Search Results — 2000 specimen records retrieved (1611 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  SEINET10530558  Abies concolor Mary Susan Taylor 1976-2-22 Taylor 1001 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CAS-BOT-BC330577  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling Comment
  CHSC43579  Acer circinatum Vernon Oswald 1987-4-27 2346 Butte Paradise Lake between the Picnic Area and Doon Creek. 777 Comment
  CHSC43580  Acer glabrum var. torreyi Vernon Oswald 1983-7-6 826 Butte Beside Humboldt Rd. 3.4 mi NE of Butte Meadows. Growing near Butte Creek in yellow pine forest. 1432 Comment
  CAS-BOT-BC334156  Acer negundo var. californicum Lewis S. Rose 1937-6-10 37378 Butte 7 miles W of Honcut along Feather River 22 Comment
  CHSC20101  Acer negundo var. californicum M. S. Taylor 1975-4-8 441 Butte S edge of Big Chico Creek by bridge between Holt and Butte Halls, California State University, Chico. 60 Comment
  SEINET10454009  Acer saccharinum Mary Susan Taylor 1975-5-6 Taylor 555 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
  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
  CHSC249  Achillea millefolium M. Anthony 1954-5-30 Butte Rag Dump 5. 609 Comment
  CAS-BOT-BC210629  Achnatherum lemmonii Lowell Ahart 1983-6-21 4087 Butte Along Bloomer Hill Road, ca. 1.25 mi. W of the Oroville Quincy Highway, ca. 15 mi. NE of Oroville 450 Comment
  CAS-BOT-BC210637  Achnatherum lemmonii John Thomas Howell 1955-6-14 30463 Butte Magalia 731 Comment
  CHSC27659  Achnatherum lemmonii Robert 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-BC217018  Achnatherum occidentale V. Oswald; L. Ahart 1988-7-13 s.n. Butte S side of road to High Lakes, E of Philbrook Reservoir 1859 Comment
  UC392235  Achnatherum occidentale subsp. californicum E. B. Copeland July, 1929 Butte woods w Willow Creek; Jonesville, Willow Creek 1600 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
Read comments
Jun 8 2012
  JEPS118485  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  CHSC252  Achyrachaena mollis P. Delaplane 1965-4-21 21 Butte On E. side of Cohasset Rd. 1/4 mi. S.W. of Chico Municipal Airport. 60 Comment
  UCSB63601  Achyrachaena mollis Shannon, Gail 1986-4-18 Butte Richardson Springs; 4.1 mi. NE of Chico; jct. of Richardson Springs road/Cohasset road 60 Comment
  CHSC30682  Acmispon americanus var. americanus M. S. Taylor 1978-7-18 1689 Butte N side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1325 Comment
  CHSC37260  Acmispon americanus var. americanus L. Ahart 1982-6-15 3578 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC90380  Acmispon brachycarpus Lisa J. Newsum 1984-4-19 19 Butte Bidwell Heights Rd., 1 1/4 from jct. with Hwy 32, 7 mi e of Chico. 304 Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  CHSC65555  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-6 4775 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC879  Acmispon parviflorus A. Koopman 1929-4-21 Butte Near Pentz. 152 Comment
  JEPS122002  Acmispon parviflorus Lowell Ahart 2014-5-13 19456 Butte Below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. Comment
  CHSC2835  Acmispon wrangelianus David Prall 1965-4-25 29 Butte Growing on roadside bank, on north side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (cvered Bridge). 152 Comment
  CHSC38499  Acmispon wrangelianus Vernon Oswald 1983-4-9 297 Butte Upper Bidwell Park, Chico, at about 500 ft level on the north slope 300 ft w of the power lines. 152 Comment
  UC398914  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CAS-BOT-BC391374  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC52674  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-27 359 Butte N part of county, n of Philbrook Reservoir at Coon Hollow. 1706 Comment
  CHSC11919  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit'. 2100 Comment
  SEINET3286839 Image available Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Stream at Chaparral. 1524 Comment
  CHSC50538  Adiantum aleuticum Vernon Oswald; Lowell Ahart 1990-6-20 4308 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1981 Comment
  CHSC28415  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, ca. 7 mi ne of Covered Bridge. 243 Comment
  SEINET7728123  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CHSC101750  Adiantum jordanii Lowell Ahart 2009-5-23 15742 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 Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC31739  Aegilops triuncialis L. Ahart 1976-5-2 1089 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47596  Aegilops triuncialis Lowell Ahart 1980-5-10 2227 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC3857  Aesculus carnea Gary Dutton 1966-4-13 205 Butte Found in front of CSC Aud. Comment
  JEPS93835  Agoseris heterophylla Lowell Ahart 1998-7-1 8024 Butte about 7 air mi n of Oroville (about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
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Jan 19 2011
  CHSC42472  Agoseris retrorsa Lowell Ahart 1987-5-12 5653 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET10475109  Agoseris retrorsa Mary Susan Taylor 1980-5-27 Taylor 2724 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  SEINET8506561  Agrimonia gryposepala D. W. Taylor 2006-6-28 19553 Butte Striling City, meadow ca. 2 miles West therefrom along the ?Hendricks Canal above the PG&E diversion canal 975 Comment
  CAS-BOT-BC162042  Agrostis Lowell Ahart 1987-6-9 5727 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS95966  Agrostis avenacea Lowell Ahart 1999-6-12 8088 Butte large reservoir north of Beatson Hollow; North Table Mountain; about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 295 Comment
  JEPS107757  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  UC600602  Agrostis exarata H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CAS-BOT-BC139715  Agrostis gigantea M. S. Taylor 1978-7-18 1676 Butte On west side of Highway 32. Ca. 0.25 mile north of Forest Ranch. 723 Comment
  JEPS98366  Agrostis hendersonii Lowell Ahart 2000-6-27 8515 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  UC600601  Agrostis idahoensis E. B. Copeland July, 1929 Butte Jonesville Comment
  CHSC102963  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC42906  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles south-west of Forbestown. 670 Comment
  CHSC78355  Agrostis pallens Lowell Ahart 2000-6-29 8538 Butte On the west 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
  JEPS116002  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC64253  Agrostis scabra S. C. Morey 1983-8-3 693 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC31933  Agrostis variabilis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1032 Butte Humboldt Peak, large, open, bowl-shaped, volcanic mudflow ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  RSA754948  Aira caryophyllea L. Ahart 2008-5-12 14740 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 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
  SEINET7067154  Aira caryophyllea A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  CAS-BOT-BC138343  Aira caryophyllea var. caryophyllea Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  SEINET10483793  Alchemilla occidentalis Mary Susan Taylor 1980-4-6 Taylor 2440 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
  CHSC33525  Alisma triviale R. A. Schlising 1981-6-21 4104 Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC97373  Alisma triviale Paul Maslin 2006-6-15 39 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Man made pond near reserve headquarters. UTM: 10611097E 4411325N. 487 Comment
  CAS-BOT-BC460738  Allium amplectens A. A. Heller 1914-4-16 11299 Butte Chico-Centerville road, 2 miles from Chico. Comment
  RSA256662  Allium amplectens R. A. Vanbianchi 1974-4-20 209 Butte 300 yards south of the intersection of Pentz and Clark Roads. Comment
  RSA550218  Allium amplectens D. W. McNeal, Todd McIntyre 1989-4-18 3367 Butte Bank beside Highway 70, 4.5 miles S of the junction of Highway 162 in Oroville. Comment
  SEINET10839457  Allium amplectens Mary Susan Taylor 1975-6-30 Taylor 822 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  SEINET3884197  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge.; 0 518 Comment
  UC600451  Allium campanulatum H. F. Copeland 1930-7-19 Butte Jonesville 1524 Comment
  UC600452  Allium campanulatum E. B. Copeland 1930-7-12 Butte Jonesville 1800 Comment
  CHSC2065  Allium cratericola V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  CHSC36948  Allium cratericola R. A. Schlising 1981-3-29 4010 Butte N of Oroville and Cherokee, off Hwy 70 on Lunt Road. 533 Comment
  CHSC37127  Allium membranaceum M. S. Taylor 1982-6-24 4737 Butte On Flea Valley Ridge, ca. 1 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70, ca. 20 air mi ne of Oroville. 1097 Comment
  CHSC74029  Allium membranaceum B. Castro; Plumas NF botanists 1997-6-13 743 A Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  CAS-BOT-BC472973  Allium membranaceum Alice Eastwood 1921-5-22 10566 Butte Los Vergils Comment
  CHSC30815  Allium peninsulare M. S. Taylor; J. D. Jokerst 1980-4-19 2546 Butte S side of Butte Creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CAS-BOT-BC132078  Allium peninsulare var. peninsulare Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut, along North Honcut Creek 50 Comment
  CAS-BOT-BC274  Allocarya glyptocarpa Amos Arthur Heller 1914-3-16 11202 Butte Hills 8 miles N of Oroville Comment
  CHSC35097  Allophyllum divaricatum R. A. Schlising 1981-6-13 4082 Butte Near Brush Creek, on Milsap Bar Road, 3.3 mi S of its junction with Bald Rock Road. Roadside bank. Comment
  CHSC39975  Allophyllum divaricatum L. Ahart; P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Along edge of dirt road. 1100 Comment
  CHSC48645  Allophyllum divaricatum Vernon Oswald 1986-7-22 2215 Butte Hwy 32, 1.2 mi n of Chico Creek near the spring. On the edge of the road. 1097 Comment
  CHSC35102  Allophyllum integrifolium R. Schlising; R. Banchero 1980-7-31 3944 Butte N end of Snag Lake. 1725 Comment
  POM195742  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville. 1550 Comment
  CDA9273  Alnus rhombifolia D. G. Kelch 2006-8-2 6 .353 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  SEINET12430634 Image available Alnus rhombifolia Kathy Corson 1969-4-6 17 Butte in Big Chico Creek just inside entrance of East 4th Street to Bidwell Park, Chico Comment
  CHSC113278  Alopecurus carolinianus Lowell Ahart 2014-4-26 19417 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
  HSC100810  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte ~1/4 mi. S of the parking area, N Table Mountain, 4 1/2 (air) mi. NE of Oroville. 372 Comment
  SBBG128584  Alopecurus saccatus L. Ahart 2010-5-16 16691 Butte bottom of vernal pools, ca. 0.25 mi S of parking area, N Table Mtn, ca. 4.5 mi (air) NE of Oroville 371 Comment
  JEPS120614  Amaranthus albus Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  JEPS95991  Amaranthus albus Lowell Ahart 1999-9-21 8265 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
  RSA722695  Amaranthus albus Richard Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET3125082 Image available Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC204582  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 mi n Oroville Comment
  JEPS115051  Amaranthus californicus Lowell Ahart 2007-11-3 14572 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  CHSC89437  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  RSA702776  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico 58 Comment
  UCD97758  Amaranthus retroflexus L. E. Hazeltine 1916-7-21 Butte Chico. 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
  SEINET194925  Amelanchier alnifolia A. A. Heller 1939-4-26 15383 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC142953  Amelanchier utahensis A. A. Heller 1919-5-17 13156 Butte Banks of the Feather River near Stirling. Comment
  UC726737  Amelanchier utahensis A. A. Heller 1939-4-26 15383 Butte near river at foot of grade leading down from Stirling City Comment
  HSC97004  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  CHSC101256  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  JEPS43476  Amsinckia intermedia Joan O. Danielson 1966-4-6 21 Butte corner Cherokee Road and Oregon Gulch Road 609 Comment
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line Comment
  RSA32735  Amsinckia lycopsoides A. A. Heller 1942-4-5 16419 Butte Just north of Artois. Comment
  UC196290  Amsinckia lycopsoides A. A. Heller 1914-4-21 11310 Butte in a vacant lot in Chico; Sacramento Valley Comment
  CAS-BOT-BC26968  Amsinckia verna Amos Arthur Heller 1914-4-21 11310 Butte Chico Comment
  CHSC44895  Anaphalis margaritacea Lowell Ahart 1988-7-31 6143 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC8166  Andropogon glomeratus var. scabriglumis K. Henegar 1969-5-15 61 Butte Upper Bidwell Park, on n side of road opposite Bear Hole. Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  UC1246763  Angelica californica A. S. Barclay, R. D. Barbee and K. E. Blum 1962-6-20 1198 Butte 2 mi s of Cohasset (on road to Chico) 762 Comment
  CAS-BOT-BC77281  Antennaria microphylla Lowell Ahart 1985-6-17 5048 Butte 4 miles south-east of Feather Falls, along the dirt road on Fields Ridge 792 Comment
  CHSC28169  Antennaria rosea J. D. Jokerst 1979-7-2 299 Butte Near summit of Humboldt Peak on N facing slope. Comment
  CAS-BOT-BC84692  Anthemis cotula Lowell Ahart 1987-5-27 5710 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  RSA518695  Antirrhinum leptaleum L. Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 0.25 mile south-west of the Enterprise Bridge across Lake Oroville. 267 Comment
  CHSC28500  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor 1979-7-22 2169 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge over Hwy 70, ca. 27 mi n of Oroville. 487 Comment
  CHSC39954  Antirrhinum vexillo-calyculatum subsp. intermedium L. Ahart; P. Ahart 1983-6-30 4174 Butte Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. 350 Comment
  CHSC12407  Aphanes occidentalis Lowell Ahart 1973-3-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90470  Aphanes occidentalis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11660 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
  CAS-BOT-BC454511  Aphanes occidentalis Lowell Ahart 1983-4-7 3968 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/8 miles east hof Honcut 50 Comment
  CHSC102418  Apocynum cannabinum Lowell Ahart 2009-6-19 15925 Butte On damp soil, 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
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UC398913  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  CHSC52688  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 364 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1828 Comment
  CHSC108  Aralia californica R. M. Staley 1952-7-5 Butte Honey Run. 304 Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA632994  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27466 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633002  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27478 Butte Ponderosa Way, south of Cohasset. 750 Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  CAS-BOT-BC38862  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek east of Chico, especially on the north slope. Comment
  CHSC41221  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1985-7-18 2516 Butte Canyon of Rock Cr. NW of Cohasset and Cohasset Ridge. Lower canyon slope between Cohasset Hwy and creek. Comment
  UC725336  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte on Pentz-Magalia Rd 4 mi below Paradise Comment
  CAS-BOT-BC38568  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15489 Butte Neal Road, Paradise at the Game Refuge above Bowle's Mansion. Comment
  SBBG50284  Arctostaphylos mewukka subsp. truei G. L. Smith 1975-4-9 Butte Magalia Comment
  CHSC3303  Arctostaphylos nevadensis M. L. Miller 1966-4-23 Butte About 1/2 mile above Stirling City on the Skyway. Comment
  SEINET5539344  Arctostaphylos patula H. S. Gentry, S. Koch 1962-1 19765 Butte 3-4 mi. NW of Cohasset. 1066 Comment
  UC481537  Arctostaphylos patula H. F. Copeland 1924-8-11 223 Butte Jonesville Comment
  RSA381139  Arctostaphylos truei J. T. Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise. 609 Comment
  UCD52628  Arctostaphylos viscida subsp. mariposa J. I. Mallory 1968-7-1 295 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest, Butte County, California. 640 Comment
  CAS-BOT-BC47370  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51104 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47371  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51091 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47375  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51088 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48284  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown 457 Comment
  CHSC27932  Arctostaphylos viscida subsp. viscida M. S. Taylor 1976-4-24 1074 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville. 997 Comment
  OBI5723  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 mi from Chico Comment
  OBI74984  Arctostaphylos viscida subsp. viscida Hannah M. Fugle 2011-1-15 3 Butte Magalia, ca. 150 ft NW of Coutelenc rd, ca. .25 mi N of Alphy's ln. 762 Comment
  CAS-BOT-BC137550  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On a side of Pentz Road near culvert in natural drainage, ca. 1.2 east of jct of Pentz Road and Highway 99, ca. 15 mi s of Chico. 60 Comment
  CAS-BOT-BC137556  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte Between Pentz and Dry Creek. Hills 8 miles north of Oroville. Comment
  SEINET3918849  Aristida oligantha M. S. Taylor 1977-8-16 1434 Butte Abundant in Valley Grassland, near culvert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico.; 0 61 Comment
  UCD56476  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte 3.5 miles east of Honcut, La Porte Road. Comment
  SEINET8521980  Aristida oligantha Kelly W. Allred 1991-1 5480 Butte along Honcut Road, 2 miles north of junction with Palermo Road, in annual valley grassland 91 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  CHSC104811  Aristolochia californica Lowell Ahart 2010-6-12 16795 Butte Climbing on shrubs on the east side of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 216 Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  UC543751  Aristolochia californica H. L. Mason 1927-5-10 3717 Butte n.e. of Oroville (Coal Creek, Table Mt.); Table Mt.,Coal Creek Comment
  SEINET10475903  Aristolochia californica Mary Susan Taylor 1979-3-20 Taylor 1951 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC36393  Arnica dealbata Kirsten Tarp 1981-8-4 68 Butte Scotts John Creek, ca. 29 mi ne of Chico. 1828 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
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CAS-BOT-BC146272  Arrhenatherum elatius var. elatius Lowell Ahart 1981-8-15 3050 Butte Sierra Nevada. Bottom of a small wash near the dirt road, ca. 200 m west of the store at the east end of Philbrook Res. 1500 Comment
  CAS-BOT-BC90286  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  CAS-BOT-BC90290  Artemisia douglasiana John Thomas Howell 1961-9-22 36721 Butte Bank of Feather River, Oroville 53 Comment
  CDA10154  Artemisia douglasiana D. G. Kelch 2006-8-2 6 .351 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CAS-BOT-BC90291  Artemisia douglasiana Lowell Ahart 1981-9-15 3162 Butte One mile N of the Lost Creek Reservoir 1200 Comment
  RSA718436  Asarum hartwegii L. Ahart 2006-7-11 12941 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  CHSC102168  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC51851  Asclepias speciosa L. P. Janeway 1988-7-2 2976 Butte Along dirt rd 6.0 mi SW of Coyote Gap; ca 1.7 air mi S of Big Bar Mtn. 929 Comment
  SEINET10913624  Asclepias speciosa Lowell Ahart 1988-6-29 Ahart 6112 Butte Along Bean Creek Road, ca 3/4 mi SW of Johnson Ranch, ca 2 1/4 mi S of Little Bald Rock 549 Comment
  CHSC32620  Aspidotis densa M. S. Taylor; L. Hanson 1981-3-31 3459 Butte End of Spur rd, ca. 3/4 mi se of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 4 mi ne of its jct with Hwy 70 at Jarbo Gap, ca. 19 air mi n of Oroville. 914 Comment
  RSA4658  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  SEINET256566  Aster chilensis Lowell Ahart 1985-10-8 5195 Butte On the bottom and side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 55 Comment
  CDA10331  Aster oregonensis T. C. Fuller 1958-7-7 1912 Butte 1 mile north of Pulga Station. 0 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
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CHSC101704  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and 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
  CHSC46264  Astragalus tener var. ferrisiae Vernon Oswald 1989-5-1 3753 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 0.6 mi s of Biggs-Afton Hwy. 18 Comment
  CHSC37832  Athyrium distentifolium var. americanum R. Schlising; K. Tarp, J. F. Fuller 1982-7-18 4329 Butte N part of county, n of Philbrook Reservoir and se of Snow Mountain peak. On flanks of the mountain. 2057 Comment
  SEINET10841517  Athysanus pusillus Mary Susan Taylor 1973-1 Taylor 43 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET3930601  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, south of Parking Area 5 Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh.; 0 30 Comment
  CHSC37077  Atriplex heterosperma L. Ahart 1982-9-9 3766 Butte On sides of deep ditch, near water line on bare soil, ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC61036  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CHSC34769  Atriplex triangularis L. Ahart 1981-11-6 3221 Butte On sides of a deep ditch, on n side of rd near the entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC41558  Avena barbata R. L. Ondricek-Fallscheer 1982-5-26 138 Butte At sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  UCD56174  Avena barbata A. A. Heller 1914-3-18 11207 Butte 8 miles north of Oroville. Near the western base of Table Mountain. Comment
  CHSC8761  Azolla filiculoides S. Chulasmai 1966-3-25 2 Butte Highway 99 E (3 miles south of Chico) Dradger pond. Comment
  CHSC112240  Azolla microphylla Lowell Ahart 2013-4-20 18550 Butte In Wilson Creek, about 40 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  SEINET10474444  Baccharis douglasii Mary Susan Taylor 1975-10-29 Taylor 971 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  RSA726559  Baccharis pilularis L. Ahart 2007-10-30 14508 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  CAS-BOT-BC98187  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  CHSC112603  Bacopa eisenii Lowell Ahart 2013-9-20 19057 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
  UC1259003  Bacopa repens J. L. Strother 1976-8-18 1255 Butte Biggs Rice Experiment Station Comment
  CHSC35990  Balsamorhiza deltoidea J. D. Jokerst 1982-5-8 1566 Butte Road to Forbestown Resv. E of town of Forbestown. Comment
  CHSC30034  Barbarea orthoceras L. Ahart 1980-5-19 2314 Butte Along the edges of the South Fork of the Feather River, near bridge, ca. 1/8 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. 800 Comment
  UCD114266  Barbarea orthoceras E. B. Copeland 1930-6-27 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  CHSC43648  Barbarea verna Vernon Oswald 1987-4-22 2340 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. On the edge of the creek. 68 Comment
  CAS-BOT-BC16790  Barbarea verna Lowell Ahart 1980-5-19 2314 Butte Near bridge, South Fork of Feather River. 800 Comment
  SEINET10479072  Bassia hyssopifolia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5145 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC66291  Bellardia trixago Lowell Ahart 1996-6-13 7684 Butte Along the east side of Palermo Honcut Highway, Peter Ahart Ranch, about 2 3/4 miles north of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC38120  Bellis perennis R. L. Ondricek-Fallscheer 1983-5-10 174 Butte Cultivated lawn area of Butte Hall, California State Univ., Chico campus. 59 Comment
  CAS-BOT-BC75549  Berberis dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 0.1 mile north of the bridge across the North Fork of the Feather River. 350 Comment
  CAS-BOT-BC75953  Berberis pumila A. A. Heller 1962-6-15 37515 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC55058  Bergia texana Lowell Ahart 1991-9-14 6719 Butte Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  JEPS104017  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles SE of Oroville. Comment
  CHSC113483  Bistorta bistortoides Lowell Ahart 2014-7-13 19664 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UCD146244  Blennosperma nanum Daniel S. Park; D. Potter, S. M. Still, J. J. Petersen 2010-4-10 13 Butte Table Mt. 371 Comment
  SEINET10904923  Blennosperma nanum Mary Susan Taylor 1974-3-5 Taylor 77 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC33707  Boechera arcuata J. D. Jokerst 1981-5-21 1331 Butte Ca 1.0 mi NE of the town of Pulga. 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
  CAS-BOT-BC14300  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CDA1772  Brachypodium distachyon L. P. Janeway, J. Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills; Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km WNW of Canyon Creek Bridge. Comment
  UC1025797  Brachypodium distachyon L. T. Burcham 1954-8-19 303 Butte approximately 6 mi n of Oroville 396 Comment
  CHSC52148  Briza minor Donald M. Burk 1978-4-18 118 Butte 100 ft s of intersection of Broyles Road and Hwy 99, ca. 11 mi n of Chico. 59 Comment
  CHSC98970  Briza minor Lowell Ahart 2008-5-12 14739 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
  UCD57483  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles N of Oroville. Comment
  CHSC31510  Brodiaea coronaria L. Ahart 1973-5-24 222 Butte Peter Ahart Ranch, Honcut. 45 Comment
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Jun 17 2014
  SEINET10472612  Brodiaea coronaria Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4686 Butte Along edge of Hurleton Swedes Flat Rd, ca. 2 mi S of Forbestown Rd, ca. 12 mi SE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC27305  Brodiaea elegans T. B. Devine 1977-5-22 399 Butte Wurlitzer Farm, Vina Prairie. Beside Haile Rd. ca 1 mi sw of Hwy 99. 57 Comment
  SEINET10472613  Brodiaea elegans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4146 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  CHSC22948  Brodiaea minor Robert A. Schlising; Et al. 1964-6-11 2721 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  CHSC91471  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south 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. 748 Comment
  JEPS107547  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south 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 748 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-BC484501  Brodiaea minor H. L. Mason 1927-5-9 3709 Butte Flats of the Sacramento Valley, 12 miles west of Oroville Comment
  SEINET10971334  Brodiaea minor Mary Susan Taylor 1980-5-31 Taylor 2761 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
  SEINET10472700  Brodiaea pulchella Mary Susan Taylor 1975-3-10 Taylor 408 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
  JEPS110493  Brodiaea sierrae Robert E. Preston 2004-6-19 2261 Butte 1.3 mi W of Hurleton, along Forbestown Rd 434 Comment
  JEPS93810  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte about 2 1/2 air mi ne of Forbestown (on se side of dirt road to the Forbestown Reservoir, about 1 mi ne of Forbestown Road) 883 Comment
  NY990638  Brodiaea sierrae R. Preston 2004-6-19 2261 Butte 1.3 mi. W of Hurleton, along Forbestown Rd. 434 Comment
  SEINET3885117  Brodiaea volubilis Margaret J. Williams 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road.; 0 Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  SEINET10830989  Bromus Mary Susan Taylor 1978-7-21 Taylor 1807 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 miles N of Lake Madrone, ca. 19 miles NE of Oroville; Yellow Pine Forest. Comment
  SEINET10967307  Bromus carinatus M. E. Banning 1969-7-3 Banning 10 Butte Across from Chico Jr. Hi, on S. side of Memorial Way Chico. 61 Comment
  CHSC27294  Bromus catharticus P. Moyer 1972-4-16 184 Butte CSUC campus. S bank Chico Ck., w of New Dorm Bridge. 60 Comment
  SEINET10791264  Bromus diandrus Barbara L. Wilson 1968-3-1 Wilson 79 Butte S of greenhouse on CSC campus. 59 Comment
  SEINET6778879  Bromus diandrus M. Maynarel 1975-5-15 Butte Chico, Abandoned field Comment
  CAS-BOT-BC155464  Bromus hordeaceus Javier Penalosa 1962-6-18 2464 Butte Near Confluence of French and Peavine Creeks. 609 Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CAS-BOT-BC162364  Bromus madritensis John Thomas Howell 1961-9-22 36782 Butte Sierra Nevada. Jarbo Gap, Feather River Highway. Comment
  CHSC68912  Bromus orcuttianus Lowell Ahart 1997-7-11 7752 Butte South side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC73881  Bromus orcuttianus B. Castro 1997-6-13 741 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  UC600592  Bromus orcuttianus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  SEINET10507669  Bromus rubens Mary Susan Taylor 1980-4-1 Taylor 2423 A Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET11683502  Bromus rubens Unknown 1969-1 268 Butte just E of trail to Salmon Hole in Upper Bidwell Park (E of Chico) 61 Comment
  CAS-BOT-BC161612  Bromus sterilis Lowell Ahart 1977-6-16 1474 Butte Peter Ahart Ranch, Honcut. North Honcut Creek. 50 Comment
  CHSC61534  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte At Camp 18. 1158 Comment
  CHSC50850  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1990-7-19 4366 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 2011 Comment
  UC1609481  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  CHSC113966  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte Southeast part of a large wet meadow, about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS114726  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC40398  Callitriche heterophylla var. bolanderi Ahart; Jokerst 1985-5-10 4946 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC46349  Callitriche heterophylla var. bolanderi Lowell Ahart 1989-5-28 6278 Butte Along small streams, south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC51361  Callitriche heterophylla var. bolanderi V. Oswald; L. Ahart, L. Hanson 1990-8-14 4439 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.75 mile west of the north end of Sly Creek Reservoir. In a pool. 1219 Comment
  CHSC103743  Callitriche marginata Lowell Ahart 2010-5-22 16711 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
  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
  CHSC29786  Calocedrus decurrens M. S. Taylor 1980-5-27 2698 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  NY43613  Calocedrus decurrens S. Bianco 1995-11-9 1051 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
  RSA769227  Calocedrus decurrens L. Ahart 2009-11-19 16548 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
  CHSC57546  Calochortus albus Robert C. Hill 1990-4-12 15 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  HSC38016  Calochortus albus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2476 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CAS-BOT-BC487816  Calochortus coeruleus Lowell Ahart 1970-5-19 s.n. Butte Along Doon Grade, near Paradise 914 Comment
  CAS-BOT-BC489973  Calochortus leichtlinii C. C., Mrs. Bruce 1897-7-1 s.n. Butte Mountains Comment
  CHSC2925  Calochortus luteus W. Fitzwater 1958-4-26 Butte Humboldt Rd., Chico area. Comment
  CHSC67727  Calochortus luteus James D. Jokerst; M. S. Taylor 1980-5-5 712 Butte SW of junction of Rock Creek Rd. and Cohasset Hwy. Several miles N of Chico. Comment
  UC1134481  Calochortus luteus G. E. Sindel 1934-4-25 70 Butte 3 mi ne Honcut; Marysville Quad. 30 Comment
  CHSC100829  Calochortus monophyllus Kelly Beane 1981-4-20 12 Butte Ca. 14 mi. e of Chico. 6 mi. e of Butte Creek (Covered Bridge) on Honey Run rd. On cut bank of rd. 152 Comment
  CHSC11053  Calochortus monophyllus Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC3827  Calochortus monophyllus R. L. Adams 1964-4-2 67 Butte S. roadside 1/2 mi. W. Ten Mile House on Hwy. 32, 7 mi. E. Chico. Comment
  CHSC38874  Calochortus monophyllus Vernon Oswald 1983-3-19 194 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 0.3 mi e of Brown's Hole. 231 Comment
  CHSC40405  Calochortus monophyllus Lowell Ahart 1985-3-22 4849 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 4500 Comment
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Dec 26 2009
  CHSC33858  Calochortus nudus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 852 A Butte Chico meadows, ca 100 met N of Scout Rd, 1.1 mi W of it's jct with Humboldt Rd. 1341 Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  SEINET7073602  Calochortus weedii A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
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Jul 17 2018
  JEPS120843  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CAS-BOT-BC270050  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  CAS-BOT-BC106081  Calycadenia oppositifolia John Thomas Howell 1951-6-26 27513 Butte Feather River Canyon, Sierra Nevada 213 Comment
  CHSC62711  Calycadenia oppositifolia L. P. Janeway 1993-5-30 4363 Butte Above Ponderosa Way, 1.3 mi northeast of Coutolenc Road; ca 1.3 mi north-northeast of Magalia. 563 Comment
  JEPS117929  Calycadenia oppositifolia John Dittes, Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Upper Bidwell Park road west of Parking Lot-R (approximately 6.7 air-miles northeast of Chico, 2.3 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main); Cascade Range Foothills 228 Comment
  UC1971666  Calycadenia oppositifolia 1977-7-6 2032 Butte just SW of Bloomer Hill Lookout on Encina Grande Road, 4.6 mi from jct with Quincy/Oroville Hwy (very near GDC 699) 831 Comment
  UC726317  Calycadenia oppositifolia A. A. Heller 1929-5-15 14876 Butte Richardson Springs Road Comment
  SEINET10473679  Calycadenia oppositifolia Mary Susan Taylor 1980-5-31 Taylor 2753 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
  JEPS20224  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 mi se Chico Comment
  RSA724858  Calycadenia spicata B. Castro, L. P. Janeway 2005-6-5 1481 Butte About 6 air miles southeast of Chico, in bottom of canyon SE of Neal Road, about 100 feet northwest of intermittent creek. 85 Comment
  CHSC30285  Calycadenia truncata M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2296 Butte S side of rd from Magalia serpentine down to Feather River, ca. 0.5 mi up from the river. 670 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
  RSA0118938  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  POM253181  Calycadenia truncata subsp. truncata A. A. Heller 1938-6-14 15152 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CAS-BOT-BC90926  Calycanthus occidentalis Helen M. Edwards 1917-6-6 s.n. Butte De Sabla [Desabla]. Comment
  CAS-BOT-BC90929  Calycanthus occidentalis Clarence R. Quick 1952-7-1 52 -115 Butte Sierra Nevada. Mile Creek Road between Feather River Highway and Coyote Gap. Comment
  RSA168723  Calycanthus occidentalis R. M. Straw 1962-6-26 2194 Butte Canyon of Middle Fork of the Feather River near Millsaps Bar. [Milsap Bar] 305 Comment
  SFV1339  Calycanthus occidentalis M. L. Vincent 1960-7-18 54 A Butte Sierra Nevada 0.5 miles west of 5330 Harrison Road in Paradise. 530 Comment
  JEPS117419  Calyptridium monospermum Lowell Ahart 2010-9-28 17251 Butte On damp black soil, about 20 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
  UC436306  Calyptridium monospermum E. B. Copeland 1930-6-28 Butte Jonesville, Scotch John Jonesville 1750 Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC95113  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  SEINET10463084  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte ON RD FROM PRATTVILLE TO CHICO NEAR CHICO 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
  UC177576  Campanula scouleri H. M. Hall 1914-7-1 9798 Butte near Butte Meadows (Sierra Nevada Mountains); Sierra Nevada Mountains 1280 Comment
  CAS-BOT-BC37064  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC27055  Cardamine breweri Lowell Ahart 1978-5-31 1748 Butte South Fork of the Feather River. Found along the edge of the S. Fork. Found .5 mi above the Golden Trout Crossing on S Fork. Ca 4 mi west of Sly Creek Res. which is w of Strawberry Valley, Yuba County. Found only in this one area near the log bridge across the river. 750 Comment
  CAS-BOT-BC37375  Cardamine californica Lowell Ahart 1975-4-1 s.n. Butte Sierra Nevada. About 5 miles northwest of Forbestown. 426 Comment
  CHSC3612  Cardamine californica R. Jaegel 1966-3-2 19 Butte Collected 6 miles Northeast of Chico, in Upper Bidwell Park along the north bank of Butte Creek. Comment
  CAS-BOT-BC37878  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
  CHSC61208  Cardamine oligosperma Vernon H. Oswald; Lowell Ahart 1993-3-24 5246 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  SEINET3013179  Cardamine oligosperma Sherri Wemple 1992-6-16 8 Butte Butte County, CA Covered Bridge 10.2 km SE of Chico Comment
  UCD114532  Cardamine oligosperma L. Ahart 1974-2-25 304 Butte Peter Ahart Ranch in Honcut. 15 Comment
  CHSC60578  Cardamine pachystigma Vernon H. Oswald; Lowell Ahart 1993-4-21 5293 Butte Path along Butte Creek Canal, ca. 1.0 mi N of its jct. with Hendricks Canal, N of De Sabla. 853 Comment
  CDA42896  Carduus pycnocephalus subsp. pycnocephalus L. Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC104809  Carex Lowell Ahart 2010-4-23 16579 Butte Lawn of home #1082, near the middle of and north side of E7th Street, between Sycamore Street and Linden Street, Chico. 63 Comment
  JEPS120929  Carex Lowell Ahart 2013-5-27 18710 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC45074  Carex abrupta Vernon Oswald 1987-6-9 2964 Butte Scotts John Creek where it crosses the connector road between Humboldt and Humbug roads, ca. 2.5 mi e of Jonesville. 1755 Comment
  CHSC92355  Carex abrupta Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10504 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262). (WGS 84) 1551 Comment
  CHSC94395  Carex angustata Lowell Ahart 2006-8-15 13180 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
  OBI49295  Carex barbarae Lewis S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  OBI69227  Carex barbarae Kari Fisher 2000-11-10 45 Butte Chico State Campus, along Big Chico Crk 79 Comment
  SEINET7551511 Image available Carex barbarae Unknown 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. Oroville Dam 7.5' quad. Comment
  CHSC104785  Carex bolanderi L. P. Janeway 2010-6-19 10029 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC41246  Carex brainerdii J. D. Jokerst 1985-5-20 2512 Butte Ca. 1 mile north of Stirling City, along edge of dirt road several hundred meters NW of Breedlove Reservoir. 1127 Comment
  CHSC52846  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3079 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CAS-BOT-BC422334  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-knothing Creek, 2.1 air km S of top of Quartz Hill, northern Sierra Nevada Highlands (n SNH) 1000 Comment
  SD257096  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca. 4.0 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS105631  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1100 Comment
  JEPS116021  Carex densa Lowell Ahart 2009-6-3 15816 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC52858  Carex echinata subsp. echinata L. P. Janeway 1988-7-2 2944 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC52862  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising 1988-7-22 3072 Butte Seep just above the High Lakes Road 3.4 mi W of the pass. 1905 Comment
  CHSC102592  Carex feta L. P. Janeway; B. Castro 2009-7-4 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC105486  Carex feta B. Castro 2010-6-19 100028 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC45709  Carex feta L. P. Janeway 1987-5-10 2046 Butte Mdw at jct of The Skyway and Doe Mill/Humbug Rd (just N of DeSable Res.). 838 Comment
  CHSC71196  Carex feta Lowell Ahart 1998-6-9 7990 Butte Large seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS114981  Carex feta Lowell Ahart 2008-6-13 14818 Butte East side 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
  POM213963  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CHSC43886  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2418 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC43898  Carex heteroneura var. heteroneura L. P. Janeway; C. A. Janeway 1986-8-31 1806 Butte Along Scotts John Cr at crossing of Jonesville-to-Humbug Summit Rd (26N27), 3 mi from Humboldt Rd. 1737 Comment
  CHSC36894  Carex hirtissima L. Ahart 1982-6-1 3529 Butte A little south of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC48550  Carex hoodii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3144 Butte Southwest-facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC52913  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3019 Butte Forest floor between the Humboldt-to-Humbug Road, Butte Creek House, and Humbug Road. 1798 Comment
  CHSC45055  Carex lemmonii Vernon Oswald 1983-7-6 825 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  JEPS105283  Carex lemmonii Dean W. Taylor 1995-8-6 15396 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Northern Sierra Nevada 1706 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
  UC478550  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville 457 Comment
  JEPS103108  Carex luzulina var. ablata L. P. Janeway, B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CHSC52281  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-1 2922 Butte Rocky edges of Summit Lake (flank of Snow Mtn). 1889 Comment
  CHSC105477  Carex multicaulis L. P. Janeway 2010-6-19 10017 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  CHSC9145  Carex multicaulis R. J. Swift 1970-4-21 85 Butte Alongside of Skyway ca. 1.5 miles N.E. of Magalia. 670 Comment
  SEINET10752877  Carex multicostata Vernon H. Oswald, Lowell Ahart 1988-7-26 Oswald 3630 Butte Snopw Mt. region located ca. 6 air mi SE of Jonesville. Comment
  CHSC33862  Carex nudata J. D. Jokerst 1980-4-1 536 Butte East Branch Mud Creek. Comment
  CHSC52240  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 Comment
  SEINET7572224 Image available Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte On the north side of Richvale Highway, about 1/2 mile east of Richvale. 32 Comment
  CDA13295  Carex stipata var. stipata G. F. Hrusa, T. D. Wilfred 1996-7-9 13143 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET7576411 Image available Carex straminiformis Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11381 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  CHSC46042  Carex texensis L. P. Janeway 1987-4-28 2010 Butte CSU, Chico campus. Semi-wild area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  RSA769160  Carex texensis P. F. Zika 2010-6-22 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, south of Mansion Ave., Chico. 60 Comment
  SEINET6331714 Image available Carex vesicaria H. F. Copeland 1932-8-19 s.n. Butte vicinity of Jonesville, Lassen National Forest 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
  JEPS124250  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to old road and Highway 32, about 6 miles (air) northeast of Chico. Comment
  JEPS18862  Castilleja affinis subsp. affinis Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5602 Butte 0.3 mi n and below Nelson Bar road junction with the Pentz-Magalia road (along Nelson Bar road, 1.5 mi s and above bridge across West Branch of Feather River, on the n side of the canyon) 304 Comment
  CHSC90099  Castilleja applegatei Suzanne Hermansen 1991-4-20 21 Butte Ca. 4 mi nw of Cherokee. 2 1/4 mi ne of jct of Pentz Magalia Hwy and Hwy 70. Roadside cut. 304 Comment
  HSC38034  Castilleja applegatei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2487 Butte Just E of Magalia Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CHSC114974  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 B Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  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
  SD7119  Castilleja applegatei subsp. pinetorum Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  CAS-BOT-BC255462  Castilleja applegatei var. pinetorum Peter H. Raven 1954-4-17 6619 Butte 10 miles above Oroville on road to Pulga Comment
  UC1562305  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1990-7-19 4367 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 0.4 mi w of the Plumas County line) 2011 Comment
  UC426962  Castilleja arachnoidea E. B. Copeland 1930-7-12 468 Butte above Jonesville 2100 Comment
  CHSC1810  Castilleja attenuata H. Summers 1929-3-25 Butte Richardson Springs Road. 106 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CDA41336  Castilleja attenuata T. C. Fuller 1958-4-15 3804 Butte 1 mile south of Oroville. 0 Comment
  CHSC43155  Castilleja campestris subsp. campestris R. A. Schlising 1979-4-15 3368 Butte Richvale vernal pools. 1/4 mile S of jct Hwy 162 (E to Oroville) and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  JEPS124204  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte About 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. Comment
  JEPS93845  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  CDA33627  Castilleja lineariloba R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CAS-BOT-BC241125  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1280 Comment
  UC426961  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville 1500 Comment
  JEPS31898  Castilleja tenuis A. A. Heller 1914-6-22 11509 Butte Chico Meadow 1219 Comment
  CHSC11994  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville. 1550 Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CAS-BOT-BC48818  Ceanothus cuneatus A. A. Heller 1914-3-19 11210 Butte Canyon of Big Chico creek 76 Comment
  SEINET10493628  Ceanothus cuneatus Mary Susan Taylor 1975-4-26 Taylor 523 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
  CHSC38636  Ceanothus cuneatus var. cuneatus Vernon Oswald 1983-2-26 102 Butte Upper Bidwell Park, Chico, on the north slope at the level of the e end of Horseshoe Lake. 137 Comment
  CAS-BOT-BC64445  Ceanothus diversifolius Clarence R. Quick 1964-7-9 64 -72 Butte At head of Concow Creek. 1082 Comment
  CHSC46798  Ceanothus diversifolius R. A. Schlising; P. Broyles 1988-7-9 4576 Butte E of Paradise and Magalia, and N of Oroville and Jarboe Gap; along Rim road. 792 Comment
  CAS-BOT-BC50814  Ceanothus integerrimus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CAS-BOT-BC50822  Ceanothus integerrimus John Thomas Howell 1973-7-9 49698 Butte Sierra Nevada - near Bear Ranch Creek, Feather River Highway 457 Comment
  CHSC101156  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC52464  Ceanothus integerrimus Kate A. Hanson 1977-4-18 Butte Ca 0.5 m N of the Skyway, ca. 0.8 km ESE of Paradise. 600 Comment
  RSA755641  Ceanothus integerrimus L. Ahart 2009-5-15 15693 A Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  SEINET267155  Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-6-17 1620 Butte Pence Road south of Paradise. 395 Comment
  UC725821  Ceanothus integerrimus A. A. Heller 1938-5-28 15126 Butte near Pulga (along the Feather River Hwy.) 420 Comment
  SEINET10837532  Ceanothus integerrimus Mary Susan Taylor 1976-4-27 Taylor 1087 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  SEINET13945960 Image available Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-1 1620 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min TOPO map); ca 1300 ft alt., T21N R4E SEC6 396 Comment
  CHSC3514  Ceanothus integerrimus var. macrothyrsus John Francis 1966-4-16 107 Butte 1.5 miles E. of covered bridge (Honey Run); growing in grass-covered area beside road. 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
  CAS-BOT-BC51726  Ceanothus lemmonii W. I. Follett; E. B. Follett 1948-6-1 s.n. Butte Calif. Hwy. 24, 6.2 mi. N. of West Branch Feather River Comment
  RSA300946  Ceanothus lemmonii D. C. Michener 1982-7-28 4141 Butte 4.4 miles SE of jct with 32 on Garland road, 3.1 miles NW of jct of Powellton road and Skyway road near De Sabla Comment
  RSA481917  Ceanothus prostratus Aaron Liston 1988-3-15 6972 Butte East of Cohasset, Ponderosa Way 500 Comment
  SEINET10493652  Ceanothus prostratus Mary Susan Taylor 1981-4-16 Taylor 3542 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  SEINET10493653  Ceanothus prostratus Mary Susan Taylor 1974-4-30 Taylor 196 Butte Along Cohasset Road, NE of Chico. Comment
  SBBG128464  Celtis australis L. Ahart, L. Hanson, K. LeCoq, J. Guardino 2012-4-27 17910 Butte N side of Centennial Avenue, Lower Bidwell Park; Chico 80 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  UCD130049  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte Stilson Canyon east of Chico. Comment
  SFV3800  Centaurea solstitialis M. L. Vincent 1960-7-12 95 Butte Sierra Nevada 4 miles south of Paradise. Nelson Bar Road, off Pentz Road, near flume. 300 Comment
  CHSC20488  Centaurium tenuiflorum M. S. Taylor 1975-6-25 793 Butte Ca. 100 ft w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC28481  Centaurium tenuiflorum Robert Schlising 1979-8-17 3468 Butte 1/4 mi s jct Hwys 162 to Oroville and 99; along the latter and across from Thermalito Afterbay; widespread at ditch margins but not in grassland. Comment
  CHSC105225  Centaurium venustum Lowell Ahart; John Dittes 2010-7-19 16908 Butte At the homestead, west of the poor dirt road, about 3.6 miles (air) southwest of Manton, about 3.6 miles (air) north of Highway 36 and Lane Valley Road intersection. 505 Comment
  UC754006  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  CHSC75264  Cerastium fontanum subsp. vulgare Lowell Ahart 1999-5-24 8079 Butte In the lawn, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC35965  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, in slough at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CHSC46613  Ceratophyllum demersum Vernon Oswald 1989-8-1 3910 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In Little Dry Creek at the bridge ca. 1 mi n of Gridley-Colusa Hwy. 18 Comment
  SEINET12161338  Cercis occidentalis Unknown 1977-1 29 Butte E side of Hwy 32 at Tenmile House. 9.2 mi NE of Chico. Paradise Quadrangle, see comments 366 Comment
  CAS-BOT-BC136999  Cercocarpus betuloides var. betuloides Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CAS-BOT-BC137004  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  CHSC52368  Cercocarpus betuloides var. betuloides L. P. Janeway 1989-5-19 3267 Butte Near upper SE'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  CHSC86851  Chaenactis glabriuscula var. heterocarpha L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7787 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  CHSC31398  Chamaebatia foliolosa Herb Allan McLane 1980-4-25 13 Butte Section 4 of NE1/4 of SE1/4 of NW1/4 of NE1/4 of SE1/4. E side of Ponderosa Way, Plumas National Forest, MDM. 609 Comment
  SEINET10493562  Chamaesyce Lowell Ahart 1990-10-3 Ahart 6617 Butte On the bottom of the East Fork of the Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E NW/S16. 259 Comment
  SBBG27221  Chamaesyce maculata W. H. Wheeler 1935-10-24 296 Butte about building, Foreign Plant Introduction Station, Chico 76 Comment
  RSA498550  Chamaesyce nutans Willis H. Wheeler 1935-10-23 282 Butte Foreign Plant Introduction Sta., Chico. 76 Comment
  CHSC110329  Chamaesyce serpillifolia subsp. serpillifolia B. Castro; Margie Graham 2006-8-24 1604 Butte Sacramento Valley. Ca 1,8 mi W of Hwy 99 and 1 mi E of Richvale, ).25 mi N of Richvale Hwy in Cherokee Canal. On E side of canal abt 50 ft from toe of E levee. 32 Comment
  CHSC42120  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1986-11-9 5436 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  CAS-BOT-BC165954  Chamerion angustifolium E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  CHSC43697  Chamerion angustifolium subsp. circumvagum Vernon Oswald 1985-7-18 1907 Butte Butte Creek ca. 0.2 mi w of Humboldt Rd. at the road island at Cherry Hill. On the edge of a meadow. 1414 Comment
  UC474227  Cheilanthes gracillima H. F. Copeland 1920-5-22 Butte Jonesville Comment
  SEINET10966199  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3454 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CHSC42499  Chenopodium album Lowell Ahart 1987-6-9 5726 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
  SEINET10479005  Chenopodium album Lowell Ahart 1990-9-30 Ahart 6609 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-west of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 244 Comment
  CHSC51255  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  JEPS95932  Chenopodium botrys Lowell Ahart 1999-8-13 8178 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
  SEINET10479018  Chenopodium botrys Mary Susan Taylor 1979-10-5 Taylor 2226 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
  SEINET10871663  Chenopodium botrys Lowell Ahart 1984-8-19 Ahart 4781 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC31545  Chenopodium murale L. Ahart 1977-7-1 1443 Butte Near the old sheep barn. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC50360  Chenopodium pratericola Vernon Oswald; Robert McNairn 1990-6-1 4277 Butte Arroyo Chico (section not surveyed). 2815 San Verbena, northeast Chico. 62 Comment
  JEPS108956  Chenopodium pumilio Lowell Ahart 2006-9-11 13283 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
  CDA42948  Chenopodium strictum var. glaucophyllum L. Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. Comment
  UC426925  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville Comment
  POM161684  Chimaphila umbellata subsp. occidentalis E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC184907  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte Along the Midway, about 0.5 mile south of Durham. 48 Comment
  CHSC40084  Chlorogalum angustifolium R. M. Austin 1896-5-1 737 Butte Comment
  CAS-BOT-BC498819  Chlorogalum pomeridianum John Thomas Howell 1962-6-15 37426 Butte Volcanic slopes, 4 miles from Paradise on road to Oroville 106 Comment
  CHSC102377  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2009-6-19 15946 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC50679  Chorizanthe membranacea Lowell Ahart 1990-5-25 6479 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  CHSC45529  Chorizanthe polygonoides var. polygonoides L. P. Janeway 1988-5-9 2663 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  CHSC87571  Chorizanthe stellulata R. D. Fischer 2004-4-28 140 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. On top of Disk Golf Course near canyon edge and toward the middle of the course. 365 Comment
  SEINET10454838  Cicendia quadrangularis Mary Susan Taylor 1980-4-6 Taylor 2456 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 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
  SEINET10475748  Cinnamomum camphora Mary Susan Taylor Taylor 453 Butte Campus of the California State University, Chico. 61 Comment
  CHSC11784  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  UC398936  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville 1500 Comment
  CAS-BOT-BC285278  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  UC478464  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville 1650 Comment
  CAS-BOT-BC285282  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CHSC45659  Cirsium arvense Vernon Oswald 1987-7-29 3164 Butte 0.6 mi w of Coon Hollow Rd. on the dead-end spur road which parallels it on the south, ca. 2 mi (air) ne of Philbrook Reservoir. Roadside. 1783 Comment
  JEPS110393  Cirsium douglasii var. breweri Lowell Ahart 2006-8-15 13188 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SJSU11874  Cirsium occidentale var. candidissimum J. B. Willis Jr. 1969-5-3 Butte State Highway 70, 7 mi N of Oroville Comment
  CDA1322  Cirsium occidentale var. candidissimum T. C. Fuller 1959-7-6 2765 Butte 2 mi. S of Pulga; Hwy 40 Alt. ( nr. Feather River). 0 Comment
  CAS-BOT-BC228762  Cistanthe umbellata Javier Penalosa 1962-6-18 2478 Butte Near confluence of French and Peavine Crks., forest 640 Comment
  CHSC90196  Clarkia arcuata Camela J. Ott 1989-4-11 11 Butte Ca. 100 m s of covered bridge, 10.2 km ese of Chico. 200 Comment
  CHSC99641  Clarkia arcuata H. Koeth 2007-5-6 Butte Table Mountain, Oroville. UTM 10 624239E 4387760N. 451 Comment
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC86588  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7799 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek. 287 Comment
  CAS-BOT-BC164134  Clarkia concinna Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC42365  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte On roadcuts near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC84730  Clarkia gracilis subsp. albicaulis L. P. Janeway; John Hunt 2003-6-10 7824 Butte Northern High Sierra Nevada. On front of ridge into Middle Fork Feather River arm of Lake Oroville, opposite mouth of Bean Creek. 351 Comment
  CHSC88643  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 361 Butte Plumas National Forest. Poe Power House Road. 365 Comment
  UC725470  Clarkia mildrediae A. A. Heller 1938-7-2 15153 NUL Butte 2 mi w Arch Rock Tunnel; ; W of Arch Rock Tunnel, Butte Co. Comment
  UCD104578  Clarkia mildrediae B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca. 4.5 road miles NE of Brush Creek, ca. 0.2 mile SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Highway ca 0.6-0.7 mile S of its junction with USFS Road 23N60. 990 Comment
  CHSC71157  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1993-7-16 4391 Butte Southeast side of North Fork Feather River; along Hwy 70 0.4 mi north of Cresta Powerhouse. Road cutbank. 457 Comment
  CAS-BOT-BC163355  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi north-east of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls 914 Comment
  UC1606713  Clarkia mosquinii subsp. mosquinii L. P. Janeway 1995-7-15 4857 Butte 1.1 mi s of Pompys Point (s side of Watson Ridge about 2.2 mi ene of its western end); Watson Ridge 1115 Comment
  SEINET10453160  Clarkia purpurea Mary Susan Taylor 1976-4-27 Taylor 1082 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  UC246743  Clarkia purpurea subsp. quadrivulnera H. E. Brown Apr 15 1897-Apr 30 1897 212 Butte near Clear Creek 53 Comment
  CHSC88061  Clarkia purpurea subsp. viminea R. D. Fischer 2004-5-30 187 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 3.0 miles s. of this junction. UTM: 10616846E 4407606N. 420 Comment
  CHSC38567  Clarkia rhomboidea Vernon Oswald 1983-5-21 518 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  CHSC59112  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill. Near canyon bottom. 560 Comment
  CHSC86953  Clarkia rhomboidea L. P. Janeway; B. Castro 2001-6-17 7183 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy. 1000 Comment
  SD3273  Clarkia rhomboidea E. B. Copeland 1931-6-10 Butte Jonesville 1650 Comment
  CHSC50556  Claytonia lanceolata Vernon Oswald; Lowell Ahart 1990-6-20 4306 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1920 Comment
  POM219309  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jonesville; by Jones Creek. 1524 Comment
  CHSC60584  Claytonia parviflora subsp. grandiflora Vernon H. Oswald; Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  CAS-BOT-BC439427  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-6 5572 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC10812  Claytonia parviflora subsp. parviflora Lowell Ahart 1965-4-11 Butte Walsh Ranch. 60 Comment
  CHSC56760  Claytonia perfoliata Jan Monelo 1989-4-5 1 Butte At base of Pinus ponderosa and Umbellularia californica, 609 Elliott Rd, Paradise. 548 Comment
  CHSC24684  Claytonia rubra subsp. rubra D. Hattem 1976-4-10 4 Butte Population ca. 125 m e of e border of Upper Bidwell Park, Chico, ca. 50 m n of Big Chico Creek, ca. 10 mi ne of Chico. 304 Comment
  RSA0005987  Collinsia bruceae C. C. Bruce 1897-06 2063 Butte Little Chico. Comment
  CHSC38685  Collinsia heterophylla Vernon Oswald 1983-4-18 343 Butte Upper Bidwell Park, Chico, on the north rim ca. 2000 ft w of the power lines. 195 Comment
  RSA408294  Collinsia heterophylla Michael A. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Comment
  POM219368  Collinsia parviflora H. F. Copeland 1931-6-10 1521 Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  CHSC54161  Collinsia sparsiflora var. collina Lowell Ahart 1991-4-8 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  UC1521808  Collinsia sparsiflora var. collina Lowell Ahart 1984-4-3 4537 Butte 1 mi N, 2.7 mi E of Honcut; Peter Ahart Ranch, N Honcut Creek 50 Comment
  JEPS81035  Collinsia sparsiflora var. collina J. P. Smith Jr. 1973-3-22 5914 Butte 2.1 mi E of junction with US 99 and the road to Paradise, California. 121 Comment
  SBBG17300  Collinsia sparsiflora var. sparsiflora M. Vincent 1962-4-16 196 Butte Honey Run Rd, ca. 0.5 mi W of Paradise, in Butte Crk Cyn Comment
  CDA13301  Collinsia tinctoria G. F. Hrusa, T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest; E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  UC726287  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville; Feather River Highway Comment
  CHSC38590  Collomia heterophylla Vernon Oswald 1983-5-15 494 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion channel. 79 Comment
  SEINET10496938  Collomia heterophylla Mary Susan Taylor 1978-7-21 Taylor 1803 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CAS-BOT-BC180250  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte Near Stirling 1074 Comment
  RSA325146  Comandra umbellata subsp. californica M. S. Taylor, Vernon H. Oswald 1984-4-4 5373 Butte Along Humbug road, 0.5 mile E of Honey Run Covered Bridge, 6 air miles E of Chico. 183 Comment
  CHSC31892  Conium maculatum L. Ahart 1978-4-27 1673 Butte On damp soil by old sheep barn. Peter Ahart Ranch, Honcut. 50 Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 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. Comment
  CAS-BOT-BC286059  Conyza canadensis Ira L. Wiggins 1928-9-9 3348 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  JEPS115157  Conyza floribunda Lowell Ahart 2009-11-19 16549 Butte About 30 yards southeast of the gate, about 5 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
  UC429104  Corallorhiza striata R. M. Austin July, 1896 224 Butte Colby Comment
  CHSC112539  Cordylanthus pilosus subsp. hansenii B. Castro 2012-10-18 1989 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 700 ft downstream (WSW) of its crossing under the Cohasset Hwy bridge. 56 Comment
  RSA719716  Cordylanthus pilosus subsp. pilosus Michael A. Vincent, K. Levings 2006-7-29 12895 Butte NE of Chico along Rt. 32. Comment
  JEPS6678  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e of Oroville (in the Quercus Douglasii Belt) Comment
  CHSC105592  Cordylanthus tenuis subsp. tenuis Barbara L. Wilson; Richard E. Brainerd, Lawrence Janeway, Barbara Cas 2010-8-7 16244 Butte Forbestown Road. Label says Lat. and Long. indicated +/- 36 feet. 806 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
  SEINET10474212  Coreopsis lanceolata Mary Susan Taylor 1982-8-16 Taylor 4994 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC211987  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch, west side of the Sierra Nevada 1036 Comment
  CHSC20047  Cornus nuttallii M. S. Taylor 1975-4-17 480 Butte Corner of Arcadian and Sacramento Sts, Chico. Comment
  CAS-BOT-BC209588  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  UC1499975  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte 1 mi. e. Butte Meadows (small stream that flows into Butte Meadows) 1450 Comment
  CAS-BOT-BC401858  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  CHSC27207  Cotoneaster horizontalis P. Moyer 1971-11-7 55 Butte Front of Admin. Bldg. 60 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
  JEPS115291  Cotula australis Lowell Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC105268  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  SEINET3450921  Cotula coronopifolia Unknown 2003-6-23 10310 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CAS-BOT-BC291333  Cotula coronopifolia Lowell Ahart 1979-5-20 s.n. Butte 2 miles south of Palermo 35 Comment
  CHSC46737  Crassula connata Lowell Ahart 1974-4-11 387 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC54379  Crassula connata M. Bailey 1991-3-30 557 Butte Butte College Campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CAS-BOT-BC427954  Crassula tillaea Lowell Ahart 1990-1-17 6407 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 301 Comment
  CDA32002  Crataegus laevigata L. Ahart 2009-5-3 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CHSC14034  Crataegus monogyna L. W. Blaisdell 1974-4-29 10 Butte Paradise. In yard of L. W. Blaisdell. 548 Comment
  JEPS120077  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  JEPS124152  Croton setiger Lowell Ahart 2015-11-7 20620 Butte 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. Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC113528  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC116139  Crypsis schoenoides Lowell Ahart 2015-10-26 20601 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC28737  Crypsis schoenoides R. A. Schlising 1979-10-13 3500 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park; margin of river. Comment
  JEPS115035  Crypsis schoenoides Lowell Ahart 2007-10-31 14514 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
  JEPS122249  Crypsis vaginiflora Lowell Ahart 2014-9-23 19875 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC111231  Cryptantha 2012-5-31 Butte Comment
  CHSC105798  Cryptantha affinis Lowell Ahart 2010-9-21 17228 Butte On the south side of a poor dirt road, about 1mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC29961  Cryptantha flaccida R. A. Schlising; R. Banchero 1980-6-2 3616 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  CHSC94054  Cryptantha flaccida R. D. Fischer 2005-4-9 728 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant growing in the deeper soil of the roadside drainage. 518 Comment
  POM368226  Cryptantha flaccida L. Ahart, P. Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  CHSC35060  Cryptantha intermedia R. A. Schlising 1981-6-13 4081 Butte E part of county, along Milsap Bar Road, 2.7 miles S of its junction with Bald Rock Road near Brush Creek. 975 Comment
  POM252793  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  SEINET12331819  Cryptantha intermedia Unknown 1985-1 4966 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  SBBG28777  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte N Fork of Feather River, 3 mi S of Pulga 609 Comment
  CHSC33581  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte N of logging landing site, just w of the power lines off logging rd, ca. 1/2 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  CHSC40347  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  CHSC40220  Cuscuta californica Lowell Ahart 1985-6-17 5066 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  CHSC58908  Cuscuta californica var. breviflora Lowell Ahart 1992-7-21 6821 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CDA14092  Cuscuta californica var. californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13977 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC112043  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On Xanthium strumarium. On dry disturbed red soil, on the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Cental House Road, about 2 miles (air) northwest of Honcut. 35 Comment
  JEPS47093  Cuscuta indecora W. K. Studley 1910-10-31 4 d Butte Chico Comment
  CHSC48366  Cuscuta indecora var. indecora V. Oswald 1988-6-8 3364 Butte Fernandez Grant. West side of the access road in the Oroville Wildlife Area 0.3 mi s of the Vance Ave. entrance. 32 Comment
  CHSC50548  Cuscuta subinclusa Vernon Oswald 1990-7-7 4353 Butte Doe Mill Road (Ponderosa Way) between Garland Rd and the bridge over Butte Creek, ca.2.25 mi (air) east-northeast of Forest Ranch. 792 Comment
  UCD126346  Cuscuta subinclusa A. A. Heller 1914-7-22 11588 Butte near West Branch. 1066 Comment
  UC725368  Cycladenia humilis var. humilis A. A. Heller 1938-7-20 15275 Butte ridge between Inskip and Chaparral 1524 Comment
  CAS-BOT-BC190247  Cynodon dactylon Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS124150  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte About 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC3536  Cynoglossum grande John Francis 1966-4-6 80 Butte 0.3 mile from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  SEINET10497510  Cynoglossum grande Mary Susan Taylor 1980-5-8 Taylor 2617 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
  SEINET10905665  Cyperus aristatus Lowell Ahart 1983-9-17 Ahart 4431 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 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
  CHSC34198  Cyperus difformis J. D. Jokerst; L. Ahart 1981-9-26 1492 Butte Moist swale ca 110 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  JEPS115191  Cyperus eragrostis Lowell Ahart 2009-6-19 15950 Butte About 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  JEPS94723  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  RSA0037179  Cyperus eragrostis Lowell A. Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  UC1100535  Cyperus eragrostis Herbert L. Mason 1945-9-19 12736 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  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
  CHSC45114  Cyperus flavescens Vernon Oswald 1983-7-31 941 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  RSA0060841  Cyperus flavescens Lowell A. Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  SBBG128790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 100 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  JEPS119909  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC31476  Cyperus niger L. Ahart 1980-7-29 2497 Butte Along the edge of a small stream near Hurleton Swedes Flat Rd, near Hurleton. 600 Comment
  CHSC68353  Cyperus niger L. P. Janeway 1986-10-19 1926 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  JEPS116000  Cyperus niger Lowell Ahart 2009-6-30 15924 Butte Drainages in meadow 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
  JEPS98503  Cyperus niger Lowell Ahart 2000-8-23 8662 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
  UC203670  Cyperus niger A. A. Heller 1914-7-20 11581 Butte 8 mi. n. Oroville Comment
  CHSC45124  Cyperus squarrosus Vernon Oswald 1987-6-12 2987 Butte West side of Sacramento River (but technically in Butte County because of shifting channel) between Big Chico Creek and Phelan Island, ca. 0.75 mi s of Big Chico Creek. 35 Comment
  CAS-BOT-BC114075  Cyperus squarrosus Lowell Ahart 1983-9-17 4431 Butte Ca 1/8 mi NE of Kunkle Res., south of Paradise. 600 Comment
  UCSB63782  Cyperus squarrosus Ahart, Lowell 1998-7-18 Butte T20N, R4E, southeast 1/4 Section 8; along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 408 Comment
  CHSC34137  Cyperus strigosus L. Ahart 1981-9-19 3185 Butte Along edge of Feather River, ca. 100 m s of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC68409  Cyperus strigosus L. P. Janeway 1986-9-20 1873 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC68417  Cyperus strigosus L. P. Janeway 1986-10-19 1932 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  JEPS122021  Cyperus strigosus Lowell Ahart 2014-6-13 19534 Butte Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. Comment
  CAS-BOT-BC110841  Cyperus vegetus A. A. Heller 1939-8-26 15479 Butte River Road west of Chico, Lower Sonoran Life Zone Comment
  CHSC101752  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  SEINET10535612  Cystopteris fragilis Mary Susan Taylor 1980-4-18 Taylor 2519 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  SEINET10932440  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2357 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
  JEPS120086  Dactylis glomerata Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC189896  Danthonia californica Clarence R. Quick 1959-8-19 59 -46 Butte Sierra Nevada. Section Corner Meadow (east of Pulga on road between Coyote Gap and Four Trees). Comment
  CAS-BOT-BC189900  Danthonia californica Clarence R. Quick 1965-7-25 65 -18 Butte Sierra Nevada. Section Corner Meadow. Coyote Gap - Four Trees road. Comment
  CHSC49532  Danthonia unispicata Vernon Oswald 1983-6-22 741 Butte Near Humboldt Rd. (to Butte Meadows) 0.6 mi n-e of Calif. Hwy 32. 1173 Comment
  CHSC23704  Darmera peltata M. S. Taylor 1976-5-5 1119 Butte Along Bear Creek, ca. 1/4 mi s of Hwy 70, by the waterfall, ca. 30 mi ne of Oroville. Comment
  CAS-BOT-BC420352  Darmera peltata Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  CHSC43656  Datisca glomerata Vernon Oswald 1987-5-26 2929 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  SEINET10546583  Datura meteloides Lowell Ahart 1985-9-14 Ahart 5167 Butte On dry red soil on the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC113117  Datura stramonium var. stramonium Lowell Ahart 2013-11-18 19278 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
  CHSC35967  Daucus pusillus M. S. Taylor 1982-5-21 4491 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over the Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  SEINET10840961  Daucus pusillus Mary Susan Taylor 1980-6-14 Taylor 2882 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CHSC33138  Delphinium gracilentum J. D. Jokerst; M. S. Taylor 1980-4-19 614 Butte Butte Cr. Canyon 7.4 mi N of the Centerville Cemetary on Humbug Road. Comment
  CAS-BOT-BC8567  Delphinium hansenii Herbert Faulkner Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  CHSC1446  Delphinium hesperium H. Holder 1949-5-18 Butte Bidwell Park. 91 Comment
  CAS-BOT-BC8069  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  POM99888  Delphinium nuttallianum C. C. Bruce 1897-03 1916 Butte Butte Creek. Comment
  CHSC94063  Delphinium patens subsp. patens R. D. Fischer 2005-6-6 740 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico at the parking area for 10 Mile House Road trail in Bidwell Park. Collection made on a grassy ridge top near parking area. 464 Comment
  RSA0110256  Delphinium variegatum Wm B Meiggs, W. Smith 1957-4-15 s.n. Butte 1/2 mile N of fire control road from Fine Gold Creek gaging station 244 Comment
  UCD14293  Delphinium variegatum Katherine Courtney 1983-5-15 13 Butte Butte Co.; along the east side of Highway 70, 4 mi. southwest of Oroville, north of Polermo Road intersection; 60 Comment
  CAS-BOT-BC82876  Dendromecon rigida Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CHSC29239  Dendromecon rigida M. S. Taylor 1980-5-8 2592 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi. e of Hwy 32. 853 Comment
  HSC38033  Dendromecon rigida Thomas W. Nelson, Jane P. Nelson 1976-5-10 2484 Butte Just E of Magalia Comment
  SEINET10476254  Dendromecon rigida Mary Susan Taylor 1980-5-8 Taylor 2592 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC33229  Dentaria pachystigma var. dissectifolia LeRoy Ellsworth Detling 1935-4-18 1631 Butte Magalia Comment
  CAS-BOT-BC194309  Deschampsia cespitosa subsp. cespitosa A. A. Heller 1928-6-16 14621 Butte Butte Meadows Comment
  CAS-BOT-BC194306  Deschampsia cespitosa subsp. cespitosa M. S. Taylor 1978-4-24 1663 Butte Montane Meadow on N side of Old Humboldt Rd., across from Butte Meadows 1371 Comment
  HSC23363  Deschampsia danthonioides B. Wilson 1968-4-19 168 Butte 2 mi. S of Cherokee, Table Mountain. 549 Comment
  POM365021  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte near Lomo at road forking to Chico Creek. Comment
  RSA715565  Deschampsia danthonioides L. Ahart 2005-5-2 11768 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 Ord bend, about 12 miles (air) southwest of Chico. 26 Comment
  UCD80540  Deschampsia danthonioides CNPS SN Foothill Team 2005-3-31 SNFN 0073 c Butte CDFG North Table Mountain Wildlife Area, in the North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  CHSC101748  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 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 Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC23654  Dicentra formosa M. S. Taylor 1976-4-20 1078 Butte On e side of Ridge Rd, ca 100 m n of junction of Ridge Rd and Ponderosa Way, Magalia. 609 Comment
  CHSC3526  Dicentra formosa John Francis 1966-4-23 142 Butte 2.6 miles E. of Forest Ranch on Hwy. 32. Comment
  CHSC76942  Dicentra formosa Margie Collins 1894-5-1 Butte Chico. Comment
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Jul 7 2010
  CHSC19651  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  CAS-BOT-BC402381  Dicentra formosa subsp. formosa Lowell Ahart 1983-9-21 4465 Butte Near French Creek, about 2 miles north of the Sly Creek Dam, north of Strawberry Valley 900 Comment
  SEINET516313  Dicentra uniflora Vernon H. Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi NE of Hwy 32. 1382 Comment
  CHSC109154  Dichelostemma congestum Lowell Ahart 2012-5-12 18029 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico 237 Comment
  CHSC2070  Dichelostemma congestum V. Holt 1935-5-26 Butte Humboldt road 76 Comment
  SEINET10472574  Dichelostemma congestum Mary Susan Taylor 1980-5-27 Taylor 2712 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC117596  Dichelostemma multiflorum L. P. Janeway 2016-6-2 12108 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC92733  Dichelostemma multiflorum L. P. Janeway 2005-6-26 8430 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
  SEINET12050315  Dichelostemma multiflorum Unknown 1985-1 5057 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yds S of dirt road 975 Comment
  SEINET12053817  Dichelostemma multiflorum Unknown 1936-1 13338 Butte Mud Creek near Chico Comment
  CAS-BOT-BC502523  Dichelostemma volubile R. F. Hoover 1936-5-21 1171 Butte Cana Comment
  CHSC12959  Digitalis purpurea K. R. Stern 1974-6-30 5770 Butte 11.5 mi ne of Stirling City on Bald Mt. rd. 1219 Comment
  CHSC36293  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  CHSC43279  Digitaria ischaemum Lowell Ahart 1987-8-30 5858 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC43280  Digitaria ischaemum Lowell Ahart 1987-8-30 5870 Butte Road gutter, along Highway 70, about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  JEPS120151  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC41983  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC83011  Digitaria sanguinalis Lowell Ahart 2002-9-7 9926 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
  CHSC97734  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
  UCD63970  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  SEINET10560063  Digitaria sanguinalis A. Arthur Heller 1914-6-2 Heller 11476 Butte Hills 8 miles north of Oroville. Comment
  CHSC48994  Diplacus angustatus Vernon Oswald 1986-5-6 1996 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
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Aug 22 2008
  SD234187  Diplacus douglasii Virginia Pinkus Ryder 1965-4-3 379 Butte Table Mtns. Open lava meadows. 381 Comment
  CHSC3230  Diplacus grandiflorus Virginia Hagaman 1966-5-1 159 Butte At Centerville Power House, 10.3 miles east off highway 99E on Humbug road. Comment
  CHSC3304  Diplacus grandiflorus M. L. Hillier 1966-5-1 Butte Above rd. side. 7 miles from C.S.C. Admin. build. n.e. on Humbug Rd. Comment
  CHSC90161  Diplacus kelloggii T. N. Casale 1974-4-22 22 Butte On shoulder of road, ca. 3.3 mi ne of Covered Bridge on Honey Run Rd. 188 Comment
  CAS-BOT-BC154037  Diplacus torreyi A. A. Heller 1928-6-20 14664 Butte At Butte Meadows Comment
  CHSC44804  Diplacus torreyi R. Banchero 1980-6-2 178 Butte Along Hwy 32 ca 5.9 mi N of the town of Forest Ranch, 6.1 mi S of its jct with Humbolt Rd. 999 Comment
  CAS-BOT-BC154173  Diplacus tricolor A. A. Heller; H. E. Brown 1902-5-15 5554 Butte Near Biggs Comment
  SEINET223339  Diplacus tricolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-1 3312 Butte Peter Ahart Ranch, ca 2-1/2 mi N-NE of Honcut between Marysville & Oroville 30 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  UCD118778  Dodecatheon alpinum subsp. majus H. F. Copeland 1929-6-10 s.n. Butte Jonesville. 1524 Comment
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1395  Dodecatheon hendersonii J. Baynes 1929-4-20 Butte Paradise. 609 Comment
  CHSC41262  Dodecatheon jeffreyi S. C. Morey 1983-7-21 481 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCD123715  Dopatrium junceum John M. Tucker 1953-8-28 2679 Butte Biggs Rice Experiment Station. Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  UC1562498  Downingia bicornuta var. bicornuta Barbara Ertter with Lowell Ahart 1986-4-13 5902 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  CHSC47396  Downingia cuspidata Lowell Ahart 1978-5-2 1701 Butte Growing in shallow water in a vernal pool, near the large parking area on top of Table Mountain, about 7 miles north of Oroville. 426 Comment
  UC196263  Downingia ornatissima var. ornatissima A. A. Heller 1914-4-17 11305 Butte 8 mi n Oroville Comment
  SEINET12326976  Downingia pulchella Unknown 1974-1 22 Butte Locally abundant at intersection of Broyles Rd and Hwy 99, ca 6 mi N of Chico 69 Comment
  CHSC12173  Draba verna var. aestivalis Lowell Ahart 1973-2-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46481  Draba verna var. aestivalis Lowell Ahart 1975-3-4 702 Butte Along the west side of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC38070  Drosera rotundifolia R. E. Preston 1982-6-25 318 Butte Ca. 1.2 mi S of Inskip. ... Field redacted by CHSC, contact the data manager for more information 1420 Comment
  CHSC51867  Drosera rotundifolia L. P. Janeway 1987-6-27 2364 Butte Large mdw on E slope of Bald Mtn along the Concow ... Field redacted by CHSC, contact the data manager for more information 1706 Comment
  UCD123991  Drosera rotundifolia Barry Rice 2011-7-20 BR 110709 Butte Mallory Meadow. 1350 Comment
  SEINET10448023  Drosera rotundifolia Mary Susan Taylor 1982-8-16 Taylor 5004 Butte T25N R5E ne/sw sec 31. Pulga NW quad. N side of spur rd off 52513, 1 mi s of Jones Meadow, ca. 6 mi ne of Stirling City. Seep area; 5900 ft. 1798 Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  UC114407  Drymocallis glandulosa var. glandulosa Mrs. R. M. Austin July 1896 Butte Colby Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CAS-BOT-BC70853  Dryopteris arguta Lowell Ahart 1990-3-19 6417 Butte on the south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 33 Comment
  CHSC101827  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC3409  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  CHSC84219  Dryopteris arguta Lowell Ahart 2003-7-12 10375 Butte On the sides of a wash, on the west side of Milsap Bar Road, about 1/8 mile south of the bridge across the North Fork of the Feather River, about 4 miles (air) northeast of the Brush Creek Work Center, about 20 miles (air) northeast of Oroville. 997 Comment
  SEINET10530135  Dryopteris arguta Mary Susan Taylor 1976-3-6 Taylor 1012 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
  CHSC3244  Dudleya cymosa Virginia Hagaman 1966-4-17 118 Butte 6.3 miles east of Chico State College, on the side of road in Upper Bidwell Park above Salmon Hole. Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC42110  Dysphania ambrosioides Lowell Ahart 1986-11-7 5419 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC48291  Dysphania ambrosioides Vernon Oswald 1983-7-25 913 Butte River Road at the washout w of Chico. Comment
  CHSC75996  Dysphania botrys Lowell Ahart; Vernon H. Oswald 1999-8-13 8178 Butte Disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southwest of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC76276  Dysphania pumilio Lowell Ahart 1999-9-21 8279 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
  CHSC34147  Echinochloa crus-galli L. Ahart 1981-9-19 3180 Butte Along the edge of Hwy 70, just n of Arch Rock Tunnel, ca. 10 mi s of Storrie. 550 Comment
  UC1131534  Echinochloa crus-galli H. S. Yates 1936-8-14 6120 Butte 10 mi s Durham; Chico Quad. Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  SEINET10564167  Echinochloa crus-galli H. E. Brown 1896-10-2 Brown 114 Butte Collected Near Oroville, 52 Comment
  CDA1998  Echinochloa oryzicola J. Harroun 1958-9-16 1232 -58 Butte 0 Comment
  CHSC111507  Elatine Lowell Ahart 2014-4-17 19380 Butte On dry gray clay soil, bottom of a rice field, about 20 yards north of Hailton Road, about 1/2 mile east of Riceton Highway, about 2 1/2 miles (air) noth of Biggs. Agricultural. 30 Comment
  JEPS122149  Elatine Lowell Ahart 2014-8-8 19697 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 east of Honcut. Comment
  JEPS124104  Elatine Lowell Ahart 2015-5-17 20192 Butte About 1 3/4 miles west of Honcut. Comment
  JEPS124248  Elatine Lowell Ahart 2015-3-31 19983 Butte About 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  UC1609415  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CHSC45276  Elatine heterandra Vernon Oswald 1988-4-5 3269 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC30983  Elatine rubella M. S. Taylor 1978-7-22 1850 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  SEINET10836546  Eleocharis Mary Susan Taylor 1978-6-24 Taylor 1668 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  JEPS117614  Eleocharis acicularis var. acicularis Lowell Ahart 2010-6-9 16776 Butte 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  CHSC78561  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
  CAS-BOT-BC113452  Eleocharis bella Lowell Ahart 1984-7-19 4728 Butte Ca. 1 1/2 mi SE of Bald-Mountain, 3/4 mi W of Oak Point, ca. 4 mi NE of Stirling City. 1500 Comment
  JEPS98443  Eleocharis bolanderi Lowell Ahart 2000-5-30 8410 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC42382  Eleocharis engelmannii Lowell Ahart 1987-5-10 5607 Butte In an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC84012  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET8795265 Image available Eleocharis engelmannii J. M. Tucker 1953-8-28 2677 Butte Biggs Rice Experiment Station Comment
  CHSC11929  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville. In and beside the 'Lily Pond. 1750 Comment
  CHSC38906  Eleocharis macrostachya Vernon Oswald 1983-5-31 594 Butte Upper Bidwell Park, Chico, 750 ft n of Upper Park Rd. and 2600 ft w of the power lines. 121 Comment
  CHSC45229  Eleocharis macrostachya J. D. Prouty 1980-4-7 Butte Roadside ditch at jct Palermo-Honcut Hwy and Cox Lane; ca 9 mi S of Oroville. 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
  UCD49747  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville, Butte County. In and beside the 'Lily Pond,' a permanent pool, warm in summer. 1750 Comment
  SEINET10971840  Eleocharis ovata Mary Susan Taylor 1978-7-22 Taylor 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CDA38987  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte On the north margin of a large wash, 200 yards east of the road crossing, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 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
  CHSC69737  Eleusine indica Lowell Ahart 1997-10-25 7946 Butte Lawn, at the Butte County Historical Society museum, Oroville. 60 Comment
  CHSC69974  Eleusine indica L. P. Janeway 1997-10-5 5367 Butte Campus of California State University, Chico; within the city of Chico. In landscaping around Holt Hall. 60 Comment
  CHSC37397  Elodea canadensis R. A. Schlising 1980-8-31 3979 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 49, along latter and across from Thermalito Afterbay. Comment
  SEINET10506997  Elymus Mary Susan Taylor 1978-7-21 Taylor 1794 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CHSC84055  Elymus caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  UCD61425  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  UCD61886  Elymus glaucus L. E. Hazeltine 1916-7-13 Butte Chico. Comment
  CHSC87922  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 10959 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC44919  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  JEPS94566  Elymus stebbinsii Lowell Ahart 1997-7-11 7744 Butte road cut on n side of dirt road se Cold Creek (about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City) 1219 Comment
  CHSC1467  Enemion occidentale M. Anthony 1953-3-9 Butte Forest Ranch. 548 Comment
  CHSC2366  Enemion occidentale R. Carter 1965-2-13 148 Butte Found 1.5 mi. from Bangor Hwy. on Swedes Flat Rd. on S bank of road. 304 Comment
  UC600545  Epilobium brachycarpum H. F. Copeland 1932-7-26 Butte Butte Creek Canyon Jonesville (along fisherman's trail) Comment
  SD3257  Epilobium brevistylum E. B. Copeland 1929-7-25 Butte Jonesville. 1500 Comment
  CHSC94256  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2006-7-16 12986 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS117420  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2010-9-28 17248 Butte On damp rocky soil, along west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  POM214002  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville. 1500 Comment
  JEPS119636  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC94408  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC70340  Epilobium minutum R. A. Schlising 1980-6-23 3771 Butte SE part of county; 1.2 mi S of S end Sly Creek Reservoir Dam, at Strawberry Valley Creek (=2.2 mi N of La Porte Road). Roadside. 1059 Comment
  CHSC64200  Epilobium oregonense S. C. Morey 1983-7-25 627 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  UC725503  Epilobium torreyi A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  CHSC20899  Equisetum arvense M. S. Taylor 1975-8-31 891 Butte On Ernies Island, in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 609 Comment
  CAS-BOT-BC57257  Equisetum laevigatum Lowell Ahart 1983-4-22 3937 Butte Peter Ahart Ranch, banks of North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  RSA285081  Equisetum laevigatum J. T. Howell 1975-6-15 51072 Butte Skyway between Chico and Paradise at Butte Creek. 61 Comment
  CHSC49542  Eragrostis cilianensis V. Oswald; R. Cunningham 1988-8-6 3682 Butte In s Chico, s of Park Ave., near the end of Paseo Campaneros. In the garden of Ruth and Glenn Cunningham. 64 Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 Comment
  CHSC97685  Eragrostis hypnoides Lowell Ahart 2007-11-3 14559 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS115033  Eragrostis hypnoides Lowell Ahart 2007-10-31 14522 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
  CHSC49242  Eragrostis mexicana subsp. virescens Vernon Oswald 1988-8-8 3686 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In irrigation ditch bordering Nelson Rd. 47 Comment
  HSC101846  Eragrostis pectinacea J. P. Smith, J. O. Sawyer 2007-9-2 12417 Butte Junction of Central House Rd. and State Rte. 1919 265 Comment
  CHSC113098  Eragrostis pectinacea var. miserrima Lowell Ahart 2013-10-12 19107 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC47617  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 667 Butte On the bottom of a swale, Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  UC73441  Eremocarpus setiger H. E. Brown 1896-10-9 112 Butte near Clear Creek 53 Comment
  CHSC35048  Eremogone cliftonii R. Schlising 1980-7-11 3882 Butte NE part of county at south end of Walker Plains. 1536 Comment
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Jul 8 2014
  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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Jul 8 2014
  CHSC24427  Ericameria arborescens Lowell Ahart 1976-10-13 Butte 1/4 mi w of Pinkard Creek, ca. 2 mi nw of the Sly Creek Reservoir, along road. 762 Comment
  CHSC33240  Ericameria arborescens R. A. Schlising; A. Ratcliff, R. Banchero 1980-9-6 3983 Butte 5 mi SE of Feather Falls, roadside. Comment
  CAS-BOT-BC291276  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Near Jonesville. Summit of Humboldt Road 2133 Comment
  CHSC43241  Erigeron bonariensis Lowell Ahart 1987-9-24 5897 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SFV11413  Erigeron divergens M. L. Vincent 1964-4-9 544 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  UC600740  Erigeron philadelphicus var. philadelphicus H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  SEINET10938057  Erigeron strigosus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4218 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  SFV2958  Eriodictyon californicum M. L. Vincent 1962-4-19 213 Butte Sierra Nevada Humbug Road, 3 miles northeast of Centerville. 425 Comment
  UCD119303  Eriodictyon lobbii Evans Bros. 1933-7-25 s.n. Butte Durham. Comment
  CHSC38611  Eriogonum luteolum var. luteolum Vernon Oswald 1983-8-2 947 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  CHSC39265  Eriogonum luteolum var. luteolum Lowell Ahart 1983-6-30 4181 Butte Found along the dirt road, about 1 1/2 miles northeast of Concow Res. Section 1. 550 Comment
  SEINET10904472  Eriogonum luteolum var. luteolum Mary Susan Taylor 1981-7-10 Taylor 4060 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC39137  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-8-31 4383 Butte N part of county, S of Butte Meadows along Humboldt Road; at immediate roadside. 1402 Comment
  JEPS87143  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  SEINET4855027  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along Calif Hwy 70 in Feather River Canyon at the turnoff to Pulga. Comment
  RSA781351  Eriogonum ursinum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 150 Butte Humboldt road. Comment
  SEINET10871615  Eriogonum ursinum Mary Susan Taylor 1978-7-18 Taylor 1698 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CDA22694  Eriogonum vimineum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  SEINET10937587  Eriogonum vimineum Mary Susan Taylor 1975-9-19 Taylor 921 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC301305  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte Near Stirling 1074 Comment
  CAS-BOT-BC308161  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  CHSC99548  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2008-6-15 9414 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  RSA4146  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CHSC61767  Eriophyllum lanatum var. integrifolium Vernon H. Oswald 1993-8-24 5852 Butte Forest Rd. 26N33, 1.8 mi S of Humbug Rd. (27N11), ca. 0.5 mi (air) SW of Cirby Mdw., ESE of Jonesville. 1828 Comment
  JEPS107954  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET8565597  Erodium cicutarium A. R. James 1963-4-16 s.n. Butte Chico. 61 Comment
  CHSC52400  Erodium moschatum Rod Robertson 1979-3-20 10 Butte 10 ft S of Humbug Rd, 100 ft W of Honey Run Rd, 4.3 mi E of Skyway. 85 Comment
  CHSC670  Erodium moschatum C. Merton 1929-5-20 Butte Chico. 57 Comment
  JEPS17429  Eryngium aristulatum var. aristulatum W. L. Jepson 1934-5-4 16608 Butte 1 1/2 mi. s. Nord (near Sacramento R., swales of Pine Creek) Comment
  CHSC37504  Eryngium castrense J. D. Jokerst 1983-1-17 1676 Butte Top of North Table Mt. Ca 1/2 mile north of Cherokee Rd at the east edge of mesa. 381 Comment
  CHSC38734  Eryngium castrense Vernon Oswald 1983-5-8 456 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
  CHSC25361  Erysimum capitatum var. capitatum Marc P. Hayes 1977-4-22 5 Butte Ca. .8 km sw of Pulga, 110 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 490 Comment
  CHSC4257  Erysimum capitatum var. capitatum J. E. Bowlin 1967-3-24 36 Butte Along roadside, Hwy 70 at Cresta Powerhouse. Comment
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 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
  CHSC28134  Erythranthe bicolor J. D. Jokerst 1979-5-7 221 Butte On top of Cohasset Ridge. 463 Comment
  SEINET13694419 Image available Erythranthe bicolor Lincoln Constance 1941-1 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC50115  Erythranthe filicifolia Vernon Oswald 1990-4-30 4175 Butte Fall River at the head of the falls, reached via Feather Falls Trail. At the mouth of the drainage from California Nutmeg Spring. 579 Comment
  CHSC105168  Erythranthe glaucescens Christopher T. Ivey 2007-3-30 365 Butte Cohasset Road, 2.3 m NE of intersection with Keefer Rd., 3.9 m SW of town of Cohasset, in seep on S side of road. 273 Comment
  CHSC44907  Erythranthe glaucescens Lowell Ahart 1988-7-31 6144 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC45725  Erythranthe glaucescens Phillip Scott 1988-4-18 38 Butte Mud Creek Bridge, Meridian Way ca. 3 mi w of Chico. 42 Comment
  CHSC62829  Erythranthe glaucescens Ella Icard 1893-1-1 Butte Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  SEINET8405463  Erythranthe glaucescens A. A. Heller 1926-4-26 13932 Butte near the Neale grade about 5 miles from Paradise; Upper Sonoran Life Zone. Comment
  CHSC84715  Erythranthe inconspicua L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7849 Butte Northern High Sierra Nevada. Along northwest edge of North Fork Feather River arm of Lake Oroville, at the mouth of French Creek. 280 Comment
  CHSC11895  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  CHSC43763  Erythranthe tilingii Vernon Oswald; Lowell Ahart 1987-7-1 3081 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  SEINET10469661  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3551 Butte T23N R4E nw sec 29, Paradise SE quad. Serpentine scrub, W side and downslope from spur rd to Old Utah Mine, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi NE of Magalia, on N side of ridge. 2800 ft. 853 Comment
  CHSC33719  Erythronium multiscapideum M. S. Taylor 1981-4-8 3515 Butte S side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek cyn and Pulga, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 21 mi n of Oroville. 1005 Comment
  UCD111667  Erythronium multiscapideum Christopher Mallek 2008-1 HW1- 2 Butte Magalia. 756 Comment
  POM109649  Erythronium multiscapideum C. C. Bruce 1897-04 2011 Butte Butte Creek Comment
  POM125695  Eschscholzia caespitosa subsp. caespitosa C. C. Bruce 1898-05 2019 Butte Doe mill Comment
  CAS-BOT-BC402961  Eschscholzia californica John Thomas Howell 1962-6-15 37469 Butte Magalia 731 Comment
  CHSC24875  Eschscholzia californica T. F. Burnham 1976-4-24 17 Butte Ca. .5 mi s of Skyway, 5.8 mi e of Chico. 246 Comment
  SEINET10937887  Eschscholzia californica Mary Susan Taylor 1982-5-2 Taylor 4388 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC30972  Eschscholzia lobbii Joann Lacey 1979-3-16 5 Butte Ca. 1.1 mi ne of jct of Humboldt Rd. and Stilson Canyon Rd., ca. 3.9 mi ne of Chico. 129 Comment
  HSC67920  Eschscholzia lobbii J. P. Smith 1973-3-22 5918 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA176478  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Field near the Hooker Oak east of Chico Comment
  HSC92486  Eschscholzia lobbii N. Wynne, M. Peckham, J. Bamesberger 1994-3-30 24 Butte Table Mtn., Cherokee Rd., about 2 mi. from Hwy. 70 Comment
  CAS-BOT-BC312033  Eucephalus breweri Vernon Oswald; Lowell Ahart 1987-8-5 3178 Butte Near Humboldt Peak 2148 Comment
  CHSC60824  Euonymus occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1993-6-22 5564 Butte Long Ravine W of Stirling City, along Hendricks Canal ca. 0.25 mi S of the Diversion Dam. 950 Comment
  UC1586472  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4736 Butte Forest Rd. 23N60 (Jordan Creek-Marble Creek Rd.) at Jordan Creek (e. of Oroville-Quincy Hwy., ca. 5.75 mi. (air) n.e. of Brush Creek) 1082 Comment
  CHSC108825  Euphorbia peplus Lowell Ahart 2012-4-17 17887 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SEINET10873986  Euphorbia serpillifolia Lowell Ahart 1985-10-12 Ahart 5200 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC54099  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1991-5-11 4576 Butte Lake Oroville, Loafer Creek Recreation Area, near the group camps. Along Roy Rodgers Trail. 341 Comment
  JEPS113325  Euthamia occidentalis L. P. Janeway 2006-10-4 8902 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  SEINET11688370  Festuca californica Unknown 1985-1 4998 Butte 0.12 mi E of dirt road, about 1.5 mi NE of Concow of Reservoir 732 Comment
  RSA712991  Festuca californica var. californica L. Ahart 2006-5-10 12626 Butte 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. 406 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
  CHSC61369  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte On the sides of a stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  CAS-BOT-BC62905  Frangula californica subsp. tomentella A. A. Heller 1912-5-23 10753 Butte Table Mountain Olive Ranch n. of Oroville. Comment
  SJSU7511  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 68113 Butte Feather R Canyon, Pulga 487 Comment
  CHSC48838  Frangula rubra subsp. obtusissima Vernon Oswald 1985-6-3 1799 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn Lookout. 1066 Comment
  SEINET8730880 Image available Frasera albicaulis Unknown 1946-1 2944 Butte S. 1, T. 20 N0. , R. 5 E. Comment
  CHSC99556  Fraxinus dipetala L. P. Janeway 2008-5-26 9370 Butte Northern Sierra Nevada Foothills. East side of West Branch Feather River about 2.4 km north-northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.0 road km northeast of the bridge over West Branch Feather River. Steep northwest-facing rocky scrub area in otherwise mixed conifer forest. 564 Comment
  LA50899  Fraxinus dipetala A. A. Heller; 1915-4-12 11815 Butte hills 14 mi NE of Chico near Rock creek Comment
  CHSC115408  Fraxinus latifolia M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  CHSC4661  Fritillaria affinis R. Carter 1966-3-13 301 Butte Found ca. 6 mi. E of Chico at intersection of HoneyRun Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CHSC86423  Fritillaria affinis R. D. Fischer; Paul Maslin 2004-2-7 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609847E 4408885N. 381 Comment
  CAS-BOT-BC130316  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Near Magalia Comment
  CAS-BOT-BC130319  Fritillaria eastwoodiae A. A. Heller 1922-4-23 13618 Butte On the Feather River crossing near Yankee Hill Comment
  SJSU8739  Fritillaria eastwoodiae L. J. Ericsen 1955-4-17 117 Butte Humbug Rd Comment
  CHSC28974  Fritillaria pluriflora J. D. Jokerst 1980-3-12 468 Butte Ca 1.0 mi E of Chico Muni Airport, 600 m E of Cohasset Hwy where it makes a 45 degree turn to the NW. 67 Comment
  CHSC92557  Fritillaria recurva L. P. Janeway 2005-4-25 8366 Butte Northern High Sierra Nevada. Plumas National Forest; ridgetop northern end of Rocky Ridge; just above Rim Road (Ponderosa Way) 200 m east-southeast of junction with Concow Road; head of upper side drainage of Flea Valley Creek. 988 Comment
  CAS-BOT-BC508142  Fritillaria recurva Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  SEINET10905360  Fritillaria recurva Mary Susan Taylor 1981-5-21 Taylor 3784 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  UCR190819  Galium aparine 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
  SEINET10968838  Galium divaricatum Mary Susan Taylor 1980-5-24 Taylor 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38658  Galium parisiense Vernon Oswald 1983-5-21 515 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft E of the power lines. 249 Comment
  RSA81683  Galium parisiense Roxana S. Ferris 1952-5-16 12475 Butte 5 miles S of Cherokee on road to Oroville. Comment
  CDA6660  Galium parisiense L. Ahart 2000-6-27 8524 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. Comment
  CHSC1615  Galium porrigens var. tenue M. Roberson 1956-4-9 Butte SW of Paradise. 426 Comment
  POM367830  Galium trifidum H. F. Copeland 1930-07 1393 Butte Jonesville. Comment
  CHSC47484  Galium trifidum var. pacificum Lowell Ahart 1984-7-19 4750 Butte About 1 1/2 miles south-east of Bald Mountain, about 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1371 Comment
  CHSC61011  Galium trifidum var. pacificum Lowell Ahart 1993-6-26 7017 Butte Near center, section 24. North of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC28430  Galium triflorum M. S. Taylor 1979-10-5 2337 Butte On SE side of Paradise Lake, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CHSC116748  Gamochaeta ustulata Lowell Ahart 2016-5-24 20853 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  UC478490  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville 1650 Comment
  SEINET12137665  Garrya fremontii Unknown 1985-1 4835 Butte E of Magalia 750 Comment
  CHSC37444  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-3 4130 Butte E of Philbrook Reservoir; at trailside. 1828 Comment
  CHSC84437  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. 1771 Comment
  UCD103683  Gayophytum diffusum subsp. parviflorum R. A. Schlising; Banchero, Fuller, Tarp 1981-7-3 4129 Butte E of Philbrook Reservoir. 1828 Comment
  CHSC31182  Gayophytum humile M. S. Taylor 1978-7-18 1716 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC34812  Genista monspessulana M. S. Taylor 1981-5-5 3613 Butte W side of spur rd, ca. 1/2 mi n of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi n of Feather Falls. 853 Comment
  UC463036  Gentiana newberryi E. B. Copeland 1931-7-21 Butte Jonesville 1500 Comment
  SD3714  Gentianopsis simplex E. B. Copeland 1930-8-2 Butte Jonesville 1500 Comment
  JEPS122205  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  JEPS119546  Geranium molle Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17858 Butte East of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC459402  Geum macrophyllum Lowell Ahart 1980-6-20 2416 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  CHSC39273  Gilia capitata subsp. mediomontana Lowell Ahart 1983-6-26 4164 Butte Found along the sides of Bean Creek Road, about 1/2 mile south of Little Bald Rock. 1000 Comment
  UC660001  Gilia capitata subsp. mediomontana Lincoln Constance 1941-5-28 2827 Butte South Branch of the Feather River at Magalia; Sierra Nevada foothills, South Branch Feather River 487 Comment
  CHSC42089  Gilia capitata subsp. pedemontana Rusti Gammon 1986-4-18 19 Butte Ca. 5 mi s of Centerville, ca. 20 yds w of Butte Creek above w bank. 91 Comment
  CHSC41667  Ginkgo biloba L. P. Janeway 1986-3-19 1336 Butte City of Chico. Planted in the lawn behind the Bidwell Mansion. Comment
  CAS-BOT-BC266564  Githopsis pulchella Peter H. Raven 1953-5-9 5437 Butte 1.2 miles from Bangor on Oroville Road Comment
  UCD80196  Githopsis pulchella subsp. campestris CNPS SN Foothill Team 2005-5-27 SNNR 0205 Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek. 201 Comment
  CHSC20523  Githopsis specularioides M. S. Taylor 1975-4-29 536 Butte Scattered on s side of Pentz Rd, ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. Comment
  CHSC32136  Githopsis specularioides L. Ahart 1974-4-24 427 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET12331825  Githopsis specularioides Unknown 1985-1 4967 Butte W of Lunt Road, about 0.5 mi N of the Intersection of LuntRoad and Highway 70, N of Yankee Hill, 503 Comment
  CHSC97251  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UC1562276  Glinus lotoides Lowell Ahart 1990-7-2 6537 Butte near McCabe Creek (below the high water line of Lake Oroville, about 1/2 mi sw of the Enterprise Bridge across Lake Oroville) 243 Comment
  SEINET10843174  Glyceria elata A. Arthur Heller 1928-7-10 Heller 14694 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC478463  Gnaphalium palustre E. B. Copeland 1931-7-18 694 Butte in places along Butte Creek; Jonesville Comment
  RSA256646  Gratiola ebracteata R. A. Vanbianchi 1974-4-20 208 Butte Paradise Skyway, 1 mile east of U.S. Highway 99. Comment
  SFV11414  Grindelia camporum M. L. Vincent 1963-6-10 423 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  SEINET267158  Grindelia camporum var. camporum T. A. Ranker, P. G. Trapp 1994-6-17 1625 Butte Pence Road south of Paradise. 395 Comment
  POM220946  Hackelia californica D. D. Keck, J. Clausen 1935-6-25 3772 Butte Spring Valley Reservoir 5 miles N.E. of Chaparral. 1707 Comment
  RSA496349  Hackelia nervosa Elaine Joyal, D. Mehlman 1988-7-3 1309 Butte Butte-Tehama Cos. line: Lassen National Forest, e side of Humboldt summit. 2100 Comment
  SEINET10969144  Hackelia nervosa Mary Susan Taylor 1978-7-18 Taylor 1711 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC6644  Hedera helix M. MacArthur 1968-6-16 340 Butte In kindergarten play area of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CAS-BOT-BC306291  Hedypnois cretica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC43196  Helenium bigelovii Robert Banchero 1981-7-11 566 Butte Ca 2.0 mi ne of Coyote Gap. Meadow. 1463 Comment
  POM180853  Helenium bigelovii H. F. Copeland 1924-8-12 868 Butte Jonesville. Comment
  CHSC42390  Helenium puberulum Lowell Ahart 1987-6-9 5721 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC33215  Heliotropium curassavicum R. E. Preston 1981-6-19 98 Butte Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. At side of road near edge of water, on levee, ca. 100 m w of Headquarters. 20 Comment
  CDA42909  Helminthotheca echioides L. Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, South of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC65192  Helminthotheca echioides Lowell Ahart 1995-7-2 7590 Butte Along the edge of the dirt road, near the water trough for horses, south-west of the parking area to unload horses, on the west side of Oroville Quincy Highway, Loafer Creek State Park, about 6 miles east of Oroville. 335 Comment
  RSA121034  Hemizonia luzulifolia J. T. Howell 1955-9-6 30909 Butte Butte Creek E of Butte City on road to Oroville. Comment
  CHSC84124  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS47390  Hesperevax caulescens L. R. Heckard, and Robert Ornduff, Hal Weidman 1966-4-27 1473 Butte field along US Hwy 99 about 11 mi se Chico Comment
  JEPS108885  Hesperocnide tenella Lowell Ahart 2006-4-27 12535 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut 45 Comment
  CHSC44303  Hesperolinon californicum Lowell Ahart 1988-4-29 5962 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/1 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CAS-BOT-BC176219  Hesperolinon disjunctum Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CHSC113973  Heteranthera limosa Lowell Ahart 2014-10-14 19884 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  UC2062461  Heteranthera limosa Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16444 Butte Rice Experiment State NW of Biggs, drained field at NE corner of Hamilton & Riceton roads. Comment
  CHSC100911  Heterocodon rariflorum R. A. Schlising 1979-5-4 3436 Butte South of Cohasset. 457 Comment
  CHSC11860  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville. 1550 Comment
  CHSC42135  Heterocodon rariflorum Lowell Ahart 1984-7-19 4727 Butte In a seep along the road gutter, 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. 1371 Comment
  CHSC69042  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS94303  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  SFV11711  Heterocodon rariflorum M. L. Vincent 1968-6-10 841 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  UCR51809  Heterocodon rariflorum H. F. Copeland 1927-9-4 0945 Butte Jonesville 1524 Comment
  POM91572  Heteromeles arbutifolia C. C. Bruce 1897-06 1795 Butte [No location information provided.] Comment
  JEPS113323  Heterotheca oregona var. compacta L. P. Janeway 2006-10-4 8900 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  UCD74317  Heterotheca oregona var. compacta Ellen Dean; D. Spencer 2008-12-9 5270 Butte City of Chico. Lindo Channel at the end of Madrone Ave. Comment
  CDA35715  Hibiscus lasiocarpos T. C. Fuller 1969-8-19 18818 Butte North side of Nelson West Rd., ca. 3 miles west of Nelson. 0 Comment
  CAS-BOT-BC312343  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CHSC97365  Hieracium albiflorum Paul Maslin 2005-5-18 63 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  RSA718792  Hieracium albiflorum L. P. Janeway 2006-6-25 8699 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC31650  Hirschfeldia incana L. Ahart 1976-4-4 1151 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC55330  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CAS-BOT-BC55331  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CAS-BOT-BC280717  Holcus lanatus L. L. Heinrichs 1964-4-28 s.n. Butte C. L. Boynton prop., across Hwy 40 Alt. from Berkeley Olive Assoc., Oroville Comment
  CHSC4308  Holcus lanatus R. L. Smith 1966-5-20 4 Butte Butte Creek Canyon, Honey Run Rd. 4 mi. e of S Skyway. Comment
  CHSC66459  Holcus lanatus Vernon H. Oswald; Lowell Ahart 1996-6-10 7761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a ditch along the farm road on the N side of Tract 7.2, Sanctuary I. 33 Comment
  CHSC31535  Holozonia filipes L. Ahart 1974-7-9 549 Butte Along banks of North Honcut Creek on moist soil. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC285090  Hordeum marinum subsp. gussoneanum Lowell Ahart 1982-4-29 3397 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC42373  Hordeum marinum subsp. gussoneanum Lowell Ahart 1987-5-6 5563 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
  CHSC75430  Hordeum marinum subsp. gussoneanum Jennifer Slater 1997-4-12 21 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC284885  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-16 37568 Butte Magalia 731 Comment
  CHSC23677  Horkelia tridentata M. S. Taylor 1976-4-24 1067 Butte Ca. 5 ft e of Oroville-Quincy Hwy, ca. 4 mi ne of Lake Madrone, ca. 13 mi ne of Oroville. Comment
  SEINET10483369  Horkelia tridentata Mary Susan Taylor 1980-5-8 Taylor 2613 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
  SEINET11907302  Horkelia tridentata L. S. Rose 1939-1 39231 Butte 2 mi NE of Clipper Mills 1173 Comment
  CAS-BOT-BC536251  Horkelia tridentata var. tridentata H. F. Copeland 1920-7-11 53 Butte By Butte Creek 1828 Comment
  CHSC69108  Hosackia crassifolia var. crassifolia Lowell Ahart 1997-8-1 7794 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  SD2572  Hosackia oblongifolia var. oblongifolia E. B. Copeland 1930-7-11 420 Butte Jonesville, in sunny places wet ,at least, below the surface 1500 Comment
  JEPS124302  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC46200  Hydrophyllum occidentale L. P. Janeway 1988-6-25 2879 Butte Creek along Bull Hill Rd 2.2 mi from the Skyway. Disturbed (logged) slope just above the creek. 1508 Comment
  UC1609440  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte about 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  UCD169859  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC410220  Hypericum concinnum Lowell Ahart 1983-6-21 4059 Butte Along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CHSC41258  Hypericum formosum var. scouleri S. C. Morey 1983-7-21 477 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS98550  Hypericum mutilum Lowell Ahart 2000-7-18 8602 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
  CHSC113485  Hypericum scouleri Lowell Ahart 2014-7-13 19661 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
  CHSC103956  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC8147  Hypochaeris radicata K. Henegar 1969-5-7 86 Butte 8th Ave., 1/4 m from junction with Nord Ave. Comment
  CHSC46253  Idahoa scapigera Vernon Oswald 1989-3-1 3726 Butte South side of the East Branch of Mud Creek e of Richardson Springs. At the falls. 228 Comment
  RSA500418  Idahoa scapigera Vernon H. Oswald 1989-3-1 3726 Butte S side of the East Branch of Mud Creek, E of Richardson Springs. At the falls. Comment
  CHSC46806  Ipomopsis aggregata subsp. formosissima R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4646 Butte N part of county on Snow Mountain ridge. 2072 Comment
  CAS-BOT-BC133511  Iris John Thomas Howell 1955-6-14 30470 Butte De Sabla Comment
  CAS-BOT-BC133551  Iris hartwegii Clarence R. Quick 1952-6-30 52 -97 Butte Ridge top, Big Bar Mt., east of Pulga Comment
  CHSC49637  Iris hartwegii subsp. hartwegii Vernon Oswald 1984-5-28 1213 Butte Cohasset Rd., 0.3 mi n of the end of the pavement. 1005 Comment
  CHSC61244  Iris hartwegii subsp. hartwegii K. B. McShea 1992-4-23 13 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  CHSC2207  Iris macrosiphon I. Huffman 1930-5-5 Butte Paradise. 548 Comment
  HSC87296  Iris tenuissima M. Stopher 1975-4-23 22 Butte Along Humbug Rd. in Butte Creek Canyon, 5 mi. ESE of Chico 85 Comment
  CAS-BOT-BC69979  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  SDSU1943  Isoetes bolanderi E. B. Copeland 1929-6-29 Butte Above Jonseville. 533 Comment
  SDSU1944  Isoetes bolanderi E. B. Copeland 1929-6-29 732 Butte Above Jonseville. 533 Comment
  CHSC31520  Isoetes howellii L. Ahart 1978-4-21 1662 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC81194  Isoetes howellii J. Trizzino 2001-4-25 58 Butte Oro-Chico Highway, 0.25 mi west of Neal Road, wet ditch on north side of road. 54 Comment
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UC1609032  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte about 6 (air) mi ne Feather Falls (w of the bridge across Fall River); Fall River, ne of Feather Falls 1036 Comment
  CHSC743  Juglans californica var. hindsii J. Foster 1928-4-20 Butte Chico. 57 Comment
  CHSC93642  Juglans californica var. hindsii Paul Kirk 2001-10-19 11 Butte City of Chico, at corner of W. 3rd Ave. and Arcadian. 51 Comment
  CDA32296  Juncus acuminatus G. F. Hrusa, T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CDA37214  Juncus acuminatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  CHSC31841  Juncus acuminatus L. Ahart 1975-6-19 797 Butte Along edge of North Honcut Creek. Peter Ahart Ranch,Honcut. 50 Comment
  CHSC96973  Juncus articulatus Lowell Ahart 2007-7-11 14286 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS113186  Juncus brachyphyllus Lowell Ahart 2007-5-22 13898 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  CHSC113367  Juncus bufonius var. bufonius Lowell Ahart 2014-4-9 19339 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC27576  Juncus bufonius var. bufonius Robert Schlising 1978-5-17 3263 Butte Magalia; serpentine outcrop just S of Magalia Res. And crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC6115  Juncus bufonius var. bufonius A. R. Jaegel 1968-4-19 152 Butte 1 mi s of Cherokee on Cherokee Rd. Comment
  JEPS114371  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  JEPS117319  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  CHSC111388  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC46425  Juncus capitatus Lowell Ahart 1989-5-28 6282 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UC1609271  Juncus covillei var. obtusatus Lowell Ahart 1993-6-26 7010 Butte about 1/4 mi w of Lost Creek Reservoir (on an old logging road, n of the dirt road) 1036 Comment
  CDA2694  Juncus cyperoides G. D. Barbe, T. C. Fuller 1982-6-14 3675 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  CHSC46623  Juncus dubius Vernon H. Oswald 1989-7-27 3900 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along the north fork of the creek. 1767 Comment
  CHSC29249  Juncus effusus subsp. pacificus M. S. Taylor 1978-7-19 1749 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  JEPS114880  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  JEPS114882  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS118084  Juncus effusus var. pacificus Lowell Ahart 2011-8-23 17646 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. Meadow in Yellow Pine Forest 1133 Comment
  CHSC44647  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1982-10-7 1660 Butte Along the margins of the West Branch of the Feather River, at Coon Hollow where Forest Service Road 27N74 crosses the river. 1615 Comment
  CHSC84207  Juncus ensifolius Lowell Ahart 2003-6-30 10336 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  UC398897  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville 1550 Comment
  SEINET10839421  Juncus ensifolius Mary Susan Taylor 1978-4-14 Taylor 1565 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
  CHSC113385  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-2 19546 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC78212  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte In tire ruts on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  JEPS98332  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC47557  Juncus leiospermus Lowell Ahart 1978-5-2 1703 Butte On the edges of small vernal pools on the top of Table Mountain, east of the large parking area, about 7 miles north of Oroville. 396 Comment
  CHSC47561  Juncus leiospermus Lowell Ahart 1984-4-6 4543 Butte About 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  UC1258091  Juncus leiospermus Lowell Ahart 1979-5-29 1895 Butte 2.5 mi se Paradise (on e side of Kunkle Creek, 0.25 mi n of Kunkle Reservoir) 500 Comment
  CAS-BOT-BC123263  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCSB45481  Juncus leiospermus var. ahartii Ahart, Lowell 1982-5-14 Butte Peter Ahart Ranch; ca 2 mi N & 1/2 mi E of Honcut 50 Comment
  CHSC103709  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC93476  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-3 12558 Butte On the sides of vernal pools, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 405 Comment
  JEPS117320  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 385 Comment
  JEPS117322  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side 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 from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC105531  Juncus orthophyllus Lowell Ahart 2010-9-21 17217 Butte On damp bare soil, open meadow like area in red fir forest, 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 Philbrood Reservoir. 1917 Comment
  UC1586590  Juncus patens Vernon H. Oswald and Lowell Ahart 1991-5-31 4638 Butte s side Thermalito Diversion Pool (and on the n side of Oroville Dam Blvd East, between the 4 and 5 mi posts (ca 4.5 mi)); Lake Oroville State Recreation Area, Dan Beebe Trail 85 Comment
  CDA34630  Juncus tenuis L. Ahart 2009-6-19 15918 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC98993  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte Damp bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  JEPS113842  Juncus tenuis Lowell Ahart 2007-7-2 14244 Butte On the east side of the restroom, at the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville 1001 Comment
  JEPS116054  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  RSA0113970  Juncus tenuis Lowell A. Ahart 2008-7-23 15143 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 miles west of the Ponderosa Dam. 258 Comment
  CHSC96965  Juncus trilocularis Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  CHSC111175  Juncus usitatus Lowell Ahart 2013-6-18 18808 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southest of Gridley. 19 Comment
  RSA727520  Juncus usitatus L. Ahart 2007-7-31 14400 -B Butte On the south strand of the Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  CAS-BOT-BC80922  Juniperus californica Don Heinz 1967-2-12 s.n. Butte Butte Co. dump, Neal Rd., ca. 7 mi. SE of Chico 106 Comment
  CHSC3896  Juniperus californica Don Heinz 1967-2-12 Butte Collected at Butte Co. Dump, Neal Rd., ca. 7 mi. SE of Chico. 106 Comment
  SEINET10547830  Keckiella breviflora subsp. glabrisepala Mary Susan Taylor 1980-6-14 Taylor 2883 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  JEPS115826  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 Comment
  NY790318  Keckiella lemmonii A. A. Heller 1902-5-6 5471 Butte Berry Canyon (near Clear Creek) Comment
  POM193328  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  UC889317  Kelloggia galioides A. A. Heller 1917-7-29 12870 Butte summit above Jonesville 2133 Comment
  CDA6295  Kickxia elatine L. Ahart 2002-10-17 9993 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CDA6293  Kickxia elatine T. C. Fuller 1965-9-15 14106 Butte Between Eddy Lake & Perkins Lake, Rancho Llano Seco, 3.5 miles south of Ord Ferry Road, between Sacramento River & the Chico-Butte City Road, 7 miles southwest of Dayton. 0 Comment
  CHSC36416  Koeleria phleoides Donald M. Burk 1982-4-24 115 Butte Along top of canyon on N. side of Neal Rd., ca. 0.6 mi. W. of Elliot Spring House. 243 Comment
  CHSC38365  Lactuca saligna Vernon Oswald 1983-6-29 798 Butte Upper Bidwell Park, Chico, at the edge of Parking Area L at Diversion Dam. 121 Comment
  CAS-BOT-BC340447  Lactuca saligna Lowell Ahart 1983-9-19 4459 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CHSC110410  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte on the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC341308  Lagophylla glandulosa H. M. Hall 1914-7-17 9753 Butte Neal Grade, between Chico and Paradise 213 Comment
  CAS-BOT-BC341318  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC341320  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte 8 miles north of Oroville Comment
  CHSC30546  Lamarckia aurea J. D. Jokerst 1980-3-23 93 Butte Along sides of Hwy 70 at its jct with the West Branch of Feather River. Comment
  UCD72997  Lasthenia californica subsp. californica Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC2425  Lasthenia fremontii R. Carter 1965-3-13 162 Butte On North Table Mountain, these found 40 yds. E of point where Old Cherokee Rd. comes over rim of table, on top of table ca. 15 yds. from rim. 304 Comment
  CHSC33352  Lasthenia fremontii R. M. Winchell 1980-4-23 4 Butte N of Chico. Between Singer Creek and Cana-Pina Road. Comment
  UC893757  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  SEINET10971150  Lasthenia fremontii Mary Susan Taylor 1974-4-24 Taylor 188 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  UCSC004636  Lasthenia gracilis Lowell Ahart 2005-5-11 11791 Butte T20N, R4E, northwest 1/4 Section 20, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off Cherokee Road, about 200 yeards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville Comment
  HSC68177  Lasthenia platycarpha J. P. Smith 1973-3-22 5908 Butte Along S.R. 149 just N of junction with U.S. 70 Comment
  RSA4423  Lathyrus nevadensis subsp. lanceolatus E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  SBBG121311  Lathyrus sphaericus L. Ahart 2007-4-30 13698 Butte Jordan Hill Rd, ca. 1.5 mi NW of Concow Crk, ca. 1.5 mi W of Concow Reservoir 358 Comment
  CHSC863  Lathyrus sulphureus A. Koopman 1929-4-16 Butte U.S. Plant Introduction Garden. 60 Comment
  CHSC87553  Lathyrus sulphureus R. D. Fischer 2004-3-28 66 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC102976  Lathyrus tingitanus Lowell Ahart 2009-6-3 15811 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
  SEINET10841170  Lathyrus tingitanus Mary Susan Taylor 1980-5-27 Taylor 2716 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  CHSC24144  Layia fremontii B. Bunge 1976-4-12 7 Butte Growing 25 yd. nw of intersection of Notre Dame Blvd. and Skyway near Chico. 67 Comment
  CHSC38373  Layia fremontii Vernon Oswald 1983-3-14 185 Butte Upper Bidwell Park, Chico, on the north rim about 2000 ft w of the power lines. Along the edge of a jeep trail. 188 Comment
  CHSC45893  Layia fremontii Lowell Ahart 1974-4-11 365 Butte Vernal pool or swale, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM53359  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  SEINET10474772  Layia fremontii Mary Susan Taylor 1973-1 Taylor 1 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10474773  Layia fremontii Mary Susan Taylor 1974-4-24 Taylor 190 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CDA42937  Lemna minuta L. Ahart 2012-10-2 18491 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC32121  Lemna minuta L. Ahart 1975-1-9 696 Butte In dredger pond near edge of North Honcut Creek, from Honcut go e to Dunstone Dr, stop when at s curve, then go w ca. 1/4 mi to North Honcut Creek; 2 mi n and 3 mi e of Honcut. 60 Comment
  JEPS120767  Lemna minuta Lowell Ahart 2013-9-20 19063 Butte About 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about 1 mile southeast of the Rice Experiment Station. Comment
  CHSC116704  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-14 20823 Butte On the east side of North Honcut Creek, Peter Ahart Ranch,about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC82421  Leontodon saxatilis subsp. longirostris Lowell Ahart 2002-5-7 9610 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS119756  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC38472  Lepechinia calycina Vernon Oswald 1983-6-2 598 Butte Upper Bidwell Park, Chico, on the s bank of Chico Creek near Yahi Trail w of Brown's Hole. 170 Comment
  UC215491  Lepechinia calycina Helen M. Edwards Jun 1917 Butte De Sabla Comment
  CHSC102965  Lepidium pinnatifidum Lowell Ahart 2009-7-4 16001 Butte On the south side of the paved road, southeast of parking lot 4, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwet of Gridley. 21 Comment
  CHSC57221  Lepidium strictum Vernon H. Oswald; Lowell Ahart 1992-3-24 4886 Butte Near Oroville at the junction of Burma and Cherokee roads, Lake Oroville Recreation Area on the west side of Thermalito Diversion Pool. In parking area located here. 74 Comment
  CAS-BOT-BC273947  Leptochloa fusca subsp. fascicularis Lowell Ahart 1986-11-9 5456 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  RSA796044  Leptochloa fusca subsp. fascicularis L. Ahart 2011-10-29 17731 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  SEINET10960779  Leptochloa fusca subsp. fascicularis A. Arthur Heller 1919-8-13 Heller 13354 Butte Rice field between Nelson and Richvale in moist adobe. Comment
  JEPS128618  Leptochloa fusca subsp. uninervia Lowell Ahart 2017-8-8 21655 Butte Waste area on east side of Palermo Honcut Highway, south of intersection of Palermo Honcut Highway and Palermo Road, in Palermo. Comment
  CHSC31826  Leptosiphon bicolor L. Ahart 1974-4-11 367 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42551  Leptosiphon bolanderi Lowell Ahart 1987-5-11 5613 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forestown. 868 Comment
  CHSC35973  Leptosiphon ciliatus M. S. Taylor 1982-6-24 4740 Butte In meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC40749  Leptosiphon filipes A. A. Heller 1938-6-14 15154 Butte 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  CHSC97318  Leptosiphon filipes L. P. Janeway 2007-7-2 9079 Butte Northern High Sierra Nevada. Plumas National Forest; along the road to Cascade 1.0 road km north-northwest of its crossing of Fall River; 0.4 air km east of the confluence of Dark Canyon at Fall River. Along edges of road and soft decomposed granite at base of road cut bank. 1052 Comment
  RSA31647  Leptosiphon filipes A. A. Heller 1938-4-11 15023 -a Butte Stony hill near the Rifle Range eas[t] of Chico Comment
  POM183144  Leptosiphon harknessii H. F. Copeland 1930-7-26 1307 Butte Jonesville. 1677 Comment
  CHSC113226  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  JEPS13267  Lessingia nana Rimo Bacigalupi with G. T. Robbins 1955-7-15 5304 Butte about 4 mi above the Hooker Oak (just above Big Chico Creek); just above Big Chico Creek 121 Comment
  CAS-BOT-BC341790  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill. Open along edge of dirt road 23N28 731 Comment
  UC1069830  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mi w Tres Vias; Chico Quadrangle Comment
  CAS-BOT-BC334597  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of teh Feather River near the Poe Power House about 2 miles south-east of Jarbo Gap 271 Comment
  POM132236  Leucothoe davisiae Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC57132  Lewisia nevadensis L. P. Janeway; R. A. Schlising 1988-7-22 3049 Butte Upper Coon Hollow; just below saddle between Coon Hollow and Chips Creek. 1920 Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  SEINET10572653  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2673 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC113467  Ligusticum grayi Lowell Ahart 2014-7-13 19646 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS122074  Ligusticum grayi Lowell Ahart 2014-7-13 19646 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  JEPS87458  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n. & 3 mi. e. Honcut (on w. side of Dunstone Road, about 12 mi s.e. of Oroville) 60 Comment
  UC726301  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte river nw Chico Comment
  POM182757  Lilium parvum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  POM218984  Lilium washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville. 1600 Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  UC600465  Lilium washingtonianum subsp. washingtonianum E. B. Copeland Jul 1930 Butte Jonesville 1600 Comment
  HSC97149  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte 'Meghdadi Property' in SE Chico, ca. 0.5 km N of Doe Mill Rd., ca. 0.5 km E of S end of Potter Rd., and 0.25 km W of old stone fence. Comment
  CHSC42483  Limnanthes alba subsp. versicolor Lowell Ahart 1987-5-12 5632 a Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  HSC93611  Limnanthes alba subsp. versicolor James D. Jokerst, R. S. Schlising 1982-5-19 1576 Butte NE of Camp 18 on Lumpkin Ridge Rd. 1280 Comment
  RSA590211  Limnanthes douglasii subsp. douglasii Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7236 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC104843  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. 398 Comment
  CHSC1009  Limnanthes douglasii subsp. rosea A. Goekler 1929-3-11 Butte Hooker Oak road. 60 Comment
  SFV2130  Limnanthes douglasii subsp. rosea M. L. Vincent 1962-4-17 203 Butte Sierra Nevada Cherokee Road near Table Mountain. Comment
  UCD116440  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  CHSC42218  Limnanthes floccosa subsp. californica John E. Hunter 1986-3-30 39 Butte Ca. 1 km e Chico, 50 m s Hwy. 32. 75 Comment
  HSC93612  Limnanthes floccosa subsp. californica James D. Jokerst 1980-3-27 520 Butte E of Cohasset Hwy. on S side of Richardson Springs Rd. 98 Comment
  UC1428057 Image available Limnanthes floccosa subsp. californica M. T. Kalin 1970-3-29 7014 Butte on Hwy 99E 0.5 mi s junction with Shippe Road; ; Butte Co. Comment
  SEINET10496778  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-16 Taylor 2490 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC24786  Linanthus dichotomus C. E. Stopher 1976-4-13 17 Butte 2.4 km s of Forest Ranch. 579 Comment
  UC133974  Linanthus dichotomus E. B. Copeland 1903-4-11 3030 Butte Chico Comment
  UC196264  Linanthus harknessii A. A. Heller 1914-8-8 11671 Butte Jonesville 1524 Comment
  CHSC51019  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  RSA0037498  Lindernia dubia var. anagallidea Lowell A. Ahart 2013-7-9 18832 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
  RSA0080120  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  POM196015  Linum lewisii E. B. Copeland 1929-7-17 379 Butte Above Jonesville. 2000 Comment
  SEINET13711404  Lipocarpha aristulata Lowell William Ahart, Lowell William Ahart 1999-1 8146 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  UC1135296  Lithocarpus densiflorus var. echinoides J. E. Sowder 1933-8-17 131 Butte 2.5 mi n and 0.75 mi w Bear Ranch Hill; Lassen National Forest, Bidwell Bar Quad. 1219 Comment
  CHSC87452  Lithophragma bolanderi R. D. Fischer 2004-3-20 86 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found in north running ravine on the Guardian Trail located below the bluffs of the Disk Golf Course. 396 Comment
  CAS-BOT-BC430878  Lithophragma bolanderi Lowell Ahart 1987-12-5 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC430882  Lithophragma bolanderi Lowell Ahart 1982-5-8 3421 Butte At the Forbestown Res. 700 Comment
  CHSC44350  Lithophragma glabrum Lowell Ahart 1988-3-28 5950 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC12190  Lithophragma parviflorum var. trifoliatum Lowell Ahart 1973-4-15 190 Butte Swedes Flat Road, Bangor. 304 Comment
  SJSU5717  Lithophragma parviflorum var. trifoliatum T. C. DeWitt 1971-4-2 Butte Humboldt Rd, 1 mi S of intersection with Hwy 32 304 Comment
  CHSC48897  Lithophragma tenellum Vernon Oswald; Lowell Ahart 1987-5-14 2396 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  CAS-BOT-BC123106  Lithophragma trifoliatum C. C. (Mrs.) Bruce 1897-4-1 1844 Butte Foothills near Chico Comment
  CDA13241  Lithospermum californicum G. F. Hrusa, T. D. Wilfred 1996-7-8 13088 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. 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
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CHSC90837  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CAS-BOT-BC283387  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte Hills, 8 miles N of Oroville Comment
  CHSC57166  Lolium multiflorum R. L. Ondricek-Fallscheer 1982-5-26 137 Butte In yard of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 192 Comment
  CHSC94679  Lolium multiflorum Lowell Ahart 2006-9-28 13382 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC49698  Lolium perenne Vernon Oswald 1988-5-17 3314 Butte Just w of the dam at Sly Creek Reservoir. Along the edge of the road. 1097 Comment
  SEINET10507503  Lolium temulentum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4068 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC87549  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Sierra Nevada foothills on the edge of upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on top of a ridge next to the old Hwy 32 Road near the north end of Humboldt Trail. 426 Comment
  POM78255  Lomatium dasycarpum subsp. tomentosum C. C. Bruce 1897-05 2059 Butte Little Chico Comment
  CHSC109524  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 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
  CHSC32635  Lomatium utriculatum M. S. Taylor; L. Hanson 1981-4-2 3477 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  SEINET10454538  Lomatium utriculatum Lowell Ahart 1985-5-15 Ahart 4976 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  LA205972  Lonicera conjugialis E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  CAS-BOT-BC240691  Lonicera interrupta A. A. Heller 1914-5-18 11408 Butte Collected near Hog Spring on the Chico-Butte Meadow road. Between Chico and Forest Ranch, 8 miles from Chico Comment
  CHSC25257  Lonicera interrupta M. S. Taylor 1977-6-26 1373 Butte On S side of Ponderosa Way, ca. 1 mi E of Cohasset. 609 Comment
  CHSC106231  Lonicera japonica L. P. Janeway; B. Castro 2010-6-4 9992 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 425 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  UCD107081  Lopezia racemosa subsp. racemosa N. Adams 1931-2-28 s.n. Butte Chico. Comment
  CHSC78076  Lotus corniculatus Shelly Pirtle 1997-4-9 27 Butte 20 miles south of Chico off of Biggs-Afton Road; Little Dry Creek. Comment
  SEINET10452682  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-19 Taylor 3808 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  SEINET10452683  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-5 Taylor 3614 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  JEPS117151  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  RSA754938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-8 14716 Butte Lake Oroville, about 250-300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  SEINET10452008  Lotus purshianus Mary Susan Taylor 1980-6-14 Taylor 2873 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UC1594550  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  CHSC112877  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  RSA0118783  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC102987  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC51007  Ludwigia palustris Lowell Ahart 1990-7-15 6565 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC28425  Ludwigia peploides M. S. Taylor 1979-10-2 2206 Butte Sacramento River sandbar, ca. 5 mi w of Chico. 30 Comment
  CHSC78388  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
  JEPS110472  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap 548 Comment
  CHSC84889  Lupinus affinis R. D. Fischer 2003-4-20 5 Butte Upper Bidwell Park, east side of Big Chico Creek. Located at western end of mdw and adjacent road/trail. Northern most patch approx 300 ft south of gated end of park property. 231 Comment
  RSA325121  Lupinus albicaulis var. albicaulis M. S. Taylor 1981-5-14 3716 Butte 2.9 mi SW of Merrimac on Oroville-Quincy Hwy. 976 Comment
  CHSC33148  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-6 1305 Butte SE of and adjacent to Detlot Road ca 1/3 mi SE of its western most junction with Hwy 70. 670 Comment
  CAS-BOT-BC198378  Lupinus albifrons Charles Piper Smith 1949-4-16 49104 Butte Bangor, 2.6 miles east, Yuba-Butte Bridge, Loma Rica Road Comment
  CHSC901  Lupinus albifrons R. Carter 1964-3-23 64 Butte 5 mi. E of Chico Rd. on Cherokee Rd. on rocky bank on E side of road. 60 Comment
  CAS-BOT-BC196251  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  POM196154  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  SEINET10484602  Lupinus apertus Haas 1983-9-8 HAAS UMO 173488 Butte On mcrae ridge w of plumas-eureka state park. Study by plumas nat for botanist Comment
  SEINET10484603  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23n,r5e,sec.18 nw 1/4. Pulga sw quad. Corolla pink. E side of road 23no2, ca 2 Miles e of rag dump, ca 6 air mile ne of magalia. Yellow pine forest, granitic Soil. Assoc.; Arctostaphylos truei, claytonia rubra 1189 Comment
  UC82158  Lupinus argenteus Mrs. R. M. Austin July 1896 706 Butte Colby Comment
  CHSC90489  Lupinus bicolor Steve Alvarez 1980-3-24 17 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  CHSC3568  Lupinus bicolor var. tridentatus R. D. Briggs 1966-3-5 32 Butte Three miles due north of Oroville, on hwy #70. Comment
  SEINET10485236  Lupinus densiflorus var. lacteus W. E. Hartman 1972-4-29 Hartman 7 Butte Corolla white; fls fragrant. Locally abundant on cliff by centerville rd. .6 Mi. N of centerville cemetary. Rocky, sandy loam. Assoc: trifolium Tridentatum. 244 Comment
  SEINET10452081  Lupinus formosus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4076 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  SEINET10490348  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte T22n r5e ne1/4 sec 22. Pulga sw quad. Chino ridge, ca 1.2 mi. N of 22n31, ca 3 Air mi. Se of pulga. 853 Comment
  SEINET10489238  Lupinus latifolius subsp. longipes Lowell Ahart 1984-6-8 Ahart 4683 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca 6 mi NE of Ponderosa Dam, ca 4 mi SE of Feather Falls; Yellow Pine Forest. 1/3 of stems; on damp red soil; scattered in the area; flowers purplish. 550 Comment
  CHSC25005  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville. Colby Canyon. 487 Comment
  CHSC34687  Lupinus nanus M. S. Taylor 1981-4-14 3528 Butte NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  RSA0072103  Lupinus nanus Daisie Huang 2006-4-15 06041567 Butte Upper Bidwell Park, Horseshoe Lake. 114 Comment
  RSA638251  Lupinus nanus subsp. nanus Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8117 Butte Table Mountain. Comment
  CHSC113126  Lupinus nanus var. vallicola Lowell Ahart 2013-11-18 19283 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
  CHSC105808  Lupinus polyphyllus var. burkei Lowell Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  JEPS121988  Lupinus polyphyllus var. burkei Lowell Ahart 2014-7-2 19536 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC33674  Lupinus succulentus L. Ahart 1981-5-16 2806 Butte In Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  RSA32889  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte 6 miles west of Chico. Comment
  CHSC52707  Luzula cascadensis L. P. Janeway 1987-6-26 2328 Butte Meadow just northwest of Logue Meadows along the road to Lynch Meadows. 1325 Comment
  CAS-BOT-BC436564  Luzula cascadensis H. F. Copeland 1920-8-29 145 Butte Jonesville meadow 1219 Comment
  CHSC4296  Luzula comosa var. subsessilis R. L. Smith 1966-5-5 Butte US Plant Introduction Station. 5 mi sw of Chico. Comment
  CHSC12182  Luzula macrantha Lowell Ahart 1973-2-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC30511  Luzula macrantha J. D. Jokerst 1980-3-23 489 Butte Along Cherokee Flume. 0.5 mi W of Hwy 70, from its S end of Bridge over West Branch Feather River. Comment
  CHSC32366  Luzula macrantha J. D. Jokerst 1980-4-18 607 Butte 1.0 mi S of the town of Nimshew where to road makes a sharp turn to the W. 701 Comment
  CHSC96839  Luzula macrantha Lowell Ahart 2007-5-29 13951 Butte On the north side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  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
  CHSC26620  Lycopus americanus Hayes 1977-9-24 117 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road z (Chico-Butte City Highway). In ditch along road edge. 30 Comment
  CHSC28806  Lycopus americanus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 408 Butte Top of north Table Mt, 300 m NW. of the intersection of Cherokee Rd. Comment
  RSA0036439  Lycopus americanus Lowell A. Ahart 2012-10-20 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  SEINET13711409  Lythrum hyssopifolia Lowell William Ahart, Lowell William Ahart 1999-1 8169 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  UC1609425  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  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
  SEINET6629282 Image available Lythrum salicaria Lowell Ahart 1984-1 4782 Butte W of Pacific Heights Road, ca. 5 miles SW of Oroville 40 Comment
  UCD102941  Lythrum salicaria Carl M. Wick 1975-8-15 s.n. Butte Oroville. Comment
  CHSC111173  Lythrum tribracteatum Lowell Ahart 2013-6-18 18806 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC42367  Lythrum tribracteatum Lowell Ahart 1987-5-10 5608 Butte In idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC54341  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  SEINET11601352 Image available Madia elegans A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (near Clear Creek) Comment
  CHSC52002  Madia elegans subsp. densifolia B. Castro 1987-9-25 228 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  CHSC46955  Madia exigua Lowell Ahart 1984-6-8 4666 Butte At the base of a cutbank, west of the little building at the south side of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  CHSC82485  Madia exigua Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9749 Butte On the south 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
  CAS-BOT-BC334653  Madia glomerata A. A. Heller 1914-8-8 s.n. Butte Jonesville 1524 Comment
  CAS-BOT-BC342970  Madia gracilis John Thomas Howell 1967-6-22 42632 Butte Magalia 701 Comment
  UC830885  Madia gracilis A. A. Heller 12816 a Butte Butte Meadows 1402 Comment
  CDA34718  Madia subspicata L. Ahart 2010-6-1 16751 Butte South side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SEINET10536496  Mahonia dictyota Lowell Ahart 1983-4-14 Ahart 3935 Butte Ca. 3/4 mi w of Forbestown Reserv., ca. 3.4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC46430  Maianthemum racemosum Lowell Ahart 1989-5-29 6321 Butte Just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  SBBG128773  Malva pseudolavatera L. Ahart 2013-5-21 18702 Butte waste area along fence, W side of Hwy 99E, 30 yards N of W Rio Bonito Rd, ca. one mi NE of Biggs 31 Comment
  CHSC52225  Marrubium vulgare L. P. Janeway 1988-5-19 2673 Butte Along Cohasset Rd near the Anderson Mill Site; near the county line. 1133 Comment
  CHSC90112  Marrubium vulgare Lesly Hess 2001-5-6 Butte Lower Bidwell Park, Chico. Comment
  JEPS115503  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS115307  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico Comment
  CAS-BOT-BC348086  Matricaria discoidea Lowell Ahart 1977-4-9 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD95461  Meconella californica M. C. Earley 1982-4-16 5 Butte 11 miles ESE of Chico. 112 Comment
  UCD106764  Medicago arabica P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  SEINET12155166  Medicago hispida P. L. Ricker 1912-1 3935 Butte Chico 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
  JEPS115505  Medicago lupulina Lowell Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  UCD107844  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC21046  Medicago sativa M. S. Taylor 1975-6-30 827 Butte On e side of Cohasset Rd, ca. 500 yds s of Lassen Ave, ca. 1 mi n of Chico. 60 Comment
  JEPS110337  Melica aristata Lowell Ahart 2006-7-16 12966 Butte East of the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CHSC8226  Melica californica D. McClain 1969-5-1 67 Butte 15 yds. s. of Cohasset Rd., 3.2 mi e. of Cohasset. 457 Comment
  CHSC94248  Melica fugax Lowell Ahart 2006-7-16 13007 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  CAS-BOT-BC281299  Melica harfordii Lowell Ahart 1984-6-10 4713 Butte Along the Forbestown Diversion Dam, about 2 miles SW of the Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CAS-BOT-BC281304  Melica harfordii M. S. Taylor 1978-7-21 1807 Butte On N side of Oroville - Quincy Highway , ca 9 miles N of Lake Madrone 914 Comment
  JEPS106241  Melica harfordii Lowell Ahart 2004-7-11 11229 Butte On the north side of the road, on the northeast side of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  UC600753  Melica stricta H. F. Copeland 1932-7-24 Butte sw of Butte Creek meadows (rim of Butte Creek drainage); Jonesville, Butte Creek 2000 Comment
  UC600754  Melica subulata H. F. Copeland 1931-6-9 Butte near junction of Jones Creek and Willow Creek (Jonesville); Jonesville 1524 Comment
  UCR115089  Melica subulata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  JEPS108134  Melissa officinalis Lowell Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  SBBG127999  Mentha arvensis L. Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  CHSC96038  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  JEPS95740  Mentha pulegium Lowell Ahart 1995-7-15 7591 Butte 12 mi S of Oroville (Peter Ahart Ranch; 2 1/4 mi N and 1/10 mi E of Honcut) 36 Comment
  CHSC43845  Mentha spicata B. Castro 1987-8-25 206 Butte Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC760  Mentha spicata V. Holt; M. Underhill 1952-7-21 Butte 152 Comment
  UC196321  Mentha spicata A. A. Heller 1914-8-20 11687 Butte hills 8 mi n Oroville Comment
  CHSC6643  Metasequoia glyptostroboides M. MacArthur 1968-4-16 354 Butte Ca. 40 ft. NE of Big Chico Creek, near Dining Hall, Chico State College campus. 60 Comment
  CHSC87427  Micranthes fallax R. D. Fischer 2004-3-22 117 Butte Upper Bidwell Park in Chico, on the lower east-side. Collected along road leading to old pistol range. 76 Comment
  CHSC108868  Micranthes nidifica Lowell Ahart 2012-3-23 17779 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC41285  Micranthes oregana S. C. Morey 1983-7-21 504 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA113229  Micropus californicus E. K. Balls, L. W. Lenz 1965-5-13 20693 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  CHSC38382  Micropus californicus var. californicus Vernon Oswald 1983-4-4 269 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  CHSC96563  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC46961  Microseris douglasii Lowell Ahart 1976-4-14 1062 Butte In pasture field, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC48185  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3293 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence line. 54 Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  CHSC20384  Mimetanthe pilosa L. M. Mayer 1975-6-21 400 Butte Growing beside the Sacramento River below Ord Ferry Bridge. Comment
  JEPS117224  Mimulus angustatus Lowell Ahart 2010-5-16 16693 Butte Bottom of a small drainage, just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 368 Comment
  RSA70710  Mimulus aurantiacus var. grandiflorus L. S. Rose 1951-6-26 51018 Butte Feather River Canyon, NE of Oroville 183 Comment
  SEINET12269793  Mimulus aurantiacus var. grandiflorus Bolander, Keller 1872-1 s.n. Butte Butte Comment
  JEPS4727  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  RSA430200B  Mimulus bicolor M. M. Boney 1897-1 4226 Butte Sandy banks and lake shores. Comment
  SEINET10570194  Mimulus bicolor Mary Susan Taylor 1986-5-6 Taylor 5619 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  UC426955  Mimulus breweri E. B. Copeland 1930-6-28 461 Butte Scotch John meadow Jonesville 1700 Comment
  UC1609349  Mimulus floribundus Lowell Ahart 1993-5-10 6934 Butte about 3/4 mi n and 2 1/4 mi e Honcut (about 12 mi se of Oroville); Peter Ahart Ranch 36 Comment
  UC103740  Mimulus glaucescens Mrs. R. M. Austin 1890-1 159 Butte Little Chico Canyon Comment
  UC26940  Mimulus glaucescens Mrs. R. M. Austin March 1898 2104 Butte Comment
  UCD96099  Mimulus glaucescens Dena Grossenbacher; Brian Green 2008-5-4 815 Butte Upper Bidwell Park on banks of Lindo Diversion Channel North of Centennial Ave. 80 Comment
  POM252825  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte Summit of Table Mtn. 305 Comment
  SBBG50968  Mimulus guttatus J. Doty 1969-3-31 615 Butte E side of Cohasset Rd, ca. 8 mi N of Chico Comment
  POM252815  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte The treeless, undulating plain of Table Mountain. 305 Comment
  CHSC14069  Mimulus moschatus K. R. Stern 1974-6-30 5771 Butte 11.5 mi ne of Stirling City, on Bald Mt. road. Comment
  CHSC44686  Mimulus moschatus R. Banchero 1980-6-12 207 Butte Along Hwy 32 ca 3.9 mi S of tis jct with Humboldt Rd, 8.3 mi N of the town of Forest Ranch. 999 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
  CHSC113499  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1063005  Mimulus torreyi P. L. Johannsen 1936-7-16 919 Butte 1 3/4 mi ese Butte Mdws. (Plot 1); Lassen National Forest, Paynes Creek Quadrangle Comment
  JEPS10512  Mimulus tricolor W. L. Jepson 1934-5-4 16612 Butte 1 1/2 mi s Nord; Sacramento River, Pine Creek Comment
  CAS-BOT-BC174595  Minuartia californica H. E. Brown 1897-3-3 143 Butte Near Clear Creek 53 Comment
  CHSC40650  Minuartia californica Ahart; Jokerst 1985-3-24 4868 Butte Found west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC83916  Minuartia californica Lowell Ahart 2003-4-10 10054 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  UC203619  Minuartia californica A. A. Heller 1914-3-18 11208 Butte 8 mi n Oroville Comment
  UCD80210  Minuartia californica CNPS SN Foothill Team 2005-4-5 SNFN 0096 b Butte CDFG North Table Mountain Wildlife Area. Plot is located on top of Table Mountain between the north fork and south fork of the northernmost canyon of Table Mountain. 370 Comment
  CHSC93347  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
  SEINET10537577  Minuartia pusilla Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5241 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC83087  Mollugo verticillata Lowell Ahart 2002-10-17 9983 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
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CAS-BOT-BC219945  Monardella breweri subsp. lanceolata Lowell Ahart 1984-6-8 4662 Butte Along Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC111978  Monardella breweri subsp. lanceolata Lowell Ahart 2012-6-2 18135 Butte Along the east side of a poor dirt road, about 100 yards north of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC39282  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte 3 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1100 Comment
  UCSB63980  Monardella douglasii Jokerst, James; Castro, Barbara 1992-5-19 Butte Powerline site in the unnamed canyon N of Nugen Canyon; on the S side of Neal Rd; near the Butte County Sanitary Landfill: T21N R2E NEW NE'/i Sect. 14; Valley and Foothill Grassland within Blue Oak Woodland; Cascade Range Foothills 83 Comment
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Jul 19 2018
  CHSC52230  Monardella odoratissima L. P. Janeway; R. A. Schlising 1988-7-22 3042 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  CHSC43014  Monardella sheltonii L. P. Janeway 1987-6-26 2286 Butte 8.5 mi EW of Stirling City and 0.1 mi W of Fiver Corners on the road from Stirling City to Rag Dump. 1127 Comment
  CHSC43024  Monardella sheltonii L. P. Janeway 1987-6-26 2303 Butte Above Camp Cr. 2.4 mi east of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
  CHSC43847  Monardella sheltonii B. Castro 1987-5-18 91 Butte Approx. 9 mi e of Chico and ca 1/2 mi e of Hwy 32 via Altatina Dr. 457 Comment
  POM70490  Monardella sheltonii C. C. Bruce 1897-05 1974 Butte Little Chico. Comment
  JEPS104298  Monardella villosa subsp. villosa Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) north of Forbestown. 481 Comment
  UC2035834  Monardella villosa subsp. villosa Chester Dudley 1940-6-1 Butte near Magalia Comment
  CHSC56572  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-1 2928 Butte Along meadowy creek draining the lake of southeastern-most headwaters of Butte Creek. In the creek and at dryish edges. 1935 Comment
  UC600488  Montia chamissoi H. F. Copeland 1932-6-27 Butte in and at edge of Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows Comment
  CHSC50054  Montia fontana subsp. amporitana Lowell Ahart 1990-4-15 6462 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CAS-BOT-BC445037  Montia linearis Lowell Ahart 1983-6-30 4183 Butte On the east side of the West Branch of the Feather River, about 5 miles east of Stirling City 1150 Comment
  UC725932  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC45394  Montia parvifolia Vernon Oswald 1984-6-11 1273 Butte Humboldt Rd. between Lomo and Butte Meadows, 2.0 mi ne of Hwy 32. 1380 Comment
  CDA43070  Morus alba L. P. Janeway 2011-5-9 10252 Butte Sacramento Valley; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC102477  Morus alba L. P. Janeway 2009-10-13 9951 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Big Chico Creek along South Rim Trail/Annie Bidwell Trail/Guardian Trail 275 m west of the high power lines. 109 Comment
  CHSC109094  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  UCD111881  Morus alba John Thomas Howell 1961-9-22 36638 Butte Oroville. Feather River. 53 Comment
  CHSC11976  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville. 1550 Comment
  CHSC61544  Muhlenbergia filiformis Lowell Ahart 1993-7-6 7047 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  UC569481  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow Paynes Creek Quadrangle 1341 Comment
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET7294640 Image available Muhlenbergia mexicana var. filiformis John Thomas Howell 1961-1 36716 Butte Bank of Feather River, Oroville 53 Comment
  CHSC78126  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  JEPS87462  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  CDA5314  Myriophyllum spicatum L. Ahart 2001-6-3 8749 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  UC1586518  Najas graminea Lowell Ahart 1991-9-14 6723 Butte About 2 miles east of Honcut, Joie Osgood Ranch. 45 Comment
  SEINET10496820  Navarretia divaricata Lowell Ahart 1983-8-16 Ahart 4303 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC87539  Navarretia divaricata subsp. vividior R. D. Fischer; Jenny Marr 2004-5-9 135 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on the Annie Bidwell Trail between Diversion Dam and junction of Bloody Pin Trail. 198 Comment
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  CHSC1293  Navarretia intertexta M. Roberson 1956-5-21 Butte SW of Paradise near Skyway. 426 Comment
  JEPS127016  Navarretia intertexta Lowell Ahart 2016-5-24 20864 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
  UCD106118  Navarretia intertexta subsp. propinqua L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC1294  Navarretia leucocephala F. Hughes 1935-4-24 Butte Butte Creek Canyon. 121 Comment
  CHSC71122  Navarretia leucocephala Jan Monelo 1989-4-25 10 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico; rim of drainage, ca 20 yds w of Hwy 99. 106 Comment
  CAS-BOT-BC230334  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte Near junction of Chico-Paradise Road, 3 miles S of Chico Comment
  UC52316  Navarretia leucocephala Mrs. R. W. Summers Jun 1886 Butte Comment
  UC907799  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte 3 mi w Chico (near junction of Chico-Paradise Road) Comment
  CHSC103711  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  RSA717289  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11826 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
  UCR66594  Navarretia leucocephala subsp. leucocephala H. F. Copeland 1923-5-7 0612 Butte Sacramento Valley, Blavo 46 Comment
  RSA717293  Navarretia pubescens L. Ahart 2005-5-28 11822 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. 70 Comment
  CHSC116737  Navarretia tagetina Lowell Ahart 2016-5-24 20848 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  POM74520B  Navarretia tagetina C. C. Bruce 1898-05 1970 Butte Sloughs Comment
  SEINET3450874  Nemacladus interior Unknown 2003-7-10 10371 Butte Ponderosa Dam, Ponderosa Dam, about 1.5 air miles east, both sides of the dirt road to the power generator, north side of Ponderosa Reservoir 490 Comment
  SEINET12329565  Nemacladus interior Unknown 1984-1 4669 Butte At the Ponderosa Dam, ca 2 mi NW of Forbestown;along dirt road to the generator on the N side of 370 Comment
  UC726899  Nemophila heterophylla A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  UCSB63718  Nemophila heterophylla Blankenheim, Wendy 1991-4-16 Butte 150 yds. S of Butte Creek; .5 mi. W of Covered Bridge; 6.4 miles ESE of Chico; T. 22N., R. 2E.; sec. 25-midpoint near S boundary; Hamlin Canyon Quad.; 7.5 minute series 121 Comment
  UC24206  Nemophila menziesii Winifred Paine 1902-3-29 Butte Chico Comment
  CHSC101081  Nemophila pedunculata Lowell Ahart; John Dittes 2009-3-20 15499 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
  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
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  CHSC113399  Nemophila spatulata Lowell Ahart 2014-7-4 19555 Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  CHSC26848  Nemophila spatulata M. S. Taylor; M. Hayes 1978-5-24 1660 Butte Scattered on drier edges of montane meadow, on n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC75974  Nicotiana acuminata var. multiflora Lowell Ahart; Vernon H. Oswald 1999-8-13 8135 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
  SD7923  Notholithocarpus densiflorus R. M. Austin Butte Comment
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  RSA285937  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte Butte County,Naturalized in reservoir on N side of Nelson W road just E of Chico Butte City Road, Dodge Land Comment
  CHSC110260  Odontostomum hartwegii L. P. Janeway 2012-6-2 10834 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  UC844103  Odontostomum hartwegii Lewis S. Rose 1937-6-10 37362 Butte Hurleton 579 Comment
  RSA0123821  Opuntia polyacantha var. polyacantha Lyman Benson, Robert L. Benson 1961-8-31 16137 Butte 13 miles west of Arco. Snake River drainage area. 1524 Comment
  UC600724  Oreostemma alpigenum var. andersonii H. F. Copeland 1931-6-11 1534 Butte Butte Creek Meadows 1828 Comment
  RSA0059253  Orobanche californica subsp. grayana H. F. Copeland 1931-8-4 1444 Butte Jonesville. Comment
  RSA0059255  Orobanche californica subsp. grayana Herbert F. Copeland 1930-8-30 1380 Butte Jonesville. From same plot as no.1019. 1524 Comment
  CHSC45305  Orobanche californica subsp. jepsonii V. Oswald; R. Schlising 1988-9-12 3700 Butte Rocky ridge ca. 3 mi (air) e of Jonesville. 2026 Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET4854291  Orthocarpus bicolor Unknown 1902-5-10 5519 Butte Berry Canyon, (near Clear Creek). Comment
  RSA20876  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8337 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  SEINET10549678  Orthocarpus erianthus Mary Susan Taylor 1974-3-3 Taylor 66 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  SEINET10549690  Orthocarpus lacerus Mary Susan Taylor 1980-5-15 Taylor 2624 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
  SEINET6330764 Image available Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station Comment
  POM196027  Osmorhiza berteroi E. B. Copeland 1929-7-23 391 Butte Jonesville. 1550 Comment
  CHSC42636  Osmorhiza chilensis Vernon Oswald 1984-6-11 1272 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC3585  Oxalis pes-caprae Susan Carrauthers 1966-3-1 21 Butte City of Chico. East 5th and Olive Streets. Found in lawn. Comment
  CAS-BOT-BC316885  Packera eurycephala var. lewisrosei John Thomas Howell 1978-4-18 52847 Butte Magalia 731 Comment
  OBI15488  Packera eurycephala var. lewisrosei Lewis S. Rose 1967-6-11 67103 Butte 3 mi S of Pulga, Feather River Canyon 610 Comment
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10592878  Paspalum dilatatum Lowell Ahart 1982-10-15 Ahart 3895 Butte On dry gravelly soil along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. Not common. Foothill Woodland. 50 Comment
  CHSC78964  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  CHSC39528  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte In a meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CAS-BOT-BC202817  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 5 miles north-east of Oroville 609 Comment
  CHSC44039  Paxistima myrsinites L. P. Janeway 1987-6-8 2159 Butte Along French Cr ca 1/2 mi north of Bush Cr and near the bridge of road to Coyote Gap. 640 Comment
  CHSC36082  Pectocarya pusilla Robert A. Schlising; Coleta Lawler 1981-4-13 4028 Butte 2.1 miles N of bridge over Butte Creek at Centerville; W side of Nimshew Ridge; roadside bank. Comment
  SD4769  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville, grassy swamps 1550 Comment
  CHSC90157  Pedicularis densiflora Patricia Causey 1979-4-20 17 Butte About 1 mi southeast of Forest Ranch; west base of Doe Mill Ridge, 5 ft east of Doe Mill Road. 731 Comment
  CHSC26838  Pedicularis semibarbata M. S. Taylor 1978-6-24 1647 Butte Humboldt Summit, Butte Co and Tehama Co line. 2133 Comment
  CDA30220  Pellaea andromedifolia L. Ahart 2009-5-3 15781 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CAS-BOT-BC69331  Pellaea brachyptera Lowell Ahart 1985-6-17 5053 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 701 Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CAS-BOT-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC40286  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  SEINET10899920  Pellaea mucronata Mary Susan Taylor 1980-2-23 Taylor 2315 Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 Comment
  UC474209  Pellaea mucronata var. mucronata H. F. Copeland March, 1926 541 Butte near Chico (Iron Canyon) Comment
  RSA408435  Penstemon M. M. Boney 1897-1 4222 Butte [No location information provided.] Comment
  NY571127  Penstemon azureus var. angustissimus A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road, 3 miles from Chico at the lower limit of the digger pine belt 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
  CHSC27966  Penstemon gracilentus M. S. Taylor 1978-7-19 1780 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of tis jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  RSA407922  Penstemon heterophyllus subsp. purdyi L. Ahart 1984-6-8 4679 Butte Along the dirt road near the water tower, above the generator, ca. 1 mile E of Ponderosa Dam, ca. 2 miles N of Forbestown. 475 Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC44698  Penstemon laetus var. leptosepalus R. Banchero 1980-6-17 228 Butte Along Bald Rock Rd, 0.2 mi E of its jct with Zink Rd, 4.6 mi E of its jct with Hwy 162. 731 Comment
  CHSC44713  Penstemon laetus var. leptosepalus R. Banchero 1980-6-26 264 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32. 1219 Comment
  JEPS118483  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
  NY604521  Penstemon laetus var. leptosepalus Mrs. C. C. Bruce 06 1898 2415 Butte Forest Ranch Comment
  NY604522  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville Comment
  POM43769  Penstemon laetus var. leptosepalus C. C. Bruce 1898-06 2415 Butte Forest Ranch. Comment
  CHSC44723  Penstemon neotericus R. Banchero 1980-6-26 265 Butte Along Humbolt Rd 3.1 mi SW of its jct with the Skyway, 1.9 mi NE of its jct with Hwy 32. 1365 Comment
  SD4593  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville, dry hilltop 1650 Comment
  SBBG28898  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte above Jonesville 1900 Comment
  CAS-BOT-BC245681  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  CHSC10590  Pentagramma pallida Lowell Ahart 1966-2-20 Butte Sam's Ranch, Honcut. 60 Comment
  CHSC28988  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-19 2390 Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CAS-BOT-BC77089  Pentagramma triangularis subsp. triangularis R. A. Emmrich 1975-4-24 46 Butte Ca. 1/2 mi. E of Butte Creek and 1/4 mi. SE of Covered Bridge, 6 mi. ESE of Chico. 128 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  CHSC86076  Pentagramma triangularis subsp. triangularis R. D. Fischer; Paul Maslin 2003-12-24 18 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 150 yds. west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  JEPS106113  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CAS-BOT-BC77086  Pentagramma triangularis subsp. triangularis J. L. Wilson 1970-2-27 235 Butte North bank of Honey Run Road, approx. 50 yds. up hillside in rocks. Ca. 5 mi. east of intersection of Honey Run Rd. 91 Comment
  CHSC84394  Perideridia bacigalupii Lowell Ahart 2003-8-6 10474 Butte In the road gutter on the west side of Encina Grande Road, about 50 yards southeast of Truman Journey Way, about 2 miles (air) southeast of of Bloomer Hill, about 6 miles (air) northeast of Oroville Dam. Along the road for the next 3 miles. 609 Comment
  UC1609371  Perideridia bolanderi subsp. bolanderi Lowell Ahart 1993-6-20 7000 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC38744  Perideridia kelloggii Vernon Oswald 1983-6-7 644 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  CHSC40235  Perideridia lemmonii Vernon Oswald 1985-6-15 1830 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  CHSC26610  Persicaria amphibia M. P. Hayes 1977-9-24 118 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). In ditch along edge of road. 30 Comment
  CAS-BOT-BC413703  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CHSC55244  Persicaria hydropiperoides Lowell Ahart 1991-10-14 6715 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC31771  Persicaria lapathifolia L. Ahart 1974-9-25 634 Butte Peter Ahart Ranch, Honcut. Garden weed. 45 Comment
  CHSC94597  Persicaria lapathifolia Lowell Ahart 2006-9-11 13289 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC51274  Persicaria punctata Lowell Ahart 1990-10-3 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  UC1594635  Phacelia egena Lowell Ahart 1992-9-20 6922 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below high water line of lake, 3/4 mi sw of Rocky Point); Lake Oroville 243 Comment
  CDA13727  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1997-6-27 13905 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC46564  Phacelia heterophylla subsp. virgata V. Oswald; L. Ahart 1989-7-12 3842 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  CHSC46720  Phacelia imbricata R. A. Schlising 1982-7-28 4356 Butte Plumas National Forest, SE of Pulga and S of Coyote Gap Station. 838 Comment
  UC1046983  Phacelia imbricata Butte just below Los Plumas road junction with the Feather River Highway, about 14 miles northeast of Oroville Comment
  UC1051795  Phacelia mutabilis L. R. Heckard 1951-8-7 182 Butte between Chaparral and Butte Meadows Comment
  UCD88343  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson. Comment
  SEINET10658625  Phalaris caroliniana A. Arthur Heller 1914-4-17 Heller 11307 Butte Hills 8 mi. North of Oroville Comment
  JEPS87133  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  UC1609253  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte e of the Cherokee Canal and n of the Biggs Princeton Road about 3 mi w Biggs; e of Cherokee Canal 30 Comment
  SEINET10508599  Phalaris lemmonii Lowell Ahart 1984-5-10 Ahart 4600 Butte T17N R4E. Ca. 2.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CAS-BOT-BC250707  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 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
  CHSC75339  Phalaris paradoxa Lowell Ahart 1999-5-21 8068 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
  SEINET10716721  Phalaris paradoxa Lowell Ahart 1989-5-23 Ahart 6255 Butte About 1/2 mile west of the Oroville Bangor Highway, about 1 mile NW of Bangor, along edges of Avocado Road. Foothill woodland. Uncommon, growing on dry gravelly disturbed soil 213 Comment
  SEINET194972  Philadelphus californicus A. A. Heller 1938-5-30 15130 Butte Near Grizzly Dome tunnel on Highway 24. 610 Comment
  CAS-BOT-BC77376  Philadelphus lewisii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UC1392744  Philadelphus lewisii R. F. Hoover 1968-5-29 11136 Butte Cohasset Road Comment
  SEINET10482894  Philadelphus lewisii subsp. californicus Heidi H. Schmidt 1993-6-15 Schmidt 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC28564  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi w of Lake Madrone. 997 Comment
  CHSC44459  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville. 259 Comment
  CHSC49566  Phleum pratense Vernon Oswald 1983-6-22 750 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. In a meadow near a stream. 1264 Comment
  UC600675  Phlox austromontana E. B. Copeland Jul 1930 Butte above Jonesville 1900 Comment
  CHSC13484  Phoradendron densum T. Brumley 1974-4-28 9 Butte Found ca. .5 mi se of Magalia Reservoir and ca. 5 mi ne of Paradise. 609 Comment
  SD1138  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  CHSC30387  Phoradendron villosum J. D. Jokerst 1979-2-23 1133 Butte Top of North Table Mt., N of Cherokee Rd. On lone Quercus douglasii in open grasslands. 381 Comment
  CHSC31220  Phoradendron villosum M. S. Taylor; J. D. Jokerst 1979-10-13 2256 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  SEINET10936355  Phoradendron villosum Mary Susan Taylor 1981-1-5 Taylor 3373 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
  CHSC55062  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 6725 Butte On the south end of the dam at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC11342  Physalis philadelphica Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36431  Physocarpus capitatus Robert A. Schlising; Coleta Lawler 1981-8-8 4192 Butte E of Paradise at Concow Reservoir. Roadside. Comment
  CHSC48856  Physocarpus capitatus Vernon Oswald; M. S. Taylor 1985-5-30 1789 Butte Four Trees Rd. 0.5 mi e of Hwy 70. Along the road. 536 Comment
  RSA746978  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CAS-BOT-BC76940  Pilularia americana Lowell Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC29003  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte Just e of Chico. Ne corner of jct of Notre Dam Blvd and the Skyway, ca 1/8 mi of Hwy 99. 68 Comment
  CHSC29996  Pilularia americana L. Ahart 1980-4-19 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC5976  Pinus mugo var. mughus M. MacArthur 1968-6-12 143 Butte SW wall of PSA bld., Chico State College campus. 60 Comment
  CHSC3448  Pinus radiata Judy Potter 1966-3-23 Butte SE corner library Chico State College Chico. Comment
  CHSC88294  Piperia elongata Lowell Ahart 2004-6-22 11114 Butte On the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  CHSC79625  Piperia transversa G. F. Hrusa; T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 820 Comment
  CHSC68710  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Below the cement of the low water crossing, Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC43592  Pistacia vera Vernon Oswald 1987-4-29 2357 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  SEINET10529947  Pityrogramma triangularis var. pallida Mary Susan Taylor Taylor 984 Butte Bidwell Park, Chico. Comment
  SEINET10497366  Plagiobothrys austiniae Lowell Ahart 1984-4-6 Ahart 4544 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, ca. 2 miles S of Paradise, east side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  SEINET12320810  Plagiobothrys bracteatus Unknown 1979-1 20 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  POM197245  Plagiobothrys fulvus var. campestris H. F. Copeland 1929-4-5 1128 Butte Near Chico. Comment
  CHSC25484  Plagiobothrys greenei L. Ahart 1977-4-15 1297 Butte Found in the bottom of swales and vernal pools. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC228257  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  CHSC29271  Plagiobothrys hispidulus R. A. Schlising 1980-6-2 3627 Butte Northern Butte Co., 0.1 mi s of jct Humboldt Road and Humbug/Skyway at Butte Meadows. Comment
  CHSC46553  Plagiobothrys hispidulus V. Oswald; L. Ahart 1989-7-12 3852 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC29050  Plagiobothrys humistratus R. A. Schlising 1980-4-20 3568 Butte Between Singer Creek and Cana-Pine Creek Road. In trail. Comment
  CHSC14044  Plagiobothrys nothofulvus J. A. Guichard 1973-4-4 10 Butte Found above Chico Creek between Salmon Hole and Devils Kitchen 300 yds from Upper Bidwell Park. Comment
  CHSC24974  Plagiobothrys nothofulvus J. Cox 1976-3-10 43 Butte N. Table Mt., ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC35056  Plagiobothrys scriptus R. A. Schlising 1981-3-16 4002 Butte About 3 miles E of Chico along Humboldt Road, paralleling Hwy 32. At roadside. 114 Comment
  CDA40661  Plagiobothrys stipitatus T. C. Fuller 1958-4-15 4794 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC112886  Plagiobothrys stipitatus var. micranthus Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 170 ft NW of Larkin Road. 42 Comment
  CHSC13522  Plagiobothrys stipitatus var. micranthus S. Poe 1974-4-22 9 Butte Ca. 50 yds. s of Fern Bank area, upper Bidwell Park. 73 Comment
  CHSC54380  Plagiobothrys stipitatus var. micranthus M. Bailey 1991-4-19 565 Butte At margin of seasonal drainage ca 200 ft e of Williams Road and ca 1/4 mi n of Pentz Road; near Wallis Ponds. 85 Comment
  CHSC82411  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS117197  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  RSA0114655  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2015-5-5 20137 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  UCD80157  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-13 SNFN 0080 b Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock, near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  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
  RSA0118696  Planodes virginica Lowell A. Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 0.4 mile east of the intersection of Pennington Road and Colusa Highway, about 5.5 miles west of Gridley. 23 Comment
  CHSC42070  Plantago coronopus Kevin Lund 1986-4-15 16 Butte Ca. 13 mi n of Chico on Hwy. 99. Comment
  UC1594610  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte e side Oroville Dam (on the s side of the spillway of Oroville Dam) 274 Comment
  CHSC39769  Plantago erecta D. McClain 1968-3-9 6 Butte Abundant on slopes below cliffs ca. 1000 yds. N. of road, ca. 2.2 miles from end of paved road in Upper Bidwell Park, Chico. 198 Comment
  UC1125624  Plantago erecta C. G. Albertus 1933-5-29 5 Butte 1.5 mi n Wick; Chico Quad. 60 Comment
  SEINET8246451  Plantago erecta George Kingston 1980-3-5 6 Butte ne of Horseshoe Lake in Bidwell Park, Chico. 152 Comment
  CHSC107433  Plantago lanceolata L. P. Janeway 2011-6-29 10407 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC116306  Plantago major Lowell Ahart 2015-11-18 20663 Butte 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
  CHSC86131  Platanthera leucostachys John Dittes 2002-6-29 626 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  SEINET10470070  Platanthera sparsiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4757 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  SEINET4890922  Platanus racemosa R. McKee 1909-1 s.n. Butte Chico Comment
  CAS-BOT-BC91593  Platystemon californicus H. E. Brown 1897-4-15 467 Butte Near Clear Creek. 53 Comment
  CHSC3659  Platystemon californicus Robert D. Briggs 1966-4-12 R- 120 Butte 3 miles south of downtown Chico. Comment
  POM225861  Platystemon californicus var. californicus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC50063  Plectritis ciliosa Lowell Ahart 1990-4-8 6447 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  SEINET10938875  Plectritis ciliosa Mary Susan Taylor 1980-4-16 Taylor 2488 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  JEPS119739  Plectritis macrocera Lowell Ahart 2012-3-23 17790 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC41972  Poa annua Lowell Ahart 1986-11-7 5425 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 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
  CHSC28553  Poa bolanderi M. S. Taylor 1978-7-19 1777 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  RSA700238  Poa bolanderi L. Ahart 2004-7-23 11305 Butte On the east side of the road, North of the West Branch Campground, South of the bridge across the West Branch of the Feather River, About 1.5 miles (air) west of Philbrook Reservoir Dam., About 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  CHSC20455  Poa bulbosa C. Glascock 1965-4-6 304 Butte Ca. 1/4 mi. SE of intersection of Keefer Rd. and Cohasset, ca. 6 mi. NW of Chico. Comment
  CAS-BOT-BC255066  Poa compressa Lowell Ahart 1983-9-17 4438 Butte Ca. 0.25 mile SE of Stirling City 1100 Comment
  CHSC83100  Poa pratensis P. Moyer 1972-4-16 189 Butte CSUC Campus. S bank of Chico Ck. between Warner St. and New Dorm Bridge. 60 Comment
  CHSC71216  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  CHSC100189  Poa secunda subsp. secunda John Dittes 1992-5-5 465 Butte Sierra Nevada Range Foothills; ca. 2.6 air miles southeast of Paradise Civic Center, ca. 1.8 air mile west of West Branch of Feather River, ca. 1.3 air mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CHSC44591  Poa secunda subsp. secunda Lowell Ahart 1979-5-7 1858 Butte Along edges of wash, east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  UC821116  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 mi n Chico 64 Comment
  CHSC52215  Pogogyne zizyphoroides Linda Osborn 1980-4-22 18 Butte Ca 6 mi n jct of Esplanade on Hwy 99, 250 yds w. Comment
  CHSC61718  Polanisia dodecandra subsp. trachysperma Vernon H. Oswald; Lowell Ahart 1993-8-25 5853 Butte Hwy. 32 between Forest Ranch and Lomo, at the 34.0 mi paddle marker. 1060 Comment
  CAS-BOT-BC167554  Polygala cornuta var. cornuta C. R. Quick 1951-8-21 51 100 F Butte Near Lomo Junction Comment
  CAS-BOT-BC167560  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi. se. of Paradise on Pentz Road 426 Comment
  CDA31969  Polygonum arenastrum L. Ahart 2009-6-12 15846 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC107246  Polygonum aviculare Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 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
  JEPS104284  Polygonum bidwelliae Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10217 Butte Rifle and Trap Range, NE of Horseshoe Lake, N of Parking Area E, Upper Bidwell Park, about 1 1/2 mi E of Manzanita Avenue, Chico 106 Comment
  JEPS115656  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  SEINET3405102 Image available Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Volcanic outcrops along Neale grade on road from Chico to Paradise Comment
  JEPS94976  Polygonum bolanderi Vernon Oswald and Lowell Ahart 1997-9-9 8861 Butte 2.0 mi ne of Lomo (Humboldt Road between Lomo and Butte Meadows, near the 4833 ft. benchmark); Humboldt Road Comment
  UC204387  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit 1463 Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  UC127747  Polygonum convolvulus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA4393  Polygonum davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. 2100 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
  HSC100820  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte ~10 yd. N of the trail, N of the crossing and on the E side of Big Chico Creek, ~50 yd. W of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 204 Comment
  UCR219100  Polygonum lapathifolium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15604 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  UC1509633  Polygonum persicaria L. Ahart 1982-10-6 3845 Butte ca 3 mi ne Hocut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  SEINET10479671  Polygonum phytolaccifolium Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5118 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  RSA0035340  Polygonum punctatum 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
  SEINET11715827  Polypodium californicum J. D. Mott 1978-1 13 Butte West Branch Feather River 280 Comment
  CAS-BOT-BC71858  Polypodium californicum D. E. Nay 1975-4-10 28 Butte ca. 200 m SSW of Covered Bridge on hillside, 6.4 mi ESE of 99E/Skyway jct, Chico 137 Comment
  CHSC2177  Polypogon interruptus H. Silberman; D. Isaac 1949-5-17 Butte N. side of Big Chico Creek canyon, 7 1/2 mi. ENE of Chico. 243 Comment
  CHSC37109  Polypogon maritimus L. Ahart 1982-10-15 3888 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CAS-BOT-BC232577  Polypogon monspeliensis John Thomas Howell 1959-9-20 34618 Butte E outskirts of Oroville 60 Comment
  CHSC32686  Polystichum imbricans M. S. Taylor 1981-3-18 3420 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  SEINET10530117  Polystichum imbricans Mary Susan Taylor 1979-9-28 Taylor 2202 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC72266  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River 929 Comment
  POM120956  Polystichum imbricans subsp. curtum C. C. Bruce 1897-05 1865 Butte Forest- Ranch. Comment
  JEPS106115  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CHSC33978  Polystichum munitum M. S. Taylor 1981-5-14 3708 Butte S side of 22N49 at jct where creek crosses the rd (next creek e of Little Ram Creek), ca. 1 mi sw of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi n of Mt House on Oroville-Quincy Hwy. 975 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
  SEINET10539205  Populus trichocarpa Mary Susan Taylor 1975-8-31 Taylor 896 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
  SEINET10460842  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Submerged or reaching surface of water in lily pond near Butte Creek House 1750 Comment
  CHSC28613  Portulaca oleracea R. A. Schlising 1979-10-23 3491 -1 Butte SW of Chico and E of Orbend, at west margin of Butte County, at Sacramento River and Ord Ferry Road. Comment
  CHSC65413  Potamogeton Vernon Oswald 1988-10-25 3718 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CHSC38888  Potamogeton crispus Vernon Oswald 1983-6-7 650 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  CAS-BOT-BC267143  Potamogeton foliosus Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CHSC31816  Potamogeton foliosus L. Ahart 1975-7-5 847 Butte Pond; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC80920  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS102326  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 Butte about 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, W side of North Honcut Creek) 38 Comment
  CHSC51953  Potamogeton natans L. P. Janeway 1987-6-8 2166 Butte Along French Cr across from mouth of Ram Cr. Pond. 617 Comment
  CAS-BOT-BC453811  Potamogeton nodosus Herbert L. Mason 1945-7-10 12640 Butte Sanford slough, Butte Sink, southwest corner of Butte County. Comment
  UC1586528  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte about 2 mi e of Honcut; Joie Osgood Ranch 45 Comment
  RSA4416  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CAS-BOT-BC143108  Potentilla breweri V. Oswald; L. Ahart 1888-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  UC1564800  Potentilla drummondii V. Oswald and L. Ahart 1989-7-12 3855 Butte ca 2 air mi sw Lotts Lake (ca 3 air mi se of Philbrook Reservoir); meadow near headwaters of Big Kimshew Creek 1901 Comment
  UCR190829  Potentilla glandulosa 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
  CHSC45740  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-19 2224 Butte Along Sly Cr at crossing of rd to SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. Cyn bottom near the cr. 1097 Comment
  CHSC38646  Potentilla glandulosa subsp. glandulosa Vernon Oswald 1983-5-8 449 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel ca. 200 ft downstream from Chico Creek. 79 Comment
  CHSC26856  Potentilla gracilis var. fastigiata M. S. Taylor; M. Hayes 1978-6-24 1666 Butte Meadow, on n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  JEPS47186  Potentilla rivalis W. L. Jepson 1939-8-17 19455 Butte near Oroville; Feather River, near Oroville 45 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  JEPS110470  Prosopis glandulosa var. torreyana Lowell Ahart, Mike G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area) 21 Comment
  CHSC102615  Prunella vulgaris var. lanceolata Lowell Ahart 2009-7-9 16010 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
  CHSC43835  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-19 2226 Butte Along Sly Cr where rd from Challenge-LaPorte Rd rd to SE side of Sly Cr Reservoir crosses; 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  UCD80399  Prunella vulgaris var. lanceolata CNPS SN Foothill Team 2005-7-5 SNNR 0566 Butte CSUC, Big Chico Creek Ecological Reserve. 286 Comment
  CHSC109174  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, soouth of the path, south of the paved park road,south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC159919  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CHSC111416  Prunus ilicifolia subsp. ilicifolia Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC154598  Prunus persica John Thomas Howell 1976-7-14 51816 Butte Feather RIver Canyon Highway, just east of Jarbo Gap. Southwest of Bucks Lake on road to Oroville 640 Comment
  CHSC87417  Prunus subcordata R. D. Fischer 2004-4-3 107 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Pine Trail and along upper portion of 10 Mile House Trail. 426 Comment
  CHSC31586  Pseudognaphalium luteoalbum L. Ahart 1975-7-19 897 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC92512  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS108883  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  JEPS124148  Pseudognaphalium luteoalbum Lowell Ahart 2015-11-7 20629 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC104799  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CHSC41999  Pseudognaphalium thermale Lowell Ahart 1975-9-4 973 Butte Along the South Fork of the Feather River, about 1/2 mile north of the Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC6051  Psidium guajava M. MacArthur 1968-6-22 276 Butte NE EP bld., ca. 30 ft., Chico State College. 60 Comment
  SD5471  Psilocarphus tenellus E. B. Copeland 1931-7-20 Butte Jonesville 1700 Comment
  CHSC103939  Psilocarphus tenellus var. globiferus Lowell Ahart 2010-5-22 16722 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 387 Comment
  CHSC38662  Ptelea crenulata Vernon Oswald 1983-5-1 403 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 2000 ft W of Brown's Hole. 170 Comment
  UC109312  Ptelea crenulata Mrs. R. M. Austin jun 1879 263 Butte Comment
  CAS-BOT-BC72553  Pteridium aquilinum Javier Penalosa 1962-6-18 2443 Butte Near confluence of French and Peavine Crks. 609 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
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC38621  Pterostegia drymarioides Vernon Oswald 1983-4-9 302 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.4 mi e of the power lines. 350 Comment
  CHSC59122  Pterostegia drymarioides L. P. Janeway; B. Castro 1992-5-9 4164 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. At base of rocks on southeast-facing slope. 89 Comment
  CHSC82436  Pterostegia drymarioides Lowell Ahart 2002-5-6 9607 Butte Bulldozed road, on top of the face of the exposed sand mine, east of the very beginning of Schirmer Ravine, about 200 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 243 Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  CHSC30770  Pyrola aphylla M. S. Taylor; R. S. Schlising 1980-7-6 3070 Butte On e side of Hwy 32, ca. 1 mi n of Soda Springs. 1280 Comment
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  CDA13242  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-8 13089 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  UC474257  Pyrola picta E. B. Copeland 1930-7-21 Butte Jonesville Comment
  CAS-BOT-BC466010  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CHSC110114  Pyrus calleryana L. P. Janeway 2012-3-6 10791 Butte Sacramento Valley. Southern edge of Chico; fenceline along west side of Hwy 99 just south of Estates Drive. 65 Comment
  CAS-BOT-BC94696  Quercus X howellii John Thomas Howell 1955-6-15 30495 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC109088  Quercus X morehus Lowell Ahart 2012-4-20 17894 Butte On the north side of the drainage, about 100 yards west of the intersection of Ten Mile House Road and South Rim Trail, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  UC1135512  Quercus berberidifolia J. E. Sowder, C. G. Albertus 1933-6-26 95 Butte 1 mi ne Nelson's Bar on Pentz road; Chico Quad. 457 Comment
  CHSC32645  Quercus chrysolepis M. S. Taylor 1981-3-18 3421 Butte In shady ravine, n side of Pulga Rd, ca. 1/2 mi e of its jct with Hwy 70 at Pulga Bridge. 487 Comment
  CDA13880  Quercus chrysolepis var. chrysolepis G. F. Hrusa, T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada; Near summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. and Comment
  JEPS95870  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte about 7 miles (air) north of Oroville; North Table Mountain; North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  CHSC46974  Quercus chrysolepis var. nana Vernon H. Oswald 1989-8-9 3930 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.8 mi sw of Humboldt Rd, ca. 1.5 mi (air) sw of Butte Meadows. 1310 Comment
  SEINET13953256 Image available Quercus dumosa A. A. Heller 1916-1 12650 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  CAS-BOT-BC62796  Quercus garryana var. breweri John Thomas Howell 1962-6-15 37439 Butte Magalia 731 Comment
  UC1135617  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-28 98 Butte 2 mi e Keefer's Old Mill; Chico Quad. 365 Comment
  CHSC30793  Quercus kelloggii M. S. Taylor 1980-5-27 2657 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  UCD46845  Quercus lobata P. Akers 2002-5-5 s.n. Butte Pacific Heights Rd, Oroville, near river. 36 Comment
  RSA399351  Ranunculus alismifolius var. alismellus H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  SEINET516312  Ranunculus alismifolius var. hartwegii Vernon H. Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just W of Scout Rd. in Butte Meadows. 1326 Comment
  POM150530  Ranunculus aquatilis var. capillaceus E. B. Copeland 1903-5-30 3276 Butte Chico. Comment
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Jan 23 2011
  CHSC52776  Ranunculus aquatilis var. hispidulus B. Castro 1982-4-14 16 Butte In stream atop s end of North Table Mtn, off Cherokee Rd ca. 4 mi n of Oroville. 152 Comment
  RSA0036029  Ranunculus arvensis Lowell A. Ahart 2012-5-2 17961 Butte About 30 yards northeast of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 91 Comment
  CAS-BOT-BC378957  Ranunculus bonariensis Lowell Ahart 1980-4-19 2088 Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC3513  Ranunculus canus M. Gregg 1966-2-28 24 Butte In Upper Bidwell park--East of Salmon Hole. Across road. Comment
  CHSC52821  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 37 Butte N part of county at s end of Crane Valley; in meadow. 1584 Comment
  CDA34169  Ranunculus muricatus L. Ahart 2009-4-3 15538 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  JEPS107343  Ranunculus muricatus Lowell Ahart 2005-4-2 11693 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
  CHSC115444  Ranunculus occidentalis M. Sutton; C. Yasuda 2013-4-9 28 Butte Centerville Flumes. 350 Comment
  CHSC85402  Ranunculus occidentalis John Dittes; Josephine Guardino 1992-5-7 477 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC41521  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-27 358 Butte N part of county, n of Philbrook Reservoir, at Coon Hollow. Near jeep trail. 1706 Comment
  CHSC77994  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC111394  Raphanus raphanistrum Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18013 Butte On disturbed soil, on the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC34565  Raphanus raphanistrum R. E. Preston; L. E. Preston 1982-1-1 157 Butte In almond orchard, e side of River Rd. ca. 1 mi s of Sacramento Ave.; Chico Landing site, ca. 5 mi w of Chico. Comment
  CHSC25522  Rhamnus ilicifolia Marc Hayes; Warner 1977-9-11 64 Butte Along roadside, ca. 3 m s of road on Humboldt Rd., ca. .5 mi from junction of Humboldt Rd. and Hwy 32 (exactly 5.2 miles from Hwy 99 overpass on Hwy 32 in Chico). 152 Comment
  CHSC52197  Rhamnus ilicifolia L. P. Janeway 1989-5-19 3265 Butte Serpentine outcrop and open area near upper se'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  CHSC92743  Rhamnus tomentella subsp. tomentella L. P. Janeway 2005-6-26 8433 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
  RSA518944  Rhamnus tomentella subsp. tomentella J. T. Howell 1959-9-20 34701 Butte Feather River Hwy 5.9 miles below W Branch bridge. Comment
  RSA712801  Rhamnus tomentella subsp. tomentella L. P. Janeway 2005-6-26 8433 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  CHSC6650  Rhododendron M. MacArthur 1968-6-22 273 Butte Entrance of SM bld., Chico State College. 60 Comment
  UC105989  Rhododendron occidentale Mrs. R. M. Austin June, 1896 138 Butte California Comment
  CHSC44064  Rhynchospora californica L. P. Janeway 1988-5-30 2717 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 1/2 mi NE of the power lines. 152 Comment
  SFV1603  Ribes bracteosum M. L. Vincent 1962-4-15 184 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  CHSC11907  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow, in the open. 1800 Comment
  SEINET10482943  Ribes nevadaense Mary Susan Taylor 1981-3-24 Taylor 3446 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC212668  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte Banks of the Feather River, near Stirling Comment
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  UC129470  Ribes nevadense Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC725919  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte at foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC198962  Ribes roezlii var. roezlii A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico Comment
  CAS-BOT-BC173953  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  UC1950039  Robinia pseudoacacia Lowell Ahart 2009-4-26 15609 Butte About 10 miles northeast of Chico, 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 461 Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  JEPS110370  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field 31 Comment
  SEINET260316  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1986-11-9 5451 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam 1/4 mi ESW of Oroville 1/4 mi E of Larkin Rd 37 Comment
  CHSC48342  Rorippa palustris var. hispida Vernon Oswald 1987-6-5 2955 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glenn County because of shifting channel). 33 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
  JEPS99064  Rosa eglanteria Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) NE of Honcut, about 12 miles (air) SE of Oroville. 60 Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along 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
  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
  CHSC93959  Rosa pisocarpa R. D. Fischer 2004-6-20 756 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  CAS-BOT-BC148254  Rosa woodsii var. ultramontana Clarence R. Quick 1952-6-29 52 -88 Butte Near spring, 0.3 mile west of Coyote Gap on Mill Creek Road - Sierra Nevada Comment
  CHSC20098  Rosmarinus officinalis M. S. Taylor 1975-4-8 449 Butte On se corner of Little Cafeteria, California State University, Chico. 60 Comment
  UCD92292  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Butte County. Comment
  CDA5119  Rotala indica G. D. Barbe, June McCaskill 1990-9-5 4369 a Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CDA37505  Rotala ramosior T. C. Fuller 1976-7-8 20146 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CHSC86141  Rubus glaucifolius John Dittes; Josephine Guardino 2002-6-21 620 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  RSA699538  Rubus pensilvanicus R. D. Fischer 2004-4-18 171 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E-side addition along Hwy 32. Located on sandy soil, W side Big Chico Creek near beginning of Yahi Trail. 91 Comment
  CHSC6574  Rudbeckia hirta var. pulcherrima R. Carter 1966-7-10 485 Butte Found 1 mi. S Butte-Plumas Co., line along W side Oroville-Quincy Rd., in field. 1371 Comment
  JEPS124321  Rumex crispus Lowell Ahart 2015-10-20 20574 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  UC204581  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Chico Meadows Sierra Nevada 1219 Comment
  CAS-BOT-BC421614  Rumex crispus John Thomas Howell 1962-6-15 37476 Butte Magalia 731 Comment
  CAS-BOT-BC433778  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge instead of Ponderosa Way. 550 Comment
  CHSC36956  Sagina apetala M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4365 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  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
  CHSC96487  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 63 Comment
  CHSC36073  Sagina procumbens R. A. Schlising 1982-5-29 4228 Butte Chico; State University campus on n side of Library. Comment
  CHSC33281  Sagina saginoides R. A. Schlising 1981-6-11 4075 Butte NE of Butte Meadows and SW of Cherry Hill Campground in Lassen National Forest; along Butte Creek. Comment
  CAS-BOT-BC445782  Sagittaria longiloba Carl Wick 1988-6-17 s.n. Butte South of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton 39 Comment
  SEINET10938868  Sagittaria sanfordii Mary Susan Taylor 1978-5-7 Taylor 1606 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SD933  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  UCD110826  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow. 1750 Comment
  CHSC90934  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET11987376  Salix exigua E. L. Smith 1971-1 1064 Butte Big Chico Creek in Bidwell Park, Chico Comment
  UC437339  Salix exigua var. hindsiana W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek) Comment
  CAS-BOT-BC107835  Salix gooddingii J. T. Howell 1959-9-20 34657 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC108823  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte On the west side of a deep ditch, area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  RSA28801  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville road 12 miles from Chico on the banks of Dry Creek. Comment
  CAS-BOT-BC104077  Salix hindsiana Peter H. Raven 1953-5-9 5450 Butte 6.5 miles from Bangor on road to Oroville Comment
  CHSC65019  Salix jepsonii Vernon Oswald 1988-6-20 3410 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  LA208766  Salix lasiolepis A. A. Heller; 1914-4-27 11324 Butte 8 mi N of Oroville Comment
  RSA28802  Salix lasiolepis A. A. Heller 1914-4-27 11324 Butte 8 miles N of Oroville. Comment
  UC726480  Salix lasiolepis A. A. Heller 1919-5-17 13164 Butte near Stirling; Feather River 975 Comment
  CAS-BOT-BC129623  Salix lasiolepis var. lasiolepis John Thomas Howell 1959-9-20 34658 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  SEINET177031  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. 1700 Comment
  CAS-BOT-BC125950  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  RSA768858  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Sacramento Valley. Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between creek and Humboldt Road. 63 Comment
  CAS-BOT-BC221113  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte Forest Ranch 822 Comment
  RSA123292  Salvia sonomensis A. E. Wieslander, J. E. Sowder 1933-6-24 326 Butte Keefer Ridge. 305 Comment
  CHSC4518  Sambucus C. Glascock 1965-4-28 365 Butte On nw side of Little Chico Creek at corner of Arcadian and Sowilleno Sts., Chico. Comment
  CHSC6021  Sambucus mexicana M. MacArthur 1968-6-19 242 Butte NW end of bridge to PSA bld., Chico State College. 60 Comment
  CHSC31405  Sanicula bipinnata Stephen M. Turek 1980-4-14 6 Butte Ca. 3 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  UC217478  Sanicula bipinnatifida H. M. Hall 1917-5-13 10301 Butte Paradise Comment
  SEINET12120679  Sanicula bipinnatifida M. S. Camp 1974-1 29 Butte N side of Table Mountain, 6 mi N of Oroville Comment
  CHSC30825  Sanicula crassicaulis M. S. Taylor; J. D. Jokerst 1980-4-18 2514 Butte Along shady creek w side of Humbug Rd, ca. 1 mi s of Nimshew. 609 Comment
  CHSC32146  Sanicula tuberosa L. Ahart 1973-3-24 178 Butte By road, Swedes Flat Rd near Bangor. 152 Comment
  JEPS104026  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  UC566791  Sanicula tuberosa Herbert L. Mason 1927-5-11 3727 Butte vicinity of Dobbins 457 Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  JEPS115232  Saxifraga integrifolia Lowell Ahart, John Dittes 2009-3-20 15510 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  UC858207  Saxifraga oregana A. A. Heller 1914-6-22 11493 Butte Chico meadows Chico 1219 Comment
  UCD128062  Scandix pecten-veneris B. Castro 1982-4-8 10 Butte south side of Hwy 70, ca. 5 miles from junction of Hwys 70 and 149, ca. 9 miles northeast of Oroville. 146 Comment
  SEINET10472665  Schoenolirion album Mary Susan Taylor 1977-8-17 Taylor 1465 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  UCD50073  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-7 12993 Butte Big pond near river, Grey Lodge Game Refuge; Gridley Road north of Butte Sink, Butte County. Comment
  UCD50106  Schoenoplectus californicus A. A. Beetle 1941-6-27 2739 Butte Butte County, 4 miles north of Ruchvale, Rte 99E, irrigation ditch along roadside. Comment
  CHSC66366  Schoenoplectus mucronatus Vernon H. Oswald 1996-6-20 7836 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A seasonal marsh at the SW corner of Tract 2, Sanctuary II. 33 Comment
  SEINET10467323  Scirpus carinatus Mary Susan Taylor 1981-5-6 Taylor 3622 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CHSC56795  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-16 3033 Butte Large meadow at 'headwaters' of Willow Creek. 1935 Comment
  CHSC31943  Scirpus diffusus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 847 Butte Chico Meadows, community of Butte Meadows, 1.1 mi N of jct. of Skyway and Humboldt Rd. along Scout Rd. 1341 Comment
  CHSC56813  Scirpus microcarpus L. P. Janeway 1987-7-4 2414 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CAS-BOT-BC239962  Scribneria bolanderi Lowell Ahart 1985-5-15 4971 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
  CHSC103745  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC29300  Scribneria bolanderi J. D. Prouty 1980-4-25 80 .81 Butte N of Serene Lane ca. 3 mi. s of Oroville. 82 Comment
  JEPS115817  Scribneria bolanderi Lowell Ahart 2009-4-26 15632 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
  CHSC44402  Scutellaria californica Lowell Ahart 1988-6-21 6057 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  CHSC793  Scutellaria californica 1929-5-19 Butte 5 mi. above Concow on road to Flea Valley (near Stirling). 609 Comment
  CHSC74681  Scutellaria siphocampyloides Mary Bailey 1990-5-5 Butte North side of Nance Canyon. 152 Comment
  SBBG128802  Scutellaria siphocampyloides L. Ahart 2013-5-27 18708 Butte under trees ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 763 Comment
  CHSC59326  Scutellaria tuberosa J. L. Guardino 1992-4-16 5 Butte Paradise, 1/4 mi s of Circle Dr., terminus. 472 Comment
  CHSC42518  Secale cereale Lowell Ahart 1987-5-6 5571 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
  CHSC23467  Sedella pumila J. R. Lee 1974-4-22 3 Butte 15 yards n of the Skyway roadside ca. 6 mi se of the Chico city limits. 152 Comment
  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
  UCD101997  Sedella pumila E. H. Stanford 1940-4-14 s.n. Butte Table Mountain, near Cherokee. Comment
  CAS-BOT-BC415017  Sedella pumila Mrs. C. C. Bruce 1897-3-1 1776 Butte Foothiils Comment
  SEINET8472428  Sedella pumila A. A. Heller, H. E. Brown 1902-5-7 5486 Butte Berry Canyon , near Clear Creek. Comment
  CHSC31078  Sedum spathulifolium Herb Allen McLane 1980-4-25 9 Butte 10 ft s of Ponderosa Way, Plumas National Forest. 487 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
  CAS-BOT-BC62120  Selaginella hansenii John Thomas Howell; Gordon H. True 1967-5-9 42232 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CHSC28877  Selaginella hansenii M. S. Taylor 1980-3-1 2330 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CAS-BOT-BC62121  Selaginella hansenii Lowell Ahart 1979-4-3 s.n. Butte near N Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  JEPS113218  Selaginella wallacei Lowell Ahart 2007-2-24 13584 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  CAS-BOT-BC363287  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 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
  RSA712950  Senecio eurycephalus var. lewisrosei L. Ahart 2006-5-10 12616 Butte Bardees Bar Road, about 100 yards north of poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of pulga. 355 Comment
  SEINET10904906  Senecio eurycephalus var. lewisrosei Mary Susan Taylor 1978-5-6 Taylor 1582 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  CAS-BOT-BC5710  Senecio lewisrosei Lewis Samuel Rose 1939-6-7 39247 Butte North Fork of the Feather River, 3 mi S of Pulga 609 Comment
  JEPS115628  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC4002  Senecio vulgaris L. R. Alexander 1967-3-20 9 Butte Chico. Found at Almond Grove Trailor Park 567 E. Lassen Ave. Space 506. 59 Comment
  CHSC92561  Senecio vulgaris L. P. Janeway 2005-3-1 8334 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS104835  Sericocarpus oregonensis Dean W. Taylor 1995-8-6 15388 Butte N end Rocky Ridge; 6 air mi E of Paradise, northern rim of North Fork Feather River canyon; Lassen National Forest 975 Comment
  CDA32075  Sesbania punicea C. Owens 2010-9-23 s.n. Butte Chico; 10 meters downstream of River Road in Shady Oak Slough (which connects to Little Chico Creek). 0 Comment
  CDA43366  Sesbania punicea D. G. Kelch 2012-9-19 12 .354 Butte Oroville, immediately west of sewage treatment plant. Comment
  SEINET10507606  Setaria glauca Lowell Ahart 1990-10-21 Ahart 6638 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. Foothill Woodland (destroyed). T21N R4E NW/S5. 213 Comment
  CHSC45319  Setaria parviflora Vernon Oswald 1988-10-29 3722 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 Comment
  CHSC38855  Setaria pumila Vernon Oswald 1983-7-8 840 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  SEINET10507623  Setaria viridis Mary Susan Taylor 1982-8-16 Taylor 4989 A Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  HSC32630  Sherardia arvensis Gary S. Lester 1974-4-20 108 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  CHSC48610  Sidalcea asprella Vernon H. Oswald 1985-4-29 1726 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  LA205920  Sidalcea asprella subsp. asprella C. L. Hitchcock; 1952-5-28 19536 Butte Oroville - Forbestown Road, about 8 mi. E of Oroville Comment
  CHSC29409  Sidalcea calycosa R. A. Schlising 1980-6-1 3612 Butte S of Paradise at Kunkle Res., off Magalia Hwy. 440 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
  UC871456  Sidalcea calycosa A. A. Heller 1914-3-23 11225 Butte 8 mi n Oroville; n of Oroville Comment
  SEINET11992378  Sidalcea calycosa M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5404 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  CHSC45942  Sidalcea diploscypha Lowell Ahart 1978-5-16 1735 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC34954  Sidalcea gigantea R. Schlising; R. Banchero 1980-7-31 3940 Butte Ca 4.8 mi S of Inskip, at water supply pond for Stirling City. 1133 Comment
  CHSC82967  Sidalcea gigantea L. P. Janeway; B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside. 1341 Comment
  JEPS109821  Sidalcea gigantea Dean W. Taylor 2004-7-22 19207 Butte Four Trees Road (Forest Road 23N00) ca. 0.3 miles North of Coyote Gap 1310 Comment
  POM282877  Sidalcea glaucescens Lyman Benson 1932-7-28 3960 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC38551  Sidalcea hartwegii Vernon Oswald 1983-4-18 345 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  UC726656  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Paradise Grade Clear Creek, Paradise Grade Comment
  UC987698  Sidalcea hartwegii Roxana S. Ferris 1952-5-17 12482 Butte about 2 mi w Paradise (canyon of Butte Creek); , w of Paradisde 457 Comment
  RSA87487  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mile E. of Forbestown. Comment
  SEINET10480013  Sidalcea oregana subsp. spicata Mary Susan Taylor 1977-7-15 Taylor 1411 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  UC1562447  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville); s of the Feather River 30 Comment
  CAS-BOT-BC174847  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC37434  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte E. of Inskip and near Jones Meadow. 1734 Comment
  CHSC61308  Silene bernardina Lowell Ahart 1993-7-29 7113 Butte About 2 miles east of Bald Mountain, about 6 (air) miles north-east of Stirling City. 1524 Comment
  UC203622  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit back Jonesville (on a n slope just below the crest of the ridge); Summit back of Jonesville 2133 Comment
  CAS-BOT-BC389010  Silene laciniata subsp. californica A. A. Heller 1915-5-2 11863 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC42228  Silene laciniata subsp. californica Beth Chambers 1986-4-18 15 Butte N on Cohasset Rd., 13.8 mi from Eaton Rd., Chico. 853 Comment
  SBBG16971  Silene laciniata subsp. californica M. Vincent 1962-4-16 198 Butte Pentz Rd, small reservoir 0.25 mi off rd, 5 mi S of Paradise Comment
  CHSC25355  Silene lemmonii Marc P. Hayes 1977-4-22 11 Butte Along Hwy 70 ca. 3 km nw of Butte-Plumas county line, ca. 22 km nw of Paradise. 485 Comment
  SEINET11931357  Silene lemmonii Unknown 1977-1 14 Butte 3 km SW of Butte-Plumas co. line, 22 km NW of Paradise 490 Comment
  SEINET13095564  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  CHSC104845  Silybum marianum Lowell Ahart 2010-6-12 16807 Butte Open grass land, at the old homestead on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  CHSC38145  Silybum marianum J. D. Jokerst 1983-5-12 1756 Butte Top of North Table Mt. 426 Comment
  CHSC29735  Sisymbrium officinale J. D. Jokerst 1980-4-17 593 Butte Top of North Table Mt. 472 Comment
  JEPS121916  Sisyrinchium bellum Lowell Ahart 2014-7-10 19619 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC478543  Smilacina racemosa E. B. Copeland 1931-6-16 616 Butte Jonesville; at the Summit 2100 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
  CHSC39290  Solanum americanum Lowell Ahart 1983-7-29 4228 Butte In a slide area along the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC92478  Solanum americanum Lowell Ahart 2005-11-20 12492 Butte On the east side of the North Fork of the Feather River, about 50 yards southwest of the Poe Power House. 275 Comment
  JEPS119911  Solanum americanum Lowell Ahart 2012-10-20 18514 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA724846  Solanum americanum L. Ahart 2006-9-28 13377 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
  CHSC101306  Solanum parishii Lowell Ahart 2009-4-22 15595 Butte East side of Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SEINET10546686  Solanum parishii Mary Susan Taylor 1982-5-2 Taylor 4383 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  UCSB63941  Solanum parishii Lorenz, Thomas 1972-4-23 Butte 7.6 mi 8 of highway 99E overpass and 20 ft below high 32 Comment
  UC104231  Solanum umbelliferum Mrs. R. M. Austin May 1896 140 Butte Little Chico Creek Comment
  SEINET10581086  Solanum umbelliferum Lowell Ahart 1987-5-22 Ahart 5674 Butte N of Lumpkin Ridge Road, 1 1/2 mi E of Camp 18, about 8 mi NE of Feather Falls 1280 Comment
  CAS-BOT-BC365378  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CAS-BOT-BC365382  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC43174  Solidago elongata Robert Banchero 1981-7-24 627 Butte Chico Meadows, 0.95 mi n of jct Humboldt Rd and Skyway. 1316 Comment
  JEPS117269  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 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
  CHSC38390  Sonchus oleraceus 1983-5-1 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  CAS-BOT-BC158895  Sorbus scopulina Lowell Ahart 1983-8-16 792 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows 1450 Comment
  CHSC36090  Sorbus scopulina R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4311 Butte NE part of county, E of Inskip and SE of Jones Meadow. At side of stream. 1767 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
  CDA3449  Spergula arvensis subsp. arvensis L. Ahart 2003-6-23 10307 Butte Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. Comment
  CHSC112242  Spergularia bocconi Lowell Ahart 2013-4-20 18563 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
  CAS-BOT-BC390597  Spergularia rubra John Thomas Howell 1962-6-16 37585 Butte 3.5 mi. n. of Pentz 396 Comment
  SEINET10833463  Spergularia rubra Mary Susan Taylor 1982-6-24 Taylor 4739 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
  JEPS110088  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  RSA0036991  Spiraea douglasii Lowell A. Ahart 2013-7-1 18813 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 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
  JEPS110395  Spiranthes stellata Lowell Ahart 2006-8-15 13183 Butte Near the center of a large open meadow with bogs, about 70 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC44929  Stachys ajugoides var. rigida Lowell Ahart 1988-7-31 6153 Butte Around stream rounded boulders, on the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  UC196365  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville 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
  CHSC94616  Stachys pycnantha Lowell Ahart 2006-9-11 13286 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
  JEPS114740  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte West side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  UC128776  Stachys pycnantha Miss Kate Conger 1907-1 Butte Brush Creek. Comment
  CHSC26645  Stachys stricta M. S. Taylor 1977-11-12 1534 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. 243 Comment
  CAS-BOT-BC391085  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CHSC113383  Stellaria longipes subsp. longipes Lowell Ahart 2014-7-4 19555 A Butte On the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  UC478520  Stellaria longipes var. longipes E. B. Copeland 1931-6 638 Butte Joneville Jonesville 1500 Comment
  CHSC42734  Stellaria media Lowell Ahart 1987-5-27 5703 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS122000  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. Comment
  CHSC35038  Stellaria nitens R. Schlising; R. Banchero 1981-5-20 4066 Butte Lumpkin Ridge in E part of county. Comment
  JEPS93969  Stellaria pallida Vernon Oswald 1998-4-6 8899 Butte North Table Mt. on the plateau on the s. side of Beaston Hollow (ca. 1.5 mi. w. of Cherokee Rd.); North Table Mt., Beaston Hollow 323 Comment
  UCD99356  Stellaria pallida Michael A. Vincent; Ethan H. Freid 1998-4-6 8123 Butte Table Mountain. Comment
  HSC103816  Streptanthus L. Ahart 2006-7-11 12939 Butte About 50 yds. S of Humboldt Road, ~1.5 air mi. SW of Butte Meadows 1436 Comment
  UCD115991  Streptanthus diversifolius Michael A. Vincent; Ethan H. Freid 1998-4-6 8112 Butte Table Mountain. Comment
  CHSC102019  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte Northern High Sierra Nevada. 1.6 air mi north of Jarbo Gap; 0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest clearing under powerlilnes, about 1/3 of the way down the steepest part of the slope. 853 Comment
  CHSC33225  Streptanthus longisiliquus R. E. Preston 1981-6-11 83 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  UCD116032  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CHSC62721  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte Ridge south of Serpentine Point and above Hwy 70. 518 Comment
  HSC96718  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte N Sierra Nevada Foothills, W side of Lunt Rd., 1 km SW of Hwy. 70 495 Comment
  SEINET10481895  Streptanthus polygaloides Lincoln Constance 1941-5-28 Constance s.n. Butte Calyx yellow, petals white, brownish veined, crisped. Serpentine outcrop, with ceanothus, arctostaphylos, rhamnus and eriodictyon, pinus sabiniana- cupressus macnabiana- umbelularia assoc. S. Branch of the feather river at magalia, sierra nevada foothills. 488 Comment
  CHSC95073  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  CHSC73827  Styrax officinalis var. redivivus B. Castro; L. Hanson 1996-8-22 719 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with it South Branch, on the extreme W end of Mtn Spring House Ridge. On SW-facing slope of knoll, ca 0.2 mi NW of overlook to Seven Falls. 969 Comment
  CHSC653  Swertia albicaulis var. nitida R. Massey 1931-5-20 Butte Forest Ranch. 548 Comment
  CHSC88057  Swertia albicaulis var. nitida R. D. Fischer 2004-5-30 183 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road, ca. 2 miles down this rd. at a private residence. UTM: 10618179E 4410379N. 751 Comment
  CHSC41881  Symphyotrichum chilense Lowell Ahart 1986-11-9 5433 Butte Along the east edge of the Oroville Quincy Highway, near the Berry Creek School, about 16 miles northeast of Oroville. 518 Comment
  UC600723  Symphyotrichum spathulatum H. F. Copeland 1932-8-19 Butte Jonesville, at the Lily Pond 1700 Comment
  SEINET11688675  Taeniatherum caput-medusae T. B. Devine 1980-1 608 Butte beside Horseshoe Lake in Bidwell Park, Chico Comment
  CHSC46339  Taraxacum officinale Lowell Ahart 1989-5-29 6318 Butte Near the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CHSC40337  Taxus brevifolia Lowell Ahart 1985-7-9 5115 Butte Along the banks of the Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-e of Feather Falls. 914 Comment
  SEINET12218038  Tellima grandiflora M. S. Taylor, Oswald, V. 1985-1 5510 Butte along Four Trees Rd between Hwy 70 & Coyote Gap, ca 25 air mi NE of Oroville Comment
  CAS-BOT-BC392313  Thalictrum fendleri H. F. Copeland 1920-8-29 155 Butte Jonesville 1219 Comment
  CHSC45801  Thalictrum fendleri Kirsten Tarp 1983-8-12 342 Butte At Feather River on Skyway, w of Philbrook Reservoir. By stream. 1524 Comment
  SEINET5576771  Thalictrum fendleri H. S. Gentry, S. Koch 1962-1 19768 Butte Creek along road, Cohasset to Chico. 457 Comment
  CHSC40535  Thlaspi arvense J. D. Jokerst; L. Ahart, M. S. Taylor 1984-4-6 1970 Butte Cherokee area east of Table Mnt., west of Louise Rd., north of Red Tape Lane, Campbell Flat area. Comment
  CAS-BOT-BC88225  Thysanocarpus curvipes John Thomas Howell 1976-4-1 51534 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 304 Comment
  CAS-BOT-BC88230  Thysanocarpus curvipes Dr. E. B. Copeland 1903-4-10 3029 Butte Chico. Comment
  CAS-BOT-BC88231  Thysanocarpus curvipes Copeland 1903-4-10 3031 Butte Chico. Comment
  CHSC33688  Thysanocarpus curvipes L. Ahart 1981-3-29 2711 Butte Along the edge of Ponderosa Way near the Ponderosa Dam, near Forbestown. 250 Comment
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