Search Results — 2000 specimen records retrieved (1586 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC84132  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the west side of an irrigation ditch, on the east side of Upper Palermo Road, about 2 miles (air) northeast of Palermo. 67 Comment
  CAS-BOT-BC330563  Acer circinatum Rimo Bacigalupi 1934-9-2 2326 Butte W fork of Campbell Creek along Chic-Butte Meadows Road, 9 mi SW of Butte Meadows 914 Comment
  UC525805  Acer circinatum Rimo Bacigalupi 1934-9-2 2326 Butte 9 mi sw Butte Meadows (West Fork of Campbell Creek along Chico-Butte Meadows road); West Fork of Campbell Creek 914 Comment
  CHSC117394  Acer circinatum Steve Edwards 1992-5-17 Butte Vilas Road, 0.9 miles from its junction with Cohasset Road. Comment
  CHSC26837  Acer glabrum var. torreyi M. S. Taylor 1978-6-24 1649 Butte Humboldt Summit, Butte Co and Tehama Co. line. 2133 Comment
  CAS-BOT-BC331605  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canon of Big Chico creek along the stream. Comment
  POM85245  Acer macrophyllum C. C. Bruce 1897-04 1790 Butte Little Chico. Comment
  OBI69216  Acer negundo Kari Fisher 2000-11-10 47 Butte Chico State Campus, along Big Chico Crk 79 Comment
  CHSC3356  Acer truncatum Robert L. Smith 1966-4-6 57 Butte U. S. Plant Introduction Station 5 miles SE of Chico, Calif. Comment
  JEPS117291  Achillea millefolium Lowell Ahart 2010-9-21 17216 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air)northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  POM289124  Achillea millefolium Lyman Benson 1932-7-28 3961 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC41351  Achnatherum lemmonii R. A. Schlising; R. Banchero 1980-7-7 3861 Butte E part of country, NE of village of Feather Falls. 1280 Comment
  CHSC11972  Achnatherum lettermanii E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CAS-BOT-BC217018  Achnatherum occidentale V. Oswald; L. Ahart 1988-7-13 s.n. Butte S side of road to High Lakes, E of Philbrook Reservoir 1859 Comment
  CAS-BOT-BC218046  Achnatherum stillmanii Lowell Ahart 1980-9-10 2626 Butte Little Bald Rock 1100 Comment
  RSA715536  Achnatherum stillmanii L. P. Janeway, B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  CHSC101974  Achyrachaena mollis John P. McKeon 1980-4-22 9 Butte Ca. 30 m S of Jct of Hwy 99 and Cana Hwy 10 m W of Hwy 99, 19 km NW of Chico. 70 Comment
  CHSC65985  Achyrachaena mollis Vernon H. Oswald 1996-5-9 7546 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. In the S paddock of Tract 7, Sanctuary II (formerly irrigated pasture). 32 Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC78384  Acmispon americanus var. americanus Lowell Ahart 2000-7-18 8600 Butte Near a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC94785  Acmispon americanus var. americanus Lowell Ahart 2006-10-8 13441 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC30730  Acmispon argophyllus var. fremontii M. S. Taylor 1980-5-27 2665 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC31097  Acmispon brachycarpus Diane M. Reilly 1980-4-19 19 Butte Ca. 2 m n off Big Bend Rd. on Pulga Rd, ca. 3 m off Hwy 70 ca. 25 mi e of Chico. 597 Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  CHSC69113  Aconitum columbianum Lowell Ahart 1997-8-1 7768 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC53695  Actaea rubra Kirsten Tarp 1982-6-27 191 Butte S of Sly Creek Reservoir; near stream. 1097 Comment
  CAS-BOT-BC65556  Adiantum capillus-veneris M. S. Taylor 1979-5-4 1983 Butte Millsap Bar campground, ca. 9 mi ne of jct of Millsap Bar Rd with Brush Creek Rd, ca. 26 mi ne of Oroville 1005 Comment
  SFV82  Adiantum jordanii M. L. Vincent 1961-3-30 25 Butte Honeyrun Road, 0.5 miles west of Paradise. Near spring. 610 Comment
  SEINET10529855  Adiantum jordanii Mary Susan Taylor 1980-4-1 Taylor 2422 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  UCR248229  Aegilops triuncialis D. B. Joley 1972-5-24 s.n. Butte Hwy 32, c 2 mi south of Forest Ranch, c. 12 mi north of Chico Comment
  CAS-BOT-BC202591  Aesculus californica Lowell Ahart 1983-6-26 4112 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC115426  Aesculus californica Ariana Gehrig 2013-5-2 Butte City of Chico. Big Chico Creek at Rio C hico Way. 64 Comment
  CHSC678  Aesculus californica A. Goekler 1928-5-25 Butte Bidwell Park, Chico. 152 Comment
  CHSC50541  Agoseris aurantiaca Vernon Oswald 1990-7-3 4344 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CAS-BOT-BC29617  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows 1402 Comment
  CHSC40548  Agoseris heterophylla Ahart-Jokerst 1985-3-24 4866 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  UC1137063  Agrostis August L. Hormay 1929-8-10 Butte near Graham Mine; Philbrook Comment
  CAS-BOT-BC127336  Agrostis exarata John Thomas Howell 1955-6-15 30474 Butte Paradise. 518 Comment
  CHSC34060  Agrostis gigantea L. Ahart; M. S. Taylor, J. T. Howell 1981-8-15 3045 Butte N end of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  UC1260480  Agrostis hendersonii Lowell Ahart with Sue Taylor, Jim Jokerst, et al. 1980-7-20 2473 Butte ne of Oroville (w side of Big Bald Rock); Big Bald Rock 1100 Comment
  JEPS122225  Agrostis microphylla Lowell Ahart 2014-4-20 19383 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC392237  Agrostis scabra E. B. Copeland Jul 1929 Butte Jonesville 1550 Comment
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC41140  Aira caryophyllea R. L. Ondricek-Fallscheer 1982-3-22 132 Butte Along Hwy 149, ca. 1 mi e of jct. of Hwy 99 and Hwy149; ca. 11 mi se of Chico (Hwy 32). 60 Comment
  CHSC94791  Alisma triviale Lowell Ahart 2006-10-8 13437 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  SEINET10471917  Allium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5512 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  UC1339532  Allium amplectens S. W. Hutchinson 1933-4-28 5575 Butte near Chico 58 Comment
  CAS-BOT-BC460738  Allium amplectens A. A. Heller 1914-4-16 11299 Butte Chico-Centerville road, 2 miles from Chico. Comment
  CAS-BOT-BC460740  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  UCD138478  Allium amplectens Eric D. Osman 1978-4-22 3 Butte ca. 5 miles ENE of Chico and 50 feet south of Hwy 32 and Humbolt Road junction. 243 Comment
  CAS-BOT-BC465441  Allium campanulatum Lowell Ahart 1989-5-29 6319 Butte Along the dirt road just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  SEINET10971416  Allium cratericola Mary Susan Taylor 1980-4-21 Taylor 2563 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  RSA0118750  Allium hyalinum L. P. Janeway 2015-3-23 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CHSC75936  Allium jepsonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Incomplete Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  SEINET10872298  Allium membranaceum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4698 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  JEPS97586  Allium peninsulare R. D. Stone and W. B. Davilla 1984-4-20 591 Butte Canyon of North Fork Feather River Pulga (above intersection of CA Hwy. 70 and Camp Creek (Pulga) RD.; ca. 0.75 mi SSW of) 487 Comment
  CHSC38762  Allium peninsulare var. peninsulare Vernon Oswald 1983-4-25 386 Butte Upper Bidwell Park, Chico, on the north rim ca 0.4 mi w of the power lines. 182 Comment
  POM169679  Allium peninsulare var. peninsulare A. A. Heller 1902-5-13 5538 Butte Grade between Clear Creek and Paradise Comment
  UC843417  Allium platycaule A. A. Heller 1915-6-16 12024 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  CHSC39056  Allium sanbornii var. sanbornii R. A. Schlising 1983-8-6 4432 Butte NE of Oroville and S of Brush Creek; E of Little Bald Rock. 1030 Comment
  CHSC34996  Allophyllum divaricatum R. Schlising; R. Banchero 1981-6-16 4085 Butte N of Cohasset. 1097 Comment
  CHSC35099  Allophyllum divaricatum R. A. Schlising; J. D. Jokerst 1980-7-2 3808 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road. 902 Comment
  CHSC84168  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  SEINET10969174  Allophyllum gilioides Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4163 Butte T21N R6E ne sec 29. Along sides of Bean Creek Rd, ca. 0.5 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CDA40009  Allophyllum integrifolium T. C. Fuller 1962-7-12 9186 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC65329  Alnus incana subsp. tenuifolia Lowell Ahart 1995-10-3 7676 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC93984  Alnus incana subsp. tenuifolia R. D. Fischer 2004-6-20 763 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. At south end of pond. 1371 Comment
  SEINET269930  Alnus rhombifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows 1219 Comment
  CDA34706  Alopecurus saccatus L. Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  SEINET10507155  Alopecurus saccatus Lowell Ahart 1991-5-16 Ahart 6654 Butte On the bottom of a small shallow vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  CHSC46329  Amaranthus albus Lowell Ahart 1989-5-23 6258 Butte About 1 mile north-west of Bangor, along the edges of Avocado Road, about 1/2 west of the Oroville Bangor Highway. 213 Comment
  CHSC47964  Amaranthus deflexus Vernon Oswald 1983-10-10 1062 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. The Indian Fishery at the jct. Of W. Sacramento Ave and River Rd. Comment
  JEPS106013  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico 57 Comment
  CHSC94855  Amaranthus hybridus Lowell Ahart 2006-9-28 13366 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  UCD105585  Amaranthus retroflexus L. Ahart 1982-10-11 3850 Butte N of check-in station, Graylodge Wildlife Refuge, ca. 12 miles sw of Gridley. 35 Comment
  CDA3284  Amaranthus rudis L. Ahart 1999-9-21 8266 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC105790  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  JEPS115265  Ambrosia psilostachya Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET10904067  Amelanchier pallida Mary Susan Taylor 1981-5-13 Taylor 3698 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC45748  Ammannia coccinea L. P. Janeway 1988-6-29 2902 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi S of the Skyway, 2.9 mi E of the Butte Cr bridge. 170 Comment
  RSA0106528  Ammannia coccinea Lowell Ahart 2014-9-23 19867 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  SBBG119944  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yards E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CHSC42114  Ammannia robusta Lowell Ahart 1986-11-14 5476 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  UC726069  Amsinckia eastwoodiae A. A. Heller 1941-3-16 15888 Butte near Pentz (along grain field near the junction of the Cherokee Road with Paradise-Stirling City Road, opposite Cattle Corral) Comment
  CHSC101256  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC103690  Amsinckia intermedia Lowell Ahart 2010-4-30 16600 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  JEPS107293  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET12479910  Amsinckia intermedia M. J. Williams 1967-4-15 s.n. Butte Near Pentz. 457 Comment
  JEPS87496  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  SEINET3449092  Amsinckia lycopsoides Unknown 2003-4-10 10064 Butte Oroville, Oroville, about 2.5 air miles north, east rim of south Table Mountain 330 Comment
  JEPS93817  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET10940260  Anagallis arvensis Mary Susan Taylor 1982-4-28 Taylor 4362 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  CDA31535  Andropogon virginicus var. virginicus L. Ahart 2000-9-27 8693 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  CHSC98905  Andropogon virginicus var. virginicus L. P. Janeway 2007-12-17 9225 Butte Northern Sierra Nevada Foothills. Along the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68m elevation level), about 370 m north the railroad bridge. 69 Comment
  JEPS98544  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC44163  Anemone occidentalis V. Oswald; L. Ahart 1988-7-29 3644 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  UC426922  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville 1650 Comment
  CHSC43624  Anisocarpus madioides Vernon Oswald 1985-5-20 1771 Butte Forbestown Rd. 0.5 mi ne of Robinson Mill Rd. Along the edge of the road. 853 Comment
  CHSC84922  Anthoxanthum odoratum L. P. Janeway 2003-7-13 7901 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  SEINET10511717  Anthoxanthum odoratum Vernon H. Oswald, Lowell Ahart 1988-6-17 Oswald 3402 Butte Pinkard Creek ca. 1.5 mi N of Lost Creek Reservoir. 1067 Comment
  SEINET10547818  Antirrhinum cornutum Mary Susan Taylor 1980-7-6 Taylor 3050 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC71263  Antirrhinum leptaleum Lowell Ahart 1998-7-1 8032 Butte 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC97399  Antirrhinum vexillo-calyculatum subsp. intermedium Robert Fischer 2006-6-27 1005 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC61215  Aphanes occidentalis Vernon H. Oswald; Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC12926  Aphyllon epigalium subsp. epigalium K. D. Cox 1974-6-16 190 Butte Vilas Rd., 5.4 mi. S of Cohasset rd. N. of Chico. Comment
  CHSC1172  Aphyllon purpureum R. Carter 1964-4-21 73 Butte Feather R. Canyon, ca. 200 yds. E of Hibbard Cr. on S side of Hwy. 40A. 609 Comment
  CHSC37343  Aphyllon purpureum B. Castro 1982-4-14 15 Butte On rock outcrop in streambank at south end of North Table Mtn, off Cherokee rd ca 4 mi n of Oroville. 152 Comment
  CHSC47451  Aphyllon purpureum Lowell Ahart 1974-3-18 332 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC45020  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-21 220 Butte N part of county, near Philbrook Resevoir. 1706 Comment
  JEPS124181  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  SEINET10454400  Aralia californica Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4214 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC45038  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte Host trees were on both sides of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 air miles south-west of Bald Mountain. 1005 Comment
  CAS-BOT-BC407773  Arceuthobium californicum Lowell Ahart 1988-9-4 6173 Butte dirt road, S of a branch of Last Chance Creek, about 1.5 miles SW of Bald Mountain 1005 Comment
  UC600690  Arceuthobium campylopodum E. B. Copeland July 1929 Butte Jonesville 487 Comment
  UCD52114  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51111 Butte Skyway and Wagstaff Road; Paradise; transition zone. 609 Comment
  UCD52243  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51563 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38871  Arctostaphylos manzanita subsp. manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51541 Butte In foothill woodland south of Chrokee on road to Oregon City. Comment
  JEPS119834  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SBBG28822  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Humboldt Grade, about 12 mi from Chico Comment
  RSA31987  Arctostaphylos mewukka A. A. Heller 1942-1-4 16348 Butte Neal Road west of Optimo Lodge. Comment
  RSA32000  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  SJSU9930  Arctostaphylos mewukka G. L. Baker 1968-5-5 72 Butte Paradise 609 Comment
  UC726568  Arctostaphylos mewukka A. A. Heller 1940-2-24 15506 Butte a half mi w Ten Mile House (e of Chico) Comment
  CAS-BOT-BC38568  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15489 Butte Neal Road, Paradise at the Game Refuge above Bowle's Mansion. Comment
  UC426930  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte above Jonesville (on high ridges) 2050 Comment
  UC478486  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte ridge e the Summit; Jonesville 2100 Comment
  CHSC21281  Arctostaphylos patula M. S. Taylor 1974-3-3 71 Butte 13 mi E of Chico, on N side of the Skyway. 548 Comment
  UCD51937  Arctostaphylos truei John Thomas Howell 1975-6-15 51102 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD51950  Arctostaphylos truei John Thomas Howell 1975-6-15 51093 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  UCD52201  Arctostaphylos viscida John Thomas Howell; Gordon H. True 1967-5-9 42236 Butte Serpentine canyonside on northwest side of Feather River Canyon near Pulga Bridge, Butte County. Comment
  CAS-BOT-BC44589  Arctostaphylos viscida subsp. mariposa Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 35 Butte 2 mi. N of Paradise off Skyway Blvd., 0.2 mi. N on Coutolene Rd. 701 Comment
  CHSC31693  Arctostaphylos viscida subsp. viscida L. Ahart 1976-2-15 1009 Butte Ahart Ranch. Along North Honcut Creek on dry rocky soil. Peter Ahart Ranch, Honcut. 53 Comment
  JEPS38758  Arctostaphylos viscida subsp. viscida unknown 1914-2-22 Butte Oroville Comment
  CAS-BOT-BC137551  Aristida oligantha Lowell Ahart 1976-12-29 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CAS-BOT-BC137555  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico. Comment
  RSA0118714  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km. 77 Comment
  SEINET10512686  Aristida oligantha Edwin B. Copel 1903-7-27 Copeland 3488 Butte Chico. on bank of sloughs. Comment
  HSC65302  Aristolochia californica J. P. Smith 1973-3-22 5917 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  POM195762  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  CHSC31588  Artemisia douglasiana L. Ahart 1977-9-20 1583 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  RSA417265  Artemisia douglasiana H. F. Copeland 1927-9-3 1114 Butte Jonesville. 1524 Comment
  SEINET10872090  Artemisia douglasiana Mary Susan Taylor 1977-10-10 Taylor 1522 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CHSC47042  Asarum lemmonii R. A. Schlising; F. J. Fuller 1986-7-18 4489 Butte NE of village of Feather Falls, along road to Fall River Campground. 1066 Comment
  HSC73112  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Crossing 20N15 Lumpkin Ridge Rd., 1.9 mi. W of Golden Trout Crossing on S Fork Feather River 5 air mi. E of Feather Falls 1098 Comment
  CHSC37272  Asclepias cordifolia L. Ahart 1982-6-15 3580 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  SEINET10862406  Asclepias cordifolia R. M. Austin Austin 869 Butte Iron Canyon Comment
  UCD121302  Asclepias eriocarpa E. M. Johnston 1915-8-1 78 J Butte Biggs. Comment
  HSC100821  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 Butte Near drainage below dam, ~100 yd. W of the table at the old homestead and SW of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. SW of intersection of Hwy. 32 and Ten Mile House Rd., 10 mi. NE of Chico. 240 Comment
  SBBG128023  Asclepias fascicularis L. Ahart 2011-8-17 17629 Butte ca. 100 yards W of the table at the old homestead and SW of Ten Mi House Rd, upper Bidwell Park, ca. 0.75 mi (air) SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 239 Comment
  CAS-BOT-BC68878  Aspidotis californica M. S. Taylor 1980-2-17 2356 Butte Ca. 1/4 mi. SW of lower Forbestown Rd, ca. 3 mi. W of Forbestown. 396 Comment
  CHSC24899  Aspidotis densa P. Laherty 1976-4-4 19 Butte Scattered on the n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC32687  Aspidotis densa M. S. Taylor 1981-3-18 3417 Butte N side of Pulga Rd at jct with Hwy 70 Pulga bridge. 487 Comment
  CHSC32688  Aspidotis densa M. S. Taylor 1981-3-18 3423 Butte W side of West Branch Feather River, ca. 100 ft s of Ponderosa Way bridge crossing, ca 1 mi ne of Magalia. 487 Comment
  SDSU6340  Aster oregonensis subsp. californicus D. F. Howe 1960-9-20 2986 Butte North fork of Feather River, 28 miles from Oroville. 518 Comment
  SEINET10904920  Aster oregonensis subsp. californicus Mary Susan Taylor 1977-8-17 Taylor 1502 Butte On E side of the Skyway, at Inskip. 1615 Comment
  CHSC827  Astragalus gambelianus L. Nelson 1935-5-7 Butte Covered Bridge on Butte Creek. 108 Comment
  CDA26731  Astragalus pauperculus T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  JEPS110234  Athyrium filix-femina var. cyclosorum Lowell Ahart 2006-9-11 13271 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UC1594560  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte about 1/6 mi e of Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  CHSC34171  Atriplex heterosperma L. Ahart 1981-9-10 3149 Butte Along the edge of ditch near entrance to Graylodge Waterfowl Mgmt HQ w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC176604  Atriplex serenana var. serenana Lowell Ahart 1981-7-26 3007 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  CAS-BOT-BC146178  Avena barbata Ahart; Jokerst 1985-3-24 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CAS-BOT-BC145880  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  JEPS94141  Avena fatua Lowell Ahart 1998-6-9 7985 Butte ca. 7 mi. (air) n. Oroville (on e. side of Cherokee Rd., across the rd. from the cow chute, North Table Mt.); North Table Mt. 403 Comment
  UC577598  Avena fatua C. G. Albertus 1933-6-6 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  SEINET10514116  Avena sativa Lowell Ahart 1977-5-17 Ahart 1367 Butte Peter Ahart Ranch, Honcut. On dry gravelly soil in one of the farmed fields. Valley Grassland. 50 Comment
  CHSC116021  Azolla filiculoides Lowell Ahart 2015-10-20 20570 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  UCSB61658  Azolla filiculoides Ahart, Lowell 1990-5-20 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville 30 Comment
  SEINET10530429  Azolla mexicana Mary Susan Taylor 1982-4-28 Taylor 4370 Butte T17N R1E se/sw sec 14. Pennington quad. Aquatic in slough, ca. 1/2 mi s of HQ on Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS120948  Azolla microphylla Lowell Ahart 2013-4-20 18550 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC43270  Baccharis douglasii Lowell Ahart 1987-8-30 5871 Butte Near Highway 70, about 1/4 mile south of Clark Road (191), about 1/2 mile northeast of Oroville Chico Highway (149). 91 Comment
  CDA20248  Bacopa eisenii G. D. Barbe 1984-8-25 4191 Butte Sacramento Valley; Biggs Rice Experiment Station, N of Biggs. 0 Comment
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Dec 5 2007
  RSA758832  Bacopa eisenii Peter Fritsch, Boni Cruz 2005-8-9 1789 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 Comment
  CHSC83883  Balsamorhiza deltoidea Lowell Ahart 2003-4-10 10076 Butte On the east rim of South Table Mountain, below the basalt cliffs, about 2 1/2 miles (air) north of Oroville. 309 Comment
  SFV3762  Balsamorhiza sagittata M. L. Vincent 1962-4-20 218 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  CAS-BOT-BC16576  Barbarea orthoceras H. F. Copeland 1920-7-11 57 Butte Scotch John Meadows. 1828 Comment
  CHSC36682  Barbarea orthoceras R. E. Preston 1982-7-16 341 Butte Near stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  SBBG17205  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte 0.5 mi W of Harrison Rd in open woods Comment
  UC1562366  Bergia texana Lowell Ahart 1990-8-15 6578 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. Comment
  HSC93350  Bergia texana L. Ahart 1995-7-15 7594 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC39407  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  CHSC76266  Bidens frondosa Lowell Ahart 1999-9-21 8262 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCD129573  Bidens frondosa E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  JEPS120856  Bidens tripartita Lowell Ahart 2013-6-18 18802 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  CHSC100915  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1998-7-16 4609 Butte Northern Butte County, south of Humbug Summit, at upper reaches of Willow Creek. 1950 Comment
  CHSC87211  Blennosperma nanum var. nanum Lowell Ahart 2004-4-1 10706 Butte On the margins of vernal pools, on the north side of Nelson Avenue, about 45 yards west of the intersection of 20th Street and Nelson Avenue, Thermalito. 53 Comment
  CHSC43458  Boechera arcuata Lowell Ahart 1978-4-19 1650 Butte At the overlook at Feather Falls, about 6 miles north of the town of Feather Falls. 548 Comment
  SEINET10939932  Boisduvalia densiflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4120 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  RSA34062  Boisduvalia stricta A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  RSA0101688  Botrychium simplex var. simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  CHSC43058  Boykinia major L. P. Janeway 1987-6-26 2321 Butte SW end of Logue Meadows. 1325 Comment
  RSA0036437  Brachypodium distachyon L. P. Janeway 2012-4-29 10806 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, upper slope overlooking Big Chico Creek from the south; about 1.8 km east of the powerlines. 183 Comment
  CHSC110131  Brassica rapa L. P. Janeway 2012-4-3 10804 Butte Sacramento Valley. Along old rock wall on south side of Hum-boldt Road 0.3 km east of Bruce Road, across from rehabbed and covered area of old dump site. 86 Comment
  CHSC38038  Brassica rapa R. E. Preston 1982-12-4 368 Butte In a field; n side of River Rd at bend at Bremner Ranch, ca. 7 mi sw of Chico. 33 Comment
  JEPS122190  Brassica rapa Lowell Ahart 2014-4-16 19359 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  RSA0060844  Brickellia californica Lowell A. Ahart 2012-10-20 18496 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC41920  Brickellia greenei Lowell Ahart 1983-8-16 4281 Butte Along Humboldt Road, Butte Meadows. About 3 miles southwest of Butte Meadows. 1450 Comment
  CHSC45643  Brickellia greenei Vernon H. Oswald 1983-8-24 1019 Butte Humboldt Rd. between Lomo and Butte Meadows, 3.3 mi NE of its jct. with Calif. Hwy 32. 1402 Comment
  CHSC81589  Briza maxima D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  SEINET10835829  Briza media Edwin B. Copel 1903-5-15 Copeland 3049 Butte Chico. Comment
  SEINET10472611  Brodiaea californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4081 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC482210  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  RSA125999  Brodiaea coronaria subsp. coronaria E. K. Balls 1957-5-23 22533 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  SEINET10905137  Brodiaea hyacinthina Mary Susan Taylor 1973-1 Taylor 11 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  CHSC71203  Brodiaea minor Lowell Ahart 1988-6-9 7983 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET223331  Brodiaea minor Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3270 Butte Peter Ahart Ranch about 2.5 miles north-northeast of Honcut between Oroville and Marysville 30 Comment
  UCD77176  Brodiaea minor Robert E. Preston 2002-6-28 1893 Butte Forbestown. 832 Comment
  CAS-BOT-BC484375  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills 304 Comment
  UC635225  Brodiaea nana Herbert L. Mason 1927-5-9 3709 Butte 12 mi W of Oroville, flats of the Sacramento Valley Comment
  SEINET10833791  Brodiaea purdyi A. Arthur Heller 1941-5-24 Heller 16151 Butte Rather plentiful in thin clay soil overlying flat volcanic rocks on the Clark Road, 2 miles below Paradise Oak Belt of the Upper Sonoran Life Zone. Comment
  UCD78198  Brodiaea sierrae R. E. Preston 2002-6-7 1810 Butte Ca. 0.8 mi s of Jarbo Gap, along Hwy 70. 650 Comment
  CAS-BOT-BC486481  Brodiaea sierrae John Thomas Howell 1951-6-26 27512 Butte Feather River Canyon 213 Comment
  CAS-BOT-BC486485  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET3921419  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville.; 0 37 Comment
  CHSC38793  Bromus carinatus Vernon Oswald 1983-5-11 471 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the s edge of the Golf Course. 97 Comment
  RSA718343  Bromus carinatus L. Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardes Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  SEINET10967307  Bromus carinatus M. E. Banning 1969-7-3 Banning 10 Butte Across from Chico Jr. Hi, on S. side of Memorial Way Chico. 61 Comment
  CHSC34209  Bromus carinatus var. marginatus J. D. Jokerst 1981-8-1 1452 Butte N face of Humboldt Peak ca 200 feet NE of summit. Extreme N corner of Butte county. 2133 Comment
  CAS-BOT-BC156028  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles north of Oroville. Comment
  CHSC101801  Bromus diandrus Lowell Ahart 2009-5-8 15667 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  UCD59475  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles N of Oroville. Comment
  CHSC44452  Bromus japonicus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  CAS-BOT-BC162461  Bromus laevipes John Thomas Howell; Gordon H. True 1967-6-11 42565 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. 426 Comment
  CHSC49522  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-29 1727 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  SEINET3412001 Image available Bromus madritensis subsp. rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  SEINET10524513  Bromus marginatus A. Arthur Heller 1917-7-26 Heller 12832 Butte Open places in the yellow pine forest. Butte Meadows, Douglas fir and incense cedar are also plentiful. Comment
  CHSC38065  Bromus orcuttianus R. E. Preston 1982-6-23 310 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC95033  Bromus orcuttianus L. P. Janeway 2006-7-9 8808 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  JEPS106240  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  UC600592  Bromus orcuttianus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  SEINET10966940  Bromus orcuttianus Mary Susan Taylor 1978-7-18 Taylor 1674 Butte On W side of Hwy. 32 on edge of Yellow Pine Froest, in dry open area, ca. 1/4 mile N of Forest Ranch. 718 Comment
  CDA13291  Bromus suksdorfii G. F. Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC36535  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC9482  Bromus tectorum Harley J. Parmenter 1969-3-4 22 Butte 40 yds. s of Richardson Spring Road, 5 yds e of Cohasset Road. 97 Comment
  SEINET10524080  Bromus vulgaris Edwin B. Copel 1929-7-22 Copeland 336 Butte Jonesville. In brush and low woods. 1500 Comment
  CHSC61340  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte About 2 1/2 mi NE of Bald Mountain, about 6 1/2 mi NE of Stirling City. 1584 Comment
  JEPS95148  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  SEINET10457150  Callitriche heterophylla Mary Susan Taylor 1975-4-26 Taylor 529 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC42727  Callitriche heterophylla var. bolanderi Lowell Ahart 1987-5-27 5693 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC77983  Callitriche trochlearis Lowell Ahart 2000-5-10 8335 Butte On the bottom of a small moist (seepy) swale, about 100 yards south of a deep wash, 100 feet east of a dirt road, Peter Ahart ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC33953  Calocedrus decurrens M. S. Taylor 1981-8-15 4182 Butte On n side of Skyway, Inskip. 1463 Comment
  CHSC40593  Calocedrus decurrens Lowell Ahart 1985-9-18 5168 Butte About 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 914 Comment
  RSA769227  Calocedrus decurrens L. Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 270 Comment
  SEINET10531067  Calocedrus decurrens Mary Susan Taylor 1980-5-27 Taylor 2698 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC478559  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte on ridge w of North Willow Creek Jonesville 1650 Comment
  CHSC84631  Calochortus albus A. Rutherford 2002-4-27 24 Butte South Libby Road, Paradise, across the stream from Fire Station 2 in a triangular dirt field. Comment
  RSA109671  Calochortus albus C. C. Bruce 1897-05 2118 Butte Butte Creek. Comment
  SEINET10469583  Calochortus coeruleus Mary Susan Taylor 1980-4-18 Taylor 2503 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  UC600460  Calochortus leichtlinii E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creek; Jonesville 1700 Comment
  CHSC67727  Calochortus luteus James D. Jokerst; M. S. Taylor 1980-5-5 712 Butte SW of junction of Rock Creek Rd. and Cohasset Hwy. Several miles N of Chico. Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  UC143582  Calochortus luteus Mrs. R. M. Austin May 1896 26 Butte Chico Creek Comment
  CHSC95206  Calochortus monophyllus R. D. Fischer 2004-3-28 808 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail, below the Disk Golf Course, on a steep grassy hillside. 335 Comment
  POM292446  Calochortus nudus J. W. Morrison 1929-06 s.n. Butte Oroville to Quincy, Sierra Nevada mountain range, Feather River watershed 1829 Comment
  CHSC95161  Calochortus superbus R. D. Fischer 2004-4-20 803 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy 32. Collected along Guardian Trail, north of the Disk Golf Course, on a grassy hillside. 335 Comment
  CAS-BOT-BC493345  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, 335 Comment
  CHSC57548  Calochortus tolmiei Heather L. Davis 1990-4-24 56 Butte Ca. 0.7 mi ne of intersection of Coutolenc Rd. and Skyway, ca. 16 mi ne of Chico. 701 Comment
  CAS-BOT-BC273292  Calycadenia fremontii A. A. Heller 1922-8-25 13735 Butte Along the Richardson Springs road about 3 miles from Chico Comment
  UC1876194  Calycadenia fremontii Gerald D. Carr 1971-6-15 561 Butte 1.6 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  CHSC112679  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CAS-BOT-BC270009  Calycadenia multiglandulosa Lowell Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  SFV10354  Calycadenia multiglandulosa M. L. Vincent 1963-6-6 374 Butte In mountain meadow, 1 mile west from Nelson Bar Road at stream. Comment
  CAS-BOT-BC106100  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Road 335 Comment
  CHSC108165  Calycadenia oppositifolia L. P. Janeway 2011-8-17 10657 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  JEPS117929  Calycadenia oppositifolia John Dittes, Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Upper Bidwell Park road west of Parking Lot-R (approximately 6.7 air-miles northeast of Chico, 2.3 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main); Cascade Range Foothills 228 Comment
  RSA32902  Calycadenia oppositifolia A. A. Heller 1929-5-15 s.n. Butte Richardson Springs Road Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  RSA255511  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy. 99 at Durham Road, 10 miles SE of Chico Comment
  CHSC28496  Calycadenia truncata M. S. Taylor 1979-7-22 2166 Butte Pulga bridge, on N side of trail leading from NE side of Pulga bridge over Hwy 70, ca. 27 mi N of Oroville. 487 Comment
  JEPS120559  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  CAS-BOT-BC275389  Calycadenia truncata var. truncata Lowell Ahart 1980-7-4 2449 Butte Near Hurleton 600 Comment
  CAS-BOT-BC90923  Calycanthus occidentalis A. A. Heller 1915-5-17 11874 Butte Canon [Canyon] of Chico Creek 5 miles east of Chico. Comment
  CAS-BOT-BC90927  Calycanthus occidentalis John Thomas Howell 1961-9-22 36752 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. 106 Comment
  CHSC174  Calycanthus occidentalis Agnes Riker 1897-5-1 Butte Comment
  SEINET12096302  Calycanthus occidentalis M. S. Taylor, Oswald, V. 1985-1 5509 Butte Along Four Trees Road between Hwy 70 and Coyote Gap, ca 25 air mi NE of Oroville Comment
  CHSC33654  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-9-5 3155 Butte Along Skyway near De Sabla, 0.4 mi S of junction with Humbug Road leading to Nimshew. Comment
  CHSC92549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8373 Butte Northern High Sierra Nevada. Plumas National Forest; on Saw-mill Peak, 350 m east of the Lookout Tower; 2.2 km east of Magalia. 991 Comment
  CHSC82490  Calystegia occidentalis subsp. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9734 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  JEPS108793  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  CHSC443  Calystegia occidentalis subsp. occidentalis M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  UC436301  Calystegia occidentalis var. tomentella E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC44446  Camassia quamash subsp. breviflora Lowell Ahart 1988-6-15 6038 Butte Small meadow north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC48619  Camissonia contorta Vernon Oswald 1988-3-17 3259 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 54 Comment
  CHSC50051  Camissonia contorta Lowell Ahart 1990-3-28 6427 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  SEINET10939007  Campanula prenanthoides Taylor 1980-9-12 Taylor 3336 Butte West side of Highway 32, about 3 miles north of Forest Ranch, near Forest Ranch Fire Control Station, about a 5 milute walk west of the Highway on a dirt road. T23N R3E NW 1/4 Sec 21 Paradise Quad. 975 Comment
  CHSC19927  Capsella bursa-pastoris M. S. Taylor 1975-3-3 399 Butte Ca. 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 60 Comment
  CHSC82090  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, west of the Midway, about 1 mile north of Richvale. 30 Comment
  CHSC35223  Cardamine breweri M. S. Taylor; L. Ahart 1981-8-15 4192 Butte N side of Coon Hollow Rd (26N74) 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  CHSC34521  Cardamine californica var. californica R. E. Preston 1981-2-6 37 Butte At base of cliff on s side of Butte Creek canyon, at Covered Bridge, ca. 12 km e of Chico. 275 Comment
  CHSC61208  Cardamine oligosperma Vernon H. Oswald; Lowell Ahart 1993-3-24 5246 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  RSA767798  Cardamine oligosperma L. Ahart 2010-2-13 16566 Butte Parking area, Peter Ahart Ranch, abut 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  UCD114565  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte at end of Dark Canyon Road near Turnout and restroom, up from boat ramp to W Br Feather River, 3.5 miles south of Big Bend Roads junction, 5 air miles south of Jarbo Gap on Highway 70. 304 Comment
  CHSC41899  Cardamine pachystigma Lowell Ahart 1975-4-1 730 Butte Near the trail to Feather Falls, north of Feather Falls. 487 Comment
  CHSC86576  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7770 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.3 km northeast of Bloomer Hill. 293 Comment
  JEPS105650  Cardamine pachystigma L. P. Janeway, Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River 341 Comment
  CHSC31617  Carduus pycnocephalus L. Ahart 1975-6-5 785 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  JEPS117697  Carex Lowell Ahart 2010-9-21 17204 Butte Open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC113410  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC52275  Carex abrupta Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  CHSC92355  Carex abrupta Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10504 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262). (WGS 84) 1551 Comment
  UCD140080  Carex amplifolia L. P. Janeway 1988-6-16 2793 Butte West Br Butte Creek near Lomo; 0.1 mile from Humboldt Road along Cedar Loop Road. 1158 Comment
  CHSC53712  Carex angustata L. P. Janeway; C. A. Janeway 1986-8-31 1814 Butte Near the Picnic Area on the NE side of Philbrook Reservoir. Grassy meadow a little away from the lake. 1691 Comment
  UCR66607  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville at the 'Lily Pond.' 1700 Comment
  SEINET7550713 Image available Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CHSC42823  Carex aurea L. P. Janeway 1987-6-19 2242 Butte Along Barton Hill Rd towards Sly Cr Reservoir, 1.7 mi from the Challenge-LaPorte Rd and Travis Saddle. 1066 Comment
  CHSC44691  Carex aurea L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3085 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CHSC89826  Carex barbarae L. P. Janeway; B. Castro 2004-6-13 8136 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. Growing in and up out of dry shallow roadside ditch about 20 m away from small creek. 829 Comment
  HSC87065  Carex barbarae L. P. Janeway, Heidi Wienert, Scott George 1988-7-27 3092 Butte Just W of Murphy Slough and Golden State Island near the Sacramento River 38 Comment
  CAS-BOT-BC19418  Carex bolanderi Lowell Ahart 1988-7-31 6149 Butte About 4 road miles north of Stirling City. On the east side of the West Branch of the Feather River. 914 Comment
  CHSC100766  Carex bolanderi L. P. Janeway; B. Castro 2008-4-23 9354 Butte Northern Sierra Nevada Foothills. Along the northwest edge of Thermalito Diversion Pool (the former bed of the Feather River, now kept at a constant pool elevation of 69 m), 1.8 km north of Thermalito Diversion Dam; about 3 km north-northeast of Oroville. 69 Comment
  CHSC84208  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte Along a small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  SEINET7552617 Image available Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River; Arch Rock Tunnel 488 Comment
  UCR266839  Carex brainerdii Peter F. Zika 2011-7-6 25538 Butte Northern Sierra Nevada Highlands (n SNH), Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles north of dam on Lost Creek Reservoir 1040 Comment
  CHSC45047  Carex capitata Vernon Oswald 1987-5-11 2386 Butte Chico Meadows ca. 1 mi n of Butte Meadows. 1292 Comment
  CAS-BOT-BC34373  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte Meadow on south side of Butte Creek 0.5 mile west of Cherry Hill. 1402 Comment
  CHSC107578  Carex cyrtostachya Lowell Ahart 2011-8-19 17639 Butte On the north side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir dam, about 4 1/2 miles (air) north of Clipper Mills. 1266 Comment
  SEINET10785816 Image available Carex cyrtostachya Peter F. Zika 2011-7-6 Zika 25536 Butte Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH). 1040 Comment
  CHSC51509  Carex densa J. D. Jokerst 1980-4-19 620 Butte Roadside seep, side of Humbug Road 7.4 miles north of Centerville Cemetery, canyon of Butte Creek. Comment
  CHSC71195  Carex densa Lowell Ahart 1998-6-9 7989 Butte Southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC52864  Carex echinata subsp. echinata L. P. Janeway 1987-6-27 2348 Butte Meadow just E of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  JEPS113680  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  CAS-BOT-BC19996  Carex feta A. A. Heller 1913-6-4 10781 Butte Table Mountain Olive Ranch north of Oroville. Comment
  CHSC55436  Carex fracta L. P. Janeway 1991-6-8 3993 Butte Side ravine on south side of Montgomery Bar Ravine, ca 0.3 mi from Lake Oroville high water mark. 377 Comment
  JEPS121929  Carex fracta Lowell Ahart 2014-7-16 19678 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UCD140345  Carex fracta L. P. Janeway; R. A. Schlising, B. Castro, P. Broyles 1987-7-19 2502 Butte Coon Hollow, 1.0 mile SE of the Humbug Summit Road. 1661 Comment
  SEINET7559905 Image available Carex globosa John Thomas Howell 1962-6-16 37537 Butte Magalia. 732 Comment
  SEINET4292194 Image available Carex gracilior Unknown 2003-1 7829 Butte Northern High Sierra Nevada.North side of South Fork Feather River arm of Lake Oroville, 230 m north of the north end of Enterprise Bridge. Dirt roadside at intersection of Springeroad (Road X) and Feather Falls Road(Lumpkin Ridge Rd). Comment
  CAS-BOT-BC28193  Carex hirtissima James D. Jokerst 1982-6-4 1591 Butte Headwaters of Concow Creek ca 1.0 mi S of Flea Valley. 1097 Comment
  UC600696  Carex hoodii H. F. Copeland 1929-6-10 1247 Butte Jonesville Comment
  CHSC52869  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3031 Butte Large mdw at head'waters' of Willow Cr. 1935 Comment
  CAS-BOT-BC94048  Carex inversa Peter F. Zika 2010-6-22 24981 Butte Montgomery Street near First Avenue, Oroville, Janeway's station, Sacramento Valley (ScV) 40 Comment
  RSA725282  Carex jonesii L. Ahart 2006-8-15 13175 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC113458  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CHSC42690  Carex laeviculmis L. P. Janeway 1987-6-27 2342 Butte Along Little Kimshew Cr 0.7 mi north of the Concow Rd. 1508 Comment
  JEPS105281  Carex lemmonii Dean W. Taylor 1995-8-6 15394 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Sierra Nevada 1706 Comment
  JEPS116089  Carex multicaulis Lowell Ahart 2009-5-15 15709 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC44103  Carex nervina L. P. Janeway; C. A. Janeway 1986-8-31 1803 Butte Along Jones Cr at dirt rd (26N27) crossing; the rd between Humboldt and Humbug Rds; 11 mi from hwy 32 by rd. 1615 Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC42280  Carex nudata Steven Triano 1987-4-19 50 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico. Along West Branch Butte Creek. 853 Comment
  CHSC54369  Carex nudata M. Bailey 1991-3-9 551 Butte Butte College campus, s side of the East Branch of Clear Creek ca 100 yards e of sewage treatment plant. 85 Comment
  SEINET12649677 Image available Carex pendula Peter F. Zika 2010-1 24824 Butte 45 Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  UCR228226  Carex pendula Peter F. Zika 2010-5-16 24824 Butte Sacramento Valley, Janeway's station, Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico 45 Comment
  JEPS104628  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  CAS-BOT-BC118352  Carex praegracilis L. P. Janeway 1987-5-20 2056 Butte Near Gold Flat and Hodap Creek and the jct of Lunt Rd and Nelson Bar Rd. 457 Comment
  SEINET4289435 Image available Carex simulata L. Janeway, Gog, L 2008-1 3198 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CHSC33773  Carex straminiformis J. D. Jokerst; J. Donovan 1981-8-1 1448 Butte Ca 50 meters N of the summit of Humboldt Peak in area of rock outcrops, northern-most portion of Butte County. Comment
  CHSC52876  Carex subfusca L. P. Janeway 1987-5-28 2106 Butte Spring at the Soapstone Mine; near 4-Trees Rd 1.0 mi W of the Oroville-Quincy Hwy. 1493 Comment
  CDA42898  Carex texensis L. Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  CAS-BOT-BC115684  Carex texensis L. P. Janeway 1989-6-1 3270 Butte Campus of CA State Univ, Chico. Semi-natural area on N side of Big Chico Cr, 57 Comment
  CHSC45065  Carex utriculata Vernon Oswald 1983-7-6 833 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  JEPS122426  Carex xerophila Peter F. Zika with L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. Northern Sierra Nevada Highland (n SNH) Comment
  UCD140189  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada. Near summit of SSE slope above Little Butte Creek, N of Magalia. Immediately east of Holmwood Drive. 750 Comment
  CHSC770  Caryopteris incana V. Holt 1952-7-2 Butte In Mrs. Sanborn's garden, Chico. 57 Comment
  CHSC115356  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19962 Butte Cliffs, on the road cut on the south side of Pacific Heights Road, about 3 1/2 miles (air) southwest of Oroville. 47 Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  CHSC55411  Castilleja applegatei subsp. pinetorum Dennis W. Morris 1991-4-7 12 Butte 9 mi northeast of Chico at Hwy 32 and Crown Point Road; west side of Crown Point Road. 502 Comment
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  SEINET10931194  Castilleja applegatei var. fragilis Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4177 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CHSC31820  Castilleja attenuata L. Ahart 1974-4-11 375 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44359  Castilleja attenuata Lowell Ahart 1988-3-27 5945 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  UC1303176  Castilleja campestris subsp. campestris A. A. Heller 1927-4-25 14349 Butte between Oroville and Richvale (along the state highway in field near the Y) Comment
  SD234176  Castilleja exserta Virginia Pinkus Ryder 1965-4-3 363 Butte Table Mtns. 381 Comment
  CHSC29117  Castilleja lacera M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2458 Butte On n side of Swedes Flat Rd in dry open areas in Foothill Woodland, ca. 1 mi e of its jct with Oroville Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  CHSC43766  Castilleja lacera Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  JEPS119798  Castilleja lacera Lowell Ahart 2012-5-20 18100 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC73821  Castilleja lineariloba B. Castro 1998-5-11 788 Butte On W-facing roadcut slopes above the Oro-Quincy Hwy, 4 mi e of its jcn with Forbestown Rd and 1.1 rd mi E of Bidwell Bar Bridge, by Lake Oroville. 313 Comment
  CAS-BOT-BC241128  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  CDA41400  Castilleja miniata T. C. Fuller 1962-7-12 9175 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  UC1012496  Castilleja pruinosa F. W. Pennell and A. A. Heller 1940-6-5 25676 Butte above Oroville (Route 24, along Feather River); Feather River 91 Comment
  SEINET7072993  Castilleja rubicundula subsp. lithospermoides A. G. Vestal 1963-5-30 s.n. Butte About 15 miles east of Forbestown on the Forebestown Road. UTM Zone 10, 650845mE, 4376263mN. Coordinate datum: NAD27). Comment
  CHSC42854  Castilleja subinclusa Lowell Ahart 1987-5-11 5614 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC11891  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  CDA41389  Castilleja tenuis T. C. Fuller 1962-7-12 9170 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC104014  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico. 67 Comment
  CHSC77023  Catalpa speciosa L. P. Janeway; B. Castro 1999-5-20 6444 Butte Within the City of Chico, along Big Chico Creek between Esplanade and the Camillia Way Bridge. 59 Comment
  CHSC38418  Caulanthus lasiophyllus Vernon Oswald 1983-4-9 301 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 341 Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CAS-BOT-BC48812  Ceanothus cuneatus John Thomas Howell 1955-6-14 30441 Butte Magalia 731 Comment
  CAS-BOT-BC50779  Ceanothus integerrimus A. A. Heller; H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC84646  Ceanothus integerrimus Matt Quinn 2001-4-29 48 Butte In foothill of Butte County, collected near Butte Creek, approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 167 Comment
  UC1094003  Ceanothus integerrimus Lewis S. Rose 1955-6-15 55099 Butte Paradise Comment
  UCSB62944  Ceanothus integerrimus Sarr, Dan 1995-7-29 Butte 8 mi N of Forest Ranch, on Highway 32 950 Comment
  CHSC1511  Ceanothus lemmonii V. Keeler 1925-3-2 Butte Paradise. 548 Comment
  CHSC1513  Ceanothus lemmonii 1954-4-1 Butte Humbug road, 1/2 mi. below Nimshew. 762 Comment
  SEINET10493642  Ceanothus lemmonii Mary Susan Taylor 1980-5-27 Taylor 2736 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  CAS-BOT-BC83773  Ceanothus prostratus D. O. Burge 2007-5-11 921 a Butte East shore of Lake de Sabla 850 Comment
  CHSC27336  Ceanothus prostratus T. B. Devine 1977-6-5 412 Butte Ca 1 mi n of De Sabla. 853 Comment
  RSA300948  Ceanothus prostratus D. C. Michener 1982-7-28 4140 Butte Along 32, 3.5 miles NE of Forest Ranch (at Nopel road), Yellow pine forest Comment
  CHSC100470  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15425 Butte On the southeast side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC111408  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18264 A Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  CAS-BOT-BC281945  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte 8 miles N of Oroville Comment
  CHSC52333  Centaurea calcitrapa J. D. Jokerst 1985-6-17 2746 Butte Along creek that drains Box Hall Flat between Potters Ravine and Lake Oroville. Comment
  JEPS108984  Centaurea melitensis Lowell Ahart 2006-6-9 12659 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  SEINET3375646  Centaurea solstitialis C. Lumer, S. Yost 2006-8-1 2454 Butte Chico, California. Near Motel 6. 91 Comment
  UCD130097  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  JEPS93837  Centaurium muehlenbergii Lowell Ahart 1998-7-1 8025 Butte about 7 air mi n of Oroville (about 100 yards s of a east west fence, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC30784  Centaurium tenuiflorum M. S. Taylor 1980-8-30 3322 A Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC78251  Centaurium tenuiflorum Lowell Ahart 2000-6-21 8496 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  SEINET10454834  Centaurium venustum Mary Susan Taylor 1980-5-15 Taylor 2632 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CAS-BOT-BC288528  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte Hills near Big Chico Creek, E of Chico Comment
  CHSC37398  Centromadia fitchii R. A. Schlising 1980-8-31 3968 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Throughout the area. Comment
  CHSC10575  Cerastium glomeratum Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  JEPS115843  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA715892  Cerastium glomeratum L. Ahart 2005-4-14 11715 -A Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC388266  Cerastium glomeratum Lowell Ahart 1980-5-4 2181 Butte Thermalito 65 Comment
  UC136899  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  SEINET12164063  Cercis occidentalis D. B. Carlson 1980-1 8 Butte N edge of Coon Ridge, ca .3km N of Skyway Rd, 4.7 km E of Chico, 2.1 km WSW of Paradise 270 Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CAS-BOT-BC137005  Cercocarpus betuloides var. betuloides A. A. Heller 1915-4-12 11808 Butte Near Cohasset Comment
  CHSC27316  Cercocarpus betuloides var. betuloides T. B. Devine 1977-7-24 435 Butte Growing beside Humbug Road, .5 mi s of Nimshew. 609 Comment
  SD8743  Chaenactis glabriuscula R. M. Austin 1883-1 Butte Comment
  POM351845  Chaenactis xantiana M. M. Boney 1897-1 1724 Butte [Unspecified] Comment
  CHSC42430  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC27194  Chamaecyparis lawsoniana P. Moyer 1971-10-8 41 Butte CSUC Campus. Front lawn Admin. Bldg. 60 Comment
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Jul 25 2018
  CAS-BOT-BC279775  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte West of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville 30 Comment
  CHSC38438  Chamaesyce glyptosperma Vernon Oswald 1983-7-3 800 Butte Upper Bidwell Park, Chico, at the Rod and Gun Club. In the parking lot. 103 Comment
  CHSC113128  Chamaesyce maculata Lowell Ahart 2013-11-18 19276 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  JEPS115727  Chamaesyce maculata Lowell Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  UC1586408  Chamaesyce nutans Vernon H. Oswald and Lowell Ahart 1991-8-28 4850 Butte 3.5 mi ne Biggs (Rice Experiment Station on the s side of Hwy 162) 30 Comment
  JEPS29838  Chamaesyce ocellata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8582 Butte 200 ft e junction of Paradise Rd and rd to Centerville 60 Comment
  CHSC113132  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-18 19275 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  JEPS120607  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  JEPS95806  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET10529956  Cheilanthes carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1927 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC110403  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18457 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  POM174392  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte Jonesville. Comment
  SD3528  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville Comment
  CAS-BOT-BC451487  Chimaphila umbellata Lowell Ahart 1989-5-29 6310 Butte S. side of gravel road to the Forbestown Reservoir, about 1 mile NE of Forbestown Rd., about 2.5 miles NE of Forbestown 822 Comment
  CHSC30089  Chlorogalum pomeridianum M. S. Taylor 1980-7-5 3053 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  POM193562  Chorizanthe membranacea C. C. Bruce 1896-05 155 Butte Iron Canyon Comment
  UC762645  Chorizanthe polygonoides var. polygonoides R. F. Hoover 1938-4-24 3241 Butte 3 mi ne Chico; n of Chico Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  CHSC48381  Chrysolepis sempervirens Vernon Oswald 1983-8-17 979 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2103 Comment
  UC1714463  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte areas about Chico meadow; Sierra 1219 Comment
  CHSC26733  Cicendia quadrangularis M. S. Taylor; M. Hayes 1978-4-14 1564 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  SEINET10474170  Cichorium intybus Mary Susan Taylor 1977-10-10 Taylor 1528 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  JEPS110390  Cinna latifolia Lowell Ahart 2006-8-15 13191 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC40774  Circaea alpina subsp. pacifica Lowell Ahart 1985-7-9 5116 Butte Along Fall River, about 100 yards south of the bridge across Fall River. about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC47051  Circaea alpina subsp. pacifica R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4650 Butte NE part of county on Snow Mountain ridge. At roadside. 1950 Comment
  CAS-BOT-BC288042  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  SEINET10866360  Cistus salviifolius Mary Susan Taylor 1975-5-6 Taylor 561 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Building; Riparian Woodland. 65 Comment
  CAS-BOT-BC163546  Clarkia arcuata Lowell Ahart 1983-6-26 4159 Butte Along Bean Creek Road, about 5 miles south of Little Bald Rock, about 17 miles north-east of Oroville 600 Comment
  CHSC62767  Clarkia concinna subsp. concinna L. P. Janeway 1993-6-16 4390 Butte Plumas National Forest. Upper east-facing slopes of North Fork Feather River canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap. Road cut-bank. 670 Comment
  CHSC96800  Clarkia concinna subsp. concinna Lowell Ahart 2007-5-22 13913 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CAS-BOT-BC165940  Clarkia gracilis Lowell Ahart 1975-5-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC27341  Clarkia gracilis subsp. albicaulis T. B. Devine 1977-6-5 413 Butte Humbug Road, 2.2 mi ne of Centerville. 457 Comment
  CHSC2466  Clarkia gracilis subsp. gracilis R. Carter 1964-6-4 108 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. on W side of driveway. 121 Comment
  CAS-BOT-BC163266  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-6-30 4176 Butte Along the road, south-east of Concow Res. 500 Comment
  CHSC37426  Clarkia mosquinii R. A. Schlising; K. Tarp, R. Banchero 1981-7-11 4134 A Butte NE of Oroville; N of the French Creek Road crossing of Peavine Creek. Roadside. 647 Comment
  CHSC89908  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-10 Butte Northern Sierra Nevada Foothills. Along roadside leading across Ponderosa Dam. 304 Comment
  SEINET10492502  Clarkia mosquinii subsp. mosquinii Lawrence P. Janeway 1991-6-1 Janeway 3978 Butte Berry Creek quad T22N, R4E, SE 1/4 of SW 1/4 of sec 35, elev. 1780 feet. West-facing rocky cut-bank of Dark Canyon Road 0.6 mile south of Big Bend Road/Parkhill. Mid-slope of canyon in mixed conifer forest. 545 Comment
  POM32285  Clarkia purpurea subsp. purpurea A. A. Heller, H. E. Brown 1902-5-6 5472 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC163639  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CAS-BOT-BC163650  Clarkia purpurea subsp. quadrivulnera Lewis S. Rose 1945-5-12 45019 Butte Richardson Springs 304 Comment
  CHSC38566  Clarkia purpurea subsp. quadrivulnera Vernon Oswald 1983-5-14 479 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 292 Comment
  CHSC46387  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-10 6224 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  CAS-BOT-BC163658  Clarkia purpurea subsp. quadrivulnera Mrs. H. C. Cantelow 1940-5-10 4032 Butte S. W. of Oroville, Hy #24 Comment
  CAS-BOT-BC172382  Clarkia purpurea subsp. viminea A. A. Heller; H. E. Brown 1902-5-6 5472 Butte Berry Canyon, near Clear Creek Comment
  CHSC59114  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill. 512 Comment
  UC1071881  Clarkia rhomboidea H. and M. Lewis 1951-5-1 824 Butte 1.65 mi s of road to Paradise (road from Oroville to Magalia) Comment
  UCD104989  Clarkia rhomboidea L. P. Janeway 1993-6-10 4378 Butte Southwest side of Watson Ridge about 1.5 miles E of Bald Rock Dome. 822 Comment
  SEINET10453166  Clarkia rhomboidea Mary Susan Taylor 1978-7-21 Taylor 1792 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  UC1562475  Claytonia lanceolata Vernon Oswald and Lowell Ahart 1990-6-20 4306 Butte s side Philbrook Creek (between Philbrook Reservoir and Carr Mine; ca 0.5 mi w of the Butte-Plumas county line) 1920 Comment
  CHSC41312  Claytonia palustris S. C. Morey 1983-7-22 548 Butte Cherry Hill Meadow On n side of Humboldt Road, ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SBBG86232  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte south bank of Jones Crk, 0.4 km E of Jonesville Hotel, Jonesville; ISOTYPE 1550 Comment
  SEINET10572695  Claytonia parviflora Mary Susan Taylor 1980-5-8 Taylor 2614 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SEINET10572701  Claytonia parviflora Mary Susan Taylor 1981-3-24 Taylor 3440 A Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC1381  Claytonia parviflora subsp. parviflora E. Dolittle 1929-3-15 Butte Bidwell Park. 60 Comment
  CHSC42410  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-6 5572 Butte On dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC1379  Claytonia perfoliata subsp. perfoliata C. Durbrow 1938-3-10 Butte W. of Chico. 51 Comment
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CAS-BOT-BC91352  Clematis lasiantha Jim Riley 1923-3-25 s.n. Butte Centerville. Comment
  CHSC101322  Clematis lasiantha Lowell Ahart 2009-4-22 15589 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SEINET5337775  Clematis lasiantha M. J. Williams 1967-4-15 s.n. Butte Near Magalis. 457 Comment
  SEINET194862  Cogswellia marginata A. A. Heller 1941-4-16 16065 Butte Along US highway 99E 4 miles north of Biggs. Comment
  CHSC1732  Collinsia heterophylla H. Summers 1929-4-24 Butte S. bank of Butte Creek, near covered bridge. 106 Comment
  RSA7435  Collinsia heterophylla J. H. Morrison 1932-05 s.n. Butte Deerhaw. Comment
  CHSC33149  Collinsia tinctoria J. D. Jokerst 1981-5-14 1322 Butte Top of North Table Mt, ca 300 M north of Cherokee Rd at the West edge of the mountain. Comment
  CHSC71192  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte About 1/4 miles north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10548312  Collinsia tinctoria Mary Susan Taylor 1981-6-19 Taylor 3959 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  SEINET10898249  Collinsia tinctoria Lowell Ahart 1985-5-15 Ahart 4977 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SBBG29150  Collomia grandiflora E. B. Copeland 1931-7-14 Butte Jonesville 1550 Comment
  UC478480  Collomia grandiflora E. B. Copeland 1930-7-16 Butte Jonesville 1600 Comment
  CHSC45309  Comandra umbellata subsp. californica Vernon Oswald 1985-4-28 1723 Butte Upper Bidwell Park, Chico, along Yahi Trail where it first parallels Chico Creek e of Parking Area R. 158 Comment
  SEINET10898570  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 Ahart 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CAS-BOT-BC286065  Conyza canadensis Lowell Ahart 1987-7-17 5836 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC286061  Conyza canadensis Lowell Ahart 1982-9-9 3770 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  UCD138901  Corallorhiza striata Kenneth D. Stewart 1965-7-15 s.n. Butte along State Highway 32, around 20 miles north of Forest Ranch. Comment
  CAS-BOT-BC237927  Cordylanthus Lowell Ahart 1980-7-29 2495 Butte Along Hurleton Swedes Flat Road 600 Comment
  SEINET10549249  Cordylanthus pilosus subsp. bolanderi Lowell Ahart 1983-8-16 Ahart 4279 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC25475  Cordylanthus pilosus subsp. hansenii L. Ahart 1977-6-16 1427 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1562383  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte 0.5 mi nw Enterprise Bridge (across Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville, Trifid Bird's Beak 274 Comment
  JEPS19733  Cordylanthus tenuis subsp. viscidus Rimo Bacigalupi with Howard Whisler 1957-7-26 6038 Butte 2.2 mi sw of and below Nimshew (along Humbug Road on the eastern canyonside of Butte Creek); Butte Creek 609 Comment
  CHSC101759  Cornus glabrata Lowell Ahart 2009-5-23 15733 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  POM77765  Cornus glabrata C. C. Bruce 1898-03 1822 Butte Little Chico Creek. Comment
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  UCD117253  Cornus nuttallii Sue Wagener 1955-5-28 78 Butte Powelton, on Diamond Match Road ca. 5 miles north of Lovelock, Stirling City area. 1127 Comment
  LA40443  Cornus sericea subsp. sericea E. B. Copeland; 1930-6-25 sn Butte Jonesville 1500.0 Comment
  SBBG25328  Cornus sessilis F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  UC1122804  Cornus sessilis R. Bacigalupi 1934-9-2 2325 Butte 10 mi. s.w. Butte Meadows (along Chico-Butte Meadows Rd., canyon of W. Fork Campbell Creek); Lassen Nat'l Forest, Chico Quad., W. Fork Campbell Creek Comment
  HSC97081  Coronilla varia L. Ahart 2006-6-24 12862 Butte On Cohasset Ridge, about 4 mi. NE of Cohasset, E side of Ponderosa Way. 1113 Comment
  RSA700215  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  UC1562379  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  POM196109  Corydalis caseana E. B. Copeland 1929-7-3 s.n. Butte Jonesville. 1500 Comment
  SEINET12091577  Corydalis caseana Unknown 1983-1 4301 Butte ca 1 mi E of Butte Meadows, T26N, R4E, NW Section 28 1450 Comment
  CHSC109097  Cotoneaster lacteus Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17854 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  CHSC101075  Cotula australis Lowell Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  JEPS104028  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CAS-BOT-BC291334  Cotula coronopifolia Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo 35 Comment
  CHSC65991  Crassula aquatica Vernon H. Oswald 1996-4-20 7405 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W end of the S paddock of Tract 7, Sanctuary II. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  JEPS103505  Crassula aquatica Lowell Ahart 2002-4-14 9480 Butte Area between the Railroad and the Midway Road, 50 yards S of Nelson Dlavo Road, in Nelson. 36 Comment
  CAS-BOT-BC427627  Crassula aquatica Lowell Ahart 1974-4-11 s.n. Butte Honcut 45 Comment
  CHSC30890  Crassula connata J. D. Jokerst 1979-4-2 1172 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  CHSC50035  Crassula connata Lowell Ahart 1990-4-8 6442 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC38402  Crassula tillaea Vernon Oswald 1983-3-14 173 Butte Upper Bidwell Park, Chico, along the hiking trail, ca. 1600 ft w of the power lines. 195 Comment
  CHSC14034  Crataegus monogyna L. W. Blaisdell 1974-4-29 10 Butte Paradise. In yard of L. W. Blaisdell. 548 Comment
  JEPS118636  Crataegus monogyna L. P. Janeway 2011-6-28 10247 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Lower Trail 46 m north of Upper Park Road and 90 m north of Big Chico Creek; 0.4 km west of Day Camp. Comment
  CHSC109531  Crepis pleurocarpa L. P. Janeway 2012-6-23 10890 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SEINET10500614  Crucianella angustifolia Mary Susan Taylor 1979-5-6 Taylor 1994 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC110331  Crypsis schoenoides B. Castro; Margie Graham 2013-8-24 1602 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal about 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC36551  Crypsis schoenoides L. Ahart 1982-7-10 3672 Butte On the bottom of a duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  HSC11252  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte Blavo, near Chico Comment
  SEINET10518393  Crypsis vaginiflora A. Arthur Heller 1914-7-31 Heller 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  SEINET12329450  Cryptantha affinis L. Ahart, Ahart, P. 1984-1 4708 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown Comment
  CHSC106884  Cryptantha flaccida Lowell Ahart 2011-5-1 17336 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  SD122568  Cryptantha flaccida Lowell Ahart 1984-6-8 4668 Butte At the Ponderosa Dam, ca. 2 miles northwest of Forbestown 370 Comment
  SD240919  Cryptantha flaccida George K Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70,near the Feather River (Palermo 7.5'Q) 46 Comment
  UC763036  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  CHSC34982  Cucurbita foetidissima R. A. Schlising 1981-9-20 4194 Butte 4.3 mi W of railroad crossing in Richvale, on Richvale West Road. Comment
  POM181962  Cupressus macnabiana J. G. Lemmon 1895-12-2 s.n. Butte Magnalia [=Magalia?] Comment
  SEINET229238  Cuscuta B. Ertter, J Strachan; L. Ahart 1980-5-8 3325 Butte Peter Ahart Ranch ca 2.5 mi NE of Honcut between Marysville & Oroville 30 Comment
  CHSC26665  Cuscuta californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1457 Butte E side of Old Humboldt Rd., ca. 4.5 mi ne of Butte Meadows turnoff from Hwy. 32. 1326 Comment
  CHSC41918  Cuscuta californica Lowell Ahart 1983-8-16 4282 Butte Along Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  CHSC55055  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  RSA718398  Cuscuta californica L. Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  CDA39931  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  SBBG120020  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte S edge of the N Fork of the Feather River, just W of Mill Crk, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 3/4 mi NE of Pulga, ca. 21 mi (air) NE of Oroville 431 Comment
  CHSC80753  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte Large vernal pool, east of the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1191662  Cuscuta obtusiflora var. glandulosa Herbert L. Mason and Verne Grant 1946-8-14 13021 Butte Sacramento Outing Club Butte Sink Comment
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Oct 6 2011
  CHSC58264  Cuscuta pentagona Lowell Ahart 1992-5-23 6772 Butte North side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC44896  Cycladenia humilis var. humilis Lowell Ahart 1988-7-31 6142 Butte On the west side of the dirt road that crosses the West Branch of the Feather River, 2 miles by road northeast of Stirling City. 975 Comment
  POM72532  Cynoglossum grande C. C. Bruce 1897-03 2092 Butte Little Chico Comment
  UC436303  Cynoglossum occidentale E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  UCD60178  Cynosurus echinatus Beecher Crampton 1965-6-17 7384 Butte 1/2 mile west Rackerby Store, La Porte Road. 426 Comment
  CHSC68378  Cyperus bipartitus L. P. Janeway; C. A. Janeway 1986-10-4 1903 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  CHSC28616  Cyperus eragrostis M. S. Taylor 1979-10-3 2223 Butte In Butte Creek Canyon, ca 1/4 mi upstream from bridge corssing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  SEINET10466872  Cyperus eragrostis Mary Susan Taylor 1979-10-3 Taylor 2223 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CHSC68390  Cyperus erythrorhizos L. P. Janeway; C. A. Janeway 1986-10-4 1907 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  UCD141001  Cyperus flavescens L. Ahart 1981-9-6 3213 Butte Arch Rock Tunnel, Feather River Highway. 500 Comment
  CHSC43783  Cyperus fuscus Vernon Oswald 1983-8-19 1005 Butte Upper Bidwell Park, Chico, 0.2 mi e of the end of the pavement on Upper Park Rd. Growing at the edge of Chico Creek. 91 Comment
  CHSC76013  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-8-13 8181 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95883  Cyperus fuscus Lowell Ahart 1999-10-3 8287 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD141197  Cyperus niger John Thomas Howell 1959-9-20 34639 Butte eastern outskirts of Oroville. 60 Comment
  SD131026  Cyperus niger Lowell Ahart 1981-9-19 3181 Butte Sierra Nevada Mountains; Arch Rock Tunnel; Highway 70. 550 Comment
  SEINET10467155  Cyperus niger var. capitatus Mary Susan Taylor 1977-8-16 Taylor 1447 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC45124  Cyperus squarrosus Vernon Oswald 1987-6-12 2987 Butte West side of Sacramento River (but technically in Butte County because of shifting channel) between Big Chico Creek and Phelan Island, ca. 0.75 mi s of Big Chico Creek. 35 Comment
  CHSC65353  Cyperus squarrosus Lowell Ahart 1995-10-3 7674 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  JEPS119891  Cyperus squarrosus Lowell Ahart 2012-6-5 18161 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC478548  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CHSC68416  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-10-12 1920 Butte North side of North Fork Feather River at Pulga. 426 Comment
  SEINET10467194  Cyperus strigosus Mary Susan Taylor 1979-10-3 Taylor 2222 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CAS-BOT-BC68045  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville - Butte Creek 1550 Comment
  CAS-BOT-BC68050  Cystopteris fragilis Lowell Ahart; Vernon Oswald 1987-8-5 3184 Butte Outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail 2072 Comment
  SEINET3166413  Cystopteris fragilis P. J. Alexander 2009-5-27 1051 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, +-200 yards south of the bridge over Frey Creek, 3.3 miles SE of Bald Rock Dome, 17.8 miles ENE of Oroville, Plumas National Forest. 613 Comment
  SEINET10899407  Cystopteris fragilis Mary Susan Taylor 1981-3-24 Taylor 3445 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CDA43421  Cytisus scoparius D. G. Kelch 2012-9-19 12 .36 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CAS-BOT-BC190482  Dactylis glomerata M. S. Taylor 1978-7-21 1815 Butte On south side of Oroville-Quincey Highway. Ca. 14 miles north of Lake Madrone. 1463 Comment
  CAS-BOT-BC190483  Dactylis glomerata John Thomas Howell 1962-6-16 37579 Butte Sierra Nevada. Pentz road 2 miles south of Magalia. 609 Comment
  CHSC2049  Damasonium californicum R. Morford 1921-4-8 Butte Dodge Lands. 30 Comment
  CDA34740  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte On the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC74039  Danthonia californica var. americana B. Castro 1998-7-8 802 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. 929 Comment
  CHSC23704  Darmera peltata M. S. Taylor 1976-5-5 1119 Butte Along Bear Creek, ca. 1/4 mi s of Hwy 70, by the waterfall, ca. 30 mi ne of Oroville. Comment
  CHSC84373  Darmera peltata Lowell Ahart 2003-8-26 10547 Butte On the bottom of the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 6 miles (air) northeast of Feather Falls. 975 Comment
  NY41067  Darmera peltata S. Bianco 1995-9-17 1027 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  CAS-BOT-BC420352  Darmera peltata Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  CHSC1460  Delphinium J. Koopman 1929-4-18 Butte Golf Course near Chico Creek. 76 Comment
  POM99886  Delphinium gracilentum C. C. Bruce 1897-05 1914 Butte Forest- Ranch. Comment
  CAS-BOT-BC8570  Delphinium hansenii John Thomas Howell 1962-6-16 37602 Butte Feather River West Branch, southwest of Nelson Bar 304 Comment
  CAS-BOT-BC8574  Delphinium hansenii Isabel McCracken 1938-5-21 s.n. Butte Marysville Buttes, east side Comment
  POM99220  Delphinium hansenii subsp. hansenii C. C. Bruce 1897-06 1917 Butte [Unspecified] Comment
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Oct 4 2007
  RSA31775  Delphinium hesperium A. A. Heller 1938-5-28 15110 Butte 2.5 miles from Oroville on the Feather River Hwy. Comment
  CHSC45418  Delphinium patens Lowell Ahart 1980-5-4 2200 Butte About 1/2 mile east of the Oak Grove Cementery, about 1 mile south-east of Hurleton. Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CAS-BOT-BC17020  Delphinium variegatum L. S. Rose 1931-4-13 s.n. Butte Oroville Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  CHSC53296  Delphinium variegatum Denise Dachner 1975-4-8 5 Butte Ca. 4 yds n of highway 32, 2 mi e of Chico. 60 Comment
  CAS-BOT-BC17018  Delphinium variegatum C. C., Mrs. Bruce 1897-5-1 1918 Butte Fields. Comment
  CHSC43133  Deschampsia cespitosa Robert Banchero 1981-7-18 596 Butte Butte Creek House, ca 3 air mi ne of Jonesville. Meadow. 1755 Comment
  UCSB63849  Deschampsia cespitosa Ahart, Lowell 1997-8-1 Butte Bottom of Little Kimshew Creek, Snow Meadow; 0.25 mi E of Table Mtn, 8 mi by air SE of Stirling Cirty 1524 Comment
  CDA31664  Deschampsia danthonioides Vernon H. Oswald & Lowell Ahart 1998-6-11 9223 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  CAS-BOT-BC201743  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. On the banks of North Honcut Creek 50 Comment
  CHSC109676  Deschampsia elongata Lowell Ahart 2012-6-21 18218 Butte On the south side of Big Chico Creek about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC41307  Deschampsia elongata S. C. Morey 1983-7-22 543 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC61655  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte Along Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  JEPS98346  Deschampsia elongata Lowell Ahart 2000-6-29 8549 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  RSA126936  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CHSC48254  Dianthus armeria subsp. armeria Vernon Oswald 1985-6-6 1816 Butte Coutolenc Rd. 0.1 mi n of the Skyway at Magalia. Roadside. 707 Comment
  UC120086  Dicentra formosa Mrs. R. M. Austin May 1889 66 Butte Comment
  UC1362263  Dicentra formosa Kingsley R. Stern 1965-4-25 2169 Butte ca 2.9 mi e (upstream) Poe Power Dam (bank of small creek flowing into n fork of Feather River); Feather River Comment
  CAS-BOT-BC402392  Dicentra formosa subsp. formosa E. K. Balls; L. W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, n. of Magalia 731 Comment
  CAS-BOT-BC209182  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1962-6-15 37510 Butte Magalia - Sierra Nevada 731 Comment
  JEPS98294  Dichanthelium acuminatum subsp. fasciculatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET10892860  Dichanthelium lanuginosum Lowell Ahart 1987-5-27 Ahart 5715 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC500060  Dichelostemma capitatum H. E. Brown 1897-5-1 s.n. Butte Near Clear Creek Comment
  SEINET10533988  Dichelostemma capitatum A. Arthur Heller 1915-3-24 Heller 11778 Butte Low grassy hlls 8 miles north of Oroville below the blue oak belt in red clay soil, where it is plentiful, associated with Lepidium, Dodecatheon and Athysanus, the first plants in bloom. Comment
  CHSC77454  Dichelostemma capitatum subsp. capitatum Laura Bogni 1997-3-25 9 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CAS-BOT-BC483253  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1980-3-22 2049 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC45017  Dichelostemma congestum E. Ray Latham 1988-4-21 Butte Large population 100m e of e end Fremont st., Chico. 30 Comment
  CAS-BOT-BC501086  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville near Table Mountain Comment
  CAS-BOT-BC501091  Dichelostemma multiflorum C. R. Quick 1941-6-8 41 -02 Butte About 2 miles south of Big Bar Mt. Comment
  CHSC2514  Dichelostemma volubile W. Fitzwater 1958-4-12 Butte Cohasset Rd., Chico area. 243 Comment
  CAS-BOT-BC502518  Dichelostemma volubile A. A. Heller; H. E. Brown 1902-5-8 5499 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC224612  Dichondra John Thomas Howell 1975-6-15 51060 Butte Chico 60 Comment
  CHSC112741  Digitaria sanguinalis Lowell Ahart 2013-11-17 19268 Butte Steep hillside, about 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  SEINET13693578  Diplacus aurantiacus W. Short 1959-4-11 15 Butte On US Hwy 40, 15 miles E of Oroville. Comment
  CHSC28641  Diplacus douglasii M. S. Taylor 1979-3-31 1973 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, se corner, ca. 22 mi n of Oroville. 198 Comment
  CHSC38698  Diplacus douglasii Vernon Oswald 1983-2-16 84 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 188 Comment
  CHSC90147  Diplacus douglasii John Copeland 1980-3-8 17 Butte About 0.7 mi southeast of Cohasset Hwy. Comment
  CAS-BOT-BC150509  Diplacus grandiflorus F. W. Pennell; A. A. Heller 1940-6-5 25677 Butte Route 24, along Feather River, above Oroville 243 Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CAS-BOT-BC153221  Diplacus kelloggii Jean L. Pawek 1956-5-21 53 Butte Alt. 40, Feather River 609 Comment
  CHSC44716  Diplacus torreyi R. Banchero 1980-6-23 260 Butte Along Eagle Gulch Rd 1.4 mi N of its jct with Laporte Rd, 2.0 mi SW of Sly Reservoir. 1059 Comment
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC47068  Disporum hookeri R. A. Schlising; Kirsten Tarp 1982-7-28 4351 Butte E of Feather River Canyon and Pulga, on Four Trees Road. 731 Comment
  CAS-BOT-BC136234  Dodecatheon alpinum H. F. Copeland 1920-8-12 120 Butte Jonesville Meadow 1219 Comment
  UC1185278  Dodecatheon clevelandii subsp. patulum H. E. Brown Apr. 1-15, 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  CHSC31413  Dodecatheon hendersonii Herb Allan McLane 1980-3-3 1 Butte Plumas National Forest, MDM, 1 mi sw of Ponderosa Dam. 402 Comment
  CHSC31805  Dodecatheon hendersonii L. Ahart 1975-3-23 716 Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek on moist to dry soil, near large rocks. 45 Comment
  CHSC54566  Dopatrium junceum Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6668 Butte On the Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. 30 Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  CDA6254  Dopatrium junceum L. L. Davis 1944-8-23 Butte Biggs Rice Field Station, Biggs. 0 Comment
  CHSC46675  Downingia bacigalupii V. Oswald; L. Ahart 1989-8-15 3943 Butte Soda Ridge Road, 1.4 mi w of its jct with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  UC220573  Downingia bicornuta var. bicornuta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2083 Butte near Chico Comment
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  CHSC4645  Downingia cuspidata R. Carter 1966-4-21 348 Butte Found ca. 5 mi. NE of Oroville on top Table Mt., growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. in dry vernal pool. 274 Comment
  RSA304469  Downingia cuspidata Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca 2 1/2 miles NNE of Honcut, between Marysville and Oroville. 30 Comment
  CHSC7081  Downingia ornatissima var. ornatissima H. Alger 1969-4-25 21 Butte 0.7 mi e of Chico, 15 yds s of Skyway. 60 Comment
  CHSC27490  Downingia pulchella M. S. Jaeckel 1974-4-23 34 Butte Found locally in muddy places and vernal pools, Chico. Comment
  SBBG69654  Downingia pulchella M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  UCD115555  Draba verna L. Ahart 1973-11-21 150 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38420  Draba verna var. aestivalis Vernon Oswald 1983-4-4 262 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  JEPS119838  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC100973  Draba verna var. verna L. P. Janeway 2008-3-18 9236 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC31648  Draba verna var. verna L. Ahart 1978-4-16 1643 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC2102  Dracunculus vulgaris M. Anthony 1954-5-14 Butte Campus near Chico Creek. Comment
  JEPS121904  Draperia systyla Lowell Ahart 2014-7-16 19671 Butte About 50 yards east of Skyway, about 1/4 mile north of Stirling City. Comment
  SEINET13709887  Draperia systyla Lowell William Ahart, Lowell William Ahart 2003-1 10376 Butte 17 Mi. NE of Oroville, 2.5 Mi. E of Brush Creek Work Ctr. (39 Deg 41'28.3"N, 121 Deg 17'29.3"W) 3400 Ft. 1036 Comment
  UC1382130  Draperia systyla L. Constance and David H. French 1968-5-2 3867 Butte Canyon of North Fork of Feather River 7.3 miles SW of Storrie Comment
  UCD124001  Drosera X obovata Barry Rice 2011-8-21 BR 110812 Butte Mallory Meadow. 1350 Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  SEINET11994763  Drosera rotundifolia L. Ahart, Ahart, P. 1984-1 4756 Butte About 1/2 mile E of Bald Mountain, about 5 mi NE of Stirling City 1750 Comment
  CAS-BOT-BC527356  Drymocallis glandulosa var. reflexa Saichi Kawahara 1968-5-4 379 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  UC648311  Drymocallis hansenii Lewis S. Rose 1939-6-6 39234 Butte Strawberry Valley 1219 Comment
  UCD80274  Dryopteris CNPS SN Foothill Team 2005-3-30 SNFN 0070 b Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  CHSC84156  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  SEINET10530144  Dryopteris arguta Mary Susan Taylor 1980-2-17 Taylor 2355 Butte T20N R6E central w border of sec 4.. On S side of Lower Forbestown Road, ca. 3 mi W of Forbestown. Yellow Pine Forest. 610 Comment
  UC123311  Dryopteris arguta Mrs. R. M. Austin May 1883 79 Butte Big Chico Comment
  CAS-BOT-BC428073  Dudleya cymosa subsp. cymosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC428072  Dudleya cymosa subsp. cymosa Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  CHSC113124  Dysphania ambrosioides Lowell Ahart 2013-11-18 19274 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC38309  Dysphania ambrosioides Vernon Oswald 1983-8-19 1011 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft. upstream of the flood-control gates. 79 Comment
  CHSC79989  Dysphania botrys L. P. Janeway; B. Castro 1999-6-4 6450 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge over the Sacramento River. 30 Comment
  CHSC2142  Echinochloa crus-galli D. Bower 1953-8-27 Butte Llano Seco. 30 Comment
  CHSC38813  Echinochloa crus-galli Vernon Oswald 1983-7-8 842 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  SEINET10831129  Echinochloa crus-galli Lowell Ahart 1977-8-14 Ahart 1554 Butte On damp soil in a small slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  SEINET10934803  Echinochloa crus-galli Mary Susan Taylor 1978-9-8 Taylor 1886 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  UCD61094  Echinochloa muricata P. B. Kennedy 1921-8-9 Butte Rice Station, Biggs. Comment
  CDA1998  Echinochloa oryzicola J. Harroun 1958-9-16 1232 -58 Butte 0 Comment
  UC1254615  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  JEPS120762  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC2198  Egeria densa V. Holt 1935-9-1 Butte Locality: Chico Creek. 56 Comment
  CHSC44295  Egeria densa V. Oswald 1988-6-8 3363 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  UCD150361  Egeria densa William Anderson 1964-8-16 s.n. Butte Gridley-Colusa Rd. and Farris Rd. Comment
  CHSC114971  Elatine Lowell Ahart 2015-3-31 19983 Butte Bottom of a large duck field, 50 yards north of Parking Lot 3, about one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6-1/2 miles (air) southwest of Gridley. 19 Comment
  JEPS122234  Elatine Lowell Ahart 2014-4-26 19411 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  JEPS123910  Elatine Lowell Ahart 2015-4-24 20074 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC113454  Elatine ambigua Lowell Ahart 2014-8-8 19696 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC78563  Eleocharis Lowell Ahart 2000-8-23 8665 Butte In a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC45129  Eleocharis bella Vernon Oswald 1987-8-10 3203 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  UC1562357  Eleocharis bella Lowell Ahart and Vern Oswald 1990-7-5 6650 b Butte 2 mi NE of Snag Lake (small meadow 1/2 mi N of Butte Creeek house) 1828 Comment
  UC1564729  Eleocharis bella V. Oswald and L. Ahart 1989-7-21 3869 Butte 1 mi W of Jonesville (confluence of Willow and Colby Creeks, on W side of Colby Creek on N side of Humboldt Road) 1487 Comment
  CHSC79601  Eleocharis bolanderi G. F. Hrusa; T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 815 Comment
  CHSC42382  Eleocharis engelmannii Lowell Ahart 1987-5-10 5607 Butte In an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC78925  Eleocharis engelmannii Lowell Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET7585972 Image available Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC113371  Eleocharis engelmannii Lowell Ahart 1987-5-10 5607 Butte 1/8 mi S of Central House Road, E of the Wester Pacific RR, ca. 1 1/2 N & 1 mi W of Honcut 30 Comment
  UCD49589  Eleocharis engelmannii E. Dean; J. DiTomaso and E. Healy 2001-8-20 863 Butte Biggs UC Field Station. North of town Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads of buildings. Along east-west running dirt road. 30 Comment
  CHSC111159  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte on the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountainl, about 6 miles (air) north of Oroville. 273 Comment
  CHSC117431  Eleocharis macrostachya Lowell Ahart 2016-5-30 20893 Butte North of Little Pump and along the north fence, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC36972  Eleocharis macrostachya M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4368 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  JEPS98355  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 Butte 5 air miles NE of Feather Falls (just W of the bridge across Fall River, N side of Fall River, 3 mi N of Lumpkin Ridge Road) 1036 Comment
  JEPS120890  Eleocharis montevidensis Lowell Ahart 2013-7-6 18837 Butte E side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile N and 2.75 miles E of Honcut, about 13 air miles SE of Oroville. Comment
  CHSC68441  Eleocharis pachycarpa L. P. Janeway 1987-6-8 2164 Butte Along French Creek Road across from the mouth of Ram Creek. 617 Comment
  CHSC102793  Eleocharis parishii Lowell Ahart 2009-6-19 15923 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC55295  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte Drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  RSA500437  Eleocharis quadrangulata Vernon H. Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the W side of Cana Pine Creek Road just S of the Tehama Co. line. 55 Comment
  CHSC37397  Elodea canadensis R. A. Schlising 1980-8-31 3979 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 49, along latter and across from Thermalito Afterbay. Comment
  CHSC117590  Elymus caput-medusae L. P. Janeway 2016-6-2 12105 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC56639  Elymus caput-medusae J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  CHSC28563  Elymus glaucus M. S. Taylor 1978-7-21 1794 Butte Lake Madrone, at its jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  UC204881  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  UC302239  Elymus glaucus E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CAS-BOT-BC203427  Elymus glaucus subsp. glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CHSC69061  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CAS-BOT-BC234104  Elymus multisetus Lowell Ahart 1983-6-26 4114 Butte Along Ponderosa Way, ca. 1/8 mi. E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 mi. NE of Oreoville, Sierra Nevada 500 Comment
  CHSC117316  Elymus ponticus L. P. Janeway 2016-6-2 12103 Butte Northern High Sierra Nevada. Plumas National Forest; Fileds Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC45420  Enemion occidentale Lowell Ahart 1973-2-28 156 Butte Along the south side of Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north-east of Bangor. 304 Comment
  CHSC84384  Enemion occidentale Lowell Ahart 1968-2-22 Butte Swede's Flat Road. 304 Comment
  CHSC112926  Epilobium campestre B. Castro; Sabrina Bell 2012-6-12 1928 Butte Sacramento Valley. Ca 1.7 air mi E of Hwy 99 and 0.75 mi N of Hwy 162 of NE edge of Thermalito Thermalito Afterbay, 0.45 mi SW of old 'Oroville Jcn' on maps, now jcn of Tres Vias and Wilbur Roads. 45 Comment
  CHSC33677  Epilobium campestre L. Ahart 1981-5-16 2805 Butte On the Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC27723  Epilobium canum subsp. latifolium Robert A. Schlising 1978-10-10 3344 Butte Hwy 70, Feather River Canyon, from 0.2 to 0.5 mi north of Arch Rock Tunnel; roadside. Comment
  CHSC94256  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2006-7-16 12986 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS120645  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  UCD105781  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCD105645  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-9-13 3813 Butte Pinkard Creek, ca. 1/8 mile N of Lost Creek Reservoir Dam, ca. 2.2 miles NW of Strawberry Valley. 1100 Comment
  RSA725008  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UC398938  Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville 1500 Comment
  CHSC44411  Epilobium densiflorum Lowell Ahart 1988-6-21 6048 Butte In a depression near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC70338  Epilobium glaberrimum R. A. Schlising 1980-7-31 3943 Butte 1.1 mi S of Inskip along Skyway. Roadside. Comment
  UC600548  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-7 Butte Butte Creek Jonesville 1500 Comment
  UC1602171  Epilobium lactiflorum H. F. Copeland 1932-8-22 Butte ridge se crest of Butte Creek (near spring); Lassen National Forest, vicinity of Jonesville Comment
  CHSC54304  Epilobium minutum Vernon H. Oswald; Lowell Ahart 1991-6-5 4646 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC29658  Epilobium torreyi J. D. Jokerst 1980-5-28 794 Butte Top of North Table Mt., S of Cherokee Rd. In vernal pools. 403 Comment
  SD10029  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville 1500 Comment
  SEINET9765342 Image available Equisetum hyemale Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CHSC46324  Equisetum laevigatum Lowell Ahart 1989-5-28 6288 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS95928  Eragrostis cilianensis Lowell Ahart 1999-8-22 8187 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA0106524  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CAS-BOT-BC284085  Eragrostis pectinacea var. pectinacea John Thomas Howell 1959-9-20 34687 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  CDA31777  Eragrostis pectinacea var. pectinacea L. Ahart 2002-9-7 9928 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC34204  Eragrostis pectinacea var. pectinacea J. D. Jokerst 1981-9-26 1501 Butte Swale ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  CHSC101491  Eremogone cliftonii Samantha Mackey Hillaire 2008-5-22 1252 Butte Pulga Road (County Road 76555F/County Road 302) north of Mayaro, approx 1.2 mile N of intersection with County Road 665553 and Forest Service Road 23N32Y. Mapped in several other places along road cut. 731 Comment
  CHSC30859  Eremogone cliftonii L. Ahart 1980-9-10 2636 Butte Along the edge of the road, ca. 3 mi ne of Millsap Bar, ca. 27 mi ne of Oroville. 1100 Comment
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Jul 8 2014
  CHSC90973  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8376 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road on southwest side of Dogwood Creek; canyon of North Fork Feather River. 594 Comment
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Jul 8 2014
  CHSC61631  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  CAS-BOT-BC300689  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295161  Erigeron inornatus Lowell Ahart 1981-7-7 2913 Butte East of the bridge across Rocky Honcut Creek, Swedes Flat Road, ca. 7 mi. N of Bangor 350 Comment
  CHSC85443  Erigeron petrophilus var. sierrensis R. D. Fischer; Jenny Marr 2003-11-23 14 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  CAS-BOT-BC300277  Erigeron strigosus var. strigosus Lowell Ahart 1988-6-29 6111 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock 548 Comment
  CHSC37500  Erigeron sumatrensis J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1677 Butte Top of North Table Mt. north of Cherokee Rd. Adjacent of basalt outcrop. 381 Comment
  JEPS106152  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte In a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CHSC80857  Eriogonum dasyanthemum Lowell Ahart 2001-7-6 8884 Butte West of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET940363 Image available Eriogonum eremicum E. B. Copeland 1930-1 Butte Above Jonesville 2000 Comment
  CHSC29787  Eriogonum lobbii M. S. Taylor; R. S. Schlising, J. D. Jokerst 1980-6-14 2872 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC61327  Eriogonum lobbii Lowell Ahart 1993-7-31 7143 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CHSC20968  Eriogonum luteolum var. luteolum M. S. Taylor 1975-9-12 921 Butte Abundant along railroad tracks, ca. 1/2 mi n of Magalia. 609 Comment
  UC1594721  Eriogonum marifolium Lowell Ahart 1992-7-29 6892 Butte about 1 mi e, about 1/2 mi nw of Lotts Lake Carr mine 1828 Comment
  CHSC42028  Eriogonum nudum var. pubiflorum Lowell Ahart 1986-8-15 5391 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  CDA22637  Eriogonum nudum var. pubiflorum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  RSA0005154  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga. Comment
  CAS-BOT-BC262210  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  CHSC44046  Eriogonum ursinum var. ursinum L. P. Janeway 1987-6-13 2197 Butte Along Ponderosa Way (Rim Rd) 3.8 NE of Jarbo Gap. East-facing roadcut. 883 Comment
  SBBG1660  Eriogonum vimineum H. and M. Dearing 1938-6-21 2044 Butte 15 mi N of Chico Comment
  UC171430  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte near Stirling 1074 Comment
  CHSC30728  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  CHSC329  Eriophyllum lanatum var. grandiflorum M. Roberson 1956-5-21 Butte Near Paradise along Skyway. 548 Comment
  CHSC38153  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1983-5-12 1765 Butte Table Mountain. West of Phanton Falls ca. 500 meters along the south edge of Coal Cr. Canyon. 365 Comment
  CHSC90247  Erodium cicutarium Robert Kissane 1989-4-20 11 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  CHSC90927  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC99320  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  UCD103168  Erodium cicutarium A. A. Heller 1914-4-21 11312 Butte Chico. Comment
  UCD103256  Erodium moschatum A. A. Heller 1914-4-21 11313 Butte Chico. Comment
  SEINET8410797  Erythranthe bicolor A. A. Heller 1915-5-28 11905 Butte Cohasset; near the upper limit of the digger pine in teh Sierra foothills. Comment
  CHSC48997  Erythranthe floribunda Vernon Oswald 1984-6-3 1251 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. 39 Comment
  CHSC61503  Erythranthe floribunda Lowell Ahart 1993-5-10 6934 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC94652  Erythranthe floribunda Lowell Ahart 2006-9-28 13374 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC101675  Erythranthe glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC44685  Erythranthe glaucescens R. Banchero 1980-3-27 83 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  SEINET8360340  Erythranthe glaucescens Sam M. Grossberg 1978-4-21 15 Butte ca. 100 yds wnw of Highway 32, 9.2 mi ne of Chico. 381 Comment
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC44736  Erythranthe guttata R. Banchero 1980-6-17 244 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC45737  Erythranthe guttata Cathy Young 1988-4-23 9 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CAS-BOT-BC151460  Erythranthe latidens Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET8399965  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  CHSC38702  Erythranthe nasuta Vernon Oswald 1983-5-7 443 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.7 mi e of the power lines. 353 Comment
  CHSC44741  Erythranthe nasuta R. Banchero 1980-4-7 92 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with the Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and the Hurleton-Swedes Flats Rd. 373 Comment
  CHSC44755  Erythranthe pulsiferae R. Banchero 1980-6-16 231 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, Ca 5 mi NW of the jct of Humbolt Rd and Hwy 32. 1292 Comment
  SEINET10469671  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3416 Butte T22N R5E ne sec 6. Pulga SW quad. Both sides of Hwy 70 at Pulga bridge, on serpentine outcrops, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  CHSC10826  Erythronium multiscapideum Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  UCD149852  Erythronium multiscapideum Harry George; William Anderson 1965-4-20 s.n. Butte Feather River Canyon. Comment
  CHSC2508  Eschscholzia caespitosa W. Fitzwater 1958-3-19 Butte Humboldt Rd., Chico area. 426 Comment
  CAS-BOT-BC402644  Eschscholzia caespitosa Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  SEINET12094433  Eschscholzia caespitosa K. T. Pomeroy 1988-1 14 Butte ca 9.6 km N of Oroville, 75 m W of Table Mountain-Cherokee Road 245 Comment
  POM125725  Eschscholzia caespitosa subsp. caespitosa C. C. Bruce 1897-04 2019 Butte Nelson's bar. Comment
  CAS-BOT-BC402969  Eschscholzia californica A. A. Heller; H. E. Brown 1902-5-6 5456 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC402974  Eschscholzia californica Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CHSC103728  Eschscholzia lobbii Lowell Ahart 2010-5-16 16702 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC23471  Eschscholzia lobbii J. R. Lee 1974-4-22 3 Butte 10 yds s of road on the Skyway ca. 6 mi from Chico city limits. 152 Comment
  CHSC36181  Eschscholzia lobbii John J. Krajanowski 1981-4-14 13 Butte Beatson Hollow, 3/4 mi w of Cherokee Road and 6 mi n of Oroville. 316 Comment
  CHSC38579  Eschscholzia lobbii Vernon Oswald 1983-2-16 83 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.4 mi e of the power lines. 304 Comment
  CHSC48614  Eucalyptus camaldulensis Vernon Oswald 1987-7-4 3090 Butte Rancho Aquas Frias. Nelson West Rd. at 7-Mile Lane, between Chico and Butte City. 30 Comment
  CHSC105488  Eucephalus breweri L. P. Janeway 2010-8-29 10172 Butte High Cascade Range. Humboldt Summit; along ridge line about 250 m west of Humboldt Road at the summit. At Plumas County line. 2030 Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  SEINET10453750  Euphorbia crenulata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4069 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  JEPS119517  Euphorbia maculata Lowell Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CDA19192  Euphorbia oblongata L. Pejsa 2001-5-16 PDR P 073954 Butte Sacramento Valley; at 2760 Mariposa, Chico. 0 Comment
  CAS-BOT-BC202423  Euphorbia ocellata A. A. Heller 1939-9-18 15481 Butte Neal Road to Paradise 1 mile above the Oroville road junction Comment
  SEINET10841057  Euphorbia serpillifolia Mary Susan Taylor 1979-10-3 Taylor 2219 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CHSC65324  Eurybia integrifolia Lowell Ahart 1995-10-3 7670 Butte East of the dirt road, west of a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC97781  Eurybia radulina L. P. Janeway 2007-8-12 9158 Butte Northern High Sierra Nevada. Near junction of Bald Rock Road and Road 21N31Y, 2.3 km south of 'town' of Brush Creek. 1001 Comment
  CAS-BOT-BC310669  Euthamia occidentalis Lowell Ahart 1982-10-11 3860 Butte About 1/10 mile south-east of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  UCD132335  Euthamia occidentalis L. Ahart 1982-10-11 3860 Butte ca. 1/10 miles southeast of HQ, Graylodge Wildlife Refuge, ca. 12 miles southwest of Gridley. 35 Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CHSC93657  Festuca Lowell Ahart 2006-5-19 12635 A Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  SEINET11688370  Festuca californica Unknown 1985-1 4998 Butte 0.12 mi E of dirt road, about 1.5 mi NE of Concow of Reservoir 732 Comment
  CAS-BOT-BC278300  Festuca californica subsp. californica Lowell Ahart 1985-5-15 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  RSA712991  Festuca californica var. californica L. Ahart 2006-5-10 12626 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 406 Comment
  JEPS120095  Festuca perennis Lowell Ahart 2012-6-14 18189 Butte On the south side of the path, lawn, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  JEPS119620  Ficus carica Lowell Ahart 2012-6-21 18227 Butte About 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  SEINET10475090  Filago gallica Mary Susan Taylor 1978-5-6 Taylor 1623 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  CHSC50552  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4343 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC43057  Fragaria vesca L. P. Janeway 1987-6-5 2151 Butte Upper reach of Carey Gulch where rd 22N89 crosses it 0.5 mi from Oro Quincy Hwy. Edge of road near creek. 1097 Comment
  CHSC48844  Fragaria vesca Vernon Oswald 1984-4-9 1121 Butte Feather Falls Trail, near the trail head at the end of Bryant Ravine Rd. 755 Comment
  CAS-BOT-BC437080  Fragaria virginiana subsp. platypetala H. F. Copeland 1920-8-29 162 Butte Jonesville 1219 Comment
  CAS-BOT-BC62903  Frangula californica subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia. 731 Comment
  CAS-BOT-BC62904  Frangula californica subsp. tomentella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CAS-BOT-BC62936  Frangula californica subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia. 731 Comment
  CAS-BOT-BC62944  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  JEPS119744  Frangula californica subsp. tomentella Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte On the sides of a horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC30924  Frangula rubra subsp. obtusissima M. S. Taylor 1980-9-19 3337 Butte S side of Coutelenc Rd, ca. 1/4 mi e of its jct with the Skyway, Magalia. 609 Comment
  CHSC1083  Fraxinus dipetala V. Holt 1931-4-24 Butte Forest Ranch. 548 Comment
  CHSC109647  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, aobut 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC136071  Fritillaria affinis Vesta Holt 1931-3-9 s.n. Butte Near Chico Comment
  CAS-BOT-BC130312  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte Old Utah Mine, near Magalia Comment
  CHSC36542  Galium aparine L. Ahart 1982-6-4 3557 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 304 Comment
  CHSC78268  Galium aparine Lowell Ahart 2000-6-29 8534 Butte In Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC102984  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 273 Comment
  CHSC75301  Galium murale Lowell Ahart 1999-5-24 8077 Butte Along the sides of the museum, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
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Jan 17 2007
  CHSC93858  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  CHSC51911  Galium porrigens var. tenue Kim Haas 1988-4-24 6 Butte Ca 100 ft SE of Horesshoe Lake and 6.0 mi NE of Chico. 131 Comment
  JEPS26674  Galium porrigens var. tenue P. C. Hutchison 1961-6-9 2093 Butte 7 mi s Jarbos Gap (along US Alt. 40); canyon of the north fork of the Feather River Comment
  UC1523186  Galium porrigens var. tenue M. S. Taylor and L. Hanson 1981-3-16 3406 Butte e side Truex Rd ca 1/2 mi s jct. with Hwy 70 (ca 7 mi n of Oroville); Cherokee Quad. 304 Comment
  CHSC37370  Galium tricornutum R. A. Schlising 1981-4-24 4233 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC46460  Galium trifidum var. pusillum V. Oswald; L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CHSC77979  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte On the margin of the Thermalito Afterbay, on the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS120916  Gamochaeta ustulata Lowell Ahart 2013-5-27 18719 Butte About 50 yards S of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC38447  Garrya fremontii Vernon Oswald 1983-2-16 80 Butte Upper Bidwell Park, Chico, near th e end of the strip of riparian woodland bordering the n edge of Hooker Oak Recreation Area. 80 Comment
  CHSC6162  Gastridium phleoides E. Parreno 1968-4-15 54 Butte NE of Municipal Golf Course in Upper Bidwell Park on slope of ridge, Chico. Comment
  SBBG583  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 mi N of Lone Pine Forest Guard Stn, St Hwy 32 Comment
  UCD169894  Gastridium phleoides Lowell Ahart 2008-5-21 14780 Butte On the north side of the South Fork of Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River. About 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  UCD117437  Gaultheria ovatifolia Clarence R. Quick 1966-6-29 66 -33 Butte Northwest of Sly Reservoir. Comment
  SEINET10939929  Gayophytum heterozygum Mary Susan Taylor 1979-8-4 Taylor 2175 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC103656  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CHSC98965  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  JEPS114959  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC36292  Geranium dissectum M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4353 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  JEPS119716  Geranium dissectum Lowell Ahart 2012-4-30 17926 Butte About 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  SBBG128462  Geranium dissectum L. Ahart 2012-4-30 17926 Butte ca. 20 yards SE of the intersection of S Rim Trail and Ten Mi House Rd, ca. 5/8 mi W of Hwy 32, ca. 9 mi NE of Chico, S part of Upper Bidwell Park 250 Comment
  CHSC90248  Geranium molle Robert Kissane 1989-4-20 12 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  UC600384  Geum macrophyllum var. perincisum E. B. Copeland 1925-7-25 Butte Jonesville 1500 Comment
  SEINET10496734  Gilia capillaris Mary Susan Taylor 1978-7-19 Taylor 1768 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CDA13726  Gilia capitata subsp. mediomontana G. F. Hrusa, T. D. Wilfred 1997-6-27 13904 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  SEINET10869728  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-10 Ahart 4953 Butte 10 meters north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC1257  Gilia tricolor J. Gulick 1929-3-17 Butte Oroville. 53 Comment
  CAS-BOT-BC266485  Githopsis diffusa Lowell Ahart 1982-6-15 3574 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls 1000 Comment
  CHSC21741  Githopsis pulchella Robert A. Schlising 1964-6-11 2723 Butte Few miles south of Paradise along Honeyrun Road. Comment
  CHSC38287  Githopsis pulchella subsp. campestris Vernon Oswald 1983-5-18 508 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CHSC40401  Githopsis pulchella subsp. campestris Lowell Ahart 1985-5-15 4967 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  JEPS28832  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1306 Butte ca. 3 mi. n.w. Paradise (along Honeyrun rd.) 243 Comment
  UC890661  Githopsis pulchella subsp. campestris A. A. Heller 1937-5-31 15340 Butte about 21 mi from Oroville (near the junction of Highway 24 and the Yankee Hill road) Comment
  CHSC38288  Githopsis specularioides Vernon Oswald 1983-4-25 381 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC62541  Githopsis specularioides B. Castro 1993-6-3 464 b Butte Ca 2.5 mi NE of Concow Lake, ca 30 ft E of large bend in Concow Road, 883 Comment
  RSA21308  Githopsis specularioides C. B. Wolf 1937-5-12 8653 Butte West side of So. Honcut Creek, 2.6 miles E of Bangor; Sierra Nevada Foothills. 213 Comment
  SEINET10464588  Githopsis specularioides Mary Susan Taylor, James D. Jokerst 1980-4-18 Taylor 2526 Butte On east side of Humbug road, about 3 miles southwest of Nimshew 518 Comment
  SEINET10972188  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart s.n. Butte Swedes Flat road, near Bangor 457 Comment
  SEINET10843174  Glyceria elata A. Arthur Heller 1928-7-10 Heller 14694 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  CHSC44455  Glyceria occidentalis Lowell Ahart 1988-5-29 6014 Butte Bottom of a wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  RSA770103  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  SEINET10475273  Gnaphalium thermale Mary Susan Taylor 1977-10-10 Taylor 1511 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  CHSC26817  Gratiola ebracteata M. S. Taylor 1978-5-7 1599 Butte Richvale pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC30677  Gratiola ebracteata M. S. Taylor; J. D. Jokerst 1980-3-28 2399 Butte Just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1.8 mi e of Hwy 99. 68 Comment
  CAS-BOT-BC302079  Grindelia Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  SEINET10473781  Grindelia camporum Mary Susan Taylor 1981-7-10 Taylor 4059 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CAS-BOT-BC305285  Grindelia hirsutula Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  JEPS113882  Grindelia hirsutula L. P. Janeway 2007-6-26 1656 Butte Northern High Sierra Nevada; Along Hwy 70 2.1 road mi NE of Jarbo Gap, at the Plumas Natonal Forest sign; 1.6 air mi NW of North Fork Feather River. At the E-facing canyon edge of the road pullout area. 633 Comment
  CHSC77477  Grindelia hirsutula var. davyi Anna Pinsky 1997-4-30 43 Butte Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  UC480670  Hackelia californica H. F. Copeland 1930-7-20 1313 Butte Jonesville 1524 Comment
  JEPS118061  Helenium puberulum Lowell Ahart 2011-8-17 17625 Butte About 40 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS34876  Helianthus bolanderi H. A. Dutton 1921-1-1 Butte Hooker Oak Chico, Hooker Oak Comment
  CHSC45698  Helminthotheca echioides Vernon Oswald 1983-6-28 783 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Along the edge of ponds in the refuge. Comment
  CHSC51358  Helminthotheca echioides Vernon Oswald 1990-9-20 4452 Butte Portion of Rancho Bosquejo. Sacramento River at the west end of Cana Hwy. Along the river. 48 Comment
  CHSC30710  Hemizonella minima M. S. Taylor 1980-5-27 2705 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 Comment
  CHSC36532  Hemizonella minima L. Ahart 1982-6-4 3532 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC314999  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte North of Bean Creek Road about 0189 mile south-east of Little Bald Rock 975 Comment
  UCD132993  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte ca. 50 feet east of Hwy 99 ca. 4 miles north of East Biggs Road; at a pumping station just west of the Thermalito Afterbay levee. 32 Comment
  SEINET10475207  Hemizonia fitchii Mary Susan Taylor 1980-8-15 Taylor 3250 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  SEINET9340684  Hemizonia fitchii Unknown 1937-7-11 37380 Butte 7 mi W of Honcut Open field Comment
  CHSC99004  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2008-5-21 14772 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC101325  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS47390  Hesperevax caulescens L. R. Heckard, and Robert Ornduff, Hal Weidman 1966-4-27 1473 Butte field along US Hwy 99 about 11 mi se Chico Comment
  CAS-BOT-BC310190  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-5-8 s.n. Butte 3 miles north-east of Honcut. Near North Honcut Creek. About 1/4 mile north of the Peter Ahart Ranch 70 Comment
  RSA0111936  Hesperocyparis macnabiana Lowell A. Ahart 2015-4-30 20117 Butte About 0.25 mile south of Forbestown Reservoir Road, about 2.5 miles (air) northeast of Forbestown. 890 Comment
  CAS-BOT-BC175999  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  JEPS98477  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte 3 mi SE of Paradise (just W of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 286 Comment
  CHSC47435  Hesperolinon micranthum Lowell Ahart 1979-5-29 1890 Butte About 1/4 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CHSC30084  Heterocodon rariflorum M. S. Taylor; J. D. Jokerst, L. Ahart, R. Schlising 1980-7-20 3191 Butte Big Bald Rock. Ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC30385  Heterocodon rariflorum J. D. Jokerst 1980-7-18 996 Butte Top of North Table Mtn., ca. 100 m NW of the fct. of Cherekee Rd. and the E edge of the Mt. Comment
  CHSC42134  Heterocodon rariflorum Lowell Ahart 1973-5-29 247 Butte Near a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC78242  Heterocodon rariflorum Lowell Ahart 2000-6-27 8527 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line,about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC143631  Heteromeles arbutifolia Sally Bianco 1995-11-3 1050 Butte 0.25km N of Concow School on S end of Concow Rd. 549 Comment
  CHSC38643  Heteromeles arbutifolia Vernon Oswald 1983-6-9 656 Butte Upper Bidwell Park, Chico, near Parking Area R (2.3 mi e of the power lines). 228 Comment
  CAS-BOT-BC310252  Heterotheca John Thomas Howell 1959-9-26 35088 Butte Cuesta Power House, N. Fk. Feather River 426 Comment
  CHSC43243  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UC725600  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mi above Pentz (on the Paradise grade) Comment
  CHSC66670  Hibiscus lasiocarpos var. occidentalis Vernon H. Oswald 1996-7-17 8067 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  UC897798  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CHSC102729  Hirschfeldia incana Lowell Ahart 2009-7-9 16020 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC107574  Hoita macrostachya Lowell Ahart 2011-8-17 17631 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC84242  Hoita macrostachya Lowell Ahart 2003-7-17 10420 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  CHSC62552  Hoita orbicularis B. Castro; J. Jurewicz 1993-7-7 469 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  CAS-BOT-BC150116  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CHSC12003  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. On mountain top. 2000 Comment
  CHSC101672  Hordeum marinum subsp. gussoneanum Lowell Ahart 2009-4-26 15637 Butte On the westside of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC101125  Hordeum murinum subsp. glaucum Lowell Ahart 2009-5-8 15670 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  JEPS117881  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  CAS-BOT-BC536586  Horkelia californica var. elata Forest Sheehan 1975-7-7 s.n. Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  CHSC48849  Horkelia fusca subsp. parviflora Vernon Oswald 1985-7-2 1882 Butte Skyway (Bull Hill Rd.) at Coon Creek, 5.5 mi se of Butte Meadows. On bank of creek in a meadow. 1554 Comment
  UC600383  Horkelia fusca subsp. tenella E. B. Copeland June, 1931 Butte Jonesville Comment
  CHSC46400  Horkelia tridentata Lowell Ahart 1989-5-28 6277 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  POM319240  Horkelia tridentata Patricia Wilder 1971-6-23 5208 Butte Oregon Hill road 4.1 miles SE of Challenge, W of California State Hwy 49. W slope of the Sierra Neveda, Yuba River 732 Comment
  UCD113568  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville. 1550 Comment
  CAS-BOT-BC536254  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC36515  Hosackia stipularis var. ottleyi L. Ahart 1982-6-1 3530 Butte Above road, ca. 1/8 mi n of jct of Lower Forbestown Rd and Ponderosa Way, along Ponderosa Way, ca. 5 mi w of Forbestown. 700 Comment
  UC1532351  Hydrocotyle verticillata Vernon Oswald 1986-6-11 2110 Butte just e. of Diversion Dam (Upper Bidwell Park, on s. side of Upper Park Rd., Chico); Chico, Upper Bidwell Park 134 Comment
  CHSC71390  Hypericum concinnum Vernon H. Oswald 1998-7-1 9244 Butte Ca. 1 air mi west of Pulga and 0.4 mi west of Rim road along a spur road intersecting Rim Road 4.1 mi north of Jarbo Gap. 853 Comment
  SD42246  Hypericum concinnum Carl Wolf 1941-7-23 4315 Butte Northern Sierra Nevada, 6.6 mi W. of De Sabla on Road to Forest Ranch 762 Comment
  CHSC51366  Hypericum formosum var. scouleri Vernon Oswald 1990-9-11 4448 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. Occasional on the swampy meadow. 960 Comment
  CHSC104855  Hypericum perforatum Lowell Ahart 2010-6-25 16841 Butte Open pasture field, on the north side of the improved parking area, about 100 yards north of the cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
  CHSC38364  Hypochaeris glabra Vernon Oswald 1983-3-31 234 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  RSA500418  Idahoa scapigera Vernon H. Oswald 1989-3-1 3726 Butte S side of the East Branch of Mud Creek, E of Richardson Springs. At the falls. Comment
  CAS-BOT-BC133560  Iris hartwegii Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  HSC87295  Iris macrosiphon Bruce Hamren 1978-4-24 20 Butte Upper Miocene Canal 448 Comment
  RSA366832  Iris missouriensis M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  POM183198  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC116645  Isoetes nuttallii Lowell Ahart 2016-4-15 f 20743 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC29220  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte Just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99. 68 Comment
  JEPS113221  Isoetes nuttallii Lowell Ahart 2007-5-22 13903 Butte Along small swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC78208  Isolepis cernua Lowell Ahart 2000-5-24 8390 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 39 Comment
  JEPS114774  Isolepis setacea Lowell Ahart 2008-7-23 15149 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET10932402  Isopyrum occidentale Mary Susan Taylor, K. Marsh 1974-3-16 Taylor 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Associates: Dudleya. Comment
  CHSC109602  Juglans hindsii Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwwell Park, Chico. 76 Comment
  CDA39581  Juglans hindsii J. T. Howell 1959-9-2 34703 Butte Feather River Highway 2 miles below West Branch Bridge. Comment
  SEINET10937859  Juglans hindsii Mary Susan Taylor 1975-5-6 Taylor 559 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC111734  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte On the south side of Big Chico Creek, about 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC36891  Juncus L. Ahart 1982-6-1 3527 Butte Along the road, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  JEPS98459  Juncus brachyphyllus Lowell Ahart 2000-6-6 8459 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC28831  Juncus bufonius var. bufonius J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 423 Butte Top of North Table Mt, ca 1.0 mi n of jct of east edge of Mt and Cherokee Rd. 381 Comment
  CHSC50695  Juncus bufonius var. bufonius Lowell Ahart 1990-5-25 6484 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC78327  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte On the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-norhing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC96860  Juncus bufonius var. bufonius Lowell Ahart 2007-6-3 13970 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  CHSC99318  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14791 A Butte Along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  JEPS113863  Juncus bufonius var. bufonius Lowell Ahart 2007-6-3 13970 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir 415 Comment
  JEPS117241  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  CHSC103724  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  CHSC28135  Juncus bufonius var. congestus J. D. Jokerst 1979-5-6 212 Butte Peter Ahart Ranch, N.E. of intersection of Palermo-Honcut Hwy. and Central House Rd. Comment
  CHSC31838  Juncus bufonius var. congestus L. Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. Bottom of a small swale in a farmed field. 50 Comment
  CHSC27059  Juncus capitatus Lowell Ahart 1978-5-1 1679 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38919  Juncus capitatus Vernon Oswald 1982-4-26 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC46425  Juncus capitatus Lowell Ahart 1989-5-28 6282 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC47541  Juncus capitatus Lowell Ahart 1980-5-11 2241 Butte Open pasture field on the west side of the Pentz Magalia Highway, about 1/2 mile south-west of Kunkle Reservoir, about 3 miles south of Paradise. 457 Comment
  CHSC55455  Juncus capitatus L. P. Janeway 1991-4-21 3914 Butte About 1 mi south of Wyandotte and 1/2 mi west of Dunstone Road. 175 Comment
  SEINET226470  Juncus capitatus B. Ertter, JL Strachan; L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Marysville and Oroville 30 Comment
  SEINET10971397  Juncus cyperoides Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4692 Butte About 0.5 mi SW of the jct of Black Bart Rd and Forbestown Rd, ca. 14 mi E of Oroville; Yellow Pine Forest; 650 m. 650 Comment
  CHSC96936  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS114881  Juncus effusus subsp. effusus Lowell Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA726659  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14300 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  CHSC31433  Juncus ensifolius L. Ahart 1980-9-10 2619 Butte Near the edges of seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC69058  Juncus ensifolius Lowell Ahart 1997-8-1 7763 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC94611  Juncus ensifolius Lowell Ahart 2006-9-13 13317 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC112329  Juncus exiguus Lowell Ahart 2013-7-9 18830 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  JEPS122156  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte South of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC110147  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-18 1648 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SD121519  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca. 2 miles north and I(c) mile east of Honcut, between Marysville and Oroville. Wet bare soil around the edges of a large vernal pool in one of the farmed fields. Common only around edge of pool. 49 Comment
  CHSC103709  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC103732  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 375 Comment
  JEPS110156  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 368 Comment
  UCD141562  Juncus longistylis A. A. Heller 1917-7-28 12837 Butte Butte Meadows. 1280 Comment
  CHSC28655  Juncus mertensianus J. D. Jokerst 1979-9-23 357 Butte W. slope of Humboldt Peak, 1/4 mi. E. of Humboldt Summit (Humboldt Road). Northern most portion of Butte County. 2042 Comment
  SEINET11787693  Juncus nevadensis R. A. Schlising, Jokerst, J. D. 1982-1 1653 Butte easternmost pond on bench along S edge of Coon Hollow 1707 Comment
  CHSC78340  Juncus orthophyllus Lowell Ahart 2000-6-29 8536 Butte East side of Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS118343  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-northing Creek, about 150 yards north of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  UC398898  Juncus orthophyllus E. B. Copeland 1929-7-16 347 Butte Jonesville 1550 Comment
  CHSC40001  Juncus oxymeris Lowell Ahart 1983-8-16 4297 Butte Along the edges of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC102425  Juncus patens Lowell Ahart 2009-5-30 15779 Butte On dry soil, broad open drainage on oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC96916  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 Comment
  SEINET10472460  Juncus phaeocephalus Mary Susan Taylor 1978-9-8 Taylor 1891 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC113109  Juncus tenuis Lowell Ahart 2013-11-13 19241 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC32375  Juncus tenuis J. D. Jokerst 1980-6-14 837 Butte Bald Rock, on its N slopes. 914 Comment
  CHSC97131  Juncus tenuis Lowell Ahart 2007-7-2 14244 Butte On the east side of the restroom, at the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 1001 Comment
  CHSC32758  Juncus uncialis J. D. Jokerst 1981-4-10 1289 Butte Top of North Table Mt, area between Beatson Hollow and Coal Cr Canyon. 335 Comment
  CHSC96941  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley. 24 Comment
  CHSC97252  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale. 29 Comment
  HSC100776  Juncus usitatus Lowell Ahart 2009-7-4 15999 Butte W side of gravel road, ~100 yd. S of parking lot 3, Gray Lodge Waterfowl Management Area, 6 (air) mi. SW of Gridley. 21 Comment
  CAS-BOT-BC235676  Keckiella breviflora var. glabrisepala A. A. Heller 1913-6-6 10785 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  UCR47786  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada Mtns, Rocky slopes and fill along the Feather River about 2.9 mi south of the Plumas County line 549 Comment
  CHSC65176  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CDA35627  Kickxia elatine J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330073 Butte Chico; Rancho Llano Seco. 0 Comment
  SEINET10582525  Kickxia elatine Mary Susan Taylor 1978-9-8 Taylor 1895 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  CHSC36416  Koeleria phleoides Donald M. Burk 1982-4-24 115 Butte Along top of canyon on N. side of Neal Rd., ca. 0.6 mi. W. of Elliot Spring House. 243 Comment
  UC426991  Kyhosia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  CHSC96358  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte Sacramento Valley. 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilataum, 282 Chico Rd, Oroville. Comment
  CAS-BOT-BC340449  Lactuca saligna John Thomas Howell 1959-9-20 34704 Butte Feather River Highway at West Branch bridge Comment
  CAS-BOT-BC340535  Lactuca serriola John Thomas Howell 1959-9-20 34628 Butte Eastern outskirts of Oroville 60 Comment
  SEINET5709525 Image available Laennecia coulteri Grady L. Webster, G. Ledyard Stebbins 1967-1 7532 Butte Rancho Llano Seco, near end of west arm of Eddy Lake.; Eddy Lake Comment
  JEPS120051  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte On the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC28482  Lagophylla glandulosa Robert Schlising 1979-8-17 3466 Butte Richvale vernal pools, 1/4 mi s jct Hwys 162 to Oroville and 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC38369  Lagophylla glandulosa Vernon Oswald 1983-5-31 586 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 300 ft e of Day Camp. 91 Comment
  SFV4001  Lagophylla glandulosa M. L. Vincent 1960-9-7 112 Butte Sierra Nevada On dry bluff overlooking Butte Creek Canyon. 3 miles west of Paradise on the Skyway. 215 Comment
  CAS-BOT-BC341298  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC341317  Lagophylla glandulosa David D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  CHSC50314  Lagophylla ramosissima subsp. ramosissima Vernon Oswald; Mary Bailey 1990-5-19 4221 Butte First side branch of Nance Canyon northeast of the power transmission lines, its head at 'The Narrows', ca. 1.2 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 137 Comment
  SEINET3450773  Lamarckia aurea Unknown 2003-4-8 10051 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, northwest of Cherokee Road, about 1/8 miles northwest of the iron gate and fence 320 Comment
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  UC727015  Lamium amplexicaule A. A. Heller 1920-4-10 13360 Butte Chico Comment
  CAS-BOT-BC337912  Lasthenia californica Lowell Ahart 1970-4-20 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC277  Lasthenia californica J. Turner 1930-3-25 Butte Chico Creek Canyon. 152 Comment
  CHSC90989  Lasthenia californica subsp. californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
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Jan 19 2011
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CAS-BOT-BC354116  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte One mile N of Rock Creek along the county rd parallelling US Highway #99E. Comment
  UC725646  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte 1 mi n Rock Creek (along the road e of U.S. Highway #99E) Comment
  CHSC110444  Lasthenia glaberrima B. Castro 2007-3-29 1619 Butte Sacramento Valley. Ca 0.8 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd in area of grassland and scattered shallow vernal pools. 57 Comment
  CDA34700  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 miles (air) northeast of Oroville. Comment
  JEPS98423  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte 5 air miles SW of Oroville (near margin of Thermalito Afterbay, S side of access road to boat ramp, w of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC48510  Lathyrus brownii Vernon Oswald 1985-5-16 1762 Butte Chico Meadows 200 ft n of the spring. 1316 Comment
  SEINET10940068  Lathyrus nevadensis Mary Susan Taylor 1980-4-18 Taylor 2509 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET12151178  Lathyrus sphaericus C. V. Piper 1906-1 s.n. Butte Chico Comment
  CDA13877  Lathyrus sulphureus G. F. Hrusa, T. D. Wilfred 1997-5-7 13735 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UC127751  Lathyrus sulphureus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10973185  Lathyrus sulphureus Mary Susan Taylor 1980-4-19 Taylor 2536 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC80513  Layia chrysanthemoides Lowell Ahart 2001-4-15 8725 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC321781  Layia fremontii Lowell Ahart 1980-4-21 2104 Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC3453  Layia fremontii Judy Potter 1966-3-21 Butte Roadside-Pentz Road 1 mile east of US 99E. Comment
  CHSC8140  Layia fremontii B. Hamilton 1969-4-20 105 Butte Found 1 mile south of Pentz Rd on Highway 99 along roadside. Comment
  RSA256659  Layia fremontii Linda M. Barker 1974-4-20 146 Butte Skyway Road, 1 mile E of Hwy 99. 61 Comment
  CHSC113135  Leersia oryzoides Lowell Ahart 2013-9-20 19056 Butte Along a ditch, about 100 yards west of the railroad, about 300 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC102422  Lemna minuta Lowell Ahart 2009-7-9 16008 Butte On wet soil and in shallow water, along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC66153  Leontodon saxatilis subsp. longirostris Vernon H. Oswald 1996-5-9 7544 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS103249  Leontodon saxatilis subsp. longirostris Lowell Ahart 2002-5-7 9610 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC103735  Leontodon taraxacoides subsp. longirostris Lowell Ahart 2010-5-16 16700 Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC51221  Lepechinia calycina Lowell Ahart 1979-5-29 1892 Butte Growing east of the Pentz Magalia Highway, about 1/8 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  SEINET13946707 Image available Lepechinia calycina T. A. Ranker, P. G. Trapp 1994-1 1615 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min map), along road; ca 1300 ft alt., T21N, R4E, SEC6 396 Comment
  JEPS124201  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  JEPS87616  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte about 1.5 mi n and 1 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CHSC35634  Lepidium strictum R. E. Preston 1982-4-4 217 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  CAS-BOT-BC13067  Lepidium virginicum var. menziesii L. S. Rose 1931-4-14 s.n. Butte Oroville. Comment
  POM183170  Lepidium virginicum var. pubescens H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 Comment
  UC436299  Lepidium virginicum var. pubescens E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  CDA38812  Leptochloa fascicularis L. Ahart 2011-10-29 17731 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC54187  Leptosiphon bicolor Vernon H. Oswald; Lowell Ahart 1991-5-31 4634 Butte Dan Beebe Trail in the Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool, between Oroville Dam Blvd. East and Glen Pond. 91 Comment
  CHSC44323  Leptosiphon ciliatus Lowell Ahart 1979-4-22 1833 Butte On a bank along North Honcut Creek, about 1/2 mile north of Avocado Avenue and on the east side of North Honcut Creek, about 3 miles north-west of Bangor. 91 Comment
  CDA13325  Leptosiphon filipes G. F. Hrusa, T. D. Wilfred 1996-7-9 13171 Butte Sierra Nevada; Approx. 1 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC2384  Leptosiphon filipes R. Carter 1965-3-23 172 Butte Found ca. 20' inside gate to Richardson Springs just off Cohasset Rd. 20' N of road. 167 Comment
  UCD85177  Leptosiphon filipes CNPS SN Foothill Team 2005-5-4 SNNR 0017 Butte City of Chico, Upper Bidwell Park. 128 Comment
  CAS-BOT-BC341743  Lessingia nana Rimo Bacigalupi; G. T. Robbins 1955-7-15 5304 Butte Just above Big Chico Creek, about 4 miles above the Hooker Oak 121 Comment
  CHSC38376  Lessingia nemaclada Vernon Oswald 1983-10-2 1050 Butte Upper Bidwell Park, Chico, on the north rim about half way between the heads of the intermittent streams which flow into Sycamore Creek. 347 Comment
  CHSC39349  Lessingia nemaclada Lowell Ahart 1983-6-30 4179 Butte Along the dirt road, about 1 1/2 miles north-east of Concow Res. 550 Comment
  RSA725007  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte At the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  RSA79046  Lessingia nemaclada E. K. Balls, Percy C. Everett 1952-10-14 18215 Butte 2.4 miles southwest of Butte-Plumas county line on Highway 24 274 Comment
  JEPS32698  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi w Oroville 45 Comment
  CHSC57133  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-1 2911 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. 2011 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  CHSC2291  Lilium humboldtii V. Holt 1935-7-1 Butte De Sabla. ... Field redacted by CHSC, contact the data manager for more information 762 Comment
  UC726301  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte river nw Chico Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  CAS-BOT-BC110623  Limnanthes alba Lowell Ahart 1980-4-30 2136 Butte Sierra Nevada. On Swedes Flat Road near Bangor. 320 Comment
  UC971829  Limnanthes alba subsp. alba Annetta Carter 1942-5-2 1669 Butte s Oroville Comment
  CHSC55716  Limnanthes douglasii subsp. nivea Jennie J. DuBose 1991-4-2 3 Butte Ca. 45 m w of Table Mountain Cherokee Road. 3.75 km n of Oroville on n Table Mountain. 366 Comment
  HSC92521  Limnanthes douglasii subsp. nivea Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 44 Butte On N Table Mtn., S of Paradise on Cherokee Rd., at E end of Table Mtn. 381 Comment
  RSA33078  Limnanthes douglasii subsp. rosea A. A. Heller 1938-4-14 s.n. Butte Flat, treeless summit of Table Mountain north of Oroville. Upper Sonoran Life Zone. 305 Comment
  RSA614435  Limnanthes douglasii subsp. rosea K. L. Chambers 1962-4-21 2113 Butte Hwy. 99E, 11.6 mi, N. of its junction with Hwy. 32 in Chico. Comment
  UCD116440  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  CAS-BOT-BC45924  Limnanthes floccosa subsp. californica L. P. Janeway; Pat Kelly 1991-3-31 3867 Butte Between Hwy 32 and Dead Horse Slough, and from 600 to 1200 ft west of Bruce Road Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) Comment
  CHSC41228  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1985-3-30 2188 Butte N. edge of county, plants scattered throughout this quarter section and N. into Tehama Co. 121 Comment
  SEINET10496786  Linanthus bakeri Mary Susan Taylor 1980-5-31 Taylor 2760 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10496789  Linanthus bicolor Mary Susan Taylor 1980-4-16 Taylor 2491 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  JEPS118329  Linanthus filipes Lowell Ahart 2011-4-28 17332 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  SEINET10496800  Linanthus filipes Mary Susan Taylor 1980-6-14 Taylor 2870 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UC1185290  Linanthus parviflorus H. E. Brown 1896-10-2 185 Butte near Oroville 53 Comment
  CHSC42119  Lindernia dubia Lowell Ahart 1986-11-9 5443 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC113360  Lindernia dubia var. anagallidea Lowell Ahart 2014-4-25 19400 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC97926  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Weedy at edge of flooded rice checks, experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  JEPS95879  Lindernia dubia var. anagallidea Lowell Ahart 1999-8-13 8131 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC107370  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC109566  Linum bienne L. P. Janeway 2012-6-27 10918 Butte Northern High Sierra Nevada. On top of Sunset Hill. Edge of old disturbance surrounding fire lookout, radio towers and outbuildings. 1011 Comment
  UC2026863  Liquidambar styraciflua Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC600634  Listera convallarioides W. F. Wright 1926-7-12 324 Butte near Butte Creek Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  UC1135274  Lithocarpus densiflorus C. G. Albertus 1933-7-25 51 Butte 1 mi n Powellton; Chico Quad. 1097 Comment
  SEINET10904710  Lithocarpus densiflorus Mary Susan Taylor 1975-2-23 Taylor 391 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  SEINET10482996  Lithophragma Mary Susan Taylor 1981-4-5 Taylor 3496 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CAS-BOT-BC430879  Lithophragma bolanderi Lowell Ahart 1980-5-29 2357 Butte 5 miles north-east of Mountain House 1100 Comment
  CHSC29729  Lithophragma bolanderi J. D. Jokerst 1980-4-21 623 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC42859  Lithophragma bolanderi Lowell Ahart 1987-5-12 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CAS-BOT-BC432269  Lithophragma campanulatum A. A. Heller 1915-6-10 11955 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC46271  Lithophragma campanulatum Vernon Oswald 1989-5-8 3761 Butte Feather Falls Trail, between the trailhead at the end of Bryant Ravine Rd and Frey Creek. 731 Comment
  CHSC3999  Lithophragma parviflorum L. R. Alexander 1967-4-9 8 Butte Found 4.5 mi. from Chico on Paradise road ca. 300 yds. off the left hand side of the road. 182 Comment
  CHSC2363  Lithospermum californicum R. Carter 1965-5-1 194 Butte Found on Bean Creek Rd., 2 mi. SE of intersection with Bald Rock Rd., on E bank above road. 1005 Comment
  CHSC27840  Lithospermum californicum T. B. Devine 1977-6-5 426 Butte Beside Humbug Rd. Next to PG and E Flume. 853 Comment
  CHSC26713  Logfia gallica M. P. Hayes 1978-4-7 152 Butte On top of ne butte on Butte College campus at the corner of Pentz and Clark roads. 170 Comment
  JEPS127021  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  RSA713011  Lolium perenne subsp. multiflorum L. Ahart 2005-12-11 12519 Butte Rice Experiment Station, between the Main Ditch and Stine lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CAS-BOT-BC271205  Lolium temulentum Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC39511  Lolium temulentum Lowell Ahart 1983-6-21 4068 Butte Along the edge of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  CHSC30027  Lomatium caruifolium var. denticulatum L. Ahart 1980-5-4 2188 Butte Pasture field southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  CHSC38737  Lomatium caruifolium var. denticulatum Vernon Oswald 1983-3-26 210 Butte Upper Bidwell Park, Chico, in the grassy flat on the north side of Horseshoe Lake. 102 Comment
  CHSC42599  Lomatium caruifolium var. denticulatum Vernon Oswald 1985-4-30 1735 Butte Chico Municipal Airport near the e end of Piper Ave. 82 Comment
  UC726872  Lomatium caruifolium var. denticulatum A. A. Heller 1938-4-23 15056 Butte 1/4 mi. e. Jarboe Pass (on State Hwy. #24) Comment
  UC195446  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1914-4-13 11259 Butte 8 mi. n. Oroville Comment
  CHSC109005  Lomatium macrocarpum Lowell Ahart 2012-4-20 17897 Butte Cliffs, below the rim, on the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CHSC42623  Lomatium marginatum var. marginatum Vernon Oswald 1985-6-15 1835 Butte Black Bart Rd. ca. 1 mi se of Lampkin Rd. 640 Comment
  CHSC102191  Lomatium marginatum var. purpureum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  CHSC31865  Lomatium utriculatum L. Ahart 1977-4-16 1307 Butte Along sides of North Honcut Creek; Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC240689  Lonicera interrupta Lewis S. Rose 1945-5-12 45034 Butte Richardson Springs 304 Comment
  SEINET7085240  Lonicera interrupta Steven R. Hill 2010-7-17 38551 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  CHSC106231  Lonicera japonica L. P. Janeway; B. Castro 2010-6-4 9992 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 425 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  JEPS120007  Lonicera japonica Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17914 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  UC127775  Lotus grandiflorus var. grandiflorus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS98454  Lotus humistratus Lowell Ahart 2000-5-31 8424 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  SEINET3523638 Image available Lotus incanus A. A. Heller 1939-4-26 15387 Butte Along road leading down to the Feather River from Stirling Comment
  SEINET3694615 Image available Lotus macranthus A. A. Heller 1938-5-28 15125 Butte On Feather River Hwy west of Pulga Comment
  JEPS103299  Lotus micranthus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  UC1129010  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  UC176246  Lotus purshianus var. purshianus A. A. Heller 1913-10-7 11146 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  JEPS87135  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  JEPS121788  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  CHSC38574  Ludwigia palustris Vernon Oswald 1983-8-26 1029 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. On the bed of Chico Creek. 85 Comment
  SEINET10453035  Ludwigia peploides Mary Susan Taylor 1979-10-2 Taylor 2206 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CAS-BOT-BC198301  Lupinus John Thomas Howell 1976-4-1 51521 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  CAS-BOT-BC198299  Lupinus John Thomas Howell 1976-4-2 51555 Butte About 2 miles southeast of Chico. 60 Comment
  UC726545  Lupinus A. A. Heller 1942-6-5 16497 Butte about halfway between the junction Middle Fork and West Branch of the Feather River Highway; halfway bet jct of Middle Fork and West Branch Feather River Comment
  POM24313  Lupinus affinis C. C. Bruce 1897-04 2029 Butte Chico Comment
  CHSC33710  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-21 1334 Butte Along side of road. Ca 100 m NE of Dogwood Creek on Pulga Rd. Comment
  CAS-BOT-BC198378  Lupinus albifrons Charles Piper Smith 1949-4-16 49104 Butte Bangor, 2.6 miles east, Yuba-Butte Bridge, Loma Rica Road Comment
  CHSC33728  Lupinus albifrons M. S. Taylor 1981-4-5 3480 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC90029  Lupinus albifrons Keith Bunney 1991-4-21 2 Butte West side of Hwy 162, 2.9 mi ne of Oroville. 121 Comment
  SEINET12161341  Lupinus albifrons T. E. Lewis 1978-1 5 Butte on Magalia Hwy, E side of rd ca 50 m S of Pent Rd jct, ca 11km S of Paradise 270 Comment
  CAS-BOT-BC201350  Lupinus albifrons var. albifrons L. S. Rose 1931-4-11 s.n. Butte In outskirts of Oroville Comment
  CAS-BOT-BC201358  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49114 Butte Harts Mills - Brush Creek Road Comment
  CHSC39976  Lupinus andersonii L. Ahart; P. Ahart 1983-7-29 4250 Butte Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  SEINET5558506  Lupinus andersonii H. S. Gentry, S. Koch 1962-1 19781 Butte Forest Ranch, along Rt. 32. Comment
  UCD106673  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte Summit above Jonesville. 2133 Comment
  UCSB63589  Lupinus bicolor Fillinger, Jennifer 1991-4-7 Butte 2 mi. NE of Chico Municipal Airport, at jct. of Cohasset Road and Richardson Springs Road 60 Comment
  UCD107158  Lupinus bicolor J. Doty 1969-4-1 621 Butte on east side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  CHSC106867  Lupinus bicolor var. tridentatus Lowell Ahart 2011-5-1 17340 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC48528  Lupinus bicolor var. tridentatus Vernon Oswald 1984-3-7 1090 Butte Upper Bidwell Park, Chico, beside Yahi Trail at Salmon Hole. 158 Comment
  CHSC924  Lupinus bicolor var. tridentatus P. Delaplane 1965-4-6 29 Butte Fairly abundant along side of Cohasset Rd. 3/4 mi above turnoff to Richardson Springs Rd. Chico. 243 Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  RSA31972  Lupinus formosus var. robustus A. A. Heller 1942-5-18 16478 Butte A short distance west of the Hooker Oak, east of Chico. Comment
  JEPS113885  Lupinus grayi L. P. Janeway 2007-7-2 9078 Butte Northern High Sierra Nevada; Plumas National Forest; along the road to Cascade 1.2 road km N-NW of its crossing of Fall River; 0.3 air km E of the confluence of Dark Canyon at Fall River 1067 Comment
  SEINET10490348  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte T22n r5e ne1/4 sec 22. Pulga sw quad. Chino ridge, ca 1.2 mi. N of 22n31, ca 3 Air mi. Se of pulga. 853 Comment
  UC1564806  Lupinus lepidus var. sellulus V. Oswald and L. Ahart 1989-7-12 3847 Butte ca 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  CHSC90024  Lupinus microcarpus Keith Bunney 1991-4-21 1 Butte In empty lot n side of Hwy 162, 1.6 mi e of Hwy 99. 76 Comment
  CHSC38506  Lupinus microcarpus var. densiflorus Vernon Oswald 1983-5-4 425 Butte Upper Bidwell Park, Chico, beside Yahi Trail 500 ft e of Day Camp. 97 Comment
  POM193372  Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  UC727079  Lupinus polyphyllus var. burkei A. A. Heller 1938-7-20 15279 Butte upper end Snag Lake (7 mi e of Chaparral); upper end of Snag Lake 1524 Comment
  CHSC2511  Lupinus stiversii W. Fitzwater 1958-4-19 Butte A Few miles above Paradise. Comment
  CAS-BOT-BC329253  Lupinus stiversii Lowell Ahart 1982-6-15 3547 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls. 1000 Comment
  POM23591  Lupinus subvexus var. transmontanus C. C. Bruce s.n. Butte Butte Comment
  JEPS117605  Luzula cascadensis Lowell Ahart 2010-9-28 17260 Butte West edge of a 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CAS-BOT-BC320471  Luzula comosa var. laxa Peter F. Zika 2011-7-6 25530 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  CHSC26620  Lycopus americanus Hayes 1977-9-24 117 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road z (Chico-Butte City Highway). In ditch along road edge. 30 Comment
  POM180888  Lycopus americanus H. F. Copeland 1923-6-4 816 Butte Nelson. Comment
  SEINET10452837  Lythrum californicum Mary Susan Taylor 1978-9-8 Taylor 1904 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC30953  Lythrum hyssopifolia L. Ahart 1980-7-4 2456 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS120840  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CHSC117344  Lythrum portula B. Castro; Sabrina Bell 2015-5-21 2045 Butte Sacramento Valley. Off E edge of Thermalito Afterbay, ca 1.36 air mi E of Hwy 99 and 1 mi S of Highway 162E. Just S of the Afterbay perimeter road, at NE corner of low pond (impoundment) with willows. 43 Comment
  CHSC47442  Lythrum salicaria Lowell Ahart 1984-8-19 4782 Butte North of the state borrow area, west of Pacific Heights Road, about 5miles south-west of Oroville. 30 Comment
  UCD102941  Lythrum salicaria Carl M. Wick 1975-8-15 s.n. Butte Oroville. Comment
  CHSC60995  Lythrum tribracteatum Lowell Ahart 1993-5-15 6938 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  CHSC12612  Maclura pomifera S. Posner 1972-9-23 Butte Corner of West 5th St. and Oak, Chico. Comment
  CAS-BOT-BC342642  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CHSC84327  Madia elegans subsp. densifolia Lowell Ahart 2003-8-3 10466 Butte On the east side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CHSC33144  Madia elegans subsp. vernalis J. D. Jokerst 1981-5-11 1309 Butte Top of Doe Mill Ridge. 457 Comment
  CAS-BOT-BC344323  Madia exigua John Thomas Howell 1967-6-22 42613 Butte Magalia 701 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  SEINET10475532  Madia exigua Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4050 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC78235  Madia gracilis Lowell Ahart 2000-6-29 8543 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SBBG28509  Madia gracilis E. B. Copeland 1931-8-14 Butte Jonesville 1500 Comment
  CAS-BOT-BC345236  Madia subspicata Lowell Ahart 1980-5-25 2323 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CAS-BOT-BC347384  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  UC1069944  Malacothrix floccifera P. L. Johannsen 1936-7-22 962 Butte 1.5 mi sw Head of Bottle Creek; Lassen National Forest, Paynes Creek Quad. 1432 Comment
  UC1609223  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  CHSC33214  Malvella leprosa R. E. Preston 1981-6-19 96 Butte In and along road, atop levee; ca. 0.8 km s of Headquarters, Grey Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. 20 Comment
  CHSC3917  Marah fabacea var. agrestis Wayne O. Baum 1967-3-13 27 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway, along cliff bank. 304 Comment
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CHSC4668  Meconella californica R. Carter 1966-4-11 341 Butte Found ca. 1/2 mi. E of Bidwell Bar along old R. R. tracks; growing in sandy soil in middle of tracks. 152 Comment
  RSA754957  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10-50 yards north of the Bears Lair Picnic Area and Coastal Redwood Grove sign, about 80-130 yards east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  CHSC46104  Medicago polymorpha J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1542 Butte Grey Lodge Waterfoul Management Area along Rutheford Rd. where it turns 90 degrees to the north. Comment
  CHSC108817  Medicago praecox Lowell Ahart 2012-4-9 17836 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CHSC45288  Medicago praecox Vernon Oswald 1987-4-8 2314 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. 85 Comment
  UC1594676  Medicago praecox Lowell Ahart 1992-3-21 6739 Butte Oroville Dam; e side, s side of spillway 274 Comment
  CHSC21046  Medicago sativa M. S. Taylor 1975-6-30 827 Butte On e side of Cohasset Rd, ca. 500 yds s of Lassen Ave, ca. 1 mi n of Chico. 60 Comment
  RSA700242  Melica aristata L. Ahart 2004-7-23 11299 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam., About 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  CAS-BOT-BC269373  Melica californica Lowell Ahart 1987-5-9 5581 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CAS-BOT-BC269389  Melica californica John Thomas Howell 1962-6-16 37540 Butte Magalia 731 Comment
  CHSC8226  Melica californica D. McClain 1969-5-1 67 Butte 15 yds. s. of Cohasset Rd., 3.2 mi e. of Cohasset. 457 Comment
  CDA32494  Melica harfordii l. Ahart 2004-6-22 11112 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. Comment
  CHSC116593  Melica harfordii L. P. Janeway 2015-6-17 11782 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower forbestown Road 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. 826 Comment
  CDA13293  Melica subulata G. F. Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  CAS-BOT-BC262498  Melica torreyana John Thomas Howell 1962-6-16 37538 Butte Magalia 731 Comment
  CHSC54438  Melilotus officinalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4734 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 2.1 miles east of its junction with Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  CHSC90202  Melissa officinalis Robert Kissane 1989-4-22 16 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  RSA755347  Mentha arvensis L. Ahart 2009-7-9 16009 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10498159  Mentha arvensis Mary Susan Taylor 1975-10-4 Taylor 957 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC26638  Mentha canadensis M. S. Taylor 1977-11-12 1530 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC42789  Mentha canadensis L. P. Janeway; Patty Costello 1987-9-5 2574 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC80658  Mentha pulegium Lowell Ahart 2001-6-1 8746 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  SFV16939  Mentha spicata J. N. Hogue 1980-9-6 83 .8 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC4697  Mentzelia laevicaulis R. Carter 1966-7-10 469 Butte Found Feather River Canyon 4.4 mi W of Butte Co. line along W side Hwy. 70, growing on dry granite slope along Hwy. 70. 609 Comment
  CHSC45980  Micranthes californica Lowell Ahart 1974-3-8 312 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS120045  Micranthes fragosa Lowell Ahart 2012-4-9 17825 Butte Seeps on the southeast bank of Big Chico Creek, about 20 yards northwest of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  CHSC3350  Micranthes integrifolia Robert L. Smith 1966-3-4 43 Butte Upper Bidwell Park, 7 mi. NE of Chico. Comment
  CHSC39531  Micropus californicus var. californicus Lowell Ahart 1983-6-12 4043 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC8146  Micropus californicus var. californicus J. G. Moore 1969-4-13 78 Butte Pentz Rd., 200 yds. e of Hwy 99, on s side of road. 60 Comment
  RSA754454  Micropus californicus var. californicus L. Ahart 2009-4-17 15554 Butte S slope of a ridge, about 300 yards W of Highway 32, near the S boundary, Upper Bidwell Park, about 5 air miles NE of Chico. 352 Comment
  UCD80099  Micropus californicus var. californicus CNPS SN Foothill Team 2005-4-13 SNFN 0079 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 30 m from the western boundary and 60 m from the southern boundary. 85 Comment
  SEINET11806700  Micropus californicus var. californicus P. J. Minton 1980-1 1 Butte E of Chico, ca 8.1 mi from junction of Rt. 99 on Rt. 32 488 Comment
  CHSC40298  Microseris douglasii Lowell Ahart 1985-4-29 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  POM35005  Microseris lindleyi C. C. Bruce 1898-05 2461 Butte [No locality information provided] Comment
  SEINET12326954  Microsteris gracilis Unknown 1981-1 23 Butte 8 km SE of Chico and 8 km NW of Paradise 125 Comment
  CHSC96952  Mimetanthe pilosa Lowell Ahart 2007-7-8 14270 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  HSC32632  Mimulus angustatus Gary S. Lester 1974-4-20 107 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  RSA169398  Mimulus aurantiacus var. grandiflorus L. S. Rose 1963-6-5 63139 Butte North Fork of Feather River, Arch Rock Tunnel. 488 Comment
  SEINET10570223  Mimulus floribundus Mary Susan Taylor 1978-7-21 Taylor 1827 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  UCD122722  Mimulus glaucescens B. L. Wiley 1975-4-18 15 Butte from junction of Hwys. 70 and 149, 11.8 mi e and 6.1 mi up Cherokee Rd. from junction of Table Mtn. Blvd. and Cherokee Rd. ca. 50 yds. w. 487 Comment
  SEINET12318322  Mimulus glaucescens K. D. Johnson 1978-1 20 Butte along Cohasset Rd toward Cohasset, 9 road mi N of East Ave, intersection in Chico 366 Comment
  SEINET12319563  Mimulus glaucescens S. E. Patton 1978-1 19 Butte 7.5 mi NE of jct Eaton Rd, S side of Cohosset Hwy 280 Comment
  JEPS87142  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  UC426957  Mimulus moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville 1550 Comment
  CDA13309  Mimulus moschatus G. F. Hrusa, T. D. Wilfred 1996-7-9 13155 Butte Sierra Nevada; Jordan Creek on W side of bridge over Marble Creek on USFS N60. Comment
  CHSC38705  Mimulus moschatus Vernon Oswald 1983-5-27 565 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  JEPS114717  Mimulus nasutus Lowell Ahart 2008-5-21 14774 Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  SEINET13711426  Mimulus pilosus Lowell William Ahart, Lowell William Ahart 1999-1 8133 Butte 12 Air Mi. SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC93973  Mimulus pulsiferae R. D. Fischer 2004-6-20 752 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  UC196165  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville rd 8 mi from Chico Comment
  UC135739  Minuartia californica Mrs. R. M. Austin Mar, 1896 79 Butte plains e Chico Comment
  CHSC93360  Minuartia cismontana Lowell Ahart 2006-4-28 12548 Butte Open flat pasture, south of the old dirt road, about 1/4 mile southeast of the reservoir, about 2 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 316 Comment
  CHSC96571  Minuartia douglasii L. P. Janeway 2006-5-14 8597 Butte Northern High Sierra Nevada. Upper part of open serpentine slope just west of Jordan Hill Road; 0.9 km east of Sawmill Peak lookout. 953 Comment
  CAS-BOT-BC22742  Moenchia erecta Lowell Ahart 1980-5-4 2192 Butte East of Oak Grove Cemetary, ca 3/4 miles SE of Hurlton 600 Comment
  JEPS95930  Mollugo verticillata Lowell Ahart 1999-8-13 8176 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD99630  Mollugo verticillata Rimo Bacigalupi; L. R. Heckard 1962-6-1 8581 Butte road to Centerville, about 200 feet east of its inception at the Paradise Road junction. 60 Comment
  CHSC39282  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte 3 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1100 Comment
  CHSC41356  Monardella breweri subsp. lanceolata R. A. Schlising; J. D. Jokerst 1980-7-2 3812 Butte NE of Forest Ranch, at junction of Ponderosa Way and Garland Road. Comment
  UC1124558  Monardella odoratissima subsp. glauca P. L. Johannsen 1936-7-16 923 Butte 1 3/4 mi E.S.E of Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle Comment
  JEPS87151  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte About 1 mile east of the Carr Mine, about 1/2 mile northwest of Lotts Lake. 1828 Comment
  UC2035956  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  CHSC102512  Monardella sheltonii Lowell Ahart 2009-5-30 15982 Butte Open area west of the Guardian Rock Trail, about 60 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC102988  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC43829  Monardella sheltonii L. P. Janeway 1987-5-20 2072 Butte SE-facing slope above hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  RSA796042  Monardella sheltonii L. P. Janeway 2012-6-23 10888 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Bachelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  UCR280840  Monardella sheltonii Lowell Ahart 2016-6-29 21051 A Butte north side of Lumpkin Road, c. 100 yards north of McCabe Creek, c. 3 air miles west of Forbestown 388 Comment
  CHSC68011  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar, Middle Fork Feather River, on canyon slope adjacent to dirt road at N apex of bend in road. 579 Comment
  UCD125285  Monardella viridis L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  NY411115  Monochoria vaginalis L. Ahart 1979-9-8 s.n. Butte California Rice Experiment Station. Valley Grassland. 33 Comment
  RSA97974  Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station. Comment
  CHSC50334  Montia chamissoi Vernon Oswald; Lowell Ahart 1990-5-29 4262 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. Locally abundant on wet gravel on the edge of the creek. 1316 Comment
  CHSC93989  Montia chamissoi R. D. Fischer 2004-6-20 779 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. On the east side of Chico Meadows, at meadow edge. 1371 Comment
  CAS-BOT-BC444888  Montia fontana A. A. Heller 1914-3-18 11209 Butte Eight miles north of Oroville Comment
  RSA325144  Montia fontana M. S. Taylor, Vernon H. Oswald 1984-4-4 5384 ` Butte S side of Humbug Road, 6 miles NE of Honey Run covered bridge, 10 air miles NE of Chico. 372 Comment
  CHSC87231  Montia fontana subsp. amporitana Lowell Ahart 2004-3-1 10700 Butte In a small depression, near low rocks, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 62 Comment
  CHSC98947  Montia fontana subsp. chondrosperma Lowell Ahart 2008-5-8 14717 Butte Below the high water line of Lake Oroville, about 150 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC56573  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. At damp place among shrubs along dirt road. 624 Comment
  CHSC57197  Montia parvifolia L. P. Janeway 1988-5-14 2767 Butte Steep bank along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. 922 Comment
  CHSC38557  Morus alba Vernon Oswald 1983-5-4 430 Butte Upper Bidwell Park, Chico, beside the trail on the N side of Chico creek 500 ft W of the power lines. 91 Comment
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
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Jun 20 2012
  CHSC103439  Muhlenbergia filiformis Lowell Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC38833  Muhlenbergia filiformis Vernon Oswald 1982-10-22 3 Butte Bidwell Park, Chico. Seep ca. 50 ft s of Upper Park Rd ca. 3.1 mi e of its junction with Wildwood Ave at a place called Diversion Dam. 121 Comment
  CHSC61373  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  LA9645  Muhlenbergia filiformis E. B. Copeland; 1929-7-16 339 Butte Jonesville 1550.0 Comment
  UC1563268  Muhlenbergia filiformis unknown 1990-10-21 6636 Butte about 1/2 mi w Gold Flat (1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  UC1609254  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte on large gravel bar on w side of river about 100 yards w bridge across Fall River (about 6 (air) mi ne of Feather Falls); Fall River 1036 Comment
  CHSC65460  Myosurus minimus Vernon Oswald 1984-3-28 1110 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n boundary of the park 1200 ft e of the Wildwood Ave. entrance. 86 Comment
  HSC66354  Myosurus minimus M. S. Taylor, J. D. Jokerst 1980-3-28 2397 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  CAS-BOT-BC260095  Nassella pulchra Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC54376  Nassella pulchra M. Bailey 1991-4-14 562 Butte Butte College campus. On foothills se of Steamboat Rock, in the vicinity of a drainage near the Butte Campus boundary. 144 Comment
  UCD116084  Nasturtium officinale Charles Martin 1986-4-26 11 Butte California: Sutter Co. Sutter Buttes, Canyon SE of North Butte, R2E, T16N, Sec. 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  UC426936  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville 1550 Comment
  CHSC39663  Navarretia filicaulis Lowell Ahart 1983-6-21 4092 Butte Found along Boomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  HSC104014  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  JEPS107883  Navarretia heterandra Lowell Ahart 2005-5-27 11812 Butte Pasture field, about 50 yards northwest of the tower, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  UC392180  Navarretia intertexta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC113518  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19597 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS110190  Navarretia intertexta subsp. intertexta Lowell Ahart 2006-7-16 13003 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CHSC1294  Navarretia leucocephala F. Hughes 1935-4-24 Butte Butte Creek Canyon. 121 Comment
  CHSC88962  Navarretia leucocephala subsp. leucocephala Christine Hantelman 2000-4-8 70 Butte On vernal pool preserve between Oroville airport runway and Table Mountain golf course. On margin of pools. 60 Comment
  JEPS104317  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2003-5-28 10232 Butte Bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS117326  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  UC856846  Navarretia nigelliformis A. A. Heller 1914-5-14 11402 Butte sw of Pentz (near Dry Creek) Comment
  CHSC36711  Navarretia pubescens D. H. Ikeda 1980-5-10 356 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  CHSC59119  Navarretia pubescens L. P. Janeway; B. Castro 1992-5-9 4166 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. 79 Comment
  RSA717288  Navarretia pubescens L. Ahart 2005-5-28 11819 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UC133838  Navarretia pubescens Mrs. R. M. Austin Apr 1883 268 Butte Comment
  UCD80640  Navarretia tagetina CNPS SN Foothill Team 2005-5-6 SNFN 0159 b Butte City of Chico, Upper Bidwell Park, ca. 50 m northwest of the road. 133 Comment
  CHSC64123  Navarretia viscidula subsp. purpurea B. Castro; L. P. Janeway 1988-6-5 262 Butte On slope above Little Chico Ck. 243 Comment
  SEINET10935977  Navarretia viscidula subsp. purpurea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4133 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC44512  Nemacladus interior Lowell Ahart 1988-7-3 6118 Butte Along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  CHSC84212  Nemacladus interior Lowell Ahart 2003-7-10 10371 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  SEINET12329565  Nemacladus interior Unknown 1984-1 4669 Butte At the Ponderosa Dam, ca 2 mi NW of Forbestown;along dirt road to the generator on the N side of 370 Comment
  CHSC90237  Nemophila heterophylla Thomas M. Scott 1989-4-19 11 Butte Ca. .2 km e of Covered Bridge (over Butte Creek), 10.2 km ese of Chico. 120 Comment
  SEINET10497054  Nemophila heterophylla Mary Susan Taylor 1979-5-4 Taylor 1994 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC40779  Nemophila pedunculata Lowell Ahart 1985-5-1 4889 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC26848  Nemophila spatulata M. S. Taylor; M. Hayes 1978-5-24 1660 Butte Scattered on drier edges of montane meadow, on n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  JEPS120593  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC66447  Nicotiana quadrivalvis Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  JEPS95801  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD110203  Notholithocarpus densiflorus B. F. Smith 1965-10-18 60 Butte 3/4 mile east-northeast of Woodleaf. 1021 Comment
  CHSC90657  Nuttallanthus canadensis Samatha Mackey Hillaire; Charles Hooks 2005-4-9 1213 Butte North Table Mountain Plateau. Shore of AL Chaffin Reservoir, SE side. 298 Comment
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Jan 18 2011
  SBBG57427  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi N of Chico on the Richardson Springs rd Comment
  CHSC48639  Oenothera elata subsp. hirsutissima Vernon Oswald 1984-7-9 1355 Butte Hwy 70 ca. 100 ft s of Arch Rock Tunnel. 487 Comment
  CHSC6028  Olea europaea M. MacArthur 1968-6-18 223 Butte Ca. 10 ft. W of Big Chico Creek and ca. 30 ft N of PSA bld. bridge, Chico State College. 60 Comment
  JEPS113318  Oreostemma alpigenum var. andersonii L. P. Janeway 2006-8-12 8847 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. Comment
  RSA0059253  Orobanche californica subsp. grayana H. F. Copeland 1931-8-4 1444 Butte Jonesville. Comment
  CHSC109784  Orobanche vallicola Lowell Ahart 2012-10-20 18509 Butte On the south edge of the paved park road, about 30 yards southeast of Table 2, east of the freeway, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET12328376  Orthocarpus attenuatus M. S. Taylor, Oswald, V. 1984-1 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 air mi NE of Chico Comment
  RSA234809  Orthocarpus campestris Francis W. Pennell, A. A. Heller 1940-6-5 25694 Butte North of Biggs. 61 Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  CAS-BOT-BC254365  Oryza sativa G. P. Rixford 1914-9-4 s.n. Butte Biggs Comment
  CHSC2167  Oryza sativa D. Bower 1953-9-8 Butte 4A Llano Seco. 30 Comment
  CHSC44181  Osmorhiza occidentalis V. Oswald; L. Ahart 1988-7-13 3589 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CHSC43298  Oxalis laxa Lowell Ahart 1979-4-6 1822 Butte On the west side of North Honcut Creek, about 3/4 mile north-east of the bridge across North Honcut Creek and Avacado Avenue, about 3 miles north-west of Bangor. 91 Comment
  RSA0060803  Oxalis pes-caprae Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  JEPS24983  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  CHSC102833  Panicum acuminatum var. acuminatum Lowell Ahart 2009-6-3 15832 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS87482  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte about 6 1/2 mi ne Stirling City (about 2 1/2 mi ne of Bald Mountain); ne of Bald Mountain 1584 Comment
  CHSC109788  Panicum capillare Lowell Ahart 2012-10-20 18515 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC62319  Panicum capillare B. Castro 1990-10-11 438 Butte Midway between Chico, Paradise and Oroville, ca 0.75 mi NW of 'Pentz', N and W of jcn Pentz and Messilla Valley Roads. In springs at base of W slope of Sausage Mtn. 164 Comment
  CHSC112104  Parentucellia viscosa Lowell Ahart 2012-6-5 18173 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of theiron gate on the north side of Cherokee Road, North Table Mountian, about 6 miles (air) north of Oroville. 295 Comment
  CHSC44431  Parentucellia viscosa Lowell Ahart 1988-5-29 6008 Butte Near a small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CAS-BOT-BC181183  Paronychia ahartii R. F. Hoover 1938-4-24 3242 Butte 3 mi. n. of Chico Comment
  UC1259504  Paronychia ahartii Lowell Ahart 1978-4-27 Butte Peter Ahart Ranch Honcut 50 Comment
  SEINET7067155  Parvisedum pumilum A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  CAS-BOT-BC259622  Paspalum dilatatum Lowell Ahart 1982-10-15 3895 Butte Along the edges of N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  SEINET10508285  Paspalum urvillei Mary Susan Taylor 1975-10-4 Taylor 952 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  SEINET10836216  Paspalum urvillei Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4049 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC101138  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC115190  Pectocarya pusilla Lowell Ahart 2015-4-27 20080 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  JEPS119983  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC94245  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC27958  Pellaea andromedifolia Sam M. Grossberg 1978-4-22 21 Butte North Table Mountain, ca. 2.5 mi nne of Cherokee Road, 6.0 mi n of Oroville. 365 Comment
  CHSC29102  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1980-4-27 2547 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  SEINET10529801  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5222 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  SEINET11716737  Pellaea mucronata M. S. Taylor 1980-1 2347 Butte overlooking Hamlin Canyon, ca 0.25 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise 302 Comment
  SBBG28911  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 mi from Oroville on the Feather River Hwy Comment
  SEINET194311  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 miles o\\from Oroville on the Feather River Highway in Arid Transition Zone. Comment
  RSA285683  Penstemon azureus subsp. angustissimus D. C. Michener 1980-8-4 3776 Butte Sierra Nevada. Talus slopes long CA 70 in open Pinus, chaparral transition ca 4 miles south of Pulga. Feather River Canyon Comment
  NY571185  Penstemon azureus var. azureus Mrs. C. C. Bruce 05 1898 2412 Butte Forest Ranch Comment
  NY571159  Penstemon azureus var. azureus F. W. Pennell 1940-6-5 25683 Butte Route 24; along Feather River, above Oroville; in Lassen National Forest 548.6 Comment
  NY600732  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  CHSC21055  Penstemon heterophyllus var. purdyi M. S. Taylor 1975-6-30 815 Butte Ca. 300 yds w of Cohasset Hwy, Cohasset. 731 Comment
  CHSC61592  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch. Comment
  CHSC11885  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  NY627411  Penstemon newberryi var. newberryi L. Ahart 1980-5-19 2312 Butte Near bridge, South Fork of Feather River. 800 Comment
  SEINET5329278 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1646 Comment
  CAS-BOT-BC239450  Penstemon rydbergii var. oreocharis H. F. Copeland 1920-8-12 126 Butte Beside Butte Creek 1676 Comment
  UC102996  Penstemon rydbergii var. oreocharis Mrs. R. M. Austin 1899-7-1 232 Butte Colby Comment
  CHSC32143  Pentagramma pallida L. Ahart 1975-1-4 694 Butte From Honcut go n to Cox Lane and then e to second pole line, follow PGE pole line s to the 4th pole, then go e to the large rocks; 2 mi n and 1 mi e of Honcut. 91 Comment
  CHSC32629  Pentagramma triangularis M. S. Taylor; L. Hanson 1981-4-2 3468 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  RSA0094695  Pentagramma triangularis C. C. Bruce 1897-06 1861 Butte [No location data on label] Comment
  CHSC90138  Pentagramma triangularis subsp. triangularis Jack Judkins 1983-4-16 9 Butte 6 mi east-southeast of Chico, 100 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  UCD127897  Perideridia kelloggii W. S. Wilkinson 1921-7-16 s.n. Butte Chico. Comment
  CHSC73912  Perideridia lemmonii B. Castro 1998-7-28 814 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near water-hole in center of meadow. 929 Comment
  UC1389952  Perideridia lemmonii T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5988 Butte 1 mi ne Paradise (by reservoir); Paradise reservoir Comment
  CHSC40243  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-2 1881 Butte Near the road connecting Humboldt and Humbug Rds. 0.3 mi e of Scotts John Creek. 1737 Comment
  SEINET3924533  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte On the west side of Wickman Road, about 1 mile south of Richvale West road, about 1.5 miles (air) southwest of Richvale.; 0 29 Comment
  CHSC50681  Persicaria hydropiper Lowell Ahart 1990-6-16 6521 Butte Growing on wet mud along McCabe Creek, below the high water line at Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC66897  Persicaria hydropiper Vernon H. Oswald 1996-10-22 8301 Butte Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CAS-BOT-BC413700  Persicaria hydropiper John Thomas Howell 1961-9-22 36770 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CHSC108130  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC83088  Persicaria lapathifolia Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC26647  Persicaria maculosa M. S. Taylor 1977-11-10 1513 Butte In dry irrigation ditch on s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  CHSC72252  Persicaria punctata Lowell Ahart 1998-9-11 8055 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC94595  Persicaria punctata Lowell Ahart 2006-9-11 13291 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  RSA725056  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  HSC46448  Petrorhagia dubia J. P. Smith, J. O. Sawyer 1973-4-14 6064 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  SBBG17322  Petrorhagia dubia M. Vincent 1962-4-17 201 Butte Pentz and Nelson Bar Rds, 5 mi S of Paradise Comment
  SEINET11931354  Petrorhagia velutina S. C. Joslin 1978-1 11 Butte Ca 11 mi N of Chico on Hwy 99 at intersection with Broyles Rd 61 Comment
  CHSC6003  Petunia M. MacArthur 1968-6-19 245 Butte In flr. bed ca. 20 ft. SE of main entrance to Administration bld., Chico State College. 60 Comment
  CHSC31637  Phacelia cicutaria Lowell Ahart 1974-4-14 403 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET12328343  Phacelia cicutaria Unknown 1984-1 4541 Butte Peter Ahart Ranch, ca 2.5 N and 2.5 E of Honcut 50 Comment
  CHSC83910  Phacelia cicutaria var. cicutaria Lowell Ahart 2003-4-10 10065 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  SFV11584  Phacelia egena M. L. Vincent 1964-4-9 535 Butte 2 miles south of Pearson Road on Clark Road. Comment
  CHSC38465  Phacelia ramosissima var. ramosissima Vernon Oswald 1983-6-13 670 Butte Upper Bidwell Park, Chico., ca. 200 ft s of the footbridge at the Golf Course. 91 Comment
  UC196274  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte Canyon of Big Chico Creek 76 Comment
  CHSC7187  Phalaris caroliniana J. G. Moore 1969-4-18 125 Butte 350 yds. nw of Cherokee Rd. 1 mi s of Oregon City turnoff. In meadow. 381 Comment
  JEPS94792  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte about 7 air mi n Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CHSC46276  Phalaris minor Vernon Oswald 1989-5-1 3752 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), at the n gate on Biggs-Afton Hwy just e of Butte Creek. Roadside. 18 Comment
  CHSC91099  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  JEPS95866  Phalaris paradoxa Lowell Ahart 1999-5-21 8068 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC30929  Philadelphus lewisii M. S. Taylor 1979-5-4 1990 A Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek, Rd, ca. 26 mi ne of Oroville. 1005 Comment
  RSA754544  Philadelphus lewisii L. Ahart 2009-5-23 15723 Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  CAS-BOT-BC539359  Philadelphus lewisii James I. Mallory 1970-5-26 373 Butte Little Butte Creek Canyon S of Irish Town 426 Comment
  RSA0057776  Philadelphus lewisii Edward Palmer 1892-6-7 s.n. Butte Near Chico. Comment
  SEINET10657662  Phleum pratense Lowell Ahart 1988-6-23 Ahart 6061 Butte Timothy. On damp rocky soil, along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville, Foothill Woodland. 259 Comment
  UCD118397  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  CHSC35094  Phlox speciosa subsp. occidentalis Herb Allen McLane 1980-4-25 20 Butte Plumas National Forest, MDM, E side of Ponderosa Way. 390 Comment
  CAS-BOT-BC134919  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  RSA325114  Phoradendron bolleanum var. densum M. S. Taylor 1975-9-19 918 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  CHSC3576  Phoradendron densum Judy Lee Potter 1966-2-26 Butte 4 miles north Paradise Comment
  CAS-BOT-BC135097  Phoradendron juniperinum Flower Shaw 1928-4-1 s.n. Butte Cherokee School Comment
  CAS-BOT-BC135129  Phoradendron juniperinum Lowell Ahart 1985-9-18 5169 Butte 2 miles W of Sly Creek Res. Tree was on lava soil on a lava cap, about 2 miles W of Sly Creek reservoir. E of the intersection of Golden Trout Crossing road on Reville Ridge 1000 Comment
  SEINET12230385  Phoradendron juniperinum L. Ahart, Ahart, P. 1985-1 5169 Butte about 2 mi W of Sly Creek Reservoir, E of the intersection of Golden Trout Crossing road on Reville 914 Comment
  LA209889  Phoradendron leucarpum subsp. tomentosum A. A. Heller; 1914-1-28 11157 Butte near Hog Springs, 6 mi E of Chico Comment
  CHSC45304  Phoradendron serotinum subsp. macrophyllum Vernon Oswald 1988-3-7 3249 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CAS-BOT-BC141247  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 304 Comment
  HSC72947  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte 100 ft. E of Pentz-Magalia Hwy., 1 mi. S of Kunkle Reservoir, 3 mi. S of Paradise 412 Comment
  UC1586516  Phyla nodiflora var. nodiflora Lowell Ahart 1991-9-14 6725 Butte about 2 mi e Honcut (Joie Osgood Ranch) 45 Comment
  UCD98425  Phytolacca americana var. americana B. F. Smith 1968-10-9 92 Butte 1 mile west of Old Forbestown, Plumas National Forest. 853 Comment
  CHSC39546  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC46176  Pilularia americana Lowell Ahart 1978-5-15 1720 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS98331  Pilularia americana Lowell Ahart 2000-5-21 8378 Butte 10 air miles NW of: slickens from the Cherokee mine, E side of Clark Road (Hwy 191), about 200 yds S of Dry Creek Oroville; ; <coords cont.: NW 1/4> 60 Comment
  RSA572044  Pinus monticola H. F. Copeland 1928-8-29 332 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  NY62730  Pinus sabiniana Anonymous 1925-7-22 s.n. Butte Chico Comment
  CHSC88240  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  SEINET10932925  Pityrogramma triangularis Mary Susan Taylor 1981-4-8 Taylor 3507 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET10546921  Plagiobothrys Mary Susan Taylor Taylor 987 Butte Bidwell Park, Chico. Comment
  CHSC28142  Plagiobothrys austiniae Robert A. Schlising 1979-4-30 3383 Butte Ca 10 mi nw of Oroville, near jct Pentz and Clark roads. At roadside. 76 Comment
  CHSC28151  Plagiobothrys austiniae Robert A. Schlising 1979-4-4 3351 Butte Northeast of Chico, along dirt road (formerly named Bruce Road) north of Skyway. In ditch. 76 Comment
  CHSC45897  Plagiobothrys austiniae Lowell Ahart 1984-4-6 4544 Butte About 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  UCD80165  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-15 SNFN 0082 a Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (~20 m from the east fence and ~40 m from the north fence. 81 Comment
  UC79364  Plagiobothrys cusickii Mrs. R. M. Austin Butte Comment
  CHSC26802  Plagiobothrys fulvus var. campestris M. S. Taylor; M. Hayes 1978-4-14 1568 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  UCD80148  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-14 SNFN 0033 a Butte Private Rock Ranch. Plot is located in the horse pasture, near the NE corner of the pasture located west of the barn and house, ~10 m from corner of pasture fence. 105 Comment
  CHSC31257  Plagiobothrys greenei Don Kroessig 1979-4-18 1 Butte N. Butte Co. NW of Singer Cr. 60 Comment
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  JEPS119703  Plagiobothrys nothofulvus Lowell Ahart 2012-5-2 17973 Butte West of the Government Pole Line, Upper Bidwell Park, about 3/4 mile east of Chico. Comment
  RSA754790  Plagiobothrys nothofulvus L. Ahart 2009-4-26 15645 Butte Sides of Guardians Trail, about 200 yards SW of Pine Trail, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SBBG40484  Plagiobothrys nothofulvus J. Ingram 1960-4-6 508 Butte below Pentz Rd, ca. 1 mi N of jct with Nelson Bar Rd, S of Paradise Comment
  CHSC117398  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC99476  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2008-6-13 14824 Butte Depression in a small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS98580  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte 5 air miles SW of Oroville (S side of the access road to the boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  RSA0036030  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  SEINET9084913  Plagiobothrys stipitatus var. micranthus L. Ahart 2000-5-18 8373 Butte Ca 0.125 mile W of the Oroville Airport and Larking Road, E of the cottonwood trees, ca 4.5 air miles SW of Oroville. 37 Comment
  UC66153  Plagiobothrys tenellus A. A. Heller and H. E. Brown 1902-5-9 5509 Butte near Clear Creek; Berry Canyon Comment
  HSC92460  Plantago coronopus L. Ahart 1981-5-16 2795 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 30 Comment
  CHSC54364  Plantago elongata M. Bailey 1991-4-19 566 Butte Butte College campus, ca 300 ft e of Williams Road, on western side of Well #3, ca 1/4 mi n of Pentz Road. 85 Comment
  CHSC101334  Plantago erecta Lowell Ahart 2009-4-22 15584 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC28636  Plantago erecta M. S. Taylor 1979-3-31 1974 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  UC171664  Plantago erecta Mrs. R. M. Austin Apr 1896 248 Butte Little Chico Creek Comment
  SEINET12328379  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  SEINET12332634  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  UCD124483  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte south side of Concow Road, on ridge, ca. 0.5 mile south of its junction with Ponderosa Way (rim road), ca. 2 miles north of Lake Concow, ca. 20 air miles northeast of Oroville. 853 Comment
  SEINET12318336  Plantago hookeriana Unknown 1978-1 18 Butte S side Hwy 32, ca 7.5 mi E jct Hwy 99 & 32 at Chico 515 Comment
  CHSC102827  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC107433  Plantago lanceolata L. P. Janeway 2011-6-29 10407 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC38583  Plantago lanceolata Vernon Oswald 1983-5-4 428 Butte Upper Bidwell Park, Chico, beside trail on the n side of Chico Creek beneath the power lines. 91 Comment
  CHSC47468  Plantago lanceolata Lowell Ahart 1973-8-13 264 Butte Growing along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS98311  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC51946  Platanthera leucostachys L. P. Janeway 1987-7-5 2444 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC59030  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  SEINET13710512  Platanthera sparsiflora Lowell William Ahart, Lowell William Ahart, Peter L. Ahart 1984-1 4757 Butte 5 Mi. NE Stirling City, 0.5 Mi. E Bald Mtn, 1750 M 1750 Comment
  CAS-BOT-BC93157  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  CHSC1212  Platystemon californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC30690  Plectritis brachystemon M. S. Taylor 1980-3-1 2335 Butte Among rocky outcrops on n-facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC31206  Plectritis ciliosa M. S. Taylor 1980-4-16 2488 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp, ca. 1 mi s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  RSA754580  Plectritis ciliosa subsp. insignis L. Ahart 2009-4-22 15604 A Butte S side of Guardians Trail, S of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC30878  Plectritis macrocera J. D. Jokerst 1979-3-20 1146 Butte Top of North Table Mt., ca 0.5 mi N of the jct of Cherokee Rd and the E edge of mt. 396 Comment
  CHSC73945  Pleuricospora fimbriolata B. Castro; L. Gehrung 1998-6-23 795 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, on W side of Oro-Quincy Hwy, on E side of SW-trending ridge overlooking Get-Up-and-Get Creek. 1191 Comment
  CAS-BOT-BC458148  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CHSC96379  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 35 Comment
  RSA0116253  Poa bolanderi Lowell A. Ahart 2014-7-10 19628 Butte About 100 yards south of Philbrook Road, about 1 air mile west of Philbrook Reservoir. 1665 Comment
  RSA774133  Poa bolanderi L. Ahart 2010-9-21 17198 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CAS-BOT-BC254921  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather RIver, about 2 miles SE of Jarbo Gap 283 Comment
  CHSC56834  Poa pratensis J. Lund 1980-4-8 Butte Chico; on the east side of Arcadian ca 100 ft north of Sacramento Avenue. 76 Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  CAS-BOT-BC244153  Poa sierrae Lowell Ahart 1978-4-19 1486 Butte Along the trail to Feather Falls, about 0.5 mile from the trail head 650 Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  POM70306  Pogogyne douglasii Edward Palmer 1892-6-7 2078 Butte Near Chico. Comment
  RSA141496  Pogogyne douglasii A. A. Heller 1914-5-13 11390 Butte Field near Nelson Comment
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Feb 6 2012
  UC196327  Pogogyne zizyphoroides A. A. Heller 1914-4-11 11275 Butte 8 miles north Oroville Comment
  CHSC48259  Polycarpon tetraphyllum Vernon Oswald 1988-5-8 3299 Butte Fernandez land grant. Oroville Wildlife Area at the Palm Ave. entrance. Near a pond. 30 Comment
  RSA697050  Polygonum amphibium var. emersum L. Ahart 2003-6-16 10287 Butte W side of Wickman Road, 1 mile S of Richvale West Road, 1.5 miles air SW of Richvale. 29 Comment
  CDA2832  Polygonum arenastrum L. Ahart 1998-7-1 8035 Butte Along the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS118036  Polygonum arenastrum Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  CHSC41905  Polygonum aviculare Lowell Ahart 1976-9-21 1200 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  CAS-BOT-BC414196  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  UC1562374  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte sw Forbestown Generator (on s side of reservoir); Forbestown Reservoir 487 Comment
  CHSC74694  Polygonum bidwelliae B. Castro 1998-6-13 790 E Butte Ca 5.5 air mi SE of Town of Paradise, directly opposite County Landfill, at edge of N side of unnamed canyon just S of Neal Road, under transmission lines. 128 Comment
  NY323753  Polygonum bidwelliae A. E. Bidwell 05 1878 s.n. Butte Comment
  SEINET3405100 Image available Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte Just back of the Rifle Range, 5 miles E of Chico, opposite Golf Links Comment
  CHSC45376  Polygonum bolanderi Vernon Oswald 1986-7-21 2212 Butte Little Butte Creek Canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  JEPS112783  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Carpenter Ridge, along road to Butte Meadows, 3.2 miles NE from the junction with Highway 32 1356 Comment
  CHSC104852  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 393 Comment
  CHSC28791  Polygonum californicum J. D. Prouty 1979-5-23 7905233 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  SEINET10479346  Polygonum douglasii Mary Susan Taylor 1978-9-9 Taylor 1916 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC105178  Polygonum douglasii subsp. spergulariiforme B. Castro; L. P. Janeway 1999-8-1 1020 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  JEPS113314  Polygonum douglasii subsp. spergulariiforme L. P. Janeway 2006-6-25 8694 Butte Northern High Sierra Nevada. West side of Coutolenc Road about 150 m north of Skyway; at Magalia Serpentine. Comment
  JEPS96004  Polygonum lapathifolium Vernon H. Oswald and Lowell Ahart 1996-5-27 7665 Butte U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and Sacramento River (seasonal marsh on s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC40783  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  SEINET10479669  Polygonum persicaria Mary Susan Taylor 1975-10-3 Taylor 924 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  RSA725032  Polygonum punctatum L. Ahart 2006-8-29 13237 Butte N of the canal and parking lot 16, W of the gravel road, Gray Lodge Wildlife area (Gray Lodge Waterflow Management area). 20 Comment
  UC122768  Polypodium Mrs. R. M. Austin Mar, 1896 237 Butte Little Chico Canyon Comment
  CAS-BOT-BC71872  Polypodium californicum Lowell Ahart 1987-5-9 5598 Butte along Pulga Road, about 1/2 mile southwest of Bardees Bar, along the North Fork of the Feather River 365 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  CHSC24894  Polypodium calirhiza R. W. Crum 1976-4-28 19 Butte 5 yds s of Butte Creek, 117 yds w of Covered Bridge, 4.35 mi ene of Skywaym 6.4 mi ese of Chico. 115 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  CAS-BOT-BC76865  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  CHSC99009  Polypogon australis Lowell Ahart 2008-5-21 14778 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  UC204879  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 mi n Oroville Comment
  SEINET10876076  Polypogon australis Lowell Ahart 1987-6-9 Ahart 5730 Butte On dry sand, on a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC30550  Polypogon interruptus J. D. Jokerst; M. S. Taylor 1980-9-11 635 Butte Adjacent to rice fields, 50 ft N of Goodspeed-Watt Rd, 0.2 mi N of its jct with Nelson Rd (ca 6 mi S of Chico). Comment
  CHSC50707  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte On the bottom of a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  HSC97102  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  RSA715468  Polypogon interruptus L. Ahart 2005-5-2 11779 Butte East side of the Sacramento River, northwest of Parrott landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 26 Comment
  JEPS127227  Polypogon maritimus Lowell Ahart 2016-5-30 20886 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC4402  Polypogon monspeliensis R. L. Smith 1966-5-1 2 Butte 5 mi sw of post office, Paradise. Comment
  SACT002054  Polypogon monspeliensis Herbert Copeland 1923-5-11 Butte Comment
  SEINET10507588  Polypogon monspeliensis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4150 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC237454  Polypogon viridis Lowell Ahart 1987-5-27 5700 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  SEINET10470608  Polystichum imbricans Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4213 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  SEINET10530123  Polystichum imbricans subsp. curtum Mary Susan Taylor 1980-3-19 Taylor 2388 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  JEPS108138  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  JEPS110225  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House 609 Comment
  UC1609395  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  CAS-BOT-BC102494  Populus fremontii John Thomas Howell 1961-9-22 36722 Butte Bank of Feather River, Oroville 53 Comment
  SEINET10460761  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland 397 Butte Above Jonesville 1750 Comment
  SEINET10840498  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte On drying border of pond, above Jonesville 1750 Comment
  RSA699698  Potamogeton diversifolius Lowell Ahart 2004-7-11 11226 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC51379  Potamogeton nodosus Vernon Oswald 1990-8-14 4433 Butte Upper Miocene Canal just upstream from Kunkle Reservoir, on the east side of Pentz-Magalia Hwy south of Paradise. In the south end of the canal. 441 Comment
  CHSC45583  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2041 Butte Near PG and E ditch ca 3/4 mi north of DaSAbla Res. at crossing of rd to Forks of Butte (Doe Mill Rd). 853 Comment
  CHSC54309  Potentilla glandulosa subsp. reflexa Vernon H. Oswald 1991-6-3 4640 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  JEPS121908  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA4662  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  UC1564787  Potentilla millefolia V. Oswald and L. Ahart 1989-6-27 3826 Butte ca. 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); along Butte Creek 1767 Comment
  UC481577  Potentilla millefolia H. F. Copeland 1931-6-11 1535 Butte Butte Creek Meadows , Jonesville 1828 Comment
  CHSC113324  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  CHSC48913  Poteridium annuum Vernon Oswald 1985-4-15 1709 Butte Upper Bidwell Park, Chico, on the north rim at the west intermittent stream flowing into Sycamore Creek. 274 Comment
  JEPS121993  Prunella vulgaris var. lanceolata Lowell Ahart 2014-7-13 19665 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM181780  Prunella vulgaris var. lanceolata H. F. Copeland 1927-9-4 464 Butte Jonesville. Comment
  UC1321007  Prunella vulgaris var. lanceolata Andrew P. Nelson with J. Weiler 1960-6-22 574 Butte Lassen National Forest Butte Meadows campground; , Butte Meadows campground 1325 Comment
  UCD80399  Prunella vulgaris var. lanceolata CNPS SN Foothill Team 2005-7-5 SNNR 0566 Butte CSUC, Big Chico Creek Ecological Reserve. 286 Comment
  CHSC48494  Prunella vulgaris var. vulgaris Vernon Oswald 1984-6-5 1255 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  JEPS120042  Prunus Lowell Ahart 2012-4-20 17901 Butte On the south side of Guardian Trail, about 40 yards southwest of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UCD113181  Prunus emarginata H. F. Copeland 1928-8-18 s.n. Butte Jonesville. Comment
  RSA595071  Prunus persica var. persica J. T. Howell 1976-7-14 51816 Butte Feather River Canyon Hwy, just E of Jarbo Gap SW of Bucks Lake on road to Oroville. 640 Comment
  CHSC1585  Prunus subcordata V. Holt 1935-4-5 Butte Honey Run grade. 304 Comment
  JEPS108573  Prunus subcordata L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8362 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake 777 Comment
  SFV11416  Pseudognaphalium luteoalbum M. L. Vincent 1965-4-16 621 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  CHSC66288  Pseudognaphalium stramineum Lowell Ahart 1996-5-9 7679 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC48277  Pseudostellaria jamesiana Vernon Oswald 1983-7-19 877 Butte Philbrook Rd. at the W. branch of the Feather River. 1554 Comment
  CHSC48190  Psilocarphus brevissimus var. brevissimus Vernon Oswald 1983-5-11 465 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CHSC90801  Psilocarphus tenellus var. tenellus Lowell Ahart 2005-5-2 11774 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC109605  Ptelea crenulata Lowell Ahart 2012-5-20 18094 Butte About 10 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. 356 Comment
  SEINET10899906  Pteridium aquilinum Mary Susan Taylor 1979-3-20 Taylor 1945 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC61646  Pterospora andromedea Lowell Ahart 1993-9-8 7162 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC12607  Punica granatum S. Posner 1972-9-20 Butte Ca. 20 ft. w of Nord Ave, ca. 1/4 mi n of First St, Chico. Comment
  CHSC108957  Pyracantha koidzumii Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17863 Butte South side of Big Chico Creek, east of the Deer Pen, near Table 12, Lower Bidwell Park, Chico. 65 Comment
  CHSC115686  Pyrola aphylla Emily Meigs Doe 2015-6-11 30 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.4 mi. NW of Forbestown. Downslope to the north of Forest Service rd. 19N19, approx. 0.65 mi. (air) NE of its intersection with Ponderosa Way. 701 Comment
  CHSC94168  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  UC474252  Pyrola picta H. F. Copeland 1930-7-26 Butte Jonesville Comment
  SEINET10973481  Pyrola picta Mary Susan Taylor 1980-8-2 Taylor 3200 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CDA38857  Pyrola picta subsp. dentata Vernon H. Oswald & Lowell Ahart 1998-8-11 9461 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  JEPS119748  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte North of Big Chico Creek, on the west side of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  HSC104019  Quercus X morehus L. Ahart 2012-3-23 17799 Butte About 5 air mi. NE of Chico, ~ 50 yds. W of Hwy. 32; on the south side of the Old Humboldt Road cut, north end of the Disc Golf Area 395 Comment
  CHSC92544  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  UC1135497  Quercus berberidifolia C. G. Albertus 1933-6-28 36 Butte 1.25 mi e Keefer's Old Mill; Chico Quad. 213 Comment
  UCD169920  Quercus berberidifolia L. P. Janeway 2008-6-15 9408 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  CDA35902  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Cherokee Rd & Thompson Flat Rd. 73 Comment
  CAS-BOT-BC86115  Quercus dumosa A. A. Heller 1916-9-8 12649 Butte Ten mile house E of Chico Comment
  CHSC33391  Quercus garryana var. breweri Lynette Wood 1979-4-25 Butte S of Paradise, ca 1 mi from junction with Neal Road, along Skyway. 414 Comment
  CHSC96361  Quercus garryana var. breweri L. P. Janeway; B. Castro 2007-5-6 8976 Butte Northern High Sierra Nevada. Slopes above the east side of West Branch Feather River; along Jordan Hill Road 1.0 km north-northeast of the bridge crossing; 1.9 air km north-northwest of Sawmill Peak. 555 Comment
  UC1135617  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-28 98 Butte 2 mi e Keefer's Old Mill; Chico Quad. 365 Comment
  UC600523  Quercus kelloggii H. F. Copeland 1920-7-26 171 Butte Jonesville Comment
  CHSC20122  Quercus lobata M. S. Taylor 1975-5-6 558 Butte Along s side of Big Chico Creek, ca. 50 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC77341  Quercus lobata L. P. Janeway 2000-3-29 6648 Butte Sacramento Valley. At edge of River Road 0.5 mi south of Hwy 32; near Pine Creek. Along fenceline between road and orchard. 43 Comment
  CHSC48386  Quercus vacciniifolia Vernon Oswald 1987-5-21 2917 Butte East of Jonesville on the road connecting Humboldt and Humbug Rds, 1.6 mi w of Scotts John Creek. 1706 Comment
  SEINET13954004 Image available Quercus vacciniifolia A. A. Heller 1915-1 11957 Butte Little Summit in the Sierra Nevada, in the yellow pine belt, elevation about 4500 feet, on open gravelly slopes about rocks in granite. 1372 Comment
  CAS-BOT-BC104689  Quercus wislizeni A. A. Heller 1913-4-6 10716 Butte Hills near Big Chico creek, E of Chico Comment
  UC5708  Quercus wislizeni W. H. Brewer 1862-10-17 1472 Butte Table Mountain, Oroville Comment
  CHSC110971  Quercus wislizeni var. wislizeni Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18272 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. 71 Comment
  JEPS110548  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC41523  Ranunculus alismifolius var. alismellus Kirsten Tarp 1983-8-27 361 Butte NE part of county n of Philbrook Reservoir at Coon Hollow. At margin of meadow. 1706 Comment
  CHSC97403  Ranunculus alismifolius var. alismellus Robert Fischer 2006-6-11 1009 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of the Humboldt Road junction. UTM: 10634233E, 4441779N. 1752 Comment
  CAS-BOT-BC379413  Ranunculus alismifolius var. alismellus H. F. Copeland 1920-7-11 67 Butte Scotch John Meadows 1829 Comment
  CHSC113211  Ranunculus aquatilis var. aquatilis Lowell Ahart 2014-4-16 19370 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  POM196104  Ranunculus aquatilis var. capillaceus E. B. Copeland 1929-7-28 360 Butte Jonesville. 1500 Comment
  CDA3502  Ranunculus arvensis Sterling O. Mattoon 1971-4-24 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  UCD18745  Ranunculus canus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 38 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC84251  Ranunculus canus var. canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC46060  Ranunculus muricatus Kirsten Tarp 1983-4-9 267 Butte N of Butte College, in ditch. 91 Comment
  UCD96254  Ranunculus muricatus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Butte Irrigation District Canal, 4 miles north of Gridley near U.S. 99E. Comment
  UCD96844  Ranunculus occidentalis P. Thompson 1996-4-26 42 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  UCSB63943  Ranunculus occidentalis Copeland, John 1980-2-4 Butte T23N, R2E, Sec. 36, ne1/4 of ne1/4 of ne1/4 ca. 400 yards s of Honey Run Covered Bridge and old Honey Run Rd., ca. 5 miles ne of Skyway Rd. and Humbug Rd. intersection. Comment
  SEINET215121  Ranunculus occidentalis var. eisenii K. Corson 1969-4-6 7 Butte 10 mi E of Chicao on CA Hwy 32 Comment
  UC204960  Ranunculus orthorhynchus var. orthorhynchus A. A. Heller 1914-6-22 11491 Butte Chico Meadows Sierra Nevada 1219 Comment
  CHSC58269  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  RSA4436  Ranunculus uncinatus var. parviflorus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  JEPS115273  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  RSA754884  Rhamnus ilicifolia L. Ahart 2009-6-30 15963 Butte S of a small drainage, along Guardian Rock Trail, about 5/8 air miles SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 386 Comment
  RSA518961  Rhamnus purshiana C. R. Quick 1952-6-29 5192 Butte Near spring, 0.3 miles W of Coyote Gap on Mill Creek road Comment
  CHSC27199  Rhaphiolepis indica P. Moyer 1971-2-1 85 Butte CSUC Campus. S face of Bus.-Soc. Sci. Bldg. 60 Comment
  UC2026886  Rhododendron Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  JEPS98684  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  RSA718500  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Large soggy meadow opening along an upper Western branch of Keyser Creek; 0.7 km. southeast of Bald Mountain summit. 1681 Comment
  UC478513  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow Jonesville 1800 Comment
  CAS-BOT-BC212669  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  SEINET10970390  Ribes roezlii Mary Susan Taylor 1975-4-25 Taylor 496 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  JEPS108155  Romulea rosea var. australis Rod Lacey 2005-3-28 Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. Ruderal Valley Grassland 54 Comment
  CAS-BOT-BC74458  Rorippa curvisiliqua Lowell Ahart 1980-8-16 2582 Butte Near Honcut. 60 Comment
  CHSC113160  Rorippa curvisiliqua Lowell Ahart 2013-11-17 19261 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC76413  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1999-10-28 8298 Butte On the bottom of a wash, just southeast of the small pond where you can park, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC85157  Rorippa curvisiliqua var. occidentalis John Dittes 2003-10-8 846 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC36685  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-21 347 A Butte At roadside; ca. 1/4 mi se of Philbrook Reservoir. 1706 Comment
  CHSC96825  Rorippa curvisiliqua var. orientalis Lowell Ahart 2007-5-29 13934 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CHSC12111  Rorippa nasturtium-aquaticum J. M. Pitts 1972-4-16 127 Butte In creek 80 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC35750  Rorippa nasturtium-aquaticum R. E. Preston 1982-5-19 288 Butte In stream at edge of meadow; ca. 1/4 mi n of Fall River Campground. 1028 Comment
  CHSC50339  Rosa bridgesii Vernon Oswald 1990-5-14 4215 Butte Dirt road to the marsh on the west branch of Brush Creek, 0.3 mile east of Bald Rock Rd, ca. 0.75 mile south of the town of Brush Creek. 1033 Comment
  CHSC82478  Rosa bridgesii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9742 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  SEINET10483514  Rosa gymnocarpa Mary Susan Taylor 1980-5-27 Taylor 2733 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  CHSC116712  Rosa pisocarpa subsp. ahartii Lowell Ahart 2016-5-15 20834 Butte On very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CAS-BOT-BC274231  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  UCD92292  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Butte County. Comment
  JEPS120765  Rotala ramosior Lowell Ahart 2013-9-20 19059 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  RSA719540  Rubus discolor Michael A. Vincent, K. Levings 2006-7-29 12886 Butte NE of Chico along Rte 32. Comment
  CDA3944  Rubus laciniatus L. Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. Comment
  CHSC45813  Rubus laciniatus L. P. Janeway 1987-6-5 2136 Butte Along French Cr Rd at Little Ram Cr 3.0 mi NE of OroQuincy Hwy and Stanwood Saddle. 838 Comment
  UC426912  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CAS-BOT-BC433198  Rubus pensilvanicus Peter H. Raven 1953-5-9 5449 Butte 6.5 miles from Bangor on road to Oroville Comment
  UCD166759  Rubus praecox Marcel Rejmanek 2016-10-6 2162 a Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  SEINET10483604  Rubus procerus Mary Susan Taylor 1980-6-7 Taylor 2792 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  CHSC113309  Rubus ursinus Lowell Ahart 2014-4-16 19365 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC26637  Rubus ursinus M. S. Taylor 1977-11-12 1538 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  SEINET10474887  Rudbeckia hirta var. pulcherrima Mary Susan Taylor 1978-7-21 Taylor 1831 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC64050  Rumex crispus S. C. Morey 1983-8-4 710 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC90930  Rumex crispus Lowell Ahart 2005-4-14 11717 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC1358  Rumex obtusifolius subsp. agrestis M. Anthony 1954-5-1 Butte A. Small's yard, Paradise. 640 Comment
  CDA42867  Rumex pulcher L. Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CHSC45579  Sagina apetala Lowell Ahart 1980-5-4 2215 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  JEPS122222  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CHSC33659  Sagina saginoides R. A. Schlising 1981-7-28 4172 Butte N of Inskip in NE part of county; near junction of creek from Coon Hollow and W Branch of N Fork of Feather River. In creekbed margin. 1328 Comment
  JEPS22785  Sagina saginoides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  UC935757  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13030 Butte Butte Sink; near big pond on Sacramento Outing Club Comment
  CHSC113972  Sagittaria montevidensis subsp. calycina Lowell Ahart 2014-10-14 19883 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  UCD150366  Sagittaria montevidensis subsp. calycina William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  UCD110731  Salix alba M. Wiesendanger 1928-6-1 1339 Butte Introduction Station, Chico. Comment
  JEPS107367  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  RSA715886  Salix exigua L. Ahart 2005-4-2 11696 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  SEINET10965409  Salix exigua Mary Susan Taylor 1982-5-22 Taylor 4498 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  POM218987  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 Comment
  CHSC113289  Salix gooddingii Lowell Ahart 2014-4-9 19346 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  HSC102781  Salix gooddingii L. Ahart 2012-4-20 17893 Butte About 9 air miles NE of Chico, ~0.6 mi. west of Hwy. 32; ~100 yds. south of the intersection of South Rim Trail and Ten Mile House Road, ~50 yds. SW of table at old homestead; on east side of dam, east of South Rim Trail. 259 Comment
  HSC103912  Salix gooddingii L. Ahart 2012-4-3 17803 Butte About 12 mi. SE of Oroville; Peter Ahart Ranch: ~1.25 mi. N and 2.75 mi. E of Honcut; north bank of North Honcut Creek 39 Comment
  JEPS119578  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  UC726400  Salix lasiandra subsp. lasiandra A. A. Heller 1919-5-17 13160 Butte Feather R. near Stirling; Feather R,. 975 Comment
  CHSC112108  Salix lasiolepis Lowell Ahart 2012-6-5 18169 Butte On the east side of the dam, at the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 298 Comment
  JEPS119574  Salix lasiolepis Lowell Ahart 2012-3-9 17772 -A Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CAS-BOT-BC129585  Salix lasiolepis var. lasiolepis A. A. Heller 1915-4-20 11858 Butte In the digger pine and oak belt, 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CAS-BOT-BC129622  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36776 Butte West Branch of North Fork Feather River near Jarbo Gap - Sierra Nevada Comment
  CHSC38670  Salix lucida subsp. lasiandra Vernon Oswald 1983-5-2 411 Butte Upper Bidwell Park, Chico, along the edge of Lindo Channel downstream from the flood-control gates. 79 Comment
  CAS-BOT-BC129506  Salix melanopsis C. C., Mrs. Bruce 1897-6-1 1806 Butte Gen. Bidwell's Comment
  UCR190831  Salvia sonomensis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC3773  Sambucus mexicana R. L. Adams 1964-4-12 75 Butte Found 1/4 mile S of junction of River road and highway 32 on E. side of road next to a barn. Comment
  CHSC77423  Sambucus mexicana Tim Stofer 1997-4-20 19 Butte This plant was located on the east side of the trail 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  RSA755771  Sambucus mexicana L. Ahart 2009-5-30 15807 Butte East side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 412 Comment
  SEINET10465318  Sambucus mexicana Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4254 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  SEINET5735621 Image available Sanguisorba minor Lowell Ahart 1985-1 4958 Butte E branch of Potter Ravine, ca. 2.25 mi N of Oroville Dam.; Oroville Dam 350 Comment
  CHSC32761  Sanicula bipinnata J. D. Jokerst 1981-4-10 1292 Butte Top of North Table Mt, W edge, N of and adjacent to Beatson Hollow. 335 Comment
  CHSC8623  Sanicula bipinnata D. Patten 1968-3-4 59 Butte Collected 1 1/2 mi. se of Chico along Skyway. 91 Comment
  HSC66267  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte W end of county dump on N side of Neal Rd., about 1 mi. E of Hwy. 99, about 7 mi. S of Chico 76 Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 Comment
  CDA14057  Sanicula tuberosa G. F. Hrusa, T. D. Wilfred 1997-5-1 13704 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC32624  Sanicula tuberosa M. S. Taylor 1981-3-31 3463 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC38748  Sanicula tuberosa Vernon Oswald 1983-4-4 258 Butte Upper Bidwell Park, Chico, on the north rim ca. 50 ft e of the turn-around at the end of the North Rim Trail. 414 Comment
  POM219526  Sarcodes sanguinea John Copeland 1931-7-1 s.n. Butte Jonesville. 1550 Comment
  CDA25432  Saxifraga californica A. C. Browne 1951-3-27 Butte Richardson s Springs. 0 Comment
  SEINET13945271 Image available Scandix pecten-veneris Barbara Ertter, Lowell Ahart & Jeffrey L. Strachan 1980-1 3280 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville & Marysville. T17N R4E SEC 4, NE 1/4, elev ca 100 ft 30 Comment
  SEINET10472665  Schoenolirion album Mary Susan Taylor 1977-8-17 Taylor 1465 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CAS-BOT-BC111372  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-14 13031 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  UC1594609  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road); w of Biggs 30 Comment
  CAS-BOT-BC22406  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  CHSC56794  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-22 3066 Butte Upper canyon of Philbrook Creek, 0.7 mi west of the pass. 1889 Comment
  CHSC56799  Scirpus congdonii L. P. Janeway 1987-6-26 2291 Butte At Rag Dump, Fall Creek. 1173 Comment
  CHSC50319  Scleranthus annuus subsp. annuus Vernon Oswald; Lowell Ahart 1990-5-29 4265 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CHSC33234  Sclerolinon digynum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3785 Butte Meadow 0.1 mi s of Butte Meadows junct of Skyway and Humboldt Road. 1341 Comment
  CHSC44281  Scutellaria californica Vernon Oswald 1988-6-14 3382 Butte Jordan Hill Rd. 1.1 mi (odometer) n of Griffin Gulch. 688 Comment
  CHSC93861  Scutellaria californica Lowell Ahart 2006-6-9 12658 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  CHSC43688  Scutellaria siphocampyloides Vernon Oswald 1984-6-5 1254 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood control gate. 79 Comment
  CHSC38405  Sedella pumila Vernon Oswald 1983-4-18 342 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC3952  Sedella pumila E. P. Parreno 1967-4-3 Butte Tabletop Mt. Comment
  CHSC90598  Sedella pumila Lisa J. Newsum 1984-4-19 15 Butte Cohasset Rd., 1/2 mi s of Keefer Rd. and Cohasset Rd. jct., 10 1/2 mi ne of Chico. 91 Comment
  CHSC90984  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  CAS-BOT-BC415024  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville road, about 7 miles from Chico Comment
  CHSC116966  Sedum spathulifolium Matthew Forster 2013-4-25 Butte Along 14 Mile House Rd. 472 Comment
  CHSC87786  Sedum spathulifolium Paul Maslin 2004-4-15 16 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610128E 4409116N. 396 Comment
  CAS-BOT-BC59130  Sedum spathulifolium Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16313 Butte SE slope near PG&E Reservoir, Feather River Canyon. Comment
  RSA0081476  Sedum spathulifolium I. L. Wiggins, Dorothy Wiggins 1961-6-10 16313 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  SEINET12215938  Sedum spathulifolium Unknown 1972-1 7 Butte P.G.& E. stop, ca 1/2 mi N of Bear Creek where it flows into the N fork of the Feather River 183 Comment
  CHSC42010  Selaginella hansenii Lowell Ahart 1974-7-29 690 Butte Along the dirt road 100 yards east of Rocky Honcut Creek, along Swedes Flat Road, north-east of Bangor. 304 Comment
  JEPS79620  Selaginella hansenii Edward Lee 1951-10-9 Butte ca. 10.1 mi out of city limits Oroville (on Hwy. 24); N. Fork Feather River Comment
  UCD135989  Selaginella wallacei L. Ahart 1973-12-28 293 Butte Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut, about 12 miles south of Oroville, along North Honcut Creek. 45 Comment
  CDA13882  Senecio aronicoides G. F. Hrusa, T. D. Wilfred 1997-5-7 13741 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC213676  Senecio lewisrosei Lewis S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi. s. of Pulga, Canyon side 609 Comment
  UCD146246  Senecio sylvaticus Daniel S. Park 2010-4-10 15 Butte Table Mt. near creek. 339 Comment
  SEINET10839270  Senecio triangularis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5117 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  SEINET10473963  Senecio vulgaris Mary Susan Taylor 1975-3-25 Taylor 428 Butte Chico. Comment
  CDA31826  Sesbania punicea C. Owens 2010-7-28 s.n. Butte Edge of Feather River at River Bend Park, Oroville. 0 Comment
  CHSC6147  Setaria gracilis E. Parreno 1968-5-1 81 Butte Front lawn of house on nw corner of Ivy and W 2nd Sts., Chico. 59 Comment
  JEPS76247  Setaria gracilis W. L. Jepson 1939-8-17 19456 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
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Jun 29 2007
  CDA42938  Setaria pumila subsp. pumila L. Ahart 2012-10-2 18493 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC105952  Setaria viridis Lowell Ahart 2010-9-24 17237 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC109002  Sherardia arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte On the north side of the path,near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  SEINET10902558  Sherardia arvensis Mary Susan Taylor 1980-4-6 Taylor 2462 Butte T18N R5E c sec 22. On W side of La Porte Road, ca. 2 mi N of Bangor, in Foothill Woodland. With L. Ahart & J.D. Jokerst. 335 Comment
  SEINET5629718 Image available Sidalcea asprella A. A. Heller, H. E. Brown. 1902-1 5496 Butte Berry Canyon Comment
  CHSC24938  Sidalcea calycosa Kimberly J. Weir 1976-4-15 5 Butte Ca. 1 mi s of Big Chico Creek and 1.5 mi ene of Chico, 20 ft n of Humboldt Road. 60 Comment
  CHSC29724  Sidalcea calycosa J. D. Jokerst; T. B. Devine 1979-7-6 405 A Butte Top of North Table Mt, ca 100 m NW of the jct of the E edge of Table Mt and Cherokee Rd. Comment
  CHSC71181  Sidalcea calycosa subsp. calycosa Lowell Ahart 1998-6-3 7964 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS97960  Sidalcea diploscypha K. Andreasen 1998-6-30 277 Butte SW side of pond at end of Long Bar Rd., S side of Thermalito Diversion Pool Lake Lake Oroville State Recreation Area Comment
  CHSC45944  Sidalcea hartwegii Lowell Ahart 1972-4-18 87 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC725875  Sidalcea hartwegii A. A. Heller 1926-4-28 13934 Butte near Little Chico Creek; near Little Chico Creek Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  HSC85970  Sidalcea hirsuta J. Hunter 1986-4-12 45 Butte Vacant lot in Chico, 75 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  RSA21314  Sidalcea malviflora subsp. asprella Carl B. Wolf 1937-5-13 8659 Butte Sierra Nevada Foothills. 6.6 miles S. E. of Oroville on road to Wyandotte 122 Comment
  CHSC26797  Sidalcea oregana subsp. spicata M. S. Taylor 1977-7-15 1411 Butte On Ernie's Island in Butte Creek, at jct of Old Humboldt Rd and Butte Creek, near Butte Meadows, ca. 5 mi e of turnoff from Hwy 32. 1326 Comment
  CAS-BOT-BC174848  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City 1706 Comment
  CHSC39045  Silene bridgesii R. A. Schlising; K. Tarp 1983-7-22 4428 Butte E part of county, se of Brush Creek along Milsap Bar Road. 975 Comment
  UC455230  Silene californica Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC478524  Silene douglasii E. B. Copeland 1931-6-19 634 Butte near the Summit (Jonesville); Jonesville 2100 Comment
  SD1631  Silene douglasii var. monantha E. B. Copeland 1931-6-19 Butte Jonesville, near the Summit. 2100 Comment
  CHSC39296  Silene laciniata subsp. californica Lowell Ahart 1983-7-29 4253 Butte Found along the edge of the dirt road, about 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 900 Comment
  CAS-BOT-BC389009  Silene laciniata subsp. californica Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC38047  Sinapis arvensis R. E. Preston 1983-1-9 377 Butte At roadside; jct Aguas Frias Rd and Richvale Rd, ca. 6 mi w of Richvale. 26 Comment
  UC600565  Sisyrinchium bellum H. F. Copeland 1930-7-24 Butte Jonesville Comment
  SEINET10938455  Sisyrinchium bellum Mary Susan Taylor 1975-4-26 Taylor 508 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  UC600466  Smilacina racemosa E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC42428  Solanum americanum Lowell Ahart 1987-5-27 5687 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD126823  Solanum americanum L. E. Hazeltine 1916-7-25 Butte Chico. Comment
  CHSC109076  Solanum jasminoides Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17870 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  CHSC8621  Solanum parishii L. V. Ritter 1969-4-29 207 Butte 4.2 mi. se of Chico, s side of Humbug Rd. Comment
  CHSC43779  Solanum rostratum Vernon Oswald 1986-7-23 2223 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Roadside on the edge of vernal pond. 48 Comment
  POM173671  Solidago canadensis subsp. elongata H. F. Copeland 1927-9-4 962 Butte Jonesville. Comment
  CAS-BOT-BC365380  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Chico Meadows 1219 Comment
  UC426994  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CHSC39344  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC30040  Soliva sessilis L. Ahart 1980-5-17 2280 Butte Along the edges of a wash, ca. 1/8 mi s of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC43001  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CDA42842  Sonchus oleraceus L. Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10474014  Sonchus tenerrimus Lowell Ahart 1984-11-1 Ahart 4832 Butte On damp red soil in garden on Peter Ahart Ranch, ca. 1.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. 50 m elev. 50 Comment
  CHSC66465  Sorghum halepense Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .2 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET10594670  Sorghum halepense Isle 1969-5-20 ISLE 480 Butte 1st Avenue and Kentfield Drive, Chico. Johnson Grass. 195 Comment
  CHSC51955  Sparganium emersum subsp. emersum L. P. Janeway 1987-6-27 2350 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  CDA3448  Spergula arvensis subsp. arvensis L. Ahart 2000-5-23 8388 Butte About 100 yards southeast of the barn, about 1/4 mile northeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CHSC38304  Spergularia bocconi Vernon Oswald 1983-5-2 414 Butte Upper Bidwell Park, Chico, in Parking Area A at the w end of Upper Park Rd. 83 Comment
  CHSC46353  Spergularia bocconi Lowell Ahart 1989-5-23 6244 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC42678  Sphenosciadium capitellatum Vernon Oswald 1983-8-4 955 Butte Near Humboldt Rd. 3.5 mi NE of Butte Meadows. 1414 Comment
  CHSC6001  Spiraea M. MacArthur 1968-6-19 256 Butte SE side of Auditorium bld., Chico State College campus. 60 Comment
  SD2172  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville; at the Summit. 2100 Comment
  CHSC44532  Spiranthes porrifolia Lowell Ahart 1988-5-30 6032 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  JEPS105915  Spiranthes stellata Lowell Ahart 2004-8-2 11325 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CHSC92454  Sporobolus indicus Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. 34 Comment
  CAS-BOT-BC5599  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC39969  Stachys pycnantha L. Ahart; P. Ahart 1983-8-10 4268 Butte Along La Porte Rd, ca. 4 mi ne of Bangor. 350 Comment
  CHSC94616  Stachys pycnantha Lowell Ahart 2006-9-11 13286 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UCR51781  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte Butte Co. 287 Comment
  CHSC30073  Stellaria borealis subsp. sitchana R. A. Schlising; M. S. Taylor 1980-7-5 3831 Butte 0.3 mi S of road to Soda Springs Campground in NW part of county, along Hwy 32. Creekside of tributary to Big Chico Creek. 1121 Comment
  UC1562306  Stellaria calycantha Vernon Oswald and Lowell Ahart 1990-7-19 4369 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, ca 0.6 mi w of Plumas County line) 1981 Comment
  CHSC26847  Stellaria longifolia M. S. Taylor; M. Hayes 1978-6-24 1637 Butte On Ernies Island in Butte Creek at its jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC102515  Stellaria media Lowell Ahart 2009-5-30 15936 Butte South of trail on the east side of Big Chico Creek, about 50 yards west of Ten mile House Road, Upper Bidwell Park, about 3/4mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC45566  Stellaria nitens Lowell Ahart 1985-3-24 4862 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 518 Comment
  CHSC96226  Stellaria nitens R. Fischer 2006-4-25 973 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  JEPS122340  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC43197  Stephanomeria lactucina Robert Banchero 1981-6-29 544 Butte 1.7 air mi w of Pulga. 926 Comment
  UC392186  Stephanomeria lactucina E. B. Copeland July 1929 Butte Jonesville Comment
  CHSC62435  Stephanomeria paniculata L. P. Janeway 1993-9-22 4597 Butte Plumas National Forest. Canyon of North Fork Feather River; along dirt road to Bear Ranch Creek falls from Hwy 70. 487 Comment
  CHSC29806  Stephanomeria virgata subsp. pleurocarpa M. S. Taylor 1979-8-4 2173 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 457 Comment
  SEINET10508392  Stipa lemmonii Lowell Ahart 1983-6-15 Ahart 4054 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  SEINET10480711  Streptanthus Mary Susan Taylor 1981-5-21 Taylor 3791 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  SJSU8320  Streptanthus diversifolius J. B. Willis Jr. 1969-5-3 94 Butte near Cherokee Rd, 8 mi NE of Oroville Comment
  CHSC78132  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC39964  Streptanthus longisiliquus L. Ahart; P. Ahart 1983-6-30 4187 Butte Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. 1100 Comment
  CHSC33180  Streptanthus polygaloides R. E. Preston 1981-6-2 77 Butte Ca. 50 m n of Rim Rd., 5.3 km from its jct with Hwy 70 at Jarbo Gap, ca. 32 km n of Oroville. 854 Comment
  CHSC553  Streptanthus polygaloides 1954-5-30 Butte Rag Dump 5, near Stirling. 1127 Comment
  CHSC36696  Streptanthus tortuosus R. E. Preston 1981-6-16 88 Butte Ca. 10.5 mi ne of Paradise. 1127 Comment
  CHSC38020  Streptanthus tortuosus R. A. Schlising 1982-8-1 4366 Butte E of Stirling City at Table Mountain; at N end of mountain. 1859 Comment
  CHSC95097  Streptopus amplexifolius var. americanus L. P. Janeway 2006-8-6 8833 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  SEINET10449572  Styrax officinalis var. californicus Mary Susan Taylor 1976-5-5 Taylor 1122 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC46985  Suaeda calceoliformis Vernon Oswald 1989-6-26 3816 Butte West Liberty Rd along north boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. Ditches and roadside drainages. 198 Comment
  RSA500420  Subularia aquatica var. americana Vernon H. Oswald, L. Ahart 1989-8-22 3953 Butte Summit Lake on the N slope of Snow Mountain, ca. 4 miles (air) SE of Jonesville. 1890 Comment
  CHSC47408  Swertia albicaulis var. nitida Lowell Ahart 1979-5-29 1902 Butte Along the edges of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  UCSB13228  Swertia albicaulis var. nitida Dearing, Hugh; Dearing, Margaret 1938-6-21 Butte 21 mi. N. of Chico; nr. Lone Pine Lookout; Butte Co., Calif 1219 Comment
  SD4985  Symphoricarpos acutus E. B. Copeland 1930-7-7 Butte Jonesville. 1600 Comment
  CHSC101122  Symphoricarpos albus var. laevigatus Lowell Ahart 2009-5-23 15731 Butte On the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC234614  Symphoricarpos mollis E. B. Copeland 1930-7-7 s.n. Butte Jonesville 1600 Comment
  CHSC40562  Symphyotrichum chilense Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  UC600726  Symphyotrichum foliaceum H. F. Copeland 1932-8-16 Butte Butte Creek (woods by) Jonesville 1500 Comment
  CHSC28785  Symphyotrichum subulatum var. parviflorum J. D. Jokerst 1979-9-8 341 Butte S of Afton at crossing with Angel Cr., ca 4.0 mi N of Road 61. Comment
  JEPS120944  Tamarix parviflora Lowell Ahart 2013-4-20 18547 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CDA13257  Tanacetum parthenium G. F. Hrusa, T. D. Wilfred 1996-7-9 13108 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC19940  Taraxacum officinale M. S. Taylor 1975-3-25 430 Butte Abundant at 1456 Arcadian, Chico. Comment
  CHSC428  Taraxacum officinale B. Richardson 1929-4-8 Butte Chico. 57 Comment
  UCR7828  Taxus brevifolia Wm. Horn Jr. 1964-6-24 640624- 01 Butte 9 mi east of De Sabla 1159 Comment
  CAS-BOT-BC445891  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Mosquito creek between Appleton and Coutelence. Comment
  CAS-BOT-BC77718  Thelypteris nevadensis M. S. Taylor 1981-5-21 3782 Butte Jct of Camp Creek, ca. 4 mi n of Pulga on Feather River hwy 70 1005 Comment
  UC2026892  Thuja Lowell Ahart, Josephine Guardino, Tyron Chang 2012-10-12 18478 Butte Just east of the sign Orient Street and E 1st Street, on the south side of Annie's Glen, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC88225  Thysanocarpus curvipes John Thomas Howell 1976-4-1 51534 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 304 Comment
  UC74950  Thysanocarpus curvipes Copeland 1903-4-10 3031 Butte Chico Comment
  CHSC24965  Thysanocarpus curvipes var. curvipes J. Cox 1976-3-10 45 Butte N Table Mt. Ca 300 yds n of Cherokee Rd, 4.3 mi ne of Oroville. 426 Comment
  CHSC93487  Thysanocarpus curvipes var. elegans Lowell Ahart 2006-5-8 12608 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  RSA0057358  Thysanocarpus radians C. C. Bruce 1897-06 1947 Butte Unspecified. Comment
  SEINET10448535  Thysanocarpus radians Mary Susan Taylor 1980-4-6 Taylor 2452 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jo