Search Results — 2000 specimen records retrieved (1603 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
  UC1192282  Abutilon theophrasti Herbert L. Mason and Verne Grant 1946-9-4 13105 Butte Colusa Gun Club Butte Sink Comment
  SEINET3449383  Acacia dealbata Unknown 2003-4-30 10118 Butte Palermo, Palermo, about 2 air miles northeast 60 Comment
  CAS-BOT-BC331603  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC331611  Acer macrophyllum Lowell Ahart 1982-5-8 3409 Butte Near the Forbestown Res. About 1 mile SW of the Forbestown Res., about 4 miles NE of Forbestown. 800 Comment
  CHSC103159  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 181 Comment
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  SEINET7893982  Acer macrophyllum R. T. Short 1961-4-11 s.n. Butte On US 40 alternate, 15 miles E of Oroville. (Hwy 70) 549 Comment
  UC2026885  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC249  Achillea millefolium M. Anthony 1954-5-30 Butte Rag Dump 5. 609 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
  CHSC11972  Achnatherum lettermanii E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CAS-BOT-BC218045  Achnatherum stillmanii Lowell Ahart 1980-6-22 2446 Butte 1 mile NE of Woodleaf 1000 Comment
  CAS-BOT-BC218046  Achnatherum stillmanii Lowell Ahart 1980-9-10 2626 Butte Little Bald Rock 1100 Comment
  CHSC34039  Achnatherum stillmanii L. Ahart 1981-7-7 2934 Butte Along the edge of the dirt road to the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 800 Comment
  CHSC49586  Achnatherum stillmanii Vernon Oswald 1985-6-30 1872 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC38316  Achyrachaena mollis Vernon Oswald 1983-4-20 354 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  SEINET5628265 Image available Acmispon americanus Heller 1913-1 2814 Butte Chico on Big Chico creek Comment
  CHSC113449  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. 1664 Comment
  CHSC31803  Acmispon americanus var. americanus L. Ahart 1977-9-8 1567 Butte Peter Ahart Ranch. Along North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  UCD103793  Acmispon americanus var. americanus L. E. Hazeltine 1916-7-21 s.n. Butte Chico. Comment
  CHSC876  Acmispon brachycarpus M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC113908  Acmispon parviflorus Lowell Ahart 2014-5-8 19450 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CHSC31099  Acmispon parviflorus Diane M. Reilly 1980-4-19 16 Butte Under power lines. Ca. 1/4 mi sw off Big Bend Rd., ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  CHSC31813  Acmispon parviflorus L. Ahart 1976-4-7 1034 Butte Near edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50040  Acmispon strigosus Lowell Ahart 1990-4-15 6455 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC86853  Acmispon strigosus L. P. Janeway; John Hunt, Adam Henderson 2003-5-13 7785 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek. 290 Comment
  CHSC58948  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CAS-BOT-BC391375  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CAS-BOT-BC391376  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  HSC66268  Aconogonon davisiae M. S. Taylor 1979-6-21 2156 Butte W side of Humboldt Peak, Humboldt Summit 2155 Comment
  CHSC100925  Aconogonon phytolaccifolium R. A. Schlising; Pauleen Broyles 1986-8-5 4497 Butte Close to Plumas County line, at beginning of Scotts John Creek. 1889 Comment
  CAS-BOT-BC418802  Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte At Chaparral 1524 Comment
  CAS-BOT-BC29923  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CAS-BOT-BC133127  Adenostoma fasciculatum Ella Dales Cantelow 1940-5-10 4293 Butte E. of Oroville, Old road to Bucks Lake Comment
  SEINET10483637  Adenostoma fasciculatum Mary Susan Taylor 1975-4-25 Taylor 494 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
  CHSC99560  Adiantum jordanii L. P. Janeway 2008-6-22 9421 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  SEINET11716733  Adiantum jordanii B. K. Madsen 1970-1 22 Butte S side of Chico Canyon Rd, ca 300 yards S of Municipal Golf Course bdg across Big Chico Creek, Chico Comment
  CHSC109864  Aegilops triuncialis L. P. Janeway 2012-6-7 10858 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  HSC103928  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Plumas National Forest; along Oroville-Quincy Hwy., 5.6 road km N of the bridge over Canyon Creek arm of Lake Oroville 357 Comment
  HSC93184  Aegilops triuncialis L. Ahart 1995-5-30 7581 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  CHSC81522  Aesculus californica Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. About 200 yards from Chico Creek. 91 Comment
  JEPS115572  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC138055  Aesculus californica Mrs. R. M. Austin May 1896 134 Butte Little Chico Creek Comment
  CHSC3136  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. 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
  RSA32872  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling. 1075 Comment
  UC1137063  Agrostis August L. Hormay 1929-8-10 Butte near Graham Mine; Philbrook Comment
  CHSC55462  Agrostis avenacea L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 38 Comment
  CHSC90993  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 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. 354 Comment
  CAS-BOT-BC127327  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC127330  Agrostis exarata H. F. Copeland 1920-8-12 122 Butte Jonesville Meadow. 1219 Comment
  UC1609047  Agrostis exarata Lowell Ahart 1993-7-23 7092 Butte about 6 air mi ne Feather Falls (on the w side of Fall River, about 100 yds w of the bridge across Fall River) 1036 Comment
  UCD52416  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  SEINET10790042  Agrostis exarata var. monolepis Lowell Ahart 1982-5-28 Ahart 3440 Butte On damp to dry soil along edge of a small wash under trees, eE of North Honcut Creek, near Peter Ahart Ranch, ca. 3 miles NE of Honcut. 50 Comment
  SEINET10507086  Agrostis exigua Lowell Ahart, L. Hanson 1985-5-20 Ahart 5028 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  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
  SEINET10507089  Agrostis gigantea Lowell Ahart 1985-11-7 Ahart 5235 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
  SEINET10661070  Agrostis hendersonii Lowell Ahart 2007-5-22 Ahart 13899 Butte T21N, R6E, southeast 1/4 Section 30. On Big Bald Rock, about 14 miles (air) northeast of Oroville. 956 Comment
  CHSC70857  Agrostis microphylla Lowell Ahart 1998-4-29 7952 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  CHSC107924  Agrostis pallens L. P. Janeway 2011-7-18 10516 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.3 km northeast of the trailhead, 1.1 air km south-southeast of Bald Rock Dome. Along top of northeast-trending ridge, often abundant along edges of the trail. 725 Comment
  UC573807  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadow Paynes Creek Quad. 1341 Comment
  CHSC42998  Agrostis stolonifera Lowell Ahart 1987-7-3 5773 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC113464  Agrostis thurberiana Lowell Ahart 2014-7-7 19586 Butte West edge of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC31933  Agrostis variabilis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1032 Butte Humboldt Peak, large, open, bowl-shaped, volcanic mudflow ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CHSC6029  Ailanthus altissima M. MacArthur 1968-6-18 227 Butte Ca. 10 ft. from Big Chico creek (SE) opposite LS bld., Chico State College campus. 60 Comment
  UCD18732  Aira caryophyllea Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 25 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CAS-BOT-BC138412  Aira caryophyllea var. capillaris Lowell Ahart 1980-4-13 2079 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC47600  Aira elegans Lowell Ahart 1975-4-15 203 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC46618  Alisma lanceolatum Vernon H. Oswald 1988-8-5 3618 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). 85 Comment
  CHSC84021  Alisma triviale Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC51934  Allium amplectens E. Ray Latham 1988-4-21 Butte 100 m E of the E end of Fremont St, Chico. 30 Comment
  SEINET257320  Allium amplectens J. L. Reveal 1988-6-3 7005 Butte Paradise 0.2 mi S of Bennett Rd along South Libby Rd onto N end of Morgan Ridge 518 Comment
  UC3060  Allium amplectens Mrs. Bruce May 1898 1898 Butte Little Chico Butte Comment
  CHSC28505  Allium campanulatum M. S. Taylor; J. Jokerst 1979-7-21 2153 Butte On Humboldt Peak, on Humboldt Summit. 2154 Comment
  SEINET176932  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  SEINET10472035  Allium campanulatum Mary Susan Taylor 1980-5-24 Taylor 2744 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET12046121  Allium howellii J. D. Mott 1978-1 19 Butte .5 mi E of Monk's store, Cohasset Stage Comment
  CHSC87776  Allium membranaceum Paul Maslin 2004-4-30 29 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610592E 4410317N. 457 Comment
  SEINET10471986  Allium obtusum Mary Susan Taylor 1980-5-27 Taylor 2695 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC101188  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2009-4-18 9730 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 758 Comment
  CHSC75558  Allium obtusum var. conspicuum G. F. Hrusa; T. D. Wilfred 1997-5-8 13750 Butte Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  CHSC9137  Allium peninsulare Terril Wolt 1970-4-23 30 Butte In upper Bidwell Park, at end of road, up N. side of canyon, Chico. 60 Comment
  CAS-BOT-BC132073  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Near Durham Comment
  UC169648  Allium validum Mrs. R. M. Austin Aug. 1896 222 Butte Colby Comment
  UC1562329  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1990-6-27 4328 Butte 0.3 mi. w.-n.w. Buckeye (site) (Oro-Quincy Hwy. at s. edge of Walker Plains) 1536 Comment
  CHSC26460  Alnus rhombifolia P. Moyer 1971-10-1 24 Butte CSUC campus. 70 ft. w of Esplanade, n side of Big Chico Ck. 60 Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  CDA5624  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC83959  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  HSC86000  Alopecurus saccatus John E. Hunter 1986-3-30 41 Butte Ca. 1 km E Chico, 50 m S Hwy. 32. 75 Comment
  JEPS104098  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  SACT000318  Alopecurus saccatus Annette Waters 1958-4-19 Butte in area which has recently been submerged and is now drying out, still wet. At edge of road in rocky alluvial soil. En route from Oroville to Chico, 2.6 miles southeast of junction with highway 99E Comment
  JEPS120614  Amaranthus albus Lowell Ahart 2013-11-13 19227 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
  RSA718045  Amaranthus deflexus R. D. Fischer 2005-9-14 858 Butte Northern Sierra Nevada foothills, lower Paradise, at a residence on Black Olive Street 366 Comment
  UCD97225  Amaranthus hybridus T. Gantenbein 1999-8-11 PDR11 98787 Butte Richvale. Comment
  RSA6525  Ammannia coccinea Jens Clausen 1932-9-16 658 Butte 20 miles south of Chico, between Richvale & Nelson Comment
  JEPS110076  Ammannia robusta Lowell Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CAS-BOT-BC213950  Amsinckia John Thomas Howell 1976-4-2 51552 Butte About 2 miles southeast of Chico 60 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
  UC726941  Amsinckia A. A. Heller 1941-4-19 16068 Butte n side of Sandy Gulch (Richardson Springs Road; at places about Chico); Chico Comment
  UCD118945  Amsinckia eastwoodiae M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Cleark Creek Cemetary, ca. 1 mile E of Clark Road, ca. 7 miles SW of Paradise. 152 Comment
  RSA0090970  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  RSA754453  Amsinckia intermedia L. Ahart 2009-4-17 15545 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
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC65776  Amsinckia lycopsoides Vernon H. Oswald 1996-4-10 7351 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the levees at the NE corner of Tract 10.2, Sanctuary 1. 32 Comment
  POM33358  Ancistrocarphus filagineus C. C. Bruce 1897-06 2111 Butte Fields Comment
  CHSC102295  Andropogon virginicus var. virginicus Lowell Ahart 2009-10-7 16409 Butte Just underwater when the Thermalito Afterbay is full, Larking Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 136 Comment
  CHSC30774  Angelica californica M. S. Taylor 1980-9-12 3335 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w from the Hwy down a dirt rd. 975 Comment
  CAS-BOT-BC137750  Anthoxanthum odoratum Lowell Ahart 1988-7-31 6150 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  SEINET10511717  Anthoxanthum odoratum Vernon H. Oswald, Lowell Ahart 1988-6-17 Oswald 3402 Butte Pinkard Creek ca. 1.5 mi N of Lost Creek Reservoir. 1067 Comment
  CHSC28500  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor 1979-7-22 2169 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge over Hwy 70, ca. 27 mi n of Oroville. 487 Comment
  UC426935  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville 1650 Comment
  CHSC38260  Apocynum cannabinum Vernon Oswald 1983-6-2 604 Butte Upper Bidwell Park, Chico, at the e end of Yahi Trail. 207 Comment
  UC118801  Aquilegia formosa Mrs. R. M. Austin 1890-1 478 Butte Colby Comment
  CHSC52457  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-16 207 Butte Crane Valley; streamlike on rocks, in opening of Fir Forest. 1560 Comment
  CHSC52683  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 330 Butte N part of county, ca. 0.9 mi W of Cherry Hill. 1414 Comment
  CHSC29376  Arabidopsis thaliana R. A. Schlising; R. Banchero 1980-6-2 3622 Butte 10.3 mi n of jct Forest Ranch Road (which is just n of village of Forest Ranch), along Hwy 32. Comment
  CHSC13800  Arbutus unedo M. S. Taylor 1974-11-22 334 Butte In President's back yard, California State University, Chico, campus. Comment
  CHSC33970  Arceuthobium abietinum M. S. Taylor; L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC48607  Arceuthobium occidentale Vernon Oswald 1982-11-8 12 Butte Near State Highway 32 7.9 mi n-e of Chico. 463 Comment
  CHSC33288  Arctostaphylos S. Posner; K. Stern 1972-9-24 1 Butte 200 yds south of Humbug Rd., 3 miles east of Skyway. Comment
  RSA629064  Arctostaphylos Jon E. Keeley 1983-6-27 7818 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA632998  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27476 Butte Cohasset. 630 Comment
  RSA633004  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27450 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CAS-BOT-BC24411  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Huboldt Grade, about 12 mi. from Chico. Comment
  CHSC100793  Arctostaphylos manzanita subsp. manzanita Lowell Ahart; John Dittes, Steve Green 2009-1-17 15468 Butte On the north side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  UC725751  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1941-12-17 16338 Butte Neal Rd 3 mi below Paradise Comment
  POM77541  Arctostaphylos mewukka C. C. Bruce 1897-01 1792 Butte Foothills Comment
  RSA31987  Arctostaphylos mewukka A. A. Heller 1942-1-4 16348 Butte Neal Road west of Optimo Lodge. Comment
  UCD52377  Arctostaphylos mewukka L. Ahart 1985-11-17 4840 Butte Near Kunkle Reservoir; about 2 miles south of Paradise. 518 Comment
  SBBG50284  Arctostaphylos mewukka subsp. truei G. L. Smith 1975-4-9 Butte Magalia Comment
  CHSC11946  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of 'the Summit'. 2100 Comment
  POM193357  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  UC478485  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte ridge e the Summit; Jonesville 640 Comment
  SEINET10449251  Arctostaphylos patula Mary Susan Taylor 1981-5-13 Taylor 3701 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
  SEINET11987499  Arctostaphylos truei Unknown 1981-1 s.n. Butte 3 mi NE of Magalia Comment
  SEINET10449337  Arctostaphylos viscida Lowell Ahart 1985-2-17 Ahart 4841 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  CAS-BOT-BC47373  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51086 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48283  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-3-27 s.n. Butte Swedes Flat road, near Bangor. 304 Comment
  CAS-BOT-BC48295  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51085 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC21776  Arctostaphylos viscida subsp. viscida Robert A. Schlising 1974-9-17 3158 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  CHSC31693  Arctostaphylos viscida subsp. viscida L. Ahart 1976-2-15 1009 Butte Ahart Ranch. Along North Honcut Creek on dry rocky soil. Peter Ahart Ranch, Honcut. 53 Comment
  CHSC50037  Arctostaphylos viscida subsp. viscida Lowell Ahart 1990-3-9 6412 Butte About 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  OBI74984  Arctostaphylos viscida subsp. viscida Hannah M. Fugle 2011-1-15 3 Butte Magalia, ca. 150 ft NW of Coutelenc rd, ca. .25 mi N of Alphy's ln. 762 Comment
  UC1562488  Arenaria congesta var. congesta Vernon Oswald and Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi n of its junction Philbrook Rd. (w of Philbrook Reservoir); Red Fir Forest 1706 Comment
  UC1748290  Arenaria kingii var. glabrescens L. P. Janeway and B. Castro 1999-8-1 6512 Butte 0.3 mi N of: 0.5 mi SW of Summit Lake top of Snow Mountain 2017 Comment
  RSA718156  Aristida oligantha L. Ahart 2006-10-13 13504 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 34 Comment
  CHSC49508  Aristida ternipes var. hamulosa Vernon Oswald 1985-6-10 1826 Butte Hwy 32 3.1 mi e of Hwy 99. 164 Comment
  CHSC32666  Aristolochia californica M. S. Taylor 1981-3-24 3442 Butte Steep embankment, s side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  CHSC90617  Aristolochia californica Richard Ernenwein 1993-4-20 143 Butte Keefers Grist Mill monument site, Rock Creek Dr., c. 0.3 mi e of jct. of Rock Creek Rd. with Cohasset Hwy at Butte Lumber Co. mill, ca. 3 mi e of Chico airport. Comment
  HSC85969  Aristolochia californica J. Hunter 1986-2-27 16 Butte 2 km E Chico, 15 m S Chico Creek 70 Comment
  SEINET10475902  Aristolochia californica Mary Susan Taylor 1973-1 Taylor 49 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC45778  Arnica dealbata Vernon Oswald 1984-7-2 1332 Butte Intersection of Skyway (Bull Hill Rd.) and Humbug Rd. 1584 Comment
  CHSC31588  Artemisia douglasiana L. Ahart 1977-9-20 1583 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS110297  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 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
  UC1563294  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte 1/4 mi e Canyon Creek Bridge across Lake Oroville; Lake Oroville, East Fork Canyon Creek 259 Comment
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Mar 31 2009
  RSA126008  Asarum hartwegii E. K. Balls 1957-5-22 22514 Butte N Fork Feather River, above Camp Rogers, on trail to Buck s Lake 640 Comment
  CHSC115447  Asclepias cordifolia M. Sutton; K. Schierenbeck 2013-5-5 46 Butte Deer Creek. 657 Comment
  SEINET10961641  Asclepias eriocarpa R. Carter 1966-7-6 Carter 465 Butte 7 mi E of Oroville on E side of Feathervale, 0.23 mi S of intersection of Wyandotte-LaPorte Rds. 244 Comment
  CHSC4693  Asclepias fascicularis R. Carter 1966-7-6 464 Butte Found ca. 7 mi. E of Oroville on NE corner of intersection of Miners Ranch Rd. and Mt. Ida Rd. 243 Comment
  CHSC38265  Asclepias speciosa Vernon Oswald. 1983-6-14 682 Butte Upper Bidwell Park, Chico, 100 ft. e of the turn-around at the e end of Upper Park Rd. 207 Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  CAS-BOT-BC65850  Aspidotis carlotta-halliae M. S. Taylor 1979-3-19 1927 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville 487 Comment
  CHSC28515  Aspidotis densa M. S. Taylor; J. D. Jokerst 1979-10-13 2263 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC36896  Aspidotis densa L. Ahart 1982-6-15 3566 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC38247  Aspidotis densa Vernon Oswald 1983-6-14 681 Butte Upper Bidwell Park, Chico, at Bear Hole. 97 Comment
  CHSC44076  Aspidotis densa L. P. Janeway 1987-7-5 2466 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  LA210509  Aster alpigenus var. andersonii E. B. Copeland; 1930-7-26 486 Butte Jonesville 1550.0 Comment
  POM219492  Aster eatonii H. F. Copeland 1927-9-2 407 Butte Jonesville. Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  CHSC825  Astragalus gambelianus M. Roberson 1956-5-2 Butte SW of Paradise along Skyway. 426 Comment
  SEINET10452232  Astragalus pauperculus Mary Susan Taylor 1984-4-6 Taylor 5410 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
  CHSC28411  Athyrium filix-femina M. S. Taylor 1977-7-16 1422 Butte Along west branch of Feather River, ca. 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  CAS-BOT-BC68694  Athyrium filix-femina var. californicum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd. (Next creek e of Little Ram Creek), 975 Comment
  CAS-BOT-BC66023  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 26 Butte Jonesville 1600 Comment
  CHSC10741  Athysanus pusillus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET10479056  Atriplex argentea subsp. expansa Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5156 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  SEINET3930601  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, south of Parking Area 5 Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh.; 0 30 Comment
  CAS-BOT-BC176604  Atriplex serenana var. serenana Lowell Ahart 1981-7-26 3007 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  JEPS90627  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC34170  Atriplex triangularis L. Ahart 1981-9-10 3146 Butte On wet soil along the edge of a ditch near entrance to Graylodge Waterfowl Mgmt HQ, w of Pennington Rd, ca. 12 mi sw 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
  SEINET10517561  Avena barbata Lowell Ahart 1974-4-24 Ahart 433 Butte Along North Honcut Creek on moist sandy soil. Peter Ahart Ranch, Honcut. Foothill Woodland. 150 Comment
  CHSC4363  Avena fatua V. Hagaman 1966-4-25 Butte On CSC Campus. Comment
  JEPS110442  Avena fatua Lowell Ahart 2005-12-11 12515 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  JEPS113220  Azolla microphylla Lowell Ahart 2007-2-14 13562 Butte Dredge ponds along the east side of Wilson Creek, about 1/2 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut 49 Comment
  CHSC78991  Baccharis pilularis Lowell Ahart 2000-11-4 8715 Butte About 50 yards south of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  JEPS87563  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte about 3 air mi w of Forbestown (on n side of Forbestown Road, about 200 yards e of the intersection of Black Bart Road and Forbestown Road); Forbestown Road 609 Comment
  CHSC51719  Baccharis pilularis subsp. consanguinea M. Bailey 1990-10-30 479 Butte Growing along south side Middle Branch Clear Creek, at a point halfway between Butte Campus Drive and service road. Butte College Campus. Comment
  SEINET11842155  Baccharis pilularis subsp. consanguinea D. R. Fisher 1981-1 20 Butte Singer Creek, ca 1 km W of hiway 99, 16 km N of Chico 58 Comment
  JEPS115263  Baccharis salicifolia subsp. salicifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15443 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC50099  Balsamorhiza sagittata Vernon Oswald 1990-5-12 4203 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  CHSC42510  Barbarea verna Lowell Ahart 1987-5-6 5565 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
  CHSC127  Berberis aquifolium var. dictyota F. Roos 1930-4-5 Butte Paradise. 548 Comment
  CHSC5962  Berberis thunbergii M. MacArthur 1968-6-17 178 Butte Location: ca. 10 ft. NW of Auditorium SW entrance, Chico State College campus. 60 Comment
  CHSC112540  Bergia texana B. Castro; Andy Rogers 2014-7-15 2032 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 0.4 mi downstream (W) of its crossing under the Cohasset Hwy bridge. In central channel excavated in a 2010 sediment removal project. 54 Comment
  CHSC113619  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east of Oroville. 226 Comment
  RSA0036436  Betula Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, on the north side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UC141888  Betula glandulosa Mrs. R. M. Austin July 1896 63 Butte Colby Comment
  CHSC97740  Bidens frondosa Lowell Ahart 2007-11-3 14570 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  HSC97042  Bidens frondosa L. Ahart 2006-9-11 13274 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 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
  SEINET10839335  Bidens frondosa Mary Susan Taylor 1979-10-2 Taylor 2208 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  HSC23358  Blennosperma nanum var. nanum L. Walk 1971-3-14 2 Butte E side of Cherokee Rd., ca. 0.7 mile S of Oregon City Junction and ca. 50 yards from the road 610 Comment
  CAS-BOT-BC15943  Boechera breweri subsp. breweri Lowell Ahart 1980-8-2 2520 Butte Humboldt Peak. 2300 Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. Comment
  CHSC28767  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 249 Butte On N. sides of lava boulders S. (within 100 yds.) of Little Chico Cr. 243 Comment
  LA204403  Boechera platysperma E. B. Copeland; 1931-6-19 643 Butte Jonesville 1550.0 Comment
  UC478515  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville 1550 Comment
  UC600709  Boechera platysperma H. F. Copeland 1932-8-16 Butte Jonesville 1500 Comment
  RSA166348  Boisduvalia cleistogama D. M. Moore 1960-6-1 90 Butte 1.1 mile W of U.S. 40A on road to Honcut Comment
  SEINET10453127  Boisduvalia densiflora Mary Susan Taylor 1978-7-18 Taylor 1687 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  SEINET10874029  Boisduvalia stricta Mary Susan Taylor 1980-5-31 Taylor 2755 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
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  RSA0101689  Botrychium simplex var. simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  CHSC104858  Brachypodium distachyon Lowell Ahart 2010-6-20 16814 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcutt Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC110136  Brachypodium distachyon L. P. Janeway 2012-4-29 10808 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.4 km west of the powerlines. 136 Comment
  CHSC80541  Brassica nigra Lowell Ahart 2001-5-10 8740 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS122267  Brassica nigra Lowell Ahart 2014-4-9 19336 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  UC204947  Brassica nigra A. A. Heller 1914-3-13 11199 Butte low hills 8 mi n of Oroville (in many places in the Sacramento Valley); Sacramento Valley Comment
  CHSC110133  Brassica rapa L. P. Janeway 2012-3-30 10802 Butte Sacramento Valley. West side of Hwy 99 about 30 m south of Comanche Creek and 1.0 km south of Skyway/East Park overpass; Chico. 66 Comment
  CAS-BOT-BC145540  Briza minor Lowell Ahart 1979-5-11 s.n. Butte Honcut, Peter Ahart Ranch. 50 Comment
  JEPS116080  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, 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
  CHSC27330  Brodiaea californica T. B. Devine 1977-5-22 380 Butte Meridian Roadside 2.5 mi n of Hwy 99. 67 Comment
  UCD143642  Brodiaea californica Louis K. Mann 1957-5-26 s.n. Butte Collected 11.6 mi. S. of Chico on 99E near culvert B711+90 Butte County. Comment
  UC203643  Brodiaea californica var. californica A. A. Heller 1914-5-11 11385 Butte 8 mi n Oroville Comment
  SEINET10472612  Brodiaea coronaria Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4686 Butte Along edge of Hurleton Swedes Flat Rd, ca. 2 mi S of Forbestown Rd, ca. 12 mi SE of Oroville; Foothill Woodland; 450 m. 450 Comment
  RSA21175  Brodiaea coronaria subsp. coronaria Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4.5 mi W of Oroville on road to Rickvale. 46 Comment
  CAS-BOT-BC483078  Brodiaea elegans subsp. elegans Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  UCD77176  Brodiaea minor Robert E. Preston 2002-6-28 1893 Butte Forbestown. 832 Comment
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  JEPS26741  Brodiaea sierrae P. C. Hutchison 1961-6-9 2091 Butte on Hwy US Alt. 40 7 mi s Jarbos Gap; canyon of the north fork of the Feather River canyon Comment
  JEPS94979  Bromus alopecuros Lowell Ahart 1997-5-5 7737 Butte about 12 mi s of Oroville (about 2 mi n and 1/10 mi e of Honcut, Peter Ahart Ranch); Peter Ahart Ranch 33 Comment
  SEINET10508554  Bromus alopecuros Lowell Ahart 1985-5-9 Ahart 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC94309  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
  CHSC41172  Bromus diandrus L. P. Janeway; Gary Benson, Randy Harrison 1984-9-10 Butte Plumas N.F. ECOS plot 11-044. Along County road 52515A above Mayaro and N Fk Feather River. 762 Comment
  CHSC11332  Bromus hordeaceus Lowell Ahart 1971-4-25 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35661  Bromus hordeaceus R. E. Preston 1982-4-22 249 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC42846  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  UCR237316  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18734 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC44452  Bromus japonicus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  CAS-BOT-BC162458  Bromus laevipes Lowell Ahart 1977-6-2 1471 Butte Peter Ahart Ranch, Honcut. Along Honcut Creek. 50 Comment
  CAS-BOT-BC162358  Bromus madritensis John Thomas Howell; Gordon H. True 1967-6-11 42558 Butte Sierra Nevada. On northwest side of Feather RIver Canyon near Pulga Bridge. Comment
  JEPS118076  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 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
  CAS-BOT-BC162203  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  CHSC28543  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On w side of Hwy 32 on edge of forest., ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CAS-BOT-BC161961  Bromus rubens Lowell Ahart 1962-4-20 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  JEPS87479  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte at Camp 18 Camp 18 1158 Comment
  CHSC49524  Bromus tectorum Vernon Oswald 1984-5-21 1196 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. On the abandoned railroad 0.5 mi s of the Little West Fork of the West Branch of the Feather River. 853 Comment
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CHSC43595  Callitriche heterophylla var. bolanderi Vernon Oswald 1987-5-25 2926 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. In a pond along a channel. 79 Comment
  CHSC114988  Callitriche marginata Lowell Ahart 2015-4-28 20062 -A Butte 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC6640  Calocedrus decurrens M. MacSrthur 1968-6-22 275 Butte NE ep bld. Ca. 30 ft., Chico State College. 60 Comment
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Aug 28 2018
  JEPS119725  Calocedrus decurrens Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18267 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC487511  Calochortus albus A. A. Heller 1914-5-8 11375 Butte Plateau above Clear Creek on the Paradise road Comment
  HSC23375  Calochortus albus R. N. Bowman 1971-4-18 2 Butte W side of Cherokee Rd., 7.3 mi. S of Hwy. 70 183 Comment
  SEINET10469580  Calochortus albus Mary Susan Taylor 1973-1 Taylor 16 Butte Vicinity of Oroville. Comment
  SEINET12044754  Calochortus albus J. H. Morrison 1932-1 s.n. Butte Durham Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  CHSC25013  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC51941  Calochortus luteus Denise Monceau 1984-4-20 4 Butte Ca 6 mi NE on Wildwood Ave, SE side of rd, 1/4 mi NE on trail. 83 Comment
  CHSC81330  Calochortus luteus J. Trizzino 2001-4-25 55 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  RSA113891  Calochortus luteus E. K. Balls, Lee W. Lenz 1955-5-13 20482 Butte 3.2 miles north of Oroville on road to Magalia and Paradise 122 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
  CHSC24782  Calochortus monophyllus D. E. Hale 1976-4-10 15 Butte On n side of Vilas Rd, ca. 25 m e of Vilas Rd - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  CHSC3298  Calochortus monophyllus M. L. Hillier 1966-4-23 Butte Along Hwy. 32 9 1/2 miles e. of C. S. C. Admin. Build. Chico. Comment
  CAS-BOT-BC492607  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 s.n. Butte Near Paradise in the lower Sierra Nevada, in the Lower Transition Zone 600 Comment
  SEINET10469601  Calochortus monophyllus Mary Susan Taylor 1973-1 Taylor 28 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
  UC119782  Calochortus tolmiei Dr. E. B. Copeland 1903-4-10 3023 Butte Chico Comment
  SEINET7073602  Calochortus weedii 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
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Jul 17 2018
  CHSC46246  Calycadenia fremontii Vernon H. Oswald 1989-5-2 3758 Butte Pasture located S of Broyles Rd and W of Hwy 99 owned by Howard Wurlitzer. 53 Comment
  UC762558  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of Chico Comment
  CAS-BOT-BC270050  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  CAS-BOT-BC106088  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 mi s. of Berry Cr. Inn 600 Comment
  CAS-BOT-BC106091  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi. e. of Pentz, Canyon of W. Branch of N. Fork of Feather River 182 Comment
  CAS-BOT-BC106122  Calycadenia oppositifolia Lowell Ahart 1988-7-29 6084 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor 304 Comment
  SBBG7833  Calycadenia oppositifolia D. D. Keck 1933-5-31 2411 Butte 4.3 mi N of Chico on Richardson Springs Rd Comment
  UC195401  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte about 5 mi n of, on the Richardson Springs road Chico Comment
  UC1971679  Calycadenia oppositifolia 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Road jct, ca. 200 yds N on small dirt powerline road (very near to GDC 553, 558) 653 Comment
  CHSC109849  Calycadenia truncata L. P. Janeway 2012-6-7 10855 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC27559  Calycadenia truncata Robert A. Schlising 1977-10-9 3207 Butte NE of Chico on Cohasset Road, 3.0 mi NE of jct road to Richardson Springs and 3.3 mi NE crossing of Mud Creek. Comment
  UC194202  Calycadenia truncata H. M. Hall 1914-7-18 9756 Butte Little Chico Creek 152 Comment
  UC1971668  Calycadenia truncata 1977-7-7 2034 Butte 2.3 mi SE of Oroville - Quincy Hwy on Big Ridge Road NW of Oroville 628 Comment
  CAS-BOT-BC90922  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 miles east of Oroville on Highway #24. Comment
  POM253352  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte Feather River Hwy 25 miles from Oroville. Comment
  OBI5732  Calyptridium monospermum H. F. Copeland 1928-8-20 1016 Butte Jonesville 1524 Comment
  CAS-BOT-BC223609  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19869 Butte Forest Ranch, 22 km NE of Chico on Rte. 32, at Schott Road junction 800 Comment
  HSC96837  Calystegia malacophylla subsp. malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards S of Humboldt Rd. about 1 3/8 mi. SW of Butte Meadows 1401 Comment
  UC1933428  Calystegia occidentalis subsp. fulcrata T. A. Ranker and P. G. Trapp 1994-6-17 1614 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  CHSC70521  Calystegia occidentalis subsp. fulcrata R. A. Schlising 1972-5-4 3064 Butte W of Wrightwood in Angeles National Forest; at Grassy Hollow Campground, 2.6 mi W of junction N2 and Angeles Crest Hwy at Big Pines Station. Comment
  CDA13284  Calystegia occidentalis subsp. occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-9 13132 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC45797  Camassia quamash subsp. quamash L. P. Janeway 1988-6-25 2898 Butte Small mdw along Bull Hill rd 2.9 mi from The Skyway. 1508 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
  UC177576  Campanula scouleri H. M. Hall 1914-7-1 9798 Butte near Butte Meadows (Sierra Nevada Mountains); Sierra Nevada Mountains 1280 Comment
  CHSC38043  Capsella bursa-pastoris R. E. Preston 1983-1-9 373 Butte At roadside; w side of the Midway, 200 yds. n of Butte Creek, ca. 3 mi sse of Durham. 39 Comment
  JEPS122272  Capsella bursa-pastoris Lowell Ahart 2014-4-9 19326 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
  CHSC48318  Cardamine breweri var. breweri Vernon Oswald 1984-5-9 1181 Butte Near Camp Lassen, Chico Meadows on Scout Rd. ca. 1 mi n of Butte Meadows. Near Chico Creek. 1292 Comment
  CHSC3641  Cardamine californica Alice L. Stoll 1966-2-28 36 Butte 9.2 miles N.E. of Chico, Upper Bidwell Park. Comment
  CHSC10623  Cardamine oligosperma Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UC1609210  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  UC203628  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte Canyon of Big Chico Creek Canyon Big Chico Creek 68 Comment
  CHSC83932  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7740 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 329 Comment
  CHSC83933  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7742 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CHSC105981  Carex Lowell Ahart 2010-9-21 17204 Butte Open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CAS-BOT-BC18463  Carex abrupta L. P. Janeway 1986-9-1 1826 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC52276  Carex abrupta L. P. Janeway; C. A. Janeway 1986-9-13 1851 Butte Wide flat meadow along Humbug Rd ca 1 1/2 mi SW of Humbug Summit. 1859 Comment
  CHSC39394  Carex amplifolia L. Ahart 1983-9-17 4439 Butte Ca. 1/4 mi se of Stirling City. 1100 Comment
  UC478551  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville 1500 Comment
  CHSC48078  Carex athrostachya L. P. Janeway; R. A. Schlising 1988-7-1 2924 Butte Small lake ca 1/2 mi W of Butte Creek House. 1813 Comment
  CHSC98951  Carex bolanderi Lowell Ahart 2008-6-2 14806 Butte On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  JEPS124417  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  SEINET7552591 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11403 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  UC1609336  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek); Bolt Creek 1325 Comment
  UCD140161  Carex bolanderi L. P. Janeway 1987-6-13 2206 Butte Dogwood Creek along the road to Mayaro 2.4 miles east of the Concow Road. 990 Comment
  SEINET10905651  Carex brainerdii Mary Susan Taylor 1978-5-6 Taylor 1578 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC44118  Carex capitata L. P. Janeway 1988-7-29 3111 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  UCD140240  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte South side of Butte Creek 1/2 mile west of Cherry Hill. 1402 Comment
  JEPS120128  Carex densa Lowell Ahart 2012-5-20 18095 Butte About 15 feet east of the Guardian Trail, southeast part of Upper Bidwell Park, northest of Chico. Comment
  JEPS94824  Carex densa Lowell Ahart 1998-6-9 7989 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC19849  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 2506 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC52860  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising 1988-8-2 3152 Butte Ca 1 1/2 air mi NW of Butte Mdws; along Cascade Cr ca 1/4 mi upstream of the Soda Springs campground. 1143 Comment
  CHSC111132  Carex feta Lowell Ahart 2012-6-2 18138 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oriville. 286 Comment
  CHSC44439  Carex feta Lowell Ahart 1988-6-23 6065 Butte In a small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC99431  Carex feta Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11405 Butte Ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1447 Comment
  SEINET7558570 Image available Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley, at head of Concow Creek. Pulga 7.5' quad. 1116 Comment
  CAS-BOT-BC19998  Carex feta L. P. Janeway 1988-6-19 2823 Butte Along Honey Run Road 0.9 mile SW of Skyway. 411 Comment
  CHSC59004  Carex fracta Lowell Ahart 1992-7-26 6850 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  RSA739648  Carex geyeri L. P. Janeway, Linus Gog 2008-7-18 9435 Butte Butte County: High Cascade Range along Humbug Summit road, above the Cornelia Lott Sank Memorial Spring (which feeds W branch Feather River) 1536 Comment
  CHSC63288  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  SEINET12649429 Image available Carex gracilior Lowell Ahart 2009-1 15911 Butte 59 Comment
  SEINET4231863 Image available Carex gracilior Unknown 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands. Comment
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 Comment
  CHSC52915  Carex integra L. P. Janeway 1988-6-25 2861 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CHSC94426  Carex integra Lowell Ahart 2006-8-15 13175 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  HSC87070  Carex laeviculmis L. P. Janeway 1987-6-26 2305 Butte At Camp Creek, 2.5 mi. E of Granite Ridge along road to Lynch and Logue Meadows 1366 Comment
  HSC87071  Carex laeviculmis L. P. Janeway 1987-6-13 2203 Butte Edge of creek at road crossing, road to Mayaro, 1 mi. E of Concow Rd. 1107 Comment
  SEINET10713179  Carex laeviculmis A. Arthur Heller 1913-6-7 Heller 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC44935  Carex lemmonii Lowell Ahart 1988-7-31 6145 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  JEPS121961  Carex mariposana Lowell Ahart 2014-7-7 19575 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC32157  Carex multicaulis Lewis Samuel Rose 1937-6-10 37366 Butte 8 mi E of Hurleton 792 Comment
  CHSC52242  Carex nudata L. P. Janeway 1987-5-20 2089 Butte At edge of North Fork Feather River at the Plumas County line. 472 Comment
  UCD140697  Carex nudata Robert E. Preston 1990-4-19 595 Butte on banks of Butte Creek, at site of proposed Forks of Butte diversion dam, west of DeSabla. 676 Comment
  SEINET4231788  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET8989731 Image available Carex pachystachya Unknown 2003-1 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  CHSC44695  Carex pellita L. P. Janeway 1988-7-29 3112 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  SEINET7575671 Image available Carex specifica Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11385 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  SEINET7576411 Image available Carex straminiformis Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11381 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  CAS-BOT-BC116733  Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  JEPS102947  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River 1402 Comment
  SEINET7577169 Image available Carex subfusca Ray Tallent 1987-8-18 955 Butte Lassen National Forest. River bank just above bridge near West Branch (of the Feather River) campground. 1620 Comment
  NY11376  Carex teneriformis H. M. Hall 1914-7-25 9781 Butte Jonesville, Northern Butte Co. 1554.5 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  SEINET7486553 Image available Carex texensis Peter F. Zika 2010-1 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, S of Mansion Avenue, Chico Comment
  CHSC44989  Carex utriculata S. C. Morey 1983-7-23 574 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS117595  Carex utriculata Lowell Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC113958  Carex vesicaria Lowell Ahart 2014-7-7 19577 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  JEPS121962  Carex vesicaria Lowell Ahart 2014-7-7 19577 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  JEPS122078  Carex vesicaria Lowell Ahart 2014-7-13 19668 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  HSC93554  Carex xerophila G. Fred Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Corner of Skyway Rd. and road to Paradise Lake at N boundary of Magalia 580 Comment
  CHSC25037  Castilleja T. Lorenz 1972-4-18 1 Butte Found ca. 12 mi n w of Magalia on Centerville road. 609 Comment
  CAS-BOT-BC248932  Castilleja Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  CHSC44706  Castilleja affinis R. Banchero 1980-3-27 82 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC255463  Castilleja applegatei var. pinetorum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC103933  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CHSC83922  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  UCSB63618  Castilleja attenuata Holloway, Steve 1986-4-12 Butte 100 m of Chico Municipal Airport; Richardson Springs Quadrangle; NE 1/4; Sec. 27, T23N, R1E 102 Comment
  CHSC87197  Castilleja campestris subsp. campestris Lowell Ahart 2004-4-4 10724 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC24783  Castilleja lacera C. E. Stopher 1976-4-13 18 Butte 2.4 km s of Forest Ranch. Comment
  CHSC39932  Castilleja lacera M. S. Taylor; V. Oswald 1984-4-4 5393 Butte S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Comment
  CHSC62585  Castilleja lacera L. P. Janeway 1993-4-27 4332 Butte Upper Bidwell Park, Chico. Steep southeast-facing slope just below the rin, overlooking Day Camp, ca. 0.3 mi east of the powerlines. 228 Comment
  UC885406  Castilleja pruinosa A. A. Heller 1938-7-20 15277 Butte ridge between Inskip and Chaparral 1524 Comment
  POM43184  Castilleja subinclusa C. C. Bruce 1897-06 1938 Butte Little Chico. Comment
  UC532168  Castilleja tenuis Herbert F. Copeland 1934-7-9 Butte edge of Butte Creek Meadows (Jonesville Region); Jonesville Region Comment
  CHSC115435  Catalpa speciosa Ariana Gehrig 2013-5-7 Butte City of Chico. Big Chico Creek, near campus. 64 Comment
  JEPS117625  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico 67 Comment
  CHSC11994  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville. 1550 Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  CAS-BOT-BC50781  Ceanothus integerrimus A. A. Heller 1928-4-30 14536 Butte Along the Neal Road about 3 miles below Paradise Comment
  CHSC23697  Ceanothus integerrimus M. S. Taylor 1976-5-5 1107 Butte Abundant ca. 15 ft n of Hwy 70, at Jarbo Gap, ca. 15 mi ne of Oroville. Comment
  SEINET12210559  Ceanothus integerrimus Unknown 1970-1 118 Butte ca 20 mi N of Oroville, on left side of Hwy. 70 Comment
  SEINET13945960 Image available Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-1 1620 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min TOPO map); ca 1300 ft alt., T21N R4E SEC6 396 Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  CAS-BOT-BC51726  Ceanothus lemmonii W. I. Follett; E. B. Follett 1948-6-1 s.n. Butte Calif. Hwy. 24, 6.2 mi. N. of West Branch Feather River Comment
  RSA21541  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8727 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  RSA300946  Ceanothus lemmonii D. C. Michener 1982-7-28 4141 Butte 4.4 miles SE of jct with 32 on Garland road, 3.1 miles NW of jct of Powellton road and Skyway road near De Sabla Comment
  RSA0028424  Ceanothus lemmonii Jon E. Keeley 1996-6-20 27474 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SEINET10493642  Ceanothus lemmonii Mary Susan Taylor 1980-5-27 Taylor 2736 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  SEINET5339369  Ceanothus prostratus W. Short 1959-4-11 2 Butte 10 miles from junction of US 40 and Calif. 20 west, 100 ft. from highway. Comment
  UC2026878  Cedrus deodara Lowell Ahart 2012-10-12 18483 Butte About 50 yards east of the east side of the Deer Pen, east of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. Comment
  JEPS120067  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17997 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CDA43060  Celtis sinensis L. P. Janeway, B. Castro 2010-6-4 9991 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. Comment
  CDA29278  Centaurea cineraria Ed Finley 2009-5-14 s.n. Butte Paradise. Private residence: 5252 Edgewood Lane, near Pearson Road. 0 Comment
  JEPS98599  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CHSC6085  Centaurea solstitialis B. Wilson 1968-5-17 203 Butte E of Broadway and First Street, Chico. 59 Comment
  CHSC6173  Centaurea solstitialis J. Wheeler 1968-5-17 371 Butte East of intersection of Broadway and First Street, Chico. 59 Comment
  CAS-BOT-BC284505  Centaurea solstitialis Forman T. McLean 1921-10-20 33 Butte Chico Comment
  CAS-BOT-BC284506  Centaurea solstitialis John Thomas Howell 1959-9-20 34677 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  CHSC105610  Centaurea stoebe subsp. micranthos L. P. Janeway 2010-8-5 10136 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N48 (closed) about 300 m south of Milsap Bar Road; 1.1 km northwest of Middle Fork Feather River and 2.7 km southeast of Brush Creek town.) 996 Comment
  JEPS115250  Centaurium muehlenbergii 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
  CAS-BOT-BC288524  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CHSC87226  Centunculus minimus Lowell Ahart 2004-4-4 10716 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
  CDA13342  Cephalanthera austiniae G. F. Hrusa, T. D. Wilfred 1996-7-9 13190 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  CAS-BOT-BC222897  Cephalanthus occidentalis Lowell Ahart 1987-7-17 5828 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UC924237  Cephalanthus occidentalis var. californicus H. S. Reed 1939-7-10 298 Butte 5 mi nw Chico (banks of Sacramento River); Sacramento River 60 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC71171  Cerastium glomeratum Lowell Ahart 1998-5-30 7962 Butte About 200 yards northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, about 7 miles (air) north of Oroville. 403 Comment
  JEPS115843  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC1586402  Ceratophyllum demersum Lowell Ahart 1991-9-14 6718 Butte about 2 mi e Honcut (Joie Osgood Ranch) 45 Comment
  RSA31118  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Canyon of Big Chico Creek E of Chico. 69 Comment
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Feb 17 2016
  SFV1803  Cercis occidentalis M. L. Vincent 1961-3-30 24 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  UC398946  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville 1550 Comment
  UC600653  Chamaesaracha nana H. F. Copeland 1930-7-18 Butte Jonesville Comment
  HSC66093  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz Vernal Pool, 0.4 mi. SE of Jct. Pentz Rd. and Hwy. 99, about 10 mi. S of Chico 55 Comment
  CHSC109761  Chamaesyce maculata Lowell Ahart 2012-10-20 18498 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  RSA754388  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  RSA754842  Chamaesyce maculata L. Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1.5 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC47676  Chamaesyce nutans Lowell Ahart 1989-9-17 6388 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  CHSC26627  Chamaesyce ocellata M. P. Hayes 1977-9-12 124 Butte In the area of the gardens on Butte College Campus at the corner of Pentz and Clark roads. 90 Comment
  CHSC46363  Chamaesyce ocellata Lowell Ahart 1989-5-23 6256 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC112596  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2013-9-5 19021 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  CHSC113147  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC47422  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1984-8-19 4785 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 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
  CHSC76417  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte Just north of where the river meets the east bank, 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
  CHSC97327  Chamaesyce serpillifolia subsp. serpillifolia L. P. Janeway 2007-7-11 9114 Butte Northern High Sierra Nevada. Plumas National Forest; along the northern shoulder of Oroville-'Quincy Hwy 160 m southwest of 4-Mile Ridge Road. Occasionally common along road shoulder. 1006 Comment
  UC1563272  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte 1/2 mi W of Gold Flat (Lake Oroville, about 1 mi N of Nelson Bar Road) 213 Comment
  SEINET10529958  Cheilanthes carlotta-halliae Mary Susan Taylor 1980-5-27 Taylor 2706 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC32771  Cheilanthes gracillima J. D. Jokerst 1981-3-29 1278 Butte Top of North Table Mountain. 373 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  SEINET10479020  Chenopodium botrys Lowell Ahart 1984-6-8 Ahart 4672 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CDA3074  Chenopodium missouriense J. T. Howell 1961-9-22 36788 Butte North Fork of Feather River northeast of Pulga. 0 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
  SBBG28480  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  CHSC40084  Chlorogalum angustifolium R. M. Austin 1896-5-1 737 Butte Comment
  RSA500441  Chorizanthe polygonoides Vernon H. Oswald 1989-5-16 3771 Butte Ponderosa way on Musty Buck Ridge between Cohasset and Big Chico Creek 762 Comment
  CHSC103997  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-7 16617 Butte 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
  CHSC74115  Chorizanthe stellulata B. Castro; L. P. Janeway 1996-5-19 663 Butte Ca e air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just N of North Rim Trail ca 250 f W of jcn with trail from Diversion Dam. 335 Comment
  CAS-BOT-BC247538  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  CHSC24494  Chrysolepis sempervirens M. S. Taylor 1976-6-28 1166 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  CHSC42576  Cicuta douglasii Vernon Oswald 1985-7-15 1901 Butte N. Fork of Feather R. at Cresta Rest Area on Hwy 70 0.3 mi s of Arch Rock Tunnel 457 Comment
  RSA0047111  Cinna latifolia L. Ahart 2006-8-15 13191 Butte On the east side 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. 1570 Comment
  CHSC20255  Cirsium occidentale var. venustum T. Lorenz 1972-4-23 2 Butte Collected adjacent to highway 32, ca. 7.6 mi from highway 99 overpass. Comment
  CHSC21139  Cirsium occidentale var. venustum M. S. Taylor 1975-6-30 821 Butte Ca. 500 yds w of Cohasset Hwy, Cohasset. Comment
  CDA42837  Cirsium vulgare H. Bloo, B. Voorhees 2002-9-5 PDR 1174351 Butte Sacramento Valley; Rough area adjacent to fairway at Bidwell Golf Course. 0 Comment
  SEINET5506122 Image available Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  CHSC39040  Clarkia arcuata R. A. Schlising 1983-6-9 4420 Butte Carpenter Ridge NE of Lomo, along Humboldt Road. 1341 Comment
  CHSC90097  Clarkia arcuata Dan Morgan 1991-4-16 8 Butte S bank Butte Creek, vicinity Covered Bridge. 114 Comment
  RSA0059981  Clarkia arcuata R. T. Riding 1968-4-13 11 Butte North Table Mountain 396 Comment
  SEINET12191961  Clarkia arcuata Unknown 1978-1 12 Butte ca 300 ft. W side of Cherokee Rd, ca 5 mi S from intersection of Hwy 70 and Cherokee Rd 137 Comment
  SFV10929  Clarkia biloba M. L. Vincent 1963-6-8 394 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC48623  Clarkia biloba subsp. brandegeeae Vernon Oswald 1985-5-28 1782 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. On the road cut. 304 Comment
  CHSC85007  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 287 Comment
  JEPS105639  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt, Adam Henderson 2003-6-3 7803 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.5 km southwest of mouth of Bean Creek 283 Comment
  CHSC30014  Clarkia concinna subsp. concinna L. Ahart 1980-5-25 2341 Butte Near the edge of Ponderosa Way, ca. 2 mi s of the Ponderosa Dam, near Forbestown. 600 Comment
  UC725459  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte 22 mi from Oroville (on the Feather River Highway, just e of Jarboe Pass) 609 Comment
  CAS-BOT-BC164524  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-1 63 -47 Butte Jarbo Pass, 6.2 miles northeast Comment
  CHSC1101  Clarkia gracilis subsp. albicaulis V. Holt 1942-6-1 Butte Forest Ranch. 548 Comment
  CHSC25259  Clarkia gracilis subsp. albicaulis M. S. Taylor 1977-6-26 1380 Butte In ditch on s side of Ponderosa Way, ca. 1 1/2 mi e of Cohasset. 609 Comment
  RSA108396  Clarkia gracilis subsp. albicaulis Harlan Lewis, M. Roberts 1951-5-19 830 Butte Road from Nimshew to Butte Creek Canyon, 2.3 miles above bridge across Big Butte Creek. Comment
  SEINET10453151  Clarkia gracilis subsp. albicaulis Mary Susan Taylor 1977-6-25 Taylor 1380 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC163261  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28 993 Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  RSA0004427  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. 805 Comment
  CHSC70738  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4430 Butte Southwestern end of Watson Ridge; about 1.8 mi east-northeast of Bald Rock Dome; about 0.7 mi northwest of Fall River. Road cutbank on south-trending ridge nose. 1097 Comment
  SEINET12192832  Clarkia purpurea Unknown 1968-1 28 Butte Table Mt., ca 6 mi N of Oroville Comment
  RSA122147  Clarkia purpurea subsp. purpurea F. W. Embree 1934-4-24 43 Butte 4.5 miles north and 1.5 mile east of Bigg 38 Comment
  CAS-BOT-BC163655  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1987-5-22 5667 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC172377  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3987 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  UC1071881  Clarkia rhomboidea H. and M. Lewis 1951-5-1 824 Butte 1.65 mi s of road to Paradise (road from Oroville to Magalia) Comment
  UCD104989  Clarkia rhomboidea L. P. Janeway 1993-6-10 4378 Butte Southwest side of Watson Ridge about 1.5 miles E of Bald Rock Dome. 822 Comment
  UCR133590  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Rocky crest of ridge between Willow and Colby Creeks 1677 Comment
  SEINET10689282  Clarkia stellata Robert A. Schlising 1980-5-26 Schlising 3601 Butte Several miles sw village of Cohasset, along fireroad in chaparral e of Cohasset Road, T23N, R2E, sec 8; elevation ca 1350 feet; on shaded banks, among Quercus dumosa, Ceanothus integerrimus, Arctostaphylos viscida, A. mewukka, Rhus trilobata, Heteromeles arbutifolia. 405 Comment
  RSA0059954  Clarkia unguiculata L. Ahart 2010-6-1 16759 Butte North side of the Guardian s Trail, about 1 mile east of the power lines, Upper Bidwell Park, about 3 air miles east of Chico. 181 Comment
  CHSC43719  Claytonia palustris Vernon Oswald 1983-6-22 738 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  CHSC52114  Claytonia palustris B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 149 Butte 0.95 mi into Coon Hollow below campground, in meadow on n side of Coon Creek. 1664 Comment
  JEPS109817  Claytonia palustris Dean W. Taylor 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  CHSC10853  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS107415  Claytonia parviflora subsp. parviflora Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. South of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 481 Comment
  RSA715846  Claytonia perfoliata L. P. Janeway 2005-3-1 8342 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC440032  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1982-5-8 3419 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  JEPS117230  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2010-5-7 16614 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SEINET10830265  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3432 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
  CHSC24684  Claytonia rubra subsp. rubra D. Hattem 1976-4-10 4 Butte Population ca. 125 m e of e border of Upper Bidwell Park, Chico, ca. 50 m n of Big Chico Creek, ca. 10 mi ne of Chico. 304 Comment
  CHSC56076  Claytonia rubra subsp. rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  JEPS114738  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 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
  HSC73101  Claytonia rubra subsp. rubra D. G. Bendix 1978-4-15 14 Butte 0.8 km S of jct. of Holmwood Dr. with Rosewood Dr., Magalia 850 Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  POM97566  Clematis ligusticifolia C. C. Bruce 1897-06 1902 Butte Big Chico Comment
  CHSC42872  Collinsia parviflora Lowell Ahart 1987-5-12 5639 Butte South of Lumpkin Rodge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC13920  Collinsia sparsiflora C. Steen 1974-4-30 23 Butte Ca. 10.2 mi n of Chico on Cohassett Rd. 731 Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC11958  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  SEINET10935985  Collomia heterophylla Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4070 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  UC392188  Collomia linearis E. B. Copeland July, 1929 Butte in open woods above Jonesville 1750 Comment
  RSA719876  Collomia linearis Michael A. Vincent, K. Levings 2006-7-29 12899 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  RSA770102  Conyza canadensis L. Ahart 2008-11-4 15396 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
  CHSC94160  Corallorhiza maculata Lowell Ahart 2006-6-24 12853 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  JEPS46150  Corallorhiza maculata Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  RSA0084711  Cordylanthus pilosus subsp. hansenii L. Ahart 2009-8-3 16253 Butte W side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  RSA719716  Cordylanthus pilosus subsp. pilosus Michael A. Vincent, K. Levings 2006-7-29 12895 Butte NE of Chico along Rt. 32. Comment
  UC196062  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e Oroville Comment
  CHSC51014  Cordylanthus pilosus var. tenuis Lowell Ahart 1990-8-15 6589 Butte On the east side of the Enterprise Boat Launch Area Parking area, about 1/2 miles north-west of the Enterprise Bridge across Lake Oroville. 335 Comment
  CHSC80534  Coriandrum sativum Lowell Ahart 2001-5-10 8742 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS108800  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset 1113 Comment
  UCD95111  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. Big Spring, in Big Meadows, submerged in the artificial Lake Almanor. 1500 Comment
  SBBG128077  Cotoneaster pannosus L. Ahart 2009-5-30 15802 Butte S side of Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi SW of intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 311 Comment
  UC1586403  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam. 213 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
  CAS-BOT-BC427626  Crassula aquatica 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 50 Comment
  CHSC102898  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  JEPS103410  Crassula connata Lowell Ahart 2002-4-14 9481 Butte Area between the Railroad and the Midway Road, 50 yards S of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS87192  Crassula connata Lowell Ahart 1992-4-7 6742 Butte e side of Biggs Princeton Rd. and w. side of Southern Pacific R.R. in Biggs 30 Comment
  CHSC28638  Crassula tillaea M. S. Taylor 1979-3-31 1972 1/2 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  JEPS120955  Crassula tillaea Lowell Ahart 2013-4-20 18559 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CAS-BOT-BC427954  Crassula tillaea Lowell Ahart 1990-1-17 6407 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 301 Comment
  JEPS118636  Crataegus monogyna L. P. Janeway 2011-6-28 10247 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Lower Trail 46 m north of Upper Park Road and 90 m north of Big Chico Creek; 0.4 km west of Day Camp. Comment
  UCR51795  Crepis occidentalis subsp. pumila H. F. Copeland 1931-11-6 1532 Butte Jonesville, near Butte Creek Meadows. 1829 Comment
  CHSC33522  Crepis pleurocarpa R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4139 Butte E of N Fork of Feather River. Along Coyote Gap road, ca 0.5 mi S of Coyote Gap. 1219 Comment
  POM29974  Crocidium multicaule C. C. Bruce 1897-01 2074 Butte Foothills Comment
  CHSC39263  Cryptantha affinis Lowell Ahart 1983-6-30 4184 Butte Along the dirt road, on the east side of the West Branch of the Feather River, about 5 miles east of Stirling City. 1150 Comment
  CHSC69040  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  JEPS121985  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  UC1609326  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte about 2 mi se Bald Mountain (ne of Stirling City, on w side of a poor dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  CHSC39027  Cryptantha flaccida Lowell Ahart 1984-5-18 4607 Butte Peter Ahart Ranch, about 1.5 mi n and 1.25 mi e of Honcut, and about 12 mi s of Oroville. 50 Comment
  CHSC58256  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  UC78586  Cryptantha flaccida Mrs. R. M. Austin Apr 1896 Butte Little Chico Canyon Comment
  CHSC33414  Cryptantha torreyana R. A. Schlising; R. Banchero 1980-7-28 3932 Butte E of Jonesville, on road to Scotts John Creek area, roadsides. 1828 Comment
  CAS-BOT-BC68067  Cryptogramma acrostichoides Lowell Ahart; Vernon Oswald 1987-8-5 3179 Butte Near Humboldt Peak 2151 Comment
  CHSC40347  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  UCR7821  Cupressus macnabiana Wm. Horn Jr. 1964-7-6 640706 2 Butte Northern Sierra Nevada Mtns., 0.5 mi north of Magalia Train Station 716 Comment
  UC1191664  Cuscuta californica Herbert L. Mason and Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge Butte Sink Comment
  SEINET10496608  Cuscuta californica Mary Susan Taylor 1977-6-25 Taylor 1369 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  HSC100743  Cuscuta californica var. breviflora Lowell Ahart 2010-9-21 17232 Butte S side of a poor dirt road, 1 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1900 Comment
  CHSC94484  Cuscuta californica var. californica Lowell Ahart 2006-7-16 12959 Butte In the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC94793  Cuscuta pentagona Lowell Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 54 Comment
  JEPS115649  Cuscuta pentagona Lowell Ahart 2009-8-13 16270 Butte Collected on Melilotus albus and Artemesia douglasiana, on dry rocky soil, at the southeast side of the diversion structure that controls Mud Creek diversion and Lindo Channel, norhteast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  POM76966  Cycladenia humilis Mrs. R. M. Austin, C. C. Bruce 1898-05 s.n. Butte Doc Mill Comment
  CHSC45555  Cycloloma atriplicifolium Lowell Ahart 1981-9-26 3201 Butte Growing on a sandbar along the Sacramento River, about 6 miles west of Chico. 36 Comment
  CHSC99547  Cymopterus terebinthinus var. californicus L. P. Janeway 2008-6-15 9415 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  CHSC4385  Cynodon dactylon M. Hillier 1966-5-30 Butte In juniper bed at corner of Legion Ave and Warner St., Chico. Comment
  CHSC5966  Cynodon dactylon M. MacArthur 1968-6-17 216 Butte Ca. 5 ft SE Big Chico Creek and S of Headhouse, Chico State College campus. 60 Comment
  RSA754876  Cynodon dactylon L. Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  JEPS115300  Cynoglossum grande Lowell Ahart 2009-4-22 15570 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCD119179  Cynoglossum grande Harriet Sindel 1970-2-20 20 Butte South side of Highway 32 (old road), 7.3 miles east of Chico. 182 Comment
  CHSC116743  Cynosurus echinatus Lowell Ahart 2016-5-24 20871 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC39516  Cynosurus echinatus Lowell Ahart 1983-6-12 1495 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CAS-BOT-BC114803  Cyperus J. Zaninovich 1984-9-24 4810 Butte Growing on dry bare soil along the edge of Middle Honcut Road, 35 Comment
  UC907516  Cyperus albomarginatus John E. Chattin and Carroll Ferrell 1946-10-15 Butte 8 mi. n.e. Butte City 30 Comment
  CHSC78545  Cyperus bipartitus Lowell Ahart 2000-8-23 8663 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS110333  Cyperus bipartitus Lowell Ahart 2006-10-8 13439 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  UCSC000115  Cyperus eragrostis H. S. Yates 1936-8-19 6121 Butte 10 miles south of Durham - Chico 30 Comment
  CHSC68388  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1872 Butte Edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC45115  Cyperus flavescens Vernon Oswald 1987-8-13 3215 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
  CHSC78486  Cyperus flavescens Lowell Ahart 2000-8-23 8664 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS119909  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA0060845  Cyperus fuscus Lowell A. Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC109762  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkikng Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CHSC97312  Cyperus niger Lowell Ahart 2007-8-19 14487 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC113842  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CHSC46421  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte Large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  UCD141100  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. 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
  CAS-BOT-BC110841  Cyperus vegetus A. A. Heller 1939-8-26 15479 Butte River Road west of Chico, Lower Sonoran Life Zone Comment
  CHSC42505  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte About 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC4626  Cystopteris fragilis R. Carter 1966-3-13 299 Butte Found ca 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CHSC60941  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CDA42881  Dactylis glomerata L. Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC38805  Dactylis glomerata Vernon Oswald 1982-5-23 Butte Upper Bidwell Park, Chico, near the east end of Yahi Trail. Near Chico Creek. 207 Comment
  CHSC6063  Dactylis glomerata B. Wilson 1968-5-3 188 Butte On edge of Rd. 0.5 mi n of Magalia. On Skyway. Comment
  SEINET10507360  Dactylis glomerata Mary Susan Taylor 1980-5-27 Taylor 2645 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
  CAS-BOT-BC189895  Danthonia californica Lowell Ahart 1980-5-17 2288 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC41995  Danthonia unispicata Lowell Ahart 1973-5-6 311 Butte Along Robinson Mill Road, west of Forbestown. 457 Comment
  CHSC63720  Darlingtonia californica Lowell Ahart 1994-9-3 7547 Butte In open meadow, near the east side of the meadow, ... Field redacted by CHSC, contact the data manager for more information 1371 Comment
  JEPS108547  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge 1127 Comment
  CAS-BOT-BC8796  Delphinium gracilentum Lowell Ahart 1980-5-4 2200 Butte Near Hurlton Comment
  JEPS117187  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16760 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico 188 Comment
  POM99220  Delphinium hansenii subsp. hansenii C. C. Bruce 1897-06 1917 Butte [Unspecified] Comment
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  CAS-BOT-BC10103  Delphinium hesperium subsp. pallescens H. E. Brown 1897-5-1 207 Butte near Clear Creek Comment
  CAS-BOT-BC8026  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville 1550 Comment
  CHSC56770  Delphinium nuttallianum R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4117 Butte E of Stirling City, W of Little Kimshew Creek on top of Table Mountain. 1828 Comment
  UC600481  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte near north Willow Creek; Jonesville 1524 Comment
  CHSC56876  Delphinium patens Keith Lickey 1976-4-17 68 Butte Hwy 70, 500 m sw of Grizzly Dome Tunnel; n-nw slope. 914 Comment
  CHSC38164  Delphinium patens subsp. patens Vernon Oswald 1983-3-13 149 Butte Upper Bidwell Park, Chico, near Yahi Trail about 800 ft e of Parking Area L at Diversion Dam. Near the top of a cliff. 121 Comment
  CHSC59804  Delphinium patens subsp. patens Diana Licky 1981-5-5 Butte Concow area. Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  CHSC53295  Delphinium variegatum R. A. Emmrich 1975-4-20 81 Butte Cohasset Hwy ca. 10 yds e of roadside and 4 mi n of Chico. 60 Comment
  POM150574  Delphinium variegatum E. B. Copeland 1903-5-2 3251 Butte Chico Comment
  CHSC1463  Delphinium variegatum subsp. variegatum Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC24771  Delphinium variegatum subsp. variegatum L. J. Gut 1976-4-23 11 Butte Ca. 30 yds. s of the Skyway, ca. 15 mi e of Chico. 457 Comment
  CHSC41290  Deschampsia cespitosa S. C. Morey 1983-7-21 497 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  CHSC44247  Deschampsia danthonioides V. Oswald; L. Ahart 1988-7-13 3577 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  CHSC44453  Deschampsia danthonioides Lowell Ahart 1988-5-30 6024 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC24137  Dicentra formosa D. E. Hale 1976-4-20 13 Butte On n margin of Paradise Reservoir. Slope above Reservoir. 609 Comment
  RSA4206  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  CHSC3856  Dichelostemma capitatum subsp. capitatum L. E. Dunkel 1965-3-14 6 Butte Ca. 50 yards w of Chico Rod and Gun Club building in Upper Bidwell Park. 35 Comment
  CHSC96620  Dichelostemma capitatum subsp. capitatum L. P. Janeway; B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC9703  Dichelostemma capitatum subsp. capitatum Nancy Mosman 1971-7-3 64 Butte Along n side of Humboldt Road, ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  SEINET10833771  Dichelostemma congestum A. Arthur Heller 1902-5-8 Heller s.n. 1902 Butte Berry Canon (near Clear Creek) Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CHSC56815  Dichelostemma multiflorum Robert A. Schlising 1963-6-7 2618 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  SEINET3885608  Dichelostemma multiflorum R. A. Vanbianchi 1974-4-20 215 Butte 300 yards south of the intersection of Pentz and Clark Rds.; 0 Comment
  CAS-BOT-BC502523  Dichelostemma volubile R. F. Hoover 1936-5-21 1171 Butte Cana Comment
  CHSC31657  Dichondra donelliana L. Ahart 1975-5-3 747 Butte Near North Honcut Creek. On Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10560063  Digitaria sanguinalis A. Arthur Heller 1914-6-2 Heller 11476 Butte Hills 8 miles north of Oroville. Comment
  CDA34289  Diospyros lotus L. Ahart 2010-6-12 16804 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
  CHSC103934  Diplacus angustatus Lowell Ahart 2010-5-16 16693 Butte Bottom of a small drainage, just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CAS-BOT-BC150498  Diplacus grandiflorus Lowell Ahart 1983-7-29 4230 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC3345  Diplacus grandiflorus Robert L. Smith 1966-5-17 5 Butte Honey Run Rd. 2 miles W of Paradise. Comment
  CHSC38690  Diplacus grandiflorus Vernon Oswald 1983-5-23 545 Butte Upper Bidwell Park, Chico, near Chico Creek at the east end of Yahi Trail. On flood plain of creek. 207 Comment
  CHSC76971  Diplacus grandiflorus Margie Collins 1894-5-1 Butte Centerville. Comment
  CAS-BOT-BC153211  Diplacus kelloggii Rimo Bacigalupi 1962-6-16 s.n. Butte Nelson Bar 213 Comment
  CAS-BOT-BC154040  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC44751  Diplacus torreyi R, Banchero 1980-6-13 224 Butte Little Bald Rock, ca 1.0 mi E of Bald rock Rd. 1036 Comment
  CHSC44770  Diplacus torreyi R. Banchero 1980-6-17 249 Butte Paradise Lake, 1.1 mi W of the jct of Loucretia and Coutolenc Rds. 762 Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CHSC44815  Diplacus torreyi R. Banchero 1980-6-12 209 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  CHSC94918  Distylium racemosum L. P. Janeway 2006-8-9 8875 Butte Sacramento Valley. On the campus of California State University Chico; 35 m north of Big Chico Creek, 18 m east of the pedestrian path across the creek to the middle of Holt Hall; part of the Camelia Garden. 60 Comment
  CHSC108044  Dittrichia graveolens L. P. Janeway 2011-10-21 10773 Butte Sacramento Valley. East edge of Hwy 99 at north corner of Durham-Pentz Road overpass fill slope. 52 Comment
  CHSC113969  Dittrichia graveolens Lowell Ahart 2014-11-24 19919 Butte About 20 feet below the high water line of Lake Oroville, about 800 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 252 Comment
  SEINET10449640  Dodecatheon hendersonii Mary Susan Taylor 1975-3-10 Taylor 414 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
  CHSC58896  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte Growing 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
  UCD55002  Downingia bicornuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N of Gridley. 30 Comment
  UC131824  Downingia bicornuta var. bicornuta Dr. E. B. Copeland 1903-5-15 3176 Butte Chico Comment
  CDA42333  Downingia bicornuta var. picta T. C. Fuller 1962-5-17 8713 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  CHSC47396  Downingia cuspidata Lowell Ahart 1978-5-2 1701 Butte Growing in shallow water in a vernal pool, near the large parking area on top of Table Mountain, about 7 miles north of Oroville. 426 Comment
  CDA42327  Downingia insignis Vernon H. Oswald & Lowell Ahart 1998-6-11 9217 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  UC2048627  Downingia insignis Lisa Schultheis 1995-6-9 212 -95 Butte North of Sutter Buttes. Gray Lodge Wildlife Refuge, west side of Pennington Road, 0.3 mile north of Sutter/Butte County Line. Comment
  UCD115560  Draba verna R. N. Bowman 1977-3-30 1352 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  CHSC35006  Draba verna var. aestivalis R. E. Preston 1982-2-25 178 Butte 20 ft s of Humboldt Rd, ca. 1/4 mi e of its jct with Bruce Rd; ca. 3 mi e of downtown Chico. 87 Comment
  CAS-BOT-BC401554  Drosera rotundifolia M. S. Taylor; L. Ahart 1981-8-16 4202 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City 1828 Comment
  JEPS110326  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 1569 Comment
  UCD123988  Drosera rotundifolia Barry Rice 2011-7-20 BR 110708 Butte Mallory Meadow. 1350 Comment
  RSA0011688  Drosera rotundifolia H. F. Copeland 594 Butte Jonesville. 1524 Comment
  SEINET11994763  Drosera rotundifolia L. Ahart, Ahart, P. 1984-1 4756 Butte About 1/2 mile E of Bald Mountain, about 5 mi NE of Stirling City 1750 Comment
  CHSC109669  Drymocallis glandulosa var. glandulosa Lowell Ahart 2012-6-28 18241 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  JEPS124019  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC101827  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC113583  Dryopteris arguta Lowell Ahart 2014-8-24 19721 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  POM120873  Dryopteris arguta C. C. Bruce 1897-05 s.n. Butte Butte Creek. Comment
  CAS-BOT-BC109477  Dudleya John Thomas Howell 1962-6-16 37597 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC31794  Dudleya cymosa L. Ahart 1976-4-7 1038 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36509  Dysphania ambrosioides L. Ahart 1981-9-26 3206 Butte On a sand bar near the Sacramento River. 40 Comment
  CHSC116127  Dysphania botrys Lowell Ahart 2015-11-7 20617 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC62446  Dysphania botrys L. P. Janeway 1993-9-7 4588 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC40611  Dysphania pumilio Lowell Ahart 1985-10-12 5203 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reserovir, about 3 miles south of Paradise. 301 Comment
  JEPS114772  Echinochloa colona Lowell Ahart 2008-7-23 15148 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CAS-BOT-BC197105  Echinochloa crus-galli Lowell Ahart 1981-9-19 3180 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  JEPS120038  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  JEPS124347  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UC1100267  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12741 Butte nw of Pennington Gray Lodge Game Refuge Comment
  CAS-BOT-BC208572  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CDA2001  Echinochloa oryzoides E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 853 Butte Biggs UC Field Station: north of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 miles E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. Comment
  RSA733899  Echinochloa oryzoides Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 853 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  JEPS98266  Echinodorus berteroi Lowell Ahart 2000-8-28 8666 Butte 6 air miles SW of Oroville (Oroville Wildlife Area, about 1/2 mi W of Oak Grove and Hwy 70, NW edge of large man made lake) 42 Comment
  CDA4582  Eclipta prostrata L. Ahart 1999-9-21 8268 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
  HSC104030  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte About 1 mi. NW of Biggs, ~ 500 yds. W of Riceton Highway, on the south side of Biggs Princeton Rd. 27 Comment
  CAS-BOT-BC291136  Eclipta prostrata Lowell Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS120900  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards N of Lower Honcut Road, about 1.75 miles W of Honcut. Comment
  JEPS124225  Elatine californica Lowell Ahart 2015-3-31 19984 Butte About 1/8 mile south of Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. Comment
  JEPS87389  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC78180  Eleocharis acicularis Lowell Ahart 2000-5-27 8407 Butte Boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west end of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS123876  Eleocharis acicularis Lowell Ahart 2015-4-24 20062 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS98305  Eleocharis acicularis Lowell Ahart 2000-10-2 8699 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
  CHSC104846  Eleocharis acicularis var. acicularis Lowell Ahart 2010-6-9 16776 Butte 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CAS-BOT-BC113638  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC113462  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  JEPS110397  Eleocharis bolanderi Lowell Ahart 2006-8-15 13181 Butte Bog, near the center of a large open meadow with bogs, about 70 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-BC113583  Eleocharis decumbens Lowell Ahart 1980-7-4 2459 Butte Along Forbestown Road 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
  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
  JEPS98441  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC68429  Eleocharis macrostachya L. P. Janeway 1986-9-20 1883 Butte Inside the bend at the junction of Chico-Butte City Hwy and Road 48. 28 Comment
  CHSC78291  Eleocharis macrostachya Lowell Ahart 2000-6-21 8498 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  JEPS94769  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte about 7 air mi n of Oroville (about 1/2 mi n of the ione oak tree, about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC112789  Eleocharis macrostachya Lowell Ahart 1983-6-26 4144 Butte Along Ponderosa Way. 550 Comment
  SEINET10466798  Eleocharis macrostachya Mary Susan Taylor 1978-9-8 Taylor 1878 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC78300  Eleocharis montevidensis Lowell Ahart 2000-6-21 8497 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  UCD38754  Eleocharis obtusa Beecher Crampton 1957-9-17 4630 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  CHSC45142  Eleocharis pachycarpa Lowell Ahart 1969-7-12 29 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC45143  Eleocharis pachycarpa Lowell Ahart 1975-6-19 793 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA718781  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow 1082 Comment
  SEINET13710285  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8597 Butte Oroville Wildlife Area, 4 Mi. SW of Oroville (T18N, R3E, Dec 3, NE 1/4) 140 Ft. 43 Comment
  RSA754815  Eleocharis palustris L. Ahart 2009-6-30 15979 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  CHSC72402  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9676 Butte Pond on east side of Larkin Rd. just south of the boundary of the Oroville WA at the clay pits, ca. 1 mi south of the Oroville Municipal Airport. Along the receding north shore of the pond. 41 Comment
  UC1586534  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte 2 mi E of Honcut (Joie Osgood Ranch) 45 Comment
  CDA38988  Eleocharis quinqueflora L. Ahart 2000-5-1 8333 Butte On the north margin of a large wash, just west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET7587010 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC78567  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC78315  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4419  Elymus caput-medusae 1966-5-9 Butte Alligator Hole, Upper Bidwell Park, Chico. Comment
  CAS-BOT-BC227299  Elymus elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC99759  Elymus elymoides subsp. californicus Lowell Ahart 2008-6-13 14822 Butte 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
  JEPS114982  Elymus elymoides subsp. californicus Lowell Ahart 2008-6-13 14822 Butte 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
  CHSC44920  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-31 6165 Butte South of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  CAS-BOT-BC234103  Elymus multisetus Lowell Ahart 1977-5-20 1508 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC45041  Elymus trachycaulus subsp. subsecundus Lowell Ahart 1987-9-24 5902 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
  SEINET10453209  Epilobium adenocaulon var. parishii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4212 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC62472  Epilobium brachycarpum L. P. Janeway 1993-9-7 4585 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 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
  UCD105378  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  SEINET10453197  Epilobium brevistylum Lowell Ahart 1983-8-16 Ahart 4296 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC43426  Epilobium campestre Lowell Ahart 1977-7-10 1463 Butte On the bottom of a slough, about 1/10 mile north of Middle Honcut Road, about 1 mile north-west of Honcut. 30 Comment
  UC873160  Epilobium campestre Lewis S. Rose 1937-6-11 37382 Butte 7 mi w Honcut 22 Comment
  CHSC94658  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
  UC600555  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  CHSC115317  Epilobium minutum Lowell Ahart 2015-4-18 20052 Butte On the north side of the road to the Forbestown Reservoir, about 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 669 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
  CHSC48632  Epilobium minutum Vernon Oswald 1987-6-2 2943 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  CHSC48633  Epilobium minutum Vernon Oswald 1987-4-20 2333 Butte Butte Creek Preserve on the s side of the creek ne of the Skyway. 85 Comment
  SEINET10939941  Epilobium paniculatum Mary Susan Taylor 1977-8-19 Taylor 1504 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  CDA42893  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC725503  Epilobium torreyi A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  CAS-BOT-BC57996  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  OBI69193  Equisetum hyemale Kari Fisher 2000-11-10 44 Butte Upper Bidwell Park, east of footbridge of golf course, along Chico Creek. 79 Comment
  JEPS110236  Equisetum hyemale subsp. affine Lowell Ahart 2006-9-13 13323 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  SD10030  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 Butte Jonesville Comment
  POM193393  Equisetum laevigatum E. B. Copeland 1930-6-24 403 Butte Jonesville. 1500 Comment
  SEINET10507426  Eragrostis curvula Lowell Ahart 1984-5-19 Ahart 4608 Butte Along edge of Hwy 70, ca. 1 mi S of the jct of Cherokee Road and Hwy 70, ca. 12.5 mi N of Oroville; Foothill Woodland; 300 m. 300 Comment
  CHSC112336  Eragrostis hypnoides Lowell Ahart 2013-7-9 18828 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
  CAS-BOT-BC284080  Eragrostis pectinacea var. pectinacea Lowell Ahart 1977-7-10 1493 Butte 3 miles northeast of Honcut 50 Comment
  CHSC51038  Eragrostis pectinacea var. pectinacea Lowell Ahart 1990-7-15 6558 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC83002  Eragrostis pilosa var. pilosa Lowell Ahart 2002-9-7 9927 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  JEPS103327  Eragrostis pilosa var. pilosa Lowell Ahart 2002-9-7 9927 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CAS-BOT-BC174178  Eremogone cliftonii M. S. Taylor 1981-5-21 3793 Butte N side of Mayaro Rd, ca. 0.5 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70 609 Comment
  CHSC43241  Erigeron bonariensis Lowell Ahart 1987-9-24 5897 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  SEINET10474621  Erigeron foliosus var. hartwegii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4211 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC48151  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 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. On the edge of a streamley draining the largest lake into Butte Creek. 1935 Comment
  CHSC88077  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on canyon edge of Humboldt Trail n. of Bloody Pin Trail junction. UTM: 10609319E 4405116N. 411 Comment
  CHSC72437  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft southwest of the Gap. 1280 Comment
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  CHSC20971  Erigeron sumatrensis M. S. Taylor 1975-9-8 903 Butte Along Big Chico Creek, California State University, Chico, campus. 60 Comment
  CHSC110034  Eriobotrya Lowell Ahart; Josephine Guardino, 2012-10-12 18481 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. 62 Comment
  CDA32128  Eriochloa acuminata var. acuminata L. Ahart 2004-8-3 11397 Butte On the south side of O Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. Comment
  SEINET5330462  Eriogonum luteolum J. T. Howell 1959-9-20 34615 Butte along Feather River near Oroville 46 Comment
  SEINET5043171  Eriogonum marifolium Unknown 1930-7-12 410 Butte Above Jonesville Comment
  SEINET4854949  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville. 2000 Comment
  JEPS117630  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CHSC31217  Eriogonum nudum var. pubiflorum M. S. Taylor 1980-10-6 3357 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC32140  Eriogonum nudum var. pubiflorum L. Ahart 1977-10-19 1605 Butte Peter Ahart Ranch, Honcut. On dry gravelly soil in open pasture fields, it can also be found on small gravel bars along small washes and on dredger piles along North Honcut Creek. 50 Comment
  LA206890  Eriogonum nudum var. pubiflorum E. B. Copeland; 1930-7-16 sn Butte Jonesville 1500.0 Comment
  CHSC31772  Eriogonum roseum Lowell Ahart 1974-9-30 639 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45488  Eriogonum roseum Lowell Ahart 1974-9-30 640 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  POM219384  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Jonesville. In very dry ground in Colby Canyon. 1524 Comment
  CHSC50840  Eriogonum umbellatum var. nevadense Vernon Oswald; Lowell Ahart 1990-7-19 4373 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of the Plumas County line. 1950 Comment
  UCD101499  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte at Pulga Bridge, North Fork Feather River. 417 Comment
  SBBG28265  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville Comment
  RSA0056354  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Highway 70. 548 Comment
  CHSC73976  Eriogonum ursinum var. ursinum B. Castro; L. Gehrung 1998-7-2 801 Butte Ca y air mi NW of Brush Creek, ca 0.5 mi E of Hungry Hunt Peak, ca 200 ft W of USFS Rd 23N28. 1091 Comment
  JEPS115266  Eriogonum vimineum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC301307  Eriophyllum lanatum var. croceum C. R. Quick 1941-6-7 41 -36 Butte Big Bar Mt. Comment
  CAS-BOT-BC308170  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  CHSC329  Eriophyllum lanatum var. grandiflorum M. Roberson 1956-5-21 Butte Near Paradise along Skyway. 548 Comment
  CHSC56751  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1980-4-21 Butte Junction of Pentz-Magalia Hwy and Pentz Road. Comment
  POM66852  Eriophyllum lanatum var. grandiflorum C. C. Bruce 1897-06 1989 Butte Little Chico Comment
  RSA177045  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  CHSC111367  Erodium brachycarpum Lowell Ahart 2012-5-10 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SEINET10870231  Erodium brachycarpum Mary Susan Taylor 1980-3-1 Taylor 2331 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CHSC38452  Erodium cicutarium Vernon Oswald 1983-3-13 153 Butte Upper Bidwell Park, Chico, in Parking Area P (2.0 mi e of the power lines). 207 Comment
  UCD80353  Erodium moschatum CNPS SN Foothill Team 2005-4-6 SNFN 0099 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville, approximately 1 mile NW of parking area, 123 degrees east of south fork of Coal Canyon. 383 Comment
  JEPS15843  Eryngium articulatum W. L. Jepson 1934-5-4 16610 Butte 1 1/2 mi. s. Nord (swales of Pine Creek near Sacramento R., this particular swale is Kusal Slough, n.e. end of it, e. of Gianelli Bridge); Pine Creek Comment
  UC1122957  Eryngium castrense F. W. Embree 1934-4-24 42 Butte 4 1/2 mi. n. & 1 1/2 mi. e. Biggs (Plot <A or G>); Marysville Quad. Comment
  CAS-BOT-BC40748  Erysimum capitatum H. F. Copeland 1931-6-10 1527 Butte Woods between Willow and Colby Creeks. Comment
  UC397036  Erysimum capitatum E. Copeland 1929-7-1 Butte Jonesville Comment
  CAS-BOT-BC151492  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, Ca 2.5 mi e of the jct of Zink Rd and Bald Rock Rd. 975 Comment
  CHSC40884  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC44800  Erythranthe glaucescens R. Banchero 1980-6-12 211 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  CHSC78169  Erythranthe glaucescens Lowell Ahart 2000-5-31 8428 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC82612  Erythranthe glaucescens Tara Morgan 2002-4-23 34 Butte Found along the walking down the south rim trail located on the east side of Big Chico Creek. Located down from the green gate and left at the split in the trail to a seep area. 389 Comment
  CHSC11898  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  CAS-BOT-BC151463  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  CHSC90170  Erythranthe microphylla Jose Romero 1983-4-20 2 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  SEINET8354987  Erythranthe moniliformis A. A. Heller 1914-6-22 11511 Butte Chico meadows. 1219 Comment
  CHSC1790  Erythranthe nasuta L. Oliver; D. Sloan 1939-3-27 Butte Rifle Range, Chico Creek. 91 Comment
  CHSC44687  Erythranthe nasuta R. Banchero 1980-4-13 108 Butte Doe Mill Ridge, ca 2.0 mi SW of the Covered Bridge. 213 Comment
  CHSC23653  Erythronium multiscapideum M. S. Taylor 1976-4-20 1077 Butte Ca. 100 m n of junc of the Skyway and Coutolenc Rd, Magalia. 609 Comment
  CHSC55459  Erythronium multiscapideum Charlie Crannell 1991-4-13 17 Butte Along Doe Mill Road 1000 ft s of Royal Drift Mine access road. 707 Comment
  UC1485465  Erythronium multiscapideum M. S. Taylor 1981-4-8 3504 Butte serpentine ridge on n side logging landing site (just w of power lines off logging rd ca 1/2 mi w of its jct with Ponderosa Way (rd to Flea Valley), ca 5 mi n of its jct with Hwy 70); Pulga SW Quad 883 Comment
  CAS-BOT-BC504528  Erythronium multiscapideum Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CAS-BOT-BC504535  Erythronium multiscapideum John Thomas Howell; Gordon H. True 1969-4-9 45492 Butte Magalia 701 Comment
  CAS-BOT-BC504536  Erythronium multiscapideum John Thomas Howell 1962-6-15 37497 Butte Magalia 731 Comment
  JEPS119618  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte About 5 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC402964  Eschscholzia californica Mrs. C. C. Bruce 1893-3-1 2020 Butte Unspecified Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  CHSC74086  Euphorbia crenulata B. Castro; E. Hubert 1996-7-18 682 A Butte Ca 4.5 air mi NW of town of Brush Creek, ca 1.5 air mi W of French Creek, on N side of USFS Rd 22N31. In clearcut area on either side of tributary to Bush Creek. 853 Comment
  SEINET10453755  Euphorbia crenulata Mary Susan Taylor 1980-5-8 Taylor 2615 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC10617  Euphorbia peplus Lowell Ahart 1968-2-22 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC21006  Euphorbia peplus M. S. Taylor 1975-4-6 433 Butte On ne corner of Arcadian and W. 4th Ave, Chico. 60 Comment
  JEPS119577  Euphorbia peplus Lowell Ahart 2012-4-17 17877 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CHSC43189  Eurybia integrifolia Robert Banchero 1981-8-4 642 Butte Ca 1.7 mi N of jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  UC600725  Eurybia integrifolia H. F. Copeland 1932-8-21 Butte near, Jonesville Kennedy's cabin 487 Comment
  CAS-BOT-BC312196  Eurybia radulina Mary E. Wall 1940-7-18 s.n. Butte Pardise Comment
  SEINET8687814 Image available Eurybia radulina K. Conger 1907-1 151 Butte Brush creek Comment
  JEPS113325  Euthamia occidentalis L. P. Janeway 2006-10-4 8902 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  RSA755369  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte On the south edge of a deep large ditch on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 air miles southwest of Gridley. 20 Comment
  CHSC74041  Festuca arundinacea B. Castro; Linnea Hanson 1996-5-24 666 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on the W side of sharp curve in USFS Rd 23N00. 1216 Comment
  CHSC112787  Festuca bromoides Lowell Ahart 2013-5-18 18700 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
  CHSC109547  Festuca microstachys L. P. Janeway 2012-6-7 10865 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CDA13878  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-7 13736 Butte Sierra Nevada; Bottom of Little Butte Creek canyon above Magalia Reservioir, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC76331  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 770 Comment
  CHSC2149  Festuca rubra H. Silberman; D. Isaac 1949-5-17 Butte Chico. 57 Comment
  SEINET10559487  Festuca subulata Lowell Ahart 1981-9-15 Ahart 3159 Butte On moist soil on the sides of Pinkard Creek, ca. 0.5 mi N of the Lost Creek Reservoir. County Record. 1100 Comment
  UCD111860  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Sierra Nevada. 5.5 miles below West Branch Bridge, Feather River Highway. Comment
  SEINET223406  Filago gallica B. Ertter, J Strachan 1980-5-5 3265 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  CHSC65888  Filago pyramidata var. pyramidata Vernon H. Oswald 1996-4-20 7404 Butte Sacramento Valley. Sacramento River National Wildllife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  RSA325094  Fragaria vesca subsp. californica M. S. Taylor 1981-4-28 3571 Butte Along Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  LA207663  Frangula californica subsp. tomentella A. A. Heller; 1915-5-16 11869 Butte Chico-Centerville rd 3 mi. from Chico Comment
  UCD112793  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Canyon. Pulga. 487 Comment
  CHSC33517  Frangula purshiana R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4142 Butte E of N fork Feather River at Coyote Gap region; on Four Trees Road. Comment
  CHSC34188  Frangula purshiana L. Ahart 1981-9-15 3175 Butte Along edge of road on w side of Sly Creek Reservoir, ca. 1/2 mi n of Sly Creek Dam. 1150 Comment
  CAS-BOT-BC55728  Frangula rubra subsp. rubra E. B. Copeland 1931-7-28 657 Butte west of North Willow Creek 1650 Comment
  CHSC110033  Fraxinus Lowell Ahart; Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET10469561  Fritillaria atropurpurea Mary Susan Taylor 1978-1 Butte Comment
  CAS-BOT-BC130315  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Along Milsap Bar Road, Plumas National Forest Comment
  CAS-BOT-BC130316  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Near Magalia Comment
  CHSC2279  Fritillaria eastwoodiae R. Carter 1964-3-23 68 Butte 1/4 mi. down Truex Rd. off Hwy. 40 A on S side of road. 152 Comment
  SEINET8478820  Fritillaria eastwoodiae M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CHSC87418  Fritillaria recurva R. D. Fischer 2004-3-11 108 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected off cut bank near northern end of Humboldt Trail. 435 Comment
  SEINET10469525  Fritillaria recurva Mary Susan Taylor 1980-5-8 Taylor 2607 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC1613  Galium aparine E. Crouch 1929-4-18 Butte Bidwell Park. 76 Comment
  CHSC70997  Galium aparine Vernon Oswald 1998-5-6 8988 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 between Chico and Forest Ranch opposite Santos Rd. and South Rim Trail. 441 Comment
  SEINET10902545  Galium bifolium Mary Susan Taylor 1978-7-19 Taylor 1763 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC109850  Galium bolanderi L. P. Janeway 2012-6-23 10886 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC34219  Galium bolanderi M. S. Taylor 1981-5-29 3815 Butte Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. 853 Comment
  SBBG7301  Galium bolanderi H. and M. Dearing 1938-6-21 2056 Butte 21 mi NE of Chico Comment
  UC397359  Galium bolanderi Mrs. R. M. Austin May 1886 671 Butte Little Chico Canyon Comment
  CDA34715  Galium murale L. Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area, in Lower Bidwell Park, Chico. Comment
  SEINET12515235  Galium parisiense Lowell Ahart, John Dittes and Josephine Guardino 2002-6-21 9748 Butte South side of a poor dirt road, Watson Ridge, about 2 (air) miles northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1095 Comment
  UCD111114  Galium porrigens Christopher Mallek 2008-1 HW2- 22 Butte Magalia. 756 Comment
  CHSC36162  Galium porrigens var. tenue Linyi Maslin 1981-3-25 6 Butte Bank SE of Butte Creek Canyon off Skyway between Chico and Paradise. 242 Comment
  CHSC33951  Galium triflorum M. S. Taylor; L. Ahart 1981-8-15 4194 Butte N side of Coon Hollow Rd, along creek, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 1676 Comment
  CHSC64219  Galium triflorum S. C. Morey 1983-7-23 584 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC39346  Gamochaeta argyrinea Lowell Ahart 1983-6-26 4152 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. The sign gives Big Bridge Road instead of Ponderosa Way. 575 Comment
  CHSC31917  Garrya fremontii M. S. Taylor; E. Pierce 1981-1-29 3375 Butte Both sides of Cohasset Hwy., ca. 3 mi s of Cohasset. Comment
  CHSC69045  Garrya fremontii Lowell Ahart 1997-8-1 7759 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. 1432 Comment
  SBBG29803  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  SEINET10935022  Gastridium phleoides Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4063 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC33760  Gentiana newberryi var. tiogana R. A. Schlising 1981-7-19 4157 Butte E of Stirling City, E of Bald Mountain, and in southern portion of Crane Valley. 1584 Comment
  CHSC113502  Gentianopsis simplex Lowell Ahart 2014-7-16 19688 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC109001  Geranium carolinianum Lowell Ahart 2012-4-30 17945 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CDA5617  Geranium dissectum L. Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. Comment
  CHSC52025  Geranium dissectum Mark Loy 1980-4-8 16 Butte Ca. 5 mi N of Oroville, 7.2 mi N of Table Mt. Rd, ca. 100 yards W of Cherokee Rd. 365 Comment
  CHSC66162  Geranium dissectum Vernon H. Oswald; Lowell Ahart 1996-5-27 761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Locally abundant on the edge of a marshy area on the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC7103  Geranium molle K. Cox 1969-4-4 15 Butte Bidwell Park. 4.2 mi E. of entrance to upper park. 60 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
  RSA29020  Gilia capitata Lincoln Constance 1941-5-28 2827 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 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
  SD122562  Gilia capitata subsp. pedemontana Lowell Ahart 1984-6-8 4671 Butte At the Ponderosa Dam, ca. 2.0 miles northwest of Forbestown. 370 Comment
  CHSC90052  Gilia tricolor Peggy Fain 1991-4-21 20 Butte Ca. 2 km. E. of Richardson Springs Hotel, Musty Buck Preserve. 213 Comment
  CHSC1255  Gilia tricolor subsp. tricolor Eleanor Stilson 1897-6-1 Butte Comment
  SEINET10460573  Githopsis pulchella subsp. campestris Roberson 1956-4-9 ROBERSON s.n. Butte Near Paradise along Skyway 549 Comment
  SEINET10460574  Githopsis pulchella subsp. campestris Robert A. Schlising 1964-6-11 Schlising 2723 Butte Few miles south of Paradise along Honeyrun Road Comment
  SEINET10464591  Githopsis specularioides Watts 1974-4-30 Watts 29 Butte About 15 miles northeast of Chico on Cohasset road Comment
  UC1563258  Glinus lotoides unknown 1990-10-5 6631 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
  CHSC110134  Glyceria declinata L. P. Janeway; B. Castro 2012-4-15 10805 Butte Northern Sierra Nevada Foothills. North Table Mountain; along the main drainage to the Fern Falls branch of Coal Canyon about 0.6 creek km east of the Falls. 381 Comment
  CHSC55463  Glyceria declinata L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. In vernal pool. 38 Comment
  CHSC64257  Glyceria elata S. C. Morey 1983-7-23 582 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1609366  Glyceria elata Lowell Ahart 1993-7-1 7050 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CHSC116285  Gnaphalium palustre Lowell Ahart 2015-10-26 20601 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC29291  Gnaphalium palustre R. A. Schlising 1980-5-26 3602 Butte Several mi sw village of Cohasset, e of Cohasset Road. 472 Comment
  CHSC41871  Gnaphalium palustre Lowell Ahart 1986-11-9 5450 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
  CHSC75960  Gnaphalium palustre Lowell Ahart; Vernon H. Oswald 1999-8-13 8166 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
  CHSC97727  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS127007  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  RSA0116101  Gnaphalium palustre Lowell A. Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 miles (air) west of Philbrook Resrvoir. 1665 Comment
  RSA724997  Gnaphalium palustre L. Ahart 2006-9-11 13277 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
  UC478463  Gnaphalium palustre E. B. Copeland 1931-7-18 694 Butte in places along Butte Creek; Jonesville Comment
  SEINET10474674  Gnaphalium palustre Mary Susan Taylor 1979-10-2 Taylor 2211 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  SEINET10839605  Goodyera oblongifolia Mary Susan Taylor 1978-9-9 Taylor 1920 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC112719  Gratiola ebracteata Lowell Ahart 2013-10-26 19220 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  JEPS98418  Gratiola ebracteata Lowell Ahart 2000-6-6 8450 Butte 5 mi (air) E of Oroville Dam (sides of an old gold mining pit, SE of where the dirt road crosses Oregon Gulch Creek, 1/4 mi NE of cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC108794  Hedera helix Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC109083  Hedera helix Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12 , Lower Bidwell Park, Chico. 65 Comment
  CHSC46332  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC306539  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC305346  Helianthus annuus Lowell Ahart 1980-8-16 2583 Butte Near Honcut 60 Comment
  CHSC36557  Helianthus annuus L. Ahart 1982-7-10 3663 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC305345  Helianthus annuus Lowell Ahart 1982-7-10 3663 Butte In the parking area around the Gray Lodge check in station, about 12 miles south-west of Gridley 35 Comment
  CHSC117400  Heliotropium europaeum Lowell Ahart 2016-5-30 20888 Butte On the bottom of a deep wash (west of where we removed gravel), 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
  CHSC34786  Heliotropium europaeum L. Ahart 1981-9-26 3199 Butte On a gravel bar along the Sacramento River, ca. 6 mi w of Chico. 40 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
  RSA722688  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC45698  Helminthotheca echioides Vernon Oswald 1983-6-28 783 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Along the edge of ponds in the refuge. Comment
  CHSC33891  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte 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. 2 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CHSC44375  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  UCD132993  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte ca. 50 feet east of Hwy 99 ca. 4 miles north of East Biggs Road; at a pumping station just west of the Thermalito Afterbay levee. 32 Comment
  SEINET9340684  Hemizonia fitchii Unknown 1937-7-11 37380 Butte 7 mi W of Honcut Open field Comment
  RSA4484  Heracleum maximum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  CHSC45571  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1978-6-17 1778 Butte Along roadways, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC31619  Hesperevax acaulis var. acaulis L. Ahart 1974-4-24 429 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90476  Hesperevax acaulis var. robustior Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11673 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
  CAS-BOT-BC310189  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. Near North Honcut Creek 100 Comment
  SJSU12029  Hesperocyparis macnabiana J. F. Scott 1980-10-13 60 Butte on both sides of Paradise Road c. 2 mi N of Paradise, between Paradise & Megalia Reservoir Dam 685 Comment
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  UC1111608  Hesperolinon micranthum Lewis S. Rose 1955-6-15 55100 Butte 6 mi se Paradise (on Pentz Road) 426 Comment
  UCD19365  Heteranthera limosa E. Dean; with J. Ditomaso and E. Healy 2001-8-20 856 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  UCD139991  Heteranthera limosa Lowell Ahart 1974-4-29 618 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1925781  Heteranthera rotundifolia unknown 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC42894  Heterocodon rariflorum L. P. Janeway 1987-6-13 2204 Butte Along Dogwood Cr, along rd to Mayaro 2.4 mi E of Concow Rd. 990 Comment
  SEINET10460747  Heterocodon rariflorum Mary Susan Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  CHSC1551  Heteromeles arbutifolia R. M. Staley 1952-7-4 Butte Paradise. 548 Comment
  CHSC40325  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  SD8501  Heteromeles arbutifolia R. M. Austin 1883-1 Butte Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  CHSC110454  Heuchera micrantha var. erubescens L. P. Janeway 2013-5-19 11109 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +/- overlooking Cresta, along Camp Creek Road 1.7 road km northeast of Dixie Road. 670 Comment
  CHSC61013  Heuchera micrantha var. erubescens Lowell Ahart 1993-7-6 7057 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC66670  Hibiscus lasiocarpos var. occidentalis Vernon H. Oswald 1996-7-17 8067 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  CHSC25262  Hoita macrostachya M. S. Taylor 1977-6-27 1394 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  SEINET10451904  Hoita macrostachya Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4201 Butte T19N R6E nw sec 19. Ca. 0.5 mi sw of jct of Oroville-Forbestown Rd & Black Bart Rd, ca. 6 mi sw of Forbestown. Yellow Pine Forest; 750 m. 750 Comment
  CHSC34029  Hoita orbicularis L. Ahart 1981-7-7 2922 Butte In a small springy area ca. 1/2 mi w of the Oroville-Forbestown Rd on the Black Bart Rd, w of Forbestown. 700 Comment
  CHSC42401  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC149862  Holodiscus discolor Lowell Ahart 1981-7-7 2931 Butte Forbestown 750 Comment
  CHSC40330  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 487 Comment
  UCD85409  Hordeum brachyantherum subsp. brachyantherum Robert E. Preston 1982-7-21 345 Butte Ca. 1.1 miles W of Philbrook Res. Upper Montane Forest. 1676 Comment
  CHSC31962  Hordeum marinum subsp. gussoneanum J. D. Jokerst 1979-5-2 1221 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  SEINET11689119  Hordeum marinum subsp. gussoneanum L. Ahart, Taylor, M. S.; Jokerst, J. D. 1982-1 1537 Butte Grey Lodge Waterfowl Management Area, N side of Rutheford Rd, ca 100 m W of Pennington Rd Comment
  CHSC11098  Hordeum murinum subsp. glaucum Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  CHSC6133  Hordeum vulgare J. Wheeler 1968-4-17 309 Butte W side of railroad tracks about 1 mi e of Nord. 44 Comment
  CAS-BOT-BC143344  Horkelia Clarence R. Quick 1952-6-30 52 -104 Butte Big Bar Mt., east of Pulga Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  CAS-BOT-BC536585  Horkelia californica var. elata Lowell Ahart 1984-5-28 4647 Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  CAS-BOT-BC536586  Horkelia californica var. elata Forest Sheehan 1975-7-7 s.n. Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  CHSC46589  Horkelia fusca subsp. parviflora Vernon H. Oswald 1989-7-4 3837 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. At edge of meadow. 1767 Comment
  CHSC44164  Horkelia fusca subsp. tenella V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CAS-BOT-BC143979  Horkelia fusca var. tenella H. F. Copeland 1928-8-20 458 Butte Jonesville 1524 Comment
  CHSC36519  Horkelia tridentata L. Ahart 1982-5-8 3413 Butte On slope above the road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  CHSC99565  Horkelia tridentata subsp. tridentata L. P. Janeway 2008-5-26 9387 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CAS-BOT-BC536254  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC71638  Hosackia oblongifolia var. oblongifolia Vernon H. Oswald 1998-8-11 9465 Butte USFS 23N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  CHSC33906  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-7 3647 Butte S side of Fields Ridge Rd (20N24), 4.7 mi s of its jct with Lumpkin Ridge Road (20n24), 4.7 mi s of its jct with Lumpkin Rd, ca. 2 air mi se of Feather Falls. 1036 Comment
  JEPS98700  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC38469  Hypericum anagalloides Vernon Oswald 1983-8-19 1008 Butte Upper Bidwell Park, Chico, ca. 200 ft. n of Upper Park Rd. at Diversion Dam. 134 Comment
  CDA5084  Hypericum mutilum L. Ahart 2000-7-18 8602 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC401331  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CAS-BOT-BC312927  Hypochaeris glabra M. S. Taylor; L. Hanson; B. Smith 1981-5-29 3809 Butte Plumas NF/Oroville Rd. Chino Ridge 853 Comment
  CAS-BOT-BC312930  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC96883  Hypochaeris radicata Lowell Ahart 2007-6-12 14063 Butte East of high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  RSA500418  Idahoa scapigera Vernon H. Oswald 1989-3-1 3726 Butte S side of the East Branch of Mud Creek, E of Richardson Springs. At the falls. Comment
  POM220120  Ipomopsis aggregata subsp. formosissima H. F. Copeland 1928-8-14 451 Butte Ridge above Jones Creek, neighborhood of Jonesville 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
  CAS-BOT-BC133554  Iris hartwegii Mrs. H. C. Cantelow 1940-5-10 s.n. Butte About 2 mi. W. of Brush Creek Ranger Station Comment
  UCD138745  Iris hartwegii N. Kvasnik 1980-4-20 12 Butte Butte Creek Canyon, Covered Bridge. East side of creek, south of bridge. Comment
  CHSC3927  Iris macrosiphon Wayne O. Baum 1967-3-24 24 Butte Ca. 2 mi. e. of the Skyway and Humbug Rd. intersection, on the nw. side of Humbug Rd. 91 Comment
  CHSC90188  Iris macrosiphon Camela J. Ott 1989-4-11 7 Butte Ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  SDSU1943  Isoetes bolanderi E. B. Copeland 1929-6-29 Butte Above Jonseville. 533 Comment
  RSA261555  Isoetes howellii W. R. Powell 1970-3-26 1692 Butte Just off of La Porte Road, 1.8 miles NE of Bangor and ca 15 miles SE of Oroville. 343 Comment
  SBBG128804  Isoetes howellii L. Ahart 2013-5-22 18703 Butte ca. 0.5 mi SE of the Honcut Cemetery, ca. 3.25 mi NE of Honcut 54 Comment
  CHSC46323  Isoetes nuttallii Lowell Ahart 1989-5-23 6268 Butte In Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  UC1259505  Isoetes nuttallii Lowell Ahart 1979-4-6 Butte 3 mi. n.w. Bangor (w. side of N. Honcut Creek); N. Honcut Creek 110 Comment
  CAS-BOT-BC61869  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte in Valley Grassland, just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99 68 Comment
  SEINET10874661  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2438 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
  CHSC107576  Isolepis setacea Lowell Ahart 2011-8-19 17644 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
  CHSC29991  Jensia rammii L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS113867  Juncus brachyphyllus Lowell Ahart 2007-6-12 14077 Butte Along a small dry wash, about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC31840  Juncus bufonius var. bufonius Lowell Ahart 1973-5-24 223 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41987  Juncus bufonius var. bufonius Lowell Ahart 1986-11-14 5471 Butte 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
  CHSC54363  Juncus bufonius var. bufonius M. Bailey 1991-4-19 567 Butte Butte College campus. Within fenced area around Wallis Pond, along drainage to the w of the pond and e of Well #3. 85 Comment
  CHSC96541  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC116708  Juncus capitatus Lowell Ahart 2016-5-15 20833 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC35700  Juncus capitatus J. D. Jokerst 1982-5-1 1548 Butte Top of North Table Mt. SE of Cherokee Rd near the Mesa's edge ca 300 met SE of Rd. Comment
  CHSC37377  Juncus capitatus R. A. Schlising 1982-4-24 4228 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Themalito Afterbay. Comment
  CHSC47538  Juncus capitatus Lowell Ahart 1974-4-24 430 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  RSA755753  Juncus dubius L. Ahart 2009-8-23 16292 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  UC1562378  Juncus dubius Vernon Oswald and Lowell Ahart 1990-7-31 4419 Butte ca 4 mi n Concow (meadow at the headwaters of Concow Creek); Concow Creek 1097 Comment
  JEPS113871  Juncus effusus subsp. pacificus Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14280 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  SEINET10472478  Juncus effusus var. pacificus Mary Susan Taylor 1978-7-18 Taylor 1721 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC64053  Juncus ensifolius S. C. Morey 1993-8-4 705 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS113872  Juncus ensifolius Lowell Ahart 2007-7-15 14303 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  JEPS98315  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  UCD135933  Juncus exiguus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2010-8-5 16765 Butte along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road above Lost Creek Reservoir. 1149 Comment
  CHSC113944  Juncus howellii Lowell Ahart 2014-8-13 19705 Butte East edge of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10472445  Juncus howellii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4749 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 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
  CAS-BOT-BC110143  Juncus leiospermus var. leiospermus J. D. Jokerst 1984-4-6 1964 Butte Ca. 0.5 mile north of Kunkle Resv and several hundred meters southeast of Lago Vista where it turns from east to the north. Comment
  CHSC93497  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12585 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 395 Comment
  JEPS117320  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 385 Comment
  RSA712818  Juncus leiospermus var. leiospermus L. Ahart 2006-5-3 12558 Butte About 5/8 mile north of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles north of Oroville. 405 Comment
  CHSC46272  Juncus mexicanus Vernon Oswald 1989-5-1 3756 Butte Butte Sink Wildife Area (w portion of Schohr Ranch), sw corner of the intersection of the main ranch road and Little Dry Creek. 19 Comment
  CHSC113943  Juncus nevadensis var. nevadensis Lowell Ahart 2014-8-13 19709 Butte Near a small 'pond,' in the southwest part of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS117325  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC78342  Juncus orthophyllus Lowell Ahart 2000-7-11 8566 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of No-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
  CHSC31907  Juncus oxymeris L. Ahart 1977-7-19 1482 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC49625  Juncus parryi Vernon Oswald 1983-8-17 1004 Butte Pacific Crest Trail ca. 1000 ft e of Humboldt Summit. 2011 Comment
  RSA755380  Juncus patens L. Ahart 2009-7-9 16004 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  UCD168846  Juncus trilocularis Peter. F. Zika 2011-7-6 25540 Butte Northern Sierra Nevada Highlands (n SNH). Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill. 830 Comment
  CHSC38925  Juncus uncialis Vernon Oswald 1983-5-15 499 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure (500 ft e of the junction of Upper Park Rd. and Wildwood Ave. In vernal pond. 85 Comment
  RSA755034  Juncus usitatus L. Ahart 2009-6-18 15913 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  CHSC28873  Juniperus californica M. S. Taylor; J. Jokerst 1980-2-23 2321 Butte Ca. 50 ft nw of Neal Rd, ca. 2 mi e of Hwy 99, ca. 1 mi e of Neal Rd dump, ca. 7 mi s of Chico. 121 Comment
  UCD123760  Keckiella breviflora var. glabrisepala Joseph M. DiTomaso 1976-5-23 471 Butte Lake Oroville, peninsula at south end. 274 Comment
  CHSC1857  Keckiella corymbosa M. Underhill 1952-7-18 Butte Indian Marker for Richardson Springs. 243 Comment
  JEPS104292  Kickxia elatine Lowell Ahart 2003-6-25 10316 Butte In garden, Peter Ahart Ranch, ca 1 1/2 mi n and 1 mi e of Honcut, ca 12 mi south of Oroville. 33 Comment
  CHSC31959  Koeleria phleoides J. D. Jokerst 1979-5-2 1216 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  SEINET10494459  Koelreuteria paniculata Mary Susan Taylor 1975-6-22 Taylor 790 Butte California State University, Chico, campus. 61 Comment
  CHSC52820  Kumlienia hystricula R. E. Preston 1982-3-27 208 Butte N bank of McCabe Cr; ca. 1.7 mi s of Enterprise bridge over Lake Oroville, ca. 11 mi e of Oroville. 451 Comment
  CAS-BOT-BC340329  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  SEINET10474760  Lactuca scariola var. integrata Mary Susan Taylor 1977-8-16 Taylor 1452 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET10971245  Lactuca serriola Mary Susan Taylor 1979-11-11 Taylor 2283 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC32137  Lagophylla glandulosa L. Ahart 1972-10-4 143 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC341304  Lagophylla glandulosa David D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  POM361458  Lagophylla glandulosa M. Vincent 1962-9-13 286 Butte One mile W of Paradise on Honeyrun Road. Comment
  CHSC38370  Lagophylla ramosissima subsp. ramosissima Vernon Oswald 1983-5-27 564 Butte Upper Bidwell Park. Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  HSC102686  Lamarckia aurea J. P. Smith 2013-5-5 13700 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CHSC3997  Lasthenia californica J. W. Cherry 1967-3-26 Butte On either side of Bidwell Park road, .3 mi. e. of Salmon Hole. 170 Comment
  SEINET3450912  Lasthenia californica Unknown 2003-4-10 10052 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  JEPS119499  Lasthenia californica subsp. californica Lowell Ahart 2012-4-9 17834 Butte West of South Rim Trail, south part of Upper Bidwekk Park, about 2 1/4 miles (air) northeast of Chico. Comment
  SEINET10475346  Lasthenia chrysostoma Mary Susan Taylor 1975-4-26 Taylor 513 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  UC472213  Lasthenia fremontii Francis Ramaley 1917-5-6 11216 Butte near Chico Comment
  UCD80079  Lasthenia fremontii CNPS SN Foothill Team 2005-5-4 SNFN 0200 c Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  RSA585984  Lasthenia fremontii Adree M. Desrochers 1988-4-20 303 Butte Near Chico. Along Hwy 99, 2.5 km S of Meridian Rd. Comment
  JEPS107751  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  CHSC30374  Lasthenia gracilis J. D. Jokerst 1979-3-9 1142 Butte Top of North Table Mt., 20 M N of Cherokee Rd where it intersects the E edge of the section. Comment
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Jan 19 2011
  CAS-BOT-BC204903  Lathyrus Saichi Kawahara 1968-5-4 359 Butte Colusa-Hamilton City Road, 1 mile north of Princeton ferry, west bank of Sacramento River 30 Comment
  SEINET10871171  Lathyrus Mary Susan Taylor 1981-5-22 Taylor 3800 Butte T23N R5E sw/se sec 29, Pulga quad. Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, ca. 5 air mi E of Magalia. 3300 ft. 1006 Comment
  CHSC66159  Lathyrus angulatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7652 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In weeds between the hiking trail and the S end of Tract 2, Sanctuary II. 33 Comment
  POM17309  Lathyrus jepsonii subsp. californicus A. A. Heller, H. E. Brown, A. H. Heller 1902-5-8 8270 Butte Berry Canyon (near Clear Creek) Comment
  UCD106258  Lathyrus jepsonii var. californicus A. A. Heller 1914-5-1 11345 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CDA42904  Lathyrus latifolius L. Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. Comment
  SEINET10940068  Lathyrus nevadensis Mary Susan Taylor 1980-4-18 Taylor 2509 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  UC217238  Lathyrus nevadensis var. nevadensis H. M. Hall 1917-5-11 10293 Butte Keefer Mill, on Honey Run grade Keefer Ridge 731 Comment
  CAS-BOT-BC213288  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CAS-BOT-BC213291  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC31837  Lathyrus sulphureus L. Ahart 1977-4-16 1308 Butte Peter Ahart Ranch, Honcut. Along the banks and sides of North Honcut Creek. 50 Comment
  SEINET956196  Lathyrus sulphureus Lowell Ahart 1987-1 5621 Butte South of the Forbestown Ditch, about 2.5 miles north-east of Forbestown. 869 Comment
  CHSC2924  Layia fremontii W . Fitzwater 1958-3-15 Butte Shasta Hwy., Chico area. Comment
  CHSC3264  Layia fremontii M. L. Hellier 1966-3-21 17 Butte Along rd. side about 1/2 mile e. of Hwy. 99 E. on Pentz rd. Comment
  CHSC35631  Layia fremontii R. E. Preston 1982-3-27 212 Butte SE corner of int Larkin Rd and Oro Dam Blvd, Oroville. 51 Comment
  CHSC368  Layia fremontii P. Delaplane 1965-3-9 3 Butte Ca. 1/4 mi. S.W. of Chico Municipal Airport on Cohasset Rd. 50 yds. from E. side of road. 30 Comment
  CHSC6688  Layia fremontii Marilyn Lee 1968-3-15 120 Butte Along W. side of road leading to missle base, intersection on Kietter Road. Comment
  POM53359  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  SEINET10474772  Layia fremontii Mary Susan Taylor 1973-1 Taylor 1 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC380895  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CAS-BOT-BC274351  Leersia oryzoides John Thomas Howell 1959-9-20 34650 Butte Eastern outskirts of Oroville 60 Comment
  CHSC113135  Leersia oryzoides Lowell Ahart 2013-9-20 19056 Butte Along a ditch, about 100 yards west of the railroad, about 300 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  UCD63517  Leersia oryzoides L. E. Hazeltine 1916-7-12 Butte Chico. Comment
  CHSC102422  Lemna minuta Lowell Ahart 2009-7-9 16008 Butte On wet soil and in shallow water, along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10466002  Lemna minuta Mary Susan Taylor 1982-4-28 Taylor 4371 Butte T17N R1E se/sw sec 14. Pennington quad. Aquatic in slough, ca. 1/2 mi s of HQ on Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  SBBG28947  Lemna trisulca E. B. Copeland 1930-7-18 Butte Jonesville 1550 Comment
  JEPS117544  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-20 16815 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
  UC215491  Lepechinia calycina Helen M. Edwards Jun 1917 Butte De Sabla Comment
  CHSC42702  Lepidium campestre Lowell Ahart 1987-5-6 5514 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
  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
  CAS-BOT-BC89873  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CAS-BOT-BC12800  Lepidium perfoliatum Lowell Ahart 1981-4-6 2742 Butte A little west of the Gray Lodge Headuarters, ca. 8 miles southwest of Gridley. 35 Comment
  CAS-BOT-BC12846  Lepidium pinnatifidum Lowell Ahart 1981-7-26 3013 Butte Gray Lodge, southwest of Gridley. 35 Comment
  CHSC38810  Leptochloa fusca subsp. fusca Vernon Oswald 1983-8-2 945 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft e of the flood-control gates. Along the edge of the stream. 79 Comment
  CHSC54187  Leptosiphon bicolor Vernon H. Oswald; Lowell Ahart 1991-5-31 4634 Butte Dan Beebe Trail in the Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool, between Oroville Dam Blvd. East and Glen Pond. 91 Comment
  CHSC36821  Leptosiphon bolanderi M. S. Taylor 1981-5-21 3777 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC54307  Leptosiphon bolanderi Vernon H. Oswald; Lowell Ahart 1991-6-5 4644 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC45352  Leptosiphon ciliatus Vernon Oswald 1986-5-7 2001 Butte Upper Bidwell Park, Chico, on the north rim e of the power lines. 335 Comment
  CHSC96995  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1.0 air km west of Mountain House. 884 Comment
  POM219474  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. 1500 Comment
  CHSC38594  Leptosiphon parviflorus Vernon Oswald 1983-5-7 437 Butte Upper Bidwell Park, Chico, near the s-e corner of Horseshoe Lake. 102 Comment
  CHSC23685  Lessingia nana K. Stern 1969-1-1 Butte Growing in Upper Bidwell Park, Chico. Comment
  CHSC38375  Lessingia nana Vernon Oswald 1983-8-2 948 Butte Upper Bidwell Park, Chico, near Parking Area C, Horseshoe Lake. 100 Comment
  CHSC23377  Lessingia nemaclada Lowell Ahart 1975-9-4 977 Butte Along edge of Ponderosa Way two miles south-west of Feather Falls. 396 Comment
  JEPS120622  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  CAS-BOT-BC341782  Lessingia nemaclada Lowell Ahart 1986-11-8 5432 Butte About 1 1/2 miles north of French Creek, along Swayne Hill, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville 640 Comment
  SEINET10474781  Lessingia nemaclada Mary Susan Taylor 1978-9-9 Taylor 1918 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  UC1287454  Lessingia virgata Willard Spence 1962-7-24 731 Butte along alternate Rt. 40 4 mi s Oroville Comment
  RSA181930  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  CHSC45654  Leucanthemum vulgare Vernon Oswald 1987-6-12 2992 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CAS-BOT-BC444184  Lewisia nevadensis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  SEINET10572653  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2673 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC2026869  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte On the south side of the paved park road, west of entrance from Woodland Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC130702  Lilium pardalinum A. A. Heller 1928-6-16 14622 Butte Butte Meadows Comment
  CHSC4681  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  CAS-BOT-BC133043  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC24944  Limnanthes alba M. L. McCrum 1976-4-26 18 Butte Ca. 6.0 mi sw of Cohasset on Cohasset Rd., .25 mi e on dirt rd. 365 Comment
  POM181724  Limnanthes alba H. F. Copeland 1923-4-12 618 Butte near Biggs Comment
  SEINET12182115  Limnanthes alba Unknown 1890-1 s.n. Butte State Normal School, Chico Comment
  HSC97150  Limnanthes alba subsp. alba T. W. Henrich 2004-4-15 Butte NE of Viceroy Drive and Camberwell Court, NE Chico. Comment
  HSC86001  Limnanthes douglasii J. Hunter 1986-3-21 32 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  SEINET12183046  Limnanthes douglasii Unknown 1978-1 37 Butte ca .25 mi w of Cherokee Road, ca 6.5 mi S of Highway 70, ca 5.5 mi N of Oroville 518 Comment
  UCSB63634  Limnanthes douglasii O'Connor-Henry, K. 1985-4-19 Butte North Table Mtn., ca. 500 yd. w of Cherokee Rd. and 4.5 mi. n of Oroville 365 Comment
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  JEPS89153  Limnanthes douglasii subsp. nivea A. A. Heller 1914-4-3 11261 Butte 8 mi nw Oroville Comment
  UC971798  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1254 Butte Table Mt. Oroville (summit) Comment
  CHSC48992  Limosella acaulis Vernon Oswald 1987-8-10 3201 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  UC907828  Linanthus bicolor P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway-up Hunnicut Grade); Hunnicut Grade Comment
  POM65888  Linanthus dichotomus subsp. meridianus E. B. Copeland 1903-4-11 3030 Butte Chico. Comment
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May 3 2021
  SEINET9369866  Linanthus filipes Unknown 1996-7-9 13171 Butte Plumas National Forest Comment
  UC196264  Linanthus harknessii A. A. Heller 1914-8-8 11671 Butte Jonesville 1524 Comment
  CHSC27988  Linanthus pungens M. S. Taylor 1978-7-18 1699 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC109777  Lindernia dubia var. anagallidea Lowell Ahart 2012-10-20 18512 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  CHSC43218  Linnaea borealis var. longiflora L. P. Janeway 1987-6-19 2225 Butte Along Sly Cr near road crossing, 2.1 mi from the Challenge-LaPorte Rd towards the SE side of Sly Cr Reservoir. 1097 Comment
  JEPS98310  Lipocarpha micrantha Lowell Ahart 2000-9-2 8679 Butte 4 air miles SW of Oroville (about 1/2 mi W of Pacific Heights Road); Oroville Wildlife Area 42 Comment
  UC176225  Lithocarpus densiflorus A. A. Heller 1913-6-7 10798 Butte near Stirling 1074 Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  CHSC3976  Lithophragma E. P. Parreno 1967-4-10 Butte Not so common locally. 300 yards from covered bridge. 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
  SEINET10483000  Lithophragma Mary Susan Taylor 1981-5-7 Taylor 3635 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
  CHSC60587  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1993-4-19 5276 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. Near the trailhead on Jordan Hill Rd. 707 Comment
  CHSC42858  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte On a black lava rock, near seeps, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC97401  Lithophragma glabrum Robert Fischer 2006-6-11 1007 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of the Humboldt Road junction. UTM: 10634233E, 4441779N. 1752 Comment
  SJSU5717  Lithophragma parviflorum var. trifoliatum T. C. DeWitt 1971-4-2 Butte Humboldt Rd, 1 mi S of intersection with Hwy 32 304 Comment
  SEINET10870096  Lithospermum californicum Mary Susan Taylor 1980-5-8 Taylor 2603 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC316346  Lithospermum californicum Wayne Roderick 1967-4-15 s.n. Butte In Pinkton Canyon, Feather River. 609 Comment
  HSC38061  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-10 2468 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  CHSC6730  Lolium multiflorum B. Anthony 1968-3-24 411 Butte Archery course, Bidwell Park, Chico. Comment
  UCD66624  Lolium temulentum R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 4 mi. N of Gridley. Comment
  UCD150870  Lomatium caruifolium var. denticulatum W. R. Powell 1968-4-22 1464 Butte 3 miles north of Honcut. 32 Comment
  CHSC60646  Lomatium dissectum var. multifidum Vernon H. Oswald 1993-4-12 5257 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. P 341 Comment
  CHSC42614  Lomatium macrocarpum Vernon Oswald 1985-5-2 1746 Butte Concow Rd. 0.1 mi s of its jct. with Ponderosa Way. 975 Comment
  CHSC32755  Lomatium marginatum J. D. Jokerst; R. A. Schlising 1981-4-16 1297 Butte S side of Olive Highway, 0.3 mi SW of it's junction with Forbestown Rd (ca. 6.0 mi E of Oroville). Comment
  CHSC102186  Lomatium marginatum var. marginatum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  JEPS127215  Lomatium marginatum var. marginatum Lowell Ahart 2016-5-14 20822 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC101660  Lomatium utriculatum Lowell Ahart 2009-4-26 15646 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, on the east side of Guardians Trail, about 200 yards southwest of Pine Trail. 381 Comment
  CHSC33347  Lomatium utriculatum Laurel L. Huey 1980-4-21 4 Butte Ca. 80 m se of Butte Creek at Covered Bridge. 125 Comment
  SD5000  Lonicera conjugialis E. B. Copeland 1930-6-27 Butte Jonesville 1550 Comment
  UCD137320  Lonicera hispidula E. D. Phelps 1930-9-23 2150 Butte Pulga. Comment
  CHSC51218  Lonicera involucrata var. involucrata L. P. Janeway 1987-6-19 2245 Butte Strawberry Valley Cr at crossing of Barton Hill Rd 2.4 mi from Travis Saddle and the Challenge-LaPorte Rd. 1051 Comment
  UC81117  Lotus crassifolius Mrs. R. M. Austin Jun 1899 390 Butte n of Chico (Humboldt road) Comment
  SEINET10841208  Lotus humistratus Mary Susan Taylor 1981-5-15 Taylor 3734 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  SEINET12165761  Lotus nevadensis Unknown 1985-1 5039 Butte Enterprise Lauch Area, ca 3/4miW of Enterprise Bridge acroos Lake Oroville, NE of Oroville 274 Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  JEPS115264  Lotus purshianus var. purshianus Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  UC1562369  Lotus scoparius Lowell Ahart 1990-5-21 6474 Butte 4.5 mi sw Oroville (0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  CHSC46294  Ludwigia palustris Vernon Oswald 1989-5-30 3792 Butte Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. On the margin of the lake. 54 Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  CHSC93351  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. 548 Comment
  JEPS122451  Lupinus albicaulis L. P. Janeway 2014-5-29 11277 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. Quad Forbestown 7.5'. Comment
  UC727111  Lupinus albicaulis A. A. Heller 1940-6-5 15704 Butte along the Feather River Highway between Pulga and Arch Rock Tunnel; Feather River Highway btw Pulga and Arch Rock Tunnel Comment
  UC865406  Lupinus albicaulis A. A. Heller 1937-5-31 15339 Butte on Highway #24 near the junction of the Yankee Hill Road about 21 mi from Oroville Comment
  SFV11556  Lupinus albifrons M. L. Vincent 1965-4-16 618 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  JEPS124247  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  RSA712785  Lupinus albifrons var. albifrons L. P. Janeway, B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1052 Comment
  CAS-BOT-BC196248  Lupinus albifrons var. eminens A. A. Heller 1915-3-25 11782 Butte Southwest end of the Marysville Buttes Comment
  CAS-BOT-BC196252  Lupinus albifrons var. eminens A. A. Heller; H. E. Brown 1902-5-8 5501 Butte Berry Canyon (Near Clear Creek) Comment
  UC426914  Lupinus arbustus E. B. Copeland 1930-6-29 421 Butte Jonesville 1600 Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  RSA256666  Lupinus benthamii var. benthamii Dave Knorr 1974-4-20 140 Butte On Orovilles Table Mtn. near Cherokee Rd. Comment
  CHSC57378  Lupinus bicolor Sean Brown 1990-4-17 15 Butte Vic. covered bridge, s bank of Butte Ck., ca. 11.6 km ese of Chico. 120 Comment
  HSC71549  Lupinus bicolor J. P. Smith 1973-3-22 5913 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  JEPS103396  Lupinus bicolor Lowell Ahart 2002-4-14 9488 Butte Nelson, between the Railroad and the Midway Road, 50 yds N of Nelson Dlavo Road 36 Comment
  UCSB63589  Lupinus bicolor Fillinger, Jennifer 1991-4-7 Butte 2 mi. NE of Chico Municipal Airport, at jct. of Cohasset Road and Richardson Springs Road 60 Comment
  RSA32827  Lupinus bicolor subsp. tridentatus A. A. Heller 1939-4-10 15376 Butte Lower part of the Cohasset road near the foot of the grade near Rock Creek. Comment
  CHSC3568  Lupinus bicolor var. tridentatus R. D. Briggs 1966-3-5 32 Butte Three miles due north of Oroville, on hwy #70. Comment
  CHSC37121  Lupinus latifolius var. columbianus L. Ahart 1982-9-20 3842 Butte Along the edge of the road, a little w of the mine tailings along Pinkard Creek, ca. 1.5 mi n of Los Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC40601  Lupinus pachylobus J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1962 Butte Common on open annual grasslands north of Kunkle Reservoir, e of Pentz Rd., s of Paradise. 457 Comment
  CHSC92538  Lupinus pachylobus L. P. Janeway 2005-3-10 8347 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET194919  Lupinus rubricaulis A. A. Heller 1942-5-18 16478 Butte About a valley oak tree in a grassy field a short distance west of the Hooker oak, east of Chico. Comment
  CHSC30694  Lupinus stiversii M. S. Taylor 1980-5-27 2670 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC90039  Lupinus stiversii Robert C. Hill 1990-4-12 18 Butte At entrance to Enterprise Boat Launch. 13 mi e of Oroville, 1 mi w of Enterprise Bridge. 457 Comment
  UCD109586  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CAS-BOT-BC436564  Luzula cascadensis H. F. Copeland 1920-8-29 145 Butte Jonesville meadow 1219 Comment
  CAS-BOT-BC441414  Luzula cascadensis L. P. Janeway 1987-7-5 2441 Butte 0.4 mi. E of a spur road from the Concow Road, which is 1.0 mi. SW of Jones Meadow 1798 Comment
  CAS-BOT-BC320471  Luzula comosa var. laxa Peter F. Zika 2011-7-6 25530 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  UC600795  Luzula comosa var. laxa H. F. Copeland 1932-7-17 Butte In damp woods across road from Copeland Cabin (Jonesville); Jonesville 1550 Comment
  CHSC43793  Luzula divaricata Vernon Oswald; Lowell Ahart 1987-7-1 3085 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. Just above the high-water level on the s side of the large lake. 1935 Comment
  CHSC87441  Luzula macrantha R. D. Fischer 2004-4-3 105 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail, 0.25 miles south of Pine Trail junction. 396 Comment
  SBBG128085  Lychnis coronaria L. Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, bottom of an old gold mined area, ca. 400 yards SW of the cemetery, ca. 10 mi NE of Oroville 305 Comment
  SEINET10537470  Lychnis coronaria Mary Susan Taylor 1978-7-21 Taylor 1821 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC46307  Lythrum californicum Vernon Oswald 1985-6-5 1810 Butte River Rd. 0.5 mi sw of its jct. with Chico River Rd. 36 Comment
  CHSC102421  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, 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
  CHSC116744  Lythrum hyssopifolia Lowell Ahart 2016-5-24 20861 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC46641  Lythrum hyssopifolia Lowell Ahart 1989-7-4 6364 Butte Growing in a mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC42367  Lythrum tribracteatum Lowell Ahart 1987-5-10 5608 Butte In idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC75289  Lythrum tribracteatum Lowell Ahart 1999-5-21 8073 Butte On the sides and bottom of a drain ditch in a pasture field, 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
  CAS-BOT-BC342643  Madia citrigracilis Vern Oswald; Bruce Baldwin 1988-6-16 3388 Butte Camp Creek Rd. ca. 0.5 mi ene of Pulga 512 Comment
  SEINET3450906  Madia elegans Unknown 2003-6-30 10321 Butte Forbestown, Forbestown, about 2 miles air northwest, east side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  CAS-BOT-BC342713  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  UCD150343  Madia elegans Harry George 1967-8-30 s.n. Butte Butte Creek and 99E Highway. Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC65540  Madia exigua L. P. Janeway 1995-6-19 4796 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CAS-BOT-BC334651  Madia glomerata H. M. Hall 1914-7-22 9774 Butte Jonesville Comment
  CAS-BOT-BC342960  Madia gracilis A. A. Heller 1914-8-6 11643 Butte About Chico Meadows 1219 Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 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
  SEINET10475286  Malacothrix floccifera Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4723 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
  CDA14064  Malus sylvestris G. F. Hrusa, T. D. Wilfred 1997-5-1 13711 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. 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
  JEPS119994  Malva parviflora Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17915 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC45329  Malvella leprosa Vernon Oswald 1986-9-17 2289 Butte Bell Rd. 0.7 mi e of Hamilton-Nord-Cana Hwy, ca. 1.5 mi se of Nord. 42 Comment
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CAS-BOT-BC67812  Marsilea vestita Lowell Ahart 1980-6-15 2376 Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA724939  Marsilea vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley 23 Comment
  SEINET10530352  Marsilea vestita Mary Susan Taylor 1980-6-29 Taylor 2989 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
  CHSC76396  Marsilea vestita subsp. vestita Lowell Ahart; Vernon H. Oswald 1999-10-3 8286 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC34400  Meconella californica R. N. Bowman 1981-5-21 2083 Butte East-facing slope, s bank of Butte Creek, .1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC7075  Meconella californica M. I. Moore 1969-4-26 5 Butte Ca. 1000 yds. e of Big Chico Creek. e of covered bridge on Honey Run Rd., Chico. 106 Comment
  SEINET10476233  Meconella californica Mary Susan Taylor 1974-3-19 Taylor 84 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  SEINET10476234  Meconella californica Mary Susan Taylor 1975-3-10 Taylor 407 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
  SEINET12089314  Meconella californica Unknown 1978-1 5 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug and Honey Run Rds, 6.4 mi ESE of 146 Comment
  CHSC101141  Medicago arabica Lowell Ahart 2009-5-15 15712 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
  UCD106759  Medicago arabica A. A. Heller 1915-5-2 11864 Butte Hills 12 miles northeast of Chico near Rock creek. Comment
  HSC93376  Medicago arabica L. Ahart 1995-5-30 7587 Butte Edge of Beatson Hollow Creek, about 1 mi. NW of Cherokee Road, N Table Mountain, about 7 mi. N of Oroville 305 Comment
  CDA31966  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC82435  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS103293  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS115844  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC108817  Medicago praecox Lowell Ahart 2012-4-9 17836 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CAS-BOT-BC271133  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CHSC93876  Melica aristata Lowell Ahart 2006-6-9 12648 Butte Cutbank, on the west 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
  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
  POM204788  Melica californica var. nevadensis Copeland 1903-5-2 3254 Butte Chico Comment
  CHSC107923  Melica harfordii L. P. Janeway 2011-7-21 10519 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cut-banks. 1067 Comment
  CHSC110453  Melica harfordii L. P. Janeway 2013-5-20 11112 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. 646 Comment
  RSA4653  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1550 Comment
  UCR208160  Melica subulata Lowell Ahart 2004-7-23 11300 Butte Sierra Nevada Mountains, east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam, about 3.75 miles (air) southeast of Butte Meadows 1457 Comment
  CHSC96427  Melica torreyana Lowell Ahart 2007-4-16 13674 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CDA5721  Melissa officinalis L. Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Fall. Comment
  CHSC29816  Melissa officinalis M. S. Taylor; J. D. Jokerst 1979-10-13 2252 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow rd., ca. 5 mi e of Paradise. 426 Comment
  CDA34644  Mentha canadensis L. Ahart 2009-7-9 16009 Butte Along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC43838  Mentha pulegium B. Castro 1987-9-8 215 Butte E of the lodge at Richardson Springs resort. 182 Comment
  JEPS98512  Mentha pulegium Lowell Ahart 2000-7-17 8593 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  CDA5710  Mentha pulegium L. Ahart 2001-6-1 8746 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CHSC94587  Mentha spicata var. spicata Lowell Ahart 2006-9-13 13319 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS115650  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico 68 Comment
  UC203850  Mentzelia laevicaulis var. laevicaulis A. A. Heller 1914-8-13 11682 Butte 9 mi se Chico (Low volcanic hills, below the Quercus Douglasii belt.) Comment
  CHSC35088  Mertensia ciliata var. stomatechoides R. Schlising; R. Banchero, K. Tarp 1981-8-4 4184 Butte Extreme N part of county, E of Jonesville; in meadow along Willow Creek at crossing of Humbug Road. 1844 Comment
  CHSC44351  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 350 Comment
  CHSC4637  Micranthes californica R. Carter 1966-4-26 360 Butte Found ca. 10 mi. NE of Oroville along W side of USFS road 21N40 to Bloomer Mt., along roadside .5 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  CHSC61217  Micranthes californica Vernon H. Oswald; Lowell Ahart 1993-3-24 5237 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  UCD102799  Micranthes californica L. Ahart 1975-3-3 700 Butte Near north boundary of ranch near North Honcut Creek; Peter Ahart Ranch, Honcut. Comment
  CHSC108793  Micranthes fallax Lowell Ahart 2012-4-9 17841 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  UCD102846  Micranthes nidifica L. Ahart 1974-3-8 308 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC348462  Micropus californicus var. californicus Peter H. Raven 1953-5-9 5453 Butte 3.3 miles from Bangor on road to Oroville Comment
  CHSC26714  Microseris acuminata M. P. Hayes 1978-4-7 153 Butte On buttes at the Butte College campus on the corner of Pentz and Clark roads. 150 Comment
  RSA181843  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte Low spot along the Red Bluff - Chico road, a few miles northeast of Chico Comment
  UCD118927  Microsteris gracilis Michael A. Vincent; Ethan H. Freid 1998-4-6 8121 Butte Table Mountain. Comment
  SEINET7073609  Mimulus aurantiacus A. G. Vestal 1955-5-20 s.n. Butte About 5.6 miles south of Magalia on the Pentz Road [Pentz - Magalia Highway]. UTM Zone 10, 6223320mE, 4398975mN. Coordinate datum: NAD27. Comment
  JEPS108855  Mimulus aurantiacus subsp. aurantiacus Lowell Ahart 2006-5-10 12617 Butte Road cut bank, on the N side of the poor dirt road, Bardees Bar Road, about 100 yars N of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) SW of Pulga. 354 Comment
  RSA126024  Mimulus aurantiacus var. grandiflorus E. K. Balls 1957-5-22 22502 Butte U.S. Hwy 40, 12 mi. ne. of Oroville. Comment
  POM264771  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  JEPS117543  Mimulus guttatus Lowell Ahart 2010-6-9 16775 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  JEPS86980  Mimulus layneae David M. Thompson 1988-6-8 937 Butte 0.2 mi e Zinc road (s jct) (along Bald Rock Road) 750 Comment
  UCD85075  Mimulus layneae Dena Grossenbacher; Marisano James 2009-6-7 1032 -b Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  UC1594557  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  CHSC4561  Mimulus moschatus J. E. Bowlin 1967-7-21 48 Butte Butte Creek Canyon. 91 Comment
  CHSC94014  Mimulus moschatus R. Fischer 2004-6-12 684 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
  JEPS122032  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  RSA0116102  Mimulus primuloides var. pilosellus Lowell A. Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 miles (air) west of Philbrook Resrvoir. 1665 Comment
  SEINET10570284  Mimulus torreyi Mary Susan Taylor 1981-4-27 Taylor 3555 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
  CHSC93375  Minuartia californica Lowell Ahart 2006-4-27 12540 Butte Side of a bank, about 100 yards south of the fence and tower, pasture fields, about 4/5 mile north and 1 3/4 miles east of Honcut. 49 Comment
  UCD73014  Minuartia californica 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
  POM285522  Minuartia californica Lyman Benson 1935-3-27 6359 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  CHSC207  Minuartia cismontana S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  CHSC26819  Minuartia douglasii M. S. Taylor 1978-5-6 1575 Butte Serpentine around RR tracks, Magalia. 609 Comment
  CHSC39773  Minuartia douglasii N. E. Long 1974-3-24 Butte Atop Table Mountain, ca. 600 yards w of Cherokee Road and ca. 19.9 mi se of Chico. Comment
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  RSA304506  Minuartia douglasii Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3300 Butte North Table Mountain, 5 airmiles N of Oroville; flat-topped basalt butte, near parking area. 396 Comment
  SEINET7072729  Minuartia douglasii A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  JEPS95930  Mollugo verticillata Lowell Ahart 1999-8-13 8176 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC435066  Mollugo verticillata John Thomas Howell 1959-9-20 34635 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC435074  Mollugo verticillata Lowell Ahart 1985-10-12 5204 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 Comment
  CHSC41356  Monardella breweri subsp. lanceolata R. A. Schlising; J. D. Jokerst 1980-7-2 3812 Butte NE of Forest Ranch, at junction of Ponderosa Way and Garland Road. Comment
  SEINET12329572  Monardella lanceolata L. Ahart, Ahart, P. 1984-1 4652 Butte Along Hwy 40, now called Dark Canyon Rd, ca 2mi E of Old Yankee Hill, ca 16mi NE Oroville 450 Comment
  UC525857  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville 1800 Comment
  CHSC38478  Monardella sheltonii Vernon H. Oswald 1983-6-16 689 Butte Upper Bidwell Park, Chico, on the north rim 500 ft w of the power lines. 213 Comment
  CHSC43014  Monardella sheltonii L. P. Janeway 1987-6-26 2286 Butte 8.5 mi EW of Stirling City and 0.1 mi W of Fiver Corners on the road from Stirling City to Rag Dump. 1127 Comment
  CHSC84159  Monardella sheltonii Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the north side of the Ponderosa Reservoir, about 2 miles (air) north of Forbestown. 481 Comment
  SEINET10895146  Monardella sheltonii A. Graff 1993-7-23 Graff 343 Butte Plumas National Forest. Hwy. 70 southwest to Oroville from Arch Rock, at a turnout on the right. Mixed hardwood-conifer forest. Past bloom. Comment
  UCD125266  Monardella venosa James D. Jokerst 1992-5-19 3355 Butte Unmaned canyon north of Nugen Canyon on the south side of Neal Road, near the Butte County Sanitary Landfill. 76 Comment
  UC1009214  Monochoria vaginalis J. M. tucker and J. J. McCaskill and W. A. Harvey 1954-9-15 2753 Butte Biggs Rice Experiment Station Comment
  CDA2668  Monochoria vaginalis T. C. Fuller, J. R. Keck Jr. 1976-10-4 20166 Butte Rice Experiment Station, 3 miles north of Biggs. 0 Comment
  CHSC34085  Montia chamissoi C. Glascock 1965-5-15 418 Butte Butte Meadows public campground 0.5 mi. W of Humboldt-Scout Rd. intersection. 26.1 mi ne of Chico city limits. Comment
  CHSC56572  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-1 2928 Butte Along meadowy creek draining the lake of southeastern-most headwaters of Butte Creek. In the creek and at dryish edges. 1935 Comment
  CHSC93989  Montia chamissoi R. D. Fischer 2004-6-20 779 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. On the east side of Chico Meadows, at meadow edge. 1371 Comment
  UC392218  Montia chamissoi E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  RSA755352  Montia fontana L. P. Janeway 2008-3-18 9237 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CAS-BOT-BC444889  Montia fontana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. 70 Comment
  CHSC101654  Montia fontana subsp. chondrosperma Lowell Ahart 2009-4-26 15643 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road. On the west side of Guardians Trail, about 300 yards southwest of Pine Trail, in a wet drainage. 381 Comment
  CHSC115420  Morus alba Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail near fern wall Recreation area. 89 Comment
  JEPS110334  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north 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
  CHSC103439  Muhlenbergia filiformis Lowell Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC61373  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CDA30213  Muhlenbergia mexicana L. Ahart 2009-7-9 16023 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  CHSC42515  Myosotis discolor Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC58675  Myosurus minimus subsp. minimus M. Bailey 1991-4-21 Butte Bottom of drainages, Butte Community College campus. Drainages located atop a ridge north of Wallis Ponds and east of Williams Road, ca 1/4 mi north of Pentz Road. 121 Comment
  UC1586518  Najas graminea Lowell Ahart 1991-9-14 6723 Butte About 2 miles east of Honcut, Joie Osgood Ranch. 45 Comment
  CHSC39099  Nama lobbii R. A. Schlising 1980-7-28 3929 Butte E of Jonesville in n part of county, on road to Scotts John Creek. Comment
  CHSC44042  Nama lobbii L. P. Janeway 1987-6-27 2329 Butte Along Little Kimshew Cr just north of Ramsey Bar. Open sandy DG among mtn. whitethorn. Site of old Ramsey Bar mining and timber activities. 1341 Comment
  SEINET10871965  Narthecium californicum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC113498  Navarretia capillaris Lowell Ahart 2014-7-16 19681 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10496820  Navarretia divaricata Lowell Ahart 1983-8-16 Ahart 4303 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC61002  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1609065  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte about 1 air mi nw Lost Creek Reserovir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET7373988 Image available Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte Three and one-quarter miles SW of Forbestown, intersection of Forbestown Rd. and Black Bart Rd. 150 yds E of intersection. Comment
  UC101993  Navarretia filicaulis Mrs. C. C. Bruce Jun 1887 1137 Butte Forest Ranch Comment
  UC1228165  Navarretia heterandra Beecher Crampton 1960-6-15 5623 Butte 10 mi se Chico Comment
  CHSC20514  Navarretia intertexta M. S. Taylor 1975-6-25 799 Butte Above dam area, ca. 1/2 mi n of Richardson Springs Hotel, ca. 7 mi ne of Chico. 243 Comment
  UC172824  Navarretia intertexta A. A. Heller 1913-5-25 10759 Butte near Pentz 152 Comment
  SEINET10496826  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1611 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC102608  Navarretia intertexta subsp. intertexta L. P. Janeway; B. Castro 2009-7-4 9841 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  SEINET7072733  Navarretia intertexta subsp. intertexta A. G. Vestal 1963-5-9 s.n. Butte About 11 miles southeast of Chico on Route 99. UTM Zone 10, 612125mE, 4386570mN. Coordinate datum: NAD 27.) Comment
  RSA4130  Navarretia leptalea E. B. Copeland 1930-6-28 444 Butte Jonesville. 1650 Comment
  CHSC20676  Navarretia leucocephala M. S. Taylor 1975-4-29 539 Butte In vernal ponds, ca. 500 yds s of Pentz Rd, ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. 60 Comment
  UCSB63717  Navarretia leucocephala Romano, Marci 1986-4-15 Butte junction of Broyles Rd and Hwy 99 11 m N of Chico 68 Comment
  RSA692213  Navarretia leucocephala subsp. leucocephala L. Ahart 2003-5-28 10232 Butte Bottom of Hendricks ditch, about 1 3/4 miles W of the iron gate and fence, W of Cherokee Road, North Table Mountain, about 7 miles (air) N of Oroville. 272 Comment
  JEPS9647  Navarretia nigelliformis subsp. nigelliformis A. A. Heller 1914-5-14 11402 Butte pastured field near Dry Creek (sw of Pentz) Comment
  CHSC69482  Navarretia pubescens James D. Jokerst 1992-5-19 3366 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On a terrace at powerlines on S side of Sheep Hollow. 97 Comment
  UC1124127  Navarretia pubescens C. G. Albertus 1933-6-6 26 Butte 1.5 mi w Pentz; Chico Quad. 137 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  SEINET12332632  Navarretia tagetina Unknown 1988-1 20 Butte SW corner of intersection of Hwy 99 and Broyles Rd, ca 11 mi N of Chico 67 Comment
  CHSC62102  Nemacladus interior L. P. Janeway 1993-7-1 4415 Butte Plumas National Forest. North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the 'low water crossing' of French Creek. 624 Comment
  SEINET10840525  Nemacladus interior Brooks BROOKS s.n. Butte Enterprise, Type location Comment
  SEINET12326949  Nemophila heterophylla R. A. Emmrich 1975-1 54 Butte ca 0.5 mi E of Butte Creek and 0.25 mi SE of Covered Bridge, 6 mi ESE of Chico 107 Comment
  CHSC105956  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CDA5772  Nicotiana alata L. C. Going 1964-4-2 Butte 694 Roberts Road, Paradise. 0 Comment
  UC985680  Nuphar lutea subsp. polysepala Herbert L. Mason, Verne Grant 1946-8-14 13029 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Butte Sink; , Sacramento Outing Club Comment
  UCD160271  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  CHSC39923  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge se of Flea Mt. n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CAS-BOT-BC499847  Orobanche fasciculata A. A. Heller 1928-4-30 14538 Butte Along the Neal Road about 3 mi below Paradise Comment
  RSA0076586  Orobanche fasciculata Lonnie Bookbinder 1967-4-15 7 Butte Southeast of Paradise. 914 Comment
  CHSC1169  Orobanche vallicola J. Wakeman 1962-8-12 Butte Bank of Chico Creek, Bidwell Ave. near Rodgers. 54 Comment
  SEINET4854291  Orthocarpus bicolor Unknown 1902-5-10 5519 Butte Berry Canyon, (near Clear Creek). Comment
  RSA401999B  Orthocarpus erianthus J. Doty 1969-4-1 619 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  SEINET10931220  Orthocarpus hispidus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4044 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET12326946  Orthocarpus purpurascens Unknown 1981-1 12 Butte no further locality 372 Comment
  SEINET10935052  Oryza sativa Lowell Ahart 1984-9-17 Ahart 4793 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CHSC31455  Oxalis corniculata L. Ahart 1980-10-27 2690 Butte Near the garden area near our home, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10495035  Oxalis corniculata Mary Susan Taylor 1975-4-6 Taylor 438 Butte Chico. 52 Comment
  CHSC20095  Oxalis pes-caprae M. S. Taylor 1975-4-6 432 Butte Along fence on ne corner of Arcadian St. and 4th Avenue, Chico. 60 Comment
  CHSC26738  Oxypolis occidentalis M. S. Taylor 1977-7-15 1407 Butte On edge of Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  CAS-BOT-BC334337  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 Butte 100 yards S of the road to the Forbestown Res., S of the Forbestown Ditch, about 2.5 miles NE of Forbestown 883 Comment
  CAS-BOT-BC316890  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1954-5-31 54085 Butte Feather River Canyon, near Pulga 396 Comment
  CHSC41348  Panicum acuminatum R. A. Schlising 1981-6-27 4111 Butte N part of county NE of Lomo along Humboldt road. 1341 Comment
  JEPS94729  Panicum acuminatum var. acuminatum Lowell Ahart 1998-7-1 8019 Butte about 7 air mi n Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  CHSC34053  Panicum capillare L. Ahart; M. S. Taylor 1981-8-15 3042 Butte On bottom of Snag Lake, on n side of lake, ca. 10 mi n of Inskip. 1500 Comment
  JEPS76249  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  SEINET10901935  Panicum dichotomiflorum Lowell Ahart 1990-9-30 Ahart 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC116140  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2015-10-26 20606 Butte Strand of Lake Oroville, on west side of West Branch of Feather River,about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southest of Paradise. 207 Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  CHSC43941  Papaver somniferum Vernon Oswald 1988-4-29 3290 Butte Meridian Rd., 0.4 mi e and then n of Hwy 99. On the edge of the road. 57 Comment
  UC420405  Parnassia californica unknown July 1896 Butte Colby Comment
  CHSC8571  Paspalum dilatatum M. MacArthur 1968-6-23 291 Butte Ca. 30 ft. SW of Big Chico Creek up slope by Esplanade bridge, Chico State College. 60 Comment
  SBBG649  Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 mi N of Gridley Comment
  CDA2123  Paspalum urvillei G. D. Barbe, T. C. Fuller 1981-10-9 3593 Butte Frontage of 9478 Black Bart Road, 1.3 miles east of Forbestown Road, Hurleton. Comment
  CAS-BOT-BC202819  Paxistima myrsinites Lowell Ahart 1982-9-13 3827 Butte Along the edge of the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC42058  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville. 609 Comment
  CHSC46854  Pectiantia pentandra R. A. Schlising 1998-7-11 4596 Butte N of Crane Valley; near Balsam Creek. Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC97737  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  CHSC28510  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1979-10-13 2265 Butte W side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC28881  Pellaea mucronata M. S. Taylor 1980-2-24 2323 Butte On the east branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  CHSC39232  Pellaea mucronata M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5216 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CAS-BOT-BC67555  Pellaea mucronata David D. Keck 1932-7-2 1616 Butte Sierra Nevada - 1/5 miles S of Berry Creek Store, Oroville (on Quincy Road) 548 Comment
  CDA35765  Pellaea mucronata J. R. Keck Jr. 1981-5-13 PDR# 330200 Butte Oroville. 0 Comment
  SEINET10529803  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5230 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
  SEINET10529804  Pellaea mucronata Mary Susan Taylor 1979-11-15 Taylor 2291 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10932921  Pellaea mucronata Mary Susan Taylor 1981-5-15 Taylor 3733 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  CDA36308  Penstemon azureus J. R. Keck Jr. 1978-5-23 PDR# 330034 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  RSA712797  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  NY91054  Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte Richardson Springs near Chico. Upper Sonoran Zone. 152.4 Comment
  UC195477  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  CHSC91461  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 733 Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  JEPS48314  Penstemon heterophyllus var. heterophyllus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 Butte Pulga Bridge, west side North Fork Feather River North Fork of Feather River, Pulga Bridge 472 Comment
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Nov 20 2007
  UC398654  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte seven mi n Chico (along Rock Creek); , n of Chico Comment
  HSC66308  Penstemon laetus subsp. leptosepalus M. S. Taylor 1980-6-14 2878 Butte N side of Zink Rd., near entrance to Zink Ranch, 2 mi. E of Lake Madrone 762 Comment
  CHSC62137  Penstemon laetus var. leptosepalus L. P. Janeway 1993-7-2 4420 Butte Plumas National Forest. Southwest side of Swayne Hill, 1 mi northeast of mouth of French Creek. Along Rd 23N28 1.3 mi north of Rd 22N34. 743 Comment
  NY604513  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  UC600437  Penstemon laetus var. leptosepalus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks (Jonesville); , between Willow and Colby Creeks Comment
  NY604512  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14624 Butte Along the road 2 miles above the Ten Mile House, east of Chico. Comment
  NY604516  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen National Forest. 640.1 Comment
  NY627277  Penstemon neotericus D. D. Keck 1930-7-24 970 Butte 7 miles above Chaparral (near Humbug Summit) 1706.9 Comment
  CHSC92761  Penstemon newberryi var. newberryi L. P. Janeway 2005-5-29 8412 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. Steep east-facing slope. 1478 Comment
  CHSC48080  Pentagramma triangularis Sharol Lindenstein 1989-4-11 44 Butte Upper Bidwell Park, 0.1 mi nw of Upper Park Rd., 2.7 mi e of jct of Upper Park Rd. and Wildwood Ave., e side of Chico. 79 Comment
  HSC66081  Pentagramma triangularis M. S. Taylor 1980-4-16 2483 Butte Lake Oroville State Recreation Area, 0.5 mi. SE of Parish Camp, just S of Lime Saddle Memorial Park 5 mi. S of Paradise 305 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC101304  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS104149  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-10 10075 Butte Below the basalt cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 309 Comment
  CHSC40438  Perideridia bacigalupii Lowell Ahart 1985-8-15 5163 Butte 50 yards south of the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 883 Comment
  SEINET10454553  Perideridia lemmonii Lowell Ahart 1985-6-30 Ahart 5083 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CAS-BOT-BC413700  Persicaria hydropiper John Thomas Howell 1961-9-22 36770 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CHSC48663  Persicaria lapathifolia Vernon Oswald 1987-8-10 3202 Butte Snag lake located 2.5 mi (air) se of Jonesville. Scattered plants in moist soil on the east side of the reservoir near the normal high-water line. 1726 Comment
  JEPS120613  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 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
  UCD99569  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte 8 miles north of Oroville Comment
  CHSC110406  Persicaria punctata Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 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
  CHSC31381  Petrorhagia dubia J. D. Jokerst 1979-4-20 1209 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd. and the E edge of the mountain. 396 Comment
  CHSC75265  Petrorhagia dubia Jennifer Slater 1997-4-20 26 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 67 Comment
  CDA3408  Petrorhagia dubia T. C. Fuller 1963-7-15 10856 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  CHSC4595  Phacelia egena C. Glascock 1965-4-10 305 Butte 2.5 mi. s on Clark Rd. from its intersection with Pearson Rd., Paradise. Comment
  SEINET12331808  Phacelia heterophylla L. Ahart, Ahart, P. 1984-1 4722 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  UC1602038  Phacelia heterophylla subsp. virgata P. L. Johannsen 1936-7-17 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  CHSC59549  Phacelia imbricata Lowell Ahart 1992-9-20 6922 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  SD122566  Phacelia imbricata Lowell Ahart, Peter Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2.0 miles east of Old Yankede Hill, ca. 16 miles northeast of Oroville. 449 Comment
  SEINET12329569  Phacelia imbricata L. Ahart, Ahart, P. 1984-1 4654 Butte along Hwy 40, now called Dark Canyon Rd, ca 2 mi E of Old Yankee Hill, 16 mi NE of Oroville 450 Comment
  POM193436  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Near Butte Creek, Jonesville. 1550 Comment
  RSA718394  Phacelia purpusii L. Ahart 2006-7-16 12962 Butte Near the open mudflow area, on the S side (road edge) of Humboldt Road, about 1.5 miles (air) SW of Butte Meadows. 1436 Comment
  CHSC48476  Phacelia tanacetifolia Vernon Oswald 1985-4-15 1710 Butte Upper Bidwell Park, Chico, on the north rim ca. 1 mi e of the power lines. 320 Comment
  CHSC49564  Phalaris brachystachys Vernon Oswald 1987-5-1 2362 Butte Rancho Aquas Frias. Collected along Goodspeed-Watt Rd. at the Western Canal. 39 Comment
  CAS-BOT-BC77377  Philadelphus lewisii Lewis S. Rose 1940-5-30 40423 Butte Feather River Canyon, 25 mi. ne. of Oroville 609 Comment
  CHSC37653  Philadelphus lewisii T. B. Devine 1981-8-25 755 Butte Beside Hwy 70 near Bear Creek Ranch, along N Fork of Feather River near Cresta. 426 Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  SEINET10657662  Phleum pratense Lowell Ahart 1988-6-23 Ahart 6061 Butte Timothy. On damp rocky soil, along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville, Foothill Woodland. 259 Comment
  SEINET10496850  Phlox diffusa Mary Susan Taylor 1978-7-18 Taylor 1713 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC98335  Phlox speciosa L. P. Janeway; B. Castro 2007-5-6 8969 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley. 1.8 air km northeast of Sawmill Peak. Disturbed serpentine chaparral, rocky soil. 969 Comment
  CHSC103145  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC116677  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yaards north of the intersection of Smullin Road and Ahart Road, east side of Honcut, about 13 miles south of Oroville. 30 Comment
  CHSC32113  Phoradendron serotinum subsp. macrophyllum L. Ahart 1977-3-19 1227 Butte Along edge of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  UCD41361  Physalis lancifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 864 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC44289  Physocarpus capitatus V. Oswald; W. Dempsey, D. Perske 1988-6-15 3384 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Along the W. Branch of Mud Creek. 853 Comment
  CHSC76344  Phytolacca americana L. P. Janeway 1999-7-12 6502 Butte Campus of California State University, Chico; north side of Big Chico Creek in weedy landscaping on the north side of Holt Hall. 59 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC6641  Pinus M. MacArthur 1968-6-13 366 Butte Chico State College campus. 60 Comment
  CAS-BOT-BC78450  Pinus contorta subsp. murrayana John H. Thomas 1974-11-3 17660 Butte Between Stirling City and Butte Meadows, north of Chico. 4.9 miles from Butte Meadows as measured along the road 1524 Comment
  CHSC88624  Pinus ponderosa H. Gray 2003-1-17 Butte Plumas National Forest. Zink Road. 792 Comment
  CHSC109525  Pinus ponderosa var. pacifica L. P. Janeway 2012-6-23 10893 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SDSU1998  Pinus sabiniana Harvey 1939-7-30 2512 Butte Near Oroville Comment
  JEPS120072  Pistacia atlantica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS120071  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10529817  Pityrogramma pallida Mary Susan Taylor 1980-4-6 Taylor 2446 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
  CHSC115000  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  POM287609  Plagiobothrys Lyman Benson 1935-3-27 6356 Butte U.S. 99E, Gridley. 30 Comment
  CHSC34718  Plagiobothrys austiniae M. S. Taylor 1980-3-1 2338 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC103936  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
  CHSC40760  Plagiobothrys fulvus var. campestris Ahart; Jokerst 1985-5-10 4948 Butte On the sides of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UCD80148  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-14 SNFN 0033 a Butte Private Rock Ranch. Plot is located in the horse pasture, near the NE corner of the pasture located west of the barn and house, ~10 m from corner of pasture fence. 105 Comment
  CHSC43392  Plagiobothrys glyptocarpus Lowell Ahart 1979-5-7 1856 Butte Near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 472 Comment
  CAS-BOT-BC228252  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 Comment
  RSA0116258  Plagiobothrys hispidulus Lowell A. Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  UC480660  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte hogwallow near head Willow Creek; Jonesville, head Willow Creek Comment
  UC600448  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  UC881334  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows west slope of the Sierra Nevada 1219 Comment
  CHSC29051  Plagiobothrys leptocladus R. A. Schlising 1980-4-14 3561 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; at dried margins of pools that contained standing water in winter. Comment
  CHSC52336  Plagiobothrys leptocladus J. D. Jokerst; V. Oswald 1985-4-14 2232 Butte Top of North Table Mountain north of Cherokee Rd near the easedge of the mesa. 396 Comment
  CHSC3933  Plagiobothrys nothofulvus L. R. Alexander 1967-4-6 30 Butte Ca. 200 yds. s of East Lassen Ave., Cohasset road intersection on the right hand side of Cohasset road. 59 Comment
  CHSC46762  Plagiobothrys nothofulvus Lowell Ahart 1980-4-30 2123 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road, north of Bangor. 295 Comment
  SEINET12249493  Plagiobothrys scriptus Unknown 1983-1 3918 Butte about 1 mi NE of Hwy 99 & Pentz Rd 65 Comment
  CHSC111338  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte Bottom of a small depression, about 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  CHSC78129  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-6-6 8451 Butte On the sides of an old gold mining pit, southeast 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
  JEPS104289  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-6-23 10309 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
  CHSC28150  Plagiobothrys tenellus Robert A. Schlising 1979-4-22 3375 Butte Along the Skyway, ca 1 mi s of jct with Neal Road in Paradise. Comment
  RSA32734  Plagiobothrys tenellus A. A. Heller 1938-4-14 15037 Butte Between Pentz and Cherokee. Comment
  CHSC80518  Planodes virginica Lowell 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 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  CHSC82239  Planodes virginica Lowell Ahart 2002-3-28 9455 Butte In a rice field, on the north side of Gridley Road, about 5 miles west of Gridley. 21 Comment
  CHSC38581  Plantago elongata Vernon Oswald 1983-3-14 174 Butte Upper Bidwell Park, Chico, along the hiking trail on the north slope ca. 1600 ft w of the power lines. 195 Comment
  CHSC47459  Plantago elongata Lowell Ahart 1974-4-24 426 Butte Growing on the bottom of small vernal pools, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS104005  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 348 Comment
  POM61255  Plantago erecta Copeland 1903-4-10 3034 Butte Chico. Comment
  SEINET9784516 Image available Plantago lanceolata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UC102803  Plantago lanceolata Mrs. R. M. Austin May 1896 290 Butte Little Chico Creek Comment
  JEPS114771  Plantago major Lowell Ahart 2008-7-23 15145 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC106878  Plantago virginica Lowell Ahart 2011-5-10 17355 Butte Southeast of the tower, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CHSC113501  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte West 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
  SEINET10470060  Platanthera dilatata var. leucostachys Mary Susan Taylor 1980-1 Butte Comment
  CHSC26857  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1645 Butte In Cherry Creek Meadow, on s side of Old Humbodt Rd, ca. 4 mi e of Butte Meadows. 1524 Comment
  CAS-BOT-BC93160  Platanus racemosa John Thomas Howell 1975-6-15 51067 Butte Butte Creek near Chico. 60 Comment
  CHSC6608  Platycladus orientalis M. MacArthur 1968-6-16 318 Butte On the Aymer Jay Hamilton School play field along the Esplanade, Chico State College campus. 60 Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  CHSC31899  Plectritis ciliosa L. Ahart 1974-4-11 377 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC60694  Plectritis macrocera Vernon H. Oswald; James Snowden 1993-4-7 5252 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  POM253142  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 Comment
  UC105888  Pleuricospora fimbriolata Mrs. R. M. Austin July 1896 361 Butte Colby Comment
  CHSC38842  Poa annua Vernon Oswald 1983-2-14 75 Butte Upper Bidwell Park, Chico, in Parking Area K at Bare Hole (1 mi e of the power lines). 109 Comment
  CHSC89036  Poa bulbosa A. Peterson 2003-3-25 10 Butte East of Chico, Humboldt Rd., along road edge. 152 Comment
  CHSC38843  Poa howellii Vernon Oswald 1983-3-31 232 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. at about the level of Brown's Hole (2.6 mi e of the power lines). 243 Comment
  JEPS121977  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC111401  Poa pratensis subsp. pratensis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey. 2012-6-28 18240 Butte About 1/3 of a clump, on wet good soil, on the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 61 Comment
  UC600761  Poa pratensis subsp. pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  CAS-BOT-BC236370  Poa secunda subsp. secunda Lowell Ahart 1979-5-7 s.n. Butte 2.5 miles SE of Paradise 472 Comment
  CHSC101254  Poa secunda subsp. secunda L. P. Janeway; B. Castro 2009-4-11 9724 Butte Northern Sierra Nevada Foothills. At saddle of ridge between Oroville Dam boat ramp and Potter Ravine, 1.2 km north of the boat ramp. 340 Comment
  HSC39887  Poa secunda subsp. secunda J. P. Smith 1973-3-22 5932 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  UCD91854  Poa secunda subsp. secunda Robert E. Preston 1982-3-25 203 Butte Ca. 1/4 mile E of Pulga. 487 Comment
  CAS-BOT-BC244159  Poa sierrae Lowell Ahart 1980-5-29 2355 Butte 5 miles NE of Mountain House 1100 Comment
  CHSC96855  Poa sierrae Lowell Ahart 2007-5-22 13914 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  RSA768981  Poa tenerrima L. Ahart 2010-5-14 16662 Butte Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 351 Comment
  CHSC25040  Pogogyne zizyphoroides P. E. Reese 1972-4-29 10 Butte Found ca. 50 ft. from Hwy. 99 at intersection with Boyles Rd. n of Chico. 60 Comment
  CHSC52215  Pogogyne zizyphoroides Linda Osborn 1980-4-22 18 Butte Ca 6 mi n jct of Esplanade on Hwy 99, 250 yds w. Comment
  UC1562380  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1990-6-1 6504 Butte on s edge of Durham Highway about 3 mi e Durham (about 1 mi w of Highway 99) 60 Comment
  UC398942  Polemonium occidentale subsp. occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville 1500 Comment
  CAS-BOT-BC167550  Polygala cornuta var. cornuta Lowell Ahart 1985-6-30 5081 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  UC1094004  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte on Pentz Road 6 mi se Paradise 426 Comment
  UC726743  Polygala cornuta var. cornuta A. A. Heller 1941-6-22 16180 Butte Cohasset Comment
  SEINET3450754  Polygonum amphibium var. emersum Unknown 2003-6-16 10287 Butte Richvale, Richvale, about 1.5 air miles southwest, dry ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road 20 Comment
  CHSC46195  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1913 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  CAS-BOT-BC109133  Polygonum bidwelliae Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley. Comment
  CHSC102850  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 411 Comment
  RSA32833  Polygonum bidwelliae A. A. Heller 1941-5-25 s.n. Butte Just back of the Rifle Range, 5 miles east of Chico, opposite golf links Comment
  UCD99854  Polygonum bidwelliae F. T. Griggs 1978-5-31 s.n. Butte East of Rifle Range, Upper Bidwell Park, Chico. 91 Comment
  RSA4213  Polygonum bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  JEPS98376  Polygonum bolanderi Lowell Ahart 2000-9-27 8694 Butte 13 air miles NE of Oroville (N side of Bean Creek Rd, 1/4 mi SE of Little Bald Rock, 1 1/4 air miles NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CHSC29705  Polygonum californicum J. D. Jokerst 1980-5-28 896 Butte Top of North Table Mt., S of Cherokee Rd. 403 Comment
  CHSC66901  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte On the early drying banks of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC85633 Image available Polygonum californicum Mrs. Bidwell July 1876 Butte Chico Comment
  CAS-BOT-BC414368  Polygonum californicum Lowell Ahart 1981-11-6 3216 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC45100  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-9-4 6182 Butte On the bank of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  SEINET10937571  Polygonum hydropiper Lowell Ahart 1985-11-7 Ahart 5234 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
  SEINET10838777  Polygonum kelloggii Mary Susan Taylor 1978-7-19 Taylor 1765 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
  SEINET263346  Polygonum lapathifolium Lowell Ahart 1990-10-3 6613 Butte N side of the East Fork of Canyon Creek below the high water line of Lake Oroville ca 1/8 mi NE of the Canyon Creek br 244 Comment
  CHSC69111  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte Around rocks, near some steamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC113387  Polygonum parryi Lowell Ahart 2014-7-2 19550 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  SEINET10479661  Polygonum parryi Mary Susan Taylor 1980-7-6 Taylor 3066 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  UC849887  Polygonum persicaria A. A. Heller 1916-9-30 12663 Butte hills 8 mi n Oroville Comment
  CHSC44134  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally common in loose, gravelly soil on a scree slope somewhat below the n edge of the ridge. 2097 Comment
  SBBG29156  Polygonum spergulariiforme E. B. Copeland 1931-7-3 Butte Colby Cyn, Jonesville 1550 Comment
  CAS-BOT-BC420998  Polygonum spergulariiforme A. A. Heller 1928-6-20 14681 Butte Near Jonesville Comment
  CAS-BOT-BC71868  Polypodium californicum Lowell Ahart 1980-3-8 2034 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC71871  Polypodium californicum Lowell Ahart 1990-3-19 6419 Butte south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 36 Comment
  CHSC28628  Polypodium calirhiza M. S. Taylor 1979-3-19 1930 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi n of Oroville. 487 Comment
  CHSC39233  Polypodium calirhiza M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5215 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC102416  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 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
  CHSC99322  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS110441  Polypogon interruptus Lowell Ahart 2005-12-11 12520 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  JEPS114960  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  UCD51664  Polypogon interruptus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  CHSC27562  Polypogon maritimus Robert Schlising 1978-5-17 3264 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc road. 670 Comment
  CAS-BOT-BC232571  Polypogon monspeliensis Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  JEPS93847  Polypogon monspeliensis Lowell Ahart 1998-6-9 7991 Butte about 7 air mi n of Oroville (about 200 yards sw of the Ione oak tree, w of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  UC1618880  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte 1.5 mi sse Feather Falls (immediately above Sucker Creek); Sierra Nevada, Plumas Nat'l Forest, Clipper Mills 7.5' Quadr 720 Comment
  CHSC32626  Polystichum imbricans M. S. Taylor; L. Hanson 1981-4-2 3470 Butte S side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC116277  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte On the south side of Forbestown Resevoir, about 400 yards southeast of the Forbestown Resevoir Dam, about 4 miles (air) northeast of Forbestown. 564 Comment
  CAS-BOT-BC72297  Polystichum imbricans subsp. imbricans Clarence R. Quick 1952-7-1 52 -109 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC82489  Polystichum imbricans subsp. imbricans Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9735 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC94838  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House. 609 Comment
  SEINET9625612 Image available Polystichum munitum E. B. Copeland 1931-6-10 s.n. Butte Ridge west of Willow Creek. Vicinity of Jonesville, Lassen National Forest. 503 Comment
  CAS-BOT-BC102692  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte south of the dirt road, about 1/2 miles south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  RSA320498  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Wildlife Refuge, at end of West Liberty Road, ca. 12 miles southwest of Gridley. 19 Comment
  CHSC8768  Potamogeton diversifolius S. Chulasmai 1966-4-15 10 Butte Keefer Rd, up to northern Chico. Comment
  CHSC66688  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1996-7-22 8091 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.2, Sanctuary II. 32 Comment
  RSA754920  Potamogeton pusillus subsp. tenuissimus Robert A. Schlising 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake, in Summit Lake. 1890 Comment
  CHSC45739  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-27 2366 Butte Near creeklet on E slope of Bald Mtn. 1706 Comment
  CHSC45583  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2041 Butte Near PG and E ditch ca 3/4 mi north of DaSAbla Res. at crossing of rd to Forks of Butte (Doe Mill Rd). 853 Comment
  SEINET10483112  Potentilla glandulosa subsp. glandulosa Mary Susan Taylor 1982-5-2 Taylor 4393 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
  CDA6517  Proboscidea louisianica T. C. Fuller, W. T. Parsons 1960-7-25 4865 Butte Highway 99E, ca. 9 miles northwest of Chico. 0 Comment
  RSA0013899  Proboscidea louisianica Aaron Liston, S. Meury 1988-5-28 743 -2 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Road, 1/8 mi. E of Highway 99. 55 Comment
  UCD122113  Proboscidea louisianica subsp. louisianica A. A. Heller 1914-5-30 11467 Butte Chico-Hamilton, 6 miles from Chico. Comment
  UC195448  Proboscidea lutea A. A. Heller 1914-8-20 11685 Butte near Dry Creek (on Oroville-Chico rd 12 mi from Chico) Comment
  CHSC38480  Prunella vulgaris var. lanceolata Vernon Oswald 1983-6-14 686 Butte Upper Bidwell Park, Chico, beside Yahi Trail e of Brown's Hole. 207 Comment
  CHSC52060  Prunella vulgaris var. lanceolata B. Castro; L. P. Janeway, R. A. Schlising 1988-7-11 270 A Butte On edge of Big Kimshew Ck in Crane Valley. 1569 Comment
  CHSC115782  Prunus cerasifera Lowell Ahart 2015-8-21 20522 Butte On the southeast corner of the intersection of Cox Lane and Lone Tree Road, about 10 miles south of Oroville. 32 Comment
  CHSC38930  Prunus cerasifera Vernon Oswald 1983-2-23 93 Butte Upper Bidwell Park, Chico, at the Salmon Hole Parking Area (1.4 mi e of the power lines). Along an intermittent stream. 158 Comment
  CAS-BOT-BC159924  Prunus emarginata Brandegee 1892-9-29 s.n. Butte Jonesville Comment
  HSC60315  Prunus subcordata J. P. Smith, J. O. Sawyer 1973-4-14 6059 Butte Cohasset Comment
  CHSC48869  Prunus virginiana var. demissa Vernon Oswald 1987-4-20 2336 Butte Butte Creek Reserve on the s side of the creek ne of the Skyway. On slope bordering the s edge of the Reserve. 91 Comment
  CHSC28977  Pseudobahia heermannii R. A. Schlising 1980-3-17 3515 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 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
  RSA4440  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 637 Butte Jonesville 1500 Comment
  CHSC25471  Pseudotsuga menziesii var. menziesii Marc Hayes; Warner 1977-9-11 66 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  RSA795638  Pseudotsuga menziesii var. menziesii L. Ahart 2012-2-22 17737 Butte East edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 air miles northeast of Chico. 190 Comment
  SEINET10839136  Psilocarphus brevissimus Mary Susan Taylor 1976-3-23 Taylor 1035 Butte Abundant in Valley Grassland, ca. 1/4 mi N of Pine Creek on Pine Creek-Cana Road, ca. 11 mi N of Chico; with Plagiobothrys scriptus. 61 Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC32597  Psilocarphus oregonus J. D. Jokerst; R. A. Schlising, B. Banchero 1980-4-16 843 Butte 0.1 mi W of the jct of Scout Rd, N of Humboldt Rd, community of Butte Meadows. 1341 Comment
  CAS-BOT-BC361824  Psilocarphus oregonus Lowell Ahart 1970-5-12 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 150 Comment
  JEPS122031  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  JEPS117508  Psilocarphus tenellus var. globiferus Lowell Ahart 2010-5-22 16722 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 387 Comment
  SEINET10602442  Puccinellia pauciflora Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3940 Butte Soda Ridge Rd, 1.5 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. On the edge of a dry snow lake located over a low ridge just n of the marshy, spring-fed lake visible from the road. Comment
  UC474249  Pyrola asarifolia H. F. Copeland 1930-7-27 Butte Jonesville Comment
  CHSC4669  Pyrola picta Renee Carter 1966-6-15 441 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 5 yds off road. 1097 Comment
  CHSC2806  Quercus Carl Pejsa 1958-3-15 99 Butte Bidwell Park Forestry Station. Comment
  UC338404  Quercus Lemmon Butte Bidwell's Comment
  SEINET10833519  Quercus Mary Susan Taylor 1980-5-15 Taylor 2641 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  UC1135512  Quercus berberidifolia J. E. Sowder, C. G. Albertus 1933-6-26 95 Butte 1 mi ne Nelson's Bar on Pentz road; Chico Quad. 457 Comment
  UC847952  Quercus berberidifolia A. A. Heller 1916-9-8 12649 Butte e of Chico (Ten Mile House) Comment
  CAS-BOT-BC62688  Quercus chrysolepis Ella Dales Cantelow 1939-5-19 2436 Butte 17 mi. e of Oroville on old road to Quincy nr. Berry Creek Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 Comment
  CHSC30792  Quercus chrysolepis M. S. Taylor 1980-5-27 2659 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  POM106268  Quercus chrysolepis C. C. Bruce 1898-05 1805 Butte Forest Ranch Comment
  CDA20378  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  CAS-BOT-BC86118  Quercus dumosa H. F. Copeland 1939-8-8 1575 Butte Humboldt Road 12 miles E of Chico Comment
  UCD169291  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 759 Comment
  CHSC30793  Quercus kelloggii M. S. Taylor 1980-5-27 2657 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC75375  Quercus kelloggii Lowell Ahart 1999-6-12 8084 Butte Label says 'T20N R04E S08 SW1/4, close to the border with Section 7'. Above the rim of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 365 Comment
  UC1135696  Quercus kelloggii J. E. Sowder, C. G. Albertus 1933-7-14 114 Butte 1/2 mi w of Fourteen Mile House 335 Comment
  CHSC25455  Quercus lobata Hayes; Warner 1977-9-12 105 Butte Growing along Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  CHSC27951  Quercus wislizeni M. S. Taylor 1979-3-20 1937 Butte Ca. 1 mi n of jct of north fork Feather River, along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC622  Quercus wislizeni var. frutescens M. Roberson 1956-4-7 Butte SW of Paradise along Skyway. 426 Comment
  CAS-BOT-BC379223  Ranunculus aquatilis var. aquatilis Lowell Ahart 1970-4-4 s.n. Butte Honcut, Peter Ahart Ranch 150 Comment
  CHSC20721  Ranunculus aquatilis var. capillaceus M. S. Taylor 1975-8-31 890 Butte On edge of Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  SEINET10536065  Ranunculus aquatilis var. capillaceus Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4183 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  CHSC118580  Ranunculus arvensis L. P. Janeway; B. Castro 2017-4-22 12192 Butte Sacramento Valley. City of Chico; north side of E. 20th Street at Notre Dame Blvd, an area eventually to be developed into houses and businesses. 73 Comment
  CAS-BOT-BC378957  Ranunculus bonariensis Lowell Ahart 1980-4-19 2088 Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC88973  Ranunculus canus Christine Hantelman 2000-3-2 13 Butte In old almond orchard at end of Wookey Road. 112 Comment
  CHSC45753  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 36 Butte N part of county at Crane Valley; in meadow. 1584 Comment
  CHSC53701  Ranunculus hebecarpus Kirsten Tarp 1983-4-3 260 Butte S part of county, sw of Bangor on Bangor Park Rd., roadside. 103 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
  SD48507  Ranunculus occidentalis E. K. Balls 1957-5-22 22518 Butte Sw. shore, Lake Almanor, w. of Big Meadows Dam 1402 Comment
  CHSC41287  Ranunculus occidentalis var. ultramontanus S. C. Morey 1983-7-21 505 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC41518  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-6 329 Butte Ca. 0.9 mi w of Cherry Hill in n part of county. Next to stream. 1414 Comment
  RSA268750  Ranunculus occidentalis var. ultramontanus Lyman Benson 1932-7-28 3968 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC77994  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  UCD149968  Ranunculus uncinatus Harry A. George 1967-4-24 s.n. Butte Table Mtn. Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  SEINET10903216  Rhamnus Mary Susan Taylor 1981-5-15 Taylor 3753 Butte T22N R5E nw sec 29, Berry Creek quad. End of spur rd 22N84A, ridge SW of Stony Creek, ca. 2.5 air mi due E of Jarbo Gap on Feather River Hwy 70. Yellow Pine Forest; 3100 ft. 945 Comment
  CDA35703  Rhamnus californica subsp. californica L. Ahart 2002-6-2 9679 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  CAS-BOT-BC59888  Rhamnus ilicifolia P. Monnet 1913-3-1 683 Butte Feather River Canyon. Oroville. Comment
  RSA2158  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville. 1677 Comment
  CHSC39674  Rhamnus tomentella subsp. tomentella Lowell Ahart 1983-6-21 4100 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville-Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  POM136575  Rhamnus tomentella subsp. tomentella A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  CHSC79727  Rhododendron occidentale G. F. Hrusa; T. D. Wilfred 1997-5-8 13745 Butte Northern California, Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  CAS-BOT-BC111923  Rhynchospora glomerata var. minor Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC1659  Ribes nevadense L. Stone 1930-3-10 Butte Big Chico Creek Canyon near Forest Ranch. 548 Comment
  CHSC81517  Ribes nevadense D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  CHSC62113  Ribes roezlii B. Castro 1987-5-21 118 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Alatina Drive. At edge of dense thicket in bed of ephemeral stream between two S-trending ridges. 463 Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC113450  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC36688  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-16 342 Butte Near small stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  CHSC50027  Rorippa curvisiliqua var. orientalis Lowell Ahart 1990-4-15 6452 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC94165  Rosa bridgesii Lowell Ahart 2006-6-24 12857 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1127 Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CHSC103168  Rosa californica Lowell Ahart 2009-11-19 16542 Butte 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
  CHSC26640  Rosa californica M. S. Taylor 1977-11-10 1533 Butte In Devils Kitchen on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC38649  Rosa californica Vernon Oswald 1983-6-2 600 Butte Upper Bidwell Park, Chico, near the east boundary of the park. On the bank of Chico Creek. 207 Comment
  POM140209  Rosa californica A. A. Heller, H. E. Brown 1902-5-14 5546 Butte Berry Canyon (near Clear Creek) Comment
  UCD40393  Rosa gymnocarpa Rodney Gale Myatt 1971-6-13 718 Butte 1 mile north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  JEPS115698  Rosa pisocarpa Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC87540  Rosa pisocarpa subsp. ahartii R. D. Fischer 2004-5-2 136 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at the end of 10 Mile House Road, near gated property boundary. In meadow, close to a drainage. East side of road, east side of Big Chico Creek. 228 Comment
  CHSC99317  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte Small meadow, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  UC1926779 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC90308  Rosa rubiginosa L. P. Janeway 1994-9-29 4758 Butte Northern High Sierra Nevada. Northeast side of Quartz Hill; overlooking Quartz Creek and Fall River Campground. 1310 Comment
  CDA5119  Rotala indica G. D. Barbe, June McCaskill 1990-9-5 4369 a Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CDA42869  Rubus armeniacus L. Ahart 2012-5-14 18055 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC111371  Rubus armeniacus Lowell Ahart 2012-5-14 18055 Butte On dry deep soil, just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. 74 Comment
  JEPS113170  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 685 Comment
  CDA3944  Rubus laciniatus L. Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. Comment
  SEINET10483573  Rubus laciniatus Mary Susan Taylor 1980-5-8 Taylor 2606 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SEINET10483574  Rubus laciniatus Mary Susan Taylor 1980-2-17 Taylor 2362 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC45818  Rubus parviflorus L. P. Janeway 1987-5-10 2037 Butte Creeklet on east slope of Butte Cr cyn, along road towards Forks of Butte from SE (Doe Mill Rd 0.5 mi SE of the bridge). 701 Comment
  CHSC46054  Rubus parviflorus L. P. Janeway 1987-5-28 2110 Butte Creek bed crossing side rd (23N12Y) 0.3 mi from Four Trees Rd and 1.6 mi W of OroQuincy Hwy. 1478 Comment
  CHSC65434  Rubus pensilvanicus Vernon Oswald 1987-4-15 2329 Butte Dredger tailings on the w side of Hwy 99 ca. 0.5 mi n of Butte Creek Bridge. 65 Comment
  SEINET10483605  Rubus procerus Mary Susan Taylor 1978-7-21 Taylor 1820 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC26637  Rubus ursinus M. S. Taylor 1977-11-12 1538 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  JEPS115605  Rubus ursinus Lowell Ahart 2009-5-23 15736 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
  UCD89071  Rubus ursinus Lindsay Clark 2008-5-30 BWP 22 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 89 Comment
  UC600493  Rumex acetosella H. F. Copeland 1929-6-10 Butte Jonesville Comment
  CAS-BOT-BC421733  Rumex conglomeratus Lowell Ahart 1982-6-27 3653 Butte About 2 1/4 miles north and 1/4 mile east of Honcut, Peter Ahart Ranch 50 Comment
  CHSC109151  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 12, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  JEPS94904  Rumex obtusifolius Lowell Ahart 1998-7-1 8034 Butte about 7 air mi n Oroville (e of cow chute and on e side of Cherokee Rd.); North Table Mountain 403 Comment
  JEPS115663  Rumex pulcher Lowell Ahart 2009-5-30 15798 Butte About 80 yards south of the gate, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UC600492  Rumex salicifolius var. triangulivalvis H. F. Copeland 1932-8-17 Butte Butte Creek Jonesville 1500 Comment
  SEINET10871638  Rumex triangulivalvis var. oreolapathum Lowell Ahart 1984-6-8 Ahart 4675 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC113375  Sagina apetala Lowell Ahart 2014-4-15 19354 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC36956  Sagina apetala M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4365 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC42737  Sagina apetala Lowell Ahart 1987-5-6 5515 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC98975  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UC392230  Sagittaria cuneata E. B. Copeland 1929-7-28 Butte near Butte Creek House (Jonesville); , near Butte Creek House 533 Comment
  CAS-BOT-BC445799  Sagittaria montevidensis Lowell Ahart 1987-10-20 5918 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
  CAS-BOT-BC102800  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  JEPS107337  Salix exigua Lowell Ahart 2005-4-2 11696 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
  JEPS119562  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS119585  Salix gooddingii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17866 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  SD130407  Salix lemmonii John Thomas Howell 1967-5-9 42240 Butte Canyonside on northwest side of Feather River near Pulga Bridge Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  UC446427  Salix lemmonii E. B. Copeland 1931-6-11 Butte Kirby's <Beadow> 1800 Comment
  CHSC42542  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5684 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  UC463019  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  UC478534  Salix scouleriana E. B. Copeland 1931-7-30 399 Butte Jonesville 1550 Comment
  JEPS116659  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Chico Chico (north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road); Sacramento Valley 63 Comment
  CDA42945  Salsola tragus L. Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. Comment
  CAS-BOT-BC221113  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte Forest Ranch 822 Comment
  SEINET11994764  Samolus floribundus Unknown 1984-1 4762 Butte ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville, Peter Ahart Ranch, along North Honcut Creek 50 Comment
  CDA31962  Sanguisorba minor subsp. muricata L. Ahart 2009-5-23 15732 Butte On the 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. Comment
  POM82757  Sanicula bipinnata C. C. Bruce 2059 Butte [Unspecified] Comment
  UCD127999  Sanicula bipinnata Edw Mckinney 1929-6-19 s.n. Butte Honcut. Comment
  CHSC1977  Sanicula bipinnatifida A. Goekler 1929-3-24 Butte Richardson Springs road. 152 Comment
  CHSC2820  Sanicula bipinnatifida David Prall 1965-3-14 7 Butte At edge of cliff 30 yds. south of Neal Rd. 1 mile east of HW 99E. 106 Comment
  JEPS43475  Sanicula bipinnatifida Joan O. Danielson 1966-4-6 26 Butte Cherokee Rd past Oregon Gulch Road 609 Comment
  CAS-BOT-BC223243  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Near Paradise Comment
  CHSC1981  Sanicula bipinnatifida var. flava P. Delaplane 1965-5-4 59 Butte At E end of Lake Concow on Concow Road. 1219 Comment
  CHSC42094  Sanicula graveolens Lowell Ahart 1986-7-2 5345 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  CHSC31002  Sanicula tuberosa M. S. Taylor; R. Schlising 1980-7-6 3079 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows. 1341 Comment
  CHSC65441  Sanicula tuberosa L. P. Janeway 1995-5-18 4763 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1106 Comment
  CAS-BOT-BC328133  Santolina chamaecyparissus T. C. Fuller 1967-9-25 16411 Butte Town of Brush Creek, Oroville-Quincy Highway, Sierra Nevada 1042 Comment
  UC600619  Saxifraga odontoloma H. F. Copeland 1932-8-19 Butte se of head of Butte Creek; Jonesville, Butte Creek 2100 Comment
  SEINET10483047  Saxifraga oregana Mary Susan Taylor 1977-7-15 Taylor 1406 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC43658  Scabiosa atropurpurea Vernon Oswald 1983-7-24 907 Butte Boat ramp, Bidwell State Park, on River Rd. w of Chico near the washout. Comment
  CHSC39358  Sceptridium multifidum L. Ahart; P. Ahart 1983-9-21 4462 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  RSA500434  Schoenoplectus subterminalis Vernon H. Oswald, L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd. 1.4 miles W of its jct with Coon Hollow Rd, 1.2 airmiles N of Philbrook Reservoir. 1753 Comment
  SEINET13711019  Scirpus cernuus Lowell William Ahart, Lowell William Ahart 2000-1 8390 Butte 12 Air Mi. SSE of Oroville (T17N, R4E, sec 11, SE 1/4) 130 Ft. 40 Comment
  CHSC56800  Scirpus congdonii L. P. Janeway 1986-9-1 1831 Butte Near wet meadow and willows at east end of Philbrook Reservoir. 1691 Comment
  CDA2622  Scirpus glaucus Margaret Bellue 1947-8-23 Butte Barman Ranch, near Biggs. 0 Comment
  JEPS110323  Scirpus microcarpus Lowell Ahart 2006-7-25 13061 Butte In the west part 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
  CDA39129  Scirpus mucronatus Margaret Bellue Aug 1947 s.n. Butte Afton Road, near Biggs. 0 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
  CHSC29300  Scribneria bolanderi J. D. Prouty 1980-4-25 80 .81 Butte N of Serene Lane ca. 3 mi. s of Oroville. 82 Comment
  CHSC1900  Scrophularia californica subsp. floribunda L. Oliver; D. Sloan 1935-4-20 Butte Feather River Canyon. Comment
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  CAS-BOT-BC425114  Scutellaria austiniae Mrs. C. C. Bruce 1897-5-1 1835 Butte Big Chico Comment
  CHSC52200  Scutellaria californica L. P. Janeway 1988-6-19 2819 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/ firebreak along powerline (3-wire, wooden poles). 274 Comment
  CHSC102849  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 436 Comment
  CHSC51234  Scutellaria siphocampyloides Lowell Ahart 1977-5-20 1388 Butte Growing on the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  CAS-BOT-BC416976  Sedella pumila Herbert L. Mason 1941-4-6 12409 Butte Three miles S of Chico near junction of road to Paradise 91 Comment
  SD67709  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville Road, ca. 7.0 miles from Chico. Comment
  UCSB63722  Sedella pumila Webster, Steven 1986-4-6 Butte Ca. 4.5 mi. E of Chico; Chico Quadrangle, SW1/4, NE1/4, Sect. 22, T22N, R2E, MDM 167 Comment
  CHSC32684  Sedum albomarginatum M. S. Taylor; D. Hemphill 1981-3-18 3418 Butte N side of Pulga Rd, at its jct with Hwy 70 at Pulg ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  CAS-BOT-BC59135  Sedum spathulifolium Lewis S. Rose 1963-6-2 63075 Butte 2 miles South of Pulga, North Fork Feather River. 579 Comment
  CHSC100794  Selaginella wallacei Lowell Ahart; John Dittes, Steve Green 2009-1-17 15473 Butte Large rock on the south side of Guardian Rock Trail, about 20 yards west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 321 Comment
  CAS-BOT-BC69775  Selaginella wallacei Gladys L. Smith 1976-6-5 4543 Butte At Selaginella Cliff. Rte. 70 Feather River Canyon. 548 Comment
  HSC78629  Selaginella wallacei L. P. Janeway 1984-10-8 1180 Butte Along Hwy. 70, along N fork of Feather River 488 Comment
  CHSC89479  Senecio eurycephalus var. eurycephalus Jenny Marr 1994-7-6 210 Butte Located in the mountains above Oroville off Forbestown Reservoir Road. 883 Comment
  CHSC86442  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 94 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  LA204252  Senecio integerrimus var. major E. B. Copeland; 1929-7-14 498 Butte Jonesville 502 Comment
  CHSC101142  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC87434  Senecio sylvaticus R. D. Fischer 2004-4-5 97 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near drainage at bottom of Pine Trail, near the junction of Guardian Trail. 396 Comment
  JEPS119561  Senecio sylvaticus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UCD135758  Senecio sylvaticus Robert E. Preston 1988-5-4 590 Butte 6 miles north of Oroville, on Table Mountain. 396 Comment
  CHSC45769  Senecio triangularis Vernon Oswald 1983-6-22 740 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. Beside Chico Creek. 1112 Comment
  CHSC3243  Sequoia sempervirens Virginia Hagaman 1966-2-21 24 Butte Chico State College Campus. Comment
  CHSC113120  Sequoiadendron giganteum Lowell Ahart 2013-10-26 19206 Butte On the east side of the Bald Mountain Lookout, Bald Mountain. 2066 Comment
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Jul 25 2018
  SEINET10872005  Sericocarpus oregonensis subsp. californicus Mary Susan Taylor 1980-9-12 Taylor 3328 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC46981  Setaria parviflora Vernon H. Oswald 1989-9-19 4012 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in s Chico. Along Comanche Creek. 68 Comment
  JEPS124335  Setaria parviflora Lowell Ahart 2015-10-16 20558 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA0060809  Setaria pumila Lowell A. Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CAS-BOT-BC240190  Setaria viridis John Thomas Howell 1975-6-15 51062 Butte Chico 60 Comment
  CHSC109002  Sherardia arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte On the north side of the path,near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC29016  Sherardia arvensis M. S. Taylor; J. D. Jokerst 1980-4-4 2462 Butte On W side of La Porte Rd, ca. 2 mi N of Bangor. 335 Comment
  JEPS119993  Sherardia arvensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte Near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  UCD18736  Sherardia arvensis Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 29 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC84901  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7813 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC21070  Sidalcea calycosa M. S. Taylor 1975-10-4 956 Butte On s side of creek entering ne corner of Kinkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC29408  Sidalcea calycosa R. A. Schlising 1980-6-22 3753 Butte Several mi S of village of Cohasset. 441 Comment
  UC108881  Sidalcea diploscypha K. Brandegee May 1883 Butte Comment
  CHSC113405  Sidalcea gigantea Lowell Ahart 2014-7-2 19541 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC34957  Sidalcea glaucescens R. Schlising; R. Banchero 1980-8-1 3960 Butte E of Philbrook Lake, 4.3 mi E of Skyway. Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  CHSC103746  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC20407  Sidalcea hartwegii C. Glascock 1965-5-16 383 Butte At crest of hill above Oro-Bangor Hwy, 1/2 mi. e on Foothill Blvd, Oroville. Comment
  HSC87160  Sidalcea hartwegii S. T. Heaston 1982-4-8 17 Butte SE of Chico, 7 mi. SE of the junction of Hwy. 99 and Skyway, 100 m S off of Skyway 305 Comment
  POM84282  Sidalcea hartwegii C. C. Bruce 1897-05 1873 Butte Forest- Ranch. Comment
  SEINET11987372  Sidalcea hartwegii Unknown 1974-1 16 Butte Skyway Rd, E ca 2 mi from connection with Hwy 99 61 Comment
  CHSC71183  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 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
  JEPS107752  Sidalcea hirsuta Lowell Ahart 2005-5-11 11792 Butte In deeper vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  UC398687  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte nine mi n Chico; n of Chico Comment
  SEINET11971666  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-1 19536 Butte Oroville-Forbestown Rd, about 8 mi E of Oroville Comment
  POM219179  Sidalcea oregana subsp. spicata H. F. Copeland 334 Butte Jonesville. 1524 Comment
  UC478499  Sidalcea oregana subsp. spicata E. B. Copeland 1930-7-15 659 Butte Jonesville 1500 Comment
  CDA30191  Silene antirrhina L. P. Janeway, David Toren, Heather Koeth, Duryea Delacroix 2008-6-11 9406 Butte Northern Sierra Nevada Foothills; Plumas National Forest; along French Creek Road about 3.0 road km northeast of Oroville-Quincy Hwy and 1.0 air km west of Mountain House; slopes east above Mosquito Creek. Old road cutbank. Comment
  CHSC39045  Silene bridgesii R. A. Schlising; K. Tarp 1983-7-22 4428 Butte E part of county, se of Brush Creek along Milsap Bar Road. 975 Comment
  UC455230  Silene californica Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA477839  Silene californica M. Vincent 1962-4-16 198 Butte Pentz Road, small reservoir 1/4 mile off road 5 miles S of Paradise. Comment
  SEINET5337144  Silene californica R. T. Short 1959-4-11 13 Butte 15 miles east of Oroville on US 40. 549 Comment
  CHSC11054  Silene gallica Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC87537  Silene gallica R. D. Fischer 2004-4-20 131 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail, north of Disk Golf Course and prior junction of Bloody Pin Trail. 274 Comment
  CHSC99664  Silene gallica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  CAS-BOT-BC387068  Silene gallica Lowell Ahart 1988-5-1 5974 Butte North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC4206  Silene laciniata subsp. californica J. Senter 1967-4-17 24 Butte Located ca. 4 mi. from Horseshoe Lake on north bank off upper Bidwell Rd. 91 Comment
  CAS-BOT-BC389009  Silene laciniata subsp. californica Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CAS-BOT-BC389014  Silene laciniata subsp. californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 28 Butte NW of Paradise on Honey-Run Rd, 2.5 miles down from canyon rim 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
  CHSC38388  Silybum marianum Vernon Oswald 1983-4-18 329 Butte Upper Bidwell Park, Chico, on the north slope w of Horseshoe Lake. Beside an old jeep trail. 109 Comment
  CAS-BOT-BC135398  Sisyrinchium John Thomas Howell 1962-6-15 37518 Butte Magalia - Sierra Nevada 731 Comment
  UC143528  Sisyrinchium bellum Mrs. R. M. Austin July, 1896 34 Butte Colby Comment
  SEINET10905129  Smilacina racemosa Mary Susan Taylor 1981-5-21 Taylor 3783 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC76422  Solanum americanum Lowell Ahart 1999-10-28 8319 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
  JEPS95810  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  NY821123  Solanum parishii Mrs. C. C. Bruce 05 1898 1872 Butte Little Chico Comment
  CHSC62626  Solanum rostratum Patrick E. Kelly 1994-2-10 Butte N side of Doe Mill Rd. just E of Butte Creek Diversion in S Chico. 83 Comment
  CDA6222  Solanum scabrum W. Sauer, L. Heinricks 1974-9-11 Butte Stirling City. 0 Comment
  SEINET12321224  Solanum umbelliferum Unknown 1890-1 s.n. Butte no further locality Comment
  SEINET10971230  Solidago californica Mary Susan Taylor 1979-10-5 Taylor 2234 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC64039  Solidago elongata S. C. Morey 1983-8-4 718 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS94143  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte ca. 7 mi. (air) n. Oroville (in tracks of dirt rd. ca. 5.8 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
  CAS-BOT-BC365837  Soliva sessilis John Thomas Howell; Gordon H. True 1967-5-7 42181 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CAS-BOT-BC365983  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC109152  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  JEPS115664  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By a small rock about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC49689  Sparganium emersum subsp. emersum Vernon Oswald 1987-6-23 3017 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. In a gravel pit. 1889 Comment
  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
  JEPS118633  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC78139  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 6388 Butte On the bottom of a small wash, about 100 yards southeast of the barn, about 1/4 mile northeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  CHSC91098  Spergularia bocconi Lowell Ahart 2005-5-28 11827 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  JEPS115355  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC390128  Spergularia bocconi Lowell Ahart 1989-5-23 6244 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CAS-BOT-BC390599  Spergularia rubra Lowell Ahart 1985-5-10 4942 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville 450 Comment
  CHSC28745  Sphenosciadium capitellatum M. Banchero 1979-9-2 33 Butte Streamside in large meadow near Humboldt Road crossing of Butte Creek, 8.1 mi NE jct Hwy 32. Comment
  CHSC109084  Spiraea Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  NY415778  Stachys ajugoides A. A. Heller 1914-7-23 11592 Butte Chico Meadows 1219.2 Comment
  JEPS115567  Stachys ajugoides var. rigida Lowell Ahart 2009-5-23 15760 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC43646  Stachys pycnantha B. Castro 1987-9-12 219 Butte At w edge of Butte Ck, ca 24 mi ne of Chico via Hwy 32, Garland Rd and the Butte Ck Trail. On cliff ca 50' from water's edge. 585 Comment
  UC2055635  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  UCD80405  Stachys rigida CNPS SN Foothill Team 2005-5-25 SNFN 0170 b Butte City of Chico, about 300 m south of northern boundary of Upper Bidwell Park, on the east side of Big Chico Creek. 278 Comment
  CHSC48274  Stellaria calycantha Vernon Oswald 1987-7-13 3115 Butte Near the intersection of a Forest Service road and the sw branch of Butte Creek, ca. 1 mi (air) se of Summit Lake, ca. 1 mi (air) e of Snow Mt, ca. 4.75 mi (air) se of Jonesville. In bed of a streamlet. 1853 Comment
  CHSC113463  Stellaria crispa Lowell Ahart 2014-7-16 19689 Butte Along the south edge of a large wet meadow (some bog), about 110 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10965515  Stellaria longipes Mary Susan Taylor 1981-5-14 Taylor 3729 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  CAS-BOT-BC391088  Stellaria longipes subsp. longipes H. F. Copeland 1920-8-1 190 Butte Jonesville 1219 Comment
  CHSC231  Stellaria media M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC38306  Stellaria nitens Vernon Oswald 1983-3-4 111 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. 2.4 mi e of the power lines. 256 Comment
  UC1609205  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 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
  CHSC11854  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville. On gravel bars by Butte Creek. 1500 Comment
  UC1745626  Stephanomeria virgata subsp. pleurocarpa Annetta M. Carter 1945-9-30 1733 Butte Feather River highway above Oroville.; ; Feather River highway above Oroville. Comment
  UCD163017  Streptanthus diversifolius D. O. Burge 2013-4-12 1389 Butte North Table Mountain, Campbell Creek watershed, just west of Oregon City, accessed via Cherokee Road, parking 5.8 road miles (9.3 km) south of intersection with SR 70. 400 Comment
  CAS-BOT-BC87387  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CHSC93960  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC36133  Streptanthus tortuosus Thomas A. Welgan 1979-4-15 2 Butte Ca. 6 mi n of Oroville and w of Cherokee Mountain Rd 0.5 mi. Field. 365 Comment
  UC956623  Streptanthus tortuosus Freed W. Hoffman 1949-5-14 2779 Butte crest of mt Table Mountain (on road to Oroville) 335 Comment
  JEPS117225  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2010-5-16 16695 Butte Basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  RSA32715  Streptanthus tortuosus var. suffrutescens A. A. Heller 1938-4-14 15031 Butte Treeless summit of Table Mtn. Comment
  CHSC49665  Streptopus amplexifolius var. americanus Vernon Oswald 1987-6-29 3043 Butte High Rock Ravine just upstream from a logging road ca. 1 mi (air) w of Bald Mt. Lookout. 1389 Comment
  SBBG119858  Swertia albicaulis var. nitida L. Ahart 2003-7-20 10435 Butte S side of Bean Crk Rd, ca. 1/8 mi N of Little Bald Rock, ca. 2 air mi SE of Brush Crk 987 Comment
  UC29849  Symphyotrichum bracteolatum H. E. Brown Nov 15 1896-Nov 30 1896 80 Butte near Clear Creek 53 Comment
  CHSC40562  Symphyotrichum chilense Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CAS-BOT-BC98088  Symphyotrichum spathulatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  CHSC65418  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1983-8-17 978 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the Hct. of Colby, Willow, and Butte creeks. 1493 Comment
  CHSC69674  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1989-8-29 3973 Butte Butte Creek near its junction with Colby and Willow Creeks, just upstream from the bridge on Humboldt Rd, ca. 1 mi W of Jonesville. 1487 Comment
  CAS-BOT-BC98327  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1974-11-12 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UCD86175  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37484 Butte Magalia. 731 Comment
  CHSC35305  Tamarix gallica R. Ondricek 1977-10-16 Butte Ca. 1 mile from Richardson Springs turnoff on Cohasset Hwy, N of Chico Comment
  CDA13257  Tanacetum parthenium G. F. Hrusa, T. D. Wilfred 1996-7-9 13108 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC4203  Taraxacum officinale J. Wheeler 1967-5-20 28 Butte In lawn at 248 Serviss St. Durham. Comment
  SEINET11793729  Taraxacum officinale Unknown 1966-1 37 Butte Chico, East 5th & Olive Streets Comment
  UCD128108  Tauschia hartwegii Joe Connell 2003-5-5 s.n. Butte Yankee Hill. 1500-2000 ft. Comment
  SEINET10454615  Tauschia kelloggii Mary Susan Taylor 1980-5-8 Taylor 2604 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC27970  Thalictrum fendleri M. S. Taylor 1978-7-19 1758 Butte On w side of Upper Scotts John Rd, ca. 3 1/2 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  UC480871  Thalictrum fendleri var. polycarpum R. M. Austin July 1896 654 Butte Colby Comment
  POM100481  Thalictrum polycarpum C. C. Bruce 1897-05 s.n. Butte Big Chico. Comment
  CAS-BOT-BC197364  Thinopyrum intermedium subsp. barbulatum M. S. Taylor 1978-7-21 1835 Butte In Big Bald Rock parking lot 997 Comment
  CHSC90919  Thlaspi arvense Lowell Ahart 2005-4-18 11745 Butte On the east side of Seven Mile Lane, about 1 mile north of the intersection of Seven Mile Lane and Nelson West Road. 31 Comment
  CAS-BOT-BC88206  Thysanocarpus curvipes A. A. Heller 1919-3-29 13095 Butte Feather River near Yankee Hill. Comment
  CAS-BOT-BC88213  Thysanocarpus curvipes Lowell Ahart 1970-3-10 s.n. Butte Peter Ahart Ranch, Ho