Search Results — 2000 specimen records retrieved (1582 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC110348  Abutilon theophrasti B. Castro 2006-8-10 1594 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.2 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of dirt road which crosses Cherokee Canal just N of the Biggs canal. 31 Comment
  CHSC97719  Abutilon theophrasti Lowell Ahart 2007-10-31 14516 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  UCD116173  Abutilon theophrasti P. B. Kennedy 1922-1 s.n. Butte Oroville. Comment
  CHSC3266  Acer buergerianum M. L. Hillier 1966-2-4 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  UC203657  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek along the stream canyon of Chico Creek Comment
  CHSC63803  Achillea millefolium S. C. Morey 1983-7-28 634 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD128453  Achillea millefolium J. Travis Rubke 1977-4-25 120 Butte around 13 km east of Chico, north of skyway. 600 Comment
  CHSC33785  Achnatherum lemmonii M. S. Taylor 1981-4-10 3522 Butte Ca. 50 ft up from creek, ca. 1/4 mi n of Pine Cluster Ranch, between Concow Rd and a large oak-covered knoll, ca. 6 mi n of Jarbo Gap on Hwy 70. 731 Comment
  CHSC50441  Achnatherum occidentale subsp. californicum Vernon Oswald; Lowell Ahart 1990-6-27 4323 Butte Small lake located about 1 mile south of Brush Creek. 993 Comment
  UCD51149  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CAS-BOT-BC218048  Achnatherum stillmanii Lowell Ahart 1981-7-7 2934 Butte Along dirt road to the Forbestown Res., 3 miles NE of Forbestown 800 Comment
  CHSC34039  Achnatherum stillmanii L. Ahart 1981-7-7 2934 Butte Along the edge of the dirt road to the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 800 Comment
  CHSC101974  Achyrachaena mollis John P. McKeon 1980-4-22 9 Butte Ca. 30 m S of Jct of Hwy 99 and Cana Hwy 10 m W of Hwy 99, 19 km NW of Chico. 70 Comment
  CHSC33374  Achyrachaena mollis Alisa Goldman 1980-4-23 20 Butte North of Chico. 57 Comment
  CHSC64063  Achyrachaena mollis Michael Deal 1992-4-21 19 Butte Vina-Cana Rd., ca. 0.25 mi n of Pine Creek, ca. 12 mi nnw of Chico. 60 Comment
  SFV3664  Achyrachaena mollis M. L. Vincent 1962-4-15 191 Butte Sierra Nevada Skyway. 4 miles west of Paradise, overlooking Butte Canyon. 215 Comment
  CHSC78250  Acmispon americanus var. americanus Lowell Ahart 2000-6-27 8525 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line,about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CHSC886  Acmispon americanus var. americanus V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  UCD103796  Acmispon americanus var. americanus A. A. Heller 1914-7-24 11625 Butte Forest Ranch. 731 Comment
  CHSC61317  Acmispon nevadensis var. nevadensis Lowell Ahart 1993-7-31 7135 Butte On the west side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  JEPS124393  Acmispon nevadensis var. nevadensis Lowell Ahart 2015-6-16 20229 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC31099  Acmispon parviflorus Diane M. Reilly 1980-4-19 16 Butte Under power lines. Ca. 1/4 mi sw off Big Bend Rd., ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  JEPS122003  Acmispon strigosus Lowell Ahart 2014-5-13 19458 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
  CHSC109000  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of the Bloody Pin Trail, about 1/2 way between Guardian Trail and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 270 Comment
  CHSC45537  Aconitum columbianum var. columbianum Kirsten Tarp 1982-7-12 195 Butte N part of county, e of Butte Creek House. In meadow. 1926 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CHSC52113  Aconogonon phytolaccifolium L. P. Janeway 1988-7-29 3105 Butte Above bank of Butte Cr at Butte Meadows, crossing of Bull Hill Rd (The Skyway). 1325 Comment
  UC444992  Actaea rubra E. B. Copeland June, 1930 Butte woods near Butte Creek Jonesville 1550 Comment
  CHSC39841  Adiantum jordanii Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CHSC78084  Aesculus californica April Glover 1997-4-4 27 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32. 390 Comment
  CHSC38318  Agoseris grandiflora Vernon Oswald 1983-6-13 668 Butte Upper Bidwell Park, Chico, beside the road between Centennial Ave. and the Police Pistol Range. 91 Comment
  CAS-BOT-BC447799  Agrimonia gryposepala Lowell Ahart 1980-7-29 2504 Butte Near Forbestown Road, 228 Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n. of Pulga, ca. 5 air mile of Magalia. 1097 Comment
  SACT000053  Agropyron laeve Herbert Copeland 1935-7-25 Butte Comment
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  CHSC28554  Agrostis exarata M. S. Taylor 1978-7-19 1744 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  CHSC36527  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  UC1260480  Agrostis hendersonii Lowell Ahart with Sue Taylor, Jim Jokerst, et al. 1980-7-20 2473 Butte ne of Oroville (w side of Big Bald Rock); Big Bald Rock 1100 Comment
  UC600601  Agrostis idahoensis E. B. Copeland July, 1929 Butte Jonesville Comment
  SEINET10510279  Agrostis microphylla Lowell Ahart 1988-5-28 Ahart 6007 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville, Butte County. Uncommon. Valley Grassland. 37 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  SEINET10888110  Agrostis pallens Lowell Ahart 2007-5-29 Ahart 13965 Butte T21N, R6E, Section 28. Seep on east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 586 Comment
  UC573809  Agrostis scabra H. S. Yates 1936-8-13 6109 Butte 2.5 mi sse Butte Meadow; Paynes Creek Quad. 1493 Comment
  UC815077  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows 1280 Comment
  UCD53293  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC94427  Agrostis stolonifera Lowell Ahart 2006-8-15 13185 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
  UC1586513  Agrostis thurberiana Vernon H. Oswald and Lowell Ahart 1991-8-19 4836 Butte n side Forest Rd. 25N15 (between Philbrook Reservoir and Coon Hollow) 1767 Comment
  CHSC49494  Agrostis variabilis V. Oswald; L. Ahart 1988-8-16 3692 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC111391  Aira caryophyllea Lowell Ahart 2012-5-2 17978 Butte On the south side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC84027  Alisma lanceolatum Lowell Ahart 2003-6-23 10303 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS127629  Alisma lanceolatum B. Castro 2008-7-15 1760 Butte Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near junction of Cherokee Canal, Southern Pacific RR and the Biggs extension canal. Comment
  CAS-BOT-BC131910  Allium John Thomas Howell 1955-6-14 30437 A Butte At Magalia 731 Comment
  CHSC36909  Allium amplectens S. Azevedo; R. A. Schlising 1980-6-13 3700 Butte NE of Forest Ranch; 2.3 mi e and se of Hwy 32 along Garland Road, near jct with Doe Mill Road and Ponderosa Way. 902 Comment
  CAS-BOT-BC460737  Allium amplectens Lowell Ahart 1980-6-19 2384 Butte Along Swedes Flat Road, near Bangor. Comment
  SEINET3153878  Allium attenuifolium K. Conger 1907-1 sn Butte Brush Creek Comment
  SEINET194962  Allium cratericola A. A. Heller 1938-4-3 15012 Butte Table Mountain, north of Oroville. Comment
  CHSC115468  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  JEPS49152  Allium hyalinum Robert Ornduff 1967-4-15 6942 Butte s Table Mountain (field at junction of Cherokee road and Chico-Oroville road) 82 Comment
  CHSC111024  Allium jepsonii Susan Bazell; Robert Schlising 2009-7-7 69 Butte Serpentine outcrop downslope and E of Hollywood Road, just outside boundary of Lassen National Forest. 731 Comment
  JEPS110416  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CHSC46524  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Near the edge of Ponderosa Way, about 2 miles south of Ponderosa Dam, north-west of Forbestown. 548 Comment
  CAS-BOT-BC132068  Allium peninsulare var. peninsulare Peter H. Raven 1953-5-9 5424 Butte 8 mi. from Bangor on Oroville Road Comment
  CAS-BOT-BC132070  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. SE. of Oroville on road to Wyandotte 121 Comment
  CAS-BOT-BC474066  Allium platycaule A. A. Heller 1915-6-16 12024 Butte Summit of Sierra Nevada above Jonesville 2133 Comment
  CHSC107294  Allium sanbornii var. sanbornii L. P. Janeway; Chris Cristofferson 2011-8-3 10627 Butte Northern High Sierra Nevada. Plumas National Forest; top edge of large northwest-facing granite outcrop near ridge top, overlooking Martin Creek; 1.6 air km northeast of Madrone Lake. 774 Comment
  CAS-BOT-BC476714  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 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
  CHSC84168  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  SEINET2444419  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte Below the high water line of Lake Oroville, N of Springtown Road, Lake Oroville. Foothill Woodland (destroyed). 244 Comment
  CHSC46805  Allophyllum integrifolium R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4652 Butte N part of county, on Snow Mountain ridge. Around seep. 1889 Comment
  CAS-BOT-BC171270  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  UC436297  Alopecurus aequalis E. B. Copeland August, 1930 Butte above Jonesville Jonesville 1650 Comment
  CHSC54374  Alopecurus saccatus M. Bailey 1991-3-29 555 Butte Butte College campus. Ca 200 feet s of Wallis Pond e of Williams Road and ca 1/4 mi n of Pentz Road. 85 Comment
  JEPS104098  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS117218  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  SEINET7903210  Amaranthus albus R. R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC51346  Amaranthus californicus Vernon Oswald 1990-9-27 4454 Butte Paradise Lake, ca. 3 mi north of Magalia. 772 Comment
  UC1586501  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte about 0.5 mi se intersection of Pennington Road and Rutherford Road (se of Gridley); Gray Lodge Waterfowl Mangement Area 21 Comment
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  JEPS113491  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  JEPS120724  Amaranthus palmeri Lowell Ahart 2013-10-12 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about 1 mile east of Biggs Comment
  SEINET11268217  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte Along the north side of Durham Pentz Road, about 1/10 mi west of Butte Creek, about 1/10 mile east of Durham.; 0 49 Comment
  CHSC37116  Ambrosia psilostachya L. Ahart; M. S. Taylor 1982-10-11 3859 Butte Ca. /1 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi SW of Gridley. 35 Comment
  CHSC42114  Ammannia robusta Lowell Ahart 1986-11-14 5476 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
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  CHSC3544  Amsinckia intermedia John Francis 1966-3-14 60 Butte 1/4 mile E. of intersection of Esplanade and Cohasset Rd. on Cohasset Rd., Chico. Comment
  RSA34082  Amsinckia intermedia A. A. Heller 1941-3-16 15889 Butte Edge of a field along the road a half mile west of Pentz. Comment
  SEINET10497092  Amsinckia intermedia Mary Susan Taylor 1974-3-5 Taylor 75 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  SEINET10497093  Amsinckia intermedia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5227 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  SEINET12326971  Amsinckia intermedia J. S. Adams 1980-1 5 Butte Horseshoe Lake, opposite Golf Course, Upper Bidwell Park, Chico 98 Comment
  RSA0090927  Amsinckia intermedia var. eastwoodiae C. C. Bruce 1897-05 1926 Butte [No locality information provided] Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC726542  Amsinckia lycopsoides A. A. Heller 1942-4-5 16417 Butte 8 mi n Chico (1/2 mi e of junction of Cohasset road with U.S. 99E) Comment
  RSA416592  Anaphalis margaritacea Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  CAS-BOT-BC137804  Andropogon virginicus var. virginicus W. S. Ball 1939-2-16 s.n. Butte Wyindott Irrigation District, ditch east of Oroville about 5 miles. Comment
  CHSC38785  Andropogon virginicus var. virginicus Vernon Oswald 1983-9-25 1047 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  CAS-BOT-BC391993  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte 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
  CHSC6060  Anisocarpus madioides E. Parreno 1968-5-13 107 Butte Roadside of Upper Bidwell Rd. ca. 25 m from Devil's Kitchen. Comment
  POM147728  Antennaria argentea E. E. Stanford 1927-5-21 381 Butte 4 miles SE of Avery 1220 Comment
  CHSC43179  Antennaria rosea subsp. confinis Robert Banchero 1981-6-28 538 Butte White Table Mountain summit. 1877 Comment
  CHSC42471  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
  CAS-BOT-BC84694  Anthemis cotula A. A. Heller 1923-8-13 13830 Butte Chico Comment
  CHSC52330  Anthriscus caucalis Pauleen Broyles 1987-5-21 1046 Butte The Nature Conservancy Vina Plains Preserve. On a knoll above the confluence of Singer and Pine Creeks. Comment
  CHSC39014  Antirrhinum vexillo-calyculatum subsp. intermedium J. D. Jokerst 1983-6-21 1816 Butte Top of North Table Mt at its west edge, top of escarpment edge at the morth edge of Coal Cr Canyon. 304 Comment
  HSC92438  Antirrhinum vexillocalyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte 0.5 mi. W of the Forbestown Reservoir, along edge of dirt road, NE of Forbestown 701 Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  UC859110  Aphanes occidentalis A. A. Heller 1916-4-13 12324 Butte e of Chico (Stilson canyon) Comment
  CHSC71629  Apocynum androsaemifolium Vernon H. Oswald; Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Rd. 1.3 mi west of Four Trees. 1524 Comment
  JEPS113176  Apocynum androsaemifolium Lowell Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at 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
  CHSC58257  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte Below the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  SEINET10907251  Arabis breweri Mary Susan Taylor 1975-4-29 Taylor 542 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC100970  Arbutus menziesii Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15489 Butte East side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC3022  Arbutus unedo Carl Pejsa 1958-4-19 14 Butte Bidwell Park Forestry Station. Comment
  CHSC45300  Arceuthobium abietinum Vernon Oswald 1987-6-14 2999 Butte Near Humboldt Rd. at the w boundary of Lassen National Forest between Butte Meadows and Cherry Hill. 1389 Comment
  CHSC45301  Arceuthobium abietinum Vernon Oswald; Lowell Ahart 1987-7-1 3070 Butte Logging road ca. 2.5 mi (air) s of Humbug Summit and 0.25 mi w of the Butte-Plumas county line, ca. 5.25 mi se of Jonesville. 1999 Comment
  UCSC000190  Arceuthobium campylopodum H. F. Copeland 1928-8-29 s.n. Butte the summit of Humboldt Road - neighborhood of Jonesville 2134 Comment
  CAS-BOT-BC409928  Arceuthobium campylopodum V. Oswald; Lowell Ahart 1988-7-29 3633 Butte along the road connecting Humboldt and Humbug Roads at a point 0.9 miles W of Humbud Road, ca. 3 miles E of Jonesville 1804 Comment
  UCD52162  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51103 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52255  Arctostaphylos manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51542 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  CAS-BOT-BC24409  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51567 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CHSC21775  Arctostaphylos manzanita subsp. manzanita Robert A. Schlising 1974-9-17 3157 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  SEINET11989068  Arctostaphylos manzanita subsp. roofii R. Gankin, Powell, R. 1966-1 869 Butte Cohasset Ridge NE of Chico 549 Comment
  SD60288  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte Near Forest Ranch Comment
  CAS-BOT-BC38560  Arctostaphylos mewukka subsp. truei Wayne Roderick 1981-7-19 s.n. Butte 3 mi. NE of Magalia. Comment
  CAS-BOT-BC38609  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte On the Neal road west of Optimo Lodge, between Paradise and Magalia. Comment
  CAS-BOT-BC45574  Arctostaphylos nevadensis C. Hart Merriam 1925-8-22 s.n. Butte Summit, Chico - Chester Rd., 10.5 mi. n. of Butts Meadows. Comment
  CHSC90965  Arctostaphylos nevadensis L. P. Janeway; Matt Brown, Samantha Mackey Hillaire 2005-5-11 8387 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope overlooking Lockerman Creek, 0.5 km east of Lockerman Creek and 2.3 km north-northeast of its confluence at Camp Creek. 1250 Comment
  UCD51949  Arctostaphylos truei John Thomas Howell 1975-6-15 51092 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  CAS-BOT-BC47386  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51095 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC106887  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 47 Comment
  CHSC21776  Arctostaphylos viscida subsp. viscida Robert A. Schlising 1974-9-17 3158 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  CHSC32651  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3430 a Butte Ridge NNW of Sawmill Peak, off Jordan Hill Rd, ca. 1 air mi NE of Magalia. 701 Comment
  CHSC35046  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-20 4101 Butte NE part of county, E of Stirling City and E of Jones Meadow. 1767 Comment
  CHSC78552  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC117314  Aristida oligantha L. P. Janeway 2016-8-9 12148 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC27218  Aristolochia californica P. Moyer 1972-3-11 121 Butte Chico Creek, at foot of n entrance to Cafe Bridge, CSUC Campus. 60 Comment
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC78059  Aristolochia californica Caleb E. Casey 1999-2-4 Butte Upper Bidwell Park, bluffs on south side over Bear Hole. 365 Comment
  UC143064  Aristolochia californica Dr. E. B. Copeland 1903-4-10 3044 Butte Chico Comment
  SEINET12090193  Aristolochia californica R. J. Goedl 1979-1 3 Butte 6 mi N of Oroville, 60 yds W of Cherokee Mountain Road 366 Comment
  RSA699514  Arrhenatherum elatius Paul Maslin 2004-5-21 34 Butte West of Hwy. 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve. 488 Comment
  CAS-BOT-BC90284  Artemisia douglasiana Lowell Ahart 1987-7-3 5760 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 890 Comment
  JEPS110512  Artemisia douglasiana Lowell Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC43269  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10475948  Asarum hartwegii Mary Susan Taylor 1980-9-12 Taylor 3334 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  UC116650  Asarum lemmonii Mrs. R. M. Austin June 1896 153 Butte Lomo Comment
  SEINET10580344  Asclepias cordifolia R. M. Austin Austin 287 Butte Little Chico Creek Comment
  CHSC124  Asclepias speciosa M. Anthony 1954-5-30 Butte Concow, Rag Dump 5. 609 Comment
  UC474224  Aspidotis californica H. F. Copeland March, 1926 Butte near Chico (Iron Canyon) Comment
  UCD111116  Aspidotis densa Christopher Mallek 2008-1 HW3- 23 Butte Magalia. 756 Comment
  HSC66087  Aspidotis densa M. S. Taylor 1980-3-8 2373 Butte 100 ft. SW of Pulga bridge over Hwy. 70 28 mi. NE of Oroville 488 Comment
  CAS-BOT-BC99219  Aster M. S. Taylor 1977-11-12 1537 Butte By Big Chico Creek, at end of Upper Bidwell Park, ca. 10 mi e of Chico 304 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
  SEINET10474429  Aster chilensis var. medius Lowell Ahart 1985-10-8 Ahart 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10904920  Aster oregonensis subsp. californicus Mary Susan Taylor 1977-8-17 Taylor 1502 Butte On E side of the Skyway, at Inskip. 1615 Comment
  CHSC46364  Astragalus gambelianus Lowell Ahart 1989-5-10 6227 Butte Growing at the end of the dirt road that lead to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  CHSC34611  Astragalus pauperculus David B. Carlson 1980-3-30 18 Butte Ca. 21 km nw of Chico, s side of Ponderosa Way, ca. 610 m se of Mud creek, 1.8 km due w of Big Chico creek, near the top of Big Chico creek canyon, w side. 750 Comment
  CHSC59315  Astragalus pauperculus J. L. Guardino 1992-3-23 1 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  CHSC69041  Asyneuma prenanthoides Lowell Ahart 1997-8-1 7793 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
  SEINET10532290  Athyrium filix-femina var. californicum Mary Susan Taylor 1981-4-28 Taylor 3569 B Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CAS-BOT-BC17447  Athysanus pusillus A. A. Heller 1915-2-26 11765 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC34550  Athysanus pusillus M. Jeanne Boze 1978-3-1 2 Butte Ca. 3 mi e of Chico Humboldt Rd. 1 mi n of Bruce Rd. Intersection. 106 Comment
  CHSC43812  Athysanus pusillus Lowell Ahart 1978-4-19 1649 Butte Along the trail to Feather Falls, about 3 miles north of the town of Feather Falls. 548 Comment
  CHSC50024  Athysanus pusillus Lowell Ahart 1990-3-9 6414 Butte Banks on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC58258  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte At the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC36556  Atriplex argentea var. mohavensis L. Ahart 1982-7-10 3662 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC37115  Atriplex argentea var. mohavensis L. Ahart; M. S. Taylor 1982-10-11 3862 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  UCD97655  Atriplex rosea L. Ahart 1982-7-10 3662 Butte in parking area around check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CHSC34125  Atriplex serenana L. Ahart 1981-9-10 3145 Butte Near the entrance to the Graylodge Waterfowl Mgmt HQ, w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  SEINET516427  Atriplex serenana Lowell Ahart 1981-1 3218 Butte Small part of a plant about 2 1/2 ft. tall, growing on good soil, near the entrance to the Gray Lodge Waterfowl Management Area, just W of Pennington Rd., about 12 mi SW of Gridley. 30 Comment
  JEPS120069  Aucuba japonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC46433  Avena fatua Lowell Ahart 1989-5-23 6234 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS115039  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  CHSC45640  Baccharis pilularis subsp. pilularis Vernon H. Oswald 1982-11-20 17 Butte Sewage Treatment Plant on Chico River Rd. ca 4.5 mi W of Chico. 41 Comment
  CHSC42470  Baccharis salicifolia Lowell Ahart 1987-5-6 5498 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  UCD19369  Bacopa rotundifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 860 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  SEINET10838816  Bassia hyssopifolia Lowell Ahart 1983-9-19 Ahart 4453 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC3610  Bellis perennis R. Jaegel 1966-2-15 9 Butte Collected on the front lawn of Chico State College Library; Chico. Comment
  CHSC23662  Berberis aquifolium var. dictyota M. S. Taylor 1976-4-27 1093 Butte On n side of Ponderosa Way, ca. 2 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC31682  Bergia texana L. Ahart 1974-7-19 553 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38433  Bergia texana Vernon Oswald 1983-7-8 837 Butte Upper Bidwell Park, Chico, near Upper Park Rd. in the depression draining Horseshoe Lake. 97 Comment
  CHSC47653  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CAS-BOT-BC102069  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte Near Ponderosa Dam Lake Oroville 274 Comment
  CHSC94060  Bistorta bistortoides R. D. Fischer 2004-6-20 783 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 growing on the moist soil of the eastern side of Chico Meadows. 1371 Comment
  CHSC31952  Boechera breweri J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1045 Butte Top of Humboldt Peak, ca. 400 meters NE of summit along hogback ridge. 2133 Comment
  SEINET10453130  Boisduvalia densiflora Mary Susan Taylor 1980-8-30 Taylor 3320 Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  CHSC46318  Bolboschoenus fluviatilis Vernon Oswald 1989-5-15 3767 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In a marshy depression near Butte Creek. 18 Comment
  CAS-BOT-BC31373  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte Gray Lodge Game Refuge, NW of Pennington. Comment
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  JEPS106108  Botrychium simplex Lowell Ahart 2004-7-23 11288 Butte About 15 feet west of the small stream, 47-55 feet north of the large round 10 feet tall boulder, northeast of Memorial Spring, east side of Humbug Road, about 2 miles (air) wet of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows 1554 Comment
  UC1127178  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad., se Butte Mdws Comment
  JEPS87438  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte about 6 (air) mi ne Feather Falls (on a steep bank along Fall River, about 200 yards w of the bridge across Fall River); along Fall River, ne of Feather Falls 1036 Comment
  CDA1767  Brachypodium distachyon T. C. Fuller 1959-7-6 s.n. Butte Hwy 40A at bridge over the West Branch, Feather River. 0 Comment
  CHSC110136  Brachypodium distachyon L. P. Janeway 2012-4-29 10808 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.4 km west of the powerlines. 136 Comment
  CHSC115472  Brachypodium distachyon L. P. Janeway; Emily Meigs Doe 2015-4-13 11664 Butte Northern High Sierra Nevada. Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road-km northeast of Flea Valley Creek and Pulga. 526 Comment
  UC1025797  Brachypodium distachyon L. T. Burcham 1954-8-19 303 Butte approximately 6 mi n of Oroville 396 Comment
  CHSC1082  Brasenia schreberi R. Morford 1931-4-28 Butte Dodge Lands. 30 Comment
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  CAS-BOT-BC30309  Brassica nigra Lowell Ahart 1982-5-29 3449 Butte North of the Peter Ahart Ranch, about 2.5 miles north and 1.25 miles east of Honcut. 50 Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  CHSC26642  Brickellia californica M. S. Taylor 1977-11-12 1542 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC103986  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  HSC102688  Briza maxima J. P. Smith 2013-5-5 13702 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CAS-BOT-BC145538  Briza minor Lowell Ahart 1980-5-4 2217 Butte Near Hurleton. 600 Comment
  CHSC92546  Briza minor L. P. Janeway 2005-3-10 8346 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  UCD57391  Briza minor Joseph M. DiTomaso 1976-5-23 469 Butte Lake Oroville. Peninsula at south end. Comment
  SEINET11672243  Briza minor Unknown 1978-1 10 Butte ca 12 mi N of Chico on CA 99 at Broyles Rd 67 Comment
  SEINET194960  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte In fields near the Chico airport. Comment
  SEINET10533776  Brodiaea coronaria A. Arthur Heller, H. E. Brown 1902-5-8 Heller s.n. 1902 Butte Berry Canyon (Near Clear Creek) Comment
  UC725395  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte in fields and on roadside near Chico Airport Comment
  CAS-BOT-BC482197  Brodiaea elegans subsp. elegans Lowell Ahart 1983-6-26 4146 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 550 Comment
  HSC38057  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1976-5-10 2464 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC78759  Brodiaea minor L. P. Janeway 2000-5-14 6721 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  CAS-BOT-BC484558  Brodiaea minor John Thomas Howell 1967-6-22 42607 Butte Magalia 701 Comment
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  UC725523  Brodiaea nana A. A. Heller 1927-5-3 14364 Butte ten mi n Chico Comment
  SEINET8194052  Brodiaea purdyi A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon, near Clear Creek. Comment
  JEPS26741  Brodiaea sierrae P. C. Hutchison 1961-6-9 2091 Butte on Hwy US Alt. 40 7 mi s Jarbos Gap; canyon of the north fork of the Feather River canyon Comment
  UCD78203  Brodiaea sierrae Robert E. Preston 2004-6-19 2260 Butte 1 mi NNE of Magalia, 250 ft S of Jordan Hill Rd where it crosses North Fork of the West Branch of the Feather River 486 Comment
  SEINET3921419  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville.; 0 37 Comment
  CHSC112437  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the east side of Black Bart Road, about 3/4 miles (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  UCD59169  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CDA31935  Bromus catharticus L. Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC84277  Bromus commutatus Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  UCD58519  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  CHSC2132  Bromus hordeaceus H. Silberman; D. Isaac 1949-5-9 Butte W side of football field, CSC campus. Comment
  CHSC35661  Bromus hordeaceus R. E. Preston 1982-4-22 249 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC109548  Bromus laevipes L. P. Janeway 2012-6-7 10871 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
  UC1609056  Bromus laevipes Lowell Ahart 1993-4-16 6967 Butte about 3 1/2 air mi sw of Forbestown (sw of intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10507836  Bromus laevipes Lowell Ahart 1985-5-15 Ahart 4987 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC35671  Bromus madritensis subsp. madritensis R. E. Preston 1982-4-25 264 Butte Slope at lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC61533  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte On the east side of the dirt road, about 1 mile west of Lost Creek Reservoir. 1188 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC49519  Bromus polyanthus Vernon Oswald 1988-6-2 3351 Butte Humboldt Rd. 0.7 mi ne of Lomo. Along this section of road. 1249 Comment
  CAS-BOT-BC161961  Bromus rubens Lowell Ahart 1962-4-20 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC31706  Bromus sterilis L. Ahart 1978-5-16 1733 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  CHSC118552  Callitriche fassettii Lowell Ahart; Emily Meigs Doe 2017-4-1 21388 Butte About 5 yards south of fence, east of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. 343 Comment
  JEPS128725  Callitriche fassettii Lowell Ahart, Emily Meigs Doe 2017-4-1 21388 Butte East of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CHSC103717  Callitriche heterophylla var. bolanderi Lowell Ahart 2010-5-14 16650 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC42727  Callitriche heterophylla var. bolanderi Lowell Ahart 1987-5-27 5693 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10531072  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Skyway in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  HSC23375  Calochortus albus R. N. Bowman 1971-4-18 2 Butte W side of Cherokee Rd., 7.3 mi. S of Hwy. 70 183 Comment
  HSC66270  Calochortus albus M. S. Taylor, Jim Jokerst 1980-4-27 2567 Butte S side of Humbug Rd., 0.5 mi. upstream from Honey Run Covered Bridge, 7 mi. E of Chico 137 Comment
  HSC31876  Calochortus amabilis Steven Lagos 1974-4-20 16 Butte 2 mi. S of Cherokee Comment
  CHSC2231  Calochortus coeruleus R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  UC398903  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte above Jonesville 2000 Comment
  CHSC24840  Calochortus luteus J. T. Moore 1976-4-28 18 Butte 5 m n of Skyway road to Paradise, 8 km e of Hwy 99. 210 Comment
  CAS-BOT-BC492562  Calochortus minimus C. C. (Mrs.) Bruce 1897-6-1 s.n. Butte Dye place Comment
  CHSC11053  Calochortus monophyllus Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC90028  Calochortus monophyllus Peggy Fain 1991-4-21 22 Butte Ca. 3 km. E. of Richardson Springs Hotel (N. side Walker Creek, Musty Buck Preserve). 243 Comment
  CHSC12120  Calochortus tolmiei M. F. Smith 1972-4-15 9 Butte On Big Bend Road, 2 1/2 miles south of intersection with highway 70. 457 Comment
  HSC38032  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2483 Butte Just E of Magalia Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  SEINET12048539  Calochortus tolmiei Unknown 1984-1 9 Butte ca 1.8 mi S of Concow Reservoir & 0.2 mi S of Jordan Hill Rd, along W side of Concow Rd 457 Comment
  POM196062  Caltha howellii H. F. Copeland 1929-6-11 1239 Butte Jonesville. 1524 Comment
  RSA4438  Caltha howellii E. B. Copeland 1930-06 639 Butte Jonesville. 1500 Comment
  RSA789311  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca 10 mi NW of Chico and ca. 1/2 mile S of Broyles Rd fairly extensive pop. 61 Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  CHSC34157  Calycadenia multiglandulosa Lowell Ahart 1981-8-31 3052 Butte S of the jct of Black Bart Rd and Oroville-Forbestown Rd, ca. 10 mi W of Forbestown. 750 Comment
  UC1971669  Calycadenia multiglandulosa 1977-7-6 2036 Butte 2.1 mi SE of the Quincy-Oroville/Olive Hwy (162), on Forbestown Road (at milepost 59.35, C. oppositifolia (RLC2037) ca. 200 yds E 427 Comment
  CAS-BOT-BC106084  Calycadenia oppositifolia John Thomas Howell 1955-6-15 30509 Butte West Branch of North Fork of Feather River 182 Comment
  RSA107429  Calycadenia oppositifolia L. S. Rose 1955-6-15 s.n. Butte 3 miles E of Pentz, Canyon of W Branch of N Fork of Feather River 183 Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  UC1971679  Calycadenia oppositifolia 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Road jct, ca. 200 yds N on small dirt powerline road (very near to GDC 553, 558) 653 Comment
  CHSC110254  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC26701  Calycadenia truncata M. S. Taylor; M. Hayes 1977-8-16 1453 Butte On N side of Clear Creek next to the newly built bridge (population partially destroyed by the construction), Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CHSC28808  Calycadenia truncata J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 410 Butte Top of Table Mt 100 m north of Cherokee Rd. 396 Comment
  CAS-BOT-BC275381  Calycadenia truncata var. truncata A. A. Heller 1938-6-14 15152 Butte On Highway 24, 23 miles E of Oroville Comment
  CHSC113514  Calyptridium monospermum Lowell Ahart 2014-7-7 19604 Butte In a large disturbed area in the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC95085  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. 1128 Comment
  HSC103797  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road, 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC37089  Calystegia malacophylla L. Ahart 1982-9-29 3832 Butte At N end of Lost Creek Reservoir Dam, ca. 2 mi NW of Strawberry Valley. 1100 Comment
  CHSC46785  Calystegia occidentalis M. S. Taylor 1982-6-24 4735 Butte At end of spur rd along Flea Mt Ridge, ca. 1.5 mi of Flea Mt., ca. 9 mi ne of Jarbo Gap on Hwy 70. 1066 Comment
  JEPS108793  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  RSA718780  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  CAS-BOT-BC496963  Camassia leichtlinii subsp. suksdorfii A. A. Heller 1915-6-11 11959 Butte Butte Meadows in Sierra Nevada, in the yellow pine belt 1219 Comment
  CAS-BOT-BC496965  Camassia leichtlinii subsp. suksdorfii Lowell Ahart 1982-6-1 3528 Butte A little south of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  RSA69294  Camassia leichtlinii subsp. suksdorfii Frank W. Peirson 1926-6-21 6768 Butte Butte Meadow, Humboldt Road. Comment
  CHSC25012  Camassia quamash subsp. quamash E. B. Copeland 1930-6-27 408 Butte Jonesville. 1550 Comment
  CHSC51082  Camassia quamash subsp. quamash Pauleen Broyles 1987-7-19 1079 Butte Ca. 7.2 km (air) NE of Inskip. 526 Comment
  UC177596  Campanula prenanthoides H. M. Hall July 1914 9797 Butte Butte Meadows 1310 Comment
  SEINET10462919  Campanula prenanthoides Edwin B. Copel 1924-8-2 Copeland 599 Butte JONESVILLE, DRY WOODS 1524 Comment
  JEPS103602  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  CHSC88857  Cardamine oligosperma Christine Hantelman 2000-2-18 5 Butte Along Meridian road 1/4 mile north of Hwy 99 turnoff. In ditch on north side of road. 57 Comment
  CHSC63957  Cardamine pachystigma B. Castro; L. Janeway 1994-4-21 509 Butte On Watson Ridge, on S-trending ridge S of USFS Rd 21N25A. 1054 Comment
  CHSC86575  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7769 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  CHSC86576  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7770 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.3 km northeast of Bloomer Hill. 293 Comment
  CHSC106602  Carduus pycnocephalus subsp. pycnocephalus L. P. Janeway 2011-4-13 10232 Butte Sacramento Valley. Oroville; just east of Centennial Park, along the north edge of the road along the top of the levee on the south side of Feather River. 50 Comment
  JEPS118073  Carex Lowell Ahart 2011-8-19 17635 Butte On the south side of a good forest road, on the east side of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1252 Comment
  JEPS120144  Carex Lowell Ahart 2012-6-14 18190 Butte On the south side of path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC52284  Carex abrupta L. P. Janeway 1987-6-26 2312 Butte Above Camp Cr, 2.5 mi E of Granite Ridge along road to Lynch and Logue Meadows. 1365 Comment
  CHSC55427  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2932 Butte Meadow between two lakes of southeastern-most headwaters of Butte Cr. 1935 Comment
  SEINET10585935  Carex abrupta Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3020 Butte The Carices of Butte county. T26N, R5E, Jonesville quad (15") NW1/4 of sec 21. Along Willow Cr, 1 mile W of Humbug Rd. On dry disturbed forest floor (Jeffery pine and white fir). With C. integra, C. fracta, C, jepsonii. 1798 Comment
  CDA13290  Carex amplifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13138 Butte Plumas National Forest; Dense colony on shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC50349  Carex amplifolia Vernon Oswald 1990-5-14 4210 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC94292  Carex angustata Lowell Ahart 2006-7-16 12974 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS106373  Carex angustata Lowell Ahart 2004-7-23 11310 Butte In a small bog, on the south side of the dirt road, about 200 yards east of the large bog, about 3/8 mile (air) east of Bald Mountain Lookout, about 4 1/4 miles (air) northeast of Stirling City 1702 Comment
  JEPS110197  Carex angustata Lowell Ahart 2006-7-16 12974 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET7549689 Image available Carex angustata L. P. Janeway 2003-7-13 7899 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Butte Meadows 7.5' quad. 1519 Comment
  SEINET7549691 Image available Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  CHSC113504  Carex aurea Lowell Ahart 2014-7-16 19677 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC53708  Carex barbarae L. P. Janeway 1988-5-29 2703 Butte Low in canyon of Little Chico Cr, ca 2 air mi S of Ten Mile House. 243 Comment
  CHSC44933  Carex bolanderi Lowell Ahart 1988-7-31 6146 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
  CHSC45076  Carex bolanderi Vernon Oswald 1985-6-2 1797 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 2000 ft w of the turn-around at the e end of Upper Park Road. 204 Comment
  CHSC99375  Carex bolanderi Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10522 Butte Ca. 2.5 mi NE of village of Butte Meadows, along E side of Butte Creek, downslope from (W of) Humboldt Road. 1396 Comment
  UC1609336  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek); Bolt Creek 1325 Comment
  UCD140164  Carex bolanderi L. P. Janeway; B. Castro, Pat Kelly 1987-5-10 2032 Butte Butte Creek Trail, above Butte Creek ca. 1 mile south of the Doe Mill Road bridge. 609 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  UCR246351  Carex cyrtostachya Peter F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Northern Sierra Nevada Highlands (n SNH), Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage 1075 Comment
  SD257095  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 air miles northeast of Feather Falls. 1219 Comment
  CHSC43950  Carex densa Vernon Oswald 1988-5-19 3322 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  CHSC84272  Carex densa Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10220 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue Chico. 121 Comment
  JEPS94667  Carex densa Lowell Ahart 1998-6-9 7989 Butte about 7 air mi n Oroville (in large seep, sw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
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  CAS-BOT-BC34954  Carex densa L. P. Janeway 1987-5-7 2022 Butte NE side of Hwy 149 0.5 mile NW of Hwy 70. 74 Comment
  UC1594535  Carex echinata subsp. echinata Lowell Ahart 1992-7-26 6856 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain) 1798 Comment
  CAS-BOT-BC19850  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2989 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  CHSC28866  Carex feta J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 431 Butte Along edges of first drainage northwest of jct east edge of Table Mt and Cherokee Rd. Comment
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET10889103  Carex feta A. Arthur Heller 1913-6-4 Heller 10781 Butte Table Mountain Oliver Ranch north of Oroville. Comment
  SEINET10927770  Carex gracilior Lowell Ahart 2007-4-16 Ahart 13675 Butte T17N, R4E, northeast 1/4 Section 11. On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, abouth 12 miles southeast of Oroville. 52 Comment
  CAS-BOT-BC28376  Carex gracilior A. A. Heller 1929-5-1 14853 Butte Osage Avenue, Chico-Hamilton City road. Comment
  CAS-BOT-BC20459  Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road. 750 Comment
  CHSC45257  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3083 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CHSC47057  Carex hirtissima L. P. Janeway 1989-5-17 3243 Butte Along edge of Lower Forbestown Rd (a dirt road) 0.1 mi N of Forbestown Rd. 798 Comment
  CHSC74133  Carex hirtissima B. Castro 1998-6-18 794 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. 929 Comment
  JEPS105636  Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  CHSC44660  Carex hoodii L. P. Janeway 1988-6-25 2891 Butte Near Bull Hill Rd 1.5 mi from The Skyway. 1493 Comment
  CAS-BOT-BC7558  Carex integra H. F. Copeland 1946-7-4 s.n. Butte Jonesville. Comment
  CHSC101996  Carex inversa L. P. Janeway 2009-9-22 9954 Butte Sacramento Valley. Oroville: west side of Third Avenue between Montgomery Street and Safford Street. In narrow parkway strip between sidewalk and street. 49 Comment
  POM183141  Carex jonesii H. F. Copeland 1929-6-10 1245 Butte Jonesville. 1524 Comment
  CHSC43874  Carex laeviculmis L. P. Janeway 1987-6-8 2158 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of the road to Coyote Gap. 640 Comment
  CHSC112102  Carex leavenworthii Lowell Ahart 2012-6-14 18190 Butte On the south side of the path, southwest of CARD Community Center,Lower Bidwell Park, Chico. 62 Comment
  JEPS109228  Carex limosa D. W. Taylor 2004-7-21 19202 Butte Coon Hollow, pond north of Forest road 26N15 (High Lakes Road) 1.8 miles E of junction of Forest Service 25N05. Comment
  CHSC52358  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-22 3053 Butte Coon Hollow side of the saddle between Coon Hollow and Chips Creek. 1920 Comment
  SEINET7568447 Image available Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Kimshew Point 7.5' quad. Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CHSC52259  Carex nebrascensis L. P. Janeway; R. A. Schlising 1988-7-16 3038 Butte Vernal pool next to Humbug Road ca 0.8 mi W of Butte Creek House. 1805 Comment
  CHSC88941  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8244 Butte High Cascade Range. Meadow along southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  UCD140541  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3056 Butte Coon Hollow Creek. 1920 Comment
  CHSC30507  Carex nudata J. D. Jokerst 1980-3-15 477 Butte Jct of Clear Cr and Clear Creek Cemetary Rd. 121 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  CHSC49386  Carex pachystachya L. P. Janeway 1988-6-14 2769 Butte Along W Branch Butte Cr at crossing of road to Ewalt Camp, 1.9 mi W from Hwy 32. 922 Comment
  CHSC47139  Carex retroflexa var. texensis L. P. Janeway; Mary Halterman 1988-5-8 2660 Butte City of Chico; next to house on Broadway between 19th and 20th Streets. 59 Comment
  CAS-BOT-BC117986  Carex rossii John Thomas Howell 1962-6-16 37537 Butte Magalia 731 Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC106159  Carex subfusca Peter F. Zika 2009-6-17 24508 Butte Cascade Range Highlands (CaRH), SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC106161  Carex subfusca Peter F. Zika 2009-6-17 24515 Butte Cascade Range Highlands (CaRH), below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC83287  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7616 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  SEINET7486528 Image available Carex subfusca Peter F. Zika 2009-6-17 24515 Butte below Concow Road 10 road miles above (N of) Route 70 1100 Comment
  SEINET10946213  Carex subfusca Mary Susan Taylor 1978-7-21 Taylor 1812 Butte On S side of Oroville-Quincy Hwy, ca. 14 mi N of Lake Madrone, ca 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  SEINET5242710 Image available Carex subfusca Unknown 1915-6-25 12018 Butte Chico Meadows in the Sierra Nevada Comment
  NY11376  Carex teneriformis H. M. Hall 1914-7-25 9781 Butte Jonesville, Northern Butte Co. 1554.5 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  JEPS120093  Carex texensis Lowell Ahart 2012-6-14 18182 Butte At the entrance to Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  CHSC45066  Carex utriculata Vernon Oswald 1987-5-21 2918 Butte Humbug Rd. between the Skyway and the road to Philbrook Reservoir, near Memorial Spring just ne of Chaparral Guard Station. 1554 Comment
  CHSC66453  Carex vulpinoidea Vernon H. Oswald; Lowell Ahart 1996-6-10 7754 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A canal at the NE corner of Tract 7.2, Sanctuary I. Common along all this canal, its laterals, and the edges of Tract 6, a permanent pool in Sanctuary I. 33 Comment
  RSA718801  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills: West side of Morris Ravine arm of Thermalito Diversion Pool (Feather River), 2.0 km north northeast of Thermalito Diversion Dam. 68 Comment
  SEINET10946139  Carex vulpinoidea Vernon H. Oswald, Lowell Ahart 1990-5-26 Oswald 4254 Butte T18N R3E ne/ne/S3, Freshwater Marsh in Riparian Woodland. Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Densely cespitose sedge on wet, sandy soil bordering a dredge pond. 32 Comment
  CDA13904  Carex xerophila G. F. Hrusa, T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC102214  Carex xerophila L. P. Janeway 2009-11-22 9968 Butte Northern High Sierra Nevada (northern edge). 'Magalia serpentine;' east side of Coutolenc Road about 0.1 km north of Skyway; between Skyway and the first bend of the gated road down to 'Magalia 72 Dam' diversion on West Branch Feather River. 700 Comment
  CHSC770  Caryopteris incana V. Holt 1952-7-2 Butte In Mrs. Sanborn's garden, Chico. 57 Comment
  SEINET14183557  Castilleja W. Short 1959-4-11 14 Butte US Hwy 40, 15 miles E of Oroville. 549 Comment
  CAS-BOT-BC249117  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC2932  Castilleja affinis W. Fitzwater 1958-4-19 Butte Humbolt Rd. Comment
  CHSC57514  Castilleja affinis Heather L. David 1990-4-24 57 Butte Ca. 0.7 mi ne of intersection of Coutolenc Rd. and Skyway, ca. 16 mi ne of Chico/ 701 Comment
  CHSC43192  Castilleja applegatei subsp. pinetorum R. A. Schlising 1981-4-12 4026 Butte E of Oroville. 365 Comment
  CHSC64667  Castilleja applegatei subsp. pinetorum H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 871 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. 1010 Comment
  JEPS60470  Castilleja applegatei subsp. pinetorum T. I. Chuang and L. Constance 1969-7-2 6709 Butte 8.6 mi sw Arch Rock Tunnel (on Highway 70) Comment
  POM193340  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville. 1550 Comment
  UC492737  Castilleja applegatei subsp. pinetorum H. F. Copeland 1929-6-10 1234 Butte Jonesville 1524 Comment
  CAS-BOT-BC255457  Castilleja applegatei var. pinetorum Lowell Ahart 1988-5-1 5978 Butte Along the North Fork of the Feather River a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap 920 Comment
  CHSC38710  Castilleja attenuata Vernon Oswald 1983-3-9 144 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Pard Rd. 0.5 mi e of the power lines. 213 Comment
  CHSC90167  Castilleja attenuata J. Lund 1980-4-19 Butte On a trail leading to the falls above Richardson Springs, northeast of Chico. On hillside. 121 Comment
  SEINET3450717  Castilleja attenuata Unknown 2003-4-10 10057 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  CHSC1830  Castilleja exserta P. Delaplane 1965-4-6 26 Butte Along side of Cohasset Rd. 3/4 mi. above Richardson Springs Rd. turnoff. 182 Comment
  CHSC90144  Castilleja exserta M. P. Howe 1984-4-1 11 Butte Salmon Hole, upper Bidwell Park. 182 Comment
  CHSC4004  Castilleja lacera J. E. Bowlin 1967-4-14 20 Butte Ca. 3 feet n of Cohasset Rd. and ca. 2.7 miles e of cornor of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  JEPS4518  Castilleja lacera Rimo Bacigalupi and L. R. Heckard 1952-6-20 3754 Butte 3.0 mi e Hurlebut (along road between Hurlebut and Forbestown) 762 Comment
  CAS-BOT-BC241129  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UC492736  Castilleja miniata H. F. Copeland 1932-7-24 Butte above Butte Creek Meadows (w wall of Butte Creek drainage, near rim); Jonesville, Butte Creek Comment
  CHSC11890  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Jonesville. In 'Scotch John' meadow. 1700 Comment
  CHSC11891  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  CHSC27264  Casuarina equisetifolia P. Moyer 1971-2-1 76 Butte CSUC campus. Cherry St. on sidewalk behind Engineering Bldg. 60 Comment
  CHSC47977  Catalpa speciosa Vernon Oswald 1987-5-18 2912 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  UC203656  Ceanothus cuneatus var. cuneatus A. A. Heller 1914-3-19 11210 Butte canyon of Big Chico Creek 76 Comment
  CAS-BOT-BC50781  Ceanothus integerrimus A. A. Heller 1928-4-30 14536 Butte Along the Neal Road about 3 miles below Paradise Comment
  CHSC37620  Ceanothus integerrimus T. B. Devine 1979-7-8 583 Butte Along Hwy 32, ca. 1/2 mi below T.V. cable antenna, ca. 11 mi N of Chico. Comment
  SEINET267155  Ceanothus integerrimus T. A. Ranker, P. G. Trapp 1994-6-17 1620 Butte Pence Road south of Paradise. 395 Comment
  UC1070777  Ceanothus integerrimus J. E. Sowder 1933-7-25 119 Butte just s Thompson's; Chico Quad. 1280 Comment
  SEINET5339315  Ceanothus integerrimus M. J. Williams, W. Roderick 1984-5-25 84- 22 -3 Butte Magalia, near Skyline road to Paradise. 168 Comment
  CHSC30795  Ceanothus integerrimus var. californicus M. S. Taylor; J. D. Jokerst 1980-4-18 2538 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  CHSC115316  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte On the east side of the road to the Forbestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC1512  Ceanothus lemmonii 1937-5-1 Butte Forest Ranch. 548 Comment
  CHSC90090  Ceanothus lemmonii Brent E. Palmer 1991-3-4 2 Butte 1 mi south of Forest Ranch on Hwy 32. 10 ft south of roadside. 609 Comment
  UC870592  Ceanothus lemmonii Lewis S. Rose 1937-6-10 37377 Butte Forbestown 838 Comment
  CHSC52466  Ceanothus prostratus Kate A. Hanson 1977-4-18 Butte Ca. 0.8 km E of hwy 32, ca 8 km ENE of Forest Ranch. Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  UC79907  Ceanothus velutinus Mrs. R. M. Austin July, 1896 757 Butte Colby Comment
  CHSC78251  Centaurium tenuiflorum Lowell Ahart 2000-6-21 8496 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC21039  Centromadia fitchii M. S. Taylor 1975-10-4 950 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CAS-BOT-BC288527  Centromadia fitchii David D. Keck 1932-7-2 1613 Butte 6 miles NE of Oroville, on road to Quincy 250 Comment
  CDA13342  Cephalanthera austiniae G. F. Hrusa, T. D. Wilfred 1996-7-9 13190 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  CHSC38294  Cerastium glomeratum Vernon Oswald 1983-3-9 142 Butte Upper Bidwell Park, Chico, on the abandoned road 400 ft n of Upper Park Rd. at Diversion Dam. In meadow. 115 Comment
  JEPS103292  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS122229  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  SEINET10537463  Cerastium viscosum Mary Susan Taylor 1975-4-6 Taylor 435 Butte Chico. 52 Comment
  CHSC113371  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte In shallow water, small pond on the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  JEPS122198  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte On the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  UC1101322  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  CHSC55491  Cercis occidentalis Ben Cunningham 1991-4-20 Butte Poe Dam, 10 ft w of Highway 70 and 52 mi s of Greenville. 609 Comment
  RSA31118  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Canyon of Big Chico Creek E of Chico. 69 Comment
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Feb 17 2016
  CHSC115455  Cercocarpus betuloides M. Sutton; C. Yasuda, S. Luse 2013-3-5 6 Butte Ten mile house trail. 391 Comment
  UCD113037  Cercocarpus betuloides J. I. Mallory 1968-7-1 297 Butte 2 miles W-SW of Mountain Home State Forest Headquarters, Sequoia National Forest. 1219 Comment
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Sep 9 2014
  CHSC37621  Cercocarpus betuloides var. betuloides T. B. Devine 1979-7-8 584 Butte Along Hwy 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC42976  Cercocarpus betuloides var. betuloides Lowell Ahart 1987-7-3 5748 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 548 Comment
  CHSC8622  Cercocarpus betuloides var. betuloides L. V. Ritter 1969-5-20 296 Butte Ca 2 mi. w of Paradise, 25 yds. s of Skyway. Comment
  UC187417  Chaenactis glabriuscula var. heterocarpha Mrs. R. M. Austin 1883-1-1 Butte Adobe Flat Chico, Adobe Flat Comment
  CHSC113527  Chamaesyce maculata Lowell Ahart 2014-9-23 19864 Butte South edge of the road, near the iron pole gate, parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC34126  Chamaesyce maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  JEPS115034  Chamaesyce maculata Lowell Ahart 2007-10-31 14520 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
  JEPS120617  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. Comment
  CHSC26001  Chamaesyce ocellata M. S. Taylor 1974-9-14 322 Butte In burn area opposite Alligator Hole, in Upper Bidwell Park, Chico. 121 Comment
  CDA35251  Chamaesyce ocellata T. C. Fuller 1962-6-11 8948 Butte Northwest corner of Pentz Rd. and Hwy 99E to Biggs, 9.4 miles southeast of Chico. 0 Comment
  JEPS115728  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  JEPS120607  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  SEINET10529949  Cheilanthes californica Mary Susan Taylor 1981-2-11 Taylor 3381 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  CAS-BOT-BC69440  Cheilanthes gracillima M. S. Taylor 1978-7-21 1840 Butte Big Bald Rock, ca. 2 mi. e. of Lake Madrone. 997 Comment
  POM121005  Cheilanthes gracillima C. C. Bruce 1898-05 2397 Butte Summit 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
  SEINET9340404  Chenopodium desiccatum Unknown 2007-10-7 13065 Butte Northern Sacramento Valley 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
  CHSC100478  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  CHSC34775  Chenopodium strictum var. glaucophyllum L. Ahart 1981-11-6 3230 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. 35 Comment
  CAS-BOT-BC451374  Chimaphila menziesii V. Oswald; L. Ahart 1988-7-29 3649 Butte 5 miles (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn 2097 Comment
  UCD59685  Chloris virgata Morton D. Morse 1955-8-19 s. n. Butte foothills near Pentz. Comment
  CAS-BOT-BC497800  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 miles east and 1 1/2 miles north of Honcut. 60 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
  CHSC38877  Chlorogalum pomeridianum var. pomeridianum Vernon Oswald 1983-6-20 726 Butte Upper Bidwell park, Chico, along Yahi Trail e of Brown's Hole. 198 Comment
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC62478  Chorizanthe polygonoides B. Castro 1987-5-21 117 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. On lava outcrop in bed of ephermeral drainage between two S-trending ridges, in opening in chaparral. 457 Comment
  CHSC39931  Chorizanthe polygonoides var. polygonoides M. S. Taylor; V. Oswald 1984-4-4 5392 Butte S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. In dry open bare patches on hillside. Comment
  HSC66335  Chorizanthe polygonoides var. polygonoides M. S. Taylor, R. S. Schlising, L. Ahart 1980-5-31 2756 Butte E side of Kunkle Reservoir, 0.25 mi. E of Pentz-Magalia Hwy., 3 mi. S of Paradise 442 Comment
  SEINET10473689  Chrysanthemum leucanthemum Mary Susan Taylor 1982-8-16 Taylor 4993 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-BC36372  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte Chico meadows 1219 Comment
  SD1113  Chrysolepis sempervirens E. B. Copeland 1931-7-27 Butte Jonesville 1650 Comment
  CHSC42205  Cicendia quadrangularis Kent Clement 1986-4-7 14 Butte On North Table Mountain, 10.5 km n of Oroville, w of Cherokee Rd. 411 Comment
  CHSC28678  Cirsium douglasii var. breweri M. S. Taylor 1978-7-19 1747 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC103144  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  RSA774139  Cistanthe monosperma L. Ahart 2010-9-28 17251 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  JEPS93841  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC725467  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte e Chico (back of the Salmon Hole on creek); Chico Creek Comment
  HSC31877  Clarkia arcuata Steven Lagos 1974-4-20 21 Butte Table Bluff Mtn. Comment
  SEINET5740165 Image available Clarkia arcuata Johann D. Watjen 1969-1 40 Butte Table Mountain, 7 miles S of Hwy 70, 0.2 miles off of Cherokee Road.; Table Mountain 610 Comment
  SFV10929  Clarkia biloba M. L. Vincent 1963-6-8 394 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC89905  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  CHSC99307  Clarkia biloba subsp. brandegeeae Lowell Ahart 2008-5-21 14789 Butte Below the high water line of Lake Oroville, on the steep east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  UCD104349  Clarkia biloba subsp. brandegeeae Joseph M. DiTomaso 1976-5-23 472 Butte Lake Oroville, peninsula at south end. 274 Comment
  JEPS108862  Clarkia concinna subsp. concinna Lowell Ahart 2006-5-19 12636 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CAS-BOT-BC164519  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis; M. Roberts 1951-5-19 830 Butte Road from Nimshaw to Butte Creek canyon, 2.3 mi. above bridge across Big Butte Creek Comment
  CAS-BOT-BC164521  Clarkia gracilis subsp. albicaulis Mrs. C. C. Bruce 1892-5-1 1954 Butte Little Chico Comment
  SEINET10453151  Clarkia gracilis subsp. albicaulis Mary Susan Taylor 1977-6-25 Taylor 1380 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC171877  Clarkia gracilis subsp. gracilis L. P. Janeway; Linnea Hanson; Perrie Cobb 1993-5-5 4344 Butte East side of Stringtown Road 0.25 mi north of Hurlton Road 451 Comment
  CAS-BOT-BC171882  Clarkia gracilis subsp. gracilis Lowell Ahart 1980-5-17 2286 Butte 1/2 mile south-east of Hurleton, Sierra Nevada 600 Comment
  UC1795594  Clarkia mildrediae G. F. Hrusa, T. D. Wilfred 1996-7-9 13161 Butte on USFS N60 approximately immed. E of bridge over Marble Creek 1150 Comment
  RSA108425  Clarkia mildrediae subsp. mildrediae Harlan Lewis, M. Lewis, F. Vasek 1950-7-1 756 Butte Highway 24, 0.5 mile south of Arch Rock on Feather River. Comment
  CAS-BOT-BC163356  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road 853 Comment
  CHSC23672  Clarkia purpurea M. S. Taylor 1976-4-27 1082 Butte Ca. 50 ft e of Cohasset Hwy, ca. 3 mi n of Chico. 60 Comment
  UCD104879  Clarkia purpurea R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  CAS-BOT-BC163641  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CHSC76949  Clarkia purpurea subsp. viminea Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  RSA108430  Clarkia rhomboidea Harlan Lewis, M. Lewis 1951-05 824 Butte Road from Oroville to Magalia, 1.65 mile south of road to Paradise. Comment
  RSA108431  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 758 Butte Highway 24, 0.8 mile south of Arch Rock, Feather River. Comment
  RSA448333  Clarkia rhomboidea L. Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  UC172865  Clarkia unguiculata A. A. Heller 1913-5-28 10767 Butte 8 mi n Oroville; Table Mountain 182 Comment
  POM219309  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jonesville; by Jones Creek. 1524 Comment
  CHSC3278  Claytonia parviflora subsp. parviflora M. L. Hillier 1966-5-11 Butte Along rd. side 2.4 miles 3. of covered bridge on Honeyrun rd. Comment
  CHSC34765  Claytonia parviflora subsp. parviflora S. M. Turek 1980-4-21 19 Butte Ca. 5 yds s of Humboldt Rd, 1.7 mi e of E. Monte Rd, 50 yds s of Hwy 32, 1 mi e of Chico. 71 Comment
  CHSC39068  Claytonia perfoliata subsp. perfoliata R. A. Schlising 1983-3-20 4395 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. On hilltop near scattered trees. Comment
  CAS-BOT-BC443705  Claytonia rubra Lowell Ahart 1987-5-6 5534 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC443703  Claytonia rubra M. S. Taylor 1982-5-23 4510 Butte S side of hwy 70, by Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CAS-BOT-BC443766  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Near Magalia Comment
  CAS-BOT-BC91354  Clematis lasiantha Lewis S. Rose 1963-6-2 63073 Butte 9 miles south of Pulga. North Fork of Feather River. 579 Comment
  SEINET12089666  Clematis lasiantha Unknown 1977-1 18 Butte 100 ft S of Cohasset Rd., 10.5 mi WNW of Chico, 13 mi from CSUC Comment
  CHSC42168  Collinsia sparsiflora Julie L. Brown 1986-4-1 Butte Ca. 1.6 km e of Chico on gravel road on the Brown Ranch adjacent to Upper Bidwell Park. 100 Comment
  UC196054  Collinsia sparsiflora var. sparsiflora A. A. Heller 1914-3-9 11190 Butte Chico, in a field near the U.S. Plant Introduction Garden Chico Comment
  CHSC33149  Collinsia tinctoria J. D. Jokerst 1981-5-14 1322 Butte Top of North Table Mt, ca 300 M north of Cherokee Rd at the West edge of the mountain. Comment
  CAS-BOT-BC180256  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 4983 Butte E along the dirt road, about 1/2 mile NE of Concow Res. 650 Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  CHSC30738  Corallorhiza maculata M. S. Taylor; R. A. Schlising 1980-7-6 3080 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  POM196099  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville 1550 Comment
  CAS-BOT-BC237926  Cordylanthus Lowell Ahart 1980-7-4 2450 Butte Near Hurleton 600 Comment
  CHSC39062  Cordylanthus tenuis subsp. viscidus R. A. Schlising; R. Banchero, A. Ratcliff 1980-9-6 3984 Butte NE of Oroville, about 5 miles SW village of Feather Falls. Comment
  UC725377  Cornus sericea subsp. sericea A. A. Heller 1938-7-20 15282 Butte 7 mi. e. on the Humbug Rd. Chaparral (upper end of Snag Lake) 1524 Comment
  CAS-BOT-BC210522  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CHSC48305  Cornus sessilis Vernon Oswald 1987-4-14 2324 Butte Butte Creek Trail ca. 0.2 mi s of the trailhead near the bridge over Butte Creek nne of De Sabla. 609 Comment
  JEPS106093  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  UC1562379  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  SEINET10483826  Cotoneaster pannosus Lowell Ahart 1991-6-19 Ahart 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East, southwest of Oroville Dam. Foothill Woodland. T19N R4E c/s/S2. 213 Comment
  CAS-BOT-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  CDA25355  Crassula connata T. C. Fuller 1958-4-15 4795 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  RSA636050  Crassula connata var. erectoides Michael A. Vincent, Ethan H. Freid 1998-4-6 8126 Butte Table Mountain Comment
  HSC66350  Crassula tillaea M. S. Taylor 1979-3-31 1972 .5 Butte Junction of Pentz-Magalia Rd. and Pentz Rd., SE corner, 1/4 mi. W of Hwy. 70, 22 mi. N of Oroville 198 Comment
  CHSC5963  Crataegus monogyna M. MacArthur 1968-6-17 204 Butte NW corner of Auditorium, ca. 20 ft. from entrance, Chico State College campus. 60 Comment
  CHSC6618  Crataegus monogyna M. MacArthur 1968-4-16 308 Butte SW side of Building T, Chico State College campus. 60 Comment
  JEPS98714  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SD122578  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte edge of dirt road, ar fork of Feather Falls and Lumpkin Ridge Rd., 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown 500 Comment
  SEINET10968835  Crucianella angustifolia Mary Susan Taylor 1980-5-27 Taylor 2726 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC69040  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  UC196313  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte Little Summit 1463 Comment
  UCR64631  Cryptantha affinis H. F. Copeland 1930-7-20 1386 Butte Jonesville 1524 Comment
  SEINET10497263  Cryptantha affinis Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4184 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  UCR237314  Cryptantha flaccida George K. Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UC79434  Cryptantha flaccida Mrs. R. M. Austin Jun 1883 Butte Little Chico Comment
  SEINET10497602  Cryptantha hendersonii Mary Susan Taylor 1981-6-19 Taylor 3964 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  JEPS108983  Cryptantha intermedia Lowell Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 354 Comment
  JEPS98598  Cryptantha intermedia Lowell Ahart 2000-5-31 8421 Butte 3 mi SE of Paradise (a serpentine ridge, about 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  UC480683  Cryptantha intermedia H. F. Copeland 1920-5-23 250 Butte ridge between Big Chico Creek and Little Chico Creek (Humboldt ridge) Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  CDA40502  Cryptantha torreyana T. C. Fuller 1962-7-12 9169 a Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA13881  Cupressus macnabiana G. F. Hrusa, T. D. Wilfred 1997-5-7 13740 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC75436  Cupressus macnabiana G. F. Hrusa; T. D. Wilfred 1997-5-7 13740 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  UC726581  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte Magalia Comment
  CHSC69  Cupressus sempervirens K. McKenzie 1928-4-25 Butte Planted specimen on Chico State Campus. Comment
  CAS-BOT-BC224367  Cuscuta Barbara Ertter; Jeffrey Strachan; Lowell Ahart 1980-5-8 3325 Butte Peter Ahart Ranch ca 2-1/2 mi NE of Honcut between Marysville & Oroville 30 Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  SEINET10496602  Cuscuta californica Lowell Ahart 1991-9-6 Ahart 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south- west of Gridley. Freshwater Marsh. T17N R1E S13. 30 Comment
  UCD169293  Cuscuta campestris Lowell Ahart 2006-10-1 13388 Butte About 12 miles (air) southeast of Oroville, about 2 1/2 miles north and 2 3/4 miles east of Honcut, west of North Honcut Creek. 54 Comment
  CHSC105271  Cuscuta howelliana Lowell Ahart 2010-6-20 16824 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC107566  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 -A Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC94555  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just 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
  CHSC42336  Cycladenia humilis var. humilis L. P. Janeway 1987-6-27 2336 Butte Ridge overlooking Little Kimshew Cr to the east; 0.6 mi north of Ramsey Bar along the Concow Rd. 1432 Comment
  UC725368  Cycladenia humilis var. humilis A. A. Heller 1938-7-20 15275 Butte ridge between Inskip and Chaparral 1524 Comment
  JEPS95935  Cycloloma atriplicifolium Lowell Ahart 1999-8-13 8159 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
  CHSC27981  Cymopterus terebinthinus var. californicus M. S. Taylor 1978-7-18 1708 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC116949  Cynoglossum grande Matthew Forster 2013-4-2 Butte Hwy 32 off of 10 Mile House Rd. Found along hiking path of 10 Mile House Rd. 457 Comment
  CHSC32142  Cynoglossum grande L. Ahart 1975-4-1 731 Butte Trail head to Feather Falls near Feather Falls community. 487 Comment
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  SEINET10502764  Cyperus Lowell Ahart 1984-9-24 Ahart 4810 Butte Along edge of Middle Honcut Road, ca. 3/4 mi E of Hwy 70, ca. 12 mi S of Oroville. Valley Grassland; 35 m. 35 Comment
  CHSC61342  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC45125  Cyperus difformis Vernon Oswald 1987-8-13 3214 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Gravel bar along the river. 48 Comment
  SEINET8756313 Image available Cyperus difformis J. M. Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CHSC2109  Cyperus eragrostis D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  CHSC94590  Cyperus eragrostis Lowell Ahart 2006-9-11 13298 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  HSC87074  Cyperus eragrostis L. P. Janeway, C. A. Janeway 1986-9-14 1864 Butte Pine Creek Landing 40 Comment
  UC1100532  Cyperus eragrostis Herbert L. Mason and Verne Grant 1946-8-15 13050 Butte #833 Irrigation Ditch near caretaker's house Greylodge Game Refuge; Butte Sink, Greylodge Game Refuge Comment
  UC1100538  Cyperus eragrostis Herbert L. Mason and Verne Grant 1945-7-10 12634 Butte n. of Marysville (marshes along Butte Creek, Butte Sink); Butte Sink, Grey Lodge Game Refuge Comment
  CHSC108132  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC113130  Cyperus erythrorhizos Lowell Ahart 2013-11-17 19267 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC45158  Cyperus erythrorhizos Lowell Ahart 1974-11-9 671 Butte Near the edges of our drained rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS124351  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  JEPS95920  Cyperus esculentus Lowell Ahart 1999-8-13 8141 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC114224  Cyperus flavescens John Thomas Howell 1959-9-20 34638 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CDA42942  Cyperus flavescens L. Ahart 2012-10-2 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCD16182  Cyperus flavicomus Joe DiTomaso 2000-8-30 s.n. Butte University of California Biggs Rice Research Station, near corner of Riceton and Hamilton Roads. Comment
  CDA2587  Cyperus fuscus L. Ahart, Vernon Oswald 1999-10-3 8287 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC28662  Cyperus niger J. D. Jokerst 1979-10-12 376 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  JEPS115055  Cyperus niger Lowell Ahart 2007-11-3 14554 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
  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
  SEINET11268266  Cyperus niger Lowell Ahart 2000-8-23 8662 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville.; 0 43 Comment
  CAS-BOT-BC113846  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mi NE of Kunkle Res., S of Paradise. 600 Comment
  CHSC113384  Cyperus strigosus Lowell Ahart 2014-6-13 19534 Butte Border of an irrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  CHSC37104  Cyperus strigosus L. Ahart 1982-9-12 3796 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC68420  Cyperus strigosus L. P. Janeway 1988-6-29 2904 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  JEPS120149  Cyperus strigosus Lowell Ahart 2012-10-20 18501 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS95921  Cyperus strigosus Lowell Ahart 1999-8-13 8140 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
  UC116910  Cypripedium fasciculatum Mrs. R. M. Austin 1879-1 198 Butte Butte Valley Comment
  UC1191380  Cypselea humifusa Malcolm A. Nobs, S. Galen Smith 1949-7-29 1088 Butte on road from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CHSC87954  Cystopteris fragilis Lowell Ahart 2004-6-22 11116 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
  CHSC99557  Cystopteris fragilis L. P. Janeway 2008-6-15 9412 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
  JEPS116130  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  SD9857  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, by Butte Creek 1550 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  SEINET10937953  Cystopteris fragilis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4130 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC38805  Dactylis glomerata Vernon Oswald 1982-5-23 Butte Upper Bidwell Park, Chico, near the east end of Yahi Trail. Near Chico Creek. 207 Comment
  CHSC42902  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CAS-BOT-BC189897  Danthonia californica H. F. Copeland 1931-6-11 1558 Butte Jonesville. Butte Creek Meadows. 1828 Comment
  SEINET4566566  Danthonia californica R. McKee, H. Westover 1918-6-15 814860 Butte Paradise Comment
  CHSC29002  Darmera peltata M. S. Taylor 1980-3-19 2387 Butte In Macabes Creek, in 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
  CHSC36297  Daucus carota M. S. Taylor 1982-8-16 4986 Butte Just n of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  CHSC30032  Delphinium gracilentum L. Ahart 1980-5-25 2337 Butte Near the intersection of Forbestown Rd and Ponderosa Way, near Old Forbestown. 1000 Comment
  CHSC93081  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge. 1127 Comment
  CHSC90183  Delphinium nudicaule Ken Larsen 1989-4-15 19 Butte Near Salmon Hole, Upper Bidwell Park, Chico; about 5 km east of Chico Municipal Golf Course. 250 Comment
  SEINET12089324  Delphinium nudicaule J. D. Mott 1978-1 20 Butte Cherokee Quadrangle, upper Miocene Canal 448 Comment
  CHSC100790  Delphinium variegatum J. D. Jokerst; R. A. Schlising 1981-4-16 1300 Butte 0.9 mi E of Bangor Road on Swedes Flat Road. Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  CHSC52502  Delphinium variegatum Tom R. Norton 1977-4-24 22 Butte Ca. 9.4 mi nw of Chico, 1.8 mi e of Hwy. 99, 10 yds e of Cana-Pine Creek Rd. Field. 60 Comment
  CHSC52507  Delphinium variegatum Lisa Sedlacek 1978-4-19 13 Butte Collected on the ne corner at the jct of Humbug and the Skyway. 77 Comment
  CHSC25133  Delphinium variegatum subsp. variegatum J. Brattan 1974-4-15 5 Butte Found ca. 25 ft. s of Skyway, ca. 1.5 mi se of Burton's Mesa Restaurant, ca. 6 mi e of Chico. 152 Comment
  CHSC36362  Delphinium variegatum subsp. variegatum J. D. Jokerst 1982-4-12 1525 Butte South of Clark Rd. 0.4 mi N of its junction with Hwy 70. Comment
  CHSC94938  Delphinium variegatum subsp. variegatum K. Lang; J. Lang 2005-3-23 35 Butte Humboldt Rd., Chico. [Label says] Coordinates: 39 degrees 75.989 minutes N, 121 degrees 73.496 minutes W. 289 Comment
  CHSC9126  Deschampsia cespitosa Willis Ball 1970-3-10 69 Butte Along the Skyway to Paradise, about 5 miles after the turn off to Paradise from hwy 99E. On the right side of the road. 182 Comment
  CAS-BOT-BC194308  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1988-9-4 6180 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air miles north-east of Jones Meadow 1920 Comment
  CHSC113954  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10524196  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  CHSC39497  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  UCD63286  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows. 1402 Comment
  CHSC54003  Descurainia sophia Vernon H. Oswald 1991-4-8 4487 Butte Hwy 99, 0.3 mi south of Meridian Rd, north of Chico. On the east side of the road. 54 Comment
  CHSC97324  Dianthus armeria subsp. armeria L. P. Janeway 2007-7-11 9115 Butte Northern High Sierra Nevada. Plumas National Forest; along the edge of Road 22N49 200 m south of 4 Mile Ridge Road and 35 m north of Oroville-Quincy Hwy (and 15 m lower). 991 Comment
  UC1362282  Dicentra formosa Kingsley R. Stern 1964-4-21 2059 Butte ca 0.5 mi e Poe Power Dam (banks of Heinz Creek, s side of canyon of North Fork of Feather River); Pulga Quad., Heinz Creek Comment
  SEINET10892860  Dichanthelium lanuginosum Lowell Ahart 1987-5-27 Ahart 5715 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC9271  Dichelostemma capitatum subsp. capitatum D. C. Burns 1971-3-17 101 Butte Abundant 5 yds. N side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 Comment
  UCSB63605  Dichelostemma capitatum subsp. capitatum Woodmansee, B. 1987-4-7 Butte Skyway, Hamlin Canyon 274 Comment
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  CHSC2092  Dichelostemma multiflorum N. Maxwell 1929-3-28 Butte Richardson Springs. 274 Comment
  RSA21172  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  UC203548  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 mi n Oroville (near Table Mountain) Comment
  CAS-BOT-BC501091  Dichelostemma multiflorum C. R. Quick 1941-6-8 41 -02 Butte About 2 miles south of Big Bar Mt. Comment
  SEINET12044750  Dichelostemma multiflorum L. S. Rose 1937-1 37353 Butte Hurleton 579 Comment
  CHSC44434  Dichelostemma volubile Lowell Ahart 1988-5-30 6017 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  SD6374  Dichelostemma volubile Mrs. R. M. Austin 1883-1 Butte No further locality information on label. Comment
  CHSC29252  Digitaria sanguinalis M. S. Taylor 1979-10-2 2209 Butte Sacramento River at Chico Landing, off River Rd., ca. 5 mi w of Chico. 30 Comment
  RSA126966  Digitaria sanguinalis H. S. Yates 1936-8-14 6118 Butte 10 miles S. of Durham 30 Comment
  CAS-BOT-BC153762  Diplacus angustatus Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC43556  Diplacus grandiflorus Lowell Ahart 1977-4-28 1325 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  CHSC44813  Diplacus grandiflorus R. Banchero 1980-4-19 123 Butte Along Lumpkin Rd ca 1.9 mi S of the Enterprise Bridge, 2.0 mi NE of its jct with Forbestown Rd. 390 Comment
  SEINET13751508 Image available Diplacus grandiflorus Margaret J. Williams, Wayne Roderick 1984-1 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CHSC38703  Diplacus kelloggii Vernon Oswald 1983-3-13 156 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. and ca. 2.4 mi e of the power lines. 243 Comment
  CHSC47500  Diplacus kelloggii Lowell Ahart 1973-3-24 183 Butte On the north side of Swedes Flat Road, about 1/4 mile east of the bridge across Rocky Honcut Creek, north of Bangor. 487 Comment
  CHSC47501  Diplacus kelloggii Lowell Ahart 1974-4-15 417 Butte On the north side of Swedes Flat Road, about 1/4 mile east of the bridge across Rocky Honcut Creek, north of Bangor. 487 Comment
  CHSC71193  Diplacus kelloggii Lowell Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC28699  Diplacus torreyi M. S. Taylor 1978-7-21 1813 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC44716  Diplacus torreyi R. Banchero 1980-6-23 260 Butte Along Eagle Gulch Rd 1.4 mi N of its jct with Laporte Rd, 2.0 mi SW of Sly Reservoir. 1059 Comment
  CHSC44745  Diplacus torreyi R. Banchero 1980-7-7 289 Butte Along Quartz Creek Rd 0.3 mi N of the Fall River campground, ca 6.5 mi NE of the town of Feather Falls. 1021 Comment
  CAS-BOT-BC154038  Diplacus torreyi Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CAS-BOT-BC154174  Diplacus tricolor Peter H. Raven 1963-5-8 18360 Butte On State Highway 32, 5 miles west of Chico Comment
  CHSC91109  Diplacus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  SEINET8255121  Diplacus tricolor K. L. Chambers 1991-4-30 5551 Butte junction of Hwy. 99 with Hwy. 149, between Chico and Oroville. Comment
  RSA461468  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte [Unspecified] 1524 Comment
  CHSC3620  Dodecatheon clevelandii subsp. patulum John Francis 1966-2-21 22 Butte 1/2 mile S. of intersection on Neal Rd. and Hwy 99E on Neal Road. Plant growing in pasture. Comment
  UC1185278  Dodecatheon clevelandii subsp. patulum H. E. Brown Apr. 1-15, 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  UC640447  Dodecatheon clevelandii subsp. patulum Elmer I. Applegate 1927-3-4 5000 Butte about ten mi n Chico; n of Chico Comment
  CHSC46085  Dodecatheon hendersonii Lowell Ahart 1989-3-25 6197 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  POM76672  Dodecatheon hendersonii C. C. Bruce 1897-03 s.n. Butte Butte Creek. Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 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
  CHSC72400  Dopatrium junceum Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  CHSC46675  Downingia bacigalupii V. Oswald; L. Ahart 1989-8-15 3943 Butte Soda Ridge Road, 1.4 mi w of its jct with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC75360  Downingia bicornuta Jennifer Slater 1997-4-27 34 Butte In the vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC112888  Downingia bicornuta var. bicornuta Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC81239  Downingia bicornuta var. bicornuta J. Trizzino 2001-4-25 60 Butte Oro-Chico Highway, 0.25 mi west of Neal Road. 54 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
  SD116534  Downingia cuspidata Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-7 3311 Butte North Table Mountain, ca. 5.0 miles north of Oroville. 395 Comment
  RSA337380  Downingia cuspidata L. Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca 1.5 miles N and 0.5 miles E of Honcut, ca 12 miles S of Oroville. 50 Comment
  CHSC115370  Downingia insignis Lowell Ahart 2015-4-24 20058 Butte Normal size plants, on dry to wet bare soil, bottom and sides (road edges) of a large duck field. 19 Comment
  CHSC26815  Downingia ornatissima M. S. Taylor 1978-5-7 1609 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  JEPS119712  Downingia ornatissima var. ornatissima Lowell Ahart 2012-5-2 17965 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CAS-BOT-BC41346  Draba verna Lowell Ahart 1980-3-8 2032 Butte Honcut. Peter Ahart Ranch. 50 Comment
  RSA325019  Draba verna L. Ahart 1984-2-27 4497 Butte Peter Ahart Ranch, NE of Honcut, ca 12 miles S of Oroville. 50 Comment
  CHSC34538  Draba verna var. aestivalis A. K. Bos 1978-3-11 1 Butte Along Cohasset Hwy, 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, 7 mi ne of Chico. Comment
  CHSC35015  Draba verna var. aestivalis R. E. Preston 1982-3-20 192 Butte Along trail to Bear Ranch Creek falls, at Hwy 70, ca. 22 mi nne of Oroville. 463 Comment
  RSA304016  Draperia systyla Jim R. Shevock 1972-5-19 1780 Butte Hwy 70, Feather River Canyon. 610 Comment
  CHSC51866  Drosera rotundifolia L. P. Janeway 1987-7-5 2445 Butte 0.4 mi E on a spur rd from the Concow Rd, which is ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  CHSC101753  Drymocallis glandulosa var. glandulosa Lowell Ahart 2009-5-23 15739 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
  CHSC12121  Dryopteris arguta M. F. Smith 1972-4-22 10 Butte 500 yds. Southeast from intersection of Madrone Meadows Road and old Georgia Pacific Railroad bed. South of Feather Falls Community. 914 Comment
  CHSC3409  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  CHSC3432  Dryopteris arguta Judy Potter 1966-3-7 112 Butte Above Honey Run Bridge. 2.3 miles south The Skyway. Comment
  RSA715710  Dryopteris arguta L. Ahart 2005-1-20 11473 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  SD233996  Dryopteris arguta Virginia Pinkus Ryder 1965-4-4 410 Butte Magalia, Feather River. 60 Comment
  CHSC36120  Dudleya cymosa K. Bridwell 1978-5-25 114 Butte Along n side of Skyway Rd, ca. 3 mi sw of Paradise. 609 Comment
  CHSC94591  Dysphania ambrosioides Lowell Ahart 2006-9-11 13281 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
  JEPS128762  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south Oroville. Comment
  UCSB64005  Dysphania ambrosioides Ahart, Lowell; Jokerst, Jim 1981-9-26 Butte Near the Sacramento River, about 6 miles west of Chico 36 Comment
  CHSC108179  Dysphania botrys L. P. Janeway 2011-8-18 10663 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. 912 Comment
  CHSC116288  Dysphania pumilio Lowell Ahart 2015-10-25 20595 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
  CHSC38312  Dysphania pumilio Vernon Oswald 1983-6-13 675 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. Common around a refuse dump. 85 Comment
  CHSC99647  Echinochloa colona H. Koeth 2007-5-5 Butte End of Santa Clara Ave. off Rose Ave., Chico. UTM 10 609663E 4406233N. 57 Comment
  CAS-BOT-BC197101  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC110387  Echinochloa crus-galli Lowell Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 64 Comment
  CHSC42908  Echinochloa crus-galli Lowell Ahart 1987-7-3 5757 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS120038  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  UC1563279  Echinochloa crus-galli Lowell Ahart 1990-9-30 6604 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  UCD60819  Echinochloa crus-galli P. B. Kennedy 9-10 Aug 1921 Butte Butte County. Comment
  SEINET10509298  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  UCD61101  Echinochloa muricata var. microstachya E. M. Johnston 1915-1 W- 1415 -J Butte Biggs. Comment
  CAS-BOT-BC208572  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  UCD61171  Echinochloa oryzoides P. B. Kennedy 1921-8-9 D Butte Rice Station, Biggs. Comment
  SEINET10474220  Eclipta alba Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5147 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
  CHSC31436  Eclipta prostrata L. Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, ca. 2 mi n and 0.5 mi e of Honcut. 50 Comment
  CHSC31569  Eclipta prostrata L. Ahart 1974-11-9 677 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC111506  Elatine Lowell Ahart 2014-4-17 19379 Butte On dry black clay soil, bottom of a rice field, about 20 yards north of Faris Road, about 400 yards west of the grain bins, east of the deep ditch, about 2 1/4 miles southwest of Biggs. Agricultural. 24 Comment
  CHSC78979  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station; field on south side of Hwy 162 between the railroad and Riceton Rd. 30 Comment
  JEPS122284  Elatine californica Lowell Ahart 2014-4-9 19349 Butte South of Rutherford Road, about 1/4 mile southeast of the headquarters of the Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. Comment
  CHSC45130  Eleocharis acicularis Vernon Oswald 1987-8-10 3199 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  CHSC78920  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-10-2 8699 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC113462  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  SD425  Eleocharis bella E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SEINET3441892  Eleocharis bella Unknown 2000-7-11 8577 Butte Feather Falls, Feather Falls, about 4 air miles northeast, sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-Nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the county road 1210 Comment
  CHSC45313  Eleocharis coloradoensis Vernon Oswald 1988-9-21 3703 Butte Rancho Arroyo Chico. East side of Sacramento River just upstream from the Washout (Chico Landing Site). 35 Comment
  SEINET7585972 Image available Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UCD49597  Eleocharis engelmannii John M. Tucker 1953-8-28 2677 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC45131  Eleocharis macrostachya Vernon Oswald 1987-7-20 3139 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CHSC68435  Eleocharis macrostachya L. P. Janeway 1987-5-7 2017 Butte Bottom of Dead Horse Slough draining the California Park lake, just west of California Road and about 300 ft north of Hwy 32. 74 Comment
  CHSC116302  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 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
  CHSC40415  Eleocharis pachycarpa Lowell Ahart 1985-8-11 5161 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC44293  Eleocharis pachycarpa V. Oswald 1988-6-8 3359 Butte South border of a small pond in the Oroville Wildlife Area on the w side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  CHSC78196  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8289 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 39 Comment
  RSA718781  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow 1082 Comment
  SEINET13710023  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8387 Butte 13 Mi. SE of Oroville, 4 Mi. NE of Honcut (T17N, R4E, sec 12, SE 1/4) 180 Ft. 55 Comment
  SEINET3478049  Eleocharis pachycarpa Unknown 2000-7-18 8597 Butte Oroville, Oroville, about 4 air miles southwest, about 0.5 miles west of Pacific Heights Road, Oroville Wildlife Area 40 Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  CHSC76304  Eleocharis parishii Lowell Ahart 1999-9-21 8277 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
  JEPS98597  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC78307  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City. 1310 Comment
  JEPS98521  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte South margin of the boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS98520  Eleocharis suksdorfiana Lowell Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City. 1310 Comment
  JEPS122217  Elodea canadensis Lowell Ahart 2014-4-16 19371 Butte On the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10501556  Elodea canadensis Mary Susan Taylor 1979-11-11 Taylor 2278 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM183186  Elymus elymoides H. F. Copeland 1930-7-21 1350 Butte Jonesville. 1524 Comment
  CHSC99759  Elymus elymoides subsp. californicus Lowell Ahart 2008-6-13 14822 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC101066  Elymus glaucus R. A. Schlising; R. Preston, R. Banchero 1981-6-22 4107 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CAS-BOT-BC203418  Elymus glaucus subsp. glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  JEPS120108  Elymus glaucus subsp. glaucus Lowell Ahart 2012-6-28 18239 -A Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC31714  Elymus multisetus L. Ahart 1977-6-16 1419 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET11266286  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico. Erect shrub without need of support, about 2 feet high.; 0 Comment
  CHSC62472  Epilobium brachycarpum L. P. Janeway 1993-9-7 4585 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  UC204379  Epilobium brachycarpum A. A. Heller 1914-7-23 11602 Butte edge of the forest about Chico Meadows 1219 Comment
  UC600545  Epilobium brachycarpum H. F. Copeland 1932-7-26 Butte Butte Creek Canyon Jonesville (along fisherman's trail) Comment
  JEPS127038  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC13471  Epilobium canum subsp. latifolium J. R. Birmingham 1972-4-5 7 Butte Against cliff, ca. 1000 yds. se of Municipal Golf Building, Chico. 182 Comment
  CHSC26296  Epilobium canum subsp. latifolium J. P. Kroessig 1977-8-1 22 Butte E margin of Hwy 32, ca 6 km wsw of Butte Meadows. Roadside. 1098 Comment
  UC1563292  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6624 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  CHSC94760  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  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
  RSA0074183  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-11 13287 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. 432 Comment
  CHSC60115  Epilobium cleistogamum B. Castro; L. P. Janeway 1992-5-16 455 Butte In bottoms of vernal pools and drainage channels SE of Neal Road. 54 Comment
  CHSC75291  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte Along a drain ditch in a pasture field, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC58928  Epilobium densiflorum Lowell Ahart 1992-8-2 6903 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS119814  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 -A Butte On the south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. Comment
  CAS-BOT-BC165939  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end; Along dirt road 21N25A 1079 Comment
  CHSC52095  Epilobium glaberrimum M. S. Taylor 1978-7-18 1726 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  UC1564801  Epilobium glaberrimum subsp. glaberrimum V. Oswald and L. Ahart 1989-7-12 3856 Butte road between Inskip and Jones Meadow (roadside drainage); Fish Creek 1432 Comment
  UC1609429  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 1993-7-22 7091 Butte e side of campground rd about 1/4 mi nw bridge across Fall River (about 6 air mi ne of Feather Falls); Fall River 1036 Comment
  UCD111115  Epilobium minutum Christopher Mallek 2008-1 HW1- 8 Butte Magalia. 756 Comment
  SEINET10841085  Epilobium minutum Lowell Ahart 1984-6-8 Ahart 4674 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  SEINET10453021  Epilobium obcordatum Mary Susan Taylor 1979-7-21 Taylor 2149 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10453182  Epilobium paniculatum Mary Susan Taylor 1980-9-27 Taylor 3343 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  JEPS107758  Epilobium torreyi Lowell Ahart 2005-5-11 11795 Butte Swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  JEPS117208  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  CHSC109673  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC42397  Epipactis gigantea Lowell Ahart 1987-6-9 5729 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  RSA718080  Equisetum laevigatum L. Ahart 2006-7-16 12984 Butte About 3/4 (air) mile northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows., West edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin. 1570 Comment
  CAS-BOT-BC57256  Equisetum laevigatum Lowell Ahart 1968-5-5 s.n. Butte Peter Ahart Ranch, Honcut, Bank of North of Honcut Creek 150 Comment
  CAS-BOT-BC204532  Eragrostis curvula Lowell Ahart 1984-5-19 4608 Butte Along the edges of Highway 70, about 1 mile south of the intersection of Cherokee Road and Highway 70, about 12.5 miles north of Oroville 300 Comment
  JEPS114995  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
  CHSC100523  Eragrostis pectinacea var. pectinacea Lowell Ahart 2008-11-4 15405 Butte On the east edge of the paved road, about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. 273 Comment
  SEINET11688373  Eragrostis pilosa Unknown 1985-1 5202 Butte end of Nelson Bar Road, about 1 mi S of Kunkle Reservoir, about 3 mi S of Paradise 302 Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  CAS-BOT-BC174177  Eremogone cliftonii Lewis Rose 1967-1-1 69075 Butte Rodgers Flat, Feather River 609 Comment
  CHSC41870  Ericameria arborescens Lowell Ahart 1986-10-16 5406 Butte Along Ponderosa Way, about 1/2 mile south of Lumpkin Road, about 3 miles south-west of Feather Falls. 609 Comment
  CHSC26700  Ericameria bloomeri M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1492 Butte On both sides of Scott Johns Rd, ca. 2 mi s of its jct with Old Humboldt Rd, se of Jonesville. 1981 Comment
  CHSC20959  Ericameria nauseosa var. speciosa M. S. Taylor 1975-9-19 920 Butte Ca. 1/2 mi n of Magalia. 609 Comment
  CHSC28381  Ericameria nauseosa var. speciosa J. D. Jokerst; M. S. Taylor 1979-10-13 390 Butte Jordan Hill RD. (Ponderosa Way) 2.8 mi. N. of junction with Concow Cr. 609 Comment
  CHSC78992  Erigeron canadensis Lowell Ahart 2000-11-4 8716 Butte Just north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  UCD131759  Erigeron canadensis A. A. Heller 1914-8-13 11680 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC300617  Erigeron foliosus var. hartwegii Lowell Ahart 1983-7-24 4211 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC58252  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte Along Oregon Gulch, Lake Oroville Recreation Area, about 1 1/4 miles west of Oroville Dam. 91 Comment
  LA203585  Erigeron inornatus E. B. Copeland; 1930-8-6 490 Butte Jonesville 1550.0 Comment
  CHSC44154  Erigeron lassenianus var. lassenianus V. Oswald; L. Ahart 1988-7-26 3617 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  UC1730265  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft SW of the Gap 1280 Comment
  CHSC33364  Eriodictyon californicum S. Posner 1972-9-24 Butte Betweem dredger tailings off Humbug Rd. 200 yds. south of Humbug Rd., 3 miles east of Skyway. Comment
  UCR190686  Eriodictyon californicum 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
  SEINET10969182  Eriodictyon californicum Mary Susan Taylor 1980-4-18 Taylor 2532 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  SEINET10479518  Eriogonum luteolum Mary Susan Taylor 1978-7-18 Taylor 1670 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC76063  Eriogonum luteolum var. luteolum G. F. Hrusa; T. D. Wilfred 1996-7-8 13104 Butte Serpentine outcrop at corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. 580 Comment
  CHSC39078  Eriogonum marifolium var. marifolium R. A. Schlising; K. Tarp 1983-8-12 4442 Butte N part of county, NE of Philbrook Reservoir on road to Carr Mine; 1.2 mile W of Plumas County line. 1981 Comment
  CHSC44045  Eriogonum marifolium var. marifolium L. P. Janeway 1987-7-5 2458 Butte 2.5 mi north of Jones Mdw along rd to Philbrook Reservoir. 1920 Comment
  CAS-BOT-BC261464  Eriogonum nudum var. nudum Lowell Ahart 1982-9-29 3843 Butte Along Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, about 3 1/2 miles north-west of Strawberry Valley. The road goes through the mine tailings. The road is the one from Sly Creek Reservoir to Mooreville Ridge 1200 Comment
  UCSC010541  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 A Butte Along both sides of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile southwest of the Forbestown Reservoir Dam, about 2 air miles north and 3 1/2 miles east of Forbestown. 762 Comment
  CAS-BOT-BC367999  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC31772  Eriogonum roseum Lowell Ahart 1974-9-30 639 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  JEPS122289  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS100230  Eriogonum umbellatum var. speciosum Dean W. Taylor 2002-7-3 18215 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
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Jan 25 2016
  RSA0056354  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Highway 70. 548 Comment
  SEINET10937585  Eriogonum ursinum Mary Susan Taylor 1979-7-21 Taylor 2145 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC98660  Eriogonum ursinum var. ursinum B. Castro; L. P. Janeway 2005-8-8 1513 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. E-facing upper edge of knoll on rocky serpentine ridge within patchy lower Mixed Conifer forest. 1021 Comment
  RSA285075  Eriogonum vimineum J. T. Howell 1959-9-20 34615 Butte Sandy gravelly flats along Feather River near Oroville. 46 Comment
  JEPS110205  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC38153  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1983-5-12 1765 Butte Table Mountain. West of Phanton Falls ca. 500 meters along the south edge of Coal Cr. Canyon. 365 Comment
  SEINET10475231  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-4-19 Taylor 2535 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  JEPS119602  Erodium brachycarpum Lowell Ahart 2012-4-9 17844 Butte About 5 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CDA5616  Erodium cicutarium L. Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  SEINET10907339  Erysimum capitatum Mary Susan Taylor 1978-7-18 Taylor 1712 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC27980  Erysimum capitatum var. capitatum M. S. Taylor 1978-7-18 1712 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  SD7062  Erythranthe bicolor Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC113519  Erythranthe breweri Lowell Ahart 2014-7-7 19599 Butte Depression in a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC153867  Erythranthe glaucescens Frank W. Gould 1938-4-23 304 Butte Two miles north of Chico 60 Comment
  CAS-BOT-BC153871  Erythranthe glaucescens John Thomas Howell 1951-8-19 28155 Butte 2 miles west of Pulga 365 Comment
  CHSC105770  Erythranthe glaucescens Christopher T. Ivey 2010-6-7 375 Butte Honey Run Road, 3.5 km NE of bridge crossing Butte Creek, in roadside ditch. 165 Comment
  CHSC3369  Erythranthe glaucescens M. Gregg 1966-4-23 99 Butte In front of Paradise water reservior number 73. On the Skyway. Comment
  CHSC85410  Erythranthe glaucescens John Dittes; Josephine Guardino 1992-5-7 480 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; south-facing slope, north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC84397  Erythranthe guttata Lowell Ahart 2003-7-23 10438 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 Comment
  CHSC88858  Erythranthe guttata Christine Hantelman 2000-4-20 76 Butte In slough about 1.25 miles east on Wookey Road. 109 Comment
  CAS-BOT-BC151460  Erythranthe latidens Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC1790  Erythranthe nasuta L. Oliver; D. Sloan 1939-3-27 Butte Rifle Range, Chico Creek. 91 Comment
  CHSC64223  Erythranthe primuloides S. C. Morey 1983-7-28 631 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  SEINET10938446  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3515 Butte T23N R4E se sec 36, Pulga SW quad. Serpentine embankment, s side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek canyon, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 2l air mi n of Oroville. 3300 ft. 1006 Comment
  CDA14073  Erythronium multiscapideum G. F. Hrusa, T. D. Wilfred 1997-5-1 13720 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Comment
  CAS-BOT-BC504538  Erythronium multiscapideum M. S. Taylor 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia 853 Comment
  JEPS119533  Eschscholzia caespitosa Lowell Ahart 2012-4-20 17898 Butte On the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC402642  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  CAS-BOT-BC402644  Eschscholzia caespitosa Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  POM253318  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1938-4-23 15052 Butte West side of the summit on the Feather River Highway near the Yankee Hill road Comment
  CAS-BOT-BC402961  Eschscholzia californica John Thomas Howell 1962-6-15 37469 Butte Magalia 731 Comment
  CHSC40627  Eschscholzia californica Ahart; Jokerst 1985-3-24 4860 Butte Found growing west of Lunt Road, about 1/2 miles north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC31778  Eschscholzia lobbii L. Ahart 1974-4-14 409 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET12092006  Eschscholzia lobbii Unknown 1979-1 17 Butte Small population ca 5 mi SE of the town of Cherokee on Cherokee Road on Table Mtn., 23 mi SE Comment
  CHSC48616  Eucalyptus rudis Vernon Oswald 1987-7-4 3089 Butte Rancho Aquas Frias. Nelson West Rd. at 7-Mile Lane, between Chico and Butte City. 30 Comment
  CDA18873  Euphorbia oblongata R. Hill, L. Pejsa 2000-5-15 PDR 1174221 Butte along Bille Rd., Paradise. 0 Comment
  UC1594705  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 1992-7-21 6794 Butte on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir Comment
  CHSC62356  Euphorbia spathulata B. Castro 1990-4-21 420 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. Near top of embankment at foot of canyon hillside. 146 Comment
  CHSC9139  Euphorbia spathulata M. P. Coffeen 1970-4-14 16 Butte 100 yds. S. of Horseshoe Lake in Bidwell Park, Chico. 91 Comment
  CHSC38347  Euthamia occidentalis Vernon Oswald 1983-9-24 1045 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  CHSC42756  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC94615  Euthamia occidentalis Lowell Ahart 2006-9-11 13275 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC413861  Fallopia convolvulus Lowell Ahart 1983-8-10 4269 Butte Along La Porte Road, about 4 miles north-east of Bangor 350 Comment
  CHSC118578  Festuca californica Nancy Groshong 2017-4-30 2 Butte Magalia Serpentine. South side of Coutelenc Road east of Skyway. 701 Comment
  SEINET10508574  Festuca californica Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4701 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA700272  Festuca occidentalis L. Ahart 2004-7-23 11298 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook, Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  SEINET10662355  Festuca occidentalis Lowell Ahart 2007-5-29 Ahart 13942 Butte T21N, R6E, Section 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trailhead which is 3/10 mi E of Bean Creek Road, about 2 miles (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  CHSC49549  Festuca rubra Vernon Oswald 1988-5-17 3313 Butte Just w of the dam of Sly Creek Reservoir. Along the edge of the road. 1097 Comment
  SEINET10507968  Festuca subuliflora Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA325094  Fragaria vesca subsp. californica M. S. Taylor 1981-4-28 3571 Butte Along Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  CAS-BOT-BC62939  Frangula californica subsp. tomentella Ella Dales Cantelow 1940-10-6 4292 Butte Buck's Lake to Oroville Road. Comment
  UCD112766  Frangula californica subsp. tomentella Joseph M. DiTomaso 1976-5-23 460 Butte peninsula on south end of Lake Oroville. 274 Comment
  CHSC39925  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  CHSC46219  Frangula rubra Pauleen Broyles 1987-5-18 1023 Butte In town of Paradise. Along both sides of bicycle path (old RR bed) in remnant of Yellow Pine Forest. Comment
  POM130462  Frasera albicaulis var. nitida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  JEPS120064  Fraxinus Lowell Ahart, Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the south side of Brig Chico Creek, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC23678  Fraxinus dipetala M. S. Taylor 1976-4-27 1088 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  HSC102799  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte About 8.5 mi. NE of Chico, south part of Upper Bidwell Park; ~0.6 mi. west of Hwy. 32, west side of South Rim Trail 255 Comment
  POM76518  Fraxinus dipetala C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  SBBG126076  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte W side of S Rim Trail, ca 5/8 mi W of Hwy 32, ca 8.5 mi NE of Chico, S part of Upper Bidwell Park 254 Comment
  LA50892  Fraxinus dipetala s.n. Butte between the 14 mi. house and Forest Ranch 731 Comment
  UCD116288  Fremontodendron californicum J. I. Mallory 1967-5-17 286 Butte 1 3/4 miles south-southeast of summit of Bloomer Hill, 10 miles northeast of Oroville. 655 Comment
  CHSC49600  Fritillaria affinis Vernon H. Oswald 1990-1-31 4134 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. 274 Comment
  CHSC49601  Fritillaria affinis Vernon H. Oswald 1990-2-21 4135 Butte Slope below Lower Centerville Canal, ca. 0.5 mi nw of where the canal crosses Humbug (Centerville) Rd. 274 Comment
  CHSC32632  Fritillaria eastwoodiae M. S. Taylor 1981-4-2 3475 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (downhill) of Magalia. 548 Comment
  CHSC36221  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor. 350 Comment
  CAS-BOT-BC124018  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte Near Durham Comment
  NY319697  Fritillaria phaeanthera L. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  RSA31669  Fritillaria pluriflora A. A. Heller 1916-3-5 s.n. Butte Along Hwy 10 miles north of Chico Comment
  CAS-BOT-BC508148  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC54347  Galium aparine Lowell Ahart 1991-4-19 6646 Butte 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
  JEPS98370  Galium aparine Lowell Ahart 2000-6-29 8534 Butte 5 air miles E of Magalia (Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  UC1586559  Galium aparine Lowell Ahart 1991-4-19 6646 Butte steep slope on w side North Honcut Creek (about 1 1/2 mi n and 2 3/4 mi e of Honcut, about 12 mi se of Oroville); Peter Ahart Ranch 45 Comment
  CHSC11822  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  CHSC102984  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and 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. 273 Comment
  CHSC28493  Galium bolanderi M. S. Taylor 1979-7-22 2168 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
  JEPS115530  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and 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 273 Comment
  JEPS26676  Galium bolanderi P. C. Hutchison 1969-6-9 2099 Butte on hwy US Alt. 40 1 mi s (above) Pulga Bridge; canyon of the north fork of the Feather River Comment
  JEPS52658  Galium bolanderi Lauramay T. Dempster 1964-7-24 4048 Butte road above Jonesville 1658 Comment
  SEINET10500694  Galium bolanderi Mary Susan Taylor 1978-7-18 Taylor 1671 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  UCD121842  Galium nuttallii Susan Wagener 1955-4-23 43 Butte 1/2 mile southwest of Compton on road to Durham. Comment
  CHSC117613  Galium parisiense L. P. Janeway 2016-6-2 12109 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  SEINET10869781  Galium parisiense Mary Susan Taylor 1980-5-31 Taylor 2750 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
  CHSC42178  Galium porrigens var. tenue Ellen J. Ramsey 1986-3-18 3 Butte S band of Butte Creek ca. 150 yd WSW of Covered Bridge, ca. 7 mi E of Chico. 91 Comment
  JEPS98579  Galium tricornutum Lowell Ahart 2000-5-13 8353 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 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
  RSA4162  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  UC1523189  Galium triflorum M. S. Taylor and L. Ahart 1981-8-15 4194 Butte n side of Coon Hollow Rd 1.2 mi e jct with Humbug Rd (along creek, ca 12 mi ne of Stirling City); Jonesville SW quad 1676 Comment
  UCD121950  Galium triflorum L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC303384  Gamochaeta ustulata Lowell Ahart 1984-6-10 4688 Butte Along the edge of a new subdivision road about 1 mile SE of Hurleton, 1/12 mile E of the Oak Grove Cemetary, about 10 miles E of Oroville 500 Comment
  LA40341  Garrya fremontii E. B. Copeland; 1932-7-27 667 Butte Jonesville 502 Comment
  CHSC108171  Gastridium phleoides L. P. Janeway 2011-8-18 10666 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  CHSC44924  Gastridium phleoides Lowell Ahart 1988-7-24 6128 Butte On the bottom of a ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  JEPS104033  Gastridium ventricosum Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, ca 1 1/2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 45 Comment
  JEPS110208  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UC463035  Gentiana calycosa E. B. Copeland 1931-8-1 Butte above Abertine; Jonesville 1700 Comment
  CHSC99674  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2006-9-19 4466 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles e of Jonesville, along Humbug Road. In turf of large meadow on Butte Creek. 1767 Comment
  SD3714  Gentianopsis simplex E. B. Copeland 1930-8-2 Butte Jonesville 1500 Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC36812  Gilia capitata subsp. mediomontana L. Ahart 1982-6-4 3555 Butte On a lava cap, 1.5 mi e of Camp 18 and ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC31360  Gilia tricolor Stephen M. Turek 1980-4-14 4 Butte Ca. 2 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
  POM60083  Githopsis pulchella subsp. campestris A. A. Heller, H. E. Brown 1902-5-14 s.n. Butte Berry Canyon (near Clear Creek) Comment
  CHSC12169  Githopsis specularioides Lowell Ahart 1973-5-6 Butte Swedes Flat Road, near Bangor. 457 Comment
  CHSC33153  Githopsis specularioides R. Watts 1974-4-30 29 Butte Found ca. 15 mi ne of Chico on Cohasset Road. Comment
  JEPS120858  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  JEPS110249  Glyceria declinata Lowell Ahart 2006-5-3 12564 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  CHSC41871  Gnaphalium palustre Lowell Ahart 1986-11-9 5450 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  POM222735  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville. Comment
  SEINET10938047  Gnaphalium palustre Mary Susan Taylor 1978-9-9 Taylor 1911 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  SEINET6167158  Goodyera oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC23381  Grevillea banksii 1966-3-31 Butte Comment
  CHSC44189  Grindelia camporum var. camporum Vernon Oswald 1988-6-22 3511 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Rice paddy in the southeast part of the ranch. 53 Comment
  RSA272553  Grindelia nana Porter P. Lowry II 1977-7-5 810 Butte 0.25 mile S of Grand View Cafe on State Hwy 70. Comment
  CHSC35080  Hackelia californica R. Schlising; D. Ikeda, R. Banchero 1980-6-26 3789 Butte 4.0 mi SE of Butte Meadows on Bull Hill Road. 1536 Comment
  CHSC35081  Hackelia californica R. A. Schlising; R. Banchero 1980-7-14 3894 Butte 4.2 mi N of Inskip along Skyway (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). 1511 Comment
  UC426942  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville 1550 Comment
  RSA69248  Hastingsia alba Frank W. Peirson 1926-6-21 6776 Butte Butte Meadow, Humboldt Road. Comment
  CHSC109773  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC306543  Helenium bigelovii A. A. Heller 1928-6-16 14668 Butte At Butte Meadows Comment
  SEINET10891993 Image available Helenium bigelovii R. M. Austin Austin 790 Butte Colby. Comment
  CHSC58887  Helenium puberulum Lowell Ahart 1992-7-23 6824 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  JEPS124277  Helenium puberulum Lowell Ahart 2015-11-18 20660 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CDA13705  Helianthus bolanderi G. F. Hrusa 1997-8-5 14065 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC39360  Heliotropium europaeum L. Ahart 1983-9-17 4426 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  JEPS115652  Heliotropium europaeum Lowell Ahart 2009-8-13 16277 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
  CHSC35660  Helminthotheca echioides R. E. Preston 1982-4-22 248 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC27212  Hemerocallis P. Moyer 1972-6-5 214 Butte S bank Chico Creek, between L. S. and Gus Magnolis Bridge, CSUC campus. 60 Comment
  CHSC46312  Hemizonia congesta subsp. clevelandii Vernon Oswald 1989-5-31 3794 Butte Wurlitzer Unit, Vina Plains Preserve. Near the nw corner of the Unit. 57 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CAS-BOT-BC310133  Hesperevax acaulis Lowell Ahart 1979-4-17 s.n. Butte 2 miles north-west of Bangor. Hill-side ca. 1/4 mile north of Avacado Ave. 150 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
  UC1586396  Heteranthera limosa Lowell Ahart 1991-7-21 6669 Butte in rice field about 1/4 mi w Butte City Highway (w of Rice Experiment Station, about 3 mi w of Hwy 99, n of Biggs) 30 Comment
  UCD139992  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. Comment
  CHSC42894  Heterocodon rariflorum L. P. Janeway 1987-6-13 2204 Butte Along Dogwood Cr, along rd to Mayaro 2.4 mi E of Concow Rd. 990 Comment
  CHSC100485  Heteromeles arbutifolia Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  RSA0072450  Heteromeles arbutifolia L. Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yards south of Ten Mile House Road, Upper Bidwell Park, about 0.5 air mile west of Highway 32, about 10 miles northeast of Chico. 243 Comment
  CHSC116522  Hibiscus lasiocarpos var. occidentalis B. Castro 2012-9-29 1986 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along the park road from its origin at Wildwood Ave. 132 Comment
  CHSC11827  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville. 1600 Comment
  UC1562392  Hieracium argutum Lowell Ahart 1990-7-19 6572 Butte about 5 mi ne Forbestown (on steep road cut at s side of road); Forbestown Reservoir (Dam) 457 Comment
  CHSC38040  Hirschfeldia incana R. E. Preston 1982-12-4 370 Butte At roadside; n side of Ord Ferry Rd at jct with Seven Mile Lane, ca. 7.8 mi ssw of Chico. 36 Comment
  UC924222  Hoita macrostachya H. S. Reed 1939-7-10 295 Butte nw Chico; Sacramento River 57 Comment
  SEINET11892047  Holodiscus boursieri Unknown 1981-1 2931 Butte Near dirt rd. to Forbestown Reservoir. Common 701 Comment
  CHSC85916  Holodiscus discolor L. P. Janeway; Christine Hantelman 2003-7-3 7865 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.8 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. 276 Comment
  CHSC48847  Holodiscus microphyllus var. glabrescens Vernon Oswald 1987-7-13 3111 Butte Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. On the s side of the lake. 1901 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
  CHSC58888  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte On the bottom and sides of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CHSC49553  Hordeum brachyantherum subsp. brachyantherum Vernon Oswald 1984-7-2 1343 Butte Humbug Rd. 1.7 mi s-w of Humbug Summit. In a meadow. 1859 Comment
  CHSC33703  Hordeum depressum L. Ahart 1981-4-6 2744 Butte A little se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  UCD85770  Hordeum marinum subsp. gussoneanum L. Ahart 1982-4-29 3397 Butte Graylodge Wildlife Refuge. Ca. 3/4 miles W of check-in station. Ca. 12 miles SW of Gridley. 35 Comment
  CHSC4320  Hordeum murinum subsp. glaucum M. Hillier 1966-5-29 Butte In creek bed parallel to Manzanita Ave., Chico. Comment
  JEPS46109  Horkelia fusca subsp. tenella Duncan Dunning 1921-7-29 Butte Meadows at Jonesvsille Jonesville Comment
  CHSC30709  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte On edge of Little Bald Rock near creek, ca. 3 mi s of Brush Creek. 1016 Comment
  UCD113566  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte Yellow Pine Forest in openings on edge of Little Bald Rock near creek, ca. 3 mi S of Brush Creek. 1016 Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC65557  Hosackia incana L. P. Janeway 1995-6-20 4804 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC65558  Hosackia stipularis var. ottleyi L. P. Janeway 1995-6-22 4807 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the ridge, at edge of Road 21N25A. 1097 Comment
  CHSC31156  Hydrophyllum occidentale M. S. Taylor 1979-5-4 1997 A Butte Along Millsap Bar Rd in shady road embankment, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC175964  Hypericum Lowell Ahart 1977-6-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC400832  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CAS-BOT-BC400834  Hypericum anagalloides H. F. Copeland 1920-8-12 121 Butte Jonesville 1219 Comment
  CHSC113509  Hypericum anagalloides Lowell Ahart 2014-7-16 19679 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SFV2319  Hypericum anagalloides M. L. Vincent 1960-7-18 105 Butte Sierra Nevada Old Stage Road near Stearns Road, 3 miles south of Paradise. 530 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-BC400826  Hypericum anagalloides Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise. Along the edge of Kunkle Creek 500 Comment
  SBBG128726  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte seeps, SE edge of large open bare granite area, ca. 3.8 mi NE of Little Bald Rock, ca. 2 mi (air) SE of Brush Crk, ca. 15 mi (air) NE of Oroville 974 Comment
  JEPS87158  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  UC426919  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC58922  Hypericum mutilum Lowell Ahart 1992-7-23 6829 Butte Growing on wet soil on the north side of the Termalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  CHSC31958  Hypericum perforatum J. D. Jokerst 1979-7-6 404 A Butte Top of North Table Mt., bottom of dry, vernally moist depression ca. 300 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CAS-BOT-BC401333  Hypericum scouleri H. F. Copeland 1920-7-24 17 Butte Bank of Colby Creek 1828 Comment
  CHSC38364  Hypochaeris glabra Vernon Oswald 1983-3-31 234 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  CHSC42461  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 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
  CHSC45686  Hypochaeris radicata Vernon Oswald 1985-4-29 1728 Butte Bald Rock Rd. 0.3 mi e of Oroville-Quincy Hwy. 640 Comment
  CAS-BOT-BC133513  Iris Lowell Ahart 1980-5-29 2360 Butte 2 1/2 mi. north-east of Mountain House, about 50 m. E of the Oroville Quincy Highway 1100 Comment
  CAS-BOT-BC133557  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22528 Butte 3 mi. SE. from turn-off, Hwy. 32 to De Sabla 670 Comment
  CHSC24886  Iris macrosiphon W. A. Vaccaro 1976-4-17 2 Butte Pop. ca. 2.4 mi. E. of Centerville on So. side of Humbug Rd. 128 Comment
  JEPS120115  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10469754  Iris macrosiphon Mary Susan Taylor 1980-3-1 Taylor 2344 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  UCD138813  Iris tenuissima T. M. Lane 1975-4-27 11 Butte Cohasset Hwy, 0.8 mile north of junction with Rock Creek Road. 9.5 miles north of Chico. Comment
  CHSC11963  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CAS-BOT-BC69901  Isoetes howellii Lowell Ahart 1980-4-19 2089 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC69949  Isoetes howellii Lowell Ahart 1975-4-7 s.n. Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC31520  Isoetes howellii L. Ahart 1978-4-21 1662 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC58863  Isoetes nuttallii Lowell Ahart 1992-7-21 6814 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS98371  Isoetes nuttallii Lowell Ahart 2000-6-29 8545 Butte 5 air miles E of Magalia (SW part of Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CAS-BOT-BC112388  Isolepis carinata Lowell Ahart 1983-6-12 4048 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, 425 Comment
  CAS-BOT-BC112446  Isolepis cernua Lowell Ahart 1988-5-29 6013 Butte Ca. 1/10 mi NE of the old barn, ca. 1/2 mi NE of the Honcut Cemetery, Joie Osgood Ranch 60 Comment
  CHSC84205  Isolepis setacea Lowell Ahart 2003-6-30 10337 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
  JEPS98569  Isolepis setacea Lowell Ahart 2000-6-6 8454 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC29991  Jensia rammii L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC109892  Juncus Lowell Ahart 1981-7-24 2999 Butte Sierra Nevada. About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CHSC31841  Juncus acuminatus L. Ahart 1975-6-19 797 Butte Along edge of North Honcut Creek. Peter Ahart Ranch,Honcut. 50 Comment
  RSA742780  Juncus acuminatus L. Ahart 2008-5-30 14802 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10.5 miles (air) northeast of Oroville. Comment
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May 4 2010
  SEINET11787691  Juncus bufonius J. D. Jokerst 1982-1 1539 Butte Grey Lodge N of and adjacent to Rutheford Rd. ca 100 m W of Pennington Rd Comment
  CHSC31840  Juncus bufonius var. bufonius Lowell Ahart 1973-5-24 223 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31925  Juncus bufonius var. bufonius J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 840 Butte 0.1 mi W of junction of Skyway and Humboldt Rd., N of and adjacent to the latter. Comment
  CHSC50695  Juncus bufonius var. bufonius Lowell Ahart 1990-5-25 6484 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. 243 Comment
  CHSC103724  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
  CHSC44523  Juncus bufonius var. congestus Lowell Ahart 1988-5-15 6005 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  UC1594673  Juncus covillei var. obtusatus Lowell Ahart 1992-7-27 6863 Butte about 2 mi nw of Four Trees (about 2 mi ne of Coyote Gap, about 2 mi w of the Oroville-Quincy Highway, along Wildcat Creek); Wildcat Creek 1219 Comment
  JEPS120831  Juncus cyperoides Lowell Ahart 2013-7-1 18820 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, 3.5 air miles SW of Forbestown. Comment
  RSA726658  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14301 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  CHSC107583  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
  CHSC49613  Juncus ensifolius Vernon Oswald 1987-6-23 3016 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a ditch beside the road. 1920 Comment
  RSA742781  Juncus ensifolius L. Ahart 2008-7-23 15142 Butte 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 1/4 mile west of the Ponderosa Dam. 258 Comment
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Feb 2 2010
  UC1562429  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte about 0.12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  CHSC61348  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-7-29 7120 Butte About 2 1/2 miles northeast of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  CHSC32585  Juncus kelloggii L. Ahart 1980-5-11 2240 Butte In a pasture field on the w side of the Pentz-Magalia Hwy, ca. 1/2 mi nw of Kunkle Reservoir, ca. 3 mi s of Paradise. 500 Comment
  JEPS98682  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte 5 mi(air)E of Oroville Dam (in tire ruts, bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC47559  Juncus leiospermus Lowell Ahart 1979-5-7 1857 Butte Near a large lava rock with Indian Mills in it, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC103732  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 375 Comment
  CHSC113242  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 392 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
  JEPS122224  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19390 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  RSA337381  Juncus leiospermus var. leiospermus L. Ahart 1984-5-7 4589 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  RSA712857  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12584 Butte About 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 397 Comment
  JEPS110170  Juncus nevadensis Lowell Ahart 2006-8-15 13179 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
  CHSC96882  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill. 656 Comment
  CDA39186  Juncus occidentalis G. D. Barbe, T. C. Fuller 1982-6-14 3679 Butte Black Bart Road, 1.25 miles west of Forbestown Road. Comment
  CHSC39361  Juncus orthophyllus L. Ahart 1983-9-17 4427 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC78339  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  JEPS116086  Juncus patens Lowell Ahart 2009-5-30 15779 Butte On dry soil, broad open drainage on oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  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
  CHSC39682  Juncus tenuis Lowell Ahart 1983-6-21 4103 Butte Found along the edge of Bloomer Hill Road, about 3 miles northwest of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  JEPS113860  Juncus tenuis Lowell Ahart 2007-7-11 14293 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
  JEPS116053  Juncus tenuis Lowell Ahart 2009-6-18 15910 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcutt Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC30358  Juncus triformis James D. Jokerst 1980-6-14 830 Butte Big Bald Rock, N of Lake Oroville, E of town of Berry Creek. Comment
  JEPS113275  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  CHSC96888  Juncus trilocularis Lowell Ahart 2007-6-12 14077 Butte Along a small dry wash, about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  UCD168846  Juncus trilocularis Peter. F. Zika 2011-7-6 25540 Butte Northern Sierra Nevada Highlands (n SNH). Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill. 830 Comment
  UC1495745  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte about 2 mi n and 0.5 mi e Honcut (Peter Ahart Ranch) 50 Comment
  CHSC96956  Juncus usitatus Lowell Ahart 2007-7-11 14292 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
  CHSC97203  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  JEPS87130  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte ca. 2 mi. w. Oroville Dam (near Longs Bar Monument, n. side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
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Nov 1 2009
  RSA726657  Juncus usitatus L. Ahart 2007-7-5 14250 Butte Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 23 Comment
  SEINET10531628  Juniperus californica Lowell Ahart 1983-4-10 Ahart 3922 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  POM202704  Keckiella breviflora subsp. glabrisepala J. H. Morrison s.n. Butte Durham. Comment
  RSA754854  Keckiella breviflora subsp. glabrisepala L. Ahart 2009-4-26 15610 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC101700  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
  RSA293267  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada. Immediately along the Feather River, 2.9 miles south of the Plumas Co line. [Along CA 70.] 550 Comment
  SEINET12765113  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table mountain, about 8 miles (air) northeast of Stirling City.; 0 1372 Comment
  RSA4161  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  HSC102772  Koeleria gerardi J. P. Smith 2014-4-30 13838 Butte Along State Route 32. 389 Comment
  CHSC43864  Kumlienia hystricula Vernon Oswald 1988-3-20 3260 Butte Centerville flume upstream from Humbug Rd. at the s end of the tunnel. 353 Comment
  CHSC113443  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 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
  CHSC11828  Kyhosia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville. 1500 Comment
  CHSC365  Lactuca serriola D. Bower 1953-8-13 Butte 3A Llano Seco. Rice field. 30 Comment
  JEPS120051  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. Comment
  CHSC30751  Lagophylla glandulosa M. S. Taylor 1980-8-30 3322 Butte Along creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CAS-BOT-BC341322  Lagophylla glandulosa C. B. Wolf; E. R. Johnson 1934-10-5 6159 Butte 11 mi. from Oroville on rd. to Paradise, Sacramento Valley 152 Comment
  SEINET10474762  Lagophylla glandulosa Mary Susan Taylor 1977-8-16 Taylor 1438 Butte Abundant on both sides of Williams Road, N of its junction with Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CAS-BOT-BC337908  Lasthenia californica H. F. Copeland 1929-5-4 s.n. Butte Canyon of Chico Creek Comment
  SEINET11806710  Lasthenia fremontii Unknown 1984-1 12 Butte ca 12 mi NW of Chico at jct of Broyles Rd & Hwy 99, on W side of Hwy 99 61 Comment
  CHSC35629  Lasthenia platycarpha R. E. Preston 1982-3-22 196 B Butte Ca. 50 ft e of Hwy 149, ca. 3/4 mi e of Hwy 99, ca. 10.5 mi nw of Oroville. 60 Comment
  JEPS117244  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 air miles northeast of Oroville 264 Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  CAS-BOT-BC213293  Lathyrus sulphureus Mrs. C. C. Bruce 1898-5-1 2446 Butte Paradise Comment
  CAS-BOT-BC213295  Lathyrus sulphureus J. H. Morrison 1939-5-8 s.n. Butte Durham 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
  JEPS113199  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir 484 Comment
  JEPS117883  Lathyrus tingitanus L. P. Janeway 2008-4-2 9243 Butte Oroville along high flat bank on east side of Feather River between Thermalito Diversion Dam and the Fish Barrier Dam Northern Sierra Nevada Foothills 65 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
  CAS-BOT-BC321778  Layia fremontii E. B. Copeland 1903-4-11 s.n., distributed as Baker's 3039 Butte Chico Comment
  CHSC29007  Layia fremontii M. S. Taylor 1980-3-28 2409 Butte Around vernal pools, just e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  POM183412  Layia fremontii L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CAS-BOT-BC321760  Layia fremontii Ira L. Wiggins 1925-3-25 1406 Butte 3.5 mi. E of Durham on States Land Colony Highway. Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
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May 24 2013
  CHSC103707  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-1 16755 Butte On the south side of the 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
  CHSC44373  Leontodon saxatilis subsp. longirostris Lowell Ahart 1988-6-23 6064 Butte Meadow, north of Forbestown Road, about 1 1/2 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC50651  Leontodon saxatilis subsp. longirostris Lowell Ahart 1990-5-25 6494 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Area, about 1 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC38374  Leontodon saxatilis subsp. saxatilis Vernon Oswald 1983-4-25 378 Butte Upper Bidwell Park, Chico, on the north rim at the head of the east intermittent stream feeding into Sycamore Creek. 365 Comment
  CAS-BOT-BC215736  Lepechinia calycina Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  JEPS124201  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  CAS-BOT-BC89699  Lepidium latifolium Lowell Ahart 1981-9-10 3143 Butte Gray Lodge, southwest of Gridley. 35 Comment
  CHSC34532  Lepidium nitidum R. E. Preston 1982-2-18 170 Butte Slope above s bank of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 182 Comment
  UC203609  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte 8 mi n Oroville (near w base of Table Mountain) Comment
  POM144018  Lepidium nitidum C. C. Bruce 1897-05 19454 Butte [No locality information provided] Comment
  RSA299474  Lepidium nitidum James Payne Smith 1973-3-22 5910 Butte Along State Route 149 just N of jct with US 70. Comment
  JEPS88261  Leptochloa fascicularis Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 .1 Butte Sanctuary II Sacramento River National Wildlife Refuge, Llano Seco Unit (seasonal marsh on s side of Tract 1.1, US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River) 33 Comment
  CHSC2157  Leptochloa fusca subsp. fascicularis Don Bower 1923-7-16 Butte 3A Llano Seco. 30 Comment
  CHSC45450  Leptosiphon acicularis Lowell Ahart 1979-4-22 1834 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
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Jul 19 2018
  CHSC45451  Leptosiphon androsaceus Lowell Ahart 1979-4-3 1820 Butte On slope near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC29230  Leptosiphon bicolor M. S. Taylor 1980-4-16 2491 Butte Lake Oroville State Recreation Area, Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC34990  Leptosiphon bolanderi R. A. Schlising 1981-4-7 4019 Butte NE of Chico and S of Forest Ranch; 2.1 mi N of jct with Humboldt Road, along Hwy 32. Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 Comment
  CHSC116163  Leptosiphon ciliatus Lowell Ahart 2015-6-16 20236 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC94279  Leptosiphon harknessii Lowell Ahart 2006-7-16 13008 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
  CDA8195  Lessingia nana T. C. Fuller 1963-7-15 10855 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  CHSC89484  Lessingia nemaclada Jenny Marr 1994-7-6 215 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  JEPS120560  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  OBI4876  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi W of Oroville 46 Comment
  CHSC106598  Ligustrum sinense L. P. Janeway; B. Castro 2010-6-4 9993 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. 75 Comment
  JEPS117406  Lilaea scilloides Lowell Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 375 Comment
  CAS-BOT-BC509478  Lilium kelleyanum H. F. Copeland 1920-8-29 152 Butte Jonesville Woods 1219 Comment
  CHSC50980  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-19 1083 Butte Ca 2.6 km e. of the crossing of Coon Hollow Road at Coon Hollow Creek (W. Branch Feather R.). Comment
  UCD116446  Limnanthes R. T. Riding 1968-4-13 24 Butte North Table Mountain. 396 Comment
  CHSC23668  Limnanthes alba M. S. Taylor 1976-4-27 1094 Butte On n side of Ponderosa Way, ca. 6 mi e of junc of Ponderosa Way and Cohasset Hwy, ca. 23 mi ne of Chico. On road embankment. 609 Comment
  UCR188703  Limnanthes alba 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
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  UCR224690  Limnanthes alba subsp. alba Dena Grossenbacher, Joel Smith 2009-5-9 986 Butte On south shore of Wyandotte Lake along Forbes Town Road, 2.0 miles east of Hwy 62 427 Comment
  SD8681  Limnanthes alba subsp. alba Mrs. R. M. Austin 1883-1 Butte Comment
  UCD169373  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 s.n. Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC83986  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  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
  CHSC24768  Limnanthes douglasii subsp. rosea P. J. Welch 1976-4-12 9 Butte At edge of vernal pool ca. 0.3 mi n of the Skyway and ca. 25 yds e of Notre Dame Blvd., within Chico city limits (se corner). 60 Comment
  CHSC52408  Limnanthes douglasii subsp. rosea John Copeland 1980-2-20 10 Butte Bordering vernal pool, 55 ft NE of locked gate, 0.5 mi E of Meridian Rd, 1.5 mi N of hwy 99N, 5.2 mi N of Chico. Comment
  CHSC54010  Limnanthes floccosa subsp. californica Vernon H. Oswald 1991-3-30 4476 Butte Hwy 149, 0.9 mi northwest of Hwy 70 at Wicks Corner, ca. 7 mi northwest of Oroville. In drainage on top of road cut on the south side of the highway. 80 Comment
  CHSC72401  Limnophila X ludoviciana Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9674 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  CHSC114380  Limnophila X ludoviciana Cass 2012-10-31 Butte Nelson; Aguas Frias Road and Nelson Road. Comment
  CHSC40393  Limosella acaulis Lowell Ahart 1985-4-20 4876 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  SEINET10548868  Limosella acaulis Lowell Ahart 1985-4-20 Ahart 4876 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10496786  Linanthus bakeri Mary Susan Taylor 1980-5-31 Taylor 2760 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
  SD7464  Linanthus dichotomus Mrs. R. M. Austin 1883-1 Butte Butter Co., Calif Comment
  JEPS87152  Linanthus harknessii Lowell Ahart 1992-7-29 6887 Butte about 0.75 mi nw Lotts Lake (near Coon Hollow Creek, about 1 mi ne of the Carr Mine) 1798 Comment
  SD4004  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville, Mountain top west of the Summit Comment
  CHSC42966  Lindernia dubia var. anagallidea Lowell Ahart 1987-7-3 5780 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC109513  Linum lewisii T. S. Brandegee 1902-6-28 Butte Jonesville Comment
  CHSC97417  Lipocarpha micrantha Robert Fischer 2006-6-18 1021 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC65525  Listera convallarioides L. P. Janeway 1995-8-5 4890 Butte Along West Branch Feather River about 0.1 mi above Snag Lake. 1725 Comment
  CHSC29226  Lithophragma bolanderi M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2445 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC4658  Lithophragma bolanderi R. Carter 1966-4-11 331 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R. R. tracks on S side of river; growing on rocky slope on E side of bridge over s. Fork of Feather R. Comment
  CHSC60587  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1993-4-19 5276 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. Near the trailhead on Jordan Hill Rd. 707 Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  CAS-BOT-BC438122  Lithophragma parviflorum Gladys Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CHSC29225  Lithophragma parviflorum var. trifoliatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2435 Butte SE corner of jct of Rcky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Banger Hwy, ca. 10 mi s of Oroville. 365 Comment
  CHSC38675  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 181 Butte Upper Bidwell Park Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC51919  Lithophragma tenellum L. P. Janeway; R. A. Schlising 1988-7-1 2910 Butte On the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  CHSC2363  Lithospermum californicum R. Carter 1965-5-1 194 Butte Found on Bean Creek Rd., 2 mi. SE of intersection with Bald Rock Rd., on E bank above road. 1005 Comment
  CAS-BOT-BC317348  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville, above hotel 1676 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
  CHSC26713  Logfia gallica M. P. Hayes 1978-4-7 152 Butte On top of ne butte on Butte College campus at the corner of Pentz and Clark roads. 170 Comment
  CHSC101799  Lolium multiflorum Lowell Ahart 2009-5-8 15669 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC6662  Lolium multiflorum Marilyn Lee 1968-3-15 112 Butte East side of Cohasset Road, 100 yards north of entrance to Chico Airport. Comment
  RSA754796  Lolium perenne subsp. multiflorum L. Ahart 2009-5-8 15669 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC8241  Lolium temulentum J. G. Moore 1969-5-7 38 Butte Cohasset Rd., 3 mi. e of Rock Creek Rd. on s side of road. 106 Comment
  CHSC29765  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-5-24 2742 Butte Along Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 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
  CHSC31068  Lomatium marginatum M. S. Taylor 1980-3-8 2371 Butte On shady trail ca. 100ft sw of Pulga bridge over hwy 70 at Feather River, ca. 28 mi ne of Oroville. 487 Comment
  CHSC42623  Lomatium marginatum var. marginatum Vernon Oswald 1985-6-15 1835 Butte Black Bart Rd. ca. 1 mi se of Lampkin Rd. 640 Comment
  JEPS110244  Lomatium marginatum var. marginatum Lowell Ahart 2006-5-8 12606 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC33347  Lomatium utriculatum Laurel L. Huey 1980-4-21 4 Butte Ca. 80 m se of Butte Creek at Covered Bridge. 125 Comment
  CAS-BOT-BC240451  Lonicera hispidula Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  POM46731  Lonicera interrupta A. A. Heller, H. E. Brown 1902-5-14 5551 Butte Berry Canyon (near Clear Creek) Comment
  RSA592528  Lonicera interrupta S. O. Mattoon 1970-6-12 19 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC115434  Lonicera japonica Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  SEINET10970287  Lotus Mary Susan Taylor 1982-6-24 Taylor 4734 A Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  SEINET10451957  Lotus argophyllus var. fremontii Mary Susan Taylor 1981-5-7 Taylor 3628 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  UC726746  Lotus argophyllus var. fremontii A. A. Heller 1940-6-5 15699 Butte between the bridge and mouth of the West Branch of the North Fork (along Feather River); Feather River Comment
  JEPS88599  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1996-5-27 7671 Butte U.S. Fish and Wildlife Service parcel betw Seven Mile Lane and Sacramento River (in the s paddock of Tract 7, Santuary II, Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  SEINET10452685  Lotus grandiflorus var. macranthus Lowell Ahart 1985-5-15 Ahart 4982 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  CDA31940  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET5736943 Image available Lotus micranthus Lowell Ahart 1985-1 5033 Butte Lake Oroville, 0.125 mile E of Enterprise Launch Area and about 0.5 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  CDA13319  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada; on USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  POM276705  Lotus oblongifolius Lyman Benson 3967 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  SEINET10452004  Lotus purshianus Mary Susan Taylor 1978-7-18 Taylor 1689 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  JEPS103533  Lotus purshianus var. purshianus Lowell Ahart 2002-6-21 9750 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  UC862223  Lotus purshianus var. purshianus A. A. Heller 1917-7-26 12826 Butte Butte Meadows 1402 Comment
  UC862230  Lotus purshianus var. purshianus A. A. Heller 1916-9-8 12651 Butte e of Chico (Ten-Mile House) Comment
  UC1562369  Lotus scoparius Lowell Ahart 1990-5-21 6474 Butte 4.5 mi sw Oroville (0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  SEINET2062321 Image available Lotus unifoliolatus Marc Mittleman 1980-8-1 225 Butte L:ittle Chico Creek, adjacent to China Garden Springs. 262 Comment
  CHSC112875  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  SD243397  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 PDR 1373328 Butte South-southwest of Richvale. Rice field. Comment
  CHSC33524  Ludwigia palustris R. A. Schlising 1981-7-11 4133 Butte NE of Oroville and NW of Brush Creek, near French Creek Road crossing of French Creek. 613 Comment
  CHSC42106  Ludwigia palustris Lowell Ahart 1986-11-14 5470 Butte On the margins 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
  CHSC46294  Ludwigia palustris Vernon Oswald 1989-5-30 3792 Butte Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. On the margin of the lake. 54 Comment
  JEPS115647  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
  NY16037  Lupinus A. A. Heller 1914-3-26 11227 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  SEINET10874088  Lupinus albicaulis Mary Susan Taylor 1982-6-24 Taylor 4747 Butte T22N R4E se/se sec 1. Pulga quad. On serpentine on Rocky Ridge, both sides of Ponderosa Way (Rim Rd), 6.1 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2700 ft. 823 Comment
  CHSC33710  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-21 1334 Butte Along side of road. Ca 100 m NE of Dogwood Creek on Pulga Rd. Comment
  CHSC93080  Lupinus albifrons var. albifrons L. P. Janeway; B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1051 Comment
  CAS-BOT-BC201354  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49117 Butte Cherokee Comment
  CAS-BOT-BC196245  Lupinus albifrons var. eminens A. A. Heller 1902-5-16 14340 Butte East Butte, Marysville Buttes, in the Sacramento Valley Comment
  SEINET5766820 Image available Lupinus albifrons var. eminens A. A. Heller 1913-1 10764 Butte 8 mi N of Oroville 183 Comment
  UC392199  Lupinus arbustus E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  UC726014  Lupinus bicolor A. A. Heller 1940-4-28 15562 Butte opposite the golf links e Chico; e of Chico Comment
  HSC32640  Lupinus bicolor Dave Knorr 1974-4-20 130 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  UCD107191  Lupinus bicolor A. A. Heller 1914-2-2 11166 Butte Canon hf Big Chico creek 6 miles east of Chico. Comment
  CHSC48527  Lupinus bicolor var. tridentatus Vernon Oswald 1987-4-28 2349 Butte Rim Rd. (Ponderosa Way) 3.6 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  SEINET10485237  Lupinus densiflorus var. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20n r3e ne1/4ne1/4 sec 22. Oroville quad. Nw corner of jct of hwy 70 with Hwy 149, at wicks corner, ca 4 mi. N of oroville. Assoc: trifolium hirtum. 91 Comment
  UC1562278  Lupinus lepidus var. confertus Lowell Ahart 1990-7-22 6576 Butte on the w side of Concow Road Concow 640 Comment
  CHSC34685  Lupinus microcarpus var. densiflorus M. S. Taylor 1981-5-1 3589 A Butte NW corner of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 mi n of Oroville. 91 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  CDA27536  Lupinus microcarpus var. microcarpus T. C. Fuller 1958-4-15 5005 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  RSA0072103  Lupinus nanus Daisie Huang 2006-4-15 06041567 Butte Upper Bidwell Park, Horseshoe Lake. 114 Comment
  SEINET8057003  Lupinus nanus M. J. Williams 1967-4-22 s.n. Butte Table Mt., Cherokee Road near Oroville 610 Comment
  UCSB63593  Lupinus nanus Hill, Leonard 1991-3-6 Butte Upper Bidwell Park, Chico; from Manzanita Ave., E 4 mi. on Wildwood Ave., S of road, near cliff edge 106 Comment
  CHSC3935  Lupinus nanus var. apricus J. Senter 1967-4-10 17 Butte Located on Skyway turnout 4.5 mi. E. of Hwy. 99E. 396 Comment
  CAS-BOT-BC322113  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  CHSC86539  Lupinus nanus var. vallicola L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7800 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
  CHSC109091  Lupinus pachylobus Lowell Ahart 2012-4-20 17890 Butte North edge of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 202 Comment
  CHSC94029  Lupinus pachylobus R. D. Fischer 2005-4-9 733 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on roadbed of the main Overlook Trail in old refuse pile. 487 Comment
  CHSC31811  Lupinus polycarpus L. Ahart 1978-5-1 1686 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10452664  Lupinus stiversii Mary Susan Taylor 1980-5-27 Taylor 2670 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
  UC726747  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte along the highway to Hamilton City 6 mi w Chico; w of Chico Comment
  SEINET10452165  Lupinus vallicola Mary Susan Taylor, L. Hanson 1981-4-30 Taylor 3572 Butte T19N R5E ne sec 13, Forbestown quad. NW corner of jct of Forbestown Rd and Lumpkin Rd (Feather Falls turnoff), ca. 10 air mi E of Oroville. 1800 ft. 549 Comment
  CHSC105670  Luzula cascadensis Lowell Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC105797  Luzula cascadensis Lowell Ahart 2010-9-28 17260 Butte West edge of a 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  UC1594536  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir 1676 Comment
  RSA712826  Luzula comosa L. Ahart 2006-4-28 12547 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SEINET10472472  Luzula comosa Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3398 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  SEINET10472473  Luzula comosa Mary Susan Taylor 1981-4-8 Taylor 3514 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC113961  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte Disturbed dry meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) wast of Philbrook Reservoir. 1664 Comment
  CHSC109587  Luzula macrantha Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northweat of Chico. 237 Comment
  CAS-BOT-BC441204  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Near Hurleton 600 Comment
  CHSC752  Lycopus americanus V. Holt; M. Underhill 1952-7-9 Butte Dodge Lands. 56 Comment
  CHSC28802  Lythrum hyssopifolia J. D. Jokerst 1979-7-6 404 Butte Top of north Table Mt, ca. 100 m north of Cherokee Rd. +/- nw of intersection of Cherokee Rd. Comment
  CHSC112659  Lythrum portula Lowell Ahart 2013-10-16 19112 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CHSC47443  Lythrum portula Lowell Ahart 1979-5-25 1889 Butte West of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  CDA18958  Lythrum salicaria R. Hill, Lee Pejas 2000-6-16 PDR 1170812 Butte on Hwy 99 at Dry Creek crossing. 0 Comment
  CHSC31886  Maclura pomifera L. Ahart 1976-5-21 1114 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS98925  Madia citrigracilis Bruce G. Baldwin, Vern Oswald 1988-6-16 716 Butte along Camp Creek Road, near Pulga 512 Comment
  JEPS98931  Madia citriodora Bruce G. Baldwin, Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, S side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342718  Madia elegans Mrs. C. C. Bruce 1897-4-1 1986 Butte Forest - Ranch Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  SEINET10938055  Madia elegans subsp. densifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4116 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC34707  Madia elegans subsp. vernalis M. S. Taylor 1981-5-22 3800 A Butte Around a landing, ridge n of Flea Valley Creek drainage, n of Pulga, ca. 5 air mi e of Magalia. 1005 Comment
  CHSC35670  Madia elegans subsp. vernalis R. E. Preston 1982-4-22 262 Butte Ca. 0.3 mi e of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. (In dirt road). 335 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC40481  Madia exigua Lowell Ahart 1985-5-15 4986 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC42460  Madia exigua Lowell Ahart 1987-5-9 5592 Butte Along Pulga Road, about 1/4 mile westa of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC25449  Madia glomerata Marc Hayes; Warner 1977-9-11 70 Butte Along road to Butte Meadows, exactly 5.8 mi from the turn to Butte Meadows on Hwy 32 onto Humboldt Road. 1127 Comment
  CHSC48179  Madia gracilis Vernon Oswald 1985-5-28 1787 Butte Oroville-Quincy Hwy at the first pull-out on the e side of the road 0.8 mi n of Bidwell Bar Bridge. 320 Comment
  UC436296  Madia gracilis E. B. Copeland 1930-7-24 186 Butte Jonesville 1500 Comment
  JEPS98930  Madia subspicata Bruce G. Baldwin, Gerald D. Carr, Lowell Ahart 1988-6-9 713 Butte 1 mi N, 3 mi E of Honcut (Peter Ahart Ranch, above North Honcut Creek) Comment
  SEINET12050643  Maianthemum racemosum subsp. amplexicaule Unknown 1986-1 993 Butte ca 0.3 mi N of road jct below Humboldt Peak, extreme N of county, near Scotts John Creek Comment
  RSA700214  Malacothrix floccifera L. Ahart 2004-6-22 11113 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
  UC572335  Malacothrix floccifera P. L. Johannsen 1936-7-22 962 Butte 1.5 mi sw Head of Bottle Creek; Lassen National Forest, Paynes Creek Quad. 1432 Comment
  SEINET10479995  Malva nicaeensis Mary Susan Taylor 1982-4-28 Taylor 4360 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC573  Marah fabacea var. agrestis S. Ptomey 1929-4-1 Butte Bidwell Park. 60 Comment
  CHSC21258  Marah watsonii M. S. Taylor 1973-4-23 21 Butte 1/2 mi e of Cohasset Rd, ca. 7 mi ne of Chico Airport. Comment
  CHSC52032  Marrubium vulgare B. Castro 1988-4-21 259 Butte At edge of Chico Cyn Rd just past hairpin turn where road turns away from Big Chico Ck and passes pistachio orchard at base of ridge. Naturalized fairly frequently along this strip on both sides of Big Chico Ck. on the e side of Chico. 91 Comment
  JEPS115835  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC12135  Marsilea vestita B. A. Jenkins 1972-5-1 2 Butte 75 yds se of Humboldt Road-Fir Street Junction, Chico. Comment
  CHSC36305  Matricaria discoidea M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CAS-BOT-BC348266  Matricaria occidentalis Lowell Ahart 1982-4-29 3392 Butte A little west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC422642  Meconella californica Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  UC865635  Medicago arabica A. A. Heller 1915-5-2 11864 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CDA42874  Medicago lupulina L. Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  SEINET12155162  Medicago orbicularis P. L. Ricker 1912-1 3958 Butte Chico Comment
  SEINET12155163  Medicago orbicularis P. L. Ricker 1912-1 3941 Butte Chico Comment
  CHSC103684  Medicago polymorpha Lowell Ahart 2010-4-30 16589 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC945  Medicago polymorpha A. Koopman 1929-3-5 Butte CSC Campus. 57 Comment
  JEPS122207  Medicago polymorpha Lowell Ahart 2014-4-25 19406 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  UC1010738  Medicago praecox Peter H. Raven 1954-4-17 6615 Butte Feather River, Oroville Feather River; , Oroville Comment
  CAS-BOT-BC271132  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CAS-BOT-BC271134  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CHSC46883  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi s of Lomo (2.3 mi s of ford over Cedar Creek). 1219 Comment
  UC600750  Melica aristata H. F. Copeland 1932-7-19 Butte Jonesville Butte Creek Canyon (Butte Creek Canyon) 1550 Comment
  HSC23498  Melica californica S. Armantrout 1969-5-2 24 Butte Cohasset Hwy., 0.5 mi. W of Rock Creek Rd. Comment
  CHSC30539  Melica californica var. nevadensis J. D. Jokerst 1980-4-17 584 Butte Top of North Table Mt, N edge of Mt. 472 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  RSA700278  Melica subulata L. Ahart 2004-7-23 11300 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River. About 1.5 miles (air) southeast of Butte Meadows. 1457 Comment
  UCD88607  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1500 Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  JEPS110218  Melica torreyana Lowell Ahart 2006-5-19 12632 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CHSC107573  Melilotus indicus Lowell Ahart 2011-8-17 17620 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  POM26602  Melilotus indicus C. C. Bruce 1898-05 1850 Butte Butte Creek. Comment
  CDA5721  Melissa officinalis L. Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Fall. Comment
  CHSC110327  Mentha arvensis B. Castro; Margie Graham 2006-8-25 1608 Butte Sacramento Valley. Ca 3 mi W of Highway 99 and 2 mi S of Richvale and ca 250 ft N of Hwy 162 in Cherokee Canal.. On E side of canal abt 120 ft in from toe of E levee. 29 Comment
  CHSC20720  Mentha canadensis M. S. Taylor 1975-8-31 885 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  JEPS87131  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  CHSC102979  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico. 68 Comment
  UC398935  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte along Butte Creek; Jonseville 1550 Comment
  UC872394  Mentzelia dispersa A. A. Heller 1917-7-26 12851 Butte Butte Meadows 1402 Comment
  UC177575  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  SD6717  Mertensia sibirica Mrs. R. M. Austin 1882-1 Butte Comment
  CAS-BOT-BC428754  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap 350 Comment
  CAS-BOT-BC428761  Micranthes californica A. A. Heller 1919-3-25 13098 Butte Canon [Canyon] of Chico Creek Comment
  CHSC108867  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte Near large rocks, on the west side of South Rim Trail, about 1/2 miles southwest of the old homestead, pond and Ten Mile House Road, about 3/4 miles west of Highway 32, about 8 miles northeast of Chico. 255 Comment
  CHSC1678  Micranthes integrifolia V. Holt 1935-3-30 Butte Chico Creek ridge. 304 Comment
  CHSC58955  Micranthes odontoloma Lowell Ahart 1992-7-26 6852 Butte On the edges of a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CAS-BOT-BC429202  Micranthes oregana A. A. Heller 1914-6-22 11493 Butte Chico Meadows 1219 Comment
  POM225969  Micropus californicus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC392  Micropus californicus var. californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  HSC68241  Micropus californicus var. californicus J. P. Smith, J. O. Sawyer 1973-4-14 6045 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  RSA725057  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC348697  Microseris acuminata Lowell Ahart 1980-5-4 2172 Butte Thermalito 65 Comment
  CHSC109086  Microseris acuminata Lowell Ahart 2012-4-20 17900 Butte Area along an old trail, 20 feet east of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. 243 Comment
  CHSC103689  Microsteris gracilis Lowell Ahart 2010-4-30 16599 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  SEINET10837198  Microsteris gracilis Mary Susan Taylor 1975-3-10 Taylor 409 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  UCSB44169  Mimulus angustatus Reisentz, Paul 1979-5-13 Butte 4 miles West on Cherokee Road from Highway 70 at Cherokee Point Comment
  UC518026  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1933-5-26 33186 Butte 5 mi e Oroville; Feather River canyon 152 Comment
  SEINET10830523  Mimulus cardinalis Mary Susan Taylor 1975-6-25 Taylor 798 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  SEINET12334058  Mimulus douglasii S. C. Joslin 1978-1 10 Butte ca 6 mi NE of Oroville on Table Mountain 457 Comment
  POM43712  Mimulus glaucescens C. C. Bruce 1897-02 2106 Butte Little Chico. Comment
  SFV3381  Mimulus glaucescens B. Fuller 1962-5-26 Butte Sierra Nevada Paradise. Lot 55, Harrison Road. 520 Comment
  UC1303145  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte about 5 mi from Paradise (near the Neale grade) Comment
  UCD96096  Mimulus glaucescens Dena Grossenbacher; Brian Green 2008-5-3 814 Butte Along Bardees Bar Road about 0.1 miles from Bardees Bar. 371 Comment
  SEINET8390054  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  UC65831  Mimulus kelloggii A. A. Heller 1902-5-6 5464 Butte Clear Creek P.O. Clear Creek Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 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
  RSA4114  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  JEPS121901  Mimulus primuloides var. primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC1552175  Mimulus torreyi Barbara Ertter 1988-6-19 7647 Butte ca 1/2 mi sw Jonesville (on road to Butte Meadows, n tip of Butte Co.) 1524 Comment
  UC175540  Mimulus torreyi A. A. Heller 1913-6-7 10799 Butte near Stirling 1074 Comment
  CAS-BOT-BC174592  Minuartia californica John Thomas Howell; Gordon H. True 1967-5-7 42180 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CHSC4074  Minuartia californica H. E. Lindahl 1967-3-25 15 Butte Ca 40 ft. s of intersection of Durham-Oroville highway and Chico-Oroville highway. 60 Comment
  CHSC65195  Minuartia cismontana Lowell Ahart 1995-5-30 7588 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC103671  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC103963  Minuartia douglasii Lowell Ahart 2010-5-7 16623 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  RSA424440  Minuartia douglasii Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -11 Butte Magalia, near Skyline road to Paradise 640 Comment
  CHSC31521  Mollugo verticillata L. Ahart 1972-5-8 98 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC196297  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  POM252836  Monardella lanceolata var. lanceolata A. A. Heller 1938-7-2 15244 Butte West of Arch Rock Tunnel on Feather River Hwy. Comment
  UC2035806  Monardella odoratissima subsp. glauca H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  CHSC11987  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville. 1550 Comment
  CHSC48490  Monardella odoratissima subsp. pallida Vernon Oswald 1983-7-6 817 Butte Beside Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of its jct. with Calif. Hwy. 32. 1432 Comment
  CHSC52038  Monardella odoratissima subsp. pallida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 279 A Butte W edge of Scotts John Rd, 1.7 mi n of its jcn with Humbug/ Humboldt Rd, on open flat overlooking Scotts John Ck. 1828 Comment
  JEPS117416  Monardella odoratissima subsp. pallida Lowell Ahart 2010-9-28 17247 Butte Along the east 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 Philbrook Reservoir 1886 Comment
  UC525858  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  SEINET13948708 Image available Monardella pallida A. A. Heller 1917-1 12860 Butte Summit above Jonesville; ca 7000 ft alt. 2134 Comment
  CAS-BOT-BC220457  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla 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
  SEINET10895146  Monardella sheltonii A. Graff 1993-7-23 Graff 343 Butte Plumas National Forest. Hwy. 70 southwest to Oroville from Arch Rock, at a turnout on the right. Mixed hardwood-conifer forest. Past bloom. Comment
  CAS-BOT-BC220310  Monardella venosa C. C. Parry 1883-1-1 s.n. Butte Chico Comment
  UC726300  Monardella villosa subsp. villosa A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CHSC54877  Monochoria vaginalis Vernon H. Oswald; Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  UC1564781  Monolepis nuttalliana V. Oswald and L. Ahart 1989-6-27 3833 Butte ca. 3.3 mi. (air) s.e. Jonesville (Humbug Rd. at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  UC392218  Montia chamissoi E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  RSA636051  Montia fontana Michael A. Vincent, Ethan H. Freid 1998-4-6 8127 Butte Table Mountain Comment
  CHSC39886  Montia fontana subsp. chondrosperma M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5405 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC46607  Muhlenbergia andina V. Oswald; L. Ahart 1989-7-21 3885 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  SEINET10605684  Muhlenbergia andina Lowell Ahart 1987-6-9 Ahart 5740 Butte On dry sand, around rocks, on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC260532  Muhlenbergia filiformis Lowell Ahart 1983-8-16 4305 Butte 3 miles S of Butte Meadows, near Bull Hill Road 1600 Comment
  CDA32543  Muhlenbergia filiformis L. Ahart, Vernon H. Oswald 1999-10-3 8284 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC42398  Muhlenbergia filiformis Lowell Ahart 1987-6-9 5733 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  CHSC11973  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. On bank of pond. 1750 Comment
  UC398891  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte above Jonesville (bank of pond) 1750 Comment
  CHSC55399  Myosurus minimus subsp. minimus L. P. Janeway 1991-5-1 3922 Butte Ca 1 mi south of Wyandotte and ca 1/4 mi west of Dunstone Drive. 182 Comment
  JEPS120717  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  SEINET11268246  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville.; 0 38 Comment
  CHSC31006  Najas guadalupensis M. S. Taylor 1978-7-21 1846 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  CHSC33665  Nama lobbii R. A. Schlising; M. Merryman, R. Banchero, J. Fuller 1981-6-20 4091 Butte E of Inskip, 5.8 miles E of crossing of West Branch of Feather River. Immediate roadside. Comment
  CHSC39099  Nama lobbii R. A. Schlising 1980-7-28 3929 Butte E of Jonesville in n part of county, on road to Scotts John Creek. Comment
  RSA700392  Narthecium californicum Lowell A. Ahart 2004-8-2 11321 Butte The start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 4 miles (air) northeast of Stirling City 1690 Comment
  UCD87723  Nassella cernua P. B. Kennedy 1914-5-1 4754 Butte Buttte County: Comment
  CHSC25047  Nassella pulchra G. Foster 1972-4-28 2 Butte In Bidwell Park at the corner of the archery range in upper park. Comment
  CHSC6749  Nassella pulchra V. Hagaman 1968-4-19 476 Butte Cherokee Village, ca 200 yards E. of cemetary. Comment
  CHSC26880  Navarretia divaricata K. R. Stern 1974-6-30 5773 Butte Ca. 2 mi w of Philbrook Reservoir. Comment
  JEPS117331  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-28 17249 Butte On the 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 Philbrook Reservoir 1886 Comment
  CHSC91457  Navarretia filicaulis Lowell Ahart 2005-7-12 12135 Butte Road cut bank, on the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  RSA107397  Navarretia filicaulis L. S. Rose 1955-6-15 55101 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  RSA755415  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell park, about 10 miles northeast of Chico. 399 Comment
  RSA715675  Navarretia heterandra L. Ahart 2005-5-28 11815 Butte Along the ungrazed south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  CHSC20514  Navarretia intertexta M. S. Taylor 1975-6-25 799 Butte Above dam area, ca. 1/2 mi n of Richardson Springs Hotel, ca. 7 mi ne of Chico. 243 Comment
  RSA122934  Navarretia intertexta C. G. Albertus 1933-6-6 27 Butte 0.5 mile west of Pentz. 137 Comment
  UC600671  Navarretia intertexta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SEINET10496826  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1611 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS121945  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19597 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC426937  Navarretia leptalea subsp. leptalea E. B. Copeland 1930-6-28 444 Butte Scotch John meadow , Scotch John Meadow (Jonesville) 1650 Comment
  CHSC24156  Navarretia leucocephala B. Bunge 1976-4-19 19 Butte Ca 25 yd nw of intersection of Notre Dame Blvd. and Skyway. Chico. 67 Comment
  CHSC103999  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-6-20 16827 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  UC856846  Navarretia nigelliformis A. A. Heller 1914-5-14 11402 Butte sw of Pentz (near Dry Creek) Comment
  SEINET10496832  Navarretia propinqua Mary Susan Taylor 1978-9-9 Taylor 1917 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  JEPS107884  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  JEPS107889  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC36818  Navarretia viscidula subsp. purpurea D. H. Ikeda 1980-5-26 380 Butte Bidwell Park, Chico. Near end of paved road at old rifle range. Comment
  CHSC39329  Navarretia viscidula subsp. purpurea Lowell Ahart 1983-6-26 4133 Butte Found along the edge of Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  RSA0000011  Nemophila fallax C. C. Bruce 1897-03 2037 Butte [No location information on label.] Comment
  RSA3796  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Along Chico Creek about six miles east of Chico. Comment
  SEINET10969183  Nemophila heterophylla Mary Susan Taylor 1981-4-5 Taylor 3494 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET12334039  Nemophila heterophylla L. P. Janeway 1988-1 2964 Butte near the road to French Cr, 0.9 mi S of Coyote Gap 1189 Comment
  CHSC88986  Nemophila menziesii Christine Hantelman 2000-2-18 6 Butte 1.5 mi east on Wookey Road. 112 Comment
  CHSC31688  Nemophila pedunculata L. Ahart 1973-3-7 163 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  POM183140  Nemophila spatulata H. F. Copeland 1930-7-28 1302 Butte Neighborhood of Jonesville. Near head of South Willow Creek. 1829 Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  CAS-BOT-BC400068  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CAS-BOT-BC400070  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  UCD165420  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  SEINET3887706  Odontostomum hartwegii Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch about 2 1/2 mi NNE of Honcut between Oroville & Marysville.; 0 30 Comment
  SEINET4691040  Orcuttia greenei B. Crampton 1960-6-15 5621 Butte 10 miles southeast of central Chico Comment
  UC426981  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville 1550 Comment
  JEPS114177  Orobanche fasciculata L. P. Janeway 2006-5-31 8650 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Rim road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Comment
  CAS-BOT-BC499845  Orobanche fasciculata C. R. Quick 1951-6-5 51 -89 Butte 13 mi from Chico on Deer Creek Road Comment
  SEINET10549653  Orthocarpus campestris Mary Susan Taylor 1978-5-7 Taylor 1603 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  RSA32035  Orthocarpus lacerus A. A. Heller 1941-5-9 16107 Butte On the Clark Road to Paradise a half mile above the site of the old Clear Creek Post Office. Comment
  RSA325140  Orthocarpus lacerus M. S. Taylor, Vernon H. Oswald 1984-4-4 5393 Butte S side of Humbug road, 2 miles SW of Nimshew, 12 air miles NE of Chico. Comment
  RSA715538B  Orthocarpus lacerus L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC27915  Osmorhiza chilensis M. S. Taylor 1978-7-19 1733 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jomesville. 1524 Comment
  CHSC70827  Osmorhiza chilensis Vernon Oswald 1998-4-12 8903 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 396 Comment
  CHSC21007  Oxalis corniculata M. S. Taylor 1975-4-6 438 Butte In lawn, e side of 1200 block of Arcadian, Chico. 60 Comment
  JEPS110382  Oxypolis occidentalis Lowell Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  OBI15488  Packera eurycephala var. lewisrosei Lewis S. Rose 1967-6-11 67103 Butte 3 mi S of Pulga, Feather River Canyon 610 Comment
  UC1564780  Packera subnuda V. Oswald and L. Ahart 1989-6-27 3834 Butte 3.3 air mi se Jonesville (Humbug Rd at Butte Creek House); Butte Creek 1767 Comment
  CDA13901  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  UC768483  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CAS-BOT-BC253698  Panicum capillare Lowell Ahart 1987-7-3 5776 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC94761  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS98592  Parentucellia viscosa Lowell Ahart 2000-5-23 8385 Butte 13 air miles SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  JEPS116010  Paspalum dilatatum Lowell Ahart 2009-7-3 15993 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  RSA724850  Paspalum dilatatum L. Ahart 2006-9-28 13384 Butte on the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CAS-BOT-BC202818  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 450 Comment
  CHSC39228  Paxistima myrsinites M. S. Taylor; K. Tharp 1983-3-11 5224 Butte Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 975 Comment
  SEINET10549178  Pedicularis densiflora Mary Susan Taylor 1981-3-16 Taylor 3402 Butte T21N R6E sw sec 18. Brush Creek quad. S side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  CHSC11794  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  CHSC60942  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte Jackass Flat, Mooreville Ridge, about 1 air mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10547625  Penstemon azureus subsp. azureus Mary Susan Taylor 1981-5-21 Taylor 3774 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC92734  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 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
  JEPS108825  Penstemon azureus var. azureus Lowell Ahart 2006-5-10 12618 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  UC177597 Image available Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte near Chico; Richardson Springs; Richardson Springs, near Chico, Butte Co. 152 Comment
  CHSC94061  Penstemon heterophyllus var. purdyi R. D. Fischer 2005-6-12 738 Butte Sierra Nevada foothills, off Hwy. 32, about 3 miles east of Chico at theeast end of Humboldt trailhead in Bidwell Park. Roadside collection. 407 Comment
  NY601791  Penstemon heterophyllus var. purdyi Mrs. C. C. Bruce 05 1898 2009 Butte Comment
  SEINET10548024  Penstemon laetus Mary Susan Taylor 1980-6-14 Taylor 2878 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  SEINET10832459  Penstemon laetus Mary Susan Taylor 1975-6-30 Taylor 815 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC44704  Penstemon laetus var. leptosepalus R. Banchero 1980-6-12 215 Butte Jct of Humbolt Rd and Hwy 32. 1024 Comment
  POM195087  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral. 1646 Comment
  POM220089  Penstemon laetus var. leptosepalus H. F. Copeland 1927-9-4 480 Butte Jonesville. Comment
  RSA34041  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 miles from Oroville on Feather River Hwy. Comment
  UC1012164  Penstemon laetus var. leptosepalus F. W. Pennell and A. A. Heller 1940-6-5 25682 Butte Route 24 along Feather River (above Oroville, in Lassen Nat. Forest); Lassen Nat. Forest, along Feather River 640 Comment
  CAS-BOT-BC239451  Penstemon rydbergii var. oreocharis A. A. Heller 1928-7-10 14652 Butte At Butte Meadows Comment
  CHSC39772  Pentagramma triangularis Richard K. McGaugh 1979-4-7 6 Butte Sec. 20 , Table Mt., ca. 120 m. w. of Cherokee Rd., 5.65 km. n. of Oroville. 457 Comment
  JEPS113228  Pentagramma triangularis Lowell Ahart 2007-5-22 13918 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CAS-BOT-BC77135  Pentagramma triangularis subsp. semipallida Lowell Ahart 1987-5-12 5637 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC32117  Pentagramma triangularis subsp. semipallida L. Ahart 1975-3-7 706 Butte Along rd from Ponderosa Dam to Forbestown. 365 Comment
  CHSC32724  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-8 3497 Butte At end of Dark Canyon Rd, around the turnout near the restroom up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  JEPS108137  Pentagramma triangularis subsp. semipallida Lowell Ahart 2005-11-12 12482 Butte Steep road cut on the east side of Dark Canyon Road, south of the large parking area, south of the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  SEINET13944948 Image available Perideridia bolanderi A. A. Heller 1914-1 11572 Butte Volcanic hills 5 miles east of Oroville in the Digger pine belt. Comment
  CHSC66659  Perideridia kelloggii Vernon H. Oswald; Lowell Ahart 1996-7-22 8089 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the SW corner of Tract 3.4, Sanctuary II, on the Llano Seco Ranch side of the refuge boundary. 32 Comment
  CHSC105535  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC44363  Perideridia lemmonii Lowell Ahart 1988-6-29 6087 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  CHSC94399  Perideridia lemmonii Lowell Ahart 2006-8-15 13176 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
  CHSC109766  Persicaria hydropiper Lowell Ahart 2012-10-28 18522 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC418953  Persicaria lapathifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC1345  Persicaria lapathifolia V. Holt 1940-7-16 Butte W. Sacramento Ave., Chico. 54 Comment
  JEPS124338  Persicaria lapathifolia Lowell Ahart 2015-10-16 20555 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC31762  Persicaria maculosa L. Ahart 1977-9-20 1580 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC419181  Persicaria maculosa Forman T. McLean 1921-10-1 37 Butte Nelson Comment
  SBBG128610  Persicaria punctata L. Ahart 2012-9-28 18466 Butte middle of Big Chico Crk, ca. 30 yards W of the Freeway, Lower Bidwell Park, Chico 65 Comment
  RSA41905  Petrorhagia dubia Ella Dales Cantelow 1940-5-10 3078 Butte 10 miles E of Oroville, Bidwell Bar Bridge. Comment
  UCSB63949  Petrorhagia dubia Snodgrass, G. 1981-4-11 Butte Ca. 5 mi. E of Chico; ca. 1/2 miles E of Rockwood Lake entrance on Humbug Rd. (now Honeyrun Rd.) Comment
  CHSC83910  Phacelia cicutaria var. cicutaria Lowell Ahart 2003-4-10 10065 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CHSC33711  Phacelia corymbosa J. D. Jokerst 1981-5-21 1327 Butte Pulga Rd., ca 1/10 mi NE of its junction with Hwy 70. Comment
  CHSC52402  Phacelia egena Stacy Scott 1981-4-14 Butte 1 km E of hwy 32 and Santos Way intersection on Santos Way, ca 11 km NNE of Chico. Comment
  JEPS28427  Phacelia heterophylla subsp. virgata L. R. Heckard with R. Bacigalupi 1962-6-1 1307 Butte on Honey Run rd 0.4 mi below main street of Paradise 487 Comment
  RSA4128  Phacelia mutabilis E. B. Copeland 1930-7-13 s.n. Butte Jonesville. 1550 Comment
  SEINET10497021  Phacelia purpusii Mary Susan Taylor 1980-7-6 Taylor 3064 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  RSA0008811  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte West of Arch Rock Tunnel on Feather River Hwy a mile or two west of Arch Rock Tunnel. Comment
  UC203841  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 mi n Oroville Comment
  CHSC30929  Philadelphus lewisii M. S. Taylor 1979-5-4 1990 A Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek, Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC6628  Phlox M. MacArthur 1968-6-13 323 Butte SE yard of building V, Chico State College campus. 60 Comment
  UC201131  Phlox diffusa unknown 1892-6-28 Butte Jonesville Comment
  CAS-BOT-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  SEINET12230198  Phoradendron juniperinum M. S. Taylor 1976-1 997 Butte 2 mi N of Cohassett, 10 ft. E of Cohasset Hwy 762 Comment
  RSA443110  Phoradendron libocedri L. Ahart, P. Ahart 1985-9-15 5169 Butte On dry lava cap about 2 miles W of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  CHSC102794  Phoradendron villosum Lowell Ahart 2009-6-30 15959 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  UC1194602  Phoradendron villosum Del Wiens 1960-6-15 2726 Butte near Paradise 152 Comment
  CHSC31799  Phyla nodiflora var. rosea L. Ahart 1975-6-22 800 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS113582  Physalis lancifolia Lowell Ahart 2007-8-19 14494 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC44289  Physocarpus capitatus V. Oswald; W. Dempsey, D. Perske 1988-6-15 3384 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Along the W. Branch of Mud Creek. 853 Comment
  CHSC102989  Phytolacca americana Lowell Ahart 2009-8-13 16280 Butte West end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 68 Comment
  UC1563297  Phytolacca americana unknown 1990-9-21 6598 Butte about 2 1/2 mi n and 1/4 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
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Dec 3 2014
  SEINET11934478  Phytolacca americana L. Ahart, Oswall, V. 1985-1 5159 Butte Along La Porta Road about 4 mi NE of Bangor 305 Comment
  NY49911  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  UC398883  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  CHSC3903  Pinus lambertiana R. Carter 1967-7-31 499 Butte Found ca. 17 mi NE of Oroville on W side Big Bald Rock along E side Big Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC3267  Pinus nigra M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CHSC82716  Pinus sabiniana Tara Morgan 2002-3-19 3 Butte Right off the west side of Highway 32 on the slope of Big Chico Creek watershed towards the top of the slope along the paved road. 528 Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  CHSC116565  Piperia elongata L. P. Janeway 2015-6-17 11781 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road, 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. Northwest facing slope above the road. 826 Comment
  CHSC39520  Piperia elongata Lowell Ahart 1983-6-12 4051 Butte About 1 mile south of Crystal hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC61524  Piperia transversa Lowell Ahart 1993-6-16 6960 Butte On the east side of the Enterprise Boat Launch Parking Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 304 Comment
  UCD89657  Piptatherum miliaceum L. Ahart 1981-9-26 3207 Butte 6 miles west of Chico. 40 Comment
  SEINET10529819  Pityrogramma triangularis Mary Susan Taylor 1981-3-24 Taylor 3439 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
  SEINET10932924  Pityrogramma triangularis Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5231 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  SEINET10529969  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-5-4 Taylor 1996 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  SEINET10529970  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-4-16 Taylor 2483 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
  CHSC115001  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  CHSC103976  Plagiobothrys austiniae Lowell Ahart 2010-5-7 16609 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC28994  Plagiobothrys austiniae J. D. Jokerst 1980-3-12 474 Butte NE of Chico. Comment
  CHSC29739  Plagiobothrys austiniae J. D. Jokerst 1980-4-17 595 Butte Top of North Table Mt. In drainages and edges of vernal pools. 441 Comment
  UC762837  Plagiobothrys austiniae R. F. Hoover 1938-4-24 3239 Butte 3 mi n Chico Comment
  UC79364  Plagiobothrys cusickii Mrs. R. M. Austin Butte Comment
  CHSC29039  Plagiobothrys glyptocarpus J. D. Jokerst 1979-4-20 543 Butte In the bottoms of vernal pools below the high water mark. Top of North Table Mt, N of Cherokee Rd. 403 Comment
  HSC100802  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte Bottom of small drainage, 100 yd. W of the fence, 0.5 mi. S of improved parking area and the Cherokee Rd., North Table Mountain, 5.5 (air) mi. NE of Oroville 399 Comment
  RSA0116258  Plagiobothrys hispidulus Lowell A. Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC49829  Plagiobothrys leptocladus Vernon Oswald 1990-4-4 4145 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 268 Comment
  HSC32416  Plagiobothrys nothofulvus Kitsy Kelly 1974-4-20 30 Butte Table Mtn. Volcanic area Comment
  JEPS127064  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  SEINET10497552  Plagiobothrys nothofulvus Mary Susan Taylor 1973-1 Taylor 37 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10497553  Plagiobothrys nothofulvus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5239 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
  CHSC31255  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1980-4-20 3571 Butte Between Singer Creek and Cana-Pine Creek Road; in vernal pool. Comment
  CHSC31579  Plagiobothrys stipitatus var. micranthus L. Ahart 1974-4-14 405 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS107765  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 280 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
  POM368952  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  CHSC30352  Plantago bigelovii J. D. Jokerst 1980-4-17 598 Butte Top of North Table Mountain. 419 Comment
  CHSC103994  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  CHSC82434  Plantago coronopus Lowell Ahart 2002-5-7 9642 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
  CHSC47459  Plantago elongata Lowell Ahart 1974-4-24 426 Butte Growing on the bottom of small vernal pools, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC54364  Plantago elongata M. Bailey 1991-4-19 566 Butte Butte College campus, ca 300 ft e of Williams Road, on western side of Well #3, ca 1/4 mi n of Pentz Road. 85 Comment
  CHSC1220  Plantago erecta F. Roos 1930-3-28 Butte Paradise. 548 Comment
  CHSC52100  Plantago erecta Evelyn Jo Baker 1984-2-28 5 Butte W side of Cohasset Rd., 100 yds n of Richardson Springs Road, ne of Chico. Comment
  CHSC52101  Plantago erecta William Nielson 1984-3-28 16 Butte 5 m s of Skyway, ca. 2 km w of jct with Hwy 99. 95 Comment
  LA206332  Platanus racemosa A. A. Heller; 1914-3-12 11192 Butte the canyon of Big Chico creek E of Chico 68 Comment
  CHSC76953  Platystemon californicus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  JEPS127607  Plectritis congesta subsp. brachystemon L. P. Janeway 2015-4-21 11666 Butte Plumas National Forest; SW side of Old Forbestown Road, 0.8 road km N of Forbestown Road and New York Flat Road. Comment
  CAS-BOT-BC458147  Pleuricospora fimbriolata E. B. Copeland 1937-12-1 s.n. Butte Jonesville Comment
  SEINET10449169  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 Ahart 5148 Butte South of Willow Creek, about 100 m south-west of the Section Corner of Sections 17, 16, 20 and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  UC204921  Poa annua A. A. Heller 1914-3-28 11243 Butte Chico; Sacramento Valley Comment
  SEINET10593496  Poa annua Isle 1969-4-18 ISLE 352 Butte About 30 yards S. of the Pentz-Magalia HW-Pentz Road intersection off the W. side of the Pentz-Magalia HW. 213 Comment
  CHSC31930  Poa bolanderi J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1037 Butte Top of Humboldt Peak on the E slope ca. 1/4 mi. below summit. Comment
  CAS-BOT-BC254923  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2.5 miles N and 3 miles E of Honcut, about 12 miles S of Oroville 67 Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  CHSC38844  Poa bulbosa Vernon Oswald 1983-3-31 231 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 50 ft. w of the w entrance to Parking Area S (Brown's Hole); about 2.6 mi e of the power lines. 243 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 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
  SEINET10507579  Poa compressa Lowell Ahart 1983-9-17 Ahart 4438 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  UC1562320  Poa cusickii subsp. epilis Vernon Oswald and Lowell Ahart 1990-7-19 4371 Butte ca 3 mi e Philbrook Reservoir (ca 0.8 mi w of Plumas Co line, s side of Philbrook Creek) 1965 Comment
  CHSC50440  Poa howellii Vernon Oswald 1990-6-18 4299 Butte Paradise Lake, ca. 3 mi north of Magalia. On a trailside bank on the northwest side of the lake near Coutolenc Creek. 777 Comment
  JEPS121977  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  RSA718081  Poa pratensis L. Ahart 2006-7-16 12973 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC31931  Poa pringlei J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1034 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CHSC107428  Poa sierrae L. P. Janeway 2011-7-21 10517 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cutbanks, east-facing. 1067 Comment
  HSC32603  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  HSC72951  Polanisia dodecandra subsp. trachysperma M. S. Taylor 1980-8-15 3255 Butte S side of Neal Rd., 0.1 mi. E of its junction with Hwy. 99, 7 mi. S of Chico 61 Comment
  CHSC36070  Polycarpon tetraphyllum R. A. Schlising 1982-6-1 4297 Butte Chico; n end of Salem Street between 2nd Street and University campus; on sidewalk. Comment
  CAS-BOT-BC167552  Polygala cornuta var. cornuta John Thomas Howell 1962-6-15 37473 Butte Magalia 731 Comment
  CAS-BOT-BC167554  Polygala cornuta var. cornuta C. R. Quick 1951-8-21 51 100 F Butte Near Lomo Junction Comment
  CHSC38607  Polygala cornuta var. cornuta Vernon Oswald 1983-6-3 633 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC89834  Polygala cornuta var. cornuta L. P. Janeway; B. Castro 2004-6-13 8134 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  JEPS88567  Polygonum amphibium var. emersum Vernon H. Oswald and Lowell Ahart 1996-5-27 7672 Butte U.S. Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (in a ditch between 7 Mile Lane and Tract 6, Sanctuary 2, just n of the equipment parking lot); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC27247  Polygonum aviculare P. Moyer 1972-3-4 103 Butte CSUC campus. 2nd and Ivy parking lot. 60 Comment
  CHSC31768  Polygonum aviculare L. Ahart 1980-5-10 2232 Butte Peter Ahart Ranch, ca, 2,5 mi n and 1/4 mi e of Honcut, in farmed field. 50 Comment
  CAS-BOT-BC109133  Polygonum bidwelliae Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley. Comment
  CAS-BOT-BC109141  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road. 609 Comment
  CHSC28787  Polygonum bidwelliae J. D. Prouty 1979-5-23 7905232 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  UCD80666  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-2 SNFN 0195 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  SEINET11934608  Polygonum bidwelliae Unknown 1988-1 29 Butte Salmon Hole, ca.5 mi E of Chico Municipal Golf Course 122 Comment
  UC849190  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte e Chico; Canyon of Chico Creek Comment
  CAS-BOT-BC414417  Polygonum douglasii A. A. Heller 1914-7-23 11603 Butte About Chico Meadows 1219 Comment
  CHSC42027  Polygonum douglasii subsp. douglasii Lowell Ahart 1986-8-15 5390 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  JEPS88583  Polygonum douglasii subsp. douglasii Vernon H. Oswald and Lowell Ahart 1996-7-22 8082 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (w side of levee at sw corner of Tract 6, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  JEPS103454  Polygonum lapathifolium Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UC1563298  Polygonum lapathifolium unknown 1990-10-3 6613 Butte about 1/8 mi ne Canyon Creek Bridge across lake (below high water line of lake, n side of creek); Lake Oroville, East Fork of Canyon Creek 243 Comment
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC419813  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC39127  Polygonum parryi R. A. Schlising 1980-5-31 3606 Butte S of the village of Cohasset; along fire trail above Cohasset Highway; in open, muddy areas. Comment
  CHSC39128  Polygonum parryi R. A. Schlising; J. Jokerst, R. Banchero 1980-6-16 3712 Butte 0.1 mi s of jct Humboldt Road and Skyway at Butte Meadows, along Skyway in meadow. Comment
  CHSC46011  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte Along the edge of the dirt road where there is 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 northeast of Stirling City. 1371 Comment
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CDA13842  Polygonum persicaria G. F. Hrusa, T. D. Wilfred 1996-9-5 13570 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  UC204448  Polygonum phytolaccifolium A. A. Heller 1914-8-8 11672 Butte Jonesville; stream bank 1524 Comment
  UC204575  Polygonum punctatum A. A. Heller 1914-7-16 11578 Butte hills 8 mi n Oroville Comment
  SEINET3404075 Image available Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville, Colby Canyon 1550 Comment
  SEINET10530408  Polypodium californicum Mary Susan Taylor 1981-5-7 Taylor 3633 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  SEINET10966165  Polypodium californicum Mary Susan Taylor 1979-9-28 Taylor 2191 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC90206  Polypodium calirhiza Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico. 406 Comment
  RSA715711  Polypodium calirhiza L. Ahart 2005-1-20 11472 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  UCD137019  Polypodium calirhiza M. S. Taylor 1980-3-19 2394 Butte Macabes Creek Canyon, ca. 100 ft. E of Lumpkin Rd., ca. 2.5 mi. N of its jct with Forbestown Rd., ca. 18 mi. NE of Oroville. 396 Comment
  CHSC73552  Polypogon australis B. Castro; L. Gehrung 1995-7-26 595 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  JEPS115998  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC204879  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 mi n Oroville Comment
  UCD90979  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC233056  Polypogon interruptus Lowell Ahart 1980-7-29 2515 Butte Along lower Forbestown Road 750 Comment
  JEPS107782  Polypogon interruptus Lowell Ahart 2005-5-2 11779 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC39521  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte Along the edge of the road, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 209 Comment
  CHSC116275  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte On the east side of Doe Mill Road, about a 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) noth of De Sabla Resevoir. 710 Comment
  CAS-BOT-BC72298  Polystichum imbricans subsp. imbricans M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock Tunnel 487 Comment
  CAS-BOT-BC72295  Polystichum imbricans subsp. imbricans Lowell Ahart 1984-5-28 4648 Butte below a dirt road about 1 1/4 miles northeast of the West Branch Bridge, about 2 miles south of Old Yankee Hill 450 Comment
  CHSC28380  Polystichum kruckebergii Robert A. Schlising; Marc P. Hayes 1978-6-24 3292 Butte Extreme NW Butte County, just below summit of Humboldt Peak above Jonesville. 2133 Comment
  RSA320498  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Wildlife Refuge, at end of West Liberty Road, ca. 12 miles southwest of Gridley. 19 Comment
  RSA500429  Potamogeton diversifolius Vernon H. Oswald 1989-5-30 3788 Butte Sheep Camp Ditch and Vandergrift Lake on the west side of the north end of Cana-Pine Creek Road. 55 Comment
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  UC1099837  Potamogeton pectinatus Herbert L. Mason, Verne Grant 1946-8-8 13000 Butte Reclamation Ditch 833 on West Gridley Road near Pennington Road 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
  CAS-BOT-BC539446  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC113324  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  UC204597  Proboscidea louisianica subsp. louisianica W. C. Morgan 1918-9-2 Butte Chico Comment
  POM219500  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville 1524 Comment
  JEPS118066  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 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
  SEINET11739303  Pseudotsuga menziesii Unknown 1982-1 1 Butte 50 m W of Coultolenic Road, 150 m E of Skyway, 0.5 km N of Magalia 700 Comment
  CHSC113389  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte Depression on both sides 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
  CHSC39535  Psilocarphus tenellus var. tenellus Lowell Ahart 1983-6-12 4042 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC48192  Psilocarphus tenellus var. tenellus Vernon Oswald 1987-4-15 2328 Butte Butte Creek Preserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  CHSC62505  Ptelea crenulata B. Castro 1987-5-18 112 Butte CA 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  RSA0047080  Ptelea crenulata L. Ahart 2012-4-30 17931 Butte Both sides of South Rim Trail, about 0.5 miles southwest of the old homestead, pond, and Ten Mile House Road, about 0.75 miles west of Highway 32, about 8 miles northeast Chico, south part of Upper Bidwell Park. 256 Comment
  UC109312  Ptelea crenulata Mrs. R. M. Austin jun 1879 263 Butte Comment
  CHSC30732  Pteridium aquilinum var. pubescens M. S. Taylor 1980-5-27 2649 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  UC812706  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC6298  Pterospora andromedea Edwin Bingham Copeland 1931-7-15 668 Butte Jonesville Comment
  UC478489  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville; ; Jonesville, Butte Co. 472 Comment
  CHSC103729  Pterostegia drymarioides Lowell Ahart 2010-5-16 16697 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC45956  Pterostegia drymarioides Lowell Ahart 1974-4-7 351 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC53990  Puccinellia simplex Vernon H. Oswald 1991-4-25 4532 Butte West Liberty Rd, 0.8 mi west of Pennington Rd, on the north edge of Gray Lodge Wildlife Area. Flat on the south side of the road just west of the PG and E Substation. 20 Comment
  CHSC26674  Pyrola dentata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1483 Butte At Humboldt Summit at Butte-Tehama County line, ca. 150 ft w of old Humboldt Rd, on Butte side. 2133 Comment
  CDA13272  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-9 13120 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  CHSC4669  Pyrola picta Renee Carter 1966-6-15 441 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 5 yds off road. 1097 Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  CAS-BOT-BC466011  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CDA38857  Pyrola picta subsp. dentata Vernon H. Oswald & Lowell Ahart 1998-8-11 9461 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  CAS-BOT-BC94691  Quercus X howellii John Thomas Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CDA21847  Quercus berberidifolia J. T. Howell 1955-6-15 30492 Butte 6 miles from Paradise on road to Pentz. Comment
  UC762329  Quercus berberidifolia R. F. Hoover 1938-8-2 4719 Butte Chico to Paradise road Comment
  CHSC20506  Quercus chrysolepis M. S. Taylor 1975-5-2 549 Butte Ca. 1/4 mi w of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  CHSC29708  Quercus chrysolepis J. D. Jokerst 1980-4-21 630 Butte Top of North Table Mt., N of Cherokke Rd. 381 Comment
  CHSC3565  Quercus chrysolepis R. D. Briggs 1966-2-20 21 Butte Three miles due south of Feather Falls. Comment
  RSA594187  Quercus chrysolepis S. O. Mattoon 1978-9-23 63 Butte Southern Cascade Mountains: Middle Fork Butte Creek Rim, Ponderosa Way Forest Road; 5 air miles NNW of Magalia. 762 Comment
  SEINET10477144  Quercus chrysolepis Mary Susan Taylor 1980-5-27 Taylor 2659 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC96641  Quercus lobata Lowell Ahart 2007-3-28 13601 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 51 Comment
  JEPS115104  Quercus lobata Lowell Ahart, John Dittes 2008-11-14 15450 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  CAS-BOT-BC104691  Quercus wislizeni John Thomas Howell; H. Keith Wagnon 1980-5-28 53712 Butte Honcut Creek on road from Oroville to Marysville 30 Comment
  CDA19815  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Table Mtn, Oroville. 359 Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  RSA399351  Ranunculus alismifolius var. alismellus H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  SD1770  Ranunculus aquatilis E. B. Copeland 1929-7-28 360 Butte Jonesville, in cold streams 1500 Comment
  CHSC84471  Ranunculus aquatilis var. aquatilis Vernon Oswald 1983-4-9 315 Butte Upper Bidwell Park, Chico, 50 ft n of Upper Park Rd. in the ditch draining Horseshoe Lake. 91 Comment
  CHSC20721  Ranunculus aquatilis var. capillaceus M. S. Taylor 1975-8-31 890 Butte On edge of Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CDA3504  Ranunculus arvensis L. L. Heinrichs 1970-5-9 Butte East Biggs Road, Biggs. 0 Comment
  CHSC12179  Ranunculus bonariensis var. trisepalus Lowell Ahart 1973-3-26 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC61607  Ranunculus canus A. A. Heller; H. E. Brown 1902-5-3 5449 Butte Near Nelson. Comment
  CHSC61608  Ranunculus canus R. M. Austin 1896-4-1 217 Butte [Label illegible] fields. Comment
  UC118186  Ranunculus canus Mrs. R. M. Austin April 1896 Butte e Chico Comment
  CHSC46844  Ranunculus flammula var. ovalis Kirsten Tarp 1982-7-16 206 Butte N part of county at Crane Valley; streamside at margin of meadow. 1584 Comment
  UCD96254  Ranunculus muricatus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Butte Irrigation District Canal, 4 miles north of Gridley near U.S. 99E. Comment
  UC478516  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  UC478517  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville 1500 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 Comment
  CHSC31957  Raphanus raphanistrum J. D. Jokerst 1979-3-25 1157 A Butte At edge of Table Mountain, E edge of mountain N of Cherokee Rd. 396 Comment
  SEINET13946326 Image available Rhamnus crocea A. A. Heller 1915-1 11847 Butte 2 miles below Centerville in the Sierra foothills Comment
  CHSC102219  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 386 Comment
  CHSC38639  Rhamnus ilicifolia Vernon Oswald 1983-5-23 539 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 500 ft e of Parking Area R (ca. 2.4 mi e of the power lines). Comment
  POM136612  Rhamnus ilicifolia A. A. Heller, H. E. Brown 1902-5-10 5522 Butte Berry Canyon (Near Clear Creek). Comment
  UC1562321  Rhamnus purshiana Vernon Oswald and Lowell Ahart 1990-7-19 4364 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 3 mi e of of the Plumas County line) 1981 Comment
  POM85713  Rhamnus tomentella subsp. tomentella C. C. Bruce 1898-01 1889 Butte Valley Comment
  UC2026886  Rhododendron Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 Comment
  JEPS98291  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  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
  LA205411  Ribes cereum E. B. Copeland; 1931-6-11 sn Butte Kirby's Meadow, Jonesville 1800.0 Comment
  SEINET10904148  Ribes nevadaense Mary Susan Taylor 1975-4-29 Taylor 548 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  SEINET3118954 Image available Ribes nevadense E. B. Copeland 1931-1 647 Butte Jonesville, woods near Butte Creek 1550 Comment
  SEINET12215665  Ribes roezlii Unknown 1977-1 5 Butte ca 15 mi E of Chico, 3 mi NE of Forest Ranch & 50 yds NE of Little Chico Creek 792 Comment
  CHSC109130  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17754 Butte On the north side of Ten Mile House Road, about 100 yards northeast of Guardian Trail, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 400 Comment
  POM53911  Rigiopappus leptocladus A. A. Heller, H. E. Brown 1902-5-12 5540 Butte Grade between Clear Creek and Paradise. Comment
  UCD135433  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte South side of Concow Road, ca. 0.5 mile south of its junction with Ponderosa Way, ca 20 air miles noth of Oroville. Comment
  JEPS32559  Rorippa Duncan Dunning 1921-7-30 Butte Butte Meadows Comment
  CHSC539  Rorippa curvisiliqua var. orientalis M. Anthony 1954-5-30 Butte Rag Dump 5, Concow. 609 Comment
  CHSC23134  Rorippa nasturtium-aquaticum M. S. Taylor 1975-10-31 983 Butte Ca. 500 yds n of Pentz Rd, in Butte College Campus, by the creek, ca. 12 mi s of Chico. 91 Comment
  CHSC46347  Rorippa nasturtium-aquaticum Lowell Ahart 1989-5-23 6239 Butte Along the bottom of a stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC146437  Rosa bridgesii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC30893  Rosa gymnocarpa M. S. Taylor 1980-9-12 3333 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the hwy on dirt rd. 975 Comment
  JEPS94699  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  JEPS94876  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  CHSC60850  Rosa pisocarpa subsp. ahartii Vernon H. Oswald; Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  RSA716152  Rosa woodsii var. ultramontana L. Ahart 2005-7-13 12144 Butte About 20 yards S of the intersection of Forbestown Road and Black Bart Road. About 3.5 miles (air) SW of Forbestown. About 12 miles (air) E of Oroville. 749 Comment
  CHSC20098  Rosmarinus officinalis M. S. Taylor 1975-4-8 449 Butte On se corner of Little Cafeteria, California State University, Chico. 60 Comment
  CHSC55060  Rotala indica Lowell Ahart 1991-10-25 6731 Butte Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC89501  Rotala indica G. Douglas Barbe 1978-8-14 2437 Butte Check-levees, Biggs Rice Experiment Station. [Lat./Long. on label is '39 degrees 44' N; 121 degrees 40' W']. Comment
  CHSC42056  Rotala ramosior Lowell Ahart 1986-11-9 5441 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
  CDA31973  Rubus laciniatus L. Ahart 2009-7-9 16013 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  SBBG3096  Rubus laciniatus H. and M. Dearing 1938-6-21 2048 Butte 20 mi NE of Chico, near Shuffleston Station Comment
  CHSC65431  Rubus pensilvanicus Vernon Oswald 1987-4-16 2330 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  SEINET10483603  Rubus procerus Mary Susan Taylor 1975-5-24 Taylor 771 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CHSC48874  Rubus ursinus Vernon Oswald 1987-6-4 2953 Butte East arm of Paradise Reservoir near Doon Creek. 777 Comment
  CAS-BOT-BC421911  Rumex acetosella Javier Penalosa 1962-6-18 2460 Butte Near confluence of French and Peavine Crks. 609 Comment
  SEINET10904513  Rumex pulcher Mary Susan Taylor 1977-7-15 Taylor 1420 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CAS-BOT-BC434069  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  JEPS114725  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-8 14710 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  POM161668  Sagittaria latifolia E. B. Copeland 1929-7-29 s.n. Butte Joneville, near Butte Creek 1750 Comment
  UCD138046  Sagittaria latifolia Herbert L. Mason; Verne Grant 1946-8-14 13030 Butte Sacramento Outing Club. Butte Sink. Comment
  CHSC2053  Sagittaria montevidensis subsp. calycina D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  POM219139  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville. Kirby Meadows. 1829 Comment
  SEINET11987376  Salix exigua E. L. Smith 1971-1 1064 Butte Big Chico Creek in Bidwell Park, Chico Comment
  CHSC21075  Salix exigua var. hindsiana M. S. Taylor 1975-10-3 935 Butte In Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC107835  Salix gooddingii J. T. Howell 1959-9-20 34657 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC101146  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 203 Comment
  JEPS115187  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CAS-BOT-BC125172  Salix lasiandra var. lasiandra Lowell Ahart 1989-5-29 6317 Butte Along the gravel road to the Forbestown Reservoir, about 1 1/2 miles north-east of Forbestown Road, about 3 miles north-east of Forbestown 792 Comment
  CHSC110314  Salix lasiolepis B. Castro 2006-8-10 1598 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 2.5 mi NE of Richvale, and 0.3 mi S of the Western cnal siphon in Cherokee Canal. On W side of canal abt 30 ft N of dirt road crossing the canal. 35 Comment
  JEPS119598  Salix lasiolepis Lowell Ahart 2012-4-9 17827 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  JEPS119887  Salix lasiolepis Lowell Ahart 2012-6-5 18169 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  SEINET11957677  Salix lasiolepis Unknown 1987-1 5490 Butte along North Honcut Creek, 2.5 mi n and 3 mi e of Honcut, 12 mi SE of Oroville 67 Comment
  UC446429  Salix ligulifolia E. B. Copeland 1931-6-10 Butte below <Copeland> house between Copeland meadows Jonesville (above lower meadow) 1500 Comment
  CHSC60851  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1993-6-22 5561 Butte In Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  CHSC38665  Salix melanopsis Vernon Oswald 1983-5-22 526 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  UCD99300  Salsola ryanii G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13066 Butte Northern Sacramento Valley: East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC48297  Salsola tragus Vernon Oswald 1984-6-3 1249 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. Growing on a sandbar on the edge of the river. 39 Comment
  CHSC20129  Salvia columbariae D. Joley 1968-8-5 73 Butte Found growing on Centerville Rd. Comment
  POM219484  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville. 1550 Comment
  CAS-BOT-BC238616  Sambucus nigra subsp. caerulea Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  CHSC2821  Sanicula bipinnata David Prall 1965-3-14 6 Butte Ca. 10 yds. from edge of cliff ca. 30 yds. from Neal Rd., 1 mile east of HW 99E. Comment
  JEPS119612  Sanicula bipinnata Lowell Ahart 2012-4-9 17826 Butte About 20 yards southeast of Big Chico Creek, on the northwest side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  CHSC3280  Sanicula bipinnatifida M. L. Hillier 1966-3-21 Butte Along rd. side about 1 1/4 miles e. of Hwy. 99 E. on Pentz rd. Comment
  CHSC51994  Sanicula bipinnatifida Patty L. Venable 1978-4-21 4 Butte 6 mi n of Oroville, 1 1/2 mi 2 of Cherokee Road. 304 Comment
  JEPS48316  Sanicula bipinnatifida Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2694 Butte Pulga Bridge North Fork of Feather River (w side) 472 Comment
  UC726870  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Paradise Comment
  CHSC45882  Sanicula crassicaulis Lowell Ahart 1981-4-24 2783 Butte Along the sides of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 45 Comment
  CHSC60948  Sanicula graveolens Lowell Ahart 1993-6-26 7045 Butte About 1/4 mile north of Jackass Flat, Mooreville Ridge, about 1 1/4 miles (air) north-west of Lost Creek Reservoir. 1188 Comment
  RSA4229  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1500 Comment
  CAS-BOT-BC328133  Santolina chamaecyparissus T. C. Fuller 1967-9-25 16411 Butte Town of Brush Creek, Oroville-Quincy Highway, Sierra Nevada 1042 Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC3358  Schinus dependens Robert L. Smith 1966-3-4 39 Butte U.S. Plant Introduction Station 5 miles SE of Chico. Comment
  UCD49963  Schoenoplectus mucronatus Carl M. Wick 1983-6-1 s.n. Butte CA. Butte Co. 2 1/2 mis. n. of the Richvale Hwy, on Erickson Rd. Comment
  JEPS95816  Schoenoplectus tabernaemontani Lowell Ahart 1999-9-21 8278 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
  UC1609267  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte about 1/4 mi w Lost Creek Reservoir; w of Lost Creek Reservoir 1036 Comment
  SEINET3915176  Scirpus mucronatus M. K. Bellus 1947-8-28 s.n. Butte Afton Road, northwest of Biggs.; 0 Comment
  CHSC50319  Scleranthus annuus subsp. annuus Vernon Oswald; Lowell Ahart 1990-5-29 4265 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  NY415670  Scutellaria austiniae Mrs. C. C. Bruce 05 1898 1835 Butte Butte Creek Comment
  CHSC43848  Scutellaria californica B. Castro 1987-5-18 109 Butte Approx. 9 mi ne of Chico, ca 1/2 mi e of Hwy 32 via Altatina Dr. 426 Comment
  CHSC78151  Scutellaria californica Lowell Ahart 2000-5-31 8412 Butte On a steep grassy tree covered slope, east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 304 Comment
  CHSC51234  Scutellaria siphocampyloides Lowell Ahart 1977-5-20 1388 Butte Growing on the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CHSC85403  Scutellaria tuberosa John Dittes; Josephine Guardino 1992-5-7 481 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
  CHSC87419  Scutellaria tuberosa R. D. Fischer 2004-3-13 109 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Humboldt Trail. 434 Comment
  UC1609162  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1993-3-24 5240 Butte e side of Dry Creek Canyon (n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek, 2 mi n of Pentz Road) 274 Comment
  CAS-BOT-BC415021  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  RSA32758  Sedella pumila A. A. Heller 1938-4-22 15042 Butte About 9 miles north of Chico along U, S. Highway 99E. Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  CHSC31078  Sedum spathulifolium Herb Allen McLane 1980-4-25 9 Butte 10 ft s of Ponderosa Way, Plumas National Forest. 487 Comment
  CHSC28876  Selaginella hansenii M. S. Taylor 1980-3-1 2346 Butte Overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC7038  Selaginella hansenii Bryan C. Willingham 1969-2-23 25 Butte Ca 1/2 mi e of Big Chico Creek to s side of Hwy 32 and ca 1 1/2 mi n of Tenmile House site. 539 Comment
  SEINET10530437  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2330 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  JEPS89349  Senecio Dean W. Taylor 1997-4-9 15967 Butte along Hwy. 70 ca. 2 rd. mi. w. of bridge over the river at Pulga (Feather River Canyon, Plumas Nat'l Forest); Sierra Nevada (nSNF), Plumas Nat'l Forest, Feather River Ca 579 Comment
  CAS-BOT-BC363282  Senecio aronicoides A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  LA204252  Senecio integerrimus var. major E. B. Copeland; 1929-7-14 498 Butte Jonesville 502 Comment
  NY233355  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CHSC109666  Senecio sylvaticus Lowell Ahart; S. Bazell, J. Guardino, W. Dempsey, J. Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 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
  CAS-BOT-BC364274  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  CHSC31592  Senecio vulgaris L. Ahart 1974-3-12 316 Butte In garden. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4118  Senecio vulgaris R. Carter 1966-4-2 325 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CAS-BOT-BC364545  Senecio vulgaris Lowell Ahart 1980-5-4 2155 Butte Thermalito 65 Comment
  CHSC45226  Sequoiadendron giganteum Lowell Ahart 1961-12-11 1 Butte On the Chico State College campus, Chico. 60 Comment
  CHSC34158  Sericocarpus oregonensis Lowell Ahart 1981-8-31 3053 Butte S of the jct of Black Bart Rd and Oroville-Forbestown rd, ca. 10 mi W of Forbestown. 750 Comment
  CDA33330  Sesbania punicea K. Filippini 2010-6-1 PDR# 1463761 Butte Feather River Park, Oroville Recreation Park Pond, adjacent to Feather River. 0 Comment
  SEINET10509037  Setaria geniculata Mary Susan Taylor 1977-10-10 Taylor 1509 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 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
  RSA724851  Setaria parviflora L. Ahart 2006-9-28 13383 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
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  CHSC69740  Setaria pumila Lowell Ahart 1997-10-24 7936 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  UC1563269  Setaria pumila unknown 1990-10-21 6638 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  CDA42919  Setaria viridis L. Ahart 2012-8-1 18416 Butte On the northeast side of Bidwell Mansion, on the southwest side of the parking area, Bidwell Mansion, Chico. Comment
  CHSC34225  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70 (Feather River Hwy), ca. 4 air mi NW of Oroville. (center of sec 26). 91 Comment
  SEINET10448358  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  CHSC34955  Sidalcea asprella J. D. Jokerst; R. A. Schlising 1979-5-18 3408 Butte North of Oroville and Table Mt., 1.75 miles S of Cherokee Historical Site on Cherokee Road. Comment
  CHSC29409  Sidalcea calycosa R. A. Schlising 1980-6-1 3612 Butte S of Paradise at Kunkle Res., off Magalia Hwy. 440 Comment
  HSC85994  Sidalcea calycosa subsp. calycosa J. Hunter 1986-3-30 38 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  JEPS97960  Sidalcea diploscypha K. Andreasen 1998-6-30 277 Butte SW side of pond at end of Long Bar Rd., S side of Thermalito Diversion Pool Lake Lake Oroville State Recreation Area Comment
  CHSC37281  Sidalcea gigantea M. S. Taylor 1982-8-16 4996 Butte At seep and creek crossing road to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. 1645 Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  UC1609283  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte 6 air mi ne Feather Falls (w of the bridge across Fall River, large bar along Fall River); ne of Feather Falls, along Fall River 1036 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  SEINET10937544  Sidalcea malviflora subsp. celata Mary Susan Taylor 1978-7-21 Taylor 1834 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  NY43505  Sidalcea oregana S. Bianco 1995-10-19 1044 Butte E side of Concow Rd, ca. 0.8km S of Hoffman Rd, on S side of creek 760 Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  CHSC44387  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10537492  Silene antirrhina Lowell Ahart 1985-5-31 Ahart 5032 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC37280  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CHSC11855  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville. Near 'the Summit. 2100 Comment
  CHSC219  Silene gallica M. Roberson 1956-5-14 Butte S.W. of Paradise, along Skyway. 426 Comment
  CHSC99664  Silene gallica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  UCD80220  Silene gallica CNPS SN Foothill Team 2005-5-4 SNFN 0201 d Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  CDA3456  Silene vulgaris M. S. Bergseng, L. C. McCorkindale 1959-5-22 2441 Butte Yankee Hill Area. 0 Comment
  CHSC31598  Silybum marianum L. Ahart 1975-6-5 786 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113307  Sinapis arvensis Lowell Ahart 2014-4-16 19376 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC484  Sinapis arvensis G. Spurlock 1935-5-20 Butte Chico. Orchards and grainfields. 57 Comment
  CAS-BOT-BC75278  Sisymbrium officinale Lowell Ahart 1989-5-23 6247 Butte Along the edges of Avocado Road, about 0.5 mile west of the Oroville Bangor Highway, about 1 mile northwest of Bangor. 213 Comment
  UC600564  Sisyrinchium bellum H. F. Copeland 1920-7-29 465 Butte Jonesville Comment
  POM107995  Sisyrinchium bellum C. C. Bruce 1897-05 2067 Butte Iron Canyon. Comment
  UC600466  Smilacina racemosa E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC38883  Smilax californica Vernon Oswald 1983-5-11 468 Butte Upper Bidwell Park, Chico, bordering the golf course s of Chico Creek and e of the footbridge. 91 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
  CHSC47513  Solanum americanum Lowell Ahart 1989-11-12 6403 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  JEPS124146  Solanum americanum Lowell Ahart 2015-11-7 20631 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
  CHSC77027  Solanum elaeagnifolium David Scofield Wilson 1996-10-8 Butte In the city of Chico: roadside at the southwest corner of Manzanita Avenue and Centennial Avenue. 82 Comment
  CHSC42429  Solanum parishii Lowell Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  HSC97107  Solanum parishii L. Ahart 2006-5-19 12633 Butte W side of Bardees Bar Rd., S of small stream, .25 mi. SW of the bridge across the N Fork of the Feather River, 2.75 mi. SW of Pulga 406 Comment
  SEINET10546687  Solanum parishii Mary Susan Taylor 1981-5-22 Taylor 3797 Butte T23N R5E nw/se sec 30, Pulga quad. Around large landing on saddle of ridge running SE from Flea Mt, above Pulga, ca. 5 air mi E of Magalia. 3600 ft. 1097 Comment
  CDA6222  Solanum scabrum W. Sauer, L. Heinricks 1974-9-11 Butte Stirling City. 0 Comment
  CHSC48198  Solidago velutina subsp. californica Vernon Oswald 1985-9-2 1937 Butte Flea Valley--Sawmill Peak Rd. (V-line) 1.8 mi w of Flea Valley. 1066 Comment
  CHSC101686  Soliva sessilis Lowell Ahart 2009-5-8 15655 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  UCD136130  Sonchus asper subsp. asper E. M. Johnston 1915-1 W- 139 J Butte Biggs. Comment
  CHSC6086  Sonchus oleraceus B. Wilson 1968-4-17 153 Butte NE of Greenhouse, CSC campus. 59 Comment
  CHSC8152  Sonchus oleraceus K. Henegar 1969-5-15 82 Butte Cohasset Road, 1/2 m s of Chico Municipal airport; along w side of road. Comment
  CHSC9344  Sorghum halepense B. Anthony 1968-5-8 513 Butte 2 miles E. of Hamilton City, Hwy. 32. Comment
  RSA129483  Sorghum halepense H. S. Yates 1936-8-14 6124 Butte 10 miles S. of Durham 30 Comment
  SEINET5319143  Sorghum halepense R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC51876  Spartium junceum L. P. Janeway 1988-6-5 2733 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC114168  Spergularia bocconi Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16792 A Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CHSC33675  Spergularia bocconi L. Ahart 1981-5-16 2799 Butte Along edge of dirt roads on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC66074  Spergularia bocconi Vernon H. Oswald 1996-5-22 7622 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On a bank along the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  CAS-BOT-BC390129  Spergularia bocconi Lowell Ahart 1978-4-18 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC149642  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  CHSC33639  Spiraea douglasii M. Merryman; R. Banchero 1979-9-2 31 Butte Humboldt Rd at Butte Creek, 5.3 mi ne of jct Hwy 32 and Humboldt Rd. At streamside. 1341 Comment
  SEINET10938417  Spiranthes romanzoffiana Mary Susan Taylor 1978-1 Butte Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  UC884348  Stachys ajugoides var. rigida A. A. Heller 1915-5-28 11907 Butte near Cohasset; Sierra foothills Comment
  SEINET10498819  Stachys palustris subsp. pilosa Lowell Ahart 1983-8-16 Ahart 4288 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC43645  Stachys pycnantha B. Castro 1987-8-29 211 Butte Several feet from s edge of Butte Ck, ca 1/2 mi e of Hwy 99 crossing ca 2.1 mi s of Skyway in Chico. 68 Comment
  SD6179  Stachys rigida var. rigida E. B. Copeland 1930-7-20 Butte Jonesville 1500 Comment
  RSA452234  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
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Feb 18 2009
  RSA739620  Stellaria borealis subsp. sitchana L. P. Janeway, David Toren, Chris Christofferson, Heather Koeth, Duryea Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada, Plumas National Forest, along Coon Creek about 100m NE of Rogers Cow Camp campground, about 500 m W of Oroville Quincy Hwy. 1234 Comment
  UCD99315  Stellaria longipes subsp. longipes E. B. Copeland Jun and Jul 1931 s.n. Butte Jonesville. 1500 Comment
  CHSC63810  Stellaria longipes var. longipes S. C. Morey 1983-8-1 665 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC114950  Stellaria nitens Lowell Ahart 2015-3-14 19952 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 302 Comment
  CHSC29990  Stellaria nitens L. Ahart 1980-3-26 Butte E of the cemetery, ca. 1/2 mi e and 1/4 mi s of Hurleton. 600 Comment
  CHSC96226  Stellaria nitens R. Fischer 2006-4-25 973 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  UC1609205  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  CAS-BOT-BC181449  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Gravel bars on Butte Creek, Jonesville 1500 Comment
  CHSC116153  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte On the west side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  CAS-BOT-BC375763  Stephanomeria virgata Lowell Ahart 1981-7-18 2939 Butte 4.5 miles southwest of Oroville 35 Comment
  CAS-BOT-BC375765  Stephanomeria virgata John Thomas Howell 1961-9-22 36741 Butte Bottom of Feather River, Oroville 53 Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10506971  Stipa Mary Susan Taylor 1981-5-14 Taylor 3718 Butte T22N R6E sw sec 16, Pulga SE quad. S side of 23N00.2 in open landing area and edge of Yellow Pine Forest, ca. 2 mi SW of Merrimac. 3700 ft. 1128 Comment
  CHSC113959  Stipa stillmanii Lowell Ahart 2014-7-7 19567 Butte Along the east side of the Skyway, about one mile south of Inskip. 1449 Comment
  HSC103798  Streptanthus L. Ahart 2006-7-16 12958 Butte North side of Humboldt Road, ~1.5 mi. air miles SW of Butte Meadows. 1436 Comment
  JEPS118610  Streptanthus longisiliquus Matt Simenc, Sarah Starkey and Tim Hanson 2010-7-8 s.n. Butte Northern High Sierra Nevada. Along a 2008 wildfire-supression dozer line just southwest of (above) Rim Road (Ponderosa Way) 1.0 road miles southeast of Concow Road, northern end of Rocky Ridge. Pulga 7.5' quad. Comment
  CHSC40446  Streptanthus polygaloides Lowell Ahart 1985-5-15 4975 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  JEPS34385  Streptanthus polygaloides Rimo Bacigalupi and P. C. Hutchison, J. K. Wright 1963-6-1 8861 Butte 0.75 mi. s. Pulga (cliff above side rd. off U.S. Hwy. 40 in canyon of N. Fork Feather R., n. base of grade over Jarbo Gap, just before bridge across Feather R.); canyon of N. Fork Feather R. 426 Comment
  CAS-BOT-BC87443  Streptanthus polygaloides Walter S. Lennon 1974-1-1 s.n. Butte Sierra Nevada. Near Pulga. Comment
  POM117399  Streptanthus polygaloides C. C. Bruce 1897-04 1942 Butte Nelson s bar. Comment
  UCD116282  Streptanthus tortuosus Robert E. Preston 1984-4-21 433 Butte 8 km north of Oroville, North Table Mountain. 396 Comment
  SEINET10448523  Streptanthus tortuosus Mary Susan Taylor 1976-4-24 Taylor 1071 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  HSC96692  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte N High Sierra Nevada, 0.6 km E of Concow Rd., 1.1 km NE of Rag Dump, 3.8 mi. N of Flea Mtn. 1248 Comment
  JEPS108580  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of S end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km S of Kimshew Point. 1317 Comment
  SEINET10940278  Styrax officinalis var. fulvescens Mary Susan Taylor 1978-7-21 Taylor 1837 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CAS-BOT-BC48056  Styrax redivivus John Thomas Howell 1967-6-22 42643 Butte Canyon of the North fork of Feather River, 3 miles northeast of Pulga Bridge. Comment
  SEINET11933193  Suaeda nigra Unknown 1983-1 4452 Butte ca 0.12 mi S of the Graylodge Wildlife Refuge HQ, ca 12 mi SW of Gridley 35 Comment
  CAS-BOT-BC269532  Symphoricarpos albus var. laevigatus Clarence R. Quick 1952-6-30 52 -101 Butte Big Bar Mt., east of Pulga Comment
  CAS-BOT-BC234614  Symphoricarpos mollis E. B. Copeland 1930-7-7 s.n. Butte Jonesville 1600 Comment
  CHSC69666  Symphyotrichum chilense Vernon H. Oswald 1982-8-20 Butte Upper Bidwell Park, Chico, near the east end of Centennial Ave. 85 Comment
  CAS-BOT-BC99039  Symphyotrichum cusickii E. B. Copeland 1930-8-26 487 Butte Jonesville 1500 Comment
  JEPS117382  Symphyotrichum spathulatum Lowell Ahart 2010-9-21 17226 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC50403  Symphytum officinale Vernon Oswald 1990-6-10 4286 Butte Hwy 32 at Lomo (jct. Humboldt Rd to Butte Meadows). At the base of a bank on the west edge of the pullout on Hwy 32. 1158 Comment
  CHSC90634  Tamarix parviflora Lowell Ahart 2005-4-2 11697 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
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 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 Comment
  CHSC45776  Tanacetum parthenium Vernon Oswald 1985-8-1 1917 Butte P-Line between Stirling City and Five Corners, 0.4 mi s of the bridge over W. Branch Feather R. Near a stream. 804 Comment
  CHSC99558  Tauschia kelloggii L. P. Janeway 2008-5-26 9390 Butte Northern High Sierra Nevada. Low ridge near saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  HSC72761  Tauschia kelloggii M. S. Taylor 1981-4-8 3517 Butte Plumas NF; Between Ponderosa Way & Concow Road, ~.10 mi. S of their junction, 2 mi. N of Lake Concow. 976 Comment
  UC1134373  Taxus brevifolia P. L. Johannsen 1936-8-12 981 Butte 0.75 mi nw of junc of Chico and Campbell Cr.; Paynes Creek Quad. 640 Comment
  SEINET10471597  Taxus brevifolia Austin AUSTIN 755 Butte Mountains north of Chico, Butte County. Comment
  CAS-BOT-BC445889  Tellima grandiflora A. A. Heller 1938-5-28 15127 Butte Along Highway #24, 2 miles east of Pulga, in the Arid Transition Life Zone. Comment
  CHSC46149  Tetrapteron graciliflorum Lowell Ahart 1976-4-11 1059 Butte Along a wash, Peter Ahart Ranch, about 1 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC111386  Thalictrum fendleri var. polycarpum Lowell Ahart 2012-4-30 17946 A Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC62901  Thalictrum fendleri var. polycarpum Vernon H. Oswald; Lowell Ahart 1994-3-19 5999 Butte Beatson Hollow on North Table Mtn., ca. 2 mi W of Cherokee Rd. In drainage entering Campbell Creek. 274 Comment
  SEINET10480704  Thysanocarpus Mary Susan Taylor 1981-5-7 Taylor 3642 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CAS-BOT-BC88199  Thysanocarpus curvipes A. A. Heller; H. E. Brown 1902-5-12 5528 Butte Berry Canyon (near Clear Creek). Comment
  CHSC3598  Thysanocarpus curvipes Gerry Carrauthers 1966-2-28 31 Butte Ca. 3 mi N.E. of Bidwell Golf Course and ca. near Salmon Hole of Chico Creek. 8 mi N.E. of city of Chico. Comment
  CHSC39778  Thysanocarpus curvipes G. K. Mead 1976-4-14 18 Butte Ca. 10 ft from S side of Honeyrun Road and 15.6 mi ESE Chico. 137 Comment
  UC857556  Thysanocarpus curvipes A. A. Heller 1915-5-25 11899 Butte Mt. Ida ranch 10 mi e Oroville; Sierra foothills 457 Comment
  SEINET10448591  Thysanocarpus curvipes Mary Susan Taylor 1982-5-2 Taylor 4389 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
  CHSC35745  Thysanocarpus curvipes var. elegans R. E. Preston 1982-4-25<