Search Results — 2000 specimen records retrieved (1612 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3266  Acer buergerianum M. L. Hillier 1966-2-4 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CAS-BOT-BC330624  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC11866  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville, Butte County, (along streams down to 1500 m.). 2100 Comment
  CHSC24892  Acer macrophyllum E. Rilla 1976-4-4 2 Butte ca. 10 mi w of junc of Ponderosa Way and Hwy 32, ca. 3 ft n of Ponderosa Way, ca. 22 mi ne of Chico. 609 Comment
  UC726475  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Feather River near Stirling; Feather River near Stirling 975 Comment
  CAS-BOT-BC210630  Achnatherum lemmonii Lowell Ahart 1987-5-22 5663 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-BC216462  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  CHSC84411  Achnatherum stillmanii Lowell Ahart 2003-7-20 10434 Butte West of gate of Bald Rock Dome, Forest Road 21N27Y, east of Bean Creek Road, about 1/2 mile east of Little Bald Rock, about 2 1/8 miles (air) southeast of Brush Creek. 1032 Comment
  CAS-BOT-BC29945  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 miles north of Oroville Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  CHSC78250  Acmispon americanus var. americanus Lowell Ahart 2000-6-27 8525 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line,about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS121914  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA0116257  Acmispon americanus var. americanus Lowell A. Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  UCD103808  Acmispon americanus var. americanus A. A. Heller 1916-9-8 12651 Butte Ten mile house east of Chico. Comment
  CHSC40913  Acmispon argophyllus var. fremontii Lowell Ahart 1977-4-28 1324 Butte About 1 mile north-east of the Ponderosa Dam, north of Forbestown. 457 Comment
  CAS-BOT-BC204848  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, abou 3 1/2 miles south-west of Pulga 365 Comment
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC43416  Acmispon brachycarpus Lowell Ahart 1977-4-28 1322 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 4 miles north-west of Forbestown. 457 Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  UCD95295  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  UC600485  Actaea rubra E. B. Copeland June, 1930 Butte near Butte Creek Jonesville 1550 Comment
  SEINET10473552  Adenocaulon bicolor Mary Susan Taylor 1976-5-5 Taylor 1120 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC90134  Adiantum jordanii Stacy Scott 1981-4-24 6 Butte 1.6 km east of Manzanita Ave. and Centennial Ave. intersection on Centennial Ave.; about 3.1 km east of Chico. Along roadside. 97 Comment
  POM120400  Adiantum jordanii R. M. Austin 1882-10 49 Butte Unspecified Comment
  UC42033  Adiantum jordanii Miss E. P. Patton Dec. 1879 Butte near Fall River Fall River Comment
  CHSC98333  Aegilops triuncialis L. P. Janeway; B. Castro 2007-5-19 8978 Butte Cascade Range Foothills. Bottom of un-named drainage on southesast side of Neal Road, 2.9 air km northeast of Hwy 99, approximately under the high power lines. On the lowest terrace above the dry dreek; dry hard clay soil, Tuscan Mudflow outcrops (volcanic) above. 88 Comment
  UCD51548  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA458170  Aesculus californica M. M. Boney 1897-1 4217 Butte [No location information on label.] Comment
  SEINET12236158  Aesculus californica Unknown 1978-1 18 Butte Cherokee quadrangle, Upper Miocene Canal 448 Comment
  CHSC37259  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC90943  Agoseris heterophylla Lowell Ahart 2005-4-18 11730 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
  CHSC83884  Agoseris heterophylla var. cryptopleura Lowell Ahart 2003-4-10 10053 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
Read comments
Jan 19 2011
  SEINET10475109  Agoseris retrorsa Mary Susan Taylor 1980-5-27 Taylor 2724 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC50700  Agrostis avenacea Lowell Ahart 1990-5-25 6492 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. 259 Comment
  CHSC49500  Agrostis capillaris Vernon Oswald 1984-7-31 1640 Butte Humboldt R. at the Willow Creek-Colby Creek bridge. 1487 Comment
  CHSC40447  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  HSC96918  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, 12 mi. SE of Oroville 35 Comment
  CAS-BOT-BC127366  Agrostis exarata Lowell Ahart 1981-7-7 2916 Butte Sierra Nevada. Bottom of dry stream bed, ca. 1 mile south of the Oroville Forbestown Road on the Hureleton Sweeds Flat Road. 600 Comment
  CHSC112058  Agrostis exarata B. Castro 2012-10-18 1991 Butte Sacramento Valley. At N end of Chico, just S of the Chico Air-port, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC47697  Agrostis exarata Lowell Ahart 1989-9-21 6397 Butte Along the west edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  CAS-BOT-BC139719  Agrostis gigantea Lowell Ahart 1987-6-9 5731 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC127540  Agrostis hendersonii Lowell Ahart 1985-5-22 5029 Butte Along the edge of Bean Creek Road, about 0.5 mile southeast of Little Bald ROck. 1066 Comment
  CAS-BOT-BC139435  Agrostis hyemalis H. S. Yates 1936-8-13 6109 Butte 2.5 miles south southeast of Butte Meadows. 1493 Comment
  CAS-BOT-BC139437  Agrostis hyemalis A. A. Heller 1914-7-23 11613 Butte In Chico Meadows. 1219 Comment
  CAS-BOT-BC139438  Agrostis hyemalis A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC1130671  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadows Paynes Creek Quadrangle Comment
  CAS-BOT-BC138770  Agrostis scabra Lowell Ahart 1984-7-19 4738 Butte About 1.5 mile southeast of Bald Mountain, 0.75 mile west of Oak Point, about 4 miles northeast of Stirling City. 1500 Comment
  SEINET11688338  Agrostis scabra L. Ahart, Ahart, P. 1984-1 4738 Butte ca 1.5 mi SE of Bald Mountains, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC26663  Agrostis stolonifera M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1493 Butte On n side of John Rd, ca. 4.8 mi s of its jct with Old Humboldt Rd, above Jonesville. 1981 Comment
  CHSC105685  Agrostis thurberiana Lowell Ahart 2010-9-21 17214 Butte Open meadow-like area, 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
  CHSC29993  Aira elegans L. Ahart 1980-4-13 2079 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10510827  Aira elegantissima Watts 1974-5-1 Watts 30 Butte Found un upper Bidwell Park, Chico, near Horseshoe Lake. Comment
  RSA0058867  Albizia julibrissin Lowell A. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 31 Comment
  CHSC111731  Alisma triviale Lowell Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC30980  Allium amplectens M. S. Taylor; R. Schlising, L. Ahart 1980-5-31 2754 Butte Kunkle Reservoir, on e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  SEINET12046811  Allium amplectens D. D. Schultz 1975-1 10 Butte .9 mi N of intersection of Bruce Rd. and E. Park Ave 70 Comment
  SEINET3884197  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge.; 0 518 Comment
  UCD138478  Allium amplectens Eric D. Osman 1978-4-22 3 Butte ca. 5 miles ENE of Chico and 50 feet south of Hwy 32 and Humbolt Road junction. 243 Comment
  CHSC3325  Allium cratericola M. Gregg 1966-3-28 58 Butte On Cherokee Rd. to the top of Table Mt. North of Oroville. Comment
  UC725435  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit of Table Mountain Table Mountain 304 Comment
  HSC66340  Allium cratericola M. S. Taylor, Jim Jokerst 1980-4-27 2563 Butte Table Mtn. 5 mi. N of Oroville 610 Comment
  SEINET7073604  Allium crispum 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
Read comments
Jul 16 2018
  CHSC36953  Allium membranaceum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3761 Butte 0.6 mi W of Forbestown, along Forbestown Road. 902 Comment
  SEINET12052476  Allium membranaceum F. W. Hoffman 1952-1 4071 G.N. 950 Butte Ponderosa Road, 0.5 mi from Magalia-Mosquito Creek Road & 0.6 mi above West Branch of Feather River Comment
  CHSC96417  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC28136  Allium peninsulare J. D. Jokerst 1979-4-25 204 Butte 200 m. se of intersection Rock Creek Road and Cohasset Hwy. 146 Comment
  CHSC49704  Allium peninsulare var. peninsulare Vernon Oswald 1985-5-6 1744 Butte Concow Rd. 1.1 me sw of its jct. With Ponderosa Way. 853 Comment
  CHSC63542  Allophyllum divaricatum Vernon H. Oswald 1994-4-14 6108 Butte Old railroad grade along the N. Fork Feather River just E of Chino Creek, E of Poe Powerhouse. 301 Comment
  CAS-BOT-BC171273  Alnus incana subsp. tenuifolia H. F. Copeland 1929-6-12 s.n. Butte Jonesville, beside Jones Creek 1524 Comment
  CHSC102996  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  SEINET269930  Alnus rhombifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows 1219 Comment
  HSC97201  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  JEPS87188  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte ca. 2 mi. w. Biggs (on s. side of Biggs Princeton Rd.) 30 Comment
  SEINET10790510  Alopecurus carolinianus Lowell Ahart 1990-4-15 Ahart 6450 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. T19N R6E nw/S6. Foothill woodland (destroyed). Carolina Foxtail. 290 Comment
  RSA768997  Alopecurus saccatus L. Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 372 Comment
  JEPS124258  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  CHSC80575  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the 'Deer Pen', Chico. 60 Comment
  CDA3281  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC94650  Amaranthus retroflexus Lowell Ahart 2006-9-28 13365 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
  RSA29939  Amaranthus retroflexus I. L. Wiggins 1928-9-9 3345 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC76263  Amaranthus rudis Lowell Ahart 1999-9-21 8266 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC105790  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  UCR219095  Ambrosia psilostachya George K. Helmkamp, E. A. Helmkamp 2009-9-5 15572 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  JEPS95918  Ammannia robusta Lowell Ahart 1999-8-13 8168 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
  CHSC3572  Amsinckia intermedia R. D. Briggs 1966-3-2 49 Butte Salmon Hole', 4 miles above the Bidwell Park golf course. 106 Comment
  CHSC38269  Amsinckia intermedia Vernon Oswald 1983-2-9 64 Butte Upper Bidwell Park, Chico, on the North Rim ca 0.8 mi e of the power line. 320 Comment
  JEPS108850  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 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
  CHSC139  Amsinckia menziesii var. menziesii 1949-5-22 Butte Near Sacramento River. 54 Comment
  CHSC10561  Anagallis arvensis Lowell Ahart 1970-4-22 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115329  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along the 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
  CHSC31625  Andropogon virginicus var. virginicus L. Ahart 1973-11-1 286 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC72745  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  JEPS98278  Anthoxanthum odoratum Lowell Ahart 2000-6-29 8539 Butte On the northwest side of Concow Road at Flea meadow, about .5 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET10873865  Anthriscus scandicina Mary Susan Taylor 1975-4-25 Taylor 497 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
  CHSC38640  Aphanes occidentalis Vernon Oswald 1983-3-7 133 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 0.1 mi. w of the power lines. 128 Comment
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC96236  Aphyllon purpureum R. Fischer 2006-4-10 991 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  CHSC44152  Apocynum androsaemifolium V. Oswald; L. Ahart 1988-7-29 3638 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC38261  Apocynum cannabinum Vernon Oswald 1983-8-19 1009 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC55470  Apocynum cannabinum L. P. Janeway 1991-6-8 3997 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. 411 Comment
  POM75789  Apocynum cannabinum C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  CHSC1432  Aquilegia formosa var. truncata E. Walker 1932-5-9 Butte Feather River Canyon. 609 Comment
  CHSC52193  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 297 Butte E part of county, near Milsap Bar. 548 Comment
  JEPS119576  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  SEINET10448429  Arabis sparsiflora var. arcuata Lowell Ahart 1983-5-28 Ahart 4017 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC102997  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC45300  Arceuthobium abietinum Vernon Oswald 1987-6-14 2999 Butte Near Humboldt Rd. at the w boundary of Lassen National Forest between Butte Meadows and Cherry Hill. 1389 Comment
  CAS-BOT-BC407772  Arceuthobium californicum Clarence R. Quick 1953-7-1 53 -32 Butte Big Bar Mountain, ridge E of Pulga Comment
  POM354297  Arceuthobium campylopodum E. B. Copeland 1928-8-18 759 Butte Neighborhood of Jonesville. Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CHSC24702  Arctostaphylos J. R. Nelson 1976-3-1 5 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  SEINET11986400  Arctostaphylos manzanita Unknown 1977-1 15 Butte 16 mi NW of Chico on Cohasset Rd 10 yds W of roadside rocky soil 518 Comment
  CHSC3509  Arctostaphylos manzanita subsp. manzanita M. Gregg 1966-2-21 17 Butte On Neal Rd. down from Paradise. 1/2 mile above the water fountain ('water fountain' = probl. Elliot Spring House; M. S. Taylor 1/2/81). 304 Comment
  LA42197  Arctostaphylos mewukka C. B. Wolf; 1937-3-29 8340 Butte Sierra Nevada foothills, 3.5 mi. below Magalia on Oroville Road 487 Comment
  UC725908  Arctostaphylos mewukka A. A. Heller 1942-1-18 16351 Butte two mi below De Sabla Comment
  UCD22541  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mile NE of Swain Hill, 1 mile WSW of Quartz Hill, 50 ft. east of Grubbes Creek Road. 1219 Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  JEPS109967  Arctostaphylos mewukka subsp. truei Dean W. Taylor 2006-7-12 19564 Butte Swain Hill; northwest flank along County Road 47 1158 Comment
  CAS-BOT-BC45569  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC48372  Arctostaphylos nevadensis Vernon Oswald 1983-8-17 994 Butte On Humboldt Peak, NE of Jonesville. 2158 Comment
  UC478486  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte ridge e the Summit; Jonesville 2100 Comment
  SBBG28835  Arctostaphylos nevadensis subsp. nevadensis E. B. Copeland 1930-7-6 Butte above Jonesville 2050 Comment
  RSA635203  Arctostaphylos patula Jon E. Keeley 1996-6-20 27469 Butte Approximately 1/2 km west of Cohasset. Comment
  UCD51933  Arctostaphylos truei John Thomas Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  UCD51943  Arctostaphylos truei John Thomas Howell 1976-4-2 51569 Butte Transition Life Zone, Paradise, Butte County. 609 Comment
  SEINET2028706 Image available Arctostaphylos viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 niles north of Chico Comment
  CAS-BOT-BC47376  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51094 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC42015  Arctostaphylos viscida subsp. viscida Lowell Ahart 1976-2-19 1011 Butte Near Ponderosa Way, about 3 mi south of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi northwest of Forbestown. 609 Comment
  CHSC57370  Arctostaphylos viscida subsp. viscida Patrick Cooley 1990-4-1 3 Butte Jct. Skyway and Coutolenc Rd. ca. 1 1/2 mi. N of Paradise. 701 Comment
  CHSC7145  Arctostaphylos viscida subsp. viscida Lynn R. Thomas 1969-3-2 12 Butte E edge at junction of Pentz and Bennum Rds., ca. 0.6 mi. NW of Calif. 70, between Paradise and Oroville. 152 Comment
  JEPS118409  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-7-9 17565 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  JEPS119564  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-2-22 17752 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA121267  Arctostaphylos viscida subsp. viscida A. E. Wieslander 1933-6-24 328 Butte 1/4 mi. E. of Paradise on Pearson Road. 518 Comment
  JEPS110513  Aristida oligantha Lowell Ahart 2006-10-13 13504 Butte On the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  SEINET3918849  Aristida oligantha M. S. Taylor 1977-8-16 1434 Butte Abundant in Valley Grassland, near culvert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico.; 0 61 Comment
  SEINET3919495  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte 3.5 miles east of Honcut along La Porte road.; 0 Comment
  SEINET10512738  Aristida oligantha Mary Susan Taylor 1977-8-16 Taylor 1434 Butte On S side of Pentz Rd, near culvert in natural drainage, ca 1.2 e of jct of Pentz Rd & Hwy 99, ca 15 mi S of Chico. 61 Comment
  CHSC71208  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CAS-BOT-BC400421  Aristolochia californica Mrs. C. C. Bruce 1897-3-1 1794 Butte Little Chico Comment
  CHSC116  Aristolochia californica M. Anthony 1963-4-29 Butte Near Covered Bridge on Butte Creek. 108 Comment
  JEPS117609  Aristolochia californica Lowell Ahart 2010-6-12 16795 Butte Climbing on shrubs on the east side of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 216 Comment
  CHSC105176  Arnica chamissonis B. Castro; L. P. Janeway 1999-8-1 1019 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  CAS-BOT-BC295842  Arnica dealbata C. R. Quick 1951-6-9 51 -99 Butte Big Bar Mt. ridge Comment
  CHSC44894  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte About 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC93962  Arnica discoidea R. D. Fischer 2004-6-20 758 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants scattered in open YPF at the south end of camp and west of pond. 1371 Comment
  CAS-BOT-BC82414  Arnica discoidea L. P. Janeway 1995-6-20 4802 Butte Watson Ridge; about 1 mi south of Pompys Point. Brush Creek quad 1188 Comment
  CHSC47851  Artemisia biennis Vernon H. Oswald 1989-12-6 4030 Butte Arroyo Chico. Pine Creek Landing Site of Bidwell River Park, west of Chico. 42 Comment
  CHSC11849  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville. 1550 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
  CHSC44033  Artemisia tridentata subsp. tridentata F. Jay Fuller 1988-6-17 520 Butte Approx. 50 m southwest of bridge over Marble Creek. 1072 Comment
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Feb 14 2007
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  SEINET10475948  Asarum hartwegii Mary Susan Taylor 1980-9-12 Taylor 3334 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
  UC166407  Asclepias cordifolia Mrs. R. M. Austin May 1896 287 Butte Little Chico Creek Comment
  SEINET10903038  Asclepias cordifolia Lowell Ahart 1985-6-17 Ahart 5063 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  HSC44928  Asparagus officinalis J. P. Smith, J. O. Sawyer 1973-4-13 6037 Butte Under cultivation at the J.O. Sawyer Sr. residence in Chico Comment
  HSC66083  Aspidotis californica M. S. Taylor 1980-3-19 2393 Butte Embankment of Macabes Cr. 100 ft. E of Lumpkin Rd. 2.5 mi. N of its jct. with Forbestown Rd.18 mi. NE of Oroville 396 Comment
  SEINET10475334  Aster breweri Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4212 Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  CHSC40770  Astragalus gambelianus Lowell Ahart 1985-5-10 4940 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville, Table Mountain. 411 Comment
  CHSC29234  Astragalus pauperculus M. S. Taylor 1980-3-15 2380 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC58265  Astragalus tener var. ferrisiae Lowell Ahart 1992-5-23 6770 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC25266  Asyneuma prenanthoides M. S. Taylor 1977-6-26 1370 Butte On s side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 731 Comment
  JEPS87417  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  CAS-BOT-BC68696  Athyrium filix-femina var. californicum Clarence R. Quick 1952-7-1 52 -122 Butte Sierra Nevada - Mill Creek Road between Feather River Highway and Coyote Gap Comment
  SEINET10532286  Athyrium filix-femina var. californicum Mary Susan Taylor 1982-8-16 Taylor 5003 Butte T24N R4E nw/ne sec 11. Pulga NW quad. Jct small creek and rd in High Rock Ravine just s of Discovery Creek, ca. 4 air mi ne of Stirling City. Riparian; 4800 ft. 1463 Comment
  CAS-BOT-BC17446  Athysanus pusillus Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham. Comment
  SEINET11986399  Athysanus pusillus Unknown 1976-1 13 Butte ca 10 ft N of Ponderosa Way, ca 4 mi W of jct of Ponderosa Way & Hwy 32, ca 22 mi NE of Chico 427 Comment
  UCD97655  Atriplex rosea L. Ahart 1982-7-10 3662 Butte in parking area around check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CAS-BOT-BC176602  Atriplex serenana var. serenana Lowell Ahart 1981-9-10 3145 Butte Gray Lodge, SW of Gridley 35 Comment
  CHSC48286  Atriplex serenana var. serenana Vernon Oswald 1983-6-28 779 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  CHSC61036  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CHSC26655  Atriplex triangularis M. S. Taylor 1977-11-10 1524 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in drying creek, ca. 23 mi s of Chico. 30 Comment
  CHSC41558  Avena barbata R. L. Ondricek-Fallscheer 1982-5-26 138 Butte At sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  CHSC92513  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
  SEINET3823232 Image available Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction East Gridley Road and CA-70 (Honcut 7.5' Q) 23 Comment
  SEINET10514062  Avena fatua Lowell Ahart 1981-5-24 Ahart 2835 Butte In a farmed field planted to Sierra Oats, on a dry red gravelly soil, on Peter Ahart Ranch, ca. 2.5 mi NE of Honcut. 50 Comment
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  JEPS102322  Baccharis pilularis Lowell Ahart 2000-11-4 8715 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (E side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 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
  CHSC34781  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte On S side of rd, a little E of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi W of Pennington Rd, ca. 12 mi SW of Gridley. 35 Comment
  CAS-BOT-BC98186  Baccharis salicifolia Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CDA6270  Bacopa rotundifolia T. C. Fuller 1962-6-11 8947 Butte U. C. Experimental Station, 4 miles north of Biggs. 0 Comment
  CAS-BOT-BC106558  Balsamorhiza deltoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla 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
  CHSC38120  Bellis perennis R. L. Ondricek-Fallscheer 1983-5-10 174 Butte Cultivated lawn area of Butte Hall, California State Univ., Chico campus. 59 Comment
  CHSC33575  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-21 3553 Butte Ca. 500 ft s of creek crossing rd, e side of spur rd (to Old Utah Mine) ca. 0.5 mi n of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi ne of Magalia. 792 Comment
  CDA36621  Bergia texana L. Ahart 2006-8-5 13083 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC46017  Bergia texana Lowell Ahart 1974-9-8 628 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA718091  Bergia texana L. Ahart 2006-8-5 13 .083 Butte Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC43271  Bidens cernua Lowell Ahart 1987-8-30 5862 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
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC38328  Blennosperma nanum var. nanum Vernon H. Oswald 1983-1-20 49 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  JEPS106002  Blennosperma nanum var. nanum Lowell Ahart 2004-4-1 10706 Butte On the margins of vernal pools, on the north side of Nelson Avenue, about 45 yards west of the intersection of 20th Street and Nelson Avenue, Thermalito 53 Comment
  RSA0036032  Blennosperma nanum var. nanum Lowell A. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 Comment
  CHSC36679  Boechera arcuata R. E. Preston 1982-4-29 274 Butte At edge of trail to Bear Ranch Creek falls, s side of Hwy 70, ca. 100 yds sw of PG and E rest stop. 487 Comment
  CHSC31952  Boechera breweri J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1045 Butte Top of Humboldt Peak, ca. 400 meters NE of summit along hogback ridge. 2133 Comment
  RSA166345  Boisduvalia glabella D. M. Moore 1960-6-2 99 Butte U.S. 99E 1.2 mi. S of Butte - Tehama county line Comment
  POM46122  Boisduvalia stricta C. C. Bruce 1897-06 2000 Butte [Unspecified] Comment
  UC1472738  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 4a&b Butte Jonesville 1524 Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  UC114848  Boykinia major Mrs. R. M. Austin July 1899 114 Butte Butte Creek Colby; , Colby Comment
  CAS-BOT-BC418407  Boykinia occidentalis Lowell Ahart 1985-6-30 5072 Butte East of dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC40383  Boykinia occidentalis Lowell Ahart 1985-6-30 5075 Butte Along a small stream. East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC68550  Brachypodium distachyon Lowell Ahart 1997-5-18 7740 Butte Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC74036  Brachypodium distachyon B. Castro 1996-5-18 661 Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 60 ft N of creek channel directly under transmission lines. 85 Comment
  SEINET5541525  Brassica campestris H. S. Gentry, S. Koch 1962-1 19785 Butte Near Richvale. 53 Comment
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  CAS-BOT-BC30309  Brassica nigra Lowell Ahart 1982-5-29 3449 Butte North of the Peter Ahart Ranch, about 2.5 miles north and 1.25 miles east of Honcut. 50 Comment
  CHSC31618  Brickellia californica Lowell Ahart 1973-8-3 273 Butte Ahart Ranch. On gravel bars on North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  RSA0060844  Brickellia californica Lowell A. Ahart 2012-10-20 18496 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC41920  Brickellia greenei Lowell Ahart 1983-8-16 4281 Butte Along Humboldt Road, Butte Meadows. About 3 miles southwest of Butte Meadows. 1450 Comment
  SEINET10967591  Briza minor Orme 1980-4-9 Orme 19 Butte Large population, T22N R2E NW1/4 of Sec. 17. 0.8 km on main road through upper Bidwell Park. 1.6 km N of Chico. Found on the edge of a open, rocky field. Soil a loam to sandy loam. 64 Comment
  CHSC2935  Brodiaea californica W. Fitzwater 1958-4-29 Butte On Shasta Hwy. 4 mi. N of Chico. Comment
  UCD139106  Brodiaea californica Robert E. Preston 2003-5-11 2132 a Butte ca. 5.25 mile east of Durham, along Pentz Road, 0.65 mile east of Hwy 99. 74 Comment
  CHSC78755  Brodiaea californica var. californica L. P. Janeway 2000-5-14 6724 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  CHSC29288  Brodiaea coronaria R. A. Schlising 1980-5-29 3604 Butte Richvale vernal pools. 1/4 mi S of jct Hwy 162 (east to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UCD147862  Brodiaea coronaria Robert E. Preston 2005-6-13 2354 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd. 55 Comment
  SEINET12053142  Brodiaea elegans Unknown 5 s.n. Butte no further locality Comment
  JEPS127076  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 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 3/4 miles (air) northeast of Honcut. Comment
  CHSC42231  Brodiaea minor David B. Andreas 1986-4-20 18 Butte Ca. 5 m from roadside junction Hwy 99 and Broyles Rd. 18 km nw of Chico. 61 Comment
  SEINET10797038 Image available Brodiaea sierrae R. E. Preston 2004-6-19 Preston 2261 Butte 1.3 W of Hurleton, along Forbestown Rd. 434 Comment
  SEINET10830989  Bromus Mary Susan Taylor 1978-7-21 Taylor 1807 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 miles N of Lake Madrone, ca. 19 miles NE of Oroville; Yellow Pine Forest. Comment
  SEINET3921419  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville.; 0 37 Comment
  CHSC88253  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  JEPS103548  Bromus carinatus var. carinatus Lowell Ahart 2002-6-21 9736 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  SEINET10523270  Bromus catharticus Leverton 1874-4-20 LEVERTON s.n. Butte In field across from Pleasant Valley High School on East Ave. in Chico. 34 Comment
  CHSC4298  Bromus diandrus M. M. Gregg 1966-5-27 183 Butte CSC Campus. Behind Dining hall across the creek and between the two bridges east of the dining hall. Along the trail. Comment
  CHSC6668  Bromus diandrus Marilyn Lee 1968-3-15 109 Butte East side of Cohasset Rd., 100 yards N. of entrance to Chico Airport. Comment
  UCD169395  Bromus diandrus Lowell Ahart 2005-4-14 11707 Butte North of Spruce Street, Gridley; south of the railroad bridge, east of the railroad tracks. 28 Comment
  CHSC101667  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC105260  Bromus hordeaceus Lowell Ahart 2010-6-20 16816 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC93446  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  RSA712855  Bromus hordeaceus L. Ahart 2006-5-10 12621 Butte on the north side of the poor dirt road, Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 355 Comment
  CAS-BOT-BC162454  Bromus laevipes John Thomas Howell 1962-6-15 37495 Butte Sierra Nevada. Magalia. 731 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
  CDA34624  Bromus madritensis subsp. rubens L. Ahart 2009-4-17 15557 Butte On the south slope of a ridge about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC49517  Bromus orcuttianus Vernon Oswald 1985-7-2 1874 Butte Hwy 32 2.3 mi s of Lomo. Logged area. 1133 Comment
  CAS-BOT-BC161963  Bromus rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC35748  Bromus tectorum R. E. Preston 1982-5-18 283 Butte Roadside. Forbestown Diversion Dam. 548 Comment
  CAS-BOT-BC185535  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC79807  Calandrinia ciliata Leanna Brown 1999-3-4 18 Butte Lowell Drive, Chico. [Lat./Long. on label is '39 46 N; 121 52 W']. 62 Comment
  RSA325177  Callitriche heterophylla M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-6 5403 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CDA35328  Callitriche heterophylla subsp. bolanderi T. C. Fuller 1962-5-17 8720 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  HSC93346  Callitriche heterophylla var. heterophylla L. Ahart 1995-5-26 7574 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  JEPS122232  Callitriche heterophylla var. heterophylla Lowell Ahart 2014-4-26 19415 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CHSC24839  Calochortus albus M. S. McCrum 1976-4-27 8 Butte Ca. 6.5 mi e of Chico, 100 yd s of Butte Creek, 0.1 mi w of Covered Bridge. 112 Comment
  CHSC44979  Calochortus albus Elizabeth L. Knight 1988-4-16 9 Butte Ca. 3.5 m n of Oroville on Table Mountain and 0.5 m s of Shirmer Ravine, 15 ft w of Cherokee Road. 152 Comment
  RSA21309  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SEINET10872528  Calochortus albus Mary Susan Taylor 1980-4-27 Taylor 2567 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  CAS-BOT-BC487814  Calochortus coeruleus A. A. Heller 1928-6-20 s.n. Butte In the yellow forest at Butte Meadows Comment
  OBI48097  Calochortus coeruleus Rhonda Riggins 1989-4-27 1627 Butte Edge of woods along Detlow rd, 0.4 mi S US 70, 2.6 mi SW Jarbo Camp Fire Station, 8.0 mi SW Pulga 640 Comment
  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
  CAS-BOT-BC491855  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Grassy hills 8 miles north of Oroville below the quercus Douglasii belt Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  CAS-BOT-BC491858  Calochortus luteus H. C. Cantelow 1940-5-10 s.n. Butte 10miles east of Oroville, Bidwell Bar Bridge Comment
  POM109677  Calochortus luteus C. C. Bruce 1897-04 2119 Butte Little Chico Comment
  CHSC115498  Calochortus monophyllus L. P. Janeway 2015-3-16 11637 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 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
  CHSC31342  Calochortus monophyllus Leslie Steidl 1980-4-1 9 Butte N side of railroad grade, 1 mi. e of Craig Access Rd, 1.5 mi e of cemetery, 3.9 mi from Lumkin Rd, 18 mi e of Oroville. 341 Comment
  CHSC46786  Calochortus monophyllus Neal Schaeffer 1982-4-18 11 Butte Between Pentz Rd and Kunkle reservoir, ca. 20 m from road, 50m n of reservoir access road. 450 Comment
  CAS-BOT-BC492602  Calochortus monophyllus C. C., Mrs. Bruce 1893-5-1 2404 Butte Foot hills Comment
  SEINET12047249  Calochortus monophyllus W. F. Babb 1980-1 7 Butte W side of Pentz Rd, ca 3.2 km S of Paradise Comment
  CDA14083  Calochortus superbus G. F. Hrusa, T. D. Wilfred 1997-7-3 13967 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries enter from E. Comment
  CHSC44529  Calochortus tolmiei Lowell Ahart 1988-3-27 5941 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 350 Comment
  HSC38032  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2483 Butte Just E of Magalia Comment
  UC843695  Calochortus vestae Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  UC1971740  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca. 10 mi NW of Chico and ca. 1/2 mi S of Broyles Road Comment
  CHSC46913  Calycadenia multiglandulosa Lowell Ahart 1980-7-4 2448 Butte Near the Oak Grove Cementery, about 1/2 mile southeast of Hurleton. 548 Comment
  CHSC39657  Calycadenia oppositifolia Lowell Ahart 1983-6-21 4086 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 13. 450 Comment
  CHSC40065  Calycadenia oppositifolia C. C. Parry 1882-5-1 188 Butte Chico. Comment
  CHSC44060  Calycadenia oppositifolia L. P. Janeway 1988-5-30 2720 Butte Cyn of Big Chico Cr; Upper Bidwell Park, along Upper Park Rd 4.3 mi from Wildwood Ave. 228 Comment
  CHSC76828  Calycadenia oppositifolia L. P. Janeway 1999-11-15 6628 Butte Northern Sierra Nevada foothills. Between Nelson Bar Road and Lake Oroville, 0.25 mi north-northwest of Lime Saddle. 281 Comment
  JEPS107984  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  CAS-BOT-BC270880  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 miles SE of Chico Comment
  JEPS104278  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, ca 2 mi n and 1 3/8 mi e of Honcut, ca 12 mi se of Oroville. 42 Comment
  UCD129792  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99, at Durham Road, 10 miles southeast of Chico. Comment
  CHSC102725  Calycadenia truncata Lowell Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC28385  Calycadenia truncata J. D. Jokerst; M. S. Taylor 1979-10-13 398 Butte Jordan Hill Rd. (Ponderosa Way) 2.55 mi E of junction with the N fork Feather River. 853 Comment
  CAS-BOT-BC90923  Calycanthus occidentalis A. A. Heller 1915-5-17 11874 Butte Canon [Canyon] of Chico Creek 5 miles east of Chico. Comment
  CHSC1363  Calyptridium monospermum 1954-5-30 Butte Rag dump 5, near Stirling. 1127 Comment
  CHSC29385  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; S. Azevedo 1980-6-13 3705 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along garland Road (=0.25 mil N jct with Doe Mill Road and Ponderosa Way). 902 Comment
  CHSC33260  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3687 Butte Along Hwy 32, 3.2 miles S of Butte/Tehama County line. Comment
  CHSC33652  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3167 Butte N of Magalia and NE of De Sabla, just NE of junction of Skyway and Humbug/Humboldt Roads. 853 Comment
  CHSC48299  Calystegia malacophylla Vernon Oswald 1983-8-17 981 Butte Humboldt Summit on Humboldt Road, NE of Jonesville at the junction of Butte, Tehama and Plumas Counties. 1999 Comment
  SEINET267151  Calystegia occidentalis subsp. fulcrata T. A. Ranker, P. G. Trapp 1994-6-17 1614 Butte Pence Road south of Paradise. 395 Comment
  JEPS103331  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2002-6-21 9734 Butte On a mountainside, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS118206  Calystegia occidentalis subsp. occidentalis Dean W. Taylor 2004-6-17 19114 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CAS-BOT-BC496958  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  RSA4633  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  CHSC116496  Camassia quamash subsp. breviflora Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20195 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  CHSC42808  Camassia quamash subsp. quamash L. P. Janeway 1987-7-5 2437 Butte 1.0 mi SW of Jones Mdw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  POM219514  Campanula prenanthoides H. F. Copeland 1924-8-2 599 Butte Jonesville. 1524 Comment
  CHSC61304  Campanula scouleri Lowell Ahart 1993-7-23 7110 Butte On the sides of a small stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC489  Capsella bursa-pastoris M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  JEPS119515  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte About 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. Comment
  CHSC88857  Cardamine oligosperma Christine Hantelman 2000-2-18 5 Butte Along Meridian road 1/4 mile north of Hwy 99 turnoff. In ditch on north side of road. 57 Comment
  CHSC34524  Cardamine pachystigma R. E. Preston 1981-4-11 52 Butte Roadcut, on s side of Forbestown Reservoir, ca. 400 m e of diversion dam, ca. 5.8 km ne of Forbestown. 580 Comment
  CHSC86575  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7769 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  JEPS120951  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2013-4-20 18548 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CAS-BOT-BC18214  Carex H. F. Copeland 1920-8-29 163 Butte Jonesville by irrigation ditch. 1219 Comment
  CHSC6027  Carex amplifolia M. MacArthur 1968-6-19 241 Butte Ca. 30 ft. S of the Esplanade bridge over Big Chico Creek, along N side, Chico State College. 60 Comment
  SEINET10467019  Carex amplifolia Lowell Ahart 1983-9-17 Ahart 4439 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CAS-BOT-BC17906  Carex angustata L. P. Janeway 1988-6-25 2896 Butte Meadow adjacent to Bull Hill Road 2.6 miles from the Skyway. 1508 Comment
  JEPS121965  Carex angustata Lowell Ahart 2014-7-7 19579 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  HSC87065  Carex barbarae L. P. Janeway, Heidi Wienert, Scott George 1988-7-27 3092 Butte Just W of Murphy Slough and Golden State Island near the Sacramento River 38 Comment
  CAS-BOT-BC19418  Carex bolanderi Lowell Ahart 1988-7-31 6149 Butte About 4 road miles north of Stirling City. On the east side of the West Branch of the Feather River. 914 Comment
  CHSC61508  Carex bolanderi Lowell Ahart 1993-6-26 7008 Butte In a small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  JEPS116085  Carex bolanderi Lowell Ahart 2009-5-30 15790 Butte Along a small stream about 20 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
  RSA718308  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CHSC52847  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3145 Butte SW-facing slope above Coon Hollow; along dirt road 0.8 mi NE of the creek. 1783 Comment
  SEINET10752408  Carex brainerdii Lawrence P. Janeway 1988-7-16 Janeway 3009 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 12. Along Colby Mountain Rd., 1/2 mi N of Jonesville. Comment
  CHSC45047  Carex capitata Vernon Oswald 1987-5-11 2386 Butte Chico Meadows ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC44104  Carex cusickii L. P. Janeway 1987-6-26 2325 Butte Open mdw just NW of Logue Mdws along road to Lynch Mdws. 1325 Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  CHSC78278  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 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. 1219 Comment
  CHSC52850  Carex densa L. P. Janeway 1988-5-19 2675 Butte Canyon of Big Chico Creek; seep along Ponderosa Way 1.2 mi NW of the creek crossing. 426 Comment
  JEPS116021  Carex densa Lowell Ahart 2009-6-3 15816 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC45078  Carex echinata subsp. echinata Vernon Oswald 1983-7-6 829 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CAS-BOT-BC19996  Carex feta A. A. Heller 1913-6-4 10781 Butte Table Mountain Olive Ranch north of Oroville. Comment
  HSC96354  Carex feta L. P. Janeway 2003-6-8 7818 Butte Flea Valley, meadow at head of Concow Creek 1116 Comment
  SEINET4231831 Image available Carex feta L. Janeway, Castro, B 2009-1 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. Comment
  CAS-BOT-BC65490  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi N of Kimshew Creek. 1402 Comment
  SEINET10889103  Carex feta A. Arthur Heller 1913-6-4 Heller 10781 Butte Table Mountain Oliver Ranch north of Oroville. Comment
  CHSC45050  Carex fracta Vernon Oswald 1983-7-19 881 Butte Humbug Summit Rd. 1.3 mi n-e of its jct. with the Skyway n of Inskip. 1554 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
  JEPS117933  Carex geyeri L. P. Janeway & Linus Gog 2008-7-18 9435 Butte along Humbug Summit Road, above tje Cornelia Lott Sank Memorial Spring (which feeds West Branch Feather River) High Cascade Range 1536 Comment
  CHSC43885  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2427 Butte Seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  CHSC47134  Carex laeviculmis L. P. Janeway 1988-6-25 2870 Butte Near Coon Cr and near Bull Hill Rd (Skyway) 1.0 mi from Skyway (jct with Humbug Summit Rd). 1554 Comment
  RSA122447  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  CAS-BOT-BC278763  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  CHSC40924  Carex lemmonii Lowell Ahart 1985-6-30 5078 Butte Along a small stream, east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC45254  Carex lemmonii L. P. Janeway 1988-7-2 2946 Butte Marsh/mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  UCR66603  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 457 Comment
  CHSC105669  Carex luzulina var. ablata Lowell Ahart 2010-9-21 17219 Butte Under red fir trees, open meadow-like area, near a poor camp, 30 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
  CHSC111389  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Near a small drainage, north of the meadow, southwest of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 268 Comment
  CAS-BOT-BC32154  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, ca 1/2 mi SW of Bardees Bar along N fork of Feather River, 365 Comment
  CAS-BOT-BC119744  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1848 Butte Jonesville quad. Along Humbug Rd. ca 1.5 mi SW of Humbug Summit. 1859 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  UC1609337  Carex nudata Lowell Ahart 1993-4-8 6932 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CHSC84733  Carex pachystachya L. P. Janeway; John Hunt 2003-5-8 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  JEPS106104  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale 32 Comment
  CAS-BOT-BC118352  Carex praegracilis L. P. Janeway 1987-5-20 2056 Butte Near Gold Flat and Hodap Creek and the jct of Lunt Rd and Nelson Bar Rd. 457 Comment
  CAS-BOT-BC117986  Carex rossii John Thomas Howell 1962-6-16 37537 Butte Magalia 731 Comment
  CHSC48553  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2996 Butte At Crane Valley (upper Big Kimshew Cr). 1569 Comment
  JEPS110195  Carex simulata Lowell Ahart 2006-6-16 13011 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC36884  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1656 Butte Coon Hollow just north of Coon Hollow Creek on road 26N74. 1706 Comment
  CHSC52878  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3143 Butte Southwest facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC44990  Carex utriculata S. C. Morey 1983-8-3 689 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC66453  Carex vulpinoidea Vernon H. Oswald; Lowell Ahart 1996-6-10 7754 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A canal at the NE corner of Tract 7.2, Sanctuary I. Common along all this canal, its laterals, and the edges of Tract 6, a permanent pool in Sanctuary I. 33 Comment
  UCD140189  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada. Near summit of SSE slope above Little Butte Creek, N of Magalia. Immediately east of Holmwood Drive. 750 Comment
  CHSC103964  Castilleja affinis subsp. affinis Lowell Ahart 2010-5-7 16630 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico. 277 Comment
  UC885148  Castilleja affinis subsp. affinis A. A. Heller 1916-4-13 12319 Butte e of Chico; Stilson Canyon Comment
  JEPS115589  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 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
  JEPS60470  Castilleja applegatei subsp. pinetorum T. I. Chuang and L. Constance 1969-7-2 6709 Butte 8.6 mi sw Arch Rock Tunnel (on Highway 70) Comment
  JEPS80633  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte 2.2 mi s Dark Canyon Rd. junction with Big Bend Rd. (e side of Dark Canyon Rd, ca 3 air mi s of Jarbo Gap on Hwy 70); Berry Creek Quad. 426 Comment
  CAS-BOT-BC255460  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Edge of forest about Chico Meadows 1219 Comment
  CHSC30884  Castilleja attenuata J. D. Jokerst 1979-4-6 1179 Butte Top of North Table Mt, ca 200 m north of Cherokee Rd where it intersects the east edge of the mountain. 396 Comment
  JEPS104367  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  JEPS98283  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte 5 air mi SW of Oroville (S side of the access rd to the boat ramp at the Thermolito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  CHSC11343  Castilleja campestris subsp. campestris Lowell Ahart 1970-4-23 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC43086  Castilleja exserta subsp. exserta Maralyn O'Meara 1974-4-20 293 Butte Table Mtn. 305 Comment
  CHSC30794  Castilleja lacera M. S. Taylor; J. D. Jokerst 1980-4-18 2533 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew, in Foothill Woodland. 518 Comment
  CHSC38712  Castilleja lacera Vernon Oswald 1983-4-18 341 Butte Upper Bidwell Park, Chico, along the trail ca. 200 ft below (south of) the north rim at the power lines. 213 Comment
  CHSC44430  Castilleja lacera Lowell Ahart 1988-6-15 6040 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS80685  Castilleja lacera L. R. Heckard and T. I. Chuang 1981-6-11 5536 Butte 0.5 mi w Forbestown Road junction with Lumpkin Road (along Forbestown Road, ca 12 air mi e of Oroville) 609 Comment
  UC426964  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville 1500 Comment
  CHSC61027  Casuarina equisetifolia Vernon H. Oswald 1993-7-29 5731 Butte Gray Lodge Wildlife management Area W of Gridley, S side of Rutherford Rd. at Parking Lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CHSC104014  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico. 67 Comment
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  UC600529  Ceanothus cordulatus H. F. Copeland 1927-9-2 Butte Jonesville Comment
  CHSC51074  Ceanothus cuneatus Pauline Broyles 1988-2-25 1097 Butte The Nature Conservancy Vina Plains Preserve. On e. side of Singer Creek in n.e. portion of Wurlitzer Addition. Atop the bank of the creek. Comment
  JEPS119624  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trial, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. Comment
  CAS-BOT-BC50779  Ceanothus integerrimus A. A. Heller; H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek) Comment
  SD2946  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville, in edge of fir and pine woods. 1650 Comment
  CAS-BOT-BC52000  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  JEPS117916  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Upper Bidwell Park, Chico Cascade Range Foothills (north side of Big Chico Creek 455 m west of Day Camp) 91 Comment
  CHSC27158  Celtis occidentalis M. MacArthur 1968-6-23 286 Butte Ca. 10 ft. SE of Big Chico Creek, opposite SW entrance to LS bld., Chico State College. 60 Comment
  CDA18839  Centaurea diffusa M. Stewart, Riley, Rick Keck 1997-8-12 PDR 1145796 Butte along N/S Humboldt Rd., 1.2 miles west of USFS CDF fire station, Butte Meadows. 0 Comment
  CDA18893  Centaurea melitensis H. D. Riley 1999-6-2 PDR 1145795 Butte vicinity of Oroville appr. 1/3 mile SW of intersection of Pentz-Magalia Hwy and Hwy 70. 0 Comment
  CHSC109623  Centaurea melitensis Lowell Ahart 2012-5-20 18101 Butte On the east side of the Humboldt Trail, southeast part of Upper Bidwell Park, northeast of Chico. 414 Comment
  UC894388  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte e of Chico (Stilson Canon); Stilson Canon Comment
  CHSC31966  Centaurea solstitialis S. Posner 1972-10-3 Butte Garden behind Trans Pacific Garden Apartments (725 Nord Ave.), Chico. Comment
  JEPS94438  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte abuot 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel tower power line, along sides of a logging road, about 1/4 mi w of Rim Road) 731 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  UC175570  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte n of Oroville (Olive Ranch); Table Mountain Comment
  CHSC84382  Centaurium tenuiflorum Lowell Ahart 1983-6-26 4128 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS46925  Centaurium venustum H. A. Dutton 1921-1 Butte e of Chico Comment
  JEPS104277  Centromadia fitchii Lowell Ahart 2003-8-4 10469 Butte Pastue fields, Peter Ahart Ranch, ca 1 1/2 mi n and 1 mi e of Honcut, ca 12 mi se of Oroville. 31 Comment
  SBBG19383  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  CDA30204  Cephalanthus occidentalis var. californicus L. Ahart 2009-7-9 16019 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
  CHSC42972  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC41253  Cerastium fontanum subsp. vulgare S. C. Morey 1983-7-21 469 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC94262  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC38294  Cerastium glomeratum Vernon Oswald 1983-3-9 142 Butte Upper Bidwell Park, Chico, on the abandoned road 400 ft n of Upper Park Rd. at Diversion Dam. In meadow. 115 Comment
  CHSC46350  Cerastium glomeratum Lowell Ahart 1989-5-23 6243 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC55491  Cercis occidentalis Ben Cunningham 1991-4-20 Butte Poe Dam, 10 ft w of Highway 70 and 52 mi s of Greenville. 609 Comment
  SEINET267157  Cercocarpus betuloides var. betuloides T. A. Ranker, PG Trapp 1994-6-17 1624 Butte Pence Road south of Paradise; Cherokee quad. 7.5 min topographic map; along road 395 Comment
  CHSC49825  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-4 4149 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  UC1586578  Chaenactis glabriuscula var. megacephala Vernon H. Oswald and Lowell Ahart 1991-6-5 4645 Butte ca 1.5 mi (air) nw Platt Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine, located on Big Chico Creek, on the w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  CHSC31398  Chamaebatia foliolosa Herb Allan McLane 1980-4-25 13 Butte Section 4 of NE1/4 of SE1/4 of NW1/4 of NE1/4 of SE1/4. E side of Ponderosa Way, Plumas National Forest, MDM. 609 Comment
  JEPS83932  Chamaesyce hooveri R. D. Stone 1986-7-15 750 Butte 10 mi se Chico (0.1 mi e of Hwy 99, 0.5 mi se of intersection with Pentz Rd); Esquon Lake 54 Comment
  CHSC47429  Chamaesyce maculata Lowell Ahart 1984-8-19 4784 Butte North of the state borrow area, west on Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC94603  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  JEPS122287  Chamaesyce maculata Lowell Ahart 2014-8-24 19729 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  UC175344  Chamaesyce maculata A. A. Heller 1913-9-16 11139 Butte e Chico (hills near Big Chico Creek) Comment
  CHSC34045  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 1981-7-26 3001 Butte Along the edge of the rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl HQ, ca. 12 mi sw of Gridley. 35 Comment
  JEPS103264  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2002-10-17 9995 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) NE of Oroville Dam. 227 Comment
  SEINET10529956  Cheilanthes carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1927 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC23659  Cheilanthes gracillima M. S. Taylor 1976-4-24 1069 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  SEINET10529916  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2709 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
  SEINET10529937  Cheilanthes siliquosa Mary Susan Taylor 1979-10-13 Taylor 2273 Butte T23N R4E e center sec 29. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 11.1 mi N of its jct with Concow Road, 1.9 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CHSC69678  Chenopodium album Vernon Oswald 1983-7-13 868 Butte Upper Bidwell in Chico, within the enclosure which formerly housed the Hooker Oak. Comment
  UC1191352  Chenopodium ambrosioides Herbert L. Mason and Verne Grant 1946-8-14 13026 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CAS-BOT-BC451482  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  CAS-BOT-BC451483  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  UCD59685  Chloris virgata Morton D. Morse 1955-8-19 s. n. Butte foothills near Pentz. Comment
  JEPS50844  Chlorogalum angustifolium Glen Keator 1967-5-20 GV 1 Butte 7 mi s Oroville Comment
  CHSC99754  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  CHSC109165  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  RSA392754  Chorizanthe membranacea L. Ahart 1984-6-8 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mile E of Ponderosa Dam, ca. 2 miles N of Forbestown. 475 Comment
  CHSC94030  Chorizanthe stellulata R. D. Fischer 2005-4-30 734 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on thin Tuscan mudflow of ridge top. 518 Comment
  CAS-BOT-BC279859  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  SEINET10453137  Circaea alpina subsp. pacifica Mary Susan Taylor 1978-7-21 Taylor 1817 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
  SEINET10453138  Circaea alpina subsp. pacifica Mary Susan Taylor 1978-7-19 Taylor 1741 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET10453141  Circaea alpina subsp. pacifica Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5116 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  SD5925  Cirsium andersonii E. B. Copeland 1931-7-27 Butte Jonesville 1650 Comment
  CHSC28678  Cirsium douglasii var. breweri M. S. Taylor 1978-7-19 1747 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC9546  Cirsium occidentale var. venustum R. G. Bevers 1968-3-5 30 Butte Locally found 9 mi n of Chico on hwy. 32. On the w side of the rd. 100 ft. s of large turnoff overlooking the valley. Ca. 10 ft from the rd. 304 Comment
  CAS-BOT-BC285725  Cirsium vulgare Lowell Ahart 1981-7-26 3010 Butte Gray Lodge, southwest of Gridley 35 Comment
  CAS-BOT-BC228749  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC228754  Cistanthe umbellata E. B. Copeland 1930-6-28 s.n. Butte Jonesville; Scotch John 1750 Comment
  SEINET10866360  Cistus salviifolius Mary Susan Taylor 1975-5-6 Taylor 561 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Building; Riparian Woodland. 65 Comment
  CHSC6606  Citrus M. MacArthur 1968-6-19 317 Butte Yard by building D, Chico State College campus. 60 Comment
  CAS-BOT-BC164134  Clarkia concinna Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  JEPS115984  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, 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 234 Comment
  SEINET516158  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  SEINET10453156  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4176 Butte T22N R4E nw sec 15. Along road, se of Concow Reservoir, ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10973132  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4186 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC35148  Clarkia mildrediae subsp. lutescens R. Schlising; K. Tarp, R. Banchero 1981-7-11 4141 Butte NE part of county, E of N Fork of Feather River at Coyote Gap region; at roadside along Four Trees Road. 1447 Comment
  LA206070  Clarkia mildrediae subsp. mildrediae Brian Le Neve; 1996-7-4 82 Butte French Creek Road Comment
  CHSC39037  Clarkia mosquinii Lowell Ahart 1983-6-26 4118 Butte About 15 miles ne of Oroville, about 2 miles se of intersection of the Oroville/Quincy Highway and Ponderosa Way; along Ponderosa Way. 500 Comment
  CHSC70735  Clarkia mosquinii L. P. Janeway 1993-6-15 4386 Butte Southwest side of Ponderosa Dam on South Fork Feather River; along access road about 50 ft west of the dam. North-facing road cutbank. 298 Comment
  CHSC82715  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area. 509 Comment
  SEINET10453160  Clarkia purpurea Mary Susan Taylor 1976-4-27 Taylor 1082 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  CAS-BOT-BC163639  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  JEPS115625  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  UCD104931  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CHSC48629  Clarkia purpurea subsp. viminea Vernon Oswald 1988-6-14 3377 Butte Jordan Hill Rd. between Coutolenc Rd. and the West Branch of the Feather River. 512 Comment
  CHSC70747  Clarkia rhomboidea L. P. Janeway 1993-6-16 4389 Butte Upper slopes, east-facing, in North Fork Feather River; along Hwy 70 1.1-1.3 mi northeast of Jarbo Gap. 670 Comment
  CHSC70750  Clarkia rhomboidea L. P. Janeway 1993-6-23 4399 Butte Along Rd 22N49 about 0.1 mi west of Oroville-Quincy Hwy, 1.0 mi southwest of Junction House. 1005 Comment
  UC1143245  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 759 Butte 1.4 mi s Arch Rock (Hwy. 24); Feather River Comment
  UC1186584  Clarkia rhomboidea G. I. Stage, R. W. Thorp 1959-6-21 59 -121 Butte 11.9 mi ne Chico (Highway 32) Comment
  UCD104992  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mile NW of Oak Point. 0.8 mile E of Transfer Ridge, E side of Breakneck Canyon. 1.5 miles N of West Branch Feather River. 1402 Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CHSC56064  Claytonia palustris L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3148 Butte Along West Branch Feather River, 1.5 mi along Humbug Summit Road north of Philbrook Road. 1584 Comment
  JEPS109817  Claytonia palustris Dean W. Taylor 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  SEINET10674969 Image available Claytonia palustris John R. Swanson 1959-7-4 Swanson 490 Butte Butte Co., Jonesvile, marshy, sloping, stream-fed meadow above south bank of Jones Creek. 0.4 km. east of the Jonesville Hotel. 1550 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  CAS-BOT-BC439754  Claytonia perfoliata Lowell Ahart 1982-4-24 3369 Butte About 3/4 mile south-west of the Myers home, Myers Ranch, Sutter Buttes 50 Comment
  SEINET11933184  Claytonia perfoliata M. S. Taylor 1981-1 3807 A Butte Vallombrosia St., E of its jct with Espanade, Chico 30 Comment
  SEINET11933232  Claytonia perfoliata Unknown 1979-1 s.n. Butte Hamlin Canyon Quad. 7.5 ft S of Butte Creek 152 Comment
  SEINET195015  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico CA Comment
  SEINET10929039  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3440 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC56070  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-14 2774 Butte Ewalt Camp; edge of open dry meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  CHSC96814  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  UCR66727  Claytonia sibirica H. F. Copeland 1931-6-9 1515 Butte Jonesville, by Jones Creek 1524 Comment
  CHSC41989  Clematis lasiantha Lowell Ahart 1974-8-7 596 Butte Along the dirt road, about 3 miles east of Marble Creek, near Horseshoe, about 20 miles north-east of Oroville. 914 Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  SEINET10964453  Collinsia sparsiflora var. bruceae Lowell Ahart 1991-4-8 Ahart 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 46 Comment
  POM43045A  Collinsia sparsiflora var. collina C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  UC1586405  Collinsia sparsiflora var. collina Lowell Ahart 1991-8-8 6643 Butte On a steep slopoe on the W side of north Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles N and 2 annd 3/4 miles E of Honcut, about 12 miles SE of Oroville. Foothill Woodland. 45 Comment
  CDA31999  Collinsia tinctoria L. Ahart 2008-5-3 15785 Butte Around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 0 Comment
  CHSC102172  Collinsia tinctoria Lowell Ahart 2009-5-30 15785 Butte On dry soil, around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  JEPS24250  Collinsia tinctoria Helen-Mar Beard 1960-6-20 Butte 150 yds upstream lower boundary sign of Plumas National Forest (along US Hwy 40-A, at base of grade from Jarbo Gap, not far from Big Bar); Feather River Canyon 426 Comment
  UC1594549  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte about 2 air mi n of Oroville (on n side of the dirt road, on n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UC885592  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville (e of Marysville); Feather River Highway Comment
  CHSC1228  Collomia heterophylla V. Holt 1935-5-21 Butte Butte Creek. 67 Comment
  CAS-BOT-BC180255  Comandra umbellata subsp. californica Mrs. J. H. Morrison 1939-5-1 s.n. Butte Durham Comment
  UCD149838  Consolida ajacis Harry A. George 1967-4-24 s.n. Butte Table Mt. Comment
  CHSC76939  Convolvulus arvensis Margie Collins 1894-5-1 Butte Chico. Comment
  CAS-BOT-BC286066  Conyza canadensis Lowell Ahart 1986-10-16 5407 Butte Near the Enterprise Launch Area parking lot, near Lake Oroville, about 1/4 mile south-west of Lumpkin Road, north-east of Oroville 292 Comment
  JEPS117532  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 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
  CHSC89482  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 213 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  JEPS23868  Cordylanthus tenuis subsp. viscidus Rimo Bacigalupi with Howard Whisler 1957-7-26 6045 Butte Butte Meadows 1371 Comment
  CHSC5947  Cornus florida M. MacArthur 1968-6-17 170 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  CHSC33765  Cornus sericea subsp. sericea R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4121 Butte E of Stirling City near E border of county. S and E of andesitic Table Mountain in Little Kimshew Creek. 1584 Comment
  CAS-BOT-BC210518  Cornus sessilis Rimo Bacigalupi 1934-9-2 2325 Butte West fork of Campbell Creek along Chico-Butte Meadows Road, 9 mi. SW. of Butte Meadows 914 Comment
  CAS-BOT-BC210522  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  JEPS98304  Cortaderia selloana Lowell Ahart 2000-9-2 8678 Butte Near 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
  CHSC43140  Corydalis caseana subsp. caseana R. Banchero; R. Schlising 1981-7-25 630 Butte Jones Meadow Ca 5 air miles e of Inskip. 1842 Comment
  CHSC36526  Cotula coronopifolia L. Ahart 1982-7-29 3450 Butte Field n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CHSC112709  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC90630  Crassula tillaea Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11662 Butte Big Chico Creek Ecological Reserve. About 50 yards 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
  CHSC36841  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte On roadcut, w side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC46403  Crucianella angustifolia Lowell Ahart 1989-5-23 6252 Butte About 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC84052  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC93872  Crucianella angustifolia Lowell Ahart 2006-6-9 12645 Butte On the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 1/8 mile east of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 435 Comment
  CHSC31726  Crypsis schoenoides L. Ahart 1974-9-8 633 Butte Bottom of a wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51286  Crypsis schoenoides Lowell Ahart 1990-9-30 6603 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC33408  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3842 Butte E of Feather Falls village, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. 1158 Comment
  UC1594584  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 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
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC39026  Cryptantha milobakeri R. A. Schlising; J. Jokerst, M. Foster 1983-5-24 4413 Butte Bald Rock Dome in e-central part of county. 975 Comment
  CHSC10546  Cryptantha rostellata Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10529783  Cryptogramma crispa subsp. acrostichoides Mary Susan Taylor 1979-7-21 Taylor 2151 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC45268  Cucurbita foetidissima Vernon Oswald 1984-8-20 1652 Butte Midway Rd. at Butte Creek s of Durham. 45 Comment
  CAS-BOT-BC85568  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte South of road to Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CDA13881  Cupressus macnabiana G. F. Hrusa, T. D. Wilfred 1997-5-7 13740 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC20108  Cupressus macnabiana M. S. Taylor 1975-5-9 568 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 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
  CHSC3294  Cupressus macrocarpa M. L. Hillier 1966-3-6 Butte Chico City Cemetery next to school yard of Chico Jr. High School. Comment
  JEPS93811  Cuscuta californica Lowell Ahart 1998-7-19 8048 Butte along Hurleton Swedes Flat Road 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  POM183161  Cuscuta californica H. F. Copeland 1930-8-26 1326 Butte Jonesville, above hotel. 1677 Comment
  RSA718086  Cuscuta californica L. Ahart 2006-7-16 12959 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1436 Comment
  UC600774  Cuscuta californica H. F. Copeland 1930-7-28 1323 Butte near head of So. Willow Creek (neigborhood of Jonesville); Jonesville 1828 Comment
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC80753  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte Large vernal pool, east of the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  UC1191662  Cuscuta obtusiflora var. glandulosa Herbert L. Mason and Verne Grant 1946-8-14 13021 Butte Sacramento Outing Club Butte Sink Comment
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Oct 6 2011
  CHSC48363  Cuscuta pentagona Vernon Oswald 1988-6-22 3512 Butte Hwy 99, 0.6 mi s of Dry Creek. Comment
  CHSC78508  Cuscuta pentagona Lowell Ahart 2000-9-4 8681 Butte North of a large pond 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. 32 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
  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
  JEPS119884  Cynosurus echinatus Lowell Ahart 2012-6-2 18142 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  JEPS113689  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC45156  Cyperus difformis Lowell Ahart 1974-10-20 665 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC96943  Cyperus difformis Lowell Ahart 2007-7-8 14268 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  UCD141025  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CHSC25335  Cyperus eragrostis M. P. Hayes 1977-8-13 34 Butte Butte College Campus, football playing fields near a wet standpipe. Intersection of Pentz and Clark Roads. 91 Comment
  CHSC68385  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte Along Durham-Pentz Road 0.7 mi east of Clark Road. 118 Comment
  JEPS115191  Cyperus eragrostis Lowell Ahart 2009-6-19 15950 Butte 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
  OBI49299  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 mi E of Honcut 137 Comment
  UCD141069  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte along Durham-Pentz Road 0.7 mile east of Clark Road. 118 Comment
  CHSC108132  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC66365  Cyperus erythrorhizos Vernon H. Oswald 1996-6-20 7828 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 2, Sanctuary II. 33 Comment
  CHSC61068  Cyperus esculentus Vernon H. Oswald 1993-8-9 5780 Butte Arroyo Chico. Hwy. 99 offramp at E. 1st Ave. (NW corner), Chico. 64 Comment
  CHSC94647  Cyperus flavescens Lowell Ahart 2006-9-28 13378 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
  JEPS120159  Cyperus flavescens Lowell Ahart 2012-9-28 18474 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  CDA38969  Cyperus flavescens L. Ahart 2000-8-23 8663 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  RSA695518  Cyperus fuscus L. Ahart 2000-7-23 8603 Butte About 12 mi (air) SW of Chico, near a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mi SE of Ord Ferry, about 2 mi SE of Ordbend. 32 Comment
  CHSC31451  Cyperus niger L. Ahart 1980-7-29 2511 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 750 Comment
  CAS-BOT-BC113842  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC113850  Cyperus niger var. capitatus Lowell Ahart 1981-9-19 3181 Butte Arch Rock Tunnel, Hwy 70 550 Comment
  CHSC68405  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1838 Butte Within the City of Chico; growing in the lawn between Bidwell Mansion and Holt Hall of CSU, Chico. 59 Comment
  CAS-BOT-BC114080  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  CHSC31459  Cyperus squarrosus L. Ahart 1980-7-29 2513 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 750 Comment
  RSA0106563  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte On the northeast part of Horsehoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CAS-BOT-BC114203  Cyperus strigosus Lowell Ahart 1987-7-17 5832 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CDA13825  Cyperus strigosus G. F. Hrusa, T. D. Wilfred 1996-9-5 13553 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  JEPS122158  Cyperus strigosus Lowell Ahart 2014-7-18 19693 -A Butte Doug Upton property, about 100 yards west of Lone Tree Road, About 2 miles (air) southwest of Palermo. Comment
  RSA754525  Cyperus strigosus L. Ahart 2009-8-3 16256 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  CHSC19696  Cystopteris fragilis L. A. Wright Jr. 1971-3-28 3 Butte Ca. 1/4 mi e on a dirt road, off of Centennial Rd, which passes Hooker Oak Pool. S bank of Big Chico Creek across from the Municipal Golf Course building, ca. 50 ft up the cliff. Comment
  CHSC39806  Cystopteris fragilis Maxey-Jones 1928-3-5 Butte Iron Canyon. Comment
  CHSC57332  Cystopteris fragilis Robert C. Hill 1990-4-10 6 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  JEPS116130  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 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 Highwat 32, about 10 miles northeast of Chico 234 Comment
  UCD136363  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, by Butte Creek. 1550 Comment
  SEINET10535619  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2365 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC101154  Darmera peltata Lowell Ahart 2009-5-15 15714 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
  CHSC76008  Datura stramonium var. tatula Lowell Ahart; Vernon H. Oswald 1999-8-13 8134 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10454657  Daucus pusillus Mary Susan Taylor 1977-6-25 Taylor 1386 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC56765  Delphinium gracilentum Kirsten Tarp 1982-6-6 184 Butte Near Flea Valley. Comment
  CHSC104822  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  POM99220  Delphinium hansenii subsp. hansenii C. C. Bruce 1897-06 1917 Butte [Unspecified] Comment
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Oct 4 2007
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC10790  Delphinium nudicaule Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC24928  Delphinium nudicaule T. L. Reynolds 1976-4-23 54 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  SEINET5338040  Delphinium nudicaule P. A. Lehenbauer 1926-5-26 1239 Butte North Fork Feather River. Comment
  POM196083  Delphinium nuttallianum E. B. Copeland 1929-6-12 1211 Butte chaparral near north Willow Creek. 1524 Comment
  UC426909  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville 1550 Comment
  UCD96105  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada. 1371 Comment
  CHSC56776  Delphinium patens subsp. patens J. D. Jokerst; Lowell Ahart, M. S. Taylor 1980-4-7 567 Butte Edge of Swedes Flat Road, 0.8 mi east of its junction with Oroville-Bangor Hwy, ca 10 mi southeast of Oroville. Comment
  SEINET10536049  Delphinium recurvatum Mary Susan Taylor 1976-5-5 Taylor 1116 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CAS-BOT-BC82876  Dendromecon rigida Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CHSC9126  Deschampsia cespitosa Willis Ball 1970-3-10 69 Butte Along the Skyway to Paradise, about 5 miles after the turn off to Paradise from hwy 99E. On the right side of the road. 182 Comment
  CHSC113954  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC38806  Deschampsia danthonioides Vernon Oswald 1982-4-16 Butte Bidwell Park, Chico, ca. about 800 ft n of Upper Park Rd. on the e side of the intermittent stream which crosses Upper Park Rd. 2.9 mi e of its junction with Wildwood Ave. 134 Comment
  HSC41096  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 1973-4-14 6052 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  UCD62771  Deschampsia danthonioides P. B. Kennedy 1914-5-1 s.n. Butte Chico. Comment
  UCD80539  Deschampsia danthonioides CNPS SN Foothill Team 2005-4-12 SNFN 0077 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  CHSC11980  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville. 1500 Comment
  CHSC94288  Deschampsia elongata Lowell Ahart 2006-7-16 12996 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  SACT000938  Deschampsia elongata 1925-6-5 Butte No collector/determiner listed. Comment
  CHSC97791  Dianthus armeria subsp. armeria L. P. Janeway 2007-8-12 9156 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  POM196108  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  CHSC101769  Dichelostemma congestum Lowell Ahart 2009-4-26 15626 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC51937  Dichelostemma multiflorum L. P. Janeway 1987-6-5 2148 Butte Along the Peavine Cr rd 1.1 mi E of its beginning at the rd along French Cr. 693 Comment
  CHSC2099  Dichelostemma volubile E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  UC143025  Dichelostemma volubile Mrs. R. M. Austin May 1896 836 Butte Iron Canyon Comment
  CHSC43279  Digitaria ischaemum Lowell Ahart 1987-8-30 5858 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
  CDA1971  Digitaria sanguinalis L. Ahart 2002-9-7 9926 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC27252  Digitaria sanguinalis P. Moyer 1971-11-7 67 Butte CSUC Campus. N bank Chico Ck., behind cafe annex. Comment
  CHSC69736  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte About 20 yards north of the South Fork of the Feather River and on the west side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  UCD64139  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On the bottom of North Honcut Creek, ca. 2.7 mi. NE of Honcut. 50 Comment
  CAS-BOT-BC151920  Diplacus douglasii Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CAS-BOT-BC151942  Diplacus douglasii Frances Brown 1935-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC150502  Diplacus grandiflorus Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC44749  Diplacus grandiflorus R. Banchero 1980-6-14 217 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  CHSC1762  Diplacus kelloggii R. Carter 1964-3-23 54 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 25 yds. E of road along rim of table. 60 Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CHSC90254  Diplacus kelloggii Eric M. Haney 1989-4-21 6 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  CAS-BOT-BC153339  Diplacus layneae Lowell Ahart 1989-5-28 6292 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CHSC34720  Diplacus torreyi M. S. Taylor; R. Bacigalupi 1981-4-27 3555 Butte 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. 1005 Comment
  CHSC38709  Diplacus tricolor Vernon Oswald 1983-4-20 357 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
  CAS-BOT-BC136234  Dodecatheon alpinum H. F. Copeland 1920-8-12 120 Butte Jonesville Meadow 1219 Comment
  CHSC4222  Dodecatheon clevelandii subsp. patulum R. Carter 1966-3-22 314 Butte Found ca. 5 mi. NE Orovilla on top Table Mt.; 10 yds off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. Comment
  CHSC81291  Dodecatheon clevelandii subsp. patulum J. Trizzino 2001-2-22 4 Butte North side of Humboldt Road, ca. 0.5 mi east of intersection with Bruch Road, about 300' south of rock wall on grazed area. 112 Comment
  JEPS102537  Dopatrium junceum Vernon H. Oswald 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 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
  CHSC33684  Downingia insignis L. Ahart 1981-5-16 2809 Butte Near rd on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC33700  Downingia insignis L. Ahart 1981-4-6 2748 Butte In a depression se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC112885  Downingia ornatissima var. ornatissima Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 170 ft NW of Larkin Road. 42 Comment
  CHSC8625  Draba verna D. Patton 1968-3-5 72 Butte Collected ca. 1 1/2 mi e of Chico near edge of The Skyway. 91 Comment
  UC1124234  Draperia systyla J. E. Sowder, A. E. Wieslander 1933-6-24 90 Butte 0.5 mi E of Inskip; Chico Quad. 1432 Comment
  RSA129731  Draperia systyla C. G. Albertus 1933-7-26 54 Butte 1/2 mile south of Barnum Mill. Chico Quadrangle. 1372 Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  JEPS108136  Dryopteris arguta Lowell Ahart 2005-11-12 12481 Butte Bank of a wash, about 90 yards northeast of the large parking area by the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 327 Comment
  RSA739621  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Cascade Range Foothills, Canyon drainage on E side of Dark Canyon raod 90 miles N of the gate to the boat ramp into Lake Oroville 396 Comment
  SEINET10966176  Dryopteris arguta Mary Susan Taylor 1980-3-19 Taylor 2389 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  UC632456  Duchesnea indica Lee Richardson 1864-6-3 Butte Richardson's Springs Comment
  UC933297  Dudleya cymosa C. F. Genasci Butte Richardson Springs Comment
  CAS-BOT-BC428076  Dudleya cymosa subsp. cymosa Lewis S. Rose 1945-5-12 45017 Butte Richardson Springs 304 Comment
  CHSC48291  Dysphania ambrosioides Vernon Oswald 1983-7-25 913 Butte River Road at the washout w of Chico. Comment
  UCSB64004  Dysphania ambrosioides Ahart, Lowell 1981-11-6 Butte A little west of the Gray Lodge Waterfowl Management Area Headquarters, about 3/4 mile west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  CHSC42963  Dysphania pumilio Lowell Ahart 1987-7-17 5834 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
  CHSC47672  Dysphania pumilio Lowell Ahart 1989-9-21 6391 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  JEPS106153  Echinochloa colona Lowell Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  CAS-BOT-BC208564  Echinochloa oryzicola Lowell Ahart 1984-9-17 4792 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  CHSC31569  Eclipta prostrata L. Ahart 1974-11-9 677 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC116301  Egeria densa Lowell Ahart 2015-11-18 20653 Butte On the west side of the Feather River, about one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC112424  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  JEPS98375  Eleocharis acicularis Lowell Ahart 2000-10-21 8711 Butte 2 1/4 air miles N of Biggs (100 ft N of Hamilton Road, about 1/8 mi E of Riceton Road, Rice Experiment Station) 30 Comment
  SEINET7583520 Image available Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  SEINET13709911  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8691 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Mi SW of Chico Comment
  CAS-BOT-BC113640  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD49689  Eleocharis acicularis var. occidentalis L. Ahart 2000-9-15 8691 Butte Normal sized plants, on wet bare sand, north of a large pond 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. 32 Comment
  CHSC55611  Eleocharis atropurpurea L. P. Janeway 1986-9-20 1886 Butte Inside the bend in the road at the junction of Chico Butte City Hwy and Road 48. 28 Comment
  UC1564729  Eleocharis bella V. Oswald and L. Ahart 1989-7-21 3869 Butte 1 mi W of Jonesville (confluence of Willow and Colby Creeks, on W side of Colby Creek on N side of Humboldt Road) 1487 Comment
  CHSC31941  Eleocharis bolanderi J. D. Jokerst; R. A. Schlising, B. Banchero 1979-6-16 845 Butte Community of Butte Meadows, ca. 0.1 mi W of the junction of Scout Rd. and Humboldt Rd, N side of the latter. 1341 Comment
  CAS-BOT-BC113565  Eleocharis bolanderi L. P. Janeway 1988-6-19 2822 Butte Small open seepy area along Honey Run Road 0.9 mi SW of Skyway. 411 Comment
  CAS-BOT-BC113583  Eleocharis decumbens Lowell Ahart 1980-7-4 2459 Butte Along Forbestown Road Comment
  CHSC88221  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC38905  Eleocharis engelmannii Vernon Oswald 1983-6-27 775 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 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
  UCD49723  Eleocharis engelmannii Beecher Crampton 1957-9-17 4630 Butte Biggs Rice Exper. Sta. 5 miles northwest Biggs, Butte County. Comment
  CAS-BOT-BC113375  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CHSC11929  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville. In and beside the 'Lily Pond. 1750 Comment
  CHSC68433  Eleocharis macrostachya L. P. Janeway 1986-10-19 1938 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CHSC71405  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte Bottom of a vernal pool, about 1/2 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 408 Comment
  CHSC78197  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte In bog like areas, seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia road, about 2 miles south of Paradise. 548 Comment
  JEPS115999  Eleocharis parishii Lowell Ahart 2009-6-19 15923 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  UC1564776  Eleocharis quadrangulata Vernon Oswald 1989-6-29 3836 Butte located on w. side of Cana Pine Creek Rd. just s. of Tehama Co. line Vandergrift Lake 54 Comment
  CHSC78203  Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte On the north margin of a large wash, 200 yards east of the road crossing, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  RSA716570  Eleocharis quinqueflora L. Ahart 2000-6-29 8542 Butte On the northwest side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  CHSC100885  Eleocharis suksdorfiana L. P. Janeway; Linus Gog 2008-7-19 9438 Butte High Cascade Range. Along the east side of Butte Creek 1.0 air km west of Cherry Hill Campground; just downstream of 'Pat's Meadow. 1399 Comment
  RSA719717  Elymus glaucus Michael A. Vincent, K. Levings 2006-6-29 12894 Butte northeast of Chico along Rt. 32 Comment
  UCD61891  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico meadows. 1219 Comment
  CAS-BOT-BC203422  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  CHSC44175  Elymus glaucus subsp. glaucus V. Oswald; Lowell Ahart 1988-7-29 3642 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CAS-BOT-BC234104  Elymus multisetus Lowell Ahart 1983-6-26 4114 Butte Along Ponderosa Way, ca. 1/8 mi. E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 mi. NE of Oreoville, Sierra Nevada 500 Comment
  CHSC2189  Elymus multisetus H. Silberman; D. Isaac 1949-5-17 Butte S. side of Big Chico Creek, 7 mi. ENE of Chico. 182 Comment
  CHSC43290  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  CHSC68915  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1997-7-11 7744 Butte Road cut, on the north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC12627  Enemion occidentale M. S. Taylor 1974-3-16 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Comment
  CHSC31009  Epilobium brachycarpum M. S. Taylor 1978-9-8 1894 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  SEINET10841098  Epilobium brachycarpum Mary Susan Taylor 1978-9-8 Taylor 1894 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  UC873163  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durhan and Nelson; Butte Creek 53 Comment
  SD51222  Epilobium canum subsp. latifolium Darley F. Howe 1960-9-20 2982 Butte North fork of Feather River, 8 miles from Oroville. 152 Comment
  CHSC28433  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-10-12 372 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 mrt. E. of Big Chico Cr. 213 Comment
  CHSC51005  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC66672  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald; Lowell Ahart 1996-7-22 8078 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 edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  CHSC94256  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2006-7-16 12986 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS115361  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2009-7-9 16003 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS95032  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7926 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  RSA795884  Epilobium foliosum L. Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 miles northwest of the West Branch Bridge across Lake Oroville. 307 Comment
  CHSC46574  Epilobium glaberrimum subsp. glaberrimum Vernon Oswald 1987-7-16 3132 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. On the edge of the creek. 1487 Comment
  JEPS87376  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 1993-7-22 7091 Butte e side of campground rd about 1/4 mi nw bridge across Fall River (about 6 air mi ne of Feather Falls); Fall River 1036 Comment
  POM46486  Epilobium minutum C. C. Bruce 1897-06 s.n. Butte Butte Creek Comment
  RSA695398  Epilobium pygmaeum L. Ahart 2003-6-23 10313 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  UC725503  Epilobium torreyi A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  SEINET3070848 Image available Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville 1300 Comment
  CHSC42507  Equisetum laevigatum Lowell Ahart 1987-5-27 5713 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA285081  Equisetum laevigatum J. T. Howell 1975-6-15 51072 Butte Skyway between Chico and Paradise at Butte Creek. 61 Comment
  CHSC97685  Eragrostis hypnoides Lowell Ahart 2007-11-3 14559 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  SEINET4571500  Eragrostis leptostachya R. McKee 1907-10-19 14898 Butte Chico Comment
  CAS-BOT-BC213615  Eragrostis mexicana subsp. virescens John Thomas Howell 1961-9-22 36787 Butte North Fork of Feather River NE of Pulga, Sierra Nevada Comment
  CAS-BOT-BC292432  Eragrostis pectinacea Lowell Ahart 1984-8-19 4790 Butte About 5 miles SW of Oroville.Area where gravel is removed, N of the state burrow area, W of Pacific Heights Road. 40 Comment
  CHSC42142  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-11-24 4811 Butte Along the edge of Middle Honcut, Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. 32 Comment
  JEPS76254  Eragrostis pectinacea var. pectinacea W. L. Jepson 1939-8-17 19465 Butte Feather River bottom near Oroville; Feather River bottom 45 Comment
  CAS-BOT-BC278504  Eragrostis pilosa Lowell Ahart 1987-5-27 5697 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS113670  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC92524  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-10 1217 Butte South of Middle Fork Feather River. Generally on the east side of the canyon, along road 22N62. UTM 10 S 650439, 4397298. 950 Comment
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  UC600729  Ericameria bloomeri H. F. Copeland 1920-8-25 383 Butte Jonesville Comment
  JEPS19841  Ericameria parryi var. latior Rimo Bacigalupi with Howard Whisler 1957-7-26 6039 Butte 2.2 mi sw of Nimshew (at e canyonside of Butte Creek, along road berm on the Humbug Road); Butte Creek 579 Comment
  CHSC54174  Erigeron foliosus var. hartwegii Vernon H. Oswald; Lowell Ahart 1991-5-31 4637 Butte Lake Oroville State Recreation Area, along the roadbed on the south side of Thermalito Diversion pool, at the drainage on the northeast side of Sycamore Hill. 76 Comment
  CAS-BOT-BC300616  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch Comment
  CHSC48149  Erigeron inornatus var. inornatus Vernon Oswald; Lowell Ahart 1987-7-1 3050 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the west side of Scotts John Creek. 1828 Comment
  CHSC11841  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 489 Butte Above Jonesville. 2000 Comment
  JEPS122288  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC58253  Erigeron philadelphicus Lowell Ahart 1992-5-9 6758 Butte Along a stream, east of Cherokee Road, about 2 (air) miles north of Oroville. 91 Comment
  CHSC6755  Erigeron philadelphicus Marilyn Lee 1968-4-19 114 Butte On E. side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Table Mt. Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 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
  CAS-BOT-BC216043  Eriodictyon californicum Mrs. J. H. Morrison 1932-4-20 s.n. Butte Durham Comment
  UC1594552  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte About 2 air mi north of Oroville (on north side of dirt road on north side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC45365  Eriogonum lobbii Vernon Oswald 1985-5-28 1784 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. Growing in sandy soil on an open granitic outcrop. 1011 Comment
  CAS-BOT-BC259399  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  UC1594721  Eriogonum marifolium Lowell Ahart 1992-7-29 6892 Butte about 1 mi e, about 1/2 mi nw of Lotts Lake Carr mine 1828 Comment
  CHSC39079  Eriogonum marifolium var. marifolium R. A. Schlising 1981-6-20 4098 Butte E of Inskip and E of Jones Meadow. 1767 Comment
  CHSC42028  Eriogonum nudum var. pubiflorum Lowell Ahart 1986-8-15 5391 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  UC176184  Eriogonum nudum var. pubiflorum A. A. Heller 1913-9-16 11141 Butte hills near Big Chico Creek (e of Chico) Comment
  CHSC51894  Eriogonum umbellatum var. ahartii L. P. Janeway 1987-6-20 2267 Butte Top of Lumpkin Ridge 0.6 mi S of the Feather Falls-Lumpkin Ridge Rd. 1249 Comment
  SEINET10937585  Eriogonum ursinum Mary Susan Taylor 1979-7-21 Taylor 2145 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC11921  Eriogonum ursinum var. ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville. 2050 Comment
  CHSC39090  Eriogonum ursinum var. ursinum R. A. Schlising 1980-5-12 3587 a Butte About 2 miles s of Pulga along Highway 70; serpentine outcrop above highway. 609 Comment
  CHSC11838  Eriophyllum lanatum E. B. Copeland 1930-7-11 492 Butte Jonesville. 1550 Comment
  CHSC100919  Eriophyllum lanatum var. croceum R. A. Schlising; Arthur Dawson, Don Burk 1982-6-2 4280 Butte North of Oroville and north of Concow Reservoir. At roadside. Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC40478  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 4997 Butte West of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  JEPS94822  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CAS-BOT-BC40749  Erysimum capitatum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC21019  Erysimum capitatum var. capitatum M. S. Taylor 1975-4-29 544 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC8584  Erythranthe bicolor B. Jackson 1968-5-5 26 Butte Taken ca. 1 mi S. of Cohasset Grammar School on E. side of Cohasset Rd. along small, slow moving stream area unfenced. 609 Comment
  SEINET8256604  Erythranthe breweri A. A. Heller 1914-6-22 11495 Butte Sierra Nevada at Chico Meadows. 1219 Comment
  CHSC40889  Erythranthe filicifolia Lowell Ahart 1985-5-22 5027 Butte Along Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CHSC44784  Erythranthe glaucescens R. Banchero 1980-3-16 67 Butte Along Neal Rd 5.4 mi NE of its jct with Hwy 99, Ca 2.8 mi SW of the town of Paradise. 274 Comment
  CHSC105164  Erythranthe guttata Christopher T. Ivey 2007-4-30 367 Butte Table Mountain, along small creek. 396 Comment
  CHSC38701  Erythranthe guttata Vernon Oswald 1983-6-3 625 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion channel. 79 Comment
  CHSC44738  Erythranthe guttata R. Banchero 1980-6-17 248 Butte Along Coutolenc Rd 1.7 mi S from its upper jct with the Skyway, 4.8 mi N of its lower jct with the Skyway. 853 Comment
  CHSC84402  Erythranthe guttata Lowell Ahart 2003-7-23 10436 Butte On cliffs and along a road ditch, at the generator, Forbestown Reservoir, about 4 1/2 miles (air) northeast of Forbestown. 554 Comment
  CHSC90162  Erythranthe guttata Evelyn Jo Baker 1984-3-28 4 Butte E side of Hwy 70, 1 mi se of intersection with Hwy 149, 6 mi nw of Oroville. 57 Comment
  CHSC46685  Erythranthe lewisii V. Oswald; L. Ahart 1989-8-15 3945 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1780 Comment
  SEINET8399965  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  CHSC44741  Erythranthe nasuta R. Banchero 1980-4-7 92 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with the Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and the Hurleton-Swedes Flats Rd. 373 Comment
  CHSC44766  Erythranthe primuloides R. Banchero 1980-6-26 274 Butte Banchero Meadows, 1.1 mi S of Inskip along the Skyway, 4.5 mi N of Stirling City. 1426 Comment
  CHSC50845  Erythranthe tilingii Vernon H. Oswald; Lowell Ahart 1990-7-19 4376 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1920 Comment
  SEINET10469663  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3518 Butte T23N R4E sw sec 36, Pulga SW quad. Open rocky serpentine ridge, n side of Concow Rd, ca. 3/4 mi s of its jct with Ponderosa Way/Rim Rd, ca. 6 air mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 2800 ft. 853 Comment
  SEINET10834239  Erythronium grandiflorum var. giganteum R. M. Austin Austin 5 Butte Butte Creek Comment
  CHSC2477  Erythronium multiscapideum W. Fitzwater 1958-4-19 Butte Chico canyon, Chico area. 365 Comment
  UC843861  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CAS-BOT-BC504529  Erythronium multiscapideum Lowell Ahart 1982-4-8 3272 Butte Along Swedes Falt Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  SEINET10469550  Erythronium multiscapideum Mary Susan Taylor 1981-4-10 Taylor 3526 Butte T22N R4E sw sec 12, Pulga SW quad. 8 side of private rd. ca. 1/8 mi E of 4 mi N of Jarbo Gap on Hwy 70, ca. 19 air mi N of Oroville. Yellow Pine Forest; 3000 ft. 914 Comment
  UCD149852  Erythronium multiscapideum Harry George; William Anderson 1965-4-20 s.n. Butte Feather River Canyon. Comment
  CAS-BOT-BC402637  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  CAS-BOT-BC402638  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 Comment
  CHSC3564  Eschscholzia lobbii R. D. Briggs 1966-3-6 63 Butte North end of Bidwell Park golf course, Chico. Comment
  RSA144838  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  RSA0020538  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76deg.) of Biggs 58 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
  JEPS124186  Euphorbia peplus Lowell Ahart 2015-3-24 19959 Butte Southeast part of Upper Bidwell Park, about 100 yards south of where the trail comes out to the old road and Highway 32, on the west side of the old road, about 6 miles (air) northeast of Chico. Comment
  CHSC37087  Euthamia occidentalis L. Ahart; M. S. Taylor 1982-10-11 3860 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 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
  JEPS116069  Festuca arundinacea Lowell Ahart 2009-5-30 15797 Butte On dry soil, along a small stream, meadow, about 20 yards south of the fence and about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  JEPS120928  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  CHSC106593  Festuca elmeri B. Castro; L. P. Janeway 2001-3-17 1267 Butte Along USFS Rd 23N28, about halfway between Coyote Gap and Big Bar Mtn. 1249 Comment
  CHSC74163  Festuca occidentalis B. Castro; E. Hubert 1996-7-18 682 Butte Ca 4.5 air mi NW of town of Brush Creek, ca 1.5 air mi W of French Creek, on S side of USFS Rd 22N31 and just E of Rd 22N34Y. In clearcut area on either side of tributary to Bidwell Creek. 865 Comment
  RSA700272  Festuca occidentalis L. Ahart 2004-7-23 11298 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook, Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  CHSC116332  Festuca perennis Lowell Ahart 2015-10-20 20563 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC64256  Festuca rubra S. C. Morey 1983-8-1 649 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC73716  Festuca rubra H. Durio 1995-8-1 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  RSA754865  Festuca subulata L. Ahart 2008-6-2 14807 Butte South side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  SEINET10474662  Filago californica Mary Susan Taylor 1980-5-27 Taylor 2661 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
  UC1562318  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte 0.5 air mi sw of Humbug Summit (near the headwaters of the north branch of Willow Creek, 0.6 mi w of Humbug Road via the logging road just s of Cold Springs); Willow Creek 1969 Comment
  CHSC47050  Frangula purshiana R. A. Schlising; P. Broyles 1987-6-26 4520 Butte 1.2 mi s of Inskip, along Skyway. 1417 Comment
  CHSC1083  Fraxinus dipetala V. Holt 1931-4-24 Butte Forest Ranch. 548 Comment
  JEPS108969  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 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
  CAS-BOT-BC205977  Fremontodendron decumbens Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CHSC28967  Fritillaria affinis J. D. Jokerst 1980-2-24 450 Butte E branch of Mud Cr ca 0.5 mi E of Richardsons Springs. 243 Comment
  CAS-BOT-BC130320  Fritillaria eastwoodiae A. A. Heller 1939-4-8 15367 Butte About 4 miles from Magalia on the Coutoleno Road Comment
  CHSC88989  Fritillaria eastwoodiae L. Hanson 1987-4-27 295 Butte Plumas National Forest. Near De Sabla. 822 Comment
  SEINET10469654  Fritillaria eastwoodiae Mary Susan Taylor 1979-3-20 Taylor 1947 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10469566  Fritillaria micrantha Lowell Ahart 1983-4-14 Ahart 3933 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC92557  Fritillaria recurva L. P. Janeway 2005-4-25 8366 Butte Northern High Sierra Nevada. Plumas National Forest; ridgetop northern end of Rocky Ridge; just above Rim Road (Ponderosa Way) 200 m east-southeast of junction with Concow Road; head of upper side drainage of Flea Valley Creek. 988 Comment
  UCD121707  Galium aparine Robert Kehlor 1951-5-6 s.n. Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  CHSC47047  Galium bifolium R. A. Schlising; L. Janeway 1988-7-16 4605 Butte N part of county, S of Humbug Summit at upper reaches of Willow Creek. 1950 Comment
  CHSC38657  Galium bolanderi Vernon Oswald 1983-5-9 461 Butte Upper Bidwell Park, Chico. 100 ft W of the east terminus of Yahi Trail (near the turn-around at the E end of the park). 207 Comment
  JEPS119899  Galium murale Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18104 Butte Along the west side of the horse trail, north of Table 25, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCSB63626  Galium nuttallii subsp. nuttallii Kirkpatrick, R. 1972-4-23 Butte ca. 30 yds. s Hwy. 32 and ca. 2 mi e Crown Point Rd. 609 Comment
  CHSC39493  Galium parisiense Lowell Ahart 1983-6-21 4061 Butte Along Bloomer Hill Road, 1/8 mi west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 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
  CHSC47480  Galium porrigens var. tenue Lowell Ahart 1976-5-21 1109 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 air miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  CHSC113472  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 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
  CHSC73819  Galium triflorum B. Castro 1997-6-13 743 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1066 Comment
  UC392192  Galium triflorum E. B. Copeland July 1929 Butte Jonesville 1550 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC303383  Gamochaeta ustulata Lowell Ahart 1985-5-31 5036 Butte About 0.25 mile W of the Enterprise Launch Area about 25 ft above the high water line of Lake Oroville, NE of Oroville 274 Comment
  CHSC27238  Gardenia jasminoides P. Moyer 1971-9-25 1 Butte CSUC Campus. E side of University Service Bldg. along walkway to bridge. 60 Comment
  CHSC96555  Garrya fremontii L. P. Janeway; Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada. South side of the ridge between Sawmill Peak and Jordan Hill Road; 600 m east-southeast of the Sawmill Peak lookout. 954 Comment
  CAS-BOT-BC282602  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CHSC51363  Gaultheria ovatifolia Vernon H. Oswald; Lowell Ahart, L. Hanson 1990-8-14 4440 Butte French Creek on the north side of Forest Rd. 21N16, ca. 0.75 miles west of the north end of Sly Creek Reservoir. 1219 Comment
  CHSC105537  Gayophytum heterozygum Lowell Ahart 2010-9-21 17215 Butte On damp bare soil, 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 Philbrood Reservoir. 1917 Comment
  UCD103714  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Comment
  RSA718070  Gayophytum heterozygum L. Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  SBBG127506  Gayophytum heterozygum L. Ahart 2010-9-21 17215 Butte E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi (air) NE of Jones Meadow, ca. 2 1/2 mi (air) SE of Philbrook Reservoir 1917 Comment
  CHSC105513  Gentianopsis simplex Lowell Ahart 2010-9-28 17245 Butte On wet humus, west edge of a 10 acre meadow, about 100 yards east of the poor dirt road, 10 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. 1886 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
  CHSC62557  Gentianopsis simplex B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 157 Butte Meadow along the Skyway (Humbug Summit Rd) ca 5.5 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  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
  CHSC62112  Geranium dissectum B. Castro 1987-5-28 127 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 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
  CHSC23642  Geranium molle M. S. Taylor 1976-3-30 1039 Butte On s side of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC30866  Geranium molle J. D. Jokerst 1979-3-23 1158 Butte Common in the shaded portions of drainage ravines leading off the W edge of Mt. Top of North Table Mt., W edge of mt, immediately N of the waterfalls of the S fork of Coal Cr. 365 Comment
  CDA31943  Geranium purpureum L. Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown Comment
  CDA25864  Geum macrophyllum T. C. Fuller 1962-7-12 9177 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC26851  Geum macrophyllum M. S. Taylor; M. Hayes 1978-6-24 1639 Butte On Ernies Island, at jct with Old Humboldt Rd and Butte Creek, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CDA13726  Gilia capitata subsp. mediomontana G. F. Hrusa, T. D. Wilfred 1997-6-27 13904 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  RSA754853  Gilia capitata subsp. pedemontana L. Ahart 2009-5-30 15784 Butte About 60-100 yards north of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile W of Highway 32, about 10 miles NE of Chico. 269 Comment
  RSA21312  Gilia capitata subsp. pedemontana Carl B. Wolf 1937-5-13 8657 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC10594  Gilia tricolor Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC24736  Gilia tricolor L. Casto 1976-4-28 18 Butte 50 yd s of Skyway, ca. 4 mi e of intersection of Hwy 99 and Skyway. 182 Comment
  CHSC2482  Gilia tricolor W. Fitzwater 1958-4-3 Butte Oroville plains. Comment
  CHSC100984  Gilia tricolor subsp. tricolor L. P. Janeway 2008-4-2 9245 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 178 Comment
  CHSC32136  Githopsis specularioides L. Ahart 1974-4-24 427 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC62540  Githopsis specularioides B. Castro 1993-5-17 464 a Butte Near the S end of Rocky Ridge, ca 30 ft w of Rim Road. 877 Comment
  CHSC51270  Glinus lotoides Lowell Ahart 1990-10-5 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CAS-BOT-BC434994  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miels south-west of Oroville 36 Comment
  UCD85123  Glyceria elata August L. Hormay Date Unknown s.n. Butte 3 miles below Butte Meadow on creek. Comment
  CHSC38493  Glycyrrhiza lepidota Vernon Oswald 1983-6-2 607 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 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
  CHSC31594  Gnaphalium palustre L. Ahart 1972-6-21 115 Butte Peter Ahart Ranch, Honcut. 45 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
  UCD80064  Gnaphalium palustre CNPS SN Foothill Team 2005-5-4 SNFN 0199 b Butte City of Chico, Bidwell Ranch, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  CHSC117593  Gnaphalium stramineum B. Castro; Tom Bouillon 2008-7-10 1761 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. Growing on flat bench between W levee and the creek within recently planted, irrigated riparian restoration area. 57 Comment
  CHSC33666  Goodyera oblongifolia R. E. Preston 1981-7-28 114 Butte Ca. 5.0 km se of Butte Meadows. 1590 Comment
  UCD138957  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte ca. 0.2 mile north of Lost Creek Reservoir Dam, ca., 2.2 miles northwest of Strawberry Valley. 1100 Comment
  CHSC65447  Grindelia camporum var. camporum Vernon Oswald 1990-10-15 4468 Butte Arroyo Chico. East Ave just west of the Esplanade, Chico. Roadside. 54 Comment
  CAS-BOT-BC305285  Grindelia hirsutula Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC305287  Grindelia hirsutula John Thomas Howell 1962-6-15 37481 Butte Magalia 731 Comment
  CAS-BOT-BC305288  Grindelia hirsutula John Thomas Howell 1962-6-15 37427 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CHSC97732  Grindelia hirsutula var. davyi Lowell Ahart 2007-11-3 14576 Butte On both sides of the paved road to the Lime Saddle Campground, about 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5 1/2 miles southeast of Paradise. 335 Comment
  CHSC24503  Hackelia californica M. S. Taylor 1976-6-28 1167 Butte Ca. 4 mi se of Jonesville, ca. 2 ft n of Scotts John Creek Rd. 1828 Comment
  UC1560382  Hackelia californica E. Joyal and D. Mehlman 1988-7-3 1308 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  RSA77829  Hackelia californica F. W. Peirson 1926-6-21 6771 Butte Butte Meadow, Humboldt Road. Comment
  RSA496349  Hackelia nervosa Elaine Joyal, D. Mehlman 1988-7-3 1309 Butte Butte-Tehama Cos. line: Lassen National Forest, e side of Humboldt summit. 2100 Comment
  CHSC96365  Hamamelis vernalis L. P. Janeway; Erin Brandy 2007-5-9 8977 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC43609  Hazardia whitneyi var. whitneyi Vernon Oswald 1985-9-2 1936 Butte Flea Valley--Sawmill Peak Rd. (V-Line) 0.9 mi ne of Jordan Hill--Magalia Rd. 950 Comment
  CHSC71256  Hedypnois cretica Lowell Ahart 1998-7-1 8033 Butte On the banks of a wash, 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SEINET3450915  Hedypnois cretica Unknown 2003-5-15 10179 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  CAS-BOT-BC306290  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles south of Cherokee on road to Oroville Comment
  CAS-BOT-BC306539  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  UC478462  Helianthella californica subsp. nevadensis E. B. Copeland 1931-6-22 695 Butte at the Summit; Jonesville Comment
  CHSC95076  Helianthella californica var. nevadensis L. P. Janeway 2006-6-25 8700 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CDA13913  Helianthus bolanderi G. F. Hrusa, T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC35087  Heliotropium europaeum R. A. Schlising 1981-11-3 4220 Butte Central part of county, at jct of Messilla Valley Road and Pentz Road. At roadside. 130 Comment
  UCD119454  Heliotropium europaeum L. Ahart 1983-9-17 4426 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  CHSC26762  Hemizonia congesta subsp. luzulifolia M. S. Taylor; M. Hayes 1977-8-16 1445 Butte On s side of Pentz Rd near culvert, ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC30761  Hemizonia congesta subsp. luzulifolia M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  CHSC64072  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte Ca 50 ft E of Hwy 99 ca 4 mi N of E. Biggs Rd, near a seep at a pumping station just W of the Thermalito Afterbay levee. 32 Comment
  UC897728  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte near Dunham Comment
  SEINET10474720  Hemizonia parryi subsp. rudis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5146 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CDA14228  Herniaria hirsuta subsp. cinerea B. Villegas, L. Bezark, H. Riley 1998-5-14 s.n. Butte Oroville Wildlife Area, Thermalito Afterbay, B2 Duck Dam, near Hwy 162 and Wilbur Rd. Comment
  CHSC114980  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  JEPS105997  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC34695  Hesperevax acaulis var. robustior M. S. Taylor 1980-5-15 2634 Butte Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  CHSC44869  Hesperevax acaulis var. robustior Lowell Ahart 1979-5-29 1907 Butte Near a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  POM36296  Hesperevax caulescens C. C. Bruce 1897-06 2112 Butte Fields Comment
  SD8553  Hesperolinon micranthum R. M. Austin 1883-1 Butte Butte Co. Comment
  UCD110549  Hesperolinon micranthum P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  POM319115  Hesperolinon micranthum Patricia Wilder 1971-6-23 5183 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  UCR198049  Heteranthera rotundifolia John 1983-8-16 s.n. Butte Sacramento Valley, Biggs Rice Field Station, north of Biggs, 2.5 mi west of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
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Oct 10 2010
  CHSC62101  Heterocodon rariflorum B. Castro 1987-5-21 122 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E of Altatina Drive. 463 Comment
  POM173731  Heterocodon rariflorum H. F. Copeland 1928-8-18 945 Butte Neighborhood of Jonesville; near Butte Creek. 1524 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10460739  Heterocodon rariflorum Taylor 1980-5-31 Taylor 2770 Butte East side of Kunkle Reservoir, about 0.25 mile east of Pentz-Magalia Highway, about 3 miles south of Paradise. T22N R4E SW 1/4 Sec. 31 442 Comment
  SEINET10460750  Heterocodon rariflorum Mary Susan Taylor 1981-4-28 Taylor 3567 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC3313  Heteromeles arbutifolia M. Gregg 1966-2-21 36 Butte On Neal Rd. 1/2 mile above the water fountain. On side of road. 304 Comment
  UC114259  Heteromeles arbutifolia Mrs. R. M. Austin Jun 1887 Butte Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  RSA0074384  Heterotheca grandiflora L. Ahart 2005-11-20 12491 Butte Along road, on the west side of the Poe Power House, east of North Fork of the Feather River. 276 Comment
  CHSC42687  Hibiscus lasiocarpos var. occidentalis Vernon Oswald 1987-8-17 3221 Butte Rancho Aguas Frias. Nelson-Blavo Hwy 3 mi w of Nelson. 36 Comment
  SD8927  Hieracium albiflorum Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC55328  Hirschfeldia incana John Thomas Howell 1962-6-16 37570 Butte Sierra Nevada. Magalia. 731 Comment
  CDA42950  Hirschfeldia incana L. Ahart 2012-10-28 18533 Butte Marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC33099  Hirschfeldia incana R. E. Preston 1981-1-20 31 Butte On the shoulders of River Rd., ca. 0.6 km se of Chico Cr., ca. 8.7 km wsw of Chico. Comment
  CHSC38037  Hirschfeldia incana R. E. Preston 1982-11-13 367 Butte At roadside, Nelson Rd, ca. 100 yds w of Butte Creek, ca. 4 mi w of Nelson. 30 Comment
  CAS-BOT-BC280716  Holcus lanatus Lowell Ahart 1981-9-15 3156 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  SEINET10528759  Hookera coronaria A. Arthur Heller 1938-5-22 Heller 151 Butte Plentiful near the Chico airport in red clay soil derived from disintegrated lava rock, in the Upper Sonoran Life Zone. Comment
  CHSC49553  Hordeum brachyantherum subsp. brachyantherum Vernon Oswald 1984-7-2 1343 Butte Humbug Rd. 1.7 mi s-w of Humbug Summit. In a meadow. 1859 Comment
  JEPS122157  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte About 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC284987  Hordeum depressum Lowell Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CHSC46275  Hordeum depressum Vernon Oswald 1989-4-20 3747 Butte Gray Lodge Wildlife Area, field on s side of Rutherford Rd and e side of the road to Parking Areas 12 and 13. 19 Comment
  SEINET10968248  Hordeum depressum Mary Susan Taylor 1978-5-7 Taylor 1598 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC26788  Hordeum marinum subsp. gussoneanum M. S. Taylor; M. Hayes 1978-5-7 1598 Butte Richvale vernal pools, on w side of Hwy 99, ca. 20 mi s of Chico. 30 Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  CAS-BOT-BC536255  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC536257  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC45282  Hosackia crassifolia var. crassifolia Vernon Oswald 1987-6-23 3014 Butte High Lakes Rd. 2.1 mi (odometer) n of Philbrook Rd. 1828 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  CHSC48517  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-26 2930 Butte Rancho Bosquelo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). On an old channel of the river. 48 Comment
  CHSC58920  Hypericum anagalloides Lowell Ahart 1992-8-2 6898 Butte Growing on damp dark clay soil on the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC2503  Hypericum concinnum W. Fitzwater 1958-5-17 Butte Humboldt Rd., Chico area. 792 Comment
  CHSC11965  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 Butte Jonesville. 1550 Comment
  JEPS110536  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  CHSC51264  Hypericum mutilum Lowell Ahart 1990-10-3 6627 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
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Mar 31 2009
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  CDA42906  Hypericum perforatum L. Ahart 2012-6-21 18215 Butte On the south side of Big Chico Creek, about 120 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC111143  Hypericum perforatum Lowell Ahart 2012-6-21 18215 Butte On the south side of Big Chico Creek, about 120 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC37395  Hypericum perforatum R. A. Schlising 1980-8-31 3972 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC401219  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  POM195674  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  CAS-BOT-BC133563  Iris hartwegii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  RSA137405  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22527 Butte State Highway 32, 11.5 miles south from Lomo 945 Comment
  SEINET12046587  Iris hartwegii Unknown 1977-1 45 Butte ca 3 ft. to E side of Vilas Rd. and 0.3 mi NE of jct of Cohasset Hwy and Vilas Rd., Cohasset 945 Comment
  CHSC2201  Iris hartwegii subsp. hartwegii W. Reed 1939-5-1 Butte Paradise 548 Comment
  CHSC52481  Iris macrosiphon Stacy Scott 1981-4-14 Butte 1.2 km E of hwy323 and Santos Wayjct on Santos Way, ca 11.2 km NNE of Chico. Comment
  CHSC57536  Iris macrosiphon Suzanne Hermansen 1991-4-20 24 Butte Ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 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
  CAS-BOT-BC61871  Isoetes nuttallii Lowell Ahart 1982-6-15 3563 Butte About 8 miles east of Feather Falls, about 1 1/2 miles east of Camp 18 1000 Comment
  CHSC83900  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CHSC83671  Isolepis setacea John Dittes 2002-7-9 2 -13 Butte Northern High Sierra Nevada; Plumas National Forest, between Hartman Bar Ridge and Mountain Spring House Ridge, on slope above confluence of South Branch of the Middle Fork Feather River and Pinchard Creek, ca. 0.2 air miles south-southeast of Whisky Hill. 1280 Comment
  CAS-BOT-BC112644  Isolepis setacea Lowell Ahart 1989-5-28 6285 Butte South of Oregon Gulch road, ca. 1/2 mi N of the Cemetery, ca. 1 1/4 mi W of Rocky Point 335 Comment
  CAS-BOT-BC340243  Jensia rammii Lewis S. Rose 1937-6-10 37357 Butte Hurleton 579 Comment
  CHSC69474  Jensia rammii James D. Jokerst 1982-5-28 1584 Butte Concow Basin W of Concow Creek (and Concow Rd.) ca. 0.25 mi N of Concow Lake. 609 Comment
  SEINET10937859  Juglans hindsii Mary Susan Taylor 1975-5-6 Taylor 559 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC4568  Juncus C. Glascock 1965-1-27 197 Butte Along banks of OWID ditch ca. 20 yds downstream from the Meadowview Drive crossing. Ca. 2 mi. e of Oroville. 22 Comment
  UCD141290  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2.5 miles east of Honcut. 140 Comment
  CHSC7194  Juncus balticus M. I. Moore 1969-4-26 16 Butte Upper Bidwell Park, ca. 1000 yds. nw of Salmon Hole - Big Chico Creek. 106 Comment
  CHSC69727  Juncus bufonius var. occidentalis Lowell Ahart 1997-10-24 7935 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, stand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  JEPS105998  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC61349  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte On the south side of the dirt road, about 200 yards south-west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  JEPS114882  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north 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
  RSA730000  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14000 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
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Mar 20 2009
  CDA42850  Juncus effusus var. effusus L. Ahart 2011-8-19 17636 Butte About 30 yards east of Know-nothing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. Comment
  CDA39195  Juncus effusus var. pacificus L. H. Heinricks 1964-6-4 s.n. Butte T.M. Morrill property, 405 Circle Drive, Oroville. 0 Comment
  CHSC96910  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
  CHSC112329  Juncus exiguus Lowell Ahart 2013-7-9 18830 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC47555  Juncus howellii Lowell Ahart 1984-7-19 4749 Butte In a small meadow, along Retson Road, about 1 1/2 miles southeast of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles northeast of Stirling City. 1371 Comment
  JEPS122156  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte South of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  SEINET10472451  Juncus leiospermus Mary Susan Taylor 1980-5-15 Taylor 2630 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC47563  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte On the bottom of a vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC103739  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16706 Butte About 100 yards west of the fence, about 1/4 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC111365  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-4 17984 Butte About 100 feet southwest of the lone oak tree, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  CHSC93494  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12603 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 327 Comment
  JEPS104276  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10093 Butte High water line of vernal pool, ca 70-100 feet sw of section corner pipe, ca 1/8 mi sw of tall Digger Pine on s edge of Beatson Hollow, ca 1 1/4 mi nw of iron gate and fence, nw of Cherokee Rd, North Table M., ca 7 mi (air) n of Oroville. 299 Comment
  RSA712863  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12602 Butte About 2 3/4 miles west of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles (air) north of oroville. 280 Comment
  CAS-BOT-BC110772  Juncus mertensianus Lowell Ahart 1984-7-19 4755 Butte About 0.5 mile east of Bald Mountain, about 5 miles northeast of Stirling City. 1750 Comment
  POM183194  Juncus nevadensis H. F. Copeland 1930-7-27 1358 Butte Jonesville. Blueberry Meadow. 1524 Comment
  CHSC49621  Juncus orthophyllus Vernon Oswald 1987-7-16 3130 Butte Coon Creek just w of Bull Hill Rd. (Skyway), between Inskip and Butte Meadows. On the edge of the creek where it crosses meadow. 1539 Comment
  UCD141681  Juncus oxymeris Robert E. Preston 1982-7-16 337 Butte Crane Valley. Comment
  CHSC41354  Juncus parryi R. A. Schlising 1981-6-28 4116 Butte E of Stirling City, w of Little Kimshew Creek at white basaltic Table Mt. 1859 Comment
  JEPS117673  Juncus tenuis Lowell Ahart 2010-9-21 17225 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC96907  Juncus triformis Lowell Ahart 2007-6-12 14075 Butte Seeps, about 50 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
  JEPS118353  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC109962  Juncus trilocularis P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25705 Butte 0.5 air miles NE of Little Bald Rock, NE of and below Bean Creek Road 0.6 road miles from bald Rock road, northern Sierra Nevada Highlands. 1005 Comment
  JEPS122063  Juncus trilocularis Lowell Ahart 2014-5-21 19531 Butte About 100 yards west from Ponderosa Way, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC49629  Juncus uncialis Vernon Oswald 1986-4-20 1973 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In the bed of a vernal pool. 32 Comment
  CHSC97204  Juncus usitatus Lowell Ahart 2007-7-27 14398 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  JEPS121895  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte Below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  RSA123366  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte 8 miles southeast of Chico on Neal Road 122 Comment
  UC1562418  Keckiella breviflora var. glabrisepala Lowell Ahart 1990-5-21 6477 Butte about 4.5 mi sw Oroville (about 0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  SEINET13711424  Kickxia elatine Lowell William Ahart, Lowell William Ahart 1999-1 8132 Butte 12 Air Mi SW of Chich, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC41996  Kumlienia hystricula Lowell Ahart 1975-3-7 707 Butte Along a small stream, along Ponderosa Way, about 2 miles south of the Ponderosa Dam, north-west of Forbestown. 426 Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  CAS-BOT-BC340327  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC340328  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC340331  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  OBI68607  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte Sacramento Valley. 282 Chico Rd, Oroville Comment
  CAS-BOT-BC340449  Lactuca saligna John Thomas Howell 1959-9-20 34704 Butte Feather River Highway at West Branch bridge Comment
  UC828864  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham Comment
  UC217501  Lagophylla glandulosa H. M. Hall 1917-5-13 10299 Butte Butte Creek Comment
  CAS-BOT-BC341299  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC341316  Lagophylla glandulosa David D. Keck 1932-7-2 1612 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CHSC35667  Lamarckia aurea R. E. Preston 1982-4-22 257 Butte Slope at lakeside; Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC7100  Lasthenia californica Nancy Wiseman 1969-4-17 Butte 50 yds n of Skyway ca. 1 mi e of Chico. Comment
  CHSC56753  Lasthenia fremontii J. D. Jokerst 1980-3-26 Butte East side of Chico; 100 m northeast of junction of Bruce Road and Skyway. Comment
  UCSC004639  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte T17N, R4E, southwest 1/4 Section 4, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 26 Comment
  CAS-BOT-BC352921  Lasthenia glaberrima Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo. 35 Comment
  CHSC93346  Lasthenia gracilis Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
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Jan 19 2011
  CHSC45907  Lathyrus angulatus Lowell Ahart 1978-5-15 1727 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC213338  Lathyrus jepsonii subsp. californicus H. E. Brown 1897-4-15 213 Butte Near Clear Creek Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  UCD106438  Lathyrus sulphureus A. A. Heller 1919-5-17 13162 Butte Banks of the Feather River near Stirling. Comment
  CHSC10618  Layia fremontii Lowell Ahart 1970-4-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8140  Layia fremontii B. Hamilton 1969-4-20 105 Butte Found 1 mile south of Pentz Rd on Highway 99 along roadside. Comment
  UC473555  Layia fremontii L. S. Rose 1931-4-12 Butte Honcut Comment
  CAS-BOT-BC321753  Layia fremontii A. A. Heller 1914-3-28 11235 Butte Hills 8 miles N of Oroville Comment
  CAS-BOT-BC321776  Layia fremontii Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC103014  Lemna minuta Lowell Ahart 2009-10-8 16410 Butte On the south side of the road, about 50 yards east of Parking Lot 15, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  HSC97027  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the S side of Sheldon Avenue at the intersection with Larkin Rd., ca. 1 mi. S of Gridley Rd., ca. 2 air mi. SE of Gridley. 28 Comment
  CHSC43795  Lemna trisulca Vernon Oswald 1984-6-11 1287 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. In a pool on the edge of the meadow. 1414 Comment
  CAS-BOT-BC527295  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville 1550 Comment
  CDA42868  Leontodon saxatilis subsp. longirostris L. Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC71305  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte West side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  JEPS95462  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte 12 mi S of Oroville (Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  SEINET10448588  Lepidium nitidum Mary Susan Taylor 1975-3-10 Taylor 410 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
  CHSC38144  Lepidium strictum J. D. Jokerst 1983-5-12 1755 Butte Table Mountain. Along the dirt road that goes due north of Cherokee Rd at its intersection with the easy edge of the mesa. 426 Comment
  CHSC39595  Lepidium strictum Lowell Ahart 1983-4-10 3929 Butte Along the edges of dirt roads, about 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  CHSC65685  Lepidium strictum Vernon H. Oswald 1996-3-22 7248 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 7.2. Ranch and levee roads at this location. 33 Comment
  UC1594675  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte near s side Oroville Dam spillway (on the top of Oroville Dam); Oroville Dam 274 Comment
  JEPS94959  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte 1.5 mi n Bridge across West Branch of Lake Oroville (w side Hwy 70, just n of Rich Gulch Rd) 396 Comment
  CHSC117322  Leptochloa fusca subsp. fascicularis B. Castro 2008-7-15 1759 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of rice field in adjacent ditch. 31 Comment
  CHSC38595  Leptosiphon bicolor Vernon Oswald 1983-4-6 288 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and S). 256 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC41368  Leptosiphon filipes B. Castro 1982-4-21 26 Butte Vernal pool area, 0.3 mi w of jct with Hwy 99 on Broyles Rd, ca 10 mi nw of Chico. 60 Comment
  CHSC105177  Leptosiphon harknessii B. Castro; L. P. Janeway 1999-8-1 1022 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. 1749 Comment
  JEPS122142  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC341742  Lessingia nana Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  RSA0045592  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC56386  Leucothoe davisiae M. S. Taylor 1982-6-24 4744 Butte Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70 1158 Comment
  UC1031359  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte top of Table Mountain Table Mountain Comment
  CAS-BOT-BC444382  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte On the flat top of Table Mountain 304 Comment
  CHSC27995  Ligusticum californicum M. S. Taylor 1978-7-18 1679 Butte On w side of Hwy. 32 on edge of Yellow Pine Forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC27186  Ligustrum japonicum P. Moyer; R. Pessner 1971-10-1 22 Butte CSUC Campus. N bank Chico Ck., along So-wil-len-no Ave. 60 Comment
  CHSC106062  Ligustrum obtusifolium Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17045 Butte Near the north edge of Big Chico Creek, south of Picnic Area 40, Lower Bidwell Park, Chico. 70 Comment
  RSA767487  Lilaea scilloides Lowell Ahart 2010-6-9 16789 Butte Bottom of small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5.5 air miles northeast of Oroville. 399 Comment
  CAS-BOT-BC509475  Lilium kelleyanum E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  CAS-BOT-BC509477  Lilium kelleyanum Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  CAS-BOT-BC509478  Lilium kelleyanum H. F. Copeland 1920-8-29 152 Butte Jonesville Woods 1219 Comment
  CHSC43046  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-5 2139 Butte French Cr Rd 6.2 mi from OroQuincy Hwy and Stanwood Saddle. Along Ram Cr ca 0.2 mi up from mouth at French Cr. 609 Comment
  CHSC46238  Lilium washingtonianum Pauleen Broyles 1987-8-5 1074 Butte Ca 6 km n of Inskip, ca. 0.3 km n of jct. Of Skyway and Bull Hill Rd. 1530 Comment
  CHSC31351  Limnanthes alba P. Lynn Lester 1980-4-14 21 Butte Ca. 3 yds e of Meridian Rd, ca. 0.1 mi n of Wookey Rd, ca. 0.9 mi s of Pine Cr, ca. 3 mi e of Hwy 99, ca. 7 mi nnw of Chico. 88 Comment
  UC869472  Limnanthes alba A. A. Heller 1917-4-15 12674 Butte ten mi n Chico 64 Comment
  JEPS19590  Limnanthes alba Harry A. Dutton 1921-4-25 Butte sw Oroville Comment
  SEINET10495211  Limnanthes alba Mary Susan Taylor 1976-4-27 Taylor 1094 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC87554  Limnanthes alba subsp. alba R. D. Fischer 2004-5-2 124 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located approx. 800' south of gated end of park property off 10 Mile House Road. Located, east bank, 20' from Big Chico Creek. 236 Comment
  UC1609426  Limnanthes alba subsp. alba Lowell Ahart 1993-5-17 6951 Butte about 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CHSC59327  Limnanthes alba subsp. versicolor Darby Kremer 1992-4-18 21 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 Comment
  UCD116504  Limnanthes douglasii Harriet Sindal 1970-4-25 2 Butte on Cherokee Road, 4.7 miles north from its intersection with Nelson Avenue and Clark Road, west from gate, North Table Mountain. 335 Comment
  UCD22634  Limnanthes douglasii Joseph Laferriere 1982-4-18 22 Butte Table Mountain, streambank 1/2 mile east of road, 5 miles north of Oroville. 384 Comment
  RSA262376  Limnanthes douglasii subsp. douglasii Gary L. Carlin 1971-4-10 4 Butte Cherokee Road, north rim of Table Mountain, 6.5 miles north of Oroville. Comment
  JEPS117706  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  UCD80441  Limnanthes douglasii subsp. nivea CNPS SN Foothill Team 2005-4-6 SNFN 0098 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville. 366 Comment
  CHSC1011  Limnanthes douglasii subsp. rosea P. Delaplane 1965-3-23 42 Butte H. Wurlitzer Ranch; ca. 13 mi NW of Chico. W. of Hwy 99E N. 60 Comment
  CHSC24768  Limnanthes douglasii subsp. rosea P. J. Welch 1976-4-12 9 Butte At edge of vernal pool ca. 0.3 mi n of the Skyway and ca. 25 yds e of Notre Dame Blvd., within Chico city limits (se corner). 60 Comment
  CAS-BOT-BC45925  Limnanthes floccosa subsp. californica A. A. Heller 1917-4-15 12672 Butte Ten miles north of Chico 64 Comment
  CHSC29030  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-27 519 Butte Less than 1 mi E of Chico Muni Airport. 67 Comment
  CHSC67560  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3045 Butte Ca. 150 m W of Cohasset Rd. ca. 1/6 mi S of junction with Keefer Rd. Comment
  UC1748335  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3046 Butte roadside ditch adjacent to Keefer Rd., ca. 0.25 mi W of Cohasset Hwy Comment
  UCD116434  Limnanthes floccosa subsp. floccosa Jeff Dole 1986-4-27 s.n. Butte 1 mile north of Cayton Creek. Comment
  JEPS120764  Limnophila X ludoviciana Lowell Ahart 2013-9-20 19062 Butte About 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about 1 mile southeast of the Rice Experiment Station. Comment
  SEINET10964491  Limosella Mary Susan Taylor 1980-5-31 Taylor 2764 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
  CHSC103693  Limosella aquatica Lowell Ahart 2010-5-14 16657 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  UC1181372  Linanthus ciliatus Lewis S. Rose 1945-5-12 45029 Butte Richardson Springs 304 Comment
  JEPS48319  Linanthus filipes Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2687 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  SEINET12318323  Linanthus filipes E. D. Osman 1978-1 20 Butte ca 7.8 mi N of Chico and 200 E of Cohasset Hwy 76 Comment
  UC196267  Linanthus parviflorus A. A. Heller 1914-4-3 11258 Butte 8 mi n Oroville Comment
  CHSC40896  Lindernia dubia var. anagallidea Lowell Ahart 1985-11-5 5226 Butte 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile wes of the Ponderosa Dam. 274 Comment
  CHSC94583  Lindernia dubia var. anagallidea Lowell Ahart 2006-9-11 13292 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
  JEPS95879  Lindernia dubia var. anagallidea Lowell Ahart 1999-8-13 8131 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA726854  Lindernia dubia var. anagallidea L. Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, aout 3/4 miles north and 2.5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CHSC42723  Linnaea borealis var. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 61/2 miles north-east of Feather Falls. 1219 Comment
  CHSC55619  Lipocarpha L. P. Janeway 1986-10-19 1929 Butte In rocks and sand along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC45134  Lipocarpha aristulata Vernon Oswald 1987-8-13 3216 Butte 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
  CHSC110975  Liquidambar styraciflua Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte Lawn, on the northeast side of Sycamore Pool, Lower Bidwell Park Chico. 61 Comment
  CHSC23698  Lithocarpus densiflorus M. S. Taylor 1976-5-5 1110 Butte On n side of Hwy 70, ca. 2 mi n of Jarbo Gap, ca. 17 mi ne of Oroville. Comment
  CHSC88996  Lithocarpus densiflorus H. Gray 2003-6-3 Butte Plumas National Forest. Bald Rock trail parking area. 762 Comment
  CAS-BOT-BC123099  Lithophragma bolanderi Joseph William Blankinship 1893-1-1 s.n. Butte Marysville Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CHSC2456  Lithophragma parviflorum var. parviflorum R. Carter 1965-3-13 161 Butte Found on North Table Mt. ca. 45 yds. SE of point where old Cherokee Rd. comes over rim of table at base of lava cliffs. 304 Comment
  CHSC87432  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-1 95 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along the beginning of 10 Mile House Road near parking area at Hwy 32. 469 Comment
  POM91966  Lithophragma parviflorum var. trifoliatum C. C. Bruce 1898-03 1844 Butte Plains [no specific locality given] Comment
  CHSC32647  Lithospermum californicum M. S. Taylor; L. Hanson 1981-3-16 3403 Butte Just off tractor-fire road, ca. 1/4 mi n of 21N80, ca. 1/2 mi nw of its jct with Zink Rd, ca. 2 air mi sw of Brush Creek. 944 Comment
  CHSC44472  Logfia gallica Lowell Ahart 1988-5-12 5998 Butte Field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC65889  Logfia gallica Vernon H. Oswald 1996-4-20 7403 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC101666  Lolium multiflorum Lowell Ahart 2009-4-26 15639 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS117707  Lolium temulentum Lowell Ahart 2010-6-1 16761 Butte Both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico 172 Comment
  CHSC32603  Lomatium caruifolium var. denticulatum Don Kroessig 1979-4-15 1 Butte SE of Chico at the intersection of the Skyway and Bruce Road. 76 Comment
  CHSC77473  Lomatium dasycarpum subsp. tomentosum Anna Pinsky 2000-4-30 32 Butte Upper Bidwell Park, between Bear and Salmon Hole, 50 ft. above Big Chico Creek, on rock outcrop. Comment
  CHSC87778  Lomatium dissectum var. multifidum Paul Maslin 2004-4-30 30 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
  UC1532356  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  POM78413  Lomatium macrocarpum C. C. Bruce 2056 Butte Foothills Comment
  SEINET12120810  Lomatium tomentosum M. S. Taylor 1980-1 2742 Butte along Rocky Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CHSC32635  Lomatium utriculatum M. S. Taylor; L. Hanson 1981-4-2 3477 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  CHSC40435  Lomatium utriculatum Lowell Ahart 1985-4-29 4884 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  JEPS48084  Lomatium utriculatum P. C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2692 Butte at w. side Pulga Bridge (N. Fork Feather R.); , Pulga Bridge Comment
  POM319309  Lonicera Patricia Wilder 1971-6-23 5197 Butte One mile E of Forbestown on Challenge cut-off Road, near junction with Forbestown Road. East of Oroville.; Mt. Range: West slope of the Sierra Nevada; Drainage Area: Feather River. 823 Comment
  UC600683  Lonicera conjugialis H. F. Copeland 1920-7-29 460 Butte Jonesville woods Jonesville Comment
  JEPS115565  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail 381 Comment
  CHSC116219  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  SEINET10465044  Lonicera japonica Mary Susan Taylor 1975-6-22 Taylor 784 Butte California State University, Chico, campus. 61 Comment
  CAS-BOT-BC198557  Lotus Herbert L. Mason 1927-5-10 3711 Butte Cherokee Mine, Table Mt. northeast of Oroville Comment
  CAS-BOT-BC200896  Lotus M. S. Taylor 1982-6-24 4734 Butte Se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  SEINET10452682  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-19 Taylor 3808 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  SEINET10452685  Lotus grandiflorus var. macranthus Lowell Ahart 1985-5-15 Ahart 4982 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  UC204729  Lotus humistratus A. A. Heller 1914-5-8 11377 Butte the Clear Creek to Paradise grade Comment
  SEINET5736943 Image available Lotus micranthus Lowell Ahart 1985-1 5033 Butte Lake Oroville, 0.125 mile E of Enterprise Launch Area and about 0.5 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  UC1129111  Lotus oblongifolius var. oblongifolius P. L. Johannsen 1936-7-17 943 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET3696861 Image available Lotus purshianus A. A. Heller 1938-7-20 15289 Butte Upper end Snag Lake, 7 miles east of Chaparral 1524 Comment
  RSA754821  Lotus purshianus var. purshianus L. Ahart 2009-6-19 15930 Butte N side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 380 Comment
  JEPS93819  Ludwigia palustris Lowell Ahart 1998-6-30 8013 Butte about 7 air mi n of Oroville (w of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC21155  Ludwigia peploides M. S. Taylor 1975-10-3 925 Butte In slough at bridge over Big Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC61054  Ludwigia peploides subsp. peploides Vernon H. Oswald 1993-7-29 5736 Butte Gray Lodge Wildlife Management Area W of Gridley, 0.3 mi S of Rutherford Rd. on the first levee road E of the headquarters complex. In a drainage ditch. 19 Comment
  CHSC65560  Lupinus albicaulis L. P. Janeway 1995-6-6 4771 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  SBBG29098  Lupinus albicaulis E. B. Copeland 1929-7-17 Butte above Jonesville 609 Comment
  CHSC31442  Lupinus albicaulis var. shastensis L. Ahart 1980-9-10 2642 Butte Along the edge of the road ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC31938  Lupinus arbustus J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1031 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit adjacent to large mudlflow, northern most portion of county. 1828 Comment
  UCD106673  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte Summit above Jonesville. 2133 Comment
  SFV11554  Lupinus bicolor M. L. Vincent 1964-4-8 499 Butte Pentz Road, 0.25 miles west of Barnum Road. Comment
  SEINET10452029  Lupinus bicolor subsp. pipersmithii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4291 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC98967  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  HSC66228  Lupinus densiflorus Thomas A. Welgan 1979-4-15 9 Butte 4.5 mi N of Oroville, 5 ft. W of Cherokee Mtn. Rd. 305 Comment
  SEINET10485237  Lupinus densiflorus var. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20n r3e ne1/4ne1/4 sec 22. Oroville quad. Nw corner of jct of hwy 70 with Hwy 149, at wicks corner, ca 4 mi. N of oroville. Assoc: trifolium hirtum. 91 Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  CHSC36838  Lupinus latifolius var. columbianus M. S. Taylor; L. Ahart 1981-8-16 4197 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CDA27451  Lupinus latifolius var. columbianus T. C. Fuller 1962-7-12 9173 Butte 2 miles east of Butte Meadows. 0 Comment
  UC1594541  Lupinus microcarpus var. densiflorus Lowell Ahart 1992-5-9 6762 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  CHSC33129  Lupinus microcarpus var. microcarpus J. D. Jokerst 1981-4-29 1301 Butte Adjacent to entrance road to Butte College Campus from Pentz Road. 76 Comment
  CHSC90365  Lupinus nanus Thomas E. Lewis 1978-3-29 7 Butte Ca. 200 m ne of Salmon Hole, ca. 5.5 km from the start of Upper Bidwell Park Rd, Chico. 230 Comment
  UC1076230  Lupinus nanus Herbert L. Mason 1927-5-10 3712 Butte ne of Oroville Table Mountain (Cherokee Mine); , Cherokee Mine Comment
  CHSC28154  Lupinus nanus var. latifolius J. D. Jokerst 1979-5-5 210 Butte At base of uppermost rimrock, N. of Big Chico Cr., 3 mi. E of Chico. Comment
  UC865363  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte bluff above Salmon Hole (e of Chico); bluff above Salmon Hole, e of Chico Comment
  CHSC38513  Lupinus polycarpus Vernon Oswald 1983-3-31 237 Butte Upper Bidwell Park, Chico, near the s-w edge of the parking lot at Salmon Hole (1.4 mi e of the power lines). 152 Comment
  POM276488  Lupinus polyphyllus subsp. superbus Lyman D. Benson 3958 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  POM219418  Lupinus sellulus var. artulus E. B. Copeland 1931-7-3 651 Butte Jonesville, Colby Canyon. 1600 Comment
  SEINET10452165  Lupinus vallicola Mary Susan Taylor, L. Hanson 1981-4-30 Taylor 3572 Butte T19N R5E ne sec 13, Forbestown quad. NW corner of jct of Forbestown Rd and Lumpkin Rd (Feather Falls turnoff), ca. 10 air mi E of Oroville. 1800 ft. 549 Comment
  SEINET10969784  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4381 Butte Along truex rd in foothill woodland, .5 mi w of its jct with hwy 70, ca 10 air Mi n of oroville. With petrorhagia velutina, solanum parishii. Comment
  CAS-BOT-BC436564  Luzula cascadensis H. F. Copeland 1920-8-29 145 Butte Jonesville meadow 1219 Comment
  CDA34742  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  SEINET3872267  Luzula comosa var. laxa Lowell Ahart 2010-9-21 17203 Butte About 1/5 of a clump, on damp humus, under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek; about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. Red FIr Forest.; 0 1918 Comment
  UC1594729  Luzula comosa var. laxa Lowell Ahart 1992-8-26 6845 Butte About 1/2 mile north of the Carr Mine about 2 (air) miles south of Snow Mountain 1767 Comment
  CHSC33717  Luzula comosa var. subsessilis M. S. Taylor 1981-4-8 3513 Butte W side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of its jct with Hwy 70 at Jarbo Gap. 914 Comment
  CHSC50064  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC52715  Luzula macrantha L. P. Janeway 1987-5-20 2081 Butte North Fork Feather River; above Hwy 70 3.1 mi NE of the Pulga bridge. 472 Comment
  CHSC93361  Luzula macrantha Lowell Ahart 2006-4-28 12547 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  RSA0060489  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir. 1020 Comment
  CAS-BOT-BC441205  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC441207  Luzula macrantha Lowell Ahart 1988-3-27 5940 Butte Aboaut 1/10 mile N of the bridge across the North Fork of the Feather River, about 2 miles SE of Jarbo Gap 335 Comment
  SEINET10905125  Luzula macrantha Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3521 Butte T22N R4E nw sec 2, Pulga SW quad. E side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on hwy 70, ca. 21 air mi n of Oroville. Yellow Pine Forest, on granitic soils; 2400 ft. 731 Comment
  JEPS120110  Luzula subsessilis Lowell Ahart 2012-4-9 17823 Butte Along South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. Comment
  SEINET10905122  Luzula subsessilis Mary Susan Taylor 1976-4-24 Taylor 1076 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC102975  Lycium barbarum Lowell Ahart 2009-7-4 16000 Butte Under the palm trees, at parking lot 2, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 22 Comment
  CHSC110328  Lycopus americanus B. Castro; Margie Graham 2006-8-25 1605 Butte Sacramento Valley. Ca 1.9 mi W of Highway 99 and 1 mi E of Richvale, immediately N of Richvale Hwy in Cherokee Canal. On E side of canal abt 120 ft in from toe of E levee. 32 Comment
  CHSC31790  Lycopus americanus L. Ahart 1973-8-13 270 Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 45 Comment
  CDA5133  Lythrum hyssopifolia L. P. Janeway, B. Castro 1999-6-4 6453 Butte Sacramento Valley; East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. Comment
  CHSC66078  Lythrum hyssopifolia Vernon H. Oswald 1996-5-23 7631 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  CAS-BOT-BC342705  Madia elegans A. A. Heller 1914-8-13 11684 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC342707  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC342708  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  UC65347  Madia elegans A. A. Heller 1902-5-10 5518 Butte Clear Creek P.O. Clear Creek Comment
  RSA755346  Madia elegans subsp. densifolia L. Ahart 2009-7-9 16015 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) W of Highway 32, about 10 miles NE of Chico. 204 Comment
  UCR188503  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2007-10-7 13078 Butte Northern Sacramento Valley, along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  HSC96907  Madia exigua L. Ahart 2006-6-9 12650 Butte E side of Bardees Bar Rd., S of the small stream, about 1/4 mi. SW of the poor bridge scross the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. (air) SW of Pulga 404 Comment
  SEINET10475532  Madia exigua Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4050 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET10971119  Madia exigua Lowell Ahart 1984-6-8 Ahart 4666 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  SEINET10904899  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2707 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
  POM98246  Mahonia dictyota C. C. Bruce 1897-04 1818 Butte Big Chico Comment
  SEINET10833624  Mahonia dictyota Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3553 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  CHSC47078  Maianthemum racemosum R. A. Schlising; L. Janeway 1988-7-1 4555 Butte NE part of county, NE of Snow Mountain. Comment
  CAS-BOT-BC512735  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC512737  Maianthemum stellatum C. R. Quick 1953-8-11 53 -99 Butte Rag Dump meadow south east of Stirling City Comment
  CAS-BOT-BC347384  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  CAS-BOT-BC347379  Malacothrix floccifera John Thomas Howell 1955-6-15 30510 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC4055  Malva nicaeensis J. Wheeler 1967-5-20 25 Butte Sparse in a lot immediately west of 248 Serviss St., Durham. 47 Comment
  SEINET10479979  Malva parviflora Mary Susan Taylor 1982-4-28 Taylor 4374 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC8557  Marah fabacea var. agrestis M. MacArthur 1968-6-18 211 Butte E side Big Chico Creek and just S of bridge by PSA bld., Chico State College. 60 Comment
  CHSC28647  Marah watsonii M. S. Taylor 1979-3-20 1960 Butte Along old road on n side of Feather River. Ca. 1/4 mi n of Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  RSA441249  Marah watsonii K. M. Stocking 28 Butte 0.9 mile down from Paradise on short cut to Chico. [W of Paradise] 457 Comment
  CHSC101809  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC27241  Marrubium vulgare P. Moyer 1972-5-7 196 Butte CSUC Campus. N bank Chico Ck., e of L.S. Bridge. 60 Comment
  CHSC51060  Marrubium vulgare Pauleen Broyles 1987-4-29 1016 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Near Pine Creek just below its confluence with Singer Creek. Comment
  SEINET10498135  Marrubium vulgare Mary Susan Taylor 1975-2-16 Taylor 386 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  CDA42740  Marsilea T. C. Fuller 1958-4-15 4798 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC5140  Marsilea vestita P. Delaplane 1965-3-23 45 Butte H. Wurlitzer Ranch; ca. 13 mi. NW of Chico, W of Hwy 99E N. Butte Co. 60 Comment
  CHSC20050  Matricaria discoidea M. S. Taylor 1975-4-11 456 Butte Along Upper Bidwell Park Road, near Salmon Hole, Upper Bidwell Park, Chico. Comment
  CHSC33121  Matricaria discoidea M. S. Taylor 1981-5-15 3743 Butte Jct of 22N92 and 23N00.1, ca. 1.5 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 975 Comment
  CDA31958  Medicago polymorpha L. Ahart 2009-5-8 15662 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC31876  Medicago polymorpha L. Ahart 1976-5-2 1086 Butte North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CDA4225  Medicago scutellata H. K. Wagnon 1956-6-1 Butte In vicinity of Chico Plant Intro. Gardens. 0 Comment
  CAS-BOT-BC269381  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  UCR21798  Melica californica Paul Reisentz 1979-5-13 s.n. Butte 4 mi south of Cresta Power House on Hwy 70, 5 mi north of Jarbo Gap Gas Station on the Feather River. Comment
  SEINET10968169  Melica californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4108 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  SEINET11688662  Melica californica K. R. Pearson 1983-1 19 Butte ca 200 m NNE of Chico Creek, 2 km NW of diversion dam, 3 km NNE of Chico 150 Comment
  CHSC110224  Melica californica var. californica L. P. Janeway 2012-6-2 10837 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CAS-BOT-BC282050  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CHSC38079  Melica fugax R. E. Preston 1982-7-21 350 Butte Ca. 1 mi SE of Philbrook Reservoir. 1828 Comment
  CHSC46303  Melica geyeri Vernon Oswald 1989-5-28 3787 Butte Logging road paralleling the w side of Butte Creek, 3.1 mi s of Humboldt Rd (near Butte Meadows). Bordering the road. 1292 Comment
  JEPS110218  Melica torreyana Lowell Ahart 2006-5-19 12632 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  UC1137010  Melica torreyana August L. Hormay 1929-6-24 Butte e of Chico (Deer Creek, near Murphy); Deer Creek Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  HSC96978  Melilotus indicus L. Ahart 2005-5-2 11772 Butte E side of the Sacramento River, NW of Parrott Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 mi. SW of Chico. 26 Comment
  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
  RSA0080125  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte West of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC110327  Mentha arvensis B. Castro; Margie Graham 2006-8-25 1608 Butte Sacramento Valley. Ca 3 mi W of Highway 99 and 2 mi S of Richvale and ca 250 ft N of Hwy 162 in Cherokee Canal.. On E side of canal abt 120 ft in from toe of E levee. 29 Comment
  CHSC94182  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  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
  JEPS118060  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  SEINET7042712  Micropus californicus A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  CHSC56091  Micropus californicus var. californicus R. L. Ondricek-Fallsheer 1983-5-7 166 Butte On rim of cliff, tip of Flatiron Ridge; ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CHSC96563  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  RSA725057  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC26734  Microseris acuminata M. S. Taylor; M. Hayes 1978-4-14 1562 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  SEINET10475279  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 Ahart 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC2400  Microsteris gracilis R. Carter 1965-3-9 152 Butte Found on Old Cherokee Rd., Oroville, .8 mi N of intersection with Oregon Gulch Rd. On W bank above road. 243 Comment
  CHSC44330  Microsteris gracilis Lowell Ahart 1988-3-27 5936 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET10969159  Microsteris gracilis Mary Susan Taylor 1978-6-24 Taylor 1643 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC37139  Mimetanthe pilosa L. Ahart 1982-8-22 3752 Butte Along edges of North Honcut Creek, a little sw of the Peter Ahart Ranch, ca. 1 mi n and 2 and 3/4 mi e of Honcut. 50 Comment
  JEPS117224  Mimulus 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
  RSA535780  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge. Griffith residence, 4.4 mi NE of Keefer Road along cohasset Hsy, then 0.4-0.6 mi s along private dirt road; 396 Comment
  RSA0044692  Mimulus cardinalis A. A. Heller 1923-8-14 13813 Butte [No location data on label] Comment
  JEPS5550  Mimulus glaucescens R. F. Hoover 1936-5-21 1158 Butte 3 mi n Chico Comment
  POM5060  Mimulus glaucescens A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  CHSC118883  Mimulus guttatus Christopher T. Ivey 2017-5-27 387 Butte Centerville Road, about 1.5 km NE of Honeyrun bridge, large wet meadow N side of road, growing among Typha latifolia, Rubus cf. armeniacus. 119 Comment
  JEPS114732  Mimulus guttatus Lowell Ahart 2008-5-12 14737 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
  LA209359  Mimulus guttatus E. B. Copeland; 1929-7-28 sn Butte Jonesville 1500.0 Comment
  SEINET8399961  Mimulus guttatus Lowell Ahart 2006-7-25 13063 Butte about 20 yards east of the poor dirt road, abotu 100 yards south of he cabin, about 3/4 mile (air) northwest of Jonesville, abotu 5 miles (air) northeast of Butte Meadow. 1569 Comment
  HSC43097  Mimulus kelloggii Maralyn O'Meara 1974-4-20 301 Butte Table Mtn. 305 Comment
  UC726286  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte Table Mountain Comment
  UC445157  Mimulus microphyllus Mrs. R. M. Austin Apr. 1899 85 Butte plains e Chico Comment
  UC886302  Mimulus moniliformis A. A. Heller 1917-7-26 12829 Butte Butte Meadows 1280 Comment
  POM219092  Mimulus moschatus H. F. Copeland 1927-9-3 361 Butte Jonesville. Comment
  RSA754817  Mimulus moschatus L. Ahart 2009-6-30 15978 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
  POM298033  Mimulus moschatus var. longiflorus A. A. Heller 1917-7-26 12829 Butte Butte Meadows. 1280 Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  UC886324  Mimulus primuloides A. A. Heller 1914-6-22 11497 Butte Chico Meadows 1219 Comment
  RSA0116256  Mimulus primuloides var. primuloides Lowell A. Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  POM5144  Mimulus torreyi Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  JEPS107746  Mimulus tricolor Lowell Ahart 2005-5-28 11825 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
  RSA21489  Mimulus tricolor Carl B. Wolf 1937-5-14 8671 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  CHSC55486  Minuartia californica Dan Morgan 1991-4-21 16 Butte Indian Springs Rd., .3 mi w of Neal Rd., Paradise. 243 Comment
  POM101123  Minuartia californica C. C. Bruce 1897-06 1959 Butte Fields near Chico. Comment
  CHSC29782  Minuartia douglasii M. S. Taylor 1980-5-27 2696 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC75488  Minuartia douglasii G. F. Hrusa; T. D. Wilfred 1997-5-7 13721 Butte Sierra Nevada. Serpentine outcrop on SSE slope 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
  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
  CHSC48258  Moehringia macrophylla Vernon Oswald 1984-4-9 1127 Butte Feather Falls Trail near Frey Creek, 1.25 trail mi. from the trail head at the end of Bryant Ravine Rd. 560 Comment
  JEPS115056  Mollugo verticillata Lowell Ahart 2007-11-3 14569 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
  CAS-BOT-BC219945  Monardella breweri subsp. lanceolata Lowell Ahart 1984-6-8 4662 Butte Along Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CAS-BOT-BC219947  Monardella breweri subsp. lanceolata Lowell Ahart 1980-6-19 2389 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC219948  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Near the edges of Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville 500 Comment
  CHSC52210  Monardella odoratissima L. P. Janeway; R. A. Schlising 1988-7-16 2999 Butte Between Colby Mtn Rd and Willow Cr, ca 1/2 mi NW of Jonesville. 1524 Comment
  CHSC94485  Monardella odoratissima subsp. glauca Lowell Ahart 2006-7-16 12960 Butte Near the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  UC600442  Monardella odoratissima subsp. pallida E. B. Copeland 1931-7-12 Butte Ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  CAS-BOT-BC220451  Monardella sheltonii John Thomas Howell 1976-7-14 51812 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  SEINET8555279 Image available Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station Comment
  UC2062462  Monochoria vaginalis Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16443 Butte Rice Experiment State NW of Biggs, drained field at NE corner of Hamilton & Riceton roads. Comment
  CHSC50334  Montia chamissoi Vernon Oswald; Lowell Ahart 1990-5-29 4262 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. Locally abundant on wet gravel on the edge of the creek. 1316 Comment
  CHSC57135  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-22 3055 Butte Upper Coon Hollow; just below the saddle between Coon Hollow and Chips Creek. 1920 Comment
  SEINET10572657  Montia diffusa Mary Susan Taylor 1981-5-5 Taylor 3615 Butte T20N R6E se/se sec 11 Forbestown quad. Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi S of Feather Falls trailhead, ca. 0.5 air mi N of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  JEPS106292  Montia fontana Lowell Ahart 2004-3-1 10700 Butte near low rocks, large rocks to the south, about 1 mi NE of Honcut Cemetary, about 4 air mi NE of Honcut, about 12 air mi SE of Oroville 62 Comment
  CHSC46732  Montia fontana subsp. amporitana Lowell Ahart 1978-3-15 1614 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC62367  Montia fontana subsp. amporitana B. Castro 1990-3-31 417 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House, in SW-facing lava-lined minor streambed with flat to gentle slope at head of Nugen Cyn. 280 Comment
  CHSC97378  Montia fontana subsp. chondrosperma Paul Maslin 2006-3-17 38 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 1061036E 4412565N. Comment
  CAS-BOT-BC445035  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC445037  Montia linearis Lowell Ahart 1983-6-30 4183 Butte On the east side of the West Branch of the Feather River, about 5 miles east of Stirling City 1150 Comment
  CHSC12406  Montia parvifolia Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment
  UCD101762  Montia parvifolia Brian Bagley 1981-5-17 26 Butte 2.5 miles south of Arch Tunnel on Hwy 70. Cresta Powerhouse Substation. 463 Comment
  CHSC38557  Morus alba Vernon Oswald 1983-5-4 430 Butte Upper Bidwell Park, Chico, beside the trail on the N side of Chico creek 500 ft W of the power lines. 91 Comment
  RSA725281  Muhlenbergia andina L. Ahart 2006-8-15 13174 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC11976  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville. 1550 Comment
  CHSC51291  Muhlenbergia mexicana Lowell Ahart 1990-10-21 6635 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  UC1563261  Muhlenbergia mexicana unknown 1990-10-21 6635 Butte about 1/2 mi w Gold Flat (about 1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  SEINET7294640 Image available Muhlenbergia mexicana var. filiformis John Thomas Howell 1961-1 36716 Butte Bank of Feather River, Oroville 53 Comment
  CHSC55399  Myosurus minimus subsp. minimus L. P. Janeway 1991-5-1 3922 Butte Ca 1 mi south of Wyandotte and ca 1/4 mi west of Dunstone Drive. 182 Comment
  CHSC43681  Myriophyllum aquaticum Vernon Oswald 1984-3-14 1094 Butte Oroville Wildlife Area, near the w drive ca. 2 mi s of the 10th Street entrance off of Calif. Hwy 162. Comment
  UC1609490  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  UCD150342  Myriophyllum sibiricum William Anderson 1964-8-22 s.n. Butte Biggs. Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC3434  Nandina domestica Judy Potter 1966-2-16 Butte 621 Brice, Chico. In yard. Comment
  CHSC82616  Narthecium californicum L. P. Janeway; B. Castro 2002-7-7 7606 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC101668  Nassella pulchra Lowell Ahart 2009-4-26 15617 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico. 286 Comment
  SEINET10907333  Nasturtium officinale Mary Susan Taylor 1974-4-28 Taylor 211 A Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  UC1124097  Navarretia divaricata P. L. Johannsen 1936-7-17 937 Butte 2.5 mi sse Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  CHSC88075  Navarretia filicaulis R. D. Fischer 2004-6-6 160 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail between the junctions of Pine Trail and 10 Mile House Road. 403 Comment
  RSA716049  Navarretia filicaulis L. Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 823 Comment
  UC1719865  Navarretia heterandra David Fruchter 1979-9-18 177 Butte Oroville Airport Comment
  JEPS115709  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15766 Butte Along 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
  CHSC37131  Navarretia intertexta subsp. propinqua M. S. Taylor 1978-9-9 1917 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC25158  Navarretia leptalea D. Joley 1968-7-8 Butte 3/4 mi e of Lomo on Butte Meadows Road ca. 35 mi ne of Chico. Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  CHSC81286  Navarretia leucocephala J. Trizzino 2001-4-25 59 Butte Oro-Chico Highway, 0.25 mi west of Neal Road. Wet ditch on north side of road. 54 Comment
  UCD48500  Navarretia leucocephala E. M. Johnston 1915-1 W- 137 J Butte Biggs. Comment
  JEPS107885  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-27 11814 Butte Deep depression near a large wash, pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/5 miles east of Honcut, about 12 miles (air) southeast of Oroville 36 Comment
  JEPS117326  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CAS-BOT-BC230386  Navarretia leucocephala subsp. minima Lewis S. Rose 1939-6-5 39196 Butte Honcut 30 Comment
  CAS-BOT-BC233625  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  UC1124127  Navarretia pubescens C. G. Albertus 1933-6-6 26 Butte 1.5 mi w Pentz; Chico Quad. 137 Comment
  UC196276  Navarretia pubescens A. A. Heller 1914-5-4 11357 Butte 8 mi n Oroville Comment
  CDA40109  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte South edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. Comment
  JEPS117327  Navarretia viscidula Lowell Ahart 2010-6-1 16756 Butte On both sides of the Guardians Trail or South Rim Trail, under the power lines, Upper Bidwell Park, about 2 mile (air) east of Chico 144 Comment
  CHSC40403  Nemacladus capillaris Lowell Ahart 1985-6-17 5059 Butte Near a small seep, 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  CHSC46820  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  CHSC118892  Nemacladus capillaris R. A. Schlising 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  RSA0000011  Nemophila fallax C. C. Bruce 1897-03 2037 Butte [No location information on label.] Comment
  CHSC52344  Nemophila heterophylla J. D. Jokerst 1985-4-23 2263 Butte Top of North Table Mountain. N of Cherokee Rd., E edge of Beatson Hollow at the second drainage N of road. 365 Comment
  UCD119996  Nemophila heterophylla K. Esau; M. Phillips 1929-4-13 1918 Butte Chico. Comment
  UCSB63718  Nemophila heterophylla Blankenheim, Wendy 1991-4-16 Butte 150 yds. S of Butte Creek; .5 mi. W of Covered Bridge; 6.4 miles ESE of Chico; T. 22N., R. 2E.; sec. 25-midpoint near S boundary; Hamlin Canyon Quad.; 7.5 minute series 121 Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  CHSC39933  Nemophila pedunculata M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5400 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  SD4034  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  CHSC6627  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  CDA953  Nerium oleander D. G. Kelch 2006-8-2 6 .352 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  UC1609479  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte about 5 air mi ne Feather River Falls (at Camp 18) 1219 Comment
  SBBG25316  Notholithocarpus densiflorus var. densiflorus F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  UCD110233  Notholithocarpus densiflorus var. echinoides Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  POM110257  Odontostomum hartwegii C. C. Bruce 1897-04 1837 Butte Butte Creek Comment
  SEINET10472783  Odontostomum hartwegii Mary Susan Taylor 1980-4-27 Taylor 2568 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC77488  Olea europaea Tim Stofer 1997-4-22 21 Butte The plant was located on the east side of the trail at the shooting range, 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  RSA767794  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian s Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 0.5 miles east of Chico Canyon Road. 126 Comment
  CHSC54160  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte Joie Osgood Ranch, about 2 1/2 miles north and 3 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 91 Comment
  RSA0123821  Opuntia polyacantha var. polyacantha Lyman Benson, Robert L. Benson 1961-8-31 16137 Butte 13 miles west of Arco. Snake River drainage area. 1524 Comment
  CHSC87568  Orobanche fasciculata R. D. Fischer 2004-4-20 141 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along southern end of Humboldt Trail, at edge of trail. 396 Comment
  UC600432  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, W of Willow Creek. Comment
  RSA0087776  Orobanche fasciculata Herbert F. Copeland 1931-6-10 1557 Butte Jonesville. Ridge between Willow and Colby Creeks. 1676 Comment
  CAS-BOT-BC457671  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET12326988  Orthocarpus attenuatus Unknown 1984-1 15 Butte Upper Bidwell Park, ca 20 m N of Big Chico Creek, 6.7 km NE of jct of Hwys 32 & 99 120 Comment
  RSA636049  Orthocarpus erianthus Michael A. Vincent, Ethan H. Freid 1998-4-6 8125 Butte Table Mountain. Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. 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
  SEINET12326964  Orthocarpus purpurascens P. L. Venable 1978-1 18 Butte 6 mi N of Oroville, 0.5 W of Cherokee Rd 305 Comment
  SEINET10454521  Osmorhiza chilensis Mary Susan Taylor 1981-5-14 Taylor 3712 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  UC1594566  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  UCR182945A  Ottelia alismoides G. D. Barbe, T. C. Fuller 1977-9-20 2334 Butte Sacramento Valley, west of Biggs Rice Experimental Station, east of Cherokee Canal, approximately 0.5 km south of Hwy 162 29 Comment
  CHSC108973  Oxalis corniculata Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17812 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC27249  Oxalis rubra P. Moyer 1972-3-18 151 Butte CSUC campus. 2nd and Hazel, lawn. Comment
  CHSC40303  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5088 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CAS-BOT-BC316899  Packera eurycephala var. lewisrosei Clarence Roy Quick 1964-7-9 64 -50 Butte Steep rocky slope north of Jarbo Gap Comment
  UC1564780  Packera subnuda V. Oswald and L. Ahart 1989-6-27 3834 Butte 3.3 air mi se Jonesville (Humbug Rd at Butte Creek House); Butte Creek 1767 Comment
  CHSC46450  Packera subnuda var. subnuda V. Oswald; L. Ahart 1989-6-27 3834 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In meadow along Butte Creek. 1767 Comment
  JEPS119958  Panicum acuminatum var. fasciculatum Lowell Ahart 2012-6-21 18206 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC253700  Panicum capillare Lowell Ahart 1983-7-29 4239 Butte Ca. 0.5 mile E of Milsap Bar, ca. 25 miles NE of Oroville 500 Comment
  CHSC41981  Panicum dichotomiflorum Lowell Ahart 1986-11-14 5462 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
  UC177007  Parvisedum pumilum Mrs. R. M. Austin Butte Butte County Comment
  SEINET12215666  Parvisedum pumilum T. E. Lewis 1978-1 13 Butte Small population, 0.3 km SE of Five Mile Recreation Area and the Diversion Dam on Chico Creek, S 90 Comment
  SEINET12216582  Parvisedum pumilum E. J. Baker 1984-1 11 Butte N. side of Humboldt Rd., ca 10 yds n of rd. 2 mi e. of intersection with Stinson Canyon Rd. and 58 Comment
  CHSC21002  Paspalum dilatatum M. S. Taylor 1975-10-4 952 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  SEINET10507543  Paspalum dilatatum Mary Susan Taylor 1979-9-28 Taylor 2199 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC39613  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown. 450 Comment
  UC1609216  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte 3.5 air mi s Thermalito (s of the Feather Rv, Oroville Wildlife Area); Oroville Wildlife Area 36 Comment
  SEINET12331911  Pectocarya pusilla Unknown 1985-1 4960 Butte 0.5 mi E of Potter Ravine, S of E branch of Potter Ravine, about 2.5 mi NE of Oroville Dam 350 Comment
  UCR133597  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  SEINET10549178  Pedicularis densiflora Mary Susan Taylor 1981-3-16 Taylor 3402 Butte T21N R6E sw sec 18. Brush Creek quad. S side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CAS-BOT-BC69331  Pellaea brachyptera Lowell Ahart 1985-6-17 5053 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 701 Comment
  CHSC11794  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  CHSC23651  Pellaea mucronata M. S. Taylor 1976-4-24 1068 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC97017  Pellaea mucronata var. mucronata L. P. Janeway 2007-6-19 9064 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  SBBG28911  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 mi from Oroville on the Feather River Hwy Comment
  RSA699542  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 air miles N of Paradise, and W of upper Paradise Pines. Turn W off Skyway Road on Nimshew Road and take the S turn on Centerville Road (on older maps Humbug Road), ca 1 mile S of this junction. 644 Comment
  RSA4117  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  RSA3797  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  CHSC62789  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-3 4369 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  UC423640  Penstemon laetus var. leptosepalus David D. Keck 1930-7-24 972 Butte near Chaparral; Sierra Nevada 1645 Comment
  CHSC92744  Penstemon neotericus L. P. Janeway; Barbara Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek 0.6 km east-northeast of its confluence with Camp Creek. 1085 Comment
  SD4593  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville, dry hilltop 1650 Comment
  CHSC11884  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte Jonesville. 579 Comment
  CHSC69055  Penstemon newberryi var. newberryi Lowell Ahart 1997-8-1 7792 Butte On a mountain side, east of Little Kimshew Creek, east of Snow Meadow, about 1/4 mile east of Table Mountain , about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC1527283  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte about 1/2 mi sw Bald Mountain (about 4 1/2 mi ne of Stirling City); sw of Bald Mountain, ne of Stirling City 1615 Comment
  RSA0059021  Pentagramma pallida C. C. Bruce 1897-06 1870 Butte From Canon. Comment
  CHSC44617  Pentagramma triangularis subsp. semipallida Vernon Oswald 1984-4-9 1139 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  JEPS108137  Pentagramma triangularis subsp. semipallida Lowell Ahart 2005-11-12 12482 Butte Steep road cut on the east side of Dark Canyon Road, south of the large parking area, south of the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  UC1609371  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1993-6-20 7000 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC94385  Perideridia kelloggii Lowell Ahart 2006-8-5 13087 Butte On the west side of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 100 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET12121857  Perideridia lemmonii Unknown 1985-1 5083 Butte about 2.5 mi NE of Forbestown, near Forbestown Ditch 869 Comment
  CHSC25435  Perideridia parishii subsp. latifolia Hayes; Warner 1977-9-11 73 Butte Ca. 10 m n of Humboldt Rd., Ca. 6.9 mi from the junction of Humboldt Rd. with Hwy 32. 1219 Comment
  CAS-BOT-BC77561  Peritoma arborea var. globosa M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4377 Butte Headquarters of Graylodge Wildlife Refuge, ca. 12 mi SW of Gridley 19 Comment
  CHSC23425  Persicaria lapathifolia K. R. Stern 1972-9-19 3781 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC31771  Persicaria lapathifolia L. Ahart 1974-9-25 634 Butte Peter Ahart Ranch, Honcut. Garden weed. 45 Comment
  CHSC1348  Persicaria maculosa D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CAS-BOT-BC419172  Persicaria maculosa Lowell Ahart 1982-10-15 3891 Butte On the bottom of North Honcut Creek, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CAS-BOT-BC419180  Persicaria maculosa Herbert L. Mason; Verne Grant 1946-9-4 13111 Butte 833 Canal, West Gridley Road Comment
  UCD99576  Persicaria maculosa J. W. Jones 1929-9-26 s.n. Butte Biggs Rice Station. Comment
  CDA42927  Persicaria punctata L. Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS120020  Persicaria punctata Lowell Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC92540  Petrorhagia dubia L. P. Janeway; M. Brown, S. Mackey Hillaire, C. Christofferson 2005-5-2 8372 Butte Northern High Sierra Nevada. Plumas National Forest; south side near top of ridge trending southeast from Flea Mountain; 2.1 km southeast of top of Flea Mountain and +-overlooking Pulga. Along un-used dirt road under high power lines. 1067 Comment
  HSC23287  Petrorhagia dubia T. C. DeWitt 1971-4-4 26 Butte 5.6 mi. NW of Oroville on Table Mtn. W side of rd. 213 Comment
  UC726915  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte on Feather River Hwy 23 mi Oroville Comment
  CHSC42159  Phacelia distans Kent Clement 1986-4-7 20 Butte On North Table Mountain, ca. 10 km m of Oroville, w of Cherokee Rd. 411 Comment
  CHSC84912  Phacelia egena Janice Morris 1995-4-24 93 Butte Ca. 1/4 mi. n of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  SFV11587  Phacelia egena M. L. Vincent 1960-4-12 s. n. Butte Pentz Road on the way to Oroville from Paradise. 1 mile south of Paradise. Comment
  UC726923  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte along Feather River Hwy 25 mi from Oroville Comment
  CHSC54302  Phacelia purpusii Vernon H. Oswald; Lowell Ahart 1991-6-5 4649 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
  CAS-BOT-BC154304  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  POM73731  Phacelia ramosissima var. ramosissima C. C. Bruce 1897-06 1981 Butte Big Chico Comment
  CHSC8262  Phalaris caroliniana K. Henegar 1969-5-9 37 Butte 4 m N of Highway 162 on road Z. Rice lands. Comment
  CAS-BOT-BC259044  Phalaris lemmonii Lowell Ahart 1980-5-10 2237 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC250706  Phalaris paradoxa Lowell Ahart 1981-5-24 2833 Butte Peter Ahart Ranch, ca. 2 mi. N and 2 mi. E of Honcut 50 Comment
  CHSC10829  Phalaris paradoxa Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC49565  Phalaris paradoxa Vernon Oswald 1988-4-18 3272 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. On the edge of a rice field in the southeast part of the ranch. 45 Comment
  JEPS107748  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  CHSC30929  Philadelphus lewisii M. S. Taylor 1979-5-4 1990 A Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek, Rd, ca. 26 mi ne of Oroville. 1005 Comment
  SEINET10970382  Philadelphus lewisii subsp. californicus Mary Susan Taylor 1975-9-19 Taylor 912 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC250864  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  UC478474  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte w of the Summit; Jonesville 2100 Comment
  CHSC1305  Phlox speciosa subsp. occidentalis T. Morgue 1932-4-18 Butte Concow Reservoir. 579 Comment
  SEINET10492814  Phoradendron juniperinum var. libocedri Mary Susan Taylor 1976-2-22 Taylor 997 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  JEPS98508  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  HSC100733  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 210 Comment
  CAS-BOT-BC141118  Phoradendron serotinum subsp. macrophyllum G. P. Rixford 1914-10-1 s.n. Butte Bidwell Park, Chico Comment
  CHSC113291  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2014-5-5 19321 Butte About 40 feet north of the northeast corner of Washington Street and Spruce Street, in Gridley. 23 Comment
  JEPS127077  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yards north of the intersection of Smullin Road and Ahart Road east side of Honcut, about 13 miles south of Oroville. Comment
  CHSC30387  Phoradendron villosum J. D. Jokerst 1979-2-23 1133 Butte Top of North Table Mt., N of Cherokee Rd. On lone Quercus douglasii in open grasslands. 381 Comment
  JEPS117305  Photinia serrulata 2010-5-28 16745 Butte On the north side of the path, about 100 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico 67 Comment
  CHSC36095  Phyllodoce breweri R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4328 Butte NE part of county, N of Philbrook Reservoir; SE of Snow Mt. Peak, on flanks of mountain. 2057 Comment
  CHSC64136  Physalis acutifolia B. Castro 1987-10-6 235 Butte At CSUC University Farm, along dirt road between berry vines and almond orchard. 45 Comment
  CHSC117423  Physalis lancifolia Lowell Ahart 2016-5-30 20891 Butte North of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CDA5814  Physalis philadelphica L. L. Heinrichs 1968-10-1 Butte Forebay Recreational Area, Highway 70 at Garden Drive, Oroville. 0 Comment
  RSA325148  Physocarpus capitatus M. S. Taylor, L. Hanson 1981-5-17 3805 Butte Along creek, Phillips property, 685 Wagstaff, Paradise. 579 Comment
  CDA3321  Phytolacca americana L. Ahart 2004-9-28 11405 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. Comment
  CDA34619  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  CHSC61203  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  UC1609390  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte ca. 12 mi se Oroville (ca. 1 1/2 mi n and 3 mi e of Honcut, w side of Dunstone Rd.) 60 Comment
  SEINET10530358  Pilularia americana Mary Susan Taylor 1979-5-6 Taylor 2002 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CAS-BOT-BC73149  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  POM127000  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows. 1280 Comment
  CHSC27191  Pinus sylvestris P. Moyer 1971-10-8 41 b Butte Front lawn Admin. Bldg. On CSUC campus. 60 Comment
  SEINET10872492  Piperia elegans Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4051 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
  CHSC2445  Piperia transversa R. Carter 1965-7-6 275 Butte Found along E side of Oroville-Quincy R., 5.2 mi. N of Mountain House, ca. 5' from road. 1219 Comment
  CHSC49680  Piperia transversa Vernon Oswald 1983-7-26 914 Butte Calif. Hwy 32, 6.2 mi n-e of Forest Ranch. 1036 Comment
  CHSC78349  Piperia transversa Lowell Ahart 2000-7-11 8570 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC51945  Piperia unalascensis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3080 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  CHSC98915  Piptatherum miliaceum L. P. Janeway 2007-12-11 9221 Butte Northern Sierra Nevada Foothills. Flats on top of bluffs along east side of Feather River between Fish Barrier Dam and Thermalito Diversion Dam. 58 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
  CDA35054  Pistacia vera L. P. Janeway 2009-10-13 9950 Butte Cascade Range Foothills; Upper Bidwell Park, Chico; south side of Big Chico Creek, along South Rim Trail/Annie Bidwell Trail 155 m east-northeast of its start at the east end of Centennial Ave. and Chico Canyon Road. Comment
  CHSC20530  Pittosporum tobira Pamela Caldwell 1972-5-7 Butte Behind President's Mansion across roadway from CSUC. Comment
  SEINET10529960  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-10-6 Taylor 3352 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  UC196292  Plagiobothrys bracteatus A. A. Heller 1914-4-17 11308 Butte in vernal pool in field 8 mi n Oroville Comment
  HSC85966  Plagiobothrys fulvus J. Hunter 1986-3-5 21 Butte Ca. 1 km E Chico, 50 m S Hwy. 32 75 Comment
  POM252790  Plagiobothrys fulvus var. fulvus A. A. Heller 1938-4-23 15044 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  CHSC32127  Plagiobothrys glyptocarpus L. Ahart 1978-4-27 1667 Butte Along edges of small wash. Peter Ahart Ranch, Honcut. 50 Comment
  SD122572  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1984-5-7 4590 Butte 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise. 600 Comment
  CHSC39624  Plagiobothrys greenei Lowell Ahart 1983-5-12 3970 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  POM252952  Plagiobothrys greenei A. H. Heller 1938-4-14 15024 Butte Along road near Wick s Corner north of Oroville. Comment
  RSA178642  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte East of Chico near the Hooker Oak, Comment
  CHSC61634  Plagiobothrys hispidulus Lowell Ahart 1993-9-13 7238 Butte On the bottom of a small wash on the north side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 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
  UC480661  Plagiobothrys hispidulus H. F. Copeland 1930-6-10 Butte Jonesville 1524 Comment
  CHSC101674  Plagiobothrys nothofulvus Lowell Ahart 2009-4-26 15645 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC40764  Plagiobothrys nothofulvus Ahart; Jokerst 1985-5-10 4955 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  JEPS127064  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  CHSC109114  Plagiobothrys scriptus Lowell Ahart 2012-3-23 17798 Butte Botttom of a small path, 90 feet north of a large Gray Pine, north end of the Disc Golf Area, about 50 yads west of Highway 32, about 5 miles (air0 northeast of Chico. 395 Comment
  CHSC46770  Plagiobothrys shastensis Lowell Ahart 1980-4-30 2126 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road. 295 Comment
  UC78203  Plagiobothrys stipitatus Mrs. E. Miles 1887-1 Butte Comment
  CHSC65896  Plagiobothrys stipitatus var. micranthus Vernon H. Oswald 1996-4-20 7407 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In formerly irrigated pasture in the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC78130  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-18 8373 Butte On the bottom of the Clay Pit, east of the Cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  SD116549  Plagiobothrys stipitatus var. micranthus B. Ertter, Jeff Strachan 1980-5-5 3264 Butte Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville, pasture of annual grasses and herbs north of house. 29 Comment
  UCD80162  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-12 SNFN 0077 c Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  UCD124395  Plantago coronopus Steven C. Joslin 1978-4-18 2 Butte ca. 11 miles north of Chico on Highway 99 at intersection with Broyles Road. 60 Comment
  CHSC10737  Plantago erecta Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC3639  Plantago erecta Alice L. Stoll 1966-3-28 34 Butte 7.9 miles N. E. of First and Main Streets, Chico above Salmon Hole, Upper Bidwell Park. Comment
  CHSC41133  Plantago erecta B. Anthony 1967-4-9 43 Butte Bare Hole, along Yahi Trail, Bidwell Park, Chico. 1828 Comment
  JEPS115594  Plantago erecta Lowell Ahart 2009-4-22 15584 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS119595  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. Comment
  CHSC31779  Plantago lanceolata L. Ahart 1973-6-28 256 Butte Peter Ahart Ranch, Honcut. On dry sand near a creek. 45 Comment
  CHSC39524  Plantago lanceolata Lowell Ahart 1983-6-21 4064 Butte Fround growing along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, northeast of Oroville. Section 5. 400 Comment
  SEINET10499814  Plantago lanceolata Mary Susan Taylor 1975-3-3 Taylor 395 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  CHSC32583  Plantago major var. scopulorum L. Ahart 1976-9-21 1199 Butte Along the edge of the rd 1/8 mi e of Golden Trout Crossing, ca 3 mi w of the Sly Creek Reservoir, the crossing is a bridge across from the South Fork of the Feather River. 762 Comment
  CHSC26859  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1664 Butte On n side of Old Humbug Rd, across from Butte Meadows. 1371 Comment
  CHSC93988  Platanthera leucostachys R. D. Fischer 2004-6-20 784 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Above pond area and around upper stream edges. 1371 Comment
  CHSC101299  Plectritis ciliosa subsp. insignis Lowell Ahart 2009-4-22 15604 -A Butte South side of Guardians Trail, south 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
  CAS-BOT-BC458150  Pleuricospora fimbriolata E. B. Copeland 1920-4-2 209 Butte Jonesville 1219 Comment
  CHSC56638  Poa annua J. Boze 1982-5-6 423 Butte In backyard garden area. End of Michal Way, ca 1.5 mi east of Hwy 99 off of Eaton Road. Comment
  SEINET3450767  Poa annua Unknown 2003-3-31 10031 Butte Oroville, Oroville, about 10 miles southwest, about 3/8 miles east of Riceton highway, about 20 yards north of Hamilton Road, about 50 yards east of the drain ditch, landplained rice field 20 Comment
  UC204921  Poa annua A. A. Heller 1914-3-28 11243 Butte Chico; Sacramento Valley Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  CHSC39393  Poa compressa L. Ahart 1983-9-17 4438 Butte Ca. 1/4 mi se of Stirling City. Bottom of a wash. 1100 Comment
  CHSC61375  Poa compressa Lowell Ahart 1993-7-23 7094 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
  CHSC76332  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. Near creek. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 750 Comment
  JEPS120926  Poa compressa Lowell Ahart 2013-7-6 18827 Butte South bank of North Honcut Creek, E of the steel power line, about 2 air miles NE of Honcut, about 13 air miles SE of Oroville. Comment
  CHSC54311  Poa howellii Vernon H. Oswald; Lowell Ahart 1991-6-5 4643 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. Roadside banks. 670 Comment
  CHSC61197  Poa howellii Vernon H. Oswald 1993-5-18 5401 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, between the footbridge over the creek and the side trail to 'Lil' Falls, ca. 2 mi (air) WNW of Magalia. Along the trail near the bottom of the canyon. 609 Comment
  CHSC113420  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. 1561 Comment
  CHSC64262  Poa pratensis S. C. Morey 1983-8-1 652 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS119850  Poa pratensis subsp. pratensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18240 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Patk, Chico. Comment
  CHSC8252  Poa secunda subsp. secunda M. Banning 1969-4-18 81 Butte Table Mt., 1/2 mi. S. of Oregon City junction along road. 487 Comment
  JEPS117708  Poa tenerrima Lowell 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 miles (air) northeast of Chico 350 Comment
  UCD92073  Poa tenerrima William Anderson 1965-4-24 s.n. Butte Table Mountain. Comment
  UC140043  Pogogyne zizyphoroides Mrs. R. M. Austin Apr 1896 772 Butte Chico Comment
  RSA0022179  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  UCD125428  Pogogyne zizyphoroides W. R. Powell 1968-4-23 1468 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC33649  Polanisia dodecandra subsp. trachysperma M. Merryman; R. Banchero 1979-9-23 43 Butte SW of Chico, just e of Ord Ferry and Sacramento River. 30 Comment
  CHSC83118  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 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
  CHSC27706  Polemonium pulcherrimum Robert A. Schlising; Marc P. Hayes 1978-6-24 3290 Butte Probably just within Butte County line on summit of Humboldt Peak. 2133 Comment
  SEINET10936260  Polygala cornuta Mary Susan Taylor 1981-6-7 Taylor 3859 Butte T22N R5E sw/sw sec 14, Pulga quad. Dry sites along old mining road on N side of Bear Ranch Creek, across from Feather River Hwy 70 from Arch Rock Tunnel Area, ca. 20 air mi NE of Oroville; on granite; 1700 ft elev. 518 Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CAS-BOT-BC167557  Polygala cornuta var. cornuta C. R. Quick 1941-6-8 41 -15 Butte Big Bar Mt. Meadow Comment
  CAS-BOT-BC167558  Polygala cornuta var. cornuta H. F. Copeland 1920-8-26 179 Butte Near Jonesville 1219 Comment
  CAS-BOT-BC6544  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  JEPS87156  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  CHSC38613  Polygonum aviculare Vernon Oswald 1983-6-27 772 Butte Upper Bidwell Park, Chico, at the Horse Arena. Growing in disturbed soil in the parking lot. 79 Comment
  CHSC46204  Polygonum aviculare L. P. Janeway 1986-10-19 1940 Butte Wet area along small creek feeding Thermalito Forebay from the NE. Between bay and hwy 99 and just N of the State Park picnic grounds. 67 Comment
  UC178789  Polygonum bistortoides Mrs. R. M. Austin July 1896 284 Butte Colby Comment
  UC186377  Polygonum californicum Dr. C. C. Parry Oct. 1881 Butte Chico Comment
  CHSC44926  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-7-31 6158 Butte Near the road, on the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air mile north-east of Stirling City. 1066 Comment
  CHSC58944  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CHSC105178  Polygonum douglasii subsp. spergulariiforme B. Castro; L. P. Janeway 1999-8-1 1020 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  SEINET10937606  Polygonum hydropiperoides var. asperifolium Mary Susan Taylor 1978-9-8 Taylor 1883 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET10479654  Polygonum lapathifolium Lowell Ahart 1990-10-3 Ahart 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 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
  SEINET10479663  Polygonum parryi Lowell Ahart 1985-6-17 Ahart 5060 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  UC203615  Polygonum persicaria A. A. Heller 1914-8-20 11690 Butte about 5 mi s Pentz; Dry Creek Comment
  UC122768  Polypodium Mrs. R. M. Austin Mar, 1896 237 Butte Little Chico Canyon Comment
  CAS-BOT-BC71873  Polypodium californicum Geo. B. Grant 1902-6-1 1026 Butte Siera Madre Mts. Comment
  UCSB63725  Polypodium californicum Occhino, Deborah 1990-4-22 Butte S bank Big Chico Creek, vic. police pistol range, SW corner Bidwell Park, Chico 60 Comment
  CHSC60943  Polypodium calirhiza Lowell Ahart 1993-7-6 7061 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC96823  Polypodium calirhiza Lowell Ahart 2007-5-29 13935 Butte On the east side of Bald Rock Dome, Dome Trail at the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  RSA795637  Polypodium calirhiza L. Ahart 2012-2-22 17740 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
  CAS-BOT-BC233054  Polypogon interruptus Lowell Ahart 1982-5-28 3442 Butte E of Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  CHSC47630  Polypogon interruptus Lowell Ahart 1977-5-8 1364 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC90814  Polypogon interruptus Lowell Ahart 2005-5-2 11779 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
  UC1609522  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  SEINET10658297  Polypogon maritimus Henegar 1969-5-9 HENEGAR 54 Butte 4 m n of Highway 162 on road Z, found along road side. Comment
  CHSC2178  Polypogon monspeliensis H. Silberman; D. Isaac 1949-5-17 Butte Drainage of Golf course reservoir, Chico. 91 Comment
  CHSC46106  Polypogon monspeliensis L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1536 Butte Just north of Rutherford Rd. ca 100 met. west of its junction with Pennington Rd. Grey Lodge Waterfowl Management Area. Comment
  CHSC6126  Polypogon monspeliensis E. Parreno 1968-5-12 99 Butte Left side of Upper Bidwell Rd. before junction with Rd. to Diversion Dam. Chico. Comment
  JEPS118208  Polypogon viridis Dean W. Taylor 2004-6-17 19105 Butte Flea Valley (3 air miles NW of Pulga; watershed Flea Valley Creek, tributary North Fork Feather River) 1127 Comment
  CHSC4147  Polystichum imbricans R. Carter 1966-4-28 374 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. Up 23N28 on E side of road. 640 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
  JEPS108138  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  SBBG119825  Polystichum imbricans subsp. imbricans L. Ahart 2003-7-30 10459 Butte N side of Bald Rock, S side of Bean Crk Rd, ca. 2 air mi SE of Brush Crk 1000 Comment
  CAS-BOT-BC76710  Polystichum lemmonii V. Oswald; L. Ahart 1988-7-29 3655 Butte Ca. 5 mi. (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CAS-BOT-BC76652  Polystichum munitum Lowell Ahart 1980-9-10 2633 Butte Sierra Nevada - 1 mile north-east of Milsap Bar. 900 Comment
  SD149211  Polystichum scopulinum Lowell Ahart, Vernon Oswald 1987-7-5 3189 Butte Rock outcrops skirting the north flank of Humboldt Peak on the Butte-Plumas county border, south of the Pacific Crest trail. 2070 Comment
  SEINET10965500  Portulaca oleracea Mary Susan Taylor 1977-10-10 Taylor 1506 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  CHSC100541  Potamogeton gramineus W. H. Lang 1954-8-12 Butte Biggs Rice Experimental Station. Irrigation canal alongside of rice plot. Comment
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  POM218973  Potamogeton pusillus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CHSC65478  Potamogeton pusillus var. tenuissimus Vernon Oswald 1987-8-10 3209 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. In the west lake. 1935 Comment
  SD2231  Potentilla andersonii E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CHSC105538  Potentilla flabellifolia Lowell Ahart 2010-9-28 17252 Butte On wet humus, south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  UCD113841  Potentilla gracilis E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  CAS-BOT-BC539449  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  UC204597  Proboscidea louisianica subsp. louisianica W. C. Morgan 1918-9-2 Butte Chico Comment
  SEINET10498364  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1978-7-21 Taylor 1819 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
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  SFV5827  Prunella vulgaris var. lanceolata M. L. Vincent 1968-6-5 773 dup. Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC9388  Prunus M. MacArthur 1968-6-12 329 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  JEPS108578  Prunus avium L. P. Janeway, C. Christofferson, M. Brown, S. Mackey Hillaire 2005-4-19 8363 Butte Northern High Sierra Nevada. Plumas National Forest; in small upper drainage of Flea Valley Creek, about 560 m east-northeast of junction of Concow Road and Rim Road (Ponderosa Way) 841 Comment
  SEINET10483441  Prunus avium Mary Susan Taylor 1981-5-29 Taylor 3813 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi SW of Coyote Gap, ca. 16 air mi N of Oroville. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 Comment
  CHSC110120  Prunus cerasifera L. P. Janeway 2012-3-21 10801 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CDA38804  Prunus dulcis L. P. Janeway 2012-3-6 10792 Butte Sacramento Valley; Southern edge of Chico; fence-line along west side of Hwy 99 just south of Estates Drive. Comment
  CHSC30422  Pseudobahia heermannii J. D. Jokerst; L. Ahart, M. Taylor 1980-4-7 553 Butte NE corner of the jct of Swedes Flat Rd and Rocky Honcut Cr, (10 mi SE of Oroville). Comment
  CHSC35628  Pseudobahia heermannii R. E. Preston 1982-2-21 176 Butte N side of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 274 Comment
  CHSC113980  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CHSC116154  Pseudognaphalium beneolens Lowell Ahart 2015-11-7 20624 Butte On the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  CHSC21054  Pseudognaphalium luteoalbum M. S. Taylor 1975-4-25 503 Butte On Cohassett Hwy, ca. 1/2 mi n of Horse trough, ca. 20 mi ne of Chico. Comment
  CHSC44372  Pseudognaphalium stramineum Lowell Ahart 1988-6-23 6079 Butte Meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC45672  Pseudognaphalium stramineum Vernon Oswald 1988-5-2 3292 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 60 Comment
  UCD149980  Pseudognaphalium stramineum E. Littrell 1972-5-8 s.n. Butte Gray Lodge Wildlife Area. Comment
  CHSC45003  Pseudognaphalium thermale Lowell Ahart 1988-9-4 6176 Butte Along the edge of the dirt road, a little north of a branch of Last Chance Creek, about 1 mile west and a little north of Bald Mountain. 1005 Comment
  UC896905  Pseudognaphalium thermale A. A. Heller 1916-9-23 12659 Butte near Forest Ranch (Sierra foothills); Sierra Comment
  CHSC52014  Pseudostellaria jamesiana L. P. Janeway 1988-6-25 2864 Butte Near Coon Cr and Near Bull Hill Rd 1.0 mi from the Skyway. 1554 Comment
  CHSC30746  Pseudotsuga menziesii var. menziesii M. S. Taylor 1980-5-27 2656 Butte On trail from parking lot to Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC32154  Pseudotsuga menziesii var. menziesii L. Ahart 1975-4-1 736 Butte Along edge of rd; ca. 2 mi s of Ponderosa Dam. 396 Comment
  UCD77962  Psilocarphus chilensis Robert E. Preston 2005-3-24 2328 Butte Ca. 3.5 mi NW of Oroville, in field along E side of Table Mountain substation 53 Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CAS-BOT-BC361827  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CAS-BOT-BC361828  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SD5471  Psilocarphus tenellus E. B. Copeland 1931-7-20 Butte Jonesville 1700 Comment
  SEINET10904902  Psilocarphus tenellus Lowell Ahart 1983-8-16 Ahart 4304 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC28127  Pteridium aquilinum var. pubescens R. E. Barry 1972-5-6 58 Butte Located ca 50 yds s of the KHSL transmitter on the w side of Cohasset Road, ca 15 mi n of Chico Municipal Airport. 1066 Comment
  CAS-BOT-BC460485  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 Comment
  CHSC96227  Pterostegia drymarioides R. Fischer 2006-4-25 972 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  CAS-BOT-BC421112  Pterostegia drymarioides Lewis S. Rose 1945-5-12 45041 Butte Richard Springs 304 Comment
  CAS-BOT-BC147770  Purshia tridentata var. tridentata V. Oswald; L. Ahart 1988-7-29 3639 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  SEINET516142  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. 1326 Comment
  CHSC48676  Pyrola aphylla Vernon Oswald 1984-6-14 1289 Butte Cohasset Rd. on Cohasset Ridge, 1.3 mi n of the end of the pavement. 1036 Comment
  CHSC94168  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  CHSC43724  Pyrola picta Vernon Oswald; Lowell Ahart 1987-7-5 3187 Butte N flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  UC474253  Pyrola picta H. F. Copeland 1938-8-14 489 Butte Jonesville above Jones Creek Comment
  CAS-BOT-BC94690  Quercus X howellii John Thomas Howell 1955-6-15 30491 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UC1135528  Quercus berberidifolia C. G. Albertus 1933-6-6 16 Butte 1 mi nw Nelson's Bar; Chico Quad. 457 Comment
  SEINET13953128 Image available Quercus berberidifolia T. A. Ranker, P. G. Trapp 1994-1 1619 Butte Pence Road, south of Paradise, T21N, R4E, S6 ca 1,300 ft (395m). 396 Comment
  CHSC101332  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 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
  CHSC75373  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte Additional township information (T20N R04E S08 SW1/4, close to border with S07). Steep shaded south slope 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
  CAS-BOT-BC86119  Quercus dumosa P. C. Everett; E. K. Balls 1959-10-20 23907 Butte 8.6 miles NE from Chico along State Hwy. 32, toward De Sabla 487 Comment
  JEPS38009  Quercus dumosa A. E. Wieslander 1927-6-29 Butte near Fourteen-mile House (Humboldt road from Chico) Comment
  CHSC90047  Quercus kelloggii Rhonda Posey 1991-4-16 20 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  RSA477104  Quercus vacciniifolia Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CHSC108750  Quercus wislizeni B. Castro 2002-6-14 1376 Butte Northern Sierra Nevada Foothills. Near Spring on E side of Dark Canyon Road ~0.8 mi NE of boatramp into arm of Lake Oroville. By side of road under transmission lines. 359 Comment
  CHSC31829  Quercus wislizeni L. Ahart 1977-4-16 1305 Butte Along the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10477840  Quercus wislizeni Mary Susan Taylor 1976-3-30 Taylor 1037 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET12094427  Ranunculus alismifolius Unknown 1983-1 353 Butte E. of Philbrook Reservoir at county line, T25N, R5E, sec. 16, Jonesville 15' quad 1975 Comment
  CHSC97403  Ranunculus alismifolius var. alismellus Robert Fischer 2006-6-11 1009 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of the Humboldt Road junction. UTM: 10634233E, 4441779N. 1752 Comment
  CHSC113211  Ranunculus aquatilis var. aquatilis Lowell Ahart 2014-4-16 19370 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  CAS-BOT-BC378957  Ranunculus bonariensis Lowell Ahart 1980-4-19 2088 Butte Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC378958  Ranunculus bonariensis Lowell Ahart 1978-4-14 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC45400  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 1659 Butte In a vernal pool, Peter Ahart Ranch, about 1 mile north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC62832  Ranunculus canus Ella Icard 1893-4-1 Butte Comment
  CHSC46844  Ranunculus flammula var. ovalis Kirsten Tarp 1982-7-16 206 Butte N part of county at Crane Valley; streamside at margin of meadow. 1584 Comment
  CDA34237  Ranunculus hebecarpus L. Ahart 2009-4-22 15592 Butte Along the Guardian s Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC115355  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte Cliffs, on the road cut on the south side of Pacific Heights Road, about 3 1/2 miles (air) southwest of Oroville. 47 Comment
  JEPS124188  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte About 3 1/2 miles (air) southwest of Oroville. Comment
  CDA34169  Ranunculus muricatus L. Ahart 2009-4-3 15538 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  HSC31873  Ranunculus muricatus David Johnson 1974-4-20 44 Butte Table Mtn. Comment
  CDA14071  Ranunculus occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-1 13718 Butte Sierra Nevada; NE side of upper end of Paradise Lake above Magalia. Comment
  SD1769  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville, in meadows 1550 Comment
  CHSC53980  Ranunculus sceleratus var. sceleratus Vernon H. Oswald 1991-4-21 4508 Butte Shippee Rd, 0.3 mi east of Hwy 99, between Hwy 149 and the Thermalito Afterbay. In ditch on the north side of the road. 50 Comment
  JEPS117918  Ranunculus uncinatus var. parviflorus L. P. Janeway 2008-6-22 9433 Butte Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  CHSC111394  Raphanus raphanistrum Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18013 Butte On disturbed soil, 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
  CAS-BOT-BC74263  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  CHSC1529  Rhamnus ilicifolia M. Roberson 1956-4-16 Butte SW. Paradise, along Skyway. 426 Comment
  RSA2158  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville. 1677 Comment
  CHSC116497  Rhamnus tomentella subsp. tomentella Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20197 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  JEPS115608  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  UC1121755  Rhamnus tomentella subsp. tomentella C. G. Albertus 1933-5-26 1 Butte 0.75 mi nw Yankee Hills; Chico Quad. 518 Comment
  UC175334  Rhamnus tomentella subsp. tomentella A. A. Heller 1912-5-23 10753 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CHSC27199  Rhaphiolepis indica P. Moyer 1971-2-1 85 Butte CSUC Campus. S face of Bus.-Soc. Sci. Bldg. 60 Comment
  CHSC6650  Rhododendron M. MacArthur 1968-6-22 273 Butte Entrance of SM bld., Chico State College. 60 Comment
  CHSC13517  Rhododendron occidentale A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CHSC24683  Rhus aromatica D. Hattem 1976-4-10 5 Butte Ca. 50 m ne of Big Chico Creek, ca. 10 mi ne of Chico. 304 Comment
  CHSC37628  Rhus aromatica T. B. Devine 1979-8-12 593 Butte Forest Ranch Road, ca. 3 mi N of Forest Ranch, ca. 1/2 mi Nw of Hwy 32. Comment
  JEPS109898  Rhynchospora capitellata Dean W. Taylor 2006-8-17 19608 Butte Bald Mt.; West Branch Feather River watershed; Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank 1676 Comment
  CHSC35214  Ribes amarum M. S. Taylor; J. Jokerst 1980-4-18 2505 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC81517  Ribes nevadense D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  CHSC99635  Ribes nevadense H. Koeth 2007-5-5 Butte Butte Meadows, Cherry Hill campground. UTM 10 628108E 4440095N. 1326 Comment
  UC79695  Ribes nevadense T. S. Brandegee 1892-6-29 Butte Jonesville Comment
  SEINET13942772 Image available Ribes roezlii A. A. Heller 2015-1 11970 Butte Chico Meadows in the Sierra Nevada, elevation 4000 feet in dry places. 1219 Comment
  CHSC6050  Robinia pseudoacacia M. MacArthur 1968-6-18 226 Butte S edge of Big Chico Creek next to bridge by PSA bld., Chico State College campus. 60 Comment
  CHSC1216  Romneya coulteri E. Channon 1931-5-19 Butte Planted along Chico creek near Bidwell mansion. 57 Comment
  CAS-BOT-BC74471  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  RSA719205  Rorippa curvisiliqua L. Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 mile N and 0.5 mile E of Honcut, about 12 miles S of Oroville. 32 Comment
  JEPS110370  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field 31 Comment
  SEINET10448490  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 Ahart 5040 Butte Lake Oroville, about 1/2 mile south-west of the Enter- prise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. Comment
  JEPS124256  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-10-26 20591 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC46347  Rorippa nasturtium-aquaticum Lowell Ahart 1989-5-23 6239 Butte Along the bottom of a stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC103661  Rorippa palustris var. occidentalis Lowell Ahart 2010-4-7 16575 Butte On the sides of a deep ditch, south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Princeton Highway, about 1 1/4 mile northwest of Biggs. 31 Comment
  CHSC113373  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  SEINET3450729  Rosa bridgesii Unknown 2003-7-12 10373 Butte Oroville, Oroville, about 15 air miles northeast, Both sides of Bald Rock Road, about 3 miles south of the Brush Creek Work Center 1010 Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 mile (air) southwest of Forbestown. 829 Comment
  CHSC33638  Rosa californica M. Merryman; R. A. Schlising 1979-9-23 46 Butte SW of Chico along Ord Ferry Rd, ca. 3.7 mi w of Dayton Four Corners. Just w of the meridian. Field edge at roadside. 35 Comment
  CHSC66083  Rosa californica Vernon H. Oswald 1996-5-22 7628 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Between the farm road and the slough at the SE corner of the Riparian Sanctuary. 28 Comment
  CHSC82396  Rosa californica Lowell Ahart 2002-5-15 9661 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  POM90181  Rosa californica C. C. Bruce 1897-06 1807 Butte Little Chico. Comment
  CHSC27335  Rosa gymnocarpa T. B. Devine 1977-6-5 428 Butte Beside P.G. and E. Flume. Ca. 1 mi n of De Sabla off Humbug Rd. 853 Comment
  SEINET10483515  Rosa gymnocarpa Mary Susan Taylor 1979-10-5 Taylor 2225 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
  RSA0005392  Rosa pisocarpa subsp. ahartii Barbara Ertter 2007-6-23 19074 Butte Black Bart Road. 1.3 miles from lower junction with Forbestown Road ca. 10 air miles ESE of Oroville. 655 Comment
  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
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CAS-BOT-BC147095  Rubus John Thomas Howell 1959-9-20 34684 Butte Eastern outskirts of Oroville 60 Comment
  JEPS127015  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC30769  Rubus glaucifolius M. S. Taylor 1980-9-12 3329 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft w of the Hwy, n of a dirt rd. 975 Comment
  CHSC45814  Rubus laciniatus L. P. Janeway 1987-6-13 2186 Butte At the Crain Mill site, 1.6 mi N along Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  POM366455  Rubus laciniatus L. Ahart, P. Ahart 1984-6-10 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CAS-BOT-BC148369  Rubus leucodermis John Thomas Howell 1962-6-15 37454 Butte Magalia - Sierra Nevada 731 Comment
  UC426912  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  UCR66527  Rubus parviflorus H. F. Copeland 1930-8-26 1328 Butte Jonesville, in woods above hotel 1677 Comment
  CAS-BOT-BC147358  Rubus pensilvanicus John Thomas Howell 1962-6-15 37451 Butte Magalia 731 Comment
  CAS-BOT-BC433198  Rubus pensilvanicus Peter H. Raven 1953-5-9 5449 Butte 6.5 miles from Bangor on road to Oroville Comment
  UCD166759  Rubus praecox Marcel Rejmanek 2016-10-6 2162 a Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CHSC111370  Rubus ursinus Lowell Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  CHSC42426  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC112338  Rumex acetosella Lowell Ahart 2013-7-9 18835 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
  CHSC102831  Rumex conglomeratus Lowell Ahart 2009-6-18 15912 Butte On the west side and bottom of the steep bank, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  JEPS120853  Rumex conglomeratus Lowell Ahart 2013-6-18 18805 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  CAS-BOT-BC421734  Rumex conglomeratus Lowell Ahart 1989-5-31 6331 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CAS-BOT-BC433642  Rumex obtusifolius Lowell Ahart 1982-9-13 3807 Butte Edges of 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
  CAS-BOT-BC434070  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  UCD101476  Rumex triangulivalvis L. Ahart; Willow Dock 1984-6-8 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. 475 Comment
  CHSC27674  Sagina decumbens subsp. occidentalis Robert A. Schlising 1978-4-23 3228 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road. Comment
  CHSC29719  Sagina decumbens subsp. occidentalis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 428 Butte Top of North Table Mt, ca 1.0 mi n of jct of E edge of Mt and Cherokee Rd. Around vernal pools. 381 Comment
  CHSC31546  Sagina decumbens subsp. occidentalis L. Ahart 1978-3-19 1615 Butte In pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113510  Sagina saginoides Lowell Ahart 2014-7-16 19680 Butte Northeast area of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  POM183146  Sagittaria cuneata H. F. Copeland 1930-7-29 1309 Butte Neighborhood of Jonesville. 1829 Comment
  UC463018  Salix eastwoodiae E. B. Copeland 1931-7-30 Butte Willow Creek Jonesville 1600 Comment
  CHSC108871  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southwest of the intersection of south rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  JEPS119578  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  LA208653  Salix gooddingii A. A. Heller; 1914-4-6 11262 Butte Chico-Oroville rd 12 mi from Chico on the banks of Dry Creek Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  JEPS107338  Salix lasiandra var. lasiandra Lowell Ahart 2005-4-2 11695 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC108840  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte Wet are in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC99650  Salix lasiolepis H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte), in natural spring. UTM 10 633982E 4365709N. 217 Comment
  NY187652  Salix lasiolepis L. Ahart 1987-4-30 5492 Butte Along North Honcut Creek, about 2.5 miles N and 3 miles E of Honcut, about 12 miles SE of Oroville 67.1 Comment
  SEINET10538856  Salix lasiolepis Mary Susan Taylor 1979-3-19 Taylor 1934 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CAS-BOT-BC124573  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750 Comment
  CHSC65017  Salix lemmonii Vernon H. Oswald 1987-8-10 3204 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  CHSC42543  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5683 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  UC446425  Salix melanopsis E. B. Copeland 1931-6-30 Butte Jonesville beside Butte Creek 1500 Comment
  UC75007  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte banks of Butte Creek Chico Comment
  JEPS115606  Sanguisorba minor subsp. muricata Lowell Ahart 2009-5-23 15732 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  HSC66267  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte W end of county dump on N side of Neal Rd., about 1 mi. E of Hwy. 99, about 7 mi. S of Chico 76 Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  SBBG17072  Sanicula bipinnatifida M. Vincent 1961-3-26 17 Butte Nelson Bar Rd near Feather River bridge 457 Comment
  CHSC99550  Sanicula bipinnatifida var. flava L. P. Janeway 2008-5-26 9371 Butte Northern High Sierra Nevada. Steep northeast-facing slope high above West Branch Feather River about 1.9 air km northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.9 road km northeast of the bridge over West Branch Feather River. 666 Comment
  JEPS115607  Sanicula bipinnatifida var. flava Lowell Ahart 2009-5-23 15751 Butte About 10 miles northeast of Chico, about 1/2 mile (air) southwest of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 311 Comment
  UC1006698  Sanicula crassicaulis C. Ritchie Bell 1952-4-19 3 X419 Butte 3.8 mi ne of Berry Creek (in (an old home site)) Comment
  CHSC70778  Sanicula graveolens B. Castro 1995-5-18 569 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, on S side of USFS Rd 21N25. On dirt berm 15-20 ft S of road edge. 1094 Comment
  JEPS97504  Sanicula graveolens James D. Jokerst 1985-5-20 2355 Butte E of West Branch Feather River, 1 mi due E of the Skyway at Inskip Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 Comment
  POM82771  Sanicula graveolens C. C. Bruce 1898-06 S.N. Butte [No locality information provided] Comment
  CHSC28650  Sanicula tuberosa M. S. Taylor 1979-3-20 1928 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of bridge over north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC29097  Sanicula tuberosa M. S. Taylor; J. D. Jokerst 1980-4-18 2521 Butte On e side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  UCD114699  Sanicula tuberosa Christopher Mallek 2008-1 HW1- 17 Butte Magalia. 756 Comment
  CHSC48680  Sarcodes sanguinea Vernon Oswald 1984-6-11 1285 Butte Humboldt Road, 0.8 mi E of Cherry Hill Campground. 1524 Comment
  UC436291  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  SEINET12217260  Saxifraga arguta L. P. Janeway, Schlising, R. A. 1988-1 3057 Butte at beginning of Coon Hollow Creek on SW slopes of Coon Hollow 1920 Comment
  POM196050  Saxifraga oregana H. F. Copeland 1929-06 1240 Butte Jonesville. 1524 Comment
  CHSC40633  Scandix pecten-veneris Lowell Ahart 1985-4-1 4875 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 30 Comment
  UCD49967  Schoenoplectus mucronatus Bellue 1947-7-23 s.n. Butte NW Foster Bx730 Princeton, 1 mi. S- 1 m; W. Butte City 4 Corners. Comment
  CAS-BOT-BC111650  Schoenoplectus mucronatus Lowell Ahart 1978-7-22 1848 Butte On SE corner of Richvale Est Rd and Erickson Rd. Richvale, in ricefield. 30 Comment
  SEINET10839824  Scirpus cernuus var. californicus Lowell Ahart 1984-5-12 Ahart 4605 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  SEINET11750452  Scirpus congdonii L. Ahart, Ahart, P. 1984-1 4754 Butte ca 1.5 mi SE of Bald Mt, 0.25 mi E of Oak Pt., ca 5 mi NE of Stirling City 1750 Comment
  RSA4222  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  UC1542874  Scirpus diffusus E. B. Copeland June 1931 Butte Jonesville Comment
  CAS-BOT-BC239961  Scribneria bolanderi John Thomas Howell 1967-6-22 42617 Butte Magalia 701 Comment
  CAS-BOT-BC214186  Scutellaria Clare B. Hardham 1975-6-7 20426 Butte South end of Oroville Dam Comment
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  RSA3813  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek, east of Chico. Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  CHSC71111  Sedella pumila Jan Monelo 1989-4-11 5 Butte Ca 50 yds e of Covered Bridge, ca 7 mi e of Chico. 121 Comment
  JEPS124221  Sedella pumila Lowell Ahart 2015-3-27 19979 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  HSC23383  Sedella pumila Larry D. Scott 1971-4-7 4 Butte 4 mi. NE of Chico, 20 yds. N of Skyway Comment
  SD8318  Sedella pumila R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC63853  Sedum spathulifolium J. F. Emmel 1970-4-5 251 Butte 1/3 air mile E of Richardson Springs along Mud Creek, on S side of creek. 213 Comment
  CAS-BOT-BC62117  Selaginella hansenii Lowell Ahart 1961-3-3 s.n. Butte Salmon Hole, Chico 91 Comment
  SEINET10530434  Selaginella hansenii Mary Susan Taylor 1981-1-5 Taylor 3371 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC65799  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River. 441 Comment
  SEINET10872075  Senecio eurycephalus var. lewisrosei Heidi H. Schmidt 1993-6-15 Schmidt 869 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CAS-BOT-BC213676  Senecio lewisrosei Lewis S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi. s. of Pulga, Canyon side 609 Comment
  UCD146246  Senecio sylvaticus Daniel S. Park 2010-4-10 15 Butte Table Mt. near creek. 339 Comment
  JEPS117292  Senecio triangularis Lowell Ahart 2010-9-21 17206 Butte Open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC101284  Senecio vulgaris Lowell Ahart 2009-4-17 15539 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  JEPS119600  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CHSC36296  Sericocarpus oregonensis M. S. Taylor 1982-8-16 4986 Butte Just N of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  UC1563269  Setaria pumila unknown 1990-10-21 6638 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  CHSC109760  Setaria pumila subsp. pumila Lowell Ahart 2012-10-20 18493 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC34225  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70 (Feather River Hwy), ca. 4 air mi NW of Oroville. (center of sec 26). 91 Comment
  JEPS103295  Sherardia arvensis Lowell Ahart 2002-5-7 9643 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
  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
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. Comment
  CHSC42239  Sidalcea calycosa Steven Webster 1986-4-2 4 Butte Large poulation, ca. 1 mi e of Chico. 76 Comment
  CHSC90227  Sidalcea calycosa Michael J. McNairn 1989-4-17 5 Butte Ca. 100 yds. ne of jct. Lupin Ave. and Ceres Ave. ne Chico. 76 Comment
  UCD116652  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville. 1550 Comment
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC52444  Sidalcea hartwegii Laraine Roothoff 1979-4-24 16 Butte Moderate-size population on the S side of Skyway, ca. 4 mi W of Paradise. 304 Comment
  UC725445  Sidalcea hartwegii A. A. Heller 1940-5-5 15573 Butte above the 10 Mile House site (between Big and Little Chico Creeks); between Big and Little Chico Creeks Comment
  UC398675  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte along Little Chico Creek (in the gravelly bed of Little Chico Creek); along Little Chico Creek Comment
  CHSC44085  Sidalcea hirsuta John E. Hunter 1986-3-31 42 Butte Vacant lot within City of Chico, ca. 75 m nw of the intersection of East Ave. and Ceanothus. 62 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
  UC1125000  Sidalcea oregana subsp. spicata P. L. Johannsen 1936-7-21 956 Butte 1 mi ene Chaparral House; Lassen National Forest, Paynes Creek Comment
  CHSC37440  Sidalcea robusta R. A. Schlising 1982-2-21 4225 Butte S of Paradise, near Elliot Spring House; slopes of Hamlin Canyon. 213 Comment
  CHSC76948  Sidalcea robusta Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  SD3019  Sidalcea spicata E. B. Copeland 1930-7-15 Butte Jonesville. 1500 Comment
  UC1562425  Silene antirrhina Lowell Ahart 1990-5-25 6478 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  UC203623  Silene gallica A. A. Heller 1914-4-24 11319 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC24877  Silene laciniata subsp. californica T. L. Reynolds 1976-4-23 57 Butte .6 mi ne of Covered Bridge, 7.5 mi ese of Chico. 152 Comment
  CHSC90050  Silene laciniata subsp. californica Peggy Fain 1991-4-21 19 Butte Ca. 3 km. E. of Richardson Springs Hotel, N. side of Walker Creek, Musty Buck Preserve. 243 Comment
  SBBG16971  Silene laciniata subsp. californica M. Vincent 1962-4-16 198 Butte Pentz Rd, small reservoir 0.25 mi off rd, 5 mi S of Paradise Comment
  CHSC48264  Silene occidentalis subsp. occidentalis Vernon Oswald 1987-6-29 3039 Butte Jones Meadow Rd. e of Inskip, ca. 0.3 mi e of the intersection of the last section of road to Jones Meadow, at the East Fork of Last Chance Creek. On the n side of the creek. 1734 Comment
  UC203873  Sisyrinchium A. A. Heller 1914-7-23 11606 Butte Chico Meadows, at base of n slope Chico Meadows; Sierra Nevada 1219 Comment
  CHSC44521  Sisyrinchium bellum Lowell Ahart 1988-4-30 5971 Butte Near a small stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  RSA4634  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville 1500 Comment
  UC2026883  Solanum jasminoides Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17870 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  HSC97107  Solanum parishii L. Ahart 2006-5-19 12633 Butte W side of Bardees Bar Rd., S of small stream, .25 mi. SW of the bridge across the N Fork of the Feather River, 2.75 mi. SW of Pulga 406 Comment
  CAS-BOT-BC231712  Solanum umbelliferum Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC365382  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC364941  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  CHSC102998  Sonchus asper subsp. asper Lowell Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC424  Sonchus oleraceus J. Turner 1930-5-14 Butte Chico Creek road. 76 Comment
  CHSC66156  Sonchus oleraceus Vernon H. Oswald; Lowell Ahart 1996-5-27 7669 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS127078  Sonchus oleraceus Lowell Ahart 2015-11-21 20691 Butte On the north side of home, Peter Ahart Ranch, about 1 1/2 miles north and one mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  CHSC66465  Sorghum halepense Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .2 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC76432  Sorghum halepense Lowell Ahart 1999-10-28 8318 Butte On the east margin of the river, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC84632  Spartium junceum Matt Quinn 2001-4-29 49 Butte Along creeks in the foothills of Butte County. Collected on gravel bar on Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CHSC40791  Spergula arvensis subsp. arvensis Lowell Ahart 1985-5-31 5031 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC50032  Spergula arvensis subsp. arvensis Lowell Ahart 1990-1-17 6406 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
  SEINET3450876  Spergula arvensis subsp. arvensis Unknown 2003-6-23 10307 Butte Oroville, Oroville, about 12 miles southeast, about 2 miles north and 2 miles east of Honcut, about 0.5 miles east of the Palermo Honcut highway, Peter Ahart Ranch 30 Comment
  CHSC45898  Spergularia bocconi Lowell Ahart 1974-6-9 478 Butte Near roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS107747  Spergularia bocconi Lowell Ahart 2005-5-28 11827 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 67 Comment
  RSA0118768  Spergularia bocconi Lowell A. Ahart 2013-4-20 18563 Butte In corral at the barn, about 0.25 mile north of the Honcut Cemetery, about 3.25 miles (air) northeast of Honcut. 48 Comment
  CAS-BOT-BC390598  Spergularia rubra Lowell Ahart 1984-6-10 4707 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  SEINET10537508  Spergularia rubra Mary Susan Taylor 1979-8-4 Taylor 2182 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  JEPS121989  Sphenosciadium capitellatum Lowell Ahart 2014-7-13 19648 Butte North part of meadow, about 100 yards southeast of Philbrook Road, about 1 air mile west of Philbrook Reservoir. Comment
  CHSC808  Stachys ajugoides var. rigida M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC102960  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage 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
  CHSC43644  Stachys pycnantha B. Castro 1987-8-25 205 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC48500  Stachys pycnantha Vernon H. Oswald 1986-7-7 2185 Butte Millsqap Bar Rd. 3.6 mi e of Bald Rock Rd. near Brush Creek. 914 Comment
  CHSC99474  Stachys pycnantha Lowell Ahart 2008-7-23 15146 Butte North edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10499270  Stachys pycnantha Lowell Ahart 1990-10-3 Ahart 6615 Butte Along the sides of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC52207  Stachys stricta L. P. Janeway 1988-6-26 2882 Butte SE rim of Coon Ridge, overlooking Nance Cyn; ca 0.6 mi NE of the power lines (high voltage). S-facing seep at the rim. 182 Comment
  UC1594538  Stellaria borealis subsp. sitchana Lowell Ahart 1992-8-2 6902 Butte about 3 air mi ne Concow Reservoir (on w side of Concow Meadow); Concow Meadow 1097 Comment
  CHSC11852  Stellaria longifolia E. B. Copeland 1931-1-1 638 Butte Jonesville. In meadows. 1500 Comment
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May 18 2006
  RSA0041905  Stellaria longipes subsp. longipes Lyman Benson 1932-7-28 3963 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC39071  Stellaria media R. A. Schlising 1983-3-20 4399 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99 and across from Thermalito Afterbay. Near fences. Comment
  CAS-BOT-BC395115  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the N Fork of the Feather River, a little N of the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  CAS-BOT-BC395117  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte S of Lumpkin Ridge Road, 1.5 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CAS-BOT-BC395118  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte about 1/2 mile SW of the Forbestown Res., along the road where tere is a serpentine slide area, about 4 miles NE of Forbestown 450 Comment
  JEPS109818  Stellaria obtusa Dean W. Taylor 2004-7-21 19201 Butte Coon Hollow, upper reaches thereof ca. 0.3 miles above the creek crossing of Forest Road 26N74 (High Lakes Road), watershed West Branch Feather River 1706 Comment
  POM219143  Stellaria obtusa H. F. Copeland 1930-7-21 s.n. Butte Jonesville. Comment
  CAS-BOT-BC375203  Stephanomeria elata Mary E. Wall 1935-11-10 s.n. Butte Paradise Comment
  CHSC45773  Stephanomeria lactucina Vernon Oswald 1983-7-19 886 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  CAS-BOT-BC375764  Stephanomeria virgata Lowell Ahart 1980-7-20 2470 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  SEINET10508392  Stipa lemmonii Lowell Ahart 1983-6-15 Ahart 4054 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  SEINET10508395  Stipa nelsonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3522 Butte T22N R4E ne sec 2, Pulga SW quad. S-facing barren serpen- slope ca. 50 ft. up from creek, ca. 1/4 mi n of Pine Cluster Ranch, base of open dry serptentine outcrop between Concow Rd and a large knoll, ca. 6 mi n of Jarbo Gap on Hwy 70; 2400 ft. 721 Comment
  SEINET10480710  Streptanthus Mary Susan Taylor 1979-6-12 Taylor 2306 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  SEINET10448513  Streptanthus campestris Lowell Ahart 1983-9-17 Ahart 4434 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  HSC96684  Streptanthus diversifolius L. Ahart 2006-5-3 12555 Butte 0.25 mi. N of the parking area, cow chute, and Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 403 Comment
  CHSC38026  Streptanthus drepanoides R. E. Preston 1982-6-2 293 Butte Ca. 0.6 mi ese of Kunkle Reservoir, on W. Branch Feather River arm of Lake Oroville, ca. 4.5 mi se of Paradise. 280 Comment
  UCD116032  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CHSC33180  Streptanthus polygaloides R. E. Preston 1981-6-2 77 Butte Ca. 50 m n of Rim Rd., 5.3 km from its jct with Hwy 70 at Jarbo Gap, ca. 32 km n of Oroville. 854 Comment
  JEPS118207  Streptanthus polygaloides Dean W. Taylor 2004-6-17 19112 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CAS-BOT-BC87514  Streptanthus tortuosus A. A. Heller 1938-4-14 15031 Butte Top of Table Mountain. 304 Comment
  UCD164223  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss 2013-4-19 IC-SS 300 Butte Table Mountain. 1157 Comment
  HSC96692  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte N High Sierra Nevada, 0.6 km E of Concow Rd., 1.1 km NE of Rag Dump, 3.8 mi. N of Flea Mtn. 1248 Comment
  CHSC73827  Styrax officinalis var. redivivus B. Castro; L. Hanson 1996-8-22 719 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with it South Branch, on the extreme W end of Mtn Spring House Ridge. On SW-facing slope of knoll, ca 0.2 mi NW of overlook to Seven Falls. 969 Comment
  CAS-BOT-BC48064  Styrax redivivus Lowell Ahart 1989-5-29 6309 Butte along the edge of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, 822 Comment
  CHSC20898  Symphyotrichum bracteolatum M. S. Taylor 1975-8-31 884 Butte On Ernies Island in Butte Creek, ca 50 ft S of Humboldt Rd, ca 1/2 mi E of Butte Meadows. 1341 Comment
  CHSC110351  Symphyotrichum subulatum var. parviflorum B. Castro; Margie Graham 2006-9-7 1610 Butte Sacramento Valley. 2 mi W of Hwy 99, 3 mi ESE of Richvale and ca 600 ft S of Richvale Hwy in Cherokee Canal.. 32 Comment
  CHSC76399  Symphyotrichum subulatum var. parviflorum Lowell Ahart; Vernon H. Oswald 1999-10-3 8291 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
  RSA715887  Tamarix parviflora L. Ahart 2005-4-2 11697 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC46799  Tanacetum vulgare R. A. Schlising 1987-9-27 4546 Butte N of Pulga along N. Fork Feather River. Comment
  CHSC34796  Tauschia kelloggii M. S. Taylor 1981-5-15 3754 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CAS-BOT-BC445890  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Mosquito creek between Appleton and Coutelence. Comment
  RSA304699  Tellima grandiflora James R. Shevock 1972-5-19 1787 Butte Feather River Cyn. 625 Comment
  CHSC84174  Thelypteris nevadensis Lowell Ahart 2003-7-12 10379 Butte On the south side of Milsap Bar Road, about 1 mile (air) southeast of the Brush Creek Work Center, about 16 miles (air) northeast of Oroville. 1048 Comment
  SEINET10471411  Thelypteris nevadensis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4222 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC88224  Thysanocarpus curvipes John Thomas Howell 1976-4-1 51527 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 152 Comment
  CAS-BOT-BC88231  Thysanocarpus curvipes Copeland 1903-4-10 3031 Butte Chico. Comment
  CHSC2817  Thysanocarpus curvipes David Prall 1965-3-14 12 Butte Next to Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC35022  Thysanocarpus curvipes R. E. Preston 1982-3-25 202 Butte Along dirt road on n side of Feather River canyon, ca. 1/2 mi e of Pulga. 487 Comment
  CHSC3512  Thysanocarpus curvipes M. Gregg 1966-2-28 26 Butte In Upper Bidwell Park. 400 yards up a hill northwest of Salmon Hole. Comment
  CHSC90236  Thysanocarpus curvipes Jody Henderson 1989-3-22 2 Butte 200 yds n of Rock creek, Hwy 99 to Meridian Rd to Kilkare ln, 6 mi. n of Chico, 0.25 se of Kilkare ln. 72 Comment
  RSA769607  Thysanocarpus curvipes var. curvipes L. Ahart, John Dittes 2009-3-20 15500 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  POM95119  Thysanocarpus curvipes var. curvipes C. C. Bruce