Search Results — 2000 specimen records retrieved (1572 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26468  Abelia X grandiflora Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  SEINET10530557  Abies concolor Mary Susan Taylor 1979-3-31 Taylor 1964 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC109781  Abutilon theophrasti Lowell Ahart 2012-10-20 18485 Butte On the north side of the sidewalk, about 50 yards west of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  CHSC110871  Acer circinatum Tim Hanson 2013-9-24 11 Butte Northern Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. 902 Comment
  CHSC51843  Acer macrophyllum Richard Steward 1988-3-6 1 Butte East bank of small stream, ca. 4.2 mi N, 0.3 mi E of Tall Pines Golf Course, Paradise. 640 Comment
  CHSC84636  Acer macrophyllum Matt Quinn 2001-4-4 15 Butte Along Honey Run Creek. From the confluence with Little Butte Creek upstream approximately 2 miles. 213 Comment
  CAS-BOT-BC21748  Achillea millefolium Lowell Ahart 1985-5-15 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC42933  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC49581  Achnatherum lemmonii Vernon Oswald 1983-7-6 835 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  CHSC57164  Achnatherum lemmonii J. D. Jokerst 1980-4-18 Butte Edge of Nimshew Road, 1.0 mi south of town of Nimshew. Comment
  CAS-BOT-BC216376  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak 2151 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CHSC28476  Acmispon americanus var. americanus Robert Schlising 1979-8-17 3467 Butte Richvale vernal pools. 1/4 mi s of jct hwys 162 to Oroville and 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC42559  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 1/2 miles south-west of Pulga. 365 Comment
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC28156  Acmispon brachycarpus R. J. Goedl 1979-4-14 10 Butte Ca. 6 mi n of Oroville 0.5 mi w of Cherokee Mountain Road. 365 Comment
  CHSC2923  Acmispon brachycarpus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 457 Comment
  CHSC97361  Acmispon parviflorus Paul Maslin 2005-5-1 59 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609754E 4410046N. 243 Comment
  CHSC20402  Aconitum columbianum D. E. Brink 1974-6-14 Butte Snag Lake, ca. 175 yds downstream from the confluence of the two outfalls of the lake. Comment
  UC1594727  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte ca. 2 (air) mi. n Snow Mt. (ca. 1/2 mi. n. of Carr Mine) 1767 Comment
  CHSC52674  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-27 359 Butte N part of county, n of Philbrook Reservoir at Coon Hollow. 1706 Comment
  CAS-BOT-BC412594  Aconogonon alaskanum A. A. Heller 1914-8-8 11672 Butte Jonesville 1524 Comment
  CHSC109864  Aegilops triuncialis L. P. Janeway 2012-6-7 10858 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC29615  Agoseris grandiflora var. grandiflora Lowell Ahart 1988-6-21 6054 Butte Along Poe Power House Road, about 3/4 mi N of Poe Power House, about 1 1/4 mi SE of Jarbo Gap 426 Comment
  CHSC112689  Agrimonia gryposepala Lowell Ahart 2013-7-1 18815 Butte Meadow, 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
  CHSC41978  Agrostis avenacea Lowell Ahart 1986-11-14 5468 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
  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
  CHSC50567  Agrostis capillaris Vernon Oswald 1990-7-9 4357 Butte Paradise Lake, ca. 3 mi north of Magalia. 777 Comment
  CAS-BOT-BC127333  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Edge of North Honcut Creek. 50 Comment
  CAS-BOT-BC127375  Agrostis exarata Lowell Ahart 1982-9-13 3828 Butte Along a small stream that flows into Pinkard Creek, below the dirt road, which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  CHSC111735  Agrostis exarata Lowell Ahart 2012-6-21 18204 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell park, Chico. 62 Comment
  CHSC44913  Agrostis exarata Lowell Ahart 1988-7-24 6127 Butte At the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC61654  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UCD52371  Agrostis exarata P. B. Kennedy 1920-8-9 X 3098 Butte Chico, Field - Campus - Berkeley. Comment
  SEINET10789990  Agrostis exarata Lowell Ahart 1988-7-31 Ahart 6152 Butte Spike Bentgrass. On damp soil, around stream rounded boulders, on the east side of West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City, Butte County, California. 914 Comment
  CAS-BOT-BC139438  Agrostis hyemalis A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC46603  Agrostis idahoensis V. Oswald; L. Ahart 1989-7-21 3881 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  JEPS121947  Agrostis idahoensis Lowell Ahart 2014-7-7 19587 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  RSA129604  Agrostis idahoensis H. S. Yates 1936-8-13 6106 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  CHSC43177  Agrostis scabra Robert Banchero 1981-7-28 631 Butte Jones Meadow, Ca 5 air mi e of Inskip. 1842 Comment
  JEPS95031  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  UCD53268  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadows. 1341 Comment
  LA206334  Agrostis stolonifera H. S. Yates; 1936-8-13 6105 Butte 2.5 SE of Butte Meadow 1493 Comment
  CHSC46624  Agrostis variabilis Vernon H. Oswald 1989-7-27 3897 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC49494  Agrostis variabilis V. Oswald; L. Ahart 1988-8-16 3692 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC78714  Ailanthus altissima L. P. Janeway; B. Castro 2000-5-9 6713 Butte Sacramento Valley. South side of Chico; backyard of house on south side of 19th Street between Park Avenue and Salem Street. 60 Comment
  CHSC31162  Aira caryophyllea M. S. Taylor 1980-3-1 2351 Butte SE facing cliff looking into Hamlin Canyon, ca. 1/2 mi e of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  SACT000327  Aira elongata Herbert Copeland 1930-7-25 Butte in meadow below cabin 1500.0 Comment
  CDA43009  Albizia julibrissin L. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  JEPS110041  Alisma plantago-aquatica Lowell Ahart 2006-10-8 13437 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
  CAS-BOT-BC445431  Alisma triviale Lowell Ahart 1972-7-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  SEINET10471915  Allium Mary Susan Taylor 1980-4-27 Taylor 2575 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC49471  Allium amplectens Vernon Oswald 1988-6-13 3375 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  CHSC51934  Allium amplectens E. Ray Latham 1988-4-21 Butte 100 m E of the E end of Fremont St, Chico. 30 Comment
  HSC39466  Allium amplectens J. P. Smith, J. O. Sawyer 1973-4-14 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  POM110215  Allium amplectens C. C. Bruce 1897-03 1898 Butte [No locality information provided] Comment
  UCD138481  Allium amplectens Johann D. Watjen 1969-5-4 43 Butte Table Mountain, 7 miles south off State Highway 70 and 2/10 mile off Cherokee Road. 609 Comment
  CAS-BOT-BC465437  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  HSC32558  Allium cratericola David Johnson 1974-4-20 42 Butte Table Mtn. Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  HSC32624  Allium cratericola Dave Knorr 1974-4-20 142 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  CAS-BOT-BC135820  Allium jepsonii B. Castro 1993-7-5 492 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, on WSW-facing slope below N edge of sharp curve in USFS Rd 23N28. 1133 Comment
  CHSC47048  Allium jepsonii R. A. Schlising; P. Broyles 1988-7-9 4582 Butte E of Paradise and Magalia, N of Oroville and Jarbo Gap. 929 Comment
  CHSC29721  Allium membranaceum J. D. Jokerst 1980-4-17 586 Butte Top of North Table Mt. Northern tip. 472 Comment
  JEPS108540  Allium obtusum var. obtusum L. P. Janeway 2006-5-28 8642 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +/- exposed granite ridge surrounded by mixed conifer forest 1248 Comment
  CHSC59362  Allium peninsulare J. L. Guardino 1992-4-18 15 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  CHSC33657  Allium validum R. Schlising; R. Banchero, J. Fuller, M. Merryman 1981-7-19 4154 Butte E of Stirling City, on S side of Bald Mt. 1691 Comment
  CHSC45441  Allophyllum divaricatum Lowell Ahart 1984-6-8 4673 Butte Along the dirt road near the water tower that is above the generator, about 2 miles north of Forbestown, about 1 mile east of the Ponderosa Dam. 457 Comment
  SD122561  Allophyllum divaricatum Lowell Ahart 1984-6-8 4664 Butte At the Ponderosa Dam, ca. 2.0 miles northwest of Forbestown. 370 Comment
  SEINET12328367  Allophyllum divaricatum L. Ahart, Ahart, P. 1983-1 4258 Butte ca 3 mi E of Milsap Bar, ca 25 mi NE of Oroville 1100 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
  CHSC23633  Alnus incana subsp. tenuifolia M. S. Taylor 1976-4-4 1050 Butte On Ernies Island, ca. 50 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows, on Butte Creek. 1706 Comment
  CHSC93984  Alnus incana subsp. tenuifolia R. D. Fischer 2004-6-20 763 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. At south end of pond. 1371 Comment
  CHSC46714  Alopecurus aequalis V. Oswald; L. Ahart 1989-8-22 3957 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  CHSC42836  Alopecurus carolinianus Lowell Ahart 1987-5-10 5606 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC36403  Alopecurus geniculatus J. Boze 1982-5-2 422 Butte In lawn end of Michael Way ca. 1 1/2 mi. E. of Hwy 99 off Eaton Rd. Comment
  UC1586628  Alopecurus saccatus Lowell Ahart 1991-5-16 6654 Butte ca. 12 mi. s. of Oroville (ca. 2 1/4 mi. n. and 1/2 mi. e. of Honcut, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  SEINET10511195  Alopecurus saccatus M. E. Banning 1969-4-18 Banning 76 Butte Table Mt., 1/2 mi. from Ore. City junction. 488 Comment
  CHSC21244  Amaranthus albus M. S. Taylor 1975-6-21 774 Butte In field at end of Citrus Ave, between 11th and 12th Aves, Chico. Comment
  JEPS127068  Amaranthus albus Lowell Ahart 2016-5-30 20892 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC51248  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  UC1563277  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  CHSC42942  Amaranthus deflexus Lowell Ahart 1987-7-19 5842 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC21137  Amaranthus retroflexus M. S. Taylor 1975-10-3 930 Butte Along slough near bridge over river rd, ca. 10 mi w of Chico. 36 Comment
  RSA713019  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and about 1 mile east of Honcut, about 12 miles south of Oroville 31 Comment
  CHSC85142  Amaranthus rudis John Dittes 2003-10-8 847 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC45625  Ambrosia psilostachya Vernon Oswald 1987-8-9 3195 Butte Hwy 32 N of Forest Ranch at the 35.0 mi road marker, 3 mi S of Lomo. 1158 Comment
  CHSC66835  Ambrosia psilostachya Vernon H. Oswald 1996-8-29 8245 Butte Sacramento River National Widlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the southwest corner of Tract 3.4, Sanctuary II. 32 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
  CHSC108142  Ammannia coccinea Lowell Ahart 2011-10-29 17719 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
  CHSC83017  Ammannia coccinea Lowell Ahart 2002-10-17 10002 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
  CHSC29012  Amsinckia intermedia M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Clear Creek Cemetary, ca. 1 mi e of Clark Rd, ca. 7 mi sw of Paradise. 152 Comment
  CHSC31578  Amsinckia intermedia L. Ahart 1975-4-6 741 Butte On dredger piles along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC116985  Anagallis arvensis Lowell Ahart 2016-6-4 20937 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  UC1586573  Anaphalis margaritacea Lowell Ahart 1991-8-25 6710 Butte n side of, 5 mi e of hwy 70 Four Trees Road; Mill Creek 1066 Comment
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  CHSC31898  Anethum graveolens L. Ahart 1975-7-7 854 Butte In garden on good soil; Peter Ahart Ranch, Honcut. 45 Comment
  JEPS108991  Anthemis cotula Lowell Ahart 2006-10-8 13427 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
  CAS-BOT-BC84694  Anthemis cotula A. A. Heller 1923-8-13 13830 Butte Chico Comment
  CAS-BOT-BC137750  Anthoxanthum odoratum Lowell Ahart 1988-7-31 6150 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  JEPS113809  Anthoxanthum odoratum Lowell Ahart 2007-6-1 13968 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 30 Comment
  CDA5612  Anthriscus caucalis L. Ahart 2005-4-18 11729 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SEINET10964533  Antirrhinum leptaleum Lowell Ahart 1990-10-5 Ahart 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S7. 267 Comment
  CHSC28519  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor; J. D. Jokerst 1979-10-13 2275 Butte On w side of Jordan Hill Rd, ca. 11.5 mi n of its jct with Concow Rd, ca. 2.3 mi n of Sawmill Reak, ca. 2 mi ne of Magalia. 731 Comment
  JEPS98474  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  JEPS107436  Aphanes occidentalis Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11660 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  JEPS129818 Image available Aphyllon epigalium Karen D. Cox 1974-6-1 188 Butte Paradise, found in yard at 1332 Elliott Road. Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  CHSC51049  Apocynum androsaemifolium Pauleen Broyles 1987-5-21 1042 Butte Bike path N and S of Elliott Road, in Paradise. Comment
  UC426935  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville 1650 Comment
  RSA253211  Apocynum androsaemifolium subsp. pumilum A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  CHSC40376  Apocynum cannabinum Lowell Ahart 1985-6-30 5072 Butte Along edge of the Oroville Bangor Highway, 100 yards east of the intersection with Wyandotte Miners Ranch Road, about 7 miles south-east of Oroville. 274 Comment
  SEINET10455429  Apocynum pumilum var. rhomboideum Lowell Ahart 1985-6-17 Ahart 5047 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  UCR88769  Aquilegia formosa J. T. Howell 1951-8-19 28156 Butte Sierra Nevada Mtns., 2 miles west of Pulga 366 Comment
Read comments
Oct 10 2010
  CHSC1433  Aquilegia formosa var. truncata R. Carter 1964-6-15 128 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff where Bear Ranch Rd. le ves Hwy. 40A. 609 Comment
  POM196106  Aquilegia formosa var. truncata E. B. Copeland 1929-7-15 362 Butte Jonesville. 1550 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
  RSA718085  Arabis rectissima L. Ahart 2006-7-16 12969 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SEINET10972994  Aralia californica Lowell Ahart 1985-7-9 Ahart 5106 Butte About 1 mile south of the Ponderosa Dam Across the South Fork of the Feather River, about 3 miles north-west of Forbestown. Comment
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CHSC4596  Arctostaphylos C. Glascock 1965-2-27 200 Butte Ca. 15 yds. N of corner of Meadowview and Oro-Quincy Hwy., 2 mi E of Oroville. 36 Comment
  RSA633006  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27479 Butte Ponderosa Way, south of Cohasset. 750 Comment
  UCD52158  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51104 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52161  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51089 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52162  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51103 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC24416  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-19 15500 Butte Neal Rd. 3 mi. w. of Paradise. Comment
  SBBG128108  Arctostaphylos manzanita subsp. manzanita L. Ahart 2009-11-19 16564 Butte W side of Ten Mi House Rd, just N of Guardians Trail, upper Bidwell Park, ca. 0.25 mi W of intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 381 Comment
  CAS-BOT-BC24299  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  CHSC109062  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail, about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 397 Comment
  CAS-BOT-BC38527  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51109 Butte Paradise. Skyway just ne. of Billie Rd. 609 Comment
  CAS-BOT-BC38556  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51563 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CHSC588  Arctostaphylos patula subsp. patula L. Stone 1930-4-6 Butte Between Butte Meadows and Jonesville. 1280 Comment
  SEINET10973472  Arctostaphylos viscida Mary Susan Taylor 1981-3-31 Taylor 3456 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  CAS-BOT-BC47380  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51100 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47389  Arctostaphylos viscida subsp. viscida Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6302 Butte Paradise at Berkshire Way and Bille Road just off The Skyway. Next to a bike trail. 274 Comment
  CAS-BOT-BC48254  Arctostaphylos viscida subsp. viscida Lowell Ahart 1990-3-9 6412 Butte About 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heighs Road, 30 Comment
  CAS-BOT-BC137551  Aristida oligantha Lowell Ahart 1976-12-29 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CHSC25404  Aristida ternipes var. hamulosa Hayes; Warner 1977-9-11 57 Butte Exactly 3.5 mi e of the Hwy 99 overpass on Hwy 32 e of Chico, ca. 1 m s of road. 137 Comment
  CAS-BOT-BC400422  Aristolochia californica Mrs. C. C. Bruce 1897-3-1 1794 Butte Little Chico Comment
  CAS-BOT-BC400424  Aristolochia californica Lowell Ahart 1980-3-8 2028 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC400432  Aristolochia californica John Thomas Howell 1967-6-22 42644 Butte 3 miles ne. of Pulga Bridge - Canyon of the Feather River North Fork Comment
  CAS-BOT-BC400434  Aristolochia californica John Thomas Howell; Gordon H. True 1969-4-9 45493 Butte About 5 miles north of Pentz on road to Magalia Comment
  UCD129196  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville. 1550 Comment
  CHSC39050  Arnica discoidea R. A. Schlising; R. Banchero 1980-6-17 3741 Butte Paradise Lake, N of Magalia. 731 Comment
  CHSC110044  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC94568  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 Butte Gravel bar, south side 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
  NY43502  Artemisia douglasiana S. Bianco 1995-8-26 1021 Butte Concow area, E of Concow Rd, along Kakini Rd 762 Comment
  SEINET252473 Image available Artemisia douglasiana Leila M. Shultz, Heather Garrison 2006-1 20317 Butte East of Oroville along hwy 70, turnoff for Big Bend road. Comment
  CHSC39421  Asclepias cordifolia J. D. Jokerst 1984-5-24 2030 Butte North Table Mountain. Edge of Beatson Hollow ca 250 meters north of Cherokee Rd. along the wooded west edge of the canyon. 350 Comment
  SEINET10870123  Asclepias cordifolia Mary Susan Taylor 1980-5-31 Taylor 2775 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  UCD121248  Asclepias cordifolia L. Ahart 1977-4-16 1309 Butte Near Honcut. 50 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
  CHSC32144  Aspidotis californica L. Ahart 1975-4-1 734 Butte Along Ponderosa Way, near Feather Falls. 365 Comment
  CHSC28626  Aspidotis densa M. S. Taylor 1979-3-19 1926 Butte In vicinity of Pulga bridge over Hwy 70 over Feather River, ca. 25 mi ne of Oroville. 487 Comment
  CHSC30702  Aspidotis densa M. S. Taylor 1980-5-27 2706 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  RSA189461  Aspidotis densa L. S. Rose 1967-5-8 67076 Butte 1 mile south of Pulga, North Fork, Feather River 427 Comment
  SDSU6340  Aster oregonensis subsp. californicus D. F. Howe 1960-9-20 2986 Butte North fork of Feather River, 28 miles from Oroville. 518 Comment
  CHSC33759  Aster radulinus Robert A. Schlising 1979-9-6 3485 Butte Near jct Hwy 32 and Forest Ranch Road above Forest Ranch. Comment
  CHSC108827  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 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
  CHSC33696  Astragalus gambelianus L. Ahart 1981-4-9 2751 Butte Near North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC38489  Astragalus gambelianus Vernon Oswald 1983-4-9 310 Butte Upper Bidwell Park, Chico, on the north rim about 200 ft w of the power lines. 249 Comment
  CAS-BOT-BC27797  Astragalus pauperculus C. C. (Mrs.) Bruce 1898-3-1 2430 Butte Plains Comment
  CHSC29234  Astragalus pauperculus M. S. Taylor 1980-3-15 2380 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  RSA178644  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte Along Pacific Hwy 9 miles north of Chico. Comment
  CHSC58265  Astragalus tener var. ferrisiae Lowell Ahart 1992-5-23 6770 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  POM45818  Astragalus tener var. ferrisiae C. C. Bruce 1897-04 2078 Butte Oroville road. Comment
  CHSC42895  Asyneuma prenanthoides L. P. Janeway 1984-7-15 924 Butte Just W of Rogers Cow Camp. 1249 Comment
  CHSC116011  Athyrium distentifolium var. americanum Lowell Ahart 2015-10-9 20549 Butte On the northside of the dirt road to Lotts Lake, about 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir dam. 1842 Comment
  SEINET10532283  Athyrium filix-femina Mary Susan Taylor 1978-7-19 Taylor 1737 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  POM196122  Athyrium filix-femina subsp. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CAS-BOT-BC68690  Athyrium filix-femina var. californicum Lowell Ahart 1983-9-21 4461 Butte 3 miles north of the Sly Creek Dam, north of the Strawberry Valley, along a small stream which is called French Creek 900 Comment
  CHSC51051  Athysanus pusillus Pauleen Broyles 1987-3-24 997 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer addition. Bank along Pine Creek just S of its confluence of Singer Creek. 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
  SEINET11986399  Athysanus pusillus Unknown 1976-1 13 Butte ca 10 ft N of Ponderosa Way, ca 4 mi W of jct of Ponderosa Way & Hwy 32, ca 22 mi NE of Chico 427 Comment
  CAS-BOT-BC172673  Atriplex lentiformis Lowell Ahart 1981-7-26 3008 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  UCD97798  Atriplex serenana A. A. Heller 1919-8-9 13350 Butte Chico. Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  UC577598  Avena fatua C. G. Albertus 1933-6-6 Butte 1/4 mi w Pentz; Chico Quadrangle 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
  JEPS111348  Azolla filiculoides R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CAS-BOT-BC66255  Azolla mexicana M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4370 Butte Pennington quad., ca. 1/2 mi s of HQ on Graylodge Waterfowl Refuge, ca. 12 mi sw of Gridley 19 Comment
  CAS-BOT-BC98759  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Growing on dry dark soil along the edge of a small wash - Palermo 100 Comment
  CHSC66661  Baccharis douglasii Vernon H. Oswald 1996-7-17 8069 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  POM350340  Baccharis glutinosa L. Ahart 1984-10-14 4814 Butte North Honcut Creek, about 3/4 mile north and 2 miles east of Honcut, on Joie Osgood property, about 12 miles south of Oroville. 40 Comment
  UC57396  Baccharis salicifolia subsp. salicifolia H. E. Brown 1896-10-2 120 Butte near Oroville 53 Comment
  CHSC55145  Bacopa eisenii Lowell Ahart 1991-10-25 6732 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC66361  Bacopa rotundifolia Vernon H. Oswald 1996-6-20 7830 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  CHSC6025  Bambusa M. MacArthur 1968-6-19 240 Butte Along NW side of Big Chico Creek, ca. 200 ft. NE bridge to PSA bld., Chico State College. 60 Comment
  CHSC33226  Barbarea orthoceras R. E. Preston 1981-6-11 84 Butte On a gravel bar on n side of Butte Creek, ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  SEINET10838816  Bassia hyssopifolia Lowell Ahart 1983-9-19 Ahart 4453 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  JEPS104405  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. Comment
  CHSC66355  Bidens frondosa Vernon H. Oswald 1996-6-20 7833 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NW corner of Tract 2, Sanctuary II. 33 Comment
  CAS-BOT-BC412960  Bistorta bistortoides H. F. Copeland 1920-8-12 132 Butte Jonesville 1219 Comment
  NY31003  Blennosperma californicum C. B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 0.5 mile southeast of Butte Creek on Chico-Oroville road 57.9 Comment
  JEPS119678  Blennosperma nanum var. nanum Lowell Ahart 2012-5-4 17988 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
  JEPS104354  Boechera breweri subsp. shastaensis Lowell Ahart 2003-4-10 10063 Butte On basalt cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  SD9258  Botrychium simplex E. B. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  CHSC43059  Boykinia major L. P. Janeway 1987-6-19 2235 Butte Along Sly Creek; 2.1 mi from the Challenge-La Porte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC107902  Brachypodium distachyon L. P. Janeway 2011-6-29 10411 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-BC30307  Brassica nigra Lowell Ahart 1974-5-18 s.n. Butte About 3 miles north of Honcut. 150 Comment
  CHSC100874  Brickellia californica L. P. Janeway 2008-10-8 9605 Butte Cascade Range Foothills Upper Bidwell Park, Chico; north side of Big Chico Cree 455 m west of Day Camp. 91 Comment
  RSA385271  Briza minor M. M. Boney 1897-1 1924 Butte [No locality information provided] Comment
  CHSC75412  Brodiaea californica var. californica Jennifer Slater 1997-4-20 29 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 94 Comment
  JEPS74710  Brodiaea californica var. californica W. L. Jepson 1932-5-9 16366 Butte e Cana (on Red Bluff-Chico road) 57 Comment
  UC203643  Brodiaea californica var. californica A. A. Heller 1914-5-11 11385 Butte 8 mi n Oroville Comment
  SEINET10533792  Brodiaea elegans A. Arthur Heller 1914-5-8 Heller 11382 Butte Clear Creek school house. Comment
  SEINET10872217  Brodiaea elegans Lowell Ahart 1983-6-6 Ahart 4028 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC117441  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC482927  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte Near the Chico airport Comment
  CHSC29094  Brodiaea minor M. S. Taylor; J. D. Jokerst 1980-5-15 2620 Butte Ca. 1/2 mi e of Cohasset Rd, ca. 3 mi n of Chico. 91 Comment
  CAS-BOT-BC484561  Brodiaea minor Carl Purdy 1939-1-1 s.n. Butte Unspecified Comment
  CAS-BOT-BC484576  Brodiaea purdyi Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  HSC66096  Brodiaea purdyi M. S. Taylor, R. S. Schlising 1980-6-7 3085 Butte N side of Old Humboldt Rd. just W of Butte Meadows Ranger Station 1341 Comment
  CHSC39667  Brodiaea sierrae Lowell Ahart 1983-6-21 4081 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  JEPS120851  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown Comment
  UCD58295  Bromus carinatus var. californicus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC88253  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  CAS-BOT-BC148837  Bromus carinatus var. marginatus Lowell Ahart 1984-6-10 4706 Butte Along the edge of the dirt road, about 2 miles southwest of the Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  UC1131009  Bromus commutatus C. G. Albertus 1933-6-6 14 Butte 1 mi w of Nelson's Bar 274 Comment
  CAS-BOT-BC156075  Bromus diandrus John Thomas Howell 1967-6-22 42627 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC4414  Bromus diandrus J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park. Chico. Comment
  SEINET3823231 Image available Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18745 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction East Gridley Road and CA-70 (Honcut 7.5' Q) 23 Comment
  HSC41095  Bromus hordeaceus J. P. Smith, J. O. Sawyer 1973-4-14 6047 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC117543  Bromus japonicus Lowell Ahart; John Dittes 2016-7-13 21144 Butte Scattered along the west edge of the pond, 100 yards south of County Road A02, 5.3 miles (air) east of Biebedr, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CAS-BOT-BC162454  Bromus laevipes John Thomas Howell 1962-6-15 37495 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC74912  Bromus laevipes E. Hubert 1996-6-24 Butte Ca 6 air mi NE of Paradise, ca 2 mi NNE of Concow Reservoir and 200 ft W of large bend in Concow Rd, 0.5 mi S of its jcn with Ponderosa Way (Rim Rd). Serpentine outcrop. 883 Comment
  RSA712998  Bromus laevipes L. Ahart 2006-5-19 12631 Butte 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. On the west side of the dirt road 406 Comment
  UCD58892  Bromus laevipes P. B. Kennedy 1914-5-1 4753 a Butte Grade to Paradise. Comment
  SEINET10520260  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CAS-BOT-BC162360  Bromus madritensis Lowell Ahart 1983-6-21 4078 Butte Along Bloomer Hill Road, ca. 0.75 mile west of the Oroville Quincy Highway, ca. 15 mile northeast of Oroville. 425 Comment
  CHSC28998  Bromus madritensis subsp. rubens M. S. Taylor 1980-4-1 2423 A Butte On bluffs on s side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC3922  Bromus madritensis subsp. rubens H. E. Lindahl 1967-3-20 18 Butte Ca. 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. 60 Comment
  CHSC41139  Bromus madritensis subsp. rubens R. L. Ondricek-Fallscheer 1982-3-22 130 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
  JEPS118076  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville 42 Comment
  JEPS113251  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northea 844 Comment
  UCR266717  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  SEINET10966940  Bromus orcuttianus Mary Susan Taylor 1978-7-18 Taylor 1674 Butte On W side of Hwy. 32 on edge of Yellow Pine Froest, in dry open area, ca. 1/4 mile N of Forest Ranch. 718 Comment
  CAS-BOT-BC161963  Bromus rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  SEINET10934048  Bromus rubens A. Arthur Heller 1914-4-11 Heller 11279 Butte Hills 8 miles N of Oroville. Comment
  CHSC59039  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte Along the west side of Lone Tree Road, about 1/4 mile south of the intersection of Powerhouse Hill Road and Lone Tree Road, about 4 miles south of Oroville. 60 Comment
  CHSC61366  Bromus vulgaris Lowell Ahart 1993-7-22 7073 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  RSA794453  Bulbostylis capillaris P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25708 Butte 0.5 air miles northeast of Little Bald Rock, northeast of and below Bean Creek Road 0.6 road miles from Bald Rock Road. Northern Sierra Nevada Highlands. 1005 Comment
  CAS-BOT-BC185474  Calamagrostis canadensis Vernon Oswald; Lowell Ahart 1987-7-1 3059 Butte Scotts John Creek 1.3 mile north of the road connecting Humboldt and Humbug Roads, ca. 2.5 miles east northeast of Jonesville. 1813 Comment
  CAS-BOT-BC438355  Calandrinia ciliata H. E. Brown 1897-5-1 158 Butte Near Clear Creek Comment
  CHSC2396  Calandrinia ciliata var. menziesii R. Carter 1965-3-13 163 Butte Found ca. 7 mi E of Oroville at 6120 W. S. R., on S side of house beside water faucet. 274 Comment
  CHSC82529  Callistemon citrinus Tara Morgan 2002-5-2 53 Butte Along many roadsides within the Chico area especially along highway 99. This particular collection is from the highway 32 and E. 8th st. intersection on the corner of the highway 99 overpass. 89 Comment
  CHSC29268  Callitriche heterophylla var. bolanderi R. A. Schlising 1980-4-2 3540 Butte Richvale vernal pools, 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC97379  Callitriche heterophylla var. bolanderi Paul Maslin 2006-5-3 37 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609374E 4410375N. 342 Comment
  SEINET10531072  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Skyway in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  SEINET3884902  Calochortus albus Johann D. Watjen 1969-5-4 32 Butte Table Mountain, 0.4 mile off of Highway 70, 2 miles southwest of West Fork Feather River.; 0 98 Comment
  CHSC25013  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC489922  Calochortus leichtlinii Lowell Ahart 1982-6-4 3551 Butte About 8 miles east of Feather Falls. 304 Comment
  CAS-BOT-BC491846  Calochortus luteus Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  UC311628  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 213 Butte near Paradise (in the lower Sierra Nevada); Sierra Nevada 600 Comment
  UC565381  Calochortus monophyllus Helen Hedges 1937-5-22 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  CAS-BOT-BC492601  Calochortus monophyllus Jim Riley 1923-4-2 s.n. Butte Richardson Spring Comment
  SEINET10469601  Calochortus monophyllus Mary Susan Taylor 1973-1 Taylor 28 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  UC725526  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte about 2 mi w Paradise (on the Clark Road) Comment
  CHSC34485  Calochortus superbus J. D. Jokerst 1978-5-21 128 Butte Ca 200 met w of Hwy 32 on top of ridge. 365 Comment
  CAS-BOT-BC493343  Calochortus superbus Lowell Ahart 1980-5-25 2318 Butte Along Swedes Flat Road, near Bangor Comment
  CHSC83427  Caltha leptosepala var. biflora L. P. Janeway 2002-5-26 7564 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
  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
  UC194199  Calycadenia fremontii H. M. Hall 1914-7-19 9761 Butte Richardson Spring, near Chico 91 Comment
  UCD135720  Calycadenia fremontii Bruce G. Baldwin; Gerald D. Carr 1988-6-9 710 Butte ca. 1 mile south of Broyles Road, less than 1 mile west of State Highway 99. Comment
  CDA10576  Calycadenia oppositifolia J. Glazner, D. Zippin 1999-6-15 s.n. Butte Sierra Nevada; Upper reach of Nance Canyon, 3/8 mile south-southeast of Skyway Boulevard under transmission line. Comment
  CHSC30687  Calycadenia oppositifolia M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2294 Butte Magalia serpentine area rd to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC62147  Calycadenia oppositifolia B. Castro 1987-5-21 124 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. In middle of dirt road along top of ridge. 487 Comment
  CHSC62422  Calycadenia oppositifolia B. Castro 1987-5-18 110 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. Ca 100 ft above ephemeral drainage. 445 Comment
  POM298231  Calycadenia oppositifolia D. D. Keck 1933-5-31 2411 Butte 4.3 miles N of Chico on Richardson Springs Rd. Comment
  RSA255508  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  JEPS120033  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  UC1119109  Calycadenia spicata F. W. Embree 1934-4-24 44 Butte 4 1/2 mi n and 1 1/2 mi e of Biggs; Marysville 38 Comment
  CAS-BOT-BC270881  Calycadenia spicata H. M. Hall 1930-8-10 12873 Butte Oroville Road, 9 miles from Chico 60 Comment
  RSA255510  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles SW of Oroville Dam Blvd. Comment
  CHSC25457  Calycadenia truncata Marc Hayes; Warner 1977-9-12 99 Butte On Butte College Campus, at intersection of Pentz and Clark Rds., ca. 15 SE of Chico. 82 Comment
  JEPS127135  Calycanthus occidentalis Lowell Ahart 2016-8-29 21317 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UCD166582  Calycanthus occidentalis Dylan O. Burge 2016-8-6 2122 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  UCD100350  Calyptridium monospermum Alva Day 1939-5-31 s.n. Butte Mooretown. Comment
  CAS-BOT-BC223608  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; beside Skyway 650 Comment
  HSC103791  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte High Cascade Range. 150 m W of Hwy. 32, 3.0 km. south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  CHSC6019  Camellia japonica M. MacArthur 1968-6-19 266 Butte Se side of Auditorium bld., Chico State College. 60 Comment
  SEINET10463342  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte MERRIMAC 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
  SEINET10458022  Campsis radicans Mary Susan Taylor 1975-6-30 Taylor 823 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC38555  Cannabis sativa Vernon Oswald 1982-11-6 11 Butte Bidwell Park, Chico. Along the edge of the parking lot at Salmon Hole. 158 Comment
  CHSC11084  Capsella bursa-pastoris Lowell Ahart 1965-3-10 Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC3246  Capsella bursa-pastoris Virginia Hagaman 1966-2-21 15 Butte 2 1/2 miles east of Butte Creek and west of 99E. Comment
  CHSC42102  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC38416  Cardamine oligosperma Vernon Oswald 1983-3-4 109 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. at a point 2.4 mi e of the power lines. 256 Comment
  CHSC39612  Cardamine oligosperma Lowell Ahart 1983-3-28 3910 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  SEINET10448560  Cardamine oligosperma Mary Susan Taylor 1981-4-5 Taylor 3498 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
  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
  CAS-BOT-BC38056  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  JEPS105650  Cardamine pachystigma L. P. Janeway, Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River 341 Comment
  CAS-BOT-BC17812  Carex amplifolia Lowell Ahart 1983-9-17 4439 Butte About 0.25 mile southeast of Stirling City. 1100 Comment
  CHSC39394  Carex amplifolia L. Ahart 1983-9-17 4439 Butte Ca. 1/4 mi se of Stirling City. 1100 Comment
  CHSC44438  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC84927  Carex angustata L. P. Janeway 2003-7-13 7899 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 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
  CHSC104785  Carex bolanderi L. P. Janeway 2010-6-19 10029 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  SEINET7552591 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11403 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  HSC87062  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  CHSC52854  Carex densa L. P. Janeway 1988-5-30 2716 Butte Canyon of Big Chico Creek; upper Bidwell Park, 3.8 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  JEPS94824  Carex densa Lowell Ahart 1998-6-9 7989 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
  CAS-BOT-BC422333  Carex divulsa subsp. divulsa P. F. Zika; L. Janeway 2012-5-17 25873 Butte Near Camelia Way bridge, N bank of Big Chico Creek, Chico, Sacramento Valley (ScV), Ahart's station 60 Comment
  JEPS121405  Carex divulsa subsp. divulsa P. F. Zika & L. Janeway 2012-5-17 25873 Butte near Camelia Way bridge, N bank of Big Chico Creek, alluvium over andesite, Chico Comment
  SEINET8027623 Image available Carex echinata L. Janeway, Gog, L 2008-1 3196 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi W of Cherry Creek Campground. Comment
  CHSC104835  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 406 Comment
  JEPS120089  Carex feta Lowell Ahart 2012-6-2 18138 Butte About 40 yards north 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
  SEINET10650513  Carex feta Lowell Ahart 1987-5-6 Ahart 5544 Butte On damp to dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET7559907 Image available Carex globosa John Thomas Howell 1967-6-22 42605 Butte Magalia. 701 Comment
  CAS-BOT-BC28378  Carex gracilior Lowell Ahart 1982-5-28 3441 Butte Near North Honcut Creek, N of the Peter Ahart Ranch, ca 1.5 mi N and 3 mi E of Honcut. 50 Comment
  CHSC106467  Carex gracilior Peter F. Zika 2009-6-17 24509 Butte Cascade Range Highlands (CaRH). Partly shaded margin of small unnamed creek, SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC43886  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2418 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  SEINET11173357  Carex heteroneura var. heteroneura Unknown 1999-7-17 6508 Butte Butte County Comment
  CAS-BOT-BC146669  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown 838 Comment
  SEINET4231761 Image available Carex integra L. Janeway, Gog, L 2008-1 3184 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  JEPS110203  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC7780  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte three miles southeast of Butte Meadows. 1554 Comment
  CHSC100934  Carex laeviculmis R. A. Schlising; R. Preston, R. Banchero 1982-6-23 4302 Butte Seep area in forest. 1219 Comment
  SEINET4286003 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 C Butte Near Cornelia Lott Sank Memorial Spring Comment
  HSC87071  Carex laeviculmis L. P. Janeway 1987-6-13 2203 Butte Edge of creek at road crossing, road to Mayaro, 1 mi. E of Concow Rd. 1107 Comment
  SEINET13376130  Carex lemmonii D. W. Taylor 2004-6-17 19104 Butte Flea Valley, 1128 Comment
  UC1609198  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte about 1/4 mi w Lost Creek Reservoir (on the s side of the dirt road) 1036 Comment
  UCR66603  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 457 Comment
  JEPS103108  Carex luzulina var. ablata L. P. Janeway, B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CHSC105477  Carex multicaulis L. P. Janeway 2010-6-19 10017 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  CHSC45057  Carex multicaulis Vernon Oswald 1984-4-9 1131 Butte Feather Falls Trail, 1.9 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  CHSC45059  Carex nervina Vernon Oswald 1988-6-20 3409 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  HSC87281  Carex nervina L. P. Janeway, Robert A. Schlising 1988-7-16 3012 Butte Along Willow Creek, 1 mi. W of Humbug Rd. 1799 Comment
  CAS-BOT-BC119561  Carex nudata L. P. Janeway 1989-5-19 3269 Butte Paradise East quad. W Branch Feather River at crossing of road from Magalia to Sawmill Peak 481 Comment
  CHSC52232  Carex pachystachya L. P. Janeway 1987-6-20 2254 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Road. 975 Comment
  CAS-BOT-BC118351  Carex praegracilis L. P. Janeway 1987-5-7 2021 Butte Drier part of marsh on NE side of Hwy 149, 1/2 mi NW of Hwy 70. Shippee quad. 74 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CAS-BOT-BC117984  Carex rossii L. P. Janeway; Robert A. Schlising; B. Castro 1988-7-23 3088 Butte Jonesville quad. Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CHSC49852  Carex specifica L. P. Janeway 1986-9-1 1833 Butte Northeast-facing slope above Philbrook Reservoir. 1798 Comment
  CAS-BOT-BC116745  Carex subfusca L. P. Janeway 1987-6-27 2343 Butte Along Little Kimshew Cr 0.7 mi N of the Concow Road. 1508 Comment
  CHSC45244  Carex subfusca S. C. Morey 1983-8-3 691 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS102954  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7621 Butte High Cascade Range. Along the County Road above the Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  JEPS120109  Carex subfusca Lowell Ahart 2012-6-28 18242 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SD472  Carex subfusca E. B. Copeland 1929-7-20 Butte Jonesville; in woods by Jones Creek; forming tufts, sometimes large. 1500 Comment
  SEINET7486528 Image available Carex subfusca Peter F. Zika 2009-6-17 24515 Butte below Concow Road 10 road miles above (N of) Route 70 1100 Comment
  SEINET5242710 Image available Carex subfusca Unknown 1915-6-25 12018 Butte Chico Meadows in the Sierra Nevada Comment
  UCD141167  Carex subfusca L. P. Janeway 1988-6-25 2873 Butte along Bull Hill road, 1.9 miles from Skyway. 1508 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC25333  Carex vesicaria M. P. Hayes; Warner 1977-8-14 40 Butte Marshy meadow along Butte Creek, 10 mi n of turn to Butte Meadows along Highway 32. 1280 Comment
  CHSC66453  Carex vulpinoidea Vernon H. Oswald; Lowell Ahart 1996-6-10 7754 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A canal at the NE corner of Tract 7.2, Sanctuary I. Common along all this canal, its laterals, and the edges of Tract 6, a permanent pool in Sanctuary I. 33 Comment
  JEPS114822  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 243 Comment
  RSA718801  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills: West side of Morris Ravine arm of Thermalito Diversion Pool (Feather River), 2.0 km north northeast of Thermalito Diversion Dam. 68 Comment
  CHSC109660  Carya glabra Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18275 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chlico. 71 Comment
  CHSC4603  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus, Chico. Comment
  CHSC6052  Castanea dentata M. MacArthur 1968-6-22 285 Butte Ca. 20 ft. SE of Bld. D along So-Will-lin-no st., Chico State College. 60 Comment
  SEINET14183553  Castilleja R. T. Short 1959-4-11 s.n. Butte On US Hwy 40 alt., 15 miles E of Oroville. 549 Comment
  CAS-BOT-BC248999  Castilleja A. A. Heller 1914-8-7 11658 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CAS-BOT-BC249111  Castilleja affinis Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC115004  Castilleja affinis subsp. affinis Lowell Ahart 2015-4-18 20047 Butte Above the road cut, on the north side of Swedes Flat Road, about 300 yards east of the bridge across Rocky Honcut Creek, about 8 1/2 miles (air) southeast of Oroville. 382 Comment
  CHSC40878  Castilleja applegatei subsp. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC64667  Castilleja applegatei subsp. pinetorum H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 871 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. 1010 Comment
  SEINET10931194  Castilleja applegatei var. fragilis Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4177 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  UC492739  Castilleja arachnoidea H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville Comment
  CHSC108829  Castilleja attenuata Lowell Ahart 2012-4-17 17875 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC44941  Castilleja attenuata E. Ray Latham 1988-4-21 Butte 100m e of e end Fremont st., Chico. 30 Comment
  CDA41336  Castilleja attenuata T. C. Fuller 1958-4-15 3804 Butte 1 mile south of Oroville. 0 Comment
  JEPS124207  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-11 20030 Butte About 1 1/2 miles northeast of Honcut, about 1/2 miles east of Parlemo Honcut Highway, about 12 miles (air) south of Oroville. Comment
  CHSC1828  Castilleja exserta E. Canfield 1904-4-23 Butte 76 Comment
  CHSC35073  Castilleja lacera R. Schlising; P. Broyles 1979-5-15 3406 Butte NE of Magalia and N of Sawmill Peak. 701 Comment
  CHSC65512  Castilleja lacera J. Ingraham 1995-4-2 19 Butte 7 mi n of Chico on Hwy. 99 and 1 mi e of Keefer Rd. s. 100 yds. 76 Comment
  CHSC40883  Castilleja pruinosa Lowell Ahart 1985-5-15 5002 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  SFV10456  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1968-6-5 775 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC33341  Castilleja rubicundula subsp. rubicundula R. Banchero; R. Schlising 1981-5-3 460 Butte 0.2 mi e of the jct of Meridian Rd and Hwy 99. Comment
  UC426965  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Scotch John meadow Scotch John meadow, Jonesville; Jonesville 1700 Comment
  CAS-BOT-BC48819  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada Foothills, 7 8/10 mi. below Paradise on Chico Road 152 Comment
  CHSC109561  Ceanothus cuneatus var. cuneatus L. P. Janeway 2012-6-23 10889 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC111155  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trail, about 50 yards southwest of Tem Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  CHSC38636  Ceanothus cuneatus var. cuneatus Vernon Oswald 1983-2-26 102 Butte Upper Bidwell Park, Chico, on the north slope at the level of the e end of Horseshoe Lake. 137 Comment
  JEPS119624  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trial, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. Comment
  RSA718378  Ceanothus integerrimus L. Ahart 2006-6-24 12860 Butte Dirt road (Ponderosa Way), at an intersection, a gated road goes NW on Cohasset Ridge, 3 3/4 miles (air) NE of Cohasset. 1128 Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  RSA0028424  Ceanothus lemmonii Jon E. Keeley 1996-6-20 27474 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CAS-BOT-BC52010  Ceanothus prostratus John Thomas Howell 1978-4-18 52850 Butte De Sabla 853 Comment
  CHSC11992  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville. 1600 Comment
  CHSC100473  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CHSC109683  Centaurea solstitialis Lowell Ahart 2012-7-5 18282 Butte On the north side of the gravel road, east of Cedar Grove. Lower Bidwell Park, Chlico. 71 Comment
  CHSC31597  Centaurea solstitialis L. Ahart 1977-6-16 1418 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37382  Centaurea solstitialis R. A. Schlising 1980-8-3 3962 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  SEINET11839287  Centaurea solstitialis Unknown 1969-1 98 Butte 0.5 mi N of Chico Municipal Airport on Cohasset Road Comment
  JEPS115181  Centaurium muehlenbergii Lowell Ahart 2009-6-30 15977 Butte On dry soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CHSC116729  Centaurium tenuiflorum Lowell Ahart 2016-5-25 20879 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road. about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  SEINET10972990  Centaurium venustum subsp. abramsii Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4039 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC288533  Centromadia fitchii John Thomas Howell 1974-9-19 50884 Butte Feather River Highway bridge at West Branch Feather River 304 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
  CHSC35042  Cerastium fontanum subsp. vulgare R. A. Schlising 1981-6-11 4071 Butte N of Butte Meadows and SW of Jonesville in N part of County, SW of Cherry Hill Campground; along Butte Creek. Comment
  CAS-BOT-BC388258  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  CHSC52368  Cercocarpus betuloides var. betuloides L. P. Janeway 1989-5-19 3267 Butte Near upper SE'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  SD8743  Chaenactis glabriuscula R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC277630  Chaenactis glabriuscula var. megacephala E. B. Copeland 1899-6-2 s.n. Butte Chico Comment
  SEINET10475244  Chaenactis glabriuscula var. megacephala Mary Susan Taylor 1976-4-27 Taylor 1099 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC79023  Chamaesyce maculata Lowell Ahart 2000-11-4 8717 Butte On the west side of Highway 70, about 50 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  UC869013  Chamaesyce maculata Willis H. Wheeler 1935-10-24 296 Butte Foreign Plant Introduction sta. Chico 76 Comment
  CHSC31696  Chamaesyce nutans L. Ahart 1974-8-14 600 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  JEPS115728  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC11914  Chamaesyce serpillifolia subsp. serpillifolia E. B. Copeland 1929-7-29 380 Butte Above Jonesville. 1750 Comment
  SEINET10529957  Cheilanthes carlotta-halliae Mary Susan Taylor 1980-5-27 Taylor 2662 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
  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
  CHSC69678  Chenopodium album Vernon Oswald 1983-7-13 868 Butte Upper Bidwell in Chico, within the enclosure which formerly housed the Hooker Oak. Comment
  RSA746977  Chenopodium album var. missouriense George K. Helmkamp, E. Helmkamp 2007-10-7 13065 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CDA3060  Chenopodium ambrosioides T. C. Fuller 1962-12-7 9955 Butte Hipp Ranch, end of Oliva Avenue, 0.5 miles east of Mt Ida Road, ca. 7 miles east of Oroville. 0 Comment
  POM312488  Chenopodium ambrosioides var. ambrosioides H. L. Mason, Verne Grant 1946-8-14 13026 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  JEPS103334  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS128761  Chenopodium strictum Lowell Ahart 2016-10-25 21373 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 13 miles south Oroville. Comment
  CHSC102985  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  UC1586525  Chenopodium vulvaria Lowell Ahart 1991-8-17 6703 Butte Durham Elementary School Durham (native plant garden) 54 Comment
  CHSC93970  Chimaphila menziesii R. D. Fischer 2004-6-20 751 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  HSC33027  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2493 Butte Beside SR 70 about 4 mi. S of Palermo Rd. Comment
  UC217459  Chlorogalum angustifolium H. M. Hall 1917-5-13 103 d2 Butte w Pentz Comment
  POM110260  Chlorogalum pomeridianum var. pomeridianum C. C. Bruce 1897-06 1839 Butte [No locality information provided] Comment
  CAS-BOT-BC252674  Chorizanthe membranacea A. A. Heller; H. E. Brown 1902-5-6 5465 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC252672  Chorizanthe membranacea Lowell Ahart 1980-7-20 2469 Butte Near the Suspension Bridge, Oroville 330 Comment
  SEINET10479752  Chorizanthe polygonoides Mary Susan Taylor 1980-5-31 Taylor 2756 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
  CHSC33127  Chorizanthe polygonoides var. polygonoides J. D. Jokerst 1981-5-11 1311 Butte Top of Doe Mill Ridge. 457 Comment
  CAS-BOT-BC252833  Chorizanthe polygonoides var. polygonoides M. S. Taylor 1975-4-26 510 Butte Ca. 500 yds E of Pentz-Magalia Hwy., ca. 1 mi. SE of Paradise 609 Comment
  CHSC9142  Chorizanthe stellulata L. W. Gray 1970-5-5 27 Butte Collected ca. 30 yds. N. of the Chico-Paradise Skyway ca. 7 mi. E. of the intersection of the Skyway with Highway 99 E. Was located ca. 5 ft. from the cliffs. Comment
  CHSC94030  Chorizanthe stellulata R. D. Fischer 2005-4-30 734 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on thin Tuscan mudflow of ridge top. 518 Comment
  UC101516  Chorizanthe stellulata Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC27572  Cicendia quadrangularis Robert Schlising 1978-4-18 3221 Butte Ca 2 mi S Tehama County line, at jct Broyles Road and Hwy 99; vernal pool. Comment
  SEINET12326986  Cicendia quadrangularis Unknown 1984-1 8 Butte Upper Bidwell park, ca 20 m N of Big Chico creek, ca, 6.7km NE of jct of Hwys 32 and 99.? 120 Comment
  CHSC38336  Cichorium intybus Vernon Oswald 1983-6-2 603 Butte Upper Bidwell Park, Chico, at the E end of Upper Park Rd. 207 Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CHSC94463  Cirsium douglasii var. breweri Lowell Ahart 2006-8-15 13188 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC426983  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville 1600 Comment
  POM304703  Cirsium occidentale var. venustum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 193 Butte Feather River Hwy. Comment
  CHSC6654  Cirsium vulgare M. MacArthur 1968-6-22 280 Butte Ca. 20 ft. from SE side of Big Chico Creek, near Esplanade bridge, Chico State College. 60 Comment
  JEPS115722  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CAS-BOT-BC228753  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  SEINET10866360  Cistus salviifolius Mary Susan Taylor 1975-5-6 Taylor 561 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Building; Riparian Woodland. 65 Comment
  CHSC24785  Clarkia arcuata C. E. Stopher 1976-4-14 20 Butte 2.4 km s of Forest Ranch. 579 Comment
  CHSC32913  Clarkia arcuata J. P. Smith; J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico. Comment
  POM37901  Clarkia arcuata C. C. Bruce 1898-03 1956 Butte Foothills [no specific locality given] Comment
  UCD104349  Clarkia biloba subsp. brandegeeae Joseph M. DiTomaso 1976-5-23 472 Butte Lake Oroville, peninsula at south end. 274 Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  UCR187079  Clarkia cylindrica Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 014 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CAS-BOT-BC164523  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte Near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 304 Comment
  JEPS115984  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC92946  Clarkia mildrediae subsp. lutescens L. P. Janeway; B. Castro, David Toren 2005-7-20 8500 Butte Northern High Sierra Nevada. Along Pine Cluster Ranch Road 1.1 km east of Concow Road; about 2.2 km northeast of upper end of Concow Reservoir. 677 Comment
  JEPS100226  Clarkia mildrediae subsp. lutescens Dean W. Taylor 2002-7-3 18219 Butte Forest Road 22N22 ca. 0.3 miles north of crossing of Fall River (ca. 1 air mile S of Walters Mine site) 1219 Comment
  CAS-BOT-BC163277  Clarkia mildrediae subsp. mildrediae H. Lewis; M. Lewis; F. Vasek 1950-6-30 756 Butte Hwy 24, 0.05 mi. S. of Arch Rock on Feather River Comment
  CAS-BOT-BC163356  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road 853 Comment
  CHSC89903  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along Miners Ranch Canal, situated on a bank, adjacent to the roadside. 304 Comment
  CAS-BOT-BC172529  Clarkia purpurea subsp. purpurea A. A. Heller 1912-5-23 10749 Butte Table Mountains Olive Ranch north of Oroville Comment
  CHSC1108  Clarkia purpurea subsp. quadrivulnera R. Carter 1964-5-1 75 Butte North Table Mt., 300' NW of where old Cherokee Rd. comes over S rim. 396 Comment
  CHSC112110  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2012-6-5 18165 Butte On the side of the small stream, on the bottom of Beatson Hollow, about 1-1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  RSA715677  Clarkia purpurea subsp. quadrivulnera L. Ahart 2005-5-28 11820 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UC246743  Clarkia purpurea subsp. quadrivulnera H. E. Brown Apr 15 1897-Apr 30 1897 212 Butte near Clear Creek 53 Comment
  SEINET10453161  Clarkia purpurea subsp. quadrivulnera Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4036 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET10906911  Clarkia purpurea subsp. quadrivulnera Heidi H. Schmidt 1993-6-15 Schmidt 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CAS-BOT-BC164783  Clarkia rhomboidea Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  SEINET3260809 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  UC1730248  Clarkia rhomboidea L. P. Janeway 1993-6-9 4372 Butte SE of Swayne Hill (slope above French Creek, along Road 22N34 1.8 mi S of the low water crossing) 621 Comment
  UC725286  Clarkia rhomboidea A. A. Heller 1937-5-31 Butte Yankee Hill Jarper Pass Comment
  UCD104992  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mile NW of Oak Point. 0.8 mile E of Transfer Ridge, E side of Breakneck Canyon. 1.5 miles N of West Branch Feather River. 1402 Comment
  CHSC87565  Clarkia unguiculata R. D. Fischer 2004-4-28 146 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on bluff edge of the Disk Golf Course, just east of the northern most bluff projection (a look out point). 365 Comment
  UC1586588  Clarkia unguiculata Vernon H. Oswald and Lowell Ahart 1991-5-31 4636 Butte drainage on ne side Sycamore Hill (along the roadbed on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation Area 76 Comment
  CHSC35704  Claytonia exigua subsp. exigua J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1560 Butte Opening in Yellow Pine F. Adjacent to road to Forbestown Resv. just S of its jct with the S. Fork of the Feather River. Comment
  CHSC12005  Claytonia palustris E. B. Copeland 1929-7-28 358 Butte Jonesville. Along spring creek in and out of water. 1500 Comment
  CHSC56064  Claytonia palustris L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3148 Butte Along West Branch Feather River, 1.5 mi along Humbug Summit Road north of Philbrook Road. 1584 Comment
  SEINET10929033  Claytonia parviflora Mary Susan Taylor 1981-5-7 Taylor 3631 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC101765  Claytonia parviflora subsp. parviflora Lowell Ahart 2009-5-15 15719 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
  CHSC41997  Claytonia parviflora subsp. parviflora Lowell Ahart 1975-3-27 725 Butte Along Swedes Flat Road, about 1/8 mile east of the bridge across Rocky Honcut Creek, northeast of Bangor. 304 Comment
  RSA469283  Claytonia parviflora subsp. parviflora L. Ahart, Peter Ahart 1984-6-10 4711 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SEINET11946901  Claytonia parviflora subsp. parviflora Unknown 1998-4-11 15 Butte Chico, Upper Bidwell Park about 1 km E of Horseshoe Lake, along gravel road that follows Chico Creek 104 Comment
  SFV11272  Claytonia perfoliata M. L. Vincent 1963-6-8 397 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CAS-BOT-BC440031  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1980-5-17 2276 Butte 1/2 mile south-east of Hurleton. 600 Comment
  CHSC56078  Claytonia rubra subsp. rubra L. P. Janeway; C. A. Janeway 1987-4-20 2006 Butte Near Hwy 32, between the road into Soda Springs Campground and Chico Creek. 1143 Comment
  JEPS121920  Claytonia rubra subsp. rubra Lowell Ahart 2014-7-10 19633 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 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
  CHSC28458  Clematis ligusticifolia R. Schlising; M. Banchero, R. Banchero 1979-10-13 3498 Butte Along slough at Sacramento River, at very end of Sacramento Avenue. W of Chico. Comment
  JEPS88526  Clintonia uniflora Lowell Ahart 1996-6-5 7680 Butte about 7 air mi e of Feather Falls (about 1 mi n of Golden Trout Crossing, e of bridge across South Fork of the Feather River); South Fork Feather River 914 Comment
  SEINET12268888  Collinsia bicolor Unknown 5 s.n. Butte no further locality Comment
  CHSC76961  Collinsia heterophylla Ida Ryan 1893-5-1 Butte Big Chico Creek. Comment
  CHSC44237  Collinsia parviflora V. Oswald; L. Ahart 1988-7-13 3573 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  CHSC82275  Collinsia sparsiflora var. collina J. Marr 1988-3-19 12 Butte 2.5 mi WNW of Cherokee Rd on Table Mtn, 6 mi N of Oroville. 304 Comment
  JEPS6368  Collinsia tinctoria Rimo Bacigalupi & Richard Hauke 1954-7-15 4700 Butte 0.5 mi s and below Nimshew (along flank of Butte Canyon, on the Humbug (Nimshew) rd); Butte Canyon 701 Comment
  CHSC47066  Collomia grandiflora R. A. Schlising; P. Broyles 1988-7-9 4588 Butte Head of Concow Creek at Concow Meadows, s of Flea Valley. Edge of meadow and forest. 1097 Comment
  CHSC34217  Conium maculatum M. S. Taylor 1981-5-28 3806 Butte Along River Rd, near bridge over slough, ca. 5 mi sw of Chico. 36 Comment
  SBBG128102  Cordylanthus pilosus subsp. hansenii L. Ahart 2010-9-12 17150 Butte just above the high water line of Lake Oroville, ca. 150 yards N of the S Fork of the Feather River, ca. 50 yards E of Sucker Crk, ca. 0.25 mi NW of the Ponderosa Dam 243 Comment
  RSA412331  Cordylanthus pilosus subsp. pilosus H. F. Copeland 1928-8-14 382 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC50805  Cordylanthus pilosus subsp. trifidus Vernon Oswald; Mary Bailey 1990-8-2 4428 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CHSC81486  Cornus nuttallii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  CAS-BOT-BC209588  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  UC1562304  Cornus sericea subsp. sericea Vernon Oswald and Lowell Ahart 1990-7-19 4365 Butte ca. 3 mi. e. Philbrook Reservoir (s. side Philborook Creek, ca. 0.3 mi. w. of Plumas Co. line); Philbrook Creek 2011 Comment
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 Comment
  CHSC92592  Cornus sessilis L. P. Janeway 2005-5-17 8392 Butte Northern High Sierra Nevada. Plumas National Forest; along unnamed creek 0.5 km west of Cedar Creek, 1.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  CDA4039  Coronilla varia L. Ahart 2006-6-24 12862 Butte On the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Comment
  JEPS106219  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  UC1562396  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  SEINET10565419  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E N/NE Sec. 24. Pennington Quad. Graylodge Wildlife Refuge, vicinity of check-in station, SW jct of Pennington & Rutherford Rds., ca. 12 mi SW of Gridley. 21 Comment
  CDA1914  Cortaderia selloana L. Ahart 2000-9-2 8678 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  RSA0125552  Corydalis caseana Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  UC1499975  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte 1 mi. e. Butte Meadows (small stream that flows into Butte Meadows) 1450 Comment
  CHSC100488  Cotoneaster pannosus Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS103436  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  UCD101854  Crassula connata Michael A. Vincent; Ethan H. Freid 1998-4-6 8126 Butte Table Mountain. Comment
  SEINET516423  Crassula saginoides Lowell Ahart 1974-1 394 Butte Normal size plants, growing on damp soil on the bottom of a small vernal pool, peter Ahart Ranch, about 1 1/2 mi. N and 2 mi. E of Honcut, about 12 mi S of Oroville. 46 Comment
  CHSC38402  Crassula tillaea Vernon Oswald 1983-3-14 173 Butte Upper Bidwell Park, Chico, along the hiking trail, ca. 1600 ft w of the power lines. 195 Comment
  CHSC90954  Crassula tillaea Lowell Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC4340  Crataegus monogyna Carl Pejsa 1966-5-18 30 Butte Bidwell Park Forestry Station. Comment
  OBI16623  Crepis occidentalis H. F. Copeland 1932-7-24 Butte Near Butte Crk meadow. Vicinity of Jonesville, Lassen Natl Forest Comment
  JEPS120499  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 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. Comment
  SD8855  Crocidium multicaule R. M. Austin 1883-1 Butte Comment
  CHSC35117  Crucianella angustifolia L. Ahart 1972-6-1 Butte Honcut. Comment
  CHSC51010  Crucianella angustifolia Lowell Ahart 1990-7-4 6550 Butte About 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS98714  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  RSA755640  Crucianella angustifolia L. Ahart 2009-5-15 15706 Butte East side of Big Chico Creek, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  RSA337388  Crucianella angustifolia L. Ahart 1984-6-8 4681 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge road, 3 miles NE of Ponderosa Dam, 3miles N of Forbestown. 500 Comment
  SEINET10500613  Crucianella angustifolia Lowell Ahart 1984-6-8 Ahart 4681 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge Rd, ca. 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown; Yellow Pine Forest. 500 Comment
  CHSC36551  Crypsis schoenoides L. Ahart 1982-7-10 3672 Butte On the bottom of a duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  SEINET10497263  Cryptantha affinis Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4184 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  CHSC35060  Cryptantha intermedia R. A. Schlising 1981-6-13 4081 Butte E part of county, along Milsap Bar Road, 2.7 miles S of its junction with Bald Rock Road near Brush Creek. 975 Comment
  SEINET10935928  Cryptantha intermedia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4742 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
  CHSC33415  Cryptantha torreyana R. A. Schlising 1980-7-16 3915 Butte Streamside, Butte Creek, several miles NE of Butte Meadows and adjacent to large meadow W of Cherry Hill Campground. Comment
  CHSC3601  Cupressus macnabiana Gerry Carrauthers 1966-3-6 44 Butte Ca. 1/4 mi N.E. of Magalia (city) train depot on Cautolenc Road. N. of city of Paradise. Comment
  UCD133580  Cupressus macnabiana M. Vincent 1961-3-27 14 Butte One mile north of Magalia on rocky bluff. 914 Comment
  SEINET10966021  Cupressus macnabiana Mary Susan Taylor 1975-5-9 Taylor 568 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
  CHSC27180  Cupressus sempervirens M. MacArthur 1968-6-22 272 Butte Ca. 20 ft. NW EP bld., Chico State College. 60 Comment
  CHSC60974  Cuscuta californica var. californica Lowell Ahart 1993-6-20 7001 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC94484  Cuscuta californica var. californica Lowell Ahart 2006-7-16 12959 Butte In the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CDA42920  Cuscuta campestris L. Ahart 2012-8-22 18423 Butte On the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Central House Road, about 2 miles (air) northwest of Honcut. Comment
  UC1191662  Cuscuta obtusiflora var. glandulosa Herbert L. Mason and Verne Grant 1946-8-14 13021 Butte Sacramento Outing Club Butte Sink Comment
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  JEPS108864  Cuscuta pentagona Lowell Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 54 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
  CHSC88575  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City. 1417 Comment
  CHSC44464  Cyclospermum leptophyllum Lowell Ahart 1988-5-15 6003 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC27265  Cynodon dactylon P. Moyer 1972-6-5 215 Butte CSUC Campus. E. of L.S. Bridge. 60 Comment
  CHSC66173  Cynodon dactylon Vernon H. Oswald; Lowell Ahart 1996-5-27 7668 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS116005  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, 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
  SEINET7072728  Cynosurus echinatus A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles north of Oroville on Table Mountain Boulevard. UTM Zone 10, 620857mE, 4378681mN. Coordinate datum: NAD 27.) Comment
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  JEPS113689  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC38899  Cyperus difformis Vernon Oswald 1983-7-8 839 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  JEPS113500  Cyperus difformis Lowell Ahart 2007-7-8 14268 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  POM219533  Cyperus difformis H. F. Copeland 1923-8-13 548 Butte Nelson. Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC114602  Cyperus eragrostis Ira L. Wiggins 1959-9-20 34640 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  JEPS120107  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 -A Butte Lawn on the south side of the path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC114604  Cyperus eragrostis James D. Jokerst 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, ca 3 mi NW of the Oroville Quincy Hwy, 700 Comment
  POM185581  Cyperus eragrostis E. B. Copeland 1903-7-27 3490 Butte Chico. Comment
  SEINET10466871  Cyperus eragrostis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5157 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC37103  Cyperus erythrorhizos L. Ahart 1982-9-12 3795 Butte On banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  UCD141049  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  UCD141051  Cyperus erythrorhizos P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unkown. Comment
  CHSC42844  Cyperus flavescens John Thomas Howell 1961-9-22 Butte Arch Rock Tunnel, along Highway 70, about 20 miles north-east of Oroville. Comment
  CHSC94647  Cyperus flavescens Lowell Ahart 2006-9-28 13378 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS95884  Cyperus flavescens Lowell Ahart 1999-8-13 8143 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC111614  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Common. Agricultural. 31 Comment
  JEPS98392  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte S end of the large dredge pond, on the W side of the Feather River between Palm Avenue and Vance Avenue Oroville Wildlife Area 28 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC102509  Cyperus niger Lowell Ahart 2009-8-3 16257 Butte Along a small drainage about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC43528  Cyperus niger Lowell Ahart 1979-9-8 2019 Butte Along the edge of old Highway 40, about 1/2 mile west of Oroville Dam, about 6 miles east of Oroville. 167 Comment
  CHSC51282  Cyperus niger Lowell Ahart 1990-10-21 6639 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
  JEPS98603  Cyperus niger Lowell Ahart 2000-6-17 8482 Butte In seeps, ca 1/4 mile NE of Kunkle Reservoir, E of the Pentz Magalia Road, ca 2 miles S of Paradise. 548 Comment
  UC1100646  Cyperus niger Herbert L. Mason and Verne Grant 1946-9-27 13141 Butte 3 mi. w. Biggs Comment
  UCD141194  Cyperus niger L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CDA38967  Cyperus niger L. Ahart 1999-9-21 8274 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SEINET228551  Cyperus niger Lowell Ahart 1981-9-6 3123 Butte Rest area just a little S of the Arch Rock Tunnel on Highway 70 about 4 miles N of Pulga. Comment
  CHSC45155  Cyperus squarrosus Lowell Ahart 1974-7-1 504 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC99002  Cyperus squarrosus Lowell Ahart 2008-5-30 14797 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET7582970 Image available Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  RSA263830  Cyperus strigosus J. T. Howell 1959-9-20 34636 Butte Eastern outskirts of Oroville. 61 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
  SEINET10833641  Cystopteris fragilis Mary Susan Taylor 1981-5-13 Taylor 3694 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC30519  Dactylis glomerata Sandra C. Morey 1980-4-19 67 Butte Paradise. Clark Road, ca. 2 mi. s of jctn with Pearson Road. Roadside next to field. 601 Comment
  JEPS120086  Dactylis glomerata Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC36092  Danthonia californica var. americana R. A. Schlising; R. Preston 1982-7-16 4321 Butte NE part of county, E of Stirling City at Crane Valley. At edge of Balsam Creek. 1584 Comment
  CHSC68914  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte Along a stream, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  UC600745  Danthonia californica var. americana H. F. Copeland 1932-7-17 Butte Jonesville; across from cabin Comment
  SEINET10454791  Daucus carota Mary Susan Taylor 1982-8-16 Taylor 4986 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  SEINET10536226  Delphinium Mary Susan Taylor 1976-3-9 Taylor 1022 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CAS-BOT-BC8796  Delphinium gracilentum Lowell Ahart 1980-5-4 2200 Butte Near Hurlton Comment
  UC246732  Delphinium hansenii subsp. hansenii Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2076 Butte near Chico Comment
  CAS-BOT-BC10302  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Along Bloomer Hill Road, about 0.75 mile west of the Oroville Quincy Highway, about 15 miles NE of Oroville 425 Comment
  CAS-BOT-BC10303  Delphinium hesperium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC10305  Delphinium hesperium Mrs. H. C. Cantelow 1940-5-10 4254 Butte Bidwell Bar Bridge Comment
  CHSC24887  Delphinium nudicaule D. J. Funk 1976-4-11 7 Butte Ca. 15 ft. sw of Little Chico Creek. 365 Comment
  CHSC57138  Delphinium nudicaule R. A. Emmrich 1975-4-20 80 Butte Cohasset Hwy., 10 yds w of roadside, ca. 6 mi n of Chico. 121 Comment
  CHSC48689  Delphinium patens subsp. patens Vernon Oswald 1985-5-2 1745 Butte Concow Rd. 1.1 mi sw of its jct. with Ponderosa Way. 853 Comment
  UC118572  Delphinium patens subsp. patens Mrs. R. M. Austin 1883-3-1 Butte Little Chico Comment
  CHSC52508  Delphinium variegatum Patricia Collins 1981-4-22 11 Butte Field near the bank of Singer Creek, ca. 21 km nw of Chico. Intersection of Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  CHSC53167  Delphinium variegatum Steve Alverez 1980-3-24 20 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
  CHSC1463  Delphinium variegatum subsp. variegatum Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC77438  Delphinium variegatum subsp. variegatum Tim Stofer 1997-4-13 12 Butte At the shooting range 100 yards from the head of the South Rim Trail off South Park Dr. in Upper Bidwell Park. 76 Comment
  UC726608  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia Comment
  POM218974  Deschampsia cespitosa E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1750 Comment
  UC600596  Deschampsia cespitosa H. F. Copeland 1932-7-24 Butte Butte Creek Meadows Jonesville; , Butte Creek Meadows Comment
  SEINET10507361  Deschampsia cespitosa Mary Susan Taylor 1978-6-24 Taylor 1663 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  JEPS107775  Deschampsia danthonioides Lowell Ahart 2005-5-2 11768 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS117703  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  SEINET10966580  Deschampsia danthonioides A. Arthur Heller 1914-5-13 Heller 11399 Butte Between Durham & Nelson. Comment
  CHSC112523  Deschampsia elongata B. Castro 2012-10-18 1990 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 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
  CHSC13505  Dicentra formosa A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. 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
  SEINET12089316  Dicentra formosa J. P. Kroessig 1977-1 17 Butte SW shore of Magalia Reservoir, ca 0.5 mi SE of Magalia. Paradise Quadrangle, 15'. SE 1/4 of Sect 707 Comment
  UCSC000299  Dicentra formosa subsp. formosa J. De Laive 1968-4-5 s.n. Butte Brush Creek Comment
  CHSC19655  Dicentra peregrina K. R. Stern 1966-5-14 Butte Chico. Comment
  CHSC642  Dicentra uniflora V. Holt 1935-5-5 Butte Butte Meadows. 1219 Comment
  JEPS98294  Dichanthelium acuminatum subsp. fasciculatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  UC421798  Dichelostemma capitatum Francis Ramaley 1917-5-6 11206 Butte 3 of Chico Comment
  UCD139228  Dichelostemma capitatum Richard Sannar 1982-3-16 24 Butte along State Route 70, 1 mile north of intersection with Palermo Road, south of Oroville. Comment
  CHSC3633  Dichelostemma capitatum subsp. capitatum Alice L. Stoll 1966-2-14 2 Butte 7 miles N. E. of First and Main Streets, Chico. Approximately 50 yds. W. of road, Upper Bidwell Park. Comment
  CHSC90581  Dichelostemma capitatum subsp. capitatum Joseph Silveira 1982-4-17 11 Butte 275 m east-northeast of the old dump site and 0.8 km north of Little Chico Creek, 1.9 km east of Chico. 105 Comment
  UCD139200  Dichelostemma capitatum subsp. capitatum L. Ahart 1977-3-28 1229 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC483252  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1970-2-25 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC37709  Dichelostemma multiflorum M. S. Taylor 1980-4-27 2570 Butte N side of Humbug Rd, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca. 7 mi. e of Chico. 121 Comment
  CHSC96556  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  RSA21172  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  HSC66210  Dichelostemma multiflorum Jane A. Rogers 1979-4-21 20 Butte S side of Neal Rd., 0.25 mi. W of intersection of Hwy. 99 and Neal Rd. 61 Comment
  SEINET10472709  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2573 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  HSC38019  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2479 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CHSC31657  Dichondra donelliana L. Ahart 1975-5-3 747 Butte Near North Honcut Creek. On Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41983  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC150503  Diplacus grandiflorus Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  SEINET13751508 Image available Diplacus grandiflorus Margaret J. Williams, Wayne Roderick 1984-1 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CAS-BOT-BC153219  Diplacus kelloggii A. A. Heller; H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek) Comment
  CHSC1774  Diplacus kelloggii H. Summers 1929-4-21 Butte Butte Creek. Comment
  SEINET8360328  Diplacus kelloggii Unknown 1985-4-8 2220 Butte above Hwy. 70 2.3 mi SW of Pulga Rd. 610 Comment
  CHSC44802  Diplacus layneae R. Banchero 1980-6-16 238 Butte Along Humbolt Rd 1.9 mi SW of the jct with the Skyway, Ca 3.1 mi NE of the jct of Humbolt Rd and Hwy 32. 1414 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
  CAS-BOT-BC154034  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte West slope of the Sierra near Forest Ranch 822 Comment
  CHSC23585  Diplacus torreyi Nancy Mosman 1971-7-3 58 Butte In meadow along n side of Humboldt Road ca. 0.3 mi e of Butte meadows Ranger Station. 1371 Comment
  CAS-BOT-BC154032  Diplacus torreyi A. A. Heller 1914-6-24 s.n. Butte West Branch 1036 Comment
  SEINET8370227  Diplacus tricolor Christine C. Lorain 1995-4-30 2270 Butte just E of Floral Road in the northern part of Chico. 61 Comment
  CDA34546  Dittrichia graveolens L. Ahart 2007-10-3 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. Comment
  CHSC109355  Dittrichia graveolens T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. On the west shoulder of Bardees Bar Road approximately 0.5 road km northeast of intersection of Bardees Bar and Big Bend Roads. 657 Comment
  CAS-BOT-BC136239  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CHSC31341  Dodecatheon hendersonii Diane M. Reilly 1980-3-21 2 Butte NW slope ca. 1/2 mi n on dirt road, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 518 Comment
  CHSC67293  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1955 Butte Peter Ahart Ranch on bluff top of the North Fork Honcut Creek. Growing within 0.2-0.3 mi of #1952 and 1953. Comment
  SBBG17075  Dodecatheon hendersonii M. Vincent 1961-3-26 38 Butte 1 mi N of Cherokee on the Cherokee Rd 762 Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  CHSC31556  Downingia cuspidata L. Ahart 1978-5-12 1713 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET12326987  Downingia cuspidata Unknown 1984-1 15 Butte Oroville, Small drainage area crossing Cottonwood Rd., S side, 3.2 mi E of its junction with State 46 Comment
  CHSC181  Downingia insignis V. Holt 1935-5-15 Butte Oroville road. 76 Comment
  CHSC76937  Downingia insignis Margie Collins 1894-6-1 Butte Nord? Comment
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  CHSC35015  Draba verna var. aestivalis R. E. Preston 1982-3-20 192 Butte Along trail to Bear Ranch Creek falls, at Hwy 70, ca. 22 mi nne of Oroville. 463 Comment
  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
  UCD123991  Drosera rotundifolia Barry Rice 2011-7-20 BR 110709 Butte Mallory Meadow. 1350 Comment
  SEINET10448016  Drosera rotundifolia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4756 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CAS-BOT-BC70854  Dryopteris arguta Lowell Ahart 1983-7-24 4207 Butte Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  JEPS110220  Dryopteris arguta Lowell Ahart 2006-5-19 12634 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CHSC30036  Dudleya cymosa L. Ahart 1980-5-25 2319 Butte About 1 mile e of the Bangor-Oroville Hwy, along Swedes Flat Rd, near Bangor. 320 Comment
  JEPS124155  Dysphania botrys Lowell Ahart 2015-11-7 20617 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
  CHSC88925  Echinochloa colona Lowell Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  JEPS120722  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CAS-BOT-BC197100  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 a Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC71268  Echinochloa crus-galli Lowell Ahart 1998-7-1 8031 Butte On the margins of a stream, 50 yards north of a poor east west fence, about 3/4 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 350 Comment
  JEPS96001  Echinochloa crus-galli Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CDA2012  Echinochloa crus-galli var. crus-galli G. D. Barbe, T. C. Fuller 1977-9-2 2337 Butte Rice Experiment Station, Biggs. 0 Comment
  CAS-BOT-BC208565  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station Comment
  POM313038  Echinodorus berteroi H. L. Mason, Verne Grant 1946-8-7 12989 Butte Gridley road N of Butte Sink. Comment
  CHSC113216  Elatine Lowell Ahart 2014-4-26 19411 A Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC113219  Elatine Lowell Ahart 2014-4-26 19411 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC113361  Elatine Lowell Ahart 2014-4-25 19398 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  JEPS127222  Elatine Lowell Ahart 2016-8-5 21259 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  JEPS120984  Elatine ambigua Lowell Ahart 2013-6-5 18723 Butte About 30 yards N of Lower Honcut road, about 1.75 miles W of Honcut. Comment
  CHSC42383  Eleocharis bella Lowell Ahart 1987-5-27 5694 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1562357  Eleocharis bella Lowell Ahart and Vern Oswald 1990-7-5 6650 b Butte 2 mi NE of Snag Lake (small meadow 1/2 mi N of Butte Creeek house) 1828 Comment
  CAS-BOT-BC113451  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Ca 1/2 mi N of Kinkle Res., ca. 2 mi S of Paradise. 600 Comment
  CHSC110240  Eleocharis bolanderi L. P. Janeway 2012-6-2 10833 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC78294  Eleocharis bolanderi Lowell Ahart 2000-7-7 8560 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC113583  Eleocharis decumbens Lowell Ahart 1980-7-4 2459 Butte Along Forbestown Road Comment
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC112785  Eleocharis macrostachya John Thomas Howell 1959-9-20 34660 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC112790  Eleocharis macrostachya Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET13711140  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8481 Butte E of Pentz Magalia Rd. 2 Mi. S of ParadiSE (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CHSC33713  Eleocharis pachycarpa J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1336 Butte N of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  SEINET7586858 Image available Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville. 1750 Comment
  POM144780  Eleocharis parishii E. B. Copeland 1903-5-30 3280 Butte Chico. Comment
  UCD49734  Eleocharis quinqueflora L. Ahart 1970-4-4 40 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 45 Comment
  CDA38985  Eleocharis quinqueflora L. Ahart 2000-5-27 8405 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  RSA716567  Eleocharis quinqueflora L. Ahart 2000-6-27 8530 Butte On the north side of Bean Creek Road, about 0.25 mile southeast of Little Bald Rock, about 1.25 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville 1067 Comment
  JEPS124328  Eleocharis radicans Lowell Ahart 2015-10-20 20567 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET3441890  Eleocharis suksdorfiana Unknown 2000-7-5 8552 Butte Stirling City, Stirling City, about 4.5 miles north, about 1 mile south of Inskip, about 100 yards west of the skyway 1310 Comment
  CHSC80887  Elodea canadensis Lowell Ahart 2001-7-6 8883 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord bend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC110140  Elymus caput-medusae L. P. Janeway 2012-4-29 10807 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.3 km west of the powerlines. 125 Comment
  CAS-BOT-BC227298  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  SEINET10963911  Elymus glaucus Lowell Ahart 1988-6-21 Ahart 6052 Butte On dry rocky disturbed soil, along Poe Power House Road, about 1/2 mile north of the Poe Power House, about 1 1/2 miles SE of Jarbo Gap. Yellow Pine Forest 366 Comment
  JEPS106202  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 10959 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  SEINET10791331  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 Ahart 6165 Butte Parish's Wheatgrass. On dry rocky soil, on a rocky outcrop south of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  CHSC9342  Elymus macounii Marilyn Lee 1968-5-3 154 Butte South side of Coutolene Rd., ca. 1 mile N. of Magalia. Comment
  CAS-BOT-BC234102  Elymus multisetus Lowell Ahart 1977-6-16 1506 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC234104  Elymus multisetus Lowell Ahart 1983-6-26 4114 Butte Along Ponderosa Way, ca. 1/8 mi. E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 mi. NE of Oreoville, Sierra Nevada 500 Comment
  RSA786286  Elymus multisetus P. Reisentz 1979-5-13 s.n. Butte On State Highway 70, 9 miles south of Butte- Plumas County Line Comment
  CHSC28562  Elytrigia intermedia subsp. barbulata M. S. Taylor 1978-7-21 1835 Butte Big Bald Rock. Ca. 2 mi w of Lake Madrone. 997 Comment
  CHSC43201  Elytrigia intermedia subsp. intermedia Robert Banchero 1981-7-28 633 Butte Jones Meadow, ca 5 air mi e of Inskip. 1842 Comment
  CHSC1467  Enemion occidentale M. Anthony 1953-3-9 Butte Forest Ranch. 548 Comment
  CHSC43258  Epilobium M. Banchero; R. Schlising 1979-9-2 29 Butte Margin of large meadow sloping to Butte Creek, 8.1 mi NE jct Hwy 32, on Humboldt Road. Comment
  SEINET10453189  Epilobium adenocaulon var. occidentale Mary Susan Taylor 1978-7-19 Taylor 1745 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC45760  Epilobium brachycarpum Steven Triano 1988-9-18 250 Butte Ca 70 ft w of Hwy. 32 and 20.3 mi n of its jct. with Hwy. 99. 984 Comment
  UC203661  Epilobium brachycarpum A. A. Heller 1914-8-20 11689 Butte along creek about 5 mi s Pentz; Dry Creek Comment
  UCR219098  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 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
  CHSC12074  Epilobium canum subsp. latifolium R. N. Bowman 1971-10-10 55 Butte At the fern banks, Bidwell Park, Chico. On cliffs overlooking Big Chico Creek. 64 Comment
  CHSC25258  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1977-6-26 1375 Butte In tiny creek along s side of Ponderosa Way, ca. 2 mi e of Cohasset. 609 Comment
  CHSC28527  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1979-8-4 2180 Butte Along Hwy 70 in ditch, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  UCD105646  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-10-11 3863 Butte 1/10 mile SE of HQ, Graylodge Wildlife Refuge, ca. 12 miles SW of Gridley. 35 Comment
  CHSC38561  Epilobium cleistogamum Vernon Oswald 1983-6-3 631 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the diversion channel. 79 Comment
  CHSC75291  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte Along a drain ditch in a pasture field, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC111605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte The south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  CHSC13710  Epilobium densiflorum M. S. Taylor 1974-10-11 333 Butte On sandbar in Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. Comment
  UCD169605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte About 3/4 mile north and 2 1/2 miles east of Honut, about 13 miles southeast of Oroville. 39 Comment
  UC204450  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico Meadows 1219 Comment
  CHSC109575  Epilobium minutum L. P. Janeway 2012-6-7 10866 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
  CHSC92730  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  RSA712800  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  UC478494  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte The Summit Jonesville 2000 Comment
  SEINET10453021  Epilobium obcordatum Mary Susan Taylor 1979-7-21 Taylor 2149 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC28716  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  CHSC90982  Epilobium torreyi Lowell Ahart 2005-5-11 11795 Butte Swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  CHSC42397  Epipactis gigantea Lowell Ahart 1987-6-9 5729 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC20899  Equisetum arvense M. S. Taylor 1975-8-31 891 Butte On Ernies Island, in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 609 Comment
  SDSU3946  Equisetum hyemale subsp. affine E. B. Copeland 1929-6-6 734 Butte Comment
  SEINET10562573  Eragrostis cilianensis Lowell Ahart 1988-7-24 Ahart 6134 Butte On dry bare disturbed soil, along the edge of La Porte Road, about 2 1/2 miles NE of Bangor. Foothill Woodland. 274 Comment
  CHSC66857  Eragrostis hypnoides Vernon H. Oswald 1996-9-30 8292 Butte Northern Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. On the margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  JEPS114995  Eragrostis hypnoides Lowell Ahart 2007-11-3 14559 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  JEPS115033  Eragrostis hypnoides Lowell Ahart 2007-10-31 14522 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CHSC34778  Eragrostis mexicana subsp. virescens L. Ahart 1981-11-6 3229 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. Along edge of the road. 35 Comment
  CHSC69738  Eragrostis mexicana subsp. virescens Lowell Ahart 1997-10-24 7939 Butte About 20 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC102726  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 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
  JEPS115255  Eremocarpus setiger Lowell Ahart 2009-6-30 15956 Butte West of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC29982  Eremogone cliftonii Lowell Ahart 1980-5-29 2362 Butte 2.5 miles NE of Mountain House, short distance from Oroville-Quincy Highway. Along edge of dirt road. 1100 Comment
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  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
  CAS-BOT-BC131513  Ericameria arborescens Lowell Ahart 1986-10-16 5406 Butte Along Ponderosa Way, about 1/2 mile south of Lumpkin Road, about 3 miles south-west of Feather Falls 609 Comment
  CHSC110126  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the rail-road tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Knoll flattened in mining rock long ago? 91 Comment
  CHSC58251  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte Along the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 1/2 miles west of Oroville Dam. 76 Comment
  CAS-BOT-BC300689  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 1800 Comment
  SEINET10473744  Erigeron inornatus Lowell Ahart 1983-8-16 Ahart 4284 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  POM193097  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Butte County: Jonesville. 1550 Comment
  UC127750  Erigeron inornatus var. inornatus Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  POM180882  Erigeron philadelphicus H. F. Copeland 1923-4-21 870 Butte Canyon of Chico Creek Comment
  JEPS106154  Eriochloa acuminata var. acuminata Lowell Ahart 2004-9-14 11400 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  CHSC42356  Eriodictyon californicum Lowell Ahart 1987-5-11 5612 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CAS-BOT-BC259399  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  SEINET4854949  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville. 2000 Comment
  RSA781347  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Humboldt road. Comment
  CHSC105794  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam. 243 Comment
  CHSC63709  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte Along both sides of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 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
  CHSC23373  Eriogonum roseum Lowell Ahart 1975-9-4 981 Butte Growing along Ponderosa Way, two miles southwest of Feather Falls. Ca 1 1/2 mi NW of the Ponderosa Dam. 396 Comment
  UC600500  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Colby Canyon Jonesville, Colby Canyon 1524 Comment
  SEINET11934607  Eriogonum spergulinum var. reddingianum L. P. Janeway, Janeway, C. A. 1986-1 1857 Butte Jonesville quad (15'), near mdw of upper Willow creek. Logging landing of soft soil 1951 Comment
  CHSC28939  Eriogonum ursinum var. ursinum M. S. Taylor 1978-7-18 1698 Butte On top of Humboldt Peak. 2154 Comment
  CHSC100482  Eriogonum vimineum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CDA22694  Eriogonum vimineum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  SEINET10474638  Eriophyllum lanatum Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5519 Butte outcrop, 0.6 mi S of Coyote Gap, on open knoll at loop in French Creek Road, ca. 25 air mi NE of Oroville. Comment
  CAS-BOT-BC308149  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1977-5-20 1146 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC308158  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  CAS-BOT-BC308170  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  POM358062  Eriophyllum lanatum var. grandiflorum M. M. Boney 1897-1 s.n. Butte [Unspecified] Comment
  UC202360  Eriophyllum lanatum var. grandiflorum H. M. Hall 1914-7-1 9813 Butte near Jonesville (n Butte Co.); Sierra Nevada Mountains 1615 Comment
  CDA34625  Erodium botrys L. Ahart 2009-4-17 15561 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CAS-BOT-BC40750  Erysimum capitatum Lowell Ahart 1987-5-9 5589 Butte Along Pulga Road, about 0.25 mile west of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC33186  Erysimum capitatum var. capitatum R. E. Preston 1981-6-2 78 Butte Rocky Ridge, ca. 3.2 km ne of Lake Concow, ca. 32 km n of Oroville. 1025 Comment
  CHSC102395  Erythranthe cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest 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. 266 Comment
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC110632  Erythranthe glaucescens Christopher T. Ivey 2013-5-9 380 Butte Pulga Road, near intersection with Hwy. 70. 490 Comment
  CHSC44685  Erythranthe glaucescens R. Banchero 1980-3-27 83 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  CHSC7109  Erythranthe glaucescens James M. Watson 1969-4-4 8 Butte 4.3 mi e of upper Bidwell Park entrance 50 yds. n of road. 213 Comment
  CHSC87424  Erythranthe glaucescens R. D. Fischer 2004-3-20 114 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along drainage on Guardian Trail. UTM: 10609595E 4405947N. 384 Comment
  CHSC90149  Erythranthe glaucescens Lisa J. Newsum 1984-4-19 17 Butte Bidwell Heights Road 3/4 mi from junction with Hwy 32, east of Chico. 441 Comment
  CHSC90151  Erythranthe glaucescens Kevin J. Kearns 1980-4-24 10 Butte About 50 yds south of Butte Creek and 300 yds west of the Covered Bridge (Covered Bridge is 35 yds southeast of intersection of Humbug and Honey Run Road), 6.5 mi east-southeast of Chico. 140 Comment
  CHSC93508  Erythranthe glaucescens Lowell Ahart 2006-5-10 12614 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC110638  Erythranthe guttata Christopher T. Ivey; Jenn Coughlan 2013-5-17 381 Butte Centerville Rd. about 2 km NE of Honey Run bridge. W side of road. 115 Comment
  CHSC113154  Erythranthe guttata Lowell Ahart 2013-11-13 19249 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC38701  Erythranthe guttata Vernon Oswald 1983-6-3 625 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion channel. 79 Comment
  CHSC84402  Erythranthe guttata Lowell Ahart 2003-7-23 10436 Butte On cliffs and along a road ditch, at the generator, Forbestown Reservoir, about 4 1/2 miles (air) northeast of Forbestown. 554 Comment
  SD4667  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville, in wet meadow 1500 Comment
  CHSC44816  Erythranthe pulsiferae R. Banchero 1980-6-12 208 Butte Along Hwy 32 ca 3.9 mi S of its jct with Humbolt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  CHSC33578  Erythronium multiscapideum M. S. Taylor 1981-4-14 3535 Butte S side of Ponderosa Way. Ca. 1.10 mi n of its jct with Concow Rd, ca. 2 mi n of Lake Concow, ca. 3/4 mi s of Flea Mt. 1036 Comment
  CAS-BOT-BC504529  Erythronium multiscapideum Lowell Ahart 1982-4-8 3272 Butte Along Swedes Falt Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  CAS-BOT-BC502809  Erythronium purpurascens Clarence R. Quick 1952-6-30 52 -103 Butte Ridge top, Big Bar Mountain east of Pulga Comment
  CHSC33140  Eschscholzia caespitosa J. D. Jokerst 1979-3-20 1155 A Butte Table Mountain. Top of North Table Mt, above the waterfalls at the west edge of the mountain S fork of Coal Creek Canyon. Comment
  CHSC38577  Eschscholzia caespitosa Vernon Oswald 1983-2-23 94 Butte Upper Bidwell Park, Chico, along Yahi Trail 400 ft w of Salmon Hole Parking Area. 146 Comment
  UC855193  Eschscholzia californica A. A. Heller 1938-4-23 15052 Butte on Feather River Hwy near Yankee Hill road (w side of summit) Comment
  UCD95290  Eschscholzia californica Curtis Clark 1975-6-25 503 Butte Butte Canyon Road, 0.9 mile east of junction of Manzanita and Centennial Avenue in Chico. Comment
  CHSC1203  Eschscholzia californica subsp. californica M. Anthony 1962-4-20 Butte Bidwell Park. 60 Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  CHSC36181  Eschscholzia lobbii John J. Krajanowski 1981-4-14 13 Butte Beatson Hollow, 3/4 mi w of Cherokee Road and 6 mi n of Oroville. 316 Comment
  CHSC38579  Eschscholzia lobbii Vernon Oswald 1983-2-16 83 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.4 mi e of the power lines. 304 Comment
  HSC43094  Eschscholzia lobbii Maralyn O'Meara 1974-4-20 297 Butte Table Mtn. 305 Comment
  CAS-BOT-BC419505  Eschscholzia lobbii A. A. Heller 1914-3-7 11188 Butte Hills 8 miles north of Oroville Comment
  SEINET12093970  Eschscholzia lobbii R. A. Schlising 1978-1 3224 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE Comment
  CHSC48616  Eucalyptus rudis Vernon Oswald 1987-7-4 3089 Butte Rancho Aquas Frias. Nelson West Rd. at 7-Mile Lane, between Chico and Butte City. 30 Comment
  CHSC54474  Euonymus occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4736 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Jordan Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  RSA70383  Euphorbia ocellata var. ocellata F. W. Peirson 1923-7-21 3760 Butte north of Chico. Comment
  SD239722  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley: Palermo Road 0.3 mi east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  RSA0106562  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horeshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CHSC42756  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC46920  Euthamia occidentalis Lowell Ahart 1977-9-20 1570 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC20093  Fatsia japonica M. S. Taylor 1975-4-8 450 Butte On ne side of Administration Building, California State University, Chico. 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
  CAS-BOT-BC77692  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  SD10094  Frangula rubra E. B. Copeland 1931-7-28 Butte Jonesville; dry ridge west of North Willow Creek 1650 Comment
  RSA795644  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  CHSC108861  Fritillaria affinis Lowell Ahart 2012-2-22 17747 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC2276  Fritillaria affinis N. Maxwell 1929-3-2 Butte Salmon Hole on Chico Creek. 152 Comment
  SEINET10469655  Fritillaria eastwoodiae Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3430 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CHSC36221  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor. 350 Comment
  CHSC29246  Fritillaria recurva M. S. Taylor 1980-5-8 2603 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CAS-BOT-BC508142  Fritillaria recurva Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC508144  Fritillaria recurva C. C., Mrs. Bruce 1897-1-1 2026 Butte Unspecified Comment
  CDA13246  Galium aparine G. F. Hrusa, T. D. Wilfred 1996-7-8 13093 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC35216  Galium aparine M. S. Taylor 1981-5-14 3711 Butte N side of Four Mile Ridge, S of Sly Creek, ca. 1.5 mi NE of Mt House on Oroville-Quincy Hwy. 883 Comment
  CHSC11822  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  CHSC33583  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd, ca. 1.5 air mi NW of its jct with 21N35Y (Bryant Ravine Rd), ca. 1 air mi N of Feather Falls. 792 Comment
  CHSC34229  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd, ca. 1.5 air mi NW of its jct with 21N35Y, ca. 1 air mi N of Feather Falls. 792 Comment
  SBBG7301  Galium bolanderi H. and M. Dearing 1938-6-21 2056 Butte 21 mi NE of Chico Comment
  SD4923  Galium grayanum subsp. grayanum E. B. Copeland 1930-7-25 474 Butte Jonesville, in crevices, dry rocky ridge 1700 Comment
  CHSC48885  Galium grayanum var. grayanum Vernon H. Oswald 1983-8-17 988 Butte Trail between Humboldt Summit and Humboldt Peak, ca 3 mi NE of Jonesville. 2097 Comment
  CHSC78269  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS115614  Galium parisiense Lowell Ahart 2009-5-15 15679 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  SEINET10500637  Galium parisiense Lowell Ahart 1985-6-17 Ahart 5062 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 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
  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
  HSC73011  Galium trifidum subsp. columbianum M. S. Taylor, L. Ahart 1981-8-16 4196 Butte Jones Meadow, 3 mi. S of Philbrook Reservoir, 6 mi. NE of Stirling City 1829 Comment
  JEPS98530  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte on the SE side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) NE of Feather Falls. 1219 Comment
  SBBG29181  Galium triflorum E. B. Copeland 1930-7-15 Butte Jonesville 1500 Comment
  UC1562433  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte below high-water line Lake Oroville (e of the Enterprise boat launch area, about 1/8 mi nw of the Enterprise Bridge across Lake Oroville) 259 Comment
  CHSC50648  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte In the burrow 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
  CHSC48444  Garrya fremontii Vernon Oswald 1983-1-13 44 Butte Along Highway 32 ca. 8 mi n-e of Chico. 512 Comment
  JEPS107518  Gastridium ventricosum Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  CHSC25423  Gayophytum heterozygum Hayes; Warner 1977-9-11 60 Butte Along shoulder, Hwy 32, ca. 2 m s of road, exactly 24.6 mi e of Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  JEPS117285  Gayophytum heterozygum Lowell Ahart 2010-9-21 17215 Butte On damp bare soil, open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CHSC109068  Geranium carolinianum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17905 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC90471  Geranium molle Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, 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
  CDA40045  Gilia capitata subsp. mediomontana L. Ahart 2006-5-19 12637 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. Comment
  CHSC102506  Gilia capitata subsp. pedemontana Lowell Ahart 2009-5-30 15784 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC71120  Gilia capitata subsp. pedemontana Jan Monelo 1989-4-11 6 Butte Ca 4 mi e of Chico, n bank of Honey Run Rd. 106 Comment
  JEPS108849  Gilia capitata subsp. pedemontana Lowell Ahart 2006-5-8 12607 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
  SD122562  Gilia capitata subsp. pedemontana Lowell Ahart 1984-6-8 4671 Butte At the Ponderosa Dam, ca. 2.0 miles northwest of Forbestown. 370 Comment
  CHSC1258  Gilia tricolor P. Delaplane 1965-3-10 18 Butte E. side of Upper Bidwell Park Rd, 1.2 mi above Municipal Golf Course. 121 Comment
  RSA590189  Gilia tricolor Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7210 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. N side of Beatson Hollow, 1.9 miles along trail from entrance on Cherokee Rd. Comment
  CAS-BOT-BC266585  Githopsis pulchella A. A. Heller 1914-5-22 11423 Butte Near Richardson Springs Comment
  CAS-BOT-BC266590  Githopsis pulchella Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley Comment
  UC890661  Githopsis pulchella subsp. campestris A. A. Heller 1937-5-31 15340 Butte about 21 mi from Oroville (near the junction of Highway 24 and the Yankee Hill road) Comment
  CHSC32136  Githopsis specularioides L. Ahart 1974-4-24 427 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33153  Githopsis specularioides R. Watts 1974-4-30 29 Butte Found ca. 15 mi ne of Chico on Cohasset Road. Comment
  CHSC45500  Gleditsia triacanthos Lowell Ahart 1988-10-28 6190 Butte On the south side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  CHSC113543  Glinus lotoides Lowell Ahart 2014-9-23 19869 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  JEPS122248  Glinus lotoides Lowell Ahart 2014-9-23 19869 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
  JEPS124255  Glinus lotoides Lowell Ahart 2015-10-26 20592 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC434994  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miels south-west of Oroville 36 Comment
  CDA2162  Glyceria declinata L. Ahart 2000-5-21 8377 Butte On the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. Comment
  CAS-BOT-BC280564  Glyceria elata Lowell Ahart 1981-9-15 3174 Butte Along French Creek 1300 Comment
  CHSC34189  Glyceria elata L. Ahart 1981-9-15 3174 Butte On the bottom of a swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC39631  Glyceria occidentalis Lowell Ahart 1983-4-18 3936 Butte On the bottom of rice field, about 2 1/4 miles north and 1/2 mile east of Honcut, Peter Ahart Ranch. Also, in a vernal pool north of Ahart home. 50 Comment
  RSA726436  Gnaphalium luteoalbum L. Ahart 2007-11-3 14553 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC302475  Gnaphalium palustre Clarence R. Quick 1963-7-16 63 55 b Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CAS-BOT-BC302477  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam 274 Comment
  CHSC45004  Gnaphalium palustre Lowell Ahart 1988-9-4 6181 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC444994  Gnaphalium palustre E. B. Copeland 1930-7-1 Butte Scotch John meadow Jonesville, Scotch John meadow 1700 Comment
  SD111956  Gratiola ebracteata Barbara Ertter, Jeffrey Strachan 1980-5-5 3266 Butte Peter Ahart Ranch ca 1 1/2 mi northeast of Honcut between Oroville and Marysville, pasture north of the house, ditch 29 Comment
  CHSC97029  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-19 9061 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  RSA754527  Grindelia hirsutula var. davyi L. Ahart 2009-8-3 16263 Butte E side of Big Chico Creek, about 30 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  UC1560379  Hackelia nervosa E. Joyal and D. Mehlman 1988-7-3 1309 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  UC392205  Hackelia nervosa E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  CHSC31599  Hedypnois cretica L. Ahart 1975-5-12 756 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC306541  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC38358  Helenium puberulum Vernon Oswald 1983-6-14 680 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. ca. 100 ft e of Diversion Dam Parking Area L. 134 Comment
  CAS-BOT-BC314696  Helianthella californica var. californica A. A. Heller 1915-5-25 11897 Butte Ridge above Enterprise in teh Sierra Nevada 609 Comment
  CHSC43615  Helianthus annuus Vernon Oswald 1983-6-22 756 Butte Beside Calif. Hwy. 32, 5.8 mi n-e of its junction with Calif. Hwy. 99 in Chico. 304 Comment
  CHSC65192  Helminthotheca echioides Lowell Ahart 1995-7-2 7590 Butte Along the edge of the dirt road, near the water trough for horses, south-west of the parking area to unload horses, on the west side of Oroville Quincy Highway, Loafer Creek State Park, about 6 miles east of Oroville. 335 Comment
  UC1609075  Hemizonella minima Lowell Ahart 1993-6-26 7021 Butte about 1 mi w Lost Creek Reservoir (e side of dirt road); Mooreville Ridge 1188 Comment
  SEINET10938048  Hemizonia parryi subsp. rudis Lowell Ahart 1983-9-19 Ahart 4456 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC29045  Hesperevax caulescens R. Schlising 1980-4-14 3562 Butte Richvale vernal pools, 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS104456  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  JEPS29508  Hesperevax caulescens R. F. Hoover 1937-5-18 2229 Butte 3 mi e Richvale Comment
  CAS-BOT-BC310188  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  HSC98211  Hesperocyparis macnabiana M. S. Taylor, J. D. Jokerst 1980-2-23 2317 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  CHSC1013  Hesperolinon micranthum V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC48602  Hesperolinon micranthum Vernon Oswald 1983-7-6 805 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. Growing on an old logging road in yellow pine forest. 1036 Comment
  CHSC78154  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  POM312837  Heteranthera dubia H. L. Mason, Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  CAS-BOT-BC487622  Heteranthera limosa John 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi W of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
  CHSC38644  Heteromeles arbutifolia Vernon Oswald 1982-12-17 25 Butte Bidwell Park, Chico, between Chico Creek and Upper Park Rd about 200 ft w of the end of the pavement. 91 Comment
  SD8501  Heteromeles arbutifolia R. M. Austin 1883-1 Butte Comment
  SEINET10483349  Heteromeles arbutifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4113 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC6159  Heterotheca grandiflora J. Wheeler 1968-2-15 281 Butte Southern Pacific Railroad embankment at Coal Canyon. 228 Comment
  CHSC70848  Heterotheca grandiflora Lowell Ahart 1998-4-8 7951 Butte 100 yards south of the Thermalito Diversion Dam, on the east side of the Feather River, City Park, Oroville. 57 Comment
  JEPS108135  Heterotheca grandiflora Lowell Ahart 2005-11-20 12491 Butte W side of the Poe Power house, E of the North Fork of the Feather River 275 Comment
  CHSC43244  Heterotheca oregona var. compacta Lowell Ahart 1987-9-24 5903 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS103460  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CHSC21004  Heuchera micrantha var. erubescens M. S. Taylor 1975-4-29 547 Butte On s side of Hwy 70, ca 25 mi ne of Oroville. Comment
  CAS-BOT-BC420458  Heuchera micrantha var. erubescens Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  RSA0062978  Heuchera micrantha var. erubescens James R. Shevock 1972-5-19 1785 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  UCD116346  Hibiscus lasiocarpos var. occidentalis G. L. Webster; G. L. Stebbins 1967-8-27 7533 Butte Howard Slough, along Biggs-Princeton road c. 1/2 mile W of Butte Creek. Comment
  UCD133143  Hieracium albiflorum L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC102729  Hirschfeldia incana Lowell Ahart 2009-7-9 16020 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
  RSA443118  Hoita macrostachya L. Ahart 1985-6-30 5080 Butte About 2.5 miles northeast of Forbestown. 869 Comment
  CHSC84695  Hoita orbicularis L. P. Janeway 2003-6-8 7822 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  CDA2179  Holcus lanatus L. Ahart 2000-7-17 8594 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  CHSC85916  Holodiscus discolor L. P. Janeway; Christine Hantelman 2003-7-3 7865 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.8 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. 276 Comment
  CHSC42797  Holodiscus microphyllus var. glabrescens L. P. Janeway 1987-7-5 2463 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd). 1844 Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC30553  Hordeum marinum subsp. gussoneanum J. D. Jokerst 1980-4-6 548 A Butte Along sides of Humboldt Rd. 1.0 mi W of the jct of Humboldt Rd and Hwy 32. Comment
  HSC91100  Hordeum marinum subsp. gussoneanum J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  HSC92442  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 757 Butte Peter Ahart Ranch, about 1 1/2 mi. N and 1 mi. E of Honcut. 12 mi. S of Oroville. Comment
  JEPS117881  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 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
  CHSC99016  Hordeum murinum subsp. leporinum Lowell Ahart 2008-5-21 14781 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
  CAS-BOT-BC143344  Horkelia Clarence R. Quick 1952-6-30 52 -104 Butte Big Bar Mt., east of Pulga Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  CHSC1557  Horkelia tridentata subsp. flavescens M. Davidson 1929-5-2 Butte Paradise. 609 Comment
  RSA85212  Horkelia tridentata subsp. tridentata F. W. Peirson 1926-6-21 6781 Butte Butte Meadow, Humboldt Road Comment
  CAS-BOT-BC536256  Horkelia tridentata var. tridentata A. A. Heller 1913-6-7 10793 Butte Near Stirling 1036 Comment
  CHSC48517  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-26 2930 Butte Rancho Bosquelo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). On an old channel of the river. 48 Comment
  CHSC116340  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC42485  Hydrophyllum occidentale Lowell Ahart 1987-5-12 5650 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC871904  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte 10 mi. e. Chico Comment
  SBBG128726  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte seeps, SE edge of large open bare granite area, ca. 3.8 mi NE of Little Bald Rock, ca. 2 mi (air) SE of Brush Crk, ca. 15 mi (air) NE of Oroville 974 Comment
  CHSC31583  Hypericum concinnum L. Ahart; 1371 1977-5-7 1351 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4615  Hypericum concinnum R. Carter 1966-6-15 428 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd.; growing on bank above road in rather dry soil. 883 Comment
  CHSC41258  Hypericum formosum var. scouleri S. C. Morey 1983-7-21 477 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS124322  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC111143  Hypericum perforatum Lowell Ahart 2012-6-21 18215 Butte On the south side of Big Chico Creek, about 120 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC52346  Hypericum perforatum Pauleen Broyles 1987-5-21 1045 Butte Vina Plains Preserve. Eroded sandstone banks along Pine Creek. Comment
  CHSC101693  Hypochaeris glabra Lowell Ahart 2009-4-26 15612 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 northeast of Chico. 461 Comment
  SEINET10473837  Hypochaeris glabra Mary Susan Taylor 1981-5-19 Taylor 3809 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  SEINET10532856  Ibicella lutea Mary Susan Taylor 1974-10-11 Taylor 328 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  UC1564773  Imperata brevifolia Vernon H. Oswald 1989-9-28 4020 Butte ne of Chico (Richardson Springs, n of the falls on East Branch of Mud Creek); Richardson Springs 243 Comment
  UC600658  Ipomopsis aggregata H. F. Copeland 1928-8-14 Butte Jonesville Comment
  SEINET6193256 Image available Iris hartwegii R. G. Bevers 1968-1 27 Butte 13 mi E of Chico on hwy 32 at the entrance to a ranch Comment
  SEINET4170702  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise , in the Arid Transition Zone. Comment
  CHSC46530  Iris hartwegii subsp. hartwegii Lowell Ahart 1980-5-19 2316 Butte Growing on the ridge east of the Golden Trout Crossing on the South Fork of the Feather River, about 4 miles west of the Sly Creek Dam. 1066 Comment
  CHSC10681  Iris macrosiphon Lowell Ahart 1967-4-12 Butte Near Bidwell Bar. 152 Comment
  CHSC29031  Iris macrosiphon J. D. Jokerst 1980-3-28 526 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC4034  Iris macrosiphon Sadie Gualtieri 1967-3-6 Butte On Skyway to Paradise, 3 to 5 miles outside of Chico; open field on S. side of hiway. Comment
  CHSC90621  Iris macrosiphon J. Marr 1988-3-18 2 Butte NW side, 4 mi on Concow Rd. W. from Hwy 70, 18 mi n of Oroville. 365 Comment
  RSA135852  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20690 Butte Along road crossing from Oroville-Magalia road to Highway 50 alt. via Pentz 488 Comment
  SEINET10469752  Iris macrosiphon Mary Susan Taylor 1975-2-16 Taylor 379 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  SEINET3876026  Iris macrosiphon Cathryn Bakken 1969-4-19 18 Butte Bridle Path, Sycamore Hill.; 0 Comment
  CDA43102  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada.; Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the upper end of Bald Rock Road. Comment
  SEINET10874665  Isoetes Mary Susan Taylor 1980-3-1 Taylor 2345 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
  CHSC28828  Isoetes howellii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 420 Butte Top of North Table Mountain, ca 1.0 mi n of Cherokee Rd. Comment
  SEINET3450183  Isoetes howellii Unknown 2003-5-28 10233 Butte Alleghany, Alleghany, about 7 air miles northeast, Harris Meadow, upper west branch of Black Jack Ravine, on the west side of Forest highway 98 270 Comment
  CAS-BOT-BC61876  Isoetes nuttallii Lowell Ahart 1989-5-23 6268 Butte in Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, 426 Comment
  CHSC86594  Isoetes nuttallii L. P. Janeway 2003-5-7 7774 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  JEPS127194  Isoetes nuttallii Lowell Ahart 2016-4-15 20743 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  JEPS98584  Isoetes nuttallii Lowell Ahart 2000-6-4 8443 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  UCD135924  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte In Valley Grassland, just E of Chico, NE corner of jct of Notre Dame Blvd and the Skyway. 68 Comment
  CAS-BOT-BC112388  Isolepis carinata Lowell Ahart 1983-6-12 4048 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, 425 Comment
  CHSC46474  Isolepis setacea Vernon Oswald 1989-6-19 3809 Butte Feather Falls-Cascade Rd, at the 1 mi paddle marker ne of Feather Falls. 1005 Comment
  CHSC78324  Isolepis setacea Lowell Ahart 2000-7-11 8564 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 miles southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 5 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC93634  Juglans californica var. hindsii Paul Kirk; Joe Silveira 2001-5-25 1 Butte Rancho Llano Seco, W of Ryan Island, 2.8 km W of ranch house, 200 meters E of Sacramento River. 30 Comment
  RSA134790  Juglans hindsii Percy C. Everett, E. K. Balls 1959-10-20 23906 Butte Henshaw Ave., Chico. 59 Comment
  RSA299477  Juglans hindsii J. P. Smith, J. O. Sawyer 1973-4-14 6062 Butte Rock Road 1 mile west of Cohasset Road near Chico Comment
  CHSC61932  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte On the Rice Experiment Station, on the south side of Butte City Highway, east of the Southern Pacific Railroad, west of Riceton Road, about 3 1/4 miles north-west of Biggs. 30 Comment
  CHSC97062  Juncus acuminatus Lowell Ahart 2007-7-27 14396 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
  CHSC31839  Juncus articulatus L. Ahart 1976-6-24 502 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  UC203672  Juncus bufonius A. A. Heller 1914-6-2 11478 Butte 8 mi n Oroville Comment
  CHSC112720  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC38917  Juncus bufonius var. bufonius Vernon Oswald 1983-6-7 646 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC42378  Juncus bufonius var. bufonius Lowell Ahart 1987-5-6 5545 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS120656  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  UCSB63749  Juncus bufonius var. congestus Ahart, Lowell 1998-5-2 Butte T17N, R2E, southwest 1/4 Section 7; graded north side of Evans Reimer Road; about 1/4 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  JEPS87149  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte ca. 3/4 mi. n.w. Lotts Lake (ca. 1 mi. n.e. of Carr Mine) 1798 Comment
  CHSC38919  Juncus capitatus Vernon Oswald 1982-4-26 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  JEPS118077  Juncus capitatus Lowell Ahart 2011-5-2 17346 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 32 Comment
  UCD141451  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4.5 miles southwest of Oroville. 30 Comment
  RSA755753  Juncus dubius L. Ahart 2009-8-23 16292 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  RSA0113969  Juncus effusus subsp. pacificus Lowell A. Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 miles west of the Ponderosa Dam. 258 Comment
  SD192836  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, ca. 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, ca. 0.25 mile west of the Ponderosa Dam. 257 Comment
  UCD141503  Juncus effusus subsp. pacificus L. Ahart 2008-7-23 15152 Butte on the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  CHSC61348  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-7-29 7120 Butte About 2 1/2 miles northeast of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  UC1564788  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-6-27 3830 Butte ca 3.3 air mi se Jonesville (Humbug Rd at Butte Creek); Butte Creek 1767 Comment
  CDA39192  Juncus howellii T. C. Fuller 1962-7-12 9200 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC78212  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A Butte In tire ruts on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  SEINET11787469  Juncus leiospermus Unknown 1984-1 4589 Butte ca 0.5 mi N of Kunkle Reservoir, along Kunkle Cr, ca 2 mi S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  CAS-BOT-BC110105  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS110149  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut 58 Comment
  CHSC113202  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-2 19422 Butte About 1/2 mile north of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 424 Comment
  CHSC83896  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the 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
  RSA712818  Juncus leiospermus var. leiospermus L. Ahart 2006-5-3 12558 Butte About 5/8 mile north of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles north of Oroville. 405 Comment
  UC398899  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte above Jonesville (near Butte Creek House) 1750 Comment
  CHSC97419  Juncus occidentalis Robert Fischer 2006-5-28 1023 Butte Chico. Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. 243 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
  CHSC44525  Juncus oxymeris Lowell Ahart 1988-6-23 6069 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC57213  Juncus parryi L. P. Janeway 1987-7-5 2455 Butte At end of old logging road east of the Concow Road and 1.0 mi southwest of Jones Meadow. At granite outcroppings overlooking Balsam and Big Kimshew Creeks. 1798 Comment
  RSA755196  Juncus patens L. Ahart 2009-5-30 15779 Butte About 60-100 yards north of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile W of Highway 32, about 10 miles NE of Chico. 269 Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 Comment
  CHSC31928  Juncus tenuis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 844 Butte N of and adjacent to Humboldt Rd, 0.1 mi W of its junction with the Skyway, community of Butte Meadows. 1341 Comment
  JEPS98614  Juncus triformis Lowell Ahart 2000-6-27 8529 Butte N side of Bean Creek Road, 1/4 mi SE of Little Bald Rock, 1 1/4 mi NE of Big Bald Rock, 4 air mi NE of Madrone Lake, 13 air mi NE of Oroville 1066 Comment
  UC1748363  Juncus triformis James D. Jokerst, M. S. Taylor and L. Ahart 1984-4-6 1964 Butte just N of Kunkle Reservoir (just SW of Lago Vista Way); south Paradise 457 Comment
  JEPS113764  Juncus usitatus Lowell Ahart 2007-7-27 14398 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  CAS-BOT-BC80921  Juniperus californica Arthur Menzies 1969-8-1 s.n. Butte Near Gillem's Bluff, Little Butte Creek, Nelson West Rd & Chico-Butte City Hwy. Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  CAS-BOT-BC235680  Keckiella breviflora var. glabrisepala Mrs. C. C. Bruce 1898-5-1 2008 Butte Unspecified Comment
  CHSC39331  Keckiella breviflora var. glabrisepala Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UCR47786  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada Mtns, Rocky slopes and fill along the Feather River about 2.9 mi south of the Plumas County line 549 Comment
  SEINET10964557  Keckiella lemmonii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4209 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC113507  Kelloggia galioides Lowell Ahart 2014-7-16 19682 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC44083  Kelloggia galioides L. P. Janeway 1987-6-26 2323 Butte SW end of Logue Mdws. 1325 Comment
  POM193328  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  RSA447647  Kelloggia galioides M. B. Dunkle 1931-8-12 s.n. Butte Paradise Valley. Comment
  SD4941  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville, partial shade 1550 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
  JEPS121302  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC46107  Koeleria macrantha J. D. Jokerst; R. A. Schlising 1982-6-4 1587 Butte Ridge, ca 100 meters below the road on top of the ridge. 853 Comment
  CHSC4140  Kumlienia hystricula R. Carter 1966-4-28 379 Butte Found in Feather R. Canyon 11 mi. NW of Butte-Plumas Co. line along N side of Hwy 70. On cliff above road just S of water fountain. 701 Comment
  CHSC4662  Kumlienia hystricula R. Carter 1966-4-11 340 Butte Found ca. 1/4 mi. E of Bidwell Bar along S side of R.R. tracks; on cliff. 152 Comment
  CHSC94351  Kyhosia bolanderi Lowell Ahart 2006-7-25 13064 Butte West 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
  SEINET10473869  Lactuca saligna Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5151 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  UCD133505  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  CHSC102823  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC341298  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC341310  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  SEINET10837061  Lamium amplexicaule Mary Susan Taylor 1980-3-1 Taylor 2329 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC45315  Landoltia punctata Lowell Ahart 1988-10-16 6187 Butte Dredge pond located ca. 300 ft ne of intersection of Pacific Heights Rd. and Hwy 70, ca. 1 mi s of Oroville. 45 Comment
  CHSC113441  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CAS-BOT-BC337908  Lasthenia californica H. F. Copeland 1929-5-4 s.n. Butte Canyon of Chico Creek Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC46949  Lasthenia fremontii Lowell Ahart 1983-5-12 3974 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  POM30704  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  CHSC35675  Lasthenia glaberrima R. E. Preston 1982-5-9 279 Butte At edge of pasture on e side of Cohasset Rd, ca. 0.4 mi n of Eaton Rd. 57 Comment
  CHSC93346  Lasthenia gracilis Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
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Jan 19 2011
  CAS-BOT-BC370793  Lasthenia platycarpha Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CAS-BOT-BC204903  Lathyrus Saichi Kawahara 1968-5-4 359 Butte Colusa-Hamilton City Road, 1 mile north of Princeton ferry, west bank of Sacramento River 30 Comment
  SD116537  Lathyrus angulatus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3277 Butte Peter Ahart Ranch ca. 2.5 miles NNE of Honcut between Oroville & Marysville, dried vernal pool previously plowed as grainfield, now reverted, rocky; higher ground around pool 29 Comment
  CAS-BOT-BC213346  Lathyrus jepsonii subsp. californicus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SEINET10451847  Lathyrus jepsonii subsp. californicus Mary Susan Taylor 1978-7-21 Taylor 1833 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
  CHSC116512  Lathyrus jepsonii var. californicus B. Castro; Josh Brown, Melinda Carlson 2008-4-25 1732 Butte Sacramento Valley. E bank of Sacramento River, ca 0.2 mi N (upstream) of Gianelli Bridge at Hamilton City, just up from water's edge. 39 Comment
  CHSC28687  Lathyrus jepsonii var. californicus M. S. Taylor 1978-7-21 1833 Butte On n side of Oroville-Quincy Hwy in open meadow, ca. 1 mi s of Butte Couty-Plumas County. Comment
  CHSC66440  Lathyrus jepsonii var. californicus Vernon H. Oswald; Lowell Ahart 1996-6-10 7753 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. Locally common on the edge of the slough on the E side of Goodman Opening, near the SE end of the Riparian Sanctuary. 28 Comment
  CDA42904  Lathyrus latifolius L. Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  UC478504  Lathyrus nevadensis var. nevadensis E. B. Copeland 1931-6-10 310 Butte Jonesville 1500 Comment
  CAS-BOT-BC213297  Lathyrus sulphureus A. A. Heller; H. E. Brown 1902-5-7 5485 Butte Berry Canyon, near Clear Creek Comment
  RSA21944  Lathyrus sulphureus H. C. Cantelow 1939-5-19 s.n. Butte Brush Creek Ranger Station. Comment
  CHSC861  Lathyrus tingitanus V. Holt 1947-5-1 Butte Nimshew grade. 609 Comment
  CHSC30389  Layia fremontii J. D. Jokerst 1980-4-17 600 Butte Top of North Table Mt. 419 Comment
  CHSC90108  Layia fremontii Richard R. Snow 1991-3-20 3 Butte 5 ft north of Renkow Road about 12.8 mi north of Chico. Roadside area. 70 Comment
  UC304001  Layia fremontii H. E. Brown 1897-4-15 184 Butte Clear Creek 53 Comment
  UCD73059  Layia fremontii 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
  RSA256659  Layia fremontii Linda M. Barker 1974-4-20 146 Butte Skyway Road, 1 mile E of Hwy 99. 61 Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  CHSC51670  Leersia oryzoides M. Bailey 1990-10-9 417 Butte East Branch of Clear Creek, near intersection of the east and west branches of Clear Creek near Pentz Road, Butte College Campus. 85 Comment
  CHSC8767  Lemna minor S. Chulasmai 1966-3-25 1 Butte Dradger Pond (3 mile south of Chico). Comment
  CHSC103014  Lemna minuta Lowell Ahart 2009-10-8 16410 Butte On the south side of the road, about 50 yards east of Parking Lot 15, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS120087  Lemna minuta Lowell Ahart 2012-6-5 18158 Butte On the south side of Beastson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC101742  Leontodon saxatilis subsp. longirostris Lowell Ahart 2009-5-23 15750 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
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CHSC49830  Lepidium campestre Vernon Oswald 1990-4-4 4146 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. Near the streamlet draining into the lake. 268 Comment
  CAS-BOT-BC89878  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC37366  Lepidium nitidum R. A. Schlising 1982-4-24 4230 Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. At pool margins. Comment
  UC203607  Lepidium nitidum A. A. Heller 1914-4-11 11274 Butte 8 mi n Oroville 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
  SEINET10907332  Lepidium perfoliatum Lowell Ahart 1985-4-1 Ahart 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC77816  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte Around the margins of the lawn on the south side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  CDA34697  Lepidium strictum L. Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street in Gridley. Comment
  CHSC35641  Lepidium strictum R. E. Preston 1982-4-7 225 Butte At edge of almond orchard; nw corner jct of Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  RSA768993  Lepidium strictum L. Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street in Gridley. 29 Comment
  SEINET10874435  Lepidium strictum Lowell Ahart 1983-4-10 Ahart 3929 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CDA32440  Leptochloa fascicularis G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4366 Butte On levees of the Rice Experiment Station, 3 mile north of Biggs on Highway 162 0 Comment
  CHSC46392  Leptosiphon bicolor Lowell Ahart 1989-5-10 6214 Butte Along a dirt road, near a small stream, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville, near Lake Oroville. 289 Comment
  CHSC29966  Leptosiphon bolanderi R. A. Schlising; D. Ikeda 1980-5-31 3607 Butte S of village of Cohasset along firetrail. 441 Comment
  CHSC25325  Lessingia nana M. Hayes; Warner 1977-8-29 52 Butte Next to Firing Range in Upper Bidwell Park, Chico. 80 Comment
  CAS-BOT-BC341794  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  CHSC38376  Lessingia nemaclada Vernon Oswald 1983-10-2 1050 Butte Upper Bidwell Park, Chico, on the north rim about half way between the heads of the intermittent streams which flow into Sycamore Creek. 347 Comment
  CHSC62431  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest. South end of Swayne Hill. Along edge of dirt road 23N28. 731 Comment
  CHSC89484  Lessingia nemaclada Jenny Marr 1994-7-6 215 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  SD8923  Lessingia nemaclada Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CAS-BOT-BC341792  Lessingia nemaclada Clarence R. Quick 1964-7-9 64 -63 Butte Slope north of Jarbo Gap Comment
  JEPS32698  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi w Oroville 45 Comment
  RSA169409  Lessingia virgata John T. Howell 1959-9-19 34612 Butte 5 miles west of Oroville 46 Comment
  CHSC3864  Leucojum aestivum Gary Dutton 1966-3-16 121 Butte C. S. C., N. E. of science bld. Along Chico Creek. Comment
  SEINET10895981  Lewisia cantelovii Mary Susan Taylor 1979-9-28 Taylor 2194 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC100828  Lewisia nevadensis Susan Bazell; Robert Schlising 2006-7-6 63 Butte Scotts John Meadow. E of Jonesville on road 26N27 towards Humbug Road, about 0.2 mi S of dirt road following Scotts John Creek. In upper wet part of meadow. 1767 Comment
  CHSC100835  Lewisia triphylla R. A. Schlising; R. Banchero 1981-5-20 4067 Butte E of village of Feather Falls on Lumpkin Ridge. Comment
  SEINET10454481  Ligusticum Mary Susan Taylor 1976-4-27 Taylor 1090 Butte Abundant on N side of Villas Rd, ca. 0.5 mi E of junction of Villas Rd and Cohas set Hwy, Cohasset. Yellow Pine Forest with Calochortus monophyllus. 762 Comment
  CAS-BOT-BC436016  Ligusticum grayi R. Carter 1966-6-15 444 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd., ca. 5 yds. off road 1097 Comment
  CAS-BOT-BC130567  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC509479  Lilium kelleyanum E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  POM169434  Lilium parvum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CAS-BOT-BC133046  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  POM86187  Limnanthes alba R. M. Austin 1883-05 s.n. Butte No locality information provided. Comment
  RSA176424  Limnanthes alba A. A. Heller 1926-4-12 s.n. Butte 8 miles north of Chico. Comment
  SEINET10495212  Limnanthes alba Mary Susan Taylor 1981-5-7 Taylor 3643 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC1005  Limnanthes alba subsp. alba Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC59327  Limnanthes alba subsp. versicolor Darby Kremer 1992-4-18 21 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 Comment
  CHSC54166  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 6648 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
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  POM282578  Limnanthes douglasii subsp. rosea J. W. Morrison 1928-05 s.n. Butte Oroville, Sierra Nevada Mt. Range, Feather River. 305 Comment
  SDSU8107  Limnanthes douglasii var. rosea Scott McMillan 1992-4-11 Butte The pool was under an electrical tower north of Upper Park Rd., in Upper Bidwell Park, Chico, California. 78 Comment
  CHSC67556  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3242 Butte Rancho Arroyo Population along dirt road ca. 0.25 mi E of Stern's location. 79 Comment
  CHSC53968  Limnanthes floccosa subsp. floccosa Vernon H. Oswald 1991-4-24 4531 Butte Hwy 99 between Broyles Rd and Hamilton Nord Cana Hwy, north of Chico. Along drainages of the west side of Hwy 99. 59 Comment
  CHSC112601  Limnophila X ludoviciana Lowell Ahart 2013-9-20 19062 Butte Along a ditch, about 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about one mile southeast of the Rice Experiment Station. 30 Comment
  UC1377648  Linanthus bicolor John Ingram and Arlynn Ingram 1960-4-5 294 Butte about 2 mi s Paradise (along Neal Road) Comment
  SD4004  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville, Mountain top west of the Summit Comment
  UCD19366  Lindernia dubia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 857 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  CHSC42116  Lindernia dubia var. anagallidea Lowell Ahart 1986-11-9 5444 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
  CHSC97926  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Weedy at edge of flooded rice checks, experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  CHSC45179  Lipocarpha Lowell Ahart 1973-6-28 259 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC9278  Lithophragma D. C. Burns 1971-4-2 111 Butte Ca. 30 yds. s side of Cohasset rd. ca. 4.0 mi w of intersection of Cohasset rd. and Vilas rd. 304 Comment
  CHSC4658  Lithophragma bolanderi R. Carter 1966-4-11 331 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R. R. tracks on S side of river; growing on rocky slope on E side of bridge over s. Fork of Feather R. Comment
  CHSC46271  Lithophragma campanulatum Vernon Oswald 1989-5-8 3761 Butte Feather Falls Trail, between the trailhead at the end of Bryant Ravine Rd and Frey Creek. 731 Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 Comment
  SEINET10497326  Lithospermum californicum Mary Susan Taylor 1981-3-16 Taylor 3403 Butte T21N R6E ne sec 24. Brush Creek quad. Just off tractor-fire rd, ca. 1/4 mi n of 21N89, ca. 0.5-1 mi nw of its jct with Zink Rd, ca. 1 air mi sw of Brush Creek. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC80515  Lobularia maritima Lowell Ahart 2001-4-15 8722 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC116726  Logfia gallica Lowell Ahart 2016-5-25 20880 Butte On the north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS115659  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road 440 Comment
  JEPS115281  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
  CHSC87549  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Sierra Nevada foothills on the edge of upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on top of a ridge next to the old Hwy 32 Road near the north end of Humboldt Trail. 426 Comment
  UC566835  Lomatium dasycarpum subsp. tomentosum Herbert L. Mason 1927-5-10 3721 Butte n.e. Oroville (n. side of Table Mt., Coal Creek); Table Mt., Coal Creek Comment
  SBBG18209  Lomatium dasycarpum subsp. tomentosum M. Vincent 1962-4-15 175 Butte intersection of Pentz and US Hwy 40A, 13 mi S of Paradise Comment
  CAS-BOT-BC240448  Lonicera hispidula Margaret J. Williams; Wayne Roderick 1984-5-25 84- 23 -1 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam 457 Comment
  CHSC42018  Lonicera hispidula Lowell Ahart 1975-9-4 983 Butte West of Ponderosa Way, near Sunset Hill, about 3 miles west of Forbestown. 426 Comment
  CHSC70791  Lonicera hispidula H. Durio; B. Castro, L. Gehrung 1995-7-24 Butte Ca. 1.5 air mi A of Hungry Hunt Peak, and 1.5 mi # of Hwy 70, ca 0.2 mi s on 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC2406  Lonicera interrupta R. Carter 1964-5-27 105 Butte 8 mi. E of Oroville, 200 yds. up Wakefield Dr. off Feathervale on N side of road. 121 Comment
  JEPS115657  Lonicera interrupta Lowell Ahart 2009-5-30 15807 -A Butte North of a small drainage, on the east side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  POM46195  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  CHSC66160  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7671 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  RSA719534  Lotus denticulatus Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12877 Butte East of Chico along Route 32. Comment
  UC726026  Lotus grandiflorus var. grandiflorus A. A. Heller 1938-5-28 15125 Butte w of Pulga (on the Feather River Highway) Comment
  JEPS117151  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SEINET10451995  Lotus nevadensis Lowell Ahart 1983-5-28 Ahart 4016 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UC176246  Lotus purshianus var. purshianus A. A. Heller 1913-10-7 11146 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  UC862230  Lotus purshianus var. purshianus A. A. Heller 1916-9-8 12651 Butte e of Chico (Ten-Mile House) Comment
  CHSC112881  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  UCD65988  Ludwigia hexapetala B. J. Grewell; Steve Cordes 2005-9-27 05- 23 -LU Butte Upper Butte Wildlife Area, Llano Seco Unit, California Dept. of Fish and Game. 1521 acre wetland area, near intersection of Seven Mile Lane and Nelson Road. 32 Comment
  UCD66040  Ludwigia hexapetala B. J. Grewell 2005-10-13 05- 37 -LU Butte Upper Butte Wildlife Area, Little Dry Creek Unit, Dept of Fish and Game, Colusa - Gridley Hwy. 20 Comment
  CHSC46294  Ludwigia palustris Vernon Oswald 1989-5-30 3792 Butte Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. On the margin of the lake. 54 Comment
  CHSC21155  Ludwigia peploides M. S. Taylor 1975-10-3 925 Butte In slough at bridge over Big Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  CHSC97355  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610536E 4412518N. 292 Comment
  RSA0036364  Lupinus albicaulis Daisie Huang 2006-8-3 06080306 Butte Butte. 1327 Comment
  SEINET10452614  Lupinus albicaulis Lowell Ahart 1985-5-10 Ahart 4949 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC31442  Lupinus albicaulis var. shastensis L. Ahart 1980-9-10 2642 Butte Along the edge of the road ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC35985  Lupinus albicaulis var. shastensis J. D. Jokerst 1982-5-16 1571 Butte Ponderosa Way 0.5 mi N of its jct, with Lower Forbestown Road. 731 Comment
  SEINET10488406  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20n,r6e,sec.31 se 1/4, nw 1/4. Forbestown quad. E side of lumpkin-laporte Road, 1 mile n of enterprise bridge over s fork feather river, ca 10 air miles E of oroville. Granitic soils. Assoc.; Diplacus grandiflorus, lupinus Stiversii, trifolium ciliolatum 457 Comment
  CHSC899  Lupinus albifrons var. albifrons L. Nelson 1935-5-7 Butte Honey Run road. 243 Comment
  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  CHSC90494  Lupinus bicolor Stacy Scott 1981-4-24 6 Butte About 1.3 km north of Eaton Road, 100 m east of Cohasset Hwy along Sheep (Grizzly) Hollow; about 7 km north-northeast of Chico. 190 Comment
  UCD107337  Lupinus bicolor Collector Unknown 1925-5-17 1740 Butte Marysville Buttes. Comment
  HSC32640  Lupinus bicolor Dave Knorr 1974-4-20 130 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  CHSC31153  Lupinus latifolius var. columbianus M. S. Taylor 1978-7-21 1822 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC84644  Lupinus microcarpus var. densiflorus Matt Quinn 2001-4-29 51 Butte Found on gravel bar on Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CHSC79742  Lupinus nanus G. F. Hrusa; T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada Flora - Plumas National Forest. Roadside colony along Hwy 162 near entrance to Rogers Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1250 Comment
  JEPS119847  Lupinus nanus var. latifolius Lowell Ahart 2012-3-23 17793 Butte About 250 yards east of Big Chico Creek, about 150 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC40601  Lupinus pachylobus J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1962 Butte Common on open annual grasslands north of Kunkle Reservoir, e of Pentz Rd., s of Paradise. 457 Comment
  CHSC83987  Lupinus pachylobus Lowell Ahart 2003-4-8 10043 Butte About 40 yards and in the small canyon west of the tall Digger Pine on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 314 Comment
  UC865362  Lupinus pachylobus A. A. Heller 1938-4-23 15048 Butte on the Feather River Highway between the Las Plumas Road and summit; on the Feather River Highway Comment
  UCD109577  Lupinus stiversii Joseph M. DiTomaso 1976-5-23 467 Butte Lake Oroville, peninsula on south side. 274 Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  RSA43304  Lupinus vallicola subsp. vallicola W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  CHSC52705  Luzula cascadensis L. P. Janeway 1987-6-13 2207 Butte Along Dogwood Creek; road to Mayaro 2.4 mi E of Concow Road. 990 Comment
  UC1609496  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  CHSC96839  Luzula macrantha Lowell Ahart 2007-5-29 13951 Butte On the north side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  SEINET10472488  Luzula subsessilis Mary Susan Taylor 1979-3-31 Taylor 1962 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  SEINET10905122  Luzula subsessilis Mary Susan Taylor 1976-4-24 Taylor 1076 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  SEINET10498036  Lycopus americanus Lowell Ahart 1991-9-14 Ahart 6717 Butte On the edges of a ditch, between the two large reservoirs, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC62120  Lythrum hyssopifolia B. Castro 1987-5-28 125 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  SEINET13711409  Lythrum hyssopifolia Lowell William Ahart, Lowell William Ahart 1999-1 8169 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CDA5125  Lythrum salicaria L. Ahart 2000-7-18 8598 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC84026  Lythrum tribracteatum Lowell Ahart 2003-6-23 10311 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC342654  Madia citriodora Bruce G. Baldwin; Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, south side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342722  Madia elegans Clarence R. Quick 1952-7-1 52 -130 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  UCD134232  Madia elegans M. Vincent 1963-6-6 370 Butte Nelson Bar Road at PGE. Comment
  JEPS119913  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10938055  Madia elegans subsp. densifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4116 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC344323  Madia exigua John Thomas Howell 1967-6-22 42613 Butte Magalia 701 Comment
  CHSC113512  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC37124  Madia gracilis L. Ahart 1982-9-13 3826 Butte Along dirt rd which is along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC342965  Madia gracilis Lowell Ahart 1978-5-30 s.n. Butte Near North Honcut Creek, 3 miles NE of Honcut 50 Comment
  CHSC27220  Magnolia soulangeana P. Moyer 1972-3-2 97 Butte Front lawn Bidwell Mansion. 60 Comment
  SEINET10833525  Mahonia dictyota Mary Susan Taylor 1981-4-8 Taylor 3513 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  CAS-BOT-BC347383  Malacothrix floccifera Lowell Ahart 1984-7-19 4723 Butte Above the dirt road that is about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC43733  Malus sylvestris Vernon Oswald 1987-4-21 2337 Butte Hwy 32 just n of the 37.0 mi road marker, ca. 1 mi s of Lomo. On the edge of the road. 1158 Comment
  POM85083  Malva nicaeensis C. C. Bruce 1897-04 1919 Butte [name of locality illegible] Comment
  CHSC101673  Marah watsonii Lowell Ahart 2009-4-26 15648 Butte On the east side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UC1609423  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte at Camp 18 Camp 18 1158 Comment
  CAS-BOT-BC67816  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  JEPS110231  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC36305  Matricaria discoidea M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC34400  Meconella californica R. N. Bowman 1981-5-21 2083 Butte East-facing slope, s bank of Butte Creek, .1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  SEINET10476232  Meconella californica Mary Susan Taylor 1980-4-6 Taylor 2459 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  UCD106759  Medicago arabica A. A. Heller 1915-5-2 11864 Butte Hills 12 miles northeast of Chico near Rock creek. Comment
  CHSC950  Medicago lupulina L. Nelson 1935-5-23 Butte Salmon Hole. 152 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
  CDA4217  Medicago polymorpha T. C. Fuller 1962-5-17 8702 Butte Highway 99E at Cana Highway, ca. 10 miles north of Chico. 0 Comment
  SEINET12155149  Medicago sativa P. L. Ricker 1912-1 3920 Butte Chico Comment
  CHSC113424  Melica aristata Lowell Ahart 2014-7-7 19559 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC88189  Melica aristata Lowell Ahart 2004-7-23 11299 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
  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
  CHSC96877  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  UCD86345  Melica bulbosa Copeland 1931-6-22 606 Butte Jonesville. 609 Comment
  CHSC60592  Melica geyeri Vernon H. Oswald; Lowell Ahart 1993-4-19 5282 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Along the lower part of the trail between the creek and the lookout. 719 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC93734  Melica torreyana Lowell Ahart 2006-5-19 12632 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CHSC36549  Melilotus albus L. Ahart 1982-7-10 3670 Butte On bottm of a dry duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UCD107993  Melilotus albus L. Ahart 1982-7-10 3670 Butte 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Comment
  CHSC102727  Melissa officinalis Lowell Ahart 2009-6-19 15949 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC43840  Mentha canadensis B. Castro 1987-8-25 210 Butte In midstream Butte Ck ca. 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  CHSC51266  Mentha canadensis Lowell Ahart 1990-10-3 6622 Butte Growing on the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek bridge across Lake Oroville. 259 Comment
  CHSC35088  Mertensia ciliata var. stomatechoides R. Schlising; R. Banchero, K. Tarp 1981-8-4 4184 Butte Extreme N part of county, E of Jonesville; in meadow along Willow Creek at crossing of Humbug Road. 1844 Comment
  UCD134508  Micropus californicus E. H. Stanford 1940-4-14 s.n. Butte Morrison Ravine at Cherokee. Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  CHSC392  Micropus californicus var. californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CAS-BOT-BC348467  Micropus californicus var. californicus A. A. Heller; H. E. Brown 1903-5-6 5460 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC101080  Microseris acuminata Lowell Ahart; John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC31604  Microseris acuminata L. Ahart 1978-5-1 1700 Butte Peter Ahart Ranch, Honcut. Along edge of wash. 50 Comment
  CAS-BOT-BC348875  Microseris douglasii subsp. douglasii Lowell Ahart 1976-4-14 s.n. Butte Peter Ahart Ranch. Honcut Comment
  RSA181843  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte Low spot along the Red Bluff - Chico road, a few miles northeast of Chico Comment
  SEINET11807772  Microseris douglasii subsp. tenella Unknown 1985-1 4888 Butte Peter Ahart Ranch, about 2 mi N & 2 mi E of Honcut, aobut 12 mi S of Oroville 50 Comment
  CHSC40487  Microseris lindleyi Lowell Ahart 1985-4-29 4883 Butte Along the 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
  CHSC103689  Microsteris gracilis Lowell Ahart 2010-4-30 16599 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC31775  Microsteris gracilis L. Ahart 1975-3-26 723 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SD87566  Microsteris gracilis E. B. Copeland 1931-6-29 Butte Jonesville. In sandy open spaces by Butte Creek. 1500 Comment
  SEINET12326954  Microsteris gracilis Unknown 1981-1 23 Butte 8 km SE of Chico and 8 km NW of Paradise 125 Comment
  SEINET9800583 Image available Mimetanthe pilosa Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UC518026  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1933-5-26 33186 Butte 5 mi e Oroville; Feather River canyon 152 Comment
  UC600647  Mimulus bicolor E. B. Copeland 1931-5-9 Butte Jonesville Comment
  RSA0119189  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CDA13864  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-7 13722 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  UC103740  Mimulus glaucescens Mrs. R. M. Austin 1890-1 159 Butte Little Chico Canyon Comment
  JEPS104638  Mimulus guttatus Lowell Ahart 2003-7-23 10438 Butte Around the margins of ponds, Oroville Wildlife Area, ca 1/4 mi w of Pacific Heights Rd, ca 5 mi (air) sw of Oroville. 26 Comment
  RSA718738  Mimulus guttatus L. Ahart 2006-7-25 13063 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  UC196160  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  SEINET8340981  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  JEPS86980  Mimulus layneae David M. Thompson 1988-6-8 937 Butte 0.2 mi e Zinc road (s jct) (along Bald Rock Road) 750 Comment
  UC1564742  Mimulus lewisii V. Oswald and L. Ahart 1989-8-15 3945 Butte 1.2 mi (air) n Philbrook Reservoir (Soda Ridge Rd. 1.4 mi w of its junction with Coon Hollow Rd., between the road and a marshy lake visible from the road) 1780 Comment
  JEPS11922  Mimulus microphyllus F. W. Pennell, A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  JEPS122032  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  JEPS14948  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS86934  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte nw De Sabla (0.25 mi ne of Doe Mill Road along Garland Road) 600 Comment
  SEINET10830521  Mimulus torreyi Mary Susan Taylor 1978-7-21 Taylor 1813 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  UCD122930  Mimulus torreyi L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UC1468291  Mimulus tricolor L. Ahart 1983-6-6 4029 Butte 2.5 mi ne Honcut; Peter Ahart Ranch 50 Comment
  SEINET10570288  Mimulus tricolor Lowell Ahart 1983-6-6 Ahart 4029 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC20118  Minuartia californica M. S. Taylor 1975-4-26 522 Butte In vernal pool, on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC4074  Minuartia californica H. E. Lindahl 1967-3-25 15 Butte Ca 40 ft. s of intersection of Durham-Oroville highway and Chico-Oroville highway. 60 Comment
  UC1125782  Minuartia californica J. E. Sowder 1935-6-10 601 Butte 6 mi se Durham; Chico Quadrangle Comment
  UCD98228  Minuartia cismontana G. F. Hrusa 1989-4-15 5922 Butte North Table Mountain. On west side of Cherokee Mountain Road. 300 Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  RSA424440  Minuartia douglasii Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -11 Butte Magalia, near Skyline road to Paradise 640 Comment
  POM161689  Mitella pentandra E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC1562289  Mollugo verticillata Lowell Ahart 1990-7-4 6538 Butte about 1/2 sw of Enterprise Bridge (across Lake Oroville, below the high water line of Lake Oroville) 243 Comment
  CAS-BOT-BC435070  Mollugo verticillata Lowell Ahart 1984-8-19 4787 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville 40 Comment
  SEINET12329572  Monardella lanceolata L. Ahart, Ahart, P. 1984-1 4652 Butte Along Hwy 40, now called Dark Canyon Rd, ca 2mi E of Old Yankee Hill, ca 16mi NE Oroville 450 Comment
  RSA769594  Monardella odoratissima subsp. pallida L. Ahart 2010-9-28 17247 Butte East side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  UC2035956  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  POM193438  Monardella odoratissima subsp. pinetorum E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1550 Comment
  CHSC102512  Monardella sheltonii Lowell Ahart 2009-5-30 15982 Butte Open area west of the Guardian Rock Trail, about 60 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  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
  CHSC4631  Monardella sheltonii R. Carter 1996-6-15 445 Butte 3/4 mi. S of intersection of 21N40 and Oroville-Quincy Rd. on W side of Oroville-Quincy Rd. 701 Comment
  HSC96903  Monardella sheltonii L. Ahart 2006-6-9 12655 Butte E side of Bardees Bar Rd. 1/8 mile W of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) SW of Pulga 386 Comment
  CAS-BOT-BC220308  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of unnamed canyon SE of Neal Road 79 Comment
  UCD125266  Monardella venosa James D. Jokerst 1992-5-19 3355 Butte Unmaned canyon north of Nugen Canyon on the south side of Neal Road, near the Butte County Sanitary Landfill. 76 Comment
  CHSC65567  Monardella villosa subsp. villosa R. Banchero 1980-6-5 193 Butte Ca 4.3 mi N of Pinkston Cyn/ Hwy 70 jcn, near bridge on Hwy 70 over Feather River, on road edge above river and near a seep. 426 Comment
  JEPS100227  Monardella villosa subsp. villosa Dean W. Taylor 2002-7-3 18218 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  UC1093944  Monardella villosa subsp. villosa Lewis S. Rose 1955-6-15 55105 Butte 6 mi SE of Paradise on Pentz Road 426 Comment
  UC454124  Monardella villosa subsp. villosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC444883  Montia fontana John Thomas Howell 1976-4-1 51532 Butte Table Mountain, 4 to 5 miles north of Oroville 304 Comment
  JEPS119846  Montia fontana subsp. amporitana Lowell Ahart 2012-3-23 17792 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10572665  Montia linearis Mary Susan Taylor 1981-5-22 Taylor 3801 Butte T23N R4E sw/sw sec 24, Pulga quad. In Flea Valley, ca. 100 ft E of jct of Ponderosa Way and turnoff to Sawmill Peak, ca. 2 ft N of Sawmill Peak Rd, ca. 4 air mi E of Magalia. 3700 ft. 1128 Comment
  CHSC34699  Montia parvifolia M. S. Taylor 1981-5-7 3634 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CAS-BOT-BC260533  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  CAS-BOT-BC260541  Muhlenbergia filiformis Clarence R. Quick 1963-7-16 63 54 b Butte Section Corner Meadow, E of Pulga, Feather River Canyon 1463 Comment
  POM196131  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  SEINET10599802  Muhlenbergia filiformis A. Arthur Heller 1917-7-28 Heller 12833 Butte Moist open places in the yellow pine forest, Butte Meadows. Douglas fir, white fir, and incense cedar are also plentiful, Ceanothus cordulatus and Uva-ursi common shrubs. 1280 Comment
  CAS-BOT-BC274935  Muhlenbergia rigens Lowell Ahart 1982-10-15 3896 Butte N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC28540  Muhlenbergia rigens M. S. Taylor; J. D. Jokerst 1979-10-13 2253 Butte On n side of Jordan Hill Rd (Ponderosa Way on some maps) ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  SEINET10901847  Muhlenbergia rigens Mary Susan Taylor 1975-10-4 Taylor 963 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
  CAS-BOT-BC392248  Myosurus John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  CHSC46269  Myosurus apetalus var. borealis Vernon Oswald 1989-4-19 3742 Butte Wurlitzer Unit, Vina Plains Preserve. On the s side of Singer Creek. 57 Comment
  CAS-BOT-BC83264  Myosurus minimus Lowell Ahart 1979-4-6 s.n. Butte 3 miles northwest of Bangor. Along North Honcut Creek. Comment
  CHSC10543  Myosurus minimus Lowell Ahart 1971-4-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31635  Myriophyllum hippuroides L. Ahart 1976-7-15 1173 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 60 Comment
  SEINET946127  Myriophyllum hippuroides Verne Grant, Herbert L. Mason 1946-1 13014 Butte Canal near big pond on Sacramento Outing Club. Comment
  CHSC85417  Myriophyllum spicatum John Dittes 2003-10-8 844 Butte Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 36 Comment
  POM312985  Najas graminea H. L. Mason, Verne Grant 1946-8-15 13047 Butte #833 Irrigation Ditch, near caretaker s house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC82616  Narthecium californicum L. P. Janeway; B. Castro 2002-7-7 7606 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  SEINET12050272  Narthecium californicum L. Ahart, Ahart, P. 1984-1 4760 Butte about .5mi E of Bald Mt., about 5mi NE of Stirling City 1750 Comment
  CDA34496  Nasturtium officinale Stewart, Michael 2011-4-26 PDR# 1373326 Butte In the vicinity of Gridley, on Locust Street near Georgia and Idaho Street. Comment
  UC600662  Navarretia capillaris H. F. Copeland 1932-7-24 Butte Jonesville Jonesville (by small stream running down from the w to Butte Creek meadows) Comment
  UC133706  Navarretia divaricata Mrs. R. M. Austin Jul 1896 827 Butte Sutton House Comment
  JEPS100229  Navarretia filicaulis Dean W. Taylor 2002-7-3 18217 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  JEPS107910  Navarretia filicaulis Lowell Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  JEPS120502  Navarretia filicaulis B. Castro, L. P. Janeway 2004-6-13 1469 Butte Northern High Sierra Nevada. Along Old Forebestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. Comment
  UC133843  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  UCD77884  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd 54 Comment
  UC600671  Navarretia intertexta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  CHSC20897  Navarretia leptalea M. S. Taylor 1975-8-31 883 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  SJSU11523  Navarretia leucocephala J. B. Willis Jr. 1969-5-3 Butte by Cherokee Rd 8 mi NE of Oroville Comment
  CAS-BOT-BC230475  Navarretia nigelliformis var. nigelliformis David D. Keck 1933-5-30 2415 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains Comment
  CAS-BOT-BC232627  Navarretia pubescens Lewis S. Rose 1963-6-5 6314 Butte 3 miles W of Palermo 45 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
  CHSC36705  Navarretia tagetina D. H. Ikeda 1980-5-10 358 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  SEINET3860241  Navarretia tagetina Leigh A. Johnson 2004-5-15 04 -064 Butte Eastbound from Chico on Skyway Drive, in 10 meters between large pullover area and fence, 4.2 miles west of Skyway crossroad; 5.3 miles west of Neal jct.; 0 209 Comment
  JEPS73705  Navarretia viscidula L. R. Heckard 1968-5-30 1927 Butte e Chico; Santes Ranch, Stilson Canyon Comment
  RSA13527  Navarretia viscidula H. F. Copeland 1932-6-24 s.n. Butte Near Hog Springs, about 5 miles north of Chico, on the Humboldt Road Comment
  UC102223 Image available Nemacladus interior Elisha Brooks Butte Enterprise; ; Enterprise, Butte Co. Comment
  CHSC33375  Nemophila heterophylla Steven Azevedo 1980-4-16 13 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC42000  Nemophila heterophylla Lowell Ahart 1973-4-15 206 Butte Along Swedes Flat road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC84917  Nemophila heterophylla W. Dobson 1980-5-25 21 Butte Ca. in Wagner Valley. 542 Comment
  RSA325124  Nemophila heterophylla M. S. Taylor 1981-3-16 3411 Butte East side of Truex Road, ca. 0.5 miles south of its junction with Highway 70, ca. 7 miles north of Oroville. 305 Comment
  SEINET12334039  Nemophila heterophylla L. P. Janeway 1988-1 2964 Butte near the road to French Cr, 0.9 mi S of Coyote Gap 1189 Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  CHSC109122  Nemophila pedunculata Lowell Ahart 2012-3-23 17789 Butte On and around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC24718  Nemophila pedunculata C. E. Stopher 1976-4-3 16 Butte 9.7 km se of Chico via Honey Run road. 100 m sw of covered bridge on s side of canyon. 122 Comment
  SD7923  Notholithocarpus densiflorus R. M. Austin Butte Comment
  RSA285937  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte Butte County,Naturalized in reservoir on N side of Nelson W road just E of Chico Butte City Road, Dodge Land Comment
  UCD18873  Odontostomum hartwegii Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 182 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
  SEINET12342944  Odontostomum hartwegii Unknown 1936-1 13214 Butte along Mud Creek near Chico Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  JEPS120001  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  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-BC500247  Orobanche uniflora subsp. occidentalis Lowell Ahart 1965-4-11 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC50846  Orthocarpus cuspidatus subsp. cryptanthus Vernon Oswald 1990-7-23 4384 Butte Opening in forest at the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd at Humbug Summit. 2011 Comment
  RSA31738  Orthocarpus erianthus A. A. Heller 1938-3-27 15003 Butte Near the Chico Airport. 107 Comment
  SEINET10549670  Orthocarpus erianthus Mary Susan Taylor 1980-3-1 Taylor 2325 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  RSA178636  Orthocarpus lithospermoides var. bicolor A. A. Heller 1927-5-10 14370 Butte From the type station, in a grassy meadow near Clear Creek Post Office Comment
  CAS-BOT-BC316892  Packera eurycephala var. lewisrosei John Thomas Howell 1951-6-26 27523 Butte near Pulga 365 Comment
  CHSC39671  Packera eurycephala var. lewisrosei Lowell Ahart 1983-6-21 4088 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC11831  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CHSC63382  Packera subnuda var. subnuda V. H. Oswald; L. P. Janeway, L. Hanson 1994-6-22 6349 Butte Meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 Comment
  CHSC38838  Panicum acuminatum var. acuminatum Vernon Oswald 1983-5-31 587 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 200 ft e of Day Camp. 91 Comment
  CHSC94765  Panicum acuminatum var. acuminatum Lowell Ahart 2006-9-11 13307 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC42925  Panicum capillare Lowell Ahart 1987-7-3 5776 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC66462  Panicum dichotomiflorum subsp. dichotomiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7755 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC26446  Paspalum dilatatum P. Moyer 1971-10-24 49 Butte CSUC Campus. South bank of Chico Ck. behind Archeology Bldg. 'B'. 60 Comment
  CHSC43276  Paspalum dilatatum Lowell Ahart 1987-8-30 5859 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
  SEINET10453507  Paxistima myrsinites Mary Susan Taylor 1981-5-29 Taylor 3811 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi SW of Coyote Gap, ca. 16 air mi N of Oroville. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 Comment
  SEINET10939921  Paxistima myrsinites Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5224 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  CHSC61709  Pectiantia pentandra Lowell Ahart 1993-8-8 7149 A. Butte On bottom of stream, in area mined for gold, about 1/2 mile north-west of Lewis Flat, about 3/4 mile north-west of the Sly Creek Dam. 1097 Comment
  UCD80146  Pectocarya pusilla CNPS SN Foothill Team 2005-3-22 SNFN 0063 a Butte CDPR Oroville State Recreation Area, just south of a state park utility road out to water tanks. This road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  CHSC64224  Pedicularis attollens S. C. Morey 1983-7-23 583 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 430 Comment
  SEINET10529978  Pellaea Mary Susan Taylor 1983-1-17 Taylor 5217 A Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC97737  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  SEINET10470231  Pellaea brachyptera Lowell Ahart 1985-6-17 Ahart 5053 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SD111898  Pellaea mucronata Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-8 3316 Butte North Honcut Creek on Peter Ahart Ranch ca 2I(c) miles NE of Honcut between Marysvill and Oroville 45 Comment
  SEINET10470235  Pellaea mucronata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4855 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET10529809  Pellaea mucronata Mary Susan Taylor 1980-3-1 Taylor 2347 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
  CHSC97017  Pellaea mucronata var. mucronata L. P. Janeway 2007-6-19 9064 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  JEPS87422  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 Comment
  CHSC44728  Penstemon azureus R. Banchero 1980-6-17 250 Butte Along Coutolenc Rd 1.2 mi N of its lower jct with the Skyway, 1.1 mi S of the Paradise Lake turnoff. 646 Comment
  NY571127  Penstemon azureus var. angustissimus A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road, 3 miles from Chico at the lower limit of the digger pine belt Comment
  CHSC3360  Penstemon heterophyllus var. purdyi M. Gregg 1966-5-7 162 Butte 3 miles north east of the Skyway on Humbug Rd. Comment
  SBBG7173  Penstemon laetus H. and M. Dearing 1938-6-20 2049 Butte 20 mi NE of Chico Comment
  CDA13728  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1997-6-27 13906 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC43075  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3818 Butte Nimshew Road, 1.0 mi S of Nimshew Cementary. 731 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
  CAS-BOT-BC245638  Penstemon personatus Robert Banchero 1981-7-19 609 Butte 1 mile NE of Bald Mt. lookout on Bald Mt. 1780 Comment
  CHSC30716  Pentagramma triangularis M. S. Taylor; R. Schlising 1980-7-6 3079 Butte On s side of Old Humboldt Rd, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC32728  Pentagramma triangularis M. S. Taylor 1981-4-8 3507 Butte N side of logging landing site just w of Power lines, ca. 0.5 mi w of its jct with Ponderosa Way (Rim Rdm rd to Flea Valley), ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  SEINET12318334  Pentagramma triangularis D. A. Durham 1978-1 6 Butte S slope Butte Creek, near Covered Bridge on Honeyrun Road, 6.5 mi SE of Skyway-Hwy 99 Jct, at Chico 122 Comment
  CAS-BOT-BC77132  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-7-29 4241 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CAS-BOT-BC77135  Pentagramma triangularis subsp. semipallida Lowell Ahart 1987-5-12 5637 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC29006  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-8 2374 Butte In Pulga, ca. 28 mi ne of Oroville. 487 Comment
  CHSC30302  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-5-27 2680 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CAS-BOT-BC77133  Pentagramma triangularis subsp. semipallida Lowell Ahart 1976-7-7 s.n. Butte Near Little North Fork of Feather River. 50 Comment
  RSA769682  Pentagramma triangularis subsp. triangularis L. Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  UC1390033  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5987 Butte 7 mi s Paradise Comment
  CHSC40215  Perideridia lemmonii Lowell Ahart 1985-6-30 5083 Butte Near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET12121858  Perideridia oregana Unknown 1985-1 5061 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yards S of dirt road 975 Comment
  CHSC25435  Perideridia parishii subsp. latifolia Hayes; Warner 1977-9-11 73 Butte Ca. 10 m n of Humboldt Rd., Ca. 6.9 mi from the junction of Humboldt Rd. with Hwy 32. 1219 Comment
  CHSC40242  Perideridia parishii subsp. latifolia Vernon Oswald 1985-6-20 1857 Butte North end of Snag Lake. 1706 Comment
  CHSC50682  Persicaria hydropiper Lowell Ahart 1990-5-25 6493 Butte On the sides of a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC413706  Persicaria hydropiper Lowell Ahart 1982-10-6 3846 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC1348  Persicaria maculosa D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CAS-BOT-BC419180  Persicaria maculosa Herbert L. Mason; Verne Grant 1946-9-4 13111 Butte 833 Canal, West Gridley Road Comment
  CHSC72252  Persicaria punctata Lowell Ahart 1998-9-11 8055 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC101313  Petrorhagia dubia Lowell Ahart 2009-4-22 15573 Butte West side of Guardians Trail, south side of the 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
  CHSC51524  Phacelia cicutaria J. D. Jokerst 1985-4-23 2262 Butte Top of North Table Mountain. East edge of Beatson Hollow near the second drainage entering from the east. 365 Comment
  CHSC110127  Phacelia cicutaria var. cicutaria L. P. Janeway 2012-3-21 10797 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
  CHSC52403  Phacelia egena R. Smallwood 1969-4-25 19 Butte Butte Cr Cyn; Honey Run Rd at the Covered Bridge; 15 yds NW of old bridge. 137 Comment
  CHSC721  Phacelia egena P. Delaplane 1965-4-8 57 Butte Under overhang of cliff above creek on Richardson's Ranch. Ca 1.2 mi from Chico Municipal Airport on Richardson Springs Rd. Ca. 1/4 mi inside gate. 274 Comment
  RSA31961  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  UC600782  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville Comment
  UC1051795  Phacelia mutabilis L. R. Heckard 1951-8-7 182 Butte between Chaparral and Butte Meadows Comment
  SEINET13095392  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte 2 miles west of Arch Rock Tunnel. Comment
  CHSC110226  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  SEINET10658546  Phalaris brachystachys Mary Susan Taylor, James D. Jokerst 1979-11-11 Taylor 2279 Butte In wet embankment of irrigation ditch, on W side of Goodspeed Watt Rd, ca. 6 mi S of Chico. Associates: Lactuca serriola var. integrata, Polypogonum aviculare, Lactuca serriola 34 Comment
  CHSC61545  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte Rice field, east of the Cherokee Canal and north of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CAS-BOT-BC77372  Philadelphus lewisii Lowell Ahart 1984-6-8 4659 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles northwest of Forbestown 370 Comment
  CAS-BOT-BC77373  Philadelphus lewisii A. A. Heller 1915-5-17 11875 Butte Canyon of Chico Creek 5 miles east of Chico; about 50 miles to the south, probably along the Bear River Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  UC1127341  Philadelphus lewisii J. E. Sowder 1933-5-26 78 Butte 1/2 mi w Yankee Hill; Chico Quadrangle Comment
  CAS-BOT-BC250866  Phleum pratense Lowell Ahart 1987-7-8 5795 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  UC880352  Phlox gracilis A. A. Heller 1915-6-27 12041 Butte Jonesville Sierra Nevada 1676 Comment
  UC880606  Phlox speciosa Helen M. Edwards Jun 1917 Butte De Sabla Comment
  RSA325114  Phoradendron bolleanum var. densum M. S. Taylor 1975-9-19 918 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 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
  CHSC78908  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC141248  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2624 Butte Little Bald Rock 335 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
  UC1194602  Phoradendron villosum Del Wiens 1960-6-15 2726 Butte near Paradise 152 Comment
  CHSC34028  Physocarpus capitatus L. Ahart 1981-7-7 2921 Butte On bottom of a stream, ca. 1/2 mi w of the Oroville-Forbestown Rd on the Black Bart Rd, w of Forbestown. 700 Comment
  CHSC87780  Physocarpus capitatus Paul Maslin 2004-5-6 32 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). On Big Chico Creek flood plain. UTM: 10609800E 4410330N. 243 Comment
  NY43557  Physocarpus capitatus S. Bianco 1995-10-28 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  CDA34619  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  JEPS117523  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  JEPS117720  Pilularia americana Lowell Ahart 2010-6-9 16779 Butte About 30 yards south of the poor dirt road, about 70 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  JEPS99057  Pilularia americana Lowell Ahart 2002-4-24 9525 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) SW of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  SEINET10530649  Pinus attenuata Mary Susan Taylor 1981-4-16 Taylor 3548 Butte T21N R5E sw sec 24, Brush Creek quad. Both sides of Rd 21N80, ca. 1 mi NW of its jct with Zink Rd, ca. 1.5 mi NW of Big Bald Rock, ca. 2 air mi E of Lake Madrone. Yellow Pine Forest; 2900 ft. 884 Comment
  CHSC110234  Pinus jeffreyi L. P. Janeway 2012-10-11 11074 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  RSA4589  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  UC398882  Pinus lambertiana E. B. Copeland 1929-7-10 332 Butte Jonesville; in forest 1600 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
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  CHSC88240  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, 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
  UC1586560  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte sw of Oroville Dam (along the Dan Beebe Trail, between Canyon Drive and Oroville Dam Blvd East); Lake Oroville Recreation Area 213 Comment
  CHSC65868  Piperia transversa L. P. Janeway 1995-7-15 4856 Butte Watson Ridge, about 1.7 mi east-northeast of its western end. Along Road 21N25A. 1097 Comment
  CHSC79625  Piperia transversa G. F. Hrusa; T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 820 Comment
  UC177514  Piperia transversa H. M. Hall 1914-7-29 9799 Butte Butte Meadows 1371 Comment
  CHSC68710  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Below the cement of the low water crossing, Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC114949  Plagiobothrys Lowell Ahart 2015-3-10 19944 Butte 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  UCD120782  Plagiobothrys bracteatus Michael A. Vincent; Ethan H. Freid 1998-4-6 8131 Butte Table Mountain. Comment
  UC78035  Plagiobothrys canescens Mrs. R. M. Austin Mar 1896 Butte Comment
  UC725762  Plagiobothrys fulvus A. A. Heller 1926-4-19 13922 Butte along road to Pentz about 2 mi from junction with the Chico-Oroville road Comment
  CHSC44478  Plagiobothrys fulvus var. campestris Lowell Ahart 1988-5-12 5993 Butte Pasture field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  POM368935  Plagiobothrys fulvus var. campestris H. F. Copeland 1929-4-5 1128 Butte Near Chico. Comment
  CHSC103749  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-22 16715 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
  SD122572  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1984-5-7 4590 Butte 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise. 600 Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  SEINET12326942  Plagiobothrys nothofulvus J. D. Nishball 1982-1 6 Butte ca 10 mi SE of Chico, 1.5 mi E of covered bridge, S side of Castle Rock ridge, Butte Creek Canyon 201 Comment
  CHSC67186  Plagiobothrys scriptus James D. Jokerst 1989-4-8 3091 Butte North Table Mtn., N and adjacent to Cherokee Rd. at E edge of mesa. Roadside area next to metal corral. Comment
  CHSC48001  Plagiobothrys shastensis Vernon Oswald 1983-4-4 263 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 Comment
  UC52288  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC103731  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC117424  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  JEPS107340  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-4-2 11682 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
  RSA0114655  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2015-5-5 20137 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CHSC103747  Plagiobothrys stipitatus var. stipitatus Lowell Ahart 2010-5-22 16709 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
  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
  RSA754389  Plagiobothrys tenellus L. Ahart 2009-4-22 15571 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC66153  Plagiobothrys tenellus A. A. Heller and H. E. Brown 1902-5-9 5509 Butte near Clear Creek; Berry Canyon Comment
  UC726653  Plagiobothrys tenellus A. A. Heller 1938-4-14 15037 Butte roadside bank between Pentz and Cherokee Comment
  CHSC45342  Plantago coronopus Vernon Oswald 1985-4-11 1706 Butte Beside a gravel road at the shooting area in the Oroville Wildlife Area. Comment
  CDA42162  Plantago elongata T. C. Fuller 1958-4-15 5004 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC29120  Plantago erecta M. S. Taylor 1980-4-6 2450 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  JEPS119595  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. Comment
  JEPS119743  Plantago erecta Lowell Ahart 2012-3-23 17778 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC97115  Plantago lanceolata Lowell Ahart 2007-7-27 14393 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
  JEPS108965  Plantago lanceolata Lowell Ahart 2006-9-13 13321 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  SEINET13710809  Plantago virginica Lowell William Ahart, Lowell William Ahart 2000-1 8348 Butte Thermalito Afterbay W of Larkin Rd., 5 Air Mi. SW of Oroville, 140 Ft. (T19N, R3E, sec 27, SW 1/4) 43 Comment
  CHSC51946  Platanthera leucostachys L. P. Janeway 1987-7-5 2444 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  OBI69230  Platanus racemosa Kari Fisher, Bill Fisher 2000-11-10 52 Butte Bidwell Park, along path by 5 mi Rec area 82 Comment
  CAS-BOT-BC91593  Platystemon californicus H. E. Brown 1897-4-15 467 Butte Near Clear Creek. 53 Comment
  CAS-BOT-BC91592  Platystemon californicus Mrs. J. H. Morrison 1952-4-3 s.n. Butte Durham. Comment
  UCD80810  Plectritis ciliosa CNPS SN Foothill Team 2005-3-22 SNFN 0063 c Butte CDPR, Oroville State Recreation Area, just south of a state park utility road out to water tanks; this road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  CHSC87551  Plectritis ciliosa subsp. ciliosa R. D. Fischer 2004-4-7 74 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near end of 10 Mile House Road in mdw. 200 ft south of gated end of park road. 228 Comment
  CHSC103686  Plectritis macrocera Lowell Ahart 2010-4-30 16596 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  UC204921  Poa annua A. A. Heller 1914-3-28 11243 Butte Chico; Sacramento Valley Comment
  CHSC28553  Poa bolanderi M. S. Taylor 1978-7-19 1777 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CDA14074  Poa compressa G. F. Hrusa, T. D. Wilfred 1997-7-3 13957 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Rhizomatous perennial in moist, formerly disturbed areas at lake margin. Comment
  SEINET10901783  Poa gracillima Mary Susan Taylor 1980-6-14 Taylor 2877 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC255972  Poa pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  CAS-BOT-BC255974  Poa pratensis Lowell Ahart 1987-5-6 5560 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10508449  Poa pratensis Lowell Ahart 1983-5-13 Ahart 3985 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CAS-BOT-BC236373  Poa secunda subsp. secunda Lowell Ahart 1977-6-16 s.n. Butte Along the banks of N Honcutt Creek. Peter Ahart Ranch, Honcut 50 Comment
  CHSC39645  Poa secunda subsp. secunda Lowell Ahart 1983-4-10 3930 Butte On the sides and bottoms of vernal pools, near the steel power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  UCD91615  Poa secunda subsp. secunda A. A. Heller 1915-6-10 11956 Butte Little Summit in the Sierra Nevada. 1432 Comment
  SEINET7072553  Pogogyne zizyphoroides A. G. Vestal 1963-5-7 s.n. Butte About 1.7 miles west of Honcut on Ahart Road. Coordinate datum: NAD 27. UTM Zone 10, 627360mE, 4356415mN. Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  CDA25320  Polanisia dodecandra subsp. trachysperma L. Ahart 2002-9-27 9938 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC46584  Polemonium occidentale V. Oswald; L. Ahart 1989-7-21 3871 Butte Near the junction of Willow and Colby creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. On the west border of the meadow near Humboldt Rd. 1490 Comment
  CHSC27054  Polycarpon tetraphyllum Lowell Ahart 1978-6-2 1751 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  CHSC48259  Polycarpon tetraphyllum Vernon Oswald 1988-5-8 3299 Butte Fernandez land grant. Oroville Wildlife Area at the Palm Ave. entrance. Near a pond. 30 Comment
  CHSC109070  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC70809  Polygala cornuta var. cornuta B. Castro 1995-7-20 587 Butte Ca 2 air mi NW of Feather Falls, at western end of Watson Ridge, at W end of USFS Rd 21N25 along trail. 1005 Comment
  JEPS115106  Polygonum arenastrum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15409 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  SEINET10871688  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4364 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
  CHSC27247  Polygonum aviculare P. Moyer 1972-3-4 103 Butte CSUC campus. 2nd and Ivy parking lot. 60 Comment
  CHSC29772  Polygonum bidwelliae M. S. Taylor; R. A. Schlising, L. Ahart 1980-5-31 2769 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC45459  Polygonum bidwelliae Lowell Ahart 1979-5-29 1896 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  JEPS115656  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  CHSC39043  Polygonum bolanderi R. A. Schlising 1980-7-25 3916 Butte N part of county, along Humboldt Road, 1.9 mi NE jct with highway 32 at Lomo. 1356 Comment
  RSA781349  Polygonum bolanderi Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 148 Butte Humboldt road. Comment
  JEPS115374  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC85631  Polygonum californicum Mrs. R. M. Austin 1883-1 Butte Chico Comment
  SEINET10479630  Polygonum californicum Mary Susan Taylor 1975-9-19 Taylor 919 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  RSA4393  Polygonum davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. 2100 Comment
  UCR66524  Polygonum douglasii H. F. Copeland 1928-8-18 0318 Butte Jonesville, Butte Creek Canyon 1529 Comment
  SEINET10479342  Polygonum douglasii Mary Susan Taylor 1976-3-6 Taylor 1766 Butte Valley Grassland on Table Mountain, ca. 100 m W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  CHSC58945  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  JEPS117421  Polygonum douglasii subsp. douglasii Lowell Ahart 2010-9-28 17250 Butte On damp soil, about 10 yards west of Big Kimshew Creek, under trees, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  SEINET10838777  Polygonum kelloggii Mary Susan Taylor 1978-7-19 Taylor 1765 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CDA38789  Polygonum lapathifolium L. Ahart 2011-10-29 17725 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  UC1563298  Polygonum lapathifolium unknown 1990-10-3 6613 Butte about 1/8 mi ne Canyon Creek Bridge across lake (below high water line of lake, n side of creek); Lake Oroville, East Fork of Canyon Creek 243 Comment
  SD1173  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, on shaded gravel bars by Butte Creek 1500 Comment
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 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
  CHSC39130  Polygonum polygaloides subsp. kelloggii Robert Schlising; R. Banchero 1980-6-2 3628 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  RSA796043  Polygonum punctatum L. Ahart 2011-10-29 17724 -A Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  UC1191264  Polygonum punctatum Herbert L. Mason and Verne Grant 1946-9-4 13109 Butte West Gridley Rd 833 Canal Comment
  CAS-BOT-BC71858  Polypodium californicum D. E. Nay 1975-4-10 28 Butte ca. 200 m SSW of Covered Bridge on hillside, 6.4 mi ESE of 99E/Skyway jct, Chico 137 Comment
  CAS-BOT-BC71872  Polypodium californicum Lowell Ahart 1987-5-9 5598 Butte along Pulga Road, about 1/2 mile southwest of Bardees Bar, along the North Fork of the Feather River 365 Comment
  CAS-BOT-BC71873  Polypodium californicum Geo. B. Grant 1902-6-1 1026 Butte Siera Madre Mts. Comment
  CAS-BOT-BC71875  Polypodium californicum E. B. Copeland 1902-12-1 s.n. Butte Chico Canyon Comment
  CHSC109672  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC24893  Polypodium calirhiza T. F. Burnham 1976-4-19 19 Butte Ca. 20 ft s of Butte Creek and 0.4 ft w of Covered Bridge, 6.4 mi e of Chico. 115 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC3886  Polypodium calirhiza Gerry Carrauthers 1966-3-7 79 Butte Honeyrun Rd. above old Honeyrun Bridge. Ca. 5 mi. N. W. of city of Paradise. Comment
  CHSC52380  Polypodium calirhiza Louis C. Bock 1987-4-23 12 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  SEINET10929373  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 Butte Riparian woodland along S side of Butte Creek, about 1/4 mi downstream from Honey Run Covered Bridge about 6 mi E of Chico. 122 Comment
  CHSC35659  Polypogon interruptus R. E. Preston 1982-4-22 247 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC50707  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte On the bottom of a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  SEINET3874651  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 Butte Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville.; 0 396 Comment
  CHSC92384  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  UC1609404  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-20 6994 Butte ca. 1 air mi nw of Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  UCD136541  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  UC600816  Porterella carnosula H. F. Copeland 1930-7-28 1314 Butte Jonesville Comment
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  CHSC45585  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2047 Butte Along the rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. 853 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
  CHSC30296  Potentilla glandulosa subsp. reflexa M. S. Taylor 1980-5-27 2648 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CAS-BOT-BC539446  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC13708  Proboscidea lutea M. S. Taylor; K. Stern 1974-10-11 328 Butte Scarce in weed field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CDA6520  Proboscidea lutea E. Remmers 1961-7-5 Butte Oroville; 3350 Oro-Bangor Highway. 0 Comment
  UCSC000640  Prunella vulgaris subsp. lanceolata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC52221  Prunella vulgaris var. lanceolata L. P. Janeway 1987-8-4 2415 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC109174  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, soouth of the path, south of the paved park road,south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  CAS-BOT-BC159919  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  UC1128320  Prunus emarginata P. L. Johannsen 1936-7-16 926 Butte 1 3/4 mi ese of Butte Meadows (Lassen National Forest); Lassen National Forest 1402 Comment
  SEINET10838465  Prunus emarginata Mary Susan Taylor 1976-4-27 Taylor 1095 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC28977  Pseudobahia heermannii R. A. Schlising 1980-3-17 3515 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  CHSC46080  Pseudognaphalium luteoalbum Lowell Ahart 1989-3-25 6196 Butte Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CHSC65682  Pseudognaphalium luteoalbum Vernon H. Oswald 1996-3-22 7256 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CHSC94620  Pseudognaphalium luteoalbum Lowell Ahart 2006-9-11 13276 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
  JEPS107334  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 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
  JEPS117185  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road 125 Comment
  CHSC52014  Pseudostellaria jamesiana L. P. Janeway 1988-6-25 2864 Butte Near Coon Cr and Near Bull Hill Rd 1.0 mi from the Skyway. 1554 Comment
  UC600629  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte between Jones and Willow Creeks (Jonesville); between Jones and Willow Creeks 1524 Comment
  UCD135121  Pseudotsuga menziesii var. menziesii John Thomas Howell 1962-6-15 37434 Butte Sierra Nevada, Magalia. 731 Comment
  SEINET10839136  Psilocarphus brevissimus Mary Susan Taylor 1976-3-23 Taylor 1035 Butte Abundant in Valley Grassland, ca. 1/4 mi N of Pine Creek on Pine Creek-Cana Road, ca. 11 mi N of Chico; with Plagiobothrys scriptus. 61 Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC39509  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC46965  Psilocarphus oregonus Lowell Ahart 1979-5-11 1869 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  POM219438  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  CHSC109235  Ptelea crenulata Robert Fischer 2012-6-8 1057 Butte Seeds were collected within Upper Bidwell Park, south side, adjacent to the Bloody Pin Trail in the city of Chico. The shrubs were growing on a north-facing mixed chaparral/oak hillside. 414 Comment
  CHSC32685  Pteridium aquilinum var. pubescens M. S. Taylor; L. Hanson 1981-3-31 3451 Butte SE side of Spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  CHSC39367  Pteridium aquilinum var. pubescens L. Ahart; P. Ahart 1983-9-21 4463 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC44618  Pteridium aquilinum var. pubescens Vernon Oswald 1983-7-26 915 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 Comment
  CHSC82436  Pterostegia drymarioides Lowell Ahart 2002-5-6 9607 Butte Bulldozed road, on top of the face of the exposed sand mine, east of the very beginning of Schirmer Ravine, about 200 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 243 Comment
  POM183147  Pteryxia terebinthina var. californica H. F. Copeland 1930-7-26 1310 Butte Neighborhood of Jonesville. 1677 Comment
  CHSC106057  Punica granatum Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17043 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico. 74 Comment
  CHSC48495  Pycnanthemum californicum Vernon Oswald 1986-7-7 2184 Butte Millsap Bar Rd. 3.2 mi e of Bald Rd. near Brush Creek. 914 Comment
  CHSC78245  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
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  CHSC43725  Pyrola picta Vernon Oswald 1985-6-24 1862 Butte Paradise Lake, 0.1 mi s of Mosquito Creek on the e side of the lake. 780 Comment
  CHSC51872  Pyrola picta L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3140 Butte Ridge SE trending from Snow Mtn. 2103 Comment
  UC847952  Quercus berberidifolia A. A. Heller 1916-9-8 12649 Butte e of Chico (Ten Mile House) Comment
  UCD45257  Quercus berberidifolia A. E. Wieslander 1927-6-29 s.n. Butte Near Fourteen-mile House, Humboldt road from Chico. Comment
  UCD57254  Quercus chrysolepis G. F. Hrusa; T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada. Immed. E of Holmwood Drive. N of Magalia. Above Little Butte Creek. 750 Comment
  SEINET13953256 Image available Quercus dumosa A. A. Heller 1916-1 12650 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  UCD45944  Quercus durata D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  CHSC100493  Quercus lobata Lowell Ahart; John Dittes 2008-11-14 15450 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  POM106177  Quercus wislizeni C. C. Bruce 1897-05 1798 Butte Forest- Ranch. Comment
  UC57375  Quercus wislizeni H. E. Brown 1896-10-9 109 Butte near Clear Creek 53 Comment
  JEPS110548  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC31877  Ranunculus aquatilis var. hispidulus L. Ahart 1974-6-3 468 Butte In wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41528  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-27 356 Butte N part of county, n of Philbrook Reservoir, at Coon Hollow. In stream. 1706 Comment
  JEPS84978  Ranunculus bonariensis var. trisepalus Barbara Ertter with Lowell Ahart 1986-4-13 5901 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  CHSC52780  Ranunculus canus Vernon Oswald 1983-3-19 198 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 225 Comment
  CHSC61607  Ranunculus canus A. A. Heller; H. E. Brown 1902-5-3 5449 Butte Near Nelson. Comment
  SEINET12087455  Ranunculus canus A. A. Heller 1926-1 13916 Butte type collected by Hartweg, probably in the vicinity of Chico Comment
  CHSC111374  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte On dark clay soil, on the bottom of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  CHSC46068  Ranunculus muricatus Kirsten Tarp 1983-5-31 286 Butte Nelson, in lawn in front of the Nelson Post Office. 36 Comment
  UC204874  Ranunculus occidentalis A. A. Heller 1914-3-19 11215 Butte Canyon of Big Chico Creek 76 Comment
  CHSC52691  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 255 Butte S part of county near Bangor Hwy nw of Bangor. 182 Comment
  JEPS98314  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay S side of access road to boat ramp, W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET12080672  Ranunculus pusillus Unknown 1974-1 444 Butte Peter Ahart Ranch, about 2 mi N and 1/2 mi E of Honcut, about 12 mi S of Oroville 37 Comment
  CHSC53980  Ranunculus sceleratus var. sceleratus Vernon H. Oswald 1991-4-21 4508 Butte Shippee Rd, 0.3 mi east of Hwy 99, between Hwy 149 and the Thermalito Afterbay. In ditch on the north side of the road. 50 Comment
  SEINET13946321 Image available Rhamnus crocea Lewis S. Rose 1955-1 55104 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  CAS-BOT-BC59881  Rhamnus ilicifolia Lowell Ahart 1989-5-29 6303 Butte Along Robinson Mill Road, about 1.5 mi. s. of Forbestown Road. 670 Comment
  UC600524  Rhamnus rubra H. F. Copeland 1931-6-10 Butte crest between Willow Creek and Colby Creek Comment
  SEINET10493611  Rhamnus rubra subsp. obtusissima Mary Susan Taylor 1980-5-8 Taylor 2601 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC101123  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC37506  Rhamnus tomentella subsp. tomentella J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1681 Butte Table Mountain. Occasional scattered individuals along the west edge of the mesa just north of where Flag Canyon ends in a waterfall. 396 Comment
  CHSC93882  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  CHSC108974  Rhododendron Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC605  Rhododendron occidentale P. Delaplane 1965-5-4 48 Butte Found at East end of Lake Concow on Concow Rd. 1219 Comment
  SEINET10906821  Rhus trilobata var. malacophylla Mary Susan Taylor 1979-3-20 Taylor 1952 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC44064  Rhynchospora californica L. P. Janeway 1988-5-30 2717 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 1/2 mi NE of the power lines. 152 Comment
  UC600615  Ribes inerme var. inerme H. F. Copeland 1930-7-25 Butte Jonesville, meadow below cabin Jonesville Comment
  SEINET10482939  Ribes nevadaense Mary Susan Taylor 1978-5-6 Taylor 1626 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  CHSC33898  Ribes nevadense M. S. Taylor 1981-4-14 3532 Butte S side of Ponderosa Way, ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  UC725919  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte at foot of the grade leading down from Stirling City Comment
  UC436295  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  CAS-BOT-BC198956  Ribes roezlii var. roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville 1524 Comment
  CAS-BOT-BC362954  Rigiopappus leptocladus John Thomas Howell 1962-6-16 37559 Butte Magalia 731 Comment
  CHSC3020  Robinia pseudoacacia Carl Pejsa 1958-4-19 102 Butte Bidwell Park Forestry Station. Comment
  CHSC99658  Robinia pseudoacacia H. Koeth; K. Schierenbeck 2007-2-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  RSA754939  Rorippa curvisiliqua L. Ahart 2008-5-8 14714 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  CDA25120  Rorippa curvisiliqua T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  CHSC42699  Rorippa curvisiliqua var. orientalis Lowell Ahart 1987-5-6 5512 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC51254  Rorippa curvisiliqua var. orientalis Lowell Ahart 1990-10-21 6641 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
  CHSC83086  Rorippa curvisiliqua var. orientalis Lowell Ahart 2002-10-17 9987 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
  JEPS120657  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC113208  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-25 19396 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC82213  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  UC481514  Rosa bridgesii H. F. Copeland 1931-6-10 Butte rock crest between Willow Creek and Colby Creek; Jonesville Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 mile (air) southwest of Forbestown. 829 Comment
  CHSC1592  Rosa californica R. M. Staley 1952-7-2 Butte Honey Run. 182 Comment
  JEPS103498  Rosa eglanteria Lowell Ahart 2002-5-15 9660 Butte 100 yds SW of Parking Lot 10, 100 yds NE of the buildings, S side of dirt road, Gray Lodge State Wildlife Management Area, 4 mi SW of Gridley 22 Comment
  CHSC106059  Rosa multiflora Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico. 74 Comment
  SEINET10597109  Rostraria cristata A. Arthur Heller 1914-5-19 Heller 11417 Butte Hills 8 miles north of Oroville. Comment
  SD130474  Rotala indica Lowell Ahart 1980-9-28 2659 Butte Peter Ahart Ranch, Honcut. 49 Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs Comment
  CDA37505  Rotala ramosior T. C. Fuller 1976-7-8 20146 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  UCD103092  Rotala ramosior June McCaskill; G. D. Barbe 1990-9-5 4369 Butte Rice Experiment Station, West Hamilton Road at Riceton Highway, N of Biggs. Comment
  CAS-BOT-BC156607  Rubus bifrons Lowell Ahart 1987-6-9 5736 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CDA3944  Rubus laciniatus L. Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. Comment
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 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
  CHSC51370  Rubus pensilvanicus Vernon Oswald 1990-8-28 4444 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. Northeast of the 'swimming hole' at the Boy Scout Camp. 1292 Comment
  JEPS122191  Rubus ursinus Lowell Ahart 2014-4-16 19365 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. Comment
  CAS-BOT-BC421909  Rumex acetosella Lowell Ahart 1987-7-8 5802 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC36510  Rumex crispus L. Ahart 1982-5-29 3451 Butte In a farmed field, near the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CHSC90031  Rumex crispus Lesly Hess 2001-5-3 Butte Honey Run Bridge. Comment
  CHSC51008  Rumex fueginus Lowell Ahart 1990-8-15 6588 Butte Near 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
  UCD101368  Rumex obtusifolius L. Ahart 1982-9-13 3807 Butte Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam. Ca. 2.2 mi. NW of Strawberry Valley. 1100 Comment
  CHSC37090  Rumex obtusifolius subsp. agrestis L. Ahart 1982-9-13 3807 Butte On wet edges of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  CHSC102507  Rumex pulcher Lowell Ahart 2009-5-30 15798 Butte About 80 yards south of the gate, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC99487  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte Bottom of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC113375  Sagina apetala Lowell Ahart 2014-4-15 19354 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
  SEINET10537602  Sagina apetala Lowell Ahart 1983-5-12 Ahart 3973 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  JEPS114591  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 238 Comment
  JEPS119540  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte East side of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC1562015  Sagina decumbens subsp. occidentalis Barbara Ertter with Lowell Ahart 1986-4-13 5896 Butte ca. 2 airmiles n.-n.e. Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC49469  Sagittaria cuneata Vernon Oswald; Lowell Ahart 1987-7-1 3061 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  UC600414  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville 1828 Comment
  CHSC90632  Salix exigua Lowell Ahart 2005-4-2 11696 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
  UC1506098  Salix exigua var. hindsiana Robert T. Clausen 1963-3-21 63013 Butte w of sewage disposal ponds Chico; Sacramento Valley, Sacramento R. drainage 110 Comment
  CHSC109090  Salix gooddingii Lowell Ahart 2012-4-20 17893 Butte On the east side of the dam, east side of South Rim Trail, about 50 yards southwest of the table at the old homestead, about 100 yards south of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  JEPS119534  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte About 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC124578  Salix lemmonii John Thomas Howell; Gordon H. True 1967-5-9 42240 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC76401  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-10-3 8295 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
  CHSC65569  Salvia sonomensis R. Banchero 1980-4-27 139 Butte Ca 6.1 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 1.4 mi E of Cohasset Hwy. 609 Comment
  UC1124851  Salvia sonomensis H. A. Jensen 1934-10-26 390 Butte Cohasset Ridge (Keefer Ridge on map); Chico Quad. 548 Comment
  UC215467  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte near Cohasset (Sierra foothills); Sierra Comment
  JEPS96095  Sambucus mexicana Vernon H. Oswald and Lowell Ahart 1996-6-10 7742 .1 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary); Sacramento River National Wildlife Refuge 28 Comment
  UC426975  Sambucus racemosa var. microbotrys E. B. Copeland 1930-7-12 480 Butte above Jonesville (n brow of high ridge) 2100 Comment
  CHSC24935  Sanicula bipinnata Brad R. Parker 1976-3-20 2 Butte Ca. 10.8 mi nne of Chico, ca. 150 yds off the nw side of the Skyway, below a volcanic mudflow cliff. 259 Comment
  CHSC2820  Sanicula bipinnatifida David Prall 1965-3-14 7 Butte At edge of cliff 30 yds. south of Neal Rd. 1 mile east of HW 99E. 106 Comment
  RSA723863  Sanicula bipinnatifida Frances Kimball 1965-5-2 s.n. Butte Cherokee Road, 9.9 miles East of Calif. Rt. 70 between Oroville and Quincy; top of Table Mt. gully. Comment
  SEINET10454570  Sanicula bipinnatifida Mary Susan Taylor 1976-3-30 Taylor 1038 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET12120679  Sanicula bipinnatifida M. S. Camp 1974-1 29 Butte N side of Table Mountain, 6 mi N of Oroville Comment
  SEINET3450850  Sanicula tuberosa Unknown 2003-4-15 10101 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, steep slopes of Beatson Hollow 280 Comment
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May 5 2015
  UC875541  Sanicula tuberosa A. A. Heller 1915-4-12 11807 Butte near Cohasset; Sierra foothills Comment
  UCD114699  Sanicula tuberosa Christopher Mallek 2008-1 HW1- 17 Butte Magalia. 756 Comment
  CDA4889  Sapium sebiferum G. Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; Between Bidwell Canyon Drive and Lake Oroville, 440 feet south of Arroyo Drive and 2200 feet south-southwest of Bidwell Canyon Campground. Comment
  CHSC43660  Sapium sebiferum Vernon Oswald 1987-8-15 3220 Butte Butte Creek Reserve, on the n side of Butte Creek e of the Skyway, e of Chico. On the edge of the creek. 73 Comment
  CAS-BOT-BC436856  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET10838424  Saxifraga californica Mary Susan Taylor 1975-3-10 Taylor 416 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
  JEPS87147  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  CHSC106601  Scandix pecten-veneris L. P. Janeway 2011-4-13 10230 Butte Sacramento Valley. Oroville; just west of Centennial Park, along the bicycle path on the north slope of the levee on the south side of Feather River. 49 Comment
  CAS-BOT-BC283623  Schedonorus pratensis Lowell Ahart 1982-4-29 3399 Butte Along side of the dirt road, W of the Gray Lodge Headquarters ca 0.25 mile, Gray Lodge, ca 12 miles SW of Gridley 35 Comment
  CAS-BOT-BC111375  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-7 12993 Butte Big pond near river, Grey Lodge Game Refuge; Gridley Road north of Butte Sink. 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
  CAS-BOT-BC111650  Schoenoplectus mucronatus Lowell Ahart 1978-7-22 1848 Butte On SE corner of Richvale Est Rd and Erickson Rd. Richvale, in ricefield. 30 Comment
  UC1100774  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-14 13031 Butte canal near big pond on Sacramento Outing Club (Butte Sink); Butte Sink Comment
  UC683297  Scirpus californicus Alan A. Beetle 1941-6-27 2739 Butte Rte 99E 4 mi n Richvale (along roadside); n of Richvale Comment
  CHSC45137  Scirpus congdonii Vernon Oswald; Lowell Ahart 1987-7-1 3083 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the e end of the large lake. 1935 Comment
  CHSC56802  Scirpus congdonii L. P. Janeway 1987-6-26 2309 Butte 2.5 mi east of Granite Ridge along road to Lynch and Logue Meadows; near where the road crosses Camp Creek. 1365 Comment
  CAS-BOT-BC30729  Scirpus diffusus M. S. Taylor 1978-7-18 1722 Butte On n side of Butte Creek at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  RSA719172  Scirpus diffusus L. Ahart 2006-7-25 13062 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC61512  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte A small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC239965  Scribneria bolanderi John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  CHSC13812  Scribneria bolanderi D. McClain 1969-4-18 58 Butte 50 yds. n.w. of gate on Table Mountain, 5 mi. s.w. of Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  CHSC19637  Scribneria bolanderi J. Wheeler 1968-4-19 326 Butte W side of Cherokee Rd. ca. 0.75 mi s of Oregon City Rd., Table Mountain. 548 Comment
  CHSC112466  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC43688  Scutellaria siphocampyloides Vernon Oswald 1984-6-5 1254 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood control gate. 79 Comment
  CHSC74681  Scutellaria siphocampyloides Mary Bailey 1990-5-5 Butte North side of Nance Canyon. 152 Comment
  CHSC9541  Scutellaria siphocampyloides D. Joley 1968-7-8 88 Butte Found growing at Butte Meadows on hwy. 32. Comment
  RSA3813  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek, east of Chico. Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of Chico Comment
  RSA126002  Sedella pumila E. K. Balls 1957-5-23 22530 Butte 3.8 miles NE of Pentz on road from Paradise. 457 Comment
  CHSC38233  Selaginella hansenii Vernon Oswald 1982-12-19 27 Butte Bidwell Park, Chico, on the north rim at the level of the Rifle Range. 188 Comment
  CHSC109128  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On a bank, on the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC30693  Selaginella wallacei M. S. Taylor 1980-5-27 2666 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  SEINET10530446  Selaginella wallacei Mary Susan Taylor 1979-9-28 Taylor 2193 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC12107  Senecio aronicoides J. M. Pitts 1972-4-19 154 Butte 20 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC28495  Senecio aronicoides M. S. Taylor; J. D. Jokerst 1979-7-21 2163 Butte Humboldt Peak, at Humboldt Summit. 2133 Comment
  SD5873  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  CHSC89845  Senecio eurycephalus var. eurycephalus L. P. Janeway; B. Castro 2004-6-13 8135 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  RSA0060801  Senecio sylvaticus Lowell A. Ahart 2012-4-9 17843 Butte High east cliff edge of Big Chico Creek, about 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2.5 miles (air) northeast of Chico. 206 Comment
  SBBG128460  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte high E cliff edge of Big Chico Crk, ca. 20 yards W of S Rim Trail, S part of Upper Bidwell Park, ca. 2.5 mi NE of Chico 206 Comment
  CHSC27967  Senecio triangularis M. S. Taylor 1978-7-19 1743 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CDA7658  Senecio vulgaris A. C. Browne 1951-3-28 Butte Bidwell Bar. 0 Comment
  SEINET10612366  Sequoia sempervirens Metcalf 1981-4-10 METCALF 6 Butte Cultivated. Leaves green with tree approximately 100 feet tall. Small population, just north of highway 99 along Big Chico Creek, within Chico. North side of Chico Creek. White Oak Forest. Loam. 30 Comment
  UC261  Sequoiadendron giganteum unknown 1894-1-1 Butte Chico Forestry Station Comment
  CHSC27922  Setaria gracilis M. S. Taylor 1977-11-10 1509 Butte In irrigation ditch on s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  JEPS119849  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte On the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. Comment
  CHSC35323  Sherardia arvensis M. S. Taylor; K. Tharp 1982-4-8 4286 Butte Immediate vicinity of Oroville Dam Visitors Center, Oroville. 365 Comment
  CHSC70854  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  JEPS94191  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte ca. 7 mi. n. Oroville (grassy area n.e. of large parking area on North Table Mt. on e. side of Cherokee Rd.); North Table Mt. 426 Comment
  UC426911  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville 2000 Comment
  SBBG128082  Sidalcea calycosa subsp. calycosa L. Ahart 2009-5-23 15764 Butte W side of Guardians Trail, just NW of Pine Trail, Upper Bidwell Park, ca. 3/8 mi SW of intersection of Hwy 32 and Ten Mi House Rd 381 Comment
  CHSC33635  Sidalcea glaucescens R. E. Preston 1981-7-8 116 Butte 10 m w of Scotts John Creek, e of Humbolt Peak, ca. 6 km ne of Jonesville. 1930 Comment
  CHSC103746  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC52092  Sidalcea hartwegii N. Kvasnik 1980-4-20 16 Butte Covered Bridge. E side of creek, s of bridge. 91 Comment
  CHSC95211  Sidalcea hartwegii R. D. Fischer 2004-4-25 807 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected off ridge top along Hwy 32 and the beginning of the Bloodypin Trail. 335 Comment
  POM84284  Sidalcea hartwegii C. C. Bruce 1897-05 1922 Butte [No location information on label.] Comment
  CHSC31759  Sidalcea hirsuta L. Ahart 1978-5-15 1723 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA715558  Sidalcea hirsuta L. Ahart 2005-5-11 11792 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yard south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  SEINET10937545  Sidalcea oregana subsp. spicata Mary Susan Taylor 1977-7-15 Taylor 1412 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  CHSC28789  Sidalcea robusta J. D. Prouty 1979-5-23 7905231 Butte Along the s cliffs of Butte Creek Canyon, 900' n of the Skyway, ca. 4 mi e of Chico. 164 Comment
  CHSC38301  Silene antirrhina Vernon Oswald 1983-6-5 634 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  UC1562425  Silene antirrhina Lowell Ahart 1990-5-25 6478 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  JEPS115810  Silene californica Lowell Ahart 2009-4-26 15624 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 norhteast of Chico 286 Comment
  RSA755037  Silene californica L. Ahart 2009-4-26 15624 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  UC1594719  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine); nw of Lotts Lake, ne of Carr Mine 1798 Comment
  CHSC37284  Silene gallica M. S. Taylor 1982-5-2 4390 Butte N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville. Pulga serpentine outcrops. 487 Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  CAS-BOT-BC387073  Silene gallica A. A. Heller 1914-4-24 11319 Butte Hills 8 miles N of Oroville Comment
  HSC38052  Silene gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2458 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  JEPS110078  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  CHSC3759  Sinapis arvensis R. L. Adams 1964-4-12 74 Butte 4 mi. W. Chico, W. Sacramento Ave. and River Rd. on NE quarter. Comment
  CHSC90830  Sisymbrium altissimum Lowell Ahart 2005-5-2 11754 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
  CHSC546  Sisymbrium officinale E. Canfield 1904-5-10 Butte Hooker Oak Field. 76 Comment
  RSA795776  Sisymbrium officinale L. Ahart 2012-4-30 17933 Butte On the sides of the Bloody Pin Trail, about 100 yards west of Guardian Trail, about 0.5 miles west of Highway 32, about 7.5 miles northeast of Chico, south park of Upper Bidwell Park. 318 Comment
  CHSC35757  Sisymbrium orientale R. E. Preston 1982-6-9 299 Butte On w side of The Esplanade at bridge over Chico Creek, Chico. 59 Comment
  RSA21307  Sisyrinchium bellum Carl B. Wolf 1937-5-13 8652 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SEINET10508343  Sitanion hystrix var. brevifolium Mary Susan Taylor 1979-7-21 Taylor 2158 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  UC436312  Smilacina racemosa E. B. Copeland July 1930 Butte Jonesville 1550 Comment
  CHSC31473  Solanum americanum L. Ahart 1980-7-20 2471 Butte In a rd drain along the edge of the abandoned paved rd on the n side of the Suspension Bridge across Lake Oroville, n of Oroville. 330 Comment
  CHSC40897  Solanum americanum Lowell Ahart 1985-11-5 5225 Butte About 90 feet below the high water line of Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the F eather River. 274 Comment
  SEINET13709621  Solanum americanum Lowell William Ahart, Lowell William Ahart 1999-1 8261 Butte 12 Mi. S of Oroville (T17N, R4E, sec 4, NW 1/4) 30 Comment
  CDA5908  Solanum carolinense Agricultural Commissioner 1959-7-13 Butte Western Pacific Railroad, Oroville. 0 Comment
  SD5270  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CHSC48199  Solidago elongata Vernon Oswald 1987-7-16 3120 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  UC179683  Solidago elongata A. A. Heller 1914-8-6 11639 Butte Chico Meadows 1219 Comment
  SEINET10474358  Solidago occidentalis Mary Susan Taylor 1975-10-3 Taylor 926 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC26703  Solidago velutina subsp. californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1455 Butte On both sides of Hwy 32, ca. 6 mi s of Forest Ranch. 609 Comment
  SEINET10938100  Sonchus asper Mary Susan Taylor 1981-5-15 Taylor 3736 Butte T22N R5E nw/nw sec 5, Pulga SW quad. SE side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi N of Pulga bridge. l500 ft. 457 Comment
  CHSC100940  Sorbus scopulina var. cascadensis R. A. Schlising; Sandra Morey 1982-6-7 4290 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  CHSC112731  Sorghum halepense Lowell Ahart 2013-10-12 19110 Butte On the west side of Upper Palermo Road, about 250 yards south of the intersection, about 2 miles (air) northeast of Palermo. 51 Comment
  POM181467  Sorghum halepense H. F. Copeland 1923-8-14 847 Butte Near Richvale. Comment
  UCR219113  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15584 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  SEINET3825672  Sparganium eurycarpum Herbert L. Mason, Verne Grant 1946-8-14 13016 Butte Canal near big pond on Sacramento Outing Club Butte Sink Comment
  CAS-BOT-BC389945  Spergula arvensis Lowell Ahart 1990-1-17 6406 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  SEINET3450876  Spergula arvensis subsp. arvensis Unknown 2003-6-23 10307 Butte Oroville, Oroville, about 12 miles southeast, about 2 miles north and 2 miles east of Honcut, about 0.5 miles east of the Palermo Honcut highway, Peter Ahart Ranch 30 Comment
  POM174358  Spiraea densiflora var. splendens H. F. Copeland 1928-8-27 1013 Butte Neighborhood of Jonesville. Summit of Humboldt Rd. 2134 Comment
  CHSC71205  Spiranthes porrifolia Lowell Ahart 1998-6-30 8006 Butte West of th cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC600631  Spiranthes romanzoffiana H. F. Copeland 1930-7-27 Butte Blueberry Meadow Jonesville Comment
  CHSC45023  Spondias dulcis L. P. Janeway 1988-9-9 Butte Chico; in hort by K. R. Stern Comment
  CHSC43642  Stachys ajugoides var. rigida B. Castro 1987-7-19 147 Butte Along Coon Ck, near campground 0.95 mi by road into Coon Hollow. 1664 Comment
  UC884252  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  CHSC100120  Stachys pycnantha L. P. Janeway 2008-8-10 9535 Butte Northern High Sierra Nevada. Along Four Trees road 3.2 road km east-southeast of Hwy 70; overlooking Mill Creek, a tributary to North Fork Feather River; 1.6 air km east-southeast of Pulga. 732 Comment
  SD6179  Stachys rigida var. rigida E. B. Copeland 1930-7-20 Butte Jonesville 1500 Comment
  CHSC52334  Stebbinsoseris heterocarpa J. D. Jokerst 1985-4-14 2233 Butte Top of North Table Mt, N of Cherokee Rd., near E edge of mesa. 396 Comment
  CHSC48275  Stellaria crispa Vernon Oswald 1987-8-10 3208 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the edge of a streamlet at the e end of the largest (south) lake. 1935 Comment
  CHSC61309  Stellaria crispa Lowell Ahart 1993-7-22 7089 Butte In the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC1594589  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  UC1609333  Stellaria crispa Lowell Ahart 1993-7-22 7089 Butte about 6 air mi ne Feather Falls (in the campground on the w side of the bridge across Fall River) 1036 Comment
  UC478520  Stellaria longipes var. longipes E. B. Copeland 1931-6 638 Butte Joneville Jonesville 1500 Comment
  CHSC112349  Stellaria media L. P. Janeway 2014-4-9 11221 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 22N12Xwhere it crosses Peavine Creek just below the confluence of Coon Creek; French Creek Basin. 762 Comment
  JEPS107361  Stellaria media Lowell Ahart 2005-4-2 11689 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  RSA754998  Stellaria media L. Ahart 2008-5-12 14752 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC96226  Stellaria nitens R. Fischer 2006-4-25 973 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  CAS-BOT-BC395110  Stellaria nitens A. A. Heller; H. E. Brown 1902-5-12 5527 Butte Grade between Clear Creek and Paradise Comment
  SEINET10537640  Stellaria nitens Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4862 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  JEPS99035  Stephanomeria elata Lowell Ahart 1998-11-11 8064 Butte Near large oak trees, north of the stream to Phantom Falls, about 1/2 mile west of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC45773  Stephanomeria lactucina Vernon Oswald 1983-7-19 886 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  POM219097  Stephanomeria lactucina H. F. Copeland 1928-8-14 393 Butte Jonesville. Comment
  CHSC69656  Stephanomeria paniculata Vernon Oswald; Lowell Ahart 1997-9-9 8858 Butte North of Magalia and 0.4 mi northeast of Coutolenc Rd. on Jordan Hill Rd. to Whiskey Flat. Roadside. 670 Comment
  CAS-BOT-BC375766  Stephanomeria virgata John Thomas Howell 1959-9-20 34717 Butte Feather River Highway at West Branch bridge Comment
  SEINET8081026  Stipa pulchra D. H. Heinze 1963-4-7 s.n. Butte Cohasset. 122 Comment
  CHSC44959  Streptanthus diversifolius Pamela A. Mallen 1987-4-10 10 Butte On Table Mt. ca. 0.5 mi w of Cherokee Rd., 5.8 mi ne of Table Mt. Blvd. Oroville. 426 Comment
  CHSC38026  Streptanthus drepanoides R. E. Preston 1982-6-2 293 Butte Ca. 0.6 mi ese of Kunkle Reservoir, on W. Branch Feather River arm of Lake Oroville, ca. 4.5 mi se of Paradise. 280 Comment
  NY888395  Streptanthus longisiliquus G. Clifton 1997-6-13 35529 Butte Ca. 0.8 km. North of Robley Point 939 Comment
  RSA731184  Streptanthus longisiliquus G. L. Clifton 1997-6-13 35529 Butte 0.8 km north of Robley Point. 939 Comment
  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC62721  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte Ridge south of Serpentine Point and above Hwy 70. 518 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
  SEINET10448521  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2700 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
  UC1609059  Streptanthus tortuosus Lowell Ahart 1993-6-20 6990 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UCD164125  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 83 - Butte Table Mountain. 387 Comment
  HSC96695  Streptanthus tortuosus var. suffrutescens L. Ahart 2006-6-9 12647 Butte W side of Bardees Bar Rd., S of small stream, 0.25 mi. SW of bridge across N Fork Feather River at Bardees Bar, 2.75 mi. SW of Pulga 404 Comment
  UCD150344  Stuckenia pectinata William Anderson 1964-7-24 s.n. Butte Colusa Highway and Pennington Rd. Comment
  CHSC37654  Styrax officinalis var. redivivus T. B. Devine 1981-8-25 757 Butte Beside Hwy 70 near Bear Ranch Creek, along N fork of Feather River near Cresta. 426 Comment
  CAS-BOT-BC48057  Styrax redivivus M. S. Taylor 1982-5-23 4511 Butte S side of Hwy 70, near Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. Pulga SW quad. 487 Comment
  CHSC116483  Styrax redivivus R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49598 Butte Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UC774460  Swertia albicaulis var. nitida Carl B. Wolf 1941-7-23 Butte 7 mi w De Sable (on rd to Forest Ranch); Northern Sierra Nevada 762 Comment
  UC600717  Symphyotrichum bracteolatum H. F. Copeland 1927-9-2 Butte Jonesville Comment
  CHSC28389  Symphyotrichum chilense J. D. Jokerst 1979-10-12 370 Butte Along Big Chico Cr., ca 1/4 mi NE of end of Upper Bidwell Park Rd. 213 Comment
  CHSC40561  Symphyotrichum chilense Lowell Ahart 1985-10-12 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  CHSC116108  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20546 Butte On the northside of the dirt road to Lotts Lake, about 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir dam. 1842 Comment
  CHSC94580  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
  JEPS124218  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20546 Butte About 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir Dam. Comment
  CAS-BOT-BC221935  Taeniatherum caput-medusae John Thomas Howell 1967-6-22 42628 Butte Magalia 701 Comment
  UCD73065  Taeniatherum caput-medusae 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
  JEPS115243  Taraxacum officinale Lowell Ahart 2009-4-3 15522 Butte On the east side and along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 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
  JEPS119991  Thalictrum fendleri var. polycarpum Lowell Ahart 2012-4-30 17946 -A Butte On the south side of the path, near sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC88208  Thysanocarpus curvipes A. A. Heller 1938-4-17 15039 Butte Salmon Hole, Chico Creek. Comment
  CHSC100975  Thysanocarpus curvipes var. curvipes L. P. Janeway 2008-3-18 9233 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC4647  Thysanocarpus curvipes var. curvipes R. Carter 1966-4-11 333 Butte Found ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork; at base of cliff along tracks. 152 Comment
  RSA769607  Thysanocarpus curvipes var. curvipes L. Ahart, John Dittes 2009-3-20 15500 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  CHSC29732  Thysanocarpus curvipes var. elegans J. D. Jokerst 1980-4-17 591 Butte Top of North Table Mt, northern most portion. 472 Comment
  SEINET10971075  Tofieldia glutinosa Mary Susan Taylor 1977-7-15 Taylor 1408 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CDA31964  Torilis arvensis subsp. arvensis L. Ahart 2009-6-12 15837 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA5391  Torilis arvensis subsp. purpurea L. Ahart 1998-7-1 8018 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville.