Search Results — 2000 specimen records retrieved (1598 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
  CHSC97719  Abutilon theophrasti Lowell Ahart 2007-10-31 14516 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. Comment
  CHSC111733  Acer circinatum Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 B Butte About 50 yards south of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC330613  Acer glabrum var. glabrum A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  UC600814  Acer glabrum var. glabrum H. F. Copeland 1929-6-11 Butte near Butte Creek (Jonesville); near Butte Creek, Jonesville 1524 Comment
  CHSC103159  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 181 Comment
  CHSC44463  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte along a dirt road west of the Poe Power House, east of the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 274 Comment
  UCD117057  Acer macrophyllum Johann Watjen 1969-5-4 36 Butte confluence of Rock Creek and Feather River North Fork, Feather River Canyon. 457 Comment
  SEINET10473513  Achillea lanulosa Mary Susan Taylor 1975-8-31 Taylor 889 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC210639  Achnatherum lemmonii R. A. Schlising 1978-4-23 3229 Butte Magalia; just s of the Magalia Reservoir (just w of S. T. RR and Coutelenc Road) Comment
  CAS-BOT-BC210641  Achnatherum lemmonii John Thomas Howell 1962-6-16 37566 Butte Magalia 731 Comment
  CHSC103109  Achnatherum lemmonii Lowell Ahart 2009-5-30 15796 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC39672  Achnatherum lemmonii Lowell Ahart 1983-6-21 4087 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 137 Comment
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  UCR187085  Achyrachaena mollis Anna M. Hurlbutt, C. R. Weeks 2007-4-26 007 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC113845  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19276 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC25542  Acmispon americanus var. americanus Robert A. Schlising 1977-7-20 3196 Butte Just north of Magalia, along Coutelenc Road. In rocks along railroad tracks. 670 Comment
  CHSC98960  Acmispon parviflorus Lowell Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC39539  Acmispon strigosus Lowell Ahart 1983-5-28 4021 Butte Above the trail about 1/4 mile from the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC86853  Acmispon strigosus L. P. Janeway; John Hunt, Adam Henderson 2003-5-13 7785 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek. 290 Comment
  SEINET12765130  Acmispon strigosus Lowell Ahart 2014-5-13 19458 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  CHSC44495  Acmispon wrangelianus Lowell Ahart 1988-4-29 5965 Butte Near the ditch which was part of the Honcut Flume, on Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CAS-BOT-BC412869  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CHSC34190  Actaea rubra L. Ahart 1981-9-21 3194 Butte Along Pinkard Creek, ca. 1/2 mi n of the Lost Creek Reservoir. 1100 Comment
  SD5472  Adenocaulon bicolor E. B. Copeland 1930-8-9 Butte Jonesville 1500 Comment
  CHSC30851  Adiantum capillus-veneris L. Ahart 1980-9-10 2628 Butte Ca. 1 mi ne of Millsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  UC1499973  Adiantum capillus-veneris Lowell Ahart 1983-7-29 4236 Butte ca. 25 mi ne Oroville (ca. 1/2 mi e of Milsap Bar) 500 Comment
  CAS-BOT-BC65557  Adiantum capillus-veneris M. S. Taylor 1979-10-3 2217 Butte s side of Butte Creek, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd., 243 Comment
  CHSC90135  Adiantum jordanii Greg Johansen 1983-4-16 1 Butte About 200 yds south of Butte Creek and 200 yds southeast of the Covered Bridge, 6 mi east-southeast of Chico. 274 Comment
  SEINET3868326 Image available Adiantum jordanii M. S. Taylor 1980-3-1 2340 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi N of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico.; 0 122 Comment
  CDA42880  Aegilops triuncialis L. Ahart 2012-5-2 18093 Butte On the north side of the poor fence, near a large oak tree, about 40 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  JEPS97429  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte 7 mi N of Oroville (North Table Mountain, dirt road, S of Beatson Hollow, about 1/8 mi N of Cherokee Road) 335 Comment
  RSA718339  Aegilops triuncialis L. Ahart 2006-6-9 12640 Butte Along the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  UCD51548  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC22967  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC101652  Agoseris heterophylla Lowell Ahart 2009-4-26 15634 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road,. On the east side of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC20249  Agoseris heterophylla M. Banning 1969-4-18 61 Butte Junction of Pentz Rd. and Pentz Magalia Rd. 304 Comment
  CHSC33795  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of Spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n. of Pulga, ca. 5 air mile of Magalia. 1097 Comment
  CAS-BOT-BC127329  Agrostis exarata H. F. Copeland 1920-8-1 170 Butte Jonesville. 1219 Comment
  CHSC112330  Agrostis exarata Lowell Ahart 2013-7-9 18826 Butte South side of North Honcut Creek, east of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC37096  Agrostis exarata L. Ahart 1982-9-13 3823 Butte By Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC42996  Agrostis exarata Lowell Ahart 1987-7-8 5799 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  UC1563282  Agrostis exarata Lowell Ahart 1990-9-30 6608 Butte about 1/8 mi ne Canyon Creek Bridge across Lake Oroville (below the high water line of Lake Oroville); Lake Oroville, East Fork of Canyon Creek 243 Comment
  SEINET10789948  Agrostis exarata Lowell Ahart 1988-7-24 Ahart 6127 Butte Spike Bentgrass. On dry soil, silt bar on the bottom of a deep ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west oof Robinson Mill Road, Butte County, California. 732 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-BC139437  Agrostis hyemalis A. A. Heller 1914-7-23 11613 Butte In Chico Meadows. 1219 Comment
  CHSC50566  Agrostis pallens Vernon Oswald 1990-7-10 4359 Butte Head of Feather Falls, ca. 4 mi north of the town of Feather Falls. 579 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
  CAS-BOT-BC138772  Agrostis scabra A. A. Heller 1914-8-6 11647 Butte Chico Meadows. 1219 Comment
  CHSC113105  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  RSA129697  Agrostis scabra H. S. Yates 1936-8-13 6109 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  UCD53331  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  SEINET10790425  Agrostis thurberiana Vernon H. Oswald, Lowell Ahart 1991-8-19 Oswald 4836 Butte T25N R5E sw/se/S6, Red Fir Forest. Spring-fed, marchy meadow and lake on the north side of Forest Rd 25N15 between Philbrook Reservoir and Coon Hollow. Occasional grass forming small tufts on the marshy meadow. 1768 Comment
  JEPS117684  Agrostis variabilis Lowell Ahart 2010-9-21 17220 Butte 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
  CHSC107926  Albizia julibrissin L. P. Janeway 2011-7-7 10503 Butte Sacramento Valley. Near edge of water, south side of Feather River just east of Bedrock Park, Oroville. On old gravel bar several feet from the water. 41 Comment
  CHSC112458  Alisma lanceolatum Lowell Ahart 2013-5-23 18707 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast from Honcut. 54 Comment
  CHSC33668  Alisma lanceolatum L. Ahart 1981-5-25 2837 Butte In a depression along side of rice field, along Central House Rd, ca. 1 1/4 mi nw of Honcut. 35 Comment
  CHSC49466  Alisma triviale Vernon Oswald 1987-6-15 3000 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  CHSC84021  Alisma triviale Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  RSA0037497  Alisma triviale Lowell A. Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  UCD137973  Alisma triviale J. Jones 1924-9-20 s.n. Butte Biggs Comment
  UCD137959  Alisma triviale L. Ahart 1975-7-5 853 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3460  Allium amplectens Roger Jaegel 1966-4-10 98 Butte Located along Pentz Road, two miles east of the intersection of Highway 99. Comment
  UCD80409  Allium amplectens CNPS SN Foothill Team 2005-4-13 SNFN 0078 a Butte City of Chico, Doe Mill Meadowfoam Preserve, at the east end of Warfield Street, on the east side of the creek diversion between the diversion and the creek, ~85 m south of the Preserve gate entrance. 82 Comment
  SEINET12046590  Allium amplectens K. D. Johnson 1978-1 14 Butte E side of Cohasset Rd., .7 mi SE of Chico Municipal Airport control tower, 5 mi N of Chico 73 Comment
  CAS-BOT-BC465444  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC466717  Allium cratericola A. A. Heller 1938-4-3 15012 Butte Flat summit of Table Mountain 304 Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  JEPS122448  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5' Comment
  JEPS109801  Allium jepsonii Dean W. Taylor 2004-6-17 19110 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  UCD138550  Allium jepsonii B. Castro; Plumas NF botanists 1994-6-28 515 Butte ca. 0.4 mile south of Pulga, west side of Pulga Road, ca. 0.4 mile north of its junction with Hwy 70 by the Pulga Brige. 487 Comment
  CHSC29839  Allium membranaceum K. R. Stern 1980-6-17 6659 Butte Nimshew. 716 Comment
  RSA770517  Allium membranaceum S. Mashayekhi, M. Biabani 2010-6-11 SM 060 Butte North of Lake Oroville, 0.8 miles south of Bald Rock Road, with its junction with Oroville-Quincy Hwy at Brush Creek. East side of the dirt road. 1045 Comment
  CAS-BOT-BC472965  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Cap; Sierra Nevada Comment
  POM110046  Allium peninsulare var. peninsulare George B. Grant 1902-05 H 5538 Butte Clear Creek. Comment
  CAS-BOT-BC171272  Alnus incana subsp. tenuifolia H. F. Copeland 1920-8-29 142 Butte Jonesville, Dry Creek 1219 Comment
  CHSC47975  Alnus incana subsp. tenuifolia Vernon Oswald 1984-7-31 1642 Butte Scotts John Creek at 26N27. 1755 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
  OBI69161  Alnus rhombifolia Kari Fisher 2000-11-10 46 Butte Chico State Campus, along Big Chico Crk 79 Comment
  SEINET10478439  Alnus rhombifolia Mary Susan Taylor 1979-10-12 Taylor 2242 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CAS-BOT-BC138171  Alopecurus aequalis var. aequalis Vernon Oswald; Lowell Ahart 1987-7-1 3060 Butte Lily Pond located ca. 0.6 mile (air) west of Butte Creek House and 0.25 mile south of Humbug Road, ca. 2.75 mile (air) southeast of Jonesville. 1813 Comment
  CAS-BOT-BC138036  Alopecurus carolinianus Lowell Ahart 1977-4-19 1523 Butte Peter Ahart Ranch, Honcut. Found growing in our grain fields. 50 Comment
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  CHSC59038  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte On the south side of the Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  JEPS104335  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, ca 50 yd e of the drain ditch, ca 20 yd n of Hamilton Rd, ca 3/8 mi e of Riceton Highway, ca 10 mi sw of Oroville. 29 Comment
  RSA715579  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD55884  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Honcut, Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC137943  Alopecurus saccatus Lowell Ahart 1980-5-4 2169 Butte Thermalito. 65 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
  SEINET11665626  Alopecurus saccatus Unknown 1978-1 1705 Butte E of large parking area, on top of North Table Mountain, ca 7 mi N of Oroville 396 Comment
  CHSC113104  Amaranthus albus Lowell Ahart 2013-11-18 19280 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC42946  Amaranthus powellii Lowell Ahart 1987-7-3 5756 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC75961  Amaranthus rudis Lowell Ahart 1999-8-13 8175 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
  CHSC32141  Ambrosia psilostachya Lowell Ahart 1973-11-1 289 Butte On dry deep rich soil, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC142903  Amelanchier A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the Feather River at the foot of the grade leading down from Stirling City Comment
  CHSC32138  Ammannia robusta L. Ahart 1974-9-8 631 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3751  Amsinckia intermedia R. L. Adams 1964-4-15 63 Butte W. side Webb Ave., 200 yds. From Rose Ave. Chico. Comment
  CHSC90931  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
  UCSB63598  Amsinckia intermedia Holloway, Steve 1986-4-18 Butte 10 m E of Humboldt Rd. 7.3 km NNE of Chico ( Hamlin Canyon Quadrangle, 7.5 minute series; NW1/4, Sec. 22, T22N, R2E) 220 Comment
  JEPS104334  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  POM90768  Amsinckia menziesii var. menziesii A. A. Heller 1914-4-21 11309 Butte Chico. Comment
  NY158191  Ancistrocarphus filagineus R. M. Austin 03 1883 s.n. Butte Adobe Flats, Little Chico Comment
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  CHSC31898  Anethum graveolens L. Ahart 1975-7-7 854 Butte In garden on good soil; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  CHSC262  Anthemis cotula B. Richardson 1929-5-25 Butte Chico. Comment
  CHSC46331  Anthemis cotula Lowell Ahart 1989-5-23 6251 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC6089  Anthemis cotula B. Wilson 1968-5-11 200 Butte Corner's Gas Station. Comment
  UCD128971  Anthemis cotula L. Ahart 1982-4-29 3390 Butte Graylodge Wildlife Refuge. A little W of check-in station. Ca. 12 miles SW of Gridley. 35 Comment
  CHSC78357  Anthoxanthum odoratum Lowell Ahart 2000-6-29 8539 Butte On the northwest side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC14026  Anthriscus caucalis J. A Brattan 1974-4-15 5 Butte Abundant at the base of a cliff 300 yds s of the 9th hole on the Bidwell Municipal Golf Course. 91 Comment
  JEPS107279  Anthriscus caucalis Lowell Ahart 2005-4-18 11729 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
  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
  CHSC1685  Antirrhinum vexillo-calyculatum subsp. intermedium E. Walker 1932-7-26 Butte Magalia Heights. 762 Comment
  CHSC25337  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-12 30 Butte 100 m from the intersection of Highway 70 and Pulga Raod. 426 Comment
  CHSC97399  Antirrhinum vexillo-calyculatum subsp. intermedium Robert Fischer 2006-6-27 1005 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC30880  Aphanes occidentalis J. D. Jokerst 1979-4-1 1165 Butte Top of North Table Mt, S of the intersection of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC46398  Aphanes occidentalis Lowell Ahart 1989-5-28 6276 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS116037  Aphanes occidentalis Lowell Ahart, John Dittes 2009-3-20 15504 Butte Open area along the the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Ch 407 Comment
  JEPS129818 Image available Aphyllon epigalium Karen D. Cox 1974-6-1 188 Butte Paradise, found in yard at 1332 Elliott Road. Comment
  CHSC83895  Aphyllon purpureum Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, southwest of drainage entering 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. 284 Comment
  CHSC46839  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-18 214 Butte N part of county near Snow Mt. 2072 Comment
  CAS-BOT-BC17267  Arabidopsis thaliana Lowell Ahart 1990-3-19 6416 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  CHSC110037  Arbutus menziesii Lowell Ahart 2012-10-28 18530 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  CAS-BOT-BC407719  Arceuthobium abietinum E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1600 Comment
  CHSC105816  Arceuthobium abietinum Lowell Ahart 2010-9-21 17197 Butte Near the top of a tree over 100 feet tall, tree was cut down for lumber, on the west side of the County Road, about 1/4 mile north of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1911 Comment
  CHSC33970  Arceuthobium abietinum M. S. Taylor; L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA632986  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27448 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633006  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27479 Butte Ponderosa Way, south of Cohasset. 750 Comment
  UCD52090  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51095 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52161  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51089 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52243  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51563 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC24701  Arctostaphylos manzanita subsp. manzanita J. R. Nelson 1976-3-1 6 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  CHSC41204  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-6-4 2042 Butte E of Camp Creek ca 400 meters. Canyon of the North Fork Feather River. 975 Comment
  CHSC48372  Arctostaphylos nevadensis Vernon Oswald 1983-8-17 994 Butte On Humboldt Peak, NE of Jonesville. 2158 Comment
  POM219428  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  SEINET10973497  Arctostaphylos patula Mary Susan Taylor 1974-5-20 Taylor 255 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  UCD51935  Arctostaphylos truei John Thomas Howell 1975-6-15 51110 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  UCD52627  Arctostaphylos viscida R. R. Kehlor 1951-4-14 25 Butte Foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road, Butte County, California. Comment
  UCD52634  Arctostaphylos viscida M. S. Taylor; T. 1981-11-11 3376 Butte E side of Lumpkin Rd, ca. 300 ft n of Macabes Creek, ca 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Comment
  CAS-BOT-BC47378  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51098 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  JEPS118321  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 47 Comment
  SBBG126077  Arctostaphylos viscida subsp. viscida L. Ahart 2012-3-2 17762 Butte ca 200 yards N of Ten Mile House Rd, ca 200 yards W of Hwy 32, ca 9 mi NE of Chico 422 Comment
  UC195408  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC34820  Arenaria macrophylla M. S. Taylor 1981-5-12 3690 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC110101  Aristida oligantha L. P. Janeway 2012-9-29 11061 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Mid-dle Trail 0.3 km northwest of Bear Hole parking area. 128 Comment
  CHSC26759  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On the s side of Pentz Rd. Ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  SEINET10935028  Aristida oligantha Lowell Ahart 1983-8-16 Ahart 4278 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  CHSC10548  Aristolochia californica Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UC143064  Aristolochia californica Dr. E. B. Copeland 1903-4-10 3044 Butte Chico Comment
  UCD137812  Aristolochia californica Kathy Corson 1969-4-6 11 Butte Stillsen Canyon Creek bottom, past the garbage dump 9 miles east of Chico. Comment
  SEINET10971030  Aristolochia californica Mary Susan Taylor 1980-2-17 Taylor 2359 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC43188  Arnica dealbata Robert Banchero 1981-8-4 641 Butte Ca 1.7 mi n of Scotts-John Rd and Jonesville Rd jct. Meadow. 1828 Comment
  CHSC34052  Arrhenatherum elatius L. Ahart; M. S. Taylor 1981-8-15 3050 Butte Ca. 200 m w of the store at the e end of Philbrook Reservoir, ca. 10 mi ne of Inskip. 1500 Comment
  SEINET10935029  Arrhenatherum elatius Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4189 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
  CHSC20901  Artemisia douglasiana M. S. Taylor 1975-8-31 894 Butte Ca. 50 ft S of Humboldt Rd, on Ernies Island in Butte Creek, ca. 1/2 mi E of Butte Meadows. 609 Comment
  CAS-BOT-BC93884  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10507281  Arundo donax Mary Susan Taylor 1975-10-3 Taylor 936 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CAS-BOT-BC400632  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SEINET10475950  Asarum hartwegii Mary Susan Taylor 1979-5-4 Taylor 1992 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10573068 Image available Asarum hartwegii A. Arthur Heller 1915-4-12 Heller 11809 Butte Near Cohasset, near the upper limit of the digger pine belt, on cool, shaded stream banks under trees of Quercus Kelloggii. Comment
  CHSC91262  Asarum lemmonii L. P. Janeway; David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump. 1134 Comment
  CHSC115447  Asclepias cordifolia M. Sutton; K. Schierenbeck 2013-5-5 46 Butte Deer Creek. 657 Comment
  CHSC80750  Asclepias eriocarpa Lowell Ahart 1998-7-18 8043 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SBBG128023  Asclepias fascicularis L. Ahart 2011-8-17 17629 Butte ca. 100 yards W of the table at the old homestead and SW of Ten Mi House Rd, upper Bidwell Park, ca. 0.75 mi (air) SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 239 Comment
  CHSC31438  Asclepias speciosa L. Ahart 1980-7-29 2502 Butte Small open area near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC6611  Asparagus officinalis M. MacArthur 1968-6-17 296 Butte SW yard of Building D on the Chico State College Campus. 60 Comment
  POM120432  Aspidotis californica C. C. Bruce 1897-06 1869 Butte Iron Canyon. Comment
  SEINET10529844  Aspidotis californica Mary Susan Taylor 1976-3-6 Taylor 1008 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC28625  Aspidotis densa M. S. Taylor 1979-3-19 1927 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC32687  Aspidotis densa M. S. Taylor 1981-3-18 3417 Butte N side of Pulga Rd at jct with Hwy 70 Pulga bridge. 487 Comment
  SDSU6298  Aster hesperius D. F. Howe 1960-9-20 2987 Butte North of Feather River, 28 miles from Oroville. 518 Comment
  CDA10332  Aster oregonensis subsp. californicus T. C. Fuller 1962-7-12 9162 Butte East side of Pentz-Magalia Road just south of Merrill Road, 1.2 miles south of Magalia. 0 Comment
  CHSC31441  Aster radulinus Lowell Ahart 1980-9-10 2640 Butte Ca. 7 mi E of Millsap Bar, ca. 32 mi NE of Oroville. 1200 Comment
  POM180851  Aster subulatus var. parviflorus H. F. Copeland 1923-1 866 Butte Nelson Comment
  CAS-BOT-BC178464  Astragalus gambelianus Lowell Ahart 1989-5-10 6227 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  JEPS119575  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 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
  CAS-BOT-BC192798  Astragalus pauperculus Robert F. Hoover 1938-4-24 3236 Butte 3 miles north of Chico Comment
  UC204731  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 mi from Chico; 11 mi from Chico Comment
  CAS-BOT-BC193219  Astragalus tener var. ferrisiae Mrs. C. C. Bruce 1898-5-1 2432 Butte Sacramento River Comment
  CHSC80525  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC28411  Athyrium filix-femina M. S. Taylor 1977-7-16 1422 Butte Along west branch of Feather River, ca. 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  CAS-BOT-BC68686  Athyrium filix-femina var. californicum Lowell Ahart 1981-9-15 3153 Butte Sierra Nevada - One hald mile N of the Lost Creek Reservoir 1100 Comment
  UC474218  Athyrium filix-femina var. cyclosorum H. F. Copeland 1928-8-18 1017 Butte neighborhood of Jonesville (woods near Butte Creek) 1600 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3954  Athysanus pusillus E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards Ne. of Chico Municipal Golf Course. Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, 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
  CHSC46866  Atriplex argentea var. mohavensis Vernon Oswald 1989-9-6 3982 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.9 mi w of Pennington Rd. 19 Comment
  JEPS90593  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte on w side of a levee road and on s side of Rutherford Rd. just e headquarters complex (ca. 1.75 mi w of Pennington Rd., w of Gridley); Gray Lodge Wildlife Management Area 19 Comment
  SEINET516426  Atriplex rosea Lowell Ahart 1982-1 3662 Butte Small size plant, growing on ddry bare packed soil, in the parking area around the Gray Lodge Waterfowl Management Area check in station, about 12 mi SW of Gridley. 30 Comment
  CAS-BOT-BC311784  Atriplex serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC34771  Atriplex serenana L. Ahart 1981-10-6 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  SEINET516427  Atriplex serenana Lowell Ahart 1981-1 3218 Butte Small part of a plant about 2 1/2 ft. tall, growing on good soil, near the entrance to the Gray Lodge Waterfowl Management Area, just W of Pennington Rd., about 12 mi SW of Gridley. 30 Comment
  CAS-BOT-BC176603  Atriplex serenana var. serenana Lowell Ahart 1989-9-28 6400 Butte On the east side of Highway 70, near Garden Drive off ramp, Thermalito 73 Comment
  CAS-BOT-BC176606  Atriplex serenana var. serenana Lowell Ahart 1977-7-24 s.n. Butte Gray Lodge, 10 miles southwest of Gridley 30 Comment
  CHSC111715  Avena barbata Lowell Ahart 2012-6-2 18134 Butte Along the sides of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC2120  Avena barbata H. Silberman 1949-9-17 Butte N. side Golf Course, Chico. 76 Comment
  SEINET7297380 Image available Avena barbata A. A. Heller 1914-1 11207 Butte Moist places along a small stream eight miles north of Oroville, near the western base of Table mountain. Comment
  CHSC2826  Avena fatua David Prall 1965-3-14 14 Butte At roadside of Neal Rd. 1 mile East of HW. 99E. 106 Comment
  CHSC4363  Avena fatua V. Hagaman 1966-4-25 Butte On CSC Campus. Comment
  CHSC4416  Avena fatua J. Francis 1966-5-9 Butte Vacant lot at intersection of Arcadian and Mansion Ave., Chico. Comment
  CHSC116268  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte 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
  JEPS102437  Azolla filiculoides Lowell Ahart 2011-1-26 8718 Butte On the east side of the parking lot, on the north side of Rutherford Road, about 1/4 mile west of Pennington Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  SEINET10839518  Azolla filiculoides Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4850 Butte On shallow water in the ditch south of Highway 70, at the intersection of Highway 70 and 191. Comment
  CHSC103171  Azolla microphylla Lowell Ahart 2009-11-19 16558 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northest of Chico. 242 Comment
  CHSC34140  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Ca. 3/4 mi NE of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 1/8 mi S of the ORO Bangor Hwy, ca. 5 mi NE of Palermo. 100 Comment
  CAS-BOT-BC98007  Baccharis pilularis Lowell Ahart 1985-2-17 4838 Butte near Kunkle Res., about 2 miles south of Paradise 550 Comment
  UCD129435  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte Gray Lodge, south-west of Gridley. 35 Comment
  CAS-BOT-BC98183  Baccharis salicifolia John Thomas Howell 1973-7-9 49687 Butte West Branch Feather River on Feather River Highway - Sierra Nevada 304 Comment
  UC57396  Baccharis salicifolia subsp. salicifolia H. E. Brown 1896-10-2 120 Butte near Oroville 53 Comment
  RSA758602  Bacopa repens Peter Fritsch, Boni Cruz 2005-8-9 1788 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 Comment
  POM180885  Bacopa rotundifolia H. F. Copeland 1923-7-9 843 Butte Nelson. Comment
  SEINET10839234  Balsamorhiza sagittata Mary Susan Taylor 1978-7-19 Taylor 1770 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC48314  Barbarea orthoceras Vernon Oswald 1984-5-9 1180 Butte Near Camp Lassen, Chico Meadows on Scout Rd ca. 1 mi n of Butte Meadows. 1292 Comment
  UC397039  Barbarea orthoceras E. Copeland 1929-7-14 Butte near Jonesville 1600 Comment
  UCD95091  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte One half mile west of Harrison and Stern Roads in town of Paradise. 609 Comment
  CHSC5962  Berberis thunbergii M. MacArthur 1968-6-17 178 Butte Location: ca. 10 ft. NW of Auditorium SW entrance, Chico State College campus. 60 Comment
  CHSC28459  Bergia texana R. A. Schlising 1979-10-14 3507 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC94387  Bergia texana Lowell 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. 30 Comment
  RSA0036436  Betula Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, on the north side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  HSC103997  Bidens frondosa L. Ahart 2013-11-17 19259 Butte About 5/8 mi. SW of the Enterprise Bridge across Lake Oroville, below the high water line of Lake Oroville, along the sides of McCabe Creek 245 Comment
  CHSC3919  Blennosperma nanum Wayne O. Baum 1967-3-17 12 Butte In triangle area on E side of Cohasset Rd. and ca.3.2 mi N of Chico. 60 Comment
  CHSC56748  Blennosperma nanum J. D. Jokerst 1980-3-28 Butte West of Hwy 99, north of its junction with Gage-Shippee Road. Comment
  UCD114301  Boechera arcuata Robert E. Preston 1985-4-4 510 Butte ca. 0.5 mi SW of Mayaro. 585 Comment
  CHSC28766  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 248 Butte On cliffs composing the S.E. bank of Little Chico Cr. 198 Comment
  JEPS122214  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UCD114350  Boechera breweri subsp. shastaensis R. E. Preston 1982-4-7 235 B Butte S facing cliffs of Cape Horn; ca. 4.5 mi SE of Paradise. 335 Comment
  CHSC25323  Boechera platysperma M. Hayes; M. S. Taylor, R. Schlising 1977-8-17 42 Butte Collected at the very ne corner of Butte County, less than 1/2 mi west of Humboldt Peak, 150 ft from the county line in a meadow. 2026 Comment
  CHSC33633  Boechera platysperma R. E. Preston; R. A. Schlising, R. Banchero, D. Burk 1981-7-21 112 Butte N ridge of Snow Mtn, ca. 7.2 km se of Jonesville. 2050 Comment
  SEINET10453129  Boisduvalia densiflora Mary Susan Taylor 1975-6-30 Taylor 817 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 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
  CHSC31683  Bolboschoenus glaucus L. Ahart 1972-6-20 113 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC955483  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-25 9780 Butte Jonesville 1554 Comment
  SEINET10483071  Boykinia elata Lowell Ahart 1985-6-30 Ahart 5075 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC69114  Boykinia major Lowell Ahart 1997-8-1 7796 Butte At the bottom of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  CAS-BOT-BC145681  Brachypodium distachyon John Thomas Howell 1959-9-20 34691 Butte Sierra Nevada. 7 miles northeast of Oroville on Feather River Highway. 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
  CHSC38412  Brassica rapa Vernon Oswald 1983-2-16 82 Butte Upper Bidwell Park, Chico, 50 ft s of Upper Park Rd. near Bare Hole (1.0 mi e of the power lines). 121 Comment
  SEINET10971165  Brickellia californica Mary Susan Taylor 1979-9-28 Taylor 2197 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  JEPS117274  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  CHSC41138  Briza minor R. L. Ondricek-Fallscheer 1982-5-25 134 Butte On ne side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC90998  Briza minor Lowell Ahart 2005-4-14 11710 A Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD57391  Briza minor Joseph M. DiTomaso 1976-5-23 469 Butte Lake Oroville. Peninsula at south end. Comment
  SEINET10896168  Brodiaea Carl B. Wolf 1937-6-12 Wolfe 2849 Butte Sierra Nevada Foothills, 2 1/2 miles SE of Oroville on road to Wyandotte. 300 feet. Upper Sonoran:-Quercus douglas & P. sabiniana. Red clay, dry open slopes, sun. Comment
  CHSC2069  Brodiaea californica N. Maxwell 1929-5-9 Butte Rock Creek, Shasta rd. 56 Comment
  SEINET3884842  Brodiaea coronaria Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -8 Butte Magalia, near Skyline road to Paradise.; 0 168 Comment
  SD111966  Brodiaea minor Barbara Ertter, Lowell Ahart, Jeffrey Strachan 1980-5-6 3270 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville. Dried vernal pool previously plowed as grainfield, now reverted, very rocky. 29 Comment
  SEINET7072748  Brodiaea minor A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 99, then south on Shippee Road. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 612709mE, 4380037mN. Coordinate datum: NAD 27.) Comment
  CAS-BOT-BC484562  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills 304 Comment
  RSA113236  Brodiaea nana E. K. Balls, Lee W. Lenz 1955-5-13 20483 Butte 3.4 miles E. of turn-off U.S. Hwy. 99 to Oroville. 61 Comment
  CHSC71461  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte On the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 54 Comment
  UCD139163  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte on the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut about 12 miles southeast of Oroville. 54 Comment
  SEINET10932607  Brodiaea volubilis H. E. Brown 1897-5-1 Brown s.n. 1897 Butte Collected near Clear Creek. 175 feet alt. Comment
  UCD58295  Bromus carinatus var. californicus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC88147  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CHSC2128  Bromus catharticus H. Silberman; D. Isaac 1949-5-9 Butte W. side football field, CSU campus. Comment
  CHSC90832  Bromus catharticus Lowell Ahart 2005-5-2 11767 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
  JEPS103569  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC42848  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC56624  Bromus diandrus T. B. Devine 1980-3-10 605 Butte Chico Sewage Treatment Plant. Comment
  RSA715574  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley. At the base of the railroad, east side of the railroad tracks, south of the railroad bridge, north of Spruce street. 28 Comment
  RSA755045  Bromus diandrus L. Ahart 2009-4-26 15611 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  SEINET6778879  Bromus diandrus M. Maynarel 1975-5-15 Butte Chico, Abandoned field Comment
  CHSC2132  Bromus hordeaceus H. Silberman; D. Isaac 1949-5-9 Butte W side of football field, CSC campus. Comment
  CHSC31946  Bromus hordeaceus J. D. Jokerst 1979-4-20 1211 Butte Top of North Table Mt., ca. .75 mi N of Cherokee Rd. 396 Comment
  JEPS116101  Bromus hordeaceus Lowell Ahart 2009-5-8 15668 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS117561  Bromus hordeaceus Lowell Ahart 2010-6-20 16816 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 64 Comment
  UC1131072  Bromus hordeaceus C. G. Albertus 1933-6-6 20 Butte 1/4 mi w of Pentz 137 Comment
  UCD58624  Bromus hordeaceus L. Y. Leonard 1919-6-16 X 3100 Butte Chico. U.S. Test Grounds. Comment
  CHSC102173  Bromus laevipes Lowell Ahart 2009-5-30 15804 Butte On dry rocky soil, on the north side of Ten Mile House Road, just southeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway32 and Ten Mile House Road, about 10 miles northeast of Chico. 425 Comment
  UCD80526  Bromus laevipes CNPS SN Foothill Team 2005-5-4 Survey Butte Bidwell Park. Comment
  SEINET10507835  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10935012  Bromus laevipes Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4058 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC101292  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC101324  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CDA35634  Bromus madritensis subsp. rubens J. R. Keck Jr. 1981-5-13 PDR# 237679 Butte Oroville. 0 Comment
  CAS-BOT-BC162201  Bromus orcuttianus L. P. Janeway 1995-7-27 4877 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca. 0.6 mile east of the western end of the ridge. 1143 Comment
  CHSC96857  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CAS-BOT-BC161964  Bromus rubens Lowell Ahart 1987-5-6 5553 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  SEINET4404362  Bromus rubens J. Nachlinger 1984-4-8 922 Butte Table Mountain 4 miles N of Oroville 366 Comment
  CDA31949  Bromus sterilis L. Ahart 2009-4-26 15614 Butte East edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CHSC49524  Bromus tectorum Vernon Oswald 1984-5-21 1196 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. On the abandoned railroad 0.5 mi s of the Little West Fork of the West Branch of the Feather River. 853 Comment
  JEPS118487  Bulbostylis capillaris Lowell Ahart 2011-7-9 17564 Butte Area of almost bare rock, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 1009 Comment
  CAS-BOT-BC185473  Calamagrostis canadensis Lowell Ahart 1987-10-17 5917 Butte Along the East Fork of the Last Chance Creek, about 0.5 mile northwest of Jones Meadow. 1676 Comment
  CHSC59041  Calamagrostis canadensis Lowell Ahart 1992-7-26 6848 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC25120  Calandrinia ciliata var. menziesii G. G. Poulsen Jr. 1971-4-13 9 Butte Ca 2 mi n. of Oregon City turn off on Cherokee Rd. Grows in clusters in open fields and in shaded areas. 426 Comment
  SEINET4169758  Calliprora scabra A. A. Heller 1938-4-23 15047 Butte Between the Las Plumas road and Jarboe Pass on the Feather River Highway. Transition Life Zone 610 Comment
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC30881  Callitriche marginata J. D. Jokerst 1979-4-2 1166 Butte Top of North Table Mt, ca 200 m S of the intersection of Cherokee Rd and the E edge of section. 396 Comment
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  CHSC4675  Calochortus albus R. Carter 1966-4-30 385 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  UC203864  Calochortus albus A. A. Heller 1914-5-8 11375 Butte above Clear Creek (on the Paradise road) Comment
  CAS-BOT-BC487506  Calochortus albus Orrel Ballantyne 1986-4-11 s.n. Butte Near Cherokee. About 2 mi. South of Oregon School Comment
  CAS-BOT-BC489921  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CHSC24840  Calochortus luteus J. T. Moore 1976-4-28 18 Butte 5 m n of Skyway road to Paradise, 8 km e of Hwy 99. 210 Comment
  UCD139538  Calochortus luteus L. Ahart 1979-5-12 1875 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33571  Calochortus monophyllus M. S. Taylor 1981-4-27 3558 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
  CHSC82634  Calochortus monophyllus Tara Morgan 2002-4-23 35 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail. On the side of the trail. 414 Comment
  CHSC84919  Calochortus monophyllus Janice Morris 1995-4-24 91 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  UC725774  Calochortus monophyllus A. A. Heller 1939-4-10 15372 Butte Comment
  CAS-BOT-BC492598  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte Near Hurleton. Comment
  CHSC25014  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville. 1550 Comment
  UC119870  Calochortus nudus Mrs. R. M. Austin Jul 1896 22 Butte Colby Comment
  RSA369111  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CHSC24426  Calycadenia multiglandulosa Lowell Ahart 1976-9-18 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC97005  Calycadenia multiglandulosa B. Castro; L. P. Janeway 2005-6-5 1481 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  CAS-BOT-BC106125  Calycadenia oppositifolia David D. Keck 1930-7-25 975 Butte Hurleton, ten miles east of Oroville, on Forbestown Road, eastern Butte County. 487 Comment
  UCD129785  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mile west of Paradise. South side of Chico-Paradise Hwy. Comment
  RSA795696  Calycadenia spicata L. Ahart 2012-8-22 18420 Butte Old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 0.25 miles east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CDA10581  Calycadenia truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada; On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Comment
  CHSC39328  Calycadenia truncata Lowell Ahart 1983-6-26 4153 Butte Along the edge of Ponderosa Way, about 1 1/2 miles southeast of the East Fork of Canyon Creek, about 14 1/2 miles northeast of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  UC1971768  Calycadenia truncata R. L. Carr 1986-10-3 2268 Butte 6.6 mi NE of Chico on Hwy 32 (from Hwy 99 jct), very near milepost 17.00 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
  SEINET12096302  Calycanthus occidentalis M. S. Taylor, Oswald, V. 1985-1 5509 Butte Along Four Trees Road between Hwy 70 and Coyote Gap, ca 25 air mi NE of Oroville Comment
  CHSC37266  Calyptridium umbellatum L. Ahart 1982-6-15 3559 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC32307  Calystegia atriplicifolia subsp. buttensis John Thomas Howell 1955-6-14 30471 Butte De Sabla 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
  CAS-BOT-BC221235  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 39 Butte Jonesville 1219 Comment
  UC478483  Calystegia occidentalis var. tomentella E. B. Copeland 1931-7-4 674 Butte Jonesville 1550 Comment
  UC454113  Campanula prenanthoides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10462927  Campanula prenanthoides Conger 1907-1 CONGER s.n. Butte BRUSH CREEK Comment
  SEINET10840318  Campanula prenanthoides Taylor 1978-7-18 Taylor 1673 Butte On west side of Highway 32 on edge of Yellow Pine Forest, in dry open area, about 0.25 mile north of Forest Ranch 718 Comment
  JEPS107339  Capsella bursa-pastoris Lowell Ahart 2005-4-2 11683 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
  JEPS122272  Capsella bursa-pastoris Lowell Ahart 2014-4-9 19326 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  RSA715889  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 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
  CHSC3653  Cardamine californica Robert D. Briggs 1966-3-16 R- 72 Butte 8 miles due north of Downtown Chico. Comment
  UC1609151  Cardamine californica Vernon H. Oswald and Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmille Peak (Lookout ene of Magalia); Lookout, ene of Magalia 701 Comment
  CAS-BOT-BC37877  Cardamine oligosperma A. A. Heller 1914-4-14 11290 Butte Hills 8 miles north of Oroville. In a grain field 8 miles north of Oroville. Comment
  JEPS116041  Cardamine oligosperma Lowell Ahart, John Dittes 2009-3-20 15505 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CHSC34522  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-2-28 45 Butte Ca. 50 m e of Coutelenc Rd, ca. 320 m n of its jct with the Skyway, Magalia. 700 Comment
  CHSC103975  Carduus pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  JEPS127001  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte About 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC18213  Carex Lowell Ahart s.n. Butte Honcut. Peter Ahart Ranch. Comment
  RSA0119329  Carex abrupta Lowell A. Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC100884  Carex amplifolia L. P. Janeway; Linus Gog 2008-7-19 9439 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
  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
  CHSC53716  Carex angustata L. P. Janeway 1987-7-4 2417 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  UCD140104  Carex angustata Robert E. Preston 1982-7-16 338 Butte Crane Valley, on streambank. 1584 Comment
  CHSC40662  Carex athrostachya J. D. Jokerst; R. A. Schlising 1982-10-7 1654 Butte Easternmost pond on the bench along the s edge of Coon Hollow. 1706 Comment
  CHSC45146  Carex athrostachya Lowell Ahart 1981-8-15 3044 Butte On the drying bottom of Snag Lake, about 10 miles north of Inskip. 1737 Comment
  CAS-BOT-BC19108  Carex aurea Lowell Ahart 1981-8-15 3046 Butte Southeas of Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC19419  Carex bolanderi Lowell Ahart 1988-7-31 6146 Butte About 4 road miles north of Stirling City. On the east side of the West Branch of the Feather River. 914 Comment
  CHSC106513  Carex bolanderi Peter F. Zika 2009-6-17 24512 Butte Cascade Range Highlands (CaRH). E side of Concow Road near Clear Creek Ranch, 5 road miles N of Route 70. 620 Comment
  SEINET3143631  Carex bolanderi L. S. Rose 1939-6-7 39253 Butte 3 mi N of Pulga, Feather River Canyon 518 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  JEPS116653  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Campus of California State University, Chico Chico (between Merriam Library, the new student services building,and Warner Ave.); Sacramento Valley 59 Comment
  UCD140240  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte South side of Butte Creek 1/2 mile west of Cherry Hill. 1402 Comment
  CHSC86104  Carex densa L. P. Janeway; John Hunt 2003-4-22 7760 Butte Northern Sierra Nevada Foothills. 274 m west of Lake Oroville and Bloomer Cove Campground; 5.3 km southwest of Bloomer Hill. 302 Comment
  RSA0045627  Carex divulsa Lowell A. Ahart 2012-5-25 18113 Butte Nnorthwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. 59 Comment
  SEINET10650517  Carex feta Lawrence P. Janeway 1988-6-14 Janeway 2765 Butte T24N, R3E. Cohasset quad. NE1/4 of sec. 3. NW side of canyon of W Br Butte Cr, 1.1 mi E of Hwy 32 along road to Ewalt Camp. Seep and ditch along dirt road in mixed conifer forest. With C. bolanderi. 945 Comment
  JEPS110318  Carex fracta Lowell Ahart 2006-7-25 13068 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC532225  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville 1524 Comment
  RSA754885  Carex gracilior L. Ahart 2009-6-18 15911 Butte 60 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  CHSC83936  Carex hirtissima L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7758 Butte Northern Sierra Nevada Foothills. Near west edge of Lake Oroville/North Fork Feather River 6.8 km north of the Spillway Boat Ramp. Meadow. 280 Comment
  RSA0116106  Carex hirtissima Lowell A. Ahart 2014-7-13 19642 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  CHSC99381  Carex infirminervia Robert F. C. Naczi; Lawrence P. Janeway 2006-7-23 10516 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  CHSC46462  Carex integra V. Oswald; L. Ahart 1989-6-27 3831 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  SEINET10842200  Carex inversa Peter F. Zika 2010-5-16 Zika 24827 Butte Ahart's Station, Sacramento Valley (ScV), Oroville, Baldwin Avenue near Spencer Avenue. 65 Comment
  CHSC52916  Carex jonesii L. P. Janeway 1988-7-2 2945 Butte Marsh-meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  HSC96351  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte SE side of Humbug Summit Rd., at the Cornelia Lott Sank Memorial Spring 1519 Comment
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  HSC86882  Carex lemmonii L. P. Janeway 1987-6-26 2289 Butte Rag Dump 1174 Comment
  JEPS120811  Carex lemmonii Lowell Ahart 2013-5-27 18712 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
  JEPS94302  Carex lemmonii Lowell Ahart 1997-8-1 7777 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  UCR66603  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 457 Comment
  RSA774128  Carex luzulina var. ablata L. Ahart 2010-9-21 17219 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC52358  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-22 3053 Butte Coon Hollow side of the saddle between Coon Hollow and Chips Creek. 1920 Comment
  JEPS116089  Carex multicaulis Lowell Ahart 2009-5-15 15709 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
  CHSC49391  Carex multicostata L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2993 Butte At Crane Valley (upper Big Kimshew Cr). 1569 Comment
  CHSC51511  Carex nebrascensis L. P. Janeway 1987-5-10 2044 Butte Meadow at junction of Skyway and Doe Mill/Humbug Road (just N of DeSabla Reservoir). 838 Comment
  CHSC52246  Carex nudata L. P. Janeway; Vern Oswald 1989-4-17 3224 Butte Along ditch just southeast of Butte Creek, ca 1/4 mi northeast of Hwy 99. 67 Comment
  CHSC61220  Carex nudata Lowell Ahart 1993-4-8 6931 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  CHSC105506  Carex pachycarpa Lowell Ahart 2010-9-21 17201 Butte Under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC52232  Carex pachystachya L. P. Janeway 1987-6-20 2254 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Road. 975 Comment
  SEINET4231788  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  CHSC102178  Carex praegracilis Lowell Ahart 2009-5-30 15789 Butte On dry soil, forming large dense colonies, meadow, about 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CAS-BOT-BC117390  Carex senta A. S. Crafts s.n. Butte On Ponderosa Way, Yankee Hill. 914 Comment
  UCD140909  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. 1500 Comment
  UCD141166  Carex subfusca L. P. Janeway 1986-8-31 1809 Butte along edge of Philbrook Road 2 miles west of Philbrook Dam. 1569 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 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
  CHSC6052  Castanea dentata M. MacArthur 1968-6-22 285 Butte Ca. 20 ft. SE of Bld. D along So-Will-lin-no st., Chico State College. 60 Comment
  CHSC111969  Castilleja affinis subsp. affinis Lowell Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC115356  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19962 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
  JEPS3015  Castilleja affinis subsp. affinis Barbara Gail Paulson 1952-4-11 3 Butte near Cherokee 365 Comment
  CAS-BOT-BC249590  Castilleja applegatei subsp. pinetorum John Thomas Howell 1962-6-15 37501 Butte Magalia 731 Comment
  CHSC109577  Castilleja applegatei subsp. pinetorum L. P. Janeway 2012-6-23 10887 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC1697  Castilleja applegatei subsp. pinetorum M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC34082  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-7-19 3957 Butte N side of Feather River Hwy 70m at nw end of Pulga bridge and along Pulga rd ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  JEPS57368  Castilleja applegatei subsp. pinetorum L. R. Heckard 1968-5-31 1930 Butte 2.8 mi s Cohasset Road (along Ponderosa Way, ne of Chico) 670 Comment
  JEPS8021  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Lawrence R. Heckard 1951-8-7 3475 Butte 0.3 mi w Jonesville (at crossing of Butte Creek on road from Butte Meadows); Butte Creek 1524 Comment
  UCD73007  Castilleja attenuata Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  OBI9383  Castilleja attenuata Lewis S. Rose 1967-5-6 67055 Butte Oroville 52 Comment
  UCD122348  Castilleja campestris R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W. of Oroville. Comment
  CHSC24845  Castilleja exserta T. L. Reynolds 1976-4-25 67 Butte Ca. 20 yds ne of Manzanita Ave and ca. 200 yds se of Chico Creek, .3 mi se of Hooker Oak. 59 Comment
  CHSC91456  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  SEINET12291098  Castilleja linariifolia Unknown 5 s.n. Butte no further locality Comment
  CHSC11901  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  CHSC31932  Castilleja miniata J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1043 Butte Immediately N of and adjacent to the summit of Humbolt Peak, northernmost portion of Butte Co. 2133 Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  POM196018  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville. 1550 Comment
  RSA181783  Ceanothus cordulatus H. F. Copeland 1927-9-2 232 Butte [Unspecified] Comment
  LA42059  Ceanothus cuneatus Carl B. Wolf; 1937-3-29 8338 Butte 7 8/10 mi. below Paradise on Chico Road 152 Comment
  CHSC23697  Ceanothus integerrimus M. S. Taylor 1976-5-5 1107 Butte Abundant ca. 15 ft n of Hwy 70, at Jarbo Gap, ca. 15 mi ne of Oroville. Comment
  SD7267  Ceanothus integerrimus Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  UC398933  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  SEINET5339315  Ceanothus integerrimus M. J. Williams, W. Roderick 1984-5-25 84- 22 -3 Butte Magalia, near Skyline road to Paradise. 168 Comment
  CHSC55404  Ceanothus integerrimus var. macrothyrsus C. G. Morris 1991-4-18 14 Butte Collected 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  LA44872  Ceanothus lemmonii Lewis S. Rose; 1937-6-10 37377 Butte Forbestown 838 Comment
  UC870592  Ceanothus lemmonii Lewis S. Rose 1937-6-10 37377 Butte Forbestown 838 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  CHSC44132  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 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
  CHSC100800  Ceanothus velutinus R. A. Schlising; L. Janeway 1988-7-1 4547 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CAS-BOT-BC52420  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CHSC6012  Cedrus deodara M. MacArthur 1968-6-19 252 Butte Lawn in front of CAC and next to NE end of Library bld., Chico State College. 60 Comment
  CHSC62507  Celtis sinensis B. Castro 1990-10-11 436 Butte Midway between Chico, Paradise, and Oroville, ca. 0.3 mi N of 'Pentz', N of jcn Pentz and Messilla Valley Roads. Occasional tree on E edge of Dry Creek. Three other similar trees by house ca 200 yds upstream. 121 Comment
  CAS-BOT-BC282003  Centaurea calcitrapa W. Gilbert; R. Dodd 1970-7-22 s.n. Butte Highway 32 to Lake Almanor, NE of Forest Ranch, 19.5 miles NE of Chico Comment
  CHSC35752  Centaurea melitensis R. E. Preston 1982-6-2 292 Butte Ca. 0.7 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 365 Comment
  JEPS115574  Centaurea melitensis Lowell Ahart 2009-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC196282  Centaurea melitensis A. A. Heller 1914-7-13 1753 Butte 10 mi e of Oroville (Mt. Ida ranch) Comment
  UCD130034  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  CHSC296  Centaurea solstitialis R. M. Staley 1952-7-15 Butte Paradise. Comment
  CHSC6173  Centaurea solstitialis J. Wheeler 1968-5-17 371 Butte East of intersection of Broadway and First Street, Chico. 59 Comment
  SEINET11839287  Centaurea solstitialis Unknown 1969-1 98 Butte 0.5 mi N of Chico Municipal Airport on Cohasset Road Comment
  JEPS94760  Centaurium venustum Lowell Ahart 1998-6-3 7969 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS98615  Centaurium venustum Lowell Ahart 2000-6-27 8509 Butte Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC28807  Centromadia fitchii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 411 Butte Top of north Table Mt, 100 m N of Cherokee Rd. 396 Comment
  JEPS13270  Centromadia fitchii Rimo Bacigalupi with G. T. Robbins 1955-7-15 5301 Butte 3.5 mi e Chico (one-half mi s of the Hooker Oak) 80 Comment
  CHSC66662  Centromadia parryi subsp. rudis Vernon H. Oswald; Lowell Ahart 1996-7-22 8096 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 public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Sanctuary II. 33 Comment
  JEPS106000  Centunculus minimus Lowell Ahart 2004-4-4 10716 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  UC120354  Cerastium glomeratum Mrs. R. M. Austin Apr 1899 105 Butte Butte Creek Comment
  UC203620  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte low hills 8 mi. n. Oroville Comment
  CAS-BOT-BC388259  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC388263  Cerastium glomeratum Lowell Ahart 1987-5-12 5625 Butte South of the dirt road, 1 1/2 miles east of Camp 18, south of Lumpkin Ridge Road, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC388266  Cerastium glomeratum Lowell Ahart 1980-5-4 2181 Butte Thermalito 65 Comment
  UC956837  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  UC15107  Cercis occidentalis unknown 380 Butte Chico Comment
  UCR190822  Cercis occidentalis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  UCSB63611  Cercis occidentalis Hardin, Mary 1986-4-18 Butte Ca. 0.5 mi. ESE of Cohasset Hwy.; 9 mi. NNE of Chico 548 Comment
  CHSC20042  Cercocarpus betuloides var. betuloides M. S. Taylor 1975-4-25 499 Butte Ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  CHSC38641  Cercocarpus betuloides var. betuloides Vernon Oswald 1983-3-13 154 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  HSC66093  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz Vernal Pool, 0.4 mi. SE of Jct. Pentz Rd. and Hwy. 99, about 10 mi. S of Chico 55 Comment
  CHSC102522  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 41 Comment
  CHSC61314  Chamaesyce maculata Lowell Ahart 1993-7-22 7080 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS103448  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS95154  Chamaesyce maculata Lowell Ahart 1997-10-24 7941 Butte about 20 yards n of South Fork of the Feather River (on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderosa Dam); e side of Sucker Creek 274 Comment
  JEPS95159  Chamaesyce maculata Lowell Ahart 1997-10-24 7941 Butte about 20 yards n of South Fork of the Feather River (on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderosa Dam); e side of Sucker Creek 274 Comment
  CHSC45277  Chamaesyce nutans Vernon Oswald 1988-10-29 3721 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 Comment
  CHSC23374  Chamaesyce ocellata Robert Schlising 1974-10-30 3160 Butte Chico; Bidwell Park aarea above golf course and rifle range. Comment
  CHSC29718  Chamaesyce ocellata J. D. Jokerst; T. B. Devine, D. Greemstein 1979-9-13 430 Butte Top of North Table Mt, 100 m north of jct of east edge of Mt and Cherokee Rd. Comment
  CHSC75965  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8161 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
  CAS-BOT-BC69475  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area, ca 1/2 mi. se. of Parish Camp, just s. of Lime Saddle memorial park, ca. 5 mi. s. 304 Comment
  CHSC25279  Cheilanthes cooperae K. R. Stern 1977-1-15 Butte Along branch of Feather River, n of Limesaddle. Comment
  CAS-BOT-BC69441  Cheilanthes gracillima M. S. Taylor; L. Ahart; J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of N. Table Mt., ca. 8 mi. n. of Oroville. 373 Comment
  CHSC44088  Cheilanthes gracillima L. P. Janeway 1987-7-5 2465 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  CHSC44612  Cheilanthes gracillima Vernon Oswald 1985-4-29 1733 Butte Big Bald Rock. Comment
  JEPS95989  Chenopodium album Lowell Ahart 1999-10-28 8312 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
  CDA3047  Chenopodium botrys L. Ahart 2006-9-11 13282 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  CDA3074  Chenopodium missouriense J. T. Howell 1961-9-22 36788 Butte North Fork of Feather River northeast of Pulga. 0 Comment
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  UC179653  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte hills 8 mi n Oroville Comment
  CHSC34775  Chenopodium strictum var. glaucophyllum L. Ahart 1981-11-6 3230 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. 35 Comment
  CHSC61974  Chenopodium strictum var. glaucophyllum Vernon H. Oswald 1993-10-19 5955 Butte N side of West East Ave., Chico, between Cussick and Alamo avenues. 51 Comment
  CHSC38877  Chlorogalum pomeridianum var. pomeridianum Vernon Oswald 1983-6-20 726 Butte Upper Bidwell park, Chico, along Yahi Trail e of Brown's Hole. 198 Comment
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC29834  Chorizanthe polygonoides var. polygonoides M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2756 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC46278  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1989-4-14 3734 Butte Wurlitzer Unit, Vina Plains Preserve. Near the northeast gate on Haille Rd. 57 Comment
  CHSC94048  Chorizanthe polygonoides var. polygonoides R. D. Fischer 2005-5-18 722 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail. 426 Comment
  CHSC97362  Chorizanthe polygonoides var. polygonoides Paul Maslin 2005-5-1 58 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  JEPS119999  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  CHSC21786  Chorizanthe stellulata Robert A. Schlising 1974-5-25 3133 Butte 9.9 mi NE jct Hwy 99 and Hwy 32 in Chico, along Hwy 32. Comment
  SD8111  Chorizanthe stellulata Dr. C. C. Parry May 1882 Butte Chico Comment
  JEPS115351  Cichorium intybus Lowell Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 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
  UCD130484  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Chico. Comment
  CHSC55308  Cinna latifolia Lowell Ahart 1991-8-25 6708 Butte Along Haphazard Creek, about 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Brush Creek. 1219 Comment
  CHSC8564  Cinnamomum camphora M. MacArthur 1968-6-23 289 Butte Ca. 20 ft. SE Big Chico Creek, just south of PSA bridge, Chico State College. 60 Comment
  UC177595  Cirsium douglasii var. breweri H. M. Hall 1914-7-30 9816 Butte n Butte County Sierra Nevada Mountains 1524 Comment
  CHSC46449  Cirsium scariosum V. Oswald; L. Ahart 1989-6-27 3828 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along Butte Creek. 1767 Comment
  JEPS115722  Cirsium vulgare Lowell Ahart 2009-8-3 16262 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
  CAS-BOT-BC285724  Cirsium vulgare Lowell Ahart 1982-8-10 3739 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 50 Comment
  POM180913  Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  SEINET5506122 Image available Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  CAS-BOT-BC228750  Cistanthe umbellata A. A. Heller 1913-6-7 10804 Butte Near Stirling 1074 Comment
  CAS-BOT-BC163545  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte On the stony slope back of the Salmon Hole 152 Comment
  CAS-BOT-BC163578  Clarkia biloba subsp. biloba Mrs. H. C. Cantelow 1940-5-10 4033 Butte 7 mi. E. of Oroville. Old rd. to Bucks Lake Comment
  CAS-BOT-BC172395  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, near teh Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC27035  Clarkia biloba subsp. brandegeeae Robert A. Schlising 1978-6-25 3293 Butte E of Oroville, 3.4 mi below L. Wyandotte near L. Oroville. Comment
  CHSC4608  Clarkia biloba subsp. brandegeeae R. Carter 1966-6-12 424 Butte Found ca. 7 mi. E of Oroville, 200 yds. S of intersection of Olive Hwy. and Oro-Quincy Hwy. on E side of Olive Hwy., on a road bank above road. 304 Comment
  CHSC42366  Clarkia concinna subsp. concinna Lowell Ahart 1987-5-9 5602 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  RSA699539  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-4-17 170 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on edge of 10 Mile House Road at roads closest point to Big Chico Creek. 216 Comment
  CHSC48628  Clarkia mildrediae subsp. mildrediae Vernon Oswald 1984-7-9 1354 Butte Near falls on Bear Ranch Creek s-e of Hwy 70 at Cresta Rest Area. 512 Comment
  CHSC82697  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. Burned area. 655 Comment
  CHSC89907  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-10 Butte Northern Sierra Nevada Foothills. On the northeast side of Ponderosa Reservoir, extending from the boat launch, along the road leading down to Ponderosa Reservoir, and up the road leading over to the Forbestown Powerhouse. 304 Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC35145  Clarkia purpurea subsp. quadrivulnera R. Schlising; R. Banchero 1980-6-19 3748 Butte S of Concow along Concow Road, 0.1 mi S of junction with Jordan Hill Road. Roadside. 524 Comment
  JEPS43553  Clarkia purpurea subsp. quadrivulnera W. L. Jepson 1934-5-4 16619 Butte 2 1/2 mi ne Cana Comment
  CAS-BOT-BC172379  Clarkia purpurea subsp. viminea L. P. Janeway 1993-6-23 4400 Butte North side of French Creek, 0.5 mi west of mouth of Ram Creek, north side of Rd. 22N34, Plumas National Forest, Oroville Ranger District, Swayne Hill Compartment (non-Forest land) 615 Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  CAS-BOT-BC164787  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC26849  Clarkia rhomboidea M. S. Taylor; M. Hayes 1978-6-24 1642 Butte On n side of Old Humboldt Rd at jct of Butte Creek and Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC64118  Clarkia rhomboidea L. P. Janeway; Jean Hubbel, Dave Wood 1994-6-3 4655 Butte Forest Ranch; 0.5 mi east of Hwy 32 on Nopel Avenue and Cody Lane. Along side of dirt road. 725 Comment
  CHSC70743  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  SEINET3260809 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  UCD104987  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  CHSC46494  Clarkia unguiculata Lowell Ahart 1989-5-31 6333 Butte On the west side of a small stream, 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-BC439429  Claytonia parviflora subsp. parviflora A. A. Heller 1919-4-12 13100 Butte Cherokee Mine Comment
  CHSC87421  Claytonia parviflora subsp. parviflora R. D. Fischer 2004-3-15 111 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
  RSA715884  Claytonia parviflora subsp. parviflora Paul Maslin, John Dittes 2005-3-17 11651 Butte About 1/8 mi. northwest of the Indian Cave, about 3/4 mi. west of Big Chico Creek, about 4.5 mi. (air) northeast of Chico. Common. 482 Comment
  RSA325089  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-5 3493 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  JEPS119552  Claytonia perfoliata subsp. intermontana Lowell Ahart 2012-2-22 17743 Butte About 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC443705  Claytonia rubra Lowell Ahart 1987-5-6 5534 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC24136  Claytonia rubra subsp. rubra D. E. Hale 1976-4-4 3 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-- Vilas Rd intersection, 24 km ne of Chico. 835 Comment
  CHSC1438  Clematis lasiantha J. Koopman 1929-4-18 Butte Honey Run canyon. 396 Comment
  CHSC24890  Clematis lasiantha P. Laherty 1976-4-4 18 Butte Ca. 2 ft n of Ponderosa Way, ca. 4.5 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 441 Comment
  CHSC42491  Clematis lasiantha Lowell Ahart 1987-5-9 5587 Butte Near a wash, along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  UC1876148  Clematis lasiantha T. A. Ranker and P. G. Trapp 1994-6-17 1613 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  CHSC46087  Collinsia sparsiflora var. collina Lowell Ahart 1989-3-25 6198 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 miles north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  JEPS119840  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC79826  Collinsia tinctoria G. F. Hrusa; T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest. At E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. [Lat./Long. on label is '39 45 N; 121 17 W']. 1100 Comment
  JEPS6368  Collinsia tinctoria Rimo Bacigalupi & Richard Hauke 1954-7-15 4700 Butte 0.5 mi s and below Nimshew (along flank of Butte Canyon, on the Humbug (Nimshew) rd); Butte Canyon 701 Comment
  UC1012166  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25680 Butte 2 mi up along Feather River above Oroville (Route 24); Feather River, Route 24 609 Comment
  SEINET10496933  Collomia grandiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4747 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  SEINET12331811  Collomia grandiflora L. Ahart, Ahart, P. 1984-1 4747 Butte ca 1.5 m SE of Bald Mountain, 3/4 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC34995  Collomia heterophylla R. A. Schlising 1980-6-2 3620 Butte Along Highway 32, 10.3 mi N of jct with Forest Ranch Road in village of Forest Ranch; at roadside. Comment
  CHSC45347  Collomia heterophylla Vernon Oswald 1987-3-31 2304 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. On a sand bar along the creek. 85 Comment
  CHSC58936  Collomia linearis Lowell Ahart 1992-7-21 6819 Butte In meadows, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS87193  Collomia linearis Lowell Ahart 1992-7-21 6819 Butte about 2 (air) mi ne Philbrook Reservoir (s side of hollow nw of a snow lake, on s side of Coon Hollow); Coon Hollow 1737 Comment
  RSA719876  Collomia linearis Michael A. Vincent, K. Levings 2006-7-29 12899 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  CHSC35963  Convolvulus arvensis M. S. Taylor 1982-5-22 4499 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  UC879373  Convolvulus arvensis A. A. Heller 1916-9-9 12657 Butte near Durham Comment
  CHSC40475  Conyza floribunda Lowell Ahart 1985-1-27 4836 Butte Along the road at Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC288956  Conyza floribunda John Thomas Howell 1959-9-20 34632 Butte Eastern outskirts of Oroville 60 Comment
  CHSC30738  Corallorhiza maculata M. S. Taylor; R. A. Schlising 1980-7-6 3080 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  UCD138901  Corallorhiza striata Kenneth D. Stewart 1965-7-15 s.n. Butte along State Highway 32, around 20 miles north of Forest Ranch. Comment
  RSA412331  Cordylanthus pilosus subsp. pilosus H. F. Copeland 1928-8-14 382 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC62587  Cordylanthus tenuis subsp. tenuis B. Castro 1993-8-5 494 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, abundant along road edges of sharp curve in USFS Rd 23N28. 1133 Comment
  CHSC89483  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 214 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  POM219138  Cordylanthus tenuis subsp. viscidus H. F. Copeland 1928-8-14 382 Butte On fire-swept ridge between Jones Creek and Scotch John Creek. Neighborhood of Jonesville. Comment
  UC1562382  Cordylanthus tenuis subsp. viscidus Vernon Oswald and Lowell Ahart 1990-7-31 4415 Butte ca 2 mi ne Concow (Jeep Trail between Concow Rd and Rim Rd) 899 Comment
  CAS-BOT-BC209588  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  CHSC48305  Cornus sessilis Vernon Oswald 1987-4-14 2324 Butte Butte Creek Trail ca. 0.2 mi s of the trailhead near the bridge over Butte Creek nne of De Sabla. 609 Comment
  CHSC41922  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows. Small bogs near a small stream that flows into Butte Creek. 1450 Comment
  CHSC58279  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC39619  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC309  Cotula coronopifolia V. Holt 1936-3-30 Butte Near Cherokee. 396 Comment
  CHSC84025  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC291333  Cotula coronopifolia Lowell Ahart 1979-5-20 s.n. Butte 2 miles south of Palermo 35 Comment
  CAS-BOT-BC427630  Crassula aquatica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC38403  Crassula aquatica Vernon Oswald 1983-5-11 466 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CHSC100971  Crassula connata L. P. Janeway 2008-3-18 9238 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  UCD101854  Crassula connata Michael A. Vincent; Ethan H. Freid 1998-4-6 8126 Butte Table Mountain. Comment
  CHSC30373  Crassula tillaea J. D. Jokerst 1979-3-9 1143 Butte Top of North Table Mt., 20 m N of Cherokee Rd. Comment
  JEPS124192  Croton setiger Lowell Ahart 2015-10-9 20543 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC51910  Crucianella angustifolia L. P. Janeway 1988-6-19 2820 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd. 274 Comment
  SEINET3477506  Crucianella angustifolia Unknown 2003-5-26 10214 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.67 miles east of Honcut 60 Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC34195  Crypsis schoenoides J. D. Jokerst; L. Ahart 1981-9-26 1488 Butte On sand bars adjacent to and E of Sacramento River at the Bidwell River State Park (Chico Landing), ca. 5.0 mi W of Chico. Comment
  JEPS108962  Crypsis schoenoides Lowell Ahart 2006-9-11 13303 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
  CHSC37662  Crypsis vaginiflora T. B. Devine 1981-9-3 768 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  SEINET10518387  Crypsis vaginiflora Lowell Ahart 1982-1 Ahart 3673 Butte On dry bare soil bottom of dry duck pond, ca. 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 13 mi sw of Gridley. Very common. 35 Comment
  CHSC113401  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 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
  CHSC29968  Cryptantha flaccida R. A. Schlising 1979-5-8 3388 Butte E of Chico and SW of Paradise along Skyway. Comment
  POM64217  Cryptantha flaccida A. A. Heller, H. E. Brown 1902-5-9 11940 Butte Berry Canyon (Near Clear Creek). Comment
  SD240919  Cryptantha flaccida George K Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70,near the Feather River (Palermo 7.5'Q) 46 Comment
  CHSC29286  Cryptantha intermedia R. A. Schlising 1980-5-4 3579 Butte Along Lunt Road, 1/4 mi n of jct with Hwy 70, north of Hwy 70 crossing Lake Oroville. Comment
  CHSC67753  Cryptantha intermedia James D. Jokerst; M. S. Taylor 1980-4-19 611 Butte Humbug Rd. 7.4 mi N of Centerville Cemetery. Comment
  CHSC33417  Cryptantha simulans R. A. Schlising; M. S. Taylor 1980-7-5 3830 Butte 0.25 miles S of Tehama County line on Hwy 32. 1121 Comment
  CHSC43576  Cryptogramma acrostichoides Vernon Oswald 1987-6-9 2969 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  UC600569  Cryptogramma acrostichoides E. B. Copeland 1930-7-12 Butte Jonesville, Upper Butte Creek area Jonesville 1800 Comment
  NY16720  Cupressus macnabiana C. B. Wolf 1934-10-5 6160 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC94186  Cuscuta californica var. californica Lowell Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  RSA4472  Cuscuta suksdorfii var. subpedicellata E. B. Copeland 1931-7-17 676 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  CHSC61292  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CHSC83051  Cynodon dactylon Lowell Ahart 2002-10-17 9998 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) northeast of Oroville Dam. 227 Comment
  CHSC28916  Cynoglossum grande M. S. Taylor; J. Jokerst 1980-2-23 2314 Butte East side of Sawmill Rd, ca. 1/2 mi s of Pearson Rd, Paradise. 609 Comment
  CHSC117438  Cynosurus echinatus Lowell Ahart 2016-5-30 20902 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, aabout 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC4306  Cynosurus echinatus R. L. Smith 1966-5-25 9 Butte Paradise 5 mi sw of post office. Comment
  SEINET10507677  Cynosurus echinatus Mary Susan Taylor 1979-9-28 Taylor 2200 A Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CDA38936  Cyperus acuminatus L. Ahart, Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC114705  Cyperus bipartitus Lowell Ahart 1987-8-30 5865 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  JEPS110275  Cyperus bipartitus 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
  CAS-BOT-BC114743  Cyperus difformis Herbert L. Mason; Verne Grant 1946-8-14 13024 Butte Canal near big pond on Sacramento Outing Club. Comment
  CHSC41771  Cyperus difformis Lowell Ahart 1986-11-9 5446 Butte Pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC71197  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 Butte Margins of a seep, west of the lone oak treek west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCSC000115  Cyperus eragrostis H. S. Yates 1936-8-19 6121 Butte 10 miles south of Durham - Chico 30 Comment
  CHSC41770  Cyperus erythrorhizos Lowell Ahart 1986-11-9 5447 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
  CHSC66856  Cyperus erythrorhizos Vernon H. Oswald 1996-9-30 8291 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. Margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  JEPS124351  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UC1563270  Cyperus erythrorhizos unknown 1990-10-21 6640 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  CHSC100229  Cyperus fuscus John Dittes 2003-10-8 850 Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  JEPS95883  Cyperus fuscus Lowell Ahart 1999-10-3 8287 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
  CDA34631  Cyperus niger L. Ahart 2009-6-19 15924 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. Comment
  SEINET13711406  Cyperus niger Lowell William Ahart, Lowell William Ahart 1999-1 8274 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  POM185071  Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  JEPS120166  Cyperus strigosus Lowell Ahart 2012-9-28 18470 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC114207  Cyperus strigosus Lowell Ahart 1981-9-19 3185 Butte Arch Rock Tunnel, Hwy 70. 550 Comment
  CAS-BOT-BC133764  Cypripedium fasciculatum Lowell Ahart 1982-9-13 3809 Butte Field redacted by CAS, contact the data manager for more information 1100 Comment
  CHSC69105  Cystopteris fragilis Lowell Ahart 1997-8-1 7766 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
  JEPS87129  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  SBBG28172  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville; in woods by Butte Crk 1550 Comment
  SD9857  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, by Butte Creek 1550 Comment
  SEINET3166413  Cystopteris fragilis P. J. Alexander 2009-5-27 1051 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, +-200 yards south of the bridge over Frey Creek, 3.3 miles SE of Bald Rock Dome, 17.8 miles ENE of Oroville, Plumas National Forest. 613 Comment
  CHSC49529  Dactylis glomerata Vernon Oswald 1983-6-22 732 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC41995  Danthonia unispicata Lowell Ahart 1973-5-6 311 Butte Along Robinson Mill Road, west of Forbestown. 457 Comment
  CHSC44830  Darmera peltata Steven Triano 1987-4-19 45 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico, growing among rocks in the West Branch Butte Creek. 853 Comment
  CHSC38733  Daucus pusillus Vernon Oswald 1983-5-7 446 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CAS-BOT-BC8793  Delphinium gracilentum Lowell Ahart 1980-4-30 2127 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC8570  Delphinium hansenii John Thomas Howell 1962-6-16 37602 Butte Feather River West Branch, southwest of Nelson Bar 304 Comment
  CHSC52459  Delphinium hansenii subsp. hansenii Vernon Oswald 1983-5-21 509 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  JEPS104212  Delphinium hansenii subsp. hansenii Lowell Ahart 2003-5-27 10225 Butte On the e side of the dirt road, at Parking Area P, Upper Bidwell Park, ca 5 mi e of Manzanita Avenue, Chico. 228 Comment
  CAS-BOT-BC9922  Delphinium nudicaule Ira L. Wiggins 1925-3-22 1479 Butte Chico Creek canyon about five miles above Chico Comment
  SD234160  Delphinium nudicaule Virginia Pinkus Ryder 1965-4-3 368 Butte Table Mountain. Growing at edge of Coal Canyon and down into basaltic canyon. 366 Comment
  CHSC56876  Delphinium patens Keith Lickey 1976-4-17 68 Butte Hwy 70, 500 m sw of Grizzly Dome Tunnel; n-nw slope. 914 Comment
  CHSC3260  Delphinium variegatum Virginia Hagaman 1966-4-17 115 Butte 2.4 miles east of Chico State college. Field across road from golf course in Bidwell Park. Comment
  CAS-BOT-BC17018  Delphinium variegatum C. C., Mrs. Bruce 1897-5-1 1918 Butte Fields. Comment
  CAS-BOT-BC82879  Dendromecon rigida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  UC726213  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte along the Feather River Hwy about 1 mi w Jarboe Pass (about 20 mi from Oroville) 609 Comment
  SEINET10448606  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1975-5-9 Taylor 570 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  CHSC11981  Deschampsia cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville. Border of 'Lily Pond'. 1750 Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  UCR143552  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1930-7-25 1344 Butte Jonesville 1524 Comment
  CAS-BOT-BC192658  Deschampsia danthonioides John Thomas Howell; Gordon H. True 1967-5-7 42175 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CHSC6145  Deschampsia danthonioides E. Parreno 1968-4-19 70 Butte Cherokee rd. e of Cherokee cemetary. Comment
  SEINET3927686  Deschampsia danthonioides B. Ertter, Jeff Strachan 1980-5-5 3255 Butte Peter Ahart Ranch ca 1.5 miles northeast of Honcut between Oroville and Marysville. North of house.; 0 30 Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  CAS-BOT-BC201750  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  SEINET10933470  Deschampsia elongata A. Arthur Heller 1917-7-26 Heller 12846 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
  CHSC636  Dicentra formosa R. M. Staley 1952-7-13 Butte Ponderosa Way. 609 Comment
  UC120094  Dicentra formosa Mrs. R. M. Austin 1896-1 230 Butte Colby Comment
  SEINET10892860  Dichanthelium lanuginosum Lowell Ahart 1987-5-27 Ahart 5715 Butte On dry sand, 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
  CHSC77454  Dichelostemma capitatum subsp. capitatum Laura Bogni 1997-3-25 9 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC96620  Dichelostemma capitatum subsp. capitatum L. P. Janeway; B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  UCD148233  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2013-3-16 2894 Butte Table Mtn, ca. 0.2 mi SE of where Cherokee Rd leaves oak woodland and emerges onto the mesa. 364 Comment
  RSA333553  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-23 32 Butte South end of 18th Street, about 0.25 mile S of State Route 162 in Thermalito. 150 Comment
  RSA333574  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 23 Butte Along Cherokee Road, 0.5 mile N of intersection with Oregon Gulch Road, near South Table Mountain, N of Oroville. 450 Comment
  CHSC45017  Dichelostemma congestum E. Ray Latham 1988-4-21 Butte Large population 100m e of e end Fremont st., Chico. 30 Comment
  RSA333579  Dichelostemma lacuna-vernalis Craig Martz, Richard F. Sannar 1982-3-22 30 Butte East side of State Route 191 at intersection of Pentz Road. 300 Comment
  CHSC3815  Dichelostemma multiflorum L. E. Dunkel 1965-4-15 21 Butte Ca. 200 yards sw of Chico Rod and Gun Club building and ca. 600 yards nw of Municipal Golf Course building, Chico. 33 Comment
  CHSC4165  Dichelostemma multiflorum R. Carter 1966-4-30 384 Butte Found 7 mi. E of Oroville, ca. 1/8 mi. w off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CHSC90610  Dichelostemma multiflorum Roberta A. Boer 1980-4-25 15 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, east side of Chico. 131 Comment
  UC843822  Dichelostemma multiflorum A. A. Heller 1915-5-28 11902 Butte near Cohasset; Sierra Foothills Comment
  SEINET12053819  Dichelostemma multiflorum L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CHSC31528  Dichelostemma volubile L. Ahart 1977-5-22 1396 Butte Along the sides of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET8476819  Dichelostemma volubile M. J. Williams, W. Roderick 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road. 168 Comment
  CAS-BOT-BC502514  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  CHSC108136  Digitaria sanguinalis Lowell Ahart 2011-10-29 17728 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
  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
  JEPS110335  Digitaria sanguinalis Lowell Ahart 2006-10-8 13433 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  JEPS115002  Digitaria sanguinalis Lowell Ahart 2007-11-3 14568 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
  SEINET10508481  Digitaria sanguinalis Lowell Ahart 1985-11-7 Ahart 5236 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CAS-BOT-BC150203  Diplacus John Thomas Howell 1967-6-22 42608 Butte Magalia 701 Comment
  CHSC20519  Diplacus angustatus M. S. Taylor 1975-4-26 528 Butte In meadow ca. 1/4 mi ne of Kunkle Reservoir, ca. 1 mi s of Paradise. 609 Comment
  CHSC44776  Diplacus angustatus R. Banchero 1980-4-9 102 Butte Along Cherokee Rd ca 1.0 mi N of its jct with Oregon rd, 2.3 mi S of the town Cherokee. 426 Comment
  SEINET13693578  Diplacus aurantiacus W. Short 1959-4-11 15 Butte On US Hwy 40, 15 miles E of Oroville. Comment
  SEINET10570112  Diplacus grandiflorus Mary Susan Taylor 1981-4-5 Taylor 3481 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET13751112 Image available Diplacus grandiflorus F. W. Pennell, A. A. Heller 1940-1 25673 Butte Route 24, 6 miles up, along Feather River, above Oroville 91 Comment
  CHSC4612  Diplacus kelloggii R. Carter 1966-4-11 329 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R.R. tracks on S side of river. Comment
  CHSC67392  Diplacus kelloggii James D. Jokerst; R. A. Schlising 1985-4-8 2220 Butte Above Hwy. 70 2.3 mi SE of Pulga Rd. 609 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CHSC92735  Diplacus mephiticus L. P. Janeway 2005-6-26 8439 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CAS-BOT-BC154175  Diplacus tricolor Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET8255121  Diplacus tricolor K. L. Chambers 1991-4-30 5551 Butte junction of Hwy. 99 with Hwy. 149, between Chico and Oroville. Comment
  JEPS98609  Distichlis spicata Lowell Ahart 2000-6-21 8502 Butte On the margins of a seep, about 50 yards west of the dirt road at Parking Area L, west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC96410  Distylium racemosum L. P. Janeway 2007-3-8 8964 Butte Sacramento Valley. On the campus of California State University Chico; 35 m north of Big Chico Creek, 18 m east of the pedestrian path across the creek to the middle of Holt Hall; part of the Camellia Garden. 60 Comment
  CAS-BOT-BC136235  Dodecatheon alpinum H. F. Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  CHSC52454  Dodecatheon clevelandii subsp. patulum John Copeland 1980-1-19 3 Butte 50 ft NE of locked gate, 0.5 mi E of Meridian Rd, 1.5 mi N of hwy 99, ca 5 mi N of Chico. Comment
  CHSC13896  Dodecatheon hendersonii J. F. Goodwin 1972-3-4 180 Butte 3.8 mi ne on Cherokee road from Table Mountain Road in Oroville, on northwest side of road. Comment
  CHSC48667  Dodecatheon hendersonii Vernon Oswald 1984-4-9 1124 Butte Feather Falls Trail, 0.75 trail mi n of the trail head at the end of Bryant Ravine Rd. 701 Comment
  SEINET10449643  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1665 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC46675  Downingia bacigalupii V. Oswald; L. Ahart 1989-8-15 3943 Butte Soda Ridge Road, 1.4 mi w of its jct with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  POM68175  Downingia bicornuta C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  CHSC88966  Downingia bicornuta var. bicornuta Christine Hantelman 2000-5-3 71 Butte On west side of Meridian Road about 2 mi after turnoff from Hwy 99. In bottom of vernal pool. 57 Comment
  CHSC182  Downingia insignis M. Underhill 1952-6-30 Butte Sacramento Valley. 54 Comment
  UCD23256  Downingia ornatissima W. R. Powell 1968-4-23 1474 Butte 2 miles SSE of Oroville. 71 Comment
  SEINET10458519  Downingia pulchella Mary Susan Taylor 1974-4-24 Taylor 186 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  UCD115553  Draba verna L. Ahart 1973-11-21 149 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile N and 2.5 miles E of Honcut, about 12 miles S of Oroville. 39 Comment
  CHSC101077  Draba verna var. aestivalis Lowell Ahart; John Dittes 2009-3-20 15503 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC103673  Draba verna var. aestivalis Lowell Ahart 2010-4-30 16584 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC34538  Draba verna var. aestivalis A. K. Bos 1978-3-11 1 Butte Along Cohasset Hwy, 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, 7 mi ne of Chico. Comment
  CHSC35013  Draba verna var. verna R. E. Preston 1982-3-6 186 Butte Dirt road, ridge on s side of canyon of Sycamore Creek; ca. 300 yds n of boundary of Upper Bidwell Park n of Horseshoe Lake, Chico. 182 Comment
  CHSC108716  Drosera rotundifolia B. Castro; L. P. Janeway 2002-7-7 1377 Butte High Cascade Range. Soggy sedge-dominated meadow ... Field redacted by CHSC, contact the data manager for more information 170 Comment
  CHSC41360  Drosera rotundifolia R. A. Schlising 1980-7-14 3890 Butte 1.1 mile S of Inskip along the Skyway. ... Field redacted by CHSC, contact the data manager for more information Comment
  RSA0011687  Drosera rotundifolia H. F. Copeland 1931-8-8 1421 Butte Jonesville. Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  JEPS107858  Drymocallis glandulosa var. glandulosa Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 430 Comment
  CAS-BOT-BC159640  Drymocallis glandulosa var. glandulosa M. S. Taylor 1982-5-2 4393 Butte Pulga serpentine, N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  CAS-BOT-BC70856  Dryopteris arguta Lowell Ahart 1975-3-7 s.n. Butte 1/2 mile from the Forbestown Reservoir, Forbestown 365 Comment
  CDA25368  Dudleya cymosa subsp. gigantea L. L. Heinrichs 1971-5-27 Butte Swede Flat Road, Oroville. 0 Comment
  CHSC25520  Dysphania ambrosioides Hayes; Warner 1977-9-11 61 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of the Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  JEPS128762  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south Oroville. Comment
  CHSC116129  Dysphania botrys Lowell Ahart 2015-11-7 20617 A Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC76050  Dysphania botrys G. F. Hrusa; T. D. Wilfred 1996-7-8 13082 Butte In full sun at old gun range. Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 800 Comment
  CHSC74084  Dysphania pumilio B. Castro 1996-8-20 716 Butte Ca 5 air mi N of Brush Creek, ca 0.25 mi S of Rogers Cow Camp via 'J' spur rd S of USFS Rd 23N15. 1222 Comment
  UCD18742  Echinochloa colona Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 35 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC112604  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 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
  SD122513  Echinochloa crus-galli Lowel Ahart 1984-9-17 4792 Butte Peter Ahart Ranch, circa 2.3 miles North and 0.3 miles East of Honcut, circa 12 iles South of Oroville 49 Comment
  SEINET10868954  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET4568109  Echinochloa crus-galli var. zelayensis P. Kennedy 1920-7-13 3094 Butte Chico Comment
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  UCD61163  Echinochloa oryzicola B. Voorhees 1997-8-21 Butte Davit Dayton Ranch, south of Chico. Comment
  SEINET3097024 Image available Echinodorus berteroi Marc Mittleman 1980-8-1 223 Butte Little Chico Creek, east side adjacent to China Garden Springs 262 Comment
  UCD137954  Echinodorus berteroi Herbert L. Mason; Verne Grant 1946-9-4 13107 Butte Butte Sink. 833 Canal, West Gridley Road. Comment
  CDA38810  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  RSA796045  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CAS-BOT-BC291138  Eclipta prostrata Lowell Ahart 1981-9-26 3203 Butte Along the Sacramento River, ca. 6 mi. W of Chico 40 Comment
  CHSC114971  Elatine Lowell Ahart 2015-3-31 19983 Butte Bottom of a large duck field, 50 yards north of Parking Lot 3, about one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6-1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC42128  Elatine ambigua Lowell Ahart 1978-5-12 1716 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET11994725  Elatine heterandra Unknown 1984-1 4596 Butte ca 25 mi N and 1.4 mi E of Honcut, ca 12 mi S of Orovill 40 Comment
  SEINET13709911  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8691 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Mi SW of Chico Comment
  CHSC78735  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-9-15 8690 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
  CHSC97253  Eleocharis atropurpurea Lowell Ahart 2007-8-19 14489 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC113461  Eleocharis bella Herbert Faulkner Copeland 1920-8-20 212 Butte Butte Creek Meadow Comment
  JEPS98464  Eleocharis bella Lowell Ahart 2000-9-4 8684 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
  CHSC109771  Eleocharis macrostachya Lowell Ahart 2012-10-28 18534 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC68428  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1812 Butte Border along Philbrook Reservoir at PG and E Picnic Area on northeast side of lake. 1691 Comment
  CHSC94556  Eleocharis macrostachya Lowell Ahart 2006-9-13 13315 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS98604  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, ca 1/4 mile NE of Kunkle Reservoir, E of Pentz Magalia Road, ca 2 miles S of Paradise. 548 Comment
  RSA0046896  Eleocharis macrostachya Richard Carter 2006-7-30 17100 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99; along Mud Creek. Comment
  SEINET13711130  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8702 Butte E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi. SW Chico Comment
  CHSC76426  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95984  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 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
  CHSC117404  Eleocharis pachycarpa B. Castro; Tom Boullion, Jessica Boyt 2008-10-21 1771 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. 57 Comment
  CHSC37108  Eleocharis pachycarpa L. Ahart 1982-10-15 3887 Butte Sand bar along edges of North Honcut Creek, ca. 1 mi n and 2.7 mi e of Honcut. 50 Comment
  CAS-BOT-BC113142  Eleocharis pachycarpa John Thomas Howell 1954-5-18 29840 Butte 1.5 mi NNE of Buena Vista 91 Comment
  SEINET11263892  Eleocharis pauciflora Lowell Ahart 2000-5-10 8333 Butte Peter Ahart Ranch, about 1 3/4 miles N and 1 1/4 miles E of Honcut, about 12 air miles SE of Oroville.; 0 37 Comment
  JEPS99032  Eleocharis quadrangulata Vernon H. Oswald, Lowell Ahart, and Barbara Ertter 1998-10-22 9676 Butte 1 mi S of Oroville Municipal Airport (N shore of pond at clay pits on E side of Larkin Rd. just S of boundary of the Oroville WA) 41 Comment
  SEINET9770291 Image available Eleocharis quadrangulata Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  JEPS98287  Eleocharis quinqueflora Lowell Ahart 2000-5-10 8333 Butte 12 air miles SE of Oroville (N margin of a large wash, just W of the road crossing, Peter Ahart Ranch, 1 3/4 mi N and 1 1/4 mi E of Honcut) 36 Comment
  JEPS98442  Eleocharis quinqueflora Lowell Ahart 2000-5-27 8405 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
  RSA692209  Eleocharis quinqueflora L. Ahart 2003-5-28 10231 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville 272 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
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  JEPS98469  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte 3 1/3 air miles SW of Oroville (SE of a large pond 100 yds S of Feather River, W of break in levee, 1/2 air mile W of Pacific Heights Road); Oroville Wildlife Area 42 Comment
  JEPS98610  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  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
  SEINET3441890  Eleocharis suksdorfiana Unknown 2000-7-5 8552 Butte Stirling City, Stirling City, about 4.5 miles north, about 1 mile south of Inskip, about 100 yards west of the skyway 1310 Comment
  CHSC75434  Elymus caput-medusae Jennifer Slater 1997-4-20 30 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UCD61904  Elymus glaucus A. A. Beetle 1941-6-27 2742 Butte 20 miles northeast of Chico. Comment
  CHSC110225  Elymus glaucus subsp. glaucus L. P. Janeway 2012-6-2 10838 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-BC234102  Elymus multisetus Lowell Ahart 1977-6-16 1506 Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA718076  Elymus trachycaulus subsp. subsecundus L. Ahart 2006-7-16 12999 Butte on northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1516 Comment
  CHSC65412  Elytrigia intermedia subsp. intermedia Vernon Oswald 1988-6-30 3542 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. On the edge of the road. 1146 Comment
  CHSC23720  Enemion occidentale L. V. Ritter 1969-3-28 100 Butte N side of Wilenor Lake, ca .5 mi. e of dam. Comment
  CAS-BOT-BC410231  Enemion occidentale Flower Shaw 1929-4-1 s.n. Butte Unspecified. Comment
  SEINET11266286  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico. Erect shrub without need of support, about 2 feet high.; 0 Comment
  CDA38260  Epilobium brachycarpum G. F. Hrusa, S. Dubiel 2012-9-9 18507 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  SEINET6635763 Image available Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 mi N of Oroville Comment
  UCD105378  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. 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
  CHSC117433  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC34013  Epilobium campestre L. Ahart 1981-7-18 2937 Butte On bottom of a drain ditch along the edge of the Pacific Heights Rd, ca. 1/8 mi w of Hwy 70, ca. 3 mi sw of Oroville. 35 Comment
  CAS-BOT-BC166846  Epilobium canum subsp. latifolium M. S. Taylor 1982-8-16 5017 Butte S side of jct of Big Kimshew Creek and Bald Mt - Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City 1432 Comment
  UC1564743  Epilobium canum subsp. latifolium V. Oswald and L. Ahart 1989-8-15 3946 Butte ca 2 air mi e Philbrook Reservoir (outcrop between High Lakes Rd and Carr Mine) 1920 Comment
  UC1562295  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along small stream below high water line of Lake Oroville (e of Enterprise Boat Launch Area, about 1/4 mi nw of Enterprise Bridge across lake) 243 Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  UCD105645  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-9-13 3813 Butte Pinkard Creek, ca. 1/8 mile N of Lost Creek Reservoir Dam, ca. 2.2 miles NW of Strawberry Valley. 1100 Comment
  CHSC84249  Epilobium densiflorum Lowell Ahart 1983-6-26 4120 Butte Found on the sides of a small stream 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
  JEPS104290  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the n side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  RSA795667  Epilobium densiflorum L. Ahart 2012-8-12 18418 Butte South edge of North Honcut Creek, about 0.75 miles north and 2.5 miles east of Honcut, about 13 miles southeast of Oroville. 40 Comment
  CHSC48632  Epilobium minutum Vernon Oswald 1987-6-2 2943 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  CHSC92586  Epilobium minutum L. P. Janeway 2005-5-29 8400 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  CHSC92730  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  JEPS108857  Epilobium minutum Lowell Ahart 2006-5-10 12623 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 385 Comment
  CHSC66067  Equisetum arvense Vernon H. Oswald 1996-5-22 7618 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  CHSC116290  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC38235  Equisetum hyemale subsp. affine Vernon Oswald 1983-6-7 640 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 800 ft e of the footbridge at the golf course. 91 Comment
  CAS-BOT-BC33516  Equisetum laevigatum Edwin Bingham Copeland 1930-6-24 403 Butte Jonesville 1500 Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle 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) northeast of Oroville Dam. 227 Comment
  CHSC76863  Eragrostis minor L. P. Janeway 1999-6-26 6491 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of the Ord Ferry Road bridge. 28 Comment
  JEPS113699  Eragrostis pectinacea var. pectinacea Lowell Ahart 2007-6-12 14083 Butte E side of Rockefeller Road, at the intersecton of Bald Rock Road and Rockefeller Road, about 13 mi (air) NE of Oroville 1011 Comment
  CAS-BOT-BC278514  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  CHSC76430  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 Butte On the west side of a pond, 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
  CHSC60278  Eremogone cliftonii L. P. Janeway 1987-5-20 2082 Butte Cyn of N Fk Feather R. N-facing slope just above hwy 70 3.1 mi NE of Pulga bridge. 472 Comment
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  CAS-BOT-BC168360  Eremogone ferrisiae Lowell Ahart 1983-7-29 4246 Butte 2 miles east of Milsap Bar, ca. 25 miles northeast of Oroville - Sutter Buttes Region 900 Comment
  CHSC41869  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC61628  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  CHSC110404  Erigeron canadensis Lowell Ahart 2012-9-28 18456 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC113979  Erigeron canadensis Lowell Ahart 2014-11-17 19910 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
  UCD131759  Erigeron canadensis A. A. Heller 1914-8-13 11680 Butte Hills 8 miles north of Oroville. Comment
  JEPS87160  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CAS-BOT-BC296823  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek Comment
  CAS-BOT-BC300618  Erigeron foliosus var. hartwegii Lowell Ahart 1980-5-12 2252 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC295165  Erigeron inornatus Lowell Ahart 1988-7-28 6138 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  SD5418  Erigeron lassenianus E. B. Copeland 1929-7-17 Butte Above Jonesville. 2000 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon Comment
  CHSC113844  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  RSA0118748  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown 611 Comment
  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
  JEPS123966  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte About 300 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  CHSC29787  Eriogonum lobbii M. S. Taylor; R. S. Schlising, J. D. Jokerst 1980-6-14 2872 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC45366  Eriogonum luteolum var. luteolum Vernon Oswald 1987-7-6 3097 Butte Butte Creek Reserve on the n side of Butte Creek, ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  RSA0005066  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 610 Comment
  CHSC33513  Eriogonum marifolium var. marifolium R. A. Schlising 1981-6-28 4120 Butte E of Stirling City and W of Little Kimshew Creek in E part of county; on andesitic Table Mountain. 1828 Comment
  RSA781350  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 149 Butte Humboldt road. Comment
  CHSC39139  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-6-23 4304 Butte N of Concow area and SE of Stirling City; on roadside bank. 914 Comment
  UC489637  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  POM319187  Eriogonum pedunculatum Patricia Wilder 1971-6-23 5181 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
  JEPS113681  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC41365  Eriogonum umbellatum var. ahartii R. A. Schlising 1981-6-22 4105 Butte E part of county NE of village of Feather Falls at Lumpkin Ridge. 1280 Comment
  CHSC46787  Eriogonum umbellatum var. ahartii R. A. Schlising 1980-7-7 3857 Butte E part of county, NE of village of Feather Falls at Lumpkin Ridge. 1280 Comment
  JEPS117896  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Ridge top at head of Rattlesnake Creek (short tributary to West Branch Feather River) about 2.9 air km east of Magalia and 0.8 air km east of Sawmill Peak Northern High Sierra Nevada 951 Comment
  CAS-BOT-BC262206  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  CHSC37517  Eriogonum ursinum var. ursinum M. S. Taylor 1982-6-6 4608 Butte On serpentine along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC58942  Eriogonum ursinum var. ursinum Lowell Ahart 1992-7-29 6884 Butte On rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC88276  Eriogonum vimineum Lowell Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC33152  Eriophyllum lanatum var. grandiflorum L. E. Delight 1973-5-1 26 Butte Ca. 300 yds e from Centennial Ave, ca. 1 mi e of intersection of Centennial Ave and Manzanita Ave, Chico. 91 Comment
  SEINET10475231  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-4-19 Taylor 2535 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  JEPS115287  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UCD103168  Erodium cicutarium A. A. Heller 1914-4-21 11312 Butte Chico. Comment
  CHSC60968  Erysimum capitatum var. capitatum Lowell Ahart 1993-7-6 7058 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  SD7062  Erythranthe bicolor Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC61503  Erythranthe floribunda Lowell Ahart 1993-5-10 6934 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CAS-BOT-BC153857  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte On the bottom of Lindo Channel, about 1/10 mile east of Longfellow Avenue, Chico 65 Comment
  CAS-BOT-BC153868  Erythranthe glaucescens Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  CHSC110634  Erythranthe glaucescens Christopher T. Ivey 2013-5-9 379 Butte Platte Mountain. Above W branch of Butte Creek. About 1.5 km S of Hwy 32/Crpenter Ridge Rd. intersection along old logging road. 880 Comment
  CHSC1767  Erythranthe glaucescens R. M. Staley 1952-7-2 Butte W. Branch of Feather River. Comment
  CHSC40886  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte About 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  SEINET8391710  Erythranthe glaucescens Sean Marquis 1998-4-26 3 Butte 1/4 re mile w of Richardson Springs, next to road. 183 Comment
  CHSC113154  Erythranthe guttata Lowell Ahart 2013-11-13 19249 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC41284  Erythranthe guttata S. C. Morey 1983-7-21 502 Butte Cherry Hill Meadow. On n side of Humbolt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44679  Erythranthe microphylla R. Banchero 1980-5-23 161 Butte Along Nelson Bar Rd 1.0 mi SW of its jct with Lunt Rd. 432 Comment
  SD4665  Erythranthe moschata E. B. Copeland 1929-7-13 463 Butte Jonesville, in half shady glades 1550 Comment
  CHSC44674  Erythranthe nasuta R. Banchero 1980-4-26 136 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, 0.1 mi SW of the town of Cohasset. 451 Comment
  CHSC105187  Erythranthe pulsiferae B. Castro; L. P. Janeway 1999-8-1 1024 Butte NE shore of Summit Lake, ca 0.7 mi NE of Snow Mtn. 1886 Comment
  SEINET10469669  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3462 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  CHSC31848  Erythronium multiscapideum L. Ahart 1977-3-28 1231 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43796  Erythronium purpurascens Vernon Oswald 1984-7-12 1575 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  CAS-BOT-BC110542  Eschscholzia John Thomas Howell 1955-6-15 30506 Butte West Branch of North Fork of Feather River. 182 Comment
  HSC23330  Eschscholzia californica L. Walk 1971-4-9 3 Butte S bank of stream, .5 mi. SE of Keefer Rd., 1.5 mi. E of Hwy. 99, Chico 30 Comment
  CHSC20114  Eschscholzia lobbii M. S. Taylor 1975-4-26 509 Butte Scattered in meadow on e side of Kunkle Reservoir, ca. 40 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  UC1594722  Eucephalus breweri Lowell Ahart 1992-7-29 6889 Butte ca 3/4 mi nw of, (ca 1 mi ne of Carr Mine) Lotts Lake 1798 Comment
  UC600728  Eucephalus breweri H. F. Copeland 1932-7-24 Butte sw Butte Creek Meadows; Jonesville Comment
  CHSC44277  Euonymus occidentalis var. occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek Reservoir. Near the creek. 1028 Comment
  CHSC95098  Euonymus occidentalis var. occidentalis L. P. Janeway 2006-8-6 8831 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  CHSC21006  Euphorbia peplus M. S. Taylor 1975-4-6 433 Butte On ne corner of Arcadian and W. 4th Ave, Chico. 60 Comment
  CHSC48380  Euphorbia peplus Vernon Oswald 1987-3-26 2297 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. Between some ponds in dredger tailings. 73 Comment
  RSA0106562  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horeshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CHSC62356  Euphorbia spathulata B. Castro 1990-4-21 420 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. Near top of embankment at foot of canyon hillside. 146 Comment
  UC600725  Eurybia integrifolia H. F. Copeland 1932-8-21 Butte near, Jonesville Kennedy's cabin 487 Comment
  CAS-BOT-BC312201  Eurybia radulina Lowell Ahart 1980-9-10 2640 Butte 7 miles east of Milsap Bar, Sierra Nevada 1200 Comment
  SEINET8687816 Image available Eurybia radulina K. Stiles 1907-1 150 Butte Brush Creek Comment
  JEPS115677  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CAS-BOT-BC278271  Festuca californica John Thomas Howell; Gordon H. True 1967-5-9 42243 Butte On northwest side of Feather River Canyon near Pulga Bridge 426 Comment
  JEPS110240  Festuca californica var. californica Lowell Ahart 2006-5-10 12626 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
  CDA42857  Festuca myuros L. Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  CHSC113276  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC74165  Festuca subulata B. Castro; L. Gehrung 1998-6-23 796 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, ca 200 ft W of Oro-Quincy Hwy on E side of ridge overlooking Get-Up-and-Get Creek. Ca 100 ft above creek channel. 1213 Comment
  JEPS95024  Festuca subulata Lowell Ahart 1997-7-11 7807756 Butte abour 2 air mi ne of Stirling City (s of the dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  UC1609519  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte about 6 (air) mi n.e. Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River, s. of Fall River) 1036 Comment
  SEINET10507969  Festuca subuliflora Lowell Ahart 1991-6-19 Ahart 6660 Butte Along the south side of the dirt road that goes to the Forbestown Reservoir, about 1 1/2 miles southwest of Forbestown Reservoir. Yellow Pine Forest. T19N R7E NW/S5. 610 Comment
  CAS-BOT-BC77687  Ficus carica Lowell Ahart 1987-8-8 5857 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC45132  Fimbristylis autumnalis Vernon Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CDA5502  Foeniculum vulgare L. Ahart 2001-6-13 8816 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC62903  Frangula californica subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia. 731 Comment
  CAS-BOT-BC62935  Frangula californica subsp. tomentella Gladys L. Smith 1976-5-18 s.n. Butte Lower Feather River Canyon, right side of State Route 70 just before first new turnout. Comment
  CAS-BOT-BC62946  Frangula californica subsp. tomentella Lowell Ahart 1968-5-8 972 Butte Peter Ahart Ranch, Honcut. 150 Comment
  SEINET7417508 Image available Frangula purshiana A. A. Heller 1919-1 13157 Butte Feather River near Stirling [City] Comment
  CHSC1522  Frangula rubra 1954-5-30 Butte Kimshew, Rag Dump 5, out from Stirling. 975 Comment
  CHSC108992  Fraxinus dipetala Lowell Ahart 2012-4-30 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 254 Comment
  CHSC20105  Fraxinus dipetala M. S. Taylor 1975-4-25 498 Butte On e side of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  CHSC27178  Fraxinus dipetala M. MacArthur 1968-6-19 233 Butte Along NW edge of Big Chico Creek near Dining Hall bridge, Chico State College. 60 Comment
  POM76517  Fraxinus latifolia C. C. Bruce 1897-03 1789 Butte Little Chico 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
  CHSC118038  Fremontodendron decumbens Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 236 Butte Durham Native Plant trail near elementary school. 55 Comment
  JEPS119568  Fritillaria affinis Lowell Ahart 2012-2-22 17747 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC130312  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte Old Utah Mine, near Magalia Comment
  CHSC88655  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 266 Butte Plumas National Forest. In fill slope on Galen Ridge. 792 Comment
  JEPS114198  Fumaria officinalis Elena Alfieri 2008-5-19 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Comment
  CHSC20972  Galium bolanderi M. S. Taylor 1975-9-12 906 Butte Ca. 24 mi NE of Chico, ca. 500 ft W of Hwy 32. 1066 Comment
  POM174355  Galium grayanum var. grayanum H. F. Copeland 1928-8-29 1015 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  SEINET10902549  Galium murale Mary Susan Taylor 1978-4-14 Taylor 1551 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  JEPS110290  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  CHSC101187  Galium porrigens L. P. Janeway; B. Castro 2009-4-18 9725 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 747 Comment
  UC1143092  Galium porrigens C. G. Albertus 1933-6-6 23 Butte 1/4 mi w Pentz; Chico Quadrangle 137 Comment
  UC175553  Galium porrigens A. A. Heller 1913-5-28 10769 a Butte 8 mi n Oroville (ditch along Table Mountain) 182 Comment
  CHSC36162  Galium porrigens var. tenue Linyi Maslin 1981-3-25 6 Butte Bank SE of Butte Creek Canyon off Skyway between Chico and Paradise. 242 Comment
  CHSC51911  Galium porrigens var. tenue Kim Haas 1988-4-24 6 Butte Ca 100 ft SE of Horesshoe Lake and 6.0 mi NE of Chico. 131 Comment
  UC1523188  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte ca. 2 mi s Lake Madrone (n side of Oroville-Quincy Hwy) 609 Comment
  UC1586557  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte about 2 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CHSC51371  Galium trifidum var. pacificum Vernon Oswald 1990-9-11 4449 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. 960 Comment
  JEPS98530  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte on the SE side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) NE of Feather Falls. 1219 Comment
  CHSC51915  Galium trifidum var. pusillum L. P. Janeway 1987-7-4 2419 Butte Along W Br Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  UC1564793  Galium trifidum var. pusillum V. Oswald and L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House (ca 3.3 air mi se of Jonesville); Butte Creek 1767 Comment
  CHSC33790  Galium triflorum M. S. Taylor 1981-5-14 3714 Butte N side of Four Mile Ridge-22N33, S of Sly Creek, ca. 1.5 mi NE of Mountain House on Oroville-Quincy Hwy. 853 Comment
  CAS-BOT-BC169935  Garrya fremontii Wm. S. Levis 1931-7-3 s.n. Butte Middle Feather River Comment
  POM183175  Garrya fremontii H. F. Copeland 1930-7-26 1338 Butte Neighborhood of Jonesville, by Government Trail. 1677 Comment
  SEINET10453487  Garrya fremontii Mary Susan Taylor 1983-3-13 Taylor 5245 A Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  CDA2169  Gastridium phleoides L. Ahart 2000-5-13 8340 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  JEPS107518  Gastridium ventricosum Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  JEPS98425  Gastridium ventricosum Lowell Ahart 2000-5-13 8340 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10507449  Gastridium ventricosum Lowell Ahart 1985-6-17 Ahart 5050 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  UCD117437  Gaultheria ovatifolia Clarence R. Quick 1966-6-29 66 -33 Butte Northwest of Sly Reservoir. Comment
  CHSC51883  Gentianopsis simplex L. P. Janeway 1988-7-29 3106 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 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
  CHSC98965  Geranium Lowell 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. 670 Comment
  CHSC7107  Geranium molle James M. Watson 1969-4-4 7 Butte 2.1 mi e of Keefer Road and Cohasset Highway on s edge of Cohasset Highway. 182 Comment
  JEPS115239  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  RSA0028538  Geranium molle L. P. Janeway 2005-3-15 8358 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 kilometers northeast of Bruce Road. 134 Comment
  CHSC45445  Gilia capitata subsp. mediomontana Lowell Ahart 1984-6-8 4671 Butte Along the dirt road to the generator, on the north side of Ponderosa Reservoir, 3/4 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 457 Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  SEINET10496751  Gilia leptalea Mary Susan Taylor 1978-7-19 Taylor 1762 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  HSC43100  Gilia tricolor Maralyn O'Meara 1974-4-20 294 Butte Table Mtn. 305 Comment
  UC106689  Gilia tricolor subsp. tricolor Mrs. R. M. Austin 1896-1-1 92 Butte plains e Chico; e of Chico Comment
  SEINET10458522  Githopsis calycina Mary Susan Taylor 1975-4-29 Taylor 536 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  SEINET10460575  Githopsis pulchella subsp. campestris A. Arthur Heller 1941-5-9 Heller 16106 Butte Clark road, gravelly slope foot of the Paradise grade Comment
  CHSC116983  Githopsis specularioides Lowell Ahart 2016-6-4 20932 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC39534  Githopsis specularioides Lowell Ahart 1983-6-12 4041 Butte Found growing along the road near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC55484  Githopsis specularioides L. P. Janeway 1991-5-2 3924 Butte 1 1/3 mi east of Palermo-Honcut Highway, 3 mi north of Honcut. 48 Comment
  UC890660  Githopsis specularioides A. A. Heller 1915-4-20 11853 Butte 3 mi from Chico (Chico-Centerville road) Comment
  SEINET10873090  Githopsis specularioides Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4041 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
  SEINET10972188  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart s.n. Butte Swedes Flat road, near Bangor 457 Comment
  UCSB40620  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 1 mile west on Truex rd from Hwy 70 Comment
  CHSC83085  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle 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) northeast of Oroville Dam. 227 Comment
  CAS-BOT-BC435022  Glinus radiatus C. C. Parry No date on label s.n. Butte Chico 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
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  RSA713012  Gnaphalium luteoalbum L. Ahart 2005-12-11 12511 Butte Rice Experiment Station between the Main Ditch ad Stine Lateral, on the N side of Hamilton Road, 1/4 mile E of Riceton Hwy 2.25 miles air E of Biggs. 30 Comment
  CAS-BOT-BC302472  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CHSC113155  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC28621  Gnaphalium palustre M. S. Taylor 1979-10-2 2211 Butte On Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC40908  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  JEPS87529  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  SEINET10971220  Gnaphalium palustre Mary Susan Taylor 1980-6-29 Taylor 2990 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC113451  Goodyera oblongifolia Lowell Ahart 2014-8-13 19700 Butte East bank of a small creek, about 100 yards southeast of the Way Point, about 200 yards southeast of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  SEINET10547550  Gratiola Mary Susan Taylor 1975-4-18 Taylor 484 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  CHSC55415  Gratiola ebracteata L. P. Janeway 1991-5-2 3925 Butte 1 mi east of Palermo-Honcut Hwy, ca 2 1/2 mi north of Honcut. 38 Comment
  JEPS32707  Gratiola ebracteata Lewis S. Rose 1963-6-5 63142 Butte 3 mi w Palermo 45 Comment
  CHSC34713  Grindelia hirsutula var. davyi M. S. Taylor 1981-7-10 4059 Butte North side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC84406  Grindelia hirsutula var. davyi Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, about 1/8 mile east of Bean Creek Road, about 1 1/4 miles (air) southeast of Little Bald Rock, about 4 miles (air) southeast of Brush Creek. 801 Comment
  CHSC82092  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC83925  Hamamelis vernalis L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7741 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  JEPS113906  Hamamelis vernalis L. P. Janeway and Erin Brandy 2007-5-9 8977 Butte Northern Sierra Nevada; Along Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC118505  Hardenbergia violacea L. P. Janeway 2017-2-27 12177 Butte Sacramento Valley. On chain-link fence behind buildings and parking area of 875 Mitchell Ave., Oroville (Feather River Ranger District office). 50 Comment
  RSA81717  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles S of Cherokee on road to Oroville. Comment
  CHSC45679  Helenium bigelovii Vernon Oswald 1983-7-6 819 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 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
  CHSC102740  Helenium puberulum Lowell Ahart 2009-8-3 16258 Butte About 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC35991  Helianthella californica var. nevadensis J. D. Jokerst 1982-5-8 1567 Butte N of Forbestown along Ponderosa Way 3/10 mi. N of its jct with Lower Forbestown Rd. Comment
  CHSC42463  Helianthella californica var. nevadensis Lowell Ahart 1987-5-22 5669 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC76120  Helianthus bolanderi G. F. Hrusa 1997-8-5 14064 Butte Sierra Nevada. Grown in Woodland. Magalia. Immed. N of Magalia Reservoir in N hillside above Little Butte Creek. Accessed off Holmwood Rd. Comment
  JEPS115261  Heliotropium europaeum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC41864  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 miles north of Highway 162, about 2 1/2 miles north-west of Biggs. 28 Comment
  CHSC25344  Hemizonia congesta subsp. luzulifolia M. Hayes 1977-7-3 23 Butte Along Pentz Rd. 2.0 km east of Highway 99. 80 Comment
  CHSC31567  Hemizonia congesta subsp. luzulifolia L. Ahart 1974-10-5 658 Butte Near Honcut. 45 Comment
  CHSC357  Hemizonia congesta subsp. luzulifolia V. Holt 1944-9-15 Butte Near Chico. 57 Comment
  UCD34287  Hemizonia congesta subsp. luzulifolia Beecher Crampton 1978-8-21 9661 Butte ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  CHSC75993  Herniaria hirsuta subsp. hirsuta Lowell Ahart; Vernon H. Oswald 1999-8-13 8158 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
  JEPS124002  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC101325  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS115590  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SD40685  Hesperocyparis macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Butte Sierra Nevada Foothills, at Magalia 700 Comment
  UCD110549  Hesperolinon micranthum P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  CHSC61305  Heterocodon rariflorum Lowell Ahart 1993-7-29 7123 Butte Near a seep about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  JEPS98368  Heterocodon rariflorum Lowell Ahart 2000-6-27 8527 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  SEINET10939149  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2684 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
  SEINET10840496  Heterocodon rariflorum Mary Susan Taylor 1980-5-31 Taylor 2770 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
  CHSC30952  Heteromeles arbutifolia L. Ahart 1980-7-4 2455 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  JEPS103460  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CHSC110454  Heuchera micrantha var. erubescens L. P. Janeway 2013-5-19 11109 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +/- overlooking Cresta, along Camp Creek Road 1.7 road km northeast of Dixie Road. 670 Comment
  CHSC25349  Heuchera micrantha var. pacifica Marc P. Hayes 1977-4-22 15 Butte Scattered population, ca. 200 m from confluence of Heinz Crk. and North Fork of Feather River, ca. 20 km nw Paradise. 455 Comment
  CHSC21131  Hirschfeldia incana M. S. Taylor 1975-10-29 974 Butte On n side of Butte Creek, ca. 4 mi e of junc of Humbug Rd and the Skyway. Comment
  JEPS119890  Hoita macrostachya Lowell Ahart 2012-6-5 18159 Butte On the south side of Beatson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC62107  Hoita orbicularis L. P. Janeway 1993-7-2 4425 Butte Plumas National Forest. Open serpentine area above Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swanye Hill to Big Bar Mtn). 926 Comment
  CHSC70793  Hoita orbicularis B. Castro; H. Durio, L. Gehrung 1995-7-24 590 A Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC34145  Holcus lanatus L. Ahart 1981-9-15 3156 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  RSA449801  Holodiscus microphyllus H. F. Copeland 1928-8-29 398 Butte Neighborhood of Jonesville. Summit of Humboldt road. 2134 Comment
  CHSC43732  Holodiscus microphyllus var. glabrescens Vernon Oswald 1983-8-17 984 Butte Humboldt Peak, n-e of Jonesville. 2158 Comment
  CHSC8223  Hordeum arizonicum K. Henegar 1969-4-9 45 Butte Near Horseshoe Lake, Chico. Comment
  CHSC33855  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 850 Butte Meadow. Chico Meadows, 1.1 mi N of the jct of Scout Rd and the Humboldt Rd along the former. 1341 Comment
  CHSC65907  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald 1996-4-20 7398 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 the S paddock of Tract 7, Sanctuary II. 32 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
  JEPS93844  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte about 7 air mi n of Oroville (about 3/8 mi nw of the Ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CDA34626  Hordeum murinum subsp. leporinum L. Ahart 2009-4-17 15562 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC54388  Hordeum murinum subsp. leporinum M. Bailey 1991-3-18 639 Butte On top of a hill northwest of Wallis Pond, Butte College campus. 106 Comment
  CHSC45196  Horkelia fusca subsp. parviflora Lowell Ahart 1984-7-19 4753 Butte Near the edges of a meadow, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 air miles north-east of Stirling City. 1371 Comment
  SEINET10970306  Horkelia fusca subsp. parviflora Mary Susan Taylor 1982-6-24 Taylor 4742 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CAS-BOT-BC143975  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CHSC48854  Horkelia tridentata Vernon Oswald 1983-6-22 743 Butte Near Humboldt Rd. (to Butte Meadows) 2.1 mi n-e of Calif. Hwy 32. 1310 Comment
  CAS-BOT-BC536250  Horkelia tridentata var. tridentata Lowell Ahart 1985-5-15 5001 Butte 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CAS-BOT-BC536253  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CAS-BOT-BC536256  Horkelia tridentata var. tridentata A. A. Heller 1913-6-7 10793 Butte Near Stirling 1036 Comment
  CHSC65557  Hosackia incana L. P. Janeway 1995-6-20 4804 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC74089  Hosackia oblongifolia var. oblongifolia B. Castro; E. Hubert 1996-7-16 684 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on S-facing slope of recently burned area. 1188 Comment
  CHSC87548  Hydrophyllum occidentale R. D. Fischer 2004-3-5 71 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found 0.4 miles west of 10 Mile House Road parking area on south side of road cut-bank. UTM: 10609902E 4406833N. 396 Comment
  UCD119485  Hydrophyllum occidentale A. A. Heller 1915-6-26 12030 Butte Summit of the Sierra Nevada above Jonesville. 2133 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
  SD130456  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  CAS-BOT-BC410227  Hypericum concinnum Lloyd W. Swift 1932-6-6 68182 Butte Brush Creek R.S., Plumas Forest. 1036 Comment
  SBBG4758  Hypericum concinnum H. and M. Dearing 1938-6-21 2047 Butte near Lone Pine Lookout, 19 mi N of Chico Comment
  CAS-BOT-BC401196  Hypericum mutilum Lowell Ahart 1987-9-4 5882 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC742  Hypericum perforatum R. Carter 1964-6-10 112 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. 10 yds. behind house. 121 Comment
  CAS-BOT-BC401331  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CHSC8122  Hypochaeris glabra K. Henegar 1969-4-17 92 Butte Pentz Road, 1/4 m from junction with 99 E. Comment
  CAS-BOT-BC312928  Hypochaeris glabra Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC11955  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  POM195674  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  CAS-BOT-BC133561  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte Near Stirling 1074 Comment
  CHSC21828  Iris macrosiphon J. C. McDonald 1971-3-15 4 Butte Ca. 10 yards n Cohasset road and ca. 3.5 mi ne of Chico Municipal Airport. 152 Comment
  CHSC101663  Isoetes nuttallii Lowell Ahart 2009-4-26 15642 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest 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
  CHSC32607  Isoetes nuttallii J. D. Jokerst; R. A. Schlising 1981-3-23 1267 Butte Ca 100 m S of Neil Rd. Comment
  CHSC58863  Isoetes nuttallii Lowell Ahart 1992-7-21 6814 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC1609406  Isoetes nuttallii Lowell Ahart 1993-5-17 6945 Butte about 1 1/2 mi n and 2 3/4 mi e of Honcut (about 12 mi se of Oroville, on e side of North Honcut Creek); North Honcut Creek 53 Comment
  SEINET10530333  Isoetes nuttallii Mary Susan Taylor 1984-4-6 Taylor 5399 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC44440  Isolepis cernua Lowell Ahart 1988-5-29 6013 Butte Small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  SEINET10536078  Isopyrum occidentale Mary Susan Taylor 1981-3-24 Taylor 3448 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
  JEPS114387  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  CHSC20505  Juglans californica var. hindsii M. S. Taylor 1975-5-6 559 Butte Ca. 50 ft w of Little Cafeteria, on s side of Big Chico Creek, California State University, Chico. Comment
  CHSC79612  Juncus acuminatus G. F. Hrusa; T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 775 Comment
  JEPS113878  Juncus acuminatus Lowell Ahart 2007-7-7 14263 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
  JEPS87447  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte ca. 3 1/4 mi. n.w. Biggs (on Rice Experiment Station, on s. side of Butte City Hwy., e. of S.P.R.R., w. of Riceton Rd.); Rice Experiment Station 30 Comment
  CHSC116318  Juncus articulatus subsp. articulatus Lowell Ahart 2015-11-18 20666 Butte Marsh like area, on the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 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
  JEPS114976  Juncus balticus subsp. ater Lowell Ahart 2008-6-13 14815 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  RSA0118937  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC106862  Juncus capitatus Lowell Ahart 2011-5-2 17346 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 32 Comment
  CHSC61351  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7101 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  UCD141429  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte east edge of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Oroville Forbestown Highway, west of Forbestown. 2000 Comment
  JEPS113832  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 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
  CHSC30359  Juncus hemiendytus var. hemiendytus J. D. Jokerst; R. A. Schlising 1980-6-16 841 Butte Near Butte Meadows, 0.1 mile south of the jct of Humboldt Rd and Skyway. 1341 Comment
  CHSC44445  Juncus howellii Lowell Ahart 1988-6-29 6095 Butte Along a small seep south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 Comment
  CHSC94400  Juncus howellii Lowell Ahart 2006-8-15 13178 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC95186  Juncus howellii R. D. Fischer; Jenny Marr 2004-9-5 787 Butte Sierra Nevada Mountains, the north-east corner of Butte County and ca. 6 miles north of Butte Meadows and 1 mile north of Humboldt Road along Scotts John Road/creek. 1524 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
  NY247664  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, about 2 miles north and ½ mile east of Honcut. 50 Comment
  JEPS104274  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, ca 130 yd south of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 332 Comment
  JEPS104275  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 344 Comment
  JEPS110156  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 368 Comment
  JEPS122233  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  SD241643  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte Northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence. 271 Comment
  CHSC44831  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1659 Butte Along the edges of the West Branch of the Feather River. Coon Hollow at its west end where forest service rd. 27N74 crosses the river. 1615 Comment
  JEPS98526  Juncus orthophyllus Lowell Ahart 2000-7-11 8566 Butte N side of dirt road, 100 yds N of Lumpkin Ridge Road, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd, road to Fall River, and the County Rd, 4 air mi NE of Feather Falls 1219 Comment
  JEPS117318  Juncus parryi Lowell Ahart 2010-9-28 17258 Butte About 10 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC57161  Juncus tenuis L. P. Janeway 1988-6-14 2773 Butte Ewalt Camp; meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  SBBG121534  Juncus tenuis L. Ahart 2007-6-12 14081 Butte E side of Rockefeller Rd, at the intersection of Bald Rock Rd and Rockefeller Rd, ca. 13 mi NE of Oroville 1011 Comment
  CHSC97203  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  POM202704  Keckiella breviflora subsp. glabrisepala J. H. Morrison s.n. Butte Durham. Comment
  NY786845  Keckiella breviflora var. glabrisepala J. L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609.6 Comment
  NY790166  Keckiella breviflora var. glabrisepala L. Ahart 1980-6-19 2386 Butte Along the edge of Swedes Flat Road, ca. 2.5 miles east of the Bangor-Oroville Highway, near Bangor. 320 Comment
  JEPS95060  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte ca. 8 mi. (air) n.e. Stirling City (ca. 0.25 mi. e. of Table Mountain, on w. side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  UC195387  Kelloggia galioides A. A. Heller 1914-7-22 11582 Butte Little Summit 1463 Comment
  CHSC102712  Kickxia elatine Lowell Ahart 2009-7-3 15991 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  CDA35627  Kickxia elatine J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330073 Butte Chico; Rancho Llano Seco. 0 Comment
  CHSC103990  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  UC9457  Kumlienia hystricula Mrs. R. M. Austin and Bruce March 1898 1891 Butte Butte County Comment
  SEINET10872060  Lactuca scariola var. integrata Mary Susan Taylor 1979-11-11 Taylor 2280 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC74363  Lagophylla glandulosa B. Castro 1998-6-13 790 D Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 80 ft N of creek channel, directly under transmission lines. 85 Comment
  OBI15967  Lagophylla glandulosa Robert F. Hoover 1965-10-16 9719 Butte Deer Crk rd E of Chico Comment
  CAS-BOT-BC341298  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-BC341321  Lagophylla glandulosa Alice Eastwood 1912-8-22 1933 Butte Payne Creek, Lassen Butte Region Comment
  CAS-BOT-BC337909  Lasthenia californica Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  JEPS119499  Lasthenia californica subsp. californica Lowell Ahart 2012-4-9 17834 Butte West of South Rim Trail, south part of Upper Bidwekk Park, about 2 1/4 miles (air) northeast of Chico. Comment
  HSC66353  Lasthenia fremontii M. S. Taylor 1980-3-28 2400 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  UCR227351  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  SEINET12765126  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte About 150 yards west of the Enterprise Boat Ramp, about 1 miles (air) east of Oroville.; 0 850 Comment
  SEINET10940068  Lathyrus nevadensis Mary Susan Taylor 1980-4-18 Taylor 2509 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC213289  Lathyrus sulphureus Frances Brown 1935-4-1 s.n. Butte Near Durham. Comment
  CHSC30819  Lathyrus sulphureus M. S. Taylor; J. D. Jokerst 1980-4-18 2536 Butte On bluffs on e side of Humbug Rd., ca. 2 mi ne of Centerville. 457 Comment
  CHSC863  Lathyrus sulphureus A. Koopman 1929-4-16 Butte U.S. Plant Introduction Garden. 60 Comment
  CAS-BOT-BC321779  Layia fremontii H. E. Brown 1897-4-15 184 Butte Near Clear Creek Comment
  CHSC2831  Layia fremontii David Prall 1965-3-28 16 Butte In field east of Meridian Rd. 8 miles NE of HW. 99E north of Chico. 60 Comment
  CHSC29007  Layia fremontii M. S. Taylor 1980-3-28 2409 Butte Around vernal pools, just e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CHSC3872  Layia fremontii Gerry Carrauthers 1966-3-21 70 Butte Pentz Rd. ca. 15 mi. E. of Clark Rd. Ca. 15 mi. S.E. of city of Chico. Along roadside. Comment
  CHSC65987  Layia fremontii Vernon H. Oswald 1996-4-26 7455 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 NW corner of the north paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC75252  Layia fremontii Jennifer Slater 1997-4-6 7 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 60 Comment
  UC179642  Layia fremontii A. A. Heller 1914-4-14 11292 Butte 8 mi n Oroville Comment
  POM361691  Layia fremontii J. Doty 1969-4-1 620 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  CHSC78401  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near 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
  UCD150365  Lemna minor William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  SD505  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville, local in water in sunny swamp. 1550 Comment
  CHSC107892  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-29 10410 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC50651  Leontodon saxatilis subsp. longirostris Lowell Ahart 1990-5-25 6494 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Area, about 1 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC215734  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near Cohasset Comment
  SEINET516280  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte W side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  UC884242  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC492  Lepidium chalepense V. Holt 1946-4-20 Butte Chico, roadside. 45 Comment
  CHSC46256  Lepidium dictyotum var. acutidens Vernon Oswald 1989-4-20 3744 Butte Gray Lodge Wildlife Area, s side of Rutherford Rd and w side of the road to Parking Areas 12 and 13. 19 Comment
  CAS-BOT-BC89875  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC4516  Lepidium nitidum C. Glascock 1965-3-2 271 Butte At side of Chico Canyon Rd. ca. 1/2 mi. from its intersection with E 8th St., Chico. Comment
  CDA34697  Lepidium strictum L. Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street in Gridley. Comment
  SEINET10874435  Lepidium strictum Lowell Ahart 1983-4-10 Ahart 3929 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC66176  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7662 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 S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC83005  Leptochloa fusca subsp. fascicularis Lowell Ahart 2002-9-7 9929 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 Comment
  CHSC83714  Leptosiphon ciliatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 460 Butte In vernal pools below the high water mark. Ca 1.0 mi NE of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC30791  Leptosiphon filipes M. S. Taylor 1980-5-27 2677 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC39777  Leptosiphon parviflorus William Askea 1981-4-24 20 Butte Ca. 3 km s of Big Chico Creek and 5.4 km e of Highway 99, 5 km e of Chico. 230 Comment
  CAS-BOT-BC341742  Lessingia nana Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  JEPS115863  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Ch 398 Comment
  CAS-BOT-BC341780  Lessingia nemaclada Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile north-east of Oregon City 400 Comment
  SJSU5693  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  POM196087  Leucophysalis nana H. F. Copeland 1929-6-9 1228 Butte Jonesville. 1524 Comment
  CHSC43878  Leucothoe davisiae L. P. Janeway 1987-6-13 2218 Butte Along Concow Rd, just SW of jct with road to Five Corners and Stirling City. 1188 Comment
  JEPS46191  Leucothoe davisiae Duncan Dunning Butte near Inskip (Lassen National Forest); Lassen National Forest Comment
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  HSC73103  Lewisia rediviva Mike Stewart 1981-4-12 Butte Table Mtn., W side of Cherokee Rd., 6 mi. N of intersection with Table Mtn. Blvd. 417 Comment
  CHSC106058  Ligustrum lucidum Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17041 Butte Golf Course, about 20 yards west of the club house, Upper Bidwell Park, about one mile east of the east edge of Chico. 89 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
  UC1609486  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n Honcut (on w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby 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
  SD708  Lilium pardalinum subsp. shastense E. B. Copeland 1930-7-18 614 Butte Jonesville, along creeks and in damp woods. 456 Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  SEINET10495210  Limnanthes alba Mary Susan Taylor 1978-5-7 Taylor 1600 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC33850  Limnanthes douglasii subsp. rosea R. E. Preston 1979-4-19 14 Butte Northernmost Butte County. Ditches along Cana-Pine Creek Road nw of Singer Creek. 56 Comment
  UC1748332  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3241 Butte N of Hwy. 32 across from church 76 Comment
  CHSC32591  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1981-3-21 1257 Butte Initial slopes delineating the beginning of the foothills, ca. 0.5 mi N of Horseshoe Lake. Comment
  POM86002  Limnanthes striata C. C. Bruce 1897-06 s.n. Butte [No location information on label.] Comment
  RSA716800  Limnophila L. Ahart 2005-9-13 12368 Butte 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 Road. 29 Comment
  SEINET10496794  Linanthus ciliatus Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4645 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC3959  Linanthus dichotomus M. Lee 1967-4-10 18 Butte Along roadside 2 1/2 mi. E. of Hwy 99E on Pentz Rd. Pentz. 136 Comment
  CHSC49844  Linanthus dichotomus Vernon Oswald 1990-4-4 4150 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
  JEPS117685  Linanthus harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  JEPS120027  Lindernia dubia Lowell Ahart 2012-10-20 18512 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA41688  Lindernia dubia var. anagallidea T. C. Fuller 1976-8-1 20164 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  JEPS88435  Lindernia dubia var. anagallidea Vernon H. Oswald and Lowell Ahart 1996-7-22 8083 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, in the NW corner of Tract 9.1., Sanctuary I, a unit managed for watergrass (Echinochloa). 30 Comment
  CHSC40917  Linum bienne Lowell Ahart; John Thomas Howell 1980-4-30 2130 Butte Along the edge of Swedes Flat Road, about 2 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC55620  Lipocarpha L. P. Janeway 1987-6-5 2142 Butte Border area of small pool, near confluence of Ram Creek and French Creek. 609 Comment
  UC1562290  Lipocarpha micrantha Lowell Ahart 1990-7-4 6547 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (along McCabe Creek); , McCabe Creek 243 Comment
  SEINET12028399  Lithocarpus densiflorus M. Hayes, Warner 1977-1 67 Butte along Hwy-32 above Forest Ranch,exactly 21.4mi from Hwy-99 overpass in Chico 701 Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  CHSC96642  Lithophragma parviflorum var. trifoliatum Lowell Ahart 2007-3-28 13602 Butte By Jurassic-Triassic metavolcanic rocks, Peter Ahart Ranch, about 2 1/4 miles north and 2 1/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CAS-BOT-BC428443  Lithophragma trifoliatum Forest Sheehan 1970-4-7 s.n. Butte Table Mt. near Oroville Comment
  CAS-BOT-BC428446  Lithophragma trifoliatum Flower Show 1928-4-1 s.n. Butte Cherokee School Comment
  SEINET10870096  Lithospermum californicum Mary Susan Taylor 1980-5-8 Taylor 2603 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC23721  Lobularia maritima L. V. Ritter 1969-4-12 144 Butte Ca 50 yds. s of Sandy Gulch, ca 200 yds. e of Longfellow Bridge Chico. 76 Comment
  CAS-BOT-BC342380  Logfia gallica Lowell Ahart 1988-5-12 5998 Butte 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
  CHSC35657  Lolium multiflorum R. E. Preston 1982-4-22 245 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  SEINET241452 Image available Lolium multiflorum A. A. Heller 11420 Butte 8 miles north of Oroville 2 Comment
  UCR187080  Lomatium Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 013 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 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
  JEPS14510  Lomatium dasycarpum subsp. tomentosum Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5604 Butte below bridge on Nelson Bar rd. (just above N. Fork Feather R.) 198 Comment
  SEINET10454499  Lomatium marginatum Mary Susan Taylor 1981-4-5 Taylor 3490 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  JEPS115616  Lomatium utriculatum Lowell Ahart 2009-5-15 15675 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 235 Comment
  POM220124  Lonicera conjugialis H. F. Copeland 1928-8-18 460 Butte Neighborhood of Jonesville. 1524 Comment
  CHSC83000  Lonicera hispidula Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CHSC55489  Lonicera interrupta L. P. Janeway 1991-6-8 3998 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. At edge of little-used dirt road. 411 Comment
  POM46731  Lonicera interrupta A. A. Heller, H. E. Brown 1902-5-14 5551 Butte Berry Canyon (near Clear Creek) Comment
  SEINET10970287  Lotus Mary Susan Taylor 1982-6-24 Taylor 4734 A Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  UC726261  Lotus denticulatus A. A. Heller 1940-5-13 15616 Butte 3 mi w Chico (along State Highway 32) 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
  RSA169437  Lotus humistratus L. S. Rose 1963-6-2 63076 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  SEINET12164066  Lotus micranthus Unknown 1980-1 19 Butte W side of rd ca 5miN of jct of Cheroke Rd and Nelson Rd. Oroville Quadrangle. Sec17 T20N R4E 366 Comment
  SEINET6655536  Lotus nevadensis Lowell Ahart 1985-5-31 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Yellow Pine Forest.; 0 274 Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  UC1594570  Lotus nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte about 0.5 mi n Flea Valley (e of intersection, about 4.5 air mi ne of Concow Reservoir) 1158 Comment
  JEPS115192  Lotus purshianus var. purshianus Lowell Ahart 2009-6-19 15930 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 379 Comment
  UC1129010  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  UC204726  Lotus purshianus var. purshianus A. A. Heller 11615 Butte border of Chico meadows Chico Comment
  SEINET10452013  Lotus scoparius Lowell Ahart 1985-5-31 Ahart 5037 Butte About 25 feet above the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Launch Area, about 1 mile north-east of Oroville. Comment
  SEINET12161432  Lotus subpinnatus D. G. Bendix 1978-1 12 Butte 50 m s of Lookout Point, 7kmW of Paradise 300 Comment
  POM27894  Lotus wrangelianus C. C. Bruce 1897-04 2089 Butte Chico Comment
  CHSC112876  Ludwigia decurrens Evan Padgett 2014-8-28 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC42708  Ludwigia palustris Lowell Ahart 1987-6-9 5732 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
  JEPS113700  Ludwigia palustris Lowell Ahart 2007-7-8 14275 Butte On the north 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
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SEINET10452616  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  POM23778  Lupinus albifrons var. eminens C. C. Bruce 1897-04 2028 Butte Yankee Hill. Comment
  UC82158  Lupinus argenteus Mrs. R. M. Austin July 1896 706 Butte Colby Comment
  CHSC36149  Lupinus bicolor C. W. Dawson 1978-4-2 13 Butte 2.1 mi. ne of junction of Cal. Hwy. 99 and Pentz Rd. se side of roadway. 60 Comment
  CHSC3568  Lupinus bicolor var. tridentatus R. D. Briggs 1966-3-5 32 Butte Three miles due north of Oroville, on hwy #70. Comment
  UCD107753  Lupinus formosus L. E. Hazeltine 1916-7-16 18 Butte Appleton. Comment
  CHSC50997  Lupinus lepidus var. confertus Lowell Ahart 1990-7-22 6576 Butte On the west side of Concow Road, Concow. 640 Comment
  UCD108702  Lupinus microcarpus var. densiflorus A. A. Heller 1915-5-4 11866 Butte two miles east of Durham. Comment
  POM253156  Lupinus nanus subsp. latifolius A. A. Heller 1938-4-14 15034 Butte Summit of Table Mountain. 610 Comment
  CHSC38507  Lupinus nanus var. apricus Vernon Oswald 1983-3-23 203 Butte Upper Bidwell Park, Chico near the N boundary between the Omicron Enclosure and the low swale to the east. 88 Comment
  CHSC30293  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  JEPS117212  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  RSA754855  Lupinus nanus var. vallicola L. Ahart 2009-4-26 15618 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  SEINET10484149  Lupinus nanus var. vallicola Mary Susan Taylor 1980-5-27 Taylor 2720 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  CHSC30741  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  SEINET10973223  Lupinus vallicola Mary Susan Taylor 1981-5-21 Taylor 3762 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  SEINET10491011  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4399 Butte Pulga sw quad. Corolla blue. N side of hiway 70, .5 mi w of arch rock tunnel, Ca 25 air mi ne of oroville. In granite gravel; with acer macrophyllum. 472 Comment
  SEINET10870614  Lupinus vallicola subsp. vallicola Parker 1981-4-21 Parker 10 Butte Corolla bright blue, with pale spot on banner. Large population, ca 5 mi s of Pentz rd, 9.0 km e of hwy 70, ca 17 km ssw of paradise. Road drainage area. Soil a sandy gravel overlying rock. 160 Comment
  CHSC41289  Luzula cascadensis S. C. Morey 1983-7-21 496 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCD142129  Luzula comosa M. Vincent 1964-4-11 566 Butte Cherokee Road, beside the Campbell ranch 1 mile from Cherokee (Oroville Rd.). Comment
  RSA774132  Luzula comosa var. comosa L. Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  SBBG128104  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte W edge of a 10 acre meadow, ca. 50 yards E of the poor dirt rd, ca. 20 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  CHSC4296  Luzula comosa var. subsessilis R. L. Smith 1966-5-5 Butte US Plant Introduction Station. 5 mi sw of Chico. Comment
  CHSC32365  Luzula macrantha J. D. Jokerst 1980-4-7 563 Butte E. of jct. of Upper Rocky Honcut Cr., and Swedes Flat Rd., (E of the town of Rackerby) SE of Oroville 10 mi. Comment
  UC1609042  Luzula parviflora Lowell Ahart 1993-7-23 7108 Butte about 6 air mi ne of Feather Falls (about 1/8 mi s of campgrounds on the large gravel bar along Fall River); s of Fall River 1036 Comment
  SEINET10537470  Lychnis coronaria Mary Susan Taylor 1978-7-21 Taylor 1821 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC51222  Lycopus americanus Lowell Ahart 1984-8-19 4783 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 30 Comment
  CHSC752  Lycopus americanus V. Holt; M. Underhill 1952-7-9 Butte Dodge Lands. 56 Comment
  JEPS94765  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC112605  Lythrum portula Lowell Ahart 2013-9-20 19060 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
  UC1562302 Image available Lythrum salicaria Lowell Ahart 1990-7-22 6575 Butte Palermo, on bottom of Wyman Ravine, on e side of Lincoln Boulevard Wyman Ravine; Palermo, , Lincoln Boulevard 45 Comment
  JEPS98931  Madia citriodora Bruce G. Baldwin, Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, S side of Big Chico Creek, just above police pistol range 91 Comment
  SEINET11601352 Image available Madia elegans A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (near Clear Creek) Comment
  CHSC116988  Madia exigua Lowell Ahart 2016-6-4 20936 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC43623  Madia gracilis Vernon Oswald 1985-5-28 1780 Butte Service road leading to Bidwell Bar Bridge and joining Oroville-Quincy Hwy 0.2 mi s of the bridge. 304 Comment
  JEPS115868  Madia gracilis Lowell Ahart 2009-5-23 15722 Butte On the north 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
  JEPS119875  Madia gracilis Lowell Ahart 2012-6-2 18129 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  SEINET10474812  Madia gracilis Mary Susan Taylor 1977-8-17 Taylor 1458 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  UCD134332  Madia gracilis Collector Unknown Date Unknown 12816 Butte Butte Meadows. Comment
  SEINET10474828  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2672 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
  SEINET10965685  Magnolia grandiflora Mary Susan Taylor 1974-5-20 Taylor 253 Butte Chico. Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CHSC116212  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte On the northwest side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  UC1609223  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  CHSC84639  Malus sylvestris Bryan Gabbard 2002-4-30 56 Butte Paradise Lake. Found two feet from the water's edge next to the path. Comment
  CHSC46834  Malva parviflora R. A. Schlising 1986-11-28 4510 Butte Gray Lodge Waterfowl Management Area. 18 Comment
  JEPS119502  Malva parviflora Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SEINET11985464  Marah fabacea J. K. Johnson 1978-1 10 Butte E side of Sacramento River, 50 yds N of Big Chico Creek, 6 mi WSW of Chico 40 Comment
  CHSC34446  Marah fabacea var. agrestis R. E. Preston 1979-4-19 15 Butte 75 yds nw of Singer Creek, northernmost Butte County. 56 Comment
  CHSC13931  Marah watsonii J. DiVittorio 1974-4-30 28 Butte Ca. 3.5 mi ne of Cohasset on Cohasset Hwy, and ca. 100 yds w side of the road. 609 Comment
  UC196259  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  SEINET10448097  Marah watsonii Mary Susan Taylor 1980-4-6 Taylor 2437 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  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
  CAS-BOT-BC348279  Matricaria occidentalis Lowell Ahart 1977-4-25 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC422639  Meconella californica W. R. Ernst 1958-3-27 215 A Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  CAS-BOT-BC422641  Meconella californica W. R. Ernst 1958-3-27 215 Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  JEPS115540  Medicago arabica Lowell Ahart 2009-5-15 15712 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SEINET12155170  Medicago hispida P. L. Ricker 1912-1 3963 Butte Chico Comment
  CHSC31835  Medicago lupulina L. Ahart 1977-6-3 1408 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42528  Medicago lupulina Lowell Ahart 1987-5-6 5524 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
  JEPS115379  Medicago lupulina Lowell Ahart 2009-6-3 15834 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
  JEPS119788  Medicago lupulina Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  JEPS115301  Medicago polymorpha Lowell 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 67 Comment
  UCD80307  Medicago polymorpha CNPS SN Foothill Team 2005-5-4 SNNR 0016 Butte City of Chico, Upper Bidwell Park, in the flood zone of Chico Creek. 81 Comment
  UCD107843  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CDA38818  Medicago praecox L. Ahart 2012-4-9 17836 Butte Around the edged of a small vernal pool, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CDA43101  Medicago praecox L. P. Janeway 2013-3-21 11086 Butte Cascade Range Foothills.; Upper Bidwell Park, Chico; along the well-developed steep un-official trail +/- under the upper powerlines, connecting Upper Trail to North Rim Trail. Comment
  SEINET10452592  Medicago praecox Lowell Ahart 1983-4-10 Ahart 3924 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC3341  Melaleuca nodosa Robert L. Smith 1966-3-1 33 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CAS-BOT-BC271131  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi S of Lomo, 2.3 mi S of ford over Cedar Creek 1219 Comment
  CAS-BOT-BC269385  Melica californica L. P. Janeway 1995-6-19 4797 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge 1097 Comment
  CHSC6103  Melica californica A. R. Jaegel 1968-4-24 137 Butte On cutbank, 2 mi e of Centerville on Humbug Rd. Comment
  UCD80579  Melica californica CNPS SN Foothill Team 2005-3-30 SNFN 0028 a Butte CDFG North Table Mountain Wildlife Area, at the northern tip of the Y-shaped ravine that bisects the reserve. 369 Comment
  SEINET10926809  Melica californica A. Arthur Heller 1918-5-5 Heller 13012 Butte Near Magalia in the yellow pine and oak belt (Q. kelloggii) on serpentine, where Cupressus macnabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. 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
  CHSC101464  Melica geyeri L. P. Janeway; Sarah Starkey 2009-7-13 9855 Butte Northern High Sierra Nevada. Northwest side of Concow Road 2.8 air km northeast of upper end of Concow Reservoir, 1.5 road km northeast of Cirby Creek Road. 823 Comment
  CHSC47045  Melica stricta R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4641 Butte NE part of county, Snow Mountain ridge. 2072 Comment
  CHSC49560  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  RSA700278  Melica subulata L. Ahart 2004-7-23 11300 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River. About 1.5 miles (air) southeast of Butte Meadows. 1457 Comment
  CHSC99646  Melica torreyana H. Koeth 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). 471 Comment
  UCD89083  Melica torreyana August L. Hormay 1929-6-24 s.n. Butte East of Chico, Deer Creek, near Murphy. Comment
  CHSC102626  Melilotus albus Lowell Ahart 2009-6-19 15934 Butte West of the trail, on the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC36549  Melilotus albus L. Ahart 1982-7-10 3670 Butte On bottm of a dry duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CDA42908  Melissa officinalis L. Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC38474  Melissa officinalis Vernon Oswald 1983-7-15 871 Butte Upper Bidwell Park, Chico, beside the trail along the n side of Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC97780  Melissa officinalis L. P. Janeway 2007-8-12 9157 Butte Northern High Sierra Nevada. Along old Berry Creek Road 2.0 road km north of Oroville-Quincy Hwy; 1.4 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 384 Comment
  CHSC109759  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS115150  Mentha arvensis Lowell Ahart 2009-11-19 16543 Butte North of the rose thicket, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC48487  Mentha pulegium Vernon Oswald 1987-6-12 2995 Butte East side of the Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC94031  Mentha pulegium R. D. Fischer 2005-7-18 736 Butte Sierra Nevada foothills, off Hwy. 32, on 10 Mile House Road in Bidwell Park about 4 miles east of Chico. Plants growing in moist meadow at edge of Big Chico Creek riparian near upper end of park property. 213 Comment
  CHSC58925  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  JEPS119563  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC428754  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap 350 Comment
  CAS-BOT-BC428760  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2043 Butte Chico Canon [Canyon] Comment
  CHSC21148  Micranthes californica M. S. Taylor 1975-3-10 416 Butte On s side of Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC1674  Micranthes integrifolia L. Oliver; D. Sloan 1935-2-23 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC25283  Micranthes oregana M. S. Taylor 1977-7-15 1406 Butte In ne corner of Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  CHSC31088  Micropus californicus var. californicus Roberta A. Boer 1980-4-13 5 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC41122  Micropus californicus var. californicus Sandra C. Morey 1978-4-10 18 Butte Highway 32, ca. 4.7 mi e of junction with Highway 99 at Chico. 320 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
  UCD80099  Micropus californicus var. californicus CNPS SN Foothill Team 2005-4-13 SNFN 0079 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 30 m from the western boundary and 60 m from the southern boundary. 85 Comment
  CHSC48183  Microseris douglasii subsp. douglasii Vernon Oswald 1988-4-28 3288 Butte Hwy 99 along the Thermalito Afterbay at Hwy 162 (west). Between the highway and the afterbay. 33 Comment
  SEINET10837198  Microsteris gracilis Mary Susan Taylor 1975-3-10 Taylor 409 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  UCR188704  Mimulus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  UC103641  Mimulus aurantiacus var. grandiflorus Mrs. R. M. Austin 235 Butte Comment
  UC660011  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  JEPS117290  Mimulus breweri Lowell Ahart 2010-9-21 17207 Butte 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
  CHSC43856  Mimulus glaucescens L. P. Janeway 1988-2-21 2586 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  JEPS50780  Mimulus glaucescens Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9282 Butte just above Pulga Bridge; North Fork Feather River Canyon Comment
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Mar 15 2006
  UC1778563  Mimulus glaucescens S. E. Schoenig 1998-7-5 98 -76 Butte Wet seep. E roadside of Hwy 32, ca. 1mi N of road to Butte Meadows. Vicinity of Lomo. 1097 Comment
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Aug 31 2012
  UCD122718  Mimulus glaucescens F. J. Fuller 1982-4-18 20 Butte ca. 0.5 mi sw of Hwy 32 on Crown Pt Rd, 11 mi nw of Chico. 548 Comment
  SEINET10570229  Mimulus glaucescens Lowell Ahart 1985-5-6 Ahart 4934 Butte Bottom of Lindo Channel, about 1/10 mile east of Longfellow Ave., Chico. Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  RSA60037  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  SEINET12318321  Mimulus guttatus R. T. Retuta 1978-1 5 Butte ca 0.5 mi SE of Cherokee Rd, ca 5 mi of Oroville, North Table Mountain Comment
  SEINET8340981  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  RSA107407  Mimulus layneae L. S. Rose 1955-6-14 55096 Butte Magalia. 732 Comment
  UC726348  Mimulus microphyllus A. A. Heller 1938-4-14 15028 Butte summit Table Mountain 304 Comment
  CHSC33113  Mimulus moschatus M. S. Taylor 1981-5-15 3747 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70; near shady creek area. 1158 Comment
  CHSC44717  Mimulus moschatus R. Banchero 1980-6-23 261 Butte Along Eagle Gulch Rd 1.8 mi N of its jct with Laporte Rd, 1.6 mi SW of Sly Reservoir. 1066 Comment
  RSA0116252  Mimulus moschatus Lowell A. Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  JEPS117422  Mimulus primuloides subsp. primuloides Lowell Ahart 2010-9-28 17255 Butte On damp black soil, about 10 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  UC103708  Mimulus torreyi D. Cleveland 1882-7-14 Butte Sutton House Comment
  RSA717286  Mimulus tricolor L. Ahart 2005-5-28 11825 Butte 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
  RSA636047  Minuartia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8122 Butte Table Mountain. Comment
  CDA11950  Minuartia douglasii G. F. Hrusa, J. Hart 1989-4-15 5920 Butte Sierra Nevada; North Table Mountain, Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC219943  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CAS-BOT-BC219946  Monardella breweri subsp. lanceolata John Thomas Howell 1962-6-16 37611 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 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
  CHSC112680  Monardella sheltonii Lowell Ahart 2013-7-1 18819 Butte Edge of a dry meadow, about 30 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC44928  Monardella sheltonii Lowell Ahart 1988-7-28 6137 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC93867  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS113188  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  SD130983  Monochoria vaginalis Lowell Ahart 1981-9-19 3193 Butte Butte County Rice Experiment Station 35 Comment
  UC392218  Montia chamissoi E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC70812  Montia linearis B. Castro 1995-5-18 571 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow, in very moist soil just downslope from spring. 1109 Comment
  CDA13311  Montia parvifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13157 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS 23N60. 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
  CHSC103222  Morus alba L. P. Janeway; B. Castro 2010-5-8 9973 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Yahi Trail about 15 m north of Big Chico Creek, 380 m west of the up-per high power lines. 88 Comment
  JEPS110334  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC42438  Muhlenbergia asperifolia Lowell Ahart 1987-5-27 5708 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
  CHSC105668  Muhlenbergia filiformis Lowell Ahart 2010-9-21 17221 Butte 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
  CHSC51290  Muhlenbergia filiformis Lowell Ahart 1990-10-21 6636 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
  CHSC61372  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  RSA769226  Muhlenbergia filiformis L. Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 270 Comment
  CAS-BOT-BC275344  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River, Oroville 53 Comment
  CHSC86110  Myosotis discolor L. P. Janeway; John Hunt 2003-4-22 7762 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 Comment
  CAS-BOT-BC83262  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  SEINET10536217  Myosurus minimus subsp. apus Mary Susan Taylor 1980-3-28 Taylor 2401 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  JEPS120717  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  CAS-BOT-BC456161  Najas guadalupensis Herbert L. Mason; Verne Grant 1946-8-15 13053 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Gam Refuge, Butte Sink Comment
  UCD19361  Najas guadalupensis subsp. guadalupensis E. Dean; with J. Ditomaso and E. Healy 2001-8-20 852 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  RSA4126  Nama lobbii E. B. Copeland 1930-6-27 s.n. Butte Jonesville. 1600 Comment
  UCD87723  Nassella cernua P. B. Kennedy 1914-5-1 4754 Butte Buttte County: 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
  CHSC54376  Nassella pulchra M. Bailey 1991-4-14 562 Butte Butte College campus. On foothills se of Steamboat Rock, in the vicinity of a drainage near the Butte Campus boundary. 144 Comment
  CAS-BOT-BC60376  Nasturtium officinale Lowell Ahart 1989-5-31 6332 Butte North of the end of Truex Road, near Lake Oroville, about 0.25 mile NW of the West Branch Bridge across Lake Oroville. 304 Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC11950  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville. 1550 Comment
  POM183171  Navarretia divaricata H. F. Copeland 1930-7-18 1334 Butte Jonesville. 1524 Comment
  SEINET10496821  Navarretia divaricata Mary Susan Taylor 1978-7-19 Taylor 1764 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC20514  Navarretia intertexta M. S. Taylor 1975-6-25 799 Butte Above dam area, ca. 1/2 mi n of Richardson Springs Hotel, ca. 7 mi ne of Chico. 243 Comment
  CHSC36703  Navarretia intertexta D. H. Ikeda 1980-5-21 384 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  SEINET10837199  Navarretia intertexta Mary Susan Taylor 1975-6-25 Taylor 799 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  UC221748  Navarretia leucocephala Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2081 Butte near Chico Comment
  CHSC26823  Navarretia tagetina M. S. Taylor 1978-5-7 1597 Butte In vernal pools, on e side of Williams Rd, on Butte College campus, ca. 1/2 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  UC856894  Navarretia tagetina A. A. Heller 1914-5-11 11383 Butte 8 mi n Oroville Comment
  UC856899  Navarretia viscidula A. A. Heller 1914-5-22 11427 Butte about 5 mi n Chico (on the Richardson Springs road) Comment
  RSA0006287  Nemacladus montanus E. Brooks s.n. Butte Enterprise. Comment
  CHSC40032  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Moist woodland soil along Chico Creek about six miles east of Chico. Comment
  CHSC96228  Nemophila heterophylla R. Fischer 2006-3-17 988 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 231 Comment
  RSA3796  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Along Chico Creek about six miles east of Chico. Comment
  CHSC50328  Nemophila parviflora var. austiniae Vernon Oswald 1990-6-4 4283 Butte Logging road just south of Humbug Summit and Cold Springs, ca. 0.25 mile northwest of Humbug Rd, on a branch of Willow Creek. 1950 Comment
  CHSC39077  Nemophila pedunculata R. A. Schlising 1981-4-11 4023 Butte E side of Chico, between Highway 32 and Humboldt Road. 76 Comment
  CHSC45932  Nemophila pedunculata Lowell Ahart 1975-3-18 713 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  CHSC115431  Nerium oleander Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  CDA42978  Nicotiana acuminata var. multiflora L. Ahart 2013-11-18 19279 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. Comment
  RSA0060137  Nicotiana quadrivalvis L. Ahart 2010-9-24 17234 Butte Near the SW edge of the Golf Course, along trail form the end of Centennial Ave. to the foot bridge across Big Chico Creek, Bidwell Park. 91 Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  RSA0012849  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  UC398696  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi. n. Chico (on Richardson Springs rd.) Comment
  JEPS28172  Odontostomum hartwegii A. A. Heller 1938-5-22 1510 a Butte near airport n.e. of Chico Comment
  CHSC93086  Olea europaea L. P. Janeway 2006-2-5 8555 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; between North Rim Trail and the northern boundary fence, 650 m northeast of the upper high-power lines, about 50 m southeast of the fenceline. 283 Comment
  CHSC32360  Oreostemma alpigenum var. andersonii J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 852 Butte Chico Meadows in the community of Butte Meadows, ca 1.1 mi N of the jct. of Humboldt Rd and the Skyway along Scout Rd. 1341 Comment
  CHSC1169  Orobanche vallicola J. Wakeman 1962-8-12 Butte Bank of Chico Creek, Bidwell Ave. near Rodgers. 54 Comment
  RSA325143  Orthocarpus attenuatus M. S. Taylor, Vernon H. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 airmiles NE of Chico. Comment
  RSA0006075  Orthocarpus bicolor A. A. Heller, H. E. Brown 1902-5-10 5519 Butte Berry Canyon (Near Clear Creek). Comment
  NY90836  Orthocarpus bidwelliae A. E. Bidwell s.n. Butte Near Chico. Comment
  SEINET10549654  Orthocarpus campestris Mary Susan Taylor 1979-5-6 Taylor 1999 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET10549691  Orthocarpus lacerus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5393 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  UCSB36279  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte collected in a ditch between Service Road 33 and Service Road 34 at Lattermore portion of California Rice Experiment Station, between Briggs and Richvale Lattermore, Briggs and Richvale Comment
  JEPS114193  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west side Table Mountain Blvd bridge. Comment
  JEPS115575  Oxalis corniculata Lowell Ahart 2009-6-12 15841 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC31776  Oxalis laxa L. Ahart 1975-5-12 765 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SD71022  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 Butte Serpentine area, Magalia. 730 Comment
  CHSC45339  Paeonia brownii Vernon Oswald; Lowell Ahart 1987-5-14 2900 Butte Ca. 2.75 mi ne of Jonesville on the road paralleling Scotts John Creek, 1.9 mi n of the road connecting Humboldt and Humbug Roads. Common on the edge of an alder thicket bordering the creek. 1828 Comment
  JEPS94729  Panicum acuminatum var. acuminatum Lowell Ahart 1998-7-1 8019 Butte about 7 air mi n Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC253895  Panicum rigidulum John Thomas Howell 1961-9-22 36714 Butte Bank of Feather River, Oroville 53 Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  CHSC6595  Papaver somniferum G. Nielson 1968-4-20 Butte Growing at 5th st. and Salem, Chico. 59 Comment
  JEPS104650  Parentucellia viscosa Lowell Ahart 2003-6-15 10284 Butte Peter Ahart Ranch, ca 1 1/2 mi n and 1 2/3 mi e of Honcut, ca 12 mi se of Oroville. 42 Comment
  CHSC8569  Parthenocissus quinquefolia M. MacArthur 1968-6-12 369 Butte On wall on N side of LS building, Chico State College campus. 60 Comment
  SEINET10836216  Paspalum urvillei Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4049 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
  CHSC42058  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville. 609 Comment
  CHSC73765  Paxistima myrsinites B. Castro 1997-6-13 737 Butte Mtn House Proposed SIA. Ca 1.5 air mi NE of Brush Creek and 0.4 air mi ESE of Mtn. House, where Mtn House Creek crosses under USFS Rd 22N54. On E side of road, in depression by creek. 1051 Comment
  CHSC50424  Pectiantia breweri Vernon Oswald; Lowell Ahart 1990-6-20 4302 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  CHSC36083  Pectocarya pusilla R. Schlising; J. D. Jokerst 1981-4-15 4032 Butte E and S of Palermo, along Swedes Flat Road and Lower Honcut Creek. Comment
  CHSC40767  Pectocarya pusilla Ahart; Jokerst 1985-5-10 4960 Butte In the road gutter, along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC24781  Pedicularis densiflora D. E. Hale 1976-4-10 14 Butte On e side of Vilas Rd - Ponderosa Rd intersection, ca. 1.2 km e from Vilas Rd - Cohasset Hwy intersection. 830 Comment
  SEINET12326934  Pedicularis densiflora Unknown 1974-1 10 Butte On Cohasset road 2.7 mi N of Monk's Store, Cohasset 856 Comment
  CHSC4051  Pellaea andromedifolia J. W. Cherry 1967-3-23 Butte Along north bank of Big Chico Creek, directly s. of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  CHSC50539  Pellaea breweri Vernon Oswald; Lowell Ahart 1990-6-20 4310 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1962 Comment
  CHSC31463  Pellaea mucronata M. S. Taylor 1981-1-5 3369 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  SEINET10834168  Pellaea mucronata Mary Susan Taylor 1980-4-18 Taylor 2524 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  POM44122  Penstemon azureus subsp. azureus C. C. Bruce 1898-05 2412 Butte Forest Ranch Comment
  RSA712953  Penstemon azureus var. azureus L. Ahart 2006-5-10 12618 Butte 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 Burdees bar, about 2 1/2 miles (air) southwest of Pulga. Comment
  UC885814  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 25 mi from Oroville (on the Feather River Highway); Feather River Highway, 25 mi from Oroville Comment
  SD4638  Penstemon deustus E. B. Copeland 1931-6-11 690 Butte Jonesville, on dry cliffs 1600 Comment
  CHSC26686  Penstemon gracilentus M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1485 Butte At Humboldt Summit at Butte-Tehama County Line, ca. 150 ft w of Old Humboldt Rd, on Butte side. 2133 Comment
  RSA0045598  Penstemon laetus subsp. leptosepalus Lowell Ahart 2011-7-9 17570 Butte About 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC107592  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest 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. 967 Comment
  CHSC44708  Penstemon laetus var. leptosepalus R. Banchero 1980-6-19 255 Butte Along Concow Rd 1.7 mi N of its jct with Hwy 70, 0.7 mi N of the town of Concow. 524 Comment
  CHSC71655  Penstemon laetus var. leptosepalus Vernon H. Oswald; Lowell Ahart 1998-8-11 9473 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC97014  Penstemon laetus var. leptosepalus L. P. Janeway 2007-6-19 9063 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
  POM195088  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral. 1646 Comment
  CAS-BOT-BC245683  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  JEPS100689  Penstemon personatus Dean Wm. Taylor, Robin Fallscheer 1995-8-6 15382 Butte 1.5 mi SW of Bald Mt. Summit; Lassen National Forest, Keyser Creek 1584 Comment
  CAS-BOT-BC239448  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  RSA401866  Penstemon speciosus M. M. Boney 1897-1 s.n. Butte [No location information provided.] Comment
  JEPS14291  Pentachaeta alsinoides Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5608 Butte along Oroville-Concowroad 2.8 mi below (and s of) junction with Yankee Hill road 373 Comment
  CAS-BOT-BC71563  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte about 1/4 mile south of Cox Lane, east of the pole line tower, about 3 1/2 miles northeast of Honcut 100 Comment
  CHSC3982  Pentagramma triangularis E. P. Parreno 1967-2-20 Butte Salmon Hole. Comment
  UCD137761  Pentagramma triangularis M. S. Taylor 1980-4-1 2425 Butte south side of Butte Creek, ca. 0.25 mile down stream from Honey Run Covered Bridge, ca. 6 miles east of Chico. 182 Comment
  CHSC33902  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-15 3741 Butte Both sides of rd 22N92 between its junction with 23N00.1 and West Branch French Creek, ca. 1.5 air mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 929 Comment
  CHSC92455  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
  CAS-BOT-BC77136  Pentagramma triangularis subsp. semipallida Lowell Ahart 1975-3-7 s.n. Butte Along road 1/2 mile E. of the Ponderosa Dam on the South Fork of the Feather River, north of Forbestown. Comment
  JEPS113226  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  UC1390031  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-18 5993 Butte 2 mi s Berry Creek Comment
  CHSC40234  Perideridia lemmonii Vernon Oswald 1985-6-15 1836 Butte Black Bart Rd., ca. 1.5 mi se of Lumpkin Rd. 655 Comment
  JEPS50772  Perideridia oregana Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9289 Butte on Feather River Hwy about 1 mi n beginning of grade (just e of Messilla Valley) 304 Comment
  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
  CHSC40239  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 a Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd at the W. Branch of the Feather R. 1615 Comment
  CHSC64033  Perideridia parishii subsp. latifolia S. C. Morey 1983-9-17 750 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC74059  Perideridia parishii subsp. latifolia B. Castro 1998-7-28 815 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. 929 Comment
  CHSC43266  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC38691  Persicaria maculosa Vernon Oswald 1983-5-8 452 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CAS-BOT-BC419178  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte Hills 8 miles north of Oroville. Along Dry Creek about 5 miles south of Pentz Comment
  CHSC110392  Persicaria punctata Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC72252  Persicaria punctata Lowell Ahart 1998-9-11 8055 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC39947  Phacelia cicutaria Lowell Ahart 1984-4-4 4541 Butte Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. 50 Comment
  UC175561  Phacelia cicutaria var. cicutaria A. A. Heller 1913-4-5 10709 Butte above Oroville (hills on n side of river); Feather River Comment
  RSA88080  Phacelia corymbosa J. T. Howell 1951-6-26 27522 Butte Near Pulga. 366 Comment
  RSA133614  Phacelia egena L. R. Heckard, J. R. Sweeney 1953-4-24 341 Butte Feather River Highway about 12 miles northeast of Oroville. 152 Comment
  UCR80229  Phacelia racemosa H. F. Copeland 1931-6-9 1538 Butte Jonesville, near Jones Creek 1529 Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CHSC75338  Phalaris lemmonii Lowell Ahart 1999-5-21 8069 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 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
  SEINET10482912  Philadelphus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5508 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  SJSU7853  Phoradendron bolleanum F. S. Gereb 1968-5-4 88 Butte above Paradise Reservoir, near Paradise 609 Comment
  CHSC33801  Phoradendron libocedri M. S. Taylor 1981-4-8 3509 Butte On serpentine, N side of spur rd, ca. 1/3 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  RSA4394  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  CDA9258  Physalis acutifolia D. G. Kelch 2006-8-2 6 .336 Butte Along Ord Ferry Rd. Comment
  CHSC49439  Physalis lancifolia Vernon Oswald 1983-10-10 1067 Butte Near Chico on Bell Rd. ca. 1/4 mi s of the Mud Creek Diversion Channel. Along the edge of a young orchard. Comment
  RSA726339  Physalis lancifolia L. Ahart 2007-8-19 14494 Butte North strand of a reservoir, about 2.25 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  RSA592544  Physocarpus capitatus S. O. Mattoon 1970-6-12 16 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  SEINET11892048  Physocarpus capitatus Unknown 1981-1 2921 Butte ca.1/2mi W of Oroville Forbestown Rd, on S side of Black Bart Rd 640 Comment
  CAS-BOT-BC434419  Phytolacca americana Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  CHSC103940  Pilularia americana Lowell Ahart 2010-5-22 16712 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC31532  Pilularia americana L. Ahart 1973-4-15 197 Butte Peter Ahart Ranch, Honcut. 45 Comment
  NY34618  Pinus attenuata R. C. Walsh 1987-7-7 297 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC78450  Pinus contorta subsp. murrayana John H. Thomas 1974-11-3 17660 Butte Between Stirling City and Butte Meadows, north of Chico. 4.9 miles from Butte Meadows as measured along the road 1524 Comment
  CHSC20119  Pinus sabiniana M. S. Taylor 1975-4-26 527 Butte On n and e side of Kunkle Reservoir, ca. 500 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  CHSC110980  Pistacia atlantica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 A Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  SEINET10529816  Pityrogramma pallida Mary Susan Taylor 1980-3-30 Taylor 2413 Butte Upper Bidwell Park, Chico. 244 Comment
  SEINET10529962  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-1-5 Taylor 3368 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
  SEINET6973518  Plagiobothrys fulvus var. campestris Lewis S. Rose 1931-4-12 s.n. Butte Sacramento Valleys and its bordering foothills. Comment
  JEPS127011  Plagiobothrys glyptocarpus Lowell Ahart 2016-5-24 20857 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC58891  Plagiobothrys hispidulus Lowell Ahart 1992-7-21 6822 Butte On a gravel bar along Coon Hollow Creek, about 2 1/4 (air) miles north-east of Philbrook Reservoir. 1706 Comment
  JEPS121921  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC29278  Plagiobothrys nothofulvus R. A. Schlising 1980-4-7 3558 Butte 2.8 mi E of Bangor Highway on Swedes Flat Road. 365 Comment
  RSA754790  Plagiobothrys nothofulvus L. Ahart 2009-4-26 15645 Butte Sides of Guardians Trail, about 200 yards SW of Pine Trail, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC112245  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-4-20 18562 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC112903  Plagiobothrys stipitatus var. micranthus B. Castro; Robin Carter 2011-4-29 1879 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC35052  Plagiobothrys stipitatus var. micranthus R. Schlising; R. Banchero 1981-5-19 4049 Butte NW of Oroville along Cottonwood Road, 0.5 mile E of jct with Hwy 99. In roadside ditch. 41 Comment
  JEPS104318  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-5-28 10229 Butte Center of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  RSA726683  Plagiobothrys stipitatus var. micranthus Richard Halse 2002-3-27 6156 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  RSA754389  Plagiobothrys tenellus L. Ahart 2009-4-22 15571 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC66158  Planodes virginica Vernon H. Oswald; Lowell Ahart 1996-5-27 7655 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of marsh at the S end of Tract 2, Sanctuary II. 33 Comment
  CHSC90948  Planodes virginica Lowell Ahart 2005-4-14 11712 Butte Bottom of a deep drain ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC30805  Plantago bigelovii M. S. Taylor 1980-3-1 2333 Butte Ca. 10 ft s of Neal Rd,, ca. 1/4 mi e of the city dump, ca. 1 1/4 mi e of Hwy 99, ca. 7 mi s of Chico. 121 Comment
  SEINET12326968  Plantago bigelovii Unknown 1977-1 18 Butte ca 75 m NW of Cherokee Rd, North Table Mountain, 7 km N of Oroville 366 Comment
  CDA6600  Plantago coronopus L. Ahart 1998-7-1 8030 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  SEINET10499802  Plantago coronopus Mary Susan Taylor 1975-4-18 Taylor 481 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  CHSC70853  Plantago elongata Lowell Ahart 1988-4-8 7949 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  JEPS103364  Plantago elongata Lowell Ahart 2002-3-16 9417 Butte On the bottom and sides of a depression, on the N side of a poor dirt road, ca 50 yards N of Highway 32, ca 1/4 mile E of the intersection of Bruce Road and Highway 32, E of Chico. 73 Comment
  JEPS22685  Plantago elongata Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-25 6324 -B Butte 1.25 mi s Wicks Corner (along road from Chico to Oroville) 94 Comment
  CHSC24895  Plantago erecta T. A. Barrett 1976-4-15 20 Butte 2.7 km e of Chico off the Skyway. 30 Comment
  UCD22636  Plantago hookeriana var. californica Joseph Laferriere 1982-4-18 6 Butte 3 miles south of Oroville on Hwy 70, roadside hilltop 1/4 mile south of jet Baggett-Marysville Rd. 65 Comment
  CHSC101161  Plantago lanceolata Lowell Ahart 2009-5-15 15689 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  RSA754384  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yds north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yds east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  CHSC34141  Plantago major L. Ahart 1981-9-27 3213 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  JEPS119629  Plantago major Lowell Ahart 2012-6-14 18191 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  HSC95425  Plantago virginica L. Ahart 2000-5-13 8348 Butte Margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Rd., 1.25 mi. S of Oroville Airport, 5 air mi. SW of Oroville 43 Comment
  CHSC38587  Platanus racemosa Vernon Oswald 1983-7-13 867 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Growing near the creek in riparian woodland. 85 Comment
  SEINET10905829  Plectritis ciliosa Mary Susan Taylor 1974-3-5 Taylor 76 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC111356  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC114959  Plectritis macrocera Lowell Ahart 2015-3-14 19950 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  CAS-BOT-BC244403  Poa annua John Thomas Howell 1961-9-22 36719 Butte Bank of Feather River, Oroville 53 Comment
  CDA2388  Poa annua L. Ahart 2003-3-31 10031 Butte About 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. Comment
  CHSC47627  Poa annua Lowell Ahart 1974-3-12 317 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC76431  Poa annua Lowell Ahart 1999-10-28 8311 Butte On the west side of a pond, 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
  UC1609249  Poa palustris Lowell Ahart 1993-6-26 7014 Butte ca 1/4 mi w Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC39600  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC236367  Poa secunda subsp. secunda Ira L. Wiggins 1925-3-25 1416 Butte 3.5 miles E of Durham on State Land Colony Highway Comment
  CHSC6070  Poa secunda subsp. secunda B. Wilson 1968-4-19 Butte 2 mi s of Cherokee on Table Mountain. Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 Comment
  CHSC38479  Pogogyne zizyphoroides Vernon Oswald 1983-5-8 455 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  RSA0022186  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte On U. S. Highway 99E, near the Cana road. Comment
  SEINET10866374  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 Ahart 5041 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  SEINET10493887  Polygala cornuta Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4095 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC167547  Polygala cornuta var. cornuta John Thomas Howell 1955-6-14 30449 Butte Magalia 731 Comment
  RSA754850  Polygala cornuta var. cornuta L. Ahart 2009-5-30 15776 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  SEINET4335262  Polygonum R. McKee 1918-9-24 s.n. Butte Chico, Bidwell grounds Comment
  CHSC31216  Polygonum aviculare M. S. Taylor 1980-10-6 3359 Butte N side of Hwy 70 in granitic gravel, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC9535  Polygonum aviculare M MacArthur 1968-6-17 300 Butte SW yard of Building D along So-will-lon-no Street on the Chico State College campus. 60 Comment
  CAS-BOT-BC414195  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  CHSC50680  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte On the north edge of the dirt road, south-west of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CAS-BOT-BC109138  Polygonum bidwelliae David D. Keck 1933-5-31 2470 Butte Bridge crossin Mud Creek, 2.9 miles west of Richardson Springs. Comment
  CHSC25536  Polygonum bidwelliae Robert A. Schlising 1977-8-11 Butte Along Skyway, 1.2 mi s of jct with Neal Road in Paradise. Comment
  CHSC40067  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Thin soil on volcanic rocks along the Neale grade between Chico and Paradise. Comment
  CHSC97344  Polygonum bidwelliae Paul Maslin 2005-5-1 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  SEINET10937590  Polygonum bidwelliae Mary Susan Taylor 1980-5-31 Taylor 2769 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
  JEPS117539  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  CHSC31167  Polygonum douglasii subsp. douglasii M. S. Taylor 1978-9-9 1916 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC39134  Polygonum douglasii subsp. douglasii R. A. Schlising; K. Tarp 1983-8-12 4434 Butte N part of county, road to Philbrook Reservoir, at West Branch of the Feather River. Roadside, in the open. Comment
  UC1101175  Polygonum hydropiperoides Herbert L. Mason and Verne Grant 1946-8-14 13027 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  JEPS110129  Polygonum lapathifolium Lowell Ahart 2006-9-28 13371 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
  RSA795242  Polygonum lapathifolium L. Ahart 2011-8-17 17628 Butte About 10 yards north of the trail, north 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 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CAS-BOT-BC419810  Polygonum parryi Lowell Ahart 1982-6-15 3571 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC419813  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CDA2775  Polygonum persicaria L. Ahart 1999-9-21 8270 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  JEPS121957  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2014-7-7 19582 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CDA13840  Polygonum punctatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13568 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  UC1562375  Polygonum sawatchense subsp. oblivium Vernon Oswald and Lowell Ahart 1990-7-5 4350 Butte 0.3 mi (odometer) w Humbug Rd (along a logging road just s of Cold Springs (near Humbug Summit) ca 4 mi e of Jonesville); Willow Creek 1950 Comment
  SEINET10479686  Polygonum spergulariiforme Mary Susan Taylor 1980-9-19 Taylor 3338 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  CAS-BOT-BC71866  Polypodium californicum Lowell Ahart 1983-3-28 3911 Butte Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown 450 Comment
  CAS-BOT-BC71872  Polypodium californicum Lowell Ahart 1987-5-9 5598 Butte along Pulga Road, about 1/2 mile southwest of Bardees Bar, along the North Fork of the Feather River 365 Comment
  SEINET10834128  Polypodium californicum Mary Susan Taylor 1979-3-19 Taylor 1930 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
  CHSC29018  Polypodium calirhiza M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2430 Butte Ca. 10 ft s of Swedes Flat Rd, at jct with Rocky Honcut Creek, ca. 2 mi e of OrovilleBangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC3887  Polypodium calirhiza Gerry Carrauthers 1966-3-7 79 Butte Honeyrun Rd. above old Honeyrun Bridge. Ca. 5 mi. N. W. of city of Paradise. Comment
  CHSC39614  Polypodium calirhiza Lowell Ahart 1983-3-28 3911 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  SEINET10929373  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 Butte Riparian woodland along S side of Butte Creek, about 1/4 mi downstream from Honey Run Covered Bridge about 6 mi E of Chico. 122 Comment
  SEINET4344592 Image available Polypogon australis Unknown 2009-6-19 15927 Butte T23N, R2E, near center, upper half of Section 35. About 30 yards south of the fence and about 100 yards east of Ten Mile Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  CAS-BOT-BC233059  Polypogon interruptus Lowell Ahart 1983-6-26 4110 Butte Along Ponderosa Way, ca. 1/8 mile E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 miles NE of Oroville 500 Comment
  CHSC4391  Polypogon interruptus V. Hagaman 1966-4-25 Butte Field on CSC campus. Comment
  SD34489  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte near Lomo, 13 miles west of Chester, near road to Chico Creek Comment
  CHSC75341  Polypogon monspeliensis Lowell Ahart 1999-5-21 8070 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  SEINET10530106  Polystichum Mary Susan Taylor 1980-4-1 Taylor 2420 A Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CHSC10673  Polystichum imbricans Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  SEINET10530121  Polystichum imbricans Mary Susan Taylor 1980-3-8 Taylor 2368 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC116275  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte On the east side of Doe Mill Road, about a 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) noth of De Sabla Resevoir. 710 Comment
  JEPS122332  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19724 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS124287  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS87565  Polystichum imbricans subsp. curtum Lowell Ahart 1994-10-9 7561 Butte ca. 8 1/2 air mi n and 1 1/2 mi e of Feather Falls (n side of poor rd from Milsap Bar to Mountain Spring House, ca. 1 mi w of Mountain Spring House and the paved rd.) 1158 Comment
  CHSC116274  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-24 20584 Butte 100 yards southwest of the bridge across Butte Creek, on the north side of Doe Mill Road, about 3 miles (air) north of De Sabla Resevoir. 660 Comment
  CHSC77411  Polystichum imbricans subsp. imbricans Laura Bogni 1997-4-5 32 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 640 Comment
  CAS-BOT-BC72299  Polystichum imbricans subsp. imbricans M. S. Taylor 1980-3-19 2388 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville 396 Comment
  CHSC4146  Polystichum munitum R. Carter 1966-6-26 463 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC38663  Populus fremontii Vernon Oswald 1983-3-12 168 .5 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 0.2 mi e of the end of the pavement. 97 Comment
  CHSC65474  Potamogeton filiformis Vernon Oswald 1987-5-25 2927 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. In a pond along a channel. 79 Comment
  CHSC49686  Potamogeton gramineus Vernon Oswald 1987-6-9 2974 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  JEPS88536  Potamogeton nodosus Vernon H. Oswald and Lowell Ahart 1996-7-22 8090 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (at sw corner of Tract 3.2, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  SEINET3077020 Image available Potentilla flabellifolia Marc Mittleman 1980-8-1 Butte Little Chico Creek, adjacent to China Garden Springs. 262 Comment
  SEINET10483125  Potentilla glandulosa subsp. nevadensis Mary Susan Taylor 1978-7-21 Taylor 1830 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  POM70065  Prunella vulgaris var. lanceolata C. C. Bruce 1897-06 1975 Butte Iron Canyon. Comment
  JEPS120011  Prunus cerasifera Lowell Ahart 2012-10-28 18536 Butte On the north side of the paved road, north of the bridge across Big Chico Creek, north of the Deer Pen, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC23647  Prunus emarginata M. S. Taylor 1976-4-4 1063 Butte On n side of Ponderosa Way, ca. 3 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  UC481515  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CHSC2809  Prunus serotina Carl Pejsa 1958-3-15 89 Butte Bidwell Park Forestry Station. Comment
  CHSC44347  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap. 609 Comment
  LA208651  Prunus virginiana var. demissa A. A. Heller; 1916-4-13 12320 Butte Stilson Canon E of Chico Comment
  SEINET2054141 Image available Pseudognaphalium luteoalbum Marc Mittleman 1980-8-1 221 Butte Little Chico Creek, adjacent to China Garden Springs. 262 Comment
  CHSC77415  Pseudotsuga menziesii var. menziesii Laura Bogni 1997-3-25 29 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  JEPS122031  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  SFV4079  Psilocarphus tenellus M. L. Vincent 1962-4-15 174 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  JEPS119981  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC39367  Pteridium aquilinum var. pubescens L. Ahart; P. Ahart 1983-9-21 4463 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CAS-BOT-BC27144  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC36824  Pterostegia drymarioides F. J. Fuller 1982-4-14 13 Butte Ca. 0.3 mi w of Cherokee Rd, 5.0 mi n of Oroville, 0.7 mi s of Oregon Gulch Rd. 408 Comment
  SEINET516142  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. 1326 Comment
  CHSC3446  Pyracantha fortuneana Judy Potter 1966-2-16 Butte NW corner of Life Science Building. Chico State College, Chico. Comment
  CHSC40266  Pyrola aphylla Lowell Ahart 1985-6-17 5052 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC44422  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC11802  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  SD3515  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  UC474250  Pyrola picta H. F. Copeland 1930-7-21 Butte Jonesville, below cabin Jonesville Comment
  UC474258  Pyrola picta H. F. Copeland 1928-8-25 1018 Butte Jonesville, The Summit Jonesville Comment
  SEINET10973482  Pyrola picta Lowell Ahart 1985-6-17 Ahart 5052 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC5941  Pyrus kawakamii M. MacArthur 1968-6-17 215 Butte Ca. 10 ft SW PSA bld., Chico State College campus. 60 Comment
  JEPS115052  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  CAS-BOT-BC62687  Quercus chrysolepis Lowell Ahart 1981-7-7 2918 Butte About 0.5 mile west of the Oroville Forbestown Road on the Black Bart Road, west of Forbestown 700 Comment
  UCR231084  Quercus chrysolepis Anna M. Hurlbutt 2009-8-12 016 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  CAS-BOT-BC86634  Quercus douglasii Lowell Ahart 1981-4-24 2781 Butte Peter Ahart Ranch, near Honcut Creek, about 1.5 mi N and 3 mi E of Honcut 50 Comment
  CDA20378  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  HSC23322  Quercus douglasii D. G. Schmale 1971-5-25 32 Butte Off Skyway Rd. 8 mi W of Paradise 396 Comment
  UC1135615  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-26 93 Butte 1.5 mi nw Nelson's Bar; Chico Quad. 502 Comment
  CAS-BOT-BC105141  Quercus kelloggii Lowell Ahart 1980-9-10 2625 Butte Little Bald Rock 1100 Comment
  UC600523  Quercus kelloggii H. F. Copeland 1920-7-26 171 Butte Jonesville Comment
  CAS-BOT-BC61579  Quercus lobata C. Hart Merriam 1919-11-21 s.n. Butte Chico Comment
  CDA19814  Quercus lobata P. Akers 2002-5-5 s.n. Butte Northern California; Pacific Heights Rd, Oroville. 36 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  CHSC100471  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15452 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC48385  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  UC1135832  Quercus wislizeni J. E. Sowder 1933-8-4 125 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC52818  Ranunculus alismifolius var. hartwegii Kirsten Tarp 1983-7-31 317 Butte S of Butte Creek House ca. 32 air miles ne of Chico. In meadow. 1828 Comment
  CHSC20721  Ranunculus aquatilis var. capillaceus M. S. Taylor 1975-8-31 890 Butte On edge of Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC45397  Ranunculus aquatilis var. hispidulus Lowell Ahart 1974-4-7 358 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC112908  Ranunculus arvensis B. Castro; Robin Carter 2011-4-29 1873 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.3 mi S of jcn of Hwys 99 and 162W, ca 0.7 mi N of Hamilton Rd. 35 Comment
  CHSC118580  Ranunculus arvensis L. P. Janeway; B. Castro 2017-4-22 12192 Butte Sacramento Valley. City of Chico; north side of E. 20th Street at Notre Dame Blvd, an area eventually to be developed into houses and businesses. 73 Comment
  CAS-BOT-BC378957  Ranunculus bonariensis Lowell Ahart 1980-4-19 2088 Butte Honcut, Peter Ahart Ranch 50 Comment
  SEINET12094429  Ranunculus bonariensis Unknown 1983-1 261 Butte SW of Bangor, T18N, R4E, sec. 36 73 Comment
  CHSC51111  Ranunculus canus var. canus Ginger S. Gough 1989-4-8 22 Butte In gulley, ca. 140 m ne of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  UC176136  Ranunculus canus var. canus A. A. Heller 1913-4-7 10727 Butte Hills six miles north 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
  POM99241  Ranunculus muricatus C. C. Bruce 1897-04 1890 Butte [No location data on label] Comment
  CHSC3802  Ranunculus occidentalis R. L. Adams 1964-4-12 64 Butte Found: Bidwell Park at junction of River Road and Sacramento Ave., near ox-bow lake bend, approx. 50 yds. from junction of roads, due west. Comment
  UC204956  Ranunculus occidentalis A. A. Heller 1914-5-18 11415 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  UC726242  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte on Feather River Hwy 20 mi from Oroville (summit of hwy) Comment
  SEINET10535980  Ranunculus occidentalis var. eisenii Mary Susan Taylor 1978-7-21 Taylor 1829 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
  CHSC11353  Ranunculus occidentalis var. occidentalis Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC93187  Ranunculus pusillus L. Ahart 1995-5-26 7573 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC54308  Ranunculus repens var. pleniflorus Vernon H. Oswald; Lowell Ahart 1991-6-5 4655 Butte Ewalt Camp on the West Branch of Butte Creek, east of Hwy 32 and north of Carpenter Ridge Rd, between Forest Ranch and Lomo. Along the creek. 914 Comment
  CHSC45612  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1983-8-6 335 Butte Near Butte Meadows, 0.2 mi from jct. of Bull Hill Rd with Humboldt Rd. Near creek. 1325 Comment
  CHSC47040  Raphanus raphanistrum R. A. Schlising 1985-3-23 4459 Butte Richvale Vernal Pools, 1/4 mile s of junction Hwy 162 to Oroville and Hwy 99; along the latter and across from Thermalito Afterbay. Comment
  CHSC75529  Rhamnus crocea G. F. Hrusa; T. D. Wilfred 1997-5-8 13743 Butte Uncommon on serpentine slope facing E above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. 740 Comment
  CAS-BOT-BC59889  Rhamnus ilicifolia Lewis S. Rose 1945-5-12 45049 Butte Richardson Springs. 304 Comment
  CHSC51909  Rhamnus ilicifolia L. P. Janeway 1988-3-12 2602 Butte Low in cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. Top of cliff along inner gorge. 243 Comment
  CHSC38638  Rhamnus tomentella subsp. tomentella Vernon Oswald 1983-5-25 553 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. Growing on the edge of an abandoned road in foothill woodland. 134 Comment
  UC870862  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-17 11882 Butte 5 mi e Chico; Canyon of Chico Creek Comment
  JEPS117275  Rhus trilobata Lowell Ahart 2010-5-14 16674 Butte On the south side of the Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 301 Comment
  POM86098  Rhus trilobata var. pilosissima C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  JEPS98684  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  SBBG28486  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow 1800 Comment
  UC1127571  Ribes roezlii J. E. Sowder 1933-7-5 105 Butte 2 mi se Promontory Point; Chico Quadrangle Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  CHSC65453  Rorippa curvisiliqua V. Oswald; L. Ahart 1990-2-26 4136 Butte Enterprise Launch Area on the South Fork of Lake Oroville. Along a streamlet on the upper strand of the lake east of the launching ramp. 268 Comment
  SEINET10907259  Rorippa curvisiliqua Mary Susan Taylor 1975-4-26 Taylor 533 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  JEPS121917  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC1562370  Rorippa palustris Lowell Ahart 1990-6-16 6516 Butte about 1/2 mi sw Enterprise Bridge (across Lake Oroville); below high water line Lake Oroville 243 Comment
  CHSC50655  Rorippa palustris var. hispida Lowell Ahart 1990-6-16 6516 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC82478  Rosa bridgesii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9742 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CDA26269  Rosa californica L. Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, about 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Comment
  JEPS103255  Rosa eglanteria Lowell Ahart 2002-9-8 9933 Butte 1 3/4 mi N by road from town of Feather Falls (W side of paved road, 1/4 mi S of the first parking spaces at the Feather Falls Trailhead) 854 Comment
  JEPS103498  Rosa eglanteria Lowell Ahart 2002-5-15 9660 Butte 100 yds SW of Parking Lot 10, 100 yds NE of the buildings, S side of dirt road, Gray Lodge State Wildlife Management Area, 4 mi SW of Gridley 22 Comment
  CHSC96887  Rosa gymnocarpa Lowell Ahart 2007-6-12 14067 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  UCD40393  Rosa gymnocarpa Rodney Gale Myatt 1971-6-13 718 Butte 1 mile north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  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
  CDA35055  Rosa multiflora L. P. Janeway 2010-4-3 9970 Butte Sacramento Valley; Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 160 m northeast of intersection of E. 8th Street and El Monte Avenue. Comment
  JEPS116658  Rosa multiflora L. P. Janeway, B. Castro 2010-4-30 9970 Butte Lower Bidwell Park, Chico Chico (along southeast side of Big Chico Creek about 160 m northeast of intersection of E, 8th Street and El Monte Avenue); Sacramento Valley 75 Comment
  CHSC6629  Rosa spithamea M. MacArthur 1968-6-17 301 Butte NW yard of Building U on the Chico State College campus. 60 Comment
  CDA37503  Rotala ramosior G. D. Barbe, J. McCaskill 1990-9-5 4369 Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CAS-BOT-BC147095  Rubus John Thomas Howell 1959-9-20 34684 Butte Eastern outskirts of Oroville 60 Comment
  CHSC52473  Rubus armeniacus L. P. Janeway 1987-6-5 2133 Butte Along French Cr Rd 1.4 mi NE of OroQuincy Hwy and Stanwood Saddle. Along road at corner of plantation. 929 Comment
  UCD166765  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 a Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  POM366458  Rubus discolor L. Ahart, P. Ahart 1984-6-10 4716 Butte About 2 miles SW of Forbestown Diversion Dam. NE of Forbestown. 700 Comment
  CHSC51370  Rubus pensilvanicus Vernon Oswald 1990-8-28 4444 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. Northeast of the 'swimming hole' at the Boy Scout Camp. 1292 Comment
  UCD166760  Rubus praecox Marcel Rejmanek 2016-10-6 2162 b Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  SEINET10483604  Rubus procerus Mary Susan Taylor 1980-6-7 Taylor 2792 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  CHSC1604  Rubus ursinus A. Goekler 1928-3-30 Butte Bidwell Park. 60 Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 Comment
  RSA754881  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  JEPS94904  Rumex obtusifolius Lowell Ahart 1998-7-1 8034 Butte about 7 air mi n Oroville (e of cow chute and on e side of Cherokee Rd.); North Table Mountain 403 Comment
  CHSC109612  Rumex pulcher Lowell Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC51375  Sagittaria latifolia Vernon Oswald; Mary Bailey 1990-8-23 4442 Butte Durham Mutual Ditch just south of Butte Creek, ca. 0.25 mi north of Hwy 99 in south Chico. 67 Comment
  POM219140  Salix geyeriana var. argentea H. F. Copeland 1931-6-11 1545 Butte Jonesville. Kirby Meadows. 1829 Comment
  CHSC65690  Salix gooddingii Vernon H. Oswald 1996-3-22 7249 Butte Sanctuary 1, S edge of Tract 2. 33 Comment
  CHSC109006  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  JEPS119606  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SEINET10538854  Salix lasiolepis Mary Susan Taylor 1981-3-24 Taylor 3434 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
  POM219070  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. Massed about the 'Lily Pond' 1700 Comment
  SBBG29070  Salix lemmonii E. B. Copeland 1931-8-1 Butte Jonesville 1700 Comment
  SEINET10937638  Salsola kali var. tenuifolia Mary Susan Taylor 1974-10-11 Taylor 332 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC110041  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. 90 Comment
  CHSC52066  Salvia columbariae R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yds W of road. 419 Comment
  SEINET13947659 Image available Salvia sonomensis A. A. Heller 1914-1 11410 Butte W slope of the Sierra near Forest Ranch; 2400 ft alt. 732 Comment
  CHSC81480  Sambucus mexicana Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe lake in Upper Bidwell Park 500 yards away from Big Chico Creek. 91 Comment
  CHSC81481  Sambucus mexicana Sabrina Wright; Alvin Myers 2000-5-7 Butte Chico. Upper Bidwell Park on Arena Rd. 60 Comment
  CHSC90615  Sanicula bipinnata Chris Ottinger 1983-3-15 17 Butte Ca. 0.6 km sw of Covered Bridge, s side of Butte Creek, 10.2 km ese of Chico. 120 Comment
  SEINET10939821  Sanicula bipinnata Mary Susan Taylor 1981-5-5 Taylor 3618 Butte T20N R6E ne sec 11. Forbestown quad. E side of spur rd off 21N35Y, ca. 0.5 mi SE of Feather Falls trailhead, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CHSC3468  Sanicula bipinnatifida Roger Jaegel 1966-3-2 21 Butte Collected four miles north east of Chico in upper Bidwell Park in an area of small drainage on a south slope. Upper Bidwell Park. Comment
  SEINET10454569  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4715 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC28642  Sanicula crassicaulis M. S. Taylor 1979-3-31 1971 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  RSA754582  Sanicula crassicaulis L. Ahart 2009-4-22 15566 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC11875  Sanicula graveolens E. B. Copeland 1931-6-22 666 Butte Jonesville. On ridge west of Jones Creek. 2100 Comment
  CAS-BOT-BC436855  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA715723  Saxifraga integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC10598  Scandix pecten-veneris Lowell Ahart 1965-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  POM304447A  Scandix pecten-veneris Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-6 3280 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville 30 Comment
  SEINET10454696  Scandix pecten-veneris Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5225 Butte T20N R5E ne/nw sec 5. At jct of Bell Ranch Rd and Oroville- Quincy hwy (l62), ca. 1 mi sw of Berry Canyon School, s of Lake Madrone. Ca. 8 air mi ne of Oroville. Comment
  RSA770096  Schedonorus arundinaceus L. P. Janeway, B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CAS-BOT-BC111371  Schoenoplectus acutus var. occidentalis Lowell Ahart 1982-7-10 3674 Butte Gray Lodge, ca. 13 mi. SW of Gridley, 1/4 mile SE of the Gray Lodge Headquarters 35 Comment
  CHSC24430  Schoenoplectus mucronatus Lowell Ahart 1976-9-18 Butte Rice fields on the Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC111654  Schoenoplectus mucronatus Bellue 1947-7-23 s.n. Butte By 730 Princeton. 1 mi So-1 mi W Butte City 4 corners. Comment
  SFV12648  Scirpus acutus var. occidentalis M. L. Vincent 1963-6-10 424 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  UC1100776  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-7 12993 Butte Gridley Road n Butte Sink (Big Pond near river, Grey Lodge Game Refuge); Grey Lodge Game Refuge, n of Butte Sink Comment
  CHSC42898  Scirpus congdonii Lowell Ahart 1987-7-8 5813 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC56798  Scirpus congdonii L. P. Janeway; C. A. Janeway 1986-9-13 1894 Butte Wide flat meadow along Humbug Summit Road ca 1 1/2 mi southwest of Humbug Summit. 1859 Comment
  CAS-BOT-BC123993  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  CHSC56808  Scirpus diffusus L. P. Janeway 1987-6-8 2177 Butte 8.3 mi south of Bald Mountain via dirt road. 777 Comment
  CHSC94357  Scirpus microcarpus Lowell Ahart 2006-7-25 13061 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10466960  Scirpus tuberosus Lowell Ahart 1991-9-14 Ahart 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC29398  Scleranthus annuus subsp. annuus R. A. Schlising; R. Banchero 1980-6-17 3740 Butte N of Magalia at old Coutelenc Site, along Coutelenc Road, 1.7 mi S of jct with Skyway at Lovelock; roadside. Comment
  CAS-BOT-BC214186  Scutellaria Clare B. Hardham 1975-6-7 20426 Butte South end of Oroville Dam Comment
  CHSC42831  Scutellaria californica L. P. Janeway 1987-6-5 2126 Butte Along OroQuincy Hwy 0.5 mi S of Suspension Bridge over Lake Oroville. 320 Comment
  CHSC58274  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the dirt road, on the north side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  RSA718334  Scutellaria californica L. Ahart 2006-6-9 12658 Butte North side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.75 miles (air) southwest of Pulga. 386 Comment
  CAS-BOT-BC415014  Sedella pumila John Thomas Howell 1976-4-1 51535 Butte Table Mountain, 4 to 5 miles N of Oroville 304 Comment
  CHSC90604  Sedella pumila M. J. Luesebrink 1978-4-12 16 Butte Ca. 300 ft. s of Butte Creek, ca. .25 mi sw of Covered Bridge, n of Humbug Rd., 4.4 mi ne of junction with Skyway Rd., 5.7 mi ese of Chico. 91 Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of Chico Comment
  HSC86854  Sedella pumila Sara E. Wold 1982-4-13 14 Butte Table Mtn., Cherokee Rd., 1 km NE of Oroville, 225 m W of road 250 Comment
  CHSC33872  Sedum albomarginatum M. S. Taylor 1981-5-11 3687 Butte N side of Feather River Hwy 70, at jct with Pulga ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  SEINET10973375  Sedum albomarginatum Mary Susan Taylor 1982-5-21 Taylor 4489 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  CHSC87786  Sedum spathulifolium Paul Maslin 2004-4-15 16 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610128E 4409116N. 396 Comment
  CHSC41990  Selaginella hansenii Lowell Ahart 1976-4-17 1082 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  UC306790  Selaginella hansenii Mrs. R. M. Austin May 1883 321 Butte e Chico Comment
  CHSC41991  Selaginella wallacei Lowell Ahart 1976-4-17 1083 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  CHSC48044  Selaginella wallacei L. P. Janeway 1984-9-29 1176 Butte Near Feather Falls overlook on Fall River (a tributary to Middle Fork Feather River). 'Feather Falls Scenic Area. 563 Comment
  CHSC26844  Senecio aronicoides M. S. Taylor 1978-6-24 1636 Butte On n side of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1371 Comment
  SEINET10474901  Senecio aronicoides Mary Susan Taylor 1979-7-21 Taylor 2163 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC89479  Senecio eurycephalus var. eurycephalus Jenny Marr 1994-7-6 210 Butte Located in the mountains above Oroville off Forbestown Reservoir Road. 883 Comment
  CAS-BOT-BC363993  Senecio integerrimus var. major A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC4652  Senecio integerrimus var. major R. Carter 1966-4-26 364 Butte Found ca. 10 mi. NE of Oroville along E side of USFS road 21N40 to Bloomer Mt., in woods 15 yds. off road 2 mi. W from intersection with Oroville-Quincy Rd. 762 Comment
  CDA7667  Senecio sylvaticus L. Ahart 1998-6-3 7966 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC38386  Senecio sylvaticus Vernon Oswald 1983-4-24 358 Butte Upper Bidwell Park, Chico, a Diversion Dam. On outcrops overlooking the creek. 115 Comment
  RSA0060801  Senecio sylvaticus Lowell A. Ahart 2012-4-9 17843 Butte High east cliff edge of Big Chico Creek, about 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2.5 miles (air) northeast of Chico. 206 Comment
  UC1070203  Senecio triangularis P. L. Johannsen 1936-7-17 941 Butte 3 mi se Butte Mdws.; Paynes Creek Quad. Comment
  CDA34164  Senecio vulgaris L. Ahart 2009-4-17 15539 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC46968  Senecio vulgaris Lowell Ahart 1974-2-25 307 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA755040  Senecio vulgaris L. Ahart 2009-5-15 15692 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  SEINET10929339  Sequoiadendron giganteum Mary Susan Taylor 1975-5-6 Taylor 562 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
  CAS-BOT-BC364728  Sericocarpus oregonensis subsp. californicus Lowell Ahart 1985-8-15 5165 Butte East of the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 883 Comment
  CDA2433  Setaria parviflora D. G. Kelch 2006-8-2 6 .339 Butte Along Durham-Dayton Hwy. at creek crossing. 0 Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  SBBG128045  Setaria viridis L. Ahart 2010-9-24 17237 Butte irrigated, near the SW edgeof the Golf Course, ca. 10 yards S of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Crk, Bidwell Park 91 Comment
  CHSC30872  Sherardia arvensis J. D. Jokerst 1979-4-2 1175 Butte Top of North Table Mt along the sides of Cherokee Rd at the East side of the Mt. Comment
  CHSC84151  Sherardia arvensis Lowell Ahart 2003-6-25 10315 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  SEINET10869786  Sherardia arvensis Mary Susan Taylor 1976-3-30 Taylor 1040 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
  SEINET10902558  Sherardia arvensis Mary Susan Taylor 1980-4-6 Taylor 2462 Butte T18N R5E c sec 22. On W side of La Porte Road, ca. 2 mi N of Bangor, in Foothill Woodland. With L. Ahart & J.D. Jokerst. 335 Comment
  SEINET12320791  Sherardia arvensis K. D. Marsh 1974-1 8 Butte Table Mountain, ca 6 mi E of Oroville 373 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
  CHSC34963  Sidalcea calycosa Eric D. Osman; R. Schlising 1978-4-22 16 Butte Ca 1.5 mi E of Chico, 0.2 mi S of Highway 32 and 100 feet N of Humboldt Rd. 80 Comment
  CHSC103746  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  UC66034  Sidalcea hartwegii A. A. Heller and H. E. Brown 1902-5-9 5512 Butte near Clear Creek; near Clear Creek, Berry Canyon Comment
  HSC87160  Sidalcea hartwegii S. T. Heaston 1982-4-8 17 Butte SE of Chico, 7 mi. SE of the junction of Hwy. 99 and Skyway, 100 m S off of Skyway 305 Comment
  SEINET11991651  Sidalcea hartwegii Unknown 1976-1 6 Butte 10 yds S of Sky Way Rd, 6 mi E from junction of Hwy 99 & Sky Way Rd 366 Comment
  UC108901  Sidalcea hartwegii Mrs. R. M. Austin 1883-1 Butte Little Chico Comment
  UC725939  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte near the covered bridge on Butte Creek e Chico; near the covered bridge on Butte Creek e of Chico Comment
  CHSC28473  Sidalcea hirsuta R. A. Schlising 1979-5-30 3429 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS94724  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 Butte about 7 air mi n of Oroville (North Table Mountain, abut 1/4 mi n of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CDA36507  Sidalcea hirsuta Butte County Ag. Comm. 1961-5-1 Butte Near Nelson. 0 Comment
  JEPS104600  Sidalcea malviflora Lowell Ahart 1993-10-3 7269 Butte W branch of Wildcat Creek, about 2 mi NE of Coyote Gap 1402 Comment
  HSC38066  Sidalcea malviflora Thomas W. Nelson, Jane Nelson 1976-5-10 2474 Butte Beside Hwy. 191, 4 mi. W of Paradise Comment
  RSA4491  Sidalcea oregana subsp. spicata E. B. Copeland 1930-7-15 659 Butte Jonesville. Comment
  UCR133588  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 1318 Butte Jonesville 1524 Comment
  CHSC77818  Sidalcea robusta Tim Stofer 2000-4-20 20 Butte On the east side of the trail 1/2 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 91 Comment
  CHSC84914  Sidalcea robusta Becky Munds 1990-4-16 10 Butte Upper Bidwell Park Chico. Vic. of Salmon Hole on e side in gully. 76 Comment
  UC727036  Sidalcea robusta A. A. Heller 1941-5-9 16108 Butte steep roadside bank on the Clark Road about a mi above old Clear Creek Post Office; mi above site of old Clear Creek Post Office Comment
  CHSC23379  Silene antirrhina R. A. Schlising 1974-6-4 3137 Butte 9.9 mi NE of Chico, along Hwy 32. Comment
  CHSC99579  Silene antirrhina L. P. Janeway; David Toren, Heather Koeth, Duryea Delacroix 2008-6-11 9406 Butte Northern Sierra Nevada Foothills. Plumas National Forest; along French Creek Road about 3.0 road km northeast of Oroville-Quincy Hwy and 1.0 air km west of Mountain House; slopes east above Mosquito Creek. Old road cutbank. 902 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  UC120147  Silene lemmonii unknown Butte Jonesville Comment
  CHSC44146  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1988-8-3 3658 Butte Ca. 50 ft e of Willow Creek at the Butte-Tehama county line n of Jonesville. 1554 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
  CHSC80520  Sinapis arvensis Vernon H. Oswald 2001-4-1 9993 Butte Grainland Rd (Pratt Grant Rd) 0.75 mi east of Seven Mile Lane, southwest of Chico. 30 Comment
  CAS-BOT-BC74929  Sinapis arvensis Lowell Ahart 1974-5-1 s.n. Butte About 2 miles east of Bangor. 500 Comment
  CHSC46348  Sisymbrium officinale Lowell Ahart 1989-5-23 6247 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC33224  Sisymbrium orientale R. E. Preston 1981-6-2 81 Butte At roadside. On s side of Hwy 70 across from power company rest area, ca. 38 km nne of Oroville. 488 Comment
  CHSC12106  Sisyrinchium bellum J. M. Pitts 1972-4-19 149 Butte 3.5 mi ne Honeyrun Rd on Humbug Rd. n side of road. Comment
  JEPS113183  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CHSC101139  Smilax californica Lowell Ahart 2009-5-15 15716 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
  CHSC20500  Smilax californica M. S. Taylor 1975-6-25 805 Butte Along Mud Creek, ca. 1/4 mi n of Richardson Springs Hotel, ca. 6 mi n of Chico. 213 Comment
  CHSC47513  Solanum americanum Lowell Ahart 1989-11-12 6403 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  JEPS95793  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  JEPS95803  Solanum americanum Lowell Ahart 1999-9-18 8261 Butte about 2 miles north and 1/4 mile east of Honcut; Peter Ahart Ranch, Oroville; Peter Ahart Ranch; about 2 miles north and 1/4 mile east of Honcut; about 12 miles south of Oroville 30 Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  CAS-BOT-BC157521  Solanum umbelliferum E. Patte 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC43637  Soliva sessilis Vernon Oswald 1985-4-28 1725 Butte Upper Bidwell Park, Chico, at Parking Area P (between Salmon Hole and Devil's Kitchen). 207 Comment
  CHSC101816  Sonchus asper subsp. asper Lowell Ahart 2009-6-12 15838 Butte 5 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS127027  Sonchus asper subsp. asper Lowell Ahart 2016-6-4 20926 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  CAS-BOT-BC158896  Sorbus scopulina Lowell Ahart 1982-9-13 791 Butte Near the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CDA13256  Sorbus scopulina var. cascadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13107 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10483617  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3706 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  CHSC22890  Sorghum halepense Robert A. Schlising 1974-10-6 3160 Butte Along Sacramento River in field about .5 mi s of jct Sacramento Road and River Road, along latter. Comment
  JEPS120721  Sorghum halepense Lowell Ahart 2013-10-12 19110 Butte On the west side of Upper Palermo Road, about 250 yards south of the intersection, about 2 air miles NE of Palermo. Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  HSC73012  Sparganium angustifolium M. S. Taylor, L. Ahart 1981-8-16 4195 Butte Jones Meadow, 3 mi. S of Philbrook Reservoir, 6 mi. NE of Stirling City 1829 Comment
  CHSC82262  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC103974  Spergularia bocconi Lowell Ahart 2010-5-7 16610 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  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
  CHSC112244  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC6651  Spiraea M. MacArthur 1968-6-16 346 Butte In SE yard of Building T, Chico State College campus. 60 Comment
  CHSC1609  Spiraea densiflora V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC44532  Spiranthes porrifolia Lowell Ahart 1988-5-30 6032 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  JEPS108131  Sporobolus creber Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville 34 Comment
  UC884348  Stachys ajugoides var. rigida A. A. Heller 1915-5-28 11907 Butte near Cohasset; Sierra foothills Comment
  CHSC38483  Stachys pycnantha Vernon Oswald 1983-8-9 974 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 500 ft upstream from Five Mile Recreation Area. 85 Comment
  SEINET10499273  Stachys pycnantha Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4233 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  JEPS122215  Stebbinsoseris heterocarpa Lowell Ahart 2014-4-20 19389 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC99553  Stellaria borealis subsp. sitchana L. P. Janeway; D. Toren, C. Christofferson,H. Koeth, D. Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada. Plumas National Forest; along Coon Creek about 100 m northeast of Rogers Cow Camp Campground, about 500 m west of Oroville-Quincy Hwy. 1234 Comment
  UC1586479  Stellaria crispa Vernon H. Oswald and Lowell Ahart 1991-7-15 4737 Butte ca 5.75 air mi ne Brush Creek (Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Jordan Creek, e of Oroville-Quincy Hwy); Jordan Creek 1082 Comment
  SEINET10833472  Stellaria jamesiana Mary Susan Taylor 1978-7-19 Taylor 1753 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  UCD99315  Stellaria longipes subsp. longipes E. B. Copeland Jun and Jul 1931 s.n. Butte Jonesville. 1500 Comment
  CDA42900  Stellaria media L. Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  JEPS107361  Stellaria media Lowell Ahart 2005-4-2 11689 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
  CHSC10654  Stellaria nitens Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38306  Stellaria nitens Vernon Oswald 1983-3-4 111 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. 2.4 mi e of the power lines. 256 Comment
  CHSC40649  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC45567  Stellaria nitens Lowell Ahart 1973-3-14 170 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS87165  Stellaria obtusa Lowell Ahart 1992-7-21 6817 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  CHSC61300  Stephanomeria lactucina Lowell Ahart 1993-7-29 7131 Butte On the west side of the dirt road to the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1463 Comment
  SEINET10508641  Stipa columbiana Mary Susan Taylor 1977-8-17 Taylor 1481 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  SEINET10508393  Stipa lemmonii Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4087 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  SEINET10480708  Streptanthus Mary Susan Taylor 1980-7-6 Taylor 3074 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC7047  Streptanthus diversifolius Darron Cook 1969-4-22 66 Butte W. side road top Table Mtn. ca. 7 mi n of Oroville. 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
  CAS-BOT-BC87391  Streptanthus longisiliquus Lowell Ahart 1983-6-30 4187 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  CHSC31339  Streptanthus polygaloides K. Bridwell 1978-5-31 129 Butte Ca. 200 yds e of Coutolenc Rd, ca. 3 mi ne of Magalia. 762 Comment
  RSA712799  Streptanthus polygaloides L. P. Janeway 2005-6-26 8431 Butte South-facing slope 0.4 km. south of top of Batchelor Point, 0.6 km. east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  SEINET10448519  Streptanthus polygaloides Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5518 Butte outcrop, 0.6 mi S of Coyote Gap, on open knoll at loop in French Creek Road, ca. 25 air mi NE of Oroville. Comment
  CAS-BOT-BC87515  Streptanthus tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Oroville Ranger Station. Bald Rock Compartment. Upper end of Galen Ridge. 1036 Comment
  UCD164181  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss, Patrick J. McIntyre 2011-4-10 IC-SS 188 Butte Table Mountain. 1092 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
  CHSC80521  Streptanthus tortuosus var. suffrutescens Vernon H. Oswald 2001-4-8 9995 Butte Old roadbed paralleling Oroville-Quincy Hwy just north of Bidwell Bar Bridge. 292 Comment
  SEINET6647401  Styrax officinalis var. californicus M. J. Williams, W. Roderick 1984-5-25 84- 23 -2 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam. Comment
  CAS-BOT-BC48057  Styrax redivivus M. S. Taylor 1982-5-23 4511 Butte S side of Hwy 70, near Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. Pulga SW quad. 487 Comment
  CAS-BOT-BC48058  Styrax redivivus M. S. Taylor 1976-5-3 1105 Butte 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
  CHSC116483  Styrax redivivus R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49598 Butte Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  CHSC47408  Swertia albicaulis var. nitida Lowell Ahart 1979-5-29 1902 Butte Along the edges of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC94586  Symphyotrichum bracteolatum Lowell Ahart 2006-9-13 13318 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431