEPS88525  Montia linearis Vernon H. Oswald and Lowell Ahart 1996-6-24 7875 Lassen Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. Modoc Plateau, Montane Meadow in Yellow Forest. Comment
  UCD86509  Muhlenbergia andina Leo Whitney 1934-7-24 2195 Lassen Bridge Creek camp near Bridge Creek. 7-8 miles southwest of Eagle Lake, Lassen National Forest. 1737 Comment
  CHSC93667  Muhlenbergia asperifolia Lowell Ahart; John Dittes 2005-6-2 11972 Lassen Stream edge, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction. 1408 Comment
  UCD86562  Muhlenbergia asperifolia R. Tofsrud 1947-7-1 227 Lassen Between Johnstonville and Standish. Comment
  UCD86573  Muhlenbergia asperifolia Leo Whitney 1934-7-4 2212 Lassen Lassen National Forest. Eagle Lake. 1584 Comment
  RSA256304  Muhlenbergia jonesii J. R. Reeder, C. G. Reeder 1973-6-5 6237 Lassen 25 miles NW of Susanville along Hwy 44 in Lassen Nat'l Forest 1768 Comment
  CAS-BOT-BC275083  Muhlenbergia richardsonis John Thomas Howell 1934-7-6 12449 Lassen Harvey Valley Comment
  UC1024739  Muhlenbergia richardsonis Leo Whitney 1933-8-3 3042 Lassen ca 8 mi nw Eagle Lake (on open flats); Lassen National Forest, Slate Creek 1920 Comment
  CAS-BOT-BC275156  Muhlenbergia richardsonis George W. Gillett 1957-7-22 871 Lassen Lassen Volcanic National Park. Snag Lake, S shore 1850 Comment
  CHSC57215  Muilla transmontana Mary Meyer 1980-5-20 523 Lassen On mesa 1 mi due east of BLM campground and spring, north of Snowstorm Mountain. 1645 Comment
  UC1483824  Muilla transmontana G. Schoolcraft 1980-6-6 255 Lassen sw Herlong; Bird Canyon 1341 Comment
  JEPS107308  Myosotis discolor Lowell Ahart, John Dittes 2005-6-1 11896 Lassen On the south side of Scott Road, east side of the railroad underpass, Long Valley, about 4 3/4 miles (air) north of the intersection of Scott Road and Highway 70, 6.2 miles (air) northwest of Hallelujah Junction 1459 Comment
  UC1951072  Myosurus apetalus Debra Valov 2009-4-26 2009019 Lassen Bieber; property on south side of County A2 c. 5.4 mi east of Hwy 299 Comment
  SEINET12093181  Myosurus apetalus M. J. Williams, Schoolcraft, G.; Tiehm, A. 1986-1 86- 38 -3 Lassen Tuledad Canyon Rd., from Duck Flat to Ravendale. 0.1 mi W of Calif-Nev line Comment
  CAS-BOT-BC83319  Myosurus minimus Peter H. Raven; Otto Thomas Solbrig 1958-6-17 13285 Lassen Along United States Highway 395, 1.9 miles south of Ravendale. Comment
  CHSC107321  Myosurus minimus Lowell Ahart; John Dittes 2011-6-21 17531 Lassen Bottom of a vernal pool, just west of the fence, about 300 yards southwest of the Parking Area west of the old barn, on the west side of Elkins Lane, Ash Creek State Wildlife Area, about 4.4 miles (air) west of Adin, about 7.2 miles (air) northeast of Bieber, Big Valley. 1268 Comment
  JEPS118444  Myosurus minimus Lowell Ahart, John Dittes 2011-6-21 17526 Lassen Along the bottom of a small drainage, about 30 yards north of the road, between Elkins Lane and Walters Road, about 100 yards south of the old barn, 500 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 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
  RSA0084057  Nama aretioides var. californica Marcus E. Jones 1897-6-18 s.n. Lassen Chat. 1524 Comment
  JEPS79141  Nama aretioides var. multiflora L. R. Heckard with R. Bacigalupi 1980-6-11 5243 Lassen 11.3 mi n Litchfield (along U.S. 395 s of Deep Creek crossing); s of Deep Creek crossing, n of Litchfield 1463 Comment
  CDA40304  Nama aretioides var. multiflora S. E. Piper 1943-7-2 s.n. Lassen 0.5 mile east of Herlong. 0 Comment
  CHSC48463  Nama densa var. densa Vernon Oswald 1986-5-28 2057 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
  CHSC60745  Nama densa var. densa Vernon H. Oswald; Lowell Ahart 1993-6-14 5539 Lassen Eagle Lake Rd. (Lassen A1) at Sandy Beach on the W shore of Eagle Lake, ca. 2.0 mi ENE of Spaulding Tract Rd. (Rd. 518, 33N89). In dry sand between clumps of brush on the N side of the road. 1566 Comment
  SEINET5520826  Nama densa var. densa M. J. Williams 1974-7-26 74 -L-18 Lassen 2 mi west of Hallelujah Junction, south of Hwy 70 1494 Comment
  UC1561920  Nama densa var. densa Barbara Ertter with Gary Schoolcraft 1987-6-16 7198 Lassen saddle on e side of Hot Springs Peak, Skeedaddle Mountains on the ne side of Honey Lake Hot Springs Peak; Skeedaddle Mountains, Honey Lake, Hot Springs 2194 Comment
  UC1483804  Nama densa var. parviflora G. Schoolcraft 1980-7-10 300 Lassen n end Eagle Lake Eagle Lake; n end Eagle Lake 1584 Comment
  UCD87411  Nassella cernua T. S. Brandegee 1892-7-1 s.n. Lassen Susanville. Comment
  CAS-BOT-BC60340  Nasturtium officinale D. L. Stites 1967-6-24 29 Lassen Collected ca. 3.5 miles southeast ELBS Upper Murrer Meadow. 1524 Comment
  CHSC89734  Navarretia breweri L. P. Janeway 2004-6-26 8143 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
  SD3921  Navarretia breweri T. S. Brandegee 1892-7-1 Lassen Susanville Comment
  UC133863  Navarretia breweri Frank Stephens 1894-7-10 Lassen above Pete's Valley 1463 Comment
  UC1537486  Navarretia breweri Gordon H. True Jr. 1936-6-25 541 Lassen e of Harvey Ranger Station; Harvey Valley 1706 Comment
  UC1609452  Navarretia breweri Vernon H. Oswald and Lowell Ahart 1993-6-14 5517 Lassen Eagle Lake rd (Lassen A1) ca 3 mi w Eagle Lake (0.5 mi sw of Spaulding Tract Rd (Rd 518, 33N89)) 1810 Comment
  HSC23507  Navarretia breweri W. Lessig 1967-7-1 11 Lassen 10 mi. N of Susanville on Hwy. 139 1829 Comment
  NY1012730  Navarretia breweri D. W. McNeal 1978-5-30 2126 Lassen Beside Highway #395, 11.2 miles south of Ravendale 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
  JEPS114395  Navarretia intertexta Lowell Ahart, John Dittes 2008-6-22 15028 Lassen about 120 yards west of the road levee, in Big Valley, about 2.1 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 5.0 miles (air) northeast of Bieber 1262 Comment
  HSC82196  Navarretia intertexta subsp. propinqua Thomas W. Nelson, Jane P. Nelson 1980-7-6 6051 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS19816  Navarretia intertexta subsp. propinqua Rimo Bacigalupi with S. Galen Smith 1957-6-28 5991 Lassen 7 mi n Madeline (just e of U.S. Highway 395 (about 1 mi n of Sage Hen siding on S.P. Railroad)) 1676 Comment
  RSA91887  Navarretia intertexta subsp. propinqua Beecher Crampton 1954-7-5 2047 Lassen State Highway 36, 4.5 miles west of Susanville 1433 Comment
  SJSU11520  Navarretia leucocephala subsp. bakeri J. W. Tilden 1958-6-27 1295 Lassen Madeline, Madeline Plains 1615 Comment
  CHSC34344  Navarretia leucocephala subsp. minima K. R. Stern 1974-6-26 5868 Lassen E end of Champs Flat. Comment
  CHSC66253  Navarretia leucocephala subsp. minima Vernon H. Oswald; Lowell Ahart 1996-6-24 7847 Lassen Modoc Plateau. Papoose Meadows located ca. 0.5 mi E of Eagle Lake Rd. (A1) and 2.5 mi S of Eagle Lake. On the W side of the meadow just S of the cabins. 1633 Comment
  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
  UC1137571  Navarretia leucocephala subsp. minima A. Simontacchi 1940-6-7 893 Lassen 6.4 mi sse Beaver Spring; Lassen National Forest, Halls Flat Quad. 1752 Comment
  UC23681  Navarretia leucocephala subsp. minima J. Burtt Davy Jun 17 1897-Jun 24 1897 3362 Lassen Honey Lake Valley Comment
  UC909096  Navarretia leucocephala subsp. minima G. L. Stebbins Jr. 1949-8-6 4003 a Lassen between Susanville and McArthur (edge of Feather Lake); Feather Lake 1676 Comment
  CAS-BOT-BC230388  Navarretia leucocephala subsp. minima Peter H. Raven; Otto T. Solbrig 1958-6-17 13296 Lassen Along US Highway 395, 4.8 miles S of Madeline Comment
  SEINET2440301  Navarretia linearifolia subsp. linearifolia Leigh A. Johnson 2006-7-2 06 -138 Lassen Lassen Nat. Forest, Long Lake vicinity. Off Hwy 44 at mile marker 20.74 (just E of jct between 44 and county road A21). Along shore between trees and water's edge, particularly at point where spur from Hwy 44 connects with road next to lake.; 0 1736 Comment
  UC1137583  Navarretia linearifolia subsp. linearifolia A. Simontacchi 1940-6-4 803 Lassen 7.0 mi sw Jacks Lake; Lassen National Forest, Halls Flat Quadrangle Comment
  UC909114  Navarretia linearifolia subsp. linearifolia G. L. Stebbins Jr. with P. Dansereau, C. McMillan, and K. Narayan 1949-8-7 4009 Lassen 5 mi se Black's Mtn Experimental Range; Grass Valley, Black's Mtn Experimental Range 1676 Comment
  SEINET10496833  Navarretia propinqua Mary Susan Taylor 1974-1 Taylor 277 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  UCSB30253  Nemacladus interior Hardham, Clare 1961-6-16 Lassen Gold Run Creek south of Susanville Comment
  UC604678  Nemophila pedunculata Farris Farris 1935-5-20 Lassen five mi sw Susanville; sw of Susanville 1341 Comment
  CHSC5920  Nicotiana attenuata J. B. Kimsey 1946-6-17 Lassen Eagle Lake. Horse Lake. 1554 Comment
  JEPS97321  Nicotiana attenuata Vernon H. Oswald and L. Ahart 1995-8-14 7182 Lassen T33N R14E NE1/4 Sec. 2, 5400 ft, Modoc Plateau, Sagebrush Scrub. Horse Lake Rd. (Lassen 536) at the railroad crossing 1 mi W of Hwy. 395, N of Susanville 1645 Comment
  UC1191768  Nicotiana attenuata Verne Grant and Irving Schneider 1947-8-1 8235 Lassen e end Tule Lake Comment
  CDA41136  Nicotiana attenuata T. C. Fuller 1959-7-7 4734 Lassen Highway 395, 2.4 miles south of road to Karlo. 0 Comment
  CDA23453  Nitrophila occidentalis Lee Wheeler 1961-8-11 Lassen On the John Capezzoli Ranch in Standish. 0 Comment
  SEINET10729606  Nuphar lutea subsp. polysepala Andrew Townesmith, Karen M. Meyer 2007-7-22 Townesmith 845 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. T31N R7E S26 SW 1/4. 1981 Comment
  JEPS124824 Image available Oenothera deltoides B. Wenegrat 1969-7-8 52 Lassen off H. 395 8 miles S of Milford. Comment
  OBI48977  Oenothera deltoides Lewis S. Rose 1940-6-16 40598 Lassen Buntinville 1280 Comment
  NY998638  Oenothera deltoides var. piperi W. W. Eggleston 1911-9-3 7705 Lassen Vicinity of Doyle Station 1290 Comment
  SEINET5345661  Oenothera deltoides var. piperi M. J. Williams 1968-6-1 s.n. Lassen Near Doyle 1372 Comment
  UC174846  Oenothera elata subsp. hirsutissima T. S. Brandegee 1892-6-29 Lassen Janesville 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
  CHSC71384  Onopordum acanthium Vernon H. Oswald; Beth Corbin, Gary Schoolcraft 1998-7-13 9262 Lassen Near Bieber on Susanville Rd. (A2) 2.5 mi east of Hwy. 299. Roadside and fields. 1280 Comment
  UCR248227  Onopordum acanthium D. B. Joley 1976-6-16 001 Lassen West side of Grasshopper Lake, on Hwy 139, 33 mi north of Susanville. 1626 Comment
  OBI75869  Oreostemma alpigenum var. andersonii Anthony Baniaga 2011-8-9 491 Lassen Lassen Natl Forest. About 1/2 mi W of Griffith Hill, S of 30N21. Swain Mtn quad T30N R8E sec 8 NW of NW 1958 Comment
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Apr 29 2013
  CHSC29921  Orobanche corymbosa Robin L. Ondricek 1978-6-27 76 Lassen At Brockman Flat Lava Beds. 1584 Comment
  CAS-BOT-BC499906  Orobanche fasciculata Clare B. Hardham no date on label; det'd 1980. s.n. Lassen Sierra Nevada: Gold Rush Creek, S of Susanville Comment
  CAS-BOT-BC499907  Orobanche fasciculata R. J. Dobbs 1928-5-23 s.n. Lassen Strawberry Pek switchback 1219 Comment
  CAS-BOT-BC502937  Orobanche uniflora G. Schoolcraft 1999-4-21 2813 Lassen On E. Bald Mtn about 10 mi SE of Susanville 1341 Comment
  CAS-BOT-BC500271  Orobanche uniflora subsp. occidentalis H. C. Cantelow 1941-5-22 s.n. Lassen 13.5 mi W of Susanville, at Fredonyer Pass Comment
  RSA14096  Orthocarpus campestris Elmer I. Applegate 1929-6-24 5884 Lassen North edge of the town of Beiber, Pit River. Comment
  CAS-BOT-BC266614  Orthocarpus cuspidatus Lassen 1927 G. S. Crew 1927-7-15 66 Lassen 1 mile W Bogard Ranger Station 1737 Comment
  POM44324  Orthocarpus cuspidatus subsp. copelandii Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  CHSC13631  Orthocarpus cuspidatus subsp. cryptanthus M. S. Taylor 1974-7-13 307 Lassen Ca. 15 ft w of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi nw of Susanville. 1524 Comment
  JEPS17630  Orthocarpus cuspidatus subsp. cryptanthus Rimo Bacigalupi with G. T. Robbins 1955-7-20 5412 Lassen 4.4 mi s Patterson Ranger Station (near eastern edge of Long Valley Meadow, southern tip of the Warner Mountains); southern tip of Warner Mountains, eastern edge Long Valley M 2057 Comment
  UC172657  Orthocarpus cuspidatus subsp. cryptanthus Frank Stephens July, 1894 Lassen Bunch Grass Spring Comment
  SEINET12329637  Orthocarpus hispidus N. H. Holmgren, Holmgren, P. K. 1980-1 9483 Lassen US 395, 7.4 km S of Ravendale 1620 Comment
  CHSC78408  Oryzopsis exigua Vernon H. Oswald; G. Schoolcraft, M. Dolan, B. Corbin 2000-6-18 9929 Lassen East-northeast of the lookout on Observation Peak located east of Ravendale. 2377 Comment
  HSC69075  Osmorhiza occidentalis Gary Schoolcraft 1980-7-29 342 Lassen Widow Peak Area 1585 Comment
  POM82799  Osmorhiza occidentalis Marcus E. Jones 1897-7-2 s.n. Lassen Susanville Summit 1829 Comment
  UCR92119  Oxytheca dendroidea subsp. dendroidea 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
  NY404463  Oxytheca dendroidea subsp. dendroidea W. W. Eggleston 6296 Lassen Vicinity of Doyle Station 1240 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
  UC1561831  Packera cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7194 Lassen Honey Lake Skeedaddle Mountains, Hot Springs Peak (ne side, saddle on e side of peak) 2194 Comment
  CAS-BOT-BC316859  Packera eurycephala var. eurycephala Michael A. Vincent 1999-6-9 8581 Lassen Along US Rte. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  OBI49191  Packera eurycephala var. eurycephala Lewis S. Rose 1940-6-11 40505 Lassen 8 mi W of Nubieber 1219 Comment
  CHSC5217  Packera multilobata A. Santos 1946-6-17 Lassen Eagle Lake. Mr. Fredonyer Rd. 2072 Comment
  CAS-BOT-BC10429  Paeonia brownii J. T. Howell 1934-6-14 12146 Lassen Near Lost Lake, Warner Mountains 2438 Comment
  CHSC29926  Paeonia brownii Robin L. Ondricek 1978-6-6 80 Lassen Deans Meadow. 1950 Comment
  HSC26234  Paeonia brownii D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19260 Lassen Harvey Valley near Cone Springs Comment
  UC1126132  Paeonia brownii A. Simontacchi 1940-6-8 834 Lassen Halls Flat Ranger Station Lassen National Forest, Halls Flat Quadrangle Comment
  POM115996  Panicum capillare Marcus E. Jones 1897-6-23 s.n. Lassen Amedee. 1220 Comment
  CDA5490  Pastinaca sativa T. C. Fuller 1959-7-7 2793 Lassen North of Cornell Street, west of Foss Street, Susanville. 0 Comment
  SEINET10456341  Pectocarya penicillata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 874 Lassen Collected 3 mi N of Milford on Hwy 395 at Honey Lake campgrounds. Comment
  UC79157  Pectocarya setosa T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  JEPS10720  Pedicularis attollens Brown and Wieslander 1922-7-23 29 Lassen Martin Springs; Eagle Lake Comment
  CAS-BOT-BC7094  Pedicularis attollens subsp. protogyna Francis Whittier Pennell 1940-6-10 25771 Lassen Route 36 road to Coppervale R.S., E of Westwood Comment
  CHSC5004  Pedicularis semibarbata K. C. Newman 1967-7-14 80 Lassen Collected near Silver Lake, along the road just past the picnic area in dry soil. 1828 Comment
  RSA516352  Penstemon deustus subsp. sudans Barbara Ertter 1987-6-16 7178 Lassen Skeedaddle Mtns on NE side of Honey Lake, below ridge 1 mile W of Hot Springs 1829 Comment
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Mar 25 2010
  JEPS107844  Penstemon deustus var. pedicellatus Lowell Ahart, John Dittes 2005-6-2 11979 Lassen North side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 5.7 miles (air) northwest of Hallelujah Junction 1410 Comment
  CHSC68880  Penstemon gracilentus Vernon Oswald; Lowell Ahart 1997-6-24 8589 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
  NY600695  Penstemon gracilentus G. H. True Jr. 1938-7-14 959 Lassen Summit on Milford Grade, just on north slope 1676.4 Comment
  NY600719  Penstemon gracilentus A. M. Alexander 1946-8-13 5157 Lassen West side of Eagle Lake Comment
  UC1583940  Penstemon gracilentus G. Schoolcraft 1990-7-9 2109 Lassen e slope of Tule Mtn. 1767 Comment
  UC506922  Penstemon gracilentus George A. Fischer, Irwin H. Johnson 1933-7-14 F 254 Lassen Lassen Forest 1783 Comment
  SEINET5329197 Image available Penstemon heterophyllus C. G. Gulling 1905-1 s.n. Lassen Big Meadows Comment
  SEINET10548051  Penstemon miser Mary Susan Taylor 1974-1 Taylor 276 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  NY627271  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood 1493.5 Comment
  POM195120  Penstemon neotericus D. D. Keck 1930-7-23 957 Lassen 2 miles east of Westwood. 1494 Comment
  SEINET5329199 Image available Penstemon neotericus J. T. Howell 1973-7-10 49758 Lassen near Westwood 1554 Comment
  RSA257090  Penstemon newberryi Christopher Davidson 1974-7-23 2497 Lassen Lassen Volcanic Nat'l Park. Rd to Juniper Lake. 2134 Comment
  POM172676  Penstemon newberryi subsp. newberryi Franklin Nutting 1894-7-30 s.n. Lassen Silver Lake. Comment
  NY640119  Penstemon procerus var. procerus N. H. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 miles) east of Ravendale and 22.5 km (14 miles) airline distance 1680 Comment
  CHSC4877  Penstemon roezlii R. Carter 1967-6-23 542 Lassen Growing ca. 5 yds off N side rd. Comment
  JEPS29104  Penstemon roezlii Lauramay T. Dempster 1961-6-17 1680 Lassen just w Tule Mountain; just w of Tule Mountain 1645 Comment
  POM252932  Penstemon roezlii A. A. Heller 1938-6-23 15195 Lassen East of Fredonyer Pass. 1646 Comment
  UCD124154  Penstemon roezlii Mrs. H. C. Cantelow 1941-5-24 s.n. Lassen Balls Canyon, south of Secret Valley. Comment
  SEINET5323614 Image available Penstemon rydbergii N. H. Holmgren, P. K. Holmgren 1978-6-11 8914 Lassen Vicinity of spring at fork to Painters Flat on east side of Observation Peak, 28 km (17.4 mi) east of Ravendale and 22.5 km (14 mi) airline distance. 1676 Comment
  CAS-BOT-BC239493  Penstemon rydbergii var. oreocharis A. M. Vollmer; L. Beane 1953-7-1 78 Lassen Along Halls Flat road beginning 6 miles west of Susanville to McArthur 1554 Comment
  CHSC4754  Penstemon rydbergii var. oreocharis R. Carter 1967-7-14 612 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir. Comment
  CHSC4791  Penstemon rydbergii var. oreocharis R. Carter 1967-7-7 582 Lassen Collected at W end of reservoir. Deans Meadow, 6.3 mi S of Eagle Lake Biology Station. 1828 Comment
  CHSC93700  Penstemon rydbergii var. oreocharis Lowell Ahart; John Dittes 2005-6-2 11988 Lassen Along a small wash, east side of a poor dirt road, Long Valley, about 4 1/2 miles (air) northeast of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction. 1427 Comment
  HSC63732  Penstemon rydbergii var. oreocharis Teresa Prendusi 1980-7-1 Lassen Champs Flat, 6 mi. W of N end of Eagle Lake 1707 Comment
  NY651292  Penstemon rydbergii var. oreocharis A. A. Heller 1938-6-22 15182 Lassen 1 mile south of Westwood 1524.0 Comment
  RSA59553  Penstemon rydbergii var. oreocharis E. K. Balls 1950-5-22 14830 Lassen 0.5 mi N of turnoff to Heir, Hwy 395, between Milford and Doyle. 1280 Comment
  UC1012182  Penstemon rydbergii var. oreocharis Francis W. Pennell 1940-6-10 25774 Lassen Route 36 road to Coppervale R.S., e Westwood; e of Westwood 1493 Comment
  UC1142926  Penstemon rydbergii var. oreocharis A. L. Hormay 1941-6-25 22 Lassen Burgess Spring Lassen National Forest, Burgess Spring 1676 Comment
  CHSC25148  Penstemon speciosus L. E. Ray 1967-6-24 52 Lassen Collected ca. 8 miles s ELBS, Deans Meadow. 1950 Comment
  CHSC30557  Penstemon speciosus Sori H. Shad 1970-6-25 14 Lassen Found in Dean's Meadow, 6 miles south of E. L. B. S. 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
  NY660809  Penstemon speciosus N. H. Holmgren 1980-7-5 9518 Lassen Upper Smoke Creek drainage, 14.8 km (9.2 miles) east of U.S. Highway 395 via Rye Patch Canyon, 19 km (12 miles) airline distance east-southeast of Ravendale. 1680 Comment
  POM44291  Penstemon speciosus Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  UC1036208  Penstemon speciosus George W. Gillett July 1953 273 Lassen Fredonyer Pass Lassen National Forest, Fredonyer Pass (Highway 36) 1752 Comment
  UC1142999  Penstemon speciosus August L. Hormay 1934-6-30 Lassen Harvey Valley Lassen National Forest 1615 Comment
  CAS-BOT-BC239663  Penstemon sudans Francis W. Pennell 1940-7-23 26253 Lassen Route 36, west of Susanville 1371 Comment
  CHSC23482  Penstemon sudans Wayne O. Baum 1971-7-9 71 -86 Lassen E slope of Gallatin Peak. 2072 Comment
  NY661796  Penstemon sudans A. A. Heller 1938-6-23 15194 Lassen East of Fredonyer Pass 1615.4 Comment
  NY661803  Penstemon sudans N. H. Holmgren 1978-6-12 8937 Lassen Rye Patch Canyon, 4.3 km (2.7 miles) east of U.S. Highway 395, just above Ramhorn Campground, 14.5 km (9 miles) airline distance southeast of Ravendale. 1740 Comment
  NY661805  Penstemon sudans J. T. Howell 1973-8-1 50153 Lassen Gold Run Creek road south of Susanville, Diamond Range Comment
  UC886952  Penstemon sudans A. A. Heller 1938-6-22 15194 Lassen on Highway #36 on a stony slope e Fredonyer Pass; e of Fredonyer Pass 1645 Comment
  SEINET5323638 Image available Penstemon sudans G. Schoolcraft 1998-7-8 2752 Lassen Along Hwy 139 about 3 mi. n. os Susanville. 1402 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
  OBI82794  Penstemon venustus Robert L. Johnson, Mikel R. Stevens 2015-7-10 3935 Lassen E of Freydonyer Pass. 6.2 rd mi west on Hwy 36 after jct with Hwy 44. S side of rd. Ca 11 air mi wsw of Susanville.; 0 1659 Comment
  CDA26041  Peraphyllum ramosissimum T. C. Fuller, R. C. Bechtel, R. Bradley 1981-7-9 20382 Lassen On slope above the west side of Smoke Creek Reservoir. 0 Comment
  RSA594173  Peraphyllum ramosissimum S. O. Mattoon 1974-6-2 42 Lassen Cottonwood Mountains: Vicinity of Dodge Res.; Lassen County Road 502. 1829 Comment
  JEPS107969  Perideridia bolanderi Lowell Ahart, John Dittes 2005-6-1 11916 Lassen Along a small wash, on the east side of a poor road, Long Valley, about 4 1/2 miles (air) north of the intersection of Scott Road and Highway 70, 6.0 miles (air) northwest of Hallelujah Junction 1425 Comment
  CHSC85820  Perideridia bolanderi subsp. bolanderi David French 1968-6-2 2881 Lassen Near State Hwy. 36, 13.8 mi E of Westwood, 5.1 mi E of Fredonyer Pass; roughly 8 mi W of Susanville. Comment
  UC1004694  Perideridia bolanderi subsp. bolanderi R. C. Bechtel 1954-7-12 Lassen Bridge Creek Camp Comment
  SEINET10545979  Perideridia bolanderi subsp. bolanderi Paul Gallian, David B. Dunn 1971-6-2 Gallian 506 Lassen 6 mi. N of Hallelujah Jct. on U.S. Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery pine along highridge and in sandy wash. 1402 Comment
  SEINET10545980  Perideridia bolanderi subsp. bolanderi Paul Gallian, David B. Dunn 1971-6-2 Gallian 464 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
  UC20876  Perideridia oregana Milo S. Baker 1893-7-3 Lassen Big Valley Comment
  JEPS12408  Perideridia parishii subsp. latifolia Brown and Wieslander 1922-7-30 15 Lassen Martin Sprs. Eagle Lake Comment
  CAS-BOT-BC423340  Peritoma platycarpa Peter H. Raven 1962-5-28 17874 Lassen 7.7 miles north of Litchfield. Comment
  CAS-BOT-BC423344  Peritoma platycarpa Elmer I. Applegate 1934-5-3 8923 Lassen South of Secret Valley Comment
  CAS-BOT-BC413480  Persicaria amphibia L. S. Smith 1918-7-22 1006 Lassen Modoc National Forest. Blue Lake 1874 Comment
  CAS-BOT-BC413522  Persicaria amphibia George W. Gillett 1957-7-26 921 Lassen Lassen Volcanic National Park. Butte Lake 1844 Comment
  CHSC58505  Persicaria amphibia Vernon H. Oswald; Lowell Ahart 1992-7-9 5079 Lassen Lassen Volcanic National Park. S side of Horseshoe Lake. 1994 Comment
  CHSC7682  Phacelia adenophora Beverley J. Wise 1969-5-3 49 Lassen 6.1 mi. junction with Hwy 395 on Las. Co. Rd. 338. 1615 Comment
  JEPS95723  Phacelia adenophora Vernon H. Oswald and L. Ahart 1995-6-19 6884 Lassen T30N R15E NE1/4 SE1/4 Sect. 22, 4500 ft, Modoc Plateau, Sagebrush Scrub. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.7 mi e of Hwy. 395 1371 Comment
  UC1483800  Phacelia adenophora G. Schoolcraft 1980-5-30 248 Lassen along Hwy 395 n Mud Flat; Secret Valley Area 1359 Comment
  UC735114  Phacelia adenophora Lincoln Constance 1946-7-3 3100 Lassen 16 mi w Termo; Grasshopper Valley 1676 Comment
  POM230485  Phacelia adenophora D. D. Keck, Jens Clausen 1935-6-24 3736 Lassen 2 miles south of Ravendale. 1463 Comment
  SEINET5536525  Phacelia adenophora G. Schoolcraft 1980-6-5 252 Lassen Northeast side of Snowstorm Mtn. 1585 Comment
  NY1052542  Phacelia bicolor W. W. Eggleston 1911-5-29 6742 Lassen Vicinity of Doyle Station 1290 Comment
  JEPS94828  Phacelia bicolor var. bicolor Vernon H. Oswald and Lowell Ahart 1998-5-22 9132 Lassen 6 mi ne of Doyle (3.5 mi e of Fort Sage Road, near the summit of the dirt road in the Fort Sage Mountains); Fort Sage Mountains 1737 Comment
  UC107370  Phacelia bicolor var. bicolor T. S. Brandegee 1892-6-22 Lassen Honey Lake Comment
  RSA638996  Phacelia heterophylla subsp. virgata Michael A. Vincent 1999-6-9 8585 Lassen Along US Rt. 395, south of Ravendale Fire Station, 1.8 miles north of rest area, and 24.8 miles north of Litchfield. 1524 Comment
  JEPS2119  Phacelia humilis Brown and Wieslander 1922-7-18 63 Lassen Martin Sprs. Eagle Lake Comment
  NY1057845  Phacelia humilis B. J. Ertter 1987-6-16 7196 Lassen Skeedaddle Mountains on northeast side of Honey Lake; saddle on east side of Hot Springs Peak 2195 Comment
  UC773945  Phacelia humilis L. R. Short 1936-5-22 S- 351 Lassen Burgess Spring Experiment Range Lassen <National> Forest 1836 Comment
  CHSC5263  Phacelia imbricata 1944-7-6 Lassen Eagle Lake. Harvey Valley. 1694 Comment
  CHSC5265  Phacelia linearis J. Wolf 1946-6-20 Lassen Eagle Lake. Grasshopper Valley. 1624 Comment
  CHSC80208  Phacelia linearis Jeanne Boze 1981-6-13 117 Lassen On northeast slope of Gallatin Peak. 1981 Comment
  CHSC92755  Phacelia linearis L. P. Janeway 2005-7-4 8463 Lassen High Cascade Range. Ridge top north above Long Valley; 0.4 km west of Road 34N41. 1752 Comment
  JEPS29742  Phacelia linearis Rimo Bacigalupi and L. R. Heckard 1962-5-28 8497 Lassen 2.7 mi n of Milford (along U.S. Hwy 395); U.S. Hwy 395 1219 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
  UC133088  Phacelia linearis T. S. Brandegee 1892-6-26 Lassen Milford Comment
  CDA40405  Phacelia linearis T. C. Fuller 1963-6-1 10637 Lassen Road to Willow Springs Campground, 2.0 miles east of Pittville-Susanville Road, 11.3 miles (road) south of Pittville. 0 Comment
  RSA149122  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-16 16530 Lassen 0.8 mile west of summit of Big Valley Pass. Comment
  RSA152684  Phacelia linearis I. L. Wiggins, Dorothy Wiggins 1961-6-11 16357 Lassen On hillside near northeast end of Eagle Lake. Comment
  NY1056456  Phacelia lutea var. glandulifera L. Constance 1938-6-11 2329 Lassen Throughout the Madeline Plains from Litchfield to Madeline 1219 Comment
  NY1056436  Phacelia lutea var. glandulifera P. A. Munz 1947-5-19 11879 Lassen Highway 395 4 miles south of Madeline Comment
  SEINET5518985  Phacelia lutea var. lutea M. J. Williams, G. Schoolcraft, A. Tiehm 1986-5-12 86- 21 -1 Lassen Smoke Creek Road, east of HWY 395 1448 Comment
  CHSC111256  Phacelia mutabilis L. P. Janeway; B. Castro 2012-7-3 10939 Lassen Modoc Plateau. Near top of Shaffer Mountain, southeast-facing slope, steep and very rocky with lots of outcrops of hard dark volcanic rock. 2012 Comment
  RSA129733  Phacelia mutabilis G. A. Fischer, Irwin H. Johnson 1933-7-12 F- 226 Lassen Lassen National Forest. 1723 Comment
  CAS-BOT-BC141447  Phacelia ramosissima var. eremophila H. D. Ripley; R. C. Barneby 1943-6-13 5691 Lassen Milford 1264 Comment
  CHSC59552  Phacelia ramosissima var. ramosissima M> Meyer 1980-7-8 514 Lassen Amongst rocks (lg.) and junipers on top of Grasshopper Ridge. 1724 Comment
  JEPS25530  Phacelia thermalis Rimo Bacigalupi with Lincoln Constance 1959-6-16 7144 Lassen Hwy 395 1/4 mi s junction of road to Smoke Creek (playa beside hwy) 1341 Comment
  CAS-BOT-BC253549  Phleum alpinum G. Schoolcraft 1997-8-6 2668 Lassen Diamond Mtn. 2316 Comment
  UC1776695  Phleum pratense G. Schoolcraft 1994-8-2 2407 Lassen About 1.5 miles SW of Boot Lake 2011 Comment
  CHSC61165  Phlox diffusa Vernon H. Oswald; Lowell Ahart 1993-5-12 5372 Lassen SW side of Hwy. 44, 0.9 mi NW of its intersection with A21 (to Westwood). 1737 Comment
  CHSC68898  Phlox diffusa Vernon Oswald; Lowell Ahart 1997-6-24 8638 Lassen South of Susanville near the small pond on the crest of Diamond Mtn., about midway between Aspen flat and Red Rock Lookout. 2249 Comment
  SEINET11263184  Phlox diffusa Barbara Ertter 1990-5-13 8964 Lassen McCoy Road N of Westwood, 3 miles from junction with A21, ca 6 airmiles N of Westwood.; 0 1676 Comment
  RSA122928  Phlox diffusa subsp. diffusa L. R. Short 1936-4-28 S- 332 Lassen Lassen National Forest, Burgess Spring Experimental Range 1738 Comment
  UC1137767  Phlox douglasii subsp. rigida August L. Hormay 1934-7-10 Lassen Halls Flat Lassen National Forest 1706 Comment
  UC1137763  Phlox gracilis August L. Hormay 1934-5-9 Lassen Black Mt. Headquarters Lassen National Forest 1706 Comment
  UC1609184  Phlox gracilis Vernon H. Oswald and Lowell Ahart 1993-5-12 5376 Lassen 3.5 mi nw A21 (to Westwood) (canal crossing Hwy 44, on the n side of the road and on the e side of the canal) 1729 Comment
  RSA647574  Phlox longifolia Marion P. Harthill 1971-6-21 227 Lassen Ravendale Comment
  CHSC6210  Phlox speciosa subsp. occidentalis R. Gein 1946-6-17 Lassen Summit of Mt. Fredonyer. 2421 Comment
  CHSC71130  Phlox stansburyi Vernon H. Oswald; Lowell Ahart 1998-5-22 9114 Lassen Road to ORV parking area in Fort Sage Mtns. 0.6 mi east of Fort Sage Rd., ca 5 mi NNE of Doyle. 1402 Comment
  UCD118472  Phlox stansburyi var. brevifolia Grady L. Webster 1989-5-13 7716 Lassen 2.5 mi E of Beckworth Pass. Comment
  CHSC48338  Phoenicaulis cheiranthoides Vernon Oswald 1986-5-28 2061 Lassen Hwy 139 between Eagle Lake and Adin, 38.1 mi n of Susanville. 1645 Comment
  CHSC61141  Phoenicaulis cheiranthoides Vernon H. Oswald; Lowell Ahart 1993-5-12 5386 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
  CHSC68743  Phoenicaulis cheiranthoides Vernon H. Oswald; Lowell Ahart 1997-5-27 8490 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. At a pullout along the highway. 1627 Comment
  UC585228  Phoenicaulis cheiranthoides E. B. Babcock, G. L. Stebbins Jr. 1936-6-7 1758 Lassen nw side of summit e of Red Rock 1828 Comment
  CDA19731  Phyllodoce breweri J. Chattin August 1947 s.n. Lassen Northern California; Silver Lake. 0 Comment
  UCD133167  Pinus contorta subsp. murrayana Beecher Crampton 1960-6-21 5743 Lassen Gurnsey Creek. 3.5 miles E of Child's Meadow, along State Hwy. 36. 1463 Comment
  HSC26251  Pinus jeffreyi W. A. Heaton 1965-5-8 32 Lassen Near Fredonyer Pass on Hwy. 36 W of Susanville, Bulk Collection 45 Comment
  SEINET10530757  Pinus jeffreyi Jeffrey Huber 1971-6-2 Huber 141 Lassen 6 mi N of Halleluja Jct on US Hwy 395, in Artemesia tridentata, Pinyon pine, Jeffrey pine along high ridge and in sandy wash. 1402 Comment
  CHSC12502  Pinus lambertiana Carol Weld 1969-6-20 13 Lassen Road between Five Corners and Dean's Meadow. 1889 Comment
  UCR201593  Plagiobothrys Ken Osborne 2005-4-23 s.n. Lassen 3 miles SE of Honey Lake, 0.5 mile west of Turtle Mountain 1276 Comment
  CHSC29914  Plagiobothrys cognatus Robin L. Ondricek 1978-7-5 85 Lassen Grassy area bordering ne edge of Mahogany Lake. 2057 Comment
  CHSC60332  Plagiobothrys cognatus Mary Ann Showers 1992-6-13 2547 Lassen Lassen Volcanic National Park. Shoreline at western end of Widow Lake. 2072 Comment
  JEPS28801  Plagiobothrys cognatus George W. Gillett 1957-9-4 1127 Lassen Widow Lake Lassen Volcanic National Park (e margin of lower lake, near inlet) 2072 Comment
  CDA42913  Plagiobothrys cusickii L. Ahart, John Dittes 2012-7-9 18284 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC117271  Plagiobothrys cusickii Lowell Ahart; John Dittes 2016-7-15 21212 Lassen About 300 yards west of the 4 tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1261 Comment
  JEPS119643  Plagiobothrys cusickii Lowell Ahart, John Dittes 2012-7-9 18284 -A Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS124383  Plagiobothrys cusickii Lowell Ahart, John Dittes 2015-7-13 20305 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS127173  Plagiobothrys cusickii Lowell Ahart, John Dittes 2016-7-15 21212 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  JEPS28658  Plagiobothrys hispidulus George W. Gillett 1957-7-21 860 Lassen 300 yd n trail summit (Juniper Lake-Cameron Meadow trail); Lassen Volcanic National Park 2118 Comment
  UC1137645  Plagiobothrys hispidulus A. Simontacchi 1940-5-21 757 Lassen 4.1 mi sse Blacks Mountain; Halls Flat Quad., Lassen National Forest Comment
  CHSC110772  Plagiobothrys hispidus Dean Wm. Taylor 2012-7-18 21274 Lassen Pumice flat nestled in the cones about 2 miles South of the south end Poison Lake (along Highway 44). 1783 Comment
  UC1609214  Plagiobothrys hispidus Vernon H. Oswald and Lowell Ahart 1993-7-8 5655 Lassen se edge Poison Lake (Pittville Road (Lassen 111, 36N01) 1.9 mi n of Highway 44, stony ridge between the R.R. and the lake); se edge Poison Lake 1709 Comment
  UC1618198  Plagiobothrys hispidus Barbara Ertter 1987-7-25 7318 Lassen Hwy. 44 ca. 1 mi. e. Shasta Co. line (s. of hwy.) 1645 Comment
  JEPS107444  Plagiobothrys kingii var. harknessii Lowell Ahart, John Dittes 2005-6-1 11891 Lassen On the north side of Scott Road, Long Valley, about 4 1/4 miles (air) north of the intersection of Scott Road and Highway 70, 5.5 miles (air) northwest of Hallelujah Junction 1433 Comment
  SBBG6336  Plagiobothrys mollis H. and M. Dearing 1939-6-6 3567 Lassen marsh on Pitt River, Bieber Comment
  UC1560401  Plagiobothrys mollis E. Joyal and D. Mehlman 1988-6-27 1286 Lassen Poison Lake 2000 Comment
  POM71640  Plagiobothrys scouleri var. hispidulus Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  POM73080  Plagiobothrys torreyi Marcus E. Jones 1897-6-19 s.n. Lassen Chat 1524 Comment
  CAS-BOT-BC136632  Platanthera A. M. Vollmer; L. Beane 1953-7-1 74 Lassen Field redacted by CAS, contact the data manager for more information 1554 Comment
  HSC95289  Platanthera dilatata var. leucostachys Gordon Leppig, J. Cromwell 1997-7-26 602 Lassen Modoc National Forest, Blue Lake Ranch 1970 Comment
  HSC16618  Platanthera dilatata var. leucostachys Jim Vaughn 1956-7-13 Lassen Drakesbad, Mt. Lassen Natl. Park 1738 Comment
  UC890150  Plectritis brachystemon C. L. Hitchcock 6604 Lassen 12 mi n of Fall River Mills (on Fall River); Fall River 1371 Comment
  CHSC4942  Plectritis macrocera W. Lessig 1967-5-23 16 Lassen Coll. ca. 200 yds. ne of Eagle Lake Biology Station. 1524 Comment
  RSA337278  Plectritis macrocera Noel Holmgren, Patricia K. Holmgren 1980-7-3 9488 Lassen Rye Patch Canyon Road, 3.4 km (2.1 mi) east of US Hwy 395, 14.5 km (9 mi) airline distance southeast of Ravendale. 1700 Comment
  UC1924225  Plectritis macrocera Debra Valov 2004-6-8 2004249 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1274 Comment
  HSC63959  Plectritis macrocera Teresa Prendusi 1980-5-19 Lassen Saddle Rock. 1524 Comment
  CHSC7736  Pleiacanthus spinosus Beverley J. Wise 1969-5-23 79 Lassen 33.5 mi. S.E. of Susanville on Las. Co. Rd. 320. 1249 Comment
  RSA273386  Poa J. P. Smith, J. O. Sawyer 1971-5-22 4655 Lassen 4 miles west of Susanville on State Route 44. Comment
Read comments
May 9 2012
  UC1031352  Poa Leo Whitney 1935-6-26 3367 Lassen Camp 10 Fruit Grower's Supply Company; Lassen Nat'l Forest Comment
  CHSC36503  Poa bulbosa Theresa Costa 1982-6-2 22 Lassen Ca. 3.5 mi e jct Hwy I39 and Ravendale Rd, ca 5 yd n Ravendale Rd. Creekside. Comment
  UC1924563  Poa bulbosa Debra Valov 2006-5-30 2006035 Lassen Bieber off County Rd A2 c. 8.7 km east of Hwy 299 1285 Comment
  UCD57075  Poa bulbosa Beecher Crampton 1964-6-26 7078 Lassen Ca. 30 miles NW of Susanville. Harvey Valley. 1694 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
  CHSC112468  Poa bulbosa subsp. vivipara Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18748 Lassen About 30 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  RSA719872  Poa compressa M. A. Vincent, K. Levings 2006-7-29 12903 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  UCD90920  Poa cusickii Leo Whitney 1935-6-19 3265 Lassen Camp 10, Fruit Grower's Supply Company, Lassen National Forest. Comment
  CAS-BOT-BC247319  Poa pratensis Louella Bass 1973-5-29 EU 67 Lassen Elysian Valley 1325 Comment
  CAS-BOT-BC247323  Poa pratensis Louella Bass 1973-5-25 EU 45 Lassen Elysian Valley 1325 Comment
  UC1024691  Poa pratensis subsp. pratensis Leo Whitney 1933-8-2 2154 Lassen ca 8 mi nw Eagle Lake (Slate Creek); Lassen Nat'l Forest 1920 Comment
  SD34480  Poa secunda A. A. Beetle 1941-6-28 2797 Lassen 10 miles west of Chester, mountain meadow 1524 Comment
  UCR266833  Poa secunda G. B. Stabler 1922-7-9 s.n. Lassen Constantia [former settlement, in Long Valley 45 miles (72 km) southeast of Susanville] 1372 Comment
  CAS-BOT-BC237715  Poa secunda subsp. juncifolia J. B. Davy 1897-6-1 3319 Lassen Honey Lake Valley Comment
  CAS-BOT-BC251087  Poa secunda subsp. juncifolia John Thomas Howell; Gordon H. True; Margaret Williams 1973-6-28 49460 Lassen Elysian Valley, west of Janesville 1325 Comment
  UC1024869  Poa secunda subsp. juncifolia Leo Whitney 1935-5-26 3157 Lassen 10 mi e Adin (Ash Creek) Comment
  UC1776716  Poa secunda subsp. juncifolia G. Schoolcraft 1994-7-6 2348 Lassen About 1.5 miles NE of Red Rock Lake 2042 Comment
  UCD32661  Poa secunda subsp. juncifolia Beecher Crampton 1954-7-5 2057 Lassen 4.5 miles W of Susanville, along Hwy 36. 1432 Comment
  SEINET7855100  Poa secunda subsp. juncifolia P. B. Kennedy 1901-6-10 s.n. Lassen R.R. station, Constantia Comment
  CAS-BOT-BC236178  Poa secunda subsp. secunda Doris Kildale Gillespie 1930-5-13 9362 Lassen Between Susanville and Janesville Comment
  CAS-BOT-BC236180  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49197 Lassen Elysian Valley NW of Janesville 1325 Comment
  CAS-BOT-BC236184  Poa secunda subsp. secunda John Thomas Howell 1976-7-20 52008 Lassen About 5 miles W of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CHSC33317  Poa secunda subsp. secunda Hank Thompson 1980-4-14 19 Lassen Ca. 20 mi E of Susanville. 1310 Comment
  JEPS107471  Poa secunda subsp. secunda Lowell Ahart, John Dittes 2005-6-1 11845 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
  UC1142953  Poa secunda subsp. secunda A. L. Hormay 1941-6-26 37 Lassen Bogard Ranger Station, Pine Creek Bogard Ranger Station; Lassen Nat'l Forest 1706 Comment
  UC70958  Poa secunda subsp. secunda M. S. Baker and Frank Nutting 1894-7-3 Lassen Dixie Valley Comment
  UC1136985  Poa wheeleri L. R. Short 1936-4-28 S- 340 Lassen Burgess Spring Experimental Range; Lassen Forest 1767 Comment
  UC1143003  Poa wheeleri August L. Hormay 1934-5-14 Lassen between Dixie Ranger Station and Patterson Flat; Lassen Nat'l Forest 1767 Comment
  UCD91756  Poa wheeleri L. Whitney 1935-6-23 s.n. Lassen Fruit Grower's Supply Co., Camp 10. Comment
  UCD80867  Pogogyne floribunda Robert E. Preston 2007-7-8 2570 Lassen Big Valley Mtns, 0.4 mi NE of Big Valley Summit, along Hwy 299. 1396 Comment
  SEINET8729406 Image available Polemonium micranthum Unknown 1986-1 10378 Lassen 1.5 road miles southwest of Dodge Reservoir on the main road to Ravendale, near a windmill, T36N, R16E, S35, 5600 ft. 1707 Comment
  CHSC96705  Polemonium occidentale Gordon Leppig 1998-7-12 949 Lassen Modoc National Forest, Blue Lake Ranch. Peatland in large meadow complex. 1970 Comment
  SD61072  Polemonium occidentale Darley F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mountains, Modoc Natl. Forest 2012 Comment
  SDSU3228  Polemonium occidentale D. F. Howe 1964-8-2 3918 Lassen East Creek, Warner Mtns., Modoc National Forest 2012 Comment
  CAS-BOT-BC74168  Polyctenium fremontii James Jokerst 1983-5-31 1786 Lassen Grasshopper Valley. 1583 Comment
  NY661121  Polyctenium williamsiae B. Corbin 2002-6-4 1078 Lassen Mud Flat-south end, East side of Highway 395. 1347.2 Comment
  SEINET5326413  Polyctenium williamsiae A. Tiehm, J. Nachlinger, M. J. Williams 1988-1 11703 Lassen On highway 395 from Susanville to Alturas, 6.6 road miles N of the Wendel Road. 1347 Comment
  RSA0004886  Polygala lasseniana A. A. Heller 1938-6-23 15213 Lassen South of Secret Valley. Comment
  HSC63730  Polygala subspinosa Teresa Prendusi 1980-5-19 Lassen Slope above Secret Creek Canyon 1433 Comment
  JEPS127590  Polygala subspinosa L. P. Janeway, B. Castro 2015-6-5 11765 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 o Mahogany Mountain. Little Hat Mountain 7.5' Quad. Comment
  NY1002472  Polygala subspinosa H. D. D. Ripley 1943-6-15 5760 Lassen East of Viewland 1311 Comment
  NY652201  Polygonum amphibium var. stipulaceum G. Schoolcraft 1996-9-12 2571 Lassen In Willow Creek north of Susanville 1493.5 Comment
  CDA2771  Polygonum arenastrum T. C. Fuller 1959-7-7 4731 Lassen Lee Wheeler property, 3 miles south of Susanville. 0 Comment
  CAS-BOT-BC419766  Polygonum argyrocoleon Ernest C. Twisselmann 1961-9-21 6570 Lassen Harvey Valley Road, ca. 14 miles south of Pittville 1219 Comment
  CAS-BOT-BC419767  Polygonum argyrocoleon John Thomas Howell 1976-7-20 52030 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  CAS-BOT-BC413932  Polygonum aviculare subsp. aviculare John Thomas Howell 1973-7-10 49796 Lassen Susanville 1295 Comment
  CHSC112447  Polygonum aviculare subsp. depressum Lowell Ahart; John Dittes, Todd Sloat 2013-6-8 18735 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
  POM104627  Polygonum bistortoides Marcus E. Jones 1897-6-21 s.n. Lassen Chat. 1616 Comment
  UC1136194  Polygonum bistortoides Robert W. Gardner 1937-6-20 G- 20 Lassen Burgess Spring Halls Flat Quadrangle Comment
  CDA22783  Polygonum davisiae C. Siebe 1971-6-19 Lassen Near cattle corrals at southwest end of Westwood. 0 Comment
  CAS-BOT-BC414489  Polygonum douglasii Clare B. Hardham 1969-8-28 17432 A Lassen West of Janesville Comment
  CHSC64889  Polygonum douglasii subsp. johnstonii Vernon H. Oswald; Lowell Ahart 1995-6-19 6880 Lassen Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 0.3 mi e of Hwy. 395. In a shallow wash. 1383 Comment
  CHSC105243  Polygonum douglasii subsp. spergulariiforme Lowell Ahart; John Dittes 2010-7-31 16979 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
  JEPS104432  Polygonum douglasii subsp. spergulariiforme Lowell Ahart 2003-8-17 10515 Lassen On the west side of the paved road, on the east side of Highway 36, ca 1/4 mile southwest of the Susan River, ca 8 miles (air) southwest of Susanville. 1433 Comment
  UC6681  Polygonum douglasii subsp. spergulariiforme M. S. Baker and Frank Nutting 1894-1 Lassen Comment
  JEPS50618  Polygonum persicaria W. L. Jepson 1939-8-11 19377 Lassen Milford 1280 Comment
  CHSC58850  Polygonum polygaloides subsp. confertiflorum Vernon H. Oswald; Lowell Ahart 1992-7-16 5104 a Lassen Long Lake on the S side of Hwy. 44 between Old Station and Susanville, 1.2 mi SE of County Rd. A21. 1745 Comment
  HSC82191  Polygonum polygaloides subsp. confertiflorum Thomas W. Nelson, Jane P. Nelson 1980-7-6 6041 Lassen Along Ash Creek at Ash Creek Campground 1494 Comment
  JEPS22874  Polygonum polygaloides subsp. confertiflorum Herbert L. Mason Jul 29 1955-Jul 31 1955 14639 Lassen Pine Creek Flat Comment
  RSA339992  Polygonum polygaloides subsp. confertiflorum Noel Holmgren, Patricia K. Holmgren 1980-7-3 9466 Lassen Hwy 395, 7.4 km (4.6 mi) south of Ravendale. 1620 Comment
  UC1137591  Polygonum polygaloides subsp. confertiflorum A. Simontacchi 1940-6-15 875 Lassen 6.4 mi wnw Cone Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC60385  Polygonum polygaloides subsp. kelloggii Mary Ann Showers 1992-6-12 2529 Lassen Lassen Volcanic National Park. Meadow enclosed by lava flow, Butte Lake. 1859 Comment
  UC1136190  Polygonum polygaloides subsp. kelloggii A. Simontacchi 1940-5-28 781 Lassen 3.2 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UCD100647  Polygonum ramosissimum Verne Grant; Irving Schneider 1947-8-1 8227 Lassen Southwest into State Fish and Game nesting area on west end of Section 19, Madeline Plain. Comment
  UC1136188  Polygonum sawatchense subsp. sawatchense A. Simontacchi 1940-5-28 780 Lassen 3.2 mi wsw Patterson Mt.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC1609438  Polygonum sawatchense subsp. sawatchense Vernon H. Oswald and Lowell Ahart 1993-6-14 5518 Lassen Eagle Lake Rd (Lassen A1) 0.5 mi w Spaulding Tract Rd. (Rd. 518, 33N89) (ca 3 mi w of Eagle Lake) 1810 Comment
  UC465764  Polygonum shastense Franklin P. Nutting Lassen Silver Lake Comment
  CAS-BOT-BC420978  Polygonum spergulariiforme Alice Eastwood; John Thomas Howell 1940-6-11 7976 Lassen Big Valley Mts. Comment
  UCD54545  Populus fremontii subsp. fremontii Ellen Dean; Petra Unger, Dawn Cunningham 2005-10-10 2729 Lassen E. of town of Susanville. Private property N of California Correctional Facility. 1248 Comment
  CHSC13799  Populus tremuloides Cathy Crittenden 1970-7-9 41 Lassen Antelope lookout. 2316 Comment
  POM107357  Populus trichocarpa Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CHSC13649  Porterella carnosula M. S. Taylor 1974-7-13 308 Lassen Abundant along edge of Mahogany Lake, ca. 3 mi s of Eagle Lake Field Station, ca. 13 mi ne of Susanville. 1524 Comment
  CHSC29937  Porterella carnosula Robin L. Ondricek 1978-6-22 68 Lassen A the NE edge of Mahogany Lake. 2057 Comment
  UC526144  Porterella carnosula John Thomas Howell 1934-7-7 12466 Lassen near Feather Lake; near Feather Lake 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
  SEINET10460844  Porterella carnosula Baker 1894-7-21 Baker s.n. Lassen Near Eagle Lake. 1524 Comment
  SEINET5334401  Portulaca oleracea Unknown 1942-8-31 s.n. Lassen Honey Lake Valley. 1067 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
  CHSC4839  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
  CHSC100538  Potamogeton foliosus Daniel B. Marcum 2007-7-25 Lassen 6 miles south of Bieber in Big Valley. Robin Harbert's wild rice field. 1280 Comment
  SEINET9336258  Potamogeton foliosus Unknown 2007-7-25 Lassen 6 mi S of Bieber in Big Valley. Robin Harbert's wild rice field. Weed. Common name: leafy pondweed. Comment
  JEPS103228  Potamogeton illinoensis G. Schoolcraft 1996-9-11 2562 Lassen Willow Creek below petroglyphs and above dam 1432 Comment
  SD6454  Potamogeton natans Mrs. R. M. Austin 1879-1 Lassen Lassen County Comment
  UC1100079  Potamogeton pectinatus Verne Grant, Irving Schneider 1947-7-29 8182 Lassen 1 mi e (upstream) of Tule Lake; Cedar Creek Comment
  CAS-BOT-BC453914  Potamogeton pectinatus Verne Grant; Irving Schneider 1947-9-6 8380 Lassen North arm of Eagle Lake Comment
  UCR228123  Potamogeton richardsonii R. F. Thorne, Larry E. DeBuhr 1975-8-22 47200 Lassen Modoc Plateau, Hwy 395, c. 5 mi north of Madeline [at Smith Reservoir] and c. 5.5 mi south of Modoc Co. line 1616 Comment
  UC334643  Potamogeton striatus J. G. Lemmon Lassen Hot Spring near Honey Lake Comment
  SD215713  Potentilla biennis D. F. Howe 1964-7-31 Lassen Parsnip Creek, Warner Mountains, Modoc National Forest 1829 Comment
  UC1776675  Potentilla breweri G. Schoolcraft 1994-8-1 2390 Lassen About 2 miles W of Boot Lake 2456 Comment
  JEPS44188  Potentilla fruticosa Brown and Wieslander 1922-7-25 4 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  CHSC60849  Potentilla glandulosa subsp. ashlandica Vernon H. Oswald; Lowell Ahart 1993-6-28 5613 Lassen N of Hwy 44 on Rd. 33N06, on the SSE flank of Harvey Mtn., NNE of Burgess Meadow, NE of Poison Lake. On the edge of vernal pool. 1798 Comment
  CHSC89722  Potentilla glandulosa subsp. glandulosa L. P. Janeway 2004-6-26 8154 Lassen High Cascade Range. About 1.3 km west-southwest of Patterson Flat, at junction of Roads 35N08 and 34N20, in Blacks Mountain Experimental Forest. 1750 Comment
  CHSC13850  Potentilla gracilis var. fastigiata F. T. Griggs 1973-7-7 106 Lassen Lassen county Cone Spring. Comment
  RSA504625  Potentilla gracilis var. fastigiata Bruce Bartholomew 1988-6-25 4373 Lassen Long Valley, southern end of the Warner Mountains 2080 Comment
  CAS-BOT-BC540369  Potentilla gracilis var. fastigiata B. C. Cain 1925-8-24 76 Lassen 1 mi. below Drakesbad, Mt. Lassen Nat. Park 1645 Comment
  CHSC4758  Potentilla millefolia R. Carter 1967-7-14 614 Lassen Hog Flat Reservoir, between highway 92 and shore of reservoir. Comment
  CAS-BOT-BC158515  Potentilla millefolia Clarence R. Quick 1962-6-17 62 -17 Lassen North of DeLasmutt Ranch, along a dirt road to Black Mountain E.F. Hdqrts. 1615 Comment
  CHSC27652  Prunella vulgaris var. lanceolata Jerry Snodgrass 1978-7-11 55 Lassen Papoose Creek, SE corner of Eagle Lake. 1572 Comment
  CHSC35955  Prunus andersonii M. S. Taylor 1982-5-7 4424 Lassen Reno Junction and along old road paralleling Hwy 70 just e of Beckwourth Pass. 1524 Comment
  HSC18803  Prunus andersonii Fred J. Kindel 1955-6-6 Lassen Doyle Comment
  CAS-BOT-BC154772  Prunus virginiana var. demissa Alice Eastwood; John Thomas Howell 1940-6-11 7994 Lassen Nubieber Comment
  CHSC23560  Prunus virginiana var. demissa W. O. Baum 1971-7-6 34 Lassen At top of s slope on Gallatin Peak. 2103 Comment
  UC773874  Prunus virginiana var. demissa L. R. Short, Wm. Gansberg 1936-7-3 S 466 Lassen Lassen National Forest, Burgess Spring Experiment Range Burgess Spring Experiment Range; Lassen National Forest, Burgess Spring Experiment Range 1847 Comment
  UCD113534  Prunus virginiana var. demissa W. Robert Powell 1985-7-30 3080 c Lassen about 3 miles WNW of Susanville on narrow flood plane of Piute Creek. 1402 Comment
  CAS-BOT-BC357282  Pseudognaphalium microcephalum Margaret Williams 1974-7-27 74 -L-54 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  CAS-BOT-BC239798  Pseudoroegneria spicata John Thomas Howell 1976-7-20 51999 Lassen About 5 miles west of Fredonyer Pass near confluence of Susan River and Willard Creek 1432 Comment
  UCD91494  Pseudoroegneria spicata A. A. Beetle; G. L. Stebbins Jr. 1942-5-30 3363 Lassen 10 miles NE of McArthur. Comment
  RSA123271  Pseudostellaria jamesiana L. R. Short, Wm Gansberg 1936-6-13 S 438 Lassen Burgess Springs Experiment Range. 1884 Comment
  UC1924240  Psilocarphus brevissimus Debra Valov 2004-6-8 2004244 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  CHSC27600  Psilocarphus brevissimus var. brevissimus J. D. Prouty 1978-6-28 4 Lassen Lower Dry Lakes, SE of Eagle L. Comment
  CHSC64868  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald; Lowell Ahart 1995-6-19 6897 Lassen Modoc Plateau. Between Litchfield and Ravendale on Smoke Creek Ranch Rd., 4.9 mi e of Hwy. 395. 1383 Comment
  JEPS97412  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald and L. Ahart 1995-6-19 6897 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
  POM40287  Psilocarphus elatior Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  JEPS96091  Psilocarphus oregonus Vernon H. Oswald and Lowell Ahart 1996-6-17 7794 Lassen Devils Corral Trailhead Modoc Plateau (shallow ditch just sw of parking area, located off Hwy 36 ca. 7 mi w, trailhead is access to Bizz Johnson Trail) 1420 Comment
  UC1587090  Psoralidium lanceolatum G. Schoolcraft 1991-6-12 2159 Lassen on Sierra Army Depot n Herlong; n of Herlong, Sierra Army Depot 1234 Comment
  CAS-BOT-BC453500  Pterospora andromedea John Thomas Howell; Gordon H. True 1973-7-31 50024 Lassen Sierra Nevada, on road from Janesville to Thompso Peak, Diamond Range 1737 Comment
  CDA38860  Pterospora andromedea H. Wilkerson & W. F. Cruickshank Sep 1964 s.n. Lassen Hayden Hill. 0 Comment
  SEINET200160 Image available Puccinellia distans Malcolm A. Nobs, S. Galen Smith 1949-7-22 1070 Lassen Northeast shore of Eagle Lake. Comment
  UCD91859  Puccinellia distans Malcolm A. Nobs; S. Galen Smith 1949-7-22 1070 Lassen NE shore of Eagle Lake. Comment
  CAS-BOT-BC239824  Puccinellia lemmonii James Jokerst 1983-7-24 1884 Lassen Near Madeline Plains 1614 Comment
  UCD149767  Puccinellia lemmonii William Anderson 1963-6-21 s.n. Lassen Honey Lake Valley. Comment
  SEINET4890224  Puccinellia lemmonii N. H. Holmgren, P. Holmgren 1978-6-13 8939 Lassen 2.7 km (1.7mi) north-west of Wendel. 1250 Comment
  RSA647519  Puccinellia nuttalliana Marion P. Harthill 1972-6-17 801 Lassen Standish. Comment
  UCD92258  Puccinellia simplex Leo Whitney 1935-3-2 3012 Lassen Rosamond Lake, Mohave Desert. Comment
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Apr 29 2013
  CHSC23564  Purshia tridentata W. O. Baum 1971-6-28 42 Lassen Along fire trail on e slope of Gallatin Peak. 1920 Comment
  CHSC5019  Purshia tridentata L. G. Bennett 1967-7-1 81 Lassen 4 miles from Eagle Lake Biological Station on road to Gallatin Beach. 1676 Comment
  SJSU14478  Purshia tridentata W. D. Pitts 1970-5-29 301 Lassen by Hwy 395, 5 mi N of Doyle Comment
  SEINET10542491  Purshia tridentata Douglas G. LeDoux, David B. Dunn 1973-5-25 LeDoux 894 Lassen 3 miles n of milford, on hwy 395 at honey lake campgrounds Comment
  CAS-BOT-BC147819  Purshia tridentata var. tridentata Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16321 Lassen Along California Highway 36, about 6 miles W of Susanville Comment
  CAS-BOT-BC147823  Purshia tridentata var. tridentata John Thomas Howell; Gordon H. True; Margaret Williams 1973-5-12 49161 Lassen Elysian Valley northwest of Janesville 1325 Comment
  CAS-BOT-BC147867  Purshia tridentata var. tridentata George W. Gillett 1957-9-4 1129 Lassen Near outlet of Widow Lake, ca. 50 yards from lake 2057 Comment
  UC1137302  Purshia tridentata var. tridentata L. R. Short and Wm. Gansberg 1936-7-9 S- 482 Lassen Burgess Spring Experimental Range; Lassen National Forest 1792 Comment
  UC467830  Purshia tridentata var. tridentata Franklin P. Nutting Lassen Pine Creek Comment
  JEPS28661  Pyrola asarifolia George W. Gillett 1957-7-22 880 Lassen Snag Lake, South shore near Campsite 1850 Comment
  CAS-BOT-BC462754  Pyrola dentata Marcus E. Jones 1897-6-28 s.n. Lassen Diamond Mt., Susanville. Perkin's Ranch 2133 Comment
  CAS-BOT-BC462758  Pyrola dentata Louella Bass 1973-6-23 EU- 130 Lassen Elysian Valley 1325 Comment
  UCD18973  Pyrola picta Raymond D. Ratliff 1965-7-29 35 Lassen Lassen National Forest, Harvey Valley and Champ's Flat Allotments (HV 19-13, CF 19-6). 1706 Comment
  CAS-BOT-BC362266  Pyrrocoma carthamoides var. cusickii Ralph K. Gierisch 1968-7-11 3342 Lassen Lassen National Forest. Harvey Valley 1676 Comment
  POM39973  Pyrrocoma carthamoides var. cusickii Marcus E. Jones 1897-6-30 s.n. Lassen Eagle Lake, 27 miles from Susanville 1524 Comment
  UC1609363  Pyrrocoma carthamoides var. cusickii Vernon H. Oswald and Lowell Ahart 1993-7-8 5667 Lassen Pittville Rd (Lassen 111, 36N01) 3.0 mi n Hwy 44 (ne of Poison Lake) 1709 Comment
  UC1561924  Pyrrocoma hirta var. hirta Barbara Ertter 1987-7-25 7312 a Lassen Pine Creek Valley at junction of Bridge Creek Springs Road ca 22 airmiles nw Susanville; Pine Creek Valley 1737 Comment
  UC1136851  Pyrrocoma hirta var. lanulosa L. R. Short and J. Warren 1936-8-17 S- 496 Lassen Burgess Spr. Exp. Range 1783 Comment
  UC35843  Pyrrocoma hirta var. lanulosa M. S. Baker and F. Nutting 1894-7-21 Lassen Eagle Lake Comment
  CDA8517  Pyrrocoma lanceolata var. lanceolata T. C. Fuller 1980-8-6 20315 Lassen North of Smoke Creek Ranch Road, 2 km west of the state line, 28.75 km (18.5 miles) northeast of Highway 395, northeast of Ravendale. 0 Comment
  UCD135332  Pyrrocoma lanceolata var. subviscosa Richard Alan Mayes 1973-7-23 89 Lassen 43 miles south of Alturas, on US Hwy 395. Comment
  RSA88088  Pyrrocoma racemosa var. paniculata J. T. Howell 1951-8-20 28227 Lassen Honey Lake Valley near Herlong 1280 Comment
  UC1192231  Pyrrocoma racemosa var. paniculata Verne Grant and Irving Schneider 1947-9-6 8392 Lassen near Wendel (w of Fleming Rach Headquarters) Comment
  CAS-BOT-BC105244  Quercus kelloggii M. B. Kildale 1927-9-11 2791 Lassen Susanville 1524 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
  RSA67201  Quercus kelloggii P. A. Munz 1951-9-15 16986 Lassen On dry flats, 6 mi west of Bieber. 1341 Comment
  RSA715982  Quercus kelloggii L. Ahart, John Dittes 2005-6-2 11942 Lassen 1.5 miles NE of the Anderson Ranch home, Long Valley, 6 miles (air) N of intersection of Scott Road and Hwy 70, 7.5 miles (air) NW of Hallelujah Jct. 1602 Comment
  UC735118  Quercus kelloggii Lincoln Constance 1946-7-3 3096 Lassen 2 mi nw Milford (near Honey Lake) 1280 Comment
  UCD46733  Quercus kelloggii John Thomas Howell 1976-7-19 51946 Lassen Southwest of Susanville on Gold Run Road, Lassen County. 1341 Comment
  UC1126215  Ranunculus alismifolius var. alismifolius A. Simontacchi 1940-5-13 705 Lassen 6.4 mi nw Harvey Valley Ranger Station; Lassen National Forest, Halls Flat Quadrangle Comment
  CHSC6244  Ranunculus alismifolius var. hartwegii R. Gein 1946-6-11 Lassen Eagle Lake. 1580 Comment
  HSC18114  Ranunculus alismifolius var. hartwegii R. J. Vernimen 1963-5-4 49 Lassen 10 mi. N of Mineral on Hwy. 36 Comment
  CDA24294  Ranunculus aquatilis Gordon Leppig 1998-7-13 969 Lassen Modoc National Forest. Blue Lake Ranch. Comment
  CHSC36348  Ranunculus aquatilis var. capillaceus M. S. Taylor 1982-6-12 4647 Lassen In pond s side of Hwy 36, n side of West Fork Susan River, at jct with Willow Creek Rd, ca. 8 mi w of Susanville. 1463 Comment
  CHSC110303  Ranunculus aquatilis var. diffusus L. P. Janeway; B. Castro 2012-7-2 10932 Lassen Modoc Plateau. East side of Skedaddle Mountains; large meadows along Skedaddle Creek, just upstream from 'Skedaddle Ranch. 1600 Comment
  CHSC112752  Ranunculus aquatilis var. diffusus Lowell Ahart; John Dittes 2013-7-23 18891 Lassen Margins of a man made pond, about 150 yards north of the four tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CAS-BOT-BC379022  Ranunculus aquatilis var. diffusus Peter H. Raven; Otto T. Solbrig 1958-6-17 13256 Lassen in a pond along United States Highway 395, 7.1 mi west of Standish Comment
  CHSC57503  Ranunculus cymbalaria var. saximontanus Shelly A Kirn 1991-4-21 21 Lassen S of Lassen County Youth Camp bordering Eagle Lake Field Station property. 1560 Comment
  CHSC14062  Ranunculus glaberrimus var. ellipticus Tim Manolis 1974-2-16 16 Lassen 2 1/4 mi e of Eagle Lake Field Station. Comment
  JEPS107460  Ranunculus occidentalis var. occidentalis Lowell Ahart, John Dittes 2005-6-1 11857 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
  SBBG28521  Ranunculus occidentalis var. ultramontanus M. S. Baker 1952-5-23 Lassen Hwy 36, between Chester and Fredonyer Pass Comment
  CHSC7731  Ranunculus orthorhynchus Beverley J. Wise 1969-4-28 88 Lassen 9 mi. east of Susanville on south side of Las. Co. Rd. 215. Meadow. 1371 Comment
  CHSC64807  Ranunculus testiculatus Vernon H. Oswald 1995-5-24 6762 Lassen Modoc Plateau. Wendel Rd. (Lassen 320) 3.3 mi e of Amedee Rd. at Wendel. At the base of the Amedee Mtns. 1249 Comment
  JEPS127178  Rhaponticum repens Lowell Ahart, John Dittes 2016-7-15 21229 Lassen In Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. Comment
  CHSC13607  Ribes Lynn R Thomas 1969-4-17 93 Lassen 100 yds up slope w of back of Lassen Memorial Hospital, Susanville. Boundary between T29N and T30N. 1310 Comment
  UC11663  Ribes aureum J. Burtt Davy Jun 17 1897-Jun 24 1897 Lassen Amedee Honey Lake Valley Comment
  CHSC99274  Ribes aureum var. aureum Lowell Ahart; John Dittes 2008-6-20 14950 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1263 Comment
  JEPS114691  Ribes aureum var. aureum Lowell Ahart, John Dittes 2008-6-20 14950 Lassen About 300 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber 1263 Comment
  CAS-BOT-BC93388  Ribes cereum Barbara Shervanick 1974-5-8 1272 Lassen Eagle Lake Road, on the west side of Eagle Lake, about 18 miles north of SR 36. Eagle Lake drainage area. Cascades. 1584 Comment
  CDA25528  Ribes cereum J. R. Keck Jr. 1977-7-13 Lassen Near Puls Camp east of Blacks Mountain, Lassen National Forest. Comment
  UC1127635  Ribes cereum A. Simontacchi 1940-6-15 882 Lassen 0.4 mi nw Blacks Mtn.; Lassen National Forest, Halls Flat Quadrangle Comment
  UC699688  Ribes hudsonianum var. petiolare J. L. Mielke, J. W. Kimmey 1941-6-29 Lassen Silver Creek (Lost Lake) Warner Mountains, Modoc National Forest Comment
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Jul 19 2010
  JEPS49414  Ribes inerme var. inerme Franklin P. Nutting 1894-7-12 Lassen Pine Creek Comment
  CHSC6264  Ribes roezlii L. Harman 1946-6-23 Lassen Eagle Lake. Roop mountain. 2133 Comment
  UC747328  Ribes roezlii G. Thomas Robbins 1945-10-6 2150 Lassen near sw summit Crater Lake Mountain; Lassen National Forest 2194 Comment
  SEINET10482949  Ribes roezlii Mary Susan Taylor 1974-1 Taylor 285 Lassen Vicinity of Eagle Lake, ca. 13 mi NW of Susanville. Comment
  CHSC42153  Ribes velutinum C. E. Laver 1985-7-20 Lassen Ca. 8 mi se of hayden Hill and 1 mi nw of Said Valley Reservoir. 1584 Comment
  JEPS49252  Ribes velutinum W. L. Jepson 1918-8-5 7820 Lassen near South Fork Peak 1463 Comment
  UC1136911  Ribes velutinum L. R. Short and Wm. Gansberg 1936-7-9 S- 481 Lassen MDM, Burgess Spr. Exp. Range Lassen Forest 1783 Comment
  UCR17289  Ribes velutinum Frank C. Vasek 1975-7-11 750711- 19 Lassen Modoc Plateau, State Hwy 139, [Said Valley] 2 mi north of Grasshopper Valley at the junction with Termo Rd. 1650 Comment
  RSA0023962  Ribes velutinum Marcus E. Jones 1897-6-25 s.n. Lassen Susanville. 1341 Comment
  CAS-BOT-BC363011  Rigiopappus leptocladus Arnold Tiehm; Jan Nachlinger; Margaret Williams 1988-6-2 11700 Lassen South side of Shaffer Mt., 3.4 road miles north of the Wendel road on highway 395 from Susanville to Alturas, west of the highway 1386 Comment
  JEPS119648  Rorippa curvisiliqua Lowell Ahart, John Dittes 2012-7-9 18292 Lassen Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. Comment
  CHSC36472  Rorippa nasturtium-aquaticum Jeffrey R. Peek 1982-6-4 33 Lassen Ca. 50 yds along Willow Creek from its beginning in Murrers Upper Meadow. Comment
  NY182161  Rorippa sinuata G. Schoolcraft 1983-6-22 1018 Lassen Comment
  CHSC12477  Rosa woodsii subsp. ultramontana Carol Weld 1969-6-26 42 Lassen Springs near roadside, 7.8 miles S.W. of Eagle Lake Field Station. 1584 Comment
  CHSC61590  Rosa woodsii subsp. ultramontana Arthur C. Barrett 1915-8-18 33 Lassen Plumas Forest. Laufman Ranger Station. 1463 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
  JEPS45632  Rosa woodsii var. ultramontana Brown and Wieslander 1928-6-16 Lassen Eagle Lake 1584 Comment
  CHSC66728  Rotala ramosior Vernon H. Oswald; Lowell Ahart 1996-8-1 8105 Lassen Mountain Meadows Reservoir SW of Westwood. Growing on the receding shore of the reservoir NE of Indian Ole Dam. 1539 Comment
  HSC19712  Rubus parviflorus M. S. Baker 1890-1 Lassen Milford Comment
  CHSC25904  Rumex K. R. Stern 1967-6-30 2445 Lassen West central side of Eagle Lake. 1554 Comment
  UC1536793  Rumex crispus Gordon H. True Jr. 1939-7-6 1037 Lassen George Bailey Ranch Honey Lake Valley Comment
  CDA23167  Rumex hymenosepalus Sterling O. Mattoon 1977-5-3 Lassen Highway 395 at North Access Road to Herlong. 0 Comment
  CAS-BOT-BC433632  Rumex lacustris Peter H. Raven; Otto T. Solbrig 1958-6-17 13266 Lassen Along United States Highway 395, 11.8 miles north-east of Litchfield Comment
  CHSC65317  Rumex occidentalis Vernon H. Oswald 1995-8-21 7210 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the marshy edge of the lake. 1859 Comment
  UC1037331  Rumex paucifolius Leo Whitney 1934-7-3 1954 Lassen 14 mi w Eagle Lake (Bogard Ranger Station); Lassen National Forest 1737 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
  UC1036081  Rumex salicifolius var. lacustris Annie M. Alexander and Louise Kellogg 1946-8-11 5154 Lassen nw end Eagle Lake (Sam Webb's Hunting Cabins) Comment
  UC1520656  Rumex salicifolius var. lacustris Noel H. Holmgren and Patricia K. Holmgren 1980-7-3 9475 Lassen 0.7 mi w (1.1 km w) U. S. Hwy 395 (a valley road, from a turnoff 6.4 mi (10.3 km) s of Madeline); Madeline Plains 1615 Comment
  UC6951 Image available Rumex salicifolius var. lacustris M. S. Baker and Frank Nutting 1894-7-30 Lassen Silver Lake Comment
  UC1594643  Rumex salicifolius var. triangulivalvis Vernon H. Oswald and Lowell Ahart 1992-7-16 5123 Lassen 1.3 mi n Hwy. 44 and McCoy Flat Reservoir (between Old Station and Susanville, w of the Cinder Pit on the logging road paralleling the e side of Bridge Creek, swamp on Bridge Creek); Bridge Creek 1719 Comment
  RSA0039530  Rumex triangulivalvis Lowell A. Ahart, John Dittes 2012-7-9 18302 Lassen About 100 yards southeast of the tall poles, Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. 1267 Comment
  CHSC77225  Rumex venosus G. Schoolcraft 1993-6-1 2267 Lassen Along Hwy 395 about 1.5 mi n. of turnoff to Wendel. 1280 Comment
  RSA249402  Rumex venosus Thomas W. Nelson, S. Dowty 1971-7-22 19300 Lassen Along Hwy 395, about 4 miles east of Standish Comment
  SEINET8584738  Rumex venosus W. Harnach 2011-6-4 1247 Lassen NE slope of Turtle Mtn., Fort Sage Mtns., Honey Lake Valley, approx. 7.5 miles NE of Doyle, CA on the Fort Sage Road. 1329 Comment
  UC568  Sagittaria State Geological Survey 1800-1 2189 Lassen Comment
  CHSC4993  Sagittaria cuneata R. Clicquennoi 1967-7-1 21 Lassen At edge of small roadside pool 16 mi n of Susanville on highway 139. 1524 Comment
  UC1051438  Sagittaria cuneata Herbert L. Mason 1955-8-13 14647 a Lassen Willow Creek Valley Comment
  CAS-BOT-BC445672  Sagittaria cuneata Jean L. Pawek 1964-8-16 604 Lassen Lake Almanor near Chester 1371 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
  HSC95346  Salix eastwoodiae Gordon Leppig, J. Cromwell 1997-7-27 608 Lassen Modoc National Forest, Blue Lake Ranch. 1970 Comment
  POM106762  Salix eastwoodiae Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt., Susanville, Perkin's Ranch. 2226 Comment
  SEINET3260830  Salix exigua Marcus E. Jones 1897-6-28 Lassen Susanville. 1340 Comment
  CAS-BOT-BC107958  Salix geyeriana John Thomas Howell 1976-7-20 s.n. Lassen Bottom flats along Willard Creek near its confluence with Susan River, about 5 miles west of Fredonyer Pass - Sierra Nevada 1432 Comment
  NY430479  Salix laevigata G. Schoolcraft 1994-8-2 2413 Lassen About 1.5 miles southwest of Boot Lake 2011.7 Comment
  CHSC13668  Salix lemmonii E. L. Smith 1971-4-28 946 A Lassen On Dry Creek at Clear Creek Junction. 1493 Comment
  CHSC66404  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1996-6-17 7790 Lassen Modoc Plateau. Bizz johnson Trail accessed at Devils Corral Trailhead located off of Hwy. 36 ca. 7 mi W of Susanville. Growing on the edge of the Susan River at the Hwy. 36 bridge. 1402 Comment
  CAS-BOT-BC126174  Salix scouleriana Hans Leschke 1964-9-3 1891 Lassen Cinder Cone, Lassen Volcanic Nat. Park Comment
  CHSC7680  Salvia dorrii Beverly J. Wise 1969-5-16 Lassen 24 mi. east of Susanville on Las. Co. Rd. 216 off Las. Co. Rd. 215. 1524 Comment
  SEINET201595  Salvia dorrii var. dorrii Arthur Cronquist, Arthur H. Holmgren 1959-6-17 8462 Lassen 50 miles southeast of Susanville. Comment
  JEPS5934  Sambucus racemosa var. microbotrys Frances D. Payne 1929-7-12 80 Lassen Lost Lake Warner Mountains (se extremity of mts.) 2286 Comment
  UC1598734  Sanicula tuberosa M. S. Baker and Frank Nutting 1894-7-9 Lassen Pine Creek Comment
  SEINET10579543  Sanicula tuberosa Katherine L. Morris, David B. Dunn; Melvin L. Conrad 1973-5-25 Morris 242 Lassen Collected 7.6 mi. NW of Jct. of Hwy 36 & 44 on Hwy 44. Comment
  CAS-BOT-BC110336  Sarcobatus vermiculatus Louella Bass 1982-6-20 s.n. Lassen West of Karlo. Comment
  RSA79261  Sarcobatus vermiculatus E. K. Balls 1952-10-10 18136 Lassen 5.2 miles W of Standish, Hwy 395, Susanville to Alturas. 1250 Comment
  UCD101770  Sarcobatus vermiculatus Beecher Crampton 1960-6-19 5730 Lassen southeast of Karlo; along U.S. Hwy 395. Comment
  UC1121106  Sarcodes sanguinea A. Simontacchi 1940-6-17 883 Lassen 1.4 miles S of Patterson Mtn. 1821 Comment
  CAS-BOT-BC466201  Sarcodes sanguinea Peter H. Raven; Otto T. Solbrig 1958-6-16 13254 Lassen Along State Hwy 36, 0.3 mi E of summit of Fredonyer Pass Comment
  CAS-BOT-BC466321  Sarcodes sanguinea John Thomas Howell 1973-7-10 49786 Lassen Sierra Nevada, Fredonyer Pass 1737 Comment
  UC1127669  Saxifraga nidifica var. nidifica A. Simontacchi 1940-5-14 726 Lassen 4.1 mi wnw of Aspen Well (Lassen National Forest); Lassen National Forest 1767 Comment
  UC1542944  Saxifraga nidifica var. nidifica G. Schoolcraft 1987-4-29 1685 Lassen Lonkey Hill 1432 Comment
  RSA0009383  Saxifraga oregana Marcus E. Jones 1897-6-30 s.n. Lassen Susanville, 4 miles below Eagle Lake. 1524 Comment
  UC1142964  Schoenoplectus acutus var. acutus A. L. Hormay 1941-6-17 23 Lassen meadow lake near Westwood; Lassen National Forest, meadow lake near Westwood 1615 Comment
  RSA252375  Schoenoplectus acutus var. occidentalis Robert F. Thorne, C. W. Tilforth 1969-9-6 39256 Lassen Sandy Flats along Long Valley Creek, c. 14 miles SE of Milford 1311 Comment
  RSA0009705  Schoenoplectus acutus var. occidentalis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  POM111523  Schoenoplectus fluviatilis Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  RSA719709  Schoenoplectus pungens Michael A. Vincent, K. Levings 2006-7-29 12919 Lassen Along Rt 395, 46.9 road miles SE of Johnstonville, 13.9 miles N of Sierra County line. Comment
  JEPS28334  Scirpus congdonii George W. Gillett 1957-8-9 1011 Lassen near Summit Lake (East Fork Hat Creek); Lassen Volcanic National Park, East Fork Hat Creek 2026 Comment
  CHSC61594  Scirpus microcarpus Arthur G. Barrett 1915-8-18 35 Lassen Plumas National Forest. Laufman Ranger Station. 1463 Comment
  CAS-BOT-BC240002  Scribneria bolanderi Alice Eastwood; John Thomas Howell 1940-6-11 7974 Lassen Big Valley Mts. Comment
  RSA165466  Scrophularia lanceolata Clare B. Hardham 1961-6-17 7531 a Lassen Rte 395 Alturas Susanville Road 1524 Comment
  CAS-BOT-BC214260  Scutellaria nana Arnold Tiehm; James Young; Raymond Evans 1984-6-7 8591 Lassen Flats on the northwest side of Shaffer Mountain, 7.5 air miles north-northwest of Litchfield 1371 Comment
  UC1137775  Scutellaria nana August L. Hormay 1934-7-2 Lassen 1/4 mi nw of Black's Mountain; Lassen National Forest 1706 Comment
  SEINET13947826 Image available Scutellaria nana Clarence R. Quick 1964-1 64 -92 Lassen Cal Mt. E of Poison Lake; ca 5800 ft alt. 1768 Comment
  CAS-BOT-BC46020  Sedum lanceolatum Clare B. Hardham 1971-8-22 18425 Lassen Diamond Mountain 2346 Comment
  CHSC20308  Senecio hydrophiloides S. Villard 1973-7-7 63 Lassen Meadow, off county dirt road, 5 mi from Red-Rock Lookout. 2133 Comment
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Apr 29 2013
  UC1609237  Senecio hydrophiloides Vernon H. Oswald and Lowell Ahart 1993-6-28 5600 Lassen Rd 35N04 at Aspen Well (n of Hwy 44 on nw edge of valley, ne of Poison Lake); Harvey Valley 1725 Comment
  HSC42542  Senecio hydrophilus Barbara Kelly 1977-8-9 564 Lassen 15 miles east of Madeline on a dirt road from Adin Comment
  HSC28835  Senecio integerrimus D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19263 Lassen In Harvey Valley near Cone Springs Comment
  UCD135546  Senecio integerrimus Grady L. Webster 1989-5-13 7702 Lassen Butterfly Valley area. Aound 1 mile northwest of crossing of Big Blackhawk Creek. 1066 Comment
  CAS-BOT-BC363810  Senecio integerrimus var. exaltatus John Thomas Howell 1934-6-14 12158 Lassen Near Lost Lake, Warner Mts. 2438 Comment
  JEPS94603  Senecio integerrimus var. exaltatus Vernon H. Oswald and Lowell Ahart 1997-5-27 8508 Lassen on Forest Route 38N04 0.3 mi e Hwy. 139 (n of Susanville (between Hwy 139 near Willow Creek Guard Station and Coyote Flat), between the road and a small creek) 1560 Comment
  HSC90792  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen Ridge of Diamond Mtns, ca. 1.5 mi. E of Diamond Peak, ca. 10 air mi due S of Susanville. 2256 Comment
  UC1562885  Senecio triangularis Barbara Ertter 1988-7-25 7870 Lassen ridge of mts. ca 1.5 mi e Diamond Peak (ca 10 airmiles due s of Susanville); Diamond Mts. 2255 Comment
  UCD135803  Senecio triangularis T. I. Storer 1932-7-31 s.n. Lassen Upper King Creek Meadows, Lassen Volcanic Nat'l Park. 2286 Comment
  JEPS15485  Sidalcea oregana subsp. oregana Joseph and Hilda Grinnell 1938-6-13 1099 a Lassen on a sage flat near Ravensdale; near Ravensdale 1554 Comment
  POM260877  Sidalcea oregana subsp. oregana Alice Eastwood, J. T. Howell 1940-6-11 7982 Lassen Big Valley Mountains. Comment
  RSA719898  Sidalcea oregana subsp. oregana Michael A. Vincent, K. Levings 2006-7-29 12906 Lassen Along Rte. 36, 14.3 miles west of Susanville Comment
  JEPS28713  Sidalcea oregana subsp. spicata George W. Gillett 1957-7-29 944 Lassen along trail between Butte Lake and Snag Lake; Lassen Volcanic National Park, btw Butte Lake and Snag Lake 1859 Comment
  JEPS67272  Sidalcea oregana subsp. spicata Brown and Wieslander 1922-7-18 65 Lassen Martin Sprs , Martin Sprs (Eagle Lake) Comment
  POM253297  Sidalcea oregana subsp. spicata A. A. Heller 1938-7-28 15303 Lassen 1 mile East of Westwood. 1524 Comment
  JEPS28445  Silene bernardina George W. Gillett 1957-7-24 896 Lassen dry flats between Cameron Meadow and Snag Lake (Lassen Volcanic National Park); , btw Cameron Mdw and Snag Lake 1950 Comment
  UC773919  Silene douglasii L. R. Short and D. Gish 1936-7-15 S- 487 Lassen Burgess Spring Experiment Range Lassen Forest, Burgess Spring Experiment Range 1743 Comment
  SEINET8223955  Silene menziesii Richard R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  RSA722689  Silene menziesii subsp. menziesii R. R. Halse 2006-8-3 6992 Lassen Modoc National Forest; along Blue Lake Road north of Blue Lake, ca. 15 miles ESE of Likely. 1860 Comment
  CHSC115594  Silene nuda Lowell Ahart; John Dittes 2015-7-14 20334 Lassen On the west side of the road, about 100 yards southwest of where the levee road crosses Big Valley Canal, in Big Valley, about 4 miles (air) northeast of the Headquarters at Ash Creek State Wildlife Area, about 7 miles (air) northeast of Bieber. 1271 Comment
  JEPS50953  Silene nuda W. L. Jepson 1918-8-3 7802 Lassen near Buntingville (at Raker Ranch, Honey Lake Valley); Honey Lake Valley, at Raker Ranch 1219 Comment
  UC120167  Silene nuda unknown 1892-6-24 Lassen Honey Lake Comment
  CAS-BOT-BC389544  Silene nuda Paul F. Covel 1937-7-19 755 Lassen Westwood Airport Comment
  CAS-BOT-BC389548  Silene nuda David D. Keck 1944-7-8 5446 Lassen Sierra Nevada. 2 mi. E. of Westwood, meadow leading to Mountain Meadows Reservoir 1524 Comment
  CHSC116070  Sisymbrium altissimum Lowell Ahart; John Dittes 2015-7-13 20316 -A 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
  CHSC5243  Sisymbrium altissimum L. Harman 1946-6-25 Lassen Eagle Lake. S. S. Camp at Webbs. 1584 Comment
  NY189188  Sisymbrium altissimum B. Anderson 1986-7-9 3123 Lassen Road to Day, about 2.4 km N of Rte. 299. 1065 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-BC365752  Solidago spectabilis Lassen 1927 G. S. Crew 1927-7-15 82 Lassen Lassen National Forest. Feather Lake 1737 Comment
  CHSC65299  Solidago velutina subsp. californica Vernon H. Oswald 1995-8-21 7207 Lassen Warner Mtns. Blue Lake located ca. 13 mi SE of Likely. On the W side of the lake. 1859 Comment
  JEPS103173  Solidago velutina subsp. californica G. Schoolcraft 1994-8-29 2426 Lassen About 1 mile west of Susanville up Piute Creek 1341 Comment
  SEINET7707308  Sorbus californica G. Schoolcraft 1997-1 2672 Lassen Diamond Mountain, N slope 2317 Comment
  CHSC41847  Sparganium emersum subsp. emersum P. V. Caldwell 1972-7-13 297 Lassen Eagle Lake. In Papoose Ck. From the road that crosses the creek towards Papoose Meadow, 1st 600 m. Comment
  POM119382  Sparganium eurycarpum Marcus E. Jones 1897-6-24 s.n. Lassen 10 to 15 miles west from Amedee. 1219 Comment
  CAS-BOT-BC438841  Sparganium natans Andrew Townesmith; Karen M. Meyer 2007-7-22 844 Lassen Lassen National Forest, Almanor Ranger District. 0.25 miles west of Forest Service road 10 on Forest Service road 31N24. 1981 Comment
  CHSC66424  Sparganium natans Vernon H. Oswald 1996-6-15 7766 Lassen Modoc Plateau. Papoose Meadows located ca. 2 mi S of Gallatin Beach at Eagle Lake, NW of Susanville. In Papoose Creek where it leaves the meadow. 1633 Comment
  UC2042785  Sphaeromeria cana Barbara Ertter with Gary Schoolcraft 1987-6-16 7192 Lassen Skeedaddle Mountains on NE side of Honey Lake, on S side of Hot Springs. Comment
  CAS-BOT-BC383109  Spiraea douglasii Andrew Townesmith; Karen M. Meyer 2007-7-20 840 Lassen Lassen National Forest, Eagle Lake Ranger District. Along Forest Service road 30N03, 0.5 mile from intersection with state route 36, at roadblock where two decrepit bridges cross Susanville River 1429 Comment
  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
  CHSC66279  Spirodela polyrhiza Vernon H. Oswald; Lowell Ahart 1996-6-24 7883 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 a meadow on th E side of Papoose Creek N of the springs. 1633 Comment
  CHSC41843  Stachys ajugoides var. rigida P. V. Caldwell 1972-7-8 262 Lassen Eagle Lake. 1 mile from the forest road toward Papoose Meadows on Papoose Creek. Comment
  SEINET7977004  Stachys rigida C. G. Gulling 1905-1 s.n. Lassen Big Meadows. Comment
  SD8165  Stellaria calycantha Mrs. R. M. Austin August 1882 Lassen Comment
  CHSC4785  Stellaria longipes var. longipes R. Carter 1967-6-29 574 Lassen In Murrer's Meadow, 100 yds. SE of dam. 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
  POM42274  Stenotus acaulis Marcus E. Jones 1897-6-28 s.n. Lassen Top of Diamond Mt. Susanville. Perkin's Ranch. 2226 Comment
  CDA18319  Stephanomeria exigua G. D. Barbe 1974-8-2 1930 Lassen Long Valley; Hallelujah Junction, northwest corner of jct of US Hwy 395 and Hwy 70. 1524 Comment
  CAS-BOT-BC375595  Stephanomeria lactucina Margaret Williams; Steven Williams 1974-7-26 74 -L-12 Lassen Area near Hallelujah Junction, west of Hwy 395 and south of Hwy 70 1493 Comment
  SEINET11262513  Stephanomeria lactucina Robert L. Johnson, Mikel R. Stevens 2015-7-10 3939 Lassen Southern Cascade Range. North side of Westwood 0.3 rd mi west of jct with Mooney Rd on CA-36. N side of rd.; 0 1563 Comment
  CAS-BOT-BC322911  Stephanomeria tenuifolia Clare B. Hardham 1969-8-28 17429 Lassen West of Janesville, Sierra Nevada Comment
  RSA518409  Stephanomeria virgata George K. Helmkamp 1990-9-23 E 14 Lassen 20 miles N of Litchfield along U.S. Hwy 395 1433 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
  HSC22876  Stipa hymenoides John Pratt 1970-6-14 15 Lassen East of Janesville Comment
  HSC26013  Stipa hymenoides D. H. Norris, T. Nelson, S. Dowty 1971-6-22 19297 Lassen Along Hwy. 395, 4 mi. E of Standish Comment
  SEINET10523036  Stipa occidentalis Billy Joe Cox, David B. Dunn 1971-6-2 Cox 3114 Lassen 6 mi N of Hallelujah Jct on US Hwy 395, in Artemisia tridentata, Pinyon pine, Jeffery Pine along high ridge & in sandy wash. 1402 Comment
  GMDRC7738  Stipa thurberiana J. M. Andre, G. Clifton 1993-6-1 33417 Lassen Modoc Plateau: along US Hwy 395 approx 5 mi. SSE of Ravendale, between Spanish Spring and heliport site. 1661 Comment
  JEPS126469  Stipa thurberiana Jillian Pastick, Lillie Pennington, Andrea Stuemsky 2015-6-18 CA 350 -039 Lassen Take 139 towards Antelope Grade and take a right after passing the fire station. Continue on dirt road for less than 0.5 miles. Comment
  SEINET10448889  Streptanthus cordatus Billy Joe Cox 1971-6-2 Cox 2992 Lassen 6 mi. N. Of hallelujah jct on us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge & in sandy wash. 1402 Comment
  SEINET10448890  Streptanthus cordatus Paul Gallian, David B. Dunn 1971-6-2 Gallian 470 Lassen 6 mi. N. Of hallelujah jct. On us 395, in artemesia tridentata, pinyon pine, jeffrey pine along high ridge and in sandy wash. 1402 Comment
  CHSC60831  Swertia albicaulis var. albicaulis Vernon H. Oswald; Lowell Ahart 1993-6-28 5605 Lassen Rd. 35N04 at Aspen Well, N of Hwy 44 on the NW edge of Harvey Valley, NE of Poison Lake. 1725 Comment
  UC1123452  Swertia albicaulis var. albicaulis A. Simontacchi 1940-6-6 823 Lassen 3.6 mi wsw Patterson Mtn.; Lassen National Forest, Halls Flat Quad. 1737 Comment
  UC1609461  Swertia albicaulis var. albicaulis Vernon H. Oswald and Lowell Ahart 1993-6-28 5605 Lassen ne of Poison Lake (at Aspen Well, n of Hwy 44, on the nw edge of Harvey Valley) 1725 Comment
  SBBG58593  Swertia albicaulis var. nitida S. W. Hutchinson -Jun-1925 369 Lassen Eagle Lake 1554 Comment
  UC477492 Image available Swertia albicaulis var. nitida A. G. Brenneis 1928-5-29 6 Lassen 1 to 1.5 mi se Willow Sprgs.; Lassen Forest; Lassen Forest, Lassen Co. 1371 Comment
  JEPS123497  Symphoricarpos longiflorus Wilson Collison, Jaileen Merced 2015-8-8 CA 320 -143 Lassen To Highway 139 W (North) from Termo - Grasshopper Road continue 4.5 mi (1 mile after entering forest). Turn right on to Grand Road (37N29). Continue uphill (East), right at 1st fork, straight at 2nd. Comment
  UC1192207  Symphyotrichum ascendens Verne Grant and Irving Schneider 1947-9-6 8391 Lassen near, (w of Fleming Ranch Headquarters) Wendel Comment
  UC1949147  Symphyotrichum ascendens Barbara Ertter 1987-7-24 7299 Lassen ca 3/4 mi ENE of Beckwourth Pass Comment
  CHSC118847  Symphyotrichum bracteolatum L. P. Janeway 2015-8-10 11830 Lassen Warner Mountains. Steep west-facing slope above the 64 Road (39N01 - the road to Patterson Campground), 0.2 km north-northeast of crossing of East Creek; between Peterson Meadow and Long Valley. 2047 Comment
  JEPS103196  Symphyotrichum bracteolatum G. Schoolcraft 1996-9-9 2585 Lassen Lower end of Willow Creek below petroglyphs 1310 Comment
  UC762726  Symphyotrichum frondosum R. F. Hoover 1940-10-1 4660 Lassen near, between Janesville and Standish Honey Lake Comment
  UC1924205  Symphyotrichum spathulatum Debra Valov 2005-8-20 2005219 Lassen Bieber; off County A2 c. 8 km east of Hwy 299 1271 Comment
  UCD136663  Symphyotrichum spathulatum var. yosemitanum Barbara L. Wilson; R. Brainerd, D. Lytjen, et al. 2004-8-24 11184 Lassen Snowstorm Creek, at a spring; upstream of Biscar Reservoir, west of an old railroad right of way. 1463 Comment
  RSA324710  Taeniatherum caput-medusae A. Tiehm, James Young, Raymond Evans 1984-6-7 8597 Lassen Flats on the northwest side of Shaffer Mountain, 9 air miles north-northwest of Litchfield. 1387 Comment
  CHSC108012  Taraxacum officinale Lowell Ahart; John Dittes 2011-6-20 17490 Lassen About 30 yards east of the stream, about 40 yards south of where the road crosses Hunsinger Draw, 1.9 miles (air) northwest of Moll Reservoir, 2.8 miles (air) west of Ash Valley, 8.4 miles (air) southeast of Adin. 1520 Comment
  CHSC23557  Taraxacum officinale W. O. Baum 1971-6-6 33 Lassen E slope of Gallatin Peak in fire trail. 1920 Comment
  CHSC5219  Taraxacum officinale J. Wolf 1946-6-23 Lassen Pine Creek Slough, Eagle Lake. 1584 Comment
  UC1136807  Taraxacum officinale L. R. Short and W. McNulty 1936-6-17 Lassen Burgess Spr. Exp. Range Lassen Forest 1795 Comment
  UC36609  Taraxacum officinale J. Burtt Davy