Search Results — 2000 specimen records retrieved (1566 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
  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
  CHSC3625  Acacia decurrens John Francis 1966-2-27 35 Butte Arcadian and W. Francis Willard Avenues, Chico. Comment
  JEPS95255  Acer circinatum Steve Edwards 1992-5-17 Butte Vilas Road, 0.9 mi from its junction with Cohasset Road Comment
  UC600814  Acer glabrum var. glabrum H. F. Copeland 1929-6-11 Butte near Butte Creek (Jonesville); near Butte Creek, Jonesville 1524 Comment
  CAS-BOT-BC331610  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte Along road W of the Poe Power House, E of the North Fork of the Feather River, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC24659  Acer macrophyllum Keith Lickey 1976-4-18 84 Butte NW slope of Big Bend Mt; w of junction of Big Bend Rd and Hwy 70 (old). 396 Comment
  CHSC65680  Acer negundo var. californicum Vernon H. Oswald 1996-3-22 7252 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, SW corner of Tract 2, on the edge of a branch of Angel Slough. 30 Comment
  CHSC38315  Achillea millefolium Vernon Oswald 1983-5-14 483 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  POM289124  Achillea millefolium Lyman Benson 1932-7-28 3961 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  SEINET10475101  Achillea millefolium var. californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4225 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC210634  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
  CAS-BOT-BC210643  Achnatherum lemmonii Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC49585  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak. 2151 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
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Jun 8 2012
  CHSC31565  Achyrachaena mollis L. Ahart 1976-4-14 1064 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3811  Achyrachaena mollis L. E. Dunkel 1965-3-30 10 Butte Along Pentz Road ca. 1 mi e of junction with Clark Road. 45 Comment
  CHSC6686  Achyrachaena mollis Marilyn Lee 1968-4-19 136 Butte Field on W. side of Cherokee Road, Table Mt. Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC113449  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS98263  Acmispon argophyllus var. fremontii Lowell Ahart 2000-6-27 8516 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC204849  Acmispon argophyllus var. fremontii Lowell Ahart 1984-6-8 4667 Butte Just north of the spillway at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC117853  Acmispon parviflorus L. P. Janeway 2016-5-9 11944 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC31099  Acmispon parviflorus Diane M. Reilly 1980-4-19 16 Butte Under power lines. Ca. 1/4 mi sw off Big Bend Rd., ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  CHSC40283  Acmispon parviflorus Lowell Ahart 1985-5-31 5033 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC113915  Acmispon strigosus Lowell Ahart 2014-5-13 19458 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CHSC48518  Acmispon strigosus Vernon Oswald 1985-4-18 1712 Butte Feather Falls Trail ca. 0.2 mi s of the Overlook. 609 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
  RSA4207A  Aconitum columbianum var. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CAS-BOT-BC412865  Aconogonon davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CAS-BOT-BC69659  Adiantum aleuticum Lowell Ahart 1980-9-10 2635 Butte 3 mi. ne. of Milsap Bar. 1100 Comment
  CHSC27785  Adiantum jordanii Bruce Hamren 1978-4-24 10 Butte West Branch of Feather River. 280 Comment
  CHSC84642  Adiantum jordanii Matt Quinn 2001-4-4 13 Butte Found along vertical bedrock wall on south side of Honey Run Creek, approximately 3/4 mile upstream of confluence with Little Butte Creek. 243 Comment
  JEPS120088  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte On the south side of Beastson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC138055  Aesculus californica Mrs. R. M. Austin May 1896 134 Butte Little Chico Creek Comment
  CDA34629  Agoseris grandiflora L. Ahart 2009-6-19 15918 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC87555  Agoseris grandiflora R. D. Fischer 2004-4-13 58 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on ridge edge near beginning of Bloody-Pin trail. 457 Comment
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  RSA0036990  Agrimonia gryposepala Lowell A. Ahart 2013-7-2 18815 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SEINET10970336  Agrimonia gryposepala Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4423 Butte Meadow at the headwaters of Concow Creek, ca 4 miles north of Concow. From a single localized colony near the bank of the creek traversing the meadow. 1095 Comment
  SEINET10846779  Agrostis avenacea Lowell Ahart 1990-5-25 Ahart 6492 Butte Below the high water line of Lake Oroville, E of the Enterprise Boat Launch Area. About 1/8 mile NW of the Enterprise Bridge across Lake Orovilla. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  CHSC78218  Agrostis elliottiana Lowell Ahart 2000-5-16 8358 Butte On the margins of the Thermalito Afterbay, on the south and north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC127326  Agrostis exarata Lowell Ahart 1982-9-13 3823 Butte Near Pinkard Creek. Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  JEPS94728  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte about 7 air mi n of Oroville (w of the lone oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  SEINET10789948  Agrostis exarata Lowell Ahart 1988-7-24 Ahart 6127 Butte Spike Bentgrass. On dry soil, silt bar on the bottom of a deep ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west oof Robinson Mill Road, Butte County, California. 732 Comment
  CHSC38780  Agrostis microphylla Vernon Oswald 1983-5-8 457 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC6144  Agrostis microphylla E. Parreno 1968-4-19 71 Butte NE of Municipal Golf in Upper Bidwell Park at side of ridge, Chico. Comment
  CHSC59035  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  UC1130671  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadows Paynes Creek Quadrangle Comment
  SACT000147  Agrostis rossiae Herbert Copeland 1934-7-9 Butte Comment
  CHSC49497  Agrostis scabra Vernon Oswald; Lowell Ahart 1987-7-1 3066 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
  CHSC38781  Agrostis stolonifera Vernon Oswald 1983-6-27 767 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the Diversion weir. 79 Comment
  SEINET10790425  Agrostis thurberiana Vernon H. Oswald, Lowell Ahart 1991-8-19 Oswald 4836 Butte T25N R5E sw/se/S6, Red Fir Forest. Spring-fed, marchy meadow and lake on the north side of Forest Rd 25N15 between Philbrook Reservoir and Coon Hollow. Occasional grass forming small tufts on the marshy meadow. 1768 Comment
  CHSC41910  Agrostis viridis Lowell Ahart 1983-7-29 4237 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  CAS-BOT-BC138419  Aira caryophyllea Lowell Ahart 1990-1-17 6408 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  SEINET10934845  Aira caryophyllea A. Arthur Heller 1914-5-6 Heller 11363 Butte Marysville. 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
  CHSC33668  Alisma lanceolatum L. Ahart 1981-5-25 2837 Butte In a depression along side of rice field, along Central House Rd, ca. 1 1/4 mi nw of Honcut. 35 Comment
  UC814493  Alisma plantago-aquatica A. A. Heller 1914-7-31 11630 Butte about 6 mi nw Chico; Sacramento Valley Comment
  UCD138474  Allium amplectens H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  UCD80409  Allium amplectens CNPS SN Foothill Team 2005-4-13 SNFN 0078 a Butte City of Chico, Doe Mill Meadowfoam Preserve, at the east end of Warfield Street, on the east side of the creek diversion between the diversion and the creek, ~85 m south of the Preserve gate entrance. 82 Comment
  CAS-BOT-BC460728  Allium amplectens Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC460740  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC40617  Allium cratericola Ahart; Jokerst 1985-3-24 4863 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  JEPS27141  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit Table Mt. 304 Comment
  CHSC54022  Allium hyalinum Vernon H. Oswald 1991-4-1 4477 Butte Nelson Ave on the west border of the Thermalito Forebay, west of Oroville. 70 Comment
  RSA0105547  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CAS-BOT-BC472973  Allium membranaceum Alice Eastwood 1921-5-22 10566 Butte Los Vergils Comment
  SEINET12048269  Allium membranaceum M. Ownbey, Ownbey, G. B. 1946-1 2945 Butte just E of Brush Creek Ranger Station Comment
  CAS-BOT-BC132069  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  RSA112747  Allium peninsulare var. peninsulare E. K. Balls, Lee W. Lenz 1955-5-13 20696 Butte About 1 mile NE of Pentz trading post on road to U. S. highway 40. From Oroville-Magalia road. 305 Comment
  RSA768997  Alopecurus saccatus L. Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 372 Comment
  SEINET10511198  Alopecurus saccatus Lowell Ahart 1982-5-10 Ahart 3429 Butte Ca.2 mi ne of Honcut. Valley Grassland. 50 Comment
  CHSC6638  Amaranthus M. MacArthur 1968-6-16 337 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC109776  Amaranthus deflexus Lowell Ahart 2012-10-20 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC112628  Amaranthus palmeri Lowell Ahart 2013-10-16 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about one mile east of Biggs. 30 Comment
  JEPS87520  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road); w of Butte Creek 48 Comment
  CDA3282  Amaranthus retroflexus L. Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. Comment
  CHSC66656  Amaranthus retroflexus Vernon Oswald 1996-7-17 8066 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Along the farm road at Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  UCD97758  Amaranthus retroflexus L. E. Hazeltine 1916-7-21 Butte Chico. Comment
  SEINET10478792  Amaranthus retroflexus Mary Susan Taylor 1975-10-3 Taylor 930 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC105790  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  CHSC38320  Ambrosia psilostachya Vernon Oswald 1983-8-27 1033 Butte Upper Bidwell Park, Chico, between the parking areas at Bear Hole and Diversion Dam. 121 Comment
  UCD128818  Ambrosia psilostachya G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13076 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 35 Comment
  POM220123  Amelanchier pallida H. F. Copeland 1928-8-18 459 Butte Neighborhood of Jonesville, woods close to Butte Creek 1524 Comment
  CAS-BOT-BC142955  Amelanchier utahensis Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 miles north of the Lost Creek Dam 1005 Comment
  CHSC110332  Ammannia coccinea B. Castro; Margie Graham 2013-8-24 1600 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 about 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC42098  Ammannia coccinea Lowell Ahart 1986-11-9 5442 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1.4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CDA36693  Ammannia coccinea T. C. Fuller 3158 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC46876  Ammannia robusta Vernon H. Oswald 1989-9-4 3976 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  UCD38755  Ammannia robusta Beecher Crampton 1957-9-17 4631 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  UC726069  Amsinckia eastwoodiae A. A. Heller 1941-3-16 15888 Butte near Pentz (along grain field near the junction of the Cherokee Road with Paradise-Stirling City Road, opposite Cattle Corral) Comment
  JEPS107370  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS104334  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  UC727076  Amsinckia lycopsoides A. A. Heller 1940-4-10 15535 Butte e of Chico (alongside Bidwell Park, near the radio station) Comment
  RSA32735  Amsinckia lycopsoides A. A. Heller 1942-4-5 16419 Butte Just north of Artois. Comment
  CHSC82403  Anagallis arvensis Lowell Ahart 2002-5-7 9632 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC51349  Anaphalis margaritacea Vernon Oswald 1990-9-11 4450 Butte About 1.5 miles south-southeast of Brush Creek. 960 Comment
  CAS-BOT-BC272864  Ancistrocarphus filagineus Ahart; Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC38784  Andropogon glomeratus var. scabriglumis Vernon Oswald 1982-10-22 1 Butte Bidwell Park, Chico. Near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi e of its junction with Wildwood Ave. 121 Comment
  CAS-BOT-BC137802  Andropogon virginicus var. virginicus M. K. Bellue 1938-3-18 s.n. Butte Near Thermalito. Comment
  CHSC72745  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC28169  Antennaria rosea J. D. Jokerst 1979-7-2 299 Butte Near summit of Humboldt Peak on N facing slope. Comment
  CHSC38321  Anthemis cotula Vernon H. Oswald 1983-6-13 674 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 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
  SEINET10547815  Antirrhinum breweri Mary Susan Taylor 1981-6-19 Taylor 3958 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC38682  Antirrhinum cornutum Vernon Oswald 1983-7-3 803 Butte Upper Bidwell Park, Chico, on the rim overlooking Sycamore Creek Canyon ca. 200 ft w of the e end of the North Rim Trail. 390 Comment
  UC336555  Antirrhinum cornutum Edw. L. Greene 1890-6-27 Butte Chico Comment
  CHSC48967  Antirrhinum leptaleum Vernon Oswald 1985-6-26 1868 Butte West side of Forbestown Rd. ca. 200 ft s of Black Bart Rd. 743 Comment
  CHSC78166  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC38640  Aphanes occidentalis Vernon Oswald 1983-3-7 133 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 0.1 mi. w of the power lines. 128 Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC32153  Apocynum cannabinum L. Ahart 1976-5-27 1133 Butte La Porte Rd, ca. 100 yds above its jct with Robinson Mill Rd, ca. 2 mi sw of Rackerby. 609 Comment
  CAS-BOT-BC392108  Aquilegia formosa A. A. Heller 1915-6-25 12017 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC392110  Aquilegia formosa A. A. Heller 1914-6-22 11504 Butte About Chico Meadows 1219 Comment
  CHSC45020  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-21 220 Butte N part of county, near Philbrook Resevoir. 1706 Comment
  CHSC45021  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 227 Butte Ca. 3.3 air miles NE of Stirling City. 1417 Comment
  POM149785  Aquilegia formosa var. truncata Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CAS-BOT-BC17267  Arabidopsis thaliana Lowell Ahart 1990-3-19 6416 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  POM95063  Arabis breweri C. C. Bruce 1897-02 1945 Butte Little Chico Comment
  SEINET10907251  Arabis breweri Mary Susan Taylor 1975-4-29 Taylor 542 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CAS-BOT-BC407720  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  CAS-BOT-BC407715  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte 1 air mile NE of Bald Mountain and 4.25 air miles NE of Stirling City 1676 Comment
  RSA633001  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27460 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52114  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51111 Butte Skyway and Wagstaff Road; Paradise; transition zone. 609 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
  UCD52243  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51563 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC24410  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51568 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  UC412700  Arctostaphylos manzanita subsp. manzanita W. P. Taylor 1912-5-27 Butte 4 mi N Oroville, Chambers Ravine Comment
  UC725916  Arctostaphylos mewukka A. A. Heller 1942-3-22 16406 Butte 1/2 mi below first house; Cohassett Comment
  SEINET10914129 Image available Arctostaphylos mewukka A. Arthur Heller 1940-2-6 Heller 15493 Butte On the Wagstaff Road near the junction with the Neal Road, Paradise Transition Life Zone. Comment
  CHSC103425  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  JEPS118412  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2011-7-9 17566 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  CAS-BOT-BC38557  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51564 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38604  Arctostaphylos mewukka subsp. truei A. A. Heller; H. E. Brown 1902-5-8 s.n. Butte Berry Canyon, near Clear Creek Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 air mi W of Elks Retreat. 1310 Comment
  UC481530  Arctostaphylos nevadensis H. F. Copeland 1931-6-11 Butte above Kirby Meadows; Jonesville Comment
  SEINET10973491  Arctostaphylos nevadensis Mary Susan Taylor 1980-8-2 Taylor 3207 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC46717  Arctostaphylos patula Saichi Kawahara 1968-5-5 398 Butte Bull Road, 3 mi. s. of Humboldt Rd. 1524 Comment
  POM209917  Arctostaphylos patula H. F. Copeland 1932-6-29 A- 7 Butte The Summit, Jonesville. Comment
  SEINET11989235  Arctostaphylos truei J. T. Howell 1975-1 51112 Butte Skyway & Montana Drive, Paradise 610 Comment
  CAS-BOT-BC48300  Arctostaphylos viscida subsp. viscida A. A. Heller 1916-3-12 12280 Butte Butte Creek canyon near Cenierville in the digger pine and blue oak belt. Comment
  CHSC10635  Arctostaphylos viscida subsp. viscida Lowell Ahart 1968-3-3 Butte Swede's Flat Road. 304 Comment
  CHSC590  Arctostaphylos viscida subsp. viscida L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  JEPS119508  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  OBI74984  Arctostaphylos viscida subsp. viscida Hannah M. Fugle 2011-1-15 3 Butte Magalia, ca. 150 ft NW of Coutelenc rd, ca. .25 mi N of Alphy's ln. 762 Comment
  UC1174972  Arctostaphylos viscida subsp. viscida P. C. Everett and E. K. Balls 1959-10-20 23908 Butte Hwy 32 9.4 mi ne Chico (toward De Sabla) 792 Comment
  UC177598  Arctostaphylos viscida subsp. viscida H. M. Hall 1914-8-2 9830 Butte foothills near Bidwell Bar (ridge summit near Mt. Ida Ranch); Sierra Nevada Mountains Comment
  UC195408  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC21018  Aristolochia californica M. S. Taylor 1975-4-29 543 Butte S side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  UC687398  Aristolochia californica unknown 1896-2 151 Butte Butte Creek Canyon Comment
  CAS-BOT-BC295835  Arnica dealbata A. A. Heller 1913-6-7 10824 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  JEPS114682  Artemisia douglasiana Lowell Ahart 2008-6-23 15150 Butte N side of Ponderosa Way, N of the water fall, about 1 mi (air) SW of the Ponderosa Dam, about 2 1/4 mi (air) NW of Forbestown 482 Comment
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC90291  Artemisia douglasiana Lowell Ahart 1981-9-15 3162 Butte One mile N of the Lost Creek Reservoir 1200 Comment
  JEPS108150  Asarum lemmonii L. P. Janeway, David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump 1134 Comment
  SEINET10839049  Asarum lemmonii Mary Susan Taylor 1981-5-7 Taylor 3648 Butte 3600 ft. T20N R7E sw sec 11, Clipper Mills quad. In shade of shrub, in creek crossing Lumpkin Ridge Rd(20N15), 1.9 mi W of Golden Trout Crossing on South Fork Feather River, ca. 5 air mi e of Feather Falls. Yellow Pine Forest; 1097 Comment
  SEINET10903038  Asclepias cordifolia Lowell Ahart 1985-6-17 Ahart 5063 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CDA14078  Asclepias speciosa G. F. Hrusa, T. D. Wilfred 1997-7-3 13961 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC38265  Asclepias speciosa Vernon Oswald. 1983-6-14 682 Butte Upper Bidwell Park, Chico, 100 ft. e of the turn-around at the e end of Upper Park Rd. 207 Comment
  RSA4658  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CAS-BOT-BC178467  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC45903  Astragalus gambelianus Lowell Ahart 1981-4-24 2789 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC46364  Astragalus gambelianus Lowell Ahart 1989-5-10 6227 Butte Growing at the end of the dirt road that lead to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  CHSC67362  Astragalus gambelianus James D. Jokerst; R. A. Schlising 1985-4-8 2215 Butte Serpentine Point W and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. In vicinity of highway right of way fence. 548 Comment
  CHSC111344  Astragalus pauperculus Lowell Ahart 2012-5-2 17958 Butte 10 yards south of the fence, about 80 yards northeast of the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 115 Comment
  CHSC62099  Asyneuma prenanthoides L. P. Janeway 1993-7-12 4438 Butte Plumas National Forest. About 0.5 mi north of Mountain House; along Rd 22N49 1.2 mi southwest of Fourmile Ridge Road (22N33). 990 Comment
  CAS-BOT-BC66023  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 26 Butte Jonesville 1600 Comment
  CHSC47379  Athysanus pusillus Lowell Ahart 1973-3-7 161 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC61207  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1993-3-24 5245 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  SEINET10479057  Atriplex argentea subsp. expansa Lowell Ahart 1983-9-19 Ahart 4451 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
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  UCSB64020  Atriplex micrantha Ahart, Lowell 1981-11-6 Butte Near the entrance to the Gray Lodge Waterfowl Management Area, west of Pennington Road, about 12 miles south-west of Dridley 30 Comment
  SEINET11935015  Atriplex serenana Unknown 1981-1 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CHSC61036  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CAS-BOT-BC146025  Avena barbata John Thomas Howell 1962-6-15 37531 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC100990  Avena barbata L. P. Janeway 2008-4-2 9246 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC104838  Avena barbata Lowell Ahart 2010-5-23 16727 Butte On both sides of Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 413 Comment
  JEPS117626  Avena barbata Lowell Ahart 2010-5-23 16727 Butte On both sides of Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 413 Comment
  CHSC31711  Avena fatua L. Ahart 1978-5-1 1699 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC77824  Avena fatua Anna Pinsky 1997-4-30 40 Butte Chico, Upper Bidwell Park, Bear Hole, 100-200 ft. above Big Chico Creek. 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
  CAS-BOT-BC66215  Azolla filiculoides Mrs. R. M. Austin 1894-6-1 s.n. Butte Cold Springs, Willow Creek Comment
  SEINET10474442  Baccharis douglasii Lowell Ahart 1985-10-12 Ahart 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. Comment
  CHSC89489  Baccharis pilularis R. D. Fischer 2004-8-22 441 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property. At edge of large mdw. 217 Comment
  CHSC94976  Baccharis salicifolia Lowell Ahart 2006-10-12 13503 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CHSC112603  Bacopa eisenii Lowell Ahart 2013-9-20 19057 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC3527  Balsamorhiza deltoidea John Francis 1966-4-30 144 Butte 3.4 miles E of Forest Ranch on Hwy 32. Comment
  RSA126010  Barbarea orthoceras E. K. Balls 1957-5-22 22517 Butte SW shore, Lake Almanor, just beyond Big Meadows Dam, 1402 Comment
  SD48506  Barbarea verna E. K. Balls 1957-5-22 22517 Butte Southwest shore, Lake Almanor, just beyond Big Meadows Dam. 1399 Comment
  CHSC48288  Bassia hyssopifolia Vernon Oswald 1983-6-28 780 Butte Graylodge Waterfowl Management Area near Parking Lot 16. 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
  CHSC77820  Bellardia trixago Lowell Ahart 2000-4-22 8329 Butte On the south side of Highway 162, about 1/4 mile west of Highway 99, about 10 miles sothwest of Oroville. 32 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  UC725880  Berberis aquifolium var. repens A. A. Heller 1939-4-8 15365 Butte 2 mi e Magalia (on the Coutolene rd) Comment
  JEPS97414  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CHSC32369  Bidens frondosa J. D. Jokerst 1979-11-13 1229 Butte Table Mountain. Top of North Table Mountain, ca. 100 m N of Cherokee Rd at the E edge of the mountain. 396 Comment
  CHSC72247  Bidens frondosa Lowell Ahart 1998-9-11 8053 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
  SEINET10872129  Bidens frondosa Mary Susan Taylor 1982-8-14 Taylor 5139 Butte T20N R8E. Jct of French Creek and 21N56, 0.5 mi e of Mooretown Ridge Rd, ca. 3 mi n of Sly Creek Reservoir Dam, ca. 4 air mi n of Strawberry Valley. 4000 ft. 1219 Comment
  UCD80035  Blennosperma nanum CNPS SN Foothill Team 2005-4-6 SNFN 0098 a Butte CDFG North Table Mountain Wildlife Area, Oroville. Stand is approximately 30 meters east of Coal Canyon rim. 366 Comment
  HSC92468  Blennosperma nanum var. nanum Jeanne McFarland, Kathy Meyer, Anne Mullenniex 1995-4-9 1 Butte N Table Mtn., S of Paradise on Cherokee Rd., at the E end of Table Mtn. proper 381 Comment
  UCD114121  Boechera arcuata Robert E. Preston 1985-4-4 509 Butte Bear Ranch Creek, south of Hwy 70, along trail between hwy and falls. 463 Comment
  UCD114124  Boechera arcuata Robert E. Preston 1985-4-4 509 Butte Bear Ranch Creek, south of Hwy 70, along trail between hwy and falls. 463 Comment
  CAS-BOT-BC14635  Boechera rectissima H. F. Copeland 1931-6-10 1518 Butte Jonesville. 1524 Comment
  SEINET10453124  Boisduvalia densiflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4149 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  SEINET10453125  Boisduvalia densiflora Lowell Ahart 1985-6-17 Ahart 5058 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  POM225863  Boisduvalia macrantha J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  POM46120  Boisduvalia macrantha C. C. Bruce 1897-06 2005 Butte [Unspecified] Comment
  UCD150349  Bolboschoenus fluviatilis E. Littrell 1972-4-27 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CHSC57209  Bolboschoenus glaucus L. P. Janeway; Vern Oswald 1989-4-17 3223 Butte Rice field on east side of Butte Creek 2.5 mi south of Biggs-Princeton Road (Afton Road). 18 Comment
  CAS-BOT-BC28203  Bolboschoenus glaucus Verne Grant; Herbert L. Mason 1956-8-7 12291 Butte Gridley Road north of Butte Sink Comment
  UC1472740  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 3-a Butte Jonesville 1524 Comment
  UC955482  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9820 Butte Jonesville, E of Stephen's Hotel 1554 Comment
  SD9258  Botrychium simplex E. B. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  CHSC48893  Boykinia occidentalis Vernon Oswald 1985-8-12 1926 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CHSC110139  Brachypodium distachyon L. P. Janeway 2012-5-2 10810 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south-facing slope overlooking Big Chico Creek, about 600 m northeast of Horseshoe Lake between Upper Trail and the Rim. 146 Comment
  CHSC1082  Brasenia schreberi R. Morford 1931-4-28 Butte Dodge Lands. 30 Comment
  CHSC90925  Brassica rapa Lowell Ahart 2005-4-14 11727 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  RSA724877  Brickellia californica L. Ahart 2006-9-11 13335 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  UCD57149  Briza maxima Beecher Crampton 1965-6-17 7385 Butte 2 miles northeast of Bangor, La Porte Road. Comment
  CHSC88987  Briza minor Christine Hantelman 2000-4-8 65 Butte Oroville. On side of track along south edge of Table Mountain golf course. 60 Comment
  CAS-BOT-BC478967  Brodiaea californica subsp. californica A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  CHSC2076  Brodiaea elegans M. Underhill 1952-7-2 Butte 152 Comment
  UC203651  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Butte Meadows Sierra Nevada, Butte Meadows 1219 Comment
  CAS-BOT-BC484505  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  HSC43122  Brodiaea minor Maralyn O'Meara 1974-4-20 275 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  UC501524  Brodiaea minor Frank W. Peirson 1926-6-21 6767 Butte Humboldt Road Butte Meadows Comment
  CHSC112887  Brodiaea nana Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road. 42 Comment
  UCD139155  Brodiaea nana R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  SEINET10472700  Brodiaea pulchella Mary Susan Taylor 1975-3-10 Taylor 408 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  SEINET10534140  Brodiaea purdyi Mrs. R. M. Austin 1896-1 Austin 816 Butte Mesa-east of Chico Comment
  POM319444  Brodiaea sierrae Patricia Wilder 1971-6-22 5170 Butte On Concow Road, just N of jct with CA State Hwy 70, N of Oroville. Sierra Nevada Mtn range, N fork Feather River. 495 Comment
  CHSC42905  Bromus carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CAS-BOT-BC149547  Bromus carinatus var. carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile southwest of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC106877  Bromus catharticus Lowell Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  JEPS115993  Bromus diandrus Lowell Ahart 2009-5-8 15667 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
  RSA754797  Bromus diandrus L. Ahart 2009-5-8 15667 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC46436  Bromus japonicus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 792 Comment
  CAS-BOT-BC162457  Bromus laevipes John Thomas Howell 1967-6-22 42621 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC112782  Bromus laevipes Lowell Ahart 2013-5-27 18716 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 731 Comment
  CHSC54117  Bromus laevipes Vernon H. Oswald; Lowell Ahart 1991-5-13 4579 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). All along the trail. 213 Comment
  CHSC35671  Bromus madritensis subsp. madritensis R. E. Preston 1982-4-25 264 Butte Slope at lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC38799  Bromus madritensis subsp. rubens Vernon Oswald 1983-3-19 199 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. ca. 300 ft w of Parking Area M (1.2 mi e of the power lines). 146 Comment
  UCD59073  Bromus orcuttianus H. F. Copeland 1930-7-21 s.n. Butte Jonesville. By Butte Creek. 1524 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
  SEINET11688661  Bromus rubens J. M. Lund 1980-1 20 Butte 0.5 mi N of airport turn off, on Cohasette road, N of Chico 76 Comment
  CHSC42862  Bromus sterilis Lowell Ahart 1987-5-6 5554 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  SEINET10515117  Bromus tectorum Lowell Ahart 1966-5-20 Ahart 5279 Butte On dry bare soil, near the edge of the road that goes to the Forbestown Reservoir, about 1 mile SW of the Forbestown Reservoir, about 3 1/2 miles NE of Forbestown. Yellow Pine Forest. 610 Comment
  SEINET10515173  Bromus tectorum Lowell Ahart 1982-6-4 Ahart 3531 Butte On dry bare rocky lava soil, on a lava cap, 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. Very common. Yellow Pine Forest. 1000 Comment
  CHSC11979  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  LA13082  Bromus vulgaris E. B. Copeland; 1929-7-22 sn Butte Jonesville 1500.0 Comment
  RSA4655  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC30870  Bulbostylis capillaris J. D. Jokerst 1980-7-18 994 Butte Top of North Table Mtn, ca 200 m NW of the jct of Cherokee Road and the E edge of Mtn. Comment
  JEPS122141  Bulbostylis capillaris Lowell Ahart 2014-5-2 19426 Butte About one mile (air) northwest of the improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CHSC68913  Calamagrostis canadensis var. langsdorffii Lowell Ahart 1997-7-11 7757 Butte Near the west edge of a bog, east of the dirt road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1676 Comment
  HSC93346  Callitriche heterophylla var. heterophylla L. Ahart 1995-5-26 7574 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC104832  Callitriche marginata Lowell Ahart 2010-6-9 16787 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 iles (air) northeast of Oroville. 398 Comment
  CHSC26730  Callitriche marginata M. S. Taylor; M. Hayes 1978-4-14 1560 Butte Vernal pool, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 16 mi s of Chico. 30 Comment
  CHSC30988  Callitriche marginata M. S. Taylor 1980-3-15 2379 A 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
  CHSC84631  Calochortus albus A. Rutherford 2002-4-27 24 Butte South Libby Road, Paradise, across the stream from Fire Station 2 in a triangular dirt field. Comment
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  CHSC115291  Calochortus albus var. albus Lowell Ahart 2015-4-27 20086 Butte On both sides of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC2231  Calochortus coeruleus R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  UC600459  Calochortus leichtlinii H. F. Copeland 1932-7-24 Butte sw of Butte Creek Meadows; Jonesville 1800 Comment
  CHSC47585  Calochortus luteus Lowell Ahart 1977-5-2 1342 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET7072747  Calochortus luteus A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 99, then south on Shippee Road. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 612709mE, 4380037mN. Coordinate datum: NAD 27.) Comment
  CAS-BOT-BC491860  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Hills 8 miles north of Oroville Comment
  SD6501  Calochortus monophyllus Mrs. R. M. Austin Jul 1879 Butte Sutton House. Comment
  SEINET12048530  Calochortus monophyllus L. J. Newsum 1984-1 16 Butte Bidwell Heights Rd, 200 ft from jct with Hwy 32, 7 mi E of Chico 457 Comment
  SEINET7040283  Calochortus monophyllus A. G. Vestal 1963-5-30 s.n. Butte Road edge ca. 0.5 mile west of Forbestown. Forbestown Quadrangle UTM Zone 10, 648472mE, 4375587mN. Comment
  CHSC12120  Calochortus tolmiei M. F. Smith 1972-4-15 9 Butte On Big Bend Road, 2 1/2 miles south of intersection with highway 70. 457 Comment
  CHSC98583  Calochortus tolmiei L. P. Janeway; B. Castro 2007-5-6 8968 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  UC1563273  Calycadenia fremontii Lowell Ahart and Mary Sue Taylor 1990-8-28 6585 Butte 3 mi e, s side of Hwy 32 Chico 182 Comment
  CHSC22939  Calycadenia oppositifolia Robert A. Schlising 1963-6-7 2616 Butte 3.1 mi S of Cohasset along Cohasset Highway. Comment
  CHSC37503  Calycadenia oppositifolia J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1678 Butte Table Mountain. Ca. 150 meters due north of Phantom Falls (W edge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  CHSC62711  Calycadenia oppositifolia L. P. Janeway 1993-5-30 4363 Butte Above Ponderosa Way, 1.3 mi northeast of Coutolenc Road; ca 1.3 mi north-northeast of Magalia. 563 Comment
  CHSC84508  Calycadenia oppositifolia John Dittes; Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Cascade Range Foothills; Upper Bidwell Park; approximately 6.7 air-miles northeast of Chico, 2.5 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main road, just west of Parking Lot-R. 228 Comment
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Oct 16 2006
  CHSC84732  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle. 277 Comment
  UC1971679  Calycadenia oppositifolia 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Road jct, ca. 200 yds N on small dirt powerline road (very near to GDC 553, 558) 653 Comment
  CAS-BOT-BC275383  Calycadenia truncata var. truncata John Thomas Howell 1961-9-22 36772 Butte N Fork of Feather RIver, 12 miles from Oroville 213 Comment
  CAS-BOT-BC275386  Calycadenia truncata var. truncata John Thomas Howell 1951-6-26 27506 Butte Feather River Canyon 198 Comment
  CHSC102406  Calycanthus occidentalis Lowell Ahart; John Dittes 2009-6-19 15951 Butte On dry soil, near a small 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
  UC600489  Calyptridium umbellatum H. F. Copeland 1931-6-11 Butte Jonesville, Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows 1828 Comment
  HSC96837  Calystegia malacophylla subsp. malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards S of Humboldt Rd. about 1 3/8 mi. SW of Butte Meadows 1401 Comment
  CHSC27972  Calystegia malacophylla subsp. malacophylla M. S. Taylor 1978-7-19 1769 Butte On s side of Upper Scotts John Rd, ca 3 mi n of its jct with Scotts John Rd, ca 7 mi ne of Jonesville. 1889 Comment
  CHSC46360  Calystegia occidentalis Lowell Ahart 1989-5-28 6300 Butte On a steep slope south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10496586  Calystegia occidentalis Mary Susan Taylor 1982-6-24 Taylor 4735 Butte T23N R5E sw/sw sec 29. Pulga SW quad. At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. Mixed Evergreen Forest; 3500 ft. 1069 Comment
  CHSC27311  Calystegia occidentalis subsp. occidentalis t. B. Devine 1976-7-31 344 Butte Beside Humbug Road ca 2 mi S of Nimshaw. 548 Comment
  CHSC34978  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1974-6-5 3138 Butte 9.9 mi NE of Chico along Hwy 32. 512 Comment
  CAS-BOT-BC216300  Camissonia Lowell Ahart No date on label s.n. Butte Peter Ahart Ranch. Noncut. Comment
  CHSC19698  Camissonia contorta S. K. Ray 1971-5-1 25 Butte Ca. 10-15 yds from shoreline of a dredger pond ca. 1/4 mi n by ne of the e end of Walnut Ave, ca. 3 mi e of Gridley. Comment
  SEINET10939006  Campanula prenanthoides Hall Hall 9797 Butte Butte Meadows, transition zone. 1311 Comment
  CHSC65684  Capsella bursa-pastoris Vernon H. Oswald 1996-3-22 7258 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
  SEINET10448444  Cardamine breweri Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4192 Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  CHSC498  Cardamine californica P. Delaplane 1965-3-2 66 Butte Found ca. 100 yds. from covered bridge on Honey Run Rd. ca. 8 mi. SE of Chico. 304 Comment
  CHSC38419  Cardamine californica var. californica Vernon Oswald 1982-12-23 31 Butte Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  CHSC24976  Cardamine oligosperma J. Cox 1976-3-10 42 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  UC203628  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte Canyon of Big Chico Creek Canyon Big Chico Creek 68 Comment
  POM95602  Cardamine pensylvanica C. C. Bruce 1897-05 2064 Butte Little Chico Comment
  CAS-BOT-BC32414  Carex abrupta Amos Arthur Heller 1913-6-7 10820 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC113409  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC55426  Carex abrupta L. P. Janeway; C. A. Janeway 1986-9-13 1852 Butte Along Humbug Summit Road at Cold Springs, just below Humbug Summit. 1965 Comment
  CHSC94002  Carex amplifolia R. D. Fischer 2004-6-20 782 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In drainage ditch at north end of camp where Scout Road passes through Chico Meadows. 1371 Comment
  JEPS94568  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  JEPS106369  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  RSA0119040  Carex angustata Lowell Ahart 2014-7-7 19579 Butte Small snow lake, north of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1691 Comment
  UC204230  Carex angustata H. M. Hall 1914-7-25 9783 Butte Jonesville Sierra Nevada Mountains, Jonesville 1554 Comment
  UC600698  Carex angustata H. F. Copeland 1927-5-6 1069 Butte Jonesville Comment
  CHSC52845  Carex athrostachya L. P. Janeway; R. A. Schlising 1988-7-16 3027 Butte Large meadow at head'waters' of Willow Creek. 1935 Comment
  SD468  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville; about the edges of the Lily Pond, a permanent pool; warm in the summer. 1700 Comment
  CAS-BOT-BC19106  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  CAS-BOT-BC19411  Carex bolanderi Lewis S. Rose 1937-6-10 37364 Butte Hurleton. 579 Comment
  CHSC116209  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte Drainage on the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  JEPS110391  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side 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
  RSA767484  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  SEINET10586772  Carex bolanderi Lowell Ahart 2010-6-12 Ahart 16796 Butte T22N, R2E, northwest 1/4 Section 35. About 150 yards east of Ten Mile House Road, about 3.4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  CHSC41293  Carex cusickii S. C. Morey 1983-7-21 489 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC47064  Carex densa L. P. Janeway; Vern H. Oswald 1989-4-17 3219 Butte Along levee on E side of Butte Cr, 1.8 mi S of Biggs-Princton Rd (Afton Rd). On E side of the levee along edge of fallow rice field. 18 Comment
  CHSC84723  Carex densa L. P. Janeway; John Hunt 2003-5-8 7780 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  SEINET7556723 Image available Carex densa L. P. Janeway 2003-6-8 7820 Butte Pulga 7.5' quad. High Cascade Range. Flea Valley. Meadow at head of Concow Creek. Comment
  HSC103999  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte Chico, one block S of Chico High School, NW of the intersection of W. Frances Willard Ave. and Arcadian Ave. 59 Comment
  UC182751  Carex feta A. A. Heller 1913-6-4 10781 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC47061  Carex fracta L. P. Janeway 1989-5-17 3247 Butte Cyn overlook (S Fk Feather River) along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. 693 Comment
  SEINET7468094 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville 1720 Comment
  CHSC45237  Carex geyeri L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2493 Butte Near Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
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Nov 14 2011
  SEINET7559905 Image available Carex globosa John Thomas Howell 1962-6-16 37537 Butte Magalia. 732 Comment
  CHSC78177  Carex gracilior Lowell Ahart 2000-5-18 8374 Butte On the bottom of the Clay Pit, near the cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) sothwest of Oroville. 36 Comment
  HSC87064  Carex heteroneura L. P. Janeway, Robert A. Schlising 1988-7-22 3065 Butte Upper reaches of Philbrook canyon, 0.7 mi. W of the pass 1890 Comment
  CHSC44660  Carex hoodii L. P. Janeway 1988-6-25 2891 Butte Near Bull Hill Rd 1.5 mi from The Skyway. 1493 Comment
  CHSC105960  Carex integra Lowell Ahart 2010-9-28 17271 Butte About 20 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC77821  Carex inversa Lowell Ahart 2000-3-25 8324 Butte In the lawn on the south side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  CAS-BOT-BC7777  Carex laeviculmis Lowell Ahart 1984-7-19 4746 Butte about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City, CA 1500 Comment
  CHSC109968  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir. Northern Sierra Nevada Highlands (n SNH). 1025 Comment
  CHSC52283  Carex mariposana L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2995 Butte At Crane Valley (upper Big Kimshew Cr); a large montane meadow. 1569 Comment
  CHSC33771  Carex multicaulis J. D. Jokerst; M. S. Taylor 1980-4-18 606 Butte Nimshew Ridge, S of Nimshew Rd 1.0 mi S of Nimshew where road makes sharp turn to the N. 701 Comment
  SEINET8055537 Image available Carex multicaulis M. S. Taylor 1981-5-13 3696 Butte Pulga SE quad; E side of 23N15.5, ca. 1 mi S of jct. with Four Trees Rd., ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy 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-BC119558  Carex nudata A. A. Heller 1913-6-7 10818 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC61219  Carex nudata Lowell Ahart 1993-4-8 6932 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  UC1594530  Carex nudata Lowell Ahart 1992-4-7 6744 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CHSC52233  Carex pachystachya L. P. Janeway 1987-6-19 2238 Butte Along Sly Creek at crossing of dirt road to the SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  CAS-BOT-BC119046  Carex pellita Herbert Faulkner Copeland 1920-8-1 174 Butte Jonesville Meadow 1219 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
  UC1108043  Carex preslii H. F. Copeland 1932-7-24 Butte Rim of south wall of Butte Creek drainage Comment
  CHSC47060  Carex retroflexa var. texensis L. P. Janeway 1989-4-10 3215 Butte South side of Chico; along Salem Ave about W 14th St. 59 Comment
  CHSC44991  Carex simulata S. C. Morey 1983-7-28 628 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC44994  Carex simulata S. C. Morey 1983-7-23 580 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44106  Carex stipata var. stipata L. P. Janeway 1987-6-8 2163 Butte Along French Cr across from mouth of Ram Cr. 617 Comment
  CHSC52873  Carex straminiformis L. P. Janeway 1986-9-1 1835 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CHSC45043  Carex subfusca Vernon Oswald 1983-7-19 878 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  CAS-BOT-BC116732  Carex subfusca Lowell Ahart 1984-7-19 4751 Butte Ca. 1 1/2 mi SE of Bald Mountain, 1/4 mi E of Oak Point, ca 5 mi NE of Stirling City. 1500 Comment
  SEINET4292177 Image available Carex subfusca Unknown 1995-1 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Featheriver. Comment
  UCSC000113  Carex subfusca H. F. Copeland 1932-8-22 s.n. Butte At spring, Butte Creek Crest Comment
  NY11376  Carex teneriformis H. M. Hall 1914-7-25 9781 Butte Jonesville, Northern Butte Co. 1554.5 Comment
  CHSC44989  Carex utriculata S. C. Morey 1983-7-23 574 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44990  Carex utriculata S. C. Morey 1983-8-3 689 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10894839  Carex vernacula Lowell Ahart 2010-9-28 Ahart 17264 Butte T25N, R5E, northeast 1/4 Section 29. On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  SEINET7580175 Image available Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Oroville 7.5' quad, 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
  CHSC4604  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. Comment
  CHSC25037  Castilleja T. Lorenz 1972-4-18 1 Butte Found ca. 12 mi n w of Magalia on Centerville road. 609 Comment
  CAS-BOT-BC248934  Castilleja M. S. Taylor 1978-7-19 1776 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 1828 Comment
  SEINET10931253  Castilleja Mary Susan Taylor 1976-4-4 Taylor 1064 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC115404  Castilleja affinis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC115360  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte Steep east road cut, along Oregon Gluch Road, about one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  JEPS119872  Castilleja affinis subsp. affinis Lowell Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  JEPS124226  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  CAS-BOT-BC249594  Castilleja applegatei subsp. pinetorum L. R. Heckard; J. R. Sweeney 1953-4-27 345 A Butte Feather River Highway about 23 miles N.E. of Oroville 548 Comment
  JEPS115589  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC61014  Castilleja attenuata Lowell Ahart 1993-6-20 6995 Butte Jackass Flat, Mooreville Ridge, about 1 (air) miles north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC90166  Castilleja attenuata John Copeland 1980-3-7 15 Butte About 1.5 mi north on Meridian Road from Hwy 99, 1.0 mi east of dirt road, 1 ft north and south side of road. Comment
  JEPS105936  Castilleja campestris subsp. campestris Lowell Ahart 2004-4-4 10724 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  JEPS4561  Castilleja campestris subsp. campestris Harry A. Dutton 1921-4-25 Butte sw of Oroville Comment
  CHSC43166  Castilleja exserta Don Kroessig 1979-4-16 1 Butte On W side of Bruce Road 1.1 mile n of intersection with the Skyway. 76 Comment
  CHSC1825  Castilleja lacera L. Oliver; S. Sloan 1935-5-4 Butte Butte Creek Canyon. Comment
  CHSC24783  Castilleja lacera C. E. Stopher 1976-4-13 18 Butte 2.4 km s of Forest Ranch. Comment
  SEINET10549616  Castilleja miniata Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4195 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC107595  Castilleja tenuis Lowell Ahart 2011-7-9 17575 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC27264  Casuarina equisetifolia P. Moyer 1971-2-1 76 Butte CSUC campus. Cherry St. on sidewalk behind Engineering Bldg. 60 Comment
  UC403964  Catalpa speciosa C. H. Shinn 1897-1 Butte Chico Forest Station Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  CAS-BOT-BC40503  Caulanthus lasiophyllus Lowell Ahart 1974-4-30 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  SD2949  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CAS-BOT-BC48814  Ceanothus cuneatus John Thomas Howell 1962-6-15 37447 Butte Magalia 731 Comment
  SEINET12210610  Ceanothus cuneatus B. R. Parker 1976-1 2 Butte 1.5 mi NE of Oroville on SE side of Glen Drive. Chaparral-Oak woodland ecotone 111 Comment
  UC177593  Ceanothus cuneatus var. cuneatus H. M. Hall 1914-8-2 9831 Butte foothills near Bidwell Bar (near Mt. Ida Ranch), Sierra Nevada Mts. Comment
  CAS-BOT-BC64445  Ceanothus diversifolius Clarence R. Quick 1964-7-9 64 -72 Butte At head of Concow Creek. 1082 Comment
  CHSC45726  Ceanothus integerrimus var. californicus Richard Steward 1988-4-25 9 Butte Ca. 6 mi n, 1.8 mi nw of Paradise. 640 Comment
  CHSC55404  Ceanothus integerrimus var. macrothyrsus C. G. Morris 1991-4-18 14 Butte Collected 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  POM196019  Ceanothus integerrimus var. macrothyrsus E. B. Copeland 1929-7-14 838 Butte Jonesville. 1650 Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  UCD112164  Ceanothus lemmonii L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC1516  Ceanothus prostratus 1937-4-1 Butte Paradise. 609 Comment
  UCD123936  Ceanothus prostratus D. O. Burge 2007-5-11 921 e Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) north of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 deg. (True) NNW of Magalia. 850 Comment
  CHSC100800  Ceanothus velutinus R. A. Schlising; L. Janeway 1988-7-1 4547 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  JEPS113265  Centaurea cyanus Lowell Ahart 2007-5-16 13893 Butte Between the road to Bear Ranch Creek and Highway 70, north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  JEPS87515 Image available Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte w side of La Porte Road about 2 mi sw Clipper Mills 1066 Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC284502  Centaurea solstitialis Sally Bianco 1995-11-9 1052 Butte NE edge of Concow Lake, 13199 Concow Road Oroville 670 Comment
  CHSC69446  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CDA34755  Centaurium tenuiflorum L. Ahart 2009-6-19 15943 Butte North of trail to pond and table, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC46470  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3814 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC77992  Centunculus minimus Lowell Ahart 2000-5-13 8355 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC31913  Cephalanthus occidentalis var. californicus M. S. Taylor 1980-8-30 3324 Butte In Potter Ravine along creek at dirt rd crossing, betw. The High Rocks and Box Hall Flat, ca 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 304 Comment
  CAS-BOT-BC388174  Cerastium fontanum Javier Penalosa 1962-6-18 2451 Butte Near confluence of French and Peavine Crks. 609 Comment
  JEPS94432  Cerastium fontanum subsp. vulgare Lowell Ahart 1997-10-20 7920 Butte 3 air mi nw of Sly Creek Reservoir Dam (about 3/4 mi n of Golden Trout Crossing, on w side of sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river); South Fork of Feather River 914 Comment
  CHSC115479  Cerastium glomeratum L. P. Janeway; Emily Meigs Doe 2015-4-22 11667 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  CHSC118501  Cerastium glomeratum L. P. Janeway 2016-5-9 11954 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC42722  Cerastium glomeratum Lowell Ahart 1987-5-12 5625 Butte South of the dirt road, 1 1/2 miles east of Camp 18, south of Lumpkin Ridge Road, about 8 miles north-east of Feather Falls. 1280 Comment
  JEPS115843  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC101699  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  SFV1802  Cercis occidentalis B. Fuller 1961-4-1 s. n. Butte Butte Creek Canyon. Honeyrun Road below Paradise. Comment
  CHSC38641  Cercocarpus betuloides var. betuloides Vernon Oswald 1983-3-13 154 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  CHSC46079  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte Prune orchard, west of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville. 30 Comment
  CHSC30216  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz vernal pool, 0.4 mi se of jct of Pentz (Benum) Rd and Hwy 99, ca. 10 mi s of Chico. 54 Comment
  CHSC113128  Chamaesyce maculata Lowell Ahart 2013-11-18 19276 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC42957  Chamaesyce maculata Lowell Ahart 1987-7-3 5781 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
  CHSC76416  Chamaesyce maculata Lowell Ahart 1999-10-28 8309 Butte On the west side of a large pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles (air) southwest of Chico. 32 Comment
  JEPS115727  Chamaesyce maculata Lowell Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  JEPS94872  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte about 7 air mi n of Oroville (about 1/4 mi w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CHSC20970  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1975-8-31 900 Butte Ca. 30 ft n of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC113945  Chenopodium album Lowell Ahart 2014-8-13 19698 Butte About 10 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CDA3047  Chenopodium botrys L. Ahart 2006-9-11 13282 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  RSA718087  Chenopodium botrys L. Ahart 2006-7-16 12961 Butte Near the open mudflow area, on the S side (road edge) of Humboldt Road, about 1.5 miles (air) SW of Butte Meadows. 1436 Comment
  SEINET10479020  Chenopodium botrys Lowell Ahart 1984-6-8 Ahart 4672 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CDA3118  Chenopodium multifidum Vernon Oswald 2000-11-2 9981 Butte Chico Sweage Treatment Plant on Chico River Road west of Chico. Comment
  CDA3115  Chenopodium pumilio L. Ahart 2002-10-17 9990 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  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
  CHSC117751  Chenopodium strictum var. glaucophyllum Lowell Ahart 2016-10-25 21373 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC94161  Chimaphila umbellata Lowell Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  CHSC30089  Chlorogalum pomeridianum M. S. Taylor 1980-7-5 3053 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CDA20065  Chondrilla juncea E. Finley 2002-10-2 PDR 1035510 Butte Northern California; Lumpkin Rd near Enterprise Bridge. 0 Comment
  JEPS104224  Chondrilla juncea Lowell Ahart 2003-6-30 10331 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) n of Forbestown. 481 Comment
  RSA104166  Chorizanthe membranacea R. M. Austin 1883-1 s.n. Butte [No location data on label] Comment
  CHSC70994  Chorizanthe stellulata Vernon Oswald 1998-5-6 8986 Butte Upper Bidwell Park (new addition), Pine Trail near the trailhead on Hwy. 32 between Chico and Forest Ranch opposite Santos Rd. 452 Comment
  CHSC88960  Chorizanthe stellulata Christine Hantelman 2000-4-27 84 Butte On western end of vernal pool preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  SD8111  Chorizanthe stellulata Dr. C. C. Parry May 1882 Butte Chico Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  CAS-BOT-BC247537  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  SEINET10479755  Chorizanthe stellulata Mary Susan Taylor 1974-5-20 Taylor 236 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  CAS-BOT-BC36367  Chrysolepis sempervirens Saichi Kawahara 1968-5-5 397 Butte Bull and Skyway Road 1554 Comment
  RSA505436  Chrysothamnus parryi subsp. latior R. C. Bacigalupi 1957-7-26 6039 Butte Along road berm on the Humbug Road, 2.2 miles SW of Nimshaw, at eastern canyonside of Butte Creek 579 Comment
  CHSC29024  Cicendia quadrangularis M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2441 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  RSA325174  Cicendia quadrangularis M. S. Taylor, L. Ahart, Jim Jokerst 1984-4-6 5398 Butte Approximately 0.5 mile north of Kunkle Reservoir, on east side of Pentz-Magalia Highway, ca. three miles south of Paradise. Comment
  CHSC20493  Cichorium intybus M. S. Taylor 1975-6-25 795 Butte Along Mud Creek, ca. 1/4 mi N of Richardson Springs Hotel, ca. 6 mi NE of Chico. 121 Comment
  JEPS119735  Cichorium intybus Lowell Ahart 2012-6-14 18197 Butte Lower Bidwell Park, Chico. Comment
  SEINET10872095  Cichorium intybus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4125 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
  JEPS71174  Cinna latifolia A. L. Hormay 1929-7-20 Butte (10 mi se) Butte Meadows; se <of> Butte Meadows Comment
  UC478464  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville 1650 Comment
  SEINET10474555  Cirsium breweri Mary Susan Taylor 1978-7-19 Taylor 1747 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC39049  Cirsium occidentale var. candidissimum Lowell Ahart 1983-7-29 4242 Butte About 1 mi e of Milsap Bar, about 25 mi ne of Oroville. 750 Comment
  UC1071957  Clarkia biloba subsp. brandegeeae H. and M. Lewis 1947-6-11 394 Butte 7.0 mi nw Bangor (on road to Oroville) 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-BC164522  Clarkia gracilis subsp. albicaulis Frances Brown 1934-1-1 s.n. Butte Mountains above Chico Comment
  CHSC25259  Clarkia gracilis subsp. albicaulis M. S. Taylor 1977-6-26 1380 Butte In ditch on s side of Ponderosa Way, ca. 1 1/2 mi e of Cohasset. 609 Comment
  CHSC88639  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-29 354 Butte Plumas National Forest. 4WD Road off Concow Road. 853 Comment
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  UC1186583  Clarkia gracilis subsp. albicaulis G. I. Stage, R. W. Thorp 1959-6-21 59 -120 Butte 11.9 mi ne Chico (Highway 32) Comment
  CAS-BOT-BC171878  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-5-14 8663 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC71151  Clarkia mildrediae subsp. lutescens L. P. Janeway 1994-7-7 4684 Butte South side of ridge between Haphazard, Baker, and Foreman Creeks; 3.7 road mi west of Oroville-Quincy hwy and Rogers Cow Camp via Roads 23N15, 22N66X, and 22N40X. Southwest-facing road cutbank and above. 1158 Comment
  CAS-BOT-BC163278  Clarkia mildrediae subsp. mildrediae Gladys L. Smith 1976-6-5 4536 Butte Roadside banks of Lower Feather River Canyon, Rte. 70 548 Comment
  CHSC46132  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1984-7-19 4745 Butte Along a logging road, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  LA206073  Clarkia mildrediae subsp. mildrediae Harlan Lewis; M. Lewis, Frank C. Vasek 1950-6-30 760 Butte Hwy 24, 2.0 mi S of Arch Rock on Feather River Comment
  CHSC64112  Clarkia mosquinii L. P. Janeway; B. Castro 1994-7-6 4683 Butte West end of Jackson Ranch Ridge; 0.8 mi east-northeast of the falls of Feather Falls. 1051 Comment
  CHSC103995  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2010-5-14 16669 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 363 Comment
  CHSC46387  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-10 6224 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  CHSC70747  Clarkia rhomboidea L. P. Janeway 1993-6-16 4389 Butte Upper slopes, east-facing, in North Fork Feather River; along Hwy 70 1.1-1.3 mi northeast of Jarbo Gap. 670 Comment
  SD122550  Clarkia rhomboidea Lowell Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown; Yellow Pine Forest, 370 Comment
  SEINET10453162  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4651 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 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
  CHSC36088  Claytonia lanceolata R. A. Schlising; F. J. Fuller, K. Tarp 1982-7-12 4316 Butte NE part of county near Humbug Summit. 2042 Comment
  CHSC41312  Claytonia palustris S. C. Morey 1983-7-22 548 Butte Cherry Hill Meadow On n side of Humboldt Road, ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC59334  Claytonia parviflora J. L. Guardino 1992-4-16 7 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  CHSC60584  Claytonia parviflora subsp. grandiflora Vernon H. Oswald; Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  CHSC56067  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-6-16 2804 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. 1310 Comment
  RSA754940  Claytonia parviflora subsp. parviflora L. Ahart 2008-5-8 14718 Butte Lake Oroville, about 250-300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  JEPS115238  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2009-4-3 15534 Butte Along the north margin of the paved road, north of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC56076  Claytonia rubra subsp. rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  CHSC26641  Clematis lasiantha M. S. Taylor 1977-11-12 1543 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  UCD95626  Clematis lasiantha P. Thompson 1996-4-26 36 Butte Hwy 70. Along steep roadside next to a running creek. Comment
  POM98212  Clematis lasiantha C. C. Bruce 1897-04 1903 Butte Butte Creek. Comment
  UC83304  Cleome platycarpa Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC44298  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek reservoir. 1028 Comment
  CHSC48981  Collinsia parviflora Vernon Oswald; Lowell Ahart 1987-5-14 2398 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humbolt and Humbug Roads. 1780 Comment
  CHSC90148  Collinsia sparsiflora Joseph Silveira 1982-4-17 16 Butte 90 m south of Butte Creek and 66 m west-southwest of Covered Bridge, 10.2 km east-southeast of Chico. 34 Comment
  RSA633334  Collinsia sparsiflora Michael A. Vincent, Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  RSA754851  Collinsia tinctoria L. Ahart 2009-5-30 15785 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 0.5 mile (air) west of Highway 32, about 10 miles northeast of Chico. (GPS) 269 Comment
  SD7641  Collomia grandiflora Daniel Cleveland 1882-7-14 Butte Sutten House Comment
  SEINET2445717  Collomia heterophylla R. M. McKee 1918-5-26 s.n. Butte Stirling City, Calif. Comment
  POM219472  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. 1500 Comment
  UC478478  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte on gravel bars along creek Jonesville, Butte Creek 1500 Comment
  CHSC46361  Convolvulus arvensis Lowell Ahart 1989-5-23 6237 Butte Near a small stream, near a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  RSA770102  Conyza canadensis L. Ahart 2008-11-4 15396 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  CHSC25475  Cordylanthus pilosus subsp. hansenii L. Ahart 1977-6-16 1427 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42160  Cornus florida Beth Chambers; K. R. Stern 1986-4-4 1 Butte Creek population, Bidwell Park in Chico, along Big Chico Creek. 61 Comment
  CHSC101759  Cornus glabrata Lowell Ahart 2009-5-23 15733 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west 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
  JEPS88910  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  JEPS88911  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  SEINET12091577  Corydalis caseana Unknown 1983-1 4301 Butte ca 1 mi E of Butte Meadows, T26N, R4E, NW Section 28 1450 Comment
  CAS-BOT-BC401853  Corydalis caseana subsp. caseana Marion Ownbey; Gerald B. Ownbey 1946-6-24 2938 Butte At forks of Butte Creek, 1.3 mi. below Jonesville Comment
  CAS-BOT-BC401856  Corydalis caseana subsp. caseana Lowell Ahart 1987-10-17 5916 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow 1676 Comment
  UC398916  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CHSC46794  Corylus cornuta var. californica R. A. Schlising; P. F. Broyles 1987-6-26 4514 Butte 1.2 mi S of Inskip along Skyway. 1417 Comment
  CHSC39619  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC50643  Cotula australis Lowell Ahart 1990-5-28 6498 Butte Along the edges of Palm Avenue, near the old bridge, about 2 1/2 miles north-east of East Gridley. 30 Comment
  UC1562845  Cotula coronopifolia Barbara Ertter with Lowell Ahart 1986-4-13 5903 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  JEPS98453  Crassula aquatica Lowell Ahart 2000-5-21 8379 Butte 10 mi NW of Oroville (slickens from the Cherokee mine, E side of Clark Road (Hwy 191), 200 yds S of Dry Creek) 60 Comment
  SEINET9305827  Crassula connata Unknown 1963-3-22 63019 Butte Near summit of Sugarloaf Peak, Campbell Hills. In shallow soil on basalt. Comment
  CHSC40898  Crassula saginoides Lowell Ahart 1985-11-5 5227 Butte 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
  CHSC28752  Crassula tillaea J. D. Jokerst 1979-3-18 173 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico. 365 Comment
  CHSC4340  Crataegus monogyna Carl Pejsa 1966-5-18 30 Butte Bidwell Park Forestry Station. Comment
  CHSC109531  Crepis pleurocarpa L. P. Janeway 2012-6-23 10890 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
  CHSC33291  Croton setiger S. Posner 1972-9-24 2 Butte Edge of Skyway between Hwy. 99 and Humbug Rd. Comment
  CHSC47475  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte About 3 miles north-east of the Ponderosa Dam, about 3 miles north of Forbestown. 457 Comment
  JEPS80687  Crucianella angustifolia L. R. Heckard and T. I. Chuang 1981-6-11 5538 Butte ca 12 air mi e Oroville (along Forbestown Road 0.5 mi w of Lumpkin Road junction) 609 Comment
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Dec 21 2012
  SD116531  Crucianella angustifolia Barbara Ertter, L. Ahart, J. Strachan 1980-5-6 3282 Butte Peter Ahart Ranch ca 2I(c) mi NNE of Honcut between Oroville & Marysville, stream 29 Comment
  JEPS108961  Crypsis alopecuroides Lowell Ahart 2006-9-11 13302 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
  SEINET10518369  Crypsis schoenoides Lowell Ahart 1986-11-9 Ahart 5435 Butte On dry red rocky disturbed soil, below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 270 Comment
  UC1594584  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 Comment
  CHSC29968  Cryptantha flaccida R. A. Schlising 1979-5-8 3388 Butte E of Chico and SW of Paradise along Skyway. Comment
  UCD119835  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte along the dirt road near the water tower, above the generator, 1 mile east of Ponderosa Dam, 2 miles north of Forbestown. 475 Comment
  CHSC29972  Cryptantha milobakeri R. A. Schlising 1980-6-10 3673 Butte Along Humboldt Road, 1.9 mi NE jct with Hwy 32 at Loma. Comment
  NY16699  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UC335114  Cupressus macnabiana Lemmon Butte Bidwell's Comment
  CHSC100503  Cupressus sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15417 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC29817  Cuscuta californica M. S. Taylor; J. D. Jokerst 1979-10-13 2264 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  UC1609063  Cuscuta californica Lowell Ahart 1993-6-20 7001 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC44159  Cuscuta californica var. breviflora V. Oswald; L. Ahart 1988-7-29 3653 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC50547  Cuscuta californica var. californica Vernon Oswald; Lowell Ahart 1990-7-5 4348 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  HSC103931  Cuscuta campestris L. Ahart 2012-8-22 18423 Butte About 2 mi. (air) NW of Honcut; ~20 yds. S of Central House Road, on the east side of the Railroad, on the south side of the Railroad Signal Box. Parasite on Xanthium strumarium 36 Comment
  RSA795883  Cuscuta campestris L. Ahart 2012-8-22 18423 Butte South side of the Railroad Signal Box, east side of the railroad, about 20 yards south of Central House Road, about 2 air miles northwest of Honcut. 36 Comment
  JEPS120791  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of a large wash, about 1/2 mile SE of the Honcut Cemetery, about 3 1/4 air miles NE of Honcut. Comment
  CHSC55056  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte North side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), east of Oroville-Quincy Hwy, about 5 miles (air) north-east of Brush Creek. 1097 Comment
  CHSC106  Cycladenia humilis var. humilis 1951-4-24 Butte Forest Ranch. 609 Comment
  CHSC105534  Cymopterus terebinthinus var. californicus Lowell Ahart 2010-9-21 17233 Butte On dry rocky dark soil, on both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Resevoir Dam, about 7 miles (air) southeast of Butte Meadows. Comment
  CHSC2138  Cynodon dactylon H. Silberman; D. Isaac 1949-5-1 Butte Chico. 57 Comment
  CHSC28498  Cynodon dactylon M. S. Taylor 1979-8-4 2181 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Power house, ca. 30 mi n of Oroville. 487 Comment
  CDA38936  Cyperus acuminatus L. Ahart, Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC109792  Cyperus difformis Lowell Ahart 2012-10-20 18513 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC45260  Cyperus difformis L. P. Janeway 1986-9-20 1879 Butte Gravel bar along east side of Sacramento River just SE of the Ord Ferry Rd bridge. 28 Comment
  HSC87073  Cyperus difformis C. A. Janeway 1986-10-10 Butte Chico, gravel bar on N side of Chico Creek at 5-mile recreation area 79 Comment
  JEPS95922  Cyperus difformis Lowell Ahart 1999-8-13 8139 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET11750563  Cyperus difformis R. A. Schlising 1979-1 3503 Butte along Sacramento River W of Chico, just N of Chico Landing Site in Bidwell River State Comment
  CHSC37388  Cyperus eragrostis R. A. Schlising 1980-8-31 3977 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC45261  Cyperus eragrostis L. P. Janeway 1986-9-20 1877 Butte At edge of gravel bar along east side of Sacramento River, just SE of the Ord Ferry Rd bridge. 28 Comment
  CHSC68385  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte Along Durham-Pentz Road 0.7 mi east of Clark Road. 118 Comment
  CHSC76299  Cyperus eragrostis Lowell Ahart 1999-9-21 8272 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
  POM111773  Cyperus eragrostis C. C. Bruce 1897-05 1887 Butte Little Chico Comment
  SEINET3909602  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1871 Butte Northwest side of Little Chico Creek near River Road, about 2 mi south of Chico River Road.; 0 37 Comment
  POM219532  Cyperus esculentus H. F. Copeland 1923-8-13 550 Butte Nelson. Comment
  CHSC76405  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-10-3 8287 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
  CHSC110390  Cyperus niger Lowell Ahart 2012-9-28 18469 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC114022  Cyperus rotundus Ernest Bevan; Lorene Bevan 1974-11-24 s.n. Butte Near Honcut 36 Comment
  UCD141100  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CAS-BOT-BC114204  Cyperus strigosus Lowell Ahart 1982-10-11 3854 Butte West of the check-in-station, Gray Lodge, ca. 12 mi SW of Gridley. 35 Comment
  CHSC102739  Cyperus strigosus Lowell Ahart 2009-8-3 16256 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
  CHSC43293  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte 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
  CAS-BOT-BC68041  Cystopteris fragilis K. D. Marsh 1974-4-30 4 Butte Honey Run Rd, ca. 11 mi e of Chico Comment
  SEINET10535614  Cystopteris fragilis Mary Susan Taylor 1978-6-24 Taylor 1659 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  SEINET10535615  Cystopteris fragilis Mary Susan Taylor 1979-9-28 Taylor 2192 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET11716735  Cystopteris fragilis M. S. Taylor, Jokerst, J. D.; Ahart, L. 1980-1 3203 Butte Humboldt Peak 2155 Comment
  POM219142  Danthonia californica var. americana H. F. Copeland 1931-6-11 1558 Butte Butte Creek Meadows Comment
  SEINET10483089  Darmera peltata Mary Susan Taylor 1981-5-7 Taylor 3636 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
  CHSC45735  Datura wrightii Elizabeth L. Knight 1988-4-15 7 Butte At Parrott Landing ca. 50 ft e of Sacramento River ca. 11 m sw of Chico. River bank. 30 Comment
  CHSC42578  Daucus carota Vernon Oswald 1985-5-20 1764 Butte Lower Hgoncut Rd. 0.1 mi e of N. Honcut Creek. Comment
  CHSC4033  Delphinium gracilentum Sadie Gualtieri 1967-3-6 Butte Collected: on Skyway to Paradise, 3 to 5 miles outside Chico; fields on S. side of hiway. Comment
  JEPS117186  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico 144 Comment
  CHSC56579  Delphinium hesperium subsp. hesperium J. D. Jokerst 1981-5-11 1308 Butte Top of Doe Mill Ridge, center. 457 Comment
  CHSC38163  Delphinium nudicaule Vernon Oswald 1983-3-4 108 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  CHSC30886  Delphinium patens subsp. patens J. D. Jokerst 1979-3-20 1153 Butte Top of North Table Mt, W edge of Mt at the waterfall of the South branch of Coal Cr. 365 Comment
  CHSC22990  Delphinium variegatum Robert A. Schlising; L. Thurman, T. Crovello 1963-6-7 2617 Butte Sierra Nevada. Foothills. 3.1 mi. s. Cohasset along Cohasset Hwy. Comment
  CHSC53298  Delphinium variegatum R. J. Goedl 1976-4-20 1 Butte Ca. 6.4 mi se of Chico on Skyway, 25 yds s of Highway. Field. 213 Comment
  CHSC26780  Dendromecon rigida M. S. Taylor 1978-5-6 1580 Butte Magalia. 609 Comment
  CHSC45024  Dendromecon rigida J. Marr 1988-3-18 8 Butte On n side of Concow Rd, 4 mi. from Hwy 70, 18 mi n of Oroville. 365 Comment
  CHSC26799  Deschampsia danthonioides M. S. Taylor; M. Hayes 1978-4-14 1547 Butte In vernal pools on e side of Williams Rd ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CAS-BOT-BC201743  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. On the banks of North Honcut Creek 50 Comment
  CAS-BOT-BC201746  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC31710  Deschampsia elongata L. Ahart 1977-6-16 1424 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC94288  Deschampsia elongata Lowell Ahart 2006-7-16 12996 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  SEINET10965506  Dianthus armeria Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4065 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC24137  Dicentra formosa D. E. Hale 1976-4-20 13 Butte On n margin of Paradise Reservoir. Slope above Reservoir. 609 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
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CHSC19645  Dicentra formosa subsp. formosa K. Stern 1966-4-1 Butte Chico. Comment
  CHSC90588  Dichelostemma capitatum subsp. capitatum L. Orme 1980-3-20 7 Butte Clark Road, 3.2 km. S. of Paradise. Found on hillside. 370 Comment
  CHSC109154  Dichelostemma congestum Lowell Ahart 2012-5-12 18029 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico 237 Comment
  CHSC38767  Dichelostemma congestum Vernon Oswald 1983-5-23 543 Butte Upper Bidwell Park, Chico, near Yahi Trail of Brown's Hole. 207 Comment
  CAS-BOT-BC501079  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte 2 1/2 miles SE of Orovill eon road to Wyandotte, Sierra Nevada Foothills 91 Comment
  CAS-BOT-BC501082  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles SW of Oroville on Highway 24 Comment
  CAS-BOT-BC501094  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  CHSC4716  Dichelostemma volubile R. Carter 1966-4-30 387 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CAS-BOT-BC502513  Dichelostemma volubile Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC502516  Dichelostemma volubile A. A. Heller 1913-5-28 I 0765 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CAS-BOT-BC502521  Dichelostemma volubile L. S. Rose 1931-4-14 s.n. Butte Three miles east of Oroville Comment
  SEINET12051034  Dichelostemma volubile S. A. Carter 1988-1 s.n. Butte S side of Little Butte Creek, ca 8.8 mi ESE of Chico, ca 100 ft W of Honey Run Rd 160 Comment
  SEINET10496684  Dichondra donelliana Mary Susan Taylor 1980-5-24 Taylor 2739 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD123713  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte at loop in road above Discovery Creek. ca. 1 mile north of Bald Mt., ca. 4 miles northeast of Stirling City. 1584 Comment
  JEPS95153  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Oroville, at the Butte County Historical Society Museum Butte County Historical Society Museum; Oroville, Butte County Historical Society Museum 60 Comment
  CHSC37110  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  JEPS119518  Digitaria sanguinalis Lowell Ahart 2011-10-29 17728 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC62335  Diospyros B. Castro 1990-5-6 421 Butte Within the Chico Tree Improvement Center at SE edge of Chico, via Morrow Lane, close to banks of a branch of Comanche Creek (or 'Edgar Slough'). 70 Comment
  CHSC44762  Diplacus grandiflorus R. Banchero 1980-5-12 151 Butte Along Hwy 70, 1.7 mi N of Jarbo Gap, 3.6 mi SW of the jct of Hwy 70 and the Feather River. 658 Comment
  CHSC44747  Diplacus kelloggii R. Banchero 1980-4-7 94 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy, Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CHSC93965  Diplacus layneae R. D. Fischer 2004-6-20 761 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CAS-BOT-BC154027  Diplacus torreyi L. P. Janeway 1993-7-7 4434 Butte Along dirt road to the bear Ranch Creek falls, 0.7 mi south of Arch Rock Tunnel; canyon of North Fork Feather River 502 Comment
  CHSC59367  Disporum hookeri L. P. Janeway; B. Castro 1992-4-21 4154 Butte About 200 ft north of Ram Creek and ca 1 mi east of French Creek. 670 Comment
  UC600767  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CHSC13898  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 177 Butte 3.8 mi ne on Cherokee Road from Table Mountain Road; on northwest side of road in open grassy meadow near oak tree. Comment
  CHSC4222  Dodecatheon clevelandii subsp. patulum R. Carter 1966-3-22 314 Butte Found ca. 5 mi. NE Orovilla on top Table Mt.; 10 yds off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. Comment
  SEINET194858 Image available Dodecatheon hendersonii A. A. Heller 1938-4-3 15011 Butte Table Mountain, near Cherokee. Comment
  CDA6254  Dopatrium junceum L. L. Davis 1944-8-23 Butte Biggs Rice Field Station, Biggs. 0 Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  SD122580  Downingia bella Lowell Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca. 1.5 mile north and 0.5 mile east of Honcut., 12 miles south of Oroville. 49 Comment
  RSA517016  Downingia bicornuta Barbara Ertter, L. Ahart 1986-4-13 5902 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  CHSC47396  Downingia cuspidata Lowell Ahart 1978-5-2 1701 Butte Growing in shallow water in a vernal pool, near the large parking area on top of Table Mountain, about 7 miles north of Oroville. 426 Comment
  CHSC76938  Downingia insignis Ida Ryan 1893-5-1 Butte Near Nelson. Comment
  UC2048627  Downingia insignis Lisa Schultheis 1995-6-9 212 -95 Butte North of Sutter Buttes. Gray Lodge Wildlife Refuge, west side of Pennington Road, 0.3 mile north of Sutter/Butte County Line. Comment
  CHSC26279  Downingia ornatissima J. H. Moyer 1975-5-6 23 Butte In ditch along Hiway 99 ca. 17.6 km. se of Chico, near the junction to Hiway 149. 65 Comment
  POM257240  Downingia ornatissima H. L. Mason 1927-5-9 3708 Butte Sacramento Valley, 15 miles W of Oroville. Comment
  UC1124235  Draperia systyla P. L. Johannsen 1936-7-28 966 Butte 2.25 mi n junction of Butte Creek and Secret Creek; Paynes Creek Quad. 1280 Comment
  UCD119198  Draperia systyla Grady L. Webster 1992-5-16 7761 Butte c. 1.5 mi SW Cresta Power House, N Fork Feather River. 457 Comment
  JEPS115701  Drymocallis glandulosa var. reflexa Lowell Ahart 2009-5-23 15739 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  CHSC12121  Dryopteris arguta M. F. Smith 1972-4-22 10 Butte 500 yds. Southeast from intersection of Madrone Meadows Road and old Georgia Pacific Railroad bed. South of Feather Falls Community. 914 Comment
  SEINET10530140  Dryopteris arguta Mary Susan Taylor 1979-10-13 Taylor 2267 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 Comment
  CHSC3244  Dudleya cymosa Virginia Hagaman 1966-4-17 118 Butte 6.3 miles east of Chico State College, on the side of road in Upper Bidwell Park above Salmon Hole. Comment
  CHSC36120  Dudleya cymosa K. Bridwell 1978-5-25 114 Butte Along n side of Skyway Rd, ca. 3 mi sw of Paradise. 609 Comment
  CHSC43600  Dysphania multifida Vernon Oswald 1983-10-10 1057 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC76276  Dysphania pumilio Lowell Ahart 1999-9-21 8279 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC197094  Echinochloa crus-galli Ira L. Wiggins 1928-9-9 3338 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET10868957  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4791 A Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET10934803  Echinochloa crus-galli Mary Susan Taylor 1978-9-8 Taylor 1886 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC208564  Echinochloa oryzicola Lowell Ahart 1984-9-17 4792 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  JEPS119523  Eclipta prostrata Lowell Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  RSA0011838  Elaeagnus angustifolia L. Ahart, Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  CHSC111507  Elatine Lowell Ahart 2014-4-17 19380 Butte On dry gray clay soil, bottom of a rice field, about 20 yards north of Hailton Road, about 1/2 mile east of Riceton Highway, about 2 1/2 miles (air) noth of Biggs. Agricultural. 30 Comment
  CHSC115324  Elatine Lowell Ahart 2015-4-24 20065 Butte Bottom of a large duck field, 50 yards north of Parking Lot 2, about 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  JEPS124129  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte About 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) north of Biggs. Comment
  RSA0118699  Elatine californica Lowell A. Ahart 2014-4-30 19420 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1.75 miles (air) southwest of Honcut. 24 Comment
  CHSC40907  Elatine heterandra Lowell Ahart 1985-11-7 5231 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  SEINET10447969  Elatine rubella Mary Susan Taylor 1978-7-22 Taylor 1850 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  POM313057  Eleocharis acicularis var. acicularis H. L. Mason, Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, Butte Sink Comment
  CDA38953  Eleocharis bella L. Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  RSA715927  Eleocharis decumbens L. Ahart 2000-6-29 8541 Butte Flea meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  CHSC42382  Eleocharis engelmannii Lowell Ahart 1987-5-10 5607 Butte In an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC78925  Eleocharis engelmannii Lowell Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  CHSC84012  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET3441882  Eleocharis engelmannii Unknown 2000-7-4 8445 Butte Forbestown, Forbestown, about 3.5 air miles southwest, south of the intersection of Black Bart Road and Forbestown Road 730 Comment
  CHSC117431  Eleocharis macrostachya Lowell Ahart 2016-5-30 20893 Butte North of Little Pump and along the north fence, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC39338  Eleocharis macrostachya Lowell Ahart 1983-6-26 4144 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road insteaad of Ponderosa Way. 550 Comment
  CHSC56612  Eleocharis macrostachya L. P. Janeway 1988-5-29 2708 Butte Low in the canyon of Little Chico Creek, ca 2 mi south of Ten Mile House. 256 Comment
  CHSC68439  Eleocharis macrostachya L. P. Janeway 1988-6-29 2907 Butte Spring where Crouch Ravine fades into Cool Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  CHSC8754  Eleocharis macrostachya S. Chulasmai 1966-5-20 39 Butte Horse-shoe (mud) Lake. Comment
  SEINET13709963  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8411 Butte 2 Mi. S of Paradise, 1/4 Mi. NE of Kunkle Reservoir (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  SEINET13710024  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8386 Butte 13 Mi. SE of Oroville (T17N, R4E, sec 12, SE 1/4) 180 Ft. 55 Comment
  HSC96912  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte W of the cow chute and parking lot on W side of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 404 Comment
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  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
  JEPS98610  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC46880  Eleocharis suksdorfiana Vernon Oswald 1989-8-29 3971 Butte Boy Scout Camp at Chico Meadows, ca. 1 mi n of Butte Meadows. Bogs on the sloping meadow bordering Big Chico Creek near the impounded 'swimming hole. 1280 Comment
  CAS-BOT-BC227296  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC203419  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 6165 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC31714  Elymus multisetus L. Ahart 1977-6-16 1419 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 Comment
  CAS-BOT-BC409192  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  JEPS119567  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC37441  Epilobium brachycarpum R. A. Schlising 1981-9-20 4199 Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. In ditch. Comment
  UCD105944  Epilobium campestre M. S. Taylor 1980-7-6 3054 Butte Ca. 1 mile E of Meridian Road, ca. 1.25 miles NE of its junction with Highway 99, ca. 8 miles N of Chico. 67 Comment
  CHSC26296  Epilobium canum subsp. latifolium J. P. Kroessig 1977-8-1 22 Butte E margin of Hwy 32, ca 6 km wsw of Butte Meadows. Roadside. 1098 Comment
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  JEPS115361  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2009-7-9 16003 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
  POM183926  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-08 s.n. Butte Jonesville, in woods along Butte Creek 1500 Comment
  CHSC28718  Epilobium cleistogamum R. A. Schlising 1979-8-17 3470 Butte Richvale vernal pools, 1/4 mile S of jct Hwy162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. In vernal pool. Comment
  CHSC46144  Epilobium cleistogamum Lowell Ahart 1978-5-15 1728 Butte On the bottom of a vernal pool, in a pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS117551  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS105893  Epilobium densiflorum Lowell Ahart 2004-7-20 11287 Butte On the north side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 30 Comment
  UC873154  Epilobium densiflorum A. A. Heller 1914-7-13 11564 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  SBBG126098  Epilobium foliosum L. Ahart 2012-6-2 18141 Butte S edge of Truex Rd, ca 40 yards E of intersection of Truex Rd and Trevor Rd, ca 1/8 mi NW of W Branch Bridge across Lake Oroville 306 Comment
  CHSC46576  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald 1989-7-18 3862 Butte Humboldt Rd east of Butte Meadows, ca. 0.5 mi sw of the Butte Creek Bridge at Cherry Hill. Meadow bordering Butte Creek. 1389 Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC46581  Epilobium hornemannii subsp. hornemannii V. Oswald; L. Ahart 1989-7-12 3850 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. On the edge of a stream on the slope above the meadow. 1926 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
  RSA0118759  Epilobium oregonense Lowell A. Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC35107  Epilobium pallidum R. A. Schlising; Ikeda, Jokerst, Taylor 1980-5-8 3590 Butte NE of Chico Airport and WSW of Richardson Springs; at vernal pool on Cohasset Ridge. 249 Comment
  SEINET10939941  Epilobium paniculatum Mary Susan Taylor 1977-8-19 Taylor 1504 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
  SEINET3449326  Epilobium pygmaeum Unknown 2003-6-23 10313 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  JEPS119896  Epilobium torreyi Lowell Ahart 2012-6-5 18157 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  SEINET9765342 Image available Equisetum hyemale Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CHSC57331  Equisetum hyemale subsp. affine Michelle T. Wagner 1990-4-19 17 Butte 3 mi e of Butte Meadows, 25 ft sw of creek. 762 Comment
  UC398880  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville Comment
  CAS-BOT-BC57253  Equisetum laevigatum Lowell Ahart 1981-4-9 2752 Butte Peter Ahart Ranch, Honcut, edge of North Honcut Creek 50 Comment
  SEINET10562503  Eragrostis cilianensis A. Arthur Heller 1914-6-2 Heller 11478 Butte Hills 8 miles north of Oroville. Comment
  CHSC49243  Eragrostis pectinacea var. pectinacea Vernon Oswald 1987-5-26 2933 Butte Bancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC51038  Eragrostis pectinacea var. pectinacea Lowell Ahart 1990-7-15 6558 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS95983  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 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
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 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 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CHSC44115  Eremogone cliftonii L. P. Janeway; R. A. Schlising 1987-6-26 2307 Butte Above Camp Cr 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
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Jul 8 2014
  CHSC90974  Eremogone cliftonii L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8378 Butte Northern High Sierra Nevada. Plumas National Forest; just above Road 23N02 0.2 km north of County Road 66553; top of a minor drainage into Camp Creek but 0.5 km east of Dogwood Creek. 1073 Comment
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Jul 8 2014
  CHSC31612  Erigeron bonariensis L. Ahart 1975-7-1 828 Butte Around the barn, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45264  Erigeron bonariensis Vernon Oswald 1988-10-25 3711 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC97735  Erigeron bonariensis Lowell Ahart 2007-11-3 14574 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  CHSC26623  Erigeron canadensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC38343  Erigeron divergens Vernon Oswald 1982-5-3 Butte Bidwell Park, Chico. Just below the north rim ca. 800 ft w of the power lines. 207 Comment
  SD116546  Erigeron foliosus var. hartwegii Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-8 3321 Butte North Honcut Creek on Peter Ahart Ranch; 2.5 miles northeast of Honcut between Marysville and Oroville. 45 Comment
  UC1594581  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte along gulch about 1.25 mi w Oroville Dam; Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  CAS-BOT-BC300689  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 1800 Comment
  CHSC48151  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 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 streamley draining the largest lake into Butte Creek. 1935 Comment
  CHSC48150  Erigeron lassenianus var. lassenianus Vernon Oswald 1984-7-2 1340 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  UC1730265  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft SW of the Gap 1280 Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC20971  Erigeron sumatrensis M. S. Taylor 1975-9-8 903 Butte Along Big Chico Creek, California State University, Chico, campus. 60 Comment
  HSC97192  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte South side of O'Brien Rd., about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC116207  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 300 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1252 Comment
  SEINET10479808  Eriogonum latifolium subsp. nudum Mary Susan Taylor 1975-6-30 Taylor 814 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC1338  Eriogonum luteolum var. luteolum R. M. Staley 1952-7-13 Butte Ponderosa road N. of De Sabla. Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  CHSC39136  Eriogonum nudum var. pubiflorum R. A. Schlising; K. Tarp 1982-7-24 4340 Butte E of Stirling City, at Creek in Breakneck Canyon. 1417 Comment
  CHSC45487  Eriogonum roseum Lowell Ahart 1975-9-4 982 Butte Along the edges of Ponderosa Way, about 2 miles south-west of Feather Falls, about 1 1/2 miles north-west of the Ponderosa Dam. 396 Comment
  CHSC45370  Eriogonum spergulinum var. reddingianum Vernon Oswald; Lowell Ahart 1987-6-10 2980 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  CHSC117339  Eriogonum umbellatum var. ahartii L. P. Janeway 2016-8-8 12144 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  SEINET5332483 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highwya 70 in Feather River Canon at the turnoff to Pulga. Comment
  CAS-BOT-BC265209  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga Bridge, ca. 20 mi ne of Oroville 487 Comment
  CHSC98660  Eriogonum ursinum var. ursinum B. Castro; L. P. Janeway 2005-8-8 1513 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. E-facing upper edge of knoll on rocky serpentine ridge within patchy lower Mixed Conifer forest. 1021 Comment
  CHSC34019  Eriogonum vimineum L. Ahart 1981-7-18 2941 Butte On dry gravelly sandy soil in the burrow area ca. 4.5 mi sw of Oroville. Plant is scattered along the dirt rd near the base of the levee. 35 Comment
  CAS-BOT-BC262343  Eriogonum vimineum Lowell Ahart 1981-8-11 3026 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC301305  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte Near Stirling 1074 Comment
  SEINET10904848  Eriophyllum lanatum var. croceum Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3520 Butte T22N R4E nw sec 2, Pulga SW quad. E side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on hwy 70, ca. 21 air mi n of Oroville. Yellow Pine Forest, on granitic soils; 2400 ft. 731 Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CAS-BOT-BC308148  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile southeast of Lumpkin Ridge Road about 1 1/2 miles east of Camp 18 about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC308150  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1899-4-1 s.n. Butte Chico 152 Comment
  CHSC48154  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1987-7-16 3134 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. 1487 Comment
  CHSC99548  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2008-6-15 9414 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  CAS-BOT-BC308164  Eriophyllum lanatum var. grandiflorum Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC4072  Erodium botrys H. E. Lindahl 1967-3-25 17 Butte Located ca 40 ft. s of intersection of Durham-Oroville Highway and Chico-Oroville highway. 60 Comment
  SEINET7057334  Erodium botrys Richard R. Halse 2002-3-27 6154 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway ca. 8 miles northwest of Chico. Elevation 40 meter. 40 Comment
  CHSC108790  Erodium brachycarpum Lowell Ahart 2012-4-9 17844 Butte Near the high east cliff edge of Big Chico Creek, about 5 yads west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC101331  Erodium cicutarium Lowell Ahart 2009-4-22 15579 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SEINET8565597  Erodium cicutarium A. R. James 1963-4-16 s.n. Butte Chico. 61 Comment
  CHSC3907  Erodium moschatum J. Wheler 1967-5-20 30 Butte Along west side of house at 248 Serviss St. Durham. Comment
  UC203586  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  CHSC38734  Eryngium castrense Vernon Oswald 1983-5-8 456 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  SEINET12118292  Eryngium vaseyi var. castrense Unknown 1936-1 13044 Butte along Mud Creek, near Chico Comment
  CHSC3369  Erythranthe glaucescens M. Gregg 1966-4-23 99 Butte In front of Paradise water reservior number 73. On the Skyway. Comment
  CHSC44778  Erythranthe glaucescens R. Banchero 1980-3-23 75 Butte Along Crown Point Rd, 0.5 mi from its jct with Hwy 32. 539 Comment
  CHSC44822  Erythranthe glaucescens R. Banchero 1980-4-26 130 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC54452  Erythranthe guttata Vernon H. Oswald; Lowell Ahart 1991-7-15 4741 Butte Milsap Bar Rd (Forest Rd 22N62), 6.4 miles west of Feather Falls-Little Grass Valley Rd (Forest Rd 22N94), ca 5.5 miles (air) east-northeast of Brush Creek. 845 Comment
  CHSC20117  Erythranthe microphylla M. S. Taylor 1975-4-26 534 Butte SE corner of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC48999  Erythranthe microphylla Vernon Oswald 1984-3-26 1111 Butte Hamilton-Nord-Cana Hwy, 0.5 mi n of Bennett Rd. 48 Comment
  SEINET8399965  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  CHSC3602  Erythranthe nasuta Gerry Carrauthers 1966-2-28 27 Butte Ca. 8 mi N.E. of Chico ca. 3 mi N.E. of Bidwell Golf Course near Chico Creek Salmon Hole. Comment
  CHSC44687  Erythranthe nasuta R. Banchero 1980-4-13 108 Butte Doe Mill Ridge, ca 2.0 mi SW of the Covered Bridge. 213 Comment
  SEINET10469666  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3428 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
  CDA14073  Erythronium multiscapideum G. F. Hrusa, T. D. Wilfred 1997-5-1 13720 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Comment
  CHSC44308  Eschscholzia caespitosa Lowell Ahart 1988-3-27 5938 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gab. 335 Comment
  RSA3783  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  CHSC67258  Eschscholzia californica James D. Jokerst 1989-4-8 3093 Butte North Table Mtn., near and S of large vernal pool near old burned down barn. Comment
  CAS-BOT-BC402964  Eschscholzia californica Mrs. C. C. Bruce 1893-3-1 2020 Butte Unspecified Comment
  CHSC4000  Eschscholzia lobbii L. R. Alexander 1967-4-2 4 Butte Found 1 mi. from Chico on Paradise road on left hand side of road. 60 Comment
  SEINET10476227  Eschscholzia lobbii Mary Susan Taylor 1975-4-26 Taylor 509 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET10453765  Euphorbia hooveri Mary Susan Taylor 1980-1 Butte Comment
  CAS-BOT-BC312199  Eurybia radulina Lowell Ahart 1985-8-15 5166 Butte About 2 miles south-west of Forbestown about 2 miles north-east of Robinson Mill Road 762 Comment
  SEINET10474656  Evax caulescens Lowell Ahart 1983-5-12 Ahart 3975 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
  JEPS120928  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  UC1562328  Festuca elmeri Vernon Oswald and Lowell Ahart 1990-6-27 4325 Butte ca 0.5 mi (air) ne Junction House (site) (Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, e side of Oro-Quincy Hwy) 1109 Comment
  CHSC111379  Festuca myuros Lowell Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CDA14179  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Small colonies of bunching individuals in dry, deep shade of coniferous forest. Perennial Comment
  CHSC111966  Festuca perennis Lowell Ahart 2012-6-14 18189 Butte On the south side of the path, lawn, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC61369  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte On the sides of a stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC99566  Festuca subuliflora L. P. Janeway 2008-6-22 9432 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  RSA337396  Festuca subuliflora L. Ahart, P. Ahart 1984-6-10 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CAS-BOT-BC77691  Ficus carica John Thomas Howell 1961-9-22 36750 Butte Feather River Highway 3 miles from Oroville Comment
  CHSC95173  Filago californica R. D. Fischer 2004-4-28 798 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants growing at the south end of Disc Golf Course. 396 Comment
  RSA196149  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC437078  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC437081  Fragaria virginiana subsp. platypetala H. F. Copeland 1929-6-10 1206 Butte Jonesville 1524 Comment
  CAS-BOT-BC62902  Frangula californica subsp. tomentella John Thomas Howell 1955-6-14 30446 Butte Magalia. 731 Comment
  CAS-BOT-BC62905  Frangula californica subsp. tomentella A. A. Heller 1912-5-23 10753 Butte Table Mountain Olive Ranch n. of Oroville. Comment
  JEPS119744  Frangula californica subsp. tomentella Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte On the sides of a horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC55649  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  CHSC86860  Frangula rubra L. P. Janeway; John Hunt 2003-7-11 7896 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 1.1 km north-northeast of mouth of French Creek. 296 Comment
  CHSC33998  Fraxinus americana Carl Pejsa 1980-4-12 51 Butte Bidwell Park Forestry Station. Comment
  LA50899  Fraxinus dipetala A. A. Heller; 1915-4-12 11815 Butte hills 14 mi NE of Chico near Rock creek Comment
  CHSC3019  Fraxinus latifolia Carl Pejsa 1958-4-19 53 Butte Bidwell Park Forestry Station. Comment
  CHSC4661  Fritillaria affinis R. Carter 1966-3-13 301 Butte Found ca. 6 mi. E of Chico at intersection of HoneyRun Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  POM109764  Fritillaria pluriflora C. C. Bruce 1897-02 s.n. Butte Fields Comment
  UC726736  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte near Stirling Comment
  CAS-BOT-BC508151  Fritillaria recurva A. A. Heller 1919-5-17 s.n. Butte Banks of the Feather river near Stirling Comment
  CHSC99097  Fumaria officinalis Elena Alfieri 2008-5-19 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Located on a shaded, southeast-facing slope overlooking the Big Chico Creek picnic area, and adjacent to Wildwood road (just before it dead ends); north side of Lindo Channel near its beginning at Big Chico Creek. 85 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  SEINET10836823  Galium bolanderi Mary Susan Taylor 1981-5-29 Taylor 3815 Butte T22N R5E ne sec 22, Pulga SW quad. Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. Comment
  SEINET10500720  Galium grayanum Mary Susan Taylor 1978-7-18 Taylor 1704 A Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC109594  Galium murale Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-14 18104 Butte Along the west side of the horse trail, north of Table 25, north of Cedar Grove, Lower Bidwell Park, Chico. 71 Comment
  CHSC26731  Galium murale M. S. Taylor; M. Hayes 1978-4-14 1551 Butte On E side of Williams Rd, ca. 1/4 mi N of Pentz Rd, on Butte College campus, ca. 15 mi S of Chico. 30 Comment
  JEPS127073  Galium parisiense Lowell Ahart 2016-5-30 20901 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC39240  Galium porrigens var. tenue M. S. Taylor; K. Tharp 1983-3-12 5233 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi SSE of Chico. 152 Comment
  CHSC64216  Galium porrigens var. tenue Mike Carpenter 1990-3-30 13 Butte Ca. 450 ft. E of Forbes Town Rd. Ca. 1.1 mi S of the intersection of Hwy. 162 and Forbes Town Rd. 728 Comment
  CHSC7105  Galium porrigens var. tenue Harley J. Parmenter 1969-2-11 7 Butte 40 yds. N of the entrance to Burtons Mesa. 298 Comment
  HSC32625  Galium tricornutum Patricia Datzman 1974-4-20 18 Butte 300 yds. S of the intersection of Pentz Rd. and Clarke Rd. Comment
  SD4933  Galium trifidum subsp. columbianum E. B. Copeland 1930-7-6 475 Butte Jonesville, north slope, under melting snowbank 2000 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
  CHSC116733  Gamochaeta ustulata Lowell Ahart 2016-5-25 20878 Butte 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
  CAS-BOT-BC303384  Gamochaeta ustulata Lowell Ahart 1984-6-10 4688 Butte Along the edge of a new subdivision road about 1 mile SE of Hurleton, 1/12 mile E of the Oak Grove Cemetary, about 10 miles E of Oroville 500 Comment
  UC1122706  Garrya fremontii J. E. Sowder 1933-7-14 112 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  CHSC93483  Gastridium phleoides Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  RSA129645  Gastridium phleoides P. L. Johannsen 1935-5-27 677 Butte 4 miles SE of Chico. 84 Comment
  SEINET10559582  Gastridium phleoides A. Arthur Heller 1902-5-15 Heller 5555 Butte Near Biggs. Comment
  UCSC000103  Gastridium ventricosum C. G. Albertus 1933-5-29 s.n. Butte 0.5 mile N. of Wiek - Chico Comment
  CAS-BOT-BC56293  Gaultheria ovatifolia Clarence R. Quick 1965-7-27 65 -23 Butte along Lewis Creek near Lewis Flat, NE of Challenge 1066 Comment
  CHSC26705  Gayophytum diffusum subsp. parviflorum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1459 Butte On e side of Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC37444  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-3 4130 Butte E of Philbrook Reservoir; at trailside. 1828 Comment
  RSA183995  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-22 s.n. Butte Jonesville, below the summit of ridge SE of the head of Butte Creek 2000 Comment
  UC600544  Gayophytum humile H. F. Copeland 1932-7-24 Butte Butte Creek Canyon Jonesville (w wall, near headwaters) Comment
  CAS-BOT-BC208056  Genista monspessulana Saichi Kawahara 1968-5-4 385 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC84630  Genista monspessulana A. Rutherford 2002-4-30 4 Butte Paradise Lake, Lucretia Road. Comment
  CHSC51883  Gentianopsis simplex L. P. Janeway 1988-7-29 3106 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  JEPS115322  Geranium dissectum Lowell Ahart 2009-5-8 15663 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
  CHSC38455  Geranium molle Vernon Oswald 1983-3-31 233 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  JEPS115328  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  RSA754864  Geranium purpureum L. Ahart, Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte S side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  CHSC41372  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-6-12 3693 Butte 0.25 mi S of Tehama County line on Highway 32 near Lomo. 1121 Comment
  RSA550616  Gilia capitata subsp. mediomontana C. R. Quick 1951-6-6 51 -90 Butte N of Soda Springs on Big Chico Creek Comment
  CHSC90252  Gilia tricolor Camela J. Ott 1989-3-14 1 Butte Population in vic. of Salmon Hole, upper Bidwell Park, ca. 3 mi e of Chico Municipal Golf Course. 106 Comment
  UC172852  Gilia tricolor subsp. tricolor A. A. Heller 1913-4-7 10724 Butte hills six mi n Oroville; n of Oroville Comment
  SEINET10906426  Githopsis pulchella subsp. campestris A. Arthur Heller 1937-5-31 Heller s.n. Butte Comment
  CHSC116983  Githopsis specularioides Lowell Ahart 2016-6-4 20932 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC8568  Gleditsia triacanthos M. MacArthur 1968-6-13 362 Butte Chico State College Campus. 60 Comment
  CHSC112788  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte Drying edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC97251  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  RSA0106686  Glinus lotoides Lowell Ahart 2014-9-23 19869 Butte Northeast part of Horsehoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  SEINET10843174  Glyceria elata A. Arthur Heller 1928-7-10 Heller 14694 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  RSA126641  Glyceria striata P. L. Johannsen 1936-7-17 939 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC113474  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10872104  Gnaphalium purpureum Lowell Ahart 1984-6-8 Ahart 4660 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC37092  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte Ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  CHSC82258  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 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
  SEINET13768180  Gratiola ebracteata B. Ertter 1980-5-5 3266 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  SEINET10969144  Hackelia nervosa Mary Susan Taylor 1978-7-18 Taylor 1711 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC93979  Helenium bigelovii R. D. Fischer 2004-6-20 770 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 north of pond along the eastern meadow edge. 1371 Comment
  JEPS113570  Helenium puberulum Lowell Ahart 2007-7-27 14399 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  JEPS120538  Helenium puberulum B. Castro, Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Hwy 99, 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal. On W side of canal ~ 20 ft in from toe of W levee. Comment
  CHSC38359  Helianthus bolanderi Vernon Oswald 1983-6-29 796 Butte Upper Bidwell Park, Chico, ca. 300 ft s of Upper Park Rd. and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC13813  Heliotropium curassavicum K. R. Stern 1972-9-19 3778 Butte Field, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC116133  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  JEPS95933  Heliotropium europaeum Lowell Ahart 1999-8-13 8163 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA722688  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC45698  Helminthotheca echioides Vernon Oswald 1983-6-28 783 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Along the edge of ponds in the refuge. Comment
  UCD132993  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte ca. 50 feet east of Hwy 99 ca. 4 miles north of East Biggs Road; at a pumping station just west of the Thermalito Afterbay levee. 32 Comment
  SEINET10759135  Hemizonia fasciculata Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7030 A Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  SEINET10475211  Hemizonia fitchii Mary Susan Taylor 1975-10-4 Taylor 950 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
  SD3460  Heracleum maximum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  CDA14228  Herniaria hirsuta subsp. cinerea B. Villegas, L. Bezark, H. Riley 1998-5-14 s.n. Butte Oroville Wildlife Area, Thermalito Afterbay, B2 Duck Dam, near Hwy 162 and Wilbur Rd. Comment
  JEPS123882  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-5-5 20145 Butte Oroville Wildlife Area, about 3/4 mile south of the Headquarters, about 3/4 mile south of Thermalito. Comment
  SEINET11842157  Hesperevax caulescens Unknown 1979-1 17 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Road 56 Comment
  CHSC41914  Hesperolinon micranthum Lowell Ahart 1983-8-16 4286 Butte Along the edge of Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  CDA2653  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. 0 Comment
  UC1925781  Heteranthera rotundifolia unknown 1983-8-16 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
  CHSC34816  Heterocodon rariflorum M. S. Taylor 1980-4-27 2548 Butte Ca 1 mi s of Nimshew. ca. 1/4 mi e of Nimshew Rd. 609 Comment
  SEINET10460697  Heterocodon rariflorum Taylor 1978-7-21 Taylor 1828 Butte On south side of Orovile-Quincy Highway along creek in meadow, about 14 miles north of Lake Madrone 1463 Comment
  SEINET10460748  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2718 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  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
  JEPS115711  Heteromeles arbutifolia Lowell Ahart 2009-6-3 15836 Butte 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 Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC310907  Heterotheca villosa Peter H. Raven 1954-4-17 6613 Butte Along Feather River, Oroville Comment
  CHSC29785  Heuchera micrantha var. erubescens M. S. Taylor 1982-5-27 2685 Butte On Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CAS-BOT-BC420460  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 4019 Butte 5 1/2 miles N of town of Feather Falls 600 Comment
  SD5139  Hieracium albiflorum E. B. Copeland 1930-7-16 Butte Jonesville. 1600 Comment
  CHSC51353  Hieracium scouleri var. scouleri Vernon Oswald 1990-7-10 4358 Butte Feather Falls Trail between California Nutmeg Spring and Fall River, ca. 4 mi north of the town of Feather Falls. 603 Comment
  JEPS120024  Hirschfeldia incana Lowell Ahart 2012-10-28 18533 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  POM27988  Hoita macrostachya C. C. Bruce 1897-06 1980 Butte Little Chico. Comment
  CDA42902  Holcus lanatus L. Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. Comment
  CHSC34790  Holcus lanatus M. S. Taylor 1978-6-24 1662 Butte Meadow, on n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along 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
  JEPS119957  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  SEINET10483353  Holodiscus boursieri Lowell Ahart 1985-6-16 Ahart 5044 Butte About 1/4 mile south-west of the Forbestown Resevoir, about 4 miles north-east of Forbestown. Comment
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 Comment
  CAS-BOT-BC150113  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CAS-BOT-BC150116  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CAS-BOT-BC311883  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte Mt. Ida Ranch, 10 miles east of Oroville Comment
  CHSC33855  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 850 Butte Meadow. Chico Meadows, 1.1 mi N of the jct of Scout Rd and the Humboldt Rd along the former. 1341 Comment
  CHSC61539  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1993-5-15 6942 Butte Along the Cherokee Canal, near bridge of Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC285087  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2120 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC284886  Hordeum murinum subsp. leporinum Lowell Ahart 1977-6-2 1509 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31385  Hordeum murinum subsp. leporinum J. D. Jokerst 1979-4-13 1193 Butte Top of North Table Mt., ca 200 meters N of the intersection of Cherokee Rd and the E edge of the mountain. 396 Comment
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 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
  CHSC2155  Hordeum vulgare H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. of Chico. 60 Comment
  CHSC42332  Horkelia californica subsp. dissita Lowell Ahart 1983-6-21 4101 Butte Along a seep at the edge of Bloomer Hill Road, ca 3 mi nw of Oroville-Quincy Hwy, ca 16 mi ne of Oroville. 700 Comment
  SEINET10970306  Horkelia fusca subsp. parviflora Mary Susan Taylor 1982-6-24 Taylor 4742 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CHSC86587  Horkelia tridentata subsp. tridentata L. P. Janeway; John Hunt 2003-6-13 7827 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 280 m east of the north end of Enter-prise Bridge. 280 Comment
  CAS-BOT-BC536250  Horkelia tridentata var. tridentata Lowell Ahart 1985-5-15 5001 Butte 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CAS-BOT-BC536264  Horkelia tridentata var. tridentata Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC60978  Hosackia oblongifolia Lowell Ahart 1993-6-26 7009 Butte On the north side of the dirt road, about 1/4 mile west of Lost Creek Reservoir. Meadow. 1036 Comment
  CHSC113419  Hosackia oblongifolia var. oblongifolia 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
  JEPS118655  Hydrocotyle sibthorpioides L. P. Janeway 2010-6-9 9994 Butte Sacramento Valley. Chico; southeast corner of Citrus Avenue and Mansion Avenue, area between sidewalk and curb. Chico 7.5' quad. Comment
  UC176927  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mt. Olive Ranch n. of Oroville; Table Mt. Olive Ranch Comment
  CHSC11965  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 Butte Jonesville. 1550 Comment
  CHSC94999  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 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
  CHSC76281  Hypericum mutilum Lowell Ahart 1999-9-21 8263 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
  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
  CHSC741  Hypericum perforatum H. Reid 1949-6-1 Butte Paradise. 548 Comment
  CAS-BOT-BC401332  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CHSC6004  Ilex M. MacArthur 1968-6-19 248 Butte Main entrance to Auditorium, Chico State College. 60 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
  CAS-BOT-BC133550  Iris hartwegii John Thomas Howell 1962-6-16 37557 Butte Magalia 731 Comment
  CAS-BOT-BC133564  Iris hartwegii Mrs. C. C. Bruce 1898-5-1 2408 Butte Doe Mill Comment
  RSA136349  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20689 Butte Just south of Paradise on road to Oroville 549 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
  CHSC116977  Iris macrosiphon Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC24916  Iris macrosiphon M. B. Simpson 1976-4-4 14 Butte Ca. 5 yds e of Cohasset Hwy, ca. 7 mi n of Chico. 121 Comment
  JEPS120115  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC36106  Iris tenuissima C. W. Dawson 1978-3-22 3 Butte In Paradise, at intersection of Stearns Rd. and Pentz Magalia Highway. 457 Comment
  CHSC30366  Isoetes nuttallii J. D. Jokerst 1979-3-20 1149 Butte Top of North Table Mt., ca. 0.5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  CAS-BOT-BC61877  Isoetes nuttallii Lowell Ahart 1975-6-20 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut 38 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
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC107601  Jensia rammii Lowell Ahart 2011-7-9 17569 Butte On the west edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC93648  Juglans californica var. hindsii Paul Kirk; Joe Silveira 2001-5-25 2 Butte Rancho Llano Seco, 1.8 km WSW of ranch house, just off the ranch road south of 'The Lagoon' around Ryan Island. 30 Comment
  RSA755422  Juglans californica var. hindsii L. Ahart 2009-8-3 16252 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  UC1950053  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  RSA134790  Juglans hindsii Percy C. Everett, E. K. Balls 1959-10-20 23906 Butte Henshaw Ave., Chico. 59 Comment
  SEINET10971326  Juncus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4204 a Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  SD135659  Juncus acuminatus Lowell Ahart 1980-8-18 2586 Butte Peter Ahart Ranch, Honcut. Foothill woodland. 49 Comment
  JEPS115037  Juncus articulatus Lowell Ahart 2007-10-31 14511 Butte On the north side of North Honcut Creek, east of the cable across the creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville 40 Comment
  CHSC6672  Juncus balticus Marilyn Lee 1968-4-19 102 Butte Along W. side of Cherokee Rd., ca. 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Comment
  CHSC44522  Juncus balticus subsp. ater Lowell Ahart 1988-6-23 6070 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
  SEINET7072712  Juncus bufonius A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  CHSC94621  Juncus bufonius var. bufonius Lowell Ahart 2006-9-11 13300 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
  CHSC96890  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14082 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  CHSC96891  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14082 A Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  CHSC47535  Juncus bufonius var. congestus Lowell Ahart 1974-6-23 494 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC42137  Juncus bufonius var. occidentalis Lowell Ahart 1984-7-19 4733 Butte Along the edge of the dirt road, there is a seep along the road gutter in this area, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  CHSC44245  Juncus capillaris V. Oswald; L. Ahart 1988-7-13 3574 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  CHSC27059  Juncus capitatus Lowell Ahart 1978-5-1 1679 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC50382  Juncus diffusissimus Vernon Oswald 1990-6-2 4280 Butte Oroville Wildlife Area on the northwest side of the Feather River, just upstream from the outlet of Thermalito Afterbay. 33 Comment
  SEINET10938193  Juncus effusus var. pacificus Mary Susan Taylor 1977-8-16 Taylor 1449 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET11787692  Juncus ensifolius J. D. Jokerst, Schlising, R. A. 1982-1 1650 Butte W edge of Skyway 1.1 mi S of Innskip 1433 Comment
  CHSC28654  Juncus exiguus J. D. Jokerst; M. S. Taylor 1979-10-13 392 Butte Adjacent to creek. Intersecton of Jordan Hill Rd. (Ponderosa Way) and Griffth Gulch. 701 Comment
  CHSC41911  Juncus howellii Lowell Ahart 1983-8-16 4294 Butte Along the banks of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS127087  Juncus kelloggii Lowell Ahart 2016-4-15 20750 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  HSC100752  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Small spring on S side of road and wet meadow on N side, S side of a good forest road, 0.5 mi. N of Lost Creek Reservoir Dam, and 4.5 (air) mi. N of Clipper Mills. 1267 Comment
  RSA795245  Juncus laccatus L. Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 air miles northeast of Clipper Mills. 1134 Comment
  UC1438370  Juncus leiospermus Lowell Ahart 1978-4-21 1661 Butte Peter Ahart Ranch Honcut 50 Comment
  CAS-BOT-BC123263  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC113239  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 350 Comment
  JEPS104260  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS122163  Juncus nevadensis var. nevadensis Lowell Ahart 2014-8-13 19709 Butte About 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC105686  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  JEPS118343  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-northing Creek, about 150 yards north of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  POM110898  Juncus oxymeris C. C. Bruce, J. Bruce 1897-05 1884 Butte Chico ion Humboldt road Comment
  CHSC28660  Juncus parryi J. D. Jokerst 1979-7-21 301 Butte Summit and sides of Humboldt Peak. 2133 Comment
  CDA34630  Juncus tenuis L. Ahart 2009-6-19 15918 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC32375  Juncus tenuis J. D. Jokerst 1980-6-14 837 Butte Bald Rock, on its N slopes. 914 Comment
  SEINET10472354  Juncus tenuis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4103 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC30434  Juncus triformis L. Ahart 1979-7-20 2474 Butte Along Bean Creek Road, near the south side of Little Bald Rock, ca. 15 mi NE of Oroville. 1100 Comment
  CHSC96889  Juncus triformis Lowell Ahart 2007-6-12 14062 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 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
  CHSC109962  Juncus trilocularis P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25705 Butte 0.5 air miles NE of Little Bald Rock, NE of and below Bean Creek Road 0.6 road miles from bald Rock road, northern Sierra Nevada Highlands. 1005 Comment
  SD243238  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Northern Sierra Nevada Highlands: above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill. 829 Comment
  SBBG128190  Juncus usitatus L. Ahart 2009-7-4 15999 Butte side of a large shallow pond, on the W side of the gravel rd, ca. 100 yards S of parking lot 3, Gray Lodge Waterfowl Management Area, ca. 6 mi (air) SW of Gridley 21 Comment
  CHSC57162  Juncus xiphioides L. P. Janeway 1987-6-27 2339 Butte Canyon of Little Kimshew Creek; along road 0.9 mi north of the Concow Road. 1508 Comment
  RSA293236  Keckiella breviflora subsp. glabrisepala D. C. Michener 1980-8-4 3777 Butte Northern Sierra Nevada. Feather River Canyon, 4.4 miles north of Pulga on CA 70. 500 Comment
  RSA754854  Keckiella breviflora subsp. glabrisepala L. Ahart 2009-4-26 15610 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC39977  Keckiella lemmonii L. Ahart; P. Ahart 1983-7-24 4209 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  NY790318  Keckiella lemmonii A. A. Heller 1902-5-6 5471 Butte Berry Canyon (near Clear Creek) Comment
  RSA4161  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  JEPS95757  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  SEINET9773735 Image available Kickxia elatine Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UC1562422  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte se side Forbestown Reservoir (near the Forbestown Generator, along se side of dirt road) 487 Comment
  UCR219110  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 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
  CDA35627  Kickxia elatine J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330073 Butte Chico; Rancho Llano Seco. 0 Comment
  SEINET10582525  Kickxia elatine Mary Susan Taylor 1978-9-8 Taylor 1895 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  UC480953  Kumlienia hystricula Mrs. R. M. Austin 1890-4 226 Butte Little Chico Canyon Comment
  CDA2619  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Road, Oroville. 0 Comment
  CHSC27237  Lagerstroemia indica P. Moyer 1971-9-25 3 Butte CSUC campus. W side Bus-Soc Sci. Bldg. 60 Comment
  CAS-BOT-BC341310  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  POM308519  Lagophylla glandulosa Henry J. Ramsey, Henry J. Ramsey 1939-10-16 3176 Butte Oroville Comment
  UC406896  Lagophylla glandulosa H. M. Hall 1914-8-1 9828 Butte near Bidwell's Bar ((Mt. Ida)); Foothills of Sierra Nevada Comment
  CHSC46211  Lagurus ovatus Pauleen Broyles 1985-5-14 943 Butte Town of Paradise. Overlooking w branch of North Fork Feather River, in yard of a private home at 5190 Country Club Dr. On e side of the house. 522 Comment
  CHSC109096  Lamium amplexicaule Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17857 Butte On the south side of the paved road, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  CHSC41773  Lamium amplexicaule Lowell Ahart 1986-11-7 5420 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC277  Lasthenia californica J. Turner 1930-3-25 Butte Chico Creek Canyon. 152 Comment
  CHSC90626  Lasthenia californica Jose Romero 1983-4-20 20 Butte Oroville Wildlife Area, junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC13845  Lasthenia fremontii P. Haberkern 1974-4-21 26 Butte In field off the Skyway, ca. 0.5 mi e of Notre Dame Blvd, e of Chico. 60 Comment
  CHSC65892  Lasthenia fremontii Vernon H. Oswald 1996-4-20 7393 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS107763  Lasthenia fremontii Lowell Ahart 2005-5-11 11806 Butte Margins of small vernal pool, S of small stream, open pasture field, ca. 1 mi S of Beatson Hollow, ca. 1 1/2 mi SW of poor dirt road off of Cherokee Rd, S part of N Table Mountain, ca. 7 mi (air) N of Oroville 280 Comment
  UCD80079  Lasthenia fremontii CNPS SN Foothill Team 2005-5-4 SNFN 0200 c Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  UCSC004639  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte T17N, R4E, southwest 1/4 Section 4, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 26 Comment
  CHSC45006  Lasthenia glaberrima Lowell Ahart 1979-5-25 1888 Butte On the edges of pond, west of the Western Pacific Railroad, about 2 air miles south of Palermo. 33 Comment
  UCSC004637  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte T17N, R4E, southwest 1/4 Section 4, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 26 Comment
  HSC32637  Lasthenia gracilis R. A. Vanbianchi 1974-4-20 241 Butte Table Mtn. 305 Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CDA34700  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 miles (air) northeast of Oroville. Comment
  CHSC98994  Lathyrus angulatus Lowell Ahart 2008-5-21 14770 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
  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
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  CHSC50323  Lathyrus brownii Vernon Oswald; Lowell Ahart 1990-5-29 4264 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CAS-BOT-BC213339  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  CAS-BOT-BC213341  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC213348  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-5-14 8670 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  CHSC860  Lathyrus nevadensis L. Nelson 1935-4-27 Butte Deer Creek Canyon. 914 Comment
  JEPS84919  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  UCD106434  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC30039  Lathyrus tingitanus L. Ahart 1980-5-17 2304 Butte Around the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  UC894089  Layia fremontii A. A. Heller 1914-4-14 11235 Butte 8 mi n Oroville Comment
  RSA256659  Layia fremontii Linda M. Barker 1974-4-20 146 Butte Skyway Road, 1 mile E of Hwy 99. 61 Comment
  CDA42926  Leersia oryzoides L. Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS118322  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 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
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  CHSC3354  Lepechinia calycina Robert L. Smith 1966-5-20 55 Butte Paradise, 5 miles SW of Postorrice. Comment
  CHSC37619  Lepechinia calycina T. B. Devine 1979-7-8 582 Butte Along Hwy. 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC750  Lepechinia calycina M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC89878  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC4120  Lepidium nitidum R. Carter 1966-4-2 324 Butte Found ca. 7 mi. E Oroville at 6120 Woodleaf St. Rt. 300 yds off Feathervale, behind house, in pasture. 243 Comment
  UCD115785  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte 8 miles north of Oroville. Comment
  SEINET11986394  Lepidium nitidum B. K. Madsen 1970-1 17 Butte along Wildwood Ave., ca 0.5 mi E of intersection of Wildwood Ave & Manzanita Ave, Upper Bidwell Park 85 Comment
  UCD115856  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC106883  Lepidium strictum Lowell Ahart 2011-5-1 17337 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
  CDA2225  Leptochloa dubia L. Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise Comment
  RSA796044  Leptochloa fusca subsp. fascicularis L. Ahart 2011-10-29 17731 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
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Jul 19 2018
  CHSC45450  Leptosiphon acicularis Lowell Ahart 1979-4-22 1834 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
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Jul 19 2018
  CHSC45451  Leptosiphon androsaceus Lowell Ahart 1979-4-3 1820 Butte On slope near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  CHSC41368  Leptosiphon filipes B. Castro 1982-4-21 26 Butte Vernal pool area, 0.3 mi w of jct with Hwy 99 on Broyles Rd, ca 10 mi nw of Chico. 60 Comment
  CHSC86861  Leptosiphon filipes L. P. Janeway; John Hunt 2003-5-21 7791 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  CHSC38375  Lessingia nana Vernon Oswald 1983-8-2 948 Butte Upper Bidwell Park, Chico, near Parking Area C, Horseshoe Lake. 100 Comment
  UC1287400  Lessingia nana Willard Spence 1962-7-24 729 Butte corner Broyles Road (n of Chico, Route 99E) Comment
  CHSC110236  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 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
  CHSC116146  Lessingia nemaclada Lowell Ahart 2015-10-26 20587 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 228 Comment
  CHSC31081  Lessingia nemaclada R. Banchero; D. Ikeda, J. Nelson 1979-9-29 43 Butte Bear Ranch Crk, 1.2 mi sw of crossing of Hwy 70 with Butte County line. 609 Comment
  CAS-BOT-BC56388  Leucothoe davisiae Lowell Ahart 1986-8-15 5388 Butte about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City 1493 Comment
  POM132236  Leucothoe davisiae Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10830261  Lewisia cantelovii Mary Susan Taylor 1980-9-27 Taylor 3342 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  UC2026869  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte On the south side of the paved park road, west of entrance from Woodland Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC130564  Lilium humboldtii Mrs. C. C. Bruce 1897-6-1 1856 Butte unspecified Comment
  CAS-BOT-BC509478  Lilium kelleyanum H. F. Copeland 1920-8-29 152 Butte Jonesville Woods 1219 Comment
  CHSC46225  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1059 Butte Ca 2.0 km s. of Inskip of w. side of Skyway. 1400 Comment
  CAS-BOT-BC133053  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CAS-BOT-BC133045  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  UCR188703  Limnanthes alba Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC3989  Limnanthes douglasii Kathy Sommarstrom 1967-4-15 22 Butte Found 1 mi east of hwy overpass to the left of hwy. 60 Comment
  RSA256669  Limnanthes douglasii David Johnson 1974-4-20 15 Butte One mile east of Hwy. 99 along Skyway Rd. Comment
  SEINET12183045  Limnanthes douglasii K. E. Warwick 1978-1 6 Butte ca 20 m N of Skyway (Rd.), .5 km e of intersection of Skyway and Notre Dame Blvd., Chico Comment
  CHSC2386  Limnanthes douglasii subsp. rosea R. Carter 1965-3-30 174 Butte Found in vernal pools on Wurlitzer Ranch NW of Chico, inside gate. 60 Comment
  CHSC67541  Limnanthes douglasii subsp. rosea James D. Jokerst; M. S. Taylor 1980-3-20 486 Butte 50 m NW of junction of Bruce Rd. and Skyway, SE side Chico. Comment
  JEPS43472  Limnanthes douglasii subsp. rosea Joan O. Danielson 1966-4-6 16 Butte Cherokee Rd 5 mi s Cherokee 609 Comment
  UC726867  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (below blue oak belt) Comment
  UCD116436  Limnanthes floccosa Jeff Dole 1988-3-26 s.n. Butte near junction of Bruce Road and Stilson Canyon Road. Comment
  CHSC55506  Limnanthes floccosa subsp. californica L. P. Janeway; Pat Kelly 1991-3-31 3867 Butte Between Hwy 32 and Dead Horse Slough, and from 600 to 1200 ft west of Bruce Road. 74 Comment
  CHSC67544  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3042 Butte N of Hwy. 149 and N of old Hwy. 149 alignment, ca. 1.6 mi NW of Hwy. 70, top of plat upland Nw and adjacent to Cottonwood Creek. Comment
  UC1397276  Limnanthes floccosa subsp. californica T. Niehaus 1965-3-28 371 Butte Table Mountains Comment
  CHSC32591  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1981-3-21 1257 Butte Initial slopes delineating the beginning of the foothills, ca. 0.5 mi N of Horseshoe Lake. Comment
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  SEINET10496778  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-16 Taylor 2490 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  JEPS115836  Linanthus bicolor Lowell Ahart 2009-4-22 15585 Butte Along the Guardians Trail, just south side of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC3959  Linanthus dichotomus M. Lee 1967-4-10 18 Butte Along roadside 2 1/2 mi. E. of Hwy 99E on Pentz Rd. Pentz. 136 Comment
  UC124911  Linanthus dichotomus Mrs. R. M. Austin May 1883 32 Butte Comment
  SEINET12319548  Linanthus filipes Unknown 1978-1 2 Butte 3 mi NE of Butte Creek bridge between Chico and Paradise Comment
  CHSC109566  Linum bienne L. P. Janeway 2012-6-27 10918 Butte Northern High Sierra Nevada. On top of Sunset Hill. Edge of old disturbance surrounding fire lookout, radio towers and outbuildings. 1011 Comment
  CHSC85158  Lipocarpha aristulata John Dittes 2003-10-8 843 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
  UC726095  Listera convallarioides A. A. Heller 1928-6-28 14661 Butte Butte Meadows Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  CDA14774  Lithocarpus densiflorus var. densiflorus G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3377 Butte 1.1 miles northeast of Mountain House. 1051 Comment
  RSA268942  Lithocarpus densiflorus var. densiflorus J. R. Reeder, Charlotte G. Reeder 1972-6-6 5656 Butte Ca. 4 miles N of Forest Ranch. 1067 Comment
  SEINET10477991  Lithocarpus densiflorus var. echinoides Mary Susan Taylor 1980-5-27 Taylor 2642 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  POM92061  Lithophragma bolanderi C. C. Bruce 1897-03 1842 Butte [No further location information] Comment
  CHSC43745  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1987-6-10 2985 Butte Forest Service road to Sunflower Flat joining Humbug Rd. in about the center of Section 22, s to the end of a spur road from the bottom center of Section 23, ca. 2.5 mi se of Butte Creek House. 1950 Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CAS-BOT-BC123106  Lithophragma trifoliatum C. C. (Mrs.) Bruce 1897-4-1 1844 Butte Foothills near Chico Comment
  CAS-BOT-BC428448  Lithophragma trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek east of Chico near the Honey Run grade bridge. Comment
  CHSC29287  Lithospermum californicum R. A. Schlising 1980-5-23 3597 Butte N of Lake Oroville State Rec. Area in Lassen Nat. Forest, 3.5 mi e junction Hwy 70 and Big Bend Road and from here, at community of Big Bend, 1.0 mi s; roadside. Comment
  CHSC60576  Lithospermum californicum Vernon H. Oswald; Lowell Ahart 1993-4-19 5277 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. North-facing slope on the S side of Rattlesnake Creek. 701 Comment
  CHSC46952  Logfia gallica Lowell Ahart 1978-5-15 1719 Butte Field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC342389  Logfia gallica A. A. Heller 1913-10-7 11148 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CHSC6633  Lolium M. MacArthur 1968-6-16 350 Butte 20 ft. SW of Big Chico Creek, just S of Esplanade Bridge, Chico State College campus. 60 Comment
  CDA2232  Lolium multiflorum T. C. Fuller 1962-5-17 8722 Butte Hwy 99 E to Vina, 14.5 miles northwest of Chico. 0 Comment
  CHSC38827  Lolium multiflorum Vernon Oswald 1983-2-2 58 Butte Upper Bidwell Park, Chico, along Yahi Trail on the flat above Diversion Dam. 121 Comment
  CHSC4426  Lolium multiflorum 1966-5-21 Butte Upper Bidwell Park, near Bare Hole, Chico. Comment
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC271206  Lolium temulentum Lowell Ahart 1980-5-10 2230 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA35635  Lolium temulentum J. R. Keck Jr. 1981-5-13 PDR# 330199 Butte Oroville. 0 Comment
  CHSC32594  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1265 Butte Open grassland S of the summit of Campbell Hills. Comment
  SFV2592  Lomatium dasycarpum subsp. tomentosum M. L. Vincent 1962-4-15 175 Butte At intersection of Pentz and new alternate Highway 40. 13 miles south of Paradise. Roadside. 245 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
  CHSC1966  Lomatium macrocarpum A. Goekler 1929-4-21 Butte Bidwell Park. 60 Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC31865  Lomatium utriculatum L. Ahart 1977-4-16 1307 Butte Along sides of North Honcut Creek; Peter Ahart Ranch, Honcut. 50 Comment
  CHSC197  Lonicera interrupta R. M. Staley 1952-7-3 Butte Butte Creek 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
  CHSC116219  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  CHSC58898  Lonicera involucrata var. involucrata Lowell Ahart 1992-7-26 6839 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  UC726261  Lotus denticulatus A. A. Heller 1940-5-13 15616 Butte 3 mi w Chico (along State Highway 32) Comment
  SEINET10973161  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-4 Taylor 3593 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 Comment
  SEINET3523638 Image available Lotus incanus A. A. Heller 1939-4-26 15387 Butte Along road leading down to the Feather River from Stirling Comment
  CDA31940  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  JEPS114722  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  UC866486  Lotus nevadensis var. nevadensis A. A. Heller 1917-7-26 12828 Butte Butte Meadows 1402 Comment
  UC726319  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  SEINET10452014  Lotus scoparius Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4147 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  JEPS114736  Lotus strigosus Lowell Ahart 2008-5-12 14734 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET12161432  Lotus subpinnatus D. G. Bendix 1978-1 12 Butte 50 m s of Lookout Point, 7kmW of Paradise 300 Comment
  RSA0118716  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  UCD149021  Ludwigia decurrens M. Stewart; C. Mutters 2011-9-13 137332 8 Butte south-southwest of Richvale. Comment
  CHSC102987  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC34692  Lupinus albicaulis var. shastensis M. S. Taylor 1981-5-14 3716 Butte N side of 23N00.2, 2.9 mi sw of Merrimac on Oroville-Quincy Hwy. 975 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
  CAS-BOT-BC201354  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49117 Butte Cherokee Comment
  CAS-BOT-BC196249  Lupinus albifrons var. eminens A. A. Heller 1914-4-29 s.n. Butte 12 miles north of Chico Comment
  UC865454  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte summit above Jonesville; summit above Jonesville 2133 Comment
  RSA304385  Lupinus bicolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-7 3306 Butte North Table Mountain ca 5 air miles north of Oroville. 396 Comment
  HSC23337  Lupinus bicolor D. C. Polen 1971-4-8 30 Butte 3.5 mi. E on Skyway from its junction with Hwy. 99E Chico. Comment
  CHSC108960  Lupinus bicolor var. pipersmithii Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17865 Butte On the south side of the paved road, east of the Deer Pen, between Tables 12 and 13, Lower Bidwell Park, Chico. 65 Comment
  JEPS119548  Lupinus bicolor var. pipersmithii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17865 Butte East of the Deer Pen, between Tables 12 & 13 Lower Bidwell Park, Chico. Comment
  CHSC101706  Lupinus bicolor var. tridentatus Lowell Ahart 2009-4-26 15619 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  SEINET10485235  Lupinus densiflorus var. lacteus Schultz 1975-5-6 Schultz 20 Butte Petals white, tinted or veined with rose or violet. Scattered populations alng Roadside in beatson's hollow area of table mt. 2.7 Mi. N of oroville. Soil a Deep loam in a woodland habitat. 320 Comment
  SEINET10483997  Lupinus grayi Mary Susan Taylor 1978-7-19 Taylor 1783 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  SEINET10489238  Lupinus latifolius subsp. longipes Lowell Ahart 1984-6-8 Ahart 4683 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca 6 mi NE of Ponderosa Dam, ca 4 mi SE of Feather Falls; Yellow Pine Forest. 1/3 of stems; on damp red soil; scattered in the area; flowers purplish. 550 Comment
  CHSC96219  Lupinus latifolius var. columbianus R. Fischer 2006-5-5 980 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on wooded hillside, black oak overstory, ca. 0.25 miles east of Big Chico Creek on the north side of 10 Mile House Road. 304 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  UC1129656  Lupinus nanus J. E. Sowder 1933-5-26 77 Butte 1/4 mi nw Yankee Hill; Chico Quad., nw of Yankee Hill Comment
  UCD108986  Lupinus nanus A. A. Heller 1913-3-9 10682 Butte hills two miles north of Oroville. 91 Comment
  UCR237310  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18762 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  RSA638251  Lupinus nanus subsp. nanus Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8117 Butte Table Mountain. Comment
  JEPS115828  Lupinus nanus var. vallicola Lowell Ahart 2009-4-26 15618 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  JEPS120590  Lupinus nanus var. vallicola Lowell Ahart 2013-11-18 19283 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS87401  Lupinus pachylobus Vernon H. Oswald and Lowell Ahart 1993-3-24 5243 Butte e side Dry Creek Canyon (n of the historical site of Pentz, on the e side of a secondary drainage entering Dry Creek 2 mi n Pentz Rd. Area burned during previous summer); e side of Dry Creek Canyon n of historical site of Pentz 262 Comment
  POM193372  Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  POM276488  Lupinus polyphyllus subsp. superbus Lyman D. Benson 3958 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  JEPS117287  Lupinus polyphyllus var. burkei Lowell Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CDA27576  Lupinus stiversii L. L. Heinrichs 1963-5-21 Butte Olive Highway, 5 miles from Oroville. 0 Comment
  POM23591  Lupinus subvexus var. transmontanus C. C. Bruce s.n. Butte Butte Comment
  UC726747  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte along the highway to Hamilton City 6 mi w Chico; w of Chico Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  RSA32779  Lupinus vallicola subsp. vallicola A. A. Heller 1938-4-23 15046 Butte Along the Feather River Highway near the bridge over the river east of Oroville. Comment
  RSA712826  Luzula comosa L. Ahart 2006-4-28 12547 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  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
  CHSC43685  Lycopus americanus Vernon Oswald 1985-6-26 1864 Butte Oroville Wildlife Area on the e side of the outlet of Thermolito Afterbay. 42 Comment
  CHSC105263  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC60993  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC66078  Lythrum hyssopifolia Vernon H. Oswald 1996-5-23 7631 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  UC138250  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  RSA0016015  Lythrum salicaria L. P. Janeway 2006-7-19 8819 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  HSC95490  Lythrum salicaria L. Ahart 1997-6-29 7742 Butte S side of Wyman Ravine, on W side of Lone Tree Rd., ca. 6 mi. S of Oroville. 37 Comment
  UC1609282  Lythrum tribracteatum Lowell Ahart 1993-5-15 6938 Butte about 2 mi w of Biggs (on n side of Biggs Princeton Road); Biggs Princeton Road 30 Comment
  CAS-BOT-BC342717  Madia elegans Lewis S. Rose 1945-5-12 45020 Butte Richardson Springs 304 Comment
  CHSC62714  Madia elegans subsp. elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  CHSC35670  Madia elegans subsp. vernalis R. E. Preston 1982-4-22 262 Butte Ca. 0.3 mi e of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. (In dirt road). 335 Comment
  CAS-BOT-BC344308  Madia exigua L. P. Janeway 1995-6-19 4796 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge 1097 Comment
  CHSC32149  Madia exigua L. Ahart 1979-5-29 1904 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek; ca. 2.5 mi se of Paradise. 500 Comment
  SBBG127937  Madia glomerata L. Ahart 2010-9-21 17223 Butte open area along a poor dirt rd, ca. 1 mi (air) NE of Jones Meadow, ca. 2.5 mi (air) SE of Philbrook Reservoir 1899 Comment
  CAS-BOT-BC342962  Madia gracilis E. B. Copeland 1931-8-14 s.n. Butte Jonesville 1500 Comment
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SEINET10474829  Madia rammii Mary Susan Taylor 1976-5-3 Taylor 1102 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CHSC90838  Madia subspicata Lowell Ahart 2005-5-7 11788 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  SEINET4173697 Image available Madronella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  SEINET10536496  Mahonia dictyota Lowell Ahart 1983-4-14 Ahart 3935 Butte Ca. 3/4 mi w of Forbestown Reserv., ca. 3.4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC33945  Maianthemum racemosum M. S. Taylor 1981-5-21 3783 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Hwy 70. 1005 Comment
  CHSC40483  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  UC1609223  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  CDA14064  Malus sylvestris G. F. Hrusa, T. D. Wilfred 1997-5-1 13711 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC4055  Malva nicaeensis J. Wheeler 1967-5-20 25 Butte Sparse in a lot immediately west of 248 Serviss St., Durham. 47 Comment
  POM85083  Malva nicaeensis C. C. Bruce 1897-04 1919 Butte [name of locality illegible] Comment
  CHSC46834  Malva parviflora R. A. Schlising 1986-11-28 4510 Butte Gray Lodge Waterfowl Management Area. 18 Comment
  JEPS119502  Malva parviflora Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC26767  Marah fabacea var. agrestis P. Moyer 1972-3-2 91 Butte N end of L. S. Bridge, on CSUC campus. 60 Comment
  CHSC3467  Marah fabacea var. agrestis Roger Jaegel 1966-3-2 17 Butte 4 miles northeast of Chico. Along the bank of Big Chico Crk. Upper Bidwell Park. Comment
  CHSC42547  Marah watsonii Lowell Ahart 1987-5-12 5648 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
  CHSC46486  Marah watsonii Lowell Ahart 1980-4-7 2077 Butte South of the bridge across Rocky Honcut Creek, along Swedes Flat Road, north of Bangor. 292 Comment
  CHSC60580  Marah watsonii Vernon H. Oswald; Lowell Ahart 1993-4-21 5287 Butte Middle of Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC21052  Marsilea vestita M. S. Taylor 1975-10-4 958 Butte On e edge of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC2825  Matricaria discoidea David Prall 1965-4-25 Butte Humbug Road 0.3 miles west of junction of Honey Run Rd. (covered bridge). Roadside. 198 Comment
  POM173664  Meconella californica H. F. Copeland 1927-4-3 997 Butte Canyon of Butte Creek Comment
  UCD95461  Meconella californica M. C. Earley 1982-4-16 5 Butte 11 miles ESE of Chico. 112 Comment
  JEPS115540  Medicago arabica Lowell Ahart 2009-5-15 15712 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UCD106765  Medicago arabica P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  SEINET12155167  Medicago hispida P. L. Ricker 1912-1 3949 Butte Chico Comment
  CHSC109176  Medicago lupulina Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SD122542  Medicago lupulina Lowell Ahart, Peter Ahart 1984-6-10 4693 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC45287  Medicago minima Vernon Oswald 1987-4-6 2309 Butte Butte Creek Reserve on the n side of Butte Creek n of the Skyway, ca. 200 ft w of the single transmission line. 80 Comment
  UCD80307  Medicago polymorpha CNPS SN Foothill Team 2005-5-4 SNNR 0016 Butte City of Chico, Upper Bidwell Park, in the flood zone of Chico Creek. 81 Comment
  POM348140  Medicago polymorpha P. L. Ricker 1912-5-18 3953 Butte Chico. Comment
  RSA590208  Medicago polymorpha Michael A. Vincent, Robert Rhode, Karl Vincent 1996-3-29 7246 Butte W of N. Table Mountain, along Cottonwood Rd., 1.5 mi. W. of jct. Table Mt. Rd., W of CA Rt. 70. NW of Oroville. Comment
  SEINET10904036  Medicago polymorpha var. polymorpha Mary Susan Taylor 1981-5-1 Taylor 3587 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  JEPS115313  Medicago praecox Lowell Ahart 2009-4-22 15575 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC271131  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi S of Lomo, 2.3 mi S of ford over Cedar Creek 1219 Comment
  CHSC82472  Melica aristata Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9745 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  RSA712795  Melica aristata L. P. Janeway 2005-6-26 8440 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CAS-BOT-BC269375  Melica californica Lowell Ahart 1985-5-15 4974 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CAS-BOT-BC269385  Melica californica L. P. Janeway 1995-6-19 4797 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge 1097 Comment
  CAS-BOT-BC269390  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia 731 Comment
  CHSC41166  Melica harfordii L. P. Janeway; Gary Benson 1985-7-1 Butte Plumas N.F. ECOS plot 11-123. Slope on west side of Middle Fork Feather River near Milsap Bar. 633 Comment
  JEPS106168  Melica harfordii Lowell Ahart 2004-6-22 11112 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  CHSC60210  Melica torreyana T. B. Devine 1980-4-10 678 Butte Beside Humbug Rd., ca. 1/4 mi. above covered bridge. Roadside. Comment
  RSA31168  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  SEINET13710343  Melissa officinalis Lowell William Ahart, Lowell William Ahart 2002-1 9931 Butte 2 Mi. N Town of Feather Falls (39 Deg 36'44.9'N, 121 Deg 15'59.8"W) 2433 Ft. 742 Comment
  JEPS119916  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCD117215  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville, along Butte Creek. Comment
  CHSC52135  Micranthes bryophora L. P. Janeway; R. A. Schlising 1988-7-22 3060 Butte Shaded flat in woods on the SW slope of upper Coon Hollow. 1859 Comment
  CHSC30377  Micranthes californica J. D. Jokerst 1979-3-20 1154 Butte Top of North Table Mt., W edge at the water fall of the S branch of Coal Cr. 365 Comment
  CHSC87427  Micranthes fallax R. D. Fischer 2004-3-22 117 Butte Upper Bidwell Park in Chico, on the lower east-side. Collected along road leading to old pistol range. 76 Comment
  CHSC39607  Micranthes integrifolia Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut. 35 Comment
  CHSC87439  Micranthes integrifolia R. D. Fischer 2004-3-31 103 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  POM225969  Micropus californicus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  POM57377  Micropus californicus A. A. Heller, H. E. Brown 1902-5-6 5460 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  RSA126767  Micropus californicus var. californicus C. G. Albertus 1933-6-6 24 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  POM33622A  Microseris C. C. Bruce 1897-05 1993 Butte [No locality information provided] Comment
  CAS-BOT-BC348696  Microseris acuminata Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC26734  Microseris acuminata M. S. Taylor; M. Hayes 1978-4-14 1562 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CAS-BOT-BC348693  Microseris acuminata K. L. Chambers 1952-5-16 405 Butte Hwy. 24, 7.8 mi. s. of center of Oroville Comment
  SEINET10474314  Microseris douglasii Lowell Ahart 1985-4-29 Ahart 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10474315  Microseris lindleyi Lowell Ahart 1985-4-24 Ahart 4883 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC19946  Microsteris gracilis M. S. Taylor 1975-3-10 409 Butte On bluffs overlooking Butte Creek and Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC42967  Mimetanthe pilosa Lowell Ahart 1987-7-3 5770 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
  SEINET10570407  Mimulus Mary Susan Taylor 1978-7-21 Taylor 1825 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
  UCD22551  Mimulus aurantiacus James I. Mallory 1970-5-26 374 Butte T22N R3E Sect. 3 426 Comment
  UCD122722  Mimulus glaucescens B. L. Wiley 1975-4-18 15 Butte from junction of Hwys. 70 and 149, 11.8 mi e and 6.1 mi up Cherokee Rd. from junction of Table Mtn. Blvd. and Cherokee Rd. ca. 50 yds. w. 487 Comment
  CHSC118860  Mimulus guttatus Christopher T. Ivey 2017-5-27 392 Butte Honeyrun Road, about 6.5 km NE of bridge crossing Butte Creek, S side of road. 453 Comment
  SEINET8256543  Mimulus guttatus A. A. Heller 1914-3-18 11200 Butte low hills 8 miles north of Oroville. Comment
  HSC32396  Mimulus kelloggii R. A. Vanbianchi 1974-4-20 233 Butte Table Mtn. 305 Comment
  JEPS17584  Mimulus layneae Rimo Bacigalupi with G. Thomas Robbins 1955-7-18 5364 Butte 0.3 mi below and w Lomo Inn (at junction of Humboldt Road to Butte Meadows, along State Highway No. 32) 1036 Comment
  UC1609049  Mimulus layneae Lowell Ahart 1993-7-29 7116 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  CHSC38705  Mimulus moschatus Vernon Oswald 1983-5-27 565 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC44793  Mimulus moschatus R. Banchero 1980-6-19 254 Butte Along Concow Rd 1.3 mi N of its jct with Hwy 70, 0.3 mi N of the town of Concow. 518 Comment
  POM193346  Mimulus primuloides var. pilosellus E. B. Copeland 1930-7-15 460 -A Butte Jonesville. 1500 Comment
  JEPS14948  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA535418  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte NW of De Sabla. 0,25 mi N of Doe Mill Road along Garland Road. 600 Comment
  UCD122930  Mimulus torreyi L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCSB64006  Minuartia californica Ahart, Lowell 1974-3-12 Butte Peter Ahart Ranch; about 1/2 miles north and 2 miles east of Honcut; about 12 miles south of Oroville 45 Comment
  CHSC38296  Minuartia douglasii Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. On a basaltic cap overlooking Chico Creek. 198 Comment
  SEINET11931594  Minuartia douglasii L. V. Ritter 1969-1 170 Butte 4.2 mi S of Cherokee, ca 100 yds W of Cherokee Rd., on Table Mt Comment
  CAS-BOT-BC433046  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CHSC37432  Moehringia macrophylla R. A. Schlising; S. Morey, J. Fuller 1982-5-23 4254 Butte N of Forest Ranch, off Hwy 32 near a serpentine outcrop above West Branch Butte Creek. 868 Comment
  CHSC49835  Moenchia erecta Vernon Oswald; Lowell Ahart 1990-4-9 4159 Butte Oak Grove Cemetery ca. 0.6 mi se of Hurlton, ca. 10 mi w of Forbestown. Several hundred feet east of the cemetery. 542 Comment
  JEPS122251  Mollugo verticillata Lowell Ahart 2014-9-23 19870 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
  CAS-BOT-BC435073  Mollugo verticillata Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  RSA32319  Mollugo verticillata Willis H. Wheeler 1945-10-11 s.n. Butte US Plant Introduction Garden. Chico. Comment
  CHSC60608  Monardella breweri subsp. lanceolata L. P. Janeway 1992-6-13 4232 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. 487 Comment
  UC196297  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  SFV3186  Monardella glauca M. L. Vincent 1960-9-7 100 Butte Sierra Nevada Old Stage Road near Stearn Road, 3 miles south of Paradise. 530 Comment
  CHSC67987  Monardella odoratissima James D. Jokerst 1989-7-3 3125 Butte Hwy. 70 4.05 mi E of Concow turnoff. Comment
  UC1594567  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte about 1/2 mi north-west of Lotts Lake (about 1 mi east of the Carr Mine) 1828 Comment
  CAS-BOT-BC215691  Monardella sheltonii A. A. Heller 1914-7-23 11604 Butte Edge of the forest about Chico Meadows 1219 Comment
  CAS-BOT-BC220450  Monardella sheltonii Clarence R. Quick 1964-7-9 64 -59 Butte North of Jarbo Gap Comment
  CHSC2422  Monardella sheltonii R. Carter 1965-6-15 227 Butte Found e of Paradise on Honey Run Rd., 2.4 mi. from intersection with Skyway on S side of road. 472 Comment
  CHSC79520  Monardella sheltonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13975 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CAS-BOT-BC220448  Monardella sheltonii John Thomas Howell 1973-7-9 49691 Butte NE. of Pulga Bridge, Feather River highway 417 Comment
  CDA40785  Monardella sheltonii T. C. Fuller 1958-7-7 1910 Butte 0.1 mile north of Feather River Bridge, Highway 40 Alt., 1 mile north of Pulga. 0 Comment
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  POM101957  Montia clara C. C. Bruce 1897-06 2013 Butte Fields Comment
  CHSC56080  Montia fontana subsp. amporitana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. In the lawn. 70 Comment
  CHSC38632  Montia fontana subsp. chondrosperma Vernon Oswald 1983-3-13 164 .5 Butte Upper Bidwell Park, Chico, ca. 400 ft s and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC56081  Montia fontana subsp. chondrosperma L. P. Janeway 1988-6-25 2871 Butte In Coon Creek and near Bull Hill Road 1.0 mi from Skyway. 1554 Comment
  CAS-BOT-BC73671  Morus alba John Thomas Howell 1961-9-22 36738 Butte Sierra Nevada - bank of Feather River, Oroville. 53 Comment
  JEPS119542  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte East of the Deer Pen, south of Table 11, Lower Bidwell Park, Chico. Comment
  JEPS110334  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CAS-BOT-BC263356  Muhlenbergia asperifolia Lowell Ahart 1987-5-27 5708 Butte On a sand bar along the North Fork of teh Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC42438  Muhlenbergia asperifolia Lowell Ahart 1987-5-27 5708 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC113395  Muhlenbergia filiformis Lowell Ahart 2014-7-2 19549 Butte Depression on north side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  SEINET4343727 Image available Muhlenbergia filiformis Unknown 2009-11-19 16546 Butte Meadow in Foothill Woodland; About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Par about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC31725  Muhlenbergia rigens L. Ahart 1974-9-30 638 Butte On banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC97371  Myosotis discolor Paul Maslin 2006-4-15 41 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  SEINET10536209  Myosurus minimus Mary Susan Taylor 1975-4-18 Taylor 483 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  SEINET10899320  Myosurus minimus var. filiformis Mary Susan Taylor 1980-3-28 Taylor 2398 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC43252  Myriophyllum spicatum Lowell Ahart 1987-9-4 5875 Butte In a deep drain ditch, along the Biggs Princeton Highway, under P. G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  JEPS102315  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte about 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, W side of North Honcut Creek) 38 Comment
  UCD150363  Myriophyllum verticillatum Harry George 1967-8-30 s.n. Butte Nelson Road West. Comment
  CHSC3169  Narcissus pseudonarcissus Dona Kingsford 1966-3-12 Butte Yard at 528 W. 3rd. Street, Chico. Comment
  JEPS105913  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City 1689 Comment
  CHSC6749  Nassella pulchra V. Hagaman 1968-4-19 476 Butte Cherokee Village, ca 200 yards E. of cemetary. Comment
  CHSC109730  Navarretia heterandra B. Castro 2006-5-25 1534 Butte Sacramento Valley/S. Cascade Range Foothill edge. Ca 7 air mi SE of Chico, ca 1.6 air mi NE of Hwy 99, in lower end of Hamlin Canyon. 94 Comment
  SEINET3450752  Navarretia heterandra Unknown 2003-6-18 10290 Butte Oroville, Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  CHSC29704  Navarretia intertexta J. D. Jokerst 1980-5-28 791 Butte In the bottom of vernal pools. Top of North Table Mt., S of Cherokee Rd. 403 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  UCD48502  Navarretia leucocephala W. R. Powell 1968-4-23 1472 Butte 2 miles south-southeast of Oroville, Butte County, California. 71 Comment
  RSA256643  Navarretia leucocephala subsp. leucocephala Kitsy Kelly 1974-4-20 18 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  SEINET10496832  Navarretia propinqua Mary Susan Taylor 1978-9-9 Taylor 1917 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC12747  Navarretia pubescens L. V. Ritter 1969-5-5 262 Butte Ca 200 yds. w of Horseshoe Lake, Bidwell Park, 50 yds. n of the Park Rd. Comment
  RSA717288  Navarretia pubescens L. Ahart 2005-5-28 11819 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC33128  Navarretia subuligera J. D. Jokerst 1981-5-11 1310 A Butte Top of Doe Mill Ridge. 457 Comment
  CHSC36718  Navarretia tagetina D. H. Ikeda 1980-5-11 359 Butte At Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  JEPS107884  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  SEINET10902898  Navarretia tagetina Mary Susan Taylor 1978-5-7 Taylor 1597 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  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
  CHSC101268  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  POM65257  Nemophila heterophylla A. A. Heller, H. E. Brown 1902-5-9 11606 Butte Berry Canyon (Near Clear Creek). Comment
  POM65379  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  RSA32941  Nemophila heterophylla A. A. Heller 1937-5-31 s.n. Butte Yankee Hill Comment
  CHSC39092  Nemophila maculata R. A. Schlising 1980-4-7 3560 Butte N of Rackerby in s part of county; Swedes Flat Road, 0.2 mile e of Hurleton-Swedes Flat Road. Comment
  CHSC4086  Nemophila menziesii Kathy Sommarstrom 1967-4-12 21 Butte Found on left hand side of Honey Run Rd on South end of bridge next to covered bridge. 76 Comment
  CHSC113103  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CDA5774  Nicotiana acuminata var. multiflora L. Ahart, Vernon Oswald 1999-8-13 8135 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SEINET260328  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Boat launch area off the Oroville Quincy highway near Canyon Creek about 12 mi NE of Oroville 270 Comment
  SBBG25316  Notholithocarpus densiflorus var. densiflorus F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  UCD110233  Notholithocarpus densiflorus var. echinoides Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CHSC26644  Nymphaea odorata M. S. Taylor 1977-9-10 1517 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  POM202705  Odontostomum hartwegii J. H. Morrison 1932-04 s.n. Butte Durham Comment
  CHSC62902  Oemleria cerasiformis Vernon H. Oswald 1994-3-30 6034 Butte In Beaston Hollow on North Table Mtn., along a jeep road 0.7 mi W of Cherokee Rd. In area bordering Campbell Creek. 304 Comment
  JEPS119512  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  CHSC47037  Oenothera elata subsp. hirsutissima R. A. Schlising 1985-10-6 4480 Butte At Sacramento River, W of Chico, N of Chico Landing site. Along E edge of river. 36 Comment
  CHSC104011  Olea europaea Lowell Ahart 2010-6-1 16750 Butte On the north side of the Guardians Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
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Mar 18 2012
  SEINET12164650  Onobrychis viciifolia M. S. Taylor 1981-1 3799 Butte T23N R5E sw1/4Sw1/4 Sec 29. Pulga Quad. N of Flea Valley Crk drainage + Pulga, ca5airmiE of Magalia 1067 Comment
  CHSC41252  Oreostemma alpigenum var. andersonii S. C. Morey 1983-7-21 472 Butte Cherry Hill Meadow. On N side of Humboldt Ridge, ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CAS-BOT-BC499850  Orobanche fasciculata H. F. Copeland 1931-6-10 1557 Butte Jonesville, ridge beween Willow and Colby Creeks 1676 Comment
  CAS-BOT-BC500246  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SBBG28970  Orthilia secunda E. B. Copeland 1930-8-7 Butte Jonesville 1500 Comment
  SEINET10832401  Orthocarpus attenuatus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5386 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  RSA715718  Orthocarpus erianthus L. P. Janeway 2005-3-1 8332 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  POM15663  Orthocarpus erianthus E. B. Copeland 1902-4-10 3036 Butte Chico. Comment
  SEINET10549669  Orthocarpus erianthus Mary Susan Taylor 1974-3-26 Taylor 94 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  CAS-BOT-BC6995  Orthocarpus lacerus Amos Arthur Heller; H. E. Brown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET6330764 Image available Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station Comment
  CDA1627  Ottelia alismoides G. D. Barbe, T. C. Fuller 1977-9-2 2334 Butte Drainage canal west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. 0 Comment
  POM86786  Oxalis albicans subsp. pilosa C. C. Bruce 1897-04 1852 Butte Butte Creek. Comment
  CHSC4056  Oxalis corniculata J. Wheeler 1967-5-20 29 Butte In lawn at 248 Serviss St. Durham. Comment
  CHSC84127  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area, about 3/5 of a mile west of Pacific Heights Road, about 5 1/2 miles (air) southwest of Oroville. 39 Comment
  CHSC3541  Oxalis pes-caprae John Francis 1966-3-19 69 Butte On hillside S. of covered bridge, Honey Run. Comment
  CHSC42643  Oxypolis occidentalis Vernon Oswald 1985-8-28 1931 Butte Ca. 0.2 mi w of Humboldt Rd. at the bridge over Butte Creek s of Cherry Hill. 1414 Comment
  HSC73009  Oxypolis occidentalis M. S. Taylor, L. Ahart 1981-8-15 4193 Butte N side of Coon Hollow Rd (26N74), 1.2 mi. E of its junction with Humbug Rd., 12 mi. NE of Stirling City 1677 Comment
  JEPS34386  Packera eurycephala var. lewisrosei Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8862 Butte 0.75 mi s Pulga (above side road off U.S. Hwy 40, in canyon of the N Fk Feather River, at n base of grade over Jarbo Gap, and just before bridge across Feather River); North Fork of Feather River, Jarbo Gap 426 Comment
  CHSC34791  Panicum acuminatum M. S. Taylor 1978-7-21 1838 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone. 997 Comment
  JEPS120150  Panicum capillare Lowell Ahart 2012-10-20 18515 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  JEPS120936  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  UC925410  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (along U.S. Highway #99E, in hills about Chico); U.S. Highway #99E 60 Comment
  CDA2128  Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. 0 Comment
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC32589  Pectocarya pusilla J. D. Jokerst; Jeri Donovan 1981-3-21 1259 Butte Ca 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico, in Bidwell Park). Where foothills begin their initial rise. Comment
  CHSC51927  Pedicularis attollens L. P. Janeway 1988-7-29 3123 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  POM183165  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville. 1524 Comment
  CHSC3535  Pedicularis densiflora John Francis 1966-4-6 83 Butte 0.3 mi from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  UC399518  Pellaea andromedifolia Mrs. R. M. Austin 1896-1 199 Butte Iron Canyon Comment
  CAS-BOT-BC71202  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  SEINET10529789  Pellaea andromedifolia Mary Susan Taylor Taylor 988 Butte Bidwell Park, Chico. Comment
  CHSC28629  Pellaea mucronata M. S. Taylor 1979-3-19 1935 Butte Ca. 1 1/2 mi e of Pulga bridge on Hwy 70 over Feather River, ca. 25 mi n of Oroville. 487 Comment
  CHSC33896  Pellaea mucronata M. S. Taylor 1981-5-15 3733 Butte N side of Feather River Hwy 70, at Plumas NF boundary, ca. 2 mi ne of Jarbo Gap. 609 Comment
  UC382578  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1896 221 Butte Iron Canyon Comment
  UC406903  Penstemon azureus var. angustissimus David D. Keck 1928-6-16 451 Butte 1.5 mi s Berry Creek Inn; Sierra Nevada, s of Berry Creek Inn 609 Comment
  RSA780086  Penstemon breviflorus subsp. breviflorus C. C. Bruce 1897-06 2010 Butte Big Chico Comment
  CHSC50847  Penstemon heterodoxus var. shastensis Vernon Oswald 1990-7-23 4378 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. Southeast portion of the preserve. 1780 Comment
  SEINET10548027  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1982-6-24 Taylor 4729 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CHSC1870  Penstemon laetus var. leptosepalus 1954-5-30 Butte Flea valley, Concow road, near Stirling. 762 Comment
  JEPS6628  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte along the Feather River Highway 25 mi from Oroville; along the Feather River Highway 25 mi from Oroville Comment
  UC887104  Penstemon laetus var. leptosepalus Lewis S. Rose 1939-6-7 39236 Butte 3 mi s Pulga (S Fork Feather River); , s of Pulga 609 Comment
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Jul 24 2008
  RSA712804  Penstemon neotericus L. P. Janeway, B. Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek, 0.6 km ENE of its confluence with Camp Creek. 1085 Comment
  RSA0094695  Pentagramma triangularis C. C. Bruce 1897-06 1861 Butte [No location data on label] 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
  CHSC106574  Pentagramma triangularis subsp. triangularis C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC40222  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1852 Butte Scotts John Rd., 0.9 mi n of Rd. 26N27, ca. 2.5 air miles ene of Jonesville. 1780 Comment
  POM82590  Perideridia bolanderi subsp. involucrata C. C. Bruce 1897-06 2047 Butte [no locality information provided] Comment
  CHSC96036  Perideridia kelloggii Samantha Mackey Hillaire 2006-7-7 1233 Butte Label reads: Lat: N 39.83137385 Long: W 121.64039099 at the North. Lat: N 39.80653888 Long: W 121.64281085 at the South. Comment
  CHSC40233  Perideridia lemmonii Vernon Oswald 1985-6-20 1850 Butte Scotts John Rd., 0.9 mi n of Rd. 26N27, ca. 2.5 air miles ene of Jonesville. 1780 Comment
  CHSC44363  Perideridia lemmonii Lowell Ahart 1988-6-29 6087 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  CHSC38742  Perideridia oregana Vernon Oswald 1983-6-9 657 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 182 Comment
  CHSC26742  Perideridia parishii subsp. latifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1467 Butte Along Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  UCD99344  Persicaria amphibia Collector unknown 1927-12-16 1406 Butte Biggs Rice Station. Comment
  CHSC43247  Persicaria hydropiper Lowell Ahart 1987-10-22 5921 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70. 76 Comment
  CHSC73980  Persicaria hydropiper B. Castro 1995-9-10 612 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  CAS-BOT-BC413701  Persicaria hydropiper John Thomas Howell 1959-9-20 34644 Butte Eastern outskirts of Oroville 60 Comment
  CHSC66898  Persicaria hydropiperoides Vernon H. Oswald 1996-10-22 8302 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CHSC34055  Persicaria lapathifolia L. Ahart; M. S. Taylor 1981-8-15 3041 Butte On drying bottom of north side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CDA42931  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. Comment
  CHSC110406  Persicaria punctata Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 Comment
  JEPS124336  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS18179  Petrorhagia dubia Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5615 Butte 5.3 mi n Bangor (along road from Oroville to Bangor) 182 Comment
  UCSB63949  Petrorhagia dubia Snodgrass, G. 1981-4-11 Butte Ca. 5 mi. E of Chico; ca. 1/2 miles E of Rockwood Lake entrance on Humbug Rd. (now Honeyrun Rd.) Comment
  SEINET10546870  Phacelia Mary Susan Taylor 1978-6-24 Taylor 1641 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC33711  Phacelia corymbosa J. D. Jokerst 1981-5-21 1327 Butte Pulga Rd., ca 1/10 mi NE of its junction with Hwy 70. Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 Comment
  SFV11587  Phacelia egena M. L. Vincent 1960-4-12 s. n. Butte Pentz Road on the way to Oroville from Paradise. 1 mile south of Paradise. Comment
  CHSC28793  Phacelia hastata subsp. hastata J. D. Jokerst 1979-7-21 298 Butte Humboldt Rd., N.E. corner of Butte County, at Humboldt summit. Comment
  RSA428016  Phacelia imbricata subsp. imbricata L. Ahart, P. Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. two miles east of Old Yankee Hill, ca. 16 miles northeast of Oroville. 450 Comment
  SD4077  Phacelia mutabilis E. B. Copeland 1930-7-13 Butte Jonesville 1550 Comment
  UC426939  Phacelia mutabilis E. B. Copeland 1930-7-13 446 Butte Jonesville 1550 Comment
  RSA134007  Phacelia mutabilis L. R. Heckard 1956-8-6 825 Butte Along Butte Creek just west of Jonesville. 1372 Comment
  CHSC98664  Phacelia purpusii B. Castro; L. P. Janeway 2005-8-1 1506 Butte Ca 0.5 mi S of Paradise Lake, on slopes overlooking Little Butte Creek, W of Coutelenc Rd and E of Creek. On rocky NW-facing open serpentine slope. 768 Comment
  UC478473  Phacelia racemosa E. B. Copeland Jul 11 1931-Jul 13 1931 684 Butte stony ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  SD4079  Phacelia racemosa E. B. Copeland 11-13 Jul 1931 Butte Jonesville, on bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CAS-BOT-BC259047  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson Comment
  JEPS87133  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  JEPS104010  Phalaris minor Lowell Ahart 2003-6-16 10286 Butte On the e side of Wickman Rd, ca 100 yd south of Richvale West Rd, ca 1 3/4 mi w of Richvale. 29 Comment
  UC820504  Phalaris minor Lewis S. Rose 1937-6-11 37384 Butte 7 mi w Honcut 22 Comment
  CHSC33672  Phalaris paradoxa L. Ahart 1991-5-24 2833 Butte On bottom of a wash in one of the pasture fields on Peter Ahart Ranch, ca. 2 mi e of Honcut. 50 Comment
  CHSC66101  Phalaris paradoxa Vernon H. Oswald 1996-5-23 7635 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee at the SW edge of Tract 9.2, Sanctuary I. 32 Comment
  CHSC45972  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 north-west of Forbestown. 365 Comment
  SBBG128084  Philadelphus lewisii L. Ahart 2009-5-23 15723 Butte S side of Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 311 Comment
  UC1392744  Philadelphus lewisii R. F. Hoover 1968-5-29 11136 Butte Cohasset Road Comment
  CHSC46608  Phleum alpinum V. Oswald; L. Ahart 1989-7-12 3853 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. On meadow. 1901 Comment
  CHSC20109  Phoradendron densum M. S. Taylor 1975-4-9 569 Butte In serpentine area ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 Comment
  CHSC11788  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  RSA754529  Phoradendron macrophyllum L. Ahart 2009-8-3 16255 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) W of Hwy 32, about 10 miles NE of Chico. 210 Comment
  HSC94024  Phoradendron serotinum subsp. macrophyllum Mary Drumm 1996-3-17 19 Butte Gray Lodge State Wildlife Refuge near parking lot 14 18 Comment
  JEPS120060  Photinia Lowell Ahart 2012-4-9 17824 Butte On the north side of South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  HSC97374  Phyllostachys bambusoides var. aurea J. P. Smith, J. O. Sawyer 2007-9-2 12421 Butte Ord Ferry Rd., SW of Dayton 42 Comment
  SEINET10931448  Physalis acutifolia Mary Susan Taylor 1977-10-10 Taylor 1507 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  CHSC97260  Physalis lancifolia Lowell Ahart 2007-8-19 14494 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UCD41361  Physalis lancifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 864 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
  RSA592544  Physocarpus capitatus S. O. Mattoon 1970-6-12 16 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC39546  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC78449  Pinus contorta subsp. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville 1524 Comment
  CHSC3901  Pinus ponderosa R. Carter 1967-7-31 501 Butte Found ca. 17 mi. NE of Oroville on W side of Big Bald Rock and E side of Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC102851  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 259 Comment
  SEINET10872490  Piperia elegans Mary Susan Taylor 1977-6-25 Taylor 1388 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC84863  Piperia elongata L. P. Janeway; John Hunt 2003-6-5 7808 Butte Northern Sierra Nevada Foothills. Top of low west-trending ridge into Lake Oroville 350 m west-southwest of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 296 Comment
  CHSC96757  Piperia elongata Lowell Ahart 2007-5-29 13929 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC88246  Piperia transversa Lowell Ahart 2004-7-11 11246 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
  SEINET10905338  Piperia unalascensis Mary Susan Taylor 1978-7-18 Taylor 1694 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  JEPS120071  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  UC2026875  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10470241  Pityrogramma pallida Lowell Ahart 1984-2-3 Ahart 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. Foothill Woodland; 100 m. 100 Comment
  SEINET10529820  Pityrogramma triangularis Mary Susan Taylor 1984-4-6 Taylor 5401 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC26781  Plagiobothrys austiniae M. S. Taylor; M. Hayes 1978-4-14 1569 Butte In vernal pools on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College Campus. 30 Comment
  CHSC67180  Plagiobothrys austiniae James D. Jokerst 1989-4-8 3092 Butte North Table Mtn., ca. 200 m N of Cherokee Rd. at a point where Cherokee Rd. drops off east edge of mesa. Comment
  JEPS115303  Plagiobothrys fulvus Lowell Ahart 2009-4-17 15544 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  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
  JEPS117191  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte On damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  CHSC116716  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 2016-5-24 20857 Butte 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-BC228252  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC228259  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 s.n. Butte Jonesville 1500 Comment
  CHSC23598  Plagiobothrys hispidulus K. R. Stern 1974-6-30 5768 Butte Coutelenc Road, 0.2 mi n of intersection with Skyway and ca. 1 mi n of Magalia. Comment
  CHSC37423  Plagiobothrys hispidulus R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4308 Butte E of Inskip and NW of Jones Meadow. 1706 Comment
  SEINET10497609  Plagiobothrys scriptus Lowell Ahart 1983-5-12 Ahart 3971 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
  CHSC103675  Plagiobothrys shastensis Lowell Ahart 2010-4-30 16601 Butte Open are along a ridge, 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
  CHSC29059  Plagiobothrys stipitatus R. A. Schlising 1979-4-15 3366 a Butte Richvale vernal pools; 1/4 mile S of Jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC48002  Plagiobothrys stipitatus Vernon Oswald 1983-5-6 434 Butte Nord-Cana Hwy. 0.5 mi n of Bennett Rd. Along the edge of a vernal pond. Comment
  UC196291  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  UC78200  Plagiobothrys stipitatus R. M. Austin Apr 1896 626 Butte Adobe Swales Butte Creek Comment
  CHSC104001  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16819 Butte Bottom of Wyandotte Creek, under the government pole line, about 1 mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC29043  Plagiobothrys stipitatus var. micranthus J. D. Jokerst 1979-4-6 544 Butte At the edges of dry vernal pools (at the high water mark). Top of North Table Mt, N of Cherokee Rd. 403 Comment
  CHSC31579  Plagiobothrys stipitatus var. micranthus L. Ahart 1974-4-14 405 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC75256  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1999-5-21 8075 Butte On the sides an bottom of a drain ditch in a pasture field, on the east side of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC38279  Plagiobothrys tenellus Vernon Oswald 1983-3-6 122 Butte Upper Bidwell Park, Chico, near the top of the north slope 0.2 mi e of the end of the North Rim Trail. 390 Comment
  HSC32646  Plagiobothrys tenellus David Johnson 1974-4-20 61 Butte Table Mtn. Comment
  CDA25099  Planodes virginica L. Ahart 2001-4-27 8733 Butte Just northwest of the bridge across Wyandotte Creek, north of Lower Honcut Road, about 125 yards west of the railroad, about 1 1/4 miles east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. Comment
  RSA638254  Plantago Michael A. Vincent, E. Freid 1998-4-6 8120 Butte Table Mountain Comment
  CHSC52185  Plantago coronopus J. D. Jokerst; V. Oswald 1985-4-14 2230 Butte Occasional along dirt road. Top of North Table Mountain near east edge of mesa north of Cherokee Road. 396 Comment
  UC195449  Plantago erecta A. A. Heller 1914-4-14 11288 Butte 8 mi n Oroville Comment
  RSA325092  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, ca 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca 2 mi N of Lake Concow, ca 20 air mi NE of Oroville. 854 Comment
  SEINET12328379  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  CHSC34141  Plantago major L. Ahart 1981-9-27 3213 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  JEPS115884  Plantago major Lowell Ahart 2009-6-19 15920 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC80670  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS102499  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) SW of Oroville. 42 Comment
  JEPS98313  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10938438  Platanthera Mary Susan Taylor 1980-4-18 Taylor 2500 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC50438  Platanthera sparsiflora Vernon Oswald; Lowell Ahart 1990-6-20 4303 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  JEPS115640  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UC118461  Platystemon californicus Mrs. R. M. Austin Apr 1896 170 Butte plains e Chico; plains e of Chico Comment
  POM181674  Plectritis macrocera subsp. macrocera Williams 1927-4-11 s.n. Butte Near Chico Comment
  CHSC61375  Poa compressa Lowell Ahart 1993-7-23 7094 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC8574  Poa pratensis J. G. Moore 1969-4-21 23 Butte Next to sidewalk on 11th St. 20 yds. w of Oakdale St., Chico. 60 Comment
  RSA700237  Poa pratensis L. Ahart 2004-7-23 11304 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, bout 1.5 miles (air) west of Philbrook Reservoir Dam., About 3 3/4 miles (air) southeast of Butte meadows. 1457 Comment
  SACT001941  Poa pratensis Herbert Copeland 1929-5-10 Butte In damp open places 1500.0 Comment
  CHSC101746  Poa pratensis subsp. pratensis Lowell Ahart 2009-5-23 15746 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
  CHSC32590  Poa secunda subsp. secunda J. D. Jokerst; Jeri Donovan 1981-3-21 1258 Butte Ca 0.5 mi N of Horseshoe Lake (Upper Bidwell Park), Chico. where the foothills begin the initial rise. Comment
  CHSC85416  Poa secunda subsp. secunda John Dittes 1992-5-5 466 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  JEPS117705  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16675 Butte On the south side of the Guardian Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico 301 Comment
  CHSC772  Pogogyne douglasii D. Bower 1953-7-16 Butte 4A Llano Seco. 30 Comment
  UC1988910  Pogogyne douglasii Robert F. Hoover 1936-5-20 1155 Butte ten miles southwest of Oroville Comment
  CDA36761  Pogogyne ziziphoroides D. B. Joley 1971-4-24 Butte Chico; Morrow Lane, ca. 50 yards east of Pacific Telephone, 5 yards north of road. Comment
  RSA0022166  Pogogyne zizyphoroides L. S. Rose 1963-6-5 6314 Butte 3 mi. w of Palmero 46 Comment
  SEINET13947030 Image available Pogogyne zizyphoroides A. A. Heller 1927-1 14345 Butte 9 mi N of Chico in the region where Hartweg got the type Comment
  CHSC50659  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1990-6-1 6504 Butte On the south edge of Durham Highway, about 1 mile west of Highway 99, about 3 miles east of Durham. 60 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
  CAS-BOT-BC167548  Polygala cornuta var. cornuta Lowell Ahart 1988-6-15 6042 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  JEPS115673  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side 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, about 10 miles northeast of Chico 369 Comment
  RSA754850  Polygala cornuta var. cornuta L. Ahart 2009-5-30 15776 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC45856  Polygonum bidwelliae Lowell Ahart 1979-5-7 1861 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  UCD99854  Polygonum bidwelliae F. T. Griggs 1978-5-31 s.n. Butte East of Rifle Range, Upper Bidwell Park, Chico. 91 Comment
  CHSC32757  Polygonum bolanderi J. D. Jokerst 1981-4-3 1282 Butte Butte Cr. Canyon, ca 1/2 mi E of Centerville at the top of the Penstock of PG and E power plant. 365 Comment
  CHSC63716  Polygonum californicum Lowell Ahart 1994-10-10 7562 Butte On the banks of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD100175  Polygonum californicum Lowell Ahart 1981-11-6 3216 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC466040  Polygonum californicum Mrs. R. M. Austin May 1883 14 Butte mesa near Chico Comment
  POM219181  Polygonum davisiae H. F. Copeland 1928-8-29 345 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  UC392223  Polygonum davisiae E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  CAS-BOT-BC414419  Polygonum douglasii Lowell Ahart 1988-7-31 6158 Butte On the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City 1066 Comment
  SD1173  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, on shaded gravel bars by Butte Creek 1500 Comment
  CHSC117353  Polygonum pensylvanicum B. Castro; Margie Graham and Stephanie Chun 2009-7-1 1798 Butte Sacramento Valley. 10 air mi W of Gridley, 0.4 mi S of Gridley Rd, off SE bank of Cherokee Canal 0.2 mi NE of southward bend in canal. Ca 40 ft out from levee toe, near edge of managed tule marsh wetlands of adjacent duck club, about even with line of willows. 18 Comment
  SEINET13711418  Polygonum persicaria Lowell William Ahart, Lowell William Ahart 1999-1 8270 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UC849887  Polygonum persicaria A. A. Heller 1916-9-30 12663 Butte hills 8 mi n Oroville Comment
  UC204448  Polygonum phytolaccifolium A. A. Heller 1914-8-8 11672 Butte Jonesville; stream bank 1524 Comment
  SEINET10479670  Polygonum phytolaccifolium Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4208 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
  CHSC27968  Polygonum polygaloides subsp. kelloggii M. S. Taylor 1978-7-19 1765 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  UC1191264  Polygonum punctatum Herbert L. Mason and Verne Grant 1946-9-4 13109 Butte West Gridley Rd 833 Canal Comment
  RSA795637  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte East edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 air miles northeast of Chico. 190 Comment
  RSA754944  Polypogon interruptus L. Ahart 2008-5-12 14741 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
  UCD51660  Polypogon interruptus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  CHSC4402  Polypogon monspeliensis R. L. Smith 1966-5-1 2 Butte 5 mi sw of post office, Paradise. Comment
  JEPS103284  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10508535  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4237 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC116274  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-24 20584 Butte 100 yards southwest of the bridge across Butte Creek, on the north side of Doe Mill Road, about 3 miles (air) north of De Sabla Resevoir. 660 Comment
  CHSC37655  Polystichum munitum T. B. Devine 1981-8-25 758 Butte Beside Hwy 70 near Bear Ranch Creek, along N Fork of Feather River near Cresta. 426 Comment
  CHSC41888  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte South of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  UC600407  Populus tremuloides H. F. Copeland 1930-7-26 Butte Jonesville Comment
  JEPS124343  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CHSC46884  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-4 3978 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 56 Comment
  CAS-BOT-BC453685  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  RSA4631  Potamogeton illinoensis E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  CAS-BOT-BC454086  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  CDA26064  Potentilla anglica J. Harroun 1966-5-3 Butte 324 Frances Willard, Chico. 0 Comment
  CHSC12115  Potentilla glandulosa M. F. Smith 1972-4-22 4 Butte Southeast of Lower Feather Falls reservoir about 500 ft. south of Lumpkin Road at east end of old mill. 914 Comment
  CDA13900  Potentilla glandulosa subsp. glandulosa G. F. Hrusa, T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada; Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  SEINET10871270  Potentilla glandulosa subsp. reflexa Mary Susan Taylor 1976-5-5 Taylor 1115 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC48862  Potentilla gracilis var. fastigiata Vernon Oswald 1983-7-6 820 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Meadow. 1325 Comment
  UC481577  Potentilla millefolia H. F. Copeland 1931-6-11 1535 Butte Butte Creek Meadows , Jonesville 1828 Comment
  CHSC50562  Poteridium annuum Vernon Oswald; Lowell Ahart 1990-7-5 4347 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  UCD125325  Prunella vulgaris L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC28927  Prunella vulgaris var. lanceolata M. S. Taylor 1978-7-21 1819 Butte On s side of Oroville-Quincy Hwy along creek, in a meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC52062  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 146 Butte Ca 5.5 mi n of Inskip on e side of Humbug Summit Road ('Skyway' on quad map) opposite Cornelia Lott Sank Memorial Spring. 1536 Comment
  CHSC52222  Prunella vulgaris var. lanceolata L. P. Janeway 1988-6-19 2831 Butte 2.6 mi N of Stirling City towards Inskip. Along logging road 0.1 mi W of the Skyway. 1173 Comment
  JEPS124141  Prunus cerasifera Lowell Ahart 2015-8-21 20522 Butte On the southeast corner of the intersection of Cox Lane and Lone Tree Road, about 10 miles south of Oroville. Comment
  CDA38804  Prunus dulcis L. P. Janeway 2012-3-6 10792 Butte Sacramento Valley; Southern edge of Chico; fence-line along west side of Hwy 99 just south of Estates Drive. Comment
  HSC97095  Pseudognaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  CHSC34411  Psilocarphus brevissimus var. brevissimus R. M. Winchell 1980-4-23 1 Butte N of Chico, between Singer Creek and Cana-Pina Creek Road. Comment
  CAS-BOT-BC72553  Pteridium aquilinum Javier Penalosa 1962-6-18 2443 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC57334  Pteridium aquilinum var. pubescens Robert C. Hill 1990-4-10 7 Butte Large population at junction of Enterprise Bridge and south Fork Feather River, 13 mi e of Oroville. 426 Comment
  CAS-BOT-BC460485  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 Comment
  JEPS117715  Pterostegia drymarioides Lowell Ahart 2010-5-16 16697 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC53990  Puccinellia simplex Vernon H. Oswald 1991-4-25 4532 Butte West Liberty Rd, 0.8 mi west of Pennington Rd, on the north edge of Gray Lodge Wildlife Area. Flat on the south side of the road just west of the PG and E Substation. 20 Comment
  CHSC31439  Pycnanthemum californicum L. Ahart 1980-7-29 2503 Butte Near a small stream near Forbestown Rd,ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC97336  Pycnanthemum californicum L. P. Janeway 2007-8-6 9152 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Large patch of this on slope next to east side of pond. 776 Comment
  JEPS119779  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18020 Butte South of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC48675  Pyrola aphylla Vernon Oswald 1987-7-13 3106 Butte Near Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  RSA0080623  Pyrola dentata L. Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 Comment
  CHSC11802  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  SBBG28971  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  UC474256  Pyrola picta H. F. Copeland 1930-8-26 Butte Jonesville, woods above hotel Jonesville Comment
  UC726204  Pyrola picta A. A. Heller 1941-6-22 16181 Butte at Cohassett Comment
  CHSC110989  Pyrus calleryana Lowell Ahart; L. Hanson, S. Bazell, J. Guardino 2012-5-17 18073 Butte On the west side of a horse trail, about 50 ft. south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC94690  Quercus X howellii John Thomas Howell 1955-6-15 30491 Butte 6 miles from Paradise on road to Pentz 426 Comment
  RSA134789  Quercus berberidifolia Percy C. Everett, E. K. Balls 1959-10-20 23907 Butte 8.6 miles ne. from Chico along State Hwy. 32, toward De Sabla. 488 Comment
  UCD162814  Quercus berberidifolia D. O. Burge 2015-3-16 1686 Butte Butte Creek watershed, below Doe Mill Ridge. 243 Comment
  CAS-BOT-BC86636  Quercus douglasii Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC104826  Quercus douglasii Lowell Ahart 2010-6-1 16762 Butte On the north side of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 172 Comment
  POM106172  Quercus douglasii C. C. Bruce 1897-05 1797 Butte Little Chico. Comment
  SEINET10477880  Quercus durata Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3476 Butte T23N R4E northcentral sec 30; Paradise quad. Ca. 1/5 mi se of Ponderosa Way Bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (and downhill) of Magalia. Steep serpentine slope; 1800 ft. 549 Comment
  CAS-BOT-BC62795  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  CAS-BOT-BC61582  Quercus lobata G. P. Rixford 1912-10-1 s.n. Butte Bidwell Ranch, Chico Comment
  CAS-BOT-BC61585  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat in the Sacramento valley near Durham 68 Comment
  RSA134791  Quercus lobata Percy C. Everett, E. K. Balls 1959-10-20 23905 Butte Bidwell Park, Chico. Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  POM219180  Quercus vacciniifolia H. F. Copeland 1928-8-14 335 Butte Neighborhood of Jonesville, above Scotch-John Creek. 1829 Comment
  CHSC100496  Quercus wislizeni var. wislizeni Lowell Ahart; John Dittes 2008-11-14 15451 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  UCD47602  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Road to Table Mtn from Oroville. 293 Comment
  CHSC48697  Ranunculus aquatilis var. aquatilis Vernon Oswald 1984-3-2 1088 Butte Beside Meridian Rd. ca 9.5 mi nnw of Chico and 0.6 mi s of the Tehama-Butte County line. In a drainage in a field. 83 Comment
  CHSC4566  Ranunculus aquatilis var. capillaceus C. Glascock 1965-1-27 202 Butte In water. Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  CHSC46842  Ranunculus aquatilis var. hispidulus L. V. Ritter 1969-5-5 259 Butte E shoe of Horseshoe Lake, Bidwell Park. Comment
  CHSC110446  Ranunculus arvensis B. Castro 2007-4-19 1620 Butte Sacramento Valley. Ca 0.7 mi S of Chico Airport, N of Sycamore Creek and W of Cohasset Rd. In a shallow depression off N edge of Large old spoils pile, ca 550 ft W of Cohasset Rd and 310 Ft N of levee along Sycamore Creek, in area of grazed grassland and scattered shallow vernal depressions. 57 Comment
  UCD80871  Ranunculus arvensis Robert E. Preston 2007-5-3 2473 Butte Chico, Upper Bidwell Park, N of park road, W of power lines. 91 Comment
  JEPS123888  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  SEINET12089318  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run Rds 146 Comment
  JEPS116083  Ranunculus hebecarpus Lowell Ahart 2009-4-22 15592 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  CHSC115444  Ranunculus occidentalis M. Sutton; C. Yasuda 2013-4-9 28 Butte Centerville Flumes. 350 Comment
  CHSC109064  Ranunculus occidentalis var. occidentalis Lowell Ahart 2012-4-30 17921 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  CHSC23135  Ranunculus occidentalis var. occidentalis M. S. Taylor 1976-2-17 996 Butte Ca. 10 ft s of Big Chico Creek, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  RSA126011  Ranunculus occidentalis var. ultramontanus E. K. Balls 1957-5-22 22518 Butte SW shore, Lake Almanor, W of Big Meadows Dam, 1402 Comment
  UCD149968  Ranunculus uncinatus Harry A. George 1967-4-24 s.n. Butte Table Mtn. Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  CAS-BOT-BC59884  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra Foothills. Comment
  CAS-BOT-BC59925  Rhamnus ilicifolia Lowell Ahart 1980-5-17 2299 Butte 1/2 mi. se. of Hurleton. 600 Comment
  CHSC62490  Rhamnus ilicifolia B. Castro 1987-5-18 105 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive within general area of Foothill Woodland/Chaparral/Grassland mosaic. 445 Comment
  POM85713  Rhamnus tomentella subsp. tomentella C. C. Bruce 1898-01 1889 Butte Valley Comment
  RSA712801  Rhamnus tomentella subsp. tomentella L. P. Janeway 2005-6-26 8433 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  POM87358  Rhus trilobata var. pilosissima C. C. Bruce 1897-05 1819 Butte Little Chico Comment
  CHSC89896  Rhynchospora californica L. P. Janeway 2004-12-11 8326 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope about 350 m north of Parking Lot F; west side of major ephemeral drainage about 240 m west of upper high voltage power lines. Seep about 50 m long, 25 m wide. 116 Comment
  UC1594576  Rhynchospora capitellata Lowell Ahart 1992-8-2 6901 Butte about 3 (air) mi ne Concow Reservoir (w side of meadow); Concow Meadow 1097 Comment
  CAS-BOT-BC111924  Rhynchospora glomerata var. minor Lowell Ahart 1980-7-20 2481 Butte At Little Bald Rock. 1100 Comment
  CAS-BOT-BC92267  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Near DeSabla. Comment
  UC600615  Ribes inerme var. inerme H. F. Copeland 1930-7-25 Butte Jonesville, meadow below cabin Jonesville Comment
  SFV10396  Ribes laxiflorum M. L. Vincent 1968-6-10 835 Butte Sierra Nevada 1.2 miles south from Cresta Power House sign, North Fork Feather River. 460 Comment
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Dec 6 2013
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  UC436293  Ribes nevadense E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  CHSC44939  Ribes roezlii Richard Steward 1988-4-25 8 Butte Ca. 6 mi n, 1.5 mi nw of Paradise. 640 Comment
  UC857964  Ribes roezlii A. A. Heller 1915-6-11 11970 Butte Chico Meadows Sierra Nevada 1219 Comment
  CAS-BOT-BC198953  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198956  Ribes roezlii var. roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville 1524 Comment
  JEPS119714  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET13942866 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  JEPS115290  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  UC221006  Rorippa Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2089 Butte near Chico; near Chico Comment
  CDA25116  Rorippa curvisiliqua var. occidentalis L. Ahart 2002-10-17 9988 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC113161  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-13 19231 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
  CHSC38014  Rorippa curvisiliqua var. orientalis M. S. Taylor 1981-5-15 3746 Butte W side of Rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1158 Comment
  UCD22656  Rorippa nasturtium-aquaticum Elizabeth I. Schwartz 1990-5-12 9 Butte North side of Northfork Feather River. 670 Comment
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 Comment
  CHSC65428  Rosa bridgesii Vernon Oswald 1987-5-28 2939 Butte Concow Rd. 0.4 mi s of Flea Valley. 1097 Comment
  CHSC26640  Rosa californica M. S. Taylor 1977-11-10 1533 Butte In Devils Kitchen on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC50340  Rosa gymnocarpa Vernon Oswald 1990-5-14 4216 Butte Big Bald Rock located ca. 3 miles south of Brush Creek. At the picnic area. 966 Comment
  RSA718379  Rosa gymnocarpa L. Ahart 2006-6-24 12856 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CAS-BOT-BC148254  Rosa woodsii var. ultramontana Clarence R. Quick 1952-6-29 52 -88 Butte Near spring, 0.3 mile west of Coyote Gap on Mill Creek Road - Sierra Nevada Comment
  JEPS98345  Rotala ramosior Lowell Ahart 2000-8-28 8667 Butte 6 air miles SW of Oroville (Oroville Wildlife Area, about 1/2 mi W of Oak Grove and Hwy 70, NW edge of large man made lake) 42 Comment
  CDA37505  Rotala ramosior T. C. Fuller 1976-7-8 20146 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CHSC27260  Rubus armeniacus P. Moyer 1971-11-7 66 Butte CSUC campus. N bank of Chico Ck. behind cafe annex. 60 Comment
  CHSC6656  Rubus armeniacus M. MacArthur 1968-6-17 167 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  CHSC23656  Rubus laciniatus M. S. Taylor 1976-4-24 1065 Butte Ca. 10 ft w of Oroville-Quincy Hwy, ca. 50 ft s of Lake Madrone, in vicinity of Berry Creek entrance to the Lake. 914 Comment
  CHSC29237  Rubus laciniatus M. S. Taylor 1980-5-8 2606 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  SEINET10483577  Rubus laciniatus Mary Susan Taylor 1980-5-27 Taylor 2649 A Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  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
  CHSC50341  Rubus pensilvanicus Vernon Oswald 1990-5-14 4212 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  OBI69165  Rubus ursinus Kari Fisher, Bill Fisher 2000-11-11 56 Butte Bidwell Park, along path by 5 mi Rec area. 82 Comment
  CHSC37136  Rumex acetosella L. Ahart 1982-5-28 3443 Butte Under a Digger Pine and near a small wash, e of North Honcut Creek, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC111172  Rumex conglomeratus Lowell Ahart 2013-6-18 18805 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CAS-BOT-BC421734  Rumex conglomeratus Lowell Ahart 1989-5-31 6331 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC1356  Rumex crispus H. Goodyear 1939-5-29 Butte Near Chico. 57 Comment
  UCD101344  Rumex occidentalis A. A. Heller 1914-7-23 11595 Butte Chico Meadows. 1219 Comment
  CHSC38623  Rumex salicifolius var. denticulatus Vernon Oswald 1982-8-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 85 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
  CHSC35703  Rumex salicifolius var. triangulivalvis J. D. Jokerst; M. S. Taylor, L. Ahart 1982-4-29 1546 Butte Grey Lodge Waterfowl Management Area, S of Rutherford Rd on dirt road. Comment
  CHSC99673  Rupertia hallii R. A. Schlising 2006-8-16 4464 Butte Carpenter Ridge, southwest of Butte Meadows, in scraped roadside of Humboldt Road, 2 miles east of junction Hwy 32. 1380 Comment
  CHSC60581  Sagina apetala Vernon H. Oswald; Lowell Ahart 1993-4-21 5290 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  JEPS118328  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  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
  UC426897  Sagittaria cuneata E. B. Copeland 1930-7-29 5 Butte above Jonesville; above Jonesville 1700 Comment
  CAS-BOT-BC445728  Sagittaria latifolia E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CHSC55806  Sagittaria latifolia var. obtusa Vernon H. Oswald; Lowell Ahart 1991-8-28 4855 Butte Gravel road 0.5 mile south of Richvale East Rd, 0.25 mile west of Hwy 99 and the Thermalito Afterbay, on the north boundary of the Richvale Vernal Pools. 33 Comment
  CHSC2052  Sagittaria montevidensis subsp. calycina D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  CHSC45310  Sagittaria sanfordii Vernon Oswald 1988-10-23 3709 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CHSC45311  Sagittaria sanfordii Vernon Oswald 1988-10-25 3716 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CHSC45314  Sagittaria sanfordii Vernon Oswald 1988-10-25 3713 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CAS-BOT-BC103451  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  CHSC108837  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 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
  CAS-BOT-BC107835  Salix gooddingii J. T. Howell 1959-9-20 34657 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC3195  Salix gooddingii Virginia Hagaman 1966-5-3 44 Butte Lower Bidwell Park along entrance road on east side of Highway-overpass. Comment
  RSA0045621  Salix gooddingii Lowell A. Ahart 2012-4-17 17872 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
  SBBG128458  Salix gooddingii L. Ahart 2012-4-3 17803 Butte N bank of N Honcut Crk, Peter Ahart Ranch, ca. 1.25 mi N and 2.75 mi E of Honcut, ca. 12 mi SE of Oroville 38 Comment
  SEINET10539215  Salix hindsiana Mary Susan Taylor 1975-10-3 Taylor 935 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  POM106719  Salix laevigata C. C. Bruce 1897-05 1788 Butte Big Chico. Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  CAS-BOT-BC125181  Salix lasiandra var. lasiandra Lowell Ahart 1982-5-8 3408 A Butte Near Forbestown Reservoir 800 Comment
  CAS-BOT-BC125316  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CDA38779  Salix lasiandra var. lasiandra L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC129623  Salix lasiolepis var. lasiolepis John Thomas Howell 1959-9-20 34658 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  CHSC65012  Salix melanopsis Vernon Oswald 1987-7-6 3094 Butte Butte Creek Reserve on the s side of Butte Creek, ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  SBBG29048  Salix melanopsis E. B. Copeland 1931-6-10 Butte Butte Crk, Jonesville 1500 Comment
  JEPS116659  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Chico Chico (north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road); Sacramento Valley 63 Comment
  CDA42945  Salsola tragus L. Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. Comment
  CHSC110041  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. 90 Comment
  CHSC792  Salvia sonomensis M. Davidson 1929-5-19 Butte Cohasset road. 457 Comment
  SD6666  Salvia sonomensis Mrs. R. M. Austin Butte Comment
  UC883825  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  SEINET12318608  Salvia sonomensis E. D. Osman 1978-1 21 Butte Ca 0.5mi E of Cohasset Hwy & 18.2 mi NEN of Chico. Richardson Springs Quadrangle, 15'. Central W * 512 Comment
  CHSC31030  Sambucus mexicana M. S. Taylor 1978-7-21 1809 Butte On S side of Oroville-Quincy Hwy. Ca. 14 mi N of Lake Madrone. 1463 Comment
  UC195403  Sambucus mexicana A. A. Heller 1914-4-27 11326 Butte banks of winter stream 8 mi n Oroville Comment
  UC426975  Sambucus racemosa var. microbotrys E. B. Copeland 1930-7-12 480 Butte above Jonesville (n brow of high ridge) 2100 Comment
  CHSC101262  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC31896  Sanicula bipinnata L. Ahart 1974-3-18 325 Butte Along North Honcut Creek; Peter Ahart Ranch, Honcut. 45 Comment
  SEINET12121438  Sanicula bipinnatifida Unknown 1981-1 11 Butte approx. 1 mi E of Chico, 250 ft N of Bidwell Park road 207 Comment
  CHSC70778  Sanicula graveolens B. Castro 1995-5-18 569 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, on S side of USFS Rd 21N25. On dirt berm 15-20 ft S of road edge. 1094 Comment
  CHSC28650  Sanicula tuberosa M. S. Taylor 1979-3-20 1928 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of bridge over north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  JEPS117134  Sanicula tuberosa Lowell Ahart 2010-5-7 16621 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  SEINET10454591  Sanicula tuberosa Mary Susan Taylor 1980-4-18 Taylor 2521 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CHSC36298  Saponaria officinalis M. S. Taylor 1982-8-16 4987 Butte S end of Stirling City along both sides of the Skyway. 1036 Comment
  SBBG26811  Sarcodes sanguinea E. B. Copeland 1931-7-1 Butte Jonesville Comment
  CAS-BOT-BC466335  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CAS-BOT-BC213687  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico creek 76 Comment
  JEPS115232  Saxifraga integrifolia Lowell Ahart, John Dittes 2009-3-20 15510 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  CHSC29015  Scandix pecten-veneris M. S. Taylor; J. D. Jokerst 1980-4-4 2461 Butte On w side of La Porte Rd, ca. 2 mi n of Bangor. 335 Comment
  CHSC4182  Scandix pecten-veneris Kathy Sommarstrom 1967-4-15 30 Butte Found to the right side of Honey Run Rd in front of new bridge next to covered bridge. 76 Comment
  UCD128129  Scandix pecten-veneris W. R. Powell 1968-5-16 1506 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  CDA4987  Schinus molle G. Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills; Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 feet southwest of the base of Oroville Dam. Comment
  CHSC47145  Schoenoplectus acutus var. occidentalis Henricus Jansen 1989-6-15 Butte Wild Goose. Sutter Butte Sink. Comment
  CHSC57152  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of Skyway, 2.9 mi east of the Butte Creek bridge. 170 Comment
  CHSC41303  Scirpus diffusus S. C. Morey 1983-7-22 539 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET10467274  Scirpus diffusus Mary Susan Taylor 1978-7-18 Taylor 1722 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  SEINET10467275  Scirpus koilolepis Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4048 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
  CHSC44402  Scutellaria californica Lowell Ahart 1988-6-21 6057 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  UC1594542  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte about 2 air mi n of Oroville (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, n side of dirt road); Thermalito Diversion Pool, Lake Oroville Recreation Area 76 Comment
  SEINET10499137  Scutellaria californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4060 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CAS-BOT-BC240054  Secale cereale Lowell Ahart 1987-5-6 5571 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC2185  Secale cereale H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave. at Ceanothus Ave., Chico. 57 Comment
  CAS-BOT-BC415018  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  CHSC30874  Sedella pumila J. D. Jokerst 1979-4-2 1174 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  CHSC457  Sedella pumila R. Carter 1964-3-23 63 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 250 yds. E of rd. along rim of table. 60 Comment
  CHSC90600  Sedella pumila John P. McKeon 1980-4-24 12 Butte Ca. 30 m s of jct of Hwy 32 and Humboldt Rd. 20 m e of Hwy 32. 8.3 km e of Chico. 265 Comment
  CHSC90601  Sedella pumila Steven H. Roth 1980-3-15 6 Butte 50 m s Butte Creek at the Honeyrun bridge, 10 km se of Chico. Comment
  CHSC90604  Sedella pumila M. J. Luesebrink 1978-4-12 16 Butte Ca. 300 ft. s of Butte Creek, ca. .25 mi sw of Covered Bridge, n of Humbug Rd., 4.4 mi ne of junction with Skyway Rd., 5.7 mi ese of Chico. 91 Comment
  HSC92528  Sedella pumila Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 30 Butte On N Table Mtn., S of Paradise on Cherokee Rd., S end of Table Mtn. proper 381 Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  SEINET8552582  Sedum B. Nightingale 1961-4-29 s.n. Butte Butte Creek, ca 10 miles E of Chico. 61 Comment
  CHSC24643  Sedum spathulifolium S. Deaton 1976-4-23 37 Butte Ca. 1 3/4 mi n of Feather Falls trail parking lot, n side of trail. 853 Comment
  CHSC38407  Sedum spathulifolium Vernon Oswald 1983-4-1 250 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 600 ft w of the power lines. 134 Comment
  CHSC87786  Sedum spathulifolium Paul Maslin 2004-4-15 16 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610128E 4409116N. 396 Comment
  RSA638250  Selaginella hansenii Michael A. Vincent, Ethan H. Freid 1998-4-6 8116 Butte Table Mountain Comment
  CHSC28413  Selaginella wallacei M. S. Taylor 1979-9-28 2193 Butte Butte county line at Hwy 70, between boundry and Arch Rock tunnel. 487 Comment
  CHSC29021  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2439 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  SEINET10474907  Senecio eurycephalus var. lewisrosei Mary Susan Taylor 1981-5-21 Taylor 3766 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  SEINET10839270  Senecio triangularis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5117 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  CHSC48129  Sericocarpus oregonensis Vernon H. Oswald 1985-8-15 1930 Butte Skyway 0.2 mi S of Inskeep. 1463 Comment
  CHSC3154  Sherardia arvensis Dona Kingsford 1966-5-21 Butte 0.5 miles SW of 4th street entrance to Bidwell Park, Chico. Comment
  JEPS102345  Sibara virginica Lowell Ahart 2001-4-27 8733 Butte 1 3/4 mi W of Honcut (just NW of bridge across Wyandotte Creek, N of Lower Honcut Road, 125 yds W of the railroad) 26 Comment
  CHSC28392  Sibbaldia procumbens J. D. Jokerst 1979-6-21 305 Butte On the N.W. slope of Humboldt Peak. 2072 Comment
  SEINET10483281  Sibbaldia procumbens Mary Susan Taylor 1979-7-21 Taylor 2161 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  LA205920  Sidalcea asprella subsp. asprella C. L. Hitchcock; 1952-5-28 19536 Butte Oroville - Forbestown Road, about 8 mi. E of Oroville Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  UCD116584  Sidalcea calycosa Arthur W. Dawson 1982-4-18 12 Butte 50 m south of Highway 32, 2.5 km east of U.S. 99. 75 Comment
  CHSC75384  Sidalcea diploscypha Jennifer Slater 1997-4-27 36 Butte Upland the Wurlitzer addition of the Vina Plains Preserve, west of the Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC33519  Sidalcea glaucescens R. A. Schlising; R. Preston, R. Banchero 1981-7-14 4145 Butte NE Butte County, 0.3 mi SW of Humbug Summit. 1981 Comment
  SFV2295  Sidalcea hartwegii B. Fuller 1962-5-8 s. n. Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. At the spring. 480 Comment
  UC725445  Sidalcea hartwegii A. A. Heller 1940-5-5 15573 Butte above the 10 Mile House site (between Big and Little Chico Creeks); between Big and Little Chico Creeks Comment
  HSC85995  Sidalcea hartwegii J. Hunter 1986-4-21 53 Butte N side of Chico Cr., 5 mi. E of Chico Golf Course, near parking lot N in Bidwell Park Comment
  SBBG17390  Sidalcea hartwegii M. Vincent 1962-4-17 199 -A Butte 4 mi S of Paradise at Kunkel reservoir Comment
  SEINET10970676  Sidalcea hartwegii Lowell Ahart 1984-5-7 Ahart 4594 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  POM61858  Sidalcea hirsuta A. A. Heller, H. E. Brown 1902-5-15 5557 Butte Near Biggs. Comment
  UC725340  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte 10 mi n of Chico (on U.S. Highway 99E); U.S. Highway 99E Comment
  CHSC34947  Sidalcea oregana subsp. spicata R. Schlising; R. Banchero 1980-8-1 3958 Butte Near east end of Philbrook Lake. Comment
  CHSC37440  Sidalcea robusta R. A. Schlising 1982-2-21 4225 Butte S of Paradise, near Elliot Spring House; slopes of Hamlin Canyon. 213 Comment
  RSA88031  Sidalcea robusta C. L. Hitchcock 1952-5-28 19535 Butte Along Paradise-Durham Road about 5 miles south of Paradise Comment
  CDA30191  Silene antirrhina L. P. Janeway, David Toren, Heather Koeth, Duryea Delacroix 2008-6-11 9406 Butte Northern Sierra Nevada Foothills; Plumas National Forest; along French Creek Road about 3.0 road km northeast of Oroville-Quincy Hwy and 1.0 air km west of Mountain House; slopes east above Mosquito Creek. Old road cutbank. Comment
  CHSC45556  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Near the edge of Ponderosa Way, about 1 1/2 miles south of the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  JEPS114713  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CAS-BOT-BC384539  Silene bridgesii Lowell Ahart 1988-6-29 6103 Butte Near Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock 944 Comment
  SEINET11933241  Silene californica K. L. Tarp 1981-1 Butte Bidwell Park NE of Chico, W of Big Chico Creek 219 Comment
  CAS-BOT-BC385885  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte along trail to Humboldt Peak, at Humboldt Summit 2133 Comment
  RSA4443  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville; near the Summit. 2100 Comment
  UC478524  Silene douglasii E. B. Copeland 1931-6-19 634 Butte near the Summit (Jonesville); Jonesville 2100 Comment
  CHSC93502  Silene gallica Lowell Ahart 2006-5-8 12592 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 336 Comment
  UC203623  Silene gallica A. A. Heller 1914-4-24 11319 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC24878  Silene laciniata subsp. californica D. J. Funk 1976-4-15 11 Butte Ca. 50 yd w of Mud Creek. 682 Comment
  CHSC4206  Silene laciniata subsp. californica J. Senter 1967-4-17 24 Butte Located ca. 4 mi. from Horseshoe Lake on north bank off upper Bidwell Rd. 91 Comment
  CHSC39503  Silene lemmonii Lowell Ahart 1993-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls. 600 Comment
  CHSC46830  Silene lemmonii R. A. Schlising; L. P. Janeway 1988-7-1 4557 Butte NE part of county, NE of Snow Mountain, near small un-named lake. Comment
  UC120147  Silene lemmonii unknown Butte Jonesville 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
  CHSC29735  Sisymbrium officinale J. D. Jokerst 1980-4-17 593 Butte Top of North Table Mt. 472 Comment
  CHSC546  Sisymbrium officinale E. Canfield 1904-5-10 Butte Hooker Oak Field. 76 Comment
  CHSC113480  Sisyrinchium bellum Lowell Ahart 2014-7-10 19619 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC12106  Sisyrinchium bellum J. M. Pitts 1972-4-19 149 Butte 3.5 mi ne Honeyrun Rd on Humbug Rd. n side of road. Comment
  SBBG119799  Sisyrinchium bellum L. Ahart 2006-7-16 12998 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  CHSC64242  Sisyrinchium idahoense S. C. Morey 1983-8-1 663 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC844610  Smilacina racemosa A. A. Heller 1915-6-11 11968 Butte Chico Meadows Sierra Nevada 1219 Comment
  HSC23325  Solanum parishii Carolyn Fante 1971-10-19 23 Butte E side Humbug Rd. 146 Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CHSC95297  Solanum physalifolium var. nitidibaccatum Lowell Ahart 2006-10-30 13517 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 31 Comment
  UCD126978  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-5-13 1600 Butte Peter Ahart Ranch, Honcut. 15 Comment
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  CAS-BOT-BC157641  Solanum umbelliferum E. B. Copeland 1930-7-27 453 Butte Jonesville 1600 Comment
  UC600517  Solidago elongata H. F. Copeland 1920-7-12 450 Butte Jonesville Comment
  CAS-BOT-BC364938  Solidago velutina subsp. californica Lowell Ahart 1982-9-12 3799 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC89490  Solidago velutina subsp. californica R. D. Fischer 2004-8-22 442 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property and up eastern slope. On hillside above mdw and creek. 304 Comment
  CHSC89491  Solidago velutina subsp. californica R. D. Fischer 2004-8-22 442 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property and up eastern slope. On hillside above mdw and creek. 304 Comment
  CHSC101157  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center 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
  CHSC46337  Soliva sessilis Lowell Ahart 1989-5-23 6246 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CAS-BOT-BC365837  Soliva sessilis John Thomas Howell; Gordon H. True 1967-5-7 42181 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CHSC107245  Sonchus oleraceus Lowell Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC107250  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 -A Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  JEPS118037  Sonchus oleraceus Lowell Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC31658  Sonchus tenerrimus L. Ahart 1974-6-3 474 Butte In garden. Peter Ahart Ranch, Honcut. 45 Comment
  CDA26430  Sorbus scopulina C. Browning 1970-9-9 Butte Jonesville. 0 Comment
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  SEINET11787803  Sparganium emersum L. P. Janeway 1987-1 2248 Butte Mdw on Pinkard Cr between Lewis Ridge & Moorville Ridge, 6.5 mi from Challenge-LaPorte Rd & Travis 1082 Comment
  JEPS120961  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, Comment
  CDA19178  Spergularia rubra Gary Vercruse, Riley 2001-5-21 PDR 1170768 Butte Sacramento Valley; 10010 Jones Ave, Durham. 0 Comment
  CHSC42488  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC11873  Sphenosciadium capitellatum E. B. Copeland 1930-8-30 430 Butte Jonesville 1500 Comment
  CHSC11996  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville. At 'the Summit. 2100 Comment
  POM174358  Spiraea densiflora var. splendens H. F. Copeland 1928-8-27 1013 Butte Neighborhood of Jonesville. Summit of Humboldt Rd. 2134 Comment
  CHSC45809  Spiraea douglasii L. P. Janeway; R. A. Schlising 1988-7-22 3045 B Butte Near the saddle between Coon Hollow and Chips Cr. 1889 Comment
  SD2169  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville, well drained flats 1500 Comment
  CHSC27261  Spiraea prunifolia P. Moyer 1972-3-11 125 Butte CSUC Campus. Foot of Citrus Ave. Bridge, n side of Chico Ck. 60 Comment
  CHSC25365  Spiranthes porrifolia Hayes; Warner 1977-8-14 39 Butte Along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  SEINET13948162 Image available Stachys A. A. Heller 1915-1 11907 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  SEINET10498819  Stachys palustris subsp. pilosa Lowell Ahart 1983-8-16 Ahart 4288 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET10935788  Stachys palustris subsp. pilosa Mary Susan Taylor 1978-9-8 Taylor 1906 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  JEPS104639  Stachys pycnantha Lowell Ahart 2003-7-23 10439 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
  UC196362 Image available Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada 1219 Comment
  RSA4123  Stachys rigida subsp. quercetorum E. B. Copeland 1930-7-20 s.n. Butte Jonesville 1500 Comment
  UC1609008  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte about 1 mi se Butte Meadows (banks of Bolt Creek); Bolt Creek 1325 Comment
  JEPS121997  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC111720  Stellaria media Lowell Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC231  Stellaria media M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC38306  Stellaria nitens Vernon Oswald 1983-3-4 111 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. 2.4 mi e of the power lines. 256 Comment
  CHSC42733  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC181448  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Gravel bars on Butte Creek, Jonesville 1500 Comment
  SEINET10508393  Stipa lemmonii Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4087 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC113950  Stipa nelsonii var. dorei Lowell Ahart 2014-7-10 19606 Butte On the east side of the Skyway, about 2 miles north of Stirling City. 1249 Comment
  SEINET10934982  Stipa stillmanii Lowell Ahart 1983-8-16 Ahart 4302 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC38025  Streptanthus drepanoides R. E. Preston 1982-4-22 254 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
  CAS-BOT-BC87426  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC39956  Streptanthus polygaloides L. Ahart; P. Ahart 1983-6-30 4178 Butte Ca. 1.5 mi ne of Concow Reservoir. NE of Oroville. Along dirt road. 550 Comment
  CHSC95054  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte Northern High Sierra Nevada. Northwest side of Rim Road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Southeast-facing slope near ridge top. 847 Comment
  CHSC97726  Streptanthus polygaloides Lowell Ahart 2007-11-3 14552 Butte Below 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. 271 Comment
  JEPS25036  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  CHSC30707  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1980-5-27 2714 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  JEPS108791  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 402 Comment
  UC725566  Streptanthus tortuosus var. suffrutescens A. A. Heller 1942-4-26 16434 Butte rocks overlooking deep gorge where road begins to descend toward Oroville (after leaving flattened summit of Table Mt.) Comment
  SEINET10449572  Styrax officinalis var. californicus Mary Susan Taylor 1976-5-5 Taylor 1122 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CAS-BOT-BC48055  Styrax redivivus John Thomas Howell 1961-9-22 36757 Butte North fork of Feather River, 10 miles from Oroville. Comment
  LA44530  Styrax redivivus A. A. Heller; 1915-5-25 11891 Butte Sierra Nevada, ridge above Enterprise 609 Comment
  UCSB57876  Suaeda calceoliformis Oswald, Vernon 1989-9-6 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  UCSB57880  Suaeda calceoliformis Oswald, Vernon 1989-10-18 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  JEPS47011  Swertia albicaulis var. nitida W. I. Follett 1936-6-29 Butte Brush Creek Comment
  CHSC38324  Symphyotrichum bracteolatum Vernon H. Oswald 1983-8-9 971 Butte Upper Bidwell Park, Chico, at the retaining wall at the E end of Centennial Ave. 85 Comment
  CHSC94578  Symphyotrichum bracteolatum Lowell Ahart 2006-9-9 13246 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  CAS-BOT-BC97686  Symphyotrichum chilense Lowell Ahart 1984-12-28 4833 Butte about 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville 400 Comment
  CAS-BOT-BC99037  Symphyotrichum cusickii Lowell Ahart 1981-9-18 3179 Butte Sierra Nevada - Arch Rock Tunnel, Hwy. 70 550 Comment
  JEPS124195  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20550 Butte About 100 yards east of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC221937  Taeniatherum caput-medusae Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD142991  Tanacetum vulgare M. S. Taylor 1982-8-16 4992 Butte south end of Stirling City, along both sides of the Skyway. 1036 Comment
  CDA42865  Taraxacum erythrospermum L. Ahart 2012-5-14 18044 Butte Along the edges of the paved road, between Tables 7 & 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS14512  Tauschia hartwegii Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5606 Butte along Oroville-Concow road 0.9 mi below its junction with Yankee Hill Road 521 Comment
  POM82504  Tauschia hartwegii C. C. Bruce 1897-05 2061 Butte Near Chico. Comment
  SEINET10906782  Tauschia kelloggii Mary Susan Taylor 1981-5-15 Taylor 3754 Butte T22N R5E nw sec 29, Berry Creek quad. End of spur rd 22N84A, ridge SW of Stony Creek, ca. 2.5 air mi due E of Jarbo Gap on Feather River Hwy 70. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC52078  Teucrium fruticans B. Castro 1988-4-10 258 Butte At extreme e end of parking lot of Five Mile Recreation Area along s side of Big Chico Ck. 83 Comment
  CHSC45613  Thalictrum fendleri Kirsten Tarp 1981-7-3 27 Butte N part of county, near Philbrook Reservoir. Meadow. 1828 Comment
  CAS-BOT-BC197364  Thinopyrum intermedium subsp. barbulatum M. S. Taylor 1978-7-21 1835 Butte In Big Bald Rock parking lot 997 Comment
  CAS-BOT-BC88232  Thysanocarpus curvipes James Jokerst 1985-3-24 2170 Butte Near Serpentine Point. 547 Comment
  CHSC43452  Thysanocarpus curvipes Lowell Ahart 1978-4-19 1657 Butte At the overlook at Feather Falls, about 6 miles north of the town of Feather Falls. 548 Comment
  CAS-BOT-BC88217  Thysanocarpus curvipes Lowell Ahart 1980-3-8 2030 Butte Peter Ahart Ranch. Honcut. 50 Comment
  SEINET10448592  Thysanocarpus curvipes Mary Susan Taylor 1975-4-26 Taylor 520 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET11985725  Thysanocarpus curvipes Unknown 1978-1 6 Butte ca 100 yds NE of Skyway, 5.8 mi E of jct Hwy 99 & Skyway, 8.8 mi E of Chico 384 Comment
  CHSC35746  Thysanocarpus radians R. E. Preston 1982-4-29 268 Butte N jct of Cherokee Rd and Oregon Gulch Rd, ca. 6.5 mi n of Oroville. 419 Comment
  CHSC4139  Thysanocarpus radians R. Carter 1966-4-9 328 Butte Found ca. 6 mi. E of Oroville; 500 yds. NE of small reservoir at intersection of Olive Hwy. and Miners Ranch Rd. 243 Comment
  CHSC83948  Thysanocarpus radians Lowell Ahart 2003-3-24 10023 Butte Fields, about 50 yards north of the access road to the boat ramp at the Thermalito Afterbay, about 200 yards west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 48 Comment
  JEPS43468  Thysanocarpus radians Joan Danielson 1966-4-6 9 Butte Cherokee Road on way to Table Mt. 1 mi s Cherokee; on way to Table Mt. 609 Comment
  UCR228716  Thysanocarpus radians Charles Hughes 2008-3-18 021 Butte Oroville, west of 6th Street between Nelson Avenue School and baseball fields 105 Comment
  SEINET11981499  Tilia W. F. Wight 1907-1 1404 Butte Bidwell Estate, Chico Comment
  CHSC24621  Tilia americana M. S. Taylor 1975-5-6 553 Butte On s side of Little Chico Creek, near Holt Hall, California State University, Chico. 60 Comment
  JEPS126558  Torilis arvensis