Search Results — 2000 specimen records retrieved (1614 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
  CHSC27230  Abelia chinensis P. Moyer 1971-9-26 8 Butte Front of library to E side. 60 Comment
  SEINET10530548  Abies concolor Lowell Ahart, Peter Ahart 1984-9-26 Ahart 4812 Butte On dry deep soil on the banks of the South Fork of the Feather River, near the new bridge, ca. 1 mi N of Golden Trout Crossing, ca. 18 mi E of Feather Falls. Yellow Pine Forest; 700 m elev. 700 Comment
  CHSC1769  Abronia latifolia R. Morford 1931-4-30 Butte Salmon Hole, Chico Creek. 152 Comment
  CHSC94124  Abutilon theophrasti Lowell Ahart 2006-7-4 12912 Butte In an idle rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  CHSC97719  Abutilon theophrasti Lowell Ahart 2007-10-31 14516 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
  SEINET10973037  Acer circinatum Mary Susan Taylor 1979-10-5 Taylor 2224 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
  CHSC46797  Acer glabrum var. torreyi R. A. Schlising; L. Janeway 1988-7-22 4622 Butte NE of Philbrook Lake, near county line 1935 Comment
  CHSC24892  Acer macrophyllum E. Rilla 1976-4-4 2 Butte ca. 10 mi w of junc of Ponderosa Way and Hwy 32, ca. 3 ft n of Ponderosa Way, ca. 22 mi ne of Chico. 609 Comment
  SEINET7893958  Acer macrophyllum M. J. Williams 1967-4-15 s.n. Butte Feather River Highway. 671 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
  UCD55247  Achnatherum lemmonii G. F. Hrusa; T. D. Wilfred 1997-5-1 13701 Butte NE side of upper end of Paradise Lake. Where last tributaries from E enter. 790 Comment
  CHSC107591  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 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
  CHSC39262  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1 1/2 miles south-east of Stirling Ciry. Section 4. 1100 Comment
  CHSC111347  Achyrachaena mollis Lowell Ahart 2012-5-2 17951 Butte On damp dark clay soil, 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  CHSC33349  Achyrachaena mollis R. M. Winchell 1980-4-23 2 Butte N of Chico, in annual grassland by vernal pool between Singer Creek and Cana-Pina Creek Road. 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
  CHSC84859  Acmispon argophyllus var. fremontii L. P. Janeway; John Hunt 2003-6-6 7815 Butte Northern Sierra Nevada Foothills. South-facing slope above Lake Oroville 650 m north-northeast of the north end of Bidwell Bar Bridge. 296 Comment
  CHSC97319  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-26 9073 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC39499  Acmispon brachycarpus Lowell Ahart 1983-5-28 4022 Butte Above the trail to the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  JEPS122005  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte Below the high water line of Lake Oroville, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  RSA0037018  Acmispon nevadensis var. nevadensis Lowell A. Ahart 2013-11-17 19269 Butte 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
  CDA24174  Aconitum columbianum T. C. Fuller 1962-7-12 9190 Butte 2.0 miles east of Butte Meadows. 0 Comment
  CAS-BOT-BC412868  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville 2100 Comment
  CAS-BOT-BC412869  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CAS-BOT-BC29923  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CAS-BOT-BC65619  Adiantum jordanii Carol S. Ellingboe 1978-4-23 11 Butte ca. 4.5 m s of Chico Creek and 1.6 km e of Five Mile Recreation Area, 30 m w of Chico Police Shooting Range 100 Comment
  RSA724909  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67. 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. NAD 83. 757 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  JEPS115882  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, 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 379 Comment
  SEINET6738700 Image available Agoseris heterophylla R. McKee 1909-1 s.n. Butte Chico Comment
  CHSC31730  Agrostis avenacea L. Ahart 1977-4-29 1335 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41978  Agrostis avenacea 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
  SEINET10954199  Agrostis elliottiana Lowell Ahart 2004-4-6 Ahart 10729 Butte T17N, R4E, northwest 1/4 Section 3. Peter Ahart Ranch, about 2 1/4 miles north oand 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 35 Comment
  CHSC44913  Agrostis exarata Lowell Ahart 1988-7-24 6127 Butte At the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  UCD52427  Agrostis exarata H. F. Cofeland 1932-8-20 s.n. Butte Jonesville. Comment
  UC392236  Agrostis idahoensis E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC44450  Agrostis microphylla Lowell Ahart 1988-5-28 6007 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS94190  Agrostis microphylla Lowell Ahart 1998-4-29 7952 Butte ca. 7 mi. n. Oroville (n.e. of large parking area on North Table Mt., on e. side of Cherokee Rd.); North Table Mt. 426 Comment
  CHSC49498  Agrostis scabra Vernon Oswald 1987-7-8 3100 Butte Butte Creek Reservoir, on the north side of Butte Creek east of the Skyway, east of Chico. 74 Comment
  JEPS95031  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  CHSC113417  Agrostis thurberiana Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  RSA701233  Agrostis variabilis L. Ahart 2004-8-9 11358 Butte on the very upper reaches of Jackson Creek, on the northeast side of English Mountain, about 2 3/4 miles east of the east end of Bowman Lake. 2264 Comment
  CHSC38721  Ailanthus altissima Vernon Oswald 1983-5-22 528 Butte Upper Bidwell Park, Chico, along the edge of the parking area at the Horse Arena. 79 Comment
  CHSC92548  Aira caryophyllea L. P. Janeway 2005-3-10 8345 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CDA43009  Albizia julibrissin L. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  SEINET10841174  Albizia julibrissin Mary Susan Taylor Taylor 780 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC21037  Alisma triviale M. S. Taylor 1975-10-3 922 Butte In slough, at bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  RSA304499  Allium amplectens Barbara Ertter, L. Ahart, Jeff Strachan 1980-5-6 3269 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville 30 Comment
  UCD138474  Allium amplectens H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CDA39428  Allium amplectens L. L. Heinricks 1974-5-2 s.n. Butte On both sides of Wilbur Road. 0 Comment
  SEINET8112090  Allium amplectens W. Roderick 1967-4-15 s.n. Butte SW of Paradise. 457 Comment
  SEINET8533641 Image available Allium amplectens H. E. Brown 1897-1 172 Butte Near Clear Creek Comment
  CAS-BOT-BC135816  Allium jepsonii L. P. Janeway 1993-7-2 4423 Butte Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swayne HIll to Big Bar Mtn.) - Plumas National Forest, Oroville Ranger District 926 Comment
  CHSC74028  Allium jepsonii E. Hubert 1997-7-23 Butte Ca 7 air mi NW of Brush Ck, 0.5 mi E of Hungry Hunt Peak, 50 ft W of USFS Rd 23N28. 1103 Comment
  CAS-BOT-BC472967  Allium membranaceum C. R. Quick 1955-6-20 55 -32 Butte Steep NE slope above Mill Creek Road (Pulga Road), 2.5 miles easterly from Feather River Highway Comment
  SBBG29977  Allium validum E. B. Copeland 1930-7-21 Butte Jonesville 1500 Comment
  CHSC46477  Alnus rhombifolia Lowell Ahart 1977-11-21 1226 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  JEPS114590  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 217 Comment
  CHSC8195  Alopecurus saccatus J. G. Moore 1969-4-18 27 Butte Table Mtn. 50 yds. w of Cherokee Rd., 2 mi. s of Oregon City turnoff. 381 Comment
  UCSB38454  Alopecurus saccatus Reisentz, Paul 1979-5-13 Butte 6 mi N on Table Mtn Rd from State Hwy 162; Oroville Comment
  JEPS124125  Amaranthus albus Lowell Ahart 2015-10-9 20540 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC116123  Amaranthus californicus Lowell Ahart 2015-10-26 20589 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
  CHSC80575  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the 'Deer Pen', Chico. 60 Comment
  RSA718045  Amaranthus deflexus R. D. Fischer 2005-9-14 858 Butte Northern Sierra Nevada foothills, lower Paradise, at a residence on Black Olive Street 366 Comment
  SEINET10478807  Amaranthus graecizans Mary Susan Taylor 1977-8-16 Taylor 1442 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  RSA0037009  Amaranthus palmeri Lowell A. Ahart 2013-10-16 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about one mile east of Biggs. 30 Comment
  CHSC42946  Amaranthus powellii Lowell Ahart 1987-7-3 5756 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC51348  Ambrosia acanthicarpa Vernon Oswald; Lowell Ahart 1990-10-11 4459 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. 259 Comment
  JEPS115043  Ambrosia psilostachya Lowell Ahart 2007-10-30 14509 Butte On the south side of the water ditch, on the north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  JEPS117527  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 31 Comment
  CHSC94336  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  SD241892  Ammannia coccinea Lowell Ahart 2003-6-23 10 300 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 29 Comment
  SEINET3450928  Ammannia coccinea Unknown 2003-6-23 10300 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CHSC26653  Ammannia robusta M. S. Taylor 1977-11-10 1527 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butt Hwy, on n side of Nelson-West Rd in large drying creek, ca. 23 mi s of Chico. 30 Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  CHSC31578  Amsinckia intermedia L. Ahart 1975-4-6 741 Butte On dredger piles along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  RSA0090970  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10969124  Amsinckia intermedia Mary Susan Taylor 1973-1 Taylor 39 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD119610  Amsinckia intermedia A. A. Heller 1918-4-19 12984 Butte Pine Creek, 12 miles N of Chico. Comment
  UC1609202  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  CHSC116707  Anagallis minima Lowell Ahart 2016-5-15 20832 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
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC51950  Andropogon glomeratus var. scabriglumis L. P. Janeway 1988-11-19 3158 Butte NW side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC72745  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  JEPS99034  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile NW of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  CHSC38321  Anthemis cotula Vernon H. Oswald 1983-6-13 674 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  SFV11430  Anthemis cotula M. L. Vincent 1968-6-5 771 A Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC113292  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  JEPS95606  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte 2 air miles N and 3 1/2 mi E of Forbestown (along S side of dirt road to Forbestown Reservoir, near Woodleaf Creek, 3/4 mi SW of Forbestown Reservoir Dam) 762 Comment
  CAS-BOT-BC447660  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC12932  Aphyllon epigalium subsp. epigalium T. A. Salinas 1972-2-5 2 Butte Found ca. 400 yds. w of Big Butte Creek. 385 Comment
  CHSC40376  Apocynum cannabinum Lowell Ahart 1985-6-30 5072 Butte Along edge of the Oroville Bangor Highway, 100 yards east of the intersection with Wyandotte Miners Ranch Road, about 7 miles south-east of Oroville. 274 Comment
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  CHSC39785  Arbutus menziesii Eloise Gallatin 1935-5-19 Butte Lake Madrone. Comment
  CHSC583  Arbutus menziesii V. Keeler 1935-4-28 Butte Magalia. 731 Comment
  SBBG17292  Arbutus menziesii M. Vincent 1961-3-30 Butte Spense Rd near cross street Pearson Comment
  CAS-BOT-BC407715  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte 1 air mile NE of Bald Mountain and 4.25 air miles NE of Stirling City 1676 Comment
  UCR231088  Arctostaphylos Anna M. Hurlbutt 2009-8-12 017 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  CAS-BOT-BC27258  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Neal Road near the junctin of the first road E of the Bille Road, old sawmill site. East of Paradise. Comment
  CAS-BOT-BC24435  Arctostaphylos manzanita J. D. Jokerst 1985-7-18 2516 Butte Canyon of Rock Cr. between cr. and Cohasset Hwy, nw. of Cohasset, lower canyon slope. Comment
  CAS-BOT-BC24409  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51567 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38875  Arctostaphylos manzanita subsp. manzanita Saichi Kawahara 1968-5-4 390 Butte Paradise, James Ripley's property, Graham road. 640 Comment
  CHSC109112  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  CHSC40333  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte About 2 miles south of Paradise. 167 Comment
  CHSC67925  Arctostaphylos manzanita subsp. manzanita James D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1682 Butte Top of N. Table Mtn. at its NW corner. Comment
  POM210201  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 s.n. Butte Humboldt Grade, about 12 miles from Chico. Comment
  RSA31999  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  RSA32000  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC726641  Arctostaphylos mewukka A. A. Heller 1942-1-29 16355 Butte on State Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  RSA795329  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 742 Comment
  CAS-BOT-BC38526  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51107 Butte Paradise. Castle Drive near Cliff Drive. 609 Comment
  CAS-BOT-BC38527  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51109 Butte Paradise. Skyway just ne. of Billie Rd. 609 Comment
  CAS-BOT-BC38556  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51563 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38557  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51564 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38568  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15489 Butte Neal Road, Paradise at the Game Refuge above Bowle's Mansion. Comment
  CAS-BOT-BC38573  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6303 Butte Paradise at berkshire Way and Bille rd. just off The Skyway. 274 Comment
  UC726236  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte on the Neal Road w Optimo Lodge (between Paradise and Magalia) Comment
  POM219427  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  POM219294  Arctostaphylos patula H. F. Copeland 1928-6-5 223 Butte Jonesville. 1524 Comment
  SEINET2028695 Image available Arctostaphylos patula H. F. Copeland 1932-6-29 a 7 Butte The Summit, Jonesville Comment
  SEINET10449339  Arctostaphylos viscida Mary Susan Taylor 1981-3-18 Taylor 3430 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
  CAS-BOT-BC47374  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51087 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47382  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51090 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC76339  Arenaria kingii var. glabrescens L. P. Janeway; B. Castro 1999-8-1 6512 Butte 0.3 mi north of the top of Snow Mountain, 0.5 mi southwest of Summit Lake. North-facing flank of Snow Mountain. 2017 Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  CAS-BOT-BC146312  Aristida ternipes var. gentilis Lowell Ahart 1986-11-14 5466 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CAS-BOT-BC146314  Aristida ternipes var. gentilis Lowell Ahart 1983-8-16 4277 Butte Sierra Nevada. One mile east of Chico, on Highway 32. 100 Comment
  CAS-BOT-BC400421  Aristolochia californica Mrs. C. C. Bruce 1897-3-1 1794 Butte Little Chico Comment
  CHSC115  Aristolochia californica F. Roos 1930-3-16 Butte On Oroville road near Chico. 76 Comment
  CHSC28870  Aristolochia californica M. S. Taylor 1980-2-17 2359 Butte Along a dirt road, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC32666  Aristolochia californica M. S. Taylor 1981-3-24 3442 Butte Steep embankment, s side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  SEINET10937924  Aristolochia californica Mary Susan Taylor 1975-4-29 Taylor 543 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC46448  Arnica chamissonis Vernon H. Oswald; Lowell Ahart 1989-6-27 3822 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CAS-BOT-BC295833  Arnica dealbata E. B. Copeland 1929-7-18 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC82410  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  UCD129132  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville. 1600 Comment
  CAS-BOT-BC90290  Artemisia douglasiana John Thomas Howell 1961-9-22 36721 Butte Bank of Feather River, Oroville 53 Comment
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 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 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC93884  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC94100  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC33905  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Creek crossing 20N15 Lumpkin Ridge Rd, 1.9 mi w of Golden Trout Crossing on south fork Feather River, ca. 5 air mi e of Feather Falls. 1097 Comment
  CHSC44082  Asclepias cordifolia L. P. Janeway 1987-6-27 2335 Butte Ridge overlooking Little Kimshew Cr to the east; 0.6 mi N of Ramsey Bar along Concow Rd. 1432 Comment
  CHSC96824  Aspidotis californica Lowell Ahart 2007-5-22 13917 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  UC1549535  Aspidotis californica M. S. Taylor and V. Oswald 1983-1-14 5213 Butte Devils Kitchen Upper Bidwell Park 274 Comment
  JEPS345  Aspidotis californica R. M. Austin Apr. 1883 Butte Big Chico Canyon Comment
  OBI74995  Aspidotis densa Hannah M. Fugle 2011-1-17 5 Butte Magalia, ca. 400 ft E of Coutelenc Rd, ca. 0.1 mi up Coutelenc rd from Skyway Rd 762 Comment
  CHSC67362  Astragalus gambelianus James D. Jokerst; R. A. Schlising 1985-4-8 2215 Butte Serpentine Point W and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. In vicinity of highway right of way fence. 548 Comment
  HSC93425  Astragalus gambelianus L. Ahart 1995-5-30 7577 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CHSC86570  Asyneuma prenanthoides L. P. Janeway; Christine Hantelman 2003-7-3 7866 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.7 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. Steep north-facing slope above a small spring. 279 Comment
  JEPS87417  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  SEINET10532283  Athyrium filix-femina Mary Susan Taylor 1978-7-19 Taylor 1737 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC36961  Athyrium filix-femina var. cyclosorum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi ne of Stirling City. 1463 Comment
  CHSC4073  Athysanus pusillus H. E. Lindahl 1967-4-4 14 Butte 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. Comment
  CHSC476  Athysanus pusillus G. Spurlock 1935-4-7 Butte Covered bridge on Butte Creek. Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  UCD97655  Atriplex rosea L. Ahart 1982-7-10 3662 Butte in parking area around check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CHSC61036  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  UCR74664  Avena fatua Lowell Ahart 1981-5-24 2835 Butte Sierra Nevada Mtns., Peter Ahart Ranch, c. 2 mi N and 0.5 mi east of Honcut 50 Comment
  CHSC90953  Azolla filiculoides Lowell Ahart 2005-4-14 11703 Butte East of the railroad tracks, in the stream at the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  RSA755370  Azolla filiculoides Lowell A. Ahart 2009-10-8 16412 Butte In a deep large ditch on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 air miles southwest of Gridley. 20 Comment
  CHSC103016  Azolla microphylla Lowell Ahart 2009-10-8 16412 Butte In a deep large ditch, on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CAS-BOT-BC98009  Baccharis pilularis Sally Bianco 1995-11-19 1054 Butte Aptos. San Andreas Rd and Hwy 1 intersection 76 Comment
  CHSC63694  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte On the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  CHSC51719  Baccharis pilularis subsp. consanguinea M. Bailey 1990-10-30 479 Butte Growing along south side Middle Branch Clear Creek, at a point halfway between Butte Campus Drive and service road. Butte College Campus. Comment
  UCR51787  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville 1677 Comment
  CHSC36680  Barbarea orthoceras R. E. Preston 1982-6-25 317 Butte On the bank of Kanaka Cr; in n meadow at site of Powellton, ca. 3 mi nw of Stirling City. 1097 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC3586  Bellis perennis Susan Carrauthers 1966-3-1 22 Butte City of Chico. Civic park between E. 4th and E. 5th Streets and Broadway and Main Street. Comment
  CHSC3604  Bellis perennis Gerry Carrauthers 1966-3-1 22 Butte City of Chico. Civic park between E. 4th and E. 5th Streets and Broadway and Main Street. Comment
  JEPS118614  Bellis perennis L. P. Janeway 2011-6-2 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico) and Sol-Wil-Le-No Ave. Chico 7.5; quad. Comment
  JEPS119511  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-2 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  JEPS122245  Bergia texana Lowell Ahart 2014-9-23 19865 Butte On the southeast part of Horseshoe Lake, near the northwest corner of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UC141888  Betula glandulosa Mrs. R. M. Austin July 1896 63 Butte Colby Comment
  CDA10506  Bidens frondosa L. Ahart 2006-9-11 13274 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. Comment
  CHSC76266  Bidens frondosa Lowell Ahart 1999-9-21 8262 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC412955  Bistorta bistortoides Vesta Holt 1932-5-1 s.n. Butte Mountains near Chico Comment
  CHSC35627  Blennosperma nanum R. E. Preston 1982-2-18 166 Butte Field on S side of Keefer Lane, ca. 1 mi W of Cohasset Hwy; ca. 6 mi N of downtown Chico. 97 Comment
  HSC32592  Blennosperma nanum var. nanum Linda M. Barker 1974-4-20 159 Butte Table Mtn., Central Valley 305 Comment
  CHSC38021  Boechera breweri R. E. Preston 1981-6-13 87 Butte S side of canyon, middle fork of Feather River at Milsap Bar, ca. 20.5 mi NE of Oroville. 609 Comment
  CHSC10614  Boechera breweri subsp. shastaensis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  UC955480  Botrychium multifidum Miss M. Hyatt Sep 1914 Butte Jonesville Comment
  CHSC40384  Boykinia major Lowell Ahart 1985-7-9 5114 Butte Along the banks of 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
  CHSC104858  Brachypodium distachyon Lowell Ahart 2010-6-20 16814 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcutt Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC42850  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 south-east of Jarbo Gap. 304 Comment
  CHSC33168  Brassica nigra R. E. Preston 1981-5-27 71 Butte Roadside, on n side of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  UC204947  Brassica nigra A. A. Heller 1914-3-13 11199 Butte low hills 8 mi n of Oroville (in many places in the Sacramento Valley); Sacramento Valley Comment
  UCD114731  Brassica nigra L. Ahart 1982-5-29 3449 Butte N of Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Comment
  CHSC38046  Brassica rapa R. E. Preston 1983-1-9 376 Butte In ditch on w side of Aguas Frias Rd, 1.2 mi n of Ritchvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CAS-BOT-BC106322  Brickellia californica A. A. Heller 1923-8-14 13810 Butte Occasional in sand and gravel along Chico Creek at the Hooker Oak swimming pool. Comment
  CHSC41920  Brickellia greenei Lowell Ahart 1983-8-16 4281 Butte Along Humboldt Road, Butte Meadows. About 3 miles southwest of Butte Meadows. 1450 Comment
  SEINET10507327  Briza maxima Mary Susan Taylor 1980-5-24 Taylor 2745 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3921417  Briza minor Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 229 Butte Off hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 Comment
  CAS-BOT-BC482211  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  CHSC88078  Brodiaea californica var. californica R. D. Fischer 2004-6-6 163 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). At stream crossing on Big Chico Creek, 300 ft n. of gated property line of Bidwell Park. Off of Chico Canyon Road (name on older maps), e. side of creek. 213 Comment
  UC768722  Brodiaea californica var. californica R. F. Hoover 1936-5-21 1172 Butte 3 mi n Cana Comment
  CHSC29094  Brodiaea minor M. S. Taylor; J. D. Jokerst 1980-5-15 2620 Butte Ca. 1/2 mi e of Cohasset Rd, ca. 3 mi n of Chico. 91 Comment
  JEPS122027  Brodiaea minor Lowell Ahart 2014-7-2 19552 Butte About 120 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. Comment
  UCD77176  Brodiaea minor Robert E. Preston 2002-6-28 1893 Butte Forbestown. 832 Comment
  CAS-BOT-BC484558  Brodiaea minor John Thomas Howell 1967-6-22 42607 Butte Magalia 701 Comment
  CAS-BOT-BC484559  Brodiaea minor John Thomas Howell 1962-6-15 37456 Butte Magalia 731 Comment
  UC501524  Brodiaea minor Frank W. Peirson 1926-6-21 6767 Butte Humboldt Road Butte Meadows Comment
  SEINET3885151  Brodiaea multiflora D. W. McNeal, Todd McIntyre 1989-4-18 3368 Butte Along the rd. bank beside Hwy. #70. 4.5 mi. s. of the jct. of Hwy #162 in Oroville.; 0 Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  CAS-BOT-BC27869  Brodiaea purdyi Carlton Elmer Purdy 1896-1-1 s.n. Butte Hills back of Chico Comment
  JEPS103478  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the S side of Central House Road, ca 80 yards E of the bridge across Whyman Ravine, ca 1/4 mile E of Highway 70, ca 12 miles SW of Oroville. 27 Comment
  CAS-BOT-BC149546  Bromus carinatus var. carinatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  JEPS110192  Bromus carinatus var. carinatus Lowell Ahart 2006-7-16 12976 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
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CHSC49515  Bromus carinatus var. marginatus Vernon Oswald; Lowell Ahart 1987-7-1 3088 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connection Humboldt and Humbug Rds,ca. 2.5 mi ene of Jonesville. 1780 Comment
  JEPS118468  Bromus catharticus Lowell Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs 29 Comment
  CAS-BOT-BC155943  Bromus commutatus Lowell Ahart 1983-6-26 4143 Butte Sierra Nevada. Along Ponderosa Way, ca. 0.5 mile south of the East Fork of Canyon Creek, ca. 13.5 miles northeast of Oroville. 550 Comment
  CHSC71210  Bromus commutatus Lowell Ahart 1998-6-30 8015 Butte Southeast margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC156028  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC156029  Bromus diandrus H. E. Brown 1897-4-15 199 Butte Near Clear Creek. 53 Comment
  CHSC109606  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC11332  Bromus hordeaceus Lowell Ahart 1971-4-25 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10565911  Bromus japonicus Lowell Ahart, John Dittes; Josephine Guardino; Steve Green 2003-5-27 Ahart 10222 Butte T22N R2E, section not surveyed. Normal size plants, on damp dark soil, springy area 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 3.5 miles east of Manzanita Avenue, Chico. Common, inconspicuous. Foothill Woodland. 122 Comment
  CAS-BOT-BC162456  Bromus laevipes John Thomas Howell 1962-6-15 37514 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC100992  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC47607  Bromus madritensis subsp. madritensis Lowell Ahart 1972-4-18 85 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC39774  Bromus madritensis subsp. rubens B. Wilson 1968-3-15 94 Butte 100 yds. n of n Chico Airport entrance on Cohasset Rd. 2 mi ne of Chico. E edge of Rd., Chico. 59 Comment
  SEINET6778931  Bromus mollis CSUC 1980-7-15 Butte Chico, Meridian road Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  JEPS106317  Bromus orcuttianus Lowell Ahart 2004-6-22 11123 Butte On the east side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  UCD59073  Bromus orcuttianus H. F. Copeland 1930-7-21 s.n. Butte Jonesville. By Butte Creek. 1524 Comment
  CHSC49516  Bromus racemosus Vernon Oswald 1988-5-18 3318 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. On the edge of the road. 426 Comment
  CHSC79877  Bromus sterilis G. F. Hrusa; T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada. SE-facing slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39deg 51' N; 121deg 34' W']. 725 Comment
  JEPS87479  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte at Camp 18 Camp 18 1158 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
  CDA13291  Bromus suksdorfii G. F. Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC84110  Bromus tectorum Lowell Ahart 2003-5-9 10120 Butte In an alfalfa field, on the south side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. 24 Comment
  UC726398  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte near Stirling (Feather River); Feather River 975 Comment
  JEPS94764  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  JEPS98571  Bulbostylis capillaris Lowell Ahart 2000-6-6 8455 Butte 5 mi(air)E of Oroville Dam (in tire ruts, bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  SEINET4169756  Calliprora scabra A. A. Heller 1919-5-18 13167 A Butte Stirling , in fine gravel 1074 Comment
  CHSC54362  Callitriche heterophylla M. Bailey 1991-4-17 563 Butte E side of Pentz-Magalia Road, ca 0.2 mi n of its jct with Hwy 70. Roadside ditch. 152 Comment
  CHSC103992  Callitriche marginata Lowell Ahart 2010-5-14 16651 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CAS-BOT-BC80358  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  UC3356  Calochortus albus Carl Purdy 1821-1 Butte near Ukiah; Oroville Comment
  CHSC49691  Calochortus leichtlinii Vernon H. Oswald 1983-8-17 983 Butte Humboldt Summit, ca 3 mi ne of Jonesville. Comment
  CAS-BOT-BC489973  Calochortus leichtlinii C. C., Mrs. Bruce 1897-7-1 s.n. Butte Mountains Comment
  CHSC34488  Calochortus luteus J. D. Jokerst 1979-5-21 252 Butte NE corner of jct Pentz-Magalia Hwy and Pentz Rd. Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  CAS-BOT-BC491862  Calochortus luteus Lewis S. Rose 1945-5-12 45047 Butte Richardsons Springs 304 Comment
  CAS-BOT-BC491864  Calochortus luteus Lowell Ahart 1980-5-4 2187 Butte Thermalito, Valley grassland Comment
  SD6511  Calochortus luteus Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  CAS-BOT-BC492565  Calochortus minimus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  CHSC32118  Calochortus monophyllus L. Ahart 1970-4-5 42 Butte Along Robinson Mill Rd. 457 Comment
  SEINET12048530  Calochortus monophyllus L. J. Newsum 1984-1 16 Butte Bidwell Heights Rd, 200 ft from jct with Hwy 32, 7 mi E of Chico 457 Comment
  CHSC116973  Calochortus tolmiei Danielle Gee 2013-4-27 Butte Detlow Road, about 20 yards off Hwy 70, along road cut. 642 Comment
  CHSC57550  Calochortus tolmiei Gail Bufton 1990-4-24 23 Butte Ca. 0.7 mi ne of intersection of Coutolenc Rd. and Skyway. Ca. 16 mi ne of Chico. 701 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
  SFV10354  Calycadenia multiglandulosa M. L. Vincent 1963-6-6 374 Butte In mountain meadow, 1 mile west from Nelson Bar Road at stream. Comment
  UCD129745  Calycadenia multiglandulosa Gerald D. Carr 1981-9-26 1161 Butte around 3 miles northeast of Honcut, on the Lowell Ahart Ranch. Comment
  SEINET10474497  Calycadenia multiglandulosa subsp. bicolor Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4687 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC106080  Calycadenia oppositifolia Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC106085  Calycadenia oppositifolia R. L. Carr 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), ca. 5.6 mi NE of Manzanita Ave. 244 Comment
  CAS-BOT-BC106121  Calycadenia oppositifolia Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise, in an open area about 1/4 mi N of Kunckle Res. 500 Comment
  CDA10576  Calycadenia oppositifolia J. Glazner, D. Zippin 1999-6-15 s.n. Butte Sierra Nevada; Upper reach of Nance Canyon, 3/8 mile south-southeast of Skyway Boulevard under transmission line. Comment
  CHSC44955  Calycadenia oppositifolia Pauleen Broyles 1988-4-19 1107 Butte Lower Nance Canyon. 90 Comment
  CHSC62711  Calycadenia oppositifolia L. P. Janeway 1993-5-30 4363 Butte Above Ponderosa Way, 1.3 mi northeast of Coutolenc Road; ca 1.3 mi north-northeast of Magalia. 563 Comment
  CHSC75901  Calycadenia oppositifolia G. F. Hrusa; T. D. Wilfred 1997-7-3 13989 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 725 Comment
  CHSC78118  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  POM284479  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Type collected 'near Chico, May 30, 1882, by Dr. C.C. Perry.' Along the Richardson Springs road 3 miles north of Chico Comment
  SEINET10473678  Calycadenia oppositifolia Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4086 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  JEPS104278  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, ca 2 mi n and 1 3/8 mi e of Honcut, ca 12 mi se of Oroville. 42 Comment
  CAS-BOT-BC270883  Calycadenia spicata Lowell Ahart 1980-7-4 2447 Butte Thermalito 65 Comment
  CHSC43200  Calycadenia truncata Robert Banchero 1981-6-29 548 Butte Ca 2.2 air mi W of Pulga. Comment
  UCD170555  Calycanthus occidentalis D. O. Burge 2017-8-16 2283 Butte Butte Creek. 220 Comment
  CDA13318  Calyptridium monospermum G. F. Hrusa, T. D. Wilfred 1996-7-9 13164 Butte Sierra Nevada; USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  UCD100460  Calyptridium umbellatum T. I. Storer 1961-6-6 s.n. Butte State Highway 32, 23 miles east of Chico. Comment
  CHSC33652  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3167 Butte N of Magalia and NE of De Sabla, just NE of junction of Skyway and Humbug/Humboldt Roads. 853 Comment
  CHSC33653  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3681 Butte Along Hwy 32, 0.2 mi N of main intersection of Forest Ranch. Comment
  CHSC95113  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  HSC96804  Calystegia atriplicifolia subsp. buttensis L. Ahart 2006-6-24 12858 Butte W side of Ponderosa Way going NW on Cohasset Ridge about 3.75 mi. NE of Cohasset 1128 Comment
  POM71019  Calystegia occidentalis subsp. occidentalis C. C. Bruce 1897-05 2039 Butte Little Chico. Comment
  UC600773  Calystegia occidentalis var. tomentella H. F. Copeland 1930-7-18 Butte Jonesville Comment
  POM38436  Camissonia graciliflora C. C. Bruce 1897-05 1957 Butte Near Chico. Comment
  JEPS94294  Campanula prenanthoides Lowell Ahart 1997-8-1 7793 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on w side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  POM59345  Campanula prenanthoides Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10463084  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte ON RD FROM PRATTVILLE TO CHICO NEAR CHICO Comment
  UC177576  Campanula scouleri H. M. Hall 1914-7-1 9798 Butte near Butte Meadows (Sierra Nevada Mountains); Sierra Nevada Mountains 1280 Comment
  CHSC11084  Capsella bursa-pastoris Lowell Ahart 1965-3-10 Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC38045  Capsella bursa-pastoris R. E. Preston 1983-1-9 375 Butte In a field, w side of Aguas-Frias Rd, ca. 200 yds s of Butte Creek; ca. 13.5 mi s of Chico. 28 Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  JEPS116041  Cardamine oligosperma Lowell Ahart, John Dittes 2009-3-20 15505 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  JEPS119892  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC113410  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  RSA0119040  Carex angustata Lowell Ahart 2014-7-7 19579 Butte Small snow lake, north of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1691 Comment
  SD470  Carex angustata E. B. Copeland 1930-8-10 Butte Jonesville; marshy meadow. 456 Comment
  UC478555  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the Lily Pond 1700 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC104847  Carex bolanderi Lowell Ahart 2010-6-12 16796 Butte Along the north side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  CHSC54113  Carex bolanderi Vernon H. Oswald; Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). On the edge of Palermo Canal. 170 Comment
  JEPS114825  Carex bolanderi Lowell Ahart 2008-6-2 14806 Butte 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
  CHSC52847  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3145 Butte SW-facing slope above Coon Hollow; along dirt road 0.8 mi NE of the creek. 1783 Comment
  JEPS108149  Carex brainerdii L. P. Janeway 2005-5-29 8406 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top 1317 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  CHSC44034  Carex capitata S. C. Morey 1983-7-23 572 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC71402  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte On the north side of the dirt road, about 1/2 mile northwest of the Lost Creek Reservoir, about 3/4 mile northwest of the Lost Creek Dam. 1021 Comment
  CHSC82908  Carex cyrtostachya L. P. Janeway; B. Castro 2002-7-28 7689 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
  CHSC43950  Carex densa Vernon Oswald 1988-5-19 3322 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  SEINET8027659 Image available Carex densa L. Janeway, Gog, L 2008-1 3183 (A & B) Butte Bidwell Park. Comment
  SEINET12649362 Image available Carex divulsa Lowell Ahart 2012-1 17948 . Butte 64 Comment
  JEPS102953  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  SEINET8990670 Image available Carex gracilior Unknown 2009-1 15911 Butte 60 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut,about 12 miles southeast of Oroville. Comment
  CHSC63289  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte In a small dry mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC52869  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3031 Butte Large mdw at head'waters' of Willow Cr. 1935 Comment
  SEINET4286076  Carex integra Unknown 2009-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET4231762 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC51505  Carex laeviculmis Lowell Ahart; Vernon Oswald 1990-8-14 6576 a Butte In a small pond, along a small branch of French Creek, on the north side of Forest Rd 21N16, ca. 0.75 miles west of the north end of Sly Creek Reservoir. 1219 Comment
  CHSC44997  Carex lemmonii S. C. Morey 1983-8-4 704 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS87493  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte about 1/4 mi w Lost Creek Reservoir (on the s side of the dirt road) 1036 Comment
  UCR246363  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Northern Sierra Nevada Highlands (n SNH), Moreville Ridge Road [Forest Road 20N03 ], 0.4 road miles N of dam on Lost Creek Reservoir 1025 Comment
  SEINET7899367 Image available Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville Comment
  CHSC51506  Carex lenticularis var. impressa L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2491 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  SEINET12649537 Image available Carex leporinella Lowell Ahart 2010-1 17218 Butte 1918 Comment
  JEPS120096  Carex leptopoda Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC83295  Carex luzulina L. P. Janeway; B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC113413  Carex mariposana Lowell Ahart 2014-7-7 19575 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CAS-BOT-BC32158  Carex multicaulis L. P. Janeway; Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 2493 Butte Butte Meadows quad. Near Humbug summit Rd ca 5.5 mi N of Inskip, 1539 Comment
  CHSC42369  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC45061  Carex multicostata Vernon Oswald 1988-6-30 3548 Butte At the end of a spur road on the w side of Humbug Rd. between Cold Springs and the summit. 1975 Comment
  CHSC52261  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1854 Butte Along Humbug Road at Cold Springs (vicinity of Humbug Summit). Small meadow around watering trough. 1965 Comment
  CHSC44125  Carex nervina V. Oswald; L. Ahart 1988-7-26 3623 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 2026 Comment
  HSC87281  Carex nervina L. P. Janeway, Robert A. Schlising 1988-7-16 3012 Butte Along Willow Creek, 1 mi. W of Humbug Rd. 1799 Comment
  CHSC61220  Carex nudata Lowell Ahart 1993-4-8 6931 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  JEPS104628  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  UC1108043  Carex preslii H. F. Copeland 1932-7-24 Butte Rim of south wall of Butte Creek drainage Comment
  CAS-BOT-BC116735  Carex subfusca Herbert Faulkner Copeland 1932-7-14 s.n. Butte Jonesville, along ditches and in damp places. Comment
  CHSC52878  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3143 Butte Southwest facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  UC202968  Carex subfusca H. M. Hall 1914-7-25 9781 Butte Jonesville Sierra Nevada Mts. (n Butte Co.); Jonesville, northern Butte Co., Sierra Nevada Mts. 1554 Comment
  UC406290  Carex subfusca E. B. Copeland 1929-7-20 51 Butte Jones Creek Jonesville 1500 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  CDA42898  Carex texensis L. Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  CHSC115737  Carex xerophila P. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road, northern Sierra Nevada Highlands. 720 Comment
  UCD168844  Carex xerophila Peter. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands (n SNH). Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. 720 Comment
  CHSC12164  Castilleja J. Grove 1973-4-24 77 Butte Collected 1 mi W of Paradise. 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
  CHSC115360  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte Steep east road cut, along Oregon Gluch Road, about one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  CHSC77494  Castilleja affinis subsp. affinis Tim Stofer 1997-4-12 9 Butte Located on the east side of trail. 1/4 mi. from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 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-BC249586  Castilleja applegatei subsp. pinetorum Helen M. Edwards 1916-6-1 s.n. Butte De Sabla 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
  CHSC93993  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 765 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 found on slope above creek, west side, downstream of pond. 1371 Comment
  JEPS124026  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte About 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. Comment
  JEPS60470  Castilleja applegatei subsp. pinetorum T. I. Chuang and L. Constance 1969-7-2 6709 Butte 8.6 mi sw Arch Rock Tunnel (on Highway 70) Comment
  RSA769603  Castilleja applegatei subsp. pinetorum L. Ahart 2009-4-22 15594 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
  SEINET10865280  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-5-6 Taylor 1583 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  UC492740  Castilleja arachnoidea H. F. Copeland 1932-8-19 Butte ridge se head of Butte Creek; Jonesville 2100 Comment
  CHSC83922  Castilleja attenuata Lowell Ahart 2003-4-10 10057 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
  CHSC1828  Castilleja exserta E. Canfield 1904-4-23 Butte 76 Comment
  CHSC90144  Castilleja exserta M. P. Howe 1984-4-1 11 Butte Salmon Hole, upper Bidwell Park. 182 Comment
  CHSC5952  Catalpa speciosa M. MacArthur 1968-6-17 198 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  SEINET12210610  Ceanothus cuneatus B. R. Parker 1976-1 2 Butte 1.5 mi NE of Oroville on SE side of Glen Drive. Chaparral-Oak woodland ecotone 111 Comment
  SEINET12210971  Ceanothus cuneatus M. P. Howe 1984-1 12 Butte Doe Mill Summit 579 Comment
  SBBG121216  Ceanothus diversifolius L. Ahart 2007-7-10 14283 Butte N side of USFS Rd 21N31Y, ca. 0.6 mi W of Bald Rock Rd, ca 17 mi NE of Oroville 1032 Comment
  JEPS108797  Ceanothus integerrimus Lowell Ahart 2006-6-24 12860 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1128 Comment
  LA43611  Ceanothus integerrimus Carl B. Wolf; 1937-5-18 8726 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  RSA755641  Ceanothus integerrimus L. Ahart 2009-5-15 15693 A Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  SEINET267155  Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-6-17 1620 Butte Pence Road south of Paradise. 395 Comment
  UCR270299  Ceanothus integerrimus John F. Emmel 2003-8-2 1806 Butte Sierra Nevada Mountains, Lassen National Forest, Cherry Hill Campground, on Humboldt Road WSW of Jonesville 1438 Comment
  SEINET12210970  Ceanothus integerrimus Unknown 1981-1 14 Butte ca 14 mi E of Chico, 6 mi E of Butte Creek (Covered Bridge) on Honey Run Road, 25 ft from rd. side 168 Comment
  POM305568  Ceanothus integerrimus var. puberulus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 852 Butte Feather River Hwy. Comment
  RSA21542  Ceanothus integerrimus var. puberulus Carl B. Wolf 1937-5-18 8728 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CHSC31411  Ceanothus lemmonii Debra Dockrey 1980-4-21 4 Butte Ca 10 mi n of Chico. 426 Comment
  SEINET10493646  Ceanothus lemmonii Heidi H. Schmidt 1993-6-15 Schmidt 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CHSC3578  Ceanothus prostratus Judy Lee Potter 1966-2-26 Butte 5 miles north Paradise (Magalia area). Comment
  CDA42420  Ceanothus prostratus subsp. prostratus D. G. Kelch 2012-9-19 12 .368 Butte Forest Ranch. Garland Rd. 150 m E of Hwy 32 near forestry camp. Comment
  SBBG17268  Ceanothus prostratus var. prostratus M. Vincent 1962-4-15 177 Butte Skyway, 0.5 mi N of Magalia beside the Magalia reservoir Comment
  CHSC3015  Cedrus deodara Carl Pejsa 1958-4-19 137 Butte Bidwell Park Forestry Station. Comment
  UC179660  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte hills 8 mi n Oroville Comment
  CDA31996  Centaurea melitensis L. Ahart 2008-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, 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 Comment
  SEINET10474154  Centaurea melitensis Mary Susan Taylor 1981-3-24 Taylor 3447 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
  RSA755414  Centaurea solstitialis L. Ahart 2009-6-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  JEPS115189  Centaurium muehlenbergii Lowell Ahart 2009-6-19 15943 Butte On dry soil, north of a trail to pond and table, on the east side 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 232 Comment
  JEPS13269  Centaurium muehlenbergii Rimo Bacigalupi with G. T. Robbins 1955-7-15 5302 Butte about 2 mi above Hooker Oak (along dirt road leading up Big Chico Creek Canyon) 106 Comment
  CHSC116729  Centaurium tenuiflorum Lowell Ahart 2016-5-25 20879 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road. about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  SEINET10454837  Centaurium venustum subsp. abramsii Mary Susan Taylor 1980-6-14 Taylor 2874 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC288535  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte Near Pentz Comment
  CAS-BOT-BC288530  Centromadia fitchii Rimo Bacigalupi; G. T. Robbins 1955-7-15 5301 Butte 3.5 miles E of Chico and 0.5 mile S of the Hooker Oak 80 Comment
  CHSC48165  Centromadia pungens subsp. septentrionalis Vernon Oswald 1983-6-28 785 Butte Graylodge Waterfowl Management Area in Parking Lot 17. Comment
  CHSC4408  Cephalanthera austiniae R. L. Smith 1966-5-28 6 Butte 3 mi nw of De Sabla. Comment
  CHSC10568  Cephalanthus occidentalis var. californicus Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65777  Cerastium glomeratum Vernon H. Oswald 1996-3-22 7257 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  JEPS117150  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  POM28570  Cercis occidentalis C. C. Bruce 1897-05 1815 Butte Little Chico. Comment
  SEINET10452399  Cercis occidentalis Mary Susan Taylor 1975-4-25 Taylor 502 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. 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
  JEPS115231  Cercocarpus betuloides var. betuloides Lowell Ahart, John Dittes 2009-3-20 15518 Butte On the south side of the Guardian Rock Trail, about 100 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of C 407 Comment
  CHSC3617  Chamaecyparis lawsoniana John Francis 1966-2-17 16 Butte Campus, Chico State College, Chico. Comment
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Jul 25 2018
  CDA29968  Chamaesyce maculata L. Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville Comment
  CDA32012  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC177570  Chamaesyce maculata H. M. Hall 1914-8-2 9835 Butte near Marysville 22 Comment
  CHSC11914  Chamaesyce serpillifolia subsp. serpillifolia E. B. Copeland 1929-7-29 380 Butte Above Jonesville. 1750 Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  SEINET10529956  Cheilanthes carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1927 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CAS-BOT-BC69448  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  CHSC23659  Cheilanthes gracillima M. S. Taylor 1976-4-24 1069 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  UC1191352  Chenopodium ambrosioides Herbert L. Mason and Verne Grant 1946-8-14 13026 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  SEINET10904479  Chenopodium ambrosioides Mary Susan Taylor 1979-10-13 Taylor 2248 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
  JEPS95916  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1999-8-22 8183 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  JEPS115185  Chenopodium botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SEINET9340404  Chenopodium desiccatum Unknown 2007-10-7 13065 Butte Northern Sacramento Valley Comment
  CDA13278  Chimaphila umbellata G. F. Hrusa, T. D. Wilfred 1996-7-9 13126 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UCD117414  Chimaphila umbellata Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CDA38838  Chimaphila umbellata Vernon H. Oswald & Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  CHSC40084  Chlorogalum angustifolium R. M. Austin 1896-5-1 737 Butte Comment
  CAS-BOT-BC498627  Chlorogalum angustifolium H. M. Hall 1917-5-13 10302 Butte Plains west of Pennington Comment
  JEPS104224  Chondrilla juncea Lowell Ahart 2003-6-30 10331 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) n of Forbestown. 481 Comment
  CHSC39074  Chorizanthe polygonoides var. polygonoides R. A. Schlising 1980-4-6 3545 Butte E of Chico along Skyway, 3.5 mi S of Paradise. 213 Comment
  CHSC103960  Chorizanthe stellulata Lowell Ahart 2010-5-23 16735 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  CHSC27572  Cicendia quadrangularis Robert Schlising 1978-4-18 3221 Butte Ca 2 mi S Tehama County line, at jct Broyles Road and Hwy 99; vernal pool. Comment
  CHSC26652  Cichorium intybus M. S. Taylor 1977-11-10 1528 Butte Ca. 1 mi E of jct of Nelson West Rd and Chico-Butte Hwy, on N side of Nelson West Rd, ca. 23 mi S of Chico. 30 Comment
  CHSC31622  Cichorium intybus L. Ahart 1977-7-4 1466 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC11784  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  UC600733  Cirsium andersonii H. F. Copeland 1930-8-26 Butte Jonesville Comment
  CHSC87552  Clarkia arcuata R. D. Fischer 2004-4-13 65 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near the middle portion of the Humboldt Trail. 426 Comment
  CHSC96800  Clarkia concinna subsp. concinna Lowell Ahart 2007-5-22 13913 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC1103  Clarkia gracilis subsp. albicaulis R. Carter 1964-6-15 125 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC27341  Clarkia gracilis subsp. albicaulis T. B. Devine 1977-6-5 413 Butte Humbug Road, 2.2 mi ne of Centerville. 457 Comment
  HSC97020  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte Northern Sierra Nevada, 4-5 air mi. N of Paradise and W of upper Paradise Pines, 1.4 mi. W of Jct. of Nimshew Rd. and Centerville Rd. 620 Comment
  SFV10925  Clarkia mildrediae M. L. Vincent 1968-6-10 848 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  HSC95510  Clarkia mildrediae L. Ahart 1997-7-11 7743 Butte Southeast of Cold Creek, 2 air mi. southwest of Bald Mountain, ~ 9 mi. by road from Stirling City, or ~ 2 air mi. northeast of Stirling City 1220 Comment
  SEINET10841116  Clarkia mildrediae Mary Susan Taylor 1978-7-21 Taylor 1804 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
  CHSC71151  Clarkia mildrediae subsp. lutescens L. P. Janeway 1994-7-7 4684 Butte South side of ridge between Haphazard, Baker, and Foreman Creeks; 3.7 road mi west of Oroville-Quincy hwy and Rogers Cow Camp via Roads 23N15, 22N66X, and 22N40X. Southwest-facing road cutbank and above. 1158 Comment
  CHSC37426  Clarkia mosquinii R. A. Schlising; K. Tarp, R. Banchero 1981-7-11 4134 A Butte NE of Oroville; N of the French Creek Road crossing of Peavine Creek. Roadside. 647 Comment
  CHSC64117  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road. South-facing road cutbank at curve of the road. 853 Comment
  CHSC74102  Clarkia mosquinii B. Castro; L. Gehrung 1998-8-19 822 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, 100-300 ft W of Oro-Quincy Hwy on SE-facing side of SW-trending ridge E of Get-Up-and-Get Creek. 1210 Comment
  CHSC82715  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area. 509 Comment
  UC1730254  Clarkia mosquinii L. P. Janeway and Perrie Cobb 1993-7-6 4430 Butte 1.8 mi E-NE of Bald Rock Dome (Watson Ridge, southwestern end, 0.7 mi NW of Fall River) 1097 Comment
  UCD80465  Clarkia purpurea CNPS SN Foothill Team 2005-4-13 SNFN 0078 d Butte City of Chico, Doe Mill Meadowfoam Preserve, at the east end of Warfield Street, ca. 85 m south of the Preserve gate entrance. 82 Comment
  CHSC10819  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37425  Clarkia purpurea subsp. quadrivulnera R. A. Schlising; K. Tarp 1982-7-28 4360 Butte NE of Oroville and NW of Mountain House; along French Creek; in meadow. 609 Comment
  UC246743  Clarkia purpurea subsp. quadrivulnera H. E. Brown Apr 15 1897-Apr 30 1897 212 Butte near Clear Creek 53 Comment
  CHSC30066  Clarkia rhomboidea R. A. Schlising 1980-5-26 3601 Butte Several mi sw village of Cohasset, along fire road e of Cohasset Road. 411 Comment
  CHSC36811  Clarkia rhomboidea L. Ahart 1982-6-15 3581 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC60837  Clarkia rhomboidea Vernon H. Oswald; Lowell Ahart 1993-6-22 5554 Butte Powellton Rd., 2.1 mi N of Doe Mill Rd. (Ponderosa Way), N of De Sabla. 963 Comment
  CHSC70751  Clarkia rhomboidea L. P. Janeway 1993-6-23 4402 Butte Along Road 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CHSC81385  Clarkia rhomboidea Samantha Hillaire 2001-5-16 302 Butte Vicinity of Ponderosa Way, about 0.3 mi southeast of Big Chico Creek; UTM 10 611784E 4415729N. On a steep roadcut of a little-used dirt road, on a SW exposure. 353 Comment
  RSA108407  Clarkia rhomboidea Harlan Lewis, M. Lewis 1947-6-11 398 Butte On Magalia to Stirling City Road, 1.4 mile from Magalia School Comment
  UC478495  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville 1650 Comment
  SD122552  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Rd, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville; Foothill Woodland; 449 Comment
  POM38549  Clarkia unguiculata C. C. Bruce 1897-06 1854 Butte Little Chico. Comment
  SEINET516348  Claytonia exigua subsp. exigua Lowell Ahart 1985-1 4859 Butte Growing on damp bare broken disturbed serpentine W of Lunt Rd., about 1/2 mi. N of the intersection of Lunt Rd. and Hwy. 70. 518 Comment
  CHSC43719  Claytonia palustris Vernon Oswald 1983-6-22 738 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  CHSC98377  Claytonia palustris Dean Wm. Taylor; Tom Engstrom 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road, growing in moist bed of stream draining the site ca. 150 ft downslope to the SE of the road. 1524 Comment
  POM219309  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jonesville; by Jones Creek. 1524 Comment
  SEINET10572706  Claytonia parviflora Mary Susan Taylor 1981-5-15 Taylor 3745 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  SEINET11931070  Claytonia perfoliata Unknown 1978-1 11 Butte ca 20 yds N of the Skyway, 3.7 mi E of jct of Hwy 99 and the Skyway, 6.7 mi SE of Chico 207 Comment
  CHSC34943  Claytonia perfoliata subsp. perfoliata W. A. Vaccaro 1976-4-17 2 Butte Pop. scattered N side of Humbug Rd., ca. 2 mi. E of Centerville. 129 Comment
  CHSC42078  Claytonia perfoliata subsp. perfoliata Kim McKirahan 1986-4-11 9 Butte Wurlitzer Addition to Vina Plains Preserve. Pine Creek. 56 Comment
  CHSC33589  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-28 3564 Butte N side of rd 23N28.2 in loop of 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
  CHSC109133  Clematis lasiantha Lowell Ahart 2012-3-23 17776 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  UC1876148  Clematis lasiantha T. A. Ranker and P. G. Trapp 1994-6-17 1613 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  UC83304  Cleome platycarpa Mrs. R. M. Austin Jun 1887 Butte Comment
  JEPS88526  Clintonia uniflora Lowell Ahart 1996-6-5 7680 Butte about 7 air mi e of Feather Falls (about 1 mi n of Golden Trout Crossing, e of bridge across South Fork of the Feather River); South Fork Feather River 914 Comment
  CHSC11076  Collinsia heterophylla Lowell Ahart 1961-5-4 Butte Along Humbug Road, Chico. 152 Comment
  SD4528  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville, damp spot under brush 1650 Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  POM252814  Collinsia sparsiflora var. bruceae A. A. Heller 1938-4-23 15053 Butte On Highway #24 near the summit above the junction with the Yankee Hill road. 610 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
  CHSC33591  Collinsia tinctoria M. S. Taylor 1981-6-19 3959 Butte N side of Feather River Hwy 70, at nw end of Pulga ridge and along Pulga Rd. ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  CHSC82509  Collinsia tinctoria Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9732 Butte On a road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  SD147485  Collinsia tinctoria Lowell Ahart 1980-6-19 2383 Butte Along Swedes Flat Road, near Bangor 320 Comment
  UC1012162  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25684 Butte above Oroville (in Lassen National Forest, along Feather River, Route 24); Lassen National Forest, Feather River 548 Comment
  CHSC48985  Collinsia torreyi var. wrightii Vernon Oswald 1984-7-2 1338 Butte Humbug Summit. 2320 Comment
  CHSC34597  Collomia heterophylla R. A. Schlising; P. Broyles 1979-5-15 3405 Butte NW of Concow Reservoir at Griffin Gulch. Roadside. 640 Comment
  SD3880  Collomia linearis E. B. Copeland Butte 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
  CHSC94493  Collomia tinctoria Lowell Ahart 2006-8-15 13190 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC180252  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  CAS-BOT-BC180254  Comandra umbellata subsp. californica Mrs. J. H. Morrison 1939-5-1 s.n. Butte Durham Comment
  RSA31755  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia. Comment
  SEINET10898570  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 Ahart 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  POM66159  Convolvulus arvensis Helen M. Edwards 1917-06 s.n. Butte De Sabla Comment
  CHSC2334  Corallorhiza striata R. Carter 1964-6-12 117 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown Rd. 914 Comment
  CHSC48986  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1983-8-17 977 Butte Humbolt Rd., 2.1 mi ne of Lomo. 1383 Comment
  CHSC31087  Cornus nuttallii Herb Allan McLane 1980-4-25 21 Butte 20 ft. n of Ponderosa Way, Plumas National Forest. 670 Comment
  POM77773  Cornus nuttallii C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  UC482954  Cornus nuttallii H. F. Copeland 1932-7-18 Butte near West Branch Comment
  UC426924  Cornus sericea subsp. sericea E. B. Copeland 1930-6-23 431 Butte Jonesville 1500 Comment
  UC775193  Cornus sessilis Herbert L. Mason 1940-5-22 12311 Butte Humboldt Rd. ca. 10 mi. above Chico Comment
  UCD169427  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte About 4 miles (air) northeast of Cohasset, on Cohasset Ridge, a gated road goes southeast, on the east side of the dirt road (Ponderosa Way), south of an intersection. 1113 Comment
  SD1899  Corydalis caseana E. B. Copeland 1929-7-3 Butte Comment
  CHSC97413  Cotula australis Robert Fischer 2006-6-18 1032 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  UC1562410  Cotula australis Lowell Ahart 1990-5-28 6498 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  CHSC309  Cotula coronopifolia V. Holt 1936-3-30 Butte Near Cherokee. 396 Comment
  CHSC45001  Cotula coronopifolia Lowell Ahart 1979-5-20 1886 Butte Man made pond, west of the Western Pacific Railroad, about 2 miles south of Palermo. 33 Comment
  CHSC112911  Crassula aquatica B. Castro; Robin Carter 2011-4-29 1870 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
  CHSC33256  Crassula aquatica R. A. Schlising 1980-3-23 3524 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC65991  Crassula aquatica Vernon H. Oswald 1996-4-20 7405 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W end of the S paddock of Tract 7, Sanctuary II. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  CHSC90952  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC111390  Crassula tillaea Lowell Ahart 2012-5-2 17980 Butte On the north side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CAS-BOT-BC427953  Crassula tillaea L. P. Janeway 1993-5-2 4342 Butte Roadside of Yankee Hill Road at Hwy 70, across Hwy 70 from Serpentine Point. 487 Comment
  CHSC62453  Croton setiger L. P. Janeway 1993-9-7 4584 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  SBBG19380  Croton setiger H. F. Copeland 1937-7-30 1604 Butte foothills, near Oroville Comment
  JEPS98582  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC72254  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte On the bottom of a vernal pool, about 3/4 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  SEINET10507674  Crypsis schoenoides Lowell Ahart 1990-9-30 Ahart 6603 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC36534  Crypsis vaginiflora L. Ahart 1982-7-10 3673 Butte On bottom of dry pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS122249  Crypsis vaginiflora Lowell Ahart 2014-9-23 19875 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
  CHSC11864  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  CHSC29959  Cryptantha affinis R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3783 Butte NW part of county, 0.6 mi N of jct Hwy 32 with Humboldt Road, along latter. 1219 Comment
  CHSC47979  Cryptantha affinis Vernon Oswald; Lowell Ahart 1987-7-1 3056 Butte Scotts John Creek. Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1828 Comment
  RSA4225  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  SEINET12329559  Cryptantha flaccida Unknown 1984-1 4668 Butte at the Ponderosa Dam, ca 2 mi NW of Forbestown, Yellow Pine Forest 370 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
  UCD119835  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte along the dirt road near the water tower, above the generator, 1 mile east of Ponderosa Dam, 2 miles north of Forbestown. 475 Comment
  UCD133542  Cupressus macnabiana B. F. Smith 1970-10-9 99 Butte 3.3 miles north of Jarbo Gap, Lassen National Forest. 883 Comment
  SEINET10966022  Cupressus macnabiana Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5395 Butte T23N R4E sw/sw sec 30, Paradise quad. On serpentine outcrop, at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise. 1220 ft elev. 372 Comment
  SEINET11739356  Cupressus macnabiana M. S. Taylor, Oswald, V. 1984-1 5395 Butte jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise 372 Comment
  RSA0037106  Cuscuta campestris Lowell A. Ahart 2013-11-17 19270 Butte Along the sides 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
  CHSC105271  Cuscuta howelliana Lowell Ahart 2010-6-20 16824 Butte 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
  JEPS121237  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte NW of a large wash, about 0.5 mile SE of the Honcut Cemetery, about 3.24 air miles NE of Honcut. Comment
  CHSC100108  Cuscuta subinclusa L. P. Janeway; Shandin Rudesill 2008-8-5 9534 Butte Northern High Sierra Nevada. Plumas National Forest; upper end of Magee Ridge at a small gap between Heinz Creek and Hibbard Creek; 2.7 air km north of Coyote Gap. 1353 Comment
  CHSC27581  Cuscuta subinclusa Robert Schlising 1977-8-8 3204 Butte Forest Ranch, 1,8 mi S jct Nopel Road and Highway 32 Comment
  RSA4472  Cuscuta suksdorfii var. subpedicellata E. B. Copeland 1931-7-17 676 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  CHSC47968  Cycladenia humilis var. humilis Vernon Oswald 1987-5-21 2919 Butte Skyway 2.3 mi n of Inskip. 1584 Comment
  CHSC45555  Cycloloma atriplicifolium Lowell Ahart 1981-9-26 3201 Butte Growing on a sandbar along the Sacramento River, about 6 miles west of Chico. 36 Comment
  JEPS127199  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south Oroville. Comment
  CHSC117438  Cynosurus echinatus Lowell Ahart 2016-5-30 20902 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, aabout 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  SEINET3450852  Cyperus difformis Unknown 2003-6-23 10314 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CAS-BOT-BC114734  Cyperus difformis Forman Taylor McLean 1921-3-25 15 Butte A week abundant in rice fields, Nelson. Comment
  SEINET11750563  Cyperus difformis R. A. Schlising 1979-1 3503 Butte along Sacramento River W of Chico, just N of Chico Landing Site in Bidwell River State Comment
  JEPS104074  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the w side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  JEPS94691  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 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
  SEINET9751966 Image available Cyperus eragrostis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  UC1563270  Cyperus erythrorhizos unknown 1990-10-21 6640 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  CAS-BOT-BC114377  Cyperus erythrorhizos Forman Taylor McLean 1921-9-25 11 Butte Weed on rice dykes. Wilson. Comment
  UCD141036  Cyperus erythrorhizos L. Ahart 1974-11-9 672 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC114272  Cyperus esculentus A. A. Heller 1939-8-26 15480 Butte Wet ground in a field opposite the sewer farm on the River Road west of Chico. Comment
  CHSC94781  Cyperus flavescens Lowell Ahart 2006-10-8 13429 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  JEPS95785  Cyperus flavescens Lowell Ahart 1999-8-13 8143 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET3441886  Cyperus fuscus Unknown 2000-7-23 8603 Butte Chico, Chico, about 12 air miles southwest, about 2 miles southeast of Ordbend, about 1 mile southeast of Ord Ferry, northwest of Parrott Landing, east side of the Sacramento River 30 Comment
  JEPS119912  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of Oroville Airport. Comment
  CHSC26749  Cyperus niger M. S. Taylor; M. Hayes 1977-8-16 1447 Butte Near the man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC111953  Cyperus squarrosus Lowell Ahart 2012-6-5 18161 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC113428  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC71403  Cyperus squarrosus Lowell Ahart 1998-7-18 8037 Butte On the bottom of a vernal pool, about 1/2 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 408 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
  CHSC68409  Cyperus strigosus L. P. Janeway 1986-9-20 1873 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC27962  Cystopteris fragilis M. S. Taylor 1978-7-18 1705 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte Co and Tehama Co Line. 2158 Comment
  CHSC38237  Cystopteris fragilis Vernon Oswald 1982-7-3 20 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC44603  Cystopteris fragilis Vernon Oswald; Lowell Ahart 1987-8-5 3184 Butte Rock outcrops skirtinig the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  JEPS87129  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  CAS-BOT-BC190484  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  CHSC97377  Damasonium californicum Paul Maslin 2006-4-15 43 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609366E 4410379N. 341 Comment
  UC1100156  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte 15 mi. w. Oroville; Sacramento Valley Comment
  CAS-BOT-BC189898  Danthonia californica Clarence R. Quick 1963-7-16 63 -42 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CAS-BOT-BC189899  Danthonia californica Lowell Ahart 1979-6-9 s.n. Butte 2 miles southeast of paradise. 500 Comment
  UCD60505  Danthonia californica var. americana August L. Hormay 1929-6-22 s.n. Butte Butte Meadows. Comment
  SEINET12331906  Datura inoxia Unknown 1985-1 5167 Butte Peter Ahart Ranch, about 1.5 mi N & 1 mi E of Honcut, about 12 mi S of Oroville 34 Comment
  CHSC43777  Datura stramonium var. tatula Vernon Oswald 1986-11-2 2291 Butte Upper Bidwell Park, Chico, on the n edge of Chico Creek near the end of the paved portion of Upper Park Road. 91 Comment
  CHSC13709  Datura wrightii M. S. Taylor 1974-10-11 329 Butte In field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  UCD127393  Daucus carota Jerry Smith 1972-6-21 s.n. Butte Oroville. Comment
  CHSC4033  Delphinium gracilentum Sadie Gualtieri 1967-3-6 Butte Collected: on Skyway to Paradise, 3 to 5 miles outside Chico; fields on S. side of hiway. Comment
  CHSC42720  Delphinium gracilentum Lowell Ahart 1978-4-19 1654 Butte Along the trail to Feather F alls, south of the overlook at Feather Falls, about 3 1/2 miles north of Feather Falls. 548 Comment
  CHSC46501  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC117611  Delphinium hansenii subsp. hansenii L. P. Janeway 2016-4-26 11937 Butte Sacramento Valley. Along Nelson Road 1.0 Road-km west off its bridge across Thermalito Forebay; where the road crosses Campbell Hills. 94 Comment
  POM180915  Delphinium hesperium H. F. Copeland 1923-5-6 881 Butte Near Nelson Comment
  CHSC78092  Delphinium nudicaule Caleb E. Casey 1999-3-4 Butte Upper Bidwell Park, below bluffs on south side of Bear Hole. 304 Comment
  CHSC81545  Delphinium nudicaule Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  SD1703  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville; common in the brush and open woods 1550 Comment
  CAS-BOT-BC121613  Delphinium patens subsp. patens A. A. Heller 1919-5-17 13158 Butte Banks of Feather River near Stirling 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
  CHSC94035  Delphinium patens subsp. patens R. D. Fischer 2005-4-30 717 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy, north facing slope. 518 Comment
  CHSC28157  Delphinium variegatum R. J. Goedl 1979-4-14 17 Butte Ca. 3.5 mi e of Highway 99, 20 ft n of Skyway. Field. 213 Comment
  CHSC90074  Delphinium variegatum subsp. variegatum M. A. Carlson 1991-4-12 19 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  CHSC59332  Dendromecon rigida J. L. Guardino 1992-3-23 4 Butte Paradise. 1/4 mi s of Circle Dr. terminus. 481 Comment
  CAS-BOT-BC33229  Dentaria pachystigma var. dissectifolia LeRoy Ellsworth Detling 1935-4-18 1631 Butte Magalia Comment
  SEINET10448605  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-31 Taylor 3452 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET10874447  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-16 Taylor 3415 Butte T22N R4E southcenter border sec 23. Berry Creek quad; e side of Ponderosa Way (Rim Rd), ca. 300 yds n of its jct with Hwy 70 at Jarbo Gap, ne of Oroville. Yellow Pine Forest; 2400 ft. 731 Comment
  CHSC64255  Deschampsia cespitosa S. C. Morey 1983-8-2 675 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  POM218974  Deschampsia cespitosa E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1750 Comment
  CAS-BOT-BC194307  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1920-7-24 12 Butte Meadow by Colby Creek 1828 Comment
  JEPS110321  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet 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
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  CAS-BOT-BC192656  Deschampsia danthonioides Lowell Ahart 1982-4-29 3398 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. Sw of Gridley 35 Comment
  CHSC103948  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC56628  Deschampsia danthonioides J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  SEINET10788955  Deschampsia danthonioides Roland McKee 1909-1 McKee s.n. Butte Chico. Comment
  SEINET10508566  Deschampsia danthonioides Mary Susan Taylor 1978-4-14 Taylor 1547 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC104840  Deschampsia elongata Lowell Ahart 2010-6-12 16799 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC112523  Deschampsia elongata B. Castro 2012-10-18 1990 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 bridge. 54 Comment
  CAS-BOT-BC388454  Dianthus armeria John Thomas Howell 1962-6-15 37511 Butte Magalia 731 Comment
  CHSC95063  Dianthus armeria subsp. armeria L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-13 8689 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. East sloping edge of ridge top at 'Magalia Serpentine' about 25 m east of Coutelenc Road and 240 m north of Skyway. 712 Comment
  CHSC19646  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  CHSC4594  Dicentra formosa C. Glascock 1965-6-12 434 Butte Ca. 34 mi. ne of Oroville on the Old Quincy Rd; ca. 50 yds n of road. Comment
  CAS-BOT-BC402385  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CHSC19645  Dicentra formosa subsp. formosa K. Stern 1966-4-1 Butte Chico. Comment
  CAS-BOT-BC402380  Dicentra formosa subsp. formosa Lowell Ahart 1984-6-10 4710 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC90086  Dichelostemma capitatum subsp. capitatum Ross Rowland 2001-3-28 11 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  RSA333574  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 23 Butte Along Cherokee Road, 0.5 mile N of intersection with Oregon Gulch Road, near South Table Mountain, N of Oroville. 450 Comment
  RSA333579  Dichelostemma lacuna-vernalis Craig Martz, Richard F. Sannar 1982-3-22 30 Butte East side of State Route 191 at intersection of Pentz Road. 300 Comment
  UC204578  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  CHSC44640  Dichelostemma volubile Cathy Young 1988-4-24 15 Butte Ca 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  UC765918  Dichelostemma volubile R. F. Hoover 1936-5-21 1171 Butte Cana Comment
  CAS-BOT-BC502515  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  CHSC44383  Dichondra donelliana Lowell Ahart 1988-6-7 6035 Butte On the Henry Smith Ranch, about 1/4 mile west of the Oroville Bangor Highway, about 1/2 mile north-west of Bangor. 213 Comment
  UC1037341  Digitaria sanguinalis E. Wilson 1934-9-3 71 Butte Biggs Rice Station Comment
  CHSC111111  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS119747  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38690  Diplacus grandiflorus Vernon Oswald 1983-5-23 545 Butte Upper Bidwell Park, Chico, near Chico Creek at the east end of Yahi Trail. On flood plain of creek. 207 Comment
  CHSC44771  Diplacus grandiflorus R. Banchero 1980-6-19 258 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CHSC100801  Diplacus jepsonii R. A. Schlising; L. Janeway 1988-7-1 4548 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CAS-BOT-BC153207  Diplacus kelloggii L. P. Janeway 1993-5-20 4349 Butte Swayne Hill. South-facing road cutbank overlooking lower French Creek 746 Comment
  CHSC14058  Diplacus kelloggii J. Moore 1974-5-7 Butte Collected ca. 1 mi n of Jarboe Gap, on Hwy 70, n of Oroville. Comment
  CHSC29394  Diplacus kelloggii R. A. Schlising; S. Azevedo 1980-6-13 3696 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC44357  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte On a very deep road cut along Poe Power House Road, about 1/2 miles north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  CHSC113438  Diplacus layneae Lowell Ahart 2014-7-7 19557 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC61335  Diplacus layneae Lowell Ahart 1993-7-29 7116 Butte About 2 1/2 miles north-east of Bald Mountain about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC61336  Diplacus mephiticus Lowell Ahart 1993-7-31 7146 Butte On a log landing east of the dirt riad that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CAS-BOT-BC154040  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC39545  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC75407  Diplacus tricolor Jennifer Slater 1997-4-27 32 Butte Edge of vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC154166  Diplacus tricolor Lowell Ahart 1982-5-12 3433 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut 50 Comment
  SBBG66702  Diplacus tricolor M. M. Miles -Jun-1886 Butte Butte County [no specific locality] Comment
  CHSC49650  Disporum hookeri Vernon Oswald 1985-6-10 1820 Butte Hwy 32 0.9 mi sw of the road to Soda Springs Campground. 1097 Comment
  CDA42951  Dittrichia graveolens L. Ahart 2012-10-28 18542 Butte On the south edge of Biggs East Road, about 1/4 mile east of Highway 99, about 1 1/4 mile east of Biggs. Comment
  CHSC109355  Dittrichia graveolens T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. On the west shoulder of Bardees Bar Road approximately 0.5 road km northeast of intersection of Bardees Bar and Big Bend Roads. 657 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC3995  Dodecatheon clevelandii subsp. patulum Wayne O. Baum 1967-3-17 3 Butte In triangle area, on e. side of Cohasset Rd. and ca. 312 mi n. of Chico. 60 Comment
  CHSC48667  Dodecatheon hendersonii Vernon Oswald 1984-4-9 1124 Butte Feather Falls Trail, 0.75 trail mi n of the trail head at the end of Bryant Ravine Rd. 701 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
  CHSC67293  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1955 Butte Peter Ahart Ranch on bluff top of the North Fork Honcut Creek. Growing within 0.2-0.3 mi of #1952 and 1953. Comment
  UC175531  Dodecatheon hendersonii A. A. Heller 1913-3-9 10686 Butte two mi n Oroville; n of Oroville Comment
  UCD118957  Dodecatheon hendersonii R. J. Radzavage 1979-4-18 9 Butte E side of Table Mountain Rd. Approx. 3 mi. s of Cherokee. 320 Comment
  CDA6255  Dopatrium junceum T. C. Fuller 1976-8-1 20163 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC51077  Downingia bacigalupii Pauleen Broyles 1987-7-19 1082 Butte Ca 7.2 km (air) NE of Inskip. 1750 Comment
  CHSC75360  Downingia bicornuta Jennifer Slater 1997-4-27 34 Butte In the vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  POM59142  Downingia bicornuta E. B. Copeland 1903-5-15 3176 Butte Chico. Comment
  UC764505  Downingia bicornuta var. bicornuta R. F. Hoover 1938-4-24 3250 Butte 3 mi e Richvale Comment
  CHSC112902  Downingia ornatissima B. Castro; Robin Carter 2011-4-29 1878 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC26815  Downingia ornatissima M. S. Taylor 1978-5-7 1609 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  POM257240  Downingia ornatissima H. L. Mason 1927-5-9 3708 Butte Sacramento Valley, 15 miles W of Oroville. Comment
  UCD115553  Draba verna L. Ahart 1973-11-21 149 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile N and 2.5 miles E of Honcut, about 12 miles S of Oroville. 39 Comment
  SEINET10448473  Draba verna var. aestivalis Mary Susan Taylor 1979-3-19 Taylor 1929 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CAS-BOT-BC157792  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC113583  Dryopteris arguta Lowell Ahart 2014-8-24 19721 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC12109  Dryopteris arguta J. M. Pitts 1972-4-16 133 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC34  Dryopteris arguta V. Holt 1935-11-1 Butte Honey Run grade. 365 Comment
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  CHSC99551  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  RSA739621  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Cascade Range Foothills, Canyon drainage on E side of Dark Canyon raod 90 miles N of the gate to the boat ramp into Lake Oroville 396 Comment
  CAS-BOT-BC70859  Dryopteris arguta Wayne D. Dakan 1974-4-15 s.n. Butte near Pulga Comment
  HSC23372  Dryopteris arguta Larry D. Scott 1971-4-17 27 Butte 4 mi. NE of Covered Bridge on the N side of Honey Run Rd. Comment
  CHSC39017  Dudleya cymosa J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1783 Butte At the top of Bald Rock Dome in the Middle Fork of the Feather River. Comment
  SEINET4174012  Dysphania ambrosioides R. McKee 1918-9-27 s.n. Butte Chico Comment
  CHSC112198  Dysphania botrys Lowell Ahart 2013-4-20 18561 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC113116  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CAS-BOT-BC197095  Echinochloa crus-galli Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CHSC38814  Echinochloa crus-galli Vernon Oswald 1983-6-24 761 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  UC1100268  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12740 Butte nw Pennington; Gray Lodge Game Refuge Comment
  CDA14356  Echinochloa oryzicola B. Voorhees 1997-8-21 s.n. Butte Davit Dayton Ranch, south of Chico. 0 Comment
  CDA2001  Echinochloa oryzoides E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 853 Butte Biggs UC Field Station: north of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 miles E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. Comment
  CHSC31454  Echinodorus berteroi L. Ahart 1980-11-9 2692 Butte On the sides of the water hole on the Peter Ahart Ranch, ca. 1.5 mi n and 2 mi e of Honcut. 50 Comment
  UCD137954  Echinodorus berteroi Herbert L. Mason; Verne Grant 1946-9-4 13107 Butte Butte Sink. 833 Canal, West Gridley Road. Comment
  CHSC31569  Eclipta prostrata L. Ahart 1974-11-9 677 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS124129  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte About 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) north of Biggs. Comment
  CHSC65455  Elatine triandra Vernon Oswald 1988-10-25 3720 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  JEPS98467  Eleocharis acicularis Lowell Ahart 2000-9-15 8690 Butte 2 mi SE of Ordbend (N 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
  SEINET13710215  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8444 Butte 3.5 Mi. SW of Forbestown (T19N, R6E, sec 18, SE 1/4) 2400 Ft. 732 Comment
  UC600703  Eleocharis acicularis H. F. Copeland 1930-7-24 1356 Butte Jonesville; in swamp 1524 Comment
  SEINET13709377  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8711 Butte Rice Exp. Station NW of Biggs, Hamilton Rd. 1/8 Mi. E Riceton Rd. (T19B, R2E, S 35, se, Sw) 100 Ft. 30 Comment
  SEINET13709912  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8699 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi SW Chico Comment
  CHSC34061  Eleocharis bella L. Ahart; M. S. Taylor 1981-8-15 3030 Butte On banks of the West Branch of the Feather River, ca. 1.5 mi s of Snag Lake, ca. 9 mi n of Inskip. 1500 Comment
  POM196137  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  SEINET7585843 Image available Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC78298  Eleocharis bolanderi Lowell Ahart 2000-6-29 8541 Butte 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
  CAS-BOT-BC113367  Eleocharis engelmannii Beecher Crampton 1957-9-17 4623 Butte Biggs Rice Experiment Station, 5 mi NW of Biggs. Comment
  CHSC44956  Eleocharis macrostachya J. Bose 1982-4-26 426 Butte In ditch along Cherokee Rd ca 1 mi S of Cherokee (rd up Table Mtn). Comment
  CHSC56613  Eleocharis macrostachya L. P. Janeway 1988-6-26 2886 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi northeast of the high-voltage power-lines. 60 Comment
  JEPS94769  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte about 7 air mi n of Oroville (about 1/2 mi n of the ione oak tree, about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET13710023  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8387 Butte 13 Mi. SE of Oroville, 4 Mi. NE of Honcut (T17N, R4E, sec 12, SE 1/4) 180 Ft. 55 Comment
  CAS-BOT-BC113211  Eleocharis parishii Lowell Ahart 1988-7-24 6125 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, 731 Comment
  CHSC83296  Eleocharis quinqueflora L. P. Janeway; B. Castro 2002-7-7 7609 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  JEPS98724  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET13709637  Eleocharis radicans Lowell William Ahart, Lowell William Ahart 2000-1 8677 Butte Feather River, 1/2 Mi. W of Pacific Heights Rd., Oroville Wildlife Area, 3.3 Mi. SW Oroville (T19N, R3E, S 34, SE 1/4) 140 Ft 43 Comment
  CHSC38909  Eleocharis rostellata Vernon Oswald 1983-6-20 721 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. Growing on the southern-most seep of Upper Park Rd. 128 Comment
  CHSC69737  Eleusine indica Lowell Ahart 1997-10-25 7946 Butte Lawn, at the Butte County Historical Society museum, Oroville. 60 Comment
  CHSC80887  Elodea canadensis Lowell Ahart 2001-7-6 8883 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord bend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47644  Elymus caput-medusae Lowell Ahart 1979-6-2 1912 Butte Wash, in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC8205  Elymus caput-medusae D. McClain 1969-5-1 65 Butte 10 yds. s. of Upper Bidwell Rd., 1/2 mi. e. of Salmon Hole, Upper Bidwell Park, Chico. 76 Comment
  CHSC40457  Elymus elymoides subsp. elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CAS-BOT-BC203420  Elymus glaucus subsp. glaucus Lowell Ahart 1987-7-8 5808 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CAS-BOT-BC203425  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  JEPS119860  Elymus glaucus subsp. glaucus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico. Comment
  CHSC44912  Elytrigia intermedia subsp. intermedia Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CHSC59033  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CHSC65412  Elytrigia intermedia subsp. intermedia Vernon Oswald 1988-6-30 3542 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. On the edge of the road. 1146 Comment
  UC1594716  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte about 1/2 mi n Flea Valley (e of intersection, about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  POM193366  Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  SEINET6635565 Image available Epilobium angustifolium subsp. circumvagum H. F. Copeland 1928-1 443 Butte neighborhood of Jonesville; above Jones Creek 1829 Comment
  CHSC31787  Epilobium brachycarpum L. Ahart 1977-9-24 1587 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37441  Epilobium brachycarpum R. A. Schlising 1981-9-20 4199 Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. In ditch. Comment
  CHSC105262  Epilobium campestre Lowell Ahart 2010-6-20 16826 Butte 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
  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
  CHSC30765  Epilobium canum subsp. latifolium M. S. Taylor 1980-9-27 3344 Butte S side of Hwy 70, at Butte-Plumas county line, on granite wall. 548 Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  CHSC40775  Epilobium densiflorum Lowell Ahart 1985-6-17 5058 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC48618  Epilobium densiflorum Vernon Oswald 1985-5-28 1788 Butte Oroville-Quincy Hwy 1.1 mi n of Simmons Rd. 312 Comment
  CHSC88177  Epilobium densiflorum Lowell Ahart 2004-7-20 11287 Butte On the north side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  UC1594715  Epilobium densiflorum Lowell Ahart 1992-8-2 6903 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  UC204920  Epilobium densiflorum A. A. Heller 1914-7-24 11621 Butte Butte Meadows Sierra Nevada 1219 Comment
  UC873150  Epilobium densiflorum Lewis S. Rose 1939-6-11 39276 Butte 6 mi e Honcutt 137 Comment
  CHSC94408  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC1562331  Epilobium hallianum Vernon Oswald and Lowell Ahart 1990-6-27 4330 Butte Oro-Quincy Hwy 0.3 mi wnw Buckeye (site) (s edge of plains); Walker Plains 1536 Comment
  CHSC20111  Epilobium minutum M. S. Taylor 1975-5-9 571 Butte Ca. 50 ft e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  CHSC40776  Epilobium minutum Lowell Ahart 1985-5-15 4970 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC109598  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC111728  Epilobium torreyi Lowell Ahart; Doug Upton 2012-6-15 18198 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC7140  Epilobium torreyi M. I. Moore 1969-4-22 12 Butte 20 ft. n of Pentz Rd., 200 yds. e of Hwy. 99. 76 Comment
  JEPS124036  Epilobium torreyi Lowell Ahart 2015-7-4 20268 Butte About one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  CAS-BOT-BC57855  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  JEPS117724  Equisetum hyemale subsp. affine Lowell Ahart 2010-9-13 17151 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 31 Comment
  SEINET10530314  Equisetum telmateia var. braunii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4288 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  SEINET4568215  Eragrostis chloromelas R. McKee 1910-9-7 15370 Butte Chico Comment
  RSA518700  Eragrostis hypnoides L. Ahart 1990-9-30 6599 Butte along the edges of Lake Oroville, below the high water line of lake Oroville, below Canyon Creek Bridge across Lake Oroville 229 Comment
  UCD65666  Eragrostis pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Comment
  UCD65678  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs Comment
  CHSC92519  Eremogone cliftonii Samantha Mackey Hillaire; Barb Castro 2005-6-21 1223 Butte North of Pulga, near Lockerman Creek. Near transmission lines. UTM 10 S 0634984,4413006 NAD83. 1127 Comment
  CHSC41877  Ericameria nauseosa var. speciosa Lowell Ahart 1986-10-16 5400 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC110116  Erigeron canadensis L. P. Janeway 2012-10-18 11082 Butte Sacramento Valley. Along Hwy 70 at Wheelock Road/Coal Canyon Road. 136 Comment
  CHSC115350  Erigeron canadensis Lowell Ahart 2015-2-20 19935 Butte Above the retaining wall, just north of the railroad underpass, on the west side of Hountoon Street, Oroville 68 Comment
  CHSC13921  Erigeron canadensis M. S. Taylor 1974-9-14 318 Butte In Police Firing Range on s side of Chico Creek, opposite Golf Course, Bidwell Park, Chico. 91 Comment
  SFV3878  Erigeron divergens M. L. Vincent 1962-4-20 217 Butte Sierra Nevada Feather River Canyon Road, 7 miles northeast of Oroville. Roadside on a rocky bank. Comment
  UC1586589  Erigeron foliosus var. hartwegii Vernon H. Oswald and Lowell Ahart 1991-5-31 4637 Butte along the roadbed on the s side Thermalito Diversion Pool (at the drainage on the ne side of Sycamore Hill); Lake Oroville State Recreation Area, Sycamore Hill 76 Comment
  CAS-BOT-BC295161  Erigeron inornatus Lowell Ahart 1981-7-7 2913 Butte East of the bridge across Rocky Honcut Creek, Swedes Flat Road, ca. 7 mi. N of Bangor 350 Comment
  CHSC43178  Erigeron lassenianus var. lassenianus Robert Banchero 1981-6-20 523 Butte Ca 1 mi w of Jones meadow. 1810 Comment
  CHSC38345  Erigeron philadelphicus Vernon Oswald 1983-5-1 404 Butte Upper Bidwell Park, Chico, where Yahi Trail borders Chico Creek ca. 800 ft w of the e end of Upper Park Rd. 198 Comment
  CHSC44371  Erigeron strigosus Lowell Ahart 1988-6-29 6111 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock. 548 Comment
  CHSC3344  Eriobotrya japonica Robert L. Smith 1966-3-1 12 Butte U.S. Plant Introduction Station, 5 miles S.E. of Chico. Comment
  CHSC78768  Eriochloa contracta Lowell Ahart 2000-9-11 8687 Butte On the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) south of Oroville. 42 Comment
  CHSC38458  Eriodictyon californicum Vernon Oswald 1983-5-14 480 Butte Upper Bidwell Park, Chico, on the north rim ca. 1000 ft e of the power lines. 256 Comment
  UCD100307  Eriogonum luteolum P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside of Magalia Res. 310 Comment
  CDA13260  Eriogonum luteolum var. luteolum G. F. Hrusa, T. D. Wilfred 1996-7-8 13104 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  UC912846  Eriogonum luteolum var. luteolum A. A. Heller 1916-9-5 12646 Butte hills 8 mi n Oroville Comment
  JEPS122291  Eriogonum nudum var. oblongifolium Lowell Ahart 2014-8-24 19727 -A 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
  CAS-BOT-BC269842  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC269844  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte Hills 8 miles north of Oroville Comment
  CHSC39085  Eriogonum nudum var. pubiflorum R. A. Schlising; K. Tarp 1983-8-12 4444 Butte N part of county, on dirt road to Carr Mine NE of Philbrook Reservoir, 1.2 miles W of Plumas County line. 1981 Comment
  CHSC45488  Eriogonum roseum Lowell Ahart 1974-9-30 640 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS87143  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  CHSC40784  Eriogonum umbellatum var. ahartii Lowell Ahart 1985-8-15 5164 Butte 50 yards south of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  CHSC69452  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-8-30 7882 Butte On the south side of the road to Forbestown Reservoir, west of Woodleaf Creek, 1/2 mile south of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 609 Comment
  CHSC69453  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7883 Butte Near the McNab Cypress grove, near the steep 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
  RSA0118749  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  RSA0005154  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga. Comment
  SEINET10479572  Eriogonum umbellatum var. polyanthum Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5113 Butte About 8 miles north-east of Feather Falls. Comment
  UCD101499  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte at Pulga Bridge, North Fork Feather River. 417 Comment
  SEINET10479575  Eriogonum ursinum Mary Susan Taylor 1982-6-6 Taylor 4608 Butte T22N R5E ne/ne sec 6. Pulga SW quad. Pulga serpentine, along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  CHSC37517  Eriogonum ursinum var. ursinum M. S. Taylor 1982-6-6 4608 Butte On serpentine along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 487 Comment
  CDA4964  Eriophyllum lanatum var. achilleoides T. C. Fuller 1958-7-7 1909 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC38346  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-4-25 389 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.4 mi w of the power lines. 182 Comment
  CHSC77708  Eriophyllum lanatum var. grandiflorum Tim Stofer 1997-4-16 17 Butte This plant was located all along the trail 50 ft. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  JEPS117915  Eriophyllum lanatum var. integrifolium L. P. Janeway & Linus Gog 2008-7-18 9437 Butte Along Philbrook Creek between the east end of Philbrook Reservoir and Concow Road Northern High Sierra Nevada 1689 Comment
  CHSC4003  Erodium brachycarpum L. R. Alexander 1967-3-29 13 Butte Found 1 mi. from Chico on the left hand side of Paradise road. 60 Comment
  JEPS114969  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  JEPS117895  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road 126 Comment
  UC762232  Erodium macrophyllum R. F. Hoover 1937-5-18 2230 Butte 2 mi s Nelson Comment
  CHSC116735  Eryngium castrense Lowell Ahart 2016-5-24 20849 Butte On dry yellow soil, near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  SEINET10939831  Eryngium vaseyi Mary Susan Taylor 1976-3-23 Taylor 1033 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CHSC65178  Erythranthe cardinalis Lowell Ahart 1995-8-19 7617 Butte East side of North Huncut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  OBI9413  Erythranthe glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  CHSC3538  Erythranthe guttata John Francis 1996-3-21 87 Butte 1.8 miles from intersection of Hwy. Alt. 40 and Coal Canyon Rd., on Coal Canyon Rd. Comment
  CHSC44739  Erythranthe guttata R. Banchero 1980-6-19 252 Butte Along Concow Rd 0.6 mi N of its jct with Hwy 70, 0.4 mi S of the town of Concow. 573 Comment
  CHSC76970  Erythranthe guttata Margie Ceollins 1894-5-1 Butte Butte Creek. Comment
  CHSC95217  Erythranthe guttata R. D. Fischer 2004-5-2 799 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected on the south side of Big Chico Creek near north end of park boundary. 228 Comment
  CHSC44783  Erythranthe microphylla R. Banchero 1980-4-7 89 Butte Along LaPort Rd 3.4 mi S of its jct with the Ord-Bangor Hwy, 0.1 mi SW of the jct of LaPorte and Kings Ranch Rd. 137 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
  CHSC44782  Erythranthe nasuta R. Banchero 1980-3-23 76 Butte Along Crown Point Rd, 0.5 mi from its jct with Hwy 32. 539 Comment
  CHSC49009  Erythranthe pulsiferae Vernon Oswald 1987-6-9 2973 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbuf Rd. between Butte Creek House and Snag Lake. 1813 Comment
  SEINET10834239  Erythronium grandiflorum var. giganteum R. M. Austin Austin 5 Butte Butte Creek Comment
  JEPS119740  Erythronium multiscapideum Lowell Ahart 2012-3-23 17787 Butte About 100 yards east of Big Chico Creek, about 300 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC504533  Erythronium multiscapideum Lowell Ahart 1972-3-22 s.n. Butte Along Swedes Flat Road, Bangor 1500 Comment
  SEINET10938442  Erythronium multiscapideum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 A Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  CAS-BOT-BC402650  Eschscholzia caespitosa Mrs. C. C. Bruce 1897-4-1 2019 Butte Nelsons bar Comment
  CHSC101694  Eschscholzia californica subsp. californica Lowell Ahart 2009-4-26 15622 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
  CHSC36181  Eschscholzia lobbii John J. Krajanowski 1981-4-14 13 Butte Beatson Hollow, 3/4 mi w of Cherokee Road and 6 mi n of Oroville. 316 Comment
  CHSC95098  Euonymus occidentalis var. occidentalis L. P. Janeway 2006-8-6 8831 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CDA4808  Euphorbia lathyris L. Going 1963-8-9 Butte W. E. Graves property, 2330 Porter Way, Chico. 0 Comment
  CHSC115348  Euphorbia peplus Lowell Ahart 2015-3-24 19959 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 100 yards south of where the trail comes out to the old road and Highway 32, on the west side of the old road, about 6 miles (air) northeast of Chico. 368 Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  UC1557929  Eurybia radulina J. Semple, S. Heard 1986-8-14 8418 Butte between Stirling City and Butte Meadows (ne of Chico) just ne of Inskip 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
  JEPS120933  Festuca bromoides Lowell Ahart 2013-5-18 18700 Butte About 100 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  UCD65826  Festuca californica John Thomas Howell; Gordon H. True 1967-5-9 42243 Butte On NW side of Feather River Canyon near Pulga Bridge. 426 Comment
  CHSC111379  Festuca myuros Lowell Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  JEPS122270  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  SEINET10553410  Festuca pratensis Lowell Ahart 1988-6-29 Ahart 6104 Butte Meadow Fescue. On dry disturbed soil, along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock, Uncommon. Yellow Pine Forest. 914 Comment
  CHSC64256  Festuca rubra S. C. Morey 1983-8-1 649 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC50552  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4343 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC50553  Floerkea proserpinacoides Vernon Oswald; Lowell Ahart 1990-7-5 4352 Butte Headwaters of Willow Creek, 0.7 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug Summit), ca. 4 mi east of Jonesville. 1950 Comment
  CHSC1545  Fragaria vesca R. Carter 1964-6-12 115 Butte About 3/4 mi. W of Forbstown on Forbstown Rd. on N side of road. 914 Comment
  CHSC48844  Fragaria vesca Vernon Oswald 1984-4-9 1121 Butte Feather Falls Trail, near the trail head at the end of Bryant Ravine Rd. 755 Comment
  CAS-BOT-BC454524  Fragaria vesca subsp. californica M. S. Taylor 1980-4-1 2421 Butte Along S side of Butte Creek, ca. 1/4 mile downstream from Honey Run covered bridge, ca. 6 miles E of Chico. 121 Comment
  HSC18389  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 68113 Butte Feather River Canyon, Pulga 488 Comment
  CHSC11990  Frangula rubra E. B. Copeland 1931-7-28 657 Butte Jonesville. In brushy woods on dry ridge west of North Willow Creek. 1650 Comment
  CHSC46397  Frangula rubra subsp. obtusissima Lowell Ahart 1989-5-29 6311 Butte On the east side of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 822 Comment
  CAS-BOT-BC55728  Frangula rubra subsp. rubra E. B. Copeland 1931-7-28 657 Butte west of North Willow Creek 1650 Comment
  SEINET7417512 Image available Frangula rubra subsp. rubra E. B. Copeland 1951-7-28 657 Butte Jonesville; W of North Willow Creek 1650 Comment
  CHSC46267  Fraxinus dipetala Vernon Oswald 1989-4-19 3738 Butte Wurlitzer Unit, Vina Plains Preserve. Growing on the north side of Pine Creek near Cana-Pine Creek Rd. 56 Comment
  UC196270  Fraxinus dipetala A. A. Heller 11405 Butte between the 14 Mile House and Forest Ranch 731 Comment
  JEPS55691  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte Pinkston Canyon, Yankee Hill, Big Bend Road Yankee Hill; Pinkston Canyon, Yankee Hill 609 Comment
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Feb 23 2012
  CHSC2277  Fritillaria affinis R. Carter 1965-3-2 149 Butte 100 NW of Police Pistol Range on Centenial Ave., on hillside 30' above road NE of Chico. 152 Comment
  CHSC88632  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 293 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  SEINET8501273 Image available Fritillaria pluriflora H. E. Brown 1897-1 141 Butte Near Clear Creek Comment
  CHSC24788  Fritillaria recurva C. E. Stopher 1976-4-18 28 Butte 2.7 km sse of Forest Ranch. 489 Comment
  SEINET10836847  Galium Mary Susan Taylor 1975-3-10 Taylor 405 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
  SEINET10902545  Galium bifolium Mary Susan Taylor 1978-7-19 Taylor 1763 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  JEPS113505  Galium bolanderi Lowell Ahart, Lawrence Janeway 2007-7-10 14284 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  RSA755313  Galium bolanderi L. Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road., About 10 miles northeast of Chico. 273 Comment
  CDA6669  Galium mollugo Sterling O. Mattoon, L. C. Going 1962-6-19 Butte Southwest of Nord Avenue & Bell Road, Chico. 0 Comment
  SEINET10500636  Galium parisiense Mary Susan Taylor 1979-5-6 Taylor 2000 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC39240  Galium porrigens var. tenue M. S. Taylor; K. Tharp 1983-3-12 5233 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi SSE of Chico. 152 Comment
  UC1562385  Galium trifidum var. pacificum Lowell Ahart 1990-7-15 6554 Butte w Enterprise Boat Launch area (below high-water line of lake, about 1/2 mi nw of the Enterprise Bridge across lake, n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  UC1562386  Galium trifidum var. pacificum Lowell Ahart 1990-7-2 6535 Butte near McCabe Creek (below high water line of lake, about 1/2 mi sw of the Enterprise Bridge across lake); Lake Oroville 243 Comment
  JEPS117919  Galium triflorum L. P. Janeway 2008-6-22 9430 Butte Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC303382  Gamochaeta ustulata Lowell Ahart 1983-6-26 4152 Butte Along the edge of Ponderosa Way, about 1.5 miles SE of the E Fork of Canyon Creek, about 14.5 miles NE of Oroville 575 Comment
  CAS-BOT-BC303384  Gamochaeta ustulata Lowell Ahart 1984-6-10 4688 Butte Along the edge of a new subdivision road about 1 mile SE of Hurleton, 1/12 mile E of the Oak Grove Cemetary, about 10 miles E of Oroville 500 Comment
  CHSC31917  Garrya fremontii M. S. Taylor; E. Pierce 1981-1-29 3375 Butte Both sides of Cohasset Hwy., ca. 3 mi s of Cohasset. Comment
  RSA134772  Garrya fremontii Percy C. Everett, E. K. Balls 1959-10-20 23910 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  UC1122681  Garrya fremontii J. E. Sowder 1933-6-28 97 Butte 1.5 mi e Keefer's Old Mill; Chico Quad. 274 Comment
  CAS-BOT-BC282603  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CDA2169  Gastridium phleoides L. Ahart 2000-5-13 8340 Butte 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. Comment
  CHSC116995  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC97243  Gastridium phleoides Lowell Ahart 2007-6-3 13978 Butte On the east side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS119867  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the north side of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 3/8 miles (air) northeast of Chico. Comment
  UCD66563  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  SEINET10831689  Gastridium phleoides Lowell Ahart 1977-5-21 Ahart 1390 Butte On dry soil on bottom of a small wash. Peter Ahart Ranch, Honcut. Valley grassland. 50 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
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Jun 4 2007
  CHSC27998  Gayophytum heterozygum M. S. Taylor 1978-7-18 1672 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC94247  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  SBBG127506  Gayophytum heterozygum L. Ahart 2010-9-21 17215 Butte E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi (air) NE of Jones Meadow, ca. 2 1/2 mi (air) SE of Philbrook Reservoir 1917 Comment
  CHSC3487  Genista monspessulana Roger Jaegel 1966-4-20 112 Butte Located on Chico - Paradise road, four miles east of Chico. Comment
  CHSC55799  Geranium core-core Vernon H. Oswald; Lowell Ahart 1991-11-2 4884 Butte North end of Long Bar Rd., just south of the boundary of the State Recreation Area on the south side of Thermalito Diversion Pool, near Oroville. 97 Comment
  CHSC108983  Geranium dissectum Lowell Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  SEINET10495125  Geranium molle Mary Susan Taylor 1980-4-27 Taylor 2566 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  JEPS114586  Geranium purpureum Lowell Ahart, Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) soouthwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  SBBG128083  Geranium purpureum L. Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, ca. 1 mi SW of the Ponderosa Dam, ca. 2.25 mi NW of Forbestown 670 Comment
  CHSC43048  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of creek. 1097 Comment
  CHSC64212  Geum macrophyllum S. C. Morey 1983-7-23 585 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC392206  Geum macrophyllum E. B. Copeland 1929-7-25 Butte Jonesville 1500 Comment
  UC764582  Githopsis pulchella subsp. campestris R. F. Hoover 1937-5-18 2236 Butte 3 mi n Chico Comment
  CHSC46355  Githopsis specularioides Lowell Ahart 1989-5-28 6275 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET12331825  Githopsis specularioides Unknown 1985-1 4967 Butte W of Lunt Road, about 0.5 mi N of the Intersection of LuntRoad and Highway 70, N of Yankee Hill, 503 Comment
  RSA0106686  Glinus lotoides Lowell Ahart 2014-9-23 19869 Butte Northeast part of Horsehoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CHSC61541  Glyceria elata Lowell Ahart 1993-7-6 7050 Butte In a meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SEINET10901781  Glyceria elata Lowell Ahart 1985-6-30 Ahart 5079 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC115367  Gnaphalium palustre Lowell Ahart 2015-4-24 20076 Butte On the sides of a large duck field, 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  JEPS124348  Gnaphalium palustre Lowell Ahart 2015-10-26 20601 -A Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  RSA688937  Gnaphalium palustre L. Ahart 1986-11-9 5450 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  CHSC112891  Gratiola ebracteata Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC82258  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  JEPS98418  Gratiola ebracteata Lowell Ahart 2000-6-6 8450 Butte 5 mi (air) E of Oroville Dam (sides of an old gold mining pit, SE of where the dirt road crosses Oregon Gulch Creek, 1/4 mi NE of cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  HSC23332  Grindelia hirsutula B. Wilson 1968-5-3 185 Butte On Skyway, 2 mi. W of Paradise, N side of the road Comment
  CDA13734  Grindelia hirsutula var. davyi G. F. Hrusa, T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  CHSC47986  Hackelia californica Vernon Oswald 1983-7-19 884 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. In a meadow. 1524 Comment
  CHSC35082  Hackelia micrantha R. Schlising; R. Banchero 1980-7-31 3947 Butte N part of county, NE of Snag Lake. In small meadow. 1828 Comment
  CHSC35083  Hackelia micrantha Preston; Burk, Banchero, R. A. Schlising 1981-7-21 4162 Butte NE Butte County, on E slopes of Snow Mt. 2042 Comment
  UC600450  Hackelia nervosa H. F. Copeland 1932-6-27 Butte near Butte Creek House; Jonesville Comment
  JEPS95865  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC93979  Helenium bigelovii R. D. Fischer 2004-6-20 770 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected north of pond along the eastern meadow edge. 1371 Comment
  CHSC31607  Helenium puberulum L. Ahart 1975-7-5 848 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42463  Helianthella californica var. nevadensis Lowell Ahart 1987-5-22 5669 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC20681  Helianthus bolanderi M. S. Taylor 1975-6-30 809 Butte In ditches on e side of Cohasset Hwy, ca. 2 mi n of Chico. 91 Comment
  CDA13704  Helianthus bolanderi G. F. Hrusa 1997-8-5 14063 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC116133  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 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. 236 Comment
  CHSC38280  Heliotropium europaeum Vernon Oswald 1983-10-8 1055 Butte Upper Bidwell Park, Chico, along the n-w edge of the parking lot at the Horse Arena. 79 Comment
  SEINET10902879  Heliotropium europaeum Mary Susan Taylor 1974-10-11 Taylor 329 A Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  JEPS104402  Helminthotheca echioides Lowell Ahart 2003-6-16 10285 Butte On both sides of Wickman Rd, ca 100 yd south of Richvale West Rd, ca 1 3/4 mi w of Richvale. 29 Comment
  CHSC100948  Hemizonella minima R. A. Schlising 1980-6-10 3671 Butte Carpenter Ridge, along Humboldt Road, 1.9 miles northeast of junction with Highway 32 at Lomo. 1356 Comment
  CHSC46312  Hemizonia congesta subsp. clevelandii Vernon Oswald 1989-5-31 3794 Butte Wurlitzer Unit, Vina Plains Preserve. Near the nw corner of the Unit. 57 Comment
  CAS-BOT-BC309785  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte Near Durham Comment
  SEINET10475208  Hemizonia fitchii Mary Susan Taylor 1975-6-25 Taylor 806 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
  CHSC87190  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UC867721  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte low hills 8 mi n Oroville Comment
  JEPS88408  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8084 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (in the nw corner of Tract 9.1, Sanctuary I, (a unit managed for watergrass)); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  CHSC46356  Heterocodon rariflorum Lowell Ahart 1989-5-23 6241 Butte Near a small stream, north of the new subdivision road, 1.2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS122030  Heterocodon rariflorum Lowell Ahart 2014-7-2 19547 Butte 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. Comment
  UC1609085  Heterocodon rariflorum Lowell Ahart 1993-6-20 6981 Butte about 1 mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10460745  Heterocodon rariflorum Mary Susan Taylor 1980-4-27 Taylor 2548 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC39308  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC64131  Heteromeles arbutifolia Michael Deal 1992-4-19 6 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  SEINET5733943 Image available Heteromeles arbutifolia Lowell Ahart 1985-1 5092 Butte Ca. 2.5 mi. NE of Forbestown. 200 yds. S of the dirt road to the Forbestown Res. Yellow Pine Forest.; Forbestown 899 Comment
  CHSC42462  Heterotheca grandiflora Lowell Ahart 1987-5-6 5502 Butte Along the dirt road, near the Poe Power House on the east side of the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 280 Comment
  CHSC43243  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CHSC40439  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. 350 Comment
  OBI69218  Hirschfeldia incana Kari Fisher 2000-10-7 5 Butte Lindo Channel, 100 ft from E First Street 82 Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  CHSC49552  Holcus lanatus Vernon Oswald 1983-6-22 754 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. On the edge of a stream in meadow. 1264 Comment
  CHSC49553  Hordeum brachyantherum subsp. brachyantherum Vernon Oswald 1984-7-2 1343 Butte Humbug Rd. 1.7 mi s-w of Humbug Summit. In a meadow. 1859 Comment
  CAS-BOT-BC284987  Hordeum depressum Lowell Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CHSC29838  Horkelia californica subsp. dissita M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2765 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  SEINET10483365  Horkelia fusca subsp. parviflora Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4201 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CAS-BOT-BC143975  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  POM319240  Horkelia tridentata Patricia Wilder 1971-6-23 5208 Butte Oregon Hill road 4.1 miles SE of Challenge, W of California State Hwy 49. W slope of the Sierra Neveda, Yuba River 732 Comment
  CAS-BOT-BC536251  Horkelia tridentata var. tridentata H. F. Copeland 1920-7-11 53 Butte By Butte Creek 1828 Comment
  CHSC33906  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-7 3647 Butte S side of Fields Ridge Rd (20N24), 4.7 mi s of its jct with Lumpkin Ridge Road (20n24), 4.7 mi s of its jct with Lumpkin Rd, ca. 2 air mi se of Feather Falls. 1036 Comment
  CHSC55492  Hosackia stipularis var. ottleyi L. P. Janeway 1991-4-8 3868 Butte Ca 0.1 mi east of Dark Canyon Road, and ca 1.0 mi south of Hwy 70. 609 Comment
  CHSC96935  Hydrocotyle umbellata Lowell Ahart 2007-7-11 14285 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS98700  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC102846  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC45899  Hypericum anagalloides Lowell Ahart 1974-6-24 501 Butte Peter Ahart Ranch, on the bottom of a small wash, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC45900  Hypericum anagalloides Lowell Ahart 1977-6-3 1404 Butte 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
  CHSC104748  Hypericum concinnum L. P. Janeway 2010-6-19 10023 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC29801  Hypericum concinnum M. S. Taylor; J. Jokerst 1980-6-14 2879 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC48480  Hypericum formosum var. scouleri Vernon Oswald 1983-7-26 917 Butte Near Soda Springs Campground off of Calif. Hwy 32, 18.1 mi n=e of Forest Ranch. Growing in a wet, marshy spot beside Chico Creek. 1158 Comment
  CHSC742  Hypericum perforatum R. Carter 1964-6-10 112 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. 10 yds. behind house. 121 Comment
  CHSC34694  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-BC508346  Ipheion Lowell Ahart 1988-3-8 5929 Butte Peter Ahart Ranch about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 38 Comment
  CAS-BOT-BC133552  Iris hartwegii Lowell Ahart 1980-5-19 2316 Butte 1 mile E of Golden Trout Crossing 900 Comment
  CAS-BOT-BC133556  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22527 Butte State Hwy. 32, 11.5 mi. s. from Lomo 944 Comment
  CHSC2207  Iris macrosiphon I. Huffman 1930-5-5 Butte Paradise. 548 Comment
  CHSC24886  Iris macrosiphon W. A. Vaccaro 1976-4-17 2 Butte Pop. ca. 2.4 mi. E. of Centerville on So. side of Humbug Rd. 128 Comment
  CHSC90017  Iris macrosiphon Peggy Fain 1991-4-6 11 Butte N. side Richardson Springs Road ca. 4 km. from intersection with Cohasset Highway. 152 Comment
  RSA136503  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20484 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  SEINET10469754  Iris macrosiphon Mary Susan Taylor 1980-3-1 Taylor 2344 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  RSA366832  Iris missouriensis M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC52482  Iris tenuissima Rob Lee 1975-5-4 13 -23 Butte Eldredge Drive, Paradise. 304 Comment
  HSC87296  Iris tenuissima M. Stopher 1975-4-23 22 Butte Along Humbug Rd. in Butte Creek Canyon, 5 mi. ESE of Chico 85 Comment
  CDA43102  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada.; Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the upper end of Bald Rock Road. Comment
  UC398879  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte above Jonesville 1750 Comment
  CHSC28828  Isoetes howellii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 420 Butte Top of North Table Mountain, ca 1.0 mi n of Cherokee Rd. Comment
  CHSC31520  Isoetes howellii L. Ahart 1978-4-21 1662 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS120930  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 2.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  RSA261555  Isoetes howellii W. R. Powell 1970-3-26 1692 Butte Just off of La Porte Road, 1.8 miles NE of Bangor and ca 15 miles SE of Oroville. 343 Comment
  SBBG128804  Isoetes howellii L. Ahart 2013-5-22 18703 Butte ca. 0.5 mi SE of the Honcut Cemetery, ca. 3.25 mi NE of Honcut 54 Comment
  CHSC30366  Isoetes nuttallii J. D. Jokerst 1979-3-20 1149 Butte Top of North Table Mt., ca. 0.5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  JEPS127195  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CDA32020  Juglans californica var. hindsii L. Ahart 2009-8-3 16252 Butte On the north side of Ten Mile House Road, 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 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
  CHSC112339  Juncus acuminatus Lowell Ahart 2013-7-9 18829 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
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  CHSC96973  Juncus articulatus Lowell Ahart 2007-7-11 14286 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  UCD80387  Juncus balticus subsp. ater CNPS SN Foothill Team 2005-5-25 SNNR 0266 a Butte City of Chico, Upper Bidwell Park, .75 m west of Big Chico Creek. 209 Comment
  SEINET7072712  Juncus bufonius A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  CHSC32368  Juncus bufonius var. bufonius J. D. Jokerst 1980-6-14 831 Butte Big Bald Rock, N of Lake Oroville and E of Berry Cr. 914 Comment
  CHSC42378  Juncus bufonius var. bufonius Lowell Ahart 1987-5-6 5545 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC54363  Juncus bufonius var. bufonius M. Bailey 1991-4-19 567 Butte Butte College campus. Within fenced area around Wallis Pond, along drainage to the w of the pond and e of Well #3. 85 Comment
  JEPS114391  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14791 Butte Along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  JEPS94875  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte about 5 air mi sw of Gridley (n side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
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  CHSC6706  Juncus capitatus Marilyn Lee 1968-4-19 128 Butte West side of Cherokee Road ca 2 miles S. of Cherokee, 100 yards S.E. of cemetary, Table Mt. Comment
  JEPS118077  Juncus capitatus Lowell Ahart 2011-5-2 17346 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 32 Comment
  CHSC96936  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC94601  Juncus effusus subsp. pacificus Lowell Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC96972  Juncus effusus subsp. pacificus Lowell Ahart; Lawrence Janeway, Linnea Hanson 2007-7-10 14280 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville. 1024 Comment
  JEPS110157  Juncus effusus var. pacificus Lowell Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  JEPS106096  Juncus ensifolius Lowell Ahart 2004-8-2 11328 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  JEPS113537  Juncus ensifolius Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14279 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  CHSC112329  Juncus exiguus Lowell Ahart 2013-7-9 18830 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC28656  Juncus exiguus J. D. Jokerst 1979-10-13 383 Butte Along edges of Concow Cr. Intersecton of Concow Rd. Comment
  CHSC113385  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-2 19546 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
  CHSC117019  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte Depression (mud puddle) in the middle of a poor road, about 50 yards east of cow corral, about 200 yards north of the County Road, about one mile we of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC69059  Juncus howellii Lowell Ahart 1997-8-1 7761 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS127087  Juncus kelloggii Lowell Ahart 2016-4-15 20750 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC110146  Juncus leiospermus var. ahartii Lowell Ahart 1974-4-24 423 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41441  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Along the sides and on the bottom of small vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC103713  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC103732  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 375 Comment
  CHSC113248  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 356 Comment
  JEPS104444  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large 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
  JEPS110148  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 280 Comment
  JEPS110150  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-3 12558 Butte On the sides of vernal pools, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 405 Comment
  JEPS117321  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 375 Comment
  CHSC28655  Juncus mertensianus J. D. Jokerst 1979-9-23 357 Butte W. slope of Humboldt Peak, 1/4 mi. E. of Humboldt Summit (Humboldt Road). Northern most portion of Butte County. 2042 Comment
  JEPS113841  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  CHSC57212  Juncus orthophyllus L. P. Janeway 1988-6-14 2778 A Butte Ewalt Camp; near meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 924 Comment
  JEPS94884  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 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
  CHSC44524  Juncus oxymeris Lowell Ahart 1988-6-28 6083 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  CHSC57213  Juncus parryi L. P. Janeway 1987-7-5 2455 Butte At end of old logging road east of the Concow Road and 1.0 mi southwest of Jones Meadow. At granite outcroppings overlooking Balsam and Big Kimshew Creeks. 1798 Comment
  RSA754880  Juncus tenuis L. Ahart 2009-6-18 15914 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  SBBG126191  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte above Oroville-Quincy Hwy, 0.8 rd mi S of Stevens Ridge Rd, 2.5 air mi NE of Wild Yankee Hill 830 Comment
  SEINET10971394  Juncus uncialis Lowell Ahart 1983-4-10 Ahart 3931 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS113761  Juncus usitatus Lowell Ahart 2007-7-31 14400 Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville 34 Comment
  JEPS113765  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  CAS-BOT-BC235678  Keckiella breviflora var. glabrisepala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC235679  Keckiella breviflora var. glabrisepala Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CHSC39331  Keckiella breviflora var. glabrisepala Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  RSA0111938  Keckiella breviflora var. glabrisepala Lowell A. Ahart 2015-5-5 20143 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. 40 Comment
  CHSC44083  Kelloggia galioides L. P. Janeway 1987-6-26 2323 Butte SW end of Logue Mdws. 1325 Comment
  CHSC93992  Kelloggia galioides R. D. Fischer 2004-6-20 762 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles north of Butte Meadows off Scout Road. 1356 Comment
  JEPS103604  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 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
  CHSC48823  Kumlienia hystricula Vernon Oswald 1985-4-1 1692 Butte Oroville-Quincy Rd. 0.8 mi s of Canyon Creek Bridge. On the edge of an intermittent stream. Comment
  CHSC52820  Kumlienia hystricula R. E. Preston 1982-3-27 208 Butte N bank of McCabe Cr; ca. 1.7 mi s of Enterprise bridge over Lake Oroville, ca. 11 mi e of Oroville. 451 Comment
  UCD141220  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Road, Oroville. Comment
  CAS-BOT-BC340530  Lactuca serriola Lowell Ahart 1983-9-19 4457 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC340535  Lactuca serriola John Thomas Howell 1959-9-20 34628 Butte Eastern outskirts of Oroville 60 Comment
  SEINET10473874  Lactuca serriola Lowell Ahart 1983-9-19 Ahart 4457 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
  UCD133543  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham. Comment
  CHSC110410  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte on the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS119544  Lamium amplexicaule Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17857 Butte East of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC337910  Lasthenia californica E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  SEINET10473880  Lasthenia californica Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4282 Butte T20N R2E sw/nw sec 1. Shippee quad. SE corner of jct of Hwys 149 & 99, ca. l0 mi s of Chico. 225 ft. Valley Grassland. 68 Comment
  CHSC75251  Lasthenia fremontii Jennifer Slater 1997-4-27 37 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 60 Comment
  CHSC8139  Lasthenia fremontii J. G. Moore 1969-4-13 75 Butte Pentz Rd., 200 yds. e of Hwy. 99, on s side of road. 60 Comment
  CAS-BOT-BC354116  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte One mile N of Rock Creek along the county rd parallelling US Highway #99E. Comment
  RSA715476  Lasthenia glaberrima L. Ahart 2005-5-14 11810 Butte Peter Ahart Ranch, about 2 miles N and 0.25 mile E of Honcut, about 12 miles (air) SE of Oroville. 26 Comment
  CHSC46249  Lasthenia glabrata subsp. glabrata V. Oswald; L. Janeway 1989-4-17 3737 Butte Gridley-Colusa Hwy just east of Butte Creek. On the s edge of the road and in adjacent field. 18 Comment
  UCSC004638  Lasthenia glabrata subsp. glabrata Lowell Ahart 2005-6-1 11843 Butte T23N, R15E, Section 30, Hwy 70, east of the Plumas Co Airport, about 3 miles east of Beckwourth 1412 Comment
  CHSC8120  Lasthenia platycarpha M. Banning 1969-3-28 26 Butte 12 mi. N. Chico on Hwy 99. 76 Comment
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  SEINET5327273  Lathyrus laetiflorus R. McKee 2013-5-21 26607 Butte U. S. Plant Introduction Garden. Comment
  CHSC48509  Lathyrus nevadensis var. nevadensis Vernon Oswald 1984-4-9 1125 Butte Feather Falls Trail, 0.75 trail mi. n of the trail head at the end of Bryant Ravine Road. 701 Comment
  UC15343  Lathyrus nevadensis var. nevadensis Mrs. R. M. Austin Jun 1898 Butte Forest Ranch Comment
  CHSC23680  Lathyrus sulphureus M. S. Taylor 1976-4-27 1092 Butte Ca. 2 mi e of junc of Villas Rd and Cohasset Hwy, on n side of Ponderosa Way, ca. 23 mi ne of Chico. 609 Comment
  CHSC87553  Lathyrus sulphureus R. D. Fischer 2004-3-28 66 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  CHSC3182  Lathyrus tingitanus Robert D. Briggs 1966-4-28 R- 159 Butte Honey run road - 6 miles from downtown Chico. Comment
  HSC43118  Layia fremontii Maralyn O'Meara 1974-4-20 269 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  UC625525  Layia fremontii Frank W. Gould 1938-4-23 307 Butte 2 mi n Chico 60 Comment
  SEINET10474772  Layia fremontii Mary Susan Taylor 1973-1 Taylor 1 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS120087  Lemna minuta Lowell Ahart 2012-6-5 18158 Butte On the south side of Beastson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  JEPS117216  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-5-16 16700 Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC65989  Lepidium didymum Vernon H. Oswald 1996-5-9 7548 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee at the SW corner of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC3239  Lepidium nitidum Virginia Hagaman 1966-3-12 57 Butte 1/2 mile northeast of Hooker Oak along stream bank, in Lower Bidwell Park, Chico. Comment
  CHSC3947  Lepidium nitidum L. R. Alexander 1967-4-1 20 Butte Found n of Chico on right hand side of Cohaset road directly across from the first entrance to Chico Municipal Airport. 59 Comment
  SEINET5326385  Lepidium nitidum var. nitidum R. R. Halse 2002-3-27 6153 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  CAS-BOT-BC12800  Lepidium perfoliatum Lowell Ahart 1981-4-6 2742 Butte A little west of the Gray Lodge Headuarters, ca. 8 miles southwest of Gridley. 35 Comment
  CDA32437  Leptochloa fascicularis L. Ahart 2000-5-18 8372 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. Comment
  POM313213  Leptochloa fusca subsp. fascicularis H. L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  SEINET10927696  Leptochloa fusca subsp. fascicularis Lowell Ahart 1991-9-14 Ahart 6721 Butte Joie Osgood Ranch, about 2 miles east of Honcut. Valley grassland. 46 Comment
  SEINET10935974  Leptodactylon pungens subsp. pulchriflorum Mary Susan Taylor 1978-7-18 Taylor 1699 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CAS-BOT-BC226525  Leptosiphon acicularis Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UCD72995  Leptosiphon bicolor 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
  RSA725052  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1/0 air km west of Mountain House. 884 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CDA8196  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. Comment
  CHSC62430  Lessingia nemaclada L. P. Janeway 1993-9-3 4580 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  UC725484  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  JEPS17913  Lessingia virgata Rimo Bacigalupi with G. T. Robbins 1955-7-22 5442 Butte 2.5 mi s Oroville (n-facing hillside along Calif. Hwy. no. 24, at junction of road to Palermo) 48 Comment
  CHSC50402  Leucanthemum maximum Vernon Oswald; Lowell Ahart 1990-6-27 4322 Butte West side of Galen Creek, ca. 0.5 mi northeast of Berry Creek and Madrone Lake. 609 Comment
  SEINET12332637  Leucophysalis nana L. P. Janeway, Schlising, R. A. 1988-1 2918 Butte just NW of Summit Lake 1951 Comment
  CHSC28421  Lewisia cantelovii M. S. Taylor 1979-9-28 2194 Butte Butte county line at Hwy 70, between boundary and ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  UC1031359  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte top of Table Mountain Table Mountain Comment
  SD234157  Lewisia rediviva Virginia Pinkus Ryder 1965-4-3 353 Butte Sable Mtn. 381 Comment
  CDA34704  Lilaea scilloides L. Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  RSA776054  Lilaea scilloides P. Reisentz 1979-5-11 s.n. Butte 0.7 mile W on Lunt Road from Highway 70, north of Oroville Comment
  UC726301  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte river nw Chico Comment
  UC600464  Lilium parvum H. F. Copeland 1931-6-9 Butte Jonesville; woods by Jones Creek 1524 Comment
  SEINET3992016  Lilium parvum var. luteum E. B. Copeland, Mrs. Austin 1930-7-18 614 Butte Jonesville 1500 Comment
  LA22091  Lilium washingtonianum E. B. Copeland; 1931-7-12 615 Butte Jonesville 1600.0 Comment
  CHSC24949  Limnanthes alba V. L. Keeran 1976-4-21 9 Butte Ca. 115 m e of Cohasset Road and 1.15 km sw of Cohasset. 400 Comment
  RSA712987  Limnanthes douglasii subsp. nivea L. Ahart 2006-4-28 12542 Butte South part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  JEPS119683  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC726864  Limnanthes douglasii subsp. rosea A. A. Heller 1938-3-27 15005 Butte along US Hwy 99E near Cana road junction (n of Chico) Comment
  POM282577  Limnanthes douglasii subsp. rosea Lyman Benson 1935-3-27 6364 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  UCD116437  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  CHSC67554  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3240 Butte W of dirt road, E of Butte Creek Diversion Channel. 79 Comment
  UC1748332  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3241 Butte N of Hwy. 32 across from church 76 Comment
  UC1748333  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte E of Butte Creek Diversion Channel, S of Doe Mill Rd. 80 Comment
  UC971878  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1255 Butte 8 mi nw Oroville (along the Oroville-Chico road, near a large asphalt area marked Bombing Range) Comment
  JEPS111053  Limnophila X ludoviciana Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16446 Butte Rice Experiment Station NW of Biggs, drained field at NE corner of Hamilton and Riceton roads. Biggs 7.5' Quad. Comment
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Dec 15 2017
  UCD128331  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  UC1377647  Linanthus bolanderi John Ingram and Arlynn Ingram 1960-4-5 293 Butte about 2 mi s Paradise (along Neal Road) Comment
  SEINET12319547  Linanthus ciliatus Unknown 1970-1 57 Butte 2.3 mi on Upper Park Rd, Bidwell Park, Chico Comment
  CHSC3813  Linanthus dichotomus L. E. Dunkel 1965-3-30 4 Butte Side of hill ca. 25 yards east of State Highway 32 at curve 7 mi. e of Chico City limits (99 Freeway overpass). 357 Comment
  CHSC11951  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville. Mountain top west of 'the Summit. 2150 Comment
  UC133948  Linanthus pygmaeus Mrs. R. M. Austin Mar 1896 168 Butte e of Chico 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
  CHSC43147  Lindernia dubia var. anagallidea Robert Banchero 1979-9-23 37 Butte SW of Chico, just e of Sacramento River. 30 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
  CHSC51019  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS124342  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC48015  Linnaea borealis var. longiflora Vernon Oswald 1985-6-17 1845 Butte Quartz Creek' Rd., 0.4 mi S of Fall River, ca. 6 air miles NE of Feather Falls. 1066 Comment
  CHSC78930  Lipocarpha aristulata Lowell Ahart 2000-10-15 8709 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC111974  Lipocarpha micrantha Lowell Ahart 1974-8-14 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek. 150 Comment
  CHSC11776  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville. 1500 Comment
  UC1135274  Lithocarpus densiflorus C. G. Albertus 1933-7-25 51 Butte 1 mi n Powellton; Chico Quad. 1097 Comment
  UC177568  Lithocarpus densiflorus H. M. Hall 1914-7-31 9823 Butte Humboldt Road 914 Comment
  CAS-BOT-BC36590  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Soapstone Hill quad. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees 1463 Comment
  CHSC11075  Lithophragma bolanderi Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC24868  Lithophragma bolanderi T. L. Reynolds 1976-4-23 62 Butte Ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC4052  Lithophragma bolanderi J. W. Cherry 1967-3-26 Butte Along steep north bank of Big Chico Creek, directly south of Bidwell Park road, .3 mi. e. of Salmon Hole. 167 Comment
  CHSC31867  Lithophragma parviflorum var. trifoliatum L. Ahart 1974-3-18 328 Butte Near a large rock, near Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC23637  Lithospermum californicum M. S. Taylor 1976-4-4 1055 Butte On n side of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 609 Comment
  JEPS105681  Logfia filaginoides L. P. Janeway and John Hunt, Adam Henderson 2003-5-13 7784 Butte Northern High Sierra Nevada; E side of Middle Fork Feather River arm of Lake Oroville, 1.0 km SW of mouth of Frey Creek 299 Comment
  CHSC102424  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road. 440 Comment
  CHSC116999  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC66461  Lolium multiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7734 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  SEINET10661440  Lolium temulentum Lowell Ahart 2010-6-1 Ahart 16761 Butte T22N, R2E, northwest 1/4 Section 16. On both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 173 Comment
  POM132576  Lomatium dasycarpum subsp. tomentosum A. A. Heller, H. E. Brown 1902-5-14 5552 Butte Berry Canyon (near Clear Creek) Comment
  CHSC42632  Lomatium utriculatum Vernon Oswald 1986-4-29 1987 Butte Concow Rd. 1.1 mi sw of Ponderosa Way (Rim Rd.). 853 Comment
  UC195445  Lomatium utriculatum A. A. Heller 1914-4-3 11259 Butte 8 mi. n. Oroville Comment
  CAS-BOT-BC241399  Lonicera John Thomas Howell 1955-6-15 30484 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC48016  Lonicera conjugialis Vernon Oswald; Lowell Ahart 1987-7-1 3058 Butte Scotts John Creek 1.3 mi N of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ENE of Jonesville. 1813 Comment
  CAS-BOT-BC240452  Lonicera hispidula John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54412 Butte Madrone Lake near Berry Creek 600 Comment
  UC864769  Lotus argophyllus var. fremontii Lewis S. Rose 1940-5-30 40424 Butte 25 mi ne Oroville; Feather River Canyon 609 Comment
  RSA754938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-8 14716 Butte Lake Oroville, about 250-300 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 air miles east of Oroville. 260 Comment
  UC1129111  Lotus oblongifolius var. oblongifolius P. L. Johannsen 1936-7-17 943 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  JEPS115264  Lotus purshianus var. purshianus Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET12165110  Lotus scoparius L. Ahart, Ahart, P. 1984-1 4691 Butte ca 1miSE of Hurleton, 1/12miE of Oak Grove Cemetary, ca 10miE of Oroville 500 Comment
  CDA36456  Ludwigia decurrens M. Stewart & C. Mutters 2011-9-13 PDR# 1373328 Butte South-southwest of Richvale. 0 Comment
  CHSC112877  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  JEPS121789  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  CHSC38574  Ludwigia palustris Vernon Oswald 1983-8-26 1029 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. On the bed of Chico Creek. 85 Comment
  JEPS115647  Ludwigia palustris Lowell Ahart 2009-8-13 16275 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
  NY16037  Lupinus A. A. Heller 1914-3-26 11227 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  CHSC901  Lupinus albifrons R. Carter 1964-3-23 64 Butte 5 mi. E of Chico Rd. on Cherokee Rd. on rocky bank on E side of road. 60 Comment
  RSA712785  Lupinus albifrons var. albifrons L. P. Janeway, B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1052 Comment
  SEINET10870639  Lupinus albifrons var. albifrons Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7041 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine 701 Comment
  CHSC65456  Lupinus andersonii var. apertus Vernon Oswald 1985-6-3 1808 Butte Skyway 2.7 mi n of Stirling City. 1194 Comment
  CHSC27963  Lupinus arbustus M. S. Taylor 1978-7-19 1783 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  SEINET12154427  Lupinus aridus Unknown 1890-1 s.n. Butte Comment
  CHSC90494  Lupinus bicolor Stacy Scott 1981-4-24 6 Butte About 1.3 km north of Eaton Road, 100 m east of Cohasset Hwy along Sheep (Grizzly) Hollow; about 7 km north-northeast of Chico. 190 Comment
  HSC32403  Lupinus bicolor Kitsy Kelly 1974-4-20 22 Butte Table Mtn. Volcanic area Comment
  JEPS119696  Lupinus bicolor Lowell Ahart 2012-5-2 17952 Butte West of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC26255  Lupinus bicolor var. tridentatus John Steiner 1977-4-23 58 Butte Growing adjacent to s bank of Chico Creek at e end of Chico Canyon Rd. 65 Comment
  JEPS114719  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  CHSC46561  Lupinus lepidus var. sellulus V. Oswald 1989-7-12 3847 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC71114  Lupinus microcarpus var. microcarpus Jan Monelo 1989-4-25 17 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico; along drainage, ca 20 yds w of Hwy 99. 106 Comment
  UCD109258  Lupinus nanus Michael A. Vincent; Ethan H. Freid 1998-4-6 8117 Butte Table Mountain. Comment
  SEINET10490163  Lupinus nanus subsp. menkerae Uchida 1981-4-8 UCHIDA 8 Butte Flower brilliant blue with white spots on the banner. Large population, table Mtn, w side of cherokee rd, 6 mi n of intersection of table mtn boulevard. Chico quadrangle. T.20n,r.4e,sec.20 (se 1/4, nw 1/4). 417 Comment
  CHSC38508  Lupinus nanus var. latifolius Vernon Oswald 1983-4-18 344 Butte Upper Bidwell Park, Chico, on the north rim ca. 2000 ft w of the powerlines. 195 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
  RSA774142  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  UC600395  Lupinus polyphyllus var. burkei H. F. Copeland 1931-6-10 Butte Jonesville Comment
  POM118225  Lupinus sellulus var. lobbii H. M. Hall 1912-7-24 320 Butte Middle Fork of Feather River. 1280 Comment
  CHSC936  Lupinus stiversii E. Walker 1932-4-28 Butte Pulga on Feather River. 365 Comment
  CHSC107577  Luzula cascadensis Lowell Ahart 2011-8-23 17652 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC113381  Luzula comosa var. laxa Lowell Ahart 2014-7-2 19540 Butte On the south 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
  CHSC31908  Luzula macrantha L. Ahart 1975-3-18 709 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50064  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  JEPS116099  Luzula macrantha Lowell Ahart 2009-5-15 15711 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC107570  Luzula parviflora Lowell Ahart 2011-8-19 17642 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  SEINET10472488  Luzula subsessilis Mary Susan Taylor 1979-3-31 Taylor 1962 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  POM180888  Lycopus americanus H. F. Copeland 1923-6-4 816 Butte Nelson. Comment
  CHSC117428  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC80018  Lythrum hyssopifolia L. P. Janeway; B. Castro 1999-6-4 6453 Butte Sacramento Valley. East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. 30 Comment
  JEPS115254  Lythrum hyssopifolia Lowell Ahart 2009-6-30 15960 Butte West of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CDA5138  Lythrum hyssopifolia T. C. Fuller 1962-5-17 8716 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  JEPS120768  Lythrum portula Lowell Ahart 2013-9-20 19060 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  JEPS17912 Image available Lythrum salicaria Rimo Bacigalupi with G. T. Robbins 1955-7-22 5441 Butte about 2.5 mi s of Oroville (at junction of road to Palermo, along Feather River); Feather River 48 Comment
  JEPS120857  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  CAS-BOT-BC342641  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 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
  CAS-BOT-BC342709  Madia elegans Lowell Ahart 1988-6-21 6056 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap 426 Comment
  CAS-BOT-BC342718  Madia elegans Mrs. C. C. Bruce 1897-4-1 1986 Butte Forest - Ranch Comment
  CAS-BOT-BC342719  Madia 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
  SEINET10872111  Madia elegans Mary Susan Taylor 1976-5-5 Taylor 1108 Butte Abundant on N or S side of Hwy 70, ca. 2 mi N of Jarbo Gap, ca. 17 mi NE of Oroville, near Pulga; with Acer macrophyllum, Tel lima grandiflora, Cornus nuttallii. Comment
  CHSC74070  Madia elegans subsp. elegans B. Castro 1998-7-28 801 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. In upper (NE) edge of meadow. 929 Comment
  CHSC103957  Madia exigua Lowell Ahart 2010-5-23 16737 Butte On the north side of Guardians Trail, about 50 yards southwest of a small drainage, about 50 yards southwest of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 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
  CHSC43621  Madia exigua Vernon Oswald 1984-5-23 1200 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  CHSC45694  Madia glomerata Vernon Oswald 1984-7-31 1634 Butte Scotts John Creek, 0.9 mi n of 26N27. 1786 Comment
  HSC100783  Madia gracilis Lowell Ahart 2009-5-23 15722 Butte N side of Ten Mile House Rd., Upper Bidwell Park, 1/2 (air) mi. SW of intersection of Hwy. 32 and Ten Mile House Rd., 10 mi. NE of Chico. 311 Comment
  CHSC46218  Maianthemum racemosum Pauleen Broyles 1986-8-5 993 Butte Ca 0.3 mi n of road jct below Humboldt Peak, extreme n of county. Near Scotts John Creek. Comment
  POM218985  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville, at the Summit 2100 Comment
  POM37684  Malacothrix floccifera C. C. Bruce 1898-05 2465 Butte Doe mill ridge Comment
  SD8992  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Comment
  SEINET10475281  Malacothrix floccifera Mary Susan Taylor 1982-6-24 Taylor 4731 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  UCD134377  Malacothrix floccifera L. Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown. Along edge of dirt road to the generator on the n side of Ponderosa Reservoir. 370 Comment
  JEPS119502  Malva parviflora Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  JEPS87781  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte about 7 mi n Oroville (garden area at ne corner of Oregon City School, Oregon City); Oregon City 365 Comment
  CHSC26767  Marah fabacea var. agrestis P. Moyer 1972-3-2 91 Butte N end of L. S. Bridge, on CSUC campus. 60 Comment
  CHSC31644  Marah fabacea var. agrestis L. Ahart 1974-2-25 305 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC28446  Marah macrocarpa Robert A. Schlising; R. Waaland 1965-3-27 2764 Butte Just north of city Gridley limits, junction of Gridley Road and unnamed dirt road running west. Comment
  CHSC754  Marrubium vulgare M. Davidson; Vesta Holt label. 1929-5-6 Butte Bidwell Park. 60 Comment
  CHSC34154  Marsilea vestita L. Ahart 1981-8-31 3059 Butte Wyandotte Lake, ca. 8 mi e of Oroville. 450 Comment
  SEINET10530353  Marsilea vestita Mary Susan Taylor 1978-9-8 Taylor 1879 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC76396  Marsilea vestita subsp. vestita Lowell Ahart; Vernon H. Oswald 1999-10-3 8286 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
  CHSC101263  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC2825  Matricaria discoidea David Prall 1965-4-25 Butte Humbug Road 0.3 miles west of junction of Honey Run Rd. (covered bridge). Roadside. 198 Comment
  CHSC391  Matricaria discoidea P. Delaplane 1965-5-11 76 Butte 3-4 mi W of Paradise on Skyway ca 1/2 way to Paradise from Chico. 243 Comment
  CHSC46313  Matricaria occidentalis Vernon Oswald 1989-6-6 3799 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Waste area just n of the lighted parking area on the main ranch road n of Butte Creek-Little Dry Creek. 18 Comment
  CHSC40914  Meconella californica Lowell Ahart 1973-4-15 204 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  CAS-BOT-BC422639  Meconella californica W. R. Ernst 1958-3-27 215 A Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  SEINET10476233  Meconella californica Mary Susan Taylor 1974-3-19 Taylor 84 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CHSC63250  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  CHSC65200  Medicago arabica Lowell Ahart 1995-5-30 7587 Butte Along the edge of Beatson Hollow Creek, about 1 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  JEPS119758  Medicago arabica Lowell Ahart 2012-5-14 18056 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  JEPS87399  Medicago lupulina Lowell Ahart 1993-11-1 7274 Butte on s side of Butte City Hwy e Southern Pacific Railroad (w of Riceton Rd, about 3 1/4 mi nw of Biggs); Rice Experiment Station 30 Comment
  UC1506096  Medicago polymorpha Robert T. Clausen 1963-3-21 63011 Butte sewage disposal plant Sacramento Valley, Sacramento River Drainage, Chico (levee) 110 Comment
  CHSC44500  Medicago praecox Lowell Ahart 1988-5-8 5983 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC269387  Melica californica John Thomas Howell; Gordon H. True 1967-6-11 42563 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  JEPS116095  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  SEINET10508155  Melica californica Mary Susan Taylor 1982-5-21 Taylor 4490 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  UC600752  Melica fugax H. F. Copeland 1929-6-12 1210 Butte near mouth of Willow Creek (Jonesville); Jonesville 1524 Comment
  CAS-BOT-BC281299  Melica harfordii Lowell Ahart 1984-6-10 4713 Butte Along the Forbestown Diversion Dam, about 2 miles SW of the Forbestown Diversion Dam, NE of Forbestown 700 Comment
  UC1562308  Melica stricta Vernon Oswald and Lowell Ahart 1990-7-19 4374 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, 0.6 mi w of the Plumas County line) 1950 Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  CHSC10579  Melilotus indicus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC96978  Melilotus indicus L. Ahart 2005-5-2 11772 Butte E side of the Sacramento River, NW of Parrott Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 mi. SW of Chico. 26 Comment
  CDA5721  Melissa officinalis L. Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Fall. Comment
  CHSC90202  Melissa officinalis Robert Kissane 1989-4-22 16 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  RSA713018  Melissa officinalis L. Ahart 2005-11-12 12483 Butte 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. 294 Comment
  RSA75002  Mentha arvensis L. Ahart 2006-9-11 13285 Butte South edge of the North Fork of the Feather River, north side of Highway 760, 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
  JEPS124276  Mentha pulegium Lowell Ahart 2015-11-18 20661 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  SEINET10498895  Mentha pulegium Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4156 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
  CHSC47992  Mertensia ciliata Vernon Oswald 1985-6-3 1807 Butte Scotts John Rd. 0.9 mi n of Rd 26N27 which connects Humboldt Rd. and Humbug Rd. ca. 2.25 air miles ene of Jonesville. Along the creek. 1767 Comment
  CHSC47993  Mertensia ciliata Vernon Oswald 1984-7-31 1641 Butte Humboldt Rd. at the Willow Creek--Colby Creek bridge. Near the creek. 1487 Comment
  UC179654  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Montains 1554 Comment
  SD4159  Mertensia ciliata var. stomatechoides E. B. Copeland 1930-6-23 Butte Jonesville 1500 Comment
  SEINET10497356  Mertensia ciliata var. stomatechoides Mary Susan Taylor 1978-7-19 Taylor 1755 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
  CAS-BOT-BC428756  Micranthes californica Lowell Ahart 1980-3-8 2029 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC87427  Micranthes fallax R. D. Fischer 2004-3-22 117 Butte Upper Bidwell Park in Chico, on the lower east-side. Collected along road leading to old pistol range. 76 Comment
  CHSC48908  Micranthes odontoloma Vernon Oswald 1987-7-29 3165 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the se/S6. 1752 Comment
  CAS-BOT-BC348464  Micropus californicus var. californicus Lowell Ahart 1985-5-15 4994 Butte West of a small stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC96563  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC348462  Micropus californicus var. californicus Peter H. Raven 1953-5-9 5453 Butte 3.3 miles from Bangor on road to Oroville Comment
  SEINET10475280  Microseris acuminata Lowell Ahart 1985-4-21 Ahart 4879 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  UC473559  Microseris sylvatica L. S. Rose 1931-4-12 Butte Honcut Comment
  RSA4468  Microsteris gracilis subsp. humilis E. B. Copeland 1931-6-29 680 Butte Jonesville. 1500 Comment
  CHSC44734  Mimetanthe pilosa R. Banchero 1979-10-7 55 Butte Margin of Sacramento River at Bidwell State Park near boat launching ramp. 38 Comment
  UCR190687  Mimulus 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
  RSA435494  Mimulus aurantiacus var. grandiflorus Francis W. Pennell, A. A. Beetle 1940-6-5 25677 Butte route 24 Stony bank, red clay, along Featerh Rvier above Oroville, 10-12 mi. above 183 Comment
  RSA796039  Mimulus bifidus subsp. bifidus L. Ahart 2012-6-2 18128 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 287 Comment
  RSA0119189  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  SFV3381  Mimulus glaucescens B. Fuller 1962-5-26 Butte Sierra Nevada Paradise. Lot 55, Harrison Road. 520 Comment
  JEPS104638  Mimulus guttatus Lowell Ahart 2003-7-23 10438 Butte Around the margins of ponds, Oroville Wildlife Area, ca 1/4 mi w of Pacific Heights Rd, ca 5 mi (air) sw of Oroville. 26 Comment
  SEINET3079039 Image available Mimulus guttatus Marc Mittleman 1980-8-1 228 Butte Little Chico Creek, east side of China Garden Springs 262 Comment
  SEINET10570234  Mimulus kelloggii Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5390 Butte T23N R3E sec 28? S side of Humbug Rd, ca. 3.5 mi SW of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  UCD85075  Mimulus layneae Dena Grossenbacher; Marisano James 2009-6-7 1032 -b Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  JEPS87142  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  CHSC64018  Mimulus moschatus B. Castro 1987-8-29 213 Butte At s edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 mile E of Hwy 99 bridge. 60 Comment
  POM308489  Mimulus moschatus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3082 Butte Feather River Hwy. Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  UCD122947  Mimulus tricolor L. Ahart 1978-5-1 1687 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 50 Comment
  SEINET11934609  Minuartia douglasii L. P. Janeway 1988-1 2970 Butte Near the road to French Cr 0.6 mi S of Coyote Gap 1219 Comment
  CHSC48258  Moehringia macrophylla Vernon Oswald 1984-4-9 1127 Butte Feather Falls Trail near Frey Creek, 1.25 trail mi. from the trail head at the end of Bryant Ravine Rd. 560 Comment
  JEPS127080  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  JEPS103455  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CAS-BOT-BC435066  Mollugo verticillata John Thomas Howell 1959-9-20 34635 Butte Eastern outskirts of Oroville 60 Comment
  SEINET10865494  Monardella Mary Susan Taylor 1978-7-19 Taylor 1751 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
  POM193438  Monardella odoratissima subsp. pinetorum E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1550 Comment
  CHSC43019  Monardella sheltonii L. P. Janeway 1987-6-5 2127 Butte Along OroQuincy Hwy 0.5 mi S of suspension br over Lake Oroville. 320 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
  CHSC50676  Monardella sheltonii Lowell Ahart 1990-5-28 6502 Butte Near a deep pond, south of Palm Avenue, about 1/4 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  CHSC93867  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  SEINET10895146  Monardella sheltonii A. Graff 1993-7-23 Graff 343 Butte Plumas National Forest. Hwy. 70 southwest to Oroville from Arch Rock, at a turnout on the right. Mixed hardwood-conifer forest. Past bloom. Comment
  CAS-BOT-BC220308  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of unnamed canyon SE of Neal Road 79 Comment
  CAS-BOT-BC220309  Monardella venosa L. P. Janeway; B. Castro 1992-5-16 4187 Butte Small canyon between Hamlin Canyon and the unnamed canyon on the southeast side of Neal Road opposite the entrance to the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99 73 Comment
  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
  CHSC56572  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-1 2928 Butte Along meadowy creek draining the lake of southeastern-most headwaters of Butte Creek. In the creek and at dryish edges. 1935 Comment
  RSA636051  Montia fontana Michael A. Vincent, Ethan H. Freid 1998-4-6 8127 Butte Table Mountain Comment
  CHSC109123  Montia fontana subsp. amporitana Lowell Ahart 2012-3-23 17792 Butte On a large rock outcrop, 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. 215 Comment
  UC725932  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC34699  Montia parvifolia M. S. Taylor 1981-5-7 3634 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CHSC56573  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. At damp place among shrubs along dirt road. 624 Comment
  CAS-BOT-BC445134  Montia parvifolia Mrs. C. C. Bruce 1897-6-1 1117 Butte Forest Ranch Comment
  RSA325093  Montia parvifolia M. S. Taylor 1981-4-28 3568 a Butte Aalong Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  SEINET10929037  Montia spathulata var. tenuifolia Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4859 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  JEPS110303  Muhlenbergia andina Lowell Ahart 2006-9-11 13306 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
  UC1564738  Muhlenbergia andina V. Oswald and L. Ahart 1989-7-21 3885 Butte meadow paralleling Humbug Rd just ne West Branch of the Feather River (ca 0.5 mi ne of Snag Lake, ca 2.5 mi (air) se of Jonesville) 1780 Comment
  CHSC40647  Muhlenbergia filiformis Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 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
  CHSC61373  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET256564 Image available Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Rexervoir about 2 miles south of Paradise. 503 Comment
  CAS-BOT-BC83265  Myosurus minimus Lowell Ahart 1980-5-4 2180 Butte Thermalito. 65 Comment
  CHSC55399  Myosurus minimus subsp. minimus L. P. Janeway 1991-5-1 3922 Butte Ca 1 mi south of Wyandotte and ca 1/4 mi west of Dunstone Drive. 182 Comment
  POM99618  Myosurus minimus var. filiformis C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  CHSC80653  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CHSC20528  Myrtus communis Pamela Caldwell 1971-11-7 Butte CSUC campus. So-wil-len-no Rd. Behind amphitheatre. Comment
  CHSC66685  Najas gracillima Vernon H. Oswald; Lowell Ahart 1996-7-22 8093 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In shallow water on the S side of Tract 3.1, Sanctuary II. 32 Comment
  CHSC46198  Nama lobbii L. P. Janeway 1988-6-25 2859 Butte At the jct of Skyway and Bull Hill Rd; 3.8 mi N of Inskip. 1584 Comment
  UC426941  Nama lobbii E. B. Copeland 1930-6-27 448 Butte Jonesville 1600 Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  POM95650  Nasturtium officinale C. C. Bruce 1898-05 2460 Butte Springer. Comment
  CHSC42498  Navarretia capillaris Lowell Ahart; Vern Oswald 1987-6-10 5746 Butte Around a meadow, at Sunflower Flat, about 2 1/4 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  JEPS108740  Navarretia divaricata subsp. divaricata Lowell Ahart 2006-7-16 13002 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  JEPS117331  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-28 17249 Butte On the west 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
  CHSC44334  Navarretia divaricata subsp. vividior Lowell Ahart 1979-5-29 1906 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CDA34758  Navarretia filicaulis L. Ahart 2009-6-3 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC30685  Navarretia filicaulis M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2297 Butte Off dirt rd leading from Magalia serpentine to Feather River, rd connects to Coutelenc Rd and Skyway jct. 670 Comment
  JEPS120502  Navarretia filicaulis B. Castro, L. P. Janeway 2004-6-13 1469 Butte Northern High Sierra Nevada. Along Old Forebestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. Comment
  JEPS120850  Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC84029  Navarretia heterandra Lowell Ahart 2003-6-18 10290 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC91117  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  JEPS107883  Navarretia heterandra Lowell Ahart 2005-5-27 11812 Butte Pasture field, about 50 yards northwest of the tower, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  CHSC1293  Navarretia intertexta M. Roberson 1956-5-21 Butte SW of Paradise near Skyway. 426 Comment
  CHSC39953  Navarretia intertexta L. Ahart; P. Ahart 1983-6-26 4140 Butte Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. 500 Comment
  UC196268  Navarretia intertexta A. A. Heller 1914-5-11 11386 Butte 8 mi n Oroville Comment
  CAS-BOT-BC232626  Navarretia pubescens Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS107887  Navarretia tagetina Lowell Ahart 2005-5-28 11816 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville 91 Comment
  RSA0006287  Nemacladus montanus E. Brooks s.n. Butte Enterprise. Comment
  CAS-BOT-BC7204  Nemophila glauca C. C. (Mrs.) Bruce 1897-5-1 2037 Butte Big Chico Comment
  CHSC109101  Nemophila heterophylla Lowell Ahart 2012-3-23 17783 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC40032  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Moist woodland soil along Chico Creek about six miles east of Chico. Comment
  SEINET10837217  Nemophila heterophylla Mary Susan Taylor 1973-1 Taylor 61 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC51048  Nemophila pedunculata Pauleen Broyles 1987-3-24 999 Butte The Nature Conservancy Vina Plains Preserve Wurlitzer Addition. Comment
  SEINET260328  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Boat launch area off the Oroville Quincy highway near Canyon Creek about 12 mi NE of Oroville 270 Comment
  UCSB62940  Notholithocarpus densiflorus Sarr, Dan 1995-7-29 Butte 5 mi N of Forest Ranch 304 Comment
  CHSC110260  Odontostomum hartwegii L. P. Janeway 2012-6-2 10834 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC31849  Odontostomum hartwegii L. Ahart 1977-4-16 1306 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA34717  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  SEINET12164650  Onobrychis viciifolia M. S. Taylor 1981-1 3799 Butte T23N R5E sw1/4Sw1/4 Sec 29. Pulga Quad. N of Flea Valley Crk drainage + Pulga, ca5airmiE of Magalia 1067 Comment
  RSA32030  Orthocarpus campestris A. A. Heller 1940-4-20 s.n. Butte About 1 mile south of the Oroville Y. This station is very near the place where Hartweg got the type, 'in pascuis vallis Sacramento.' Comment
  SEINET12326989  Orthocarpus purpurascens Unknown 1984-1 2 Butte ca 5 mi E of Hwy 99, jct of Honey Run & Humbug Rds, SE side of road 107 Comment
  SEINET10507736  Oryzopsis micrantha Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4690 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CHSC88069  Osmorhiza chilensis R. D. Fischer 2004-6-6 155 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down Pine Trail. 419 Comment
  CHSC1173  Oxalis corniculata M. Harless 1930-3-15 Butte Chico. 57 Comment
  SEINET10495035  Oxalis corniculata Mary Susan Taylor 1975-4-6 Taylor 438 Butte Chico. 52 Comment
  CHSC9144  Oxalis rubra L. W. Gray 1970-5-1 28 Butte Collected at 710 W. 3rd street on lawn in front of house, Chico. Comment
  SEINET10837347  Oxalis rubra Mary Susan Taylor Taylor 808 Butte Weedy or cultivated plants of Chico. 61 Comment
  SEINET10873882  Oxypolis occidentalis Mary Susan Taylor 1975-8-31 Taylor 893 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  UCD134777  Packera eurycephala var. lewisrosei Lewis S. Rose 1967-6-11 67103 Butte 3 miles south of Pulga, Feather River Canyon. 609 Comment
  CHSC31241  Panicum acuminatum M. S. Taylor 1979-10-12 2244 Butte Big Chico Creek, at end of Upper Bidwell Park Rd., ca. 10 mi ne of Chico. 243 Comment
  CAS-BOT-BC253703  Panicum capillare Lowell Ahart 1981-8-15 3042 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  CHSC116287  Panicum capillare Lowell Ahart 2015-10-26 20605 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  UCD89584  Panicum dichotomiflorum Beecher Crampton 1963-9-9 6885 Butte Honcut. Comment
  CDA2143  Panicum rigidulum J. T. Howell 1961-9-22 36714 Butte Bank of Feather River, Oroville. Comment
  CHSC112104  Parentucellia viscosa Lowell Ahart 2012-6-5 18173 Butte On the strand of the reservoir, north of Beatson Hollow, about 1-3/4 miles northwest of theiron gate on the north side of Cherokee Road, North Table Mountian, about 6 miles (air) north of Oroville. 295 Comment
  SEINET12216577  Parvisedum pumilum A. R. Shepard 1981-1 12 Butte T23N, R1W, Sec. 4 NE quarter, ca 15 mi N of Chico and 900 ft W of Singer Creek; 58 Comment
  CAS-BOT-BC259720  Paspalum distichum John Thomas Howell 1959-9-20 34666 Butte Eastern outskirts of Oroville 60 Comment
  CHSC103967  Pectocarya pusilla Lowell Ahart 2010-5-7 16615 Butte Below rim, 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
  CHSC28139  Pectocarya pusilla Robert A. Schlising 1979-4-4 3352 Butte Northeast of Chico, along Skyway (hwy to Paradise). 243 Comment
  CHSC2489  Pedicularis densiflora W. Fitzwater 1958-3-19 Butte Forest Ranch area ca. 15 mi. NE of Chico. Comment
  CHSC94911  Pedicularis densiflora L. P. Janeway 2006-5-28 8644 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. 1248 Comment
  SEINET10549178  Pedicularis densiflora Mary Susan Taylor 1981-3-16 Taylor 3402 Butte T21N R6E sw sec 18. Brush Creek quad. S side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CAS-BOT-BC69334  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CHSC28510  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1979-10-13 2265 Butte W side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC39227  Pellaea mucronata M. S. Taylor; K. Tharp 1983-3-11 5222 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 Comment
  SEINET10971559  Pellaea mucronata Lowell Ahart 1983-3-28 Ahart 3912 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  SEINET11716737  Pellaea mucronata M. S. Taylor 1980-1 2347 Butte overlooking Hamlin Canyon, ca 0.25 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise 302 Comment
  RSA769602  Pellaea mucronata var. mucronata L. Ahart 2009-4-22 15601 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
  UC382581  Pellaea mucronata var. mucronata Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Springs Chico Comment
  JEPS34384  Penstemon azureus Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8860 Butte 0.75 mi s Pulga (above side road off U.S. highway 40 in canyon of the N Fk Feather River, just before bridge across Feather River, northern base grade over Jarbo Gap); canyon of N Fk of Feather River, grade Jarbo Gap 426 Comment
  UC726756  Penstemon azureus var. angustissimus A. A. Heller 1940-6-5 15701 Butte along the Feather River Highway e of the first [Feather River] crossing; along the Feather River highway e of first crossing Comment
  RSA699542  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 air miles N of Paradise, and W of upper Paradise Pines. Turn W off Skyway Road on Nimshew Road and take the S turn on Centerville Road (on older maps Humbug Road), ca 1 mile S of this junction. 644 Comment
  UC1012163  Penstemon azureus var. azureus F. W. Pennell and A. A. Heller 1940-6-5 25683 Butte Route 24 above Oroville (along Feather River); Lassen Nat. Forest, along Feather River 548 Comment
  CHSC44795  Penstemon deustus var. suffrutescens R. Banchero 1980-7-7 293 Butte Along County Line Rd 0.2 mi E of its jct with Golden Trout Crossing, 1.1 mi E of Camp 18. 1280 Comment
  HSC66346  Penstemon gracilentus M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3209 Butte Humboldt Peak, on E side 2155 Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC42069  Penstemon heterophyllus var. purdyi Steve Holloway 1986-4-18 26 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  UC398654  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte seven mi n Chico (along Rock Creek); , n of Chico Comment
  CDA13238  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-8 13085 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC104792  Penstemon laetus var. leptosepalus L. P. Janeway 2010-6-19 10025 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  CHSC44698  Penstemon laetus var. leptosepalus R. Banchero 1980-6-17 228 Butte Along Bald Rock Rd, 0.2 mi E of its jct with Zink Rd, 4.6 mi E of its jct with Hwy 162. 731 Comment
  JEPS106173  Penstemon laetus var. leptosepalus Lowell Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  SFV10338  Penstemon laetus var. leptosepalus M. L. Vincent 1963-6-8 400 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  UC726288  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 mi from Oroville; embankment on Feather Highway Comment
  CAS-BOT-BC245680  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  UC463015  Penstemon newberryi var. newberryi E. B. Copeland 1931-6-19 Butte Big Summit , Big Summit (Jonesville) 2100 Comment
  CHSC36300  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CHSC3295  Pentagramma triangularis M. L. Hillier 1966-3-7 Butte 100 to 300 yds s of covered bridge over Butte Creek. Comment
  CHSC83907  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-10 10075 Butte Below the basalt cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 309 Comment
  POM82590  Perideridia bolanderi subsp. involucrata C. C. Bruce 1897-06 2047 Butte [no locality information provided] 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
  JEPS50772  Perideridia oregana Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9289 Butte on Feather River Hwy about 1 mi n beginning of grade (just e of Messilla Valley) 304 Comment
  CHSC40238  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 b Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd. at the W. Branch of the Feather R. 1615 Comment
  CAS-BOT-BC413474  Persicaria amphibia Lowell Ahart 1987-8-3 5852 Butte E of the Western Pacific Railroad S of Central House Road, ca. 1.5 mi. N and 1 mi. W of Honcut 30 Comment
  CHSC45466  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte On the sides of a deep wash, about 1/4 mile south-east of Stirling City. 1097 Comment
  CHSC66674  Persicaria hydropiperoides Vernon H. Oswald; Lowell Ahart 1996-7-22 8082 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Abundant in wet mud on the bottom of a drying slough on the W side of the levee at the SW corner of Tract 6, Sanctuary I. 30 Comment
  CHSC110389  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC10585  Phacelia cicutaria Lowell Ahart 1968-4-27 Butte Near Honcut. 45 Comment
  JEPS50781  Phacelia corymbosa Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9281 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap 609 Comment
  UC1047037  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 343 Butte along Feather River Hwy about 0.5 mi below Las Plumas road junction (about 14 mi ne of Oroville) Comment
  SEINET11263935  Phacelia egena Lowell Ahart 1992-9-20 6922 Butte Lake Oroville, about 1/8 miles west of the Enterprise Boat Launch Ramp, about 3/4 miles SW of Rocky Point.; 0 244 Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  UC196301  Phacelia mutabilis A. A. Heller 1914-7-23 11600 Butte edge of forest about Chico Meadows 1219 Comment
  CHSC39122  Phacelia procera R. A. Schlising 1980-7-5 3838 Butte First crossing of Butte Creek on main road, e of Butte Meadows; at immediate roadside in region of streamside vegetation. 1341 Comment
  UC392196  Phacelia procera E. B. Copeland 1929-7-29 Butte above Jonesville (by creek); Butte Creek 1700 Comment
  CHSC30065  Phacelia purpusii R. A. Schlising; R. Banchero 1980-6-17 3730 Butte N of Magalia and De Sabla, along Skyway ca 1.5 mi SW of Lovelock. 780 Comment
  CHSC39123  Phacelia purpusii R. Schlising 1980-6-2 3619 a Butte NE of Forest Ranch along Hwy 32. Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC154304  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  RSA0008811  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte West of Arch Rock Tunnel on Feather River Hwy a mile or two west of Arch Rock Tunnel. Comment
  SEINET13095392  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte 2 miles west of Arch Rock Tunnel. Comment
  JEPS94650  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte about 7 air mi n Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CAS-BOT-BC259043  Phalaris lemmonii Lowell Ahart 1984-5-10 4600 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  JEPS117537  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 265 Comment
  JEPS95866  Phalaris paradoxa Lowell Ahart 1999-5-21 8068 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CAS-BOT-BC77370  Philadelphus lewisii Grace Kermode 1899-6-1 s.n. Butte Chico 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
  CHSC6628  Phlox M. MacArthur 1968-6-13 323 Butte SE yard of building V, Chico State College campus. 60 Comment
  UCD118397  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  POM282388  Phlox diffusa subsp. diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  CAS-BOT-BC134916  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magalia. Sierra Nevada 731 Comment
  CHSC3591  Phoradendron densum Susan Carrauthers 1966-3-6 45 Butte 1/4 mi N.E. of Magalia (city) train station on Coutelenc Road. N. of city of Paradise. Comment
  CAS-BOT-BC141246  Phoradendron serotinum subsp. tomentosum A. A. Heller 1914-1-28 11157 Butte Hills 5 miles E of Chico Comment
  CHSC106605  Photinia serratifolia L. P. Janeway 2011-4-20 10236 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  CHSC59523  Phyllostachys bambusoides Bryan C. Willingham 1968-6-3 Butte Purchased in Nagasaki, Japan. Introduced to the Chico (California) Plant Introduction Station. Comment
  CHSC49440  Physalis philadelphica Vernon Oswald 1987-7-23 3144 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CAS-BOT-BC140562  Physocarpus capitatus Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  CAS-BOT-BC140564  Physocarpus capitatus S. Bianco 1995-10-28 S. 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  CHSC100484  Phytolacca americana Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  SEINET10474326  Picris echioides Mary Susan Taylor 1978-9-8 Taylor 1896 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC39546  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UCD136789  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte In Valley Grassland just E of Chico. NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 68 Comment
  SEINET10866943  Pinus lambertiana Mary Susan Taylor 1975-9-12 Taylor 913 A Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC11775  Pinus monticola E. B. Copeland 1929-7-17 331 Butte Above Jonesville. 2000 Comment
  UC813281  Pinus monticola E. B. Copeland 1929-7-17 331 Butte above Jonesville (summit ridges and n slopes) 2000 Comment
  CHSC4460  Pinus ponderosa C. Glascock 1965-2-6 220 Butte Ca. 15 yds uphill from road. From Hwy. 70 turnoff on road 24N23 and turn E at its dead end-total dist. From Hwy=1.1 mi. Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  CHSC82716  Pinus sabiniana Tara Morgan 2002-3-19 3 Butte Right off the west side of Highway 32 on the slope of Big Chico Creek watershed towards the top of the slope along the paved road. 528 Comment
  NY62730  Pinus sabiniana Anonymous 1925-7-22 s.n. Butte Chico 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
  CHSC61525  Piperia transversa Lowell Ahart 1993-6-16 6961 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air Miles south-west of Forbestown. 609 Comment
  CHSC61526  Piperia transversa Lowell Ahart 1993-6-16 6962 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) south-west of Forbestown. 609 Comment
  UC179638  Piperia unalascensis H. M. Hall 1914-7-23 9777 Butte summits above Butte Creek 1828 Comment
  CAS-BOT-BC254404  Piptatherum miliaceum Lowell Ahart 1981-9-26 3207 Butte 6 miles W of Chico 40 Comment
  CAS-BOT-BC254406  Piptatherum miliaceum Lowell Ahart 1988-5-30 6016 Butte Near the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  UCD108190  Pisum sativum Robert Kehlor 1951-5-6 42 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  SEINET10529815  Pityrogramma pallida Mary Susan Taylor 1979-11-15 Taylor 2288 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10529826  Pityrogramma triangularis Mary Susan Taylor 1979-11-15 Taylor 2290 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  CHSC111340  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte 30 yards southeast of the fence, about 200 yards southwest to the fence, about 200 yards southwest to the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 105 Comment
  CAS-BOT-BC6468  Plagiobothrys austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  UC480682  Plagiobothrys austiniae H. F. Copeland 1928-4-3 1113 Butte foothills of Butte Co. Comment
  SBBG28853  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Rock Crk, 7 mi N of Chico Comment
  SEINET10781184  Plagiobothrys fulvus Lowell Ahart 2010-5-16 Ahart 16684 Butte T20N, R4E, northeast 1/4 Section 20. Normal size plants, on dry to damp soil, open grassland, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Basalt Grassland. 372 Comment
  CHSC100833  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 a Butte About 1 mile E of Chico between Hwy 32 and Humboldt Road. 76 Comment
  CHSC29980  Plagiobothrys glyptocarpus Lowell Ahart 1980-5-12 2248 Butte Peter Ahart Ranch, ca 1 mi N and 2.25 mi E of Honcut; in small wash in pasture. 50 Comment
  SFV3138  Plagiobothrys glyptocarpus M. L. Vincent 1962-4-17 202 Butte Sierra Nevada Cherokee Road at Table Mountain. Comment
  UC1609086  Plagiobothrys glyptocarpus Lowell Ahart 1993-5-17 6947 Butte dry vernal pool on w side of Dunstone Rd about 1 1/2 mi n and 3 mi e Honcut (about 12 mi se of Oroville) 60 Comment
  SEINET10497373  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 Ahart 4590 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  UC196310  Plagiobothrys greenei A. A. Heller 1914-4-6 11266 Butte 8 mi n Oroville Comment
  JEPS108771  Plagiobothrys hispidulus Lowell Ahart 2006-7-16 13001 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CHSC111375  Plagiobothrys nothofulvus Lowell Ahart 2012-5-2 17973 Butte On damp soil, 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 3/4 mile east of Chico. 85 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC39031  Plagiobothrys scriptus Lowell Ahart 1983-5-12 3971 Butte Along the power lines, about 0.5 mi ne of Hwy 99 and Pentz Roads. 65 Comment
  JEPS104013  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Rd Boat Ramp, on the n side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin road, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 38 Comment
  JEPS68118  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  UC763056  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  CHSC116703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-14 20830 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC29269  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-15 3366 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
  CHSC82411  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS117192  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
  RSA475191  Plagiobothrys stipitatus var. micranthus Aaron Liston, S. Meury 1988-5-28 743 -3 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  RSA32734  Plagiobothrys tenellus A. A. Heller 1938-4-14 15037 Butte Between Pentz and Cherokee. Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  SEINET10499843  Plantago bigelovii Mary Susan Taylor 1976-3-23 Taylor 1031 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CHSC118550  Plantago elongata Lowell Ahart 2017-2-27 21384 Butte Along a poor road, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CHSC47459  Plantago elongata Lowell Ahart 1974-4-24 426 Butte Growing on the bottom of small vernal pools, 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
  UC1506095  Plantago erecta Robert T. Clausen 1963-3-20 63009 Butte s of Chico (low ridge e of Mutual Ditch, Sacramento River drainiage); Sacramento Valley, Sacramento River 57 Comment
  RSA325092  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, ca 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca 2 mi N of Lake Concow, ca 20 air mi NE of Oroville. 854 Comment
  SEINET8246451  Plantago erecta George Kingston 1980-3-5 6 Butte ne of Horseshoe Lake in Bidwell Park, Chico. 152 Comment
  CHSC38585  Plantago virginica Vernon Oswald 1983-5-2 421 Butte Upper Bidwell Park, Chico, at the Police Pistol Range. 91 Comment
  CHSC38586  Plantago virginica Vernon Oswald 1983-5-11 470 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the s edge of the Golf Course. 97 Comment
  CHSC5933  Platanus racemosa M. MacArthur 1968-6-17 194 Butte SE side of Big Chico Creek, N of Dining Hall, ca. 10 ft. from creek, Chico State College campus. 60 Comment
  JEPS115640  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA30397  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canyon of Big Chico Creek E of Chico. 69 Comment
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Feb 17 2016
  CHSC27183  Platycladus orientalis P. Moyer 1971-10-8 36 Butte W side library, CSUS campus. 60 Comment
  JEPS117148  Plectritis macrocera Lowell Ahart 2010-4-30 16596 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
  UC131905  Plectritis macrocera Mrs. R. M. Austin July 1896 824 Butte Colby Comment
  CAS-BOT-BC458147  Pleuricospora fimbriolata E. B. Copeland 1937-12-1 s.n. Butte Jonesville Comment
  JEPS114972  Poa annua Lowell Ahart 2008-5-21 14775 Butte 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
  CAS-BOT-BC255686  Poa bolanderi M. S. Taylor 1978-7-19 1777 Butte On E side of Upper Scotts John Road, ca. 2 miles N of its junction with Scotts John Road, ca. 6 miles NE of Jonesville 1828 Comment
  CHSC88148  Poa bolanderi Lowell Ahart 2004-7-23 11305 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
  SEINET10968188  Poa bolanderi Mary Susan Taylor 1978-7-19 Taylor 1777 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CAS-BOT-BC254921  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather RIver, about 2 miles SE of Jarbo Gap 283 Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  CHSC51377  Poa compressa Vernon Oswald 1990-9-11 4447 Butte Pond located ca. 1 mile south of Brush Creek. On a path on the south side of the pond. 990 Comment
  CHSC50440  Poa howellii Vernon Oswald 1990-6-18 4299 Butte Paradise Lake, ca. 3 mi north of Magalia. On a trailside bank on the northwest side of the lake near Coutolenc Creek. 777 Comment
  SACT001941  Poa pratensis Herbert Copeland 1929-5-10 Butte In damp open places 1500.0 Comment
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  CDA2374  Poa pratensis subsp. pratensis L. Ahart 2004-7-23 11304 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
  CHSC111144  Poa pratensis subsp. pratensis Lowell Ahart 2012-6-14 18188 Butte On the south side of the path, edge of the lawn, south side of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  JEPS119850  Poa pratensis subsp. pratensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18240 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Patk, Chico. Comment
  RSA4414  Poa pringlei E. B. Copeland 1931-6-22 s.n. Butte Jonesville 2000 Comment
  CHSC101298  Poa secunda subsp. secunda Lowell Ahart 2009-4-22 15599 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
  SEINET12318324  Pogogyne douglasii Unknown 1974-1 s.n. Butte Found ca 12 mi N of Chico at jct of Broyles Road and Hwy 99 61 Comment
  SEINET12318337  Pogogyne zizyphoroides E. D. Osman 1978-1 18 Butte Ca 7.8mi N of Chico and 200' E of Cohasset Hwy. Richardson Springs Quadrangle, 7.5'. NE corner of * 76 Comment
  JEPS103459  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  UCD98405  Polycarpon tetraphyllum L. Ahart 1976-4-27 1148 Butte Along North Honcut Creek. Near Honcut. 45 Comment
  CDA13254  Polygala cornuta G. F. Hrusa, T. D. Wilfred 1996-7-8 13102 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET10493883  Polygala cornuta Mary Susan Taylor 1978-7-21 Taylor 1798 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CAS-BOT-BC167552  Polygala cornuta var. cornuta John Thomas Howell 1962-6-15 37473 Butte Magalia 731 Comment
  CAS-BOT-BC167554  Polygala cornuta var. cornuta C. R. Quick 1951-8-21 51 100 F Butte Near Lomo Junction Comment
  UC1562374  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte sw Forbestown Generator (on s side of reservoir); Forbestown Reservoir 487 Comment
  CHSC103722  Polygonum bidwelliae Lowell Ahart 2010-5-14 16658 Butte In the tracks of an old Road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC59121  Polygonum bidwelliae L. P. Janeway; B. Castro 1992-5-16 4186 Butte Unnamed canyon on southeast side of Neal Road opposite the entrance to the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. Bottom of slope on west side of dry creek. 68 Comment
  JEPS117518  Polygonum bidwelliae Lowell Ahart 2010-5-23 16730 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  UC519233  Polygonum bidwelliae J. E. Sowder 1933-6-2 1412 Butte 3 mi n Clear Creek; Chico Quad. 274 Comment
  UC1561016  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte road to Butte Meadows 3.2 mi ne Highway 32 1341 Comment
  RSA774143  Polygonum douglasii subsp. douglasii L. Ahart 2010-9-21 17210 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  UC1594564  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  NY323773  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  POM219114  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, by Butte Creek 1500 Comment
  CAS-BOT-BC419812  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 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
  CDA13842  Polygonum persicaria G. F. Hrusa, T. D. Wilfred 1996-9-5 13570 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC38619  Polygonum persicaria Vernon Oswald 1983-7-8 845 Butte Upper Bidwell Park, Chico, in the bed of Lindo channel near the flood-control weir. 79 Comment
  JEPS108863  Polygonum punctatum Lowell Ahart 2006-10-8 13428 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  UCR188565  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13069 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SEINET10970715  Polygonum punctatum Lowell Ahart 1991-9-14 Ahart 6714 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC24893  Polypodium calirhiza T. F. Burnham 1976-4-19 19 Butte Ca. 20 ft s of Butte Creek and 0.4 ft w of Covered Bridge, 6.4 mi e of Chico. 115 Comment
  CHSC28628  Polypodium calirhiza M. S. Taylor 1979-3-19 1930 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi n of Oroville. 487 Comment
  CHSC45  Polypodium calirhiza V. Holt 1935-3-28 Butte Fern Banks along Chico Creek. 60 Comment
  JEPS120173  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC38851  Polypogon interruptus Vernon Oswald 1983-5-8 448 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five-Mile Rec. Area and the flood-control gates. 79 Comment
  JEPS114961  Polypogon interruptus Lowell Ahart 2008-5-12 14741 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
  CHSC39521  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte Along the edge of the road, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC30551  Polypogon monspeliensis J. D. Jokerst; M. S. Taylor 1980-11-11 636 Butte Adjacent to rice fields. 50 ft N of Goodspeed-Watt Rd, 0.1 mi N of Nelson Rd (ca 6 mi S of Chico). Comment
  SEINET10530106  Polystichum Mary Susan Taylor 1980-4-1 Taylor 2420 A Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CHSC87884  Polystichum imbricans subsp. curtum Lowell Ahart 2004-6-22 11118 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CHSC90203  Polystichum imbricans subsp. curtum Lowell Ahart 2005-1-20 11474 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
  JEPS106114  Polystichum imbricans subsp. curtum Lowell Ahart 2004-6-22 11118 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CHSC13515  Populus fremontii J. Lee 1974-4-4 4 Butte Found at 484 Panama Ave., Chico. 76 Comment
  CHSC35698  Populus fremontii J. D. Jokerst 1982-5-1 1554 Butte Ca. 200 met E. Phantom Falls at the N Fork of Coal Cr. Canyon. Comment
  CHSC28613  Portulaca oleracea R. A. Schlising 1979-10-23 3491 -1 Butte SW of Chico and E of Orbend, at west margin of Butte County, at Sacramento River and Ord Ferry Road. Comment
  CHSC51243  Portulaca oleracea Lowell Ahart 1990-7-4 6549 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. 243 Comment
  CHSC65413  Potamogeton Vernon Oswald 1988-10-25 3718 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  SEINET10501686  Potamogeton crispus Mary Susan Taylor 1979-10-2 Taylor 2216 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CDA802  Potamogeton diversifolius L. Ahart 1999-6-12 8089 Butte Shallow water of a pond on the W side of the dam, large reservoir N of large reservoir N of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) W of the entrance gates along the W side of Cherokee Road, about 7 miles (air) N of Oroville. Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  CHSC38890  Potamogeton foliosus var. foliosus Vernon Oswald 1983-6-7 651 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  CHSC46982  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-28 4022 Butte Richardson Springs in the foothills ne of Chico. In a pool in the bed of the East Branch of Mud Creek just above the falls. 213 Comment
  SEINET11664887  Potamogeton natans L. P. Janeway 1987-1 2166 Butte along French Creek across from mouth of Ram Creek 617 Comment
  CHSC99668  Potamogeton pusillus var. tenuissimus R. A. Schlising; A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake. Growing totally submerged under about 2 m of water on a muddy ridge on rocky lake bottom. 1889 Comment
  CHSC45610  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  CHSC90472  Potentilla glandulosa subsp. glandulosa Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 430 Comment
  CHSC30296  Potentilla glandulosa subsp. reflexa M. S. Taylor 1980-5-27 2648 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC64213  Potentilla gracilis var. fastigiata S. C. Morey 1983-8-1 656 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC66305  Proboscidea louisianica subsp. louisianica Vernon H. Oswald 1996-6-20 7834 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing on the edge of a marshy drainage on the dry bed of seasonal marsh at the NW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC28927  Prunella vulgaris var. lanceolata M. S. Taylor 1978-7-21 1819 Butte On s side of Oroville-Quincy Hwy along creek, in a meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  CHSC21054  Pseudognaphalium luteoalbum M. S. Taylor 1975-4-25 503 Butte On Cohassett Hwy, ca. 1/2 mi n of Horse trough, ca. 20 mi ne of Chico. Comment
  HSC97095  Pseudognaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  CAS-BOT-BC357237  Pseudognaphalium microcephalum A. A. Heller 1916-9-23 12659 Butte Sierra foothills near Forest Ranch Comment
  CHSC45672  Pseudognaphalium stramineum Vernon Oswald 1988-5-2 3292 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 60 Comment
  CAS-BOT-BC357590  Pseudognaphalium stramineum Lowell Ahart 1987-5-6 5501 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC28612  Pseudognaphalium thermale M. S. Taylor 1979-8-4 2176 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC28697  Pseudognaphalium thermale M. S. Taylor 1979-9-9 1924 Butte Inskip on the Skyway. 1467 Comment
  CHSC25471  Pseudotsuga menziesii var. menziesii Marc Hayes; Warner 1977-9-11 66 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  CAS-BOT-BC361740  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113389  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte Depression on both sides 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
  SFV10343  Psilocarphus tenellus M. L. Vincent 1963-6-8 403 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  UC455450  Pterospora andromedea Miss Kate Conger 1907-1 Butte Brush Creek 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
  CHSC27182  Pyracantha crenulata M. MacArthur 1968-6-12 151 Butte NW side of LS bld. at the SW corner, Chico State College campus. 60 Comment
  CHSC38648  Pyracantha fortuneana Vernon Oswald 1983-5-22 525 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  JEPS119779  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18020 Butte South of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  JEPS93940  Pyrola dentata Vernon H. Oswald and Lowell Ahart 1998-8-11 9461 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Road 1463 Comment
  SEINET10449210  Pyrola picta subsp. integra Mary Susan Taylor 1977-8-17 Taylor 1483 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
  SEINET10874403  Pyrola picta subsp. integra Mary Susan Taylor 1980-8-2 Taylor 3215 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC45812  Quercus H. F. Copeland 1920-8-26 178 Butte near Jonesville 1219 Comment
  CAS-BOT-BC94695  Quercus X howellii John Thomas Howell 1955-6-15 30494 Butte 6 miles from Paradise on road to Pentz 426 Comment
  JEPS115052  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 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
  CAS-BOT-BC62691  Quercus chrysolepis John Thomas Howell 1962-6-15 37437 Butte Magalia 731 Comment
  SFV902  Quercus chrysolepis M. L. Vincent 1960-7-8 57 Butte Sierra Nevada Paradise. Across the road from 5330 Harrison Road. 515 Comment
  CAS-BOT-BC86114  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of Chico Comment
  UC1135634  Quercus garryana var. breweri C. G. Albertus 1933-7-1 39 Butte sw slope Promontory Pk.; Chico Quad. 1005 Comment
  UCD46725  Quercus kelloggii Franklin C. Raney 1964-10-10 s.n. Butte Ten miles northeast of Feather Falls, Butte County, California. Comment
  CAS-BOT-BC61584  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat in the Sacramento valley near Durham 68 Comment
  JEPS57370  Quercus lobata L. R. Heckard 1968-5-31 1932 Butte Bidwell Park Chico Comment
  POM187748  Quercus lobata C. Epling 1933-08 s.n. Butte Near Chico. Comment
  RSA87180  Quercus lobata E. E. Stanford 1930-6-15 1549 Butte Near Chico. Comment
  POM219009  Quercus vacciniifolia E. B. Copeland 626 Butte Jonesville. 1500 Comment
  CAS-BOT-BC104692  Quercus wislizeni Lowell Ahart 1979-5-12 s.n. Butte along bands of N Honcut Creek. Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC104694  Quercus wislizeni E. B. Copeland 1899-5-28 s.n. Butte unspecified Comment
  CHSC90107  Quercus wislizeni var. wislizeni Charlie Crannell 1991-4-22 3 Butte 50 ft south of where Honey Run Road crosses Butte Creek. 103 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
  CHSC46841  Ranunculus alismifolius var. lemmonii Kirsten Tarp 1983-8-12 353 Butte E of Philbrook Reservoir at county line. 1975 Comment
  CAS-BOT-BC379223  Ranunculus aquatilis var. aquatilis Lowell Ahart 1970-4-4 s.n. Butte Honcut, Peter Ahart Ranch 150 Comment
  CHSC33297  Ranunculus arvensis Keith A. Trujillo 1979-4-24 16 Butte 4 mi w of Paradise. 243 Comment
  CHSC43497  Ranunculus bonariensis var. trisepalus Lowell Ahart 1979-5-20 1883 Butte On the west side of the Western Pacific Railroad, about 2 miles south of Palermo. On the edge of a deep depression. 33 Comment
  CHSC23136  Ranunculus canus M. S. Taylor 1976-2-12 989 Butte Ca. 50 yds n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC52789  Ranunculus canus Vernon Oswald 1983-2-9 65 Butte Upper Bidwell Park, Chico, on the north slope n-w of Horseshoe Lake. 115 Comment
  CHSC52948  Ranunculus canus Vernon Oswald 1983-2-14 73 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. about 0.7 mi e of the power lines. 115 Comment
  UCD18745  Ranunculus canus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 38 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC84251  Ranunculus canus var. canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC52791  Ranunculus flammula R. Preston; R. A. Schlising 1982-8-26 4371 Butte N part of county, at Coon Hollow, n of Philbrook Reservoir. In margin of small lake. 1755 Comment
  POM99252  Ranunculus hebecarpus C. C. Bruce 1897-05 1889 Butte Iron Canyon Comment
  SEINET12094428  Ranunculus hebecarpus Unknown 1982-1 100 Butte Near Chico in Upper Bidwell Park, T22N, R2E, sec. 8 152 Comment
  HSC31873  Ranunculus muricatus David Johnson 1974-4-20 44 Butte Table Mtn. Comment
  SEINET10932409  Ranunculus muricatus Mary Susan Taylor 1975-4-26 Taylor 532 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
  SEINET12088566  Ranunculus occidentalis Unknown 1966-1 320 Butte ca 7 mi E Oroville at 6120 Woodleaf St. Rt., 300 yds off Feathervale, behind house 244 Comment
  CHSC23135  Ranunculus occidentalis var. occidentalis M. S. Taylor 1976-2-17 996 Butte Ca. 10 ft s of Big Chico Creek, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC24679  Ranunculus occidentalis var. occidentalis Keith Lickey 1976-3-27 48 Butte On e side of Hwy 70, 1.25 km n of Pinkston Canyon Rd. 609 Comment
  CHSC3554  Ranunculus occidentalis var. occidentalis Gary Dutton 1966-2-28 103 Butte Found in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. CSC. Comment
  CHSC11809  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. In meadows. 1550 Comment
  CHSC41517  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-5 325 Butte Ca. 1.0 mi sw of Jonesville on Humboldt Rd. at Colby Creek. Near stream in meadow. 1487 Comment
  CHSC9697  Ranunculus occidentalis var. ultramontanus Nancy Mosman 1971-7-3 51 Butte In a meadow on n side of Humboldt Road ca. 0.2 mi e of Butte Meadow Ranger Station. 1371 Comment
  POM268755  Ranunculus occidentalis var. ultramontanus Lyman Benson 1932-7-28 3968 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  JEPS98680  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SFV10378  Raphanus raphanistrum M. L. Vincent 1965-4-16 634 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  UC203587  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 mi n of Oroville Comment
  CAS-BOT-BC74264  Raphanus sativus A. A. Heller 1923-10-13 13828 a Butte Along the highway near Richvale. Comment
  SEINET13946291 Image available Rhamnus californica A. A. Heller 1915-1 11882 Butte Canyon of Chico creek 5 miles east of Chico Comment
  SEINET10903218  Rhamnus californica subsp. tomentella Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4100 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  RSA518961  Rhamnus purshiana C. R. Quick 1952-6-29 5192 Butte Near spring, 0.3 miles W of Coyote Gap on Mill Creek road Comment
  UC600525  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville Comment
  CHSC33718  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-4-8 3505 Butte Serpentine ridge on n side of logging landing site just w of power lines, off logging road ca. 0.5 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  CHSC37651  Rhamnus tomentella subsp. tomentella T. B. Devine 1981-8-25 753 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CHSC39786  Rhamnus tomentella subsp. tomentella Eloise Gallatin 1935-5-4 Butte Humboldt Road above Paradise. Comment
  POM86215  Rhamnus tomentella subsp. tomentella C. C. Bruce 1897-06 1808 Butte Little Chico. Comment
  UC870862  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-17 11882 Butte 5 mi e Chico; Canyon of Chico Creek Comment
  CDA14158  Rhododendron occidentale G. F. Hrusa 1997-6-27 13914 Butte Sierra Nevada; Banks of Fall River (not Shasta Co. Fall R.) at old Fall River Campground on USFS 24N94. 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
  CHSC19950  Rhus aromatica M. S. Taylor 1975-3-10 417 Butte Ca. 25 ft s of Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC38259  Rhus aromatica Vernon Oswald 1983-5-23 534 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 195 Comment
  CHSC61204  Rhus aromatica Lowell Ahart 1993-4-8 6929 Butte on east side of the gravel road, Oroville Wildlife Area, east of the Feather River, about 2 1/2 miles south of the Oroville Airport. 30 Comment
  UC203616  Rhus trilobata A. A. Heller 1914-3-19 11212 Butte canyon of Big Chico Creek 76 Comment
  CHSC78317  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  SD131005  Rhynchospora capitellata Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  CAS-BOT-BC92267  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Near DeSabla. Comment
  CHSC78079  Ribes nevadense Caleb E. Casey 1999-4-27 Butte Paradise Lake. Found on trail along shore. 777 Comment
  CDA13286  Ribes roezlii G. F. Hrusa, T. D. Wilfred 1996-7-9 13134 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC20960  Ribes roezlii M. S. Taylor 1975-9-12 909 Butte Ca. 500 ft w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  SBBG126087  Ribes roezlii L. Ahart 2012-2-22 17753 Butte S side of Ten Mi House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 387 Comment
  UC857965  Ribes roezlii A. A. Heller 1915-6-26 11031 Butte Summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  SEINET13942772 Image available Ribes roezlii A. A. Heller 2015-1 11970 Butte Chico Meadows in the Sierra Nevada, elevation 4000 feet in dry places. 1219 Comment
  CHSC38677  Ribes roezlii var. roezlii Vernon Oswald 1983-2-19 89 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near the turn-around at the e end of the park. 207 Comment
  SEINET13942865 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CDA34101  Romulea rosea var. australis L. Ahart 2009-3-25 15519 Butte Peter Ahart Ranch, about 0.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  JEPS32559  Rorippa Duncan Dunning 1921-7-30 Butte Butte Meadows Comment
  UCD115309  Rorippa curvisiliqua R. E. Preston 1996-4-30 931 Butte 4.5 miles north of Hamilton City, on gravel bar on the east side of the Sacramento River. 44 Comment
  CDA42871  Rosa californica L. Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path. Lower Bidwell Park. Comment
  JEPS115856  Rosa californica Lowell Ahart 2009-8-3 16264 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 239 Comment
  JEPS120080  Rosa californica Lowell Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path, Lower Bidwell Park, Chico. Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS94876  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  JEPS115693  Rosa pisocarpa Lowell Ahart 2009-5-30 15800 Butte South of a small stream, meadow, about 30 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 209 Comment
  RSA0005392  Rosa pisocarpa subsp. ahartii Barbara Ertter 2007-6-23 19074 Butte Black Bart Road. 1.3 miles from lower junction with Forbestown Road ca. 10 air miles ESE of Oroville. 655 Comment
  CHSC90308  Rosa rubiginosa L. P. Janeway 1994-9-29 4758 Butte Northern High Sierra Nevada. Northeast side of Quartz Hill; overlooking Quartz Creek and Fall River Campground. 1310 Comment
  CDA18368  Rotala indica G. D. Barbe 1978-8-14 2437 Butte Biggs Rice Experiment Station. 0 Comment
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Jun 11 2008
  CDA5117  Rotala indica L. Ahart 2000-10-15 8707 Butte Strand 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. Comment
  CDA37505  Rotala ramosior T. C. Fuller 1976-7-8 20146 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CHSC116725  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 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
  CHSC52471  Rubus armeniacus L. P. Janeway 1987-5-7 2028 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. 160 Comment
  POM366458  Rubus discolor L. Ahart, P. Ahart 1984-6-10 4716 Butte About 2 miles SW of Forbestown Diversion Dam. NE of Forbestown. 700 Comment
  CHSC40332  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of 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
  CHSC1600  Rubus parviflorus 1941-7-12 Butte Kimshew Falls, near Rag Dump 5, above Stirling. Comment
  CHSC23700  Rubus parviflorus M. S. Taylor 1976-5-5 1112 Butte Along creek, ca. 5 ft s of Hwy 70, ca. 20 me ne of Oroville. Comment
  SEINET11910947  Rubus parviflorus L. Ahart, Ahart, P. 1984-1 4695 Butte ca 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC24685  Rubus ursinus D. Hattem 1976-4-10 10 Butte Ca. 20 m ne of Chico Creek, ca. 10.2 mi ne of Chico. 304 Comment
  CHSC64049  Rumex acetosella S. C. Morey 1983-8-4 711 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA0035821  Rumex acetosella Lowell A. Ahart 2008-6-13 14831 Butte About 5 yards north of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC115154  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC90031  Rumex crispus Lesly Hess 2001-5-3 Butte Honey Run Bridge. Comment
  CHSC58270  Rumex dentatus Lowell Ahart 1992-5-23 6777 Butte Fallow rice field, on the west side of Goodspeed Watt Road, about 1/2 mile south of Butte City Highway. 30 Comment
  UCD149829  Rumex lacustris Harry A. George 1967-7-4 s.n. Butte E. of Cresta Power Station. Comment
  UCD101368  Rumex obtusifolius L. Ahart 1982-9-13 3807 Butte Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam. Ca. 2.2 mi. NW of Strawberry Valley. 1100 Comment
  CHSC116700  Rumex pulcher Lowell Ahart 2016-5-14 20828 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CAS-BOT-BC433781  Rumex pulcher John Thomas Howell 1959-9-20 34622 Butte Eastern outskirts of Oroville 60 Comment
  CHSC31547  Sagina apetala L. Ahart 1974-4-11 392 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35034  Sagina apetala R. A. Schlising; R. Banchero, J. Jokerst 1981-3-22 4007 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CHSC96487  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 63 Comment
  CHSC98975  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 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
  SEINET5337060  Sagina decumbens subsp. occidentalis B. Ertter, Jeffrey L. Strachan; L. Ahart 1980-5-7 3295 Butte Peter Ahart Ranch ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  CHSC80532  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  CAS-BOT-BC129902  Salix bonplandiana A. A. Heller 1914-3-21 11222 Butte Hills, 8 miles north of Oroville, below the Quercus Doutlasii belt. Comment
  CAS-BOT-BC129904  Salix bonplandiana John Thomas Howell; Gordon H. True 1967-5-9 42242 Butte Northwest side of Feather River Canyon near Pulga Bridge Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 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
  JEPS122277  Salix gooddingii Lowell Ahart 2014-4-9 19347 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC104082  Salix hindsiana C. R. Ball 1915-6-4 1945 Butte old river channel near Biggs Comment
  CHSC65019  Salix jepsonii Vernon Oswald 1988-6-20 3410 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  RSA0118770  Salix laevigata Lowell A. Ahart 2013-4-20 18552 Butte In Wilson Creek, about 100 yards southwest of the oak trees, about 0.5 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3.75 miles (air) northeast of Honcot. 50 Comment
  UC478540  Salix lasiandra subsp. lasiandra E. B. Copeland 1931-6-10 Butte Jonesville 1500 Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC3226  Salix lasiolepis Virginiga Hagaman 1966-3-14 67 Butte South end of Rock Creek bridge. Comment
  SEINET11957677  Salix lasiolepis Unknown 1987-1 5490 Butte along North Honcut Creek, 2.5 mi n and 3 mi e of Honcut, 12 mi SE of Oroville 67 Comment
  CAS-BOT-BC125949  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  CHSC107386  Sambucus mexicana Blake McSorley 2010-5-11 Butte Bidwell Park at Christer Ave. Found along Big Chico Creek. 71 Comment
  CHSC31030  Sambucus mexicana M. S. Taylor 1978-7-21 1809 Butte On S side of Oroville-Quincy Hwy. Ca. 14 mi N of Lake Madrone. 1463 Comment
  CHSC90240  Sambucus mexicana Robert Kissane 1989-4-22 15 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  UC1575631  Sambucus mexicana Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2095 Butte near Chico Comment
  CHSC8623  Sanicula bipinnata D. Patten 1968-3-4 59 Butte Collected 1 1/2 mi. se of Chico along Skyway. 91 Comment
  CHSC38745  Sanicula bipinnatifida Vernon Oswald 1983-2-19 90 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near Parking Area P (2.0 mi e of the power lines). 207 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
  JEPS113192  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir 637 Comment
  CHSC85626  Sanicula bipinnatifida var. flava Frances Kimball 1965-5-2 2667 Butte Cherokee Rd., 9.9 mi. E of California Rt. 70, between Oroville and Quincy; top of Table Mt.; gully, left bank. Comment
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  SEINET10939830  Sanicula crassicaulis Lowell Ahart 1984-4-3 Ahart 4540 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
  SEINET3240025  Santalaceae R. L. Mathiasen 2010-1 1036 Butte 0.8 km S of Colby Mtn. Lookout on forest rd. 27N36; 1750 Comment
  UCD117995  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  POM219177  Saxifraga californica H. F. Copeland 1928-4-3 328 Butte Canyon of Butte Creek. Comment
  CAS-BOT-BC111371  Schoenoplectus acutus var. occidentalis Lowell Ahart 1982-7-10 3674 Butte Gray Lodge, ca. 13 mi. SW of Gridley, 1/4 mile SE of the Gray Lodge Headquarters 35 Comment
  UCD49965  Schoenoplectus mucronatus Bellue 1947-9-11 s.n. Butte Afton Road, near Biggs. Comment
  CHSC42769  Schoenoplectus tabernaemontani Lowell Ahart 1987-8-3 5846 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC56812  Scirpus microcarpus L. P. Janeway 1987-6-19 2236 Butte Along Sly Creek 2.1 mi from Challenge-LaPorte Road along the road to the southeast side of Sly Creek Reservoir. 1097 Comment
  CHSC56813  Scirpus microcarpus L. P. Janeway 1987-7-4 2414 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  SEINET10466954  Scirpus mucronatus Mary Susan Taylor 1978-7-22 Taylor 1848 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC39494  Scutellaria californica Lowell Ahart 1983-6-21 4060 Butte Along Bloomer Hill Road, 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
  JEPS115658  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 436 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
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CHSC23467  Sedella pumila J. R. Lee 1974-4-22 3 Butte 15 yards n of the Skyway roadside ca. 6 mi se of the Chico city limits. 152 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
  CAS-BOT-BC416978  Sedella pumila W. J. Follett; E. B. Follett 1963-5-19 s.n. Butte 3.8 mi. W of Paradise on road to Chico Comment
  RSA32758  Sedella pumila A. A. Heller 1938-4-22 15042 Butte About 9 miles north of Chico along U, S. Highway 99E. Comment
  SD48510  Sedella pumila E. K. Balls 1957-5-23 22530 Butte 3.8 miles northeast of Pentz on road from Paradise. 455 Comment
  SEINET8472473  Sedella pumila M. J. Williams 1967-4-22 s.n. Butte Table Mtn., 5 miles from Cherokee. 396 Comment
  CAS-BOT-BC62123  Selaginella hansenii M. S. Taylor; K. Tharp 1983-3-12 5237 Butte Chico quad, along small rd off Stillson Canyon Rd (leading to Mannion Property), ca. 3 mi sse of Chico 152 Comment
  SEINET10530436  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2346 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CAS-BOT-BC69729  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte Brush Creek quad. On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork River. 441 Comment
  CHSC30295  Selaginella wallacei M. S. Taylor 1980-5-27 2666 Butte Big Bald Rock. 996 Comment
  CHSC30693  Selaginella wallacei M. S. Taylor 1980-5-27 2666 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 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
  CHSC76039  Senecio aronicoides G. F. Hrusa; T. D. Wilfred 1997-5-7 13741 Butte Sierra Nevada. At summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 750 Comment
  CHSC94036  Senecio aronicoides R. D. Fischer 2005-4-30 718 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy west facing slope. 518 Comment
  RSA201477  Senecio eurycephalus var. lewisrosei J. T. Howell 1962-6-16 s.n. Butte Magalia 732 Comment
  CHSC104757  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC30365  Senecio vulgaris J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 692 Butte Top of North Table Mt, 100 m E of the waterfalls of the S branch of Coal Cr. 365 Comment
  CHSC55479  Senecio vulgaris Dan Morgan 1991-4-14 4 Butte Skyway, 7.1 mi e of Chico from highway 99. 243 Comment
  CAS-BOT-BC364547  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  POM37335  Senecio vulgaris C. C. Bruce 2465 Butte Plains. Comment
  CAS-BOT-BC243563  Setaria parviflora M. S. Taylor 1977-11-10 1509 Butte Irrigation ditch on S side of Crauch Road, ca. 300 ft. W of its jct. with Lone Pine Ave. ca. 4 mi S of Chico 30 Comment
  CHSC117417  Setaria parviflora B. Castro 2008-7-15 1758 Butte Sacramento Vallye. 2 mi W of Hwy 99 and 1 mi SE of Richvale, at NE corner of Cherokee Canal and Richvale Hwy. At levee toe just up from rice field. 32 Comment
  RSA724851  Setaria parviflora L. Ahart 2006-9-28 13383 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
  CHSC66686  Setaria pumila Vernon H. Oswald; Lowell Ahart 1996-7-22 8086 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NW corner of Tract 9.1, Sanctuary I. 30 Comment
  CDA6643  Sherardia arvensis W. V. Johnson 1970-5-6 Butte 1680 Fresno Avenue, Oroville. 0 Comment
  CHSC84901  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7813 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  LA205920  Sidalcea asprella subsp. asprella C. L. Hitchcock; 1952-5-28 19536 Butte Oroville - Forbestown Road, about 8 mi. E of Oroville Comment
  CHSC29408  Sidalcea calycosa R. A. Schlising 1980-6-22 3753 Butte Several mi S of village of Cohasset. 441 Comment
  CHSC44071  Sidalcea calycosa John E. Hunter 1986-3-5 18 Butte Ca. 1 km e of Chico, 50 m s of Hwy. 32. 75 Comment
  CHSC90227  Sidalcea calycosa Michael J. McNairn 1989-4-17 5 Butte Ca. 100 yds. ne of jct. Lupin Ave. and Ceres Ave. ne Chico. 76 Comment
  SEINET10480000  Sidalcea calycosa Mary Susan Taylor 1984-4-6 Taylor 5404 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
  CHSC45942  Sidalcea diploscypha Lowell Ahart 1978-5-16 1735 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA0062304  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte About 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2.5 miles north and 2.5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 65 Comment
  CHSC42236  Sidalcea hartwegii Steve Holloway 1986-4-18 25 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  UC987698  Sidalcea hartwegii Roxana S. Ferris 1952-5-17 12482 Butte about 2 mi w Paradise (canyon of Butte Creek); , w of Paradisde 457 Comment
  SEINET10838742  Sidalcea hirsuta Mary Susan Taylor 1978-5-7 Taylor 1617 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  CHSC45556  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Near the edge of Ponderosa Way, about 1 1/2 miles south of the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  SEINET11931355  Silene antirrhina Unknown 1974-1 3137 Butte 9.9 mi NE of Chico, along Hwy32 Comment
  SEINET5337145  Silene californica M. J. Williams, W. Roderick 1984-5-25 84- 21 -4 Butte 3.3 miles from Paradise on Honey Run Road. 168 Comment
  CHSC24879  Silene laciniata subsp. californica P. Laherty 1976-4-4 6 Butte On n side of Ponderosa Way, ca. 10 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  CHSC32665  Silene lemmonii M. S. Taylor 1981-3-24 3436 Butte S side of Hwy 70, ca. 1/2 mi w of Cresta Powerhouse, ca. 1.5 mi e of Pulga. 487 Comment
  CAS-BOT-BC389290  Silene lemmonii Lowell Ahart 1983-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls 600 Comment
  SEINET7073605  Silene noctiflora A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road about 8 miles east of Chico. UTM Zone 10, 613369mE, 4399651mN. Coordinate datum: NAD27. Comment
  CHSC3658  Sinapis arvensis Robert D. Briggs 1966-3-15 R- 58 Butte 5 miles south of downtown Chico near hwy. U.S. 99E. Comment
  CHSC3759  Sinapis arvensis R. L. Adams 1964-4-12 74 Butte 4 mi. W. Chico, W. Sacramento Ave. and River Rd. on NE quarter. Comment
  SEINET10874424  Sisymbrium officinale Mary Susan Taylor 1974-4-28 Taylor 211 B Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  UC726206  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 2133 Comment
  UC436312  Smilacina racemosa E. B. Copeland July 1930 Butte Jonesville 1550 Comment
  RSA0118931  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. 244 Comment
  SEINET10546506  Solanum nodiflorum Mary Susan Taylor 1977-11-12 Taylor 1531 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC67398  Solanum parishii James D. Jokerst; R. A. Schlising 1985-4-8 2226 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  CHSC94492  Solidago elongata Lowell Ahart 2006-8-15 13193 Butte Grassy area on the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 miles (air) northwest of Jonesville, about 4 miles (air) northeast of Butte Meadows. 1516 Comment
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Nov 23 2007
  CAS-BOT-BC364936  Solidago velutina subsp. californica A. A. Heller 1916-9-9 12656 Butte Roadsides and fields near Durham Comment
  CAS-BOT-BC364941  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  CHSC45761  Solidago velutina subsp. californica Steven Triano 1988-9-18 251 Butte Ca 300 ft s of Nopel Avenue 0.4 mi se of its jct. with Hwy 32 in Forest Ranch. 713 Comment
  CAS-BOT-BC365841  Soliva sessilis Lowell Ahart 1989-5-10 6219 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 274 Comment
  CHSC111368  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. 79 Comment
  POM180916  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek. 1524 Comment
  CDA43079  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada.; Plumas National Forest; top of Bloomer Hill. Comment
  CHSC76432  Sorghum halepense Lowell Ahart 1999-10-28 8318 Butte On the east margin of the river, 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
  UCR188719  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13070 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SEINET8233922  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC49689  Sparganium emersum subsp. emersum Vernon Oswald 1987-6-23 3017 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. In a gravel pit. 1889 Comment
  CAS-BOT-BC389946  Spergula arvensis Lowell Ahart 1988-5-12 5989 Butte About 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  JEPS114711  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CAS-BOT-BC390131  Spergularia bocconi Lowell Ahart 1981-4-6 2743 Butte Sutter Buttes Region. West of the Gray Lodge Headquarters, about 8 miles southwest of Gridley 35 Comment
  UCD99237  Spergularia marina Bertha Chapman Cady 1921-6-3 s.n. Butte Chico. Comment
  UCD99249  Spergularia marina P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  JEPS108927  Spergularia rubra Lowell Ahart 2005-12-11 12512 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
  RSA0116394  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC28903  Sphenosciadium capitellatum M. S. Taylor 1978-7-18 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi W of Cherry Hill Campground. 1524 Comment
  CHSC42675  Sphenosciadium capitellatum Vernon Oswald 1985-8-4 1920 Butte Ca. 0.2 mi W of Humboldt Rd. at the bridge over Butte Creek S of Cherry Hill. 1414 Comment
  CHSC42676  Sphenosciadium capitellatum Vernon Oswald 1985-8-4 1920 Butte Ca. 0.2 mi W of Humboldt Rd. at the bridge over Butte Creek S of Cherry Hill. 1414 Comment
  RSA724890  Spiraea douglasii L. Ahart 2006-8-15 13184 Butte 10 yards W of Willow Creek. About 100 yards SE of the cabin. About 3/4 air mile NW of Jonesville. About 5 air miles NE of Butte Meadows. 1570 Comment
  CHSC59032  Spiranthes porrifolia Lowell Ahart 1992-8-2 6900 Butte On the west side of Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  SEINET10470128  Spiranthes porrifolia Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4045 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  UC600445  Stachys ajugoides var. rigida H. F. Copeland 1927-9-4 Butte Jonesville Comment
  UCLA70947  Stachys ajugoides var. rigida A. A. Heller 1928-7-15 14684 Butte Butte Meadows Comment
  CHSC43645  Stachys pycnantha B. Castro 1987-8-29 211 Butte Several feet from s edge of Butte Ck, ca 1/2 mi e of Hwy 99 crossing ca 2.1 mi s of Skyway in Chico. 68 Comment
  CHSC43646  Stachys pycnantha B. Castro 1987-9-12 219 Butte At w edge of Butte Ck, ca 24 mi ne of Chico via Hwy 32, Garland Rd and the Butte Ck Trail. On cliff ca 50' from water's edge. 585 Comment
  JEPS118641  Stachys pycnantha B. Castro and L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. Berry Creek 7.5' Quad. Comment
  RSA0039298  Stachys pycnantha Lowell Ahart 2008-7-23 15146 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
  SEINET10499270  Stachys pycnantha Lowell Ahart 1990-10-3 Ahart 6615 Butte Along the sides of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  POM181718  Stachys rigida subsp. rivularis H. F. Copeland 1927-4-9 104 Butte Jonesville. Comment
  CHSC46825  Stellaria crispa R. A. Schlising; P. F. Broyles 1988-7-3 4569 Butte SE of Stirling City near 'Rag Dump' area, where road crosses Fall Creek. 1158 Comment
  CHSC61638  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte On banks of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609008  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte about 1 mi se Butte Meadows (banks of Bolt Creek); Bolt Creek 1325 Comment
  CHSC41254  Stellaria longipes var. longipes S. C. Morey 1983-7-21 470 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1609331  Stellaria longipes var. longipes Lowell Ahart 1993-7-23 7111 Butte about 6 air mi ne Feather Falls (e side of Fall River, e of campgrounds on large gravel bar along Fall River); Fall River 1036 Comment
  CHSC111963  Stellaria media Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18112 Butte On the north side of Big Chico Creek, along the horse trail, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC115276  Stellaria media Lowell Ahart 2015-10-16 20089 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north or Oroville. Foothill Woodland. 304 Comment
  CHSC44489  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC46826  Stellaria obtusa R. A. Schlising; L. P. Janeway 1988-7-16 4602 Butte N part of county, NE of Butte Meadows and E of Scott John Creek; near Willow Creek. 1554 Comment
  RSA4441  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville, by Butte Creek 1500 Comment
  CHSC58905  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte In a meadow, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC113602  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CAS-BOT-BC375203  Stephanomeria elata Mary E. Wall 1935-11-10 s.n. Butte Paradise Comment
  CHSC46971  Stephanomeria exigua subsp. macrocarpa Lowell Ahart 1980-7-20 2470 Butte Along the edge of the abandoned paved road on the north side of the Suspension Bridge across Lake Oroville, north of Oroville. 304 Comment
  UC1609074  Stephanomeria lactucina Lowell Ahart 1993-6-26 7027 Butte about 1 mi w Lost Creek Reservoir (w side of dirt road); Mooreville Ridge 1188 Comment
  CHSC61773  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1993-8-31 5886 Butte Hwy. 70 at Cresta Rest (near the Butte-Plumas county line), along the PG and E service road to the falls on Bear Ranch Creek. On a bank near the bottom of the road. 457 Comment
  SD216  Stipa E. B. Copeland 1929-7-16 335 Butte Jonesville, scattered in low woods 1500 Comment
  SEINET10448512  Streptanthus campestris Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4187 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  JEPS108762  Streptanthus diversifolius Lowell Ahart 2006-5-3 12555 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 402 Comment
  UC725557  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  UCD164126  Streptanthus diversifolius N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 85 - Butte Table Mountain. 400 Comment
  CHSC47387  Streptanthus longisiliquus Lowell Ahart 1983-9-17 4434 Butte Along the edge of the dirt road, about 2 1/2 miles south of Stirling City. 1005 Comment
  CHSC33117  Streptanthus polygaloides M. S. Taylor 1981-5-21 3765 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC33179  Streptanthus polygaloides R. E. Preston 1981-6-2 76 Butte Ca. 100 m n of Bardee's Bar Rd., ca. 0.8 km from its jct with Big Bend Rd., ca. 24 km nne of Oroville. 670 Comment
  CHSC44382  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  CHSC48352  Streptanthus polygaloides Vernon Oswald 1985-4-21 1715 Butte Along the WPRR between Pulga and Dogwood Creek. 457 Comment
  CHSC93454  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  SEINET10448515  Streptanthus polygaloides Mary Susan Taylor 1981-5-21 Taylor 3765 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC48353  Streptanthus tortuosus Vernon Oswald 1985-5-28 1783 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. 1011 Comment
  UCD116315  Streptanthus tortuosus R. E. Preston 1996-5-22 937 Butte along Highway 70, 0.5 mile west of bridge at turnoff to Pulga. 512 Comment
  UCD116316  Streptanthus tortuosus R. E. Preston 1996-5-22 938 Butte along Highway 70, 0.1 mile west of access to Cresta Powerhouse. 457 Comment
  UCD164125  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 83 - Butte Table Mountain. 387 Comment
  SEINET10841529  Streptanthus tortuosus Mary Susan Taylor 1981-5-13 Taylor 3702 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  HSC96704  Streptanthus tortuosus var. orbiculatus L. P. Janeway, Matt Brown 2005-5-17 8391 Butte N High Sierra Nevada, Plumas National Forest, 0.3 km W of Cedar Creek, 2.6 km NNW of the mouth of Cedar Creek at N Fork Feather River 1295 Comment
  SEINET10448530  Streptanthus tortuosus var. pallidus Mary Susan Taylor 1973-1 Taylor 13 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  CHSC93504  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  UCD119111  Styrax redivivus W. R. Powell 1968-5-16 1502 Butte 3/4 mile northeast of Lake Wyandotte. 457 Comment
  POM219498  Symphoricarpos acutus H. F. Copeland 1928-8-14 97 Butte Jonesville, near Jones Creek. Comment
  CHSC23534  Symphoricarpos albus var. laevigatus M. S. Taylor 1976-3-9 1020 Butte Around Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  UC29849  Symphyotrichum bracteolatum H. E. Brown Nov 15 1896-Nov 30 1896 80 Butte near Clear Creek 53 Comment
  CAS-BOT-BC97690  Symphyotrichum chilense H. E. Brown 1896-9-15 80 Butte near Clear Creek 53 Comment
  CAS-BOT-BC98057  Symphyotrichum lentum John Thomas Howell 1961-9-22 36727 Butte Bank of Feather River, Oroville 53 Comment
  UCSB63840  Symphyotrichum spathulatum Ahart, Lowell 1997-8-1 Butte Little Kinshew Creek, in Snow Meadow, about 1/4 mile east of table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC69037  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 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
  JEPS121906  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-7-16 19690 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS94309  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, near some small streamlets of Little Kimshew Creek in Snow Meadow); Snow Meadow 1524 Comment
  CAS-BOT-BC98375  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1977-9-24 s.n. Butte Peter Ahart Ranch, Honcut, along edges of North Honcut Creek 50 Comment
  CHSC50403  Symphytum officinale Vernon Oswald 1990-6-10 4286 Butte Hwy 32 at Lomo (jct. Humboldt Rd to Butte Meadows). At the base of a bank on the west edge of the pullout on Hwy 32. 1158 Comment
  CAS-BOT-BC376822  Tanacetum vulgare M. S. Taylor 1982-8-16 4992 Butte S end of Stirling City along both sides of the Skyway 1036 Comment
  SEINET11793729  Taraxacum officinale Unknown 1966-1 37 Butte Chico, East 5th & Olive Streets Comment
  UC106147  Tauschia hartwegii Mrs. R. M. Austin Mar. 1896 Butte Little Chico Creek Comment
  UC1246758  Tauschia hartwegii Howard Scott Gentry and Steve