Search Results — 2000 specimen records retrieved (1607 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  POM220655  Abies concolor H. F. Copeland 1928-8-20 201 Butte Jonesville. 1524 Comment
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. Comment
  CHSC104010  Acanthus mollis Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16746 Butte On the west side of Cedar Grove, about 150 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  CHSC5956  Acanthus mollis M. MacArthur 1968-6-17 196 Butte Ca. 60 ft. NW of Biology Stockroom, Chico State College campus. 60 Comment
  NY43528  Acer circinatum S. Bianco 1995-9-17 1026 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  RSA0115090  Acer circinatum Tim Hanson 2013-6-24 11 Butte Northern Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. 902 Comment
  SEINET10453987  Acer circinatum Mary Susan Taylor 1981-5-21 Taylor 3789 Butte T23N R5E ne sec 28, Pulga quad. In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. Granite soils in shaded filtered light; Yellow Pine Forest; 1600 ft. 488 Comment
  OBI69216  Acer negundo Kari Fisher 2000-11-10 47 Butte Chico State Campus, along Big Chico Crk 79 Comment
  CHSC27204  Acer palmatum P. Moyer 1971-10-8 43 Butte CSUC Campus. Front lawn Admin. Bldg. 60 Comment
  UC2026885  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC21702  Achillea millefolium Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC21748  Achillea millefolium Lowell Ahart 1985-5-15 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC248  Achillea millefolium R. M. Staley 1952-6-28 Butte W. Branch Feather River Comment
  CHSC38315  Achillea millefolium Vernon Oswald 1983-5-14 483 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC95214  Achillea millefolium R. D. Fischer 2004-5-2 801 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Guardian Trail between the Pine and Bloodypin Trails. 335 Comment
  CHSC57164  Achnatherum lemmonii J. D. Jokerst 1980-4-18 Butte Edge of Nimshew Road, 1.0 mi south of town of Nimshew. Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CAS-BOT-BC218045  Achnatherum stillmanii Lowell Ahart 1980-6-22 2446 Butte 1 mile NE of Woodleaf 1000 Comment
  CHSC31120  Achyrachaena mollis Roberta A. Boer 1980-4-25 17 Butte Ca. 1/4 mi n of Humboldt Rd. and 1.5 mi e of the jct of Hwy 32 and Hwy 99, ca. 2.0 mi e of Chico. 131 Comment
  HSC104010  Acmispon americanus var. americanus L. Ahart 2013-11-18 19282 Butte About 2.5 air mi. NE of Hurleton, below the high water line of Lake Oroville, ~150 yds. NE of the boat ramp at the end of Stringtown Rd.,~ 50 yds. north of the road 261 Comment
  JEPS122339  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19726 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  SD239731  Acmispon americanus var. americanus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley: Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi WSW (261a^z) of Honcut, 6.6 miles SE (116a^z) of Gridley (Honcut 7.5'Q) 27 Comment
  UCD103808  Acmispon americanus var. americanus A. A. Heller 1916-9-8 12651 Butte Ten mile house east of Chico. Comment
  CHSC78249  Acmispon argophyllus var. fremontii Lowell Ahart 2000-6-27 8516 Butte Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC39345  Acmispon glaber Lowell Ahart 1983-6-26 4147 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. The sign gives Big Ridge Road insead of Ponderosa Way. 575 Comment
  CHSC33118  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W side of spur rd, ca. 1/2 mi n of its jct with 21N35Y - Bryant Ravine Rd, ca. 1 air mi n of Feather Falls community. 853 Comment
  CHSC6600  Acmispon grandiflorus var. macranthus G. Estrem 1968-4-23 2 Butte Ca. 20 mi e of Oroville on hwy. 70. Ca. 100 yds. s of road on n facing slope. Comment
  HSC23345  Acmispon micranthus R. N. Bowman 1971-4-16 11 Butte 11.7 mi. E of Hwy. 70 on Pentz Rd. 91 Comment
  CHSC112732  Acmispon nevadensis var. nevadensis Lowell Ahart 2013-11-17 19269 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
  CHSC85742  Acmispon nevadensis var. nevadensis G. F. Hrusa; T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada-Plumas National Forest. On USFS 22N80 overlooking drainages of Marble Creek and Jordan ck to N. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1300 Comment
  CHSC31099  Acmispon parviflorus Diane M. Reilly 1980-4-19 16 Butte Under power lines. Ca. 1/4 mi sw off Big Bend Rd., ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  JEPS122079  Aconitum columbianum subsp. columbianum Lowell Ahart 2014-7-13 19652 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CHSC33235  Aconogonon phytolaccifolium R. A. Schlising 1980-9-6 3987 Butte NE of Oroville and NE of Feather Falls, near Fall River Campground and Fall River crossing of USFS road. Comment
  CHSC11851  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville. 1500 Comment
  CHSC34680  Adiantum capillus-veneris M. S. Taylor 1980-2-17 2364 Butte Along a creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC27785  Adiantum jordanii Bruce Hamren 1978-4-24 10 Butte West Branch of Feather River. 280 Comment
  SEINET7728134  Adiantum pedatum Unknown 1883-1 Butte Chico Comment
  CDA19905  Aegilops triuncialis D. Nay, R. Hill 2002-5-25 PDR 009406 Butte Northern California; Vicinity of Oroville. 0 Comment
  CDA19906  Aegilops triuncialis R. Hill 2002-5-3 PDR 009409 Butte Northern California; Vicinity of Oroville. 0 Comment
  CHSC28465  Aegilops triuncialis R. A. Schlising 1979-5-30 3427 Butte Richvale Vernal Pools, south of jct of Hwy 162-to-Oroville and Hwy 99, along latter across from Thermalito Afterbay. Comment
  CHSC65887  Agoseris heterophylla Vernon Oswald 1996-4-20 7402 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. 32 Comment
  CDA14067  Agoseris retrorsa G. F. Hrusa, T. D. Wilfred 1997-5-1 13715 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC45746  Agrimonia gryposepala L. P. Janeway 1988-7-2 2958 Butte Along rd to Coyote Gap 2.6 mi from bridge on French Creek. 982 Comment
  SEINET10846779  Agrostis avenacea Lowell Ahart 1990-5-25 Ahart 6492 Butte Below the high water line of Lake Oroville, E of the Enterprise Boat Launch Area. About 1/8 mile NW of the Enterprise Bridge across Lake Orovilla. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  JEPS98367  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte 13 air miles NE of Oroville (N side of Bean Creek Road, about 1/4 mi SE of Little Bald Rock, 1 1/4 mi NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CHSC94554  Agrostis exarata Lowell Ahart 2006-9-11 13301 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
  SEINET10507085  Agrostis exigua Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4166 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  SEINET10507086  Agrostis exigua Lowell Ahart, L. Hanson 1985-5-20 Ahart 5028 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  JEPS98366  Agrostis hendersonii Lowell Ahart 2000-6-27 8515 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  CHSC59035  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  UC1594733  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte small stream about 1/2 mi n Carr Mine (s side of hollow, about 2 (air) mi s of Snow Mountain); Coon Hollow 1737 Comment
  UC600600  Agrostis scabra E. B. Copeland Jul 1929 Butte woods across Jones creek Jonesville 1550 Comment
  SEINET10790393  Agrostis stolonifera Mary Susan Taylor 1978-7-21 Taylor 1796 Butte Vicinity of Lake Madrone at Oroville-Quincy Hwy turnoff, 10 mi NE of Oroville; Yellow Pine forest. Comment
  SACT000179  Aira caespitosa Herbert Copeland 1930-7-25 Butte Tall clumps, in meadow below cabin Comment
  CAS-BOT-BC138421  Aira caryophyllea Lowell Ahart 1983-4-1 3913 Butte Sierra Nevada. Along edge of old Highway 40, near the end of the road where it runs into Lake Oroville, ca. 4 miles south of Jarbo Gap. 350 Comment
  CHSC118445  Aira caryophyllea L. P. Janeway 2016-5-9 11952 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Pondosa Way and Road 19N19. 701 Comment
  CHSC31712  Aira caryophyllea L. Ahart 1975-5-12 773 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS114957  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte below the high water line of Lake Oroville, on the E side of Sucker Creek, about 40 yds N of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi W of the Ponderosa Dam 258 Comment
  CAS-BOT-BC138411  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2191 Butte Near Hurleton. 600 Comment
  CHSC30549  Aira elegans J. D. Jokerst; M. S. Taylor, L. Ahart 1980-4-7 559 Butte NE of the jct of Upper Rocky Honcut Cr and Swedes Flat Rd (10 mi SE of Oroville). Comment
  CHSC33669  Alisma lanceolatum L. Ahart 1981-5-25 2838 Butte Bottom of a deep wash, on Peter Ahart Ranch, ca. 2 mi n and 1/15 mi e of Honcut. 50 Comment
  CHSC29976  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut. 50 Comment
  UCD138474  Allium amplectens H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  SEINET8533641 Image available Allium amplectens H. E. Brown 1897-1 172 Butte Near Clear Creek Comment
  SEINET10472029  Allium bolanderi Mary Susan Taylor 1982-5-2 Taylor 4391 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC45098  Allium cratericola R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yards W of road. 419 Comment
  CHSC102188  Allium jepsonii George W. Hartwell 2009-6-30 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 858 Comment
  UCD138550  Allium jepsonii B. Castro; Plumas NF botanists 1994-6-28 515 Butte ca. 0.4 mile south of Pulga, west side of Pulga Road, ca. 0.4 mile north of its junction with Hwy 70 by the Pulga Brige. 487 Comment
  CHSC96417  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CAS-BOT-BC132071  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. Se. of Oroville on road to Wyandotte 121 Comment
  CAS-BOT-BC132115  Allium sanbornii var. sanbornii Lowell Ahart 1980-7-29 2501 Butte Along the edge of Forbestown Road 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
  SEINET10496943  Allophyllum divaricatum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4258 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC35100  Allophyllum integrifolium R. A. Schlising 1980-7-16 3911 Butte NE of Butte Meadows and SW of Jonesville, near Cherry Hill Campground. At Butte Creek streamside. Comment
  CHSC35101  Allophyllum integrifolium R. A. Schlising; R. Banchero, M. Merryman, J. Fuller 1981-6-20 4096 Butte About 10 miles E of Inskip, NE of Jones Meadows. Bank and roadside. 1877 Comment
  UC1562329  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1990-6-27 4328 Butte 0.3 mi. w.-n.w. Buckeye (site) (Oro-Quincy Hwy. at s. edge of Walker Plains) 1536 Comment
  CHSC31577  Alnus rhombifolia L. Ahart 1976-1-22 998 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46714  Alopecurus aequalis V. Oswald; L. Ahart 1989-8-22 3957 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  JEPS107324  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET10661091  Alopecurus carolinianus Lowell Ahart 2008-5-2 Ahart 14704 Butte T19N, R5E, northeast 1/4 Section 1. Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10.5 miles (air) northeast of Oroville. 217 Comment
  SEINET227296  Alopecurus carolinianus Lowell Ahart 1982-5-10 3430 Butte Peter Ahart Ranch ca 2 mi NE of Honcut 50 Comment
  CHSC54374  Alopecurus saccatus M. Bailey 1991-3-29 555 Butte Butte College campus. Ca 200 feet s of Wallis Pond e of Williams Road and ca 1/4 mi n of Pentz Road. 85 Comment
  HSC95373  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte N Table Mt., 7 mi. N of Oroville, 1.75 mi. W of iron gate and fence, W of Cherokee Rd. 272 Comment
  JEPS98447  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  RSA768997  Alopecurus saccatus L. Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 372 Comment
  SEINET10511200  Alopecurus saccatus Lowell Ahart 1982-5-10 Ahart 3429 Butte Ca. 2 mi ne of Honcut. Valley Grassland. 50 Comment
  CHSC30384  Amaranthus albus J. D. Jokerst 1980-5-28 804 Butte Top of Table Mt., sides of Cherokee Rd at the east end of the Mt. Comment
  JEPS127068  Amaranthus albus Lowell Ahart 2016-5-30 20892 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  UCSB64011  Amaranthus albus Ahart, Lowell 1982-7-10 Butte About 1/4 miles south-east of the Gray Lodge Headquarters, about 12 miles south-west of Gridley, Butte County, California 30 Comment
  SEINET8204407  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC21135  Amaranthus blitoides M. S. Taylor 1975-10-3 932 Butte On roadsides at bridge over Little Chico Creek on River Rd., ca. 10 mi w of Chico. 36 Comment
  CHSC113539  Amaranthus californicus Lowell Ahart 2014-9-23 19880 Butte Near a small drainage, 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. 88 Comment
  CHSC50986  Amaranthus californicus Lowell Ahart 1990-8-15 6577 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. 243 Comment
  JEPS122252  Amaranthus californicus Lowell Ahart 2014-9-23 19880 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. Comment
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  UC1609225  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road) 48 Comment
  CDA3281  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. Comment
  UCD97762  Amaranthus retroflexus John Thomas Howell 1959-9-20 34699 Butte 9 miles NE of Oroville on Feather River Highway. Comment
  CHSC50790  Ambrosia artemisiifolia Vernon H. Oswald; Lowell Ahart 1990-7-31 4425 Butte Camelot Estates Subdivision on the north side of Concow Reservoir. 621 Comment
  CDA34620  Ambrosia psilostachya L. 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. Comment
  CAS-BOT-BC142949  Amelanchier utahensis H. F. Copeland 1929-6-10 1208 Butte Jonesville 1524 Comment
  CDA36699  Ammannia coccinea Margaret Bellue 1947-8-23 Butte Afton Road near Biggs. 0 Comment
  UC1191591  Ammannia robusta Herbert L. Mason and Verne Grant 1945-7-10 12633 Butte n. of Marysville Butte (along Butte Creek, Grey Lodge Game Refuge - southern); Grey Lodge Game Refuge, Butte Creek Comment
  CHSC46818  Amsinckia eastwoodiae R. A. Schlising 1985-4-8 4461 Butte West of Table Mt., along Table Mt. Blvd., NW of crossing of Campbell Creek. Comment
  CHSC3544  Amsinckia intermedia John Francis 1966-3-14 60 Butte 1/4 mile E. of intersection of Esplanade and Cohasset Rd. on Cohasset Rd., Chico. Comment
  CHSC3572  Amsinckia intermedia R. D. Briggs 1966-3-2 49 Butte Salmon Hole', 4 miles above the Bidwell Park golf course. 106 Comment
  UC1191045  Amsinckia intermedia Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 682 Butte near bridge on West Branch of Feather River (on Nelson Bar Road) Comment
  UCD169393  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte North of Spruce Street, Gridley; east of the railroad tracks. 28 Comment
  RSA33142  Amsinckia intermedia A. A. Heller 1941-4-19 16067 Butte Edge of a field on the road to Bidwell Park, north side of sandy gulch or Lindo Channel. Comment
  CHSC60662  Amsinckia lycopsoides Vernon H. Oswald 1993-4-24 5295 Butte Gray Lodge Wildlife Manegement Area, 0.1 mi N of Rutherford Rd in levee raod leading to Parking Lots 1, 2, and 3, ca. 0.5 mi E of Headquarters. 19 Comment
  JEPS119535  Amsinckia lycopsoides Lowell Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  NY622098  Amsinckia nitidicaulis A. A. Heller 1918-4-10 12982 Butte At Chico; especially plentiful as a weed about the high school Comment
  SEINET10449591  Anagallis arvensis Mary Susan Taylor 1975-4-26 Taylor 517 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
  CHSC40550  Ancistrocarphus filagineus Ahart-Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  POM57372  Ancistrocarphus filagineus A. A. Heller, H. E. Brown 1902-5-12 s.n. Butte Grade between Clear Creek and Paradise. Comment
  SEINET3918327  Andropogon virginicus Elden F. Azevedo 1952-10-8 s.n. Butte Oroville.; 0 Comment
  CAS-BOT-BC137803  Andropogon virginicus var. virginicus Bellue 1942-3-17 s.n. Butte About 2 miles east of Oroville. Thermalitos. Comment
  CDA40897  Angelica breweri G. F. Hrusa, T. D. Wilfred 1996-7-9 13184 Butte Sierra Nevada; on USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Sheet 2 of 2 Comment
  CHSC40894  Angelica breweri Lowell Ahart 1985-7-24 5151 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC107264  Anisocarpus madioides L. P. Janeway 2011-6-27 10403 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 830 m east-northeast of the top. 732 Comment
  JEPS103530  Anisocarpus madioides Lowell Ahart 2002-6-21 9746 Butte On the N side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1158 Comment
  UCD129052  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte near Durham. Comment
  CHSC1951  Anthriscus caucalis A. Goekler 1929-4-25 Butte Chico. 57 Comment
  SEINET10547815  Antirrhinum breweri Mary Susan Taylor 1981-6-19 Taylor 3958 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
  CHSC39014  Antirrhinum vexillo-calyculatum subsp. intermedium J. D. Jokerst 1983-6-21 1816 Butte Top of North Table Mt at its west edge, top of escarpment edge at the morth edge of Coal Cr Canyon. 304 Comment
  CHSC42964  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1987-7-3 5787 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  CHSC12928  Aphyllon purpureum K. D. Cox 1974-4-15 187 Butte Horse Trough, about 2 mi. N of Chico Airport, on Cohasset Rd. On roadside bank. Comment
  CAS-BOT-BC218520  Apiaceae Saichi Kawahara 1968-5-4 362 Butte Ordbend-Durham Road 2 miles south of Ord Ferry east bank of Sacramento River at turn in road. 30 Comment
  CHSC104  Apocynum androsaemifolium 1954-5-30 Butte Kimshew Falls near Rag Dump 5, out from Stirling. 1097 Comment
  CHSC20487  Apocynum androsaemifolium M. S. Taylor 1975-6-30 812 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  JEPS108968  Apocynum cannabinum Lowell Ahart 2006-9-11 13272 Butte Gravel bar, south side 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
  POM75789  Apocynum cannabinum C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  CAS-BOT-BC392106  Aquilegia formosa Lowell Ahart 1984-6-10 4703 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC27919  Aquilegia formosa var. truncata M. S. Taylor 1978-7-18 1718 Butte On top of Humboldt Peak at Humboldt Summit, on Butte Co and Tehama Co line. 2158 Comment
  SEINET10454396  Aralia californica Mary Susan Taylor 1979-10-5 Taylor 2227 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  SEINET7258049  Arbutus menziesii M. J. Williams 1967-4-15 s.n. Butte Feather River Highway 671 Comment
  POM354297  Arceuthobium campylopodum E. B. Copeland 1928-8-18 759 Butte Neighborhood of Jonesville. Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA632993  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27452 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  OBI69253  Arctostaphylos manzanita subsp. manzanita Kari Fisher, Bill Fisher 2000-11-11 57 Butte Bidwell Park, along Chico Creek, close to golf course. 84 Comment
  RSA31997  Arctostaphylos mewukka A. A. Heller 1942-1-4 16344 Butte 5 miles below paradise on the Pentz-Magalia Road. Comment
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Dec 14 2009
  SD49827  Arctostaphylos patula C. G. Albertus 1933-7-25 47 Butte Chico Quadrangle, just S of Thompson's 1280 Comment
  CHSC588  Arctostaphylos patula subsp. patula L. Stone 1930-4-6 Butte Between Butte Meadows and Jonesville. 1280 Comment
  CHSC67932  Arctostaphylos truei James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1683 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  SEINET10973472  Arctostaphylos viscida Mary Susan Taylor 1981-3-31 Taylor 3456 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CAS-BOT-BC48293  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51106 Butte Billie Road at Cliff Drive, Paradise 609 Comment
  CHSC38436  Arctostaphylos viscida subsp. viscida Vernon Oswald 1983-2-14 70 Butte Upper Bidwell Park, Chico, on the S side of Upper Park Rd. just e of the intermittent stream located 0.8 mi E of the power lines. 115 Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  CAS-BOT-BC137556  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte Between Pentz and Dry Creek. Hills 8 miles north of Oroville. Comment
  SEINET3919495  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte 3.5 miles east of Honcut along La Porte road.; 0 Comment
  CAS-BOT-BC400430  Aristolochia californica John Thomas Howell 1951-6-26 27526 Butte Near Pulga 411 Comment
  HSC86841  Aristolochia californica L. P. Branham 1975-4-3 6 Butte 10 m S of Humbug Rd., .2 mi. E of junction of Honey Run Rd. and Humbug Rd., 7 mi. SE of Chico 110 Comment
  RSA20867  Aristolochia californica C. B. Wolf 1937-3-29 s.n. Butte Sacramento Valley, 2 mi S of Chico. 58 Comment
  UC1562316  Arnica Vernon Oswald and Lowell Ahart 1990-6-27 4333 Butte 1.4 mi nw of, between Four Trees and Coyote Gap Four Trees Rd. 1475 Comment
  CAS-BOT-BC295833  Arnica dealbata E. B. Copeland 1929-7-18 s.n. Butte Jonesville 1550 Comment
  CHSC11850  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville. Open Pine Woods. 1600 Comment
  CHSC42852  Arrhenatherum elatius Lowell Ahart 1987-5-27 5719 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  UCR208054  Arrhenatherum elatius Paul Maslin 2004-5-21 0034 Butte Sierra Nevada Mtns., west of Hwy 32 between Chico and Forest ranch within Big Chico Creek Ecological Reserve (BCCER) 488 Comment
  RSA32828  Asarum hartwegii A. A. Heller 1939-4-10 s.n. Butte Shaded places in leafy mold on a slope in the oak belt of the transition zone near its lower limits Comment
  SEINET10475947  Asarum hartwegii Mary Susan Taylor 1978-7-21 Taylor 1805 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CHSC91262  Asarum lemmonii L. P. Janeway; David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump. 1134 Comment
  CHSC11078  Asclepias cordifolia Lowell Ahart 1968-4-20 Butte Two miles N.E. of Honcut. 60 Comment
  CHSC115447  Asclepias cordifolia M. Sutton; K. Schierenbeck 2013-5-5 46 Butte Deer Creek. 657 Comment
  SFV2799  Asclepias cordifolia M. L. Vincent 1962-4-19 212 Butte Sierra Nevada Humbug Road, 3 miles northeast of Centerville. 425 Comment
  UC600679  Asclepias cordifolia H. F. Copeland 1932-7-26 Butte rocky peak above Jonesville Inn; Jonesville Comment
  UC1123539  Asclepias fascicularis A. E. Wieslander 1933-10-12 345 Butte Durham Chico Quadrangle Comment
  CHSC38265  Asclepias speciosa Vernon Oswald. 1983-6-14 682 Butte Upper Bidwell Park, Chico, 100 ft. e of the turn-around at the e end of Upper Park Rd. 207 Comment
  SEINET10529843  Aspidotis californica Mary Susan Taylor 1976-4-24 Taylor 1073 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  SEINET10529844  Aspidotis californica Mary Susan Taylor 1976-3-6 Taylor 1008 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC43599  Aster radulinus Vernon H. Oswald 1986-8-7 2276 Butte Northeast edge of Paradise Lake, ca. 1 mi N of the picnic area. 780 Comment
  JEPS119766  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  SEINET10452223  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-5-10 Ahart 4940 Butte Eastern Table Mountain area in gulchlands, about 8 miles north of Oroville. Comment
  SEINET10452224  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4851 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC59315  Astragalus pauperculus J. L. Guardino 1992-3-23 1 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  HSC32694  Astragalus pauperculus David Johnson 1974-4-20 43 Butte Table Mtn. Comment
  CHSC11861  Asyneuma prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville. 1500 Comment
  CHSC108857  Athysanus pusillus Lowell Ahart 2012-2-22 17748 Butte On the west side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  UC7052  Atriplex canescens unknown 1899-1 Butte Comment
  CHSC46869  Atriplex heterosperma Vernon Oswald 1989-9-6 3988 Butte Gray Lodge Wildlife Area just w of Parking Area 2. 19 Comment
  CAS-BOT-BC172673  Atriplex lentiformis Lowell Ahart 1981-7-26 3008 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
  CHSC43257  Atriplex lentiformis Lowell Ahart 1987-10-22 5925 Butte About 150 yards west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles southwest of Oroville. 38 Comment
  SEINET516426  Atriplex rosea Lowell Ahart 1982-1 3662 Butte Small size plant, growing on ddry bare packed soil, in the parking area around the Gray Lodge Waterfowl Management Area check in station, about 12 mi SW of Gridley. 30 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  CHSC40643  Avena barbata Ahart; Jokerst 1985-3-24 4865 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC9341  Avena barbata B. Anthony 1968-3-29 414 Butte Chico State College Campus, Chico. Comment
  SEINET10507661  Avena barbata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC4375  Avena fatua M. M. Gregg 1966-4-25 93 Butte Between Ed-Psy Building and Life Science Building on the CSC campus, Chico. 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
  CHSC40397  Azolla filiculoides Lowell Ahart 1985-3-24 4850 Butte South of Highway 70, at the intersection of Highway 70 and 191. 100 Comment
  JEPS102437  Azolla filiculoides Lowell Ahart 2011-1-26 8718 Butte On the east side of the parking lot, on the north side of Rutherford Road, about 1/4 mile west of Pennington Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  RSA726559  Baccharis pilularis L. Ahart 2007-10-30 14508 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  HSC96987  Baccharis pilularis subsp. pilularis R. D. Fischer 2003-11-30 17 Butte Sierra Nevada Foothills between Chico and Paradise in the Butte Creek Canyon. Edge of the Centerville Rd. 3.9 mi. N of the Honey Run Rd. and Centerville Rd. junction, 0.1 mi. N of Center Gap Rd. 183 Comment
  CHSC46907  Baccharis salicifolia Lowell Ahart 1984-10-14 4814 Butte Along North Honcut Creek, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC81461  Baccharis salicifolia Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  SEINET10448246  Barbarea orthoceras Mary Susan Taylor 1978-7-19 Taylor 1754 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  SD48506  Barbarea verna E. K. Balls 1957-5-22 22517 Butte Southwest shore, Lake Almanor, just beyond Big Meadows Dam. 1399 Comment
  SEINET10838816  Bassia hyssopifolia Lowell Ahart 1983-9-19 Ahart 4453 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  CHSC65198  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch, about 1-1/2 miles north and 3/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC30286  Bidens frondosa M. S. Taylor 1978-9-8 1877 Butte Along flood control slough, ca. 4 mi N of Chico, on Hwy 99. 60 Comment
  CHSC24496  Bistorta bistortoides M. S. Taylor 1976-6-28 1164 Butte Ca. 1/4 mi e of Old Humboldt Rd, in Butte Meadows. 1341 Comment
  CHSC43711  Bistorta bistortoides Vernon Oswald 1983-7-6 832 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CAS-BOT-BC412959  Bistorta bistortoides Dr. A. Kellogg 1870-6-21 s.n. Butte Chico Comment
  NY31003  Blennosperma californicum C. B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 0.5 mile southeast of Butte Creek on Chico-Oroville road 57.9 Comment
  CHSC3919  Blennosperma nanum Wayne O. Baum 1967-3-17 12 Butte In triangle area on E side of Cohasset Rd. and ca.3.2 mi N of Chico. 60 Comment
  SEINET11839694  Blennosperma nanum Unknown 1968-1 288 Butte W of N road to Chico Missile Base 61 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
  CHSC33707  Boechera arcuata J. D. Jokerst 1981-5-21 1331 Butte Ca 1.0 mi NE of the town of Pulga. Comment
  CHSC109135  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte On the north side of a very large basalt outcrop, about 400 yards east of Big Chico Creek, about 100 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CAS-BOT-BC14635  Boechera rectissima H. F. Copeland 1931-6-10 1518 Butte Jonesville. 1524 Comment
  RSA0028756  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  CHSC46319  Bolboschoenus maritimus subsp. paludosus Vernon Oswald 1989-6-6 3798 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Field on the n side of Cutte Creek, s of the road leading to ranch headquarters. 19 Comment
  CAS-BOT-BC145683  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 304 Comment
  CDA1769  Brachypodium distachyon L. Ahart 2000-5-16 8359 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CHSC6163  Brachypodium distachyon E. Parreno 1968-4-28 76 Butte NE of Covered Bridge, Chico. 60 Comment
  CHSC96749  Brassica juncea Lowell Ahart 2007-6-3 13975 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) west of Concow Reservoir. 415 Comment
  CHSC80540  Brassica napus Lowell Ahart 2001-5-10 8739 Butte On the sides 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
  CHSC100874  Brickellia californica L. P. Janeway 2008-10-8 9605 Butte Cascade Range Foothills Upper Bidwell Park, Chico; north side of Big Chico Cree 455 m west of Day Camp. 91 Comment
  CHSC37652  Brickellia greenei T. B. Devine 1981-8-25 754 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CHSC26721  Briza minor M. S. Taylor; M. Hayes 1978-4-14 1555 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
  CHSC49510  Briza minor Vernon Oswald 1985-5-13 1754 Butte Upper Bidwell Park, Chico, on the rocky bed of Chico Creek at the retaining wall at the e end of Centennial Ave. 85 Comment
  CHSC6667  Briza minor Marilyn Lee 1968-4-19 126 Butte West side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S. E. of cemetary, Table Mt. Comment
  CHSC81426  Briza minor J. Trizzino 2001-4-30 66 Butte Upper Bidwell by Horseshoe Lake along seasonal creek drainage. 109 Comment
  CHSC98970  Briza minor Lowell Ahart 2008-5-12 14739 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10899500  Brodiaea californica Mrs. R. M. Austin Austin 45 Butte Iron Canyon Comment
  CAS-BOT-BC482211  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  CHSC38763  Brodiaea californica var. californica Vernon Oswald 1983-6-2 610 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  UC843925  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte near Chico airport Comment
  CHSC117352  Brodiaea coronaria B. Castro; Sabrina Bell 2015-5-21 2044 Butte Sacramento Valley. Ca 1.6 air mi E of hwy 99 off eastern edge of Thermolito Afterbay, 1.16 mi Sof Hwy 162, along SW extension of Wilbur Rd (the Afterbay perimeter road). A few yards S of road. 43 Comment
  SEINET10932597  Brodiaea coronaria Mrs. R. M. Austin Austin 27 A Butte Iron Canyon Comment
  SEINET10533792  Brodiaea elegans A. Arthur Heller 1914-5-8 Heller 11382 Butte Clear Creek school house. Comment
  SEINET7072710  Brodiaea minor A. G. Vestal 1963-5-7 s.n. Butte 5.2 miles southwest of Bangor on the road to Bangor. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 632998E, 4355465mN. 39? deg. 20' 25" North Latitude, -121? deg. 27' 24" West Longitude. Coordinate datum: NAD 27) Comment
  UCD77195  Brodiaea nana Robert E. Preston 2004-4-21 2217 Butte Ca. 4.3 mi NW of Oroville. 56 Comment
  CHSC39506  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  UCD78201  Brodiaea sierrae R. E. Preston 2002-6-28 1892 Butte Forbestown. 832 Comment
  SD122511  Bromus carinatus Lowell Ahart, Peter Ahart 1984-6-10 4706 Butte NE of Forbestown; about 2 mi SW of Forbestown Diversion Dam 700 Comment
  CDA31575  Bromus carinatus var. carinatus L. Ahart 2006-7-16 12976 Butte About 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows, west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, and 100 yards south of the cabin Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  CHSC87811  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 10989 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  JEPS106265  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 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 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  CHSC82266  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  CHSC94291  Bromus ciliatus Lowell Ahart 2006-7-16 12975 Butte West edge of a large meadow and bog, 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. 1569 Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  UCD59302  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  CHSC2131  Bromus hordeaceus M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC52150  Bromus hordeaceus Patricia Collins 1981-4-22 13 Butte Field near the bank of Singer Creek, ca. 21 km n w of Chico. Intersection Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  SEINET10514564  Bromus hordeaceus Marilyn Lee 1968-5-3 Lee 158 Butte South side of Skyway, 6 miles E. of Chico. Comment
  CHSC35754  Bromus laevipes R. E. Preston 1982-6-2 295 Butte At side of Nelson Bar Rd, at jct with dirt rd to Lime Saddle Powerhouse; ca. 4.5 mi se of Paradise. 292 Comment
  JEPS116070  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 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
  UCD58894  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  UCD59015  Bromus madritensis John Thomas Howell; Gordon H. True 1967-6-11 42558 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  JEPS117882  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 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
  JEPS115989  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  RSA591528  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville. 1524 Comment
  CHSC49518  Bromus orcuttianus Vernon Oswald 1983-7-6 807 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. On an old logging road. 1036 Comment
  CAS-BOT-BC161610  Bromus sterilis Lowell Ahart 1987-5-6 5554 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CAS-BOT-BC161618  Bromus sterilis Lowell Ahart 1980-5-17 2292 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC42862  Bromus sterilis Lowell Ahart 1987-5-6 5554 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  SEINET10507343  Bromus sterilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4238 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SEINET10507344  Bromus sterilis Lowell Ahart 1985-5-10 Ahart 4956 Butte 10 meters north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  CAS-BOT-BC18157  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 975 Comment
  CAS-BOT-BC438354  Calandrinia ciliata Mrs. C. C. Bruce 1897-5-1 s.n. Butte Little Chico - fields Comment
  CHSC23133  Calandrinia ciliata var. menziesii M. S. Taylor 1976-2-12 991 Butte Abundant along roadside, ca. 500 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  JEPS128725  Callitriche fassettii Lowell Ahart, Emily Meigs Doe 2017-4-1 21388 Butte East of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CHSC38282  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-4-10 318 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC111360  Callitriche marginata Lowell Ahart 2012-5-4 17989 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 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
  SEINET12046804  Calochortus albus D. J. Funk 1976-1 17 Butte ca 5 ft W of Humbug Rd & 150 yd NW of covered bridge on Butte Creek, 6.4 mi ESE of Chico 110 Comment
  CHSC2230  Calochortus coeruleus N. Maxwell 1929-4-28 Butte Paradise. 548 Comment
  OBI48097  Calochortus coeruleus Rhonda Riggins 1989-4-27 1627 Butte Edge of woods along Detlow rd, 0.4 mi S US 70, 2.6 mi SW Jarbo Camp Fire Station, 8.0 mi SW Pulga 640 Comment
  CAS-BOT-BC489922  Calochortus leichtlinii Lowell Ahart 1982-6-4 3551 Butte About 8 miles east of Feather Falls. 304 Comment
  CAS-BOT-BC489974  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC34484  Calochortus luteus J. D. Jokerst 1978-5-21 127 Butte 200 met w of Hwy 32 on top of ridge. 365 Comment
  CHSC51940  Calochortus luteus S. B. Collom 1988-4-25 13 Butte Chico; 100 uds E of 5th St bridge in Lindo Channel, on N side. Comment
  CHSC51941  Calochortus luteus Denise Monceau 1984-4-20 4 Butte Ca 6 mi NE on Wildwood Ave, SE side of rd, 1/4 mi NE on trail. 83 Comment
  UCD80423  Calochortus luteus CNPS SN Foothill Team 2005-5-4 SNFN 0201 a Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  CAS-BOT-BC491851  Calochortus luteus H. E. Brown; A. A. Heller 1902-5-8 5494 Butte Berry Canyon, Near Clear Creek Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  UCSB63609  Calochortus luteus McKirahan, Kim 1986-4-13 Butte Ca. 46 miles north of Horseshoe Lake in upper Bidwell Park, Richardson Springs; quadrangle, nw 1/4 of sw 1/4 Sec 8,T23N,R1W 137 Comment
  CHSC44982  Calochortus monophyllus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14 km ne of Chico municipal airport. 500 Comment
  UC3375  Calochortus monophyllus Carl Purdy 1821-1 Butte Chico Comment
  POM109552  Calochortus nudus C. C. Bruce 1898-05 2405 Butte Dye place Comment
  SEINET12046803  Calochortus tolmiei T. R. Norton 1977-1 10 Butte ca 5 mi NE of Paradise, 0.8 mi N of Magalia, 0.25 mi NE of Skyway, 1mi SE of Magalia Reservoir 671 Comment
  SEINET12048539  Calochortus tolmiei Unknown 1984-1 9 Butte ca 1.8 mi S of Concow Reservoir & 0.2 mi S of Jordan Hill Rd, along W side of Concow Rd 457 Comment
  SD1664  Caltha howellii E. B. Copeland June 1930 Butte Jonesville; in meadows by North Willow Creek 1550 Comment
  POM219011  Caltha leptosepala E. B. Copeland 1930-06 s.n. Butte Jonesville. 1500 Comment
  CHSC25402  Calycadenia ciliosa M. P. Hayes 1977-9-11 56 Butte Exactly 3.5 mi E of the Hwy 99 overpass on Hwy 32 in Chico, ca 3-10 m S of the road. 137 Comment
  CHSC50791  Calycadenia ciliosa Vernon H. Oswald; Mary Bailey 1990-8-2 4429 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CHSC34139  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, ca. 1 1/2 mi N and 2 1/4 mi E of Honcut. 50 Comment
  UCD129713  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte along Hurleton Swedes Flat Road, 1.5 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CAS-BOT-BC106077  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CAS-BOT-BC106123  Calycadenia oppositifolia Lowell Ahart 1988-5-30 6033 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across teh North Fork of the Feather River, 365 Comment
  CHSC288  Calycadenia oppositifolia M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC44955  Calycadenia oppositifolia Pauleen Broyles 1988-4-19 1107 Butte Lower Nance Canyon. 90 Comment
  CHSC86592  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-7-11 7897 Butte Northern High Sierra Nevada. Above northeast edge of North Fork Feather River arm of Lake Oroville, 1200 m north of mouth of French Creek. 305 Comment
  UC1876184  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mi W of Paradise, S side of Chico-Paradise Hwy. Comment
  CHSC59105  Calycadenia spicata L. P. Janeway; B. Castro, R. A. Schlising 1992-5-17 4188 Butte Unnamed canyon on the southeast side of Neal Road opposite the upper part of the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. 76 Comment
  UCD129791  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles southwest of Oroville Dam Blvd. Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  CAS-BOT-BC275381  Calycadenia truncata var. truncata A. A. Heller 1938-6-14 15152 Butte On Highway 24, 23 miles E of Oroville Comment
  CAS-BOT-BC90920  Calycanthus occidentalis Lowell Ahart 1981-7-7 2920 Butte About 0.5 mile west of the Oroville Forbestown Road on the Black Bart Road, west of Forbestown. 700 Comment
  CAS-BOT-BC90928  Calycanthus occidentalis John Thomas Howell 1967-6-22 42640 Butte Sierra Nevada. 1 mile southwest of Pulga Bridge Canyon of the Feather River North Fork. Comment
  UC1126248  Calycanthus occidentalis J. E. Sowder 1933-8-4 129 Butte above de Sable Power House; Chico Quad. 609 Comment
  CHSC57129  Calyptridium monospermum L. P. Janeway 1987-6-26 2313 Butte Camp Creek, 0.4 mi east Granite Ridge near crossing of the road to Lynch and Logue Meadows. 1365 Comment
  SEINET263497  Calyptridium umbellatum R. J. Shaw 1993-5-23 5094 Butte East of Chico at mile marker 31 of Hwy 32 1000 Comment
  HSC103795  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km. N of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. 847 Comment
  JEPS113315  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km north of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. Comment
  CHSC37089  Calystegia malacophylla L. Ahart 1982-9-29 3832 Butte At N end of Lost Creek Reservoir Dam, ca. 2 mi NW of Strawberry Valley. 1100 Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  CHSC46360  Calystegia occidentalis Lowell Ahart 1989-5-28 6300 Butte On a steep slope 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
  SEINET10496587  Calystegia occidentalis Mary Susan Taylor 1979-6-12 Taylor 2299 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  SEINET12329570  Calystegia occidentalis L. Ahart, Ahart, P. 1984-1 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC46810  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1982-6-24 4724 Butte E side of Ponderosa Way (Rim Rd), 1.3 mi N of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  JEPS113305  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 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. Comment
  UC145404  Camelina microcarpa Guill Bros. 1902-1-1 Butte Chico Comment
  CHSC42102  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS105938  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville 502 Comment
  CHSC34524  Cardamine pachystigma R. E. Preston 1981-4-11 52 Butte Roadcut, on s side of Forbestown Reservoir, ca. 400 m e of diversion dam, ca. 5.8 km ne of Forbestown. 580 Comment
  CHSC82711  Cardamine pachystigma var. pachystigma L. P. Janeway; B. Castro 2002-3-27 7455 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about half way down to North Fork Feather River; 1.1 km south-east of mouth of China Gulch. Dirt road cutbank and adjacent forest slope. 549 Comment
  CHSC106229  Carduus pycnocephalus subsp. pycnocephalus L. P. Janeway; B. Castro 2010-5-23 9976 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north side of Big Chico Creek, along Yahi Trail about 450 m west of Day Camp. 90 Comment
  CAS-BOT-BC18209  Carex V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mountain region located ca. 6 air miles southeast of Jonesville. 1996 Comment
  CHSC55426  Carex abrupta L. P. Janeway; C. A. Janeway 1986-9-13 1852 Butte Along Humbug Summit Road at Cold Springs, just below Humbug Summit. 1965 Comment
  CHSC55427  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2932 Butte Meadow between two lakes of southeastern-most headwaters of Butte Cr. 1935 Comment
  SEINET10467018  Carex amplifolia Lowell Ahart 1985-6-30 Ahart 5077 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC53710  Carex angustata L. P. Janeway 1987-6-26 2319 Butte Southwest end of Logue Meadows. 1325 Comment
  CHSC53711  Carex angustata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2509 Butte Southern-most pond on slopes on south side of Coon Hollow. 1767 Comment
  POM218979  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CHSC43867  Carex aurea Vernon Oswald 1987-5-2 2363 Butte East side of Little Chico Creek Canyon ca. 1 mi se of Forest Ranch. 609 Comment
  CHSC25460  Carex barbarae Hayes; Warner 1977-9-12 104 Butte Along the middle branch of Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  CAS-BOT-BC19413  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  CHSC52252  Carex bolanderi L. P. Janeway 1989-5-11 3233 Butte Along Bardee's Bar Road (Pulga Road) 3.2 mi N of Big Bend Road; in canyon of North Fork Feather River. 518 Comment
  JEPS104192  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte along a small stream, on S side of Ponderosa Way, about 2 /12 road mi SW of the Ponderosa Dam, about 2 air mi NW of Forbestown; Lat. 39 deg. 32' 15.3, Long. 121 deg. 18' 19.2 578 Comment
  JEPS117694  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  UC1755303  Carex brainerdii Dean W. Taylor 2004-7-21 19198 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 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
  CAS-BOT-BC422330  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0.8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1055 Comment
  CHSC115853  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0,8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands. 1055 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
  CHSC52852  Carex densa L. P. Janeway 1987-6-13 2188 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Road) from Jarbo Gap. 883 Comment
  CHSC84272  Carex densa Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10220 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue Chico. 121 Comment
  CHSC52862  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising 1988-7-22 3072 Butte Seep just above the High Lakes Road 3.4 mi W of the pass. 1905 Comment
  JEPS114981  Carex feta Lowell Ahart 2008-6-13 14818 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  RSA770105  Carex feta L. P. Janeway, B. Castro 2009-7-4 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC43912  Carex fracta L. P. Janeway 1987-6-26 2308 Butte Above Camp Cr, 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
  CHSC45617  Carex fracta L. P. Janeway; R. A. Schlising 1988-8-1 2914 Butte Vernal pool on the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  HSC87072  Carex fracta L. P. Janeway 1987-6-27 2337 Butte Canyon of Little Kimshew Creek, along road 0.9 mi. N of the Concow Rd. 1509 Comment
  JEPS103106  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7618 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  SEINET7468094 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville 1720 Comment
  CHSC86534  Carex gracilior L. P. Janeway; John Hunt 2003-6-13 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 En-terprise Bridge. Dirt roadside at intersection of Springer Road (Road 19N31X) and Feather Falls Road (Lumpkin Ridge Road). 305 Comment
  JEPS113289  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side fo North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 52 Comment
  SEINET7561551 Image available Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Pulga 7.5' Quad. High Cascade Range. Flea Valley, meadow at head on Concow Creek. 1116 Comment
  UC826047  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. Comment
  CAS-BOT-BC28189  Carex hirtissima L. P. Janeway 1989-5-19 3260 Butte Griffin Gulch and Jordan Hill Rd. 5.4 mi N of Concow Rd. Paradise East quad. 624 Comment
  CHSC99381  Carex infirminervia Robert F. C. Naczi; Lawrence P. Janeway 2006-7-23 10516 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  CHSC44663  Carex jonesii L. P. Janeway 1987-7-5 2461 Butte Mdw near Dresser Camp, 3.0 mi N of Jones Mdw along rd to Philbrook Res. 1889 Comment
  CHSC52916  Carex jonesii L. P. Janeway 1988-7-2 2945 Butte Marsh-meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC52917  Carex jonesii L. P. Janeway; R. A. Schlising 1988-7-22 3074 Butte Seep just above the High Lakes Road 2.4 mi W of the pass; canyon of Philbrook Creek. 1905 Comment
  CHSC45747  Carex laeviculmis L. P. Janeway 1988-6-19 2839 Butte 3.3 mi N of Stirling City towards Inskip along logging rd 0.2 mi W of The Skyway. 1219 Comment
  POM218980  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  SEINET7483992 Image available Carex lemmonii E. B. Copeland 1929-1 610 Butte Jonesville 1500 Comment
  CHSC52262  Carex nebrascensis L. P. Janeway 1988-7-2 2950 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CAS-BOT-BC119721  Carex nervina V. Oswald; Lowell Ahart 1988-7-26 3623 Butte Snow Mt. region ca. 6 air mi SE of Jonesville. 2026 Comment
  CHSC88223  Carex nervina Lowell Ahart 2004-7-23 11297 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  CHSC52246  Carex nudata L. P. Janeway; Vern Oswald 1989-4-17 3224 Butte Along ditch just southeast of Butte Creek, ca 1/4 mi northeast of Hwy 99. 67 Comment
  CAS-BOT-BC119046  Carex pellita Herbert Faulkner Copeland 1920-8-1 174 Butte Jonesville Meadow 1219 Comment
  CHSC47129  Carex praegracilis Vernon Oswald 1983-3-31 239 Butte Upper Bidwell Park, Chico, beside Yahi Trail where it enters the wooded copse e of Diversion Dam (1.3 mi e of the power lines). 146 Comment
  JEPS120085  Carex praegracilis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18108 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC89738  Carex specifica L. P. Janeway; Robert F. C. Naczi 2004-7-24 8183 Butte High Cascade Range. Near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. 1737 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
  CDA13902  Carex subfusca G. F. Hrusa, T. D. Wilfred 1997-5-8 13759 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  SEINET8413043  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows, 1219 Comment
  CAS-BOT-BC115067  Carex vesicaria L. P. Janeway 1988-7-29 3132 Butte Meadow near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC59009  Carex vesicaria Lowell Ahart 1992-7-21 6806 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS114822  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 243 Comment
  CHSC113465  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte In a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC499135  Carex xerophila Peter F. Zika; L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mi N of Skyway Rd. 720 Comment
  CHSC4603  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus, Chico. Comment
  CAS-BOT-BC249111  Castilleja affinis Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC44705  Castilleja affinis R. Banchero 1980-4-7 95 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy. Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC115357  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to the old road and Highway 32, about 6 miles (air) northeast of Chico. 377 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
  CAS-BOT-BC249593  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte Canyon of the north fork of the Feather River along highway US, at Pulga Bridge, west side of river Comment
  CHSC64667  Castilleja applegatei subsp. pinetorum H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 871 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. 1010 Comment
  JEPS123825  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 -B Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  UC492739  Castilleja arachnoidea H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville Comment
  CHSC43563  Castilleja attenuata Lowell Ahart 1973-4-15 200 Butte Along swedes Flat Road, about 1 mile east of Bangor Oroville Highway, north-east of Bangor. 304 Comment
  CHSC50062  Castilleja attenuata Lowell Ahart 1990-4-15 6453 Butte Valley Tassels. Below the high water line of Lake Oroville, east ot the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 295 Comment
  UCD73007  Castilleja attenuata Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC49012  Castilleja campestris subsp. campestris Vernon Oswald 1985-4-11 1705 Butte Hwy 99 0.4 mi n of Hamilton Rd. Comment
  CHSC4917  Castilleja exserta R. L. Adams 1964-3-24 56 Butte Open field NE of Chico. Manzanita Ave. E. of Manzanita School, Chico. Comment
  SD234176  Castilleja exserta Virginia Pinkus Ryder 1965-4-3 363 Butte Table Mtns. 381 Comment
  JEPS93845  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  CHSC114983  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC24982  Castilleja lacera L. Mayer 1975-5-4 Butte Cohasset Road, ca. 3 mi n of Keefer Road, ca. 3 mi ne of Chico. Comment
  CHSC61180  Castilleja lacera Vernon H. Oswald 1993-5-18 5399 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC61181  Castilleja lacera V. H. Oswald; L. Hanson, L. P. Janeway 1993-5-11 5371 Butte McKnight Ranch on the N side of Hwy. 99 between Neal and Durham-Pentz roads, on the bottom of the first canyon (unnamed) S of the Butte County Sanitary Landfill, near the double set of power transmission lines. 91 Comment
  CHSC62585  Castilleja lacera L. P. Janeway 1993-4-27 4332 Butte Upper Bidwell Park, Chico. Steep southeast-facing slope just below the rin, overlooking Day Camp, ca. 0.3 mi east of the powerlines. 228 Comment
  UC454128  Castilleja miniata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM284544  Castilleja miniata Lyman Benson 3956 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  POM252811  Castilleja pruinosa A. A. Heller 1938-7-20 15277 Butte High ridge betw Inskip and chaparral. 1524 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
  UC1281468  Ceanothus H. E. McMinn 1946-5-11 5512 Butte one mi e Forbestown; e of Forbestown Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC64128  Ceanothus cuneatus Mark D. Reiser 1992-4-21 20 Butte Meadow ca. 300 yds sw of Vilas rd., Cohasset Stage, ca. 8 mi ne of Chico Municipal Airport. 609 Comment
  CAS-BOT-BC50787  Ceanothus integerrimus Margaret J. Williams; Wayne Roderick 1984-5-25 84- 22 -3 Butte Magalia, near Skyline road to Paradise 167 Comment
  CHSC23673  Ceanothus integerrimus M. S. Taylor 1976-4-27 1087 Butte Abundant ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  SJSU5725  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather R Canyon, Pulga 487 Comment
  UCSB63612  Ceanothus integerrimus McBride, Marjorie 1986-4-13 Butte 10.7 mi n of Chico, E side of Hwy 32. Paradise West Quadrangle, 7.5'. W center Sect. 25. T23N, R2E. 536 Comment
  CHSC1509  Ceanothus integerrimus var. macrothyrsus L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  RSA107427  Ceanothus integerrimus var. puberulus L. S. Rose 1955-6-15 55099 Butte Paradise 518 Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  CAS-BOT-BC51731  Ceanothus lemmonii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC51732  Ceanothus lemmonii E. K. Balls; L. W. Lenz 1955-5-13 20688 Butte Yellow Pine F.; Paradise, on road from Oroville to Magalia 579 Comment
  CHSC65583  Ceanothus lemmonii L. P. Janeway 1995-6-19 4799 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CAS-BOT-BC52003  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte edge of the forest at Cohasset. above Pine Creek, several miles farther north Comment
  SEINET194924  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  SEINET12210496  Ceanothus prostratus D. G. Bendix 1978-1 9 Butte 0.8 km s of junction of Holmwood Drive with Rosewood Drive, Magalia;3 m e of rock 1.5 m tall 850 Comment
  CHSC48836  Ceanothus velutinus Vernon H. Oswald 1983-8-17 993 Butte Trail between Humboldt Summit and Humboldt Peak, ca 3 mi ne of Jonesville. 2097 Comment
  LA45120  Ceanothus velutinus E. B. Copeland; 1930-6-29 424 Butte Jonesville 1550.0 Comment
  CHSC100466  Celtis sinensis Lowell Ahart; John Dittes 2008-11-14 15447 Butte On the north side of the deer pen, 10 yards east of the small storage building, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC2026862  Celtis sinensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18231 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC20502  Centaurea cyanus M. S. Taylor 1975-7-1 828 Butte 1456 Arcadian, Chico. 60 Comment
  CDA19037  Centaurea diffusa R. Keck, Riley 2000-7-25 PDR 1170758 Butte 1.2 W of Butte Meadows CDF Fire Station. 0 Comment
  CDA7259  Centaurea maculosa L. L. Heinrichs 1973-6-25 Butte Stirling City 0 Comment
  JEPS98719  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CHSC294  Centaurea solstitialis D. Bower 1953-7-23 Butte La Llano Seco. Rice Field. 30 Comment
  CAS-BOT-BC284505  Centaurea solstitialis Forman T. McLean 1921-10-20 33 Butte Chico Comment
  JEPS46984  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte Table Mt. Oroville Comment
  RSA716047  Centaurium muehlenbergii L. Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about five miles west of Oroville Quincy Highway. 734 Comment
  RSA88447  Centaurium muehlenbergii J. T. Howell 1951-6-26 27507 Butte Feather River Canyon. 198 Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC84382  Centaurium tenuiflorum Lowell Ahart 1983-6-26 4128 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS127004  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte About 200 yards west of Loma Rica, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC288535  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte Near Pentz Comment
  CAS-BOT-BC288529  Centromadia fitchii Forman T. McLean 1921-10-18 30 Butte Nelson Comment
  CHSC45958  Centunculus minimus Lowell Ahart 1975-6-19 795 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CDA13342  Cephalanthera austiniae G. F. Hrusa, T. D. Wilfred 1996-7-9 13190 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  SEINET10470077  Cephalanthera austiniae Mary Susan Taylor 1982-6-24 Taylor 4746 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  UCD138894  Cephalanthera austiniae Kenneth D. Stewart 1965-7-15 s.n. Butte State Highway 32, around 15 miles north of Forest Ranch. Comment
  CHSC100963  Cerastium glomeratum Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15494 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC46350  Cerastium glomeratum Lowell Ahart 1989-5-23 6243 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS107331  Cerastium glomeratum Lowell Ahart 2005-4-14 11715 -A Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS122229  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 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
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  POM89488  Cercocarpus betuloides C. C. Bruce 1897-04 1817 Butte Big Chico Comment
  UCD113037  Cercocarpus betuloides J. I. Mallory 1968-7-1 297 Butte 2 miles W-SW of Mountain Home State Forest Headquarters, Sequoia National Forest. 1219 Comment
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Sep 9 2014
  UCD159526  Chamaemelum fuscatum D. S. Park 2011-4-6 275 Butte Near Oroville. Off Jem Rd. Growing in abundance in and nearby orchards and roadside. 44 Comment
  UCD126572  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  JEPS83925  Chamaesyce hooveri R. D. Stone and R. E. Buck 1987-8-3 831 Butte 2.3 mi ssw intersection of Hwy 99 and Rowles Rd (0.2 mi s of the Butte-Tehema county line); Vina Plains 51 Comment
  RSA516507  Chamaesyce hooveri R. D. Stone, R. E. Buck 1987-8-4 832 Butte Vina Plains, straddling fenceline, 0.4 miles WSW of the intersection of Hwy 99 and Cana Hwy. 56 Comment
  CHSC113196  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC31695  Chamaesyce maculata L. Ahart 1973-6-28 258 Butte Near a creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC75997  Chamaesyce maculata Lowell Ahart; Vernon H. Oswald 1999-8-13 8160 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
  CHSC94723  Chamaesyce maculata Lowell Ahart 2006-9-28 13385 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
  CHSC112596  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2013-9-5 19021 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  JEPS115728  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  UC1303129  Chamaesyce ocellata subsp. ocellata A. A. Heller 1927-9-5 14469 Butte ca 3 mi e Chico Comment
  CHSC61315  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET10529950  Cheilanthes californica Mary Susan Taylor 1980-2-17 Taylor 2356 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CAS-BOT-BC69475  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area, ca 1/2 mi. se. of Parish Camp, just s. of Lime Saddle memorial park, ca. 5 mi. s. 304 Comment
  SEINET10529872  Cheilanthes cooperae Mary Susan Taylor 1979-3-20 Taylor 1956 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
  CHSC92612  Cheilanthes gracillima L. P. Janeway 2005-5-29 8411 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kim-shew Creek drainage. Steep east-facing slope. 1478 Comment
  CHSC43256  Chenopodium album Lowell Ahart 1987-10-22 5923 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile northwest of Highway 70. 76 Comment
  CDA3060  Chenopodium ambrosioides T. C. Fuller 1962-12-7 9955 Butte Hipp Ranch, end of Oliva Avenue, 0.5 miles east of Mt Ida Road, ca. 7 miles east of Oroville. 0 Comment
  SEINET11268220  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-11-10 9413 Butte North side of Gridley Road, about 100 yards southeast of the bridge across the Feather River, about 3 1/2 miles (air east of Gridley.; 0 27 Comment
  RSA0058878  Chenopodium strictum var. glaucophyllum Lowell A. Ahart 2008-7-23 15147 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
  CAS-BOT-BC451371  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  POM193362  Chimaphila umbellata subsp. occidentalis E. B. Copeland 1930-6-24 432 Butte Jonesville. 1550 Comment
  SEINET3451380  Chloris virgata Unknown 2006-8-2 6 .337 Butte East of Butte City, East of Butte City, along Ord Ferry Road, east of old Sacramento River district 30 Comment
  CHSC26824  Chlorogalum angustifolium M. S. Taylor 1978-5-7 1592 Butte On e side of Williams Rd, on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  HSC38109  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2445 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC39020  Chlorogalum pomeridianum var. pomeridianum J. D. Jokerst 1983-6-21 1818 Butte Top of North Table Mountain at north edge of Coal Cr Canyon. 304 Comment
  CHSC6035  Choenomeles japonica M. MacArthur 1968-6-18 225 Butte Ca. 30 ft. E of Big Chico Creek, near end of PSA bld. bridge, Chico State College. 60 Comment
  CAS-BOT-BC252674  Chorizanthe membranacea A. A. Heller; H. E. Brown 1902-5-6 5465 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC252675  Chorizanthe membranacea C. R. Quick 1951-6-5 51 -88 Butte 13 miles from Chico on Deer Creek Road Comment
  RSA489567  Chorizanthe polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  CHSC94529  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
  CAS-BOT-BC285283  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville 1828 Comment
  CAS-BOT-BC288038  Cirsium occidentale var. venustum Lowell Ahart 1983-6-21 4075 Butte Along Bloomer Hill Road about 3/4 mile west of the Oroville Quincy Highway about 15 miles north-east of Oroville 425 Comment
  CHSC3521  Clarkia arcuata John Francis 1966-4-16 118 Butte On hillside S. of covered bridge (Honey Run). Comment
  CAS-BOT-BC163543  Clarkia arcuata Frances Brown 1935-5-1 s.n. Butte Mountains near Durham Comment
  SEINET10453145  Clarkia biloba subsp. brandegeeae Lowell Ahart, Peter Ahart 1982-6-26 Ahart 4142 Butte T20N R5E nw/nw sec 15. Along Ponderosa Way (Big Ridge Rd), just a little s of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 Comment
  SEINET10453146  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 Ahart 4658 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  JEPS105640  Clarkia concinna subsp. concinna L. P. Janeway, John Hunt, Adam Henderson 2003-6-3 7804 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.4 km southwest of mouth of Bean Creek 283 Comment
  CDA38047  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte 0.1 mile north of bridge over North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC88085  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-4-17 170 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on edge of 10 Mile House Road at road's closest point to Big Chico Creek. Parallel rd., e. side, on steep bank. UTM: 10609373E 4407196N. 215 Comment
  CHSC88643  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 361 Butte Plumas National Forest. Poe Power House Road. 365 Comment
  POM39336  Clarkia gracilis subsp. albicaulis C. C. Bruce 1898-05 s.n. Butte Little Chico Comment
  CHSC50052  Clarkia gracilis subsp. gracilis Lowell Ahart 1990-4-8 6437 Butte On banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  CHSC91668  Clarkia mildrediae subsp. mildrediae L. P. Janeway; Samantha Mackey Hillaire 2005-7-11 8489 Butte Northern High Sierra Nevada. Near top of east side of broad ridge between Dogwood Creek and Camp Creek; 1.5 km southwest of confluence of Camp Creek and Lockerman Creek. Steep northeast-facing slope. 1079 Comment
  CHSC52094  Clarkia purpurea R. C. Kirkpatrick 1972-4-25 39 Butte Found ca. 100 yds. se of Horseshoe Lake and ca. 50 yds sw of the skeet shooting range. 152 Comment
  UC725303  Clarkia purpurea A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  UC107844  Clarkia purpurea subsp. purpurea H. E. Brown Mar 3 1897-Mar 23 1897 212 Butte near Clear Creek 53 Comment
  SD111901  Clarkia purpurea subsp. quadrivulnera Barbara Ertter, Lowell Ahart & Jeff Strachan 1980-5-6 3278 Butte Peter Ahart Ranch ca 2 1/2 miles NNE of Honcut between Oroville & Marysville, stream through Valley Grassland and grainfield. 29 Comment
  CAS-BOT-BC163643  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1980-5-25 2324 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC164792  Clarkia rhomboidea L. P. Janeway; Perrie Cobb 1993-6-1 4364 Butte Southeast side of canyon of North Fork Feather River; along dirt road from Cresta Rest Area to the Bear Ranch Creek falls 487 Comment
  CHSC70742  Clarkia rhomboidea L. P. Janeway; Perrie Cobb 1993-6-1 4364 Butte Southeast side of canyon of North Fork Feather River; along dirt road from Cresta Rest Area to the Bear Ranch Creek falls. 487 Comment
  UC1609083  Clarkia rhomboidea Lowell Ahart 1993-6-20 6980 Butte about 6 1/2 mi (air) ne Feather Falls (about 1 1/2 mi e Camp 18); Lumpkin Ridge 1219 Comment
  CHSC111318  Clarkia rhomboidea Samantha Mackey Hillaire 2008-5-22 1256 B Butte Plumas National Forest. Roadcuts under powerlines. 731 Comment
  SEINET10492534  Clarkia rhomboidea Mary Susan Taylor 1978-7-21 Taylor 1792 Butte of Lake Madrone, at Oroville-Quincy Hwy turnoff, ca 10 miles NE of Oroville; Yellow Pine Forest. 2000 feet. 610 Comment
  UCD104987  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  UCD104992  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mile NW of Oak Point. 0.8 mile E of Transfer Ridge, E side of Breakneck Canyon. 1.5 miles N of West Branch Feather River. 1402 Comment
  SEINET10492156  Clarkia unguiculata Tim Holtsford 1992-5-25 Holtsford 920525 -2 Butte Cherokee rd, 0.15 mi s of oregon gulch rd (southern intersection of these two Rds). Ne-facing roadcut under oaks, digger pines, with rhus, avena. Several Hundred plants scattered about 50 yards up the rd. Some plants appear to have The cr- gene (or something like it). Most flowering over. Comment
  JEPS110202  Claytonia palustris Lowell Ahart 2006-7-16 12987 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
  RSA0059521  Claytonia palustris E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1500 Comment
  SEINET10674969 Image available Claytonia palustris John R. Swanson 1959-7-4 Swanson 490 Butte Butte Co., Jonesvile, marshy, sloping, stream-fed meadow above south bank of Jones Creek. 0.4 km. east of the Jonesville Hotel. 1550 Comment
  CHSC31195  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-3-19 2392 Butte Macabes Creek Canyon, in very wet shady areas under tress, in moss over rocks by the creek, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi ne of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC98971  Claytonia parviflora subsp. parviflora Lowell Ahart 2008-5-8 14718 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  RSA718341  Claytonia perfoliata L. Ahart 2006-5-8 12596 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  CHSC19934  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1975-3-10 380 Butte Abundant on s side of Butte Creek, ca. 30 ft s of Covered Bridge, ca. 8 mi e of Chico. Comment
  JEPS115238  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2009-4-3 15534 Butte Along the north margin of the paved road, north of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET10572730  Claytonia perfoliata subsp. perfoliata Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5379 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  SEINET10929039  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3440 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
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  SEINET12088731  Clematis lasiantha Unknown 1978-1 17 Butte ca 8 mi NE of Chico Municipal Airport and .5 mi NW of Rock Creek, 12 mi NE of Chico Comment
  SEINET5337773  Clematis lasiantha S. Dean 1979-4-24 s.n. Butte Hwy 70. Feather River Canyon. Oroville-Quincy. Approximately 20 miles from Oroville. 1067 Comment
  SEINET5337775  Clematis lasiantha M. J. Williams 1967-4-15 s.n. Butte Near Magalis. 457 Comment
  CAS-BOT-BC92580  Clematis ligusticifolia Lowell Ahart 1985-7-24 5158 Butte At the Forbestown Reserve, about 4.5 miles northeast of Forbestown. At the Generator. 350 Comment
  CHSC28506  Clematis ligusticifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2250 Butte By bridge over creek, Jordan Hill Rd (Ponderosa Way on some maps), ca. .8 mi n of its jct with Concow Rd., ca. 5 mi e of Paradise. 426 Comment
  SEINET10536152  Clematis ligusticifolia Mary Susan Taylor 1979-10-13 Taylor 2250 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  SEINET12332664  Collinsia heterophylla L. J. Edson 1988-1 8 Butte vic. Chico Municipal Golf Course, ca 3 mi NE of Chico 91 Comment
  SD4528  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville, damp spot under brush 1650 Comment
  CHSC3817  Collinsia sparsiflora L. E. Dunkel 1965-2-23 1 Butte Along road bank ca. 200 yards e of covered bridge, on centerville road of Butte Canyon. 54 Comment
  CHSC9260  Collinsia sparsiflora D. C. Burns 1971-4-2 114 Butte Ca. 30 yds. s side of Cohasset rd., ca. 4.0 mi w of the intersection of Cohasset rd. and Vilas rd. 304 Comment
  SEINET10548309  Collinsia sparsiflora var. bruceae Lowell Ahart 1984-4-3 Ahart 4537 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  UC196054  Collinsia sparsiflora var. sparsiflora A. A. Heller 1914-3-9 11190 Butte Chico, in a field near the U.S. Plant Introduction Garden Chico Comment
  CHSC38688  Collinsia tinctoria Vernon Oswald 1983-5-18 501 Butte Upper Bidwell Park, Chico, near Yahi Trail 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC79826  Collinsia tinctoria G. F. Hrusa; T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest. At E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. [Lat./Long. on label is '39 45 N; 121 17 W']. 1100 Comment
  SD147485  Collinsia tinctoria Lowell Ahart 1980-6-19 2383 Butte Along Swedes Flat Road, near Bangor 320 Comment
  UC600655  Collomia linearis H. F. Copeland 1930-7-26 1321 Butte dry places in woods by Butte Creek; Jonesville 1524 Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC93968  Collomia tinctoria R. D. Fischer 2004-6-20 749 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  UC600656  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slides over Butte Creek; Jonesville 1550 Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 Butte About 50 yards south of the fence and about 100 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. Comment
  CHSC46361  Convolvulus arvensis Lowell Ahart 1989-5-23 6237 Butte Near a small stream, near a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC2332  Corallorhiza maculata K. Chew 1954-5-29 Butte Between Flea Valley and Rag Dump, near Stirling. 1097 Comment
  CHSC30738  Corallorhiza maculata M. S. Taylor; R. A. Schlising 1980-7-6 3080 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  UC127773  Corallorhiza maculata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM196099  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville 1550 Comment
  RSA719716  Cordylanthus pilosus subsp. pilosus Michael A. Vincent, K. Levings 2006-7-29 12895 Butte NE of Chico along Rt. 32. Comment
  LA209148  Cordylanthus tenuis subsp. tenuis E. B. Copeland; 1929-7-29 sn Butte Jonesville 502 Comment
  UCD131025  Coreopsis tinctoria E. M. Johnston 1915-1 148 -J Butte Biggs. Comment
  CHSC3863  Cornus florida Gary Dutton 1966-4-13 210 Butte CSC; East side of Shasta Dining Hall along creek and foot bridge. Comment
  CHSC42160  Cornus florida Beth Chambers; K. R. Stern 1986-4-4 1 Butte Creek population, Bidwell Park in Chico, along Big Chico Creek. 61 Comment
  CHSC66075  Cornus glabrata Vernon H. Oswald 1996-5-22 7627 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing in the edge of a slough at the SE corner of the Riparian Sanctuary. 28 Comment
  SEINET12137515  Cornus nuttallii Unknown 1979-1 14 Butte N rim of Magalia Reservoir, ca 300 yds E of intersection between Dogtown Rd & Skyway 914 Comment
  UC392212  Cornus sericea subsp. sericea E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  JEPS115259  Cotoneaster pannosus Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC50643  Cotula australis Lowell Ahart 1990-5-28 6498 Butte Along the edges of Palm Avenue, near the old bridge, about 2 1/2 miles north-east of East Gridley. 30 Comment
  SEINET10482970  Crassula Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5227 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CHSC38403  Crassula aquatica Vernon Oswald 1983-5-11 466 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CHSC80522  Crassula aquatica Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast 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
  CHSC82214  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  CHSC26720  Crassula tillaea Hayes; Taylor 1978-4-14 151 Butte On the east side of Williams road, approx. 1/4 mi n of Pentz road on the Butte College Campus. 65 Comment
  CHSC31166  Crassula tillaea M. S. Taylor; J. D. Jokerst 1980-3-28 2403 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1.5 mi e of Hwy 99. 76 Comment
  CHSC5963  Crataegus monogyna M. MacArthur 1968-6-17 204 Butte NW corner of Auditorium, ca. 20 ft. from entrance, Chico State College campus. 60 Comment
  CAS-BOT-BC376469  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 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
  CHSC36841  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte On roadcut, w side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC38437  Croton setiger Vernon Oswald 1983-6-24 758 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  CHSC84052  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS110271  Crucianella angustifolia Lowell Ahart 2006-6-9 12645 Butte On the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 1/8 mile east of Highway 70, about 2 3/4 miles (air) southwest of Pulga 435 Comment
  SEINET3477506  Crucianella angustifolia Unknown 2003-5-26 10214 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.67 miles east of Honcut 60 Comment
  CAS-BOT-BC190094  Crypsis schoenoides Lowell Ahart 1983-10-15 3892 Butte Sierra Nevada. North Honcut Creek, about 1 mile north and 2.75 miles east of Honcut. 50 Comment
  CAS-BOT-BC190169  Crypsis vaginiflora Lowell Ahart 1982-7-10 3673 Butte Sierra Nevada. Ca. 0.25 mile southeast of the Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  CHSC37662  Crypsis vaginiflora T. B. Devine 1981-9-3 768 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC41973  Crypsis vaginiflora Lowell Ahart 1986-11-14 5467 Butte On the bottom of a pond, 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
  CHSC97409  Cryptantha affinis Robert Fischer 2006-6-17 1028 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1493 Comment
  JEPS94328  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte about 8 air mi ne of Stirling City (along edge of the dirt road and n of the camps along Little Kimshew Creek, about 1/4 mi n of the County Road, e of Bald Mountain) 1219 Comment
  UC480662  Cryptantha affinis H. F. Copeland 1927-9-4 1111 Butte Jonesville 1524 Comment
  CHSC103214  Cryptantha crinita Paul Kirk; John Hunt 2010-5-25 101 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  UC1594707  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 Butte about 2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, near Longs Bar Monument); Lake Oroville Recreation Area 76 Comment
  UC480684  Cryptantha flaccida H. F. Copeland 1923-4-8 601 Butte Butte Creek Canyon Comment
  CHSC46756  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte West of the seep, along the dirt road 1/10 mile north-west of the water tower, north of the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 457 Comment
  POM304533  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CHSC46757  Cryptantha rostellata Lowell Ahart 1979-5-20 1878 Butte On a gravel bar along the edge of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  CHSC33414  Cryptantha torreyana R. A. Schlising; R. Banchero 1980-7-28 3932 Butte E of Jonesville, on road to Scotts John Creek area, roadsides. 1828 Comment
  CHSC100476  Cupressus lusitanica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15423 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC33581  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte N of logging landing site, just w of the power lines off logging rd, ca. 1/2 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  SDSU1733  Cupressus macnabiana D. F. Howe 1966-9-1 4315 Butte Magalia 579 Comment
  UCD133530  Cupressus macnabiana Mike Mitzel 1977-2-13 3 Butte ca. 0.5 mi W of the West Branch River and 4 mi N of Paradise. 762 Comment
  CHSC113968  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  CHSC102156  Cuscuta pentagona Lowell Ahart 2009-8-13 16270 Butte Collected on Melilotus albus and Artemesia douglasiana, on dry rocky soil, at the southeast side of the diversion structure that controls Mud Creek diversion and Lindo Channel, norhteast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  RSA739628  Cuscuta subinclusa L. P. Janeway, B. Castro 2008-8-5 9554 Butte Northern High Sierra Nevada, Plumas National Forest, upper end of Magee Ridge at a small gap betw Heinz Creek and Hibbard Creek, 2.7 air kim N of Coyote Gap. 1353 Comment
  CHSC116115  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte Crack in the paved road, strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  CHSC41555  Cynodon dactylon R. L. Ondricek-Fallscheer 1982-5-26 136 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  CHSC4390  Cynodon dactylon V. Hagaman 1966-5-25 Butte W 3rd st. between Chestnut and Hazel, Chico. Comment
  CHSC3536  Cynoglossum grande John Francis 1966-4-6 80 Butte 0.3 mile from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  UCD119179  Cynoglossum grande Harriet Sindel 1970-2-20 20 Butte South side of Highway 32 (old road), 7.3 miles east of Chico. 182 Comment
  CHSC109631  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  JEPS124403  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  SEINET10934995  Cynosurus echinatus Mary Susan Taylor 1979-6-12 Taylor 2300 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC114738  Cyperus difformis Lowell Ahart 1982-8-22 3762 Butte Along the edges of North Honcut Creek, a little SW of the Peter Ahart Ranch, 50 Comment
  JEPS120026  Cyperus difformis Lowell Ahart 2012-10-20 18513 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC77497  Cyperus eragrostis Anna Pinsky 1997-4-30 41 Butte Chico, Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  CAS-BOT-BC114604  Cyperus eragrostis James D. Jokerst 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, ca 3 mi NW of the Oroville Quincy Hwy, 700 Comment
  CAS-BOT-BC114382  Cyperus erythrorhizos Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113130  Cyperus erythrorhizos Lowell Ahart 2013-11-17 19267 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
  SEINET4572027  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte about 1 1/2 miles S of Richvale 31 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC116142  Cyperus niger Lowell Ahart 2015-10-26 20598 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC78283  Cyperus niger Lowell Ahart 2000-6-21 8500 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
  UCSB63742  Cyperus niger Ahart, Lowell 1998-6-30 Butte T20N, R4E, northeast 1/4 Section 17; west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 403 Comment
  CAS-BOT-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC114022  Cyperus rotundus Ernest Bevan; Lorene Bevan 1974-11-24 s.n. Butte Near Honcut 36 Comment
  CHSC99002  Cyperus squarrosus Lowell Ahart 2008-5-30 14797 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC114075  Cyperus squarrosus Lowell Ahart 1983-9-17 4431 Butte Ca 1/8 mi NE of Kunkle Res., south of Paradise. 600 Comment
  UCD141100  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CAS-BOT-BC114201  Cyperus strigosus Lowell Ahart 1987-9-24 5901 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC28803  Cyperus strigosus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-7-6 405 Butte Top of North Table Bt, 300 m NW. of intersection of Cherokee Rd and the eastern edge of section 17. Comment
  CHSC68418  Cyperus strigosus L. P. Janeway 1986-10-19 1933 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  RSA725029  Cyperus strigosus L. Ahart 2006-9-11 13299 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. 432 Comment
  UC1563285  Cyperus strigosus unknown 1990-10-3 6614 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); E. Fork Canyon Creek 243 Comment
  UCD141152  Cyperus strigosus L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC4626  Cystopteris fragilis R. Carter 1966-3-13 299 Butte Found ca 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CAS-BOT-BC445503  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley, 5 mi. NW. of Chico on Hamilton City Road. 45 Comment
  JEPS32213  Damasonium californicum W. L. Jepson 1934-5-4 16607 Butte 1 12/ mi. s. Nord (swales of Pine Creek near Sacramento R.); Pine Creek Comment
  CAS-BOT-BC189900  Danthonia californica Clarence R. Quick 1965-7-25 65 -18 Butte Sierra Nevada. Section Corner Meadow. Coyote Gap - Four Trees road. Comment
  SEINET10968236  Danthonia californica Lowell Ahart 1983-8-16 Ahart 4291 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC52151  Danthonia californica var. americana L. P. Janeway; R. A. Schlising 1988-7-16 3032 Butte Meadow at 'headwaters' of Willow Cr. 1935 Comment
  CHSC59044  Danthonia californica var. americana Lowell Ahart 1992-7-21 6801 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC87109  Datura stramonium L. P. Janeway 2003-9-4 7975 Butte Northern Sierra Nevada Foothills. East side of Lake Oroville (North Fork Feather River), 150 m north-northwest of Foreman Boat-in Campground, 850 m west-southwest of Foreman Creek. 10-12 m below high water line. 265 Comment
  CHSC76008  Datura stramonium var. tatula Lowell Ahart; Vernon H. Oswald 1999-8-13 8134 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
  CHSC42578  Daucus carota Vernon Oswald 1985-5-20 1764 Butte Lower Hgoncut Rd. 0.1 mi e of N. Honcut Creek. Comment
  CHSC40434  Daucus pusillus Lowell Ahart 1985-5-15 4985 Butte On a ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UCD127424  Daucus pusillus R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  CHSC4562  Delphinium C. Glascock 1965-5-23 433 Butte Foothill Blvd 0.2 mi. e of its intersection with Oro-Bangor Hwy. Along roadside, Oroville. Comment
  CHSC56766  Delphinium gracilentum R. A. Schlising 1981-6-16 4088 Butte Cohasset, e of KPAY radio tower (1.1 mi e of junction Cohasset Road on Vilas Road) at West Branch of Mud Creek. 975 Comment
  CHSC56767  Delphinium gracilentum J. D. Jokerst; M. S. Taylor 1980-4-18 608 Butte Nimshew Ridge; 1 mi south of Nimshew, south of road where it makes 90 degree turn to the west on the north edge of the section. 701 Comment
  CAS-BOT-BC121511  Delphinium gracilentum Clarence Roy Quick 1941-6-7 41 -24 Butte Between Big Bar Mt., and Coyote Gap Comment
  POM99886  Delphinium gracilentum C. C. Bruce 1897-05 1914 Butte Forest- Ranch. Comment
  UCD22641  Delphinium hesperium Joseph Laferriere 1982-4-18 3 Butte Side of Hwy 70, 1/4 mile SW of jet of Baggett-Marysville Rd., 3 miles south of Oroville. 65 Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  RSA253329  Delphinium patens A. A. Heller 1938-4-14 15036 Butte Treeless summit of Table Mtn. Comment
  CHSC30886  Delphinium patens subsp. patens J. D. Jokerst 1979-3-20 1153 Butte Top of North Table Mt, W edge of Mt at the waterfall of the South branch of Coal Cr. 365 Comment
  CAS-BOT-BC17017  Delphinium variegatum Lowell Ahart 1980-5-4 2185 Butte Thermalito. 65 Comment
  CAS-BOT-BC82875  Dendromecon rigida Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham. Comment
  CHSC45340  Dendromecon rigida Vernon Oswald 1984-4-16 1158 Butte Near the jct. of the Skyway and Coutolenc Rd. just n of Magalia. 716 Comment
  CHSC43133  Deschampsia cespitosa Robert Banchero 1981-7-18 596 Butte Butte Creek House, ca 3 air mi ne of Jonesville. Meadow. 1755 Comment
  SEINET10835485  Deschampsia cespitosa A. Arthur Heller 1928-7-10 Heller 14621 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SBBG30028  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville 1750 Comment
  CHSC34605  Deschampsia danthonioides Mary Banchero 1979-4-18 18 Butte Northernmost Butte county, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. Roadside. 56 Comment
  SEINET10968134  Deschampsia danthonioides Mary Susan Taylor 1978-5-7 Taylor 1618 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS98683  Deschampsia elongata Lowell Ahart 2000-6-29 8549 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
  SEINET10508567  Deschampsia elongata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4184 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  CHSC33467  Descurainia incana R. E. Preston 1981-7-14 109 Butte Ca. 7.5 km ese of Jonesville. In meadow. 1950 Comment
  CHSC19643  Dicentra formosa Kingsley R. Stern 1966-4-14 Butte 15 mi. Comment
  CAS-BOT-BC402383  Dicentra formosa subsp. formosa A. A. Heller 1915-6-11 11965 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC56757  Dicentra uniflora J. Monelo; B. Castro 1990-4-16 185 Butte Butte meadows- Humboldt Rd ca 1.9 mi n from Hwy 32 n facing rock ca 100 ft nw of Humboldt Rd. 1341 Comment
  SEINET10507904  Dichanthelium acuminatum Mary Susan Taylor 1979-8-4 Taylor 2178 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
  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
  POM109913  Dichelostemma capitatum subsp. capitatum C. C. Bruce 1897-02 2127 Butte [No locality information provided] Comment
  RSA21172  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  RSA21181  Dichelostemma multiflorum Carl B. Wolf 1937-6-12 8781 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CAS-BOT-BC501079  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte 2 1/2 miles SE of Orovill eon road to Wyandotte, Sierra Nevada Foothills 91 Comment
  CHSC3170  Dichelostemma volubile Robert D. Briggs 1966-4-23 R- 162 Butte 3 miles northeast of chico on hwy. 32. Comment
  CHSC82641  Dichelostemma volubile Tara Morgan 2002-5-7 54 Butte Within the burn area of the 2001 Yankee Hill Fire within the area of Yankee Hill along Yankee Hill Rd. off of Highway 70 east of Lake Oroville. 481 Comment
  CAS-BOT-BC502511  Dichelostemma volubile Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut; Along North Honcut Creek. Foothill Woodland. 50 Comment
  CAS-BOT-BC502521  Dichelostemma volubile L. S. Rose 1931-4-14 s.n. Butte Three miles east of Oroville Comment
  CAS-BOT-BC208984  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CAS-BOT-BC209040  Digitaria sanguinalis Lowell Ahart 1986-11-14 5464 Butte On the bottom of teh pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-est of Oroville. 36 Comment
  SEINET10836173  Digitaria sanguinalis Mary Susan Taylor 1979-10-2 Taylor 2209 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  UCD163049  Diospyros virginiana var. virginiana D. O. Burge 2015-9-21 1832 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  UCD170261  Diospyros virginiana var. virginiana D. O. Burge 2016-10-22 2184 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CHSC20519  Diplacus angustatus M. S. Taylor 1975-4-26 528 Butte In meadow ca. 1/4 mi ne of Kunkle Reservoir, ca. 1 mi s of Paradise. 609 Comment
  CHSC30376  Diplacus douglasii J. D. Jokerst 1979-3-9 1141 Butte Top of North Table Mt., adjacent to and S of the waterfalls of the S branch of Coal Cr. Canyon, center of the W edge of section 8. Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51080  Diplacus jepsonii Pauleen Broyles 1987-7-5 1075 .5 Butte Ca 7 km n of Inskip. 1500 Comment
  CHSC58199  Diplacus layneae Vernon H. Oswald; Mayo Torgerson 1992-6-24 5032 Butte Trail into Rattlesnake Creek, which starts at the hairpin curve on Whiskey Flat-Sawmill Peak Rd. ca. 0.1 mi W of the gravel pit, Willard Mine property, ca. 1 mi (air) NE of Magalia. 707 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CAS-BOT-BC154039  Diplacus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road Comment
  CAS-BOT-BC154171  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 7/8 miles from Chico Comment
  CHSC110049  Diplacus tricolor Lowell Ahart 2012-5-2 17962 Butte In a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 89 Comment
  CAS-BOT-BC151361  Diplacus tricolor Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC33420  Disporum hookeri R. A. Schlising 1981-6-29 4127 Butte Rag Dump (NW of Pulga, N of Concow Reservoir, E of Magalia), at Fall Creek. 1158 Comment
  RSA4135  Dodecatheon alpinum subsp. majus E. B. Copeland 1930-6-26 s.n. Butte Jonesville. 1550 Comment
  CHSC4625  Dodecatheon clevelandii subsp. patulum R. Carter 1966-3-3 290 Butte Found 4 mi. NE of intersection of Chico Rd. and Old Cherokee Rd., 15' from W side of Cherokee Rd. 243 Comment
  CHSC67292  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1948 Butte Ca. 10 mi E of Oroville on the E side of Grand Oak Rd., 0.35 mi E of Hurleton-Swedes Flat Rd., just beyond Oak Cemetary. Comment
  SEINET10973444  Dodecatheon hendersonii Mary Susan Taylor 1979-3-20 Taylor 1944 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
  CHSC117343  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2007-7-24 2046 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 (impoundmant) with willows. 43 Comment
  CHSC42201  Downingia cuspidata Victoria Lorber 1986-4-13 Butte 11 mi n of Chico at jcn of Hwy 99 and Broyles Rd. 60 Comment
  UC890622  Downingia cuspidata Elmer I. Applegate 1928-4-27 5378 Butte between Richvale and Biggs Comment
  UC1244057  Downingia montana John R. Swanson 1959-6-13 461 Butte 300 yds w jct. of Camp Lassen rd. (Boy Scouts) with State Hwy. 32; Butte Meadows 1341 Comment
  SEINET12326976  Downingia pulchella Unknown 1974-1 22 Butte Locally abundant at intersection of Broyles Rd and Hwy 99, ca 6 mi N of Chico 69 Comment
  SEINET10448467  Draba verna Lowell Ahart 1984-2-27 Ahart 4497 Butte Peter Ahart Ranch, NE of Honcut, ca. 12 miles S of Oroville. Valley Grassland; 50 m. 50 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
  RSA0011691  Drosera rotundifolia L. Ahart 2006-7-25 13065 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
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  CAS-BOT-BC70858  Dryopteris arguta Wayne Dakan 1975-3-12 s.n. Butte Village of Pulga on the Feather River 457 Comment
  CAS-BOT-BC70860  Dryopteris arguta L. P. Janeway 1994-9-29 4756 Butte Halfway between Fall River and the western end of Jackson Ranch Ridge; north side of the trail from Jackson Ranch Ridge 792 Comment
  CHSC25451  Dysphania ambrosioides Hayes; Warner 1977-9-12 98 Butte Growing in flowerbed beside the Agriculture rainshed near the Clear Creek. On the Butte College Campus at the intersection of Clark and Pentz Roads, approx. 15 mi sse of Chico. 85 Comment
  CHSC75996  Dysphania botrys Lowell Ahart; Vernon H. Oswald 1999-8-13 8178 Butte Disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southwest of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC93373  Dysphania multifida Vernon H. Oswald 2000-11-2 9981 Butte Chico Sewage Treatment Plant on Chico River Rd west of Chico. Scattered on levees surrounding evaporation ponds. 41 Comment
  CAS-BOT-BC197104  Echinochloa crus-galli Mary Susan Taylor 1977-11-10 s.n. Butte Ca. 4 mi. s. of Chico 30 Comment
  CDA42929  Echinochloa crus-galli L. Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CAS-BOT-BC197251  Echinochloa muricata Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS76251  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  UCD61097  Echinochloa muricata P. B. Kennedy 1921-9-9 B Butte Rice Station, Biggs. Comment
  CDA1986  Echinochloa muricata var. microstachya L. Ahart 1998-7-1 8031 Butte North Table Mountain. 50 yards north of a poor east west fence, about 3/4 mile northwest of the cow chute along Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CDA1997  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 Comment
  SEINET239723 Image available Echinochloa oryzicola E. Dean, E. Healy 2001-8-20 854 Butte Biggs UC Field Station Comment
  CHSC25340  Echinodorus berteroi M. P. Hayes 1977-8-13 33 Butte Butte College Campus, in northern-most pond between the branches of Clear Creek. 88 Comment
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  SEINET3097024 Image available Echinodorus berteroi Marc Mittleman 1980-8-1 223 Butte Little Chico Creek, east side adjacent to China Garden Springs 262 Comment
  CHSC94489  Elaeagnus angustifolia Lowell Ahart; Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  UC1101555  Elatine ambigua Herbert L. Mason and Verne Grant 1946-8-15 13052 Butte near caretaker's house (833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  JEPS120900  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards N of Lower Honcut Road, about 1.75 miles W of Honcut. Comment
  CHSC82220  Elatine chilensis Lowell Ahart 2002-4-15 9498 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC42127  Elatine heterandra Lowell Ahart 1984-5-8 4598 Butte About 2-1/2 miles north and 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC82221  Elatine heterandra Lowell Ahart 2002-4-15 9497 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET10447968  Elatine rubella Lowell Ahart 1984-5-8 Ahart 4598 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  SEINET13709911  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8691 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Mi SW of Chico Comment
  CHSC46597  Eleocharis bella V. Oswald; L. Ahart 1989-7-21 3869 Butte Junction of Willow and Colby Creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. In a depression on the w side of Colby Creek. 1487 Comment
  CAS-BOT-BC113369  Eleocharis engelmannii M. S. Taylor 1978-7-22 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, in rice field. 30 Comment
  CAS-BOT-BC112785  Eleocharis macrostachya John Thomas Howell 1959-9-20 34660 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  JEPS98264  Eleocharis macrostachya Lowell Ahart 2000-10-2 8702 Butte 2 mi SE of Ordbend (near the river and S of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  SEINET13711140  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8481 Butte E of Pentz Magalia Rd. 2 Mi. S of ParadiSE (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CHSC37108  Eleocharis pachycarpa L. Ahart 1982-10-15 3887 Butte Sand bar along edges of North Honcut Creek, ca. 1 mi n and 2.7 mi e of Honcut. 50 Comment
  JEPS98591  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte 13 mi SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  CHSC55616  Eleocharis parishii C. A. Janeway 1986-10-25 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  JEPS98357  Eleocharis parishii Lowell Ahart 2000-6-21 8497 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  CHSC46473  Eleocharis quadrangulata Vernon Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the w side of Cana Pine Creek Rd just s of the Tehama County line. 54 Comment
  JEPS104211  Eleocharis rostellata Lowell Ahart 2003-5-27 10224 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  CHSC64240  Eleocharis suksdorfiana S. C. Morey 1983-8-1 647 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC32760  Elymus glaucus J. D. Jokerst 1981-4-10 1286 Butte Top of North Table Mt, W edge ca. 150 met N of Cherokee Rd where it intersects the W edge of Mt. 335 Comment
  CHSC36411  Elymus glaucus J. Boze 1982-4-30 421 Butte Along gravel roadway top of levy south side of Sycamore Creek drainage ca. 1/2 mi. from Eaton Rd. Comment
  RSA719717  Elymus glaucus Michael A. Vincent, K. Levings 2006-6-29 12894 Butte northeast of Chico along Rt. 32 Comment
  UCD61801  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows. 1219 Comment
  UCD61904  Elymus glaucus A. A. Beetle 1941-6-27 2742 Butte 20 miles northeast of Chico. Comment
  SEINET10507701  Elymus glaucus Mary Susan Taylor 1977-6-25 Taylor 1364 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10963911  Elymus glaucus Lowell Ahart 1988-6-21 Ahart 6052 Butte On dry rocky disturbed soil, along Poe Power House Road, about 1/2 mile north of the Poe Power House, about 1 1/2 miles SE of Jarbo Gap. Yellow Pine Forest 366 Comment
  CAS-BOT-BC203421  Elymus glaucus subsp. glaucus V. Oswald; L. Ahart 1988-7-29 3642 Butte Ca 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC87922  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 10959 Butte On the east 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 (air) southeast of Oroville. 45 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
  CHSC46302  Elymus trachycaulus subsp. trachycaulus Vernon Oswald 1989-5-23 3782 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On a dike along Little Dry Creek just downstream from the road to ranch headquarters. 19 Comment
  CAS-BOT-BC409192  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC45419  Enemion occidentale Lowell Ahart 1971-3-26 67 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway. 243 Comment
  JEPS119567  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  JEPS119635  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  UC204404  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durham and Nelson; Butte Creek 53 Comment
  CAS-BOT-BC166843  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap 289 Comment
  CHSC51005  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  UC107941  Epilobium densiflorum H. E. Brown 1896-10-9 111 Butte near Clear Creek 53 Comment
  UC1586476  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald and Lowell Ahart 1991-7-15 4738 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Rd) at creek Marble Creek (e of Oroville-Quincy Hwy, ca 5.75 air mi ne of Brush Creek, e side of creek just upstream from bridge) 1051 Comment
  UC600554  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-7-21 Butte edge of Kennedy's Meadow Jonesville Comment
  POM184022  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-17 s.n. Butte Jonesville; in woods along Butte Creek 457 Comment
  UC1564798  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-12 3850 Butte meadow near headwaters of Big Kimshew Creek (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir, edge of small stream) 1926 Comment
  CHSC35152  Epilobium minutum R. A. Schlising 1980-5-23 3598 Butte N of Lake Oroville State Recreation Area, along Pulga Road, 0.6 mi n of its junction with Big Bend Road. Comment
  UC726202  Epilobium pallidum A. A. Heller 1941-5-24 16148 Butte Clark Rd 2 mi below Paradise Comment
  CHSC112936  Epilobium torreyi B. Castro 2012-6-5 1924 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.16 mi ENE of jcn of E. Hamilton and Larkin Roads. 36 Comment
  UCD80483  Epilobium torreyi CNPS SN Foothill Team 2005-5-28 SNNR 0207 a Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek where the plateau above the creek ends. 159 Comment
  CAS-BOT-BC57993  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the N. Fork of the Feather River, near the Poe Power House, about 2 mi. se. of Jarbo Gap. 271 Comment
  CHSC34681  Equisetum hyemale subsp. affine M. S. Taylor 1979-3-19 1933 Butte 1.5 mi e of Pulga bridge on Hwy 70 over Feather River, ca. 25 mi n of Oroville. 487 Comment
  RSA285081  Equisetum laevigatum J. T. Howell 1975-6-15 51072 Butte Skyway between Chico and Paradise at Butte Creek. 61 Comment
  CAS-BOT-BC204457  Eragrostis cilianensis Willis H. Wheeler 1945-10-11 s.n. Butte U.S. Plant Introduction Garden, Chico Comment
  JEPS120091  Eragrostis curvula Lowell Ahart 2012-6-2 18126 Butte On the south side of Highway 70, about 1/2 mile southwest of Pentz Magalia Highway. Comment
  SEINET13711407  Eragrostis mexicana Lowell William Ahart, Lowell William Ahart 1999-1 8306 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Bank of Sacramento River Comment
  CAS-BOT-BC284080  Eragrostis pectinacea var. pectinacea Lowell Ahart 1977-7-10 1493 Butte 3 miles northeast of Honcut 50 Comment
  CHSC102726  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC42375  Eragrostis pectinacea var. pectinacea Lowell Ahart 1987-5-27 5697 Butte 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
  UCD34843  Eragrostis pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Comment
  UCD65676  Eragrostis pilosa var. pilosa L. Ahart 1977-8-14 1552 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 15 Comment
  CHSC105793  Eremocarpus setiger Lowell Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam. 243 Comment
  NY43577  Eremocarpus setigerus S. Bianco 1995-1-9 1024 Butte Messilla Valley Rd, 0.8km from interection of Durham & Pentz Rd 134 Comment
  CHSC101490  Eremogone cliftonii Samantha Mackey Hillaire 2008-6-10 1253 Butte Lassen National Forest. Powerline survey, approx. 1.4 air miles east of Flea Mountain to southern end of occurrence. Accessed from roads 24N13, 24N13A, 23N14Y, 23N22Y. Found plants on ridges between 636057.190602654, 4414774.7153736 in the north to 633268,739075563, 4410021.81676031 in the south. Elevation 3200-4292 feet. 989 Comment
  CAS-BOT-BC291279  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  CHSC103424  Erigeron canadensis Lowell Ahart 2009-11-19 16555 Butte On the west side of the trail, north side of the pond, about 30 yards northwest of the table, 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 239 Comment
  CAS-BOT-BC296824  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek Comment
  SD5419  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 Butte Above Jonesville 1800 Comment
  POM193097  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Butte County: Jonesville. 1550 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295950  Erigeron philadelphicus H. E. Brown 1897-4-15 195 Butte Near Clear Creek Comment
  UC1586605  Erigeron philadelphicus var. philadelphicus Vernon H. Oswald and Lowell Ahart 1991-5-13 4586 Butte between Canyon Drive and Oroville Dam Blvd East (opposite the spillway); Oroville Recreation Area, Dan Beebe Trail 137 Comment
  CHSC112630  Eriochloa acuminata var. acuminata Lowell Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  HSC97192  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte South side of O'Brien Rd., about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CAS-BOT-BC367999  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  POM193385  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville. 2050 Comment
  SBBG1660  Eriogonum vimineum H. and M. Dearing 1938-6-21 2044 Butte 15 mi N of Chico Comment
  CHSC28533  Eriogonum wrightii var. trachygonum M. S. Taylor 1979-11-15 2286 Butte In rocky tailings, North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC308153  Eriophyllum lanatum var. grandiflorum A. A. Heller; H. E. Brown 1902-5-7 5483 Butte Berry Canyon near Clear Creek Comment
  CHSC6702  Eriophyllum lanatum var. grandiflorum Marilyn Lee 1968-5-3 166 Butte North side of Skyway ca 8 miles E. of Chico. Comment
  RSA4146  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  SEINET10475233  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-5-27 Taylor 2734 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
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  UCD103168  Erodium cicutarium A. A. Heller 1914-4-21 11312 Butte Chico. Comment
  POM88746  Erodium macrophyllum C. C. Bruce 1897-04 1932 Butte [No location information on label.] Comment
  CHSC669  Erodium moschatum E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  UC1487262  Eryngium castrense Yusuf Sheikh and Lincoln Constance 1973-6-26 547 Butte 8.1 mi. s. of city limits Oroville; base of Sierra Nevada foothills Comment
  CHSC29105  Erythranthe bicolor M. S. Taylor; J. D. Jokerst 1980-4-27 2551 Butte On n side of Ponderosa Way, ca. 1/2 mi e of Nimshew Rd, ca. 1 mi s of Nimshew. 609 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
  CHSC113492  Erythranthe breviflora Lowell Ahart 2014-7-10 19615 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 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
  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
  CAS-BOT-BC153866  Erythranthe glaucescens A. A. Heller; H. E. Brown 1902-5-6 5461 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC44780  Erythranthe glaucescens R. Banchero 1980-4-7 96 Butte Ca 0.5 mi W of the Thermalito Forebay Picnic Area, ca 2.5 mi NW of Oroville. 91 Comment
  CHSC94687  Erythranthe guttata Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  SEINET14046240 Image available Erythranthe guttata Helena Barden 1941-1 Butte Road from Pines General Store, Yankee Hill, to Highway #24 Comment
  CAS-BOT-BC151461  Erythranthe latidens A. A. Heller 1940-5-13 15615 Butte Field 3 miles west of Chico on State Highway #32 Comment
  SEINET8340799  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte on the Chico-Hamilton road, 6 miles from Chico in a low grain field. Comment
  CHSC3634  Erythranthe nasuta Alice L. Stoll 1966-2-28 30 Butte 7.9 miles N.E. of First and Main Streets, Chico. Salmon Hole, Upper Bidwell Park. Comment
  CHSC44779  Erythranthe nasuta R. Banchero 1980-3-15 64 Butte Along Cohasset Hwy 11.9 mi N of Chico, 5.6 mi NE of first jct of Cohasset Hwy and Rock Creek Rd. 323 Comment
  CHSC44781  Erythranthe nasuta R. Banchero 1980-3-21 74 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 Comment
  CHSC45025  Erythranthe nasuta Cathy Young 1988-4-23 10 Butte 1/4 mi w of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC23444  Erythranthe primuloides K. R. Stern 1974-6-30 5778 Butte Bank of Jones Creek, at Jonesville. Comment
  CHSC2477  Erythronium multiscapideum W. Fitzwater 1958-4-19 Butte Chico canyon, Chico area. 365 Comment
  CHSC31848  Erythronium multiscapideum L. Ahart 1977-3-28 1231 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UC1485464  Erythronium multiscapideum M. S. Taylor 1981-4-8 3518 Butte serpentine ridge on n side of Concow Rd ca 3/4 mi s jct with Ponderosa Way (ca 6 air mi n of Jarbo Gap on Hwy 70, ca 21 air mi n of Oroville); Pulga SW Quad 853 Comment
  SEINET10469549  Erythronium multiscapideum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 A Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  UC398692  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole Chico Creek (e of Chico) Comment
  CHSC24876  Eschscholzia californica M. B. Simpson 1976-4-4 13 Butte Ca. 2 yds w of Cohassett Hwy, ca. 7 mi n of Chico. 109 Comment
  SEINET12091620  Eschscholzia glyptosperma D. K. Aust 1981-1 3 Butte Bidwell Park, Chico, ca 200 yds W of Horseshoe Lake, Wildwood Ln, 2.5 mi W of Manzanita Road; 107 Comment
  CHSC30972  Eschscholzia lobbii Joann Lacey 1979-3-16 5 Butte Ca. 1.1 mi ne of jct of Humboldt Rd. and Stilson Canyon Rd., ca. 3.9 mi ne of Chico. 129 Comment
  UC1594722  Eucephalus breweri Lowell Ahart 1992-7-29 6889 Butte ca 3/4 mi nw of, (ca 1 mi ne of Carr Mine) Lotts Lake 1798 Comment
  CHSC44277  Euonymus occidentalis var. occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek Reservoir. Near the creek. 1028 Comment
  UCD142580  Euphorbia maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi. W of Chico. 40 Comment
  SEINET10453773  Euphorbia ocellata Mary Susan Taylor Taylor 322 Butte 61 Comment
  RSA70383  Euphorbia ocellata var. ocellata F. W. Peirson 1923-7-21 3760 Butte north of Chico. Comment
  CHSC26766  Euphorbia peplus P. Moyer 1972-3-4 107 Butte CSUC Campus. Next of Chicano Center, 2nd and Ivy. 60 Comment
  JEPS119577  Euphorbia peplus Lowell Ahart 2012-4-17 17877 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
  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
  CHSC43242  Euthamia occidentalis Lowell Ahart 1987-9-29 5906 Butte On a road cut near a wash, near the dirt road, about 1 mile east of the Golden Trout Crossing across the South Fork of the Feather River, about 2 miles west of the Sly Creek Reservoir. 1158 Comment
  JEPS110142  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
  CAS-BOT-BC278301  Festuca californica subsp. californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir 1005 Comment
  CHSC106593  Festuca elmeri B. Castro; L. P. Janeway 2001-3-17 1267 Butte Along USFS Rd 23N28, about halfway between Coyote Gap and Big Bar Mtn. 1249 Comment
  CHSC109547  Festuca microstachys L. P. Janeway 2012-6-7 10865 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
  CHSC113276  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC74164  Festuca subulata B. Castro; L. Gehrung 1998-7-2 798 Butte Ca 6 air mi NW of Brush Creek, ca 1 mi SE of Hungry Hunt Peak, ca 50 ft N of USFS Rd 23N28 as it loops around a drainage. 1021 Comment
  CHSC98943  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CHSC12611  Ficus carica S. Posner 1972-9-24 Butte Ca. 150 yds S of Humbug Road, 3 mi E of Skyway. Comment
  RSA755423  Filago gallica L. Ahart 2009-5-30 15809 Butte West side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile west of the intersection of Highway 32 and Ten Mile House Road. 441 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
  CHSC50551  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4340 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. Along the south boundary fence in section 27. 1780 Comment
  CAS-BOT-BC437079  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC62936  Frangula californica subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia. 731 Comment
  CAS-BOT-BC62946  Frangula californica subsp. tomentella Lowell Ahart 1968-5-8 972 Butte Peter Ahart Ranch, Honcut. 150 Comment
  HSC104024  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 Butte Southwestern spur of Rocky Ridge, 0.6 air km. south of Batchelor Point; along Forest Service Rd. 23N06E, 0.8 km SE of Rim Road/Ponderosa Way. 895 Comment
  CHSC34188  Frangula purshiana L. Ahart 1981-9-15 3175 Butte Along edge of road on w side of Sly Creek Reservoir, ca. 1/2 mi n of Sly Creek Dam. 1150 Comment
  CHSC48837  Frangula purshiana Vernon Oswald 1987-6-29 3042 Butte Bald Mt., 1.1 mi (odometer) sw of the Lookout. 1645 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-BC130314  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Forbestown Site, on road from Forbestown to Woodleaf Comment
  SBBG17373  Fritillaria eastwoodiae M. Vincent 1962-4-15 179 Butte Coutolenc Rd, 0.5 mi N of Magalia Comment
  SDSU19718  Fritillaria eastwoodiae Sean Ryan 2010-4-17 36 Butte Off hwy 70, along east side of Old Truex Road, approximately 90 yards SW of the intersection of Truex Road and Trevor Road, just north of Lake Oroville. North facing steep roadcut. 302 Comment
  CAS-BOT-BC124015  Fritillaria eximia Mrs. J. H. Morrison 1932-3-20 s.n. Butte On the Pence grade, east of Paradise Comment
  CAS-BOT-BC130424  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  POM225409  Fritillaria recurva Anonymous, Flower Show 1929-04 Butte [no additional locality information] Comment
  UC1586559  Galium aparine Lowell Ahart 1991-4-19 6646 Butte steep slope on w side North Honcut Creek (about 1 1/2 mi n and 2 3/4 mi e of Honcut, about 12 mi se of Oroville); Peter Ahart Ranch 45 Comment
  CHSC107270  Galium bolanderi L. P. Janeway 2011-6-29 10405 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
  SD4930  Galium bolanderi E. B. Copeland 1930-7-16 476 Butte Jonesville, damp meadow 1500 Comment
  CHSC48884  Galium divaricatum Vernon Oswald 1985-5-1 1741 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the S edge of the Golf course. 97 Comment
  POM60708  Galium nuttallii var. tenue A. A. Heller, H. E. Brown 1902-5-6 5454 Butte Berry Canyon (near Clear Creek). Comment
  JEPS127203  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  JEPS3305  Galium parisiense Roxana S. Ferris 1952-5-16 12475 Butte 5 mi s Cherokee (on road to Oroville) Comment
  SEINET5550943  Galium parisiense H. S. Gentry, S. Koch 1962-1 19783 Butte 7 mi. NE of USDA Field Station, Chico, along road to Centerville. 152 Comment
  CHSC20046  Galium porrigens var. tenue M. S. Taylor 1975-4-25 495 Butte Ca. 1/2 mi E of Cohasset Hwy, ca. 10 mi N of Chico. Comment
  CHSC27950  Galium porrigens var. tenue M. S. Taylor 1979-3-20 1940 Butte Ca. 1 mi N of jct of north fork Feather River, along an old road, ca. 10 mi N of Oroville. 304 Comment
  CHSC55586  Galium porrigens var. tenue Dan Morgan 1991-4-21 19 Butte Indian Springs Rd., .3 mi W of Neal Rd., Paradise. 243 Comment
  CHSC11819  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  RSA712784  Galium triflorum L. P. Janeway 1994-7-5 4680 Butte Northern High Sierra Nevada. NE side near top of ridge 0.7 miles ESE of Flea Mtn. 0.3 miles ESE of Campbell Meadow. 1159 Comment
  UC1948358  Gamochaeta argyrinea John L. Strother with Richard L. Moe 2012-5-17 1373 Butte ca. 8 km southwest of Oroville, east side of Thermalito Afterbay at Larkin Road boatlaunch ramp Comment
  CAS-BOT-BC169931  Garrya fremontii John Thomas Howell 51082 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on Skyway to Chico 396 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
  UC1594706  Gastridium ventricosum Lowell Ahart 1992-5-9 6755 Butte about 1 1/2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  HSC87163  Gayophytum heterozygum Robert Banchero, Robert A. Schlising 1980-7-28 3926 Butte Chico Meadows, 1 mi. N of Butte Meadows 1317 Comment
  UC398937  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Butte Creek Jonesville Comment
  CHSC29403  Gayophytum humile R. A. Schlising; R. Banchero 1980-6-12 3717 Butte Chico Meadows, off Scout Road 1.1 mi N of Butte Meadows jct of Humboldt Road and Skyway/Humbug Road; dry margins of meadows and at streamsides. 1316 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
  CHSC84630  Genista monspessulana A. Rutherford 2002-4-30 4 Butte Paradise Lake, Lucretia Road. Comment
  CHSC94438  Gentianopsis simplex L. P. Janeway 2006-8-12 8846 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. 1695 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  SEINET10495123  Geranium dissectum Mary Susan Taylor 1982-4-28 Taylor 4353 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS103246  Geranium molle Lowell Ahart 2002-5-7 9625 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
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  RSA31676  Gilia capitata subsp. mediomontana A. A. Heller 1938-5-28 15112 Butte along the Feather River Highway, 22 miles from Oroville Comment
  CHSC1257  Gilia tricolor J. Gulick 1929-3-17 Butte Oroville. 53 Comment
  CAS-BOT-BC266484  Githopsis diffusa Lowell Ahart 1987-5-12 5651 Butte S of Lumpkin Ridge Road, 1.5 miles NE of Camp 18, about 8 miles NE of Feather Falls 1280 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
  CAS-BOT-BC266582  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  SEINET10460581  Githopsis pulchella subsp. campestris Hoover 1937-5-18 HOOVER 2236 Butte 3 miles north of Chico Comment
  CHSC51368  Glinus lotoides Vernon Oswald; Lowell Ahart 1990-10-11 4460 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. Occasional plants on drying mud on the bed of Dark Canyon Creek, below the high-water line of the lake. 243 Comment
  SEINET10508575  Glyceria occidentalis Lowell Ahart 1983-4-18 Ahart 3936 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET10473776  Gnaphalium chilense Mary Susan Taylor 1975-4-25 Taylor 503 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  SEINET10474675  Gnaphalium palustre Lowell Ahart 1985-11-7 Ahart 5239 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CDA13240  Goodyera oblongifolia G. F. Hrusa, T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC115210  Gratiola ebracteata Lowell Ahart 2015-5-5 20140 Butte Bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about one mile south west of the Oroville Airport, about 6 miles (air) south west of Oroville. 42 Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, on the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  POM161686  Hackelia nervosa E. B. Copeland 1929-7-17 s.n. Butte About Jonesville. 2000 Comment
  CHSC100808  Hastingsia alba R. A. Schlising 1980-7-8 3864 Butte Several miles NE of Butte Meadows, just north of Butte Creek and west of Cherry Hill Campground. 1402 Comment
  JEPS119776  Hedypnois rhagadioloides Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 west of Highway 32, south part of Upper Bidwell Park, about 8 /12 miles (air) northeast of Chico. Comment
  CHSC28507  Helenium puberulum M. S. Taylor; J. D. Jokerst 1979-10-13 2255 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 5 mi e of Paradise, ca. .8 mi n of its jct with Concow Rd. 426 Comment
  CHSC102959  Helianthus bolanderi Lowell Ahart 2009-8-3 16265 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 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  UCD146601  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte above Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  CHSC34012  Heliotropium curassavicum L. Ahart 1981-7-26 3000 Butte Along edge of the rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  SEINET12636497  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Avenue. 92 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
  CAS-BOT-BC305847  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 mile north of Highway 162, about 2 1/2 miles north-west of Biggs 28 Comment
  CHSC60827  Herniaria hirsuta subsp. hirsuta Vernon H. Oswald; Lowell Ahart 1993-6-22 5556 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. At roadside. 1091 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
  CHSC27306  Hesperevax caulescens T. B. Devine 1977-5-22 403 Butte Wurlitzer Ranch (west) Vina Prairie, field, next to Haile Road ca 1 mi sw of Hwy 99. 57 Comment
  CHSC46922  Hesperevax caulescens Lowell Ahart 1962-5-11 7 Butte Open pasture fields, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET260315  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Honcut Flume on the Joie Osgood Ranch ca 2 mi N and 2.5 mi E of Honcut 76 Comment
  OBI74994  Hesperocyparis macnabiana Hannah M. Fugle 2011-1-17 4 Butte Magalia, ca 250 ft E of Coutelenc rd, 0.1 mi up Coutelenc rd from Skyway rd 762 Comment
  RSA107426  Hesperolinon micranthum L. S. Rose 1955-6-15 s.n. Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  UC203614  Hesperolinon micranthum A. A. Heller 1914-7-22 11587 Butte Little Summit 1463 Comment
  CHSC54876  Heteranthera limosa Vernon H. Oswald; Lowell Ahart 1991-8-28 4851 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  UC1586511  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1991-8-28 4851 Butte sw side of Hwy 162 ca 3.5 mi nnw Biggs; Rice Experiment Station 30 Comment
  CHSC11860  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville. 1550 Comment
  CHSC39533  Heterocodon rariflorum Lowell Ahart 1983-6-12 4040 Butte Along the edge of aroad 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
  CHSC44276  Heterocodon rariflorum Vernon Oswald 1988-6-14 3379 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Peak. 890 Comment
  JEPS127014  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  SEINET10460590  Heterocodon rariflorum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4727 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  SEINET10460747  Heterocodon rariflorum Mary Susan Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 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
  JEPS115158  Heteromeles arbutifolia Lowell Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yareds south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 242 Comment
  CHSC83119  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 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
  RSA0062978  Heuchera micrantha var. erubescens James R. Shevock 1972-5-19 1785 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  CHSC11827  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville. 1600 Comment
  CHSC69039  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 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
  UC897798  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC50670  Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte Along the north edge of the dirt road, along the road to the Forbestown Reservoir, about 2 miles north-east of Forbestown. 822 Comment
  UC1562435 Image available Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte about 2 mi ne Forbestown (along the road to the Forbestown Reservoir) 822 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
  SEINET10507462  Holcus lanatus Mary Susan Taylor 1978-6-24 Taylor 1662 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 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
  CHSC82710  Hordeum murinum subsp. leporinum Tara Morgan 2002-4-23 47 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  CHSC56635  Hordeum vulgare J. Lund 1980-4-28 Butte 0.3 mi south of Palermo on Hwy 99. 76 Comment
  CHSC52126  Horkelia fusca subsp. parviflora L. P. Janeway 1988-6-25 2863 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from The Skyway. 1554 Comment
  CAS-BOT-BC532316  Horkelia fusca var. parviflora V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC4584  Horkelia tridentata C. Glascock 1965-5-11 379 Butte 14.15 mi. nw of Russell Dr. (south Paradise) and ca. 100 yds upstream from the upper end of De Sabla reservoir, on stream bank at w roadside of Stirling Ciry hwy. Comment
  UCD113553  Horkelia tridentata L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC536257  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC45283  Hosackia incana Vernon Oswald 1987-6-29 3040 Butte Bald Mt., 0.4 mi s of the Lookout. 1706 Comment
  CHSC71638  Hosackia oblongifolia var. oblongifolia Vernon H. Oswald 1998-8-11 9465 Butte USFS 23N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  CHSC6655  Hydrangea M. MacArthur 1968-6-23 287 Butte Ca. 20 ft. SW PSA bridge and 25 ft. NW of Big Chico Creek, Chico State College. 60 Comment
  JEPS124302  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CDA15322  Hydrocotyle umbellata D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  CHSC31156  Hydrophyllum occidentale M. S. Taylor 1979-5-4 1997 A Butte Along Millsap Bar Rd in shady road embankment, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC39522  Hypericum concinnum Lowell Ahart 1983-6-21 4059 Butte Along Bloomer Hill Road on the high cut-bank, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CHSC95107  Hypericum concinnum L. P. Janeway 2006-7-9 8805 Butte High Cascade Ranges. Doe Mille Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  SJSU768  Hypericum concinnum A. W. Jacobs 1942-6-26 Butte c. 22 mi NE of Oroville on Hwy 24 Comment
  CAS-BOT-BC312926  Hypochaeris glabra M. S. Taylor 1981-4-28 3568 F Butte Along Four Trees Rd, ca. 1 mi e of Hwy 70, ca. 2 mi ne of Pulga 670 Comment
  CAS-BOT-BC133552  Iris hartwegii Lowell Ahart 1980-5-19 2316 Butte 1 mile E of Golden Trout Crossing 900 Comment
  CHSC116977  Iris macrosiphon Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC24780  Iris macrosiphon D. E. Hale 1976-4-10 16 Butte N side of Vilas Rd, ca. 25 m e of Vilas Rd. - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  CHSC90010  Iris macrosiphon Ross Rowland 2001-3-28 13 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  SEINET3876030  Iris macrosiphon D. W. McNeal, Todd McIntyre 1989-4-18 3369 Butte Shady oak woodland on the margin of a barren serpentine outcrop above Lunt Rd., 0.4 mi. North of Highway #70.; 0 Comment
  SEINET8752804  Iris macrosiphon M. J. Williams 1967-4-15 s.n. Butte Near Magalia Comment
  SBBG40332  Iris tenuissima J. Ingram, A. Ingram 1960-4-6 500 Butte Endicot Springs on Neal Rd, S of Paradise Comment
  CHSC49639  Iris tenuissima subsp. purdyiformis Vernon Oswald 1985-5-16 1761 Butte Humboldt Rd. to Butte Meadows, 2.0 mi ne of Hwy 32. 1371 Comment
  CDA19115  Isatis tinctoria Harrie D. Riley, Ernie Simpson 2001-4-27 PDR 1170765 Butte Sacramento Valley; Vicinity of Chico. Approx 1/5 mi on E side of Mud Creek and N side of Hwy 32 0 Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  CHSC30017  Isoetes nuttallii L. Ahart 1980-5-17 2271 Butte 1/8 mi se of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  SEINET10530330  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2443 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CAS-BOT-BC340243  Jensia rammii Lewis S. Rose 1937-6-10 37357 Butte Hurleton 579 Comment
  CAS-BOT-BC340246  Jensia rammii Lowell Ahart 1983-6-26 4157 Butte Along Ponderosa Way, about 2 1/2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 1/2 miles north-east of Oroville 600 Comment
  CHSC3365  Juglans californica var. hindsii M. Gregg 1966-4-11 90 Butte On the Nature Trail in Bidwell Park, Chico. Just off of E. 8th St. Comment
  CHSC6617  Juglans regia M. MacArthur 1968-6-13 307 Butte Parkinbg lot NE of Building U, Chico State College campus. 60 Comment
  CHSC31841  Juncus acuminatus L. Ahart 1975-6-19 797 Butte Along edge of North Honcut Creek. Peter Ahart Ranch,Honcut. 50 Comment
  JEPS94727  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte about 7 air mi n of Oroville (w 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
  CHSC57154  Juncus bufonius var. bufonius J. D. Jokerst 1980-3-26 Butte East of Chico: 100 m northeast of junction of Skyway and Bruce Road. Comment
  JEPS107944  Juncus bufonius var. bufonius Lowell Ahart 2005-5-2 11775 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
  JEPS98590  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 Comment
  CHSC61518  Juncus bufonius var. congestus Lowell Ahart 1993-5-15 6940 Butte Fallow rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC112909  Juncus capitatus B. Castro; Robin Carter 2011-4-29 1871 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC116708  Juncus capitatus Lowell Ahart 2016-5-15 20833 Butte On the 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
  RSA304353  Juncus capitatus Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch, ca 2 1/2 miles NNE of Honcut, between Marysville and Oroville. 30 Comment
  CHSC112461  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC39021  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte North edge of Black Bart Road ca. 1/2 mile west of its junction with the Oroville-Forbestown Road. 700 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side 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
  CDA42850  Juncus effusus var. effusus L. Ahart 2011-8-19 17636 Butte About 30 yards east of Know-nothing Creek, in low area on the north side 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. Comment
  CDA37217  Juncus effusus var. exiguus CDFA Staff 2004-10-18 s.n. Butte Thermalito Afterbay. 0 Comment
  SEINET10472477  Juncus effusus var. pacificus Lowell Ahart 1983-8-16 Ahart 4299 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC69728  Juncus ensifolius Lowell Ahart 1997-10-20 7928 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CDA39194  Juncus ensifolius T. C. Fuller 1962-7-12 9203 Butte 2 miles east of Butte Meadows. 0 Comment
  SEINET11787184  Juncus howellii Unknown 1983-1 4294 Butte along stream that flows into Butte Creek, 1 mi E of Butte Meadows 1450 Comment
  SEINET10472451  Juncus leiospermus Mary Susan Taylor 1980-5-15 Taylor 2630 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-BC110147  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-18 1648 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31910  Juncus leiospermus var. ahartii L. Ahart 1974-4-24 423 Butte In small vernal pool. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS104262  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS110153  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12584 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  JEPS122155  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-2 19422 Butte About 1/2 mile north of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CAS-BOT-BC110771  Juncus mertensianus V. Oswald; L. Ahart 1988-7-29 3652 Butte Ca. 5 miles (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2097 Comment
  SEINET10472481  Juncus mertensianus subsp. gracilis Mary Susan Taylor 1978-7-18 Taylor 1719 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  SEINET10872270  Juncus mertensianus subsp. gracilis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4755 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC105686  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area 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. 1899 Comment
  CHSC99745  Juncus occidentalis Lowell Ahart 2008-6-13 14816 B Butte Along a small road, small meadow, bottom of an old gold mined area, about 180 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 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
  CHSC78341  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC113516  Juncus oxymeris Lowell Ahart 2014-7-7 19595 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 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
  CHSC29984  Juncus tenuis J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-4-7 551 Butte 1.0 mi E of Palermo-Honcut Hwy, 50 m S of Melody. 48 Comment
  CHSC31911  Juncus tenuis L. Ahart 1977-6-13 1415 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS113857  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  UCD169268  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte On the north side of the South Fork of the Feather River. About 50 yards east of where Sucker Creek enters the South Fork of Feather River. About 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  CHSC96543  Juncus triformis Lowell Ahart 2007-5-22 13902 Butte Northeast of Little Bald Rock, about 300 yards east of Bean Creek road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC31924  Juncus uncialis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-5-16 840 A Butte N of and adjacent to Humboldt Rd., 0.1 mi W of its junction with the Skyway in the community of Butte Meadows. 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
  JEPS121895  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte Below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  CHSC62132  Keckiella breviflora var. glabrisepala B. Castro 1987-5-21 120 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  CHSC43759  Keckiella corymbosa Vernon H. Oswald 1986-7-21 2213 Butte Little Butte Creek canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  UC195387  Kelloggia galioides A. A. Heller 1914-7-22 11582 Butte Little Summit 1463 Comment
  JEPS115062  Kickxia elatine Lowell Ahart 2007-10-31 14519 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CHSC31709  Koeleria phleoides Lowell Ahart 1974-4-14 412 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31959  Koeleria phleoides J. D. Jokerst 1979-5-2 1216 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC33693  Kumlienia hystricula L. Ahart 1981-4-29 2717 Butte Along edges of a small stream near Ponderosa Dam, near Forbestown. 500 Comment
  CAS-BOT-BC340330  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  UCD141219  Kyllinga brevifolia B. Crampton 1962-2-20 s.n. Butte Oroville. Comment
  CAS-BOT-BC274279  Lachnagrostis filiformis Lowell Ahart 1986-11-14 5468 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
  SEINET10473868  Lactuca saligna Mary Susan Taylor 1977-8-16 Taylor 1443 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  JEPS115713  Lactuca scariola var. integrata Lowell Ahart 2009-8-3 16251 Butte On the east side of Ten Mile House Road, just northeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 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
  CHSC31536  Lagophylla glandulosa L. Ahart 1979-5-20 1879 Butte On bottom of wash. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC341305  Lagophylla glandulosa H. M. Hall 1914-8-1 9829 Butte Foothills near Bidwell Bar, (Mt. Ida) Comment
  CHSC46211  Lagurus ovatus Pauleen Broyles 1985-5-14 943 Butte Town of Paradise. Overlooking w branch of North Fork Feather River, in yard of a private home at 5190 Country Club Dr. On e side of the house. 522 Comment
  JEPS103412  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the W edge of the Midway, ca 1 mile N of Richvale. 30 Comment
  CHSC113441  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC30691  Lasthenia californica M. S. Taylor 1980-3-1 2352 Butte Near Elliot Spring House, s side of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC40551  Lasthenia californica Ahart; Jokerst 1985-3-24 4869 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
  POM29967  Lasthenia californica C. C. Bruce 1897-12 2071 Butte [Unspecified] Comment
  POM361506  Lasthenia californica A. A. Heller 1914-4-3 11260 Butte 8 miles from Oroville. Comment
  SEINET10971149  Lasthenia chrysostoma Mary Susan Taylor 1974-3-3 Taylor 67 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CHSC33352  Lasthenia fremontii R. M. Winchell 1980-4-23 4 Butte N of Chico. Between Singer Creek and Cana-Pina Road. Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC46948  Lasthenia fremontii Lowell Ahart 1978-5-1 1694 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC893757  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  HSC85968  Lasthenia glaberrima J. Hunter 1986-4-12 49 Butte Vacant lot within the city of Chico, ca. 45 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  UCD73060  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  UCR227351  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CAS-BOT-BC213337  Lathyrus jepsonii subsp. californicus Peter H. Raven 1953-5-9 5426 Butte 8 miles from Bangor on Oroville Road Comment
  SEINET10451847  Lathyrus jepsonii subsp. californicus Mary Susan Taylor 1978-7-21 Taylor 1833 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
  CHSC48507  Lathyrus nevadensis var. nevadensis Vernon Oswald 1985-4-29 1731 Butte Bald Rock Rd. 0.3 mi ne of the trailhead to Big Bald Rock. 975 Comment
  UCD169101  Lathyrus odoratus Ramona Robison 2013-4-15 2 Butte Clay Pit State Vehicular Recreation Area. 41 Comment
  CDA15364  Lathyrus sulphureus G. F. Hrusa 1997-5-29 13801 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC109080  Laurus nobilis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17908 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  UCD133917  Layia fremontii Michael A. Vincent; Ethan H. Freid 1998-4-6 8113 Butte Table Mountain. Comment
  UCR227350  Layia fremontii Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CAS-BOT-BC321776  Layia fremontii Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  HSC23334  Layia fremontii Willis Ball 1970-3-7 83 Butte Immediately E of Chico Municipal Airport, Chico Comment
  CAS-BOT-BC249064  Layia platyglossa George K. Helmkamp; E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley: W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. 43 Comment
  HSC97027  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the S side of Sheldon Avenue at the intersection with Larkin Rd., ca. 1 mi. S of Gridley Rd., ca. 2 air mi. SE of Gridley. 28 Comment
  CAS-BOT-BC339121  Leontodon saxatilis subsp. saxatilis John Thomas Howell; Gordon H. True 1967-6-13 42593 Butte Oroville 51 Comment
  CHSC35764  Lepidium appelianum R. A. Schlising; J. D. Jokerst 1982-6-4 4287 Butte N of Oroville and n of Jarbo Gap along Hwy 70 above Feather River Canyon. Roadside. Comment
  CHSC35647  Lepidium nitidum R. E. Preston 1982-4-7 231 Butte In dirt rd at side of Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  SEINET10907265  Lepidium nitidum Mary Susan Taylor 1974-3-26 Taylor 88 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  CHSC94004  Lepidium strictum R. Fischer 2005-4-10 676 Butte Collection from along Hwy. 32, ca. 4 miles north of Chico in Bidwell Park. On the road bed of the 10 Mile House Road at the trail head. 457 Comment
  UC569494  Leptochloa fascicularis H. S. Yates 1936-8-14 6121 Butte 3 mi nnw Nelson; Chico Quadrangle 30 Comment
  CAS-BOT-BC273951  Leptochloa fusca subsp. fascicularis E. M. Johnston 1915-1-1 s.n. Butte Biggs Comment
  CHSC110334  Leptochloa fusca subsp. fascicularis B. Castro 2011-10-19 1915 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek ca 0.6 mi downstream (W) of its crossing under the Cohasset Hwy bridge and ca 500 ft E of its confluence with Sheep's Hollow. Depression in low flat floodplain on N side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC84008  Leptochloa fusca subsp. fascicularis Lowell Ahart 2003-6-22 10298 Butte On the south side of Richvale Highway, about 50 yards east of railroad, Richvale. 32 Comment
  UCD63782  Leptochloa fusca subsp. fascicularis E. M. Johnston 1915-1 Butte Biggs. Comment
  CHSC45450  Leptosiphon acicularis Lowell Ahart 1979-4-22 1834 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
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Jul 19 2018
  CHSC45451  Leptosiphon androsaceus Lowell Ahart 1979-4-3 1820 Butte On slope near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM73982  Leptosiphon bicolor C. C. Bruce 1897-04 1962 Butte Butte Creek Comment
  CHSC101132  Leptosiphon ciliatus Lowell Ahart 2009-5-15 15678 Butte About 20 yards east 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. 235 Comment
  CHSC41368  Leptosiphon filipes B. Castro 1982-4-21 26 Butte Vernal pool area, 0.3 mi w of jct with Hwy 99 on Broyles Rd, ca 10 mi nw of Chico. 60 Comment
  CHSC27960  Leptosiphon harknessii M. S. Taylor 1978-7-19 1772 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CAS-BOT-BC341789  Lessingia nemaclada John Thomas Howell 1962-6-16 37551 Butte Magalia 731 Comment
  CHSC30274  Lessingia nemaclada M. S. Taylor 1979-9-9 1918 Butte On w side of Bull Run Rd., ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC69448  Lessingia nemaclada Lowell Ahart 1997-9-6 7887 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC45654  Leucanthemum vulgare Vernon Oswald 1987-6-12 2992 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC42032  Leucothoe davisiae Lowell Ahart 1986-8-15 5388 Butte South of the dirt road, about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City. 1493 Comment
  SEINET10572653  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2673 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
  SEINET10531251  Libocedrus decurrens Edwin B. Copel 1931-7-28 Copeland s.n. 1931 Butte Jonesville, On ridge west of North Willow Creek. 1650 Comment
  CHSC34799  Ligusticum californicum M. S. Taylor 1981-5-15 3750 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CAS-BOT-BC130565  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC46224  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1060 Butte Ca. 2.0 km s of Inskip on W. side of Skyway. 1400 Comment
  CHSC30287  Lilium pardalinum subsp. shastense M. S. Taylor; R. A. Schlising 1980-7-6 3069 Butte On side of Old Humboldt Rd, ca. 0.8 mi ne of Cherry Hill Campground. 1463 Comment
  UC436287  Lilium washingtonianum subsp. washingtonianum E. B. Copeland Jul 1930 Butte Jonesville 1600 Comment
  CHSC46293  Limnanthes alba subsp. alba Vernon Oswald 1989-5-11 3763 Butte Santos Rd between Hwy 32 and Doe Mill Ridge, s of Little Chico Creek. 335 Comment
  JEPS106505  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Chico. Meghdadi Property in SE Chico; about 0.5 km N of Doe Mill Road, about 0.5 km E of S end of Potter Road, and 0.25 km W of old stone fence. Comment
  CHSC62831  Limnanthes douglasii subsp. rosea Ella Icard 1893-4-1 Butte Comment
  SEINET6670565  Limnanthes douglasii subsp. rosea R. McKee 1909-1 s.n. Butte Chico Comment
  UCD116440  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) Comment
  RSA758833  Limnophila Peter Fritsch, Boni Cruz 2005-9-1 1790 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. North corner of Riceton Road and Hamilton Road. Comment
  JEPS103303  Limosella aquatica Lowell Ahart 2002-4-14 9483 Butte Area between the Railroad and the Midway Road, 50 yards S of Nelson Dlavo Road, in Nelson. 36 Comment
  RSA769681  Linanthus bicolor L. Ahart 2009-4-22 15585 Butte Along Guardians Trail, just south of 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. 382 Comment
  UC600667  Linanthus ciliatus H. F. Copeland 1931-6-11 1530 Butte above Butte Creek Meadows; Jonesville 1828 Comment
  CHSC62123  Linanthus dichotomus B. Castro; R. A. Schlising, L. P. Janeway 1987-4-4 52 Butte Ca 1 mi N of Magalia on the N side of Ponderosa Way, ca 0.1 mi E of its jcn with Coutolenc Rd. 716 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
  CHSC50689  Lindernia dubia var. anagallidea Lowell Ahart 1990-5-25 6485 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
  CHSC66679  Lindernia dubia var. anagallidea Vernon H. Oswald; Lowell Ahart 1996-7-22 8083 Butte U.S. Fish and Wildlife service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge. Llano Seco Unit. 30 Comment
  SEINET12186146  Linum lewisii Unknown 1985-1 4993 Butte 1/8 mi E of the dirt rd, about 1.5 mi NE of Concow of Reservoir 732 Comment
  SEINET12186145  Linum micranthum Unknown 1985-1 5085 Butte about 2.5 mi NE of Forbestown, roadside to the Forbestown Reservoir 869 Comment
  CHSC55617  Lipocarpha aristulata L. P. Janeway; C. A. Janeway 1986-10-4 1902 B Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  CHSC68910  Listera convallarioides Lowell Ahart 1997-7-11 7745 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  SEINET10483002  Lithophragma Mary Susan Taylor 1981-5-22 Taylor 3798 Butte T23N R5E ne/se sec 30, Pulga quad. Top of ridge nder powerlines, ridge N of Flea Valley Creek drainage and above Pulga, ca. 5 air mi E of Magalia. 3621 ft. 1104 Comment
  SEINET10871263  Lithophragma Mary Susan Taylor 1981-5-13 Taylor 3695 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
  CHSC2819  Lithophragma bolanderi David Prall 1965-3-14 9 Butte At edge of cliff ca. 30 yds. south of Neal Rd. 1mile East of HW 99E. 106 Comment
  POM142577  Lithophragma bolanderi Copeland 1903-4-11 3041 Butte Chico Comment
  SFV10398  Lithophragma bolanderi M. L. Vincent 1964-4-9 540 Butte 1.5 miles from Alternate Route 40, north on Pentz Road. Comment
  CAS-BOT-BC432268  Lithophragma campanulatum A. A. Heller 1915-6-10 11955 Butte Little Summit in the Sierra Nevada 1371 Comment
  JEPS108980  Lithospermum californicum Lowell Ahart 2006-6-9 12641 Butte In the center 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
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CAS-BOT-BC342383  Logfia gallica John Thomas Howell 1961-9-22 36742 Butte Bottom of Feather River, Oroville 53 Comment
  CHSC2160  Lolium multiflorum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CHSC31418  Lolium multiflorum L. Orme 1980-3-14 1 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of field. 55 Comment
  JEPS110446  Lolium multiflorum Lowell Ahart 2005-12-11 12519 Butte On the sides of small ditches, on the 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
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  UC765468  Lomatium caruifolium var. denticulatum R. F. Hoover 1938-4-24 3238 Butte 3 mi. n. Chico Comment
  CHSC60646  Lomatium dissectum var. multifidum Vernon H. Oswald 1993-4-12 5257 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. P 341 Comment
  CHSC26811  Lomatium marginatum M. S. Taylor 1978-5-6 1597 Butte Magalia. 609 Comment
  CHSC46327  Lomatium marginatum Lowell Ahart 1989-5-26 6273 Butte Just below the high water line 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. 51 Comment
  CHSC33347  Lomatium utriculatum Laurel L. Huey 1980-4-21 4 Butte Ca. 80 m se of Butte Creek at Covered Bridge. 125 Comment
  CHSC101834  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail. 381 Comment
  CHSC51218  Lonicera involucrata var. involucrata L. P. Janeway 1987-6-19 2245 Butte Strawberry Valley Cr at crossing of Barton Hill Rd 2.4 mi from Travis Saddle and the Challenge-LaPorte Rd. 1051 Comment
  CHSC109866  Lonicera maackii L. P. Janeway 2012-5-2 10814 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  UCD107081  Lopezia racemosa subsp. racemosa N. Adams 1931-2-28 s.n. Butte Chico. Comment
  SFV1836  Lotus humistratus B. Fuller 1962-5-26 s. n. Butte Sierra Nevada Near Stearns Road and Harrison Road. Rocky hillside near road. 535 Comment
  SEINET10451972  Lotus humistratus Mary Susan Taylor 1978-5-6 Taylor 1571 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CDA34221  Lotus micranthus L. Ahart 2010-6-9 16778 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  JEPS113569  Ludwigia palustris Lowell Ahart 2007-7-27 14391 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 51/2 mi (air) W of Oroville 36 Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  CHSC1135  Ludwigia peploides subsp. peploides D. Bower 1953-7-16 Butte 3A Llano Seco. Marsh. 30 Comment
  CHSC42531  Lupinus albicaulis var. albicaulis Lowell Ahart 1987-5-22 5681 Butte Along the dirt road, near a small bog or meadow, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  POM161687  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 s.n. Butte Jonesville. 1600 Comment
  UC398928  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte above Jonesville; above Jonesville 2000 Comment
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  CHSC62830  Lupinus bicolor Ella Icard 1893-1-1 Butte Comment
  CHSC90018  Lupinus bicolor Rebecca L. Hill 1990-4-7 10 Butte Ca. .4 mi ese on Clear Creek Cemetery Rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  SEINET7073625 Image available Lupinus bicolor A. G. Vestal 1955-5-21 s.n. Butte About 5.8 miles east of Oroville on the Olive Highway. UTM Zone 10, 631906mE, 4373738mN. Coordinate datum: NAD27. Comment
  SEINET10484922  Lupinus bicolor subsp. tridentatus Mcbride 1981-4-18 MCBRIDE 1 Butte Small population, 1.5 km e of chico and 1 km n of little chico creek. Open Area within transitional zone between valley loland and foothills. 90 Comment
  CHSC101706  Lupinus bicolor var. tridentatus Lowell Ahart 2009-4-26 15619 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  JEPS124189  Lupinus bicolor var. tridentatus Lowell Ahart 2015-3-24 19961 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC90512  Lupinus microcarpus var. densiflorus J. Marr 1988-3-18 4 Butte 50 ft on n side of Pentz Magalia Hwy, 1/4 mi nw of Hwy 70, 12 mi n of Oroville. 228 Comment
  CHSC36142  Lupinus nanus Don K. Aust 1981-4-15 19 Butte Ca. 1 mi n of Chico, e side of Cohasset Hwy. 60 Comment
  CHSC90370  Lupinus nanus Joseph Silveira 1982-4-17 5 Butte 65 m ene of Horseshoe Lake and 80 m n of Big Chico Creek, 4 km ne of Chico. 190 Comment
  UC204540  Lupinus nanus A. A. Heller 1914-4-21 11311 Butte Chico Comment
  UCD108986  Lupinus nanus A. A. Heller 1913-3-9 10682 Butte hills two miles north of Oroville. 91 Comment
  SEINET10490837  Lupinus nanus subsp. nanus Taylor 1981-5-14 Taylor 3528 Butte Oroville quad. Valley grassland, nw corner of the jct of wheelock rd and hwy 70, Ca 5 mi n of oroville. Associates: amsinckia intermedia. A migrant? (Comment by d.b. Dunn). T.21n, r.3e, sec.36 (se 1/4, ne 1/4). 137 Comment
  CHSC93460  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  CHSC83885  Lupinus polycarpus Lowell Ahart 2003-4-8 10038 Butte Pasture field, about 400 yards north of the falls on Coon Hollow, about 1/2 mile west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 331 Comment
  SEINET10490230  Lupinus sellulus var. artulus Edwin B. Copel 1931-7-3 Copeland 651 Butte Jonesville. Colby Canyon, in dry and barren openings. 1600 Comment
  CAS-BOT-BC322126  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  HSC23497  Lupinus vallicola L. E. Dunkel 1965-3-2 2 Butte .5 mi. SW of Municipal Golf Course building, Chico 61 Comment
  POM276281  Lupinus vallicola subsp. apricus Lyman D. Benson 1935-3-27 6363 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  SEINET10491007  Lupinus vallicola subsp. vallicola Taylor 1981-5-14 Taylor 3717 Butte Pulga se quad. N side of 23noo.2, 2.5 mi sw of merrimac on oroville-quincy Hwy. Corolla blue and white. Yellow pine forest. Associates: lathyrus Sulphureus, galium bolanderi, arbutus menziesii. 975 Comment
  CHSC52704  Luzula cascadensis L. P. Janeway 1987-5-28 2107 Butte Spring at the Soapstone Mine; near 4-trees Road 1.0 mi west of OroQuincy Hwy. 1493 Comment
  JEPS117180  Luzula cascadensis Lowell Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, about 100 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
  UC600809  Luzula cascadensis H. F. Copeland 1920-7-11 371 Butte Jonesville Comment
  CAS-BOT-BC441414  Luzula cascadensis L. P. Janeway 1987-7-5 2441 Butte 0.4 mi. E of a spur road from the Concow Road, which is 1.0 mi. SW of Jones Meadow 1798 Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  JEPS121938  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC43793  Luzula divaricata Vernon Oswald; Lowell Ahart 1987-7-1 3085 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. Just above the high-water level on the s side of the large lake. 1935 Comment
  CHSC87441  Luzula macrantha R. D. Fischer 2004-4-3 105 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail, 0.25 miles south of Pine Trail junction. 396 Comment
  RSA0060489  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir. 1020 Comment
  CHSC43003  Luzula parviflora L. P. Janeway 1987-6-19 2233 Butte Sly Creek, 2.1 mi from the Challenge-LaPorte Rd on the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  CDA42943  Lycopus americanus L. Ahart 2012-10-2 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC752  Lycopus americanus V. Holt; M. Underhill 1952-7-9 Butte Dodge Lands. 56 Comment
  UC1191829  Lycopus americanus Herbert L. Mason and Verne Grant 1946-8-14 13025 Butte canal near big pond on Sacramento Outing Club Comment
  CDA18879  Lythrum hyssopifolia Riley 2000-7-7 PDR 1170755 Butte behind County of Butte Agricultural Commissioner's office, 316 Nelson Ave., Oroville. 0 Comment
  CHSC112328  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 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
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  CHSC112696  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte Edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  SFV4039  Madia citriodora M. L. Vincent 1960-9-8 91 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  CHSC36840  Madia elegans subsp. elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC32149  Madia exigua L. Ahart 1979-5-29 1904 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek; ca. 2.5 mi se of Paradise. 500 Comment
  CHSC44374  Madia exigua Lowell Ahart 1988-6-23 6068 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CAS-BOT-BC342953  Madia gracilis H. M. Hall 1914-7-29 9800 Butte Butte Creek Comment
  SEINET10904900  Madia rammii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4157 Butte T20N R5E se sec 11. Along Ponderosa Way (Big Ridge Rd), ca. 1.5 mi e of its jct with East Fork Canyon Creek, ca. 15.5 mi ne of Oroville. Foothill Woodland. 600 Comment
  UC1442609  Madia subspicata Lowell Ahart 1978-7-15 Butte near North Honcut Creek; Honcut, Peter Ahart Ranch 50 Comment
  UC1442644  Madia subspicata Lowell Ahart 1978-10-29 Butte along the La Porte Rd. 4 mi ne Bangor 350 Comment
  CHSC116212  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte On the northwest side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  HSC94149  Malacothrix floccifera G. Fred Hrusa, T. D. Wilfred 1996-7-9 13185 Butte Approx 1 mi. on 22N89. Immediately S of Rogers Cow Camp on Hwy. 162. 1150 Comment
  JEPS106172  Malacothrix floccifera Lowell Ahart 2004-6-22 11113 Butte Road cut, on the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  JEPS87518  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
  JEPS98446  Malacothrix floccifera Lowell Ahart 2000-5-31 8417 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  SEINET10475283  Malacothrix floccifera Mary Susan Taylor 1982-6-24 Taylor 4723 Butte T22N R4E sw/se sec 14. Pulga SW quad. E side of Ponderosa Way (Rim Rd), 1.3 mi n of its jct with Hwy 70 at Jarbo Gap, ne of Oroville. 2800 ft. 853 Comment
  SEINET10475284  Malacothrix floccifera Mary Susan Taylor 1980-7-6 Taylor 3067 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  SEINET10479979  Malva parviflora Mary Susan Taylor 1982-4-28 Taylor 4374 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS119995  Marah fabacea Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17916 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC26767  Marah fabacea var. agrestis P. Moyer 1972-3-2 91 Butte N end of L. S. Bridge, on CSUC campus. 60 Comment
  CHSC3467  Marah fabacea var. agrestis Roger Jaegel 1966-3-2 17 Butte 4 miles northeast of Chico. Along the bank of Big Chico Crk. Upper Bidwell Park. Comment
  CHSC63048  Marah watsonii Vernon H. Oswald 1994-4-14 6105 Butte Old railroad grade along the N. Fork Freather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  CHSC52032  Marrubium vulgare B. Castro 1988-4-21 259 Butte At edge of Chico Cyn Rd just past hairpin turn where road turns away from Big Chico Ck and passes pistachio orchard at base of ridge. Naturalized fairly frequently along this strip on both sides of Big Chico Ck. on the e side of Chico. 91 Comment
  SEINET10498135  Marrubium vulgare Mary Susan Taylor 1975-2-16 Taylor 386 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  UC1586569  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1991-8-19 4837 Butte between Philbrook Reservoir and Coon Hollow (nw lake in cluster of 3 mapped lakes on n side of Forest Rd. 25N15) 1767 Comment
  CHSC24653  Marsilea vestita D. Hattem 1976-4-10 3 Butte Ca. 4.2 mi nw of Chico, ca. 250 m n of Hwy 32. 91 Comment
  CHSC101971  Matricaria discoidea J. Boze 1982-5-8 442 Butte On edge of parking area at shooting range, Upper Bidwell Park, Chico. Comment
  CHSC46112  Matricaria occidentalis J. D. Jokerst 1982-4-29 1541 Butte Grey Lodge Waterfoul Management Area. Along the edge of Rutheford Rd. where it turns 90 degrees to the north in the center of section 14. Comment
  CHSC58021  Matricaria occidentalis Vernon H. Oswald; Wes Dempsey 1992-5-20 4943 Butte South-east corner of Llano Seco. In a field bordering a marsh. 30 Comment
  UC50164  Meconella californica Mrs. R. M. Austin and Bruce 1898-3-1 2018 Butte Little Chico Comment
  UCD95462  Meconella californica Dana J. LeNarz 1982-4-8 11 Butte 60m SE of Butte Creek, vic. Covered Bridge, ca. 9.7 km SE of Chico. 122 Comment
  SEINET12155170  Medicago hispida P. L. Ricker 1912-1 3963 Butte Chico Comment
  CHSC950  Medicago lupulina L. Nelson 1935-5-23 Butte Salmon Hole. 152 Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  CHSC74090  Medicago polymorpha B. Castro 1998-5-11 790 Butte Ca 2.5 air mi E of the Oro-Quincy Hwy, at Milsap Bar, on the W side of Milsap Bar Road's bridge over the Middle Fork Feather River. 498 Comment
  CHSC82435  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A Butte High banks of a pond, at the beginning of a southeast 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
  UCD80307  Medicago polymorpha CNPS SN Foothill Team 2005-5-4 SNNR 0016 Butte City of Chico, Upper Bidwell Park, in the flood zone of Chico Creek. 81 Comment
  CHSC42917  Melica aristata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC88189  Melica aristata Lowell 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 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CAS-BOT-BC269374  Melica californica Lowell Ahart 1987-5-9 5582 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-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CAS-BOT-BC269388  Melica californica L. W. Swift 1934-5-7 102 Butte Outside forest 731 Comment
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. 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 by the trail 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. 599 Comment
  UC926585  Melica californica G. P. Van Eseltine 1918-4-29 Butte 4 mi se Chico (near bridge over Battle Creek) Comment
  UCD87016  Melica californica A. A. Heller 1915-4-20 11860 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  SEINET10968169  Melica californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4108 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC110224  Melica californica var. californica L. P. Janeway 2012-6-2 10837 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CDA14056  Melica californica var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13703 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  POM196537  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Jonesville. 1524 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC49559  Melica harfordii Vernon Oswald 1988-6-2 3348 Butte Spur Rd. 210G on w side of Hwy 32 ca. 0.3 mi n of Platte Mt. Lookout. 975 Comment
  JEPS106241  Melica harfordii Lowell Ahart 2004-7-11 11229 Butte On the north side of the road, on the northeast side of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  UCD88614  Melica subulata August L. Hormay 1929-7-7 s.n. Butte Butte Creek, 4 miles below Butte Mtn. Ranger Station. Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  JEPS116074  Melica torreyana Lowell Ahart 2009-5-30 15803 Butte On the northeast side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  JEPS120130  Melica torreyana Lowell Ahart 2012-5-14 18053 Butte On the raw bank of Big Chico Creek, at Table 11, north of the paved road, Lower Bidwell Park, Chico. Comment
  CDA30212  Melissa officinalis L. Ahart 2009-7-9 16014 Butte On the east edge of Big Chico Creek, about 15 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 Comment
  CHSC102627  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 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. 181 Comment
  JEPS108134  Melissa officinalis Lowell Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 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
  SEINET10498168  Mentha X piperita Mary Susan Taylor 1975-10-3 Taylor 923 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  SBBG128021  Mentha spicata L. Ahart 2011-8-17 17624 Butte ca. 20 yards S of the trail, S of the crossing and on the E side of Big Chico Crk, ca. 50 yards W of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 203 Comment
  CHSC30377  Micranthes californica J. D. Jokerst 1979-3-20 1154 Butte Top of North Table Mt., W edge at the water fall of the S branch of Coal Cr. 365 Comment
  CHSC25283  Micranthes oregana M. S. Taylor 1977-7-15 1406 Butte In ne corner of Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  CAS-BOT-BC348463  Micropus californicus var. californicus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC12118  Micropus californicus var. californicus M. F. Smith 1972-5-3 7 Butte 300 yds. southwest of intersection of Pentz Road and Paradise-Oroville Highway. 152 Comment
  CHSC392  Micropus californicus var. californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC4591  Micropus californicus var. californicus C. Glascock 1965-5-11 378 Butte Ca. 7.5 mi. ne of Chico and 3.6 mi. s of Russell Dr., S Paradise, ca. 30 yds. se of Hwy. Comment
  CHSC90182  Micropus californicus var. californicus Thomas M. Scott 1989-4-19 13 Butte About 50 m east of Butte Creek at Covered Bridge; 10.2 km east-southeast of Chico. 120 Comment
  CHSC26714  Microseris acuminata M. P. Hayes 1978-4-7 153 Butte On buttes at the Butte College campus on the corner of Pentz and Clark roads. 150 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
  CHSC40487  Microseris lindleyi Lowell Ahart 1985-4-29 4883 Butte Along the sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  CAS-BOT-BC322774  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC31775  Microsteris gracilis L. Ahart 1975-3-26 723 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31873  Mimetanthe pilosa L. Ahart 1975-6-23 807 Butte Peter Ahart Ranch. Along North Honcut Creek. Honcut. 45 Comment
  RSA535779  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte Table Mt. 0.5 mi s of Derrick Road along cherokee Road, E side of road 396 Comment
  RSA535780  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge. Griffith residence, 4.4 mi NE of Keefer Road along cohasset Hsy, then 0.4-0.6 mi s along private dirt road; 396 Comment
  UCSB44169  Mimulus angustatus Reisentz, Paul 1979-5-13 Butte 4 miles West on Cherokee Road from Highway 70 at Cherokee Point Comment
  LA209139  Mimulus aurantiacus G. P. Van Eselline; 1918-5-5 1722 Butte Near Nineshew Comment
  UC1577071  Mimulus aurantiacus var. grandiflorus C. G. Albertus 1933-6-6 17 Butte 1 mi nw Nelson's Bar; Chico Quadrangle Comment
  CDA14055  Mimulus bicolor G. F. Hrusa, T. D. Wilfred 1997-5-1 13702 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  SEINET10570195  Mimulus bicolor Mary Susan Taylor 1980-5-8 Taylor 2590 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
  RSA29027  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC43856  Mimulus glaucescens L. P. Janeway 1988-2-21 2586 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  POM252824  Mimulus glaucescens A. A. Heller 1938-5-4 s.n. Butte Near Covered Bridge over Butte Creek, east of Chico 107 Comment
  UC1023693  Mimulus glaucescens F. W. Pennell and A. A. Heller 1940-6-4 25667 Butte above Richardson Springs 182 Comment
  SEINET10570232  Mimulus glaucescens Mary Susan Taylor 1974-4-30 Taylor 193 Butte Along Cohasset Road, NE of Chico. Comment
  CHSC117442  Mimulus guttatus Lowell Ahart 2016-5-24 20862 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS80614  Mimulus guttatus M. S. Taylor 1980-4-27 2552 Butte ca. 1 mi s Nimshew (0.5 mi e of Nimshew Rd., on n side of Ponderosa Way Rd.) 609 Comment
  UC886185  Mimulus guttatus A. A. Heller 1915-5-4 11868 Butte 8 mi n Oroville Comment
  UC886186  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  SEINET8256543  Mimulus guttatus A. A. Heller 1914-3-18 11200 Butte low hills 8 miles north of Oroville. Comment
  RSA535533  Mimulus kelloggii David M. Thompson 1988-6-8 938 Butte 0.1 mi NW of Hwy 70 along Pulga Road (Pulga Road leaves Hwy 70 at W side of Feather River bridge). 500 Comment
  SEINET10929285  Mimulus laciniatus Lowell Ahart, L. Hanson 1985-5-20 Ahart 5027 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  POM173680  Mimulus latidens H. F. Copeland 1923-5-1 916 Butte Nelson. Comment
  UC1609049  Mimulus layneae Lowell Ahart 1993-7-29 7116 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  POM219093  Mimulus primuloides var. pilosellus H. F. Copeland 1927-9-3 362 Butte Jonesville. Comment
  SEINET10830521  Mimulus torreyi Mary Susan Taylor 1978-7-21 Taylor 1813 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
  SEINET11261613  Mimulus torreyi Dena Grossenbacher, Marisano James 2009-6-7 1033 Butte Along Bean Creek Road 1/1 miles east of junction with Bald Rock Road. Private property.; 0 984 Comment
  CHSC83916  Minuartia californica Lowell Ahart 2003-4-10 10054 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  JEPS110438  Minuartia californica Lowell Ahart 2006-4-27 12540 Butte Side of a bank, about 100 yards south of the fence and tower, pasture fields, about 4/5 mile north and 1 3/4 miles east of Honcut 49 Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CAS-BOT-BC388612  Minuartia douglasii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla 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
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  POM274266  Mitella breweri J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. 1829 Comment
  UC600613  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CHSC46351  Moehringia macrophylla Lowell Ahart 1989-5-29 6322 Butte Near the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  UCD98350  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte south side of the Oak Grove Cemetary, about 1/2 mile southeast of Hurleton, about 10 miles (air) northeast of Oroville. 548 Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC40638  Mollugo verticillata Lowell Ahart 1985-10-12 5204 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC80020  Mollugo verticillata L. P. Janeway; B. Castro 1999-6-4 6451 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  JEPS93834  Mollugo verticillata Lowell Ahart 1998-7-1 8029 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, in the tracks of poor dirt road about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  CHSC39334  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Along Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC60608  Monardella breweri subsp. lanceolata L. P. Janeway 1992-6-13 4232 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. 487 Comment
  UC104634  Monardella douglasii subsp. venosa C. C. Parry May 1882 Butte Chico Valley Comment
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Jul 19 2018
  UC2035956  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  SEINET10498947  Monardella odoratissima subsp. pallida Mary Susan Taylor 1977-8-17 Taylor 1489 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CAS-BOT-BC220450  Monardella sheltonii Clarence R. Quick 1964-7-9 64 -59 Butte North of Jarbo Gap Comment
  CAS-BOT-BC220458  Monardella sheltonii Lowell Ahart 1983-6-21 4083 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  CHSC4631  Monardella sheltonii R. Carter 1996-6-15 445 Butte 3/4 mi. S of intersection of 21N40 and Oroville-Quincy Rd. on W side of Oroville-Quincy Rd. 701 Comment
  JEPS113188  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  CHSC60100  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of canyon SE of Neal Road; ca 200 ft NW of intermittent creek. 79 Comment
  CHSC60101  Monardella venosa B. Castro; L. P. Janeway 1992-5-10 456 Butte In bottom of canyon SE of Neal Road; ca 100 ft NW of intermittent creek. 85 Comment
  HSC93643  Monardella venosa B. Castro 1996-5-18 659 Butte 5.5 mi. SE of Paradise, in bottom of unnamed canyon just S of Neal Rd., 60 ft. N of creek channel directly under transmission lines 85 Comment
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Dec 20 2012
  HSC95623  Monardella venosa James D. Jokerst, B. Castro 1992-5-19 3356 Butte Powerline site in unnamed canyon N of Nugen Canyon, S side of Neal Rd. near Butte Co. Sanitary Landfill, Cascade Range Foothills 84 Comment
  JEPS17021  Monardella villosa subsp. villosa Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4724 Butte Along Butte Creek Canyon side, on Humbug Road, one-half mile below Nimshew. 701 Comment
  UC726300  Monardella villosa subsp. villosa A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CHSC54877  Monochoria vaginalis Vernon H. Oswald; Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  UC1586510  Monochoria vaginalis Vernon H. Oswald and Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Highway 162, ca. 3.5 mi north-northwest of Biggs. 30 Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC115362  Montia fontana Lowell Ahart 2015-2-26 19939 Butte On the west side of the old paved road (Bidwell Bar- Miners Ranch Road), strand of Lake Oroville, about 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. 218 Comment
  JEPS106292  Montia fontana Lowell Ahart 2004-3-1 10700 Butte near low rocks, large rocks to the south, about 1 mi NE of Honcut Cemetary, about 4 air mi NE of Honcut, about 12 air mi SE of Oroville 62 Comment
  JEPS119846  Montia fontana subsp. amporitana Lowell Ahart 2012-3-23 17792 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC56081  Montia fontana subsp. chondrosperma L. P. Janeway 1988-6-25 2871 Butte In Coon Creek and near Bull Hill Road 1.0 mi from Skyway. 1554 Comment
  UCD101762  Montia parvifolia Brian Bagley 1981-5-17 26 Butte 2.5 miles south of Arch Tunnel on Hwy 70. Cresta Powerhouse Substation. 463 Comment
  SEINET10572726  Montia saxosa Mary Susan Taylor 1977-7-15 Taylor 1401 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  JEPS119543  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17859 Butte East of the Deer Pen, south of Table 11, Lower Bidwell Park, Chico. Comment
  CHSC61372  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  JEPS116018  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
  CHSC110396  Muhlenbergia mexicana Lowell Ahart 2012-9-28 18471 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  UC1563262  Muhlenbergia mexicana unknown 1990-9-30 6610 Butte 1/8 mi ne Canyon Creek Bridge across Lake Oroville (creek bottom below high water line of lake); East Fork of Canyon Creek 243 Comment
  CHSC113475  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC29372  Myosotis discolor R. A. Schlising; R. Banchero 1980-6-6 3655 Butte N of L. Oroville, on Bald Rock Road, 1.5 mi s of jct with Oroville-Quincy Highway in Brush Creek. 944 Comment
  CHSC20052  Myosurus apetalus var. borealis M. S. Taylor 1975-4-18 483 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99, ca. 5 mi n of Chico. Comment
  CHSC46269  Myosurus apetalus var. borealis Vernon Oswald 1989-4-19 3742 Butte Wurlitzer Unit, Vina Plains Preserve. On the s side of Singer Creek. 57 Comment
  RSA150432  Myosurus minimus A. A. Heller 1902-5-2 s.n. Butte Near Butte City. Comment
  CHSC94794  Myriophyllum aquaticum L. P. Janeway; B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 Comment
  JEPS120717  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  CHSC44042  Nama lobbii L. P. Janeway 1987-6-27 2329 Butte Along Little Kimshew Cr just north of Ramsey Bar. Open sandy DG among mtn. whitethorn. Site of old Ramsey Bar mining and timber activities. 1341 Comment
  SBBG17025  Nasturtium officinale M. Vincent 1962-4-18 210 Butte Butte Crk Cyn near Humbug Rd, 1 mi E of old covered bridge Comment
  UC1562317  Navarretia capillaris Vernon Oswald and Lowell Ahart 1990-6-27 4331 Butte 0.3 mi wnw Buckeye (site) (Oro-Quincy Hwy at the s edge of Walker Plains); s edge Walker Plains, nw of Buckeye (site) 1536 Comment
  CHSC45426  Navarretia divaricata subsp. vividior Lowell Ahart 1984-7-19 4729 Butte Along the edge of the dirt road where there is a seep, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  JEPS100229  Navarretia filicaulis Dean W. Taylor 2002-7-3 18217 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  RSA716046  Navarretia filicaulis L. Ahart 2005-7-12 12135 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 624 Comment
  CHSC36712  Navarretia intertexta D. H. Ikeda 1980-5-26 389 Butte 1.4 mi w of intersection of Lunt Rd. and Nelson-Bar Rd. Comment
  SEINET3696384 Image available Navarretia intertexta Lewis S. Rose 1933-5-27 33193 Butte Bangor. 267 Comment
  SEINET10496825  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1590 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  SEINET10496826  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1611 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC88062  Navarretia intertexta subsp. intertexta R. D. Fischer 2004-4-4 188 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at n/e end of Disk Golf Course, near connecting tr. to Guardian Trail. Old road bed. 393 Comment
  CHSC2375  Navarretia leucocephala R. Carter 1965-5-13 196 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CHSC23857  Navarretia leucocephala Glenda Foster 1975-5-10 99 Butte In vernal pool at the roadside at the intersection of Highway 99 and Broyles Road. Comment
  SEINET10496830  Navarretia leucocephala Mary Susan Taylor 1976-3-23 Taylor 1032 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CHSC116695  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC75392  Navarretia leucocephala subsp. leucocephala Jennifer Slater 1997-4-20 24 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  SEINET14151956  Navarretia leucocephala subsp. leucocephala B. Ertter, J. Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  CAS-BOT-BC230477  Navarretia nigelliformis var. nigelliformis Beecher Crampton 1966-6-27 7768 Butte Ca. 13 miles NW central Chico (in direct line), Roney Ranch Comment
  CHSC91119  Navarretia pubescens Lowell Ahart 2005-5-28 11819 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  CAS-BOT-BC233616  Navarretia pubescens David D. Keck 1933-5-30 2414 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains 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
  UCD48661  Navarretia tagetina W. R. Powell 1964-4-23 1471 Butte 2 miles south-southeast of Oroville, Butte County, California. 71 Comment
  CHSC50992  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC10639  Nemophila heterophylla Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC31114  Nemophila heterophylla Leslie Steidl 1980-4-3 13 Butte Ca. .5 mi nw of Lumpkin Rd. on Island Bar Hill Rd., and 3 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  RSA325124  Nemophila heterophylla M. S. Taylor 1981-3-16 3411 Butte East side of Truex Road, ca. 0.5 miles south of its junction with Highway 70, ca. 7 miles north of Oroville. 305 Comment
  CHSC50550  Nemophila parviflora var. austiniae Vernon Oswald 1990-7-3 4345 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
  CHSC27154  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  CHSC115431  Nerium oleander Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  CHSC49436  Nicotiana acuminata var. multiflora Vernon Oswald 1984-6-3 1250 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. 39 Comment
  CHSC49437  Nicotiana glauca Vernon Oswald 1987-5-3 2371 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC65691  Nicotiana glauca Vernon H. Oswald 1996-3-29 7276 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. On the riprapped bank of the Sacramento River at the N end of Riparian Sanctuary. 30 Comment
  CHSC26644  Nymphaea odorata M. S. Taylor 1977-9-10 1517 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  CHSC38882  Odontostomum hartwegii Vernon Oswald 1983-4-25 392 Butte Upper Bidwell Park, Chico, on the north slope of Horseshoe Lake. 109 Comment
  SEINET3887706  Odontostomum hartwegii Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch about 2 1/2 mi NNE of Honcut between Oroville & Marysville.; 0 30 Comment
  SEINET10529930  Onychium densum Mary Susan Taylor 1976-4-24 Taylor 1075 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC116672  Ophioglossum californicum Lowell Ahart 2016-2-22 20741 Butte About 150 yards south of the north fence line, about 1/2 mile east of dthee 'S' turn in Dunstone Drive, about 4 1/4 miles northeast of Honcut. 66 Comment
  CHSC68240  Ophioglossum californicum Lowell Ahart 1997-1-30 7712 Butte About 3/4 mile east of Dunstone Road, about 3 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 91 Comment
  CAS-BOT-BC349983  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  JEPS80620  Orobanche fasciculata M. S. Taylor 1980-5-15 2640 Butte ca. 9 mi. n.e. Chico (ca. 0.25 mi. e. of Cohasset Rd. on Cohasset Ridge); Cohasset Ridge 396 Comment
  SEINET10500392  Orobanche fasciculata var. franciscana Mary Susan Taylor 1980-4-19 Taylor 2539 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  UC558451  Orobanche vallicola E. B. Copeland 1936-11-2 Butte Chico Comment
  CHSC51081  Orthilia secunda Pauleen Broyles 1987-7-19 1077 Butte Ca. 72 km (air) ne of Inskip. at edge of small lake. 526 Comment
  RSA189382  Orthocarpus attenuatus L. S. Rose 1967-5-6 67055 Butte Oroville. 52 Comment
  SEINET12318315  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 7.6 mi N on Cohasset Rd from East Ave. jct 564 Comment
  NY90835  Orthocarpus bicolor A. A. Heller 1902-5-10 5519 Butte Berry Canyon (near Clear Creek). Comment
  SEINET10549653  Orthocarpus campestris Mary Susan Taylor 1978-5-7 Taylor 1603 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10549654  Orthocarpus campestris Mary Susan Taylor 1979-5-6 Taylor 1999 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET12332663  Orthocarpus erianthus S. S. Khan 1988-1 42 Butte North Table Mountain, ca 100 yds W of Table Mountain-Cherokee Rd, ca 6 mi N of Oroville 244 Comment
  UC1562354  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail ca 0.4 mi n trailhead (ca 2 mi n of town of Feather Falls) 701 Comment
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  CDA1627  Ottelia alismoides G. D. Barbe, T. C. Fuller 1977-9-2 2334 Butte Drainage canal west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. 0 Comment
  SEINET10837347  Oxalis rubra Mary Susan Taylor Taylor 808 Butte Weedy or cultivated plants of Chico. 61 Comment
  SEINET10454540  Oxypolis occidentalis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4193 Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  CAS-BOT-BC316889  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1963-6-2 63067 Butte north fork of the Feather River, 2 mi south of Pulga 579 Comment
  CHSC99562  Packera eurycephala var. lewisrosei L. P. Janeway 2008-5-26 9388 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CHSC4359  Panicum capillare R. L. Smith 1966-5-28 7 Butte US Plant Introduction Station 5 mi sw of Chico. Comment
  JEPS124345  Panicum capillare Lowell Ahart 2015-10-26 20605 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  JEPS76250  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  RSA29937  Panicum capillare I. L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC116501  Panicum dichotomiflorum B. Castro; Andy Rogers 2014-7-16 2034 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy footbridge. 55 Comment
  UCD38753  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  JEPS103328  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  CDA6386  Parentucellia viscosa L. P. Janeway 2005-5-9 8384 Butte Northern Sierra Nevada Foothills; Northwest side of Highway 10, 0.6 km southwest of Pentz Road. Comment
  CHSC90963  Parentucellia viscosa L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  JEPS108539  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern High Sierra Nevada Foothills. Abundant on the slopes above the east side of Pentz Road 0.5 km north of Durham-Pentz Road 201 Comment
  SEINET7040266  Parvisedum pentandrum A. G. Vestal 1963-5-9 s.n. Butte Ca 14.2 miles southeast of Chico. Nelson Quadrangle UTM Zone 10, 598465mE, 4375546mM. Comment
  CHSC94686  Paspalum dilatatum Lowell Ahart 2006-9-28 13384 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC31628  Paspalum distichum L. Ahart 1975-7-5 852 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC202814  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville 853 Comment
  CHSC54095  Pectocarya pusilla Vernon H. Oswald; Lowell Ahart 1991-5-13 4580 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC24781  Pedicularis densiflora D. E. Hale 1976-4-10 14 Butte On e side of Vilas Rd - Ponderosa Rd intersection, ca. 1.2 km e from Vilas Rd - Cohasset Hwy intersection. 830 Comment
  CHSC3535  Pedicularis densiflora John Francis 1966-4-6 83 Butte 0.3 mi from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  UC103230  Pedicularis densiflora Mrs. R. M. Austin July 1890 111 Butte Colby Comment
  SEINET12320799  Pedicularis densiflora T. L. Wood 1974-1 30 Butte 100 yards W of Cohasset HWY, 17 mi E of Chico Airport 232 Comment
  CHSC4051  Pellaea andromedifolia J. W. Cherry 1967-3-23 Butte Along north bank of Big Chico Creek, directly s. of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  POM23246  Pellaea andromedifolia E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  CAS-BOT-BC67552  Pellaea mucronata Lowell Ahart 1979-4-6 s.n. Butte 3 mi. nw of Bangor, along the west side of North Honcut Creek. 100 Comment
  CAS-BOT-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC23329  Pellaea mucronata Mark Stopher 1976-7-11 31 Butte Collected in Butte Creek Canyon. On the north side of the canyon opposite the Black Diamond Mine. 731 Comment
  SD111898  Pellaea mucronata Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-8 3316 Butte North Honcut Creek on Peter Ahart Ranch ca 2I(c) miles NE of Honcut between Marysvill and Oroville 45 Comment
  CAS-BOT-BC67551  Pellaea mucronata Lowell Ahart 1979-4-3 s.n. Butte Honcut - near edges of N. Honcut Creek, Peter Ahart Ranch. 50 Comment
  SEINET10470234  Pellaea mucronata Lowell Ahart 1985-6-17 Ahart 5055 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET10529811  Pellaea mucronata Mary Susan Taylor 1981-4-5 Taylor 3482 Butte T21N R4E se sec 2; Berry Creek quad. 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, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10483086  Peltiphyllum peltatum Mary Susan Taylor 1976-5-5 Taylor 1119 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
  CHSC114692  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Roadside. Comment
  NY571127  Penstemon azureus var. angustissimus A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road, 3 miles from Chico at the lower limit of the digger pine belt Comment
  SD4575  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville, open damp stony ground 1950 Comment
  CHSC35219  Penstemon laetus var. leptosepalus M. S. Taylor 1981-5-7 3629 Butte N side of Ponderosa Way, 0.8 mi n of Sucker Creek bridge, ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC44699  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 291 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CHSC86545  Penstemon laetus var. leptosepalus L. P. Janeway; John Hunt 2003-6-13 7826 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 140 m northwest of the north end of Enterprise Bridge. 287 Comment
  NY604522  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville Comment
  POM195089  Penstemon neotericus D. D. Keck 1930-7-24 970 Butte 7 miles above Chaparral (near Humbug Summit). 1707 Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  CAS-BOT-BC239453  Penstemon rydbergii var. oreocharis C. S. Robinson 1929-7-4 124 Butte Lassen National Forest, Colby Mdw. 1219 Comment
  CHSC57333  Pentagramma triangularis Robert C. Hill 1990-4-10 9 Butte Large population at intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CAS-BOT-BC77139  Pentagramma triangularis subsp. semipallida Jeffrey D. Mott 1978-4-24 8 Butte West Branch Feather River - Cherokee Quadrangle 280 Comment
  CHSC40223  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1984-7-2 1341 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  UC1390029  Perideridia bolanderi subsp. involucrata T. I. Chuang and L. Constance 1967-6-21 6057 Butte on Hwy 70 5.7 mi se Pentz SStore Comment
  CHSC73399  Perideridia howellii B. Castro 1995-9-10 611 Butte Watson Cabin Meadow. Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  CHSC40232  Perideridia lemmonii Vernon Oswald 1985-7-2 1875 Butte Humboldt Rd. 0.4 mi e of its jct. with the Skyway (Bull Hill Rd.) in Butte Meadows. 1325 Comment
  CHSC94399  Perideridia lemmonii Lowell Ahart 2006-8-15 13176 Butte North edge of a wet area west of a large open meadow and bog, 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. 1569 Comment
  SEINET10906780  Perideridia oregana Lowell Ahart 1985-6-17 Ahart 5061 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CAS-BOT-BC77561  Peritoma arborea var. globosa M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4377 Butte Headquarters of Graylodge Wildlife Refuge, ca. 12 mi SW of Gridley 19 Comment
  CHSC37071  Persicaria hydropiper L. Ahart 1982-10-6 3846 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edge of North Honcut Creek. 50 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
  CHSC37070  Persicaria hydropiperoides L. Ahart 1982-10-6 3847 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edges of North Honcut Creek. 50 Comment
  CHSC43266  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC21144  Persicaria maculosa M. S. Taylor 1975-10-3 924 Butte Abundant in mud on Big Chico Creek, under bridge over River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC2390  Petrorhagia dubia R. Carter 1965-5-19 214 Butte Found 7 mi. E of Oroville, along N side of Feathervale Ave., 20' from intersection with Wyandott LaPort Rd. 274 Comment
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS104201  Phacelia cicutaria var. cicutaria Lowell Ahart 2003-4-10 10065 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  UC1047038  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 344 Butte along Feather River Hwy about 16 mi ne Oroville Comment
  UCD80360  Phacelia heterophylla subsp. virgata CNPS SN Foothill Team 2005-5-5 SNNR 0020 Butte City of Chico, Upper Bidwell Park. 202 Comment
  CHSC46720  Phacelia imbricata R. A. Schlising 1982-7-28 4356 Butte Plumas National Forest, SE of Pulga and S of Coyote Gap Station. 838 Comment
  UC426940  Phacelia procera E. B. Copeland 1930-7-11 447 Butte near Butte Creek; Jonesville 1550 Comment
  CAS-BOT-BC154304  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  CHSC32604  Phalaris brachystachys J. D. Jokerst 1979-11-11 636 A Butte Goodspeed-Watt Road 0.1 mi N of its jct with Nelson Rd. Area adj to canal. Comment
  CHSC29282  Phalaris paradoxa R. A. Schlising 1979-6-3 3433 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 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
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  RSA0057770  Philadelphus lewisii C. C. Bruce 1897-05 1785 Butte Little Chico. Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CAS-BOT-BC250862  Phleum pratense H. F. Copeland 1920-8-29 144 Butte Jonesville Meadow 1219 Comment
  SEINET10496850  Phlox diffusa Mary Susan Taylor 1978-7-18 Taylor 1713 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  SEINET7073628  Phlox speciosa A. G. Vestal 1955-5-21 s.n. Butte About 15.3 miles east of Oroville on the Forbestown Road. UTM Zone 10, 645084mE, 4373885mN. Coordinate datum: NAD27. Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  CAS-BOT-BC135097  Phoradendron juniperinum Flower Shaw 1928-4-1 s.n. Butte Cherokee School Comment
  CAS-BOT-BC135128  Phoradendron juniperinum Lowell Ahart 1980-9-10 2622 Butte Little Bald Rock 1100 Comment
  SEINET10492843  Phoradendron juniperinum subsp. libocedri Mary Susan Taylor 1981-5-15 Taylor 3739 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  CHSC77496  Phoradendron villosum Tim Stofer 1997-4-12 8 Butte Located on the east side of trail 100 yrds from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CHSC110330  Phyla nodiflora var. nodiflora B. Castro; Margie Graham 2006-8-24 1603 Butte Sacramento Valley. Ca 1.8 mi W of Hwy 99 and 1 mi E of Richvale, 0.25 mi N of Richvale Hwy in Cherokee Canal. On E side of canal abt 50 ft in from toe of E levee. 32 Comment
  CDA9258  Physalis acutifolia D. G. Kelch 2006-8-2 6 .336 Butte Along Ord Ferry Rd. Comment
  CDA5821  Physalis lancifolia Margaret Bellue Jul 1949 Butte Near Biggs. 0 Comment
  UCD113673  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca. 1.1 mi S of Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide with large boulders. 585 Comment
  CHSC26810  Pilularia americana M. S. Taylor 1978-5-7 1605 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC43857  Pilularia americana Vernon Oswald 1988-3-14 3256 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC46175  Pilularia americana Lowell Ahart 1980-5-10 2229 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET6166093  Pilularia americana L. Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SD23  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC104850  Pinus ponderosa var. ponderosa Lowell Ahart 2010-6-12 16794 Butte On the east side of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 216 Comment
  CHSC103950  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 301 Comment
  CHSC88294  Piperia elongata Lowell Ahart 2004-6-22 11114 Butte On the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  CHSC49680  Piperia transversa Vernon Oswald 1983-7-26 914 Butte Calif. Hwy 32, 6.2 mi n-e of Forest Ranch. 1036 Comment
  SEINET10529818  Pityrogramma triangularis Mary Susan Taylor 1980-4-6 Taylor 2447 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET10899921  Pityrogramma triangularis Mary Susan Taylor 1981-4-5 Taylor 3483 Butte T21N R4E se sec 2; Berry Creek quad. 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, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CAS-BOT-BC6468  Plagiobothrys austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC29044  Plagiobothrys bracteatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 545 Butte Table Mountain, S. of Cherokee Rd. Around the edge of the high water mark of vernal pools. 403 Comment
  HSC38054  Plagiobothrys fulvus Thomas W. Nelson, Jane P. Nelson 1976-5-9 2460 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CHSC28996  Plagiobothrys fulvus var. campestris J. D. Jokerst 1980-3-12 473 Butte NE of Chico. 67 Comment
  CHSC29035  Plagiobothrys fulvus var. campestris J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 546 Butte Table Mountain, 100 mets. N. of intersection of Cherokee Rd. and E. edge of section 12. Comment
  UCD80159  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-13 SNFN 0079 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 30 m from the western boundary and 60 m from the southern boundary. 85 Comment
  RSA81730  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  SBBG28845  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte W of Wick's Corner N of Oroville Comment
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Sep 22 2013
  RSA0116258  Plagiobothrys hispidulus Lowell A. Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC28997  Plagiobothrys nothofulvus J. D. Jokerst 1980-3-12 472 Butte Foothills NE of Chico. 67 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
  CHSC46766  Plagiobothrys scriptus Lowell Ahart 1977-4-9 1276 Butte Along the edges of a small swale, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC46767  Plagiobothrys shastensis Lowell Ahart 1979-5-12 1872 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC763056  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  CHSC104000  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 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
  CHSC4469  Plagiobothrys stipitatus var. stipitatus C. Glascock 1965-3-23 341 Butte Ca. 1 mi. S of US99E on Haille Rd., ca. 11 mi. NW of Chico. Near Butte-Tehama Co. line. In pasture NE of Haille Rd. Comment
  CHSC35324  Plagiobothrys tenellus M. S. Taylor; K. Tharp 1982-4-8 4290 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC43553  Plagiobothrys tenellus Lowell Ahart 1978-4-19 1652 Butte Along the trail, about 1/2 mile south of Feather Falls, about 5 miles north of the town of Feather Falls. 548 Comment
  CHSC46259  Planodes virginica Vernon Oswald 1989-4-20 3748 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between Butte Creek and Little Dry Creek n of Gridley-Colusa Hwy. In rice paddies. 18 Comment
  CHSC37404  Plantago elongata A. R. Ratcliff; R. A. Schlising 1980-4-6 3547 Butte Jct Chico-Oroville Road, about 5 mi s of Chico. 53 Comment
  CHSC47458  Plantago elongata Lowell Ahart 1974-3-24 337 Butte Growing on the bottom of vernal pools and wet swales, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC83954  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, about 20 yards south of a faint poor dirt road, pasture field, about 150 yards southwest of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  CDA12067  Plantago erecta G. F. Hrusa, J. Hart 1989-4-15 5916 Butte Table Mountain; Summit of North Table Mountain. Comment
  CHSC41135  Plantago erecta Paul K. Kirk 1981-4-16 10 Butte 150 m w of the e gate of Cherokee Rd. on Table Mountain, 13 km n of Oroville. 390 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
  JEPS119629  Plantago major Lowell Ahart 2012-6-14 18191 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  JEPS98702  Plantago virginica Lowell Ahart 2000-5-17 8366 Butte 7 1/4 air mi W of Oroville (SE margin Thermalito Afterbay, W of poor dirt road, S of the Cottonwood tree, about 1/8 mi N of the Richvale Hwy, about 3/4 mi E of Hwy 99) 42 Comment
  CHSC26859  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1664 Butte On n side of Old Humbug Rd, across from Butte Meadows. 1371 Comment
  CHSC68911  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 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
  CHSC30887  Plectritis macrocera J. D. Jokerst 1979-4-6 1186 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  CAS-BOT-BC244403  Poa annua John Thomas Howell 1961-9-22 36719 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC255684  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville 2133 Comment
  CHSC40294  Poa bolanderi Lowell Ahart 1985-7-16 5147 Butte Near Willow Creek, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  CHSC41433  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  CAS-BOT-BC255064  Poa compressa John Thomas Howell 1973-7-9 49699 Butte Granite area near Bear Ranch Creek, Feather River Highway 457 Comment
  CHSC46441  Poa compressa Lowell Ahart 1989-5-28 6286 Butte In a meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS116023  Poa compressa Lowell Ahart 2009-7-9 16022 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 203 Comment
  UC1594539  Poa compressa Lowell Ahart 1992-8-2 6897 Butte cxa 3 air mi ne Concow Reservoir (in Concow Medow, along Concow Creek) 1097 Comment
  CDA19116  Poa pratensis H. D. Riley 2001-5-2 PDR 1170767 Butte Sacramento Valley; In residential lawn, on 1419 Muir Ave., Chico. 0 Comment
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  JEPS110191  Poa pratensis subsp. pratensis Lowell Ahart 2006-7-16 12973 Butte West edge of a large meadow and bog, 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 1569 Comment
  CAS-BOT-BC255236  Poa pringlei V. Oswald; L. Ahart 1988-7-29 3650 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  SEINET10508309  Poa scabrella Lowell Ahart 1985-5-15 Ahart 4996 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC107428  Poa sierrae L. P. Janeway 2011-7-21 10517 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cutbanks, east-facing. 1067 Comment
  CHSC2376  Pogogyne douglasii R. Carter 1965-5-13 197 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  RSA0022185  Pogogyne zizyphoroides C. C. Bruce 1897-05 1834 Butte [No location information on label.] Comment
  SEINET12320807  Pogogyne zizyphoroides E. C. Taylor 1975-1 39 Butte Ca 10yds W of Cohasset Hwy. opposite the Chico Municipal Airport, 2.7 mi N of Chico 76 Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  CHSC40790  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 5041 Butte Sidewalk on the east side of Cherry Street, between 9th. and 8th. Street, Chico. 60 Comment
  CHSC1314  Polygala cornuta V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC42262  Polygonum bidwelliae Barbara Castro 1987-5-2 60 Butte Upper Bidwell Park, Chico, ca. 0.5 mi e of Rifle Range beside foot trail. 109 Comment
  UC570215  Polygonum bidwelliae J. E. Sowder 1933-6-2 79 Butte about 3 mi n Clear Creek; Chico Quadrangle 274 Comment
  CHSC45460  Polygonum californicum Lowell Ahart 1979-6-9 1931 Butte In grassy areas east of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC66903  Polygonum californicum Lowell Ahart 1996-11-11 7709 Butte In an open area in blue oaks, pasture field, about 1/2 mile west of the intersection of Avacado Avenue and Oroville Bangor Highway, about 1 mile northwest of Bangor. 213 Comment
  JEPS95528  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte about 1 mi E of Chico (along North Rim Trail, near the double power lines, Bidwell Park) 152 Comment
  CAS-BOT-BC414418  Polygonum douglasii A. A. Heller 1914-7-23 11603 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC414420  Polygonum douglasii Lowell Ahart 1988-9-4 6182 Butte On the bank of Big Kimshew Creek. About 1 air mile north-east of Jones Meadow 1920 Comment
  CHSC31167  Polygonum douglasii subsp. douglasii M. S. Taylor 1978-9-9 1916 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC113387  Polygonum parryi Lowell Ahart 2014-7-2 19550 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  JEPS87372  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1191264  Polygonum punctatum Herbert L. Mason and Verne Grant 1946-9-4 13109 Butte West Gridley Rd 833 Canal Comment
  SEINET10904456  Polygonum punctatum Mary Susan Taylor 1977-8-16 Taylor 1450 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SD1351  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville, Colby Canyon 1550 Comment
  CAS-BOT-BC71865  Polypodium californicum Lowell Ahart 1983-4-1 3917 Butte along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  CHSC11324  Polypodium calirhiza Lowell Ahart 1965-3-1 13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC33346  Polypodium calirhiza Steve Alvarez 1980-3-24 13 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway. 270 Comment
  CHSC90205  Polypodium calirhiza Lowell Ahart 2005-1-20 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  CHSC82267  Polypogon interruptus Lowell Ahart 2002-4-15 9492 Butte On the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  JEPS87484  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  CHSC90805  Polypogon maritimus Lowell Ahart 2005-5-2 11777 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
  CAS-BOT-BC72296  Polystichum imbricans subsp. imbricans John Thomas Howell; Gordon H. True 1967-6-11 42566 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  JEPS124288  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC34679  Polystichum munitum L. Ahart 1981-11-8 3231 Butte Along the road to the Golden Trout Crossing, ca. 7 mi w of Sly Creek Dam. 800 Comment
  CHSC37101  Populus alba L. Ahart 1982-9-13 3802 Butte A little n of the Lost Creek Reservoir Dam, ca. 2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC102494  Populus fremontii John Thomas Howell 1961-9-22 36722 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC102692  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte south of the dirt road, about 1/2 miles south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CHSC46824  Porterella carnosula R. A. Schlising; R. Banchero 1980-7-14 3907 Butte N part of county, 1.1 mi N of Snag Lake on the Skyway. Tiny, overgrown lake N of road. 1807 Comment
  UCD138294  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station. Comment
  CHSC50560  Potentilla norvegica Vernon Oswald 1990-7-9 4356 Butte Paradise Lake, ca. 3 mi north of Magalia. On the bank of Mosquito Creek, just below the high-water line of the lake. 775 Comment
  CAS-BOT-BC64614  Primula suffrutescens R. A. Schlising; R. Preston; R. Banchero; D. Burk 1981-7-21 s.n. Butte SE. of Jonesville in ne. part of county, on ridgetop of Snow Mountain. 2103 Comment
  UCD122082  Proboscidea lutea A. A. Heller 1914-8-29 11685 Butte Hills 8 miles north of Oroville. Comment
  SEINET10902805  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1975-6-25 Taylor 801 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CAS-BOT-BC159827  Prunus avium C. R. Quick 1953-8-11 53 -125 Butte Rag Dump Meadow se. of Stirling City Comment
  CHSC96429  Prunus caroliniana L. P. Janeway 2007-3-30 8965 Butte Sacramento Valley. Rancho Arroyo Chico. On campus of California State University Chico; 35 m north of Big Chico Creek, 10 m east of the pedestrian path across the creek to the middle of Holt Hall; part of the Camelia Garden. 60 Comment
  CHSC108959  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17852 Butte Just east of the Deer Pen, near Table 10, Lower Bidwell Park, Chico. 65 Comment
  LA208651  Prunus virginiana var. demissa A. A. Heller; 1916-4-13 12320 Butte Stilson Canon E of Chico Comment
  SEINET10483131  Prunus virginiana var. demissa Mary Susan Taylor 1976-4-27 Taylor 1085 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  CHSC42464  Pseudognaphalium luteoalbum Lowell Ahart 1987-5-6 5500 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS108883  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the 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
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC48277  Pseudostellaria jamesiana Vernon Oswald 1983-7-19 877 Butte Philbrook Rd. at the W. branch of the Feather River. 1554 Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  SD5471  Psilocarphus tenellus E. B. Copeland 1931-7-20 Butte Jonesville 1700 Comment
  CHSC39392  Pycnanthemum californicum L. Ahart 1983-9-17 4436 Butte Ca. 1/4 mi se of Sitrling City. 1100 Comment
  CHSC62562  Pycnanthemum californicum B. Castro 1993-7-7 468 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  CHSC20527  Pyracantha koidzumii Pamela Caldwell 1971-10-8 Butte CSUC campus. Bordering front lawn of Administration Bldg. Comment
  CHSC30770  Pyrola aphylla M. S. Taylor; R. S. Schlising 1980-7-6 3070 Butte On e side of Hwy 32, ca. 1 mi n of Soda Springs. 1280 Comment
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  JEPS108897  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  CHSC11802  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CHSC43724  Pyrola picta Vernon Oswald; Lowell Ahart 1987-7-5 3187 Butte N flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  SEINET8371774  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CAS-BOT-BC45811  Quercus H. F. Copeland 1920-8-26 177 Butte near Jonesville 1219 Comment
  CAS-BOT-BC45812  Quercus H. F. Copeland 1920-8-26 178 Butte near Jonesville 1219 Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 Comment
  CAS-BOT-BC86116  Quercus dumosa John Thomas Howell 1975-6-15 51080 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC86117  Quercus dumosa John Thomas Howell 1955-6-15 30492 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC96619  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8680 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CAS-BOT-BC61580  Quercus lobata Antone Blazic 1920-12-24 s.n. Butte Hooker Oak, Chico Comment
  OBI69220  Quercus lobata Kari Fisher, Bill Fisher 2000-10-8 23 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  UC1135701  Quercus lobata H. A. Jensen 1934-10-25 389 Butte 1.5 mi n Penty; Chico Quad., Dry Creek 152 Comment
  CHSC6044  Quercus nigra M. MacArthur 1968-6-17 168 Butte Half way between LS bld. and Big Chico Creek, Chico State College. 60 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
  UCD47411  Quercus vacciniifolia A. E. Wieslander; J. E. Sowder 1933-6-24 91 Butte 1/4 mile east of Inskepion Fish Creek. 1432 Comment
  CHSC23640  Quercus wislizeni M. S. Taylor 1976-3-30 1037 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC27951  Quercus wislizeni M. S. Taylor 1979-3-20 1937 Butte Ca. 1 mi n of jct of north fork Feather River, along an old road, ca. 10 mi n of Oroville. 304 Comment
  CDA38780  Rafinesquia californica L. Ahart 2012-4-3 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  UCD96215  Ranunculus hystriculus T. M. S. Taylor; Devine, M. Merryman 1981-2-11 3382 Butte 50 feet east of Lumpkin Road, on the north slope abvoe Macabes Creek, 2 miles N of junction of Lumpkin Road and Oroville-Quincy Highway (162), 13 miles NE of oroville. 457 Comment
  CHSC111374  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte On dark clay soil, on the bottom of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  CHSC85422  Ranunculus muricatus John Dittes 1992-5-5 474 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  HSC31873  Ranunculus muricatus David Johnson 1974-4-20 44 Butte Table Mtn. Comment
  CHSC113393  Ranunculus occidentalis var. occidentalis Lowell Ahart 2014-7-2 19544 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC31806  Ranunculus occidentalis var. occidentalis L. Ahart 1974-3-18 334 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31207  Ranunculus occidentalis var. ultramontanus M. S. Taylor 1978-7-18 1723 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  JEPS123886  Ranunculus pusillus Lowell Ahart 2015-5-5 20139 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  JEPS98314  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay S side of access road to boat ramp, W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC93958  Ranunculus uncinatus var. uncinatus R. D. Fischer 2004-6-20 754 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  CHSC38035  Raphanus raphanistrum R. E. Preston 1982-11-13 366 Butte Along sides of Chico-Butte City Hwy, ca. 13 1/2 mi ssw of Chico. 30 Comment
  CHSC38639  Rhamnus ilicifolia Vernon Oswald 1983-5-23 539 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 500 ft e of Parking Area R (ca. 2.4 mi e of the power lines). Comment
  SEINET10493675  Rhamnus ilicifolia Mary Susan Taylor 1979-10-13 Taylor 2259 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC27307  Rhamnus tomentella subsp. tomentella T. B. Devine 1977-5-22 388 Butte N side of Pine Creek under Sycamore. % mi e of Hwy 99. 121 Comment
  CHSC33942  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-6-19 3963 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, on serpentine, ca. 1/4 mi ca. 20 mi ne of Oroville. 487 Comment
  SD111937  Rhododendron occidentale Barbara Ertter, Peter Strachan, and Lowell Ahart 1980-5-8 3319 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.5 miles northeast of Huncut between Marysville and Oroville. 49 Comment
  SEINET10449291  Rhododendron occidentale Mary Susan Taylor 1980-5-27 Taylor 2735 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-BC168129  Rhus aromatica A. A. Heller 1915-3-19 11773 Butte Along Rock Creek 12 miles northeast of Chico Comment
  CHSC82909  Rhynchospora capitellata L. P. Janeway; B. Castro 2002-7-28 7690 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill. 1231 Comment
  UC1562364  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 Comment
  CHSC11904  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville. 1500 Comment
  SEINET12215664  Ribes sanguineum C. D. Snider 1975-1 4 Butte Bear Creek Falls area, just S of P G & E rest area, Hwy 70 Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  UCD135433  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte South side of Concow Road, ca. 0.5 mile south of its junction with Ponderosa Way, ca 20 air miles noth of Oroville. Comment
  CHSC77982  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2000-5-13 8350 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
  JEPS120616  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-13 19230 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
  JEPS124256  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-10-26 20591 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC35646  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 230 Butte On bank of irrigation ditch; along Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  CHSC39066  Rorippa palustris var. occidentalis R. A. Schlising 1983-3-20 4397 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  CAS-BOT-BC146438  Rosa bridgesii Clarence R. Quick 1952-6-30 52 -100 Butte Ridge top, Big Bar Mt., east of Pulga Comment
  CHSC78098  Rosa canina Shelly Pirtle 1997-4-9 29 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek; Field 19-20. Near Butte Creek. Comment
  CHSC1595  Rosa gymnocarpa E. Silbersack 1931-4-21 Butte De Sabla. 762 Comment
  CHSC43214  Rosa gymnocarpa L. P. Janeway 1987-5-28 2115 Butte Along spur road from Coyote Gap to the F.S. Station. 1325 Comment
  CHSC111126  Rosa multiflora Lowell Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS119754  Rosa multiflora Lowell Ahart 2012-5-14 18060 Butte North side of Big Chico Creek, just east of the bridge across Big Chico Creek, Manzanita Avenue, Middle Bidwell Park, Chico. Comment
  CHSC60850  Rosa pisocarpa subsp. ahartii Vernon H. Oswald; Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  UC1926779 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  UC1926780 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  UC1926781 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC50561  Rosa pisocarpa subsp. pisocarpa Vernon Oswald; Lowell Ahart 1990-7-5 4346 Butte Camping area along Butte Creek on F-Line, 0.4 mi southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. On the bank of the creek. 1316 Comment
  CAS-BOT-BC274232  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville 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
  CHSC6656  Rubus armeniacus M. MacArthur 1968-6-17 167 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  CHSC65432  Rubus pensilvanicus Vernon Oswald 1989-4-20 3743 Butte The Midway between Richvale and Hwy 162. Along roadside ditches. 30 Comment
  CHSC111370  Rubus ursinus Lowell Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  CHSC52127  Rubus ursinus L. P. Janeway 1987-5-10 2050 Butte Along rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. At edge of pond in bend of rd. 853 Comment
  UC1586477  Rudbeckia occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4739 Butte 5.75 mi (air) ne of, just upstream from the bridge Brush Creek; Forest Rd 23N60, Jordan Creek-Marble Creek Rd, Oroville-Quin 1051 Comment
  CHSC33421  Rumex crispus R. A. Schlising 1981-6-14 4082 b Butte Richvale Vernal Pools; 1/4 mi S of Jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC64207  Rumex crispus S. C. Morey 1983-7-23 587 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC35030  Sagina apetala A. W. Ratcliff; R. A. Schlising 1980-4-6 3551 Butte About 5 miles S of Chico along Oroville/Chico Road, near its jct with Nead Road. In vernal pool at roadside. Comment
  UCSB64010  Sagina apetala Ahart, Lowell 1985-3-4 Butte At the Palermo Post Office, Palermo 36 Comment
  CHSC35031  Sagina decumbens subsp. occidentalis R. A. Schlising; J. D. Jokerst 1981-4-15 4031 Butte Southeastern part of county, along Hurleton/Swedes Flat Road, 0.6 mi N of junction with Swedes Flat Road. At roadside. 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
  CHSC2051  Sagittaria montevidensis subsp. calycina R. Morford 1931-5-5 Butte Irrigation ditch near Compton's. 54 Comment
  SEINET10905440  Sagittaria montevidensis subsp. calycina Mary Susan Taylor 1978-7-22 Taylor 1852 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC80067  Salix exigua L. P. Janeway; B. Castro 1999-6-4 6452 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  POM106846  Salix exigua C. C. Bruce 1897-05 1784 Butte Little Chico. Comment
  CHSC3195  Salix gooddingii Virginia Hagaman 1966-5-3 44 Butte Lower Bidwell Park along entrance road on east side of Highway-overpass. Comment
  CHSC65690  Salix gooddingii Vernon H. Oswald 1996-3-22 7249 Butte Sanctuary 1, S edge of Tract 2. 33 Comment
  CAS-BOT-BC125176  Salix lasiandra var. lasiandra A. A. Heller 1917-7-26 12812 Butte Butte Meadows 1280 Comment
  CHSC7060  Salix lasiolepis Lynn R Thomas 1969-3-1 1 Butte Bidwell Ave., 0.15 mi e of Rose Ave. bridge, Chico. 60 Comment
  POM107141  Salix lasiolepis C. C. Bruce 1898-05 2480 Butte Little Chico Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  CAS-BOT-BC129586  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
  CHSC65016  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1987-7-1 3074 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
  CHSC60851  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1993-6-22 5561 Butte In Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  POM219069  Salix lucida subsp. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville, Butte Creek. 1500 Comment
  CAS-BOT-BC129492  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte On a gravel bar on the bottom of North honcut Creek, about 2 miles north and 3 miles east of Honcut about 12 miles south-east of Oroville. 67 Comment
  UC883825  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 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
  SEINET13947656 Image available Salvia sonomensis A. A. Heller 1915-1 11810 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC48020  Sambucus mexicana Vernon Oswald 1987-7-13 3113 Butte Forest Service road ca. 0.75 mi (air) E of Summit Lake, ca. 1.5 mi (air) NE of Snow Mt, ca. 4.5 mi (air) SE of Jonesville. 1828 Comment
  CHSC6021  Sambucus mexicana M. MacArthur 1968-6-19 242 Butte NW end of bridge to PSA bld., Chico State College. 60 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
  UC195403  Sambucus mexicana A. A. Heller 1914-4-27 11326 Butte banks of winter stream 8 mi n Oroville Comment
  CAS-BOT-BC238616  Sambucus nigra subsp. caerulea Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  CHSC39236  Sanicula bipinnata M. S. Taylor; K. Tharp 1983-3-12 5234 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC23641  Sanicula bipinnatifida M. S. Taylor 1976-3-30 1038 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC87440  Sanicula bipinnatifida R. D. Fischer; Jenny Marr 2004-4-2 104 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail south of Pine Trail junction. 396 Comment
  RSA723863  Sanicula bipinnatifida Frances Kimball 1965-5-2 s.n. Butte Cherokee Road, 9.9 miles East of Calif. Rt. 70 between Oroville and Quincy; top of Table Mt. gully. Comment
  CHSC42094  Sanicula graveolens Lowell Ahart 1986-7-2 5345 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  UC635842  Sanicula graveolens Herbert F. Copeland 1938-7-4 Butte canyon of Jones Creek Jonesville 182 Comment
  CHSC45883  Sanicula tuberosa Lowell Ahart 1982-5-8 3412 Butte On the north slope above the road, about 1/2 mile south-west of the Forbestown Reservoir, about 4 1/2 miles north-east of Forbestown. 731 Comment
  CHSC60647  Sanicula tuberosa Vernon H. Oswald 1993-4-12 5256 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Near the top of an old track running through brushy live oak woodland from the bottom of the canyon up onto the grassy top of Table Mtn. 341 Comment
  CHSC79646  Sanicula tuberosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13749 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  UCD114699  Sanicula tuberosa Christopher Mallek 2008-1 HW1- 17 Butte Magalia. 756 Comment
  JEPS105598  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; between Bidwell Canyon Drive and Lake Oroville, 440 ft S of Arroyo Drive and 2200 ft SW of Bidwell Canyon Campground 283 Comment
  CAS-BOT-BC436861  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA699518  Saxifraga californica R. D. Fischer 2004-3-22 117 Butte Upper Bidwell Park in Chico, on the lower E side. along road leading to old pistol range at bottom of the nearly sheer road cut. Tuscan Formation and N facing 76 Comment
  POM92830  Saxifraga californica C. C. Bruce 1898-07 2042 Butte [Unspecified] Comment
  SEINET10838424  Saxifraga californica Mary Susan Taylor 1975-3-10 Taylor 416 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CAS-BOT-BC111661  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 miles west of Biggs. Comment
  CHSC56810  Scirpus diffusus L. P. Janeway 1987-6-13 2216 Butte Meadow just northeast of the junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CHSC56811  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Wet meadow just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  CHSC64241  Scirpus diffusus S. C. Morey 1983-8-1 646 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC600702  Scirpus diffusus H. F. Copeland 1928-8-17 1072 Butte Jonesville 1524 Comment
  CDA39135  Scirpus diffusus T. C. Fuller 1962-7-12 9202 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA39136  Scirpus saximontanus G. D. Barbe, T. C. Fuller 1982-6-14 3676 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  CAS-BOT-BC239959  Scribneria bolanderi Lowell Ahart 1980-5-4 2212 Butte Near Hurleton 600 Comment
  CHSC52200  Scutellaria californica L. P. Janeway 1988-6-19 2819 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/ firebreak along powerline (3-wire, wooden poles). 274 Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  RSA755770  Scutellaria siphocampyloides L. Ahart 2009-5-30 15808 Butte Southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 437 Comment
  CHSC33588  Scutellaria tuberosa M. S. Taylor 1981-4-28 3565 Butte N side of rd 23N28.2 in loop of the rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. ca. 23 air mi nw of Oroville. 929 Comment
  CHSC30874  Sedella pumila J. D. Jokerst 1979-4-2 1174 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  CHSC21005  Sedum spathulifolium M. S. Taylor 1975-4-29 546 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC24884  Sedum spathulifolium V. L. Keeran 1976-4-20 10 Butte Ca. 4 m e of Butte Creek and 0.41 km s of Covered Bridge, 10.66 km ese of Chico. 127 Comment
  SEINET12215663  Sedum spathulifolium Unknown 1977-1 20 Butte ca 20 M S of Big Chico Creek, 6 km ne of Chico. Richardson Springs Quadrangle. 7.5' N. central 100 Comment
  CHSC28877  Selaginella hansenii M. S. Taylor 1980-3-1 2330 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC39237  Selaginella hansenii M. S. Taylor; K. Tharp 1983-3-12 5237 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  UC306730  Selaginella hansenii Mrs. R. M. Austin May 1896 241 Butte Iron Canyon Comment
  HSC66337  Selaginella hansenii M. S. Taylor 1980-3-8 2370 Butte Shady train 100 ft. SW of Pulga Bridge over Hwy. 70, 28 mi. NE of Oroville 488 Comment
  SEINET10530445  Selaginella wallacei Mary Susan Taylor 1980-5-27 Taylor 2666 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
  SEINET10530446  Selaginella wallacei Mary Susan Taylor 1979-9-28 Taylor 2193 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC363287  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  CHSC43633  Senecio aronicoides Vernon Oswald 1984-6-11 1278 Butte Humboldt Rd. to Butte Meadows, 3.3 mi n-e of its jct. with Hwy 32. 1438 Comment
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  LA204252  Senecio integerrimus var. major E. B. Copeland; 1929-7-14 498 Butte Jonesville 502 Comment
  RSA0001555  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CHSC103954  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico. 182 Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CAS-BOT-BC364270  Senecio triangularis Lowell Ahart 1985-7-9 5117 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
  CHSC105813  Senecio triangularis Lowell Ahart 2010-9-21 17206 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
  RSA4450  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. 1550 Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CDA4260  Sesbania punicea L. Ahart 2000-8-23 8660 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC2186  Setaria pumila D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CHSC38855  Setaria pumila Vernon Oswald 1983-7-8 840 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  CHSC28392  Sibbaldia procumbens J. D. Jokerst 1979-6-21 305 Butte On the N.W. slope of Humboldt Peak. 2072 Comment
  JEPS100687  Sidalcea Dean Wm. Taylor, Robin Fallscheer 1995-8-6 15381 Butte 1.5 mi SW of Bald Mt. Summit; Lassen National Forest, Keyser Creek 1584 Comment
  CHSC29977  Sidalcea asprella Lowell Ahart 1980-5-17 q 2300 Butte About .5 mi SE of Hurleton, slightly E of Oak Grove Cemetery. 600 Comment
  SEINET7085242  Sidalcea asprella Steven R. Hill 2010-7-17 38553 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
  UC725427  Sidalcea calycosa A. A. Heller 1942-5-27 16479 Butte Clark Road , Clark Road (Clear Creek Schoolhouse) Comment
  CHSC43354  Sidalcea diploscypha Lowell Ahart 1978-5-30 1745 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  JEPS50070  Sidalcea diploscypha W. L. Jepson 1932-5-9 16369 Butte e Cana; e of Cana 57 Comment
  CHSC96335  Sidalcea gigantea L. P. Janeway 2006-8-12 8838 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  CHSC105803  Sidalcea glaucescens Lowell Ahart 2010-9-28 17246 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  CHSC44965  Sidalcea hartwegii Cathy Young 1988-4-24 12 Butte Ca. 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  CHSC4685  Sidalcea hartwegii R. Carter 1966-4-30 388 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt.: growing 100 yds W of house on hillside. 243 Comment
  RSA754584  Sidalcea hartwegii L. Ahart 2009-4-22 15583 Butte W side of Guardians Trail, about 100 yards N 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
  RSA31659  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte Near covered bridge on Butte Creek east of Chico. Comment
  UC140833  Sidalcea hirsuta Mrs. R. M. Austin Apr. 1896 693 Butte plains e Chico; plains e of Chico Comment
  UC726313  Sidalcea hirsuta A. A. Heller 1927-5-3 14362 Butte ten mi n Chico; ten mi n of Chico Comment
  UCD80450  Sidalcea malviflora CNPS SN Foothill Team 2005-5-5 SNFN 0158 f Butte City of Chico, Upper Bidwell Park, off Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  CDA36504  Sidalcea malviflora subsp. asprella T. C. Fuller 1970-4-17 19389 Butte 114 Putnam Dr., east above Oroville. 0 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
  LA205945  Sidalcea oregana subsp. spicata E. B. Copeland; 1930-7-15 sn Butte Jonesville 1500.0 Comment
  CHSC44387  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC99019  Silene antirrhina Lowell Ahart 2008-5-21 14773 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, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  UC1586524  Silene bernardina Lowell Ahart 1991-9-19 6729 Butte about 2 mi ne Coyote Gap (about 2 mi nw of Four Trees, near where the two branches of Wildcat Creek come together); Wildcat Creek, nw of Four Trees, ne of Coyote Gap 1219 Comment
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 Comment
  CHSC24877  Silene laciniata subsp. californica T. L. Reynolds 1976-4-23 57 Butte .6 mi ne of Covered Bridge, 7.5 mi ese of Chico. 152 Comment
  CHSC38044  Sinapis arvensis R. E. Preston 1983-1-9 374 Butte At roadside; on w side of Nelson Rd, 100 ft e of RR crossing, Nelson. 36 Comment
  CHSC48345  Sisymbrium irio Vernon Oswald 1984-3-24 1103 Butte Chico Municipal Airport, ca. 200 ft e of the e end of Piper Ave. 82 Comment
  CHSC10688  Sisymbrium officinale Lowell Ahart 1962-4-26 Butte Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC135399  Sisyrinchium H. F. Copeland 1920-8-29 165 Butte Jonesville Meadow 1219 Comment
  RSA727113  Sisyrinchium bellum Lowell A. Ahart 2007-4-30 13706 Butte About 1.5 miles northwest of Concow Creek, about 1.5 miles west of Concow Reservoir. 358 Comment
  UC478543  Smilacina racemosa E. B. Copeland 1931-6-16 616 Butte Jonesville; at the Summit 2100 Comment
  CDA42899  Solanum americanum L. Ahart 2012-6-14 18185 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC113978  Solanum americanum Lowell Ahart 2014-11-17 19911 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  JEPS119911  Solanum americanum Lowell Ahart 2012-10-20 18514 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS120606  Solanum americanum Lowell Ahart 2013-11-13 19248 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
  NY821125  Solanum parishii H. E. Brown 1897-4-15 191 Butte Near Clear Creek 53 Comment
  UCSB63941  Solanum parishii Lorenz, Thomas 1972-4-23 Butte 7.6 mi 8 of highway 99E overpass and 20 ft below high 32 Comment
  POM69611  Solanum umbelliferum C. C. Bruce 1898-03 1872 Butte Plains [no specific locality given] Comment
  CHSC48199  Solidago elongata Vernon Oswald 1987-7-16 3120 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  CAS-BOT-BC364942  Solidago velutina subsp. californica Lowell Ahart 1988-7-24 6130 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CHSC116718  Soliva sessilis Lowell Ahart 2016-5-24 20856 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS127010  Soliva sessilis Lowell Ahart 2016-5-24 20856 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC109152  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CHSC8560  Sonchus oleraceus M. MacArthur 1968-6-12 165 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science bld., Chico State College campus. 60 Comment
  JEPS127078  Sonchus oleraceus Lowell Ahart 2015-11-21 20691 Butte On the north side of home, Peter Ahart Ranch, about 1 1/2 miles north and one mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC33957  Sparganium emersum subsp. emersum M. S. Taylor; L. Ahart 1981-8-16 4195 A Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. In pond. 1828 Comment
  SEINET3825672  Sparganium eurycarpum Herbert L. Mason, Verne Grant 1946-8-14 13016 Butte Canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC40791  Spergula arvensis subsp. arvensis Lowell Ahart 1985-5-31 5031 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC31537  Spergularia bocconi L. Ahart 1978-4-18 1647 Butte Along the edges of roads. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS107747  Spergularia bocconi Lowell Ahart 2005-5-28 11827 Butte Bottom of vernal pools, 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 67 Comment
  CHSC94891  Spergularia rubra Lowell Ahart 2006-9-28 13367 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
  SEINET10537503  Spergularia rubra Lowell Ahart, James D. Jokerst 1985-5-10 Ahart 4942 Butte Eastern Table Mountain area in gulchlands, about 8 miles north of Oroville. Comment
  CHSC109084  Spiraea Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 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
  CHSC42800  Spiraea douglasii L. P. Janeway 1987-6-8 2168 Butte Along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  CHSC42801  Spiraea douglasii L. P. Janeway 1987-6-26 2317 Butte SW end of Logue Meadows. 1325 Comment
  JEPS120832  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SBBG128718  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CHSC20526  Spiraea prunifolia Pamela Caldwell 1972-3-2 Butte CSUC Campus. N entrance Lassen Hall Bridge. Citrus Ave. Comment
  JEPS98321  Spiranthes porrifolia Lowell Ahart 2000-6-6 8453 Butte 5 air miles E of Oroville Dam (old gold mining pit SE 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
  CHSC101830  Stachys ajugoides var. rigida Lowell Ahart 2009-5-23 15760 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast 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
  CHSC43640  Stachys ajugoides var. rigida B. Castro 1987-5-16 90 Butte On narrow ridge just e of Cohasset Hwy, 9.5 mi by road from East Ave. in Chico. 539 Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. 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']. 810 Comment
  CHSC808  Stachys ajugoides var. rigida M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  UC196365  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  UC600445  Stachys ajugoides var. rigida H. F. Copeland 1927-9-4 Butte Jonesville Comment
  UCD80405  Stachys rigida CNPS SN Foothill Team 2005-5-25 SNFN 0170 b Butte City of Chico, about 300 m south of northern boundary of Upper Bidwell Park, on the east side of Big Chico Creek. 278 Comment
  CHSC39548  Stachys stricta Lowell Ahart 1983-7-29 4217 Butte About 2 1/2 miles west on Bloomer Hill Road from the Oroville Quincy Highway, about 13 miles north of Oroville. 500 Comment
  UC1594588  Stellaria borealis subsp. sitchana Lowell Ahart 1992-6-26 6779 Butte about 0.5 mi nw Merrimac (on e side of Rogers Cow Camp) 1219 Comment
  SEINET10833472  Stellaria jamesiana Mary Susan Taylor 1978-7-19 Taylor 1753 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC104004  Stellaria media Lowell Ahart 2010-5-28 16739 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CHSC230  Stellaria media S. Carter 1929-4-22 Butte Chico Street. 59 Comment
  JEPS115186  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
  CHSC61639  Stellaria obtusa Lowell Ahart 1993-9-13 7229 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC70721  Stellaria pallida Vernon Oswald 1998-3-11 8887 Butte Northern Sacramento Valley. Wurlitzer Unit, Vina Plains Preserve. Along the north fence line just east of gate on Haille Rd. 57 Comment
  CHSC50823  Stephanomeria elata Vernon Oswald 1990-7-28 4402 Butte Doe Mill Rd (Ponderosa Way), 1.5 mi (odometer) southwest of Butte Creek Bridge, ca. 2 miles (air) east-northeast of Forest Ranch. Roadside. 847 Comment
  JEPS104645  Stephanomeria elata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  CHSC116153  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte On the west side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  CHSC42200  Streptanthus diversifolius Victoria Lorber 1986-4-1 Butte Table Mountain, 6.4 mi n of Oroville on Cherokee-Table Mtn Road. 243 Comment
  CDA11185  Streptanthus polygaloides G. F. Hrusa 1991-5-29 8437 Butte Sierra Nevada; At junction of Hwy 70 and Pulga Rd. in Feather River Cyn. 473 Comment
  UC659997  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  UCD116109  Streptanthus polygaloides R. E. Preston 1982-6-2 291 Butte 0.7 mile northeast of Lime Saddle Powerhouse, 4.5 miles southeast of Paradise. 304 Comment
  UCD116302  Streptanthus tortuosus Robert E. Preston 1984-6-19 462 Butte 12 km NE of Oroville, Oro-Quincy Hwy on north side of Canyon Creek bridge. 305 Comment
  CHSC92582  Streptanthus tortuosus var. orbiculatus L. P. Janeway; Matt Brown 2005-5-17 8391 Butte Northern High Sierra Nevada. Plumas National Forest; opening granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  CHSC43444  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1978-5-2 1706 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 487 Comment
  SEINET5505734 Image available Styrax officinalis var. californicus Margaret J. Williams, Wayne Roderick 1984-1 84- 23 -2 Butte Feather River Canyon, Hwy. 70, 1.5 mi. west of Poe Power Dam 457 Comment
  CHSC52375  Styrax officinalis var. redivivus L. P. Janeway 1989-5-17 3255 Butte Along rd to Forbestown Diversion Dam 2.5 mi from Forbestown Rd. Single small shrub at top of cutbank. 845 Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  CHSC6613  Symphoricarpos albus M. MacArthur 1968-6-17 315 Butte Yard of Building V, Chico State College campus. 60 Comment
  CHSC48021  Symphoricarpos mollis Vernon Oswald; Lowell Ahart 1987-7-1 3055 Butte Scotts John Rd. 1.3 mi N of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ENE of Jonesville. 1828 Comment
  CAS-BOT-BC97691  Symphyotrichum chilense A. A. Heller 1914-9-3 11760 Butte On the Chico-Hamilton Road, 6 miles from Chico Comment
  CAS-BOT-BC97692  Symphyotrichum chilense Lowell Ahart 1981-8-31 3062 Butte Wyandotte Lake, E of Oroville 450 Comment
  CAS-BOT-BC97694  Symphyotrichum chilense Lowell Ahart 1986-11-9 5433 Butte along the edge of the Oroville Quincy Highway, near the Berry Creek School 518 Comment
  CHSC40561  Symphyotrichum chilense Lowell Ahart 1985-10-12 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  CAS-BOT-BC97686  Symphyotrichum chilense Lowell Ahart 1984-12-28 4833 Butte about 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville 400 Comment
  CHSC65886  Symphyotrichum lanceolatum var. hesperium Vernon H. Oswald 1996-4-20 7401 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacra-mento Valley. 32 Comment
  CAS-BOT-BC98089  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  UC725487  Symphyotrichum subulatum A. A. Heller 1923-10-13 13828 Butte near Richvale Comment
  CHSC3380  Syringa vulgaris Robert L. Smith 1966-4-4 55 Butte 5 miles south of post office. Paradise. Comment
  CAS-BOT-BC221935  Taeniatherum caput-medusae John Thomas Howell 1967-6-22 42628 Butte Magalia 701 Comment
  RSA299132  Taeniatherum caput-medusae J. T. Howell 1962-6-15 37484 Butte Serpentine area. 732 Comment
  SEINET11688675  Taeniatherum caput-medusae T. B. Devine 1980-1 608 Butte beside Horseshoe Lake in Bidwell Park, Chico Comment
  CHSC40474  Tanacetum parthenium Lowell Ahart 1985-7-9 5109 Butte Along Ponderosa Way, about 1/2 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 1/2 miles north-west of Forbestown. 457 Comment
  CAS-BOT-BC376823  Tanacetum vulgare Lowell Ahart 1988-9-4 6172 Butte Along both sides of the Skyway, south end of Stirling [Stirling] City 1075 Comment
  JEPS117227  Tauschia hartwegii Lowell Ahart 2010-5-7 16631 Butte On south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico 301 Comment
  UCD21572  Tauschia hartwegii Joe Connell 2003-5-5 s.n. Butte Yankee Hill. 1500-2000 ft. Comment
  CHSC45804  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-5 324 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek; near stream. 1487 Comment
  CAS-BOT-BC88224  Thysanocarpus curvipes John Thomas Howell 1976-4-1 51527 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 152 Comment
  CHSC19945  Thysanocarpus curvipes M. S. Taylor 1975-3-10 413 Butte On bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC31642  Thysanocarpus curvipes L. Ahart 1975-3-26 722 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC88210  Thysanocarpus curvipes Lowell Ahart 1961-2-25 s.n. Butte Salmon Hole, Chico. 300 Comment
  CAS-BOT-BC88218  Thysanocarpus curvipes Lowell Ahart 1981-3-29 2709 Butte Along Ponderosa Way, Ponderosa Dam. 500 Comment
  CAS-BOT-BC88221  Thysanocarpus curvipes Lowell Ahart 1981-4-6 2741 Butte Near the old homestead on the south side of the South Butte, Sutter Buttes. 350 Comment
  CAS-BOT-BC88222  Thysanocarpus curvipes Lowell Ahart 1982-3-13 3251 Butte About 100 meters west of the dam that is aobut 0.5 mile east of Richardson Springs, about 12 miles northeast of Chico. 160 Comment
  CHSC109177  Thysanocarpus curvipes var. curvipes Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18014 Butte Weedy field on the north side of the path, north of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 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
  CHSC103688  Thysanocarpus curvipes var. elegans Lowell Ahart 2010-4-30 16597 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  HSC32402  Thysanocarpus radians Gary S. Lester 1974-4-20 109 Butte Cherokee-Table Mtn. Rd. 305 Comment
  CHSC49044  Tonella tenella Vernon Oswald 1986-4-12 1067 Butte Butte Creek Trail ca. 1.5 mi s of Doe Mill Rd. 609 Comment
  UC1532343  Torilis arvensis Vernon Oswald Jun 5 1985-Jun 23 1985 1809 Butte River Rd. 0.7 mi. s.w. of its junction w/ Chico River Rd. 36 Comment
  SEINET11192984  Torilis nodosa B. Ertter, L. Ahart, J. Strachan 1980-5-6 3281 Butte Peter Ahart Ranch, ca 2.5 miles NNE of Honcut, between Oroville and Marysville. 30 Comment
  NY17661  Torreya californica W. S. Lyon 08 1890 4960 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET10905241  Torreya californica C. C. Bruce Bruce 675 Butte Butte Creek, Butte, County. Comment
  CAS-BOT-BC172929  Toxicodendron diversilobum A. A. Heller 1916-4-13 12321 Butte Stilson [canon] Canyon of Chico Comment
  JEPS116008  Tox