Search Results — 2000 specimen records retrieved (1618 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26468  Abelia X grandiflora Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CHSC45327  Abutilon theophrasti Vernon Oswald 1987-9-7 3233 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. 48 Comment
  UC600815  Acer glabrum var. glabrum H. F. Copeland 1932-7-16 Butte ridge w of the summit Jonesville Comment
  SD2927  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 Butte Jonesville 2100 Comment
  CHSC81448  Acer macrophyllum Sabrina Wright 2000-4-18 Butte North of Chico, Skyway to Coutolenc Rd to Lucretia Rd. Approximately 50 ft from edge of water. 914 Comment
  CHSC3211  Acer negundo Susan Carrauthers 1966-6-18 159 Butte Next to nurses cottage beside the Chico State College football field on Warner St. City of Chico. Comment
  CHSC27204  Acer palmatum P. Moyer 1971-10-8 43 Butte CSUC Campus. Front lawn Admin. Bldg. 60 Comment
  CHSC63803  Achillea millefolium S. C. Morey 1983-7-28 634 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC103109  Achnatherum lemmonii Lowell Ahart 2009-5-30 15796 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC89015  Achnatherum lemmonii A. Peterson 2003-5-6 76 Butte Southeast of Chico, Hwy 70 road shoulder, about 2 1/2 miles sw of bridge over north fork of Feather River. 609 Comment
  CHSC31213  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  RSA718380  Achnatherum stillmanii L. Ahart 2006-6-24 12852 Butte On the east side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1131 Comment
  CHSC99484  Achnatherum thurberianum Lowell Ahart; John Dittes 2008-6-19 14870 Butte Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
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Oct 5 2019
  CHSC3811  Achyrachaena mollis L. E. Dunkel 1965-3-30 10 Butte Along Pentz Road ca. 1 mi e of junction with Clark Road. 45 Comment
  POM30563  Achyrachaena mollis C. C. Bruce 1897-05 s.n. Butte [No locality information provided] Comment
  CHSC109632  Acmispon americanus var. americanus Lowell Ahart 2013-5-20 18103 Butte Where the Humboldt Trail comes out to the old road and Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 398 Comment
  CHSC28528  Acmispon americanus var. americanus M. S. Taylor 1979-8-4 2171 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  JEPS121914  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC33115  Acmispon brachycarpus M. S. Taylor 1981-5-14 3734 Butte N side of Feather River Hwy 70 at Plumas NF boundary sign, ca. 2 mi ne of Jarbo Gap. 609 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC90225  Acmispon parviflorus Eric M. Haney 1989-4-23 11 Butte Found on e side of Hwy 32, ca. 7.5 km s of Forest Ranch. Ridge top. Comment
  CHSC98960  Acmispon parviflorus Lowell Ahart 2008-5-12 14733 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
  JEPS119582  Acmispon strigosus Lowell Ahart 2012-4-17 17879 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  UC1594727  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte ca. 2 (air) mi. n Snow Mt. (ca. 1/2 mi. n. of Carr Mine) 1767 Comment
  CAS-BOT-BC391378  Aconitum columbianum subsp. columbianum Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CAS-BOT-BC412867  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville 2100 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  SEINET7728118  Adiantum emarginatum C. C. Parry 1883-1 Butte Little Chico Canyon Comment
  UCD51548  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC90077  Aesculus californica Elizabeth A. Ballou 1991-4-23 7 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  CHSC20524  Aesculus pavia Pamela Caldwell 1972-4-9 Butte CSUC campus. NW corner of Auditorium. Comment
  CHSC31934  Ageratina occidentalis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1038 Butte Top of Humboldt Peak, ca. 200 met N of summit, northern most portion of Butte Co. 2133 Comment
  CHSC33946  Ageratina occidentalis M. S. Taylor; L. Ahart 1981-8-16 4206 Butte N side of 25N04, near upper Big Kemshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1950 Comment
  CHSC61626  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte On the top of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CDA34629  Agoseris grandiflora L. Ahart 2009-6-19 15918 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
  UC600721  Agoseris retrorsa E. B. Copeland 1931-7-12 Butte (Ridge between Jones and Willow Creeks) Jonesville 1700 Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC75420  Agrostis avenacea Lowell Ahart 1999-6-12 8088 Butte Large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  CAS-BOT-BC127326  Agrostis exarata Lowell Ahart 1982-9-13 3823 Butte Near Pinkard Creek. Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  RSA724996  Agrostis exarata L. Ahart 2006-9-11 13301 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
  CHSC59034  Agrostis exarata var. exarata Lowell Ahart 1992-8-2 6907 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC40906  Agrostis gigantea Lowell Ahart 1985-11-7 5235 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC96787  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  UC392236  Agrostis idahoensis E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC59035  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  UCD53348  Agrostis scabra A. A. Heller 1914-8-6 11647 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC138422  Aira caryophyllea Lowell Ahart 1980-5-4 2165 Butte Thermalito. 65 Comment
  CAS-BOT-BC138344  Aira caryophyllea var. caryophyllea John Thomas Howell 1962-6-16 37550 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC30021  Aira elegans L. Ahart 1980-5-4 2174 Butte South-west of the intersection of Nelson Ave. and 20th St. in Thermalito. 65 Comment
  SEINET10869149  Aira elegans Mary Susan Taylor 1980-3-1 Taylor 2351 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
  CHSC76010  Alisma triviale Lowell Ahart; Vernon H. Oswald 1999-8-13 8138 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
  CHSC96091  Alisma triviale L. P. Janeway 2006-7-19 8817 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CAS-BOT-BC131910  Allium John Thomas Howell 1955-6-14 30437 A Butte At Magalia 731 Comment
  SEINET10471915  Allium Mary Susan Taylor 1980-4-27 Taylor 2575 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC38761  Allium amplectens Vernon Oswald 1983-4-4 277 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 146 Comment
  CHSC96559  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  JEPS82253  Allium amplectens Roger Raiche 1983-4-13 30188 Butte slope above Honey Run Covered Bridge (Honey Run Road) Comment
  SEINET7072746  Allium amplectens A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles northeast of Oroville on Route 10 [Mountain Boulevard]. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 619496mE, 4380367mN. Coordinate datum: NAD 27.) Comment
  UCD73057  Allium amplectens 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
  SEINET12039538  Allium amplectens E. D. Osman 1978-1 27 Butte 20 mi NNE of Chico and 200 yds N of Cohasset Hwy 975 Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  CHSC2065  Allium cratericola V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  CHSC3533  Allium cratericola John Francis 1966-3-28 89 Butte Table Mt. Comment
  HSC66340  Allium cratericola M. S. Taylor, Jim Jokerst 1980-4-27 2563 Butte Table Mtn. 5 mi. N of Oroville 610 Comment
  RSA0000114  Allium cratericola C. C. Bruce 1897-04 1907 Butte Yankee Hill. Comment
  SEINET12046120  Allium cratericola Unknown 1978-1 8 Butte N side Cherokee Rd., ca 5.8 mi E jct Hwy. 70 and Cherokee Rd., 12.5 mi N Oroville. Oroville Quadra 396 Comment
  CHSC74029  Allium membranaceum B. Castro; Plumas NF botanists 1997-6-13 743 A Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  SEINET6225024  Allocarya greenei L. S. Rose 1967-1 67056 Butte Oraville, Comment
  JEPS104414  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the n side of Ponderosa Reservoir, ca 1 1/2 mi (air) e of the Ponderosa Dam. 331 Comment
  SEINET10935987  Allophyllum divaricatum Lowell Ahart 1991-6-22 Ahart 6662 Butte Below the high water line of Lake Oroville, north of Springtown Road, Lake Oroville. Foothill Woodland (destroyed). T19N R5E SE/S2. 244 Comment
  UC398943  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville Comment
  CHSC46714  Alopecurus aequalis V. Oswald; L. Ahart 1989-8-22 3957 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  SEINET10868886  Alopecurus carolinianus Lowell Ahart 1990-6-16 Ahart 6517 Butte Along Mccabe Creek below the high water line of Lake Oroville about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S7. Foothill woodland (destroyed). 244 Comment
  CDA31388  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville Comment
  CDA34706  Alopecurus saccatus L. Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  SEINET10511195  Alopecurus saccatus M. E. Banning 1969-4-18 Banning 76 Butte Table Mt., 1/2 mi. from Ore. City junction. 488 Comment
  JEPS122252  Amaranthus californicus Lowell Ahart 2014-9-23 19880 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC89437  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  CAS-BOT-BC55583  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico Comment
  CAS-BOT-BC142951  Amelanchier utahensis A. A. Heller 1915-6-11 11963 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SEINET10452827  Ammannia auriculata Mary Susan Taylor 1978-7-22 Taylor 1851 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CDA36704  Ammannia coccinea L. 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. Comment
  CHSC46876  Ammannia robusta Vernon H. Oswald 1989-9-4 3976 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  JEPS87378  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CDA42886  Amorpha californica L. Ahart 2012-5-12 18027 Butte North side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  SEINET12327001  Amsinckia Unknown 1984-1 10 Butte ca 0.5 mi E on Wildwood Ave, 500 ft N from Wildwood, E side of road 70 Comment
  CHSC96552  Amsinckia lycopsoides L. P. Janeway 2006-4-30 8561 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC3312  Anagallis arvensis M. Gregg 1966-3-21 52 Butte On Pentz Rd. approx. 1 mile east of Clark Rd. At a pond at the foot of the hill. 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
  POM147728  Antennaria argentea E. E. Stanford 1927-5-21 381 Butte 4 miles SE of Avery 1220 Comment
  CHSC75972  Antirrhinum cornutum Lowell Ahart; Vernon H. Oswald 1999-8-13 8130 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
  CHSC71263  Antirrhinum leptaleum Lowell Ahart 1998-7-1 8032 Butte 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC115363  Aphyllon purpureum Lowell Ahart 2015-3-14 19955 Butte On steep basalt slope, on the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 302 Comment
  CHSC106235  Apocynum cannabinum L. P. Janeway 2010-8-21 10171 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northeast end of Upper Park Road, northwest side of Big Chico Creek. On a gravel bar. 204 Comment
  CHSC38261  Apocynum cannabinum Vernon Oswald 1983-8-19 1009 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  JEPS108968  Apocynum cannabinum Lowell Ahart 2006-9-11 13272 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  RSA725004  Apocynum cannabinum L. Ahart 2006-9-11 13272 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
  CHSC114947  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville about 1/4 mile north of Miners Ranch Reservior, about 4 miles East of Oroville. 218 Comment
  CHSC45038  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte Host trees were on both sides of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 air miles south-west of Bald Mountain. 1005 Comment
  SEINET1912948  Arceuthobium californicum R. L. Mathiasen 2010-1 1065 Butte 0.8 km S of Colby Mtn. Lookout on forest rd. 27N36 1750 Comment
  CHSC4596  Arctostaphylos C. Glascock 1965-2-27 200 Butte Ca. 15 yds. N of corner of Meadowview and Oro-Quincy Hwy., 2 mi E of Oroville. 36 Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52247  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51565 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52250  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51567 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52255  Arctostaphylos manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51542 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  CAS-BOT-BC38827  Arctostaphylos manzanita subsp. manzanita Lewis S. Rose 1945-5-12 45033 Butte Richardson Springs 304 Comment
  CAS-BOT-BC38865  Arctostaphylos manzanita subsp. manzanita Frances Brown 1935-2-11 s.n. Butte Durham Comment
  CAS-BOT-BC38871  Arctostaphylos manzanita subsp. manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51541 Butte In foothill woodland south of Chrokee on road to Oregon City. Comment
  RSA178607  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte Near Forest Ranch Comment
  CAS-BOT-BC38560  Arctostaphylos mewukka subsp. truei Wayne Roderick 1981-7-19 s.n. Butte 3 mi. NE of Magalia. Comment
  CAS-BOT-BC38574  Arctostaphylos mewukka subsp. truei W. K. Fisher 1899-1-1 s.n. Butte Berry Creek. Comment
  CAS-BOT-BC38610  Arctostaphylos mewukka subsp. truei A. A. Heller 1949-2-6 15490 Butte Neal Road at Paradise in the game refuge. Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 air mi W of Elks Retreat. 1310 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
  CAS-BOT-BC45573  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  CHSC48372  Arctostaphylos nevadensis Vernon Oswald 1983-8-17 994 Butte On Humboldt Peak, NE of Jonesville. 2158 Comment
  POM193357  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC34804  Arctostaphylos patula M. S. Taylor 1980-5-8 2602 Butte Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32. 853 Comment
  UCD51951  Arctostaphylos truei John Thomas Howell 1975-6-15 51112 Butte 609 Comment
  UCD52616  Arctostaphylos viscida John Thomas Howell 1975-6-15 51101 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET10973472  Arctostaphylos viscida Mary Susan Taylor 1981-3-31 Taylor 3456 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CAS-BOT-BC47391  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-5 s.n. Butte Near Honcut. 36 Comment
  CAS-BOT-BC48292  Arctostaphylos viscida subsp. viscida John Thomas Howell; Lowell Ahart 1976-4-1 51540 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  JEPS119508  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  JEPS98293  Aristida dichotoma Lowell Ahart 2000-6-27 8519 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC26759  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On the s side of Pentz Rd. Ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC45202  Aristida oligantha Lowell Ahart 1977-7-14 1465 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD56450  Aristida oligantha L. Ahart 1977-7-14 1464 Butte Honcut, Peter Ahart Ranch. 50 Comment
  CHSC30863  Aristolochia californica J. D. Jokerst 1979-3-23 1159 Butte Top of North Table Mt., W edge of Mt, immediately N of the waterfalls of the S fork of Coal Cr Canyon. 365 Comment
  UCD170558  Aristolochia californica D. O. Burge 2017-8-25 2286 Butte Butte Creek. 220 Comment
  SEINET10475904  Aristolochia californica Mary Susan Taylor 1981-3-24 Taylor 3442 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
  CAS-BOT-BC82110  Arnica chamissonis A. A. Heller 1928-7-25 14701 Butte Butte Creek House Comment
  UC171426  Arnica dealbata A. A. Heller 1913-6-7 10824 Butte near Stirling (West Branch of the North Fork of the Feather River); North Fork of the Feather River 914 Comment
  CAS-BOT-BC90289  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  SEINET10872091  Artemisia douglasiana Mary Susan Taylor 1975-10-29 Taylor 976 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. 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
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC3347  Asclepias cordifolia Robert L. Smith 1966-4-4 75 Butte Salmon Hole, 6 miles NE of Chico. Little Chico Creek. Comment
  UC166407  Asclepias cordifolia Mrs. R. M. Austin May 1896 287 Butte Little Chico Creek Comment
  UCD121302  Asclepias eriocarpa E. M. Johnston 1915-8-1 78 J Butte Biggs. Comment
  CHSC6611  Asparagus officinalis M. MacArthur 1968-6-17 296 Butte SW yard of Building D on the Chico State College Campus. 60 Comment
  CHSC23404  Aspidotis californica M. S. Taylor 1976-3-6 1008 Butte Above Macabes Creek, ca. 50 ft e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC23658  Aspidotis californica M. S. Taylor 1976-4-24 1073 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
  CHSC24899  Aspidotis densa P. Laherty 1976-4-4 19 Butte Scattered on the n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC38247  Aspidotis densa Vernon Oswald 1983-6-14 681 Butte Upper Bidwell Park, Chico, at Bear Hole. 97 Comment
  SEINET10470239  Aspidotis densa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4736 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CDA10332  Aster oregonensis subsp. californicus T. C. Fuller 1962-7-12 9162 Butte East side of Pentz-Magalia Road just south of Merrill Road, 1.2 miles south of Magalia. 0 Comment
  CHSC69444  Aster radulinus Lowell Ahart 1997-9-6 7892 Butte About 1 1/2 miles north of Oakway, about 3 miles (air) northwest of Flea Mountain, about 3 miles (air) northeast of Sawmill Peak, about 5 miles (air) north of Concow Reservoir. 762 Comment
  CHSC109163  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC33696  Astragalus gambelianus L. Ahart 1981-4-9 2751 Butte Near North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  UC625529  Astragalus pauperculus Frank W. Gould 1938-4-23 316 Butte two mi n Chico; n of Chico 60 Comment
  RSA725005  Athyrium filix-femina subsp. cyclosorum L. Ahart 2006-9-11 13271 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC68688  Athyrium filix-femina var. californicum Lowell Ahart 1985-7-24 5149 Butte East of the dirt road to the Frobestown Res., 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC25288  Athyrium filix-femina var. cyclosorum M. S. Taylor 1977-7-15 1422 Butte On w branch of the Feather River, ca. 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  UC474218  Athyrium filix-femina var. cyclosorum H. F. Copeland 1928-8-18 1017 Butte neighborhood of Jonesville (woods near Butte Creek) 1600 Comment
  CHSC19918  Athysanus pusillus M. S. Taylor 1975-3-3 398 Butte Ca 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 60 Comment
  CHSC476  Athysanus pusillus G. Spurlock 1935-4-7 Butte Covered bridge on Butte Creek. Comment
  CHSC34772  Atriplex rosea Lowell Ahart 1981-11-6 3220 Butte Near the entrance to the Gray Lodge Waterfowl Mangement Headquarters, just west of Pennington Road, about 12 miles south-west of Gridley. 35 Comment
  CAS-BOT-BC146180  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC4394  Avena barbata R. L. Smith 1966-5-15 Butte Paradise, 5 mi sw of Post Office. Comment
  CHSC101803  Avena fatua Lowell Ahart 2009-5-8 15665 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC94976  Baccharis salicifolia Lowell Ahart 2006-10-12 13503 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  SD122583  Baccharis salicifolia Lowell Ahart 1984-10-14 4814 Butte North Honcut Creek, ca. 3/4 miles north and 2 miles east of Honcut, on Joie Osgood property. 39 Comment
  CHSC4672  Balsamorhiza deltoidea R. Carter 1966-4-11 335 Butte Found ca. 1 mi E of Bidwell Bar along RR tracks, just W of RR bridge over S Fork. 152 Comment
  JEPS87167  Balsamorhiza deltoidea Vernon H. Oswald and Lowell Ahart 1992-3-24 4891 Butte Thermalito Diversion Pool Lake Oroville Recreation Area (n side, along the first stream w of spillway and ca 2.0 mi n of Burma Rd.) 76 Comment
  CHSC109109  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-3 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. 387 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  JEPS108975  Bidens frondosa Lowell 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 431 Comment
  UCD169273  Bidens frondosa Lowell Ahart 2013-11-17 19259 Butte McCabe Creek, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  SEINET10872129  Bidens frondosa Mary Susan Taylor 1982-8-14 Taylor 5139 Butte T20N R8E. Jct of French Creek and 21N56, 0.5 mi e of Mooretown Ridge Rd, ca. 3 mi n of Sly Creek Reservoir Dam, ca. 4 air mi n of Strawberry Valley. 4000 ft. 1219 Comment
  SEINET10938147  Bidens frondosa Lowell Ahart 1985-11-7 Ahart 5238 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CAS-BOT-BC412957  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  SEINET10904923  Blennosperma nanum Mary Susan Taylor 1974-3-5 Taylor 77 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CAS-BOT-BC100687  Blennosperma nanum var. nanum A. A. Heller 1914-2-16 11180 Butte Hills twelve miles from Chico on the Chico-Oroville Road Comment
  CHSC109135  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte On the north side of a very large basalt outcrop, about 400 yards east of Big Chico Creek, about 100 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CAS-BOT-BC16035  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-3-18 0176 Butte Upper rimrock south of Big Chico Creek. Comment
  POM253281  Boisduvalia densiflora A. A. Heller 1938-5-28 15109 Butte Along the Oroville road near Wick s Corner Comment
  SEINET12194591  Boisduvalia densiflora Unknown 1985-1 5058 Butte Lumpkin Ridge, 1-1/2 mi E of Camp 18, about 8 mi NE of Feather Falls 975 Comment
  SEINET10973129  Boisduvalia glabella Mary Susan Taylor 1980-6-29 Taylor 2992 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  POM225863  Boisduvalia macrantha J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC34780  Bolboschoenus maritimus subsp. paludosus L. Ahart 1981-11-6 3226 Butte Small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UC478552  Botrychium simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  CHSC71652  Boykinia major Vernon H. Oswald; Lowell Ahart 1998-8-11 9463 Butte USFS 25N95 to Upper Wildcat Creek 0.7 mi north of Four Trees-Coyote Gap Rd. 1408 Comment
  CHSC51917  Boykinia occidentalis L. P. Janeway 1987-6-20 2275 Butte Near Fall River, along rd to Fall River and Cascade 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. 1013 Comment
  CAS-BOT-BC145680  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1/8 mile west of Oroville Quincy Highway, 1.25 mile south of the Berry Creek School. Northeast of Oroville, section 5. 400 Comment
  JEPS115997  Brachypodium distachyon Lowell Ahart 2009-6-3 15821 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  SEINET10448435  Brassica geniculata Mary Susan Taylor 1975-10-29 Taylor 974 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  SEINET10448436  Brassica geniculata Lowell Ahart 1985-7-24 Ahart 5157 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. Comment
  CHSC38022  Brassica nigra R. E. Preston 1982-4-4 218 Butte On bank of levee; on s side of Rutherford Rd, ca. 0.7 mi w of Pennington Rd, Gray Lodge State Wildlife Area. 21 Comment
  CHSC110132  Brassica rapa L. P. Janeway 2012-3-30 10803 Butte Sacramento Valley. West side of Hwy 99 1.6 km south of Estates Drive, south edge of Chico. 60 Comment
  CAS-BOT-BC106321  Brickellia californica M. S. Taylor 1979-10-28 2197 Butte Butte Conty line at Hwy 70 (Feather River Hwy), between boundry and Arch Rock tunnel. 487 Comment
  RSA724877  Brickellia californica L. Ahart 2006-9-11 13335 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
  CAS-BOT-BC145532  Briza minor A. A. Heller; H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC145537  Briza minor Lowell Ahart 1980-5-17 2279 Butte 0.5 mile southeast of Hurleton. 600 Comment
  RSA385271  Briza minor M. M. Boney 1897-1 1924 Butte [No locality information provided] Comment
  RSA715855  Briza minor L. P. Janeway 2005-3-10 8346 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  SEINET10514397  Briza minor A. Arthur Heller 1913-5-25 Heller 10762 Butte Near Pents. 152 Comment
  SEINET194960  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte In fields near the Chico airport. Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  UC768737  Brodiaea californica var. californica R. F. Hoover 1937-5-18 2233 Butte 2 mi n Chico Comment
  UC1442862  Brodiaea coronaria subsp. coronaria Theodore F. Niehaus 1967-4-12 741 Butte Plumas Ave and 14th Street (along road and parking lot of Grocery Store Junction, nw Oroville); Oroville Comment
  UC768717  Brodiaea coronaria subsp. coronaria R. F. Hoover 1937-5-19 2246 Butte 10 mi nw Chico Comment
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Jun 17 2014
  CHSC21147  Brodiaea elegans M. S. Taylor 1975-6-30 819 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Green wood Store, Cohasset. 853 Comment
  CHSC90224  Brodiaea elegans subsp. elegans Robert Kissane 1989-5-12 2 Butte East side of Bruce Road, ca. 500 m s of Humboldt Road, Chico. 80 Comment
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Jun 17 2014
  CHSC42231  Brodiaea minor David B. Andreas 1986-4-20 18 Butte Ca. 5 m from roadside junction Hwy 99 and Broyles Rd. 18 km nw of Chico. 61 Comment
  CHSC46856  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-9 4575 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CAS-BOT-BC484556  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Sioerra Nevada at Butte Meadows 1219 Comment
  HSC38058  Brodiaea minor Thomas W. Nelson, Jane P. Nelson 1976-5-10 2465 Butte Beside SR 191 just N of its junction with SR 70 Comment
  SD48511  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte On drying clay and open grassland, U.S. Highway 99, 1.7 miles northwest from junction with road from Pentz. 91 Comment
  SEINET10534141  Brodiaea purdyi Lincoln Constance 1941-5-28 Constance 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills. Thin gravelly soil of open flat, with Linanthus, Polygonum, Lotus and Godetia, Quercus douglasii-Pinus douglasii-Pinus sabiniana belt, 1000 feet. Comment
  RSA325953  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut. Along the edges of N Honcut Creek. 50 Comment
  UCD78203  Brodiaea sierrae Robert E. Preston 2004-6-19 2260 Butte 1 mi NNE of Magalia, 250 ft S of Jordan Hill Rd where it crosses North Fork of the West Branch of the Feather River 486 Comment
  SEINET3441874  Bromus arvensis Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte Chico, Chico, 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 120 Comment
  RSA718343  Bromus carinatus L. Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardes Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  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
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC34209  Bromus carinatus var. marginatus J. D. Jokerst 1981-8-1 1452 Butte N face of Humboldt Peak ca 200 feet NE of summit. Extreme N corner of Butte county. 2133 Comment
  CAS-BOT-BC156296  Bromus caroli-henrici Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, Honcut. Peter Ahart Ranch, about 1 mile north and 0.25 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  CHSC4369  Bromus diandrus M. Hillier 1966-5-30 Butte By creek at s end of Park Ave., Chico. Comment
  JEPS117561  Bromus hordeaceus Lowell Ahart 2010-6-20 16816 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 Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 64 Comment
  CHSC96861  Bromus japonicus Lowell Ahart 2007-6-3 13976 Butte On the west 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
  CHSC87956  Bromus laevipes Lowell Ahart 2004-6-22 11109 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  JEPS115305  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  CHSC49517  Bromus orcuttianus Vernon Oswald 1985-7-2 1874 Butte Hwy 32 2.3 mi s of Lomo. Logged area. 1133 Comment
  CAS-BOT-BC161503  Bromus tectorum Javier Penalosa 1962-6-18 2463 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CHSC111360  Callitriche marginata Lowell Ahart 2012-5-4 17989 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 Comment
  CHSC3593  Calocedrus decurrens Susan Carrauthers 1966-2-22 18 Butte Table Mountain Golf Course (9th Hole). Ca. 5 mi E. of highway 99E. On Oroville Lateral Road. S. W. of city of Oroville. Comment
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Aug 28 2018
  CHSC40593  Calocedrus decurrens Lowell Ahart 1985-9-18 5168 Butte About 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 914 Comment
  RSA377250  Calochortus albus M. Vincent 1962-4-16 200 Butte One mile W of Paradise on Honeyrun Rd. Butte Creek Canyon. Comment
  UC565379  Calochortus albus Helen Hedges 1937-5-22 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  CAS-BOT-BC487514  Calochortus albus A. A. Heller; H. E. Brown 1902-5-7 5484 Butte Berry Canyon (Near Clear Creek) Comment
  JEPS123914  Calochortus albus var. albus Lowell Ahart 2015-4-27 20086 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  HSC66348  Calochortus leichtlinii M. S. Taylor, Jim Jokerst, L. Ahart 1980-8-2 3208 Butte Humboldt Peak, top and W side trail 2155 Comment
  JEPS117716  Calochortus luteus Lowell Ahart 2010-6-1 16758 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico 144 Comment
  SEINET12048525  Calochortus luteus S. M. Schulz 1978-1 19 Butte ca 2 mi NE Chico on Humboldt Rd, ca 5 yds S of road 76 Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  SEINET3992462  Calochortus maculatus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  CHSC2240  Calochortus monophyllus M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC2832  Calochortus monophyllus David Prall 1965-4-16 21 Butte Growing along Helltown Canyon Rd. 1 mile north from Humbug Rd. 228 Comment
  CHSC81581  Calochortus monophyllus 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
  CHSC9277  Calochortus monophyllus D. C. Burns 1971-4-2 112 Butte Few plants on n side of Cohasset rd., ca. 1.3 mi w of intersection of Cohasset rd. and Vilas rd. 487 Comment
  UC311628  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 213 Butte near Paradise (in the lower Sierra Nevada); Sierra Nevada 600 Comment
  UC3375  Calochortus monophyllus Carl Purdy 1821-1 Butte Chico Comment
  POM169425  Calochortus monophyllus Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET10872530  Calochortus monophyllus Mary Susan Taylor 1981-4-27 Taylor 3558 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 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
  CHSC34487  Calochortus superbus J. D. Jokerst; R. A. Schlising 1979-5-18 245 Butte Sides of Cherokee Rd, 3.0 mi S of town of Cherokee (at Historical Monument). Comment
  HSC38032  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2483 Butte Just E of Magalia Comment
  UC119782  Calochortus tolmiei Dr. E. B. Copeland 1903-4-10 3023 Butte Chico Comment
  SEINET12048526  Calochortus tolmiei Unknown 1978-1 12 Butte 4 yd E of Hwy 70, 15.6 mi NE of Hwy 149, in Feather River Canyon 549 Comment
  CAS-BOT-BC175755  Caltha leptosepala H. F. Copeland 1929-6-10 1239 Butte Jonesville 1524 Comment
  JEPS117414  Caltha leptosepala var. biflora Lowell Ahart 2010-9-28 17266 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CAS-BOT-BC106078  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CHSC93880  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8637 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 856 Comment
  JEPS117929  Calycadenia oppositifolia John Dittes, Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Upper Bidwell Park road west of Parking Lot-R (approximately 6.7 air-miles northeast of Chico, 2.3 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main); Cascade Range Foothills 228 Comment
  JEPS20316  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e Pentz; West Branch of North Fork of Feather River 182 Comment
  POM53155  Calycadenia oppositifolia A. A. Heller, Brown 1902-5-9 s.n. Butte Berry Canyon (near Clear Creek) from type region Comment
  UCD129787  Calycadenia oppositifolia G. F. Hrusa 1997-7-3 14010 Butte Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  UC1971697  Calycadenia pauciflora 1981-5-23 2185 Butte 0.5 mi W of Hwy 99, 0.5 mi N of Broyles Road, ca. 10 mi N of Chico 58 Comment
  CHSC69445  Calycadenia truncata Lowell Ahart 1997-9-6 7887 A Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  JEPS120529  Calycadenia truncata L. P. Janeway 2012-6-7 10855 Butte Northern High Sierra Nevada. Southewestern end of rocky Ridge, 0.8 km west of Ponderosa Way / rim Road, near high-voltage power lines. Comment
  RSA699697  Calycadenia truncata subsp. truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  CAS-BOT-BC90922  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 miles east of Oroville on Highway #24. Comment
  CHSC43717  Calyptridium monospermum Vernon Oswald 1983-6-22 727 Butte Calif. Hwy. 32 2.8 mi n-e of Forest Ranch. 899 Comment
  CHSC57130  Calyptridium monospermum L. P. Janeway 1987-6-13 2209 Butte Dogwood Creek; along road to Mayaro 2.4 mi east of Concow Road. Comment
  CHSC37362  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3683 Butte Along Highway 32, 7.5 miles S of Tehama/Butte County line. Comment
  UC600771  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 339 Butte Jonesville woods Jonesville Comment
  CHSC46810  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1982-6-24 4724 Butte E side of Ponderosa Way (Rim Rd), 1.3 mi N of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  SEINET10496683  Calystegia polymorpha Mary Susan Taylor 1981-5-15 Taylor 3755 Butte T22N R5E nw sec 20, Berry Creek quad. N side of 22N84, ca. 1 air mi SW of Hungrey Hunt Peak, ca. 3 air mi S of Pulga on Feather River Hwy 70. 3300 ft. 1006 Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  UC454113  Campanula prenanthoides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC62539  Campanula scouleri B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 156 Butte Wet meadow along the Skyway (Humbug Summit Rd) ca 5.5 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC38555  Cannabis sativa Vernon Oswald 1982-11-6 11 Butte Bidwell Park, Chico. Along the edge of the parking lot at Salmon Hole. 158 Comment
  CHSC112203  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  JEPS103602  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  SEINET10448262  Capsella bursa-pastoris Mary Susan Taylor 1975-3-25 Taylor 419 Butte Chico. Comment
  SEINET5343423  Cardamine cordifolia M. J. Williams 1967-4-15 s.n. Butte Near Rock Creek Dam. 671 Comment
  UC1609149  Cardamine nuttallii Vernon H. Oswald and Lowell Ahart 1993-4-21 5293 Butte Path along Butte Creek Canal ca 1.0 mi n of its jct with Hendricks Canal (n of De Sabla); along Butte Creek Canal, n of De Sabla 853 Comment
  CAS-BOT-BC37880  Cardamine oligosperma Lowell Ahart 1973-2-21 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 150 Comment
  CHSC41899  Cardamine pachystigma Lowell Ahart 1975-4-1 730 Butte Near the trail to Feather Falls, north of Feather Falls. 487 Comment
  CHSC82709  Cardamine pachystigma L. P. Janeway; B. Castro 2002-3-27 7456 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about one third way down to North Fork Feather River; 1.0 km south-southeast of mouth of China Gulch. 652 Comment
  CAS-BOT-BC18215  Carex A. A. Heller 1928-6-16 14614 Butte Butte Meadows. Comment
  SEINET10502757  Carex Lowell Ahart 1985-6-30 Ahart 5078 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CAS-BOT-BC18463  Carex abrupta L. P. Janeway 1986-9-1 1826 Butte East end of Philbrook Reservoir. 1691 Comment
  NY25081  Carex abrupta A. A. Heller 1913-6-7 10820 Butte West branch of the North Fork of the Feather River near Stirling 914.4 Comment
  CHSC44438  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC45243  Carex amplifolia S. C. Morey 1983-7-23 573 Butte On n side of Humboldt Rd., ca. 32. mi e of Butte Meadows. 1414 Comment
  CHSC84747  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1091 Comment
  RSA700399  Carex angustata L. Ahart 2004-8-2 11327 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  SEINET7550713 Image available Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CAS-BOT-BC19104  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 0.125 mile northeast of Camp 18, about 6.5 miles northeast of Feather Falls. 1219 Comment
  SEINET10466741  Carex aurea Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4191 Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  CHSC25460  Carex barbarae Hayes; Warner 1977-9-12 104 Butte Along the middle branch of Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  OBI69227  Carex barbarae Kari Fisher 2000-11-10 45 Butte Chico State Campus, along Big Chico Crk 79 Comment
  SEINET3128047  Carex barbarae L. S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  SEINET7552625 Image available Carex bolanderi Robert F. C. Naczi, Lawrence P. Janeway 2004-7-24 10522 Butte ca. 2.5 mi NE of village of Butte Meadows along E side of Butte Creek, downslope from (W of) Humboldt Road 1396 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  UC823293  Carex bolanderi Lewis S. Rose 1939-6-7 39235 Butte 3 mi N of Pulga; Feather River Canyon 518 Comment
  CHSC102212  Carex brainerdii L. P. Janeway 2009-11-14 9961 Butte High Cascade Range. Along Skyway 2.8 km north of Stirling City, top of ridge between Long Ravine and West Branch Feather River. 1183 Comment
  CHSC102570  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Sacramento Valley. Campus of California State University, Chico; between Merriam Library, the new student services building, and Warner Ave. 59 Comment
  HSC89408  Carex cusickii Sandy Morey 1983-7-23 575 Butte Cherry Hill Meadow, on N side of Humboldt Rd., 3.2 mi. E of Butte Meadows 1414 Comment
  CHSC50351  Carex cyrtostachya Vernon Oswald 1990-5-14 4208 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC45711  Carex feta L. P. Janeway 1987-6-8 2183 Butte South-draining seep along dirt road, 3.0 mi S of Big Bar Mtn. 1021 Comment
  HSC87066  Carex feta L. P. Janeway 1988-6-16 2799 Butte Along road on W side of canyon of Butte Creek, 3.5 mi. S of Humboldt Rd. 1296 Comment
  SEINET12649386 Image available Carex flacca L. P. Janeway 2009-1 9796 Butte 59 Comment
  CHSC45617  Carex fracta L. P. Janeway; R. A. Schlising 1988-8-1 2914 Butte Vernal pool on the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  SEINET11310005 Image available Carex fracta Unknown 2009-1 24616 Butte Above Humboldt Road, c. 2 air km S of Humboldt Summit, Cascade Range Highlands (CaRH). Comment
  UC532225  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville 1524 Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  SEINET4286139 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 C Butte Just east of Philbrook Resevoir. Comment
  CHSC46462  Carex integra V. Oswald; L. Ahart 1989-6-27 3831 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC52911  Carex integra L. P. Janeway 1987-7-4 2429 Butte Dry open meadow near a seepy area along the road to Jones Meadow, 9.6 mi from Inskip; NW-facing slopes above Last Chance Cr. 1676 Comment
  CHSC92369  Carex laeviculmis Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10501 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262), (WGS84). 1551 Comment
  SEINET8068006 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 B Butte Near Cornelia Lott San Memorial Spring. Comment
  CHSC106510  Carex lemmonii Peter F. Zika 2009-6-17 24520 Butte Cascade Range Highlands (CaRH). Below Concow Road 11.5 road miles above (N of) Route 70, at Dixie Road. 1210 Comment
  LA17618  Carex lemmonii E. B. Copeland; 1929-7-5 610 Butte Jonesville 1500.0 Comment
  SEINET10710070  Carex lemmonii Edwin B. Copel 1929-7-5 Copeland s.n. Butte Jonesville, In sunny bog. 1500 Comment
  JEPS103105  Carex microptera L. P. Janeway, B. Castro 2002-7-7 7617 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  CHSC43921  Carex multicaulis L. P. Janeway; C. A. Janeway 1987-4-20 2007 Butte In front of county line sign along hwy 32 less than 1 mi N of Humboldt Road (to Butte Mdws). 1097 Comment
  CAS-BOT-BC32159  Carex multicaulis L. P. Janeway 1987-5-10 2054 Butte Stirling City quad, above the road near the bridge over West Branch Feather River 754 Comment
  CHSC41294  Carex nebrascensis S. C. Morey 1983-7-21 490 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  CAS-BOT-BC119561  Carex nudata L. P. Janeway 1989-5-19 3269 Butte Paradise East quad. W Branch Feather River at crossing of road from Magalia to Sawmill Peak 481 Comment
  RSA769169  Carex pendula P. F. Zika 2010-5-16 24824 Butte Shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico, Janeway s station, Sacramento Valley 45 Comment
  CHSC47132  Carex praegracilis L. P. Janeway 1987-5-20 2058 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. 457 Comment
  UC1108043  Carex preslii H. F. Copeland 1932-7-24 Butte Rim of south wall of Butte Creek drainage Comment
  CHSC44947  Carex simulata L. P. Janeway; R. A. Schlising 1988-8-2 3150 Butte Ca 1 1/2 air mi NW of Butte Meadows; along Cascade Cr ca 1/2 mi upstream of the Soda Springs USFS campground. 1143 Comment
  SEINET4287828  Carex subfusca L. Janeway, Gog, L 2008-1 3192 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  RSA769160  Carex texensis P. F. Zika 2010-6-22 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, south of Mansion Ave., Chico. 60 Comment
  CHSC52236  Carex utriculata L. P. Janeway 1988-6-25 2893 Butte Meadow adjacent to Bull Hill Road 2.6 mi from Skyway. 1508 Comment
  CHSC25333  Carex vesicaria M. P. Hayes; Warner 1977-8-14 40 Butte Marshy meadow along Butte Creek, 10 mi n of turn to Butte Meadows along Highway 32. 1280 Comment
  CHSC65602  Carex vesicaria L. P. Janeway 1995-8-5 4889 Butte Vernal pool on north side of Humbug Summit Road about 1.2 mi northeast of Snag Lake. 1801 Comment
  SEINET10751319  Carex vesicaria var. vesicaria Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3039 Butte T26N, R5E, Jonesville quad (15'). SE1/4 of sec. 20. Vernal pool next to Humbug Rd 0.8 mi W of Butte Creek House. Large rocky pool surrounded by lodgepole pines and montane chaparral. This is the main species filing the drying vernal pool. 1806 Comment
  CHSC66453  Carex vulpinoidea Vernon H. Oswald; Lowell Ahart 1996-6-10 7754 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A canal at the NE corner of Tract 7.2, Sanctuary I. Common along all this canal, its laterals, and the edges of Tract 6, a permanent pool in Sanctuary I. 33 Comment
  CAS-BOT-BC499135  Carex xerophila Peter F. Zika; L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mi N of Skyway Rd. 720 Comment
  CAS-BOT-BC249111  Castilleja affinis Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  JEPS124001  Castilleja affinis subsp. affinis Lowell Ahart 2015-4-18 20047 Butte About 300 yards east of the bridge across Rocky Honcut Creek, about 8 1/2 miles (air) southeast of Oroville. Comment
  CHSC114975  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 A Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC48972  Castilleja applegatei subsp. pinetorum Vernon Oswald 1984-5-23 1207 Butte Pulga Rd, 0.5 mi n of Calif. Hwy 70. 487 Comment
  CAS-BOT-BC255455  Castilleja applegatei var. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  UC492740  Castilleja arachnoidea H. F. Copeland 1932-8-19 Butte ridge se head of Butte Creek; Jonesville 2100 Comment
  CHSC42227  Castilleja attenuata David B. Andreas 1986-4-20 15 Butte Ca. 5 m from roadside junction Hwy 99 and Broyles Road. 18 km nw of Chico. 61 Comment
  CHSC90166  Castilleja attenuata John Copeland 1980-3-7 15 Butte About 1.5 mi north on Meridian Road from Hwy 99, 1.0 mi east of dirt road, 1 ft north and south side of road. Comment
  JEPS119587  Castilleja attenuata Lowell Ahart 2012-4-17 17875 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  JEPS124006  Castilleja attenuata Lowell Ahart 2015-4-18 20043 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  UC1609089  Castilleja campestris subsp. campestris Lowell Ahart 1993-5-17 6950 Butte about 1.5 mi n and 3 mi e Honcut (on the w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CHSC114957  Castilleja exserta subsp. exserta Lowell Ahart 2015-3-27 19972 Butte Just north of the small drainage that flows into Coal Canyon, south of Coal Canyon Falls, about 1-1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 373 Comment
  JEPS124166  Castilleja exserta subsp. exserta Lowell Ahart 2015-3-27 19972 Butte South of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC26789  Castilleja lacera M. S. Taylor 1978-5-6 1620 Butte Ca. 8 mi ne of Chico, ca. 1/2 mi e of Cohasset Rd. 137 Comment
  CHSC43193  Castilleja lacera R. A. Schlising 1981-4-27 4042 Butte S of Cohasset. Immediate roadside of Cohasset hwy, 2.9 mi NE jct with road to Richardson Springs. 201 Comment
  CHSC61180  Castilleja lacera Vernon H. Oswald 1993-5-18 5399 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  UC886502  Castilleja lacera A. A. Heller 1915-5-28 11904 Butte near Cohasset (Sierra foothills); Sierra Comment
  UC426961  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville 1500 Comment
  SD4806  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville, glades and edges of meadows 1500 Comment
  UC532168  Castilleja tenuis Herbert F. Copeland 1934-7-9 Butte edge of Butte Creek Meadows (Jonesville Region); Jonesville Region Comment
  CAS-BOT-BC56923  Ceanothus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada. 5 mi. below Magalia on Oroville Road 609 Comment
  CAS-BOT-BC48544  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville 472 Comment
  CAS-BOT-BC48810  Ceanothus cuneatus John Thomas Howell 1975-6-15 51079 Butte about 5 miles from Paradise on Skyway to Chico Comment
  CHSC3262  Ceanothus cuneatus M. L. Hillier 1966-3-4 Butte In grassy earth along Cohasset rd. about 200 yds. s. of Rock Creek Bridge. Comment
  CAS-BOT-BC50815  Ceanothus integerrimus A. A. Heller 1914-6-22 11502 Butte Chico Meadows 1219 Comment
  CHSC22528  Ceanothus integerrimus Robert A. Schlising 1963-5-4 2556 Butte 1.2 miles south of Paradise along Skyway Road. 396 Comment
  RSA399893  Ceanothus integerrimus L. S. Rose 1937-6-10 37376 Butte Forbestown. 838 Comment
  RSA719712  Ceanothus integerrimus Michael A. Vincent, K. Levings 2006-7-29 12888 Butte NE of Chico along Rt. 32. Comment
  UC600527  Ceanothus integerrimus H. F. Copeland 1930-7-26 Butte Jonesville Comment
  JEPS97589  Ceanothus lemmonii R. D. Stone and W. B. Davilla 1984-4-21 596 Butte ca. 0.3 mi SE of De Sabla Powerhouse; Butte Creek drainage 609 Comment
  SEINET194924  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET13946050 Image available Ceanothus prostratus A. A. Heller 1915-1 11971 Butte Chico Meadows in the Sierra Nevada; 4000 ft alt. 1219 Comment
  CHSC11991  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville. 1550 Comment
  CHSC3015  Cedrus deodara Carl Pejsa 1958-4-19 137 Butte Bidwell Park Forestry Station. Comment
  HSC97161  Centaurea melitensis L. Ahart 2006-6-9 12659 Butte On N side of Bardees Bar Rd., ca. 1/8 mi. NW of the poor bridge across the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. SW of Pulga 386 Comment
  UCD80049  Centaurea melitensis CNPS SN Foothill Team 2005-5-4 SNFN 0201 f Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  UCD130034  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  CHSC3231  Centaurea solstitialis Virginia Hagaman 1966-4-30 155 Butte Field 8.4 miles north of Chico on highway 32. Comment
  UCD130097  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  JEPS117540  Centaurium venustum Lowell Ahart 2010-6-9 16781 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  CHSC98895  Centranthus ruber L. P. Janeway 2007-12-11 9223 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, east side Table Mountain Blvd bridge. Growing among rock outcrops just above river high water line. 40 Comment
  CAS-BOT-BC288535  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte Near Pentz Comment
  SBBG19383  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  CAS-BOT-BC288524  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 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
  CHSC61005  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 air miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC42972  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC388174  Cerastium fontanum Javier Penalosa 1962-6-18 2451 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC37435  Cerastium glomeratum R. A. Schlising 1982-4-24 4234 a 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. Comment
  CHSC42959  Cerastium glomeratum Lowell Ahart 1987-7-3 5771 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC92534  Cerastium glomeratum L. P. Janeway 2005-3-10 8344 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC388263  Cerastium glomeratum Lowell Ahart 1987-5-12 5625 Butte South of the dirt road, 1 1/2 miles east of Camp 18, south of Lumpkin Ridge Road, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC179537  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Plentiful in the canyon of Big Chico creek east of Chico. 68 Comment
  CHSC38641  Cercocarpus betuloides var. betuloides Vernon Oswald 1983-3-13 154 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  LA203122  Chaenactis douglasii var. douglasii E. B. Copeland; 1931-7-6 692 Butte Jonesville 1900.0 Comment
  RSA451323  Chamaebatia foliolosa L. S. Rose 1937-6-10 37368 Butte Forbestown. 838 Comment
  SEINET10546750  Chamaesaracha nana Mary Susan Taylor 1978-7-19 Taylor 1767 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
  CDA35250  Chamaesyce ocellata T. C. Fuller 1962-8-6 9332 Butte North of Hwy 99E to Chico, 1.2 miles south of Tehama/Butte County line. 0 Comment
  CDA35258  Chamaesyce ocellata T. C. Fuller 1962-6-11 8948 Butte Northwest corner of Pentz Rd. and Hwy 99E to Biggs, 9.4 miles southeast of Chico. 0 Comment
  CHSC72250  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  UC176082  Chamaesyce ocellata subsp. ocellata A. A. Heller 1913-9-16 11140 Butte e Chico (hills near Big Chico Creek) Comment
  UC177569  Chamaesyce ocellata subsp. ocellata H. M. Hall July 1914 9759 Butte e Chico 91 Comment
  CHSC30762  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1978-9-8 1887 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CHSC38442  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald 1983-6-24 757 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  CHSC47677  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1989-9-21 6392 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC58911  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1992-7-21 6794 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC94834  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-10-8 13440 Butte 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
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  UC1563281  Chenopodium album Lowell Ahart 1990-9-30 6609 a Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  CAS-BOT-BC460929  Chenopodium album Lowell Ahart 1981-11-6 3230 Butte East of the Gridley Bridge 35 Comment
  UCR188501  Chenopodium missouriense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  SEINET10479079  Chenopodium pumilio Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4744 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CDA43011  Chenopodium strictum var. glaucophyllum L. Ahart 2008-7-23 15147 Butte 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. Comment
  CHSC109785  Chenopodium vulvaria Lowell Ahart 2012-10-20 18488 Butte On the south side of the paved park road and Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UC1586525  Chenopodium vulvaria Lowell Ahart 1991-8-17 6703 Butte Durham Elementary School Durham (native plant garden) 54 Comment
  CAS-BOT-BC451483  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  CHSC11807  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville. 1550 Comment
  CHSC26709  Chloris virgata Hayes; Warner 1977-10-23 146 Butte On w road edge, along road into upper Bidwell Park (Wildwood Drive), approx. 1/4 mi n of Manzanita Avenue in Chico. 35 Comment
  CAS-BOT-BC498819  Chlorogalum pomeridianum John Thomas Howell 1962-6-15 37426 Butte Volcanic slopes, 4 miles from Paradise on road to Oroville 106 Comment
  CHSC102377  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2009-6-19 15946 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  RSA0058881  Chondrilla juncea Lowell A. Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles(air) northwest of Forbestown. 483 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  CHSC46278  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1989-4-14 3734 Butte Wurlitzer Unit, Vina Plains Preserve. Near the northeast gate on Haille Rd. 57 Comment
  CHSC35077  Cicendia quadrangularis R. A. Schlising 1980-3-24 3527 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  JEPS106001  Cicendia quadrangularis Lowell Ahart 2004-4-4 10714 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  RSA325174  Cicendia quadrangularis M. S. Taylor, L. Ahart, Jim Jokerst 1984-4-6 5398 Butte Approximately 0.5 mile north of Kunkle Reservoir, on east side of Pentz-Magalia Highway, ca. three miles south of Paradise. Comment
  SEINET10872095  Cichorium intybus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4125 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC8564  Cinnamomum camphora M. MacArthur 1968-6-23 289 Butte Ca. 20 ft. SE Big Chico Creek, just south of PSA bridge, Chico State College. 60 Comment
  CAS-BOT-BC278076  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CAS-BOT-BC285725  Cirsium vulgare Lowell Ahart 1981-7-26 3010 Butte Gray Lodge, southwest of Gridley 35 Comment
  UCD103991  Clarkia arcuata R. J. Goedl 1979-4-14 26 Butte Ca. 6 miles N of Oroville, 100 ft. W of Cherokee Mountain Road. 365 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
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  JEPS94988  Clarkia mildrediae Lowell Ahart 1997-7-11 7743 Butte about 2 air mi sw of Bald Mountain (about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City, on n side of dirt road, se of Cold Creek) 1219 Comment
  CAS-BOT-BC163262  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4421 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north or Road 22N34 804 Comment
  CAS-BOT-BC163267  Clarkia mildrediae subsp. lutescens M. S. Taylor 1978-7-21 1804 Butte On n side of Oroville-[Quincey] Quincy Hwy, ca. 9 mi n of Lake Madrone 914 Comment
  CHSC89906  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  RSA0004429  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4836 Butte 1.3 miles south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. 994 Comment
  CHSC43217  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1987-6-26 2302 Butte 0.4 mi E of Granite Ridge along road to Lynch and Logue Meadows. Roadcut. 1249 Comment
  CHSC44635  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  RSA0049654  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor, Bryan Waylan 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road descending into West Branch Feather River canyon 1.4 miles down (north) from the intersection with the Skyway 1005 Comment
  CHSC46134  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte In the cutbank at the little building at the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC64113  Clarkia mosquinii L. P. Janeway 1994-6-17 4668 Butte Along Poe Powerhouse Road 0.9 mi east of Bardees Bar Road; west side of canyon of North Fork Feather River. Southeast-facing road cutbank. 499 Comment
  UCD21825  Clarkia purpurea L. D. Gottlieb 2003-5-24 303 Butte Wilbur Rd., at Hwy 162, west of Oroville. Comment
  CAS-BOT-BC172530  Clarkia purpurea subsp. purpurea A. A. Heller 1914-5-11 11384 Butte Hills 8 miles north of Oroville Comment
  CHSC91105  Clarkia purpurea subsp. purpurea Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  POM32285  Clarkia purpurea subsp. purpurea A. A. Heller, H. E. Brown 1902-5-6 5472 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC172535  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte S.W. of Oroville Comment
  CAS-BOT-BC163858  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1972-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC112110  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2012-6-5 18165 Butte On the side 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
  RSA21663  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-18 8733 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  CHSC1111  Clarkia purpurea subsp. viminea M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC26849  Clarkia rhomboidea M. S. Taylor; M. Hayes 1978-6-24 1642 Butte On n side of Old Humboldt Rd at jct of Butte Creek and Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 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
  RSA108431  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 758 Butte Highway 24, 0.8 mile south of Arch Rock, Feather River. Comment
  RSA144792  Clarkia rhomboidea G. I. Stage, R. Thorp 1959-6-21 59 -121 Butte 11.9 miles northwest of Chico on Highway 32 Comment
  RSA448333  Clarkia rhomboidea L. Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CHSC46135  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, about 1 mile west of Highway 70, about 2 1/2 miles south-west of Oroville. 33 Comment
  POM196082  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  SEINET10929033  Claytonia parviflora Mary Susan Taylor 1981-5-7 Taylor 3631 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC34702  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-7 3631 Butte Along Sucker Creek, on e side of Bridge, ca. 4 air mi sw of Feather Falls, on moist mossy boulder in shade. 304 Comment
  RSA715884  Claytonia parviflora subsp. parviflora Paul Maslin, John Dittes 2005-3-17 11651 Butte About 1/8 mi. northwest of the Indian Cave, about 3/4 mi. west of Big Chico Creek, about 4.5 mi. (air) northeast of Chico. Common. 482 Comment
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CHSC4622  Claytonia perfoliata subsp. perfoliata R. Carter 1966-3-22 304 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W of Feathervale at 6120 woodleaf St. Rt., 10 yds W of house under Quercus wislizenii. 243 Comment
  SEINET10572740  Claytonia rubra Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4861 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
  CHSC24890  Clematis lasiantha P. Laherty 1976-4-4 18 Butte Ca. 2 ft n of Ponderosa Way, ca. 4.5 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 441 Comment
  SBBG40356  Clematis lasiantha J. Ingram, A. Ingram 1960-4-7 513 Butte steep bank below Honey Run Rd, between 2 and 3 mi S of Paradise Comment
  SEINET267150  Clematis lasiantha T. A. Ranker, P. G. Trapp 1994-6-17 1613 Butte Pence Road south of Paradise. 395 Comment
  CHSC3928  Collinsia sparsiflora Wayne ) Baum 1967-3-21 20 Butte Along e. side of Cohasset Rd., ca. 3 mi. n. of the Keefer Rd. and Cohasset Rd. intersection. 76 Comment
  CHSC3970  Collinsia sparsiflora J. Senter 1967-4-3 3 Butte 100 yds. S.E. slope near covered bridge on Humbug Rd. 76 Comment
  HSC71258  Collinsia sparsiflora J. P. Smith 1973-3-22 5914 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA633334  Collinsia sparsiflora Michael A. Vincent, Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  CHSC43510  Collinsia sparsiflora var. collina Lowell Ahart 1979-4-17 1829 Butte About 1/4 mile north of Avacado Avenue, about 2 miles north-west of Bangor. 137 Comment
  JEPS6659  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15053 Butte Near oak trees on Highway #24 near the summit above the junction with the Yankee Hill road. Arid Transition Zone. 609 Comment
  HSC97025  Collinsia tinctoria L. Ahart 2006-6-9 12654 Butte W side of Bardees Bar Rd., N of small stream, 1/8 mi. W of bridge across N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  SEINET12331824  Collinsia tinctoria Unknown 1985-1 4977 Butte W of Lunt Rd, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  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
  UC392194  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slide over Butte Creek; Jonesville 1550 Comment
  UC600656  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slides over Butte Creek; Jonesville 1550 Comment
  SEINET10544541  Comandra pallida Mary Susan Taylor 1977-6-25 Taylor 1376 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  UCR188717  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13072 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  SEINET10474183  Conyza bonariensis Lowell Ahart 1985-1-27 Ahart 4836 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CHSC1741  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  CHSC84453  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  JEPS66511  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2768 Butte 1.5 mi w Butte Meadows (at Thatcher Ridge road junction) 1280 Comment
  POM31834  Coreopsis stillmanii C. C. Bruce 1897-05 1987 Butte Iron Canyon. Comment
  JEPS115604  Cornus glabrata Lowell Ahart 2009-5-23 15733 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC81486  Cornus nuttallii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  CHSC48309  Cornus sericea subsp. sericea Vernon Oswald 1983-6-22 736 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  CAS-BOT-BC210519  Cornus sessilis C. R. Quick 1943-7-26 43 -20 Butte Big Bar Mt. near Fagan's Saddle, Plumas Nat. Forest Comment
  POM77766  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Lomo Comment
  SEINET10836292  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS115694  Cotoneaster pannosus Lowell Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  CAS-BOT-BC427625  Crassula aquatica Lowell Ahart 1986-11-14 5459 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
  CHSC103991  Crassula aquatica Lowell Ahart 2010-5-14 16648 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
  CHSC38403  Crassula aquatica Vernon Oswald 1983-5-11 466 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  JEPS107325  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS119613  Crassula connata Lowell Ahart 2012-4-9 17837 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CHSC46741  Crassula saginoides Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET516423  Crassula saginoides Lowell Ahart 1974-1 394 Butte Normal size plants, growing on damp soil on the bottom of a small vernal pool, peter Ahart Ranch, about 1 1/2 mi. N and 2 mi. E of Honcut, about 12 mi S of Oroville. 46 Comment
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  JEPS120077  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  SEINET10474588  Crepis pleurocarpa Mary Susan Taylor 1982-6-24 Taylor 4722 Butte T22N R4E nw/ne sec 23. Pulga SW quad. W side of Ponderosa Way (Rim Rd) under PG&E lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap, nw of Oroville. 2800 ft. Red rocky soil. 853 Comment
  UCR219265  Croton setiger George K. Helmkamp, E. A. Helmkamp 2009-9-5 15588 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC111976  Crucianella angustifolia Lowell Ahart 2012-6-2 18132 Butte Along sides of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of West Branch Bridge across Lake Oroville. 286 Comment
  RSA718311  Crucianella angustifolia L. Ahart 2006-6-9 12645 Butte On the S side of the service road to Bardees Bar along the N Fork of the Feather River. About 1/8 mile E of Hwy 70. About 2.75 miles (air) SW of Pulga. 436 Comment
  RSA0106564  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 Butte Northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CAS-BOT-BC190092  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles northeast of Oroville. 269 Comment
  CHSC97688  Crypsis schoenoides Lowell Ahart 2007-11-3 14557 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC190169  Crypsis vaginiflora Lowell Ahart 1982-7-10 3673 Butte Sierra Nevada. Ca. 0.25 mile southeast of the Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  CAS-BOT-BC189242  Cryptantha Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  RSA4225  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  CHSC103214  Cryptantha crinita Paul Kirk; John Hunt 2010-5-25 101 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  CHSC78127  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte On the bottom of an old gold mining pit, east of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC11391  Cryptantha intermedia Lowell Ahart 1970-4-16 Butte Along Humbug Road, near Paradise. 762 Comment
  UC762200  Cryptantha intermedia R. F. Hoover 1936-5-21 1160 Butte 3 mi n Chico Comment
  UCD80136  Cryptantha intermedia CNPS SN Foothill Team 2006-5-23 SNNR 0789 a Butte BLM Parcels near Paradise. 520 Comment
  CHSC61018  Cupressus arizonica subsp. arizonica Vernon H. Oswald 1993-7-29 5732 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  UC1086220  Cupressus macnabiana L. Heckard and R. Bacigalupi 1951-8-7 3473 Butte 0.5 mi ne of Magalia 701 Comment
  UCD133530  Cupressus macnabiana Mike Mitzel 1977-2-13 3 Butte ca. 0.5 mi W of the West Branch River and 4 mi N of Paradise. 762 Comment
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC26665  Cuscuta californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1457 Butte E side of Old Humboldt Rd., ca. 4.5 mi ne of Butte Meadows turnoff from Hwy. 32. 1326 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  CHSC48359  Cuscuta californica var. californica Vernon Oswald 1988-6-14 3378 Butte Jordan Hill Rd. 1.0 mi (odometer) e of the West Branch of the Feather River. 579 Comment
  HSC97157  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of dredger pond, W of N Honcut Creek, about 2.5 mi. N and 2.75 mi. E of Honcut, about 12 mi. SE of Oroville 55 Comment
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 Comment
  CHSC30992  Cymopterus terebinthinus var. californicus M. S. Taylor; R. Schlising 1980-7-6 3073 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS124150  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte About 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC29242  Cynoglossum grande M. S. Taylor 1980-5-8 2617 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  SEINET10497513  Cynoglossum grande Mary Susan Taylor 1976-3-6 Taylor 1011 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CAS-BOT-BC190373  Cynosurus John Thomas Howell 1980-5-26 53582 Butte Sierra Nevada. 2 miles northeast of Pulga Bridge, North Fork of Feather River. Comment
  CHSC103980  Cynosurus echinatus Lowell Ahart 2010-5-14 16660 Butte Area of erosion control, 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
  CHSC100230  Cyperus difformis John Dittes 2003-10-8 850 -A Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  SEINET8756313 Image available Cyperus difformis J. M. Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC45752  Cyperus eragrostis L. P. Janeway 1987-6-13 2190 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  HSC87074  Cyperus eragrostis L. P. Janeway, C. A. Janeway 1986-9-14 1864 Butte Pine Creek Landing 40 Comment
  JEPS108952  Cyperus eragrostis Lowell Ahart 2006-9-11 13298 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
  CHSC34131  Cyperus erythrorhizos L. Ahart 1981-9-19 3191 Butte On the edges of a pond ca. 100 m n of the Cresta Powerhouse and a little e of the Feather River along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  JEPS120855  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  UCD141048  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  CHSC45127  Cyperus esculentus Vernon Oswald 1987-6-12 2988 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC78487  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte South end of the large dredge pond in the Oroville Wildlife Area on the west side of the Feather River between Palm Avenue and Vance Avenue. 28 Comment
  CHSC42900  Cyperus niger Lowell Ahart 1987-7-3 5767 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC78282  Cyperus niger Lowell Ahart 2000-6-17 8482 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  JEPS93818  Cyperus niger Lowell Ahart 1998-6-30 8010 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
  CDA38968  Cyperus niger L. Ahart 2000-8-23 8662 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC113842  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC113847  Cyperus niger var. capitatus Lowell Ahart 1982-8-19 1424 Butte Ca. 1 mi N and 3 mi E of Honcut, Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC113851  Cyperus niger var. capitatus Lowell Ahart 1979-9-8 s.n. Butte Ca. 6 mi. N of Oroville. 200 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
  CHSC94594  Cyperus squarrosus Lowell Ahart 2006-9-11 13310 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
  CHSC66454  Cyperus strigosus Vernon H. Oswald; Lowell Ahart 1996-6-10 7730 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC97396  Cyperus strigosus Robert Fischer 2006-6-19 1002 Butte Chico. Within upper Bidwell Park in the City of Chico. At edge of a remnant pool in Diversion Channel near junction of Lindo Channel, upstream of weir. 60 Comment
  RSA263830  Cyperus strigosus J. T. Howell 1959-9-20 34636 Butte Eastern outskirts of Oroville. 61 Comment
  CHSC26840  Cystopteris fragilis M. S. Taylor 1978-6-24 1659 Butte On n side of Scotts John Rd, ca. 3 mi e of ets jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  CAS-BOT-BC189900  Danthonia californica Clarence R. Quick 1965-7-25 65 -18 Butte Sierra Nevada. Section Corner Meadow. Coyote Gap - Four Trees road. Comment
  CHSC6759  Danthonia unispicata V. Hagaman 1968-4-19 475 Butte Cherokee Village ca 200 yards E. of cemetary. Comment
  CHSC2487  Delphinium nudicaule W. Fitzwater 1958-4-19 Butte Cohasset Rd., Chico area. 396 Comment
  CHSC56871  Delphinium nudicaule Don Kroessig 1979-4-15 1 Butte On the e side of the road to PG and E Centerville Powerhouse 5.4 miles from the intersection of Humbug and Honeyrun Roads. 274 Comment
  CHSC57139  Delphinium nudicaule J. B. Locey 1975-5-6 19 Butte Ca. 50 yds e of Humbug Road, ca. 1 mi n of Centerville. 182 Comment
  POM99888  Delphinium nuttallianum C. C. Bruce 1897-03 1916 Butte Butte Creek. Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  RSA718042  Delphinium variegatum R. D. Fischer 2004-4-4 802 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side Hwy 32 along Guardian Trail between the Pine and Bloodypin Trails 335 Comment
  SEINET12091629  Delphinium variegatum Unknown 1984-1 10 Butte Extensive population on NW side of State Hwy. 70, 0.1-2.0 mi NE of its junction w/ Palermo Rd 61 Comment
  UCD14293  Delphinium variegatum Katherine Courtney 1983-5-15 13 Butte Butte Co.; along the east side of Highway 70, 4 mi. southwest of Oroville, north of Polermo Road intersection; 60 Comment
  CHSC25133  Delphinium variegatum subsp. variegatum J. Brattan 1974-4-15 5 Butte Found ca. 25 ft. s of Skyway, ca. 1.5 mi se of Burton's Mesa Restaurant, ca. 6 mi e of Chico. 152 Comment
  CHSC26780  Dendromecon rigida M. S. Taylor 1978-5-6 1580 Butte Magalia. 609 Comment
  CHSC69120  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1997-8-1 7770 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
  CHSC42359  Deschampsia danthonioides Lowell Ahart 1987-5-6 5556 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC52152  Deschampsia danthonioides Jeffrey D. Prouty 1979-4-18 208 Butte Northernmost Butte county. Cana-Pine Creek Road ca. 500 yds nw of Singer Creek. H. Wurlitzer Ranch ca. 10 mi n of Chico. Eastern margin of road. 57 Comment
  SEINET10524217  Deschampsia danthonioides Vernon H. Oswald, Lowell Ahart 1988-7-13 Oswald 3577 Butte T25N, R5E nw/S16. Red Fir Forest. Road to High Lakes e of Philbrook Reservoir. Common in wet soil of a seep on a steep outcropping of metasedimentary rock on the n side of the road. 1859 Comment
  CAS-BOT-BC201749  Deschampsia elongata Lowell Ahart 1987-7-17 5822 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC38807  Deschampsia elongata Vernon Oswald 1983-6-14 687 Butte Upper Bidwell Park, Chico, beside Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  CHSC39497  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC97324  Dianthus armeria subsp. armeria L. P. Janeway 2007-7-11 9115 Butte Northern High Sierra Nevada. Plumas National Forest; along the edge of Road 22N49 200 m south of 4 Mile Ridge Road and 35 m north of Oroville-Quincy Hwy (and 15 m lower). 991 Comment
  CHSC635  Dicentra formosa R. Staley 1952-7-21 Butte 304 Comment
  CAS-BOT-BC402385  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 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
  CHSC43679  Dicentra pauciflora Vernon Oswald; Lowell Ahart 1987-5-14 2903 Butte Ca. 2.5 mi e of Jonesville on the road connecting Humboldt and Humbug Roads, 0.2 mi se of Scotts John Creek. 1755 Comment
  CAS-BOT-BC500059  Dichelostemma capitatum Helen Edwards 1917-6-1 s.n. Butte DeSabla Comment
  CAS-BOT-BC500062  Dichelostemma capitatum Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 64 Butte S. of Paradise on Cherokee Rd at 7.5 mile marker 350 Comment
  CAS-BOT-BC500067  Dichelostemma capitatum L. S. Rose 1931-4-14 s.n. Butte Oroville Comment
  UCSB63605  Dichelostemma capitatum subsp. capitatum Woodmansee, B. 1987-4-7 Butte Skyway, Hamlin Canyon 274 Comment
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Jul 24 2008
  CAS-BOT-BC501088  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  SEINET12051034  Dichelostemma volubile S. A. Carter 1988-1 s.n. Butte S side of Little Butte Creek, ca 8.8 mi ESE of Chico, ca 100 ft W of Honey Run Rd 160 Comment
  CDA42841  Dichondra donelliana L. Ahart 2011-6-5 17367 Butte Just north of the small wash, 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 (air) southeast of Oroville. Comment
  SEINET4207208  Dichondra donelliana Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-8 3312 a Butte North Honcut Creek, Ahart Ranch about 2.5 mi NE of Honcut between Marysville & Oroville.; 0 46 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  CAS-BOT-BC209037  Digitaria sanguinalis Lowell Ahart 1987-7-3 5763 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC45211  Digitaria sanguinalis Lowell Ahart 1976-7-4 1152 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC76019  Digitaria sanguinalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8154 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
  SACT000981  Digitaria sanguinalis Herbert Copeland 1923-1 Butte Comment
  CAS-BOT-BC151925  Diplacus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico 304 Comment
  CAS-BOT-BC151920  Diplacus douglasii Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC43556  Diplacus grandiflorus Lowell Ahart 1977-4-28 1325 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  CHSC71193  Diplacus kelloggii Lowell Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC153661  Diplacus mephiticus R. Banchero 1980-7-7 292 Butte 1.1 mi e of Camp 18, Ca 5 mi ne of town of Feather Falls 1280 Comment
  CAS-BOT-BC154029  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC44791  Diplacus torreyi R. Banchero 1980-7-7 284 Butte Along Quartz Creek Rd 0.2 mi N of its jct with County Line Rd, ca 2.4 mi S of the Fall River campground. 1164 Comment
  CAS-BOT-BC208612  Distichlis spicata Lowell Ahart 1977-7-24 1494 Butte Gray Lodge, 10 miles south-west of Gridley 30 Comment
  CHSC677  Distylium V. Holt 1961-3-10 Butte Growing on Bidwell grounds between a Crepe Myrtle and a palm near sidewalk to Arcadian Street. 57 Comment
  CDA43367  Dittrichia graveolens D. G. Kelch 2012-9-19 12 .356 Butte Oroville, immediately west of sewage treatment plant. Comment
  JEPS120013  Dittrichia graveolens Lowell 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
  UC426932  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CHSC13898  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 177 Butte 3.8 mi ne on Cherokee Road from Table Mountain Road; on northwest side of road in open grassy meadow near oak tree. Comment
  CHSC1393  Dodecatheon clevelandii subsp. patulum J. Baynes 1929-4-1 Butte Salmon Hole on Chico Creek. 152 Comment
  UC640447  Dodecatheon clevelandii subsp. patulum Elmer I. Applegate 1927-3-4 5000 Butte about ten mi n Chico; n of Chico Comment
  UCD55002  Downingia bicornuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N of Gridley. 30 Comment
  JEPS103261  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CAS-BOT-BC41347  Draba verna Lowell Ahart 1983-4-1 3914 Butte About 4 miles south of Jarbo Gap. Along the edge of old Highway 40. 350 Comment
  CHSC52343  Draperia systyla L. P. Janeway 1989-5-17 3250 Butte Cyn overlook along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. Old landing/overlook covered with straw. 693 Comment
  CAS-BOT-BC401552  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  CHSC36294  Drosera rotundifolia M. S. Taylor 1982-8-16 5004 Butte N side of spur road off 52513, 1 mi s of Jones Mea ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  CHSC45270  Drosera rotundifolia Vernon Oswald 1984-7-12 1568 Butte Skyway 1.4 mi s of Inskip. ... Field redacted by CHSC, contact the data manager for more information 1402 Comment
  CHSC116222  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 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
  UC123311  Dryopteris arguta Mrs. R. M. Austin May 1883 79 Butte Big Chico 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
  CHSC455  Dudleya cymosa C. Merton 1929-5-1 Butte Paradise. Comment
  CHSC34200  Dysphania ambrosioides J. D. Jokerst 1981-9-26 1490 B Butte Locally abundant in dry sand bars adjacent to and E of Sacramento River at the Bidwell River State Park (Chico Landing) ca. 5.0 mi W of Chico. Comment
  CHSC42731  Dysphania botrys Lowell Ahart 1987-5-27 5712 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC40910  Echinochloa crus-galli Lowell Ahart 1985-11-7 5240 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  JEPS120763  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 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
  UCD60732  Echinochloa walteri E. M. Johnston 1915-1 W- 152 -J Butte Biggs. Comment
  JEPS95994  Echinodorus berteroi Lowell Ahart 1999-9-21 8275 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
  CHSC31569  Eclipta prostrata L. Ahart 1974-11-9 677 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS104101  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the n side of Highway 149, ca 1/4 mi w of Highway 70, ca 5 1/2 mi (air) nw of Oroville. 71 Comment
  CHSC115335  Elatine Lowell Ahart 2015-4-24 20069 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC42100  Elatine heterandra Lowell Ahart 1986-11-14 5472 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
  SEINET10447970  Elatine rubella Mary Susan Taylor 1982-4-28 Taylor 4356 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC33958  Elatine triandra M. S. Taylor; Lowell Ahart 1981-8-16 4200 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC117440  Eleocharis acicularis Lowell Ahart 2016-5-24 20868 Butte On the bottom of a large drainage, about 100 yards norfth of the ditch, 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
  CHSC94835  Eleocharis acicularis var. acicularis Lowell Ahart 2006-10-8 13435 Butte 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
  JEPS98317  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte 4 air mi NE of Feather Falls (100 yds N of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  RSA127039  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow. 1341 Comment
  UC1562357  Eleocharis bella Lowell Ahart and Vern Oswald 1990-7-5 6650 b Butte 2 mi NE of Snag Lake (small meadow 1/2 mi N of Butte Creeek house) 1828 Comment
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET11746346  Eleocharis decumbens Unknown 1980-1 2459 Butte near intersection of Forbestown Rd & Black Bart Rd, ca 1 mi W of Robinson Mill Rd 671 Comment
  SEINET3441881  Eleocharis decumbens Unknown 2000-7-7 8560 Butte Feather Falls, Feather Falls, about 4 air miles northeast, about 1 mile southwest of the intersectiof Lumpkin Ridge Road,road to Fall River and the county road, upper west branch of knownothing Creek, north side of Lumpkin Ridge Road 1210 Comment
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC29283  Eleocharis macrostachya R. A. Schlising 1980-4-2 3538 Butte Richvale vernal pools. S of junction of Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC68432  Eleocharis macrostachya L. P. Janeway 1986-10-19 1928 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC8754  Eleocharis macrostachya S. Chulasmai 1966-5-20 39 Butte Horse-shoe (mud) Lake. Comment
  JEPS98363  Eleocharis macrostachya Lowell Ahart 2000-6-21 8498 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  CHSC94833  Eleocharis obtusa Lowell Ahart 2006-10-8 13436 Butte 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
  SEINET10466896  Eleocharis palustris Mary Susan Taylor 1982-4-28 Taylor 4368 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CAS-BOT-BC113213  Eleocharis parishii Copeland 1903-5-30 3280 Butte Chico Comment
  JEPS95995  Eleocharis parishii Lowell Ahart 1999-9-21 8277 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
  SEINET7586923 Image available Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 549 Comment
  RSA0046897  Eleocharis quadrangulata Richard Carter 2006-7-31 17113 Butte Ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area. Comment
  CHSC78202  Eleocharis quinqueflora Lowell Ahart 2000-5-23 8386 Butte Along a large wash, northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  CHSC78568  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  CHSC78927  Eleocharis radicans Lowell Ahart 2000-10-2 8698 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
  JEPS124328  Eleocharis radicans Lowell Ahart 2015-10-20 20567 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC8599  Elymus caput-medusae Dave Isle 1969-5-17 477 Butte On E. side of the Bare Hole turn-off from the Upper Bidwell Park road (E. of Chico). 59 Comment
  CAS-BOT-BC227297  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  SEINET10564686  Elymus elymoides A. Arthur Heller 1917-7-29 Heller 12867 Butte Summit above Jonesville in granite, in open forest of Abies magnifica. Undershrubs are Uva ursi, Cerasus, Ceanothus cordulatus and velutinus. 2134 Comment
  UC821488  Elymus elymoides subsp. elymoides A. A. Heller 1917-7-29 12867 Butte summit above Jonesville 2133 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
  CHSC109618  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 76 Comment
  JEPS94308  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  CHSC65611  Elymus glaucus subsp. jepsonii L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 Comment
  CHSC97405  Elymus glaucus subsp. jepsonii Robert Fischer 2006-6-27 1024 Butte Paradise. Sierra Nevada foothills, upper Paradise Pines, off Nimshew Road. 853 Comment
  CHSC42952  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-7-8 5805 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 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
  JEPS115636  Elytrigia pontica subsp. pontica Lowell Ahart 2009-8-23 16299 Butte On dry soil, about 100 yards south of the GPS reading, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SEINET10453215  Epilobium adenocaulon var. holosericeum Mary Susan Taylor 1977-6-25 Taylor 1375 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC69450  Epilobium brachycarpum Lowell Ahart 1997-9-6 7888 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  UC873511  Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 mi n Oroville Comment
  UCR188571  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  UCR219264  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15589 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC36295  Epilobium canum subsp. latifolium M. S. Taylor 1982-8-16 5017 Butte S side of jct of Big Kimshew Creek and Bald Mt-Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City. 1432 Comment
  JEPS110127  Epilobium canum subsp. latifolium Lowell Ahart 2006-9-28 13386 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
  CHSC102957  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2009-7-9 16003 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
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC25258  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1977-6-26 1375 Butte In tiny creek along s side of Ponderosa Way, ca. 2 mi e of Cohasset. 609 Comment
  CHSC113487  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2014-7-13 19653 Butte East part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS104196  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  UC873150  Epilobium densiflorum Lewis S. Rose 1939-6-11 39276 Butte 6 mi e Honcutt 137 Comment
  SEINET12194727  Epilobium glaberrimum M. S. Taylor 1978-1 1726 Butte on N side of Butte Creek, ca 0.12 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd 1524 Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  UC1594693  Epilobium hallianum Lowell Ahart 1992-7-21 6803 Butte on sides of a snow lake on s side of Hollow Coon Hollow (about 2 air mi ne of Philbrook Reservoir) 1737 Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC70339  Epilobium minutum R. A. Schlising 1980-6-14 3709 Butte NE of Oroville at Little Bald Rock. 1051 Comment
  SBBG32323  Epilobium minutum L. S. Rose 1963-6-2 Butte 2 mi S of Pulga, N Fork of Feather River 579 Comment
  CHSC28378  Epilobium obcordatum M. S. Taylor; J. Jokerst 1979-7-21 2149 Butte Humboldt Peak, at Humboldt Summit. 2151 Comment
  CHSC45336  Epilobium obcordatum Vernon Oswald 1983-8-17 987 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  UC177594  Epilobium obcordatum H. M. Hall 1914-7-27 9793 Butte Butte Mt. 2072 Comment
  CHSC38887  Epipactis gigantea Vernon Oswald 1983-6-2 605 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  CAS-BOT-BC57996  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  UC600577  Equisetum hyemale subsp. affine H. F. Copeland 1920-5-23 226 Butte Jonesville Comment
  CHSC33114  Equisetum telmateia subsp. braunii M. S. Taylor 1981-5-15 3740 Butte Both sides of 22N92 between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 929 Comment
  CHSC66857  Eragrostis hypnoides Vernon H. Oswald 1996-9-30 8292 Butte Northern Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. On the margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  CHSC97418  Eragrostis pectinacea var. pectinacea Robert Fischer 2006-6-18 1022 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS116076  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC42695  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1987-7-1 3054 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek. 1828 Comment
  CHSC26700  Ericameria bloomeri M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1492 Butte On both sides of Scott Johns Rd, ca. 2 mi s of its jct with Old Humboldt Rd, se of Jonesville. 1981 Comment
  CHSC48159  Ericameria bloomeri Vernon Oswald 1985-8-28 1933 Butte Humboldt Rd. 0.2 mi s of Humboldt Summit. 2005 Comment
  UC1609016  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  CHSC48144  Erigeron annuus Vernon Oswald 1987-5-26 2928 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC48145  Erigeron annuus V. Oswald; L. Ahart 1988-6-17 3391 Butte North side of the dam at Lost Creek Reservoir. 1005 Comment
  CHSC72743  Erigeron canadensis Lowell Ahart 1998-11-11 8063 Butte About 3/8 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CAS-BOT-BC295467  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CHSC48150  Erigeron lassenianus var. lassenianus Vernon Oswald 1984-7-2 1340 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  CHSC113812  Erigeron philadelphicus Lowell Ahart 2013-4-20 18554 Butte On the west side of Wilson Creek, about 1/4 mile southwest of the barn, about 1/4 mile west of the Honcut Cemetery, about 3 miles (air) northeast of Honcut. 42 Comment
  CHSC116319  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte In crack between building and pavement, building of Casey's Auto Repair, east of the intersection of Spruce Street and Washington Street, Gridley. 27 Comment
  HSC97192  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte South side of O'Brien Rd., about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CAS-BOT-BC216047  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville in the Sierra foothills on the banks of Butte Creek 76 Comment
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  UC1562368  Eriodictyon californicum Lowell Ahart 1990-4-28 6468 Butte in the borrow area about 4/10 mi w of Pacific Heights Road about 4 1/2 mi sw Oroville (1/4 mi s of the Feather River); s of the Feather River, sw of Oroville 30 Comment
  CHSC116207  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 300 yards north of the County Road, 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. 1252 Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  SEINET7545219  Eriogonum marifolium E. B. Copeland 1930-1 410 Butte Above Jonesville 610 Comment
  CAS-BOT-BC269841  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC11923  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. Along Butte Creek. 1500 Comment
  CHSC52111  Eriogonum nudum var. pubiflorum Steven Triano 1988-9-18 255 Butte Dry, rocky roadside along Hwy. 32 ca 7.2 mi e of its jct. with Hwy. 99. 463 Comment
  CHSC44161  Eriogonum roseum Vernon Oswald 1988-7-22 3612 Butte Harter's Cherokee Ranch located on the s side of Hwy 99 between Hwy 149 and Dry Creek. Locally abundant on Cherokee gravel along the ranch road paralleling Dry Creek. 53 Comment
  CHSC45487  Eriogonum roseum Lowell Ahart 1975-9-4 982 Butte Along the edges of Ponderosa Way, about 2 miles south-west of Feather Falls, about 1 1/2 miles north-west of the Ponderosa Dam. 396 Comment
  SEINET8339333  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  CAS-BOT-BC267908  Eriogonum umbellatum Lowell Ahart 1985-7-9 5113 Butte About 140 yards south of the dirt road, Lumpkin Ridge, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 975 Comment
  CHSC41365  Eriogonum umbellatum var. ahartii R. A. Schlising 1981-6-22 4105 Butte E part of county NE of village of Feather Falls at Lumpkin Ridge. 1280 Comment
  CHSC99542  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tributary to West Branch Feather River); about 2.9 air km east of Magalia and 0.8 km east of Sawmill Peak. Open rocky serpentine sloping to the west. 951 Comment
  LA203593  Eriophyllum lanatum E. B. Copeland; 1930-7-11 492 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CAS-BOT-BC308166  Eriophyllum lanatum var. grandiflorum Clarence R. Quick 1952-6-25 52 -69 Butte 21.5 miles from Chico on Deer Creek Road Comment
  CHSC22941  Eriophyllum lanatum var. grandiflorum Robert A. Schlising 1963-6-7 2614 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC101281  Erodium brachycarpum Lowell Ahart 2009-4-3 15527 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS119787  Erodium brachycarpum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17998 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCD103123  Erodium brachycarpum A. A. Heller 1914-3-13 11201 Butte Hills 8 miles north of Oroville. Comment
  CHSC30865  Erodium cicutarium J. D. Jokerst 1979-3-23 1157 Butte Adjacent to intermittent creeks. Top of North Table Mt., ca 100 m N of the intersection of Cherokee Rd and E edge of Mt. 396 Comment
  JEPS115287  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  RSA715577  Erodium cicutarium L. Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCR237331  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18749 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  JEPS17429  Eryngium aristulatum var. aristulatum W. L. Jepson 1934-5-4 16608 Butte 1 1/2 mi. s. Nord (near Sacramento R., swales of Pine Creek) Comment
  CHSC60968  Erysimum capitatum var. capitatum Lowell Ahart 1993-7-6 7058 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC29285  Erythranthe arvensis R. A. Schlising 1980-4-14 3563 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC1760  Erythranthe cardinalis V. Holt 1932-10-28 Butte Near Richardson Springs. 152 Comment
  CAS-BOT-BC153856  Erythranthe glaucescens Dr. E. B. Copeland 1903-5-15 3177 Butte Chico Comment
  CHSC101675  Erythranthe glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC44822  Erythranthe glaucescens R. Banchero 1980-4-26 130 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  CHSC1768  Erythranthe guttata E. Stilson 1897-6-1 Butte Comment
  SEINET8370238  Erythranthe primuloides A. A. Heller 1914-6-22 11497 Butte Chico meadows. 1219 Comment
  CHSC43763  Erythranthe tilingii Vernon Oswald; Lowell Ahart 1987-7-1 3081 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CHSC32641  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3457 Butte N side of spur rd, ca. 1/10 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  CHSC79622  Erythronium multiscapideum G. F. Hrusa 1997-5-1 13720 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CAS-BOT-BC504533  Erythronium multiscapideum Lowell Ahart 1972-3-22 s.n. Butte Along Swedes Flat Road, Bangor 1500 Comment
  SEINET12054425  Erythronium multiscapideum Unknown 1890-1 s.n. Butte no further locality Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 Comment
  CAS-BOT-BC402644  Eschscholzia caespitosa Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  CAS-BOT-BC402650  Eschscholzia caespitosa Mrs. C. C. Bruce 1897-4-1 2019 Butte Nelsons bar Comment
  CHSC31778  Eschscholzia lobbii L. Ahart 1974-4-14 409 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC419500  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  UC85481  Eschscholzia lobbii Mrs. R. M. Austin Feb. 1896 Butte Chico Plains Comment
  CHSC28492  Eucephalus breweri M. S. Taylor; J. Jokerst 1979-7-21 2165 Butte On trail to Humboldt Peak, on Humboldt Summit. 2133 Comment
  SEINET194884  Eunanus douglasii A. A. Heller 1938-1 15025 Butte On the treeless undulating plain of Table Mt. Comment
  CHSC60824  Euonymus occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1993-6-22 5564 Butte Long Ravine W of Stirling City, along Hendricks Canal ca. 0.25 mi S of the Diversion Dam. 950 Comment
  CHSC33167  Euphorbia lathyris R. E. Preston 1981-5-6 65 Butte At 728 W. First Ave., Chico. Comment
  CHSC48380  Euphorbia peplus Vernon Oswald 1987-3-26 2297 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. Between some ponds in dredger tailings. 73 Comment
  SEINET10453778  Euphorbia serpillifolia Lowell Ahart 1985-11-7 Ahart 5230 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC101135  Euphorbia spathulata Lowell Ahart 2009-5-15 15701 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CAS-BOT-BC458287  Euthamia occidentalis John Thomas Howell 1961-9-22 36728 Butte Sierra Nevada: Bank of Feather River, Oroville 53 Comment
  CHSC112786  Festuca myuros Lowell Ahart 2013-5-18 18701 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CAS-BOT-BC282529  Festuca subbiflora Lowell Ahart 1984-6-10 4702 Butte Along the road about 2 miles southwest of the Forbestown Diversion Dam, northeast of Forbestown 700 Comment
  CHSC73890  Festuca subuliflora B. Castro 1997-6-13 738 Butte Mtn. House Proposed SIA. Ca 1.5 air mi NE of Brush Creek and 0.4 air mi ESE of Mtn. House, where Mtn House Creek crosses under USFS Rd 22N54. On E side of road by creek. 1051 Comment
  RSA337396  Festuca subuliflora L. Ahart, P. Ahart 1984-6-10 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC42109  Foeniculum vulgare Lowell Ahart 1986-10-16 5405 Butte Along Pondrosa Way, about 3/4 mile south-west of the Ponderosa Dam, about 3 1/4 miles north-west of Forbestown. 396 Comment
  CHSC42909  Foeniculum vulgare Lowell Ahart 1987-7-12 5820 Butte Along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 64 Comment
  CDA5502  Foeniculum vulgare L. Ahart 2001-6-13 8816 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  JEPS103419  Frangula rubra Lowell Ahart 2002-6-2 9679 Butte Meadow, S of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 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-BC55727  Frangula rubra subsp. rubra Sally Bianco 1995-9-7 1025 Butte Concow area, between Jarbo Gap & Concow, along Deadwood Rd. 579 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
  CHSC52182  Fraxinus dipetala L. P. Janeway 1989-5-19 3266 Butte Serpentine outcrop and open area near upper SE branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CHSC109647  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, aobut 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC41917  Fremontodendron californicum Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC28967  Fritillaria affinis J. D. Jokerst 1980-2-24 450 Butte E branch of Mud Cr ca 0.5 mi E of Richardsons Springs. 243 Comment
  CHSC52379  Fritillaria affinis B. Castro 1991-3-3 439 Butte Above bend in Cohasset Rd ca 3.5 mi E of its jcn with Richardson Sprs Rd. 268 Comment
  UC143424  Fritillaria affinis Mrs. R. M. Austin Feb, 1896 15 Butte Comment
  SBBG17373  Fritillaria eastwoodiae M. Vincent 1962-4-15 179 Butte Coutolenc Rd, 0.5 mi N of Magalia Comment
  NY319697  Fritillaria phaeanthera L. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CAS-BOT-BC508152  Fritillaria recurva A. A. Heller 1939-4-26 s.n. Butte Near the Diamond Match plant at Stirling City 1066 Comment
  SEINET10469524  Fritillaria recurva Mary Susan Taylor 1981-4-8 Taylor 3506 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC99098  Fumaria officinalis Elena Alfieri 2008-2-22 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Located on a shaded, southeast-facing slope overlooking the Big Chico Creek picnic area, and adjacent to Wildwood road (just before it dead ends); north side of Lindo Channel near its beginning at Big Chico Creek. 85 Comment
  CHSC27938  Galium bifolium M. S. Taylor 1978-7-19 1763 Butte On E side of Upper Scotts John Rd, ca. 3 mi N of its jct with Scotts John Rd, ca. 7 mi NE of Jonesville. 1889 Comment
  CHSC65586  Galium bolanderi L. P. Janeway 1995-6-1 4770 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  JEPS18286  Galium bolanderi Rimo Bacigalupi with H. Whisler 1957-7-26 6037 B Butte along Humbug Rd. 2.2 mi sw Nimshew (at eastern canyonside of creek, roadbank); Butte Creek 609 Comment
  UC1609000  Galium grayanum Lowell Ahart 1993-9-8 7165 Butte on n side of ridge about 1/2 mi e Snow Mountain 2103 Comment
  HSC66332  Galium grayanum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3202 Butte Humboldt Peak, on W side and top of peak 2155 Comment
  JEPS107282  Galium murale Lowell Ahart 2005-4-14 11705 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley 28 Comment
  SEINET10902549  Galium murale Mary Susan Taylor 1978-4-14 Taylor 1551 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
  CHSC75302  Galium parisiense Lowell Ahart 1999-5-24 8076 Butte Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  JEPS120950  Galium parisiense Lowell Ahart 2013-4-20 18549 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  SEINET10500636  Galium parisiense Mary Susan Taylor 1979-5-6 Taylor 2000 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC7105  Galium porrigens var. tenue Harley J. Parmenter 1969-2-11 7 Butte 40 yds. N of the entrance to Burtons Mesa. 298 Comment
  SEINET10500737  Galium porrigens var. tenue Mary Susan Taylor 1981-2-11 Taylor 3380 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  UC1523190  Galium trifidum M. S. Taylor and Lowell Ahart 1981-8-15 4187 Butte ca. 14 mi ne Stirling City (e side of Humbug Rd, meadow on n side of lake); Jonesville SW Quad, Snag Lake, Montane Meadow 1737 Comment
  CHSC78270  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte Edges of a pond, on the southeast side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  CHSC108171  Gastridium phleoides L. P. Janeway 2011-8-18 10666 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  CHSC93870  Gastridium phleoides Lowell Ahart 2006-6-9 12652 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  SEINET3441865  Gastridium phleoides Unknown 2003-6-29 10319 Butte Brownsville, Brownsville, about 1 air miles west, east side of Ponderosa Way, about 1.5 miles north of La Porte Road 700 Comment
  SEINET11688674  Gastridium phleoides Unknown 1982-1 424 Butte at beginning of North Rim Trail, upper Bidwell Park ca 1 mi from East Ave, Chico Comment
  CHSC51363  Gaultheria ovatifolia Vernon H. Oswald; Lowell Ahart, L. Hanson 1990-8-14 4440 Butte 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
  CHSC90296  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  RSA718074  Gayophytum racemosum L. Ahart 2006-7-16 13005 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. 1525 Comment
  UCD105746  Genista monspessulana Michael A. Vincent; Ethan H. Freid 1998-4-6 8109 Butte Table Mountain. Along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  UC600681  Gentianopsis simplex H. F. Copeland 1930-7-24 1317 Butte Jonesville Comment
  CHSC113197  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards west of the old road, west of the first area to park, about 3 1/2 miles (air) northeast of Oroville Dam. 252 Comment
  CDA38765  Geranium carolinianum L. Ahart 2012-4-3 17945 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC38453  Geranium carolinianum Vernon Oswald 1983-4-20 352 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.8 mi e of the power lines. 182 Comment
  CHSC672  Geranium carolinianum V. Holt 1935-3-30 Butte Chico Creek ridge. 365 Comment
  CHSC99324  Geranium carolinianum Lowell Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  CHSC99325  Geranium carolinianum Lowell Ahart 2008-5-12 14753 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
  RSA0028179  Geranium carolinianum C. C. Bruce 1897-06 1931 Butte Little Chico. Comment
  CHSC109069  Geranium dissectum Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17856 Butte On the south side of the paved road, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  SEINET10495123  Geranium dissectum Mary Susan Taylor 1982-4-28 Taylor 4353 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC3975  Geranium molle J. W. Cherry 1967-3-26 Butte Common in open grassy areas along either side of Bidwell Park road, .3 mi. e. of Salmon Hole. 170 Comment
  RSA0028538  Geranium molle L. P. Janeway 2005-3-15 8358 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 kilometers northeast of Bruce Road. 134 Comment
  POM161688  Geum macrophyllum E. B. Copeland 1929-7-25 s.n. Butte Jonesville. 1500 Comment
  SEINET10483301  Geum macrophyllum Mary Susan Taylor 1978-6-24 Taylor 1639 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET10496736  Gilia capillaris Lowell Ahart 1985-7-9 Ahart 5105 Butte About 1 mile south of the Ponderosa Dam Across the South Fork of the Feather River, about 3 miles north-west of Forbestown. Comment
  CHSC42073  Gilia capitata subsp. pedemontana J. P. Arts 1986-4-18 15 Butte Ca. 1 mile s of the covered bridge on Humbug Rd., ca. 5 ne of Chico on the n side of the road. 91 Comment
  CHSC36069  Gilia tricolor subsp. tricolor Daniel K. Parker 1981-4-21 4 Butte Ca. 75 m w Cherokee Road, 9.4 km ssw Cherokee. Meadow. 380 Comment
  UCD80196  Githopsis pulchella subsp. campestris CNPS SN Foothill Team 2005-5-27 SNNR 0205 Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek. 201 Comment
  SEINET10464754  Githopsis specularioides Lowell Ahart 1985-5-15 Ahart 4967 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. 503 Comment
  CDA3379  Glinus lotoides L. Ahart 2002-10-17 9982 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  RSA770103  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  SEINET10839142  Gnaphalium microcephalum var. thermale Mary Susan Taylor 1975-9-12 Taylor 908 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC28830  Gnaphalium palustre J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 422 Butte Top of North Table Mt, ca 1.0 mi n of jct east edge of Mt and Cherokee Rd. 381 Comment
  CHSC90820  Gnaphalium palustre Lowell Ahart 2005-5-2 11753 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  SD5486  Gnaphalium palustre E. B. Copeland 1931-7-18 Butte Jonesville 1500 Comment
  SEINET10872104  Gnaphalium purpureum Lowell Ahart 1984-6-8 Ahart 4660 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC48989  Gratiola ebracteata Vernon Oswald 1987-8-10 3200 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  CHSC88245  Gratiola ebracteata Lowell Ahart 2004-7-11 11228 Butte Below the high water line, on the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  HSC32651  Gratiola ebracteata Gary S. Lester 1974-4-20 96 Butte Skyway Blvd., 1 mi. E of US 99 61 Comment
  CAS-BOT-BC305285  Grindelia hirsutula Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  JEPS113882  Grindelia hirsutula L. P. Janeway 2007-6-26 1656 Butte Northern High Sierra Nevada; Along Hwy 70 2.1 road mi NE of Jarbo Gap, at the Plumas Natonal Forest sign; 1.6 air mi NW of North Fork Feather River. At the E-facing canyon edge of the road pullout area. 633 Comment
  CHSC344  Grindelia hirsutula var. davyi E. Walker 1932-6-15 Butte Durham. Comment
  CHSC97029  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-19 9061 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  NY43531  Grindelia hirsutula var. hirsutula S. Bianco 1995-9-23 1030 Butte Along dirt trail that extends from Ishi Trail in Concow 762 Comment
  JEPS119728  Gymnocladus dioicus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chico. Comment
  JEPS102325  Gypsophila elegans Lowell Ahart 2001-4-15 8726 Butte 4 air miles SW of Gridley (N side of dirt road E of the large pump, S side of Evans-Reimer Rd, 1 mi E of Pennington Rd, Gray Lodge Waterfowl Management Area) Comment
  CDA42772  Hedypnois cretica L. Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC109657  Hedypnois cretica Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico. 237 Comment
  CAS-BOT-BC309401  Helenium puberulum Lowell Ahart 1987-6-9 5721 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC43611  Helianthella californica var. nevadensis Vernon H. Oswald 1983-8-17 989 Butte Trail between Humboldt Summit and Humboldt Peak, ne of Jonesville. At the base of slope. 2023 Comment
  UCR219090  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC75989  Heliotropium europaeum Lowell Ahart; Vernon H. Oswald 1999-8-13 8163 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
  CHSC46334  Hemizonella minima Lowell Ahart 1989-5-29 6325 Butte Near the dirt road, east of Mooreville Ridge, about 2 air miles north of the Lost Creek Dam, south of the west branch of Pinkard Creek. 1188 Comment
  CAS-BOT-BC314999  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte North of Bean Creek Road about 0189 mile south-east of Little Bald Rock 975 Comment
  CDA7021  Hemizonia congesta subsp. luzulifolia A. C. Browne 1951-8-23 Butte Robinson s Corners, Gridley-Oroville Road. 0 Comment
  RSA34036  Hemizonia congesta subsp. luzulifolia A. A. Heller 1941-9-13 16310 Butte Oroville Road 9 miles from Chico. Comment
  CAS-BOT-BC388569  Herniaria hirsuta L. P. Janeway 1993-6-3 4367 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  CHSC113538  Herniaria hirsuta var. hirsuta Lowell Ahart 2014-9-23 19862 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 90 Comment
  CHSC84022  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 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
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  CHSC29783  Heterocodon rariflorum M. S. Taylor 1980-5-27 2684 Butte At the foot of Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC39533  Heterocodon rariflorum Lowell Ahart 1983-6-12 4040 Butte Along the edge of aroad near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10906090  Heterocodon rariflorum Lowell Ahart 1973-5-29 Ahart 246 Butte Peter Ahart Ranch, Honcut 46 Comment
  CHSC34709  Heterotheca oregona var. compacta M. S. Taylor 1980-9-26 3340 Butte In Lindo Channel, jct of Mangrove and Cohasset, in Chico. 45 Comment
  RSA0062978  Heuchera micrantha var. erubescens James R. Shevock 1972-5-19 1785 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  UC897798  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC43670  Hoita macrostachya Vernon Oswald 1983-6-14 685 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. 207 Comment
  POM27988  Hoita macrostachya C. C. Bruce 1897-06 1980 Butte Little Chico. Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  CHSC27242  Holcus lanatus P. Moyer 1972-4-9 170 Butte Chico State campus. Railroad tracks service road. 60 Comment
  CHSC4308  Holcus lanatus R. L. Smith 1966-5-20 4 Butte Butte Creek Canyon, Honey Run Rd. 4 mi. e of S Skyway. Comment
  CHSC78407  Holcus lanatus Lowell Ahart 2000-7-17 8594 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC85909  Holodiscus discolor L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-25 7744 Butte Northern Sierra Nevada Foothills. Steep north-facing slope just above North Fork Feather River arm of Lake Oroville; 1.9 km north of Bloomer Hill, 2.9 km east of mouth of West Branch Feather River arm of Lake Oroville. 290 Comment
  UCD135731  Holozonia filipes Bruce G. Baldwin; Gerald D. Carr, Lowell Ahart 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch. Comment
  SEINET10506845  Hordeum Mary Susan Taylor 1981-5-1 Taylor 3582 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC102174  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2009-5-30 15778 Butte On dry soil, broad open drainage in oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SEINET10960312  Hordeum murinum Ernenwein 1983-4-20 ERNENWEIN 141 Butte Open grassy field in between forks of Humboldt Rd. Ca. 1.7 miles E of US Hwy 99 E of Chico. Shallow soil on volcanic rock. Comment
  CHSC100994  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 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
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  CAS-BOT-BC536587  Horkelia californica var. elata John Thomas Howell 1975-7-21 51334 Butte Sierra Nevada. North Branch Feather River 304 Comment
  UCD113498  Horkelia fusca var. tenella H. F. Copeland 1928-8-2 371 Butte Jonesville. 1524 Comment
  CHSC1558  Horkelia tridentata P. Delaplane 1965-5-4 50 Butte Found at E end of Lake Concow on Concow Road. 1219 Comment
  RSA451574  Horkelia tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville. 1524 Comment
  CHSC64086  Hosackia crassifolia B. Castro; R. A. Schlising, L. P. Janeway 1988-7-30 285 Butte On SW-facing slope above Coon Hollow, along sides of dirt road (USFS Rd 26N74) ca. 1.6 mi NE of the creek. 1813 Comment
  CHSC45282  Hosackia crassifolia var. crassifolia Vernon Oswald 1987-6-23 3014 Butte High Lakes Rd. 2.1 mi (odometer) n of Philbrook Rd. 1828 Comment
  CHSC61316  Hosackia crassifolia var. crassifolia Lowell Ahart 1993-7-29 7126 Butte Along a logging road, about 1/8 mile north-west of the Snow Mine, about 2 1/2 miles north-east of the Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC60977  Hosackia incana Lowell Ahart 1993-6-26 7024 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  JEPS113728  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
  CAS-BOT-BC400827  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mountain Olive Ranch north of Oroville Comment
  CAS-BOT-BC400831  Hypericum anagalloides A. A. Heller 1914-8-6 11637 Butte Sierra Nevada at Chico Meadows 1219 Comment
  JEPS66777  Hypericum anagalloides H. R. Dutton 1921-1 Butte Chico, Hooker Oak Comment
  UCD169859  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
  CHSC20491  Hypericum perforatum M. S. Taylor 1975-6-25 792 Butte Abundant along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  SEINET10472156  Hypericum perforatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4072 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  SEINET7073600  Iris A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC133510  Iris Saichi Kawahara 1968-5-4 391 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CAS-BOT-BC133558  Iris hartwegii Lewis S. Rose 1937-6-10 37373 Butte Forbestown 838 Comment
  SEINET6193256 Image available Iris hartwegii R. G. Bevers 1968-1 27 Butte 13 mi E of Chico on hwy 32 at the entrance to a ranch Comment
  RSA366799  Iris hartwegii M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC2812  Iris macrosiphon David Prall 1965-3-14 Butte At roadside ca. 3 yds. west of Neal Rd. 2 miles east of Highway 99E. 152 Comment
  CHSC36899  Iris macrosiphon M. C. Earley 1982-4-18 16 Butte Ca. 8.5 mi. ese of Chico. 114 Comment
  UC1377667  Iris tenuissima John Ingram and Arlynn Ingram 1960-4-6 500 Butte s of Paradise (at Endicot Springs on Neal Road); Endicot Springs Comment
  CHSC81194  Isoetes howellii J. Trizzino 2001-4-25 58 Butte Oro-Chico Highway, 0.25 mi west of Neal Road, wet ditch on north side of road. 54 Comment
  SEINET10530327  Isoetes nuttallii Mary Susan Taylor 1980-5-31 Taylor 2773 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10530332  Isoetes nuttallii Mary Susan Taylor 1980-3-28 Taylor 2404 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CAS-BOT-BC112443  Isolepis cernua Lowell Ahart 1984-5-12 4605 Butte Peter Ahart Ranch, About 2 mi N and 1/2 mi E of Honcut, about 12 mi S of Oroville. Comment
  CHSC42380  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC61344  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC48180  Jensia rammii Vernon Oswald 1988-5-17 3310 Butte Forbestown Rd. 2.2 mi e of Oroville-Quincy Hwy (Hwy 162). Along the edge of the road. 426 Comment
  CHSC99485  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC42950  Juncus acuminatus Lowell Ahart 1987-7-17 5821 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC61345  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte on the west side of Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS113326  Juncus articulatus L. P. Janeway, Marcia Waterway, Martin Lechowicz 2006-8-3 8823 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing creek. Comment
  UC1609045  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte about 6 air mi ne of Feather Falls (on the w side of Fall River, about 100 yards w of the bridge across Fall River); Fall River 1036 Comment
  CHSC7194  Juncus balticus M. I. Moore 1969-4-26 16 Butte Upper Bidwell Park, ca. 1000 yds. nw of Salmon Hole - Big Chico Creek. 106 Comment
  CHSC74020  Juncus balticus subsp. ater B. Castro 1998-6-18 793 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. Moist meadow, at end of old dirt rd at E edge of old homestead site. 929 Comment
  CHSC78327  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte On the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-norhing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  UCSB45762  Juncus bufonius var. bufonius Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; 6 miles north on Derrick Road from Table Mt. Road Comment
  UC1609050  Juncus bufonius var. occidentalis Lowell Ahart 1993-8-29 7119 Butte about 6 1/2 mi ne of Stirling City (about 2 1/2 mi ne of Bald Mountain) 1584 Comment
  CHSC26805  Juncus capitatus M. S. Taylor 1978-5-7 1601 Butte Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC30508  Juncus capitatus N. E. H. Prouty 1980-4-25 145 Butte Off of Serene Lane. 82 Comment
  CHSC40348  Juncus capitatus Ahart; Jokerst 1985-5-10 4957 Butte Small meadow, near the washed out dam across the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC61350  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7109 Butte On the sides of a small stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UCD141428  Juncus cyperoides L. Ahart 1982-6-1 3527 Butte east side of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 2000 Comment
  CDA38393  Juncus dubius L. Ahart 2000-6-17 8485 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  CHSC26750  Juncus effusus subsp. pacificus M. S. Taylor; M. Hayes 1977-8-16 1449 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CDA36730  Juncus effusus subsp. pacificus Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, and Peter Zika 2011-8-5 16759 Butte 6.5 miles from the junction (which is at the edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of gravel Lumpkin Road. Comment
  CHSC78336  Juncus ensifolius Lowell Ahart 2000-6-27 8523 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  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
  UC600804  Juncus ensifolius H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 Comment
  CHSC40351  Juncus exiguus Lowell Ahart 1985-6-30 5086 Butte 10 yards south of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC32585  Juncus kelloggii L. Ahart 1980-5-11 2240 Butte In a pasture field on the w side of the Pentz-Magalia Hwy, ca. 1/2 mi nw of Kunkle Reservoir, ca. 3 mi s of Paradise. 500 Comment
  JEPS94188  Juncus leiospermus Lowell Ahart 1998-4-29 7953 Butte ca. 7 mi. n. Oroville (n.e. of the large parking area on North Table Mt., e. side of Cherokee Rd.); North Table Mt. 426 Comment
  SEINET10938189  Juncus leiospermus Mary Susan Taylor 1984-4-6 Taylor 5407 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
  CHSC47563  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte On the bottom of a vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  OBI32868  Juncus leiospermus var. leiospermus Barbara Ertter, Jeffrey L. Strachan, Lowell Ahart 1980-5-7 3309 Butte North Table Mountain 5 airmiles N of Oroville, wet soil along streamlet trodden by cattle and near parking area. 396 Comment
  UC600810  Juncus nevadensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 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
  JEPS114979  Juncus oxymeris Lowell Ahart 2008-6-13 14817 Butte E side of a small meadow, bottom of an old gold mined area, about 150 yds W of the cemetary, about 150 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 311 Comment
  JEPS117318  Juncus parryi Lowell Ahart 2010-9-28 17258 Butte About 10 yards west of Big Kimshew Creek, meadow, 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
  CHSC38923  Juncus patens Vernon Oswald 1983-5-18 506 Butte Upper Bidwell Park, Chico, 75 ft s of Upper Park Rd. and 200 ft e of Parking Area I (0.6 mi e of the power lines). 103 Comment
  CHSC102621  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 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. 59 Comment
  RSA0080124  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte About 1/4 mile east of Little Bald Rock, about 2 miles (air) northeast of Oroville. 1009 Comment
  CHSC113971  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte On the sides of a small drainage, below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. 225 Comment
  JEPS121895  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte Below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC80921  Juniperus californica Arthur Menzies 1969-8-1 s.n. Butte Near Gillem's Bluff, Little Butte Creek, Nelson West Rd & Chico-Butte City Hwy. Comment
  SEINET10531637  Juniperus californica Mary Susan Taylor 1980-2-23 Taylor 2321 Butte T21N R2E SE section 11. In Foothill savannah, ca 15 m NW of Neal Road. ca 3 km E of Highway 99, ca 1.5 km E of Neal Road dump, ca 11 km S of Chico. Comment
  CAS-BOT-BC236762  Keckiella breviflora Lowell Ahart 1976-6-4 s.n. Butte Peter Ahart Ranch, near North Honcut Creek 45 Comment
  RSA34926  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  RSA592529  Keckiella breviflora subsp. glabrisepala S. O. Mattoon 1970-6-12 18 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE Cohasset. 671 Comment
  UCD80781  Keckiella corymbosa CNPS SN Foothill Team 2005-7-13 Survey Butte North Table Mountain. Comment
  SEINET12765113  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table mountain, about 8 miles (air) northeast of Stirling City.; 0 1372 Comment
  CHSC66678  Kickxia elatine Vernon H. Oswald 1996-7-17 8063 Butte Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  SEINET9773735 Image available Kickxia elatine Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CDA6294  Kickxia elatine L. Ahart, Vernon Oswald 1999-8-13 8132 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 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
  CHSC26818  Koeleria phleoides M. S. Taylor 1978-5-7 1594 Butte On e side of Williams Rd, ca. 1/2 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  CHSC42372  Koeleria phleoides Lowell Ahart 1987-5-6 5557 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC23405  Kumlienia hystricula M. S. Taylor 1976-3-6 1009 Butte Along Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi e of Forbestown Rd, ca. 12 mi e of Oroville. 1097 Comment
  CAS-BOT-BC340329  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CHSC26744  Kyhosia bolanderi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1469 Butte Meadows, around Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CHSC94351  Kyhosia bolanderi Lowell Ahart 2006-7-25 13064 Butte West 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
  CDA20618  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilatatum, 282 Chico Rd, Oroville. 0 Comment
  CHSC75309  Kyllinga brevifolia Lowell Ahart 1999-5-24 8082 Butte Along the steps on the south side of the building, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  JEPS115631  Lactuca serriola Lowell Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville 31 Comment
  UC828864  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham Comment
  UCD133539  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CHSC108176  Lagophylla glandulosa L. P. Janeway 2011-8-17 10658 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850 m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  JEPS19943  Lagophylla glandulosa R. F. Hoover 1936-5-21 1169 Butte 7 mi n Chico Comment
  SFV4001  Lagophylla glandulosa M. L. Vincent 1960-9-7 112 Butte Sierra Nevada On dry bluff overlooking Butte Creek Canyon. 3 miles west of Paradise on the Skyway. 215 Comment
  CAS-BOT-BC341302  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CAS-BOT-BC341307  Lagophylla glandulosa H. M. Hall 1930-8-10 12872 Butte Roadside near Oroville Comment
  CAS-BOT-BC341311  Lagophylla glandulosa H. M. Hall 1914-8-1 9828 Butte Foothills of Sierra Nevada, near Bidwell's Bar, (Mt. Ida) Comment
  SEINET10839203  Lagophylla glandulosa Mary Susan Taylor 1980-7-6 Taylor 3058 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC30546  Lamarckia aurea J. D. Jokerst 1980-3-23 93 Butte Along sides of Hwy 70 at its jct with the West Branch of Feather River. Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  CAS-BOT-BC337910  Lasthenia californica E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  CHSC7100  Lasthenia californica Nancy Wiseman 1969-4-17 Butte 50 yds n of Skyway ca. 1 mi e of Chico. Comment
  RSA715477  Lasthenia californica L. Ahart 2005-5-11 11791 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  JEPS119708  Lasthenia fremontii Lowell Ahart 2012-5-2 17963 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC42085  Lasthenia glaberrima John E. Hunter 1986-4-12 49 Butte Vacant lot within City of Chico, ca. 45 m nw of the intersection of East Ave. an Ceanothus. 62 Comment
  CHSC29843  Lathyrus hirsutus K. R. Stern 1980-6-22 6660 Butte S bank of Gold Run Creek, SE of Shippee Rd. 45 Comment
  JEPS95616  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte 3 1/2 air miles NW of Oroville (N of the corral, on N side of the bend in Cottonwood Road, about 1/4 mi W of Hwy 70) 57 Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  CAS-BOT-BC213286  Lathyrus sulphureus Lowell Ahart 1983-5-28 4025 Butte Along the trail to the over-look at Feather Falls, 3 1/2 miles north of Feather Falls 600 Comment
  CAS-BOT-BC213293  Lathyrus sulphureus Mrs. C. C. Bruce 1898-5-1 2446 Butte Paradise Comment
  CHSC39292  Lathyrus sulphureus Lowell Ahart 1983-7-29 4227 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC82700  Lathyrus tingitanus Tara Morgan 2002-5-7 56 Butte Was seen in the Feather River Canyon just east of Highway 70 near the West Branch Bridge of the West Branch Feather River/Lake Oroville. It was all around the edges of the rest area parking . 318 Comment
  JEPS124205  Lavandula Lowell Ahart 2015-4-11 20027 Butte About 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south Oroville. Comment
  CAS-BOT-BC321777  Layia fremontii L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CAS-BOT-BC534638  Lemna minuta Lowell Ahart 1975-1-9 s.n. Butte Sierra Nevada. 2 miles north and 3 miles east of Honcut. Foothill woodland. 200 Comment
  CDA42868  Leontodon saxatilis subsp. longirostris L. Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  JEPS118322  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville 42 Comment
  CHSC51221  Lepechinia calycina Lowell Ahart 1979-5-29 1892 Butte Growing east of the Pentz Magalia Highway, about 1/8 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  JEPS63255  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 miles Southwest of Forest Ranch. 548 Comment
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CHSC35633  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  CHSC46258  Lepidium latipes var. latipes V. Oswald; L. Janeway 1989-4-17 3735 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  CHSC4516  Lepidium nitidum C. Glascock 1965-3-2 271 Butte At side of Chico Canyon Rd. ca. 1/2 mi. from its intersection with E 8th St., Chico. Comment
  CAS-BOT-BC89882  Lepidium nitidum Lowell Ahart 1980-3-11 2039 Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC103657  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 -A Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA715854  Lepidium nitidum var. nitidum L. P. Janeway 2005-3-10 8348 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  RSA767799  Lepidium nitidum var. nitidum L. Ahart 2010-3-14 16571 Butte About 50 yards north of the wash, Peter Ahart Ranch, about 1.5 miles north and 1.25 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CDA43062  Lepidium strictum L. P. Janeway 2010-11-17 10233 Butte Sacramento Valley.; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). Comment
  CHSC31647  Lepidium strictum L. Ahart 1971-4-13 70 Butte Peter Ahart Ranch, Honcut. Along edge of roads. 45 Comment
  SEINET10874435  Lepidium strictum Lowell Ahart 1983-4-10 Ahart 3929 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC110334  Leptochloa fusca subsp. fascicularis B. Castro 2011-10-19 1915 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek ca 0.6 mi downstream (W) of its crossing under the Cohasset Hwy bridge and ca 500 ft E of its confluence with Sheep's Hollow. Depression in low flat floodplain on N side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  RSA468553  Leptosiphon androsaceus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  RSA715849  Leptosiphon bicolor L. P. Janeway 2005-3-10 8353 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CHSC28978  Leptosiphon bolanderi R. A. Schlising 1980-3-17 3514 Butte E of Chico and SW of Paradise, along Skyway, on cliffs above Butte Creek. 213 Comment
  CHSC45457  Leptosiphon bolanderi Lowell Ahart 1980-6-1 2363 Butte On the east side of Kunkle Reservoir, about 2 miles south-east of Paradise. 518 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC105814  Leptosiphon harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC1272  Leptosiphon parviflorus J. Gulick 1929-4-18 Butte Rifle Range near Chico Creek. 106 Comment
  RSA725055  Leptosiphon parviflorus L. P. Janeway 2006-4-30 8562 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC28735  Lessingia nana Robert Schlising 1979-10-4 3492 Butte Old archery range in Bidwell Park, Chico, just e of lake. Comment
  JEPS120029  Lessingia nana Lowell Ahart 2012-8-22 18419 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  CAS-BOT-BC341781  Lessingia nemaclada Lowell Ahart 1980-9-10 2643 Butte 7 miles east of Milsap Bar 1200 Comment
  SEINET11793728  Lessingia nemaclada Unknown 1975-1 978 Butte along edge of Ponderosa Way, about 2 air mi SW of Feather Falls, about 2 mi S of Lumpkin Rd 396 Comment
  CAS-BOT-BC342059  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  SBBG32474  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  CHSC42945  Leucothoe davisiae Lowell Ahart 1987-7-8 5817 Butte Along a side road near Walker Plains Road, about 1 1/2 miles north-east of Coyote Gap, about 6 miles north-east of Pulga. 1341 Comment
  POM132236  Leucothoe davisiae Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC6594  Lewisia rediviva G. Nielsen 1968-4-20 Butte On Table Mt. 5 mi s of Cherokee on rd. over Table Mr. 609 Comment
  SEINET10572650  Lewisia rediviva Mary Susan Taylor 1973-1 Taylor 14 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
  CAS-BOT-BC444475  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-22 3050 Butte Upper Coon Hollow; just below saddle between Coon Hollow and Chips Creek. 1920 Comment
  SEINET3887041  Lilaea scilloides Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 226 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 41 Comment
  CHSC46241  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-26 1085 Butte Ca 7.5 km (air) ese of Jonesville (where Humboldt Road crosses Jones Creek). Ca. 0.45 km e of meadow where Humbug Summit Road crosses Willow Creek. 1890 Comment
  CAS-BOT-BC110626  Limnanthes alba Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC62828  Limnanthes alba Ella Icard 1893-4-1 Butte Comment
  RSA176424  Limnanthes alba A. A. Heller 1926-4-12 s.n. Butte 8 miles north of Chico. Comment
  CHSC1006  Limnanthes alba subsp. alba A. Goekler 1929-4-23 Butte Hooker Oak road. 60 Comment
  CHSC65643  Limnanthes alba subsp. alba Mark S. Cederborg 1995-4-12 19 Butte Fernandez Land Grant. In drainage on se side of Wilbur Rd ca. 1.9 mi s of Hwy 162, ca. 6 mi sw of Oroville. 44 Comment
  CHSC54166  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 6648 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC55716  Limnanthes douglasii subsp. nivea Jennie J. DuBose 1991-4-2 3 Butte Ca. 45 m w of Table Mountain Cherokee Road. 3.75 km n of Oroville on n Table Mountain. 366 Comment
  SFV2130  Limnanthes douglasii subsp. rosea M. L. Vincent 1962-4-17 203 Butte Sierra Nevada Cherokee Road near Table Mountain. Comment
  CAS-BOT-BC45924  Limnanthes floccosa subsp. californica L. P. Janeway; Pat Kelly 1991-3-31 3867 Butte Between Hwy 32 and Dead Horse Slough, and from 600 to 1200 ft west of Bruce Road Comment
  CHSC102870  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-24 Butte Northern Sacramento Valley. Vernal pool swale complex on a ridge of basalt on the east side of the Potter Road bike path and north of Humbug Road. The vernal pool/swale complex flows into a drainage that continues west into the Little Chico Creek Overflow Channel. 135 Comment
  CHSC29027  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-20 487 Butte Ca 50 m NW of the jct of Skyway and Bruce Rd (ca 0.5 mi E of Hwy 99). Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  CHSC67543  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-16 3048 Butte Type Locality: W and adjacent to Hwy 99, S and adjacent to Gold Run Creek. Comment
  CHSC67552  Limnanthes floccosa subsp. californica James D. Jokerst; Greg Sutter 1991-3-26 3224 Butte Rancho Arroyo, NE Chico. Comment
  RSA754581  Linanthus filipes L. Ahart 2009-4-22 15586 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
  SEINET7072745  Linanthus filipes A. G. Vestal 1963-5-9 s.n. Butte About 3.5 miles north of Oroville. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 623209mE, 4374845mN. Coordinate datum: NAD 27.) Comment
  SEINET10496799  Linanthus filipes Mary Susan Taylor 1974-4-20 Taylor 181 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  UC1185290  Linanthus parviflorus H. E. Brown 1896-10-2 185 Butte near Oroville 53 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  CHSC113360  Lindernia dubia var. anagallidea Lowell Ahart 2014-4-25 19400 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC42116  Lindernia dubia var. anagallidea Lowell Ahart 1986-11-9 5444 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
  JEPS120608  Lindernia dubia var. anagallidea Lowell Ahart 2013-11-13 19237 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CDA13285  Linnaea borealis var. longiflora G. F. Hrusa, T. D. Wilfred 1996-7-9 13133 Butte Plumas National Forest; along Jordan Ck, at top of waterfall above confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp Comment
  CDA4731  Linum bienne L. Ahart 2000-5-21 8375 Butte On the north margin of Table Mountain Boulevard, about 300 yards southeast of Garden Drive, about 1/10 mile northwest of the Thermalito Diversion cut, about 2 miles north of Oroville. Comment
  CHSC112925  Linum bienne B. Castro; Sabrina Bell 2012-6-14 1929 Butte Sacramento Valley. 1.0 air mi E of Hwy 99 and 0.9 mi S of Hwy 162E on peninsula at E edge of Thermalito Afterbay. 42 Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  CHSC52179  Linum lewisii var. lewisii L. P. Janeway 1989-5-13 3238 Butte Rocky Ridge; where powerlines cross Ponderosa Way (Rim Rd) ca 2 mi SE of Concow Rd. 960 Comment
  CHSC112327  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 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
  CHSC75980  Lipocarpha micrantha Lowell Ahart 1999-8-13 8180 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
  CHSC76428  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte On the west side of a large pond, 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
  CHSC44087  Lithocarpus densiflorus L. P. Janeway 1987-6-26 2301 Butte On Granite Ridge, along Concow Rd. 2.0 mi N of Rag Dump. 1295 Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  NY43775  Lithocarpus densiflorus var. densiflorus S. Bianco 1995-11-3 1049 Butte 4236 Kakini Rd, E of Concow Rd off Yellowwood Rd (Private land holding) 762 Comment
  CHSC9278  Lithophragma D. C. Burns 1971-4-2 111 Butte Ca. 30 yds. s side of Cohasset rd. ca. 4.0 mi w of intersection of Cohasset rd. and Vilas rd. 304 Comment
  CAS-BOT-BC432266  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  JEPS5851  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte 6 1/4 mi e Oroville (J. M. Kehlor ranch); e of Oroville Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CHSC49846  Lithophragma parviflorum var. parviflorum Vernon Oswald; Lowell Ahart 1990-4-9 4155 Butte Feather Falls Trail between Frey Creek and Wagners Valley, just s of the 1.5 mile marker. 548 Comment
  CHSC87426  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-20 116 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along Guardian Trail, south of Pine Trail. UTM: 10609476E 4405711N. 384 Comment
  CHSC7108  Lithophragma parviflorum var. trifoliatum James M. Watson 1969-3-31 4 Butte 4.3 mi e of upper Bidwell Park entrance 100 yds. s of road at edge of canyon. 213 Comment
  CAS-BOT-BC428443  Lithophragma trifoliatum Forest Sheehan 1970-4-7 s.n. Butte Table Mt. near Oroville Comment
  CHSC4300  Lolium multiflorum V. Hagaman 1966-4-27 Butte Chico State Campus. Comment
  CHSC6662  Lolium multiflorum Marilyn Lee 1968-3-15 112 Butte East side of Cohasset Road, 100 yards north of entrance to Chico Airport. Comment
  UCD73061  Lomatium caruifolium var. denticulatum 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
  UCD80001  Lomatium marginatum CNPS SN Foothill Team 2006-5-23 SNNR 0784 Butte BLM Parcels near Paradise. 648 Comment
  JEPS14508  Lomatium marginatum var. marginatum Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5612 Butte 0.7 mi S of Oregon City (along Oregon gulch road) Comment
  CHSC40437  Lomatium utriculatum Lowell Ahart 1985-5-15 4976 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
  JEPS26742  Lomatium utriculatum P. C. Hutchison 1961-6-9 2092 Butte 7 mi. s. Jarbos Gap (n. fork Feather R. along Hwy. U.S. Alt. 40); n. fork Feather R. Comment
  SEINET10454535  Lomatium utriculatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3477 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  SEINET10454536  Lomatium utriculatum Mary Susan Taylor 1980-4-27 Taylor 2569 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CAS-BOT-BC240444  Lonicera hispidula Lowell Ahart 1985-6-30 5082 Butte East of the road to the Forbestown Res. Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC240450  Lonicera hispidula Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC42018  Lonicera hispidula Lowell Ahart 1975-9-4 983 Butte West of Ponderosa Way, near Sunset Hill, about 3 miles west of Forbestown. 426 Comment
  CAS-BOT-BC240683  Lonicera interrupta Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut. Near Honcut Creek 50 Comment
  CHSC44147  Lonicera involucrata var. involucrata V. Oswald; L. Ahart 1988-7-26 3631 Butte Snow Mt. Region located ca. 6 air mi SE of Jonesville. At the base of a cliff along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  SEINET957207  Lotus balsamiferus Lowell Ahart 1987-1 5804 Butte On dry bare distrubed soil, near Big Bar Mountian Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  UC81117  Lotus crassifolius Mrs. R. M. Austin Jun 1899 390 Butte n of Chico (Humboldt road) Comment
  RSA303521  Lotus humistratus J. R. Shevock 1972-5-19 1771 Butte Hwy 70, approx 10 mile N of Lake Oroville. 549 Comment
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  SEINET12161683  Lotus micranthus B. L. Wiley 1975-1 6 Butte 5.4mi up Cherokee Rd from junct w/ Table Mtn Blvd 488 Comment
  POM16592  Lotus oblongifolius var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  JEPS103533  Lotus purshianus var. purshianus Lowell Ahart 2002-6-21 9750 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  JEPS98532  Lotus purshianus var. purshianus Lowell Ahart 2000-7-18 8600 Butte Near a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS95926  Ludwigia palustris Lowell Ahart 1999-8-22 8186 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
  CDA38131  Ludwigia palustris L. Ahart 1998-6-3 8013 Butte West 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. Comment
  CHSC61054  Ludwigia peploides subsp. peploides Vernon H. Oswald 1993-7-29 5736 Butte Gray Lodge Wildlife Management Area W of Gridley, 0.3 mi S of Rutherford Rd. on the first levee road E of the headquarters complex. In a drainage ditch. 19 Comment
  RSA31851  Lupinus albicaulis subsp. purpurascens A. A. Heller 1941-5-22 16138 Butte About a half mile west of Jarboe Pass on state Highway #24. Comment
  CHSC38504  Lupinus albifrons Vernon Oswald 1983-4-1 252 Butte Upper Bidwell Park, Chico, s of the creek and e of the footbridge near the 4th green of the Golf Course. 91 Comment
  UC726692  Lupinus albifrons A. A. Heller 1919-6-7 13223 Butte Snow Mountain; ; Snow Mt., Butte Co. Comment
  CDA38768  Lupinus albifrons var. albifrons L. Ahart 2012-4-2 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10452023  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 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
  SEINET10484603  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23n,r5e,sec.18 nw 1/4. Pulga sw quad. Corolla pink. E side of road 23no2, ca 2 Miles e of rag dump, ca 6 air mile ne of magalia. Yellow pine forest, granitic Soil. Assoc.; Arctostaphylos truei, claytonia rubra 1189 Comment
  SD241816  Lupinus bicolor G. K Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley: Middle Honecut Road, 1.5 miles east of CA-70, ESE of Gridley (Honcut 7.5'Q) 17 Comment
  CHSC38505  Lupinus bicolor var. tridentatus Vernon Oswald 1983-3-6 120 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). Growing along the edge of Upper Park Rd. 219 Comment
  CHSC82216  Lupinus bicolor var. tridentatus Lowell Ahart 2002-4-14 9488 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  HSC38055  Lupinus densiflorus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2463 Butte Beside SR 191 just N of its junction with SR 70 Comment
  SEINET10450558  Lupinus formosus Lowell Ahart 1984-6-8 Ahart 4682 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  CHSC84887  Lupinus grayi R. D. Fischer 2003-6-6 8 Butte Northern Sierra Nevada. Off hwy. 32 between the Butte Meadows turn-off and Potato Patch and 5.6 miles north of hwy. 32 on county rd. 27N08 (K-Line). There is a primitive campground along Deer Cr. right after crossing the single lane bridge. Found on the banks of road-cuts at campground turn-off. 899 Comment
  CHSC111346  Lupinus polycarpus Lowell Ahart 2012-5-2 17952 Butte On damp dark clay soil, along the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  RSA718075  Lupinus polyphyllus var. burkei L. Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, above 5 miles (air) northeast of Butte Meadows. 1570 Comment
  POM196153  Lupinus sellulus var. artulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  SEINET10490230  Lupinus sellulus var. artulus Edwin B. Copel 1931-7-3 Copeland 651 Butte Jonesville. Colby Canyon, in dry and barren openings. 1600 Comment
  CHSC2373  Lupinus stiversii R. Carter 1965-6-1 219 Butte Found ca. 30 mi. E of Oroville on Bald Rock Rd., .2 mi. E of intersection with Zinc Rd., on S side of road. 883 Comment
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 Comment
  SEINET10452164  Lupinus vallicola Mary Susan Taylor 1976-3-30 Taylor 1042 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  JEPS117180  Luzula cascadensis Lowell Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  UC1609496  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  SEINET10472473  Luzula comosa Mary Susan Taylor 1981-4-8 Taylor 3514 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC94348  Luzula comosa var. laxa Lowell Ahart 2006-7-16 12970 Butte In the 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
  CHSC42522  Luzula macrantha Lowell Ahart 1987-5-12 5635 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC94067  Luzula macrantha R. Fischer 2005-3-9 745 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from the grassy edge of the riparian zone. 219 Comment
  JEPS110179  Luzula macrantha Lowell Ahart 2006-4-28 12547 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 318 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
  UC1609080  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC102975  Lycium barbarum Lowell Ahart 2009-7-4 16000 Butte Under the palm trees, at parking lot 2, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 22 Comment
  CHSC43263  Lycopersicon esculentum Lowell Ahart 1987-9-24 5904 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS117550  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 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
  UC1609425  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  SEINET10874054  Lythrum hyssopifolia Mary Susan Taylor 1982-5-22 Taylor 4502 Butte T17N R2E nw/ne sec 19. Pennington quad. Graylodge Wildlife Refuge, near parking lot 6 on Rutherford Rd, e of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC65401  Lythrum portula Vernon Oswald 1983-7-21 892 Butte Upper Bidwell Park, Chico, along the edge of Horeshoe Lake. 100 Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  RSA4140  Madia bolanderi E. B. Copeland 1930-8-4 S.N. Butte Jonesville 1500 Comment
  CAS-BOT-BC342722  Madia elegans Clarence R. Quick 1952-7-1 52 -130 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  RSA746979  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2007-10-7 13078 Butte along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  RSA755346  Madia elegans subsp. densifolia L. Ahart 2009-7-9 16015 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) W of Highway 32, about 10 miles NE of Chico. 204 Comment
  RSA726308  Madia exigua L. Ahart 2007-6-12 14071 Butte In a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CAS-BOT-BC344309  Madia exigua A. A. Heller; H. E. Brown 1902-5-12 5532 Butte Grade between Clear Creek and Paradise Comment
  SEINET10871971  Madia exigua Lowell Ahart 1985-5-15 Ahart 4986 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC113512  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  RSA725049  Madia madioides L. P. Janeway 2007-6-11 9038 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67, 0.6 km NW of Lumpkin Road, 2.3 km W of Feather Falls town site. 777 Comment
  CHSC104820  Madia subspicata Lowell Ahart 2010-6-1 16751 Butte On the south side of the Guardians Trail, about 100 yards east of the end of Centennial, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC20525  Magnolia kobus Pamela Caldwell 1972-3-4 Butte CSUC campus. SE corner of Cafeteria Annex. Comment
  CAS-BOT-BC512735  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CDA13274  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13122 Butte Plumas National Forest; N ridge above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC50101  Malacothrix floccifera Vernon Oswald 1990-4-24 4169 Butte Lime Saddle Recreation Area on th West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  CHSC62530  Malacothrix floccifera B. Castro 1993-7-27 486 Butte Ca 3 mi NW of Brush Creek, along USFS Rd 22N34 as it parallels French Creek, ca 0.5 mi SW of the low-water crossing at the confluence of French and Peavine Creeks. 618 Comment
  CHSC38554  Malva nicaeensis Vernon Oswald 1983-4-25 366 Butte Upper Bidwell Park, Chico, at the edge of Parking Area C at the w end of Horseshoe Lake. 100 Comment
  CDA5025  Malva parviflora L. Ahart 2003-5-9 10122 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  CHSC38549  Malva parviflora Vernon Oswald 1983-5-2 406 Butte Upper Bidwell Park, Chico, along n-w edge of Hooker Oak Recreation Area. 79 Comment
  SEINET10448087  Marah fabacea Mary Susan Taylor 1973-1 Taylor 57 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC32667  Marah watsonii M. S. Taylor 1981-3-24 3443 Butte S side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  SEINET10448098  Marah watsonii Mary Susan Taylor 1979-3-20 Taylor 1960 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC51060  Marrubium vulgare Pauleen Broyles 1987-4-29 1016 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Near Pine Creek just below its confluence with Singer Creek. Comment
  CHSC12135  Marsilea vestita B. A. Jenkins 1972-5-1 2 Butte 75 yds se of Humboldt Road-Fir Street Junction, Chico. Comment
  CHSC94376  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC20050  Matricaria discoidea M. S. Taylor 1975-4-11 456 Butte Along Upper Bidwell Park Road, near Salmon Hole, Upper Bidwell Park, Chico. Comment
  CHSC56848  Matricaria discoidea R. L. Ondricek-Fallscheer 1983-5-8 169 Butte Driveway in front of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 188 Comment
  UCD95459  Meconella californica R. N. Bowman 1977-3-30 1350 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  SEINET10906952  Medicago lupulina Mary Susan Taylor 1975-6-25 Taylor 797 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
  SEINET12155162  Medicago orbicularis P. L. Ricker 1912-1 3958 Butte Chico Comment
  CHSC31876  Medicago polymorpha L. Ahart 1976-5-2 1086 Butte North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  UCD107844  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC32123  Medicago praecox L. Ahart 1977-5-2 1344 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  SEINET12155152  Medicago truncatula P. L. Ricker 1912-1 3962 Butte Chico Comment
  CAS-BOT-BC271134  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  UC1609072  Melica aristata Lowell Ahart 1993-6-26 7022 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge, on e side of dirt road); Mooreville Ridge 1188 Comment
  CAS-BOT-BC269390  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia 731 Comment
  CHSC35966  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC82664  Melica californica Tara Morgan 2002-4-23 37 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate trail of Highway 32. 414 Comment
  CHSC82477  Melica harfordii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9739 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC99646  Melica torreyana H. Koeth 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). 471 Comment
  CHSC102626  Melilotus albus Lowell Ahart 2009-6-19 15934 Butte West of the trail, on the east side of Big Chico Creek, about 40 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
  CHSC38474  Melissa officinalis Vernon Oswald 1983-7-15 871 Butte Upper Bidwell Park, Chico, beside the trail along the n side of Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC52227  Mentha X gracilis L. P. Janeway 1988-5-30 2719 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 3/4 mi NE of the power lines. 152 Comment
  CHSC103163  Mentha arvensis Lowell Ahart 2009-11-19 16543 Butte North of the rose thicket, 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
  CHSC38475  Mentha canadensis Vernon Oswald 1983-7-22 895 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. Bed of Chico Creek. 85 Comment
  CHSC94013  Mentha canadensis R. Fischer 2004-6-12 685 Butte Collected from Bidwell Park near the bottom of 10 Mile House Road, east side of Big Chico Creek, near north end of park property. Plants were growing at the edge of perennial meadow drainage. 219 Comment
  CHSC38540  Mentzelia laevicaulis Vernon Oswald 1983-8-2 946 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  UC179654  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Montains 1554 Comment
  CHSC38678  Micranthes californica Vernon Oswald 1983-1-30 53 Butte Upper Bidwell Park, Chico, along the North Rim Trail east of the power lines at about the 1120 ft. contour. Comment
  CHSC30653  Micranthes fallax M. S. Taylor 1979-5-4 1989 Butte Along Millsap Bar Rd, 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  JEPS120045  Micranthes fragosa Lowell Ahart 2012-4-9 17825 Butte Seeps on the southeast bank of Big Chico Creek, about 20 yards northwest of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  CHSC3350  Micranthes integrifolia Robert L. Smith 1966-3-4 43 Butte Upper Bidwell Park, 7 mi. NE of Chico. Comment
  CHSC4219  Micranthes integrifolia R. Carter 1966-3-13 294 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon; on slope ca. 25 yds. up slope on S side canyon. Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  CAS-BOT-BC348319  Micropus californicus Lowell Ahart 1980-5-4 2168 Butte Thermalito 65 Comment
  CHSC101220  Micropus californicus var. californicus G. F. Hrusa; R. Gross, L. Houser 2008-4-11 17094 Butte Open, chaparral slopes with woodland on N faces immediately below Indian Valley Reservoir spillway into North Fork Cache Creek tailrace. 396 Comment
  UC34479  Micropus californicus var. californicus F. Z. Hoffman 1898-3-19 Butte Chico Comment
  CAS-BOT-BC348881  Microseris douglasii subsp. douglasii E. B. Copeland 1899-4-22 s.n. Butte Chico Comment
  CHSC31661  Microseris elegans L. Ahart 1978-4-27 1674 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  CHSC46335  Microseris elegans Lowell Ahart 1989-4-26 6203 Butte Along the edges of a dirt road, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SD87566  Microsteris gracilis E. B. Copeland 1931-6-29 Butte Jonesville. In sandy open spaces by Butte Creek. 1500 Comment
  SEINET10837198  Microsteris gracilis Mary Susan Taylor 1975-3-10 Taylor 409 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
  UC196052  Mimulus aurantiacus var. grandiflorus A. A. Heller 1914-5-18 11407 Butte near Forest Ranch; Sierra 609 Comment
  UC943806  Mimulus aurantiacus var. grandiflorus H. E. McMinn 1946-5-10 5503 Butte ca. 9 mi e Oroville Comment
  UC103641  Mimulus aurantiacus var. grandiflorus Mrs. R. M. Austin 235 Butte Comment
  UC196163  Mimulus bicolor A. A. Heller 1914-5-17 11338 Butte near Forest Ranch 731 Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UC1609349  Mimulus floribundus Lowell Ahart 1993-5-10 6934 Butte about 3/4 mi n and 2 1/4 mi e Honcut (about 12 mi se of Oroville); Peter Ahart Ranch 36 Comment
  POM43712  Mimulus glaucescens C. C. Bruce 1897-02 2106 Butte Little Chico. Comment
  POM5060  Mimulus glaucescens A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  RSA178677  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte Near the Neale Grade about 5 miles from Paradise Comment
  RSA189359  Mimulus glaucescens L. S. Rose 1967-5-8 s.n. Butte 1 mile south of Pulga, North Fork, Feather River 427 Comment
  UCD122721  Mimulus glaucescens Kirsten L. Tarp 1981-4-20 7 Butte Bidweel Park e of Chico, n of Chico municipal golf course. 97 Comment
  SEINET12332655  Mimulus glaucescens Unknown 1977-1 17 Butte ca 25 ft N of Wildrose Rd, ca 8 mi N of Manzanita Ave, ca 1 mi N of Chico 70 Comment
  SEINET12332656  Mimulus guttatus D. E. Young 1983-1 18 Butte North Table Mountain, 5 mi W of Cherokee Rd & 1.3 km SW of Oregon Gulch Rd, 7.2 km E of Hwy 70 & 9.2 390 Comment
  UCD122636  Mimulus guttatus L. Ahart 1978-5-1 1677 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 50 Comment
  JEPS94733  Mimulus kelloggii Lowell Ahart 1998-6-3 7971 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC426957  Mimulus moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville 1550 Comment
  CDA41843  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte East roadside of Highway 32, ca. 1 mile northeast of road Forest Ranch. Comment
  CHSC33113  Mimulus moschatus M. S. Taylor 1981-5-15 3747 Butte 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; near shady creek area. 1158 Comment
  CHSC94622  Mimulus moschatus Lowell Ahart 2006-9-11 13294 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
  CDA13266  Mimulus torreyi G. F. Hrusa, T. D. Wilfred 1996-7-9 13114 Butte Plumas National Forest; Above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET12331809  Mimulus torreyi L. Ahart, Ahart, P. 1984-1 4725 Butte about 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC20118  Minuartia californica M. S. Taylor 1975-4-26 522 Butte In vernal pool, on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  SEINET7067143  Minuartia douglasii A. G. Vestal 1947-4-30 s.n. Butte Lava at Table Mountain northeast of Oroville. Coordinate datum: NAD27. Comment
  UCD80208  Minuartia douglasii CNPS SN Foothill Team 2005-3-31 SNFN 0031 b Butte CDFG North Table Mountain Wildlife Area, located in the Table Mt. Ecological Reserve on a 'lava finger' in the middle of the northern portion of the reserve. 364 Comment
  RSA424440  Minuartia douglasii Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -11 Butte Magalia, near Skyline road to Paradise 640 Comment
  UC392216  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CDA3371  Mollugo verticillata L. Ahart 2002-10-17 9983 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CDA3373  Mollugo verticillata L. P. Janeway, B. Castro 1999-6-4 6451 Butte Sacramento Valley; East side of the Sacramento River 1.4 km southeast of the Ord Ferry Bridge. Comment
  SFV3186  Monardella glauca M. L. Vincent 1960-9-7 100 Butte Sierra Nevada Old Stage Road near Stearn Road, 3 miles south of Paradise. 530 Comment
  UC426945  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville 1550 Comment
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  SEINET8555279 Image available Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station Comment
  CHSC33108  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC31881  Montia fontana subsp. chondrosperma L. Ahart 1974-4-7 354 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC7114  Montia parvifolia Paul Kinnison 1969-5-6 11 Butte On Highway 70 e 200 yds. up Bear Creek where it hits the road. Just before the abandon tunnel. Comment
  CHSC109093  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17859 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 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
  CAS-BOT-BC260531  Muhlenbergia filiformis Lowell Ahart 1981-9-15 3168 Butte Along French Creek 1300 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
  JEPS120698  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  SD264  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville, open wet ground 1550 Comment
  UCD86613  Muhlenbergia filiformis A. A. Heller 1917-7-26 12832 Butte Butte Meadows. Comment
  CHSC110396  Muhlenbergia mexicana Lowell Ahart 2012-9-28 18471 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC275215  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  JEPS121900  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  UCD86781  Muhlenbergia minutissima E. B. Copeland 1929-7-29 85 Butte Lily Pond. Comment
  CHSC101163  Myosotis discolor Lowell Ahart 2009-5-15 15717 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
  CHSC90829  Myosotis discolor Lowell Ahart 2005-5-2 11756 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC20052  Myosurus apetalus var. borealis M. S. Taylor 1975-4-18 483 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99, ca. 5 mi n of Chico. Comment
  UCD150362  Najas guadalupensis subsp. guadalupensis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CHSC46197  Nama lobbii L. P. Janeway 1988-6-25 2857 Butte Along the Skyway w.4 mi N of Inskip; ridge top near Bottle Hill. 1554 Comment
  CAS-BOT-BC60371  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC34245  Navarretia capillaris M. S. Taylor 1981-8-16 4211 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 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
  UCR70853  Navarretia divaricata H. F. Copeland 1930-7-18 1334 Butte Jonesville 1524 Comment
  CHSC28797  Navarretia filicaulis J. D. Jokerst 1978-6-22 151 B Butte Adjacent to Jordan Hill Rd. Comment
  HSC104014  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  JEPS105972  Navarretia filicaulis Lowell Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 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
  SEINET179620  Navarretia filicaulis H. F. Copeland 1932-6-24 unknown Butte Near Hog Springs, about 5 miles north of Chico Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 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
  UC1719865  Navarretia heterandra David Fruchter 1979-9-18 177 Butte Oroville Airport Comment
  SEINET3696384 Image available Navarretia intertexta Lewis S. Rose 1933-5-27 33193 Butte Bangor. 267 Comment
  CHSC30683  Navarretia intertexta subsp. intertexta M. S. Taylor; L. Ahart, R. Schlising 1980-5-31 2758 Butte Kunkle Reservoir, e side, e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  UC1609318  Navarretia leptalea subsp. leptalea Lowell Ahart 1993-6-26 7035 Butte about 1 (air) mi nw Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); nw of Lost Creek Reservoir Dam, Mooreville Ridge, Jackass Fl 1158 Comment
  CHSC36432  Navarretia leucocephala D. H. Ikeda 1980-5-10 355 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  CHSC71121  Navarretia leucocephala subsp. leucocephala Jan Monelo 1989-4-26 18 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico; rim of drainage, ca 20 yds w of Hwy 99. 106 Comment
  JEPS117332  Navarretia pubescens Lowell Ahart 2010-6-20 16834 Butte About 3/8 miles 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 55 Comment
  CHSC91118  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
  SEINET12332661  Navarretia tagetina D. H. Ikeda 1980-1 351 Butte 0.4 mi W of intersection of Hwy 99 and Broyles Rd Comment
  RSA13527  Navarretia viscidula H. F. Copeland 1932-6-24 s.n. Butte Near Hog Springs, about 5 miles north of Chico, on the Humboldt Road Comment
  SEINET10464798  Nemacladus capillaris Rimo Bacigalupi, Whisler, Howard C. 1957-7-26 Bacigalupi 6042 Butte Along Humbug Road, about 3.1 miles below and south of Nimshew 366 Comment
  UC1562298  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 243 Comment
  UC1562431  Nemacladus interior Lowell Ahart 1990-5-25 6495 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (about 0.25 mi w of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 274 Comment
  NY337171  Nemophila fallax Mrs. C. C. Bruce 2037 Butte Comment
  CHSC65264  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  UC107252  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; near Clear Creek 53 Comment
  UC726902  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte Cohasset Road 121 Comment
  CHSC697  Nemophila menziesii E. Stilson 1897-4-1 Butte Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  UC196340  Nemophila menziesii A. A. Heller 1914-2-16 11179 Butte 8 mi n Oroville; n of Oroville Comment
  CDA5772  Nicotiana alata L. C. Going 1964-4-2 Butte 694 Roberts Road, Paradise. 0 Comment
  UCSB62940  Notholithocarpus densiflorus Sarr, Dan 1995-7-29 Butte 5 mi N of Forest Ranch 304 Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  CHSC46801  Nuphar lutea subsp. polysepala R. A. Schlising; P. Broyles 1986-8-5 4500 Butte NE of Snag Lake, and to W of Old Butte Creek House; small lake. 1822 Comment
  RSA0006688  Nuphar lutea subsp. polysepala E. B. Copeland 1930-6-29 415 Butte Jonesville. 1700 Comment
  CHSC2840  Odontostomum hartwegii David Prall 1965-4-25 27 Butte N side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  UC398696  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi. n. Chico (on Richardson Springs rd.) Comment
  UCD18873  Odontostomum hartwegii Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 182 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  CAS-BOT-BC171464  Oenothera campestris Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC48637  Oenothera elata subsp. hirsutissima Vernon Oswald 1987-6-12 2994 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). Along the river. 33 Comment
  UCD106936  Oenothera elata subsp. hirsutissima L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  UC1487207  Ophioglossum californicum Lowell Ahart 1982-12-1 3900 Butte 4 mi NE of Honcut ( Joie Osgood Ranch) 85 Comment
  CHSC26855  Oreostemma alpigenum var. andersonii M. S. Taylor; M. Hayes 1978-6-24 1667 Butte On N side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  SEINET10500393  Orobanche fasciculata var. franciscana Mary Susan Taylor 1978-5-6 Taylor 1621 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  CDA42032  Orobanche uniflora subsp. occidentalis H. K. Wagnon 1957-4-28 712 Butte About five miles north of Oroville on road to Cherokee. 0 Comment
  RSA633333  Orthocarpus attenuatus Michael A. Vincent, Ethan H. Freid 1998-4-6 8128 Butte Table Mountain. Comment
  SEINET4854291  Orthocarpus bicolor Unknown 1902-5-10 5519 Butte Berry Canyon, (near Clear Creek). Comment
  RSA325942  Orthocarpus campestris L. Ahart 1984-4-25 4585 Butte Peter Ahart Ranch, 2.5 miles Ne of Honcut, 12 miles S of Oroville, Valley Grassland. 50 Comment
  RSA325140  Orthocarpus lacerus M. S. Taylor, Vernon H. Oswald 1984-4-4 5393 Butte S side of Humbug road, 2 miles SW of Nimshew, 12 air miles NE of Chico. Comment
  CAS-BOT-BC6993  Orthocarpus lithospermoides var. bicolor Amos Arthur Heller; H. E. Brown 1902-5-10 5519 Butte Berry Canyon (Near Clear Creek) Comment
  UCD23268  Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station. Comment
  CHSC54296  Osmorhiza brachypoda Vernon H. Oswald; Lowell Ahart 1991-6-5 4651 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 762 Comment
  UC1586596  Osmorhiza brachypoda Vernon H. Oswald and Lowell Ahart 1991-6-5 4651 Butte ca 1.5 air mi nw Platte Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, w side of Hwy 32, between Forest Ranch and Lomo) 762 Comment
  CHSC42637  Osmorhiza chilensis Vernon Oswald 1984-4-9 1133 Butte Feather Falls Trail, 2.1 trail mi from the trail head at the end of Bryant Ravine Rd. 457 Comment
  SEINET10840954  Osmorhiza chilensis Mary Susan Taylor 1977-6-25 Taylor 1378 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC109003  Oxalis corniculata Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17919 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC21007  Oxalis corniculata M. S. Taylor 1975-4-6 438 Butte In lawn, e side of 1200 block of Arcadian, Chico. 60 Comment
  SEINET3441866  Oxalis radicosa Unknown 2003-4-30 10119 Butte Oroville, Oroville, about 5.5 air miles southwest, about 3/5 of a miles west of Pacific Heights Road, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area 30 Comment
  CAS-BOT-BC316896  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1954-5-31 54085 Butte Feather River Canyon, near Pulga 396 Comment
  CHSC101489  Packera eurycephala var. lewisrosei Samantha Mackey Hillaire 2008-6-12 1254 Butte Lassen National Forest, administered by Plumas National Forest. Powerline survey, on Rocky Ridge. East of intersection of Rim Road (23N06) and 23N06C. Approx. 1 airmile SSW of Pulga. Also T22N, R04E, S01. Area centered on roughly 631167.524638359, 4406717.59894074. 975 Comment
  CAS-BOT-BC317161  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 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
  CDA13901  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC253703  Panicum capillare Lowell Ahart 1981-8-15 3042 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  CHSC76314  Panicum capillare Lowell Ahart 1999-9-21 8281 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
  CHSC51293  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  UC1153811  Panicum dichotomiflorum subsp. dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 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
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  UCD77900  Parentucellia viscosa Robert E. Preston 2003-5-11 2131 Butte ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
  JEPS105999  Paronychia ahartii Lowell Ahart 2004-4-4 10709 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, cattle pasture, about 3 miles (air) west of Thermalito. Comment
  JEPS104347  Parvisedum pumilum Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  CHSC2171  Paspalum dilatatum D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  JEPS106506  Paspalum dilatatum L. P. Janeway 2004-6-20 8138 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek 59 Comment
  CHSC64076  Paulownia tomentosa B. Castro 1989-4-11 308 Butte On corner of 7th and Flume Streets at the edge of downtown Chico. Comment
  CAS-BOT-BC202818  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 450 Comment
  CHSC48900  Pectiantia pentandra Vernon Oswald; Lowell Ahart 1987-7-1 3087 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte- Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CHSC97020  Pedicularis racemosa L. P. Janeway 2007-7-23 9123 Butte Northern High Sierra Nevada. Plumas National Forest; north side of Cascade Creek about 0.2 km southwest of the Road 22N94 bridge. 1177 Comment
  SEINET10529978  Pellaea Mary Susan Taylor 1983-1-17 Taylor 5217 A Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC31462  Pellaea andromedifolia M. S. Taylor 1981-1-5 3370 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CAS-BOT-BC67789  Pellaea andromedifolia Lowell Ahart 1984-2-3 4495 Butte About 1/4 mile sout of Cox Lane, east of teh pole line tower, about 3 1/2 miles north-east of Honcut. 100 Comment
  CAS-BOT-BC67598  Pellaea mucronata Ahart; Jokerst 1985-3-24 4855 Butte Serpentine Point, west of Yankee Hill 550 Comment
  SEINET10529807  Pellaea mucronata Mary Susan Taylor 1980-4-6 Taylor 2431 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET10867065  Pellaea mucronata Mary Susan Taylor 1979-3-19 Taylor 1935 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
  CHSC11887  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville. 1750 Comment
  SEINET10547989  Penstemon gracilentus Mary Susan Taylor 1977-8-17 Taylor 1485 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
  UC887074  Penstemon heterophyllus var. purdyi A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road 3 mi from Chico; 3 mi from Chico Comment
  CHSC29802  Penstemon laetus var. leptosepalus M. S. Taylor; J. D. Jokerst 1980-6-14 2878 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  CHSC44697  Penstemon laetus var. leptosepalus R. Banchero 1980-6-14 229 Butte Along Hwy 162, 0.8 mi S of its jct with Bald Rock Rd, 0. mi N of the town of Berry Creek. 560 Comment
  NY604513  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  UC426948  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville 1550 Comment
  CHSC1872  Penstemon neotericus M. Underhill 1952-7-2 Butte 609 Comment
  CHSC31197  Penstemon neotericus M. S. Taylor; R. Schlising 1980-7-6 3078 A Butte On s side of Old Humboldt Rd., beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC44723  Penstemon neotericus R. Banchero 1980-6-26 265 Butte Along Humbolt Rd 3.1 mi SW of its jct with the Skyway, 1.9 mi NE of its jct with Hwy 32. 1365 Comment
  CHSC49033  Penstemon neotericus Vernon Oswald; Lowell Ahart 1987-7-1 3052 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek. 1828 Comment
  NY627283  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca. 16 km north of Forest Ranch, along east margin of Highway 32, ca. 15 m south of jct of Highway 32 and Butte Meadows Road. Butte Meadows Quadrangle, 15'. 1170 Comment
  CAS-BOT-BC245681  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  LA209542  Penstemon newberryi var. newberryi E. B. Copeland; 1930-7-6 458 Butte above Jonesville 1900.0 Comment
  CAS-BOT-BC245634  Penstemon personatus M. S. Taylor 1982-8-16 4998 Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1737 Comment
  UCD124114  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville. 1500 Comment
  SEINET10548098  Penstemon procerus subsp. formosus Mary Susan Taylor 1980-7-6 Taylor 3086 Butte T26N R4E nw sec 29, Butte Meadows quad; N side of Old Humboldt Rd, just W of Butte Meadows Ranger Station. With R.A. Schlising. 1341 Comment
  CHSC86081  Pentagramma pallida R. D. Fischer 2003-12-26 25 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. West side of Diversion Dam parking area. 231 Comment
  CHSC10703  Pentagramma triangularis Lowell Ahart 1971-3-17 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC30817  Pentagramma triangularis M. S. Taylor; J. D. Jokerst 1980-4-18 2516 Butte W side of Humbug Rd, ca. 1 mi s of Nimshew. 609 Comment
  HSC23499  Pentagramma triangularis M. Gregg 1966-3-7 30 Butte On Humbug Rd. off the Skyway to the covered bridge, on hill directly behind the old covered bridge, about 9 mi. from CSC campus Comment
  UCD137730  Pentagramma triangularis L. Ahart 1974-3-18 329 Butte Along North Honocut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34243  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte Along Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  SEINET12320811  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-1 2390 Butte Macabes Creek canyon, ca 100 ft E of Lumpkin Rd, ca 2.5 mi N of junction with Forbestown Rd 396 Comment
  CAS-BOT-BC77084  Pentagramma triangularis subsp. triangularis Saichi Kawahara 1968-5-4 378 Butte Paradise - James Ripley's property, Graham Road 640 Comment
  CHSC86076  Pentagramma triangularis subsp. triangularis R. D. Fischer; Paul Maslin 2003-12-24 18 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 150 yds. west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  CHSC36530  Perideridia bolanderi subsp. bolanderi L. Ahart 1982-6-4 3554 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  UC1390033  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5987 Butte 7 mi s Paradise Comment
  CHSC40232  Perideridia lemmonii Vernon Oswald 1985-7-2 1875 Butte Humboldt Rd. 0.4 mi e of its jct. with the Skyway (Bull Hill Rd.) in Butte Meadows. 1325 Comment
  RSA459082  Perideridia parishii subsp. latifolia M. B. Dunkle 1931-8-12 2624 Butte Paradise Valley Comment
  CHSC6631  Persicaria M. MacArthur 1968-6-17 298 Butte SE edge of Big Chico Creek below the Headhouse, Chico State College campus. 60 Comment
  CAS-BOT-BC413704  Persicaria hydropiper Lowell Ahart 1987-10-22 5921 Butte Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70 76 Comment
  CHSC55244  Persicaria hydropiperoides Lowell Ahart 1991-10-14 6715 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC55245  Persicaria hydropiperoides Lowell Ahart 1991-9-14 6716 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC42054  Persicaria lapathifolia Lowell Ahart 1986-11-9 5452 Butte On the bottom of a pond, about 1/10 mile sout of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC42055  Persicaria pensylvanica Lowell Ahart 1986-11-14 5457 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin road, about 6 miles south-west of Oroville. 36 Comment
  CHSC72252  Persicaria punctata Lowell Ahart 1998-9-11 8055 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC94595  Persicaria punctata Lowell Ahart 2006-9-11 13291 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS120009  Petrorhagia dubia Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17907 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  UC397060  Petrorhagia dubia Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  CHSC6003  Petunia M. MacArthur 1968-6-19 245 Butte In flr. bed ca. 20 ft. SE of main entrance to Administration bld., Chico State College. 60 Comment
  SEINET10546873  Phacelia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5228 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  POM73732  Phacelia cicutaria var. cicutaria C. C. Bruce 1897-05 1982 Butte Iron Canyon. Comment
  UC1047022  Phacelia corymbosa L. R. Heckard and J. R. Sweeney 1953-4-27 347 Butte along Feather River Hwy 2.5 mi below (sw) Pulga 487 Comment
  CHSC42159  Phacelia distans Kent Clement 1986-4-7 20 Butte On North Table Mountain, ca. 10 km m of Oroville, w of Cherokee Rd. 411 Comment
  JEPS104191  Phacelia distans Lowell Ahart 2003-4-8 10045 Butte About 40 yd and in the canyon w of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 314 Comment
  CHSC45936  Phacelia heterophylla subsp. virgata Lowell Ahart 1984-7-19 4722 Butte Along a logging road near the dirt road, about 1 1/2 miles southeast of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  UC426940  Phacelia procera E. B. Copeland 1930-7-11 447 Butte near Butte Creek; Jonesville 1550 Comment
  POM193436  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Near Butte Creek, Jonesville. 1550 Comment
  CDA34212  Phalaris paradoxa L. Ahart 2010-6-12 16808 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  CHSC10566  Philadelphus lewisii Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 213 Comment
  UC1392744  Philadelphus lewisii R. F. Hoover 1968-5-29 11136 Butte Cohasset Road Comment
  UC176134  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte 8 mi n Oroville (ditch along mountain); Table Mountain 182 Comment
  CHSC34716  Phlox speciosa subsp. occidentalis M. S. Taylor 1981-5-21 3779 Butte E side of Concow Rd, ca. 0.3 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 975 Comment
  POM225865  Phlox speciosa subsp. occidentalis J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  POM299255  Phlox speciosa subsp. occidentalis C. R. Quick 1941-6-8 41 -14 Butte Big Bar Mt. Meadow Comment
  SEINET7042407  Phlox speciosa subsp. occidentalis A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC85727  Phoradendron densum G. F. Hrusa; T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada. Near summit of serpentine slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 degrees 51' N; 121 degrees 34' W']. 750 Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  JEPS113582  Physalis lancifolia Lowell Ahart 2007-8-19 14494 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC100904  Physocarpus capitatus R. A. Schlising; R. Banchero 1981-5-16 4090 Butte Along Vilas Road, 2.2 miles east of its junction with Cohasset Road, in the village of Cohasset at the West Branch of Mud Creek.. 743 Comment
  HSC97070  Phytolacca americana L. Ahart 2004-9-28 11405 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  UCR188556  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CHSC32124  Pickeringia montana L. Ahart 1979-5-29 1909 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek, 2.5 mi ne of Paradise. 500 Comment
  CHSC28691  Pilularia americana M. S. Taylor 1979-5-6 2002 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC82289  Pilularia americana Lowell Ahart 2002-4-24 9525 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
  CHSC32747  Pinus attenuata M. S. Taylor; L. Hanson 1981-4-16 3548 Butte Both sides of rd 21N80, ca. 1 mi nw of its jct with Zink Rd, ca. 1.5 air mi nw of Big Bald Rock, ca. 2 air mi e of Lake Madrone. 883 Comment
  CAS-BOT-BC78359  Pinus contorta Lowell Ahart 1986-5-20 5275 Butte on the west side of the Sly Creek Reservoir, about 1 mile north of the Sly Creek Dam 1097 Comment
  NY61630  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  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
  CHSC96757  Piperia elongata Lowell Ahart 2007-5-29 13929 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC61359  Piperia transversa Lowell Ahart 1993-7-22 7070 Butte On the east side of the dirt road, about 1/4 mile north-west of Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  UC177514  Piperia transversa H. M. Hall 1914-7-29 9799 Butte Butte Meadows 1371 Comment
  CAS-BOT-BC254404  Piptatherum miliaceum Lowell Ahart 1981-9-26 3207 Butte 6 miles W of Chico 40 Comment
  CHSC43586  Pistacia atlantica Vernon Oswald 1987-4-29 2358 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  CHSC33914  Pisum sativum G. Glascock 1965-4-29 372 Butte Ca. 20 yds w of Mailbox (Rt. 4, Box 4972) on Old Quincy Rd. ca. 0.5 mi. e of Arbol Ave. SW side of road. Comment
  CAS-BOT-BC169829  Plagiobothrys M. S. Taylor 1975-4-29 541 Butte ca 100 yds. S of Pentz Rd, ca 1/4 mi E of Hwy 99, ca 15 mi S of Chico 30 Comment
  CHSC103719  Plagiobothrys austiniae Lowell Ahart 2010-5-14 16656 Butte In meadow east of 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
  CHSC111351  Plagiobothrys austiniae Lowell Ahart 2012-5-4 17982 Butte On damp bare soil, on the bottom and sides of a small vernal pool, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  UC398679  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte 7 mi n Chico; Rock Creek Comment
  HSC85966  Plagiobothrys fulvus J. Hunter 1986-3-5 21 Butte Ca. 1 km E Chico, 50 m S Hwy. 32 75 Comment
  JEPS117196  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  SEINET12275923  Plagiobothrys fulvus Unknown 3 s.n. Butte no further locality Comment
  CHSC29275  Plagiobothrys glyptocarpus R. A. Schlising 1980-4-7 3556 Butte NE of Bangor, ca 1.1 mi NE junction of Ord-Bangor Hwy, along LaPorte Road. Streamside. Comment
  CHSC46778  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 4590 Butte Near Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC115399  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2015-3-27 19974 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 397 Comment
  JEPS117191  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte On damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  JEPS94146  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte ca. 7 mi. (air) n. Oroville (ca. 0.5 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 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
  CHSC103675  Plagiobothrys shastensis Lowell Ahart 2010-4-30 16601 Butte Open are along a ridge, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC35068  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4018 Butte W of Oroville and SW of Thermalito, at S border of Oroville Municipal Airport; off Larkin Road, 1.2 mi S of jct with Hwy 162. Comment
  CHSC46767  Plagiobothrys shastensis Lowell Ahart 1979-5-12 1872 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS107359  Plagiobothrys shastensis Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  UC634851  Plagiobothrys stipitatus H. L. Mason 1927-5-9 3704 a Butte 12 mi w Oroville Comment
  CHSC103723  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16652 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
  CHSC77981  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte In the mudhole of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS104318  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-5-28 10229 Butte Center of a 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
  JEPS95869  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1999-5-21 8075 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  RSA0036030  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  RSA715885  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-4-2 11682 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  UCD73012  Plagiobothrys stipitatus var. stipitatus 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
  CHSC28590  Plagiobothrys tenellus M. S. Taylor 1974-3-3 68 Butte On Burton's Mesa, ca. 3 mi e of Chico on the Skyway to Paradise. 60 Comment
  CHSC29274  Plagiobothrys tenellus R. A. Schlising 1980-4-19 3567 Butte North of village of Feather Falls, along trail to Feather Falls (on Fall River) from ne. 792 Comment
  CDA25099  Planodes virginica L. Ahart 2001-4-27 8733 Butte Just northwest of the bridge across Wyandotte Creek, north of Lower Honcut Road, about 125 yards west of the railroad, about 1 1/4 miles east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. Comment
  SEINET10499839  Plantago bigelovii Lowell Ahart 1984-4-24 Ahart 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  SEINET10968935  Plantago bigelovii Mary Susan Taylor 1984-4-6 Taylor 5397 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
  CHSC20043  Plantago coronopus M. S. Taylor; R. Schlising 1975-4-18 481 Butte In road scraping, sw corner of Broyles Rd and Hwy 99, ca. 6 mi n of Chico. Comment
  CHSC90966  Plantago coronopus L. P. Janeway 2005-5-9 8385 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70 0.6 km southwest of Pentz Road. 207 Comment
  CHSC62364  Plantago elongata B. Castro 1990-3-31 418 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House. 297 Comment
  SBBG119748  Plantago elongata L. Ahart 2004-4-14 10741 Butte S side of Lower Honcut Rd, ca. 100 yds W of Wyandotte Crk, ca. 1/8 mi W of railroad, ca. 1.75 mi W of Honcut; T17N, R4E, S18, SW/4 27 Comment
  CHSC47464  Plantago erecta Lowell Ahart 1978-5-1 1697 Butte Growing in a farmed field, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC75389  Plantago erecta Jennifer Slater 1997-4-12 15 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  RSA756695  Plantago erecta Barbara J. Ertter, Linda Vorobik 1986-4-13 5881 Butte NE arm of Lake Mendocino NE of Ukiah. North side of Highway 20. 366 Comment
  CHSC1222  Plantago lanceolata R. M. Staley 1952-7-5 Butte Paradise. 579 Comment
  UC102803  Plantago lanceolata Mrs. R. M. Austin May 1896 290 Butte Little Chico Creek Comment
  SEINET10499811  Plantago lanceolata Mary Susan Taylor 1982-8-16 Taylor 4995 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CHSC38584  Plantago major Vernon Oswald 1983-6-14 684 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on edge of Chico Creek. 201 Comment
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  JEPS119629  Plantago major Lowell Ahart 2012-6-14 18191 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CHSC38585  Plantago virginica Vernon Oswald 1983-5-2 421 Butte Upper Bidwell Park, Chico, at the Police Pistol Range. 91 Comment
  CHSC30674  Platanthera leucostachys M. S. Taylor 1978-7-21 1816 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC40046  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte On the road to golf links near Chico. In the Quercus lobata belt Comment
  SEINET10905829  Plectritis ciliosa Mary Susan Taylor 1974-3-5 Taylor 76 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC111356  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  UC131905  Plectritis macrocera Mrs. R. M. Austin July 1896 824 Butte Colby Comment
  CDA13288  Pleuricospora fimbriolata G. F. Hrusa, T. D. Wilfred 1996-7-9 13136 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC40356  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 5148 Butte South of Willow Creek, about 100 meters south-west of the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  JEPS122268  Poa annua Lowell Ahart 2014-4-9 19324 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  CAS-BOT-BC255683  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville 2133 Comment
  RSA718083  Poa bolanderi L. Ahart 2006-7-16 12972 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SEINET10657849  Poa bulbosa Lowell Ahart 1987-5-6 Ahart 5561 Butte On dry bare disturbed soil along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. Comment
  SEINET10934988  Poa bulbosa Mary Susan Taylor 1982-5-2 Taylor 4386 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  SEINET10921189  Poa compressa Lowell Ahart 1988-6-29 Ahart 6090 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone, Butte County, California. Common. Yellow Pine Forest. 622 Comment
  RSA21174  Poa secunda C. B. Wolf 1937-5-14 8666 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  SEINET7852326  Poa secunda subsp. juncifolia J. Nachlinger 1984-4-8 911 Butte Table Mouintain, 4 miles north of Oroville 366 Comment
  CHSC29742  Poa secunda subsp. secunda J. D. Jokerst 1980-4-21 632 Butte Top of North Table Mt., several miles N of Cherokee Rd. 457 Comment
  UCD91854  Poa secunda subsp. secunda Robert E. Preston 1982-3-25 203 Butte Ca. 1/4 mile E of Pulga. 487 Comment
  JEPS120577  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. Comment
  JEPS117265  Pogogyne zizyphoroides Lowell Ahart 2010-5-14 16646 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west 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
  UC726650  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte on US Highway 99E, near the Cana Road. Hartweg got it in this neighborhood, in Valle Sacramento. Comment
  RSA0022168  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte On U. S. Highway 99E, near the Cana road. Comment
  CHSC26716  Polanisia dodecandra subsp. trachysperma M. P. Hayes 1977-10-23 140 Butte Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  HSC72951  Polanisia dodecandra subsp. trachysperma M. S. Taylor 1980-8-15 3255 Butte S side of Neal Rd., 0.1 mi. E of its junction with Hwy. 99, 7 mi. S of Chico 61 Comment
  SEINET10866374  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 Ahart 5041 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  SEINET10903191  Polygala cornuta Mary Susan Taylor 1978-7-18 Taylor 1692 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  SEINET10936260  Polygala cornuta Mary Susan Taylor 1981-6-7 Taylor 3859 Butte T22N R5E sw/sw sec 14, Pulga quad. Dry sites along old mining road on N side of Bear Ranch Creek, across from Feather River Hwy 70 from Arch Rock Tunnel Area, ca. 20 air mi NE of Oroville; on granite; 1700 ft elev. 518 Comment
  UCD38752  Polygonum Beecher Crampton 1957-9-17 4624 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  SEINET4335262  Polygonum R. McKee 1918-9-24 s.n. Butte Chico, Bidwell grounds Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC38613  Polygonum aviculare Vernon Oswald 1983-6-27 772 Butte Upper Bidwell Park, Chico, at the Horse Arena. Growing in disturbed soil in the parking lot. 79 Comment
  CHSC9535  Polygonum aviculare M MacArthur 1968-6-17 300 Butte SW yard of Building D along So-will-lon-no Street on the Chico State College campus. 60 Comment
  JEPS121981  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  SEINET10871692  Polygonum aviculare Mary Susan Taylor 1978-7-21 Taylor 1793 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  UC1192352  Polygonum aviculare subsp. aviculare Herbert L. Mason, Verne Grant 1946-9-3 13098 Butte 3 mi W of Colusa Comment
  UCD100080  Polygonum aviculare subsp. depressum John Thomas Howell 1962-6-16 37564 Butte Magalia. 731 Comment
  CAS-BOT-BC109136  Polygonum bidwelliae Lowell Ahart 1979-5-29 s.n. Butte 2.5 mile southeast of Paradise. Near Kunkle Creek. 500 Comment
  JEPS29840  Polygonum bidwelliae Rimo Bacigalupi and L. R. Heckard 1962-6-1 8584 Butte just off Centerville Rd about 1 mi e junction with Paradise Road 67 Comment
  CHSC29705  Polygonum californicum J. D. Jokerst 1980-5-28 896 Butte Top of North Table Mt., S of Cherokee Rd. 403 Comment
  CHSC105514  Polygonum douglasii subsp. douglasii Lowell Ahart 2010-9-28 17250 Butte On damp soil, about 10 yards west of Big Kimshew Creek, under trees, 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 Philbrood Reservoir. 1886 Comment
  NY323773  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  UC1509659  Polygonum hydropiper L. Ahart 1982-10-11 3864 Butte large duckpond ca 1/10 mi w Graylodge Wildlife Refuge (ca 12 mi sw of Gridley) 35 Comment
  JEPS108947  Polygonum lapathifolium Lowell Ahart 2006-9-11 13289 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
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC61004  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  POM220087  Polygonum phytolaccifolium H. F. Copeland 1928-8-29 440 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  SEINET10530409  Polypodium californicum Mary Susan Taylor 1980-5-27 Taylor 2651 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC20903  Polypodium calirhiza M. S. Taylor 1974-2-26 54 Butte S bank of Big Chico Creek, opposite Chico Municipal Golf Course. 60 Comment
  CHSC31851  Polypodium calirhiza L. Ahart 1974-3-8 311 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33346  Polypodium calirhiza Steve Alvarez 1980-3-24 13 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway. 270 Comment
  SEINET10899871  Polypodium glycyrrhiza Mary Susan Taylor 1983-1-17 Taylor 5215 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC71217  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1609044  Polypogon australis Lowell Ahart 1993-7-23 7098 Butte about 6 (air) mi ne Feather Falls (about 100 yards w of the bridge across the Fall River, w side of river); Fall River, ne of Feather Falls 1036 Comment
  UC184159  Polypogon australis A. A. Heller 1913-6-4 10775 Butte Table Mountain Olive Ranch n Oroville; Table Mountain Olive Ranch Comment
  UCD90971  Polypogon australis A. A. Heller 1913-6-4 10775 Butte Table Mountain Olive Ranch north of Oroville. Comment
  RSA715468  Polypogon interruptus L. Ahart 2005-5-2 11779 Butte East side of the Sacramento River, northwest of Parrott landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 26 Comment
  UCD51664  Polypogon interruptus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  CAS-BOT-BC232571  Polypogon monspeliensis Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CDA2346  Polypogon monspeliensis L. Ahart 2002-5-7 9635 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC45743  Polypogon monspeliensis S. A. Conley 1986-6-16 40 Butte 2.1 mi. e of Oroville on hwy 162. Along rd. Comment
  JEPS88274  Polypogon monspeliensis Vernon H. Oswald and Lowell Ahart 1996-5-27 7663 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & the Sacramento R. Scaramento R. Nat'l Wildlife Refuge (on s. side of levee rd. at s.w. corner of Tract 3.4, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  CAS-BOT-BC76710  Polystichum lemmonii V. Oswald; L. Ahart 1988-7-29 3655 Butte Ca. 5 mi. (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC28001  Polystichum munitum M. S. Taylor 1978-7-21 1799 Butte On se corner of Lake Madrone, at jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  CHSC34244  Polystichum munitum M. S. Taylor 1981-5-29 3810 Butte Vicinity of old mining claim cabin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC31767  Populus fremontii L. Ahart 1978-3-21 1617 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC52370  Populus fremontii Pauleen Broyes 1987-5-21 1053 Butte In and along Pine Creek. Comment
  JEPS8932  Porterella carnosula E. B. Copeland 1929-7-29 Butte near Butte Creek House; near Butte Creek House 1750 Comment
  SEINET10840498  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte On drying border of pond, above Jonesville 1750 Comment
  UCD100118  Portulaca oleracea Malcolm A. Nobs; S. Galen Smith 1949-6-29 1087 Butte Butte Creek, on road from Biggs to Princeton. Comment
  HSC104008  Potamogeton foliosus var. foliosus L. Ahart 2013-7-6 18823 Butte About 12 air mi. SE of Oroville; Peter Ahart Ranch, ~1.75 mi. N and 1.5 mi. E of Honcut 38 Comment
  CHSC65476  Potamogeton pusillus var. tenuissimus Vernon Oswald 1989-6-8 3800 Butte W side of Hwy 99 in ditch just n of Comanche Creek in s Chico. 64 Comment
  CAS-BOT-BC143108  Potentilla breweri V. Oswald; L. Ahart 1888-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CHSC50421  Potentilla glandulosa subsp. reflexa Vernon Oswald; Lowell Ahart 1990-6-27 4332 Butte Rd 23N31 northwest of Four Trees Rd, between Four Trees and Coyote Gap. 1463 Comment
  CAS-BOT-BC539446  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC113324  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  CAS-BOT-BC64614  Primula suffrutescens R. A. Schlising; R. Preston; R. Banchero; D. Burk 1981-7-21 s.n. Butte SE. of Jonesville in ne. part of county, on ridgetop of Snow Mountain. 2103 Comment
  CHSC82331  Prunus S. Posner 1972-9-23 Butte Garden behind 725 Nord Ave., Chico. Comment
  CAS-BOT-BC159920  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  CAS-BOT-BC159925  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville Comment
  CHSC92535  Prunus emarginata L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National Forest; on Sawmill Peak, 560 m east-southeast of the Lookout Tower; 2.4 km east of Magalia. Edge of old roadway. 966 Comment
  SD2306  Prunus emarginata E. B. Copeland 1931-7-28 Butte On ridge west of North Willow Creek, in chaparral. Jonesville 1650 Comment
  CHSC44347  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap. 609 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CHSC82272  Pseudobahia heermannii R. A. Schlising 1980-3-24 3526 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CHSC113356  Pseudognaphalium luteoalbum Lowell Ahart 2014-4-25 19395 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC65682  Pseudognaphalium luteoalbum Vernon H. Oswald 1996-3-22 7256 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
  CAS-BOT-BC357586  Pseudognaphalium stramineum A. A. Heller 1918-9-3 13087 Butte 8 miles north of Oroville Comment
  UCD80116  Psilocarphus oregonus CNPS SN Foothill Team 2005-4-13 SNFN 0080 d Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock, near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  CAS-BOT-BC361824  Psilocarphus oregonus Lowell Ahart 1970-5-12 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 150 Comment
  JEPS87528  Psilocarphus tenellus Lowell Ahart 1993-7-6 7049 Butte about 1/4 mi w Lost Creek Reservoir (s side of dirt rd) 1036 Comment
  POM219438  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC94101  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  JEPS119898  Pyrus communis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC45812  Quercus H. F. Copeland 1920-8-26 178 Butte near Jonesville 1219 Comment
  CDA13880  Quercus chrysolepis var. chrysolepis G. F. Hrusa, T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada; Near summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. and Comment
  HSC23322  Quercus douglasii D. G. Schmale 1971-5-25 32 Butte Off Skyway Rd. 8 mi W of Paradise 396 Comment
  CAS-BOT-BC86119  Quercus dumosa P. C. Everett; E. K. Balls 1959-10-20 23907 Butte 8.6 miles NE from Chico along State Hwy. 32, toward De Sabla 487 Comment
  CAS-BOT-BC62784  Quercus garryana var. breweri Duncan Dunning 1921-8-10 37288 Butte Lassen National Forest, at Honey Run, Paradise Va road Comment
  CHSC36364  Quercus garryana var. breweri J. D. Jokerst 1982-7-11 1612 Butte Along edges of Hwy 32. 3/10 miles S. of Forest Ranch. Comment
  CAS-BOT-BC105144  Quercus kelloggii G. P. Rixford 1912-10-1 s.n. Butte Bidwell Ranch, Chico Comment
  CHSC100493  Quercus lobata Lowell Ahart; John Dittes 2008-11-14 15450 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC100469  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15453 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  CAS-BOT-BC104691  Quercus wislizeni John Thomas Howell; H. Keith Wagnon 1980-5-28 53712 Butte Honcut Creek on road from Oroville to Marysville 30 Comment
  UC1135834  Quercus wislizeni C. G. Albertus 1933-6-26 33 Butte 0.5 mi s Nelson's Bar; Chico Quad. 365 Comment
  UC1135901  Quercus wislizeni J. E. Sowder 1933-7-1 101 Butte Promontory Peak, SW slope 1005 Comment
  JEPS110548  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC48694  Ranunculus alismifolius var. alismellus Vernon Oswald 1984-6-11 1281 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. Edge of meadow. 1414 Comment
  CHSC48695  Ranunculus aquatilis var. aquatilis Vernon Oswald; Lowell Ahart 1987-7-1 3072 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. In the largest lake. 1935 Comment
  CHSC44961  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 338 Butte Near Butte Meadows, on Bull Hill Rd., 0.2 mi from its jct with Humboldt Rd.; in stream. 1325 Comment
  CHSC117430  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-30 20885 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC37497  Ranunculus bonariensis var. trisepalus J. D. Jokerst; R. A. Schlising 1983-4-9 1711 Butte In the large vernal pool that is ca. 1/4 mile east of the south fork of Coal Cr. Canyon. Top of Table Mountain. 396 Comment
  CHSC3513  Ranunculus canus M. Gregg 1966-2-28 24 Butte In Upper Bidwell park--East of Salmon Hole. Across road. Comment
  CHSC76958  Ranunculus canus Margie Collins 1894-5-1 Butte Chico. Comment
  UC204953  Ranunculus hebecarpus A. A. Heller 1914-3-26 11232 Butte Canyon of Big Chico Creek 76 Comment
  UCD96215  Ranunculus hystriculus T. M. S. Taylor; Devine, M. Merryman 1981-2-11 3382 Butte 50 feet east of Lumpkin Road, on the north slope abvoe Macabes Creek, 2 miles N of junction of Lumpkin Road and Oroville-Quincy Highway (162), 13 miles NE of oroville. 457 Comment
  CHSC85422  Ranunculus muricatus John Dittes 1992-5-5 474 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  JEPS84920  Ranunculus muricatus Barbara Ertter with Lowell Ahart 1986-4-13 5888 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  UCD80703  Ranunculus muricatus CNPS SN Foothill Team 2005-3-23 SNFN 0064 Butte CDPR, Oroville State Recreation Area, along the North Fork Trail, on the Potter's Point Loop Trail, north of the intersection with Potter's Ravine Trail. 372 Comment
  CHSC52693  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 316 Butte S of Butte Creek House ca. 32 air miles ne of Chico; in meadow. 1828 Comment
  UC478517  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville 1500 Comment
  CHSC46851  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  SEINET13946281 Image available Rhamnus californica A. A. Heller 1915-1 11869 Butte Chico-Centerville road 3 miles from Chico Comment
  CAS-BOT-BC59880  Rhamnus ilicifolia Paul Leskinen 1972-9-9 1420 Butte Highway 155 e. of Glenville. 914 Comment
  CDA13885  Rhamnus ilicifolia G. F. Hrusa, T. D. Wilfred 1997-5-8 13743 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UC1121919  Rhamnus rubra C. G. Albertus 1933-7-1 37 Butte sw slope Promontory Point; Chico Quad. 1005 Comment
  RSA739861  Rhamnus tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills, upper Bidwell Park, Chico, NNW facing upper slope below N Rim Trail overlooking Sycamore Creek. 338 Comment
  CHSC20002  Rhamnus tomentella subsp. tomentella M. S. Taylor 1975-1-16 373 Butte Ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC27843  Rhamnus tomentella subsp. tomentella T. B. Devine 1978-10-17 468 Butte At Covered Bridge at intersection of Humbug Rd. and Honey Run Rd. Comment
  CHSC93882  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  CAS-BOT-BC56641  Rhododendron occidentale L. P. Janeway 1995-6-28 4821 Butte Top of Watson Ridge at junction of Roads 21N24 and 21N25; about 1.5 mi west of Kenebeck Ridge 1249 Comment
  CDA13888  Rhododendron occidentale G. F. Hrusa, T. D. Wilfred 1997-5-8 13745 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC65548  Rhododendron occidentale L. P. Janeway 1995-6-28 4821 Butte Top of Watson Ridge at junction of Roads 21N25; about 1.5 mi west of Kenebeck Ridge. 1249 Comment
  SD111937  Rhododendron occidentale Barbara Ertter, Peter Strachan, and Lowell Ahart 1980-5-8 3319 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.5 miles northeast of Huncut between Marysville and Oroville. 49 Comment
  SEINET10449291  Rhododendron occidentale Mary Susan Taylor 1980-5-27 Taylor 2735 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  CAS-BOT-BC199744  Rhododendron occidentale var. californicum A. A. Heller 1913-6-7 10800 Butte Near Stirling 1074 Comment
  CAS-BOT-BC168023  Rhus aromatica Lowell Ahart 1989-5-28 6293 Butte In openings south of Oregon Gulch Road, about 1/2 mile north of the [Cementery] Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CAS-BOT-BC170519  Rhus aromatica A. A. Heller 1914-3-19 11212 Butte Canyon of Big Chico Creek Comment
  CAS-BOT-BC200684  Rhus aromatica Lewis S. Rose 1945-5-12 45026 Butte Richardson Springs 304 Comment
  UC1609009  Rhus trilobata Lowell Ahart 1993-8-4 6929 Butte 2.5 mi s Oroville Airport (e side of gravel road, e of Feather River); Oroville Wildlife Area 30 Comment
  CHSC45136  Rhynchospora capitellata Vernon Oswald; Lowell Ahart 1987-7-19 3135 Butte Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank. 1706 Comment
  UCD102108  Ribes amarum Marian Vincent 1965-4-14 613 Butte Skyway 1.5 miles north of Magalia. Comment
  CAS-BOT-BC93277  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow. 1800 Comment
  SEINET10904148  Ribes nevadaense Mary Susan Taylor 1975-4-29 Taylor 548 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
  CAS-BOT-BC212667  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte Banks of the Feather River, near Stirling Comment
  SBBG17303  Ribes roezlii M. Vincent 1962-4-15 183 Butte 1 mi S of Stirling City on the Skyway Comment
  SD2135  Ribes roezlii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  SEINET10482950  Ribes roezlii Mary Susan Taylor 1977-7-15 Taylor 1414 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  CAS-BOT-BC198960  Ribes roezlii var. roezlii Jim Riley 1923-3-23 s.n. Butte Forest above De Sabla Comment
  CAS-BOT-BC198965  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC33908  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 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
  CHSC42389  Rigiopappus leptocladus Lowell Ahart 1979-5-29 1905 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
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CHSC27203  Robinia pseudoacacia P. Moyer 1972-4-9 163 Butte CSUC Campus. S bank Chico Ck. at L.S. Bridge. 60 Comment
  CHSC31812  Robinia pseudoacacia L. Ahart 1975-5-3 748 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC99658  Robinia pseudoacacia H. Koeth; K. Schierenbeck 2007-2-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  CAS-BOT-BC74473  Rorippa curvisiliqua F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  UC1563271  Rorippa curvisiliqua Lowell Ahart 1990-10-21 6641 Butte about 1/2 mi w Gold Flat (below the high water line of Lake Oroville, about 1 mi n Nelson Bar Road); w of Gold Flat, Lake Oroville 213 Comment
  CHSC80517  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2001-4-27 8732 Butte On the south side of a road levee, just north of the bridge across Wyandotte Creek, north of Lower Honcut road, about 100 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  UCD22656  Rorippa nasturtium-aquaticum Elizabeth I. Schwartz 1990-5-12 9 Butte North side of Northfork Feather River. 670 Comment
  CHSC50112  Rosa canina Vernon Oswald 1990-5-8 4191 Butte Junction of Aquas Frias Rd and Afton Rd, west of Biggs. In an area of rice fields. 21 Comment
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Jun 19 2009
  RSA718379  Rosa gymnocarpa L. Ahart 2006-6-24 12856 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  CHSC43126  Rosa pisocarpa subsp. ahartii L. P. Janeway 1987-6-20 2276 Butte Along road to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. 1013 Comment
  UC914778  Rosa pisocarpa subsp. ahartii A. A. Heller 1938-7-20 15283 Butte alongside stream Snag Lake (upper end of lake, e of Chaparral) 1524 Comment
  CHSC45803  Rubus armeniacus L. P. Janeway 1987-6-13 2198 Butte Flea Valley; 0.2 mi W on the Flea Valley Rd from the Concow Rd. At edge of rd. 1127 Comment
  CHSC37063  Rubus discolor L. Ahart 1982-9-29 3835 Butte Along edge of rd and near Pinkard Creek, ca. 1/10 mi n of Lost Creek Reservoir Dam, ca. 2.1 mi nw of Strawberry Valley. 1100 Comment
  CHSC86141  Rubus glaucifolius John Dittes; Josephine Guardino 2002-6-21 620 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  SEINET10483569  Rubus glaucifolius Mary Susan Taylor 1981-5-5 Taylor 3610 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CHSC73432  Rubus leucodermis H. Durio 1995-8-1 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  UC1128632  Rubus parviflorus P. L. Johannsen 1936-7-28 969 Butte 2 1/4 mi n junction of Butte and Secret Creeks (Plot 11); Paynes Creek Quad. Comment
  UC426912  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  RSA4645  Rubus parviflorus var. bifarius E. B. Copeland 1930-7-16 s.n. Butte Jonesville. 1600 Comment
  CHSC34216  Rubus ursinus M. S. Taylor 1981-4-28 3570 Butte Along Chino Creek, at its jct with 23N28.2, ca. 4 air mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  CHSC100910  Rumex acetosella R. A. Schlising; Pauleen Broyles 1988-8-9 4687 Butte Head of Concow Creek (Concow Meadows), south of Flea Valley. 1097 Comment
  JEPS120829  Rumex acetosella Lowell Ahart 2013-7-9 18835 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  JEPS124034  Rumex acetosella Lowell Ahart 2015-7-4 20293 Butte About one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 miles (air) northeast of Feather Falls. Comment
  UC1562377  Rumex acetosella Lowell Ahart 1990-5-25 6497 Butte 1.25 mi nw Enterprise Bridge (across Lake Oroville) (0.25 mi w of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 274 Comment
  CHSC103944  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC23688  Sagittaria latifolia K. Stern 1970-6-1 Butte Growing in ditch in Rancho Llano Seco. Comment
  CHSC52143  Sagittaria longiloba L. P. Janeway 1988-6-12 2758 Butte Corner of rice field near jct of hwy 162 and Midway; 2 mi S of Richvale. 28 Comment
  CAS-BOT-BC129949  Salix bonplandiana Ira L. Wiggins 1925-3-22 1477 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC111971  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the north side of the creek, on the bottom of Beatson 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. 280 Comment
  CHSC38667  Salix exigua var. hindsiana Vernon Oswald 1983-5-25 551 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd at Diversion Dam. 134 Comment
  JEPS119882  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the bottom of Beatson Hollow, about 1mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC1192302  Salix gooddingii Herbert L. Mason and Verne Grant 1946-8-8 12996 Butte Sanford Slough on Tule Gun Club; Butte Sink Comment
  CAS-BOT-BC104075  Salix hindsiana Lowell Ahart 1987-4-30 5491 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
  CHSC32613  Salix laevigata J. D. Jokerst 1979-3-20 1232 Butte Top of North Table Mt., the second drainage N of Cherokee Rd., at the E edge of the mountain center. 396 Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  UC1609154  Salix lasiandra subsp. lasiandra Vernon H. Oswald and Lowell Ahart 1993-6-22 5561 Butte gravel pit in Long Ravine w. of Stirling City (where Hendricks Canal tunnel dumps into creek) 975 Comment
  CAS-BOT-BC125174  Salix lasiandra var. lasiandra A. A. Heller 1919-5-17 13160 Butte Banks of the Feather River near Stirling Comment
  JEPS119598  Salix lasiolepis Lowell Ahart 2012-4-9 17827 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UC478537  Salix ligulifolia E. B. Copeland 1931-6-9 305 Butte in meadow near head of N. Willow Creek Jonesville 1550 Comment
  CHSC90635  Salix lucida subsp. lasiandra Lowell Ahart 2005-4-2 11695 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  POM107305  Salix prolixa C. C. Bruce 1898-05 2481 Butte Butte Creek. Comment
  POM219007  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  CAS-BOT-BC221113  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte Forest Ranch 822 Comment
  SEINET10869907  Salvia sonomensis Mary Susan Taylor 1975-4-25 Taylor 493 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC11857  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville. 472 Comment
  CHSC27253  Sambucus mexicana P. Moyer 1972-5-7 195 Butte N bank Chico Ck. By L.S. Bridge. CSUC campus. 60 Comment
  CHSC27338  Sambucus mexicana T. B. Devine 1977-11-6 464 Butte On River Road, 0.25 mi SE of jct with Big Chico Creek. 38 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
  CHSC31560  Sambucus mexicana L. Ahart 1974-5-14 452 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10465318  Sambucus mexicana Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4254 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CAS-BOT-BC238620  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 s.n. Butte Jonesville 1550 Comment
  CHSC43264  Samolus parviflorus Lowell Ahart 1987-9-4 5884 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC32761  Sanicula bipinnata J. D. Jokerst 1981-4-10 1292 Butte Top of North Table Mt, W edge, N of and adjacent to Beatson Hollow. 335 Comment
  CHSC38747  Sanicula bipinnata Vernon Oswald 1983-2-23 99 Butte Upper Bidwell Park, Chico, on the north slope ca 1600 ft n of Upper Park Rd. and 300 ft w of the power lines. 152 Comment
  CHSC50312  Sanicula graveolens Vernon Oswald; Lowell Ahart 1990-5-29 4260 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1325 Comment
  CHSC36539  Sanicula tracyi L. Ahart 1982-6-4 3548 Butte On a lava cap, 1.5 mi e of Camp 18 and ca 8 mi e of Feather Falls. 1000 Comment
  CHSC118584  Sanicula tuberosa L. P. Janeway; Emily doe, Cynthia Baricevic 2017-4-27 12193 Butte Northern High Sierra Nevada. Plumas National Forest; top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC45883  Sanicula tuberosa Lowell Ahart 1982-5-8 3412 Butte On the north slope above the road, about 1/2 mile south-west of the Forbestown Reservoir, about 4 1/2 miles north-east of Forbestown. 731 Comment
  JEPS117134  Sanicula tuberosa Lowell Ahart 2010-5-7 16621 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  SEINET3450850  Sanicula tuberosa Unknown 2003-4-15 10101 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, steep slopes of Beatson Hollow 280 Comment
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May 5 2015
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC1986  Scandix pecten-veneris V. Holt 1935-4-7 Butte Covered bridge, Butte Creek. 108 Comment
  UCD128062  Scandix pecten-veneris B. Castro 1982-4-8 10 Butte south side of Hwy 70, ca. 5 miles from junction of Hwys 70 and 149, ca. 9 miles northeast of Oroville. 146 Comment
  RSA88186  Schedonorus pratensis J. T. Howell 1951-6-26 27520 Butte Big Bend Mt. 610 Comment
  CHSC3358  Schinus dependens Robert L. Smith 1966-3-4 39 Butte U.S. Plant Introduction Station 5 miles SE of Chico. Comment
  CAS-BOT-BC111661  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 miles west of Biggs. Comment
  UCD49967  Schoenoplectus mucronatus Bellue 1947-7-23 s.n. Butte NW Foster Bx730 Princeton, 1 mi. S- 1 m; W. Butte City 4 Corners. Comment
  CHSC76308  Schoenoplectus tabernaemontani Lowell Ahart 1999-9-21 8278 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
  SEINET10467323  Scirpus carinatus Mary Susan Taylor 1981-5-6 Taylor 3622 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CAS-BOT-BC123993  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  CHSC56806  Scirpus diffusus L. P. Janeway 1988-7-29 3130 Butte Meadow near Humbug Summit Road, 1.5 mi northeast of the Snag Lake dam. 1767 Comment
  CHSC56810  Scirpus diffusus L. P. Janeway 1987-6-13 2216 Butte Meadow just northeast of the junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CAS-BOT-BC110844  Scirpus microcarpus Herbert Faulkner Copeland 1920-8-1 167 Butte Tonesville meadow 1219 Comment
  SEINET11268263  Scirpus setaceus Lowell Ahart 2000-7-11 8563 Butte About 200 yards southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 6 1/2 miles (air) northeast of Feather Falls.; 0 1280 Comment
  CHSC90633  Scleranthus annuus subsp. annuus Lowell Ahart 2005-4-2 11687 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC56758  Scutellaria californica L. P. Janeway 1991-6-1 3984 Butte West-facing cut-bank of Dark Canyon Road 2.7 mi south of Big Bend Road/ Parkhill. 350 Comment
  CHSC65571  Scutellaria siphocampyloides R. Banchero 1980-5-31 166 Butte Ca 2.3 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 3.9 mi SW of Cohasset. Ca 0.1 mi NW of road. 182 Comment
  JEPS120940  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 air miles SW of Forbestown. Comment
  SFV5836  Scutellaria siphocampyloides M. L. Vincent 1968-6-5 768 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of 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
  CAS-BOT-BC63854  Sedum spathulifolium Junea Kelley 1970-4-24 s.n. Butte Los Vergils Comment
  CAS-BOT-BC62119  Selaginella hansenii John Thomas Howell 1962-6-16 37617 Butte Nelson Bar 213 Comment
  SEINET10470982  Selaginella hansenii Collins, 1978-4-21 Collins 14 Butte 6 miles n of Oroville, 1 mile w of Cherokee Rd. 1000 feet. 305 Comment
  UCD135989  Selaginella wallacei L. Ahart 1973-12-28 293 Butte Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut, about 12 miles south of Oroville, along North Honcut Creek. 45 Comment
  SEINET10474903  Senecio aronicoides Mary Susan Taylor 1978-7-19 Taylor 1781 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
  CDA13874  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-5-7 13732 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC103954  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico. 182 Comment
  CHSC116987  Senecio sylvaticus Lowell Ahart 2016-6-4 20939 Butte On the east side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  UC492745  Senecio triangularis H. F. Copeland 1928-8-17 Butte Jonesville Comment
  CHSC19942  Senecio vulgaris M. S. Taylor 1975-3-26 428 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC5982  Sequoia sempervirens M. MacArthur 1968-6-12 153 Butte Chico State College campus. SW side of Life Science bld. 60 Comment
  JEPS110304  Setaria viridis Lowell Ahart 2006-9-11 13309 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
  CHSC101264  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC105800  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 yards west of Big Kimshew Creek, meadow, 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
  SEINET10483281  Sibbaldia procumbens Mary Susan Taylor 1979-7-21 Taylor 2161 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC13724  Sidalcea calycosa J. G. Moore 1969-4-13 141 Butte Stilson Canyon Rd., 1.4 mi. se of jct. with Bruce Rd., Chico. Comment
  CHSC13725  Sidalcea calycosa J. G. Moore 1970-5-25 151 Butte Growing on a small stream. Paradise Golf Course, Paradise. Comment
  CHSC61159  Sidalcea hartwegii Vernon H. Oswald 1993-5-18 5397 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  RSA32843  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Clear Creek, Paradise Grade Comment
  NY43505  Sidalcea oregana S. Bianco 1995-10-19 1044 Butte E side of Concow Rd, ca. 0.8km S of Hoffman Rd, on S side of creek 760 Comment
  CHSC44634  Sidalcea oregana subsp. spicata Lowell Ahart 1988-6-21 6049 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jargo Gap. 271 Comment
  CHSC27703  Sidalcea robusta Robert A. Schlising 1978-5-29 3282 Butte Bidwell Park, Chico; on slopes north and east of golf course and old rifle range, near end of paved road. Comment
  UC138306  Sidalcea robusta Mrs. R. M. Austin Apr 1896 822 Butte Little Chico Canyon Comment
  JEPS98430  Silene antirrhina Lowell Ahart 2000-5-31 8425 Butte 3 mi SE of Paradise (below the high water line of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 271 Comment
  CAS-BOT-BC384469  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Along Ponderosa Way 500 Comment
  CHSC37434  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte E. of Inskip and near Jones Meadow. 1734 Comment
  UC1586524  Silene bernardina Lowell Ahart 1991-9-19 6729 Butte about 2 mi ne Coyote Gap (about 2 mi nw of Four Trees, near where the two branches of Wildcat Creek come together); Wildcat Creek, nw of Four Trees, ne of Coyote Gap 1219 Comment
  RSA3433  Silene californica Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET5337144  Silene californica R. T. Short 1959-4-11 13 Butte 15 miles east of Oroville on US 40. 549 Comment
  CAS-BOT-BC385887  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  SD1631  Silene douglasii var. monantha E. B. Copeland 1931-6-19 Butte Jonesville, near the Summit. 2100 Comment
  CHSC31133  Silene laciniata subsp. californica Herb Allan McLane 1980-4-9 4 Butte 10 ft n of Ponderosa Way, Plumas National Forest. 402 Comment
  POM196103  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville. 1550 Comment
  RSA715709  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CAS-BOT-BC5816  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville 1550 Comment
  UC852931  Silene occidentalis subsp. longistipitata A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  CHSC19525  Silybum marianum J. H. Sneed 1972-3-5 8 Butte Found along side Chico-Butte City Hwy. s of Chico. 3.5 mi on right side of road. 59 Comment
  CHSC48345  Sisymbrium irio Vernon Oswald 1984-3-24 1103 Butte Chico Municipal Airport, ca. 200 ft e of the e end of Piper Ave. 82 Comment
  RSA21307  Sisyrinchium bellum Carl B. Wolf 1937-5-13 8652 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SD779  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville. Common in grassy meadows. 1500 Comment
  CHSC41364  Sisyrinchium elmeri R. A. Schlising 1980-6-26 3792 Butte 4.5 mi N of Stirling City along the Skyway. Comment
  SEINET10472650  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1979-7-21 Taylor 2152 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC97325  Smilax californica L. P. Janeway 2007-6-25 9070 Butte Northern High Sierra Nevada. Plumas National Forest; along north bank of French Creek between Bidwell Creek and Jack Creek. 604 Comment
  SEINET10469849  Smilax californica Mary Susan Taylor 1975-6-25 Taylor 805 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
  CHSC42429  Solanum parishii Lowell Ahart 1987-5-9 5599 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
  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
  CHSC76346  Solanum rostratum Paul Maslin 1999-7-7 Butte Campus of California State University, Chico; between the Continuing Education building and Big Chico Creek. In flower beds. 59 Comment
  RSA325175  Solanum umbelliferum M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-6 5413 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  SEINET260320  Solidago californica Lowell Ahart 1988-7-24 6130 Butte Ca 1/20 mi NE of the intersection of Ponderosa Way and Lower Forbestown Rd W of Sunset Hill 732 Comment
  SEINET10474350  Solidago californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4148 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  CHSC36965  Solidago elongata M. S. Taylor 1982-8-16 4988 Butte S end of Stirling City, along both sides of the Skyway. 1036 Comment
  CHSC41890  Solidago elongata Lowell Ahart 1986-8-15 5385 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CHSC65193  Soliva sessilis Lowell Ahart 1995-5-30 7575 Butte Along the edge of the dirt road, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CHSC38123  Sonchus asper R. L. Ondricek-Fallscheer 1983-5-8 170 Butte On se side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 188 Comment
  RSA755314  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of 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. 240 Comment
  CHSC38391  Sonchus oleraceus Vernon Oswald 1983-5-21 512 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  JEPS124111  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC48916  Sorbus scopulina Vernon Oswald 1985-8-4 1921 Butte Humboldt Rd. at Butte Creek Bridge s of Cherry Hill. On the bank of the creek. 1432 Comment
  CHSC100941  Sorbus scopulina var. cascadensis R. A. Schlising; J. D. Jokerst 1982-8-31 4380 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  SEINET10507640  Sorghum halepense Mary Susan Taylor 1979-9-28 Taylor 2203 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET8233923  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET10933086  Sparganium emersum var. multipedunculatum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4195 A 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
  SEINET10487734  Spartium junceum Melvin L. Conrad, Douglas G. LeDoux; Patricia L. Kenney 1973-6-5 Conrad 7035 Butte Roadside in paradise. Corolla lemon yellow. Spanish broom. 792 Comment
  CDA20087  Spartium junceum R. Harrie 2003-1-13 PDR 1280328 Butte Northern California; Old mine site. 0 Comment
  JEPS120961  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, 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
  CHSC34818  Spergularia rubra M. S. Taylor 1981-5-27 3804 A Butte In path, nw end of Paradise Lake near old barn, ca. 3 air mi n of Magalia. 792 Comment
  JEPS105909  Spiraea douglasii Lowell Ahart 2004-8-2 11331 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
  RSA700390  Spiranthes romanzoffiana Lowell A. Ahart 2004-8-2 11325 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CHSC103172  Spirodela punctata Lowell Ahart 2009-11-19 16557 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  UC1609424  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
  CHSC42350  Stachys ajugoides var. rigida Lowell Ahart 1987-5-27 5691 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC42980  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2315 Butte SW end of Logue Meadows. 1325 Comment
  CHSC43643  Stachys ajugoides var. rigida B. Castro 1987-7-19 152 Butte In Coon Hollow, 1.65 mi e of W. Branch Feather R. crossing of Coon Hollow Rd. Ca 100' along Coon Hollow Rd. at edge of large meadow. 1767 Comment
  CDA30221  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte Drainage on east 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
  CHSC38483  Stachys pycnantha Vernon Oswald 1983-8-9 974 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 500 ft upstream from Five Mile Recreation Area. 85 Comment
  CHSC806  Stachys pycnantha E. Walker 1932-7-26 Butte Magalia Heights. 731 Comment
  UC1563286  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mi northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  SEINET12326786  Stachys pycnantha Unknown 1983-1 4428 Butte ca 0.12 mi NE of Kunkle Reservoir, S of Paradise 600 Comment
  CHSC61637  Stellaria borealis subsp. sitchana Lowell Ahart 1993-9-13 7230 Butte On the bottom and edges of washes along Bolt Creek, along the edges of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC99553  Stellaria borealis subsp. sitchana L. P. Janeway; D. Toren, C. Christofferson,H. Koeth, D. Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada. Plumas National Forest; along Coon Creek about 100 m northeast of Rogers Cow Camp Campground, about 500 m west of Oroville-Quincy Hwy. 1234 Comment
  CHSC58902  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CHSC61309  Stellaria crispa Lowell Ahart 1993-7-22 7089 Butte In the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET10537600  Stellaria crispa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4741 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC391085  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CHSC26854  Stellaria longipes var. longipes M. S. Taylor; M. Hayes 1978-6-24 1655 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its juct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC101093  Stellaria media Lowell Ahart; John Dittes 2009-3-20 15507 Butte Open area west of the Guardian Rock Trail, about 175 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
  CHSC3291  Stellaria media M. L. Hillier 1966-2-14 Butte On hillside n. of Bidwell Municipal Golf Course club house. Comment
  CHSC96550  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  JEPS113137  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  SEINET12558144 Image available Stellaria nitens Lowell Ahart 1983-1 3907 Butte about 1/2 mile southwest of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown, California 450 Comment
  CHSC42694  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3047 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. In a small meadow. 1780 Comment
  CHSC61300  Stephanomeria lactucina Lowell Ahart 1993-7-29 7131 Butte On the west side of the dirt road to the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1463 Comment
  CHSC69656  Stephanomeria paniculata Vernon Oswald; Lowell Ahart 1997-9-9 8858 Butte North of Magalia and 0.4 mi northeast of Coutolenc Rd. on Jordan Hill Rd. to Whiskey Flat. Roadside. 670 Comment
  CHSC84403  Stephanomeria paniculata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the east side of Encina Grande Road, just south of a small branch of Canyon Creek, about 1 mile west of Oroville Quincy Highway, about 2 1/2 miles (air) southwest of Berry Creek. 632 Comment
  UC1586423  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald and Lowell Ahart 1990-10-11 4463 Butte about 4 mi s Jarbo Gap (spur road off Dark Canyon Rd, leading to the opening between railroad tunnels No 7 & 8) 335 Comment
  SEINET10506970  Stipa Mary Susan Taylor 1980-4-18 Taylor 2506 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET10603816  Stipa cernua A. Arthur Heller 1902-5-8 Heller 5497 Butte Berry Canon ( Near Clear Creek). Comment
  SEINET10827380  Stipa lemmonii Robert A. Schlising 1978-4-23 Schlising 03229 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road; area of Cupressus macnabiana and Pinus sabiniana; with Festuca california and Elymus glaucus. Comment
  HSC103816  Streptanthus L. Ahart 2006-7-11 12939 Butte About 50 yds. S of Humboldt Road, ~1.5 air mi. SW of Butte Meadows 1436 Comment
  CAS-BOT-BC87426  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  CAS-BOT-BC87428  Streptanthus polygaloides John Thomas Howell 1955-6-14 30460 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC87437  Streptanthus polygaloides Lowell Ahart 1983-6-30 4178 Butte About 1.5 mile northeast of Concow Res. 550 Comment
  CDA11185  Streptanthus polygaloides G. F. Hrusa 1991-5-29 8437 Butte Sierra Nevada; At junction of Hwy 70 and Pulga Rd. in Feather River Cyn. 473 Comment
  UC1609059  Streptanthus tortuosus Lowell Ahart 1993-6-20 6990 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC725566  Streptanthus tortuosus var. suffrutescens A. A. Heller 1942-4-26 16434 Butte rocks overlooking deep gorge where road begins to descend toward Oroville (after leaving flattened summit of Table Mt.) Comment
  SEINET10940277  Styrax officinalis var. californicus Mary Susan Taylor 1976-5-3 Taylor 1105 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; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  SEINET5505734 Image available Styrax officinalis var. californicus Margaret J. Williams, Wayne Roderick 1984-1 84- 23 -2 Butte Feather River Canyon, Hwy. 70, 1.5 mi. west of Poe Power Dam 457 Comment
  CAS-BOT-BC48063  Styrax redivivus L. P. Janeway 1995-6-20 4806 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the rige, above Road 21N25A. 1143 Comment
  UC1119963  Symphoricarpos mollis P. L. Johannsen 1936-7-29 972 Butte 1 mi n junction of Butte Creek and Secret Creek; Paynes Creek Quad. 1280 Comment
  SEINET10938829  Symphoricarpos rivularis Mary Susan Taylor 1976-3-9 Taylor 1020 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CAS-BOT-BC97690  Symphyotrichum chilense H. E. Brown 1896-9-15 80 Butte near Clear Creek 53 Comment
  CHSC38323  Symphyotrichum chilense Vernon Oswald 1983-9-10 1037 Butte Upper Bidwell Park, Chico, about 200 ft. E of the parking lot at Day Camp. 91 Comment
  JEPS87141  Symphyotrichum spathulatum Lowell Ahart 1992-9-9 6920 Butte ca .5 mi se Kunkle Reservoir ((along a deep wash below the high water line of Lake Oroville)); Lake Oroville 243 Comment
  CHSC69671  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-16 3123 Butte West Branch of the Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CAS-BOT-BC98370  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1959-9-20 34647 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC38325  Symphyotrichum subulatum var. parviflorum Vernon H. Oswald 1983-9-24 1044 Butte Upper Bidwell Park, Chico, on the north edge of Upper Park Rd. at Diversion Dam. 128 Comment
  UC1609155  Taeniatherum caput-medusae Vernon H. Oswald and Lowell Ahart 1993-6-22 5559 Butte w of Stirling City (in Long Ravine, (where Hendricks Canal tunnel dumps into creek)); Long Ravine 975 Comment
  CHSC46812  Tanacetum parthenium R. A. Schlising; P. Broyles 1988-7-3 4567 Butte SE of Stirling City, past 'Five Corners' at small streamside and roadways in logging slash. Comment
  CDA42865  Taraxacum erythrospermum L. Ahart 2012-5-14 18044 Butte Along the edges of the paved road, between Tables 7 & 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC376889  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scotts John Rd, ca. .3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville 1828 Comment
  SEINET10471638  Taxus brevifolia Lowell Ahart 1987-5-22 Ahart 5682 Butte On damp white soil, near a small bog or meadow, near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles nort-east of Feather Falls. 1219 Comment
  CHSC42005  Thysanocarpus curvipes Lowell Ahart 1975-3-27 728 Butte Along Swedes Flat Road, about 1/8 mile east of the bridge across Rocky Honcut Creek, north-east of Bangor. 304 Comment
  UC857556  Thysanocarpus curvipes A. A. Heller 1915-5-25 11899 Butte Mt. Ida ranch 10 mi e Oroville; Sierra foothills 457 Comment
  CAS-BOT-BC88223  Thysanocarpus curvipes Lowell Ahart 1990-3-9 6415 Butte On the east side of Pacific Heights Road, about 3.5 miles southwest of Oroville. 33 Comment
  RSA0057584  Thysanocarpus curvipes Amos Arthur Heller 1938-4-17 15039 Butte Back of Salmon Hole on Chico Creek, east of Chico. Comment
  CHSC24965  Thysanocarpus curvipes var. curvipes J. Cox 1976-3-10 45 Butte N Table Mt. Ca 300 yds n of Cherokee Rd, 4.3 mi ne of Oroville. 426 Comment
  UC857581  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 mi n Oroville Comment
  HSC38050  Thysanocarpus radians Thomas W. Nelson, Jane P. Nelson 1976-5-9 2456 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC3010  Tilia platyphyllos Carl Pejsa 1958-4-19 114 Butte Bidwell Park Forestry Station. Comment