Search Results — 2000 specimen records retrieved (1602 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC331607  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  CAS-BOT-BC331611  Acer macrophyllum Lowell Ahart 1982-5-8 3409 Butte Near the Forbestown Res. About 1 mile SW of the Forbestown Res., about 4 miles NE of Forbestown. 800 Comment
  CHSC44463  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte along a dirt road west of the Poe Power House, east of the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC3860  Acer palmatum Gary Dutton 1966-4-13 208 Butte CSC; South side of admin. bld. In front lawn. Chico Comment
  SEINET10971290  Achillea Mary Susan Taylor 1981-5-21 Taylor 3764 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
  CHSC25443  Achillea millefolium Marc Hayes; Warner 1977-9-11 82 Butte Along Butte Meadows Rd. (Humboldt Rd) below Jonesville, exactly 9.2 mi from junction with Hwy 32, near piped spring adjacent Cherry Hill campground. 1280 Comment
  CHSC42447  Achnatherum lemmonii Lowell Ahart 1987-5-9 5583 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  SEINET5585614 Image available Achnatherum lettermanii E. B. Copeland 1929-1 342 Butte Jonesville 1550 Comment
  CHSC94138  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1127 Comment
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
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Jun 8 2012
  CHSC94126  Achnatherum stillmanii Lowell Ahart 2006-6-24 12852 Butte On the east side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  CHSC38316  Achyrachaena mollis Vernon Oswald 1983-4-20 354 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  CHSC886  Acmispon americanus var. americanus V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC46221  Acmispon argophyllus var. fremontii Pauleen Broyles 1987-6-19 1056 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  CHSC50667  Acmispon argophyllus var. fremontii Lowell Ahart 1990-5-25 6482 Butte Near 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. 274 Comment
  JEPS98263  Acmispon argophyllus var. fremontii Lowell Ahart 2000-6-27 8516 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SBBG121600  Acmispon argophyllus var. fremontii L. Ahart 2007-5-29 13937 Butte E side of Bald Rock Dome on W side of the Dome Trail, ca. 2 mi (air) NE of Big Bald Rock, ca. 16 mi (air) NE of Oroville 585 Comment
  JEPS122005  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte Below the high water line of Lake Oroville, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CHSC879  Acmispon parviflorus A. Koopman 1929-4-21 Butte Near Pentz. 152 Comment
  CHSC40418  Acmispon strigosus Lowell Ahart 1985-5-31 5034 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  SD1731  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville, moist glades and thickets 1500 Comment
  CAS-BOT-BC418782  Aconogonon phytolaccifolium A. A. Heller 1914-8-8 11672 Butte At Jonesville 1524 Comment
  CAS-BOT-BC29851  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC133127  Adenostoma fasciculatum Ella Dales Cantelow 1940-5-10 4293 Butte E. of Oroville, Old road to Bucks Lake Comment
  CHSC48839  Adenostoma fasciculatum Vernon Oswald 1986-5-6 1994 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CAS-BOT-BC69659  Adiantum aleuticum Lowell Ahart 1980-9-10 2635 Butte 3 mi. ne. of Milsap Bar. 1100 Comment
  UC1481724  Adiantum capillus-veneris H. M. Hall 1914-7-7 9754 Butte Honey-Run Grade 304 Comment
  CHSC106576  Adiantum jordanii C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC21827  Adiantum jordanii B. L. Wiley 1975-4-4 5 Butte Ca. 100 yds s of Butte Creek and 0.4 mi w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  CHSC23644  Adiantum jordanii M. S. Taylor 1976-4-4 1059 Butte On s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  CHSC41132  Adiantum jordanii R. A. Hunt 1976-4-28 1 Butte Ca. 1 km n on Helltown Rd on steep embankment on e side of road. Ca. 18.5 km ene of CSU@Chico on course 66 degrees 30 minutes. In Butte Canyon ca. 1 km n of junction of Helltown Rd. and Humbug Rd. 225 Comment
  SEINET10470272  Adiantum jordanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4172 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CDA1674  Aegilops triuncialis L. Ahart 2000-5-16 8357 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CHSC77486  Aesculus californica Anna Pinsky 1997-4-24 17 Butte Chico, Upper Bidwell Park, Salmon Hole, 100 ft. above Big Chico Creek, on grassy hill between large rock outcrops. Comment
  UC138055  Aesculus californica Mrs. R. M. Austin May 1896 134 Butte Little Chico Creek Comment
  CHSC46609  Agoseris glauca var. monticola Vernon H. Oswald 1989-7-27 3898 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CAS-BOT-BC22967  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC13345  Agoseris retrorsa Lowell Ahart 1987-5-9 5603 Butte Along Pulga Road about 2 mi SW of Bardees Bar along the North Fork of the Feather River, about 4.5 mi SW of Pulga 365 Comment
  CHSC87538  Agoseris retrorsa R. D. Fischer 2004-4-20 133 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Humboldt Trail, approx. midway. 411 Comment
  CAS-BOT-BC447798  Agrimonia gryposepala Sally Bianco 1995-8-30 1023 Butte NE margin of Concow Lake near Hoffman Rd. off Concow Rd. Peninsuka between creek and lake 670 Comment
  CHSC31730  Agrostis avenacea L. Ahart 1977-4-29 1335 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10855011  Agrostis avenacea Lowell Ahart 2008-5-21 Ahart 14779 Butte T20N, R6E, southwest 1/4 Section 33. Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, about 1.4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET3916089  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte At intersection of Palermo Rd. & S.R. 70 ca. 4 mi. south of Oroville. Represents possible range extension.; 0 Comment
  UC1562427  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte e Enterprise Boat Launch Area (about 1/8 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 259 Comment
  CHSC34033  Agrostis exarata L. Ahart 1981-7-7 2916 Butte Ca. 1 mi s of the Oroville Forbestown Rd on the Hurleton Swedes Flat Rd. 600 Comment
  JEPS104036  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  CAS-BOT-BC139437  Agrostis hyemalis A. A. Heller 1914-7-23 11613 Butte In Chico Meadows. 1219 Comment
  CHSC43171  Agrostis idahoensis Robert Banchero 1981-7-18 601 Butte Ca 0.3 mi e of jct Jonesville Rd and Scotts-John Rd. 1749 Comment
  JEPS107754  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In 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
  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
  CAS-BOT-BC139079  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles southwest of Forbestown. 670 Comment
  CHSC107924  Agrostis pallens L. P. Janeway 2011-7-18 10516 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.3 km northeast of the trailhead, 1.1 air km south-southeast of Bald Rock Dome. Along top of northeast-trending ridge, often abundant along edges of the trail. 725 Comment
  CAS-BOT-BC138642  Agrostis stolonifera Lowell Ahart 1988-9-4 6178 Butte Near Big Kimshew Creek, about 1 air mile northeast of Jones Meadow. 1920 Comment
  UC1564767  Agrostis variabilis V. Oswald and L. Ahart 1989-8-22 3958 Butte ca 3.5 mi (air) se Jonesville (Butte Creek House Meadow on e side Humbug Road); Butte Creek House Meadow 1767 Comment
  JEPS122219  Alisma lanceolatum Lowell Ahart 2014-4-25 19405 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  JEPS88257  Alisma plantago-aquatica Vernon H. Oswald and Lowell Ahart 1996-6-10 7764 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (along edge of slough near center of e side of Tract 5, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  CAS-BOT-BC445431  Alisma triviale Lowell Ahart 1972-7-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC85425  Allium amplectens John Dittes 1992-5-5 467 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  UC767479  Allium amplectens R. F. Hoover 1938-4-24 3246 Butte 3 mi n Chico Comment
  SEINET10472028  Allium amplectens Mary Susan Taylor 1981-5-21 Taylor 3769 A 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
  SEINET3883765  Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy. #70, 4.4 mi. s. of the Oroville Dam Exit (Hwy. #126).; 0 Comment
  UCSB63599  Allium amplectens Hess, Vineca 1986-4-12 Butte Ridge n of Horseshoe Lake, vic. Chico Municipal Golf Course 91 Comment
  UC600453  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville 1524 Comment
  UC843257  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along Feather River Highway); Feather River Highway 609 Comment
  SEINET12053527  Allium lacunosum Unknown 4 s.n. Butte Butte Comment
  POM169466  Allium membranaceum Kate Conger s.n. Butte Brush Creek Comment
  SEINET10872298  Allium membranaceum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4698 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  HSC66173  Allium obtusum var. obtusum M. S. Taylor 1980-5-27 2695 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  NY334882  Allocarya charaxata var. debilis E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  SEINET10969174  Allophyllum gilioides Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4163 Butte T21N R6E ne sec 29. Along sides of Bean Creek Rd, ca. 0.5 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC40002  Allophyllum integrifolium Lowell Ahart 1983-8-16 4298 Butte On the high banks of a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  UC119258  Alnus rhombifolia Mrs. R. M. Austin May 1885 Butte Butte Creek Comment
  RSA715579  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC40899  Amaranthus albus Lowell Ahart 1985-11-7 5228 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  JEPS115051  Amaranthus californicus Lowell Ahart 2007-11-3 14572 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  CHSC95142  Amaranthus deflexus R. D. Fischer 2005-9-14 858 Butte Paradise, CA. Northern Sierra Nevada foothills, lower Paradise, at a residence on Black Olive Street. 365 Comment
  CHSC66656  Amaranthus retroflexus Vernon Oswald 1996-7-17 8066 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Along the farm road at Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  SEINET10971204  Ambrosia psilostachya var. californica Mary Susan Taylor 1977-8-19 Taylor 1505 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  CAS-BOT-BC136691  Amelanchier alnifolia var. pumila Lowell Ahart 1980-5-19 2315 Butte Near bridge, South Fork of Feather River 800 Comment
  CHSC42098  Ammannia coccinea Lowell Ahart 1986-11-9 5442 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
  CHSC47437  Ammannia coccinea Lowell Ahart 1974-11-9 676 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA6525  Ammannia coccinea Jens Clausen 1932-9-16 658 Butte 20 miles south of Chico, between Richvale & Nelson Comment
  CHSC32138  Ammannia robusta L. Ahart 1974-9-8 631 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET13711410  Ammannia robusta Lowell William Ahart, Lowell William Ahart 1999-1 8168 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  RSA0090972  Amsinckia A. A. Heller 1941-4-19 16069 Butte Crest of the hills west of Willows. Comment
  CHSC101256  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  HSC96898  Amsinckia intermedia L. Ahart 2005-4-14 11700 Butte Gridley, N of Spruce St., E of the railroad tracks 28 Comment
  JEPS107293  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS108925  Amsinckia intermedia Lowell Ahart 2006-4-23 12532 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 424 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
  CHSC60659  Amsinckia lycopsoides Vernon H. Oswald 1993-4-11 5254 Butte Cana-Pine Creek Rd. bordering the W side of the Wurlitzer Unit of Vina Plains Preserve, near the NW corner of Butte County. 57 Comment
  CHSC62554  Anagallis arvensis L. P. Janeway 1993-5-2 4341 Butte Foothill woodland adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC116707  Anagallis minima Lowell Ahart 2016-5-15 20832 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC38784  Andropogon glomeratus var. scabriglumis Vernon Oswald 1982-10-22 1 Butte Bidwell Park, Chico. Near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi e of its junction with Wildwood Ave. 121 Comment
  UCD56079  Andropogon virginicus Eldon F. Azevedo 1952-10-8 s.n. Butte Oroville. Comment
  JEPS114197  Andropogon virginicus var. virginicus L. P. Janeway 2007-12-17 9225 Butte Northern Sierra Nevada Foothills. Along the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68 m elevation level), about 370 m north the railroad bridge. 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
  CHSC42565  Angelica californica Vernon Oswald 1985-7-15 1902 Butte Ponderosa way (Rim Rd.) 3.1 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  CHSC28169  Antennaria rosea J. D. Jokerst 1979-7-2 299 Butte Near summit of Humboldt Peak on N facing slope. Comment
  CAS-BOT-BC84690  Anthemis cotula Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC1951  Anthriscus caucalis A. Goekler 1929-4-25 Butte Chico. 57 Comment
  SEINET10832445  Antirrhinum breweri Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4174 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC48969  Antirrhinum cornutum Vernon Oswald 1986-7-22 2216 Butte Hwy 32, 1.2 mi n of Chico Creek near the spring. 1097 Comment
  CHSC98662  Antirrhinum cornutum B. Castro; L. P. Janeway 2005-8-3 1511 Butte Ca 20 air mi NNE of Oroville and 1.2 mi S of Flea Mtn, along Concow Rd ca 0.1 mi N of its jcn with Rim Rd. Along narrow path under power lines just W of Concow Rd, in small openings. 1002 Comment
  CHSC1685  Antirrhinum vexillo-calyculatum subsp. intermedium E. Walker 1932-7-26 Butte Magalia Heights. 762 Comment
  CHSC12926  Aphyllon epigalium subsp. epigalium K. D. Cox 1974-6-16 190 Butte Vilas Rd., 5.4 mi. S of Cohasset rd. N. of Chico. Comment
  CHSC47451  Aphyllon purpureum Lowell Ahart 1974-3-18 332 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC20487  Apocynum androsaemifolium M. S. Taylor 1975-6-30 812 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC38260  Apocynum cannabinum Vernon Oswald 1983-6-2 604 Butte Upper Bidwell Park, Chico, at the e end of Yahi Trail. 207 Comment
  UCD121510  Apocynum cannabinum L. Ahart 1977-6-13 1414 Butte Peter Ahart Ranch, Honcut. North Honcut Creek. 50 Comment
  CHSC108826  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC90946  Arabidopsis thaliana Lowell Ahart 2005-4-18 11742 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
  POM180839  Arceuthobium abietinum Unspecified 1928-8-14 759 Butte Neighborhood of Jonesville. Near Butte Creek, above Jonesville. 1524 Comment
  CHSC46568  Arceuthobium americanum Vernon H. Oswald 1989-7-4 3839 Butte Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  SEINET10969532  Arceuthobium campylopodum Mary Susan Taylor 1975-9-19 Taylor 911 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC4463  Arctostaphylos C. Glascock 1965-2-6 203 Butte 0.4 mi W of Grand View Cafe and station. Ca. 60 yds canyonward from Hwy 40a at side of a jeep trail. Comment
  NY9760  Arctostaphylos A. A. Heller 1928-1-17 14473 Butte About a mi below the Ten Mile House E of Chico, in red clay in the Upper Sonoran life zone. Comment
  RSA633012  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52247  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51565 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38867  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte At Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC109112  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  CHSC67925  Arctostaphylos manzanita subsp. manzanita James D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1682 Butte Top of N. Table Mtn. at its NW corner. Comment
  POM210201  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 s.n. Butte Humboldt Grade, about 12 miles from Chico. Comment
  RSA122404  Arctostaphylos manzanita subsp. manzanita J. E. Sowder 1933-11-27 134 Butte 2 mi. N. 1/4 mi. E. of Hog Spring. 335 Comment
  CHSC48373  Arctostaphylos mewukka subsp. truei Vernon Oswald 1985-2-28 1682 Butte Near Coutolenc Rd. ca. 0.1 mi N of the Skyway on the N edge of the Magalia Serpentine. Comment
  CAS-BOT-BC45568  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge e. of the Summit. 2100 Comment
  UC478486  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte ridge e the Summit; Jonesville 2100 Comment
  JEPS46195  Arctostaphylos patula Duncan Dunning 1921-8-1 Butte near West Branch; Lassen <National> Forest, Big Chico Creek Comment
  POM209917  Arctostaphylos patula H. F. Copeland 1932-6-29 A- 7 Butte The Summit, Jonesville. Comment
  RSA0074194  Arctostaphylos truei Gladys L. Smith 1975-4-9 s.n. Butte Magalia. Comment
  SEINET11989217  Arctostaphylos truei J. T. Howell 1975-1 51090 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47377  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51102 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CDA42419  Arctostaphylos viscida subsp. viscida D. G. Kelch 2012-9-19 12 .362 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CHSC108865  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC27932  Arctostaphylos viscida subsp. viscida M. S. Taylor 1976-4-24 1074 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville. 997 Comment
  JEPS118409  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-7-9 17565 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  SEINET10537446  Arenaria Mary Susan Taylor 1981-5-21 Taylor 3793 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  CHSC78553  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 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
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  CAS-BOT-BC400431  Aristolochia californica John Thomas Howell 1959-9-20 34616 Butte Flats along Feather River about 1 mile west of Oroville 45 Comment
  CHSC78059  Aristolochia californica Caleb E. Casey 1999-2-4 Butte Upper Bidwell Park, bluffs on south side over Bear Hole. 365 Comment
  RSA416042  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honeyrun road, 1/2 mile west of Paradise 579 Comment
  CHSC45778  Arnica dealbata Vernon Oswald 1984-7-2 1332 Butte Intersection of Skyway (Bull Hill Rd.) and Humbug Rd. 1584 Comment
  CAS-BOT-BC90285  Artemisia douglasiana A. A. Heller 1928-6-20 14693 Butte Butte Meadows, along Butte Creek Comment
  NY43502  Artemisia douglasiana S. Bianco 1995-8-26 1021 Butte Concow area, E of Concow Rd, along Kakini Rd 762 Comment
  CHSC38787  Arundo donax Vernon Oswald 1983-10-8 1053 Butte Upper Bidwell Park, Chico, at the retaining wall at the east end of Centennial Ave. 85 Comment
  CAS-BOT-BC400634  Asarum hartwegii A. A. Heller 1915-4-12 11809 Butte Near Cohasset Comment
  CHSC51849  Asclepias fascicularis L. P. Janeway 1988-6-5 2732 Butte Cyn of Big Chico Cr ca 1 me NE of the end of Upper Park Rd. 213 Comment
  JEPS118287  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 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
  CHSC51850  Asclepias speciosa L. P. Janeway 1988-6-5 2728 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  SEINET10741574  Asclepias speciosa R. M. Austin 1896-1 Austin 231 Butte Colby Comment
  SEINET11716736  Aspidotis californica M. S. Taylor 1980-1 2356 Butte ca 0.25 mi SW of lower Forbestown Rd, ca 3 mi W of Forbestown 396 Comment
  POM193102  Aster occidentalis var. occidentalis E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CHSC27665  Astragalus pauperculus Mike O'Bryan; Robert A. Schlising 1978-4-17 3220 Butte N of Forest Ranch, on ridge projecting into canyon of Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  CHSC65992  Astragalus tener var. ferrisiae Vernon H. Oswald 1996-5-9 7547 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC41769  Asyneuma prenanthoides Lowell Ahart 1974-10-22 669 Butte Along the road that crosses the South Fork of the Feather River, about 3/4 mile north of Golden Trout Crossing, west of the Sly Creek Dam. 762 Comment
  CAS-BOT-BC68692  Athyrium filix-femina var. californicum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi. ne of Stirling City. Pulga NW quad. 1463 Comment
  CAS-BOT-BC68691  Athyrium filix-femina var. californicum Lowell Ahart 1982-9-29 3836 Butte Along the edges and banks of Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, 1200 Comment
  CHSC11797  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC90603  Athysanus pusillus Susan E. Bigbee 1984-3-13 38 Butte Population ca. 50 yds s of Butte Creek and ca. 320 yds w of Covered Bridge, 6.2 mi ese of Chico. 120 Comment
  CHSC34770  Atriplex lentiformis L. Ahart 1981-11-6 3217 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UCSB64020  Atriplex micrantha Ahart, Lowell 1981-11-6 Butte Near the entrance to the Gray Lodge Waterfowl Management Area, west of Pennington Road, about 12 miles south-west of Dridley 30 Comment
  SEINET516428  Atriplex serenana Lowell Ahart 1981-1 3007 Butte Stem from a large plant, growing on dry bare soil, 1/10 mi W of Pennington Rd., on the N side of the rd. to the Gray Lodge Waterfowl Management Area Headquarters, about 12 mi. SW of Gridley. 30 Comment
  CAS-BOT-BC146180  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC117592  Avena fatua L. P. Janeway 2016-6-2 12106 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC33673  Avena fatua L. Ahart 1981-5-24 2835 Butte On Peter Ahart Ranch, ca. 2 mi n and 1/2 mi e of Honcut. 50 Comment
  CHSC46434  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Below the high water line of Lake Oroville, near the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CHSC116268  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC34148  Azolla filiculoides L. Ahart 1981-9-27 3214 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo R, ca. 4 mi ne of Palermo. 80 Comment
  CHSC64060  Azolla filiculoides B. Castro; L. P. Janeway, M. Halterman, C. Pidgeon 1987-10-17 247 Butte Graylodge Waterfowl Management Area, ca. 0.5 mi NW of the headquarters. 20 Comment
  JEPS107680  Azolla filiculoides Lowell Ahart 2005-4-14 11703 Butte East of the railroad tracks, in the stream at the railroad bridge, north of Spruce Street, Gridley 28 Comment
  CHSC45638  Baccharis douglasii Vernon H. Oswald 1987-7-23 3134 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the W end of Cana Rd. Between the S half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  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
  CHSC57219  Balsamorhiza deltoidea Vernon H. Oswald; Lowell Ahart 1992-3-24 4891 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.2 mi north of Burma Rd. 76 Comment
  CAS-BOT-BC27831  Balsamorhiza macrolepis H. E. Brown 1897-4-15 208 Butte Near Clear Crerek 53 Comment
  NY162467  Balsamorhiza macrolepis H. E. Brown 1897-5-1 208 Butte Near Clear Creek 53.3 Comment
  CAS-BOT-BC16378  Barbarea orthoceras Clarence Roy Quick 1963-7-16 63 48 a Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  SEINET10973580  Barbarea orthoceras Mary Susan Taylor 1978-6-24 Taylor 1654 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CHSC46870  Bassia hyssopifolia Vernon Oswald 1989-9-6 3979 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Soil piled in a waste area along the main north-south ranch road ca. 0.5 mi n of Gridley-Colusa Hwy. 18 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
  CHSC42057  Bergia texana Lowell Ahart 1986-11-9 5445 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
  CHSC97740  Bidens frondosa Lowell Ahart 2007-11-3 14570 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC43711  Bistorta bistortoides Vernon Oswald 1983-7-6 832 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CHSC31615  Blennosperma nanum Lowell Ahart 1975-4-2 739 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC32592  Blennosperma nanum var. nanum Linda M. Barker 1974-4-20 159 Butte Table Mtn., Central Valley 305 Comment
  HSC23358  Blennosperma nanum var. nanum L. Walk 1971-3-14 2 Butte E side of Cherokee Rd., ca. 0.7 mile S of Oregon City Junction and ca. 50 yards from the road 610 Comment
  CHSC33707  Boechera arcuata J. D. Jokerst 1981-5-21 1331 Butte Ca 1.0 mi NE of the town of Pulga. Comment
  JEPS117231  Boechera breweri subsp. shastaensis Lowell Ahart 2010-5-7 16612 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  CHSC88175  Botrychium minganense 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
  UC129449  Boykinia major Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC418407  Boykinia occidentalis Lowell Ahart 1985-6-30 5072 Butte East of dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 Comment
  SEINET11970738  Brassica nigra C. A. Walker 5 s.n. Butte no further locality Comment
  CHSC110132  Brassica rapa L. P. Janeway 2012-3-30 10803 Butte Sacramento Valley. West side of Hwy 99 1.6 km south of Estates Drive, south edge of Chico. 60 Comment
  CHSC3567  Brassica rapa R. D. Briggs 1966-2-20 32 Butte Three miles due south of Oroville Dam, on Olive Hwy. Comment
  CHSC10551  Briza maxima Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA768982  Briza maxima L. Ahart 2010-5-14 16636 Butte West side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 air miles northeast of Chico 376 Comment
  UCD57149  Briza maxima Beecher Crampton 1965-6-17 7385 Butte 2 miles northeast of Bangor, La Porte Road. Comment
  CHSC82265  Briza minor Lowell Ahart 2002-4-24 9537 Butte In a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CAS-BOT-BC482212  Brodiaea californica subsp. californica C. C., Mrs. Bruce 1893-5-1 2126 Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  CHSC117352  Brodiaea coronaria B. Castro; Sabrina Bell 2015-5-21 2044 Butte Sacramento Valley. Ca 1.6 air mi E of hwy 99 off eastern edge of Thermolito Afterbay, 1.16 mi Sof Hwy 162, along SW extension of Wilbur Rd (the Afterbay perimeter road). A few yards S of road. 43 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-BC484504  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte Hills 8 miles north of Oroville Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  SEINET8194052  Brodiaea purdyi A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon, near Clear Creek. Comment
  CHSC90988  Brodiaea sierrae Lowell Ahart 2005-5-11 11805 Butte Pasture field, south of Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  UCD139175  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte on the southeast side of the dirt road to the Forbestown reservoir, about 1 mile northeast of ForbestownRoad, about 2.5 miles (air) northeast of Forbestown. 883 Comment
  CHSC42905  Bromus carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS120812  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the E side of Black Bart Road, about 3/4 mile (by road) SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  CHSC34209  Bromus carinatus var. marginatus J. D. Jokerst 1981-8-1 1452 Butte N face of Humboldt Peak ca 200 feet NE of summit. Extreme N corner of Butte county. 2133 Comment
  UCD59169  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC42848  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UCD59302  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  CAS-BOT-BC155462  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC2132  Bromus hordeaceus H. Silberman; D. Isaac 1949-5-9 Butte W side of football field, CSC campus. Comment
  CHSC96549  Bromus hordeaceus L. P. Janeway 2006-4-30 8567 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  JEPS119865  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA30201  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 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
  CHSC101292  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC46437  Bromus madritensis subsp. rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  SACT000625  Bromus orcuttianus Herbert Copeland 1930-7-21 Butte in woods by butte creek common, small clumps 1524.0 Comment
  UC392233  Bromus orcuttianus E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  CAS-BOT-BC161959  Bromus rubens Peter H. Raven 1953-5-9 5436 Butte 7.2 miles from Bangor on Oroville Road. Comment
  CDA13897  Bromus sterilis G. F. Hrusa, T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS115954  Bromus sterilis Lowell Ahart 2009-4-26 15614 Butte East edge of a small meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  SEINET10507344  Bromus sterilis Lowell Ahart 1985-5-10 Ahart 4956 Butte 10 meters north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  RSA716560  Bromus tectorum L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek Comment
  SEINET3450781  Bromus tectorum Unknown 2003-5-9 10120 Butte Gridley, Gridley, about 3 miles by air southwest, on the south side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  UC1594605  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte about 4 mi s of Oroville (along w side of Lone Tree Road, about 1/4 mi s of intersection of Powerhouse Hill Road and Lone Tree Road); Lone Tree Road 60 Comment
  CHSC44437  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 1/2 mi SE of Little Bald Rock. 975 Comment
  CDA5336  Bupleurum lancifolium Mackessy, L. L. Heinrichs 1963-6-19 Butte L. A. Balsley property, Route 1, Box 248, Oroville. 0 Comment
  CAS-BOT-BC185473  Calamagrostis canadensis Lowell Ahart 1987-10-17 5917 Butte Along the East Fork of the Last Chance Creek, about 0.5 mile northwest of Jones Meadow. 1676 Comment
  CHSC48003  Callitriche marginata Vernon Oswald 1987-4-7 2313 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch, e of Hwy 99. In ruts of a dirt track. 68 Comment
  JEPS117213  Callitriche marginata Lowell Ahart 2010-5-16 16687 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC38252  Calocedrus decurrens Vernon Oswald 1982-12-30 40 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 195 Comment
  CHSC49691  Calochortus leichtlinii Vernon H. Oswald 1983-8-17 983 Butte Humboldt Summit, ca 3 mi ne of Jonesville. Comment
  CHSC10725  Calochortus luteus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33143  Calochortus luteus J. D. Jokerst 1981-5-14 1324 Butte Top of North Table Mt ca 300 M north of Cherokee Rd at the west edge of the mountain. Comment
  CHSC7131  Calochortus luteus J. Borgstrom 1969-5-2 22 Butte Ca 6 mi s of Chico on 99E, 20 ft. off of w side of highway. 47 Comment
  HSC38106  Calochortus luteus Thomas W. Nelson, Jane P. Nelson 1976-5-9 2449 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC11053  Calochortus monophyllus Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC21262  Calochortus monophyllus M. S. Taylor 1973-4-10 28 Butte At end of Bidwell Park Rd, ca. 50 ft n of Big Chico Creek, Upper Bidwell Park, Chico. 274 Comment
  CHSC31356  Calochortus monophyllus Howard Paul 1980-3-30 2 Butte Ca. 0.25 mi nw of Humbug road on a large grassy ridge top, 2.5 mi ne of the Centerville cemetery, ca. 20 mi e of Chico. 457 Comment
  CAS-BOT-BC492601  Calochortus monophyllus Jim Riley 1923-4-2 s.n. Butte Richardson Spring Comment
  SD6501  Calochortus monophyllus Mrs. R. M. Austin Jul 1879 Butte Sutton House. Comment
  SEINET12046586  Calochortus monophyllus L. L. Pate 1978-1 64 Butte 0.1 mi E of Hwy 32, 9.3 mi E of Chico 439 Comment
  SEINET8197472  Calochortus monophyllus M. J. Williams 1967-4-22 s.n. Butte Between Oroville and Feather Falls. 244 Comment
  CHSC41463  Calochortus nudus Lowell Ahart 1986-7-2 5340 Butte North of the dirt road, 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CHSC67734  Calochortus tolmiei James D. Jokerst 1979-5-7 223 Butte Cohasset Hwy. 5.0 mi N of Chico Municipal Airport. 365 Comment
  CAS-BOT-BC494349  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling in fine gravel in open places in the yellow pine and Kellogg oak belt. 1072 Comment
  CHSC46838  Caltha leptosepala var. biflora Kirsten Tarp 1983-7-31 319 Butte Near Humbug Rd. between Butte Creek House and Snag Lake. At border of meadow. 1804 Comment
  CHSC53699  Caltha leptosepala var. biflora Kirsten Tarp 1983-8-12 346 Butte Philbrook Reservoir. Near streamlet in meadow. 1706 Comment
  CHSC46245  Calycadenia fremontii Vernon H. Oswald 1989-4-27 3751 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  JEPS95625  Calycadenia fremontii Lowell Ahart 1994-10-8 7551 Butte 1 mi e of Chico Bidwell Park; Chico, North Rim Trail 152 Comment
  RSA300139  Calycadenia hispida L. Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC112679  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CAS-BOT-BC106092  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  CDA13908  Calycadenia oppositifolia G. F. Hrusa, T. D. Wilfred 1997-7-3 13989 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  LA203135  Calycadenia oppositifolia A. A. Heller; 1926-5-22 13940 Butte aong the Richardson Springs Road 3 mi. N of Chico Comment
  UC1748340  Calycadenia oppositifolia L. P. Janeway 1999-10-15 6628 Butte 0.25 mi N-NW of Lime Saddle (between Nelson Bar Road and Lake Oroville); Northern Sierra Nevada Foothills 281 Comment
  CHSC69445  Calycadenia truncata Lowell Ahart 1997-9-6 7887 A Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC88242  Calycadenia truncata Lowell Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CAS-BOT-BC275390  Calycadenia truncata var. truncata Lowell Ahart 1983-6-26 4153 Butte Along the edge of Ponderosa Way, about 1.5 miles SE of the E Fork of Canyon Creek, about 14.5 miles NE of Oroville 575 Comment
  RSA424439  Calycanthus occidentalis Margaret J. Williams, W. Roderick 1984-5-25 84- 20 -1 Butte Honey Run road to Paradise, 6.8 miles from Paradise. Comment
  UCD170555  Calycanthus occidentalis D. O. Burge 2017-8-16 2283 Butte Butte Creek. 220 Comment
  CHSC9702  Calyptridium monospermum Nancy Mosman 1971-7-3 61 Butte In meadow along Hwy 32 ca. 0.3 mi n of Butte Meadow Ranger Station. 1371 Comment
  SD1523  Calyptridium monospermum J. B. Copeland 1930-7-9 Butte Jonesville 1500 Comment
  SEINET10572717  Calyptridium umbellatum Mary Susan Taylor 1980-8-2 Taylor 3212 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET263497  Calyptridium umbellatum R. J. Shaw 1993-5-23 5094 Butte East of Chico at mile marker 31 of Hwy 32 1000 Comment
  CHSC46783  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1983-6-9 4423 Butte Along Hwy 32, 7.2 mile N of Nopel Road in Forest Ranch. 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
  JEPS113304  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. Comment
  CHSC93871  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
  SEINET178480  Calystegia polymorpha E. B. Copeland 1931-7-4 674 Butte Jonesville Comment
  CAS-BOT-BC496958  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  UC1609041  Campanula scouleri Lowell Ahart 1993-7-23 7110 Butte sides of small stream s Fall River (1/8 mi s of campgrounds on the large gravel bar along Fall River, about 6 air mi ne of Feather Falls) 1036 Comment
  CHSC112203  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC35025  Capsella bursa-pastoris R. E. Preston 1982-3-27 206 Butte Along dirt road; Campbell Hills, n of Thermalito Afterbay, Oroville. In saddle. 121 Comment
  CHSC3623  Capsella bursa-pastoris John Francis 1966-2-21 28 Butte Orchard across road from Durham Cemetery. Comment
  CHSC108843  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte Around rocks, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC500  Cardamine californica R. Cress 1935-2-24 Butte Salmon Hole on Chico Creek. 152 Comment
  POM95848  Cardamine californica var. integrifolia C. C. Bruce 1897-02 1944 Butte Little Chico Comment
  SEINET3013179  Cardamine oligosperma Sherri Wemple 1992-6-16 8 Butte Butte County, CA Covered Bridge 10.2 km SE of Chico Comment
  UCSB63620  Cardamine oligosperma Seaman, Cynthia 1980-3-21 Butte Berry Creek Quadrangle, T21N R4E ne 1/4 mi. off Big Bend Rd. on old dirt road, ca. 4 mi. off Hwy. 70, ca. 25 mi. e of Chico 365 Comment
  CHSC83933  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7742 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  JEPS120951  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2013-4-20 18548 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC45073  Carex abrupta Vernon Oswald 1987-7-13 3112 Butte Near Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. At the turn-around at the end of the spur road on the n side of the lake. 1901 Comment
  CAS-BOT-BC18462  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2937 Butte Willow Creek at crossing of Humbug Summit Road. 1874 Comment
  CDA33018  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range.; Flea Valley: meadow at head of Concow Creek. Comment
  CHSC11935  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  SEINET7550706 Image available Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the "Lily Pond". 1700 Comment
  CHSC43867  Carex aurea Vernon Oswald 1987-5-2 2363 Butte East side of Little Chico Creek Canyon ca. 1 mi se of Forest Ranch. 609 Comment
  CHSC45242  Carex aurea S. C. Morey 1983-7-24 625 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS121931  Carex aurea Lowell Ahart 2014-7-16 19677 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS114825  Carex bolanderi Lowell Ahart 2008-6-2 14806 Butte On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  RSA169396  Carex bolanderi L. S. Rose 1963-6-5 63140 Butte North Fork of Feather River, Arch Rock Tunnel. 488 Comment
  CAS-BOT-BC313736  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25715 Butte Forest Rd 20N03 (Moreville Ridge Rd), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, Northern Sierra Nevada highlands (n SNH) 1075 Comment
  RSA0056155  Carex cyrtostachya L. P. Janeway, Lowell A. Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CHSC110144  Carex densa L. P. Janeway 2012-5-2 10813 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek between the creek and Upper Park Road, near Parking Area I. 105 Comment
  CHSC35709  Carex densa J. D. Jokerst 1982-5-19 1581 Butte Artificially watered planters in the southern most parking lot of the Butte College Campus. Comment
  CHSC65470  Carex densa Vernon Oswald 1983-3-13 168 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 170 Comment
  JEPS114978  Carex densa Lowell Ahart 2008-6-13 14819 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  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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Jun 8 2007
  CHSC43951  Carex feta Vernon Oswald 1988-4-18 3277 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Marshy place along the edge of Dry Creek ca. 0.25 mi w of Hwy 99. 51 Comment
  JEPS105635  Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  UCD140310  Carex feta L. P. Janeway 1987-6-13 2187 Butte at the Crain Mill site, 1.6 miles north on Ponderosa Way (Rim Road) from Jarbo Gap. 883 Comment
  CAS-BOT-BC21240  Carex fracta Lowell Ahart 1982-9-29 3837 Butte Banks of Pinkard Creek, about 1.5 miles north of the Lost Creek Res. Dam, about 3.5 miles NW of Strawberry Valley. 1200 Comment
  JEPS87706  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 Comment
  CHSC61651  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  HSC96350  Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Flea Valley, meadow at head of Concow Creek 1116 Comment
  JEPS110319  Carex hoodii Lowell Ahart 2006-7-25 13055 Butte West of 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
  CHSC113416  Carex integra Lowell Ahart 2014-7-10 19635 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC41296  Carex jonesii S. C. Morey 1983-7-21 491 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC59006  Carex laeviculmis Lowell Ahart 1992-6-26 6783 Butte Bog like area, on the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  UC1133395  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se of Butte Meadows (Lassen National Forest); Lassen National Forest 1554 Comment
  CHSC84921  Carex lemmonii L. P. Janeway 2003-7-13 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  JEPS105283  Carex lemmonii Dean W. Taylor 1995-8-6 15396 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Northern Sierra Nevada 1706 Comment
  JEPS109921  Carex lemmonii Dean W. Taylor 2006-8-17 19643 Butte Keyser Creek; boggy fen with patterned ground [ca. 5 miles NNE of Stirling City] 1524 Comment
  CHSC105540  Carex luzulina Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  RSA774128  Carex luzulina var. ablata L. Ahart 2010-9-21 17219 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC49389  Carex microptera L. P. Janeway; R. A. Schlising 1988-7-22 3048 Butte Just below saddle between Coon Hollow and Chips Cr. 1920 Comment
  CHSC52255  Carex microptera L. P. Janeway; R. A. Schlising 1988-7-1 2936 Butte Creekbed of Willow Cr where Humbug Rd crosses. 1874 Comment
  CHSC103223  Carex multicaulis L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9979 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  SEINET10467332  Carex multicaulis Mary Susan Taylor 1981-3-24 Taylor 3435 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC119744  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1848 Butte Jonesville quad. Along Humbug Rd. ca 1.5 mi SW of Humbug Summit. 1859 Comment
  CHSC89037  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8245 Butte High Cascade Range. At Cold Springs; north side of Humbug Summit Road halfway between Willow Creek and Humbug Summit. 1975 Comment
  UC600697  Carex pellita H. F. Copeland 1923-8-1 554 Butte Jonesville Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  CHSC44952  Carex praegracilis L. P. Janeway 1988-6-14 2762 Butte Northwest side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC47132  Carex praegracilis L. P. Janeway 1987-5-20 2058 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. 457 Comment
  CHSC48542  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-16 3009 Butte Along Colby Mountain Rd, 1/4 mi N of Jonesville. 1554 Comment
  SEINET10749868  Carex straminiformis A. Arthur Heller 1928-6-16 Heller 14614 Butte Damp grassy places in the yellow pine forest at Butte Meadows. Comment
  SEINET12649898 Image available Carex subbracteata L. P. Janeway 2011-1 10229 Butte 57 Comment
  CHSC36883  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1658 A Butte Coon Hollow along the edges of forest service road 26N74 ca 1/2 mi W of the West Branch Feather River. N of Philbrook Resv. Comment
  CHSC52879  Carex subfusca L. P. Janeway 1987-7-4 2428 A Butte Near seepy area along road to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  RSA4408  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. 1500 Comment
  CAS-BOT-BC116734  Carex subfusca Clarence Roy Quick 1963-7-16 63 51 a Butte Section Corner Meadow, E of Pilga, Feather River Canyon. 1463 Comment
  CDA33157  Carex subfusca T. C. Fuller 1963-7-12 9187 Butte Butte Creek; road to Jonesville, 2 miles east of Butte Meadow. 0 Comment
  CHSC52239  Carex utriculata L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2988 Butte Crane Valley (upper Big Kimshew Cr); meadow. 1569 Comment
  UC203660  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows 1219 Comment
  CHSC45067  Carex vesicaria Vernon Oswald 1987-6-23 3020 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC44838  Carex whitneyi L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3077 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CAS-BOT-BC499135  Carex xerophila Peter F. Zika; L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mi N of Skyway Rd. 720 Comment
  SEINET13723638  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte northern highlands, Coutolenc Road 0.1 mi north of Skyway Road 720 Comment
  UCD140189  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada. Near summit of SSE slope above Little Butte Creek, N of Magalia. Immediately east of Holmwood Drive. 750 Comment
  CAS-BOT-BC248932  Castilleja Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  JEPS3015  Castilleja affinis subsp. affinis Barbara Gail Paulson 1952-4-11 3 Butte near Cherokee 365 Comment
  CHSC109577  Castilleja applegatei subsp. pinetorum L. P. Janeway 2012-6-23 10887 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC114973  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  JEPS26677  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte along U.S. Alt 40 at Pulga Bridge (canyon of the north fork of the Feather River, w side of river) Comment
  UC1562305  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1990-7-19 4367 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 0.4 mi w of the Plumas County line) 2011 Comment
  CHSC83922  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  JEPS81481  Castilleja attenuata M. S. Taylor 1982-4-28 4355 Butte ca 12 mi sw Gridley (Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd); Pennington Quad. 21 Comment
  CHSC81311  Castilleja exserta J. Trizzino 2001-3-13 10 Butte North Table Mountain. 384 Comment
  CHSC4255  Castilleja lacera J. E. Bowlin 1967-4-14 32 Butte 3.4 mi. E of corner of Keefer Rd. and Cohasset, Chico. Comment
  CHSC52373  Castilleja lacera L. P. Janeway 1989-5-17 3259 Butte Large mdw at upper jct Black Bart Rd and Forbestown Rd. 746 Comment
  RSA0108969  Castilleja lacera Lowell A. Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1.5 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  SEINET12291098  Castilleja linariifolia Unknown 5 s.n. Butte no further locality Comment
  CAS-BOT-BC241129  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UC426961  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville 1500 Comment
  JEPS31898  Castilleja tenuis A. A. Heller 1914-6-22 11509 Butte Chico Meadow 1219 Comment
  CHSC77024  Catalpa speciosa L. P. Janeway 1999-8-5 6515 Butte Within the City of Chico, along Big Chico Creek between Esplanade and the Camillia Way Bridge. 59 Comment
  JEPS117625  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico 67 Comment
  RSA20877  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  RSA85961  Ceanothus cuneatus C. C. Bruce 1897-1 1816 Butte Little Chico Comment
  UC177593  Ceanothus cuneatus var. cuneatus H. M. Hall 1914-8-2 9831 Butte foothills near Bidwell Bar (near Mt. Ida Ranch), Sierra Nevada Mts. Comment
  CAS-BOT-BC50777  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  CHSC64129  Ceanothus integerrimus Michael Deal 1992-4-19 5 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  JEPS108797  Ceanothus integerrimus Lowell Ahart 2006-6-24 12860 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1128 Comment
  JEPS115617  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  LA43617  Ceanothus integerrimus E. B. Copeland; 1929-7-14 sn Butte Jonesville 502 Comment
  SD2946  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville, in edge of fir and pine woods. 1650 Comment
  CHSC3514  Ceanothus integerrimus var. macrothyrsus John Francis 1966-4-16 107 Butte 1.5 miles E. of covered bridge (Honey Run); growing in grass-covered area beside road. Comment
  SEINET10493641  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 Ahart 4844 Butte On red rocky soil near Kunkle Res., about 2 miles south of Paradise. Comment
  RSA300948  Ceanothus prostratus D. C. Michener 1982-7-28 4140 Butte Along 32, 3.5 miles NE of Forest Ranch (at Nopel road), Yellow pine forest Comment
  RSA753078  Ceanothus prostratus Dylan O. Burge 2007-5-11 DOB- 921 b Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) N of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 degrees (True) NNW of Magalia. 850 Comment
  CAS-BOT-BC52420  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CHSC111408  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18264 A Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  CDA7258  Centaurea maculosa W. Gilbert, R. Dodd 1970-7-22 Butte North side of Highway 32 west of California Forestry Station, Forest Ranch, northeast of Chico. 0 Comment
  CHSC32681  Centaurea melitensis M. S. Taylor 1981-3-24 3447 Butte S side of Hwy 70, in turn out just e of Poe Dam, ca. 1 mi e of Pulga, in turn out. 487 Comment
  UCD80049  Centaurea melitensis CNPS SN Foothill Team 2005-5-4 SNFN 0201 f 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
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  UCD130049  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte Stilson Canyon east of Chico. Comment
  CHSC115798  Centaurea stoebe subsp. micranthos Lowell Ahart 2015-9-8 20533 Butte On the sides of a dirt road, about one mile northeast of the bridge across Fall River, about 8 miles (air) northeast of the school in Feather Falls. 1191 Comment
  CHSC109599  Centaurium tenuiflorum Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18123 Butte On the south side of the paved park road (Peterson Drive) about 100 yards west of the gate, lower Bidwell Park, Chico. 76 Comment
  SEINET10454834  Centaurium venustum Mary Susan Taylor 1980-5-15 Taylor 2632 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  JEPS106000  Centunculus minimus Lowell Ahart 2004-4-4 10716 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC66677  Cephalanthus occidentalis var. californicus Vernon Oswald 1996-7-17 8061 Butte Sacramento River National Wildlife Refuge; Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  SEINET10902539  Cephalanthus occidentalis var. californicus Mary Susan Taylor Taylor 834 Butte Bidwell Park, Chico. Comment
  CHSC113370  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 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
  CHSC113378  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  JEPS115843  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC388268  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville Comment
  CAS-BOT-BC251514  Cercis occidentalis Camille F. Nowell 2012-7-16 47 Butte Hwy 32 approx 13 mi NE of Chico. 433 Comment
  CHSC26457  Cercis occidentalis P. Moyer 1972-3-11 120 Butte CSUC Campus. E side of Cafe bridge, n bank of Chico Ck. 60 Comment
  CHSC33360  Cercis occidentalis Steve Alvarez 1980-3-24 19 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  OBI69157  Cercis occidentalis Kari Fisher, Bill Fisher 2000-10-8 27 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  SEINET11892046  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Reservoir, about 2 mi S of Paradise 488 Comment
  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
  CHSC54297  Chaenactis glabriuscula var. heterocarpha Vernon H. Oswald 1991-6-5 4645 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  SBBG28959  Chamaesaracha nana E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  UC600653  Chamaesaracha nana H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CDA34170  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  CHSC83079  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97130  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 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
  JEPS108966  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  JEPS95154  Chamaesyce maculata Lowell Ahart 1997-10-24 7941 Butte about 20 yards n of South Fork of the Feather River (on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderosa Dam); e side of Sucker Creek 274 Comment
  RSA754842  Chamaesyce maculata L. Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1.5 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC31696  Chamaesyce nutans L. Ahart 1974-8-14 600 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CDA35250  Chamaesyce ocellata T. C. Fuller 1962-8-6 9332 Butte North of Hwy 99E to Chico, 1.2 miles south of Tehama/Butte County line. 0 Comment
  CDA35256  Chamaesyce ocellata T. C. Fuller 1962-5-17 8711 Butte Highway 99E to Vina, 12.3 miles northwest of Chico. 0 Comment
  JEPS115651  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 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
  SEINET10529951  Cheilanthes californica Mary Susan Taylor 1981-5-15 Taylor 3732 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  CAS-BOT-BC69442  Cheilanthes gracillima M. S. Taylor; K. Tharp 1983-3-11 5223 Butte Big Bald Rock, ca. 3 mi. s. of Brush Creek, ne. of Oroville. 975 Comment
  CHSC43574  Cheilanthes gracillima Vernon Oswald 1984-7-2 1345 Butte 2.5 mi se of the junction of 26N27 and Humboldt Rd. ne of Jonesville. 1767 Comment
  CHSC44088  Cheilanthes gracillima L. P. Janeway 1987-7-5 2465 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  SEINET10529917  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2663 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
  SEINET10529939  Cheilanthes siliquosa Mary Susan Taylor 1979-10-13 Taylor 2263 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  JEPS95989  Chenopodium album Lowell Ahart 1999-10-28 8312 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC110403  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18457 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  JEPS119954  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18457 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  SD3528  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville Comment
  CDA38838  Chimaphila umbellata Vernon H. Oswald & Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  SEINET3451380  Chloris virgata Unknown 2006-8-2 6 .337 Butte East of Butte City, East of Butte City, along Ord Ferry Road, east of old Sacramento River district 30 Comment
  CHSC103702  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 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
  SEINET10872218  Chlorogalum angustifolium Mary Susan Taylor 1980-5-15 Taylor 2621 Butte N of Chico along Cohasset Road. Comment
  SEINET10905133  Chlorogalum pomeridianum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4082 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC84158  Chondrilla juncea Lowell Ahart 2003-6-30 10331 Butte Near the water pipe where it comes out of the mountain, on the north side of the Ponderosa Reservoir, about 2 miles (air) north of Forbestown. 481 Comment
  CHSC103750  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-16 16705 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 381 Comment
  CHSC45363  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  CHSC46278  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1989-4-14 3734 Butte Wurlitzer Unit, Vina Plains Preserve. Near the northeast gate on Haille Rd. 57 Comment
  JEPS104309  Chorizanthe stellulata Lowell Ahart 2003-5-27 10218 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  SEINET516311  Chorizanthe stellulata Vernon H. Oswald 1998-5-6 8986 Butte Upper Bidwell Park (new addition), Pine trail near the trailhead on Hwy 32 between Chico and Forest Ranch opposite Santos Rd. 453 Comment
  CHSC48446  Cicendia quadrangularis Vernon Oswald 1984-3-25 1105 Butte Upper Bidwell Park, Chico, ca. 100 ft s of Salmon Hole Parking Lot. Along Yahi Trail. 152 Comment
  SEINET5507008 Image available Cirsium andersonii E. B. Copeland 1931-7-27 n.s. Butte Jonesville 1650 Comment
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico Comment
  CAS-BOT-BC285524  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30504 Butte Near Pentz Comment
  CHSC111407  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte On the north side of the paved park road, about 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CDA42837  Cirsium vulgare H. Bloo, B. Voorhees 2002-9-5 PDR 1174351 Butte Sacramento Valley; Rough area adjacent to fairway at Bidwell Golf Course. 0 Comment
  CAS-BOT-BC228749  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC228758  Cistanthe umbellata E. B. Copeland 1930-7-12 413 A Butte Above Jonesville 2000 Comment
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  SEINET12193694  Clarkia arcuata T. A. Barrett 1976-1 10 Butte 13.7 km E of Chico, N side of the Skyway 500 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
  JEPS105624  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake 287 Comment
  CAS-BOT-BC164133  Clarkia concinna Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC94043  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  RSA718034  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  CAS-BOT-BC163267  Clarkia mildrediae subsp. lutescens M. S. Taylor 1978-7-21 1804 Butte On n side of Oroville-[Quincey] Quincy Hwy, ca. 9 mi n of Lake Madrone 914 Comment
  CHSC64114  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek. South-facing road cutbank. 786 Comment
  CHSC64117  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. South-facing road cutbank at curve of the road. 853 Comment
  CHSC86578  Clarkia mosquinii L. P. Janeway; John Hunt 2003-7-1 7861 Butte Northern High Sierra Nevada. Along southeast edge of Middle Fork Feather River arm of Lake Oroville, 960 m west-southwest of mouth of Frey Creek. Just above high water line. 276 Comment
  CHSC64326  Clarkia purpurea subsp. quadrivulnera H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. 880 Comment
  RSA755642  Clarkia purpurea subsp. quadrivulnera L. Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road that is Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CAS-BOT-BC164776  Clarkia rhomboidea Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  CHSC26849  Clarkia rhomboidea M. S. Taylor; M. Hayes 1978-6-24 1642 Butte On n side of Old Humboldt Rd at jct of Butte Creek and Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC60997  Clarkia rhomboidea Lowell Ahart 1993-6-20 6980 Butte Lumpkin Ridge, about 1 1/2 miles east of Camp 18, about 6 1/2 (air) miles north-east of Feather Falls. 1219 Comment
  UCD104980  Clarkia rhomboidea L. Ahart 1983-6-26 4118 Butte About 15 miles NE of Oroville, about 2 miles SE of intersection of the Oroville/Quincy Highway and Ponderosa Way. 500 Comment
  CAS-BOT-BC439109  Claytonia exigua subsp. exigua A. A. Heller 1919-3-29 13094 Butte Feather River near Yankee Hill Comment
  NY342211  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville; above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel 1550 Comment
  SEINET10674969 Image available Claytonia palustris John R. Swanson 1959-7-4 Swanson 490 Butte Butte Co., Jonesvile, marshy, sloping, stream-fed meadow above south bank of Jones Creek. 0.4 km. east of the Jonesville Hotel. 1550 Comment
  JEPS107415  Claytonia parviflora subsp. parviflora Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. South of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 481 Comment
  UC204570  Claytonia parviflora subsp. parviflora A. A. Heller 1914-4-6 11240 Butte 12 mi from Chico (Chico-Oroville road, on the banks of Dry Creek); Dry Creek Comment
  POM102022  Claytonia perfoliata C. C. Bruce 1897-05 2016 Butte Little Chico. Comment
  SEINET10572739  Claytonia rubra Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4743 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC4714  Claytonia rubra subsp. rubra R. Carter 1966-4-28 383 Butte Found in Feather R. Canyon ca. 1.5 mi. SW of Cresta Power House on E side Hwy. 70; growing in loose granite on bank above road. 670 Comment
  CHSC110129  Clematis lasiantha L. P. Janeway 2012-3-21 10799 Butte Northern Sierra Nevada Foothills. Near the top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). 88 Comment
  POM98214  Clematis lasiantha C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  CHSC84380  Clematis ligusticifolia L. Ahart; P. Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  CHSC42810  Clintonia uniflora L. P. Janeway 1987-6-13 2221 Butte Along Concow Rd just SW of rd to Five Corners and Stirling City. 1188 Comment
  UCD123666  Collinsia sparsiflora Michael A. Vincent; Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. 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
  CHSC79571  Collinsia tinctoria G. F. Hrusa; E. Sandoval 1993-5-29 11134 Butte Feather River Canyon. Base of south-facing slope at corner of Hwy 70 and Pulga Rd. at bridge over Feather River. [Original lat./long. on label is '39 48 N; 121 37 W']. 800 Comment
  CHSC93857  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  UC478480  Collomia grandiflora E. B. Copeland 1930-7-16 Butte Jonesville 1600 Comment
  CHSC26850  Collomia linearis M. S. Taylor; M. Hayes 1978-6-24 1644 Butte On Ernies Island in Butte Creek, at jct with Old Humboldt Rd, ca. 1/2 mi w (or e) of Butte Meadows. 1371 Comment
  JEPS115538  Collomia tinctoria Lowell Ahart 2009-5-15 15716 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  RSA31755  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia. Comment
  UCD149838  Consolida ajacis Harry A. George 1967-4-24 s.n. Butte Table Mt. Comment
  CHSC2475  Corallorhiza striata W. Fitzwater 1958-3-12 Butte Near Stirling City. 1463 Comment
  CHSC51014  Cordylanthus pilosus var. tenuis Lowell Ahart 1990-8-15 6589 Butte On the east side of the Enterprise Boat Launch Area Parking area, about 1/2 miles north-west of the Enterprise Bridge across Lake Oroville. 335 Comment
  UCD131025  Coreopsis tinctoria E. M. Johnston 1915-1 148 -J Butte Biggs. Comment
  UC1122780  Cornus nuttallii P. L. Johannsen 1936-7-17 932 Butte 1/2 mi. s. Butte Meadows (Plot 2); Lassen Nat'l Forest, Paynes Creek Quad. Comment
  UC1122795  Cornus nuttallii J. E. Sowder 1933-7-6 107 Butte 2 mi. n.e. Cohassett; Chico Quad. Comment
  UCD117250  Cornus nuttallii P. Thompson 1996-4-26 38 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  CHSC48307  Cornus sericea subsp. sericea Vernon Oswald 1987-6-23 3007 Butte Just w of the Skyway, 1.4 mi (odometer) s of Inskip. 1426 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
  UC193079  Cornus sessilis Dr. Parry April, 1883 Butte Chico Creek Comment
  UC775193  Cornus sessilis Herbert L. Mason 1940-5-22 12311 Butte Humboldt Rd. ca. 10 mi. above Chico Comment
  UCD117262  Cornus sessilis Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  UC733224  Corydalis caseana subsp. caseana Marion Ownbey and Gerald B. Ownbey 1946-6-24 2938 Butte 1.3 mi. below Jonesville (at forks of Butte Creek); Butte Creek Comment
  JEPS120054  Cotoneaster lacteus Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17854 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  CHSC90637  Cotula australis Lowell Ahart 2005-4-2 11680 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
  RSA769676  Cotula australis L. Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  JEPS128723  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET3450921  Cotula coronopifolia Unknown 2003-6-23 10310 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CAS-BOT-BC427628  Crassula aquatica Lowell Ahart 1982-5-14 3436 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 50 Comment
  JEPS102771  Crassula aquatica Lowell Ahart 2001-4-15 8728 Butte 4 air mi SW of Gridley (Gray Lodge Waterfowl Management Area; deep ditch SE of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road) 22 Comment
  JEPS120654  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC38404  Crassula connata Vernon Oswald 1983-3-9 139 Butte Upper Bidwell Park, Chico, on north slope 1200 ft e of the power lines and 1600 ft n of Upper Park Rd. 182 Comment
  CAS-BOT-BC376468  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte W side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap 853 Comment
  CHSC46403  Crucianella angustifolia Lowell Ahart 1989-5-23 6252 Butte About 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC47474  Crucianella angustifolia Lowell Ahart 1973-5-24 220 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS115618  Crucianella angustifolia Lowell Ahart 2009-5-15 15706 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC47612  Crypsis schoenoides Lowell Ahart 1984-8-19 4788 Butte In an area where gravel is removed, north of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  JEPS124349  Crypsis schoenoides Lowell Ahart 2015-10-26 20601 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  POM266636  Crypsis vaginiflora J. C. Roos 1939-7-3 1521 Butte a few miles southeast of Chico Comment
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville 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
  POM252793  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CHSC37212  Cryptantha milobakeri L. Ahart 1982-7-28 3712 Butte On the bottom of the water ditch, ca. 1/8 mi n of Pacific Mine, ca. 5 mi e of La Porte. 1700 Comment
  CDA40502  Cryptantha torreyana T. C. Fuller 1962-7-12 9169 a Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC43577  Cryptogramma acrostichoides Vernon Oswald; Lowell Ahart 1987-8-5 3179 Butte Near Humboldt Peak. 2151 Comment
  CAS-BOT-BC85559  Cupressus macnabiana Clarence R. Quick 1959-8-17 59 -44 Butte Magalia Comment
  CAS-BOT-BC85569  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines off logging [loggine] rd., 883 Comment
  JEPS98274  Cuscuta campestris Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS47093  Cuscuta indecora W. K. Studley 1910-10-31 4 d Butte Chico Comment
  POM76966  Cycladenia humilis Mrs. R. M. Austin, C. C. Bruce 1898-05 s.n. Butte Doc Mill Comment
  CHSC44896  Cycladenia humilis var. humilis Lowell Ahart 1988-7-31 6142 Butte On the west side of the dirt road that crosses the West Branch of the Feather River, 2 miles by road northeast of Stirling City. 975 Comment
  CHSC45615  Cycladenia humilis var. humilis L. P. Janeway 1988-6-25 2858 Butte Along The Skyway 2.4 mi N of Inskip; ridgetop near Bottle Hill. 1554 Comment
  CHSC47968  Cycladenia humilis var. humilis Vernon Oswald 1987-5-21 2919 Butte Skyway 2.3 mi n of Inskip. 1584 Comment
  CHSC2139  Cynodon dactylon B. Hetherington 1949-5-1 Butte Chico. 57 Comment
  CHSC3573  Cynoglossum grande Judy Lee Potter 1966-2-26 Butte Nelson's Bar. West of Paradise. Comment
  SEINET10497513  Cynoglossum grande Mary Susan Taylor 1976-3-6 Taylor 1011 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC11331  Cynosurus echinatus Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC75976  Cyperus acuminatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA13838  Cyperus bipartitus G. F. Hrusa, T. D. Wilfred 1996-9-5 13566 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  CHSC97272  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC114742  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, NW of Pennington Comment
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  CHSC102815  Cyperus eragrostis Lowell Ahart 2009-6-19 15950 Butte About 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC112331  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 Butte South side of North Honcut Creek, east of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC68379  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-9-14 1860 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  CHSC68384  Cyperus eragrostis L. P. Janeway 1988-6-29 2905 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
  POM111773  Cyperus eragrostis C. C. Bruce 1897-05 1887 Butte Little Chico Comment
  CHSC45159  Cyperus erythrorhizos Lowell Ahart 1974-11-9 675 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
  CHSC68387  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1871 Butte Northwest side of Little Chico Creek near River Road, about 2 mi south of Chico River Road. 36 Comment
  CHSC83084  Cyperus erythrorhizos Lowell Ahart 2002-10-17 9997 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC61068  Cyperus esculentus Vernon H. Oswald 1993-8-9 5780 Butte Arroyo Chico. Hwy. 99 offramp at E. 1st Ave. (NW corner), Chico. 64 Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 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
  CHSC68400  Cyperus niger L. P. Janeway 1988-6-14 2760 Butte Gutter of the road to Doe Mill Ridge; low in the northwest side of the canyon of Little Chico Creek about 1 3/4 mi south of Ten Mile House. 228 Comment
  CAS-BOT-BC114073  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte South of Oregon Gulch Road, ca. 1/2 mi N of the Cementery, 335 Comment
  CHSC30386  Cyperus squarrosus J. D. Jokerst 1980-7-18 993 Butte Top of North Table Mt., ca. 100 m NW of the jct. of Cherokee Rd. and the E edge of Mt. Comment
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  JEPS94767  Cyperus squarrosus Lowell Ahart 1998-7-18 8037 Butte about 7 air mi n of Oroville (about 1/2 mi n of the ione oak tree, about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 408 Comment
  UC1100557  Cyperus squarrosus Malcolm A. Nobs and S. Galen Smith 1949-7-29 1089 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  UC837509  Cyperus squarrosus A. A. Heller 1917-7-28 12840 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC114208  Cyperus strigosus Ira L. Wiggins 1928-9-9 3337 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CDA38893  Cyperus strigosus L. Ahart 2000-8-23 8661 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  SEINET10467193  Cyperus strigosus Mary Susan Taylor 1978-9-8 Taylor 1881 A Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC37118  Cypripedium fasciculatum L. Ahart 1982-9-13 3809 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  SEINET10470084  Cypripedium fasciculatum Mary Susan Taylor 1981-5-27 Taylor 3803 Butte T23N R3E ne sec 13, Paradise SE quad. W side of Paradise Lake, ca. half way between Butte Creek entrance to the north and dam to the sough, ca. 50 ft up from lake edge, ca. 3 air mi N of Magalia. Dense Yellow Pine F; 2600 ft. 792 Comment
  CHSC42505  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte About 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  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
  UC478560  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte woods by Butte Creek Jonesville 1550 Comment
  POM121176  Cystopteris fragilis C. C. Bruce 1897-05 1666 Butte Iron Canyon. Comment
  RSA692783  Cystopteris fragilis M. M. Boney 1897-1 4215 Butte Unspecified Comment
  SEINET10535619  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2365 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  SEINET11716735  Cystopteris fragilis M. S. Taylor, Jokerst, J. D.; Ahart, L. 1980-1 3203 Butte Humboldt Peak 2155 Comment
  UC1100156  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte 15 mi. w. Oroville; Sacramento Valley Comment
  CAS-BOT-BC189895  Danthonia californica Lowell Ahart 1980-5-17 2288 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC43128  Danthonia californica var. americana Robert Banchero 1981-7-19 610 Butte Ca 0.6 mi e of Balt Mt look-out tower, on Keyser Creek. 1682 Comment
  HSC100744  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte N side of a poor dirt road, 1 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1900 Comment
  CAS-BOT-BC194412  Danthonia intermedia V. Oswald; L. Ahart 1988-7-26 3615 Butte Snow Mt. region located ca. 6 air mi SE of Jonesville. 1996 Comment
  CHSC6024  Daphne odora M. MacArthur 1968-6-19 263 Butte SE side of Auditorium bld., Chico State College. 60 Comment
  CHSC44830  Darmera peltata Steven Triano 1987-4-19 45 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico, growing among rocks in the West Branch Butte Creek. 853 Comment
  CAS-BOT-BC10106  Delphinium hesperium subsp. pallescens Mrs. H. C. Cantelow 1940-5-10 4255 Butte 8.5 mi. SW of Oroville along Hwy. 24 Comment
  CAS-BOT-BC9920  Delphinium nudicaule Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC1449  Delphinium nudicaule D. Sloan; L. Oliver 1935-2-23 Butte Salmon Hole in Chico Creek. 152 Comment
Read comments
May 10 2007
  SEINET10536044  Delphinium nudicaule Mary Susan Taylor 1973-1 Taylor 20 Butte Along Cohasset Road leading from Chico. Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  CAS-BOT-BC82880  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  CHSC10711  Dendromecon rigida Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  UC726213  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte along the Feather River Hwy about 1 mi w Jarboe Pass (about 20 mi from Oroville) 609 Comment
  SEINET10448605  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-31 Taylor 3452 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET10448606  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1975-5-9 Taylor 570 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  CHSC11981  Deschampsia cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville. Border of 'Lily Pond'. 1750 Comment
  UC203666  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte along rd. between Dry Creek and Gridley (and near Nelson) Comment
  UCD80540  Deschampsia danthonioides CNPS SN Foothill Team 2005-3-31 SNFN 0073 c Butte CDFG North Table Mountain Wildlife Area, in the North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  SEINET11683958  Deschampsia danthonioides R. Banchero, Banchero, M. 1979-1 18 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  SEINET11687271  Deschampsia elongata L. Ahart, Ahart, P. 1984-1 4700 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC39046  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte About 15 mi ne of Oroville, just off of Bloomer Hill Road about 0.5 mi w of the Oroville-Quincy Highway. Along a poor road, near a branch of Canyon Creek. 400 Comment
  CHSC101748  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC76943  Dicentra formosa Ida Ryan 1893-5-1 Butte Big Chico Creek. Comment
  UC120094  Dicentra formosa Mrs. R. M. Austin 1896-1 230 Butte Colby Comment
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  CHSC116960  Dichelostemma capitatum Matthew Forster 2013-3-5 Butte Found along 14 Mile House Rd. 472 Comment
  CAS-BOT-BC500066  Dichelostemma capitatum Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC90588  Dichelostemma capitatum subsp. capitatum L. Orme 1980-3-20 7 Butte Clark Road, 3.2 km. S. of Paradise. Found on hillside. 370 Comment
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  CAS-BOT-BC501086  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville near Table Mountain Comment
  RSA339162  Dichelostemma multiflorum Margaret J. Williams, Wayne Roderick 1984-5-25 84- 22 -4 Butte Magalia, near Skyline road to Paradise 168 Comment
  CHSC101770  Dichelostemma volubile Lowell Ahart 2009-4-26 15625 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  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
  SEINET10905136  Dichelostemma volubile Mary Susan Taylor 1986-5-6 Taylor 5614 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  SEINET12051034  Dichelostemma volubile S. A. Carter 1988-1 s.n. Butte S side of Little Butte Creek, ca 8.8 mi ESE of Chico, ca 100 ft W of Honey Run Rd 160 Comment
  CHSC38808  Digitaria ischaemum Vernon Oswald 1983-9-17 1040 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC108136  Digitaria sanguinalis Lowell Ahart 2011-10-29 17728 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  JEPS95157  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  SEINET13711412  Digitaria sanguinalis Lowell William Ahart, Lowell William Ahart 1999-1 8154 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  SEINET8225565  Diplacus grandiflorus Helen M. Edwards 1917-6-6 Butte Ile Sabla. Comment
  CAS-BOT-BC153216  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte About the Clear Creek-Paradise grade Comment
  SEINET13700565  Diplacus kelloggii M. J. Williams 1967-4-22 s.n. Butte Road from Oroville to Feather Falls. 244 Comment
  CHSC43154  Diplacus layneae R. A. Schlising; D. Ikeda 1980-5-31 3608 Butte Cohasset Ridge, S of village of Cohasset, along firetrail above Cohasset Hwy. Comment
  CHSC78271  Diplacus layneae Lowell Ahart 2000-6-27 8510 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC44815  Diplacus torreyi R. Banchero 1980-6-12 209 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  SD7102  Diplacus torreyi Daniel Cleveland July 1882 Butte Sutton House Comment
  CHSC1802  Diplacus tricolor R. Carter 1965-3-30 175 Butte Found on Whurlitzer Ranch NW of Chico. 50 yards inside of gate. 60 Comment
  CAS-BOT-BC154166  Diplacus tricolor Lowell Ahart 1982-5-12 3433 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut 50 Comment
  JEPS108156  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point 1249 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  POM76693  Dodecatheon clevelandii subsp. patulum C. C. Bruce 1897-02 2098 Butte Little Chico. Comment
  UC640447  Dodecatheon clevelandii subsp. patulum Elmer I. Applegate 1927-3-4 5000 Butte about ten mi n Chico; n of Chico Comment
  CHSC31869  Dopatrium junceum L. Ahart 1974-7-20 555 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET7073007  Downingia bacigalupii A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  SEINET8039316  Downingia bella B. Ertter, J. L. Strachan, L. Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  POM59018  Downingia bicornuta A. A. Heller, H. E. Brown 1902-5-3 5448 Butte Near Nelson Comment
  RSA389175  Downingia bicornuta C. B. Wolf 1937-5-14 8673 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. Comment
  CHSC112932  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2012-5-23 1922 Butte Sacramento Valley. Ca 1.6 air mi E of Hwy 99 and1 mi N of Hwy 162E off NE edge of Thermallito Afterbay, 0.5 mi WNW old 'Oroville Jen' on maps, now jcn of Tres Vias and Wilbur Roads. Elevation 139-144 ft. 43 Comment
  UC196262  Downingia bicornuta var. bicornuta A. A. Heller 1914-4-24 11316 Butte 5 mi from Chico (Chico-Oroville road) Comment
  CHSC181  Downingia insignis V. Holt 1935-5-15 Butte Oroville road. 76 Comment
  CDA42327  Downingia insignis Vernon H. Oswald & Lowell Ahart 1998-6-11 9217 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  CHSC27490  Downingia pulchella M. S. Jaeckel 1974-4-23 34 Butte Found locally in muddy places and vernal pools, Chico. Comment
  CAS-BOT-BC41351  Draba verna Lowell Ahart 1990-3-19 6424 Butte About 3.5 miles southwest of Oroville. Along the south side of Pacific Heights Road. 36 Comment
  CHSC35016  Draba verna var. verna R. E. Preston 1982-3-20 193 Butte Roadside, Hwy 70 at Bear Ranch Creek; ca. 22 mi nne of Oroville. 457 Comment
  SFV11589  Draperia systyla M. L. Vincent 1968-6-10 838 Butte Sierra Nevada 1.2 miles south from Cresta Power House sign, North Fork Feather River. 460 Comment
  UCD124001  Drosera X obovata Barry Rice 2011-8-21 BR 110812 Butte Mallory Meadow. 1350 Comment
  CHSC46489  Drosera rotundifolia Lowell Ahart 1984-7-19 4756 Butte About 1/2 mile east of Bald Mountain, about 5 air ... Field redacted by CHSC, contact the data manager for more information 1615 Comment
  CHSC96314  Drosera rotundifolia L. P. Janeway 2006-8-12 8850 Butte Northern High Sierra Nevada. Large soggy meadow o ... Field redacted by CHSC, contact the data manager for more information 1681 Comment
  CAS-BOT-BC70852  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte along the edge of Poe Power House Road, about 1 mile northwest, about 1 mile southeast of Jarbo Gap 487 Comment
  CHSC29001  Dryopteris arguta M. S. Taylor 1980-3-8 2376 Butte Pulga community, ca. 1 mi ne of Hwy 70, ca. 28 mi ne of Oroville. 487 Comment
  CHSC70826  Dryopteris arguta Vernon Oswald 1998-4-12 8904 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
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  JEPS116137  Dryopteris arguta Lowell Ahart 2009-8-20 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest 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
  CHSC65166  Dysphania ambrosioides Lowell Ahart 1995-8-19 7616 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 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
  CHSC76050  Dysphania botrys G. F. Hrusa; T. D. Wilfred 1996-7-8 13082 Butte In full sun at old gun range. Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 800 Comment
  JEPS124156  Dysphania botrys Lowell Ahart 2015-11-7 20617 -A Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC113116  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC49539  Echinochloa colona Vernon Oswald 1987-8-13 3212 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. On the edge of a bean field. 48 Comment
  CHSC116150  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  SEINET10564167  Echinochloa crus-galli H. E. Brown 1896-10-2 Brown 114 Butte Collected Near Oroville, 52 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
  JEPS76252  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  HSC95564  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte Along the E side of the Sacramento River, NW of Parrot Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 air mi. SW of Chico 32 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
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC78831  Elatine ambigua Lowell Ahart 2000-10-19 8710 Butte Fallow rice field, on the north side of Lower Honcut Road, west of Wyandotte Creek, about 150 yards west of the railroad, 1 1/2 miles west of Honcut, about 13 miles south of Oroville. 26 Comment
  JEPS104282  Elatine ambigua Lowell Ahart 2003-6-23 10299 Butte On the bottom of a wash, Peter Ahart Ranch, ca 100 yd e of Palermo Honcut Highway, ca 2 1/4 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS122151  Elatine californica Lowell Ahart 2014-4-30 19420 Butte About 50 yards south of the Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southeast of Honcut. Comment
  JEPS124216  Elatine californica Lowell Ahart 2015-3-26 19965 Butte About 1/8 mile south Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. Comment
  SEINET10447966  Elatine heterandra Lowell Ahart 1984-5-8 Ahart 44596 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC36955  Elatine rubella M. S. Taylor; Lowell Ahart, J. Jokerst 1982-4-28 4356 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w of its jct with Pennington Rd, ca 12 mi sw of Gridley. 21 Comment
  HSC72958  Elatine rubella M. S. Taylor 1978-7-22 1850 Butte Richvale, on SE corner of Richvale E Rd. and Erickson Rd. 30 Comment
  SEINET10447970  Elatine rubella Mary Susan Taylor 1982-4-28 Taylor 4356 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
  CDA38956  Eleocharis acicularis var. acicularis L. Ahart 2000-5-11 8338 Butte Along a small wash, about 100 yards south of a dirt road, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC113640  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43788  Eleocharis bella Vernon Oswald 1987-5-25 2924 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. 68 Comment
  CHSC46463  Eleocharis bella V. Oswald; L. Ahart 1989-6-27 3829 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Meadow along Butte Creek. 1767 Comment
  CAS-BOT-BC113458  Eleocharis bella A. A. Heller 1963-7-16 63 52 b Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  CHSC78298  Eleocharis bolanderi Lowell Ahart 2000-6-29 8541 Butte 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
  CHSC78192  Eleocharis engelmannii Lowell Ahart 2000-6-4 8445 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC96902  Eleocharis engelmannii Lowell Ahart 2006-7-27 14395 Butte On the south strand of the 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
  JEPS113682  Eleocharis engelmannii Lowell Ahart 2007-7-27 14395 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  SEINET197463  Eleocharis engelmannii J. M. Tucker 1953-8-28 2677 Butte Biggs Rice Experiment Station. Comment
  UCD49747  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville, Butte County. In and beside the 'Lily Pond,' a permanent pool, warm in summer. 1750 Comment
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. Comment
  RSA695401  Eleocharis obtusa var. engelmannii L. 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
  JEPS98504  Eleocharis obtusa var. obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC113212  Eleocharis parishii Holm 1903-5-30 3280 Butte Chico Comment
  CHSC78566  Eleocharis parishii Lowell Ahart 2000-9-4 8682 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  CHSC31670  Eleocharis quinqueflora L. Ahart 1973-5-24 229 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CDA33180  Eleocharis quinqueflora L. 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 Comment
  CDA38987  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte On the north margin of a large wash, 200 yards east of the road crossing, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET13710950  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8555 Butte 5 Air Mi. NE of Feather Falls (T21N, R7E, sec 27, NW 1/4) 3400 Ft. 1036 Comment
  SEINET3441887  Eleocharis quinqueflora Unknown 2000-7-7 8555 Butte Dallas, Dallas, about 8 miles east, Sunnydale, about 4.5 miles south of highway 635, Tain east Boulevard 1030 Comment
  SEINET9084534  Eleocharis radicans L. Ahart 2000-9-4 8686 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  CHSC109751  Eleusine indica Lowell Ahart 2012-10-28 18532 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS102306  Elodea canadensis Lowell Ahart 2001-7-6 8883 Butte 12 mi SE of Chico (small pond W of a lg. pond, lg. overflow area on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 2 mi SE of Ord bend[sic]) 32 Comment
  UCD61510  Elymus elymoides L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC46230  Elymus glaucus Pauleen Broyles 1987-6-26 1065 Butte Ca 1 air mile n.e. of Inskip. On a gravel bar in West Branch of North Fork of Feather River, ca 90 m. above road-crossing bridge. 1400 Comment
  POM183178  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville. 1524 Comment
  CAS-BOT-BC203426  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  JEPS94308  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  RSA786286  Elymus multisetus P. Reisentz 1979-5-13 s.n. Butte On State Highway 70, 9 miles south of Butte- Plumas County Line Comment
  CHSC44172  Elytrigia elongata V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca. 3 mi (air) se of Jonesville on Humbug Rd, ca. 0.3 mi w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. Roadside. 1755 Comment
  CHSC38779  Elytrigia pontica subsp. pontica Vernon Oswald 1983-6-20 723 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of Parking Area N at Salmon Hole. 182 Comment
  UCR219264  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15589 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC117433  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC42112  Epilobium campestre Lowell Ahart 1986-11-9 5454 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
  CHSC38570  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-14 679 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. On seeps both n and s of the road. 134 Comment
  JEPS108972  Epilobium ciliatum subsp. glandulosum Lowell 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 431 Comment
  POM183924  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-19 s.n. Butte Jonesville; beside Butte Creek, near the source 1800 Comment
  CHSC31883  Epilobium cleistogamum L. Ahart 1978-6-8 1773 Butte Bottom of vernal pools and swales. Peter Ahart Ranch, Honcut. 50 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
  CHSC46642  Epilobium densiflorum Lowell Ahart 1989-7-4 6361 Butte Mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UC600548  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-7 Butte Butte Creek Jonesville 1500 Comment
  UC873375  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico meadows 1219 Comment
  POM184018  Epilobium lactiflorum H. F. Copeland 1932-08 s.n. Butte Butte County: In Springs near Crest of ridge SE of the head of Butte Creek. 2000 Comment
  CHSC24765  Epilobium minutum P. J. Welch 1976-4-12 19 Butte Ca. 1 to 2 yds n of Crown Pt. Rd. and ca. 0.3 mi e of Crown Pt. Rd. intersection with Deer Crek Hwy. (Hwy. 32); 10.1 mi ene of Chico. 304 Comment
  CHSC34715  Epilobium minutum M. S. Taylor 1981-5-21 3773 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC42361  Epilobium minutum Lowell Ahart 1987-5-6 5530 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC873441  Epilobium minutum A. A. Heller 1914-6-22 11503 Butte edge of forest about Chico Meadows 1219 Comment
  RSA126006  Epilobium minutum E. K. Balls 1957-5-22 22512 Butte N. fork Feather River, above Camp Rogers, on trail to Buck s Lake. 655 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC36555  Epilobium pygmaeum L. Ahart 1982-7-10 3669 Butte Ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi w of Gridley. In a duck pond. 35 Comment
  CHSC101835  Epilobium torreyi Lowell Ahart 2009-5-23 15755 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on east side of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC113442  Epilobium torreyi Lowell Ahart 2014-7-10 19621 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC29658  Epilobium torreyi J. D. Jokerst 1980-5-28 794 Butte Top of North Table Mt., S of Cherokee Rd. In vernal pools. 403 Comment
  CHSC11940  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 1500 Comment
  RSA4627  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 1500 Comment
  UC600576  Equisetum arvense H. F. Copeland 1927-5-6 225 Butte Jonesville Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  CHSC30729  Equisetum laevigatum M. S. Taylor; R. Schlising 1980-7-6 3081 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  CHSC87800  Equisetum laevigatum Paul Maslin 2004-4-15 17 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610629E 4414004N. On edge of Big Chico Creek. 274 Comment
  UC1586568  Equisetum laevigatum Lowell Ahart 1991-6-22 6663 Butte near Lake Oroville (w of Springtown Rd.) 304 Comment
  CHSC45212  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC97293  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS122250  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC49242  Eragrostis mexicana subsp. virescens Vernon Oswald 1988-8-8 3686 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In irrigation ditch bordering Nelson Rd. 47 Comment
  SEINET10954137  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 Ahart 8306 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC75985  Eragrostis pectinacea var. pectinacea Lowell Ahart; Vernon H. Oswald 1999-8-13 8152 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10555837  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 Butte Ca. 1/4 mile N of the Washout, between River Road and the Scaramento River, ca. 10 mi W of Chico. 37 Comment
  CAS-BOT-BC278512  Eragrostis pilosa var. pilosa John Thomas Howell 1959-9-20 34675 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC174176  Eremogone cliftonii M. S. Taylor 1981-5-21 3793 Butte N side of Mayaro Rd, ca. 0.5 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70 609 Comment
  CAS-BOT-BC181702  Eremogone kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte About 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City 1767 Comment
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  UC1609016  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  SEINET10473505  Erigeron Mary Susan Taylor 1981-5-21 Taylor 3788 Butte In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. 1600 Comment
  CHSC97735  Erigeron bonariensis Lowell Ahart 2007-11-3 14574 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CAS-BOT-BC300686  Erigeron glacialis var. glacialis V. Oswald; L. Ahart 1988-7-26 3622 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC50792  Erigeron petrophilus var. sierrensis Vernon Oswald; Lowell Ahart 1990-7-31 4414 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 902 Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC38341  Erigeron sumatrensis Vernon Oswald 1983-9-10 1039 Butte Upper Bidwell Park, Chico, near the streamlet just west of the parking lot at Diversion Dam. 121 Comment
  RSA0037008  Eriochloa acuminata var. acuminata Lowell A. Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CAS-BOT-BC259399  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  SEINET7545219  Eriogonum marifolium E. B. Copeland 1930-1 410 Butte Above Jonesville 610 Comment
  CAS-BOT-BC261716  Eriogonum nudum var. oblongifolium Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC42028  Eriogonum nudum var. pubiflorum Lowell Ahart 1986-8-15 5391 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  CHSC39088  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-28 3931 Butte E of Jonesville in N part of county, on road to Scotts John Creek. 1889 Comment
  CHSC112071  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; 'Magalia Serpentine' (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  RSA0089890  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection, Highway 70. 457 Comment
  SEINET5332483 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highwya 70 in Feather River Canon at the turnoff to Pulga. Comment
  SEINET11934477  Eriogonum umbellatum var. polyanthum Unknown 1985-1 5164 Butte 50 yrds S of the road to the Forbestown Res., about 2.5 mi NE of Forbestown 884 Comment
  CAS-BOT-BC265210  Eriogonum umbellatum var. speciosum James L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  CAS-BOT-BC265215  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte Pulga Bridge, N. Fk. Feather River, Sierra Nevada 417 Comment
  SBBG28265  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville Comment
  SEINET10871615  Eriogonum ursinum Mary Susan Taylor 1978-7-18 Taylor 1698 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC44046  Eriogonum ursinum var. ursinum L. P. Janeway 1987-6-13 2197 Butte Along Ponderosa Way (Rim Rd) 3.8 NE of Jarbo Gap. East-facing roadcut. 883 Comment
  SEINET11924838  Eriogonum wrightii var. trachygonum Unknown 1974-1 635 Butte along North Honcut Creek,Peter Ahart Ranch,ca 1 1/4 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville 46 Comment
  CHSC94347  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
  SFV3893  Eriophyllum lanatum B. Fuller 1962-5-5 s. n. Butte Sierra Nevada Paradise. At the intersection of Harrison and Stearns Roads. Beside road on rocky slope. 535 Comment
  CAS-BOT-BC308162  Eriophyllum lanatum var. grandiflorum Frank W. Peirson 1926-6-21 6766 Butte 10 miles east of Chico on the Humboldt Road Comment
  RSA388909  Eriophyllum lanatum var. grandiflorum C. B. Wolf 1937-5-18 8732 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  SBBG8177  Eriophyllum lanatum var. integrifolium H. and M. Dearing 1938-6-21 2045 Butte 15 mi N of Chico Comment
  RSA715730  Erodium brachycarpum L. P. Janeway 2005-3-10 8357 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CHSC100985  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  HSC8490  Erodium cicutarium William J. Ferlatte 1963-5-11 41 Butte Chico State College campus Comment
  UC203586  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  CHSC9287  Erysimum capitatum var. capitatum D. C. Burns 1971-4-3 116 Butte At base of cliff, ca. 3.5 mi e of Jarbo, (2.5 mi w of 1st bridge that crosses the n fork of the Feather River). 609 Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC4611  Erythranthe cardinalis R. Carter 1996-6-26 460 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. up E side Berry Cr. 457 Comment
  CHSC51017  Erythranthe cardinalis Lowell Ahart 1990-8-15 6581 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  SEINET8340802  Erythranthe glaucescens Sandra C. Morey 1978-4-10 17 Butte highway 32, ca. 7.5 mi e of junction with Highway 99 at Chico. 515 Comment
  CHSC113517  Erythranthe guttata Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC3281  Erythranthe guttata M. L. Hillier 1966-5-9 Butte In rd. side ditch. Humbug rd. 2 miles n. of covered bridge. Comment
  CHSC44669  Erythranthe guttata R. Banchero 1980-6-6 202 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  SJSU969  Erythranthe guttata A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  CHSC44783  Erythranthe microphylla R. Banchero 1980-4-7 89 Butte Along LaPort Rd 3.4 mi S of its jct with the Ord-Bangor Hwy, 0.1 mi SW of the jct of LaPorte and Kings Ranch Rd. 137 Comment
  CHSC49007  Erythranthe primuloides Vernon Oswald 1983-7-6 823 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  CHSC27202  Erythrina corallodendron Pam Moyer 1971-10-30 54 Butte CSUC Campus. NE corner of Bidwell Mansion porch. Comment
  CAS-BOT-BC133257  Erythronium M. S. Taylor 1980-3-8 2378 Butte Ca. 100 ft sw of Pulga bridge over Hwy 70, ca. 28 mi ne of Oroville 487 Comment
  CHSC32640  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3462 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  RSA325090  Erythronium multiscapideum M. S. Taylor 1981-4-8 3518 Butte N side of Concow road, ca. 3/4 mile S of its jct. with Ponderosa Way/Rim road, ca. 6 air miles N of Jarbo Gap on highway 70, ca. 21 air miles N of Oroville. 854 Comment
  UC1731059  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit of serpentine hill directly east of town Comment
  UC843861  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CAS-BOT-BC504526  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte About 4 miles from Magalia on the Coutlenc road. Comment
  HSC23466  Erythronium multiscapideum J. L. Wilson 1970-2-27 207 Butte Canyon side NE of Paradise, 0.65 mi. E of intersection of the steep gravel rd. and Coutolenc Rd. on the gravel rd., intersection 0.15 mi. NE of intersection of Coutolenc Rd. and skyway 579 Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  CHSC37283  Eschscholzia californica M. S. Taylor 1982-5-2 4388 Butte Pulga serpentine oucrops on n side of Hwy 70 at Pulga bridge, ca 20 mi ne of Oroville. 487 Comment
  CHSC38578  Eschscholzia californica Vernon Oswald 1983-4-10 317 Butte Upper Bidwell Park, Chico, 300 ft w of the parking lot at Day Camp. 91 Comment
  JEPS119618  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte About 5 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  UC855194  Eschscholzia californica A. A. Heller 1938-4-17 15041 Butte slope back of Salmon Hole (e of Chico); Chico Creek 121 Comment
  CHSC24152  Eschscholzia lobbii B. Bunge 1976-4-20 15 Butte Ca. 100 yd of Skyway, 5 mi ese of Chico. 213 Comment
  CHSC31778  Eschscholzia lobbii L. Ahart 1974-4-14 409 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC176139  Eschscholzia lobbii A. A. Heller 1913-3-9 10681 Butte 2 mi n Oroville Comment
  UC176651  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte near Big Chico Creek (e of Chico) Comment
  SBBG17169  Eschscholzia lobbii M. Vincent 1961-3-27 40 Butte Table Mtn, 3 mi E of Cherokee 762 Comment
  CHSC69106  Eucephalus breweri Lowell Ahart 1997-8-1 7787 Butte Near some small streamlets of Little Kemshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC44278  Euonymus occidentalis var. occidentalis V. Oswald; W. Dempsey, D. Perske 1988-6-15 3386 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Near the bottom of a canyon slope along the W. Branch of Mud Creek. 853 Comment
  SEINET10475035  Eupatorium occidentale Mary Susan Taylor 1980-8-2 Taylor 3216 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10475036  Eupatorium occidentale Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4206 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  UCD34285  Euphorbia hooveri Beecher Crampton 1978-8-21 9659 Butte Ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  CHSC613  Euphorbia lathyris K. Stern 1963-8-8 Butte Near Chico in an orchard. Comment
  UCR115041  Euphorbia nutans G. Fred Hrusa, T. D. Wilfred 1996-9-6 13572 Butte E side of Butte Creek, c. 0.5 mi. NE of confluence with Howard Slough, and immediately below McPherrin Dam (private and scheduled for removal). 23 Comment
  CDA18873  Euphorbia oblongata R. Hill, L. Pejsa 2000-5-15 PDR 1174221 Butte along Bille Rd., Paradise. 0 Comment
  RSA572325  Euphorbia ocellata var. ocellata Robert F. Hoover 1938-8-2 3718 Butte 7 miles southeast of Chico. Comment
  CDA38820  Euphorbia peplus L. Ahart 2012-4-17 17877 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) sothwest of Oroville. 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
  CHSC50816  Eurybia integrifolia Vernon Oswald 1990-7-23 4381 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  CHSC97781  Eurybia radulina L. P. Janeway 2007-8-12 9158 Butte Northern High Sierra Nevada. Near junction of Bald Rock Road and Road 21N31Y, 2.3 km south of 'town' of Brush Creek. 1001 Comment
  CHSC21047  Euthamia occidentalis M. S. Taylor 1975-10-3 926 Butte At bridge over slough on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC27262  Fatsia japonica P. Moyer 1971-10-30 52 Butte CSUC Campus. Front of 'A' Bldg. 60 Comment
  CHSC93854  Festuca Lowell Ahart 2006-5-19 12635 Butte Road gutter, 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
  SEINET10508573  Festuca californica Lowell Ahart 1985-5-15 Ahart 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC109857  Festuca californica var. californica L. P. Janeway 2012-6-7 10870 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
  CHSC50439  Festuca elmeri Vernon Oswald; Lowell Ahart 1990-6-27 4325 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). 1109 Comment
  CHSC109547  Festuca microstachys L. P. Janeway 2012-6-7 10865 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SEINET231715 Image available Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4704 Butte Ca 2 mi SW of Forbestown Diversion Dam NE of Forbestown Yellow Pine Forest 700 Comment
  JEPS87486  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte about 6 (air) mi n.e. Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River, s. of Fall River) 1036 Comment
  RSA4661  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC62946  Frangula californica subsp. tomentella Lowell Ahart 1968-5-8 972 Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC62908  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11882 Butte Canyon of Chico creek 5 mi. e. of Chico. The type was collected about 50 mi. to the s., probably along the Bear River. Comment
  CHSC50841  Frangula purshiana Vernon Oswald; Lowell Ahart 1990-7-19 4364 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.3 mi west of the Plumas County line. 1981 Comment
  SEINET10493572  Frangula purshiana Mary Susan Taylor 1981-5-13 Taylor 3703 Butte 4000 ft. T22N R6E ne sec 5, Pulga SE quad. Along creek crossing 22N66X (old RR bed) just N of Foreman Creek, ca. 1.5 mi S of Four Trees Rd, ca. 0.5 mi W of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  CHSC23536  Fritillaria M. S. Taylor 1975-3-3 401 Butte Along Richardson Springs creek, ca. 1 mi n of the Hotel, ca. 8 mi n of Chico. 121 Comment
  CAS-BOT-BC504378  Fritillaria Saichi Kawaha 1968-5-4 388 Butte James Ripley's property, graham Road, Paradise 640 Comment
  CAS-BOT-BC130317  Fritillaria eastwoodiae A. A. Heller 1938-5-1 15058 Butte Above the reservoir beyond Magalia on Highway Comment
  CHSC2280  Fritillaria eastwoodiae N. Maxwell 1929-4-8 Butte Honey Run. 243 Comment
  CHSC32659  Fritillaria eastwoodiae M. S. Taylor; L. Hanson 1981-3-16 3404 Butte E side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70 (to just across State Park line), ca. 7 mi n of Oroville. 304 Comment
  CHSC4173  Fritillaria eastwoodiae D. B. Joley 1967-4-10 19 Butte Ca. 10 feet s of Honey Run Rd. and ca. 9.1 miles e of corner of Skyway and Honey Run Rd., Chico. 152 Comment
  CHSC88621  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 268 Butte Plumas National Forest. 792 Comment
  CHSC88630  Fritillaria eastwoodiae Linnea Hanson 1987-4-27 294 Butte Plumas National Forest. Old Utah Mine. 762 Comment
  CAS-BOT-BC505285  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Above the road cut bank along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  SEINET3992162  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  CHSC2286  Fritillaria recurva N. Maxwell 1929-3-17 Butte Forest Ranch. 548 Comment
  RSA32885  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte Near Stirling Comment
  CHSC99098  Fumaria officinalis Elena Alfieri 2008-2-22 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Located on a shaded, southeast-facing slope overlooking the Big Chico Creek picnic area, and adjacent to Wildwood road (just before it dead ends); north side of Lindo Channel near its beginning at Big Chico Creek. 85 Comment
  JEPS114198  Fumaria officinalis Elena Alfieri 2008-5-19 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Comment
  CHSC38655  Galium aparine Vernon Oswald 1983-3-13 162 Butte Upper Bidwell Park, Chico, along Yahi Trail between Salmon Hole and Parking area P (1.7 mi E of the power lines). 182 Comment
  CHSC47477  Galium aparine Lowell Ahart 1974-4-14 398 Butte Peter Ahart Ranch, about 1 mi north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  CHSC86591  Galium aparine L. P. Janeway; Barbara Castro, Eric Ryan 2003-4-19 7759 Butte Sacramento Valley. City of Chico residential area; West 12th Street between Broadway and Oakdale. 59 Comment
  RSA754579  Galium aparine L. Ahart 2009-4-17 15548 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
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  SEINET10836823  Galium bolanderi Mary Susan Taylor 1981-5-29 Taylor 3815 Butte T22N R5E ne sec 22, Pulga SW quad. Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. Comment
  CHSC48884  Galium divaricatum Vernon Oswald 1985-5-1 1741 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the S edge of the Golf course. 97 Comment
  CHSC47041  Galium grayanum R. A. Schlising; L. Janeway 1988-7-22 4621 Butte NE of Philbrook Lake, near county line. 1950 Comment
  CAS-BOT-BC124079  Galium grayanum var. grayanum Amos Arthur Heller 1914-8-7 11668 Butte Summit east of Jonesville 2133 Comment
  UC600426  Galium grayanum var. grayanum E. B. Copeland 1931-6-19 Butte at The Summit Jonesville Comment
  CHSC61008  Galium murale Lowell Ahart 1993-5-31 6956 Butte In Nature Garden, Durham Elementary School, Durham. 51 Comment
  CHSC55586  Galium porrigens var. tenue Dan Morgan 1991-4-21 19 Butte Indian Springs Rd., .3 mi W of Neal Rd., Paradise. 243 Comment
  JEPS26674  Galium porrigens var. tenue P. C. Hutchison 1961-6-9 2093 Butte 7 mi s Jarbos Gap (along US Alt. 40); canyon of the north fork of the Feather River Comment
  SEINET10500737  Galium porrigens var. tenue Mary Susan Taylor 1981-2-11 Taylor 3380 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
  CHSC35215  Galium tricornutum M. S. Taylor 1981-5-1 3584 Butte E side of Hwy 70, ca. 4 air mi NW of Oroville. 91 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  CHSC113472  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC392192  Galium triflorum E. B. Copeland July 1929 Butte Jonesville 1550 Comment
  JEPS98564  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte 5 air miles SW of Oroville (margin of the Thermalito Afterbay, W side of the access road to the boat ramp, W side of Larkin Road) 42 Comment
  SEINET12137665  Garrya fremontii Unknown 1985-1 4835 Butte E of Magalia 750 Comment
  CHSC26705  Gayophytum diffusum subsp. parviflorum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1459 Butte On e side of Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  UC398937  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Butte Creek Jonesville Comment
  SEINET10453074  Gayophytum heterozygum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4224 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC46456  Gayophytum humile V. Oswald; L. Ahart 1989-6-27 3818 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 1981 Comment
  CHSC34812  Genista monspessulana M. S. Taylor 1981-5-5 3613 Butte W side of spur rd, ca. 1/2 mi n of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC3487  Genista monspessulana Roger Jaegel 1966-4-20 112 Butte Located on Chico - Paradise road, four miles east of Chico. Comment
  RSA638255  Genista monspessulana Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8109 Butte Table Mountain; along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  CHSC115899  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2015-8-12 4478 Butte Butte Creek House Meadow Ecological Reserve, along Humbug Road. 1767 Comment
  CHSC62557  Gentianopsis simplex B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 157 Butte Meadow along the Skyway (Humbug Summit Rd) ca 5.5 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC42772  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of the creek. 1097 Comment
  CHSC29805  Gilia capitata subsp. mediomontana M. S. Taylor 1979-8-4 2174 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70 (old 40), ca. 30 mi n of Oroville. 487 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
  CHSC38591  Gilia capitata subsp. pedemontana Vernon Oswald 1983-5-18 503 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  UC879807  Gilia capitata subsp. pedemontana Ira W. Clokey 13384 a Butte near Chico (at the Hooker Oak); near Chico, at the Hooker Oak Comment
  CHSC90052  Gilia tricolor Peggy Fain 1991-4-21 20 Butte Ca. 2 km. E. of Richardson Springs Hotel, Musty Buck Preserve. 213 Comment
  SEINET10837194  Gilia tricolor Mary Susan Taylor 1980-3-1 Taylor 2350 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
  SEINET12318342  Gilia tricolor K. D. Johnson 1978-1 18 Butte NW side of Neal Rd, 3.1 mi SW of intersection with Skyway, Paradise 305 Comment
  JEPS98445  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 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
  SEINET10460574  Githopsis pulchella subsp. campestris Robert A. Schlising 1964-6-11 Schlising 2723 Butte Few miles south of Paradise along Honeyrun Road Comment
  UCSB40621  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 3 miles up Corcow Road from Hwy 70 Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  UC1562276  Glinus lotoides Lowell Ahart 1990-7-2 6537 Butte near McCabe Creek (below the high water line of Lake Oroville, about 1/2 mi sw of the Enterprise Bridge across Lake Oroville) 243 Comment
  CHSC43176  Glyceria elata Robert Banchero 1981-7-19 611 Butte Big Crane Valley. Meadow. 1584 Comment
  CHSC61370  Glyceria elata Lowell Ahart 1993-7-22 7090 Butte Along the edge of Fall River, on the west side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC61541  Glyceria elata Lowell Ahart 1993-7-6 7050 Butte In a meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  UC600757  Glyceria elata H. F. Copeland 1932-7-13 Butte Jonesville Comment
  CHSC88067  Glycyrrhiza lepidota R. D. Fischer 2004-6-12 153 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in large meadow at the bottom of 10 Mile House Road, e. side of road and Big Chico Creek, near the gated end of the park property. 220 Comment
  RSA713012  Gnaphalium luteoalbum L. Ahart 2005-12-11 12511 Butte Rice Experiment Station between the Main Ditch ad Stine Lateral, on the N side of Hamilton Road, 1/4 mile E of Riceton Hwy 2.25 miles air E of Biggs. 30 Comment
  JEPS114999  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC37092  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte Ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  CHSC49678  Goodyera oblongifolia Vernon Oswald 1983-8-4 949 Butte Near Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1188 Comment
  JEPS123885  Gratiola ebracteata Lowell Ahart 2015-5-5 20140 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  CAS-BOT-BC305289  Grindelia hirsutula J. D. Jokerst; M. S. Taylor 1979-10-13 389 Butte Jordan Hill Rd (Ponderosa Way), 2.8 mi n of jct with Concow Creek, ca. 4 mi ne of Lake Concow 609 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
  CHSC78122  Hedypnois cretica Lowell Ahart 2000-5-31 8429 Butte Below the high water line of Lake Oroville, about 400 yards est of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CAS-BOT-BC306291  Hedypnois cretica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CHSC89488  Helenium puberulum R. D. Fischer 2004-8-24 440 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 near gated end of park property. At edge of road in drainage ditch. 216 Comment
  CAS-BOT-BC309401  Helenium puberulum Lowell Ahart 1987-6-9 5721 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC95076  Helianthella californica var. nevadensis L. P. Janeway 2006-6-25 8700 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  JEPS34876  Helianthus bolanderi H. A. Dutton 1921-1-1 Butte Hooker Oak Chico, Hooker Oak Comment
  CAS-BOT-BC134034  Heliotropium M. S. Taylor 1975-10-3 943 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico 36 Comment
  JEPS96030  Heliotropium curassavicum Vernon H. Oswald and Lowell Ahart 1996-6-10 7748 Butte near U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R Sacramento R. Nat'l Wildlife Refuge (edge of farm rd. bordering slough e. side of Little Grant, near Riparian Sanctuary); , Llano Seco Unit 28 Comment
  CHSC116133  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  SEINET10935957  Heliotropium europaeum Mary Susan Taylor 1975-10-3 Taylor 943 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CAS-BOT-BC314998  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  RSA505367  Hemizonia fitchii R. C. Bacigalupi, G. Thomas Robbins 1955-7-15 5301 Butte 3.5 miles E of Chico and 0.5 mile S of the Hooker Oak. 81 Comment
  CHSC48255  Herniaria hirsuta subsp. hirsuta Vernon Oswald 1987-4-16 2331 Butte Butte Creek Preserve on the n side of Butte Creek e of the Skyway. On a flood plain of the creek. 74 Comment
  CHSC84124  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SEINET3450929  Hesperolinon californicum Unknown 2003-6-18 10289 Butte Oroville, Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  JEPS120917  Hesperolinon micranthum Lowell Ahart 2013-5-27 18713 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  CHSC51862  Heterocodon rariflorum L. P. Janeway 1988-6-25 2899 Butte Small meadow along Bull Hill Rd 2.9 mi from the Skyway. 1508 Comment
  JEPS93842  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ione oak tree, nw of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  SEINET10460724  Heterocodon rariflorum Lowell Ahart 1982-6-15 Ahart 3572 Butte On a lava cap, about 1.5 miles east of Camp 18, about 8 miles east of Feather FALls 1000 Comment
  SEINET10460748  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2718 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  CAS-BOT-BC310277  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mile above Pentz on the Paradise grade Comment
  SEINET10839198  Heterotheca grandiflora Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4293 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  UC1192274  Hibiscus lasiocarpos Malcolm A. Nobs and S. Galen Smith 1949-7-29 1090 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CHSC69039  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  CHSC94562  Hirschfeldia incana Lowell Ahart 2006-9-13 13330 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  CHSC38521  Hoita macrostachya Vernon Oswald 1983-7-28 936 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 207 Comment
  CHSC39560  Hoita macrostachya Lowell Ahart 1983-7-24 4201 Butte About 1/2 mile south-west of the intersection of the Oroville Forbestown Road and Black Bart Road, about 6 miles south-west of Forbestown. 750 Comment
  CHSC48569  Hoita macrostachya Vernon Oswald 1987-7-20 3141 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi w of the dam for Crouch Ditch. 79 Comment
  CHSC88064  Hoita macrostachya R. D. Fischer 2004-6-12 150 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, next to pond off the Annie Bidwell Trail, 150 ft s. of 10 Mile House Trail junction. 248 Comment
  POM27988  Hoita macrostachya C. C. Bruce 1897-06 1980 Butte Little Chico. Comment
  SEINET7930197  Hoita orbicularis Lowell Ahart 1985-7-24 5150 Butte East of the dirt road to the Forbestown Res, about 2 1/2 miles north-east of Forbestown.; 0 869 Comment
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  CHSC71214  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte About 3/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 388 Comment
  CHSC101125  Hordeum murinum subsp. glaucum Lowell Ahart 2009-5-8 15670 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC2154  Hordeum murinum subsp. glaucum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CAS-BOT-BC284885  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-16 37568 Butte Magalia 731 Comment
  CHSC8225  Hordeum murinum subsp. leporinum M. Banning 1969-3-7 9 Butte Across from Chico Jr. Hi. on S. side of Memorial Way, Chico. 60 Comment
  SEINET10483365  Horkelia fusca subsp. parviflora Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4201 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  UC481576  Horkelia fusca subsp. tenella H. F. Copeland 1922-8-20 458 Butte Jonesville Comment
  CHSC99565  Horkelia tridentata subsp. tridentata L. P. Janeway 2008-5-26 9387 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CAS-BOT-BC536253  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  SEINET3836429 Image available Hosackia argophylla var. fremontii A. A. Heller 1940-6-5 15699 Butte Feather River, between bridge and mouth of the West Branch of North Fork Comment
  CHSC45283  Hosackia incana Vernon Oswald 1987-6-29 3040 Butte Bald Mt., 0.4 mi s of the Lookout. 1706 Comment
  CHSC25265  Hosackia oblongifolia M. S. Taylor 1977-6-27 1395 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 60 Comment
  JEPS118655  Hydrocotyle sibthorpioides L. P. Janeway 2010-6-9 9994 Butte Sacramento Valley. Chico; southeast corner of Citrus Avenue and Mansion Avenue, area between sidewalk and curb. Chico 7.5' quad. Comment
  CHSC51993  Hydrocotyle umbellata B. Castro 1987-9-22 250 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  JEPS124324  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS98507  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC8748  Hydrocotyle verticillata S. Chulasmai 1966-5-20 40 Butte Upper Bidwell Park roadside [Helocsirge spring]. Comment
  CAS-BOT-BC175967  Hypericum Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek 50 Comment
  SD3069  Hypericum anagalloides E. B. Copeland 1929-7-16 Butte Jonesville 1550 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
  RSA4237  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CDA5079  Hypericum perforatum D. G. Kelch 2006-8-2 6 .342 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC31638  Hypericum perforatum Lowell Ahart 1977-6-3 1406 Butte Peter Ahart Ranch, Honcut. Along the banks of North Honcut Creek. 50 Comment
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  POM195674  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  SEINET6190908 Image available Iris douglasiana A. A. Heller 1919-1 13102 Butte Butte County Comment
  CAS-BOT-BC133553  Iris hartwegii John Thomas Howell 1978-4-17 52826 Butte Skyway near Neal Road, Paradise 609 Comment
  RSA136683  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22528 Butte 3 mi. SE from turnoff, Hwy 32 to De Sabla. 671 Comment
  RSA137403  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22525 Butte State Highway 32, 6.9 miles south from Lomo, at junction with road from Butte Meadows 1037 Comment
  SEINET263499  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte Ca. 15 miles E of Chico at jct of Hwy 32 and Sugar Pine Place 1000 Comment
  CHSC55627  Iris macrosiphon Dan Morgan 1991-4-21 20 Butte Indian Springs Rd., 0.3 mi w of Neal Rd. Paradise 243 Comment
  CHSC117402  Isoetes howellii Lowell Ahart 2016-5-30 20881 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  SEINET6164857  Isoetes howellii B. Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville. 31 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  JEPS95012  Isolepis setacea Lowell Ahart 1997-10-20 7929 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork Feather River, about 1/4 mi n of bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork Feather River 914 Comment
  CAS-BOT-BC102301  Juglans hindsii John Thomas Howell 1959-9-20 34703 Butte Feather River Highway 2 miles below West Branch bridge 213 Comment
  CHSC49696  Juncus acuminatus Vernon Oswald 1985-5-20 1776 Butte Oroville Wildlife Area near the outlet of Thermalito Afterbay. Comment
  CHSC38915  Juncus articulatus Vernon Oswald 1983-7-13 864 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. 85 Comment
  CHSC56894  Juncus articulatus L. P. Janeway; C. A. Janeway 1986-10-12 1922 Butte North side North Fork Feather River at Pulga. Between river and railroad grade. 426 Comment
  CHSC61345  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte on the west side of Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS113326  Juncus articulatus L. P. Janeway, Marcia Waterway, Martin Lechowicz 2006-8-3 8823 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing creek. Comment
  JEPS114587  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. Comment
  CHSC61516  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte Large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  RSA715584  Juncus bufonius var. bufonius L. Ahart 2005-4-14 11719 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC31842  Juncus bufonius var. congestus L. Ahart 1980-6-15 2378 Butte On a sand bar on the edge of a large wash, ca. 1.5 mi n and 1 mi e of Honcut. Peter Ahart Ranch. 50 Comment
  CHSC44245  Juncus capillaris V. Oswald; L. Ahart 1988-7-13 3574 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  CHSC116708  Juncus capitatus Lowell Ahart 2016-5-15 20833 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  UC1609270  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7101 Butte about 6 air mi ne of Feather Falls (about 100 yards w of the bridge across Fall River); w side of Fall River 1036 Comment
  JEPS120918  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the E side of Black Bart Road, about 3/4 road miles SW of the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  CHSC30954  Juncus dubius L. Ahart 1980-7-4 2458 Butte Small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC111289  Juncus effusus subsp. effusus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16758 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of gravel Lumpkin road; UTM 10 655439 east, 4387540 north, +/- 49 feet (NAD83). Comment
  CHSC38921  Juncus ensifolius Vernon Oswald 1983-6-24 765 Butte Upper Bidwell Park, Chico, near the retaining wall at the e end of Centennial Ave. 85 Comment
  JEPS106096  Juncus ensifolius Lowell Ahart 2004-8-2 11328 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  POM183191  Juncus ensifolius H. F. Copeland 1930-7-25 1357 Butte Jonesville. 1524 Comment
  RSA325886  Juncus ensifolius L. Ahart, P. Ahart 1983-7-29 4223 Butte Ca. 2 miles S of Milsap Bar, ca. 23 miles NE of Oroville. 750 Comment
  CHSC30359  Juncus hemiendytus var. hemiendytus J. D. Jokerst; R. A. Schlising 1980-6-16 841 Butte Near Butte Meadows, 0.1 mile south of the jct of Humboldt Rd and Skyway. 1341 Comment
  SEINET11787352  Juncus leiospermus M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5407 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  CAS-BOT-BC110104  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-14 3434 Butte Peter Ahart Ranch, about 2 miles north and 0.5 mile east of Honcut. 50 Comment
  CHSC93494  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12603 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 327 Comment
  CHSC93497  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12585 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 395 Comment
  JEPS110152  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12581 Butte On the bottom of a tire track through a marshy area, about 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parkin area, North Table Mountain, about 7 miles (air) north of Oroville 377 Comment
  UC1438371  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1702 Butte ca 7 mi n Oroville (on top of Table Mountain); Table Mountain 400 Comment
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  JEPS114977  Juncus occidentalis Lowell Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  CHSC11959  Juncus orthophyllus E. B. Copeland 1929-7-16 347 Butte Jonesville. In marsh. 1550 Comment
  CHSC49621  Juncus orthophyllus Vernon Oswald 1987-7-16 3130 Butte Coon Creek just w of Bull Hill Rd. (Skyway), between Inskip and Butte Meadows. On the edge of the creek where it crosses meadow. 1539 Comment
  JEPS98491  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  UC600811  Juncus orthophyllus H. F. Copeland 1930-7-28 1371 Butte near Butte Creek House (Government Trail, neighborhood of Jonesville); Jonesville 1828 Comment
  CHSC57160  Juncus oxymeris L. P. Janeway 1988-6-14 2763 Butte Northwest side of canyon of Little Chico Creek, ca 2 air mi south of Ten Mile House. 259 Comment
  JEPS121939  Juncus oxymeris Lowell Ahart 2014-7-7 19595 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS98992  Juncus patens Lowell Ahart 2001-7-6 8881 Butte 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
  CHSC49626  Juncus tenuis Vernon Oswald 1987-5-12 2390 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. Near a dredger pond. 80 Comment
  CHSC107589  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  SD121516  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Peter Ahart Ranch, about 2 miles north and I(c) mile east of Honcut, growing on wet bare red soil around the edges of a large vernal pool in one of the farmed fields. Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  CAS-BOT-BC236762  Keckiella breviflora Lowell Ahart 1976-6-4 s.n. Butte Peter Ahart Ranch, near North Honcut Creek 45 Comment
  POM202704  Keckiella breviflora subsp. glabrisepala J. H. Morrison s.n. Butte Durham. Comment
  RSA34926  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  SEINET10547830  Keckiella breviflora subsp. glabrisepala Mary Susan Taylor 1980-6-14 Taylor 2883 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CHSC58281  Keckiella breviflora var. glabrisepala Lowell Ahart 1992-5-9 6765 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  JEPS115826  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC37067  Keckiella lemmonii L. Ahart 1982-9-29 3841 Butte Along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi ne of Strawberry Valley. 1200 Comment
  JEPS7915  Keckiella lemmonii Rimo Bacigalupi with Richard Hauke 1954-7-15 4727 Butte 3.1 mi below Nimshew (between Nimshew and Centerville, along Humbug Road, on the Butte Creek canyonside) 518 Comment
  NY790317  Keckiella lemmonii C. B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 0.7 mile northwest of Magalia at northwest side of Magalia Reservoir. 731.5 Comment
  UCSB63914  Kelloggia galioides Ahart, Lowell 1997-8-1 Butte T24N, R5E, northwest 1/4 Section 18; , on the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City; Yellow Pine Forest 1432 Comment
  CHSC51923  Kickxia elatine L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3091 Butte Just west of Murphy Slough and Golden State Island near Sacramento River. 38 Comment
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC30528  Koeleria phleoides N. E. H. Prouty 1980-4-28 156 Butte Near junction of Pentz Rd. with Pentz-Magalia Hwy. 207 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
  CDA2619  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Road, Oroville. 0 Comment
  CHSC66663  Lactuca saligna Vernon H. Oswald; Lowell Ahart 1996-7-22 8080 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Field on the W side of the levee at the SW corner of Tract 6, Sanctuary 1. 30 Comment
  SEINET10474760  Lactuca scariola var. integrata Mary Susan Taylor 1977-8-16 Taylor 1452 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC102617  Lactuca serriola Lowell Ahart 2009-7-9 16024 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
  CHSC111604  Lactuca serriola Lowell Ahart 2012-8-10 18417 Butte The north side of the parking area, Bidwell Mansion, Chico. Uncommon. Urban. 60 Comment
  OBI15967  Lagophylla glandulosa Robert F. Hoover 1965-10-16 9719 Butte Deer Crk rd E of Chico Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC341300  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CAS-BOT-BC341305  Lagophylla glandulosa H. M. Hall 1914-8-1 9829 Butte Foothills near Bidwell Bar, (Mt. Ida) Comment
  HSC102686  Lamarckia aurea J. P. Smith 2013-5-5 13700 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CHSC90199  Lamium amplexicaule Robert Kissane 1989-4-23 18 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  SEINET10497958  Lamium amplexicaule Mary Susan Taylor 1975-3-25 Taylor 425 Butte Chico. Comment
  CHSC33352  Lasthenia fremontii R. M. Winchell 1980-4-23 4 Butte N of Chico. Between Singer Creek and Cana-Pina Road. Comment
  UC1562501  Lasthenia fremontii Barbara Ertter with Lowell Ahart 1986-4-13 5894 Butte ca. 2 airmiles nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  UCSC004637  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte T17N, R4E, southwest 1/4 Section 4, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 26 Comment
  UCSC004638  Lasthenia glabrata subsp. glabrata Lowell Ahart 2005-6-1 11843 Butte T23N, R15E, Section 30, Hwy 70, east of the Plumas Co Airport, about 3 miles east of Beckwourth 1412 Comment
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  JEPS88906  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte about 3.5 mi (air) nw Oroville (n of the corral, on the n side of the bend in Cottonwood Road, about 0.25 mi w of Highway 70) 57 Comment
  JEPS95616  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte 3 1/2 air miles NW of Oroville (N of the corral, on N side of the bend in Cottonwood Road, about 1/4 mi W of Hwy 70) 57 Comment
  CAS-BOT-BC213346  Lathyrus jepsonii subsp. californicus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC113653  Lathyrus latifolius L. P. Janeway 2014-5-29 11279 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC30799  Lathyrus nevadensis M. S. Taylor; J. Jokerst 1980-4-18 2509 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC48509  Lathyrus nevadensis var. nevadensis Vernon Oswald 1984-4-9 1125 Butte Feather Falls Trail, 0.75 trail mi. n of the trail head at the end of Bryant Ravine Road. 701 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 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
  JEPS102569  Lavatera cretica Lowell Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 1/4 miles (air) NW of Honcut, about 1 mile south of Oroville. 29 Comment
  CAS-BOT-BC321781  Layia fremontii Lowell Ahart 1980-4-21 2104 Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC31092  Layia fremontii Stephen M. Turek 1980-4-14 1 Butte Ca. 5 yds s of Humboldt Road, 1.7 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  CHSC377  Layia platyglossa V. Holt 1938-3-28 Butte Near Chico. Comment
  JEPS120161  Leersia oryzoides Lowell Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CDA39175  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley. Comment
  CHSC32121  Lemna minuta L. Ahart 1975-1-9 696 Butte In dredger pond near edge of North Honcut Creek, from Honcut go e to Dunstone Dr, stop when at s curve, then go w ca. 1/4 mi to North Honcut Creek; 2 mi n and 3 mi e of Honcut. 60 Comment
  CHSC107892  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-29 10410 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CAS-BOT-BC88806  Lepidium campestre Lowell Ahart 1974-8-9 s.n. Butte 3 miles east of Coldwater Creek. 1676 Comment
  CHSC48322  Lepidium didymum Vernon Oswald 1984-5-27 1209 Butte Sacramento River, Bidwell State Park, near the boat ramp. 39 Comment
  CHSC63700  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC34539  Lepidium nitidum Lana L. Smith 1975-4-5 6 Butte Ca. 0.32 km w of junction of Clark and Pentz Rds. and 1.19 km n of Fallager Creek, 17 km se of Chico. 85 Comment
  SEINET11991676  Lepidium nitidum Unknown 1984-1 9 Butte ca 12 mi NNW of Chico, ca 4 mi N of jct of Meridian Rd & Hwy 99, along W side of Meridian Rd 61 Comment
  CHSC75261  Lepidium nitidum var. nitidum Jennifer Slater 1997-4-6 13 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC106603  Lepidium strictum L. P. Janeway 2011-4-13 10233 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) 59 Comment
  CAS-BOT-BC273956  Leptochloa fusca subsp. fascicularis Forman T. McLean 1921-11-25 29 Butte Nelson Comment
  CHSC31721  Leptochloa fusca subsp. fascicularis L. Ahart 1974-7-20 554 Butte On margins of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1276  Leptosiphon bicolor R. Carter 1964-3-13 42 Butte Bidwell Park, Chico, across from golf course beside building at old rifle range. Comment
  CHSC44221  Leptosiphon ciliatus V. Oswald; L. Ahart 1988-7-13 3579 Butte Road to High Lakes e of Philbrook Reservoir. Outcropping on the n side of the road. 1859 Comment
  SBBG98248  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte woods above Butte Crk Meadows, Jonesville 1828 Comment
  POM219474  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. 1500 Comment
  CAS-BOT-BC123155  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CHSC31181  Lessingia nana M. S. Taylor; R. Schlising 1980-7-5 3059 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, up on edge of forest. 1127 Comment
  SEINET10474776  Lessingia nana Mary Susan Taylor 1980-7-6 Taylor 3059 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
  SD62327  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  SEINET10830261  Lewisia cantelovii Mary Susan Taylor 1980-9-27 Taylor 3342 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  POM253222  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte Treeless summit of Table Mtn. Comment
  CHSC37670  Ligusticum californicum M. S. Taylor 1982-8-16 4997 Butte At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald mt, ca. 3 mi ne of Stirling City. 1645 Comment
  SEINET10454495  Ligusticum grayi Mary Susan Taylor 1978-7-18 Taylor 1679 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
  SEINET10454496  Ligusticum grayi Mary Susan Taylor 1982-8-16 Taylor 4997 Butte T24N R4E se/se sec 11. Pulga NW quad. At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. Mixed Evergreen Forest; 5400 ft. 1646 Comment
  CHSC31351  Limnanthes alba P. Lynn Lester 1980-4-14 21 Butte Ca. 3 yds e of Meridian Rd, ca. 0.1 mi n of Wookey Rd, ca. 0.9 mi s of Pine Cr, ca. 3 mi e of Hwy 99, ca. 7 mi nnw of Chico. 88 Comment
  CHSC118035  Limnanthes alba subsp. alba Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 225 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC38538  Limnanthes alba subsp. alba Vernon Oswald 1983-4-18 337 Butte Upper Bidwell Park, Chico, on the north rim near the head of the west intermittent stream which flows into Sycamore Creek (4000 ft e of the power lines). 286 Comment
  CHSC1007  Limnanthes alba subsp. versicolor V. Holt 1942-4-25 Butte Nimshew grade. 365 Comment
  SEINET6670434  Limnanthes douglasii Vernal Pool team 2001 2001-4-10 32 Butte One mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site Comment
  UCD22634  Limnanthes douglasii Joseph Laferriere 1982-4-18 22 Butte Table Mountain, streambank 1/2 mile east of road, 5 miles north of Oroville. 384 Comment
  CHSC67541  Limnanthes douglasii subsp. rosea James D. Jokerst; M. S. Taylor 1980-3-20 486 Butte 50 m NW of junction of Bruce Rd. and Skyway, SE side Chico. Comment
  UC869482  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (hills below Oak Belt) Comment
  CAS-BOT-BC45927  Limnanthes floccosa subsp. californica A. A. Heller 1917-4-15 12672 Butte Ten miles north of Chico 64 Comment
  CHSC42218  Limnanthes floccosa subsp. californica John E. Hunter 1986-3-30 39 Butte Ca. 1 km e Chico, 50 m s Hwy. 32. 75 Comment
  UC1397276  Limnanthes floccosa subsp. californica T. Niehaus 1965-3-28 371 Butte Table Mountains Comment
  UC1748335  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3046 Butte roadside ditch adjacent to Keefer Rd., ca. 0.25 mi W of Cohasset Hwy Comment
  HSC97048  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte Rice Experiment Station, between the Main Ditch and Stine Lateral, N side of Hamilton Rd., 0.25 mi. E of Riceton Rd. 29 Comment
  UCD169442  Limnophila X ludoviciana Lowell Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 28 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
  UC726826  Linanthus parviflorus A. A. Heller 1942-5-17 16473 Butte between Cherokee and the Oregon City road Comment
  CHSC96950  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CDA41688  Lindernia dubia var. anagallidea T. C. Fuller 1976-8-1 20164 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC117308  Linnaea borealis var. longiflora L. P. Janeway 2016-7-28 12122 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N70 0.9 road-km north of Road 21N20; above the west side of Sly Creek 1.4 air-km northeast of the upper end of Sly Creek Reservoir. 1125 Comment
  CHSC42723  Linnaea borealis var. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 61/2 miles north-east of Feather Falls. 1219 Comment
  CHSC39230  Linum bienne M. S. Taylor; K. Tharp 1983-3-11 5226 Butte Along Foreman Creek Rd leading to Foreman Creek Boat-In Camp on Lake Oroville, off Hwy 162, ne of Oroville. Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  RSA0080120  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC109570  Linum lewisii var. lewisii L. P. Janeway 2012-6-7 10867 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
  CHSC55619  Lipocarpha L. P. Janeway 1986-10-19 1929 Butte In rocks and sand along Butte Creek on west side of Hwy 99. 60 Comment
  UC1562290  Lipocarpha micrantha Lowell Ahart 1990-7-4 6547 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (along McCabe Creek); , McCabe Creek 243 Comment
  UC398906  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville 1500 Comment
  CHSC1649  Lithophragma affine E. Canfield 1904-4-9 Butte Wood adjoining Hooker Oak field. 76 Comment
  CHSC50113  Lithophragma campanulatum Vernon Oswald 1990-5-12 4205 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  CHSC97401  Lithophragma glabrum Robert Fischer 2006-6-11 1007 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of the Humboldt Road junction. UTM: 10634233E, 4441779N. 1752 Comment
  CAS-BOT-BC317349  Lithospermum californicum Helen M. Edwards 1917-6-6 s.n. Butte DeSabla. Comment
  CHSC32735  Lithospermum californicum M. S. Taylor 1981-4-8 3511 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), along Rocky Ridge, ca. 5.5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  SFV3124  Lithospermum californicum M. L. Vincent 1962-4-20 219 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  CHSC46952  Logfia gallica Lowell Ahart 1978-5-15 1719 Butte Field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1562424  Logfia gallica Lowell Ahart 1990-5-25 6480 Butte about 1/8 mi nw Enterprise Bridge (e of the Enterprise Boat Launch Area, below the highwater line of Lake Oroville); Lake Oroville 271 Comment
  CAS-BOT-BC342388  Logfia gallica A. A. Heller 1915-5-17 11880 Butte Along Chico Creek 5 miles east of Chico Comment
  HSC38061  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-10 2468 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CAS-BOT-BC283387  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte Hills, 8 miles N of Oroville 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
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  CHSC82719  Lolium multiflorum Tara Morgan 2002-4-23 46 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  JEPS88228  Lolium multiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7734 Butte U.S. Fish and Wildlife Service parcel btw 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary, Sacramento River Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge 28 Comment
  UCD66074  Lolium multiflorum M. Vincent 1964-4-9 536 Butte Clark Rd., 5 miles south of Pearson Rd. Comment
  CAS-BOT-BC269078  Lolium perenne John Thomas Howell 1951-6-26 27518 Butte Big Bend Mt. 609 Comment
  CAS-BOT-BC271210  Lolium temulentum John Thomas Howell 1963-6-2 39383 Butte Along highway near Pulga, Sierra Nevada Comment
  CHSC104821  Lolium temulentum Lowell Ahart 2010-6-1 16761 Butte Both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 172 Comment
  JEPS108840  Lomatium caruifolium var. denticulatum Lowell Ahart 2006-5-3 12562 Butte Grassy area, about 50 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 391 Comment
  CHSC32594  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1265 Butte Open grassland S of the summit of Campbell Hills. Comment
  CHSC32748  Lomatium macrocarpum M. S. Taylor 1981-4-14 3536 Butte Serpentine ridge between landing site and Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 1/10 mi n of its jct with Concow Rd, ca. 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 1066 Comment
  CDA38463  Lomatium marginatum T. C. Fuller 1962-5-17 8710 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC102185  Lomatium marginatum var. marginatum George W. Hartwell 2009-3-19 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 861 Comment
  CHSC32635  Lomatium utriculatum M. S. Taylor; L. Hanson 1981-4-2 3477 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  CHSC40435  Lomatium utriculatum Lowell Ahart 1985-4-29 4884 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 Comment
  CHSC42632  Lomatium utriculatum Vernon Oswald 1986-4-29 1987 Butte Concow Rd. 1.1 mi sw of Ponderosa Way (Rim Rd.). 853 Comment
  JEPS104014  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  SEINET12121859  Lomatium utriculatum Unknown 1985-1 4976 Butte W of Lunt Road, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  POM78231  Lomatium vaginatum C. C. Bruce 1897-04 2058 Butte Butte Creek Comment
  RSA30430  Lonicera conjugialis A. A. Heller 1915-6-27 11046 Butte Jonesville; Sierra Nevada. 1677 Comment
  CHSC28429  Lonicera hispidula M. S. Taylor 1979-10-5 2238 Butte SE side of Paradise Lke, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CAS-BOT-BC240683  Lonicera interrupta Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut. Near Honcut Creek 50 Comment
  CAS-BOT-BC241436  Lonicera involucrata var. involucrata V. Oswald; L. Ahart 1988-7-26 3631 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 2072 Comment
  UC139418  Lonicera involucrata var. involucrata Mrs. R. M. Austin July 1896 679 Butte Colby Comment
  CHSC21382  Lonicera japonica M. S. Taylor 1975-6-22 784 Butte On SW side of furthest E bridge on California State University, Chico. Comment
  CAS-BOT-BC234842  Lonicera subspicata var. denudata John Thomas Howell 1962-6-15 37467 Butte Magalia 731 Comment
  CAS-BOT-BC200896  Lotus M. S. Taylor 1982-6-24 4734 Butte Se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  CHSC869  Lotus corniculatus D. Bower 1953-8-6 Butte 1B Llano Seco. 30 Comment
  UC726261  Lotus denticulatus A. A. Heller 1940-5-13 15616 Butte 3 mi w Chico (along State Highway 32) Comment
  CDA27215  Lotus incanus Sterling O. Mattoon, J. Harroun 1971-5-27 Butte Along driveway into property, James Knibbs property, Skyway, Stirling City. 0 Comment
  SEINET10452000  Lotus oblongifolius var. nevadensis Mary Susan Taylor 1978-6-24 Taylor 1640 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC426913  Lotus oblongifolius var. oblongifolius E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  SEINET10452007  Lotus purshianus Mary Susan Taylor 1977-8-16 Taylor 1440 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
  SEINET10452014  Lotus scoparius Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4147 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  UC555524  Lotus stipularis var. ottleyi Herbert L. Mason 1927-5-10 3711 Butte ne of Oroville (Cherokee Mine); Table Mt. Comment
  SEINET10874145  Lotus strigosus Lowell Ahart 1985-5-31 Ahart 5034 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
  SEINET10874146  Lotus strigosus Lowell Ahart 1983-5-28 Ahart 4021 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CDA27344  Lotus wrangelianus T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CHSC76002  Ludwigia palustris Lowell Ahart 1999-8-22 8186 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC204453  Ludwigia palustris A. A. Heller 1914-8-13 11683 Butte hills 8 mi. n. Oroville Comment
  CHSC25320  Ludwigia peploides subsp. peploides Hayes; Warner, Schlising 1977-8-23 46 Butte Found in canal at Gray Lodge State Wildlife Refuge. 50 Comment
  JEPS109763  Lunaria annua Dean W. Taylor 2005-7-15 19411 B Butte Stirling City, dirt logging road in Long Ravine ca. 1 mile N from County Road 61 960 Comment
  RSA0065261  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  CHSC41451  Lupinus albicaulis Lowell Ahart 1986-7-2 5338 Butte In clear cut forest, north of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  SBBG29098  Lupinus albicaulis E. B. Copeland 1929-7-17 Butte above Jonesville 609 Comment
  RSA31851  Lupinus albicaulis subsp. purpurascens A. A. Heller 1941-5-22 16138 Butte About a half mile west of Jarboe Pass on state Highway #24. Comment
  SEINET12161341  Lupinus albifrons T. E. Lewis 1978-1 5 Butte on Magalia Hwy, E side of rd ca 50 m S of Pent Rd jct, ca 11km S of Paradise 270 Comment
  UC392199  Lupinus arbustus E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  SEINET5767544 Image available Lupinus arbustus subsp. silvicola E. B. Copeland 1930-1 s.n. Butte Jonesville 1600 Comment
  CAS-BOT-BC8537  Lupinus caeruleus Amos Arthur Heller 1940-4-28 15561 Butte Between the Radio Station and Hooker Oak, east of Chico Comment
  POM27146  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2455 Butte Paradise. Comment
  CDA27451  Lupinus latifolius var. columbianus T. C. Fuller 1962-7-12 9173 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC25006  Lupinus lepidus var. sellulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  CHSC81268  Lupinus microcarpus var. densiflorus J. Trizzino 2001-4-24 49 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Along Big Chico Creek. 91 Comment
  SFV11545  Lupinus microcarpus var. microcarpus M. L. Vincent 1963-6-6 371 Butte Nelson Bar Road at PGE. 300 Comment
  CHSC34691  Lupinus nanus M. S. Taylor 1981-5-14 3717 Butte N side of 23N00.2, 2.5 mi sw of Merrimac on Oroville-Quincy Hwy. 975 Comment
  CHSC90370  Lupinus nanus Joseph Silveira 1982-4-17 5 Butte 65 m ene of Horseshoe Lake and 80 m n of Big Chico Creek, 4 km ne of Chico. 190 Comment
  UCD108989  Lupinus nanus A. A. Heller 1913-3-9 10685 Butte hills two miles north of Oroville. 91 Comment
  UC725745  Lupinus nanus A. A. Heller 1939-3-23 15355 Butte Berkeley Olive Orchard Comment
  UCD109079  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  RSA695519  Lupinus pachylobus L. Ahart 2003-4-8 10050 Butte About 1/8 mi NW of the iron gate and fence, NW of Cherokee Rd, North Table mountain, about 7 mi (air) N of Oroville. 327 Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  RSA0003499  Lupinus quercetorum A. A. Heller 1938-4-3 15010 Butte Roadside 1.5 miles below Cherokee Comment
  POM23591  Lupinus subvexus var. transmontanus C. C. Bruce s.n. Butte Butte Comment
  CAS-BOT-BC329275  Lupinus vallicola Lowell Ahart 1980-5-25 2347 Butte Sierra Nevada. Along Ponderosa Way. 500 Comment
  SEINET10452167  Lupinus vallicola Mary Susan Taylor 1981-5-5 Taylor 3601 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  SEINET10874126  Lupinus vallicola Mary Susan Taylor 1974-3-26 Taylor 95 Butte Ca. 1 mi E of Old City Dump, on Humboldt Rd, ca. 3 mi E of Chico; soil wet, rocky clay. Comment
  SEINET10491007  Lupinus vallicola subsp. vallicola Taylor 1981-5-14 Taylor 3717 Butte Pulga se quad. N side of 23noo.2, 2.5 mi sw of merrimac on oroville-quincy Hwy. Corolla blue and white. Yellow pine forest. Associates: lathyrus Sulphureus, galium bolanderi, arbutus menziesii. 975 Comment
  SEINET10870614  Lupinus vallicola subsp. vallicola Parker 1981-4-21 Parker 10 Butte Corolla bright blue, with pale spot on banner. Large population, ca 5 mi s of Pentz rd, 9.0 km e of hwy 70, ca 17 km ssw of paradise. Road drainage area. Soil a sandy gravel overlying rock. 160 Comment
  CHSC52708  Luzula cascadensis L. P. Janeway 1987-7-5 2441 Butte 0.4 mi E of a spur road from the Concow Road, which is 1.0 mi SW of Jones Meadow. Meadow. 1798 Comment
  UC600797  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville Jonesville (in swamp) 1524 Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  HSC95781  Luzula comosa Jim Jokerst, Robert A. Schlising, L. Ahart 1982-5-8 1563 Butte 2.5 mi E of Forbestown along rd. to Forbestown reservoir, just S of creek Comment
  JEPS121922  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC113425  Luzula comosa var. laxa Lowell Ahart 2014-7-7 19573 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CHSC53714  Luzula macrantha L. P. Janeway 1988-7-2 2948 Butte At upper reach of Brush Creek, ca 1/5 mi S of 'town' of Brush Creek. 952 Comment
  UC1609080  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  UC1191829  Lycopus americanus Herbert L. Mason and Verne Grant 1946-8-14 13025 Butte canal near big pond on Sacramento Outing Club Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  JEPS115254  Lythrum hyssopifolia Lowell Ahart 2009-6-30 15960 Butte West of the Guardian Rock Trail, about 10 yards northwest 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
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CDA5124  Lythrum salicaria L. Ahart 2000-7-2 8551 Butte On the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. Comment
  SD5627  Madia bolanderi E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CAS-BOT-BC342710  Madia elegans Lowell Ahart 1982-6-4 3543 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC342720  Madia elegans Margaret J. Williams; Wayne Roderick 1984-5-25 84- 21 -3 Butte 3.3 mi from Paradise on Honey Run Road 167 Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  CAS-BOT-BC342715  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  UCR219267  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15586 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC46552  Madia elegans subsp. elegans Vernon H. Oswald 1989-7-18 3861 Butte Hwy 32 north of Forest Ranch, slightly north of Headwaters Rd. Roadside. 871 Comment
  CHSC62714  Madia elegans subsp. elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  JEPS104323  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the e side of Ponderosa Way, ca 2 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 578 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 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
  CHSC96962  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  HSC96907  Madia exigua L. Ahart 2006-6-9 12650 Butte E side of Bardees Bar Rd., S of the small stream, about 1/4 mi. SW of the poor bridge scross the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. (air) SW of Pulga 404 Comment
  SEINET10971183  Madia glomerata Mary Susan Taylor 1977-8-17 Taylor 1456 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CAS-BOT-BC342967  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CHSC38380  Madia subspicata Vernon Oswald 1983-4-25 383 Butte Upper Bidwell Park, Chico, on the north rim at the level of the e end of Horseshoe Lake. 152 Comment
  CHSC43625  Madia subspicata Vernon Oswald 1985-5-1 1736 Butte Upper Bidwell Park, Chico, along Yahi Trail just e of Parking Area R. 228 Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC28499  Maianthemum racemosum M. S. Taylor; J. Jokerst 1979-7-21 2152 Butte Along trail below Humboldt Peak, on Humboldt Summit. 2154 Comment
  CAS-BOT-BC510729  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville at 'the Summit 640 Comment
  CDA13274  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13122 Butte Plumas National Forest; N ridge above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC84639  Malus sylvestris Bryan Gabbard 2002-4-30 56 Butte Paradise Lake. Found two feet from the water's edge next to the path. Comment
  CHSC1036  Malva neglecta F. Johnson 1937-6-4 Butte Near Chico. 57 Comment
  CHSC29975  Malva nicaeensis Lowell Ahart 1980-5-14 2267 Butte Peter Ahart Ranch, ca 1.5 mi N and 1 mi E of Honcut. 15 Comment
  CDA38815  Malva parviflora L. Ahart 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  POM68435  Marah fabacea C. C. Bruce 1897-05 s.n. Butte Big Chico. Comment
  RSA157758  Marah fabacea I. L. Wiggins 1925-3-22 1468 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CHSC8557  Marah fabacea var. agrestis M. MacArthur 1968-6-18 211 Butte E side Big Chico Creek and just S of bridge by PSA bld., Chico State College. 60 Comment
  CAS-BOT-BC67813  Marsilea vestita Lowell Ahart 1981-8-31 3059 Butte Sierra Nevada - Wyandotte Lake, E of Oroville 450 Comment
  CHSC30714  Marsilea vestita M. S. Taylor 1980-7-6 3051 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  RSA724939  Marsilea vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley 23 Comment
  JEPS117721  Marsilea vestita subsp. vestita Lowell Ahart 2010-6-20 16821 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
  CHSC11385  Matricaria discoidea Lowell Ahart 1971-4-13 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC389  Matricaria discoidea B. Richardson 1929-4-16 Butte CSC Campus. 54 Comment
  RSA144587  Meconella californica W. R. Ernst 1958-3-27 215 Butte Slopes above Butte Creek Bridge on the Honeyrun road to Paradise (east of Chico) 152 Comment
  SEINET12089314  Meconella californica Unknown 1978-1 5 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug and Honey Run Rds, 6.4 mi ESE of 146 Comment
  SEINET12155168  Medicago hispida P. L. Ricker 1912-1 3965 Butte Chico Comment
  CHSC111369  Medicago lupulina Lowell 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. 79 Comment
  CHSC76418  Medicago lupulina Lowell Ahart 1999-10-28 8315 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS119755  Medicago lupulina Lowell 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
  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
  CHSC40606  Medicago polymorpha Ahart; Jokerst 1985-3-24 4858 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC44500  Medicago praecox Lowell Ahart 1988-5-8 5983 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut about 12 miles south-east of Oroville. 60 Comment
  JEPS94773  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 1/4 mi ne of Oroville (w of dirt road, 1/10 mi n of the Thermalito Diversion Dam, e of the Thermalito Diversion Pool) 67 Comment
  CHSC92670  Melica aristata L. P. Janeway 2005-6-26 8440 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CAS-BOT-BC269390  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia 731 Comment
  CHSC67412  Melica californica James D. Jokerst; R. A. Schlising 1985-4-8 2218 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC86530  Melica californica L. P. Janeway 2003-5-7 7777 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  UCD80578  Melica californica CNPS SN Foothill Team 2005-3-29 SNFN 0026 a Butte CDFG North Table Mountain Wildlife Area, near the eastern boundary of the Table Mt. Ecological Reserve. 356 Comment
  UCD86412  Melica californica Mrs. R. M. Austin 1896-5-1 52 Butte Little Chico Creek. Comment
  JEPS117931  Melica californica var. nevadensis L. P. Janeway 2008-4-2 9250 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  RSA585117  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Jonesville. 1524 Comment
  CHSC36067  Melica geyeri J. D. Jokerst; R. A. Schlising 1982-6-4 1586 Butte N of Concow Basin. 853 Comment
  CHSC39278  Melica harfordii Lowell Ahart 1983-7-29 4231 Butte Along the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  UC398888  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville Comment
  CDA42903  Melissa officinalis L. Ahart 2012-6-14 18195 Butte Dry high bank on the north side of Big Chico Creek, west of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  SEINET10498159  Mentha arvensis Mary Susan Taylor 1975-10-4 Taylor 957 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC31791  Mentha canadensis L. Ahart 1978-8-30 1802 Butte Peter Ahart Ranch, Honcut. Along edges of North Honcut Creek. 50 Comment
  CHSC78254  Mentha pulegium Lowell Ahart 2000-7-17 8593 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  JEPS102335  Mentha pulegium Lowell Ahart 2001-6-1 8746 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at margin of the Thermalito Afterbay, W of Larkin Rd, 1 1/4 mi S of Oroville Airport) 42 Comment
  JEPS95864  Mentha pulegium Lowell Ahart 1999-8-13 8164 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
  RSA716403  Mentha spicata var. spicata L. Ahart 2005-8-19 12334 Butte East side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 50 Comment
  UC203850  Mentzelia laevicaulis var. laevicaulis A. A. Heller 1914-8-13 11682 Butte 9 mi se Chico (Low volcanic hills, below the Quercus Douglasii belt.) Comment
  CHSC6643  Metasequoia glyptostroboides M. MacArthur 1968-4-16 354 Butte Ca. 40 ft. NE of Big Chico Creek, near Dining Hall, Chico State College campus. 60 Comment
  CHSC108793  Micranthes fallax Lowell Ahart 2012-4-9 17841 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  CHSC392  Micropus californicus var. californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC348462  Micropus californicus var. californicus Peter H. Raven 1953-5-9 5453 Butte 3.3 miles from Bangor on road to Oroville Comment
  UCD80103  Microseris acuminata CNPS SN Foothill Team 2005-4-15 SNFN 0081 b Butte City of Chico, Doe Mill Meadowfoam Preserve, ~50 m from the western boundary and ~70 m from the northern boundary. 85 Comment
  CAS-BOT-BC348702  Microseris acuminata John Thomas Howell 1976-4-2 51546 Butte About 2 miles southeast of Chico 60 Comment
  SEINET10496808  Microsteris gracilis Mary Susan Taylor 1981-3-16 Taylor 3412 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 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
  RSA715721  Microsteris gracilis subsp. gracilis L. P. Janeway 2005-3-1 8337 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10570404  Mimulus Mary Susan Taylor 1979-8-4 Taylor 2177 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  RSA535780  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge. Griffith residence, 4.4 mi NE of Keefer Road along cohasset Hsy, then 0.4-0.6 mi s along private dirt road; 396 Comment
  JEPS119873  Mimulus aurantiacus var. grandiflorus Lowell Ahart 2012-6-2 18128 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  POM173673  Mimulus breweri H. F. Copeland 1928-8-17 958 Butte Jonesville. Comment
  SEINET12319568  Mimulus cardinalis J. P. Kroessig 1977-1 21 Butte along E bank of West Branch Feather River, ca 13 km WNW of Paradise 488 Comment
  UCD89439  Mimulus filicifolius Jason Sexton 2010-5-22 3 Butte East of Oroville, Big Bald Rock area. 932 Comment
  RSA0087957  Mimulus glaucescens Christopher T. Ivey 2013-5-9 379 Butte Platte Mountain.Above W branch of Butte Creek. About 1.5 km S of Hwy 32/Carpenter Ridge Rd. intersection along old logging road. 880 Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 Comment
  RSA795591  Mimulus glaucescens Christopher T. Ivey 2010-6-7 375 Butte Honey Run Road, 3.5 km northeast of bridge crossing Butte Creek, in roadside ditch. 165 Comment
  SEINET12318322  Mimulus glaucescens K. D. Johnson 1978-1 20 Butte along Cohasset Rd toward Cohasset, 9 road mi N of East Ave, intersection in Chico 366 Comment
  POM43708  Mimulus guttatus C. C. Bruce 1897-02 2105 Butte Little Chico. Comment
  RSA256661  Mimulus kelloggii Dave Knorr 1974-4-20 137 Butte On Oroville's Table Mtn, near Cherokee Rd. Comment
  JEPS108561  Mimulus mephiticus L. P. Janeway 2005-6-26 8439 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek 1305 Comment
  CDA41843  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte East roadside of Highway 32, ca. 1 mile northeast of road Forest Ranch. Comment
  CHSC31022  Mimulus moschatus M. S. Taylor 1980-10-6 3361 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  CHSC42965  Mimulus moschatus Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC64052  Mimulus moschatus S. C. Morey 1984-8-4 709 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  POM298033  Mimulus moschatus var. longiflorus A. A. Heller 1917-7-26 12829 Butte Butte Meadows. 1280 Comment
  POM193346  Mimulus primuloides var. pilosellus E. B. Copeland 1930-7-15 460 -A Butte Jonesville. 1500 Comment
  UCD122938  Mimulus torreyi P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  SDSU10802  Mimulus tricolor Scott McMillan 1992-4-11 11 IV92B Butte The pool was under a electrical tower north of Upper Park Road, in Upper Bidwell Park, Chico. 78 Comment
  RSA535804  Mimulus tricolor David M. Thompson, L. Ahart 1988-3-22 849 Butte N of Honcut. Peter Ahart Ranch (entrance 1.2 mi N of Honcut store along Ahart Road.) 1 mi E of ranch gate, then 0.5 mi N. 35 Comment
  SEINET11930245  Minuartia californica D. G. Bendix 1978-1 3 Butte 5 m NE Skyway bridge over Butte Creek, 4.5 km ESE Chico Comment
  CHSC93501  Minuartia cismontana Lowell Ahart 2006-5-8 12591 Butte About 200 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 347 Comment
  POM219016  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CAS-BOT-BC22742  Moenchia erecta Lowell Ahart 1980-5-4 2192 Butte East of Oak Grove Cemetary, ca 3/4 miles SE of Hurlton 600 Comment
  JEPS114588  Moenchia erecta subsp. erecta Lowell Ahart 2008-5-30 14800 Butte Mowed parking area at the cemetery, about 300 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 331 Comment
  CHSC83087  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS29837  Mollugo verticillata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8581 Butte road to Centerville (about 200 ft e of its inception at the Paradise Road Junction) 60 Comment
  UC204576  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte land 8 mi n of Oroville Comment
  UCD99635  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  RSA719715  Monardella odoratissima Michael A. Vincent, K. Levings 2006-7-29 12896 Butte NE of Chico along Rt. 32. Comment
  CHSC105819  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
  CHSC52037  Monardella odoratissima subsp. pallida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 279 Butte W edge of Scotts John Rd 1.7 mi n. of its jct with Humbug/ Humboldt Rd, in open flat overlooking Scotts John Ck. 1828 Comment
  UC525885  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  SD6870  Monardella odoratissima subsp. pallida unknown 1882-7-14 Butte Sutton House Comment
  CHSC39669  Monardella sheltonii Lowell Ahart 1983-6-21 4083 Butte Along Bloomer Hill Rd., about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC79520  Monardella sheltonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13975 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  POM61383  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC56572  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-1 2928 Butte Along meadowy creek draining the lake of southeastern-most headwaters of Butte Creek. In the creek and at dryish edges. 1935 Comment
  CHSC30861  Montia fontana subsp. chondrosperma J. D. Jokerst 1979-3-23 1156 Butte Top of North Table Mt., ca 100 m N of the jct of the E edge of mt and Cherokee rd. 396 Comment
  CHSC23717  Montia parvifolia M. S. Taylor 1976-5-5 1114 Butte Abundant along creek, ca. 5 ft s of Hwy 70, ca. 20 mi ne of Oroville. Comment
  SEINET10929036  Montia perfoliata Mary Susan Taylor 1975-3-10 Taylor 380 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
  CHSC109093  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17859 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  LA9645  Muhlenbergia filiformis E. B. Copeland; 1929-7-16 339 Butte Jonesville 1550.0 Comment
  RSA585114  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  CAS-BOT-BC392248  Myosurus John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  CHSC113377  Myriophyllum spicatum Lowell Ahart 2014-4-16 19372 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
  SD9591  Myriopteris gracillima E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  UC1586508  Najas gracillima Vernon H. Oswald and Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on south side of Highway 162, ca 3.5 miles north-northwest of Biggs. 30 Comment
  SEINET10940373  Nasturtium officinale Mary Susan Taylor 1975-10-31 Taylor 983 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  POM183145  Navarretia capillaris H. F. Copeland 1930-7-28 1308 Butte Neighborhood of Jonesville. 1829 Comment
  POM219095  Navarretia capillaris H. F. Copeland 1928-8-18 374 Butte Neighborhood of Jonesville; near Butte Creek. 1524 Comment
  CHSC28859  Navarretia divaricata J. D. Jokerst; T. B. Devine 1979-5-18 462 Butte Top of North Table Mt, ca 200 met N of jct of Cherokee Rd and E edge of Mt. Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  RSA716046  Navarretia filicaulis L. Ahart 2005-7-12 12135 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 624 Comment
  POM74736  Navarretia filicaulis C. C. Bruce 1898-05 2432 Butte [No locality information provided] Comment
  CHSC36715  Navarretia heterandra D. H. Ikeda 1981-5-11 359 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  CHSC101824  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15766 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  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
  UC879888  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC4163  Navarretia leucocephala R. Carter 1966-4-21 350 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side of Old Cherokee Rd., 6.55 mi. from Chico Rd., in vernal pool. 274 Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  CHSC103711  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  JEPS95867  Navarretia leucocephala subsp. leucocephala Lowell Ahart 1999-5-21 8072 Butte about 5 miles (air) southwest of Gridley; ; 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  RSA717291  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11818 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  SEINET14151956  Navarretia leucocephala subsp. leucocephala B. Ertter, J. Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  JEPS117332  Navarretia pubescens Lowell Ahart 2010-6-20 16834 Butte About 3/8 miles 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 55 Comment
  SEINET10869735  Navarretia squarrosa Mary Susan Taylor 1978-5-7 Taylor 1593 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC12530  Navarretia tagetina J. Pitts 1973-5-2 182 Butte Ca. one eighth mi e of Clark Road on Pentz Road, s side of road. Comment
  UC196279  Navarretia viscidula A. A. Heller 1914-5-22 11427 Butte about 5 mi n Chico (on the Richardson Springs road) Comment
  CHSC109101  Nemophila heterophylla Lowell Ahart 2012-3-23 17783 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC694  Nemophila heterophylla E. Hembree 1929-3-5 Butte Salmon Hole. 152 Comment
  RSA754791  Nemophila heterophylla L. Ahart 2009-4-26 15641 Butte South side of Guardians Trail, about 30 yards SW of Pine Trail, Upper Bidwell Park, about 3/8 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC196272  Nemophila heterophylla A. A. Heller 1914-5-8 11376 Butte plateau above Clear Creek (on the Paradise Road); above Clear Creek Comment
  CHSC10833  Nemophila maculata Lowell Ahart 1965-4-15 Butte Swede's Flat Road. 60 Comment
  CHSC113399  Nemophila spatulata Lowell Ahart 2014-7-4 19555 Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  CHSC61338  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte At Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  SEINET10535890  Nymphaea odorata Mary Susan Taylor 1977-10-10 Taylor 1517 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CHSC2491  Odontostomum hartwegii W. Fitzwater 1958-4-19 Butte Along Rock Cr., Chico area. 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
  CHSC93086  Olea europaea L. P. Janeway 2006-2-5 8555 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; between North Rim Trail and the northern boundary fence, 650 m northeast of the upper high-power lines, about 50 m southeast of the fenceline. 283 Comment
  CAS-BOT-BC71181  Ophioglossum californicum Lowell Ahart 1983-1-29 3901 Butte On the Joie Osgood Ranch, about 4 miles northeast of Honcut 85 Comment
  CAS-BOT-BC71182  Ophioglossum californicum Lowell Ahart 1984-2-18 4496 Butte On the Joie Osgood Ranch, about 4 miles northeast of Honcut 85 Comment
  CAS-BOT-BC349984  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  CHSC43190  Oreostemma alpigenum var. andersonii Robert Banchero 1981-7-19 595 Butte Butte Creek House, ca 3 air mi NE of Jonesville. 1755 Comment
  RSA0087776  Orobanche fasciculata Herbert F. Copeland 1931-6-10 1557 Butte Jonesville. Ridge between Willow and Colby Creeks. 1676 Comment
  CAS-BOT-BC500245  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-17 s.n. Butte 2.5 mi W of Bangor, 1/2 mi S of Avocado Ave. and S of teh Blue Lead Mine 100 Comment
  CDA42032  Orobanche uniflora subsp. occidentalis H. K. Wagnon 1957-4-28 712 Butte About five miles north of Oroville on road to Cherokee. 0 Comment
  CHSC61330  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte Small bog about 1/8 mile south-west of the Snow Mine, about 2-1/2 miles east of Bald Mountain, about 6-1/2 miles north-east of Stirling City. 1463 Comment
  CAS-BOT-BC457670  Orthilia secunda H. F. Copeland 1920-8-29 153 Butte Jonesville woods 1219 Comment
  SEINET10549690  Orthocarpus lacerus Mary Susan Taylor 1980-5-15 Taylor 2624 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  JEPS121894  Oxalis corniculata Lowell Ahart 2014-11-24 19920 Butte About 10 feet below the high water line of Lake Oroville, about 500 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  JEPS95963  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte Bidwell Sacramento River State Park; Sacramento River; Big Chico Creek; Chico 36 Comment
  CHSC84127  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area, about 3/5 of a mile west of Pacific Heights Road, about 5 1/2 miles (air) southwest of Oroville. 39 Comment
  CHSC27249  Oxalis rubra P. Moyer 1972-3-18 151 Butte CSUC campus. 2nd and Hazel, lawn. 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
  CAS-BOT-BC334337  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 Butte 100 yards S of the road to the Forbestown Res., S of the Forbestown Ditch, about 2.5 miles NE of Forbestown 883 Comment
  UC1042339  Packera eurycephala var. lewisrosei Lewis S. Rose 1954-5-31 54085 Butte near Pulga; Feather River Canyon 396 Comment
  UC1026483  Panicum acuminatum var. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 mi w Pulga; Sierra Nevada, w of Pulga 365 Comment
  SEINET10607444  Panicum bulbosum A. Arthur Heller 1916-9-30 Heller 12665 Butte Hills S miles north of Oroville in culivated ground where it occurs sparingly. Comment
  UCD89510  Panicum capillare L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CHSC97686  Panicum dichotomiflorum Lowell Ahart 2007-11-3 14562 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
  RSA724812  Panicum dichotomiflorum L. 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 the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CHSC78173  Parentucellia viscosa Lowell Ahart 2000-6-6 8456 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  UC830990  Parvisedum pumilum A. A. Heller 1914-4-27 11329 Butte along Chico-Oroville Road on the lava plains 6 mi from Chico; Chico-Oroville Road Comment
  RSA126975  Paspalum dilatatum H. S. Yates 1936-8-14 6128 Butte 2 miles S. S. W. of Nielson 30 Comment
  CHSC50021  Pectocarya penicillata Lowell Ahart 1990-3-28 6426 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
  JEPS116138  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC399518  Pellaea andromedifolia Mrs. R. M. Austin 1896-1 199 Butte Iron Canyon Comment
  SEINET10529790  Pellaea andromedifolia Mary Susan Taylor 1981-1-5 Taylor 3370 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC11794  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  RSA4626  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  UC1481794  Pellaea brachyptera H. M. Hall July 1914 9807 Butte near Jonesville (ridges n of) 1737 Comment
  UC474221  Pellaea brachyptera H. F. Copeland 1920-5-22 231 Butte Jonesville 2200 Comment
  CAS-BOT-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC28881  Pellaea mucronata M. S. Taylor 1980-2-24 2323 Butte On the east branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  SEINET10529806  Pellaea mucronata Mary Susan Taylor 1980-3-19 Taylor 2391 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  UC474209  Pellaea mucronata var. mucronata H. F. Copeland March, 1926 541 Butte near Chico (Iron Canyon) Comment
  CDA36308  Penstemon azureus J. R. Keck Jr. 1978-5-23 PDR# 330034 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  SEINET12320806  Penstemon azureus M. S. Taylor 1980-1 2776 Butte just E of Coutelence Rd at its jct with Skyway 610 Comment
  UC436310  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  UC600438  Penstemon deustus var. deustus H. F. Copeland 1931-6-11 Butte Butte Creek Canyon betw Scotchjohn and Willow Crks (Jonesville); Butte Creek Canyon btw Scotchjohn and Willow Crks, Jonesvill Comment
  CHSC91461  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 733 Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC44712  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 282 Butte Along County Rd 0.9 mi E of the town of Feather Falls. 975 Comment
  CHSC86545  Penstemon laetus var. leptosepalus L. P. Janeway; John Hunt 2003-6-13 7826 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 140 m northwest of the north end of Enterprise Bridge. 287 Comment
  UC454141  Penstemon laetus var. leptosepalus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  NY604517  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25693 Butte Route 24, along Feather River, above Pulga 457.2 Comment
  CHSC49033  Penstemon neotericus Vernon Oswald; Lowell Ahart 1987-7-1 3052 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek. 1828 Comment
  NY627277  Penstemon neotericus D. D. Keck 1930-7-24 970 Butte 7 miles above Chaparral (near Humbug Summit) 1706.9 Comment
  UC423641  Penstemon neotericus David D. Keck 1930-7-24 971 Butte near Chaparral; Sierra Nevada, near Chaparral 1645 Comment
  CHSC69055  Penstemon newberryi var. newberryi Lowell Ahart 1997-8-1 7792 Butte On a mountain side, east of Little Kimshew Creek, east of Snow Meadow, about 1/4 mile east of Table Mountain , about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC39815  Pentagramma triangularis Ruby Gist 1935-3-30 Butte Fern Banks. Comment
  CHSC28417  Pentagramma triangularis subsp. semipallida Bruce Hamren 1978-4-24 8 Butte West Branch of Feather River. 280 Comment
  CHSC34242  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-7 3629 A Butte N side of Ponderosa Way, 0.6 mi n of Ponderosa Dam, ca. 4 air mi sw of Feather Falls. 365 Comment
  CAS-BOT-BC77084  Pentagramma triangularis subsp. triangularis Saichi Kawahara 1968-5-4 378 Butte Paradise - James Ripley's property, Graham Road 640 Comment
  CHSC113466  Perideridia lemmonii Lowell Ahart 2014-7-13 19667 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
  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
  JEPS117536  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
  CHSC37073  Persicaria lapathifolia L. Ahart 1982-10-6 3844 Butte Peter Ahart Ranch. Along edges of North Honcut Creek, ca. 1 mi n and e mi e of Honcut. 50 Comment
  CHSC42054  Persicaria lapathifolia Lowell Ahart 1986-11-9 5452 Butte On the bottom of a pond, about 1/10 mile sout of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CAS-BOT-BC419181  Persicaria maculosa Forman T. McLean 1921-10-1 37 Butte Nelson Comment
  CHSC94786  Persicaria punctata Lowell Ahart 2006-10-8 13428 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  SJSU5411  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Honeyrun Rd between Chico & Paradise 487 Comment
  CHSC103733  Phacelia cicutaria var. cicutaria Lowell Ahart 2010-5-16 16698 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 608 Comment
  UC726927  Phacelia cicutaria var. cicutaria A. A. Heller 1942-4-26 16435 Butte steep slope...overlooking a deep gorge where the road begins to descend toward Oroville after leaving the...summit of Table Mountain Comment
  CDA13303  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1996-7-9 13151 Butte Plumas National Forest; along USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC38464  Phacelia imbricata Vernon Oswald 1983-5-23 533 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 195 Comment
  UC600780  Phacelia mutabilis H. F. Copeland 1920-7-12 477 Butte Jonesville Comment
  SEINET10497019  Phacelia procera Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4207 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC30065  Phacelia purpusii R. A. Schlising; R. Banchero 1980-6-17 3730 Butte N of Magalia and De Sabla, along Skyway ca 1.5 mi SW of Lovelock. 780 Comment
  CHSC39123  Phacelia purpusii R. Schlising 1980-6-2 3619 a Butte NE of Forest Ranch along Hwy 32. Comment
  RSA21534  Phacelia purpusii Carl B. Wolf 1937-5-17 8720 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  CHSC38467  Phacelia tanacetifolia Vernon Oswald 1983-3-14 181 .5 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC117300  Phalaris arundinacea B. Castro; Melinda Carlson 2007-10-25 1677 Butte (Arroyo Chico land grant area). Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W. of River Road and north of the creek with surrounding disturbed riparian forest. 39 Comment
  JEPS94792  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte about 7 air mi n Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CAS-BOT-BC259048  Phalaris lemmonii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UCD88990  Phalaris lemmonii H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  UCD89175  Phalaris minor A. A. Heller 1926-5-8 13939 Butte Heller grounds near Chico. Comment
  CAS-BOT-BC250707  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CAS-BOT-BC250867  Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 1150 Comment
  CHSC59053  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC35095  Phlox speciosa subsp. occidentalis R. A. Schlising 1980-6-23 3760 Butte Southeast part of county, 3.4 miles N and W of Forbestown. 890 Comment
  POM299255  Phlox speciosa subsp. occidentalis C. R. Quick 1941-6-8 41 -14 Butte Big Bar Mt. Meadow Comment
  CAS-BOT-BC134915  Phoradendron bolleanum John Thomas Howell 1955-6-14 30443 Butte Magalia. Sierra Nevada 731 Comment
  CAS-BOT-BC134920  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  CHSC77448  Phoradendron densum Laura Bogni 1997-3-25 3 Butte Magalia grove; west side of Coutelenc Rd; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  UCD102163  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  CHSC23137  Phoradendron libocedri M. S. Taylor 1976-2-22 997 Butte Ca. w mi n of Cohasset, ca. 10 ft e of Cohasset Rd. Comment
  CHSC45303  Phoradendron libocedri Vernon Oswald 1987-10-17 3243 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. 1341 Comment
  CAS-BOT-BC141247  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 304 Comment
  RSA262354  Phoradendron villosum Kathy Corson 1969-4-6 28 Butte Upper Park Road in Big Chico Canyon, 8 miles NE of Chico. 61 Comment
  CHSC33216  Phyla nodiflora var. rosea R. E. Preston 1981-6-19 97 Butte On bank of canal, ca. 0.8 km s of Headquarters, Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. 20 Comment
  CHSC31212  Physalis acutifolia M. S. Taylor 1980-7-6 3060 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
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Aug 7 2007
  CDA5814  Physalis philadelphica L. L. Heinrichs 1968-10-1 Butte Forebay Recreational Area, Highway 70 at Garden Drive, Oroville. 0 Comment
  POM90682  Physocarpus capitatus C. C. Bruce 1898-05 1812 Butte Butte Creek. Comment
  HSC97070  Phytolacca americana L. Ahart 2004-9-28 11405 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  CHSC28693  Pinus ponderosa M. S. Taylor 1978-9-9 1914 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  HSC46096  Pinus ponderosa J. P. Smith 1973-3-22 5931 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC54457  Piperia transversa Vernon H. Oswald; Lowell Ahart 1991-7-15 4732 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  CHSC61525  Piperia transversa Lowell Ahart 1993-6-16 6961 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air Miles south-west of Forbestown. 609 Comment
  UC600638  Piperia unalascensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1500 Comment
  CAS-BOT-BC254406  Piptatherum miliaceum Lowell Ahart 1988-5-30 6016 Butte Near the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  UCD108190  Pisum sativum Robert Kehlor 1951-5-6 42 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  SEINET10899921  Pityrogramma triangularis Mary Susan Taylor 1981-4-5 Taylor 3483 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10834154  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-9-28 Taylor 2201 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 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
  CHSC28142  Plagiobothrys austiniae Robert A. Schlising 1979-4-30 3383 Butte Ca 10 mi nw of Oroville, near jct Pentz and Clark roads. At roadside. 76 Comment
  UCR46079  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 152 Comment
  UCD169603  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 Butte Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  SBBG128020  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte ca. 1/4 mi S of the parking area, N Table Mtn, ca. 4.5 mi NE of Oroville 371 Comment
  CHSC26802  Plagiobothrys fulvus var. campestris M. S. Taylor; M. Hayes 1978-4-14 1568 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  CHSC23598  Plagiobothrys hispidulus K. R. Stern 1974-6-30 5768 Butte Coutelenc Road, 0.2 mi n of intersection with Skyway and ca. 1 mi n of Magalia. Comment
  CHSC114965  Plagiobothrys nothofulvus 2015-3-14 Butte 371 Comment
  UC78200  Plagiobothrys stipitatus R. M. Austin Apr 1896 626 Butte Adobe Swales Butte Creek Comment
  CHSC112903  Plagiobothrys stipitatus var. micranthus B. Castro; Robin Carter 2011-4-29 1879 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC31579  Plagiobothrys stipitatus var. micranthus L. Ahart 1974-4-14 405 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43551  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1977-3-29 1234 Butte In the borrow area about 5 miles south-west of Oroville. 30 Comment
  CHSC84252  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-5-28 10229 Butte Center of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  UCD73012  Plagiobothrys stipitatus var. stipitatus Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  RSA32724  Plagiobothrys tenellus A. A. Heller 1916-4-13 12318 Butte Stilson Canyon east of Chico Comment
  CAS-BOT-BC60825  Planodes virginica Lowell Ahart 1989-3-20 6192 Butte West of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles S of Oroville 30 Comment
  SEINET10499838  Plantago bigelovii Lowell Ahart 1983-4-10 Ahart 3919 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
  CHSC42071  Plantago coronopus Jumilah Zakaria 1986-4-15 20 Butte S Hwy 99, ca. 2 mi from jct with Cana Creek Road. 182 Comment
  SEINET6990023  Plantago coronopus W. P. Vestal, A. G. Vestal 1963-5-9 s.n. Butte About 11 miles southeast of Chico, at lower west-facing slope of lava mesas, close to hills. Comment
  JEPS104005  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 348 Comment
  UC195481  Plantago erecta A. A. Heller 1914-3-21 11221 Butte 8 mi n Oroville Comment
  UCSB50205  Plantago erecta Gray, John 1976-4-10 Butte Along roadside; 4 miles south of Oroville on Highway 70; T19N R3E Sec. 25, SE quarter 30 Comment
  CHSC116959  Plantago lanceolata Matthew Forster 2013-5-14 Butte Oroville spillway, off Oro Powerhouse Rd. 118 Comment
  SEINET10499809  Plantago lanceolata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4064 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC66442  Plantago major Vernon H. Oswald; Lowell Ahart 1996-6-10 7744 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  UCD124510  Plantago major L. E. Hazeltine 1916-6-5 s.n. Butte Chico. Comment
  SEINET10476447  Platanus occidentalis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5376 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CAS-BOT-BC93159  Platanus racemosa Lowell Ahart 1984-4-3 4535 Butte Peter Ahart Ranch. Found growing on gravel bars along North Honcut Creek. About 1 mile north and 2.75 miles east Honcut. 50 Comment
  CHSC1991  Plectritis ciliosa M. Davidson 1929-3-23 Butte Chico Canyon bluffs. 152 Comment
  SEINET10464979  Plectritis ciliosa Mary Susan Taylor 1975-3-10 Taylor 415 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
  SEINET10840002  Plectritis ciliosa Mary Susan Taylor 1981-4-5 Taylor 3491 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
  UC105888  Pleuricospora fimbriolata Mrs. R. M. Austin July 1896 361 Butte Colby Comment
  CAS-BOT-BC458153  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 5148 Butte 4 miles E of Cherry Hill, south of Willow Creek, about 100 meters SW of the Section Corner of Sections 17, 16, 20, and 21, about 4 miles E of Cherry Hill, about 7 miles NE of Butte Meadows 1828 Comment
  CHSC88148  Poa bolanderi Lowell Ahart 2004-7-23 11305 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  JEPS110196  Poa bolanderi Lowell Ahart 2006-7-16 12972 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
  SEINET10934988  Poa bulbosa Mary Susan Taylor 1982-5-2 Taylor 4386 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
  CHSC76332  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. Near creek. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 750 Comment
  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
  SEINET10659386  Poa scabrella Lowell Ahart 1990-4-28 Ahart 6471 Butte South side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville.Growing on dry soil on steep banks. Foothill Woodland. 40 Comment
  CHSC103981  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16670 Butte Open rocky flats near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 363 Comment
  CHSC6747  Poa secunda subsp. secunda Marilyn Lee 1968-4-19 144 Butte Field on W. side of Cherokee Rd., Table Mt. Comment
  CHSC85416  Poa secunda subsp. secunda John Dittes 1992-5-5 466 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  HSC12182  Poa secunda subsp. secunda P. Van? 1918-4-29 2059 Butte Butte Creek about 4 mi. SE of Chico. Comment
  CHSC39500  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte Along the trail to the over-look to Feather Falls, about 2 1/2 miles north of the town of Feather Falls. 600 Comment
  SEINET10508318  Poa tenerrima Lowell Ahart 1983-4-10 Ahart 3930 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  POM70306  Pogogyne douglasii Edward Palmer 1892-6-7 2078 Butte Near Chico. Comment
  SEINET10498986  Pogogyne douglasii Mary Susan Taylor 1975-4-29 Taylor 538 A Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  UC196327  Pogogyne zizyphoroides A. A. Heller 1914-4-11 11275 Butte 8 miles north Oroville Comment
  RSA0022185  Pogogyne zizyphoroides C. C. Bruce 1897-05 1834 Butte [No location information on label.] Comment
  SEINET13947033 Image available Pogogyne zizyphoroides Kitsy Kelly 1974-1 17 Butte Oroville Quadrangle, 300 yds S of the intersection of Pentz and Clark Rds; 200 ft alt., T21N, R3E, SEC27 61 Comment
  UCD125428  Pogogyne zizyphoroides W. R. Powell 1968-4-23 1468 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC62348  Polycarpon tetraphyllum B. Castro 1990-5-6 426 Butte In residential area at south end of Chico. 60 Comment
  CDA30229  Polygala cornuta L. Ahart 2009-5-3 15776 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CAS-BOT-BC6544  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  UC1594572  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  CHSC46193  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1911 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  CDA22759  Polygonum bidwelliae Sterling O. Mattoon 1971-5-25 Butte Canyon overlook, Skyway, near Paradise. 0 Comment
  CHSC97344  Polygonum bidwelliae Paul Maslin 2005-5-1 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  RSA3842  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise Comment
  CAS-BOT-BC109151  Polygonum bolanderi Lowell Ahart 1980-9-10 2616 Butte Little Bald Rock. 1100 Comment
  UC466038  Polygonum californicum Mrs. R. M. Austin Apr. 1896 174 Butte plains Comment
  CHSC11918  Polygonum douglasii subsp. douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  JEPS95934  Polygonum lapathifolium Lowell Ahart 1999-8-13 8174 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
  SEINET13711408  Polygonum lapathifolium Lowell William Ahart, Lowell William Ahart 1999-1 8174 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC100914  Polygonum minimum R. A. Schlising; Lawrence Janeway 1988-7-22 4624 Butte North of Philbrook Lake, near Plumas County line. 1935 Comment
  CHSC39132  Polygonum minimum R. A. Schlising 1981-8-4 4183 Butte N part of county; narrow meadow along Willow Creek at crossing of Humboldt Road. 1844 Comment
  SD1173  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, on shaded gravel bars by Butte Creek 1500 Comment
  CAS-BOT-BC419809  Polygonum parryi Lowell Ahart 1980-7-4 2457 Butte Near Hurleton. 600 Comment
  CHSC29371  Polygonum parryi R. A. Schlising; S. Azevedo 1980-6-13 3701 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Rd). 902 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
  SEINET10479662  Polygonum parryi Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4730 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UC1509633  Polygonum persicaria L. Ahart 1982-10-6 3845 Butte ca 3 mi ne Hocut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  SEINET10904456  Polygonum punctatum Mary Susan Taylor 1977-8-16 Taylor 1450 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CDA13261  Polygonum spergulariiforme G. F. Hrusa, T. D. Wilfred 1996-7-8 13105 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  SEINET10479686  Polygonum spergulariiforme Mary Susan Taylor 1980-9-19 Taylor 3338 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  SEINET10470877  Polypodium californicum Lowell Ahart 1983-3-28 Ahart 3911 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  CHSC28414  Polypodium calirhiza M. S. Taylor 1979-9-28 2181 Butte Butte county line at Hwy 70, between boundry and Arch Rock tunnel. 487 Comment
  CHSC33692  Polypodium calirhiza L. Ahart 1981-3-29 2716 Butte Along or near Ponderosa Way, ca. 1/4 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC96823  Polypodium calirhiza Lowell Ahart 2007-5-29 13935 Butte On the east side of Bald Rock Dome, Dome Trail at the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CHSC79432  Polypodium glycyrrhiza G. F. Hrusa; T. D. Wilfred 1997-5-1 13706 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 790 Comment
  CHSC71217  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS114970  Polypogon australis Lowell Ahart 2008-5-21 14778 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  JEPS94825  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC45745  Polypogon maritimus S. A. Conley 1986-6-23 42 Butte Upper Bidwell Park, Chico. In drainage of Gun Club lake, ca. 150 ft. s. of lake. Comment
  JEPS127227  Polypogon maritimus Lowell Ahart 2016-5-30 20886 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC207679  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte near Butte creek between Durham and Nelson Comment
  CAS-BOT-BC232572  Polypogon monspeliensis Lowell Ahart 1977-6-2 1524 Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC115371  Polypogon monspeliensis Lowell Ahart 2015-4-24 20059 Butte Small size plants, on dry bare soil, side (road edges) of a large duck field. 19 Comment
  CHSC34678  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A 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
  JEPS106115  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  UC600570  Polystichum imbricans subsp. imbricans E. B. Copeland 1931-6-10 Butte ridge w of North Willow Creek Jonesville 1650 Comment
  SEINET6409502  Polystichum munitum J. Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks 610 Comment
  SEINET9625612 Image available Polystichum munitum E. B. Copeland 1931-6-10 s.n. Butte Ridge west of Willow Creek. Vicinity of Jonesville, Lassen National Forest. 503 Comment
  CHSC44609  Polystichum scopulinum Vernon Oswald; Lowell Ahart 1987-8-5 3190 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  SEINET10460761  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland 397 Butte Above Jonesville 1750 Comment
  UCD138255  Potamogeton nodosus H. L. Mason; Verne Grant 1945-7-10 12640 Butte Stanford Slough, Butte Sink, southwest corner of county. Comment
  SD2231  Potentilla andersonii E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  SEINET7073611  Potentilla glandulosa A. G. Vestal 1955-5-21 s.n. Butte About 13 miles east of Oroville on the Black Bart Road. UTM Zone 10, 642818mE, 4373333mN. Coordinate datum: NAD27. Comment
  CHSC45584  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2035 Butte Butte Cr between Forks of Butte and the bridge (Doe Mill Rd). 609 Comment
  CHSC75531  Potentilla glandulosa subsp. glandulosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada. Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 710 Comment
  SEINET10483125  Potentilla glandulosa subsp. nevadensis Mary Susan Taylor 1978-7-21 Taylor 1830 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  POM275136  Potentilla gracilis var. fastigiata Lyman D. Benson 1932-7-28 3971 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  JEPS122064  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. Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  CHSC52063  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 148 Butte 0.95 mi into Coon Hollow below Campground, by edge of Coon Creek and on edge of adjacent meadow. 1664 Comment
  CHSC82331  Prunus S. Posner 1972-9-23 Butte Garden behind 725 Nord Ave., Chico. Comment
  CHSC38930  Prunus cerasifera Vernon Oswald 1983-2-23 93 Butte Upper Bidwell Park, Chico, at the Salmon Hole Parking Area (1.4 mi e of the power lines). Along an intermittent stream. 158 Comment
  CHSC70838  Prunus cerasifera Vernon Oswald 1998-4-12 8902 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. 441 Comment
  CAS-BOT-BC159926  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  CHSC23647  Prunus emarginata M. S. Taylor 1976-4-4 1063 Butte On n side of Ponderosa Way, ca. 3 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  POM219500  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville 1524 Comment
  CAS-BOT-BC151219  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon east of Chico Comment
  CHSC76829  Pseudognaphalium luteoalbum L. P. Janeway 1999-11-15 6627 Butte Northern Sierra Nevada foothills. Along drainages below high water line of Lake Oroville, below Nelson Bar Road about 0.6 mi north-northwest of Lime Saddle. Ravines below forest. 274 Comment
  CAS-BOT-BC357002  Pseudognaphalium luteoalbum Lowell Ahart 1979-12-29 2024 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC43273  Pseudognaphalium thermale Lowell Ahart 1987-8-30 5866 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC65445  Pseudognaphalium thermale Vernon Oswald 1987-7-29 3156 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CAS-BOT-BC361853  Psilocarphus oregonus E. B. Copeland 1931-7-20 s.n. Butte Jonesville. Near Butte Creek House 1700 Comment
  SEINET10904902  Psilocarphus tenellus Lowell Ahart 1983-8-16 Ahart 4304 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC60962  Psilocarphus tenellus var. tenellus Lowell Ahart 1993-7-6 7049 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC72550  Pteridium aquilinum T. P. Spira 1974-4-28 7 Butte along Contolene Rd, ca. 2 mi e of Paradise 609 Comment
  POM220019  Pterospora andromedea H. F. Copeland 1928-8-17 488 Butte Jonesville. 1524 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
  JEPS98312  Pyrola aphylla Lowell Ahart 2000-7-11 8573 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls 1219 Comment
  JEPS108798  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset 1130 Comment
  SEINET10973482  Pyrola picta Lowell Ahart 1985-6-17 Ahart 5052 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  SEINET10874403  Pyrola picta subsp. integra Mary Susan Taylor 1980-8-2 Taylor 3215 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  UCD47663  Quercus M. Wiesendanger 1928-6-1 1337 Butte Introduction Station, Chico. Comment
  CAS-BOT-BC94693  Quercus X howellii John Thomas Howell 1955-6-15 30498 Butte 6 miles from Paradise on road to Pentz 426 Comment
  SBBG126082  Quercus X morehus L. Ahart 2012-3-23 17799 Butte S side of Old Humboldt Rd cut, N end of Disc Golf Area, ca 50 yards W of Hwy 32, ca 5 mi NE of Chico 395 Comment
  UCD162814  Quercus berberidifolia D. O. Burge 2015-3-16 1686 Butte Butte Creek watershed, below Doe Mill Ridge. 243 Comment
  CAS-BOT-BC62689  Quercus chrysolepis A. A. Heller 1918-5-5 13016 Butte Honey Run grade on a north slope Comment
  RSA719539  Quercus chrysolepis Michael A. Vincent, K. Levings 2006-7-29 12887 Butte NE of Chico along Rte 32. Comment
  CDA13880  Quercus chrysolepis var. chrysolepis G. F. Hrusa, T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada; Near summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. and Comment
  CHSC78081  Quercus douglasii April Glover 1997-4-4 30 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32 with intermittent stream Mediterranean climate. 390 Comment
  SACT002656  Quercus dumosa Herbert Copeland 1939-7-8 Butte Humboldt Road 12 miles east of Chico. Shrub 2m tall tall very abundant as component of chaparral. Comment
  UCD46184  Quercus garryana H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico, Butte County. Comment
  UC1135634  Quercus garryana var. breweri C. G. Albertus 1933-7-1 39 Butte sw slope Promontory Pk.; Chico Quad. 1005 Comment
  CHSC102405  Quercus kelloggii Lowell Ahart 2009-6-19 15952 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC39783  Quercus kelloggii Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  JEPS113214  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
  RSA12710  Quercus lobata Carl B. Wolf, E. R. Johnson 1934-10-5 6162 Butte 3 miles out of Chico. 61 Comment
  UCD47411  Quercus vacciniifolia A. E. Wieslander; J. E. Sowder 1933-6-24 91 Butte 1/4 mile east of Inskepion Fish Creek. 1432 Comment
  UCD47414  Quercus vacciniifolia Leonard H. Day 1948-7-11 s.n. Butte Lava Top, in Butte County, ca. 1 mile south of Cascade (Plumas County), California. 1435 Comment
  JEPS115105  Quercus wislizeni var. wislizeni Lowell Ahart, John Dittes 2008-11-14 15451 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  CAS-BOT-BC186693  Ranunculus John Thomas Howell 1976-4-2 51548 Butte About 2 miles southeast of Chico 60 Comment
  CAS-BOT-BC379413  Ranunculus alismifolius var. alismellus H. F. Copeland 1920-7-11 67 Butte Scotch John Meadows 1829 Comment
  CHSC9109  Ranunculus aquatilis var. hispidulus J. Goodwin 1970-4-28 60 Butte 1.7 mi. on Upper Park Road, Bidwell Park, Chico. Southeast corner of Horse Shoe Pond. Comment
  CHSC4663  Ranunculus arvensis R. Carter 1966-4-11 345 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds. W off Feathervale, 15 yds. W off Feathervale, 15 yds. W of house; in orchard. 243 Comment
  HSC40652  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte 1.0 mi. E of Hwy. 99 61 Comment
  CHSC38158  Ranunculus hebecarpus Vernon Oswald 1983-3-14 182 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 350 Comment
  CHSC101166  Ranunculus muricatus Lowell Ahart 2009-5-15 15698 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. 267 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  UCD80703  Ranunculus muricatus CNPS SN Foothill Team 2005-3-23 SNFN 0064 Butte CDPR, Oroville State Recreation Area, along the North Fork Trail, on the Potter's Point Loop Trail, north of the intersection with Potter's Ravine Trail. 372 Comment
  CHSC79557  Ranunculus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1997-5-1 13718 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. 775 Comment
  UC204960  Ranunculus orthorhynchus var. orthorhynchus A. A. Heller 1914-6-22 11491 Butte Chico Meadows Sierra Nevada 1219 Comment
  SFV10378  Raphanus raphanistrum M. L. Vincent 1965-4-16 634 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  CAS-BOT-BC74263  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  CDA35702  Rhamnus californica subsp. californica L. Ahart 2002-9-9 9937 Butte 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown Comment
  SEINET10493587  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-4-8 Taylor 3505 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 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
  UC204566  Rhamnus rubra A. A. Heller 1914-5-17 11404 Butte between 14 Mile House and Forest Ranch; Sierra Nevada 731 Comment
  CHSC82376  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, southwest of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  CHSC86433  Rhamnus tomentella subsp. tomentella Jenny Marr 1994-6-13 88 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  RSA30407  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-16 s.n. Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  UC1121072  Rhododendron occidentale C. G. Albertus 1933-7-5 41 Butte 2 mi se of Promontory Point 1066 Comment
  POM87358  Rhus trilobata var. pilosissima C. C. Bruce 1897-05 1819 Butte Little Chico Comment
  CHSC45135  Rhynchospora californica Vernon Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Salmon Hole near Parking Area O. 182 Comment
  CHSC45181  Rhynchospora capitellata Lowell Ahart 1980-7-20 2481 Butte In a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  UC217234  Ribes H. M. Hall 1917-5-11 10294 Butte Keefer Mill Keefer Ridge 731 Comment
  CHSC96232  Ribes amarum R. Fischer 2006-4-25 998 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing the southern end of reserve on the north facing, densely brushy hillside in one of the seasonal stream drainages/ravines. 304 Comment
  CAS-BOT-BC93277  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow. 1800 Comment
  SBBG83400  Ribes nevadense D. Neubacher 1976-5-25 23 Butte Rag Dump Rd, 14 mi SE of Stirling City 1280 Comment
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Jan 13 2018
  SEINET3118954 Image available Ribes nevadense E. B. Copeland 1931-1 647 Butte Jonesville, woods near Butte Creek 1550 Comment
  CAS-BOT-BC198958  Ribes roezlii var. roezlii M. S. Taylor 1982-5-23 4513 Butte S side of Hwy 70, vicinity of Arch Rock Tunnel ca. 0.5 mi SW of Butte-Plumas county line. 487 Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CHSC3496  Robinia pseudoacacia Roger Jaegel 1966-4-14 123 Butte Located four miles west of Forest Ranch. Comment
  CAS-BOT-BC74463  Rorippa curvisiliqua Lowell Ahart 1986-11-9 5451 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles SW of Oroville. 36 Comment
  CAS-BOT-BC74471  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  CAS-BOT-BC74472  Rorippa curvisiliqua Clarence R. Quick 1963-7-16 63 54 d Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  RSA431531  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  CHSC77982  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2000-5-13 8350 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SEINET10448490  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 Ahart 5040 Butte Lake Oroville, about 1/2 mile south-west of the Enter- prise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. Comment
  UC600715  Rorippa nasturtium-aquaticum H. F. Copeland 1920-5-23 221 Butte Jonesville Comment
  CHSC75990  Rorippa palustris var. hispida Lowell Ahart; Vernon H. Oswald 1999-8-13 8182 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95951  Rorippa palustris var. hispida Lowell Ahart 1999-8-13 8182 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
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Feb 25 2009
  CHSC110994  Rosa Lowell Ahart 2012-6-9 18181 Butte On the south side of the pond, east of the South Rim Trail, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  POM140209  Rosa californica A. A. Heller, H. E. Brown 1902-5-14 5546 Butte Berry Canyon (near Clear Creek) Comment
  CHSC82390  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, and 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Along the road. 548 Comment
  RSA0005392  Rosa pisocarpa subsp. ahartii Barbara Ertter 2007-6-23 19074 Butte Black Bart Road. 1.3 miles from lower junction with Forbestown Road ca. 10 air miles ESE of Oroville. 655 Comment
  UC1926781 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC38545  Rotala ramosior Vernon Oswald 1983-7-8 836 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  CHSC43233  Rotala ramosior Lowell Ahart 1987-9-4 5879 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 mile seast of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC96949  Rotala ramosior Lowell Ahart 2007-7-8 14276 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS122261  Rotala ramosior Lowell Ahart 2014-9-23 19866 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC84739  Rubus glaucifolius L. P. Janeway; Christine Hantelman 2003-6-19 7850 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 280 Comment
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 Comment
  CHSC46046  Rubus parviflorus L. P. Janeway 1987-5-10 2051 Butte At edge of bridge over West Branch Feather River ca 6 mi from Stirling City. 754 Comment
  CAS-BOT-BC433198  Rubus pensilvanicus Peter H. Raven 1953-5-9 5449 Butte 6.5 miles from Bangor on road to Oroville Comment
  SEINET10483604  Rubus procerus Mary Susan Taylor 1980-6-7 Taylor 2792 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  UC1586477  Rudbeckia occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4739 Butte 5.75 mi (air) ne of, just upstream from the bridge Brush Creek; Forest Rd 23N60, Jordan Creek-Marble Creek Rd, Oroville-Quin 1051 Comment
  UC600493  Rumex acetosella H. F. Copeland 1929-6-10 Butte Jonesville Comment
  SEINET10937567  Rumex crispus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4124 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
  JEPS94633  Rumex obtusifolius Lowell Ahart 1998-7-1 8034 Butte about 7 air mi n Oroville (e of cow chute and on e side of Cherokee Rd.); North Table Mountain 403 Comment
  CHSC116700  Rumex pulcher Lowell Ahart 2016-5-14 20828 Butte Bottom of a small wash, open pasture field, 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 11 miles (air) southeast of Oroville. 38 Comment
  CDA23201  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 6 .343 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC45579  Sagina apetala Lowell Ahart 1980-5-4 2215 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  JEPS122282  Sagina apetala Lowell Ahart 2014-4-15 19354 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  POM101502  Sagina apetala C. C. Bruce 1897-06 1888 Butte Little Chico. Comment
  CHSC113340  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 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
  CHSC50030  Sagina decumbens subsp. occidentalis Lowell Ahart 1990-4-15 6459 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC112722  Sagina saginoides Lowell Ahart 2013-10-26 19211 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CAS-BOT-BC445799  Sagittaria montevidensis Lowell Ahart 1987-10-20 5918 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 36 Comment
  UC935721  Sagittaria sanfordii Herbert L. Mason and Verne Grant 1946-8-8 13001 Butte Butte Sink; West Gridley road one mi w of Gridley - Pennington highway Comment
  UC2026859  Salix babylonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC107964  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  CHSC37778  Salix gooddingii M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  HSC102781  Salix gooddingii L. Ahart 2012-4-20 17893 Butte About 9 air miles NE of Chico, ~0.6 mi. west of Hwy. 32; ~100 yds. south of the intersection of South Rim Trail and Ten Mile House Road, ~50 yds. SW of table at old homestead; on east side of dam, east of South Rim Trail. 259 Comment
  RSA28803  Salix laevigata A. A. Heller 1914-3-21 11222 Butte 8 miles N of Oroville below the Quercus douglasii belt. Comment
  CDA38767  Salix lasiolepis L. Ahart 2012-4-2 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC21249  Salix lasiolepis M. S. Taylor 1975-10-31 978 Butte Ca. 500 yds n of Pentz Rd, in Butte College Campus, ca. 12 mi s of Chico. 91 Comment
  CHSC37770  Salix lasiolepis M. S. Taylor 1979-3-19 1934 Butte 1.5 mi e of Pulga bridge over Feather River, along Hwy 70, near Bear Ranch Creek, ca. 25 air mi n of Oroville. 487 Comment
  JEPS119530  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS119610  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  SEINET10538856  Salix lasiolepis Mary Susan Taylor 1979-3-19 Taylor 1934 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CAS-BOT-BC129624  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36779 Butte Jarbo Gap, Feather River Highway - Sierra Nevada 60 Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  RSA31117  Salix lucida subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico meadows. 1220 Comment
  CAS-BOT-BC129487  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek Comment
  CAS-BOT-BC129490  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  UC463019  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  UCD111862  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  CHSC43264  Samolus parviflorus Lowell Ahart 1987-9-4 5884 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC1975  Sanicula bipinnata A. Goekler 1929-3-20 Butte Chico. 57 Comment
  SEINET11155784  Sanicula bipinnatifida E. Murin 1967-4-15 s.n. Butte Along Pennington Road SW of Gridley. Comment
  CHSC93458  Sanicula bipinnatifida var. flava Lowell Ahart 2006-5-8 12601 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  CHSC36539  Sanicula tracyi L. Ahart 1982-6-4 3548 Butte On a lava cap, 1.5 mi e of Camp 18 and ca 8 mi e of Feather Falls. 1000 Comment
  CHSC32126  Saponaria officinalis L. Ahart 1974-10-22 668 Butte By rd near Sly Creek Dam, near Pinkard Creek which is near Sly Creek Reservoir. 762 Comment
  CHSC1416  Sarcodes sanguinea 1954-5-30 Butte Rag Dump, near Stirling. 1066 Comment
  CAS-BOT-BC436854  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA755046  Scandix pecten-veneris L. Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  SEINET10472665  Schoenolirion album Mary Susan Taylor 1977-8-17 Taylor 1465 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  SEINET10472666  Schoenolirion album Mary Susan Taylor 1977-6-25 Taylor 1391 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC111369  Schoenoplectus acutus var. occidentalis John Thomas Howell 1959-9-20 34651 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  CHSC45118  Schoenoplectus mucronatus Vernon Oswald 1987-7-20 3138 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
  CHSC57152  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of Skyway, 2.9 mi east of the Butte Creek bridge. 170 Comment
  SEINET9318790  Schoenoplectus mucronatus Unknown 1996-9-5 13563 Butte Butte Comment
  CAS-BOT-BC5833  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  SEINET10938716  Scirpus microcarpus Lowell Ahart 1985-6-30 Ahart 5076 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC29398  Scleranthus annuus subsp. annuus R. A. Schlising; R. Banchero 1980-6-17 3740 Butte N of Magalia at old Coutelenc Site, along Coutelenc Road, 1.7 mi S of jct with Skyway at Lovelock; roadside. Comment
  CAS-BOT-BC239958  Scribneria bolanderi Lowell Ahart 1983-5-12 3976 Butte About 0.5 mi. NE of Highway 99 and Pentz Road 65 Comment
  UC1609011  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte about 1 air mi nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  UCD125705  Scutellaria californica L. Ahart 1982-5-28 3439 Butte on north slope near North Honcut Creek, near Peter Ahart Ranch, around 3 miles northeast of Honcut. 50 Comment
  CHSC57224  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Rd. on the north side of Thermalito Diversion Pool about one-quarter mile east of the old bridge site. 76 Comment
  CHSC87422  Scutellaria tuberosa R. D. Fischer 2004-3-15 112 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at northern end Guardian Trail, along trail. 411 Comment
  CHSC457  Sedella pumila R. Carter 1964-3-23 63 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 250 yds. E of rd. along rim of table. 60 Comment
  CAS-BOT-BC415017  Sedella pumila Mrs. C. C. Bruce 1897-3-1 1776 Butte Foothiils Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  CHSC38407  Sedum spathulifolium Vernon Oswald 1983-4-1 250 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 600 ft w of the power lines. 134 Comment
  CAS-BOT-BC63854  Sedum spathulifolium Junea Kelley 1970-4-24 s.n. Butte Los Vergils Comment
  SEINET12215663  Sedum spathulifolium Unknown 1977-1 20 Butte ca 20 M S of Big Chico Creek, 6 km ne of Chico. Richardson Springs Quadrangle. 7.5' N. central 100 Comment
  UCD135979  Selaginella hansenii L. Ahart 1974-1-6 294 Butte Peter Ahart Ranch, Honcut; along North Honcut Creek. 45 Comment
  CHSC96138  Selaginella wallacei Lowell Ahart 2007-2-24 13584 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  CHSC8148  Senecio aronicoides D. McClain 1969-3-20 84 Butte 1/2 mi. e. of Hooker Oak along the Chico Creek, Upper Bidwell Park, Chico. 64 Comment
  CHSC88645  Senecio eurycephalus var. lewisrosei Linnea Hanson 1986-5-8 276 Butte Plumas National Forest. Pulga Bridge. 548 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CHSC101142  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  JEPS119617  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte In Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CHSC2813  Senecio vulgaris David Prall 1965-3-14 11 Butte Ca 1 yd. south of Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC31587  Senecio vulgaris L. Ahart 1977-9-24 1586 Butte Near the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC418  Senecio vulgaris J. Turner 1930-4-3 Butte Chico. 57 Comment
  CHSC96618  Senecio vulgaris Lowell Ahart 2007-3-7 13588 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  SEINET11805155  Senecio vulgaris Unknown 1969-1 81 Butte 100 yds N of Salmon Hole, Upper Bidwell Park, Chico 70 Comment
  SFV11435  Senecio vulgaris M. L. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Road. Comment
  CAS-BOT-BC364729  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  CDA4260  Sesbania punicea L. Ahart 2000-8-23 8660 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC6147  Setaria gracilis E. Parreno 1968-5-1 81 Butte Front lawn of house on nw corner of Ivy and W 2nd Sts., Chico. 59 Comment
  CHSC78228  Setaria parviflora Lowell Ahart 2000-5-17 8365 Butte Near the south margin of the Thermalito Afterbay, north of the poor dirt road, about 1/10 mile north of the Richville Highway, about 1/2 mle east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  JEPS124335  Setaria parviflora Lowell Ahart 2015-10-16 20558 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC51294  Setaria pumila Lowell Ahart 1990-10-21 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. 213 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
  CHSC31626  Setaria sphacelata L. Ahart 1977-9-8 1568 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31809  Sherardia arvensis L. Ahart 1970-4-4 37 Butte Peter Ahart Ranch, Honcut. 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
  CHSC84868  Sidalcea asprella L. P. Janeway 2003-5-24 7797 Butte Northern Sierra Nevada Foothills. Along OroDam Blvd. 585 m southwest of the base of Oroville Dam. 137 Comment
  SEINET7073626  Sidalcea asprella A. G. Vestal 1955-5-21 s.n. Butte About 5.8 miles east of Oroville on the Olive Highway. UTM Zone 10, 631906mE, 4373738mN. Coordinate datum: NAD27. Comment
  HSC46141  Sidalcea calycosa subsp. calycosa J. P. Smith, J. O. Sawyer 1973-4-14 6053 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC112929  Sidalcea diploscypha B. Castro 2012-5-9 1918 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.34 mi N of jcn of Hwy 99/Hwy 162W and ca 0.45 mi. S of screened CDFG fishery facility 39 Comment
  CHSC52446  Sidalcea hartwegii Denise Monceau 1984-4-11 12 Butte Ca 5 mi from hwy 99; jct of Honey Run and Humbug Roads. SE side of road. 106 Comment
  CHSC59328  Sidalcea hartwegii J. L. Guardino 1992-4-18 14 Butte Grassy area 20 ft s of ephemeral stream. Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  RSA754584  Sidalcea hartwegii L. Ahart 2009-4-22 15583 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  POM84689  Sidalcea hartwegii C. C. Bruce 1898-05 2389 Butte No location given Comment
  CDA36507  Sidalcea hirsuta Butte County Ag. Comm. 1961-5-1 Butte Near Nelson. 0 Comment
  RSA88031  Sidalcea robusta C. L. Hitchcock 1952-5-28 19535 Butte Along Paradise-Durham Road about 5 miles south of Paradise Comment
  CHSC50664  Silene antirrhina Lowell Ahart 1990-5-25 6478 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  JEPS98430  Silene antirrhina Lowell Ahart 2000-5-31 8425 Butte 3 mi SE of Paradise (below the high water line of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 271 Comment
  UC120218  Silene bernardina unknown 1892-6-29 Butte Jonesville Comment
  UC600626  Silene douglasii H. F. Copeland 1932-7-24 Butte Jonesville Butte Creek drainage, Jonesville (near the rim w wall of Butte Creek drainage) Comment
  UCD98658  Silene gallica A. A. Heller 1914-4-24 11319 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC387068  Silene gallica Lowell Ahart 1988-5-1 5974 Butte North Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CDA33638  Silene gallica R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  CHSC35041  Silene lemmonii R. A. Schlising; M. S. Taylor 1980-7-5 3837 Butte N part of county, at first crossing of Butte Creek on Humboldt Road N of Butte Meadows. On bank near creek. 1341 Comment
  UC600620  Silene occidentalis subsp. longistipitata H. F. Copeland 1924-8-11 880 Butte Jonesville Comment
  CHSC38388  Silybum marianum Vernon Oswald 1983-4-18 329 Butte Upper Bidwell Park, Chico, on the north slope w of Horseshoe Lake. Beside an old jeep trail. 109 Comment
  CHSC3911  Silybum marianum J. Wheeler 1967-5-20 31 Butte In vacant lot immediately w of 248 Servis St. Durham. Comment
  CHSC21250  Sinapis arvensis M. S. Taylor 1975-3-25 424 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. Comment
  CHSC81473  Sinapis arvensis Julie Rose 2000-2-21 4 Butte East Biggs, North end of Mead Avenue. On the east side of the road. 28 Comment
  CAS-BOT-BC135400  Sisyrinchium Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  RSA718077  Sisyrinchium bellum Lowell A. Ahart 2006-7-16 12998 Butte on the northwest edge of Willow Creek, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northwest of Butte Meadows 1516 Comment
  UC844610  Smilacina racemosa A. A. Heller 1915-6-11 11968 Butte Chico Meadows Sierra Nevada 1219 Comment
  SEINET10469849  Smilax californica Mary Susan Taylor 1975-6-25 Taylor 805 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
  CDA18814  Solanum elaeagnifolium K. Ewing 1999-8-31 PDR 1174282 Butte Corner of Centennial and Manzanita Ave., Chico. 0 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
  CHSC44900  Solidago velutina subsp. californica Lowell Ahart 1988-7-24 6130 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  SEINET10474960  Soliva pterosperma Mary Susan Taylor 1980-4-6 Taylor 2440 A Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  JEPS122118  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CHSC107249  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  SEINET10483617  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3706 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  CDA3449  Spergula arvensis subsp. arvensis L. Ahart 2003-6-23 10307 Butte Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. Comment
  CHSC93365  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 424 Comment
  CHSC98959  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-12 14735 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC33704  Spergularia marina L. Ahart 1981-4-6 2743 Butte On Gray Lodge Waterfowl Mgmt Area, w of the HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC112244  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC41891  Spergularia rubra Lowell Ahart 1986-8-15 5389 Butte 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
  SEINET10454595  Sphenosciadium capitellatum Mary Susan Taylor 1978-7-18 Taylor 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC42793  Spiraea densiflora subsp. densiflora L. P. Janeway 1987-6-27 2331 Butte Along Little Kimshew Cr just N of Ramsey Bar. Site of old Ramsey Bar mining and timber center. 1341 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC1610  Spiraea douglasii R. M. Staley 1952-7-13 Butte Butte Creek. Comment
  CHSC45809  Spiraea douglasii L. P. Janeway; R. A. Schlising 1988-7-22 3045 B Butte Near the saddle between Coon Hollow and Chips Cr. 1889 Comment
  JEPS121975  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte About 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC88186  Spiranthes romanzoffiana Lowell Ahart 2004-8-2 11325 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
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Sep 6 2011
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  CHSC44403  Stachys ajugoides var. rigida Lowell Ahart 1988-6-23 6063 Butte North of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC65426  Stachys ajugoides var. rigida Vernon Oswald 1983-7-19 875 Butte Doon Campground, ca. 1 mi e of Lovelock on the Skyway n-e of Paradise. 822 Comment
  CHSC65573  Stachys ajugoides var. rigida R. Banchero 1980-7-28 314 Butte Upper margins of Chico Meadows. Ca 1 mi N of jcn of Humboldt Rd and the Skyway, ca 6 mi NE of jcn Humboldt Rd and Hwy 32. 1322 Comment
  UC884252  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  UCLA70947  Stachys ajugoides var. rigida A. A. Heller 1928-7-15 14684 Butte Butte Meadows Comment
  SEINET12326804  Stachys palustris subsp. pilosa Unknown 1983-1 4288 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  CHSC41908  Stachys pycnantha Lowell Ahart 1983-7-29 4233 Butte Along the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles northeast of Oroville. 500 Comment
  CHSC52077  Stachys stricta B. Castro 1987-7-24 187 Butte Between curve in Table Mtn Blvd and the W. Pacific RR line. 103 Comment
  UC179507  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi north of Oroville. Comment
  RSA0041906  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 s.n. Butte Jonesville. Comment
  CHSC10641  Stellaria media Lowell Ahart 1968-3-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96550  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC46826  Stellaria obtusa R. A. Schlising; L. P. Janeway 1988-7-16 4602 Butte N part of county, NE of Butte Meadows and E of Scott John Creek; near Willow Creek. 1554 Comment
  CAS-BOT-BC405342  Stellaria pallida A. A. Heller 1914-3-29 111242 Butte Chico, Sacramento Valley Comment
  CHSC58905  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte In a meadow, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC1564733  Stellaria umbellata V. Oswald and L. Ahart 1989-7-21 3876 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 Comment
  RSA4138  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  CAS-BOT-BC375765  Stephanomeria virgata John Thomas Howell 1961-9-22 36741 Butte Bottom of Feather River, Oroville 53 Comment
  SEINET10603897  Stipa lettermanii K. Bridwell 1978-2-28 Bridwell 48 Butte Along Oakway Rd., 5 mi. ENE of Magalia, E of Feather River. Foothill Woodland. 762 Comment
  HSC103816  Streptanthus L. Ahart 2006-7-11 12939 Butte About 50 yds. S of Humboldt Road, ~1.5 air mi. SW of Butte Meadows 1436 Comment
  JEPS94722  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 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
  JEPS98478  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte 3 mi SE of Paradise (below high water line of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 271 Comment
  CHSC33225  Streptanthus longisiliquus R. E. Preston 1981-6-11 83 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  CHSC93961  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  SEINET10448517  Streptanthus polygaloides Lowell Ahart 1985-5-15 Ahart 4975 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CHSC36691  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  CHSC25540  Streptanthus tortuosus var. suffrutescens Robert A. Schlising 1974-4-29 3123 Butte Lava outcrops of Table Mountain several miles north of Oroville, off Cherokee Road. 365 Comment
  CHSC62799  Streptopus amplexifolius var. americanus B. Castro 1993-8-26 500 Butte Ca. 0.25 mi SW of Four Trees, off USFS Rd 23N15 ca. 0.6 mi S of its jcn with Four Trees Rd (USFS Rd 23N28). 1463 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
  LA44530  Styrax redivivus A. A. Heller; 1915-5-25 11891 Butte Sierra Nevada, ridge above Enterprise 609 Comment
  UC426974  Symphoricarpos mollis var. acutus E. B. Copeland 1930-7-7 479 Butte Jonesville 1600 Comment
  CHSC43136  Symphyotrichum ascendens Robert Banchero 1981-8-4 643 Butte Ca 1.7 mi N jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  CHSC31584  Symphyotrichum chilense Lowell Ahart 1977-9-20 1572 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC99044  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  UC600726  Symphyotrichum foliaceum H. F. Copeland 1932-8-16 Butte Butte Creek (woods by) Jonesville 1500 Comment
  CAS-BOT-BC98090  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  JEPS118055  Symphyotrichum spathulatum Lowell Ahart 2011-8-23 17650 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 1133 Comment
  UC726092  Symphyotrichum spathulatum A. A. Heller 1928-7-25 14697 Butte Jonesville and Butte Creek House Comment
  JEPS108934  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2006-9-9 13245 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
  CAS-BOT-BC98326  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1981-9-10 3150 Butte Gray Lodge, SW of Gridley. 35 Comment
  CHSC38325  Symphyotrichum subulatum var. parviflorum Vernon H. Oswald 1983-9-24 1044 Butte Upper Bidwell Park, Chico, on the north edge of Upper Park Rd. at Diversion Dam. 128 Comment
  CHSC85441  Symphyotrichum subulatum var. parviflorum R. D. Fischer; Jenny Marr 2003-10-25 12 Butte Chico. Located in northeast corner of town on the west side of Ceanothus Ave, cross street Brenni. Along drainage channel. 70 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
  CHSC97013  Tanacetum parthenium L. P. Janeway 2007-6-19 9066 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 2.1 road km south of Ponderosa Dam; 1.2 air km south-southwest of Ponderosa Dam and South Fork Feather River. 396 Comment
  CHSC32618  Tauschia kelloggii M. S. Taylor; L. Hanson 1981-3-31 3453 Butte Landing site on ridge. N side of spur rd, ca. 1/2 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 18 air mi n of Oroville. 822 Comment
  CHSC34796  Tauschia kelloggii M. S. Taylor 1981-5-15 3754 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CHSC60949  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte South-west of the intersection of Black bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  CHSC60950  Tauschia kelloggii Lowell Ahart 1993-6-26 7029 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC40323  Thalictrum fendleri var. polycarpum Ahart; Jokerst 1985-5-10 4954 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CAS-BOT-BC88227  Thysanocarpus curvipes Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham. Comment
  CHSC11376  Thysanocarpus curvipes Lowell Ahart 1971-4-5 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC2817  Thysanocarpus curvipes David Prall 1965-3-14 12 Butte Next to Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC108804  Thysanocarpus curvipes var. elegans Lowell Ahart 2012-4-9 17840 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  JEPS108848  Thysanocarpus curvipes var. elegans Lowell Ahart 2006-5-8 12608 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
  CAS-BOT-BC67299  Thysanocarpus radians A. A. Heller 1928-3-12 14481 Butte Near the Hooker Oak east of Chico. Comment
  HSC95810  Thysanocarpus radians L. Ahart 2003-3-24 10023 Butte 50 yds. N of the access road to the boat ramp at the Thermalito Afterbay, 200 yds. W of Larkin Rd., 1.25 mi. S of Oroville Airport, 5 mi. SW of Oroville 49 Comment
  SEINET11991667  Thysanocarpus radians Unknown 1984-1 6 Butte Oroville, on NW side of CA 70, 0.1-0.2 mi NE of its jct with Palermo Rd 61 Comment
  UC398900  Tofieldia occidentalis subsp. occidentalis E. B. Copeland 1929-7-24 349 Butte Jonesville 1550 Comment
  UC1532343  Torilis arvensis Vernon Oswald Jun 5 1985-Jun 23 1985 1809 Butte River Rd. 0.7 mi. s.w. of its junction w/ Chico River Rd. 36 Comment
  SFV10340  Torilis arvensis M. L. Vincent 1963-6-6 376 Butte Nelson Bar Road, 1 mile east of Pentz Road. 300 Comment
  JEPS115610  Torilis arvensis subsp. purpurea Lowell Ahart 2009-5-23 15725 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  RSA769599  Torilis arvensis subsp. purpurea L. Ahart 2009-5-8 15653 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS127070  Torilis nodosa Lowell Ahart 2016-5-30 20895 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC19923  Torreya californica 1975-2-23 389 Butte Abundant ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  SEINET10471671  Torreya californica Lowell Ahart 1987-5-9 Ahart 5585 Butte Along Pulga Road, about 0.25 m W of Bardees Bar along the North Fork of the Feather River, about 2.5 miles south-west of Pulga. Yellow Pine Forest. Uncommon, on dry broken serpentine along a wash. Comment
  CHSC34175  Torreyochloa pallida var. pauciflora L. Ahart 1981-9-15 3172 Butte Bottom of a swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  UCD80436  Toxicoscordion fremontii CNPS SN Foothill Team 2005-4-14 SNFN 0032 a Butte Private Rock Ranch pasture, about 120 m south of the ranch house and about 15 m east of the ephemeral creek running through the property. 95 Comment
  CHSC101134  Toxicoscordion venenosum var. venenosum Lowell Ahart 2009-5-15 15713 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  JEPS119804  Tribulus terrestris Lowell Ahart 2012-5-17 18069 Butte 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
  CHSC97718  Trichostema lanceolatum Lowell Ahart 2007-10-31 14517 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
  JEPS63137  Trichostema lanceolatum H. A. Dutton 1921-1 Butte Hooker Oak, Chico Comment
  CHSC61321  Trichostema oblongum Lowell Ahart 1993-7-29 7115 Butte Near a seep, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles (air) northeast of Stirling City. 1584 Comment
  CHSC30717  Trientalis latifolia M. S. Taylor 1980-5-27 2655 Butte On trail from parking lot to Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC111357  Trifolium Lowell Ahart 2012-5-4 17992 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  RSA197054  Trifolium albopurpureum H. F. Copeland 1929-5-4 884 Butte Near Chico. Comment
  CHSC92555  Trifolium albopurpureum var. albopurpureum L. P. Janeway 2005-4-25 8364 Butte Northern High Sierra Nevada. Plumas National Forest; near top of north end of Rocky Ridge; uppermost slope of northeastern tributary to Concow Reservoir; about 40 m south of Rim Road (Ponderosa Way). 951 Comment
  CHSC109655  Trifolium bifidum var. bifidum Lowell Ahart 2012-5-12 18042 Butte On the sides of Guardian Trail, about 300 yards north of Humboldt Trail, about 1/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8 miles (air) northeast of Chico. 361 Comment
  CHSC30644  Trifolium bifidum var. bifidum M. S. Taylor 1980-4-16 2498 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp, just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  UCD107603  Trifolium breweri Robert E. Preston 1982-7-21 346 Butte East end of Philbrook Reservoir. 1706 Comment
  CHSC41238  Trifolium campestre J. D. Jokerst 1985-5-11 2323 Butte Ravine north of Lake Oroville, south of Box Hall Flat ca. 1/2 mile, ca 1 mile east of Potter Ravine. Comment
  CHSC98981  Trifolium ciliolatum Lowell Ahart 2008-5-12 14744 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  SEINET8349805  Trifolium ciliolatum A. Heller 1926-4-21 13924 Butte 7 miles N of Chico. Comment
  UCSC008268  Trifolium cyathiferum Lowell Ahart 2006-7-19 13052 Butte About 40 yards of the abandoned logging road, about 250 yards north of where the dirt road crosses Colby Creek, about 2 miles (air) southeast of Colby Mountain, about 5 1/8 miles (air) northeast of Butte Meadows. 1540 Comment
  UCD108339  Trifolium depauperatum Michael A. Vincent; Ethan H. Freid, Don Banks 1998-4-5 8105 Butte Table Mountain. Comment
  SEINET7042703  Trifolium depauperatum A. G. Vestal 1963-5-9 s.n. Butte North of Oroville in the Sacramento River Valley and borders of the hill country. Oroville quadrangle UTM Zone 10, 619643mE, 4380357mN. Comment
  CDA38826  Trifolium depauperatum var. depauperatum L. Ahart 2012-4-3 17935 Butte On the west side of Guardian Trial, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC971  Trifolium depauperatum var. depauperatum P. Delaplane 1965-3-23 80 Butte H. Wulitzer Ranch: ca. 13 mi NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC110103  Trifolium dubium L. P. Janeway 2012-5-29 10829 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  CHSC111350  Trifolium dubium Lowell Ahart 2012-5-2 17970 Butte On damp dark clay soil, 50 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  CHSC96562  Trifolium dubium L. P. Janeway 2006-4-30 8565 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  JEPS98421  Trifolium dubium Lowell Ahart 2000-5-13 8342 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  UC1586474  Trifolium hybridum Vernon H. Oswald and Lowell Ahart 1991-7-15 4735 Butte 2.1 mi e junction (Forest Rd (Jordan Creek-Marble Creek Rd) and Oroville-Quincy Hwy, ca 5.75 air mi ne of Brush Creek) 1082 Comment
  CHSC90656  Trifolium jokerstii Samatha Mackey Hillaire; Charles Hooks 2005-4-9 1214 Butte North Table Mountain Plateau. About 100 ft SW of AL Chaffin Reservoir. 290 Comment
  SD2473  Trifolium kingii E. B. Copeland 1931-8-1 653 Butte Jonesville 1700 Comment
  CHSC113434  Trifolium longipes subsp. hansenii Lowell Ahart 2014-7-7 19571 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  JEPS103294  Trifolium microcephalum Lowell Ahart 2002-5-7 9623 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
  UCD111436  Trifolium microcephalum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N. of Gridley. Comment
  CHSC103962  Trifolium oliganthum Lowell Ahart 2010-5-7 16626 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 238 Comment
  CHSC101806  Trifolium repens Lowell Ahart 2009-6-12 15848 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC38530  Trifolium subterraneum Vernon Oswald 1983-4-6 293 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. 195 Comment
  CHSC96786  Trifolium subterraneum Lowell Ahart 2007-4-30 13701 Butte On the east side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  SEINET10452552  Trifolium tridentatum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4126 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
  LA205205  Trifolium variegatum A. A. Heller; 1913-4-6 10710 Butte near Big Chico creek, E of Chico Comment
  SEINET7067150  Trifolium variegatum A. G. Vestal 1947-4-30 s.n. Butte Lava field on Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 624251mE, 4380083mN. Comment
  CHSC21044  Trifolium variegatum var. variegatum M. S. Taylor 1975-4-26 518 Butte On e side of Kinkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC111358  Trifolium willdenovii Lowell Ahart 2012-5-4 17993 Butte On damp dark soil, near a drainage,about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC90941  Trifolium willdenovii Lowell Ahart 2005-4-18 11735 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
  JEPS119793  Trifolium willdenovii Lowell Ahart 2012-5-4 17993 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM28362  Trifolium wormskioldii C. C. Bruce 1898-05 2428 Butte [No location information provided.] Comment
  CHSC69161  Trillium albidum Lowell Ahart 1997-8-1 7764 Butte On the west side of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain. 1524 Comment
  SEINET3450900  Triodanis perfoliata Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10219 Butte Chico, Chico, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, about 150 yards west of Bear Hole, just north of Parking Area J, just above the Iahi Trail on the water ditch, just south of a mall drainage 120 Comment
  HSC32605  Triphysaria eriantha R. A. Vanbianchi 1974-4-20 243 Butte Table Mtn. 305 Comment
  JEPS4535  Triphysaria eriantha subsp. eriantha A. A. Heller 1938-3-27 15003 Butte near Chico Airport 91 Comment
  SD239927  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2012-4-14 18753 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82a^z) of Gridley. 91 Comment
  SEINET12350111  Triphysaria eriantha subsp. eriantha Unknown 1998-4-11 5 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  UCR237323  Triphysaria eriantha subsp. eriantha George K. Helmkamp, E. A. Helmkamp 2012-4-14 18741 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  HSC43121  Triphysaria eriantha subsp. eriantha Maralyn O'Meara 1974-4-20 274 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC61378  Trisetum canescens Lowell Ahart 1993-7-29 7127 Butte Bottom of a wash, about 100 yards south-west of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1524 Comment
  JEPS117642  Trisetum canescens Lowell Ahart 2010-9-28 17256 Butte In the shade of Sierra Lodgepole Pine, about 5 yards west of Big Kimshew Creek, meadow edge, about 100 yards east of a 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
  CHSC2068  Triteleia bridgesii N. Maxwell 1929-5-9 Butte Rock Creek, Shasta Road. 56 Comment
  POM169640  Triteleia hyacinthina Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC521612  Triteleia hyacinthina R. F. Hoover 1938-4-24 3245 Butte 3 mi n. of Chico Comment
  CHSC47080  Triteleia ixioides subsp. anilina R. A. Schlising; L. P. Janeway 1988-7-1 4559 Butte NE part of county, at jct of Humbug Road and dirt road to E (above Snag Lake and Butte Creek House). 1859 Comment
  SEINET10534137  Triteleia ixioides subsp. anilina Edwin B. Copel 1929-7-15 Copeland 351 Butte Jonesville, California In flat, bare openings in pine woods. Comment
  RSA378065  Triteleia ixioides subsp. scabra M. M. Boney s.n. Butte [No locality information provided] Comment
  SEINET10472682  Triteleia ixioides subsp. scabra Mary Susan Taylor 1980-5-27 Taylor 2728 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  UC727124  Triteleia ixioides subsp. scabra A. A. Heller 1938-4-23 15047 Butte between the Las Plumas road and Jarboe Pass (on the Feather River Highway) 609 Comment
  CAS-BOT-BC525792  Triteleia ixioides subsp. unifolia A. A. Heller 1938-4-14 15032 a Butte Table Mountain, Upper Sonoran Life Zone 304 Comment
  CHSC56827  Triteleia laxa S. Scott 1981-4-24 Butte 1.4 km e of Manzanita Ave and Centenial Ave intersection on Centenial Ave; ca. 3 km e of Chico. 97 Comment
  SJSU15291  Triteleia laxa Lisa Morton 2002-3-31 21 Butte Upper Bidwell Park, Base Middle Trail just off parking lot. 50 Comment
  SEINET10533910  Triteleia lilacina A. Arthur Heller 1938-4-11 Heller 15023 Butte Slope north of the golf links east of Chico in thin, red clay soil derived from disintegrated lava. Upper Sonoran Life Zone, elev. about 300 feet. 91 Comment
  CAS-BOT-BC200543  Tuctoria greenei Beecher Crampton 1960-6-15 5621 Butte 11 miles southeast of Chico, along US Hwy. 99E Comment
  CHSC12938  Tuctoria greenei K. R. Stern 1974-6-30 5767 Butte Vernal pool, ca. 100 yards e of Hwy 99E and 0.4 mi se of intersection with Pentz Road. Ca. 10 mi se of Chico. Comment
  UCD33120  Tuctoria greenei Beecher Crampton 1966-6-26 7766 Butte 10 miles SE of central Chico, 0.4 mile S of US Hwy. 99E and Pentz Road juction. Comment
  CAS-BOT-BC73911  Turritis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville. 1550 Comment
  CHSC77058  Umbellularia californica L. P. Janeway 2000-1-29 6631 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. 518 Comment
  CAS-BOT-BC381812  Uropappus lindleyi Lewis S. Rose 1963-6-2 63070 Butte 2 mi south of Pulga, North Fork of Feather River 579 Comment
  CAS-BOT-BC381822  Uropappus lindleyi Lowell Ahart 1985-4-29 4883 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville 60 Comment
  JEPS119843  Uropappus lindleyi Lowell Ahart 2012-3-23 17782 Butte About 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC1562419  Uropappus lindleyi Lowell Ahart 1990-6-16 6508 Butte on the s side Forbestown Reservoir (just s of the Forbestown Generator) 487 Comment
  HSC104022  Urtica dioica subsp. holosericea L. Ahart 2012-9-28 18464 Butte Chico, Lower Bidwell Park; ~ 200 yds. E of the east end of Sycamore Pool in Big Chico Creek, ~30 yds. N of Big Chico Creek 64 Comment
  JEPS120889  Utricularia gibba Lowell Ahart 2013-7-6 18825 Butte Peter Ahart Ranch, about 1.75 miles N and 1.5 miles E of Honcut, about 12 air miles SE of Oroville. Comment
  CHSC46560  Vaccinium membranaceum V. Oswald; L. Ahart 1989-7-12 3857 Butte Slightly w of the Skyway, 1.4 mi s of Inskip. 1426 Comment
  CHSC89909  Vaccinium membranaceum W. A. Sears; N. L. Jurjavcic 2004-7-30 Butte Northern High Sierra Nevada. Located on the southeastern arm of Sly Creek Reservoir, right at the high water mark. 1066 Comment
  CHSC33280  Vaccinium parvifolium R. A. Schlising 1980-6-14 3708 Butte NE of Oroville at Little Bald Rock. 1051 Comment
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Feb 8 2016
  CHSC115724  Vaccinium shastense subsp. shastense Len Lindstrand III 2013-6-5 Butte Bean Creek Road, approximately 0.5 mi north of Little Bald Rock, in an unnamed drainage tributary to Brush Creek. 1021 Comment
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Jan 25 2019
  CHSC42732  Velezia rigida Lowell Ahart 1987-5-6 5520 Butte Along the edge of the road at the Poe Power House on the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  HSC93415  Velezia rigida L. Ahart 1995-5-30 7582 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  SEINET10537543  Velezia rigida Mary Susan Taylor 1980-5-31 Taylor 2766 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
  SEINET12318327  Verbascum thapsus M. Sacks, Detzer 1977-1 24 Butte S side of Honey Run Rd., ca 1 km E of Covered Bridge. oroville Comment
  CHSC40372  Verbena lasiostachys var. scabrida Lowell Ahart 1985-5-6 4937 Butte On the bottom of Lindo Channel, about 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  UCR188575  Verbena litoralis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13068 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC28623  Veronica anagallis-aquatica M. S. Taylor 1979-10-2 2214 Butte In sand bar in Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  SEINET10548229  Veronica anagallis-aquatica Lowell Ahart 1985-5-6 Ahart 4935 Butte Bottom of Lindo Channel, about 1/10 mile east of Longfellow Ave., Chico. Comment
  CHSC115192  Veronica arvensis Lowell Ahart 2015-4-27 20084 Butte On the north side of the dirt road, about 5/8 mile northwest of the iron gate of the dirt road, along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CDA6492  Veronica arvensis Sterling O. Mattoon 1968-4-29 Butte 1st & Salem Streets, Chico. 0 Comment
  CDA6489  Veronica catenata L. Ahart 2006-9-28 13376 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. Comment
  JEPS102324  Veronica hederifolia Lowell Ahart 2001-4-21 8731 Butte 4 1/2 air miles NE of Gridley (N side of Palm Avenue, 30 yds E of the cement bridge, 1/4 mi E of Larkin Rd) 32 Comment
  CHSC103946  Veronica peregrina subsp. xalapensis Lowell Ahart 2010-5-22 16708 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC112194  Veronica peregrina subsp. xalapensis Lowell Ahart 2013-4-20 18560 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  UCD124762  Veronica peregrina subsp. xalapensis M. S. Taylor; J. D. Jokerst 1980-3-28 2399 Butte Valley Grassland, just east of Chico, northeast corner of junction of Notre Dam Blvd and the Skyway. 68 Comment
  SEINET10547692  Veronica peregrina var. xalapensis Mary Susan Taylor 1982-4-28 Taylor 4350 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC20096  Veronica persica M. S. Taylor 1975-4-6 436 Butte On se corner of Arcadian St and 3rd Ave, Chico. 60 Comment
  CHSC46291  Vicia americana var. americana Vernon Oswald 1989-5-11 3766 Butte Carpenter Ridge on the n side of Humboldt Rd, ca. 2 mi ne of Hwy 32 (Lomo), w of the 4533 ft benchmark. 1365 Comment
  CHSC50045  Vicia americana var. americana Lowell Ahart 1990-4-8 6444 Butte On the south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville. 33 Comment
  UC454083  Vicia americana var. americana Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC171798  Vicia benghalensis R. McKee 1907-1 18131 Butte Chico Comment
  CHSC44960  Vicia sativa subsp. nigra Lance E. Neuman 1987-4-10 12 Butte Ca. 100 yd n of Horseshoe Lake. 106 Comment
  JEPS117894  Vicia villosa subsp. varia L. P. Janeway 2008-3-18 9240 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road 126 Comment
  CHSC3866  Vinca major Gary Dutton 1966-3-16 123 Butte C.S.C. north side of Science Bld. along Chico Creek. Comment
  CAS-BOT-BC263896  Viola adunca H. F. Copeland 1920-5-20 s.n. Butte Jonesville 1219 Comment
  CHSC45730  Viola douglasii J. Marr 1988-3-18 19 Butte N side of Concow Rd 6 mi w of Hwy 70, 18 mi n of Oroville. 633 Comment
  UCR188702  Viola lobata 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
  CHSC2012  Viola lobata subsp. lobata M. Underhill 1952-7-2 Butte 304 Comment
  CHSC37140  Viola lobata subsp. lobata L. Ahart 1982-5-8 3415 Butte Ca. 1/2 mi sw of Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  CAS-BOT-BC530095  Viola lobata subsp. lobata Clarence R. Quick 1952-6-30 52 -106 Butte Big Bar Mountain, east of Pulga Comment
  UC478497  Viola macloskeyi E. B. Copeland 1931-5-9 661 Butte Jonesville 1500 Comment
  UCD111047  Viola macloskeyi H. F. Copeland 1929-6-20 s.n. Butte Jonesville. 1524 Comment
  SEINET11991673  Viola purpurea Unknown 1976-1 11 Butte 2 mi E of jct Ponderosa Way and Hwy 32, 22 mi Ne of Chico 427 Comment
  JEPS114179  Viola purpurea subsp. purpurea L. P. Janeway 2007-5-6 8972 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  CAS-BOT-BC203024  Vitis californica John Thomas Howell 1961-9-22 36751 Butte Feather River Highway 3 miles from Oroville Comment
  CHSC101747  Vitis californica Lowell Ahart 2009-5-23 15745 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC54382  Vulpia microstachys var. ciliata M. Bailey 1991-4-5 561 Butte Butte College Campus. Ca 100 feet w of the Recycling Center on Butte Campus Drive. 85 Comment
  UCD18877  Vulpia microstachys var. ciliata Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 185 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  CHSC31745  Vulpia microstachys var. pauciflora L. Ahart 1972-5-8 100 Butte Bottom of a wash, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42444  Vulpia microstachys var. pauciflora Lowell Ahart 1987-5-6 5562 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC38868  Vulpia myuros Vernon Oswald 1983-2-14 78 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 400 ft w of Salmon Hole. 146 Comment
  CAS-BOT-BC184704  Vulpia myuros subsp. megalura A. A. Heller 1914-4-6 11269 Butte Hills 8 miles north of Oroville Comment
  CHSC38124  Vulpia myuros var. hirsuta R. L. Ondricek-Fallscheer 1982-3-22 131 Butte Along Hwy 149, ca. 1 mi e of jct. of Hwy 99 and Hwy 149; ca. 11 mi se of Chico (Hwy 32). 60 Comment
  CHSC103015  Wolffia globosa Lowell Ahart 2009-10-8 16411 Butte In a deep large ditch, on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  RSA500141  Wolffiella oblonga Vernon H. Oswald 1989-10-18 4026 Butte West end of Liberty Road along the north boundary of Gray Lodge Wildlife Area Comment
  CHSC30998  Woodwardia fimbriata M. S. Taylor 1980-10-6 3354 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  CAS-BOT-BC382899  Wyethia angustifolia L. P. Janeway 1995-6-28 4822 Butte South side of Watson Ridge about 1.5 mi south of Pompys Point 1097 Comment
  CHSC38395  Wyethia angustifolia Vernon Oswald 1983-5-14 481 Butte Upper Bidwell Park, Chico, ca. 50 ft n of the trail on the north rim ca. 1.2 mi e of the power lines. 341 Comment
  CHSC40666  Wyethia bolanderi J. D. Jokerst; L. Ahart 1984-3-20 1949 Butte Adjacent to and n of Ponderosa Rd. (Bloomer Rd.) at a point 1.45 miles n of its junction with Hwy 162, 3 miles SW of Berry Creek. Comment
  UC478457  Wyethia mollis E. Copeland 1931-7-14 Butte Jonesville 1600 Comment
  UCD169663  Xanthium spinosum Lowell Ahart 2011-7-30 17619 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 33 Comment
  CAS-BOT-BC383674  Xanthium strumarium Lowell Ahart 1986-10-16 5408 Butte Below the high water line of Lake Oroville, about 1/10 mile east of the Enterprise Launch Area, about 1/4 mile south-west of Lumpkin Road, north-east of Oroville 274 Comment
  CHSC39952  Yabea microcarpa Lowell Ahart 1984-4-3 4539 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  UCD128191  Yabea microcarpa Lowell Ahart 1974-4-24 438 Butte along North Honcut Creek, Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SBBG128028  Zeltnera venusta L. Ahart 2010-6-9 16781 Butte bare open pasture field, ca. 50 yards S of the poor dirt rd, ca. 120 yards E of the fence, ca. 170 yards E of where you park, SE of Cherokee Rd, N Table Mtn, ca. 4 1/2 mi NE of Oroville 393 Comment
  CAS-BOT-BC530526  Zigadenus fremontii Lowell Ahart 1975-6-23 314 Butte Near Hornet 60 Comment
  CDA13886  Zigadenus paniculatus G. F. Hrusa, T. D. Wilfred 1997-5-8 13744 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC534279  Zigadenus venenosus A. A. Heller 1928-6-20 I 4669 Butte Butte Meadows Comment



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